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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
30 #include "helper_regs.h"
31 #include "qemu-common.h"
37 //#define DEBUG_SOFTWARE_TLB
38 //#define DUMP_PAGE_TABLES
39 //#define DEBUG_EXCEPTIONS
40 //#define FLUSH_ALL_TLBS
43 # define LOG_MMU(...) qemu_log(__VA_ARGS__)
44 # define LOG_MMU_STATE(env) log_cpu_state((env), 0)
46 # define LOG_MMU(...) do { } while (0)
47 # define LOG_MMU_STATE(...) do { } while (0)
51 #ifdef DEBUG_SOFTWARE_TLB
52 # define LOG_SWTLB(...) qemu_log(__VA_ARGS__)
54 # define LOG_SWTLB(...) do { } while (0)
58 # define LOG_BATS(...) qemu_log(__VA_ARGS__)
60 # define LOG_BATS(...) do { } while (0)
64 # define LOG_SLB(...) qemu_log(__VA_ARGS__)
66 # define LOG_SLB(...) do { } while (0)
69 #ifdef DEBUG_EXCEPTIONS
70 # define LOG_EXCP(...) qemu_log(__VA_ARGS__)
72 # define LOG_EXCP(...) do { } while (0)
76 /*****************************************************************************/
77 /* PowerPC MMU emulation */
79 #if defined(CONFIG_USER_ONLY)
80 int cpu_ppc_handle_mmu_fault (CPUState
*env
, target_ulong address
, int rw
,
81 int mmu_idx
, int is_softmmu
)
83 int exception
, error_code
;
86 exception
= POWERPC_EXCP_ISI
;
87 error_code
= 0x40000000;
89 exception
= POWERPC_EXCP_DSI
;
90 error_code
= 0x40000000;
92 error_code
|= 0x02000000;
93 env
->spr
[SPR_DAR
] = address
;
94 env
->spr
[SPR_DSISR
] = error_code
;
96 env
->exception_index
= exception
;
97 env
->error_code
= error_code
;
102 target_phys_addr_t
cpu_get_phys_page_debug (CPUState
*env
, target_ulong addr
)
108 /* Common routines used by software and hardware TLBs emulation */
109 static always_inline
int pte_is_valid (target_ulong pte0
)
111 return pte0
& 0x80000000 ? 1 : 0;
114 static always_inline
void pte_invalidate (target_ulong
*pte0
)
116 *pte0
&= ~0x80000000;
119 #if defined(TARGET_PPC64)
120 static always_inline
int pte64_is_valid (target_ulong pte0
)
122 return pte0
& 0x0000000000000001ULL
? 1 : 0;
125 static always_inline
void pte64_invalidate (target_ulong
*pte0
)
127 *pte0
&= ~0x0000000000000001ULL
;
131 #define PTE_PTEM_MASK 0x7FFFFFBF
132 #define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B)
133 #if defined(TARGET_PPC64)
134 #define PTE64_PTEM_MASK 0xFFFFFFFFFFFFFF80ULL
135 #define PTE64_CHECK_MASK (TARGET_PAGE_MASK | 0x7F)
138 static always_inline
int pp_check (int key
, int pp
, int nx
)
142 /* Compute access rights */
143 /* When pp is 3/7, the result is undefined. Set it to noaccess */
150 access
|= PAGE_WRITE
;
168 access
= PAGE_READ
| PAGE_WRITE
;
178 static always_inline
int check_prot (int prot
, int rw
, int access_type
)
182 if (access_type
== ACCESS_CODE
) {
183 if (prot
& PAGE_EXEC
)
188 if (prot
& PAGE_WRITE
)
193 if (prot
& PAGE_READ
)
202 static always_inline
int _pte_check (mmu_ctx_t
*ctx
, int is_64b
,
203 target_ulong pte0
, target_ulong pte1
,
204 int h
, int rw
, int type
)
206 target_ulong ptem
, mmask
;
207 int access
, ret
, pteh
, ptev
, pp
;
211 /* Check validity and table match */
212 #if defined(TARGET_PPC64)
214 ptev
= pte64_is_valid(pte0
);
215 pteh
= (pte0
>> 1) & 1;
219 ptev
= pte_is_valid(pte0
);
220 pteh
= (pte0
>> 6) & 1;
222 if (ptev
&& h
== pteh
) {
223 /* Check vsid & api */
224 #if defined(TARGET_PPC64)
226 ptem
= pte0
& PTE64_PTEM_MASK
;
227 mmask
= PTE64_CHECK_MASK
;
228 pp
= (pte1
& 0x00000003) | ((pte1
>> 61) & 0x00000004);
229 ctx
->nx
= (pte1
>> 2) & 1; /* No execute bit */
230 ctx
->nx
|= (pte1
>> 3) & 1; /* Guarded bit */
234 ptem
= pte0
& PTE_PTEM_MASK
;
235 mmask
= PTE_CHECK_MASK
;
236 pp
= pte1
& 0x00000003;
238 if (ptem
== ctx
->ptem
) {
239 if (ctx
->raddr
!= (target_phys_addr_t
)-1ULL) {
240 /* all matches should have equal RPN, WIMG & PP */
241 if ((ctx
->raddr
& mmask
) != (pte1
& mmask
)) {
242 qemu_log("Bad RPN/WIMG/PP\n");
246 /* Compute access rights */
247 access
= pp_check(ctx
->key
, pp
, ctx
->nx
);
248 /* Keep the matching PTE informations */
251 ret
= check_prot(ctx
->prot
, rw
, type
);
254 LOG_MMU("PTE access granted !\n");
256 /* Access right violation */
257 LOG_MMU("PTE access rejected\n");
265 static always_inline
int pte32_check (mmu_ctx_t
*ctx
,
266 target_ulong pte0
, target_ulong pte1
,
267 int h
, int rw
, int type
)
269 return _pte_check(ctx
, 0, pte0
, pte1
, h
, rw
, type
);
272 #if defined(TARGET_PPC64)
273 static always_inline
int pte64_check (mmu_ctx_t
*ctx
,
274 target_ulong pte0
, target_ulong pte1
,
275 int h
, int rw
, int type
)
277 return _pte_check(ctx
, 1, pte0
, pte1
, h
, rw
, type
);
281 static always_inline
int pte_update_flags (mmu_ctx_t
*ctx
, target_ulong
*pte1p
,
286 /* Update page flags */
287 if (!(*pte1p
& 0x00000100)) {
288 /* Update accessed flag */
289 *pte1p
|= 0x00000100;
292 if (!(*pte1p
& 0x00000080)) {
293 if (rw
== 1 && ret
== 0) {
294 /* Update changed flag */
295 *pte1p
|= 0x00000080;
298 /* Force page fault for first write access */
299 ctx
->prot
&= ~PAGE_WRITE
;
306 /* Software driven TLB helpers */
307 static always_inline
int ppc6xx_tlb_getnum (CPUState
*env
, target_ulong eaddr
,
308 int way
, int is_code
)
312 /* Select TLB num in a way from address */
313 nr
= (eaddr
>> TARGET_PAGE_BITS
) & (env
->tlb_per_way
- 1);
315 nr
+= env
->tlb_per_way
* way
;
316 /* 6xx have separate TLBs for instructions and data */
317 if (is_code
&& env
->id_tlbs
== 1)
323 static always_inline
void ppc6xx_tlb_invalidate_all (CPUState
*env
)
328 //LOG_SWTLB("Invalidate all TLBs\n");
329 /* Invalidate all defined software TLB */
331 if (env
->id_tlbs
== 1)
333 for (nr
= 0; nr
< max
; nr
++) {
334 tlb
= &env
->tlb
[nr
].tlb6
;
335 pte_invalidate(&tlb
->pte0
);
340 static always_inline
void __ppc6xx_tlb_invalidate_virt (CPUState
*env
,
345 #if !defined(FLUSH_ALL_TLBS)
349 /* Invalidate ITLB + DTLB, all ways */
350 for (way
= 0; way
< env
->nb_ways
; way
++) {
351 nr
= ppc6xx_tlb_getnum(env
, eaddr
, way
, is_code
);
352 tlb
= &env
->tlb
[nr
].tlb6
;
353 if (pte_is_valid(tlb
->pte0
) && (match_epn
== 0 || eaddr
== tlb
->EPN
)) {
354 LOG_SWTLB("TLB invalidate %d/%d " ADDRX
"\n",
355 nr
, env
->nb_tlb
, eaddr
);
356 pte_invalidate(&tlb
->pte0
);
357 tlb_flush_page(env
, tlb
->EPN
);
361 /* XXX: PowerPC specification say this is valid as well */
362 ppc6xx_tlb_invalidate_all(env
);
366 static always_inline
void ppc6xx_tlb_invalidate_virt (CPUState
*env
,
370 __ppc6xx_tlb_invalidate_virt(env
, eaddr
, is_code
, 0);
373 void ppc6xx_tlb_store (CPUState
*env
, target_ulong EPN
, int way
, int is_code
,
374 target_ulong pte0
, target_ulong pte1
)
379 nr
= ppc6xx_tlb_getnum(env
, EPN
, way
, is_code
);
380 tlb
= &env
->tlb
[nr
].tlb6
;
381 LOG_SWTLB("Set TLB %d/%d EPN " ADDRX
" PTE0 " ADDRX
382 " PTE1 " ADDRX
"\n", nr
, env
->nb_tlb
, EPN
, pte0
, pte1
);
383 /* Invalidate any pending reference in Qemu for this virtual address */
384 __ppc6xx_tlb_invalidate_virt(env
, EPN
, is_code
, 1);
388 /* Store last way for LRU mechanism */
392 static always_inline
int ppc6xx_tlb_check (CPUState
*env
, mmu_ctx_t
*ctx
,
393 target_ulong eaddr
, int rw
,
401 ret
= -1; /* No TLB found */
402 for (way
= 0; way
< env
->nb_ways
; way
++) {
403 nr
= ppc6xx_tlb_getnum(env
, eaddr
, way
,
404 access_type
== ACCESS_CODE
? 1 : 0);
405 tlb
= &env
->tlb
[nr
].tlb6
;
406 /* This test "emulates" the PTE index match for hardware TLBs */
407 if ((eaddr
& TARGET_PAGE_MASK
) != tlb
->EPN
) {
408 LOG_SWTLB("TLB %d/%d %s [" ADDRX
" " ADDRX
411 pte_is_valid(tlb
->pte0
) ? "valid" : "inval",
412 tlb
->EPN
, tlb
->EPN
+ TARGET_PAGE_SIZE
, eaddr
);
415 LOG_SWTLB("TLB %d/%d %s " ADDRX
" <> " ADDRX
" " ADDRX
418 pte_is_valid(tlb
->pte0
) ? "valid" : "inval",
419 tlb
->EPN
, eaddr
, tlb
->pte1
,
420 rw
? 'S' : 'L', access_type
== ACCESS_CODE
? 'I' : 'D');
421 switch (pte32_check(ctx
, tlb
->pte0
, tlb
->pte1
, 0, rw
, access_type
)) {
423 /* TLB inconsistency */
426 /* Access violation */
436 /* XXX: we should go on looping to check all TLBs consistency
437 * but we can speed-up the whole thing as the
438 * result would be undefined if TLBs are not consistent.
