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7d13299d FB |
1 | /* |
2 | * i386 emulator main execution loop | |
3 | * | |
66321a11 | 4 | * Copyright (c) 2003-2005 Fabrice Bellard |
7d13299d | 5 | * |
3ef693a0 FB |
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. | |
7d13299d | 10 | * |
3ef693a0 FB |
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. | |
7d13299d | 15 | * |
3ef693a0 FB |
16 | * You should have received a copy of the GNU Lesser General Public |
17 | * License along with this library; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
7d13299d | 19 | */ |
e4533c7a | 20 | #include "config.h" |
93ac68bc | 21 | #include "exec.h" |
956034d7 | 22 | #include "disas.h" |
7d13299d | 23 | |
fbf9eeb3 FB |
24 | #if !defined(CONFIG_SOFTMMU) |
25 | #undef EAX | |
26 | #undef ECX | |
27 | #undef EDX | |
28 | #undef EBX | |
29 | #undef ESP | |
30 | #undef EBP | |
31 | #undef ESI | |
32 | #undef EDI | |
33 | #undef EIP | |
34 | #include <signal.h> | |
35 | #include <sys/ucontext.h> | |
36 | #endif | |
37 | ||
36bdbe54 FB |
38 | int tb_invalidated_flag; |
39 | ||
dc99065b | 40 | //#define DEBUG_EXEC |
9de5e440 | 41 | //#define DEBUG_SIGNAL |
7d13299d | 42 | |
93ac68bc | 43 | #if defined(TARGET_ARM) || defined(TARGET_SPARC) |
e4533c7a FB |
44 | /* XXX: unify with i386 target */ |
45 | void cpu_loop_exit(void) | |
46 | { | |
47 | longjmp(env->jmp_env, 1); | |
48 | } | |
49 | #endif | |
3475187d FB |
50 | #ifndef TARGET_SPARC |
51 | #define reg_T2 | |
52 | #endif | |
e4533c7a | 53 | |
fbf9eeb3 FB |
54 | /* exit the current TB from a signal handler. The host registers are |
55 | restored in a state compatible with the CPU emulator | |
56 | */ | |
57 | void cpu_resume_from_signal(CPUState *env1, void *puc) | |
58 | { | |
59 | #if !defined(CONFIG_SOFTMMU) | |
60 | struct ucontext *uc = puc; | |
61 | #endif | |
62 | ||
63 | env = env1; | |
64 | ||
65 | /* XXX: restore cpu registers saved in host registers */ | |
66 | ||
67 | #if !defined(CONFIG_SOFTMMU) | |
68 | if (puc) { | |
69 | /* XXX: use siglongjmp ? */ | |
70 | sigprocmask(SIG_SETMASK, &uc->uc_sigmask, NULL); | |
71 | } | |
72 | #endif | |
73 | longjmp(env->jmp_env, 1); | |
74 | } | |
75 | ||
8a40a180 FB |
76 | |
77 | static TranslationBlock *tb_find_slow(target_ulong pc, | |
78 | target_ulong cs_base, | |
79 | unsigned int flags) | |
80 | { | |
81 | TranslationBlock *tb, **ptb1; | |
82 | int code_gen_size; | |
83 | unsigned int h; | |
84 | target_ulong phys_pc, phys_page1, phys_page2, virt_page2; | |
85 | uint8_t *tc_ptr; | |
86 | ||
87 | spin_lock(&tb_lock); | |
88 | ||
89 | tb_invalidated_flag = 0; | |
90 | ||
91 | regs_to_env(); /* XXX: do it just before cpu_gen_code() */ | |
92 | ||
93 | /* find translated block using physical mappings */ | |
94 | phys_pc = get_phys_addr_code(env, pc); | |
95 | phys_page1 = phys_pc & TARGET_PAGE_MASK; | |
96 | phys_page2 = -1; | |
97 | h = tb_phys_hash_func(phys_pc); | |
98 | ptb1 = &tb_phys_hash[h]; | |
99 | for(;;) { | |
100 | tb = *ptb1; | |
101 | if (!tb) | |
102 | goto not_found; | |
103 | if (tb->pc == pc && | |
104 | tb->page_addr[0] == phys_page1 && | |
105 | tb->cs_base == cs_base && | |
106 | tb->flags == flags) { | |
107 | /* check next page if needed */ | |
108 | if (tb->page_addr[1] != -1) { | |
109 | virt_page2 = (pc & TARGET_PAGE_MASK) + | |
110 | TARGET_PAGE_SIZE; | |
111 | phys_page2 = get_phys_addr_code(env, virt_page2); | |
112 | if (tb->page_addr[1] == phys_page2) | |
113 | goto found; | |
114 | } else { | |
115 | goto found; | |
116 | } | |
117 | } | |
118 | ptb1 = &tb->phys_hash_next; | |
119 | } | |
120 | not_found: | |
121 | /* if no translated code available, then translate it now */ | |
122 | tb = tb_alloc(pc); | |
123 | if (!tb) { | |
124 | /* flush must be done */ | |
125 | tb_flush(env); | |
126 | /* cannot fail at this point */ | |
127 | tb = tb_alloc(pc); | |
128 | /* don't forget to invalidate previous TB info */ | |
15388002 | 129 | tb_invalidated_flag = 1; |
8a40a180 FB |
130 | } |
131 | tc_ptr = code_gen_ptr; | |
132 | tb->tc_ptr = tc_ptr; | |
133 | tb->cs_base = cs_base; | |
134 | tb->flags = flags; | |
135 | cpu_gen_code(env, tb, CODE_GEN_MAX_SIZE, &code_gen_size); | |
136 | code_gen_ptr = (void *)(((unsigned long)code_gen_ptr + code_gen_size + CODE_GEN_ALIGN - 1) & ~(CODE_GEN_ALIGN - 1)); | |
137 | ||
138 | /* check next page if needed */ | |
139 | virt_page2 = (pc + tb->size - 1) & TARGET_PAGE_MASK; | |
140 | phys_page2 = -1; | |
141 | if ((pc & TARGET_PAGE_MASK) != virt_page2) { | |
142 | phys_page2 = get_phys_addr_code(env, virt_page2); | |
143 | } | |
144 | tb_link_phys(tb, phys_pc, phys_page2); | |
145 | ||
146 | found: | |
8a40a180 FB |
147 | /* we add the TB in the virtual pc hash table */ |
148 | env->tb_jmp_cache[tb_jmp_cache_hash_func(pc)] = tb; | |
149 | spin_unlock(&tb_lock); | |
150 | return tb; | |
151 | } | |
152 | ||
153 | static inline TranslationBlock *tb_find_fast(void) | |
154 | { | |
155 | TranslationBlock *tb; | |
156 | target_ulong cs_base, pc; | |
157 | unsigned int flags; | |
158 | ||
159 | /* we record a subset of the CPU state. It will | |
160 | always be the same before a given translated block | |
161 | is executed. */ | |
162 | #if defined(TARGET_I386) | |
163 | flags = env->hflags; | |
164 | flags |= (env->eflags & (IOPL_MASK | TF_MASK | VM_MASK)); | |
165 | cs_base = env->segs[R_CS].base; | |
166 | pc = cs_base + env->eip; | |
167 | #elif defined(TARGET_ARM) | |
168 | flags = env->thumb | (env->vfp.vec_len << 1) | |
b5ff1b31 FB |
169 | | (env->vfp.vec_stride << 4); |
170 | if ((env->uncached_cpsr & CPSR_M) != ARM_CPU_MODE_USR) | |
171 | flags |= (1 << 6); | |
40f137e1 PB |
172 | if (env->vfp.xregs[ARM_VFP_FPEXC] & (1 << 30)) |
173 | flags |= (1 << 7); | |
8a40a180 FB |
174 | cs_base = 0; |
175 | pc = env->regs[15]; | |
176 | #elif defined(TARGET_SPARC) | |
177 | #ifdef TARGET_SPARC64 | |
178 | flags = (env->pstate << 2) | ((env->lsu & (DMMU_E | IMMU_E)) >> 2); | |
179 | #else | |
180 | flags = env->psrs | ((env->mmuregs[0] & (MMU_E | MMU_NF)) << 1); | |
181 | #endif | |
182 | cs_base = env->npc; | |
183 | pc = env->pc; | |
184 | #elif defined(TARGET_PPC) | |
185 | flags = (msr_pr << MSR_PR) | (msr_fp << MSR_FP) | | |
186 | (msr_se << MSR_SE) | (msr_le << MSR_LE); | |
187 | cs_base = 0; | |
188 | pc = env->nip; | |
189 | #elif defined(TARGET_MIPS) | |
56b19403 | 190 | flags = env->hflags & (MIPS_HFLAG_TMASK | MIPS_HFLAG_BMASK); |
cc9442b9 | 191 | cs_base = 0; |
8a40a180 | 192 | pc = env->PC; |
fdf9b3e8 FB |
193 | #elif defined(TARGET_SH4) |
194 | flags = env->sr & (SR_MD | SR_RB); | |
195 | cs_base = 0; /* XXXXX */ | |
196 | pc = env->pc; | |
8a40a180 FB |
197 | #else |
198 | #error unsupported CPU | |
199 | #endif | |
200 | tb = env->tb_jmp_cache[tb_jmp_cache_hash_func(pc)]; | |
201 | if (__builtin_expect(!tb || tb->pc != pc || tb->cs_base != cs_base || | |
202 | tb->flags != flags, 0)) { | |
203 | tb = tb_find_slow(pc, cs_base, flags); | |
