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memory: Do not print empty PIO root
[qemu/wangdongxu.git] / target-ppc / helper.c
blob96ea46494ad48598f9a2a324369d5dc8e5c90b6c
1 /*
2 * PowerPC emulation helpers for qemu.
3 *
4 * Copyright (c) 2003-2007 Jocelyn Mayer
5 *
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.
10 *
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.
15 *
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/>.
18 */
19 #include <stdarg.h>
20 #include <stdlib.h>
21 #include <stdio.h>
22 #include <string.h>
23 #include <inttypes.h>
24
25 #include "cpu.h"
26 #include "helper_regs.h"
27 #include "qemu-common.h"
28 #include "kvm.h"
29
30 //#define DEBUG_MMU
31 //#define DEBUG_BATS
32 //#define DEBUG_SLB
33 //#define DEBUG_SOFTWARE_TLB
34 //#define DUMP_PAGE_TABLES
35 //#define DEBUG_EXCEPTIONS
36 //#define FLUSH_ALL_TLBS
37
38 #ifdef DEBUG_MMU
39 # define LOG_MMU(...) qemu_log(__VA_ARGS__)
40 # define LOG_MMU_STATE(env) log_cpu_state((env), 0)
41 #else
42 # define LOG_MMU(...) do { } while (0)
43 # define LOG_MMU_STATE(...) do { } while (0)
44 #endif
45
46
47 #ifdef DEBUG_SOFTWARE_TLB
48 # define LOG_SWTLB(...) qemu_log(__VA_ARGS__)
49 #else
50 # define LOG_SWTLB(...) do { } while (0)
51 #endif
52
53 #ifdef DEBUG_BATS
54 # define LOG_BATS(...) qemu_log(__VA_ARGS__)
55 #else
56 # define LOG_BATS(...) do { } while (0)
57 #endif
58
59 #ifdef DEBUG_SLB
60 # define LOG_SLB(...) qemu_log(__VA_ARGS__)
61 #else
62 # define LOG_SLB(...) do { } while (0)
63 #endif
64
65 #ifdef DEBUG_EXCEPTIONS
66 # define LOG_EXCP(...) qemu_log(__VA_ARGS__)
67 #else
68 # define LOG_EXCP(...) do { } while (0)
69 #endif
70
71 /*****************************************************************************/
72 /* PowerPC Hypercall emulation */
73
74 void (*cpu_ppc_hypercall)(CPUState *);
75
76 /*****************************************************************************/
77 /* PowerPC MMU emulation */
78
79 #if defined(CONFIG_USER_ONLY)
80 int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
81 int mmu_idx)
82 {
83 int exception, error_code;
84
85 if (rw == 2) {
86 exception = POWERPC_EXCP_ISI;
87 error_code = 0x40000000;
88 } else {
89 exception = POWERPC_EXCP_DSI;
90 error_code = 0x40000000;
91 if (rw)
92 error_code |= 0x02000000;
93 env->spr[SPR_DAR] = address;
94 env->spr[SPR_DSISR] = error_code;
95 }
96 env->exception_index = exception;
97 env->error_code = error_code;
98
99 return 1;
100 }
101
102 #else
103 /* Common routines used by software and hardware TLBs emulation */
104 static inline int pte_is_valid(target_ulong pte0)
105 {
106 return pte0 & 0x80000000 ? 1 : 0;
107 }
108
109 static inline void pte_invalidate(target_ulong *pte0)
110 {
111 *pte0 &= ~0x80000000;
112 }
113
114 #if defined(TARGET_PPC64)
115 static inline int pte64_is_valid(target_ulong pte0)
116 {
117 return pte0 & 0x0000000000000001ULL ? 1 : 0;
118 }
119
120 static inline void pte64_invalidate(target_ulong *pte0)
121 {
122 *pte0 &= ~0x0000000000000001ULL;
123 }
124 #endif
125
126 #define PTE_PTEM_MASK 0x7FFFFFBF
127 #define PTE_CHECK_MASK (TARGET_PAGE_MASK | 0x7B)
128 #if defined(TARGET_PPC64)
129 #define PTE64_PTEM_MASK 0xFFFFFFFFFFFFFF80ULL
130 #define PTE64_CHECK_MASK (TARGET_PAGE_MASK | 0x7F)
131 #endif
132
133 static inline int pp_check(int key, int pp, int nx)
134 {
135 int access;
136
137 /* Compute access rights */
138 /* When pp is 3/7, the result is undefined. Set it to noaccess */
139 access = 0;
140 if (key == 0) {
141 switch (pp) {
142 case 0x0:
143 case 0x1:
144 case 0x2:
145 access |= PAGE_WRITE;
146 /* No break here */
147 case 0x3:
148 case 0x6:
149 access |= PAGE_READ;
150 break;
151 }
152 } else {
153 switch (pp) {
154 case 0x0:
155 case 0x6:
156 access = 0;
157 break;
158 case 0x1:
159 case 0x3:
160 access = PAGE_READ;
161 break;
162 case 0x2:
163 access = PAGE_READ | PAGE_WRITE;
164 break;
165 }
166 }
167 if (nx == 0)
168 access |= PAGE_EXEC;
169
170 return access;
171 }
172
173 static inline int check_prot(int prot, int rw, int access_type)
174 {
175 int ret;
176
177 if (access_type == ACCESS_CODE) {
178 if (prot & PAGE_EXEC)
179 ret = 0;
180 else
181 ret = -2;
182 } else if (rw) {
183 if (prot & PAGE_WRITE)
184 ret = 0;
185 else
186 ret = -2;
187 } else {
188 if (prot & PAGE_READ)
189 ret = 0;
190 else
191 ret = -2;
192 }
193
194 return ret;
195 }
196
197 static inline int _pte_check(mmu_ctx_t *ctx, int is_64b, target_ulong pte0,
198 target_ulong pte1, int h, int rw, int type)
199 {
200 target_ulong ptem, mmask;
201 int access, ret, pteh, ptev, pp;
202
203 ret = -1;
204 /* Check validity and table match */
205 #if defined(TARGET_PPC64)
206 if (is_64b) {
207 ptev = pte64_is_valid(pte0);
208 pteh = (pte0 >> 1) & 1;
209 } else
210 #endif
211 {
212 ptev = pte_is_valid(pte0);
213 pteh = (pte0 >> 6) & 1;
214 }
215 if (ptev && h == pteh) {
216 /* Check vsid & api */
217 #if defined(TARGET_PPC64)
218 if (is_64b) {
219 ptem = pte0 & PTE64_PTEM_MASK;
220 mmask = PTE64_CHECK_MASK;
221 pp = (pte1 & 0x00000003) | ((pte1 >> 61) & 0x00000004);
222 ctx->nx = (pte1 >> 2) & 1; /* No execute bit */
223 ctx->nx |= (pte1 >> 3) & 1; /* Guarded bit */
224 } else
225 #endif
226 {
227 ptem = pte0 & PTE_PTEM_MASK;
228 mmask = PTE_CHECK_MASK;
229 pp = pte1 & 0x00000003;
230 }
231 if (ptem == ctx->ptem) {
232 if (ctx->raddr != (target_phys_addr_t)-1ULL) {
233 /* all matches should have equal RPN, WIMG & PP */
234 if ((ctx->raddr & mmask) != (pte1 & mmask)) {
235 qemu_log("Bad RPN/WIMG/PP\n");
236 return -3;
237 }
238 }
239 /* Compute access rights */
240 access = pp_check(ctx->key, pp, ctx->nx);
241 /* Keep the matching PTE informations */
242 ctx->raddr = pte1;
243 ctx->prot = access;
244 ret = check_prot(ctx->prot, rw, type);
245 if (ret == 0) {
246 /* Access granted */
247 LOG_MMU("PTE access granted !\n");
248 } else {
249 /* Access right violation */
250 LOG_MMU("PTE access rejected\n");
251 }
252 }
253 }
254
255 return ret;
256 }
257
258 static inline int pte32_check(mmu_ctx_t *ctx, target_ulong pte0,
259 target_ulong pte1, int h, int rw, int type)
260 {
261 return _pte_check(ctx, 0, pte0, pte1, h, rw, type);
262 }
263
264 #if defined(TARGET_PPC64)
265 static inline int pte64_check(mmu_ctx_t *ctx, target_ulong pte0,
266 target_ulong pte1, int h, int rw, int type)
267 {
268 return _pte_check(ctx, 1, pte0, pte1, h, rw, type);
269 }
270 #endif
271
272 static inline int pte_update_flags(mmu_ctx_t *ctx, target_ulong *pte1p,
273 int ret, int rw)
274 {
275 int store = 0;
276
277 /* Update page flags */
278 if (!(*pte1p & 0x00000100)) {
279 /* Update accessed flag */
280 *pte1p |= 0x00000100;
281 store = 1;
282 }
283 if (!(*pte1p & 0x00000080)) {
284 if (rw == 1 && ret == 0) {
285 /* Update changed flag */
286 *pte1p |= 0x00000080;
287 store = 1;
288 } else {
289 /* Force page fault for first write access */
290 ctx->prot &= ~PAGE_WRITE;
291 }
292 }
293
294 return store;
295 }
296
297 /* Software driven TLB helpers */
298 static inline int ppc6xx_tlb_getnum(CPUState *env, target_ulong eaddr, int way,
299 int is_code)
300 {
301 int nr;
302
303 /* Select TLB num in a way from address */
304 nr = (eaddr >> TARGET_PAGE_BITS) & (env->tlb_per_way - 1);
305 /* Select TLB way */
306 nr += env->tlb_per_way * way;
307 /* 6xx have separate TLBs for instructions and data */
308 if (is_code && env->id_tlbs == 1)
309 nr += env->nb_tlb;
310
311 return nr;
312 }
313
314 static inline void ppc6xx_tlb_invalidate_all(CPUState *env)
315 {
316 ppc6xx_tlb_t *tlb;
317 int nr, max;
318
319 //LOG_SWTLB("Invalidate all TLBs\n");
320 /* Invalidate all defined software TLB */
321 max = env->nb_tlb;
322 if (env->id_tlbs == 1)
323 max *= 2;
324 for (nr = 0; nr < max; nr++) {
325 tlb = &env->tlb.tlb6[nr];
326 pte_invalidate(&tlb->pte0);
327 }
328 tlb_flush(env, 1);
329 }
330
331 static inline void __ppc6xx_tlb_invalidate_virt(CPUState *env,
332 target_ulong eaddr,
333 int is_code, int match_epn)
334 {
335 #if !defined(FLUSH_ALL_TLBS)
336 ppc6xx_tlb_t *tlb;
337 int way, nr;
338
339 /* Invalidate ITLB + DTLB, all ways */
340 for (way = 0; way < env->nb_ways; way++) {
341 nr = ppc6xx_tlb_getnum(env, eaddr, way, is_code);
342 tlb = &env->tlb.tlb6[nr];
343 if (pte_is_valid(tlb->pte0) && (match_epn == 0 || eaddr == tlb->EPN)) {
344 LOG_SWTLB("TLB invalidate %d/%d " TARGET_FMT_lx "\n", nr,
345 env->nb_tlb, eaddr);
346 pte_invalidate(&tlb->pte0);
347 tlb_flush_page(env, tlb->EPN);
348 }
349 }
350 #else
351 /* XXX: PowerPC specification say this is valid as well */
352 ppc6xx_tlb_invalidate_all(env);
353 #endif
354 }
355
356 static inline void ppc6xx_tlb_invalidate_virt(CPUState *env,
357 target_ulong eaddr, int is_code)
358 {
359 __ppc6xx_tlb_invalidate_virt(env, eaddr, is_code, 0);
360 }
361
362 void ppc6xx_tlb_store (CPUState *env, target_ulong EPN, int way, int is_code,
363 target_ulong pte0, target_ulong pte1)
364 {
365 ppc6xx_tlb_t *tlb;
366 int nr;
367
368 nr = ppc6xx_tlb_getnum(env, EPN, way, is_code);
369 tlb = &env->tlb.tlb6[nr];
370 LOG_SWTLB("Set TLB %d/%d EPN " TARGET_FMT_lx " PTE0 " TARGET_FMT_lx
371 " PTE1 " TARGET_FMT_lx "\n", nr, env->nb_tlb, EPN, pte0, pte1);
372 /* Invalidate any pending reference in Qemu for this virtual address */
373 __ppc6xx_tlb_invalidate_virt(env, EPN, is_code, 1);
374 tlb->pte0 = pte0;
375 tlb->pte1 = pte1;
376 tlb->EPN = EPN;
377 /* Store last way for LRU mechanism */
378 env->last_way = way;
379 }
380
381 static inline int ppc6xx_tlb_check(CPUState *env, mmu_ctx_t *ctx,
382 target_ulong eaddr, int rw, int access_type)
383 {
384 ppc6xx_tlb_t *tlb;
385 int nr, best, way;
386 int ret;
387
388 best = -1;
389 ret = -1; /* No TLB found */
390 for (way = 0; way < env->nb_ways; way++) {
391 nr = ppc6xx_tlb_getnum(env, eaddr, way,
392 access_type == ACCESS_CODE ? 1 : 0);
393 tlb = &env->tlb.tlb6[nr];
394 /* This test "emulates" the PTE index match for hardware TLBs */
395 if ((eaddr & TARGET_PAGE_MASK) != tlb->EPN) {
396 LOG_SWTLB("TLB %d/%d %s [" TARGET_FMT_lx " " TARGET_FMT_lx
397 "] <> " TARGET_FMT_lx "\n", nr, env->nb_tlb,
398 pte_is_valid(tlb->pte0) ? "valid" : "inval",
399 tlb->EPN, tlb->EPN + TARGET_PAGE_SIZE, eaddr);
400 continue;
401 }
402 LOG_SWTLB("TLB %d/%d %s " TARGET_FMT_lx " <> " TARGET_FMT_lx " "
403 TARGET_FMT_lx " %c %c\n", nr, env->nb_tlb,
404 pte_is_valid(tlb->pte0) ? "valid" : "inval",
405 tlb->EPN, eaddr, tlb->pte1,
406 rw ? 'S' : 'L', access_type == ACCESS_CODE ? 'I' : 'D');
407 switch (pte32_check(ctx, tlb->pte0, tlb->pte1, 0, rw, access_type)) {
408 case -3:
409 /* TLB inconsistency */
410 return -1;
411 case -2:
412 /* Access violation */
413 ret = -2;
414 best = nr;
415 break;
416 case -1:
417 default:
418 /* No match */
419 break;
420 case 0:
421 /* access granted */
422 /* XXX: we should go on looping to check all TLBs consistency
423 * but we can speed-up the whole thing as the
424 * result would be undefined if TLBs are not consistent.
