3 #include "exec/gdbstub.h"
4 #include "exec/helper-proto.h"
5 #include "qemu/host-utils.h"
6 #include "sysemu/arch_init.h"
7 #include "sysemu/sysemu.h"
8 #include "qemu/bitops.h"
9 #include "qemu/crc32c.h"
10 #include "exec/cpu_ldst.h"
12 #include <zlib.h> /* For crc32 */
13 #include "exec/semihost.h"
15 #ifndef CONFIG_USER_ONLY
16 static inline bool get_phys_addr(CPUARMState *env, target_ulong address,
17 int access_type, ARMMMUIdx mmu_idx,
18 hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot,
19 target_ulong *page_size, uint32_t *fsr);
21 /* Definitions for the PMCCNTR and PMCR registers */
27 static int vfp_gdb_get_reg(CPUARMState *env, uint8_t *buf, int reg)
31 /* VFP data registers are always little-endian. */
32 nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16;
34 stfq_le_p(buf, env->vfp.regs[reg]);
37 if (arm_feature(env, ARM_FEATURE_NEON)) {
38 /* Aliases for Q regs. */
41 stfq_le_p(buf, env->vfp.regs[(reg - 32) * 2]);
42 stfq_le_p(buf + 8, env->vfp.regs[(reg - 32) * 2 + 1]);
46 switch (reg - nregs) {
47 case 0: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSID]); return 4;
48 case 1: stl_p(buf, env->vfp.xregs[ARM_VFP_FPSCR]); return 4;
49 case 2: stl_p(buf, env->vfp.xregs[ARM_VFP_FPEXC]); return 4;
54 static int vfp_gdb_set_reg(CPUARMState *env, uint8_t *buf, int reg)
58 nregs = arm_feature(env, ARM_FEATURE_VFP3) ? 32 : 16;
60 env->vfp.regs[reg] = ldfq_le_p(buf);
63 if (arm_feature(env, ARM_FEATURE_NEON)) {
66 env->vfp.regs[(reg - 32) * 2] = ldfq_le_p(buf);
67 env->vfp.regs[(reg - 32) * 2 + 1] = ldfq_le_p(buf + 8);
71 switch (reg - nregs) {
72 case 0: env->vfp.xregs[ARM_VFP_FPSID] = ldl_p(buf); return 4;
73 case 1: env->vfp.xregs[ARM_VFP_FPSCR] = ldl_p(buf); return 4;
74 case 2: env->vfp.xregs[ARM_VFP_FPEXC] = ldl_p(buf) & (1 << 30); return 4;
79 static int aarch64_fpu_gdb_get_reg(CPUARMState *env, uint8_t *buf, int reg)
83 /* 128 bit FP register */
84 stfq_le_p(buf, env->vfp.regs[reg * 2]);
85 stfq_le_p(buf + 8, env->vfp.regs[reg * 2 + 1]);
89 stl_p(buf, vfp_get_fpsr(env));
93 stl_p(buf, vfp_get_fpcr(env));
100 static int aarch64_fpu_gdb_set_reg(CPUARMState *env, uint8_t *buf, int reg)
104 /* 128 bit FP register */
105 env->vfp.regs[reg * 2] = ldfq_le_p(buf);
106 env->vfp.regs[reg * 2 + 1] = ldfq_le_p(buf + 8);
110 vfp_set_fpsr(env, ldl_p(buf));
114 vfp_set_fpcr(env, ldl_p(buf));
121 static uint64_t raw_read(CPUARMState *env, const ARMCPRegInfo *ri)
123 assert(ri->fieldoffset);
124 if (cpreg_field_is_64bit(ri)) {
125 return CPREG_FIELD64(env, ri);
127 return CPREG_FIELD32(env, ri);
131 static void raw_write(CPUARMState *env, const ARMCPRegInfo *ri,
134 assert(ri->fieldoffset);
135 if (cpreg_field_is_64bit(ri)) {
136 CPREG_FIELD64(env, ri) = value;
138 CPREG_FIELD32(env, ri) = value;
142 static void *raw_ptr(CPUARMState *env, const ARMCPRegInfo *ri)
144 return (char *)env + ri->fieldoffset;
147 uint64_t read_raw_cp_reg(CPUARMState *env, const ARMCPRegInfo *ri)
149 /* Raw read of a coprocessor register (as needed for migration, etc). */
150 if (ri->type & ARM_CP_CONST) {
151 return ri->resetvalue;
152 } else if (ri->raw_readfn) {
153 return ri->raw_readfn(env, ri);
154 } else if (ri->readfn) {
155 return ri->readfn(env, ri);
157 return raw_read(env, ri);
161 static void write_raw_cp_reg(CPUARMState *env, const ARMCPRegInfo *ri,
164 /* Raw write of a coprocessor register (as needed for migration, etc).
165 * Note that constant registers are treated as write-ignored; the
166 * caller should check for success by whether a readback gives the
169 if (ri->type & ARM_CP_CONST) {
171 } else if (ri->raw_writefn) {
172 ri->raw_writefn(env, ri, v);
173 } else if (ri->writefn) {
174 ri->writefn(env, ri, v);
176 raw_write(env, ri, v);
180 static bool raw_accessors_invalid(const ARMCPRegInfo *ri)
182 /* Return true if the regdef would cause an assertion if you called
183 * read_raw_cp_reg() or write_raw_cp_reg() on it (ie if it is a
184 * program bug for it not to have the NO_RAW flag).
185 * NB that returning false here doesn't necessarily mean that calling
186 * read/write_raw_cp_reg() is safe, because we can't distinguish "has
187 * read/write access functions which are safe for raw use" from "has
188 * read/write access functions which have side effects but has forgotten
189 * to provide raw access functions".
190 * The tests here line up with the conditions in read/write_raw_cp_reg()
191 * and assertions in raw_read()/raw_write().
193 if ((ri->type & ARM_CP_CONST) ||
195 ((ri->raw_writefn || ri->writefn) && (ri->raw_readfn || ri->readfn))) {
201 bool write_cpustate_to_list(ARMCPU *cpu)
203 /* Write the coprocessor state from cpu->env to the (index,value) list. */
207 for (i = 0; i < cpu->cpreg_array_len; i++) {
208 uint32_t regidx = kvm_to_cpreg_id(cpu->cpreg_indexes[i]);
209 const ARMCPRegInfo *ri;
211 ri = get_arm_cp_reginfo(cpu->cp_regs, regidx);
216 if (ri->type & ARM_CP_NO_RAW) {
219 cpu->cpreg_values[i] = read_raw_cp_reg(&cpu->env, ri);
224 bool write_list_to_cpustate(ARMCPU *cpu)
229 for (i = 0; i < cpu->cpreg_array_len; i++) {
230 uint32_t regidx = kvm_to_cpreg_id(cpu->cpreg_indexes[i]);
231 uint64_t v = cpu->cpreg_values[i];
232 const ARMCPRegInfo *ri;
234 ri = get_arm_cp_reginfo(cpu->cp_regs, regidx);
239 if (ri->type & ARM_CP_NO_RAW) {
242 /* Write value and confirm it reads back as written
243 * (to catch read-only registers and partially read-only
244 * registers where the incoming migration value doesn't match)
246 write_raw_cp_reg(&cpu->env, ri, v);
247 if (read_raw_cp_reg(&cpu->env, ri) != v) {
254 static void add_cpreg_to_list(gpointer key, gpointer opaque)
256 ARMCPU *cpu = opaque;
258 const ARMCPRegInfo *ri;
260 regidx = *(uint32_t *)key;
261 ri = get_arm_cp_reginfo(cpu->cp_regs, regidx);
263 if (!(ri->type & (ARM_CP_NO_RAW|ARM_CP_ALIAS))) {
264 cpu->cpreg_indexes[cpu->cpreg_array_len] = cpreg_to_kvm_id(regidx);
265 /* The value array need not be initialized at this point */
266 cpu->cpreg_array_len++;
270 static void count_cpreg(gpointer key, gpointer opaque)
272 ARMCPU *cpu = opaque;
274 const ARMCPRegInfo *ri;
276 regidx = *(uint32_t *)key;
277 ri = get_arm_cp_reginfo(cpu->cp_regs, regidx);
279 if (!(ri->type & (ARM_CP_NO_RAW|ARM_CP_ALIAS))) {
280 cpu->cpreg_array_len++;
284 static gint cpreg_key_compare(gconstpointer a, gconstpointer b)
286 uint64_t aidx = cpreg_to_kvm_id(*(uint32_t *)a);
287 uint64_t bidx = cpreg_to_kvm_id(*(uint32_t *)b);
298 void init_cpreg_list(ARMCPU *cpu)
300 /* Initialise the cpreg_tuples[] array based on the cp_regs hash.
301 * Note that we require cpreg_tuples[] to be sorted by key ID.
306 keys = g_hash_table_get_keys(cpu->cp_regs);
307 keys = g_list_sort(keys, cpreg_key_compare);
309 cpu->cpreg_array_len = 0;
311 g_list_foreach(keys, count_cpreg, cpu);
313 arraylen = cpu->cpreg_array_len;
314 cpu->cpreg_indexes = g_new(uint64_t, arraylen);
315 cpu->cpreg_values = g_new(uint64_t, arraylen);
316 cpu->cpreg_vmstate_indexes = g_new(uint64_t, arraylen);
317 cpu->cpreg_vmstate_values = g_new(uint64_t, arraylen);
318 cpu->cpreg_vmstate_array_len = cpu->cpreg_array_len;
319 cpu->cpreg_array_len = 0;
321 g_list_foreach(keys, add_cpreg_to_list, cpu);
323 assert(cpu->cpreg_array_len == arraylen);
329 * Some registers are not accessible if EL3.NS=0 and EL3 is using AArch32 but
330 * they are accessible when EL3 is using AArch64 regardless of EL3.NS.
332 * access_el3_aa32ns: Used to check AArch32 register views.
333 * access_el3_aa32ns_aa64any: Used to check both AArch32/64 register views.
335 static CPAccessResult access_el3_aa32ns(CPUARMState *env,
336 const ARMCPRegInfo *ri)
338 bool secure = arm_is_secure_below_el3(env);
340 assert(!arm_el_is_aa64(env, 3));
342 return CP_ACCESS_TRAP_UNCATEGORIZED;
347 static CPAccessResult access_el3_aa32ns_aa64any(CPUARMState *env,
348 const ARMCPRegInfo *ri)
350 if (!arm_el_is_aa64(env, 3)) {
351 return access_el3_aa32ns(env, ri);
356 static void dacr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
358 ARMCPU *cpu = arm_env_get_cpu(env);
360 raw_write(env, ri, value);
361 tlb_flush(CPU(cpu), 1); /* Flush TLB as domain not tracked in TLB */
364 static void fcse_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
366 ARMCPU *cpu = arm_env_get_cpu(env);
368 if (raw_read(env, ri) != value) {
369 /* Unlike real hardware the qemu TLB uses virtual addresses,
370 * not modified virtual addresses, so this causes a TLB flush.
372 tlb_flush(CPU(cpu), 1);
373 raw_write(env, ri, value);
377 static void contextidr_write(CPUARMState *env, const ARMCPRegInfo *ri,
380 ARMCPU *cpu = arm_env_get_cpu(env);
382 if (raw_read(env, ri) != value && !arm_feature(env, ARM_FEATURE_MPU)
383 && !extended_addresses_enabled(env)) {
384 /* For VMSA (when not using the LPAE long descriptor page table
385 * format) this register includes the ASID, so do a TLB flush.
386 * For PMSA it is purely a process ID and no action is needed.
388 tlb_flush(CPU(cpu), 1);
390 raw_write(env, ri, value);
393 static void tlbiall_write(CPUARMState *env, const ARMCPRegInfo *ri,
396 /* Invalidate all (TLBIALL) */
397 ARMCPU *cpu = arm_env_get_cpu(env);
399 tlb_flush(CPU(cpu), 1);
402 static void tlbimva_write(CPUARMState *env, const ARMCPRegInfo *ri,
405 /* Invalidate single TLB entry by MVA and ASID (TLBIMVA) */
406 ARMCPU *cpu = arm_env_get_cpu(env);
408 tlb_flush_page(CPU(cpu), value & TARGET_PAGE_MASK);
411 static void tlbiasid_write(CPUARMState *env, const ARMCPRegInfo *ri,
414 /* Invalidate by ASID (TLBIASID) */
415 ARMCPU *cpu = arm_env_get_cpu(env);
417 tlb_flush(CPU(cpu), value == 0);
420 static void tlbimvaa_write(CPUARMState *env, const ARMCPRegInfo *ri,
423 /* Invalidate single entry by MVA, all ASIDs (TLBIMVAA) */
424 ARMCPU *cpu = arm_env_get_cpu(env);
426 tlb_flush_page(CPU(cpu), value & TARGET_PAGE_MASK);
429 /* IS variants of TLB operations must affect all cores */
430 static void tlbiall_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
435 CPU_FOREACH(other_cs) {
436 tlb_flush(other_cs, 1);
440 static void tlbiasid_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
445 CPU_FOREACH(other_cs) {
446 tlb_flush(other_cs, value == 0);
450 static void tlbimva_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
455 CPU_FOREACH(other_cs) {
456 tlb_flush_page(other_cs, value & TARGET_PAGE_MASK);
460 static void tlbimvaa_is_write(CPUARMState *env, const ARMCPRegInfo *ri,
465 CPU_FOREACH(other_cs) {
466 tlb_flush_page(other_cs, value & TARGET_PAGE_MASK);
470 static const ARMCPRegInfo cp_reginfo[] = {
471 /* Define the secure and non-secure FCSE identifier CP registers
472 * separately because there is no secure bank in V8 (no _EL3). This allows
473 * the secure register to be properly reset and migrated. There is also no
474 * v8 EL1 version of the register so the non-secure instance stands alone.
476 { .name = "FCSEIDR(NS)",
477 .cp = 15, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 0,
478 .access = PL1_RW, .secure = ARM_CP_SECSTATE_NS,
479 .fieldoffset = offsetof(CPUARMState, cp15.fcseidr_ns),
480 .resetvalue = 0, .writefn = fcse_write, .raw_writefn = raw_write, },
481 { .name = "FCSEIDR(S)",
482 .cp = 15, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 0,
483 .access = PL1_RW, .secure = ARM_CP_SECSTATE_S,
484 .fieldoffset = offsetof(CPUARMState, cp15.fcseidr_s),
485 .resetvalue = 0, .writefn = fcse_write, .raw_writefn = raw_write, },
486 /* Define the secure and non-secure context identifier CP registers
487 * separately because there is no secure bank in V8 (no _EL3). This allows
488 * the secure register to be properly reset and migrated. In the
489 * non-secure case, the 32-bit register will have reset and migration
490 * disabled during registration as it is handled by the 64-bit instance.
492 { .name = "CONTEXTIDR_EL1", .state = ARM_CP_STATE_BOTH,
493 .opc0 = 3, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 1,
494 .access = PL1_RW, .secure = ARM_CP_SECSTATE_NS,
495 .fieldoffset = offsetof(CPUARMState, cp15.contextidr_el[1]),
496 .resetvalue = 0, .writefn = contextidr_write, .raw_writefn = raw_write, },
497 { .name = "CONTEXTIDR(S)", .state = ARM_CP_STATE_AA32,
498 .cp = 15, .opc1 = 0, .crn = 13, .crm = 0, .opc2 = 1,
499 .access = PL1_RW, .secure = ARM_CP_SECSTATE_S,
500 .fieldoffset = offsetof(CPUARMState, cp15.contextidr_s),
501 .resetvalue = 0, .writefn = contextidr_write, .raw_writefn = raw_write, },
505 static const ARMCPRegInfo not_v8_cp_reginfo[] = {
506 /* NB: Some of these registers exist in v8 but with more precise
507 * definitions that don't use CP_ANY wildcards (mostly in v8_cp_reginfo[]).
509 /* MMU Domain access control / MPU write buffer control */
511 .cp = 15, .opc1 = CP_ANY, .crn = 3, .crm = CP_ANY, .opc2 = CP_ANY,
512 .access = PL1_RW, .resetvalue = 0,
513 .writefn = dacr_write, .raw_writefn = raw_write,
514 .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.dacr_s),
515 offsetoflow32(CPUARMState, cp15.dacr_ns) } },
516 /* ARMv7 allocates a range of implementation defined TLB LOCKDOWN regs.
517 * For v6 and v5, these mappings are overly broad.
519 { .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 0,
520 .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP },
521 { .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 1,
522 .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP },
523 { .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 4,
524 .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP },
525 { .name = "TLB_LOCKDOWN", .cp = 15, .crn = 10, .crm = 8,
526 .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_NOP },
527 /* Cache maintenance ops; some of this space may be overridden later. */
528 { .name = "CACHEMAINT", .cp = 15, .crn = 7, .crm = CP_ANY,
529 .opc1 = 0, .opc2 = CP_ANY, .access = PL1_W,
530 .type = ARM_CP_NOP | ARM_CP_OVERRIDE },
534 static const ARMCPRegInfo not_v6_cp_reginfo[] = {
535 /* Not all pre-v6 cores implemented this WFI, so this is slightly
538 { .name = "WFI_v5", .cp = 15, .crn = 7, .crm = 8, .opc1 = 0, .opc2 = 2,
539 .access = PL1_W, .type = ARM_CP_WFI },
543 static const ARMCPRegInfo not_v7_cp_reginfo[] = {
544 /* Standard v6 WFI (also used in some pre-v6 cores); not in v7 (which
545 * is UNPREDICTABLE; we choose to NOP as most implementations do).
547 { .name = "WFI_v6", .cp = 15, .crn = 7, .crm = 0, .opc1 = 0, .opc2 = 4,
548 .access = PL1_W, .type = ARM_CP_WFI },
549 /* L1 cache lockdown. Not architectural in v6 and earlier but in practice
550 * implemented in 926, 946, 1026, 1136, 1176 and 11MPCore. StrongARM and
551 * OMAPCP will override this space.
553 { .name = "DLOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 0, .opc2 = 0,
554 .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c9_data),
556 { .name = "ILOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 0, .opc2 = 1,
557 .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c9_insn),
559 /* v6 doesn't have the cache ID registers but Linux reads them anyway */
560 { .name = "DUMMY", .cp = 15, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = CP_ANY,
561 .access = PL1_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW,
563 /* We don't implement pre-v7 debug but most CPUs had at least a DBGDIDR;
564 * implementing it as RAZ means the "debug architecture version" bits
565 * will read as a reserved value, which should cause Linux to not try
566 * to use the debug hardware.
568 { .name = "DBGDIDR", .cp = 14, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 0,
569 .access = PL0_R, .type = ARM_CP_CONST, .resetvalue = 0 },
570 /* MMU TLB control. Note that the wildcarding means we cover not just
571 * the unified TLB ops but also the dside/iside/inner-shareable variants.
573 { .name = "TLBIALL", .cp = 15, .crn = 8, .crm = CP_ANY,
574 .opc1 = CP_ANY, .opc2 = 0, .access = PL1_W, .writefn = tlbiall_write,
575 .type = ARM_CP_NO_RAW },
576 { .name = "TLBIMVA", .cp = 15, .crn = 8, .crm = CP_ANY,
577 .opc1 = CP_ANY, .opc2 = 1, .access = PL1_W, .writefn = tlbimva_write,
578 .type = ARM_CP_NO_RAW },
579 { .name = "TLBIASID", .cp = 15, .crn = 8, .crm = CP_ANY,
580 .opc1 = CP_ANY, .opc2 = 2, .access = PL1_W, .writefn = tlbiasid_write,
581 .type = ARM_CP_NO_RAW },
582 { .name = "TLBIMVAA", .cp = 15, .crn = 8, .crm = CP_ANY,
583 .opc1 = CP_ANY, .opc2 = 3, .access = PL1_W, .writefn = tlbimvaa_write,
584 .type = ARM_CP_NO_RAW },
585 { .name = "PRRR", .cp = 15, .crn = 10, .crm = 2,
586 .opc1 = 0, .opc2 = 0, .access = PL1_RW, .type = ARM_CP_NOP },
587 { .name = "NMRR", .cp = 15, .crn = 10, .crm = 2,
588 .opc1 = 0, .opc2 = 1, .access = PL1_RW, .type = ARM_CP_NOP },
592 static void cpacr_write(CPUARMState *env, const ARMCPRegInfo *ri,
597 /* In ARMv8 most bits of CPACR_EL1 are RES0. */
598 if (!arm_feature(env, ARM_FEATURE_V8)) {
599 /* ARMv7 defines bits for unimplemented coprocessors as RAZ/WI.
600 * ASEDIS [31] and D32DIS [30] are both UNK/SBZP without VFP.
601 * TRCDIS [28] is RAZ/WI since we do not implement a trace macrocell.
603 if (arm_feature(env, ARM_FEATURE_VFP)) {
604 /* VFP coprocessor: cp10 & cp11 [23:20] */
605 mask |= (1 << 31) | (1 << 30) | (0xf << 20);
607 if (!arm_feature(env, ARM_FEATURE_NEON)) {
608 /* ASEDIS [31] bit is RAO/WI */
612 /* VFPv3 and upwards with NEON implement 32 double precision
613 * registers (D0-D31).
615 if (!arm_feature(env, ARM_FEATURE_NEON) ||
616 !arm_feature(env, ARM_FEATURE_VFP3)) {
617 /* D32DIS [30] is RAO/WI if D16-31 are not implemented. */
623 env->cp15.cpacr_el1 = value;
626 static CPAccessResult cpacr_access(CPUARMState *env, const ARMCPRegInfo *ri)
628 if (arm_feature(env, ARM_FEATURE_V8)) {
629 /* Check if CPACR accesses are to be trapped to EL2 */
630 if (arm_current_el(env) == 1 &&
631 (env->cp15.cptr_el[2] & CPTR_TCPAC) && !arm_is_secure(env)) {
632 return CP_ACCESS_TRAP_EL2;
633 /* Check if CPACR accesses are to be trapped to EL3 */
634 } else if (arm_current_el(env) < 3 &&
635 (env->cp15.cptr_el[3] & CPTR_TCPAC)) {
636 return CP_ACCESS_TRAP_EL3;
643 static CPAccessResult cptr_access(CPUARMState *env, const ARMCPRegInfo *ri)
645 /* Check if CPTR accesses are set to trap to EL3 */
646 if (arm_current_el(env) == 2 && (env->cp15.cptr_el[3] & CPTR_TCPAC)) {
647 return CP_ACCESS_TRAP_EL3;
653 static const ARMCPRegInfo v6_cp_reginfo[] = {
654 /* prefetch by MVA in v6, NOP in v7 */
655 { .name = "MVA_prefetch",
656 .cp = 15, .crn = 7, .crm = 13, .opc1 = 0, .opc2 = 1,
657 .access = PL1_W, .type = ARM_CP_NOP },
658 { .name = "ISB", .cp = 15, .crn = 7, .crm = 5, .opc1 = 0, .opc2 = 4,
659 .access = PL0_W, .type = ARM_CP_NOP },
660 { .name = "DSB", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 4,
661 .access = PL0_W, .type = ARM_CP_NOP },
662 { .name = "DMB", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 5,
663 .access = PL0_W, .type = ARM_CP_NOP },
664 { .name = "IFAR", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 2,
666 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ifar_s),
667 offsetof(CPUARMState, cp15.ifar_ns) },
669 /* Watchpoint Fault Address Register : should actually only be present
670 * for 1136, 1176, 11MPCore.
672 { .name = "WFAR", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 1,
673 .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0, },
674 { .name = "CPACR", .state = ARM_CP_STATE_BOTH, .opc0 = 3,
675 .crn = 1, .crm = 0, .opc1 = 0, .opc2 = 2, .accessfn = cpacr_access,
676 .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.cpacr_el1),
677 .resetvalue = 0, .writefn = cpacr_write },
681 static CPAccessResult pmreg_access(CPUARMState *env, const ARMCPRegInfo *ri)
683 /* Performance monitor registers user accessibility is controlled
686 if (arm_current_el(env) == 0 && !env->cp15.c9_pmuserenr) {
687 return CP_ACCESS_TRAP;
692 #ifndef CONFIG_USER_ONLY
694 static inline bool arm_ccnt_enabled(CPUARMState *env)
696 /* This does not support checking PMCCFILTR_EL0 register */
698 if (!(env->cp15.c9_pmcr & PMCRE)) {
705 void pmccntr_sync(CPUARMState *env)
709 temp_ticks = muldiv64(qemu_clock_get_us(QEMU_CLOCK_VIRTUAL),
710 get_ticks_per_sec(), 1000000);
712 if (env->cp15.c9_pmcr & PMCRD) {
713 /* Increment once every 64 processor clock cycles */
717 if (arm_ccnt_enabled(env)) {
718 env->cp15.c15_ccnt = temp_ticks - env->cp15.c15_ccnt;
722 static void pmcr_write(CPUARMState *env, const ARMCPRegInfo *ri,
728 /* The counter has been reset */
729 env->cp15.c15_ccnt = 0;
732 /* only the DP, X, D and E bits are writable */
733 env->cp15.c9_pmcr &= ~0x39;
734 env->cp15.c9_pmcr |= (value & 0x39);
739 static uint64_t pmccntr_read(CPUARMState *env, const ARMCPRegInfo *ri)
741 uint64_t total_ticks;
743 if (!arm_ccnt_enabled(env)) {
744 /* Counter is disabled, do not change value */
745 return env->cp15.c15_ccnt;
748 total_ticks = muldiv64(qemu_clock_get_us(QEMU_CLOCK_VIRTUAL),
749 get_ticks_per_sec(), 1000000);
751 if (env->cp15.c9_pmcr & PMCRD) {
752 /* Increment once every 64 processor clock cycles */
755 return total_ticks - env->cp15.c15_ccnt;
758 static void pmccntr_write(CPUARMState *env, const ARMCPRegInfo *ri,
761 uint64_t total_ticks;
763 if (!arm_ccnt_enabled(env)) {
764 /* Counter is disabled, set the absolute value */
765 env->cp15.c15_ccnt = value;
769 total_ticks = muldiv64(qemu_clock_get_us(QEMU_CLOCK_VIRTUAL),
770 get_ticks_per_sec(), 1000000);
772 if (env->cp15.c9_pmcr & PMCRD) {
773 /* Increment once every 64 processor clock cycles */
776 env->cp15.c15_ccnt = total_ticks - value;
779 static void pmccntr_write32(CPUARMState *env, const ARMCPRegInfo *ri,
782 uint64_t cur_val = pmccntr_read(env, NULL);
784 pmccntr_write(env, ri, deposit64(cur_val, 0, 32, value));
787 #else /* CONFIG_USER_ONLY */
789 void pmccntr_sync(CPUARMState *env)
795 static void pmccfiltr_write(CPUARMState *env, const ARMCPRegInfo *ri,
799 env->cp15.pmccfiltr_el0 = value & 0x7E000000;
803 static void pmcntenset_write(CPUARMState *env, const ARMCPRegInfo *ri,
807 env->cp15.c9_pmcnten |= value;
810 static void pmcntenclr_write(CPUARMState *env, const ARMCPRegInfo *ri,
814 env->cp15.c9_pmcnten &= ~value;
817 static void pmovsr_write(CPUARMState *env, const ARMCPRegInfo *ri,
820 env->cp15.c9_pmovsr &= ~value;
823 static void pmxevtyper_write(CPUARMState *env, const ARMCPRegInfo *ri,
826 env->cp15.c9_pmxevtyper = value & 0xff;
829 static void pmuserenr_write(CPUARMState *env, const ARMCPRegInfo *ri,
832 env->cp15.c9_pmuserenr = value & 1;
835 static void pmintenset_write(CPUARMState *env, const ARMCPRegInfo *ri,
838 /* We have no event counters so only the C bit can be changed */
840 env->cp15.c9_pminten |= value;
843 static void pmintenclr_write(CPUARMState *env, const ARMCPRegInfo *ri,
847 env->cp15.c9_pminten &= ~value;
850 static void vbar_write(CPUARMState *env, const ARMCPRegInfo *ri,
853 /* Note that even though the AArch64 view of this register has bits
854 * [10:0] all RES0 we can only mask the bottom 5, to comply with the
855 * architectural requirements for bits which are RES0 only in some
856 * contexts. (ARMv8 would permit us to do no masking at all, but ARMv7
857 * requires the bottom five bits to be RAZ/WI because they're UNK/SBZP.)
859 raw_write(env, ri, value & ~0x1FULL);
862 static void scr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
864 /* We only mask off bits that are RES0 both for AArch64 and AArch32.
865 * For bits that vary between AArch32/64, code needs to check the
866 * current execution mode before directly using the feature bit.
868 uint32_t valid_mask = SCR_AARCH64_MASK | SCR_AARCH32_MASK;
870 if (!arm_feature(env, ARM_FEATURE_EL2)) {
871 valid_mask &= ~SCR_HCE;
873 /* On ARMv7, SMD (or SCD as it is called in v7) is only
874 * supported if EL2 exists. The bit is UNK/SBZP when
875 * EL2 is unavailable. In QEMU ARMv7, we force it to always zero
876 * when EL2 is unavailable.
877 * On ARMv8, this bit is always available.
879 if (arm_feature(env, ARM_FEATURE_V7) &&
880 !arm_feature(env, ARM_FEATURE_V8)) {
881 valid_mask &= ~SCR_SMD;
885 /* Clear all-context RES0 bits. */
887 raw_write(env, ri, value);
890 static uint64_t ccsidr_read(CPUARMState *env, const ARMCPRegInfo *ri)
892 ARMCPU *cpu = arm_env_get_cpu(env);
894 /* Acquire the CSSELR index from the bank corresponding to the CCSIDR
897 uint32_t index = A32_BANKED_REG_GET(env, csselr,
898 ri->secure & ARM_CP_SECSTATE_S);
900 return cpu->ccsidr[index];
903 static void csselr_write(CPUARMState *env, const ARMCPRegInfo *ri,
906 raw_write(env, ri, value & 0xf);
909 static uint64_t isr_read(CPUARMState *env, const ARMCPRegInfo *ri)
911 CPUState *cs = ENV_GET_CPU(env);
914 if (cs->interrupt_request & CPU_INTERRUPT_HARD) {
917 if (cs->interrupt_request & CPU_INTERRUPT_FIQ) {
920 /* External aborts are not possible in QEMU so A bit is always clear */
924 static const ARMCPRegInfo v7_cp_reginfo[] = {
925 /* the old v6 WFI, UNPREDICTABLE in v7 but we choose to NOP */
926 { .name = "NOP", .cp = 15, .crn = 7, .crm = 0, .opc1 = 0, .opc2 = 4,
927 .access = PL1_W, .type = ARM_CP_NOP },
928 /* Performance monitors are implementation defined in v7,
929 * but with an ARM recommended set of registers, which we
930 * follow (although we don't actually implement any counters)
932 * Performance registers fall into three categories:
933 * (a) always UNDEF in PL0, RW in PL1 (PMINTENSET, PMINTENCLR)
934 * (b) RO in PL0 (ie UNDEF on write), RW in PL1 (PMUSERENR)
935 * (c) UNDEF in PL0 if PMUSERENR.EN==0, otherwise accessible (all others)
936 * For the cases controlled by PMUSERENR we must set .access to PL0_RW
937 * or PL0_RO as appropriate and then check PMUSERENR in the helper fn.
939 { .name = "PMCNTENSET", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 1,
940 .access = PL0_RW, .type = ARM_CP_ALIAS,
941 .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmcnten),
942 .writefn = pmcntenset_write,
943 .accessfn = pmreg_access,
944 .raw_writefn = raw_write },
945 { .name = "PMCNTENSET_EL0", .state = ARM_CP_STATE_AA64,
946 .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 1,
947 .access = PL0_RW, .accessfn = pmreg_access,
948 .fieldoffset = offsetof(CPUARMState, cp15.c9_pmcnten), .resetvalue = 0,
949 .writefn = pmcntenset_write, .raw_writefn = raw_write },
950 { .name = "PMCNTENCLR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 2,
952 .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmcnten),
953 .accessfn = pmreg_access,
954 .writefn = pmcntenclr_write,
955 .type = ARM_CP_ALIAS },
956 { .name = "PMCNTENCLR_EL0", .state = ARM_CP_STATE_AA64,
957 .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 2,
958 .access = PL0_RW, .accessfn = pmreg_access,
959 .type = ARM_CP_ALIAS,
960 .fieldoffset = offsetof(CPUARMState, cp15.c9_pmcnten),
961 .writefn = pmcntenclr_write },
962 { .name = "PMOVSR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 3,
963 .access = PL0_RW, .fieldoffset = offsetof(CPUARMState, cp15.c9_pmovsr),
964 .accessfn = pmreg_access,
965 .writefn = pmovsr_write,
966 .raw_writefn = raw_write },
967 /* Unimplemented so WI. */
968 { .name = "PMSWINC", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 4,
969 .access = PL0_W, .accessfn = pmreg_access, .type = ARM_CP_NOP },
970 /* Since we don't implement any events, writing to PMSELR is UNPREDICTABLE.
971 * We choose to RAZ/WI.
973 { .name = "PMSELR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 5,
974 .access = PL0_RW, .type = ARM_CP_CONST, .resetvalue = 0,
975 .accessfn = pmreg_access },
976 #ifndef CONFIG_USER_ONLY
977 { .name = "PMCCNTR", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 0,
978 .access = PL0_RW, .resetvalue = 0, .type = ARM_CP_IO,
979 .readfn = pmccntr_read, .writefn = pmccntr_write32,
980 .accessfn = pmreg_access },
981 { .name = "PMCCNTR_EL0", .state = ARM_CP_STATE_AA64,
982 .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 13, .opc2 = 0,
983 .access = PL0_RW, .accessfn = pmreg_access,
985 .readfn = pmccntr_read, .writefn = pmccntr_write, },
987 { .name = "PMCCFILTR_EL0", .state = ARM_CP_STATE_AA64,
988 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 15, .opc2 = 7,
989 .writefn = pmccfiltr_write,
990 .access = PL0_RW, .accessfn = pmreg_access,
992 .fieldoffset = offsetof(CPUARMState, cp15.pmccfiltr_el0),
994 { .name = "PMXEVTYPER", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 1,
996 .fieldoffset = offsetof(CPUARMState, cp15.c9_pmxevtyper),
997 .accessfn = pmreg_access, .writefn = pmxevtyper_write,
998 .raw_writefn = raw_write },
999 /* Unimplemented, RAZ/WI. */
1000 { .name = "PMXEVCNTR", .cp = 15, .crn = 9, .crm = 13, .opc1 = 0, .opc2 = 2,
1001 .access = PL0_RW, .type = ARM_CP_CONST, .resetvalue = 0,
1002 .accessfn = pmreg_access },
1003 { .name = "PMUSERENR", .cp = 15, .crn = 9, .crm = 14, .opc1 = 0, .opc2 = 0,
1004 .access = PL0_R | PL1_RW,
1005 .fieldoffset = offsetof(CPUARMState, cp15.c9_pmuserenr),
1007 .writefn = pmuserenr_write, .raw_writefn = raw_write },
1008 { .name = "PMINTENSET", .cp = 15, .crn = 9, .crm = 14, .opc1 = 0, .opc2 = 1,
1010 .fieldoffset = offsetof(CPUARMState, cp15.c9_pminten),
1012 .writefn = pmintenset_write, .raw_writefn = raw_write },
1013 { .name = "PMINTENCLR", .cp = 15, .crn = 9, .crm = 14, .opc1 = 0, .opc2 = 2,
1014 .access = PL1_RW, .type = ARM_CP_ALIAS,
1015 .fieldoffset = offsetof(CPUARMState, cp15.c9_pminten),
1016 .writefn = pmintenclr_write, },
1017 { .name = "VBAR", .state = ARM_CP_STATE_BOTH,
1018 .opc0 = 3, .crn = 12, .crm = 0, .opc1 = 0, .opc2 = 0,
1019 .access = PL1_RW, .writefn = vbar_write,
1020 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.vbar_s),
1021 offsetof(CPUARMState, cp15.vbar_ns) },
1023 { .name = "CCSIDR", .state = ARM_CP_STATE_BOTH,
1024 .opc0 = 3, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = 0,
1025 .access = PL1_R, .readfn = ccsidr_read, .type = ARM_CP_NO_RAW },
1026 { .name = "CSSELR", .state = ARM_CP_STATE_BOTH,
1027 .opc0 = 3, .crn = 0, .crm = 0, .opc1 = 2, .opc2 = 0,
1028 .access = PL1_RW, .writefn = csselr_write, .resetvalue = 0,
1029 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.csselr_s),
1030 offsetof(CPUARMState, cp15.csselr_ns) } },
1031 /* Auxiliary ID register: this actually has an IMPDEF value but for now
1032 * just RAZ for all cores:
1034 { .name = "AIDR", .state = ARM_CP_STATE_BOTH,
1035 .opc0 = 3, .opc1 = 1, .crn = 0, .crm = 0, .opc2 = 7,
1036 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
1037 /* Auxiliary fault status registers: these also are IMPDEF, and we
1038 * choose to RAZ/WI for all cores.
1040 { .name = "AFSR0_EL1", .state = ARM_CP_STATE_BOTH,
1041 .opc0 = 3, .opc1 = 0, .crn = 5, .crm = 1, .opc2 = 0,
1042 .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
1043 { .name = "AFSR1_EL1", .state = ARM_CP_STATE_BOTH,
1044 .opc0 = 3, .opc1 = 0, .crn = 5, .crm = 1, .opc2 = 1,
1045 .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
1046 /* MAIR can just read-as-written because we don't implement caches
1047 * and so don't need to care about memory attributes.
1049 { .name = "MAIR_EL1", .state = ARM_CP_STATE_AA64,
1050 .opc0 = 3, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 0,
1051 .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.mair_el[1]),
1053 { .name = "MAIR_EL3", .state = ARM_CP_STATE_AA64,
1054 .opc0 = 3, .opc1 = 6, .crn = 10, .crm = 2, .opc2 = 0,
1055 .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.mair_el[3]),
1057 /* For non-long-descriptor page tables these are PRRR and NMRR;
1058 * regardless they still act as reads-as-written for QEMU.
1060 /* MAIR0/1 are defined separately from their 64-bit counterpart which
1061 * allows them to assign the correct fieldoffset based on the endianness
1062 * handled in the field definitions.