15388002 FB |
204 | /* Note: we do it here to avoid a gcc bug on Mac OS X when |
205 | doing it in tb_find_slow */ | |
206 | if (tb_invalidated_flag) { | |
207 | /* as some TB could have been invalidated because | |
208 | of memory exceptions while generating the code, we | |
209 | must recompute the hash index here */ | |
210 | T0 = 0; | |
211 | } | |
8a40a180 FB |
212 | } |
213 | return tb; | |
214 | } | |
215 | ||
216 | ||
7d13299d FB |
217 | /* main execution loop */ |
218 | ||
e4533c7a | 219 | int cpu_exec(CPUState *env1) |
7d13299d | 220 | { |
3475187d FB |
221 | int saved_T0, saved_T1; |
222 | #if defined(reg_T2) | |
223 | int saved_T2; | |
224 | #endif | |
e4533c7a | 225 | CPUState *saved_env; |
3475187d | 226 | #if defined(TARGET_I386) |
04369ff2 FB |
227 | #ifdef reg_EAX |
228 | int saved_EAX; | |
229 | #endif | |
230 | #ifdef reg_ECX | |
231 | int saved_ECX; | |
232 | #endif | |
233 | #ifdef reg_EDX | |
234 | int saved_EDX; | |
235 | #endif | |
236 | #ifdef reg_EBX | |
237 | int saved_EBX; | |
238 | #endif | |
239 | #ifdef reg_ESP | |
240 | int saved_ESP; | |
241 | #endif | |
242 | #ifdef reg_EBP | |
243 | int saved_EBP; | |
244 | #endif | |
245 | #ifdef reg_ESI | |
246 | int saved_ESI; | |
247 | #endif | |
248 | #ifdef reg_EDI | |
249 | int saved_EDI; | |
8c6939c0 | 250 | #endif |
3475187d FB |
251 | #elif defined(TARGET_SPARC) |
252 | #if defined(reg_REGWPTR) | |
253 | uint32_t *saved_regwptr; | |
254 | #endif | |
255 | #endif | |
8c6939c0 FB |
256 | #ifdef __sparc__ |
257 | int saved_i7, tmp_T0; | |
04369ff2 | 258 | #endif |
8a40a180 | 259 | int ret, interrupt_request; |
7d13299d | 260 | void (*gen_func)(void); |
8a40a180 | 261 | TranslationBlock *tb; |
c27004ec | 262 | uint8_t *tc_ptr; |
8c6939c0 | 263 | |
5a1e3cfc FB |
264 | #if defined(TARGET_I386) |
265 | /* handle exit of HALTED state */ | |
266 | if (env1->hflags & HF_HALTED_MASK) { | |
267 | /* disable halt condition */ | |
268 | if ((env1->interrupt_request & CPU_INTERRUPT_HARD) && | |
269 | (env1->eflags & IF_MASK)) { | |
270 | env1->hflags &= ~HF_HALTED_MASK; | |
271 | } else { | |
272 | return EXCP_HALTED; | |
e80e1cc4 FB |
273 | } |
274 | } | |
275 | #elif defined(TARGET_PPC) | |
50443c98 | 276 | if (env1->halted) { |
e80e1cc4 FB |
277 | if (env1->msr[MSR_EE] && |
278 | (env1->interrupt_request & | |
279 | (CPU_INTERRUPT_HARD | CPU_INTERRUPT_TIMER))) { | |
50443c98 | 280 | env1->halted = 0; |
e80e1cc4 FB |
281 | } else { |
282 | return EXCP_HALTED; | |
5a1e3cfc FB |
283 | } |
284 | } | |
ba3c64fb FB |
285 | #elif defined(TARGET_SPARC) |
286 | if (env1->halted) { | |
287 | if ((env1->interrupt_request & CPU_INTERRUPT_HARD) && | |
288 | (env1->psret != 0)) { | |
289 | env1->halted = 0; | |
290 | } else { | |
291 | return EXCP_HALTED; | |
292 | } | |
293 | } | |
9332f9da FB |
294 | #elif defined(TARGET_ARM) |
295 | if (env1->halted) { | |
296 | /* An interrupt wakes the CPU even if the I and F CPSR bits are | |
297 | set. */ | |
298 | if (env1->interrupt_request | |
299 | & (CPU_INTERRUPT_FIQ | CPU_INTERRUPT_HARD)) { | |
300 | env1->halted = 0; | |
301 | } else { | |
302 | return EXCP_HALTED; | |
303 | } | |
304 | } | |
6810e154 FB |
305 | #elif defined(TARGET_MIPS) |
306 | if (env1->halted) { | |
307 | if (env1->interrupt_request & | |
308 | (CPU_INTERRUPT_HARD | CPU_INTERRUPT_TIMER)) { | |
309 | env1->halted = 0; | |
310 | } else { | |
311 | return EXCP_HALTED; | |
312 | } | |
313 | } | |
5a1e3cfc FB |
314 | #endif |
315 | ||
6a00d601 FB |
316 | cpu_single_env = env1; |
317 | ||
7d13299d | 318 | /* first we save global registers */ |
c27004ec FB |
319 | saved_env = env; |
320 | env = env1; | |
7d13299d FB |
321 | saved_T0 = T0; |
322 | saved_T1 = T1; | |
3475187d | 323 | #if defined(reg_T2) |
e4533c7a | 324 | saved_T2 = T2; |
3475187d | 325 | #endif |
e4533c7a FB |
326 | #ifdef __sparc__ |
327 | /* we also save i7 because longjmp may not restore it */ | |
328 | asm volatile ("mov %%i7, %0" : "=r" (saved_i7)); | |
329 | #endif | |
330 | ||
331 | #if defined(TARGET_I386) | |
04369ff2 FB |
332 | #ifdef reg_EAX |
333 | saved_EAX = EAX; | |
04369ff2 FB |
334 | #endif |
335 | #ifdef reg_ECX | |
336 | saved_ECX = ECX; | |
04369ff2 FB |
337 | #endif |
338 | #ifdef reg_EDX | |
339 | saved_EDX = EDX; | |
04369ff2 FB |
340 | #endif |
341 | #ifdef reg_EBX | |
342 | saved_EBX = EBX; | |
04369ff2 FB |
343 | #endif |
344 | #ifdef reg_ESP | |
345 | saved_ESP = ESP; | |
04369ff2 FB |
346 | #endif |
347 | #ifdef reg_EBP | |
348 | saved_EBP = EBP; | |
04369ff2 FB |
349 | #endif |
350 | #ifdef reg_ESI | |
351 | saved_ESI = ESI; | |
04369ff2 FB |
352 | #endif |
353 | #ifdef reg_EDI | |
354 | saved_EDI = EDI; | |
04369ff2 | 355 | #endif |
0d1a29f9 FB |
356 | |
357 | env_to_regs(); | |
9de5e440 | 358 | /* put eflags in CPU temporary format */ |
fc2b4c48 FB |
359 | CC_SRC = env->eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); |
360 | DF = 1 - (2 * ((env->eflags >> 10) & 1)); | |
9de5e440 | 361 | CC_OP = CC_OP_EFLAGS; |
fc2b4c48 | 362 | env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); |
e4533c7a | 363 | #elif defined(TARGET_ARM) |
93ac68bc | 364 | #elif defined(TARGET_SPARC) |
3475187d FB |
365 | #if defined(reg_REGWPTR) |
366 | saved_regwptr = REGWPTR; | |
367 | #endif | |
67867308 | 368 | #elif defined(TARGET_PPC) |
6af0bf9c | 369 | #elif defined(TARGET_MIPS) |
fdf9b3e8 FB |
370 | #elif defined(TARGET_SH4) |
371 | /* XXXXX */ | |
e4533c7a FB |
372 | #else |
373 | #error unsupported target CPU | |
374 | #endif | |
3fb2ded1 | 375 | env->exception_index = -1; |
9d27abd9 | 376 | |
7d13299d | 377 | /* prepare setjmp context for exception handling */ |
3fb2ded1 FB |
378 | for(;;) { |
379 | if (setjmp(env->jmp_env) == 0) { | |
ee8b7021 | 380 | env->current_tb = NULL; |
3fb2ded1 FB |
381 | /* if an exception is pending, we execute it here */ |
382 | if (env->exception_index >= 0) { | |
383 | if (env->exception_index >= EXCP_INTERRUPT) { | |
384 | /* exit request from the cpu execution loop */ | |
385 | ret = env->exception_index; | |
386 | break; | |
387 | } else if (env->user_mode_only) { | |
388 | /* if user mode only, we simulate a fake exception | |
389 | which will be hanlded outside the cpu execution | |
390 | loop */ | |
83479e77 | 391 | #if defined(TARGET_I386) |
3fb2ded1 FB |
392 | do_interrupt_user(env->exception_index, |
393 | env->exception_is_int, | |
394 | env->error_code, | |
395 | env->exception_next_eip); | |
83479e77 | 396 | #endif |
3fb2ded1 FB |
397 | ret = env->exception_index; |
398 | break; | |
399 | } else { | |
83479e77 | 400 | #if defined(TARGET_I386) |
3fb2ded1 FB |
401 | /* simulate a real cpu exception. On i386, it can |
402 | trigger new exceptions, but we do not handle | |
403 | double or triple faults yet. */ | |
404 | do_interrupt(env->exception_index, | |
405 | env->exception_is_int, | |
406 | env->error_code, | |
d05e66d2 | 407 | env->exception_next_eip, 0); |
ce09776b FB |
408 | #elif defined(TARGET_PPC) |
