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Commit | Line | Data |
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7d13299d FB |
1 | /* |
2 | * i386 emulator main execution loop | |
5fafdf24 | 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 | 16 | * You should have received a copy of the GNU Lesser General Public |
8167ee88 | 17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
7d13299d | 18 | */ |
e4533c7a | 19 | #include "config.h" |
93ac68bc | 20 | #include "exec.h" |
956034d7 | 21 | #include "disas.h" |
7cb69cae | 22 | #include "tcg.h" |
7ba1e619 | 23 | #include "kvm.h" |
1d93f0f0 | 24 | #include "qemu-barrier.h" |
7d13299d | 25 | |
fbf9eeb3 FB |
26 | #if !defined(CONFIG_SOFTMMU) |
27 | #undef EAX | |
28 | #undef ECX | |
29 | #undef EDX | |
30 | #undef EBX | |
31 | #undef ESP | |
32 | #undef EBP | |
33 | #undef ESI | |
34 | #undef EDI | |
35 | #undef EIP | |
36 | #include <signal.h> | |
84778508 | 37 | #ifdef __linux__ |
fbf9eeb3 FB |
38 | #include <sys/ucontext.h> |
39 | #endif | |
84778508 | 40 | #endif |
fbf9eeb3 | 41 | |
dfe5fff3 | 42 | #if defined(__sparc__) && !defined(CONFIG_SOLARIS) |
572a9d4a BS |
43 | // Work around ugly bugs in glibc that mangle global register contents |
44 | #undef env | |
45 | #define env cpu_single_env | |
46 | #endif | |
47 | ||
36bdbe54 FB |
48 | int tb_invalidated_flag; |
49 | ||
f0667e66 | 50 | //#define CONFIG_DEBUG_EXEC |
9de5e440 | 51 | //#define DEBUG_SIGNAL |
7d13299d | 52 | |
6a4955a8 AL |
53 | int qemu_cpu_has_work(CPUState *env) |
54 | { | |
55 | return cpu_has_work(env); | |
56 | } | |
57 | ||
e4533c7a FB |
58 | void cpu_loop_exit(void) |
59 | { | |
1c3569fe | 60 | env->current_tb = NULL; |
e4533c7a FB |
61 | longjmp(env->jmp_env, 1); |
62 | } | |
bfed01fc | 63 | |
fbf9eeb3 FB |
64 | /* exit the current TB from a signal handler. The host registers are |
65 | restored in a state compatible with the CPU emulator | |
66 | */ | |
5fafdf24 | 67 | void cpu_resume_from_signal(CPUState *env1, void *puc) |
fbf9eeb3 FB |
68 | { |
69 | #if !defined(CONFIG_SOFTMMU) | |
84778508 | 70 | #ifdef __linux__ |
fbf9eeb3 | 71 | struct ucontext *uc = puc; |
84778508 BS |
72 | #elif defined(__OpenBSD__) |
73 | struct sigcontext *uc = puc; | |
74 | #endif | |
fbf9eeb3 FB |
75 | #endif |
76 | ||
77 | env = env1; | |
78 | ||
79 | /* XXX: restore cpu registers saved in host registers */ | |
80 | ||
81 | #if !defined(CONFIG_SOFTMMU) | |
82 | if (puc) { | |
83 | /* XXX: use siglongjmp ? */ | |
84778508 | 84 | #ifdef __linux__ |
60e99246 AJ |
85 | #ifdef __ia64 |
86 | sigprocmask(SIG_SETMASK, (sigset_t *)&uc->uc_sigmask, NULL); | |
87 | #else | |
fbf9eeb3 | 88 | sigprocmask(SIG_SETMASK, &uc->uc_sigmask, NULL); |
60e99246 | 89 | #endif |
84778508 BS |
90 | #elif defined(__OpenBSD__) |
91 | sigprocmask(SIG_SETMASK, &uc->sc_mask, NULL); | |
92 | #endif | |
fbf9eeb3 FB |
93 | } |
94 | #endif | |
9a3ea654 | 95 | env->exception_index = -1; |
fbf9eeb3 FB |
96 | longjmp(env->jmp_env, 1); |
97 | } | |
98 | ||
2e70f6ef PB |
99 | /* Execute the code without caching the generated code. An interpreter |
100 | could be used if available. */ | |
101 | static void cpu_exec_nocache(int max_cycles, TranslationBlock *orig_tb) | |
102 | { | |
103 | unsigned long next_tb; | |
104 | TranslationBlock *tb; | |
105 | ||
106 | /* Should never happen. | |
107 | We only end up here when an existing TB is too long. */ | |
108 | if (max_cycles > CF_COUNT_MASK) | |
109 | max_cycles = CF_COUNT_MASK; | |
110 | ||
111 | tb = tb_gen_code(env, orig_tb->pc, orig_tb->cs_base, orig_tb->flags, | |
112 | max_cycles); | |
113 | env->current_tb = tb; | |
114 | /* execute the generated code */ | |
115 | next_tb = tcg_qemu_tb_exec(tb->tc_ptr); | |
1c3569fe | 116 | env->current_tb = NULL; |
2e70f6ef PB |
117 | |
118 | if ((next_tb & 3) == 2) { | |
119 | /* Restore PC. This may happen if async event occurs before | |
120 | the TB starts executing. */ | |
622ed360 | 121 | cpu_pc_from_tb(env, tb); |
2e70f6ef PB |
122 | } |
123 | tb_phys_invalidate(tb, -1); | |
124 | tb_free(tb); | |
125 | } | |
126 | ||
8a40a180 FB |
127 | static TranslationBlock *tb_find_slow(target_ulong pc, |
128 | target_ulong cs_base, | |
c068688b | 129 | uint64_t flags) |
8a40a180 FB |
130 | { |
131 | TranslationBlock *tb, **ptb1; | |
8a40a180 | 132 | unsigned int h; |
41c1b1c9 PB |
133 | tb_page_addr_t phys_pc, phys_page1, phys_page2; |
134 | target_ulong virt_page2; | |
3b46e624 | 135 | |
8a40a180 | 136 | tb_invalidated_flag = 0; |
3b46e624 | 137 | |
8a40a180 | 138 | /* find translated block using physical mappings */ |
41c1b1c9 | 139 | phys_pc = get_page_addr_code(env, pc); |
8a40a180 FB |
140 | phys_page1 = phys_pc & TARGET_PAGE_MASK; |
141 | phys_page2 = -1; | |
142 | h = tb_phys_hash_func(phys_pc); | |
143 | ptb1 = &tb_phys_hash[h]; | |
144 | for(;;) { | |
145 | tb = *ptb1; | |
146 | if (!tb) | |
147 | goto not_found; | |
5fafdf24 | 148 | if (tb->pc == pc && |
8a40a180 | 149 | tb->page_addr[0] == phys_page1 && |
5fafdf24 | 150 | tb->cs_base == cs_base && |
8a40a180 FB |
151 | tb->flags == flags) { |
152 | /* check next page if needed */ | |
153 | if (tb->page_addr[1] != -1) { | |
5fafdf24 | 154 | virt_page2 = (pc & TARGET_PAGE_MASK) + |
8a40a180 | 155 | TARGET_PAGE_SIZE; |
41c1b1c9 | 156 | phys_page2 = get_page_addr_code(env, virt_page2); |
8a40a180 FB |
157 | if (tb->page_addr[1] == phys_page2) |
158 | goto found; | |
159 | } else { | |
160 | goto found; | |
161 | } | |
162 | } | |
163 | ptb1 = &tb->phys_hash_next; | |
164 | } | |
165 | not_found: | |
2e70f6ef PB |
166 | /* if no translated code available, then translate it now */ |
167 | tb = tb_gen_code(env, pc, cs_base, flags, 0); | |
3b46e624 | 168 | |
8a40a180 | 169 | found: |
2c90fe2b KB |
170 | /* Move the last found TB to the head of the list */ |
171 | if (likely(*ptb1)) { | |
172 | *ptb1 = tb->phys_hash_next; | |
173 | tb->phys_hash_next = tb_phys_hash[h]; | |
174 | tb_phys_hash[h] = tb; | |
175 | } | |
8a40a180 FB |
176 | /* we add the TB in the virtual pc hash table */ |
177 | env->tb_jmp_cache[tb_jmp_cache_hash_func(pc)] = tb; | |
8a40a180 FB |
178 | return tb; |
179 | } | |
180 | ||
181 | static inline TranslationBlock *tb_find_fast(void) | |
182 | { | |
183 | TranslationBlock *tb; | |
184 | target_ulong cs_base, pc; | |
6b917547 | 185 | int flags; |
8a40a180 FB |
186 | |
