1 #include "qemu/osdep.h"
5 #include "exec/gdbstub.h"
6 #include "exec/helper-proto.h"
7 #include "qemu/host-utils.h"
8 #include "sysemu/arch_init.h"
9 #include "sysemu/sysemu.h"
10 #include "qemu/bitops.h"
11 #include "qemu/crc32c.h"
12 #include "exec/exec-all.h"
13 #include "exec/cpu_ldst.h"
15 #include <zlib.h> /* For crc32 */
16 #include "exec/semihost.h"
17 #include "sysemu/kvm.h"
19 #define ARM_CPU_FREQ 1000000000 /* FIXME: 1 GHz, should be configurable */
21 #ifndef CONFIG_USER_ONLY
22 static bool get_phys_addr(CPUARMState *env, target_ulong address,
23 MMUAccessType access_type, ARMMMUIdx mmu_idx,
24 hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot,
25 target_ulong *page_size, uint32_t *fsr,
28 static bool get_phys_addr_lpae(CPUARMState *env, target_ulong address,
29 MMUAccessType access_type, ARMMMUIdx mmu_idx,
30 hwaddr *phys_ptr, MemTxAttrs *txattrs, int *prot,
31 target_ulong *page_size_ptr, uint32_t *fsr,
34 /* Definitions for the PMCCNTR and PMCR registers */
40 static int vfp_gdb_get_reg(CPUARMState *env, uint8_t *buf, int reg)
44 /* VFP data registers are always little-endian. */
45 nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16;
47 stfq_le_p(buf, env->vfp.regs[reg]);
50 if (arm_feature(env, ARM_FEATURE_NEON)) {
51 /* Aliases for Q regs. */
54 stfq_le_p(buf, env->vfp.regs[(reg - 32) * 2]);
55 stfq_le_p(buf + 8, env->vfp.regs[(reg - 32) * 2 + 1]);
59 switch (reg - nregs) {
60 case 0: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSID]); return 4;
61 case 1: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSCR]); return 4;
62 case 2: stl_p(buf, env->vfp.xregs[ARM_VFP_FPEXC]); return 4;
67 static int vfp_gdb_set_reg(CPUARMState *env, uint8_t *buf, int reg)
71 nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16;
73 env->vfp.regs[reg] = ldfq_le_p(buf);
76 if (arm_feature(env, ARM_FEATURE_NEON)) {
79 env->vfp.regs[(reg - 32) * 2] = ldfq_le_p(buf);
80 env->vfp.regs[(reg - 32) * 2 + 1] = ldfq_le_p(buf + 8);
84 switch (reg - nregs) {
85 case 0: env->vfp.xregs[ARM_VFP_FPSID] = ldl_p(buf); return 4;
86 case 1: env->vfp.xregs[ARM_VFP_FPSCR] = ldl_p(buf); return 4;
87 case 2: env->vfp.xregs[ARM_VFP_FPEXC] = ldl_p(buf) & (1 << 30); return 4;
92 static int aarch64_fpu_gdb_get_reg(CPUARMState *env, uint8_t *buf, int reg)
96 /* 128 bit FP register */
97 stfq_le_p(buf, env->vfp.regs[reg * 2]);
98 stfq_le_p(buf + 8, env->vfp.regs[reg * 2 + 1]);
102 stl_p(buf, vfp_get_fpsr(env));
106 stl_p(buf, vfp_get_fpcr(env));
113 static int aarch64_fpu_gdb_set_reg(CPUARMState *env, uint8_t *buf, int reg)
117 /* 128 bit FP register */
118 env->vfp.regs[reg * 2] = ldfq_le_p(buf);
119 env->vfp.regs[reg * 2 + 1] = ldfq_le_p(buf + 8);
123 vfp_set_fpsr(env, ldl_p(buf));
127 vfp_set_fpcr(env, ldl_p(buf));
134 static uint64_t raw_read(CPUARMState *env, const ARMCPRegInfo *ri)
136 assert(ri->fieldoffset);
137 if (cpreg_field_is_64bit(ri)) {
138 return CPREG_FIELD64(env, ri);
140 return CPREG_FIELD32(env, ri);
144 static void raw_write(CPUARMState *env, const ARMCPRegInfo *ri,
147 assert(ri->fieldoffset);
148 if (cpreg_field_is_64bit(ri)) {
149 CPREG_FIELD64(env, ri) = value;
151 CPREG_FIELD32(env, ri) = value;
155 static void *raw_ptr(CPUARMState *env, const ARMCPRegInfo *ri)
157 return (char *)env + ri->fieldoffset;
160 uint64_t read_raw_cp_reg(CPUARMState *env, const ARMCPRegInfo *ri)
162 /* Raw read of a coprocessor register (as needed for migration, etc). */
163 if (ri->type & ARM_CP_CONST) {
164 return ri->resetvalue;
165 } else if (ri->raw_readfn) {
166 return ri->raw_readfn(env, ri);
167 } else if (ri->readfn) {
168 return ri->readfn(env, ri);
170 return raw_read(env, ri);
174 static void write_raw_cp_reg(CPUARMState *env, const ARMCPRegInfo *ri,
177 /* Raw write of a coprocessor register (as needed for migration, etc).
178 * Note that constant registers are treated as write-ignored; the
179 * caller should check for success by whether a readback gives the
182 if (ri->type & ARM_CP_CONST) {
184 } else if (ri->raw_writefn) {
185 ri->raw_writefn(env, ri, v);
186 } else if (ri->writefn) {
187 ri->writefn(env, ri, v);
189 raw_write(env, ri, v);
193 static bool raw_accessors_invalid(const ARMCPRegInfo *ri)
195 /* Return true if the regdef would cause an assertion if you called
196 * read_raw_cp_reg() or write_raw_cp_reg() on it (ie if it is a
197 * program bug for it not to have the NO_RAW flag).
198 * NB that returning false here doesn't necessarily mean that calling
199 * read/write_raw_cp_reg() is safe, because we can't distinguish "has
200 * read/write access functions which are safe for raw use" from "has
201 * read/write access functions which have side effects but has forgotten
202 * to provide raw access functions".
203 * The tests here line up with the conditions in read/write_raw_cp_reg()
204 * and assertions in raw_read()/raw_write().
206 if ((ri->type & ARM_CP_CONST) ||
208 ((ri->raw_writefn || ri->writefn) && (ri->raw_readfn || ri->readfn))) {
214 bool write_cpustate_to_list(ARMCPU *cpu)
216 /* Write the coprocessor state from cpu->env to the (index,value) list. */
220 for (i = 0; i < cpu->cpreg_array_len; i++) {
221 uint32_t regidx = kvm_to_cpreg_id(cpu->cpreg_indexes[i]);
222 const ARMCPRegInfo *ri;
224 ri = get_arm_cp_reginfo(cpu->cp_regs, regidx);
229 if (ri->type & ARM_CP_NO_RAW) {
232 cpu->cpreg_values[i] = read_raw_cp_reg(&cpu->env, ri);
237 bool write_list_to_cpustate(ARMCPU *cpu)
242 for (i = 0; i < cpu->cpreg_array_len; i++) {
243 uint32_t regidx = kvm_to_cpreg_id(cpu->cpreg_indexes[i]);
244 uint64_t v = cpu->cpreg_values[i];
245 const ARMCPRegInfo *ri;
247 ri = get_arm_cp_reginfo(cpu->cp_regs, regidx);
252 if (ri->type & ARM_CP_NO_RAW) {
255 /* Write value and confirm it reads back as written
256 * (to catch read-only registers and partially read-only
257 * registers where the incoming migration value doesn't match)
259 write_raw_cp_reg(&cpu->env, ri, v);
260 if (read_raw_cp_reg(&cpu->env, ri) != v) {
267 static void add_cpreg_to_list(gpointer key, gpointer opaque)
269 ARMCPU *cpu = opaque;
271 const ARMCPRegInfo *ri;
273 regidx = *(uint32_t *)key;
274 ri = get_arm_cp_reginfo(cpu->cp_regs, regidx);
276 if (!(ri->type & (ARM_CP_NO_RAW|ARM_CP_ALIAS))) {
277 cpu->cpreg_indexes[cpu->cpreg_array_len] = cpreg_to_kvm_id(regidx);
278 /* The value array need not be initialized at this point */
279 cpu->cpreg_array_len++;
283 static void count_cpreg(gpointer key, gpointer opaque)
285 ARMCPU *cpu = opaque;
287 const ARMCPRegInfo *ri;
289 regidx = *(uint32_t *)key;
290 ri = get_arm_cp_reginfo(cpu->cp_regs, regidx);
292 if (!(ri->type & (ARM_CP_NO_RAW|ARM_CP_ALIAS))) {
293 cpu->cpreg_array_len++;
297 static gint cpreg_key_compare(gconstpointer a, gconstpointer b)
299 uint64_t aidx = cpreg_to_kvm_id(*(uint32_t *)a);
300 uint64_t bidx = cpreg_to_kvm_id(*(uint32_t *)b);
311 void init_cpreg_list(ARMCPU *cpu)
313 /* Initialise the cpreg_tuples[] array based on the cp_regs hash.
314 * Note that we require cpreg_tuples[] to be sorted by key ID.
319 keys = g_hash_table_get_keys(cpu->cp_regs);
320 keys = g_list_sort(keys, cpreg_key_compare);
322 cpu->cpreg_array_len = 0;
324 g_list_foreach(keys, count_cpreg, cpu);
326 arraylen = cpu->cpreg_array_len;
327 cpu->cpreg_indexes = g_new(uint64_t, arraylen);
328 cpu->cpreg_values = g_new(uint64_t, arraylen);
329 cpu->cpreg_vmstate_indexes = g_new(uint64_t, arraylen);
330 cpu->cpreg_vmstate_values = g_new(uint64_t, arraylen);
331 cpu->cpreg_vmstate_array_len = cpu->cpreg_array_len;
332 cpu->cpreg_array_len = 0;
334 g_list_foreach(keys, add_cpreg_to_list, cpu);
336 assert(cpu->cpreg_array_len == arraylen);
342 * Some registers are not accessible if EL3.NS=0 and EL3 is using AArch32 but
343 * they are accessible when EL3 is using AArch64 regardless of EL3.NS.
345 * access_el3_aa32ns: Used to check AArch32 register views.
346 * access_el3_aa32ns_aa64any: Used to check both AArch32/64 register views.
348 static CPAccessResult access_el3_aa32ns(CPUARMState *env,
349 const ARMCPRegInfo *ri,
352 bool secure = arm_is_secure_below_el3(env);
354 assert(!arm_el_is_aa64(env, 3));
356 return CP_ACCESS_TRAP_UNCATEGORIZED;
361 static CPAccessResult access_el3_aa32ns_aa64any(CPUARMState *env,
362 const ARMCPRegInfo *ri,
365 if (!arm_el_is_aa64(env, 3)) {
366 return access_el3_aa32ns(env, ri, isread);
371 /* Some secure-only AArch32 registers trap to EL3 if used from
372 * Secure EL1 (but are just ordinary UNDEF in other non-EL3 contexts).
373 * Note that an access from Secure EL1 can only happen if EL3 is AArch64.
374 * We assume that the .access field is set to PL1_RW.
376 static CPAccessResult access_trap_aa32s_el1(CPUARMState *env,
377 const ARMCPRegInfo *ri,
380 if (arm_current_el(env) == 3) {
383 if (arm_is_secure_below_el3(env)) {
384 return CP_ACCESS_TRAP_EL3;
386 /* This will be EL1 NS and EL2 NS, which just UNDEF */
387 return CP_ACCESS_TRAP_UNCATEGORIZED;
390 /* Check for traps to "powerdown debug" registers, which are controlled
393 static CPAccessResult access_tdosa(CPUARMState *env, const ARMCPRegInfo *ri,
396 int el = arm_current_el(env);
398 if (el < 2 && (env->cp15.mdcr_el2 & MDCR_TDOSA)
399 && !arm_is_secure_below_el3(env)) {
400 return CP_ACCESS_TRAP_EL2;
402 if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TDOSA)) {
403 return CP_ACCESS_TRAP_EL3;
408 /* Check for traps to "debug ROM" registers, which are controlled
409 * by MDCR_EL2.TDRA for EL2 but by the more general MDCR_EL3.TDA for EL3.
411 static CPAccessResult access_tdra(CPUARMState *env, const ARMCPRegInfo *ri,
414 int el = arm_current_el(env);
416 if (el < 2 && (env->cp15.mdcr_el2 & MDCR_TDRA)
417 && !arm_is_secure_below_el3(env)) {
418 return CP_ACCESS_TRAP_EL2;
420 if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TDA)) {
421 return CP_ACCESS_TRAP_EL3;
426 /* Check for traps to general debug registers, which are controlled
427 * by MDCR_EL2.TDA for EL2 and MDCR_EL3.TDA for EL3.
429 static CPAccessResult access_tda(CPUARMState *env, const ARMCPRegInfo *ri,
432 int el = arm_current_el(env);
434 if (el < 2 && (env->cp15.mdcr_el2 & MDCR_TDA)
435 && !arm_is_secure_below_el3(env)) {
436 return CP_ACCESS_TRAP_EL2;
438 if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TDA)) {
439 return CP_ACCESS_TRAP_EL3;
444 /* Check for traps to performance monitor registers, which are controlled
445 * by MDCR_EL2.TPM for EL2 and MDCR_EL3.TPM for EL3.
447 static CPAccessResult access_tpm(CPUARMState *env, const ARMCPRegInfo *ri,
450 int el = arm_current_el(env);
452 if (el < 2 && (env->cp15.mdcr_el2 & MDCR_TPM)
453 && !arm_is_secure_below_el3(env)) {
454 return CP_ACCESS_TRAP_EL2;
456 if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TPM)) {
457 return CP_ACCESS_TRAP_EL3;
462 static void dacr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
464 ARMCPU *cpu = arm_env_get_cpu(env);
466 raw_write(env, ri, value);
467 tlb_flush(CPU(cpu)); /* Flush TLB as domain not tracked in TLB */
470 static void fcse_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
472 ARMCPU *cpu = arm_env_get_cpu(env);
474 if (raw_read(env, ri) != value) {
475 /* Unlike real hardware the qemu TLB uses virtual addresses,
476 * not modified virtual addresses, so this causes a TLB flush.
479 raw_write(env, ri, value);
483 static void contextidr_write(CPUARMState *env, const ARMCPRegInfo *ri,
486 ARMCPU *cpu = arm_env_get_cpu(env);
488 if (raw_read(env, ri) != value && !arm_feature(env, ARM_FEATURE_PMSA)
489 && !extended_addresses_enabled(env)) {
490 /* For VMSA (when not using the LPAE long descriptor page table
491 * format) this register includes the ASID, so do a TLB flush.
492 * For PMSA it is purely a process ID and no action is needed.
496 raw_write(env, ri, value);
499 static void tlbiall_write(CPUARMState *env, const ARMCPRegInfo *ri,
502 /* Invalidate all (TLBIALL) */
503 ARMCPU *cpu = arm_env_get_cpu(env);
508 static void tlbimva_write(CPUARMState *env, const ARMCPRegInfo *ri,
511 /* Invalidate single TLB entry by MVA and ASID (TLBIMVA) */
512 ARMCPU *cpu = arm_env_get_cpu(env);
514 tlb_flush_page(CPU(cpu), value & TARGET_PAGE_MASK);
517 static void tlbiasid_write(CPUARMState *env, const ARMCPRegInfo *ri,
520 /* Invalidate by ASID (TLBIASID) */
521 ARMCPU *cpu = arm_env_get_cpu(env);
526 static void tlbimvaa_write(CPUARMState *env, const ARMCPRegInfo *ri,
529 /* Invalidate single entry by MVA, all ASIDs (TLBIMVAA) */
530 ARMCPU *cpu = arm_env_get_cpu(env);
532 tlb_flush_page(CPU(cpu), value & TARGET_PAGE_MASK);
535 /* IS variants of TLB operations must affect all cores */
536 static void tlbiall_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
539 CPUState *cs = ENV_GET_CPU(env);
541 tlb_flush_all_cpus_synced(cs);
544 static void tlbiasid_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
547 CPUState *cs = ENV_GET_CPU(env);
549 tlb_flush_all_cpus_synced(cs);
552 static void tlbimva_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
555 CPUState *cs = ENV_GET_CPU(env);
557 tlb_flush_page_all_cpus_synced(cs, value & TARGET_PAGE_MASK);
560 static void tlbimvaa_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
563 CPUState *cs = ENV_GET_CPU(env);
565 tlb_flush_page_all_cpus_synced(cs, value & TARGET_PAGE_MASK);
568 static void tlbiall_nsnh_write(CPUARMState *env, const ARMCPRegInfo *ri,
571 CPUState *cs = ENV_GET_CPU(env);
573 tlb_flush_by_mmuidx(cs,
574 ARMMMUIdxBit_S12NSE1 |
575 ARMMMUIdxBit_S12NSE0 |
579 static void tlbiall_nsnh_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
582 CPUState *cs = ENV_GET_CPU(env);
584 tlb_flush_by_mmuidx_all_cpus_synced(cs,
585 ARMMMUIdxBit_S12NSE1 |
586 ARMMMUIdxBit_S12NSE0 |
590 static void tlbiipas2_write(CPUARMState *env, const ARMCPRegInfo *ri,
593 /* Invalidate by IPA. This has to invalidate any structures that
594 * contain only stage 2 translation information, but does not need
595 * to apply to structures that contain combined stage 1 and stage 2
596 * translation information.
597 * This must NOP if EL2 isn't implemented or SCR_EL3.NS is zero.
599 CPUState *cs = ENV_GET_CPU(env);
602 if (!arm_feature(env, ARM_FEATURE_EL2) || !(env->cp15.scr_el3 & SCR_NS)) {
606 pageaddr = sextract64(value << 12, 0, 40);
608 tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdxBit_S2NS);
611 static void tlbiipas2_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
614 CPUState *cs = ENV_GET_CPU(env);
617 if (!arm_feature(env, ARM_FEATURE_EL2) || !(env->cp15.scr_el3 & SCR_NS)) {
621 pageaddr = sextract64(value << 12, 0, 40);
623 tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr,
627 static void tlbiall_hyp_write(CPUARMState *env, const ARMCPRegInfo *ri,
630 CPUState *cs = ENV_GET_CPU(env);
632 tlb_flush_by_mmuidx(cs, ARMMMUIdxBit_S1E2);
635 static void tlbiall_hyp_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
638 CPUState *cs = ENV_GET_CPU(env);
640 tlb_flush_by_mmuidx_all_cpus_synced(cs, ARMMMUIdxBit_S1E2);
643 static void tlbimva_hyp_write(CPUARMState *env, const ARMCPRegInfo *ri,
646 CPUState *cs = ENV_GET_CPU(env);
647 uint64_t pageaddr = value & ~MAKE_64BIT_MASK(0, 12);
649 tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdxBit_S1E2);
652 static void tlbimva_hyp_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
655 CPUState *cs = ENV_GET_CPU(env);
656 uint64_t pageaddr = value & ~MAKE_64BIT_MASK(0, 12);
658 tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr,
662 static const ARMCPRegInfo cp_reginfo[] = {
663 /* Define the secure and non-secure FCSE identifier CP registers
664 * separately because there is no secure bank in V8 (no _EL3). This allows
665 * the secure register to be properly reset and migrated. There is also no
666 * v8 EL1 version of the register so the non-secure instance stands alone.
668 { .name = "FCSEIDR(NS)",
669 .cp = 15, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 0,
670 .access = PL1_RW, .secure = ARM_CP_SECSTATE_NS,
671 .fieldoffset = offsetof(CPUARMState, cp15.fcseidr_ns),
672 .resetvalue = 0, .writefn = fcse_write, .raw_writefn = raw_write, },
673 { .name = "FCSEIDR(S)",
674 .cp = 15, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 0,
675 .access = PL1_RW, .secure = ARM_CP_SECSTATE_S,
676 .fieldoffset = offsetof(CPUARMState, cp15.fcseidr_s),
677 .resetvalue = 0, .writefn = fcse_write, .raw_writefn = raw_write, },
678 /* Define the secure and non-secure context identifier CP registers
679 * separately because there is no secure bank in V8 (no _EL3). This allows
680 * the secure register to be properly reset and migrated. In the
681 * non-secure case, the 32-bit register will have reset and migration
682 * disabled during registration as it is handled by the 64-bit instance.
684 { .name = "CONTEXTIDR_EL1", .state = ARM_CP_STATE_BOTH,
685 .opc0 = 3, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 1,
686 .access = PL1_RW, .secure = ARM_CP_SECSTATE_NS,
687 .fieldoffset = offsetof(CPUARMState, cp15.contextidr_el[1]),
688 .resetvalue = 0, .writefn = contextidr_write, .raw_writefn = raw_write, },
689 { .name = "CONTEXTIDR(S)", .state = ARM_CP_STATE_AA32,
690 .cp = 15, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 1,
691 .access = PL1_RW, .secure = ARM_CP_SECSTATE_S,
692 .fieldoffset = offsetof(CPUARMState, cp15.contextidr_s),
693 .resetvalue = 0, .writefn = contextidr_write, .raw_writefn = raw_write, },
697 static const ARMCPRegInfo not_v8_cp_reginfo[] = {
698 /* NB: Some of these registers exist in v8 but with more precise
699 * definitions that don't use CP_ANY wildcards (mostly in v8_cp_reginfo[]).
701 /* MMU Domain access control / MPU write buffer control */
703 .cp = 15, .opc1 = CP_ANY, .crn = 3, .crm = CP_ANY, .opc2 = CP_ANY,
704 .access = PL1_RW, .resetvalue = 0,
705 .writefn = dacr_write, .raw_writefn = raw_write,
706 .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.dacr_s),
707 offsetoflow32(CPUARMState, cp15.dacr_ns) } },
708 /* ARMv7 allocates a range of implementation defined TLB LOCKDOWN regs.
709 * For v6 and v5, these mappings are overly broad.
711 { .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 0,
712 .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP },
713 { .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 1,
714 .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP },
715 { .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 4,
716 .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP },
717 { .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 8,
718 .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP },
719 /* Cache maintenance ops; some of this space may be overridden later. */
720 { .name = "CACHEMAINT", .cp = 15, .crn = 7, .crm = CP_ANY,
721 .opc1 = 0, .opc2 = CP_ANY, .access = PL1_W,
722 .type = ARM_CP_NOP | ARM_CP_OVERRIDE },
726 static const ARMCPRegInfo not_v6_cp_reginfo[] = {
727 /* Not all pre-v6 cores implemented this WFI, so this is slightly
730 { .name = "WFI_v5", .cp = 15, .crn = 7, .crm = 8, .opc1 = 0, .opc2 = 2,
731 .access = PL1_W, .type = ARM_CP_WFI },
735 static const ARMCPRegInfo not_v7_cp_reginfo[] = {
736 /* Standard v6 WFI (also used in some pre-v6 cores); not in v7 (which
737 * is UNPREDICTABLE; we choose to NOP as most implementations do).
739 { .name = "WFI_v6", .cp = 15, .crn = 7, .crm = 0, .opc1 = 0, .opc2 = 4,
740 .access = PL1_W, .type = ARM_CP_WFI },
741 /* L1 cache lockdown. Not architectural in v6 and earlier but in practice
742 * implemented in 926, 946, 1026, 1136, 1176 and 11MPCore. StrongARM and
743 * OMAPCP will override this space.
745 { .name = "DLOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 0, .opc2 = 0,
746 .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c9_data),
748 { .name = "ILOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 0, .opc2 = 1,
749 .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c9_insn),
751 /* v6 doesn't have the cache ID registers but Linux reads them anyway */
752 { .name = "DUMMY", .cp = 15, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = CP_ANY,
753 .access = PL1_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW,
755 /* We don't implement pre-v7 debug but most CPUs had at least a DBGDIDR;
756 * implementing it as RAZ means the "debug architecture version" bits
757 * will read as a reserved value, which should cause Linux to not try
758 * to use the debug hardware.
760 { .name = "DBGDIDR", .cp = 14, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 0,
761 .access = PL0_R, .type = ARM_CP_CONST, .resetvalue = 0 },
762 /* MMU TLB control. Note that the wildcarding means we cover not just
763 * the unified TLB ops but also the dside/iside/inner-shareable variants.
765 { .name = "TLBIALL", .cp = 15, .crn = 8, .crm = CP_ANY,
766 .opc1 = CP_ANY, .opc2 = 0, .access = PL1_W, .writefn = tlbiall_write,
767 .type = ARM_CP_NO_RAW },
768 { .name = "TLBIMVA", .cp = 15, .crn = 8, .crm = CP_ANY,
769 .opc1 = CP_ANY, .opc2 = 1, .access = PL1_W, .writefn = tlbimva_write,
770 .type = ARM_CP_NO_RAW },
771 { .name = "TLBIASID", .cp = 15, .crn = 8, .crm = CP_ANY,
772 .opc1 = CP_ANY, .opc2 = 2, .access = PL1_W, .writefn = tlbiasid_write,
773 .type = ARM_CP_NO_RAW },
774 { .name = "TLBIMVAA", .cp = 15, .crn = 8, .crm = CP_ANY,
775 .opc1 = CP_ANY, .opc2 = 3, .access = PL1_W, .writefn = tlbimvaa_write,
776 .type = ARM_CP_NO_RAW },
777 { .name = "PRRR", .cp = 15, .crn = 10, .crm = 2,
778 .opc1 = 0, .opc2 = 0, .access = PL1_RW, .type = ARM_CP_NOP },
779 { .name = "NMRR", .cp = 15, .crn = 10, .crm = 2,
780 .opc1 = 0, .opc2 = 1, .access = PL1_RW, .type = ARM_CP_NOP },
784 static void cpacr_write(CPUARMState *env, const ARMCPRegInfo *ri,
789 /* In ARMv8 most bits of CPACR_EL1 are RES0. */
790 if (!arm_feature(env, ARM_FEATURE_V8)) {
791 /* ARMv7 defines bits for unimplemented coprocessors as RAZ/WI.
792 * ASEDIS [31] and D32DIS [30] are both UNK/SBZP without VFP.
793 * TRCDIS [28] is RAZ/WI since we do not implement a trace macrocell.
795 if (arm_feature(env, ARM_FEATURE_VFP)) {
796 /* VFP coprocessor: cp10 & cp11 [23:20] */
797 mask |= (1 << 31) | (1 << 30) | (0xf << 20);
799 if (!arm_feature(env, ARM_FEATURE_NEON)) {
800 /* ASEDIS [31] bit is RAO/WI */
804 /* VFPv3 and upwards with NEON implement 32 double precision
805 * registers (D0-D31).
807 if (!arm_feature(env, ARM_FEATURE_NEON) ||
808 !arm_feature(env, ARM_FEATURE_VFP3)) {
809 /* D32DIS [30] is RAO/WI if D16-31 are not implemented. */
815 env->cp15.cpacr_el1 = value;
818 static CPAccessResult cpacr_access(CPUARMState *env, const ARMCPRegInfo *ri,
821 if (arm_feature(env, ARM_FEATURE_V8)) {
822 /* Check if CPACR accesses are to be trapped to EL2 */
823 if (arm_current_el(env) == 1 &&
824 (env->cp15.cptr_el[2] & CPTR_TCPAC) && !arm_is_secure(env)) {
825 return CP_ACCESS_TRAP_EL2;
826 /* Check if CPACR accesses are to be trapped to EL3 */
827 } else if (arm_current_el(env) < 3 &&
828 (env->cp15.cptr_el[3] & CPTR_TCPAC)) {
829 return CP_ACCESS_TRAP_EL3;
836 static CPAccessResult cptr_access(CPUARMState *env, const ARMCPRegInfo *ri,
839 /* Check if CPTR accesses are set to trap to EL3 */
840 if (arm_current_el(env) == 2 && (env->cp15.cptr_el[3] & CPTR_TCPAC)) {
841 return CP_ACCESS_TRAP_EL3;
847 static const ARMCPRegInfo v6_cp_reginfo[] = {
848 /* prefetch by MVA in v6, NOP in v7 */
849 { .name = "MVA_prefetch",
850 .cp = 15, .crn = 7, .crm = 13, .opc1 = 0, .opc2 = 1,
851 .access = PL1_W, .type = ARM_CP_NOP },
852 /* We need to break the TB after ISB to execute self-modifying code
853 * correctly and also to take any pending interrupts immediately.
854 * So use arm_cp_write_ignore() function instead of ARM_CP_NOP flag.
856 { .name = "ISB", .cp = 15, .crn = 7, .crm = 5, .opc1 = 0, .opc2 = 4,
857 .access = PL0_W, .type = ARM_CP_NO_RAW, .writefn = arm_cp_write_ignore },
858 { .name = "DSB", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 4,
859 .access = PL0_W, .type = ARM_CP_NOP },
860 { .name = "DMB", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 5,
861 .access = PL0_W, .type = ARM_CP_NOP },
862 { .name = "IFAR", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 2,
864 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ifar_s),
865 offsetof(CPUARMState, cp15.ifar_ns) },
867 /* Watchpoint Fault Address Register : should actually only be present
868 * for 1136, 1176, 11MPCore.
870 { .name = "WFAR", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 1,
871 .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0, },
872 { .name = "CPACR", .state = ARM_CP_STATE_BOTH, .opc0 = 3,
873 .crn = 1, .crm = 0, .opc1 = 0, .opc2 = 2, .accessfn = cpacr_access,
874 .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.cpacr_el1),
875 .resetvalue = 0, .writefn = cpacr_write },
879 static CPAccessResult pmreg_access(CPUARMState *env, const ARMCPRegInfo *ri,
882 /* Performance monitor registers user accessibility is controlled
883 * by PMUSERENR. MDCR_EL2.TPM and MDCR_EL3.TPM allow configurable
884 * trapping to EL2 or EL3 for other accesses.
886 int el = arm_current_el(env);
888 if (el == 0 && !(env->cp15.c9_pmuserenr & 1)) {
889 return CP_ACCESS_TRAP;
891 if (el < 2 && (env->cp15.mdcr_el2 & MDCR_TPM)
892 && !arm_is_secure_below_el3(env)) {
893 return CP_ACCESS_TRAP_EL2;
895 if (el < 3 && (env->cp15.mdcr_el3 & MDCR_TPM)) {
896 return CP_ACCESS_TRAP_EL3;
902 static CPAccessResult pmreg_access_xevcntr(CPUARMState *env,
903 const ARMCPRegInfo *ri,
906 /* ER: event counter read trap control */
907 if (arm_feature(env, ARM_FEATURE_V8)
908 && arm_current_el(env) == 0
909 && (env->cp15.c9_pmuserenr & (1 << 3)) != 0
914 return pmreg_access(env, ri, isread);
917 static CPAccessResult pmreg_access_swinc(CPUARMState *env,
918 const ARMCPRegInfo *ri,
921 /* SW: software increment write trap control */
922 if (arm_feature(env, ARM_FEATURE_V8)
923 && arm_current_el(env) == 0
924 && (env->cp15.c9_pmuserenr & (1 << 1)) != 0
929 return pmreg_access(env, ri, isread);
932 #ifndef CONFIG_USER_ONLY
934 static CPAccessResult pmreg_access_selr(CPUARMState *env,
935 const ARMCPRegInfo *ri,
938 /* ER: event counter read trap control */
939 if (arm_feature(env, ARM_FEATURE_V8)
940 && arm_current_el(env) == 0
941 && (env->cp15.c9_pmuserenr & (1 << 3)) != 0) {
945 return pmreg_access(env, ri, isread);
948 static CPAccessResult pmreg_access_ccntr(CPUARMState *env,
949 const ARMCPRegInfo *ri,
952 /* CR: cycle counter read trap control */
953 if (arm_feature(env, ARM_FEATURE_V8)
954 && arm_current_el(env) == 0
955 && (env->cp15.c9_pmuserenr & (1 << 2)) != 0
960 return pmreg_access(env, ri, isread);
963 static inline bool arm_ccnt_enabled(CPUARMState *env)
965 /* This does not support checking PMCCFILTR_EL0 register */
967 if (!(env->cp15.c9_pmcr & PMCRE)) {
974 void pmccntr_sync(CPUARMState *env)
978 temp_ticks = muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
979 ARM_CPU_FREQ, NANOSECONDS_PER_SECOND);
981 if (env->cp15.c9_pmcr & PMCRD) {
982 /* Increment once every 64 processor clock cycles */
986 if (arm_ccnt_enabled(env)) {
987 env->cp15.c15_ccnt = temp_ticks - env->cp15.c15_ccnt;
991 static void pmcr_write(CPUARMState *env, const ARMCPRegInfo *ri,
997 /* The counter has been reset */
998 env->cp15.c15_ccnt = 0;
1001 /* only the DP, X, D and E bits are writable */
1002 env->cp15.c9_pmcr &= ~0x39;
1003 env->cp15.c9_pmcr |= (value & 0x39);
1008 static uint64_t pmccntr_read(CPUARMState *env, const ARMCPRegInfo *ri)
1010 uint64_t total_ticks;
1012 if (!arm_ccnt_enabled(env)) {
1013 /* Counter is disabled, do not change value */
1014 return env->cp15.c15_ccnt;
1017 total_ticks = muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
1018 ARM_CPU_FREQ, NANOSECONDS_PER_SECOND);
1020 if (env->cp15.c9_pmcr & PMCRD) {
1021 /* Increment once every 64 processor clock cycles */
1024 return total_ticks - env->cp15.c15_ccnt;
1027 static void pmselr_write(CPUARMState *env, const ARMCPRegInfo *ri,
1030 /* The value of PMSELR.SEL affects the behavior of PMXEVTYPER and
1031 * PMXEVCNTR. We allow [0..31] to be written to PMSELR here; in the
1032 * meanwhile, we check PMSELR.SEL when PMXEVTYPER and PMXEVCNTR are
1035 env->cp15.c9_pmselr = value & 0x1f;
1038 static void pmccntr_write(CPUARMState *env, const ARMCPRegInfo *ri,
1041 uint64_t total_ticks;
1043 if (!arm_ccnt_enabled(env)) {
1044 /* Counter is disabled, set the absolute value */
1045 env->cp15.c15_ccnt = value;
1049 total_ticks = muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
1050 ARM_CPU_FREQ, NANOSECONDS_PER_SECOND);
1052 if (env->cp15.c9_pmcr & PMCRD) {
1053 /* Increment once every 64 processor clock cycles */
1056 env->cp15.c15_ccnt = total_ticks - value;
1059 static void pmccntr_write32(CPUARMState *env, const ARMCPRegInfo *ri,
1062 uint64_t cur_val = pmccntr_read(env, NULL);
1064 pmccntr_write(env, ri, deposit64(cur_val, 0, 32, value));
1067 #else /* CONFIG_USER_ONLY */
1069 void pmccntr_sync(CPUARMState *env)
1075 static void pmccfiltr_write(CPUARMState *env, const ARMCPRegInfo *ri,
1079 env->cp15.pmccfiltr_el0 = value & 0x7E000000;
1083 static void pmcntenset_write(CPUARMState *env, const ARMCPRegInfo *ri,
1087 env->cp15.c9_pmcnten |= value;
1090 static void pmcntenclr_write(CPUARMState *env, const ARMCPRegInfo *ri,
1094 env->cp15.c9_pmcnten &= ~value;
1097 static void pmovsr_write(CPUARMState *env, const ARMCPRegInfo *ri,
1100 env->cp15.c9_pmovsr &= ~value;
1103 static void pmxevtyper_write(CPUARMState *env, const ARMCPRegInfo *ri,
1106 /* Attempts to access PMXEVTYPER are CONSTRAINED UNPREDICTABLE when
1107 * PMSELR value is equal to or greater than the number of implemented
1108 * counters, but not equal to 0x1f. We opt to behave as a RAZ/WI.
1110 if (env->cp15.c9_pmselr == 0x1f) {
1111 pmccfiltr_write(env, ri, value);
1115 static uint64_t pmxevtyper_read(CPUARMState *env, const ARMCPRegInfo *ri)
1117 /* We opt to behave as a RAZ/WI when attempts to access PMXEVTYPER
1118 * are CONSTRAINED UNPREDICTABLE. See comments in pmxevtyper_write().
1120 if (env->cp15.c9_pmselr == 0x1f) {
1121 return env->cp15.pmccfiltr_el0;
1127 static void pmuserenr_write(CPUARMState *env, const ARMCPRegInfo *ri,
1130 if (arm_feature(env, ARM_FEATURE_V8)) {
1131 env->cp15.c9_pmuserenr = value & 0xf;
1133 env->cp15.c9_pmuserenr = value & 1;
1137 static void pmintenset_write(CPUARMState *env, const ARMCPRegInfo *ri,
1140 /* We have no event counters so only the C bit can be changed */
1142 env->cp15.c9_pminten |= value;
1145 static void pmintenclr_write(CPUARMState *env, const ARMCPRegInfo *ri,
1149 env->cp15.c9_pminten &= ~value;
1152 static void vbar_write(CPUARMState *env, const ARMCPRegInfo *ri,
1155 /* Note that even though the AArch64 view of this register has bits
1156 * [10:0] all RES0 we can only mask the bottom 5, to comply with the
1157 * architectural requirements for bits which are RES0 only in some
1158 * contexts. (ARMv8 would permit us to do no masking at all, but ARMv7
1159 * requires the bottom five bits to be RAZ/WI because they're UNK/SBZP.)
1161 raw_write(env, ri, value & ~0x1FULL);
1164 static void scr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
1166 /* We only mask off bits that are RES0 both for AArch64 and AArch32.
1167 * For bits that vary between AArch32/64, code needs to check the
1168 * current execution mode before directly using the feature bit.
1170 uint32_t valid_mask = SCR_AARCH64_MASK | SCR_AARCH32_MASK;
1172 if (!arm_feature(env, ARM_FEATURE_EL2)) {
1173 valid_mask &= ~SCR_HCE;
1175 /* On ARMv7, SMD (or SCD as it is called in v7) is only
1176 * supported if EL2 exists. The bit is UNK/SBZP when
1177 * EL2 is unavailable. In QEMU ARMv7, we force it to always zero
1178 * when EL2 is unavailable.
1179 * On ARMv8, this bit is always available.
1181 if (arm_feature(env, ARM_FEATURE_V7) &&
1182 !arm_feature(env, ARM_FEATURE_V8)) {
1183 valid_mask &= ~SCR_SMD;
1187 /* Clear all-context RES0 bits. */
1188 value &= valid_mask;
1189 raw_write(env, ri, value);
1192 static uint64_t ccsidr_read(CPUARMState *env, const ARMCPRegInfo *ri)
1194 ARMCPU *cpu = arm_env_get_cpu(env);
1196 /* Acquire the CSSELR index from the bank corresponding to the CCSIDR
1199 uint32_t index = A32_BANKED_REG_GET(env, csselr,
1200 ri->secure & ARM_CP_SECSTATE_S);
1202 return cpu->ccsidr[index];
1205 static void csselr_write(CPUARMState *env, const ARMCPRegInfo *ri,
1208 raw_write(env, ri, value & 0xf);
1211 static uint64_t isr_read(CPUARMState *env, const ARMCPRegInfo *ri)
1213 CPUState *cs = ENV_GET_CPU(env);
1216 if (cs->interrupt_request & CPU_INTERRUPT_HARD) {
1219 if (cs->interrupt_request & CPU_INTERRUPT_FIQ) {
1222 /* External aborts are not possible in QEMU so A bit is always clear */
1226 static const ARMCPRegInfo v7_cp_reginfo[] = {
1227 /* the old v6 WFI, UNPREDICTABLE in v7 but we choose to NOP */
1228 { .name = "NOP", .cp = 15, .crn = 7, .crm = 0, .opc1 = 0, .opc2 = 4,
1229 .access = PL1_W, .type = ARM_CP_NOP },
1230 /* Performance monitors are implementation defined in v7,
1231 * but with an ARM recommended set of registers, which we
1232 * follow (although we don't actually implement any counters)
1234 * Performance registers fall into three categories:
1235 * (a) always UNDEF in PL0, RW in PL1 (PMINTENSET, PMINTENCLR)
1236 * (b) RO in PL0 (ie UNDEF on write), RW in PL1 (PMUSERENR)
1237 * (c) UNDEF in PL0 if PMUSERENR.EN==0, otherwise accessible (all others)
1238 * For the cases controlled by PMUSERENR we must set .access to PL0_RW
1239 * or PL0_RO as appropriate and then check PMUSERENR in the helper fn.
1241 { .name = "PMCNTENSET", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 1,
1242 .access = PL0_RW, .type = ARM_CP_ALIAS,
1243 .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmcnten),
1244 .writefn = pmcntenset_write,
1245 .accessfn = pmreg_access,
1246 .raw_writefn = raw_write },
1247 { .name = "PMCNTENSET_EL0", .state = ARM_CP_STATE_AA64,
1248 .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 1,
1249 .access = PL0_RW, .accessfn = pmreg_access,
1250 .fieldoffset = offsetof(CPUARMState, cp15.c9_pmcnten), .resetvalue = 0,
1251 .writefn = pmcntenset_write, .raw_writefn = raw_write },
1252 { .name = "PMCNTENCLR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 2,
1254 .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmcnten),
1255 .accessfn = pmreg_access,
1256 .writefn = pmcntenclr_write,
1257 .type = ARM_CP_ALIAS },
1258 { .name = "PMCNTENCLR_EL0", .state = ARM_CP_STATE_AA64,
1259 .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 2,
1260 .access = PL0_RW, .accessfn = pmreg_access,
1261 .type = ARM_CP_ALIAS,
1262 .fieldoffset = offsetof(CPUARMState, cp15.c9_pmcnten),
1263 .writefn = pmcntenclr_write },
1264 { .name = "PMOVSR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 3,
1265 .access = PL0_RW, .fieldoffset = offsetof(CPUARMState, cp15.c9_pmovsr),
1266 .accessfn = pmreg_access,
1267 .writefn = pmovsr_write,
1268 .raw_writefn = raw_write },
1269 { .name = "PMOVSCLR_EL0", .state = ARM_CP_STATE_AA64,
1270 .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 3,
1271 .access = PL0_RW, .accessfn = pmreg_access,
1272 .type = ARM_CP_ALIAS,
1273 .fieldoffset = offsetof(CPUARMState, cp15.c9_pmovsr),
1274 .writefn = pmovsr_write,
1275 .raw_writefn = raw_write },
1276 /* Unimplemented so WI. */
1277 { .name = "PMSWINC", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 4,
1278 .access = PL0_W, .accessfn = pmreg_access_swinc, .type = ARM_CP_NOP },
1279 #ifndef CONFIG_USER_ONLY
1280 { .name = "PMSELR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 5,
1281 .access = PL0_RW, .type = ARM_CP_ALIAS,
1282 .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmselr),
1283 .accessfn = pmreg_access_selr, .writefn = pmselr_write,
1284 .raw_writefn = raw_write},
1285 { .name = "PMSELR_EL0", .state = ARM_CP_STATE_AA64,
1286 .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 5,
1287 .access = PL0_RW, .accessfn = pmreg_access_selr,
1288 .fieldoffset = offsetof(CPUARMState, cp15.c9_pmselr),
1289 .writefn = pmselr_write, .raw_writefn = raw_write, },
1290 { .name = "PMCCNTR", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 0,
1291 .access = PL0_RW, .resetvalue = 0, .type = ARM_CP_IO,
1292 .readfn = pmccntr_read, .writefn = pmccntr_write32,
1293 .accessfn = pmreg_access_ccntr },
1294 { .name = "PMCCNTR_EL0", .state = ARM_CP_STATE_AA64,
1295 .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 13, .opc2 = 0,
1296 .access = PL0_RW, .accessfn = pmreg_access_ccntr,
1298 .readfn = pmccntr_read, .writefn = pmccntr_write, },
1300 { .name = "PMCCFILTR_EL0", .state = ARM_CP_STATE_AA64,
1301 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 15, .opc2 = 7,
1302 .writefn = pmccfiltr_write,
1303 .access = PL0_RW, .accessfn = pmreg_access,
1305 .fieldoffset = offsetof(CPUARMState, cp15.pmccfiltr_el0),
1307 { .name = "PMXEVTYPER", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 1,
1308 .access = PL0_RW, .type = ARM_CP_NO_RAW, .accessfn = pmreg_access,
1309 .writefn = pmxevtyper_write, .readfn = pmxevtyper_read },
1310 { .name = "PMXEVTYPER_EL0", .state = ARM_CP_STATE_AA64,
1311 .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 13, .opc2 = 1,
1312 .access = PL0_RW, .type = ARM_CP_NO_RAW, .accessfn = pmreg_access,
1313 .writefn = pmxevtyper_write, .readfn = pmxevtyper_read },
1314 /* Unimplemented, RAZ/WI. */
1315 { .name = "PMXEVCNTR", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 2,
1316 .access = PL0_RW, .type = ARM_CP_CONST, .resetvalue = 0,
1317 .accessfn = pmreg_access_xevcntr },
1318 { .name = "PMUSERENR", .cp = 15, .crn = 9, .crm = 14, .opc1 = 0, .opc2 = 0,
1319 .access = PL0_R | PL1_RW, .accessfn = access_tpm,
1320 .fieldoffset = offsetof(CPUARMState, cp15.c9_pmuserenr),
1322 .writefn = pmuserenr_write, .raw_writefn = raw_write },
1323 { .name = "PMUSERENR_EL0", .state = ARM_CP_STATE_AA64,
1324 .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 14, .opc2 = 0,
1325 .access = PL0_R | PL1_RW, .accessfn = access_tpm, .type = ARM_CP_ALIAS,
1326 .fieldoffset = offsetof(CPUARMState, cp15.c9_pmuserenr),
1328 .writefn = pmuserenr_write, .raw_writefn = raw_write },
1329 { .name = "PMINTENSET", .cp = 15, .crn = 9, .crm = 14, .opc1 = 0, .opc2 = 1,
1330 .access = PL1_RW, .accessfn = access_tpm,
1331 .type = ARM_CP_ALIAS,
1332 .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pminten),
1334 .writefn = pmintenset_write, .raw_writefn = raw_write },
1335 { .name = "PMINTENSET_EL1", .state = ARM_CP_STATE_AA64,
1336 .opc0 = 3, .opc1 = 0, .crn = 9, .crm = 14, .opc2 = 1,
1337 .access = PL1_RW, .accessfn = access_tpm,
1339 .fieldoffset = offsetof(CPUARMState, cp15.c9_pminten),
1340 .writefn = pmintenset_write, .raw_writefn = raw_write,
1341 .resetvalue = 0x0 },
1342 { .name = "PMINTENCLR", .cp = 15, .crn = 9, .crm = 14, .opc1 = 0, .opc2 = 2,
1343 .access = PL1_RW, .accessfn = access_tpm, .type = ARM_CP_ALIAS,
1344 .fieldoffset = offsetof(CPUARMState, cp15.c9_pminten),
1345 .writefn = pmintenclr_write, },
1346 { .name = "PMINTENCLR_EL1", .state = ARM_CP_STATE_AA64,
1347 .opc0 = 3, .opc1 = 0, .crn = 9, .crm = 14, .opc2 = 2,
1348 .access = PL1_RW, .accessfn = access_tpm, .type = ARM_CP_ALIAS,
1349 .fieldoffset = offsetof(CPUARMState, cp15.c9_pminten),
1350 .writefn = pmintenclr_write },
1351 { .name = "CCSIDR", .state = ARM_CP_STATE_BOTH,
1352 .opc0 = 3, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = 0,
1353 .access = PL1_R, .readfn = ccsidr_read, .type = ARM_CP_NO_RAW },
1354 { .name = "CSSELR", .state = ARM_CP_STATE_BOTH,
1355 .opc0 = 3, .crn = 0, .crm = 0, .opc1 = 2, .opc2 = 0,
1356 .access = PL1_RW, .writefn = csselr_write, .resetvalue = 0,
1357 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.csselr_s),
1358 offsetof(CPUARMState, cp15.csselr_ns) } },
1359 /* Auxiliary ID register: this actually has an IMPDEF value but for now
1360 * just RAZ for all cores:
1362 { .name = "AIDR", .state = ARM_CP_STATE_BOTH,
1363 .opc0 = 3, .opc1 = 1, .crn = 0, .crm = 0, .opc2 = 7,
1364 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
1365 /* Auxiliary fault status registers: these also are IMPDEF, and we
1366 * choose to RAZ/WI for all cores.
