2 * PowerPC exception emulation helpers for QEMU.
4 * Copyright (c) 2003-2007 Jocelyn Mayer
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
19 #include "qemu/osdep.h"
20 #include "qemu/main-loop.h"
22 #include "exec/exec-all.h"
24 #include "helper_regs.h"
29 #include "exec/helper-proto.h"
30 #include "exec/cpu_ldst.h"
33 /*****************************************************************************/
34 /* Exception processing */
35 #if !defined(CONFIG_USER_ONLY)
37 static const char *powerpc_excp_name(int excp)
40 case POWERPC_EXCP_CRITICAL: return "CRITICAL";
41 case POWERPC_EXCP_MCHECK: return "MCHECK";
42 case POWERPC_EXCP_DSI: return "DSI";
43 case POWERPC_EXCP_ISI: return "ISI";
44 case POWERPC_EXCP_EXTERNAL: return "EXTERNAL";
45 case POWERPC_EXCP_ALIGN: return "ALIGN";
46 case POWERPC_EXCP_PROGRAM: return "PROGRAM";
47 case POWERPC_EXCP_FPU: return "FPU";
48 case POWERPC_EXCP_SYSCALL: return "SYSCALL";
49 case POWERPC_EXCP_APU: return "APU";
50 case POWERPC_EXCP_DECR: return "DECR";
51 case POWERPC_EXCP_FIT: return "FIT";
52 case POWERPC_EXCP_WDT: return "WDT";
53 case POWERPC_EXCP_DTLB: return "DTLB";
54 case POWERPC_EXCP_ITLB: return "ITLB";
55 case POWERPC_EXCP_DEBUG: return "DEBUG";
56 case POWERPC_EXCP_SPEU: return "SPEU";
57 case POWERPC_EXCP_EFPDI: return "EFPDI";
58 case POWERPC_EXCP_EFPRI: return "EFPRI";
59 case POWERPC_EXCP_EPERFM: return "EPERFM";
60 case POWERPC_EXCP_DOORI: return "DOORI";
61 case POWERPC_EXCP_DOORCI: return "DOORCI";
62 case POWERPC_EXCP_GDOORI: return "GDOORI";
63 case POWERPC_EXCP_GDOORCI: return "GDOORCI";
64 case POWERPC_EXCP_HYPPRIV: return "HYPPRIV";
65 case POWERPC_EXCP_RESET: return "RESET";
66 case POWERPC_EXCP_DSEG: return "DSEG";
67 case POWERPC_EXCP_ISEG: return "ISEG";
68 case POWERPC_EXCP_HDECR: return "HDECR";
69 case POWERPC_EXCP_TRACE: return "TRACE";
70 case POWERPC_EXCP_HDSI: return "HDSI";
71 case POWERPC_EXCP_HISI: return "HISI";
72 case POWERPC_EXCP_HDSEG: return "HDSEG";
73 case POWERPC_EXCP_HISEG: return "HISEG";
74 case POWERPC_EXCP_VPU: return "VPU";
75 case POWERPC_EXCP_PIT: return "PIT";
76 case POWERPC_EXCP_IO: return "IO";
77 case POWERPC_EXCP_RUNM: return "RUNM";
78 case POWERPC_EXCP_EMUL: return "EMUL";
79 case POWERPC_EXCP_IFTLB: return "IFTLB";
80 case POWERPC_EXCP_DLTLB: return "DLTLB";
81 case POWERPC_EXCP_DSTLB: return "DSTLB";
82 case POWERPC_EXCP_FPA: return "FPA";
83 case POWERPC_EXCP_DABR: return "DABR";
84 case POWERPC_EXCP_IABR: return "IABR";
85 case POWERPC_EXCP_SMI: return "SMI";
86 case POWERPC_EXCP_PERFM: return "PERFM";
87 case POWERPC_EXCP_THERM: return "THERM";
88 case POWERPC_EXCP_VPUA: return "VPUA";
89 case POWERPC_EXCP_SOFTP: return "SOFTP";
90 case POWERPC_EXCP_MAINT: return "MAINT";
91 case POWERPC_EXCP_MEXTBR: return "MEXTBR";
92 case POWERPC_EXCP_NMEXTBR: return "NMEXTBR";
93 case POWERPC_EXCP_ITLBE: return "ITLBE";
94 case POWERPC_EXCP_DTLBE: return "DTLBE";
95 case POWERPC_EXCP_VSXU: return "VSXU";
96 case POWERPC_EXCP_FU: return "FU";
97 case POWERPC_EXCP_HV_EMU: return "HV_EMU";
98 case POWERPC_EXCP_HV_MAINT: return "HV_MAINT";
99 case POWERPC_EXCP_HV_FU: return "HV_FU";
100 case POWERPC_EXCP_SDOOR: return "SDOOR";
101 case POWERPC_EXCP_SDOOR_HV: return "SDOOR_HV";
102 case POWERPC_EXCP_HVIRT: return "HVIRT";
103 case POWERPC_EXCP_SYSCALL_VECTORED: return "SYSCALL_VECTORED";
105 g_assert_not_reached();
109 static void dump_syscall(CPUPPCState *env)
111 qemu_log_mask(CPU_LOG_INT, "syscall r0=%016" PRIx64
112 " r3=%016" PRIx64 " r4=%016" PRIx64 " r5=%016" PRIx64
113 " r6=%016" PRIx64 " r7=%016" PRIx64 " r8=%016" PRIx64
114 " nip=" TARGET_FMT_lx "\n",
115 ppc_dump_gpr(env, 0), ppc_dump_gpr(env, 3),
116 ppc_dump_gpr(env, 4), ppc_dump_gpr(env, 5),
117 ppc_dump_gpr(env, 6), ppc_dump_gpr(env, 7),
118 ppc_dump_gpr(env, 8), env->nip);
121 static void dump_hcall(CPUPPCState *env)
123 qemu_log_mask(CPU_LOG_INT, "hypercall r3=%016" PRIx64
124 " r4=%016" PRIx64 " r5=%016" PRIx64 " r6=%016" PRIx64
125 " r7=%016" PRIx64 " r8=%016" PRIx64 " r9=%016" PRIx64
126 " r10=%016" PRIx64 " r11=%016" PRIx64 " r12=%016" PRIx64
127 " nip=" TARGET_FMT_lx "\n",
128 ppc_dump_gpr(env, 3), ppc_dump_gpr(env, 4),
129 ppc_dump_gpr(env, 5), ppc_dump_gpr(env, 6),
130 ppc_dump_gpr(env, 7), ppc_dump_gpr(env, 8),
131 ppc_dump_gpr(env, 9), ppc_dump_gpr(env, 10),
132 ppc_dump_gpr(env, 11), ppc_dump_gpr(env, 12),
136 static void ppc_excp_debug_sw_tlb(CPUPPCState *env, int excp)
139 target_ulong *miss, *cmp;
142 if (!qemu_loglevel_mask(CPU_LOG_MMU)) {
146 if (excp == POWERPC_EXCP_IFTLB) {
149 miss = &env->spr[SPR_IMISS];
150 cmp = &env->spr[SPR_ICMP];
152 if (excp == POWERPC_EXCP_DLTLB) {
