The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1 | /* |
| 2 | * i386 emulator main execution loop |
| 3 | * |
| 4 | * Copyright (c) 2003-2005 Fabrice Bellard |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This library is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 18 | */ |
| 19 | #include "config.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 20 | #include "exec.h" |
| 21 | #include "disas.h" |
| 22 | #include "tcg.h" |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 23 | #include "kvm.h" |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 24 | #include "qemu-barrier.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 25 | |
| 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> |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 37 | #ifdef __linux__ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 38 | #include <sys/ucontext.h> |
| 39 | #endif |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 40 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 41 | |
David 'Digit' Turner | 2c538c8 | 2010-05-10 16:48:20 -0700 | [diff] [blame] | 42 | #if defined(__sparc__) && !defined(CONFIG_SOLARIS) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 43 | // Work around ugly bugs in glibc that mangle global register contents |
| 44 | #undef env |
| 45 | #define env cpu_single_env |
| 46 | #endif |
| 47 | |
| 48 | int tb_invalidated_flag; |
| 49 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 50 | //#define CONFIG_DEBUG_EXEC |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 51 | //#define DEBUG_SIGNAL |
| 52 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 53 | int qemu_cpu_has_work(CPUState *env) |
| 54 | { |
| 55 | return cpu_has_work(env); |
| 56 | } |
| 57 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 58 | void cpu_loop_exit(void) |
| 59 | { |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 60 | env->current_tb = NULL; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 61 | longjmp(env->jmp_env, 1); |
| 62 | } |
| 63 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 64 | /* exit the current TB from a signal handler. The host registers are |
| 65 | restored in a state compatible with the CPU emulator |
| 66 | */ |
| 67 | void cpu_resume_from_signal(CPUState *env1, void *puc) |
| 68 | { |
| 69 | #if !defined(CONFIG_SOFTMMU) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 70 | #ifdef __linux__ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 71 | struct ucontext *uc = puc; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 72 | #elif defined(__OpenBSD__) |
| 73 | struct sigcontext *uc = puc; |
| 74 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 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 ? */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 84 | #ifdef __linux__ |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 85 | #ifdef __ia64 |
| 86 | sigprocmask(SIG_SETMASK, (sigset_t *)&uc->uc_sigmask, NULL); |
| 87 | #else |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 88 | sigprocmask(SIG_SETMASK, &uc->uc_sigmask, NULL); |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 89 | #endif |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 90 | #elif defined(__OpenBSD__) |
| 91 | sigprocmask(SIG_SETMASK, &uc->sc_mask, NULL); |
| 92 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 93 | } |
| 94 | #endif |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 95 | env->exception_index = -1; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 96 | longjmp(env->jmp_env, 1); |
| 97 | } |
| 98 | |
| 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); |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 116 | env->current_tb = NULL; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 117 | |
| 118 | if ((next_tb & 3) == 2) { |
| 119 | /* Restore PC. This may happen if async event occurs before |
| 120 | the TB starts executing. */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 121 | cpu_pc_from_tb(env, tb); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 122 | } |
| 123 | tb_phys_invalidate(tb, -1); |
| 124 | tb_free(tb); |
| 125 | } |
| 126 | |
| 127 | static TranslationBlock *tb_find_slow(target_ulong pc, |
