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 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"
21 #include "exec/helper-proto.h"
22 #include "exec/exec-all.h"
23 #include "exec/cpu_ldst.h"
25 #include "helper_regs.h"
28 //#define DEBUG_SOFTWARE_TLB
29 //#define DEBUG_EXCEPTIONS
31 #ifdef DEBUG_EXCEPTIONS
32 # define LOG_EXCP(...) qemu_log(__VA_ARGS__)
34 # define LOG_EXCP(...) do { } while (0)
37 /*****************************************************************************/
38 /* PowerPC Hypercall emulation */
40 void (*cpu_ppc_hypercall)(PowerPCCPU *);
42 /*****************************************************************************/
43 /* Exception processing */
44 #if defined(CONFIG_USER_ONLY)
45 void ppc_cpu_do_interrupt(CPUState *cs)
47 PowerPCCPU *cpu = POWERPC_CPU(cs);
48 CPUPPCState *env = &cpu->env;
50 cs->exception_index = POWERPC_EXCP_NONE;
54 static void ppc_hw_interrupt(CPUPPCState *env)
56 CPUState *cs = CPU(ppc_env_get_cpu(env));
58 cs->exception_index = POWERPC_EXCP_NONE;
61 #else /* defined(CONFIG_USER_ONLY) */
62 static inline void dump_syscall(CPUPPCState *env)
64 qemu_log_mask(CPU_LOG_INT, "syscall r0=%016" PRIx64 " r3=%016" PRIx64
65 " r4=%016" PRIx64 " r5=%016" PRIx64 " r6=%016" PRIx64
66 " nip=" TARGET_FMT_lx "\n",
67 ppc_dump_gpr(env, 0), ppc_dump_gpr(env, 3),
68 ppc_dump_gpr(env, 4), ppc_dump_gpr(env, 5),
69 ppc_dump_gpr(env, 6), env->nip);
72 /* Note that this function should be greatly optimized
73 * when called with a constant excp, from ppc_hw_interrupt
75 static inline void powerpc_excp(PowerPCCPU *cpu, int excp_model, int excp)
77 CPUState *cs = CPU(cpu);
78 CPUPPCState *env = &cpu->env;
79 target_ulong msr, new_msr, vector;
80 int srr0, srr1, asrr0, asrr1;
81 int lpes0, lpes1, lev, ail;
84 /* XXX: find a suitable condition to enable the hypervisor mode */
85 lpes0 = (env->spr[SPR_LPCR] >> 1) & 1;
86 lpes1 = (env->spr[SPR_LPCR] >> 2) & 1;
88 /* Those values ensure we won't enter the hypervisor mode */
93 qemu_log_mask(CPU_LOG_INT, "Raise exception at " TARGET_FMT_lx
94 " => %08x (%02x)\n", env->nip, excp, env->error_code);
96 /* new srr1 value excluding must-be-zero bits */
97 if (excp_model == POWERPC_EXCP_BOOKE) {
100 msr = env->msr & ~0x783f0000ULL;
103 /* new interrupt handler msr */
104 new_msr = env->msr & ((target_ulong)1 << MSR_ME);
106 /* target registers */
112 /* Exception targetting modifiers
114 * AIL is initialized here but can be cleared by
115 * selected exceptions
117 #if defined(TARGET_PPC64)
118 if (excp_model == POWERPC_EXCP_POWER7 ||
119 excp_model == POWERPC_EXCP_POWER8) {
120 if (excp_model == POWERPC_EXCP_POWER8) {
121 ail = (env->spr[SPR_LPCR] & LPCR_AIL) >> LPCR_AIL_SHIFT;
126 #endif /* defined(TARGET_PPC64) */
132 case POWERPC_EXCP_NONE:
133 /* Should never happen */
135 case POWERPC_EXCP_CRITICAL: /* Critical input */
136 switch (excp_model) {
137 case POWERPC_EXCP_40x:
141 case POWERPC_EXCP_BOOKE:
142 srr0 = SPR_BOOKE_CSRR0;
143 srr1 = SPR_BOOKE_CSRR1;
145 case POWERPC_EXCP_G2:
151 case POWERPC_EXCP_MCHECK: /* Machine check exception */
153 /* Machine check exception is not enabled.