425 */
426 ret = 0;
427 best = nr;
428 goto done;
429 }
430 }
431 if (best != -1) {
432 done:
433 LOG_SWTLB("found TLB at addr " TARGET_FMT_plx " prot=%01x ret=%d\n",
434 ctx->raddr & TARGET_PAGE_MASK, ctx->prot, ret);
435 /* Update page flags */
436 pte_update_flags(ctx, &env->tlb.tlb6[best].pte1, ret, rw);
437 }
438
439 return ret;
440 }
441
442 /* Perform BAT hit & translation */
443 static inline void bat_size_prot(CPUState *env, target_ulong *blp, int *validp,
444 int *protp, target_ulong *BATu,
445 target_ulong *BATl)
446 {
447 target_ulong bl;
448 int pp, valid, prot;
449
450 bl = (*BATu & 0x00001FFC) << 15;
451 valid = 0;
452 prot = 0;
453 if (((msr_pr == 0) && (*BATu & 0x00000002)) ||
454 ((msr_pr != 0) && (*BATu & 0x00000001))) {
455 valid = 1;
456 pp = *BATl & 0x00000003;
457 if (pp != 0) {
458 prot = PAGE_READ | PAGE_EXEC;
459 if (pp == 0x2)
460 prot |= PAGE_WRITE;
461 }
462 }
463 *blp = bl;
464 *validp = valid;
465 *protp = prot;
466 }
467
468 static inline void bat_601_size_prot(CPUState *env, target_ulong *blp,
469 int *validp, int *protp,
470 target_ulong *BATu, target_ulong *BATl)
471 {
472 target_ulong bl;
473 int key, pp, valid, prot;
474
475 bl = (*BATl & 0x0000003F) << 17;
476 LOG_BATS("b %02x ==> bl " TARGET_FMT_lx " msk " TARGET_FMT_lx "\n",
477 (uint8_t)(*BATl & 0x0000003F), bl, ~bl);
478 prot = 0;
479 valid = (*BATl >> 6) & 1;
480 if (valid) {
481 pp = *BATu & 0x00000003;
482 if (msr_pr == 0)
483 key = (*BATu >> 3) & 1;
484 else
485 key = (*BATu >> 2) & 1;
486 prot = pp_check(key, pp, 0);
487 }
488 *blp = bl;
489 *validp = valid;
490 *protp = prot;
491 }
492
493 static inline int get_bat(CPUState *env, mmu_ctx_t *ctx, target_ulong virtual,
494 int rw, int type)
495 {
496 target_ulong *BATlt, *BATut, *BATu, *BATl;
497 target_ulong BEPIl, BEPIu, bl;
498 int i, valid, prot;
499 int ret = -1;
500
501 LOG_BATS("%s: %cBAT v " TARGET_FMT_lx "\n", __func__,
502 type == ACCESS_CODE ? 'I' : 'D', virtual);
503 switch (type) {
504 case ACCESS_CODE:
505 BATlt = env->IBAT[1];
506 BATut = env->IBAT[0];
507 break;
508 default:
509 BATlt = env->DBAT[1];
510 BATut = env->DBAT[0];
511 break;
512 }
513 for (i = 0; i < env->nb_BATs; i++) {
514 BATu = &BATut[i];
515 BATl = &BATlt[i];
516 BEPIu = *BATu & 0xF0000000;
517 BEPIl = *BATu & 0x0FFE0000;
518 if (unlikely(env->mmu_model == POWERPC_MMU_601)) {
519 bat_601_size_prot(env, &bl, &valid, &prot, BATu, BATl);
520 } else {
521 bat_size_prot(env, &bl, &valid, &prot, BATu, BATl);
522 }
523 LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx
524 " BATl " TARGET_FMT_lx "\n", __func__,
525 type == ACCESS_CODE ? 'I' : 'D', i, virtual, *BATu, *BATl);
526 if ((virtual & 0xF0000000) == BEPIu &&
527 ((virtual & 0x0FFE0000) & ~bl) == BEPIl) {
528 /* BAT matches */
529 if (valid != 0) {
530 /* Get physical address */
531 ctx->raddr = (*BATl & 0xF0000000) |
532 ((virtual & 0x0FFE0000 & bl) | (*BATl & 0x0FFE0000)) |
533 (virtual & 0x0001F000);
534 /* Compute access rights */
535 ctx->prot = prot;
536 ret = check_prot(ctx->prot, rw, type);
537 if (ret == 0)
538 LOG_BATS("BAT %d match: r " TARGET_FMT_plx " prot=%c%c\n",
539 i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-',
540 ctx->prot & PAGE_WRITE ? 'W' : '-');
541 break;
542 }
543 }
544 }
545 if (ret < 0) {
546 #if defined(DEBUG_BATS)
547 if (qemu_log_enabled()) {
548 LOG_BATS("no BAT match for " TARGET_FMT_lx ":\n", virtual);
549 for (i = 0; i < 4; i++) {
550 BATu = &BATut[i];
551 BATl = &BATlt[i];
552 BEPIu = *BATu & 0xF0000000;
553 BEPIl = *BATu & 0x0FFE0000;
554 bl = (*BATu & 0x00001FFC) << 15;
555 LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx
556 " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " "
557 TARGET_FMT_lx " " TARGET_FMT_lx "\n",
558 __func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual,
559 *BATu, *BATl, BEPIu, BEPIl, bl);
560 }
561 }
562 #endif
563 }
564 /* No hit */
565 return ret;
566 }
567
568 static inline target_phys_addr_t get_pteg_offset(CPUState *env,
569 target_phys_addr_t hash,
570 int pte_size)
571 {
572 return (hash * pte_size * 8) & env->htab_mask;
573 }
574
575 /* PTE table lookup */
576 static inline int _find_pte(CPUState *env, mmu_ctx_t *ctx, int is_64b, int h,
577 int rw, int type, int target_page_bits)
578 {
579 target_phys_addr_t pteg_off;
580 target_ulong pte0, pte1;
581 int i, good = -1;
582 int ret, r;
583
584 ret = -1; /* No entry found */
585 pteg_off = get_pteg_offset(env, ctx->hash[h],
586 is_64b ? HASH_PTE_SIZE_64 : HASH_PTE_SIZE_32);
587 for (i = 0; i < 8; i++) {
588 #if defined(TARGET_PPC64)
589 if (is_64b) {
590 if (env->external_htab) {
591 pte0 = ldq_p(env->external_htab + pteg_off + (i * 16));
592 pte1 = ldq_p(env->external_htab + pteg_off + (i * 16) + 8);
593 } else {
594 pte0 = ldq_phys(env->htab_base + pteg_off + (i * 16));
595 pte1 = ldq_phys(env->htab_base + pteg_off + (i * 16) + 8);
596 }
597
598 /* We have a TLB that saves 4K pages, so let's
599 * split a huge page to 4k chunks */
600 if (target_page_bits != TARGET_PAGE_BITS)
601 pte1 |= (ctx->eaddr & (( 1 << target_page_bits ) - 1))
602 & TARGET_PAGE_MASK;
603
604 r = pte64_check(ctx, pte0, pte1, h, rw, type);
605 LOG_MMU("Load pte from " TARGET_FMT_lx " => " TARGET_FMT_lx " "
606 TARGET_FMT_lx " %d %d %d " TARGET_FMT_lx "\n",
607 pteg_off + (i * 16), pte0, pte1, (int)(pte0 & 1), h,
608 (int)((pte0 >> 1) & 1), ctx->ptem);
609 } else
610 #endif
611 {
612 if (env->external_htab) {
613 pte0 = ldl_p(env->external_htab + pteg_off + (i * 8));
614 pte1 = ldl_p(env->external_htab + pteg_off + (i * 8) + 4);
615 } else {
616 pte0 = ldl_phys(env->htab_base + pteg_off + (i * 8));
617 pte1 = ldl_phys(env->htab_base + pteg_off + (i * 8) + 4);
618 }
619 r = pte32_check(ctx, pte0, pte1, h, rw, type);
620 LOG_MMU("Load pte from " TARGET_FMT_lx " => " TARGET_FMT_lx " "
621 TARGET_FMT_lx " %d %d %d " TARGET_FMT_lx "\n",
622 pteg_off + (i * 8), pte0, pte1, (int)(pte0 >> 31), h,
623 (int)((pte0 >> 6) & 1), ctx->ptem);
624 }
625 switch (r) {
626 case -3:
627 /* PTE inconsistency */
628 return -1;
629 case -2:
630 /* Access violation */
631 ret = -2;
632 good = i;
633 break;
634 case -1:
635 default:
636 /* No PTE match */
637 break;
638 case 0:
639 /* access granted */
640 /* XXX: we should go on looping to check all PTEs consistency
641 * but if we can speed-up the whole thing as the
642 * result would be undefined if PTEs are not consistent.
643 */
644 ret = 0;
645 good = i;
646 goto done;
647 }
648 }
649 if (good != -1) {
650 done:
651 LOG_MMU("found PTE at addr " TARGET_FMT_lx " prot=%01x ret=%d\n",
652 ctx->raddr, ctx->prot, ret);
653 /* Update page flags */
654 pte1 = ctx->raddr;
655 if (pte_update_flags(ctx, &pte1, ret, rw) == 1) {
656 #if defined(TARGET_PPC64)
657 if (is_64b) {
658 if (env->external_htab) {
659 stq_p(env->external_htab + pteg_off + (good * 16) + 8,
660 pte1);
661 } else {
662 stq_phys_notdirty(env->htab_base + pteg_off +
663 (good * 16) + 8, pte1);
664 }
665 } else
666 #endif
667 {
668 if (env->external_htab) {
669 stl_p(env->external_htab + pteg_off + (good * 8) + 4,
670 pte1);
671 } else {
672 stl_phys_notdirty(env->htab_base + pteg_off +
673 (good * 8) + 4, pte1);
674 }
675 }
676 }
677 }
678
679 return ret;
680 }
681
682 static inline int find_pte(CPUState *env, mmu_ctx_t *ctx, int h, int rw,
683 int type, int target_page_bits)
684 {
685 #if defined(TARGET_PPC64)
686 if (env->mmu_model & POWERPC_MMU_64)
687 return _find_pte(env, ctx, 1, h, rw, type, target_page_bits);
688 #endif
689
690 return _find_pte(env, ctx, 0, h, rw, type, target_page_bits);
691 }
692
693 #if defined(TARGET_PPC64)
694 static inline ppc_slb_t *slb_lookup(CPUPPCState *env, target_ulong eaddr)
695 {
696 uint64_t esid_256M, esid_1T;
697 int n;
698
699 LOG_SLB("%s: eaddr " TARGET_FMT_lx "\n", __func__, eaddr);
700
701 esid_256M = (eaddr & SEGMENT_MASK_256M) | SLB_ESID_V;
702 esid_1T = (eaddr & SEGMENT_MASK_1T) | SLB_ESID_V;
703
704 for (n = 0; n < env->slb_nr; n++) {
705 ppc_slb_t *slb = &env->slb[n];
706
707 LOG_SLB("%s: slot %d %016" PRIx64 " %016"
708 PRIx64 "\n", __func__, n, slb->esid, slb->vsid);
709 /* We check for 1T matches on all MMUs here - if the MMU
710 * doesn't have 1T segment support, we will have prevented 1T
711 * entries from being inserted in the slbmte code. */
712 if (((slb->esid == esid_256M) &&
713 ((slb->vsid & SLB_VSID_B) == SLB_VSID_B_256M))
714 || ((slb->esid == esid_1T) &&
715 ((slb->vsid & SLB_VSID_B) == SLB_VSID_B_1T))) {
716 return slb;
717 }
718 }
719
720 return NULL;
721 }
722
723 void ppc_slb_invalidate_all (CPUPPCState *env)
724 {
725 int n, do_invalidate;
726
727 do_invalidate = 0;
728 /* XXX: Warning: slbia never invalidates the first segment */
729 for (n = 1; n < env->slb_nr; n++) {
730 ppc_slb_t *slb = &env->slb[n];
731
732 if (slb->esid & SLB_ESID_V) {
733 slb->esid &= ~SLB_ESID_V;
734 /* XXX: given the fact that segment size is 256 MB or 1TB,
735 * and we still don't have a tlb_flush_mask(env, n, mask)
736 * in Qemu, we just invalidate all TLBs
737 */
738 do_invalidate = 1;
739 }
740 }
741 if (do_invalidate)
742 tlb_flush(env, 1);
743 }
744
745 void ppc_slb_invalidate_one (CPUPPCState *env, uint64_t T0)
746 {
747 ppc_slb_t *slb;
748
749 slb = slb_lookup(env, T0);
750 if (!slb) {
751 return;
752 }
753
754 if (slb->esid & SLB_ESID_V) {
755 slb->esid &= ~SLB_ESID_V;
756
757 /* XXX: given the fact that segment size is 256 MB or 1TB,
758 * and we still don't have a tlb_flush_mask(env, n, mask)
759 * in Qemu, we just invalidate all TLBs
760 */
761 tlb_flush(env, 1);
762 }
763 }
764
765 int ppc_store_slb (CPUPPCState *env, target_ulong rb, target_ulong rs)
766 {
767 int slot = rb & 0xfff;
768 ppc_slb_t *slb = &env->slb[slot];
769
770 if (rb & (0x1000 - env->slb_nr)) {
771 return -1; /* Reserved bits set or slot too high */
772 }
773 if (rs & (SLB_VSID_B & ~SLB_VSID_B_1T)) {
774 return -1; /* Bad segment size */
775 }
776 if ((rs & SLB_VSID_B) && !(env->mmu_model & POWERPC_MMU_1TSEG)) {
777 return -1; /* 1T segment on MMU that doesn't support it */
778 }
779
780 /* Mask out the slot number as we store the entry */
781 slb->esid = rb & (SLB_ESID_ESID | SLB_ESID_V);
782 slb->vsid = rs;
783
784 LOG_SLB("%s: %d " TARGET_FMT_lx " - " TARGET_FMT_lx " => %016" PRIx64
785 " %016" PRIx64 "\n", __func__, slot, rb, rs,
786 slb->esid, slb->vsid);
787
788 return 0;
789 }
790
791 int ppc_load_slb_esid (CPUPPCState *env, target_ulong rb, target_ulong *rt)
792 {
793 int slot = rb & 0xfff;
794 ppc_slb_t *slb = &env->slb[slot];
795
796 if (slot >= env->slb_nr) {
797 return -1;
798 }
799
800 *rt = slb->esid;
801 return 0;
802 }
803
804 int ppc_load_slb_vsid (CPUPPCState *env, target_ulong rb, target_ulong *rt)
805 {
806 int slot = rb & 0xfff;
807 ppc_slb_t *slb = &env->slb[slot];
808
809 if (slot >= env->slb_nr) {
810 return -1;
811 }
812
813 *rt = slb->vsid;
814 return 0;
815 }
816 #endif /* defined(TARGET_PPC64) */
817
818 /* Perform segment based translation */
819 static inline int get_segment(CPUState *env, mmu_ctx_t *ctx,
820 target_ulong eaddr, int rw, int type)
821 {
822 target_phys_addr_t hash;
823 target_ulong vsid;
824 int ds, pr, target_page_bits;
825 int ret, ret2;
826
827 pr = msr_pr;
828 ctx->eaddr = eaddr;
829 #if defined(TARGET_PPC64)
830 if (env->mmu_model & POWERPC_MMU_64) {
831 ppc_slb_t *slb;
832 target_ulong pageaddr;
833 int segment_bits;
834
835 LOG_MMU("Check SLBs\n");
836 slb = slb_lookup(env, eaddr);
837 if (!slb) {
838 return -5;
839 }
840
