2 * PowerPC 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, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
33 //#define DEBUG_SOFTWARE_TLB
34 //#define DEBUG_EXCEPTIONS
35 //#define FLUSH_ALL_TLBS
37 /*****************************************************************************/
38 /* PowerPC MMU emulation */
40 #if defined(CONFIG_USER_ONLY)
41 int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
42 int is_user, int is_softmmu)
44 int exception, error_code;
53 error_code |= 0x02000000;
54 env->spr[SPR_DAR] = address;
55 env->spr[SPR_DSISR] = error_code;
57 env->exception_index = exception;
58 env->error_code = error_code;
63 target_phys_addr_t cpu_get_phys_page_debug (CPUState *env, target_ulong addr)
68 /* Common routines used by software and hardware TLBs emulation */
69 static inline int pte_is_valid (target_ulong pte0)
71 return pte0 & 0x80000000 ? 1 : 0;
74 static inline void pte_invalidate (target_ulong *pte0)
79 #define PTE_PTEM_MASK 0x7FFFFFBF
80 #define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B)
82 static int pte_check (mmu_ctx_t *ctx,
83 target_ulong pte0, target_ulong pte1, int h, int rw)
89 /* Check validity and table match */
90 if (pte_is_valid(pte0) && (h == ((pte0 >> 6) & 1))) {
91 /* Check vsid & api */
92 if ((pte0 & PTE_PTEM_MASK) == ctx->ptem) {
93 if (ctx->raddr != (target_ulong)-1) {
94 /* all matches should have equal RPN, WIMG & PP */
95 if ((ctx->raddr & PTE_CHECK_MASK) != (pte1 & PTE_CHECK_MASK)) {
97 fprintf(logfile, "Bad RPN/WIMG/PP\n");
101 /* Compute access rights */
104 if ((pte1 & 0x00000003) != 0x3)
105 access |= PAGE_WRITE;
107 switch (pte1 & 0x00000003) {
116 access = PAGE_READ | PAGE_WRITE;
120 /* Keep the matching PTE informations */
123 if ((rw == 0 && (access & PAGE_READ)) ||
124 (rw == 1 && (access & PAGE_WRITE))) {
126 #if defined (DEBUG_MMU)
128 fprintf(logfile, "PTE access granted !\n");
132 /* Access right violation */
133 #if defined (DEBUG_MMU)
135 fprintf(logfile, "PTE access rejected\n");
145 static int pte_update_flags (mmu_ctx_t *ctx, target_ulong *pte1p,
150 /* Update page flags */
151 if (!(*pte1p & 0x00000100)) {
152 /* Update accessed flag */
153 *pte1p |= 0x00000100;
156 if (!(*pte1p & 0x00000080)) {
157 if (rw == 1 && ret == 0) {
158 /* Update changed flag */
159 *pte1p |= 0x00000080;
162 /* Force page fault for first write access */
163 ctx->prot &= ~PAGE_WRITE;
170 /* Software driven TLB helpers */
171 static int ppc6xx_tlb_getnum (CPUState *env, target_ulong eaddr,
172 int way, int is_code)
176 /* Select TLB num in a way from address */
177 nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1);
179 nr += env->tlb_per_way * way;
180 /* 6xx have separate TLBs for instructions and data */
181 if (is_code && env->id_tlbs == 1)
187 void ppc6xx_tlb_invalidate_all (CPUState *env)
192 #if defined (DEBUG_SOFTWARE_TLB) && 0
194 fprintf(logfile, "Invalidate all TLBs\n");
197 /* Invalidate all defined software TLB */
199 if (env->id_tlbs == 1)
201 for (nr = 0; nr < max; nr++) {
202 tlb = &env->tlb[nr].tlb6;
203 #if !defined(FLUSH_ALL_TLBS)
204 tlb_flush_page(env, tlb->EPN);
206 pte_invalidate(&tlb->pte0);
208 #if defined(FLUSH_ALL_TLBS)
213 static inline void __ppc6xx_tlb_invalidate_virt (CPUState *env,
215 int is_code, int match_epn)
217 #if !defined(FLUSH_ALL_TLBS)
221 /* Invalidate ITLB + DTLB, all ways */
222 for (way = 0; way < env->nb_ways; way++) {
223 nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code);
224 tlb = &env->tlb[nr].tlb6;
225 if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) {
226 #if defined (DEBUG_SOFTWARE_TLB)
228 fprintf(logfile, "TLB invalidate %d/%d " ADDRX "\n",
229 nr, env->nb_tlb, eaddr);
232 pte_invalidate(&tlb->pte0);
233 tlb_flush_page(env, tlb->EPN);
237 /* XXX: PowerPC specification say this is valid as well */
238 ppc6xx_tlb_invalidate_all(env);
242 void ppc6xx_tlb_invalidate_virt (CPUState *env, target_ulong eaddr,
245 __ppc6xx_tlb_invalidate_virt(env, eaddr, is_code, 0);
248 void ppc6xx_tlb_store (CPUState *env, target_ulong EPN, int way, int is_code,
249 target_ulong pte0, target_ulong pte1)
254 nr = ppc6xx_tlb_getnum(env, EPN, way, is_code);
255 tlb = &env->tlb[nr].tlb6;
256 #if defined (DEBUG_SOFTWARE_TLB)
258 fprintf(logfile, "Set TLB %d/%d EPN " ADDRX " PTE0 " ADDRX
259 " PTE1 " ADDRX "\n", nr, env->nb_tlb, EPN, pte0, pte1);
262 /* Invalidate any pending reference in Qemu for this virtual address */
263 __ppc6xx_tlb_invalidate_virt(env, EPN, is_code, 1);
267 /* Store last way for LRU mechanism */
271 static int ppc6xx_tlb_check (CPUState *env, mmu_ctx_t *ctx,
272 target_ulong eaddr, int rw, int access_type)
279 ret = -1; /* No TLB found */
280 for (way = 0; way < env->nb_ways; way++) {
281 nr = ppc6xx_tlb_getnum(env, eaddr, way,
282 access_type == ACCESS_CODE ? 1 : 0);
283 tlb = &env->tlb[nr].tlb6;
284 /* This test "emulates" the PTE index match for hardware TLBs */
285 if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) {
286 #if defined (DEBUG_SOFTWARE_TLB)
288 fprintf(logfile, "TLB %d/%d %s [" ADDRX " " ADDRX
291 pte_is_valid(tlb->pte0) ? "valid" : "inval",
292 tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr);
297 #if defined (DEBUG_SOFTWARE_TLB)
299 fprintf(logfile, "TLB %d/%d %s " ADDRX " <> " ADDRX " " ADDRX
302 pte_is_valid(tlb->pte0) ? "valid" : "inval",
303 tlb->EPN, eaddr, tlb->pte1,
304 rw ? 'S' : 'L', access_type == ACCESS_CODE ? 'I' : 'D');
307 switch (pte_check(ctx, tlb->pte0, tlb->pte1, 0, rw)) {
309 /* TLB inconsistency */
312 /* Access violation */
322 /* XXX: we should go on looping to check all TLBs consistency
323 * but we can speed-up the whole thing as the
324 * result would be undefined if TLBs are not consistent.
