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, see <http://www.gnu.org/licenses/>.
28 #include "helper_regs.h"
29 #include "qemu-common.h"
35 //#define DEBUG_SOFTWARE_TLB
36 //#define DUMP_PAGE_TABLES
37 //#define DEBUG_EXCEPTIONS
38 //#define FLUSH_ALL_TLBS
41 # define LOG_MMU(...) qemu_log(__VA_ARGS__)
42 # define LOG_MMU_STATE(env) log_cpu_state((env), 0)
44 # define LOG_MMU(...) do { } while (0)
45 # define LOG_MMU_STATE(...) do { } while (0)
49 #ifdef DEBUG_SOFTWARE_TLB
50 # define LOG_SWTLB(...) qemu_log(__VA_ARGS__)
52 # define LOG_SWTLB(...) do { } while (0)
56 # define LOG_BATS(...) qemu_log(__VA_ARGS__)
58 # define LOG_BATS(...) do { } while (0)
62 # define LOG_SLB(...) qemu_log(__VA_ARGS__)
64 # define LOG_SLB(...) do { } while (0)
67 #ifdef DEBUG_EXCEPTIONS
68 # define LOG_EXCP(...) qemu_log(__VA_ARGS__)
70 # define LOG_EXCP(...) do { } while (0)
74 /*****************************************************************************/
75 /* PowerPC MMU emulation */
77 #if defined(CONFIG_USER_ONLY)
78 int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
79 int mmu_idx, int is_softmmu)
81 int exception, error_code;
84 exception = POWERPC_EXCP_ISI;
85 error_code = 0x40000000;
87 exception = POWERPC_EXCP_DSI;
88 error_code = 0x40000000;
90 error_code |= 0x02000000;
91 env->spr[SPR_DAR] = address;
92 env->spr[SPR_DSISR] = error_code;
94 env->exception_index = exception;
95 env->error_code = error_code;
100 target_phys_addr_t cpu_get_phys_page_debug (CPUState *env, target_ulong addr)
106 /* Common routines used by software and hardware TLBs emulation */
107 static inline int pte_is_valid(target_ulong pte0)
109 return pte0 & 0x80000000 ? 1 : 0;
112 static inline void pte_invalidate(target_ulong *pte0)
114 *pte0 &= ~0x80000000;
117 #if defined(TARGET_PPC64)
118 static inline int pte64_is_valid(target_ulong pte0)
120 return pte0 & 0x0000000000000001ULL ? 1 : 0;
123 static inline void pte64_invalidate(target_ulong *pte0)
125 *pte0 &= ~0x0000000000000001ULL;
129 #define PTE_PTEM_MASK 0x7FFFFFBF
130 #define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B)
131 #if defined(TARGET_PPC64)
132 #define PTE64_PTEM_MASK 0xFFFFFFFFFFFFFF80ULL
133 #define PTE64_CHECK_MASK (TARGET_PAGE_MASK | 0x7F)
136 static inline int pp_check(int key, int pp, int nx)
140 /* Compute access rights */
141 /* When pp is 3/7, the result is undefined. Set it to noaccess */
148 access |= PAGE_WRITE;
166 access = PAGE_READ | PAGE_WRITE;
176 static inline int check_prot(int prot, int rw, int access_type)
180 if (access_type == ACCESS_CODE) {
181 if (prot & PAGE_EXEC)
186 if (prot & PAGE_WRITE)
191 if (prot & PAGE_READ)
200 static inline int _pte_check(mmu_ctx_t *ctx, int is_64b, target_ulong pte0,
201 target_ulong pte1, int h, int rw, int type)
203 target_ulong ptem, mmask;
204 int access, ret, pteh, ptev, pp;
208 /* Check validity and table match */
209 #if defined(TARGET_PPC64)
211 ptev = pte64_is_valid(pte0);
212 pteh = (pte0 >> 1) & 1;
216 ptev = pte_is_valid(pte0);
217 pteh = (pte0 >> 6) & 1;
219 if (ptev && h == pteh) {
220 /* Check vsid & api */
221 #if defined(TARGET_PPC64)
223 ptem = pte0 & PTE64_PTEM_MASK;
224 mmask = PTE64_CHECK_MASK;
225 pp = (pte1 & 0x00000003) | ((pte1 >> 61) & 0x00000004);
226 ctx->nx = (pte1 >> 2) & 1; /* No execute bit */
227 ctx->nx |= (pte1 >> 3) & 1; /* Guarded bit */
231 ptem = pte0 & PTE_PTEM_MASK;
232 mmask = PTE_CHECK_MASK;
233 pp = pte1 & 0x00000003;
235 if (ptem == ctx->ptem) {
236 if (ctx->raddr != (target_phys_addr_t)-1ULL) {
237 /* all matches should have equal RPN, WIMG & PP */
238 if ((ctx->raddr & mmask) != (pte1 & mmask)) {
239 qemu_log("Bad RPN/WIMG/PP\n");
243 /* Compute access rights */
244 access = pp_check(ctx->key, pp, ctx->nx);
245 /* Keep the matching PTE informations */
248 ret = check_prot(ctx->prot, rw, type);
251 LOG_MMU("PTE access granted !\n");
253 /* Access right violation */
254 LOG_MMU("PTE access rejected\n");
262 static inline int pte32_check(mmu_ctx_t *ctx, target_ulong pte0,
263 target_ulong pte1, int h, int rw, int type)
265 return _pte_check(ctx, 0, pte0, pte1, h, rw, type);
268 #if defined(TARGET_PPC64)
269 static inline int pte64_check(mmu_ctx_t *ctx, target_ulong pte0,
270 target_ulong pte1, int h, int rw, int type)
272 return _pte_check(ctx, 1, pte0, pte1, h, rw, type);
276 static inline int pte_update_flags(mmu_ctx_t *ctx, target_ulong *pte1p,
281 /* Update page flags */
282 if (!(*pte1p & 0x00000100)) {
283 /* Update accessed flag */
284 *pte1p |= 0x00000100;
287 if (!(*pte1p & 0x00000080)) {
288 if (rw == 1 && ret == 0) {
289 /* Update changed flag */
290 *pte1p |= 0x00000080;
293 /* Force page fault for first write access */
294 ctx->prot &= ~PAGE_WRITE;
301 /* Software driven TLB helpers */
302 static inline int ppc6xx_tlb_getnum(CPUState *env, target_ulong eaddr, int way,
307 /* Select TLB num in a way from address */
308 nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1);
310 nr += env->tlb_per_way * way;
311 /* 6xx have separate TLBs for instructions and data */
312 if (is_code && env->id_tlbs == 1)
318 static inline void ppc6xx_tlb_invalidate_all(CPUState *env)
323 //LOG_SWTLB("Invalidate all TLBs\n");
324 /* Invalidate all defined software TLB */
326 if (env->id_tlbs == 1)
328 for (nr = 0; nr < max; nr++) {
329 tlb = &env->tlb[nr].tlb6;
330 pte_invalidate(&tlb->pte0);
335 static inline void __ppc6xx_tlb_invalidate_virt(CPUState *env,
337 int is_code, int match_epn)
339 #if !defined(FLUSH_ALL_TLBS)
343 /* Invalidate ITLB + DTLB, all ways */
344 for (way = 0; way < env->nb_ways; way++) {
345 nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code);
346 tlb = &env->tlb[nr].tlb6;
347 if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) {
348 LOG_SWTLB("TLB invalidate %d/%d " TARGET_FMT_lx "\n", nr,
350 pte_invalidate(&tlb->pte0);
351 tlb_flush_page(env, tlb->EPN);
355 /* XXX: PowerPC specification say this is valid as well */
356 ppc6xx_tlb_invalidate_all(env);
360 static inline void ppc6xx_tlb_invalidate_virt(CPUState *env,
361 target_ulong eaddr, int is_code)
363 __ppc6xx_tlb_invalidate_virt(env, eaddr, is_code, 0);
366 void ppc6xx_tlb_store (CPUState *env, target_ulong EPN, int way, int is_code,
367 target_ulong pte0, target_ulong pte1)
372 nr = ppc6xx_tlb_getnum(env, EPN, way, is_code);
373 tlb = &env->tlb[nr].tlb6;
374 LOG_SWTLB("Set TLB %d/%d EPN " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx
375 " PTE1 " TARGET_FMT_lx "\n", nr, env->nb_tlb, EPN, pte0, pte1);
376 /* Invalidate any pending reference in Qemu for this virtual address */
377 __ppc6xx_tlb_invalidate_virt(env, EPN, is_code, 1);
381 /* Store last way for LRU mechanism */
385 static inline int ppc6xx_tlb_check(CPUState *env, mmu_ctx_t *ctx,
386 target_ulong eaddr, int rw, int access_type)
393 ret = -1; /* No TLB found */
394 for (way = 0; way < env->nb_ways; way++) {
395 nr = ppc6xx_tlb_getnum(env, eaddr, way,
396 access_type == ACCESS_CODE ? 1 : 0);
397 tlb = &env->tlb[nr].tlb6;
398 /* This test "emulates" the PTE index match for hardware TLBs */
399 if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) {
400 LOG_SWTLB("TLB %d/%d %s [" TARGET_FMT_lx " " TARGET_FMT_lx
401 "] <> " TARGET_FMT_lx "\n", nr, env->nb_tlb,
402 pte_is_valid(tlb->pte0) ? "valid" : "inval",
403 tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr);
406 LOG_SWTLB("TLB %d/%d %s " TARGET_FMT_lx " <> " TARGET_FMT_lx " "
407 TARGET_FMT_lx " %c %c\n", nr, env->nb_tlb,
408 pte_is_valid(tlb->pte0) ? "valid" : "inval",
409 tlb->EPN, eaddr, tlb->pte1,
410 rw ? 'S' : 'L', access_type == ACCESS_CODE ? 'I' : 'D');
411 switch (pte32_check(ctx, tlb->pte0, tlb->pte1, 0, rw, access_type)) {
413 /* TLB inconsistency */
416 /* Access violation */
426 /* XXX: we should go on looping to check all TLBs consistency
427 * but we can speed-up the whole thing as the
428 * result would be undefined if TLBs are not consistent.