841 if (slb->vsid & SLB_VSID_B) {
842 vsid = (slb->vsid & SLB_VSID_VSID) >> SLB_VSID_SHIFT_1T;
843 segment_bits = 40;
844 } else {
845 vsid = (slb->vsid & SLB_VSID_VSID) >> SLB_VSID_SHIFT;
846 segment_bits = 28;
847 }
848
849 target_page_bits = (slb->vsid & SLB_VSID_L)
850 ? TARGET_PAGE_BITS_16M : TARGET_PAGE_BITS;
851 ctx->key = !!(pr ? (slb->vsid & SLB_VSID_KP)
852 : (slb->vsid & SLB_VSID_KS));
853 ds = 0;
854 ctx->nx = !!(slb->vsid & SLB_VSID_N);
855
856 pageaddr = eaddr & ((1ULL << segment_bits)
857 - (1ULL << target_page_bits));
858 if (slb->vsid & SLB_VSID_B) {
859 hash = vsid ^ (vsid << 25) ^ (pageaddr >> target_page_bits);
860 } else {
861 hash = vsid ^ (pageaddr >> target_page_bits);
862 }
863 /* Only 5 bits of the page index are used in the AVPN */
864 ctx->ptem = (slb->vsid & SLB_VSID_PTEM) |
865 ((pageaddr >> 16) & ((1ULL << segment_bits) - 0x80));
866 } else
867 #endif /* defined(TARGET_PPC64) */
868 {
869 target_ulong sr, pgidx;
870
871 sr = env->sr[eaddr >> 28];
872 ctx->key = (((sr & 0x20000000) && (pr != 0)) ||
873 ((sr & 0x40000000) && (pr == 0))) ? 1 : 0;
874 ds = sr & 0x80000000 ? 1 : 0;
875 ctx->nx = sr & 0x10000000 ? 1 : 0;
876 vsid = sr & 0x00FFFFFF;
877 target_page_bits = TARGET_PAGE_BITS;
878 LOG_MMU("Check segment v=" TARGET_FMT_lx " %d " TARGET_FMT_lx " nip="
879 TARGET_FMT_lx " lr=" TARGET_FMT_lx
880 " ir=%d dr=%d pr=%d %d t=%d\n",
881 eaddr, (int)(eaddr >> 28), sr, env->nip, env->lr, (int)msr_ir,
882 (int)msr_dr, pr != 0 ? 1 : 0, rw, type);
883 pgidx = (eaddr & ~SEGMENT_MASK_256M) >> target_page_bits;
884 hash = vsid ^ pgidx;
885 ctx->ptem = (vsid << 7) | (pgidx >> 10);
886 }
887 LOG_MMU("pte segment: key=%d ds %d nx %d vsid " TARGET_FMT_lx "\n",
888 ctx->key, ds, ctx->nx, vsid);
889 ret = -1;
890 if (!ds) {
891 /* Check if instruction fetch is allowed, if needed */
892 if (type != ACCESS_CODE || ctx->nx == 0) {
893 /* Page address translation */
894 LOG_MMU("htab_base " TARGET_FMT_plx " htab_mask " TARGET_FMT_plx
895 " hash " TARGET_FMT_plx "\n",
896 env->htab_base, env->htab_mask, hash);
897 ctx->hash[0] = hash;
898 ctx->hash[1] = ~hash;
899
900 /* Initialize real address with an invalid value */
901 ctx->raddr = (target_phys_addr_t)-1ULL;
902 if (unlikely(env->mmu_model == POWERPC_MMU_SOFT_6xx ||
903 env->mmu_model == POWERPC_MMU_SOFT_74xx)) {
904 /* Software TLB search */
905 ret = ppc6xx_tlb_check(env, ctx, eaddr, rw, type);
906 } else {
907 LOG_MMU("0 htab=" TARGET_FMT_plx "/" TARGET_FMT_plx
908 " vsid=" TARGET_FMT_lx " ptem=" TARGET_FMT_lx
909 " hash=" TARGET_FMT_plx "\n",
910 env->htab_base, env->htab_mask, vsid, ctx->ptem,
911 ctx->hash[0]);
912 /* Primary table lookup */
913 ret = find_pte(env, ctx, 0, rw, type, target_page_bits);
914 if (ret < 0) {
915 /* Secondary table lookup */
916 if (eaddr != 0xEFFFFFFF)
917 LOG_MMU("1 htab=" TARGET_FMT_plx "/" TARGET_FMT_plx
918 " vsid=" TARGET_FMT_lx " api=" TARGET_FMT_lx
919 " hash=" TARGET_FMT_plx "\n", env->htab_base,
920 env->htab_mask, vsid, ctx->ptem, ctx->hash[1]);
921 ret2 = find_pte(env, ctx, 1, rw, type,
922 target_page_bits);
923 if (ret2 != -1)
924 ret = ret2;
925 }
926 }
927 #if defined (DUMP_PAGE_TABLES)
928 if (qemu_log_enabled()) {
929 target_phys_addr_t curaddr;
930 uint32_t a0, a1, a2, a3;
931 qemu_log("Page table: " TARGET_FMT_plx " len " TARGET_FMT_plx
932 "\n", sdr, mask + 0x80);
933 for (curaddr = sdr; curaddr < (sdr + mask + 0x80);
934 curaddr += 16) {
935 a0 = ldl_phys(curaddr);
936 a1 = ldl_phys(curaddr + 4);
937 a2 = ldl_phys(curaddr + 8);
938 a3 = ldl_phys(curaddr + 12);
939 if (a0 != 0 || a1 != 0 || a2 != 0 || a3 != 0) {
940 qemu_log(TARGET_FMT_plx ": %08x %08x %08x %08x\n",
941 curaddr, a0, a1, a2, a3);
942 }
943 }
944 }
945 #endif
946 } else {
947 LOG_MMU("No access allowed\n");
948 ret = -3;
949 }
950 } else {
951 target_ulong sr;
952 LOG_MMU("direct store...\n");
953 /* Direct-store segment : absolutely *BUGGY* for now */
954
955 /* Direct-store implies a 32-bit MMU.
956 * Check the Segment Register's bus unit ID (BUID).
957 */
958 sr = env->sr[eaddr >> 28];
959 if ((sr & 0x1FF00000) >> 20 == 0x07f) {
960 /* Memory-forced I/O controller interface access */
961 /* If T=1 and BUID=x'07F', the 601 performs a memory access
962 * to SR[28-31] LA[4-31], bypassing all protection mechanisms.
963 */
964 ctx->raddr = ((sr & 0xF) << 28) | (eaddr & 0x0FFFFFFF);
965 ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
966 return 0;
967 }
968
969 switch (type) {
970 case ACCESS_INT:
971 /* Integer load/store : only access allowed */
972 break;
973 case ACCESS_CODE:
974 /* No code fetch is allowed in direct-store areas */
975 return -4;
976 case ACCESS_FLOAT:
977 /* Floating point load/store */
978 return -4;
979 case ACCESS_RES:
980 /* lwarx, ldarx or srwcx. */
981 return -4;
982 case ACCESS_CACHE:
983 /* dcba, dcbt, dcbtst, dcbf, dcbi, dcbst, dcbz, or icbi */
984 /* Should make the instruction do no-op.
985 * As it already do no-op, it's quite easy :-)
986 */
987 ctx->raddr = eaddr;
988 return 0;
989 case ACCESS_EXT:
990 /* eciwx or ecowx */
991 return -4;
992 default:
993 qemu_log("ERROR: instruction should not need "
994 "address translation\n");
995 return -4;
996 }
997 if ((rw == 1 || ctx->key != 1) && (rw == 0 || ctx->key != 0)) {
998 ctx->raddr = eaddr;
999 ret = 2;
1000 } else {
1001 ret = -2;
1002 }
1003 }
1004
1005 return ret;
1006 }
1007
1008 /* Generic TLB check function for embedded PowerPC implementations */
1009 int ppcemb_tlb_check(CPUState *env, ppcemb_tlb_t *tlb,
1010 target_phys_addr_t *raddrp,
1011 target_ulong address, uint32_t pid, int ext,
1012 int i)
1013 {
1014 target_ulong mask;
1015
1016 /* Check valid flag */
1017 if (!(tlb->prot & PAGE_VALID)) {
1018 return -1;
1019 }
1020 mask = ~(tlb->size - 1);
1021 LOG_SWTLB("%s: TLB %d address " TARGET_FMT_lx " PID %u <=> " TARGET_FMT_lx
1022 " " TARGET_FMT_lx " %u %x\n", __func__, i, address, pid, tlb->EPN,
1023 mask, (uint32_t)tlb->PID, tlb->prot);
1024 /* Check PID */
1025 if (tlb->PID != 0 && tlb->PID != pid)
1026 return -1;
1027 /* Check effective address */
1028 if ((address & mask) != tlb->EPN)
1029 return -1;
1030 *raddrp = (tlb->RPN & mask) | (address & ~mask);
1031 #if (TARGET_PHYS_ADDR_BITS >= 36)
1032 if (ext) {
1033 /* Extend the physical address to 36 bits */
1034 *raddrp |= (target_phys_addr_t)(tlb->RPN & 0xF) << 32;
1035 }
1036 #endif
1037
1038 return 0;
1039 }
1040
1041 /* Generic TLB search function for PowerPC embedded implementations */
1042 int ppcemb_tlb_search (CPUPPCState *env, target_ulong address, uint32_t pid)
1043 {
1044 ppcemb_tlb_t *tlb;
1045 target_phys_addr_t raddr;
1046 int i, ret;
1047
1048 /* Default return value is no match */
1049 ret = -1;
1050 for (i = 0; i < env->nb_tlb; i++) {
1051 tlb = &env->tlb.tlbe[i];
1052 if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, 0, i) == 0) {
1053 ret = i;
1054 break;
1055 }
1056 }
1057
1058 return ret;
1059 }
1060
1061 /* Helpers specific to PowerPC 40x implementations */
1062 static inline void ppc4xx_tlb_invalidate_all(CPUState *env)
1063 {
1064 ppcemb_tlb_t *tlb;
1065 int i;
1066
1067 for (i = 0; i < env->nb_tlb; i++) {
1068 tlb = &env->tlb.tlbe[i];
1069 tlb->prot &= ~PAGE_VALID;
1070 }
1071 tlb_flush(env, 1);
1072 }
1073
1074 static inline void ppc4xx_tlb_invalidate_virt(CPUState *env,
1075 target_ulong eaddr, uint32_t pid)
1076 {
1077 #if !defined(FLUSH_ALL_TLBS)
1078 ppcemb_tlb_t *tlb;
1079 target_phys_addr_t raddr;
1080 target_ulong page, end;
1081 int i;
1082
1083 for (i = 0; i < env->nb_tlb; i++) {
1084 tlb = &env->tlb.tlbe[i];
1085 if (ppcemb_tlb_check(env, tlb, &raddr, eaddr, pid, 0, i) == 0) {
1086 end = tlb->EPN + tlb->size;
1087 for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE)
1088 tlb_flush_page(env, page);
1089 tlb->prot &= ~PAGE_VALID;
1090 break;
1091 }
1092 }
1093 #else
1094 ppc4xx_tlb_invalidate_all(env);
1095 #endif
1096 }
1097
1098 static int mmu40x_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
1099 target_ulong address, int rw, int access_type)
1100 {
1101 ppcemb_tlb_t *tlb;
1102 target_phys_addr_t raddr;
1103 int i, ret, zsel, zpr, pr;
1104
1105 ret = -1;
1106 raddr = (target_phys_addr_t)-1ULL;
1107 pr = msr_pr;
1108 for (i = 0; i < env->nb_tlb; i++) {
1109 tlb = &env->tlb.tlbe[i];
1110 if (ppcemb_tlb_check(env, tlb, &raddr, address,
1111 env->spr[SPR_40x_PID], 0, i) < 0)
1112 continue;
1113 zsel = (tlb->attr >> 4) & 0xF;
1114 zpr = (env->spr[SPR_40x_ZPR] >> (30 - (2 * zsel))) & 0x3;
1115 LOG_SWTLB("%s: TLB %d zsel %d zpr %d rw %d attr %08x\n",
1116 __func__, i, zsel, zpr, rw, tlb->attr);
1117 /* Check execute enable bit */
1118 switch (zpr) {
1119 case 0x2:
1120 if (pr != 0)
1121 goto check_perms;
1122 /* No break here */
1123 case 0x3:
1124 /* All accesses granted */
1125 ctx->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
1126 ret = 0;
1127 break;
1128 case 0x0:
1129 if (pr != 0) {
1130 /* Raise Zone protection fault. */
1131 env->spr[SPR_40x_ESR] = 1 << 22;
1132 ctx->prot = 0;
1133 ret = -2;
1134 break;
1135 }
1136 /* No break here */
1137 case 0x1:
1138 check_perms:
1139 /* Check from TLB entry */
1140 ctx->prot = tlb->prot;
1141 ret = check_prot(ctx->prot, rw, access_type);
1142 if (ret == -2)
1143 env->spr[SPR_40x_ESR] = 0;
1144 break;
1145 }
1146 if (ret >= 0) {
1147 ctx->raddr = raddr;
1148 LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx
1149 " %d %d\n", __func__, address, ctx->raddr, ctx->prot,
1150 ret);
1151 return 0;
1152 }
1153 }
1154 LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx
1155 " %d %d\n", __func__, address, raddr, ctx->prot, ret);
1156
1157 return ret;
1158 }
1159
1160 void store_40x_sler (CPUPPCState *env, uint32_t val)
1161 {
1162 /* XXX: TO BE FIXED */
1163 if (val != 0x00000000) {
1164 cpu_abort(env, "Little-endian regions are not supported by now\n");
1165 }
1166 env->spr[SPR_405_SLER] = val;
1167 }
1168
1169 static inline int mmubooke_check_tlb (CPUState *env, ppcemb_tlb_t *tlb,
1170 target_phys_addr_t *raddr, int *prot,
1171 target_ulong address, int rw,
1172 int access_type, int i)
1173 {
1174 int ret, _prot;
1175
1176 if (ppcemb_tlb_check(env, tlb, raddr, address,
1177 env->spr[SPR_BOOKE_PID],
1178 !env->nb_pids, i) >= 0) {
1179 goto found_tlb;
1180 }
1181
1182 if (env->spr[SPR_BOOKE_PID1] &&
1183 ppcemb_tlb_check(env, tlb, raddr, address,
1184 env->spr[SPR_BOOKE_PID1], 0, i) >= 0) {
1185 goto found_tlb;
1186 }
1187
1188 if (env->spr[SPR_BOOKE_PID2] &&
1189 ppcemb_tlb_check(env, tlb, raddr, address,
1190 env->spr[SPR_BOOKE_PID2], 0, i) >= 0) {
1191 goto found_tlb;
1192 }
1193
1194 LOG_SWTLB("%s: TLB entry not found\n", __func__);
1195 return -1;
1196
1197 found_tlb:
1198
1199 if (msr_pr != 0) {
1200 _prot = tlb->prot & 0xF;
1201 } else {
1202 _prot = (tlb->prot >> 4) & 0xF;
1203 }
1204
1205 /* Check the address space */
1206 if (access_type == ACCESS_CODE) {
1207 if (msr_ir != (tlb->attr & 1)) {
1208 LOG_SWTLB("%s: AS doesn't match\n", __func__);
1209 return -1;
1210 }
1211
1212 *prot = _prot;
1213 if (_prot & PAGE_EXEC) {
1214 LOG_SWTLB("%s: good TLB!\n", __func__);
1215 return 0;
1216 }
1217
1218 LOG_SWTLB("%s: no PAGE_EXEC: %x\n", __func__, _prot);
1219 ret = -3;
1220 } else {
1221 if (msr_dr != (tlb->attr & 1)) {
1222 LOG_SWTLB("%s: AS doesn't match\n", __func__);
1223 return -1;
1224 }
1225
1226 *prot = _prot;
1227 if ((!rw && _prot & PAGE_READ) || (rw && (_prot & PAGE_WRITE))) {
1228 LOG_SWTLB("%s: found TLB!\n", __func__);
1229 return 0;
1230 }