447 LOG_SWTLB("found TLB at addr " PADDRX
" prot=%01x ret=%d\n",
448 ctx
->raddr
& TARGET_PAGE_MASK
, ctx
->prot
, ret
);
449 /* Update page flags */
450 pte_update_flags(ctx
, &env
->tlb
[best
].tlb6
.pte1
, ret
, rw
);
456 /* Perform BAT hit & translation */
457 static always_inline
void bat_size_prot (CPUState
*env
, target_ulong
*blp
,
458 int *validp
, int *protp
,
459 target_ulong
*BATu
, target_ulong
*BATl
)
464 bl
= (*BATu
& 0x00001FFC) << 15;
467 if (((msr_pr
== 0) && (*BATu
& 0x00000002)) ||
468 ((msr_pr
!= 0) && (*BATu
& 0x00000001))) {
470 pp
= *BATl
& 0x00000003;
472 prot
= PAGE_READ
| PAGE_EXEC
;
482 static always_inline
void bat_601_size_prot (CPUState
*env
,target_ulong
*blp
,
483 int *validp
, int *protp
,
488 int key
, pp
, valid
, prot
;
490 bl
= (*BATl
& 0x0000003F) << 17;
491 LOG_BATS("b %02x ==> bl " ADDRX
" msk " ADDRX
"\n",
492 (uint8_t)(*BATl
& 0x0000003F), bl
, ~bl
);
494 valid
= (*BATl
>> 6) & 1;
496 pp
= *BATu
& 0x00000003;
498 key
= (*BATu
>> 3) & 1;
500 key
= (*BATu
>> 2) & 1;
501 prot
= pp_check(key
, pp
, 0);
508 static always_inline
int get_bat (CPUState
*env
, mmu_ctx_t
*ctx
,
509 target_ulong
virtual, int rw
, int type
)
511 target_ulong
*BATlt
, *BATut
, *BATu
, *BATl
;
512 target_ulong base
, BEPIl
, BEPIu
, bl
;
516 LOG_BATS("%s: %cBAT v " ADDRX
"\n", __func__
,
517 type
== ACCESS_CODE
? 'I' : 'D', virtual);
520 BATlt
= env
->IBAT
[1];
521 BATut
= env
->IBAT
[0];
524 BATlt
= env
->DBAT
[1];
525 BATut
= env
->DBAT
[0];
528 base
= virtual & 0xFFFC0000;
529 for (i
= 0; i
< env
->nb_BATs
; i
++) {
532 BEPIu
= *BATu
& 0xF0000000;
533 BEPIl
= *BATu
& 0x0FFE0000;
534 if (unlikely(env
->mmu_model
== POWERPC_MMU_601
)) {
535 bat_601_size_prot(env
, &bl
, &valid
, &prot
, BATu
, BATl
);
537 bat_size_prot(env
, &bl
, &valid
, &prot
, BATu
, BATl
);
539 LOG_BATS("%s: %cBAT%d v " ADDRX
" BATu " ADDRX
540 " BATl " ADDRX
"\n", __func__
,
541 type
== ACCESS_CODE
? 'I' : 'D', i
, virtual, *BATu
, *BATl
);
542 if ((virtual & 0xF0000000) == BEPIu
&&
543 ((virtual & 0x0FFE0000) & ~bl
) == BEPIl
) {
546 /* Get physical address */
547 ctx
->raddr
= (*BATl
& 0xF0000000) |
548 ((virtual & 0x0FFE0000 & bl
) | (*BATl
& 0x0FFE0000)) |
549 (virtual & 0x0001F000);
550 /* Compute access rights */
552 ret
= check_prot(ctx
->prot
, rw
, type
);
554 LOG_BATS("BAT %d match: r " PADDRX
" prot=%c%c\n",
555 i
, ctx
->raddr
, ctx
->prot
& PAGE_READ
? 'R' : '-',
556 ctx
->prot
& PAGE_WRITE
? 'W' : '-');
562 #if defined(DEBUG_BATS)
564 QEMU_LOG0("no BAT match for " ADDRX
":\n", virtual);
565 for (i
= 0; i
< 4; i
++) {
568 BEPIu
= *BATu
& 0xF0000000;
569 BEPIl
= *BATu
& 0x0FFE0000;
570 bl
= (*BATu
& 0x00001FFC) << 15;
571 QEMU_LOG0("%s: %cBAT%d v " ADDRX
" BATu " ADDRX
572 " BATl " ADDRX
" \n\t" ADDRX
" " ADDRX
" " ADDRX
"\n",
573 __func__
, type
== ACCESS_CODE
? 'I' : 'D', i
, virtual,
574 *BATu
, *BATl
, BEPIu
, BEPIl
, bl
);
583 /* PTE table lookup */
584 static always_inline
int _find_pte (mmu_ctx_t
*ctx
, int is_64b
, int h
,
586 int target_page_bits
)
588 target_ulong base
, pte0
, pte1
;
592 ret
= -1; /* No entry found */
593 base
= ctx
->pg_addr
[h
];
594 for (i
= 0; i
< 8; i
++) {
595 #if defined(TARGET_PPC64)
597 pte0
= ldq_phys(base
+ (i
* 16));
598 pte1
= ldq_phys(base
+ (i
* 16) + 8);
600 /* We have a TLB that saves 4K pages, so let's
601 * split a huge page to 4k chunks */
602 if (target_page_bits
!= TARGET_PAGE_BITS
)
603 pte1
|= (ctx
->eaddr
& (( 1 << target_page_bits
) - 1))
606 r
= pte64_check(ctx
, pte0
, pte1
, h
, rw
, type
);
607 LOG_MMU("Load pte from " ADDRX
" => " ADDRX
" " ADDRX
608 " %d %d %d " ADDRX
"\n",
609 base
+ (i
* 16), pte0
, pte1
,
610 (int)(pte0
& 1), h
, (int)((pte0
>> 1) & 1),
615 pte0
= ldl_phys(base
+ (i
* 8));
616 pte1
= ldl_phys(base
+ (i
* 8) + 4);
617 r
= pte32_check(ctx
, pte0
, pte1
, h
, rw
, type
);
618 LOG_MMU("Load pte from " ADDRX
" => " ADDRX
" " ADDRX
619 " %d %d %d " ADDRX
"\n",
620 base
+ (i
* 8), pte0
, pte1
,
621 (int)(pte0
>> 31), h
, (int)((pte0
>> 6) & 1),
626 /* PTE inconsistency */
629 /* Access violation */
639 /* XXX: we should go on looping to check all PTEs consistency
640 * but if we can speed-up the whole thing as the
641 * result would be undefined if PTEs are not consistent.
650 LOG_MMU("found PTE at addr " PADDRX
" prot=%01x ret=%d\n",
651 ctx
->raddr
, ctx
->prot
, ret
);
652 /* Update page flags */
654 if (pte_update_flags(ctx
, &pte1
, ret
, rw
) == 1) {
655 #if defined(TARGET_PPC64)
657 stq_phys_notdirty(base
+ (good
* 16) + 8, pte1
);
661 stl_phys_notdirty(base
+ (good
* 8) + 4, pte1
);
669 static always_inline
int find_pte32 (mmu_ctx_t
*ctx
, int h
, int rw
,
670 int type
, int target_page_bits
)
672 return _find_pte(ctx
, 0, h
, rw
, type
, target_page_bits
);
675 #if defined(TARGET_PPC64)
676 static always_inline
int find_pte64 (mmu_ctx_t
*ctx
, int h
, int rw
,
677 int type
, int target_page_bits
)
679 return _find_pte(ctx
, 1, h
, rw
, type
, target_page_bits
);
683 static always_inline
int find_pte (CPUState
*env
, mmu_ctx_t
*ctx
,
684 int h
, int rw
, int type
,
685 int target_page_bits
)
687 #if defined(TARGET_PPC64)
688 if (env
->mmu_model
& POWERPC_MMU_64
)
689 return find_pte64(ctx
, h
, rw
, type
, target_page_bits
);
692 return find_pte32(ctx
, h
, rw
, type
, target_page_bits
);
695 #if defined(TARGET_PPC64)
696 static ppc_slb_t
*slb_get_entry(CPUPPCState
*env
, int nr
)
698 ppc_slb_t
*retval
= &env
->slb
[nr
];
700 #if 0 // XXX implement bridge mode?
701 if (env
->spr
[SPR_ASR
] & 1) {
702 target_phys_addr_t sr_base
;
704 sr_base
= env
->spr
[SPR_ASR
] & 0xfffffffffffff000;
705 sr_base
+= (12 * nr
);
707 retval
->tmp64
= ldq_phys(sr_base
);
708 retval
->tmp
= ldl_phys(sr_base
+ 8);
715 static void slb_set_entry(CPUPPCState
*env
, int nr
, ppc_slb_t
*slb
)
717 ppc_slb_t
*entry
= &env
->slb
[nr
];
722 entry
->tmp64
= slb
->tmp64
;
723 entry
->tmp
= slb
->tmp
;
726 static always_inline
int slb_is_valid (ppc_slb_t
*slb
)
728 return (int)(slb
->tmp64
& 0x0000000008000000ULL
);
731 static always_inline
void slb_invalidate (ppc_slb_t
*slb
)
733 slb
->tmp64
&= ~0x0000000008000000ULL
;
736 static always_inline
int slb_lookup (CPUPPCState
*env
, target_ulong eaddr
,
738 target_ulong
*page_mask
, int *attr
,
739 int *target_page_bits
)
745 LOG_SLB("%s: eaddr " ADDRX
"\n", __func__
, eaddr
);
746 mask
= 0x0000000000000000ULL
; /* Avoid gcc warning */
747 for (n
= 0; n
< env
->slb_nr
; n
++) {
748 ppc_slb_t
*slb
= slb_get_entry(env
, n
);
750 LOG_SLB("%s: seg %d %016" PRIx64
" %08"
751 PRIx32
"\n", __func__
, n
, slb
->tmp64
, slb
->tmp
);
752 if (slb_is_valid(slb
)) {
753 /* SLB entry is valid */
754 if (slb
->tmp
& 0x8) {
756 mask
= 0xFFFF000000000000ULL
;
757 if (target_page_bits
)
758 *target_page_bits
= 24; // XXX 16M pages?