409 | do_interrupt(env); | |
6af0bf9c FB |
410 | #elif defined(TARGET_MIPS) |
411 | do_interrupt(env); | |
e95c8d51 | 412 | #elif defined(TARGET_SPARC) |
1a0c3292 | 413 | do_interrupt(env->exception_index); |
b5ff1b31 FB |
414 | #elif defined(TARGET_ARM) |
415 | do_interrupt(env); | |
fdf9b3e8 FB |
416 | #elif defined(TARGET_SH4) |
417 | do_interrupt(env); | |
83479e77 | 418 | #endif |
3fb2ded1 FB |
419 | } |
420 | env->exception_index = -1; | |
9df217a3 FB |
421 | } |
422 | #ifdef USE_KQEMU | |
423 | if (kqemu_is_ok(env) && env->interrupt_request == 0) { | |
424 | int ret; | |
425 | env->eflags = env->eflags | cc_table[CC_OP].compute_all() | (DF & DF_MASK); | |
426 | ret = kqemu_cpu_exec(env); | |
427 | /* put eflags in CPU temporary format */ | |
428 | CC_SRC = env->eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); | |
429 | DF = 1 - (2 * ((env->eflags >> 10) & 1)); | |
430 | CC_OP = CC_OP_EFLAGS; | |
431 | env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); | |
432 | if (ret == 1) { | |
433 | /* exception */ | |
434 | longjmp(env->jmp_env, 1); | |
435 | } else if (ret == 2) { | |
436 | /* softmmu execution needed */ | |
437 | } else { | |
438 | if (env->interrupt_request != 0) { | |
439 | /* hardware interrupt will be executed just after */ | |
440 | } else { | |
441 | /* otherwise, we restart */ | |
442 | longjmp(env->jmp_env, 1); | |
443 | } | |
444 | } | |
3fb2ded1 | 445 | } |
9df217a3 FB |
446 | #endif |
447 | ||
3fb2ded1 FB |
448 | T0 = 0; /* force lookup of first TB */ |
449 | for(;;) { | |
8c6939c0 | 450 | #ifdef __sparc__ |
3fb2ded1 FB |
451 | /* g1 can be modified by some libc? functions */ |
452 | tmp_T0 = T0; | |
8c6939c0 | 453 | #endif |
68a79315 | 454 | interrupt_request = env->interrupt_request; |
2e255c6b | 455 | if (__builtin_expect(interrupt_request, 0)) { |
68a79315 FB |
456 | #if defined(TARGET_I386) |
457 | /* if hardware interrupt pending, we execute it */ | |
458 | if ((interrupt_request & CPU_INTERRUPT_HARD) && | |
3f337316 FB |
459 | (env->eflags & IF_MASK) && |
460 | !(env->hflags & HF_INHIBIT_IRQ_MASK)) { | |
68a79315 | 461 | int intno; |
fbf9eeb3 | 462 | env->interrupt_request &= ~CPU_INTERRUPT_HARD; |
a541f297 | 463 | intno = cpu_get_pic_interrupt(env); |
f193c797 | 464 | if (loglevel & CPU_LOG_TB_IN_ASM) { |
68a79315 FB |
465 | fprintf(logfile, "Servicing hardware INT=0x%02x\n", intno); |
466 | } | |
d05e66d2 | 467 | do_interrupt(intno, 0, 0, 0, 1); |
907a5b26 FB |
468 | /* ensure that no TB jump will be modified as |
469 | the program flow was changed */ | |
470 | #ifdef __sparc__ | |
471 | tmp_T0 = 0; | |
472 | #else | |
473 | T0 = 0; | |
474 | #endif | |
68a79315 | 475 | } |
ce09776b | 476 | #elif defined(TARGET_PPC) |
9fddaa0c FB |
477 | #if 0 |
478 | if ((interrupt_request & CPU_INTERRUPT_RESET)) { | |
479 | cpu_ppc_reset(env); | |
480 | } | |
481 | #endif | |
482 | if (msr_ee != 0) { | |
8a40a180 | 483 | if ((interrupt_request & CPU_INTERRUPT_HARD)) { |
9fddaa0c FB |
484 | /* Raise it */ |
485 | env->exception_index = EXCP_EXTERNAL; | |
486 | env->error_code = 0; | |
ce09776b | 487 | do_interrupt(env); |
8a40a180 FB |
488 | env->interrupt_request &= ~CPU_INTERRUPT_HARD; |
489 | #ifdef __sparc__ | |
490 | tmp_T0 = 0; | |
491 | #else | |
492 | T0 = 0; | |
493 | #endif | |
494 | } else if ((interrupt_request & CPU_INTERRUPT_TIMER)) { | |
495 | /* Raise it */ | |
496 | env->exception_index = EXCP_DECR; | |
497 | env->error_code = 0; | |
498 | do_interrupt(env); | |
9fddaa0c | 499 | env->interrupt_request &= ~CPU_INTERRUPT_TIMER; |
8a40a180 FB |
500 | #ifdef __sparc__ |
501 | tmp_T0 = 0; | |
502 | #else | |
503 | T0 = 0; | |
504 | #endif | |
505 | } | |
ce09776b | 506 | } |
6af0bf9c FB |
507 | #elif defined(TARGET_MIPS) |
508 | if ((interrupt_request & CPU_INTERRUPT_HARD) && | |
509 | (env->CP0_Status & (1 << CP0St_IE)) && | |
7ebab699 | 510 | (env->CP0_Status & env->CP0_Cause & 0x0000FF00) && |
6af0bf9c FB |
511 | !(env->hflags & MIPS_HFLAG_EXL) && |
512 | !(env->hflags & MIPS_HFLAG_ERL) && | |
513 | !(env->hflags & MIPS_HFLAG_DM)) { | |
514 | /* Raise it */ | |
515 | env->exception_index = EXCP_EXT_INTERRUPT; | |
516 | env->error_code = 0; | |
517 | do_interrupt(env); | |
518 | env->interrupt_request &= ~CPU_INTERRUPT_HARD; | |
8a40a180 FB |
519 | #ifdef __sparc__ |
520 | tmp_T0 = 0; | |
521 | #else | |
522 | T0 = 0; | |
523 | #endif | |
6af0bf9c | 524 | } |
e95c8d51 | 525 | #elif defined(TARGET_SPARC) |
66321a11 FB |
526 | if ((interrupt_request & CPU_INTERRUPT_HARD) && |
527 | (env->psret != 0)) { | |
528 | int pil = env->interrupt_index & 15; | |
529 | int type = env->interrupt_index & 0xf0; | |
530 | ||
531 | if (((type == TT_EXTINT) && | |
532 | (pil == 15 || pil > env->psrpil)) || | |
533 | type != TT_EXTINT) { | |
534 | env->interrupt_request &= ~CPU_INTERRUPT_HARD; | |
535 | do_interrupt(env->interrupt_index); | |
536 | env->interrupt_index = 0; | |
8a40a180 FB |
537 | #ifdef __sparc__ |
538 | tmp_T0 = 0; | |
539 | #else | |
540 | T0 = 0; | |
541 | #endif | |
66321a11 | 542 | } |
e95c8d51 FB |
543 | } else if (interrupt_request & CPU_INTERRUPT_TIMER) { |
544 | //do_interrupt(0, 0, 0, 0, 0); | |
545 | env->interrupt_request &= ~CPU_INTERRUPT_TIMER; | |
ba3c64fb FB |
546 | } else if (interrupt_request & CPU_INTERRUPT_HALT) { |
547 | env1->halted = 1; | |
548 | return EXCP_HALTED; | |
549 | } | |
b5ff1b31 FB |
550 | #elif defined(TARGET_ARM) |
551 | if (interrupt_request & CPU_INTERRUPT_FIQ | |
552 | && !(env->uncached_cpsr & CPSR_F)) { | |
553 | env->exception_index = EXCP_FIQ; | |
554 | do_interrupt(env); | |
555 | } | |
556 | if (interrupt_request & CPU_INTERRUPT_HARD | |
557 | && !(env->uncached_cpsr & CPSR_I)) { | |
558 | env->exception_index = EXCP_IRQ; | |
559 | do_interrupt(env); | |
560 | } | |
fdf9b3e8 FB |
561 | #elif defined(TARGET_SH4) |
562 | /* XXXXX */ | |
68a79315 | 563 | #endif |
b5ff1b31 | 564 | if (env->interrupt_request & CPU_INTERRUPT_EXITTB) { |
bf3e8bf1 FB |
565 | env->interrupt_request &= ~CPU_INTERRUPT_EXITTB; |
566 | /* ensure that no TB jump will be modified as | |
567 | the program flow was changed */ | |
568 | #ifdef __sparc__ | |
569 | tmp_T0 = 0; | |
570 | #else | |
571 | T0 = 0; | |
572 | #endif | |
573 | } | |
68a79315 FB |
574 | if (interrupt_request & CPU_INTERRUPT_EXIT) { |
575 | env->interrupt_request &= ~CPU_INTERRUPT_EXIT; | |
576 | env->exception_index = EXCP_INTERRUPT; | |
577 | cpu_loop_exit(); | |
578 | } | |
3fb2ded1 | 579 | } |
7d13299d | 580 | #ifdef DEBUG_EXEC |
b5ff1b31 | 581 | if ((loglevel & CPU_LOG_TB_CPU)) { |
e4533c7a | 582 | #if defined(TARGET_I386) |
3fb2ded1 | 583 | /* restore flags in standard format */ |
fc9f715d | 584 | #ifdef reg_EAX |
3fb2ded1 | 585 | env->regs[R_EAX] = EAX; |
fc9f715d FB |
586 | #endif |
587 | #ifdef reg_EBX | |
3fb2ded1 | 588 | env->regs[R_EBX] = EBX; |
fc9f715d FB |
589 | #endif |
590 | #ifdef reg_ECX | |
3fb2ded1 | 591 | env->regs[R_ECX] = ECX; |
fc9f715d FB |