1368 { .name = "AFSR0_EL1", .state = ARM_CP_STATE_BOTH,
1369 .opc0 = 3, .opc1 = 0, .crn = 5, .crm = 1, .opc2 = 0,
1370 .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
1371 { .name = "AFSR1_EL1", .state = ARM_CP_STATE_BOTH,
1372 .opc0 = 3, .opc1 = 0, .crn = 5, .crm = 1, .opc2 = 1,
1373 .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
1374 /* MAIR can just read-as-written because we don't implement caches
1375 * and so don't need to care about memory attributes.
1377 { .name = "MAIR_EL1", .state = ARM_CP_STATE_AA64,
1378 .opc0 = 3, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 0,
1379 .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.mair_el[1]),
1381 { .name = "MAIR_EL3", .state = ARM_CP_STATE_AA64,
1382 .opc0 = 3, .opc1 = 6, .crn = 10, .crm = 2, .opc2 = 0,
1383 .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.mair_el[3]),
1385 /* For non-long-descriptor page tables these are PRRR and NMRR;
1386 * regardless they still act as reads-as-written for QEMU.
1388 /* MAIR0/1 are defined separately from their 64-bit counterpart which
1389 * allows them to assign the correct fieldoffset based on the endianness
1390 * handled in the field definitions.
1392 { .name = "MAIR0", .state = ARM_CP_STATE_AA32,
1393 .cp = 15, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 0, .access = PL1_RW,
1394 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.mair0_s),
1395 offsetof(CPUARMState, cp15.mair0_ns) },
1396 .resetfn = arm_cp_reset_ignore },
1397 { .name = "MAIR1", .state = ARM_CP_STATE_AA32,
1398 .cp = 15, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 1, .access = PL1_RW,
1399 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.mair1_s),
1400 offsetof(CPUARMState, cp15.mair1_ns) },
1401 .resetfn = arm_cp_reset_ignore },
1402 { .name = "ISR_EL1", .state = ARM_CP_STATE_BOTH,
1403 .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 1, .opc2 = 0,
1404 .type = ARM_CP_NO_RAW, .access = PL1_R, .readfn = isr_read },
1405 /* 32 bit ITLB invalidates */
1406 { .name = "ITLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 0,
1407 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_write },
1408 { .name = "ITLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 1,
1409 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write },
1410 { .name = "ITLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 2,
1411 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiasid_write },
1412 /* 32 bit DTLB invalidates */
1413 { .name = "DTLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 0,
1414 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_write },
1415 { .name = "DTLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 1,
1416 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write },
1417 { .name = "DTLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 2,
1418 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiasid_write },
1419 /* 32 bit TLB invalidates */
1420 { .name = "TLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 0,
1421 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_write },
1422 { .name = "TLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 1,
1423 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write },
1424 { .name = "TLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 2,
1425 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiasid_write },
1426 { .name = "TLBIMVAA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 3,
1427 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimvaa_write },
1431 static const ARMCPRegInfo v7mp_cp_reginfo[] = {
1432 /* 32 bit TLB invalidates, Inner Shareable */
1433 { .name = "TLBIALLIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 0,
1434 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_is_write },
1435 { .name = "TLBIMVAIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 1,
1436 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_is_write },
1437 { .name = "TLBIASIDIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 2,
1438 .type = ARM_CP_NO_RAW, .access = PL1_W,
1439 .writefn = tlbiasid_is_write },
1440 { .name = "TLBIMVAAIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 3,
1441 .type = ARM_CP_NO_RAW, .access = PL1_W,
1442 .writefn = tlbimvaa_is_write },
1446 static void teecr_write(CPUARMState *env, const ARMCPRegInfo *ri,
1453 static CPAccessResult teehbr_access(CPUARMState *env, const ARMCPRegInfo *ri,
1456 if (arm_current_el(env) == 0 && (env->teecr & 1)) {
1457 return CP_ACCESS_TRAP;
1459 return CP_ACCESS_OK;
1462 static const ARMCPRegInfo t2ee_cp_reginfo[] = {
1463 { .name = "TEECR", .cp = 14, .crn = 0, .crm = 0, .opc1 = 6, .opc2 = 0,
1464 .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, teecr),
1466 .writefn = teecr_write },
1467 { .name = "TEEHBR", .cp = 14, .crn = 1, .crm = 0, .opc1 = 6, .opc2 = 0,
1468 .access = PL0_RW, .fieldoffset = offsetof(CPUARMState, teehbr),
1469 .accessfn = teehbr_access, .resetvalue = 0 },
1473 static const ARMCPRegInfo v6k_cp_reginfo[] = {
1474 { .name = "TPIDR_EL0", .state = ARM_CP_STATE_AA64,
1475 .opc0 = 3, .opc1 = 3, .opc2 = 2, .crn = 13, .crm = 0,
1477 .fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[0]), .resetvalue = 0 },
1478 { .name = "TPIDRURW", .cp = 15, .crn = 13, .crm = 0, .opc1 = 0, .opc2 = 2,
1480 .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tpidrurw_s),
1481 offsetoflow32(CPUARMState, cp15.tpidrurw_ns) },
1482 .resetfn = arm_cp_reset_ignore },
1483 { .name = "TPIDRRO_EL0", .state = ARM_CP_STATE_AA64,
1484 .opc0 = 3, .opc1 = 3, .opc2 = 3, .crn = 13, .crm = 0,
1485 .access = PL0_R|PL1_W,
1486 .fieldoffset = offsetof(CPUARMState, cp15.tpidrro_el[0]),
1488 { .name = "TPIDRURO", .cp = 15, .crn = 13, .crm = 0, .opc1 = 0, .opc2 = 3,
1489 .access = PL0_R|PL1_W,
1490 .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tpidruro_s),
1491 offsetoflow32(CPUARMState, cp15.tpidruro_ns) },
1492 .resetfn = arm_cp_reset_ignore },
1493 { .name = "TPIDR_EL1", .state = ARM_CP_STATE_AA64,
1494 .opc0 = 3, .opc1 = 0, .opc2 = 4, .crn = 13, .crm = 0,
1496 .fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[1]), .resetvalue = 0 },
1497 { .name = "TPIDRPRW", .opc1 = 0, .cp = 15, .crn = 13, .crm = 0, .opc2 = 4,
1499 .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tpidrprw_s),
1500 offsetoflow32(CPUARMState, cp15.tpidrprw_ns) },
1505 #ifndef CONFIG_USER_ONLY
1507 static CPAccessResult gt_cntfrq_access(CPUARMState *env, const ARMCPRegInfo *ri,
1510 /* CNTFRQ: not visible from PL0 if both PL0PCTEN and PL0VCTEN are zero.
1511 * Writable only at the highest implemented exception level.
1513 int el = arm_current_el(env);
1517 if (!extract32(env->cp15.c14_cntkctl, 0, 2)) {
1518 return CP_ACCESS_TRAP;
1522 if (!isread && ri->state == ARM_CP_STATE_AA32 &&
1523 arm_is_secure_below_el3(env)) {
1524 /* Accesses from 32-bit Secure EL1 UNDEF (*not* trap to EL3!) */
1525 return CP_ACCESS_TRAP_UNCATEGORIZED;
1533 if (!isread && el < arm_highest_el(env)) {
1534 return CP_ACCESS_TRAP_UNCATEGORIZED;
1537 return CP_ACCESS_OK;
1540 static CPAccessResult gt_counter_access(CPUARMState *env, int timeridx,
1543 unsigned int cur_el = arm_current_el(env);
1544 bool secure = arm_is_secure(env);
1546 /* CNT[PV]CT: not visible from PL0 if ELO[PV]CTEN is zero */
1548 !extract32(env->cp15.c14_cntkctl, timeridx, 1)) {
1549 return CP_ACCESS_TRAP;
1552 if (arm_feature(env, ARM_FEATURE_EL2) &&
1553 timeridx == GTIMER_PHYS && !secure && cur_el < 2 &&
1554 !extract32(env->cp15.cnthctl_el2, 0, 1)) {
1555 return CP_ACCESS_TRAP_EL2;
1557 return CP_ACCESS_OK;
1560 static CPAccessResult gt_timer_access(CPUARMState *env, int timeridx,
1563 unsigned int cur_el = arm_current_el(env);
1564 bool secure = arm_is_secure(env);
1566 /* CNT[PV]_CVAL, CNT[PV]_CTL, CNT[PV]_TVAL: not visible from PL0 if
1567 * EL0[PV]TEN is zero.
1570 !extract32(env->cp15.c14_cntkctl, 9 - timeridx, 1)) {
1571 return CP_ACCESS_TRAP;
1574 if (arm_feature(env, ARM_FEATURE_EL2) &&
1575 timeridx == GTIMER_PHYS && !secure && cur_el < 2 &&
1576 !extract32(env->cp15.cnthctl_el2, 1, 1)) {
1577 return CP_ACCESS_TRAP_EL2;
1579 return CP_ACCESS_OK;
1582 static CPAccessResult gt_pct_access(CPUARMState *env,
1583 const ARMCPRegInfo *ri,
1586 return gt_counter_access(env, GTIMER_PHYS, isread);
1589 static CPAccessResult gt_vct_access(CPUARMState *env,
1590 const ARMCPRegInfo *ri,
1593 return gt_counter_access(env, GTIMER_VIRT, isread);
1596 static CPAccessResult gt_ptimer_access(CPUARMState *env, const ARMCPRegInfo *ri,
1599 return gt_timer_access(env, GTIMER_PHYS, isread);
1602 static CPAccessResult gt_vtimer_access(CPUARMState *env, const ARMCPRegInfo *ri,
1605 return gt_timer_access(env, GTIMER_VIRT, isread);
1608 static CPAccessResult gt_stimer_access(CPUARMState *env,
1609 const ARMCPRegInfo *ri,
1612 /* The AArch64 register view of the secure physical timer is
1613 * always accessible from EL3, and configurably accessible from
1616 switch (arm_current_el(env)) {
1618 if (!arm_is_secure(env)) {
1619 return CP_ACCESS_TRAP;
1621 if (!(env->cp15.scr_el3 & SCR_ST)) {
1622 return CP_ACCESS_TRAP_EL3;
1624 return CP_ACCESS_OK;
1627 return CP_ACCESS_TRAP;
1629 return CP_ACCESS_OK;
1631 g_assert_not_reached();
1635 static uint64_t gt_get_countervalue(CPUARMState *env)
1637 return qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) / GTIMER_SCALE;
1640 static void gt_recalc_timer(ARMCPU *cpu, int timeridx)
1642 ARMGenericTimer *gt = &cpu->env.cp15.c14_timer[timeridx];
1645 /* Timer enabled: calculate and set current ISTATUS, irq, and
1646 * reset timer to when ISTATUS next has to change
1648 uint64_t offset = timeridx == GTIMER_VIRT ?
1649 cpu->env.cp15.cntvoff_el2 : 0;
1650 uint64_t count = gt_get_countervalue(&cpu->env);
1651 /* Note that this must be unsigned 64 bit arithmetic: */
1652 int istatus = count - offset >= gt->cval;
1656 gt->ctl = deposit32(gt->ctl, 2, 1, istatus);
1658 irqstate = (istatus && !(gt->ctl & 2));
1659 qemu_set_irq(cpu->gt_timer_outputs[timeridx], irqstate);
1662 /* Next transition is when count rolls back over to zero */
1663 nexttick = UINT64_MAX;
1665 /* Next transition is when we hit cval */
1666 nexttick = gt->cval + offset;
1668 /* Note that the desired next expiry time might be beyond the
1669 * signed-64-bit range of a QEMUTimer -- in this case we just
1670 * set the timer for as far in the future as possible. When the
1671 * timer expires we will reset the timer for any remaining period.
1673 if (nexttick > INT64_MAX / GTIMER_SCALE) {
1674 nexttick = INT64_MAX / GTIMER_SCALE;
1676 timer_mod(cpu->gt_timer[timeridx], nexttick);
1677 trace_arm_gt_recalc(timeridx, irqstate, nexttick);
1679 /* Timer disabled: ISTATUS and timer output always clear */
1681 qemu_set_irq(cpu->gt_timer_outputs[timeridx], 0);
1682 timer_del(cpu->gt_timer[timeridx]);
1683 trace_arm_gt_recalc_disabled(timeridx);
1687 static void gt_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri,
1690 ARMCPU *cpu = arm_env_get_cpu(env);
1692 timer_del(cpu->gt_timer[timeridx]);
1695 static uint64_t gt_cnt_read(CPUARMState *env, const ARMCPRegInfo *ri)
1697 return gt_get_countervalue(env);
1700 static uint64_t gt_virt_cnt_read(CPUARMState *env, const ARMCPRegInfo *ri)
1702 return gt_get_countervalue(env) - env->cp15.cntvoff_el2;
1705 static void gt_cval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1709 trace_arm_gt_cval_write(timeridx, value);
1710 env->cp15.c14_timer[timeridx].cval = value;
1711 gt_recalc_timer(arm_env_get_cpu(env), timeridx);
1714 static uint64_t gt_tval_read(CPUARMState *env, const ARMCPRegInfo *ri,
1717 uint64_t offset = timeridx == GTIMER_VIRT ? env->cp15.cntvoff_el2 : 0;
1719 return (uint32_t)(env->cp15.c14_timer[timeridx].cval -
1720 (gt_get_countervalue(env) - offset));
1723 static void gt_tval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1727 uint64_t offset = timeridx == GTIMER_VIRT ? env->cp15.cntvoff_el2 : 0;
1729 trace_arm_gt_tval_write(timeridx, value);
1730 env->cp15.c14_timer[timeridx].cval = gt_get_countervalue(env) - offset +
1731 sextract64(value, 0, 32);
1732 gt_recalc_timer(arm_env_get_cpu(env), timeridx);
1735 static void gt_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri,
1739 ARMCPU *cpu = arm_env_get_cpu(env);
1740 uint32_t oldval = env->cp15.c14_timer[timeridx].ctl;
1742 trace_arm_gt_ctl_write(timeridx, value);
1743 env->cp15.c14_timer[timeridx].ctl = deposit64(oldval, 0, 2, value);
1744 if ((oldval ^ value) & 1) {
1745 /* Enable toggled */
1746 gt_recalc_timer(cpu, timeridx);
1747 } else if ((oldval ^ value) & 2) {
1748 /* IMASK toggled: don't need to recalculate,
1749 * just set the interrupt line based on ISTATUS
1751 int irqstate = (oldval & 4) && !(value & 2);
1753 trace_arm_gt_imask_toggle(timeridx, irqstate);
1754 qemu_set_irq(cpu->gt_timer_outputs[timeridx], irqstate);
1758 static void gt_phys_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri)
1760 gt_timer_reset(env, ri, GTIMER_PHYS);
1763 static void gt_phys_cval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1766 gt_cval_write(env, ri, GTIMER_PHYS, value);
1769 static uint64_t gt_phys_tval_read(CPUARMState *env, const ARMCPRegInfo *ri)
1771 return gt_tval_read(env, ri, GTIMER_PHYS);
1774 static void gt_phys_tval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1777 gt_tval_write(env, ri, GTIMER_PHYS, value);
1780 static void gt_phys_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri,
1783 gt_ctl_write(env, ri, GTIMER_PHYS, value);
1786 static void gt_virt_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri)
1788 gt_timer_reset(env, ri, GTIMER_VIRT);
1791 static void gt_virt_cval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1794 gt_cval_write(env, ri, GTIMER_VIRT, value);
1797 static uint64_t gt_virt_tval_read(CPUARMState *env, const ARMCPRegInfo *ri)
1799 return gt_tval_read(env, ri, GTIMER_VIRT);
1802 static void gt_virt_tval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1805 gt_tval_write(env, ri, GTIMER_VIRT, value);
1808 static void gt_virt_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri,
1811 gt_ctl_write(env, ri, GTIMER_VIRT, value);
1814 static void gt_cntvoff_write(CPUARMState *env, const ARMCPRegInfo *ri,
1817 ARMCPU *cpu = arm_env_get_cpu(env);
1819 trace_arm_gt_cntvoff_write(value);
1820 raw_write(env, ri, value);
1821 gt_recalc_timer(cpu, GTIMER_VIRT);
1824 static void gt_hyp_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri)
1826 gt_timer_reset(env, ri, GTIMER_HYP);
1829 static void gt_hyp_cval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1832 gt_cval_write(env, ri, GTIMER_HYP, value);
1835 static uint64_t gt_hyp_tval_read(CPUARMState *env, const ARMCPRegInfo *ri)
1837 return gt_tval_read(env, ri, GTIMER_HYP);
1840 static void gt_hyp_tval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1843 gt_tval_write(env, ri, GTIMER_HYP, value);
1846 static void gt_hyp_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri,
1849 gt_ctl_write(env, ri, GTIMER_HYP, value);
1852 static void gt_sec_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri)
1854 gt_timer_reset(env, ri, GTIMER_SEC);
1857 static void gt_sec_cval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1860 gt_cval_write(env, ri, GTIMER_SEC, value);
1863 static uint64_t gt_sec_tval_read(CPUARMState *env, const ARMCPRegInfo *ri)
1865 return gt_tval_read(env, ri, GTIMER_SEC);
1868 static void gt_sec_tval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1871 gt_tval_write(env, ri, GTIMER_SEC, value);
1874 static void gt_sec_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri,
1877 gt_ctl_write(env, ri, GTIMER_SEC, value);
1880 void arm_gt_ptimer_cb(void *opaque)
1882 ARMCPU *cpu = opaque;
1884 gt_recalc_timer(cpu, GTIMER_PHYS);
1887 void arm_gt_vtimer_cb(void *opaque)
1889 ARMCPU *cpu = opaque;
1891 gt_recalc_timer(cpu, GTIMER_VIRT);
1894 void arm_gt_htimer_cb(void *opaque)
1896 ARMCPU *cpu = opaque;
1898 gt_recalc_timer(cpu, GTIMER_HYP);
1901 void arm_gt_stimer_cb(void *opaque)
1903 ARMCPU *cpu = opaque;
1905 gt_recalc_timer(cpu, GTIMER_SEC);
1908 static const ARMCPRegInfo generic_timer_cp_reginfo[] = {
1909 /* Note that CNTFRQ is purely reads-as-written for the benefit
1910 * of software; writing it doesn't actually change the timer frequency.
1911 * Our reset value matches the fixed frequency we implement the timer at.
1913 { .name = "CNTFRQ", .cp = 15, .crn = 14, .crm = 0, .opc1 = 0, .opc2 = 0,
1914 .type = ARM_CP_ALIAS,
1915 .access = PL1_RW | PL0_R, .accessfn = gt_cntfrq_access,
1916 .fieldoffset = offsetoflow32(CPUARMState, cp15.c14_cntfrq),
1918 { .name = "CNTFRQ_EL0", .state = ARM_CP_STATE_AA64,
1919 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 0, .opc2 = 0,
1920 .access = PL1_RW | PL0_R, .accessfn = gt_cntfrq_access,
1921 .fieldoffset = offsetof(CPUARMState, cp15.c14_cntfrq),
1922 .resetvalue = (1000 * 1000 * 1000) / GTIMER_SCALE,
1924 /* overall control: mostly access permissions */
1925 { .name = "CNTKCTL", .state = ARM_CP_STATE_BOTH,
1926 .opc0 = 3, .opc1 = 0, .crn = 14, .crm = 1, .opc2 = 0,
1928 .fieldoffset = offsetof(CPUARMState, cp15.c14_cntkctl),
1931 /* per-timer control */
1932 { .name = "CNTP_CTL", .cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 1,
1933 .secure = ARM_CP_SECSTATE_NS,
1934 .type = ARM_CP_IO | ARM_CP_ALIAS, .access = PL1_RW | PL0_R,
1935 .accessfn = gt_ptimer_access,
1936 .fieldoffset = offsetoflow32(CPUARMState,
1937 cp15.c14_timer[GTIMER_PHYS].ctl),
1938 .writefn = gt_phys_ctl_write, .raw_writefn = raw_write,
1940 { .name = "CNTP_CTL(S)",
1941 .cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 1,
1942 .secure = ARM_CP_SECSTATE_S,
1943 .type = ARM_CP_IO | ARM_CP_ALIAS, .access = PL1_RW | PL0_R,
1944 .accessfn = gt_ptimer_access,
1945 .fieldoffset = offsetoflow32(CPUARMState,
1946 cp15.c14_timer[GTIMER_SEC].ctl),
1947 .writefn = gt_sec_ctl_write, .raw_writefn = raw_write,
1949 { .name = "CNTP_CTL_EL0", .state = ARM_CP_STATE_AA64,
1950 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 2, .opc2 = 1,
1951 .type = ARM_CP_IO, .access = PL1_RW | PL0_R,
1952 .accessfn = gt_ptimer_access,
1953 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_PHYS].ctl),
1955 .writefn = gt_phys_ctl_write, .raw_writefn = raw_write,
1957 { .name = "CNTV_CTL", .cp = 15, .crn = 14, .crm = 3, .opc1 = 0, .opc2 = 1,
1958 .type = ARM_CP_IO | ARM_CP_ALIAS, .access = PL1_RW | PL0_R,
1959 .accessfn = gt_vtimer_access,
1960 .fieldoffset = offsetoflow32(CPUARMState,
1961 cp15.c14_timer[GTIMER_VIRT].ctl),
1962 .writefn = gt_virt_ctl_write, .raw_writefn = raw_write,
1964 { .name = "CNTV_CTL_EL0", .state = ARM_CP_STATE_AA64,
1965 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 3, .opc2 = 1,
1966 .type = ARM_CP_IO, .access = PL1_RW | PL0_R,
1967 .accessfn = gt_vtimer_access,
1968 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_VIRT].ctl),
1970 .writefn = gt_virt_ctl_write, .raw_writefn = raw_write,
1972 /* TimerValue views: a 32 bit downcounting view of the underlying state */
1973 { .name = "CNTP_TVAL", .cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 0,
1974 .secure = ARM_CP_SECSTATE_NS,
1975 .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R,
1976 .accessfn = gt_ptimer_access,
1977 .readfn = gt_phys_tval_read, .writefn = gt_phys_tval_write,
1979 { .name = "CNTP_TVAL(S)",
1980 .cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 0,
1981 .secure = ARM_CP_SECSTATE_S,
1982 .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R,
1983 .accessfn = gt_ptimer_access,
1984 .readfn = gt_sec_tval_read, .writefn = gt_sec_tval_write,
1986 { .name = "CNTP_TVAL_EL0", .state = ARM_CP_STATE_AA64,
1987 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 2, .opc2 = 0,
1988 .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R,
1989 .accessfn = gt_ptimer_access, .resetfn = gt_phys_timer_reset,
1990 .readfn = gt_phys_tval_read, .writefn = gt_phys_tval_write,
1992 { .name = "CNTV_TVAL", .cp = 15, .crn = 14, .crm = 3, .opc1 = 0, .opc2 = 0,
1993 .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R,
1994 .accessfn = gt_vtimer_access,
1995 .readfn = gt_virt_tval_read, .writefn = gt_virt_tval_write,
1997 { .name = "CNTV_TVAL_EL0", .state = ARM_CP_STATE_AA64,
1998 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 3, .opc2 = 0,
1999 .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R,
2000 .accessfn = gt_vtimer_access, .resetfn = gt_virt_timer_reset,
2001 .readfn = gt_virt_tval_read, .writefn = gt_virt_tval_write,
2003 /* The counter itself */
2004 { .name = "CNTPCT", .cp = 15, .crm = 14, .opc1 = 0,
2005 .access = PL0_R, .type = ARM_CP_64BIT | ARM_CP_NO_RAW | ARM_CP_IO,
2006 .accessfn = gt_pct_access,
2007 .readfn = gt_cnt_read, .resetfn = arm_cp_reset_ignore,
2009 { .name = "CNTPCT_EL0", .state = ARM_CP_STATE_AA64,
2010 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 0, .opc2 = 1,
2011 .access = PL0_R, .type = ARM_CP_NO_RAW | ARM_CP_IO,
2012 .accessfn = gt_pct_access, .readfn = gt_cnt_read,
2014 { .name = "CNTVCT", .cp = 15, .crm = 14, .opc1 = 1,
2015 .access = PL0_R, .type = ARM_CP_64BIT | ARM_CP_NO_RAW | ARM_CP_IO,
2016 .accessfn = gt_vct_access,
2017 .readfn = gt_virt_cnt_read, .resetfn = arm_cp_reset_ignore,
2019 { .name = "CNTVCT_EL0", .state = ARM_CP_STATE_AA64,
2020 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 0, .opc2 = 2,
2021 .access = PL0_R, .type = ARM_CP_NO_RAW | ARM_CP_IO,
2022 .accessfn = gt_vct_access, .readfn = gt_virt_cnt_read,
2024 /* Comparison value, indicating when the timer goes off */
2025 { .name = "CNTP_CVAL", .cp = 15, .crm = 14, .opc1 = 2,
2026 .secure = ARM_CP_SECSTATE_NS,
2027 .access = PL1_RW | PL0_R,
2028 .type = ARM_CP_64BIT | ARM_CP_IO | ARM_CP_ALIAS,
2029 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_PHYS].cval),
2030 .accessfn = gt_ptimer_access,
2031 .writefn = gt_phys_cval_write, .raw_writefn = raw_write,
2033 { .name = "CNTP_CVAL(S)", .cp = 15, .crm = 14, .opc1 = 2,
2034 .secure = ARM_CP_SECSTATE_S,
2035 .access = PL1_RW | PL0_R,
2036 .type = ARM_CP_64BIT | ARM_CP_IO | ARM_CP_ALIAS,
2037 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_SEC].cval),
2038 .accessfn = gt_ptimer_access,
2039 .writefn = gt_sec_cval_write, .raw_writefn = raw_write,
2041 { .name = "CNTP_CVAL_EL0", .state = ARM_CP_STATE_AA64,
2042 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 2, .opc2 = 2,
2043 .access = PL1_RW | PL0_R,
2045 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_PHYS].cval),
2046 .resetvalue = 0, .accessfn = gt_ptimer_access,
2047 .writefn = gt_phys_cval_write, .raw_writefn = raw_write,
2049 { .name = "CNTV_CVAL", .cp = 15, .crm = 14, .opc1 = 3,
2050 .access = PL1_RW | PL0_R,
2051 .type = ARM_CP_64BIT | ARM_CP_IO | ARM_CP_ALIAS,
2052 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_VIRT].cval),
2053 .accessfn = gt_vtimer_access,
2054 .writefn = gt_virt_cval_write, .raw_writefn = raw_write,
2056 { .name = "CNTV_CVAL_EL0", .state = ARM_CP_STATE_AA64,
2057 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 3, .opc2 = 2,
2058 .access = PL1_RW | PL0_R,
2060 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_VIRT].cval),
2061 .resetvalue = 0, .accessfn = gt_vtimer_access,
2062 .writefn = gt_virt_cval_write, .raw_writefn = raw_write,
2064 /* Secure timer -- this is actually restricted to only EL3
2065 * and configurably Secure-EL1 via the accessfn.
2067 { .name = "CNTPS_TVAL_EL1", .state = ARM_CP_STATE_AA64,
2068 .opc0 = 3, .opc1 = 7, .crn = 14, .crm = 2, .opc2 = 0,
2069 .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW,
2070 .accessfn = gt_stimer_access,
2071 .readfn = gt_sec_tval_read,
2072 .writefn = gt_sec_tval_write,
2073 .resetfn = gt_sec_timer_reset,
2075 { .name = "CNTPS_CTL_EL1", .state = ARM_CP_STATE_AA64,
2076 .opc0 = 3, .opc1 = 7, .crn = 14, .crm = 2, .opc2 = 1,
2077 .type = ARM_CP_IO, .access = PL1_RW,
2078 .accessfn = gt_stimer_access,
2079 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_SEC].ctl),
2081 .writefn = gt_sec_ctl_write, .raw_writefn = raw_write,
2083 { .name = "CNTPS_CVAL_EL1", .state = ARM_CP_STATE_AA64,
2084 .opc0 = 3, .opc1 = 7, .crn = 14, .crm = 2, .opc2 = 2,
2085 .type = ARM_CP_IO, .access = PL1_RW,
2086 .accessfn = gt_stimer_access,
2087 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_SEC].cval),
2088 .writefn = gt_sec_cval_write, .raw_writefn = raw_write,
2094 /* In user-mode none of the generic timer registers are accessible,
2095 * and their implementation depends on QEMU_CLOCK_VIRTUAL and qdev gpio outputs,
2096 * so instead just don't register any of them.
2098 static const ARMCPRegInfo generic_timer_cp_reginfo[] = {
2104 static void par_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
2106 if (arm_feature(env, ARM_FEATURE_LPAE)) {
2107 raw_write(env, ri, value);
2108 } else if (arm_feature(env, ARM_FEATURE_V7)) {
2109 raw_write(env, ri, value & 0xfffff6ff);
2111 raw_write(env, ri, value & 0xfffff1ff);
2115 #ifndef CONFIG_USER_ONLY
2116 /* get_phys_addr() isn't present for user-mode-only targets */
2118 static CPAccessResult ats_access(CPUARMState *env, const ARMCPRegInfo *ri,
2122 /* The ATS12NSO* operations must trap to EL3 if executed in
2123 * Secure EL1 (which can only happen if EL3 is AArch64).
2124 * They are simply UNDEF if executed from NS EL1.
2125 * They function normally from EL2 or EL3.
2127 if (arm_current_el(env) == 1) {
2128 if (arm_is_secure_below_el3(env)) {
2129 return CP_ACCESS_TRAP_UNCATEGORIZED_EL3;
2131 return CP_ACCESS_TRAP_UNCATEGORIZED;
2134 return CP_ACCESS_OK;
2137 static uint64_t do_ats_write(CPUARMState *env, uint64_t value,
2138 MMUAccessType access_type, ARMMMUIdx mmu_idx)
2141 target_ulong page_size;
2146 MemTxAttrs attrs = {};
2147 ARMMMUFaultInfo fi = {};
2149 ret = get_phys_addr(env, value, access_type, mmu_idx,
2150 &phys_addr, &attrs, &prot, &page_size, &fsr, &fi);
2151 if (extended_addresses_enabled(env)) {
2152 /* fsr is a DFSR/IFSR value for the long descriptor
2153 * translation table format, but with WnR always clear.
2154 * Convert it to a 64-bit PAR.
2156 par64 = (1 << 11); /* LPAE bit always set */
2158 par64 |= phys_addr & ~0xfffULL;
2159 if (!attrs.secure) {
2160 par64 |= (1 << 9); /* NS */
2162 /* We don't set the ATTR or SH fields in the PAR. */
2165 par64 |= (fsr & 0x3f) << 1; /* FS */
2166 /* Note that S2WLK and FSTAGE are always zero, because we don't
2167 * implement virtualization and therefore there can't be a stage 2
2172 /* fsr is a DFSR/IFSR value for the short descriptor
2173 * translation table format (with WnR always clear).
2174 * Convert it to a 32-bit PAR.
2177 /* We do not set any attribute bits in the PAR */
2178 if (page_size == (1 << 24)
2179 && arm_feature(env, ARM_FEATURE_V7)) {
2180 par64 = (phys_addr & 0xff000000) | (1 << 1);
2182 par64 = phys_addr & 0xfffff000;
2184 if (!attrs.secure) {
2185 par64 |= (1 << 9); /* NS */
2188 par64 = ((fsr & (1 << 10)) >> 5) | ((fsr & (1 << 12)) >> 6) |
2189 ((fsr & 0xf) << 1) | 1;
2195 static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
2197 MMUAccessType access_type = ri->opc2 & 1 ? MMU_DATA_STORE : MMU_DATA_LOAD;
2200 int el = arm_current_el(env);
2201 bool secure = arm_is_secure_below_el3(env);
2203 switch (ri->opc2 & 6) {
2205 /* stage 1 current state PL1: ATS1CPR, ATS1CPW */
2208 mmu_idx = ARMMMUIdx_S1E3;
2211 mmu_idx = ARMMMUIdx_S1NSE1;
2214 mmu_idx = secure ? ARMMMUIdx_S1SE1 : ARMMMUIdx_S1NSE1;
2217 g_assert_not_reached();
2221 /* stage 1 current state PL0: ATS1CUR, ATS1CUW */
2224 mmu_idx = ARMMMUIdx_S1SE0;
2227 mmu_idx = ARMMMUIdx_S1NSE0;
2230 mmu_idx = secure ? ARMMMUIdx_S1SE0 : ARMMMUIdx_S1NSE0;
2233 g_assert_not_reached();
2237 /* stage 1+2 NonSecure PL1: ATS12NSOPR, ATS12NSOPW */
2238 mmu_idx = ARMMMUIdx_S12NSE1;
2241 /* stage 1+2 NonSecure PL0: ATS12NSOUR, ATS12NSOUW */
2242 mmu_idx = ARMMMUIdx_S12NSE0;
2245 g_assert_not_reached();
2248 par64 = do_ats_write(env, value, access_type, mmu_idx);
2250 A32_BANKED_CURRENT_REG_SET(env, par, par64);
2253 static void ats1h_write(CPUARMState *env, const ARMCPRegInfo *ri,
2256 MMUAccessType access_type = ri->opc2 & 1 ? MMU_DATA_STORE : MMU_DATA_LOAD;
2259 par64 = do_ats_write(env, value, access_type, ARMMMUIdx_S2NS);
2261 A32_BANKED_CURRENT_REG_SET(env, par, par64);
2264 static CPAccessResult at_s1e2_access(CPUARMState *env, const ARMCPRegInfo *ri,
2267 if (arm_current_el(env) == 3 && !(env->cp15.scr_el3 & SCR_NS)) {
2268 return CP_ACCESS_TRAP;
2270 return CP_ACCESS_OK;
2273 static void ats_write64(CPUARMState *env, const ARMCPRegInfo *ri,
2276 MMUAccessType access_type = ri->opc2 & 1 ? MMU_DATA_STORE : MMU_DATA_LOAD;
2278 int secure = arm_is_secure_below_el3(env);
2280 switch (ri->opc2 & 6) {
2283 case 0: /* AT S1E1R, AT S1E1W */
2284 mmu_idx = secure ? ARMMMUIdx_S1SE1 : ARMMMUIdx_S1NSE1;
2286 case 4: /* AT S1E2R, AT S1E2W */
2287 mmu_idx = ARMMMUIdx_S1E2;
2289 case 6: /* AT S1E3R, AT S1E3W */
2290 mmu_idx = ARMMMUIdx_S1E3;
2293 g_assert_not_reached();
2296 case 2: /* AT S1E0R, AT S1E0W */
2297 mmu_idx = secure ? ARMMMUIdx_S1SE0 : ARMMMUIdx_S1NSE0;
2299 case 4: /* AT S12E1R, AT S12E1W */
2300 mmu_idx = secure ? ARMMMUIdx_S1SE1 : ARMMMUIdx_S12NSE1;
2302 case 6: /* AT S12E0R, AT S12E0W */
2303 mmu_idx = secure ? ARMMMUIdx_S1SE0 : ARMMMUIdx_S12NSE0;
2306 g_assert_not_reached();
2309 env->cp15.par_el[1] = do_ats_write(env, value, access_type, mmu_idx);
2313 static const ARMCPRegInfo vapa_cp_reginfo[] = {
2314 { .name = "PAR", .cp = 15, .crn = 7, .crm = 4, .opc1 = 0, .opc2 = 0,
2315 .access = PL1_RW, .resetvalue = 0,
2316 .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.par_s),
2317 offsetoflow32(CPUARMState, cp15.par_ns) },
2318 .writefn = par_write },
2319 #ifndef CONFIG_USER_ONLY
2320 /* This underdecoding is safe because the reginfo is NO_RAW. */
2321 { .name = "ATS", .cp = 15, .crn = 7, .crm = 8, .opc1 = 0, .opc2 = CP_ANY,
2322 .access = PL1_W, .accessfn = ats_access,
2323 .writefn = ats_write, .type = ARM_CP_NO_RAW },
2328 /* Return basic MPU access permission bits. */
2329 static uint32_t simple_mpu_ap_bits(uint32_t val)
2336 for (i = 0; i < 16; i += 2) {
2337 ret |= (val >> i) & mask;
2343 /* Pad basic MPU access permission bits to extended format. */
2344 static uint32_t extended_mpu_ap_bits(uint32_t val)
2351 for (i = 0; i < 16; i += 2) {
2352 ret |= (val & mask) << i;
2358 static void pmsav5_data_ap_write(CPUARMState *env, const ARMCPRegInfo *ri,
2361 env->cp15.pmsav5_data_ap = extended_mpu_ap_bits(value);
2364 static uint64_t pmsav5_data_ap_read(CPUARMState *env, const ARMCPRegInfo *ri)
2366 return simple_mpu_ap_bits(env->cp15.pmsav5_data_ap);
2369 static void pmsav5_insn_ap_write(CPUARMState *env, const ARMCPRegInfo *ri,
2372 env->cp15.pmsav5_insn_ap = extended_mpu_ap_bits(value);
2375 static uint64_t pmsav5_insn_ap_read(CPUARMState *env, const ARMCPRegInfo *ri)
2377 return simple_mpu_ap_bits(env->cp15.pmsav5_insn_ap);
2380 static uint64_t pmsav7_read(CPUARMState *env, const ARMCPRegInfo *ri)
2382 uint32_t *u32p = *(uint32_t **)raw_ptr(env, ri);
2388 u32p += env->pmsav7.rnr;
2392 static void pmsav7_write(CPUARMState *env, const ARMCPRegInfo *ri,
2395 ARMCPU *cpu = arm_env_get_cpu(env);
2396 uint32_t *u32p = *(uint32_t **)raw_ptr(env, ri);
2402 u32p += env->pmsav7.rnr;
2403 tlb_flush(CPU(cpu)); /* Mappings may have changed - purge! */
2407 static void pmsav7_rgnr_write(CPUARMState *env, const ARMCPRegInfo *ri,
2410 ARMCPU *cpu = arm_env_get_cpu(env);
2411 uint32_t nrgs = cpu->pmsav7_dregion;
2413 if (value >= nrgs) {
2414 qemu_log_mask(LOG_GUEST_ERROR,
2415 "PMSAv7 RGNR write >= # supported regions, %" PRIu32
2416 " > %" PRIu32 "\n", (uint32_t)value, nrgs);
2420 raw_write(env, ri, value);
2423 static const ARMCPRegInfo pmsav7_cp_reginfo[] = {
2424 /* Reset for all these registers is handled in arm_cpu_reset(),
2425 * because the PMSAv7 is also used by M-profile CPUs, which do
2426 * not register cpregs but still need the state to be reset.
2428 { .name = "DRBAR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 1, .opc2 = 0,
2429 .access = PL1_RW, .type = ARM_CP_NO_RAW,
2430 .fieldoffset = offsetof(CPUARMState, pmsav7.drbar),
2431 .readfn = pmsav7_read, .writefn = pmsav7_write,
2432 .resetfn = arm_cp_reset_ignore },
2433 { .name = "DRSR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 1, .opc2 = 2,
2434 .access = PL1_RW, .type = ARM_CP_NO_RAW,
2435 .fieldoffset = offsetof(CPUARMState, pmsav7.drsr),
2436 .readfn = pmsav7_read, .writefn = pmsav7_write,
2437 .resetfn = arm_cp_reset_ignore },
2438 { .name = "DRACR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 1, .opc2 = 4,
2439 .access = PL1_RW, .type = ARM_CP_NO_RAW,
2440 .fieldoffset = offsetof(CPUARMState, pmsav7.dracr),
2441 .readfn = pmsav7_read, .writefn = pmsav7_write,
2442 .resetfn = arm_cp_reset_ignore },
2443 { .name = "RGNR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 2, .opc2 = 0,
2445 .fieldoffset = offsetof(CPUARMState, pmsav7.rnr),
2446 .writefn = pmsav7_rgnr_write,
2447 .resetfn = arm_cp_reset_ignore },
2451 static const ARMCPRegInfo pmsav5_cp_reginfo[] = {
2452 { .name = "DATA_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 0,
2453 .access = PL1_RW, .type = ARM_CP_ALIAS,
2454 .fieldoffset = offsetof(CPUARMState, cp15.pmsav5_data_ap),
2455 .readfn = pmsav5_data_ap_read, .writefn = pmsav5_data_ap_write, },
2456 { .name = "INSN_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 1,
2457 .access = PL1_RW, .type = ARM_CP_ALIAS,
2458 .fieldoffset = offsetof(CPUARMState, cp15.pmsav5_insn_ap),
2459 .readfn = pmsav5_insn_ap_read, .writefn = pmsav5_insn_ap_write, },
2460 { .name = "DATA_EXT_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 2,
2462 .fieldoffset = offsetof(CPUARMState, cp15.pmsav5_data_ap),
2464 { .name = "INSN_EXT_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 3,
2466 .fieldoffset = offsetof(CPUARMState, cp15.pmsav5_insn_ap),
2468 { .name = "DCACHE_CFG", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 0,
2470 .fieldoffset = offsetof(CPUARMState, cp15.c2_data), .resetvalue = 0, },
2471 { .name = "ICACHE_CFG", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 1,
2473 .fieldoffset = offsetof(CPUARMState, cp15.c2_insn), .resetvalue = 0, },
2474 /* Protection region base and size registers */
2475 { .name = "946_PRBS0", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0,
2476 .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
2477 .fieldoffset = offsetof(CPUARMState, cp15.c6_region[0]) },
2478 { .name = "946_PRBS1", .cp = 15, .crn = 6, .crm = 1, .opc1 = 0,
2479 .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
2480 .fieldoffset = offsetof(CPUARMState, cp15.c6_region[1]) },
2481 { .name = "946_PRBS2", .cp = 15, .crn = 6, .crm = 2, .opc1 = 0,
2482 .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
2483 .fieldoffset = offsetof(CPUARMState, cp15.c6_region[2]) },
2484 { .name = "946_PRBS3", .cp = 15, .crn = 6, .crm = 3, .opc1 = 0,
2485 .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
2486 .fieldoffset = offsetof(CPUARMState, cp15.c6_region[3]) },
2487 { .name = "946_PRBS4", .cp = 15, .crn = 6, .crm = 4, .opc1 = 0,
2488 .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
2489 .fieldoffset = offsetof(CPUARMState, cp15.c6_region[4]) },
2490 { .name = "946_PRBS5", .cp = 15, .crn = 6, .crm = 5, .opc1 = 0,
2491 .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
2492 .fieldoffset = offsetof(CPUARMState, cp15.c6_region[5]) },
2493 { .name = "946_PRBS6", .cp = 15, .crn = 6, .crm = 6, .opc1 = 0,
2494 .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
2495 .fieldoffset = offsetof(CPUARMState, cp15.c6_region[6]) },
2496 { .name = "946_PRBS7", .cp = 15, .crn = 6, .crm = 7, .opc1 = 0,
2497 .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
2498 .fieldoffset = offsetof(CPUARMState, cp15.c6_region[7]) },
2502 static void vmsa_ttbcr_raw_write(CPUARMState *env, const ARMCPRegInfo *ri,
2505 TCR *tcr = raw_ptr(env, ri);
2506 int maskshift = extract32(value, 0, 3);
2508 if (!arm_feature(env, ARM_FEATURE_V8)) {
2509 if (arm_feature(env, ARM_FEATURE_LPAE) && (value & TTBCR_EAE)) {
2510 /* Pre ARMv8 bits [21:19], [15:14] and [6:3] are UNK/SBZP when
2511 * using Long-desciptor translation table format */
2512 value &= ~((7 << 19) | (3 << 14) | (0xf << 3));
2513 } else if (arm_feature(env, ARM_FEATURE_EL3)) {
2514 /* In an implementation that includes the Security Extensions
2515 * TTBCR has additional fields PD0 [4] and PD1 [5] for
2516 * Short-descriptor translation table format.
2518 value &= TTBCR_PD1 | TTBCR_PD0 | TTBCR_N;
2524 /* Update the masks corresponding to the TCR bank being written
2525 * Note that we always calculate mask and base_mask, but
2526 * they are only used for short-descriptor tables (ie if EAE is 0);
2527 * for long-descriptor tables the TCR fields are used differently
2528 * and the mask and base_mask values are meaningless.
2530 tcr->raw_tcr = value;
2531 tcr->mask = ~(((uint32_t)0xffffffffu) >> maskshift);
2532 tcr->base_mask = ~((uint32_t)0x3fffu >> maskshift);
2535 static void vmsa_ttbcr_write(CPUARMState *env, const ARMCPRegInfo *ri,
2538 ARMCPU *cpu = arm_env_get_cpu(env);
2540 if (arm_feature(env, ARM_FEATURE_LPAE)) {
2541 /* With LPAE the TTBCR could result in a change of ASID
2542 * via the TTBCR.A1 bit, so do a TLB flush.
2544 tlb_flush(CPU(cpu));
2546 vmsa_ttbcr_raw_write(env, ri, value);
2549 static void vmsa_ttbcr_reset(CPUARMState *env, const ARMCPRegInfo *ri)
2551 TCR *tcr = raw_ptr(env, ri);
2553 /* Reset both the TCR as well as the masks corresponding to the bank of
2554 * the TCR being reset.
2558 tcr->base_mask = 0xffffc000u;
2561 static void vmsa_tcr_el1_write(CPUARMState *env, const ARMCPRegInfo *ri,
2564 ARMCPU *cpu = arm_env_get_cpu(env);
2565 TCR *tcr = raw_ptr(env, ri);
2567 /* For AArch64 the A1 bit could result in a change of ASID, so TLB flush. */
2568 tlb_flush(CPU(cpu));
2569 tcr->raw_tcr = value;
2572 static void vmsa_ttbr_write(CPUARMState *env, const ARMCPRegInfo *ri,
2575 /* 64 bit accesses to the TTBRs can change the ASID and so we
2576 * must flush the TLB.