1064 { .name = "MAIR0", .state = ARM_CP_STATE_AA32,
1065 .cp = 15, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 0, .access = PL1_RW,
1066 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.mair0_s),
1067 offsetof(CPUARMState, cp15.mair0_ns) },
1068 .resetfn = arm_cp_reset_ignore },
1069 { .name = "MAIR1", .state = ARM_CP_STATE_AA32,
1070 .cp = 15, .opc1 = 0, .crn = 10, .crm = 2, .opc2 = 1, .access = PL1_RW,
1071 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.mair1_s),
1072 offsetof(CPUARMState, cp15.mair1_ns) },
1073 .resetfn = arm_cp_reset_ignore },
1074 { .name = "ISR_EL1", .state = ARM_CP_STATE_BOTH,
1075 .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 1, .opc2 = 0,
1076 .type = ARM_CP_NO_RAW, .access = PL1_R, .readfn = isr_read },
1077 /* 32 bit ITLB invalidates */
1078 { .name = "ITLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 0,
1079 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_write },
1080 { .name = "ITLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 1,
1081 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write },
1082 { .name = "ITLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 5, .opc2 = 2,
1083 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiasid_write },
1084 /* 32 bit DTLB invalidates */
1085 { .name = "DTLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 0,
1086 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_write },
1087 { .name = "DTLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 1,
1088 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write },
1089 { .name = "DTLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 6, .opc2 = 2,
1090 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiasid_write },
1091 /* 32 bit TLB invalidates */
1092 { .name = "TLBIALL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 0,
1093 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_write },
1094 { .name = "TLBIMVA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 1,
1095 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write },
1096 { .name = "TLBIASID", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 2,
1097 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiasid_write },
1098 { .name = "TLBIMVAA", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 3,
1099 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimvaa_write },
1103 static const ARMCPRegInfo v7mp_cp_reginfo[] = {
1104 /* 32 bit TLB invalidates, Inner Shareable */
1105 { .name = "TLBIALLIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 0,
1106 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbiall_is_write },
1107 { .name = "TLBIMVAIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 1,
1108 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_is_write },
1109 { .name = "TLBIASIDIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 2,
1110 .type = ARM_CP_NO_RAW, .access = PL1_W,
1111 .writefn = tlbiasid_is_write },
1112 { .name = "TLBIMVAAIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 3,
1113 .type = ARM_CP_NO_RAW, .access = PL1_W,
1114 .writefn = tlbimvaa_is_write },
1118 static void teecr_write(CPUARMState *env, const ARMCPRegInfo *ri,
1125 static CPAccessResult teehbr_access(CPUARMState *env, const ARMCPRegInfo *ri)
1127 if (arm_current_el(env) == 0 && (env->teecr & 1)) {
1128 return CP_ACCESS_TRAP;
1130 return CP_ACCESS_OK;
1133 static const ARMCPRegInfo t2ee_cp_reginfo[] = {
1134 { .name = "TEECR", .cp = 14, .crn = 0, .crm = 0, .opc1 = 6, .opc2 = 0,
1135 .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, teecr),
1137 .writefn = teecr_write },
1138 { .name = "TEEHBR", .cp = 14, .crn = 1, .crm = 0, .opc1 = 6, .opc2 = 0,
1139 .access = PL0_RW, .fieldoffset = offsetof(CPUARMState, teehbr),
1140 .accessfn = teehbr_access, .resetvalue = 0 },
1144 static const ARMCPRegInfo v6k_cp_reginfo[] = {
1145 { .name = "TPIDR_EL0", .state = ARM_CP_STATE_AA64,
1146 .opc0 = 3, .opc1 = 3, .opc2 = 2, .crn = 13, .crm = 0,
1148 .fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[0]), .resetvalue = 0 },
1149 { .name = "TPIDRURW", .cp = 15, .crn = 13, .crm = 0, .opc1 = 0, .opc2 = 2,
1151 .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tpidrurw_s),
1152 offsetoflow32(CPUARMState, cp15.tpidrurw_ns) },
1153 .resetfn = arm_cp_reset_ignore },
1154 { .name = "TPIDRRO_EL0", .state = ARM_CP_STATE_AA64,
1155 .opc0 = 3, .opc1 = 3, .opc2 = 3, .crn = 13, .crm = 0,
1156 .access = PL0_R|PL1_W,
1157 .fieldoffset = offsetof(CPUARMState, cp15.tpidrro_el[0]),
1159 { .name = "TPIDRURO", .cp = 15, .crn = 13, .crm = 0, .opc1 = 0, .opc2 = 3,
1160 .access = PL0_R|PL1_W,
1161 .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tpidruro_s),
1162 offsetoflow32(CPUARMState, cp15.tpidruro_ns) },
1163 .resetfn = arm_cp_reset_ignore },
1164 { .name = "TPIDR_EL1", .state = ARM_CP_STATE_AA64,
1165 .opc0 = 3, .opc1 = 0, .opc2 = 4, .crn = 13, .crm = 0,
1167 .fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[1]), .resetvalue = 0 },
1168 { .name = "TPIDRPRW", .opc1 = 0, .cp = 15, .crn = 13, .crm = 0, .opc2 = 4,
1170 .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tpidrprw_s),
1171 offsetoflow32(CPUARMState, cp15.tpidrprw_ns) },
1176 #ifndef CONFIG_USER_ONLY
1178 static CPAccessResult gt_cntfrq_access(CPUARMState *env, const ARMCPRegInfo *ri)
1180 /* CNTFRQ: not visible from PL0 if both PL0PCTEN and PL0VCTEN are zero */
1181 if (arm_current_el(env) == 0 && !extract32(env->cp15.c14_cntkctl, 0, 2)) {
1182 return CP_ACCESS_TRAP;
1184 return CP_ACCESS_OK;
1187 static CPAccessResult gt_counter_access(CPUARMState *env, int timeridx)
1189 unsigned int cur_el = arm_current_el(env);
1190 bool secure = arm_is_secure(env);
1192 /* CNT[PV]CT: not visible from PL0 if ELO[PV]CTEN is zero */
1194 !extract32(env->cp15.c14_cntkctl, timeridx, 1)) {
1195 return CP_ACCESS_TRAP;
1198 if (arm_feature(env, ARM_FEATURE_EL2) &&
1199 timeridx == GTIMER_PHYS && !secure && cur_el < 2 &&
1200 !extract32(env->cp15.cnthctl_el2, 0, 1)) {
1201 return CP_ACCESS_TRAP_EL2;
1203 return CP_ACCESS_OK;
1206 static CPAccessResult gt_timer_access(CPUARMState *env, int timeridx)
1208 unsigned int cur_el = arm_current_el(env);
1209 bool secure = arm_is_secure(env);
1211 /* CNT[PV]_CVAL, CNT[PV]_CTL, CNT[PV]_TVAL: not visible from PL0 if
1212 * EL0[PV]TEN is zero.
1215 !extract32(env->cp15.c14_cntkctl, 9 - timeridx, 1)) {
1216 return CP_ACCESS_TRAP;
1219 if (arm_feature(env, ARM_FEATURE_EL2) &&
1220 timeridx == GTIMER_PHYS && !secure && cur_el < 2 &&
1221 !extract32(env->cp15.cnthctl_el2, 1, 1)) {
1222 return CP_ACCESS_TRAP_EL2;
1224 return CP_ACCESS_OK;
1227 static CPAccessResult gt_pct_access(CPUARMState *env,
1228 const ARMCPRegInfo *ri)
1230 return gt_counter_access(env, GTIMER_PHYS);
1233 static CPAccessResult gt_vct_access(CPUARMState *env,
1234 const ARMCPRegInfo *ri)
1236 return gt_counter_access(env, GTIMER_VIRT);
1239 static CPAccessResult gt_ptimer_access(CPUARMState *env, const ARMCPRegInfo *ri)
1241 return gt_timer_access(env, GTIMER_PHYS);
1244 static CPAccessResult gt_vtimer_access(CPUARMState *env, const ARMCPRegInfo *ri)
1246 return gt_timer_access(env, GTIMER_VIRT);
1249 static CPAccessResult gt_stimer_access(CPUARMState *env,
1250 const ARMCPRegInfo *ri)
1252 /* The AArch64 register view of the secure physical timer is
1253 * always accessible from EL3, and configurably accessible from
1256 switch (arm_current_el(env)) {
1258 if (!arm_is_secure(env)) {
1259 return CP_ACCESS_TRAP;
1261 if (!(env->cp15.scr_el3 & SCR_ST)) {
1262 return CP_ACCESS_TRAP_EL3;
1264 return CP_ACCESS_OK;
1267 return CP_ACCESS_TRAP;
1269 return CP_ACCESS_OK;
1271 g_assert_not_reached();
1275 static uint64_t gt_get_countervalue(CPUARMState *env)
1277 return qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) / GTIMER_SCALE;
1280 static void gt_recalc_timer(ARMCPU *cpu, int timeridx)
1282 ARMGenericTimer *gt = &cpu->env.cp15.c14_timer[timeridx];
1285 /* Timer enabled: calculate and set current ISTATUS, irq, and
1286 * reset timer to when ISTATUS next has to change
1288 uint64_t offset = timeridx == GTIMER_VIRT ?
1289 cpu->env.cp15.cntvoff_el2 : 0;
1290 uint64_t count = gt_get_countervalue(&cpu->env);
1291 /* Note that this must be unsigned 64 bit arithmetic: */
1292 int istatus = count - offset >= gt->cval;
1295 gt->ctl = deposit32(gt->ctl, 2, 1, istatus);
1296 qemu_set_irq(cpu->gt_timer_outputs[timeridx],
1297 (istatus && !(gt->ctl & 2)));
1299 /* Next transition is when count rolls back over to zero */
1300 nexttick = UINT64_MAX;
1302 /* Next transition is when we hit cval */
1303 nexttick = gt->cval + offset;
1305 /* Note that the desired next expiry time might be beyond the
1306 * signed-64-bit range of a QEMUTimer -- in this case we just
1307 * set the timer for as far in the future as possible. When the
1308 * timer expires we will reset the timer for any remaining period.
1310 if (nexttick > INT64_MAX / GTIMER_SCALE) {
1311 nexttick = INT64_MAX / GTIMER_SCALE;
1313 timer_mod(cpu->gt_timer[timeridx], nexttick);
1315 /* Timer disabled: ISTATUS and timer output always clear */
1317 qemu_set_irq(cpu->gt_timer_outputs[timeridx], 0);
1318 timer_del(cpu->gt_timer[timeridx]);
1322 static void gt_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri,
1325 ARMCPU *cpu = arm_env_get_cpu(env);
1327 timer_del(cpu->gt_timer[timeridx]);
1330 static uint64_t gt_cnt_read(CPUARMState *env, const ARMCPRegInfo *ri)
1332 return gt_get_countervalue(env);
1335 static uint64_t gt_virt_cnt_read(CPUARMState *env, const ARMCPRegInfo *ri)
1337 return gt_get_countervalue(env) - env->cp15.cntvoff_el2;
1340 static void gt_cval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1344 env->cp15.c14_timer[timeridx].cval = value;
1345 gt_recalc_timer(arm_env_get_cpu(env), timeridx);
1348 static uint64_t gt_tval_read(CPUARMState *env, const ARMCPRegInfo *ri,
1351 uint64_t offset = timeridx == GTIMER_VIRT ? env->cp15.cntvoff_el2 : 0;
1353 return (uint32_t)(env->cp15.c14_timer[timeridx].cval -
1354 (gt_get_countervalue(env) - offset));
1357 static void gt_tval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1361 uint64_t offset = timeridx == GTIMER_VIRT ? env->cp15.cntvoff_el2 : 0;
1363 env->cp15.c14_timer[timeridx].cval = gt_get_countervalue(env) - offset +
1364 sextract64(value, 0, 32);
1365 gt_recalc_timer(arm_env_get_cpu(env), timeridx);
1368 static void gt_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri,
1372 ARMCPU *cpu = arm_env_get_cpu(env);
1373 uint32_t oldval = env->cp15.c14_timer[timeridx].ctl;
1375 env->cp15.c14_timer[timeridx].ctl = deposit64(oldval, 0, 2, value);
1376 if ((oldval ^ value) & 1) {
1377 /* Enable toggled */
1378 gt_recalc_timer(cpu, timeridx);
1379 } else if ((oldval ^ value) & 2) {
1380 /* IMASK toggled: don't need to recalculate,
1381 * just set the interrupt line based on ISTATUS
1383 qemu_set_irq(cpu->gt_timer_outputs[timeridx],
1384 (oldval & 4) && !(value & 2));
1388 static void gt_phys_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri)
1390 gt_timer_reset(env, ri, GTIMER_PHYS);
1393 static void gt_phys_cval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1396 gt_cval_write(env, ri, GTIMER_PHYS, value);
1399 static uint64_t gt_phys_tval_read(CPUARMState *env, const ARMCPRegInfo *ri)
1401 return gt_tval_read(env, ri, GTIMER_PHYS);
1404 static void gt_phys_tval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1407 gt_tval_write(env, ri, GTIMER_PHYS, value);
1410 static void gt_phys_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri,
1413 gt_ctl_write(env, ri, GTIMER_PHYS, value);
1416 static void gt_virt_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri)
1418 gt_timer_reset(env, ri, GTIMER_VIRT);
1421 static void gt_virt_cval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1424 gt_cval_write(env, ri, GTIMER_VIRT, value);
1427 static uint64_t gt_virt_tval_read(CPUARMState *env, const ARMCPRegInfo *ri)
1429 return gt_tval_read(env, ri, GTIMER_VIRT);
1432 static void gt_virt_tval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1435 gt_tval_write(env, ri, GTIMER_VIRT, value);
1438 static void gt_virt_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri,
1441 gt_ctl_write(env, ri, GTIMER_VIRT, value);
1444 static void gt_cntvoff_write(CPUARMState *env, const ARMCPRegInfo *ri,
1447 ARMCPU *cpu = arm_env_get_cpu(env);
1449 raw_write(env, ri, value);
1450 gt_recalc_timer(cpu, GTIMER_VIRT);
1453 static void gt_hyp_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri)
1455 gt_timer_reset(env, ri, GTIMER_HYP);
1458 static void gt_hyp_cval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1461 gt_cval_write(env, ri, GTIMER_HYP, value);
1464 static uint64_t gt_hyp_tval_read(CPUARMState *env, const ARMCPRegInfo *ri)
1466 return gt_tval_read(env, ri, GTIMER_HYP);
1469 static void gt_hyp_tval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1472 gt_tval_write(env, ri, GTIMER_HYP, value);
1475 static void gt_hyp_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri,
1478 gt_ctl_write(env, ri, GTIMER_HYP, value);
1481 static void gt_sec_timer_reset(CPUARMState *env, const ARMCPRegInfo *ri)
1483 gt_timer_reset(env, ri, GTIMER_SEC);
1486 static void gt_sec_cval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1489 gt_cval_write(env, ri, GTIMER_SEC, value);
1492 static uint64_t gt_sec_tval_read(CPUARMState *env, const ARMCPRegInfo *ri)
1494 return gt_tval_read(env, ri, GTIMER_SEC);
1497 static void gt_sec_tval_write(CPUARMState *env, const ARMCPRegInfo *ri,
1500 gt_tval_write(env, ri, GTIMER_SEC, value);
1503 static void gt_sec_ctl_write(CPUARMState *env, const ARMCPRegInfo *ri,
1506 gt_ctl_write(env, ri, GTIMER_SEC, value);
1509 void arm_gt_ptimer_cb(void *opaque)
1511 ARMCPU *cpu = opaque;
1513 gt_recalc_timer(cpu, GTIMER_PHYS);
1516 void arm_gt_vtimer_cb(void *opaque)
1518 ARMCPU *cpu = opaque;
1520 gt_recalc_timer(cpu, GTIMER_VIRT);
1523 void arm_gt_htimer_cb(void *opaque)
1525 ARMCPU *cpu = opaque;
1527 gt_recalc_timer(cpu, GTIMER_HYP);
1530 void arm_gt_stimer_cb(void *opaque)
1532 ARMCPU *cpu = opaque;
1534 gt_recalc_timer(cpu, GTIMER_SEC);
1537 static const ARMCPRegInfo generic_timer_cp_reginfo[] = {
1538 /* Note that CNTFRQ is purely reads-as-written for the benefit
1539 * of software; writing it doesn't actually change the timer frequency.
1540 * Our reset value matches the fixed frequency we implement the timer at.
1542 { .name = "CNTFRQ", .cp = 15, .crn = 14, .crm = 0, .opc1 = 0, .opc2 = 0,
1543 .type = ARM_CP_ALIAS,
1544 .access = PL1_RW | PL0_R, .accessfn = gt_cntfrq_access,
1545 .fieldoffset = offsetoflow32(CPUARMState, cp15.c14_cntfrq),
1547 { .name = "CNTFRQ_EL0", .state = ARM_CP_STATE_AA64,
1548 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 0, .opc2 = 0,
1549 .access = PL1_RW | PL0_R, .accessfn = gt_cntfrq_access,
1550 .fieldoffset = offsetof(CPUARMState, cp15.c14_cntfrq),
1551 .resetvalue = (1000 * 1000 * 1000) / GTIMER_SCALE,
1553 /* overall control: mostly access permissions */
1554 { .name = "CNTKCTL", .state = ARM_CP_STATE_BOTH,
1555 .opc0 = 3, .opc1 = 0, .crn = 14, .crm = 1, .opc2 = 0,
1557 .fieldoffset = offsetof(CPUARMState, cp15.c14_cntkctl),
1560 /* per-timer control */
1561 { .name = "CNTP_CTL", .cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 1,
1562 .secure = ARM_CP_SECSTATE_NS,
1563 .type = ARM_CP_IO | ARM_CP_ALIAS, .access = PL1_RW | PL0_R,
1564 .accessfn = gt_ptimer_access,
1565 .fieldoffset = offsetoflow32(CPUARMState,
1566 cp15.c14_timer[GTIMER_PHYS].ctl),
1567 .writefn = gt_phys_ctl_write, .raw_writefn = raw_write,
1569 { .name = "CNTP_CTL(S)",
1570 .cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 1,
1571 .secure = ARM_CP_SECSTATE_S,
1572 .type = ARM_CP_IO | ARM_CP_ALIAS, .access = PL1_RW | PL0_R,
1573 .accessfn = gt_ptimer_access,
1574 .fieldoffset = offsetoflow32(CPUARMState,
1575 cp15.c14_timer[GTIMER_SEC].ctl),
1576 .writefn = gt_sec_ctl_write, .raw_writefn = raw_write,
1578 { .name = "CNTP_CTL_EL0", .state = ARM_CP_STATE_AA64,
1579 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 2, .opc2 = 1,
1580 .type = ARM_CP_IO, .access = PL1_RW | PL0_R,
1581 .accessfn = gt_ptimer_access,
1582 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_PHYS].ctl),
1584 .writefn = gt_phys_ctl_write, .raw_writefn = raw_write,
1586 { .name = "CNTV_CTL", .cp = 15, .crn = 14, .crm = 3, .opc1 = 0, .opc2 = 1,
1587 .type = ARM_CP_IO | ARM_CP_ALIAS, .access = PL1_RW | PL0_R,
1588 .accessfn = gt_vtimer_access,
1589 .fieldoffset = offsetoflow32(CPUARMState,
1590 cp15.c14_timer[GTIMER_VIRT].ctl),
1591 .writefn = gt_virt_ctl_write, .raw_writefn = raw_write,
1593 { .name = "CNTV_CTL_EL0", .state = ARM_CP_STATE_AA64,
1594 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 3, .opc2 = 1,
1595 .type = ARM_CP_IO, .access = PL1_RW | PL0_R,
1596 .accessfn = gt_vtimer_access,
1597 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_VIRT].ctl),
1599 .writefn = gt_virt_ctl_write, .raw_writefn = raw_write,
1601 /* TimerValue views: a 32 bit downcounting view of the underlying state */
1602 { .name = "CNTP_TVAL", .cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 0,
1603 .secure = ARM_CP_SECSTATE_NS,
1604 .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R,
1605 .accessfn = gt_ptimer_access,
1606 .readfn = gt_phys_tval_read, .writefn = gt_phys_tval_write,
1608 { .name = "CNTP_TVAL(S)",
1609 .cp = 15, .crn = 14, .crm = 2, .opc1 = 0, .opc2 = 0,
1610 .secure = ARM_CP_SECSTATE_S,
1611 .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R,
1612 .accessfn = gt_ptimer_access,
1613 .readfn = gt_sec_tval_read, .writefn = gt_sec_tval_write,
1615 { .name = "CNTP_TVAL_EL0", .state = ARM_CP_STATE_AA64,
1616 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 2, .opc2 = 0,
1617 .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R,
1618 .accessfn = gt_ptimer_access, .resetfn = gt_phys_timer_reset,
1619 .readfn = gt_phys_tval_read, .writefn = gt_phys_tval_write,
1621 { .name = "CNTV_TVAL", .cp = 15, .crn = 14, .crm = 3, .opc1 = 0, .opc2 = 0,
1622 .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R,
1623 .accessfn = gt_vtimer_access,
1624 .readfn = gt_virt_tval_read, .writefn = gt_virt_tval_write,
1626 { .name = "CNTV_TVAL_EL0", .state = ARM_CP_STATE_AA64,
1627 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 3, .opc2 = 0,
1628 .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW | PL0_R,
1629 .accessfn = gt_vtimer_access, .resetfn = gt_virt_timer_reset,
1630 .readfn = gt_virt_tval_read, .writefn = gt_virt_tval_write,
1632 /* The counter itself */
1633 { .name = "CNTPCT", .cp = 15, .crm = 14, .opc1 = 0,
1634 .access = PL0_R, .type = ARM_CP_64BIT | ARM_CP_NO_RAW | ARM_CP_IO,
1635 .accessfn = gt_pct_access,
1636 .readfn = gt_cnt_read, .resetfn = arm_cp_reset_ignore,
1638 { .name = "CNTPCT_EL0", .state = ARM_CP_STATE_AA64,
1639 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 0, .opc2 = 1,
1640 .access = PL0_R, .type = ARM_CP_NO_RAW | ARM_CP_IO,
1641 .accessfn = gt_pct_access, .readfn = gt_cnt_read,
1643 { .name = "CNTVCT", .cp = 15, .crm = 14, .opc1 = 1,
1644 .access = PL0_R, .type = ARM_CP_64BIT | ARM_CP_NO_RAW | ARM_CP_IO,
1645 .accessfn = gt_vct_access,
1646 .readfn = gt_virt_cnt_read, .resetfn = arm_cp_reset_ignore,
1648 { .name = "CNTVCT_EL0", .state = ARM_CP_STATE_AA64,
1649 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 0, .opc2 = 2,
1650 .access = PL0_R, .type = ARM_CP_NO_RAW | ARM_CP_IO,
1651 .accessfn = gt_vct_access, .readfn = gt_virt_cnt_read,
1653 /* Comparison value, indicating when the timer goes off */
1654 { .name = "CNTP_CVAL", .cp = 15, .crm = 14, .opc1 = 2,
1655 .secure = ARM_CP_SECSTATE_NS,
1656 .access = PL1_RW | PL0_R,
1657 .type = ARM_CP_64BIT | ARM_CP_IO | ARM_CP_ALIAS,
1658 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_PHYS].cval),
1659 .accessfn = gt_ptimer_access,
1660 .writefn = gt_phys_cval_write, .raw_writefn = raw_write,
1662 { .name = "CNTP_CVAL(S)", .cp = 15, .crm = 14, .opc1 = 2,
1663 .secure = ARM_CP_SECSTATE_S,
1664 .access = PL1_RW | PL0_R,
1665 .type = ARM_CP_64BIT | ARM_CP_IO | ARM_CP_ALIAS,
1666 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_SEC].cval),
1667 .accessfn = gt_ptimer_access,
1668 .writefn = gt_sec_cval_write, .raw_writefn = raw_write,
1670 { .name = "CNTP_CVAL_EL0", .state = ARM_CP_STATE_AA64,
1671 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 2, .opc2 = 2,
1672 .access = PL1_RW | PL0_R,
1674 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_PHYS].cval),
1675 .resetvalue = 0, .accessfn = gt_ptimer_access,
1676 .writefn = gt_phys_cval_write, .raw_writefn = raw_write,
1678 { .name = "CNTV_CVAL", .cp = 15, .crm = 14, .opc1 = 3,
1679 .access = PL1_RW | PL0_R,
1680 .type = ARM_CP_64BIT | ARM_CP_IO | ARM_CP_ALIAS,
1681 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_VIRT].cval),
1682 .accessfn = gt_vtimer_access,
1683 .writefn = gt_virt_cval_write, .raw_writefn = raw_write,
1685 { .name = "CNTV_CVAL_EL0", .state = ARM_CP_STATE_AA64,
1686 .opc0 = 3, .opc1 = 3, .crn = 14, .crm = 3, .opc2 = 2,
1687 .access = PL1_RW | PL0_R,
1689 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_VIRT].cval),
1690 .resetvalue = 0, .accessfn = gt_vtimer_access,
1691 .writefn = gt_virt_cval_write, .raw_writefn = raw_write,
1693 /* Secure timer -- this is actually restricted to only EL3
1694 * and configurably Secure-EL1 via the accessfn.
1696 { .name = "CNTPS_TVAL_EL1", .state = ARM_CP_STATE_AA64,
1697 .opc0 = 3, .opc1 = 7, .crn = 14, .crm = 2, .opc2 = 0,
1698 .type = ARM_CP_NO_RAW | ARM_CP_IO, .access = PL1_RW,
1699 .accessfn = gt_stimer_access,
1700 .readfn = gt_sec_tval_read,
1701 .writefn = gt_sec_tval_write,
1702 .resetfn = gt_sec_timer_reset,
1704 { .name = "CNTPS_CTL_EL1", .state = ARM_CP_STATE_AA64,
1705 .opc0 = 3, .opc1 = 7, .crn = 14, .crm = 2, .opc2 = 1,
1706 .type = ARM_CP_IO, .access = PL1_RW,
1707 .accessfn = gt_stimer_access,
1708 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_SEC].ctl),
1710 .writefn = gt_sec_ctl_write, .raw_writefn = raw_write,
1712 { .name = "CNTPS_CVAL_EL1", .state = ARM_CP_STATE_AA64,
1713 .opc0 = 3, .opc1 = 7, .crn = 14, .crm = 2, .opc2 = 2,
1714 .type = ARM_CP_IO, .access = PL1_RW,
1715 .accessfn = gt_stimer_access,
1716 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_SEC].cval),
1717 .writefn = gt_sec_cval_write, .raw_writefn = raw_write,
1723 /* In user-mode none of the generic timer registers are accessible,
1724 * and their implementation depends on QEMU_CLOCK_VIRTUAL and qdev gpio outputs,
1725 * so instead just don't register any of them.
1727 static const ARMCPRegInfo generic_timer_cp_reginfo[] = {
1733 static void par_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
1735 if (arm_feature(env, ARM_FEATURE_LPAE)) {
1736 raw_write(env, ri, value);
1737 } else if (arm_feature(env, ARM_FEATURE_V7)) {
1738 raw_write(env, ri, value & 0xfffff6ff);
1740 raw_write(env, ri, value & 0xfffff1ff);
1744 #ifndef CONFIG_USER_ONLY
1745 /* get_phys_addr() isn't present for user-mode-only targets */
1747 static CPAccessResult ats_access(CPUARMState *env, const ARMCPRegInfo *ri)
1750 /* The ATS12NSO* operations must trap to EL3 if executed in
1751 * Secure EL1 (which can only happen if EL3 is AArch64).
1752 * They are simply UNDEF if executed from NS EL1.
1753 * They function normally from EL2 or EL3.
1755 if (arm_current_el(env) == 1) {
1756 if (arm_is_secure_below_el3(env)) {
1757 return CP_ACCESS_TRAP_UNCATEGORIZED_EL3;
1759 return CP_ACCESS_TRAP_UNCATEGORIZED;
1762 return CP_ACCESS_OK;
1765 static uint64_t do_ats_write(CPUARMState *env, uint64_t value,
1766 int access_type, ARMMMUIdx mmu_idx)
1769 target_ulong page_size;
1774 MemTxAttrs attrs = {};
1776 ret = get_phys_addr(env, value, access_type, mmu_idx,
1777 &phys_addr, &attrs, &prot, &page_size, &fsr);
1778 if (extended_addresses_enabled(env)) {
1779 /* fsr is a DFSR/IFSR value for the long descriptor
1780 * translation table format, but with WnR always clear.
1781 * Convert it to a 64-bit PAR.
1783 par64 = (1 << 11); /* LPAE bit always set */
1785 par64 |= phys_addr & ~0xfffULL;
1786 if (!attrs.secure) {
1787 par64 |= (1 << 9); /* NS */
1789 /* We don't set the ATTR or SH fields in the PAR. */
1792 par64 |= (fsr & 0x3f) << 1; /* FS */
1793 /* Note that S2WLK and FSTAGE are always zero, because we don't
1794 * implement virtualization and therefore there can't be a stage 2
1799 /* fsr is a DFSR/IFSR value for the short descriptor
1800 * translation table format (with WnR always clear).
1801 * Convert it to a 32-bit PAR.
1804 /* We do not set any attribute bits in the PAR */
1805 if (page_size == (1 << 24)
1806 && arm_feature(env, ARM_FEATURE_V7)) {
1807 par64 = (phys_addr & 0xff000000) | (1 << 1);
1809 par64 = phys_addr & 0xfffff000;
1811 if (!attrs.secure) {
1812 par64 |= (1 << 9); /* NS */
1815 par64 = ((fsr & (1 << 10)) >> 5) | ((fsr & (1 << 12)) >> 6) |
1816 ((fsr & 0xf) << 1) | 1;
1822 static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
1824 int access_type = ri->opc2 & 1;
1827 int el = arm_current_el(env);
1828 bool secure = arm_is_secure_below_el3(env);
1830 switch (ri->opc2 & 6) {
1832 /* stage 1 current state PL1: ATS1CPR, ATS1CPW */
1835 mmu_idx = ARMMMUIdx_S1E3;
1838 mmu_idx = ARMMMUIdx_S1NSE1;
1841 mmu_idx = secure ? ARMMMUIdx_S1SE1 : ARMMMUIdx_S1NSE1;
1844 g_assert_not_reached();
1848 /* stage 1 current state PL0: ATS1CUR, ATS1CUW */
1851 mmu_idx = ARMMMUIdx_S1SE0;
1854 mmu_idx = ARMMMUIdx_S1NSE0;
1857 mmu_idx = secure ? ARMMMUIdx_S1SE0 : ARMMMUIdx_S1NSE0;
1860 g_assert_not_reached();
1864 /* stage 1+2 NonSecure PL1: ATS12NSOPR, ATS12NSOPW */
1865 mmu_idx = ARMMMUIdx_S12NSE1;
1868 /* stage 1+2 NonSecure PL0: ATS12NSOUR, ATS12NSOUW */
1869 mmu_idx = ARMMMUIdx_S12NSE0;
1872 g_assert_not_reached();
1875 par64 = do_ats_write(env, value, access_type, mmu_idx);
1877 A32_BANKED_CURRENT_REG_SET(env, par, par64);
1880 static void ats1h_write(CPUARMState *env, const ARMCPRegInfo *ri,
1883 int access_type = ri->opc2 & 1;
1886 par64 = do_ats_write(env, value, access_type, ARMMMUIdx_S2NS);
1888 A32_BANKED_CURRENT_REG_SET(env, par, par64);
1891 static CPAccessResult at_s1e2_access(CPUARMState *env, const ARMCPRegInfo *ri)
1893 if (arm_current_el(env) == 3 && !(env->cp15.scr_el3 & SCR_NS)) {
1894 return CP_ACCESS_TRAP;
1896 return CP_ACCESS_OK;
1899 static void ats_write64(CPUARMState *env, const ARMCPRegInfo *ri,
1902 int access_type = ri->opc2 & 1;
1904 int secure = arm_is_secure_below_el3(env);
1906 switch (ri->opc2 & 6) {
1909 case 0: /* AT S1E1R, AT S1E1W */
1910 mmu_idx = secure ? ARMMMUIdx_S1SE1 : ARMMMUIdx_S1NSE1;
1912 case 4: /* AT S1E2R, AT S1E2W */
1913 mmu_idx = ARMMMUIdx_S1E2;
1915 case 6: /* AT S1E3R, AT S1E3W */
1916 mmu_idx = ARMMMUIdx_S1E3;
1919 g_assert_not_reached();
1922 case 2: /* AT S1E0R, AT S1E0W */
1923 mmu_idx = secure ? ARMMMUIdx_S1SE0 : ARMMMUIdx_S1NSE0;
1925 case 4: /* AT S12E1R, AT S12E1W */
1926 mmu_idx = secure ? ARMMMUIdx_S1SE1 : ARMMMUIdx_S12NSE1;
1928 case 6: /* AT S12E0R, AT S12E0W */
1929 mmu_idx = secure ? ARMMMUIdx_S1SE0 : ARMMMUIdx_S12NSE0;
1932 g_assert_not_reached();
1935 env->cp15.par_el[1] = do_ats_write(env, value, access_type, mmu_idx);
1939 static const ARMCPRegInfo vapa_cp_reginfo[] = {
1940 { .name = "PAR", .cp = 15, .crn = 7, .crm = 4, .opc1 = 0, .opc2 = 0,
1941 .access = PL1_RW, .resetvalue = 0,
1942 .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.par_s),
1943 offsetoflow32(CPUARMState, cp15.par_ns) },
1944 .writefn = par_write },
1945 #ifndef CONFIG_USER_ONLY
1946 /* This underdecoding is safe because the reginfo is NO_RAW. */
1947 { .name = "ATS", .cp = 15, .crn = 7, .crm = 8, .opc1 = 0, .opc2 = CP_ANY,
1948 .access = PL1_W, .accessfn = ats_access,
1949 .writefn = ats_write, .type = ARM_CP_NO_RAW },
1954 /* Return basic MPU access permission bits. */
1955 static uint32_t simple_mpu_ap_bits(uint32_t val)
1962 for (i = 0; i < 16; i += 2) {
1963 ret |= (val >> i) & mask;
1969 /* Pad basic MPU access permission bits to extended format. */
1970 static uint32_t extended_mpu_ap_bits(uint32_t val)
1977 for (i = 0; i < 16; i += 2) {
1978 ret |= (val & mask) << i;
1984 static void pmsav5_data_ap_write(CPUARMState *env, const ARMCPRegInfo *ri,
1987 env->cp15.pmsav5_data_ap = extended_mpu_ap_bits(value);
1990 static uint64_t pmsav5_data_ap_read(CPUARMState *env, const ARMCPRegInfo *ri)
1992 return simple_mpu_ap_bits(env->cp15.pmsav5_data_ap);
1995 static void pmsav5_insn_ap_write(CPUARMState *env, const ARMCPRegInfo *ri,
1998 env->cp15.pmsav5_insn_ap = extended_mpu_ap_bits(value);
2001 static uint64_t pmsav5_insn_ap_read(CPUARMState *env, const ARMCPRegInfo *ri)
2003 return simple_mpu_ap_bits(env->cp15.pmsav5_insn_ap);
2006 static uint64_t pmsav7_read(CPUARMState *env, const ARMCPRegInfo *ri)
2008 uint32_t *u32p = *(uint32_t **)raw_ptr(env, ri);
2014 u32p += env->cp15.c6_rgnr;
2018 static void pmsav7_write(CPUARMState *env, const ARMCPRegInfo *ri,
2021 ARMCPU *cpu = arm_env_get_cpu(env);
2022 uint32_t *u32p = *(uint32_t **)raw_ptr(env, ri);
2028 u32p += env->cp15.c6_rgnr;
2029 tlb_flush(CPU(cpu), 1); /* Mappings may have changed - purge! */
2033 static void pmsav7_reset(CPUARMState *env, const ARMCPRegInfo *ri)
2035 ARMCPU *cpu = arm_env_get_cpu(env);
2036 uint32_t *u32p = *(uint32_t **)raw_ptr(env, ri);
2042 memset(u32p, 0, sizeof(*u32p) * cpu->pmsav7_dregion);
2045 static void pmsav7_rgnr_write(CPUARMState *env, const ARMCPRegInfo *ri,
2048 ARMCPU *cpu = arm_env_get_cpu(env);
2049 uint32_t nrgs = cpu->pmsav7_dregion;
2051 if (value >= nrgs) {
2052 qemu_log_mask(LOG_GUEST_ERROR,
2053 "PMSAv7 RGNR write >= # supported regions, %" PRIu32
2054 " > %" PRIu32 "\n", (uint32_t)value, nrgs);
2058 raw_write(env, ri, value);
2061 static const ARMCPRegInfo pmsav7_cp_reginfo[] = {
2062 { .name = "DRBAR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 1, .opc2 = 0,
2063 .access = PL1_RW, .type = ARM_CP_NO_RAW,
2064 .fieldoffset = offsetof(CPUARMState, pmsav7.drbar),
2065 .readfn = pmsav7_read, .writefn = pmsav7_write, .resetfn = pmsav7_reset },
2066 { .name = "DRSR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 1, .opc2 = 2,
2067 .access = PL1_RW, .type = ARM_CP_NO_RAW,
2068 .fieldoffset = offsetof(CPUARMState, pmsav7.drsr),
2069 .readfn = pmsav7_read, .writefn = pmsav7_write, .resetfn = pmsav7_reset },
2070 { .name = "DRACR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 1, .opc2 = 4,
2071 .access = PL1_RW, .type = ARM_CP_NO_RAW,
2072 .fieldoffset = offsetof(CPUARMState, pmsav7.dracr),
2073 .readfn = pmsav7_read, .writefn = pmsav7_write, .resetfn = pmsav7_reset },
2074 { .name = "RGNR", .cp = 15, .crn = 6, .opc1 = 0, .crm = 2, .opc2 = 0,
2076 .fieldoffset = offsetof(CPUARMState, cp15.c6_rgnr),
2077 .writefn = pmsav7_rgnr_write },
2081 static const ARMCPRegInfo pmsav5_cp_reginfo[] = {
2082 { .name = "DATA_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 0,
2083 .access = PL1_RW, .type = ARM_CP_ALIAS,
2084 .fieldoffset = offsetof(CPUARMState, cp15.pmsav5_data_ap),
2085 .readfn = pmsav5_data_ap_read, .writefn = pmsav5_data_ap_write, },
2086 { .name = "INSN_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 1,
2087 .access = PL1_RW, .type = ARM_CP_ALIAS,
2088 .fieldoffset = offsetof(CPUARMState, cp15.pmsav5_insn_ap),
2089 .readfn = pmsav5_insn_ap_read, .writefn = pmsav5_insn_ap_write, },
2090 { .name = "DATA_EXT_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 2,
2092 .fieldoffset = offsetof(CPUARMState, cp15.pmsav5_data_ap),
2094 { .name = "INSN_EXT_AP", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 3,
2096 .fieldoffset = offsetof(CPUARMState, cp15.pmsav5_insn_ap),
2098 { .name = "DCACHE_CFG", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 0,
2100 .fieldoffset = offsetof(CPUARMState, cp15.c2_data), .resetvalue = 0, },
2101 { .name = "ICACHE_CFG", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 1,
2103 .fieldoffset = offsetof(CPUARMState, cp15.c2_insn), .resetvalue = 0, },
2104 /* Protection region base and size registers */
2105 { .name = "946_PRBS0", .cp = 15, .crn = 6, .crm = 0, .opc1 = 0,
2106 .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
2107 .fieldoffset = offsetof(CPUARMState, cp15.c6_region[0]) },
2108 { .name = "946_PRBS1", .cp = 15, .crn = 6, .crm = 1, .opc1 = 0,
2109 .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
2110 .fieldoffset = offsetof(CPUARMState, cp15.c6_region[1]) },
2111 { .name = "946_PRBS2", .cp = 15, .crn = 6, .crm = 2, .opc1 = 0,
2112 .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
2113 .fieldoffset = offsetof(CPUARMState, cp15.c6_region[2]) },
2114 { .name = "946_PRBS3", .cp = 15, .crn = 6, .crm = 3, .opc1 = 0,
2115 .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
2116 .fieldoffset = offsetof(CPUARMState, cp15.c6_region[3]) },
2117 { .name = "946_PRBS4", .cp = 15, .crn = 6, .crm = 4, .opc1 = 0,
2118 .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
2119 .fieldoffset = offsetof(CPUARMState, cp15.c6_region[4]) },
2120 { .name = "946_PRBS5", .cp = 15, .crn = 6, .crm = 5, .opc1 = 0,
2121 .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
2122 .fieldoffset = offsetof(CPUARMState, cp15.c6_region[5]) },
2123 { .name = "946_PRBS6", .cp = 15, .crn = 6, .crm = 6, .opc1 = 0,
2124 .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
2125 .fieldoffset = offsetof(CPUARMState, cp15.c6_region[6]) },
2126 { .name = "946_PRBS7", .cp = 15, .crn = 6, .crm = 7, .opc1 = 0,
2127 .opc2 = CP_ANY, .access = PL1_RW, .resetvalue = 0,
2128 .fieldoffset = offsetof(CPUARMState, cp15.c6_region[7]) },
2132 static void vmsa_ttbcr_raw_write(CPUARMState *env, const ARMCPRegInfo *ri,
2135 TCR *tcr = raw_ptr(env, ri);
2136 int maskshift = extract32(value, 0, 3);
2138 if (!arm_feature(env, ARM_FEATURE_V8)) {
2139 if (arm_feature(env, ARM_FEATURE_LPAE) && (value & TTBCR_EAE)) {
2140 /* Pre ARMv8 bits [21:19], [15:14] and [6:3] are UNK/SBZP when
2141 * using Long-desciptor translation table format */
2142 value &= ~((7 << 19) | (3 << 14) | (0xf << 3));
2143 } else if (arm_feature(env, ARM_FEATURE_EL3)) {
2144 /* In an implementation that includes the Security Extensions
2145 * TTBCR has additional fields PD0 [4] and PD1 [5] for
2146 * Short-descriptor translation table format.
2148 value &= TTBCR_PD1 | TTBCR_PD0 | TTBCR_N;
2154 /* Update the masks corresponding to the TCR bank being written
2155 * Note that we always calculate mask and base_mask, but
2156 * they are only used for short-descriptor tables (ie if EAE is 0);
2157 * for long-descriptor tables the TCR fields are used differently
2158 * and the mask and base_mask values are meaningless.
2160 tcr->raw_tcr = value;
2161 tcr->mask = ~(((uint32_t)0xffffffffu) >> maskshift);
2162 tcr->base_mask = ~((uint32_t)0x3fffu >> maskshift);
2165 static void vmsa_ttbcr_write(CPUARMState *env, const ARMCPRegInfo *ri,
2168 ARMCPU *cpu = arm_env_get_cpu(env);
2170 if (arm_feature(env, ARM_FEATURE_LPAE)) {
2171 /* With LPAE the TTBCR could result in a change of ASID
2172 * via the TTBCR.A1 bit, so do a TLB flush.