592 | #endif |
593 | #ifdef reg_EDX | |
3fb2ded1 | 594 | env->regs[R_EDX] = EDX; |
fc9f715d FB |
595 | #endif |
596 | #ifdef reg_ESI | |
3fb2ded1 | 597 | env->regs[R_ESI] = ESI; |
fc9f715d FB |
598 | #endif |
599 | #ifdef reg_EDI | |
3fb2ded1 | 600 | env->regs[R_EDI] = EDI; |
fc9f715d FB |
601 | #endif |
602 | #ifdef reg_EBP | |
3fb2ded1 | 603 | env->regs[R_EBP] = EBP; |
fc9f715d FB |
604 | #endif |
605 | #ifdef reg_ESP | |
3fb2ded1 | 606 | env->regs[R_ESP] = ESP; |
fc9f715d | 607 | #endif |
3fb2ded1 | 608 | env->eflags = env->eflags | cc_table[CC_OP].compute_all() | (DF & DF_MASK); |
7fe48483 | 609 | cpu_dump_state(env, logfile, fprintf, X86_DUMP_CCOP); |
3fb2ded1 | 610 | env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); |
e4533c7a | 611 | #elif defined(TARGET_ARM) |
7fe48483 | 612 | cpu_dump_state(env, logfile, fprintf, 0); |
93ac68bc | 613 | #elif defined(TARGET_SPARC) |
3475187d FB |
614 | REGWPTR = env->regbase + (env->cwp * 16); |
615 | env->regwptr = REGWPTR; | |
616 | cpu_dump_state(env, logfile, fprintf, 0); | |
67867308 | 617 | #elif defined(TARGET_PPC) |
7fe48483 | 618 | cpu_dump_state(env, logfile, fprintf, 0); |
6af0bf9c FB |
619 | #elif defined(TARGET_MIPS) |
620 | cpu_dump_state(env, logfile, fprintf, 0); | |
fdf9b3e8 FB |
621 | #elif defined(TARGET_SH4) |
622 | cpu_dump_state(env, logfile, fprintf, 0); | |
e4533c7a FB |
623 | #else |
624 | #error unsupported target CPU | |
625 | #endif | |
3fb2ded1 | 626 | } |
7d13299d | 627 | #endif |
8a40a180 | 628 | tb = tb_find_fast(); |
9d27abd9 | 629 | #ifdef DEBUG_EXEC |
c1135f61 | 630 | if ((loglevel & CPU_LOG_EXEC)) { |
c27004ec FB |
631 | fprintf(logfile, "Trace 0x%08lx [" TARGET_FMT_lx "] %s\n", |
632 | (long)tb->tc_ptr, tb->pc, | |
633 | lookup_symbol(tb->pc)); | |
3fb2ded1 | 634 | } |
9d27abd9 | 635 | #endif |
8c6939c0 | 636 | #ifdef __sparc__ |
3fb2ded1 | 637 | T0 = tmp_T0; |
8c6939c0 | 638 | #endif |
8a40a180 FB |
639 | /* see if we can patch the calling TB. When the TB |
640 | spans two pages, we cannot safely do a direct | |
641 | jump. */ | |
c27004ec | 642 | { |
8a40a180 | 643 | if (T0 != 0 && |
f32fc648 FB |
644 | #if USE_KQEMU |
645 | (env->kqemu_enabled != 2) && | |
646 | #endif | |
8a40a180 | 647 | tb->page_addr[1] == -1 |
bf3e8bf1 FB |
648 | #if defined(TARGET_I386) && defined(USE_CODE_COPY) |
649 | && (tb->cflags & CF_CODE_COPY) == | |
650 | (((TranslationBlock *)(T0 & ~3))->cflags & CF_CODE_COPY) | |
651 | #endif | |
652 | ) { | |
3fb2ded1 | 653 | spin_lock(&tb_lock); |
c27004ec | 654 | tb_add_jump((TranslationBlock *)(long)(T0 & ~3), T0 & 3, tb); |
97eb5b14 FB |
655 | #if defined(USE_CODE_COPY) |
656 | /* propagates the FP use info */ | |
657 | ((TranslationBlock *)(T0 & ~3))->cflags |= | |
658 | (tb->cflags & CF_FP_USED); | |
659 | #endif | |
3fb2ded1 FB |
660 | spin_unlock(&tb_lock); |
661 | } | |
c27004ec | 662 | } |
3fb2ded1 | 663 | tc_ptr = tb->tc_ptr; |
83479e77 | 664 | env->current_tb = tb; |
3fb2ded1 FB |
665 | /* execute the generated code */ |
666 | gen_func = (void *)tc_ptr; | |
8c6939c0 | 667 | #if defined(__sparc__) |
3fb2ded1 FB |
668 | __asm__ __volatile__("call %0\n\t" |
669 | "mov %%o7,%%i0" | |
670 | : /* no outputs */ | |
671 | : "r" (gen_func) | |
672 | : "i0", "i1", "i2", "i3", "i4", "i5"); | |
8c6939c0 | 673 | #elif defined(__arm__) |
3fb2ded1 FB |
674 | asm volatile ("mov pc, %0\n\t" |
675 | ".global exec_loop\n\t" | |
676 | "exec_loop:\n\t" | |
677 | : /* no outputs */ | |
678 | : "r" (gen_func) | |
679 | : "r1", "r2", "r3", "r8", "r9", "r10", "r12", "r14"); | |
bf3e8bf1 FB |
680 | #elif defined(TARGET_I386) && defined(USE_CODE_COPY) |
681 | { | |
682 | if (!(tb->cflags & CF_CODE_COPY)) { | |
97eb5b14 FB |
683 | if ((tb->cflags & CF_FP_USED) && env->native_fp_regs) { |
684 | save_native_fp_state(env); | |
685 | } | |
bf3e8bf1 FB |
686 | gen_func(); |
687 | } else { | |
97eb5b14 FB |
688 | if ((tb->cflags & CF_FP_USED) && !env->native_fp_regs) { |
689 | restore_native_fp_state(env); | |
690 | } | |
bf3e8bf1 FB |
691 | /* we work with native eflags */ |
692 | CC_SRC = cc_table[CC_OP].compute_all(); | |
693 | CC_OP = CC_OP_EFLAGS; | |
694 | asm(".globl exec_loop\n" | |
695 | "\n" | |
696 | "debug1:\n" | |
697 | " pushl %%ebp\n" | |
698 | " fs movl %10, %9\n" | |
699 | " fs movl %11, %%eax\n" | |
700 | " andl $0x400, %%eax\n" | |
701 | " fs orl %8, %%eax\n" | |
702 | " pushl %%eax\n" | |
703 | " popf\n" | |
704 | " fs movl %%esp, %12\n" | |
705 | " fs movl %0, %%eax\n" | |
706 | " fs movl %1, %%ecx\n" | |
707 | " fs movl %2, %%edx\n" | |
708 | " fs movl %3, %%ebx\n" | |
709 | " fs movl %4, %%esp\n" | |
710 | " fs movl %5, %%ebp\n" | |
711 | " fs movl %6, %%esi\n" | |
712 | " fs movl %7, %%edi\n" | |
713 | " fs jmp *%9\n" | |
714 | "exec_loop:\n" | |
715 | " fs movl %%esp, %4\n" | |
716 | " fs movl %12, %%esp\n" | |
717 | " fs movl %%eax, %0\n" | |
718 | " fs movl %%ecx, %1\n" | |
719 | " fs movl %%edx, %2\n" | |
720 | " fs movl %%ebx, %3\n" | |
721 | " fs movl %%ebp, %5\n" | |
722 | " fs movl %%esi, %6\n" | |
723 | " fs movl %%edi, %7\n" | |
724 | " pushf\n" | |
725 | " popl %%eax\n" | |
726 | " movl %%eax, %%ecx\n" | |
727 | " andl $0x400, %%ecx\n" | |
728 | " shrl $9, %%ecx\n" | |
729 | " andl $0x8d5, %%eax\n" | |
730 | " fs movl %%eax, %8\n" | |
731 | " movl $1, %%eax\n" | |
732 | " subl %%ecx, %%eax\n" | |
733 | " fs movl %%eax, %11\n" | |
734 | " fs movl %9, %%ebx\n" /* get T0 value */ | |
735 | " popl %%ebp\n" | |
736 | : | |
737 | : "m" (*(uint8_t *)offsetof(CPUState, regs[0])), | |
738 | "m" (*(uint8_t *)offsetof(CPUState, regs[1])), | |
739 | "m" (*(uint8_t *)offsetof(CPUState, regs[2])), | |
740 | "m" (*(uint8_t *)offsetof(CPUState, regs[3])), | |
741 | "m" (*(uint8_t *)offsetof(CPUState, regs[4])), | |
742 | "m" (*(uint8_t *)offsetof(CPUState, regs[5])), | |
743 | "m" (*(uint8_t *)offsetof(CPUState, regs[6])), | |
744 | "m" (*(uint8_t *)offsetof(CPUState, regs[7])), | |
745 | "m" (*(uint8_t *)offsetof(CPUState, cc_src)), | |
746 | "m" (*(uint8_t *)offsetof(CPUState, tmp0)), | |
747 | "a" (gen_func), | |
748 | "m" (*(uint8_t *)offsetof(CPUState, df)), | |
749 | "m" (*(uint8_t *)offsetof(CPUState, saved_esp)) | |
750 | : "%ecx", "%edx" | |
751 | ); | |
752 | } | |
753 | } | |
b8076a74 FB |
754 | #elif defined(__ia64) |
755 | struct fptr { | |
756 | void *ip; | |
757 | void *gp; | |
758 | } fp; | |
759 | ||
760 | fp.ip = tc_ptr; | |
761 | fp.gp = code_gen_buffer + 2 * (1 << 20); | |
762 | (*(void (*)(void)) &fp)(); | |
ae228531 | 763 | #else |
3fb2ded1 | 764 | gen_func(); |
ae228531 | 765 | #endif |
83479e77 | 766 | env->current_tb = NULL; |
4cbf74b6 FB |
767 | /* reset soft MMU for next block (it can currently |
768 | only be set by a memory fault) */ | |
769 | #if defined(TARGET_I386) && !defined(CONFIG_SOFTMMU) | |
3f337316 FB |
770 | if (env->hflags & HF_SOFTMMU_MASK) { |
771 | env->hflags &= ~HF_SOFTMMU_MASK; | |
4cbf74b6 FB |
772 | /* do not allow linking to another block */ |
773 | T0 = 0; | |