2578 if (cpreg_field_is_64bit(ri)) {
2579 ARMCPU *cpu = arm_env_get_cpu(env);
2581 tlb_flush(CPU(cpu));
2583 raw_write(env, ri, value);
2586 static void vttbr_write(CPUARMState *env, const ARMCPRegInfo *ri,
2589 ARMCPU *cpu = arm_env_get_cpu(env);
2590 CPUState *cs = CPU(cpu);
2592 /* Accesses to VTTBR may change the VMID so we must flush the TLB. */
2593 if (raw_read(env, ri) != value) {
2594 tlb_flush_by_mmuidx(cs,
2595 ARMMMUIdxBit_S12NSE1 |
2596 ARMMMUIdxBit_S12NSE0 |
2598 raw_write(env, ri, value);
2602 static const ARMCPRegInfo vmsa_pmsa_cp_reginfo[] = {
2603 { .name = "DFSR", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 0,
2604 .access = PL1_RW, .type = ARM_CP_ALIAS,
2605 .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.dfsr_s),
2606 offsetoflow32(CPUARMState, cp15.dfsr_ns) }, },
2607 { .name = "IFSR", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 1,
2608 .access = PL1_RW, .resetvalue = 0,
2609 .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.ifsr_s),
2610 offsetoflow32(CPUARMState, cp15.ifsr_ns) } },
2611 { .name = "DFAR", .cp = 15, .opc1 = 0, .crn = 6, .crm = 0, .opc2 = 0,
2612 .access = PL1_RW, .resetvalue = 0,
2613 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.dfar_s),
2614 offsetof(CPUARMState, cp15.dfar_ns) } },
2615 { .name = "FAR_EL1", .state = ARM_CP_STATE_AA64,
2616 .opc0 = 3, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 0,
2617 .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.far_el[1]),
2622 static const ARMCPRegInfo vmsa_cp_reginfo[] = {
2623 { .name = "ESR_EL1", .state = ARM_CP_STATE_AA64,
2624 .opc0 = 3, .crn = 5, .crm = 2, .opc1 = 0, .opc2 = 0,
2626 .fieldoffset = offsetof(CPUARMState, cp15.esr_el[1]), .resetvalue = 0, },
2627 { .name = "TTBR0_EL1", .state = ARM_CP_STATE_BOTH,
2628 .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 0,
2629 .access = PL1_RW, .writefn = vmsa_ttbr_write, .resetvalue = 0,
2630 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr0_s),
2631 offsetof(CPUARMState, cp15.ttbr0_ns) } },
2632 { .name = "TTBR1_EL1", .state = ARM_CP_STATE_BOTH,
2633 .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 1,
2634 .access = PL1_RW, .writefn = vmsa_ttbr_write, .resetvalue = 0,
2635 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr1_s),
2636 offsetof(CPUARMState, cp15.ttbr1_ns) } },
2637 { .name = "TCR_EL1", .state = ARM_CP_STATE_AA64,
2638 .opc0 = 3, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 2,
2639 .access = PL1_RW, .writefn = vmsa_tcr_el1_write,
2640 .resetfn = vmsa_ttbcr_reset, .raw_writefn = raw_write,
2641 .fieldoffset = offsetof(CPUARMState, cp15.tcr_el[1]) },
2642 { .name = "TTBCR", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 2,
2643 .access = PL1_RW, .type = ARM_CP_ALIAS, .writefn = vmsa_ttbcr_write,
2644 .raw_writefn = vmsa_ttbcr_raw_write,
2645 .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tcr_el[3]),
2646 offsetoflow32(CPUARMState, cp15.tcr_el[1])} },
2650 static void omap_ticonfig_write(CPUARMState *env, const ARMCPRegInfo *ri,
2653 env->cp15.c15_ticonfig = value & 0xe7;
2654 /* The OS_TYPE bit in this register changes the reported CPUID! */
2655 env->cp15.c0_cpuid = (value & (1 << 5)) ?
2656 ARM_CPUID_TI915T : ARM_CPUID_TI925T;
2659 static void omap_threadid_write(CPUARMState *env, const ARMCPRegInfo *ri,
2662 env->cp15.c15_threadid = value & 0xffff;
2665 static void omap_wfi_write(CPUARMState *env, const ARMCPRegInfo *ri,
2668 /* Wait-for-interrupt (deprecated) */
2669 cpu_interrupt(CPU(arm_env_get_cpu(env)), CPU_INTERRUPT_HALT);
2672 static void omap_cachemaint_write(CPUARMState *env, const ARMCPRegInfo *ri,
2675 /* On OMAP there are registers indicating the max/min index of dcache lines
2676 * containing a dirty line; cache flush operations have to reset these.
2678 env->cp15.c15_i_max = 0x000;
2679 env->cp15.c15_i_min = 0xff0;
2682 static const ARMCPRegInfo omap_cp_reginfo[] = {
2683 { .name = "DFSR", .cp = 15, .crn = 5, .crm = CP_ANY,
2684 .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_OVERRIDE,
2685 .fieldoffset = offsetoflow32(CPUARMState, cp15.esr_el[1]),
2687 { .name = "", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 0,
2688 .access = PL1_RW, .type = ARM_CP_NOP },
2689 { .name = "TICONFIG", .cp = 15, .crn = 15, .crm = 1, .opc1 = 0, .opc2 = 0,
2691 .fieldoffset = offsetof(CPUARMState, cp15.c15_ticonfig), .resetvalue = 0,
2692 .writefn = omap_ticonfig_write },
2693 { .name = "IMAX", .cp = 15, .crn = 15, .crm = 2, .opc1 = 0, .opc2 = 0,
2695 .fieldoffset = offsetof(CPUARMState, cp15.c15_i_max), .resetvalue = 0, },
2696 { .name = "IMIN", .cp = 15, .crn = 15, .crm = 3, .opc1 = 0, .opc2 = 0,
2697 .access = PL1_RW, .resetvalue = 0xff0,
2698 .fieldoffset = offsetof(CPUARMState, cp15.c15_i_min) },
2699 { .name = "THREADID", .cp = 15, .crn = 15, .crm = 4, .opc1 = 0, .opc2 = 0,
2701 .fieldoffset = offsetof(CPUARMState, cp15.c15_threadid), .resetvalue = 0,
2702 .writefn = omap_threadid_write },
2703 { .name = "TI925T_STATUS", .cp = 15, .crn = 15,
2704 .crm = 8, .opc1 = 0, .opc2 = 0, .access = PL1_RW,
2705 .type = ARM_CP_NO_RAW,
2706 .readfn = arm_cp_read_zero, .writefn = omap_wfi_write, },
2707 /* TODO: Peripheral port remap register:
2708 * On OMAP2 mcr p15, 0, rn, c15, c2, 4 sets up the interrupt controller
2709 * base address at $rn & ~0xfff and map size of 0x200 << ($rn & 0xfff),
2712 { .name = "OMAP_CACHEMAINT", .cp = 15, .crn = 7, .crm = CP_ANY,
2713 .opc1 = 0, .opc2 = CP_ANY, .access = PL1_W,
2714 .type = ARM_CP_OVERRIDE | ARM_CP_NO_RAW,
2715 .writefn = omap_cachemaint_write },
2716 { .name = "C9", .cp = 15, .crn = 9,
2717 .crm = CP_ANY, .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW,
2718 .type = ARM_CP_CONST | ARM_CP_OVERRIDE, .resetvalue = 0 },
2722 static void xscale_cpar_write(CPUARMState *env, const ARMCPRegInfo *ri,
2725 env->cp15.c15_cpar = value & 0x3fff;
2728 static const ARMCPRegInfo xscale_cp_reginfo[] = {
2729 { .name = "XSCALE_CPAR",
2730 .cp = 15, .crn = 15, .crm = 1, .opc1 = 0, .opc2 = 0, .access = PL1_RW,
2731 .fieldoffset = offsetof(CPUARMState, cp15.c15_cpar), .resetvalue = 0,
2732 .writefn = xscale_cpar_write, },
2733 { .name = "XSCALE_AUXCR",
2734 .cp = 15, .crn = 1, .crm = 0, .opc1 = 0, .opc2 = 1, .access = PL1_RW,
2735 .fieldoffset = offsetof(CPUARMState, cp15.c1_xscaleauxcr),
2737 /* XScale specific cache-lockdown: since we have no cache we NOP these
2738 * and hope the guest does not really rely on cache behaviour.
2740 { .name = "XSCALE_LOCK_ICACHE_LINE",
2741 .cp = 15, .opc1 = 0, .crn = 9, .crm = 1, .opc2 = 0,
2742 .access = PL1_W, .type = ARM_CP_NOP },
2743 { .name = "XSCALE_UNLOCK_ICACHE",
2744 .cp = 15, .opc1 = 0, .crn = 9, .crm = 1, .opc2 = 1,
2745 .access = PL1_W, .type = ARM_CP_NOP },
2746 { .name = "XSCALE_DCACHE_LOCK",
2747 .cp = 15, .opc1 = 0, .crn = 9, .crm = 2, .opc2 = 0,
2748 .access = PL1_RW, .type = ARM_CP_NOP },
2749 { .name = "XSCALE_UNLOCK_DCACHE",
2750 .cp = 15, .opc1 = 0, .crn = 9, .crm = 2, .opc2 = 1,
2751 .access = PL1_W, .type = ARM_CP_NOP },
2755 static const ARMCPRegInfo dummy_c15_cp_reginfo[] = {
2756 /* RAZ/WI the whole crn=15 space, when we don't have a more specific
2757 * implementation of this implementation-defined space.
2758 * Ideally this should eventually disappear in favour of actually
2759 * implementing the correct behaviour for all cores.
2761 { .name = "C15_IMPDEF", .cp = 15, .crn = 15,
2762 .crm = CP_ANY, .opc1 = CP_ANY, .opc2 = CP_ANY,
2764 .type = ARM_CP_CONST | ARM_CP_NO_RAW | ARM_CP_OVERRIDE,
2769 static const ARMCPRegInfo cache_dirty_status_cp_reginfo[] = {
2770 /* Cache status: RAZ because we have no cache so it's always clean */
2771 { .name = "CDSR", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 6,
2772 .access = PL1_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW,
2777 static const ARMCPRegInfo cache_block_ops_cp_reginfo[] = {
2778 /* We never have a a block transfer operation in progress */
2779 { .name = "BXSR", .cp = 15, .crn = 7, .crm = 12, .opc1 = 0, .opc2 = 4,
2780 .access = PL0_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW,
2782 /* The cache ops themselves: these all NOP for QEMU */
2783 { .name = "IICR", .cp = 15, .crm = 5, .opc1 = 0,
2784 .access = PL1_W, .type = ARM_CP_NOP|ARM_CP_64BIT },
2785 { .name = "IDCR", .cp = 15, .crm = 6, .opc1 = 0,
2786 .access = PL1_W, .type = ARM_CP_NOP|ARM_CP_64BIT },
2787 { .name = "CDCR", .cp = 15, .crm = 12, .opc1 = 0,
2788 .access = PL0_W, .type = ARM_CP_NOP|ARM_CP_64BIT },
2789 { .name = "PIR", .cp = 15, .crm = 12, .opc1 = 1,
2790 .access = PL0_W, .type = ARM_CP_NOP|ARM_CP_64BIT },
2791 { .name = "PDR", .cp = 15, .crm = 12, .opc1 = 2,
2792 .access = PL0_W, .type = ARM_CP_NOP|ARM_CP_64BIT },
2793 { .name = "CIDCR", .cp = 15, .crm = 14, .opc1 = 0,
2794 .access = PL1_W, .type = ARM_CP_NOP|ARM_CP_64BIT },
2798 static const ARMCPRegInfo cache_test_clean_cp_reginfo[] = {
2799 /* The cache test-and-clean instructions always return (1 << 30)
2800 * to indicate that there are no dirty cache lines.
2802 { .name = "TC_DCACHE", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 3,
2803 .access = PL0_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW,
2804 .resetvalue = (1 << 30) },
2805 { .name = "TCI_DCACHE", .cp = 15, .crn = 7, .crm = 14, .opc1 = 0, .opc2 = 3,
2806 .access = PL0_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW,
2807 .resetvalue = (1 << 30) },
2811 static const ARMCPRegInfo strongarm_cp_reginfo[] = {
2812 /* Ignore ReadBuffer accesses */
2813 { .name = "C9_READBUFFER", .cp = 15, .crn = 9,
2814 .crm = CP_ANY, .opc1 = CP_ANY, .opc2 = CP_ANY,
2815 .access = PL1_RW, .resetvalue = 0,
2816 .type = ARM_CP_CONST | ARM_CP_OVERRIDE | ARM_CP_NO_RAW },
2820 static uint64_t midr_read(CPUARMState *env, const ARMCPRegInfo *ri)
2822 ARMCPU *cpu = arm_env_get_cpu(env);
2823 unsigned int cur_el = arm_current_el(env);
2824 bool secure = arm_is_secure(env);
2826 if (arm_feature(&cpu->env, ARM_FEATURE_EL2) && !secure && cur_el == 1) {
2827 return env->cp15.vpidr_el2;
2829 return raw_read(env, ri);
2832 static uint64_t mpidr_read_val(CPUARMState *env)
2834 ARMCPU *cpu = ARM_CPU(arm_env_get_cpu(env));
2835 uint64_t mpidr = cpu->mp_affinity;
2837 if (arm_feature(env, ARM_FEATURE_V7MP)) {
2838 mpidr |= (1U << 31);
2839 /* Cores which are uniprocessor (non-coherent)
2840 * but still implement the MP extensions set
2841 * bit 30. (For instance, Cortex-R5).
2843 if (cpu->mp_is_up) {
2844 mpidr |= (1u << 30);
2850 static uint64_t mpidr_read(CPUARMState *env, const ARMCPRegInfo *ri)
2852 unsigned int cur_el = arm_current_el(env);
2853 bool secure = arm_is_secure(env);
2855 if (arm_feature(env, ARM_FEATURE_EL2) && !secure && cur_el == 1) {
2856 return env->cp15.vmpidr_el2;
2858 return mpidr_read_val(env);
2861 static const ARMCPRegInfo mpidr_cp_reginfo[] = {
2862 { .name = "MPIDR", .state = ARM_CP_STATE_BOTH,
2863 .opc0 = 3, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 5,
2864 .access = PL1_R, .readfn = mpidr_read, .type = ARM_CP_NO_RAW },
2868 static const ARMCPRegInfo lpae_cp_reginfo[] = {
2870 { .name = "AMAIR0", .state = ARM_CP_STATE_BOTH,
2871 .opc0 = 3, .crn = 10, .crm = 3, .opc1 = 0, .opc2 = 0,
2872 .access = PL1_RW, .type = ARM_CP_CONST,
2874 /* AMAIR1 is mapped to AMAIR_EL1[63:32] */
2875 { .name = "AMAIR1", .cp = 15, .crn = 10, .crm = 3, .opc1 = 0, .opc2 = 1,
2876 .access = PL1_RW, .type = ARM_CP_CONST,
2878 { .name = "PAR", .cp = 15, .crm = 7, .opc1 = 0,
2879 .access = PL1_RW, .type = ARM_CP_64BIT, .resetvalue = 0,
2880 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.par_s),
2881 offsetof(CPUARMState, cp15.par_ns)} },
2882 { .name = "TTBR0", .cp = 15, .crm = 2, .opc1 = 0,
2883 .access = PL1_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS,
2884 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr0_s),
2885 offsetof(CPUARMState, cp15.ttbr0_ns) },
2886 .writefn = vmsa_ttbr_write, },
2887 { .name = "TTBR1", .cp = 15, .crm = 2, .opc1 = 1,
2888 .access = PL1_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS,
2889 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr1_s),
2890 offsetof(CPUARMState, cp15.ttbr1_ns) },
2891 .writefn = vmsa_ttbr_write, },
2895 static uint64_t aa64_fpcr_read(CPUARMState *env, const ARMCPRegInfo *ri)
2897 return vfp_get_fpcr(env);
2900 static void aa64_fpcr_write(CPUARMState *env, const ARMCPRegInfo *ri,
2903 vfp_set_fpcr(env, value);
2906 static uint64_t aa64_fpsr_read(CPUARMState *env, const ARMCPRegInfo *ri)
2908 return vfp_get_fpsr(env);
2911 static void aa64_fpsr_write(CPUARMState *env, const ARMCPRegInfo *ri,
2914 vfp_set_fpsr(env, value);
2917 static CPAccessResult aa64_daif_access(CPUARMState *env, const ARMCPRegInfo *ri,
2920 if (arm_current_el(env) == 0 && !(env->cp15.sctlr_el[1] & SCTLR_UMA)) {
2921 return CP_ACCESS_TRAP;
2923 return CP_ACCESS_OK;
2926 static void aa64_daif_write(CPUARMState *env, const ARMCPRegInfo *ri,
2929 env->daif = value & PSTATE_DAIF;
2932 static CPAccessResult aa64_cacheop_access(CPUARMState *env,
2933 const ARMCPRegInfo *ri,
2936 /* Cache invalidate/clean: NOP, but EL0 must UNDEF unless
2937 * SCTLR_EL1.UCI is set.
2939 if (arm_current_el(env) == 0 && !(env->cp15.sctlr_el[1] & SCTLR_UCI)) {
2940 return CP_ACCESS_TRAP;
2942 return CP_ACCESS_OK;
2945 /* See: D4.7.2 TLB maintenance requirements and the TLB maintenance instructions
2946 * Page D4-1736 (DDI0487A.b)
2949 static void tlbi_aa64_vmalle1_write(CPUARMState *env, const ARMCPRegInfo *ri,
2952 CPUState *cs = ENV_GET_CPU(env);
2954 if (arm_is_secure_below_el3(env)) {
2955 tlb_flush_by_mmuidx(cs,
2956 ARMMMUIdxBit_S1SE1 |
2957 ARMMMUIdxBit_S1SE0);
2959 tlb_flush_by_mmuidx(cs,
2960 ARMMMUIdxBit_S12NSE1 |
2961 ARMMMUIdxBit_S12NSE0);
2965 static void tlbi_aa64_vmalle1is_write(CPUARMState *env, const ARMCPRegInfo *ri,
2968 CPUState *cs = ENV_GET_CPU(env);
2969 bool sec = arm_is_secure_below_el3(env);
2972 tlb_flush_by_mmuidx_all_cpus_synced(cs,
2973 ARMMMUIdxBit_S1SE1 |
2974 ARMMMUIdxBit_S1SE0);
2976 tlb_flush_by_mmuidx_all_cpus_synced(cs,
2977 ARMMMUIdxBit_S12NSE1 |
2978 ARMMMUIdxBit_S12NSE0);
2982 static void tlbi_aa64_alle1_write(CPUARMState *env, const ARMCPRegInfo *ri,
2985 /* Note that the 'ALL' scope must invalidate both stage 1 and
2986 * stage 2 translations, whereas most other scopes only invalidate
2987 * stage 1 translations.
2989 ARMCPU *cpu = arm_env_get_cpu(env);
2990 CPUState *cs = CPU(cpu);
2992 if (arm_is_secure_below_el3(env)) {
2993 tlb_flush_by_mmuidx(cs,
2994 ARMMMUIdxBit_S1SE1 |
2995 ARMMMUIdxBit_S1SE0);
2997 if (arm_feature(env, ARM_FEATURE_EL2)) {
2998 tlb_flush_by_mmuidx(cs,
2999 ARMMMUIdxBit_S12NSE1 |
3000 ARMMMUIdxBit_S12NSE0 |
3003 tlb_flush_by_mmuidx(cs,
3004 ARMMMUIdxBit_S12NSE1 |
3005 ARMMMUIdxBit_S12NSE0);
3010 static void tlbi_aa64_alle2_write(CPUARMState *env, const ARMCPRegInfo *ri,
3013 ARMCPU *cpu = arm_env_get_cpu(env);
3014 CPUState *cs = CPU(cpu);
3016 tlb_flush_by_mmuidx(cs, ARMMMUIdxBit_S1E2);
3019 static void tlbi_aa64_alle3_write(CPUARMState *env, const ARMCPRegInfo *ri,
3022 ARMCPU *cpu = arm_env_get_cpu(env);
3023 CPUState *cs = CPU(cpu);
3025 tlb_flush_by_mmuidx(cs, ARMMMUIdxBit_S1E3);
3028 static void tlbi_aa64_alle1is_write(CPUARMState *env, const ARMCPRegInfo *ri,
3031 /* Note that the 'ALL' scope must invalidate both stage 1 and
3032 * stage 2 translations, whereas most other scopes only invalidate
3033 * stage 1 translations.
3035 CPUState *cs = ENV_GET_CPU(env);
3036 bool sec = arm_is_secure_below_el3(env);
3037 bool has_el2 = arm_feature(env, ARM_FEATURE_EL2);
3040 tlb_flush_by_mmuidx_all_cpus_synced(cs,
3041 ARMMMUIdxBit_S1SE1 |
3042 ARMMMUIdxBit_S1SE0);
3043 } else if (has_el2) {
3044 tlb_flush_by_mmuidx_all_cpus_synced(cs,
3045 ARMMMUIdxBit_S12NSE1 |
3046 ARMMMUIdxBit_S12NSE0 |
3049 tlb_flush_by_mmuidx_all_cpus_synced(cs,
3050 ARMMMUIdxBit_S12NSE1 |
3051 ARMMMUIdxBit_S12NSE0);
3055 static void tlbi_aa64_alle2is_write(CPUARMState *env, const ARMCPRegInfo *ri,
3058 CPUState *cs = ENV_GET_CPU(env);
3060 tlb_flush_by_mmuidx_all_cpus_synced(cs, ARMMMUIdxBit_S1E2);
3063 static void tlbi_aa64_alle3is_write(CPUARMState *env, const ARMCPRegInfo *ri,
3066 CPUState *cs = ENV_GET_CPU(env);
3068 tlb_flush_by_mmuidx_all_cpus_synced(cs, ARMMMUIdxBit_S1E3);
3071 static void tlbi_aa64_vae1_write(CPUARMState *env, const ARMCPRegInfo *ri,
3074 /* Invalidate by VA, EL1&0 (AArch64 version).
3075 * Currently handles all of VAE1, VAAE1, VAALE1 and VALE1,
3076 * since we don't support flush-for-specific-ASID-only or
3077 * flush-last-level-only.
3079 ARMCPU *cpu = arm_env_get_cpu(env);
3080 CPUState *cs = CPU(cpu);
3081 uint64_t pageaddr = sextract64(value << 12, 0, 56);
3083 if (arm_is_secure_below_el3(env)) {
3084 tlb_flush_page_by_mmuidx(cs, pageaddr,
3085 ARMMMUIdxBit_S1SE1 |
3086 ARMMMUIdxBit_S1SE0);
3088 tlb_flush_page_by_mmuidx(cs, pageaddr,
3089 ARMMMUIdxBit_S12NSE1 |
3090 ARMMMUIdxBit_S12NSE0);
3094 static void tlbi_aa64_vae2_write(CPUARMState *env, const ARMCPRegInfo *ri,
3097 /* Invalidate by VA, EL2
3098 * Currently handles both VAE2 and VALE2, since we don't support
3099 * flush-last-level-only.
3101 ARMCPU *cpu = arm_env_get_cpu(env);
3102 CPUState *cs = CPU(cpu);
3103 uint64_t pageaddr = sextract64(value << 12, 0, 56);
3105 tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdxBit_S1E2);
3108 static void tlbi_aa64_vae3_write(CPUARMState *env, const ARMCPRegInfo *ri,
3111 /* Invalidate by VA, EL3
3112 * Currently handles both VAE3 and VALE3, since we don't support
3113 * flush-last-level-only.
3115 ARMCPU *cpu = arm_env_get_cpu(env);
3116 CPUState *cs = CPU(cpu);
3117 uint64_t pageaddr = sextract64(value << 12, 0, 56);
3119 tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdxBit_S1E3);
3122 static void tlbi_aa64_vae1is_write(CPUARMState *env, const ARMCPRegInfo *ri,
3125 ARMCPU *cpu = arm_env_get_cpu(env);
3126 CPUState *cs = CPU(cpu);
3127 bool sec = arm_is_secure_below_el3(env);
3128 uint64_t pageaddr = sextract64(value << 12, 0, 56);
3131 tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr,
3132 ARMMMUIdxBit_S1SE1 |
3133 ARMMMUIdxBit_S1SE0);
3135 tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr,
3136 ARMMMUIdxBit_S12NSE1 |
3137 ARMMMUIdxBit_S12NSE0);
3141 static void tlbi_aa64_vae2is_write(CPUARMState *env, const ARMCPRegInfo *ri,
3144 CPUState *cs = ENV_GET_CPU(env);
3145 uint64_t pageaddr = sextract64(value << 12, 0, 56);
3147 tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr,
3151 static void tlbi_aa64_vae3is_write(CPUARMState *env, const ARMCPRegInfo *ri,
3154 CPUState *cs = ENV_GET_CPU(env);
3155 uint64_t pageaddr = sextract64(value << 12, 0, 56);
3157 tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr,
3161 static void tlbi_aa64_ipas2e1_write(CPUARMState *env, const ARMCPRegInfo *ri,
3164 /* Invalidate by IPA. This has to invalidate any structures that
3165 * contain only stage 2 translation information, but does not need
3166 * to apply to structures that contain combined stage 1 and stage 2
3167 * translation information.
3168 * This must NOP if EL2 isn't implemented or SCR_EL3.NS is zero.
3170 ARMCPU *cpu = arm_env_get_cpu(env);
3171 CPUState *cs = CPU(cpu);
3174 if (!arm_feature(env, ARM_FEATURE_EL2) || !(env->cp15.scr_el3 & SCR_NS)) {
3178 pageaddr = sextract64(value << 12, 0, 48);
3180 tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdxBit_S2NS);
3183 static void tlbi_aa64_ipas2e1is_write(CPUARMState *env, const ARMCPRegInfo *ri,
3186 CPUState *cs = ENV_GET_CPU(env);
3189 if (!arm_feature(env, ARM_FEATURE_EL2) || !(env->cp15.scr_el3 & SCR_NS)) {
3193 pageaddr = sextract64(value << 12, 0, 48);
3195 tlb_flush_page_by_mmuidx_all_cpus_synced(cs, pageaddr,
3199 static CPAccessResult aa64_zva_access(CPUARMState *env, const ARMCPRegInfo *ri,
3202 /* We don't implement EL2, so the only control on DC ZVA is the
3203 * bit in the SCTLR which can prohibit access for EL0.
3205 if (arm_current_el(env) == 0 && !(env->cp15.sctlr_el[1] & SCTLR_DZE)) {
3206 return CP_ACCESS_TRAP;
3208 return CP_ACCESS_OK;
3211 static uint64_t aa64_dczid_read(CPUARMState *env, const ARMCPRegInfo *ri)
3213 ARMCPU *cpu = arm_env_get_cpu(env);
3214 int dzp_bit = 1 << 4;
3216 /* DZP indicates whether DC ZVA access is allowed */
3217 if (aa64_zva_access(env, NULL, false) == CP_ACCESS_OK) {
3220 return cpu->dcz_blocksize | dzp_bit;
3223 static CPAccessResult sp_el0_access(CPUARMState *env, const ARMCPRegInfo *ri,
3226 if (!(env->pstate & PSTATE_SP)) {
3227 /* Access to SP_EL0 is undefined if it's being used as
3228 * the stack pointer.
3230 return CP_ACCESS_TRAP_UNCATEGORIZED;
3232 return CP_ACCESS_OK;
3235 static uint64_t spsel_read(CPUARMState *env, const ARMCPRegInfo *ri)
3237 return env->pstate & PSTATE_SP;
3240 static void spsel_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t val)
3242 update_spsel(env, val);
3245 static void sctlr_write(CPUARMState *env, const ARMCPRegInfo *ri,
3248 ARMCPU *cpu = arm_env_get_cpu(env);
3250 if (raw_read(env, ri) == value) {
3251 /* Skip the TLB flush if nothing actually changed; Linux likes
3252 * to do a lot of pointless SCTLR writes.
3257 if (arm_feature(env, ARM_FEATURE_PMSA) && !cpu->has_mpu) {
3258 /* M bit is RAZ/WI for PMSA with no MPU implemented */
3262 raw_write(env, ri, value);
3263 /* ??? Lots of these bits are not implemented. */
3264 /* This may enable/disable the MMU, so do a TLB flush. */
3265 tlb_flush(CPU(cpu));
3268 static CPAccessResult fpexc32_access(CPUARMState *env, const ARMCPRegInfo *ri,
3271 if ((env->cp15.cptr_el[2] & CPTR_TFP) && arm_current_el(env) == 2) {
3272 return CP_ACCESS_TRAP_FP_EL2;
3274 if (env->cp15.cptr_el[3] & CPTR_TFP) {
3275 return CP_ACCESS_TRAP_FP_EL3;
3277 return CP_ACCESS_OK;
3280 static void sdcr_write(CPUARMState *env, const ARMCPRegInfo *ri,
3283 env->cp15.mdcr_el3 = value & SDCR_VALID_MASK;
3286 static const ARMCPRegInfo v8_cp_reginfo[] = {
3287 /* Minimal set of EL0-visible registers. This will need to be expanded
3288 * significantly for system emulation of AArch64 CPUs.
3290 { .name = "NZCV", .state = ARM_CP_STATE_AA64,
3291 .opc0 = 3, .opc1 = 3, .opc2 = 0, .crn = 4, .crm = 2,
3292 .access = PL0_RW, .type = ARM_CP_NZCV },
3293 { .name = "DAIF", .state = ARM_CP_STATE_AA64,
3294 .opc0 = 3, .opc1 = 3, .opc2 = 1, .crn = 4, .crm = 2,
3295 .type = ARM_CP_NO_RAW,
3296 .access = PL0_RW, .accessfn = aa64_daif_access,
3297 .fieldoffset = offsetof(CPUARMState, daif),
3298 .writefn = aa64_daif_write, .resetfn = arm_cp_reset_ignore },
3299 { .name = "FPCR", .state = ARM_CP_STATE_AA64,
3300 .opc0 = 3, .opc1 = 3, .opc2 = 0, .crn = 4, .crm = 4,
3301 .access = PL0_RW, .readfn = aa64_fpcr_read, .writefn = aa64_fpcr_write },
3302 { .name = "FPSR", .state = ARM_CP_STATE_AA64,
3303 .opc0 = 3, .opc1 = 3, .opc2 = 1, .crn = 4, .crm = 4,
3304 .access = PL0_RW, .readfn = aa64_fpsr_read, .writefn = aa64_fpsr_write },
3305 { .name = "DCZID_EL0", .state = ARM_CP_STATE_AA64,
3306 .opc0 = 3, .opc1 = 3, .opc2 = 7, .crn = 0, .crm = 0,
3307 .access = PL0_R, .type = ARM_CP_NO_RAW,
3308 .readfn = aa64_dczid_read },
3309 { .name = "DC_ZVA", .state = ARM_CP_STATE_AA64,
3310 .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 4, .opc2 = 1,
3311 .access = PL0_W, .type = ARM_CP_DC_ZVA,
3312 #ifndef CONFIG_USER_ONLY
3313 /* Avoid overhead of an access check that always passes in user-mode */
3314 .accessfn = aa64_zva_access,
3317 { .name = "CURRENTEL", .state = ARM_CP_STATE_AA64,
3318 .opc0 = 3, .opc1 = 0, .opc2 = 2, .crn = 4, .crm = 2,
3319 .access = PL1_R, .type = ARM_CP_CURRENTEL },
3320 /* Cache ops: all NOPs since we don't emulate caches */
3321 { .name = "IC_IALLUIS", .state = ARM_CP_STATE_AA64,
3322 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 1, .opc2 = 0,
3323 .access = PL1_W, .type = ARM_CP_NOP },
3324 { .name = "IC_IALLU", .state = ARM_CP_STATE_AA64,
3325 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 0,
3326 .access = PL1_W, .type = ARM_CP_NOP },
3327 { .name = "IC_IVAU", .state = ARM_CP_STATE_AA64,
3328 .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 5, .opc2 = 1,
3329 .access = PL0_W, .type = ARM_CP_NOP,
3330 .accessfn = aa64_cacheop_access },
3331 { .name = "DC_IVAC", .state = ARM_CP_STATE_AA64,
3332 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 1,
3333 .access = PL1_W, .type = ARM_CP_NOP },
3334 { .name = "DC_ISW", .state = ARM_CP_STATE_AA64,
3335 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 2,
3336 .access = PL1_W, .type = ARM_CP_NOP },
3337 { .name = "DC_CVAC", .state = ARM_CP_STATE_AA64,
3338 .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 10, .opc2 = 1,
3339 .access = PL0_W, .type = ARM_CP_NOP,
3340 .accessfn = aa64_cacheop_access },
3341 { .name = "DC_CSW", .state = ARM_CP_STATE_AA64,
3342 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 10, .opc2 = 2,
3343 .access = PL1_W, .type = ARM_CP_NOP },
3344 { .name = "DC_CVAU", .state = ARM_CP_STATE_AA64,
3345 .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 11, .opc2 = 1,
3346 .access = PL0_W, .type = ARM_CP_NOP,
3347 .accessfn = aa64_cacheop_access },
3348 { .name = "DC_CIVAC", .state = ARM_CP_STATE_AA64,
3349 .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 14, .opc2 = 1,
3350 .access = PL0_W, .type = ARM_CP_NOP,
3351 .accessfn = aa64_cacheop_access },
3352 { .name = "DC_CISW", .state = ARM_CP_STATE_AA64,
3353 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 2,
3354 .access = PL1_W, .type = ARM_CP_NOP },
3355 /* TLBI operations */
3356 { .name = "TLBI_VMALLE1IS", .state = ARM_CP_STATE_AA64,
3357 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 0,
3358 .access = PL1_W, .type = ARM_CP_NO_RAW,
3359 .writefn = tlbi_aa64_vmalle1is_write },
3360 { .name = "TLBI_VAE1IS", .state = ARM_CP_STATE_AA64,
3361 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 1,
3362 .access = PL1_W, .type = ARM_CP_NO_RAW,
3363 .writefn = tlbi_aa64_vae1is_write },
3364 { .name = "TLBI_ASIDE1IS", .state = ARM_CP_STATE_AA64,
3365 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 2,
3366 .access = PL1_W, .type = ARM_CP_NO_RAW,
3367 .writefn = tlbi_aa64_vmalle1is_write },
3368 { .name = "TLBI_VAAE1IS", .state = ARM_CP_STATE_AA64,
3369 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 3,
3370 .access = PL1_W, .type = ARM_CP_NO_RAW,
3371 .writefn = tlbi_aa64_vae1is_write },
3372 { .name = "TLBI_VALE1IS", .state = ARM_CP_STATE_AA64,
3373 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 5,
3374 .access = PL1_W, .type = ARM_CP_NO_RAW,
3375 .writefn = tlbi_aa64_vae1is_write },
3376 { .name = "TLBI_VAALE1IS", .state = ARM_CP_STATE_AA64,
3377 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 7,
3378 .access = PL1_W, .type = ARM_CP_NO_RAW,
3379 .writefn = tlbi_aa64_vae1is_write },
3380 { .name = "TLBI_VMALLE1", .state = ARM_CP_STATE_AA64,
3381 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 0,
3382 .access = PL1_W, .type = ARM_CP_NO_RAW,
3383 .writefn = tlbi_aa64_vmalle1_write },
3384 { .name = "TLBI_VAE1", .state = ARM_CP_STATE_AA64,
3385 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 1,
3386 .access = PL1_W, .type = ARM_CP_NO_RAW,
3387 .writefn = tlbi_aa64_vae1_write },
3388 { .name = "TLBI_ASIDE1", .state = ARM_CP_STATE_AA64,
3389 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 2,
3390 .access = PL1_W, .type = ARM_CP_NO_RAW,
3391 .writefn = tlbi_aa64_vmalle1_write },
3392 { .name = "TLBI_VAAE1", .state = ARM_CP_STATE_AA64,
3393 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 3,
3394 .access = PL1_W, .type = ARM_CP_NO_RAW,
3395 .writefn = tlbi_aa64_vae1_write },
3396 { .name = "TLBI_VALE1", .state = ARM_CP_STATE_AA64,
3397 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 5,
3398 .access = PL1_W, .type = ARM_CP_NO_RAW,
3399 .writefn = tlbi_aa64_vae1_write },
3400 { .name = "TLBI_VAALE1", .state = ARM_CP_STATE_AA64,
3401 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 7,
3402 .access = PL1_W, .type = ARM_CP_NO_RAW,
3403 .writefn = tlbi_aa64_vae1_write },
3404 { .name = "TLBI_IPAS2E1IS", .state = ARM_CP_STATE_AA64,
3405 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 0, .opc2 = 1,
3406 .access = PL2_W, .type = ARM_CP_NO_RAW,
3407 .writefn = tlbi_aa64_ipas2e1is_write },
3408 { .name = "TLBI_IPAS2LE1IS", .state = ARM_CP_STATE_AA64,
3409 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 0, .opc2 = 5,
3410 .access = PL2_W, .type = ARM_CP_NO_RAW,
3411 .writefn = tlbi_aa64_ipas2e1is_write },
3412 { .name = "TLBI_ALLE1IS", .state = ARM_CP_STATE_AA64,
3413 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 4,
3414 .access = PL2_W, .type = ARM_CP_NO_RAW,
3415 .writefn = tlbi_aa64_alle1is_write },
3416 { .name = "TLBI_VMALLS12E1IS", .state = ARM_CP_STATE_AA64,
3417 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 6,
3418 .access = PL2_W, .type = ARM_CP_NO_RAW,
3419 .writefn = tlbi_aa64_alle1is_write },
3420 { .name = "TLBI_IPAS2E1", .state = ARM_CP_STATE_AA64,
3421 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 4, .opc2 = 1,
3422 .access = PL2_W, .type = ARM_CP_NO_RAW,
3423 .writefn = tlbi_aa64_ipas2e1_write },
3424 { .name = "TLBI_IPAS2LE1", .state = ARM_CP_STATE_AA64,
3425 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 4, .opc2 = 5,
3426 .access = PL2_W, .type = ARM_CP_NO_RAW,
3427 .writefn = tlbi_aa64_ipas2e1_write },
3428 { .name = "TLBI_ALLE1", .state = ARM_CP_STATE_AA64,
3429 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 4,
3430 .access = PL2_W, .type = ARM_CP_NO_RAW,
3431 .writefn = tlbi_aa64_alle1_write },
3432 { .name = "TLBI_VMALLS12E1", .state = ARM_CP_STATE_AA64,
3433 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 6,
3434 .access = PL2_W, .type = ARM_CP_NO_RAW,
3435 .writefn = tlbi_aa64_alle1is_write },
3436 #ifndef CONFIG_USER_ONLY
3437 /* 64 bit address translation operations */
3438 { .name = "AT_S1E1R", .state = ARM_CP_STATE_AA64,
3439 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 0,
3440 .access = PL1_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3441 { .name = "AT_S1E1W", .state = ARM_CP_STATE_AA64,
3442 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 1,
3443 .access = PL1_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3444 { .name = "AT_S1E0R", .state = ARM_CP_STATE_AA64,
3445 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 2,
3446 .access = PL1_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3447 { .name = "AT_S1E0W", .state = ARM_CP_STATE_AA64,
3448 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 3,
3449 .access = PL1_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3450 { .name = "AT_S12E1R", .state = ARM_CP_STATE_AA64,
3451 .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 4,
3452 .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3453 { .name = "AT_S12E1W", .state = ARM_CP_STATE_AA64,
3454 .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 5,
3455 .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3456 { .name = "AT_S12E0R", .state = ARM_CP_STATE_AA64,
3457 .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 6,
3458 .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3459 { .name = "AT_S12E0W", .state = ARM_CP_STATE_AA64,
3460 .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 7,
3461 .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3462 /* AT S1E2* are elsewhere as they UNDEF from EL3 if EL2 is not present */
3463 { .name = "AT_S1E3R", .state = ARM_CP_STATE_AA64,
3464 .opc0 = 1, .opc1 = 6, .crn = 7, .crm = 8, .opc2 = 0,
3465 .access = PL3_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3466 { .name = "AT_S1E3W", .state = ARM_CP_STATE_AA64,
3467 .opc0 = 1, .opc1 = 6, .crn = 7, .crm = 8, .opc2 = 1,
3468 .access = PL3_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3469 { .name = "PAR_EL1", .state = ARM_CP_STATE_AA64,
3470 .type = ARM_CP_ALIAS,
3471 .opc0 = 3, .opc1 = 0, .crn = 7, .crm = 4, .opc2 = 0,
3472 .access = PL1_RW, .resetvalue = 0,
3473 .fieldoffset = offsetof(CPUARMState, cp15.par_el[1]),
3474 .writefn = par_write },
3476 /* TLB invalidate last level of translation table walk */
3477 { .name = "TLBIMVALIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 5,
3478 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_is_write },
3479 { .name = "TLBIMVAALIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 7,
3480 .type = ARM_CP_NO_RAW, .access = PL1_W,
3481 .writefn = tlbimvaa_is_write },
3482 { .name = "TLBIMVAL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 5,
3483 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write },
3484 { .name = "TLBIMVAAL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 7,
3485 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimvaa_write },
3486 { .name = "TLBIMVALH", .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 5,
3487 .type = ARM_CP_NO_RAW, .access = PL2_W,
3488 .writefn = tlbimva_hyp_write },
3489 { .name = "TLBIMVALHIS",
3490 .cp = 15, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 5,
3491 .type = ARM_CP_NO_RAW, .access = PL2_W,
3492 .writefn = tlbimva_hyp_is_write },
3493 { .name = "TLBIIPAS2",
3494 .cp = 15, .opc1 = 4, .crn = 8, .crm = 4, .opc2 = 1,
3495 .type = ARM_CP_NO_RAW, .access = PL2_W,
3496 .writefn = tlbiipas2_write },
3497 { .name = "TLBIIPAS2IS",
3498 .cp = 15, .opc1 = 4, .crn = 8, .crm = 0, .opc2 = 1,
3499 .type = ARM_CP_NO_RAW, .access = PL2_W,
3500 .writefn = tlbiipas2_is_write },
3501 { .name = "TLBIIPAS2L",
3502 .cp = 15, .opc1 = 4, .crn = 8, .crm = 4, .opc2 = 5,
3503 .type = ARM_CP_NO_RAW, .access = PL2_W,
3504 .writefn = tlbiipas2_write },
3505 { .name = "TLBIIPAS2LIS",
3506 .cp = 15, .opc1 = 4, .crn = 8, .crm = 0, .opc2 = 5,
3507 .type = ARM_CP_NO_RAW, .access = PL2_W,
3508 .writefn = tlbiipas2_is_write },
3509 /* 32 bit cache operations */
3510 { .name = "ICIALLUIS", .cp = 15, .opc1 = 0, .crn = 7, .crm = 1, .opc2 = 0,
3511 .type = ARM_CP_NOP, .access = PL1_W },
3512 { .name = "BPIALLUIS", .cp = 15, .opc1 = 0, .crn = 7, .crm = 1, .opc2 = 6,
3513 .type = ARM_CP_NOP, .access = PL1_W },
3514 { .name = "ICIALLU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 0,
3515 .type = ARM_CP_NOP, .access = PL1_W },
3516 { .name = "ICIMVAU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 1,
3517 .type = ARM_CP_NOP, .access = PL1_W },
3518 { .name = "BPIALL", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 6,
3519 .type = ARM_CP_NOP, .access = PL1_W },
3520 { .name = "BPIMVA", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 7,
3521 .type = ARM_CP_NOP, .access = PL1_W },
3522 { .name = "DCIMVAC", .cp = 15, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 1,
3523 .type = ARM_CP_NOP, .access = PL1_W },
3524 { .name = "DCISW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 2,
3525 .type = ARM_CP_NOP, .access = PL1_W },
3526 { .name = "DCCMVAC", .cp = 15, .opc1 = 0, .crn = 7, .crm = 10, .opc2 = 1,
3527 .type = ARM_CP_NOP, .access = PL1_W },
3528 { .name = "DCCSW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 10, .opc2 = 2,
3529 .type = ARM_CP_NOP, .access = PL1_W },
3530 { .name = "DCCMVAU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 11, .opc2 = 1,
3531 .type = ARM_CP_NOP, .access = PL1_W },
3532 { .name = "DCCIMVAC", .cp = 15, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 1,
3533 .type = ARM_CP_NOP, .access = PL1_W },
3534 { .name = "DCCISW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 2,
3535 .type = ARM_CP_NOP, .access = PL1_W },
3536 /* MMU Domain access control / MPU write buffer control */
3537 { .name = "DACR", .cp = 15, .opc1 = 0, .crn = 3, .crm = 0, .opc2 = 0,
3538 .access = PL1_RW, .resetvalue = 0,
3539 .writefn = dacr_write, .raw_writefn = raw_write,
3540 .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.dacr_s),
3541 offsetoflow32(CPUARMState, cp15.dacr_ns) } },
3542 { .name = "ELR_EL1", .state = ARM_CP_STATE_AA64,
3543 .type = ARM_CP_ALIAS,
3544 .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 0, .opc2 = 1,
3546 .fieldoffset = offsetof(CPUARMState, elr_el[1]) },
3547 { .name = "SPSR_EL1", .state = ARM_CP_STATE_AA64,
3548 .type = ARM_CP_ALIAS,
3549 .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 0, .opc2 = 0,
3551 .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_SVC]) },
3552 /* We rely on the access checks not allowing the guest to write to the
3553 * state field when SPSel indicates that it's being used as the stack
3556 { .name = "SP_EL0", .state = ARM_CP_STATE_AA64,
3557 .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 1, .opc2 = 0,
3558 .access = PL1_RW, .accessfn = sp_el0_access,
3559 .type = ARM_CP_ALIAS,
3560 .fieldoffset = offsetof(CPUARMState, sp_el[0]) },
3561 { .name = "SP_EL1", .state = ARM_CP_STATE_AA64,
3562 .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 1, .opc2 = 0,
3563 .access = PL2_RW, .type = ARM_CP_ALIAS,
3564 .fieldoffset = offsetof(CPUARMState, sp_el[1]) },
3565 { .name = "SPSel", .state = ARM_CP_STATE_AA64,
3566 .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 2, .opc2 = 0,
3567 .type = ARM_CP_NO_RAW,
3568 .access = PL1_RW, .readfn = spsel_read, .writefn = spsel_write },
3569 { .name = "FPEXC32_EL2", .state = ARM_CP_STATE_AA64,
3570 .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 3, .opc2 = 0,
3571 .type = ARM_CP_ALIAS,
3572 .fieldoffset = offsetof(CPUARMState, vfp.xregs[ARM_VFP_FPEXC]),
3573 .access = PL2_RW, .accessfn = fpexc32_access },
3574 { .name = "DACR32_EL2", .state = ARM_CP_STATE_AA64,
3575 .opc0 = 3, .opc1 = 4, .crn = 3, .crm = 0, .opc2 = 0,
3576 .access = PL2_RW, .resetvalue = 0,
3577 .writefn = dacr_write, .raw_writefn = raw_write,
3578 .fieldoffset = offsetof(CPUARMState, cp15.dacr32_el2) },
3579 { .name = "IFSR32_EL2", .state = ARM_CP_STATE_AA64,
3580 .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 0, .opc2 = 1,
3581 .access = PL2_RW, .resetvalue = 0,
3582 .fieldoffset = offsetof(CPUARMState, cp15.ifsr32_el2) },
3583 { .name = "SPSR_IRQ", .state = ARM_CP_STATE_AA64,
3584 .type = ARM_CP_ALIAS,
3585 .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 3, .opc2 = 0,
3587 .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_IRQ]) },
3588 { .name = "SPSR_ABT", .state = ARM_CP_STATE_AA64,
3589 .type = ARM_CP_ALIAS,
3590 .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 3, .opc2 = 1,