761 mask
= 0xFFFFFFFFF0000000ULL
;
762 if (target_page_bits
)
763 *target_page_bits
= TARGET_PAGE_BITS
;
765 if ((eaddr
& mask
) == (slb
->tmp64
& mask
)) {
767 *vsid
= ((slb
->tmp64
<< 24) | (slb
->tmp
>> 8)) & 0x0003FFFFFFFFFFFFULL
;
769 *attr
= slb
->tmp
& 0xFF;
779 void ppc_slb_invalidate_all (CPUPPCState
*env
)
781 int n
, do_invalidate
;
784 /* XXX: Warning: slbia never invalidates the first segment */
785 for (n
= 1; n
< env
->slb_nr
; n
++) {
786 ppc_slb_t
*slb
= slb_get_entry(env
, n
);
788 if (slb_is_valid(slb
)) {
790 slb_set_entry(env
, n
, slb
);
791 /* XXX: given the fact that segment size is 256 MB or 1TB,
792 * and we still don't have a tlb_flush_mask(env, n, mask)
793 * in Qemu, we just invalidate all TLBs
802 void ppc_slb_invalidate_one (CPUPPCState
*env
, uint64_t T0
)
804 target_ulong vsid
, page_mask
;
808 n
= slb_lookup(env
, T0
, &vsid
, &page_mask
, &attr
, NULL
);
810 ppc_slb_t
*slb
= slb_get_entry(env
, n
);
812 if (slb_is_valid(slb
)) {
814 slb_set_entry(env
, n
, slb
);
815 /* XXX: given the fact that segment size is 256 MB or 1TB,
816 * and we still don't have a tlb_flush_mask(env, n, mask)
817 * in Qemu, we just invalidate all TLBs
824 target_ulong
ppc_load_slb (CPUPPCState
*env
, int slb_nr
)
827 ppc_slb_t
*slb
= slb_get_entry(env
, slb_nr
);
829 if (slb_is_valid(slb
)) {
830 /* SLB entry is valid */
831 /* Copy SLB bits 62:88 to Rt 37:63 (VSID 23:49) */
832 rt
= slb
->tmp
>> 8; /* 65:88 => 40:63 */
833 rt
|= (slb
->tmp64
& 0x7) << 24; /* 62:64 => 37:39 */
834 /* Copy SLB bits 89:92 to Rt 33:36 (KsKpNL) */
835 rt
|= ((slb
->tmp
>> 4) & 0xF) << 27;
839 LOG_SLB("%s: %016" PRIx64
" %08" PRIx32
" => %d "
840 ADDRX
"\n", __func__
, slb
->tmp64
, slb
->tmp
, slb_nr
, rt
);
845 void ppc_store_slb (CPUPPCState
*env
, target_ulong rb
, target_ulong rs
)
851 int flags
, valid
, slb_nr
;
854 flags
= ((rs
>> 8) & 0xf);
857 valid
= (rb
& (1 << 27));
860 slb
= slb_get_entry(env
, slb_nr
);
861 slb
->tmp64
= (esid
<< 28) | valid
| (vsid
>> 24);
862 slb
->tmp
= (vsid
<< 8) | (flags
<< 3);
864 LOG_SLB("%s: %d " ADDRX
" - " ADDRX
" => %016" PRIx64
865 " %08" PRIx32
"\n", __func__
,
866 slb_nr
, rb
, rs
, tmp64
, tmp
);
868 slb_set_entry(env
, slb_nr
, slb
);
870 #endif /* defined(TARGET_PPC64) */
872 /* Perform segment based translation */
873 static always_inline target_phys_addr_t
get_pgaddr (target_phys_addr_t sdr1
,
875 target_phys_addr_t hash
,
876 target_phys_addr_t mask
)
878 return (sdr1
& ((target_phys_addr_t
)(-1ULL) << sdr_sh
)) | (hash
& mask
);
881 static always_inline
int get_segment (CPUState
*env
, mmu_ctx_t
*ctx
,
882 target_ulong eaddr
, int rw
, int type
)
884 target_phys_addr_t sdr
, hash
, mask
, sdr_mask
, htab_mask
;
885 target_ulong sr
, vsid
, vsid_mask
, pgidx
, page_mask
;
886 #if defined(TARGET_PPC64)
889 int ds
, vsid_sh
, sdr_sh
, pr
, target_page_bits
;
893 #if defined(TARGET_PPC64)
894 if (env
->mmu_model
& POWERPC_MMU_64
) {
895 LOG_MMU("Check SLBs\n");
896 ret
= slb_lookup(env
, eaddr
, &vsid
, &page_mask
, &attr
,
900 ctx
->key
= ((attr
& 0x40) && (pr
!= 0)) ||
901 ((attr
& 0x80) && (pr
== 0)) ? 1 : 0;
903 ctx
->nx
= attr
& 0x10 ? 1 : 0;
905 vsid_mask
= 0x00003FFFFFFFFF80ULL
;
910 #endif /* defined(TARGET_PPC64) */
912 sr
= env
->sr
[eaddr
>> 28];
913 page_mask
= 0x0FFFFFFF;
914 ctx
->key
= (((sr
& 0x20000000) && (pr
!= 0)) ||
915 ((sr
& 0x40000000) && (pr
== 0))) ? 1 : 0;
916 ds
= sr
& 0x80000000 ? 1 : 0;
917 ctx
->nx
= sr
& 0x10000000 ? 1 : 0;
918 vsid
= sr
& 0x00FFFFFF;
919 vsid_mask
= 0x01FFFFC0;
923 target_page_bits
= TARGET_PAGE_BITS
;
924 LOG_MMU("Check segment v=" ADDRX
" %d " ADDRX
925 " nip=" ADDRX
" lr=" ADDRX
" ir=%d dr=%d pr=%d %d t=%d\n",
926 eaddr
, (int)(eaddr
>> 28), sr
, env
->nip
,
927 env
->lr
, (int)msr_ir
, (int)msr_dr
, pr
!= 0 ? 1 : 0,
930 LOG_MMU("pte segment: key=%d ds %d nx %d vsid " ADDRX
"\n",
931 ctx
->key
, ds
, ctx
->nx
, vsid
);
934 /* Check if instruction fetch is allowed, if needed */
935 if (type
!= ACCESS_CODE
|| ctx
->nx
== 0) {
936 /* Page address translation */
937 /* Primary table address */
939 pgidx
= (eaddr
& page_mask
) >> target_page_bits
;
940 #if defined(TARGET_PPC64)
941 if (env
->mmu_model
& POWERPC_MMU_64
) {
942 htab_mask
= 0x0FFFFFFF >> (28 - (sdr
& 0x1F));
943 /* XXX: this is false for 1 TB segments */
944 hash
= ((vsid
^ pgidx
) << vsid_sh
) & vsid_mask
;
948 htab_mask
= sdr
& 0x000001FF;
949 hash
= ((vsid
^ pgidx
) << vsid_sh
) & vsid_mask
;
951 mask
= (htab_mask
<< sdr_sh
) | sdr_mask
;
952 LOG_MMU("sdr " PADDRX
" sh %d hash " PADDRX
953 " mask " PADDRX
" " ADDRX
"\n",
954 sdr
, sdr_sh
, hash
, mask
, page_mask
);
955 ctx
->pg_addr
[0] = get_pgaddr(sdr
, sdr_sh
, hash
, mask
);
956 /* Secondary table address */
957 hash
= (~hash
) & vsid_mask
;
958 LOG_MMU("sdr " PADDRX
" sh %d hash " PADDRX
959 " mask " PADDRX
"\n",
960 sdr
, sdr_sh
, hash
, mask
);
961 ctx
->pg_addr
[1] = get_pgaddr(sdr
, sdr_sh
, hash
, mask
);
962 #if defined(TARGET_PPC64)
963 if (env
->mmu_model
& POWERPC_MMU_64
) {
964 /* Only 5 bits of the page index are used in the AVPN */
965 if (target_page_bits
> 23) {
966 ctx
->ptem
= (vsid
<< 12) |
967 ((pgidx
<< (target_page_bits
- 16)) & 0xF80);
969 ctx
->ptem
= (vsid
<< 12) | ((pgidx
>> 4) & 0x0F80);
974 ctx
->ptem
= (vsid
<< 7) | (pgidx
>> 10);
976 /* Initialize real address with an invalid value */
977 ctx
->raddr
= (target_phys_addr_t
)-1ULL;
978 if (unlikely(env
->mmu_model
== POWERPC_MMU_SOFT_6xx
||
979 env
->mmu_model
== POWERPC_MMU_SOFT_74xx
)) {
980 /* Software TLB search */
981 ret
= ppc6xx_tlb_check(env
, ctx
, eaddr
, rw
, type
);
983 LOG_MMU("0 sdr1=" PADDRX
" vsid=" ADDRX
" "
984 "api=" ADDRX
" hash=" PADDRX
985 " pg_addr=" PADDRX
"\n",
986 sdr
, vsid
, pgidx
, hash
, ctx
->pg_addr
[0]);
987 /* Primary table lookup */
988 ret
= find_pte(env
, ctx
, 0, rw
, type
, target_page_bits
);
990 /* Secondary table lookup */
991 if (eaddr
!= 0xEFFFFFFF)
992 LOG_MMU("1 sdr1=" PADDRX
" vsid=" ADDRX
" "
993 "api=" ADDRX
" hash=" PADDRX
994 " pg_addr=" PADDRX
"\n",
995 sdr
, vsid
, pgidx
, hash
, ctx
->pg_addr
[1]);
996 ret2
= find_pte(env
, ctx
, 1, rw
, type
,
1002 #if defined (DUMP_PAGE_TABLES)
1003 if (qemu_log_enabled()) {
1004 target_phys_addr_t curaddr
;
1005 uint32_t a0
, a1
, a2
, a3
;
1006 qemu_log("Page table: " PADDRX
" len " PADDRX
"\n",
1008 for (curaddr
= sdr
; curaddr
< (sdr
+ mask
+ 0x80);
1010 a0
= ldl_phys(curaddr
);
1011 a1
= ldl_phys(curaddr
+ 4);
1012 a2
= ldl_phys(curaddr
+ 8);
1013 a3
= ldl_phys(curaddr
+ 12);
1014 if (a0
!= 0 || a1
!= 0 || a2
!= 0 || a3
!= 0) {
1015 qemu_log(PADDRX
": %08x %08x %08x %08x\n",
1016 curaddr
, a0
, a1
, a2
, a3
);
1022 LOG_MMU("No access allowed\n");
1026 LOG_MMU("direct store...\n");
1027 /* Direct-store segment : absolutely *BUGGY* for now */
1030 /* Integer load/store : only access allowed */
1033 /* No code fetch is allowed in direct-store areas */
1036 /* Floating point load/store */
1039 /* lwarx, ldarx or srwcx. */
1042 /* dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi */
1043 /* Should make the instruction do no-op.
1044 * As it already do no-op, it's quite easy :-)
1049 /* eciwx or ecowx */
1052 qemu_log("ERROR: instruction should not need "
1053 "address translation\n");
1056 if ((rw
== 1 || ctx
->key
!= 1) && (rw
== 0 || ctx
->key
!= 0)) {
1067 /* Generic TLB check function for embedded PowerPC implementations */
1068 static always_inline
int ppcemb_tlb_check (CPUState
*env
, ppcemb_tlb_t
*tlb
,
1069 target_phys_addr_t
*raddrp
,
1070 target_ulong address
,
1071 uint32_t pid
, int ext
, int i
)
1075 /* Check valid flag */
1076 if (!(tlb
->prot
& PAGE_VALID
)) {
1077 qemu_log("%s: TLB %d not valid\n", __func__
, i
);
1080 mask
= ~(tlb
->size
- 1);
1081 LOG_SWTLB("%s: TLB %d address " ADDRX
" PID %u <=> " ADDRX
1083 __func__
, i
, address
, pid
, tlb
->EPN
, mask
, (uint32_t)tlb
->PID
);
1085 if (tlb
->PID
!= 0 && tlb
->PID
!= pid
)
1087 /* Check effective address */
1088 if ((address
& mask
) != tlb
->EPN
)
1090 *raddrp
= (tlb
->RPN
& mask