154 * Enter checkstop state.
156 fprintf(stderr, "Machine check while not allowed. "
157 "Entering checkstop state\n");
158 if (qemu_log_separate()) {
159 qemu_log("Machine check while not allowed. "
160 "Entering checkstop state\n");
163 cs->interrupt_request |= CPU_INTERRUPT_EXITTB;
166 /* XXX: find a suitable condition to enable the hypervisor mode */
167 new_msr |= (target_ulong)MSR_HVB;
171 /* machine check exceptions don't have ME set */
172 new_msr &= ~((target_ulong)1 << MSR_ME);
174 /* XXX: should also have something loaded in DAR / DSISR */
175 switch (excp_model) {
176 case POWERPC_EXCP_40x:
180 case POWERPC_EXCP_BOOKE:
181 /* FIXME: choose one or the other based on CPU type */
182 srr0 = SPR_BOOKE_MCSRR0;
183 srr1 = SPR_BOOKE_MCSRR1;
184 asrr0 = SPR_BOOKE_CSRR0;
185 asrr1 = SPR_BOOKE_CSRR1;
191 case POWERPC_EXCP_DSI: /* Data storage exception */
192 LOG_EXCP("DSI exception: DSISR=" TARGET_FMT_lx" DAR=" TARGET_FMT_lx
193 "\n", env->spr[SPR_DSISR], env->spr[SPR_DAR]);
195 new_msr |= (target_ulong)MSR_HVB;
198 case POWERPC_EXCP_ISI: /* Instruction storage exception */
199 LOG_EXCP("ISI exception: msr=" TARGET_FMT_lx ", nip=" TARGET_FMT_lx
200 "\n", msr, env->nip);
202 new_msr |= (target_ulong)MSR_HVB;
204 msr |= env->error_code;
206 case POWERPC_EXCP_EXTERNAL: /* External input */
210 new_msr |= (target_ulong)MSR_HVB;
212 if (env->mpic_proxy) {
213 /* IACK the IRQ on delivery */
214 env->spr[SPR_BOOKE_EPR] = ldl_phys(cs->as, env->mpic_iack);
217 case POWERPC_EXCP_ALIGN: /* Alignment exception */
219 new_msr |= (target_ulong)MSR_HVB;
221 /* XXX: this is false */
222 /* Get rS/rD and rA from faulting opcode */
223 env->spr[SPR_DSISR] |= (cpu_ldl_code(env, (env->nip - 4))
226 case POWERPC_EXCP_PROGRAM: /* Program exception */
227 switch (env->error_code & ~0xF) {
228 case POWERPC_EXCP_FP:
229 if ((msr_fe0 == 0 && msr_fe1 == 0) || msr_fp == 0) {
230 LOG_EXCP("Ignore floating point exception\n");
231 cs->exception_index = POWERPC_EXCP_NONE;
236 new_msr |= (target_ulong)MSR_HVB;
239 if (msr_fe0 == msr_fe1) {
244 case POWERPC_EXCP_INVAL:
245 LOG_EXCP("Invalid instruction at " TARGET_FMT_lx "\n", env->nip);
247 new_msr |= (target_ulong)MSR_HVB;
250 env->spr[SPR_BOOKE_ESR] = ESR_PIL;
252 case POWERPC_EXCP_PRIV:
254 new_msr |= (target_ulong)MSR_HVB;
257 env->spr[SPR_BOOKE_ESR] = ESR_PPR;
259 case POWERPC_EXCP_TRAP:
261 new_msr |= (target_ulong)MSR_HVB;
264 env->spr[SPR_BOOKE_ESR] = ESR_PTR;
267 /* Should never occur */
268 cpu_abort(cs, "Invalid program exception %d. Aborting\n",
273 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
275 new_msr |= (target_ulong)MSR_HVB;
278 case POWERPC_EXCP_SYSCALL: /* System call exception */
280 lev = env->error_code;
281 if ((lev == 1) && cpu_ppc_hypercall) {
282 cpu_ppc_hypercall(cpu);
285 if (lev == 1 || (lpes0 == 0 && lpes1 == 0)) {
286 new_msr |= (target_ulong)MSR_HVB;
289 case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
291 case POWERPC_EXCP_DECR: /* Decrementer exception */
293 new_msr |= (target_ulong)MSR_HVB;
296 case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
298 LOG_EXCP("FIT exception\n");
300 case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