158 miss = &env->spr[SPR_DMISS];
159 cmp = &env->spr[SPR_DCMP];
161 qemu_log("6xx %sTLB miss: %cM " TARGET_FMT_lx " %cC "
162 TARGET_FMT_lx " H1 " TARGET_FMT_lx " H2 "
163 TARGET_FMT_lx " %08x\n", es, en, *miss, en, *cmp,
164 env->spr[SPR_HASH1], env->spr[SPR_HASH2],
169 static int powerpc_reset_wakeup(CPUState *cs, CPUPPCState *env, int excp,
172 /* We no longer are in a PM state */
173 env->resume_as_sreset = false;
175 /* Pretend to be returning from doze always as we don't lose state */
176 *msr |= SRR1_WS_NOLOSS;
178 /* Machine checks are sent normally */
179 if (excp == POWERPC_EXCP_MCHECK) {
183 case POWERPC_EXCP_RESET:
184 *msr |= SRR1_WAKERESET;
186 case POWERPC_EXCP_EXTERNAL:
189 case POWERPC_EXCP_DECR:
190 *msr |= SRR1_WAKEDEC;
192 case POWERPC_EXCP_SDOOR:
193 *msr |= SRR1_WAKEDBELL;
195 case POWERPC_EXCP_SDOOR_HV:
196 *msr |= SRR1_WAKEHDBELL;
198 case POWERPC_EXCP_HV_MAINT:
199 *msr |= SRR1_WAKEHMI;
201 case POWERPC_EXCP_HVIRT:
202 *msr |= SRR1_WAKEHVI;
205 cpu_abort(cs, "Unsupported exception %d in Power Save mode\n",
208 return POWERPC_EXCP_RESET;
212 * AIL - Alternate Interrupt Location, a mode that allows interrupts to be
213 * taken with the MMU on, and which uses an alternate location (e.g., so the
214 * kernel/hv can map the vectors there with an effective address).
216 * An interrupt is considered to be taken "with AIL" or "AIL applies" if they
217 * are delivered in this way. AIL requires the LPCR to be set to enable this
218 * mode, and then a number of conditions have to be true for AIL to apply.
220 * First of all, SRESET, MCE, and HMI are always delivered without AIL, because
221 * they specifically want to be in real mode (e.g., the MCE might be signaling
222 * a SLB multi-hit which requires SLB flush before the MMU can be enabled).
224 * After that, behaviour depends on the current MSR[IR], MSR[DR], MSR[HV],
225 * whether or not the interrupt changes MSR[HV] from 0 to 1, and the current
226 * radix mode (LPCR[HR]).
228 * POWER8, POWER9 with LPCR[HR]=0
229 * | LPCR[AIL] | MSR[IR||DR] | MSR[HV] | new MSR[HV] | AIL |
230 * +-----------+-------------+---------+-------------+-----+
231 * | a | 00/01/10 | x | x | 0 |
232 * | a | 11 | 0 | 1 | 0 |
233 * | a | 11 | 1 | 1 | a |
234 * | a | 11 | 0 | 0 | a |
235 * +-------------------------------------------------------+
237 * POWER9 with LPCR[HR]=1
238 * | LPCR[AIL] | MSR[IR||DR] | MSR[HV] | new MSR[HV] | AIL |
239 * +-----------+-------------+---------+-------------+-----+
240 * | a | 00/01/10 | x | x | 0 |
241 * | a | 11 | x | x | a |
242 * +-------------------------------------------------------+
244 * The difference with POWER9 being that MSR[HV] 0->1 interrupts can be sent to
245 * the hypervisor in AIL mode if the guest is radix. This is good for
246 * performance but allows the guest to influence the AIL of hypervisor
247 * interrupts using its MSR, and also the hypervisor must disallow guest
248 * interrupts (MSR[HV] 0->0) from using AIL if the hypervisor does not want to
249 * use AIL for its MSR[HV] 0->1 interrupts.
251 * POWER10 addresses those issues with a new LPCR[HAIL] bit that is applied to
252 * interrupts that begin execution with MSR[HV]=1 (so both MSR[HV] 0->1 and
255 * HAIL=1 is equivalent to AIL=3, for interrupts delivered with MSR[HV]=1.
257 * POWER10 behaviour is
258 * | LPCR[AIL] | LPCR[HAIL] | MSR[IR||DR] | MSR[HV] | new MSR[HV] | AIL |
259 * +-----------+------------+-------------+---------+-------------+-----+
260 * | a | h | 00/01/10 | 0 | 0 | 0 |
261 * | a | h | 11 | 0 | 0 | a |
262 * | a | h | x | 0 | 1 | h |
263 * | a | h | 00/01/10 | 1 | 1 | 0 |
264 * | a | h | 11 | 1 | 1 | h |
265 * +--------------------------------------------------------------------+
267 static void ppc_excp_apply_ail(PowerPCCPU *cpu, int excp_model, int excp,
269 target_ulong *new_msr,
270 target_ulong *vector)
272 #if defined(TARGET_PPC64)
273 CPUPPCState *env = &cpu->env;
274 bool mmu_all_on = ((msr >> MSR_IR) & 1) && ((msr >> MSR_DR) & 1);
275 bool hv_escalation = !(msr & MSR_HVB) && (*new_msr & MSR_HVB);
278 if (excp == POWERPC_EXCP_MCHECK ||
279 excp == POWERPC_EXCP_RESET ||
280 excp == POWERPC_EXCP_HV_MAINT) {
281 /* SRESET, MCE, HMI never apply AIL */
285 if (excp_model == POWERPC_EXCP_POWER8 ||
286 excp_model == POWERPC_EXCP_POWER9) {
288 /* AIL only works if MSR[IR] and MSR[DR] are both enabled. */
291 if (hv_escalation && !(env->spr[SPR_LPCR] & LPCR_HR)) {
293 * AIL does not work if there is a MSR[HV] 0->1 transition and the
294 * partition is in HPT mode. For radix guests, such interrupts are
295 * allowed to be delivered to the hypervisor in ail mode.