| 128 | target_ulong cs_base, |
| 129 | uint64_t flags) |
| 130 | { |
| 131 | TranslationBlock *tb, **ptb1; |
| 132 | unsigned int h; |
| 133 | target_ulong phys_pc, phys_page1, phys_page2, virt_page2; |
| 134 | |
| 135 | tb_invalidated_flag = 0; |
| 136 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 137 | /* find translated block using physical mappings */ |
| 138 | phys_pc = get_phys_addr_code(env, pc); |
| 139 | phys_page1 = phys_pc & TARGET_PAGE_MASK; |
| 140 | phys_page2 = -1; |
| 141 | h = tb_phys_hash_func(phys_pc); |
| 142 | ptb1 = &tb_phys_hash[h]; |
| 143 | for(;;) { |
| 144 | tb = *ptb1; |
| 145 | if (!tb) |
| 146 | goto not_found; |
| 147 | if (tb->pc == pc && |
| 148 | tb->page_addr[0] == phys_page1 && |
| 149 | tb->cs_base == cs_base && |
| 150 | tb->flags == flags) { |
| 151 | /* check next page if needed */ |
| 152 | if (tb->page_addr[1] != -1) { |
| 153 | virt_page2 = (pc & TARGET_PAGE_MASK) + |
| 154 | TARGET_PAGE_SIZE; |
| 155 | phys_page2 = get_phys_addr_code(env, virt_page2); |
| 156 | if (tb->page_addr[1] == phys_page2) |
| 157 | goto found; |
| 158 | } else { |
| 159 | goto found; |
| 160 | } |
| 161 | } |
| 162 | ptb1 = &tb->phys_hash_next; |
| 163 | } |
| 164 | not_found: |
| 165 | /* if no translated code available, then translate it now */ |
| 166 | tb = tb_gen_code(env, pc, cs_base, flags, 0); |
| 167 | |
| 168 | found: |
| 169 | /* we add the TB in the virtual pc hash table */ |
| 170 | env->tb_jmp_cache[tb_jmp_cache_hash_func(pc)] = tb; |
| 171 | return tb; |
| 172 | } |
| 173 | |
| 174 | static inline TranslationBlock *tb_find_fast(void) |
| 175 | { |
| 176 | TranslationBlock *tb; |
| 177 | target_ulong cs_base, pc; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 178 | int flags; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 179 | |
| 180 | /* we record a subset of the CPU state. It will |
| 181 | always be the same before a given translated block |
| 182 | is executed. */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 183 | cpu_get_tb_cpu_state(env, &pc, &cs_base, &flags); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 184 | tb = env->tb_jmp_cache[tb_jmp_cache_hash_func(pc)]; |
| 185 | if (unlikely(!tb || tb->pc != pc || tb->cs_base != cs_base || |
| 186 | tb->flags != flags)) { |
| 187 | tb = tb_find_slow(pc, cs_base, flags); |
| 188 | } |
| 189 | return tb; |
| 190 | } |
| 191 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 192 | static CPUDebugExcpHandler *debug_excp_handler; |
| 193 | |
| 194 | CPUDebugExcpHandler *cpu_set_debug_excp_handler(CPUDebugExcpHandler *handler) |
| 195 | { |
| 196 | CPUDebugExcpHandler *old_handler = debug_excp_handler; |
| 197 | |
| 198 | debug_excp_handler = handler; |
| 199 | return old_handler; |
| 200 | } |
| 201 | |
| 202 | static void cpu_handle_debug_exception(CPUState *env) |
| 203 | { |
| 204 | CPUWatchpoint *wp; |
| 205 | |
David 'Digit' Turner | 4276038 | 2011-05-11 01:48:19 +0200 | [diff] [blame] | 206 | if (!env->watchpoint_hit) { |
| 207 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 208 | wp->flags &= ~BP_WATCHPOINT_HIT; |
David 'Digit' Turner | 4276038 | 2011-05-11 01:48:19 +0200 | [diff] [blame] | 209 | } |
| 210 | } |
| 211 | if (debug_excp_handler) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 212 | debug_excp_handler(env); |
David 'Digit' Turner | 4276038 | 2011-05-11 01:48:19 +0200 | [diff] [blame] | 213 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 214 | } |
| 215 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 216 | /* main execution loop */ |
| 217 | |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 218 | volatile sig_atomic_t exit_request; |
| 219 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 220 | int cpu_exec(CPUState *env1) |
| 221 | { |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 222 | volatile host_reg_t saved_env_reg; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 223 | int ret, interrupt_request; |
| 224 | TranslationBlock *tb; |
| 225 | uint8_t *tc_ptr; |
| 226 | unsigned long next_tb; |
| 227 | |
| 228 | if (cpu_halted(env1) == EXCP_HALTED) |
| 229 | return EXCP_HALTED; |
| 230 | |
| 231 | cpu_single_env = env1; |