774 | } | |
f32fc648 FB |
775 | #endif |
776 | #if defined(USE_KQEMU) | |
777 | #define MIN_CYCLE_BEFORE_SWITCH (100 * 1000) | |
778 | if (kqemu_is_ok(env) && | |
779 | (cpu_get_time_fast() - env->last_io_time) >= MIN_CYCLE_BEFORE_SWITCH) { | |
780 | cpu_loop_exit(); | |
781 | } | |
4cbf74b6 | 782 | #endif |
3fb2ded1 FB |
783 | } |
784 | } else { | |
0d1a29f9 | 785 | env_to_regs(); |
7d13299d | 786 | } |
3fb2ded1 FB |
787 | } /* for(;;) */ |
788 | ||
7d13299d | 789 | |
e4533c7a | 790 | #if defined(TARGET_I386) |
97eb5b14 FB |
791 | #if defined(USE_CODE_COPY) |
792 | if (env->native_fp_regs) { | |
793 | save_native_fp_state(env); | |
794 | } | |
795 | #endif | |
9de5e440 | 796 | /* restore flags in standard format */ |
fc2b4c48 | 797 | env->eflags = env->eflags | cc_table[CC_OP].compute_all() | (DF & DF_MASK); |
9de5e440 | 798 | |
7d13299d | 799 | /* restore global registers */ |
04369ff2 FB |
800 | #ifdef reg_EAX |
801 | EAX = saved_EAX; | |
802 | #endif | |
803 | #ifdef reg_ECX | |
804 | ECX = saved_ECX; | |
805 | #endif | |
806 | #ifdef reg_EDX | |
807 | EDX = saved_EDX; | |
808 | #endif | |
809 | #ifdef reg_EBX | |
810 | EBX = saved_EBX; | |
811 | #endif | |
812 | #ifdef reg_ESP | |
813 | ESP = saved_ESP; | |
814 | #endif | |
815 | #ifdef reg_EBP | |
816 | EBP = saved_EBP; | |
817 | #endif | |
818 | #ifdef reg_ESI | |
819 | ESI = saved_ESI; | |
820 | #endif | |
821 | #ifdef reg_EDI | |
822 | EDI = saved_EDI; | |
8c6939c0 | 823 | #endif |
e4533c7a | 824 | #elif defined(TARGET_ARM) |
b7bcbe95 | 825 | /* XXX: Save/restore host fpu exception state?. */ |
93ac68bc | 826 | #elif defined(TARGET_SPARC) |
3475187d FB |
827 | #if defined(reg_REGWPTR) |
828 | REGWPTR = saved_regwptr; | |
829 | #endif | |
67867308 | 830 | #elif defined(TARGET_PPC) |
6af0bf9c | 831 | #elif defined(TARGET_MIPS) |
fdf9b3e8 FB |
832 | #elif defined(TARGET_SH4) |
833 | /* XXXXX */ | |
e4533c7a FB |
834 | #else |
835 | #error unsupported target CPU | |
836 | #endif | |
8c6939c0 FB |
837 | #ifdef __sparc__ |
838 | asm volatile ("mov %0, %%i7" : : "r" (saved_i7)); | |
04369ff2 | 839 | #endif |
7d13299d FB |
840 | T0 = saved_T0; |
841 | T1 = saved_T1; | |
3475187d | 842 | #if defined(reg_T2) |
e4533c7a | 843 | T2 = saved_T2; |
3475187d | 844 | #endif |
7d13299d | 845 | env = saved_env; |
6a00d601 FB |
846 | /* fail safe : never use cpu_single_env outside cpu_exec() */ |
847 | cpu_single_env = NULL; | |
7d13299d FB |
848 | return ret; |
849 | } | |
6dbad63e | 850 | |
fbf9eeb3 FB |
851 | /* must only be called from the generated code as an exception can be |
852 | generated */ | |
853 | void tb_invalidate_page_range(target_ulong start, target_ulong end) | |
854 | { | |
dc5d0b3d FB |
855 | /* XXX: cannot enable it yet because it yields to MMU exception |
856 | where NIP != read address on PowerPC */ | |
857 | #if 0 | |
fbf9eeb3 FB |
858 | target_ulong phys_addr; |
859 | phys_addr = get_phys_addr_code(env, start); | |
860 | tb_invalidate_phys_page_range(phys_addr, phys_addr + end - start, 0); | |
dc5d0b3d | 861 | #endif |
fbf9eeb3 FB |
862 | } |
863 | ||
1a18c71b | 864 | #if defined(TARGET_I386) && defined(CONFIG_USER_ONLY) |
e4533c7a | 865 | |
6dbad63e FB |
866 | void cpu_x86_load_seg(CPUX86State *s, int seg_reg, int selector) |
867 | { | |
868 | CPUX86State *saved_env; | |
869 | ||
870 | saved_env = env; | |
871 | env = s; | |
a412ac57 | 872 | if (!(env->cr[0] & CR0_PE_MASK) || (env->eflags & VM_MASK)) { |
a513fe19 | 873 | selector &= 0xffff; |
2e255c6b | 874 | cpu_x86_load_seg_cache(env, seg_reg, selector, |
c27004ec | 875 | (selector << 4), 0xffff, 0); |
a513fe19 | 876 | } else { |
b453b70b | 877 | load_seg(seg_reg, selector); |
a513fe19 | 878 | } |
6dbad63e FB |
879 | env = saved_env; |
880 | } | |
9de5e440 | 881 | |
d0a1ffc9 FB |
882 | void cpu_x86_fsave(CPUX86State *s, uint8_t *ptr, int data32) |
883 | { | |
884 | CPUX86State *saved_env; | |
885 | ||
886 | saved_env = env; | |
887 | env = s; | |
888 | ||
c27004ec | 889 | helper_fsave((target_ulong)ptr, data32); |
d0a1ffc9 FB |
890 | |
891 | env = saved_env; | |
892 | } | |
893 | ||
894 | void cpu_x86_frstor(CPUX86State *s, uint8_t *ptr, int data32) | |
895 | { | |
896 | CPUX86State *saved_env; | |
897 | ||
898 | saved_env = env; | |
899 | env = s; | |
900 | ||
c27004ec | 901 | helper_frstor((target_ulong)ptr, data32); |
d0a1ffc9 FB |
902 | |
903 | env = saved_env; | |
904 | } | |
905 | ||
e4533c7a FB |
906 | #endif /* TARGET_I386 */ |
907 | ||
67b915a5 FB |
908 | #if !defined(CONFIG_SOFTMMU) |
909 | ||
3fb2ded1 FB |
910 | #if defined(TARGET_I386) |
911 | ||
b56dad1c | 912 | /* 'pc' is the host PC at which the exception was raised. 'address' is |
fd6ce8f6 FB |
913 | the effective address of the memory exception. 'is_write' is 1 if a |
914 | write caused the exception and otherwise 0'. 'old_set' is the | |
915 | signal set which should be restored */ | |
2b413144 | 916 | static inline int handle_cpu_signal(unsigned long pc, unsigned long address, |
bf3e8bf1 FB |
917 | int is_write, sigset_t *old_set, |
918 | void *puc) | |
9de5e440 | 919 | { |
a513fe19 FB |
920 | TranslationBlock *tb; |
921 | int ret; | |
68a79315 | 922 | |
83479e77 FB |
923 | if (cpu_single_env) |
924 | env = cpu_single_env; /* XXX: find a correct solution for multithread */ | |
fd6ce8f6 | 925 | #if defined(DEBUG_SIGNAL) |
bf3e8bf1 FB |
926 | qemu_printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n", |
927 | pc, address, is_write, *(unsigned long *)old_set); | |
9de5e440 | 928 | #endif |
25eb4484 | 929 | /* XXX: locking issue */ |
53a5960a | 930 | if (is_write && page_unprotect(h2g(address), pc, puc)) { |
fd6ce8f6 FB |
931 | return 1; |
932 | } | |
fbf9eeb3 | 933 | |
3fb2ded1 | 934 | /* see if it is an MMU fault */ |
93a40ea9 FB |
935 | ret = cpu_x86_handle_mmu_fault(env, address, is_write, |
936 | ((env->hflags & HF_CPL_MASK) == 3), 0); | |
3fb2ded1 FB |
937 | if (ret < 0) |
938 | return 0; /* not an MMU fault */ | |
939 | if (ret == 0) | |
940 | return 1; /* the MMU fault was handled without causing real CPU fault */ | |
941 | /* now we have a real cpu fault */ | |
a513fe19 FB |
942 | tb = tb_find_pc(pc); |
943 | if (tb) { | |
9de5e440 FB |
944 | /* the PC is inside the translated code. It means that we have |
945 | a virtual CPU fault */ | |
bf3e8bf1 | 946 | cpu_restore_state(tb, env, pc, puc); |
3fb2ded1 | 947 | } |
4cbf74b6 | 948 | if (ret == 1) { |
3fb2ded1 | 949 | #if 0 |
4cbf74b6 FB |
950 | printf("PF exception: EIP=0x%08x CR2=0x%08x error=0x%x\n", |
951 | env->eip, env->cr[2], env->error_code); | |
3fb2ded1 | 952 | #endif |
4cbf74b6 FB |
953 | /* we restore the process signal mask as the sigreturn should |
954 | do it (XXX: use sigsetjmp) */ | |
955 | sigprocmask(SIG_SETMASK, old_set, NULL); | |
54ca9095 | 956 | raise_exception_err(env->exception_index, env->error_code); |
4cbf74b6 FB |
957 | } else { |
958 | /* activate soft MMU for this block */ | |
3f337316 | 959 | env->hflags |= HF_SOFTMMU_MASK; |