) | (address
& ~mask
);
1091 #if (TARGET_PHYS_ADDR_BITS >= 36)
1093 /* Extend the physical address to 36 bits */
1094 *raddrp
|= (target_phys_addr_t
)(tlb
->RPN
& 0xF) << 32;
1101 /* Generic TLB search function for PowerPC embedded implementations */
1102 int ppcemb_tlb_search (CPUPPCState
*env
, target_ulong address
, uint32_t pid
)
1105 target_phys_addr_t raddr
;
1108 /* Default return value is no match */
1110 for (i
= 0; i
< env
->nb_tlb
; i
++) {
1111 tlb
= &env
->tlb
[i
].tlbe
;
1112 if (ppcemb_tlb_check(env
, tlb
, &raddr
, address
, pid
, 0, i
) == 0) {
1121 /* Helpers specific to PowerPC 40x implementations */
1122 static always_inline
void ppc4xx_tlb_invalidate_all (CPUState
*env
)
1127 for (i
= 0; i
< env
->nb_tlb
; i
++) {
1128 tlb
= &env
->tlb
[i
].tlbe
;
1129 tlb
->prot
&= ~PAGE_VALID
;
1134 static always_inline
void ppc4xx_tlb_invalidate_virt (CPUState
*env
,
1138 #if !defined(FLUSH_ALL_TLBS)
1140 target_phys_addr_t raddr
;
1141 target_ulong page
, end
;
1144 for (i
= 0; i
< env
->nb_tlb
; i
++) {
1145 tlb
= &env
->tlb
[i
].tlbe
;
1146 if (ppcemb_tlb_check(env
, tlb
, &raddr
, eaddr
, pid
, 0, i
) == 0) {
1147 end
= tlb
->EPN
+ tlb
->size
;
1148 for (page
= tlb
->EPN
; page
< end
; page
+= TARGET_PAGE_SIZE
)
1149 tlb_flush_page(env
, page
);
1150 tlb
->prot
&= ~PAGE_VALID
;
1155 ppc4xx_tlb_invalidate_all(env
);
1159 static int mmu40x_get_physical_address (CPUState
*env
, mmu_ctx_t
*ctx
,
1160 target_ulong address
, int rw
, int access_type
)
1163 target_phys_addr_t raddr
;
1164 int i
, ret
, zsel
, zpr
, pr
;
1167 raddr
= (target_phys_addr_t
)-1ULL;
1169 for (i
= 0; i
< env
->nb_tlb
; i
++) {
1170 tlb
= &env
->tlb
[i
].tlbe
;
1171 if (ppcemb_tlb_check(env
, tlb
, &raddr
, address
,
1172 env
->spr
[SPR_40x_PID
], 0, i
) < 0)
1174 zsel
= (tlb
->attr
>> 4) & 0xF;
1175 zpr
= (env
->spr
[SPR_40x_ZPR
] >> (28 - (2 * zsel
))) & 0x3;
1176 LOG_SWTLB("%s: TLB %d zsel %d zpr %d rw %d attr %08x\n",
1177 __func__
, i
, zsel
, zpr
, rw
, tlb
->attr
);
1178 /* Check execute enable bit */
1185 /* All accesses granted */
1186 ctx
->prot
= PAGE_READ
| PAGE_WRITE
| PAGE_EXEC
;
1198 /* Check from TLB entry */
1199 /* XXX: there is a problem here or in the TLB fill code... */
1200 ctx
->prot
= tlb
->prot
;
1201 ctx
->prot
|= PAGE_EXEC
;
1202 ret
= check_prot(ctx
->prot
, rw
, access_type
);
1207 LOG_SWTLB("%s: access granted " ADDRX
" => " PADDRX
1208 " %d %d\n", __func__
, address
, ctx
->raddr
, ctx
->prot
,
1213 LOG_SWTLB("%s: access refused " ADDRX
" => " PADDRX
1214 " %d %d\n", __func__
, address
, raddr
, ctx
->prot
,
1220 void store_40x_sler (CPUPPCState
*env
, uint32_t val
)
1222 /* XXX: TO BE FIXED */
1223 if (val
!= 0x00000000) {
1224 cpu_abort(env
, "Little-endian regions are not supported by now\n");
1226 env
->spr
[SPR_405_SLER
] = val
;
1229 static int mmubooke_get_physical_address (CPUState
*env
, mmu_ctx_t
*ctx
,
1230 target_ulong address
, int rw
,
1234 target_phys_addr_t raddr
;
1238 raddr
= (target_phys_addr_t
)-1ULL;
1239 for (i
= 0; i
< env
->nb_tlb
; i
++) {
1240 tlb
= &env
->tlb
[i
].tlbe
;
1241 if (ppcemb_tlb_check(env
, tlb
, &raddr
, address
,
1242 env
->spr
[SPR_BOOKE_PID
], 1, i
) < 0)
1245 prot
= tlb
->prot
& 0xF;
1247 prot
= (tlb
->prot
>> 4) & 0xF;
1248 /* Check the address space */
1249 if (access_type
== ACCESS_CODE
) {
1250 if (msr_ir
!= (tlb
->attr
& 1))
1253 if (prot
& PAGE_EXEC
) {
1259 if (msr_dr
!= (tlb
->attr
& 1))
1262 if ((!rw
&& prot
& PAGE_READ
) || (rw
&& (prot
& PAGE_WRITE
))) {
1275 static always_inline
int check_physical (CPUState
*env
, mmu_ctx_t
*ctx
,
1276 target_ulong eaddr
, int rw
)
1281 ctx
->prot
= PAGE_READ
| PAGE_EXEC
;
1283 switch (env
->mmu_model
) {
1284 case POWERPC_MMU_32B
:
1285 case POWERPC_MMU_601
:
1286 case POWERPC_MMU_SOFT_6xx
:
1287 case POWERPC_MMU_SOFT_74xx
:
1288 case POWERPC_MMU_SOFT_4xx
:
1289 case POWERPC_MMU_REAL
:
1290 case POWERPC_MMU_BOOKE
:
1291 ctx
->prot
|= PAGE_WRITE
;
1293 #if defined(TARGET_PPC64)
1294 case POWERPC_MMU_620
:
1295 case POWERPC_MMU_64B
:
1296 /* Real address are 60 bits long */
1297 ctx
->raddr
&= 0x0FFFFFFFFFFFFFFFULL
;
1298 ctx
->prot
|= PAGE_WRITE
;
1301 case POWERPC_MMU_SOFT_4xx_Z
:
1302 if (unlikely(msr_pe
!= 0)) {
1303 /* 403 family add some particular protections,
1304 * using PBL/PBU registers for accesses with no translation.
1307 /* Check PLB validity */
1308 (env
->pb
[0] < env
->pb
[1] &&
1309 /* and address in plb area */
1310 eaddr
>= env
->pb
[0] && eaddr
< env
->pb
[1]) ||
1311 (env
->pb
[2] < env
->pb
[3] &&
1312 eaddr
>= env
->pb
[2] && eaddr
< env
->pb
[3]) ? 1 : 0;
1313 if (in_plb
^ msr_px
) {
1314 /* Access in protected area */
1316 /* Access is not allowed */
1320 /* Read-write access is allowed */
1321 ctx
->prot
|= PAGE_WRITE
;
1325 case POWERPC_MMU_MPC8xx
:
1327 cpu_abort(env
, "MPC8xx MMU model is not implemented\n");
1329 case POWERPC_MMU_BOOKE_FSL
:
1331 cpu_abort(env
, "BookE FSL MMU model not implemented\n");
1334 cpu_abort(env
, "Unknown or invalid MMU model\n");
1341 int get_physical_address (CPUState
*env
, mmu_ctx_t
*ctx
, target_ulong eaddr
,
1342 int rw
, int access_type
)
1347 qemu_log("%s\n", __func__
);
1349 if ((access_type
== ACCESS_CODE
&& msr_ir
== 0) ||
1350 (access_type
!= ACCESS_CODE
&& msr_dr
== 0)) {
1351 /* No address translation */
1352 ret
= check_physical(env
, ctx
, eaddr
, rw
);
1355 switch (env
->mmu_model
) {
1356 case POWERPC_MMU_32B
:
1357 case POWERPC_MMU_601
:
1358 case POWERPC_MMU_SOFT_6xx
:
1359 case POWERPC_MMU_SOFT_74xx
:
1360 /* Try to find a BAT */
1361 if (env
->nb_BATs
!= 0)
1362 ret
= get_bat(env
, ctx
, eaddr
, rw
, access_type
);
1363 #if defined(TARGET_PPC64)
1364 case POWERPC_MMU_620
:
1365 case POWERPC_MMU_64B
:
1368 /* We didn't match any BAT entry or don't have BATs */
1369 ret
= get_segment(env
, ctx
, eaddr
, rw
, access_type
);
1372 case POWERPC_MMU_SOFT_4xx
:
1373 case POWERPC_MMU_SOFT_4xx_Z
:
1374 ret
= mmu40x_get_physical_address(env
, ctx
, eaddr
,
1377 case POWERPC_MMU_BOOKE
:
1378 ret
= mmubooke_get_physical_address(env
, ctx
, eaddr
,
1381 case POWERPC_MMU_MPC8xx
:
1383 cpu_abort(env
, "MPC8xx MMU model is not implemented\n");
1385 case POWERPC_MMU_BOOKE_FSL
:
1387 cpu_abort(env
, "BookE FSL MMU model not implemented\n");
1389 case POWERPC_MMU_REAL
:
1390 cpu_abort(env
, "PowerPC in real mode do not do any translation\n");
1393 cpu_abort(env
, "Unknown or invalid MMU model\n");
1398 qemu_log("%s address " ADDRX
" => %d " PADDRX
"\n",
1399 __func__
, eaddr
, ret
, ctx
->raddr
);
1405 target_phys_addr_t
cpu_get_phys_page_debug (CPUState
*env
, target_ulong addr
)
1409 if (unlikely(get_physical_address(env
, &ctx
, addr
, 0, ACCESS_INT
) != 0))
1412 return ctx
.raddr
& TARGET_PAGE_MASK
;
1415 /* Perform address translation */
1416 int cpu_ppc_handle_mmu_fault (CPUState
*env
, target_ulong address
, int rw
,
1417 int mmu_idx
, int is_softmmu
)
1426 access_type
= ACCESS_CODE
;
1429 access_type
= env
->access_type
;
1431 ret
= get_physical_address(env
, &ctx
, address
, rw
, access_type
);
1433 ret
= tlb_set_page_exec(env
, address
& TARGET_PAGE_MASK
,
1434 ctx
.raddr
& TARGET_PAGE_MASK
, ctx
.prot
,
1435 mmu_idx
, is_softmmu
);
1436 } else if (ret
< 0) {
1438 if (access_type
== ACCESS_CODE
) {
1441 /* No matches in page tables or TLB */
1442 switch (env
->mmu_model
) {
1443 case POWERPC_MMU_SOFT_6xx
:
1444 env
->exception_index
= POWERPC_EXCP_IFTLB
;
1445 env
->error_code
= 1 << 18;
1446 env
->spr
[SPR_IMISS
] = address
;
1447 env
->spr
[SPR_ICMP
] = 0x80000000 | ctx
.ptem
;
1449 case POWERPC_MMU_SOFT_74xx
:
1450 env
->exception_index
= POWERPC_EXCP_IFTLB
;
1452 case POWERPC_MMU_SOFT_4xx
:
1453 case POWERPC_MMU_SOFT_4xx_Z
:
1454 env
->exception_index
= POWERPC_EXCP_ITLB
;
1455 env
->error_code
= 0;
1456 env
->spr
[SPR_40x_DEAR
] = address
;
1457 env
->spr
[SPR_40x_ESR
] = 0x00000000;
1459 case POWERPC_MMU_32B
:
1460 case POWERPC_MMU_601
:
1461 #if defined(TARGET_PPC64)
1462 case POWERPC_MMU_620
:
1463 case POWERPC_MMU_64B
:
1465 env
->exception_index