| 232 | |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 233 | /* the access to env below is actually saving the global register's |
| 234 | value, so that files not including target-xyz/exec.h are free to |
| 235 | use it. */ |
| 236 | QEMU_BUILD_BUG_ON (sizeof (saved_env_reg) != sizeof (env)); |
| 237 | saved_env_reg = (host_reg_t) env; |
| 238 | barrier(); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 239 | env = env1; |
| 240 | |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 241 | if (unlikely(exit_request)) { |
| 242 | env->exit_request = 1; |
| 243 | } |
| 244 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 245 | #if defined(TARGET_I386) |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 246 | if (!kvm_enabled()) { |
| 247 | /* put eflags in CPU temporary format */ |
| 248 | CC_SRC = env->eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); |
| 249 | DF = 1 - (2 * ((env->eflags >> 10) & 1)); |
| 250 | CC_OP = CC_OP_EFLAGS; |
| 251 | env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); |
| 252 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 253 | #elif defined(TARGET_SPARC) |
| 254 | #elif defined(TARGET_M68K) |
| 255 | env->cc_op = CC_OP_FLAGS; |
| 256 | env->cc_dest = env->sr & 0xf; |
| 257 | env->cc_x = (env->sr >> 4) & 1; |
| 258 | #elif defined(TARGET_ALPHA) |
| 259 | #elif defined(TARGET_ARM) |
David 'Digit' Turner | 4276038 | 2011-05-11 01:48:19 +0200 | [diff] [blame] | 260 | #elif defined(TARGET_UNICORE32) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 261 | #elif defined(TARGET_PPC) |
David 'Digit' Turner | 4276038 | 2011-05-11 01:48:19 +0200 | [diff] [blame] | 262 | #elif defined(TARGET_LM32) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 263 | #elif defined(TARGET_MICROBLAZE) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 264 | #elif defined(TARGET_MIPS) |
| 265 | #elif defined(TARGET_SH4) |
| 266 | #elif defined(TARGET_CRIS) |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 267 | #elif defined(TARGET_S390X) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 268 | /* XXXXX */ |
| 269 | #else |
| 270 | #error unsupported target CPU |
| 271 | #endif |
| 272 | env->exception_index = -1; |
| 273 | |
| 274 | /* prepare setjmp context for exception handling */ |
| 275 | for(;;) { |
| 276 | if (setjmp(env->jmp_env) == 0) { |
David 'Digit' Turner | 2c538c8 | 2010-05-10 16:48:20 -0700 | [diff] [blame] | 277 | #if defined(__sparc__) && !defined(CONFIG_SOLARIS) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 278 | #undef env |
| 279 | env = cpu_single_env; |
| 280 | #define env cpu_single_env |
| 281 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 282 | /* if an exception is pending, we execute it here */ |
| 283 | if (env->exception_index >= 0) { |
| 284 | if (env->exception_index >= EXCP_INTERRUPT) { |
| 285 | /* exit request from the cpu execution loop */ |
| 286 | ret = env->exception_index; |
David 'Digit' Turner | 4276038 | 2011-05-11 01:48:19 +0200 | [diff] [blame] | 287 | if (ret == EXCP_DEBUG) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 288 | cpu_handle_debug_exception(env); |
David 'Digit' Turner | 4276038 | 2011-05-11 01:48:19 +0200 | [diff] [blame] | 289 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 290 | break; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 291 | } else { |
| 292 | #if defined(CONFIG_USER_ONLY) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 293 | /* if user mode only, we simulate a fake exception |
| 294 | which will be handled outside the cpu execution |
| 295 | loop */ |
| 296 | #if defined(TARGET_I386) |
| 297 | do_interrupt_user(env->exception_index, |
| 298 | env->exception_is_int, |
| 299 | env->error_code, |
| 300 | env->exception_next_eip); |
| 301 | /* successfully delivered */ |
| 302 | env->old_exception = -1; |
| 303 | #endif |
| 304 | ret = env->exception_index; |
| 305 | break; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 306 | #else |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 307 | #if defined(TARGET_I386) |
| 308 | /* simulate a real cpu exception. On i386, it can |
| 309 | trigger new exceptions, but we do not handle |
| 310 | double or triple faults yet. */ |
| 311 | do_interrupt(env->exception_index, |
| 312 | env->exception_is_int, |