437 LOG_SWTLB("found TLB at addr " TARGET_FMT_plx " prot=%01x ret=%d\n",
438 ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret);
439 /* Update page flags */
440 pte_update_flags(ctx, &env->tlb[best].tlb6.pte1, ret, rw);
446 /* Perform BAT hit & translation */
447 static inline void bat_size_prot(CPUState *env, target_ulong *blp, int *validp,
448 int *protp, target_ulong *BATu,
454 bl = (*BATu & 0x00001FFC) << 15;
457 if (((msr_pr == 0) && (*BATu & 0x00000002)) ||
458 ((msr_pr != 0) && (*BATu & 0x00000001))) {
460 pp = *BATl & 0x00000003;
462 prot = PAGE_READ | PAGE_EXEC;
472 static inline void bat_601_size_prot(CPUState *env, target_ulong *blp,
473 int *validp, int *protp,
474 target_ulong *BATu, target_ulong *BATl)
477 int key, pp, valid, prot;
479 bl = (*BATl & 0x0000003F) << 17;
480 LOG_BATS("b %02x ==> bl " TARGET_FMT_lx " msk " TARGET_FMT_lx "\n",
481 (uint8_t)(*BATl & 0x0000003F), bl, ~bl);
483 valid = (*BATl >> 6) & 1;
485 pp = *BATu & 0x00000003;
487 key = (*BATu >> 3) & 1;
489 key = (*BATu >> 2) & 1;
490 prot = pp_check(key, pp, 0);
497 static inline int get_bat(CPUState *env, mmu_ctx_t *ctx, target_ulong virtual,
500 target_ulong *BATlt, *BATut, *BATu, *BATl;
501 target_ulong base, BEPIl, BEPIu, bl;
505 LOG_BATS("%s: %cBAT v " TARGET_FMT_lx "\n", __func__,
506 type == ACCESS_CODE ? 'I' : 'D', virtual);
509 BATlt = env->IBAT[1];
510 BATut = env->IBAT[0];
513 BATlt = env->DBAT[1];
514 BATut = env->DBAT[0];
517 base = virtual & 0xFFFC0000;
518 for (i = 0; i < env->nb_BATs; i++) {
521 BEPIu = *BATu & 0xF0000000;
522 BEPIl = *BATu & 0x0FFE0000;
523 if (unlikely(env->mmu_model == POWERPC_MMU_601)) {
524 bat_601_size_prot(env, &bl, &valid, &prot, BATu, BATl);
526 bat_size_prot(env, &bl, &valid, &prot, BATu, BATl);
528 LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx
529 " BATl " TARGET_FMT_lx "\n", __func__,
530 type == ACCESS_CODE ? 'I' : 'D', i, virtual, *BATu, *BATl);
531 if ((virtual & 0xF0000000) == BEPIu &&
532 ((virtual & 0x0FFE0000) & ~bl) == BEPIl) {
535 /* Get physical address */
536 ctx->raddr = (*BATl & 0xF0000000) |
537 ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) |
538 (virtual & 0x0001F000);
539 /* Compute access rights */
541 ret = check_prot(ctx->prot, rw, type);
543 LOG_BATS("BAT %d match: r " TARGET_FMT_plx " prot=%c%c\n",
544 i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-',
545 ctx->prot & PAGE_WRITE ? 'W' : '-');
551 #if defined(DEBUG_BATS)
552 if (qemu_log_enabled()) {
553 LOG_BATS("no BAT match for " TARGET_FMT_lx ":\n", virtual);
554 for (i = 0; i < 4; i++) {
557 BEPIu = *BATu & 0xF0000000;
558 BEPIl = *BATu & 0x0FFE0000;
559 bl = (*BATu & 0x00001FFC) << 15;
560 LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx
561 " BATl " TARGET_FMT_lx " \n\t" TARGET_FMT_lx " "
562 TARGET_FMT_lx " " TARGET_FMT_lx "\n",
563 __func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual,
564 *BATu, *BATl, BEPIu, BEPIl, bl);
573 /* PTE table lookup */
574 static inline int _find_pte(mmu_ctx_t *ctx, int is_64b, int h, int rw,
575 int type, int target_page_bits)
577 target_ulong base, pte0, pte1;
581 ret = -1; /* No entry found */
582 base = ctx->pg_addr[h];
583 for (i = 0; i < 8; i++) {
584 #if defined(TARGET_PPC64)
586 pte0 = ldq_phys(base + (i * 16));
587 pte1 = ldq_phys(base + (i * 16) + 8);
589 /* We have a TLB that saves 4K pages, so let's
590 * split a huge page to 4k chunks */
591 if (target_page_bits != TARGET_PAGE_BITS)
592 pte1 |= (ctx->eaddr & (( 1 << target_page_bits ) - 1))
595 r = pte64_check(ctx, pte0, pte1, h, rw, type);
596 LOG_MMU("Load pte from " TARGET_FMT_lx " => " TARGET_FMT_lx " "
597 TARGET_FMT_lx " %d %d %d " TARGET_FMT_lx "\n",
598 base + (i * 16), pte0, pte1, (int)(pte0 & 1), h,
599 (int)((pte0 >> 1) & 1), ctx->ptem);
603 pte0 = ldl_phys(base + (i * 8));
604 pte1 = ldl_phys(base + (i * 8) + 4);
605 r = pte32_check(ctx, pte0, pte1, h, rw, type);
606 LOG_MMU("Load pte from " TARGET_FMT_lx " => " TARGET_FMT_lx " "
607 TARGET_FMT_lx " %d %d %d " TARGET_FMT_lx "\n",
608 base + (i * 8), pte0, pte1, (int)(pte0 >> 31), h,
609 (int)((pte0 >> 6) & 1), ctx->ptem);
613 /* PTE inconsistency */
616 /* Access violation */
626 /* XXX: we should go on looping to check all PTEs consistency
627 * but if we can speed-up the whole thing as the
628 * result would be undefined if PTEs are not consistent.
637 LOG_MMU("found PTE at addr " TARGET_FMT_lx " prot=%01x ret=%d\n",
638 ctx->raddr, ctx->prot, ret);
639 /* Update page flags */
641 if (pte_update_flags(ctx, &pte1, ret, rw) == 1) {
642 #if defined(TARGET_PPC64)
644 stq_phys_notdirty(base + (good * 16) + 8, pte1);
648 stl_phys_notdirty(base + (good * 8) + 4, pte1);
656 static inline int find_pte32(mmu_ctx_t *ctx, int h, int rw, int type,
657 int target_page_bits)
659 return _find_pte(ctx, 0, h, rw, type, target_page_bits);
662 #if defined(TARGET_PPC64)
663 static inline int find_pte64(mmu_ctx_t *ctx, int h, int rw, int type,
664 int target_page_bits)
666 return _find_pte(ctx, 1, h, rw, type, target_page_bits);
670 static inline int find_pte(CPUState *env, mmu_ctx_t *ctx, int h, int rw,
671 int type, int target_page_bits)
673 #if defined(TARGET_PPC64)
674 if (env->mmu_model & POWERPC_MMU_64)
675 return find_pte64(ctx, h, rw, type, target_page_bits);
678 return find_pte32(ctx, h, rw, type, target_page_bits);
681 #if defined(TARGET_PPC64)
682 static ppc_slb_t *slb_get_entry(CPUPPCState *env, int nr)
684 ppc_slb_t *retval = &env->slb[nr];
686 #if 0 // XXX implement bridge mode?
687 if (env->spr[SPR_ASR] & 1) {
688 target_phys_addr_t sr_base;
690 sr_base = env->spr[SPR_ASR] & 0xfffffffffffff000;
691 sr_base += (12 * nr);
693 retval->tmp64 = ldq_phys(sr_base);
694 retval->tmp = ldl_phys(sr_base + 8);
701 static void slb_set_entry(CPUPPCState *env, int nr, ppc_slb_t *slb)
703 ppc_slb_t *entry = &env->slb[nr];
708 entry->tmp64 = slb->tmp64;
709 entry->tmp = slb->tmp;
712 static inline int slb_is_valid(ppc_slb_t *slb)
714 return (int)(slb->tmp64 & 0x0000000008000000ULL);
717 static inline void slb_invalidate(ppc_slb_t *slb)
719 slb->tmp64 &= ~0x0000000008000000ULL;
722 static inline int slb_lookup(CPUPPCState *env, target_ulong eaddr,
723 target_ulong *vsid, target_ulong *page_mask,
724 int *attr, int *target_page_bits)
730 LOG_SLB("%s: eaddr " TARGET_FMT_lx "\n", __func__, eaddr);
731 mask = 0x0000000000000000ULL; /* Avoid gcc warning */
732 for (n = 0; n < env->slb_nr; n++) {
733 ppc_slb_t *slb = slb_get_entry(env, n);
735 LOG_SLB("%s: seg %d %016" PRIx64 " %08"
736 PRIx32 "\n", __func__, n, slb->tmp64, slb->tmp);
737 if (slb_is_valid(slb)) {
738 /* SLB entry is valid */
739 if (slb->tmp & 0x8) {
741 mask = 0xFFFF000000000000ULL;
742 if (target_page_bits)
743 *target_page_bits = 24; // XXX 16M pages?