300 ail = (env->spr[SPR_LPCR] & LPCR_AIL) >> LPCR_AIL_SHIFT;
305 /* AIL=1 is reserved, treat it like AIL=0 */
309 } else if (excp_model == POWERPC_EXCP_POWER10) {
310 if (!mmu_all_on && !hv_escalation) {
312 * AIL works for HV interrupts even with guest MSR[IR/DR] disabled.
313 * Guest->guest and HV->HV interrupts do require MMU on.
318 if (*new_msr & MSR_HVB) {
319 if (!(env->spr[SPR_LPCR] & LPCR_HAIL)) {
320 /* HV interrupts depend on LPCR[HAIL] */
323 ail = 3; /* HAIL=1 gives AIL=3 behaviour for HV interrupts */
325 ail = (env->spr[SPR_LPCR] & LPCR_AIL) >> LPCR_AIL_SHIFT;
330 if (ail == 1 || ail == 2) {
331 /* AIL=1 and AIL=2 are reserved, treat them like AIL=0 */
335 /* Other processors do not support AIL */
340 * AIL applies, so the new MSR gets IR and DR set, and an offset applied
343 *new_msr |= (1 << MSR_IR) | (1 << MSR_DR);
345 if (excp != POWERPC_EXCP_SYSCALL_VECTORED) {
347 *vector |= 0x0000000000018000ull;
348 } else if (ail == 3) {
349 *vector |= 0xc000000000004000ull;
353 * scv AIL is a little different. AIL=2 does not change the address,
354 * only the MSR. AIL=3 replaces the 0x17000 base with 0xc...3000.
357 *vector &= ~0x0000000000017000ull; /* Un-apply the base offset */
358 *vector |= 0xc000000000003000ull; /* Apply scv's AIL=3 offset */
364 static void powerpc_set_excp_state(PowerPCCPU *cpu,
365 target_ulong vector, target_ulong msr)
367 CPUState *cs = CPU(cpu);
368 CPUPPCState *env = &cpu->env;
371 * We don't use hreg_store_msr here as already have treated any
372 * special case that could occur. Just store MSR and update hflags
374 * Note: We *MUST* not use hreg_store_msr() as-is anyway because it
375 * will prevent setting of the HV bit which some exceptions might need
378 env->msr = msr & env->msr_mask;
379 hreg_compute_hflags(env);
381 /* Reset exception state */
382 cs->exception_index = POWERPC_EXCP_NONE;
385 /* Reset the reservation */
386 env->reserve_addr = -1;
389 * Any interrupt is context synchronizing, check if TCG TLB needs
390 * a delayed flush on ppc64
392 check_tlb_flush(env, false);
396 * Note that this function should be greatly optimized when called
397 * with a constant excp, from ppc_hw_interrupt
399 static void powerpc_excp(PowerPCCPU *cpu, int excp)
401 CPUState *cs = CPU(cpu);
402 CPUPPCState *env = &cpu->env;
403 int excp_model = env->excp_model;
404 target_ulong msr, new_msr, vector;
405 int srr0, srr1, lev = -1;
407 if (excp <= POWERPC_EXCP_NONE || excp >= POWERPC_EXCP_NB) {
408 cpu_abort(cs, "Invalid PowerPC exception %d. Aborting\n", excp);
411 qemu_log_mask(CPU_LOG_INT, "Raise exception at " TARGET_FMT_lx
412 " => %s (%d) error=%02x\n", env->nip, powerpc_excp_name(excp),
413 excp, env->error_code);
415 /* new srr1 value excluding must-be-zero bits */
416 if (excp_model == POWERPC_EXCP_BOOKE) {
419 msr = env->msr & ~0x783f0000ULL;
423 * new interrupt handler msr preserves existing HV and ME unless
424 * explicitly overriden
426 new_msr = env->msr & (((target_ulong)1 << MSR_ME) | MSR_HVB);
428 /* target registers */
433 * check for special resume at 0x100 from doze/nap/sleep/winkle on
436 if (env->resume_as_sreset) {
437 excp = powerpc_reset_wakeup(cs, env, excp, &msr);
441 * Hypervisor emulation assistance interrupt only exists on server
442 * arch 2.05 server or later. We also don't want to generate it if
443 * we don't have HVB in msr_mask (PAPR mode).
445 if (excp == POWERPC_EXCP_HV_EMU
446 #if defined(TARGET_PPC64)
447 && !(mmu_is_64bit(env->mmu_model) && (env->msr_mask & MSR_HVB))
448 #endif /* defined(TARGET_PPC64) */
451 excp = POWERPC_EXCP_PROGRAM;
456 * SPEU and VPU share the same IVOR but they exist in different
457 * processors. SPEU is e500v1/2 only and VPU is e6500 only.
459 if (excp_model == POWERPC_EXCP_BOOKE && excp == POWERPC_EXCP_VPU) {
460 excp = POWERPC_EXCP_SPEU;
464 vector = env->excp_vectors[excp];
465 if (vector == (target_ulong)-1ULL) {
466 cpu_abort(cs, "Raised an exception without defined vector %d\n",
470 vector |= env->excp_prefix;
473 case POWERPC_EXCP_CRITICAL: /* Critical input */
474 switch (excp_model) {
475 case POWERPC_EXCP_40x:
479 case POWERPC_EXCP_BOOKE:
480 srr0 = SPR_BOOKE_CSRR0;
481 srr1 = SPR_BOOKE_CSRR1;
483 case POWERPC_EXCP_G2:
489 case POWERPC_EXCP_MCHECK: /* Machine check exception */
492 * Machine check exception is not enabled. Enter
495 fprintf(stderr, "Machine check while not allowed. "
496 "Entering checkstop state\n");
497 if (qemu_log_separate()) {
498 qemu_log("Machine check while not allowed. "
499 "Entering checkstop state\n");
502 cpu_interrupt_exittb(cs);
504 if (env->msr_mask & MSR_HVB) {
506 * ISA specifies HV, but can be delivered to guest with HV
507 * clear (e.g., see FWNMI in PAPR).