3592 .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_ABT]) },
3593 { .name = "SPSR_UND", .state = ARM_CP_STATE_AA64,
3594 .type = ARM_CP_ALIAS,
3595 .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 3, .opc2 = 2,
3597 .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_UND]) },
3598 { .name = "SPSR_FIQ", .state = ARM_CP_STATE_AA64,
3599 .type = ARM_CP_ALIAS,
3600 .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 3, .opc2 = 3,
3602 .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_FIQ]) },
3603 { .name = "MDCR_EL3", .state = ARM_CP_STATE_AA64,
3604 .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 3, .opc2 = 1,
3606 .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.mdcr_el3) },
3607 { .name = "SDCR", .type = ARM_CP_ALIAS,
3608 .cp = 15, .opc1 = 0, .crn = 1, .crm = 3, .opc2 = 1,
3609 .access = PL1_RW, .accessfn = access_trap_aa32s_el1,
3610 .writefn = sdcr_write,
3611 .fieldoffset = offsetoflow32(CPUARMState, cp15.mdcr_el3) },
3615 /* Used to describe the behaviour of EL2 regs when EL2 does not exist. */
3616 static const ARMCPRegInfo el3_no_el2_cp_reginfo[] = {
3617 { .name = "VBAR_EL2", .state = ARM_CP_STATE_AA64,
3618 .opc0 = 3, .opc1 = 4, .crn = 12, .crm = 0, .opc2 = 0,
3620 .readfn = arm_cp_read_zero, .writefn = arm_cp_write_ignore },
3621 { .name = "HCR_EL2", .state = ARM_CP_STATE_AA64,
3622 .type = ARM_CP_NO_RAW,
3623 .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 0,
3625 .readfn = arm_cp_read_zero, .writefn = arm_cp_write_ignore },
3626 { .name = "CPTR_EL2", .state = ARM_CP_STATE_BOTH,
3627 .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 2,
3628 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3629 { .name = "MAIR_EL2", .state = ARM_CP_STATE_BOTH,
3630 .opc0 = 3, .opc1 = 4, .crn = 10, .crm = 2, .opc2 = 0,
3631 .access = PL2_RW, .type = ARM_CP_CONST,
3633 { .name = "HMAIR1", .state = ARM_CP_STATE_AA32,
3634 .opc1 = 4, .crn = 10, .crm = 2, .opc2 = 1,
3635 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3636 { .name = "AMAIR_EL2", .state = ARM_CP_STATE_BOTH,
3637 .opc0 = 3, .opc1 = 4, .crn = 10, .crm = 3, .opc2 = 0,
3638 .access = PL2_RW, .type = ARM_CP_CONST,
3640 { .name = "HMAIR1", .state = ARM_CP_STATE_AA32,
3641 .opc1 = 4, .crn = 10, .crm = 3, .opc2 = 1,
3642 .access = PL2_RW, .type = ARM_CP_CONST,
3644 { .name = "AFSR0_EL2", .state = ARM_CP_STATE_BOTH,
3645 .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 1, .opc2 = 0,
3646 .access = PL2_RW, .type = ARM_CP_CONST,
3648 { .name = "AFSR1_EL2", .state = ARM_CP_STATE_BOTH,
3649 .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 1, .opc2 = 1,
3650 .access = PL2_RW, .type = ARM_CP_CONST,
3652 { .name = "TCR_EL2", .state = ARM_CP_STATE_BOTH,
3653 .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 0, .opc2 = 2,
3654 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3655 { .name = "VTCR_EL2", .state = ARM_CP_STATE_BOTH,
3656 .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 2,
3657 .access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any,
3658 .type = ARM_CP_CONST, .resetvalue = 0 },
3659 { .name = "VTTBR", .state = ARM_CP_STATE_AA32,
3660 .cp = 15, .opc1 = 6, .crm = 2,
3661 .access = PL2_RW, .accessfn = access_el3_aa32ns,
3662 .type = ARM_CP_CONST | ARM_CP_64BIT, .resetvalue = 0 },
3663 { .name = "VTTBR_EL2", .state = ARM_CP_STATE_AA64,
3664 .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 0,
3665 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3666 { .name = "SCTLR_EL2", .state = ARM_CP_STATE_BOTH,
3667 .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 0, .opc2 = 0,
3668 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3669 { .name = "TPIDR_EL2", .state = ARM_CP_STATE_BOTH,
3670 .opc0 = 3, .opc1 = 4, .crn = 13, .crm = 0, .opc2 = 2,
3671 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3672 { .name = "TTBR0_EL2", .state = ARM_CP_STATE_AA64,
3673 .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 0, .opc2 = 0,
3674 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3675 { .name = "HTTBR", .cp = 15, .opc1 = 4, .crm = 2,
3676 .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_CONST,
3678 { .name = "CNTHCTL_EL2", .state = ARM_CP_STATE_BOTH,
3679 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 1, .opc2 = 0,
3680 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3681 { .name = "CNTVOFF_EL2", .state = ARM_CP_STATE_AA64,
3682 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 0, .opc2 = 3,
3683 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3684 { .name = "CNTVOFF", .cp = 15, .opc1 = 4, .crm = 14,
3685 .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_CONST,
3687 { .name = "CNTHP_CVAL_EL2", .state = ARM_CP_STATE_AA64,
3688 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 2,
3689 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3690 { .name = "CNTHP_CVAL", .cp = 15, .opc1 = 6, .crm = 14,
3691 .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_CONST,
3693 { .name = "CNTHP_TVAL_EL2", .state = ARM_CP_STATE_BOTH,
3694 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 0,
3695 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3696 { .name = "CNTHP_CTL_EL2", .state = ARM_CP_STATE_BOTH,
3697 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 1,
3698 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3699 { .name = "MDCR_EL2", .state = ARM_CP_STATE_BOTH,
3700 .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 1,
3701 .access = PL2_RW, .accessfn = access_tda,
3702 .type = ARM_CP_CONST, .resetvalue = 0 },
3703 { .name = "HPFAR_EL2", .state = ARM_CP_STATE_BOTH,
3704 .opc0 = 3, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 4,
3705 .access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any,
3706 .type = ARM_CP_CONST, .resetvalue = 0 },
3707 { .name = "HSTR_EL2", .state = ARM_CP_STATE_BOTH,
3708 .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 3,
3709 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3713 static void hcr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
3715 ARMCPU *cpu = arm_env_get_cpu(env);
3716 uint64_t valid_mask = HCR_MASK;
3718 if (arm_feature(env, ARM_FEATURE_EL3)) {
3719 valid_mask &= ~HCR_HCD;
3721 valid_mask &= ~HCR_TSC;
3724 /* Clear RES0 bits. */
3725 value &= valid_mask;
3727 /* These bits change the MMU setup:
3728 * HCR_VM enables stage 2 translation
3729 * HCR_PTW forbids certain page-table setups
3730 * HCR_DC Disables stage1 and enables stage2 translation
3732 if ((raw_read(env, ri) ^ value) & (HCR_VM | HCR_PTW | HCR_DC)) {
3733 tlb_flush(CPU(cpu));
3735 raw_write(env, ri, value);
3738 static const ARMCPRegInfo el2_cp_reginfo[] = {
3739 { .name = "HCR_EL2", .state = ARM_CP_STATE_AA64,
3740 .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 0,
3741 .access = PL2_RW, .fieldoffset = offsetof(CPUARMState, cp15.hcr_el2),
3742 .writefn = hcr_write },
3743 { .name = "ELR_EL2", .state = ARM_CP_STATE_AA64,
3744 .type = ARM_CP_ALIAS,
3745 .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 0, .opc2 = 1,
3747 .fieldoffset = offsetof(CPUARMState, elr_el[2]) },
3748 { .name = "ESR_EL2", .state = ARM_CP_STATE_AA64,
3749 .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 2, .opc2 = 0,
3750 .access = PL2_RW, .fieldoffset = offsetof(CPUARMState, cp15.esr_el[2]) },
3751 { .name = "FAR_EL2", .state = ARM_CP_STATE_AA64,
3752 .opc0 = 3, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 0,
3753 .access = PL2_RW, .fieldoffset = offsetof(CPUARMState, cp15.far_el[2]) },
3754 { .name = "SPSR_EL2", .state = ARM_CP_STATE_AA64,
3755 .type = ARM_CP_ALIAS,
3756 .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 0, .opc2 = 0,
3758 .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_HYP]) },
3759 { .name = "VBAR_EL2", .state = ARM_CP_STATE_AA64,
3760 .opc0 = 3, .opc1 = 4, .crn = 12, .crm = 0, .opc2 = 0,
3761 .access = PL2_RW, .writefn = vbar_write,
3762 .fieldoffset = offsetof(CPUARMState, cp15.vbar_el[2]),
3764 { .name = "SP_EL2", .state = ARM_CP_STATE_AA64,
3765 .opc0 = 3, .opc1 = 6, .crn = 4, .crm = 1, .opc2 = 0,
3766 .access = PL3_RW, .type = ARM_CP_ALIAS,
3767 .fieldoffset = offsetof(CPUARMState, sp_el[2]) },
3768 { .name = "CPTR_EL2", .state = ARM_CP_STATE_BOTH,
3769 .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 2,
3770 .access = PL2_RW, .accessfn = cptr_access, .resetvalue = 0,
3771 .fieldoffset = offsetof(CPUARMState, cp15.cptr_el[2]) },
3772 { .name = "MAIR_EL2", .state = ARM_CP_STATE_BOTH,
3773 .opc0 = 3, .opc1 = 4, .crn = 10, .crm = 2, .opc2 = 0,
3774 .access = PL2_RW, .fieldoffset = offsetof(CPUARMState, cp15.mair_el[2]),
3776 { .name = "HMAIR1", .state = ARM_CP_STATE_AA32,
3777 .opc1 = 4, .crn = 10, .crm = 2, .opc2 = 1,
3778 .access = PL2_RW, .type = ARM_CP_ALIAS,
3779 .fieldoffset = offsetofhigh32(CPUARMState, cp15.mair_el[2]) },
3780 { .name = "AMAIR_EL2", .state = ARM_CP_STATE_BOTH,
3781 .opc0 = 3, .opc1 = 4, .crn = 10, .crm = 3, .opc2 = 0,
3782 .access = PL2_RW, .type = ARM_CP_CONST,
3784 /* HAMAIR1 is mapped to AMAIR_EL2[63:32] */
3785 { .name = "HMAIR1", .state = ARM_CP_STATE_AA32,
3786 .opc1 = 4, .crn = 10, .crm = 3, .opc2 = 1,
3787 .access = PL2_RW, .type = ARM_CP_CONST,
3789 { .name = "AFSR0_EL2", .state = ARM_CP_STATE_BOTH,
3790 .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 1, .opc2 = 0,
3791 .access = PL2_RW, .type = ARM_CP_CONST,
3793 { .name = "AFSR1_EL2", .state = ARM_CP_STATE_BOTH,
3794 .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 1, .opc2 = 1,
3795 .access = PL2_RW, .type = ARM_CP_CONST,
3797 { .name = "TCR_EL2", .state = ARM_CP_STATE_BOTH,
3798 .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 0, .opc2 = 2,
3800 /* no .writefn needed as this can't cause an ASID change;
3801 * no .raw_writefn or .resetfn needed as we never use mask/base_mask
3803 .fieldoffset = offsetof(CPUARMState, cp15.tcr_el[2]) },
3804 { .name = "VTCR", .state = ARM_CP_STATE_AA32,
3805 .cp = 15, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 2,
3806 .type = ARM_CP_ALIAS,
3807 .access = PL2_RW, .accessfn = access_el3_aa32ns,
3808 .fieldoffset = offsetof(CPUARMState, cp15.vtcr_el2) },
3809 { .name = "VTCR_EL2", .state = ARM_CP_STATE_AA64,
3810 .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 2,
3812 /* no .writefn needed as this can't cause an ASID change;
3813 * no .raw_writefn or .resetfn needed as we never use mask/base_mask
3815 .fieldoffset = offsetof(CPUARMState, cp15.vtcr_el2) },
3816 { .name = "VTTBR", .state = ARM_CP_STATE_AA32,
3817 .cp = 15, .opc1 = 6, .crm = 2,
3818 .type = ARM_CP_64BIT | ARM_CP_ALIAS,
3819 .access = PL2_RW, .accessfn = access_el3_aa32ns,
3820 .fieldoffset = offsetof(CPUARMState, cp15.vttbr_el2),
3821 .writefn = vttbr_write },
3822 { .name = "VTTBR_EL2", .state = ARM_CP_STATE_AA64,
3823 .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 0,
3824 .access = PL2_RW, .writefn = vttbr_write,
3825 .fieldoffset = offsetof(CPUARMState, cp15.vttbr_el2) },
3826 { .name = "SCTLR_EL2", .state = ARM_CP_STATE_BOTH,
3827 .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 0, .opc2 = 0,
3828 .access = PL2_RW, .raw_writefn = raw_write, .writefn = sctlr_write,
3829 .fieldoffset = offsetof(CPUARMState, cp15.sctlr_el[2]) },
3830 { .name = "TPIDR_EL2", .state = ARM_CP_STATE_BOTH,
3831 .opc0 = 3, .opc1 = 4, .crn = 13, .crm = 0, .opc2 = 2,
3832 .access = PL2_RW, .resetvalue = 0,
3833 .fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[2]) },
3834 { .name = "TTBR0_EL2", .state = ARM_CP_STATE_AA64,
3835 .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 0, .opc2 = 0,
3836 .access = PL2_RW, .resetvalue = 0,
3837 .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[2]) },
3838 { .name = "HTTBR", .cp = 15, .opc1 = 4, .crm = 2,
3839 .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS,
3840 .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[2]) },
3841 { .name = "TLBIALLNSNH",
3842 .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 4,
3843 .type = ARM_CP_NO_RAW, .access = PL2_W,
3844 .writefn = tlbiall_nsnh_write },
3845 { .name = "TLBIALLNSNHIS",
3846 .cp = 15, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 4,
3847 .type = ARM_CP_NO_RAW, .access = PL2_W,
3848 .writefn = tlbiall_nsnh_is_write },
3849 { .name = "TLBIALLH", .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 0,
3850 .type = ARM_CP_NO_RAW, .access = PL2_W,
3851 .writefn = tlbiall_hyp_write },
3852 { .name = "TLBIALLHIS", .cp = 15, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 0,
3853 .type = ARM_CP_NO_RAW, .access = PL2_W,
3854 .writefn = tlbiall_hyp_is_write },
3855 { .name = "TLBIMVAH", .cp = 15, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 1,
3856 .type = ARM_CP_NO_RAW, .access = PL2_W,
3857 .writefn = tlbimva_hyp_write },
3858 { .name = "TLBIMVAHIS", .cp = 15, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 1,
3859 .type = ARM_CP_NO_RAW, .access = PL2_W,
3860 .writefn = tlbimva_hyp_is_write },
3861 { .name = "TLBI_ALLE2", .state = ARM_CP_STATE_AA64,
3862 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 0,
3863 .type = ARM_CP_NO_RAW, .access = PL2_W,
3864 .writefn = tlbi_aa64_alle2_write },
3865 { .name = "TLBI_VAE2", .state = ARM_CP_STATE_AA64,
3866 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 1,
3867 .type = ARM_CP_NO_RAW, .access = PL2_W,
3868 .writefn = tlbi_aa64_vae2_write },
3869 { .name = "TLBI_VALE2", .state = ARM_CP_STATE_AA64,
3870 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 5,
3871 .access = PL2_W, .type = ARM_CP_NO_RAW,
3872 .writefn = tlbi_aa64_vae2_write },
3873 { .name = "TLBI_ALLE2IS", .state = ARM_CP_STATE_AA64,
3874 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 0,
3875 .access = PL2_W, .type = ARM_CP_NO_RAW,
3876 .writefn = tlbi_aa64_alle2is_write },
3877 { .name = "TLBI_VAE2IS", .state = ARM_CP_STATE_AA64,
3878 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 1,
3879 .type = ARM_CP_NO_RAW, .access = PL2_W,
3880 .writefn = tlbi_aa64_vae2is_write },
3881 { .name = "TLBI_VALE2IS", .state = ARM_CP_STATE_AA64,
3882 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 5,
3883 .access = PL2_W, .type = ARM_CP_NO_RAW,
3884 .writefn = tlbi_aa64_vae2is_write },
3885 #ifndef CONFIG_USER_ONLY
3886 /* Unlike the other EL2-related AT operations, these must
3887 * UNDEF from EL3 if EL2 is not implemented, which is why we
3888 * define them here rather than with the rest of the AT ops.
3890 { .name = "AT_S1E2R", .state = ARM_CP_STATE_AA64,
3891 .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 0,
3892 .access = PL2_W, .accessfn = at_s1e2_access,
3893 .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3894 { .name = "AT_S1E2W", .state = ARM_CP_STATE_AA64,
3895 .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 1,
3896 .access = PL2_W, .accessfn = at_s1e2_access,
3897 .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3898 /* The AArch32 ATS1H* operations are CONSTRAINED UNPREDICTABLE
3899 * if EL2 is not implemented; we choose to UNDEF. Behaviour at EL3
3900 * with SCR.NS == 0 outside Monitor mode is UNPREDICTABLE; we choose
3901 * to behave as if SCR.NS was 1.
3903 { .name = "ATS1HR", .cp = 15, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 0,
3905 .writefn = ats1h_write, .type = ARM_CP_NO_RAW },
3906 { .name = "ATS1HW", .cp = 15, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 1,
3908 .writefn = ats1h_write, .type = ARM_CP_NO_RAW },
3909 { .name = "CNTHCTL_EL2", .state = ARM_CP_STATE_BOTH,
3910 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 1, .opc2 = 0,
3911 /* ARMv7 requires bit 0 and 1 to reset to 1. ARMv8 defines the
3912 * reset values as IMPDEF. We choose to reset to 3 to comply with
3913 * both ARMv7 and ARMv8.
3915 .access = PL2_RW, .resetvalue = 3,
3916 .fieldoffset = offsetof(CPUARMState, cp15.cnthctl_el2) },
3917 { .name = "CNTVOFF_EL2", .state = ARM_CP_STATE_AA64,
3918 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 0, .opc2 = 3,
3919 .access = PL2_RW, .type = ARM_CP_IO, .resetvalue = 0,
3920 .writefn = gt_cntvoff_write,
3921 .fieldoffset = offsetof(CPUARMState, cp15.cntvoff_el2) },
3922 { .name = "CNTVOFF", .cp = 15, .opc1 = 4, .crm = 14,
3923 .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS | ARM_CP_IO,
3924 .writefn = gt_cntvoff_write,
3925 .fieldoffset = offsetof(CPUARMState, cp15.cntvoff_el2) },
3926 { .name = "CNTHP_CVAL_EL2", .state = ARM_CP_STATE_AA64,
3927 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 2,
3928 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_HYP].cval),
3929 .type = ARM_CP_IO, .access = PL2_RW,
3930 .writefn = gt_hyp_cval_write, .raw_writefn = raw_write },
3931 { .name = "CNTHP_CVAL", .cp = 15, .opc1 = 6, .crm = 14,
3932 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_HYP].cval),
3933 .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_IO,
3934 .writefn = gt_hyp_cval_write, .raw_writefn = raw_write },
3935 { .name = "CNTHP_TVAL_EL2", .state = ARM_CP_STATE_BOTH,
3936 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 0,
3937 .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL2_RW,
3938 .resetfn = gt_hyp_timer_reset,
3939 .readfn = gt_hyp_tval_read, .writefn = gt_hyp_tval_write },
3940 { .name = "CNTHP_CTL_EL2", .state = ARM_CP_STATE_BOTH,
3942 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 1,
3944 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_HYP].ctl),
3946 .writefn = gt_hyp_ctl_write, .raw_writefn = raw_write },
3948 /* The only field of MDCR_EL2 that has a defined architectural reset value
3949 * is MDCR_EL2.HPMN which should reset to the value of PMCR_EL0.N; but we
3950 * don't impelment any PMU event counters, so using zero as a reset
3951 * value for MDCR_EL2 is okay
3953 { .name = "MDCR_EL2", .state = ARM_CP_STATE_BOTH,
3954 .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 1,
3955 .access = PL2_RW, .resetvalue = 0,
3956 .fieldoffset = offsetof(CPUARMState, cp15.mdcr_el2), },
3957 { .name = "HPFAR", .state = ARM_CP_STATE_AA32,
3958 .cp = 15, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 4,
3959 .access = PL2_RW, .accessfn = access_el3_aa32ns,
3960 .fieldoffset = offsetof(CPUARMState, cp15.hpfar_el2) },
3961 { .name = "HPFAR_EL2", .state = ARM_CP_STATE_AA64,
3962 .opc0 = 3, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 4,
3964 .fieldoffset = offsetof(CPUARMState, cp15.hpfar_el2) },
3965 { .name = "HSTR_EL2", .state = ARM_CP_STATE_BOTH,
3966 .cp = 15, .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 3,
3968 .fieldoffset = offsetof(CPUARMState, cp15.hstr_el2) },
3972 static CPAccessResult nsacr_access(CPUARMState *env, const ARMCPRegInfo *ri,
3975 /* The NSACR is RW at EL3, and RO for NS EL1 and NS EL2.
3976 * At Secure EL1 it traps to EL3.
3978 if (arm_current_el(env) == 3) {
3979 return CP_ACCESS_OK;
3981 if (arm_is_secure_below_el3(env)) {
3982 return CP_ACCESS_TRAP_EL3;
3984 /* Accesses from EL1 NS and EL2 NS are UNDEF for write but allow reads. */
3986 return CP_ACCESS_OK;
3988 return CP_ACCESS_TRAP_UNCATEGORIZED;
3991 static const ARMCPRegInfo el3_cp_reginfo[] = {
3992 { .name = "SCR_EL3", .state = ARM_CP_STATE_AA64,
3993 .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 1, .opc2 = 0,
3994 .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.scr_el3),
3995 .resetvalue = 0, .writefn = scr_write },
3996 { .name = "SCR", .type = ARM_CP_ALIAS,
3997 .cp = 15, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 0,
3998 .access = PL1_RW, .accessfn = access_trap_aa32s_el1,
3999 .fieldoffset = offsetoflow32(CPUARMState, cp15.scr_el3),
4000 .writefn = scr_write },
4001 { .name = "SDER32_EL3", .state = ARM_CP_STATE_AA64,
4002 .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 1, .opc2 = 1,
4003 .access = PL3_RW, .resetvalue = 0,
4004 .fieldoffset = offsetof(CPUARMState, cp15.sder) },
4006 .cp = 15, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 1,
4007 .access = PL3_RW, .resetvalue = 0,
4008 .fieldoffset = offsetoflow32(CPUARMState, cp15.sder) },
4009 { .name = "MVBAR", .cp = 15, .opc1 = 0, .crn = 12, .crm = 0, .opc2 = 1,
4010 .access = PL1_RW, .accessfn = access_trap_aa32s_el1,
4011 .writefn = vbar_write, .resetvalue = 0,
4012 .fieldoffset = offsetof(CPUARMState, cp15.mvbar) },
4013 { .name = "TTBR0_EL3", .state = ARM_CP_STATE_AA64,
4014 .opc0 = 3, .opc1 = 6, .crn = 2, .crm = 0, .opc2 = 0,
4015 .access = PL3_RW, .writefn = vmsa_ttbr_write, .resetvalue = 0,
4016 .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[3]) },
4017 { .name = "TCR_EL3", .state = ARM_CP_STATE_AA64,
4018 .opc0 = 3, .opc1 = 6, .crn = 2, .crm = 0, .opc2 = 2,
4020 /* no .writefn needed as this can't cause an ASID change;
4021 * we must provide a .raw_writefn and .resetfn because we handle
4022 * reset and migration for the AArch32 TTBCR(S), which might be
4023 * using mask and base_mask.
4025 .resetfn = vmsa_ttbcr_reset, .raw_writefn = vmsa_ttbcr_raw_write,
4026 .fieldoffset = offsetof(CPUARMState, cp15.tcr_el[3]) },
4027 { .name = "ELR_EL3", .state = ARM_CP_STATE_AA64,
4028 .type = ARM_CP_ALIAS,
4029 .opc0 = 3, .opc1 = 6, .crn = 4, .crm = 0, .opc2 = 1,
4031 .fieldoffset = offsetof(CPUARMState, elr_el[3]) },
4032 { .name = "ESR_EL3", .state = ARM_CP_STATE_AA64,
4033 .opc0 = 3, .opc1 = 6, .crn = 5, .crm = 2, .opc2 = 0,
4034 .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.esr_el[3]) },
4035 { .name = "FAR_EL3", .state = ARM_CP_STATE_AA64,
4036 .opc0 = 3, .opc1 = 6, .crn = 6, .crm = 0, .opc2 = 0,
4037 .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.far_el[3]) },
4038 { .name = "SPSR_EL3", .state = ARM_CP_STATE_AA64,
4039 .type = ARM_CP_ALIAS,
4040 .opc0 = 3, .opc1 = 6, .crn = 4, .crm = 0, .opc2 = 0,
4042 .fieldoffset = offsetof(CPUARMState, banked_spsr[BANK_MON]) },
4043 { .name = "VBAR_EL3", .state = ARM_CP_STATE_AA64,
4044 .opc0 = 3, .opc1 = 6, .crn = 12, .crm = 0, .opc2 = 0,
4045 .access = PL3_RW, .writefn = vbar_write,
4046 .fieldoffset = offsetof(CPUARMState, cp15.vbar_el[3]),
4048 { .name = "CPTR_EL3", .state = ARM_CP_STATE_AA64,
4049 .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 1, .opc2 = 2,
4050 .access = PL3_RW, .accessfn = cptr_access, .resetvalue = 0,
4051 .fieldoffset = offsetof(CPUARMState, cp15.cptr_el[3]) },
4052 { .name = "TPIDR_EL3", .state = ARM_CP_STATE_AA64,
4053 .opc0 = 3, .opc1 = 6, .crn = 13, .crm = 0, .opc2 = 2,
4054 .access = PL3_RW, .resetvalue = 0,
4055 .fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[3]) },
4056 { .name = "AMAIR_EL3", .state = ARM_CP_STATE_AA64,
4057 .opc0 = 3, .opc1 = 6, .crn = 10, .crm = 3, .opc2 = 0,
4058 .access = PL3_RW, .type = ARM_CP_CONST,
4060 { .name = "AFSR0_EL3", .state = ARM_CP_STATE_BOTH,
4061 .opc0 = 3, .opc1 = 6, .crn = 5, .crm = 1, .opc2 = 0,
4062 .access = PL3_RW, .type = ARM_CP_CONST,
4064 { .name = "AFSR1_EL3", .state = ARM_CP_STATE_BOTH,
4065 .opc0 = 3, .opc1 = 6, .crn = 5, .crm = 1, .opc2 = 1,
4066 .access = PL3_RW, .type = ARM_CP_CONST,
4068 { .name = "TLBI_ALLE3IS", .state = ARM_CP_STATE_AA64,
4069 .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 3, .opc2 = 0,
4070 .access = PL3_W, .type = ARM_CP_NO_RAW,
4071 .writefn = tlbi_aa64_alle3is_write },
4072 { .name = "TLBI_VAE3IS", .state = ARM_CP_STATE_AA64,
4073 .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 3, .opc2 = 1,
4074 .access = PL3_W, .type = ARM_CP_NO_RAW,
4075 .writefn = tlbi_aa64_vae3is_write },
4076 { .name = "TLBI_VALE3IS", .state = ARM_CP_STATE_AA64,
4077 .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 3, .opc2 = 5,
4078 .access = PL3_W, .type = ARM_CP_NO_RAW,
4079 .writefn = tlbi_aa64_vae3is_write },
4080 { .name = "TLBI_ALLE3", .state = ARM_CP_STATE_AA64,
4081 .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 7, .opc2 = 0,
4082 .access = PL3_W, .type = ARM_CP_NO_RAW,
4083 .writefn = tlbi_aa64_alle3_write },
4084 { .name = "TLBI_VAE3", .state = ARM_CP_STATE_AA64,
4085 .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 7, .opc2 = 1,
4086 .access = PL3_W, .type = ARM_CP_NO_RAW,
4087 .writefn = tlbi_aa64_vae3_write },
4088 { .name = "TLBI_VALE3", .state = ARM_CP_STATE_AA64,
4089 .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 7, .opc2 = 5,
4090 .access = PL3_W, .type = ARM_CP_NO_RAW,
4091 .writefn = tlbi_aa64_vae3_write },
4095 static CPAccessResult ctr_el0_access(CPUARMState *env, const ARMCPRegInfo *ri,
4098 /* Only accessible in EL0 if SCTLR.UCT is set (and only in AArch64,
4099 * but the AArch32 CTR has its own reginfo struct)
4101 if (arm_current_el(env) == 0 && !(env->cp15.sctlr_el[1] & SCTLR_UCT)) {
4102 return CP_ACCESS_TRAP;
4104 return CP_ACCESS_OK;
4107 static void oslar_write(CPUARMState *env, const ARMCPRegInfo *ri,
4110 /* Writes to OSLAR_EL1 may update the OS lock status, which can be
4111 * read via a bit in OSLSR_EL1.
4115 if (ri->state == ARM_CP_STATE_AA32) {
4116 oslock = (value == 0xC5ACCE55);
4121 env->cp15.oslsr_el1 = deposit32(env->cp15.oslsr_el1, 1, 1, oslock);
4124 static const ARMCPRegInfo debug_cp_reginfo[] = {
4125 /* DBGDRAR, DBGDSAR: always RAZ since we don't implement memory mapped
4126 * debug components. The AArch64 version of DBGDRAR is named MDRAR_EL1;
4127 * unlike DBGDRAR it is never accessible from EL0.
4128 * DBGDSAR is deprecated and must RAZ from v8 anyway, so it has no AArch64
4131 { .name = "DBGDRAR", .cp = 14, .crn = 1, .crm = 0, .opc1 = 0, .opc2 = 0,
4132 .access = PL0_R, .accessfn = access_tdra,
4133 .type = ARM_CP_CONST, .resetvalue = 0 },
4134 { .name = "MDRAR_EL1", .state = ARM_CP_STATE_AA64,
4135 .opc0 = 2, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 0,
4136 .access = PL1_R, .accessfn = access_tdra,
4137 .type = ARM_CP_CONST, .resetvalue = 0 },
4138 { .name = "DBGDSAR", .cp = 14, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 0,
4139 .access = PL0_R, .accessfn = access_tdra,
4140 .type = ARM_CP_CONST, .resetvalue = 0 },
4141 /* Monitor debug system control register; the 32-bit alias is DBGDSCRext. */
4142 { .name = "MDSCR_EL1", .state = ARM_CP_STATE_BOTH,
4143 .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 2,
4144 .access = PL1_RW, .accessfn = access_tda,
4145 .fieldoffset = offsetof(CPUARMState, cp15.mdscr_el1),
4147 /* MDCCSR_EL0, aka DBGDSCRint. This is a read-only mirror of MDSCR_EL1.
4148 * We don't implement the configurable EL0 access.
4150 { .name = "MDCCSR_EL0", .state = ARM_CP_STATE_BOTH,
4151 .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 0,
4152 .type = ARM_CP_ALIAS,
4153 .access = PL1_R, .accessfn = access_tda,
4154 .fieldoffset = offsetof(CPUARMState, cp15.mdscr_el1), },
4155 { .name = "OSLAR_EL1", .state = ARM_CP_STATE_BOTH,
4156 .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 4,
4157 .access = PL1_W, .type = ARM_CP_NO_RAW,
4158 .accessfn = access_tdosa,
4159 .writefn = oslar_write },
4160 { .name = "OSLSR_EL1", .state = ARM_CP_STATE_BOTH,
4161 .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 4,
4162 .access = PL1_R, .resetvalue = 10,
4163 .accessfn = access_tdosa,
4164 .fieldoffset = offsetof(CPUARMState, cp15.oslsr_el1) },
4165 /* Dummy OSDLR_EL1: 32-bit Linux will read this */
4166 { .name = "OSDLR_EL1", .state = ARM_CP_STATE_BOTH,
4167 .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 1, .crm = 3, .opc2 = 4,
4168 .access = PL1_RW, .accessfn = access_tdosa,
4169 .type = ARM_CP_NOP },
4170 /* Dummy DBGVCR: Linux wants to clear this on startup, but we don't
4171 * implement vector catch debug events yet.
4174 .cp = 14, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 0,
4175 .access = PL1_RW, .accessfn = access_tda,
4176 .type = ARM_CP_NOP },
4177 /* Dummy DBGVCR32_EL2 (which is only for a 64-bit hypervisor
4178 * to save and restore a 32-bit guest's DBGVCR)
4180 { .name = "DBGVCR32_EL2", .state = ARM_CP_STATE_AA64,
4181 .opc0 = 2, .opc1 = 4, .crn = 0, .crm = 7, .opc2 = 0,
4182 .access = PL2_RW, .accessfn = access_tda,
4183 .type = ARM_CP_NOP },
4184 /* Dummy MDCCINT_EL1, since we don't implement the Debug Communications
4185 * Channel but Linux may try to access this register. The 32-bit
4186 * alias is DBGDCCINT.
4188 { .name = "MDCCINT_EL1", .state = ARM_CP_STATE_BOTH,
4189 .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 0,
4190 .access = PL1_RW, .accessfn = access_tda,
4191 .type = ARM_CP_NOP },
4195 static const ARMCPRegInfo debug_lpae_cp_reginfo[] = {
4196 /* 64 bit access versions of the (dummy) debug registers */
4197 { .name = "DBGDRAR", .cp = 14, .crm = 1, .opc1 = 0,
4198 .access = PL0_R, .type = ARM_CP_CONST|ARM_CP_64BIT, .resetvalue = 0 },
4199 { .name = "DBGDSAR", .cp = 14, .crm = 2, .opc1 = 0,
4200 .access = PL0_R, .type = ARM_CP_CONST|ARM_CP_64BIT, .resetvalue = 0 },
4204 void hw_watchpoint_update(ARMCPU *cpu, int n)
4206 CPUARMState *env = &cpu->env;
4208 vaddr wvr = env->cp15.dbgwvr[n];
4209 uint64_t wcr = env->cp15.dbgwcr[n];
4211 int flags = BP_CPU | BP_STOP_BEFORE_ACCESS;
4213 if (env->cpu_watchpoint[n]) {
4214 cpu_watchpoint_remove_by_ref(CPU(cpu), env->cpu_watchpoint[n]);
4215 env->cpu_watchpoint[n] = NULL;
4218 if (!extract64(wcr, 0, 1)) {
4219 /* E bit clear : watchpoint disabled */
4223 switch (extract64(wcr, 3, 2)) {
4225 /* LSC 00 is reserved and must behave as if the wp is disabled */
4228 flags |= BP_MEM_READ;
4231 flags |= BP_MEM_WRITE;
4234 flags |= BP_MEM_ACCESS;
4238 /* Attempts to use both MASK and BAS fields simultaneously are
4239 * CONSTRAINED UNPREDICTABLE; we opt to ignore BAS in this case,
4240 * thus generating a watchpoint for every byte in the masked region.
4242 mask = extract64(wcr, 24, 4);
4243 if (mask == 1 || mask == 2) {
4244 /* Reserved values of MASK; we must act as if the mask value was
4245 * some non-reserved value, or as if the watchpoint were disabled.
4246 * We choose the latter.
4250 /* Watchpoint covers an aligned area up to 2GB in size */
4252 /* If masked bits in WVR are not zero it's CONSTRAINED UNPREDICTABLE
4253 * whether the watchpoint fires when the unmasked bits match; we opt
4254 * to generate the exceptions.
4258 /* Watchpoint covers bytes defined by the byte address select bits */
4259 int bas = extract64(wcr, 5, 8);
4263 /* This must act as if the watchpoint is disabled */
4267 if (extract64(wvr, 2, 1)) {
4268 /* Deprecated case of an only 4-aligned address. BAS[7:4] are
4269 * ignored, and BAS[3:0] define which bytes to watch.
4273 /* The BAS bits are supposed to be programmed to indicate a contiguous
4274 * range of bytes. Otherwise it is CONSTRAINED UNPREDICTABLE whether
4275 * we fire for each byte in the word/doubleword addressed by the WVR.
4276 * We choose to ignore any non-zero bits after the first range of 1s.
4278 basstart = ctz32(bas);
4279 len = cto32(bas >> basstart);
4283 cpu_watchpoint_insert(CPU(cpu), wvr, len, flags,
4284 &env->cpu_watchpoint[n]);
4287 void hw_watchpoint_update_all(ARMCPU *cpu)
4290 CPUARMState *env = &cpu->env;
4292 /* Completely clear out existing QEMU watchpoints and our array, to
4293 * avoid possible stale entries following migration load.
4295 cpu_watchpoint_remove_all(CPU(cpu), BP_CPU);
4296 memset(env->cpu_watchpoint, 0, sizeof(env->cpu_watchpoint));
4298 for (i = 0; i < ARRAY_SIZE(cpu->env.cpu_watchpoint); i++) {
4299 hw_watchpoint_update(cpu, i);
4303 static void dbgwvr_write(CPUARMState *env, const ARMCPRegInfo *ri,
4306 ARMCPU *cpu = arm_env_get_cpu(env);
4309 /* Bits [63:49] are hardwired to the value of bit [48]; that is, the
4310 * register reads and behaves as if values written are sign extended.
4311 * Bits [1:0] are RES0.
4313 value = sextract64(value, 0, 49) & ~3ULL;
4315 raw_write(env, ri, value);
4316 hw_watchpoint_update(cpu, i);
4319 static void dbgwcr_write(CPUARMState *env, const ARMCPRegInfo *ri,
4322 ARMCPU *cpu = arm_env_get_cpu(env);
4325 raw_write(env, ri, value);
4326 hw_watchpoint_update(cpu, i);
4329 void hw_breakpoint_update(ARMCPU *cpu, int n)
4331 CPUARMState *env = &cpu->env;
4332 uint64_t bvr = env->cp15.dbgbvr[n];
4333 uint64_t bcr = env->cp15.dbgbcr[n];
4338 if (env->cpu_breakpoint[n]) {
4339 cpu_breakpoint_remove_by_ref(CPU(cpu), env->cpu_breakpoint[n]);
4340 env->cpu_breakpoint[n] = NULL;
4343 if (!extract64(bcr, 0, 1)) {
4344 /* E bit clear : watchpoint disabled */
4348 bt = extract64(bcr, 20, 4);
4351 case 4: /* unlinked address mismatch (reserved if AArch64) */
4352 case 5: /* linked address mismatch (reserved if AArch64) */
4353 qemu_log_mask(LOG_UNIMP,
4354 "arm: address mismatch breakpoint types not implemented");
4356 case 0: /* unlinked address match */
4357 case 1: /* linked address match */
4359 /* Bits [63:49] are hardwired to the value of bit [48]; that is,
4360 * we behave as if the register was sign extended. Bits [1:0] are
4361 * RES0. The BAS field is used to allow setting breakpoints on 16
4362 * bit wide instructions; it is CONSTRAINED UNPREDICTABLE whether
4363 * a bp will fire if the addresses covered by the bp and the addresses
4364 * covered by the insn overlap but the insn doesn't start at the
4365 * start of the bp address range. We choose to require the insn and
4366 * the bp to have the same address. The constraints on writing to
4367 * BAS enforced in dbgbcr_write mean we have only four cases:
4368 * 0b0000 => no breakpoint
4369 * 0b0011 => breakpoint on addr
4370 * 0b1100 => breakpoint on addr + 2
4371 * 0b1111 => breakpoint on addr
4372 * See also figure D2-3 in the v8 ARM ARM (DDI0487A.c).
4374 int bas = extract64(bcr, 5, 4);
4375 addr = sextract64(bvr, 0, 49) & ~3ULL;
4384 case 2: /* unlinked context ID match */
4385 case 8: /* unlinked VMID match (reserved if no EL2) */
4386 case 10: /* unlinked context ID and VMID match (reserved if no EL2) */
4387 qemu_log_mask(LOG_UNIMP,
4388 "arm: unlinked context breakpoint types not implemented");
4390 case 9: /* linked VMID match (reserved if no EL2) */
4391 case 11: /* linked context ID and VMID match (reserved if no EL2) */
4392 case 3: /* linked context ID match */
4394 /* We must generate no events for Linked context matches (unless
4395 * they are linked to by some other bp/wp, which is handled in
4396 * updates for the linking bp/wp). We choose to also generate no events
4397 * for reserved values.
4402 cpu_breakpoint_insert(CPU(cpu), addr, flags, &env->cpu_breakpoint[n]);
4405 void hw_breakpoint_update_all(ARMCPU *cpu)
4408 CPUARMState *env = &cpu->env;
4410 /* Completely clear out existing QEMU breakpoints and our array, to
4411 * avoid possible stale entries following migration load.
4413 cpu_breakpoint_remove_all(CPU(cpu), BP_CPU);
4414 memset(env->cpu_breakpoint, 0, sizeof(env->cpu_breakpoint));
4416 for (i = 0; i < ARRAY_SIZE(cpu->env.cpu_breakpoint); i++) {
4417 hw_breakpoint_update(cpu, i);
4421 static void dbgbvr_write(CPUARMState *env, const ARMCPRegInfo *ri,
4424 ARMCPU *cpu = arm_env_get_cpu(env);
4427 raw_write(env, ri, value);
4428 hw_breakpoint_update(cpu, i);
4431 static void dbgbcr_write(CPUARMState *env, const ARMCPRegInfo *ri,
4434 ARMCPU *cpu = arm_env_get_cpu(env);
4437 /* BAS[3] is a read-only copy of BAS[2], and BAS[1] a read-only
4440 value = deposit64(value, 6, 1, extract64(value, 5, 1));
4441 value = deposit64(value, 8, 1, extract64(value, 7, 1));
4443 raw_write(env, ri, value);
4444 hw_breakpoint_update(cpu, i);
4447 static void define_debug_regs(ARMCPU *cpu)
4449 /* Define v7 and v8 architectural debug registers.
4450 * These are just dummy implementations for now.
4453 int wrps, brps, ctx_cmps;
4454 ARMCPRegInfo dbgdidr = {
4455 .name = "DBGDIDR", .cp = 14, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 0,
4456 .access = PL0_R, .accessfn = access_tda,
4457 .type = ARM_CP_CONST, .resetvalue = cpu->dbgdidr,
4460 /* Note that all these register fields hold "number of Xs minus 1". */
4461 brps = extract32(cpu->dbgdidr, 24, 4);
4462 wrps = extract32(cpu->dbgdidr, 28, 4);
4463 ctx_cmps = extract32(cpu->dbgdidr, 20, 4);
4465 assert(ctx_cmps <= brps);
4467 /* The DBGDIDR and ID_AA64DFR0_EL1 define various properties
4468 * of the debug registers such as number of breakpoints;
4469 * check that if they both exist then they agree.
4471 if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) {
4472 assert(extract32(cpu->id_aa64dfr0, 12, 4) == brps);
4473 assert(extract32(cpu->id_aa64dfr0, 20, 4) == wrps);
4474 assert(extract32(cpu->id_aa64dfr0, 28, 4) == ctx_cmps);
4477 define_one_arm_cp_reg(cpu, &dbgdidr);
4478 define_arm_cp_regs(cpu, debug_cp_reginfo);
4480 if (arm_feature(&cpu->env, ARM_FEATURE_LPAE)) {
4481 define_arm_cp_regs(cpu, debug_lpae_cp_reginfo);
4484 for (i = 0; i < brps + 1; i++) {
4485 ARMCPRegInfo dbgregs[] = {
4486 { .name = "DBGBVR", .state = ARM_CP_STATE_BOTH,
4487 .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 4,
4488 .access = PL1_RW, .accessfn = access_tda,
4489 .fieldoffset = offsetof(CPUARMState, cp15.dbgbvr[i]),
4490 .writefn = dbgbvr_write, .raw_writefn = raw_write
4492 { .name = "DBGBCR", .state = ARM_CP_STATE_BOTH,
4493 .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 5,
4494 .access = PL1_RW, .accessfn = access_tda,
4495 .fieldoffset = offsetof(CPUARMState, cp15.dbgbcr[i]),
4496 .writefn = dbgbcr_write, .raw_writefn = raw_write
4500 define_arm_cp_regs(cpu, dbgregs);
4503 for (i = 0; i < wrps + 1; i++) {
4504 ARMCPRegInfo dbgregs[] = {
4505 { .name = "DBGWVR", .state = ARM_CP_STATE_BOTH,
4506 .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 6,
4507 .access = PL1_RW, .accessfn = access_tda,
4508 .fieldoffset = offsetof(CPUARMState, cp15.dbgwvr[i]),
4509 .writefn = dbgwvr_write, .raw_writefn = raw_write
4511 { .name = "DBGWCR", .state = ARM_CP_STATE_BOTH,
4512 .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 7,
4513 .access = PL1_RW, .accessfn = access_tda,
4514 .fieldoffset = offsetof(CPUARMState, cp15.dbgwcr[i]),
4515 .writefn = dbgwcr_write, .raw_writefn = raw_write
4519 define_arm_cp_regs(cpu, dbgregs);
4523 void register_cp_regs_for_features(ARMCPU *cpu)
4525 /* Register all the coprocessor registers based on feature bits */
4526 CPUARMState *env = &cpu->env;
4527 if (arm_feature(env, ARM_FEATURE_M)) {
4528 /* M profile has no coprocessor registers */
4532 define_arm_cp_regs(cpu, cp_reginfo);
4533 if (!arm_feature(env, ARM_FEATURE_V8)) {
4534 /* Must go early as it is full of wildcards that may be
4535 * overridden by later definitions.