1231
1232 LOG_SWTLB("%s: PAGE_READ/WRITE doesn't match: %x\n", __func__, _prot);
1233 ret = -2;
1234 }
1235
1236 return ret;
1237 }
1238
1239 static int mmubooke_get_physical_address (CPUState *env, mmu_ctx_t *ctx,
1240 target_ulong address, int rw,
1241 int access_type)
1242 {
1243 ppcemb_tlb_t *tlb;
1244 target_phys_addr_t raddr;
1245 int i, ret;
1246
1247 ret = -1;
1248 raddr = (target_phys_addr_t)-1ULL;
1249 for (i = 0; i < env->nb_tlb; i++) {
1250 tlb = &env->tlb.tlbe[i];
1251 ret = mmubooke_check_tlb(env, tlb, &raddr, &ctx->prot, address, rw,
1252 access_type, i);
1253 if (!ret) {
1254 break;
1255 }
1256 }
1257
1258 if (ret >= 0) {
1259 ctx->raddr = raddr;
1260 LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx
1261 " %d %d\n", __func__, address, ctx->raddr, ctx->prot,
1262 ret);
1263 } else {
1264 LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx
1265 " %d %d\n", __func__, address, raddr, ctx->prot, ret);
1266 }
1267
1268 return ret;
1269 }
1270
1271 void booke206_flush_tlb(CPUState *env, int flags, const int check_iprot)
1272 {
1273 int tlb_size;
1274 int i, j;
1275 ppcmas_tlb_t *tlb = env->tlb.tlbm;
1276
1277 for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
1278 if (flags & (1 << i)) {
1279 tlb_size = booke206_tlb_size(env, i);
1280 for (j = 0; j < tlb_size; j++) {
1281 if (!check_iprot || !(tlb[j].mas1 & MAS1_IPROT)) {
1282 tlb[j].mas1 &= ~MAS1_VALID;
1283 }
1284 }
1285 }
1286 tlb += booke206_tlb_size(env, i);
1287 }
1288
1289 tlb_flush(env, 1);
1290 }
1291
1292 target_phys_addr_t booke206_tlb_to_page_size(CPUState *env, ppcmas_tlb_t *tlb)
1293 {
1294 uint32_t tlbncfg;
1295 int tlbn = booke206_tlbm_to_tlbn(env, tlb);
1296 target_phys_addr_t tlbm_size;
1297
1298 tlbncfg = env->spr[SPR_BOOKE_TLB0CFG + tlbn];
1299
1300 if (tlbncfg & TLBnCFG_AVAIL) {
1301 tlbm_size = (tlb->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;
1302 } else {
1303 tlbm_size = (tlbncfg & TLBnCFG_MINSIZE) >> TLBnCFG_MINSIZE_SHIFT;
1304 }
1305
1306 return (1 << (tlbm_size << 1)) << 10;
1307 }
1308
1309 /* TLB check function for MAS based SoftTLBs */
1310 int ppcmas_tlb_check(CPUState *env, ppcmas_tlb_t *tlb,
1311 target_phys_addr_t *raddrp,
1312 target_ulong address, uint32_t pid)
1313 {
1314 target_ulong mask;
1315 uint32_t tlb_pid;
1316
1317 /* Check valid flag */
1318 if (!(tlb->mas1 & MAS1_VALID)) {
1319 return -1;
1320 }
1321
1322 mask = ~(booke206_tlb_to_page_size(env, tlb) - 1);
1323 LOG_SWTLB("%s: TLB ADDR=0x" TARGET_FMT_lx " PID=0x%x MAS1=0x%x MAS2=0x%"
1324 PRIx64 " mask=0x" TARGET_FMT_lx " MAS7_3=0x%" PRIx64 " MAS8=%x\n",
1325 __func__, address, pid, tlb->mas1, tlb->mas2, mask, tlb->mas7_3,
1326 tlb->mas8);
1327
1328 /* Check PID */
1329 tlb_pid = (tlb->mas1 & MAS1_TID_MASK) >> MAS1_TID_SHIFT;
1330 if (tlb_pid != 0 && tlb_pid != pid) {
1331 return -1;
1332 }
1333
1334 /* Check effective address */
1335 if ((address & mask) != (tlb->mas2 & MAS2_EPN_MASK)) {
1336 return -1;
1337 }
1338 *raddrp = (tlb->mas7_3 & mask) | (address & ~mask);
1339
1340 return 0;
1341 }
1342
1343 static int mmubooke206_check_tlb(CPUState *env, ppcmas_tlb_t *tlb,
1344 target_phys_addr_t *raddr, int *prot,
1345 target_ulong address, int rw,
1346 int access_type)
1347 {
1348 int ret;
1349 int _prot = 0;
1350
1351 if (ppcmas_tlb_check(env, tlb, raddr, address,
1352 env->spr[SPR_BOOKE_PID]) >= 0) {
1353 goto found_tlb;
1354 }
1355
1356 if (env->spr[SPR_BOOKE_PID1] &&
1357 ppcmas_tlb_check(env, tlb, raddr, address,
1358 env->spr[SPR_BOOKE_PID1]) >= 0) {
1359 goto found_tlb;
1360 }
1361
1362 if (env->spr[SPR_BOOKE_PID2] &&
1363 ppcmas_tlb_check(env, tlb, raddr, address,
1364 env->spr[SPR_BOOKE_PID2]) >= 0) {
1365 goto found_tlb;
1366 }
1367
1368 LOG_SWTLB("%s: TLB entry not found\n", __func__);
1369 return -1;
1370
1371 found_tlb:
1372
1373 if (msr_pr != 0) {
1374 if (tlb->mas7_3 & MAS3_UR) {
1375 _prot |= PAGE_READ;
1376 }
1377 if (tlb->mas7_3 & MAS3_UW) {
1378 _prot |= PAGE_WRITE;
1379 }
1380 if (tlb->mas7_3 & MAS3_UX) {
1381 _prot |= PAGE_EXEC;
1382 }
1383 } else {
1384 if (tlb->mas7_3 & MAS3_SR) {
1385 _prot |= PAGE_READ;
1386 }
1387 if (tlb->mas7_3 & MAS3_SW) {
1388 _prot |= PAGE_WRITE;
1389 }
1390 if (tlb->mas7_3 & MAS3_SX) {
1391 _prot |= PAGE_EXEC;
1392 }
1393 }
1394
1395 /* Check the address space and permissions */
1396 if (access_type == ACCESS_CODE) {
1397 if (msr_ir != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) {
1398 LOG_SWTLB("%s: AS doesn't match\n", __func__);
1399 return -1;
1400 }
1401
1402 *prot = _prot;
1403 if (_prot & PAGE_EXEC) {
1404 LOG_SWTLB("%s: good TLB!\n", __func__);
1405 return 0;
1406 }
1407
1408 LOG_SWTLB("%s: no PAGE_EXEC: %x\n", __func__, _prot);
1409 ret = -3;
1410 } else {
1411 if (msr_dr != ((tlb->mas1 & MAS1_TS) >> MAS1_TS_SHIFT)) {
1412 LOG_SWTLB("%s: AS doesn't match\n", __func__);
1413 return -1;
1414 }
1415
1416 *prot = _prot;
1417 if ((!rw && _prot & PAGE_READ) || (rw && (_prot & PAGE_WRITE))) {
1418 LOG_SWTLB("%s: found TLB!\n", __func__);
1419 return 0;
1420 }
1421
1422 LOG_SWTLB("%s: PAGE_READ/WRITE doesn't match: %x\n", __func__, _prot);
1423 ret = -2;
1424 }
1425
1426 return ret;
1427 }
1428
1429 static int mmubooke206_get_physical_address(CPUState *env, mmu_ctx_t *ctx,
1430 target_ulong address, int rw,
1431 int access_type)
1432 {
1433 ppcmas_tlb_t *tlb;
1434 target_phys_addr_t raddr;
1435 int i, j, ret;
1436
1437 ret = -1;
1438 raddr = (target_phys_addr_t)-1ULL;
1439
1440 for (i = 0; i < BOOKE206_MAX_TLBN; i++) {
1441 int ways = booke206_tlb_ways(env, i);
1442
1443 for (j = 0; j < ways; j++) {
1444 tlb = booke206_get_tlbm(env, i, address, j);
1445 ret = mmubooke206_check_tlb(env, tlb, &raddr, &ctx->prot, address,
1446 rw, access_type);
1447 if (ret != -1) {
1448 goto found_tlb;
1449 }
1450 }
1451 }
1452
1453 found_tlb:
1454
1455 if (ret >= 0) {
1456 ctx->raddr = raddr;
1457 LOG_SWTLB("%s: access granted " TARGET_FMT_lx " => " TARGET_FMT_plx
1458 " %d %d\n", __func__, address, ctx->raddr, ctx->prot,
1459 ret);
1460 } else {
1461 LOG_SWTLB("%s: access refused " TARGET_FMT_lx " => " TARGET_FMT_plx
1462 " %d %d\n", __func__, address, raddr, ctx->prot, ret);
1463 }
1464
1465 return ret;
1466 }
1467
1468 static inline int check_physical(CPUState *env, mmu_ctx_t *ctx,
1469 target_ulong eaddr, int rw)
1470 {
1471 int in_plb, ret;
1472
1473 ctx->raddr = eaddr;
1474 ctx->prot = PAGE_READ | PAGE_EXEC;
1475 ret = 0;
1476 switch (env->mmu_model) {
1477 case POWERPC_MMU_32B:
1478 case POWERPC_MMU_601:
1479 case POWERPC_MMU_SOFT_6xx:
1480 case POWERPC_MMU_SOFT_74xx:
1481 case POWERPC_MMU_SOFT_4xx:
1482 case POWERPC_MMU_REAL:
1483 case POWERPC_MMU_BOOKE:
1484 ctx->prot |= PAGE_WRITE;
1485 break;
1486 #if defined(TARGET_PPC64)
1487 case POWERPC_MMU_620:
1488 case POWERPC_MMU_64B:
1489 case POWERPC_MMU_2_06:
1490 /* Real address are 60 bits long */
1491 ctx->raddr &= 0x0FFFFFFFFFFFFFFFULL;
1492 ctx->prot |= PAGE_WRITE;
1493 break;
1494 #endif
1495 case POWERPC_MMU_SOFT_4xx_Z:
1496 if (unlikely(msr_pe != 0)) {
1497 /* 403 family add some particular protections,
1498 * using PBL/PBU registers for accesses with no translation.
1499 */
1500 in_plb =
1501 /* Check PLB validity */
1502 (env->pb[0] < env->pb[1] &&
1503 /* and address in plb area */
1504 eaddr >= env->pb[0] && eaddr < env->pb[1]) ||
1505 (env->pb[2] < env->pb[3] &&
1506 eaddr >= env->pb[2] && eaddr < env->pb[3]) ? 1 : 0;
1507 if (in_plb ^ msr_px) {
1508 /* Access in protected area */
1509 if (rw == 1) {
1510 /* Access is not allowed */
1511 ret = -2;
1512 }
1513 } else {
1514 /* Read-write access is allowed */
1515 ctx->prot |= PAGE_WRITE;
1516 }
1517 }
1518 break;
1519 case POWERPC_MMU_MPC8xx:
1520 /* XXX: TODO */
1521 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1522 break;
1523 case POWERPC_MMU_BOOKE206:
1524 cpu_abort(env, "BookE 2.06 MMU doesn't have physical real mode\n");
1525 break;
1526 default:
1527 cpu_abort(env, "Unknown or invalid MMU model\n");
1528 return -1;
1529 }
1530
1531 return ret;
1532 }
1533
1534 int get_physical_address (CPUState *env, mmu_ctx_t *ctx, target_ulong eaddr,
1535 int rw, int access_type)
1536 {
1537 int ret;
1538
1539 #if 0
1540 qemu_log("%s\n", __func__);
1541 #endif
1542 if ((access_type == ACCESS_CODE && msr_ir == 0) ||
1543 (access_type != ACCESS_CODE && msr_dr == 0)) {
1544 if (env->mmu_model == POWERPC_MMU_BOOKE) {
1545 /* The BookE MMU always performs address translation. The
1546 IS and DS bits only affect the address space. */
1547 ret = mmubooke_get_physical_address(env, ctx, eaddr,
1548 rw, access_type);
1549 } else if (env->mmu_model == POWERPC_MMU_BOOKE206) {
1550 ret = mmubooke206_get_physical_address(env, ctx, eaddr, rw,
1551 access_type);
1552 } else {
1553 /* No address translation. */
1554 ret = check_physical(env, ctx, eaddr, rw);
1555 }
1556 } else {
1557 ret = -1;
1558 switch (env->mmu_model) {
1559 case POWERPC_MMU_32B:
1560 case POWERPC_MMU_601:
1561 case POWERPC_MMU_SOFT_6xx:
1562 case POWERPC_MMU_SOFT_74xx:
1563 /* Try to find a BAT */
1564 if (env->nb_BATs != 0)
1565 ret = get_bat(env, ctx, eaddr, rw, access_type);
1566 #if defined(TARGET_PPC64)
1567 case POWERPC_MMU_620:
1568 case POWERPC_MMU_64B:
1569 case POWERPC_MMU_2_06:
1570 #endif
1571 if (ret < 0) {
1572 /* We didn't match any BAT entry or don't have BATs */
1573 ret = get_segment(env, ctx, eaddr, rw, access_type);
1574 }
1575 break;
1576 case POWERPC_MMU_SOFT_4xx:
1577 case POWERPC_MMU_SOFT_4xx_Z:
1578 ret = mmu40x_get_physical_address(env, ctx, eaddr,
1579 rw, access_type);
1580 break;
1581 case POWERPC_MMU_BOOKE:
1582 ret = mmubooke_get_physical_address(env, ctx, eaddr,
1583 rw, access_type);
1584 break;
1585 case POWERPC_MMU_BOOKE206:
1586 ret = mmubooke206_get_physical_address(env, ctx, eaddr, rw,
1587 access_type);
1588 break;
1589 case POWERPC_MMU_MPC8xx:
1590 /* XXX: TODO */
1591 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1592 break;
1593 case POWERPC_MMU_REAL:
1594 cpu_abort(env, "PowerPC in real mode do not do any translation\n");
1595 return -1;
1596 default:
1597 cpu_abort(env, "Unknown or invalid MMU model\n");
1598 return -1;
1599 }
1600 }
1601 #if 0
1602 qemu_log("%s address " TARGET_FMT_lx " => %d " TARGET_FMT_plx "\n",
1603 __func__, eaddr, ret, ctx->raddr);
1604 #endif
1605
1606 return ret;
1607 }
1608
1609 target_phys_addr_t cpu_get_phys_page_debug (CPUState *env, target_ulong addr)
1610 {
1611 mmu_ctx_t ctx;
1612
1613 if (unlikely(get_physical_address(env, &ctx, addr, 0, ACCESS_INT) != 0))
1614 return -1;
1615
1616 return ctx.raddr & TARGET_PAGE_MASK;
1617 }
1618
1619 static void booke206_update_mas_tlb_miss(CPUState *env, target_ulong address,
1620 int rw)
1621 {
1622 env->spr[SPR_BOOKE_MAS0] = env->spr[SPR_BOOKE_MAS4] & MAS4_TLBSELD_MASK;
1623 env->spr[SPR_BOOKE_MAS1] = env->spr[SPR_BOOKE_MAS4] & MAS4_TSIZED_MASK;
1624 env->spr[SPR_BOOKE_MAS2] = env->spr[SPR_BOOKE_MAS4] & MAS4_WIMGED_MASK;
1625 env->spr[SPR_BOOKE_MAS3] = 0;
1626 env->spr[SPR_BOOKE_MAS6] = 0;
1627 env->spr[SPR_BOOKE_MAS7] = 0;
1628
1629 /* AS */
1630 if (((rw == 2) && msr_ir) || ((rw != 2) && msr_dr)) {
1631 env->spr[SPR_BOOKE_MAS1] |= MAS1_TS;
1632 env->spr[SPR_BOOKE_MAS6] |= MAS6_SAS;
1633 }
1634
1635 env->spr[SPR_BOOKE_MAS1] |= MAS1_VALID;
1636 env->spr[SPR_BOOKE_MAS2] |= address & MAS2_EPN_MASK;
1637
1638 switch (env->spr[SPR_BOOKE_MAS4] & MAS4_TIDSELD_PIDZ) {
1639 case MAS4_TIDSELD_PID0:
1640 env->spr[SPR_BOOKE_MAS1] |= env->spr[SPR_BOOKE_PID] << MAS1_TID_SHIFT;
1641 break;