746 mask = 0xFFFFFFFFF0000000ULL;
747 if (target_page_bits)
748 *target_page_bits = TARGET_PAGE_BITS;
750 if ((eaddr & mask) == (slb->tmp64 & mask)) {
752 *vsid = ((slb->tmp64 << 24) | (slb->tmp >> 8)) & 0x0003FFFFFFFFFFFFULL;
754 *attr = slb->tmp & 0xFF;
764 void ppc_slb_invalidate_all (CPUPPCState *env)
766 int n, do_invalidate;
769 /* XXX: Warning: slbia never invalidates the first segment */
770 for (n = 1; n < env->slb_nr; n++) {
771 ppc_slb_t *slb = slb_get_entry(env, n);
773 if (slb_is_valid(slb)) {
775 slb_set_entry(env, n, slb);
776 /* XXX: given the fact that segment size is 256 MB or 1TB,
777 * and we still don't have a tlb_flush_mask(env, n, mask)
778 * in Qemu, we just invalidate all TLBs
787 void ppc_slb_invalidate_one (CPUPPCState *env, uint64_t T0)
789 target_ulong vsid, page_mask;
793 n = slb_lookup(env, T0, &vsid, &page_mask, &attr, NULL);
795 ppc_slb_t *slb = slb_get_entry(env, n);
797 if (slb_is_valid(slb)) {
799 slb_set_entry(env, n, slb);
800 /* XXX: given the fact that segment size is 256 MB or 1TB,
801 * and we still don't have a tlb_flush_mask(env, n, mask)
802 * in Qemu, we just invalidate all TLBs
809 target_ulong ppc_load_slb (CPUPPCState *env, int slb_nr)
812 ppc_slb_t *slb = slb_get_entry(env, slb_nr);
814 if (slb_is_valid(slb)) {
815 /* SLB entry is valid */
816 /* Copy SLB bits 62:88 to Rt 37:63 (VSID 23:49) */
817 rt = slb->tmp >> 8; /* 65:88 => 40:63 */
818 rt |= (slb->tmp64 & 0x7) << 24; /* 62:64 => 37:39 */
819 /* Copy SLB bits 89:92 to Rt 33:36 (KsKpNL) */
820 rt |= ((slb->tmp >> 4) & 0xF) << 27;
824 LOG_SLB("%s: %016" PRIx64 " %08" PRIx32 " => %d "
825 TARGET_FMT_lx "\n", __func__, slb->tmp64, slb->tmp, slb_nr, rt);
830 void ppc_store_slb (CPUPPCState *env, target_ulong rb, target_ulong rs)
836 int flags, valid, slb_nr;
839 flags = ((rs >> 8) & 0xf);
842 valid = (rb & (1 << 27));
845 slb = slb_get_entry(env, slb_nr);
846 slb->tmp64 = (esid << 28) | valid | (vsid >> 24);
847 slb->tmp = (vsid << 8) | (flags << 3);
849 LOG_SLB("%s: %d " TARGET_FMT_lx " - " TARGET_FMT_lx " => %016" PRIx64
850 " %08" PRIx32 "\n", __func__, slb_nr, rb, rs, slb->tmp64,
853 slb_set_entry(env, slb_nr, slb);
855 #endif /* defined(TARGET_PPC64) */
857 /* Perform segment based translation */
858 static inline target_phys_addr_t get_pgaddr(target_phys_addr_t sdr1,
860 target_phys_addr_t hash,
861 target_phys_addr_t mask)
863 return (sdr1 & ((target_phys_addr_t)(-1ULL) << sdr_sh)) | (hash & mask);
866 static inline int get_segment(CPUState *env, mmu_ctx_t *ctx,
867 target_ulong eaddr, int rw, int type)
869 target_phys_addr_t sdr, hash, mask, sdr_mask, htab_mask;
870 target_ulong sr, vsid, vsid_mask, pgidx, page_mask;
871 #if defined(TARGET_PPC64)
874 int ds, vsid_sh, sdr_sh, pr, target_page_bits;
878 #if defined(TARGET_PPC64)
879 if (env->mmu_model & POWERPC_MMU_64) {
880 LOG_MMU("Check SLBs\n");
881 ret = slb_lookup(env, eaddr, &vsid, &page_mask, &attr,
885 ctx->key = ((attr & 0x40) && (pr != 0)) ||
886 ((attr & 0x80) && (pr == 0)) ? 1 : 0;
888 ctx->nx = attr & 0x10 ? 1 : 0;
890 vsid_mask = 0x00003FFFFFFFFF80ULL;
895 #endif /* defined(TARGET_PPC64) */
897 sr = env->sr[eaddr >> 28];
898 page_mask = 0x0FFFFFFF;
899 ctx->key = (((sr & 0x20000000) && (pr != 0)) ||
900 ((sr & 0x40000000) && (pr == 0))) ? 1 : 0;
901 ds = sr & 0x80000000 ? 1 : 0;
902 ctx->nx = sr & 0x10000000 ? 1 : 0;
903 vsid = sr & 0x00FFFFFF;
904 vsid_mask = 0x01FFFFC0;
908 target_page_bits = TARGET_PAGE_BITS;
909 LOG_MMU("Check segment v=" TARGET_FMT_lx " %d " TARGET_FMT_lx " nip="
910 TARGET_FMT_lx " lr=" TARGET_FMT_lx
911 " ir=%d dr=%d pr=%d %d t=%d\n",
912 eaddr, (int)(eaddr >> 28), sr, env->nip, env->lr, (int)msr_ir,
913 (int)msr_dr, pr != 0 ? 1 : 0, rw, type);
915 LOG_MMU("pte segment: key=%d ds %d nx %d vsid " TARGET_FMT_lx "\n",
916 ctx->key, ds, ctx->nx, vsid);
919 /* Check if instruction fetch is allowed, if needed */
920 if (type != ACCESS_CODE || ctx->nx == 0) {
921 /* Page address translation */
922 /* Primary table address */
924 pgidx = (eaddr & page_mask) >> target_page_bits;
925 #if defined(TARGET_PPC64)
926 if (env->mmu_model & POWERPC_MMU_64) {
927 htab_mask = 0x0FFFFFFF >> (28 - (sdr & 0x1F));
928 /* XXX: this is false for 1 TB segments */
929 hash = ((vsid ^ pgidx) << vsid_sh) & vsid_mask;
933 htab_mask = sdr & 0x000001FF;
934 hash = ((vsid ^ pgidx) << vsid_sh) & vsid_mask;
936 mask = (htab_mask << sdr_sh) | sdr_mask;
937 LOG_MMU("sdr " TARGET_FMT_plx " sh %d hash " TARGET_FMT_plx
938 " mask " TARGET_FMT_plx " " TARGET_FMT_lx "\n",
939 sdr, sdr_sh, hash, mask, page_mask);
940 ctx->pg_addr[0] = get_pgaddr(sdr, sdr_sh, hash, mask);
941 /* Secondary table address */
942 hash = (~hash) & vsid_mask;
943 LOG_MMU("sdr " TARGET_FMT_plx " sh %d hash " TARGET_FMT_plx
944 " mask " TARGET_FMT_plx "\n", sdr, sdr_sh, hash, mask);
945 ctx->pg_addr[1] = get_pgaddr(sdr, sdr_sh, hash, mask);
946 #if defined(TARGET_PPC64)
947 if (env->mmu_model & POWERPC_MMU_64) {
948 /* Only 5 bits of the page index are used in the AVPN */
949 if (target_page_bits > 23) {
950 ctx->ptem = (vsid << 12) |
951 ((pgidx << (target_page_bits - 16)) & 0xF80);
953 ctx->ptem = (vsid << 12) | ((pgidx >> 4) & 0x0F80);
958 ctx->ptem = (vsid << 7) | (pgidx >> 10);
960 /* Initialize real address with an invalid value */
961 ctx->raddr = (target_phys_addr_t)-1ULL;
962 if (unlikely(env->mmu_model == POWERPC_MMU_SOFT_6xx ||
963 env->mmu_model == POWERPC_MMU_SOFT_74xx)) {
964 /* Software TLB search */
965 ret = ppc6xx_tlb_check(env, ctx, eaddr, rw, type);
967 LOG_MMU("0 sdr1=" TARGET_FMT_plx " vsid=" TARGET_FMT_lx " "
968 "api=" TARGET_FMT_lx " hash=" TARGET_FMT_plx
969 " pg_addr=" TARGET_FMT_plx "\n",
970 sdr, vsid, pgidx, hash, ctx->pg_addr[0]);
971 /* Primary table lookup */
972 ret = find_pte(env, ctx, 0, rw, type, target_page_bits);
974 /* Secondary table lookup */
975 if (eaddr != 0xEFFFFFFF)
976 LOG_MMU("1 sdr1=" TARGET_FMT_plx " vsid=" TARGET_FMT_lx " "
977 "api=" TARGET_FMT_lx " hash=" TARGET_FMT_plx
978 " pg_addr=" TARGET_FMT_plx "\n", sdr, vsid,
979 pgidx, hash, ctx->pg_addr[1]);
980 ret2 = find_pte(env, ctx, 1, rw, type,
986 #if defined (DUMP_PAGE_TABLES)
987 if (qemu_log_enabled()) {
988 target_phys_addr_t curaddr;
989 uint32_t a0, a1, a2, a3;
990 qemu_log("Page table: " TARGET_FMT_plx " len " TARGET_FMT_plx
991 "\n", sdr, mask + 0x80);
992 for (curaddr = sdr; curaddr < (sdr + mask + 0x80);
994 a0 = ldl_phys(curaddr);
995 a1 = ldl_phys(curaddr + 4);
996 a2 = ldl_phys(curaddr + 8);
997 a3 = ldl_phys(curaddr + 12);
998 if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) {
999 qemu_log(TARGET_FMT_plx ": %08x %08x %08x %08x\n",
1000 curaddr, a0, a1, a2, a3);
1006 LOG_MMU("No access allowed\n");
1010 LOG_MMU("direct store...\n");
1011 /* Direct-store segment : absolutely *BUGGY* for now */
1014 /* Integer load/store : only access allowed */
1017 /* No code fetch is allowed in direct-store areas */
1020 /* Floating point load/store */
1023 /* lwarx, ldarx or srwcx. */
1026 /* dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi */
1027 /* Should make the instruction do no-op.