| 313 | env->error_code, |
| 314 | env->exception_next_eip, 0); |
| 315 | /* successfully delivered */ |
| 316 | env->old_exception = -1; |
| 317 | #elif defined(TARGET_PPC) |
| 318 | do_interrupt(env); |
David 'Digit' Turner | 4276038 | 2011-05-11 01:48:19 +0200 | [diff] [blame] | 319 | #elif defined(TARGET_LM32) |
| 320 | do_interrupt(env); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 321 | #elif defined(TARGET_MICROBLAZE) |
| 322 | do_interrupt(env); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 323 | #elif defined(TARGET_MIPS) |
| 324 | do_interrupt(env); |
| 325 | #elif defined(TARGET_SPARC) |
| 326 | do_interrupt(env); |
| 327 | #elif defined(TARGET_ARM) |
| 328 | do_interrupt(env); |
David 'Digit' Turner | 4276038 | 2011-05-11 01:48:19 +0200 | [diff] [blame] | 329 | #elif defined(TARGET_UNICORE32) |
| 330 | do_interrupt(env); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 331 | #elif defined(TARGET_SH4) |
| 332 | do_interrupt(env); |
| 333 | #elif defined(TARGET_ALPHA) |
| 334 | do_interrupt(env); |
| 335 | #elif defined(TARGET_CRIS) |
| 336 | do_interrupt(env); |
| 337 | #elif defined(TARGET_M68K) |
| 338 | do_interrupt(0); |
David 'Digit' Turner | 4276038 | 2011-05-11 01:48:19 +0200 | [diff] [blame] | 339 | #elif defined(TARGET_S390X) |
| 340 | do_interrupt(env); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 341 | #endif |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 342 | env->exception_index = -1; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 343 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 344 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 345 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 346 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 347 | if (kvm_enabled()) { |
| 348 | kvm_cpu_exec(env); |
| 349 | longjmp(env->jmp_env, 1); |
| 350 | } |
| 351 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 352 | next_tb = 0; /* force lookup of first TB */ |
| 353 | for(;;) { |
| 354 | interrupt_request = env->interrupt_request; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 355 | if (unlikely(interrupt_request)) { |
| 356 | if (unlikely(env->singlestep_enabled & SSTEP_NOIRQ)) { |
| 357 | /* Mask out external interrupts for this step. */ |
| 358 | interrupt_request &= ~(CPU_INTERRUPT_HARD | |
| 359 | CPU_INTERRUPT_FIQ | |
| 360 | CPU_INTERRUPT_SMI | |
| 361 | CPU_INTERRUPT_NMI); |
| 362 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 363 | if (interrupt_request & CPU_INTERRUPT_DEBUG) { |
| 364 | env->interrupt_request &= ~CPU_INTERRUPT_DEBUG; |
| 365 | env->exception_index = EXCP_DEBUG; |
| 366 | cpu_loop_exit(); |
| 367 | } |
| 368 | #if defined(TARGET_ARM) || defined(TARGET_SPARC) || defined(TARGET_MIPS) || \ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 369 | defined(TARGET_PPC) || defined(TARGET_ALPHA) || defined(TARGET_CRIS) || \ |
David 'Digit' Turner | 4276038 | 2011-05-11 01:48:19 +0200 | [diff] [blame] | 370 | defined(TARGET_MICROBLAZE) || defined(TARGET_LM32) || defined(TARGET_UNICORE32) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 371 | if (interrupt_request & CPU_INTERRUPT_HALT) { |
| 372 | env->interrupt_request &= ~CPU_INTERRUPT_HALT; |
| 373 | env->halted = 1; |
| 374 | env->exception_index = EXCP_HLT; |
| 375 | cpu_loop_exit(); |
| 376 | } |
| 377 | #endif |
| 378 | #if defined(TARGET_I386) |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 379 | if (interrupt_request & CPU_INTERRUPT_INIT) { |
| 380 | svm_check_intercept(SVM_EXIT_INIT); |
| 381 | do_cpu_init(env); |
| 382 | env->exception_index = EXCP_HALTED; |
| 383 | cpu_loop_exit(); |
| 384 | } else if (interrupt_request & CPU_INTERRUPT_SIPI) { |
| 385 | do_cpu_sipi(env); |
| 386 | } else if (env->hflags2 & HF2_GIF_MASK) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 387 | if ((interrupt_request & CPU_INTERRUPT_SMI) && |
| 388 | !(env->hflags & HF_SMM_MASK)) { |
| 389 | svm_check_intercept(SVM_EXIT_SMI); |
| 390 | env->interrupt_request &= ~CPU_INTERRUPT_SMI; |
| 391 | do_smm_enter(); |
| 392 | next_tb = 0; |
| 393 | } else if ((interrupt_request & CPU_INTERRUPT_NMI) && |
| 394 | !(env->hflags2 & HF2_NMI_MASK)) { |
| 395 | env->interrupt_request &= ~CPU_INTERRUPT_NMI; |