4537 define_arm_cp_regs(cpu, not_v8_cp_reginfo);
4540 if (arm_feature(env, ARM_FEATURE_V6)) {
4541 /* The ID registers all have impdef reset values */
4542 ARMCPRegInfo v6_idregs[] = {
4543 { .name = "ID_PFR0", .state = ARM_CP_STATE_BOTH,
4544 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 0,
4545 .access = PL1_R, .type = ARM_CP_CONST,
4546 .resetvalue = cpu->id_pfr0 },
4547 { .name = "ID_PFR1", .state = ARM_CP_STATE_BOTH,
4548 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 1,
4549 .access = PL1_R, .type = ARM_CP_CONST,
4550 .resetvalue = cpu->id_pfr1 },
4551 { .name = "ID_DFR0", .state = ARM_CP_STATE_BOTH,
4552 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 2,
4553 .access = PL1_R, .type = ARM_CP_CONST,
4554 .resetvalue = cpu->id_dfr0 },
4555 { .name = "ID_AFR0", .state = ARM_CP_STATE_BOTH,
4556 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 3,
4557 .access = PL1_R, .type = ARM_CP_CONST,
4558 .resetvalue = cpu->id_afr0 },
4559 { .name = "ID_MMFR0", .state = ARM_CP_STATE_BOTH,
4560 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 4,
4561 .access = PL1_R, .type = ARM_CP_CONST,
4562 .resetvalue = cpu->id_mmfr0 },
4563 { .name = "ID_MMFR1", .state = ARM_CP_STATE_BOTH,
4564 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 5,
4565 .access = PL1_R, .type = ARM_CP_CONST,
4566 .resetvalue = cpu->id_mmfr1 },
4567 { .name = "ID_MMFR2", .state = ARM_CP_STATE_BOTH,
4568 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 6,
4569 .access = PL1_R, .type = ARM_CP_CONST,
4570 .resetvalue = cpu->id_mmfr2 },
4571 { .name = "ID_MMFR3", .state = ARM_CP_STATE_BOTH,
4572 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 7,
4573 .access = PL1_R, .type = ARM_CP_CONST,
4574 .resetvalue = cpu->id_mmfr3 },
4575 { .name = "ID_ISAR0", .state = ARM_CP_STATE_BOTH,
4576 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 0,
4577 .access = PL1_R, .type = ARM_CP_CONST,
4578 .resetvalue = cpu->id_isar0 },
4579 { .name = "ID_ISAR1", .state = ARM_CP_STATE_BOTH,
4580 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 1,
4581 .access = PL1_R, .type = ARM_CP_CONST,
4582 .resetvalue = cpu->id_isar1 },
4583 { .name = "ID_ISAR2", .state = ARM_CP_STATE_BOTH,
4584 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 2,
4585 .access = PL1_R, .type = ARM_CP_CONST,
4586 .resetvalue = cpu->id_isar2 },
4587 { .name = "ID_ISAR3", .state = ARM_CP_STATE_BOTH,
4588 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 3,
4589 .access = PL1_R, .type = ARM_CP_CONST,
4590 .resetvalue = cpu->id_isar3 },
4591 { .name = "ID_ISAR4", .state = ARM_CP_STATE_BOTH,
4592 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 4,
4593 .access = PL1_R, .type = ARM_CP_CONST,
4594 .resetvalue = cpu->id_isar4 },
4595 { .name = "ID_ISAR5", .state = ARM_CP_STATE_BOTH,
4596 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 5,
4597 .access = PL1_R, .type = ARM_CP_CONST,
4598 .resetvalue = cpu->id_isar5 },
4599 { .name = "ID_MMFR4", .state = ARM_CP_STATE_BOTH,
4600 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 6,
4601 .access = PL1_R, .type = ARM_CP_CONST,
4602 .resetvalue = cpu->id_mmfr4 },
4603 /* 7 is as yet unallocated and must RAZ */
4604 { .name = "ID_ISAR7_RESERVED", .state = ARM_CP_STATE_BOTH,
4605 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 7,
4606 .access = PL1_R, .type = ARM_CP_CONST,
4610 define_arm_cp_regs(cpu, v6_idregs);
4611 define_arm_cp_regs(cpu, v6_cp_reginfo);
4613 define_arm_cp_regs(cpu, not_v6_cp_reginfo);
4615 if (arm_feature(env, ARM_FEATURE_V6K)) {
4616 define_arm_cp_regs(cpu, v6k_cp_reginfo);
4618 if (arm_feature(env, ARM_FEATURE_V7MP) &&
4619 !arm_feature(env, ARM_FEATURE_PMSA)) {
4620 define_arm_cp_regs(cpu, v7mp_cp_reginfo);
4622 if (arm_feature(env, ARM_FEATURE_V7)) {
4623 /* v7 performance monitor control register: same implementor
4624 * field as main ID register, and we implement only the cycle
4627 #ifndef CONFIG_USER_ONLY
4628 ARMCPRegInfo pmcr = {
4629 .name = "PMCR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 0,
4631 .type = ARM_CP_IO | ARM_CP_ALIAS,
4632 .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmcr),
4633 .accessfn = pmreg_access, .writefn = pmcr_write,
4634 .raw_writefn = raw_write,
4636 ARMCPRegInfo pmcr64 = {
4637 .name = "PMCR_EL0", .state = ARM_CP_STATE_AA64,
4638 .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 0,
4639 .access = PL0_RW, .accessfn = pmreg_access,
4641 .fieldoffset = offsetof(CPUARMState, cp15.c9_pmcr),
4642 .resetvalue = cpu->midr & 0xff000000,
4643 .writefn = pmcr_write, .raw_writefn = raw_write,
4645 define_one_arm_cp_reg(cpu, &pmcr);
4646 define_one_arm_cp_reg(cpu, &pmcr64);
4648 ARMCPRegInfo clidr = {
4649 .name = "CLIDR", .state = ARM_CP_STATE_BOTH,
4650 .opc0 = 3, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = 1,
4651 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = cpu->clidr
4653 define_one_arm_cp_reg(cpu, &clidr);
4654 define_arm_cp_regs(cpu, v7_cp_reginfo);
4655 define_debug_regs(cpu);
4657 define_arm_cp_regs(cpu, not_v7_cp_reginfo);
4659 if (arm_feature(env, ARM_FEATURE_V8)) {
4660 /* AArch64 ID registers, which all have impdef reset values.
4661 * Note that within the ID register ranges the unused slots
4662 * must all RAZ, not UNDEF; future architecture versions may
4663 * define new registers here.
4665 ARMCPRegInfo v8_idregs[] = {
4666 { .name = "ID_AA64PFR0_EL1", .state = ARM_CP_STATE_AA64,
4667 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 0,
4668 .access = PL1_R, .type = ARM_CP_CONST,
4669 .resetvalue = cpu->id_aa64pfr0 },
4670 { .name = "ID_AA64PFR1_EL1", .state = ARM_CP_STATE_AA64,
4671 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 1,
4672 .access = PL1_R, .type = ARM_CP_CONST,
4673 .resetvalue = cpu->id_aa64pfr1},
4674 { .name = "ID_AA64PFR2_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4675 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 2,
4676 .access = PL1_R, .type = ARM_CP_CONST,
4678 { .name = "ID_AA64PFR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4679 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 3,
4680 .access = PL1_R, .type = ARM_CP_CONST,
4682 { .name = "ID_AA64PFR4_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4683 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 4,
4684 .access = PL1_R, .type = ARM_CP_CONST,
4686 { .name = "ID_AA64PFR5_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4687 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 5,
4688 .access = PL1_R, .type = ARM_CP_CONST,
4690 { .name = "ID_AA64PFR6_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4691 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 6,
4692 .access = PL1_R, .type = ARM_CP_CONST,
4694 { .name = "ID_AA64PFR7_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4695 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 7,
4696 .access = PL1_R, .type = ARM_CP_CONST,
4698 { .name = "ID_AA64DFR0_EL1", .state = ARM_CP_STATE_AA64,
4699 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 0,
4700 .access = PL1_R, .type = ARM_CP_CONST,
4701 .resetvalue = cpu->id_aa64dfr0 },
4702 { .name = "ID_AA64DFR1_EL1", .state = ARM_CP_STATE_AA64,
4703 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 1,
4704 .access = PL1_R, .type = ARM_CP_CONST,
4705 .resetvalue = cpu->id_aa64dfr1 },
4706 { .name = "ID_AA64DFR2_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4707 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 2,
4708 .access = PL1_R, .type = ARM_CP_CONST,
4710 { .name = "ID_AA64DFR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4711 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 3,
4712 .access = PL1_R, .type = ARM_CP_CONST,
4714 { .name = "ID_AA64AFR0_EL1", .state = ARM_CP_STATE_AA64,
4715 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 4,
4716 .access = PL1_R, .type = ARM_CP_CONST,
4717 .resetvalue = cpu->id_aa64afr0 },
4718 { .name = "ID_AA64AFR1_EL1", .state = ARM_CP_STATE_AA64,
4719 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 5,
4720 .access = PL1_R, .type = ARM_CP_CONST,
4721 .resetvalue = cpu->id_aa64afr1 },
4722 { .name = "ID_AA64AFR2_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4723 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 6,
4724 .access = PL1_R, .type = ARM_CP_CONST,
4726 { .name = "ID_AA64AFR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4727 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 7,
4728 .access = PL1_R, .type = ARM_CP_CONST,
4730 { .name = "ID_AA64ISAR0_EL1", .state = ARM_CP_STATE_AA64,
4731 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 0,
4732 .access = PL1_R, .type = ARM_CP_CONST,
4733 .resetvalue = cpu->id_aa64isar0 },
4734 { .name = "ID_AA64ISAR1_EL1", .state = ARM_CP_STATE_AA64,
4735 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 1,
4736 .access = PL1_R, .type = ARM_CP_CONST,
4737 .resetvalue = cpu->id_aa64isar1 },
4738 { .name = "ID_AA64ISAR2_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4739 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 2,
4740 .access = PL1_R, .type = ARM_CP_CONST,
4742 { .name = "ID_AA64ISAR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4743 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 3,
4744 .access = PL1_R, .type = ARM_CP_CONST,
4746 { .name = "ID_AA64ISAR4_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4747 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 4,
4748 .access = PL1_R, .type = ARM_CP_CONST,
4750 { .name = "ID_AA64ISAR5_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4751 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 5,
4752 .access = PL1_R, .type = ARM_CP_CONST,
4754 { .name = "ID_AA64ISAR6_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4755 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 6,
4756 .access = PL1_R, .type = ARM_CP_CONST,
4758 { .name = "ID_AA64ISAR7_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4759 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 7,
4760 .access = PL1_R, .type = ARM_CP_CONST,
4762 { .name = "ID_AA64MMFR0_EL1", .state = ARM_CP_STATE_AA64,
4763 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 0,
4764 .access = PL1_R, .type = ARM_CP_CONST,
4765 .resetvalue = cpu->id_aa64mmfr0 },
4766 { .name = "ID_AA64MMFR1_EL1", .state = ARM_CP_STATE_AA64,
4767 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 1,
4768 .access = PL1_R, .type = ARM_CP_CONST,
4769 .resetvalue = cpu->id_aa64mmfr1 },
4770 { .name = "ID_AA64MMFR2_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4771 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 2,
4772 .access = PL1_R, .type = ARM_CP_CONST,
4774 { .name = "ID_AA64MMFR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4775 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 3,
4776 .access = PL1_R, .type = ARM_CP_CONST,
4778 { .name = "ID_AA64MMFR4_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4779 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 4,
4780 .access = PL1_R, .type = ARM_CP_CONST,
4782 { .name = "ID_AA64MMFR5_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4783 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 5,
4784 .access = PL1_R, .type = ARM_CP_CONST,
4786 { .name = "ID_AA64MMFR6_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4787 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 6,
4788 .access = PL1_R, .type = ARM_CP_CONST,
4790 { .name = "ID_AA64MMFR7_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4791 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 7,
4792 .access = PL1_R, .type = ARM_CP_CONST,
4794 { .name = "MVFR0_EL1", .state = ARM_CP_STATE_AA64,
4795 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 0,
4796 .access = PL1_R, .type = ARM_CP_CONST,
4797 .resetvalue = cpu->mvfr0 },
4798 { .name = "MVFR1_EL1", .state = ARM_CP_STATE_AA64,
4799 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 1,
4800 .access = PL1_R, .type = ARM_CP_CONST,
4801 .resetvalue = cpu->mvfr1 },
4802 { .name = "MVFR2_EL1", .state = ARM_CP_STATE_AA64,
4803 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 2,
4804 .access = PL1_R, .type = ARM_CP_CONST,
4805 .resetvalue = cpu->mvfr2 },
4806 { .name = "MVFR3_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4807 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 3,
4808 .access = PL1_R, .type = ARM_CP_CONST,
4810 { .name = "MVFR4_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4811 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 4,
4812 .access = PL1_R, .type = ARM_CP_CONST,
4814 { .name = "MVFR5_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4815 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 5,
4816 .access = PL1_R, .type = ARM_CP_CONST,
4818 { .name = "MVFR6_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4819 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 6,
4820 .access = PL1_R, .type = ARM_CP_CONST,
4822 { .name = "MVFR7_EL1_RESERVED", .state = ARM_CP_STATE_AA64,
4823 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 7,
4824 .access = PL1_R, .type = ARM_CP_CONST,
4826 { .name = "PMCEID0", .state = ARM_CP_STATE_AA32,
4827 .cp = 15, .opc1 = 0, .crn = 9, .crm = 12, .opc2 = 6,
4828 .access = PL0_R, .accessfn = pmreg_access, .type = ARM_CP_CONST,
4829 .resetvalue = cpu->pmceid0 },
4830 { .name = "PMCEID0_EL0", .state = ARM_CP_STATE_AA64,
4831 .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 6,
4832 .access = PL0_R, .accessfn = pmreg_access, .type = ARM_CP_CONST,
4833 .resetvalue = cpu->pmceid0 },
4834 { .name = "PMCEID1", .state = ARM_CP_STATE_AA32,
4835 .cp = 15, .opc1 = 0, .crn = 9, .crm = 12, .opc2 = 7,
4836 .access = PL0_R, .accessfn = pmreg_access, .type = ARM_CP_CONST,
4837 .resetvalue = cpu->pmceid1 },
4838 { .name = "PMCEID1_EL0", .state = ARM_CP_STATE_AA64,
4839 .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 7,
4840 .access = PL0_R, .accessfn = pmreg_access, .type = ARM_CP_CONST,
4841 .resetvalue = cpu->pmceid1 },
4844 /* RVBAR_EL1 is only implemented if EL1 is the highest EL */
4845 if (!arm_feature(env, ARM_FEATURE_EL3) &&
4846 !arm_feature(env, ARM_FEATURE_EL2)) {
4847 ARMCPRegInfo rvbar = {
4848 .name = "RVBAR_EL1", .state = ARM_CP_STATE_AA64,
4849 .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 0, .opc2 = 1,
4850 .type = ARM_CP_CONST, .access = PL1_R, .resetvalue = cpu->rvbar
4852 define_one_arm_cp_reg(cpu, &rvbar);
4854 define_arm_cp_regs(cpu, v8_idregs);
4855 define_arm_cp_regs(cpu, v8_cp_reginfo);
4857 if (arm_feature(env, ARM_FEATURE_EL2)) {
4858 uint64_t vmpidr_def = mpidr_read_val(env);
4859 ARMCPRegInfo vpidr_regs[] = {
4860 { .name = "VPIDR", .state = ARM_CP_STATE_AA32,
4861 .cp = 15, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 0,
4862 .access = PL2_RW, .accessfn = access_el3_aa32ns,
4863 .resetvalue = cpu->midr,
4864 .fieldoffset = offsetof(CPUARMState, cp15.vpidr_el2) },
4865 { .name = "VPIDR_EL2", .state = ARM_CP_STATE_AA64,
4866 .opc0 = 3, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 0,
4867 .access = PL2_RW, .resetvalue = cpu->midr,
4868 .fieldoffset = offsetof(CPUARMState, cp15.vpidr_el2) },
4869 { .name = "VMPIDR", .state = ARM_CP_STATE_AA32,
4870 .cp = 15, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 5,
4871 .access = PL2_RW, .accessfn = access_el3_aa32ns,
4872 .resetvalue = vmpidr_def,
4873 .fieldoffset = offsetof(CPUARMState, cp15.vmpidr_el2) },
4874 { .name = "VMPIDR_EL2", .state = ARM_CP_STATE_AA64,
4875 .opc0 = 3, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 5,
4877 .resetvalue = vmpidr_def,
4878 .fieldoffset = offsetof(CPUARMState, cp15.vmpidr_el2) },
4881 define_arm_cp_regs(cpu, vpidr_regs);
4882 define_arm_cp_regs(cpu, el2_cp_reginfo);
4883 /* RVBAR_EL2 is only implemented if EL2 is the highest EL */
4884 if (!arm_feature(env, ARM_FEATURE_EL3)) {
4885 ARMCPRegInfo rvbar = {
4886 .name = "RVBAR_EL2", .state = ARM_CP_STATE_AA64,
4887 .opc0 = 3, .opc1 = 4, .crn = 12, .crm = 0, .opc2 = 1,
4888 .type = ARM_CP_CONST, .access = PL2_R, .resetvalue = cpu->rvbar
4890 define_one_arm_cp_reg(cpu, &rvbar);
4893 /* If EL2 is missing but higher ELs are enabled, we need to
4894 * register the no_el2 reginfos.
4896 if (arm_feature(env, ARM_FEATURE_EL3)) {
4897 /* When EL3 exists but not EL2, VPIDR and VMPIDR take the value
4898 * of MIDR_EL1 and MPIDR_EL1.
4900 ARMCPRegInfo vpidr_regs[] = {
4901 { .name = "VPIDR_EL2", .state = ARM_CP_STATE_BOTH,
4902 .opc0 = 3, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 0,
4903 .access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any,
4904 .type = ARM_CP_CONST, .resetvalue = cpu->midr,
4905 .fieldoffset = offsetof(CPUARMState, cp15.vpidr_el2) },
4906 { .name = "VMPIDR_EL2", .state = ARM_CP_STATE_BOTH,
4907 .opc0 = 3, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 5,
4908 .access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any,
4909 .type = ARM_CP_NO_RAW,
4910 .writefn = arm_cp_write_ignore, .readfn = mpidr_read },
4913 define_arm_cp_regs(cpu, vpidr_regs);
4914 define_arm_cp_regs(cpu, el3_no_el2_cp_reginfo);
4917 if (arm_feature(env, ARM_FEATURE_EL3)) {
4918 define_arm_cp_regs(cpu, el3_cp_reginfo);
4919 ARMCPRegInfo el3_regs[] = {
4920 { .name = "RVBAR_EL3", .state = ARM_CP_STATE_AA64,
4921 .opc0 = 3, .opc1 = 6, .crn = 12, .crm = 0, .opc2 = 1,
4922 .type = ARM_CP_CONST, .access = PL3_R, .resetvalue = cpu->rvbar },
4923 { .name = "SCTLR_EL3", .state = ARM_CP_STATE_AA64,
4924 .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 0, .opc2 = 0,
4926 .raw_writefn = raw_write, .writefn = sctlr_write,
4927 .fieldoffset = offsetof(CPUARMState, cp15.sctlr_el[3]),
4928 .resetvalue = cpu->reset_sctlr },
4932 define_arm_cp_regs(cpu, el3_regs);
4934 /* The behaviour of NSACR is sufficiently various that we don't
4935 * try to describe it in a single reginfo:
4936 * if EL3 is 64 bit, then trap to EL3 from S EL1,
4937 * reads as constant 0xc00 from NS EL1 and NS EL2
4938 * if EL3 is 32 bit, then RW at EL3, RO at NS EL1 and NS EL2
4939 * if v7 without EL3, register doesn't exist
4940 * if v8 without EL3, reads as constant 0xc00 from NS EL1 and NS EL2
4942 if (arm_feature(env, ARM_FEATURE_EL3)) {
4943 if (arm_feature(env, ARM_FEATURE_AARCH64)) {
4944 ARMCPRegInfo nsacr = {
4945 .name = "NSACR", .type = ARM_CP_CONST,
4946 .cp = 15, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 2,
4947 .access = PL1_RW, .accessfn = nsacr_access,
4950 define_one_arm_cp_reg(cpu, &nsacr);
4952 ARMCPRegInfo nsacr = {
4954 .cp = 15, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 2,
4955 .access = PL3_RW | PL1_R,
4957 .fieldoffset = offsetof(CPUARMState, cp15.nsacr)
4959 define_one_arm_cp_reg(cpu, &nsacr);
4962 if (arm_feature(env, ARM_FEATURE_V8)) {
4963 ARMCPRegInfo nsacr = {
4964 .name = "NSACR", .type = ARM_CP_CONST,
4965 .cp = 15, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 2,
4969 define_one_arm_cp_reg(cpu, &nsacr);
4973 if (arm_feature(env, ARM_FEATURE_PMSA)) {
4974 if (arm_feature(env, ARM_FEATURE_V6)) {
4975 /* PMSAv6 not implemented */
4976 assert(arm_feature(env, ARM_FEATURE_V7));
4977 define_arm_cp_regs(cpu, vmsa_pmsa_cp_reginfo);
4978 define_arm_cp_regs(cpu, pmsav7_cp_reginfo);
4980 define_arm_cp_regs(cpu, pmsav5_cp_reginfo);
4983 define_arm_cp_regs(cpu, vmsa_pmsa_cp_reginfo);
4984 define_arm_cp_regs(cpu, vmsa_cp_reginfo);
4986 if (arm_feature(env, ARM_FEATURE_THUMB2EE)) {
4987 define_arm_cp_regs(cpu, t2ee_cp_reginfo);
4989 if (arm_feature(env, ARM_FEATURE_GENERIC_TIMER)) {
4990 define_arm_cp_regs(cpu, generic_timer_cp_reginfo);
4992 if (arm_feature(env, ARM_FEATURE_VAPA)) {
4993 define_arm_cp_regs(cpu, vapa_cp_reginfo);
4995 if (arm_feature(env, ARM_FEATURE_CACHE_TEST_CLEAN)) {
4996 define_arm_cp_regs(cpu, cache_test_clean_cp_reginfo);
4998 if (arm_feature(env, ARM_FEATURE_CACHE_DIRTY_REG)) {
4999 define_arm_cp_regs(cpu, cache_dirty_status_cp_reginfo);
5001 if (arm_feature(env, ARM_FEATURE_CACHE_BLOCK_OPS)) {
5002 define_arm_cp_regs(cpu, cache_block_ops_cp_reginfo);
5004 if (arm_feature(env, ARM_FEATURE_OMAPCP)) {
5005 define_arm_cp_regs(cpu, omap_cp_reginfo);
5007 if (arm_feature(env, ARM_FEATURE_STRONGARM)) {
5008 define_arm_cp_regs(cpu, strongarm_cp_reginfo);
5010 if (arm_feature(env, ARM_FEATURE_XSCALE)) {
5011 define_arm_cp_regs(cpu, xscale_cp_reginfo);
5013 if (arm_feature(env, ARM_FEATURE_DUMMY_C15_REGS)) {
5014 define_arm_cp_regs(cpu, dummy_c15_cp_reginfo);
5016 if (arm_feature(env, ARM_FEATURE_LPAE)) {
5017 define_arm_cp_regs(cpu, lpae_cp_reginfo);
5019 /* Slightly awkwardly, the OMAP and StrongARM cores need all of
5020 * cp15 crn=0 to be writes-ignored, whereas for other cores they should
5021 * be read-only (ie write causes UNDEF exception).
5024 ARMCPRegInfo id_pre_v8_midr_cp_reginfo[] = {
5025 /* Pre-v8 MIDR space.
5026 * Note that the MIDR isn't a simple constant register because
5027 * of the TI925 behaviour where writes to another register can
5028 * cause the MIDR value to change.
5030 * Unimplemented registers in the c15 0 0 0 space default to
5031 * MIDR. Define MIDR first as this entire space, then CTR, TCMTR
5032 * and friends override accordingly.
5035 .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = CP_ANY,
5036 .access = PL1_R, .resetvalue = cpu->midr,
5037 .writefn = arm_cp_write_ignore, .raw_writefn = raw_write,
5038 .readfn = midr_read,
5039 .fieldoffset = offsetof(CPUARMState, cp15.c0_cpuid),
5040 .type = ARM_CP_OVERRIDE },
5041 /* crn = 0 op1 = 0 crm = 3..7 : currently unassigned; we RAZ. */
5043 .cp = 15, .crn = 0, .crm = 3, .opc1 = 0, .opc2 = CP_ANY,
5044 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
5046 .cp = 15, .crn = 0, .crm = 4, .opc1 = 0, .opc2 = CP_ANY,
5047 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
5049 .cp = 15, .crn = 0, .crm = 5, .opc1 = 0, .opc2 = CP_ANY,
5050 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
5052 .cp = 15, .crn = 0, .crm = 6, .opc1 = 0, .opc2 = CP_ANY,
5053 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
5055 .cp = 15, .crn = 0, .crm = 7, .opc1 = 0, .opc2 = CP_ANY,
5056 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
5059 ARMCPRegInfo id_v8_midr_cp_reginfo[] = {
5060 { .name = "MIDR_EL1", .state = ARM_CP_STATE_BOTH,
5061 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 0, .opc2 = 0,
5062 .access = PL1_R, .type = ARM_CP_NO_RAW, .resetvalue = cpu->midr,
5063 .fieldoffset = offsetof(CPUARMState, cp15.c0_cpuid),
5064 .readfn = midr_read },
5065 /* crn = 0 op1 = 0 crm = 0 op2 = 4,7 : AArch32 aliases of MIDR */
5066 { .name = "MIDR", .type = ARM_CP_ALIAS | ARM_CP_CONST,
5067 .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 4,
5068 .access = PL1_R, .resetvalue = cpu->midr },
5069 { .name = "MIDR", .type = ARM_CP_ALIAS | ARM_CP_CONST,
5070 .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 7,
5071 .access = PL1_R, .resetvalue = cpu->midr },
5072 { .name = "REVIDR_EL1", .state = ARM_CP_STATE_BOTH,
5073 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 0, .opc2 = 6,
5074 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = cpu->revidr },
5077 ARMCPRegInfo id_cp_reginfo[] = {
5078 /* These are common to v8 and pre-v8 */
5080 .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 1,
5081 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = cpu->ctr },
5082 { .name = "CTR_EL0", .state = ARM_CP_STATE_AA64,
5083 .opc0 = 3, .opc1 = 3, .opc2 = 1, .crn = 0, .crm = 0,
5084 .access = PL0_R, .accessfn = ctr_el0_access,
5085 .type = ARM_CP_CONST, .resetvalue = cpu->ctr },
5086 /* TCMTR and TLBTR exist in v8 but have no 64-bit versions */
5088 .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 2,
5089 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
5092 /* TLBTR is specific to VMSA */
5093 ARMCPRegInfo id_tlbtr_reginfo = {
5095 .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 3,
5096 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0,
5098 /* MPUIR is specific to PMSA V6+ */
5099 ARMCPRegInfo id_mpuir_reginfo = {
5101 .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 4,
5102 .access = PL1_R, .type = ARM_CP_CONST,
5103 .resetvalue = cpu->pmsav7_dregion << 8
5105 ARMCPRegInfo crn0_wi_reginfo = {
5106 .name = "CRN0_WI", .cp = 15, .crn = 0, .crm = CP_ANY,
5107 .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_W,
5108 .type = ARM_CP_NOP | ARM_CP_OVERRIDE
5110 if (arm_feature(env, ARM_FEATURE_OMAPCP) ||
5111 arm_feature(env, ARM_FEATURE_STRONGARM)) {
5113 /* Register the blanket "writes ignored" value first to cover the
5114 * whole space. Then update the specific ID registers to allow write
5115 * access, so that they ignore writes rather than causing them to
5118 define_one_arm_cp_reg(cpu, &crn0_wi_reginfo);
5119 for (r = id_pre_v8_midr_cp_reginfo;
5120 r->type != ARM_CP_SENTINEL; r++) {
5123 for (r = id_cp_reginfo; r->type != ARM_CP_SENTINEL; r++) {
5126 id_tlbtr_reginfo.access = PL1_RW;
5127 id_tlbtr_reginfo.access = PL1_RW;
5129 if (arm_feature(env, ARM_FEATURE_V8)) {
5130 define_arm_cp_regs(cpu, id_v8_midr_cp_reginfo);
5132 define_arm_cp_regs(cpu, id_pre_v8_midr_cp_reginfo);
5134 define_arm_cp_regs(cpu, id_cp_reginfo);
5135 if (!arm_feature(env, ARM_FEATURE_PMSA)) {
5136 define_one_arm_cp_reg(cpu, &id_tlbtr_reginfo);
5137 } else if (arm_feature(env, ARM_FEATURE_V7)) {
5138 define_one_arm_cp_reg(cpu, &id_mpuir_reginfo);
5142 if (arm_feature(env, ARM_FEATURE_MPIDR)) {
5143 define_arm_cp_regs(cpu, mpidr_cp_reginfo);
5146 if (arm_feature(env, ARM_FEATURE_AUXCR)) {
5147 ARMCPRegInfo auxcr_reginfo[] = {
5148 { .name = "ACTLR_EL1", .state = ARM_CP_STATE_BOTH,
5149 .opc0 = 3, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 1,
5150 .access = PL1_RW, .type = ARM_CP_CONST,
5151 .resetvalue = cpu->reset_auxcr },
5152 { .name = "ACTLR_EL2", .state = ARM_CP_STATE_BOTH,
5153 .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 0, .opc2 = 1,
5154 .access = PL2_RW, .type = ARM_CP_CONST,
5156 { .name = "ACTLR_EL3", .state = ARM_CP_STATE_AA64,
5157 .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 0, .opc2 = 1,
5158 .access = PL3_RW, .type = ARM_CP_CONST,
5162 define_arm_cp_regs(cpu, auxcr_reginfo);
5165 if (arm_feature(env, ARM_FEATURE_CBAR)) {
5166 if (arm_feature(env, ARM_FEATURE_AARCH64)) {
5167 /* 32 bit view is [31:18] 0...0 [43:32]. */
5168 uint32_t cbar32 = (extract64(cpu->reset_cbar, 18, 14) << 18)
5169 | extract64(cpu->reset_cbar, 32, 12);
5170 ARMCPRegInfo cbar_reginfo[] = {
5172 .type = ARM_CP_CONST,
5173 .cp = 15, .crn = 15, .crm = 0, .opc1 = 4, .opc2 = 0,
5174 .access = PL1_R, .resetvalue = cpu->reset_cbar },
5175 { .name = "CBAR_EL1", .state = ARM_CP_STATE_AA64,
5176 .type = ARM_CP_CONST,
5177 .opc0 = 3, .opc1 = 1, .crn = 15, .crm = 3, .opc2 = 0,
5178 .access = PL1_R, .resetvalue = cbar32 },
5181 /* We don't implement a r/w 64 bit CBAR currently */
5182 assert(arm_feature(env, ARM_FEATURE_CBAR_RO));
5183 define_arm_cp_regs(cpu, cbar_reginfo);
5185 ARMCPRegInfo cbar = {
5187 .cp = 15, .crn = 15, .crm = 0, .opc1 = 4, .opc2 = 0,
5188 .access = PL1_R|PL3_W, .resetvalue = cpu->reset_cbar,
5189 .fieldoffset = offsetof(CPUARMState,
5190 cp15.c15_config_base_address)
5192 if (arm_feature(env, ARM_FEATURE_CBAR_RO)) {
5193 cbar.access = PL1_R;
5194 cbar.fieldoffset = 0;
5195 cbar.type = ARM_CP_CONST;
5197 define_one_arm_cp_reg(cpu, &cbar);
5201 if (arm_feature(env, ARM_FEATURE_VBAR)) {
5202 ARMCPRegInfo vbar_cp_reginfo[] = {
5203 { .name = "VBAR", .state = ARM_CP_STATE_BOTH,
5204 .opc0 = 3, .crn = 12, .crm = 0, .opc1 = 0, .opc2 = 0,
5205 .access = PL1_RW, .writefn = vbar_write,
5206 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.vbar_s),
5207 offsetof(CPUARMState, cp15.vbar_ns) },
5211 define_arm_cp_regs(cpu, vbar_cp_reginfo);
5214 /* Generic registers whose values depend on the implementation */
5216 ARMCPRegInfo sctlr = {
5217 .name = "SCTLR", .state = ARM_CP_STATE_BOTH,
5218 .opc0 = 3, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 0,
5220 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.sctlr_s),
5221 offsetof(CPUARMState, cp15.sctlr_ns) },
5222 .writefn = sctlr_write, .resetvalue = cpu->reset_sctlr,
5223 .raw_writefn = raw_write,
5225 if (arm_feature(env, ARM_FEATURE_XSCALE)) {
5226 /* Normally we would always end the TB on an SCTLR write, but Linux
5227 * arch/arm/mach-pxa/sleep.S expects two instructions following
5228 * an MMU enable to execute from cache. Imitate this behaviour.
5230 sctlr.type |= ARM_CP_SUPPRESS_TB_END;
5232 define_one_arm_cp_reg(cpu, &sctlr);
5236 void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu)
5238 CPUState *cs = CPU(cpu);
5239 CPUARMState *env = &cpu->env;
5241 if (arm_feature(env, ARM_FEATURE_AARCH64)) {
5242 gdb_register_coprocessor(cs, aarch64_fpu_gdb_get_reg,
5243 aarch64_fpu_gdb_set_reg,
5244 34, "aarch64-fpu.xml", 0);
5245 } else if (arm_feature(env, ARM_FEATURE_NEON)) {
5246 gdb_register_coprocessor(cs, vfp_gdb_get_reg, vfp_gdb_set_reg,
5247 51, "arm-neon.xml", 0);
5248 } else if (arm_feature(env, ARM_FEATURE_VFP3)) {
5249 gdb_register_coprocessor(cs, vfp_gdb_get_reg, vfp_gdb_set_reg,
5250 35, "arm-vfp3.xml", 0);
5251 } else if (arm_feature(env, ARM_FEATURE_VFP)) {
5252 gdb_register_coprocessor(cs, vfp_gdb_get_reg, vfp_gdb_set_reg,
5253 19, "arm-vfp.xml", 0);
5257 /* Sort alphabetically by type name, except for "any". */
5258 static gint arm_cpu_list_compare(gconstpointer a, gconstpointer b)
5260 ObjectClass *class_a = (ObjectClass *)a;
5261 ObjectClass *class_b = (ObjectClass *)b;
5262 const char *name_a, *name_b;
5264 name_a = object_class_get_name(class_a);
5265 name_b = object_class_get_name(class_b);
5266 if (strcmp(name_a, "any-" TYPE_ARM_CPU) == 0) {
5268 } else if (strcmp(name_b, "any-" TYPE_ARM_CPU) == 0) {
5271 return strcmp(name_a, name_b);
5275 static void arm_cpu_list_entry(gpointer data, gpointer user_data)
5277 ObjectClass *oc = data;
5278 CPUListState *s = user_data;
5279 const char *typename;
5282 typename = object_class_get_name(oc);
5283 name = g_strndup(typename, strlen(typename) - strlen("-" TYPE_ARM_CPU));
5284 (*s->cpu_fprintf)(s->file, " %s\n",
5289 void arm_cpu_list(FILE *f, fprintf_function cpu_fprintf)
5293 .cpu_fprintf = cpu_fprintf,
5297 list = object_class_get_list(TYPE_ARM_CPU, false);
5298 list = g_slist_sort(list, arm_cpu_list_compare);
5299 (*cpu_fprintf)(f, "Available CPUs:\n");
5300 g_slist_foreach(list, arm_cpu_list_entry, &s);
5303 /* The 'host' CPU type is dynamically registered only if KVM is
5304 * enabled, so we have to special-case it here:
5306 (*cpu_fprintf)(f, " host (only available in KVM mode)\n");
5310 static void arm_cpu_add_definition(gpointer data, gpointer user_data)
5312 ObjectClass *oc = data;
5313 CpuDefinitionInfoList **cpu_list = user_data;
5314 CpuDefinitionInfoList *entry;
5315 CpuDefinitionInfo *info;
5316 const char *typename;
5318 typename = object_class_get_name(oc);
5319 info = g_malloc0(sizeof(*info));
5320 info->name = g_strndup(typename,
5321 strlen(typename) - strlen("-" TYPE_ARM_CPU));
5322 info->q_typename = g_strdup(typename);
5324 entry = g_malloc0(sizeof(*entry));
5325 entry->value = info;
5326 entry->next = *cpu_list;
5330 CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
5332 CpuDefinitionInfoList *cpu_list = NULL;
5335 list = object_class_get_list(TYPE_ARM_CPU, false);
5336 g_slist_foreach(list, arm_cpu_add_definition, &cpu_list);
5342 static void add_cpreg_to_hashtable(ARMCPU *cpu, const ARMCPRegInfo *r,
5343 void *opaque, int state, int secstate,
5344 int crm, int opc1, int opc2)
5346 /* Private utility function for define_one_arm_cp_reg_with_opaque():
5347 * add a single reginfo struct to the hash table.
5349 uint32_t *key = g_new(uint32_t, 1);
5350 ARMCPRegInfo *r2 = g_memdup(r, sizeof(ARMCPRegInfo));
5351 int is64 = (r->type & ARM_CP_64BIT) ? 1 : 0;
5352 int ns = (secstate & ARM_CP_SECSTATE_NS) ? 1 : 0;
5354 /* Reset the secure state to the specific incoming state. This is
5355 * necessary as the register may have been defined with both states.
5357 r2->secure = secstate;
5359 if (r->bank_fieldoffsets[0] && r->bank_fieldoffsets[1]) {
5360 /* Register is banked (using both entries in array).
5361 * Overwriting fieldoffset as the array is only used to define
5362 * banked registers but later only fieldoffset is used.
5364 r2->fieldoffset = r->bank_fieldoffsets[ns];
5367 if (state == ARM_CP_STATE_AA32) {
5368 if (r->bank_fieldoffsets[0] && r->bank_fieldoffsets[1]) {
5369 /* If the register is banked then we don't need to migrate or
5370 * reset the 32-bit instance in certain cases:
5372 * 1) If the register has both 32-bit and 64-bit instances then we
5373 * can count on the 64-bit instance taking care of the
5375 * 2) If ARMv8 is enabled then we can count on a 64-bit version
5376 * taking care of the secure bank. This requires that separate
5377 * 32 and 64-bit definitions are provided.
5379 if ((r->state == ARM_CP_STATE_BOTH && ns) ||
5380 (arm_feature(&cpu->env, ARM_FEATURE_V8) && !ns)) {
5381 r2->type |= ARM_CP_ALIAS;
5383 } else if ((secstate != r->secure) && !ns) {
5384 /* The register is not banked so we only want to allow migration of
5385 * the non-secure instance.
5387 r2->type |= ARM_CP_ALIAS;
5390 if (r->state == ARM_CP_STATE_BOTH) {
5391 /* We assume it is a cp15 register if the .cp field is left unset.
5397 #ifdef HOST_WORDS_BIGENDIAN
5398 if (r2->fieldoffset) {
5399 r2->fieldoffset += sizeof(uint32_t);
5404 if (state == ARM_CP_STATE_AA64) {
5405 /* To allow abbreviation of ARMCPRegInfo
5406 * definitions, we treat cp == 0 as equivalent to
5407 * the value for "standard guest-visible sysreg".
5408 * STATE_BOTH definitions are also always "standard
5409 * sysreg" in their AArch64 view (the .cp value may
5410 * be non-zero for the benefit of the AArch32 view).
5412 if (r->cp == 0 || r->state == ARM_CP_STATE_BOTH) {
5413 r2->cp = CP_REG_ARM64_SYSREG_CP;
5415 *key = ENCODE_AA64_CP_REG(r2->cp, r2->crn, crm,
5416 r2->opc0, opc1, opc2);
5418 *key = ENCODE_CP_REG(r2->cp, is64, ns, r2->crn, crm, opc1, opc2);
5421 r2->opaque = opaque;
5423 /* reginfo passed to helpers is correct for the actual access,
5424 * and is never ARM_CP_STATE_BOTH:
5427 /* Make sure reginfo passed to helpers for wildcarded regs
5428 * has the correct crm/opc1/opc2 for this reg, not CP_ANY:
5433 /* By convention, for wildcarded registers only the first
5434 * entry is used for migration; the others are marked as
5435 * ALIAS so we don't try to transfer the register
5436 * multiple times. Special registers (ie NOP/WFI) are
5437 * never migratable and not even raw-accessible.
5439 if ((r->type & ARM_CP_SPECIAL)) {
5440 r2->type |= ARM_CP_NO_RAW;
5442 if (((r->crm == CP_ANY) && crm != 0) ||
5443 ((r->opc1 == CP_ANY) && opc1 != 0) ||
5444 ((r->opc2 == CP_ANY) && opc2 != 0)) {
5445 r2->type |= ARM_CP_ALIAS;
5448 /* Check that raw accesses are either forbidden or handled. Note that
5449 * we can't assert this earlier because the setup of fieldoffset for
5450 * banked registers has to be done first.
5452 if (!(r2->type & ARM_CP_NO_RAW)) {
5453 assert(!raw_accessors_invalid(r2));
5456 /* Overriding of an existing definition must be explicitly
5459 if (!(r->type & ARM_CP_OVERRIDE)) {
5460 ARMCPRegInfo *oldreg;
5461 oldreg = g_hash_table_lookup(cpu->cp_regs, key);
5462 if (oldreg && !(oldreg->type & ARM_CP_OVERRIDE)) {
5463 fprintf(stderr, "Register redefined: cp=%d %d bit "
5464 "crn=%d crm=%d opc1=%d opc2=%d, "
5465 "was %s, now %s\n", r2->cp, 32 + 32 * is64,
5466 r2->crn, r2->crm, r2->opc1, r2->opc2,
5467 oldreg->name, r2->name);
5468 g_assert_not_reached();
5471 g_hash_table_insert(cpu->cp_regs, key, r2);
5475 void define_one_arm_cp_reg_with_opaque(ARMCPU *cpu,
5476 const ARMCPRegInfo *r, void *opaque)
5478 /* Define implementations of coprocessor registers.
5479 * We store these in a hashtable because typically
5480 * there are less than 150 registers in a space which
5481 * is 16*16*16*8*8 = 262144 in size.
5482 * Wildcarding is supported for the crm, opc1 and opc2 fields.
5483 * If a register is defined twice then the second definition is
5484 * used, so this can be used to define some generic registers and
5485 * then override them with implementation specific variations.
5486 * At least one of the original and the second definition should
5487 * include ARM_CP_OVERRIDE in its type bits -- this is just a guard
5488 * against accidental use.
5490 * The state field defines whether the register is to be
5491 * visible in the AArch32 or AArch64 execution state. If the
5492 * state is set to ARM_CP_STATE_BOTH then we synthesise a
5493 * reginfo structure for the AArch32 view, which sees the lower
5494 * 32 bits of the 64 bit register.
5496 * Only registers visible in AArch64 may set r->opc0; opc0 cannot
5497 * be wildcarded. AArch64 registers are always considered to be 64
5498 * bits; the ARM_CP_64BIT* flag applies only to the AArch32 view of
5499 * the register, if any.
5501 int crm, opc1, opc2, state;
5502 int crmmin = (r->crm == CP_ANY) ? 0 : r->crm;
5503 int crmmax = (r->crm == CP_ANY) ? 15 : r->crm;
5504 int opc1min = (r->opc1 == CP_ANY) ? 0 : r->opc1;
5505 int opc1max = (r->opc1 == CP_ANY) ? 7 : r->opc1;
5506 int opc2min = (r->opc2 == CP_ANY) ? 0 : r->opc2;
5507 int opc2max = (r->opc2 == CP_ANY) ? 7 : r->opc2;
5508 /* 64 bit registers have only CRm and Opc1 fields */
5509 assert(!((r->type & ARM_CP_64BIT) && (r->opc2 || r->crn)));
5510 /* op0 only exists in the AArch64 encodings */
5511 assert((r->state != ARM_CP_STATE_AA32) || (r->opc0 == 0));
5512 /* AArch64 regs are all 64 bit so ARM_CP_64BIT is meaningless */
5513 assert((r->state != ARM_CP_STATE_AA64) || !(r->type & ARM_CP_64BIT));
5514 /* The AArch64 pseudocode CheckSystemAccess() specifies that op1
5515 * encodes a minimum access level for the register. We roll this
5516 * runtime check into our general permission check code, so check
5517 * here that the reginfo's specified permissions are strict enough
5518 * to encompass the generic architectural permission check.
5520 if (r->state != ARM_CP_STATE_AA32) {
5523 case 0: case 1: case 2:
5536 /* unallocated encoding, so not possible */
5544 /* min_EL EL1, secure mode only (we don't check the latter) */
5548 /* broken reginfo with out-of-range opc1 */
5552 /* assert our permissions are not too lax (stricter is fine) */
5553 assert((r->access & ~mask) == 0);
5556 /* Check that the register definition has enough info to handle
5557 * reads and writes if they are permitted.
5559 if (!(r->type & (ARM_CP_SPECIAL|ARM_CP_CONST))) {
5560 if (r->access & PL3_R) {
5561 assert((r->fieldoffset ||
5562 (r->bank_fieldoffsets[0] && r->bank_fieldoffsets[1])) ||
5565 if (r->access & PL3_W) {
5566 assert((r->fieldoffset ||
5567 (r->bank_fieldoffsets[0] && r->bank_fieldoffsets[1])) ||
5571 /* Bad type field probably means missing sentinel at end of reg list */
5572 assert(cptype_valid(r->type));
5573 for (crm = crmmin; crm <= crmmax; crm++) {
5574 for (opc1 = opc1min; opc1 <= opc1max; opc1++) {
5575 for (opc2 = opc2min; opc2 <= opc2max; opc2++) {
5576 for (state = ARM_CP_STATE_AA32;
5577 state <= ARM_CP_STATE_AA64; state++) {
5578 if (r->state != state && r->state != ARM_CP_STATE_BOTH) {
5581 if (state == ARM_CP_STATE_AA32) {
5582 /* Under AArch32 CP registers can be common
5583 * (same for secure and non-secure world) or banked.
5585 switch (r->secure) {
5586 case ARM_CP_SECSTATE_S:
5587 case ARM_CP_SECSTATE_NS:
5588 add_cpreg_to_hashtable(cpu, r, opaque, state,
5589 r->secure, crm, opc1, opc2);
5592 add_cpreg_to_hashtable(cpu, r, opaque, state,
5595 add_cpreg_to_hashtable(cpu, r, opaque, state,
5601 /* AArch64 registers get mapped to non-secure instance
5603 add_cpreg_to_hashtable(cpu, r, opaque, state,
5613 void define_arm_cp_regs_with_opaque(ARMCPU *cpu,
5614 const ARMCPRegInfo *regs, void *opaque)
5616 /* Define a whole list of registers */
5617 const ARMCPRegInfo *r;
5618 for (r = regs; r->type != ARM_CP_SENTINEL; r++) {
5619 define_one_arm_cp_reg_with_opaque(cpu, r, opaque);
5623 const ARMCPRegInfo *get_arm_cp_reginfo(GHashTable *cpregs, uint32_t encoded_cp)
5625 return g_hash_table_lookup(cpregs, &encoded_cp);
5628 void arm_cp_write_ignore(CPUARMState *env, const ARMCPRegInfo *ri,
5631 /* Helper coprocessor write function for write-ignore registers */
5634 uint64_t arm_cp_read_zero(CPUARMState *env, const ARMCPRegInfo *ri)
5636 /* Helper coprocessor write function for read-as-zero registers */
5640 void arm_cp_reset_ignore(CPUARMState *env, const ARMCPRegInfo *opaque)
5642 /* Helper coprocessor reset function for do-nothing-on-reset registers */
5645 static int bad_mode_switch(CPUARMState *env, int mode, CPSRWriteType write_type)
5647 /* Return true if it is not valid for us to switch to
5648 * this CPU mode (ie all the UNPREDICTABLE cases in
5649 * the ARM ARM CPSRWriteByInstr pseudocode).
5652 /* Changes to or from Hyp via MSR and CPS are illegal. */
5653 if (write_type == CPSRWriteByInstr &&
5654 ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_HYP ||
5655 mode == ARM_CPU_MODE_HYP)) {
5660 case ARM_CPU_MODE_USR:
5662 case ARM_CPU_MODE_SYS:
5663 case ARM_CPU_MODE_SVC:
5664 case ARM_CPU_MODE_ABT:
5665 case ARM_CPU_MODE_UND:
5666 case ARM_CPU_MODE_IRQ:
5667 case ARM_CPU_MODE_FIQ:
5668 /* Note that we don't implement the IMPDEF NSACR.RFR which in v7
5669 * allows FIQ mode to be Secure-only. (In v8 this doesn't exist.)
5671 /* If HCR.TGE is set then changes from Monitor to NS PL1 via MSR
5672 * and CPS are treated as illegal mode changes.