1028 * As it already do no-op, it's quite easy :-)
1033 /* eciwx or ecowx */
1036 qemu_log("ERROR: instruction should not need "
1037 "address translation\n");
1040 if ((rw == 1 || ctx->key != 1) && (rw == 0 || ctx->key != 0)) {
1051 /* Generic TLB check function for embedded PowerPC implementations */
1052 static inline int ppcemb_tlb_check(CPUState *env, ppcemb_tlb_t *tlb,
1053 target_phys_addr_t *raddrp,
1054 target_ulong address, uint32_t pid, int ext,
1059 /* Check valid flag */
1060 if (!(tlb->prot & PAGE_VALID)) {
1061 qemu_log("%s: TLB %d not valid\n", __func__, i);
1064 mask = ~(tlb->size - 1);
1065 LOG_SWTLB("%s: TLB %d address " TARGET_FMT_lx " PID %u <=> " TARGET_FMT_lx
1066 " " TARGET_FMT_lx " %u\n", __func__, i, address, pid, tlb->EPN,
1067 mask, (uint32_t)tlb->PID);
1069 if (tlb->PID != 0 && tlb->PID != pid)
1071 /* Check effective address */
1072 if ((address & mask) != tlb->EPN)
1074 *raddrp = (tlb->RPN & mask) | (address & ~mask);
1075 #if (TARGET_PHYS_ADDR_BITS >= 36)
1077 /* Extend the physical address to 36 bits */
1078 *raddrp |= (target_phys_addr_t)(tlb->RPN & 0xF) << 32;
1085 /* Generic TLB search function for PowerPC embedded implementations */
1086 int ppcemb_tlb_search (CPUPPCState *env, target_ulong address, uint32_t pid)
1089 target_phys_addr_t raddr;
1092 /* Default return value is no match */
1094 for (i = 0; i < env->nb_tlb; i++) {
1095 tlb = &env->tlb[i].tlbe;
1096 if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) {
1105 /* Helpers specific to PowerPC 40x implementations */
1106 static inline void ppc4xx_tlb_invalidate_all(CPUState *env)
1111 for (i = 0; i < env->nb_tlb; i++) {
1112 tlb = &env->tlb[i].tlbe;
1113 tlb->prot &= ~PAGE_VALID;
1118 static inline void ppc4xx_tlb_invalidate_virt(CPUState *env,
1119 target_ulong eaddr, uint32_t pid)
1121 #if !defined(FLUSH_ALL_TLBS)
1123 target_phys_addr_t raddr;
1124 target_ulong page, end;
1127 for (i = 0; i < env->nb_tlb; i++) {
1128 tlb = &env->tlb[i].tlbe;
1129 if (ppcemb_tlb_check(env, tlb, &raddr, eaddr, pid, 0, i) == 0) {
1130 end = tlb->EPN + tlb->size;
1131 for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE)
1132 tlb_flush_page(env, page);
1133 tlb->prot &= ~PAGE_VALID;
1138 ppc4xx_tlb_invalidate_all(env);
1142 static int mmu40x_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
1143 target_ulong address, int rw, int access_type)
1146 target_phys_addr_t raddr;
1147 int i, ret, zsel, zpr, pr;
1150 raddr = (target_phys_addr_t)-1ULL;
1152 for (i = 0; i < env->nb_tlb; i++) {
1153 tlb = &env->tlb[i].tlbe;
1154 if (ppcemb_tlb_check(env, tlb, &raddr, address,
1155 env->spr[SPR_40x_PID], 0, i) < 0)
1157 zsel = (tlb->attr >> 4) & 0xF;
1158 zpr = (env->spr[SPR_40x_ZPR] >> (28 - (2 * zsel))) & 0x3;
1159 LOG_SWTLB("%s: TLB %d zsel %d zpr %d rw %d attr %08x\n",
1160 __func__, i, zsel, zpr, rw, tlb->attr);
1161 /* Check execute enable bit */
1168 /* All accesses granted */
1169 ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
1181 /* Check from TLB entry */
1182 /* XXX: there is a problem here or in the TLB fill code... */
1183 ctx->prot = tlb->prot;
1184 ctx->prot |= PAGE_EXEC;
1185 ret = check_prot(ctx->prot, rw, access_type);
1190 LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx
1191 " %d %d\n", __func__, address, ctx->raddr, ctx->prot,
1196 LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx
1197 " %d %d\n", __func__, address, raddr, ctx->prot, ret);
1202 void store_40x_sler (CPUPPCState *env, uint32_t val)
1204 /* XXX: TO BE FIXED */
1205 if (val != 0x00000000) {
1206 cpu_abort(env, "Little-endian regions are not supported by now\n");
1208 env->spr[SPR_405_SLER] = val;
1211 static int mmubooke_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
1212 target_ulong address, int rw,
1216 target_phys_addr_t raddr;
1220 raddr = (target_phys_addr_t)-1ULL;
1221 for (i = 0; i < env->nb_tlb; i++) {
1222 tlb = &env->tlb[i].tlbe;
1223 if (ppcemb_tlb_check(env, tlb, &raddr, address,
1224 env->spr[SPR_BOOKE_PID], 1, i) < 0)
1227 prot = tlb->prot & 0xF;
1229 prot = (tlb->prot >> 4) & 0xF;
1230 /* Check the address space */
1231 if (access_type == ACCESS_CODE) {
1232 if (msr_ir != (tlb->attr & 1))
1235 if (prot & PAGE_EXEC) {
1241 if (msr_dr != (tlb->attr & 1))
1244 if ((!rw && prot & PAGE_READ) || (rw && (prot & PAGE_WRITE))) {
1257 static inline int check_physical(CPUState *env, mmu_ctx_t *ctx,
1258 target_ulong eaddr, int rw)
1263 ctx->prot = PAGE_READ | PAGE_EXEC;
1265 switch (env->mmu_model) {
1266 case POWERPC_MMU_32B:
1267 case POWERPC_MMU_601:
1268 case POWERPC_MMU_SOFT_6xx:
1269 case POWERPC_MMU_SOFT_74xx:
1270 case POWERPC_MMU_SOFT_4xx:
1271 case POWERPC_MMU_REAL:
1272 case POWERPC_MMU_BOOKE:
1273 ctx->prot |= PAGE_WRITE;
1275 #if defined(TARGET_PPC64)
1276 case POWERPC_MMU_620:
1277 case POWERPC_MMU_64B:
1278 /* Real address are 60 bits long */
1279 ctx->raddr &= 0x0FFFFFFFFFFFFFFFULL;
1280 ctx->prot |= PAGE_WRITE;
1283 case POWERPC_MMU_SOFT_4xx_Z:
1284 if (unlikely(msr_pe != 0)) {
1285 /* 403 family add some particular protections,
1286 * using PBL/PBU registers for accesses with no translation.
1289 /* Check PLB validity */
1290 (env->pb[0] < env->pb[1] &&
1291 /* and address in plb area */
1292 eaddr >= env->pb[0] && eaddr < env->pb[1]) ||
1293 (env->pb[2] < env->pb[3] &&
1294 eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0;
1295 if (in_plb ^ msr_px) {
1296 /* Access in protected area */
1298 /* Access is not allowed */
1302 /* Read-write access is allowed */
1303 ctx->prot |= PAGE_WRITE;
1307 case POWERPC_MMU_MPC8xx:
1309 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1311 case POWERPC_MMU_BOOKE_FSL:
1313 cpu_abort(env, "BookE FSL MMU model not implemented\n");
1316 cpu_abort(env, "Unknown or invalid MMU model\n");
1323 int get_physical_address (CPUState *env, mmu_ctx_t *ctx, target_ulong eaddr,
1324 int rw, int access_type)
1329 qemu_log("%s\n", __func__);
1331 if ((access_type == ACCESS_CODE && msr_ir == 0) ||
1332 (access_type != ACCESS_CODE && msr_dr == 0)) {
1333 /* No address translation */
1334 ret = check_physical(env, ctx, eaddr, rw);
1337 switch (env->mmu_model) {
1338 case POWERPC_MMU_32B:
1339 case POWERPC_MMU_601:
1340 case POWERPC_MMU_SOFT_6xx:
1341 case POWERPC_MMU_SOFT_74xx:
1342 /* Try to find a BAT */
1343 if (env->nb_BATs != 0)
1344 ret = get_bat(env, ctx, eaddr, rw, access_type);
1345 #if defined(TARGET_PPC64)
1346 case POWERPC_MMU_620:
1347 case POWERPC_MMU_64B:
1350 /* We didn't match any BAT entry or don't have BATs */
1351 ret = get_segment(env, ctx, eaddr, rw, access_type);
1354 case POWERPC_MMU_SOFT_4xx:
1355 case POWERPC_MMU_SOFT_4xx_Z:
1356 ret = mmu40x_get_physical_address(env, ctx, eaddr,
1359 case POWERPC_MMU_BOOKE:
1360 ret = mmubooke_get_physical_address(env, ctx, eaddr,
1363 case POWERPC_MMU_MPC8xx:
1365 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1367 case POWERPC_MMU_BOOKE_FSL:
1369 cpu_abort(env, "BookE FSL MMU model not implemented\n");
1371 case POWERPC_MMU_REAL:
1372 cpu_abort(env, "PowerPC in real mode do not do any translation\n");
1375 cpu_abort(env, "Unknown or invalid MMU model\n");
1380 qemu_log("%s address " TARGET_FMT_lx " => %d " TARGET_FMT_plx "\n",
1381 __func__, eaddr, ret, ctx->raddr);
1387 target_phys_addr_t cpu_get_phys_page_debug (CPUState *env, target_ulong addr)
1391 if (unlikely(get_physical_address(env, &ctx, addr, 0, ACCESS_INT) != 0))
1394 return ctx.raddr & TARGET_PAGE_MASK;
1397 /* Perform address translation */
1398 int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
1399 int mmu_idx, int is_softmmu)
1408 access_type = ACCESS_CODE;
1411 access_type = env->access_type;
1413 ret = get_physical_address(env, &ctx, address, rw, access_type);
1415 ret = tlb_set_page_exec(env, address & TARGET_PAGE_MASK,
1416 ctx.raddr & TARGET_PAGE_MASK, ctx.prot,
1417 mmu_idx, is_softmmu);
1418 } else if (ret < 0) {
1420 if (access_type == ACCESS_CODE) {
1423 /* No matches in page tables or TLB */
1424 switch (env->mmu_model) {
1425 case POWERPC_MMU_SOFT_6xx:
1426 env->exception_index = POWERPC_EXCP_IFTLB;
1427 env->error_code = 1 << 18;