= POWERPC_EXCP_ISI
;
1466 env
->error_code
= 0x40000000;
1468 case POWERPC_MMU_BOOKE
:
1470 cpu_abort(env
, "BookE MMU model is not implemented\n");
1472 case POWERPC_MMU_BOOKE_FSL
:
1474 cpu_abort(env
, "BookE FSL MMU model is not implemented\n");
1476 case POWERPC_MMU_MPC8xx
:
1478 cpu_abort(env
, "MPC8xx MMU model is not implemented\n");
1480 case POWERPC_MMU_REAL
:
1481 cpu_abort(env
, "PowerPC in real mode should never raise "
1482 "any MMU exceptions\n");
1485 cpu_abort(env
, "Unknown or invalid MMU model\n");
1490 /* Access rights violation */
1491 env
->exception_index
= POWERPC_EXCP_ISI
;
1492 env
->error_code
= 0x08000000;
1495 /* No execute protection violation */
1496 env
->exception_index
= POWERPC_EXCP_ISI
;
1497 env
->error_code
= 0x10000000;
1500 /* Direct store exception */
1501 /* No code fetch is allowed in direct-store areas */
1502 env
->exception_index
= POWERPC_EXCP_ISI
;
1503 env
->error_code
= 0x10000000;
1505 #if defined(TARGET_PPC64)
1507 /* No match in segment table */
1508 if (env
->mmu_model
== POWERPC_MMU_620
) {
1509 env
->exception_index
= POWERPC_EXCP_ISI
;
1510 /* XXX: this might be incorrect */
1511 env
->error_code
= 0x40000000;
1513 env
->exception_index
= POWERPC_EXCP_ISEG
;
1514 env
->error_code
= 0;
1522 /* No matches in page tables or TLB */
1523 switch (env
->mmu_model
) {
1524 case POWERPC_MMU_SOFT_6xx
:
1526 env
->exception_index
= POWERPC_EXCP_DSTLB
;
1527 env
->error_code
= 1 << 16;
1529 env
->exception_index
= POWERPC_EXCP_DLTLB
;
1530 env
->error_code
= 0;
1532 env
->spr
[SPR_DMISS
] = address
;
1533 env
->spr
[SPR_DCMP
] = 0x80000000 | ctx
.ptem
;
1535 env
->error_code
|= ctx
.key
<< 19;
1536 env
->spr
[SPR_HASH1
] = ctx
.pg_addr
[0];
1537 env
->spr
[SPR_HASH2
] = ctx
.pg_addr
[1];
1539 case POWERPC_MMU_SOFT_74xx
:
1541 env
->exception_index
= POWERPC_EXCP_DSTLB
;
1543 env
->exception_index
= POWERPC_EXCP_DLTLB
;
1546 /* Implement LRU algorithm */
1547 env
->error_code
= ctx
.key
<< 19;
1548 env
->spr
[SPR_TLBMISS
] = (address
& ~((target_ulong
)0x3)) |
1549 ((env
->last_way
+ 1) & (env
->nb_ways
- 1));
1550 env
->spr
[SPR_PTEHI
] = 0x80000000 | ctx
.ptem
;
1552 case POWERPC_MMU_SOFT_4xx
:
1553 case POWERPC_MMU_SOFT_4xx_Z
:
1554 env
->exception_index
= POWERPC_EXCP_DTLB
;
1555 env
->error_code
= 0;
1556 env
->spr
[SPR_40x_DEAR
] = address
;
1558 env
->spr
[SPR_40x_ESR
] = 0x00800000;
1560 env
->spr
[SPR_40x_ESR
] = 0x00000000;
1562 case POWERPC_MMU_32B
:
1563 case POWERPC_MMU_601
:
1564 #if defined(TARGET_PPC64)
1565 case POWERPC_MMU_620
:
1566 case POWERPC_MMU_64B
:
1568 env
->exception_index
= POWERPC_EXCP_DSI
;
1569 env
->error_code
= 0;
1570 env
->spr
[SPR_DAR
] = address
;
1572 env
->spr
[SPR_DSISR
] = 0x42000000;
1574 env
->spr
[SPR_DSISR
] = 0x40000000;
1576 case POWERPC_MMU_MPC8xx
:
1578 cpu_abort(env
, "MPC8xx MMU model is not implemented\n");
1580 case POWERPC_MMU_BOOKE
:
1582 cpu_abort(env
, "BookE MMU model is not implemented\n");
1584 case POWERPC_MMU_BOOKE_FSL
:
1586 cpu_abort(env
, "BookE FSL MMU model is not implemented\n");
1588 case POWERPC_MMU_REAL
:
1589 cpu_abort(env
, "PowerPC in real mode should never raise "
1590 "any MMU exceptions\n");
1593 cpu_abort(env
, "Unknown or invalid MMU model\n");
1598 /* Access rights violation */
1599 env
->exception_index
= POWERPC_EXCP_DSI
;
1600 env
->error_code
= 0;
1601 env
->spr
[SPR_DAR
] = address
;
1603 env
->spr
[SPR_DSISR
] = 0x0A000000;
1605 env
->spr
[SPR_DSISR
] = 0x08000000;
1608 /* Direct store exception */
1609 switch (access_type
) {
1611 /* Floating point load/store */
1612 env
->exception_index
= POWERPC_EXCP_ALIGN
;
1613 env
->error_code
= POWERPC_EXCP_ALIGN_FP
;
1614 env
->spr
[SPR_DAR
] = address
;
1617 /* lwarx, ldarx or stwcx. */
1618 env
->exception_index
= POWERPC_EXCP_DSI
;
1619 env
->error_code
= 0;
1620 env
->spr
[SPR_DAR
] = address
;
1622 env
->spr
[SPR_DSISR
] = 0x06000000;
1624 env
->spr
[SPR_DSISR
] = 0x04000000;
1627 /* eciwx or ecowx */
1628 env
->exception_index
= POWERPC_EXCP_DSI
;
1629 env
->error_code
= 0;
1630 env
->spr
[SPR_DAR
] = address
;
1632 env
->spr
[SPR_DSISR
] = 0x06100000;
1634 env
->spr
[SPR_DSISR
] = 0x04100000;
1637 printf("DSI: invalid exception (%d)\n", ret
);
1638 env
->exception_index
= POWERPC_EXCP_PROGRAM
;
1640 POWERPC_EXCP_INVAL
| POWERPC_EXCP_INVAL_INVAL
;
1641 env
->spr
[SPR_DAR
] = address
;
1645 #if defined(TARGET_PPC64)
1647 /* No match in segment table */
1648 if (env
->mmu_model
== POWERPC_MMU_620
) {
1649 env
->exception_index
= POWERPC_EXCP_DSI
;
1650 env
->error_code
= 0;
1651 env
->spr
[SPR_DAR
] = address
;
1652 /* XXX: this might be incorrect */
1654 env
->spr
[SPR_DSISR
] = 0x42000000;
1656 env
->spr
[SPR_DSISR
] = 0x40000000;
1658 env
->exception_index
= POWERPC_EXCP_DSEG
;
1659 env
->error_code
= 0;
1660 env
->spr
[SPR_DAR
] = address
;
1667 printf("%s: set exception to %d %02x\n", __func__
,
1668 env
->exception
, env
->error_code
);
1676 /*****************************************************************************/
1677 /* BATs management */
1678 #if !defined(FLUSH_ALL_TLBS)
1679 static always_inline
void do_invalidate_BAT (CPUPPCState
*env
,
1683 target_ulong base
, end
, page
;
1685 base
= BATu
& ~0x0001FFFF;
1686 end
= base
+ mask
+ 0x00020000;
1687 LOG_BATS("Flush BAT from " ADDRX
" to " ADDRX
" (" ADDRX
")\n",
1689 for (page
= base
; page
!= end
; page
+= TARGET_PAGE_SIZE
)
1690 tlb_flush_page(env
, page
);
1691 LOG_BATS("Flush done\n");
1695 static always_inline
void dump_store_bat (CPUPPCState
*env
, char ID
,
1696 int ul
, int nr
, target_ulong value
)
1698 LOG_BATS("Set %cBAT%d%c to " ADDRX
" (" ADDRX
")\n",
1699 ID
, nr
, ul
== 0 ? 'u' : 'l', value
, env
->nip
);
1702 void ppc_store_ibatu (CPUPPCState
*env
, int nr
, target_ulong value
)
1706 dump_store_bat(env
, 'I', 0, nr
, value
);
1707 if (env
->IBAT
[0][nr
] != value
) {
1708 mask
= (value
<< 15) & 0x0FFE0000UL
;
1709 #if !defined(FLUSH_ALL_TLBS)
1710 do_invalidate_BAT(env
, env
->IBAT
[0][nr
], mask
);
1712 /* When storing valid upper BAT, mask BEPI and BRPN
1713 * and invalidate all TLBs covered by this BAT
1715 mask
= (value
<< 15) & 0x0FFE0000UL
;
1716 env
->IBAT
[0][nr
] = (value
& 0x00001FFFUL
) |
1717 (value
& ~0x0001FFFFUL
& ~mask
);
1718 env
->IBAT
[1][nr
] = (env
->IBAT
[1][nr
] & 0x0000007B) |
1719 (env
->IBAT
[1][nr
] & ~0x0001FFFF & ~mask
);
1720 #if !defined(FLUSH_ALL_TLBS)
1721 do_invalidate_BAT(env
, env
->IBAT
[0][nr
], mask
);
1728 void ppc_store_ibatl (CPUPPCState
*env
, int nr
, target_ulong value
)
1730 dump_store_bat(env
, 'I', 1, nr
, value
);
1731 env
->IBAT
[1][nr
] = value
;
1734 void ppc_store_dbatu (CPUPPCState
*env
, int nr
, target_ulong value
)
1738 dump_store_bat(env
, 'D', 0, nr
, value
);
1739 if (env
->DBAT
[0][nr
] != value
) {
1740 /* When storing valid upper BAT, mask BEPI and BRPN
1741 * and invalidate all TLBs covered by this BAT
1743 mask
= (value
<< 15) & 0x0FFE0000UL
;
1744 #if !defined(FLUSH_ALL_TLBS)
1745 do_invalidate_BAT(env
, env
->DBAT
[0][nr
], mask
);
1747 mask
= (value
<< 15) & 0x0FFE0000UL
;
1748 env
->DBAT
[0][nr
] = (value
& 0x00001FFFUL
) |
1749 (value
& ~0x0001FFFFUL
& ~mask
);
1750 env
->DBAT
[1][nr
] = (env
->DBAT
[1][nr
] & 0x0000007B) |
1751 (env
->DBAT
[1][nr
] & ~0x0001FFFF & ~mask
);
1752 #if !defined(FLUSH_ALL_TLBS)
1753 do_invalidate_BAT(env
, env
->DBAT
[0][nr
], mask
);
1760 void ppc_store_dbatl (CPUPPCState
*env
, int nr
, target_ulong value
)
1762 dump_store_bat(env
, 'D', 1, nr
, value
);
1763 env
->DBAT
[1][nr
] = value
;
1766 void ppc_store_ibatu_601 (CPUPPCState
*env
, int nr
, target_ulong value
)
1771 dump_store_bat(env
, 'I', 0, nr
, value
);
1772 if (env
->IBAT
[0][nr
] != value
) {
1774 mask
= (env
->IBAT
[1][nr
] << 17) & 0x0FFE0000UL
;
1775 if (env
->IBAT
[1][nr
] & 0x40) {
1776 /* Invalidate BAT only if it is valid */
1777 #if !defined(FLUSH_ALL_TLBS)
1778 do_invalidate_BAT(env
, env
->IBAT
[0][nr
], mask
);
1783 /* When storing valid upper BAT, mask BEPI and BRPN
1784 * and invalidate all TLBs covered by this BAT