2174 tlb_flush(CPU(cpu), 1);
2176 vmsa_ttbcr_raw_write(env, ri, value);
2179 static void vmsa_ttbcr_reset(CPUARMState *env, const ARMCPRegInfo *ri)
2181 TCR *tcr = raw_ptr(env, ri);
2183 /* Reset both the TCR as well as the masks corresponding to the bank of
2184 * the TCR being reset.
2188 tcr->base_mask = 0xffffc000u;
2191 static void vmsa_tcr_el1_write(CPUARMState *env, const ARMCPRegInfo *ri,
2194 ARMCPU *cpu = arm_env_get_cpu(env);
2195 TCR *tcr = raw_ptr(env, ri);
2197 /* For AArch64 the A1 bit could result in a change of ASID, so TLB flush. */
2198 tlb_flush(CPU(cpu), 1);
2199 tcr->raw_tcr = value;
2202 static void vmsa_ttbr_write(CPUARMState *env, const ARMCPRegInfo *ri,
2205 /* 64 bit accesses to the TTBRs can change the ASID and so we
2206 * must flush the TLB.
2208 if (cpreg_field_is_64bit(ri)) {
2209 ARMCPU *cpu = arm_env_get_cpu(env);
2211 tlb_flush(CPU(cpu), 1);
2213 raw_write(env, ri, value);
2216 static void vttbr_write(CPUARMState *env, const ARMCPRegInfo *ri,
2219 ARMCPU *cpu = arm_env_get_cpu(env);
2220 CPUState *cs = CPU(cpu);
2222 /* Accesses to VTTBR may change the VMID so we must flush the TLB. */
2223 if (raw_read(env, ri) != value) {
2224 tlb_flush_by_mmuidx(cs, ARMMMUIdx_S12NSE1, ARMMMUIdx_S12NSE0,
2225 ARMMMUIdx_S2NS, -1);
2226 raw_write(env, ri, value);
2230 static const ARMCPRegInfo vmsa_pmsa_cp_reginfo[] = {
2231 { .name = "DFSR", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 0,
2232 .access = PL1_RW, .type = ARM_CP_ALIAS,
2233 .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.dfsr_s),
2234 offsetoflow32(CPUARMState, cp15.dfsr_ns) }, },
2235 { .name = "IFSR", .cp = 15, .crn = 5, .crm = 0, .opc1 = 0, .opc2 = 1,
2236 .access = PL1_RW, .resetvalue = 0,
2237 .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.ifsr_s),
2238 offsetoflow32(CPUARMState, cp15.ifsr_ns) } },
2239 { .name = "DFAR", .cp = 15, .opc1 = 0, .crn = 6, .crm = 0, .opc2 = 0,
2240 .access = PL1_RW, .resetvalue = 0,
2241 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.dfar_s),
2242 offsetof(CPUARMState, cp15.dfar_ns) } },
2243 { .name = "FAR_EL1", .state = ARM_CP_STATE_AA64,
2244 .opc0 = 3, .crn = 6, .crm = 0, .opc1 = 0, .opc2 = 0,
2245 .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.far_el[1]),
2250 static const ARMCPRegInfo vmsa_cp_reginfo[] = {
2251 { .name = "ESR_EL1", .state = ARM_CP_STATE_AA64,
2252 .opc0 = 3, .crn = 5, .crm = 2, .opc1 = 0, .opc2 = 0,
2254 .fieldoffset = offsetof(CPUARMState, cp15.esr_el[1]), .resetvalue = 0, },
2255 { .name = "TTBR0_EL1", .state = ARM_CP_STATE_BOTH,
2256 .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 0,
2257 .access = PL1_RW, .writefn = vmsa_ttbr_write, .resetvalue = 0,
2258 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr0_s),
2259 offsetof(CPUARMState, cp15.ttbr0_ns) } },
2260 { .name = "TTBR1_EL1", .state = ARM_CP_STATE_BOTH,
2261 .opc0 = 3, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 1,
2262 .access = PL1_RW, .writefn = vmsa_ttbr_write, .resetvalue = 0,
2263 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr1_s),
2264 offsetof(CPUARMState, cp15.ttbr1_ns) } },
2265 { .name = "TCR_EL1", .state = ARM_CP_STATE_AA64,
2266 .opc0 = 3, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 2,
2267 .access = PL1_RW, .writefn = vmsa_tcr_el1_write,
2268 .resetfn = vmsa_ttbcr_reset, .raw_writefn = raw_write,
2269 .fieldoffset = offsetof(CPUARMState, cp15.tcr_el[1]) },
2270 { .name = "TTBCR", .cp = 15, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 2,
2271 .access = PL1_RW, .type = ARM_CP_ALIAS, .writefn = vmsa_ttbcr_write,
2272 .raw_writefn = vmsa_ttbcr_raw_write,
2273 .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.tcr_el[3]),
2274 offsetoflow32(CPUARMState, cp15.tcr_el[1])} },
2278 static void omap_ticonfig_write(CPUARMState *env, const ARMCPRegInfo *ri,
2281 env->cp15.c15_ticonfig = value & 0xe7;
2282 /* The OS_TYPE bit in this register changes the reported CPUID! */
2283 env->cp15.c0_cpuid = (value & (1 << 5)) ?
2284 ARM_CPUID_TI915T : ARM_CPUID_TI925T;
2287 static void omap_threadid_write(CPUARMState *env, const ARMCPRegInfo *ri,
2290 env->cp15.c15_threadid = value & 0xffff;
2293 static void omap_wfi_write(CPUARMState *env, const ARMCPRegInfo *ri,
2296 /* Wait-for-interrupt (deprecated) */
2297 cpu_interrupt(CPU(arm_env_get_cpu(env)), CPU_INTERRUPT_HALT);
2300 static void omap_cachemaint_write(CPUARMState *env, const ARMCPRegInfo *ri,
2303 /* On OMAP there are registers indicating the max/min index of dcache lines
2304 * containing a dirty line; cache flush operations have to reset these.
2306 env->cp15.c15_i_max = 0x000;
2307 env->cp15.c15_i_min = 0xff0;
2310 static const ARMCPRegInfo omap_cp_reginfo[] = {
2311 { .name = "DFSR", .cp = 15, .crn = 5, .crm = CP_ANY,
2312 .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_OVERRIDE,
2313 .fieldoffset = offsetoflow32(CPUARMState, cp15.esr_el[1]),
2315 { .name = "", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 0,
2316 .access = PL1_RW, .type = ARM_CP_NOP },
2317 { .name = "TICONFIG", .cp = 15, .crn = 15, .crm = 1, .opc1 = 0, .opc2 = 0,
2319 .fieldoffset = offsetof(CPUARMState, cp15.c15_ticonfig), .resetvalue = 0,
2320 .writefn = omap_ticonfig_write },
2321 { .name = "IMAX", .cp = 15, .crn = 15, .crm = 2, .opc1 = 0, .opc2 = 0,
2323 .fieldoffset = offsetof(CPUARMState, cp15.c15_i_max), .resetvalue = 0, },
2324 { .name = "IMIN", .cp = 15, .crn = 15, .crm = 3, .opc1 = 0, .opc2 = 0,
2325 .access = PL1_RW, .resetvalue = 0xff0,
2326 .fieldoffset = offsetof(CPUARMState, cp15.c15_i_min) },
2327 { .name = "THREADID", .cp = 15, .crn = 15, .crm = 4, .opc1 = 0, .opc2 = 0,
2329 .fieldoffset = offsetof(CPUARMState, cp15.c15_threadid), .resetvalue = 0,
2330 .writefn = omap_threadid_write },
2331 { .name = "TI925T_STATUS", .cp = 15, .crn = 15,
2332 .crm = 8, .opc1 = 0, .opc2 = 0, .access = PL1_RW,
2333 .type = ARM_CP_NO_RAW,
2334 .readfn = arm_cp_read_zero, .writefn = omap_wfi_write, },
2335 /* TODO: Peripheral port remap register:
2336 * On OMAP2 mcr p15, 0, rn, c15, c2, 4 sets up the interrupt controller
2337 * base address at $rn & ~0xfff and map size of 0x200 << ($rn & 0xfff),
2340 { .name = "OMAP_CACHEMAINT", .cp = 15, .crn = 7, .crm = CP_ANY,
2341 .opc1 = 0, .opc2 = CP_ANY, .access = PL1_W,
2342 .type = ARM_CP_OVERRIDE | ARM_CP_NO_RAW,
2343 .writefn = omap_cachemaint_write },
2344 { .name = "C9", .cp = 15, .crn = 9,
2345 .crm = CP_ANY, .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW,
2346 .type = ARM_CP_CONST | ARM_CP_OVERRIDE, .resetvalue = 0 },
2350 static void xscale_cpar_write(CPUARMState *env, const ARMCPRegInfo *ri,
2353 env->cp15.c15_cpar = value & 0x3fff;
2356 static const ARMCPRegInfo xscale_cp_reginfo[] = {
2357 { .name = "XSCALE_CPAR",
2358 .cp = 15, .crn = 15, .crm = 1, .opc1 = 0, .opc2 = 0, .access = PL1_RW,
2359 .fieldoffset = offsetof(CPUARMState, cp15.c15_cpar), .resetvalue = 0,
2360 .writefn = xscale_cpar_write, },
2361 { .name = "XSCALE_AUXCR",
2362 .cp = 15, .crn = 1, .crm = 0, .opc1 = 0, .opc2 = 1, .access = PL1_RW,
2363 .fieldoffset = offsetof(CPUARMState, cp15.c1_xscaleauxcr),
2365 /* XScale specific cache-lockdown: since we have no cache we NOP these
2366 * and hope the guest does not really rely on cache behaviour.
2368 { .name = "XSCALE_LOCK_ICACHE_LINE",
2369 .cp = 15, .opc1 = 0, .crn = 9, .crm = 1, .opc2 = 0,
2370 .access = PL1_W, .type = ARM_CP_NOP },
2371 { .name = "XSCALE_UNLOCK_ICACHE",
2372 .cp = 15, .opc1 = 0, .crn = 9, .crm = 1, .opc2 = 1,
2373 .access = PL1_W, .type = ARM_CP_NOP },
2374 { .name = "XSCALE_DCACHE_LOCK",
2375 .cp = 15, .opc1 = 0, .crn = 9, .crm = 2, .opc2 = 0,
2376 .access = PL1_RW, .type = ARM_CP_NOP },
2377 { .name = "XSCALE_UNLOCK_DCACHE",
2378 .cp = 15, .opc1 = 0, .crn = 9, .crm = 2, .opc2 = 1,
2379 .access = PL1_W, .type = ARM_CP_NOP },
2383 static const ARMCPRegInfo dummy_c15_cp_reginfo[] = {
2384 /* RAZ/WI the whole crn=15 space, when we don't have a more specific
2385 * implementation of this implementation-defined space.
2386 * Ideally this should eventually disappear in favour of actually
2387 * implementing the correct behaviour for all cores.
2389 { .name = "C15_IMPDEF", .cp = 15, .crn = 15,
2390 .crm = CP_ANY, .opc1 = CP_ANY, .opc2 = CP_ANY,
2392 .type = ARM_CP_CONST | ARM_CP_NO_RAW | ARM_CP_OVERRIDE,
2397 static const ARMCPRegInfo cache_dirty_status_cp_reginfo[] = {
2398 /* Cache status: RAZ because we have no cache so it's always clean */
2399 { .name = "CDSR", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 6,
2400 .access = PL1_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW,
2405 static const ARMCPRegInfo cache_block_ops_cp_reginfo[] = {
2406 /* We never have a a block transfer operation in progress */
2407 { .name = "BXSR", .cp = 15, .crn = 7, .crm = 12, .opc1 = 0, .opc2 = 4,
2408 .access = PL0_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW,
2410 /* The cache ops themselves: these all NOP for QEMU */
2411 { .name = "IICR", .cp = 15, .crm = 5, .opc1 = 0,
2412 .access = PL1_W, .type = ARM_CP_NOP|ARM_CP_64BIT },
2413 { .name = "IDCR", .cp = 15, .crm = 6, .opc1 = 0,
2414 .access = PL1_W, .type = ARM_CP_NOP|ARM_CP_64BIT },
2415 { .name = "CDCR", .cp = 15, .crm = 12, .opc1 = 0,
2416 .access = PL0_W, .type = ARM_CP_NOP|ARM_CP_64BIT },
2417 { .name = "PIR", .cp = 15, .crm = 12, .opc1 = 1,
2418 .access = PL0_W, .type = ARM_CP_NOP|ARM_CP_64BIT },
2419 { .name = "PDR", .cp = 15, .crm = 12, .opc1 = 2,
2420 .access = PL0_W, .type = ARM_CP_NOP|ARM_CP_64BIT },
2421 { .name = "CIDCR", .cp = 15, .crm = 14, .opc1 = 0,
2422 .access = PL1_W, .type = ARM_CP_NOP|ARM_CP_64BIT },
2426 static const ARMCPRegInfo cache_test_clean_cp_reginfo[] = {
2427 /* The cache test-and-clean instructions always return (1 << 30)
2428 * to indicate that there are no dirty cache lines.
2430 { .name = "TC_DCACHE", .cp = 15, .crn = 7, .crm = 10, .opc1 = 0, .opc2 = 3,
2431 .access = PL0_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW,
2432 .resetvalue = (1 << 30) },
2433 { .name = "TCI_DCACHE", .cp = 15, .crn = 7, .crm = 14, .opc1 = 0, .opc2 = 3,
2434 .access = PL0_R, .type = ARM_CP_CONST | ARM_CP_NO_RAW,
2435 .resetvalue = (1 << 30) },
2439 static const ARMCPRegInfo strongarm_cp_reginfo[] = {
2440 /* Ignore ReadBuffer accesses */
2441 { .name = "C9_READBUFFER", .cp = 15, .crn = 9,
2442 .crm = CP_ANY, .opc1 = CP_ANY, .opc2 = CP_ANY,
2443 .access = PL1_RW, .resetvalue = 0,
2444 .type = ARM_CP_CONST | ARM_CP_OVERRIDE | ARM_CP_NO_RAW },
2448 static uint64_t midr_read(CPUARMState *env, const ARMCPRegInfo *ri)
2450 ARMCPU *cpu = arm_env_get_cpu(env);
2451 unsigned int cur_el = arm_current_el(env);
2452 bool secure = arm_is_secure(env);
2454 if (arm_feature(&cpu->env, ARM_FEATURE_EL2) && !secure && cur_el == 1) {
2455 return env->cp15.vpidr_el2;
2457 return raw_read(env, ri);
2460 static uint64_t mpidr_read_val(CPUARMState *env)
2462 ARMCPU *cpu = ARM_CPU(arm_env_get_cpu(env));
2463 uint64_t mpidr = cpu->mp_affinity;
2465 if (arm_feature(env, ARM_FEATURE_V7MP)) {
2466 mpidr |= (1U << 31);
2467 /* Cores which are uniprocessor (non-coherent)
2468 * but still implement the MP extensions set
2469 * bit 30. (For instance, Cortex-R5).
2471 if (cpu->mp_is_up) {
2472 mpidr |= (1u << 30);
2478 static uint64_t mpidr_read(CPUARMState *env, const ARMCPRegInfo *ri)
2480 unsigned int cur_el = arm_current_el(env);
2481 bool secure = arm_is_secure(env);
2483 if (arm_feature(env, ARM_FEATURE_EL2) && !secure && cur_el == 1) {
2484 return env->cp15.vmpidr_el2;
2486 return mpidr_read_val(env);
2489 static const ARMCPRegInfo mpidr_cp_reginfo[] = {
2490 { .name = "MPIDR", .state = ARM_CP_STATE_BOTH,
2491 .opc0 = 3, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 5,
2492 .access = PL1_R, .readfn = mpidr_read, .type = ARM_CP_NO_RAW },
2496 static const ARMCPRegInfo lpae_cp_reginfo[] = {
2498 { .name = "AMAIR0", .state = ARM_CP_STATE_BOTH,
2499 .opc0 = 3, .crn = 10, .crm = 3, .opc1 = 0, .opc2 = 0,
2500 .access = PL1_RW, .type = ARM_CP_CONST,
2502 /* AMAIR1 is mapped to AMAIR_EL1[63:32] */
2503 { .name = "AMAIR1", .cp = 15, .crn = 10, .crm = 3, .opc1 = 0, .opc2 = 1,
2504 .access = PL1_RW, .type = ARM_CP_CONST,
2506 { .name = "PAR", .cp = 15, .crm = 7, .opc1 = 0,
2507 .access = PL1_RW, .type = ARM_CP_64BIT, .resetvalue = 0,
2508 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.par_s),
2509 offsetof(CPUARMState, cp15.par_ns)} },
2510 { .name = "TTBR0", .cp = 15, .crm = 2, .opc1 = 0,
2511 .access = PL1_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS,
2512 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr0_s),
2513 offsetof(CPUARMState, cp15.ttbr0_ns) },
2514 .writefn = vmsa_ttbr_write, },
2515 { .name = "TTBR1", .cp = 15, .crm = 2, .opc1 = 1,
2516 .access = PL1_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS,
2517 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr1_s),
2518 offsetof(CPUARMState, cp15.ttbr1_ns) },
2519 .writefn = vmsa_ttbr_write, },
2523 static uint64_t aa64_fpcr_read(CPUARMState *env, const ARMCPRegInfo *ri)
2525 return vfp_get_fpcr(env);
2528 static void aa64_fpcr_write(CPUARMState *env, const ARMCPRegInfo *ri,
2531 vfp_set_fpcr(env, value);
2534 static uint64_t aa64_fpsr_read(CPUARMState *env, const ARMCPRegInfo *ri)
2536 return vfp_get_fpsr(env);
2539 static void aa64_fpsr_write(CPUARMState *env, const ARMCPRegInfo *ri,
2542 vfp_set_fpsr(env, value);
2545 static CPAccessResult aa64_daif_access(CPUARMState *env, const ARMCPRegInfo *ri)
2547 if (arm_current_el(env) == 0 && !(env->cp15.sctlr_el[1] & SCTLR_UMA)) {
2548 return CP_ACCESS_TRAP;
2550 return CP_ACCESS_OK;
2553 static void aa64_daif_write(CPUARMState *env, const ARMCPRegInfo *ri,
2556 env->daif = value & PSTATE_DAIF;
2559 static CPAccessResult aa64_cacheop_access(CPUARMState *env,
2560 const ARMCPRegInfo *ri)
2562 /* Cache invalidate/clean: NOP, but EL0 must UNDEF unless
2563 * SCTLR_EL1.UCI is set.
2565 if (arm_current_el(env) == 0 && !(env->cp15.sctlr_el[1] & SCTLR_UCI)) {
2566 return CP_ACCESS_TRAP;
2568 return CP_ACCESS_OK;
2571 /* See: D4.7.2 TLB maintenance requirements and the TLB maintenance instructions
2572 * Page D4-1736 (DDI0487A.b)
2575 static void tlbi_aa64_vmalle1_write(CPUARMState *env, const ARMCPRegInfo *ri,
2578 ARMCPU *cpu = arm_env_get_cpu(env);
2579 CPUState *cs = CPU(cpu);
2581 if (arm_is_secure_below_el3(env)) {
2582 tlb_flush_by_mmuidx(cs, ARMMMUIdx_S1SE1, ARMMMUIdx_S1SE0, -1);
2584 tlb_flush_by_mmuidx(cs, ARMMMUIdx_S12NSE1, ARMMMUIdx_S12NSE0, -1);
2588 static void tlbi_aa64_vmalle1is_write(CPUARMState *env, const ARMCPRegInfo *ri,
2591 bool sec = arm_is_secure_below_el3(env);
2594 CPU_FOREACH(other_cs) {
2596 tlb_flush_by_mmuidx(other_cs, ARMMMUIdx_S1SE1, ARMMMUIdx_S1SE0, -1);
2598 tlb_flush_by_mmuidx(other_cs, ARMMMUIdx_S12NSE1,
2599 ARMMMUIdx_S12NSE0, -1);
2604 static void tlbi_aa64_alle1_write(CPUARMState *env, const ARMCPRegInfo *ri,
2607 /* Note that the 'ALL' scope must invalidate both stage 1 and
2608 * stage 2 translations, whereas most other scopes only invalidate
2609 * stage 1 translations.
2611 ARMCPU *cpu = arm_env_get_cpu(env);
2612 CPUState *cs = CPU(cpu);
2614 if (arm_is_secure_below_el3(env)) {
2615 tlb_flush_by_mmuidx(cs, ARMMMUIdx_S1SE1, ARMMMUIdx_S1SE0, -1);
2617 if (arm_feature(env, ARM_FEATURE_EL2)) {
2618 tlb_flush_by_mmuidx(cs, ARMMMUIdx_S12NSE1, ARMMMUIdx_S12NSE0,
2619 ARMMMUIdx_S2NS, -1);
2621 tlb_flush_by_mmuidx(cs, ARMMMUIdx_S12NSE1, ARMMMUIdx_S12NSE0, -1);
2626 static void tlbi_aa64_alle2_write(CPUARMState *env, const ARMCPRegInfo *ri,
2629 ARMCPU *cpu = arm_env_get_cpu(env);
2630 CPUState *cs = CPU(cpu);
2632 tlb_flush_by_mmuidx(cs, ARMMMUIdx_S1E2, -1);
2635 static void tlbi_aa64_alle3_write(CPUARMState *env, const ARMCPRegInfo *ri,
2638 ARMCPU *cpu = arm_env_get_cpu(env);
2639 CPUState *cs = CPU(cpu);
2641 tlb_flush_by_mmuidx(cs, ARMMMUIdx_S1E3, -1);
2644 static void tlbi_aa64_alle1is_write(CPUARMState *env, const ARMCPRegInfo *ri,
2647 /* Note that the 'ALL' scope must invalidate both stage 1 and
2648 * stage 2 translations, whereas most other scopes only invalidate
2649 * stage 1 translations.
2651 bool sec = arm_is_secure_below_el3(env);
2652 bool has_el2 = arm_feature(env, ARM_FEATURE_EL2);
2655 CPU_FOREACH(other_cs) {
2657 tlb_flush_by_mmuidx(other_cs, ARMMMUIdx_S1SE1, ARMMMUIdx_S1SE0, -1);
2658 } else if (has_el2) {
2659 tlb_flush_by_mmuidx(other_cs, ARMMMUIdx_S12NSE1,
2660 ARMMMUIdx_S12NSE0, ARMMMUIdx_S2NS, -1);
2662 tlb_flush_by_mmuidx(other_cs, ARMMMUIdx_S12NSE1,
2663 ARMMMUIdx_S12NSE0, -1);
2668 static void tlbi_aa64_alle2is_write(CPUARMState *env, const ARMCPRegInfo *ri,
2673 CPU_FOREACH(other_cs) {
2674 tlb_flush_by_mmuidx(other_cs, ARMMMUIdx_S1E2, -1);
2678 static void tlbi_aa64_alle3is_write(CPUARMState *env, const ARMCPRegInfo *ri,
2683 CPU_FOREACH(other_cs) {
2684 tlb_flush_by_mmuidx(other_cs, ARMMMUIdx_S1E3, -1);
2688 static void tlbi_aa64_vae1_write(CPUARMState *env, const ARMCPRegInfo *ri,
2691 /* Invalidate by VA, EL1&0 (AArch64 version).
2692 * Currently handles all of VAE1, VAAE1, VAALE1 and VALE1,
2693 * since we don't support flush-for-specific-ASID-only or
2694 * flush-last-level-only.
2696 ARMCPU *cpu = arm_env_get_cpu(env);
2697 CPUState *cs = CPU(cpu);
2698 uint64_t pageaddr = sextract64(value << 12, 0, 56);
2700 if (arm_is_secure_below_el3(env)) {
2701 tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdx_S1SE1,
2702 ARMMMUIdx_S1SE0, -1);
2704 tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdx_S12NSE1,
2705 ARMMMUIdx_S12NSE0, -1);
2709 static void tlbi_aa64_vae2_write(CPUARMState *env, const ARMCPRegInfo *ri,
2712 /* Invalidate by VA, EL2
2713 * Currently handles both VAE2 and VALE2, since we don't support
2714 * flush-last-level-only.
2716 ARMCPU *cpu = arm_env_get_cpu(env);
2717 CPUState *cs = CPU(cpu);
2718 uint64_t pageaddr = sextract64(value << 12, 0, 56);
2720 tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdx_S1E2, -1);
2723 static void tlbi_aa64_vae3_write(CPUARMState *env, const ARMCPRegInfo *ri,
2726 /* Invalidate by VA, EL3
2727 * Currently handles both VAE3 and VALE3, since we don't support
2728 * flush-last-level-only.
2730 ARMCPU *cpu = arm_env_get_cpu(env);
2731 CPUState *cs = CPU(cpu);
2732 uint64_t pageaddr = sextract64(value << 12, 0, 56);
2734 tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdx_S1E3, -1);
2737 static void tlbi_aa64_vae1is_write(CPUARMState *env, const ARMCPRegInfo *ri,
2740 bool sec = arm_is_secure_below_el3(env);
2742 uint64_t pageaddr = sextract64(value << 12, 0, 56);
2744 CPU_FOREACH(other_cs) {
2746 tlb_flush_page_by_mmuidx(other_cs, pageaddr, ARMMMUIdx_S1SE1,
2747 ARMMMUIdx_S1SE0, -1);
2749 tlb_flush_page_by_mmuidx(other_cs, pageaddr, ARMMMUIdx_S12NSE1,
2750 ARMMMUIdx_S12NSE0, -1);
2755 static void tlbi_aa64_vae2is_write(CPUARMState *env, const ARMCPRegInfo *ri,
2759 uint64_t pageaddr = sextract64(value << 12, 0, 56);
2761 CPU_FOREACH(other_cs) {
2762 tlb_flush_page_by_mmuidx(other_cs, pageaddr, ARMMMUIdx_S1E2, -1);
2766 static void tlbi_aa64_vae3is_write(CPUARMState *env, const ARMCPRegInfo *ri,
2770 uint64_t pageaddr = sextract64(value << 12, 0, 56);
2772 CPU_FOREACH(other_cs) {
2773 tlb_flush_page_by_mmuidx(other_cs, pageaddr, ARMMMUIdx_S1E3, -1);
2777 static void tlbi_aa64_ipas2e1_write(CPUARMState *env, const ARMCPRegInfo *ri,
2780 /* Invalidate by IPA. This has to invalidate any structures that
2781 * contain only stage 2 translation information, but does not need
2782 * to apply to structures that contain combined stage 1 and stage 2
2783 * translation information.
2784 * This must NOP if EL2 isn't implemented or SCR_EL3.NS is zero.
2786 ARMCPU *cpu = arm_env_get_cpu(env);
2787 CPUState *cs = CPU(cpu);
2790 if (!arm_feature(env, ARM_FEATURE_EL2) || !(env->cp15.scr_el3 & SCR_NS)) {
2794 pageaddr = sextract64(value << 12, 0, 48);
2796 tlb_flush_page_by_mmuidx(cs, pageaddr, ARMMMUIdx_S2NS, -1);
2799 static void tlbi_aa64_ipas2e1is_write(CPUARMState *env, const ARMCPRegInfo *ri,
2805 if (!arm_feature(env, ARM_FEATURE_EL2) || !(env->cp15.scr_el3 & SCR_NS)) {
2809 pageaddr = sextract64(value << 12, 0, 48);
2811 CPU_FOREACH(other_cs) {
2812 tlb_flush_page_by_mmuidx(other_cs, pageaddr, ARMMMUIdx_S2NS, -1);
2816 static CPAccessResult aa64_zva_access(CPUARMState *env, const ARMCPRegInfo *ri)
2818 /* We don't implement EL2, so the only control on DC ZVA is the
2819 * bit in the SCTLR which can prohibit access for EL0.
2821 if (arm_current_el(env) == 0 && !(env->cp15.sctlr_el[1] & SCTLR_DZE)) {
2822 return CP_ACCESS_TRAP;
2824 return CP_ACCESS_OK;
2827 static uint64_t aa64_dczid_read(CPUARMState *env, const ARMCPRegInfo *ri)
2829 ARMCPU *cpu = arm_env_get_cpu(env);
2830 int dzp_bit = 1 << 4;
2832 /* DZP indicates whether DC ZVA access is allowed */
2833 if (aa64_zva_access(env, NULL) == CP_ACCESS_OK) {
2836 return cpu->dcz_blocksize | dzp_bit;
2839 static CPAccessResult sp_el0_access(CPUARMState *env, const ARMCPRegInfo *ri)
2841 if (!(env->pstate & PSTATE_SP)) {
2842 /* Access to SP_EL0 is undefined if it's being used as
2843 * the stack pointer.
2845 return CP_ACCESS_TRAP_UNCATEGORIZED;
2847 return CP_ACCESS_OK;
2850 static uint64_t spsel_read(CPUARMState *env, const ARMCPRegInfo *ri)
2852 return env->pstate & PSTATE_SP;
2855 static void spsel_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t val)
2857 update_spsel(env, val);
2860 static void sctlr_write(CPUARMState *env, const ARMCPRegInfo *ri,
2863 ARMCPU *cpu = arm_env_get_cpu(env);
2865 if (raw_read(env, ri) == value) {
2866 /* Skip the TLB flush if nothing actually changed; Linux likes
2867 * to do a lot of pointless SCTLR writes.
2872 raw_write(env, ri, value);
2873 /* ??? Lots of these bits are not implemented. */
2874 /* This may enable/disable the MMU, so do a TLB flush. */
2875 tlb_flush(CPU(cpu), 1);
2878 static const ARMCPRegInfo v8_cp_reginfo[] = {
2879 /* Minimal set of EL0-visible registers. This will need to be expanded
2880 * significantly for system emulation of AArch64 CPUs.