301 LOG_EXCP("WDT exception\n");
302 switch (excp_model) {
303 case POWERPC_EXCP_BOOKE:
304 srr0 = SPR_BOOKE_CSRR0;
305 srr1 = SPR_BOOKE_CSRR1;
311 case POWERPC_EXCP_DTLB: /* Data TLB error */
313 case POWERPC_EXCP_ITLB: /* Instruction TLB error */
315 case POWERPC_EXCP_DEBUG: /* Debug interrupt */
316 switch (excp_model) {
317 case POWERPC_EXCP_BOOKE:
318 /* FIXME: choose one or the other based on CPU type */
319 srr0 = SPR_BOOKE_DSRR0;
320 srr1 = SPR_BOOKE_DSRR1;
321 asrr0 = SPR_BOOKE_CSRR0;
322 asrr1 = SPR_BOOKE_CSRR1;
328 cpu_abort(cs, "Debug exception is not implemented yet !\n");
330 case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavailable */
331 env->spr[SPR_BOOKE_ESR] = ESR_SPV;
333 case POWERPC_EXCP_EFPDI: /* Embedded floating-point data interrupt */
335 cpu_abort(cs, "Embedded floating point data exception "
336 "is not implemented yet !\n");
337 env->spr[SPR_BOOKE_ESR] = ESR_SPV;
339 case POWERPC_EXCP_EFPRI: /* Embedded floating-point round interrupt */
341 cpu_abort(cs, "Embedded floating point round exception "
342 "is not implemented yet !\n");
343 env->spr[SPR_BOOKE_ESR] = ESR_SPV;
345 case POWERPC_EXCP_EPERFM: /* Embedded performance monitor interrupt */
348 "Performance counter exception is not implemented yet !\n");
350 case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
352 case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
353 srr0 = SPR_BOOKE_CSRR0;
354 srr1 = SPR_BOOKE_CSRR1;
356 case POWERPC_EXCP_RESET: /* System reset exception */
358 /* indicate that we resumed from power save mode */
361 new_msr &= ~((target_ulong)1 << MSR_ME);
365 /* XXX: find a suitable condition to enable the hypervisor mode */
366 new_msr |= (target_ulong)MSR_HVB;
370 case POWERPC_EXCP_DSEG: /* Data segment exception */
372 new_msr |= (target_ulong)MSR_HVB;
375 case POWERPC_EXCP_ISEG: /* Instruction segment exception */
377 new_msr |= (target_ulong)MSR_HVB;
380 case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
383 new_msr |= (target_ulong)MSR_HVB;
384 new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
386 case POWERPC_EXCP_TRACE: /* Trace exception */
388 new_msr |= (target_ulong)MSR_HVB;
391 case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
394 new_msr |= (target_ulong)MSR_HVB;
395 new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
397 case POWERPC_EXCP_HISI: /* Hypervisor instruction storage exception */
400 new_msr |= (target_ulong)MSR_HVB;
401 new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
403 case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
406 new_msr |= (target_ulong)MSR_HVB;
407 new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
409 case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment exception */
412 new_msr |= (target_ulong)MSR_HVB;
413 new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
415 case POWERPC_EXCP_VPU: /* Vector unavailable exception */
417 new_msr |= (target_ulong)MSR_HVB;
420 case POWERPC_EXCP_VSXU: /* VSX unavailable exception */
422 new_msr |= (target_ulong)MSR_HVB;
425 case POWERPC_EXCP_FU: /* Facility unavailable exception */
427 new_msr |= (target_ulong)MSR_HVB;
430 case POWERPC_EXCP_PIT: /* Programmable interval timer interrupt */