509 new_msr |= (target_ulong)MSR_HVB;
512 /* machine check exceptions don't have ME set */
513 new_msr &= ~((target_ulong)1 << MSR_ME);
515 /* XXX: should also have something loaded in DAR / DSISR */
516 switch (excp_model) {
517 case POWERPC_EXCP_40x:
521 case POWERPC_EXCP_BOOKE:
522 /* FIXME: choose one or the other based on CPU type */
523 srr0 = SPR_BOOKE_MCSRR0;
524 srr1 = SPR_BOOKE_MCSRR1;
526 env->spr[SPR_BOOKE_CSRR0] = env->nip;
527 env->spr[SPR_BOOKE_CSRR1] = msr;
533 case POWERPC_EXCP_DSI: /* Data storage exception */
534 trace_ppc_excp_dsi(env->spr[SPR_DSISR], env->spr[SPR_DAR]);
536 case POWERPC_EXCP_ISI: /* Instruction storage exception */
537 trace_ppc_excp_isi(msr, env->nip);
538 msr |= env->error_code;
540 case POWERPC_EXCP_EXTERNAL: /* External input */
547 * Exception targeting modifiers
549 * LPES0 is supported on POWER7/8/9
550 * LPES1 is not supported (old iSeries mode)
552 * On anything else, we behave as if LPES0 is 1
553 * (externals don't alter MSR:HV)
555 #if defined(TARGET_PPC64)
556 if (excp_model == POWERPC_EXCP_POWER7 ||
557 excp_model == POWERPC_EXCP_POWER8 ||
558 excp_model == POWERPC_EXCP_POWER9 ||
559 excp_model == POWERPC_EXCP_POWER10) {
560 lpes0 = !!(env->spr[SPR_LPCR] & LPCR_LPES0);
562 #endif /* defined(TARGET_PPC64) */
568 new_msr |= (target_ulong)MSR_HVB;
569 new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
573 if (env->mpic_proxy) {
574 /* IACK the IRQ on delivery */
575 env->spr[SPR_BOOKE_EPR] = ldl_phys(cs->as, env->mpic_iack);
579 case POWERPC_EXCP_ALIGN: /* Alignment exception */
580 /* Get rS/rD and rA from faulting opcode */
582 * Note: the opcode fields will not be set properly for a
583 * direct store load/store, but nobody cares as nobody
584 * actually uses direct store segments.
586 env->spr[SPR_DSISR] |= (env->error_code & 0x03FF0000) >> 16;
588 case POWERPC_EXCP_PROGRAM: /* Program exception */
589 switch (env->error_code & ~0xF) {
590 case POWERPC_EXCP_FP:
591 if ((msr_fe0 == 0 && msr_fe1 == 0) || msr_fp == 0) {
592 trace_ppc_excp_fp_ignore();
593 cs->exception_index = POWERPC_EXCP_NONE;
599 * FP exceptions always have NIP pointing to the faulting
600 * instruction, so always use store_next and claim we are
601 * precise in the MSR.
604 env->spr[SPR_BOOKE_ESR] = ESR_FP;
606 case POWERPC_EXCP_INVAL:
607 trace_ppc_excp_inval(env->nip);
609 env->spr[SPR_BOOKE_ESR] = ESR_PIL;
611 case POWERPC_EXCP_PRIV:
613 env->spr[SPR_BOOKE_ESR] = ESR_PPR;
615 case POWERPC_EXCP_TRAP:
617 env->spr[SPR_BOOKE_ESR] = ESR_PTR;
620 /* Should never occur */
621 cpu_abort(cs, "Invalid program exception %d. Aborting\n",
626 case POWERPC_EXCP_SYSCALL: /* System call exception */
627 lev = env->error_code;
629 if ((lev == 1) && cpu->vhyp) {
636 * We need to correct the NIP which in this case is supposed
637 * to point to the next instruction
641 /* "PAPR mode" built-in hypercall emulation */
642 if ((lev == 1) && cpu->vhyp) {
643 PPCVirtualHypervisorClass *vhc =
644 PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
645 vhc->hypercall(cpu->vhyp, cpu);
649 new_msr |= (target_ulong)MSR_HVB;
652 case POWERPC_EXCP_SYSCALL_VECTORED: /* scv exception */
653 lev = env->error_code;
656 new_msr |= env->msr & ((target_ulong)1 << MSR_EE);
657 new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
659 vector += lev * 0x20;
664 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
665 case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
666 case POWERPC_EXCP_DECR: /* Decrementer exception */
668 case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
670 trace_ppc_excp_print("FIT");
672 case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
673 trace_ppc_excp_print("WDT");
674 switch (excp_model) {
675 case POWERPC_EXCP_BOOKE:
676 srr0 = SPR_BOOKE_CSRR0;
677 srr1 = SPR_BOOKE_CSRR1;
683 case POWERPC_EXCP_DTLB: /* Data TLB error */
684 case POWERPC_EXCP_ITLB: /* Instruction TLB error */
686 case POWERPC_EXCP_DEBUG: /* Debug interrupt */
687 if (env->flags & POWERPC_FLAG_DE) {
688 /* FIXME: choose one or the other based on CPU type */
689 srr0 = SPR_BOOKE_DSRR0;
690 srr1 = SPR_BOOKE_DSRR1;
692 env->spr[SPR_BOOKE_CSRR0] = env->nip;
693 env->spr[SPR_BOOKE_CSRR1] = msr;
695 /* DBSR already modified by caller */
697 cpu_abort(cs, "Debug exception triggered on unsupported model\n");
700 case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavailable/VPU */
701 env->spr[SPR_BOOKE_ESR] = ESR_SPV;
703 case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
705 case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
706 srr0 = SPR_BOOKE_CSRR0;
707 srr1 = SPR_BOOKE_CSRR1;
709 case POWERPC_EXCP_RESET: /* System reset exception */
710 /* A power-saving exception sets ME, otherwise it is unchanged */
712 /* indicate that we resumed from power save mode */
714 new_msr |= ((target_ulong)1 << MSR_ME);
716 if (env->msr_mask & MSR_HVB) {
718 * ISA specifies HV, but can be delivered to guest with HV
719 * clear (e.g., see FWNMI in PAPR, NMI injection in QEMU).