333 #if defined (DEBUG_SOFTWARE_TLB)
335 fprintf(logfile, "found TLB at addr 0x%08lx prot=0x%01x ret=%d\n",
336 ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret);
339 /* Update page flags */
340 pte_update_flags(ctx, &env->tlb[best].tlb6.pte1, ret, rw);
346 /* Perform BAT hit & translation */
347 static int get_bat (CPUState *env, mmu_ctx_t *ctx,
348 target_ulong virtual, int rw, int type)
350 target_ulong *BATlt, *BATut, *BATu, *BATl;
351 target_ulong base, BEPIl, BEPIu, bl;
355 #if defined (DEBUG_BATS)
357 fprintf(logfile, "%s: %cBAT v 0x" ADDRX "\n", __func__,
358 type == ACCESS_CODE ? 'I' : 'D', virtual);
363 BATlt = env->IBAT[1];
364 BATut = env->IBAT[0];
367 BATlt = env->DBAT[1];
368 BATut = env->DBAT[0];
371 #if defined (DEBUG_BATS)
373 fprintf(logfile, "%s...: %cBAT v 0x" ADDRX "\n", __func__,
374 type == ACCESS_CODE ? 'I' : 'D', virtual);
377 base = virtual & 0xFFFC0000;
378 for (i = 0; i < 4; i++) {
381 BEPIu = *BATu & 0xF0000000;
382 BEPIl = *BATu & 0x0FFE0000;
383 bl = (*BATu & 0x00001FFC) << 15;
384 #if defined (DEBUG_BATS)
386 fprintf(logfile, "%s: %cBAT%d v 0x" ADDRX " BATu 0x" ADDRX
387 " BATl 0x" ADDRX "\n",
388 __func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual,
392 if ((virtual & 0xF0000000) == BEPIu &&
393 ((virtual & 0x0FFE0000) & ~bl) == BEPIl) {
395 if ((msr_pr == 0 && (*BATu & 0x00000002)) ||
396 (msr_pr == 1 && (*BATu & 0x00000001))) {
397 /* Get physical address */
398 ctx->raddr = (*BATl & 0xF0000000) |
399 ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) |
400 (virtual & 0x0001F000);
401 if (*BATl & 0x00000001)
402 ctx->prot = PAGE_READ;
403 if (*BATl & 0x00000002)
404 ctx->prot = PAGE_WRITE | PAGE_READ;
405 #if defined (DEBUG_BATS)
407 fprintf(logfile, "BAT %d match: r 0x" PADDRX
409 i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-',
410 ctx->prot & PAGE_WRITE ? 'W' : '-');
419 #if defined (DEBUG_BATS)
421 fprintf(logfile, "no BAT match for 0x" ADDRX ":\n", virtual);
422 for (i = 0; i < 4; i++) {
425 BEPIu = *BATu & 0xF0000000;
426 BEPIl = *BATu & 0x0FFE0000;
427 bl = (*BATu & 0x00001FFC) << 15;
428 fprintf(logfile, "%s: %cBAT%d v 0x" ADDRX " BATu 0x" ADDRX
429 " BATl 0x" ADDRX " \n\t"
430 "0x" ADDRX " 0x" ADDRX " 0x" ADDRX "\n",
431 __func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual,
432 *BATu, *BATl, BEPIu, BEPIl, bl);
441 /* PTE table lookup */
442 static int find_pte (mmu_ctx_t *ctx, int h, int rw)
444 target_ulong base, pte0, pte1;
448 ret = -1; /* No entry found */
449 base = ctx->pg_addr[h];
450 for (i = 0; i < 8; i++) {
451 pte0 = ldl_phys(base + (i * 8));
452 pte1 = ldl_phys(base + (i * 8) + 4);
453 #if defined (DEBUG_MMU)
455 fprintf(logfile, "Load pte from 0x" ADDRX " => 0x" ADDRX
456 " 0x" ADDRX " %d %d %d 0x" ADDRX "\n",
457 base + (i * 8), pte0, pte1,
458 pte0 >> 31, h, (pte0 >> 6) & 1, ctx->ptem);
461 switch (pte_check(ctx, pte0, pte1, h, rw)) {
463 /* PTE inconsistency */
466 /* Access violation */
476 /* XXX: we should go on looping to check all PTEs consistency
477 * but if we can speed-up the whole thing as the
478 * result would be undefined if PTEs are not consistent.
487 #if defined (DEBUG_MMU)
489 fprintf(logfile, "found PTE at addr 0x" PADDRX " prot=0x%01x "
491 ctx->raddr, ctx->prot, ret);
494 /* Update page flags */
496 if (pte_update_flags(ctx, &pte1, ret, rw) == 1)
497 stl_phys_notdirty(base + (good * 8) + 4, pte1);
503 static inline target_phys_addr_t get_pgaddr (target_phys_addr_t sdr1,
504 target_phys_addr_t hash,
505 target_phys_addr_t mask)
507 return (sdr1 & 0xFFFF0000) | (hash & mask);
510 /* Perform segment based translation */
511 static int get_segment (CPUState *env, mmu_ctx_t *ctx,
512 target_ulong eaddr, int rw, int type)
514 target_phys_addr_t sdr, hash, mask;
515 target_ulong sr, vsid, pgidx;
518 sr = env->sr[eaddr >> 28];
519 #if defined (DEBUG_MMU)
521 fprintf(logfile, "Check segment v=0x" ADDRX " %d 0x" ADDRX " nip=0x"
522 ADDRX " lr=0x" ADDRX " ir=%d dr=%d pr=%d %d t=%d\n",
523 eaddr, eaddr >> 28, sr, env->nip,
524 env->lr, msr_ir, msr_dr, msr_pr, rw, type);
527 ctx->key = (((sr & 0x20000000) && msr_pr == 1) ||
528 ((sr & 0x40000000) && msr_pr == 0)) ? 1 : 0;
529 if ((sr & 0x80000000) == 0) {
530 #if defined (DEBUG_MMU)
532 fprintf(logfile, "pte segment: key=%d n=0x" ADDRX "\n",
533 ctx->key, sr & 0x10000000);
535 /* Check if instruction fetch is allowed, if needed */
536 if (type != ACCESS_CODE || (sr & 0x10000000) == 0) {
537 /* Page address translation */
538 pgidx = (eaddr >> TARGET_PAGE_BITS) & 0xFFFF;
539 vsid = sr & 0x00FFFFFF;
540 hash = ((vsid ^ pgidx) & 0x0007FFFF) << 6;
541 /* Primary table address */
543 mask = ((sdr & 0x000001FF) << 16) | 0xFFC0;
544 ctx->pg_addr[0] = get_pgaddr(sdr, hash, mask);
545 /* Secondary table address */
546 hash = (~hash) & 0x01FFFFC0;
547 ctx->pg_addr[1] = get_pgaddr(sdr, hash, mask);
548 ctx->ptem = (vsid << 7) | (pgidx >> 10);
549 /* Initialize real address with an invalid value */
550 ctx->raddr = (target_ulong)-1;
551 if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_6xx)) {
552 /* Software TLB search */
553 ret = ppc6xx_tlb_check(env, ctx, eaddr, rw, type);
555 #if defined (DEBUG_MMU)
557 fprintf(logfile, "0 sdr1=0x" PADDRX " vsid=0x%06x "
558 "api=0x%04x hash=0x%07x pg_addr=0x" PADDRX "\n",
559 sdr, (uint32_t)vsid, (uint32_t)pgidx,
560 (uint32_t)hash, ctx->pg_addr[0]);
563 /* Primary table lookup */
564 ret = find_pte(ctx, 0, rw);
566 /* Secondary table lookup */
567 #if defined (DEBUG_MMU)
568 if (eaddr != 0xEFFFFFFF && loglevel != 0) {
570 "1 sdr1=0x" PADDRX " vsid=0x%06x api=0x%04x "
571 "hash=0x%05x pg_addr=0x" PADDRX "\n",
572 sdr, (uint32_t)vsid, (uint32_t)pgidx,
573 (uint32_t)hash, ctx->pg_addr[1]);
576 ret2 = find_pte(ctx, 1, rw);
582 #if defined (DEBUG_MMU)
584 fprintf(logfile, "No access allowed\n");
589 #if defined (DEBUG_MMU)
591 fprintf(logfile, "direct store...\n");
593 /* Direct-store segment : absolutely *BUGGY* for now */
596 /* Integer load/store : only access allowed */
599 /* No code fetch is allowed in direct-store areas */
602 /* Floating point load/store */
605 /* lwarx, ldarx or srwcx. */
608 /* dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi */
609 /* Should make the instruction do no-op.