431 LOG_EXCP("PIT exception\n");
433 case POWERPC_EXCP_IO: /* IO error exception */
435 cpu_abort(cs, "601 IO error exception is not implemented yet !\n");
437 case POWERPC_EXCP_RUNM: /* Run mode exception */
439 cpu_abort(cs, "601 run mode exception is not implemented yet !\n");
441 case POWERPC_EXCP_EMUL: /* Emulation trap exception */
443 cpu_abort(cs, "602 emulation trap exception "
444 "is not implemented yet !\n");
446 case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
447 if (lpes1 == 0) { /* XXX: check this */
448 new_msr |= (target_ulong)MSR_HVB;
450 switch (excp_model) {
451 case POWERPC_EXCP_602:
452 case POWERPC_EXCP_603:
453 case POWERPC_EXCP_603E:
454 case POWERPC_EXCP_G2:
456 case POWERPC_EXCP_7x5:
458 case POWERPC_EXCP_74xx:
461 cpu_abort(cs, "Invalid instruction TLB miss exception\n");
465 case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
466 if (lpes1 == 0) { /* XXX: check this */
467 new_msr |= (target_ulong)MSR_HVB;
469 switch (excp_model) {
470 case POWERPC_EXCP_602:
471 case POWERPC_EXCP_603:
472 case POWERPC_EXCP_603E:
473 case POWERPC_EXCP_G2:
475 case POWERPC_EXCP_7x5:
477 case POWERPC_EXCP_74xx:
480 cpu_abort(cs, "Invalid data load TLB miss exception\n");
484 case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
485 if (lpes1 == 0) { /* XXX: check this */
486 new_msr |= (target_ulong)MSR_HVB;
488 switch (excp_model) {
489 case POWERPC_EXCP_602:
490 case POWERPC_EXCP_603:
491 case POWERPC_EXCP_603E:
492 case POWERPC_EXCP_G2:
494 /* Swap temporary saved registers with GPRs */
495 if (!(new_msr & ((target_ulong)1 << MSR_TGPR))) {
496 new_msr |= (target_ulong)1 << MSR_TGPR;
497 hreg_swap_gpr_tgpr(env);
500 case POWERPC_EXCP_7x5:
502 #if defined(DEBUG_SOFTWARE_TLB)
503 if (qemu_log_enabled()) {
505 target_ulong *miss, *cmp;
508 if (excp == POWERPC_EXCP_IFTLB) {
511 miss = &env->spr[SPR_IMISS];
512 cmp = &env->spr[SPR_ICMP];
514 if (excp == POWERPC_EXCP_DLTLB) {
520 miss = &env->spr[SPR_DMISS];
521 cmp = &env->spr[SPR_DCMP];
523 qemu_log("6xx %sTLB miss: %cM " TARGET_FMT_lx " %cC "
524 TARGET_FMT_lx " H1 " TARGET_FMT_lx " H2 "
525 TARGET_FMT_lx " %08x\n", es, en, *miss, en, *cmp,
526 env->spr[SPR_HASH1], env->spr[SPR_HASH2],
530 msr |= env->crf[0] << 28;
531 msr |= env->error_code; /* key, D/I, S/L bits */
532 /* Set way using a LRU mechanism */
533 msr |= ((env->last_way + 1) & (env->nb_ways - 1)) << 17;
535 case POWERPC_EXCP_74xx:
537 #if defined(DEBUG_SOFTWARE_TLB)
538 if (qemu_log_enabled()) {
540 target_ulong *miss, *cmp;
543 if (excp == POWERPC_EXCP_IFTLB) {
546 miss = &env->spr[SPR_TLBMISS];
547 cmp = &env->spr[SPR_PTEHI];
549 if (excp == POWERPC_EXCP_DLTLB) {
555 miss = &env->spr[SPR_TLBMISS];
556 cmp = &env->spr[SPR_PTEHI];
558 qemu_log("74xx %sTLB miss: %cM " TARGET_FMT_lx " %cC "
559 TARGET_FMT_lx " %08x\n", es, en, *miss, en, *cmp,
563 msr |= env->error_code; /* key bit */
566 cpu_abort(cs, "Invalid data store TLB miss exception\n");
570 case POWERPC_EXCP_FPA: /* Floating-point assist exception */
572 cpu_abort(cs, "Floating point assist exception "
573 "is not implemented yet !\n");
575 case POWERPC_EXCP_DABR: /* Data address breakpoint */
577 cpu_abort(cs, "DABR exception is not implemented yet !\n");