187 | /* we record a subset of the CPU state. It will | |
188 | always be the same before a given translated block | |
189 | is executed. */ | |
6b917547 | 190 | cpu_get_tb_cpu_state(env, &pc, &cs_base, &flags); |
bce61846 | 191 | tb = env->tb_jmp_cache[tb_jmp_cache_hash_func(pc)]; |
551bd27f TS |
192 | if (unlikely(!tb || tb->pc != pc || tb->cs_base != cs_base || |
193 | tb->flags != flags)) { | |
8a40a180 FB |
194 | tb = tb_find_slow(pc, cs_base, flags); |
195 | } | |
196 | return tb; | |
197 | } | |
198 | ||
7d13299d FB |
199 | /* main execution loop */ |
200 | ||
1a28cac3 MT |
201 | volatile sig_atomic_t exit_request; |
202 | ||
e4533c7a | 203 | int cpu_exec(CPUState *env1) |
7d13299d | 204 | { |
1d9000e8 | 205 | volatile host_reg_t saved_env_reg; |
8a40a180 | 206 | int ret, interrupt_request; |
8a40a180 | 207 | TranslationBlock *tb; |
c27004ec | 208 | uint8_t *tc_ptr; |
d5975363 | 209 | unsigned long next_tb; |
8c6939c0 | 210 | |
bfed01fc TS |
211 | if (cpu_halted(env1) == EXCP_HALTED) |
212 | return EXCP_HALTED; | |
5a1e3cfc | 213 | |
5fafdf24 | 214 | cpu_single_env = env1; |
6a00d601 | 215 | |
24ebf5f3 PB |
216 | /* the access to env below is actually saving the global register's |
217 | value, so that files not including target-xyz/exec.h are free to | |
218 | use it. */ | |
219 | QEMU_BUILD_BUG_ON (sizeof (saved_env_reg) != sizeof (env)); | |
220 | saved_env_reg = (host_reg_t) env; | |
1d93f0f0 | 221 | barrier(); |
c27004ec | 222 | env = env1; |
e4533c7a | 223 | |
c629a4bc | 224 | if (unlikely(exit_request)) { |
1a28cac3 | 225 | env->exit_request = 1; |
1a28cac3 MT |
226 | } |
227 | ||
ecb644f4 | 228 | #if defined(TARGET_I386) |
6792a57b JK |
229 | /* put eflags in CPU temporary format */ |
230 | CC_SRC = env->eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); | |
231 | DF = 1 - (2 * ((env->eflags >> 10) & 1)); | |
232 | CC_OP = CC_OP_EFLAGS; | |
233 | env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); | |
93ac68bc | 234 | #elif defined(TARGET_SPARC) |
e6e5906b PB |
235 | #elif defined(TARGET_M68K) |
236 | env->cc_op = CC_OP_FLAGS; | |
237 | env->cc_dest = env->sr & 0xf; | |
238 | env->cc_x = (env->sr >> 4) & 1; | |
ecb644f4 TS |
239 | #elif defined(TARGET_ALPHA) |
240 | #elif defined(TARGET_ARM) | |
241 | #elif defined(TARGET_PPC) | |
b779e29e | 242 | #elif defined(TARGET_MICROBLAZE) |
6af0bf9c | 243 | #elif defined(TARGET_MIPS) |
fdf9b3e8 | 244 | #elif defined(TARGET_SH4) |
f1ccf904 | 245 | #elif defined(TARGET_CRIS) |
10ec5117 | 246 | #elif defined(TARGET_S390X) |
fdf9b3e8 | 247 | /* XXXXX */ |
e4533c7a FB |
248 | #else |
249 | #error unsupported target CPU | |
250 | #endif | |
3fb2ded1 | 251 | env->exception_index = -1; |
9d27abd9 | 252 | |
7d13299d | 253 | /* prepare setjmp context for exception handling */ |
3fb2ded1 FB |
254 | for(;;) { |
255 | if (setjmp(env->jmp_env) == 0) { | |
dfe5fff3 | 256 | #if defined(__sparc__) && !defined(CONFIG_SOLARIS) |
9ddff3d2 | 257 | #undef env |
6792a57b | 258 | env = cpu_single_env; |
9ddff3d2 BS |
259 | #define env cpu_single_env |
260 | #endif | |
3fb2ded1 FB |
261 | /* if an exception is pending, we execute it here */ |
262 | if (env->exception_index >= 0) { | |
263 | if (env->exception_index >= EXCP_INTERRUPT) { | |
264 | /* exit request from the cpu execution loop */ | |
265 | ret = env->exception_index; | |
266 | break; | |
72d239ed AJ |
267 | } else { |
268 | #if defined(CONFIG_USER_ONLY) | |
3fb2ded1 | 269 | /* if user mode only, we simulate a fake exception |
9f083493 | 270 | which will be handled outside the cpu execution |
3fb2ded1 | 271 | loop */ |
83479e77 | 272 | #if defined(TARGET_I386) |
5fafdf24 TS |
273 | do_interrupt_user(env->exception_index, |
274 | env->exception_is_int, | |
275 | env->error_code, | |
3fb2ded1 | 276 | env->exception_next_eip); |
eba01623 FB |
277 | /* successfully delivered */ |
278 | env->old_exception = -1; | |
83479e77 | 279 | #endif |
3fb2ded1 FB |
280 | ret = env->exception_index; |
281 | break; | |
72d239ed | 282 | #else |
83479e77 | 283 | #if defined(TARGET_I386) |
3fb2ded1 FB |
284 | /* simulate a real cpu exception. On i386, it can |
285 | trigger new exceptions, but we do not handle | |
286 | double or triple faults yet. */ | |
5fafdf24 TS |
287 | do_interrupt(env->exception_index, |
288 | env->exception_is_int, | |
289 | env->error_code, | |
d05e66d2 | 290 | env->exception_next_eip, 0); |
678dde13 TS |
291 | /* successfully delivered */ |
292 | env->old_exception = -1; | |
ce09776b FB |
293 | #elif defined(TARGET_PPC) |
294 | do_interrupt(env); | |
b779e29e EI |
295 | #elif defined(TARGET_MICROBLAZE) |
296 | do_interrupt(env); | |
6af0bf9c FB |
297 | #elif defined(TARGET_MIPS) |
298 | do_interrupt(env); | |
e95c8d51 | 299 | #elif defined(TARGET_SPARC) |
f2bc7e7f | 300 | do_interrupt(env); |
b5ff1b31 FB |
301 | #elif defined(TARGET_ARM) |
302 | do_interrupt(env); | |
fdf9b3e8 FB |
303 | #elif defined(TARGET_SH4) |
304 | do_interrupt(env); | |
eddf68a6 JM |
305 | #elif defined(TARGET_ALPHA) |
306 | do_interrupt(env); | |
f1ccf904 TS |
307 | #elif defined(TARGET_CRIS) |
308 | do_interrupt(env); | |
0633879f PB |
309 | #elif defined(TARGET_M68K) |
310 | do_interrupt(0); | |
72d239ed | 311 | #endif |
301d2908 | 312 | env->exception_index = -1; |
83479e77 | 313 | #endif |
3fb2ded1 | 314 | } |
5fafdf24 | 315 | } |
9df217a3 | 316 | |
b5fc09ae | 317 | next_tb = 0; /* force lookup of first TB */ |
3fb2ded1 | 318 | for(;;) { |
68a79315 | 319 | interrupt_request = env->interrupt_request; |
e1638bd8 | 320 | if (unlikely(interrupt_request)) { |
321 | if (unlikely(env->singlestep_enabled & SSTEP_NOIRQ)) { | |
322 | /* Mask out external interrupts for this step. */ | |
323 | interrupt_request &= ~(CPU_INTERRUPT_HARD | | |
324 | CPU_INTERRUPT_FIQ | | |
325 | CPU_INTERRUPT_SMI | | |
326 | CPU_INTERRUPT_NMI); | |
327 | } | |
6658ffb8 PB |
328 | if (interrupt_request & CPU_INTERRUPT_DEBUG) { |
329 | env->interrupt_request &= ~CPU_INTERRUPT_DEBUG; | |
330 | env->exception_index = EXCP_DEBUG; | |
331 | cpu_loop_exit(); | |
332 | } | |
a90b7318 | 333 | #if defined(TARGET_ARM) || defined(TARGET_SPARC) || defined(TARGET_MIPS) || \ |
b779e29e EI |
334 | defined(TARGET_PPC) || defined(TARGET_ALPHA) || defined(TARGET_CRIS) || \ |
335 | defined(TARGET_MICROBLAZE) | |
a90b7318 AZ |
336 | if (interrupt_request & CPU_INTERRUPT_HALT) { |