721 new_msr |= (target_ulong)MSR_HVB;
724 cpu_abort(cs, "Trying to deliver power-saving system reset "
725 "exception %d with no HV support\n", excp);
729 case POWERPC_EXCP_DSEG: /* Data segment exception */
730 case POWERPC_EXCP_ISEG: /* Instruction segment exception */
731 case POWERPC_EXCP_TRACE: /* Trace exception */
733 case POWERPC_EXCP_HISI: /* Hypervisor instruction storage exception */
734 msr |= env->error_code;
736 case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
737 case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
738 case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
739 case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment exception */
740 case POWERPC_EXCP_SDOOR_HV: /* Hypervisor Doorbell interrupt */
741 case POWERPC_EXCP_HV_EMU:
742 case POWERPC_EXCP_HVIRT: /* Hypervisor virtualization */
745 new_msr |= (target_ulong)MSR_HVB;
746 new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
748 case POWERPC_EXCP_VPU: /* Vector unavailable exception */
749 case POWERPC_EXCP_VSXU: /* VSX unavailable exception */
750 case POWERPC_EXCP_FU: /* Facility unavailable exception */
752 env->spr[SPR_FSCR] |= ((target_ulong)env->error_code << 56);
755 case POWERPC_EXCP_HV_FU: /* Hypervisor Facility Unavailable Exception */
757 env->spr[SPR_HFSCR] |= ((target_ulong)env->error_code << FSCR_IC_POS);
760 new_msr |= (target_ulong)MSR_HVB;
761 new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
764 case POWERPC_EXCP_PIT: /* Programmable interval timer interrupt */
765 trace_ppc_excp_print("PIT");
767 case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
768 case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
769 case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
770 switch (excp_model) {
771 case POWERPC_EXCP_602:
772 case POWERPC_EXCP_603:
773 case POWERPC_EXCP_G2:
774 /* Swap temporary saved registers with GPRs */
775 if (!(new_msr & ((target_ulong)1 << MSR_TGPR))) {
776 new_msr |= (target_ulong)1 << MSR_TGPR;
777 hreg_swap_gpr_tgpr(env);
780 case POWERPC_EXCP_7x5:
781 ppc_excp_debug_sw_tlb(env, excp);
783 msr |= env->crf[0] << 28;
784 msr |= env->error_code; /* key, D/I, S/L bits */
785 /* Set way using a LRU mechanism */
786 msr |= ((env->last_way + 1) & (env->nb_ways - 1)) << 17;
789 cpu_abort(cs, "Invalid TLB miss exception\n");
793 case POWERPC_EXCP_EFPDI: /* Embedded floating-point data interrupt */
794 case POWERPC_EXCP_EFPRI: /* Embedded floating-point round interrupt */
795 case POWERPC_EXCP_EPERFM: /* Embedded performance monitor interrupt */
796 case POWERPC_EXCP_IO: /* IO error exception */
797 case POWERPC_EXCP_RUNM: /* Run mode exception */
798 case POWERPC_EXCP_EMUL: /* Emulation trap exception */
799 case POWERPC_EXCP_FPA: /* Floating-point assist exception */
800 case POWERPC_EXCP_DABR: /* Data address breakpoint */
801 case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
802 case POWERPC_EXCP_SMI: /* System management interrupt */
803 case POWERPC_EXCP_THERM: /* Thermal interrupt */
804 case POWERPC_EXCP_PERFM: /* Embedded performance monitor interrupt */
805 case POWERPC_EXCP_VPUA: /* Vector assist exception */
806 case POWERPC_EXCP_SOFTP: /* Soft patch exception */
807 case POWERPC_EXCP_MAINT: /* Maintenance exception */
808 case POWERPC_EXCP_MEXTBR: /* Maskable external breakpoint */
809 case POWERPC_EXCP_NMEXTBR: /* Non maskable external breakpoint */
810 cpu_abort(cs, "%s exception not implemented\n",
811 powerpc_excp_name(excp));
815 cpu_abort(cs, "Invalid PowerPC exception %d. Aborting\n", excp);
820 if (!(env->msr_mask & MSR_HVB)) {
821 if (new_msr & MSR_HVB) {
822 cpu_abort(cs, "Trying to deliver HV exception (MSR) %d with "
823 "no HV support\n", excp);
825 if (srr0 == SPR_HSRR0) {
826 cpu_abort(cs, "Trying to deliver HV exception (HSRR) %d with "
827 "no HV support\n", excp);
832 * Sort out endianness of interrupt, this differs depending on the
833 * CPU, the HV mode, etc...
835 if (ppc_interrupts_little_endian(cpu, !!(new_msr & MSR_HVB))) {
836 new_msr |= (target_ulong)1 << MSR_LE;
839 #if defined(TARGET_PPC64)
840 if (excp_model == POWERPC_EXCP_BOOKE) {
841 if (env->spr[SPR_BOOKE_EPCR] & EPCR_ICM) {
842 /* Cat.64-bit: EPCR.ICM is copied to MSR.CM */
843 new_msr |= (target_ulong)1 << MSR_CM;
845 vector = (uint32_t)vector;
848 if (!msr_isf && !mmu_is_64bit(env->mmu_model)) {
849 vector = (uint32_t)vector;
851 new_msr |= (target_ulong)1 << MSR_SF;
856 if (excp != POWERPC_EXCP_SYSCALL_VECTORED) {
858 env->spr[srr0] = env->nip;
861 env->spr[srr1] = msr;
864 /* This can update new_msr and vector if AIL applies */
865 ppc_excp_apply_ail(cpu, excp_model, excp, msr, &new_msr, &vector);
867 powerpc_set_excp_state(cpu, vector, new_msr);
870 void ppc_cpu_do_interrupt(CPUState *cs)
872 PowerPCCPU *cpu = POWERPC_CPU(cs);
874 powerpc_excp(cpu, cs->exception_index);
877 static void ppc_hw_interrupt(CPUPPCState *env)
879 PowerPCCPU *cpu = env_archcpu(env);
883 if (env->pending_interrupts & (1 << PPC_INTERRUPT_RESET)) {
884 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_RESET);
885 powerpc_excp(cpu, POWERPC_EXCP_RESET);
888 /* Machine check exception */
889 if (env->pending_interrupts & (1 << PPC_INTERRUPT_MCK)) {
890 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_MCK);
891 powerpc_excp(cpu, POWERPC_EXCP_MCHECK);
895 /* External debug exception */
896 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DEBUG)) {
897 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DEBUG);
898 powerpc_excp(cpu, POWERPC_EXCP_DEBUG);
904 * For interrupts that gate on MSR:EE, we need to do something a
905 * bit more subtle, as we need to let them through even when EE is
906 * clear when coming out of some power management states (in order
907 * for them to become a 0x100).