2882 { .name = "NZCV", .state = ARM_CP_STATE_AA64,
2883 .opc0 = 3, .opc1 = 3, .opc2 = 0, .crn = 4, .crm = 2,
2884 .access = PL0_RW, .type = ARM_CP_NZCV },
2885 { .name = "DAIF", .state = ARM_CP_STATE_AA64,
2886 .opc0 = 3, .opc1 = 3, .opc2 = 1, .crn = 4, .crm = 2,
2887 .type = ARM_CP_NO_RAW,
2888 .access = PL0_RW, .accessfn = aa64_daif_access,
2889 .fieldoffset = offsetof(CPUARMState, daif),
2890 .writefn = aa64_daif_write, .resetfn = arm_cp_reset_ignore },
2891 { .name = "FPCR", .state = ARM_CP_STATE_AA64,
2892 .opc0 = 3, .opc1 = 3, .opc2 = 0, .crn = 4, .crm = 4,
2893 .access = PL0_RW, .readfn = aa64_fpcr_read, .writefn = aa64_fpcr_write },
2894 { .name = "FPSR", .state = ARM_CP_STATE_AA64,
2895 .opc0 = 3, .opc1 = 3, .opc2 = 1, .crn = 4, .crm = 4,
2896 .access = PL0_RW, .readfn = aa64_fpsr_read, .writefn = aa64_fpsr_write },
2897 { .name = "DCZID_EL0", .state = ARM_CP_STATE_AA64,
2898 .opc0 = 3, .opc1 = 3, .opc2 = 7, .crn = 0, .crm = 0,
2899 .access = PL0_R, .type = ARM_CP_NO_RAW,
2900 .readfn = aa64_dczid_read },
2901 { .name = "DC_ZVA", .state = ARM_CP_STATE_AA64,
2902 .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 4, .opc2 = 1,
2903 .access = PL0_W, .type = ARM_CP_DC_ZVA,
2904 #ifndef CONFIG_USER_ONLY
2905 /* Avoid overhead of an access check that always passes in user-mode */
2906 .accessfn = aa64_zva_access,
2909 { .name = "CURRENTEL", .state = ARM_CP_STATE_AA64,
2910 .opc0 = 3, .opc1 = 0, .opc2 = 2, .crn = 4, .crm = 2,
2911 .access = PL1_R, .type = ARM_CP_CURRENTEL },
2912 /* Cache ops: all NOPs since we don't emulate caches */
2913 { .name = "IC_IALLUIS", .state = ARM_CP_STATE_AA64,
2914 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 1, .opc2 = 0,
2915 .access = PL1_W, .type = ARM_CP_NOP },
2916 { .name = "IC_IALLU", .state = ARM_CP_STATE_AA64,
2917 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 0,
2918 .access = PL1_W, .type = ARM_CP_NOP },
2919 { .name = "IC_IVAU", .state = ARM_CP_STATE_AA64,
2920 .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 5, .opc2 = 1,
2921 .access = PL0_W, .type = ARM_CP_NOP,
2922 .accessfn = aa64_cacheop_access },
2923 { .name = "DC_IVAC", .state = ARM_CP_STATE_AA64,
2924 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 1,
2925 .access = PL1_W, .type = ARM_CP_NOP },
2926 { .name = "DC_ISW", .state = ARM_CP_STATE_AA64,
2927 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 2,
2928 .access = PL1_W, .type = ARM_CP_NOP },
2929 { .name = "DC_CVAC", .state = ARM_CP_STATE_AA64,
2930 .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 10, .opc2 = 1,
2931 .access = PL0_W, .type = ARM_CP_NOP,
2932 .accessfn = aa64_cacheop_access },
2933 { .name = "DC_CSW", .state = ARM_CP_STATE_AA64,
2934 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 10, .opc2 = 2,
2935 .access = PL1_W, .type = ARM_CP_NOP },
2936 { .name = "DC_CVAU", .state = ARM_CP_STATE_AA64,
2937 .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 11, .opc2 = 1,
2938 .access = PL0_W, .type = ARM_CP_NOP,
2939 .accessfn = aa64_cacheop_access },
2940 { .name = "DC_CIVAC", .state = ARM_CP_STATE_AA64,
2941 .opc0 = 1, .opc1 = 3, .crn = 7, .crm = 14, .opc2 = 1,
2942 .access = PL0_W, .type = ARM_CP_NOP,
2943 .accessfn = aa64_cacheop_access },
2944 { .name = "DC_CISW", .state = ARM_CP_STATE_AA64,
2945 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 2,
2946 .access = PL1_W, .type = ARM_CP_NOP },
2947 /* TLBI operations */
2948 { .name = "TLBI_VMALLE1IS", .state = ARM_CP_STATE_AA64,
2949 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 0,
2950 .access = PL1_W, .type = ARM_CP_NO_RAW,
2951 .writefn = tlbi_aa64_vmalle1is_write },
2952 { .name = "TLBI_VAE1IS", .state = ARM_CP_STATE_AA64,
2953 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 1,
2954 .access = PL1_W, .type = ARM_CP_NO_RAW,
2955 .writefn = tlbi_aa64_vae1is_write },
2956 { .name = "TLBI_ASIDE1IS", .state = ARM_CP_STATE_AA64,
2957 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 2,
2958 .access = PL1_W, .type = ARM_CP_NO_RAW,
2959 .writefn = tlbi_aa64_vmalle1is_write },
2960 { .name = "TLBI_VAAE1IS", .state = ARM_CP_STATE_AA64,
2961 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 3,
2962 .access = PL1_W, .type = ARM_CP_NO_RAW,
2963 .writefn = tlbi_aa64_vae1is_write },
2964 { .name = "TLBI_VALE1IS", .state = ARM_CP_STATE_AA64,
2965 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 5,
2966 .access = PL1_W, .type = ARM_CP_NO_RAW,
2967 .writefn = tlbi_aa64_vae1is_write },
2968 { .name = "TLBI_VAALE1IS", .state = ARM_CP_STATE_AA64,
2969 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 7,
2970 .access = PL1_W, .type = ARM_CP_NO_RAW,
2971 .writefn = tlbi_aa64_vae1is_write },
2972 { .name = "TLBI_VMALLE1", .state = ARM_CP_STATE_AA64,
2973 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 0,
2974 .access = PL1_W, .type = ARM_CP_NO_RAW,
2975 .writefn = tlbi_aa64_vmalle1_write },
2976 { .name = "TLBI_VAE1", .state = ARM_CP_STATE_AA64,
2977 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 1,
2978 .access = PL1_W, .type = ARM_CP_NO_RAW,
2979 .writefn = tlbi_aa64_vae1_write },
2980 { .name = "TLBI_ASIDE1", .state = ARM_CP_STATE_AA64,
2981 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 2,
2982 .access = PL1_W, .type = ARM_CP_NO_RAW,
2983 .writefn = tlbi_aa64_vmalle1_write },
2984 { .name = "TLBI_VAAE1", .state = ARM_CP_STATE_AA64,
2985 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 3,
2986 .access = PL1_W, .type = ARM_CP_NO_RAW,
2987 .writefn = tlbi_aa64_vae1_write },
2988 { .name = "TLBI_VALE1", .state = ARM_CP_STATE_AA64,
2989 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 5,
2990 .access = PL1_W, .type = ARM_CP_NO_RAW,
2991 .writefn = tlbi_aa64_vae1_write },
2992 { .name = "TLBI_VAALE1", .state = ARM_CP_STATE_AA64,
2993 .opc0 = 1, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 7,
2994 .access = PL1_W, .type = ARM_CP_NO_RAW,
2995 .writefn = tlbi_aa64_vae1_write },
2996 { .name = "TLBI_IPAS2E1IS", .state = ARM_CP_STATE_AA64,
2997 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 0, .opc2 = 1,
2998 .access = PL2_W, .type = ARM_CP_NO_RAW,
2999 .writefn = tlbi_aa64_ipas2e1is_write },
3000 { .name = "TLBI_IPAS2LE1IS", .state = ARM_CP_STATE_AA64,
3001 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 0, .opc2 = 5,
3002 .access = PL2_W, .type = ARM_CP_NO_RAW,
3003 .writefn = tlbi_aa64_ipas2e1is_write },
3004 { .name = "TLBI_ALLE1IS", .state = ARM_CP_STATE_AA64,
3005 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 4,
3006 .access = PL2_W, .type = ARM_CP_NO_RAW,
3007 .writefn = tlbi_aa64_alle1is_write },
3008 { .name = "TLBI_VMALLS12E1IS", .state = ARM_CP_STATE_AA64,
3009 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 6,
3010 .access = PL2_W, .type = ARM_CP_NO_RAW,
3011 .writefn = tlbi_aa64_alle1is_write },
3012 { .name = "TLBI_IPAS2E1", .state = ARM_CP_STATE_AA64,
3013 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 4, .opc2 = 1,
3014 .access = PL2_W, .type = ARM_CP_NO_RAW,
3015 .writefn = tlbi_aa64_ipas2e1_write },
3016 { .name = "TLBI_IPAS2LE1", .state = ARM_CP_STATE_AA64,
3017 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 4, .opc2 = 5,
3018 .access = PL2_W, .type = ARM_CP_NO_RAW,
3019 .writefn = tlbi_aa64_ipas2e1_write },
3020 { .name = "TLBI_ALLE1", .state = ARM_CP_STATE_AA64,
3021 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 4,
3022 .access = PL2_W, .type = ARM_CP_NO_RAW,
3023 .writefn = tlbi_aa64_alle1_write },
3024 { .name = "TLBI_VMALLS12E1", .state = ARM_CP_STATE_AA64,
3025 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 6,
3026 .access = PL2_W, .type = ARM_CP_NO_RAW,
3027 .writefn = tlbi_aa64_alle1is_write },
3028 #ifndef CONFIG_USER_ONLY
3029 /* 64 bit address translation operations */
3030 { .name = "AT_S1E1R", .state = ARM_CP_STATE_AA64,
3031 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 0,
3032 .access = PL1_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3033 { .name = "AT_S1E1W", .state = ARM_CP_STATE_AA64,
3034 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 1,
3035 .access = PL1_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3036 { .name = "AT_S1E0R", .state = ARM_CP_STATE_AA64,
3037 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 2,
3038 .access = PL1_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3039 { .name = "AT_S1E0W", .state = ARM_CP_STATE_AA64,
3040 .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 3,
3041 .access = PL1_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3042 { .name = "AT_S12E1R", .state = ARM_CP_STATE_AA64,
3043 .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 4,
3044 .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3045 { .name = "AT_S12E1W", .state = ARM_CP_STATE_AA64,
3046 .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 5,
3047 .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3048 { .name = "AT_S12E0R", .state = ARM_CP_STATE_AA64,
3049 .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 6,
3050 .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3051 { .name = "AT_S12E0W", .state = ARM_CP_STATE_AA64,
3052 .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 7,
3053 .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3054 /* AT S1E2* are elsewhere as they UNDEF from EL3 if EL2 is not present */
3055 { .name = "AT_S1E3R", .state = ARM_CP_STATE_AA64,
3056 .opc0 = 1, .opc1 = 6, .crn = 7, .crm = 8, .opc2 = 0,
3057 .access = PL3_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3058 { .name = "AT_S1E3W", .state = ARM_CP_STATE_AA64,
3059 .opc0 = 1, .opc1 = 6, .crn = 7, .crm = 8, .opc2 = 1,
3060 .access = PL3_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3061 { .name = "PAR_EL1", .state = ARM_CP_STATE_AA64,
3062 .type = ARM_CP_ALIAS,
3063 .opc0 = 3, .opc1 = 0, .crn = 7, .crm = 4, .opc2 = 0,
3064 .access = PL1_RW, .resetvalue = 0,
3065 .fieldoffset = offsetof(CPUARMState, cp15.par_el[1]),
3066 .writefn = par_write },
3068 /* TLB invalidate last level of translation table walk */
3069 { .name = "TLBIMVALIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 5,
3070 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_is_write },
3071 { .name = "TLBIMVAALIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 7,
3072 .type = ARM_CP_NO_RAW, .access = PL1_W,
3073 .writefn = tlbimvaa_is_write },
3074 { .name = "TLBIMVAL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 5,
3075 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimva_write },
3076 { .name = "TLBIMVAAL", .cp = 15, .opc1 = 0, .crn = 8, .crm = 7, .opc2 = 7,
3077 .type = ARM_CP_NO_RAW, .access = PL1_W, .writefn = tlbimvaa_write },
3078 /* 32 bit cache operations */
3079 { .name = "ICIALLUIS", .cp = 15, .opc1 = 0, .crn = 7, .crm = 1, .opc2 = 0,
3080 .type = ARM_CP_NOP, .access = PL1_W },
3081 { .name = "BPIALLUIS", .cp = 15, .opc1 = 0, .crn = 7, .crm = 1, .opc2 = 6,
3082 .type = ARM_CP_NOP, .access = PL1_W },
3083 { .name = "ICIALLU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 0,
3084 .type = ARM_CP_NOP, .access = PL1_W },
3085 { .name = "ICIMVAU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 1,
3086 .type = ARM_CP_NOP, .access = PL1_W },
3087 { .name = "BPIALL", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 6,
3088 .type = ARM_CP_NOP, .access = PL1_W },
3089 { .name = "BPIMVA", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 7,
3090 .type = ARM_CP_NOP, .access = PL1_W },
3091 { .name = "DCIMVAC", .cp = 15, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 1,
3092 .type = ARM_CP_NOP, .access = PL1_W },
3093 { .name = "DCISW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 2,
3094 .type = ARM_CP_NOP, .access = PL1_W },
3095 { .name = "DCCMVAC", .cp = 15, .opc1 = 0, .crn = 7, .crm = 10, .opc2 = 1,
3096 .type = ARM_CP_NOP, .access = PL1_W },
3097 { .name = "DCCSW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 10, .opc2 = 2,
3098 .type = ARM_CP_NOP, .access = PL1_W },
3099 { .name = "DCCMVAU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 11, .opc2 = 1,
3100 .type = ARM_CP_NOP, .access = PL1_W },
3101 { .name = "DCCIMVAC", .cp = 15, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 1,
3102 .type = ARM_CP_NOP, .access = PL1_W },
3103 { .name = "DCCISW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 2,
3104 .type = ARM_CP_NOP, .access = PL1_W },
3105 /* MMU Domain access control / MPU write buffer control */
3106 { .name = "DACR", .cp = 15, .opc1 = 0, .crn = 3, .crm = 0, .opc2 = 0,
3107 .access = PL1_RW, .resetvalue = 0,
3108 .writefn = dacr_write, .raw_writefn = raw_write,
3109 .bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.dacr_s),
3110 offsetoflow32(CPUARMState, cp15.dacr_ns) } },
3111 { .name = "ELR_EL1", .state = ARM_CP_STATE_AA64,
3112 .type = ARM_CP_ALIAS,
3113 .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 0, .opc2 = 1,
3115 .fieldoffset = offsetof(CPUARMState, elr_el[1]) },
3116 { .name = "SPSR_EL1", .state = ARM_CP_STATE_AA64,
3117 .type = ARM_CP_ALIAS,
3118 .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 0, .opc2 = 0,
3119 .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, banked_spsr[1]) },
3120 /* We rely on the access checks not allowing the guest to write to the
3121 * state field when SPSel indicates that it's being used as the stack
3124 { .name = "SP_EL0", .state = ARM_CP_STATE_AA64,
3125 .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 1, .opc2 = 0,
3126 .access = PL1_RW, .accessfn = sp_el0_access,
3127 .type = ARM_CP_ALIAS,
3128 .fieldoffset = offsetof(CPUARMState, sp_el[0]) },
3129 { .name = "SP_EL1", .state = ARM_CP_STATE_AA64,
3130 .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 1, .opc2 = 0,
3131 .access = PL2_RW, .type = ARM_CP_ALIAS,
3132 .fieldoffset = offsetof(CPUARMState, sp_el[1]) },
3133 { .name = "SPSel", .state = ARM_CP_STATE_AA64,
3134 .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 2, .opc2 = 0,
3135 .type = ARM_CP_NO_RAW,
3136 .access = PL1_RW, .readfn = spsel_read, .writefn = spsel_write },
3140 /* Used to describe the behaviour of EL2 regs when EL2 does not exist. */
3141 static const ARMCPRegInfo el3_no_el2_cp_reginfo[] = {
3142 { .name = "VBAR_EL2", .state = ARM_CP_STATE_AA64,
3143 .opc0 = 3, .opc1 = 4, .crn = 12, .crm = 0, .opc2 = 0,
3145 .readfn = arm_cp_read_zero, .writefn = arm_cp_write_ignore },
3146 { .name = "HCR_EL2", .state = ARM_CP_STATE_AA64,
3147 .type = ARM_CP_NO_RAW,
3148 .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 0,
3150 .readfn = arm_cp_read_zero, .writefn = arm_cp_write_ignore },
3151 { .name = "CPTR_EL2", .state = ARM_CP_STATE_BOTH,
3152 .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 2,
3153 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3154 { .name = "MAIR_EL2", .state = ARM_CP_STATE_BOTH,
3155 .opc0 = 3, .opc1 = 4, .crn = 10, .crm = 2, .opc2 = 0,
3156 .access = PL2_RW, .type = ARM_CP_CONST,
3158 { .name = "HMAIR1", .state = ARM_CP_STATE_AA32,
3159 .opc1 = 4, .crn = 10, .crm = 2, .opc2 = 1,
3160 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3161 { .name = "AMAIR_EL2", .state = ARM_CP_STATE_BOTH,
3162 .opc0 = 3, .opc1 = 4, .crn = 10, .crm = 3, .opc2 = 0,
3163 .access = PL2_RW, .type = ARM_CP_CONST,
3165 { .name = "HMAIR1", .state = ARM_CP_STATE_AA32,
3166 .opc1 = 4, .crn = 10, .crm = 3, .opc2 = 1,
3167 .access = PL2_RW, .type = ARM_CP_CONST,
3169 { .name = "AFSR0_EL2", .state = ARM_CP_STATE_BOTH,
3170 .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 1, .opc2 = 0,
3171 .access = PL2_RW, .type = ARM_CP_CONST,
3173 { .name = "AFSR1_EL2", .state = ARM_CP_STATE_BOTH,
3174 .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 1, .opc2 = 1,
3175 .access = PL2_RW, .type = ARM_CP_CONST,
3177 { .name = "TCR_EL2", .state = ARM_CP_STATE_BOTH,
3178 .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 0, .opc2 = 2,
3179 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3180 { .name = "VTCR_EL2", .state = ARM_CP_STATE_BOTH,
3181 .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 2,
3182 .access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any,
3183 .type = ARM_CP_CONST, .resetvalue = 0 },
3184 { .name = "VTTBR", .state = ARM_CP_STATE_AA32,
3185 .cp = 15, .opc1 = 6, .crm = 2,
3186 .access = PL2_RW, .accessfn = access_el3_aa32ns,
3187 .type = ARM_CP_CONST | ARM_CP_64BIT, .resetvalue = 0 },
3188 { .name = "VTTBR_EL2", .state = ARM_CP_STATE_AA64,
3189 .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 0,
3190 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3191 { .name = "SCTLR_EL2", .state = ARM_CP_STATE_BOTH,
3192 .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 0, .opc2 = 0,
3193 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3194 { .name = "TPIDR_EL2", .state = ARM_CP_STATE_BOTH,
3195 .opc0 = 3, .opc1 = 4, .crn = 13, .crm = 0, .opc2 = 2,
3196 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3197 { .name = "TTBR0_EL2", .state = ARM_CP_STATE_AA64,
3198 .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 0, .opc2 = 0,
3199 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3200 { .name = "HTTBR", .cp = 15, .opc1 = 4, .crm = 2,
3201 .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_CONST,
3203 { .name = "CNTHCTL_EL2", .state = ARM_CP_STATE_BOTH,
3204 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 1, .opc2 = 0,
3205 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3206 { .name = "CNTVOFF_EL2", .state = ARM_CP_STATE_AA64,
3207 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 0, .opc2 = 3,
3208 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3209 { .name = "CNTVOFF", .cp = 15, .opc1 = 4, .crm = 14,
3210 .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_CONST,
3212 { .name = "CNTHP_CVAL_EL2", .state = ARM_CP_STATE_AA64,
3213 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 2,
3214 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3215 { .name = "CNTHP_CVAL", .cp = 15, .opc1 = 6, .crm = 14,
3216 .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_CONST,
3218 { .name = "CNTHP_TVAL_EL2", .state = ARM_CP_STATE_BOTH,
3219 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 0,
3220 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3221 { .name = "CNTHP_CTL_EL2", .state = ARM_CP_STATE_BOTH,
3222 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 1,
3223 .access = PL2_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
3227 static void hcr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
3229 ARMCPU *cpu = arm_env_get_cpu(env);
3230 uint64_t valid_mask = HCR_MASK;
3232 if (arm_feature(env, ARM_FEATURE_EL3)) {
3233 valid_mask &= ~HCR_HCD;
3235 valid_mask &= ~HCR_TSC;
3238 /* Clear RES0 bits. */
3239 value &= valid_mask;
3241 /* These bits change the MMU setup:
3242 * HCR_VM enables stage 2 translation
3243 * HCR_PTW forbids certain page-table setups
3244 * HCR_DC Disables stage1 and enables stage2 translation
3246 if ((raw_read(env, ri) ^ value) & (HCR_VM | HCR_PTW | HCR_DC)) {
3247 tlb_flush(CPU(cpu), 1);
3249 raw_write(env, ri, value);
3252 static const ARMCPRegInfo el2_cp_reginfo[] = {
3253 { .name = "HCR_EL2", .state = ARM_CP_STATE_AA64,
3254 .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 0,
3255 .access = PL2_RW, .fieldoffset = offsetof(CPUARMState, cp15.hcr_el2),
3256 .writefn = hcr_write },
3257 { .name = "DACR32_EL2", .state = ARM_CP_STATE_AA64,
3258 .opc0 = 3, .opc1 = 4, .crn = 3, .crm = 0, .opc2 = 0,
3259 .access = PL2_RW, .resetvalue = 0,
3260 .writefn = dacr_write, .raw_writefn = raw_write,
3261 .fieldoffset = offsetof(CPUARMState, cp15.dacr32_el2) },
3262 { .name = "ELR_EL2", .state = ARM_CP_STATE_AA64,
3263 .type = ARM_CP_ALIAS,
3264 .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 0, .opc2 = 1,
3266 .fieldoffset = offsetof(CPUARMState, elr_el[2]) },
3267 { .name = "ESR_EL2", .state = ARM_CP_STATE_AA64,
3268 .type = ARM_CP_ALIAS,
3269 .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 2, .opc2 = 0,
3270 .access = PL2_RW, .fieldoffset = offsetof(CPUARMState, cp15.esr_el[2]) },
3271 { .name = "IFSR32_EL2", .state = ARM_CP_STATE_AA64,
3272 .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 0, .opc2 = 1,
3273 .access = PL2_RW, .resetvalue = 0,
3274 .fieldoffset = offsetof(CPUARMState, cp15.ifsr32_el2) },
3275 { .name = "FAR_EL2", .state = ARM_CP_STATE_AA64,
3276 .opc0 = 3, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 0,
3277 .access = PL2_RW, .fieldoffset = offsetof(CPUARMState, cp15.far_el[2]) },
3278 { .name = "SPSR_EL2", .state = ARM_CP_STATE_AA64,
3279 .type = ARM_CP_ALIAS,
3280 .opc0 = 3, .opc1 = 4, .crn = 4, .crm = 0, .opc2 = 0,
3281 .access = PL2_RW, .fieldoffset = offsetof(CPUARMState, banked_spsr[6]) },
3282 { .name = "VBAR_EL2", .state = ARM_CP_STATE_AA64,
3283 .opc0 = 3, .opc1 = 4, .crn = 12, .crm = 0, .opc2 = 0,
3284 .access = PL2_RW, .writefn = vbar_write,
3285 .fieldoffset = offsetof(CPUARMState, cp15.vbar_el[2]),
3287 { .name = "SP_EL2", .state = ARM_CP_STATE_AA64,
3288 .opc0 = 3, .opc1 = 6, .crn = 4, .crm = 1, .opc2 = 0,
3289 .access = PL3_RW, .type = ARM_CP_ALIAS,
3290 .fieldoffset = offsetof(CPUARMState, sp_el[2]) },
3291 { .name = "CPTR_EL2", .state = ARM_CP_STATE_BOTH,
3292 .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 2,
3293 .access = PL2_RW, .accessfn = cptr_access, .resetvalue = 0,
3294 .fieldoffset = offsetof(CPUARMState, cp15.cptr_el[2]) },
3295 { .name = "MAIR_EL2", .state = ARM_CP_STATE_BOTH,
3296 .opc0 = 3, .opc1 = 4, .crn = 10, .crm = 2, .opc2 = 0,
3297 .access = PL2_RW, .fieldoffset = offsetof(CPUARMState, cp15.mair_el[2]),
3299 { .name = "HMAIR1", .state = ARM_CP_STATE_AA32,
3300 .opc1 = 4, .crn = 10, .crm = 2, .opc2 = 1,
3301 .access = PL2_RW, .type = ARM_CP_ALIAS,
3302 .fieldoffset = offsetofhigh32(CPUARMState, cp15.mair_el[2]) },
3303 { .name = "AMAIR_EL2", .state = ARM_CP_STATE_BOTH,
3304 .opc0 = 3, .opc1 = 4, .crn = 10, .crm = 3, .opc2 = 0,
3305 .access = PL2_RW, .type = ARM_CP_CONST,
3307 /* HAMAIR1 is mapped to AMAIR_EL2[63:32] */
3308 { .name = "HMAIR1", .state = ARM_CP_STATE_AA32,
3309 .opc1 = 4, .crn = 10, .crm = 3, .opc2 = 1,
3310 .access = PL2_RW, .type = ARM_CP_CONST,
3312 { .name = "AFSR0_EL2", .state = ARM_CP_STATE_BOTH,
3313 .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 1, .opc2 = 0,
3314 .access = PL2_RW, .type = ARM_CP_CONST,
3316 { .name = "AFSR1_EL2", .state = ARM_CP_STATE_BOTH,
3317 .opc0 = 3, .opc1 = 4, .crn = 5, .crm = 1, .opc2 = 1,
3318 .access = PL2_RW, .type = ARM_CP_CONST,
3320 { .name = "TCR_EL2", .state = ARM_CP_STATE_BOTH,
3321 .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 0, .opc2 = 2,
3322 .access = PL2_RW, .writefn = vmsa_tcr_el1_write,
3323 .resetfn = vmsa_ttbcr_reset, .raw_writefn = raw_write,
3324 .fieldoffset = offsetof(CPUARMState, cp15.tcr_el[2]) },
3325 { .name = "VTCR", .state = ARM_CP_STATE_AA32,
3326 .cp = 15, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 2,
3327 .access = PL2_RW, .accessfn = access_el3_aa32ns,
3328 .fieldoffset = offsetof(CPUARMState, cp15.vtcr_el2) },
3329 { .name = "VTCR_EL2", .state = ARM_CP_STATE_AA64,
3330 .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 2,
3331 .access = PL2_RW, .type = ARM_CP_ALIAS,
3332 .fieldoffset = offsetof(CPUARMState, cp15.vtcr_el2) },
3333 { .name = "VTTBR", .state = ARM_CP_STATE_AA32,
3334 .cp = 15, .opc1 = 6, .crm = 2,
3335 .type = ARM_CP_64BIT | ARM_CP_ALIAS,
3336 .access = PL2_RW, .accessfn = access_el3_aa32ns,
3337 .fieldoffset = offsetof(CPUARMState, cp15.vttbr_el2),
3338 .writefn = vttbr_write },
3339 { .name = "VTTBR_EL2", .state = ARM_CP_STATE_AA64,
3340 .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 1, .opc2 = 0,
3341 .access = PL2_RW, .writefn = vttbr_write,
3342 .fieldoffset = offsetof(CPUARMState, cp15.vttbr_el2) },
3343 { .name = "SCTLR_EL2", .state = ARM_CP_STATE_BOTH,
3344 .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 0, .opc2 = 0,
3345 .access = PL2_RW, .raw_writefn = raw_write, .writefn = sctlr_write,
3346 .fieldoffset = offsetof(CPUARMState, cp15.sctlr_el[2]) },
3347 { .name = "TPIDR_EL2", .state = ARM_CP_STATE_BOTH,
3348 .opc0 = 3, .opc1 = 4, .crn = 13, .crm = 0, .opc2 = 2,
3349 .access = PL2_RW, .resetvalue = 0,
3350 .fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[2]) },
3351 { .name = "TTBR0_EL2", .state = ARM_CP_STATE_AA64,
3352 .opc0 = 3, .opc1 = 4, .crn = 2, .crm = 0, .opc2 = 0,
3353 .access = PL2_RW, .resetvalue = 0,
3354 .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[2]) },
3355 { .name = "HTTBR", .cp = 15, .opc1 = 4, .crm = 2,
3356 .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS,
3357 .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[2]) },
3358 { .name = "TLBI_ALLE2", .state = ARM_CP_STATE_AA64,
3359 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 0,
3360 .type = ARM_CP_NO_RAW, .access = PL2_W,
3361 .writefn = tlbi_aa64_alle2_write },
3362 { .name = "TLBI_VAE2", .state = ARM_CP_STATE_AA64,
3363 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 1,
3364 .type = ARM_CP_NO_RAW, .access = PL2_W,
3365 .writefn = tlbi_aa64_vae2_write },
3366 { .name = "TLBI_VALE2", .state = ARM_CP_STATE_AA64,
3367 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 7, .opc2 = 5,
3368 .access = PL2_W, .type = ARM_CP_NO_RAW,
3369 .writefn = tlbi_aa64_vae2_write },
3370 { .name = "TLBI_ALLE2IS", .state = ARM_CP_STATE_AA64,
3371 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 0,
3372 .access = PL2_W, .type = ARM_CP_NO_RAW,
3373 .writefn = tlbi_aa64_alle2is_write },
3374 { .name = "TLBI_VAE2IS", .state = ARM_CP_STATE_AA64,
3375 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 1,
3376 .type = ARM_CP_NO_RAW, .access = PL2_W,
3377 .writefn = tlbi_aa64_vae2is_write },
3378 { .name = "TLBI_VALE2IS", .state = ARM_CP_STATE_AA64,
3379 .opc0 = 1, .opc1 = 4, .crn = 8, .crm = 3, .opc2 = 5,
3380 .access = PL2_W, .type = ARM_CP_NO_RAW,
3381 .writefn = tlbi_aa64_vae2is_write },
3382 #ifndef CONFIG_USER_ONLY
3383 /* Unlike the other EL2-related AT operations, these must
3384 * UNDEF from EL3 if EL2 is not implemented, which is why we
3385 * define them here rather than with the rest of the AT ops.
3387 { .name = "AT_S1E2R", .state = ARM_CP_STATE_AA64,
3388 .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 0,
3389 .access = PL2_W, .accessfn = at_s1e2_access,
3390 .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3391 { .name = "AT_S1E2W", .state = ARM_CP_STATE_AA64,
3392 .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 1,
3393 .access = PL2_W, .accessfn = at_s1e2_access,
3394 .type = ARM_CP_NO_RAW, .writefn = ats_write64 },
3395 /* The AArch32 ATS1H* operations are CONSTRAINED UNPREDICTABLE
3396 * if EL2 is not implemented; we choose to UNDEF. Behaviour at EL3
3397 * with SCR.NS == 0 outside Monitor mode is UNPREDICTABLE; we choose
3398 * to behave as if SCR.NS was 1.
3400 { .name = "ATS1HR", .cp = 15, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 0,
3402 .writefn = ats1h_write, .type = ARM_CP_NO_RAW },
3403 { .name = "ATS1HW", .cp = 15, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 1,
3405 .writefn = ats1h_write, .type = ARM_CP_NO_RAW },
3406 { .name = "CNTHCTL_EL2", .state = ARM_CP_STATE_BOTH,
3407 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 1, .opc2 = 0,
3408 /* ARMv7 requires bit 0 and 1 to reset to 1. ARMv8 defines the
3409 * reset values as IMPDEF. We choose to reset to 3 to comply with
3410 * both ARMv7 and ARMv8.
3412 .access = PL2_RW, .resetvalue = 3,
3413 .fieldoffset = offsetof(CPUARMState, cp15.cnthctl_el2) },
3414 { .name = "CNTVOFF_EL2", .state = ARM_CP_STATE_AA64,
3415 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 0, .opc2 = 3,
3416 .access = PL2_RW, .type = ARM_CP_IO, .resetvalue = 0,
3417 .writefn = gt_cntvoff_write,
3418 .fieldoffset = offsetof(CPUARMState, cp15.cntvoff_el2) },
3419 { .name = "CNTVOFF", .cp = 15, .opc1 = 4, .crm = 14,
3420 .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_ALIAS | ARM_CP_IO,
3421 .writefn = gt_cntvoff_write,
3422 .fieldoffset = offsetof(CPUARMState, cp15.cntvoff_el2) },
3423 { .name = "CNTHP_CVAL_EL2", .state = ARM_CP_STATE_AA64,
3424 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 2,
3425 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_HYP].cval),
3426 .type = ARM_CP_IO, .access = PL2_RW,
3427 .writefn = gt_hyp_cval_write, .raw_writefn = raw_write },
3428 { .name = "CNTHP_CVAL", .cp = 15, .opc1 = 6, .crm = 14,
3429 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_HYP].cval),
3430 .access = PL2_RW, .type = ARM_CP_64BIT | ARM_CP_IO,
3431 .writefn = gt_hyp_cval_write, .raw_writefn = raw_write },
3432 { .name = "CNTHP_TVAL_EL2", .state = ARM_CP_STATE_BOTH,
3433 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 0,
3434 .type = ARM_CP_IO, .access = PL2_RW,
3435 .resetfn = gt_hyp_timer_reset,
3436 .readfn = gt_hyp_tval_read, .writefn = gt_hyp_tval_write },
3437 { .name = "CNTHP_CTL_EL2", .state = ARM_CP_STATE_BOTH,
3439 .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 2, .opc2 = 1,
3441 .fieldoffset = offsetof(CPUARMState, cp15.c14_timer[GTIMER_HYP].ctl),
3443 .writefn = gt_hyp_ctl_write, .raw_writefn = raw_write },
3448 static const ARMCPRegInfo el3_cp_reginfo[] = {
3449 { .name = "SCR_EL3", .state = ARM_CP_STATE_AA64,
3450 .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 1, .opc2 = 0,
3451 .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.scr_el3),
3452 .resetvalue = 0, .writefn = scr_write },
3453 { .name = "SCR", .type = ARM_CP_ALIAS,
3454 .cp = 15, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 0,
3455 .access = PL3_RW, .fieldoffset = offsetoflow32(CPUARMState, cp15.scr_el3),
3456 .writefn = scr_write },
3457 { .name = "SDER32_EL3", .state = ARM_CP_STATE_AA64,
3458 .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 1, .opc2 = 1,
3459 .access = PL3_RW, .resetvalue = 0,
3460 .fieldoffset = offsetof(CPUARMState, cp15.sder) },
3462 .cp = 15, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 1,
3463 .access = PL3_RW, .resetvalue = 0,
3464 .fieldoffset = offsetoflow32(CPUARMState, cp15.sder) },
3465 /* TODO: Implement NSACR trapping of secure EL1 accesses to EL3 */
3466 { .name = "NSACR", .cp = 15, .opc1 = 0, .crn = 1, .crm = 1, .opc2 = 2,
3467 .access = PL3_W | PL1_R, .resetvalue = 0,
3468 .fieldoffset = offsetof(CPUARMState, cp15.nsacr) },
3469 { .name = "MVBAR", .cp = 15, .opc1 = 0, .crn = 12, .crm = 0, .opc2 = 1,
3470 .access = PL3_RW, .writefn = vbar_write, .resetvalue = 0,
3471 .fieldoffset = offsetof(CPUARMState, cp15.mvbar) },
3472 { .name = "SCTLR_EL3", .state = ARM_CP_STATE_AA64,
3473 .type = ARM_CP_ALIAS, /* reset handled by AArch32 view */
3474 .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 0, .opc2 = 0,
3475 .access = PL3_RW, .raw_writefn = raw_write, .writefn = sctlr_write,
3476 .fieldoffset = offsetof(CPUARMState, cp15.sctlr_el[3]) },
3477 { .name = "TTBR0_EL3", .state = ARM_CP_STATE_AA64,
3478 .opc0 = 3, .opc1 = 6, .crn = 2, .crm = 0, .opc2 = 0,
3479 .access = PL3_RW, .writefn = vmsa_ttbr_write, .resetvalue = 0,
3480 .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[3]) },
3481 { .name = "TCR_EL3", .state = ARM_CP_STATE_AA64,
3482 .opc0 = 3, .opc1 = 6, .crn = 2, .crm = 0, .opc2 = 2,
3483 .access = PL3_RW, .writefn = vmsa_tcr_el1_write,
3484 .resetfn = vmsa_ttbcr_reset, .raw_writefn = raw_write,
3485 .fieldoffset = offsetof(CPUARMState, cp15.tcr_el[3]) },
3486 { .name = "ELR_EL3", .state = ARM_CP_STATE_AA64,
3487 .type = ARM_CP_ALIAS,
3488 .opc0 = 3, .opc1 = 6, .crn = 4, .crm = 0, .opc2 = 1,
3490 .fieldoffset = offsetof(CPUARMState, elr_el[3]) },
3491 { .name = "ESR_EL3", .state = ARM_CP_STATE_AA64,
3492 .type = ARM_CP_ALIAS,
3493 .opc0 = 3, .opc1 = 6, .crn = 5, .crm = 2, .opc2 = 0,
3494 .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.esr_el[3]) },
3495 { .name = "FAR_EL3", .state = ARM_CP_STATE_AA64,
3496 .opc0 = 3, .opc1 = 6, .crn = 6, .crm = 0, .opc2 = 0,
3497 .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, cp15.far_el[3]) },
3498 { .name = "SPSR_EL3", .state = ARM_CP_STATE_AA64,
3499 .type = ARM_CP_ALIAS,
3500 .opc0 = 3, .opc1 = 6, .crn = 4, .crm = 0, .opc2 = 0,
3501 .access = PL3_RW, .fieldoffset = offsetof(CPUARMState, banked_spsr[7]) },
3502 { .name = "VBAR_EL3", .state = ARM_CP_STATE_AA64,
3503 .opc0 = 3, .opc1 = 6, .crn = 12, .crm = 0, .opc2 = 0,
3504 .access = PL3_RW, .writefn = vbar_write,
3505 .fieldoffset = offsetof(CPUARMState, cp15.vbar_el[3]),
3507 { .name = "CPTR_EL3", .state = ARM_CP_STATE_AA64,
3508 .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 1, .opc2 = 2,
3509 .access = PL3_RW, .accessfn = cptr_access, .resetvalue = 0,
3510 .fieldoffset = offsetof(CPUARMState, cp15.cptr_el[3]) },
3511 { .name = "TPIDR_EL3", .state = ARM_CP_STATE_AA64,
3512 .opc0 = 3, .opc1 = 6, .crn = 13, .crm = 0, .opc2 = 2,
3513 .access = PL3_RW, .resetvalue = 0,
3514 .fieldoffset = offsetof(CPUARMState, cp15.tpidr_el[3]) },
3515 { .name = "AMAIR_EL3", .state = ARM_CP_STATE_AA64,
3516 .opc0 = 3, .opc1 = 6, .crn = 10, .crm = 3, .opc2 = 0,
3517 .access = PL3_RW, .type = ARM_CP_CONST,
3519 { .name = "AFSR0_EL3", .state = ARM_CP_STATE_BOTH,
3520 .opc0 = 3, .opc1 = 6, .crn = 5, .crm = 1, .opc2 = 0,
3521 .access = PL3_RW, .type = ARM_CP_CONST,
3523 { .name = "AFSR1_EL3", .state = ARM_CP_STATE_BOTH,
3524 .opc0 = 3, .opc1 = 6, .crn = 5, .crm = 1, .opc2 = 1,
3525 .access = PL3_RW, .type = ARM_CP_CONST,
3527 { .name = "TLBI_ALLE3IS", .state = ARM_CP_STATE_AA64,
3528 .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 3, .opc2 = 0,
3529 .access = PL3_W, .type = ARM_CP_NO_RAW,
3530 .writefn = tlbi_aa64_alle3is_write },
3531 { .name = "TLBI_VAE3IS", .state = ARM_CP_STATE_AA64,
3532 .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 3, .opc2 = 1,
3533 .access = PL3_W, .type = ARM_CP_NO_RAW,
3534 .writefn = tlbi_aa64_vae3is_write },
3535 { .name = "TLBI_VALE3IS", .state = ARM_CP_STATE_AA64,
3536 .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 3, .opc2 = 5,
3537 .access = PL3_W, .type = ARM_CP_NO_RAW,
3538 .writefn = tlbi_aa64_vae3is_write },
3539 { .name = "TLBI_ALLE3", .state = ARM_CP_STATE_AA64,
3540 .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 7, .opc2 = 0,
3541 .access = PL3_W, .type = ARM_CP_NO_RAW,
3542 .writefn = tlbi_aa64_alle3_write },
3543 { .name = "TLBI_VAE3", .state = ARM_CP_STATE_AA64,
3544 .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 7, .opc2 = 1,
3545 .access = PL3_W, .type = ARM_CP_NO_RAW,
3546 .writefn = tlbi_aa64_vae3_write },
3547 { .name = "TLBI_VALE3", .state = ARM_CP_STATE_AA64,
3548 .opc0 = 1, .opc1 = 6, .crn = 8, .crm = 7, .opc2 = 5,
3549 .access = PL3_W, .type = ARM_CP_NO_RAW,
3550 .writefn = tlbi_aa64_vae3_write },
3554 static CPAccessResult ctr_el0_access(CPUARMState *env, const ARMCPRegInfo *ri)
3556 /* Only accessible in EL0 if SCTLR.UCT is set (and only in AArch64,
3557 * but the AArch32 CTR has its own reginfo struct)
3559 if (arm_current_el(env) == 0 && !(env->cp15.sctlr_el[1] & SCTLR_UCT)) {
3560 return CP_ACCESS_TRAP;
3562 return CP_ACCESS_OK;
3565 static const ARMCPRegInfo debug_cp_reginfo[] = {
3566 /* DBGDRAR, DBGDSAR: always RAZ since we don't implement memory mapped
3567 * debug components. The AArch64 version of DBGDRAR is named MDRAR_EL1;
3568 * unlike DBGDRAR it is never accessible from EL0.
3569 * DBGDSAR is deprecated and must RAZ from v8 anyway, so it has no AArch64
3572 { .name = "DBGDRAR", .cp = 14, .crn = 1, .crm = 0, .opc1 = 0, .opc2 = 0,
3573 .access = PL0_R, .type = ARM_CP_CONST, .resetvalue = 0 },
3574 { .name = "MDRAR_EL1", .state = ARM_CP_STATE_AA64,
3575 .opc0 = 2, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 0,
3576 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
3577 { .name = "DBGDSAR", .cp = 14, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 0,
3578 .access = PL0_R, .type = ARM_CP_CONST, .resetvalue = 0 },
3579 /* Monitor debug system control register; the 32-bit alias is DBGDSCRext. */
3580 { .name = "MDSCR_EL1", .state = ARM_CP_STATE_BOTH,
3581 .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 2,
3583 .fieldoffset = offsetof(CPUARMState, cp15.mdscr_el1),
3585 /* MDCCSR_EL0, aka DBGDSCRint. This is a read-only mirror of MDSCR_EL1.
3586 * We don't implement the configurable EL0 access.
3588 { .name = "MDCCSR_EL0", .state = ARM_CP_STATE_BOTH,
3589 .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 0,
3590 .type = ARM_CP_ALIAS,
3592 .fieldoffset = offsetof(CPUARMState, cp15.mdscr_el1), },
3593 /* We define a dummy WI OSLAR_EL1, because Linux writes to it. */
3594 { .name = "OSLAR_EL1", .state = ARM_CP_STATE_BOTH,
3595 .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 4,
3596 .access = PL1_W, .type = ARM_CP_NOP },
3597 /* Dummy OSDLR_EL1: 32-bit Linux will read this */
3598 { .name = "OSDLR_EL1", .state = ARM_CP_STATE_BOTH,
3599 .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 1, .crm = 3, .opc2 = 4,
3600 .access = PL1_RW, .type = ARM_CP_NOP },
3601 /* Dummy DBGVCR: Linux wants to clear this on startup, but we don't
3602 * implement vector catch debug events yet.
3605 .cp = 14, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 0,
3606 .access = PL1_RW, .type = ARM_CP_NOP },
3610 static const ARMCPRegInfo debug_lpae_cp_reginfo[] = {
3611 /* 64 bit access versions of the (dummy) debug registers */
3612 { .name = "DBGDRAR", .cp = 14, .crm = 1, .opc1 = 0,
3613 .access = PL0_R, .type = ARM_CP_CONST|ARM_CP_64BIT, .resetvalue = 0 },
3614 { .name = "DBGDSAR", .cp = 14, .crm = 2, .opc1 = 0,
3615 .access = PL0_R, .type = ARM_CP_CONST|ARM_CP_64BIT, .resetvalue = 0 },
3619 void hw_watchpoint_update(ARMCPU *cpu, int n)
3621 CPUARMState *env = &cpu->env;
3623 vaddr wvr = env->cp15.dbgwvr[n];
3624 uint64_t wcr = env->cp15.dbgwcr[n];
3626 int flags = BP_CPU | BP_STOP_BEFORE_ACCESS;
3628 if (env->cpu_watchpoint[n]) {
3629 cpu_watchpoint_remove_by_ref(CPU(cpu), env->cpu_watchpoint[n]);
3630 env->cpu_watchpoint[n] = NULL;
3633 if (!extract64(wcr, 0, 1)) {
3634 /* E bit clear : watchpoint disabled */
3638 switch (extract64(wcr, 3, 2)) {
3640 /* LSC 00 is reserved and must behave as if the wp is disabled */
3643 flags |= BP_MEM_READ;
3646 flags |= BP_MEM_WRITE;
3649 flags |= BP_MEM_ACCESS;
3653 /* Attempts to use both MASK and BAS fields simultaneously are
3654 * CONSTRAINED UNPREDICTABLE; we opt to ignore BAS in this case,
3655 * thus generating a watchpoint for every byte in the masked region.
3657 mask = extract64(wcr, 24, 4);
3658 if (mask == 1 || mask == 2) {
3659 /* Reserved values of MASK; we must act as if the mask value was
3660 * some non-reserved value, or as if the watchpoint were disabled.
3661 * We choose the latter.
3665 /* Watchpoint covers an aligned area up to 2GB in size */
3667 /* If masked bits in WVR are not zero it's CONSTRAINED UNPREDICTABLE
3668 * whether the watchpoint fires when the unmasked bits match; we opt
3669 * to generate the exceptions.
3673 /* Watchpoint covers bytes defined by the byte address select bits */
3674 int bas = extract64(wcr, 5, 8);
3678 /* This must act as if the watchpoint is disabled */
3682 if (extract64(wvr, 2, 1)) {
3683 /* Deprecated case of an only 4-aligned address. BAS[7:4] are
3684 * ignored, and BAS[3:0] define which bytes to watch.
3688 /* The BAS bits are supposed to be programmed to indicate a contiguous
3689 * range of bytes. Otherwise it is CONSTRAINED UNPREDICTABLE whether
3690 * we fire for each byte in the word/doubleword addressed by the WVR.
3691 * We choose to ignore any non-zero bits after the first range of 1s.
3693 basstart = ctz32(bas);
3694 len = cto32(bas >> basstart);
3698 cpu_watchpoint_insert(CPU(cpu), wvr, len, flags,
3699 &env->cpu_watchpoint[n]);
3702 void hw_watchpoint_update_all(ARMCPU *cpu)
3705 CPUARMState *env = &cpu->env;
3707 /* Completely clear out existing QEMU watchpoints and our array, to
3708 * avoid possible stale entries following migration load.
3710 cpu_watchpoint_remove_all(CPU(cpu), BP_CPU);
3711 memset(env->cpu_watchpoint, 0, sizeof(env->cpu_watchpoint));
3713 for (i = 0; i < ARRAY_SIZE(cpu->env.cpu_watchpoint); i++) {
3714 hw_watchpoint_update(cpu, i);
3718 static void dbgwvr_write(CPUARMState *env, const ARMCPRegInfo *ri,
3721 ARMCPU *cpu = arm_env_get_cpu(env);
3724 /* Bits [63:49] are hardwired to the value of bit [48]; that is, the
3725 * register reads and behaves as if values written are sign extended.
3726 * Bits [1:0] are RES0.
3728 value = sextract64(value, 0, 49) & ~3ULL;
3730 raw_write(env, ri, value);
3731 hw_watchpoint_update(cpu, i);
3734 static void dbgwcr_write(CPUARMState *env, const ARMCPRegInfo *ri,
3737 ARMCPU *cpu = arm_env_get_cpu(env);
3740 raw_write(env, ri, value);
3741 hw_watchpoint_update(cpu, i);
3744 void hw_breakpoint_update(ARMCPU *cpu, int n)
3746 CPUARMState *env = &cpu->env;
3747 uint64_t bvr = env->cp15.dbgbvr[n];
3748 uint64_t bcr = env->cp15.dbgbcr[n];
3753 if (env->cpu_breakpoint[n]) {
3754 cpu_breakpoint_remove_by_ref(CPU(cpu), env->cpu_breakpoint[n]);
3755 env->cpu_breakpoint[n] = NULL;
3758 if (!extract64(bcr, 0, 1)) {
3759 /* E bit clear : watchpoint disabled */
3763 bt = extract64(bcr, 20, 4);
3766 case 4: /* unlinked address mismatch (reserved if AArch64) */
3767 case 5: /* linked address mismatch (reserved if AArch64) */
3768 qemu_log_mask(LOG_UNIMP,
3769 "arm: address mismatch breakpoint types not implemented");
3771 case 0: /* unlinked address match */
3772 case 1: /* linked address match */
3774 /* Bits [63:49] are hardwired to the value of bit [48]; that is,
3775 * we behave as if the register was sign extended. Bits [1:0] are
3776 * RES0. The BAS field is used to allow setting breakpoints on 16
3777 * bit wide instructions; it is CONSTRAINED UNPREDICTABLE whether
3778 * a bp will fire if the addresses covered by the bp and the addresses
3779 * covered by the insn overlap but the insn doesn't start at the
3780 * start of the bp address range. We choose to require the insn and
3781 * the bp to have the same address. The constraints on writing to
3782 * BAS enforced in dbgbcr_write mean we have only four cases:
3783 * 0b0000 => no breakpoint
3784 * 0b0011 => breakpoint on addr
3785 * 0b1100 => breakpoint on addr + 2
3786 * 0b1111 => breakpoint on addr
3787 * See also figure D2-3 in the v8 ARM ARM (DDI0487A.c).