337 | env->interrupt_request &= ~CPU_INTERRUPT_HALT; | |
338 | env->halted = 1; | |
339 | env->exception_index = EXCP_HLT; | |
340 | cpu_loop_exit(); | |
341 | } | |
342 | #endif | |
68a79315 | 343 | #if defined(TARGET_I386) |
b09ea7d5 GN |
344 | if (interrupt_request & CPU_INTERRUPT_INIT) { |
345 | svm_check_intercept(SVM_EXIT_INIT); | |
346 | do_cpu_init(env); | |
347 | env->exception_index = EXCP_HALTED; | |
348 | cpu_loop_exit(); | |
349 | } else if (interrupt_request & CPU_INTERRUPT_SIPI) { | |
350 | do_cpu_sipi(env); | |
351 | } else if (env->hflags2 & HF2_GIF_MASK) { | |
db620f46 FB |
352 | if ((interrupt_request & CPU_INTERRUPT_SMI) && |
353 | !(env->hflags & HF_SMM_MASK)) { | |
354 | svm_check_intercept(SVM_EXIT_SMI); | |
355 | env->interrupt_request &= ~CPU_INTERRUPT_SMI; | |
356 | do_smm_enter(); | |
357 | next_tb = 0; | |
358 | } else if ((interrupt_request & CPU_INTERRUPT_NMI) && | |
359 | !(env->hflags2 & HF2_NMI_MASK)) { | |
360 | env->interrupt_request &= ~CPU_INTERRUPT_NMI; | |
361 | env->hflags2 |= HF2_NMI_MASK; | |
362 | do_interrupt(EXCP02_NMI, 0, 0, 0, 1); | |
363 | next_tb = 0; | |
79c4f6b0 HY |
364 | } else if (interrupt_request & CPU_INTERRUPT_MCE) { |
365 | env->interrupt_request &= ~CPU_INTERRUPT_MCE; | |
366 | do_interrupt(EXCP12_MCHK, 0, 0, 0, 0); | |
367 | next_tb = 0; | |
db620f46 FB |
368 | } else if ((interrupt_request & CPU_INTERRUPT_HARD) && |
369 | (((env->hflags2 & HF2_VINTR_MASK) && | |
370 | (env->hflags2 & HF2_HIF_MASK)) || | |
371 | (!(env->hflags2 & HF2_VINTR_MASK) && | |
372 | (env->eflags & IF_MASK && | |
373 | !(env->hflags & HF_INHIBIT_IRQ_MASK))))) { | |
374 | int intno; | |
375 | svm_check_intercept(SVM_EXIT_INTR); | |
376 | env->interrupt_request &= ~(CPU_INTERRUPT_HARD | CPU_INTERRUPT_VIRQ); | |
377 | intno = cpu_get_pic_interrupt(env); | |
93fcfe39 | 378 | qemu_log_mask(CPU_LOG_TB_IN_ASM, "Servicing hardware INT=0x%02x\n", intno); |
dfe5fff3 | 379 | #if defined(__sparc__) && !defined(CONFIG_SOLARIS) |
9ddff3d2 BS |
380 | #undef env |
381 | env = cpu_single_env; | |
382 | #define env cpu_single_env | |
383 | #endif | |
db620f46 FB |
384 | do_interrupt(intno, 0, 0, 0, 1); |
385 | /* ensure that no TB jump will be modified as | |
386 | the program flow was changed */ | |
387 | next_tb = 0; | |
0573fbfc | 388 | #if !defined(CONFIG_USER_ONLY) |
db620f46 FB |
389 | } else if ((interrupt_request & CPU_INTERRUPT_VIRQ) && |
390 | (env->eflags & IF_MASK) && | |
391 | !(env->hflags & HF_INHIBIT_IRQ_MASK)) { | |
392 | int intno; | |
393 | /* FIXME: this should respect TPR */ | |
394 | svm_check_intercept(SVM_EXIT_VINTR); | |
db620f46 | 395 | intno = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_vector)); |
93fcfe39 | 396 | qemu_log_mask(CPU_LOG_TB_IN_ASM, "Servicing virtual hardware INT=0x%02x\n", intno); |
db620f46 | 397 | do_interrupt(intno, 0, 0, 0, 1); |
d40c54d6 | 398 | env->interrupt_request &= ~CPU_INTERRUPT_VIRQ; |
db620f46 | 399 | next_tb = 0; |
907a5b26 | 400 | #endif |
db620f46 | 401 | } |
68a79315 | 402 | } |
ce09776b | 403 | #elif defined(TARGET_PPC) |
9fddaa0c FB |
404 | #if 0 |
405 | if ((interrupt_request & CPU_INTERRUPT_RESET)) { | |
d84bda46 | 406 | cpu_reset(env); |
9fddaa0c FB |
407 | } |
408 | #endif | |
47103572 | 409 | if (interrupt_request & CPU_INTERRUPT_HARD) { |
e9df014c JM |
410 | ppc_hw_interrupt(env); |
411 | if (env->pending_interrupts == 0) | |
412 | env->interrupt_request &= ~CPU_INTERRUPT_HARD; | |
b5fc09ae | 413 | next_tb = 0; |
ce09776b | 414 | } |
b779e29e EI |
415 | #elif defined(TARGET_MICROBLAZE) |
416 | if ((interrupt_request & CPU_INTERRUPT_HARD) | |
417 | && (env->sregs[SR_MSR] & MSR_IE) | |
418 | && !(env->sregs[SR_MSR] & (MSR_EIP | MSR_BIP)) | |
419 | && !(env->iflags & (D_FLAG | IMM_FLAG))) { | |
420 | env->exception_index = EXCP_IRQ; | |
421 | do_interrupt(env); | |
422 | next_tb = 0; | |
423 | } | |
6af0bf9c FB |
424 | #elif defined(TARGET_MIPS) |
425 | if ((interrupt_request & CPU_INTERRUPT_HARD) && | |
4cdc1cd1 | 426 | cpu_mips_hw_interrupts_pending(env)) { |
6af0bf9c FB |
427 | /* Raise it */ |
428 | env->exception_index = EXCP_EXT_INTERRUPT; | |
429 | env->error_code = 0; | |
430 | do_interrupt(env); | |
b5fc09ae | 431 | next_tb = 0; |
6af0bf9c | 432 | } |
e95c8d51 | 433 | #elif defined(TARGET_SPARC) |
d532b26c IK |
434 | if (interrupt_request & CPU_INTERRUPT_HARD) { |
435 | if (cpu_interrupts_enabled(env) && | |
436 | env->interrupt_index > 0) { | |
437 | int pil = env->interrupt_index & 0xf; | |
438 | int type = env->interrupt_index & 0xf0; | |
439 | ||
440 | if (((type == TT_EXTINT) && | |
441 | cpu_pil_allowed(env, pil)) || | |
442 | type != TT_EXTINT) { | |
443 | env->exception_index = env->interrupt_index; | |
444 | do_interrupt(env); | |
445 | next_tb = 0; | |
446 | } | |
447 | } | |
e95c8d51 FB |
448 | } else if (interrupt_request & CPU_INTERRUPT_TIMER) { |
449 | //do_interrupt(0, 0, 0, 0, 0); | |
450 | env->interrupt_request &= ~CPU_INTERRUPT_TIMER; | |
a90b7318 | 451 | } |
b5ff1b31 FB |
452 | #elif defined(TARGET_ARM) |
453 | if (interrupt_request & CPU_INTERRUPT_FIQ | |
454 | && !(env->uncached_cpsr & CPSR_F)) { | |
455 | env->exception_index = EXCP_FIQ; | |
456 | do_interrupt(env); | |
b5fc09ae | 457 | next_tb = 0; |
b5ff1b31 | 458 | } |
9ee6e8bb PB |
459 | /* ARMv7-M interrupt return works by loading a magic value |
460 | into the PC. On real hardware the load causes the | |
461 | return to occur. The qemu implementation performs the | |
462 | jump normally, then does the exception return when the | |
463 | CPU tries to execute code at the magic address. | |
464 | This will cause the magic PC value to be pushed to | |
465 | the stack if an interrupt occured at the wrong time. | |
466 | We avoid this by disabling interrupts when | |
467 | pc contains a magic address. */ | |
b5ff1b31 | 468 | if (interrupt_request & CPU_INTERRUPT_HARD |
9ee6e8bb PB |
469 | && ((IS_M(env) && env->regs[15] < 0xfffffff0) |
470 | || !(env->uncached_cpsr & CPSR_I))) { | |
b5ff1b31 FB |
471 | env->exception_index = EXCP_IRQ; |
472 | do_interrupt(env); | |
b5fc09ae | 473 | next_tb = 0; |
b5ff1b31 | 474 | } |
fdf9b3e8 | 475 | #elif defined(TARGET_SH4) |
e96e2044 TS |
476 | if (interrupt_request & CPU_INTERRUPT_HARD) { |
477 | do_interrupt(env); | |
b5fc09ae | 478 | next_tb = 0; |
e96e2044 | 479 | } |
eddf68a6 JM |
480 | #elif defined(TARGET_ALPHA) |