909 async_deliver = (msr_ee != 0) || env->resume_as_sreset;
911 /* Hypervisor decrementer exception */
912 if (env->pending_interrupts & (1 << PPC_INTERRUPT_HDECR)) {
913 /* LPCR will be clear when not supported so this will work */
914 bool hdice = !!(env->spr[SPR_LPCR] & LPCR_HDICE);
915 if ((async_deliver || msr_hv == 0) && hdice) {
916 /* HDEC clears on delivery */
917 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_HDECR);
918 powerpc_excp(cpu, POWERPC_EXCP_HDECR);
923 /* Hypervisor virtualization interrupt */
924 if (env->pending_interrupts & (1 << PPC_INTERRUPT_HVIRT)) {
925 /* LPCR will be clear when not supported so this will work */
926 bool hvice = !!(env->spr[SPR_LPCR] & LPCR_HVICE);
927 if ((async_deliver || msr_hv == 0) && hvice) {
928 powerpc_excp(cpu, POWERPC_EXCP_HVIRT);
933 /* External interrupt can ignore MSR:EE under some circumstances */
934 if (env->pending_interrupts & (1 << PPC_INTERRUPT_EXT)) {
935 bool lpes0 = !!(env->spr[SPR_LPCR] & LPCR_LPES0);
936 bool heic = !!(env->spr[SPR_LPCR] & LPCR_HEIC);
937 /* HEIC blocks delivery to the hypervisor */
938 if ((async_deliver && !(heic && msr_hv && !msr_pr)) ||
939 (env->has_hv_mode && msr_hv == 0 && !lpes0)) {
940 powerpc_excp(cpu, POWERPC_EXCP_EXTERNAL);
945 /* External critical interrupt */
946 if (env->pending_interrupts & (1 << PPC_INTERRUPT_CEXT)) {
947 powerpc_excp(cpu, POWERPC_EXCP_CRITICAL);
951 if (async_deliver != 0) {
952 /* Watchdog timer on embedded PowerPC */
953 if (env->pending_interrupts & (1 << PPC_INTERRUPT_WDT)) {
954 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_WDT);
955 powerpc_excp(cpu, POWERPC_EXCP_WDT);
958 if (env->pending_interrupts & (1 << PPC_INTERRUPT_CDOORBELL)) {
959 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_CDOORBELL);
960 powerpc_excp(cpu, POWERPC_EXCP_DOORCI);
963 /* Fixed interval timer on embedded PowerPC */
964 if (env->pending_interrupts & (1 << PPC_INTERRUPT_FIT)) {
965 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_FIT);
966 powerpc_excp(cpu, POWERPC_EXCP_FIT);
969 /* Programmable interval timer on embedded PowerPC */
970 if (env->pending_interrupts & (1 << PPC_INTERRUPT_PIT)) {
971 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PIT);
972 powerpc_excp(cpu, POWERPC_EXCP_PIT);
975 /* Decrementer exception */
976 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DECR)) {
977 if (ppc_decr_clear_on_delivery(env)) {
978 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DECR);
980 powerpc_excp(cpu, POWERPC_EXCP_DECR);
983 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DOORBELL)) {
984 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DOORBELL);
985 if (is_book3s_arch2x(env)) {
986 powerpc_excp(cpu, POWERPC_EXCP_SDOOR);
988 powerpc_excp(cpu, POWERPC_EXCP_DOORI);
992 if (env->pending_interrupts & (1 << PPC_INTERRUPT_HDOORBELL)) {
993 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_HDOORBELL);
994 powerpc_excp(cpu, POWERPC_EXCP_SDOOR_HV);
997 if (env->pending_interrupts & (1 << PPC_INTERRUPT_PERFM)) {
998 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PERFM);
999 powerpc_excp(cpu, POWERPC_EXCP_PERFM);
1002 /* Thermal interrupt */
1003 if (env->pending_interrupts & (1 << PPC_INTERRUPT_THERM)) {
1004 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_THERM);
1005 powerpc_excp(cpu, POWERPC_EXCP_THERM);
1010 if (env->resume_as_sreset) {
1012 * This is a bug ! It means that has_work took us out of halt without
1013 * anything to deliver while in a PM state that requires getting
1016 * This means we will incorrectly execute past the power management
1017 * instruction instead of triggering a reset.
1019 * It generally means a discrepancy between the wakeup conditions in the
1020 * processor has_work implementation and the logic in this function.