1642 case MAS4_TIDSELD_PID1:
1643 env->spr[SPR_BOOKE_MAS1] |= env->spr[SPR_BOOKE_PID1] << MAS1_TID_SHIFT;
1644 break;
1645 case MAS4_TIDSELD_PID2:
1646 env->spr[SPR_BOOKE_MAS1] |= env->spr[SPR_BOOKE_PID2] << MAS1_TID_SHIFT;
1647 break;
1648 }
1649
1650 env->spr[SPR_BOOKE_MAS6] |= env->spr[SPR_BOOKE_PID] << 16;
1651
1652 /* next victim logic */
1653 env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_ESEL_SHIFT;
1654 env->last_way++;
1655 env->last_way &= booke206_tlb_ways(env, 0) - 1;
1656 env->spr[SPR_BOOKE_MAS0] |= env->last_way << MAS0_NV_SHIFT;
1657 }
1658
1659 /* Perform address translation */
1660 int cpu_ppc_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
1661 int mmu_idx)
1662 {
1663 mmu_ctx_t ctx;
1664 int access_type;
1665 int ret = 0;
1666
1667 if (rw == 2) {
1668 /* code access */
1669 rw = 0;
1670 access_type = ACCESS_CODE;
1671 } else {
1672 /* data access */
1673 access_type = env->access_type;
1674 }
1675 ret = get_physical_address(env, &ctx, address, rw, access_type);
1676 if (ret == 0) {
1677 tlb_set_page(env, address & TARGET_PAGE_MASK,
1678 ctx.raddr & TARGET_PAGE_MASK, ctx.prot,
1679 mmu_idx, TARGET_PAGE_SIZE);
1680 ret = 0;
1681 } else if (ret < 0) {
1682 LOG_MMU_STATE(env);
1683 if (access_type == ACCESS_CODE) {
1684 switch (ret) {
1685 case -1:
1686 /* No matches in page tables or TLB */
1687 switch (env->mmu_model) {
1688 case POWERPC_MMU_SOFT_6xx:
1689 env->exception_index = POWERPC_EXCP_IFTLB;
1690 env->error_code = 1 << 18;
1691 env->spr[SPR_IMISS] = address;
1692 env->spr[SPR_ICMP] = 0x80000000 | ctx.ptem;
1693 goto tlb_miss;
1694 case POWERPC_MMU_SOFT_74xx:
1695 env->exception_index = POWERPC_EXCP_IFTLB;
1696 goto tlb_miss_74xx;
1697 case POWERPC_MMU_SOFT_4xx:
1698 case POWERPC_MMU_SOFT_4xx_Z:
1699 env->exception_index = POWERPC_EXCP_ITLB;
1700 env->error_code = 0;
1701 env->spr[SPR_40x_DEAR] = address;
1702 env->spr[SPR_40x_ESR] = 0x00000000;
1703 break;
1704 case POWERPC_MMU_32B:
1705 case POWERPC_MMU_601:
1706 #if defined(TARGET_PPC64)
1707 case POWERPC_MMU_620:
1708 case POWERPC_MMU_64B:
1709 case POWERPC_MMU_2_06:
1710 #endif
1711 env->exception_index = POWERPC_EXCP_ISI;
1712 env->error_code = 0x40000000;
1713 break;
1714 case POWERPC_MMU_BOOKE206:
1715 booke206_update_mas_tlb_miss(env, address, rw);
1716 /* fall through */
1717 case POWERPC_MMU_BOOKE:
1718 env->exception_index = POWERPC_EXCP_ITLB;
1719 env->error_code = 0;
1720 env->spr[SPR_BOOKE_DEAR] = address;
1721 return -1;
1722 case POWERPC_MMU_MPC8xx:
1723 /* XXX: TODO */
1724 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1725 break;
1726 case POWERPC_MMU_REAL:
1727 cpu_abort(env, "PowerPC in real mode should never raise "
1728 "any MMU exceptions\n");
1729 return -1;
1730 default:
1731 cpu_abort(env, "Unknown or invalid MMU model\n");
1732 return -1;
1733 }
1734 break;
1735 case -2:
1736 /* Access rights violation */
1737 env->exception_index = POWERPC_EXCP_ISI;
1738 env->error_code = 0x08000000;
1739 break;
1740 case -3:
1741 /* No execute protection violation */
1742 if ((env->mmu_model == POWERPC_MMU_BOOKE) ||
1743 (env->mmu_model == POWERPC_MMU_BOOKE206)) {
1744 env->spr[SPR_BOOKE_ESR] = 0x00000000;
1745 }
1746 env->exception_index = POWERPC_EXCP_ISI;
1747 env->error_code = 0x10000000;
1748 break;
1749 case -4:
1750 /* Direct store exception */
1751 /* No code fetch is allowed in direct-store areas */
1752 env->exception_index = POWERPC_EXCP_ISI;
1753 env->error_code = 0x10000000;
1754 break;
1755 #if defined(TARGET_PPC64)
1756 case -5:
1757 /* No match in segment table */
1758 if (env->mmu_model == POWERPC_MMU_620) {
1759 env->exception_index = POWERPC_EXCP_ISI;
1760 /* XXX: this might be incorrect */
1761 env->error_code = 0x40000000;
1762 } else {
1763 env->exception_index = POWERPC_EXCP_ISEG;
1764 env->error_code = 0;
1765 }
1766 break;
1767 #endif
1768 }
1769 } else {
1770 switch (ret) {
1771 case -1:
1772 /* No matches in page tables or TLB */
1773 switch (env->mmu_model) {
1774 case POWERPC_MMU_SOFT_6xx:
1775 if (rw == 1) {
1776 env->exception_index = POWERPC_EXCP_DSTLB;
1777 env->error_code = 1 << 16;
1778 } else {
1779 env->exception_index = POWERPC_EXCP_DLTLB;
1780 env->error_code = 0;
1781 }
1782 env->spr[SPR_DMISS] = address;
1783 env->spr[SPR_DCMP] = 0x80000000 | ctx.ptem;
1784 tlb_miss:
1785 env->error_code |= ctx.key << 19;
1786 env->spr[SPR_HASH1] = env->htab_base +
1787 get_pteg_offset(env, ctx.hash[0], HASH_PTE_SIZE_32);
1788 env->spr[SPR_HASH2] = env->htab_base +
1789 get_pteg_offset(env, ctx.hash[1], HASH_PTE_SIZE_32);
1790 break;
1791 case POWERPC_MMU_SOFT_74xx:
1792 if (rw == 1) {
1793 env->exception_index = POWERPC_EXCP_DSTLB;
1794 } else {
1795 env->exception_index = POWERPC_EXCP_DLTLB;
1796 }
1797 tlb_miss_74xx:
1798 /* Implement LRU algorithm */
1799 env->error_code = ctx.key << 19;
1800 env->spr[SPR_TLBMISS] = (address & ~((target_ulong)0x3)) |
1801 ((env->last_way + 1) & (env->nb_ways - 1));
1802 env->spr[SPR_PTEHI] = 0x80000000 | ctx.ptem;
1803 break;
1804 case POWERPC_MMU_SOFT_4xx:
1805 case POWERPC_MMU_SOFT_4xx_Z:
1806 env->exception_index = POWERPC_EXCP_DTLB;
1807 env->error_code = 0;
1808 env->spr[SPR_40x_DEAR] = address;
1809 if (rw)
1810 env->spr[SPR_40x_ESR] = 0x00800000;
1811 else
1812 env->spr[SPR_40x_ESR] = 0x00000000;
1813 break;
1814 case POWERPC_MMU_32B:
1815 case POWERPC_MMU_601:
1816 #if defined(TARGET_PPC64)
1817 case POWERPC_MMU_620:
1818 case POWERPC_MMU_64B:
1819 case POWERPC_MMU_2_06:
1820 #endif
1821 env->exception_index = POWERPC_EXCP_DSI;
1822 env->error_code = 0;
1823 env->spr[SPR_DAR] = address;
1824 if (rw == 1)
1825 env->spr[SPR_DSISR] = 0x42000000;
1826 else
1827 env->spr[SPR_DSISR] = 0x40000000;
1828 break;
1829 case POWERPC_MMU_MPC8xx:
1830 /* XXX: TODO */
1831 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
1832 break;
1833 case POWERPC_MMU_BOOKE206:
1834 booke206_update_mas_tlb_miss(env, address, rw);
1835 /* fall through */
1836 case POWERPC_MMU_BOOKE:
1837 env->exception_index = POWERPC_EXCP_DTLB;
1838 env->error_code = 0;
1839 env->spr[SPR_BOOKE_DEAR] = address;
1840 env->spr[SPR_BOOKE_ESR] = rw ? ESR_ST : 0;
1841 return -1;
1842 case POWERPC_MMU_REAL:
1843 cpu_abort(env, "PowerPC in real mode should never raise "
1844 "any MMU exceptions\n");
1845 return -1;
1846 default:
1847 cpu_abort(env, "Unknown or invalid MMU model\n");
1848 return -1;
1849 }
1850 break;
1851 case -2:
1852 /* Access rights violation */
1853 env->exception_index = POWERPC_EXCP_DSI;
1854 env->error_code = 0;
1855 if (env->mmu_model == POWERPC_MMU_SOFT_4xx
1856 || env->mmu_model == POWERPC_MMU_SOFT_4xx_Z) {
1857 env->spr[SPR_40x_DEAR] = address;
1858 if (rw) {
1859 env->spr[SPR_40x_ESR] |= 0x00800000;
1860 }
1861 } else if ((env->mmu_model == POWERPC_MMU_BOOKE) ||
1862 (env->mmu_model == POWERPC_MMU_BOOKE206)) {
1863 env->spr[SPR_BOOKE_DEAR] = address;
1864 env->spr[SPR_BOOKE_ESR] = rw ? ESR_ST : 0;
1865 } else {
1866 env->spr[SPR_DAR] = address;
1867 if (rw == 1) {
1868 env->spr[SPR_DSISR] = 0x0A000000;
1869 } else {
1870 env->spr[SPR_DSISR] = 0x08000000;
1871 }
1872 }
1873 break;
1874 case -4:
1875 /* Direct store exception */
1876 switch (access_type) {
1877 case ACCESS_FLOAT:
1878 /* Floating point load/store */
1879 env->exception_index = POWERPC_EXCP_ALIGN;
1880 env->error_code = POWERPC_EXCP_ALIGN_FP;
1881 env->spr[SPR_DAR] = address;
1882 break;
1883 case ACCESS_RES:
1884 /* lwarx, ldarx or stwcx. */
1885 env->exception_index = POWERPC_EXCP_DSI;
1886 env->error_code = 0;
1887 env->spr[SPR_DAR] = address;
1888 if (rw == 1)
1889 env->spr[SPR_DSISR] = 0x06000000;
1890 else
1891 env->spr[SPR_DSISR] = 0x04000000;
1892 break;
1893 case ACCESS_EXT:
1894 /* eciwx or ecowx */
1895 env->exception_index = POWERPC_EXCP_DSI;
1896 env->error_code = 0;
1897 env->spr[SPR_DAR] = address;
1898 if (rw == 1)
1899 env->spr[SPR_DSISR] = 0x06100000;
1900 else
1901 env->spr[SPR_DSISR] = 0x04100000;
1902 break;
1903 default:
1904 printf("DSI: invalid exception (%d)\n", ret);
1905 env->exception_index = POWERPC_EXCP_PROGRAM;
1906 env->error_code =
1907 POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL;
1908 env->spr[SPR_DAR] = address;
1909 break;
1910 }
1911 break;
1912 #if defined(TARGET_PPC64)
1913 case -5:
1914 /* No match in segment table */
1915 if (env->mmu_model == POWERPC_MMU_620) {
1916 env->exception_index = POWERPC_EXCP_DSI;
1917 env->error_code = 0;
1918 env->spr[SPR_DAR] = address;
1919 /* XXX: this might be incorrect */
1920 if (rw == 1)
1921 env->spr[SPR_DSISR] = 0x42000000;
1922 else
1923 env->spr[SPR_DSISR] = 0x40000000;
1924 } else {
1925 env->exception_index = POWERPC_EXCP_DSEG;
1926 env->error_code = 0;
1927 env->spr[SPR_DAR] = address;
1928 }
1929 break;
1930 #endif
1931 }
1932 }
1933 #if 0
1934 printf("%s: set exception to %d %02x\n", __func__,
1935 env->exception, env->error_code);
1936 #endif
1937 ret = 1;
1938 }
1939
1940 return ret;
1941 }
1942
1943 /*****************************************************************************/
1944 /* BATs management */
1945 #if !defined(FLUSH_ALL_TLBS)
1946 static inline void do_invalidate_BAT(CPUPPCState *env, target_ulong BATu,
1947 target_ulong mask)
1948 {
1949 target_ulong base, end, page;
1950
1951 base = BATu & ~0x0001FFFF;
1952 end = base + mask + 0x00020000;
1953 LOG_BATS("Flush BAT from " TARGET_FMT_lx " to " TARGET_FMT_lx " ("
1954 TARGET_FMT_lx ")\n", base, end, mask);
1955 for (page = base; page != end; page += TARGET_PAGE_SIZE)
1956 tlb_flush_page(env, page);
1957 LOG_BATS("Flush done\n");
1958 }
1959 #endif
1960
1961 static inline void dump_store_bat(CPUPPCState *env, char ID, int ul, int nr,
1962 target_ulong value)
1963 {
1964 LOG_BATS("Set %cBAT%d%c to " TARGET_FMT_lx " (" TARGET_FMT_lx ")\n", ID,
1965 nr, ul == 0 ? 'u' : 'l', value, env->nip);
1966 }
1967
1968 void ppc_store_ibatu (CPUPPCState *env, int nr, target_ulong value)
1969 {
1970 target_ulong mask;
1971
1972 dump_store_bat(env, 'I', 0, nr, value);
1973 if (env->IBAT[0][nr] != value) {
1974 mask = (value << 15) & 0x0FFE0000UL;
1975 #if !defined(FLUSH_ALL_TLBS)
1976 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1977 #endif
1978 /* When storing valid upper BAT, mask BEPI and BRPN
1979 * and invalidate all TLBs covered by this BAT
1980 */
1981 mask = (value << 15) & 0x0FFE0000UL;
1982 env->IBAT[0][nr] = (value & 0x00001FFFUL) |
1983 (value & ~0x0001FFFFUL & ~mask);
1984 env->IBAT[1][nr] = (env->IBAT[1][nr] & 0x0000007B) |
1985 (env->IBAT[1][nr] & ~0x0001FFFF & ~mask);
1986 #if !defined(FLUSH_ALL_TLBS)
1987 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
1988 #else
1989 tlb_flush(env, 1);
1990 #endif
1991 }
1992 }
1993
1994 void ppc_store_ibatl (CPUPPCState *env, int nr, target_ulong value)
1995 {
1996 dump_store_bat(env, 'I', 1, nr, value);
1997 env->IBAT[1][nr] = value;
1998 }
1999
2000 void ppc_store_dbatu (CPUPPCState *env, int nr, target_ulong value)
2001 {
2002 target_ulong mask;
2003
2004 dump_store_bat(env, 'D', 0, nr, value);
2005 if (env->DBAT[0][nr] != value) {
2006 /* When storing valid upper BAT, mask BEPI and BRPN
2007 * and invalidate all TLBs covered by this BAT
2008 */
2009 mask = (value << 15) & 0x0FFE0000UL;
2010 #if !defined(FLUSH_ALL_TLBS)
2011 do_invalidate_BAT(env, env->DBAT[0][nr], mask);
2012 #endif
2013 mask = (value << 15) & 0x0FFE0000UL;
2014 env->DBAT[0][nr] = (value & 0x00001FFFUL) |
2015 (value & ~0x0001FFFFUL & ~mask);
2016 env->DBAT[1][nr] = (env->DBAT[1][nr] & 0x0000007B) |