| 396 | env->hflags2 |= HF2_NMI_MASK; |
| 397 | do_interrupt(EXCP02_NMI, 0, 0, 0, 1); |
| 398 | next_tb = 0; |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 399 | } else if (interrupt_request & CPU_INTERRUPT_MCE) { |
| 400 | env->interrupt_request &= ~CPU_INTERRUPT_MCE; |
| 401 | do_interrupt(EXCP12_MCHK, 0, 0, 0, 0); |
| 402 | next_tb = 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 403 | } else if ((interrupt_request & CPU_INTERRUPT_HARD) && |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 404 | (((env->hflags2 & HF2_VINTR_MASK) && |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 405 | (env->hflags2 & HF2_HIF_MASK)) || |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 406 | (!(env->hflags2 & HF2_VINTR_MASK) && |
| 407 | (env->eflags & IF_MASK && |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 408 | !(env->hflags & HF_INHIBIT_IRQ_MASK))))) { |
| 409 | int intno; |
| 410 | svm_check_intercept(SVM_EXIT_INTR); |
| 411 | env->interrupt_request &= ~(CPU_INTERRUPT_HARD | CPU_INTERRUPT_VIRQ); |
| 412 | intno = cpu_get_pic_interrupt(env); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 413 | qemu_log_mask(CPU_LOG_TB_IN_ASM, "Servicing hardware INT=0x%02x\n", intno); |
David 'Digit' Turner | 2c538c8 | 2010-05-10 16:48:20 -0700 | [diff] [blame] | 414 | #if defined(__sparc__) && !defined(CONFIG_SOLARIS) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 415 | #undef env |
| 416 | env = cpu_single_env; |
| 417 | #define env cpu_single_env |
| 418 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 419 | do_interrupt(intno, 0, 0, 0, 1); |
| 420 | /* ensure that no TB jump will be modified as |
| 421 | the program flow was changed */ |
| 422 | next_tb = 0; |
| 423 | #if !defined(CONFIG_USER_ONLY) |
| 424 | } else if ((interrupt_request & CPU_INTERRUPT_VIRQ) && |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 425 | (env->eflags & IF_MASK) && |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 426 | !(env->hflags & HF_INHIBIT_IRQ_MASK)) { |
| 427 | int intno; |
| 428 | /* FIXME: this should respect TPR */ |
| 429 | svm_check_intercept(SVM_EXIT_VINTR); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 430 | intno = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_vector)); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 431 | qemu_log_mask(CPU_LOG_TB_IN_ASM, "Servicing virtual hardware INT=0x%02x\n", intno); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 432 | do_interrupt(intno, 0, 0, 0, 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 433 | env->interrupt_request &= ~CPU_INTERRUPT_VIRQ; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 434 | next_tb = 0; |
| 435 | #endif |
| 436 | } |
| 437 | } |
| 438 | #elif defined(TARGET_PPC) |
| 439 | #if 0 |
| 440 | if ((interrupt_request & CPU_INTERRUPT_RESET)) { |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 441 | cpu_reset(env); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 442 | } |
| 443 | #endif |
| 444 | if (interrupt_request & CPU_INTERRUPT_HARD) { |
| 445 | ppc_hw_interrupt(env); |
| 446 | if (env->pending_interrupts == 0) |
| 447 | env->interrupt_request &= ~CPU_INTERRUPT_HARD; |
| 448 | next_tb = 0; |
| 449 | } |
David 'Digit' Turner | 4276038 | 2011-05-11 01:48:19 +0200 | [diff] [blame] | 450 | #elif defined(TARGET_LM32) |
| 451 | if ((interrupt_request & CPU_INTERRUPT_HARD) |
| 452 | && (env->ie & IE_IE)) { |
| 453 | env->exception_index = EXCP_IRQ; |
| 454 | do_interrupt(env); |
| 455 | next_tb = 0; |
| 456 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 457 | #elif defined(TARGET_MICROBLAZE) |
| 458 | if ((interrupt_request & CPU_INTERRUPT_HARD) |
| 459 | && (env->sregs[SR_MSR] & MSR_IE) |
| 460 | && !(env->sregs[SR_MSR] & (MSR_EIP | MSR_BIP)) |
| 461 | && !(env->iflags & (D_FLAG | IMM_FLAG))) { |
| 462 | env->exception_index = EXCP_IRQ; |
| 463 | do_interrupt(env); |
| 464 | next_tb = 0; |
| 465 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 466 | #elif defined(TARGET_MIPS) |
| 467 | if ((interrupt_request & CPU_INTERRUPT_HARD) && |
David 'Digit' Turner | 4276038 | 2011-05-11 01:48:19 +0200 | [diff] [blame] | 468 | cpu_mips_hw_interrupts_pending(env)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 469 | /* Raise it */ |