610 * As it already do no-op, it's quite easy :-)
619 fprintf(logfile, "ERROR: instruction should not need "
620 "address translation\n");
624 if ((rw == 1 || ctx->key != 1) && (rw == 0 || ctx->key != 0)) {
635 void ppc4xx_tlb_invalidate_all (CPUState *env)
640 for (i = 0; i < env->nb_tlb; i++) {
641 tlb = &env->tlb[i].tlbe;
642 if (tlb->prot & PAGE_VALID) {
643 #if 0 // XXX: TLB have variable sizes then we flush all Qemu TLB.
644 end = tlb->EPN + tlb->size;
645 for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE)
646 tlb_flush_page(env, page);
648 tlb->prot &= ~PAGE_VALID;
654 int mmu4xx_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
655 target_ulong address, int rw, int access_type)
658 target_phys_addr_t raddr;
660 int i, ret, zsel, zpr;
664 for (i = 0; i < env->nb_tlb; i++) {
665 tlb = &env->tlb[i].tlbe;
666 /* Check valid flag */
667 if (!(tlb->prot & PAGE_VALID)) {
669 fprintf(logfile, "%s: TLB %d not valid\n", __func__, i);
672 mask = ~(tlb->size - 1);
674 fprintf(logfile, "%s: TLB %d address " ADDRX " PID %d <=> "
675 ADDRX " " ADDRX " %d\n",
676 __func__, i, address, (int)env->spr[SPR_40x_PID],
677 tlb->EPN, mask, (int)tlb->PID);
680 if (tlb->PID != 0 && tlb->PID != env->spr[SPR_40x_PID])
682 /* Check effective address */
683 if ((address & mask) != tlb->EPN)
685 raddr = (tlb->RPN & mask) | (address & ~mask);
686 zsel = (tlb->attr >> 4) & 0xF;
687 zpr = (env->spr[SPR_40x_ZPR] >> (28 - (2 * zsel))) & 0x3;
689 fprintf(logfile, "%s: TLB %d zsel %d zpr %d rw %d attr %08x\n",
690 __func__, i, zsel, zpr, rw, tlb->attr);
692 if (access_type == ACCESS_CODE) {
693 /* Check execute enable bit */
704 /* Check from TLB entry */
705 if (!(tlb->prot & PAGE_EXEC)) {
708 if (tlb->prot & PAGE_WRITE) {
709 ctx->prot = PAGE_READ | PAGE_WRITE;
711 ctx->prot = PAGE_READ;
717 /* All accesses granted */
718 ctx->prot = PAGE_READ | PAGE_WRITE;
733 /* Check from TLB entry */
734 /* Check write protection bit */
735 if (tlb->prot & PAGE_WRITE) {
736 ctx->prot = PAGE_READ | PAGE_WRITE;
739 ctx->prot = PAGE_READ;
747 /* All accesses granted */
748 ctx->prot = PAGE_READ | PAGE_WRITE;
756 fprintf(logfile, "%s: access granted " ADDRX " => " REGX
757 " %d %d\n", __func__, address, ctx->raddr, ctx->prot,
764 fprintf(logfile, "%s: access refused " ADDRX " => " REGX
765 " %d %d\n", __func__, address, raddr, ctx->prot,
772 static int check_physical (CPUState *env, mmu_ctx_t *ctx,
773 target_ulong eaddr, int rw)
778 ctx->prot = PAGE_READ;
780 if (unlikely(msr_pe != 0 && PPC_MMU(env) == PPC_FLAGS_MMU_403)) {
781 /* 403 family add some particular protections,
782 * using PBL/PBU registers for accesses with no translation.
785 /* Check PLB validity */
786 (env->pb[0] < env->pb[1] &&
787 /* and address in plb area */
788 eaddr >= env->pb[0] && eaddr < env->pb[1]) ||
789 (env->pb[2] < env->pb[3] &&
790 eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0;
791 if (in_plb ^ msr_px) {
792 /* Access in protected area */
794 /* Access is not allowed */
798 /* Read-write access is allowed */
799 ctx->prot |= PAGE_WRITE;
802 ctx->prot |= PAGE_WRITE;
808 int get_physical_address (CPUState *env, mmu_ctx_t *ctx, target_ulong eaddr,
809 int rw, int access_type, int check_BATs)
814 fprintf(logfile, "%s\n", __func__);
817 if ((access_type == ACCESS_CODE && msr_ir == 0) ||
818 (access_type != ACCESS_CODE && msr_dr == 0)) {
819 /* No address translation */
820 ret = check_physical(env, ctx, eaddr, rw);
823 switch (PPC_MMU(env)) {
824 case PPC_FLAGS_MMU_32B:
825 case PPC_FLAGS_MMU_SOFT_6xx:
826 /* Try to find a BAT */
828 ret = get_bat(env, ctx, eaddr, rw, access_type);
830 #if defined(TARGET_PPC64)
831 case PPC_FLAGS_MMU_64B:
832 case PPC_FLAGS_MMU_64BRIDGE:
835 /* We didn't match any BAT entry or don't have BATs */
836 ret = get_segment(env, ctx, eaddr, rw, access_type);
839 case PPC_FLAGS_MMU_SOFT_4xx:
840 case PPC_FLAGS_MMU_403:
841 ret = mmu4xx_get_physical_address(env, ctx, eaddr,
844 case PPC_FLAGS_MMU_601:
846 cpu_abort(env, "601 MMU model not implemented\n");
848 case PPC_FLAGS_MMU_BOOKE:
850 cpu_abort(env, "BookeE MMU model not implemented\n");
852 case PPC_FLAGS_MMU_BOOKE_FSL:
854 cpu_abort(env, "BookE FSL MMU model not implemented\n");
857 cpu_abort(env, "Unknown or invalid MMU model\n");
863 fprintf(logfile, "%s address " ADDRX " => %d " PADDRX "\n",
864 __func__, eaddr, ret, ctx->raddr);
871 target_phys_addr_t cpu_get_phys_page_debug (CPUState *env, target_ulong addr)
875 if (unlikely(get_physical_address(env, &ctx, addr, 0, ACCESS_INT, 1) != 0))
878 return ctx.raddr & TARGET_PAGE_MASK;
881 /* Perform address translation */
882 int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
883 int is_user, int is_softmmu)
886 int exception = 0, error_code = 0;
893 access_type = ACCESS_CODE;
896 /* XXX: put correct access by using cpu_restore_state()
898 access_type = ACCESS_INT;
899 // access_type = env->access_type;
901 ret = get_physical_address(env, &ctx, address, rw, access_type, 1);
903 ret = tlb_set_page(env, address & TARGET_PAGE_MASK,
904 ctx.raddr & TARGET_PAGE_MASK, ctx.prot,
905 is_user, is_softmmu);
906 } else if (ret < 0) {
907 #if defined (DEBUG_MMU)
909 cpu_dump_state(env, logfile, fprintf, 0);
911 if (access_type == ACCESS_CODE) {
912 exception = EXCP_ISI;
915 /* No matches in page tables or TLB */
916 switch (PPC_MMU(env)) {
917 case PPC_FLAGS_MMU_SOFT_6xx:
918 exception = EXCP_I_TLBMISS;
919 env->spr[SPR_IMISS] = address;
920 env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem;
921 error_code = 1 << 18;
923 case PPC_FLAGS_MMU_SOFT_4xx:
924 case PPC_FLAGS_MMU_403:
925 exception = EXCP_40x_ITLBMISS;
927 env->spr[SPR_40x_DEAR] = address;
928 env->spr[SPR_40x_ESR] = 0x00000000;
930 case PPC_FLAGS_MMU_32B:
931 error_code = 0x40000000;
933 #if defined(TARGET_PPC64)