fbf9eeb3 | 960 | cpu_resume_from_signal(env, puc); |
4cbf74b6 | 961 | } |
3fb2ded1 FB |
962 | /* never comes here */ |
963 | return 1; | |
964 | } | |
965 | ||
e4533c7a | 966 | #elif defined(TARGET_ARM) |
3fb2ded1 | 967 | static inline int handle_cpu_signal(unsigned long pc, unsigned long address, |
bf3e8bf1 FB |
968 | int is_write, sigset_t *old_set, |
969 | void *puc) | |
3fb2ded1 | 970 | { |
68016c62 FB |
971 | TranslationBlock *tb; |
972 | int ret; | |
973 | ||
974 | if (cpu_single_env) | |
975 | env = cpu_single_env; /* XXX: find a correct solution for multithread */ | |
976 | #if defined(DEBUG_SIGNAL) | |
977 | printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n", | |
978 | pc, address, is_write, *(unsigned long *)old_set); | |
979 | #endif | |
9f0777ed | 980 | /* XXX: locking issue */ |
53a5960a | 981 | if (is_write && page_unprotect(h2g(address), pc, puc)) { |
9f0777ed FB |
982 | return 1; |
983 | } | |
68016c62 FB |
984 | /* see if it is an MMU fault */ |
985 | ret = cpu_arm_handle_mmu_fault(env, address, is_write, 1, 0); | |
986 | if (ret < 0) | |
987 | return 0; /* not an MMU fault */ | |
988 | if (ret == 0) | |
989 | return 1; /* the MMU fault was handled without causing real CPU fault */ | |
990 | /* now we have a real cpu fault */ | |
991 | tb = tb_find_pc(pc); | |
992 | if (tb) { | |
993 | /* the PC is inside the translated code. It means that we have | |
994 | a virtual CPU fault */ | |
995 | cpu_restore_state(tb, env, pc, puc); | |
996 | } | |
997 | /* we restore the process signal mask as the sigreturn should | |
998 | do it (XXX: use sigsetjmp) */ | |
999 | sigprocmask(SIG_SETMASK, old_set, NULL); | |
1000 | cpu_loop_exit(); | |
3fb2ded1 | 1001 | } |
93ac68bc FB |
1002 | #elif defined(TARGET_SPARC) |
1003 | static inline int handle_cpu_signal(unsigned long pc, unsigned long address, | |
bf3e8bf1 FB |
1004 | int is_write, sigset_t *old_set, |
1005 | void *puc) | |
93ac68bc | 1006 | { |
68016c62 FB |
1007 | TranslationBlock *tb; |
1008 | int ret; | |
1009 | ||
1010 | if (cpu_single_env) | |
1011 | env = cpu_single_env; /* XXX: find a correct solution for multithread */ | |
1012 | #if defined(DEBUG_SIGNAL) | |
1013 | printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n", | |
1014 | pc, address, is_write, *(unsigned long *)old_set); | |
1015 | #endif | |
b453b70b | 1016 | /* XXX: locking issue */ |
53a5960a | 1017 | if (is_write && page_unprotect(h2g(address), pc, puc)) { |
b453b70b FB |
1018 | return 1; |
1019 | } | |
68016c62 FB |
1020 | /* see if it is an MMU fault */ |
1021 | ret = cpu_sparc_handle_mmu_fault(env, address, is_write, 1, 0); | |
1022 | if (ret < 0) | |
1023 | return 0; /* not an MMU fault */ | |
1024 | if (ret == 0) | |
1025 | return 1; /* the MMU fault was handled without causing real CPU fault */ | |
1026 | /* now we have a real cpu fault */ | |
1027 | tb = tb_find_pc(pc); | |
1028 | if (tb) { | |
1029 | /* the PC is inside the translated code. It means that we have | |
1030 | a virtual CPU fault */ | |
1031 | cpu_restore_state(tb, env, pc, puc); | |
1032 | } | |
1033 | /* we restore the process signal mask as the sigreturn should | |
1034 | do it (XXX: use sigsetjmp) */ | |
1035 | sigprocmask(SIG_SETMASK, old_set, NULL); | |
1036 | cpu_loop_exit(); | |
93ac68bc | 1037 | } |
67867308 FB |
1038 | #elif defined (TARGET_PPC) |
1039 | static inline int handle_cpu_signal(unsigned long pc, unsigned long address, | |
bf3e8bf1 FB |
1040 | int is_write, sigset_t *old_set, |
1041 | void *puc) | |
67867308 FB |
1042 | { |
1043 | TranslationBlock *tb; | |
ce09776b | 1044 | int ret; |
67867308 | 1045 | |
67867308 FB |
1046 | if (cpu_single_env) |
1047 | env = cpu_single_env; /* XXX: find a correct solution for multithread */ | |
67867308 FB |
1048 | #if defined(DEBUG_SIGNAL) |
1049 | printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n", | |
1050 | pc, address, is_write, *(unsigned long *)old_set); | |
1051 | #endif | |
1052 | /* XXX: locking issue */ | |
53a5960a | 1053 | if (is_write && page_unprotect(h2g(address), pc, puc)) { |
67867308 FB |
1054 | return 1; |
1055 | } | |
1056 | ||
ce09776b | 1057 | /* see if it is an MMU fault */ |
7f957d28 | 1058 | ret = cpu_ppc_handle_mmu_fault(env, address, is_write, msr_pr, 0); |
ce09776b FB |
1059 | if (ret < 0) |
1060 | return 0; /* not an MMU fault */ | |
1061 | if (ret == 0) | |
1062 | return 1; /* the MMU fault was handled without causing real CPU fault */ | |
1063 | ||
67867308 FB |
1064 | /* now we have a real cpu fault */ |
1065 | tb = tb_find_pc(pc); | |
1066 | if (tb) { | |
1067 | /* the PC is inside the translated code. It means that we have | |
1068 | a virtual CPU fault */ | |
bf3e8bf1 | 1069 | cpu_restore_state(tb, env, pc, puc); |
67867308 | 1070 | } |
ce09776b | 1071 | if (ret == 1) { |
67867308 | 1072 | #if 0 |
ce09776b FB |
1073 | printf("PF exception: NIP=0x%08x error=0x%x %p\n", |
1074 | env->nip, env->error_code, tb); | |
67867308 FB |
1075 | #endif |
1076 | /* we restore the process signal mask as the sigreturn should | |
1077 | do it (XXX: use sigsetjmp) */ | |
bf3e8bf1 | 1078 | sigprocmask(SIG_SETMASK, old_set, NULL); |
9fddaa0c | 1079 | do_raise_exception_err(env->exception_index, env->error_code); |
ce09776b FB |
1080 | } else { |
1081 | /* activate soft MMU for this block */ | |
fbf9eeb3 | 1082 | cpu_resume_from_signal(env, puc); |
ce09776b | 1083 | } |
67867308 FB |
1084 | /* never comes here */ |
1085 | return 1; | |
1086 | } | |
6af0bf9c FB |
1087 | |
1088 | #elif defined (TARGET_MIPS) | |
1089 | static inline int handle_cpu_signal(unsigned long pc, unsigned long address, | |
1090 | int is_write, sigset_t *old_set, | |
1091 | void *puc) | |
1092 | { | |
1093 | TranslationBlock *tb; | |
1094 | int ret; | |
1095 | ||
1096 | if (cpu_single_env) | |
1097 | env = cpu_single_env; /* XXX: find a correct solution for multithread */ | |
1098 | #if defined(DEBUG_SIGNAL) | |
1099 | printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n", | |
1100 | pc, address, is_write, *(unsigned long *)old_set); | |
1101 | #endif | |
1102 | /* XXX: locking issue */ | |
53a5960a | 1103 | if (is_write && page_unprotect(h2g(address), pc, puc)) { |
6af0bf9c FB |
1104 | return 1; |
1105 | } | |
1106 | ||
1107 | /* see if it is an MMU fault */ | |
cc9442b9 | 1108 | ret = cpu_mips_handle_mmu_fault(env, address, is_write, 1, 0); |
6af0bf9c FB |
1109 | if (ret < 0) |
1110 | return 0; /* not an MMU fault */ | |
1111 | if (ret == 0) | |
1112 | return 1; /* the MMU fault was handled without causing real CPU fault */ | |
1113 | ||
1114 | /* now we have a real cpu fault */ | |
1115 | tb = tb_find_pc(pc); | |
1116 | if (tb) { | |
1117 | /* the PC is inside the translated code. It means that we have | |
1118 | a virtual CPU fault */ | |
1119 | cpu_restore_state(tb, env, pc, puc); | |
1120 | } | |
1121 | if (ret == 1) { | |
1122 | #if 0 | |
1123 | printf("PF exception: NIP=0x%08x error=0x%x %p\n", | |