2017 (env->DBAT[1][nr] & ~0x0001FFFF & ~mask);
2018 #if !defined(FLUSH_ALL_TLBS)
2019 do_invalidate_BAT(env, env->DBAT[0][nr], mask);
2020 #else
2021 tlb_flush(env, 1);
2022 #endif
2023 }
2024 }
2025
2026 void ppc_store_dbatl (CPUPPCState *env, int nr, target_ulong value)
2027 {
2028 dump_store_bat(env, 'D', 1, nr, value);
2029 env->DBAT[1][nr] = value;
2030 }
2031
2032 void ppc_store_ibatu_601 (CPUPPCState *env, int nr, target_ulong value)
2033 {
2034 target_ulong mask;
2035 #if defined(FLUSH_ALL_TLBS)
2036 int do_inval;
2037 #endif
2038
2039 dump_store_bat(env, 'I', 0, nr, value);
2040 if (env->IBAT[0][nr] != value) {
2041 #if defined(FLUSH_ALL_TLBS)
2042 do_inval = 0;
2043 #endif
2044 mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL;
2045 if (env->IBAT[1][nr] & 0x40) {
2046 /* Invalidate BAT only if it is valid */
2047 #if !defined(FLUSH_ALL_TLBS)
2048 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
2049 #else
2050 do_inval = 1;
2051 #endif
2052 }
2053 /* When storing valid upper BAT, mask BEPI and BRPN
2054 * and invalidate all TLBs covered by this BAT
2055 */
2056 env->IBAT[0][nr] = (value & 0x00001FFFUL) |
2057 (value & ~0x0001FFFFUL & ~mask);
2058 env->DBAT[0][nr] = env->IBAT[0][nr];
2059 if (env->IBAT[1][nr] & 0x40) {
2060 #if !defined(FLUSH_ALL_TLBS)
2061 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
2062 #else
2063 do_inval = 1;
2064 #endif
2065 }
2066 #if defined(FLUSH_ALL_TLBS)
2067 if (do_inval)
2068 tlb_flush(env, 1);
2069 #endif
2070 }
2071 }
2072
2073 void ppc_store_ibatl_601 (CPUPPCState *env, int nr, target_ulong value)
2074 {
2075 target_ulong mask;
2076 #if defined(FLUSH_ALL_TLBS)
2077 int do_inval;
2078 #endif
2079
2080 dump_store_bat(env, 'I', 1, nr, value);
2081 if (env->IBAT[1][nr] != value) {
2082 #if defined(FLUSH_ALL_TLBS)
2083 do_inval = 0;
2084 #endif
2085 if (env->IBAT[1][nr] & 0x40) {
2086 #if !defined(FLUSH_ALL_TLBS)
2087 mask = (env->IBAT[1][nr] << 17) & 0x0FFE0000UL;
2088 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
2089 #else
2090 do_inval = 1;
2091 #endif
2092 }
2093 if (value & 0x40) {
2094 #if !defined(FLUSH_ALL_TLBS)
2095 mask = (value << 17) & 0x0FFE0000UL;
2096 do_invalidate_BAT(env, env->IBAT[0][nr], mask);
2097 #else
2098 do_inval = 1;
2099 #endif
2100 }
2101 env->IBAT[1][nr] = value;
2102 env->DBAT[1][nr] = value;
2103 #if defined(FLUSH_ALL_TLBS)
2104 if (do_inval)
2105 tlb_flush(env, 1);
2106 #endif
2107 }
2108 }
2109
2110 /*****************************************************************************/
2111 /* TLB management */
2112 void ppc_tlb_invalidate_all (CPUPPCState *env)
2113 {
2114 switch (env->mmu_model) {
2115 case POWERPC_MMU_SOFT_6xx:
2116 case POWERPC_MMU_SOFT_74xx:
2117 ppc6xx_tlb_invalidate_all(env);
2118 break;
2119 case POWERPC_MMU_SOFT_4xx:
2120 case POWERPC_MMU_SOFT_4xx_Z:
2121 ppc4xx_tlb_invalidate_all(env);
2122 break;
2123 case POWERPC_MMU_REAL:
2124 cpu_abort(env, "No TLB for PowerPC 4xx in real mode\n");
2125 break;
2126 case POWERPC_MMU_MPC8xx:
2127 /* XXX: TODO */
2128 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
2129 break;
2130 case POWERPC_MMU_BOOKE:
2131 tlb_flush(env, 1);
2132 break;
2133 case POWERPC_MMU_BOOKE206:
2134 booke206_flush_tlb(env, -1, 0);
2135 break;
2136 case POWERPC_MMU_32B:
2137 case POWERPC_MMU_601:
2138 #if defined(TARGET_PPC64)
2139 case POWERPC_MMU_620:
2140 case POWERPC_MMU_64B:
2141 case POWERPC_MMU_2_06:
2142 #endif /* defined(TARGET_PPC64) */
2143 tlb_flush(env, 1);
2144 break;
2145 default:
2146 /* XXX: TODO */
2147 cpu_abort(env, "Unknown MMU model\n");
2148 break;
2149 }
2150 }
2151
2152 void ppc_tlb_invalidate_one (CPUPPCState *env, target_ulong addr)
2153 {
2154 #if !defined(FLUSH_ALL_TLBS)
2155 addr &= TARGET_PAGE_MASK;
2156 switch (env->mmu_model) {
2157 case POWERPC_MMU_SOFT_6xx:
2158 case POWERPC_MMU_SOFT_74xx:
2159 ppc6xx_tlb_invalidate_virt(env, addr, 0);
2160 if (env->id_tlbs == 1)
2161 ppc6xx_tlb_invalidate_virt(env, addr, 1);
2162 break;
2163 case POWERPC_MMU_SOFT_4xx:
2164 case POWERPC_MMU_SOFT_4xx_Z:
2165 ppc4xx_tlb_invalidate_virt(env, addr, env->spr[SPR_40x_PID]);
2166 break;
2167 case POWERPC_MMU_REAL:
2168 cpu_abort(env, "No TLB for PowerPC 4xx in real mode\n");
2169 break;
2170 case POWERPC_MMU_MPC8xx:
2171 /* XXX: TODO */
2172 cpu_abort(env, "MPC8xx MMU model is not implemented\n");
2173 break;
2174 case POWERPC_MMU_BOOKE:
2175 /* XXX: TODO */
2176 cpu_abort(env, "BookE MMU model is not implemented\n");
2177 break;
2178 case POWERPC_MMU_BOOKE206:
2179 /* XXX: TODO */
2180 cpu_abort(env, "BookE 2.06 MMU model is not implemented\n");
2181 break;
2182 case POWERPC_MMU_32B:
2183 case POWERPC_MMU_601:
2184 /* tlbie invalidate TLBs for all segments */
2185 addr &= ~((target_ulong)-1ULL << 28);
2186 /* XXX: this case should be optimized,
2187 * giving a mask to tlb_flush_page
2188 */
2189 tlb_flush_page(env, addr | (0x0 << 28));
2190 tlb_flush_page(env, addr | (0x1 << 28));
2191 tlb_flush_page(env, addr | (0x2 << 28));
2192 tlb_flush_page(env, addr | (0x3 << 28));
2193 tlb_flush_page(env, addr | (0x4 << 28));
2194 tlb_flush_page(env, addr | (0x5 << 28));
2195 tlb_flush_page(env, addr | (0x6 << 28));
2196 tlb_flush_page(env, addr | (0x7 << 28));
2197 tlb_flush_page(env, addr | (0x8 << 28));
2198 tlb_flush_page(env, addr | (0x9 << 28));
2199 tlb_flush_page(env, addr | (0xA << 28));
2200 tlb_flush_page(env, addr | (0xB << 28));
2201 tlb_flush_page(env, addr | (0xC << 28));
2202 tlb_flush_page(env, addr | (0xD << 28));
2203 tlb_flush_page(env, addr | (0xE << 28));
2204 tlb_flush_page(env, addr | (0xF << 28));
2205 break;
2206 #if defined(TARGET_PPC64)
2207 case POWERPC_MMU_620:
2208 case POWERPC_MMU_64B:
2209 case POWERPC_MMU_2_06:
2210 /* tlbie invalidate TLBs for all segments */
2211 /* XXX: given the fact that there are too many segments to invalidate,
2212 * and we still don't have a tlb_flush_mask(env, n, mask) in Qemu,
2213 * we just invalidate all TLBs
2214 */
2215 tlb_flush(env, 1);
2216 break;
2217 #endif /* defined(TARGET_PPC64) */
2218 default:
2219 /* XXX: TODO */
2220 cpu_abort(env, "Unknown MMU model\n");
2221 break;
2222 }
2223 #else
2224 ppc_tlb_invalidate_all(env);
2225 #endif
2226 }
2227
2228 /*****************************************************************************/
2229 /* Special registers manipulation */
2230 #if defined(TARGET_PPC64)
2231 void ppc_store_asr (CPUPPCState *env, target_ulong value)
2232 {
2233 if (env->asr != value) {
2234 env->asr = value;
2235 tlb_flush(env, 1);
2236 }
2237 }
2238 #endif
2239
2240 void ppc_store_sdr1 (CPUPPCState *env, target_ulong value)
2241 {
2242 LOG_MMU("%s: " TARGET_FMT_lx "\n", __func__, value);
2243 if (env->spr[SPR_SDR1] != value) {
2244 env->spr[SPR_SDR1] = value;
2245 #if defined(TARGET_PPC64)
2246 if (env->mmu_model & POWERPC_MMU_64) {
2247 target_ulong htabsize = value & SDR_64_HTABSIZE;
2248
2249 if (htabsize > 28) {
2250 fprintf(stderr, "Invalid HTABSIZE 0x" TARGET_FMT_lx
2251 " stored in SDR1\n", htabsize);
2252 htabsize = 28;
2253 }
2254 env->htab_mask = (1ULL << (htabsize + 18)) - 1;
2255 env->htab_base = value & SDR_64_HTABORG;
2256 } else
2257 #endif /* defined(TARGET_PPC64) */
2258 {
2259 /* FIXME: Should check for valid HTABMASK values */
2260 env->htab_mask = ((value & SDR_32_HTABMASK) << 16) | 0xFFFF;
2261 env->htab_base = value & SDR_32_HTABORG;
2262 }
2263 tlb_flush(env, 1);
2264 }
2265 }
2266
2267 #if defined(TARGET_PPC64)
2268 target_ulong ppc_load_sr (CPUPPCState *env, int slb_nr)
2269 {
2270 // XXX
2271 return 0;
2272 }
2273 #endif
2274
2275 void ppc_store_sr (CPUPPCState *env, int srnum, target_ulong value)
2276 {
2277 LOG_MMU("%s: reg=%d " TARGET_FMT_lx " " TARGET_FMT_lx "\n", __func__,
2278 srnum, value, env->sr[srnum]);
2279 #if defined(TARGET_PPC64)
2280 if (env->mmu_model & POWERPC_MMU_64) {
2281 uint64_t rb = 0, rs = 0;
2282
2283 /* ESID = srnum */
2284 rb |= ((uint32_t)srnum & 0xf) << 28;
2285 /* Set the valid bit */
2286 rb |= 1 << 27;
2287 /* Index = ESID */
2288 rb |= (uint32_t)srnum;
2289
2290 /* VSID = VSID */
2291 rs |= (value & 0xfffffff) << 12;
2292 /* flags = flags */
2293 rs |= ((value >> 27) & 0xf) << 8;
2294
2295 ppc_store_slb(env, rb, rs);
2296 } else
2297 #endif
2298 if (env->sr[srnum] != value) {
2299 env->sr[srnum] = value;
2300 /* Invalidating 256MB of virtual memory in 4kB pages is way longer than
2301 flusing the whole TLB. */
2302 #if !defined(FLUSH_ALL_TLBS) && 0
2303 {
2304 target_ulong page, end;
2305 /* Invalidate 256 MB of virtual memory */
2306 page = (16 << 20) * srnum;
2307 end = page + (16 << 20);
2308 for (; page != end; page += TARGET_PAGE_SIZE)
2309 tlb_flush_page(env, page);
2310 }
2311 #else
2312 tlb_flush(env, 1);
2313 #endif
2314 }
2315 }
2316 #endif /* !defined (CONFIG_USER_ONLY) */
2317
2318 /* GDBstub can read and write MSR... */
2319 void ppc_store_msr (CPUPPCState *env, target_ulong value)
2320 {
2321 hreg_store_msr(env, value, 0);
2322 }
2323
2324 /*****************************************************************************/
2325 /* Exception processing */
2326 #if defined (CONFIG_USER_ONLY)
2327 void do_interrupt (CPUState *env)
2328 {
2329 env->exception_index = POWERPC_EXCP_NONE;
2330 env->error_code = 0;
2331 }
2332
2333 void ppc_hw_interrupt (CPUState *env)
2334 {
2335 env->exception_index = POWERPC_EXCP_NONE;
2336 env->error_code = 0;
2337 }
2338 #else /* defined (CONFIG_USER_ONLY) */
2339 static inline void dump_syscall(CPUState *env)
2340 {
2341 qemu_log_mask(CPU_LOG_INT, "syscall r0=%016" PRIx64 " r3=%016" PRIx64
2342 " r4=%016" PRIx64 " r5=%016" PRIx64 " r6=%016" PRIx64
2343 " nip=" TARGET_FMT_lx "\n",
2344 ppc_dump_gpr(env, 0), ppc_dump_gpr(env, 3),
2345 ppc_dump_gpr(env, 4), ppc_dump_gpr(env, 5),
2346 ppc_dump_gpr(env, 6), env->nip);
2347 }
2348
2349 /* Note that this function should be greatly optimized
2350 * when called with a constant excp, from ppc_hw_interrupt
2351 */
2352 static inline void powerpc_excp(CPUState *env, int excp_model, int excp)
2353 {
2354 target_ulong msr, new_msr, vector;
2355 int srr0, srr1, asrr0, asrr1;
2356 int lpes0, lpes1, lev;
2357
2358 if (0) {
2359 /* XXX: find a suitable condition to enable the hypervisor mode */
2360 lpes0 = (env->spr[SPR_LPCR] >> 1) & 1;
2361 lpes1 = (env->spr[SPR_LPCR] >> 2) & 1;
2362 } else {
2363 /* Those values ensure we won't enter the hypervisor mode */
2364 lpes0 = 0;
2365 lpes1 = 1;
2366 }
2367
2368 qemu_log_mask(CPU_LOG_INT, "Raise exception at " TARGET_FMT_lx
2369 " => %08x (%02x)\n", env->nip, excp, env->error_code);
2370
2371 /* new srr1 value excluding must-be-zero bits */
2372 msr = env->msr & ~0x783f0000ULL;
2373
2374 /* new interrupt handler msr */
2375 new_msr = env->msr & ((target_ulong)1 << MSR_ME);
2376
2377 /* target registers */
2378 srr0 = SPR_SRR0;
2379 srr1 = SPR_SRR1;
2380 asrr0 = -1;
2381 asrr1 = -1;
2382
2383 switch (excp) {
2384 case POWERPC_EXCP_NONE:
2385 /* Should never happen */
2386 return;
2387 case POWERPC_EXCP_CRITICAL: /* Critical input */
2388 switch (excp_model) {
2389 case POWERPC_EXCP_40x:
2390 srr0 = SPR_40x_SRR2;
2391 srr1 = SPR_40x_SRR3;
2392 break;
2393 case POWERPC_EXCP_BOOKE:
2394 srr0 = SPR_BOOKE_CSRR0;
2395 srr1 = SPR_BOOKE_CSRR1;
2396 break;
2397 case POWERPC_EXCP_G2:
2398 break;
2399 default:
2400 goto excp_invalid;
2401 }
2402 goto store_next;
2403 case POWERPC_EXCP_MCHECK: /* Machine check exception */
2404 if (msr_me == 0) {
2405 /* Machine check exception is not enabled.