934 case PPC_FLAGS_MMU_64B:
936 cpu_abort(env, "MMU model not implemented\n");
938 case PPC_FLAGS_MMU_64BRIDGE:
940 cpu_abort(env, "MMU model not implemented\n");
943 case PPC_FLAGS_MMU_601:
945 cpu_abort(env, "MMU model not implemented\n");
947 case PPC_FLAGS_MMU_BOOKE:
949 cpu_abort(env, "MMU model not implemented\n");
951 case PPC_FLAGS_MMU_BOOKE_FSL:
953 cpu_abort(env, "MMU model not implemented\n");
956 cpu_abort(env, "Unknown or invalid MMU model\n");
961 /* Access rights violation */
962 error_code = 0x08000000;
965 /* No execute protection violation */
966 error_code = 0x10000000;
969 /* Direct store exception */
970 /* No code fetch is allowed in direct-store areas */
971 error_code = 0x10000000;
974 /* No match in segment table */
975 exception = EXCP_ISEG;
980 exception = EXCP_DSI;
983 /* No matches in page tables or TLB */
984 switch (PPC_MMU(env)) {
985 case PPC_FLAGS_MMU_SOFT_6xx:
987 exception = EXCP_DS_TLBMISS;
988 error_code = 1 << 16;
990 exception = EXCP_DL_TLBMISS;
993 env->spr[SPR_DMISS] = address;
994 env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem;
996 error_code |= ctx.key << 19;
997 env->spr[SPR_HASH1] = ctx.pg_addr[0];
998 env->spr[SPR_HASH2] = ctx.pg_addr[1];
999 /* Do not alter DAR nor DSISR */
1001 case PPC_FLAGS_MMU_SOFT_4xx:
1002 case PPC_FLAGS_MMU_403:
1003 exception = EXCP_40x_DTLBMISS;
1005 env->spr[SPR_40x_DEAR] = address;
1007 env->spr[SPR_40x_ESR] = 0x00800000;
1009 env->spr[SPR_40x_ESR] = 0x00000000;
1011 case PPC_FLAGS_MMU_32B:
1012 error_code = 0x40000000;
1014 #if defined(TARGET_PPC64)
1015 case PPC_FLAGS_MMU_64B:
1017 cpu_abort(env, "MMU model not implemented\n");
1019 case PPC_FLAGS_MMU_64BRIDGE:
1021 cpu_abort(env, "MMU model not implemented\n");
1024 case PPC_FLAGS_MMU_601:
1026 cpu_abort(env, "MMU model not implemented\n");
1028 case PPC_FLAGS_MMU_BOOKE:
1030 cpu_abort(env, "MMU model not implemented\n");
1032 case PPC_FLAGS_MMU_BOOKE_FSL:
1034 cpu_abort(env, "MMU model not implemented\n");
1037 cpu_abort(env, "Unknown or invalid MMU model\n");
1042 /* Access rights violation */
1043 error_code = 0x08000000;
1046 /* Direct store exception */
1047 switch (access_type) {
1049 /* Floating point load/store */
1050 exception = EXCP_ALIGN;
1051 error_code = EXCP_ALIGN_FP;
1054 /* lwarx, ldarx or srwcx. */
1055 error_code = 0x04000000;
1058 /* eciwx or ecowx */
1059 error_code = 0x04100000;
1062 printf("DSI: invalid exception (%d)\n", ret);
1063 exception = EXCP_PROGRAM;
1064 error_code = EXCP_INVAL | EXCP_INVAL_INVAL;
1069 /* No match in segment table */
1070 exception = EXCP_DSEG;
1074 if (exception == EXCP_DSI && rw == 1)
1075 error_code |= 0x02000000;
1076 /* Store fault address */
1077 env->spr[SPR_DAR] = address;
1078 env->spr[SPR_DSISR] = error_code;
1082 printf("%s: set exception to %d %02x\n",
1083 __func__, exception, error_code);
1085 env->exception_index = exception;
1086 env->error_code = error_code;
1093 /*****************************************************************************/
1094 /* BATs management */
1095 #if !defined(FLUSH_ALL_TLBS)
1096 static inline void do_invalidate_BAT (CPUPPCState *env,
1097 target_ulong BATu, target_ulong mask)
1099 target_ulong base, end, page;
1101 base = BATu & ~0x0001FFFF;
1102 end = base + mask + 0x00020000;
1103 #if defined (DEBUG_BATS)
1104 if (loglevel != 0) {
1105 fprintf(logfile, "Flush BAT from " ADDRX " to " ADDRX " (" ADDRX ")\n",
1109 for (page = base; page != end; page += TARGET_PAGE_SIZE)
1110 tlb_flush_page(env, page);
1111 #if defined (DEBUG_BATS)
1113 fprintf(logfile, "Flush done\n");
1118 static inline void dump_store_bat (CPUPPCState *env, char ID, int ul, int nr,
1121 #if defined (DEBUG_BATS)
1122 if (loglevel != 0) {
1123 fprintf(logfile, "Set %cBAT%d%c to 0x" ADDRX " (0x" ADDRX ")\n",
1124 ID, nr, ul == 0 ? 'u' : 'l', value, env->nip);
1129 target_ulong do_load_ibatu (CPUPPCState *env, int nr)
1131 return env->IBAT[0][nr];
1134 target_ulong do_load_ibatl (CPUPPCState *env, int nr)
1136 return env->IBAT[1][nr];
1139 void do_store_ibatu (CPUPPCState *env, int nr, target_ulong value)
1143 dump_store_bat(env, 'I', 0, nr, value);
1144 if (env->IBAT[0][nr] != value) {
1145 mask = (value << 15) & 0x0FFE0000UL;
1146 #if !defined(FLUSH_ALL_TLBS)
1147 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1149 /* When storing valid upper BAT, mask BEPI and BRPN
1150 * and invalidate all TLBs covered by this BAT
1152 mask = (value << 15) & 0x0FFE0000UL;
1153 env->IBAT[0][nr] = (value & 0x00001FFFUL) |
1154 (value & ~0x0001FFFFUL & ~mask);
1155 env->IBAT[1][nr] = (env->IBAT[1][nr] & 0x0000007B) |
1156 (env->IBAT[1][nr] & ~0x0001FFFF & ~mask);
1157 #if !defined(FLUSH_ALL_TLBS)
1158 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1165 void do_store_ibatl (CPUPPCState *env, int nr, target_ulong value)
1167 dump_store_bat(env, 'I', 1, nr, value);
1168 env->IBAT[1][nr] = value;
1171 target_ulong do_load_dbatu (CPUPPCState *env, int nr)
1173 return env->DBAT[0][nr];
1176 target_ulong do_load_dbatl (CPUPPCState *env, int nr)
1178 return env->DBAT[1][nr];
1181 void do_store_dbatu (CPUPPCState *env, int nr, target_ulong value)
1185 dump_store_bat(env, 'D', 0, nr, value);
1186 if (env->DBAT[0][nr] != value) {
1187 /* When storing valid upper BAT, mask BEPI and BRPN
1188 * and invalidate all TLBs covered by this BAT
1190 mask = (value << 15) & 0x0FFE0000UL;
1191 #if !defined(FLUSH_ALL_TLBS)
1192 do_invalidate_BAT(env, env->DBAT[0][nr], mask);
1194 mask = (value << 15) & 0x0FFE0000UL;
1195 env->DBAT[0][nr] = (value & 0x00001FFFUL) |
1196 (value & ~0x0001FFFFUL & ~mask);
1197 env->DBAT[1][nr] = (env->DBAT[1][nr] & 0x0000007B) |
1198 (env->DBAT[1][nr] & ~0x0001FFFF & ~mask);
1199 #if !defined(FLUSH_ALL_TLBS)
1200 do_invalidate_BAT(env, env->DBAT[0][nr], mask);