579 case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
581 cpu_abort(cs, "IABR exception is not implemented yet !\n");
583 case POWERPC_EXCP_SMI: /* System management interrupt */
585 cpu_abort(cs, "SMI exception is not implemented yet !\n");
587 case POWERPC_EXCP_THERM: /* Thermal interrupt */
589 cpu_abort(cs, "Thermal management exception "
590 "is not implemented yet !\n");
592 case POWERPC_EXCP_PERFM: /* Embedded performance monitor interrupt */
594 new_msr |= (target_ulong)MSR_HVB;
598 "Performance counter exception is not implemented yet !\n");
600 case POWERPC_EXCP_VPUA: /* Vector assist exception */
602 cpu_abort(cs, "VPU assist exception is not implemented yet !\n");
604 case POWERPC_EXCP_SOFTP: /* Soft patch exception */
607 "970 soft-patch exception is not implemented yet !\n");
609 case POWERPC_EXCP_MAINT: /* Maintenance exception */
612 "970 maintenance exception is not implemented yet !\n");
614 case POWERPC_EXCP_MEXTBR: /* Maskable external breakpoint */
616 cpu_abort(cs, "Maskable external exception "
617 "is not implemented yet !\n");
619 case POWERPC_EXCP_NMEXTBR: /* Non maskable external breakpoint */
621 cpu_abort(cs, "Non maskable external exception "
622 "is not implemented yet !\n");
626 cpu_abort(cs, "Invalid PowerPC exception %d. Aborting\n", excp);
629 /* save current instruction location */
630 env->spr[srr0] = env->nip - 4;
633 /* save next instruction location */
634 env->spr[srr0] = env->nip;
638 env->spr[srr1] = msr;
639 /* If any alternate SRR register are defined, duplicate saved values */
641 env->spr[asrr0] = env->spr[srr0];
644 env->spr[asrr1] = env->spr[srr1];
647 if (env->spr[SPR_LPCR] & LPCR_AIL) {
648 new_msr |= (1 << MSR_IR) | (1 << MSR_DR);
652 if (excp_model == POWERPC_EXCP_POWER7 ||
653 excp_model == POWERPC_EXCP_POWER8) {
654 if (env->spr[SPR_LPCR] & LPCR_ILE) {
655 new_msr |= (target_ulong)1 << MSR_LE;
657 } else if (msr_ile) {
658 new_msr |= (target_ulong)1 << MSR_LE;
662 new_msr |= (target_ulong)1 << MSR_LE;
666 /* Jump to handler */
667 vector = env->excp_vectors[excp];
668 if (vector == (target_ulong)-1ULL) {
669 cpu_abort(cs, "Raised an exception without defined vector %d\n",
672 vector |= env->excp_prefix;
674 /* AIL only works if there is no HV transition and we are running with
675 * translations enabled
677 if (!((msr >> MSR_IR) & 1) || !((msr >> MSR_DR) & 1)) {
682 new_msr |= (1 << MSR_IR) | (1 << MSR_DR);
687 case AIL_C000_0000_0000_4000:
688 vector |= 0xc000000000004000ull;
691 cpu_abort(cs, "Invalid AIL combination %d\n", ail);
696 #if defined(TARGET_PPC64)
697 if (excp_model == POWERPC_EXCP_BOOKE) {
698 if (env->spr[SPR_BOOKE_EPCR] & EPCR_ICM) {
699 /* Cat.64-bit: EPCR.ICM is copied to MSR.CM */
700 new_msr |= (target_ulong)1 << MSR_CM;
702 vector = (uint32_t)vector;
705 if (!msr_isf && !(env->mmu_model & POWERPC_MMU_64)) {
706 vector = (uint32_t)vector;
708 new_msr |= (target_ulong)1 << MSR_SF;
712 /* XXX: we don't use hreg_store_msr here as already have treated
713 * any special case that could occur. Just store MSR and update hflags
715 env->msr = new_msr & env->msr_mask;
716 hreg_compute_hflags(env);
718 /* Reset exception state */