2406 * Enter checkstop state.
2407 */
2408 if (qemu_log_enabled()) {
2409 qemu_log("Machine check while not allowed. "
2410 "Entering checkstop state\n");
2411 } else {
2412 fprintf(stderr, "Machine check while not allowed. "
2413 "Entering checkstop state\n");
2414 }
2415 env->halted = 1;
2416 env->interrupt_request |= CPU_INTERRUPT_EXITTB;
2417 }
2418 if (0) {
2419 /* XXX: find a suitable condition to enable the hypervisor mode */
2420 new_msr |= (target_ulong)MSR_HVB;
2421 }
2422
2423 /* machine check exceptions don't have ME set */
2424 new_msr &= ~((target_ulong)1 << MSR_ME);
2425
2426 /* XXX: should also have something loaded in DAR / DSISR */
2427 switch (excp_model) {
2428 case POWERPC_EXCP_40x:
2429 srr0 = SPR_40x_SRR2;
2430 srr1 = SPR_40x_SRR3;
2431 break;
2432 case POWERPC_EXCP_BOOKE:
2433 srr0 = SPR_BOOKE_MCSRR0;
2434 srr1 = SPR_BOOKE_MCSRR1;
2435 asrr0 = SPR_BOOKE_CSRR0;
2436 asrr1 = SPR_BOOKE_CSRR1;
2437 break;
2438 default:
2439 break;
2440 }
2441 goto store_next;
2442 case POWERPC_EXCP_DSI: /* Data storage exception */
2443 LOG_EXCP("DSI exception: DSISR=" TARGET_FMT_lx" DAR=" TARGET_FMT_lx
2444 "\n", env->spr[SPR_DSISR], env->spr[SPR_DAR]);
2445 if (lpes1 == 0)
2446 new_msr |= (target_ulong)MSR_HVB;
2447 goto store_next;
2448 case POWERPC_EXCP_ISI: /* Instruction storage exception */
2449 LOG_EXCP("ISI exception: msr=" TARGET_FMT_lx ", nip=" TARGET_FMT_lx
2450 "\n", msr, env->nip);
2451 if (lpes1 == 0)
2452 new_msr |= (target_ulong)MSR_HVB;
2453 msr |= env->error_code;
2454 goto store_next;
2455 case POWERPC_EXCP_EXTERNAL: /* External input */
2456 if (lpes0 == 1)
2457 new_msr |= (target_ulong)MSR_HVB;
2458 goto store_next;
2459 case POWERPC_EXCP_ALIGN: /* Alignment exception */
2460 if (lpes1 == 0)
2461 new_msr |= (target_ulong)MSR_HVB;
2462 /* XXX: this is false */
2463 /* Get rS/rD and rA from faulting opcode */
2464 env->spr[SPR_DSISR] |= (ldl_code((env->nip - 4)) & 0x03FF0000) >> 16;
2465 goto store_current;
2466 case POWERPC_EXCP_PROGRAM: /* Program exception */
2467 switch (env->error_code & ~0xF) {
2468 case POWERPC_EXCP_FP:
2469 if ((msr_fe0 == 0 && msr_fe1 == 0) || msr_fp == 0) {
2470 LOG_EXCP("Ignore floating point exception\n");
2471 env->exception_index = POWERPC_EXCP_NONE;
2472 env->error_code = 0;
2473 return;
2474 }
2475 if (lpes1 == 0)
2476 new_msr |= (target_ulong)MSR_HVB;
2477 msr |= 0x00100000;
2478 if (msr_fe0 == msr_fe1)
2479 goto store_next;
2480 msr |= 0x00010000;
2481 break;
2482 case POWERPC_EXCP_INVAL:
2483 LOG_EXCP("Invalid instruction at " TARGET_FMT_lx "\n", env->nip);
2484 if (lpes1 == 0)
2485 new_msr |= (target_ulong)MSR_HVB;
2486 msr |= 0x00080000;
2487 env->spr[SPR_BOOKE_ESR] = ESR_PIL;
2488 break;
2489 case POWERPC_EXCP_PRIV:
2490 if (lpes1 == 0)
2491 new_msr |= (target_ulong)MSR_HVB;
2492 msr |= 0x00040000;
2493 env->spr[SPR_BOOKE_ESR] = ESR_PPR;
2494 break;
2495 case POWERPC_EXCP_TRAP:
2496 if (lpes1 == 0)
2497 new_msr |= (target_ulong)MSR_HVB;
2498 msr |= 0x00020000;
2499 env->spr[SPR_BOOKE_ESR] = ESR_PTR;
2500 break;
2501 default:
2502 /* Should never occur */
2503 cpu_abort(env, "Invalid program exception %d. Aborting\n",
2504 env->error_code);
2505 break;
2506 }
2507 goto store_current;
2508 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
2509 if (lpes1 == 0)
2510 new_msr |= (target_ulong)MSR_HVB;
2511 goto store_current;
2512 case POWERPC_EXCP_SYSCALL: /* System call exception */
2513 dump_syscall(env);
2514 lev = env->error_code;
2515 if ((lev == 1) && cpu_ppc_hypercall) {
2516 cpu_ppc_hypercall(env);
2517 return;
2518 }
2519 if (lev == 1 || (lpes0 == 0 && lpes1 == 0))
2520 new_msr |= (target_ulong)MSR_HVB;
2521 goto store_next;
2522 case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
2523 goto store_current;
2524 case POWERPC_EXCP_DECR: /* Decrementer exception */
2525 if (lpes1 == 0)
2526 new_msr |= (target_ulong)MSR_HVB;
2527 goto store_next;
2528 case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
2529 /* FIT on 4xx */
2530 LOG_EXCP("FIT exception\n");
2531 goto store_next;
2532 case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
2533 LOG_EXCP("WDT exception\n");
2534 switch (excp_model) {
2535 case POWERPC_EXCP_BOOKE:
2536 srr0 = SPR_BOOKE_CSRR0;
2537 srr1 = SPR_BOOKE_CSRR1;
2538 break;
2539 default:
2540 break;
2541 }
2542 goto store_next;
2543 case POWERPC_EXCP_DTLB: /* Data TLB error */
2544 goto store_next;
2545 case POWERPC_EXCP_ITLB: /* Instruction TLB error */
2546 goto store_next;
2547 case POWERPC_EXCP_DEBUG: /* Debug interrupt */
2548 switch (excp_model) {
2549 case POWERPC_EXCP_BOOKE:
2550 srr0 = SPR_BOOKE_DSRR0;
2551 srr1 = SPR_BOOKE_DSRR1;
2552 asrr0 = SPR_BOOKE_CSRR0;
2553 asrr1 = SPR_BOOKE_CSRR1;
2554 break;
2555 default:
2556 break;
2557 }
2558 /* XXX: TODO */
2559 cpu_abort(env, "Debug exception is not implemented yet !\n");
2560 goto store_next;
2561 case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavailable */
2562 env->spr[SPR_BOOKE_ESR] = ESR_SPV;
2563 goto store_current;
2564 case POWERPC_EXCP_EFPDI: /* Embedded floating-point data interrupt */
2565 /* XXX: TODO */
2566 cpu_abort(env, "Embedded floating point data exception "
2567 "is not implemented yet !\n");
2568 env->spr[SPR_BOOKE_ESR] = ESR_SPV;
2569 goto store_next;
2570 case POWERPC_EXCP_EFPRI: /* Embedded floating-point round interrupt */
2571 /* XXX: TODO */
2572 cpu_abort(env, "Embedded floating point round exception "
2573 "is not implemented yet !\n");
2574 env->spr[SPR_BOOKE_ESR] = ESR_SPV;
2575 goto store_next;
2576 case POWERPC_EXCP_EPERFM: /* Embedded performance monitor interrupt */
2577 /* XXX: TODO */
2578 cpu_abort(env,
2579 "Performance counter exception is not implemented yet !\n");
2580 goto store_next;
2581 case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
2582 /* XXX: TODO */
2583 cpu_abort(env,
2584 "Embedded doorbell interrupt is not implemented yet !\n");
2585 goto store_next;
2586 case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
2587 switch (excp_model) {
2588 case POWERPC_EXCP_BOOKE:
2589 srr0 = SPR_BOOKE_CSRR0;
2590 srr1 = SPR_BOOKE_CSRR1;
2591 break;
2592 default:
2593 break;
2594 }
2595 /* XXX: TODO */
2596 cpu_abort(env, "Embedded doorbell critical interrupt "
2597 "is not implemented yet !\n");
2598 goto store_next;
2599 case POWERPC_EXCP_RESET: /* System reset exception */
2600 if (msr_pow) {
2601 /* indicate that we resumed from power save mode */
2602 msr |= 0x10000;
2603 } else {
2604 new_msr &= ~((target_ulong)1 << MSR_ME);
2605 }
2606
2607 if (0) {
2608 /* XXX: find a suitable condition to enable the hypervisor mode */
2609 new_msr |= (target_ulong)MSR_HVB;
2610 }
2611 goto store_next;
2612 case POWERPC_EXCP_DSEG: /* Data segment exception */
2613 if (lpes1 == 0)
2614 new_msr |= (target_ulong)MSR_HVB;
2615 goto store_next;
2616 case POWERPC_EXCP_ISEG: /* Instruction segment exception */
2617 if (lpes1 == 0)
2618 new_msr |= (target_ulong)MSR_HVB;
2619 goto store_next;
2620 case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
2621 srr0 = SPR_HSRR0;
2622 srr1 = SPR_HSRR1;
2623 new_msr |= (target_ulong)MSR_HVB;
2624 new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
2625 goto store_next;
2626 case POWERPC_EXCP_TRACE: /* Trace exception */
2627 if (lpes1 == 0)
2628 new_msr |= (target_ulong)MSR_HVB;
2629 goto store_next;
2630 case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
2631 srr0 = SPR_HSRR0;
2632 srr1 = SPR_HSRR1;
2633 new_msr |= (target_ulong)MSR_HVB;
2634 new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
2635 goto store_next;
2636 case POWERPC_EXCP_HISI: /* Hypervisor instruction storage exception */
2637 srr0 = SPR_HSRR0;
2638 srr1 = SPR_HSRR1;
2639 new_msr |= (target_ulong)MSR_HVB;
2640 new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
2641 goto store_next;
2642 case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
2643 srr0 = SPR_HSRR0;
2644 srr1 = SPR_HSRR1;
2645 new_msr |= (target_ulong)MSR_HVB;
2646 new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
2647 goto store_next;
2648 case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment exception */
2649 srr0 = SPR_HSRR0;
2650 srr1 = SPR_HSRR1;
2651 new_msr |= (target_ulong)MSR_HVB;
2652 new_msr |= env->msr & ((target_ulong)1 << MSR_RI);
2653 goto store_next;
2654 case POWERPC_EXCP_VPU: /* Vector unavailable exception */
2655 if (lpes1 == 0)
2656 new_msr |= (target_ulong)MSR_HVB;
2657 goto store_current;
2658 case POWERPC_EXCP_PIT: /* Programmable interval timer interrupt */
2659 LOG_EXCP("PIT exception\n");
2660 goto store_next;
2661 case POWERPC_EXCP_IO: /* IO error exception */
2662 /* XXX: TODO */
2663 cpu_abort(env, "601 IO error exception is not implemented yet !\n");
2664 goto store_next;
2665 case POWERPC_EXCP_RUNM: /* Run mode exception */
2666 /* XXX: TODO */
2667 cpu_abort(env, "601 run mode exception is not implemented yet !\n");
2668 goto store_next;
2669 case POWERPC_EXCP_EMUL: /* Emulation trap exception */
2670 /* XXX: TODO */
2671 cpu_abort(env, "602 emulation trap exception "
2672 "is not implemented yet !\n");
2673 goto store_next;
2674 case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
2675 if (lpes1 == 0) /* XXX: check this */
2676 new_msr |= (target_ulong)MSR_HVB;
2677 switch (excp_model) {
2678 case POWERPC_EXCP_602:
2679 case POWERPC_EXCP_603:
2680 case POWERPC_EXCP_603E:
2681 case POWERPC_EXCP_G2:
2682 goto tlb_miss_tgpr;
2683 case POWERPC_EXCP_7x5:
2684 goto tlb_miss;
2685 case POWERPC_EXCP_74xx:
2686 goto tlb_miss_74xx;
2687 default:
2688 cpu_abort(env, "Invalid instruction TLB miss exception\n");
2689 break;
2690 }
2691 break;
2692 case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
2693 if (lpes1 == 0) /* XXX: check this */
2694 new_msr |= (target_ulong)MSR_HVB;
2695 switch (excp_model) {
2696 case POWERPC_EXCP_602:
2697 case POWERPC_EXCP_603:
2698 case POWERPC_EXCP_603E:
2699 case POWERPC_EXCP_G2:
2700 goto tlb_miss_tgpr;
2701 case POWERPC_EXCP_7x5:
2702 goto tlb_miss;
2703 case POWERPC_EXCP_74xx:
2704 goto tlb_miss_74xx;
2705 default:
2706 cpu_abort(env, "Invalid data load TLB miss exception\n");
2707 break;
2708 }
2709 break;
2710 case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
2711 if (lpes1 == 0) /* XXX: check this */
2712 new_msr |= (target_ulong)MSR_HVB;
2713 switch (excp_model) {
2714 case POWERPC_EXCP_602:
2715 case POWERPC_EXCP_603:
2716 case POWERPC_EXCP_603E:
2717 case POWERPC_EXCP_G2:
2718 tlb_miss_tgpr:
2719 /* Swap temporary saved registers with GPRs */
2720 if (!(new_msr & ((target_ulong)1 << MSR_TGPR))) {
2721 new_msr |= (target_ulong)1 << MSR_TGPR;
2722 hreg_swap_gpr_tgpr(env);
2723 }
2724 goto tlb_miss;
2725 case POWERPC_EXCP_7x5:
2726 tlb_miss:
2727 #if defined (DEBUG_SOFTWARE_TLB)
2728 if (qemu_log_enabled()) {
2729 const char *es;
2730 target_ulong *miss, *cmp;
2731 int en;
2732 if (excp == POWERPC_EXCP_IFTLB) {
2733 es = "I";
2734 en = 'I';
2735 miss = &env->spr[SPR_IMISS];
2736 cmp = &env->spr[SPR_ICMP];
2737 } else {
2738 if (excp == POWERPC_EXCP_DLTLB)
2739 es = "DL";
2740 else
2741 es = "DS";
2742 en = 'D';
2743 miss = &env->spr[SPR_DMISS];
2744 cmp = &env->spr[SPR_DCMP];
2745 }
2746 qemu_log("6xx %sTLB miss: %cM " TARGET_FMT_lx " %cC "
2747 TARGET_FMT_lx " H1 " TARGET_FMT_lx " H2 "
2748 TARGET_FMT_lx " %08x\n", es, en, *miss, en, *cmp,
2749 env->spr[SPR_HASH1], env->spr[SPR_HASH2],
2750 env->error_code);
2751 }
2752 #endif
2753 msr |= env->crf[0] << 28;
2754 msr |= env->error_code; /* key, D/I, S/L bits */
2755 /* Set way using a LRU mechanism */
2756 msr |= ((env->last_way + 1) & (env->nb_ways - 1)) << 17;
2757 break;
2758 case POWERPC_EXCP_74xx:
2759 tlb_miss_74xx:
2760 #if defined (DEBUG_SOFTWARE_TLB)
2761 if (qemu_log_enabled()) {
2762 const char *es;
2763 target_ulong *miss, *cmp;