481 | if (interrupt_request & CPU_INTERRUPT_HARD) { | |
482 | do_interrupt(env); | |
b5fc09ae | 483 | next_tb = 0; |
eddf68a6 | 484 | } |
f1ccf904 | 485 | #elif defined(TARGET_CRIS) |
1b1a38b0 | 486 | if (interrupt_request & CPU_INTERRUPT_HARD |
fb9fb692 EI |
487 | && (env->pregs[PR_CCS] & I_FLAG) |
488 | && !env->locked_irq) { | |
1b1a38b0 EI |
489 | env->exception_index = EXCP_IRQ; |
490 | do_interrupt(env); | |
491 | next_tb = 0; | |
492 | } | |
493 | if (interrupt_request & CPU_INTERRUPT_NMI | |
494 | && (env->pregs[PR_CCS] & M_FLAG)) { | |
495 | env->exception_index = EXCP_NMI; | |
f1ccf904 | 496 | do_interrupt(env); |
b5fc09ae | 497 | next_tb = 0; |
f1ccf904 | 498 | } |
0633879f PB |
499 | #elif defined(TARGET_M68K) |
500 | if (interrupt_request & CPU_INTERRUPT_HARD | |
501 | && ((env->sr & SR_I) >> SR_I_SHIFT) | |
502 | < env->pending_level) { | |
503 | /* Real hardware gets the interrupt vector via an | |
504 | IACK cycle at this point. Current emulated | |
505 | hardware doesn't rely on this, so we | |
506 | provide/save the vector when the interrupt is | |
507 | first signalled. */ | |
508 | env->exception_index = env->pending_vector; | |
509 | do_interrupt(1); | |
b5fc09ae | 510 | next_tb = 0; |
0633879f | 511 | } |
68a79315 | 512 | #endif |
9d05095e FB |
513 | /* Don't use the cached interupt_request value, |
514 | do_interrupt may have updated the EXITTB flag. */ | |
b5ff1b31 | 515 | if (env->interrupt_request & CPU_INTERRUPT_EXITTB) { |
bf3e8bf1 FB |
516 | env->interrupt_request &= ~CPU_INTERRUPT_EXITTB; |
517 | /* ensure that no TB jump will be modified as | |
518 | the program flow was changed */ | |
b5fc09ae | 519 | next_tb = 0; |
bf3e8bf1 | 520 | } |
be214e6c AJ |
521 | } |
522 | if (unlikely(env->exit_request)) { | |
523 | env->exit_request = 0; | |
524 | env->exception_index = EXCP_INTERRUPT; | |
525 | cpu_loop_exit(); | |
3fb2ded1 | 526 | } |
a73b1fd9 | 527 | #if defined(DEBUG_DISAS) || defined(CONFIG_DEBUG_EXEC) |
8fec2b8c | 528 | if (qemu_loglevel_mask(CPU_LOG_TB_CPU)) { |
3fb2ded1 | 529 | /* restore flags in standard format */ |
ecb644f4 | 530 | #if defined(TARGET_I386) |
a7812ae4 | 531 | env->eflags = env->eflags | helper_cc_compute_all(CC_OP) | (DF & DF_MASK); |
93fcfe39 | 532 | log_cpu_state(env, X86_DUMP_CCOP); |
3fb2ded1 | 533 | env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); |
e6e5906b PB |
534 | #elif defined(TARGET_M68K) |
535 | cpu_m68k_flush_flags(env, env->cc_op); | |
536 | env->cc_op = CC_OP_FLAGS; | |
537 | env->sr = (env->sr & 0xffe0) | |
538 | | env->cc_dest | (env->cc_x << 4); | |
93fcfe39 | 539 | log_cpu_state(env, 0); |
e4533c7a | 540 | #else |
a73b1fd9 | 541 | log_cpu_state(env, 0); |
e4533c7a | 542 | #endif |
3fb2ded1 | 543 | } |
a73b1fd9 | 544 | #endif /* DEBUG_DISAS || CONFIG_DEBUG_EXEC */ |
d5975363 | 545 | spin_lock(&tb_lock); |
8a40a180 | 546 | tb = tb_find_fast(); |
d5975363 PB |
547 | /* Note: we do it here to avoid a gcc bug on Mac OS X when |
548 | doing it in tb_find_slow */ | |
549 | if (tb_invalidated_flag) { | |
550 | /* as some TB could have been invalidated because | |
551 | of memory exceptions while generating the code, we | |
552 | must recompute the hash index here */ | |
553 | next_tb = 0; | |
2e70f6ef | 554 | tb_invalidated_flag = 0; |
d5975363 | 555 | } |
f0667e66 | 556 | #ifdef CONFIG_DEBUG_EXEC |
93fcfe39 AL |
557 | qemu_log_mask(CPU_LOG_EXEC, "Trace 0x%08lx [" TARGET_FMT_lx "] %s\n", |
558 | (long)tb->tc_ptr, tb->pc, | |
559 | lookup_symbol(tb->pc)); | |
9d27abd9 | 560 | #endif |
8a40a180 FB |
561 | /* see if we can patch the calling TB. When the TB |
562 | spans two pages, we cannot safely do a direct | |
563 | jump. */ | |
040f2fb2 | 564 | if (next_tb != 0 && tb->page_addr[1] == -1) { |
b5fc09ae | 565 | tb_add_jump((TranslationBlock *)(next_tb & ~3), next_tb & 3, tb); |
3fb2ded1 | 566 | } |
d5975363 | 567 | spin_unlock(&tb_lock); |
55e8b85e | 568 | |
569 | /* cpu_interrupt might be called while translating the | |
570 | TB, but before it is linked into a potentially | |
571 | infinite loop and becomes env->current_tb. Avoid | |
572 | starting execution if there is a pending interrupt. */ | |
b0052d15 JK |
573 | env->current_tb = tb; |
574 | barrier(); | |
575 | if (likely(!env->exit_request)) { | |
2e70f6ef | 576 | tc_ptr = tb->tc_ptr; |
3fb2ded1 | 577 | /* execute the generated code */ |
dfe5fff3 | 578 | #if defined(__sparc__) && !defined(CONFIG_SOLARIS) |
572a9d4a | 579 | #undef env |
2e70f6ef | 580 | env = cpu_single_env; |
572a9d4a BS |
581 | #define env cpu_single_env |
582 | #endif | |
2e70f6ef | 583 | next_tb = tcg_qemu_tb_exec(tc_ptr); |
2e70f6ef | 584 | if ((next_tb & 3) == 2) { |
bf20dc07 | 585 | /* Instruction counter expired. */ |
2e70f6ef PB |
586 | int insns_left; |
587 | tb = (TranslationBlock *)(long)(next_tb & ~3); | |
588 | /* Restore PC. */ | |
622ed360 | 589 | cpu_pc_from_tb(env, tb); |
2e70f6ef PB |
590 | insns_left = env->icount_decr.u32; |
591 | if (env->icount_extra && insns_left >= 0) { | |
592 | /* Refill decrementer and continue execution. */ | |
593 | env->icount_extra += insns_left; | |
594 | if (env->icount_extra > 0xffff) { | |
595 | insns_left = 0xffff; | |
596 | } else { | |
597 | insns_left = env->icount_extra; | |
598 | } | |
599 | env->icount_extra -= insns_left; | |
600 | env->icount_decr.u16.low = insns_left; | |
601 | } else { | |
602 | if (insns_left > 0) { | |
603 | /* Execute remaining instructions. */ | |
604 | cpu_exec_nocache(insns_left, tb); | |
605 | } | |
606 | env->exception_index = EXCP_INTERRUPT; | |
607 | next_tb = 0; | |
608 | cpu_loop_exit(); | |
609 | } | |
610 | } | |
611 | } | |
b0052d15 | 612 | env->current_tb = NULL; |
4cbf74b6 FB |
613 | /* reset soft MMU for next block (it can currently |
614 | only be set by a memory fault) */ | |
50a518e3 | 615 | } /* for(;;) */ |
7d13299d | 616 | } |
3fb2ded1 FB |
617 | } /* for(;;) */ |
618 | ||
7d13299d | 619 | |
e4533c7a | 620 | #if defined(TARGET_I386) |
9de5e440 | 621 | /* restore flags in standard format */ |
a7812ae4 | 622 | env->eflags = env->eflags | helper_cc_compute_all(CC_OP) | (DF & DF_MASK); |
e4533c7a | 623 | #elif defined(TARGET_ARM) |
b7bcbe95 | 624 | /* XXX: Save/restore host fpu exception state?. */ |
93ac68bc | 625 | #elif defined(TARGET_SPARC) |
67867308 | 626 | #elif defined(TARGET_PPC) |
e6e5906b PB |
627 | #elif defined(TARGET_M68K) |