3789 int bas = extract64(bcr, 5, 4);
3790 addr = sextract64(bvr, 0, 49) & ~3ULL;
3799 case 2: /* unlinked context ID match */
3800 case 8: /* unlinked VMID match (reserved if no EL2) */
3801 case 10: /* unlinked context ID and VMID match (reserved if no EL2) */
3802 qemu_log_mask(LOG_UNIMP,
3803 "arm: unlinked context breakpoint types not implemented");
3805 case 9: /* linked VMID match (reserved if no EL2) */
3806 case 11: /* linked context ID and VMID match (reserved if no EL2) */
3807 case 3: /* linked context ID match */
3809 /* We must generate no events for Linked context matches (unless
3810 * they are linked to by some other bp/wp, which is handled in
3811 * updates for the linking bp/wp). We choose to also generate no events
3812 * for reserved values.
3817 cpu_breakpoint_insert(CPU(cpu), addr, flags, &env->cpu_breakpoint[n]);
3820 void hw_breakpoint_update_all(ARMCPU *cpu)
3823 CPUARMState *env = &cpu->env;
3825 /* Completely clear out existing QEMU breakpoints and our array, to
3826 * avoid possible stale entries following migration load.
3828 cpu_breakpoint_remove_all(CPU(cpu), BP_CPU);
3829 memset(env->cpu_breakpoint, 0, sizeof(env->cpu_breakpoint));
3831 for (i = 0; i < ARRAY_SIZE(cpu->env.cpu_breakpoint); i++) {
3832 hw_breakpoint_update(cpu, i);
3836 static void dbgbvr_write(CPUARMState *env, const ARMCPRegInfo *ri,
3839 ARMCPU *cpu = arm_env_get_cpu(env);
3842 raw_write(env, ri, value);
3843 hw_breakpoint_update(cpu, i);
3846 static void dbgbcr_write(CPUARMState *env, const ARMCPRegInfo *ri,
3849 ARMCPU *cpu = arm_env_get_cpu(env);
3852 /* BAS[3] is a read-only copy of BAS[2], and BAS[1] a read-only
3855 value = deposit64(value, 6, 1, extract64(value, 5, 1));
3856 value = deposit64(value, 8, 1, extract64(value, 7, 1));
3858 raw_write(env, ri, value);
3859 hw_breakpoint_update(cpu, i);
3862 static void define_debug_regs(ARMCPU *cpu)
3864 /* Define v7 and v8 architectural debug registers.
3865 * These are just dummy implementations for now.
3868 int wrps, brps, ctx_cmps;
3869 ARMCPRegInfo dbgdidr = {
3870 .name = "DBGDIDR", .cp = 14, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 0,
3871 .access = PL0_R, .type = ARM_CP_CONST, .resetvalue = cpu->dbgdidr,
3874 /* Note that all these register fields hold "number of Xs minus 1". */
3875 brps = extract32(cpu->dbgdidr, 24, 4);
3876 wrps = extract32(cpu->dbgdidr, 28, 4);
3877 ctx_cmps = extract32(cpu->dbgdidr, 20, 4);
3879 assert(ctx_cmps <= brps);
3881 /* The DBGDIDR and ID_AA64DFR0_EL1 define various properties
3882 * of the debug registers such as number of breakpoints;
3883 * check that if they both exist then they agree.
3885 if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) {
3886 assert(extract32(cpu->id_aa64dfr0, 12, 4) == brps);
3887 assert(extract32(cpu->id_aa64dfr0, 20, 4) == wrps);
3888 assert(extract32(cpu->id_aa64dfr0, 28, 4) == ctx_cmps);
3891 define_one_arm_cp_reg(cpu, &dbgdidr);
3892 define_arm_cp_regs(cpu, debug_cp_reginfo);
3894 if (arm_feature(&cpu->env, ARM_FEATURE_LPAE)) {
3895 define_arm_cp_regs(cpu, debug_lpae_cp_reginfo);
3898 for (i = 0; i < brps + 1; i++) {
3899 ARMCPRegInfo dbgregs[] = {
3900 { .name = "DBGBVR", .state = ARM_CP_STATE_BOTH,
3901 .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 4,
3903 .fieldoffset = offsetof(CPUARMState, cp15.dbgbvr[i]),
3904 .writefn = dbgbvr_write, .raw_writefn = raw_write
3906 { .name = "DBGBCR", .state = ARM_CP_STATE_BOTH,
3907 .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 5,
3909 .fieldoffset = offsetof(CPUARMState, cp15.dbgbcr[i]),
3910 .writefn = dbgbcr_write, .raw_writefn = raw_write
3914 define_arm_cp_regs(cpu, dbgregs);
3917 for (i = 0; i < wrps + 1; i++) {
3918 ARMCPRegInfo dbgregs[] = {
3919 { .name = "DBGWVR", .state = ARM_CP_STATE_BOTH,
3920 .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 6,
3922 .fieldoffset = offsetof(CPUARMState, cp15.dbgwvr[i]),
3923 .writefn = dbgwvr_write, .raw_writefn = raw_write
3925 { .name = "DBGWCR", .state = ARM_CP_STATE_BOTH,
3926 .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 7,
3928 .fieldoffset = offsetof(CPUARMState, cp15.dbgwcr[i]),
3929 .writefn = dbgwcr_write, .raw_writefn = raw_write
3933 define_arm_cp_regs(cpu, dbgregs);
3937 void register_cp_regs_for_features(ARMCPU *cpu)
3939 /* Register all the coprocessor registers based on feature bits */
3940 CPUARMState *env = &cpu->env;
3941 if (arm_feature(env, ARM_FEATURE_M)) {
3942 /* M profile has no coprocessor registers */
3946 define_arm_cp_regs(cpu, cp_reginfo);
3947 if (!arm_feature(env, ARM_FEATURE_V8)) {
3948 /* Must go early as it is full of wildcards that may be
3949 * overridden by later definitions.
3951 define_arm_cp_regs(cpu, not_v8_cp_reginfo);
3954 if (arm_feature(env, ARM_FEATURE_V6)) {
3955 /* The ID registers all have impdef reset values */
3956 ARMCPRegInfo v6_idregs[] = {
3957 { .name = "ID_PFR0", .state = ARM_CP_STATE_BOTH,
3958 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 0,
3959 .access = PL1_R, .type = ARM_CP_CONST,
3960 .resetvalue = cpu->id_pfr0 },
3961 { .name = "ID_PFR1", .state = ARM_CP_STATE_BOTH,
3962 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 1,
3963 .access = PL1_R, .type = ARM_CP_CONST,
3964 .resetvalue = cpu->id_pfr1 },
3965 { .name = "ID_DFR0", .state = ARM_CP_STATE_BOTH,
3966 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 2,
3967 .access = PL1_R, .type = ARM_CP_CONST,
3968 .resetvalue = cpu->id_dfr0 },
3969 { .name = "ID_AFR0", .state = ARM_CP_STATE_BOTH,
3970 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 3,
3971 .access = PL1_R, .type = ARM_CP_CONST,
3972 .resetvalue = cpu->id_afr0 },
3973 { .name = "ID_MMFR0", .state = ARM_CP_STATE_BOTH,
3974 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 4,
3975 .access = PL1_R, .type = ARM_CP_CONST,
3976 .resetvalue = cpu->id_mmfr0 },
3977 { .name = "ID_MMFR1", .state = ARM_CP_STATE_BOTH,
3978 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 5,
3979 .access = PL1_R, .type = ARM_CP_CONST,
3980 .resetvalue = cpu->id_mmfr1 },
3981 { .name = "ID_MMFR2", .state = ARM_CP_STATE_BOTH,
3982 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 6,
3983 .access = PL1_R, .type = ARM_CP_CONST,
3984 .resetvalue = cpu->id_mmfr2 },
3985 { .name = "ID_MMFR3", .state = ARM_CP_STATE_BOTH,
3986 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 1, .opc2 = 7,
3987 .access = PL1_R, .type = ARM_CP_CONST,
3988 .resetvalue = cpu->id_mmfr3 },
3989 { .name = "ID_ISAR0", .state = ARM_CP_STATE_BOTH,
3990 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 0,
3991 .access = PL1_R, .type = ARM_CP_CONST,
3992 .resetvalue = cpu->id_isar0 },
3993 { .name = "ID_ISAR1", .state = ARM_CP_STATE_BOTH,
3994 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 1,
3995 .access = PL1_R, .type = ARM_CP_CONST,
3996 .resetvalue = cpu->id_isar1 },
3997 { .name = "ID_ISAR2", .state = ARM_CP_STATE_BOTH,
3998 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 2,
3999 .access = PL1_R, .type = ARM_CP_CONST,
4000 .resetvalue = cpu->id_isar2 },
4001 { .name = "ID_ISAR3", .state = ARM_CP_STATE_BOTH,
4002 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 3,
4003 .access = PL1_R, .type = ARM_CP_CONST,
4004 .resetvalue = cpu->id_isar3 },
4005 { .name = "ID_ISAR4", .state = ARM_CP_STATE_BOTH,
4006 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 4,
4007 .access = PL1_R, .type = ARM_CP_CONST,
4008 .resetvalue = cpu->id_isar4 },
4009 { .name = "ID_ISAR5", .state = ARM_CP_STATE_BOTH,
4010 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 5,
4011 .access = PL1_R, .type = ARM_CP_CONST,
4012 .resetvalue = cpu->id_isar5 },
4013 /* 6..7 are as yet unallocated and must RAZ */
4014 { .name = "ID_ISAR6", .cp = 15, .crn = 0, .crm = 2,
4015 .opc1 = 0, .opc2 = 6, .access = PL1_R, .type = ARM_CP_CONST,
4017 { .name = "ID_ISAR7", .cp = 15, .crn = 0, .crm = 2,
4018 .opc1 = 0, .opc2 = 7, .access = PL1_R, .type = ARM_CP_CONST,
4022 define_arm_cp_regs(cpu, v6_idregs);
4023 define_arm_cp_regs(cpu, v6_cp_reginfo);
4025 define_arm_cp_regs(cpu, not_v6_cp_reginfo);
4027 if (arm_feature(env, ARM_FEATURE_V6K)) {
4028 define_arm_cp_regs(cpu, v6k_cp_reginfo);
4030 if (arm_feature(env, ARM_FEATURE_V7MP) &&
4031 !arm_feature(env, ARM_FEATURE_MPU)) {
4032 define_arm_cp_regs(cpu, v7mp_cp_reginfo);
4034 if (arm_feature(env, ARM_FEATURE_V7)) {
4035 /* v7 performance monitor control register: same implementor
4036 * field as main ID register, and we implement only the cycle
4039 #ifndef CONFIG_USER_ONLY
4040 ARMCPRegInfo pmcr = {
4041 .name = "PMCR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 0,
4043 .type = ARM_CP_IO | ARM_CP_ALIAS,
4044 .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pmcr),
4045 .accessfn = pmreg_access, .writefn = pmcr_write,
4046 .raw_writefn = raw_write,
4048 ARMCPRegInfo pmcr64 = {
4049 .name = "PMCR_EL0", .state = ARM_CP_STATE_AA64,
4050 .opc0 = 3, .opc1 = 3, .crn = 9, .crm = 12, .opc2 = 0,
4051 .access = PL0_RW, .accessfn = pmreg_access,
4053 .fieldoffset = offsetof(CPUARMState, cp15.c9_pmcr),
4054 .resetvalue = cpu->midr & 0xff000000,
4055 .writefn = pmcr_write, .raw_writefn = raw_write,
4057 define_one_arm_cp_reg(cpu, &pmcr);
4058 define_one_arm_cp_reg(cpu, &pmcr64);
4060 ARMCPRegInfo clidr = {
4061 .name = "CLIDR", .state = ARM_CP_STATE_BOTH,
4062 .opc0 = 3, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = 1,
4063 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = cpu->clidr
4065 define_one_arm_cp_reg(cpu, &clidr);
4066 define_arm_cp_regs(cpu, v7_cp_reginfo);
4067 define_debug_regs(cpu);
4069 define_arm_cp_regs(cpu, not_v7_cp_reginfo);
4071 if (arm_feature(env, ARM_FEATURE_V8)) {
4072 /* AArch64 ID registers, which all have impdef reset values */
4073 ARMCPRegInfo v8_idregs[] = {
4074 { .name = "ID_AA64PFR0_EL1", .state = ARM_CP_STATE_AA64,
4075 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 0,
4076 .access = PL1_R, .type = ARM_CP_CONST,
4077 .resetvalue = cpu->id_aa64pfr0 },
4078 { .name = "ID_AA64PFR1_EL1", .state = ARM_CP_STATE_AA64,
4079 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 4, .opc2 = 1,
4080 .access = PL1_R, .type = ARM_CP_CONST,
4081 .resetvalue = cpu->id_aa64pfr1},
4082 { .name = "ID_AA64DFR0_EL1", .state = ARM_CP_STATE_AA64,
4083 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 0,
4084 .access = PL1_R, .type = ARM_CP_CONST,
4085 /* We mask out the PMUVer field, because we don't currently
4086 * implement the PMU. Not advertising it prevents the guest
4087 * from trying to use it and getting UNDEFs on registers we
4090 .resetvalue = cpu->id_aa64dfr0 & ~0xf00 },
4091 { .name = "ID_AA64DFR1_EL1", .state = ARM_CP_STATE_AA64,
4092 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 1,
4093 .access = PL1_R, .type = ARM_CP_CONST,
4094 .resetvalue = cpu->id_aa64dfr1 },
4095 { .name = "ID_AA64AFR0_EL1", .state = ARM_CP_STATE_AA64,
4096 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 4,
4097 .access = PL1_R, .type = ARM_CP_CONST,
4098 .resetvalue = cpu->id_aa64afr0 },
4099 { .name = "ID_AA64AFR1_EL1", .state = ARM_CP_STATE_AA64,
4100 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 5, .opc2 = 5,
4101 .access = PL1_R, .type = ARM_CP_CONST,
4102 .resetvalue = cpu->id_aa64afr1 },
4103 { .name = "ID_AA64ISAR0_EL1", .state = ARM_CP_STATE_AA64,
4104 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 0,
4105 .access = PL1_R, .type = ARM_CP_CONST,
4106 .resetvalue = cpu->id_aa64isar0 },
4107 { .name = "ID_AA64ISAR1_EL1", .state = ARM_CP_STATE_AA64,
4108 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 6, .opc2 = 1,
4109 .access = PL1_R, .type = ARM_CP_CONST,
4110 .resetvalue = cpu->id_aa64isar1 },
4111 { .name = "ID_AA64MMFR0_EL1", .state = ARM_CP_STATE_AA64,
4112 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 0,
4113 .access = PL1_R, .type = ARM_CP_CONST,
4114 .resetvalue = cpu->id_aa64mmfr0 },
4115 { .name = "ID_AA64MMFR1_EL1", .state = ARM_CP_STATE_AA64,
4116 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 7, .opc2 = 1,
4117 .access = PL1_R, .type = ARM_CP_CONST,
4118 .resetvalue = cpu->id_aa64mmfr1 },
4119 { .name = "MVFR0_EL1", .state = ARM_CP_STATE_AA64,
4120 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 0,
4121 .access = PL1_R, .type = ARM_CP_CONST,
4122 .resetvalue = cpu->mvfr0 },
4123 { .name = "MVFR1_EL1", .state = ARM_CP_STATE_AA64,
4124 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 1,
4125 .access = PL1_R, .type = ARM_CP_CONST,
4126 .resetvalue = cpu->mvfr1 },
4127 { .name = "MVFR2_EL1", .state = ARM_CP_STATE_AA64,
4128 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 3, .opc2 = 2,
4129 .access = PL1_R, .type = ARM_CP_CONST,
4130 .resetvalue = cpu->mvfr2 },
4133 /* RVBAR_EL1 is only implemented if EL1 is the highest EL */
4134 if (!arm_feature(env, ARM_FEATURE_EL3) &&
4135 !arm_feature(env, ARM_FEATURE_EL2)) {
4136 ARMCPRegInfo rvbar = {
4137 .name = "RVBAR_EL1", .state = ARM_CP_STATE_AA64,
4138 .opc0 = 3, .opc1 = 0, .crn = 12, .crm = 0, .opc2 = 1,
4139 .type = ARM_CP_CONST, .access = PL1_R, .resetvalue = cpu->rvbar
4141 define_one_arm_cp_reg(cpu, &rvbar);
4143 define_arm_cp_regs(cpu, v8_idregs);
4144 define_arm_cp_regs(cpu, v8_cp_reginfo);
4146 if (arm_feature(env, ARM_FEATURE_EL2)) {
4147 uint64_t vmpidr_def = mpidr_read_val(env);
4148 ARMCPRegInfo vpidr_regs[] = {
4149 { .name = "VPIDR", .state = ARM_CP_STATE_AA32,
4150 .cp = 15, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 0,
4151 .access = PL2_RW, .accessfn = access_el3_aa32ns,
4152 .resetvalue = cpu->midr,
4153 .fieldoffset = offsetof(CPUARMState, cp15.vpidr_el2) },
4154 { .name = "VPIDR_EL2", .state = ARM_CP_STATE_AA64,
4155 .opc0 = 3, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 0,
4156 .access = PL2_RW, .resetvalue = cpu->midr,
4157 .fieldoffset = offsetof(CPUARMState, cp15.vpidr_el2) },
4158 { .name = "VMPIDR", .state = ARM_CP_STATE_AA32,
4159 .cp = 15, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 5,
4160 .access = PL2_RW, .accessfn = access_el3_aa32ns,
4161 .resetvalue = vmpidr_def,
4162 .fieldoffset = offsetof(CPUARMState, cp15.vmpidr_el2) },
4163 { .name = "VMPIDR_EL2", .state = ARM_CP_STATE_AA64,
4164 .opc0 = 3, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 5,
4166 .resetvalue = vmpidr_def,
4167 .fieldoffset = offsetof(CPUARMState, cp15.vmpidr_el2) },
4170 define_arm_cp_regs(cpu, vpidr_regs);
4171 define_arm_cp_regs(cpu, el2_cp_reginfo);
4172 /* RVBAR_EL2 is only implemented if EL2 is the highest EL */
4173 if (!arm_feature(env, ARM_FEATURE_EL3)) {
4174 ARMCPRegInfo rvbar = {
4175 .name = "RVBAR_EL2", .state = ARM_CP_STATE_AA64,
4176 .opc0 = 3, .opc1 = 4, .crn = 12, .crm = 0, .opc2 = 1,
4177 .type = ARM_CP_CONST, .access = PL2_R, .resetvalue = cpu->rvbar
4179 define_one_arm_cp_reg(cpu, &rvbar);
4182 /* If EL2 is missing but higher ELs are enabled, we need to
4183 * register the no_el2 reginfos.
4185 if (arm_feature(env, ARM_FEATURE_EL3)) {
4186 /* When EL3 exists but not EL2, VPIDR and VMPIDR take the value
4187 * of MIDR_EL1 and MPIDR_EL1.
4189 ARMCPRegInfo vpidr_regs[] = {
4190 { .name = "VPIDR_EL2", .state = ARM_CP_STATE_BOTH,
4191 .opc0 = 3, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 0,
4192 .access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any,
4193 .type = ARM_CP_CONST, .resetvalue = cpu->midr,
4194 .fieldoffset = offsetof(CPUARMState, cp15.vpidr_el2) },
4195 { .name = "VMPIDR_EL2", .state = ARM_CP_STATE_BOTH,
4196 .opc0 = 3, .opc1 = 4, .crn = 0, .crm = 0, .opc2 = 5,
4197 .access = PL2_RW, .accessfn = access_el3_aa32ns_aa64any,
4198 .type = ARM_CP_NO_RAW,
4199 .writefn = arm_cp_write_ignore, .readfn = mpidr_read },
4202 define_arm_cp_regs(cpu, vpidr_regs);
4203 define_arm_cp_regs(cpu, el3_no_el2_cp_reginfo);
4206 if (arm_feature(env, ARM_FEATURE_EL3)) {
4207 define_arm_cp_regs(cpu, el3_cp_reginfo);
4208 ARMCPRegInfo rvbar = {
4209 .name = "RVBAR_EL3", .state = ARM_CP_STATE_AA64,
4210 .opc0 = 3, .opc1 = 6, .crn = 12, .crm = 0, .opc2 = 1,
4211 .type = ARM_CP_CONST, .access = PL3_R, .resetvalue = cpu->rvbar
4213 define_one_arm_cp_reg(cpu, &rvbar);
4215 if (arm_feature(env, ARM_FEATURE_MPU)) {
4216 if (arm_feature(env, ARM_FEATURE_V6)) {
4217 /* PMSAv6 not implemented */
4218 assert(arm_feature(env, ARM_FEATURE_V7));
4219 define_arm_cp_regs(cpu, vmsa_pmsa_cp_reginfo);
4220 define_arm_cp_regs(cpu, pmsav7_cp_reginfo);
4222 define_arm_cp_regs(cpu, pmsav5_cp_reginfo);
4225 define_arm_cp_regs(cpu, vmsa_pmsa_cp_reginfo);
4226 define_arm_cp_regs(cpu, vmsa_cp_reginfo);
4228 if (arm_feature(env, ARM_FEATURE_THUMB2EE)) {
4229 define_arm_cp_regs(cpu, t2ee_cp_reginfo);
4231 if (arm_feature(env, ARM_FEATURE_GENERIC_TIMER)) {
4232 define_arm_cp_regs(cpu, generic_timer_cp_reginfo);
4234 if (arm_feature(env, ARM_FEATURE_VAPA)) {
4235 define_arm_cp_regs(cpu, vapa_cp_reginfo);
4237 if (arm_feature(env, ARM_FEATURE_CACHE_TEST_CLEAN)) {
4238 define_arm_cp_regs(cpu, cache_test_clean_cp_reginfo);
4240 if (arm_feature(env, ARM_FEATURE_CACHE_DIRTY_REG)) {
4241 define_arm_cp_regs(cpu, cache_dirty_status_cp_reginfo);
4243 if (arm_feature(env, ARM_FEATURE_CACHE_BLOCK_OPS)) {
4244 define_arm_cp_regs(cpu, cache_block_ops_cp_reginfo);
4246 if (arm_feature(env, ARM_FEATURE_OMAPCP)) {
4247 define_arm_cp_regs(cpu, omap_cp_reginfo);
4249 if (arm_feature(env, ARM_FEATURE_STRONGARM)) {
4250 define_arm_cp_regs(cpu, strongarm_cp_reginfo);
4252 if (arm_feature(env, ARM_FEATURE_XSCALE)) {
4253 define_arm_cp_regs(cpu, xscale_cp_reginfo);
4255 if (arm_feature(env, ARM_FEATURE_DUMMY_C15_REGS)) {
4256 define_arm_cp_regs(cpu, dummy_c15_cp_reginfo);
4258 if (arm_feature(env, ARM_FEATURE_LPAE)) {
4259 define_arm_cp_regs(cpu, lpae_cp_reginfo);
4261 /* Slightly awkwardly, the OMAP and StrongARM cores need all of
4262 * cp15 crn=0 to be writes-ignored, whereas for other cores they should
4263 * be read-only (ie write causes UNDEF exception).
4266 ARMCPRegInfo id_pre_v8_midr_cp_reginfo[] = {
4267 /* Pre-v8 MIDR space.
4268 * Note that the MIDR isn't a simple constant register because
4269 * of the TI925 behaviour where writes to another register can
4270 * cause the MIDR value to change.
4272 * Unimplemented registers in the c15 0 0 0 space default to
4273 * MIDR. Define MIDR first as this entire space, then CTR, TCMTR
4274 * and friends override accordingly.
4277 .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = CP_ANY,
4278 .access = PL1_R, .resetvalue = cpu->midr,
4279 .writefn = arm_cp_write_ignore, .raw_writefn = raw_write,
4280 .readfn = midr_read,
4281 .fieldoffset = offsetof(CPUARMState, cp15.c0_cpuid),
4282 .type = ARM_CP_OVERRIDE },
4283 /* crn = 0 op1 = 0 crm = 3..7 : currently unassigned; we RAZ. */
4285 .cp = 15, .crn = 0, .crm = 3, .opc1 = 0, .opc2 = CP_ANY,
4286 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
4288 .cp = 15, .crn = 0, .crm = 4, .opc1 = 0, .opc2 = CP_ANY,
4289 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
4291 .cp = 15, .crn = 0, .crm = 5, .opc1 = 0, .opc2 = CP_ANY,
4292 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
4294 .cp = 15, .crn = 0, .crm = 6, .opc1 = 0, .opc2 = CP_ANY,
4295 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
4297 .cp = 15, .crn = 0, .crm = 7, .opc1 = 0, .opc2 = CP_ANY,
4298 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
4301 ARMCPRegInfo id_v8_midr_cp_reginfo[] = {
4302 { .name = "MIDR_EL1", .state = ARM_CP_STATE_BOTH,
4303 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 0, .opc2 = 0,
4304 .access = PL1_R, .type = ARM_CP_NO_RAW, .resetvalue = cpu->midr,
4305 .fieldoffset = offsetof(CPUARMState, cp15.c0_cpuid),
4306 .readfn = midr_read },
4307 /* crn = 0 op1 = 0 crm = 0 op2 = 4,7 : AArch32 aliases of MIDR */
4308 { .name = "MIDR", .type = ARM_CP_ALIAS | ARM_CP_CONST,
4309 .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 4,
4310 .access = PL1_R, .resetvalue = cpu->midr },
4311 { .name = "MIDR", .type = ARM_CP_ALIAS | ARM_CP_CONST,
4312 .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 7,
4313 .access = PL1_R, .resetvalue = cpu->midr },
4314 { .name = "REVIDR_EL1", .state = ARM_CP_STATE_BOTH,
4315 .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 0, .opc2 = 6,
4316 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = cpu->revidr },
4319 ARMCPRegInfo id_cp_reginfo[] = {
4320 /* These are common to v8 and pre-v8 */
4322 .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 1,
4323 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = cpu->ctr },
4324 { .name = "CTR_EL0", .state = ARM_CP_STATE_AA64,
4325 .opc0 = 3, .opc1 = 3, .opc2 = 1, .crn = 0, .crm = 0,
4326 .access = PL0_R, .accessfn = ctr_el0_access,
4327 .type = ARM_CP_CONST, .resetvalue = cpu->ctr },
4328 /* TCMTR and TLBTR exist in v8 but have no 64-bit versions */
4330 .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 2,
4331 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
4334 /* TLBTR is specific to VMSA */
4335 ARMCPRegInfo id_tlbtr_reginfo = {
4337 .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 3,
4338 .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0,
4340 /* MPUIR is specific to PMSA V6+ */
4341 ARMCPRegInfo id_mpuir_reginfo = {
4343 .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 4,
4344 .access = PL1_R, .type = ARM_CP_CONST,
4345 .resetvalue = cpu->pmsav7_dregion << 8
4347 ARMCPRegInfo crn0_wi_reginfo = {
4348 .name = "CRN0_WI", .cp = 15, .crn = 0, .crm = CP_ANY,
4349 .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_W,
4350 .type = ARM_CP_NOP | ARM_CP_OVERRIDE
4352 if (arm_feature(env, ARM_FEATURE_OMAPCP) ||
4353 arm_feature(env, ARM_FEATURE_STRONGARM)) {
4355 /* Register the blanket "writes ignored" value first to cover the
4356 * whole space. Then update the specific ID registers to allow write
4357 * access, so that they ignore writes rather than causing them to
4360 define_one_arm_cp_reg(cpu, &crn0_wi_reginfo);
4361 for (r = id_pre_v8_midr_cp_reginfo;
4362 r->type != ARM_CP_SENTINEL; r++) {
4365 for (r = id_cp_reginfo; r->type != ARM_CP_SENTINEL; r++) {
4368 id_tlbtr_reginfo.access = PL1_RW;
4369 id_tlbtr_reginfo.access = PL1_RW;
4371 if (arm_feature(env, ARM_FEATURE_V8)) {
4372 define_arm_cp_regs(cpu, id_v8_midr_cp_reginfo);
4374 define_arm_cp_regs(cpu, id_pre_v8_midr_cp_reginfo);
4376 define_arm_cp_regs(cpu, id_cp_reginfo);
4377 if (!arm_feature(env, ARM_FEATURE_MPU)) {
4378 define_one_arm_cp_reg(cpu, &id_tlbtr_reginfo);
4379 } else if (arm_feature(env, ARM_FEATURE_V7)) {
4380 define_one_arm_cp_reg(cpu, &id_mpuir_reginfo);
4384 if (arm_feature(env, ARM_FEATURE_MPIDR)) {
4385 define_arm_cp_regs(cpu, mpidr_cp_reginfo);
4388 if (arm_feature(env, ARM_FEATURE_AUXCR)) {
4389 ARMCPRegInfo auxcr_reginfo[] = {
4390 { .name = "ACTLR_EL1", .state = ARM_CP_STATE_BOTH,
4391 .opc0 = 3, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 1,
4392 .access = PL1_RW, .type = ARM_CP_CONST,
4393 .resetvalue = cpu->reset_auxcr },
4394 { .name = "ACTLR_EL2", .state = ARM_CP_STATE_BOTH,
4395 .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 0, .opc2 = 1,
4396 .access = PL2_RW, .type = ARM_CP_CONST,
4398 { .name = "ACTLR_EL3", .state = ARM_CP_STATE_AA64,
4399 .opc0 = 3, .opc1 = 6, .crn = 1, .crm = 0, .opc2 = 1,
4400 .access = PL3_RW, .type = ARM_CP_CONST,
4404 define_arm_cp_regs(cpu, auxcr_reginfo);
4407 if (arm_feature(env, ARM_FEATURE_CBAR)) {
4408 if (arm_feature(env, ARM_FEATURE_AARCH64)) {
4409 /* 32 bit view is [31:18] 0...0 [43:32]. */
4410 uint32_t cbar32 = (extract64(cpu->reset_cbar, 18, 14) << 18)
4411 | extract64(cpu->reset_cbar, 32, 12);
4412 ARMCPRegInfo cbar_reginfo[] = {
4414 .type = ARM_CP_CONST,
4415 .cp = 15, .crn = 15, .crm = 0, .opc1 = 4, .opc2 = 0,
4416 .access = PL1_R, .resetvalue = cpu->reset_cbar },
4417 { .name = "CBAR_EL1", .state = ARM_CP_STATE_AA64,
4418 .type = ARM_CP_CONST,
4419 .opc0 = 3, .opc1 = 1, .crn = 15, .crm = 3, .opc2 = 0,
4420 .access = PL1_R, .resetvalue = cbar32 },
4423 /* We don't implement a r/w 64 bit CBAR currently */
4424 assert(arm_feature(env, ARM_FEATURE_CBAR_RO));
4425 define_arm_cp_regs(cpu, cbar_reginfo);
4427 ARMCPRegInfo cbar = {
4429 .cp = 15, .crn = 15, .crm = 0, .opc1 = 4, .opc2 = 0,
4430 .access = PL1_R|PL3_W, .resetvalue = cpu->reset_cbar,
4431 .fieldoffset = offsetof(CPUARMState,
4432 cp15.c15_config_base_address)
4434 if (arm_feature(env, ARM_FEATURE_CBAR_RO)) {
4435 cbar.access = PL1_R;
4436 cbar.fieldoffset = 0;
4437 cbar.type = ARM_CP_CONST;
4439 define_one_arm_cp_reg(cpu, &cbar);
4443 /* Generic registers whose values depend on the implementation */
4445 ARMCPRegInfo sctlr = {
4446 .name = "SCTLR", .state = ARM_CP_STATE_BOTH,
4447 .opc0 = 3, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 0,
4449 .bank_fieldoffsets = { offsetof(CPUARMState, cp15.sctlr_s),
4450 offsetof(CPUARMState, cp15.sctlr_ns) },
4451 .writefn = sctlr_write, .resetvalue = cpu->reset_sctlr,
4452 .raw_writefn = raw_write,
4454 if (arm_feature(env, ARM_FEATURE_XSCALE)) {
4455 /* Normally we would always end the TB on an SCTLR write, but Linux
4456 * arch/arm/mach-pxa/sleep.S expects two instructions following
4457 * an MMU enable to execute from cache. Imitate this behaviour.
4459 sctlr.type |= ARM_CP_SUPPRESS_TB_END;
4461 define_one_arm_cp_reg(cpu, &sctlr);
4465 ARMCPU *cpu_arm_init(const char *cpu_model)
4467 return ARM_CPU(cpu_generic_init(TYPE_ARM_CPU, cpu_model));
4470 void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu)
4472 CPUState *cs = CPU(cpu);
4473 CPUARMState *env = &cpu->env;
4475 if (arm_feature(env, ARM_FEATURE_AARCH64)) {
4476 gdb_register_coprocessor(cs, aarch64_fpu_gdb_get_reg,
4477 aarch64_fpu_gdb_set_reg,
4478 34, "aarch64-fpu.xml", 0);
4479 } else if (arm_feature(env, ARM_FEATURE_NEON)) {
4480 gdb_register_coprocessor(cs, vfp_gdb_get_reg, vfp_gdb_set_reg,
4481 51, "arm-neon.xml", 0);
4482 } else if (arm_feature(env, ARM_FEATURE_VFP3)) {
4483 gdb_register_coprocessor(cs, vfp_gdb_get_reg, vfp_gdb_set_reg,
4484 35, "arm-vfp3.xml", 0);
4485 } else if (arm_feature(env, ARM_FEATURE_VFP)) {
4486 gdb_register_coprocessor(cs, vfp_gdb_get_reg, vfp_gdb_set_reg,
4487 19, "arm-vfp.xml", 0);
4491 /* Sort alphabetically by type name, except for "any". */
4492 static gint arm_cpu_list_compare(gconstpointer a, gconstpointer b)
4494 ObjectClass *class_a = (ObjectClass *)a;
4495 ObjectClass *class_b = (ObjectClass *)b;
4496 const char *name_a, *name_b;
4498 name_a = object_class_get_name(class_a);
4499 name_b = object_class_get_name(class_b);
4500 if (strcmp(name_a, "any-" TYPE_ARM_CPU) == 0) {
4502 } else if (strcmp(name_b, "any-" TYPE_ARM_CPU) == 0) {
4505 return strcmp(name_a, name_b);
4509 static void arm_cpu_list_entry(gpointer data, gpointer user_data)
4511 ObjectClass *oc = data;
4512 CPUListState *s = user_data;
4513 const char *typename;
4516 typename = object_class_get_name(oc);
4517 name = g_strndup(typename, strlen(typename) - strlen("-" TYPE_ARM_CPU));
4518 (*s->cpu_fprintf)(s->file, " %s\n",
4523 void arm_cpu_list(FILE *f, fprintf_function cpu_fprintf)
4527 .cpu_fprintf = cpu_fprintf,
4531 list = object_class_get_list(TYPE_ARM_CPU, false);
4532 list = g_slist_sort(list, arm_cpu_list_compare);
4533 (*cpu_fprintf)(f, "Available CPUs:\n");
4534 g_slist_foreach(list, arm_cpu_list_entry, &s);
4537 /* The 'host' CPU type is dynamically registered only if KVM is
4538 * enabled, so we have to special-case it here:
4540 (*cpu_fprintf)(f, " host (only available in KVM mode)\n");
4544 static void arm_cpu_add_definition(gpointer data, gpointer user_data)
4546 ObjectClass *oc = data;
4547 CpuDefinitionInfoList **cpu_list = user_data;
4548 CpuDefinitionInfoList *entry;
4549 CpuDefinitionInfo *info;
4550 const char *typename;
4552 typename = object_class_get_name(oc);
4553 info = g_malloc0(sizeof(*info));
4554 info->name = g_strndup(typename,
4555 strlen(typename) - strlen("-" TYPE_ARM_CPU));
4557 entry = g_malloc0(sizeof(*entry));
4558 entry->value = info;
4559 entry->next = *cpu_list;
4563 CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
4565 CpuDefinitionInfoList *cpu_list = NULL;
4568 list = object_class_get_list(TYPE_ARM_CPU, false);
4569 g_slist_foreach(list, arm_cpu_add_definition, &cpu_list);
4575 static void add_cpreg_to_hashtable(ARMCPU *cpu, const ARMCPRegInfo *r,
4576 void *opaque, int state, int secstate,
4577 int crm, int opc1, int opc2)
4579 /* Private utility function for define_one_arm_cp_reg_with_opaque():
4580 * add a single reginfo struct to the hash table.
4582 uint32_t *key = g_new(uint32_t, 1);
4583 ARMCPRegInfo *r2 = g_memdup(r, sizeof(ARMCPRegInfo));
4584 int is64 = (r->type & ARM_CP_64BIT) ? 1 : 0;
4585 int ns = (secstate & ARM_CP_SECSTATE_NS) ? 1 : 0;
4587 /* Reset the secure state to the specific incoming state. This is
4588 * necessary as the register may have been defined with both states.
4590 r2->secure = secstate;
4592 if (r->bank_fieldoffsets[0] && r->bank_fieldoffsets[1]) {
4593 /* Register is banked (using both entries in array).
4594 * Overwriting fieldoffset as the array is only used to define
4595 * banked registers but later only fieldoffset is used.
4597 r2->fieldoffset = r->bank_fieldoffsets[ns];
4600 if (state == ARM_CP_STATE_AA32) {
4601 if (r->bank_fieldoffsets[0] && r->bank_fieldoffsets[1]) {
4602 /* If the register is banked then we don't need to migrate or
4603 * reset the 32-bit instance in certain cases:
4605 * 1) If the register has both 32-bit and 64-bit instances then we
4606 * can count on the 64-bit instance taking care of the
4608 * 2) If ARMv8 is enabled then we can count on a 64-bit version
4609 * taking care of the secure bank. This requires that separate
4610 * 32 and 64-bit definitions are provided.
4612 if ((r->state == ARM_CP_STATE_BOTH && ns) ||
4613 (arm_feature(&cpu->env, ARM_FEATURE_V8) && !ns)) {
4614 r2->type |= ARM_CP_ALIAS;
4616 } else if ((secstate != r->secure) && !ns) {
4617 /* The register is not banked so we only want to allow migration of
4618 * the non-secure instance.
4620 r2->type |= ARM_CP_ALIAS;
4623 if (r->state == ARM_CP_STATE_BOTH) {
4624 /* We assume it is a cp15 register if the .cp field is left unset.
4630 #ifdef HOST_WORDS_BIGENDIAN
4631 if (r2->fieldoffset) {
4632 r2->fieldoffset += sizeof(uint32_t);
4637 if (state == ARM_CP_STATE_AA64) {
4638 /* To allow abbreviation of ARMCPRegInfo
4639 * definitions, we treat cp == 0 as equivalent to
4640 * the value for "standard guest-visible sysreg".
4641 * STATE_BOTH definitions are also always "standard
4642 * sysreg" in their AArch64 view (the .cp value may
4643 * be non-zero for the benefit of the AArch32 view).
4645 if (r->cp == 0 || r->state == ARM_CP_STATE_BOTH) {
4646 r2->cp = CP_REG_ARM64_SYSREG_CP;
4648 *key = ENCODE_AA64_CP_REG(r2->cp, r2->crn, crm,
4649 r2->opc0, opc1, opc2);
4651 *key = ENCODE_CP_REG(r2->cp, is64, ns, r2->crn, crm, opc1, opc2);
4654 r2->opaque = opaque;
4656 /* reginfo passed to helpers is correct for the actual access,
4657 * and is never ARM_CP_STATE_BOTH:
4660 /* Make sure reginfo passed to helpers for wildcarded regs
4661 * has the correct crm/opc1/opc2 for this reg, not CP_ANY:
4666 /* By convention, for wildcarded registers only the first
4667 * entry is used for migration; the others are marked as
4668 * ALIAS so we don't try to transfer the register
4669 * multiple times. Special registers (ie NOP/WFI) are
4670 * never migratable and not even raw-accessible.
4672 if ((r->type & ARM_CP_SPECIAL)) {
4673 r2->type |= ARM_CP_NO_RAW;
4675 if (((r->crm == CP_ANY) && crm != 0) ||
4676 ((r->opc1 == CP_ANY) && opc1 != 0) ||
4677 ((r->opc2 == CP_ANY) && opc2 != 0)) {
4678 r2->type |= ARM_CP_ALIAS;
4681 /* Check that raw accesses are either forbidden or handled. Note that
4682 * we can't assert this earlier because the setup of fieldoffset for
4683 * banked registers has to be done first.