1786 env
->IBAT
[0][nr
] = (value
& 0x00001FFFUL
) |
1787 (value
& ~0x0001FFFFUL
& ~mask
);
1788 env
->DBAT
[0][nr
] = env
->IBAT
[0][nr
];
1789 if (env
->IBAT
[1][nr
] & 0x40) {
1790 #if !defined(FLUSH_ALL_TLBS)
1791 do_invalidate_BAT(env
, env
->IBAT
[0][nr
], mask
);
1796 #if defined(FLUSH_ALL_TLBS)
1803 void ppc_store_ibatl_601 (CPUPPCState
*env
, int nr
, target_ulong value
)
1808 dump_store_bat(env
, 'I', 1, nr
, value
);
1809 if (env
->IBAT
[1][nr
] != value
) {
1811 if (env
->IBAT
[1][nr
] & 0x40) {
1812 #if !defined(FLUSH_ALL_TLBS)
1813 mask
= (env
->IBAT
[1][nr
] << 17) & 0x0FFE0000UL
;
1814 do_invalidate_BAT(env
, env
->IBAT
[0][nr
], mask
);
1820 #if !defined(FLUSH_ALL_TLBS)
1821 mask
= (value
<< 17) & 0x0FFE0000UL
;
1822 do_invalidate_BAT(env
, env
->IBAT
[0][nr
], mask
);
1827 env
->IBAT
[1][nr
] = value
;
1828 env
->DBAT
[1][nr
] = value
;
1829 #if defined(FLUSH_ALL_TLBS)
1836 /*****************************************************************************/
1837 /* TLB management */
1838 void ppc_tlb_invalidate_all (CPUPPCState
*env
)
1840 switch (env
->mmu_model
) {
1841 case POWERPC_MMU_SOFT_6xx
:
1842 case POWERPC_MMU_SOFT_74xx
:
1843 ppc6xx_tlb_invalidate_all(env
);
1845 case POWERPC_MMU_SOFT_4xx
:
1846 case POWERPC_MMU_SOFT_4xx_Z
:
1847 ppc4xx_tlb_invalidate_all(env
);
1849 case POWERPC_MMU_REAL
:
1850 cpu_abort(env
, "No TLB for PowerPC 4xx in real mode\n");
1852 case POWERPC_MMU_MPC8xx
:
1854 cpu_abort(env
, "MPC8xx MMU model is not implemented\n");
1856 case POWERPC_MMU_BOOKE
:
1858 cpu_abort(env
, "BookE MMU model is not implemented\n");
1860 case POWERPC_MMU_BOOKE_FSL
:
1863 cpu_abort(env
, "BookE MMU model is not implemented\n");
1865 case POWERPC_MMU_32B
:
1866 case POWERPC_MMU_601
:
1867 #if defined(TARGET_PPC64)
1868 case POWERPC_MMU_620
:
1869 case POWERPC_MMU_64B
:
1870 #endif /* defined(TARGET_PPC64) */
1875 cpu_abort(env
, "Unknown MMU model\n");
1880 void ppc_tlb_invalidate_one (CPUPPCState
*env
, target_ulong addr
)
1882 #if !defined(FLUSH_ALL_TLBS)
1883 addr
&= TARGET_PAGE_MASK
;
1884 switch (env
->mmu_model
) {
1885 case POWERPC_MMU_SOFT_6xx
:
1886 case POWERPC_MMU_SOFT_74xx
:
1887 ppc6xx_tlb_invalidate_virt(env
, addr
, 0);
1888 if (env
->id_tlbs
== 1)
1889 ppc6xx_tlb_invalidate_virt(env
, addr
, 1);
1891 case POWERPC_MMU_SOFT_4xx
:
1892 case POWERPC_MMU_SOFT_4xx_Z
:
1893 ppc4xx_tlb_invalidate_virt(env
, addr
, env
->spr
[SPR_40x_PID
]);
1895 case POWERPC_MMU_REAL
:
1896 cpu_abort(env
, "No TLB for PowerPC 4xx in real mode\n");
1898 case POWERPC_MMU_MPC8xx
:
1900 cpu_abort(env
, "MPC8xx MMU model is not implemented\n");
1902 case POWERPC_MMU_BOOKE
:
1904 cpu_abort(env
, "BookE MMU model is not implemented\n");
1906 case POWERPC_MMU_BOOKE_FSL
:
1908 cpu_abort(env
, "BookE FSL MMU model is not implemented\n");
1910 case POWERPC_MMU_32B
:
1911 case POWERPC_MMU_601
:
1912 /* tlbie invalidate TLBs for all segments */
1913 addr
&= ~((target_ulong
)-1ULL << 28);
1914 /* XXX: this case should be optimized,
1915 * giving a mask to tlb_flush_page
1917 tlb_flush_page(env
, addr
| (0x0 << 28));
1918 tlb_flush_page(env
, addr
| (0x1 << 28));
1919 tlb_flush_page(env
, addr
| (0x2 << 28));
1920 tlb_flush_page(env
, addr
| (0x3 << 28));
1921 tlb_flush_page(env
, addr
| (0x4 << 28));
1922 tlb_flush_page(env
, addr
| (0x5 << 28));
1923 tlb_flush_page(env
, addr
| (0x6 << 28));
1924 tlb_flush_page(env
, addr
| (0x7 << 28));
1925 tlb_flush_page(env
, addr
| (0x8 << 28));
1926 tlb_flush_page(env
, addr
| (0x9 << 28));
1927 tlb_flush_page(env
, addr
| (0xA << 28));
1928 tlb_flush_page(env
, addr
| (0xB << 28));
1929 tlb_flush_page(env
, addr
| (0xC << 28));
1930 tlb_flush_page(env
, addr
| (0xD << 28));
1931 tlb_flush_page(env
, addr
| (0xE << 28));
1932 tlb_flush_page(env
, addr
| (0xF << 28));
1934 #if defined(TARGET_PPC64)
1935 case POWERPC_MMU_620
:
1936 case POWERPC_MMU_64B
:
1937 /* tlbie invalidate TLBs for all segments */
1938 /* XXX: given the fact that there are too many segments to invalidate,
1939 * and we still don't have a tlb_flush_mask(env, n, mask) in Qemu,
1940 * we just invalidate all TLBs
1944 #endif /* defined(TARGET_PPC64) */
1947 cpu_abort(env
, "Unknown MMU model\n");
1951 ppc_tlb_invalidate_all(env
);
1955 /*****************************************************************************/
1956 /* Special registers manipulation */
1957 #if defined(TARGET_PPC64)
1958 void ppc_store_asr (CPUPPCState
*env
, target_ulong value
)
1960 if (env
->asr
!= value
) {
1967 void ppc_store_sdr1 (CPUPPCState
*env
, target_ulong value
)
1969 LOG_MMU("%s: " ADDRX
"\n", __func__
, value
);
1970 if (env
->sdr1
!= value
) {
1971 /* XXX: for PowerPC 64, should check that the HTABSIZE value
1979 #if defined(TARGET_PPC64)
1980 target_ulong
ppc_load_sr (CPUPPCState
*env
, int slb_nr
)
1987 void ppc_store_sr (CPUPPCState
*env
, int srnum
, target_ulong value
)
1989 LOG_MMU("%s: reg=%d " ADDRX
" " ADDRX
"\n",
1990 __func__
, srnum
, value
, env
->sr
[srnum
]);
1991 #if defined(TARGET_PPC64)
1992 if (env
->mmu_model
& POWERPC_MMU_64
) {
1993 uint64_t rb
= 0, rs
= 0;
1996 rb
|= ((uint32_t)srnum
& 0xf) << 28;
1997 /* Set the valid bit */
2000 rb
|= (uint32_t)srnum
;
2003 rs
|= (value
& 0xfffffff) << 12;
2005 rs
|= ((value
>> 27) & 0xf) << 9;
2007 ppc_store_slb(env
, rb
, rs
);
2010 if (env
->sr
[srnum
] != value
) {
2011 env
->sr
[srnum
] = value
;
2012 /* Invalidating 256MB of virtual memory in 4kB pages is way longer than
2013 flusing the whole TLB. */
2014 #if !defined(FLUSH_ALL_TLBS) && 0
2016 target_ulong page
, end
;
2017 /* Invalidate 256 MB of virtual memory */
2018 page
= (16 << 20) * srnum
;
2019 end
= page
+ (16 << 20);
2020 for (; page
!= end
; page
+= TARGET_PAGE_SIZE
)
2021 tlb_flush_page(env
, page
);
2028 #endif /* !defined (CONFIG_USER_ONLY) */
2030 /* GDBstub can read and write MSR... */
2031 void ppc_store_msr (CPUPPCState
*env
, target_ulong value
)
2033 hreg_store_msr(env
, value
, 0);
2036 /*****************************************************************************/
2037 /* Exception processing */
2038 #if defined (CONFIG_USER_ONLY)
2039 void do_interrupt (CPUState
*env
)
2041 env
->exception_index
= POWERPC_EXCP_NONE
;
2042 env
->error_code
= 0;
2045 void ppc_hw_interrupt (CPUState
*env
)
2047 env
->exception_index
= POWERPC_EXCP_NONE
;
2048 env
->error_code
= 0;
2050 #else /* defined (CONFIG_USER_ONLY) */
2051 static always_inline
void dump_syscall (CPUState
*env
)
2053 qemu_log_mask(CPU_LOG_INT
, "syscall r0=" REGX
" r3=" REGX
" r4=" REGX
2054 " r5=" REGX
" r6=" REGX
" nip=" ADDRX
"\n",
2055 ppc_dump_gpr(env
, 0), ppc_dump_gpr(env
, 3), ppc_dump_gpr(env
, 4),
2056 ppc_dump_gpr(env
, 5), ppc_dump_gpr(env
, 6), env
->nip
);
2059 /* Note that this function should be greatly optimized
2060 * when called with a constant excp, from ppc_hw_interrupt
2062 static always_inline
void powerpc_excp (CPUState
*env
,
2063 int excp_model
, int excp
)
2065 target_ulong msr
, new_msr
, vector
;
2066 int srr0
, srr1
, asrr0
, asrr1
;
2067 int lpes0
, lpes1
, lev
;
2070 /* XXX: find a suitable condition to enable the hypervisor mode */
2071 lpes0
= (env
->spr
[SPR_LPCR
] >> 1) & 1;
2072 lpes1
= (env
->spr
[SPR_LPCR
] >> 2) & 1;
2074 /* Those values ensure we won't enter the hypervisor mode */
2079 qemu_log_mask(CPU_LOG_INT
, "Raise exception at " ADDRX
" => %08x (%02x)\n",
2080 env
->nip
, excp
, env
->error_code
);
2087 msr
&= ~((target_ulong
)0x783F0000);
2089 case POWERPC_EXCP_NONE
:
2090 /* Should never happen */
2092 case POWERPC_EXCP_CRITICAL
: /* Critical input */
2093 new_msr
&= ~((target_ulong
)1 << MSR_RI
); /* XXX: check this */
2094 switch (excp_model
) {
2095 case POWERPC_EXCP_40x
:
2096 srr0
= SPR_40x_SRR2
;
2097 srr1
= SPR_40x_SRR3
;
2099 case POWERPC_EXCP_BOOKE
:
2100 srr0
= SPR_BOOKE_CSRR0
;
2101 srr1
= SPR_BOOKE_CSRR1
;
2103 case POWERPC_EXCP_G2
:
2109 case POWERPC_EXCP_MCHECK
: /* Machine check exception */
2111 /* Machine check exception is not enabled.
2112 * Enter checkstop state.