1207 void do_store_dbatl (CPUPPCState *env, int nr, target_ulong value)
1209 dump_store_bat(env, 'D', 1, nr, value);
1210 env->DBAT[1][nr] = value;
1214 /*****************************************************************************/
1215 /* TLB management */
1216 void ppc_tlb_invalidate_all (CPUPPCState *env)
1218 if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_6xx)) {
1219 ppc6xx_tlb_invalidate_all(env);
1220 } else if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_4xx)) {
1221 ppc4xx_tlb_invalidate_all(env);
1227 /*****************************************************************************/
1228 /* Special registers manipulation */
1229 #if defined(TARGET_PPC64)
1230 target_ulong ppc_load_asr (CPUPPCState *env)
1235 void ppc_store_asr (CPUPPCState *env, target_ulong value)
1237 if (env->asr != value) {
1244 target_ulong do_load_sdr1 (CPUPPCState *env)
1249 void do_store_sdr1 (CPUPPCState *env, target_ulong value)
1251 #if defined (DEBUG_MMU)
1252 if (loglevel != 0) {
1253 fprintf(logfile, "%s: 0x" ADDRX "\n", __func__, value);
1256 if (env->sdr1 != value) {
1262 target_ulong do_load_sr (CPUPPCState *env, int srnum)
1264 return env->sr[srnum];
1267 void do_store_sr (CPUPPCState *env, int srnum, target_ulong value)
1269 #if defined (DEBUG_MMU)
1270 if (loglevel != 0) {
1271 fprintf(logfile, "%s: reg=%d 0x" ADDRX " " ADDRX "\n",
1272 __func__, srnum, value, env->sr[srnum]);
1275 if (env->sr[srnum] != value) {
1276 env->sr[srnum] = value;
1277 #if !defined(FLUSH_ALL_TLBS) && 0
1279 target_ulong page, end;
1280 /* Invalidate 256 MB of virtual memory */
1281 page = (16 << 20) * srnum;
1282 end = page + (16 << 20);
1283 for (; page != end; page += TARGET_PAGE_SIZE)
1284 tlb_flush_page(env, page);
1291 #endif /* !defined (CONFIG_USER_ONLY) */
1293 uint32_t ppc_load_xer (CPUPPCState *env)
1295 return (xer_so << XER_SO) |
1296 (xer_ov << XER_OV) |
1297 (xer_ca << XER_CA) |
1298 (xer_bc << XER_BC) |
1299 (xer_cmp << XER_CMP);
1302 void ppc_store_xer (CPUPPCState *env, uint32_t value)
1304 xer_so = (value >> XER_SO) & 0x01;
1305 xer_ov = (value >> XER_OV) & 0x01;
1306 xer_ca = (value >> XER_CA) & 0x01;
1307 xer_cmp = (value >> XER_CMP) & 0xFF;
1308 xer_bc = (value >> XER_BC) & 0x7F;
1311 /* Swap temporary saved registers with GPRs */
1312 static inline void swap_gpr_tgpr (CPUPPCState *env)
1317 env->gpr[0] = env->tgpr[0];
1320 env->gpr[1] = env->tgpr[1];
1323 env->gpr[2] = env->tgpr[2];
1326 env->gpr[3] = env->tgpr[3];
1330 /* GDBstub can read and write MSR... */
1331 target_ulong do_load_msr (CPUPPCState *env)
1334 #if defined (TARGET_PPC64)
1335 ((target_ulong)msr_sf << MSR_SF) |
1336 ((target_ulong)msr_isf << MSR_ISF) |
1337 ((target_ulong)msr_hv << MSR_HV) |
1339 ((target_ulong)msr_ucle << MSR_UCLE) |
1340 ((target_ulong)msr_vr << MSR_VR) | /* VR / SPE */
1341 ((target_ulong)msr_ap << MSR_AP) |
1342 ((target_ulong)msr_sa << MSR_SA) |
1343 ((target_ulong)msr_key << MSR_KEY) |
1344 ((target_ulong)msr_pow << MSR_POW) | /* POW / WE */
1345 ((target_ulong)msr_tlb << MSR_TLB) | /* TLB / TGPE / CE */
1346 ((target_ulong)msr_ile << MSR_ILE) |
1347 ((target_ulong)msr_ee << MSR_EE) |
1348 ((target_ulong)msr_pr << MSR_PR) |
1349 ((target_ulong)msr_fp << MSR_FP) |
1350 ((target_ulong)msr_me << MSR_ME) |
1351 ((target_ulong)msr_fe0 << MSR_FE0) |
1352 ((target_ulong)msr_se << MSR_SE) | /* SE / DWE / UBLE */
1353 ((target_ulong)msr_be << MSR_BE) | /* BE / DE */
1354 ((target_ulong)msr_fe1 << MSR_FE1) |
1355 ((target_ulong)msr_al << MSR_AL) |
1356 ((target_ulong)msr_ip << MSR_IP) |
1357 ((target_ulong)msr_ir << MSR_IR) | /* IR / IS */
1358 ((target_ulong)msr_dr << MSR_DR) | /* DR / DS */
1359 ((target_ulong)msr_pe << MSR_PE) | /* PE / EP */
1360 ((target_ulong)msr_px << MSR_PX) | /* PX / PMM */
1361 ((target_ulong)msr_ri << MSR_RI) |
1362 ((target_ulong)msr_le << MSR_LE);
1365 void do_store_msr (CPUPPCState *env, target_ulong value)
1369 value &= env->msr_mask;
1370 if (((value >> MSR_IR) & 1) != msr_ir ||
1371 ((value >> MSR_DR) & 1) != msr_dr) {
1372 /* Flush all tlb when changing translation mode */
1374 env->interrupt_request |= CPU_INTERRUPT_EXITTB;
1377 if (loglevel != 0) {
1378 fprintf(logfile, "%s: T0 %08lx\n", __func__, value);
1381 switch (PPC_EXCP(env)) {
1382 case PPC_FLAGS_EXCP_602:
1383 case PPC_FLAGS_EXCP_603:
1384 if (((value >> MSR_TGPR) & 1) != msr_tgpr) {
1385 /* Swap temporary saved registers with GPRs */
1392 #if defined (TARGET_PPC64)
1393 msr_sf = (value >> MSR_SF) & 1;
1394 msr_isf = (value >> MSR_ISF) & 1;
1395 msr_hv = (value >> MSR_HV) & 1;
1397 msr_ucle = (value >> MSR_UCLE) & 1;
1398 msr_vr = (value >> MSR_VR) & 1; /* VR / SPE */
1399 msr_ap = (value >> MSR_AP) & 1;
1400 msr_sa = (value >> MSR_SA) & 1;
1401 msr_key = (value >> MSR_KEY) & 1;
1402 msr_pow = (value >> MSR_POW) & 1; /* POW / WE */
1403 msr_tlb = (value >> MSR_TLB) & 1; /* TLB / TGPR / CE */
1404 msr_ile = (value >> MSR_ILE) & 1;
1405 msr_ee = (value >> MSR_EE) & 1;
1406 msr_pr = (value >> MSR_PR) & 1;
1407 msr_fp = (value >> MSR_FP) & 1;
1408 msr_me = (value >> MSR_ME) & 1;
1409 msr_fe0 = (value >> MSR_FE0) & 1;
1410 msr_se = (value >> MSR_SE) & 1; /* SE / DWE / UBLE */
1411 msr_be = (value >> MSR_BE) & 1; /* BE / DE */
1412 msr_fe1 = (value >> MSR_FE1) & 1;
1413 msr_al = (value >> MSR_AL) & 1;
1414 msr_ip = (value >> MSR_IP) & 1;
1415 msr_ir = (value >> MSR_IR) & 1; /* IR / IS */
1416 msr_dr = (value >> MSR_DR) & 1; /* DR / DS */
1417 msr_pe = (value >> MSR_PE) & 1; /* PE / EP */
1418 msr_px = (value >> MSR_PX) & 1; /* PX / PMM */
1419 msr_ri = (value >> MSR_RI) & 1;
1420 msr_le = (value >> MSR_LE) & 1;
1421 do_compute_hflags(env);
1424 switch (PPC_EXCP(env)) {
1425 case PPC_FLAGS_EXCP_603:
1426 /* Don't handle SLEEP mode: we should disable all clocks...