1428 env->spr[SPR_IMISS] = address;
1429 env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem;
1431 case POWERPC_MMU_SOFT_74xx:
1432 env->exception_index = POWERPC_EXCP_IFTLB;
1434 case POWERPC_MMU_SOFT_4xx:
1435 case POWERPC_MMU_SOFT_4xx_Z:
1436 env->exception_index = POWERPC_EXCP_ITLB;
1437 env->error_code = 0;
1438 env->spr[SPR_40x_DEAR] = address;
1439 env->spr[SPR_40x_ESR] = 0x00000000;
1441 case POWERPC_MMU_32B:
1442 case POWERPC_MMU_601:
1443 #if defined(TARGET_PPC64)
1444 case POWERPC_MMU_620:
1445 case POWERPC_MMU_64B:
1447 env->exception_index = POWERPC_EXCP_ISI;
1448 env->error_code = 0x40000000;
1450 case POWERPC_MMU_BOOKE:
1452 cpu_abort(env, "BookE MMU model is not implemented\n");
1454 case POWERPC_MMU_BOOKE_FSL:
1456 cpu_abort(env, "BookE FSL MMU model is not implemented\n");
1458 case POWERPC_MMU_MPC8xx:
1460 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1462 case POWERPC_MMU_REAL:
1463 cpu_abort(env, "PowerPC in real mode should never raise "
1464 "any MMU exceptions\n");
1467 cpu_abort(env, "Unknown or invalid MMU model\n");
1472 /* Access rights violation */
1473 env->exception_index = POWERPC_EXCP_ISI;
1474 env->error_code = 0x08000000;
1477 /* No execute protection violation */
1478 env->exception_index = POWERPC_EXCP_ISI;
1479 env->error_code = 0x10000000;
1482 /* Direct store exception */
1483 /* No code fetch is allowed in direct-store areas */
1484 env->exception_index = POWERPC_EXCP_ISI;
1485 env->error_code = 0x10000000;
1487 #if defined(TARGET_PPC64)
1489 /* No match in segment table */
1490 if (env->mmu_model == POWERPC_MMU_620) {
1491 env->exception_index = POWERPC_EXCP_ISI;
1492 /* XXX: this might be incorrect */
1493 env->error_code = 0x40000000;
1495 env->exception_index = POWERPC_EXCP_ISEG;
1496 env->error_code = 0;
1504 /* No matches in page tables or TLB */
1505 switch (env->mmu_model) {
1506 case POWERPC_MMU_SOFT_6xx:
1508 env->exception_index = POWERPC_EXCP_DSTLB;
1509 env->error_code = 1 << 16;
1511 env->exception_index = POWERPC_EXCP_DLTLB;
1512 env->error_code = 0;
1514 env->spr[SPR_DMISS] = address;
1515 env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem;
1517 env->error_code |= ctx.key << 19;
1518 env->spr[SPR_HASH1] = ctx.pg_addr[0];
1519 env->spr[SPR_HASH2] = ctx.pg_addr[1];
1521 case POWERPC_MMU_SOFT_74xx:
1523 env->exception_index = POWERPC_EXCP_DSTLB;
1525 env->exception_index = POWERPC_EXCP_DLTLB;
1528 /* Implement LRU algorithm */
1529 env->error_code = ctx.key << 19;
1530 env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) |
1531 ((env->last_way + 1) & (env->nb_ways - 1));
1532 env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem;
1534 case POWERPC_MMU_SOFT_4xx:
1535 case POWERPC_MMU_SOFT_4xx_Z:
1536 env->exception_index = POWERPC_EXCP_DTLB;
1537 env->error_code = 0;
1538 env->spr[SPR_40x_DEAR] = address;
1540 env->spr[SPR_40x_ESR] = 0x00800000;
1542 env->spr[SPR_40x_ESR] = 0x00000000;
1544 case POWERPC_MMU_32B:
1545 case POWERPC_MMU_601:
1546 #if defined(TARGET_PPC64)
1547 case POWERPC_MMU_620:
1548 case POWERPC_MMU_64B:
1550 env->exception_index = POWERPC_EXCP_DSI;
1551 env->error_code = 0;
1552 env->spr[SPR_DAR] = address;
1554 env->spr[SPR_DSISR] = 0x42000000;
1556 env->spr[SPR_DSISR] = 0x40000000;
1558 case POWERPC_MMU_MPC8xx:
1560 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1562 case POWERPC_MMU_BOOKE:
1564 cpu_abort(env, "BookE MMU model is not implemented\n");
1566 case POWERPC_MMU_BOOKE_FSL:
1568 cpu_abort(env, "BookE FSL MMU model is not implemented\n");
1570 case POWERPC_MMU_REAL:
1571 cpu_abort(env, "PowerPC in real mode should never raise "
1572 "any MMU exceptions\n");
1575 cpu_abort(env, "Unknown or invalid MMU model\n");
1580 /* Access rights violation */
1581 env->exception_index = POWERPC_EXCP_DSI;
1582 env->error_code = 0;
1583 env->spr[SPR_DAR] = address;
1585 env->spr[SPR_DSISR] = 0x0A000000;
1587 env->spr[SPR_DSISR] = 0x08000000;
1590 /* Direct store exception */
1591 switch (access_type) {
1593 /* Floating point load/store */
1594 env->exception_index = POWERPC_EXCP_ALIGN;
1595 env->error_code = POWERPC_EXCP_ALIGN_FP;
1596 env->spr[SPR_DAR] = address;
1599 /* lwarx, ldarx or stwcx. */
1600 env->exception_index = POWERPC_EXCP_DSI;
1601 env->error_code = 0;
1602 env->spr[SPR_DAR] = address;
1604 env->spr[SPR_DSISR] = 0x06000000;
1606 env->spr[SPR_DSISR] = 0x04000000;
1609 /* eciwx or ecowx */
1610 env->exception_index = POWERPC_EXCP_DSI;
1611 env->error_code = 0;
1612 env->spr[SPR_DAR] = address;
1614 env->spr[SPR_DSISR] = 0x06100000;
1616 env->spr[SPR_DSISR] = 0x04100000;
1619 printf("DSI: invalid exception (%d)\n", ret);
1620 env->exception_index = POWERPC_EXCP_PROGRAM;
1622 POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL;
1623 env->spr[SPR_DAR] = address;
1627 #if defined(TARGET_PPC64)
1629 /* No match in segment table */
1630 if (env->mmu_model == POWERPC_MMU_620) {
1631 env->exception_index = POWERPC_EXCP_DSI;
1632 env->error_code = 0;
1633 env->spr[SPR_DAR] = address;
1634 /* XXX: this might be incorrect */
1636 env->spr[SPR_DSISR] = 0x42000000;
1638 env->spr[SPR_DSISR] = 0x40000000;
1640 env->exception_index = POWERPC_EXCP_DSEG;
1641 env->error_code = 0;
1642 env->spr[SPR_DAR] = address;
1649 printf("%s: set exception to %d %02x\n", __func__,
1650 env->exception, env->error_code);
1658 /*****************************************************************************/
1659 /* BATs management */
1660 #if !defined(FLUSH_ALL_TLBS)
1661 static inline void do_invalidate_BAT(CPUPPCState *env, target_ulong BATu,
1664 target_ulong base, end, page;
1666 base = BATu & ~0x0001FFFF;
1667 end = base + mask + 0x00020000;
1668 LOG_BATS("Flush BAT from " TARGET_FMT_lx " to " TARGET_FMT_lx " ("
1669 TARGET_FMT_lx ")\n", base, end, mask);
1670 for (page = base; page != end; page += TARGET_PAGE_SIZE)
1671 tlb_flush_page(env, page);
1672 LOG_BATS("Flush done\n");
1676 static inline void dump_store_bat(CPUPPCState *env, char ID, int ul, int nr,
1679 LOG_BATS("Set %cBAT%d%c to " TARGET_FMT_lx " (" TARGET_FMT_lx ")\n", ID,
1680 nr, ul == 0 ? 'u' : 'l', value, env->nip);
1683 void ppc_store_ibatu (CPUPPCState *env, int nr, target_ulong value)
1687 dump_store_bat(env, 'I', 0, nr, value);
1688 if (env->IBAT[0][nr] != value) {
1689 mask = (value << 15) & 0x0FFE0000UL;
1690 #if !defined(FLUSH_ALL_TLBS)
1691 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1693 /* When storing valid upper BAT, mask BEPI and BRPN
1694 * and invalidate all TLBs covered by this BAT
1696 mask = (value << 15) & 0x0FFE0000UL;
1697 env->IBAT[0][nr] = (value & 0x00001FFFUL) |
1698 (value & ~0x0001FFFFUL & ~mask);
1699 env->IBAT[1][nr] = (env->IBAT[1][nr] & 0x0000007B) |
1700 (env->IBAT[1][nr] & ~0x0001FFFF & ~mask);
1701 #if !defined(FLUSH_ALL_TLBS)
1702 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1709 void ppc_store_ibatl (CPUPPCState *env, int nr, target_ulong value)
1711 dump_store_bat(env, 'I', 1, nr, value);
1712 env->IBAT[1][nr] = value;
1715 void ppc_store_dbatu (CPUPPCState *env, int nr, target_ulong value)
1719 dump_store_bat(env, 'D', 0, nr, value);
1720 if (env->DBAT[0][nr] != value) {
1721 /* When storing valid upper BAT, mask BEPI and BRPN
1722 * and invalidate all TLBs covered by this BAT
1724 mask = (value << 15) & 0x0FFE0000UL;
1725 #if !defined(FLUSH_ALL_TLBS)
1726 do_invalidate_BAT(env, env->DBAT[0][nr], mask);
1728 mask = (value << 15) & 0x0FFE0000UL;
1729 env->DBAT[0][nr] = (value & 0x00001FFFUL) |
1730 (value & ~0x0001FFFFUL & ~mask);
1731 env->DBAT[1][nr] = (env->DBAT[1][nr] & 0x0000007B) |
1732 (env->DBAT[1][nr] & ~0x0001FFFF & ~mask);
1733 #if !defined(FLUSH_ALL_TLBS)
1734 do_invalidate_BAT(env, env->DBAT[0][nr], mask);
1741 void ppc_store_dbatl (CPUPPCState *env, int nr, target_ulong value)
1743 dump_store_bat(env, 'D', 1, nr, value);
1744 env->DBAT[1][nr] = value;
1747 void ppc_store_ibatu_601 (CPUPPCState *env, int nr, target_ulong value)
1752 dump_store_bat(env, 'I', 0, nr, value);
1753 if (env->IBAT[0][nr] != value) {
1755 mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL;