4685 if (!(r2->type & ARM_CP_NO_RAW)) {
4686 assert(!raw_accessors_invalid(r2));
4689 /* Overriding of an existing definition must be explicitly
4692 if (!(r->type & ARM_CP_OVERRIDE)) {
4693 ARMCPRegInfo *oldreg;
4694 oldreg = g_hash_table_lookup(cpu->cp_regs, key);
4695 if (oldreg && !(oldreg->type & ARM_CP_OVERRIDE)) {
4696 fprintf(stderr, "Register redefined: cp=%d %d bit "
4697 "crn=%d crm=%d opc1=%d opc2=%d, "
4698 "was %s, now %s\n", r2->cp, 32 + 32 * is64,
4699 r2->crn, r2->crm, r2->opc1, r2->opc2,
4700 oldreg->name, r2->name);
4701 g_assert_not_reached();
4704 g_hash_table_insert(cpu->cp_regs, key, r2);
4708 void define_one_arm_cp_reg_with_opaque(ARMCPU *cpu,
4709 const ARMCPRegInfo *r, void *opaque)
4711 /* Define implementations of coprocessor registers.
4712 * We store these in a hashtable because typically
4713 * there are less than 150 registers in a space which
4714 * is 16*16*16*8*8 = 262144 in size.
4715 * Wildcarding is supported for the crm, opc1 and opc2 fields.
4716 * If a register is defined twice then the second definition is
4717 * used, so this can be used to define some generic registers and
4718 * then override them with implementation specific variations.
4719 * At least one of the original and the second definition should
4720 * include ARM_CP_OVERRIDE in its type bits -- this is just a guard
4721 * against accidental use.
4723 * The state field defines whether the register is to be
4724 * visible in the AArch32 or AArch64 execution state. If the
4725 * state is set to ARM_CP_STATE_BOTH then we synthesise a
4726 * reginfo structure for the AArch32 view, which sees the lower
4727 * 32 bits of the 64 bit register.
4729 * Only registers visible in AArch64 may set r->opc0; opc0 cannot
4730 * be wildcarded. AArch64 registers are always considered to be 64
4731 * bits; the ARM_CP_64BIT* flag applies only to the AArch32 view of
4732 * the register, if any.
4734 int crm, opc1, opc2, state;
4735 int crmmin = (r->crm == CP_ANY) ? 0 : r->crm;
4736 int crmmax = (r->crm == CP_ANY) ? 15 : r->crm;
4737 int opc1min = (r->opc1 == CP_ANY) ? 0 : r->opc1;
4738 int opc1max = (r->opc1 == CP_ANY) ? 7 : r->opc1;
4739 int opc2min = (r->opc2 == CP_ANY) ? 0 : r->opc2;
4740 int opc2max = (r->opc2 == CP_ANY) ? 7 : r->opc2;
4741 /* 64 bit registers have only CRm and Opc1 fields */
4742 assert(!((r->type & ARM_CP_64BIT) && (r->opc2 || r->crn)));
4743 /* op0 only exists in the AArch64 encodings */
4744 assert((r->state != ARM_CP_STATE_AA32) || (r->opc0 == 0));
4745 /* AArch64 regs are all 64 bit so ARM_CP_64BIT is meaningless */
4746 assert((r->state != ARM_CP_STATE_AA64) || !(r->type & ARM_CP_64BIT));
4747 /* The AArch64 pseudocode CheckSystemAccess() specifies that op1
4748 * encodes a minimum access level for the register. We roll this
4749 * runtime check into our general permission check code, so check
4750 * here that the reginfo's specified permissions are strict enough
4751 * to encompass the generic architectural permission check.
4753 if (r->state != ARM_CP_STATE_AA32) {
4756 case 0: case 1: case 2:
4769 /* unallocated encoding, so not possible */
4777 /* min_EL EL1, secure mode only (we don't check the latter) */
4781 /* broken reginfo with out-of-range opc1 */
4785 /* assert our permissions are not too lax (stricter is fine) */
4786 assert((r->access & ~mask) == 0);
4789 /* Check that the register definition has enough info to handle
4790 * reads and writes if they are permitted.
4792 if (!(r->type & (ARM_CP_SPECIAL|ARM_CP_CONST))) {
4793 if (r->access & PL3_R) {
4794 assert((r->fieldoffset ||
4795 (r->bank_fieldoffsets[0] && r->bank_fieldoffsets[1])) ||
4798 if (r->access & PL3_W) {
4799 assert((r->fieldoffset ||
4800 (r->bank_fieldoffsets[0] && r->bank_fieldoffsets[1])) ||
4804 /* Bad type field probably means missing sentinel at end of reg list */
4805 assert(cptype_valid(r->type));
4806 for (crm = crmmin; crm <= crmmax; crm++) {
4807 for (opc1 = opc1min; opc1 <= opc1max; opc1++) {
4808 for (opc2 = opc2min; opc2 <= opc2max; opc2++) {
4809 for (state = ARM_CP_STATE_AA32;
4810 state <= ARM_CP_STATE_AA64; state++) {
4811 if (r->state != state && r->state != ARM_CP_STATE_BOTH) {
4814 if (state == ARM_CP_STATE_AA32) {
4815 /* Under AArch32 CP registers can be common
4816 * (same for secure and non-secure world) or banked.
4818 switch (r->secure) {
4819 case ARM_CP_SECSTATE_S:
4820 case ARM_CP_SECSTATE_NS:
4821 add_cpreg_to_hashtable(cpu, r, opaque, state,
4822 r->secure, crm, opc1, opc2);
4825 add_cpreg_to_hashtable(cpu, r, opaque, state,
4828 add_cpreg_to_hashtable(cpu, r, opaque, state,
4834 /* AArch64 registers get mapped to non-secure instance
4836 add_cpreg_to_hashtable(cpu, r, opaque, state,
4846 void define_arm_cp_regs_with_opaque(ARMCPU *cpu,
4847 const ARMCPRegInfo *regs, void *opaque)
4849 /* Define a whole list of registers */
4850 const ARMCPRegInfo *r;
4851 for (r = regs; r->type != ARM_CP_SENTINEL; r++) {
4852 define_one_arm_cp_reg_with_opaque(cpu, r, opaque);
4856 const ARMCPRegInfo *get_arm_cp_reginfo(GHashTable *cpregs, uint32_t encoded_cp)
4858 return g_hash_table_lookup(cpregs, &encoded_cp);
4861 void arm_cp_write_ignore(CPUARMState *env, const ARMCPRegInfo *ri,
4864 /* Helper coprocessor write function for write-ignore registers */
4867 uint64_t arm_cp_read_zero(CPUARMState *env, const ARMCPRegInfo *ri)
4869 /* Helper coprocessor write function for read-as-zero registers */
4873 void arm_cp_reset_ignore(CPUARMState *env, const ARMCPRegInfo *opaque)
4875 /* Helper coprocessor reset function for do-nothing-on-reset registers */
4878 static int bad_mode_switch(CPUARMState *env, int mode)
4880 /* Return true if it is not valid for us to switch to
4881 * this CPU mode (ie all the UNPREDICTABLE cases in
4882 * the ARM ARM CPSRWriteByInstr pseudocode).
4885 case ARM_CPU_MODE_USR:
4886 case ARM_CPU_MODE_SYS:
4887 case ARM_CPU_MODE_SVC:
4888 case ARM_CPU_MODE_ABT:
4889 case ARM_CPU_MODE_UND:
4890 case ARM_CPU_MODE_IRQ:
4891 case ARM_CPU_MODE_FIQ:
4893 case ARM_CPU_MODE_MON:
4894 return !arm_is_secure(env);
4900 uint32_t cpsr_read(CPUARMState *env)
4903 ZF = (env->ZF == 0);
4904 return env->uncached_cpsr | (env->NF & 0x80000000) | (ZF << 30) |
4905 (env->CF << 29) | ((env->VF & 0x80000000) >> 3) | (env->QF << 27)
4906 | (env->thumb << 5) | ((env->condexec_bits & 3) << 25)
4907 | ((env->condexec_bits & 0xfc) << 8)
4908 | (env->GE << 16) | (env->daif & CPSR_AIF);
4911 void cpsr_write(CPUARMState *env, uint32_t val, uint32_t mask)
4913 uint32_t changed_daif;
4915 if (mask & CPSR_NZCV) {
4916 env->ZF = (~val) & CPSR_Z;
4918 env->CF = (val >> 29) & 1;
4919 env->VF = (val << 3) & 0x80000000;
4922 env->QF = ((val & CPSR_Q) != 0);
4924 env->thumb = ((val & CPSR_T) != 0);
4925 if (mask & CPSR_IT_0_1) {
4926 env->condexec_bits &= ~3;
4927 env->condexec_bits |= (val >> 25) & 3;
4929 if (mask & CPSR_IT_2_7) {
4930 env->condexec_bits &= 3;
4931 env->condexec_bits |= (val >> 8) & 0xfc;
4933 if (mask & CPSR_GE) {
4934 env->GE = (val >> 16) & 0xf;
4937 /* In a V7 implementation that includes the security extensions but does
4938 * not include Virtualization Extensions the SCR.FW and SCR.AW bits control
4939 * whether non-secure software is allowed to change the CPSR_F and CPSR_A
4940 * bits respectively.
4942 * In a V8 implementation, it is permitted for privileged software to
4943 * change the CPSR A/F bits regardless of the SCR.AW/FW bits.
4945 if (!arm_feature(env, ARM_FEATURE_V8) &&
4946 arm_feature(env, ARM_FEATURE_EL3) &&
4947 !arm_feature(env, ARM_FEATURE_EL2) &&
4948 !arm_is_secure(env)) {
4950 changed_daif = (env->daif ^ val) & mask;
4952 if (changed_daif & CPSR_A) {
4953 /* Check to see if we are allowed to change the masking of async
4954 * abort exceptions from a non-secure state.
4956 if (!(env->cp15.scr_el3 & SCR_AW)) {
4957 qemu_log_mask(LOG_GUEST_ERROR,
4958 "Ignoring attempt to switch CPSR_A flag from "
4959 "non-secure world with SCR.AW bit clear\n");
4964 if (changed_daif & CPSR_F) {
4965 /* Check to see if we are allowed to change the masking of FIQ
4966 * exceptions from a non-secure state.
4968 if (!(env->cp15.scr_el3 & SCR_FW)) {
4969 qemu_log_mask(LOG_GUEST_ERROR,
4970 "Ignoring attempt to switch CPSR_F flag from "
4971 "non-secure world with SCR.FW bit clear\n");
4975 /* Check whether non-maskable FIQ (NMFI) support is enabled.
4976 * If this bit is set software is not allowed to mask
4977 * FIQs, but is allowed to set CPSR_F to 0.
4979 if ((A32_BANKED_CURRENT_REG_GET(env, sctlr) & SCTLR_NMFI) &&
4981 qemu_log_mask(LOG_GUEST_ERROR,
4982 "Ignoring attempt to enable CPSR_F flag "
4983 "(non-maskable FIQ [NMFI] support enabled)\n");
4989 env->daif &= ~(CPSR_AIF & mask);
4990 env->daif |= val & CPSR_AIF & mask;
4992 if ((env->uncached_cpsr ^ val) & mask & CPSR_M) {
4993 if (bad_mode_switch(env, val & CPSR_M)) {
4994 /* Attempt to switch to an invalid mode: this is UNPREDICTABLE.
4995 * We choose to ignore the attempt and leave the CPSR M field
5000 switch_mode(env, val & CPSR_M);
5003 mask &= ~CACHED_CPSR_BITS;
5004 env->uncached_cpsr = (env->uncached_cpsr & ~mask) | (val & mask);
5007 /* Sign/zero extend */
5008 uint32_t HELPER(sxtb16)(uint32_t x)
5011 res = (uint16_t)(int8_t)x;
5012 res |= (uint32_t)(int8_t)(x >> 16) << 16;
5016 uint32_t HELPER(uxtb16)(uint32_t x)
5019 res = (uint16_t)(uint8_t)x;
5020 res |= (uint32_t)(uint8_t)(x >> 16) << 16;
5024 uint32_t HELPER(clz)(uint32_t x)
5029 int32_t HELPER(sdiv)(int32_t num, int32_t den)
5033 if (num == INT_MIN && den == -1)
5038 uint32_t HELPER(udiv)(uint32_t num, uint32_t den)
5045 uint32_t HELPER(rbit)(uint32_t x)
5047 x = ((x & 0xff000000) >> 24)
5048 | ((x & 0x00ff0000) >> 8)
5049 | ((x & 0x0000ff00) << 8)
5050 | ((x & 0x000000ff) << 24);
5051 x = ((x & 0xf0f0f0f0) >> 4)
5052 | ((x & 0x0f0f0f0f) << 4);
5053 x = ((x & 0x88888888) >> 3)
5054 | ((x & 0x44444444) >> 1)
5055 | ((x & 0x22222222) << 1)
5056 | ((x & 0x11111111) << 3);
5060 #if defined(CONFIG_USER_ONLY)
5062 /* These should probably raise undefined insn exceptions. */
5063 void HELPER(v7m_msr)(CPUARMState *env, uint32_t reg, uint32_t val)
5065 ARMCPU *cpu = arm_env_get_cpu(env);
5067 cpu_abort(CPU(cpu), "v7m_msr %d\n", reg);
5070 uint32_t HELPER(v7m_mrs)(CPUARMState *env, uint32_t reg)
5072 ARMCPU *cpu = arm_env_get_cpu(env);
5074 cpu_abort(CPU(cpu), "v7m_mrs %d\n", reg);
5078 void switch_mode(CPUARMState *env, int mode)
5080 ARMCPU *cpu = arm_env_get_cpu(env);
5082 if (mode != ARM_CPU_MODE_USR) {
5083 cpu_abort(CPU(cpu), "Tried to switch out of user mode\n");
5087 void HELPER(set_r13_banked)(CPUARMState *env, uint32_t mode, uint32_t val)
5089 ARMCPU *cpu = arm_env_get_cpu(env);
5091 cpu_abort(CPU(cpu), "banked r13 write\n");
5094 uint32_t HELPER(get_r13_banked)(CPUARMState *env, uint32_t mode)
5096 ARMCPU *cpu = arm_env_get_cpu(env);
5098 cpu_abort(CPU(cpu), "banked r13 read\n");
5102 uint32_t arm_phys_excp_target_el(CPUState *cs, uint32_t excp_idx,
5103 uint32_t cur_el, bool secure)
5108 void aarch64_sync_64_to_32(CPUARMState *env)
5110 g_assert_not_reached();
5115 /* Map CPU modes onto saved register banks. */
5116 int bank_number(int mode)
5119 case ARM_CPU_MODE_USR:
5120 case ARM_CPU_MODE_SYS:
5122 case ARM_CPU_MODE_SVC:
5124 case ARM_CPU_MODE_ABT:
5126 case ARM_CPU_MODE_UND:
5128 case ARM_CPU_MODE_IRQ:
5130 case ARM_CPU_MODE_FIQ:
5132 case ARM_CPU_MODE_HYP:
5134 case ARM_CPU_MODE_MON:
5137 g_assert_not_reached();
5140 void switch_mode(CPUARMState *env, int mode)
5145 old_mode = env->uncached_cpsr & CPSR_M;
5146 if (mode == old_mode)
5149 if (old_mode == ARM_CPU_MODE_FIQ) {
5150 memcpy (env->fiq_regs, env->regs + 8, 5 * sizeof(uint32_t));
5151 memcpy (env->regs + 8, env->usr_regs, 5 * sizeof(uint32_t));
5152 } else if (mode == ARM_CPU_MODE_FIQ) {
5153 memcpy (env->usr_regs, env->regs + 8, 5 * sizeof(uint32_t));
5154 memcpy (env->regs + 8, env->fiq_regs, 5 * sizeof(uint32_t));
5157 i = bank_number(old_mode);
5158 env->banked_r13[i] = env->regs[13];
5159 env->banked_r14[i] = env->regs[14];
5160 env->banked_spsr[i] = env->spsr;
5162 i = bank_number(mode);
5163 env->regs[13] = env->banked_r13[i];
5164 env->regs[14] = env->banked_r14[i];
5165 env->spsr = env->banked_spsr[i];
5168 /* Physical Interrupt Target EL Lookup Table
5170 * [ From ARM ARM section G1.13.4 (Table G1-15) ]
5172 * The below multi-dimensional table is used for looking up the target
5173 * exception level given numerous condition criteria. Specifically, the
5174 * target EL is based on SCR and HCR routing controls as well as the
5175 * currently executing EL and secure state.
5178 * target_el_table[2][2][2][2][2][4]
5179 * | | | | | +--- Current EL
5180 * | | | | +------ Non-secure(0)/Secure(1)
5181 * | | | +--------- HCR mask override
5182 * | | +------------ SCR exec state control
5183 * | +--------------- SCR mask override
5184 * +------------------ 32-bit(0)/64-bit(1) EL3
5186 * The table values are as such:
5190 * The ARM ARM target EL table includes entries indicating that an "exception
5191 * is not taken". The two cases where this is applicable are:
5192 * 1) An exception is taken from EL3 but the SCR does not have the exception
5194 * 2) An exception is taken from EL2 but the HCR does not have the exception
5196 * In these two cases, the below table contain a target of EL1. This value is
5197 * returned as it is expected that the consumer of the table data will check
5198 * for "target EL >= current EL" to ensure the exception is not taken.
5202 * BIT IRQ IMO Non-secure Secure
5203 * EL3 FIQ RW FMO EL0 EL1 EL2 EL3 EL0 EL1 EL2 EL3
5205 const int8_t target_el_table[2][2][2][2][2][4] = {
5206 {{{{/* 0 0 0 0 */{ 1, 1, 2, -1 },{ 3, -1, -1, 3 },},
5207 {/* 0 0 0 1 */{ 2, 2, 2, -1 },{ 3, -1, -1, 3 },},},
5208 {{/* 0 0 1 0 */{ 1, 1, 2, -1 },{ 3, -1, -1, 3 },},
5209 {/* 0 0 1 1 */{ 2, 2, 2, -1 },{ 3, -1, -1, 3 },},},},
5210 {{{/* 0 1 0 0 */{ 3, 3, 3, -1 },{ 3, -1, -1, 3 },},
5211 {/* 0 1 0 1 */{ 3, 3, 3, -1 },{ 3, -1, -1, 3 },},},
5212 {{/* 0 1 1 0 */{ 3, 3, 3, -1 },{ 3, -1, -1, 3 },},
5213 {/* 0 1 1 1 */{ 3, 3, 3, -1 },{ 3, -1, -1, 3 },},},},},
5214 {{{{/* 1 0 0 0 */{ 1, 1, 2, -1 },{ 1, 1, -1, 1 },},
5215 {/* 1 0 0 1 */{ 2, 2, 2, -1 },{ 1, 1, -1, 1 },},},
5216 {{/* 1 0 1 0 */{ 1, 1, 1, -1 },{ 1, 1, -1, 1 },},
5217 {/* 1 0 1 1 */{ 2, 2, 2, -1 },{ 1, 1, -1, 1 },},},},
5218 {{{/* 1 1 0 0 */{ 3, 3, 3, -1 },{ 3, 3, -1, 3 },},
5219 {/* 1 1 0 1 */{ 3, 3, 3, -1 },{ 3, 3, -1, 3 },},},
5220 {{/* 1 1 1 0 */{ 3, 3, 3, -1 },{ 3, 3, -1, 3 },},
5221 {/* 1 1 1 1 */{ 3, 3, 3, -1 },{ 3, 3, -1, 3 },},},},},
5225 * Determine the target EL for physical exceptions
5227 uint32_t arm_phys_excp_target_el(CPUState *cs, uint32_t excp_idx,
5228 uint32_t cur_el, bool secure)
5230 CPUARMState *env = cs->env_ptr;
5231 int rw = ((env->cp15.scr_el3 & SCR_RW) == SCR_RW);
5235 int is64 = arm_el_is_aa64(env, 3);
5239 scr = ((env->cp15.scr_el3 & SCR_IRQ) == SCR_IRQ);
5240 hcr = ((env->cp15.hcr_el2 & HCR_IMO) == HCR_IMO);
5243 scr = ((env->cp15.scr_el3 & SCR_FIQ) == SCR_FIQ);
5244 hcr = ((env->cp15.hcr_el2 & HCR_FMO) == HCR_FMO);
5247 scr = ((env->cp15.scr_el3 & SCR_EA) == SCR_EA);
5248 hcr = ((env->cp15.hcr_el2 & HCR_AMO) == HCR_AMO);
5252 /* If HCR.TGE is set then HCR is treated as being 1 */
5253 hcr |= ((env->cp15.hcr_el2 & HCR_TGE) == HCR_TGE);
5255 /* Perform a table-lookup for the target EL given the current state */
5256 target_el = target_el_table[is64][scr][rw][hcr][secure][cur_el];
5258 assert(target_el > 0);
5263 static void v7m_push(CPUARMState *env, uint32_t val)
5265 CPUState *cs = CPU(arm_env_get_cpu(env));
5268 stl_phys(cs->as, env->regs[13], val);
5271 static uint32_t v7m_pop(CPUARMState *env)
5273 CPUState *cs = CPU(arm_env_get_cpu(env));
5276 val = ldl_phys(cs->as, env->regs[13]);
5281 /* Switch to V7M main or process stack pointer. */
5282 static void switch_v7m_sp(CPUARMState *env, int process)
5285 if (env->v7m.current_sp != process) {
5286 tmp = env->v7m.other_sp;
5287 env->v7m.other_sp = env->regs[13];
5288 env->regs[13] = tmp;
5289 env->v7m.current_sp = process;
5293 static void do_v7m_exception_exit(CPUARMState *env)
5298 type = env->regs[15];
5299 if (env->v7m.exception != 0)
5300 armv7m_nvic_complete_irq(env->nvic, env->v7m.exception);
5302 /* Switch to the target stack. */
5303 switch_v7m_sp(env, (type & 4) != 0);
5304 /* Pop registers. */
5305 env->regs[0] = v7m_pop(env);
5306 env->regs[1] = v7m_pop(env);
5307 env->regs[2] = v7m_pop(env);
5308 env->regs[3] = v7m_pop(env);
5309 env->regs[12] = v7m_pop(env);
5310 env->regs[14] = v7m_pop(env);
5311 env->regs[15] = v7m_pop(env);
5312 if (env->regs[15] & 1) {
5313 qemu_log_mask(LOG_GUEST_ERROR,
5314 "M profile return from interrupt with misaligned "
5315 "PC is UNPREDICTABLE\n");
5316 /* Actual hardware seems to ignore the lsbit, and there are several
5317 * RTOSes out there which incorrectly assume the r15 in the stack
5318 * frame should be a Thumb-style "lsbit indicates ARM/Thumb" value.
5320 env->regs[15] &= ~1U;
5322 xpsr = v7m_pop(env);
5323 xpsr_write(env, xpsr, 0xfffffdff);
5324 /* Undo stack alignment. */
5327 /* ??? The exception return type specifies Thread/Handler mode. However
5328 this is also implied by the xPSR value. Not sure what to do
5329 if there is a mismatch. */
5330 /* ??? Likewise for mismatches between the CONTROL register and the stack
5334 void arm_v7m_cpu_do_interrupt(CPUState *cs)
5336 ARMCPU *cpu = ARM_CPU(cs);
5337 CPUARMState *env = &cpu->env;
5338 uint32_t xpsr = xpsr_read(env);
5342 arm_log_exception(cs->exception_index);
5345 if (env->v7m.current_sp)
5347 if (env->v7m.exception == 0)
5350 /* For exceptions we just mark as pending on the NVIC, and let that
5352 /* TODO: Need to escalate if the current priority is higher than the
5353 one we're raising. */
5354 switch (cs->exception_index) {
5356 armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE);
5359 /* The PC already points to the next instruction. */
5360 armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_SVC);
5362 case EXCP_PREFETCH_ABORT:
5363 case EXCP_DATA_ABORT:
5364 /* TODO: if we implemented the MPU registers, this is where we
5365 * should set the MMFAR, etc from exception.fsr and exception.vaddress.
5367 armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_MEM);
5370 if (semihosting_enabled()) {
5372 nr = arm_lduw_code(env, env->regs[15], env->bswap_code) & 0xff;
5375 qemu_log_mask(CPU_LOG_INT,
5376 "...handling as semihosting call 0x%x\n",
5378 env->regs[0] = do_arm_semihosting(env);
5382 armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_DEBUG);
5385 env->v7m.exception = armv7m_nvic_acknowledge_irq(env->nvic);
5387 case EXCP_EXCEPTION_EXIT:
5388 do_v7m_exception_exit(env);
5391 cpu_abort(cs, "Unhandled exception 0x%x\n", cs->exception_index);
5392 return; /* Never happens. Keep compiler happy. */
5395 /* Align stack pointer. */
5396 /* ??? Should only do this if Configuration Control Register
5397 STACKALIGN bit is set. */
5398 if (env->regs[13] & 4) {
5402 /* Switch to the handler mode. */
5403 v7m_push(env, xpsr);
5404 v7m_push(env, env->regs[15]);
5405 v7m_push(env, env->regs[14]);
5406 v7m_push(env, env->regs[12]);
5407 v7m_push(env, env->regs[3]);
5408 v7m_push(env, env->regs[2]);
5409 v7m_push(env, env->regs[1]);
5410 v7m_push(env, env->regs[0]);
5411 switch_v7m_sp(env, 0);
5413 env->condexec_bits = 0;
5415 addr = ldl_phys(cs->as, env->v7m.vecbase + env->v7m.exception * 4);
5416 env->regs[15] = addr & 0xfffffffe;
5417 env->thumb = addr & 1;
5420 /* Function used to synchronize QEMU's AArch64 register set with AArch32
5421 * register set. This is necessary when switching between AArch32 and AArch64
5424 void aarch64_sync_32_to_64(CPUARMState *env)
5427 uint32_t mode = env->uncached_cpsr & CPSR_M;
5429 /* We can blanket copy R[0:7] to X[0:7] */
5430 for (i = 0; i < 8; i++) {
5431 env->xregs[i] = env->regs[i];
5434 /* Unless we are in FIQ mode, x8-x12 come from the user registers r8-r12.
5435 * Otherwise, they come from the banked user regs.
5437 if (mode == ARM_CPU_MODE_FIQ) {
5438 for (i = 8; i < 13; i++) {
5439 env->xregs[i] = env->usr_regs[i - 8];
5442 for (i = 8; i < 13; i++) {
5443 env->xregs[i] = env->regs[i];
5447 /* Registers x13-x23 are the various mode SP and FP registers. Registers
5448 * r13 and r14 are only copied if we are in that mode, otherwise we copy
5449 * from the mode banked register.
5451 if (mode == ARM_CPU_MODE_USR || mode == ARM_CPU_MODE_SYS) {
5452 env->xregs[13] = env->regs[13];
5453 env->xregs[14] = env->regs[14];
5455 env->xregs[13] = env->banked_r13[bank_number(ARM_CPU_MODE_USR)];
5456 /* HYP is an exception in that it is copied from r14 */
5457 if (mode == ARM_CPU_MODE_HYP) {
5458 env->xregs[14] = env->regs[14];
5460 env->xregs[14] = env->banked_r14[bank_number(ARM_CPU_MODE_USR)];
5464 if (mode == ARM_CPU_MODE_HYP) {
5465 env->xregs[15] = env->regs[13];
5467 env->xregs[15] = env->banked_r13[bank_number(ARM_CPU_MODE_HYP)];
5470 if (mode == ARM_CPU_MODE_IRQ) {
5471 env->xregs[16] = env->regs[14];
5472 env->xregs[17] = env->regs[13];
5474 env->xregs[16] = env->banked_r14[bank_number(ARM_CPU_MODE_IRQ)];
5475 env->xregs[17] = env->banked_r13[bank_number(ARM_CPU_MODE_IRQ)];
5478 if (mode == ARM_CPU_MODE_SVC) {
5479 env->xregs[18] = env->regs[14];
5480 env->xregs[19] = env->regs[13];
5482 env->xregs[18] = env->banked_r14[bank_number(ARM_CPU_MODE_SVC)];
5483 env->xregs[19] = env->banked_r13[bank_number(ARM_CPU_MODE_SVC)];
5486 if (mode == ARM_CPU_MODE_ABT) {
5487 env->xregs[20] = env->regs[14];
5488 env->xregs[21] = env->regs[13];
5490 env->xregs[20] = env->banked_r14[bank_number(ARM_CPU_MODE_ABT)];
5491 env->xregs[21] = env->banked_r13[bank_number(ARM_CPU_MODE_ABT)];
5494 if (mode == ARM_CPU_MODE_UND) {
5495 env->xregs[22] = env->regs[14];
5496 env->xregs[23] = env->regs[13];
5498 env->xregs[22] = env->banked_r14[bank_number(ARM_CPU_MODE_UND)];
5499 env->xregs[23] = env->banked_r13[bank_number(ARM_CPU_MODE_UND)];
5502 /* Registers x24-x30 are mapped to r8-r14 in FIQ mode. If we are in FIQ
5503 * mode, then we can copy from r8-r14. Otherwise, we copy from the
5504 * FIQ bank for r8-r14.
5506 if (mode == ARM_CPU_MODE_FIQ) {
5507 for (i = 24; i < 31; i++) {
5508 env->xregs[i] = env->regs[i - 16]; /* X[24:30] <- R[8:14] */
5511 for (i = 24; i < 29; i++) {
5512 env->xregs[i] = env->fiq_regs[i - 24];
5514 env->xregs[29] = env->banked_r13[bank_number(ARM_CPU_MODE_FIQ)];
5515 env->xregs[30] = env->banked_r14[bank_number(ARM_CPU_MODE_FIQ)];
5518 env->pc = env->regs[15];
5521 /* Function used to synchronize QEMU's AArch32 register set with AArch64
5522 * register set. This is necessary when switching between AArch32 and AArch64
5525 void aarch64_sync_64_to_32(CPUARMState *env)
5528 uint32_t mode = env->uncached_cpsr & CPSR_M;
5530 /* We can blanket copy X[0:7] to R[0:7] */
5531 for (i = 0; i < 8; i++) {
5532 env->regs[i] = env->xregs[i];
5535 /* Unless we are in FIQ mode, r8-r12 come from the user registers x8-x12.
5536 * Otherwise, we copy x8-x12 into the banked user regs.
5538 if (mode == ARM_CPU_MODE_FIQ) {
5539 for (i = 8; i < 13; i++) {
5540 env->usr_regs[i - 8] = env->xregs[i];
5543 for (i = 8; i < 13; i++) {
5544 env->regs[i] = env->xregs[i];
5548 /* Registers r13 & r14 depend on the current mode.
5549 * If we are in a given mode, we copy the corresponding x registers to r13
5550 * and r14. Otherwise, we copy the x register to the banked r13 and r14
5553 if (mode == ARM_CPU_MODE_USR || mode == ARM_CPU_MODE_SYS) {
5554 env->regs[13] = env->xregs[13];
5555 env->regs[14] = env->xregs[14];
5557 env->banked_r13[bank_number(ARM_CPU_MODE_USR)] = env->xregs[13];
5559 /* HYP is an exception in that it does not have its own banked r14 but
5560 * shares the USR r14
5562 if (mode == ARM_CPU_MODE_HYP) {
5563 env->regs[14] = env->xregs[14];
5565 env->banked_r14[bank_number(ARM_CPU_MODE_USR)] = env->xregs[14];
5569 if (mode == ARM_CPU_MODE_HYP) {
5570 env->regs[13] = env->xregs[15];
5572 env->banked_r13[bank_number(ARM_CPU_MODE_HYP)] = env->xregs[15];
5575 if (mode == ARM_CPU_MODE_IRQ) {
5576 env->regs[14] = env->xregs[16];
5577 env->regs[13] = env->xregs[17];
5579 env->banked_r14[bank_number(ARM_CPU_MODE_IRQ)] = env->xregs[16];
5580 env->banked_r13[bank_number(ARM_CPU_MODE_IRQ)] = env->xregs[17];
5583 if (mode == ARM_CPU_MODE_SVC) {
5584 env->regs[14] = env->xregs[18];
5585 env->regs[13] = env->xregs[19];
5587 env->banked_r14[bank_number(ARM_CPU_MODE_SVC)] = env->xregs[18];
5588 env->banked_r13[bank_number(ARM_CPU_MODE_SVC)] = env->xregs[19];
5591 if (mode == ARM_CPU_MODE_ABT) {
5592 env->regs[14] = env->xregs[20];
5593 env->regs[13] = env->xregs[21];
5595 env->banked_r14[bank_number(ARM_CPU_MODE_ABT)] = env->xregs[20];
5596 env->banked_r13[bank_number(ARM_CPU_MODE_ABT)] = env->xregs[21];
5599 if (mode == ARM_CPU_MODE_UND) {
5600 env->regs[14] = env->xregs[22];
5601 env->regs[13] = env->xregs[23];
5603 env->banked_r14[bank_number(ARM_CPU_MODE_UND)] = env->xregs[22];
5604 env->banked_r13[bank_number(ARM_CPU_MODE_UND)] = env->xregs[23];
5607 /* Registers x24-x30 are mapped to r8-r14 in FIQ mode. If we are in FIQ
5608 * mode, then we can copy to r8-r14. Otherwise, we copy to the
5609 * FIQ bank for r8-r14.
5611 if (mode == ARM_CPU_MODE_FIQ) {
5612 for (i = 24; i < 31; i++) {
5613 env->regs[i - 16] = env->xregs[i]; /* X[24:30] -> R[8:14] */
5616 for (i = 24; i < 29; i++) {
5617 env->fiq_regs[i - 24] = env->xregs[i];
5619 env->banked_r13[bank_number(ARM_CPU_MODE_FIQ)] = env->xregs[29];
5620 env->banked_r14[bank_number(ARM_CPU_MODE_FIQ)] = env->xregs[30];
5623 env->regs[15] = env->pc;
5626 /* Handle a CPU exception. */
5627 void arm_cpu_do_interrupt(CPUState *cs)
5629 ARMCPU *cpu = ARM_CPU(cs);
5630 CPUARMState *env = &cpu->env;
5639 arm_log_exception(cs->exception_index);
5641 if (arm_is_psci_call(cpu, cs->exception_index)) {
5642 arm_handle_psci_call(cpu);
5643 qemu_log_mask(CPU_LOG_INT, "...handled as PSCI call\n");
5647 /* If this is a debug exception we must update the DBGDSCR.MOE bits */
5648 switch (env->exception.syndrome >> ARM_EL_EC_SHIFT) {
5650 case EC_BREAKPOINT_SAME_EL:
5654 case EC_WATCHPOINT_SAME_EL:
5660 case EC_VECTORCATCH:
5669 env->cp15.mdscr_el1 = deposit64(env->cp15.mdscr_el1, 2, 4, moe);
5672 /* TODO: Vectored interrupt controller. */
5673 switch (cs->exception_index) {
5675 new_mode = ARM_CPU_MODE_UND;
5684 if (semihosting_enabled()) {
5685 /* Check for semihosting interrupt. */
5687 mask = arm_lduw_code(env, env->regs[15] - 2, env->bswap_code)
5690 mask = arm_ldl_code(env, env->regs[15] - 4, env->bswap_code)
5693 /* Only intercept calls from privileged modes, to provide some
5694 semblance of security. */
5695 if (((mask == 0x123456 && !env->thumb)
5696 || (mask == 0xab && env->thumb))
5697 && (env->uncached_cpsr & CPSR_M) != ARM_CPU_MODE_USR) {
5698 qemu_log_mask(CPU_LOG_INT,
5699 "...handling as semihosting call 0x%x\n",
5701 env->regs[0] = do_arm_semihosting(env);
5705 new_mode = ARM_CPU_MODE_SVC;
5708 /* The PC already points to the next instruction. */
5712 /* See if this is a semihosting syscall. */
5713 if (env->thumb && semihosting_enabled()) {
5714 mask = arm_lduw_code(env, env->regs[15], env->bswap_code) & 0xff;
5716 && (env->uncached_cpsr & CPSR_M) != ARM_CPU_MODE_USR) {
5718 qemu_log_mask(CPU_LOG_INT,
5719 "...handling as semihosting call 0x%x\n",
5721 env->regs[0] = do_arm_semihosting(env);
5725 env->exception.fsr = 2;
5726 /* Fall through to prefetch abort. */
5727 case EXCP_PREFETCH_ABORT:
5728 A32_BANKED_CURRENT_REG_SET(env, ifsr, env->exception.fsr);
5729 A32_BANKED_CURRENT_REG_SET(env, ifar, env->exception.vaddress);
5730 qemu_log_mask(CPU_LOG_INT, "...with IFSR 0x%x IFAR 0x%x\n",
5731 env->exception.fsr, (uint32_t)env->exception.vaddress);
5732 new_mode = ARM_CPU_MODE_ABT;
5734 mask = CPSR_A | CPSR_I;
5737 case EXCP_DATA_ABORT:
5738 A32_BANKED_CURRENT_REG_SET(env, dfsr, env->exception.fsr);
5739 A32_BANKED_CURRENT_REG_SET(env, dfar, env->exception.vaddress);
5740 qemu_log_mask(CPU_LOG_INT, "...with DFSR 0x%x DFAR 0x%x\n",
5742 (uint32_t)env->exception.vaddress);
5743 new_mode = ARM_CPU_MODE_ABT;
5745 mask = CPSR_A | CPSR_I;
5749 new_mode = ARM_CPU_MODE_IRQ;
5751 /* Disable IRQ and imprecise data aborts. */
5752 mask = CPSR_A | CPSR_I;
5754 if (env->cp15.scr_el3 & SCR_IRQ) {
5755 /* IRQ routed to monitor mode */
5756 new_mode = ARM_CPU_MODE_MON;
5761 new_mode = ARM_CPU_MODE_FIQ;
5763 /* Disable FIQ, IRQ and imprecise data aborts. */
5764 mask = CPSR_A | CPSR_I | CPSR_F;
5765 if (env->cp15.scr_el3 & SCR_FIQ) {
5766 /* FIQ routed to monitor mode */
5767 new_mode = ARM_CPU_MODE_MON;
5772 new_mode = ARM_CPU_MODE_MON;
5774 mask = CPSR_A | CPSR_I | CPSR_F;
5778 cpu_abort(cs, "Unhandled exception 0x%x\n", cs->exception_index);
5779 return; /* Never happens. Keep compiler happy. */
5782 if (new_mode == ARM_CPU_MODE_MON) {
5783 addr += env->cp15.mvbar;
5784 } else if (A32_BANKED_CURRENT_REG_GET(env, sctlr) & SCTLR_V) {
5785 /* High vectors. When enabled, base address cannot be remapped. */
5788 /* ARM v7 architectures provide a vector base address register to remap
5789 * the interrupt vector table.
5790 * This register is only followed in non-monitor mode, and is banked.
5791 * Note: only bits 31:5 are valid.
5793 addr += A32_BANKED_CURRENT_REG_GET(env, vbar);
5796 if ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_MON) {
5797 env->cp15.scr_el3 &= ~SCR_NS;
5800 switch_mode (env, new_mode);
5801 /* For exceptions taken to AArch32 we must clear the SS bit in both
5802 * PSTATE and in the old-state value we save to SPSR_<mode>, so zero it now.