1427 * No dynamic power-management.
1429 if (msr_pow == 1 && (env->spr[SPR_HID0] & 0x00C00000) != 0)
1432 case PPC_FLAGS_EXCP_604:
1436 case PPC_FLAGS_EXCP_7x0:
1437 if (msr_pow == 1 && (env->spr[SPR_HID0] & 0x00E00000) != 0)
1444 /* power save: exit cpu loop */
1446 env->exception_index = EXCP_HLT;
1451 #if defined(TARGET_PPC64)
1452 void ppc_store_msr_32 (CPUPPCState *env, uint32_t value)
1455 (do_load_msr(env) & ~0xFFFFFFFFULL) | (value & 0xFFFFFFFF));
1459 void do_compute_hflags (CPUPPCState *env)
1461 /* Compute current hflags */
1462 env->hflags = (msr_cm << MSR_CM) | (msr_vr << MSR_VR) |
1463 (msr_ap << MSR_AP) | (msr_sa << MSR_SA) | (msr_pr << MSR_PR) |
1464 (msr_fp << MSR_FP) | (msr_fe0 << MSR_FE0) | (msr_se << MSR_SE) |
1465 (msr_be << MSR_BE) | (msr_fe1 << MSR_FE1) | (msr_le << MSR_LE);
1466 #if defined (TARGET_PPC64)
1467 /* No care here: PowerPC 64 MSR_SF means the same as MSR_CM for BookE */
1468 env->hflags |= (msr_sf << (MSR_SF - 32)) | (msr_hv << (MSR_HV - 32));
1472 /*****************************************************************************/
1473 /* Exception processing */
1474 #if defined (CONFIG_USER_ONLY)
1475 void do_interrupt (CPUState *env)
1477 env->exception_index = -1;
1480 void ppc_hw_interrupt (CPUState *env)
1482 env->exception_index = -1;
1484 #else /* defined (CONFIG_USER_ONLY) */
1485 static void dump_syscall(CPUState *env)
1487 fprintf(logfile, "syscall r0=0x" REGX " r3=0x" REGX " r4=0x" REGX
1488 " r5=0x" REGX " r6=0x" REGX " nip=0x" ADDRX "\n",
1489 env->gpr[0], env->gpr[3], env->gpr[4],
1490 env->gpr[5], env->gpr[6], env->nip);
1493 void do_interrupt (CPUState *env)
1495 target_ulong msr, *srr_0, *srr_1, *asrr_0, *asrr_1;
1498 excp = env->exception_index;
1499 msr = do_load_msr(env);
1500 /* The default is to use SRR0 & SRR1 to save the exception context */
1501 srr_0 = &env->spr[SPR_SRR0];
1502 srr_1 = &env->spr[SPR_SRR1];
1505 #if defined (DEBUG_EXCEPTIONS)
1506 if ((excp == EXCP_PROGRAM || excp == EXCP_DSI) && msr_pr == 1) {
1507 if (loglevel != 0) {
1509 "Raise exception at 0x" ADDRX " => 0x%08x (%02x)\n",
1510 env->nip, excp, env->error_code);
1511 cpu_dump_state(env, logfile, fprintf, 0);
1515 if (loglevel & CPU_LOG_INT) {
1516 fprintf(logfile, "Raise exception at 0x" ADDRX " => 0x%08x (%02x)\n",
1517 env->nip, excp, env->error_code);
1521 /* Generate informations in save/restore registers */
1523 /* Generic PowerPC exceptions */
1524 case EXCP_RESET: /* 0x0100 */
1525 switch (PPC_EXCP(env)) {
1526 case PPC_FLAGS_EXCP_40x:
1527 srr_0 = &env->spr[SPR_40x_SRR2];
1528 srr_1 = &env->spr[SPR_40x_SRR3];
1530 case PPC_FLAGS_EXCP_BOOKE:
1532 srr_0 = &env->spr[SPR_BOOKE_CSRR0];
1533 srr_1 = &env->spr[SPR_BOOKE_CSRR1];
1542 case EXCP_MACHINE_CHECK: /* 0x0200 */
1543 switch (PPC_EXCP(env)) {
1544 case PPC_FLAGS_EXCP_40x:
1545 srr_0 = &env->spr[SPR_40x_SRR2];
1546 srr_1 = &env->spr[SPR_40x_SRR3];
1548 case PPC_FLAGS_EXCP_BOOKE:
1550 srr_0 = &env->spr[SPR_BOOKE_MCSRR0];
1551 srr_1 = &env->spr[SPR_BOOKE_MCSRR1];
1552 asrr_0 = &env->spr[SPR_BOOKE_CSRR0];
1553 asrr_1 = &env->spr[SPR_BOOKE_CSRR1];
1561 case EXCP_DSI: /* 0x0300 */
1562 /* Store exception cause */
1563 /* data location address has been stored
1564 * when the fault has been detected
1568 #if defined (DEBUG_EXCEPTIONS)
1569 if (loglevel != 0) {
1570 fprintf(logfile, "DSI exception: DSISR=0x" ADDRX" DAR=0x" ADDRX
1571 "\n", env->spr[SPR_DSISR], env->spr[SPR_DAR]);
1575 case EXCP_ISI: /* 0x0400 */
1576 /* Store exception cause */
1579 msr |= env->error_code;
1580 #if defined (DEBUG_EXCEPTIONS)
1581 if (loglevel != 0) {
1582 fprintf(logfile, "ISI exception: msr=0x" ADDRX ", nip=0x" ADDRX
1583 "\n", msr, env->nip);
1587 case EXCP_EXTERNAL: /* 0x0500 */
1590 case EXCP_ALIGN: /* 0x0600 */
1591 if (likely(PPC_EXCP(env) != PPC_FLAGS_EXCP_601)) {
1592 /* Store exception cause */
1594 /* Get rS/rD and rA from faulting opcode */
1595 env->spr[SPR_DSISR] |=
1596 (ldl_code((env->nip - 4)) & 0x03FF0000) >> 16;
1597 /* data location address has been stored
1598 * when the fault has been detected
1601 /* IO error exception on PowerPC 601 */
1604 "601 IO error exception is not implemented yet !\n");
1607 case EXCP_PROGRAM: /* 0x0700 */
1610 switch (env->error_code & ~0xF) {
1612 if (msr_fe0 == 0 && msr_fe1 == 0) {
1613 #if defined (DEBUG_EXCEPTIONS)
1614 if (loglevel != 0) {
1615 fprintf(logfile, "Ignore floating point exception\n");
1622 env->fpscr[7] |= 0x8;
1623 /* Finally, update FEX */
1624 if ((((env->fpscr[7] & 0x3) << 3) | (env->fpscr[6] >> 1)) &
1625 ((env->fpscr[1] << 1) | (env->fpscr[0] >> 3)))
1626 env->fpscr[7] |= 0x4;
1629 #if defined (DEBUG_EXCEPTIONS)
1630 if (loglevel != 0) {
1631 fprintf(logfile, "Invalid instruction at 0x" ADDRX "\n",
1645 /* Should never occur */
1650 case EXCP_NO_FP: /* 0x0800 */
1656 case EXCP_SYSCALL: /* 0x0C00 */
1658 /* NOTE: this is a temporary hack to support graphics OSI
1659 calls from the MOL driver */
1660 if (env->gpr[3] == 0x113724fa && env->gpr[4] == 0x77810f9b &&
1662 if (env->osi_call(env) != 0)
1665 if (loglevel & CPU_LOG_INT) {
1669 case EXCP_TRACE: /* 0x0D00 */
1671 case EXCP_PERF: /* 0x0F00 */
1674 "Performance counter exception is not implemented yet !\n");
1676 /* 32 bits PowerPC specific exceptions */