| 470 | env->exception_index = EXCP_EXT_INTERRUPT; |
| 471 | env->error_code = 0; |
| 472 | do_interrupt(env); |
| 473 | next_tb = 0; |
| 474 | } |
| 475 | #elif defined(TARGET_SPARC) |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 476 | if (interrupt_request & CPU_INTERRUPT_HARD) { |
| 477 | if (cpu_interrupts_enabled(env) && |
| 478 | env->interrupt_index > 0) { |
| 479 | int pil = env->interrupt_index & 0xf; |
| 480 | int type = env->interrupt_index & 0xf0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 481 | |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 482 | if (((type == TT_EXTINT) && |
| 483 | cpu_pil_allowed(env, pil)) || |
| 484 | type != TT_EXTINT) { |
| 485 | env->exception_index = env->interrupt_index; |
| 486 | do_interrupt(env); |
| 487 | next_tb = 0; |
| 488 | } |
| 489 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 490 | } |
| 491 | #elif defined(TARGET_ARM) |
| 492 | if (interrupt_request & CPU_INTERRUPT_FIQ |
| 493 | && !(env->uncached_cpsr & CPSR_F)) { |
| 494 | env->exception_index = EXCP_FIQ; |
| 495 | do_interrupt(env); |
| 496 | next_tb = 0; |
| 497 | } |
| 498 | /* ARMv7-M interrupt return works by loading a magic value |
| 499 | into the PC. On real hardware the load causes the |
| 500 | return to occur. The qemu implementation performs the |
| 501 | jump normally, then does the exception return when the |
| 502 | CPU tries to execute code at the magic address. |
| 503 | This will cause the magic PC value to be pushed to |
| 504 | the stack if an interrupt occured at the wrong time. |
| 505 | We avoid this by disabling interrupts when |
| 506 | pc contains a magic address. */ |
| 507 | if (interrupt_request & CPU_INTERRUPT_HARD |
| 508 | && ((IS_M(env) && env->regs[15] < 0xfffffff0) |
| 509 | || !(env->uncached_cpsr & CPSR_I))) { |
| 510 | env->exception_index = EXCP_IRQ; |
| 511 | do_interrupt(env); |
| 512 | next_tb = 0; |
| 513 | } |
David 'Digit' Turner | 4276038 | 2011-05-11 01:48:19 +0200 | [diff] [blame] | 514 | #elif defined(TARGET_UNICORE32) |
| 515 | if (interrupt_request & CPU_INTERRUPT_HARD |
| 516 | && !(env->uncached_asr & ASR_I)) { |
| 517 | do_interrupt(env); |
| 518 | next_tb = 0; |
| 519 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 520 | #elif defined(TARGET_SH4) |
| 521 | if (interrupt_request & CPU_INTERRUPT_HARD) { |
| 522 | do_interrupt(env); |
| 523 | next_tb = 0; |
| 524 | } |
| 525 | #elif defined(TARGET_ALPHA) |
| 526 | if (interrupt_request & CPU_INTERRUPT_HARD) { |
| 527 | do_interrupt(env); |
| 528 | next_tb = 0; |
| 529 | } |
| 530 | #elif defined(TARGET_CRIS) |
| 531 | if (interrupt_request & CPU_INTERRUPT_HARD |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 532 | && (env->pregs[PR_CCS] & I_FLAG) |
| 533 | && !env->locked_irq) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 534 | env->exception_index = EXCP_IRQ; |
| 535 | do_interrupt(env); |
| 536 | next_tb = 0; |
| 537 | } |
| 538 | if (interrupt_request & CPU_INTERRUPT_NMI |
| 539 | && (env->pregs[PR_CCS] & M_FLAG)) { |
| 540 | env->exception_index = EXCP_NMI; |
| 541 | do_interrupt(env); |
| 542 | next_tb = 0; |
| 543 | } |
| 544 | #elif defined(TARGET_M68K) |
| 545 | if (interrupt_request & CPU_INTERRUPT_HARD |
| 546 | && ((env->sr & SR_I) >> SR_I_SHIFT) |
| 547 | < env->pending_level) { |
| 548 | /* Real hardware gets the interrupt vector via an |
| 549 | IACK cycle at this point. Current emulated |
| 550 | hardware doesn't rely on this, so we |
| 551 | provide/save the vector when the interrupt is |
| 552 | first signalled. */ |
| 553 | env->exception_index = env->pending_vector; |
| 554 | do_interrupt(1); |
| 555 | next_tb = 0; |
| 556 | } |
David 'Digit' Turner | 4276038 | 2011-05-11 01:48:19 +0200 | [diff] [blame] | 557 | #elif defined(TARGET_S390X) && !defined(CONFIG_USER_ONLY) |
| 558 | if ((interrupt_request & CPU_INTERRUPT_HARD) && |
| 559 | (env->psw.mask & PSW_MASK_EXT)) { |
| 560 | do_interrupt(env); |
| 561 | next_tb = 0; |
| 562 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 563 | #endif |
| 564 | /* Don't use the cached interupt_request value, |
| 565 | do_interrupt may have updated the EXITTB flag. */ |
| 566 | if (env->interrupt_request & CPU_INTERRUPT_EXITTB) { |