1756 if (env->IBAT[1][nr] & 0x40) {
1757 /* Invalidate BAT only if it is valid */
1758 #if !defined(FLUSH_ALL_TLBS)
1759 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1764 /* When storing valid upper BAT, mask BEPI and BRPN
1765 * and invalidate all TLBs covered by this BAT
1767 env->IBAT[0][nr] = (value & 0x00001FFFUL) |
1768 (value & ~0x0001FFFFUL & ~mask);
1769 env->DBAT[0][nr] = env->IBAT[0][nr];
1770 if (env->IBAT[1][nr] & 0x40) {
1771 #if !defined(FLUSH_ALL_TLBS)
1772 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1777 #if defined(FLUSH_ALL_TLBS)
1784 void ppc_store_ibatl_601 (CPUPPCState *env, int nr, target_ulong value)
1789 dump_store_bat(env, 'I', 1, nr, value);
1790 if (env->IBAT[1][nr] != value) {
1792 if (env->IBAT[1][nr] & 0x40) {
1793 #if !defined(FLUSH_ALL_TLBS)
1794 mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL;
1795 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1801 #if !defined(FLUSH_ALL_TLBS)
1802 mask = (value << 17) & 0x0FFE0000UL;
1803 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1808 env->IBAT[1][nr] = value;
1809 env->DBAT[1][nr] = value;
1810 #if defined(FLUSH_ALL_TLBS)
1817 /*****************************************************************************/
1818 /* TLB management */
1819 void ppc_tlb_invalidate_all (CPUPPCState *env)
1821 switch (env->mmu_model) {
1822 case POWERPC_MMU_SOFT_6xx:
1823 case POWERPC_MMU_SOFT_74xx:
1824 ppc6xx_tlb_invalidate_all(env);
1826 case POWERPC_MMU_SOFT_4xx:
1827 case POWERPC_MMU_SOFT_4xx_Z:
1828 ppc4xx_tlb_invalidate_all(env);
1830 case POWERPC_MMU_REAL:
1831 cpu_abort(env, "No TLB for PowerPC 4xx in real mode\n");
1833 case POWERPC_MMU_MPC8xx:
1835 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1837 case POWERPC_MMU_BOOKE:
1839 cpu_abort(env, "BookE MMU model is not implemented\n");
1841 case POWERPC_MMU_BOOKE_FSL:
1844 cpu_abort(env, "BookE MMU model is not implemented\n");
1846 case POWERPC_MMU_32B:
1847 case POWERPC_MMU_601:
1848 #if defined(TARGET_PPC64)
1849 case POWERPC_MMU_620:
1850 case POWERPC_MMU_64B:
1851 #endif /* defined(TARGET_PPC64) */
1856 cpu_abort(env, "Unknown MMU model\n");
1861 void ppc_tlb_invalidate_one (CPUPPCState *env, target_ulong addr)
1863 #if !defined(FLUSH_ALL_TLBS)
1864 addr &= TARGET_PAGE_MASK;
1865 switch (env->mmu_model) {
1866 case POWERPC_MMU_SOFT_6xx:
1867 case POWERPC_MMU_SOFT_74xx:
1868 ppc6xx_tlb_invalidate_virt(env, addr, 0);
1869 if (env->id_tlbs == 1)
1870 ppc6xx_tlb_invalidate_virt(env, addr, 1);
1872 case POWERPC_MMU_SOFT_4xx:
1873 case POWERPC_MMU_SOFT_4xx_Z:
1874 ppc4xx_tlb_invalidate_virt(env, addr, env->spr[SPR_40x_PID]);
1876 case POWERPC_MMU_REAL:
1877 cpu_abort(env, "No TLB for PowerPC 4xx in real mode\n");
1879 case POWERPC_MMU_MPC8xx:
1881 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1883 case POWERPC_MMU_BOOKE:
1885 cpu_abort(env, "BookE MMU model is not implemented\n");
1887 case POWERPC_MMU_BOOKE_FSL:
1889 cpu_abort(env, "BookE FSL MMU model is not implemented\n");
1891 case POWERPC_MMU_32B:
1892 case POWERPC_MMU_601:
1893 /* tlbie invalidate TLBs for all segments */
1894 addr &= ~((target_ulong)-1ULL << 28);
1895 /* XXX: this case should be optimized,
1896 * giving a mask to tlb_flush_page
1898 tlb_flush_page(env, addr | (0x0 << 28));
1899 tlb_flush_page(env, addr | (0x1 << 28));
1900 tlb_flush_page(env, addr | (0x2 << 28));
1901 tlb_flush_page(env, addr | (0x3 << 28));
1902 tlb_flush_page(env, addr | (0x4 << 28));
1903 tlb_flush_page(env, addr | (0x5 << 28));
1904 tlb_flush_page(env, addr | (0x6 << 28));
1905 tlb_flush_page(env, addr | (0x7 << 28));
1906 tlb_flush_page(env, addr | (0x8 << 28));
1907 tlb_flush_page(env, addr | (0x9 << 28));
1908 tlb_flush_page(env, addr | (0xA << 28));
1909 tlb_flush_page(env, addr | (0xB << 28));
1910 tlb_flush_page(env, addr | (0xC << 28));
1911 tlb_flush_page(env, addr | (0xD << 28));
1912 tlb_flush_page(env, addr | (0xE << 28));
1913 tlb_flush_page(env, addr | (0xF << 28));
1915 #if defined(TARGET_PPC64)
1916 case POWERPC_MMU_620:
1917 case POWERPC_MMU_64B:
1918 /* tlbie invalidate TLBs for all segments */
1919 /* XXX: given the fact that there are too many segments to invalidate,
1920 * and we still don't have a tlb_flush_mask(env, n, mask) in Qemu,
1921 * we just invalidate all TLBs
1925 #endif /* defined(TARGET_PPC64) */
1928 cpu_abort(env, "Unknown MMU model\n");
1932 ppc_tlb_invalidate_all(env);
1936 /*****************************************************************************/
1937 /* Special registers manipulation */
1938 #if defined(TARGET_PPC64)
1939 void ppc_store_asr (CPUPPCState *env, target_ulong value)
1941 if (env->asr != value) {
1948 void ppc_store_sdr1 (CPUPPCState *env, target_ulong value)
1950 LOG_MMU("%s: " TARGET_FMT_lx "\n", __func__, value);
1951 if (env->sdr1 != value) {
1952 /* XXX: for PowerPC 64, should check that the HTABSIZE value
1960 #if defined(TARGET_PPC64)
1961 target_ulong ppc_load_sr (CPUPPCState *env, int slb_nr)
1968 void ppc_store_sr (CPUPPCState *env, int srnum, target_ulong value)
1970 LOG_MMU("%s: reg=%d " TARGET_FMT_lx " " TARGET_FMT_lx "\n", __func__,
1971 srnum, value, env->sr[srnum]);
1972 #if defined(TARGET_PPC64)
1973 if (env->mmu_model & POWERPC_MMU_64) {
1974 uint64_t rb = 0, rs = 0;
1977 rb |= ((uint32_t)srnum & 0xf) << 28;
1978 /* Set the valid bit */
1981 rb |= (uint32_t)srnum;
1984 rs |= (value & 0xfffffff) << 12;
1986 rs |= ((value >> 27) & 0xf) << 9;
1988 ppc_store_slb(env, rb, rs);
1991 if (env->sr[srnum] != value) {
1992 env->sr[srnum] = value;
1993 /* Invalidating 256MB of virtual memory in 4kB pages is way longer than
1994 flusing the whole TLB. */
1995 #if !defined(FLUSH_ALL_TLBS) && 0
1997 target_ulong page, end;
1998 /* Invalidate 256 MB of virtual memory */
1999 page = (16 << 20) * srnum;
2000 end = page + (16 << 20);
2001 for (; page != end; page += TARGET_PAGE_SIZE)
2002 tlb_flush_page(env, page);
2009 #endif /* !defined (CONFIG_USER_ONLY) */
2011 /* GDBstub can read and write MSR... */
2012 void ppc_store_msr (CPUPPCState *env, target_ulong value)
2014 hreg_store_msr(env, value, 0);
2017 /*****************************************************************************/
2018 /* Exception processing */
2019 #if defined (CONFIG_USER_ONLY)
2020 void do_interrupt (CPUState *env)
2022 env->exception_index = POWERPC_EXCP_NONE;
2023 env->error_code = 0;
2026 void ppc_hw_interrupt (CPUState *env)
2028 env->exception_index = POWERPC_EXCP_NONE;
2029 env->error_code = 0;
2031 #else /* defined (CONFIG_USER_ONLY) */
2032 static inline void dump_syscall(CPUState *env)
2034 qemu_log_mask(CPU_LOG_INT, "syscall r0=%016" PRIx64 " r3=%016" PRIx64
2035 " r4=%016" PRIx64 " r5=%016" PRIx64 " r6=%016" PRIx64
2036 " nip=" TARGET_FMT_lx "\n",
2037 ppc_dump_gpr(env, 0), ppc_dump_gpr(env, 3),
2038 ppc_dump_gpr(env, 4), ppc_dump_gpr(env, 5),
2039 ppc_dump_gpr(env, 6), env->nip);
2042 /* Note that this function should be greatly optimized
2043 * when called with a constant excp, from ppc_hw_interrupt
2045 static inline void powerpc_excp(CPUState *env, int excp_model, int excp)
2047 target_ulong msr, new_msr, vector;
2048 int srr0, srr1, asrr0, asrr1;
2049 int lpes0, lpes1, lev;
2052 /* XXX: find a suitable condition to enable the hypervisor mode */
2053 lpes0 = (env->spr[SPR_LPCR] >> 1) & 1;
2054 lpes1 = (env->spr[SPR_LPCR] >> 2) & 1;
2056 /* Those values ensure we won't enter the hypervisor mode */
2061 qemu_log_mask(CPU_LOG_INT, "Raise exception at " TARGET_FMT_lx
2062 " => %08x (%02x)\n", env->nip, excp, env->error_code);
2069 msr &= ~((target_ulong)0x783F0000);
2071 case POWERPC_EXCP_NONE:
2072 /* Should never happen */
2074 case POWERPC_EXCP_CRITICAL: /* Critical input */
2075 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2076 switch (excp_model) {
2077 case POWERPC_EXCP_40x:
2078 srr0 = SPR_40x_SRR2;
2079 srr1 = SPR_40x_SRR3;
2081 case POWERPC_EXCP_BOOKE:
2082 srr0 = SPR_BOOKE_CSRR0;
2083 srr1 = SPR_BOOKE_CSRR1;
2085 case POWERPC_EXCP_G2:
2091 case POWERPC_EXCP_MCHECK: /* Machine check exception */
2093 /* Machine check exception is not enabled.
2094 * Enter checkstop state.