1677 case EXCP_FP_ASSIST: /* 0x0E00 */
1679 cpu_abort(env, "Floating point assist exception "
1680 "is not implemented yet !\n");
1682 /* 64 bits PowerPC exceptions */
1683 case EXCP_DSEG: /* 0x0380 */
1685 cpu_abort(env, "Data segment exception is not implemented yet !\n");
1687 case EXCP_ISEG: /* 0x0480 */
1690 "Instruction segment exception is not implemented yet !\n");
1692 case EXCP_HDECR: /* 0x0980 */
1694 cpu_abort(env, "Hypervisor decrementer exception is not implemented "
1697 /* Implementation specific exceptions */
1699 if (likely(env->spr[SPR_PVR] == CPU_PPC_G2 ||
1700 env->spr[SPR_PVR] == CPU_PPC_G2LE)) {
1701 /* Critical interrupt on G2 */
1703 cpu_abort(env, "G2 critical interrupt is not implemented yet !\n");
1706 cpu_abort(env, "Invalid exception 0x0A00 !\n");
1711 switch (PPC_EXCP(env)) {
1712 case PPC_FLAGS_EXCP_40x:
1713 /* APU unavailable on 405 */
1716 "APU unavailable exception is not implemented yet !\n");
1718 case PPC_FLAGS_EXCP_74xx:
1719 /* Altivec unavailable */
1721 cpu_abort(env, "Altivec unavailable exception "
1722 "is not implemented yet !\n");
1725 cpu_abort(env, "Invalid exception 0x0F20 !\n");
1731 switch (PPC_EXCP(env)) {
1732 case PPC_FLAGS_EXCP_40x:
1735 #if defined (DEBUG_EXCEPTIONS)
1737 fprintf(logfile, "PIT exception\n");
1740 case PPC_FLAGS_EXCP_602:
1741 case PPC_FLAGS_EXCP_603:
1742 /* ITLBMISS on 602/603 */
1744 case PPC_FLAGS_EXCP_7x5:
1745 /* ITLBMISS on 745/755 */
1748 cpu_abort(env, "Invalid exception 0x1000 !\n");
1754 switch (PPC_EXCP(env)) {
1755 case PPC_FLAGS_EXCP_40x:
1758 #if defined (DEBUG_EXCEPTIONS)
1760 fprintf(logfile, "FIT exception\n");
1764 cpu_abort(env, "Invalid exception 0x1010 !\n");
1770 switch (PPC_EXCP(env)) {
1771 case PPC_FLAGS_EXCP_40x:
1772 /* Watchdog on 4xx */
1774 #if defined (DEBUG_EXCEPTIONS)
1776 fprintf(logfile, "WDT exception\n");
1779 case PPC_FLAGS_EXCP_BOOKE:
1780 srr_0 = &env->spr[SPR_BOOKE_CSRR0];
1781 srr_1 = &env->spr[SPR_BOOKE_CSRR1];
1784 cpu_abort(env, "Invalid exception 0x1020 !\n");
1790 switch (PPC_EXCP(env)) {
1791 case PPC_FLAGS_EXCP_40x:
1792 /* DTLBMISS on 4xx */
1795 case PPC_FLAGS_EXCP_602:
1796 case PPC_FLAGS_EXCP_603:
1797 /* DLTLBMISS on 602/603 */
1799 case PPC_FLAGS_EXCP_7x5:
1800 /* DLTLBMISS on 745/755 */
1803 cpu_abort(env, "Invalid exception 0x1100 !\n");
1809 switch (PPC_EXCP(env)) {
1810 case PPC_FLAGS_EXCP_40x:
1811 /* ITLBMISS on 4xx */
1814 case PPC_FLAGS_EXCP_602:
1815 case PPC_FLAGS_EXCP_603:
1816 /* DSTLBMISS on 602/603 */
1818 /* Swap temporary saved registers with GPRs */
1821 #if defined (DEBUG_SOFTWARE_TLB)
1822 if (loglevel != 0) {
1823 const unsigned char *es;
1824 target_ulong *miss, *cmp;
1826 if (excp == 0x1000) {
1829 miss = &env->spr[SPR_IMISS];
1830 cmp = &env->spr[SPR_ICMP];
1837 miss = &env->spr[SPR_DMISS];
1838 cmp = &env->spr[SPR_DCMP];
1840 fprintf(logfile, "6xx %sTLB miss: %cM " ADDRX " %cC " ADDRX
1841 " H1 " ADDRX " H2 " ADDRX " %08x\n",
1842 es, en, *miss, en, *cmp,
1843 env->spr[SPR_HASH1], env->spr[SPR_HASH2],
1848 case PPC_FLAGS_EXCP_7x5:
1849 /* DSTLBMISS on 745/755 */
1852 msr |= env->crf[0] << 28;
1853 msr |= env->error_code; /* key, D/I, S/L bits */
1854 /* Set way using a LRU mechanism */
1855 msr |= ((env->last_way + 1) & (env->nb_ways - 1)) << 17;
1858 cpu_abort(env, "Invalid exception 0x1200 !\n");
1863 switch (PPC_EXCP(env)) {
1864 case PPC_FLAGS_EXCP_601:
1865 case PPC_FLAGS_EXCP_602:
1866 case PPC_FLAGS_EXCP_603:
1867 case PPC_FLAGS_EXCP_604:
1868 case PPC_FLAGS_EXCP_7x0:
1869 case PPC_FLAGS_EXCP_7x5:
1870 /* IABR on 6xx/7xx */
1872 cpu_abort(env, "IABR exception is not implemented yet !\n");
1875 cpu_abort(env, "Invalid exception 0x1300 !\n");
1880 switch (PPC_EXCP(env)) {
1881 case PPC_FLAGS_EXCP_601:
1882 case PPC_FLAGS_EXCP_602:
1883 case PPC_FLAGS_EXCP_603:
1884 case PPC_FLAGS_EXCP_604:
1885 case PPC_FLAGS_EXCP_7x0:
1886 case PPC_FLAGS_EXCP_7x5:
1887 /* SMI on 6xx/7xx */
1889 cpu_abort(env, "SMI exception is not implemented yet !\n");
1892 cpu_abort(env, "Invalid exception 0x1400 !\n");
1897 switch (PPC_EXCP(env)) {
1898 case PPC_FLAGS_EXCP_602:
1899 /* Watchdog on 602 */
1902 "602 watchdog exception is not implemented yet !\n");
1904 case PPC_FLAGS_EXCP_970:
1905 /* Soft patch exception on 970 */
1908 "970 soft-patch exception is not implemented yet !\n");
1910 case PPC_FLAGS_EXCP_74xx:
1911 /* VPU assist on 74xx */
1913 cpu_abort(env, "VPU assist exception is not implemented yet !\n");
1916 cpu_abort(env, "Invalid exception 0x1500 !\n");
1921 switch (PPC_EXCP(env)) {
1922 case PPC_FLAGS_EXCP_602:
1923 /* Emulation trap on 602 */
1925 cpu_abort(env, "602 emulation trap exception "
1926 "is not implemented yet !\n");
1928 case PPC_FLAGS_EXCP_970:
1929 /* Maintenance exception on 970 */
1932 "970 maintenance exception is not implemented yet !\n");
1935 cpu_abort(env, "Invalid exception 0x1600 !\n");
1940 switch (PPC_EXCP(env)) {
1941 case PPC_FLAGS_EXCP_7x0:
1942 case PPC_FLAGS_EXCP_7x5:
1943 /* Thermal management interrupt on G3 */
1945 cpu_abort(env, "G3 thermal management exception "
1946 "is not implemented yet !\n");
1948 case PPC_FLAGS_EXCP_970:
1949 /* VPU assist on 970 */
1952 "970 VPU assist exception is not implemented yet !\n");
1955 cpu_abort(env, "Invalid exception 0x1700 !\n");