5804 env->uncached_cpsr &= ~PSTATE_SS;
5805 env->spsr = cpsr_read(env);
5806 /* Clear IT bits. */
5807 env->condexec_bits = 0;
5808 /* Switch to the new mode, and to the correct instruction set. */
5809 env->uncached_cpsr = (env->uncached_cpsr & ~CPSR_M) | new_mode;
5811 /* this is a lie, as the was no c1_sys on V4T/V5, but who cares
5812 * and we should just guard the thumb mode on V4 */
5813 if (arm_feature(env, ARM_FEATURE_V4T)) {
5814 env->thumb = (A32_BANKED_CURRENT_REG_GET(env, sctlr) & SCTLR_TE) != 0;
5816 env->regs[14] = env->regs[15] + offset;
5817 env->regs[15] = addr;
5818 cs->interrupt_request |= CPU_INTERRUPT_EXITTB;
5822 /* Return the exception level which controls this address translation regime */
5823 static inline uint32_t regime_el(CPUARMState *env, ARMMMUIdx mmu_idx)
5826 case ARMMMUIdx_S2NS:
5827 case ARMMMUIdx_S1E2:
5829 case ARMMMUIdx_S1E3:
5831 case ARMMMUIdx_S1SE0:
5832 return arm_el_is_aa64(env, 3) ? 1 : 3;
5833 case ARMMMUIdx_S1SE1:
5834 case ARMMMUIdx_S1NSE0:
5835 case ARMMMUIdx_S1NSE1:
5838 g_assert_not_reached();
5842 /* Return true if this address translation regime is secure */
5843 static inline bool regime_is_secure(CPUARMState *env, ARMMMUIdx mmu_idx)
5846 case ARMMMUIdx_S12NSE0:
5847 case ARMMMUIdx_S12NSE1:
5848 case ARMMMUIdx_S1NSE0:
5849 case ARMMMUIdx_S1NSE1:
5850 case ARMMMUIdx_S1E2:
5851 case ARMMMUIdx_S2NS:
5853 case ARMMMUIdx_S1E3:
5854 case ARMMMUIdx_S1SE0:
5855 case ARMMMUIdx_S1SE1:
5858 g_assert_not_reached();
5862 /* Return the SCTLR value which controls this address translation regime */
5863 static inline uint32_t regime_sctlr(CPUARMState *env, ARMMMUIdx mmu_idx)
5865 return env->cp15.sctlr_el[regime_el(env, mmu_idx)];
5868 /* Return true if the specified stage of address translation is disabled */
5869 static inline bool regime_translation_disabled(CPUARMState *env,
5872 if (mmu_idx == ARMMMUIdx_S2NS) {
5873 return (env->cp15.hcr_el2 & HCR_VM) == 0;
5875 return (regime_sctlr(env, mmu_idx) & SCTLR_M) == 0;
5878 /* Return the TCR controlling this translation regime */
5879 static inline TCR *regime_tcr(CPUARMState *env, ARMMMUIdx mmu_idx)
5881 if (mmu_idx == ARMMMUIdx_S2NS) {
5882 return &env->cp15.vtcr_el2;
5884 return &env->cp15.tcr_el[regime_el(env, mmu_idx)];
5887 /* Return the TTBR associated with this translation regime */
5888 static inline uint64_t regime_ttbr(CPUARMState *env, ARMMMUIdx mmu_idx,
5891 if (mmu_idx == ARMMMUIdx_S2NS) {
5892 return env->cp15.vttbr_el2;
5895 return env->cp15.ttbr0_el[regime_el(env, mmu_idx)];
5897 return env->cp15.ttbr1_el[regime_el(env, mmu_idx)];
5901 /* Return true if the translation regime is using LPAE format page tables */
5902 static inline bool regime_using_lpae_format(CPUARMState *env,
5905 int el = regime_el(env, mmu_idx);
5906 if (el == 2 || arm_el_is_aa64(env, el)) {
5909 if (arm_feature(env, ARM_FEATURE_LPAE)
5910 && (regime_tcr(env, mmu_idx)->raw_tcr & TTBCR_EAE)) {
5916 static inline bool regime_is_user(CPUARMState *env, ARMMMUIdx mmu_idx)
5919 case ARMMMUIdx_S1SE0:
5920 case ARMMMUIdx_S1NSE0:
5924 case ARMMMUIdx_S12NSE0:
5925 case ARMMMUIdx_S12NSE1:
5926 g_assert_not_reached();
5930 /* Translate section/page access permissions to page
5931 * R/W protection flags
5934 * @mmu_idx: MMU index indicating required translation regime
5935 * @ap: The 3-bit access permissions (AP[2:0])
5936 * @domain_prot: The 2-bit domain access permissions
5938 static inline int ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx,
5939 int ap, int domain_prot)
5941 bool is_user = regime_is_user(env, mmu_idx);
5943 if (domain_prot == 3) {
5944 return PAGE_READ | PAGE_WRITE;
5949 if (arm_feature(env, ARM_FEATURE_V7)) {
5952 switch (regime_sctlr(env, mmu_idx) & (SCTLR_S | SCTLR_R)) {
5954 return is_user ? 0 : PAGE_READ;
5961 return is_user ? 0 : PAGE_READ | PAGE_WRITE;
5966 return PAGE_READ | PAGE_WRITE;
5969 return PAGE_READ | PAGE_WRITE;
5970 case 4: /* Reserved. */
5973 return is_user ? 0 : PAGE_READ;
5977 if (!arm_feature(env, ARM_FEATURE_V6K)) {
5982 g_assert_not_reached();
5986 /* Translate section/page access permissions to page
5987 * R/W protection flags.
5989 * @ap: The 2-bit simple AP (AP[2:1])
5990 * @is_user: TRUE if accessing from PL0
5992 static inline int simple_ap_to_rw_prot_is_user(int ap, bool is_user)
5996 return is_user ? 0 : PAGE_READ | PAGE_WRITE;
5998 return PAGE_READ | PAGE_WRITE;
6000 return is_user ? 0 : PAGE_READ;
6004 g_assert_not_reached();
6009 simple_ap_to_rw_prot(CPUARMState *env, ARMMMUIdx mmu_idx, int ap)
6011 return simple_ap_to_rw_prot_is_user(ap, regime_is_user(env, mmu_idx));
6014 /* Translate section/page access permissions to protection flags
6017 * @mmu_idx: MMU index indicating required translation regime
6018 * @is_aa64: TRUE if AArch64
6019 * @ap: The 2-bit simple AP (AP[2:1])
6020 * @ns: NS (non-secure) bit
6021 * @xn: XN (execute-never) bit
6022 * @pxn: PXN (privileged execute-never) bit
6024 static int get_S1prot(CPUARMState *env, ARMMMUIdx mmu_idx, bool is_aa64,
6025 int ap, int ns, int xn, int pxn)
6027 bool is_user = regime_is_user(env, mmu_idx);
6028 int prot_rw, user_rw;
6032 assert(mmu_idx != ARMMMUIdx_S2NS);
6034 user_rw = simple_ap_to_rw_prot_is_user(ap, true);
6038 prot_rw = simple_ap_to_rw_prot_is_user(ap, false);
6041 if (ns && arm_is_secure(env) && (env->cp15.scr_el3 & SCR_SIF)) {
6045 /* TODO have_wxn should be replaced with
6046 * ARM_FEATURE_V8 || (ARM_FEATURE_V7 && ARM_FEATURE_EL2)
6047 * when ARM_FEATURE_EL2 starts getting set. For now we assume all LPAE
6048 * compatible processors have EL2, which is required for [U]WXN.
6050 have_wxn = arm_feature(env, ARM_FEATURE_LPAE);
6053 wxn = regime_sctlr(env, mmu_idx) & SCTLR_WXN;
6057 switch (regime_el(env, mmu_idx)) {
6060 xn = pxn || (user_rw & PAGE_WRITE);
6067 } else if (arm_feature(env, ARM_FEATURE_V7)) {
6068 switch (regime_el(env, mmu_idx)) {
6072 xn = xn || !(user_rw & PAGE_READ);
6076 uwxn = regime_sctlr(env, mmu_idx) & SCTLR_UWXN;
6078 xn = xn || !(prot_rw & PAGE_READ) || pxn ||
6079 (uwxn && (user_rw & PAGE_WRITE));
6089 if (xn || (wxn && (prot_rw & PAGE_WRITE))) {
6092 return prot_rw | PAGE_EXEC;
6095 static bool get_level1_table_address(CPUARMState *env, ARMMMUIdx mmu_idx,
6096 uint32_t *table, uint32_t address)
6098 /* Note that we can only get here for an AArch32 PL0/PL1 lookup */
6099 TCR *tcr = regime_tcr(env, mmu_idx);
6101 if (address & tcr->mask) {
6102 if (tcr->raw_tcr & TTBCR_PD1) {
6103 /* Translation table walk disabled for TTBR1 */
6106 *table = regime_ttbr(env, mmu_idx, 1) & 0xffffc000;
6108 if (tcr->raw_tcr & TTBCR_PD0) {
6109 /* Translation table walk disabled for TTBR0 */
6112 *table = regime_ttbr(env, mmu_idx, 0) & tcr->base_mask;
6114 *table |= (address >> 18) & 0x3ffc;
6118 /* All loads done in the course of a page table walk go through here.
6119 * TODO: rather than ignoring errors from physical memory reads (which
6120 * are external aborts in ARM terminology) we should propagate this
6121 * error out so that we can turn it into a Data Abort if this walk
6122 * was being done for a CPU load/store or an address translation instruction
6123 * (but not if it was for a debug access).
6125 static uint32_t arm_ldl_ptw(CPUState *cs, hwaddr addr, bool is_secure)
6127 MemTxAttrs attrs = {};
6129 attrs.secure = is_secure;
6130 return address_space_ldl(cs->as, addr, attrs, NULL);
6133 static uint64_t arm_ldq_ptw(CPUState *cs, hwaddr addr, bool is_secure)
6135 MemTxAttrs attrs = {};
6137 attrs.secure = is_secure;
6138 return address_space_ldq(cs->as, addr, attrs, NULL);
6141 static bool get_phys_addr_v5(CPUARMState *env, uint32_t address,
6142 int access_type, ARMMMUIdx mmu_idx,
6143 hwaddr *phys_ptr, int *prot,
6144 target_ulong *page_size, uint32_t *fsr)
6146 CPUState *cs = CPU(arm_env_get_cpu(env));
6157 /* Pagetable walk. */
6158 /* Lookup l1 descriptor. */
6159 if (!get_level1_table_address(env, mmu_idx, &table, address)) {
6160 /* Section translation fault if page walk is disabled by PD0 or PD1 */
6164 desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx));
6166 domain = (desc >> 5) & 0x0f;
6167 if (regime_el(env, mmu_idx) == 1) {
6168 dacr = env->cp15.dacr_ns;
6170 dacr = env->cp15.dacr_s;
6172 domain_prot = (dacr >> (domain * 2)) & 3;
6174 /* Section translation fault. */
6178 if (domain_prot == 0 || domain_prot == 2) {
6180 code = 9; /* Section domain fault. */
6182 code = 11; /* Page domain fault. */
6187 phys_addr = (desc & 0xfff00000) | (address & 0x000fffff);
6188 ap = (desc >> 10) & 3;
6190 *page_size = 1024 * 1024;
6192 /* Lookup l2 entry. */
6194 /* Coarse pagetable. */
6195 table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc);
6197 /* Fine pagetable. */
6198 table = (desc & 0xfffff000) | ((address >> 8) & 0xffc);
6200 desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx));
6202 case 0: /* Page translation fault. */
6205 case 1: /* 64k page. */
6206 phys_addr = (desc & 0xffff0000) | (address & 0xffff);
6207 ap = (desc >> (4 + ((address >> 13) & 6))) & 3;
6208 *page_size = 0x10000;
6210 case 2: /* 4k page. */
6211 phys_addr = (desc & 0xfffff000) | (address & 0xfff);
6212 ap = (desc >> (4 + ((address >> 9) & 6))) & 3;
6213 *page_size = 0x1000;
6215 case 3: /* 1k page, or ARMv6/XScale "extended small (4k) page" */
6217 /* ARMv6/XScale extended small page format */
6218 if (arm_feature(env, ARM_FEATURE_XSCALE)
6219 || arm_feature(env, ARM_FEATURE_V6)) {
6220 phys_addr = (desc & 0xfffff000) | (address & 0xfff);
6221 *page_size = 0x1000;
6223 /* UNPREDICTABLE in ARMv5; we choose to take a
6224 * page translation fault.
6230 phys_addr = (desc & 0xfffffc00) | (address & 0x3ff);
6233 ap = (desc >> 4) & 3;
6236 /* Never happens, but compiler isn't smart enough to tell. */
6241 *prot = ap_to_rw_prot(env, mmu_idx, ap, domain_prot);
6242 *prot |= *prot ? PAGE_EXEC : 0;
6243 if (!(*prot & (1 << access_type))) {
6244 /* Access permission fault. */
6247 *phys_ptr = phys_addr;
6250 *fsr = code | (domain << 4);
6254 static bool get_phys_addr_v6(CPUARMState *env, uint32_t address,
6255 int access_type, ARMMMUIdx mmu_idx,
6256 hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot,
6257 target_ulong *page_size, uint32_t *fsr)
6259 CPUState *cs = CPU(arm_env_get_cpu(env));
6273 /* Pagetable walk. */
6274 /* Lookup l1 descriptor. */
6275 if (!get_level1_table_address(env, mmu_idx, &table, address)) {
6276 /* Section translation fault if page walk is disabled by PD0 or PD1 */
6280 desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx));
6282 if (type == 0 || (type == 3 && !arm_feature(env, ARM_FEATURE_PXN))) {
6283 /* Section translation fault, or attempt to use the encoding
6284 * which is Reserved on implementations without PXN.
6289 if ((type == 1) || !(desc & (1 << 18))) {
6290 /* Page or Section. */
6291 domain = (desc >> 5) & 0x0f;
6293 if (regime_el(env, mmu_idx) == 1) {
6294 dacr = env->cp15.dacr_ns;
6296 dacr = env->cp15.dacr_s;
6298 domain_prot = (dacr >> (domain * 2)) & 3;
6299 if (domain_prot == 0 || domain_prot == 2) {
6301 code = 9; /* Section domain fault. */
6303 code = 11; /* Page domain fault. */
6308 if (desc & (1 << 18)) {
6310 phys_addr = (desc & 0xff000000) | (address & 0x00ffffff);
6311 phys_addr |= (uint64_t)extract32(desc, 20, 4) << 32;
6312 phys_addr |= (uint64_t)extract32(desc, 5, 4) << 36;
6313 *page_size = 0x1000000;
6316 phys_addr = (desc & 0xfff00000) | (address & 0x000fffff);
6317 *page_size = 0x100000;
6319 ap = ((desc >> 10) & 3) | ((desc >> 13) & 4);
6320 xn = desc & (1 << 4);
6323 ns = extract32(desc, 19, 1);
6325 if (arm_feature(env, ARM_FEATURE_PXN)) {
6326 pxn = (desc >> 2) & 1;
6328 ns = extract32(desc, 3, 1);
6329 /* Lookup l2 entry. */
6330 table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc);
6331 desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx));
6332 ap = ((desc >> 4) & 3) | ((desc >> 7) & 4);
6334 case 0: /* Page translation fault. */
6337 case 1: /* 64k page. */
6338 phys_addr = (desc & 0xffff0000) | (address & 0xffff);
6339 xn = desc & (1 << 15);
6340 *page_size = 0x10000;
6342 case 2: case 3: /* 4k page. */
6343 phys_addr = (desc & 0xfffff000) | (address & 0xfff);
6345 *page_size = 0x1000;
6348 /* Never happens, but compiler isn't smart enough to tell. */
6353 if (domain_prot == 3) {
6354 *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
6356 if (pxn && !regime_is_user(env, mmu_idx)) {
6359 if (xn && access_type == 2)
6362 if (arm_feature(env, ARM_FEATURE_V6K) &&
6363 (regime_sctlr(env, mmu_idx) & SCTLR_AFE)) {
6364 /* The simplified model uses AP[0] as an access control bit. */
6365 if ((ap & 1) == 0) {
6366 /* Access flag fault. */
6367 code = (code == 15) ? 6 : 3;
6370 *prot = simple_ap_to_rw_prot(env, mmu_idx, ap >> 1);
6372 *prot = ap_to_rw_prot(env, mmu_idx, ap, domain_prot);
6377 if (!(*prot & (1 << access_type))) {
6378 /* Access permission fault. */
6383 /* The NS bit will (as required by the architecture) have no effect if
6384 * the CPU doesn't support TZ or this is a non-secure translation
6385 * regime, because the attribute will already be non-secure.
6387 attrs->secure = false;
6389 *phys_ptr = phys_addr;
6392 *fsr = code | (domain << 4);
6396 /* Fault type for long-descriptor MMU fault reporting; this corresponds
6397 * to bits [5..2] in the STATUS field in long-format DFSR/IFSR.
6400 translation_fault = 1,
6402 permission_fault = 3,
6405 static bool get_phys_addr_lpae(CPUARMState *env, target_ulong address,
6406 int access_type, ARMMMUIdx mmu_idx,
6407 hwaddr *phys_ptr, MemTxAttrs *txattrs, int *prot,
6408 target_ulong *page_size_ptr, uint32_t *fsr)
6410 CPUState *cs = CPU(arm_env_get_cpu(env));
6411 /* Read an LPAE long-descriptor translation table. */
6412 MMUFaultType fault_type = translation_fault;
6419 hwaddr descaddr, descmask;
6420 uint32_t tableattrs;
6421 target_ulong page_size;
6423 int32_t granule_sz = 9;
6424 int32_t va_size = 32;
6426 TCR *tcr = regime_tcr(env, mmu_idx);
6427 int ap, ns, xn, pxn;
6428 uint32_t el = regime_el(env, mmu_idx);
6429 bool ttbr1_valid = true;
6432 * This code does not handle the different format TCR for VTCR_EL2.
6433 * This code also does not support shareability levels.
6434 * Attribute and permission bit handling should also be checked when adding
6435 * support for those page table walks.
6437 if (arm_el_is_aa64(env, el)) {
6440 if (mmu_idx != ARMMMUIdx_S2NS) {
6441 tbi = extract64(tcr->raw_tcr, 20, 1);
6444 if (extract64(address, 55, 1)) {
6445 tbi = extract64(tcr->raw_tcr, 38, 1);
6447 tbi = extract64(tcr->raw_tcr, 37, 1);
6452 /* If we are in 64-bit EL2 or EL3 then there is no TTBR1, so mark it
6456 ttbr1_valid = false;
6459 /* There is no TTBR1 for EL2 */
6461 ttbr1_valid = false;
6465 /* Determine whether this address is in the region controlled by
6466 * TTBR0 or TTBR1 (or if it is in neither region and should fault).
6467 * This is a Non-secure PL0/1 stage 1 translation, so controlled by
6468 * TTBCR/TTBR0/TTBR1 in accordance with ARM ARM DDI0406C table B-32:
6470 uint32_t t0sz = extract32(tcr->raw_tcr, 0, 6);
6471 if (va_size == 64) {
6472 t0sz = MIN(t0sz, 39);
6473 t0sz = MAX(t0sz, 16);
6475 uint32_t t1sz = extract32(tcr->raw_tcr, 16, 6);
6476 if (va_size == 64) {
6477 t1sz = MIN(t1sz, 39);
6478 t1sz = MAX(t1sz, 16);
6480 if (t0sz && !extract64(address, va_size - t0sz, t0sz - tbi)) {
6481 /* there is a ttbr0 region and we are in it (high bits all zero) */
6483 } else if (ttbr1_valid && t1sz &&
6484 !extract64(~address, va_size - t1sz, t1sz - tbi)) {
6485 /* there is a ttbr1 region and we are in it (high bits all one) */
6488 /* ttbr0 region is "everything not in the ttbr1 region" */
6490 } else if (!t1sz && ttbr1_valid) {
6491 /* ttbr1 region is "everything not in the ttbr0 region" */
6494 /* in the gap between the two regions, this is a Translation fault */
6495 fault_type = translation_fault;
6499 /* Note that QEMU ignores shareability and cacheability attributes,
6500 * so we don't need to do anything with the SH, ORGN, IRGN fields
6501 * in the TTBCR. Similarly, TTBCR:A1 selects whether we get the
6502 * ASID from TTBR0 or TTBR1, but QEMU's TLB doesn't currently
6503 * implement any ASID-like capability so we can ignore it (instead
6504 * we will always flush the TLB any time the ASID is changed).
6506 if (ttbr_select == 0) {
6507 ttbr = regime_ttbr(env, mmu_idx, 0);
6509 epd = extract32(tcr->raw_tcr, 7, 1);
6513 tg = extract32(tcr->raw_tcr, 14, 2);
6514 if (tg == 1) { /* 64KB pages */
6517 if (tg == 2) { /* 16KB pages */
6521 /* We should only be here if TTBR1 is valid */
6522 assert(ttbr1_valid);
6524 ttbr = regime_ttbr(env, mmu_idx, 1);
6525 epd = extract32(tcr->raw_tcr, 23, 1);
6528 tg = extract32(tcr->raw_tcr, 30, 2);
6529 if (tg == 3) { /* 64KB pages */
6532 if (tg == 1) { /* 16KB pages */
6537 /* Here we should have set up all the parameters for the translation:
6538 * va_size, ttbr, epd, tsz, granule_sz, tbi
6542 /* Translation table walk disabled => Translation fault on TLB miss
6543 * Note: This is always 0 on 64-bit EL2 and EL3.
6548 /* The starting level depends on the virtual address size (which can be
6549 * up to 48 bits) and the translation granule size. It indicates the number
6550 * of strides (granule_sz bits at a time) needed to consume the bits
6551 * of the input address. In the pseudocode this is:
6552 * level = 4 - RoundUp((inputsize - grainsize) / stride)
6553 * where their 'inputsize' is our 'va_size - tsz', 'grainsize' is
6554 * our 'granule_sz + 3' and 'stride' is our 'granule_sz'.
6555 * Applying the usual "rounded up m/n is (m+n-1)/n" and simplifying:
6556 * = 4 - (va_size - tsz - granule_sz - 3 + granule_sz - 1) / granule_sz
6557 * = 4 - (va_size - tsz - 4) / granule_sz;
6559 level = 4 - (va_size - tsz - 4) / granule_sz;
6561 /* Clear the vaddr bits which aren't part of the within-region address,
6562 * so that we don't have to special case things when calculating the
6563 * first descriptor address.
6566 address &= (1ULL << (va_size - tsz)) - 1;
6569 descmask = (1ULL << (granule_sz + 3)) - 1;
6571 /* Now we can extract the actual base address from the TTBR */
6572 descaddr = extract64(ttbr, 0, 48);
6573 descaddr &= ~((1ULL << (va_size - tsz - (granule_sz * (4 - level)))) - 1);
6575 /* Secure accesses start with the page table in secure memory and
6576 * can be downgraded to non-secure at any step. Non-secure accesses
6577 * remain non-secure. We implement this by just ORing in the NSTable/NS
6578 * bits at each step.
6580 tableattrs = regime_is_secure(env, mmu_idx) ? 0 : (1 << 4);
6582 uint64_t descriptor;
6585 descaddr |= (address >> (granule_sz * (4 - level))) & descmask;
6587 nstable = extract32(tableattrs, 4, 1);
6588 descriptor = arm_ldq_ptw(cs, descaddr, !nstable);
6589 if (!(descriptor & 1) ||
6590 (!(descriptor & 2) && (level == 3))) {
6591 /* Invalid, or the Reserved level 3 encoding */
6594 descaddr = descriptor & 0xfffffff000ULL;
6596 if ((descriptor & 2) && (level < 3)) {
6597 /* Table entry. The top five bits are attributes which may
6598 * propagate down through lower levels of the table (and
6599 * which are all arranged so that 0 means "no effect", so
6600 * we can gather them up by ORing in the bits at each level).
6602 tableattrs |= extract64(descriptor, 59, 5);
6606 /* Block entry at level 1 or 2, or page entry at level 3.
6607 * These are basically the same thing, although the number
6608 * of bits we pull in from the vaddr varies.
6610 page_size = (1ULL << ((granule_sz * (4 - level)) + 3));
6611 descaddr |= (address & (page_size - 1));
6612 /* Extract attributes from the descriptor and merge with table attrs */
6613 attrs = extract64(descriptor, 2, 10)
6614 | (extract64(descriptor, 52, 12) << 10);
6615 attrs |= extract32(tableattrs, 0, 2) << 11; /* XN, PXN */
6616 attrs |= extract32(tableattrs, 3, 1) << 5; /* APTable[1] => AP[2] */
6617 /* The sense of AP[1] vs APTable[0] is reversed, as APTable[0] == 1
6618 * means "force PL1 access only", which means forcing AP[1] to 0.
6620 if (extract32(tableattrs, 2, 1)) {
6623 attrs |= nstable << 3; /* NS */
6626 /* Here descaddr is the final physical address, and attributes
6629 fault_type = access_fault;
6630 if ((attrs & (1 << 8)) == 0) {
6635 ap = extract32(attrs, 4, 2);
6636 ns = extract32(attrs, 3, 1);
6637 xn = extract32(attrs, 12, 1);
6638 pxn = extract32(attrs, 11, 1);
6640 *prot = get_S1prot(env, mmu_idx, va_size == 64, ap, ns, xn, pxn);
6642 fault_type = permission_fault;
6643 if (!(*prot & (1 << access_type))) {
6648 /* The NS bit will (as required by the architecture) have no effect if
6649 * the CPU doesn't support TZ or this is a non-secure translation
6650 * regime, because the attribute will already be non-secure.
6652 txattrs->secure = false;
6654 *phys_ptr = descaddr;
6655 *page_size_ptr = page_size;
6659 /* Long-descriptor format IFSR/DFSR value */
6660 *fsr = (1 << 9) | (fault_type << 2) | level;
6664 static inline void get_phys_addr_pmsav7_default(CPUARMState *env,
6666 int32_t address, int *prot)
6668 *prot = PAGE_READ | PAGE_WRITE;
6670 case 0xF0000000 ... 0xFFFFFFFF:
6671 if (regime_sctlr(env, mmu_idx) & SCTLR_V) { /* hivecs execing is ok */
6675 case 0x00000000 ... 0x7FFFFFFF:
6682 static bool get_phys_addr_pmsav7(CPUARMState *env, uint32_t address,
6683 int access_type, ARMMMUIdx mmu_idx,
6684 hwaddr *phys_ptr, int *prot, uint32_t *fsr)
6686 ARMCPU *cpu = arm_env_get_cpu(env);
6688 bool is_user = regime_is_user(env, mmu_idx);
6690 *phys_ptr = address;
6693 if (regime_translation_disabled(env, mmu_idx)) { /* MPU disabled */
6694 get_phys_addr_pmsav7_default(env, mmu_idx, address, prot);
6695 } else { /* MPU enabled */
6696 for (n = (int)cpu->pmsav7_dregion - 1; n >= 0; n--) {
6698 uint32_t base = env->pmsav7.drbar[n];
6699 uint32_t rsize = extract32(env->pmsav7.drsr[n], 1, 5);
6703 if (!(env->pmsav7.drsr[n] & 0x1)) {
6708 qemu_log_mask(LOG_GUEST_ERROR, "DRSR.Rsize field can not be 0");
6712 rmask = (1ull << rsize) - 1;
6715 qemu_log_mask(LOG_GUEST_ERROR, "DRBAR %" PRIx32 " misaligned "
6716 "to DRSR region size, mask = %" PRIx32,
6721 if (address < base || address > base + rmask) {
6725 /* Region matched */
6727 if (rsize >= 8) { /* no subregions for regions < 256 bytes */
6729 uint32_t srdis_mask;
6731 rsize -= 3; /* sub region size (power of 2) */
6732 snd = ((address - base) >> rsize) & 0x7;
6733 srdis = extract32(env->pmsav7.drsr[n], snd + 8, 1);
6735 srdis_mask = srdis ? 0x3 : 0x0;
6736 for (i = 2; i <= 8 && rsize < TARGET_PAGE_BITS; i *= 2) {
6737 /* This will check in groups of 2, 4 and then 8, whether
6738 * the subregion bits are consistent. rsize is incremented
6739 * back up to give the region size, considering consistent
6740 * adjacent subregions as one region. Stop testing if rsize
6741 * is already big enough for an entire QEMU page.
6743 int snd_rounded = snd & ~(i - 1);
6744 uint32_t srdis_multi = extract32(env->pmsav7.drsr[n],
6745 snd_rounded + 8, i);
6746 if (srdis_mask ^ srdis_multi) {
6749 srdis_mask = (srdis_mask << i) | srdis_mask;
6753 if (rsize < TARGET_PAGE_BITS) {
6754 qemu_log_mask(LOG_UNIMP, "No support for MPU (sub)region"
6755 "alignment of %" PRIu32 " bits. Minimum is %d\n",
6756 rsize, TARGET_PAGE_BITS);
6765 if (n == -1) { /* no hits */
6766 if (cpu->pmsav7_dregion &&
6767 (is_user || !(regime_sctlr(env, mmu_idx) & SCTLR_BR))) {
6768 /* background fault */
6772 get_phys_addr_pmsav7_default(env, mmu_idx, address, prot);
6773 } else { /* a MPU hit! */
6774 uint32_t ap = extract32(env->pmsav7.dracr[n], 8, 3);
6776 if (is_user) { /* User mode AP bit decoding */
6781 break; /* no access */
6783 *prot |= PAGE_WRITE;
6787 *prot |= PAGE_READ | PAGE_EXEC;
6790 qemu_log_mask(LOG_GUEST_ERROR,
6791 "Bad value for AP bits in DRACR %"
6794 } else { /* Priv. mode AP bits decoding */
6797 break; /* no access */
6801 *prot |= PAGE_WRITE;
6805 *prot |= PAGE_READ | PAGE_EXEC;
6808 qemu_log_mask(LOG_GUEST_ERROR,
6809 "Bad value for AP bits in DRACR %"
6815 if (env->pmsav7.dracr[n] & (1 << 12)) {
6816 *prot &= ~PAGE_EXEC;
6821 *fsr = 0x00d; /* Permission fault */
6822 return !(*prot & (1 << access_type));
6825 static bool get_phys_addr_pmsav5(CPUARMState *env, uint32_t address,
6826 int access_type, ARMMMUIdx mmu_idx,
6827 hwaddr *phys_ptr, int *prot, uint32_t *fsr)
6832 bool is_user = regime_is_user(env, mmu_idx);
6834 *phys_ptr = address;
6835 for (n = 7; n >= 0; n--) {
6836 base = env->cp15.c6_region[n];
6837 if ((base & 1) == 0) {
6840 mask = 1 << ((base >> 1) & 0x1f);
6841 /* Keep this shift separate from the above to avoid an
6842 (undefined) << 32. */
6843 mask = (mask << 1) - 1;
6844 if (((base ^ address) & ~mask) == 0) {
6853 if (access_type == 2) {
6854 mask = env->cp15.pmsav5_insn_ap;
6856 mask = env->cp15.pmsav5_data_ap;
6858 mask = (mask >> (n * 4)) & 0xf;
6868 *prot = PAGE_READ | PAGE_WRITE;
6873 *prot |= PAGE_WRITE;
6877 *prot = PAGE_READ | PAGE_WRITE;
6890 /* Bad permission. */
6898 /* get_phys_addr - get the physical address for this virtual address
6900 * Find the physical address corresponding to the given virtual address,
6901 * by doing a translation table walk on MMU based systems or using the
6902 * MPU state on MPU based systems.
6904 * Returns false if the translation was successful. Otherwise, phys_ptr, attrs,
6905 * prot and page_size may not be filled in, and the populated fsr value provides
6906 * information on why the translation aborted, in the format of a
6907 * DFSR/IFSR fault register, with the following caveats:
6908 * * we honour the short vs long DFSR format differences.
6909 * * the WnR bit is never set (the caller must do this).
6910 * * for PSMAv5 based systems we don't bother to return a full FSR format
6914 * @address: virtual address to get physical address for
6915 * @access_type: 0 for read, 1 for write, 2 for execute
6916 * @mmu_idx: MMU index indicating required translation regime
6917 * @phys_ptr: set to the physical address corresponding to the virtual address
6918 * @attrs: set to the memory transaction attributes to use
6919 * @prot: set to the permissions for the page containing phys_ptr
6920 * @page_size: set to the size of the page containing phys_ptr
6921 * @fsr: set to the DFSR/IFSR value on failure
6923 static inline bool get_phys_addr(CPUARMState *env, target_ulong address,
6924 int access_type, ARMMMUIdx mmu_idx,
6925 hwaddr *phys_ptr, MemTxAttrs *attrs, int *prot,
6926 target_ulong *page_size, uint32_t *fsr)
6928 if (mmu_idx == ARMMMUIdx_S12NSE0 || mmu_idx == ARMMMUIdx_S12NSE1) {
6929 /* TODO: when we support EL2 we should here call ourselves recursively
6930 * to do the stage 1 and then stage 2 translations. The arm_ld*_ptw
6931 * functions will also need changing to perform ARMMMUIdx_S2NS loads
6932 * rather than direct physical memory loads when appropriate.
6933 * For non-EL2 CPUs a stage1+stage2 translation is just stage 1.
6935 assert(!arm_feature(env, ARM_FEATURE_EL2));
6936 mmu_idx += ARMMMUIdx_S1NSE0;
6939 /* The page table entries may downgrade secure to non-secure, but
6940 * cannot upgrade an non-secure translation regime's attributes
6943 attrs->secure = regime_is_secure(env, mmu_idx);
6944 attrs->user = regime_is_user(env, mmu_idx);
6946 /* Fast Context Switch Extension. This doesn't exist at all in v8.
6947 * In v7 and earlier it affects all stage 1 translations.
6949 if (address < 0x02000000 && mmu_idx != ARMMMUIdx_S2NS
6950 && !arm_feature(env, ARM_FEATURE_V8)) {
6951 if (regime_el(env, mmu_idx) == 3) {
6952 address += env->cp15.fcseidr_s;
6954 address += env->cp15.fcseidr_ns;
6958 /* pmsav7 has special handling for when MPU is disabled so call it before
6959 * the common MMU/MPU disabled check below.
6961 if (arm_feature(env, ARM_FEATURE_MPU) &&
6962 arm_feature(env, ARM_FEATURE_V7)) {
6963 *page_size = TARGET_PAGE_SIZE;
6964 return get_phys_addr_pmsav7(env, address, access_type, mmu_idx,
6965 phys_ptr, prot, fsr);
6968 if (regime_translation_disabled(env, mmu_idx)) {
6969 /* MMU/MPU disabled. */
6970 *phys_ptr = address;
6971 *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
6972 *page_size = TARGET_PAGE_SIZE;
6976 if (arm_feature(env, ARM_FEATURE_MPU)) {
6978 *page_size = TARGET_PAGE_SIZE;
6979 return get_phys_addr_pmsav5(env, address, access_type, mmu_idx,
6980 phys_ptr, prot, fsr);
6983 if (regime_using_lpae_format(env, mmu_idx)) {
6984 return get_phys_addr_lpae(env, address, access_type, mmu_idx, phys_ptr,
6985 attrs, prot, page_size, fsr);
6986 } else if (regime_sctlr(env, mmu_idx) & SCTLR_XP) {
6987 return get_phys_addr_v6(env, address, access_type, mmu_idx, phys_ptr,
6988 attrs, prot, page_size, fsr);
6990 return get_phys_addr_v5(env, address, access_type, mmu_idx, phys_ptr,
6991 prot, page_size, fsr);
6995 /* Walk the page table and (if the mapping exists) add the page
6996 * to the TLB. Return false on success, or true on failure. Populate
6997 * fsr with ARM DFSR/IFSR fault register format value on failure.
6999 bool arm_tlb_fill(CPUState *cs, vaddr address,
7000 int access_type, int mmu_idx, uint32_t *fsr)
7002 ARMCPU *cpu = ARM_CPU(cs);
7003 CPUARMState *env = &cpu->env;
7005 target_ulong page_size;
7008 MemTxAttrs attrs = {};
7010 ret = get_phys_addr(env, address, access_type, mmu_idx, &phys_addr,
7011 &attrs, &prot, &page_size, fsr);
7013 /* Map a single [sub]page. */
7014 phys_addr &= TARGET_PAGE_MASK;
7015 address &= TARGET_PAGE_MASK;
7016 tlb_set_page_with_attrs(cs, address, phys_addr, attrs,
7017 prot, mmu_idx, page_size);
7024 hwaddr arm_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
7026 ARMCPU *cpu = ARM_CPU(cs);
7027 CPUARMState *env = &cpu->env;
7029 target_ulong page_size;
7033 MemTxAttrs attrs = {};
7035 ret = get_phys_addr(env, addr, 0, cpu_mmu_index(env, false), &phys_addr,
7036 &attrs, &prot, &page_size, &fsr);
7045 void HELPER(set_r13_banked)(CPUARMState *env, uint32_t mode, uint32_t val)
7047 if ((env->uncached_cpsr & CPSR_M) == mode) {
7048 env->regs[13] = val;
7050 env->banked_r13[bank_number(mode)] = val;
7054 uint32_t HELPER(get_r13_banked)(CPUARMState *env, uint32_t mode)
7056 if ((env->uncached_cpsr & CPSR_M) == mode) {
7057 return env->regs[13];
7059 return env->banked_r13[bank_number(mode)];
7063 uint32_t HELPER(v7m_mrs)(CPUARMState *env, uint32_t reg)
7065 ARMCPU *cpu = arm_env_get_cpu(env);
7069 return xpsr_read(env) & 0xf8000000;
7071 return xpsr_read(env) & 0xf80001ff;
7073 return xpsr_read(env) & 0xff00fc00;
7075 return xpsr_read(env) & 0xff00fdff;
7077 return xpsr_read(env) & 0x000001ff;
7079 return xpsr_read(env) & 0x0700fc00;
7081 return xpsr_read(env) & 0x0700edff;
7083 return env->v7m.current_sp ? env->v7m.other_sp : env->regs[13];
7085 return env->v7m.current_sp ? env->regs[13] : env->v7m.other_sp;
7086 case 16: /* PRIMASK */
7087 return (env->daif & PSTATE_I) != 0;
7088 case 17: /* BASEPRI */
7089 case 18: /* BASEPRI_MAX */
7090 return env->v7m.basepri;
7091 case 19: /* FAULTMASK */
7092 return (env->daif & PSTATE_F) != 0;
7093 case 20: /* CONTROL */
7094 return env->v7m.control;
7096 /* ??? For debugging only. */
7097 cpu_abort(CPU(cpu), "Unimplemented system register read (%d)\n", reg);
7102 void HELPER(v7m_msr)(CPUARMState *env, uint32_t reg, uint32_t val)
7104 ARMCPU *cpu = arm_env_get_cpu(env);
7108 xpsr_write(env, val, 0xf8000000);
7111 xpsr_write(env, val, 0xf8000000);
7114 xpsr_write(env, val, 0xfe00fc00);
7117 xpsr_write(env, val, 0xfe00fc00);
7120 /* IPSR bits are readonly. */
7123 xpsr_write(env, val, 0x0600fc00);
7126 xpsr_write(env, val, 0x0600fc00);
7129 if (env->v7m.current_sp)
7130 env->v7m.other_sp = val;
7132 env->regs[13] = val;
7135 if (env->v7m.current_sp)
7136 env->regs[13] = val;
7138 env->v7m.other_sp = val;
7140 case 16: /* PRIMASK */
7142 env->daif |= PSTATE_I;
7144 env->daif &= ~PSTATE_I;
7147 case 17: /* BASEPRI */
7148 env->v7m.basepri = val & 0xff;
7150 case 18: /* BASEPRI_MAX */
7152 if (val != 0 && (val < env->v7m.basepri || env->v7m.basepri == 0))
7153 env->v7m.basepri = val;
7155 case 19: /* FAULTMASK */
7157 env->daif |= PSTATE_F;
7159 env->daif &= ~PSTATE_F;
7162 case 20: /* CONTROL */
7163 env->v7m.control = val & 3;
7164 switch_v7m_sp(env, (val & 2) != 0);
7167 /* ??? For debugging only. */
7168 cpu_abort(CPU(cpu), "Unimplemented system register write (%d)\n", reg);
7175 void HELPER(dc_zva)(CPUARMState *env, uint64_t vaddr_in)
7177 /* Implement DC ZVA, which zeroes a fixed-length block of memory.
7178 * Note that we do not implement the (architecturally mandated)
7179 * alignment fault for attempts to use this on Device memory
7180 * (which matches the usual QEMU behaviour of not implementing either
7181 * alignment faults or any memory attribute handling).
7184 ARMCPU *cpu = arm_env_get_cpu(env);
7185 uint64_t blocklen = 4 << cpu->dcz_blocksize;
7186 uint64_t vaddr = vaddr_in & ~(blocklen - 1);
7188 #ifndef CONFIG_USER_ONLY
7190 /* Slightly awkwardly, QEMU's TARGET_PAGE_SIZE may be less than
7191 * the block size so we might have to do more than one TLB lookup.
7192 * We know that in fact for any v8 CPU the page size is at least 4K
7193 * and the block size must be 2K or less, but TARGET_PAGE_SIZE is only
7194 * 1K as an artefact of legacy v5 subpage support being present in the
7195 * same QEMU executable.
7197 int maxidx = DIV_ROUND_UP(blocklen, TARGET_PAGE_SIZE);
7198 void *hostaddr[maxidx];
7200 unsigned mmu_idx = cpu_mmu_index(env, false);
7201 TCGMemOpIdx oi = make_memop_idx(MO_UB, mmu_idx);
7203 for (try = 0; try < 2; try++) {
7205 for (i = 0; i < maxidx; i++) {
7206 hostaddr[i] = tlb_vaddr_to_host(env,
7207 vaddr + TARGET_PAGE_SIZE * i,
7214 /* If it's all in the TLB it's fair game for just writing to;
7215 * we know we don't need to update dirty status, etc.
7217 for (i = 0; i < maxidx - 1; i++) {
7218 memset(hostaddr[i], 0, TARGET_PAGE_SIZE);
7220 memset(hostaddr[i], 0, blocklen - (i * TARGET_PAGE_SIZE));
7223 /* OK, try a store and see if we can populate the tlb. This
7224 * might cause an exception if the memory isn't writable,
7225 * in which case we will longjmp out of here. We must for
7226 * this purpose use the actual register value passed to us
7227 * so that we get the fault address right.