1124 | env->nip, env->error_code, tb); | |
1125 | #endif | |
1126 | /* we restore the process signal mask as the sigreturn should | |
1127 | do it (XXX: use sigsetjmp) */ | |
1128 | sigprocmask(SIG_SETMASK, old_set, NULL); | |
1129 | do_raise_exception_err(env->exception_index, env->error_code); | |
1130 | } else { | |
1131 | /* activate soft MMU for this block */ | |
1132 | cpu_resume_from_signal(env, puc); | |
1133 | } | |
1134 | /* never comes here */ | |
1135 | return 1; | |
1136 | } | |
1137 | ||
fdf9b3e8 FB |
1138 | #elif defined (TARGET_SH4) |
1139 | static inline int handle_cpu_signal(unsigned long pc, unsigned long address, | |
1140 | int is_write, sigset_t *old_set, | |
1141 | void *puc) | |
1142 | { | |
1143 | TranslationBlock *tb; | |
1144 | int ret; | |
1145 | ||
1146 | if (cpu_single_env) | |
1147 | env = cpu_single_env; /* XXX: find a correct solution for multithread */ | |
1148 | #if defined(DEBUG_SIGNAL) | |
1149 | printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n", | |
1150 | pc, address, is_write, *(unsigned long *)old_set); | |
1151 | #endif | |
1152 | /* XXX: locking issue */ | |
1153 | if (is_write && page_unprotect(h2g(address), pc, puc)) { | |
1154 | return 1; | |
1155 | } | |
1156 | ||
1157 | /* see if it is an MMU fault */ | |
1158 | ret = cpu_sh4_handle_mmu_fault(env, address, is_write, 1, 0); | |
1159 | if (ret < 0) | |
1160 | return 0; /* not an MMU fault */ | |
1161 | if (ret == 0) | |
1162 | return 1; /* the MMU fault was handled without causing real CPU fault */ | |
1163 | ||
1164 | /* now we have a real cpu fault */ | |
1165 | tb = tb_find_pc(pc); | |
1166 | if (tb) { | |
1167 | /* the PC is inside the translated code. It means that we have | |
1168 | a virtual CPU fault */ | |
1169 | cpu_restore_state(tb, env, pc, puc); | |
1170 | } | |
1171 | if (ret == 1) { | |
1172 | #if 0 | |
1173 | printf("PF exception: NIP=0x%08x error=0x%x %p\n", | |
1174 | env->nip, env->error_code, tb); | |
1175 | #endif | |
1176 | /* we restore the process signal mask as the sigreturn should | |
1177 | do it (XXX: use sigsetjmp) */ | |
1178 | sigprocmask(SIG_SETMASK, old_set, NULL); | |
1179 | // do_raise_exception_err(env->exception_index, env->error_code); | |
1180 | } else { | |
1181 | /* activate soft MMU for this block */ | |
1182 | cpu_resume_from_signal(env, puc); | |
1183 | } | |
1184 | /* never comes here */ | |
1185 | return 1; | |
1186 | } | |
e4533c7a FB |
1187 | #else |
1188 | #error unsupported target CPU | |
1189 | #endif | |
9de5e440 | 1190 | |
2b413144 FB |
1191 | #if defined(__i386__) |
1192 | ||
bf3e8bf1 FB |
1193 | #if defined(USE_CODE_COPY) |
1194 | static void cpu_send_trap(unsigned long pc, int trap, | |
1195 | struct ucontext *uc) | |
1196 | { | |
1197 | TranslationBlock *tb; | |
1198 | ||
1199 | if (cpu_single_env) | |
1200 | env = cpu_single_env; /* XXX: find a correct solution for multithread */ | |
1201 | /* now we have a real cpu fault */ | |
1202 | tb = tb_find_pc(pc); | |
1203 | if (tb) { | |
1204 | /* the PC is inside the translated code. It means that we have | |
1205 | a virtual CPU fault */ | |
1206 | cpu_restore_state(tb, env, pc, uc); | |
1207 | } | |
1208 | sigprocmask(SIG_SETMASK, &uc->uc_sigmask, NULL); | |
1209 | raise_exception_err(trap, env->error_code); | |
1210 | } | |
1211 | #endif | |
1212 | ||
e4533c7a FB |
1213 | int cpu_signal_handler(int host_signum, struct siginfo *info, |
1214 | void *puc) | |
9de5e440 | 1215 | { |
9de5e440 FB |
1216 | struct ucontext *uc = puc; |
1217 | unsigned long pc; | |
bf3e8bf1 | 1218 | int trapno; |
97eb5b14 | 1219 | |
d691f669 FB |
1220 | #ifndef REG_EIP |
1221 | /* for glibc 2.1 */ | |
fd6ce8f6 FB |
1222 | #define REG_EIP EIP |
1223 | #define REG_ERR ERR | |
1224 | #define REG_TRAPNO TRAPNO | |
d691f669 | 1225 | #endif |
fc2b4c48 | 1226 | pc = uc->uc_mcontext.gregs[REG_EIP]; |
bf3e8bf1 FB |
1227 | trapno = uc->uc_mcontext.gregs[REG_TRAPNO]; |
1228 | #if defined(TARGET_I386) && defined(USE_CODE_COPY) | |
1229 | if (trapno == 0x00 || trapno == 0x05) { | |
1230 | /* send division by zero or bound exception */ | |
1231 | cpu_send_trap(pc, trapno, uc); | |
1232 | return 1; | |
1233 | } else | |
1234 | #endif | |
1235 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, | |
1236 | trapno == 0xe ? | |
1237 | (uc->uc_mcontext.gregs[REG_ERR] >> 1) & 1 : 0, | |
1238 | &uc->uc_sigmask, puc); | |
2b413144 FB |
1239 | } |
1240 | ||
bc51c5c9 FB |
1241 | #elif defined(__x86_64__) |
1242 | ||
1243 | int cpu_signal_handler(int host_signum, struct siginfo *info, | |
1244 | void *puc) | |
1245 | { | |
1246 | struct ucontext *uc = puc; | |
1247 | unsigned long pc; | |
1248 | ||
1249 | pc = uc->uc_mcontext.gregs[REG_RIP]; | |
1250 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, | |
1251 | uc->uc_mcontext.gregs[REG_TRAPNO] == 0xe ? | |
1252 | (uc->uc_mcontext.gregs[REG_ERR] >> 1) & 1 : 0, | |
1253 | &uc->uc_sigmask, puc); | |
1254 | } | |
1255 | ||
83fb7adf | 1256 | #elif defined(__powerpc__) |
2b413144 | 1257 | |
83fb7adf FB |
1258 | /*********************************************************************** |
1259 | * signal context platform-specific definitions | |
1260 | * From Wine | |
1261 | */ | |
1262 | #ifdef linux | |
1263 | /* All Registers access - only for local access */ | |
1264 | # define REG_sig(reg_name, context) ((context)->uc_mcontext.regs->reg_name) | |
1265 | /* Gpr Registers access */ | |
1266 | # define GPR_sig(reg_num, context) REG_sig(gpr[reg_num], context) | |
1267 | # define IAR_sig(context) REG_sig(nip, context) /* Program counter */ | |
1268 | # define MSR_sig(context) REG_sig(msr, context) /* Machine State Register (Supervisor) */ | |
1269 | # define CTR_sig(context) REG_sig(ctr, context) /* Count register */ | |
1270 | # define XER_sig(context) REG_sig(xer, context) /* User's integer exception register */ | |
1271 | # define LR_sig(context) REG_sig(link, context) /* Link register */ | |
1272 | # define CR_sig(context) REG_sig(ccr, context) /* Condition register */ | |
1273 | /* Float Registers access */ | |
1274 | # define FLOAT_sig(reg_num, context) (((double*)((char*)((context)->uc_mcontext.regs+48*4)))[reg_num]) | |
1275 | # define FPSCR_sig(context) (*(int*)((char*)((context)->uc_mcontext.regs+(48+32*2)*4))) | |
1276 | /* Exception Registers access */ | |
1277 | # define DAR_sig(context) REG_sig(dar, context) | |
1278 | # define DSISR_sig(context) REG_sig(dsisr, context) | |
1279 | # define TRAP_sig(context) REG_sig(trap, context) | |
1280 | #endif /* linux */ | |
1281 | ||
1282 | #ifdef __APPLE__ | |
1283 | # include <sys/ucontext.h> | |
1284 | typedef struct ucontext SIGCONTEXT; | |
1285 | /* All Registers access - only for local access */ | |
1286 | # define REG_sig(reg_name, context) ((context)->uc_mcontext->ss.reg_name) | |
1287 | # define FLOATREG_sig(reg_name, context) ((context)->uc_mcontext->fs.reg_name) | |
1288 | # define EXCEPREG_sig(reg_name, context) ((context)->uc_mcontext->es.reg_name) | |