5674 if (write_type == CPSRWriteByInstr &&
5675 (env->cp15.hcr_el2 & HCR_TGE) &&
5676 (env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_MON &&
5677 !arm_is_secure_below_el3(env)) {
5681 case ARM_CPU_MODE_HYP:
5682 return !arm_feature(env, ARM_FEATURE_EL2)
5683 || arm_current_el(env) < 2 || arm_is_secure(env);
5684 case ARM_CPU_MODE_MON:
5685 return arm_current_el(env) < 3;
5691 uint32_t cpsr_read(CPUARMState *env)
5694 ZF = (env->ZF == 0);
5695 return env->uncached_cpsr | (env->NF & 0x80000000) | (ZF << 30) |
5696 (env->CF << 29) | ((env->VF & 0x80000000) >> 3) | (env->QF << 27)
5697 | (env->thumb << 5) | ((env->condexec_bits & 3) << 25)
5698 | ((env->condexec_bits & 0xfc) << 8)
5699 | (env->GE << 16) | (env->daif & CPSR_AIF);
5702 void cpsr_write(CPUARMState *env, uint32_t val, uint32_t mask,
5703 CPSRWriteType write_type)
5705 uint32_t changed_daif;
5707 if (mask & CPSR_NZCV) {
5708 env->ZF = (~val) & CPSR_Z;
5710 env->CF = (val >> 29) & 1;
5711 env->VF = (val << 3) & 0x80000000;
5714 env->QF = ((val & CPSR_Q) != 0);
5716 env->thumb = ((val & CPSR_T) != 0);
5717 if (mask & CPSR_IT_0_1) {
5718 env->condexec_bits &= ~3;
5719 env->condexec_bits |= (val >> 25) & 3;
5721 if (mask & CPSR_IT_2_7) {
5722 env->condexec_bits &= 3;
5723 env->condexec_bits |= (val >> 8) & 0xfc;
5725 if (mask & CPSR_GE) {
5726 env->GE = (val >> 16) & 0xf;
5729 /* In a V7 implementation that includes the security extensions but does
5730 * not include Virtualization Extensions the SCR.FW and SCR.AW bits control
5731 * whether non-secure software is allowed to change the CPSR_F and CPSR_A
5732 * bits respectively.
5734 * In a V8 implementation, it is permitted for privileged software to
5735 * change the CPSR A/F bits regardless of the SCR.AW/FW bits.
5737 if (write_type != CPSRWriteRaw && !arm_feature(env, ARM_FEATURE_V8) &&
5738 arm_feature(env, ARM_FEATURE_EL3) &&
5739 !arm_feature(env, ARM_FEATURE_EL2) &&
5740 !arm_is_secure(env)) {
5742 changed_daif = (env->daif ^ val) & mask;
5744 if (changed_daif & CPSR_A) {
5745 /* Check to see if we are allowed to change the masking of async
5746 * abort exceptions from a non-secure state.
5748 if (!(env->cp15.scr_el3 & SCR_AW)) {
5749 qemu_log_mask(LOG_GUEST_ERROR,
5750 "Ignoring attempt to switch CPSR_A flag from "
5751 "non-secure world with SCR.AW bit clear\n");
5756 if (changed_daif & CPSR_F) {
5757 /* Check to see if we are allowed to change the masking of FIQ
5758 * exceptions from a non-secure state.
5760 if (!(env->cp15.scr_el3 & SCR_FW)) {
5761 qemu_log_mask(LOG_GUEST_ERROR,
5762 "Ignoring attempt to switch CPSR_F flag from "
5763 "non-secure world with SCR.FW bit clear\n");
5767 /* Check whether non-maskable FIQ (NMFI) support is enabled.
5768 * If this bit is set software is not allowed to mask
5769 * FIQs, but is allowed to set CPSR_F to 0.
5771 if ((A32_BANKED_CURRENT_REG_GET(env, sctlr) & SCTLR_NMFI) &&
5773 qemu_log_mask(LOG_GUEST_ERROR,
5774 "Ignoring attempt to enable CPSR_F flag "
5775 "(non-maskable FIQ [NMFI] support enabled)\n");
5781 env->daif &= ~(CPSR_AIF & mask);
5782 env->daif |= val & CPSR_AIF & mask;
5784 if (write_type != CPSRWriteRaw &&
5785 ((env->uncached_cpsr ^ val) & mask & CPSR_M)) {
5786 if ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR) {
5787 /* Note that we can only get here in USR mode if this is a
5788 * gdb stub write; for this case we follow the architectural
5789 * behaviour for guest writes in USR mode of ignoring an attempt
5790 * to switch mode. (Those are caught by translate.c for writes
5791 * triggered by guest instructions.)
5794 } else if (bad_mode_switch(env, val & CPSR_M, write_type)) {
5795 /* Attempt to switch to an invalid mode: this is UNPREDICTABLE in
5796 * v7, and has defined behaviour in v8:
5797 * + leave CPSR.M untouched
5798 * + allow changes to the other CPSR fields
5800 * For user changes via the GDB stub, we don't set PSTATE.IL,
5801 * as this would be unnecessarily harsh for a user error.
5804 if (write_type != CPSRWriteByGDBStub &&
5805 arm_feature(env, ARM_FEATURE_V8)) {
5810 switch_mode(env, val & CPSR_M);
5813 mask &= ~CACHED_CPSR_BITS;
5814 env->uncached_cpsr = (env->uncached_cpsr & ~mask) | (val & mask);
5817 /* Sign/zero extend */
5818 uint32_t HELPER(sxtb16)(uint32_t x)
5821 res = (uint16_t)(int8_t)x;
5822 res |= (uint32_t)(int8_t)(x >> 16) << 16;
5826 uint32_t HELPER(uxtb16)(uint32_t x)
5829 res = (uint16_t)(uint8_t)x;
5830 res |= (uint32_t)(uint8_t)(x >> 16) << 16;
5834 int32_t HELPER(sdiv)(int32_t num, int32_t den)
5838 if (num == INT_MIN && den == -1)
5843 uint32_t HELPER(udiv)(uint32_t num, uint32_t den)
5850 uint32_t HELPER(rbit)(uint32_t x)
5855 #if defined(CONFIG_USER_ONLY)
5857 /* These should probably raise undefined insn exceptions. */
5858 void HELPER(v7m_msr)(CPUARMState *env, uint32_t reg, uint32_t val)
5860 ARMCPU *cpu = arm_env_get_cpu(env);
5862 cpu_abort(CPU(cpu), "v7m_msr %d\n", reg);
5865 uint32_t HELPER(v7m_mrs)(CPUARMState *env, uint32_t reg)
5867 ARMCPU *cpu = arm_env_get_cpu(env);
5869 cpu_abort(CPU(cpu), "v7m_mrs %d\n", reg);
5873 void switch_mode(CPUARMState *env, int mode)
5875 ARMCPU *cpu = arm_env_get_cpu(env);
5877 if (mode != ARM_CPU_MODE_USR) {
5878 cpu_abort(CPU(cpu), "Tried to switch out of user mode\n");
5882 uint32_t arm_phys_excp_target_el(CPUState *cs, uint32_t excp_idx,
5883 uint32_t cur_el, bool secure)
5888 void aarch64_sync_64_to_32(CPUARMState *env)
5890 g_assert_not_reached();
5895 void switch_mode(CPUARMState *env, int mode)
5900 old_mode = env->uncached_cpsr & CPSR_M;
5901 if (mode == old_mode)
5904 if (old_mode == ARM_CPU_MODE_FIQ) {
5905 memcpy (env->fiq_regs, env->regs + 8, 5 * sizeof(uint32_t));
5906 memcpy (env->regs + 8, env->usr_regs, 5 * sizeof(uint32_t));
5907 } else if (mode == ARM_CPU_MODE_FIQ) {
5908 memcpy (env->usr_regs, env->regs + 8, 5 * sizeof(uint32_t));
5909 memcpy (env->regs + 8, env->fiq_regs, 5 * sizeof(uint32_t));
5912 i = bank_number(old_mode);
5913 env->banked_r13[i] = env->regs[13];
5914 env->banked_r14[i] = env->regs[14];
5915 env->banked_spsr[i] = env->spsr;
5917 i = bank_number(mode);
5918 env->regs[13] = env->banked_r13[i];
5919 env->regs[14] = env->banked_r14[i];
5920 env->spsr = env->banked_spsr[i];
5923 /* Physical Interrupt Target EL Lookup Table
5925 * [ From ARM ARM section G1.13.4 (Table G1-15) ]
5927 * The below multi-dimensional table is used for looking up the target
5928 * exception level given numerous condition criteria. Specifically, the
5929 * target EL is based on SCR and HCR routing controls as well as the
5930 * currently executing EL and secure state.
5933 * target_el_table[2][2][2][2][2][4]
5934 * | | | | | +--- Current EL
5935 * | | | | +------ Non-secure(0)/Secure(1)
5936 * | | | +--------- HCR mask override
5937 * | | +------------ SCR exec state control
5938 * | +--------------- SCR mask override
5939 * +------------------ 32-bit(0)/64-bit(1) EL3
5941 * The table values are as such:
5945 * The ARM ARM target EL table includes entries indicating that an "exception
5946 * is not taken". The two cases where this is applicable are:
5947 * 1) An exception is taken from EL3 but the SCR does not have the exception
5949 * 2) An exception is taken from EL2 but the HCR does not have the exception
5951 * In these two cases, the below table contain a target of EL1. This value is
5952 * returned as it is expected that the consumer of the table data will check
5953 * for "target EL >= current EL" to ensure the exception is not taken.
5957 * BIT IRQ IMO Non-secure Secure
5958 * EL3 FIQ RW FMO EL0 EL1 EL2 EL3 EL0 EL1 EL2 EL3
5960 static const int8_t target_el_table[2][2][2][2][2][4] = {
5961 {{{{/* 0 0 0 0 */{ 1, 1, 2, -1 },{ 3, -1, -1, 3 },},
5962 {/* 0 0 0 1 */{ 2, 2, 2, -1 },{ 3, -1, -1, 3 },},},
5963 {{/* 0 0 1 0 */{ 1, 1, 2, -1 },{ 3, -1, -1, 3 },},
5964 {/* 0 0 1 1 */{ 2, 2, 2, -1 },{ 3, -1, -1, 3 },},},},
5965 {{{/* 0 1 0 0 */{ 3, 3, 3, -1 },{ 3, -1, -1, 3 },},
5966 {/* 0 1 0 1 */{ 3, 3, 3, -1 },{ 3, -1, -1, 3 },},},
5967 {{/* 0 1 1 0 */{ 3, 3, 3, -1 },{ 3, -1, -1, 3 },},
5968 {/* 0 1 1 1 */{ 3, 3, 3, -1 },{ 3, -1, -1, 3 },},},},},
5969 {{{{/* 1 0 0 0 */{ 1, 1, 2, -1 },{ 1, 1, -1, 1 },},
5970 {/* 1 0 0 1 */{ 2, 2, 2, -1 },{ 1, 1, -1, 1 },},},
5971 {{/* 1 0 1 0 */{ 1, 1, 1, -1 },{ 1, 1, -1, 1 },},
5972 {/* 1 0 1 1 */{ 2, 2, 2, -1 },{ 1, 1, -1, 1 },},},},
5973 {{{/* 1 1 0 0 */{ 3, 3, 3, -1 },{ 3, 3, -1, 3 },},
5974 {/* 1 1 0 1 */{ 3, 3, 3, -1 },{ 3, 3, -1, 3 },},},
5975 {{/* 1 1 1 0 */{ 3, 3, 3, -1 },{ 3, 3, -1, 3 },},
5976 {/* 1 1 1 1 */{ 3, 3, 3, -1 },{ 3, 3, -1, 3 },},},},},
5980 * Determine the target EL for physical exceptions
5982 uint32_t arm_phys_excp_target_el(CPUState *cs, uint32_t excp_idx,
5983 uint32_t cur_el, bool secure)
5985 CPUARMState *env = cs->env_ptr;
5990 /* Is the highest EL AArch64? */
5991 int is64 = arm_feature(env, ARM_FEATURE_AARCH64);
5993 if (arm_feature(env, ARM_FEATURE_EL3)) {
5994 rw = ((env->cp15.scr_el3 & SCR_RW) == SCR_RW);
5996 /* Either EL2 is the highest EL (and so the EL2 register width
5997 * is given by is64); or there is no EL2 or EL3, in which case
5998 * the value of 'rw' does not affect the table lookup anyway.
6005 scr = ((env->cp15.scr_el3 & SCR_IRQ) == SCR_IRQ);
6006 hcr = ((env->cp15.hcr_el2 & HCR_IMO) == HCR_IMO);
6009 scr = ((env->cp15.scr_el3 & SCR_FIQ) == SCR_FIQ);
6010 hcr = ((env->cp15.hcr_el2 & HCR_FMO) == HCR_FMO);
6013 scr = ((env->cp15.scr_el3 & SCR_EA) == SCR_EA);
6014 hcr = ((env->cp15.hcr_el2 & HCR_AMO) == HCR_AMO);
6018 /* If HCR.TGE is set then HCR is treated as being 1 */
6019 hcr |= ((env->cp15.hcr_el2 & HCR_TGE) == HCR_TGE);
6021 /* Perform a table-lookup for the target EL given the current state */
6022 target_el = target_el_table[is64][scr][rw][hcr][secure][cur_el];
6024 assert(target_el > 0);
6029 static void v7m_push(CPUARMState *env, uint32_t val)
6031 CPUState *cs = CPU(arm_env_get_cpu(env));
6034 stl_phys(cs->as, env->regs[13], val);
6037 static uint32_t v7m_pop(CPUARMState *env)
6039 CPUState *cs = CPU(arm_env_get_cpu(env));
6042 val = ldl_phys(cs->as, env->regs[13]);
6047 /* Switch to V7M main or process stack pointer. */
6048 static void switch_v7m_sp(CPUARMState *env, bool new_spsel)
6051 bool old_spsel = env->v7m.control & R_V7M_CONTROL_SPSEL_MASK;
6053 if (old_spsel != new_spsel) {
6054 tmp = env->v7m.other_sp;
6055 env->v7m.other_sp = env->regs[13];
6056 env->regs[13] = tmp;
6058 env->v7m.control = deposit32(env->v7m.control,
6059 R_V7M_CONTROL_SPSEL_SHIFT,
6060 R_V7M_CONTROL_SPSEL_LENGTH, new_spsel);
6064 static uint32_t arm_v7m_load_vector(ARMCPU *cpu)
6066 CPUState *cs = CPU(cpu);
6067 CPUARMState *env = &cpu->env;
6069 hwaddr vec = env->v7m.vecbase + env->v7m.exception * 4;
6072 addr = address_space_ldl(cs->as, vec,
6073 MEMTXATTRS_UNSPECIFIED, &result);
6074 if (result != MEMTX_OK) {
6075 /* Architecturally this should cause a HardFault setting HSFR.VECTTBL,
6076 * which would then be immediately followed by our failing to load
6077 * the entry vector for that HardFault, which is a Lockup case.
6078 * Since we don't model Lockup, we just report this guest error
6081 cpu_abort(cs, "Failed to read from exception vector table "
6082 "entry %08x\n", (unsigned)vec);
6087 static void v7m_exception_taken(ARMCPU *cpu, uint32_t lr)
6089 /* Do the "take the exception" parts of exception entry,
6090 * but not the pushing of state to the stack. This is
6091 * similar to the pseudocode ExceptionTaken() function.
6093 CPUARMState *env = &cpu->env;
6096 armv7m_nvic_acknowledge_irq(env->nvic);
6097 switch_v7m_sp(env, 0);
6099 env->condexec_bits = 0;
6101 addr = arm_v7m_load_vector(cpu);
6102 env->regs[15] = addr & 0xfffffffe;
6103 env->thumb = addr & 1;
6106 static void v7m_push_stack(ARMCPU *cpu)
6108 /* Do the "set up stack frame" part of exception entry,
6109 * similar to pseudocode PushStack().
6111 CPUARMState *env = &cpu->env;
6112 uint32_t xpsr = xpsr_read(env);
6114 /* Align stack pointer if the guest wants that */
6115 if ((env->regs[13] & 4) && (env->v7m.ccr & R_V7M_CCR_STKALIGN_MASK)) {
6117 xpsr |= XPSR_SPREALIGN;
6119 /* Switch to the handler mode. */
6120 v7m_push(env, xpsr);
6121 v7m_push(env, env->regs[15]);
6122 v7m_push(env, env->regs[14]);
6123 v7m_push(env, env->regs[12]);
6124 v7m_push(env, env->regs[3]);
6125 v7m_push(env, env->regs[2]);
6126 v7m_push(env, env->regs[1]);
6127 v7m_push(env, env->regs[0]);
6130 static void do_v7m_exception_exit(ARMCPU *cpu)
6132 CPUARMState *env = &cpu->env;
6135 bool ufault = false;
6136 bool return_to_sp_process = false;
6137 bool return_to_handler = false;
6138 bool rettobase = false;
6140 /* We can only get here from an EXCP_EXCEPTION_EXIT, and
6141 * gen_bx_excret() enforces the architectural rule
6142 * that jumps to magic addresses don't have magic behaviour unless
6143 * we're in Handler mode (compare pseudocode BXWritePC()).
6145 assert(env->v7m.exception != 0);
6147 /* In the spec pseudocode ExceptionReturn() is called directly
6148 * from BXWritePC() and gets the full target PC value including
6149 * bit zero. In QEMU's implementation we treat it as a normal
6150 * jump-to-register (which is then caught later on), and so split
6151 * the target value up between env->regs[15] and env->thumb in
6152 * gen_bx(). Reconstitute it.
6154 type = env->regs[15];
6159 qemu_log_mask(CPU_LOG_INT, "Exception return: magic PC %" PRIx32
6160 " previous exception %d\n",
6161 type, env->v7m.exception);
6163 if (extract32(type, 5, 23) != extract32(-1, 5, 23)) {
6164 qemu_log_mask(LOG_GUEST_ERROR, "M profile: zero high bits in exception "
6165 "exit PC value 0x%" PRIx32 " are UNPREDICTABLE\n", type);
6168 if (env->v7m.exception != ARMV7M_EXCP_NMI) {
6169 /* Auto-clear FAULTMASK on return from other than NMI */
6170 env->daif &= ~PSTATE_F;
6173 switch (armv7m_nvic_complete_irq(env->nvic, env->v7m.exception)) {
6175 /* attempt to exit an exception that isn't active */
6179 /* still an irq active now */
6182 /* we returned to base exception level, no nesting.
6183 * (In the pseudocode this is written using "NestedActivation != 1"
6184 * where we have 'rettobase == false'.)
6189 g_assert_not_reached();
6192 switch (type & 0xf) {
6193 case 1: /* Return to Handler */
6194 return_to_handler = true;
6196 case 13: /* Return to Thread using Process stack */
6197 return_to_sp_process = true;
6199 case 9: /* Return to Thread using Main stack */
6201 !(env->v7m.ccr & R_V7M_CCR_NONBASETHRDENA_MASK)) {
6210 /* Bad exception return: instead of popping the exception
6211 * stack, directly take a usage fault on the current stack.
6213 env->v7m.cfsr |= R_V7M_CFSR_INVPC_MASK;
6214 armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE);
6215 v7m_exception_taken(cpu, type | 0xf0000000);
6216 qemu_log_mask(CPU_LOG_INT, "...taking UsageFault on existing "
6217 "stackframe: failed exception return integrity check\n");
6221 /* Switch to the target stack. */
6222 switch_v7m_sp(env, return_to_sp_process);
6223 /* Pop registers. */
6224 env->regs[0] = v7m_pop(env);
6225 env->regs[1] = v7m_pop(env);
6226 env->regs[2] = v7m_pop(env);
6227 env->regs[3] = v7m_pop(env);
6228 env->regs[12] = v7m_pop(env);
6229 env->regs[14] = v7m_pop(env);
6230 env->regs[15] = v7m_pop(env);
6231 if (env->regs[15] & 1) {
6232 qemu_log_mask(LOG_GUEST_ERROR,
6233 "M profile return from interrupt with misaligned "
6234 "PC is UNPREDICTABLE\n");
6235 /* Actual hardware seems to ignore the lsbit, and there are several
6236 * RTOSes out there which incorrectly assume the r15 in the stack
6237 * frame should be a Thumb-style "lsbit indicates ARM/Thumb" value.
6239 env->regs[15] &= ~1U;
6241 xpsr = v7m_pop(env);
6242 xpsr_write(env, xpsr, ~XPSR_SPREALIGN);
6243 /* Undo stack alignment. */
6244 if (xpsr & XPSR_SPREALIGN) {
6248 /* The restored xPSR exception field will be zero if we're
6249 * resuming in Thread mode. If that doesn't match what the
6250 * exception return type specified then this is a UsageFault.
6252 if (return_to_handler == (env->v7m.exception == 0)) {
6253 /* Take an INVPC UsageFault by pushing the stack again. */
6254 armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE);
6255 env->v7m.cfsr |= R_V7M_CFSR_INVPC_MASK;
6256 v7m_push_stack(cpu);
6257 v7m_exception_taken(cpu, type | 0xf0000000);
6258 qemu_log_mask(CPU_LOG_INT, "...taking UsageFault on new stackframe: "
6259 "failed exception return integrity check\n");
6263 /* Otherwise, we have a successful exception exit. */
6264 qemu_log_mask(CPU_LOG_INT, "...successful exception return\n");
6267 static void arm_log_exception(int idx)
6269 if (qemu_loglevel_mask(CPU_LOG_INT)) {
6270 const char *exc = NULL;
6271 static const char * const excnames[] = {
6272 [EXCP_UDEF] = "Undefined Instruction",
6274 [EXCP_PREFETCH_ABORT] = "Prefetch Abort",
6275 [EXCP_DATA_ABORT] = "Data Abort",
6278 [EXCP_BKPT] = "Breakpoint",
6279 [EXCP_EXCEPTION_EXIT] = "QEMU v7M exception exit",
6280 [EXCP_KERNEL_TRAP] = "QEMU intercept of kernel commpage",
6281 [EXCP_HVC] = "Hypervisor Call",
6282 [EXCP_HYP_TRAP] = "Hypervisor Trap",
6283 [EXCP_SMC] = "Secure Monitor Call",
6284 [EXCP_VIRQ] = "Virtual IRQ",
6285 [EXCP_VFIQ] = "Virtual FIQ",
6286 [EXCP_SEMIHOST] = "Semihosting call",
6287 [EXCP_NOCP] = "v7M NOCP UsageFault",
6288 [EXCP_INVSTATE] = "v7M INVSTATE UsageFault",
6291 if (idx >= 0 && idx < ARRAY_SIZE(excnames)) {
6292 exc = excnames[idx];
6297 qemu_log_mask(CPU_LOG_INT, "Taking exception %d [%s]\n", idx, exc);
6301 void arm_v7m_cpu_do_interrupt(CPUState *cs)
6303 ARMCPU *cpu = ARM_CPU(cs);
6304 CPUARMState *env = &cpu->env;
6307 arm_log_exception(cs->exception_index);
6310 if (env->v7m.control & R_V7M_CONTROL_SPSEL_MASK) {
6313 if (env->v7m.exception == 0)
6316 /* For exceptions we just mark as pending on the NVIC, and let that
6318 switch (cs->exception_index) {
6320 armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE);
6321 env->v7m.cfsr |= R_V7M_CFSR_UNDEFINSTR_MASK;
6324 armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE);
6325 env->v7m.cfsr |= R_V7M_CFSR_NOCP_MASK;
6328 armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE);
6329 env->v7m.cfsr |= R_V7M_CFSR_INVSTATE_MASK;
6332 /* The PC already points to the next instruction. */
6333 armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SVC);
6335 case EXCP_PREFETCH_ABORT:
6336 case EXCP_DATA_ABORT:
6337 /* Note that for M profile we don't have a guest facing FSR, but
6338 * the env->exception.fsr will be populated by the code that
6339 * raises the fault, in the A profile short-descriptor format.
6341 switch (env->exception.fsr & 0xf) {
6342 case 0x8: /* External Abort */
6343 switch (cs->exception_index) {
6344 case EXCP_PREFETCH_ABORT:
6345 env->v7m.cfsr |= R_V7M_CFSR_PRECISERR_MASK;
6346 qemu_log_mask(CPU_LOG_INT, "...with CFSR.PRECISERR\n");
6348 case EXCP_DATA_ABORT:
6350 (R_V7M_CFSR_IBUSERR_MASK | R_V7M_CFSR_BFARVALID_MASK);
6351 env->v7m.bfar = env->exception.vaddress;
6352 qemu_log_mask(CPU_LOG_INT,
6353 "...with CFSR.IBUSERR and BFAR 0x%x\n",
6357 armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_BUS);
6360 /* All other FSR values are either MPU faults or "can't happen
6361 * for M profile" cases.
6363 switch (cs->exception_index) {
6364 case EXCP_PREFETCH_ABORT:
6365 env->v7m.cfsr |= R_V7M_CFSR_IACCVIOL_MASK;
6366 qemu_log_mask(CPU_LOG_INT, "...with CFSR.IACCVIOL\n");
6368 case EXCP_DATA_ABORT:
6370 (R_V7M_CFSR_DACCVIOL_MASK | R_V7M_CFSR_MMARVALID_MASK);
6371 env->v7m.mmfar = env->exception.vaddress;
6372 qemu_log_mask(CPU_LOG_INT,
6373 "...with CFSR.DACCVIOL and MMFAR 0x%x\n",
6377 armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_MEM);
6382 if (semihosting_enabled()) {
6384 nr = arm_lduw_code(env, env->regs[15], arm_sctlr_b(env)) & 0xff;
6387 qemu_log_mask(CPU_LOG_INT,
6388 "...handling as semihosting call 0x%x\n",
6390 env->regs[0] = do_arm_semihosting(env);
6394 armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_DEBUG);
6398 case EXCP_EXCEPTION_EXIT:
6399 do_v7m_exception_exit(cpu);
6402 cpu_abort(cs, "Unhandled exception 0x%x\n", cs->exception_index);
6403 return; /* Never happens. Keep compiler happy. */
6406 v7m_push_stack(cpu);
6407 v7m_exception_taken(cpu, lr);
6408 qemu_log_mask(CPU_LOG_INT, "... as %d\n", env->v7m.exception);
6411 /* Function used to synchronize QEMU's AArch64 register set with AArch32
6412 * register set. This is necessary when switching between AArch32 and AArch64
6415 void aarch64_sync_32_to_64(CPUARMState *env)
6418 uint32_t mode = env->uncached_cpsr & CPSR_M;
6420 /* We can blanket copy R[0:7] to X[0:7] */
6421 for (i = 0; i < 8; i++) {
6422 env->xregs[i] = env->regs[i];
6425 /* Unless we are in FIQ mode, x8-x12 come from the user registers r8-r12.
6426 * Otherwise, they come from the banked user regs.
6428 if (mode == ARM_CPU_MODE_FIQ) {
6429 for (i = 8; i < 13; i++) {
6430 env->xregs[i] = env->usr_regs[i - 8];
6433 for (i = 8; i < 13; i++) {
6434 env->xregs[i] = env->regs[i];
6438 /* Registers x13-x23 are the various mode SP and FP registers. Registers
6439 * r13 and r14 are only copied if we are in that mode, otherwise we copy
6440 * from the mode banked register.
6442 if (mode == ARM_CPU_MODE_USR || mode == ARM_CPU_MODE_SYS) {
6443 env->xregs[13] = env->regs[13];
6444 env->xregs[14] = env->regs[14];
6446 env->xregs[13] = env->banked_r13[bank_number(ARM_CPU_MODE_USR)];
6447 /* HYP is an exception in that it is copied from r14 */
6448 if (mode == ARM_CPU_MODE_HYP) {
6449 env->xregs[14] = env->regs[14];
6451 env->xregs[14] = env->banked_r14[bank_number(ARM_CPU_MODE_USR)];
6455 if (mode == ARM_CPU_MODE_HYP) {
6456 env->xregs[15] = env->regs[13];
6458 env->xregs[15] = env->banked_r13[bank_number(ARM_CPU_MODE_HYP)];
6461 if (mode == ARM_CPU_MODE_IRQ) {
6462 env->xregs[16] = env->regs[14];
6463 env->xregs[17] = env->regs[13];
6465 env->xregs[16] = env->banked_r14[bank_number(ARM_CPU_MODE_IRQ)];
6466 env->xregs[17] = env->banked_r13[bank_number(ARM_CPU_MODE_IRQ)];
6469 if (mode == ARM_CPU_MODE_SVC) {
6470 env->xregs[18] = env->regs[14];
6471 env->xregs[19] = env->regs[13];
6473 env->xregs[18] = env->banked_r14[bank_number(ARM_CPU_MODE_SVC)];
6474 env->xregs[19] = env->banked_r13[bank_number(ARM_CPU_MODE_SVC)];
6477 if (mode == ARM_CPU_MODE_ABT) {
6478 env->xregs[20] = env->regs[14];
6479 env->xregs[21] = env->regs[13];
6481 env->xregs[20] = env->banked_r14[bank_number(ARM_CPU_MODE_ABT)];
6482 env->xregs[21] = env->banked_r13[bank_number(ARM_CPU_MODE_ABT)];
6485 if (mode == ARM_CPU_MODE_UND) {
6486 env->xregs[22] = env->regs[14];
6487 env->xregs[23] = env->regs[13];
6489 env->xregs[22] = env->banked_r14[bank_number(ARM_CPU_MODE_UND)];
6490 env->xregs[23] = env->banked_r13[bank_number(ARM_CPU_MODE_UND)];
6493 /* Registers x24-x30 are mapped to r8-r14 in FIQ mode. If we are in FIQ
6494 * mode, then we can copy from r8-r14. Otherwise, we copy from the
6495 * FIQ bank for r8-r14.
6497 if (mode == ARM_CPU_MODE_FIQ) {
6498 for (i = 24; i < 31; i++) {
6499 env->xregs[i] = env->regs[i - 16]; /* X[24:30] <- R[8:14] */
6502 for (i = 24; i < 29; i++) {
6503 env->xregs[i] = env->fiq_regs[i - 24];
6505 env->xregs[29] = env->banked_r13[bank_number(ARM_CPU_MODE_FIQ)];
6506 env->xregs[30] = env->banked_r14[bank_number(ARM_CPU_MODE_FIQ)];
6509 env->pc = env->regs[15];
6512 /* Function used to synchronize QEMU's AArch32 register set with AArch64
6513 * register set. This is necessary when switching between AArch32 and AArch64
6516 void aarch64_sync_64_to_32(CPUARMState *env)
6519 uint32_t mode = env->uncached_cpsr & CPSR_M;
6521 /* We can blanket copy X[0:7] to R[0:7] */
6522 for (i = 0; i < 8; i++) {
6523 env->regs[i] = env->xregs[i];
6526 /* Unless we are in FIQ mode, r8-r12 come from the user registers x8-x12.
6527 * Otherwise, we copy x8-x12 into the banked user regs.
6529 if (mode == ARM_CPU_MODE_FIQ) {
6530 for (i = 8; i < 13; i++) {
6531 env->usr_regs[i - 8] = env->xregs[i];
6534 for (i = 8; i < 13; i++) {
6535 env->regs[i] = env->xregs[i];
6539 /* Registers r13 & r14 depend on the current mode.
6540 * If we are in a given mode, we copy the corresponding x registers to r13
6541 * and r14. Otherwise, we copy the x register to the banked r13 and r14
6544 if (mode == ARM_CPU_MODE_USR || mode == ARM_CPU_MODE_SYS) {
6545 env->regs[13] = env->xregs[13];
6546 env->regs[14] = env->xregs[14];
6548 env->banked_r13[bank_number(ARM_CPU_MODE_USR)] = env->xregs[13];
6550 /* HYP is an exception in that it does not have its own banked r14 but
6551 * shares the USR r14
6553 if (mode == ARM_CPU_MODE_HYP) {
6554 env->regs[14] = env->xregs[14];
6556 env->banked_r14[bank_number(ARM_CPU_MODE_USR)] = env->xregs[14];
6560 if (mode == ARM_CPU_MODE_HYP) {
6561 env->regs[13] = env->xregs[15];
6563 env->banked_r13[bank_number(ARM_CPU_MODE_HYP)] = env->xregs[15];
6566 if (mode == ARM_CPU_MODE_IRQ) {
6567 env->regs[14] = env->xregs[16];
6568 env->regs[13] = env->xregs[17];
6570 env->banked_r14[bank_number(ARM_CPU_MODE_IRQ)] = env->xregs[16];
6571 env->banked_r13[bank_number(ARM_CPU_MODE_IRQ)] = env->xregs[17];
6574 if (mode == ARM_CPU_MODE_SVC) {
6575 env->regs[14] = env->xregs[18];
6576 env->regs[13] = env->xregs[19];
6578 env->banked_r14[bank_number(ARM_CPU_MODE_SVC)] = env->xregs[18];
6579 env->banked_r13[bank_number(ARM_CPU_MODE_SVC)] = env->xregs[19];
6582 if (mode == ARM_CPU_MODE_ABT) {
6583 env->regs[14] = env->xregs[20];
6584 env->regs[13] = env->xregs[21];
6586 env->banked_r14[bank_number(ARM_CPU_MODE_ABT)] = env->xregs[20];
6587 env->banked_r13[bank_number(ARM_CPU_MODE_ABT)] = env->xregs[21];
6590 if (mode == ARM_CPU_MODE_UND) {
6591 env->regs[14] = env->xregs[22];
6592 env->regs[13] = env->xregs[23];
6594 env->banked_r14[bank_number(ARM_CPU_MODE_UND)] = env->xregs[22];
6595 env->banked_r13[bank_number(ARM_CPU_MODE_UND)] = env->xregs[23];
6598 /* Registers x24-x30 are mapped to r8-r14 in FIQ mode. If we are in FIQ
6599 * mode, then we can copy to r8-r14. Otherwise, we copy to the
6600 * FIQ bank for r8-r14.
6602 if (mode == ARM_CPU_MODE_FIQ) {
6603 for (i = 24; i < 31; i++) {
6604 env->regs[i - 16] = env->xregs[i]; /* X[24:30] -> R[8:14] */
6607 for (i = 24; i < 29; i++) {
6608 env->fiq_regs[i - 24] = env->xregs[i];
6610 env->banked_r13[bank_number(ARM_CPU_MODE_FIQ)] = env->xregs[29];
6611 env->banked_r14[bank_number(ARM_CPU_MODE_FIQ)] = env->xregs[30];
6614 env->regs[15] = env->pc;
6617 static void arm_cpu_do_interrupt_aarch32(CPUState *cs)
6619 ARMCPU *cpu = ARM_CPU(cs);
6620 CPUARMState *env = &cpu->env;
6627 /* If this is a debug exception we must update the DBGDSCR.MOE bits */
6628 switch (env->exception.syndrome >> ARM_EL_EC_SHIFT) {
6630 case EC_BREAKPOINT_SAME_EL:
6634 case EC_WATCHPOINT_SAME_EL:
6640 case EC_VECTORCATCH:
6649 env->cp15.mdscr_el1 = deposit64(env->cp15.mdscr_el1, 2, 4, moe);
6652 /* TODO: Vectored interrupt controller. */
6653 switch (cs->exception_index) {
6655 new_mode = ARM_CPU_MODE_UND;
6664 new_mode = ARM_CPU_MODE_SVC;
6667 /* The PC already points to the next instruction. */
6671 env->exception.fsr = 2;
6672 /* Fall through to prefetch abort. */
6673 case EXCP_PREFETCH_ABORT:
6674 A32_BANKED_CURRENT_REG_SET(env, ifsr, env->exception.fsr);
6675 A32_BANKED_CURRENT_REG_SET(env, ifar, env->exception.vaddress);
6676 qemu_log_mask(CPU_LOG_INT, "...with IFSR 0x%x IFAR 0x%x\n",
6677 env->exception.fsr, (uint32_t)env->exception.vaddress);
6678 new_mode = ARM_CPU_MODE_ABT;
6680 mask = CPSR_A | CPSR_I;
6683 case EXCP_DATA_ABORT:
6684 A32_BANKED_CURRENT_REG_SET(env, dfsr, env->exception.fsr);
6685 A32_BANKED_CURRENT_REG_SET(env, dfar, env->exception.vaddress);
6686 qemu_log_mask(CPU_LOG_INT, "...with DFSR 0x%x DFAR 0x%x\n",
6688 (uint32_t)env->exception.vaddress);
6689 new_mode = ARM_CPU_MODE_ABT;
6691 mask = CPSR_A | CPSR_I;
6695 new_mode = ARM_CPU_MODE_IRQ;
6697 /* Disable IRQ and imprecise data aborts. */
6698 mask = CPSR_A | CPSR_I;
6700 if (env->cp15.scr_el3 & SCR_IRQ) {
6701 /* IRQ routed to monitor mode */
6702 new_mode = ARM_CPU_MODE_MON;
6707 new_mode = ARM_CPU_MODE_FIQ;
6709 /* Disable FIQ, IRQ and imprecise data aborts. */
6710 mask = CPSR_A | CPSR_I | CPSR_F;
6711 if (env->cp15.scr_el3 & SCR_FIQ) {
6712 /* FIQ routed to monitor mode */
6713 new_mode = ARM_CPU_MODE_MON;
6718 new_mode = ARM_CPU_MODE_IRQ;
6720 /* Disable IRQ and imprecise data aborts. */
6721 mask = CPSR_A | CPSR_I;
6725 new_mode = ARM_CPU_MODE_FIQ;
6727 /* Disable FIQ, IRQ and imprecise data aborts. */
6728 mask = CPSR_A | CPSR_I | CPSR_F;
6732 new_mode = ARM_CPU_MODE_MON;
6734 mask = CPSR_A | CPSR_I | CPSR_F;
6738 cpu_abort(cs, "Unhandled exception 0x%x\n", cs->exception_index);
6739 return; /* Never happens. Keep compiler happy. */
6742 if (new_mode == ARM_CPU_MODE_MON) {
6743 addr += env->cp15.mvbar;
6744 } else if (A32_BANKED_CURRENT_REG_GET(env, sctlr) & SCTLR_V) {
6745 /* High vectors. When enabled, base address cannot be remapped. */
6748 /* ARM v7 architectures provide a vector base address register to remap
6749 * the interrupt vector table.
6750 * This register is only followed in non-monitor mode, and is banked.
6751 * Note: only bits 31:5 are valid.
6753 addr += A32_BANKED_CURRENT_REG_GET(env, vbar);
6756 if ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_MON) {
6757 env->cp15.scr_el3 &= ~SCR_NS;
6760 switch_mode (env, new_mode);
6761 /* For exceptions taken to AArch32 we must clear the SS bit in both
6762 * PSTATE and in the old-state value we save to SPSR_<mode>, so zero it now.
6764 env->uncached_cpsr &= ~PSTATE_SS;
6765 env->spsr = cpsr_read(env);
6766 /* Clear IT bits. */
6767 env->condexec_bits = 0;
6768 /* Switch to the new mode, and to the correct instruction set. */
6769 env->uncached_cpsr = (env->uncached_cpsr & ~CPSR_M) | new_mode;
6770 /* Set new mode endianness */
6771 env->uncached_cpsr &= ~CPSR_E;
6772 if (env->cp15.sctlr_el[arm_current_el(env)] & SCTLR_EE) {
6773 env->uncached_cpsr |= CPSR_E;
6776 /* this is a lie, as the was no c1_sys on V4T/V5, but who cares
6777 * and we should just guard the thumb mode on V4 */
6778 if (arm_feature(env, ARM_FEATURE_V4T)) {
6779 env->thumb = (A32_BANKED_CURRENT_REG_GET(env, sctlr) & SCTLR_TE) != 0;
6781 env->regs[14] = env->regs[15] + offset;
6782 env->regs[15] = addr;
6785 /* Handle exception entry to a target EL which is using AArch64 */
6786 static void arm_cpu_do_interrupt_aarch64(CPUState *cs)
6788 ARMCPU *cpu = ARM_CPU(cs);
6789 CPUARMState *env = &cpu->env;
6790 unsigned int new_el = env->exception.target_el;
6791 target_ulong addr = env->cp15.vbar_el[new_el];
6792 unsigned int new_mode = aarch64_pstate_mode(new_el, true);
6794 if (arm_current_el(env) < new_el) {
6795 /* Entry vector offset depends on whether the implemented EL
6796 * immediately lower than the target level is using AArch32 or AArch64
6802 is_aa64 = (env->cp15.scr_el3 & SCR_RW) != 0;
6805 is_aa64 = (env->cp15.hcr_el2 & HCR_RW) != 0;
6808 is_aa64 = is_a64(env);
6811 g_assert_not_reached();
6819 } else if (pstate_read(env) & PSTATE_SP) {
6823 switch (cs->exception_index) {
6824 case EXCP_PREFETCH_ABORT:
6825 case EXCP_DATA_ABORT:
6826 env->cp15.far_el[new_el] = env->exception.vaddress;
6827 qemu_log_mask(CPU_LOG_INT, "...with FAR 0x%" PRIx64 "\n",
6828 env->cp15.far_el[new_el]);
6836 env->cp15.esr_el[new_el] = env->exception.syndrome;
6847 qemu_log_mask(CPU_LOG_INT,
6848 "...handling as semihosting call 0x%" PRIx64 "\n",
6850 env->xregs[0] = do_arm_semihosting(env);
6853 cpu_abort(cs, "Unhandled exception 0x%x\n", cs->exception_index);
6857 env->banked_spsr[aarch64_banked_spsr_index(new_el)] = pstate_read(env);
6858 aarch64_save_sp(env, arm_current_el(env));
6859 env->elr_el[new_el] = env->pc;
6861 env->banked_spsr[aarch64_banked_spsr_index(new_el)] = cpsr_read(env);
6862 env->elr_el[new_el] = env->regs[15];
6864 aarch64_sync_32_to_64(env);
6866 env->condexec_bits = 0;
6868 qemu_log_mask(CPU_LOG_INT, "...with ELR 0x%" PRIx64 "\n",
6869 env->elr_el[new_el]);
6871 pstate_write(env, PSTATE_DAIF | new_mode);
6873 aarch64_restore_sp(env, new_el);
6877 qemu_log_mask(CPU_LOG_INT, "...to EL%d PC 0x%" PRIx64 " PSTATE 0x%x\n",
6878 new_el, env->pc, pstate_read(env));
6881 static inline bool check_for_semihosting(CPUState *cs)
6883 /* Check whether this exception is a semihosting call; if so
6884 * then handle it and return true; otherwise return false.
6886 ARMCPU *cpu = ARM_CPU(cs);
6887 CPUARMState *env = &cpu->env;
6890 if (cs->exception_index == EXCP_SEMIHOST) {
6891 /* This is always the 64-bit semihosting exception.
6892 * The "is this usermode" and "is semihosting enabled"
6893 * checks have been done at translate time.
6895 qemu_log_mask(CPU_LOG_INT,
6896 "...handling as semihosting call 0x%" PRIx64 "\n",
6898 env->xregs[0] = do_arm_semihosting(env);
6905 /* Only intercept calls from privileged modes, to provide some
6906 * semblance of security.
6908 if (cs->exception_index != EXCP_SEMIHOST &&
6909 (!semihosting_enabled() ||
6910 ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR))) {
6914 switch (cs->exception_index) {
6916 /* This is always a semihosting call; the "is this usermode"
6917 * and "is semihosting enabled" checks have been done at
6922 /* Check for semihosting interrupt. */
6924 imm = arm_lduw_code(env, env->regs[15] - 2, arm_sctlr_b(env))
6930 imm = arm_ldl_code(env, env->regs[15] - 4, arm_sctlr_b(env))
6932 if (imm == 0x123456) {
6938 /* See if this is a semihosting syscall. */
6940 imm = arm_lduw_code(env, env->regs[15], arm_sctlr_b(env))
6952 qemu_log_mask(CPU_LOG_INT,
6953 "...handling as semihosting call 0x%x\n",
6955 env->regs[0] = do_arm_semihosting(env);
6960 /* Handle a CPU exception for A and R profile CPUs.
6961 * Do any appropriate logging, handle PSCI calls, and then hand off
6962 * to the AArch64-entry or AArch32-entry function depending on the
6963 * target exception level's register width.
6965 void arm_cpu_do_interrupt(CPUState *cs)
6967 ARMCPU *cpu = ARM_CPU(cs);
6968 CPUARMState *env = &cpu->env;
6969 unsigned int new_el = env->exception.target_el;
6971 assert(!arm_feature(env, ARM_FEATURE_M));
6973 arm_log_exception(cs->exception_index);
6974 qemu_log_mask(CPU_LOG_INT, "...from EL%d to EL%d\n", arm_current_el(env),
6976 if (qemu_loglevel_mask(CPU_LOG_INT)
6977 && !excp_is_internal(cs->exception_index)) {
6978 qemu_log_mask(CPU_LOG_INT, "...with ESR 0x%x/0x%" PRIx32 "\n",
6979 env->exception.syndrome >> ARM_EL_EC_SHIFT,
6980 env->exception.syndrome);
6983 if (arm_is_psci_call(cpu, cs->exception_index)) {
6984 arm_handle_psci_call(cpu);
6985 qemu_log_mask(CPU_LOG_INT, "...handled as PSCI call\n");
6989 /* Semihosting semantics depend on the register width of the
6990 * code that caused the exception, not the target exception level,
6991 * so must be handled here.
6993 if (check_for_semihosting(cs)) {
6997 assert(!excp_is_internal(cs->exception_index));
6998 if (arm_el_is_aa64(env, new_el)) {
6999 arm_cpu_do_interrupt_aarch64(cs);
7001 arm_cpu_do_interrupt_aarch32(cs);
7004 /* Hooks may change global state so BQL should be held, also the
7005 * BQL needs to be held for any modification of
7006 * cs->interrupt_request.
7008 g_assert(qemu_mutex_iothread_locked());
7010 arm_call_el_change_hook(cpu);
7012 if (!kvm_enabled()) {
7013 cs->interrupt_request |= CPU_INTERRUPT_EXITTB;
7017 /* Return the exception level which controls this address translation regime */
7018 static inline uint32_t regime_el(CPUARMState *env, ARMMMUIdx mmu_idx)
7021 case ARMMMUIdx_S2NS:
7022 case ARMMMUIdx_S1E2:
7024 case ARMMMUIdx_S1E3:
7026 case ARMMMUIdx_S1SE0:
7027 return arm_el_is_aa64(env, 3) ? 1 : 3;
7028 case ARMMMUIdx_S1SE1:
7029 case ARMMMUIdx_S1NSE0:
7030 case ARMMMUIdx_S1NSE1:
7031 case ARMMMUIdx_MPriv:
7032 case ARMMMUIdx_MNegPri:
7033 case ARMMMUIdx_MUser:
7036 g_assert_not_reached();
7040 /* Return true if this address translation regime is secure */
7041 static inline bool regime_is_secure(CPUARMState *env, ARMMMUIdx mmu_idx)
7044 case ARMMMUIdx_S12NSE0:
7045 case ARMMMUIdx_S12NSE1:
7046 case ARMMMUIdx_S1NSE0:
7047 case ARMMMUIdx_S1NSE1:
7048 case ARMMMUIdx_S1E2:
7049 case ARMMMUIdx_S2NS:
7050 case ARMMMUIdx_MPriv:
7051 case ARMMMUIdx_MNegPri:
7052 case ARMMMUIdx_MUser:
7054 case ARMMMUIdx_S1E3:
7055 case ARMMMUIdx_S1SE0:
7056 case ARMMMUIdx_S1SE1:
7059 g_assert_not_reached();
7063 /* Return the SCTLR value which controls this address translation regime */
7064 static inline uint32_t regime_sctlr(CPUARMState *env, ARMMMUIdx mmu_idx)
7066 return env->cp15.sctlr_el[regime_el(env, mmu_idx)];
7069 /* Return true if the specified stage of address translation is disabled */
7070 static inline bool regime_translation_disabled(CPUARMState *env,
7073 if (arm_feature(env, ARM_FEATURE_M)) {
7074 switch (env->v7m.mpu_ctrl &
7075 (R_V7M_MPU_CTRL_ENABLE_MASK | R_V7M_MPU_CTRL_HFNMIENA_MASK)) {
7076 case R_V7M_MPU_CTRL_ENABLE_MASK:
7077 /* Enabled, but not for HardFault and NMI */
7078 return mmu_idx == ARMMMUIdx_MNegPri;
7079 case R_V7M_MPU_CTRL_ENABLE_MASK | R_V7M_MPU_CTRL_HFNMIENA_MASK:
7080 /* Enabled for all cases */
7084 /* HFNMIENA set and ENABLE clear is UNPREDICTABLE, but
7085 * we warned about that in armv7m_nvic.c when the guest set it.