1022 cpu_abort(env_cpu(env),
1023 "Wakeup from PM state but interrupt Undelivered");
1027 void ppc_cpu_do_system_reset(CPUState *cs)
1029 PowerPCCPU *cpu = POWERPC_CPU(cs);
1031 powerpc_excp(cpu, POWERPC_EXCP_RESET);
1034 void ppc_cpu_do_fwnmi_machine_check(CPUState *cs, target_ulong vector)
1036 PowerPCCPU *cpu = POWERPC_CPU(cs);
1037 CPUPPCState *env = &cpu->env;
1038 target_ulong msr = 0;
1041 * Set MSR and NIP for the handler, SRR0/1, DAR and DSISR have already
1044 msr = (1ULL << MSR_ME);
1045 msr |= env->msr & (1ULL << MSR_SF);
1046 if (ppc_interrupts_little_endian(cpu, false)) {
1047 msr |= (1ULL << MSR_LE);
1050 powerpc_set_excp_state(cpu, vector, msr);
1053 bool ppc_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
1055 PowerPCCPU *cpu = POWERPC_CPU(cs);
1056 CPUPPCState *env = &cpu->env;
1058 if (interrupt_request & CPU_INTERRUPT_HARD) {
1059 ppc_hw_interrupt(env);
1060 if (env->pending_interrupts == 0) {
1061 cs->interrupt_request &= ~CPU_INTERRUPT_HARD;
1068 #endif /* !CONFIG_USER_ONLY */
1070 /*****************************************************************************/
1071 /* Exceptions processing helpers */
1073 void raise_exception_err_ra(CPUPPCState *env, uint32_t exception,
1074 uint32_t error_code, uintptr_t raddr)
1076 CPUState *cs = env_cpu(env);
1078 cs->exception_index = exception;
1079 env->error_code = error_code;
1080 cpu_loop_exit_restore(cs, raddr);
1083 void raise_exception_err(CPUPPCState *env, uint32_t exception,
1084 uint32_t error_code)
1086 raise_exception_err_ra(env, exception, error_code, 0);
1089 void raise_exception(CPUPPCState *env, uint32_t exception)
1091 raise_exception_err_ra(env, exception, 0, 0);
1094 void raise_exception_ra(CPUPPCState *env, uint32_t exception,
1097 raise_exception_err_ra(env, exception, 0, raddr);
1101 void helper_raise_exception_err(CPUPPCState *env, uint32_t exception,
1102 uint32_t error_code)
1104 raise_exception_err_ra(env, exception, error_code, 0);
1107 void helper_raise_exception(CPUPPCState *env, uint32_t exception)
1109 raise_exception_err_ra(env, exception, 0, 0);
1113 #if !defined(CONFIG_USER_ONLY)
1115 void helper_store_msr(CPUPPCState *env, target_ulong val)
1117 uint32_t excp = hreg_store_msr(env, val, 0);
1120 CPUState *cs = env_cpu(env);
1121 cpu_interrupt_exittb(cs);
1122 raise_exception(env, excp);
1126 #if defined(TARGET_PPC64)
1127 void helper_scv(CPUPPCState *env, uint32_t lev)
1129 if (env->spr[SPR_FSCR] & (1ull << FSCR_SCV)) {
1130 raise_exception_err(env, POWERPC_EXCP_SYSCALL_VECTORED, lev);
1132 raise_exception_err(env, POWERPC_EXCP_FU, FSCR_IC_SCV);
1136 void helper_pminsn(CPUPPCState *env, powerpc_pm_insn_t insn)
1143 /* Condition for waking up at 0x100 */
1144 env->resume_as_sreset = (insn != PPC_PM_STOP) ||
1145 (env->spr[SPR_PSSCR] & PSSCR_EC);
1147 #endif /* defined(TARGET_PPC64) */
1148 #endif /* CONFIG_TCG */
1150 static void do_rfi(CPUPPCState *env, target_ulong nip, target_ulong msr)
1152 CPUState *cs = env_cpu(env);
1154 /* MSR:POW cannot be set by any form of rfi */
1155 msr &= ~(1ULL << MSR_POW);
1157 #if defined(TARGET_PPC64)
1158 /* Switching to 32-bit ? Crop the nip */
1159 if (!msr_is_64bit(env, msr)) {
1160 nip = (uint32_t)nip;
1163 nip = (uint32_t)nip;
1165 /* XXX: beware: this is false if VLE is supported */
1166 env->nip = nip & ~((target_ulong)0x00000003);
1167 hreg_store_msr(env, msr, 1);
1168 trace_ppc_excp_rfi(env->nip, env->msr);
1170 * No need to raise an exception here, as rfi is always the last
1173 cpu_interrupt_exittb(cs);
1174 /* Reset the reservation */
1175 env->reserve_addr = -1;
1177 /* Context synchronizing: check if TCG TLB needs flush */
1178 check_tlb_flush(env, false);
1182 void helper_rfi(CPUPPCState *env)
1184 do_rfi(env, env->spr[SPR_SRR0], env->spr[SPR_SRR1] & 0xfffffffful);
1187 #define MSR_BOOK3S_MASK
1188 #if defined(TARGET_PPC64)
1189 void helper_rfid(CPUPPCState *env)
1192 * The architecture defines a number of rules for which bits can
1193 * change but in practice, we handle this in hreg_store_msr()
1194 * which will be called by do_rfi(), so there is no need to filter
1197 do_rfi(env, env->spr[SPR_SRR0], env->spr[SPR_SRR1]);
1200 void helper_rfscv(CPUPPCState *env)
1202 do_rfi(env, env->lr, env->ctr);
1205 void helper_hrfid(CPUPPCState *env)
1207 do_rfi(env, env->spr[SPR_HSRR0], env->spr[SPR_HSRR1]);
1211 #if defined(TARGET_PPC64) && !defined(CONFIG_USER_ONLY)
1212 void helper_rfebb(CPUPPCState *env, target_ulong s)
1214 target_ulong msr = env->msr;
1217 * Handling of BESCR bits 32:33 according to PowerISA v3.1:
1219 * "If BESCR 32:33 != 0b00 the instruction is treated as if
1220 * the instruction form were invalid."
1222 if (env->spr[SPR_BESCR] & BESCR_INVALID) {
1223 raise_exception_err(env, POWERPC_EXCP_PROGRAM,
1224 POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL);
1227 env->nip = env->spr[SPR_EBBRR];
1229 /* Switching to 32-bit ? Crop the nip */
1230 if (!msr_is_64bit(env, msr)) {
1231 env->nip = (uint32_t)env->spr[SPR_EBBRR];
1235 env->spr[SPR_BESCR] |= BESCR_GE;
1237 env->spr[SPR_BESCR] &= ~BESCR_GE;
1242 /*****************************************************************************/
1243 /* Embedded PowerPC specific helpers */
1244 void helper_40x_rfci(CPUPPCState *env)