719 cs->exception_index = POWERPC_EXCP_NONE;
723 void ppc_cpu_do_interrupt(CPUState *cs)
725 PowerPCCPU *cpu = POWERPC_CPU(cs);
726 CPUPPCState *env = &cpu->env;
728 powerpc_excp(cpu, env->excp_model, cs->exception_index);
731 static void ppc_hw_interrupt(CPUPPCState *env)
733 PowerPCCPU *cpu = ppc_env_get_cpu(env);
736 CPUState *cs = CPU(cpu);
738 qemu_log_mask(CPU_LOG_INT, "%s: %p pending %08x req %08x me %d ee %d\n",
739 __func__, env, env->pending_interrupts,
740 cs->interrupt_request, (int)msr_me, (int)msr_ee);
743 if (env->pending_interrupts & (1 << PPC_INTERRUPT_RESET)) {
744 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_RESET);
745 powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_RESET);
748 /* Machine check exception */
749 if (env->pending_interrupts & (1 << PPC_INTERRUPT_MCK)) {
750 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_MCK);
751 powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_MCHECK);
755 /* External debug exception */
756 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DEBUG)) {
757 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DEBUG);
758 powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_DEBUG);
763 /* XXX: find a suitable condition to enable the hypervisor mode */
764 hdice = env->spr[SPR_LPCR] & 1;
768 if ((msr_ee != 0 || msr_hv == 0 || msr_pr != 0) && hdice != 0) {
769 /* Hypervisor decrementer exception */
770 if (env->pending_interrupts & (1 << PPC_INTERRUPT_HDECR)) {
771 powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_HDECR);
776 /* External critical interrupt */
777 if (env->pending_interrupts & (1 << PPC_INTERRUPT_CEXT)) {
778 /* Taking a critical external interrupt does not clear the external
779 * critical interrupt status
782 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_CEXT);
784 powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_CRITICAL);
789 /* Watchdog timer on embedded PowerPC */
790 if (env->pending_interrupts & (1 << PPC_INTERRUPT_WDT)) {
791 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_WDT);
792 powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_WDT);
795 if (env->pending_interrupts & (1 << PPC_INTERRUPT_CDOORBELL)) {
796 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_CDOORBELL);
797 powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_DOORCI);
800 /* Fixed interval timer on embedded PowerPC */
801 if (env->pending_interrupts & (1 << PPC_INTERRUPT_FIT)) {
802 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_FIT);
803 powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_FIT);
806 /* Programmable interval timer on embedded PowerPC */
807 if (env->pending_interrupts & (1 << PPC_INTERRUPT_PIT)) {
808 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PIT);
809 powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_PIT);
812 /* Decrementer exception */
813 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DECR)) {
814 if (ppc_decr_clear_on_delivery(env)) {
815 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DECR);
817 powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_DECR);
820 /* External interrupt */
821 if (env->pending_interrupts & (1 << PPC_INTERRUPT_EXT)) {