7091 if (mmu_idx == ARMMMUIdx_S2NS) {
7092 return (env->cp15.hcr_el2 & HCR_VM) == 0;
7094 return (regime_sctlr(env, mmu_idx) & SCTLR_M) == 0;
7097 static inline bool regime_translation_big_endian(CPUARMState *env,
7100 return (regime_sctlr(env, mmu_idx) & SCTLR_EE) != 0;
7103 /* Return the TCR controlling this translation regime */
7104 static inline TCR *regime_tcr(CPUARMState *env, ARMMMUIdx mmu_idx)
7106 if (mmu_idx == ARMMMUIdx_S2NS) {
7107 return &env->cp15.vtcr_el2;
7109 return &env->cp15.tcr_el[regime_el(env, mmu_idx)];
7112 /* Convert a possible stage1+2 MMU index into the appropriate
7115 static inline ARMMMUIdx stage_1_mmu_idx(ARMMMUIdx mmu_idx)
7117 if (mmu_idx == ARMMMUIdx_S12NSE0 || mmu_idx == ARMMMUIdx_S12NSE1) {
7118 mmu_idx += (ARMMMUIdx_S1NSE0 - ARMMMUIdx_S12NSE0);
7123 /* Returns TBI0 value for current regime el */
7124 uint32_t arm_regime_tbi0(CPUARMState *env, ARMMMUIdx mmu_idx)
7129 /* For EL0 and EL1, TBI is controlled by stage 1's TCR, so convert
7130 * a stage 1+2 mmu index into the appropriate stage 1 mmu index.
7132 mmu_idx = stage_1_mmu_idx(mmu_idx);
7134 tcr = regime_tcr(env, mmu_idx);
7135 el = regime_el(env, mmu_idx);
7138 return extract64(tcr->raw_tcr, 20, 1);
7140 return extract64(tcr->raw_tcr, 37, 1);
7144 /* Returns TBI1 value for current regime el */
7145 uint32_t arm_regime_tbi1(CPUARMState *env, ARMMMUIdx mmu_idx)
7150 /* For EL0 and EL1, TBI is controlled by stage 1's TCR, so convert
7151 * a stage 1+2 mmu index into the appropriate stage 1 mmu index.
7153 mmu_idx = stage_1_mmu_idx(mmu_idx);
7155 tcr = regime_tcr(env, mmu_idx);
7156 el = regime_el(env, mmu_idx);
7161 return extract64(tcr->raw_tcr, 38, 1);
7165 /* Return the TTBR associated with this translation regime */
7166 static inline uint64_t regime_ttbr(CPUARMState *env, ARMMMUIdx mmu_idx,
7169 if (mmu_idx == ARMMMUIdx_S2NS) {
7170 return env->cp15.vttbr_el2;
7173 return env->cp15.ttbr0_el[regime_el(env, mmu_idx)];
7175 return env->cp15.ttbr1_el[regime_el(env, mmu_idx)];
7179 /* Return true if the translation regime is using LPAE format page tables */
7180 static inline bool regime_using_lpae_format(CPUARMState *env,
7183 int el = regime_el(env, mmu_idx);
7184 if (el == 2 || arm_el_is_aa64(env, el)) {
7187 if (arm_feature(env, ARM_FEATURE_LPAE)
7188 && (regime_tcr(env, mmu_idx)->raw_tcr & TTBCR_EAE)) {
7194 /* Returns true if the stage 1 translation regime is using LPAE format page
7195 * tables. Used when raising alignment exceptions, whose FSR changes depending
7196 * on whether the long or short descriptor format is in use. */
7197 bool arm_s1_regime_using_lpae_format(CPUARMState *env, ARMMMUIdx mmu_idx)
7199 mmu_idx = stage_1_mmu_idx(mmu_idx);
7201 return regime_using_lpae_format(env, mmu_idx);
7204 static inline bool regime_is_user(CPUARMState *env, ARMMMUIdx mmu_idx)
7207 case ARMMMUIdx_S1SE0:
7208 case ARMMMUIdx_S1NSE0:
7209 case ARMMMUIdx_MUser:
7213 case ARMMMUIdx_S12NSE0:
7214 case ARMMMUIdx_S12NSE1:
7215 g_assert_not_reached();
7219 /* Translate section/page access permissions to page
7220 * R/W protection flags
7223 * @mmu_idx: MMU index indicating required translation regime
7224 * @ap: The 3-bit access permissions (AP[2:0])
7225 * @domain_prot: The 2-bit domain access permissions
7227 static inline int ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx,
7228 int ap, int domain_prot)
7230 bool is_user = regime_is_user(env, mmu_idx);
7232 if (domain_prot == 3) {
7233 return PAGE_READ | PAGE_WRITE;
7238 if (arm_feature(env, ARM_FEATURE_V7)) {
7241 switch (regime_sctlr(env, mmu_idx) & (SCTLR_S | SCTLR_R)) {
7243 return is_user ? 0 : PAGE_READ;
7250 return is_user ? 0 : PAGE_READ | PAGE_WRITE;
7255 return PAGE_READ | PAGE_WRITE;
7258 return PAGE_READ | PAGE_WRITE;
7259 case 4: /* Reserved. */
7262 return is_user ? 0 : PAGE_READ;
7266 if (!arm_feature(env, ARM_FEATURE_V6K)) {
7271 g_assert_not_reached();
7275 /* Translate section/page access permissions to page
7276 * R/W protection flags.
7278 * @ap: The 2-bit simple AP (AP[2:1])
7279 * @is_user: TRUE if accessing from PL0
7281 static inline int simple_ap_to_rw_prot_is_user(int ap, bool is_user)
7285 return is_user ? 0 : PAGE_READ | PAGE_WRITE;
7287 return PAGE_READ | PAGE_WRITE;
7289 return is_user ? 0 : PAGE_READ;
7293 g_assert_not_reached();
7298 simple_ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx, int ap)
7300 return simple_ap_to_rw_prot_is_user(ap, regime_is_user(env, mmu_idx));
7303 /* Translate S2 section/page access permissions to protection flags
7306 * @s2ap: The 2-bit stage2 access permissions (S2AP)
7307 * @xn: XN (execute-never) bit
7309 static int get_S2prot(CPUARMState *env, int s2ap, int xn)
7320 if (arm_el_is_aa64(env, 2) || prot & PAGE_READ) {
7327 /* Translate section/page access permissions to protection flags
7330 * @mmu_idx: MMU index indicating required translation regime
7331 * @is_aa64: TRUE if AArch64
7332 * @ap: The 2-bit simple AP (AP[2:1])
7333 * @ns: NS (non-secure) bit
7334 * @xn: XN (execute-never) bit
7335 * @pxn: PXN (privileged execute-never) bit
7337 static int get_S1prot(CPUARMState *env, ARMMMUIdx mmu_idx, bool is_aa64,
7338 int ap, int ns, int xn, int pxn)
7340 bool is_user = regime_is_user(env, mmu_idx);
7341 int prot_rw, user_rw;
7345 assert(mmu_idx != ARMMMUIdx_S2NS);
7347 user_rw = simple_ap_to_rw_prot_is_user(ap, true);
7351 prot_rw = simple_ap_to_rw_prot_is_user(ap, false);
7354 if (ns && arm_is_secure(env) && (env->cp15.scr_el3 & SCR_SIF)) {
7358 /* TODO have_wxn should be replaced with
7359 * ARM_FEATURE_V8 || (ARM_FEATURE_V7 && ARM_FEATURE_EL2)
7360 * when ARM_FEATURE_EL2 starts getting set. For now we assume all LPAE
7361 * compatible processors have EL2, which is required for [U]WXN.
7363 have_wxn = arm_feature(env, ARM_FEATURE_LPAE);
7366 wxn = regime_sctlr(env, mmu_idx) & SCTLR_WXN;
7370 switch (regime_el(env, mmu_idx)) {
7373 xn = pxn || (user_rw & PAGE_WRITE);
7380 } else if (arm_feature(env, ARM_FEATURE_V7)) {
7381 switch (regime_el(env, mmu_idx)) {
7385 xn = xn || !(user_rw & PAGE_READ);
7389 uwxn = regime_sctlr(env, mmu_idx) & SCTLR_UWXN;
7391 xn = xn || !(prot_rw & PAGE_READ) || pxn ||
7392 (uwxn && (user_rw & PAGE_WRITE));
7402 if (xn || (wxn && (prot_rw & PAGE_WRITE))) {
7405 return prot_rw | PAGE_EXEC;
7408 static bool get_level1_table_address(CPUARMState *env, ARMMMUIdx mmu_idx,
7409 uint32_t *table, uint32_t address)
7411 /* Note that we can only get here for an AArch32 PL0/PL1 lookup */
7412 TCR *tcr = regime_tcr(env, mmu_idx);
7414 if (address & tcr->mask) {
7415 if (tcr->raw_tcr & TTBCR_PD1) {
7416 /* Translation table walk disabled for TTBR1 */
7419 *table = regime_ttbr(env, mmu_idx, 1) & 0xffffc000;
7421 if (tcr->raw_tcr & TTBCR_PD0) {
7422 /* Translation table walk disabled for TTBR0 */
7425 *table = regime_ttbr(env, mmu_idx, 0) & tcr->base_mask;
7427 *table |= (address >> 18) & 0x3ffc;
7431 /* Translate a S1 pagetable walk through S2 if needed. */
7432 static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx,
7433 hwaddr addr, MemTxAttrs txattrs,
7435 ARMMMUFaultInfo *fi)
7437 if ((mmu_idx == ARMMMUIdx_S1NSE0 || mmu_idx == ARMMMUIdx_S1NSE1) &&
7438 !regime_translation_disabled(env, ARMMMUIdx_S2NS)) {
7439 target_ulong s2size;
7444 ret = get_phys_addr_lpae(env, addr, 0, ARMMMUIdx_S2NS, &s2pa,
7445 &txattrs, &s2prot, &s2size, fsr, fi);
7457 /* All loads done in the course of a page table walk go through here.
7458 * TODO: rather than ignoring errors from physical memory reads (which
7459 * are external aborts in ARM terminology) we should propagate this
7460 * error out so that we can turn it into a Data Abort if this walk
7461 * was being done for a CPU load/store or an address translation instruction
7462 * (but not if it was for a debug access).
7464 static uint32_t arm_ldl_ptw(CPUState *cs, hwaddr addr, bool is_secure,
7465 ARMMMUIdx mmu_idx, uint32_t *fsr,
7466 ARMMMUFaultInfo *fi)
7468 ARMCPU *cpu = ARM_CPU(cs);
7469 CPUARMState *env = &cpu->env;
7470 MemTxAttrs attrs = {};
7473 attrs.secure = is_secure;
7474 as = arm_addressspace(cs, attrs);
7475 addr = S1_ptw_translate(env, mmu_idx, addr, attrs, fsr, fi);
7479 if (regime_translation_big_endian(env, mmu_idx)) {
7480 return address_space_ldl_be(as, addr, attrs, NULL);
7482 return address_space_ldl_le(as, addr, attrs, NULL);
7486 static uint64_t arm_ldq_ptw(CPUState *cs, hwaddr addr, bool is_secure,
7487 ARMMMUIdx mmu_idx, uint32_t *fsr,
7488 ARMMMUFaultInfo *fi)
7490 ARMCPU *cpu = ARM_CPU(cs);
7491 CPUARMState *env = &cpu->env;
7492 MemTxAttrs attrs = {};
7495 attrs.secure = is_secure;
7496 as = arm_addressspace(cs, attrs);
7497 addr = S1_ptw_translate(env, mmu_idx, addr, attrs, fsr, fi);
7501 if (regime_translation_big_endian(env, mmu_idx)) {
7502 return address_space_ldq_be(as, addr, attrs, NULL);
7504 return address_space_ldq_le(as, addr, attrs, NULL);
7508 static bool get_phys_addr_v5(CPUARMState *env, uint32_t address,
7509 MMUAccessType access_type, ARMMMUIdx mmu_idx,
7510 hwaddr *phys_ptr, int *prot,
7511 target_ulong *page_size, uint32_t *fsr,
7512 ARMMMUFaultInfo *fi)
7514 CPUState *cs = CPU(arm_env_get_cpu(env));
7525 /* Pagetable walk. */
7526 /* Lookup l1 descriptor. */
7527 if (!get_level1_table_address(env, mmu_idx, &table, address)) {
7528 /* Section translation fault if page walk is disabled by PD0 or PD1 */
7532 desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx),
7535 domain = (desc >> 5) & 0x0f;
7536 if (regime_el(env, mmu_idx) == 1) {
7537 dacr = env->cp15.dacr_ns;
7539 dacr = env->cp15.dacr_s;
7541 domain_prot = (dacr >> (domain * 2)) & 3;
7543 /* Section translation fault. */
7547 if (domain_prot == 0 || domain_prot == 2) {
7549 code = 9; /* Section domain fault. */
7551 code = 11; /* Page domain fault. */
7556 phys_addr = (desc & 0xfff00000) | (address & 0x000fffff);
7557 ap = (desc >> 10) & 3;
7559 *page_size = 1024 * 1024;
7561 /* Lookup l2 entry. */
7563 /* Coarse pagetable. */
7564 table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc);
7566 /* Fine pagetable. */
7567 table = (desc & 0xfffff000) | ((address >> 8) & 0xffc);
7569 desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx),
7572 case 0: /* Page translation fault. */
7575 case 1: /* 64k page. */
7576 phys_addr = (desc & 0xffff0000) | (address & 0xffff);
7577 ap = (desc >> (4 + ((address >> 13) & 6))) & 3;
7578 *page_size = 0x10000;
7580 case 2: /* 4k page. */
7581 phys_addr = (desc & 0xfffff000) | (address & 0xfff);
7582 ap = (desc >> (4 + ((address >> 9) & 6))) & 3;
7583 *page_size = 0x1000;
7585 case 3: /* 1k page, or ARMv6/XScale "extended small (4k) page" */
7587 /* ARMv6/XScale extended small page format */
7588 if (arm_feature(env, ARM_FEATURE_XSCALE)
7589 || arm_feature(env, ARM_FEATURE_V6)) {
7590 phys_addr = (desc & 0xfffff000) | (address & 0xfff);
7591 *page_size = 0x1000;
7593 /* UNPREDICTABLE in ARMv5; we choose to take a
7594 * page translation fault.
7600 phys_addr = (desc & 0xfffffc00) | (address & 0x3ff);
7603 ap = (desc >> 4) & 3;
7606 /* Never happens, but compiler isn't smart enough to tell. */
7611 *prot = ap_to_rw_prot(env, mmu_idx, ap, domain_prot);
7612 *prot |= *prot ? PAGE_EXEC : 0;
7613 if (!(*prot & (1 << access_type))) {
7614 /* Access permission fault. */
7617 *phys_ptr = phys_addr;
7620 *fsr = code | (domain << 4);
7624 static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
7625 MMUAccessType access_type, ARMMMUIdx mmu_idx,
7626 hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot,
7627 target_ulong *page_size, uint32_t *fsr,
7628 ARMMMUFaultInfo *fi)
7630 CPUState *cs = CPU(arm_env_get_cpu(env));
7644 /* Pagetable walk. */
7645 /* Lookup l1 descriptor. */
7646 if (!get_level1_table_address(env, mmu_idx, &table, address)) {
7647 /* Section translation fault if page walk is disabled by PD0 or PD1 */
7651 desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx),
7654 if (type == 0 || (type == 3 && !arm_feature(env, ARM_FEATURE_PXN))) {
7655 /* Section translation fault, or attempt to use the encoding
7656 * which is Reserved on implementations without PXN.
7661 if ((type == 1) || !(desc & (1 << 18))) {
7662 /* Page or Section. */
7663 domain = (desc >> 5) & 0x0f;
7665 if (regime_el(env, mmu_idx) == 1) {
7666 dacr = env->cp15.dacr_ns;
7668 dacr = env->cp15.dacr_s;
7670 domain_prot = (dacr >> (domain * 2)) & 3;
7671 if (domain_prot == 0 || domain_prot == 2) {
7673 code = 9; /* Section domain fault. */
7675 code = 11; /* Page domain fault. */
7680 if (desc & (1 << 18)) {
7682 phys_addr = (desc & 0xff000000) | (address & 0x00ffffff);
7683 phys_addr |= (uint64_t)extract32(desc, 20, 4) << 32;
7684 phys_addr |= (uint64_t)extract32(desc, 5, 4) << 36;
7685 *page_size = 0x1000000;
7688 phys_addr = (desc & 0xfff00000) | (address & 0x000fffff);
7689 *page_size = 0x100000;
7691 ap = ((desc >> 10) & 3) | ((desc >> 13) & 4);
7692 xn = desc & (1 << 4);
7695 ns = extract32(desc, 19, 1);
7697 if (arm_feature(env, ARM_FEATURE_PXN)) {
7698 pxn = (desc >> 2) & 1;
7700 ns = extract32(desc, 3, 1);
7701 /* Lookup l2 entry. */
7702 table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc);
7703 desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx),
7705 ap = ((desc >> 4) & 3) | ((desc >> 7) & 4);
7707 case 0: /* Page translation fault. */
7710 case 1: /* 64k page. */
7711 phys_addr = (desc & 0xffff0000) | (address & 0xffff);
7712 xn = desc & (1 << 15);
7713 *page_size = 0x10000;
7715 case 2: case 3: /* 4k page. */
7716 phys_addr = (desc & 0xfffff000) | (address & 0xfff);
7718 *page_size = 0x1000;
7721 /* Never happens, but compiler isn't smart enough to tell. */
7726 if (domain_prot == 3) {
7727 *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
7729 if (pxn && !regime_is_user(env, mmu_idx)) {
7732 if (xn && access_type == MMU_INST_FETCH)
7735 if (arm_feature(env, ARM_FEATURE_V6K) &&
7736 (regime_sctlr(env, mmu_idx) & SCTLR_AFE)) {
7737 /* The simplified model uses AP[0] as an access control bit. */
7738 if ((ap & 1) == 0) {
7739 /* Access flag fault. */
7740 code = (code == 15) ? 6 : 3;
7743 *prot = simple_ap_to_rw_prot(env, mmu_idx, ap >> 1);
7745 *prot = ap_to_rw_prot(env, mmu_idx, ap, domain_prot);
7750 if (!(*prot & (1 << access_type))) {
7751 /* Access permission fault. */
7756 /* The NS bit will (as required by the architecture) have no effect if
7757 * the CPU doesn't support TZ or this is a non-secure translation
7758 * regime, because the attribute will already be non-secure.
7760 attrs->secure = false;
7762 *phys_ptr = phys_addr;
7765 *fsr = code | (domain << 4);
7769 /* Fault type for long-descriptor MMU fault reporting; this corresponds
7770 * to bits [5..2] in the STATUS field in long-format DFSR/IFSR.
7773 translation_fault = 1,
7775 permission_fault = 3,
7779 * check_s2_mmu_setup
7781 * @is_aa64: True if the translation regime is in AArch64 state
7782 * @startlevel: Suggested starting level
7783 * @inputsize: Bitsize of IPAs
7784 * @stride: Page-table stride (See the ARM ARM)
7786 * Returns true if the suggested S2 translation parameters are OK and
7789 static bool check_s2_mmu_setup(ARMCPU *cpu, bool is_aa64, int level,
7790 int inputsize, int stride)
7792 const int grainsize = stride + 3;
7795 /* Negative levels are never allowed. */
7800 startsizecheck = inputsize - ((3 - level) * stride + grainsize);
7801 if (startsizecheck < 1 || startsizecheck > stride + 4) {
7806 CPUARMState *env = &cpu->env;
7807 unsigned int pamax = arm_pamax(cpu);
7810 case 13: /* 64KB Pages. */
7811 if (level == 0 || (level == 1 && pamax <= 42)) {
7815 case 11: /* 16KB Pages. */
7816 if (level == 0 || (level == 1 && pamax <= 40)) {
7820 case 9: /* 4KB Pages. */
7821 if (level == 0 && pamax <= 42) {
7826 g_assert_not_reached();
7829 /* Inputsize checks. */
7830 if (inputsize > pamax &&
7831 (arm_el_is_aa64(env, 1) || inputsize > 40)) {
7832 /* This is CONSTRAINED UNPREDICTABLE and we choose to fault. */
7836 /* AArch32 only supports 4KB pages. Assert on that. */
7837 assert(stride == 9);
7846 static bool get_phys_addr_lpae(CPUARMState *env, target_ulong address,
7847 MMUAccessType access_type, ARMMMUIdx mmu_idx,
7848 hwaddr *phys_ptr, MemTxAttrs *txattrs, int *prot,
7849 target_ulong *page_size_ptr, uint32_t *fsr,
7850 ARMMMUFaultInfo *fi)
7852 ARMCPU *cpu = arm_env_get_cpu(env);
7853 CPUState *cs = CPU(cpu);
7854 /* Read an LPAE long-descriptor translation table. */
7855 MMUFaultType fault_type = translation_fault;
7862 hwaddr descaddr, indexmask, indexmask_grainsize;
7863 uint32_t tableattrs;
7864 target_ulong page_size;
7870 TCR *tcr = regime_tcr(env, mmu_idx);
7871 int ap, ns, xn, pxn;
7872 uint32_t el = regime_el(env, mmu_idx);
7873 bool ttbr1_valid = true;
7874 uint64_t descaddrmask;
7875 bool aarch64 = arm_el_is_aa64(env, el);
7878 * This code does not handle the different format TCR for VTCR_EL2.
7879 * This code also does not support shareability levels.
7880 * Attribute and permission bit handling should also be checked when adding
7881 * support for those page table walks.
7887 if (mmu_idx != ARMMMUIdx_S2NS) {
7888 tbi = extract64(tcr->raw_tcr, 20, 1);
7891 if (extract64(address, 55, 1)) {
7892 tbi = extract64(tcr->raw_tcr, 38, 1);
7894 tbi = extract64(tcr->raw_tcr, 37, 1);
7899 /* If we are in 64-bit EL2 or EL3 then there is no TTBR1, so mark it
7903 ttbr1_valid = false;
7908 /* There is no TTBR1 for EL2 */
7910 ttbr1_valid = false;
7914 /* Determine whether this address is in the region controlled by
7915 * TTBR0 or TTBR1 (or if it is in neither region and should fault).
7916 * This is a Non-secure PL0/1 stage 1 translation, so controlled by
7917 * TTBCR/TTBR0/TTBR1 in accordance with ARM ARM DDI0406C table B-32:
7920 /* AArch64 translation. */
7921 t0sz = extract32(tcr->raw_tcr, 0, 6);
7922 t0sz = MIN(t0sz, 39);
7923 t0sz = MAX(t0sz, 16);
7924 } else if (mmu_idx != ARMMMUIdx_S2NS) {
7925 /* AArch32 stage 1 translation. */
7926 t0sz = extract32(tcr->raw_tcr, 0, 3);
7928 /* AArch32 stage 2 translation. */
7929 bool sext = extract32(tcr->raw_tcr, 4, 1);
7930 bool sign = extract32(tcr->raw_tcr, 3, 1);
7931 /* Address size is 40-bit for a stage 2 translation,
7932 * and t0sz can be negative (from -8 to 7),
7933 * so we need to adjust it to use the TTBR selecting logic below.
7936 t0sz = sextract32(tcr->raw_tcr, 0, 4) + 8;
7938 /* If the sign-extend bit is not the same as t0sz[3], the result
7939 * is unpredictable. Flag this as a guest error. */
7941 qemu_log_mask(LOG_GUEST_ERROR,
7942 "AArch32: VTCR.S / VTCR.T0SZ[3] mismatch\n");
7945 t1sz = extract32(tcr->raw_tcr, 16, 6);
7947 t1sz = MIN(t1sz, 39);
7948 t1sz = MAX(t1sz, 16);
7950 if (t0sz && !extract64(address, addrsize - t0sz, t0sz - tbi)) {
7951 /* there is a ttbr0 region and we are in it (high bits all zero) */
7953 } else if (ttbr1_valid && t1sz &&
7954 !extract64(~address, addrsize - t1sz, t1sz - tbi)) {
7955 /* there is a ttbr1 region and we are in it (high bits all one) */
7958 /* ttbr0 region is "everything not in the ttbr1 region" */
7960 } else if (!t1sz && ttbr1_valid) {
7961 /* ttbr1 region is "everything not in the ttbr0 region" */
7964 /* in the gap between the two regions, this is a Translation fault */
7965 fault_type = translation_fault;
7969 /* Note that QEMU ignores shareability and cacheability attributes,
7970 * so we don't need to do anything with the SH, ORGN, IRGN fields
7971 * in the TTBCR. Similarly, TTBCR:A1 selects whether we get the
7972 * ASID from TTBR0 or TTBR1, but QEMU's TLB doesn't currently
7973 * implement any ASID-like capability so we can ignore it (instead
7974 * we will always flush the TLB any time the ASID is changed).
7976 if (ttbr_select == 0) {
7977 ttbr = regime_ttbr(env, mmu_idx, 0);
7979 epd = extract32(tcr->raw_tcr, 7, 1);
7981 inputsize = addrsize - t0sz;
7983 tg = extract32(tcr->raw_tcr, 14, 2);
7984 if (tg == 1) { /* 64KB pages */
7987 if (tg == 2) { /* 16KB pages */
7991 /* We should only be here if TTBR1 is valid */
7992 assert(ttbr1_valid);
7994 ttbr = regime_ttbr(env, mmu_idx, 1);
7995 epd = extract32(tcr->raw_tcr, 23, 1);
7996 inputsize = addrsize - t1sz;
7998 tg = extract32(tcr->raw_tcr, 30, 2);
7999 if (tg == 3) { /* 64KB pages */
8002 if (tg == 1) { /* 16KB pages */
8007 /* Here we should have set up all the parameters for the translation:
8008 * inputsize, ttbr, epd, stride, tbi
8012 /* Translation table walk disabled => Translation fault on TLB miss
8013 * Note: This is always 0 on 64-bit EL2 and EL3.
8018 if (mmu_idx != ARMMMUIdx_S2NS) {
8019 /* The starting level depends on the virtual address size (which can
8020 * be up to 48 bits) and the translation granule size. It indicates
8021 * the number of strides (stride bits at a time) needed to
8022 * consume the bits of the input address. In the pseudocode this is:
8023 * level = 4 - RoundUp((inputsize - grainsize) / stride)
8024 * where their 'inputsize' is our 'inputsize', 'grainsize' is
8025 * our 'stride + 3' and 'stride' is our 'stride'.
8026 * Applying the usual "rounded up m/n is (m+n-1)/n" and simplifying:
8027 * = 4 - (inputsize - stride - 3 + stride - 1) / stride
8028 * = 4 - (inputsize - 4) / stride;
8030 level = 4 - (inputsize - 4) / stride;
8032 /* For stage 2 translations the starting level is specified by the
8033 * VTCR_EL2.SL0 field (whose interpretation depends on the page size)
8035 uint32_t sl0 = extract32(tcr->raw_tcr, 6, 2);
8036 uint32_t startlevel;
8039 if (!aarch64 || stride == 9) {
8040 /* AArch32 or 4KB pages */
8041 startlevel = 2 - sl0;
8043 /* 16KB or 64KB pages */
8044 startlevel = 3 - sl0;
8047 /* Check that the starting level is valid. */
8048 ok = check_s2_mmu_setup(cpu, aarch64, startlevel,
8051 fault_type = translation_fault;
8057 indexmask_grainsize = (1ULL << (stride + 3)) - 1;
8058 indexmask = (1ULL << (inputsize - (stride * (4 - level)))) - 1;
8060 /* Now we can extract the actual base address from the TTBR */
8061 descaddr = extract64(ttbr, 0, 48);
8062 descaddr &= ~indexmask;
8064 /* The address field in the descriptor goes up to bit 39 for ARMv7
8065 * but up to bit 47 for ARMv8, but we use the descaddrmask
8066 * up to bit 39 for AArch32, because we don't need other bits in that case
8067 * to construct next descriptor address (anyway they should be all zeroes).
8069 descaddrmask = ((1ull << (aarch64 ? 48 : 40)) - 1) &
8070 ~indexmask_grainsize;
8072 /* Secure accesses start with the page table in secure memory and
8073 * can be downgraded to non-secure at any step. Non-secure accesses
8074 * remain non-secure. We implement this by just ORing in the NSTable/NS
8075 * bits at each step.
8077 tableattrs = regime_is_secure(env, mmu_idx) ? 0 : (1 << 4);
8079 uint64_t descriptor;
8082 descaddr |= (address >> (stride * (4 - level))) & indexmask;
8084 nstable = extract32(tableattrs, 4, 1);
8085 descriptor = arm_ldq_ptw(cs, descaddr, !nstable, mmu_idx, fsr, fi);
8090 if (!(descriptor & 1) ||
8091 (!(descriptor & 2) && (level == 3))) {
8092 /* Invalid, or the Reserved level 3 encoding */
8095 descaddr = descriptor & descaddrmask;
8097 if ((descriptor & 2) && (level < 3)) {
8098 /* Table entry. The top five bits are attributes which may
8099 * propagate down through lower levels of the table (and
8100 * which are all arranged so that 0 means "no effect", so
8101 * we can gather them up by ORing in the bits at each level).
8103 tableattrs |= extract64(descriptor, 59, 5);
8105 indexmask = indexmask_grainsize;
8108 /* Block entry at level 1 or 2, or page entry at level 3.
8109 * These are basically the same thing, although the number
8110 * of bits we pull in from the vaddr varies.
8112 page_size = (1ULL << ((stride * (4 - level)) + 3));
8113 descaddr |= (address & (page_size - 1));
8114 /* Extract attributes from the descriptor */
8115 attrs = extract64(descriptor, 2, 10)
8116 | (extract64(descriptor, 52, 12) << 10);
8118 if (mmu_idx == ARMMMUIdx_S2NS) {
8119 /* Stage 2 table descriptors do not include any attribute fields */
8122 /* Merge in attributes from table descriptors */
8123 attrs |= extract32(tableattrs, 0, 2) << 11; /* XN, PXN */
8124 attrs |= extract32(tableattrs, 3, 1) << 5; /* APTable[1] => AP[2] */
8125 /* The sense of AP[1] vs APTable[0] is reversed, as APTable[0] == 1
8126 * means "force PL1 access only", which means forcing AP[1] to 0.
8128 if (extract32(tableattrs, 2, 1)) {
8131 attrs |= nstable << 3; /* NS */
8134 /* Here descaddr is the final physical address, and attributes
8137 fault_type = access_fault;
8138 if ((attrs & (1 << 8)) == 0) {
8143 ap = extract32(attrs, 4, 2);
8144 xn = extract32(attrs, 12, 1);
8146 if (mmu_idx == ARMMMUIdx_S2NS) {
8148 *prot = get_S2prot(env, ap, xn);
8150 ns = extract32(attrs, 3, 1);
8151 pxn = extract32(attrs, 11, 1);
8152 *prot = get_S1prot(env, mmu_idx, aarch64, ap, ns, xn, pxn);
8155 fault_type = permission_fault;
8156 if (!(*prot & (1 << access_type))) {
8161 /* The NS bit will (as required by the architecture) have no effect if
8162 * the CPU doesn't support TZ or this is a non-secure translation
8163 * regime, because the attribute will already be non-secure.
8165 txattrs->secure = false;
8167 *phys_ptr = descaddr;
8168 *page_size_ptr = page_size;
8172 /* Long-descriptor format IFSR/DFSR value */
8173 *fsr = (1 << 9) | (fault_type << 2) | level;
8174 /* Tag the error as S2 for failed S1 PTW at S2 or ordinary S2. */
8175 fi->stage2 = fi->s1ptw || (mmu_idx == ARMMMUIdx_S2NS);
8179 static inline void get_phys_addr_pmsav7_default(CPUARMState *env,
8181 int32_t address, int *prot)
8183 if (!arm_feature(env, ARM_FEATURE_M)) {
8184 *prot = PAGE_READ | PAGE_WRITE;
8186 case 0xF0000000 ... 0xFFFFFFFF:
8187 if (regime_sctlr(env, mmu_idx) & SCTLR_V) {
8188 /* hivecs execing is ok */
8192 case 0x00000000 ... 0x7FFFFFFF:
8197 /* Default system address map for M profile cores.
8198 * The architecture specifies which regions are execute-never;
8199 * at the MPU level no other checks are defined.
8202 case 0x00000000 ... 0x1fffffff: /* ROM */
8203 case 0x20000000 ... 0x3fffffff: /* SRAM */
8204 case 0x60000000 ... 0x7fffffff: /* RAM */
8205 case 0x80000000 ... 0x9fffffff: /* RAM */
8206 *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
8208 case 0x40000000 ... 0x5fffffff: /* Peripheral */
8209 case 0xa0000000 ... 0xbfffffff: /* Device */
8210 case 0xc0000000 ... 0xdfffffff: /* Device */
8211 case 0xe0000000 ... 0xffffffff: /* System */
8212 *prot = PAGE_READ | PAGE_WRITE;
8215 g_assert_not_reached();
8220 static bool pmsav7_use_background_region(ARMCPU *cpu,
8221 ARMMMUIdx mmu_idx, bool is_user)
8223 /* Return true if we should use the default memory map as a
8224 * "background" region if there are no hits against any MPU regions.
8226 CPUARMState *env = &cpu->env;
8232 if (arm_feature(env, ARM_FEATURE_M)) {
8233 return env->v7m.mpu_ctrl & R_V7M_MPU_CTRL_PRIVDEFENA_MASK;
8235 return regime_sctlr(env, mmu_idx) & SCTLR_BR;
8239 static inline bool m_is_ppb_region(CPUARMState *env, uint32_t address)
8241 /* True if address is in the M profile PPB region 0xe0000000 - 0xe00fffff */
8242 return arm_feature(env, ARM_FEATURE_M) &&
8243 extract32(address, 20, 12) == 0xe00;
8246 static inline bool m_is_system_region(CPUARMState *env, uint32_t address)
8248 /* True if address is in the M profile system region
8249 * 0xe0000000 - 0xffffffff
8251 return arm_feature(env, ARM_FEATURE_M) && extract32(address, 29, 3) == 0x7;
8254 static bool get_phys_addr_pmsav7(CPUARMState *env, uint32_t address,
8255 MMUAccessType access_type, ARMMMUIdx mmu_idx,
8256 hwaddr *phys_ptr, int *prot, uint32_t *fsr)
8258 ARMCPU *cpu = arm_env_get_cpu(env);
8260 bool is_user = regime_is_user(env, mmu_idx);
8262 *phys_ptr = address;
8265 if (regime_translation_disabled(env, mmu_idx) ||
8266 m_is_ppb_region(env, address)) {
8267 /* MPU disabled or M profile PPB access: use default memory map.
8268 * The other case which uses the default memory map in the
8269 * v7M ARM ARM pseudocode is exception vector reads from the vector
8270 * table. In QEMU those accesses are done in arm_v7m_load_vector(),
8271 * which always does a direct read using address_space_ldl(), rather
8272 * than going via this function, so we don't need to check that here.
8274 get_phys_addr_pmsav7_default(env, mmu_idx, address, prot);
8275 } else { /* MPU enabled */
8276 for (n = (int)cpu->pmsav7_dregion - 1; n >= 0; n--) {
8278 uint32_t base = env->pmsav7.drbar[n];
8279 uint32_t rsize = extract32(env->pmsav7.drsr[n], 1, 5);
8283 if (!(env->pmsav7.drsr[n] & 0x1)) {
8288 qemu_log_mask(LOG_GUEST_ERROR,
8289 "DRSR[%d]: Rsize field cannot be 0\n", n);
8293 rmask = (1ull << rsize) - 1;
8296 qemu_log_mask(LOG_GUEST_ERROR,
8297 "DRBAR[%d]: 0x%" PRIx32 " misaligned "
8298 "to DRSR region size, mask = 0x%" PRIx32 "\n",
8303 if (address < base || address > base + rmask) {
8307 /* Region matched */
8309 if (rsize >= 8) { /* no subregions for regions < 256 bytes */
8311 uint32_t srdis_mask;
8313 rsize -= 3; /* sub region size (power of 2) */
8314 snd = ((address - base) >> rsize) & 0x7;
8315 srdis = extract32(env->pmsav7.drsr[n], snd + 8, 1);
8317 srdis_mask = srdis ? 0x3 : 0x0;
8318 for (i = 2; i <= 8 && rsize < TARGET_PAGE_BITS; i *= 2) {
8319 /* This will check in groups of 2, 4 and then 8, whether
8320 * the subregion bits are consistent. rsize is incremented
8321 * back up to give the region size, considering consistent
8322 * adjacent subregions as one region. Stop testing if rsize
8323 * is already big enough for an entire QEMU page.
8325 int snd_rounded = snd & ~(i - 1);
8326 uint32_t srdis_multi = extract32(env->pmsav7.drsr[n],
8327 snd_rounded + 8, i);
8328 if (srdis_mask ^ srdis_multi) {
8331 srdis_mask = (srdis_mask << i) | srdis_mask;
8335 if (rsize < TARGET_PAGE_BITS) {
8336 qemu_log_mask(LOG_UNIMP,
8337 "DRSR[%d]: No support for MPU (sub)region "
8338 "alignment of %" PRIu32 " bits. Minimum is %d\n",
8339 n, rsize, TARGET_PAGE_BITS);
8348 if (n == -1) { /* no hits */
8349 if (!pmsav7_use_background_region(cpu, mmu_idx, is_user)) {
8350 /* background fault */
8354 get_phys_addr_pmsav7_default(env, mmu_idx, address, prot);
8355 } else { /* a MPU hit! */
8356 uint32_t ap = extract32(env->pmsav7.dracr[n], 8, 3);
8357 uint32_t xn = extract32(env->pmsav7.dracr[n], 12, 1);
8359 if (m_is_system_region(env, address)) {
8360 /* System space is always execute never */
8364 if (is_user) { /* User mode AP bit decoding */
8369 break; /* no access */
8371 *prot |= PAGE_WRITE;
8375 *prot |= PAGE_READ | PAGE_EXEC;
8378 qemu_log_mask(LOG_GUEST_ERROR,
8379 "DRACR[%d]: Bad value for AP bits: 0x%"
8380 PRIx32 "\n", n, ap);
8382 } else { /* Priv. mode AP bits decoding */
8385 break; /* no access */
8389 *prot |= PAGE_WRITE;
8393 *prot |= PAGE_READ | PAGE_EXEC;
8396 qemu_log_mask(LOG_GUEST_ERROR,
8397 "DRACR[%d]: Bad value for AP bits: 0x%"
8398 PRIx32 "\n", n, ap);
8404 *prot &= ~PAGE_EXEC;
8409 *fsr = 0x00d; /* Permission fault */
8410 return !(*prot & (1 << access_type));
8413 static bool get_phys_addr_pmsav5(CPUARMState *env, uint32_t address,
8414 MMUAccessType access_type, ARMMMUIdx mmu_idx,
8415 hwaddr *phys_ptr, int *prot, uint32_t *fsr)
8420 bool is_user = regime_is_user(env, mmu_idx);
8422 if (regime_translation_disabled(env, mmu_idx)) {
8424 *phys_ptr = address;
8425 *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
8429 *phys_ptr = address;
8430 for (n = 7; n >= 0; n--) {
8431 base = env->cp15.c6_region[n];
8432 if ((base & 1) == 0) {
8435 mask = 1 << ((base >> 1) & 0x1f);
8436 /* Keep this shift separate from the above to avoid an
8437 (undefined) << 32. */
8438 mask = (mask << 1) - 1;
8439 if (((base ^ address) & ~mask) == 0) {
8448 if (access_type == MMU_INST_FETCH) {
8449 mask = env->cp15.pmsav5_insn_ap;
8451 mask = env->cp15.pmsav5_data_ap;
8453 mask = (mask >> (n * 4)) & 0xf;
8463 *prot = PAGE_READ | PAGE_WRITE;
8468 *prot |= PAGE_WRITE;
8472 *prot = PAGE_READ | PAGE_WRITE;
8485 /* Bad permission. */
8493 /* get_phys_addr - get the physical address for this virtual address
8495 * Find the physical address corresponding to the given virtual address,
8496 * by doing a translation table walk on MMU based systems or using the
8497 * MPU state on MPU based systems.
8499 * Returns false if the translation was successful. Otherwise, phys_ptr, attrs,
8500 * prot and page_size may not be filled in, and the populated fsr value provides
8501 * information on why the translation aborted, in the format of a
8502 * DFSR/IFSR fault register, with the following caveats:
8503 * * we honour the short vs long DFSR format differences.
8504 * * the WnR bit is never set (the caller must do this).
8505 * * for PSMAv5 based systems we don't bother to return a full FSR format
8509 * @address: virtual address to get physical address for
8510 * @access_type: 0 for read, 1 for write, 2 for execute
8511 * @mmu_idx: MMU index indicating required translation regime
8512 * @phys_ptr: set to the physical address corresponding to the virtual address
8513 * @attrs: set to the memory transaction attributes to use
8514 * @prot: set to the permissions for the page containing phys_ptr
8515 * @page_size: set to the size of the page containing phys_ptr
8516 * @fsr: set to the DFSR/IFSR value on failure
8518 static bool get_phys_addr(CPUARMState *env, target_ulong address,
8519 MMUAccessType access_type, ARMMMUIdx mmu_idx,
8520 hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot,
8521 target_ulong *page_size, uint32_t *fsr,
8522 ARMMMUFaultInfo *fi)
8524 if (mmu_idx == ARMMMUIdx_S12NSE0 || mmu_idx == ARMMMUIdx_S12NSE1) {
8525 /* Call ourselves recursively to do the stage 1 and then stage 2
8528 if (arm_feature(env, ARM_FEATURE_EL2)) {
8533 ret = get_phys_addr(env, address, access_type,
8534 stage_1_mmu_idx(mmu_idx), &ipa, attrs,
8535 prot, page_size, fsr, fi);
8537 /* If S1 fails or S2 is disabled, return early. */
8538 if (ret || regime_translation_disabled(env, ARMMMUIdx_S2NS)) {
8543 /* S1 is done. Now do S2 translation. */
8544 ret = get_phys_addr_lpae(env, ipa, access_type, ARMMMUIdx_S2NS,
8545 phys_ptr, attrs, &s2_prot,
8546 page_size, fsr, fi);
8548 /* Combine the S1 and S2 perms. */
8553 * For non-EL2 CPUs a stage1+stage2 translation is just stage 1.
8555 mmu_idx = stage_1_mmu_idx(mmu_idx);
8559 /* The page table entries may downgrade secure to non-secure, but
8560 * cannot upgrade an non-secure translation regime's attributes
8563 attrs->secure = regime_is_secure(env, mmu_idx);
8564 attrs->user = regime_is_user(env, mmu_idx);
8566 /* Fast Context Switch Extension. This doesn't exist at all in v8.
8567 * In v7 and earlier it affects all stage 1 translations.
8569 if (address < 0x02000000 && mmu_idx != ARMMMUIdx_S2NS
8570 && !arm_feature(env, ARM_FEATURE_V8)) {
8571 if (regime_el(env, mmu_idx) == 3) {
8572 address += env->cp15.fcseidr_s;
8574 address += env->cp15.fcseidr_ns;
8578 if (arm_feature(env, ARM_FEATURE_PMSA)) {
8580 *page_size = TARGET_PAGE_SIZE;
8582 if (arm_feature(env, ARM_FEATURE_V7)) {
8584 ret = get_phys_addr_pmsav7(env, address, access_type, mmu_idx,
8585 phys_ptr, prot, fsr);
8588 ret = get_phys_addr_pmsav5(env, address, access_type, mmu_idx,
8589 phys_ptr, prot, fsr);
8591 qemu_log_mask(CPU_LOG_MMU, "PMSA MPU lookup for %s at 0x%08" PRIx32
8592 " mmu_idx %u -> %s (prot %c%c%c)\n",
8593 access_type == MMU_DATA_LOAD ? "reading" :
8594 (access_type == MMU_DATA_STORE ? "writing" : "execute"),
8595 (uint32_t)address, mmu_idx,
8596 ret ? "Miss" : "Hit",
8597 *prot & PAGE_READ ? 'r' : '-',
8598 *prot & PAGE_WRITE ? 'w' : '-',
8599 *prot & PAGE_EXEC ? 'x' : '-');
8604 /* Definitely a real MMU, not an MPU */
8606 if (regime_translation_disabled(env, mmu_idx)) {
8608 *phys_ptr = address;
8609 *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
8610 *page_size = TARGET_PAGE_SIZE;
8614 if (regime_using_lpae_format(env, mmu_idx)) {
8615 return get_phys_addr_lpae(env, address, access_type, mmu_idx, phys_ptr,
8616 attrs, prot, page_size, fsr, fi);
8617 } else if (regime_sctlr(env, mmu_idx) & SCTLR_XP) {
8618 return get_phys_addr_v6(env, address, access_type, mmu_idx, phys_ptr,
8619 attrs, prot, page_size, fsr, fi);
8621 return get_phys_addr_v5(env, address, access_type, mmu_idx, phys_ptr,
8622 prot, page_size, fsr, fi);
8626 /* Walk the page table and (if the mapping exists) add the page
8627 * to the TLB. Return false on success, or true on failure. Populate
8628 * fsr with ARM DFSR/IFSR fault register format value on failure.