| 567 | env->interrupt_request &= ~CPU_INTERRUPT_EXITTB; |
| 568 | /* ensure that no TB jump will be modified as |
| 569 | the program flow was changed */ |
| 570 | next_tb = 0; |
| 571 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 572 | } |
| 573 | if (unlikely(env->exit_request)) { |
| 574 | env->exit_request = 0; |
| 575 | env->exception_index = EXCP_INTERRUPT; |
| 576 | cpu_loop_exit(); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 577 | } |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 578 | #if defined(DEBUG_DISAS) || defined(CONFIG_DEBUG_EXEC) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 579 | if (qemu_loglevel_mask(CPU_LOG_TB_CPU)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 580 | /* restore flags in standard format */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 581 | #if defined(TARGET_I386) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 582 | env->eflags = env->eflags | helper_cc_compute_all(CC_OP) | (DF & DF_MASK); |
| 583 | log_cpu_state(env, X86_DUMP_CCOP); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 584 | env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 585 | #elif defined(TARGET_M68K) |
| 586 | cpu_m68k_flush_flags(env, env->cc_op); |
| 587 | env->cc_op = CC_OP_FLAGS; |
| 588 | env->sr = (env->sr & 0xffe0) |
| 589 | | env->cc_dest | (env->cc_x << 4); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 590 | log_cpu_state(env, 0); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 591 | #else |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 592 | log_cpu_state(env, 0); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 593 | #endif |
| 594 | } |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 595 | #endif /* DEBUG_DISAS || CONFIG_DEBUG_EXEC */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 596 | spin_lock(&tb_lock); |
| 597 | tb = tb_find_fast(); |
| 598 | /* Note: we do it here to avoid a gcc bug on Mac OS X when |
| 599 | doing it in tb_find_slow */ |
| 600 | if (tb_invalidated_flag) { |
| 601 | /* as some TB could have been invalidated because |
| 602 | of memory exceptions while generating the code, we |
| 603 | must recompute the hash index here */ |
| 604 | next_tb = 0; |
| 605 | tb_invalidated_flag = 0; |
| 606 | } |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 607 | #ifdef CONFIG_DEBUG_EXEC |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 608 | qemu_log_mask(CPU_LOG_EXEC, "Trace 0x%08lx [" TARGET_FMT_lx "] %s\n", |
| 609 | (long)tb->tc_ptr, tb->pc, |
| 610 | lookup_symbol(tb->pc)); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 611 | #endif |
| 612 | /* see if we can patch the calling TB. When the TB |
| 613 | spans two pages, we cannot safely do a direct |
| 614 | jump. */ |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 615 | if (next_tb != 0 && tb->page_addr[1] == -1) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 616 | tb_add_jump((TranslationBlock *)(next_tb & ~3), next_tb & 3, tb); |
| 617 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 618 | spin_unlock(&tb_lock); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 619 | |
| 620 | /* cpu_interrupt might be called while translating the |
| 621 | TB, but before it is linked into a potentially |
| 622 | infinite loop and becomes env->current_tb. Avoid |
| 623 | starting execution if there is a pending interrupt. */ |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 624 | env->current_tb = tb; |
| 625 | barrier(); |
| 626 | if (likely(!env->exit_request)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 627 | tc_ptr = tb->tc_ptr; |
| 628 | /* execute the generated code */ |
David 'Digit' Turner | 2c538c8 | 2010-05-10 16:48:20 -0700 | [diff] [blame] | 629 | #if defined(__sparc__) && !defined(CONFIG_SOLARIS) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 630 | #undef env |
| 631 | env = cpu_single_env; |
| 632 | #define env cpu_single_env |
| 633 | #endif |
| 634 | next_tb = tcg_qemu_tb_exec(tc_ptr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 635 | if ((next_tb & 3) == 2) { |
| 636 | /* Instruction counter expired. */ |
| 637 | int insns_left; |
| 638 | tb = (TranslationBlock *)(long)(next_tb & ~3); |