1246 do_rfi(env, env->spr[SPR_40x_SRR2], env->spr[SPR_40x_SRR3]);
1249 void helper_rfci(CPUPPCState *env)
1251 do_rfi(env, env->spr[SPR_BOOKE_CSRR0], env->spr[SPR_BOOKE_CSRR1]);
1254 void helper_rfdi(CPUPPCState *env)
1256 /* FIXME: choose CSRR1 or DSRR1 based on cpu type */
1257 do_rfi(env, env->spr[SPR_BOOKE_DSRR0], env->spr[SPR_BOOKE_DSRR1]);
1260 void helper_rfmci(CPUPPCState *env)
1262 /* FIXME: choose CSRR1 or MCSRR1 based on cpu type */
1263 do_rfi(env, env->spr[SPR_BOOKE_MCSRR0], env->spr[SPR_BOOKE_MCSRR1]);
1265 #endif /* CONFIG_TCG */
1266 #endif /* !defined(CONFIG_USER_ONLY) */
1269 void helper_tw(CPUPPCState *env, target_ulong arg1, target_ulong arg2,
1272 if (!likely(!(((int32_t)arg1 < (int32_t)arg2 && (flags & 0x10)) ||
1273 ((int32_t)arg1 > (int32_t)arg2 && (flags & 0x08)) ||
1274 ((int32_t)arg1 == (int32_t)arg2 && (flags & 0x04)) ||
1275 ((uint32_t)arg1 < (uint32_t)arg2 && (flags & 0x02)) ||
1276 ((uint32_t)arg1 > (uint32_t)arg2 && (flags & 0x01))))) {
1277 raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM,
1278 POWERPC_EXCP_TRAP, GETPC());
1282 #if defined(TARGET_PPC64)
1283 void helper_td(CPUPPCState *env, target_ulong arg1, target_ulong arg2,
1286 if (!likely(!(((int64_t)arg1 < (int64_t)arg2 && (flags & 0x10)) ||
1287 ((int64_t)arg1 > (int64_t)arg2 && (flags & 0x08)) ||
1288 ((int64_t)arg1 == (int64_t)arg2 && (flags & 0x04)) ||
1289 ((uint64_t)arg1 < (uint64_t)arg2 && (flags & 0x02)) ||
1290 ((uint64_t)arg1 > (uint64_t)arg2 && (flags & 0x01))))) {
1291 raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM,
1292 POWERPC_EXCP_TRAP, GETPC());
1298 #if !defined(CONFIG_USER_ONLY)
1299 /*****************************************************************************/
1300 /* PowerPC 601 specific instructions (POWER bridge) */
1303 void helper_rfsvc(CPUPPCState *env)
1305 do_rfi(env, env->lr, env->ctr & 0x0000FFFF);
1308 /* Embedded.Processor Control */
1309 static int dbell2irq(target_ulong rb)
1311 int msg = rb & DBELL_TYPE_MASK;
1315 case DBELL_TYPE_DBELL:
1316 irq = PPC_INTERRUPT_DOORBELL;
1318 case DBELL_TYPE_DBELL_CRIT:
1319 irq = PPC_INTERRUPT_CDOORBELL;
1321 case DBELL_TYPE_G_DBELL:
1322 case DBELL_TYPE_G_DBELL_CRIT:
1323 case DBELL_TYPE_G_DBELL_MC:
1332 void helper_msgclr(CPUPPCState *env, target_ulong rb)
1334 int irq = dbell2irq(rb);
1340 env->pending_interrupts &= ~(1 << irq);
1343 void helper_msgsnd(target_ulong rb)
1345 int irq = dbell2irq(rb);
1346 int pir = rb & DBELL_PIRTAG_MASK;
1353 qemu_mutex_lock_iothread();
1355 PowerPCCPU *cpu = POWERPC_CPU(cs);
1356 CPUPPCState *cenv = &cpu->env;
1358 if ((rb & DBELL_BRDCAST) || (cenv->spr[SPR_BOOKE_PIR] == pir)) {
1359 cenv->pending_interrupts |= 1 << irq;
1360 cpu_interrupt(cs, CPU_INTERRUPT_HARD);
1363 qemu_mutex_unlock_iothread();
1366 /* Server Processor Control */
1368 static bool dbell_type_server(target_ulong rb)
1371 * A Directed Hypervisor Doorbell message is sent only if the
1372 * message type is 5. All other types are reserved and the
1373 * instruction is a no-op
1375 return (rb & DBELL_TYPE_MASK) == DBELL_TYPE_DBELL_SERVER;
1378 void helper_book3s_msgclr(CPUPPCState *env, target_ulong rb)
1380 if (!dbell_type_server(rb)) {
1384 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_HDOORBELL);
1387 static void book3s_msgsnd_common(int pir, int irq)
1391 qemu_mutex_lock_iothread();
1393 PowerPCCPU *cpu = POWERPC_CPU(cs);
1394 CPUPPCState *cenv = &cpu->env;
1396 /* TODO: broadcast message to all threads of the same processor */
1397 if (cenv->spr_cb[SPR_PIR].default_value == pir) {
1398 cenv->pending_interrupts |= 1 << irq;
1399 cpu_interrupt(cs, CPU_INTERRUPT_HARD);
1402 qemu_mutex_unlock_iothread();
1405 void helper_book3s_msgsnd(target_ulong rb)
1407 int pir = rb & DBELL_PROCIDTAG_MASK;
1409 if (!dbell_type_server(rb)) {
1413 book3s_msgsnd_common(pir, PPC_INTERRUPT_HDOORBELL);
1416 #if defined(TARGET_PPC64)
1417 void helper_book3s_msgclrp(CPUPPCState *env, target_ulong rb)
1419 helper_hfscr_facility_check(env, HFSCR_MSGP, "msgclrp", HFSCR_IC_MSGP);
1421 if (!dbell_type_server(rb)) {
1425 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DOORBELL);
1429 * sends a message to other threads that are on the same
1430 * multi-threaded processor
1432 void helper_book3s_msgsndp(CPUPPCState *env, target_ulong rb)
1434 int pir = env->spr_cb[SPR_PIR].default_value;
1436 helper_hfscr_facility_check(env, HFSCR_MSGP, "msgsndp", HFSCR_IC_MSGP);
1438 if (!dbell_type_server(rb)) {
1442 /* TODO: TCG supports only one thread */
1444 book3s_msgsnd_common(pir, PPC_INTERRUPT_DOORBELL);
1446 #endif /* TARGET_PPC64 */
1448 void ppc_cpu_do_unaligned_access(CPUState *cs, vaddr vaddr,
1449 MMUAccessType access_type,
1450 int mmu_idx, uintptr_t retaddr)
1452 CPUPPCState *env = cs->env_ptr;
1455 /* Restore state and reload the insn we executed, for filling in DSISR. */
1456 cpu_restore_state(cs, retaddr, true);
1457 insn = cpu_ldl_code(env, env->nip);
1459 switch (env->mmu_model) {
1460 case POWERPC_MMU_SOFT_4xx:
1461 env->spr[SPR_40x_DEAR] = vaddr;
1463 case POWERPC_MMU_BOOKE:
1464 case POWERPC_MMU_BOOKE206:
1465 env->spr[SPR_BOOKE_DEAR] = vaddr;
1468 env->spr[SPR_DAR] = vaddr;
1472 cs->exception_index = POWERPC_EXCP_ALIGN;
1473 env->error_code = insn & 0x03FF0000;
1476 #endif /* CONFIG_TCG */
1477 #endif /* !CONFIG_USER_ONLY */