822 /* Taking an external interrupt does not clear the external
826 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_EXT);
828 powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_EXTERNAL);
831 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DOORBELL)) {
832 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DOORBELL);
833 powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_DOORI);
836 if (env->pending_interrupts & (1 << PPC_INTERRUPT_PERFM)) {
837 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PERFM);
838 powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_PERFM);
841 /* Thermal interrupt */
842 if (env->pending_interrupts & (1 << PPC_INTERRUPT_THERM)) {
843 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_THERM);
844 powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_THERM);
850 void ppc_cpu_do_system_reset(CPUState *cs)
852 PowerPCCPU *cpu = POWERPC_CPU(cs);
853 CPUPPCState *env = &cpu->env;
855 powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_RESET);
857 #endif /* !CONFIG_USER_ONLY */
859 bool ppc_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
861 PowerPCCPU *cpu = POWERPC_CPU(cs);
862 CPUPPCState *env = &cpu->env;
864 if (interrupt_request & CPU_INTERRUPT_HARD) {
865 ppc_hw_interrupt(env);
866 if (env->pending_interrupts == 0) {
867 cs->interrupt_request &= ~CPU_INTERRUPT_HARD;
874 #if defined(DEBUG_OP)
875 static void cpu_dump_rfi(target_ulong RA, target_ulong msr)
877 qemu_log("Return from exception at " TARGET_FMT_lx " with flags "
878 TARGET_FMT_lx "\n", RA, msr);
882 /*****************************************************************************/
883 /* Exceptions processing helpers */
885 void helper_raise_exception_err(CPUPPCState *env, uint32_t exception,
888 CPUState *cs = CPU(ppc_env_get_cpu(env));
891 printf("Raise exception %3x code : %d\n", exception, error_code);
893 cs->exception_index = exception;
894 env->error_code = error_code;
898 void helper_raise_exception(CPUPPCState *env, uint32_t exception)
900 helper_raise_exception_err(env, exception, 0);
903 #if !defined(CONFIG_USER_ONLY)
904 void helper_store_msr(CPUPPCState *env, target_ulong val)
908 val = hreg_store_msr(env, val, 0);
910 cs = CPU(ppc_env_get_cpu(env));
911 cs->interrupt_request |= CPU_INTERRUPT_EXITTB;
912 helper_raise_exception(env, val);
916 static inline void do_rfi(CPUPPCState *env, target_ulong nip, target_ulong msr,
917 target_ulong msrm, int keep_msrh)
919 CPUState *cs = CPU(ppc_env_get_cpu(env));
921 #if defined(TARGET_PPC64)
922 if (msr_is_64bit(env, msr)) {
924 msr &= (uint64_t)msrm;
927 msr = (uint32_t)(msr & msrm);
929 msr |= env->msr & ~((uint64_t)0xFFFFFFFF);
934 msr &= (uint32_t)msrm;
936 /* XXX: beware: this is false if VLE is supported */
937 env->nip = nip & ~((target_ulong)0x00000003);
938 hreg_store_msr(env, msr, 1);
939 #if defined(DEBUG_OP)
940 cpu_dump_rfi(env->nip, env->msr);
942 /* No need to raise an exception here,
943 * as rfi is always the last insn of a TB
945 cs->interrupt_request |= CPU_INTERRUPT_EXITTB;
948 void helper_rfi(CPUPPCState *env)
950 if (env->excp_model == POWERPC_EXCP_BOOKE) {
951 do_rfi(env, env->spr[SPR_SRR0], env->spr[SPR_SRR1],
952 ~((target_ulong)0), 0);