2096 if (qemu_log_enabled()) {
2097 qemu_log("Machine check while not allowed. "
2098 "Entering checkstop state\n");
2100 fprintf(stderr, "Machine check while not allowed. "
2101 "Entering checkstop state\n");
2104 env->interrupt_request |= CPU_INTERRUPT_EXITTB;
2106 new_msr &= ~((target_ulong)1 << MSR_RI);
2107 new_msr &= ~((target_ulong)1 << MSR_ME);
2109 /* XXX: find a suitable condition to enable the hypervisor mode */
2110 new_msr |= (target_ulong)MSR_HVB;
2112 /* XXX: should also have something loaded in DAR / DSISR */
2113 switch (excp_model) {
2114 case POWERPC_EXCP_40x:
2115 srr0 = SPR_40x_SRR2;
2116 srr1 = SPR_40x_SRR3;
2118 case POWERPC_EXCP_BOOKE:
2119 srr0 = SPR_BOOKE_MCSRR0;
2120 srr1 = SPR_BOOKE_MCSRR1;
2121 asrr0 = SPR_BOOKE_CSRR0;
2122 asrr1 = SPR_BOOKE_CSRR1;
2128 case POWERPC_EXCP_DSI: /* Data storage exception */
2129 LOG_EXCP("DSI exception: DSISR=" TARGET_FMT_lx" DAR=" TARGET_FMT_lx
2130 "\n", env->spr[SPR_DSISR], env->spr[SPR_DAR]);
2131 new_msr &= ~((target_ulong)1 << MSR_RI);
2133 new_msr |= (target_ulong)MSR_HVB;
2135 case POWERPC_EXCP_ISI: /* Instruction storage exception */
2136 LOG_EXCP("ISI exception: msr=" TARGET_FMT_lx ", nip=" TARGET_FMT_lx
2137 "\n", msr, env->nip);
2138 new_msr &= ~((target_ulong)1 << MSR_RI);
2140 new_msr |= (target_ulong)MSR_HVB;
2141 msr |= env->error_code;
2143 case POWERPC_EXCP_EXTERNAL: /* External input */
2144 new_msr &= ~((target_ulong)1 << MSR_RI);
2146 new_msr |= (target_ulong)MSR_HVB;
2148 case POWERPC_EXCP_ALIGN: /* Alignment exception */
2149 new_msr &= ~((target_ulong)1 << MSR_RI);
2151 new_msr |= (target_ulong)MSR_HVB;
2152 /* XXX: this is false */
2153 /* Get rS/rD and rA from faulting opcode */
2154 env->spr[SPR_DSISR] |= (ldl_code((env->nip - 4)) & 0x03FF0000) >> 16;
2156 case POWERPC_EXCP_PROGRAM: /* Program exception */
2157 switch (env->error_code & ~0xF) {
2158 case POWERPC_EXCP_FP:
2159 if ((msr_fe0 == 0 && msr_fe1 == 0) || msr_fp == 0) {
2160 LOG_EXCP("Ignore floating point exception\n");
2161 env->exception_index = POWERPC_EXCP_NONE;
2162 env->error_code = 0;
2165 new_msr &= ~((target_ulong)1 << MSR_RI);
2167 new_msr |= (target_ulong)MSR_HVB;
2169 if (msr_fe0 == msr_fe1)
2173 case POWERPC_EXCP_INVAL:
2174 LOG_EXCP("Invalid instruction at " TARGET_FMT_lx "\n", env->nip);
2175 new_msr &= ~((target_ulong)1 << MSR_RI);
2177 new_msr |= (target_ulong)MSR_HVB;
2180 case POWERPC_EXCP_PRIV:
2181 new_msr &= ~((target_ulong)1 << MSR_RI);
2183 new_msr |= (target_ulong)MSR_HVB;
2186 case POWERPC_EXCP_TRAP:
2187 new_msr &= ~((target_ulong)1 << MSR_RI);
2189 new_msr |= (target_ulong)MSR_HVB;
2193 /* Should never occur */
2194 cpu_abort(env, "Invalid program exception %d. Aborting\n",
2199 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
2200 new_msr &= ~((target_ulong)1 << MSR_RI);
2202 new_msr |= (target_ulong)MSR_HVB;
2204 case POWERPC_EXCP_SYSCALL: /* System call exception */
2205 /* NOTE: this is a temporary hack to support graphics OSI
2206 calls from the MOL driver */
2207 /* XXX: To be removed */
2208 if (env->gpr[3] == 0x113724fa && env->gpr[4] == 0x77810f9b &&
2210 if (env->osi_call(env) != 0) {
2211 env->exception_index = POWERPC_EXCP_NONE;
2212 env->error_code = 0;
2217 new_msr &= ~((target_ulong)1 << MSR_RI);
2218 lev = env->error_code;
2219 if (lev == 1 || (lpes0 == 0 && lpes1 == 0))
2220 new_msr |= (target_ulong)MSR_HVB;
2222 case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
2223 new_msr &= ~((target_ulong)1 << MSR_RI);
2225 case POWERPC_EXCP_DECR: /* Decrementer exception */
2226 new_msr &= ~((target_ulong)1 << MSR_RI);
2228 new_msr |= (target_ulong)MSR_HVB;
2230 case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
2232 LOG_EXCP("FIT exception\n");
2233 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2235 case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
2236 LOG_EXCP("WDT exception\n");
2237 switch (excp_model) {
2238 case POWERPC_EXCP_BOOKE:
2239 srr0 = SPR_BOOKE_CSRR0;
2240 srr1 = SPR_BOOKE_CSRR1;
2245 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2247 case POWERPC_EXCP_DTLB: /* Data TLB error */
2248 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2250 case POWERPC_EXCP_ITLB: /* Instruction TLB error */
2251 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2253 case POWERPC_EXCP_DEBUG: /* Debug interrupt */
2254 switch (excp_model) {
2255 case POWERPC_EXCP_BOOKE:
2256 srr0 = SPR_BOOKE_DSRR0;
2257 srr1 = SPR_BOOKE_DSRR1;
2258 asrr0 = SPR_BOOKE_CSRR0;
2259 asrr1 = SPR_BOOKE_CSRR1;
2265 cpu_abort(env, "Debug exception is not implemented yet !\n");
2267 case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavailable */
2268 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2270 case POWERPC_EXCP_EFPDI: /* Embedded floating-point data interrupt */
2272 cpu_abort(env, "Embedded floating point data exception "
2273 "is not implemented yet !\n");
2275 case POWERPC_EXCP_EFPRI: /* Embedded floating-point round interrupt */
2277 cpu_abort(env, "Embedded floating point round exception "
2278 "is not implemented yet !\n");
2280 case POWERPC_EXCP_EPERFM: /* Embedded performance monitor interrupt */
2281 new_msr &= ~((target_ulong)1 << MSR_RI);
2284 "Performance counter exception is not implemented yet !\n");
2286 case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
2289 "Embedded doorbell interrupt is not implemented yet !\n");
2291 case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
2292 switch (excp_model) {
2293 case POWERPC_EXCP_BOOKE:
2294 srr0 = SPR_BOOKE_CSRR0;
2295 srr1 = SPR_BOOKE_CSRR1;
2301 cpu_abort(env, "Embedded doorbell critical interrupt "
2302 "is not implemented yet !\n");
2304 case POWERPC_EXCP_RESET: /* System reset exception */
2305 new_msr &= ~((target_ulong)1 << MSR_RI);
2307 /* XXX: find a suitable condition to enable the hypervisor mode */
2308 new_msr |= (target_ulong)MSR_HVB;
2311 case POWERPC_EXCP_DSEG: /* Data segment exception */
2312 new_msr &= ~((target_ulong)1 << MSR_RI);
2314 new_msr |= (target_ulong)MSR_HVB;
2316 case POWERPC_EXCP_ISEG: /* Instruction segment exception */
2317 new_msr &= ~((target_ulong)1 << MSR_RI);
2319 new_msr |= (target_ulong)MSR_HVB;
2321 case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
2324 new_msr |= (target_ulong)MSR_HVB;
2326 case POWERPC_EXCP_TRACE: /* Trace exception */
2327 new_msr &= ~((target_ulong)1 << MSR_RI);
2329 new_msr |= (target_ulong)MSR_HVB;
2331 case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
2334 new_msr |= (target_ulong)MSR_HVB;
2336 case POWERPC_EXCP_HISI: /* Hypervisor instruction storage exception */
2339 new_msr |= (target_ulong)MSR_HVB;
2341 case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
2344 new_msr |= (target_ulong)MSR_HVB;
2346 case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment exception */
2349 new_msr |= (target_ulong)MSR_HVB;
2351 case POWERPC_EXCP_VPU: /* Vector unavailable exception */
2352 new_msr &= ~((target_ulong)1 << MSR_RI);
2354 new_msr |= (target_ulong)MSR_HVB;
2356 case POWERPC_EXCP_PIT: /* Programmable interval timer interrupt */
2357 LOG_EXCP("PIT exception\n");
2358 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2360 case POWERPC_EXCP_IO: /* IO error exception */
2362 cpu_abort(env, "601 IO error exception is not implemented yet !\n");
2364 case POWERPC_EXCP_RUNM: /* Run mode exception */
2366 cpu_abort(env, "601 run mode exception is not implemented yet !\n");
2368 case POWERPC_EXCP_EMUL: /* Emulation trap exception */
2370 cpu_abort(env, "602 emulation trap exception "
2371 "is not implemented yet !\n");
2373 case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
2374 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2375 if (lpes1 == 0) /* XXX: check this */
2376 new_msr |= (target_ulong)MSR_HVB;
2377 switch (excp_model) {
2378 case POWERPC_EXCP_602:
2379 case POWERPC_EXCP_603:
2380 case POWERPC_EXCP_603E:
2381 case POWERPC_EXCP_G2:
2383 case POWERPC_EXCP_7x5:
2385 case POWERPC_EXCP_74xx:
2388 cpu_abort(env, "Invalid instruction TLB miss exception\n");
2392 case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
2393 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2394 if (lpes1 == 0) /* XXX: check this */
2395 new_msr |= (target_ulong)MSR_HVB;
2396 switch (excp_model) {
2397 case POWERPC_EXCP_602:
2398 case POWERPC_EXCP_603:
2399 case POWERPC_EXCP_603E:
2400 case POWERPC_EXCP_G2:
2402 case POWERPC_EXCP_7x5:
2404 case POWERPC_EXCP_74xx:
2407 cpu_abort(env, "Invalid data load TLB miss exception\n");
2411 case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
2412 new_msr &= ~((target_ulong)1 << MSR_RI); /* XXX: check this */
2413 if (lpes1 == 0) /* XXX: check this */
2414 new_msr |= (target_ulong)MSR_HVB;
2415 switch (excp_model) {
2416 case POWERPC_EXCP_602:
2417 case POWERPC_EXCP_603:
2418 case POWERPC_EXCP_603E:
2419 case POWERPC_EXCP_G2:
2421 /* Swap temporary saved registers with GPRs */
2422 if (!(new_msr & ((target_ulong)1 << MSR_TGPR))) {
2423 new_msr |= (target_ulong)1 << MSR_TGPR;
2424 hreg_swap_gpr_tgpr(env);
2427 case POWERPC_EXCP_7x5:
2429 #if defined (DEBUG_SOFTWARE_TLB)
2430 if (qemu_log_enabled()) {
2432 target_ulong *miss, *cmp;
2434 if (excp == POWERPC_EXCP_IFTLB) {
2437 miss = &env->spr[SPR_IMISS];
2438 cmp = &env->spr[SPR_ICMP];
2440 if (excp == POWERPC_EXCP_DLTLB)
2445 miss = &env->spr[SPR_DMISS];
2446 cmp = &env->spr[SPR_DCMP];
2448 qemu_log("6xx %sTLB miss: %cM " TARGET_FMT_lx " %cC "
2449 TARGET_FMT_lx " H1 " TARGET_FMT_lx " H2 "
2450 TARGET_FMT_lx " %08x\n", es, en, *miss, en, *cmp,
2451 env->spr[SPR_HASH1], env->spr[SPR_HASH2],
2455 msr |= env->crf[0] << 28;
2456 msr |= env->error_code; /* key, D/I, S/L bits */
2457 /* Set way using a LRU mechanism */
2458 msr |= ((env->last_way + 1) & (env->nb_ways - 1)) << 17;
2460 case POWERPC_EXCP_74xx:
2462 #if defined (DEBUG_SOFTWARE_TLB)
2463 if (qemu_log_enabled()) {
2465 target_ulong *miss, *cmp;
2467 if (excp == POWERPC_EXCP_IFTLB) {
2470 miss = &env->spr[SPR_TLBMISS];
2471 cmp = &env->spr[SPR_PTEHI];