7229 helper_ret_stb_mmu(env, vaddr_in, 0, oi, GETRA());
7230 /* Now we can populate the other TLB entries, if any */
7231 for (i = 0; i < maxidx; i++) {
7232 uint64_t va = vaddr + TARGET_PAGE_SIZE * i;
7233 if (va != (vaddr_in & TARGET_PAGE_MASK)) {
7234 helper_ret_stb_mmu(env, va, 0, oi, GETRA());
7239 /* Slow path (probably attempt to do this to an I/O device or
7240 * similar, or clearing of a block of code we have translations
7241 * cached for). Just do a series of byte writes as the architecture
7242 * demands. It's not worth trying to use a cpu_physical_memory_map(),
7243 * memset(), unmap() sequence here because:
7244 * + we'd need to account for the blocksize being larger than a page
7245 * + the direct-RAM access case is almost always going to be dealt
7246 * with in the fastpath code above, so there's no speed benefit
7247 * + we would have to deal with the map returning NULL because the
7248 * bounce buffer was in use
7250 for (i = 0; i < blocklen; i++) {
7251 helper_ret_stb_mmu(env, vaddr + i, 0, oi, GETRA());
7255 memset(g2h(vaddr), 0, blocklen);
7259 /* Note that signed overflow is undefined in C. The following routines are
7260 careful to use unsigned types where modulo arithmetic is required.
7261 Failure to do so _will_ break on newer gcc. */
7263 /* Signed saturating arithmetic. */
7265 /* Perform 16-bit signed saturating addition. */
7266 static inline uint16_t add16_sat(uint16_t a, uint16_t b)
7271 if (((res ^ a) & 0x8000) && !((a ^ b) & 0x8000)) {
7280 /* Perform 8-bit signed saturating addition. */
7281 static inline uint8_t add8_sat(uint8_t a, uint8_t b)
7286 if (((res ^ a) & 0x80) && !((a ^ b) & 0x80)) {
7295 /* Perform 16-bit signed saturating subtraction. */
7296 static inline uint16_t sub16_sat(uint16_t a, uint16_t b)
7301 if (((res ^ a) & 0x8000) && ((a ^ b) & 0x8000)) {
7310 /* Perform 8-bit signed saturating subtraction. */
7311 static inline uint8_t sub8_sat(uint8_t a, uint8_t b)
7316 if (((res ^ a) & 0x80) && ((a ^ b) & 0x80)) {
7325 #define ADD16(a, b, n) RESULT(add16_sat(a, b), n, 16);
7326 #define SUB16(a, b, n) RESULT(sub16_sat(a, b), n, 16);
7327 #define ADD8(a, b, n) RESULT(add8_sat(a, b), n, 8);
7328 #define SUB8(a, b, n) RESULT(sub8_sat(a, b), n, 8);
7331 #include "op_addsub.h"
7333 /* Unsigned saturating arithmetic. */
7334 static inline uint16_t add16_usat(uint16_t a, uint16_t b)
7343 static inline uint16_t sub16_usat(uint16_t a, uint16_t b)
7351 static inline uint8_t add8_usat(uint8_t a, uint8_t b)
7360 static inline uint8_t sub8_usat(uint8_t a, uint8_t b)
7368 #define ADD16(a, b, n) RESULT(add16_usat(a, b), n, 16);
7369 #define SUB16(a, b, n) RESULT(sub16_usat(a, b), n, 16);
7370 #define ADD8(a, b, n) RESULT(add8_usat(a, b), n, 8);
7371 #define SUB8(a, b, n) RESULT(sub8_usat(a, b), n, 8);
7374 #include "op_addsub.h"
7376 /* Signed modulo arithmetic. */
7377 #define SARITH16(a, b, n, op) do { \
7379 sum = (int32_t)(int16_t)(a) op (int32_t)(int16_t)(b); \
7380 RESULT(sum, n, 16); \
7382 ge |= 3 << (n * 2); \
7385 #define SARITH8(a, b, n, op) do { \
7387 sum = (int32_t)(int8_t)(a) op (int32_t)(int8_t)(b); \
7388 RESULT(sum, n, 8); \
7394 #define ADD16(a, b, n) SARITH16(a, b, n, +)
7395 #define SUB16(a, b, n) SARITH16(a, b, n, -)
7396 #define ADD8(a, b, n) SARITH8(a, b, n, +)
7397 #define SUB8(a, b, n) SARITH8(a, b, n, -)
7401 #include "op_addsub.h"
7403 /* Unsigned modulo arithmetic. */
7404 #define ADD16(a, b, n) do { \
7406 sum = (uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b); \
7407 RESULT(sum, n, 16); \
7408 if ((sum >> 16) == 1) \
7409 ge |= 3 << (n * 2); \
7412 #define ADD8(a, b, n) do { \
7414 sum = (uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b); \
7415 RESULT(sum, n, 8); \
7416 if ((sum >> 8) == 1) \
7420 #define SUB16(a, b, n) do { \
7422 sum = (uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b); \
7423 RESULT(sum, n, 16); \
7424 if ((sum >> 16) == 0) \
7425 ge |= 3 << (n * 2); \
7428 #define SUB8(a, b, n) do { \
7430 sum = (uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b); \
7431 RESULT(sum, n, 8); \
7432 if ((sum >> 8) == 0) \
7439 #include "op_addsub.h"
7441 /* Halved signed arithmetic. */
7442 #define ADD16(a, b, n) \
7443 RESULT(((int32_t)(int16_t)(a) + (int32_t)(int16_t)(b)) >> 1, n, 16)
7444 #define SUB16(a, b, n) \
7445 RESULT(((int32_t)(int16_t)(a) - (int32_t)(int16_t)(b)) >> 1, n, 16)
7446 #define ADD8(a, b, n) \
7447 RESULT(((int32_t)(int8_t)(a) + (int32_t)(int8_t)(b)) >> 1, n, 8)
7448 #define SUB8(a, b, n) \
7449 RESULT(((int32_t)(int8_t)(a) - (int32_t)(int8_t)(b)) >> 1, n, 8)
7452 #include "op_addsub.h"
7454 /* Halved unsigned arithmetic. */
7455 #define ADD16(a, b, n) \
7456 RESULT(((uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b)) >> 1, n, 16)
7457 #define SUB16(a, b, n) \
7458 RESULT(((uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b)) >> 1, n, 16)
7459 #define ADD8(a, b, n) \
7460 RESULT(((uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b)) >> 1, n, 8)
7461 #define SUB8(a, b, n) \
7462 RESULT(((uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b)) >> 1, n, 8)
7465 #include "op_addsub.h"
7467 static inline uint8_t do_usad(uint8_t a, uint8_t b)
7475 /* Unsigned sum of absolute byte differences. */
7476 uint32_t HELPER(usad8)(uint32_t a, uint32_t b)
7479 sum = do_usad(a, b);
7480 sum += do_usad(a >> 8, b >> 8);
7481 sum += do_usad(a >> 16, b >>16);
7482 sum += do_usad(a >> 24, b >> 24);
7486 /* For ARMv6 SEL instruction. */
7487 uint32_t HELPER(sel_flags)(uint32_t flags, uint32_t a, uint32_t b)
7500 return (a & mask) | (b & ~mask);
7503 /* VFP support. We follow the convention used for VFP instructions:
7504 Single precision routines have a "s" suffix, double precision a
7507 /* Convert host exception flags to vfp form. */
7508 static inline int vfp_exceptbits_from_host(int host_bits)
7510 int target_bits = 0;
7512 if (host_bits & float_flag_invalid)
7514 if (host_bits & float_flag_divbyzero)
7516 if (host_bits & float_flag_overflow)
7518 if (host_bits & (float_flag_underflow | float_flag_output_denormal))
7520 if (host_bits & float_flag_inexact)
7521 target_bits |= 0x10;
7522 if (host_bits & float_flag_input_denormal)
7523 target_bits |= 0x80;
7527 uint32_t HELPER(vfp_get_fpscr)(CPUARMState *env)
7532 fpscr = (env->vfp.xregs[ARM_VFP_FPSCR] & 0xffc8ffff)
7533 | (env->vfp.vec_len << 16)
7534 | (env->vfp.vec_stride << 20);
7535 i = get_float_exception_flags(&env->vfp.fp_status);
7536 i |= get_float_exception_flags(&env->vfp.standard_fp_status);
7537 fpscr |= vfp_exceptbits_from_host(i);
7541 uint32_t vfp_get_fpscr(CPUARMState *env)
7543 return HELPER(vfp_get_fpscr)(env);
7546 /* Convert vfp exception flags to target form. */
7547 static inline int vfp_exceptbits_to_host(int target_bits)
7551 if (target_bits & 1)
7552 host_bits |= float_flag_invalid;
7553 if (target_bits & 2)
7554 host_bits |= float_flag_divbyzero;
7555 if (target_bits & 4)
7556 host_bits |= float_flag_overflow;
7557 if (target_bits & 8)
7558 host_bits |= float_flag_underflow;
7559 if (target_bits & 0x10)
7560 host_bits |= float_flag_inexact;
7561 if (target_bits & 0x80)
7562 host_bits |= float_flag_input_denormal;
7566 void HELPER(vfp_set_fpscr)(CPUARMState *env, uint32_t val)
7571 changed = env->vfp.xregs[ARM_VFP_FPSCR];
7572 env->vfp.xregs[ARM_VFP_FPSCR] = (val & 0xffc8ffff);
7573 env->vfp.vec_len = (val >> 16) & 7;
7574 env->vfp.vec_stride = (val >> 20) & 3;
7577 if (changed & (3 << 22)) {
7578 i = (val >> 22) & 3;
7580 case FPROUNDING_TIEEVEN:
7581 i = float_round_nearest_even;
7583 case FPROUNDING_POSINF:
7586 case FPROUNDING_NEGINF:
7587 i = float_round_down;
7589 case FPROUNDING_ZERO:
7590 i = float_round_to_zero;
7593 set_float_rounding_mode(i, &env->vfp.fp_status);
7595 if (changed & (1 << 24)) {
7596 set_flush_to_zero((val & (1 << 24)) != 0, &env->vfp.fp_status);
7597 set_flush_inputs_to_zero((val & (1 << 24)) != 0, &env->vfp.fp_status);
7599 if (changed & (1 << 25))
7600 set_default_nan_mode((val & (1 << 25)) != 0, &env->vfp.fp_status);
7602 i = vfp_exceptbits_to_host(val);
7603 set_float_exception_flags(i, &env->vfp.fp_status);
7604 set_float_exception_flags(0, &env->vfp.standard_fp_status);
7607 void vfp_set_fpscr(CPUARMState *env, uint32_t val)
7609 HELPER(vfp_set_fpscr)(env, val);
7612 #define VFP_HELPER(name, p) HELPER(glue(glue(vfp_,name),p))
7614 #define VFP_BINOP(name) \
7615 float32 VFP_HELPER(name, s)(float32 a, float32 b, void *fpstp) \
7617 float_status *fpst = fpstp; \
7618 return float32_ ## name(a, b, fpst); \
7620 float64 VFP_HELPER(name, d)(float64 a, float64 b, void *fpstp) \
7622 float_status *fpst = fpstp; \
7623 return float64_ ## name(a, b, fpst); \
7635 float32 VFP_HELPER(neg, s)(float32 a)
7637 return float32_chs(a);
7640 float64 VFP_HELPER(neg, d)(float64 a)
7642 return float64_chs(a);
7645 float32 VFP_HELPER(abs, s)(float32 a)
7647 return float32_abs(a);
7650 float64 VFP_HELPER(abs, d)(float64 a)
7652 return float64_abs(a);
7655 float32 VFP_HELPER(sqrt, s)(float32 a, CPUARMState *env)
7657 return float32_sqrt(a, &env->vfp.fp_status);
7660 float64 VFP_HELPER(sqrt, d)(float64 a, CPUARMState *env)
7662 return float64_sqrt(a, &env->vfp.fp_status);
7665 /* XXX: check quiet/signaling case */
7666 #define DO_VFP_cmp(p, type) \
7667 void VFP_HELPER(cmp, p)(type a, type b, CPUARMState *env) \
7670 switch(type ## _compare_quiet(a, b, &env->vfp.fp_status)) { \
7671 case 0: flags = 0x6; break; \
7672 case -1: flags = 0x8; break; \
7673 case 1: flags = 0x2; break; \
7674 default: case 2: flags = 0x3; break; \
7676 env->vfp.xregs[ARM_VFP_FPSCR] = (flags << 28) \
7677 | (env->vfp.xregs[ARM_VFP_FPSCR] & 0x0fffffff); \
7679 void VFP_HELPER(cmpe, p)(type a, type b, CPUARMState *env) \
7682 switch(type ## _compare(a, b, &env->vfp.fp_status)) { \
7683 case 0: flags = 0x6; break; \
7684 case -1: flags = 0x8; break; \
7685 case 1: flags = 0x2; break; \
7686 default: case 2: flags = 0x3; break; \
7688 env->vfp.xregs[ARM_VFP_FPSCR] = (flags << 28) \
7689 | (env->vfp.xregs[ARM_VFP_FPSCR] & 0x0fffffff); \
7691 DO_VFP_cmp(s, float32)
7692 DO_VFP_cmp(d, float64)
7695 /* Integer to float and float to integer conversions */
7697 #define CONV_ITOF(name, fsz, sign) \
7698 float##fsz HELPER(name)(uint32_t x, void *fpstp) \
7700 float_status *fpst = fpstp; \
7701 return sign##int32_to_##float##fsz((sign##int32_t)x, fpst); \
7704 #define CONV_FTOI(name, fsz, sign, round) \
7705 uint32_t HELPER(name)(float##fsz x, void *fpstp) \
7707 float_status *fpst = fpstp; \
7708 if (float##fsz##_is_any_nan(x)) { \
7709 float_raise(float_flag_invalid, fpst); \
7712 return float##fsz##_to_##sign##int32##round(x, fpst); \
7715 #define FLOAT_CONVS(name, p, fsz, sign) \
7716 CONV_ITOF(vfp_##name##to##p, fsz, sign) \
7717 CONV_FTOI(vfp_to##name##p, fsz, sign, ) \
7718 CONV_FTOI(vfp_to##name##z##p, fsz, sign, _round_to_zero)
7720 FLOAT_CONVS(si, s, 32, )
7721 FLOAT_CONVS(si, d, 64, )
7722 FLOAT_CONVS(ui, s, 32, u)
7723 FLOAT_CONVS(ui, d, 64, u)
7729 /* floating point conversion */
7730 float64 VFP_HELPER(fcvtd, s)(float32 x, CPUARMState *env)
7732 float64 r = float32_to_float64(x, &env->vfp.fp_status);
7733 /* ARM requires that S<->D conversion of any kind of NaN generates
7734 * a quiet NaN by forcing the most significant frac bit to 1.
7736 return float64_maybe_silence_nan(r);
7739 float32 VFP_HELPER(fcvts, d)(float64 x, CPUARMState *env)
7741 float32 r = float64_to_float32(x, &env->vfp.fp_status);
7742 /* ARM requires that S<->D conversion of any kind of NaN generates
7743 * a quiet NaN by forcing the most significant frac bit to 1.
7745 return float32_maybe_silence_nan(r);
7748 /* VFP3 fixed point conversion. */
7749 #define VFP_CONV_FIX_FLOAT(name, p, fsz, isz, itype) \
7750 float##fsz HELPER(vfp_##name##to##p)(uint##isz##_t x, uint32_t shift, \
7753 float_status *fpst = fpstp; \
7755 tmp = itype##_to_##float##fsz(x, fpst); \
7756 return float##fsz##_scalbn(tmp, -(int)shift, fpst); \
7759 /* Notice that we want only input-denormal exception flags from the
7760 * scalbn operation: the other possible flags (overflow+inexact if
7761 * we overflow to infinity, output-denormal) aren't correct for the
7762 * complete scale-and-convert operation.
7764 #define VFP_CONV_FLOAT_FIX_ROUND(name, p, fsz, isz, itype, round) \
7765 uint##isz##_t HELPER(vfp_to##name##p##round)(float##fsz x, \
7769 float_status *fpst = fpstp; \
7770 int old_exc_flags = get_float_exception_flags(fpst); \
7772 if (float##fsz##_is_any_nan(x)) { \
7773 float_raise(float_flag_invalid, fpst); \
7776 tmp = float##fsz##_scalbn(x, shift, fpst); \
7777 old_exc_flags |= get_float_exception_flags(fpst) \
7778 & float_flag_input_denormal; \
7779 set_float_exception_flags(old_exc_flags, fpst); \
7780 return float##fsz##_to_##itype##round(tmp, fpst); \
7783 #define VFP_CONV_FIX(name, p, fsz, isz, itype) \
7784 VFP_CONV_FIX_FLOAT(name, p, fsz, isz, itype) \
7785 VFP_CONV_FLOAT_FIX_ROUND(name, p, fsz, isz, itype, _round_to_zero) \
7786 VFP_CONV_FLOAT_FIX_ROUND(name, p, fsz, isz, itype, )
7788 #define VFP_CONV_FIX_A64(name, p, fsz, isz, itype) \
7789 VFP_CONV_FIX_FLOAT(name, p, fsz, isz, itype) \
7790 VFP_CONV_FLOAT_FIX_ROUND(name, p, fsz, isz, itype, )
7792 VFP_CONV_FIX(sh, d, 64, 64, int16)
7793 VFP_CONV_FIX(sl, d, 64, 64, int32)
7794 VFP_CONV_FIX_A64(sq, d, 64, 64, int64)
7795 VFP_CONV_FIX(uh, d, 64, 64, uint16)
7796 VFP_CONV_FIX(ul, d, 64, 64, uint32)
7797 VFP_CONV_FIX_A64(uq, d, 64, 64, uint64)
7798 VFP_CONV_FIX(sh, s, 32, 32, int16)
7799 VFP_CONV_FIX(sl, s, 32, 32, int32)
7800 VFP_CONV_FIX_A64(sq, s, 32, 64, int64)
7801 VFP_CONV_FIX(uh, s, 32, 32, uint16)
7802 VFP_CONV_FIX(ul, s, 32, 32, uint32)
7803 VFP_CONV_FIX_A64(uq, s, 32, 64, uint64)
7805 #undef VFP_CONV_FIX_FLOAT
7806 #undef VFP_CONV_FLOAT_FIX_ROUND
7808 /* Set the current fp rounding mode and return the old one.
7809 * The argument is a softfloat float_round_ value.
7811 uint32_t HELPER(set_rmode)(uint32_t rmode, CPUARMState *env)
7813 float_status *fp_status = &env->vfp.fp_status;
7815 uint32_t prev_rmode = get_float_rounding_mode(fp_status);
7816 set_float_rounding_mode(rmode, fp_status);
7821 /* Set the current fp rounding mode in the standard fp status and return
7822 * the old one. This is for NEON instructions that need to change the
7823 * rounding mode but wish to use the standard FPSCR values for everything
7824 * else. Always set the rounding mode back to the correct value after
7826 * The argument is a softfloat float_round_ value.
7828 uint32_t HELPER(set_neon_rmode)(uint32_t rmode, CPUARMState *env)
7830 float_status *fp_status = &env->vfp.standard_fp_status;
7832 uint32_t prev_rmode = get_float_rounding_mode(fp_status);
7833 set_float_rounding_mode(rmode, fp_status);
7838 /* Half precision conversions. */
7839 static float32 do_fcvt_f16_to_f32(uint32_t a, CPUARMState *env, float_status *s)
7841 int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0;
7842 float32 r = float16_to_float32(make_float16(a), ieee, s);
7844 return float32_maybe_silence_nan(r);
7849 static uint32_t do_fcvt_f32_to_f16(float32 a, CPUARMState *env, float_status *s)
7851 int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0;
7852 float16 r = float32_to_float16(a, ieee, s);
7854 r = float16_maybe_silence_nan(r);
7856 return float16_val(r);
7859 float32 HELPER(neon_fcvt_f16_to_f32)(uint32_t a, CPUARMState *env)
7861 return do_fcvt_f16_to_f32(a, env, &env->vfp.standard_fp_status);
7864 uint32_t HELPER(neon_fcvt_f32_to_f16)(float32 a, CPUARMState *env)
7866 return do_fcvt_f32_to_f16(a, env, &env->vfp.standard_fp_status);
7869 float32 HELPER(vfp_fcvt_f16_to_f32)(uint32_t a, CPUARMState *env)
7871 return do_fcvt_f16_to_f32(a, env, &env->vfp.fp_status);
7874 uint32_t HELPER(vfp_fcvt_f32_to_f16)(float32 a, CPUARMState *env)
7876 return do_fcvt_f32_to_f16(a, env, &env->vfp.fp_status);
7879 float64 HELPER(vfp_fcvt_f16_to_f64)(uint32_t a, CPUARMState *env)
7881 int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0;
7882 float64 r = float16_to_float64(make_float16(a), ieee, &env->vfp.fp_status);
7884 return float64_maybe_silence_nan(r);
7889 uint32_t HELPER(vfp_fcvt_f64_to_f16)(float64 a, CPUARMState *env)
7891 int ieee = (env->vfp.xregs[ARM_VFP_FPSCR] & (1 << 26)) == 0;
7892 float16 r = float64_to_float16(a, ieee, &env->vfp.fp_status);
7894 r = float16_maybe_silence_nan(r);
7896 return float16_val(r);
7899 #define float32_two make_float32(0x40000000)
7900 #define float32_three make_float32(0x40400000)
7901 #define float32_one_point_five make_float32(0x3fc00000)
7903 float32 HELPER(recps_f32)(float32 a, float32 b, CPUARMState *env)
7905 float_status *s = &env->vfp.standard_fp_status;
7906 if ((float32_is_infinity(a) && float32_is_zero_or_denormal(b)) ||
7907 (float32_is_infinity(b) && float32_is_zero_or_denormal(a))) {
7908 if (!(float32_is_zero(a) || float32_is_zero(b))) {
7909 float_raise(float_flag_input_denormal, s);
7913 return float32_sub(float32_two, float32_mul(a, b, s), s);
7916 float32 HELPER(rsqrts_f32)(float32 a, float32 b, CPUARMState *env)
7918 float_status *s = &env->vfp.standard_fp_status;
7920 if ((float32_is_infinity(a) && float32_is_zero_or_denormal(b)) ||
7921 (float32_is_infinity(b) && float32_is_zero_or_denormal(a))) {
7922 if (!(float32_is_zero(a) || float32_is_zero(b))) {
7923 float_raise(float_flag_input_denormal, s);
7925 return float32_one_point_five;
7927 product = float32_mul(a, b, s);
7928 return float32_div(float32_sub(float32_three, product, s), float32_two, s);
7933 /* Constants 256 and 512 are used in some helpers; we avoid relying on
7934 * int->float conversions at run-time. */
7935 #define float64_256 make_float64(0x4070000000000000LL)
7936 #define float64_512 make_float64(0x4080000000000000LL)
7937 #define float32_maxnorm make_float32(0x7f7fffff)
7938 #define float64_maxnorm make_float64(0x7fefffffffffffffLL)
7940 /* Reciprocal functions
7942 * The algorithm that must be used to calculate the estimate
7943 * is specified by the ARM ARM, see FPRecipEstimate()
7946 static float64 recip_estimate(float64 a, float_status *real_fp_status)
7948 /* These calculations mustn't set any fp exception flags,
7949 * so we use a local copy of the fp_status.
7951 float_status dummy_status = *real_fp_status;
7952 float_status *s = &dummy_status;
7953 /* q = (int)(a * 512.0) */
7954 float64 q = float64_mul(float64_512, a, s);
7955 int64_t q_int = float64_to_int64_round_to_zero(q, s);
7957 /* r = 1.0 / (((double)q + 0.5) / 512.0) */
7958 q = int64_to_float64(q_int, s);
7959 q = float64_add(q, float64_half, s);
7960 q = float64_div(q, float64_512, s);
7961 q = float64_div(float64_one, q, s);
7963 /* s = (int)(256.0 * r + 0.5) */
7964 q = float64_mul(q, float64_256, s);
7965 q = float64_add(q, float64_half, s);
7966 q_int = float64_to_int64_round_to_zero(q, s);
7968 /* return (double)s / 256.0 */
7969 return float64_div(int64_to_float64(q_int, s), float64_256, s);
7972 /* Common wrapper to call recip_estimate */
7973 static float64 call_recip_estimate(float64 num, int off, float_status *fpst)
7975 uint64_t val64 = float64_val(num);
7976 uint64_t frac = extract64(val64, 0, 52);
7977 int64_t exp = extract64(val64, 52, 11);
7979 float64 scaled, estimate;
7981 /* Generate the scaled number for the estimate function */
7983 if (extract64(frac, 51, 1) == 0) {
7985 frac = extract64(frac, 0, 50) << 2;
7987 frac = extract64(frac, 0, 51) << 1;
7991 /* scaled = '0' : '01111111110' : fraction<51:44> : Zeros(44); */
7992 scaled = make_float64((0x3feULL << 52)
7993 | extract64(frac, 44, 8) << 44);
7995 estimate = recip_estimate(scaled, fpst);
7997 /* Build new result */
7998 val64 = float64_val(estimate);
7999 sbit = 0x8000000000000000ULL & val64;
8001 frac = extract64(val64, 0, 52);
8004 frac = 1ULL << 51 | extract64(frac, 1, 51);
8005 } else if (exp == -1) {
8006 frac = 1ULL << 50 | extract64(frac, 2, 50);
8010 return make_float64(sbit | (exp << 52) | frac);
8013 static bool round_to_inf(float_status *fpst, bool sign_bit)
8015 switch (fpst->float_rounding_mode) {
8016 case float_round_nearest_even: /* Round to Nearest */
8018 case float_round_up: /* Round to +Inf */
8020 case float_round_down: /* Round to -Inf */
8022 case float_round_to_zero: /* Round to Zero */
8026 g_assert_not_reached();
8029 float32 HELPER(recpe_f32)(float32 input, void *fpstp)
8031 float_status *fpst = fpstp;
8032 float32 f32 = float32_squash_input_denormal(input, fpst);
8033 uint32_t f32_val = float32_val(f32);
8034 uint32_t f32_sbit = 0x80000000ULL & f32_val;
8035 int32_t f32_exp = extract32(f32_val, 23, 8);
8036 uint32_t f32_frac = extract32(f32_val, 0, 23);
8042 if (float32_is_any_nan(f32)) {
8044 if (float32_is_signaling_nan(f32)) {
8045 float_raise(float_flag_invalid, fpst);
8046 nan = float32_maybe_silence_nan(f32);
8048 if (fpst->default_nan_mode) {
8049 nan = float32_default_nan;
8052 } else if (float32_is_infinity(f32)) {
8053 return float32_set_sign(float32_zero, float32_is_neg(f32));
8054 } else if (float32_is_zero(f32)) {
8055 float_raise(float_flag_divbyzero, fpst);
8056 return float32_set_sign(float32_infinity, float32_is_neg(f32));
8057 } else if ((f32_val & ~(1ULL << 31)) < (1ULL << 21)) {
8058 /* Abs(value) < 2.0^-128 */
8059 float_raise(float_flag_overflow | float_flag_inexact, fpst);
8060 if (round_to_inf(fpst, f32_sbit)) {
8061 return float32_set_sign(float32_infinity, float32_is_neg(f32));
8063 return float32_set_sign(float32_maxnorm, float32_is_neg(f32));
8065 } else if (f32_exp >= 253 && fpst->flush_to_zero) {
8066 float_raise(float_flag_underflow, fpst);
8067 return float32_set_sign(float32_zero, float32_is_neg(f32));
8071 f64 = make_float64(((int64_t)(f32_exp) << 52) | (int64_t)(f32_frac) << 29);
8072 r64 = call_recip_estimate(f64, 253, fpst);
8073 r64_val = float64_val(r64);
8074 r64_exp = extract64(r64_val, 52, 11);
8075 r64_frac = extract64(r64_val, 0, 52);
8077 /* result = sign : result_exp<7:0> : fraction<51:29>; */
8078 return make_float32(f32_sbit |
8079 (r64_exp & 0xff) << 23 |
8080 extract64(r64_frac, 29, 24));
8083 float64 HELPER(recpe_f64)(float64 input, void *fpstp)
8085 float_status *fpst = fpstp;
8086 float64 f64 = float64_squash_input_denormal(input, fpst);
8087 uint64_t f64_val = float64_val(f64);
8088 uint64_t f64_sbit = 0x8000000000000000ULL & f64_val;
8089 int64_t f64_exp = extract64(f64_val, 52, 11);
8095 /* Deal with any special cases */
8096 if (float64_is_any_nan(f64)) {
8098 if (float64_is_signaling_nan(f64)) {
8099 float_raise(float_flag_invalid, fpst);
8100 nan = float64_maybe_silence_nan(f64);
8102 if (fpst->default_nan_mode) {
8103 nan = float64_default_nan;
8106 } else if (float64_is_infinity(f64)) {
8107 return float64_set_sign(float64_zero, float64_is_neg(f64));
8108 } else if (float64_is_zero(f64)) {
8109 float_raise(float_flag_divbyzero, fpst);
8110 return float64_set_sign(float64_infinity, float64_is_neg(f64));
8111 } else if ((f64_val & ~(1ULL << 63)) < (1ULL << 50)) {
8112 /* Abs(value) < 2.0^-1024 */
8113 float_raise(float_flag_overflow | float_flag_inexact, fpst);
8114 if (round_to_inf(fpst, f64_sbit)) {
8115 return float64_set_sign(float64_infinity, float64_is_neg(f64));
8117 return float64_set_sign(float64_maxnorm, float64_is_neg(f64));
8119 } else if (f64_exp >= 2045 && fpst->flush_to_zero) {
8120 float_raise(float_flag_underflow, fpst);
8121 return float64_set_sign(float64_zero, float64_is_neg(f64));
8124 r64 = call_recip_estimate(f64, 2045, fpst);
8125 r64_val = float64_val(r64);
8126 r64_exp = extract64(r64_val, 52, 11);
8127 r64_frac = extract64(r64_val, 0, 52);
8129 /* result = sign : result_exp<10:0> : fraction<51:0> */
8130 return make_float64(f64_sbit |
8131 ((r64_exp & 0x7ff) << 52) |
8135 /* The algorithm that must be used to calculate the estimate
8136 * is specified by the ARM ARM.
8138 static float64 recip_sqrt_estimate(float64 a, float_status *real_fp_status)
8140 /* These calculations mustn't set any fp exception flags,
8141 * so we use a local copy of the fp_status.
8143 float_status dummy_status = *real_fp_status;
8144 float_status *s = &dummy_status;
8148 if (float64_lt(a, float64_half, s)) {
8149 /* range 0.25 <= a < 0.5 */
8151 /* a in units of 1/512 rounded down */
8152 /* q0 = (int)(a * 512.0); */
8153 q = float64_mul(float64_512, a, s);
8154 q_int = float64_to_int64_round_to_zero(q, s);
8156 /* reciprocal root r */
8157 /* r = 1.0 / sqrt(((double)q0 + 0.5) / 512.0); */
8158 q = int64_to_float64(q_int, s);
8159 q = float64_add(q, float64_half, s);
8160 q = float64_div(q, float64_512, s);
8161 q = float64_sqrt(q, s);
8162 q = float64_div(float64_one, q, s);
8164 /* range 0.5 <= a < 1.0 */
8166 /* a in units of 1/256 rounded down */
8167 /* q1 = (int)(a * 256.0); */
8168 q = float64_mul(float64_256, a, s);
8169 int64_t q_int = float64_to_int64_round_to_zero(q, s);
8171 /* reciprocal root r */
8172 /* r = 1.0 /sqrt(((double)q1 + 0.5) / 256); */
8173 q = int64_to_float64(q_int, s);
8174 q = float64_add(q, float64_half, s);
8175 q = float64_div(q, float64_256, s);
8176 q = float64_sqrt(q, s);
8177 q = float64_div(float64_one, q, s);
8179 /* r in units of 1/256 rounded to nearest */
8180 /* s = (int)(256.0 * r + 0.5); */
8182 q = float64_mul(q, float64_256,s );
8183 q = float64_add(q, float64_half, s);
8184 q_int = float64_to_int64_round_to_zero(q, s);
8186 /* return (double)s / 256.0;*/
8187 return float64_div(int64_to_float64(q_int, s), float64_256, s);
8190 float32 HELPER(rsqrte_f32)(float32 input, void *fpstp)
8192 float_status *s = fpstp;
8193 float32 f32 = float32_squash_input_denormal(input, s);
8194 uint32_t val = float32_val(f32);
8195 uint32_t f32_sbit = 0x80000000 & val;
8196 int32_t f32_exp = extract32(val, 23, 8);
8197 uint32_t f32_frac = extract32(val, 0, 23);
8203 if (float32_is_any_nan(f32)) {
8205 if (float32_is_signaling_nan(f32)) {
8206 float_raise(float_flag_invalid, s);
8207 nan = float32_maybe_silence_nan(f32);
8209 if (s->default_nan_mode) {
8210 nan = float32_default_nan;
8213 } else if (float32_is_zero(f32)) {
8214 float_raise(float_flag_divbyzero, s);
8215 return float32_set_sign(float32_infinity, float32_is_neg(f32));
8216 } else if (float32_is_neg(f32)) {
8217 float_raise(float_flag_invalid, s);
8218 return float32_default_nan;
8219 } else if (float32_is_infinity(f32)) {
8220 return float32_zero;
8223 /* Scale and normalize to a double-precision value between 0.25 and 1.0,
8224 * preserving the parity of the exponent. */
8226 f64_frac = ((uint64_t) f32_frac) << 29;
8228 while (extract64(f64_frac, 51, 1) == 0) {
8229 f64_frac = f64_frac << 1;
8230 f32_exp = f32_exp-1;
8232 f64_frac = extract64(f64_frac, 0, 51) << 1;
8235 if (extract64(f32_exp, 0, 1) == 0) {
8236 f64 = make_float64(((uint64_t) f32_sbit) << 32
8240 f64 = make_float64(((uint64_t) f32_sbit) << 32
8245 result_exp = (380 - f32_exp) / 2;
8247 f64 = recip_sqrt_estimate(f64, s);
8249 val64 = float64_val(f64);
8251 val = ((result_exp & 0xff) << 23)
8252 | ((val64 >> 29) & 0x7fffff);
8253 return make_float32(val);
8256 float64 HELPER(rsqrte_f64)(float64 input, void *fpstp)
8258 float_status *s = fpstp;
8259 float64 f64 = float64_squash_input_denormal(input, s);
8260 uint64_t val = float64_val(f64);
8261 uint64_t f64_sbit = 0x8000000000000000ULL & val;
8262 int64_t f64_exp = extract64(val, 52, 11);
8263 uint64_t f64_frac = extract64(val, 0, 52);
8265 uint64_t result_frac;
8267 if (float64_is_any_nan(f64)) {
8269 if (float64_is_signaling_nan(f64)) {
8270 float_raise(float_flag_invalid, s);
8271 nan = float64_maybe_silence_nan(f64);
8273 if (s->default_nan_mode) {
8274 nan = float64_default_nan;
8277 } else if (float64_is_zero(f64)) {
8278 float_raise(float_flag_divbyzero, s);
8279 return float64_set_sign(float64_infinity, float64_is_neg(f64));
8280 } else if (float64_is_neg(f64)) {
8281 float_raise(float_flag_invalid, s);
8282 return float64_default_nan;
8283 } else if (float64_is_infinity(f64)) {
8284 return float64_zero;
8287 /* Scale and normalize to a double-precision value between 0.25 and 1.0,
8288 * preserving the parity of the exponent. */
8291 while (extract64(f64_frac, 51, 1) == 0) {
8292 f64_frac = f64_frac << 1;
8293 f64_exp = f64_exp - 1;
8295 f64_frac = extract64(f64_frac, 0, 51) << 1;
8298 if (extract64(f64_exp, 0, 1) == 0) {
8299 f64 = make_float64(f64_sbit
8303 f64 = make_float64(f64_sbit
8308 result_exp = (3068 - f64_exp) / 2;
8310 f64 = recip_sqrt_estimate(f64, s);
8312 result_frac = extract64(float64_val(f64), 0, 52);
8314 return make_float64(f64_sbit |
8315 ((result_exp & 0x7ff) << 52) |
8319 uint32_t HELPER(recpe_u32)(uint32_t a, void *fpstp)
8321 float_status *s = fpstp;
8324 if ((a & 0x80000000) == 0) {
8328 f64 = make_float64((0x3feULL << 52)
8329 | ((int64_t)(a & 0x7fffffff) << 21));
8331 f64 = recip_estimate(f64, s);
8333 return 0x80000000 | ((float64_val(f64) >> 21) & 0x7fffffff);
8336 uint32_t HELPER(rsqrte_u32)(uint32_t a, void *fpstp)
8338 float_status *fpst = fpstp;
8341 if ((a & 0xc0000000) == 0) {
8345 if (a & 0x80000000) {
8346 f64 = make_float64((0x3feULL << 52)
8347 | ((uint64_t)(a & 0x7fffffff) << 21));
8348 } else { /* bits 31-30 == '01' */
8349 f64 = make_float64((0x3fdULL << 52)
8350 | ((uint64_t)(a & 0x3fffffff) << 22));
8353 f64 = recip_sqrt_estimate(f64, fpst);
8355 return 0x80000000 | ((float64_val(f64) >> 21) & 0x7fffffff);
8358 /* VFPv4 fused multiply-accumulate */
8359 float32 VFP_HELPER(muladd, s)(float32 a, float32 b, float32 c, void *fpstp)
8361 float_status *fpst = fpstp;
8362 return float32_muladd(a, b, c, 0, fpst);
8365 float64 VFP_HELPER(muladd, d)(float64 a, float64 b, float64 c, void *fpstp)
8367 float_status *fpst = fpstp;
8368 return float64_muladd(a, b, c, 0, fpst);
8371 /* ARMv8 round to integral */
8372 float32 HELPER(rints_exact)(float32 x, void *fp_status)
8374 return float32_round_to_int(x, fp_status);
8377 float64 HELPER(rintd_exact)(float64 x, void *fp_status)
8379 return float64_round_to_int(x, fp_status);
8382 float32 HELPER(rints)(float32 x, void *fp_status)
8384 int old_flags = get_float_exception_flags(fp_status), new_flags;
8387 ret = float32_round_to_int(x, fp_status);
8389 /* Suppress any inexact exceptions the conversion produced */
8390 if (!(old_flags & float_flag_inexact)) {
8391 new_flags = get_float_exception_flags(fp_status);
8392 set_float_exception_flags(new_flags & ~float_flag_inexact, fp_status);
8398 float64 HELPER(rintd)(float64 x, void *fp_status)
8400 int old_flags = get_float_exception_flags(fp_status), new_flags;
8403 ret = float64_round_to_int(x, fp_status);
8405 new_flags = get_float_exception_flags(fp_status);
8407 /* Suppress any inexact exceptions the conversion produced */
8408 if (!(old_flags & float_flag_inexact)) {
8409 new_flags = get_float_exception_flags(fp_status);
8410 set_float_exception_flags(new_flags & ~float_flag_inexact, fp_status);
8416 /* Convert ARM rounding mode to softfloat */
8417 int arm_rmode_to_sf(int rmode)
8420 case FPROUNDING_TIEAWAY:
8421 rmode = float_round_ties_away;
8423 case FPROUNDING_ODD:
8424 /* FIXME: add support for TIEAWAY and ODD */
8425 qemu_log_mask(LOG_UNIMP, "arm: unimplemented rounding mode: %d\n",
8427 case FPROUNDING_TIEEVEN:
8429 rmode = float_round_nearest_even;
8431 case FPROUNDING_POSINF:
8432 rmode = float_round_up;
8434 case FPROUNDING_NEGINF:
8435 rmode = float_round_down;
8437 case FPROUNDING_ZERO:
8438 rmode = float_round_to_zero;
8445 * The upper bytes of val (above the number specified by 'bytes') must have
8446 * been zeroed out by the caller.
8448 uint32_t HELPER(crc32)(uint32_t acc, uint32_t val, uint32_t bytes)
8454 /* zlib crc32 converts the accumulator and output to one's complement. */
8455 return crc32(acc ^ 0xffffffff, buf, bytes) ^ 0xffffffff;
8458 uint32_t HELPER(crc32c)(uint32_t acc, uint32_t val, uint32_t bytes)
8464 /* Linux crc32c converts the output to one's complement. */
8465 return crc32c(acc, buf, bytes) ^ 0xffffffff;