2764 int en;
2765 if (excp == POWERPC_EXCP_IFTLB) {
2766 es = "I";
2767 en = 'I';
2768 miss = &env->spr[SPR_TLBMISS];
2769 cmp = &env->spr[SPR_PTEHI];
2770 } else {
2771 if (excp == POWERPC_EXCP_DLTLB)
2772 es = "DL";
2773 else
2774 es = "DS";
2775 en = 'D';
2776 miss = &env->spr[SPR_TLBMISS];
2777 cmp = &env->spr[SPR_PTEHI];
2778 }
2779 qemu_log("74xx %sTLB miss: %cM " TARGET_FMT_lx " %cC "
2780 TARGET_FMT_lx " %08x\n", es, en, *miss, en, *cmp,
2781 env->error_code);
2782 }
2783 #endif
2784 msr |= env->error_code; /* key bit */
2785 break;
2786 default:
2787 cpu_abort(env, "Invalid data store TLB miss exception\n");
2788 break;
2789 }
2790 goto store_next;
2791 case POWERPC_EXCP_FPA: /* Floating-point assist exception */
2792 /* XXX: TODO */
2793 cpu_abort(env, "Floating point assist exception "
2794 "is not implemented yet !\n");
2795 goto store_next;
2796 case POWERPC_EXCP_DABR: /* Data address breakpoint */
2797 /* XXX: TODO */
2798 cpu_abort(env, "DABR exception is not implemented yet !\n");
2799 goto store_next;
2800 case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
2801 /* XXX: TODO */
2802 cpu_abort(env, "IABR exception is not implemented yet !\n");
2803 goto store_next;
2804 case POWERPC_EXCP_SMI: /* System management interrupt */
2805 /* XXX: TODO */
2806 cpu_abort(env, "SMI exception is not implemented yet !\n");
2807 goto store_next;
2808 case POWERPC_EXCP_THERM: /* Thermal interrupt */
2809 /* XXX: TODO */
2810 cpu_abort(env, "Thermal management exception "
2811 "is not implemented yet !\n");
2812 goto store_next;
2813 case POWERPC_EXCP_PERFM: /* Embedded performance monitor interrupt */
2814 if (lpes1 == 0)
2815 new_msr |= (target_ulong)MSR_HVB;
2816 /* XXX: TODO */
2817 cpu_abort(env,
2818 "Performance counter exception is not implemented yet !\n");
2819 goto store_next;
2820 case POWERPC_EXCP_VPUA: /* Vector assist exception */
2821 /* XXX: TODO */
2822 cpu_abort(env, "VPU assist exception is not implemented yet !\n");
2823 goto store_next;
2824 case POWERPC_EXCP_SOFTP: /* Soft patch exception */
2825 /* XXX: TODO */
2826 cpu_abort(env,
2827 "970 soft-patch exception is not implemented yet !\n");
2828 goto store_next;
2829 case POWERPC_EXCP_MAINT: /* Maintenance exception */
2830 /* XXX: TODO */
2831 cpu_abort(env,
2832 "970 maintenance exception is not implemented yet !\n");
2833 goto store_next;
2834 case POWERPC_EXCP_MEXTBR: /* Maskable external breakpoint */
2835 /* XXX: TODO */
2836 cpu_abort(env, "Maskable external exception "
2837 "is not implemented yet !\n");
2838 goto store_next;
2839 case POWERPC_EXCP_NMEXTBR: /* Non maskable external breakpoint */
2840 /* XXX: TODO */
2841 cpu_abort(env, "Non maskable external exception "
2842 "is not implemented yet !\n");
2843 goto store_next;
2844 default:
2845 excp_invalid:
2846 cpu_abort(env, "Invalid PowerPC exception %d. Aborting\n", excp);
2847 break;
2848 store_current:
2849 /* save current instruction location */
2850 env->spr[srr0] = env->nip - 4;
2851 break;
2852 store_next:
2853 /* save next instruction location */
2854 env->spr[srr0] = env->nip;
2855 break;
2856 }
2857 /* Save MSR */
2858 env->spr[srr1] = msr;
2859 /* If any alternate SRR register are defined, duplicate saved values */
2860 if (asrr0 != -1)
2861 env->spr[asrr0] = env->spr[srr0];
2862 if (asrr1 != -1)
2863 env->spr[asrr1] = env->spr[srr1];
2864 /* If we disactivated any translation, flush TLBs */
2865 if (new_msr & ((1 << MSR_IR) | (1 << MSR_DR)))
2866 tlb_flush(env, 1);
2867
2868 if (msr_ile) {
2869 new_msr |= (target_ulong)1 << MSR_LE;
2870 }
2871
2872 /* Jump to handler */
2873 vector = env->excp_vectors[excp];
2874 if (vector == (target_ulong)-1ULL) {
2875 cpu_abort(env, "Raised an exception without defined vector %d\n",
2876 excp);
2877 }
2878 vector |= env->excp_prefix;
2879 #if defined(TARGET_PPC64)
2880 if (excp_model == POWERPC_EXCP_BOOKE) {
2881 if (!msr_icm) {
2882 vector = (uint32_t)vector;
2883 } else {
2884 new_msr |= (target_ulong)1 << MSR_CM;
2885 }
2886 } else {
2887 if (!msr_isf && !(env->mmu_model & POWERPC_MMU_64)) {
2888 vector = (uint32_t)vector;
2889 } else {
2890 new_msr |= (target_ulong)1 << MSR_SF;
2891 }
2892 }
2893 #endif
2894 /* XXX: we don't use hreg_store_msr here as already have treated
2895 * any special case that could occur. Just store MSR and update hflags
2896 */
2897 env->msr = new_msr & env->msr_mask;
2898 hreg_compute_hflags(env);
2899 env->nip = vector;
2900 /* Reset exception state */
2901 env->exception_index = POWERPC_EXCP_NONE;
2902 env->error_code = 0;
2903
2904 if ((env->mmu_model == POWERPC_MMU_BOOKE) ||
2905 (env->mmu_model == POWERPC_MMU_BOOKE206)) {
2906 /* XXX: The BookE changes address space when switching modes,
2907 we should probably implement that as different MMU indexes,
2908 but for the moment we do it the slow way and flush all. */
2909 tlb_flush(env, 1);
2910 }
2911 }
2912
2913 void do_interrupt (CPUState *env)
2914 {
2915 powerpc_excp(env, env->excp_model, env->exception_index);
2916 }
2917
2918 void ppc_hw_interrupt (CPUPPCState *env)
2919 {
2920 int hdice;
2921
2922 #if 0
2923 qemu_log_mask(CPU_LOG_INT, "%s: %p pending %08x req %08x me %d ee %d\n",
2924 __func__, env, env->pending_interrupts,
2925 env->interrupt_request, (int)msr_me, (int)msr_ee);
2926 #endif
2927 /* External reset */
2928 if (env->pending_interrupts & (1 << PPC_INTERRUPT_RESET)) {
2929 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_RESET);
2930 powerpc_excp(env, env->excp_model, POWERPC_EXCP_RESET);
2931 return;
2932 }
2933 /* Machine check exception */
2934 if (env->pending_interrupts & (1 << PPC_INTERRUPT_MCK)) {
2935 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_MCK);
2936 powerpc_excp(env, env->excp_model, POWERPC_EXCP_MCHECK);
2937 return;
2938 }
2939 #if 0 /* TODO */
2940 /* External debug exception */
2941 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DEBUG)) {
2942 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DEBUG);
2943 powerpc_excp(env, env->excp_model, POWERPC_EXCP_DEBUG);
2944 return;
2945 }
2946 #endif
2947 if (0) {
2948 /* XXX: find a suitable condition to enable the hypervisor mode */
2949 hdice = env->spr[SPR_LPCR] & 1;
2950 } else {
2951 hdice = 0;
2952 }
2953 if ((msr_ee != 0 || msr_hv == 0 || msr_pr != 0) && hdice != 0) {
2954 /* Hypervisor decrementer exception */
2955 if (env->pending_interrupts & (1 << PPC_INTERRUPT_HDECR)) {
2956 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_HDECR);
2957 powerpc_excp(env, env->excp_model, POWERPC_EXCP_HDECR);
2958 return;
2959 }
2960 }
2961 if (msr_ce != 0) {
2962 /* External critical interrupt */
2963 if (env->pending_interrupts & (1 << PPC_INTERRUPT_CEXT)) {
2964 /* Taking a critical external interrupt does not clear the external
2965 * critical interrupt status
2966 */
2967 #if 0
2968 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_CEXT);
2969 #endif
2970 powerpc_excp(env, env->excp_model, POWERPC_EXCP_CRITICAL);
2971 return;
2972 }
2973 }
2974 if (msr_ee != 0) {
2975 /* Watchdog timer on embedded PowerPC */
2976 if (env->pending_interrupts & (1 << PPC_INTERRUPT_WDT)) {
2977 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_WDT);
2978 powerpc_excp(env, env->excp_model, POWERPC_EXCP_WDT);
2979 return;
2980 }
2981 if (env->pending_interrupts & (1 << PPC_INTERRUPT_CDOORBELL)) {
2982 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_CDOORBELL);
2983 powerpc_excp(env, env->excp_model, POWERPC_EXCP_DOORCI);
2984 return;
2985 }
2986 /* Fixed interval timer on embedded PowerPC */
2987 if (env->pending_interrupts & (1 << PPC_INTERRUPT_FIT)) {
2988 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_FIT);
2989 powerpc_excp(env, env->excp_model, POWERPC_EXCP_FIT);
2990 return;
2991 }
2992 /* Programmable interval timer on embedded PowerPC */
2993 if (env->pending_interrupts & (1 << PPC_INTERRUPT_PIT)) {
2994 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PIT);
2995 powerpc_excp(env, env->excp_model, POWERPC_EXCP_PIT);
2996 return;
2997 }
2998 /* Decrementer exception */
2999 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DECR)) {
3000 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DECR);
3001 powerpc_excp(env, env->excp_model, POWERPC_EXCP_DECR);
3002 return;
3003 }
3004 /* External interrupt */
3005 if (env->pending_interrupts & (1 << PPC_INTERRUPT_EXT)) {
3006 /* Taking an external interrupt does not clear the external
3007 * interrupt status
3008 */
3009 #if 0
3010 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_EXT);
3011 #endif
3012 powerpc_excp(env, env->excp_model, POWERPC_EXCP_EXTERNAL);
3013 return;
3014 }
3015 if (env->pending_interrupts & (1 << PPC_INTERRUPT_DOORBELL)) {
3016 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_DOORBELL);
3017 powerpc_excp(env, env->excp_model, POWERPC_EXCP_DOORI);
3018 return;
3019 }
3020 if (env->pending_interrupts & (1 << PPC_INTERRUPT_PERFM)) {
3021 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_PERFM);
3022 powerpc_excp(env, env->excp_model, POWERPC_EXCP_PERFM);
3023 return;
3024 }
3025 /* Thermal interrupt */
3026 if (env->pending_interrupts & (1 << PPC_INTERRUPT_THERM)) {
3027 env->pending_interrupts &= ~(1 << PPC_INTERRUPT_THERM);
3028 powerpc_excp(env, env->excp_model, POWERPC_EXCP_THERM);
3029 return;
3030 }
3031 }
3032 }
3033 #endif /* !CONFIG_USER_ONLY */
3034
3035 void cpu_dump_rfi (target_ulong RA, target_ulong msr)
3036 {
3037 qemu_log("Return from exception at " TARGET_FMT_lx " with flags "
3038 TARGET_FMT_lx "\n", RA, msr);
3039 }
3040
3041 void cpu_reset(CPUPPCState *env)
3042 {
3043 target_ulong msr;
3044
3045 if (qemu_loglevel_mask(CPU_LOG_RESET)) {
3046 qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
3047 log_cpu_state(env, 0);
3048 }
3049
3050 msr = (target_ulong)0;
3051 if (0) {
3052 /* XXX: find a suitable condition to enable the hypervisor mode */
3053 msr |= (target_ulong)MSR_HVB;
3054 }
3055 msr |= (target_ulong)0 << MSR_AP; /* TO BE CHECKED */
3056 msr |= (target_ulong)0 << MSR_SA; /* TO BE CHECKED */
3057 msr |= (target_ulong)1 << MSR_EP;
3058 #if defined (DO_SINGLE_STEP) && 0
3059 /* Single step trace mode */
3060 msr |= (target_ulong)1 << MSR_SE;
3061 msr |= (target_ulong)1 << MSR_BE;
3062 #endif
3063 #if defined(CONFIG_USER_ONLY)
3064 msr |= (target_ulong)1 << MSR_FP; /* Allow floating point usage */
3065 msr |= (target_ulong)1 << MSR_VR; /* Allow altivec usage */
3066 msr |= (target_ulong)1 << MSR_SPE; /* Allow SPE usage */
3067 msr |= (target_ulong)1 << MSR_PR;
3068 #else
3069 env->excp_prefix = env->hreset_excp_prefix;
3070 env->nip = env->hreset_vector | env->excp_prefix;
3071 if (env->mmu_model != POWERPC_MMU_REAL)
3072 ppc_tlb_invalidate_all(env);
3073 #endif
3074 env->msr = msr & env->msr_mask;
3075 #if defined(TARGET_PPC64)
3076 if (env->mmu_model & POWERPC_MMU_64)
3077 env->msr |= (1ULL << MSR_SF);
3078 #endif
3079 hreg_compute_hflags(env);
3080 env->reserve_addr = (target_ulong)-1ULL;
3081 /* Be sure no exception or interrupt is pending */
3082 env->pending_interrupts = 0;
3083 env->exception_index = POWERPC_EXCP_NONE;
3084 env->error_code = 0;
3085 /* Flush all TLBs */
3086 tlb_flush(env, 1);
3087 }
3088
3089 CPUPPCState *cpu_ppc_init (const char *cpu_model)
3090 {
3091 CPUPPCState *env;
3092 const ppc_def_t *def;
3093
3094 def = cpu_ppc_find_by_name(cpu_model);
3095 if (!def)
3096 return NULL;
3097
3098 env = g_malloc0(sizeof(CPUPPCState));
3099 cpu_exec_init(env);
3100 if (tcg_enabled()) {
3101 ppc_translate_init();
3102 }
3103 env->cpu_model_str = cpu_model;
3104 cpu_ppc_register_internal(env, def);
3105
3106 qemu_init_vcpu(env);
3107
3108 return env;
3109 }
3110
3111 void cpu_ppc_close (CPUPPCState *env)
3112 {
3113 /* Should also remove all opcode tables... */
3114 g_free(env);
3115 }