628 | cpu_m68k_flush_flags(env, env->cc_op); | |
629 | env->cc_op = CC_OP_FLAGS; | |
630 | env->sr = (env->sr & 0xffe0) | |
631 | | env->cc_dest | (env->cc_x << 4); | |
b779e29e | 632 | #elif defined(TARGET_MICROBLAZE) |
6af0bf9c | 633 | #elif defined(TARGET_MIPS) |
fdf9b3e8 | 634 | #elif defined(TARGET_SH4) |
eddf68a6 | 635 | #elif defined(TARGET_ALPHA) |
f1ccf904 | 636 | #elif defined(TARGET_CRIS) |
10ec5117 | 637 | #elif defined(TARGET_S390X) |
fdf9b3e8 | 638 | /* XXXXX */ |
e4533c7a FB |
639 | #else |
640 | #error unsupported target CPU | |
641 | #endif | |
1057eaa7 PB |
642 | |
643 | /* restore global registers */ | |
1d93f0f0 | 644 | barrier(); |
24ebf5f3 | 645 | env = (void *) saved_env_reg; |
1057eaa7 | 646 | |
6a00d601 | 647 | /* fail safe : never use cpu_single_env outside cpu_exec() */ |
5fafdf24 | 648 | cpu_single_env = NULL; |
7d13299d FB |
649 | return ret; |
650 | } | |
6dbad63e | 651 | |
fbf9eeb3 FB |
652 | /* must only be called from the generated code as an exception can be |
653 | generated */ | |
654 | void tb_invalidate_page_range(target_ulong start, target_ulong end) | |
655 | { | |
dc5d0b3d FB |
656 | /* XXX: cannot enable it yet because it yields to MMU exception |
657 | where NIP != read address on PowerPC */ | |
658 | #if 0 | |
fbf9eeb3 FB |
659 | target_ulong phys_addr; |
660 | phys_addr = get_phys_addr_code(env, start); | |
661 | tb_invalidate_phys_page_range(phys_addr, phys_addr + end - start, 0); | |
dc5d0b3d | 662 | #endif |
fbf9eeb3 FB |
663 | } |
664 | ||
1a18c71b | 665 | #if defined(TARGET_I386) && defined(CONFIG_USER_ONLY) |
e4533c7a | 666 | |
6dbad63e FB |
667 | void cpu_x86_load_seg(CPUX86State *s, int seg_reg, int selector) |
668 | { | |
669 | CPUX86State *saved_env; | |
670 | ||
671 | saved_env = env; | |
672 | env = s; | |
a412ac57 | 673 | if (!(env->cr[0] & CR0_PE_MASK) || (env->eflags & VM_MASK)) { |
a513fe19 | 674 | selector &= 0xffff; |
5fafdf24 | 675 | cpu_x86_load_seg_cache(env, seg_reg, selector, |
c27004ec | 676 | (selector << 4), 0xffff, 0); |
a513fe19 | 677 | } else { |
5d97559d | 678 | helper_load_seg(seg_reg, selector); |
a513fe19 | 679 | } |
6dbad63e FB |
680 | env = saved_env; |
681 | } | |
9de5e440 | 682 | |
6f12a2a6 | 683 | void cpu_x86_fsave(CPUX86State *s, target_ulong ptr, int data32) |
d0a1ffc9 FB |
684 | { |
685 | CPUX86State *saved_env; | |
686 | ||
687 | saved_env = env; | |
688 | env = s; | |
3b46e624 | 689 | |
6f12a2a6 | 690 | helper_fsave(ptr, data32); |
d0a1ffc9 FB |
691 | |
692 | env = saved_env; | |
693 | } | |
694 | ||
6f12a2a6 | 695 | void cpu_x86_frstor(CPUX86State *s, target_ulong ptr, int data32) |
d0a1ffc9 FB |
696 | { |
697 | CPUX86State *saved_env; | |
698 | ||
699 | saved_env = env; | |
700 | env = s; | |
3b46e624 | 701 | |
6f12a2a6 | 702 | helper_frstor(ptr, data32); |
d0a1ffc9 FB |
703 | |
704 | env = saved_env; | |
705 | } | |
706 | ||
e4533c7a FB |
707 | #endif /* TARGET_I386 */ |
708 | ||
67b915a5 FB |
709 | #if !defined(CONFIG_SOFTMMU) |
710 | ||
3fb2ded1 | 711 | #if defined(TARGET_I386) |
0b5c1ce8 NF |
712 | #define EXCEPTION_ACTION raise_exception_err(env->exception_index, env->error_code) |
713 | #else | |
714 | #define EXCEPTION_ACTION cpu_loop_exit() | |
715 | #endif | |
3fb2ded1 | 716 | |
b56dad1c | 717 | /* 'pc' is the host PC at which the exception was raised. 'address' is |
fd6ce8f6 FB |
718 | the effective address of the memory exception. 'is_write' is 1 if a |
719 | write caused the exception and otherwise 0'. 'old_set' is the | |
720 | signal set which should be restored */ | |
2b413144 | 721 | static inline int handle_cpu_signal(unsigned long pc, unsigned long address, |
5fafdf24 | 722 | int is_write, sigset_t *old_set, |
bf3e8bf1 | 723 | void *puc) |
9de5e440 | 724 | { |
a513fe19 FB |
725 | TranslationBlock *tb; |
726 | int ret; | |
68a79315 | 727 | |
83479e77 FB |
728 | if (cpu_single_env) |
729 | env = cpu_single_env; /* XXX: find a correct solution for multithread */ | |
fd6ce8f6 | 730 | #if defined(DEBUG_SIGNAL) |
5fafdf24 | 731 | qemu_printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n", |
bf3e8bf1 | 732 | pc, address, is_write, *(unsigned long *)old_set); |
9de5e440 | 733 | #endif |
25eb4484 | 734 | /* XXX: locking issue */ |
53a5960a | 735 | if (is_write && page_unprotect(h2g(address), pc, puc)) { |
fd6ce8f6 FB |
736 | return 1; |
737 | } | |
fbf9eeb3 | 738 | |
3fb2ded1 | 739 | /* see if it is an MMU fault */ |
0b5c1ce8 | 740 | ret = cpu_handle_mmu_fault(env, address, is_write, MMU_USER_IDX, 0); |
68016c62 FB |
741 | if (ret < 0) |
742 | return 0; /* not an MMU fault */ | |
743 | if (ret == 0) | |
744 | return 1; /* the MMU fault was handled without causing real CPU fault */ | |
745 | /* now we have a real cpu fault */ | |
746 | tb = tb_find_pc(pc); | |
747 | if (tb) { | |
748 | /* the PC is inside the translated code. It means that we have | |
749 | a virtual CPU fault */ | |
750 | cpu_restore_state(tb, env, pc, puc); | |
751 | } | |
68016c62 | 752 | |
68016c62 FB |
753 | /* we restore the process signal mask as the sigreturn should |
754 | do it (XXX: use sigsetjmp) */ | |
755 | sigprocmask(SIG_SETMASK, old_set, NULL); | |
0b5c1ce8 | 756 | EXCEPTION_ACTION; |
e6e5906b | 757 | |
e6e5906b | 758 | /* never comes here */ |
67867308 FB |
759 | return 1; |
760 | } | |
6af0bf9c | 761 | |
2b413144 FB |
762 | #if defined(__i386__) |
763 | ||
d8ecc0b9 FB |
764 | #if defined(__APPLE__) |
765 | # include <sys/ucontext.h> | |
766 | ||
767 | # define EIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext->ss.eip)) | |
768 | # define TRAP_sig(context) ((context)->uc_mcontext->es.trapno) | |
769 | # define ERROR_sig(context) ((context)->uc_mcontext->es.err) | |
d39bb24a | 770 | # define MASK_sig(context) ((context)->uc_sigmask) |
78cfb07f JL |
771 | #elif defined (__NetBSD__) |
772 | # include <ucontext.h> | |
773 | ||
774 | # define EIP_sig(context) ((context)->uc_mcontext.__gregs[_REG_EIP]) | |
775 | # define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO]) | |
776 | # define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR]) | |
777 | # define MASK_sig(context) ((context)->uc_sigmask) | |
778 | #elif defined (__FreeBSD__) || defined(__DragonFly__) | |
779 | # include <ucontext.h> | |
780 | ||
781 | # define EIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.mc_eip)) | |