1960 switch (PPC_EXCP(env)) {
1961 case PPC_FLAGS_EXCP_970:
1962 /* Thermal exception on 970 */
1964 cpu_abort(env, "970 thermal management exception "
1965 "is not implemented yet !\n");
1968 cpu_abort(env, "Invalid exception 0x1800 !\n");
1973 switch (PPC_EXCP(env)) {
1974 case PPC_FLAGS_EXCP_40x:
1977 cpu_abort(env, "40x debug exception is not implemented yet !\n");
1979 case PPC_FLAGS_EXCP_601:
1980 /* Run mode exception on 601 */
1983 "601 run mode exception is not implemented yet !\n");
1985 case PPC_FLAGS_EXCP_BOOKE:
1986 srr_0 = &env->spr[SPR_BOOKE_CSRR0];
1987 srr_1 = &env->spr[SPR_BOOKE_CSRR1];
1990 cpu_abort(env, "Invalid exception 0x1800 !\n");
1994 /* Other exceptions */
1995 /* Qemu internal exceptions:
1996 * we should never come here with those values: abort execution
1999 cpu_abort(env, "Invalid exception: code %d (%04x)\n", excp, excp);
2002 /* save current instruction location */
2003 *srr_0 = env->nip - 4;
2006 /* save next instruction location */
2016 /* If we disactivated any translation, flush TLBs */
2017 if (msr_ir || msr_dr) {
2020 /* reload MSR with correct bits */
2032 if (PPC_EXCP(env) == PPC_FLAGS_EXCP_BOOKE) {
2034 if (idx == -1 || (idx >= 16 && idx < 32)) {
2035 cpu_abort(env, "Invalid exception index for excp %d %08x idx %d\n",
2038 #if defined(TARGET_PPC64)
2040 env->nip = (uint64_t)env->spr[SPR_BOOKE_IVPR];
2043 env->nip = (uint32_t)env->spr[SPR_BOOKE_IVPR];
2045 env->nip |= env->spr[SPR_BOOKE_IVOR0 + idx];
2047 env->nip |= env->spr[SPR_BOOKE_IVOR32 + idx - 32];
2052 do_compute_hflags(env);
2053 /* Jump to handler */
2054 env->exception_index = EXCP_NONE;
2057 void ppc_hw_interrupt (CPUPPCState *env)
2062 if (loglevel & CPU_LOG_INT) {
2063 fprintf(logfile, "%s: %p pending %08x req %08x me %d ee %d\n",
2064 __func__, env, env->pending_interrupts,
2065 env->interrupt_request, msr_me, msr_ee);
2069 if (env->pending_interrupts & (1 << PPC_INTERRUPT_RESET)) {
2070 /* External reset / critical input */
2071 /* XXX: critical input should be handled another way.
2072 * This code is not correct !
2074 env->exception_index = EXCP_RESET;
2075 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_RESET);
2078 if (raised == 0 && msr_me != 0) {
2079 /* Machine check exception */
2080 if (env->pending_interrupts & (1 << PPC_INTERRUPT_MCK)) {
2081 env->exception_index = EXCP_MACHINE_CHECK;
2082 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_MCK);
2086 if (raised == 0 && msr_ee != 0) {
2087 #if defined(TARGET_PPC64H) /* PowerPC 64 with hypervisor mode support */
2088 /* Hypervisor decrementer exception */
2089 if (env->pending_interrupts & (1 << PPC_INTERRUPT_HDECR)) {
2090 env->exception_index = EXCP_HDECR;
2091 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_HDECR);
2095 /* Decrementer exception */
2096 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DECR)) {
2097 env->exception_index = EXCP_DECR;
2098 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DECR);
2100 /* Programmable interval timer on embedded PowerPC */
2101 } else if (env->pending_interrupts & (1 << PPC_INTERRUPT_PIT)) {
2102 env->exception_index = EXCP_40x_PIT;
2103 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PIT);
2105 /* Fixed interval timer on embedded PowerPC */
2106 } else if (env->pending_interrupts & (1 << PPC_INTERRUPT_FIT)) {
2107 env->exception_index = EXCP_40x_FIT;
2108 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_FIT);
2110 /* Watchdog timer on embedded PowerPC */
2111 } else if (env->pending_interrupts & (1 << PPC_INTERRUPT_WDT)) {
2112 env->exception_index = EXCP_40x_WATCHDOG;
2113 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_WDT);
2115 /* External interrupt */
2116 } else if (env->pending_interrupts & (1 << PPC_INTERRUPT_EXT)) {
2117 env->exception_index = EXCP_EXTERNAL;
2118 /* Taking an external interrupt does not clear the external
2122 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_EXT);
2126 /* Thermal interrupt */
2127 } else if (env->pending_interrupts & (1 << PPC_INTERRUPT_THERM)) {
2128 env->exception_index = EXCP_970_THRM;
2129 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_THERM);
2134 /* External debug exception */
2135 } else if (env->pending_interrupts & (1 << PPC_INTERRUPT_DEBUG)) {
2136 env->exception_index = EXCP_xxx;
2137 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DEBUG);
2142 env->error_code = 0;
2146 #endif /* !CONFIG_USER_ONLY */
2148 void cpu_dump_EA (target_ulong EA)
2158 fprintf(f, "Memory access at address " ADDRX "\n", EA);
2161 void cpu_dump_rfi (target_ulong RA, target_ulong msr)
2171 fprintf(f, "Return from exception at " ADDRX " with flags " ADDRX "\n",
2175 void cpu_ppc_reset (void *opaque)
2180 #if defined (DO_SINGLE_STEP) && 0
2181 /* Single step trace mode */
2185 msr_fp = 1; /* Allow floating point exceptions */
2186 msr_me = 1; /* Allow machine check exceptions */
2187 #if defined(TARGET_PPC64)
2188 msr_sf = 0; /* Boot in 32 bits mode */
2191 #if defined(CONFIG_USER_ONLY)
2195 env->nip = 0xFFFFFFFC;
2196 ppc_tlb_invalidate_all(env);
2198 do_compute_hflags(env);
2202 CPUPPCState *cpu_ppc_init (void)
2206 env = qemu_mallocz(sizeof(CPUPPCState));
2215 void cpu_ppc_close (CPUPPCState *env)
2217 /* Should also remove all opcode tables... */