954 do_rfi(env, env->spr[SPR_SRR0], env->spr[SPR_SRR1],
955 ~((target_ulong)0x783F0000), 1);
959 #if defined(TARGET_PPC64)
960 void helper_rfid(CPUPPCState *env)
962 do_rfi(env, env->spr[SPR_SRR0], env->spr[SPR_SRR1],
963 ~((target_ulong)0x783F0000), 0);
966 void helper_hrfid(CPUPPCState *env)
968 do_rfi(env, env->spr[SPR_HSRR0], env->spr[SPR_HSRR1],
969 ~((target_ulong)0x783F0000), 0);
973 /*****************************************************************************/
974 /* Embedded PowerPC specific helpers */
975 void helper_40x_rfci(CPUPPCState *env)
977 do_rfi(env, env->spr[SPR_40x_SRR2], env->spr[SPR_40x_SRR3],
978 ~((target_ulong)0xFFFF0000), 0);
981 void helper_rfci(CPUPPCState *env)
983 do_rfi(env, env->spr[SPR_BOOKE_CSRR0], env->spr[SPR_BOOKE_CSRR1],
984 ~((target_ulong)0), 0);
987 void helper_rfdi(CPUPPCState *env)
989 /* FIXME: choose CSRR1 or DSRR1 based on cpu type */
990 do_rfi(env, env->spr[SPR_BOOKE_DSRR0], env->spr[SPR_BOOKE_DSRR1],
991 ~((target_ulong)0), 0);
994 void helper_rfmci(CPUPPCState *env)
996 /* FIXME: choose CSRR1 or MCSRR1 based on cpu type */
997 do_rfi(env, env->spr[SPR_BOOKE_MCSRR0], env->spr[SPR_BOOKE_MCSRR1],
998 ~((target_ulong)0), 0);
1002 void helper_tw(CPUPPCState *env, target_ulong arg1, target_ulong arg2,
1005 if (!likely(!(((int32_t)arg1 < (int32_t)arg2 && (flags & 0x10)) ||
1006 ((int32_t)arg1 > (int32_t)arg2 && (flags & 0x08)) ||
1007 ((int32_t)arg1 == (int32_t)arg2 && (flags & 0x04)) ||
1008 ((uint32_t)arg1 < (uint32_t)arg2 && (flags & 0x02)) ||
1009 ((uint32_t)arg1 > (uint32_t)arg2 && (flags & 0x01))))) {
1010 helper_raise_exception_err(env, POWERPC_EXCP_PROGRAM,
1015 #if defined(TARGET_PPC64)
1016 void helper_td(CPUPPCState *env, target_ulong arg1, target_ulong arg2,
1019 if (!likely(!(((int64_t)arg1 < (int64_t)arg2 && (flags & 0x10)) ||
1020 ((int64_t)arg1 > (int64_t)arg2 && (flags & 0x08)) ||
1021 ((int64_t)arg1 == (int64_t)arg2 && (flags & 0x04)) ||
1022 ((uint64_t)arg1 < (uint64_t)arg2 && (flags & 0x02)) ||
1023 ((uint64_t)arg1 > (uint64_t)arg2 && (flags & 0x01))))) {
1024 helper_raise_exception_err(env, POWERPC_EXCP_PROGRAM,
1030 #if !defined(CONFIG_USER_ONLY)
1031 /*****************************************************************************/
1032 /* PowerPC 601 specific instructions (POWER bridge) */
1034 void helper_rfsvc(CPUPPCState *env)
1036 do_rfi(env, env->lr, env->ctr, 0x0000FFFF, 0);
1039 /* Embedded.Processor Control */
1040 static int dbell2irq(target_ulong rb)
1042 int msg = rb & DBELL_TYPE_MASK;
1046 case DBELL_TYPE_DBELL:
1047 irq = PPC_INTERRUPT_DOORBELL;
1049 case DBELL_TYPE_DBELL_CRIT:
1050 irq = PPC_INTERRUPT_CDOORBELL;
1052 case DBELL_TYPE_G_DBELL:
1053 case DBELL_TYPE_G_DBELL_CRIT:
1054 case DBELL_TYPE_G_DBELL_MC:
1063 void helper_msgclr(CPUPPCState *env, target_ulong rb)
1065 int irq = dbell2irq(rb);
1071 env->pending_interrupts &= ~(1 << irq);
1074 void helper_msgsnd(target_ulong rb)
1076 int irq = dbell2irq(rb);
1077 int pir = rb & DBELL_PIRTAG_MASK;
1085 PowerPCCPU *cpu = POWERPC_CPU(cs);
1086 CPUPPCState *cenv = &cpu->env;
1088 if ((rb & DBELL_BRDCAST) || (cenv->spr[SPR_BOOKE_PIR] == pir)) {
1089 cenv->pending_interrupts |= 1 << irq;
1090 cpu_interrupt(cs, CPU_INTERRUPT_HARD);