782 | # define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno) | |
783 | # define ERROR_sig(context) ((context)->uc_mcontext.mc_err) | |
784 | # define MASK_sig(context) ((context)->uc_sigmask) | |
d39bb24a BS |
785 | #elif defined(__OpenBSD__) |
786 | # define EIP_sig(context) ((context)->sc_eip) | |
787 | # define TRAP_sig(context) ((context)->sc_trapno) | |
788 | # define ERROR_sig(context) ((context)->sc_err) | |
789 | # define MASK_sig(context) ((context)->sc_mask) | |
d8ecc0b9 FB |
790 | #else |
791 | # define EIP_sig(context) ((context)->uc_mcontext.gregs[REG_EIP]) | |
792 | # define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO]) | |
793 | # define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR]) | |
d39bb24a | 794 | # define MASK_sig(context) ((context)->uc_sigmask) |
d8ecc0b9 FB |
795 | #endif |
796 | ||
5fafdf24 | 797 | int cpu_signal_handler(int host_signum, void *pinfo, |
e4533c7a | 798 | void *puc) |
9de5e440 | 799 | { |
5a7b542b | 800 | siginfo_t *info = pinfo; |
78cfb07f JL |
801 | #if defined(__NetBSD__) || defined (__FreeBSD__) || defined(__DragonFly__) |
802 | ucontext_t *uc = puc; | |
803 | #elif defined(__OpenBSD__) | |
d39bb24a BS |
804 | struct sigcontext *uc = puc; |
805 | #else | |
9de5e440 | 806 | struct ucontext *uc = puc; |
d39bb24a | 807 | #endif |
9de5e440 | 808 | unsigned long pc; |
bf3e8bf1 | 809 | int trapno; |
97eb5b14 | 810 | |
d691f669 FB |
811 | #ifndef REG_EIP |
812 | /* for glibc 2.1 */ | |
fd6ce8f6 FB |
813 | #define REG_EIP EIP |
814 | #define REG_ERR ERR | |
815 | #define REG_TRAPNO TRAPNO | |
d691f669 | 816 | #endif |
d8ecc0b9 FB |
817 | pc = EIP_sig(uc); |
818 | trapno = TRAP_sig(uc); | |
ec6338ba FB |
819 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
820 | trapno == 0xe ? | |
821 | (ERROR_sig(uc) >> 1) & 1 : 0, | |
d39bb24a | 822 | &MASK_sig(uc), puc); |
2b413144 FB |
823 | } |
824 | ||
bc51c5c9 FB |
825 | #elif defined(__x86_64__) |
826 | ||
b3efe5c8 | 827 | #ifdef __NetBSD__ |
d397abbd BS |
828 | #define PC_sig(context) _UC_MACHINE_PC(context) |
829 | #define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO]) | |
830 | #define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR]) | |
831 | #define MASK_sig(context) ((context)->uc_sigmask) | |
832 | #elif defined(__OpenBSD__) | |
833 | #define PC_sig(context) ((context)->sc_rip) | |
834 | #define TRAP_sig(context) ((context)->sc_trapno) | |
835 | #define ERROR_sig(context) ((context)->sc_err) | |
836 | #define MASK_sig(context) ((context)->sc_mask) | |
78cfb07f JL |
837 | #elif defined (__FreeBSD__) || defined(__DragonFly__) |
838 | #include <ucontext.h> | |
839 | ||
840 | #define PC_sig(context) (*((unsigned long*)&(context)->uc_mcontext.mc_rip)) | |
841 | #define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno) | |
842 | #define ERROR_sig(context) ((context)->uc_mcontext.mc_err) | |
843 | #define MASK_sig(context) ((context)->uc_sigmask) | |
b3efe5c8 | 844 | #else |
d397abbd BS |
845 | #define PC_sig(context) ((context)->uc_mcontext.gregs[REG_RIP]) |
846 | #define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO]) | |
847 | #define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR]) | |
848 | #define MASK_sig(context) ((context)->uc_sigmask) | |
b3efe5c8 BS |
849 | #endif |
850 | ||
5a7b542b | 851 | int cpu_signal_handler(int host_signum, void *pinfo, |
bc51c5c9 FB |
852 | void *puc) |
853 | { | |
5a7b542b | 854 | siginfo_t *info = pinfo; |
bc51c5c9 | 855 | unsigned long pc; |
78cfb07f | 856 | #if defined(__NetBSD__) || defined (__FreeBSD__) || defined(__DragonFly__) |
b3efe5c8 | 857 | ucontext_t *uc = puc; |
d397abbd BS |
858 | #elif defined(__OpenBSD__) |
859 | struct sigcontext *uc = puc; | |
b3efe5c8 BS |
860 | #else |
861 | struct ucontext *uc = puc; | |
862 | #endif | |
bc51c5c9 | 863 | |
d397abbd | 864 | pc = PC_sig(uc); |
5fafdf24 | 865 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
d397abbd BS |
866 | TRAP_sig(uc) == 0xe ? |
867 | (ERROR_sig(uc) >> 1) & 1 : 0, | |
868 | &MASK_sig(uc), puc); | |
bc51c5c9 FB |
869 | } |
870 | ||
e58ffeb3 | 871 | #elif defined(_ARCH_PPC) |
2b413144 | 872 | |
83fb7adf FB |
873 | /*********************************************************************** |
874 | * signal context platform-specific definitions | |
875 | * From Wine | |
876 | */ | |
877 | #ifdef linux | |
878 | /* All Registers access - only for local access */ | |
879 | # define REG_sig(reg_name, context) ((context)->uc_mcontext.regs->reg_name) | |
880 | /* Gpr Registers access */ | |
881 | # define GPR_sig(reg_num, context) REG_sig(gpr[reg_num], context) | |
882 | # define IAR_sig(context) REG_sig(nip, context) /* Program counter */ | |
883 | # define MSR_sig(context) REG_sig(msr, context) /* Machine State Register (Supervisor) */ | |
884 | # define CTR_sig(context) REG_sig(ctr, context) /* Count register */ | |
885 | # define XER_sig(context) REG_sig(xer, context) /* User's integer exception register */ | |
886 | # define LR_sig(context) REG_sig(link, context) /* Link register */ | |
887 | # define CR_sig(context) REG_sig(ccr, context) /* Condition register */ | |
888 | /* Float Registers access */ | |
889 | # define FLOAT_sig(reg_num, context) (((double*)((char*)((context)->uc_mcontext.regs+48*4)))[reg_num]) | |
890 | # define FPSCR_sig(context) (*(int*)((char*)((context)->uc_mcontext.regs+(48+32*2)*4))) | |
891 | /* Exception Registers access */ | |
892 | # define DAR_sig(context) REG_sig(dar, context) | |
893 | # define DSISR_sig(context) REG_sig(dsisr, context) | |
894 | # define TRAP_sig(context) REG_sig(trap, context) | |
895 | #endif /* linux */ | |
896 | ||
58d9b1e0 JL |
897 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
898 | #include <ucontext.h> | |
899 | # define IAR_sig(context) ((context)->uc_mcontext.mc_srr0) | |
900 | # define MSR_sig(context) ((context)->uc_mcontext.mc_srr1) | |
901 | # define CTR_sig(context) ((context)->uc_mcontext.mc_ctr) | |
902 | # define XER_sig(context) ((context)->uc_mcontext.mc_xer) | |
903 | # define LR_sig(context) ((context)->uc_mcontext.mc_lr) | |
904 | # define CR_sig(context) ((context)->uc_mcontext.mc_cr) | |
905 | /* Exception Registers access */ | |
906 | # define DAR_sig(context) ((context)->uc_mcontext.mc_dar) | |
907 | # define DSISR_sig(context) ((context)->uc_mcontext.mc_dsisr) | |