8630 bool arm_tlb_fill(CPUState *cs, vaddr address,
8631 MMUAccessType access_type, int mmu_idx, uint32_t *fsr,
8632 ARMMMUFaultInfo *fi)
8634 ARMCPU *cpu = ARM_CPU(cs);
8635 CPUARMState *env = &cpu->env;
8637 target_ulong page_size;
8640 MemTxAttrs attrs = {};
8642 ret = get_phys_addr(env, address, access_type,
8643 core_to_arm_mmu_idx(env, mmu_idx), &phys_addr,
8644 &attrs, &prot, &page_size, fsr, fi);
8646 /* Map a single [sub]page. */
8647 phys_addr &= TARGET_PAGE_MASK;
8648 address &= TARGET_PAGE_MASK;
8649 tlb_set_page_with_attrs(cs, address, phys_addr, attrs,
8650 prot, mmu_idx, page_size);
8657 hwaddr arm_cpu_get_phys_page_attrs_debug(CPUState *cs, vaddr addr,
8660 ARMCPU *cpu = ARM_CPU(cs);
8661 CPUARMState *env = &cpu->env;
8663 target_ulong page_size;
8667 ARMMMUFaultInfo fi = {};
8668 ARMMMUIdx mmu_idx = core_to_arm_mmu_idx(env, cpu_mmu_index(env, false));
8670 *attrs = (MemTxAttrs) {};
8672 ret = get_phys_addr(env, addr, 0, mmu_idx, &phys_addr,
8673 attrs, &prot, &page_size, &fsr, &fi);
8681 uint32_t HELPER(v7m_mrs)(CPUARMState *env, uint32_t reg)
8684 unsigned el = arm_current_el(env);
8686 /* First handle registers which unprivileged can read */
8689 case 0 ... 7: /* xPSR sub-fields */
8691 if ((reg & 1) && el) {
8692 mask |= XPSR_EXCP; /* IPSR (unpriv. reads as zero) */
8695 mask |= XPSR_NZCV | XPSR_Q; /* APSR */
8697 /* EPSR reads as zero */
8698 return xpsr_read(env) & mask;
8700 case 20: /* CONTROL */
8701 return env->v7m.control;
8705 return 0; /* unprivileged reads others as zero */
8710 return (env->v7m.control & R_V7M_CONTROL_SPSEL_MASK) ?
8711 env->v7m.other_sp : env->regs[13];
8713 return (env->v7m.control & R_V7M_CONTROL_SPSEL_MASK) ?
8714 env->regs[13] : env->v7m.other_sp;
8715 case 16: /* PRIMASK */
8716 return (env->daif & PSTATE_I) != 0;
8717 case 17: /* BASEPRI */
8718 case 18: /* BASEPRI_MAX */
8719 return env->v7m.basepri;
8720 case 19: /* FAULTMASK */
8721 return (env->daif & PSTATE_F) != 0;
8723 qemu_log_mask(LOG_GUEST_ERROR, "Attempt to read unknown special"
8724 " register %d\n", reg);
8729 void HELPER(v7m_msr)(CPUARMState *env, uint32_t maskreg, uint32_t val)
8731 /* We're passed bits [11..0] of the instruction; extract
8732 * SYSm and the mask bits.
8733 * Invalid combinations of SYSm and mask are UNPREDICTABLE;
8734 * we choose to treat them as if the mask bits were valid.
8735 * NB that the pseudocode 'mask' variable is bits [11..10],
8736 * whereas ours is [11..8].
8738 uint32_t mask = extract32(maskreg, 8, 4);
8739 uint32_t reg = extract32(maskreg, 0, 8);
8741 if (arm_current_el(env) == 0 && reg > 7) {
8742 /* only xPSR sub-fields may be written by unprivileged */
8747 case 0 ... 7: /* xPSR sub-fields */
8748 /* only APSR is actually writable */
8750 uint32_t apsrmask = 0;
8753 apsrmask |= XPSR_NZCV | XPSR_Q;
8755 if ((mask & 4) && arm_feature(env, ARM_FEATURE_THUMB_DSP)) {
8756 apsrmask |= XPSR_GE;
8758 xpsr_write(env, val, apsrmask);
8762 if (env->v7m.control & R_V7M_CONTROL_SPSEL_MASK) {
8763 env->v7m.other_sp = val;
8765 env->regs[13] = val;
8769 if (env->v7m.control & R_V7M_CONTROL_SPSEL_MASK) {
8770 env->regs[13] = val;
8772 env->v7m.other_sp = val;
8775 case 16: /* PRIMASK */
8777 env->daif |= PSTATE_I;
8779 env->daif &= ~PSTATE_I;
8782 case 17: /* BASEPRI */
8783 env->v7m.basepri = val & 0xff;
8785 case 18: /* BASEPRI_MAX */
8787 if (val != 0 && (val < env->v7m.basepri || env->v7m.basepri == 0))
8788 env->v7m.basepri = val;
8790 case 19: /* FAULTMASK */
8792 env->daif |= PSTATE_F;
8794 env->daif &= ~PSTATE_F;
8797 case 20: /* CONTROL */
8798 /* Writing to the SPSEL bit only has an effect if we are in
8799 * thread mode; other bits can be updated by any privileged code.
8800 * switch_v7m_sp() deals with updating the SPSEL bit in
8801 * env->v7m.control, so we only need update the others.
8803 if (env->v7m.exception == 0) {
8804 switch_v7m_sp(env, (val & R_V7M_CONTROL_SPSEL_MASK) != 0);
8806 env->v7m.control &= ~R_V7M_CONTROL_NPRIV_MASK;
8807 env->v7m.control |= val & R_V7M_CONTROL_NPRIV_MASK;
8810 qemu_log_mask(LOG_GUEST_ERROR, "Attempt to write unknown special"
8811 " register %d\n", reg);
8818 void HELPER(dc_zva)(CPUARMState *env, uint64_t vaddr_in)
8820 /* Implement DC ZVA, which zeroes a fixed-length block of memory.
8821 * Note that we do not implement the (architecturally mandated)
8822 * alignment fault for attempts to use this on Device memory
8823 * (which matches the usual QEMU behaviour of not implementing either
8824 * alignment faults or any memory attribute handling).
8827 ARMCPU *cpu = arm_env_get_cpu(env);
8828 uint64_t blocklen = 4 << cpu->dcz_blocksize;
8829 uint64_t vaddr = vaddr_in & ~(blocklen - 1);
8831 #ifndef CONFIG_USER_ONLY
8833 /* Slightly awkwardly, QEMU's TARGET_PAGE_SIZE may be less than
8834 * the block size so we might have to do more than one TLB lookup.
8835 * We know that in fact for any v8 CPU the page size is at least 4K
8836 * and the block size must be 2K or less, but TARGET_PAGE_SIZE is only
8837 * 1K as an artefact of legacy v5 subpage support being present in the
8838 * same QEMU executable.
8840 int maxidx = DIV_ROUND_UP(blocklen, TARGET_PAGE_SIZE);
8841 void *hostaddr[maxidx];
8843 unsigned mmu_idx = cpu_mmu_index(env, false);
8844 TCGMemOpIdx oi = make_memop_idx(MO_UB, mmu_idx);
8846 for (try = 0; try < 2; try++) {
8848 for (i = 0; i < maxidx; i++) {
8849 hostaddr[i] = tlb_vaddr_to_host(env,
8850 vaddr + TARGET_PAGE_SIZE * i,
8857 /* If it's all in the TLB it's fair game for just writing to;
8858 * we know we don't need to update dirty status, etc.
8860 for (i = 0; i < maxidx - 1; i++) {
8861 memset(hostaddr[i], 0, TARGET_PAGE_SIZE);
8863 memset(hostaddr[i], 0, blocklen - (i * TARGET_PAGE_SIZE));
8866 /* OK, try a store and see if we can populate the tlb. This
8867 * might cause an exception if the memory isn't writable,
8868 * in which case we will longjmp out of here. We must for
8869 * this purpose use the actual register value passed to us
8870 * so that we get the fault address right.
8872 helper_ret_stb_mmu(env, vaddr_in, 0, oi, GETPC());
8873 /* Now we can populate the other TLB entries, if any */
8874 for (i = 0; i < maxidx; i++) {
8875 uint64_t va = vaddr + TARGET_PAGE_SIZE * i;
8876 if (va != (vaddr_in & TARGET_PAGE_MASK)) {
8877 helper_ret_stb_mmu(env, va, 0, oi, GETPC());
8882 /* Slow path (probably attempt to do this to an I/O device or
8883 * similar, or clearing of a block of code we have translations
8884 * cached for). Just do a series of byte writes as the architecture
8885 * demands. It's not worth trying to use a cpu_physical_memory_map(),
8886 * memset(), unmap() sequence here because:
8887 * + we'd need to account for the blocksize being larger than a page
8888 * + the direct-RAM access case is almost always going to be dealt
8889 * with in the fastpath code above, so there's no speed benefit
8890 * + we would have to deal with the map returning NULL because the
8891 * bounce buffer was in use
8893 for (i = 0; i < blocklen; i++) {
8894 helper_ret_stb_mmu(env, vaddr + i, 0, oi, GETPC());
8898 memset(g2h(vaddr), 0, blocklen);
8902 /* Note that signed overflow is undefined in C. The following routines are
8903 careful to use unsigned types where modulo arithmetic is required.
8904 Failure to do so _will_ break on newer gcc. */
8906 /* Signed saturating arithmetic. */
8908 /* Perform 16-bit signed saturating addition. */
8909 static inline uint16_t add16_sat(uint16_t a, uint16_t b)
8914 if (((res ^ a) & 0x8000) && !((a ^ b) & 0x8000)) {
8923 /* Perform 8-bit signed saturating addition. */
8924 static inline uint8_t add8_sat(uint8_t a, uint8_t b)
8929 if (((res ^ a) & 0x80) && !((a ^ b) & 0x80)) {
8938 /* Perform 16-bit signed saturating subtraction. */
8939 static inline uint16_t sub16_sat(uint16_t a, uint16_t b)
8944 if (((res ^ a) & 0x8000) && ((a ^ b) & 0x8000)) {
8953 /* Perform 8-bit signed saturating subtraction. */
8954 static inline uint8_t sub8_sat(uint8_t a, uint8_t b)
8959 if (((res ^ a) & 0x80) && ((a ^ b) & 0x80)) {
8968 #define ADD16(a, b, n) RESULT(add16_sat(a, b), n, 16);
8969 #define SUB16(a, b, n) RESULT(sub16_sat(a, b), n, 16);
8970 #define ADD8(a, b, n) RESULT(add8_sat(a, b), n, 8);
8971 #define SUB8(a, b, n) RESULT(sub8_sat(a, b), n, 8);
8974 #include "op_addsub.h"
8976 /* Unsigned saturating arithmetic. */
8977 static inline uint16_t add16_usat(uint16_t a, uint16_t b)
8986 static inline uint16_t sub16_usat(uint16_t a, uint16_t b)
8994 static inline uint8_t add8_usat(uint8_t a, uint8_t b)
9003 static inline uint8_t sub8_usat(uint8_t a, uint8_t b)
9011 #define ADD16(a, b, n) RESULT(add16_usat(a, b), n, 16);
9012 #define SUB16(a, b, n) RESULT(sub16_usat(a, b), n, 16);
9013 #define ADD8(a, b, n) RESULT(add8_usat(a, b), n, 8);
9014 #define SUB8(a, b, n) RESULT(sub8_usat(a, b), n, 8);
9017 #include "op_addsub.h"
9019 /* Signed modulo arithmetic. */
9020 #define SARITH16(a, b, n, op) do { \
9022 sum = (int32_t)(int16_t)(a) op (int32_t)(int16_t)(b); \
9023 RESULT(sum, n, 16); \
9025 ge |= 3 << (n * 2); \
9028 #define SARITH8(a, b, n, op) do { \
9030 sum = (int32_t)(int8_t)(a) op (int32_t)(int8_t)(b); \
9031 RESULT(sum, n, 8); \
9037 #define ADD16(a, b, n) SARITH16(a, b, n, +)
9038 #define SUB16(a, b, n) SARITH16(a, b, n, -)
9039 #define ADD8(a, b, n) SARITH8(a, b, n, +)
9040 #define SUB8(a, b, n) SARITH8(a, b, n, -)
9044 #include "op_addsub.h"
9046 /* Unsigned modulo arithmetic. */
9047 #define ADD16(a, b, n) do { \
9049 sum = (uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b); \
9050 RESULT(sum, n, 16); \
9051 if ((sum >> 16) == 1) \
9052 ge |= 3 << (n * 2); \
9055 #define ADD8(a, b, n) do { \
9057 sum = (uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b); \
9058 RESULT(sum, n, 8); \
9059 if ((sum >> 8) == 1) \
9063 #define SUB16(a, b, n) do { \
9065 sum = (uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b); \
9066 RESULT(sum, n, 16); \
9067 if ((sum >> 16) == 0) \
9068 ge |= 3 << (n * 2); \
9071 #define SUB8(a, b, n) do { \
9073 sum = (uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b); \
9074 RESULT(sum, n, 8); \
9075 if ((sum >> 8) == 0) \
9082 #include "op_addsub.h"
9084 /* Halved signed arithmetic. */
9085 #define ADD16(a, b, n) \
9086 RESULT(((int32_t)(int16_t)(a) + (int32_t)(int16_t)(b)) >> 1, n, 16)
9087 #define SUB16(a, b, n) \
9088 RESULT(((int32_t)(int16_t)(a) - (int32_t)(int16_t)(b)) >> 1, n, 16)
9089 #define ADD8(a, b, n) \
9090 RESULT(((int32_t)(int8_t)(a) + (int32_t)(int8_t)(b)) >> 1, n, 8)
9091 #define SUB8(a, b, n) \
9092 RESULT(((int32_t)(int8_t)(a) - (int32_t)(int8_t)(b)) >> 1, n, 8)
9095 #include "op_addsub.h"
9097 /* Halved unsigned arithmetic. */
9098 #define ADD16(a, b, n) \
9099 RESULT(((uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b)) >> 1, n, 16)
9100 #define SUB16(a, b, n) \
9101 RESULT(((uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b)) >> 1, n, 16)
9102 #define ADD8(a, b, n) \
9103 RESULT(((uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b)) >> 1, n, 8)
9104 #define SUB8(a, b, n) \
9105 RESULT(((uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b)) >> 1, n, 8)
9108 #include "op_addsub.h"
9110 static inline uint8_t do_usad(uint8_t a, uint8_t b)
9118 /* Unsigned sum of absolute byte differences. */
9119 uint32_t HELPER(usad8)(uint32_t a, uint32_t b)
9122 sum = do_usad(a, b);
9123 sum += do_usad(a >> 8, b >> 8);
9124 sum += do_usad(a >> 16, b >>16);
9125 sum += do_usad(a >> 24, b >> 24);
9129 /* For ARMv6 SEL instruction. */
9130 uint32_t HELPER(sel_flags)(uint32_t flags, uint32_t a, uint32_t b)
9143 return (a & mask) | (b & ~mask);
9146 /* VFP support. We follow the convention used for VFP instructions:
9147 Single precision routines have a "s" suffix, double precision a
9150 /* Convert host exception flags to vfp form. */
9151 static inline int vfp_exceptbits_from_host(int host_bits)
9153 int target_bits = 0;
9155 if (host_bits & float_flag_invalid)
9157 if (host_bits & float_flag_divbyzero)
9159 if (host_bits & float_flag_overflow)
9161 if (host_bits & (float_flag_underflow | float_flag_output_denormal))
9163 if (host_bits & float_flag_inexact)
9164 target_bits |= 0x10;
9165 if (host_bits & float_flag_input_denormal)
9166 target_bits |= 0x80;
9170 uint32_t HELPER(vfp_get_fpscr)(CPUARMState *env)
9175 fpscr = (env->vfp.xregs[ARM_VFP_FPSCR] & 0xffc8ffff)
9176 | (env->vfp.vec_len << 16)
9177 | (env->vfp.vec_stride << 20);
9178 i = get_float_exception_flags(&env->vfp.fp_status);
9179 i |= get_float_exception_flags(&env->vfp.standard_fp_status);
9180 fpscr |= vfp_exceptbits_from_host(i);
9184 uint32_t vfp_get_fpscr(CPUARMState *env)
9186 return HELPER(vfp_get_fpscr)(env);
9189 /* Convert vfp exception flags to target form. */
9190 static inline int vfp_exceptbits_to_host(int target_bits)
9194 if (target_bits & 1)
9195 host_bits |= float_flag_invalid;
9196 if (target_bits & 2)
9197 host_bits |= float_flag_divbyzero;
9198 if (target_bits & 4)
9199 host_bits |= float_flag_overflow;
9200 if (target_bits & 8)
9201 host_bits |= float_flag_underflow;
9202 if (target_bits & 0x10)
9203 host_bits |= float_flag_inexact;
9204 if (target_bits & 0x80)
9205 host_bits |= float_flag_input_denormal;
9209 void HELPER(vfp_set_fpscr)(CPUARMState *env, uint32_t val)
9214 changed = env->vfp.xregs[ARM_VFP_FPSCR];
9215 env->vfp.xregs[ARM_VFP_FPSCR] = (val & 0xffc8ffff);
9216 env->vfp.vec_len = (val >> 16) & 7;
9217 env->vfp.vec_stride = (val >> 20) & 3;
9220 if (changed & (3 << 22)) {
9221 i = (val >> 22) & 3;
9223 case FPROUNDING_TIEEVEN:
9224 i = float_round_nearest_even;
9226 case FPROUNDING_POSINF:
9229 case FPROUNDING_NEGINF:
9230 i = float_round_down;
9232 case FPROUNDING_ZERO:
9233 i = float_round_to_zero;
9236 set_float_rounding_mode(i, &env->vfp.fp_status);
9238 if (changed & (1 << 24)) {
9239 set_flush_to_zero((val & (1 << 24)) != 0, &env->vfp.fp_status);
9240 set_flush_inputs_to_zero((val & (1 << 24)) != 0, &env->vfp.fp_status);
9242 if (changed & (1 << 25))
9243 set_default_nan_mode((val & (1 << 25)) != 0, &env->vfp.fp_status);
9245 i = vfp_exceptbits_to_host(val);
9246 set_float_exception_flags(i, &env->vfp.fp_status);
9247 set_float_exception_flags(0, &env->vfp.standard_fp_status);
9250 void vfp_set_fpscr(CPUARMState *env, uint32_t val)
9252 HELPER(vfp_set_fpscr)(env, val);
9255 #define VFP_HELPER(name, p) HELPER(glue(glue(vfp_,name),p))
9257 #define VFP_BINOP(name) \
9258 float32 VFP_HELPER(name, s)(float32 a, float32 b, void *fpstp) \
9260 float_status *fpst = fpstp; \
9261 return float32_ ## name(a, b, fpst); \
9263 float64 VFP_HELPER(name, d)(float64 a, float64 b, void *fpstp) \
9265 float_status *fpst = fpstp; \
9266 return float64_ ## name(a, b, fpst); \
9278 float32 VFP_HELPER(neg, s)(float32 a)
9280 return float32_chs(a);
9283 float64 VFP_HELPER(neg, d)(float64 a)
9285 return float64_chs(a);
9288 float32 VFP_HELPER(abs, s)(float32 a)
9290 return float32_abs(a);
9293 float64 VFP_HELPER(abs, d)(float64 a)
9295 return float64_abs(a);
9298 float32 VFP_HELPER(sqrt, s)(float32 a, CPUARMState *env)
9300 return float32_sqrt(a, &env->vfp.fp_status);
9303 float64 VFP_HELPER(sqrt, d)(float64 a, CPUARMState *env)
9305 return float64_sqrt(a, &env->vfp.fp_status);
9308 /* XXX: check quiet/signaling case */
9309 #define DO_VFP_cmp(p, type) \
9310 void VFP_HELPER(cmp, p)(type a, type b, CPUARMState *env) \
9313 switch(type ## _compare_quiet(a, b, &env->vfp.fp_status)) { \
9314 case 0: flags = 0x6; break; \
9315 case -1: flags = 0x8; break; \
9316 case 1: flags = 0x2; break; \
9317 default: case 2: flags = 0x3; break; \
9319 env->vfp.xregs[ARM_VFP_FPSCR] = (flags << 28) \
9320 | (env->vfp.xregs[ARM_VFP_FPSCR] & 0x0fffffff); \
9322 void VFP_HELPER(cmpe, p)(type a, type b, CPUARMState *env) \
9325 switch(type ## _compare(a, b, &env->vfp.fp_status)) { \
9326 case 0: flags = 0x6; break; \
9327 case -1: flags = 0x8; break; \
9328 case 1: flags = 0x2; break; \
9329 default: case 2: flags = 0x3; break; \
9331 env->vfp.xregs[ARM_VFP_FPSCR] = (flags << 28) \
9332 | (env->vfp.xregs[ARM_VFP_FPSCR] & 0x0fffffff); \
9334 DO_VFP_cmp(s, float32)
9335 DO_VFP_cmp(d, float64)
9338 /* Integer to float and float to integer conversions */
9340 #define CONV_ITOF(name, fsz, sign) \
9341 float##fsz HELPER(name)(uint32_t x, void *fpstp) \
9343 float_status *fpst = fpstp; \
9344 return sign##int32_to_##float##fsz((sign##int32_t)x, fpst); \
9347 #define CONV_FTOI(name, fsz, sign, round) \
9348 uint32_t HELPER(name)(float##fsz x, void *fpstp) \
9350 float_status *fpst = fpstp; \
9351 if (float##fsz##_is_any_nan(x)) { \
9352 float_raise(float_flag_invalid, fpst); \
9355 return float##fsz##_to_##sign##int32##round(x, fpst); \
9358 #define FLOAT_CONVS(name, p, fsz, sign) \
9359 CONV_ITOF(vfp_##name##to##p, fsz, sign) \
9360 CONV_FTOI(vfp_to##name##p, fsz, sign, ) \
9361 CONV_FTOI(vfp_to##name##z##p, fsz, sign, _round_to_zero)
9363 FLOAT_CONVS(si, s, 32, )
9364 FLOAT_CONVS(si, d, 64, )
9365 FLOAT_CONVS(ui, s, 32, u)
9366 FLOAT_CONVS(ui, d, 64, u)
9372 /* floating point conversion */
9373 float64 VFP_HELPER(fcvtd, s)(float32 x, CPUARMState *env)
9375 float64 r = float32_to_float64(x, &env->vfp.fp_status);
9376 /* ARM requires that S<->D conversion of any kind of NaN generates
9377 * a quiet NaN by forcing the most significant frac bit to 1.
9379 return float64_maybe_silence_nan(r, &env->vfp.fp_status);
9382 float32 VFP_HELPER(fcvts, d)(float64 x, CPUARMState *env)
9384 float32 r = float64_to_float32(x, &env->vfp.fp_status);
9385 /* ARM requires that S<->D conversion of any kind of NaN generates
9386 * a quiet NaN by forcing the most significant frac bit to 1.
9388 return float32_maybe_silence_nan(r, &env->vfp.fp_status);
9391 /* VFP3 fixed point conversion. */
9392 #define VFP_CONV_FIX_FLOAT(name, p, fsz, isz, itype) \
9393 float##fsz HELPER(vfp_##name##to##p)(uint##isz##_t x, uint32_t shift, \
9396 float_status *fpst = fpstp; \
9398 tmp = itype##_to_##float##fsz(x, fpst); \
9399 return float##fsz##_scalbn(tmp, -(int)shift, fpst); \
9402 /* Notice that we want only input-denormal exception flags from the
9403 * scalbn operation: the other possible flags (overflow+inexact if
9404 * we overflow to infinity, output-denormal) aren't correct for the
9405 * complete scale-and-convert operation.
9407 #define VFP_CONV_FLOAT_FIX_ROUND(name, p, fsz, isz, itype, round) \
9408 uint##isz##_t HELPER(vfp_to##name##p##round)(float##fsz x, \
9412 float_status *fpst = fpstp; \
9413 int old_exc_flags = get_float_exception_flags(fpst); \
9415 if (float##fsz##_is_any_nan(x)) { \
9416 float_raise(float_flag_invalid, fpst); \
9419 tmp = float##fsz##_scalbn(x, shift, fpst); \
9420 old_exc_flags |= get_float_exception_flags(fpst) \
9421 & float_flag_input_denormal; \
9422 set_float_exception_flags(old_exc_flags, fpst); \
9423 return float##fsz##_to_##itype##round(tmp, fpst); \
9426 #define VFP_CONV_FIX(name, p, fsz, isz, itype) \
9427 VFP_CONV_FIX_FLOAT(name, p, fsz, isz, itype) \
9428 VFP_CONV_FLOAT_FIX_ROUND(name, p, fsz, isz, itype, _round_to_zero) \
9429 VFP_CONV_FLOAT_FIX_ROUND(name, p, fsz, isz, itype, )
9431 #define VFP_CONV_FIX_A64(name, p, fsz, isz, itype) \
9432 VFP_CONV_FIX_FLOAT(name, p, fsz, isz, itype) \
9433 VFP_CONV_FLOAT_FIX_ROUND(name, p, fsz, isz, itype, )
9435 VFP_CONV_FIX(sh, d, 64, 64, int16)
9436 VFP_CONV_FIX(sl, d, 64, 64, int32)
9437 VFP_CONV_FIX_A64(sq, d, 64, 64, int64)
9438 VFP_CONV_FIX(uh, d, 64, 64, uint16)
9439 VFP_CONV_FIX(ul, d, 64, 64, uint32)
9440 VFP_CONV_FIX_A64(uq, d, 64, 64, uint64)
9441 VFP_CONV_FIX(sh, s, 32, 32, int16)
9442 VFP_CONV_FIX(sl, s, 32, 32, int32)
9443 VFP_CONV_FIX_A64(sq, s, 32, 64, int64)
9444 VFP_CONV_FIX(uh, s, 32, 32, uint16)
9445 VFP_CONV_FIX(ul, s, 32, 32, uint32)
9446 VFP_CONV_FIX_A64(uq, s, 32, 64, uint64)
9448 #undef VFP_CONV_FIX_FLOAT
9449 #undef VFP_CONV_FLOAT_FIX_ROUND
9451 /* Set the current fp rounding mode and return the old one.
9452 * The argument is a softfloat float_round_ value.
9454 uint32_t HELPER(set_rmode)(uint32_t rmode, CPUARMState *env)
9456 float_status *fp_status = &env->vfp.fp_status;
9458 uint32_t prev_rmode = get_float_rounding_mode(fp_status);
9459 set_float_rounding_mode(rmode, fp_status);
9464 /* Set the current fp rounding mode in the standard fp status and return
9465 * the old one. This is for NEON instructions that need to change the
9466 * rounding mode but wish to use the standard FPSCR values for everything
9467 * else. Always set the rounding mode back to the correct value after
9469 * The argument is a softfloat float_round_ value.
9471 uint32_t HELPER(set_neon_rmode)(uint32_t rmode, CPUARMState *env)
9473 float_status *fp_status = &env->vfp.standard_fp_status;
9475 uint32_t prev_rmode = get_float_rounding_mode(fp_status);
9476 set_float_rounding_mode(rmode, fp_status);
9481 /* Half precision conversions. */
9482 static float32 do_fcvt_f16_to_f32(uint32_t a, CPUARMState *env, float_status *s)
9484 int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0;
9485 float32 r = float16_to_float32(make_float16(a), ieee, s);
9487 return float32_maybe_silence_nan(r, s);
9492 static uint32_t do_fcvt_f32_to_f16(float32 a, CPUARMState *env, float_status *s)
9494 int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0;
9495 float16 r = float32_to_float16(a, ieee, s);
9497 r = float16_maybe_silence_nan(r, s);
9499 return float16_val(r);
9502 float32 HELPER(neon_fcvt_f16_to_f32)(uint32_t a, CPUARMState *env)
9504 return do_fcvt_f16_to_f32(a, env, &env->vfp.standard_fp_status);
9507 uint32_t HELPER(neon_fcvt_f32_to_f16)(float32 a, CPUARMState *env)
9509 return do_fcvt_f32_to_f16(a, env, &env->vfp.standard_fp_status);
9512 float32 HELPER(vfp_fcvt_f16_to_f32)(uint32_t a, CPUARMState *env)
9514 return do_fcvt_f16_to_f32(a, env, &env->vfp.fp_status);
9517 uint32_t HELPER(vfp_fcvt_f32_to_f16)(float32 a, CPUARMState *env)
9519 return do_fcvt_f32_to_f16(a, env, &env->vfp.fp_status);
9522 float64 HELPER(vfp_fcvt_f16_to_f64)(uint32_t a, CPUARMState *env)
9524 int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0;
9525 float64 r = float16_to_float64(make_float16(a), ieee, &env->vfp.fp_status);
9527 return float64_maybe_silence_nan(r, &env->vfp.fp_status);
9532 uint32_t HELPER(vfp_fcvt_f64_to_f16)(float64 a, CPUARMState *env)
9534 int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0;
9535 float16 r = float64_to_float16(a, ieee, &env->vfp.fp_status);
9537 r = float16_maybe_silence_nan(r, &env->vfp.fp_status);
9539 return float16_val(r);
9542 #define float32_two make_float32(0x40000000)
9543 #define float32_three make_float32(0x40400000)
9544 #define float32_one_point_five make_float32(0x3fc00000)
9546 float32 HELPER(recps_f32)(float32 a, float32 b, CPUARMState *env)
9548 float_status *s = &env->vfp.standard_fp_status;
9549 if ((float32_is_infinity(a) && float32_is_zero_or_denormal(b)) ||
9550 (float32_is_infinity(b) && float32_is_zero_or_denormal(a))) {
9551 if (!(float32_is_zero(a) || float32_is_zero(b))) {
9552 float_raise(float_flag_input_denormal, s);
9556 return float32_sub(float32_two, float32_mul(a, b, s), s);
9559 float32 HELPER(rsqrts_f32)(float32 a, float32 b, CPUARMState *env)
9561 float_status *s = &env->vfp.standard_fp_status;
9563 if ((float32_is_infinity(a) && float32_is_zero_or_denormal(b)) ||
9564 (float32_is_infinity(b) && float32_is_zero_or_denormal(a))) {
9565 if (!(float32_is_zero(a) || float32_is_zero(b))) {
9566 float_raise(float_flag_input_denormal, s);
9568 return float32_one_point_five;
9570 product = float32_mul(a, b, s);
9571 return float32_div(float32_sub(float32_three, product, s), float32_two, s);
9576 /* Constants 256 and 512 are used in some helpers; we avoid relying on
9577 * int->float conversions at run-time. */
9578 #define float64_256 make_float64(0x4070000000000000LL)
9579 #define float64_512 make_float64(0x4080000000000000LL)
9580 #define float32_maxnorm make_float32(0x7f7fffff)
9581 #define float64_maxnorm make_float64(0x7fefffffffffffffLL)
9583 /* Reciprocal functions
9585 * The algorithm that must be used to calculate the estimate
9586 * is specified by the ARM ARM, see FPRecipEstimate()
9589 static float64 recip_estimate(float64 a, float_status *real_fp_status)
9591 /* These calculations mustn't set any fp exception flags,
9592 * so we use a local copy of the fp_status.
9594 float_status dummy_status = *real_fp_status;
9595 float_status *s = &dummy_status;
9596 /* q = (int)(a * 512.0) */
9597 float64 q = float64_mul(float64_512, a, s);
9598 int64_t q_int = float64_to_int64_round_to_zero(q, s);
9600 /* r = 1.0 / (((double)q + 0.5) / 512.0) */
9601 q = int64_to_float64(q_int, s);
9602 q = float64_add(q, float64_half, s);
9603 q = float64_div(q, float64_512, s);
9604 q = float64_div(float64_one, q, s);
9606 /* s = (int)(256.0 * r + 0.5) */
9607 q = float64_mul(q, float64_256, s);
9608 q = float64_add(q, float64_half, s);
9609 q_int = float64_to_int64_round_to_zero(q, s);
9611 /* return (double)s / 256.0 */
9612 return float64_div(int64_to_float64(q_int, s), float64_256, s);
9615 /* Common wrapper to call recip_estimate */
9616 static float64 call_recip_estimate(float64 num, int off, float_status *fpst)
9618 uint64_t val64 = float64_val(num);
9619 uint64_t frac = extract64(val64, 0, 52);
9620 int64_t exp = extract64(val64, 52, 11);
9622 float64 scaled, estimate;
9624 /* Generate the scaled number for the estimate function */
9626 if (extract64(frac, 51, 1) == 0) {
9628 frac = extract64(frac, 0, 50) << 2;
9630 frac = extract64(frac, 0, 51) << 1;
9634 /* scaled = '0' : '01111111110' : fraction<51:44> : Zeros(44); */
9635 scaled = make_float64((0x3feULL << 52)
9636 | extract64(frac, 44, 8) << 44);
9638 estimate = recip_estimate(scaled, fpst);
9640 /* Build new result */
9641 val64 = float64_val(estimate);
9642 sbit = 0x8000000000000000ULL & val64;
9644 frac = extract64(val64, 0, 52);
9647 frac = 1ULL << 51 | extract64(frac, 1, 51);
9648 } else if (exp == -1) {
9649 frac = 1ULL << 50 | extract64(frac, 2, 50);
9653 return make_float64(sbit | (exp << 52) | frac);
9656 static bool round_to_inf(float_status *fpst, bool sign_bit)
9658 switch (fpst->float_rounding_mode) {
9659 case float_round_nearest_even: /* Round to Nearest */
9661 case float_round_up: /* Round to +Inf */
9663 case float_round_down: /* Round to -Inf */
9665 case float_round_to_zero: /* Round to Zero */
9669 g_assert_not_reached();
9672 float32 HELPER(recpe_f32)(float32 input, void *fpstp)
9674 float_status *fpst = fpstp;
9675 float32 f32 = float32_squash_input_denormal(input, fpst);
9676 uint32_t f32_val = float32_val(f32);
9677 uint32_t f32_sbit = 0x80000000ULL & f32_val;
9678 int32_t f32_exp = extract32(f32_val, 23, 8);
9679 uint32_t f32_frac = extract32(f32_val, 0, 23);
9685 if (float32_is_any_nan(f32)) {
9687 if (float32_is_signaling_nan(f32, fpst)) {
9688 float_raise(float_flag_invalid, fpst);
9689 nan = float32_maybe_silence_nan(f32, fpst);
9691 if (fpst->default_nan_mode) {
9692 nan = float32_default_nan(fpst);
9695 } else if (float32_is_infinity(f32)) {
9696 return float32_set_sign(float32_zero, float32_is_neg(f32));
9697 } else if (float32_is_zero(f32)) {
9698 float_raise(float_flag_divbyzero, fpst);
9699 return float32_set_sign(float32_infinity, float32_is_neg(f32));
9700 } else if ((f32_val & ~(1ULL << 31)) < (1ULL << 21)) {
9701 /* Abs(value) < 2.0^-128 */
9702 float_raise(float_flag_overflow | float_flag_inexact, fpst);
9703 if (round_to_inf(fpst, f32_sbit)) {
9704 return float32_set_sign(float32_infinity, float32_is_neg(f32));
9706 return float32_set_sign(float32_maxnorm, float32_is_neg(f32));
9708 } else if (f32_exp >= 253 && fpst->flush_to_zero) {
9709 float_raise(float_flag_underflow, fpst);
9710 return float32_set_sign(float32_zero, float32_is_neg(f32));
9714 f64 = make_float64(((int64_t)(f32_exp) << 52) | (int64_t)(f32_frac) << 29);
9715 r64 = call_recip_estimate(f64, 253, fpst);
9716 r64_val = float64_val(r64);
9717 r64_exp = extract64(r64_val, 52, 11);
9718 r64_frac = extract64(r64_val, 0, 52);
9720 /* result = sign : result_exp<7:0> : fraction<51:29>; */
9721 return make_float32(f32_sbit |
9722 (r64_exp & 0xff) << 23 |
9723 extract64(r64_frac, 29, 24));
9726 float64 HELPER(recpe_f64)(float64 input, void *fpstp)
9728 float_status *fpst = fpstp;
9729 float64 f64 = float64_squash_input_denormal(input, fpst);
9730 uint64_t f64_val = float64_val(f64);
9731 uint64_t f64_sbit = 0x8000000000000000ULL & f64_val;
9732 int64_t f64_exp = extract64(f64_val, 52, 11);
9738 /* Deal with any special cases */
9739 if (float64_is_any_nan(f64)) {
9741 if (float64_is_signaling_nan(f64, fpst)) {
9742 float_raise(float_flag_invalid, fpst);
9743 nan = float64_maybe_silence_nan(f64, fpst);
9745 if (fpst->default_nan_mode) {
9746 nan = float64_default_nan(fpst);
9749 } else if (float64_is_infinity(f64)) {
9750 return float64_set_sign(float64_zero, float64_is_neg(f64));
9751 } else if (float64_is_zero(f64)) {
9752 float_raise(float_flag_divbyzero, fpst);
9753 return float64_set_sign(float64_infinity, float64_is_neg(f64));
9754 } else if ((f64_val & ~(1ULL << 63)) < (1ULL << 50)) {
9755 /* Abs(value) < 2.0^-1024 */
9756 float_raise(float_flag_overflow | float_flag_inexact, fpst);
9757 if (round_to_inf(fpst, f64_sbit)) {
9758 return float64_set_sign(float64_infinity, float64_is_neg(f64));
9760 return float64_set_sign(float64_maxnorm, float64_is_neg(f64));
9762 } else if (f64_exp >= 2045 && fpst->flush_to_zero) {
9763 float_raise(float_flag_underflow, fpst);
9764 return float64_set_sign(float64_zero, float64_is_neg(f64));
9767 r64 = call_recip_estimate(f64, 2045, fpst);
9768 r64_val = float64_val(r64);
9769 r64_exp = extract64(r64_val, 52, 11);
9770 r64_frac = extract64(r64_val, 0, 52);
9772 /* result = sign : result_exp<10:0> : fraction<51:0> */
9773 return make_float64(f64_sbit |
9774 ((r64_exp & 0x7ff) << 52) |
9778 /* The algorithm that must be used to calculate the estimate
9779 * is specified by the ARM ARM.
9781 static float64 recip_sqrt_estimate(float64 a, float_status *real_fp_status)
9783 /* These calculations mustn't set any fp exception flags,
9784 * so we use a local copy of the fp_status.
9786 float_status dummy_status = *real_fp_status;
9787 float_status *s = &dummy_status;
9791 if (float64_lt(a, float64_half, s)) {
9792 /* range 0.25 <= a < 0.5 */
9794 /* a in units of 1/512 rounded down */
9795 /* q0 = (int)(a * 512.0); */
9796 q = float64_mul(float64_512, a, s);
9797 q_int = float64_to_int64_round_to_zero(q, s);
9799 /* reciprocal root r */
9800 /* r = 1.0 / sqrt(((double)q0 + 0.5) / 512.0); */
9801 q = int64_to_float64(q_int, s);
9802 q = float64_add(q, float64_half, s);
9803 q = float64_div(q, float64_512, s);
9804 q = float64_sqrt(q, s);
9805 q = float64_div(float64_one, q, s);
9807 /* range 0.5 <= a < 1.0 */
9809 /* a in units of 1/256 rounded down */
9810 /* q1 = (int)(a * 256.0); */
9811 q = float64_mul(float64_256, a, s);
9812 int64_t q_int = float64_to_int64_round_to_zero(q, s);
9814 /* reciprocal root r */
9815 /* r = 1.0 /sqrt(((double)q1 + 0.5) / 256); */
9816 q = int64_to_float64(q_int, s);
9817 q = float64_add(q, float64_half, s);
9818 q = float64_div(q, float64_256, s);
9819 q = float64_sqrt(q, s);
9820 q = float64_div(float64_one, q, s);
9822 /* r in units of 1/256 rounded to nearest */
9823 /* s = (int)(256.0 * r + 0.5); */
9825 q = float64_mul(q, float64_256,s );
9826 q = float64_add(q, float64_half, s);
9827 q_int = float64_to_int64_round_to_zero(q, s);
9829 /* return (double)s / 256.0;*/
9830 return float64_div(int64_to_float64(q_int, s), float64_256, s);
9833 float32 HELPER(rsqrte_f32)(float32 input, void *fpstp)
9835 float_status *s = fpstp;
9836 float32 f32 = float32_squash_input_denormal(input, s);
9837 uint32_t val = float32_val(f32);
9838 uint32_t f32_sbit = 0x80000000 & val;
9839 int32_t f32_exp = extract32(val, 23, 8);
9840 uint32_t f32_frac = extract32(val, 0, 23);
9846 if (float32_is_any_nan(f32)) {
9848 if (float32_is_signaling_nan(f32, s)) {
9849 float_raise(float_flag_invalid, s);
9850 nan = float32_maybe_silence_nan(f32, s);
9852 if (s->default_nan_mode) {
9853 nan = float32_default_nan(s);
9856 } else if (float32_is_zero(f32)) {
9857 float_raise(float_flag_divbyzero, s);
9858 return float32_set_sign(float32_infinity, float32_is_neg(f32));
9859 } else if (float32_is_neg(f32)) {
9860 float_raise(float_flag_invalid, s);
9861 return float32_default_nan(s);
9862 } else if (float32_is_infinity(f32)) {
9863 return float32_zero;
9866 /* Scale and normalize to a double-precision value between 0.25 and 1.0,
9867 * preserving the parity of the exponent. */
9869 f64_frac = ((uint64_t) f32_frac) << 29;
9871 while (extract64(f64_frac, 51, 1) == 0) {
9872 f64_frac = f64_frac << 1;
9873 f32_exp = f32_exp-1;
9875 f64_frac = extract64(f64_frac, 0, 51) << 1;
9878 if (extract64(f32_exp, 0, 1) == 0) {
9879 f64 = make_float64(((uint64_t) f32_sbit) << 32
9883 f64 = make_float64(((uint64_t) f32_sbit) << 32
9888 result_exp = (380 - f32_exp) / 2;
9890 f64 = recip_sqrt_estimate(f64, s);
9892 val64 = float64_val(f64);
9894 val = ((result_exp & 0xff) << 23)
9895 | ((val64 >> 29) & 0x7fffff);
9896 return make_float32(val);
9899 float64 HELPER(rsqrte_f64)(float64 input, void *fpstp)
9901 float_status *s = fpstp;
9902 float64 f64 = float64_squash_input_denormal(input, s);
9903 uint64_t val = float64_val(f64);
9904 uint64_t f64_sbit = 0x8000000000000000ULL & val;
9905 int64_t f64_exp = extract64(val, 52, 11);
9906 uint64_t f64_frac = extract64(val, 0, 52);
9908 uint64_t result_frac;
9910 if (float64_is_any_nan(f64)) {
9912 if (float64_is_signaling_nan(f64, s)) {
9913 float_raise(float_flag_invalid, s);
9914 nan = float64_maybe_silence_nan(f64, s);
9916 if (s->default_nan_mode) {
9917 nan = float64_default_nan(s);
9920 } else if (float64_is_zero(f64)) {
9921 float_raise(float_flag_divbyzero, s);
9922 return float64_set_sign(float64_infinity, float64_is_neg(f64));
9923 } else if (float64_is_neg(f64)) {
9924 float_raise(float_flag_invalid, s);
9925 return float64_default_nan(s);
9926 } else if (float64_is_infinity(f64)) {
9927 return float64_zero;
9930 /* Scale and normalize to a double-precision value between 0.25 and 1.0,
9931 * preserving the parity of the exponent. */
9934 while (extract64(f64_frac, 51, 1) == 0) {
9935 f64_frac = f64_frac << 1;
9936 f64_exp = f64_exp - 1;
9938 f64_frac = extract64(f64_frac, 0, 51) << 1;
9941 if (extract64(f64_exp, 0, 1) == 0) {
9942 f64 = make_float64(f64_sbit
9946 f64 = make_float64(f64_sbit
9951 result_exp = (3068 - f64_exp) / 2;
9953 f64 = recip_sqrt_estimate(f64, s);
9955 result_frac = extract64(float64_val(f64), 0, 52);
9957 return make_float64(f64_sbit |
9958 ((result_exp & 0x7ff) << 52) |
9962 uint32_t HELPER(recpe_u32)(uint32_t a, void *fpstp)
9964 float_status *s = fpstp;
9967 if ((a & 0x80000000) == 0) {
9971 f64 = make_float64((0x3feULL << 52)
9972 | ((int64_t)(a & 0x7fffffff) << 21));
9974 f64 = recip_estimate(f64, s);
9976 return 0x80000000 | ((float64_val(f64) >> 21) & 0x7fffffff);
9979 uint32_t HELPER(rsqrte_u32)(uint32_t a, void *fpstp)
9981 float_status *fpst = fpstp;
9984 if ((a & 0xc0000000) == 0) {
9988 if (a & 0x80000000) {
9989 f64 = make_float64((0x3feULL << 52)
9990 | ((uint64_t)(a & 0x7fffffff) << 21));
9991 } else { /* bits 31-30 == '01' */
9992 f64 = make_float64((0x3fdULL << 52)
9993 | ((uint64_t)(a & 0x3fffffff) << 22));
9996 f64 = recip_sqrt_estimate(f64, fpst);
9998 return 0x80000000 | ((float64_val(f64) >> 21) & 0x7fffffff);
10001 /* VFPv4 fused multiply-accumulate */
10002 float32 VFP_HELPER(muladd, s)(float32 a, float32 b, float32 c, void *fpstp)
10004 float_status *fpst = fpstp;
10005 return float32_muladd(a, b, c, 0, fpst);
10008 float64 VFP_HELPER(muladd, d)(float64 a, float64 b, float64 c, void *fpstp)
10010 float_status *fpst = fpstp;
10011 return float64_muladd(a, b, c, 0, fpst);
10014 /* ARMv8 round to integral */
10015 float32 HELPER(rints_exact)(float32 x, void *fp_status)
10017 return float32_round_to_int(x, fp_status);
10020 float64 HELPER(rintd_exact)(float64 x, void *fp_status)
10022 return float64_round_to_int(x, fp_status);
10025 float32 HELPER(rints)(float32 x, void *fp_status)
10027 int old_flags = get_float_exception_flags(fp_status), new_flags;
10030 ret = float32_round_to_int(x, fp_status);
10032 /* Suppress any inexact exceptions the conversion produced */
10033 if (!(old_flags & float_flag_inexact)) {
10034 new_flags = get_float_exception_flags(fp_status);
10035 set_float_exception_flags(new_flags & ~float_flag_inexact, fp_status);
10041 float64 HELPER(rintd)(float64 x, void *fp_status)
10043 int old_flags = get_float_exception_flags(fp_status), new_flags;
10046 ret = float64_round_to_int(x, fp_status);
10048 new_flags = get_float_exception_flags(fp_status);
10050 /* Suppress any inexact exceptions the conversion produced */
10051 if (!(old_flags & float_flag_inexact)) {
10052 new_flags = get_float_exception_flags(fp_status);
10053 set_float_exception_flags(new_flags & ~float_flag_inexact, fp_status);
10059 /* Convert ARM rounding mode to softfloat */
10060 int arm_rmode_to_sf(int rmode)
10063 case FPROUNDING_TIEAWAY:
10064 rmode = float_round_ties_away;
10066 case FPROUNDING_ODD:
10067 /* FIXME: add support for TIEAWAY and ODD */
10068 qemu_log_mask(LOG_UNIMP, "arm: unimplemented rounding mode: %d\n",
10070 case FPROUNDING_TIEEVEN:
10072 rmode = float_round_nearest_even;
10074 case FPROUNDING_POSINF:
10075 rmode = float_round_up;
10077 case FPROUNDING_NEGINF:
10078 rmode = float_round_down;
10080 case FPROUNDING_ZERO:
10081 rmode = float_round_to_zero;
10088 * The upper bytes of val (above the number specified by 'bytes') must have
10089 * been zeroed out by the caller.
10091 uint32_t HELPER(crc32)(uint32_t acc, uint32_t val, uint32_t bytes)
10095 stl_le_p(buf, val);
10097 /* zlib crc32 converts the accumulator and output to one's complement. */
10098 return crc32(acc ^ 0xffffffff, buf, bytes) ^ 0xffffffff;
10101 uint32_t HELPER(crc32c)(uint32_t acc, uint32_t val, uint32_t bytes)
10105 stl_le_p(buf, val);
10107 /* Linux crc32c converts the output to one's complement. */
10108 return crc32c(acc, buf, bytes) ^ 0xffffffff;