2473 if (excp == POWERPC_EXCP_DLTLB)
2478 miss = &env->spr[SPR_TLBMISS];
2479 cmp = &env->spr[SPR_PTEHI];
2481 qemu_log("74xx %sTLB miss: %cM " TARGET_FMT_lx " %cC "
2482 TARGET_FMT_lx " %08x\n", es, en, *miss, en, *cmp,
2486 msr |= env->error_code; /* key bit */
2489 cpu_abort(env, "Invalid data store TLB miss exception\n");
2493 case POWERPC_EXCP_FPA: /* Floating-point assist exception */
2495 cpu_abort(env, "Floating point assist exception "
2496 "is not implemented yet !\n");
2498 case POWERPC_EXCP_DABR: /* Data address breakpoint */
2500 cpu_abort(env, "DABR exception is not implemented yet !\n");
2502 case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
2504 cpu_abort(env, "IABR exception is not implemented yet !\n");
2506 case POWERPC_EXCP_SMI: /* System management interrupt */
2508 cpu_abort(env, "SMI exception is not implemented yet !\n");
2510 case POWERPC_EXCP_THERM: /* Thermal interrupt */
2512 cpu_abort(env, "Thermal management exception "
2513 "is not implemented yet !\n");
2515 case POWERPC_EXCP_PERFM: /* Embedded performance monitor interrupt */
2516 new_msr &= ~((target_ulong)1 << MSR_RI);
2518 new_msr |= (target_ulong)MSR_HVB;
2521 "Performance counter exception is not implemented yet !\n");
2523 case POWERPC_EXCP_VPUA: /* Vector assist exception */
2525 cpu_abort(env, "VPU assist exception is not implemented yet !\n");
2527 case POWERPC_EXCP_SOFTP: /* Soft patch exception */
2530 "970 soft-patch exception is not implemented yet !\n");
2532 case POWERPC_EXCP_MAINT: /* Maintenance exception */
2535 "970 maintenance exception is not implemented yet !\n");
2537 case POWERPC_EXCP_MEXTBR: /* Maskable external breakpoint */
2539 cpu_abort(env, "Maskable external exception "
2540 "is not implemented yet !\n");
2542 case POWERPC_EXCP_NMEXTBR: /* Non maskable external breakpoint */
2544 cpu_abort(env, "Non maskable external exception "
2545 "is not implemented yet !\n");
2549 cpu_abort(env, "Invalid PowerPC exception %d. Aborting\n", excp);
2552 /* save current instruction location */
2553 env->spr[srr0] = env->nip - 4;
2556 /* save next instruction location */
2557 env->spr[srr0] = env->nip;
2561 env->spr[srr1] = msr;
2562 /* If any alternate SRR register are defined, duplicate saved values */
2564 env->spr[asrr0] = env->spr[srr0];
2566 env->spr[asrr1] = env->spr[srr1];
2567 /* If we disactivated any translation, flush TLBs */
2568 if (new_msr & ((1 << MSR_IR) | (1 << MSR_DR)))
2570 /* reload MSR with correct bits */
2571 new_msr &= ~((target_ulong)1 << MSR_EE);
2572 new_msr &= ~((target_ulong)1 << MSR_PR);
2573 new_msr &= ~((target_ulong)1 << MSR_FP);
2574 new_msr &= ~((target_ulong)1 << MSR_FE0);
2575 new_msr &= ~((target_ulong)1 << MSR_SE);
2576 new_msr &= ~((target_ulong)1 << MSR_BE);
2577 new_msr &= ~((target_ulong)1 << MSR_FE1);
2578 new_msr &= ~((target_ulong)1 << MSR_IR);
2579 new_msr &= ~((target_ulong)1 << MSR_DR);
2580 #if 0 /* Fix this: not on all targets */
2581 new_msr &= ~((target_ulong)1 << MSR_PMM);
2583 new_msr &= ~((target_ulong)1 << MSR_LE);
2585 new_msr |= (target_ulong)1 << MSR_LE;
2587 new_msr &= ~((target_ulong)1 << MSR_LE);
2588 /* Jump to handler */
2589 vector = env->excp_vectors[excp];
2590 if (vector == (target_ulong)-1ULL) {
2591 cpu_abort(env, "Raised an exception without defined vector %d\n",
2594 vector |= env->excp_prefix;
2595 #if defined(TARGET_PPC64)
2596 if (excp_model == POWERPC_EXCP_BOOKE) {
2598 new_msr &= ~((target_ulong)1 << MSR_CM);
2599 vector = (uint32_t)vector;
2601 new_msr |= (target_ulong)1 << MSR_CM;
2604 if (!msr_isf && !(env->mmu_model & POWERPC_MMU_64)) {
2605 new_msr &= ~((target_ulong)1 << MSR_SF);
2606 vector = (uint32_t)vector;
2608 new_msr |= (target_ulong)1 << MSR_SF;
2612 /* XXX: we don't use hreg_store_msr here as already have treated
2613 * any special case that could occur. Just store MSR and update hflags
2615 env->msr = new_msr & env->msr_mask;
2616 hreg_compute_hflags(env);
2618 /* Reset exception state */
2619 env->exception_index = POWERPC_EXCP_NONE;
2620 env->error_code = 0;
2623 void do_interrupt (CPUState *env)
2625 powerpc_excp(env, env->excp_model, env->exception_index);
2628 void ppc_hw_interrupt (CPUPPCState *env)
2633 qemu_log_mask(CPU_LOG_INT, "%s: %p pending %08x req %08x me %d ee %d\n",
2634 __func__, env, env->pending_interrupts,
2635 env->interrupt_request, (int)msr_me, (int)msr_ee);
2637 /* External reset */
2638 if (env->pending_interrupts & (1 << PPC_INTERRUPT_RESET)) {
2639 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_RESET);
2640 powerpc_excp(env, env->excp_model, POWERPC_EXCP_RESET);
2643 /* Machine check exception */
2644 if (env->pending_interrupts & (1 << PPC_INTERRUPT_MCK)) {
2645 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_MCK);
2646 powerpc_excp(env, env->excp_model, POWERPC_EXCP_MCHECK);
2650 /* External debug exception */
2651 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DEBUG)) {
2652 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DEBUG);
2653 powerpc_excp(env, env->excp_model, POWERPC_EXCP_DEBUG);
2658 /* XXX: find a suitable condition to enable the hypervisor mode */
2659 hdice = env->spr[SPR_LPCR] & 1;
2663 if ((msr_ee != 0 || msr_hv == 0 || msr_pr != 0) && hdice != 0) {
2664 /* Hypervisor decrementer exception */
2665 if (env->pending_interrupts & (1 << PPC_INTERRUPT_HDECR)) {
2666 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_HDECR);
2667 powerpc_excp(env, env->excp_model, POWERPC_EXCP_HDECR);
2672 /* External critical interrupt */
2673 if (env->pending_interrupts & (1 << PPC_INTERRUPT_CEXT)) {
2674 /* Taking a critical external interrupt does not clear the external
2675 * critical interrupt status
2678 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_CEXT);
2680 powerpc_excp(env, env->excp_model, POWERPC_EXCP_CRITICAL);
2685 /* Watchdog timer on embedded PowerPC */
2686 if (env->pending_interrupts & (1 << PPC_INTERRUPT_WDT)) {
2687 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_WDT);
2688 powerpc_excp(env, env->excp_model, POWERPC_EXCP_WDT);
2691 if (env->pending_interrupts & (1 << PPC_INTERRUPT_CDOORBELL)) {
2692 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_CDOORBELL);
2693 powerpc_excp(env, env->excp_model, POWERPC_EXCP_DOORCI);
2696 /* Fixed interval timer on embedded PowerPC */
2697 if (env->pending_interrupts & (1 << PPC_INTERRUPT_FIT)) {
2698 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_FIT);
2699 powerpc_excp(env, env->excp_model, POWERPC_EXCP_FIT);
2702 /* Programmable interval timer on embedded PowerPC */
2703 if (env->pending_interrupts & (1 << PPC_INTERRUPT_PIT)) {
2704 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PIT);
2705 powerpc_excp(env, env->excp_model, POWERPC_EXCP_PIT);
2708 /* Decrementer exception */
2709 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DECR)) {
2710 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DECR);
2711 powerpc_excp(env, env->excp_model, POWERPC_EXCP_DECR);
2714 /* External interrupt */
2715 if (env->pending_interrupts & (1 << PPC_INTERRUPT_EXT)) {
2716 /* Taking an external interrupt does not clear the external
2720 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_EXT);
2722 powerpc_excp(env, env->excp_model, POWERPC_EXCP_EXTERNAL);
2725 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DOORBELL)) {
2726 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DOORBELL);
2727 powerpc_excp(env, env->excp_model, POWERPC_EXCP_DOORI);
2730 if (env->pending_interrupts & (1 << PPC_INTERRUPT_PERFM)) {
2731 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PERFM);
2732 powerpc_excp(env, env->excp_model, POWERPC_EXCP_PERFM);
2735 /* Thermal interrupt */
2736 if (env->pending_interrupts & (1 << PPC_INTERRUPT_THERM)) {
2737 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_THERM);
2738 powerpc_excp(env, env->excp_model, POWERPC_EXCP_THERM);
2743 #endif /* !CONFIG_USER_ONLY */
2745 void cpu_dump_rfi (target_ulong RA, target_ulong msr)
2747 qemu_log("Return from exception at " TARGET_FMT_lx " with flags "
2748 TARGET_FMT_lx "\n", RA, msr);
2751 void cpu_ppc_reset (void *opaque)
2753 CPUPPCState *env = opaque;
2756 if (qemu_loglevel_mask(CPU_LOG_RESET)) {
2757 qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
2758 log_cpu_state(env, 0);
2761 msr = (target_ulong)0;
2763 /* XXX: find a suitable condition to enable the hypervisor mode */
2764 msr |= (target_ulong)MSR_HVB;
2766 msr |= (target_ulong)0 << MSR_AP; /* TO BE CHECKED */
2767 msr |= (target_ulong)0 << MSR_SA; /* TO BE CHECKED */
2768 msr |= (target_ulong)1 << MSR_EP;
2769 #if defined (DO_SINGLE_STEP) && 0
2770 /* Single step trace mode */
2771 msr |= (target_ulong)1 << MSR_SE;
2772 msr |= (target_ulong)1 << MSR_BE;
2774 #if defined(CONFIG_USER_ONLY)
2775 msr |= (target_ulong)1 << MSR_FP; /* Allow floating point usage */
2776 msr |= (target_ulong)1 << MSR_VR; /* Allow altivec usage */
2777 msr |= (target_ulong)1 << MSR_SPE; /* Allow SPE usage */
2778 msr |= (target_ulong)1 << MSR_PR;
2780 env->excp_prefix = env->hreset_excp_prefix;
2781 env->nip = env->hreset_vector | env->excp_prefix;
2782 if (env->mmu_model != POWERPC_MMU_REAL)
2783 ppc_tlb_invalidate_all(env);
2785 env->msr = msr & env->msr_mask;
2786 #if defined(TARGET_PPC64)
2787 if (env->mmu_model & POWERPC_MMU_64)
2788 env->msr |= (1ULL << MSR_SF);
2790 hreg_compute_hflags(env);
2791 env->reserve_addr = (target_ulong)-1ULL;
2792 /* Be sure no exception or interrupt is pending */
2793 env->pending_interrupts = 0;
2794 env->exception_index = POWERPC_EXCP_NONE;
2795 env->error_code = 0;
2796 /* Flush all TLBs */
2800 CPUPPCState *cpu_ppc_init (const char *cpu_model)
2803 const ppc_def_t *def;
2805 def = cpu_ppc_find_by_name(cpu_model);
2809 env = qemu_mallocz(sizeof(CPUPPCState));
2811 ppc_translate_init();
2812 env->cpu_model_str = cpu_model;
2813 cpu_ppc_register_internal(env, def);
2816 qemu_init_vcpu(env);
2821 void cpu_ppc_close (CPUPPCState *env)
2823 /* Should also remove all opcode tables... */