2114 if (qemu_log_enabled()) {
2115 qemu_log("Machine check while not allowed. "
2116 "Entering checkstop state\n");
2118 fprintf(stderr
, "Machine check while not allowed. "
2119 "Entering checkstop state\n");
2122 env
->interrupt_request
|= CPU_INTERRUPT_EXITTB
;
2124 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2125 new_msr
&= ~((target_ulong
)1 << MSR_ME
);
2127 /* XXX: find a suitable condition to enable the hypervisor mode */
2128 new_msr
|= (target_ulong
)MSR_HVB
;
2130 /* XXX: should also have something loaded in DAR / DSISR */
2131 switch (excp_model
) {
2132 case POWERPC_EXCP_40x
:
2133 srr0
= SPR_40x_SRR2
;
2134 srr1
= SPR_40x_SRR3
;
2136 case POWERPC_EXCP_BOOKE
:
2137 srr0
= SPR_BOOKE_MCSRR0
;
2138 srr1
= SPR_BOOKE_MCSRR1
;
2139 asrr0
= SPR_BOOKE_CSRR0
;
2140 asrr1
= SPR_BOOKE_CSRR1
;
2146 case POWERPC_EXCP_DSI
: /* Data storage exception */
2147 LOG_EXCP("DSI exception: DSISR=" ADDRX
" DAR=" ADDRX
"\n",
2148 env
->spr
[SPR_DSISR
], env
->spr
[SPR_DAR
]);
2149 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2151 new_msr
|= (target_ulong
)MSR_HVB
;
2153 case POWERPC_EXCP_ISI
: /* Instruction storage exception */
2154 LOG_EXCP("ISI exception: msr=" ADDRX
", nip=" ADDRX
"\n",
2156 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2158 new_msr
|= (target_ulong
)MSR_HVB
;
2159 msr
|= env
->error_code
;
2161 case POWERPC_EXCP_EXTERNAL
: /* External input */
2162 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2164 new_msr
|= (target_ulong
)MSR_HVB
;
2166 case POWERPC_EXCP_ALIGN
: /* Alignment exception */
2167 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2169 new_msr
|= (target_ulong
)MSR_HVB
;
2170 /* XXX: this is false */
2171 /* Get rS/rD and rA from faulting opcode */
2172 env
->spr
[SPR_DSISR
] |= (ldl_code((env
->nip
- 4)) & 0x03FF0000) >> 16;
2174 case POWERPC_EXCP_PROGRAM
: /* Program exception */
2175 switch (env
->error_code
& ~0xF) {
2176 case POWERPC_EXCP_FP
:
2177 if ((msr_fe0
== 0 && msr_fe1
== 0) || msr_fp
== 0) {
2178 LOG_EXCP("Ignore floating point exception\n");
2179 env
->exception_index
= POWERPC_EXCP_NONE
;
2180 env
->error_code
= 0;
2183 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2185 new_msr
|= (target_ulong
)MSR_HVB
;
2187 if (msr_fe0
== msr_fe1
)
2191 case POWERPC_EXCP_INVAL
:
2192 LOG_EXCP("Invalid instruction at " ADDRX
"\n",
2194 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2196 new_msr
|= (target_ulong
)MSR_HVB
;
2199 case POWERPC_EXCP_PRIV
:
2200 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2202 new_msr
|= (target_ulong
)MSR_HVB
;
2205 case POWERPC_EXCP_TRAP
:
2206 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2208 new_msr
|= (target_ulong
)MSR_HVB
;
2212 /* Should never occur */
2213 cpu_abort(env
, "Invalid program exception %d. Aborting\n",
2218 case POWERPC_EXCP_FPU
: /* Floating-point unavailable exception */
2219 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2221 new_msr
|= (target_ulong
)MSR_HVB
;
2223 case POWERPC_EXCP_SYSCALL
: /* System call exception */
2224 /* NOTE: this is a temporary hack to support graphics OSI
2225 calls from the MOL driver */
2226 /* XXX: To be removed */
2227 if (env
->gpr
[3] == 0x113724fa && env
->gpr
[4] == 0x77810f9b &&
2229 if (env
->osi_call(env
) != 0) {
2230 env
->exception_index
= POWERPC_EXCP_NONE
;
2231 env
->error_code
= 0;
2236 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2237 lev
= env
->error_code
;
2238 if (lev
== 1 || (lpes0
== 0 && lpes1
== 0))
2239 new_msr
|= (target_ulong
)MSR_HVB
;
2241 case POWERPC_EXCP_APU
: /* Auxiliary processor unavailable */
2242 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2244 case POWERPC_EXCP_DECR
: /* Decrementer exception */
2245 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2247 new_msr
|= (target_ulong
)MSR_HVB
;
2249 case POWERPC_EXCP_FIT
: /* Fixed-interval timer interrupt */
2251 LOG_EXCP("FIT exception\n");
2252 new_msr
&= ~((target_ulong
)1 << MSR_RI
); /* XXX: check this */
2254 case POWERPC_EXCP_WDT
: /* Watchdog timer interrupt */
2255 LOG_EXCP("WDT exception\n");
2256 switch (excp_model
) {
2257 case POWERPC_EXCP_BOOKE
:
2258 srr0
= SPR_BOOKE_CSRR0
;
2259 srr1
= SPR_BOOKE_CSRR1
;
2264 new_msr
&= ~((target_ulong
)1 << MSR_RI
); /* XXX: check this */
2266 case POWERPC_EXCP_DTLB
: /* Data TLB error */
2267 new_msr
&= ~((target_ulong
)1 << MSR_RI
); /* XXX: check this */
2269 case POWERPC_EXCP_ITLB
: /* Instruction TLB error */
2270 new_msr
&= ~((target_ulong
)1 << MSR_RI
); /* XXX: check this */
2272 case POWERPC_EXCP_DEBUG
: /* Debug interrupt */
2273 switch (excp_model
) {
2274 case POWERPC_EXCP_BOOKE
:
2275 srr0
= SPR_BOOKE_DSRR0
;
2276 srr1
= SPR_BOOKE_DSRR1
;
2277 asrr0
= SPR_BOOKE_CSRR0
;
2278 asrr1
= SPR_BOOKE_CSRR1
;
2284 cpu_abort(env
, "Debug exception is not implemented yet !\n");
2286 case POWERPC_EXCP_SPEU
: /* SPE/embedded floating-point unavailable */
2287 new_msr
&= ~((target_ulong
)1 << MSR_RI
); /* XXX: check this */
2289 case POWERPC_EXCP_EFPDI
: /* Embedded floating-point data interrupt */
2291 cpu_abort(env
, "Embedded floating point data exception "
2292 "is not implemented yet !\n");
2294 case POWERPC_EXCP_EFPRI
: /* Embedded floating-point round interrupt */
2296 cpu_abort(env
, "Embedded floating point round exception "
2297 "is not implemented yet !\n");
2299 case POWERPC_EXCP_EPERFM
: /* Embedded performance monitor interrupt */
2300 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2303 "Performance counter exception is not implemented yet !\n");
2305 case POWERPC_EXCP_DOORI
: /* Embedded doorbell interrupt */
2308 "Embedded doorbell interrupt is not implemented yet !\n");
2310 case POWERPC_EXCP_DOORCI
: /* Embedded doorbell critical interrupt */
2311 switch (excp_model
) {
2312 case POWERPC_EXCP_BOOKE
:
2313 srr0
= SPR_BOOKE_CSRR0
;
2314 srr1
= SPR_BOOKE_CSRR1
;
2320 cpu_abort(env
, "Embedded doorbell critical interrupt "
2321 "is not implemented yet !\n");
2323 case POWERPC_EXCP_RESET
: /* System reset exception */
2324 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2326 /* XXX: find a suitable condition to enable the hypervisor mode */
2327 new_msr
|= (target_ulong
)MSR_HVB
;
2330 case POWERPC_EXCP_DSEG
: /* Data segment exception */
2331 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2333 new_msr
|= (target_ulong
)MSR_HVB
;
2335 case POWERPC_EXCP_ISEG
: /* Instruction segment exception */
2336 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2338 new_msr
|= (target_ulong
)MSR_HVB
;
2340 case POWERPC_EXCP_HDECR
: /* Hypervisor decrementer exception */
2343 new_msr
|= (target_ulong
)MSR_HVB
;
2345 case POWERPC_EXCP_TRACE
: /* Trace exception */
2346 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2348 new_msr
|= (target_ulong
)MSR_HVB
;
2350 case POWERPC_EXCP_HDSI
: /* Hypervisor data storage exception */
2353 new_msr
|= (target_ulong
)MSR_HVB
;
2355 case POWERPC_EXCP_HISI
: /* Hypervisor instruction storage exception */
2358 new_msr
|= (target_ulong
)MSR_HVB
;
2360 case POWERPC_EXCP_HDSEG
: /* Hypervisor data segment exception */
2363 new_msr
|= (target_ulong
)MSR_HVB
;
2365 case POWERPC_EXCP_HISEG
: /* Hypervisor instruction segment exception */
2368 new_msr
|= (target_ulong
)MSR_HVB
;
2370 case POWERPC_EXCP_VPU
: /* Vector unavailable exception */
2371 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2373 new_msr
|= (target_ulong
)MSR_HVB
;
2375 case POWERPC_EXCP_PIT
: /* Programmable interval timer interrupt */
2376 LOG_EXCP("PIT exception\n");
2377 new_msr
&= ~((target_ulong
)1 << MSR_RI
); /* XXX: check this */
2379 case POWERPC_EXCP_IO
: /* IO error exception */
2381 cpu_abort(env
, "601 IO error exception is not implemented yet !\n");
2383 case POWERPC_EXCP_RUNM
: /* Run mode exception */
2385 cpu_abort(env
, "601 run mode exception is not implemented yet !\n");
2387 case POWERPC_EXCP_EMUL
: /* Emulation trap exception */
2389 cpu_abort(env
, "602 emulation trap exception "
2390 "is not implemented yet !\n");
2392 case POWERPC_EXCP_IFTLB
: /* Instruction fetch TLB error */
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 instruction TLB miss exception\n");
2411 case POWERPC_EXCP_DLTLB
: /* Data load 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 case POWERPC_EXCP_7x5
:
2423 case POWERPC_EXCP_74xx
:
2426 cpu_abort(env
, "Invalid data load TLB miss exception\n");
2430 case POWERPC_EXCP_DSTLB
: /* Data store TLB miss */
2431 new_msr
&= ~((target_ulong
)1 << MSR_RI
); /* XXX: check this */
2432 if (lpes1
== 0) /* XXX: check this */
2433 new_msr
|= (target_ulong
)MSR_HVB
;
2434 switch (excp_model
) {
2435 case POWERPC_EXCP_602
:
2436 case POWERPC_EXCP_603
:
2437 case POWERPC_EXCP_603E
:
2438 case POWERPC_EXCP_G2
:
2440 /* Swap temporary saved registers with GPRs */
2441 if (!(new_msr
& ((target_ulong
)1 << MSR_TGPR
))) {
2442 new_msr
|= (target_ulong
)1 << MSR_TGPR
;
2443 hreg_swap_gpr_tgpr(env
);
2446 case POWERPC_EXCP_7x5
:
2448 #if defined (DEBUG_SOFTWARE_TLB)
2449 if (qemu_log_enabled()) {
2450 const unsigned char *es
;
2451 target_ulong
*miss
, *cmp
;
2453 if (excp
== POWERPC_EXCP_IFTLB
) {
2456 miss
= &env
->spr
[SPR_IMISS
];
2457 cmp
= &env
->spr
[SPR_ICMP
];
2459 if (excp
== POWERPC_EXCP_DLTLB
)
2464 miss
= &env
->spr
[SPR_DMISS
];
2465 cmp
= &env
->spr
[SPR_DCMP
];
2467 qemu_log("6xx %sTLB miss: %cM " ADDRX
" %cC " ADDRX
2468 " H1 " ADDRX
" H2 " ADDRX
" %08x\n",
2469 es
, en
, *miss
, en
, *cmp
,
2470 env
->spr
[SPR_HASH1
], env
->spr
[SPR_HASH2
],
2474 msr
|= env
->crf
[0] << 28;
2475 msr
|= env
->error_code
; /* key, D/I, S/L bits */
2476 /* Set way using a LRU mechanism */
2477 msr
|= ((env
->last_way
+ 1) & (env
->nb_ways
- 1)) << 17;
2479 case POWERPC_EXCP_74xx
:
2481 #if defined (DEBUG_SOFTWARE_TLB)
2482 if (qemu_log_enabled()) {
2483 const unsigned char *es
;
2484 target_ulong
*miss
, *cmp
;
2486 if (excp
== POWERPC_EXCP_IFTLB
) {
2489 miss
= &env
->spr
[SPR_TLBMISS
];
2490 cmp
= &env
->spr
[SPR_PTEHI
];
2492 if (excp
== POWERPC_EXCP_DLTLB
)
2497 miss
= &env
->spr
[SPR_TLBMISS
];
2498 cmp
= &env
->spr
[SPR_PTEHI
];