908 | # define TRAP_sig(context) ((context)->uc_mcontext.mc_exc) | |
909 | #endif /* __FreeBSD__|| __FreeBSD_kernel__ */ | |
910 | ||
83fb7adf FB |
911 | #ifdef __APPLE__ |
912 | # include <sys/ucontext.h> | |
913 | typedef struct ucontext SIGCONTEXT; | |
914 | /* All Registers access - only for local access */ | |
915 | # define REG_sig(reg_name, context) ((context)->uc_mcontext->ss.reg_name) | |
916 | # define FLOATREG_sig(reg_name, context) ((context)->uc_mcontext->fs.reg_name) | |
917 | # define EXCEPREG_sig(reg_name, context) ((context)->uc_mcontext->es.reg_name) | |
918 | # define VECREG_sig(reg_name, context) ((context)->uc_mcontext->vs.reg_name) | |
919 | /* Gpr Registers access */ | |
920 | # define GPR_sig(reg_num, context) REG_sig(r##reg_num, context) | |
921 | # define IAR_sig(context) REG_sig(srr0, context) /* Program counter */ | |
922 | # define MSR_sig(context) REG_sig(srr1, context) /* Machine State Register (Supervisor) */ | |
923 | # define CTR_sig(context) REG_sig(ctr, context) | |
924 | # define XER_sig(context) REG_sig(xer, context) /* Link register */ | |
925 | # define LR_sig(context) REG_sig(lr, context) /* User's integer exception register */ | |
926 | # define CR_sig(context) REG_sig(cr, context) /* Condition register */ | |
927 | /* Float Registers access */ | |
928 | # define FLOAT_sig(reg_num, context) FLOATREG_sig(fpregs[reg_num], context) | |
929 | # define FPSCR_sig(context) ((double)FLOATREG_sig(fpscr, context)) | |
930 | /* Exception Registers access */ | |
931 | # define DAR_sig(context) EXCEPREG_sig(dar, context) /* Fault registers for coredump */ | |
932 | # define DSISR_sig(context) EXCEPREG_sig(dsisr, context) | |
933 | # define TRAP_sig(context) EXCEPREG_sig(exception, context) /* number of powerpc exception taken */ | |
934 | #endif /* __APPLE__ */ | |
935 | ||
5fafdf24 | 936 | int cpu_signal_handler(int host_signum, void *pinfo, |
e4533c7a | 937 | void *puc) |
2b413144 | 938 | { |
5a7b542b | 939 | siginfo_t *info = pinfo; |
58d9b1e0 JL |
940 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
941 | ucontext_t *uc = puc; | |
942 | #else | |
25eb4484 | 943 | struct ucontext *uc = puc; |
58d9b1e0 | 944 | #endif |
25eb4484 | 945 | unsigned long pc; |
25eb4484 FB |
946 | int is_write; |
947 | ||
83fb7adf | 948 | pc = IAR_sig(uc); |
25eb4484 FB |
949 | is_write = 0; |
950 | #if 0 | |
951 | /* ppc 4xx case */ | |
83fb7adf | 952 | if (DSISR_sig(uc) & 0x00800000) |
25eb4484 FB |
953 | is_write = 1; |
954 | #else | |
83fb7adf | 955 | if (TRAP_sig(uc) != 0x400 && (DSISR_sig(uc) & 0x02000000)) |
25eb4484 FB |
956 | is_write = 1; |
957 | #endif | |
5fafdf24 | 958 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
bf3e8bf1 | 959 | is_write, &uc->uc_sigmask, puc); |
2b413144 FB |
960 | } |
961 | ||
2f87c607 FB |
962 | #elif defined(__alpha__) |
963 | ||
5fafdf24 | 964 | int cpu_signal_handler(int host_signum, void *pinfo, |
2f87c607 FB |
965 | void *puc) |
966 | { | |
5a7b542b | 967 | siginfo_t *info = pinfo; |
2f87c607 FB |
968 | struct ucontext *uc = puc; |
969 | uint32_t *pc = uc->uc_mcontext.sc_pc; | |
970 | uint32_t insn = *pc; | |
971 | int is_write = 0; | |
972 | ||
8c6939c0 | 973 | /* XXX: need kernel patch to get write flag faster */ |
2f87c607 FB |
974 | switch (insn >> 26) { |
975 | case 0x0d: // stw | |
976 | case 0x0e: // stb | |
977 | case 0x0f: // stq_u | |
978 | case 0x24: // stf | |
979 | case 0x25: // stg | |
980 | case 0x26: // sts | |
981 | case 0x27: // stt | |
982 | case 0x2c: // stl | |
983 | case 0x2d: // stq | |
984 | case 0x2e: // stl_c | |
985 | case 0x2f: // stq_c | |
986 | is_write = 1; | |
987 | } | |
988 | ||
5fafdf24 | 989 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
bf3e8bf1 | 990 | is_write, &uc->uc_sigmask, puc); |
2f87c607 | 991 | } |
8c6939c0 FB |
992 | #elif defined(__sparc__) |
993 | ||
5fafdf24 | 994 | int cpu_signal_handler(int host_signum, void *pinfo, |
e4533c7a | 995 | void *puc) |
8c6939c0 | 996 | { |
5a7b542b | 997 | siginfo_t *info = pinfo; |
8c6939c0 FB |
998 | int is_write; |
999 | uint32_t insn; | |
dfe5fff3 | 1000 | #if !defined(__arch64__) || defined(CONFIG_SOLARIS) |
c9e1e2b0 BS |
1001 | uint32_t *regs = (uint32_t *)(info + 1); |
1002 | void *sigmask = (regs + 20); | |
8c6939c0 | 1003 | /* XXX: is there a standard glibc define ? */ |
c9e1e2b0 BS |
1004 | unsigned long pc = regs[1]; |
1005 | #else | |
84778508 | 1006 | #ifdef __linux__ |
c9e1e2b0 BS |
1007 | struct sigcontext *sc = puc; |
1008 | unsigned long pc = sc->sigc_regs.tpc; | |
1009 | void *sigmask = (void *)sc->sigc_mask; | |
84778508 BS |
1010 | #elif defined(__OpenBSD__) |
1011 | struct sigcontext *uc = puc; | |
1012 | unsigned long pc = uc->sc_pc; | |
1013 | void *sigmask = (void *)(long)uc->sc_mask; | |
1014 | #endif | |
c9e1e2b0 BS |
1015 | #endif |
1016 | ||
8c6939c0 FB |
1017 | /* XXX: need kernel patch to get write flag faster */ |
1018 | is_write = 0; | |
1019 | insn = *(uint32_t *)pc; | |
1020 | if ((insn >> 30) == 3) { | |
1021 | switch((insn >> 19) & 0x3f) { | |
1022 | case 0x05: // stb | |
d877fa5a | 1023 | case 0x15: // stba |
8c6939c0 | 1024 | case 0x06: // sth |
d877fa5a | 1025 | case 0x16: // stha |
8c6939c0 | 1026 | case 0x04: // st |
d877fa5a | 1027 | case 0x14: // sta |
8c6939c0 | 1028 | case 0x07: // std |
d877fa5a BS |
1029 | case 0x17: // stda |
1030 | case 0x0e: // stx | |
1031 | case 0x1e: // stxa | |
8c6939c0 | 1032 | case 0x24: // stf |
d877fa5a | 1033 | case 0x34: // stfa |
8c6939c0 | 1034 | case 0x27: // stdf |
d877fa5a BS |
1035 | case 0x37: // stdfa |
1036 | case 0x26: // stqf | |
1037 | case 0x36: // stqfa | |
8c6939c0 | 1038 | case 0x25: // stfsr |
d877fa5a BS |
1039 | case 0x3c: // casa |
1040 | case 0x3e: // casxa | |
8c6939c0 FB |
1041 | is_write = 1; |
1042 | break; | |
1043 | } | |
1044 | } | |
5fafdf24 | 1045 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
bf3e8bf1 | 1046 | is_write, sigmask, NULL); |
8c6939c0 FB |
1047 | } |
1048 | ||
1049 | #elif defined(__arm__) | |
1050 | ||
5fafdf24 | 1051 | int cpu_signal_handler(int host_signum, void *pinfo, |
e4533c7a | 1052 | void *puc) |
8c6939c0 | 1053 | { |
5a7b542b | 1054 | siginfo_t *info = pinfo; |
8c6939c0 FB |
1055 | struct ucontext *uc = puc; |
1056 | unsigned long pc; | |
1057 | int is_write; | |
3b46e624 | 1058 | |
48bbf11b | 1059 | #if (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 3)) |