1289 | # define VECREG_sig(reg_name, context) ((context)->uc_mcontext->vs.reg_name) | |
1290 | /* Gpr Registers access */ | |
1291 | # define GPR_sig(reg_num, context) REG_sig(r##reg_num, context) | |
1292 | # define IAR_sig(context) REG_sig(srr0, context) /* Program counter */ | |
1293 | # define MSR_sig(context) REG_sig(srr1, context) /* Machine State Register (Supervisor) */ | |
1294 | # define CTR_sig(context) REG_sig(ctr, context) | |
1295 | # define XER_sig(context) REG_sig(xer, context) /* Link register */ | |
1296 | # define LR_sig(context) REG_sig(lr, context) /* User's integer exception register */ | |
1297 | # define CR_sig(context) REG_sig(cr, context) /* Condition register */ | |
1298 | /* Float Registers access */ | |
1299 | # define FLOAT_sig(reg_num, context) FLOATREG_sig(fpregs[reg_num], context) | |
1300 | # define FPSCR_sig(context) ((double)FLOATREG_sig(fpscr, context)) | |
1301 | /* Exception Registers access */ | |
1302 | # define DAR_sig(context) EXCEPREG_sig(dar, context) /* Fault registers for coredump */ | |
1303 | # define DSISR_sig(context) EXCEPREG_sig(dsisr, context) | |
1304 | # define TRAP_sig(context) EXCEPREG_sig(exception, context) /* number of powerpc exception taken */ | |
1305 | #endif /* __APPLE__ */ | |
1306 | ||
d1d9f421 | 1307 | int cpu_signal_handler(int host_signum, struct siginfo *info, |
e4533c7a | 1308 | void *puc) |
2b413144 | 1309 | { |
25eb4484 | 1310 | struct ucontext *uc = puc; |
25eb4484 | 1311 | unsigned long pc; |
25eb4484 FB |
1312 | int is_write; |
1313 | ||
83fb7adf | 1314 | pc = IAR_sig(uc); |
25eb4484 FB |
1315 | is_write = 0; |
1316 | #if 0 | |
1317 | /* ppc 4xx case */ | |
83fb7adf | 1318 | if (DSISR_sig(uc) & 0x00800000) |
25eb4484 FB |
1319 | is_write = 1; |
1320 | #else | |
83fb7adf | 1321 | if (TRAP_sig(uc) != 0x400 && (DSISR_sig(uc) & 0x02000000)) |
25eb4484 FB |
1322 | is_write = 1; |
1323 | #endif | |
1324 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, | |
bf3e8bf1 | 1325 | is_write, &uc->uc_sigmask, puc); |
2b413144 FB |
1326 | } |
1327 | ||
2f87c607 FB |
1328 | #elif defined(__alpha__) |
1329 | ||
e4533c7a | 1330 | int cpu_signal_handler(int host_signum, struct siginfo *info, |
2f87c607 FB |
1331 | void *puc) |
1332 | { | |
1333 | struct ucontext *uc = puc; | |
1334 | uint32_t *pc = uc->uc_mcontext.sc_pc; | |
1335 | uint32_t insn = *pc; | |
1336 | int is_write = 0; | |
1337 | ||
8c6939c0 | 1338 | /* XXX: need kernel patch to get write flag faster */ |
2f87c607 FB |
1339 | switch (insn >> 26) { |
1340 | case 0x0d: // stw | |
1341 | case 0x0e: // stb | |
1342 | case 0x0f: // stq_u | |
1343 | case 0x24: // stf | |
1344 | case 0x25: // stg | |
1345 | case 0x26: // sts | |
1346 | case 0x27: // stt | |
1347 | case 0x2c: // stl | |
1348 | case 0x2d: // stq | |
1349 | case 0x2e: // stl_c | |
1350 | case 0x2f: // stq_c | |
1351 | is_write = 1; | |
1352 | } | |
1353 | ||
1354 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, | |
bf3e8bf1 | 1355 | is_write, &uc->uc_sigmask, puc); |
2f87c607 | 1356 | } |
8c6939c0 FB |
1357 | #elif defined(__sparc__) |
1358 | ||
e4533c7a FB |
1359 | int cpu_signal_handler(int host_signum, struct siginfo *info, |
1360 | void *puc) | |
8c6939c0 FB |
1361 | { |
1362 | uint32_t *regs = (uint32_t *)(info + 1); | |
1363 | void *sigmask = (regs + 20); | |
1364 | unsigned long pc; | |
1365 | int is_write; | |
1366 | uint32_t insn; | |
1367 | ||
1368 | /* XXX: is there a standard glibc define ? */ | |
1369 | pc = regs[1]; | |
1370 | /* XXX: need kernel patch to get write flag faster */ | |
1371 | is_write = 0; | |
1372 | insn = *(uint32_t *)pc; | |
1373 | if ((insn >> 30) == 3) { | |
1374 | switch((insn >> 19) & 0x3f) { | |
1375 | case 0x05: // stb | |
1376 | case 0x06: // sth | |
1377 | case 0x04: // st | |
1378 | case 0x07: // std | |
1379 | case 0x24: // stf | |
1380 | case 0x27: // stdf | |
1381 | case 0x25: // stfsr | |
1382 | is_write = 1; | |
1383 | break; | |
1384 | } | |
1385 | } | |
1386 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, | |
bf3e8bf1 | 1387 | is_write, sigmask, NULL); |
8c6939c0 FB |
1388 | } |
1389 | ||
1390 | #elif defined(__arm__) | |
1391 | ||
e4533c7a FB |
1392 | int cpu_signal_handler(int host_signum, struct siginfo *info, |
1393 | void *puc) | |
8c6939c0 FB |
1394 | { |
1395 | struct ucontext *uc = puc; | |
1396 | unsigned long pc; | |
1397 | int is_write; | |
1398 | ||
1399 | pc = uc->uc_mcontext.gregs[R15]; | |
1400 | /* XXX: compute is_write */ | |
1401 | is_write = 0; | |
1402 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, | |
1403 | is_write, | |
1404 | &uc->uc_sigmask); | |
1405 | } | |
1406 | ||
38e584a0 FB |
1407 | #elif defined(__mc68000) |
1408 | ||
1409 | int cpu_signal_handler(int host_signum, struct siginfo *info, | |
1410 | void *puc) | |
1411 | { | |
1412 | struct ucontext *uc = puc; | |
1413 | unsigned long pc; | |
1414 | int is_write; | |
1415 | ||
1416 | pc = uc->uc_mcontext.gregs[16]; | |
1417 | /* XXX: compute is_write */ | |
1418 | is_write = 0; | |
1419 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, | |
1420 | is_write, | |
bf3e8bf1 | 1421 | &uc->uc_sigmask, puc); |
38e584a0 FB |
1422 | } |
1423 | ||
b8076a74 FB |
1424 | #elif defined(__ia64) |
1425 | ||
1426 | #ifndef __ISR_VALID | |
1427 | /* This ought to be in <bits/siginfo.h>... */ | |
1428 | # define __ISR_VALID 1 | |
b8076a74 FB |
1429 | #endif |
1430 | ||
1431 | int cpu_signal_handler(int host_signum, struct siginfo *info, void *puc) | |
1432 | { | |
1433 | struct ucontext *uc = puc; | |
1434 | unsigned long ip; | |
1435 | int is_write = 0; | |
1436 | ||
1437 | ip = uc->uc_mcontext.sc_ip; | |
1438 | switch (host_signum) { | |
1439 | case SIGILL: | |
1440 | case SIGFPE: | |
1441 | case SIGSEGV: | |
1442 | case SIGBUS: | |
1443 | case SIGTRAP: | |
fd4a43e4 | 1444 | if (info->si_code && (info->si_segvflags & __ISR_VALID)) |
b8076a74 FB |
1445 | /* ISR.W (write-access) is bit 33: */ |
1446 | is_write = (info->si_isr >> 33) & 1; | |
1447 | break; | |
1448 | ||
1449 | default: | |
1450 | break; | |
1451 | } | |
1452 | return handle_cpu_signal(ip, (unsigned long)info->si_addr, | |
1453 | is_write, | |
1454 | &uc->uc_sigmask, puc); | |
1455 | } | |
1456 | ||
90cb9493 FB |
1457 | #elif defined(__s390__) |
1458 | ||
1459 | int cpu_signal_handler(int host_signum, struct siginfo *info, | |
1460 | void *puc) | |
1461 | { | |
1462 | struct ucontext *uc = puc; | |
1463 | unsigned long pc; | |
1464 | int is_write; | |
1465 | ||
1466 | pc = uc->uc_mcontext.psw.addr; | |
1467 | /* XXX: compute is_write */ | |
1468 | is_write = 0; | |
1469 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, | |
1470 | is_write, | |
1471 | &uc->uc_sigmask, puc); | |
1472 | } | |
1473 | ||
9de5e440 | 1474 | #else |
2b413144 | 1475 | |
3fb2ded1 | 1476 | #error host CPU specific signal handler needed |
2b413144 | 1477 | |
9de5e440 | 1478 | #endif |
67b915a5 FB |
1479 | |
1480 | #endif /* !defined(CONFIG_SOFTMMU) */ |