2500 qemu_log("74xx %sTLB miss: %cM " ADDRX
" %cC " ADDRX
2502 es
, en
, *miss
, en
, *cmp
, env
->error_code
);
2505 msr
|= env
->error_code
; /* key bit */
2508 cpu_abort(env
, "Invalid data store TLB miss exception\n");
2512 case POWERPC_EXCP_FPA
: /* Floating-point assist exception */
2514 cpu_abort(env
, "Floating point assist exception "
2515 "is not implemented yet !\n");
2517 case POWERPC_EXCP_DABR
: /* Data address breakpoint */
2519 cpu_abort(env
, "DABR exception is not implemented yet !\n");
2521 case POWERPC_EXCP_IABR
: /* Instruction address breakpoint */
2523 cpu_abort(env
, "IABR exception is not implemented yet !\n");
2525 case POWERPC_EXCP_SMI
: /* System management interrupt */
2527 cpu_abort(env
, "SMI exception is not implemented yet !\n");
2529 case POWERPC_EXCP_THERM
: /* Thermal interrupt */
2531 cpu_abort(env
, "Thermal management exception "
2532 "is not implemented yet !\n");
2534 case POWERPC_EXCP_PERFM
: /* Embedded performance monitor interrupt */
2535 new_msr
&= ~((target_ulong
)1 << MSR_RI
);
2537 new_msr
|= (target_ulong
)MSR_HVB
;
2540 "Performance counter exception is not implemented yet !\n");
2542 case POWERPC_EXCP_VPUA
: /* Vector assist exception */
2544 cpu_abort(env
, "VPU assist exception is not implemented yet !\n");
2546 case POWERPC_EXCP_SOFTP
: /* Soft patch exception */
2549 "970 soft-patch exception is not implemented yet !\n");
2551 case POWERPC_EXCP_MAINT
: /* Maintenance exception */
2554 "970 maintenance exception is not implemented yet !\n");
2556 case POWERPC_EXCP_MEXTBR
: /* Maskable external breakpoint */
2558 cpu_abort(env
, "Maskable external exception "
2559 "is not implemented yet !\n");
2561 case POWERPC_EXCP_NMEXTBR
: /* Non maskable external breakpoint */
2563 cpu_abort(env
, "Non maskable external exception "
2564 "is not implemented yet !\n");
2568 cpu_abort(env
, "Invalid PowerPC exception %d. Aborting\n", excp
);
2571 /* save current instruction location */
2572 env
->spr
[srr0
] = env
->nip
- 4;
2575 /* save next instruction location */
2576 env
->spr
[srr0
] = env
->nip
;
2580 env
->spr
[srr1
] = msr
;
2581 /* If any alternate SRR register are defined, duplicate saved values */
2583 env
->spr
[asrr0
] = env
->spr
[srr0
];
2585 env
->spr
[asrr1
] = env
->spr
[srr1
];
2586 /* If we disactivated any translation, flush TLBs */
2587 if (new_msr
& ((1 << MSR_IR
) | (1 << MSR_DR
)))
2589 /* reload MSR with correct bits */
2590 new_msr
&= ~((target_ulong
)1 << MSR_EE
);
2591 new_msr
&= ~((target_ulong
)1 << MSR_PR
);
2592 new_msr
&= ~((target_ulong
)1 << MSR_FP
);
2593 new_msr
&= ~((target_ulong
)1 << MSR_FE0
);
2594 new_msr
&= ~((target_ulong
)1 << MSR_SE
);
2595 new_msr
&= ~((target_ulong
)1 << MSR_BE
);
2596 new_msr
&= ~((target_ulong
)1 << MSR_FE1
);
2597 new_msr
&= ~((target_ulong
)1 << MSR_IR
);
2598 new_msr
&= ~((target_ulong
)1 << MSR_DR
);
2599 #if 0 /* Fix this: not on all targets */
2600 new_msr
&= ~((target_ulong
)1 << MSR_PMM
);
2602 new_msr
&= ~((target_ulong
)1 << MSR_LE
);
2604 new_msr
|= (target_ulong
)1 << MSR_LE
;
2606 new_msr
&= ~((target_ulong
)1 << MSR_LE
);
2607 /* Jump to handler */
2608 vector
= env
->excp_vectors
[excp
];
2609 if (vector
== (target_ulong
)-1ULL) {
2610 cpu_abort(env
, "Raised an exception without defined vector %d\n",
2613 vector
|= env
->excp_prefix
;
2614 #if defined(TARGET_PPC64)
2615 if (excp_model
== POWERPC_EXCP_BOOKE
) {
2617 new_msr
&= ~((target_ulong
)1 << MSR_CM
);
2618 vector
= (uint32_t)vector
;
2620 new_msr
|= (target_ulong
)1 << MSR_CM
;
2623 if (!msr_isf
&& !(env
->mmu_model
& POWERPC_MMU_64
)) {
2624 new_msr
&= ~((target_ulong
)1 << MSR_SF
);
2625 vector
= (uint32_t)vector
;
2627 new_msr
|= (target_ulong
)1 << MSR_SF
;
2631 /* XXX: we don't use hreg_store_msr here as already have treated
2632 * any special case that could occur. Just store MSR and update hflags
2634 env
->msr
= new_msr
& env
->msr_mask
;
2635 hreg_compute_hflags(env
);
2637 /* Reset exception state */
2638 env
->exception_index
= POWERPC_EXCP_NONE
;
2639 env
->error_code
= 0;
2642 void do_interrupt (CPUState
*env
)
2644 powerpc_excp(env
, env
->excp_model
, env
->exception_index
);
2647 void ppc_hw_interrupt (CPUPPCState
*env
)
2652 qemu_log_mask(CPU_LOG_INT
, "%s: %p pending %08x req %08x me %d ee %d\n",
2653 __func__
, env
, env
->pending_interrupts
,
2654 env
->interrupt_request
, (int)msr_me
, (int)msr_ee
);
2656 /* External reset */
2657 if (env
->pending_interrupts
& (1 << PPC_INTERRUPT_RESET
)) {
2658 env
->pending_interrupts
&= ~(1 << PPC_INTERRUPT_RESET
);
2659 powerpc_excp(env
, env
->excp_model
, POWERPC_EXCP_RESET
);
2662 /* Machine check exception */
2663 if (env
->pending_interrupts
& (1 << PPC_INTERRUPT_MCK
)) {
2664 env
->pending_interrupts
&= ~(1 << PPC_INTERRUPT_MCK
);
2665 powerpc_excp(env
, env
->excp_model
, POWERPC_EXCP_MCHECK
);
2669 /* External debug exception */
2670 if (env
->pending_interrupts
& (1 << PPC_INTERRUPT_DEBUG
)) {
2671 env
->pending_interrupts
&= ~(1 << PPC_INTERRUPT_DEBUG
);
2672 powerpc_excp(env
, env
->excp_model
, POWERPC_EXCP_DEBUG
);
2677 /* XXX: find a suitable condition to enable the hypervisor mode */
2678 hdice
= env
->spr
[SPR_LPCR
] & 1;
2682 if ((msr_ee
!= 0 || msr_hv
== 0 || msr_pr
!= 0) && hdice
!= 0) {
2683 /* Hypervisor decrementer exception */
2684 if (env
->pending_interrupts
& (1 << PPC_INTERRUPT_HDECR
)) {
2685 env
->pending_interrupts
&= ~(1 << PPC_INTERRUPT_HDECR
);
2686 powerpc_excp(env
, env
->excp_model
, POWERPC_EXCP_HDECR
);
2691 /* External critical interrupt */
2692 if (env
->pending_interrupts
& (1 << PPC_INTERRUPT_CEXT
)) {
2693 /* Taking a critical external interrupt does not clear the external
2694 * critical interrupt status
2697 env
->pending_interrupts
&= ~(1 << PPC_INTERRUPT_CEXT
);
2699 powerpc_excp(env
, env
->excp_model
, POWERPC_EXCP_CRITICAL
);
2704 /* Watchdog timer on embedded PowerPC */
2705 if (env
->pending_interrupts
& (1 << PPC_INTERRUPT_WDT
)) {
2706 env
->pending_interrupts
&= ~(1 << PPC_INTERRUPT_WDT
);
2707 powerpc_excp(env
, env
->excp_model
, POWERPC_EXCP_WDT
);
2710 if (env
->pending_interrupts
& (1 << PPC_INTERRUPT_CDOORBELL
)) {
2711 env
->pending_interrupts
&= ~(1 << PPC_INTERRUPT_CDOORBELL
);
2712 powerpc_excp(env
, env
->excp_model
, POWERPC_EXCP_DOORCI
);
2715 /* Fixed interval timer on embedded PowerPC */
2716 if (env
->pending_interrupts
& (1 << PPC_INTERRUPT_FIT
)) {
2717 env
->pending_interrupts
&= ~(1 << PPC_INTERRUPT_FIT
);
2718 powerpc_excp(env
, env
->excp_model
, POWERPC_EXCP_FIT
);
2721 /* Programmable interval timer on embedded PowerPC */
2722 if (env
->pending_interrupts
& (1 << PPC_INTERRUPT_PIT
)) {
2723 env
->pending_interrupts
&= ~(1 << PPC_INTERRUPT_PIT
);
2724 powerpc_excp(env
, env
->excp_model
, POWERPC_EXCP_PIT
);
2727 /* Decrementer exception */
2728 if (env
->pending_interrupts
& (1 << PPC_INTERRUPT_DECR
)) {
2729 env
->pending_interrupts
&= ~(1 << PPC_INTERRUPT_DECR
);
2730 powerpc_excp(env
, env
->excp_model
, POWERPC_EXCP_DECR
);
2733 /* External interrupt */
2734 if (env
->pending_interrupts
& (1 << PPC_INTERRUPT_EXT
)) {
2735 /* Taking an external interrupt does not clear the external
2739 env
->pending_interrupts
&= ~(1 << PPC_INTERRUPT_EXT
);
2741 powerpc_excp(env
, env
->excp_model
, POWERPC_EXCP_EXTERNAL
);
2744 if (env
->pending_interrupts
& (1 << PPC_INTERRUPT_DOORBELL
)) {
2745 env
->pending_interrupts
&= ~(1 << PPC_INTERRUPT_DOORBELL
);
2746 powerpc_excp(env
, env
->excp_model
, POWERPC_EXCP_DOORI
);
2749 if (env
->pending_interrupts
& (1 << PPC_INTERRUPT_PERFM
)) {
2750 env
->pending_interrupts
&= ~(1 << PPC_INTERRUPT_PERFM
);
2751 powerpc_excp(env
, env
->excp_model
, POWERPC_EXCP_PERFM
);
2754 /* Thermal interrupt */
2755 if (env
->pending_interrupts
& (1 << PPC_INTERRUPT_THERM
)) {
2756 env
->pending_interrupts
&= ~(1 << PPC_INTERRUPT_THERM
);
2757 powerpc_excp(env
, env
->excp_model
, POWERPC_EXCP_THERM
);
2762 #endif /* !CONFIG_USER_ONLY */
2764 void cpu_dump_rfi (target_ulong RA
, target_ulong msr
)
2766 qemu_log("Return from exception at " ADDRX
" with flags " ADDRX
"\n",
2770 void cpu_ppc_reset (void *opaque
)
2772 CPUPPCState
*env
= opaque
;
2775 if (qemu_loglevel_mask(CPU_LOG_RESET
)) {
2776 qemu_log("CPU Reset (CPU %d)\n", env
->cpu_index
);
2777 log_cpu_state(env
, 0);
2780 msr
= (target_ulong
)0;
2782 /* XXX: find a suitable condition to enable the hypervisor mode */
2783 msr
|= (target_ulong
)MSR_HVB
;
2785 msr
|= (target_ulong
)0 << MSR_AP
; /* TO BE CHECKED */
2786 msr
|= (target_ulong
)0 << MSR_SA
; /* TO BE CHECKED */
2787 msr
|= (target_ulong
)1 << MSR_EP
;
2788 #if defined (DO_SINGLE_STEP) && 0
2789 /* Single step trace mode */
2790 msr
|= (target_ulong
)1 << MSR_SE
;
2791 msr
|= (target_ulong
)1 << MSR_BE
;
2793 #if defined(CONFIG_USER_ONLY)
2794 msr
|= (target_ulong
)1 << MSR_FP
; /* Allow floating point usage */
2795 msr
|= (target_ulong
)1 << MSR_VR
; /* Allow altivec usage */
2796 msr
|= (target_ulong
)1 << MSR_SPE
; /* Allow SPE usage */
2797 msr
|= (target_ulong
)1 << MSR_PR
;
2799 env
->excp_prefix
= env
->hreset_excp_prefix
;
2800 env
->nip
= env
->hreset_vector
| env
->excp_prefix
;
2801 if (env
->mmu_model
!= POWERPC_MMU_REAL
)
2802 ppc_tlb_invalidate_all(env
);
2804 env
->msr
= msr
& env
->msr_mask
;
2805 #if defined(TARGET_PPC64)
2806 if (env
->mmu_model
& POWERPC_MMU_64
)
2807 env
->msr
|= (1ULL << MSR_SF
);
2809 hreg_compute_hflags(env
);
2810 env
->reserve
= (target_ulong
)-1ULL;
2811 /* Be sure no exception or interrupt is pending */
2812 env
->pending_interrupts
= 0;
2813 env
->exception_index
= POWERPC_EXCP_NONE
;
2814 env
->error_code
= 0;
2815 /* Flush all TLBs */
2819 CPUPPCState
*cpu_ppc_init (const char *cpu_model
)
2822 const ppc_def_t
*def
;
2824 def
= cpu_ppc_find_by_name(cpu_model
);
2828 env
= qemu_mallocz(sizeof(CPUPPCState
));
2830 ppc_translate_init();
2831 env
->cpu_model_str
= cpu_model
;
2832 cpu_ppc_register_internal(env
, def
);
2835 qemu_init_vcpu(env
);
2840 void cpu_ppc_close (CPUPPCState
*env
)
2842 /* Should also remove all opcode tables... */