5c49b363 AZ |
1060 | pc = uc->uc_mcontext.gregs[R15]; |
1061 | #else | |
4eee57f5 | 1062 | pc = uc->uc_mcontext.arm_pc; |
5c49b363 | 1063 | #endif |
8c6939c0 FB |
1064 | /* XXX: compute is_write */ |
1065 | is_write = 0; | |
5fafdf24 | 1066 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
8c6939c0 | 1067 | is_write, |
f3a9676a | 1068 | &uc->uc_sigmask, puc); |
8c6939c0 FB |
1069 | } |
1070 | ||
38e584a0 FB |
1071 | #elif defined(__mc68000) |
1072 | ||
5fafdf24 | 1073 | int cpu_signal_handler(int host_signum, void *pinfo, |
38e584a0 FB |
1074 | void *puc) |
1075 | { | |
5a7b542b | 1076 | siginfo_t *info = pinfo; |
38e584a0 FB |
1077 | struct ucontext *uc = puc; |
1078 | unsigned long pc; | |
1079 | int is_write; | |
3b46e624 | 1080 | |
38e584a0 FB |
1081 | pc = uc->uc_mcontext.gregs[16]; |
1082 | /* XXX: compute is_write */ | |
1083 | is_write = 0; | |
5fafdf24 | 1084 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
38e584a0 | 1085 | is_write, |
bf3e8bf1 | 1086 | &uc->uc_sigmask, puc); |
38e584a0 FB |
1087 | } |
1088 | ||
b8076a74 FB |
1089 | #elif defined(__ia64) |
1090 | ||
1091 | #ifndef __ISR_VALID | |
1092 | /* This ought to be in <bits/siginfo.h>... */ | |
1093 | # define __ISR_VALID 1 | |
b8076a74 FB |
1094 | #endif |
1095 | ||
5a7b542b | 1096 | int cpu_signal_handler(int host_signum, void *pinfo, void *puc) |
b8076a74 | 1097 | { |
5a7b542b | 1098 | siginfo_t *info = pinfo; |
b8076a74 FB |
1099 | struct ucontext *uc = puc; |
1100 | unsigned long ip; | |
1101 | int is_write = 0; | |
1102 | ||
1103 | ip = uc->uc_mcontext.sc_ip; | |
1104 | switch (host_signum) { | |
1105 | case SIGILL: | |
1106 | case SIGFPE: | |
1107 | case SIGSEGV: | |
1108 | case SIGBUS: | |
1109 | case SIGTRAP: | |
fd4a43e4 | 1110 | if (info->si_code && (info->si_segvflags & __ISR_VALID)) |
b8076a74 FB |
1111 | /* ISR.W (write-access) is bit 33: */ |
1112 | is_write = (info->si_isr >> 33) & 1; | |
1113 | break; | |
1114 | ||
1115 | default: | |
1116 | break; | |
1117 | } | |
1118 | return handle_cpu_signal(ip, (unsigned long)info->si_addr, | |
1119 | is_write, | |
60e99246 | 1120 | (sigset_t *)&uc->uc_sigmask, puc); |
b8076a74 FB |
1121 | } |
1122 | ||
90cb9493 FB |
1123 | #elif defined(__s390__) |
1124 | ||
5fafdf24 | 1125 | int cpu_signal_handler(int host_signum, void *pinfo, |
90cb9493 FB |
1126 | void *puc) |
1127 | { | |
5a7b542b | 1128 | siginfo_t *info = pinfo; |
90cb9493 FB |
1129 | struct ucontext *uc = puc; |
1130 | unsigned long pc; | |
6a1621b9 RH |
1131 | uint16_t *pinsn; |
1132 | int is_write = 0; | |
3b46e624 | 1133 | |
90cb9493 | 1134 | pc = uc->uc_mcontext.psw.addr; |
6a1621b9 RH |
1135 | |
1136 | /* ??? On linux, the non-rt signal handler has 4 (!) arguments instead | |
1137 | of the normal 2 arguments. The 3rd argument contains the "int_code" | |
1138 | from the hardware which does in fact contain the is_write value. | |
1139 | The rt signal handler, as far as I can tell, does not give this value | |
1140 | at all. Not that we could get to it from here even if it were. */ | |
1141 | /* ??? This is not even close to complete, since it ignores all | |
1142 | of the read-modify-write instructions. */ | |
1143 | pinsn = (uint16_t *)pc; | |
1144 | switch (pinsn[0] >> 8) { | |
1145 | case 0x50: /* ST */ | |
1146 | case 0x42: /* STC */ | |
1147 | case 0x40: /* STH */ | |
1148 | is_write = 1; | |
1149 | break; | |
1150 | case 0xc4: /* RIL format insns */ | |
1151 | switch (pinsn[0] & 0xf) { | |
1152 | case 0xf: /* STRL */ | |
1153 | case 0xb: /* STGRL */ | |
1154 | case 0x7: /* STHRL */ | |
1155 | is_write = 1; | |
1156 | } | |
1157 | break; | |
1158 | case 0xe3: /* RXY format insns */ | |
1159 | switch (pinsn[2] & 0xff) { | |
1160 | case 0x50: /* STY */ | |
1161 | case 0x24: /* STG */ | |
1162 | case 0x72: /* STCY */ | |
1163 | case 0x70: /* STHY */ | |
1164 | case 0x8e: /* STPQ */ | |
1165 | case 0x3f: /* STRVH */ | |
1166 | case 0x3e: /* STRV */ | |
1167 | case 0x2f: /* STRVG */ | |
1168 | is_write = 1; | |
1169 | } | |
1170 | break; | |
1171 | } | |
5fafdf24 | 1172 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
c4b89d18 TS |
1173 | is_write, &uc->uc_sigmask, puc); |
1174 | } | |
1175 | ||
1176 | #elif defined(__mips__) | |
1177 | ||
5fafdf24 | 1178 | int cpu_signal_handler(int host_signum, void *pinfo, |
c4b89d18 TS |
1179 | void *puc) |
1180 | { | |
9617efe8 | 1181 | siginfo_t *info = pinfo; |
c4b89d18 TS |
1182 | struct ucontext *uc = puc; |
1183 | greg_t pc = uc->uc_mcontext.pc; | |
1184 | int is_write; | |
3b46e624 | 1185 | |
c4b89d18 TS |
1186 | /* XXX: compute is_write */ |
1187 | is_write = 0; | |
5fafdf24 | 1188 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
c4b89d18 | 1189 | is_write, &uc->uc_sigmask, puc); |
90cb9493 FB |
1190 | } |
1191 | ||
f54b3f92 AJ |
1192 | #elif defined(__hppa__) |
1193 | ||
1194 | int cpu_signal_handler(int host_signum, void *pinfo, | |
1195 | void *puc) | |
1196 | { | |
1197 | struct siginfo *info = pinfo; | |
1198 | struct ucontext *uc = puc; | |
f57040be RH |
1199 | unsigned long pc = uc->uc_mcontext.sc_iaoq[0]; |
1200 | uint32_t insn = *(uint32_t *)pc; | |
1201 | int is_write = 0; | |
1202 | ||
1203 | /* XXX: need kernel patch to get write flag faster. */ | |
1204 | switch (insn >> 26) { | |
1205 | case 0x1a: /* STW */ | |
1206 | case 0x19: /* STH */ | |
1207 | case 0x18: /* STB */ | |
1208 | case 0x1b: /* STWM */ | |
1209 | is_write = 1; | |
1210 | break; | |
1211 | ||
1212 | case 0x09: /* CSTWX, FSTWX, FSTWS */ | |
1213 | case 0x0b: /* CSTDX, FSTDX, FSTDS */ | |
1214 | /* Distinguish from coprocessor load ... */ | |
1215 | is_write = (insn >> 9) & 1; | |
1216 | break; | |
1217 | ||
1218 | case 0x03: | |
1219 | switch ((insn >> 6) & 15) { | |
1220 | case 0xa: /* STWS */ | |
1221 | case 0x9: /* STHS */ | |
1222 | case 0x8: /* STBS */ | |
1223 | case 0xe: /* STWAS */ | |
1224 | case 0xc: /* STBYS */ | |
1225 | is_write = 1; | |
1226 | } | |
1227 | break; | |
1228 | } | |
f54b3f92 | 1229 | |
f54b3f92 | 1230 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
f57040be | 1231 | is_write, &uc->uc_sigmask, puc); |
f54b3f92 AJ |
1232 | } |
1233 | ||
9de5e440 | 1234 | #else |
2b413144 | 1235 | |
3fb2ded1 | 1236 | #error host CPU specific signal handler needed |
2b413144 | 1237 | |
9de5e440 | 1238 | #endif |
67b915a5 FB |
1239 | |
1240 | #endif /* !defined(CONFIG_SOFTMMU) */ |