| 639 | /* Restore PC. */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 640 | cpu_pc_from_tb(env, tb); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 641 | insns_left = env->icount_decr.u32; |
| 642 | if (env->icount_extra && insns_left >= 0) { |
| 643 | /* Refill decrementer and continue execution. */ |
| 644 | env->icount_extra += insns_left; |
| 645 | if (env->icount_extra > 0xffff) { |
| 646 | insns_left = 0xffff; |
| 647 | } else { |
| 648 | insns_left = env->icount_extra; |
| 649 | } |
| 650 | env->icount_extra -= insns_left; |
| 651 | env->icount_decr.u16.low = insns_left; |
| 652 | } else { |
| 653 | if (insns_left > 0) { |
| 654 | /* Execute remaining instructions. */ |
| 655 | cpu_exec_nocache(insns_left, tb); |
| 656 | } |
| 657 | env->exception_index = EXCP_INTERRUPT; |
| 658 | next_tb = 0; |
| 659 | cpu_loop_exit(); |
| 660 | } |
| 661 | } |
| 662 | } |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 663 | env->current_tb = NULL; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 664 | /* reset soft MMU for next block (it can currently |
| 665 | only be set by a memory fault) */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 666 | } /* for(;;) */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 667 | } |
| 668 | } /* for(;;) */ |
| 669 | |
| 670 | |
| 671 | #if defined(TARGET_I386) |
| 672 | /* restore flags in standard format */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 673 | env->eflags = env->eflags | helper_cc_compute_all(CC_OP) | (DF & DF_MASK); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 674 | #elif defined(TARGET_ARM) |
| 675 | /* XXX: Save/restore host fpu exception state?. */ |
David 'Digit' Turner | 4276038 | 2011-05-11 01:48:19 +0200 | [diff] [blame] | 676 | #elif defined(TARGET_UNICORE32) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 677 | #elif defined(TARGET_SPARC) |
| 678 | #elif defined(TARGET_PPC) |
David 'Digit' Turner | 4276038 | 2011-05-11 01:48:19 +0200 | [diff] [blame] | 679 | #elif defined(TARGET_LM32) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 680 | #elif defined(TARGET_M68K) |
| 681 | cpu_m68k_flush_flags(env, env->cc_op); |
| 682 | env->cc_op = CC_OP_FLAGS; |
| 683 | env->sr = (env->sr & 0xffe0) |
| 684 | | env->cc_dest | (env->cc_x << 4); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 685 | #elif defined(TARGET_MICROBLAZE) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 686 | #elif defined(TARGET_MIPS) |
| 687 | #elif defined(TARGET_SH4) |
| 688 | #elif defined(TARGET_ALPHA) |
| 689 | #elif defined(TARGET_CRIS) |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 690 | #elif defined(TARGET_S390X) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 691 | /* XXXXX */ |
| 692 | #else |
| 693 | #error unsupported target CPU |
| 694 | #endif |
| 695 | |
| 696 | /* restore global registers */ |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 697 | barrier(); |
| 698 | env = (void *) saved_env_reg; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 699 | |
| 700 | /* fail safe : never use cpu_single_env outside cpu_exec() */ |
| 701 | cpu_single_env = NULL; |
| 702 | return ret; |
| 703 | } |
| 704 | |
| 705 | /* must only be called from the generated code as an exception can be |
| 706 | generated */ |
| 707 | void tb_invalidate_page_range(target_ulong start, target_ulong end) |
| 708 | { |
| 709 | /* XXX: cannot enable it yet because it yields to MMU exception |
| 710 | where NIP != read address on PowerPC */ |
| 711 | #if 0 |
| 712 | target_ulong phys_addr; |
| 713 | phys_addr = get_phys_addr_code(env, start); |
| 714 | tb_invalidate_phys_page_range(phys_addr, phys_addr + end - start, 0); |
| 715 | #endif |
| 716 | } |
| 717 | |
| 718 | #if defined(TARGET_I386) && defined(CONFIG_USER_ONLY) |
| 719 | |
| 720 | void cpu_x86_load_seg(CPUX86State *s, int seg_reg, int selector) |
| 721 | { |
| 722 | CPUX86State *saved_env; |
| 723 | |
| 724 | saved_env = env; |
| 725 | env = s; |
| 726 | if (!(env->cr[0] & CR0_PE_MASK) || (env->eflags & VM_MASK)) { |
| 727 | selector &= 0xffff; |
| 728 | cpu_x86_load_seg_cache(env, seg_reg, selector, |
| 729 | (selector << 4), 0xffff, 0); |
| 730 | } else { |
| 731 | helper_load_seg(seg_reg, selector); |
| 732 | } |
| 733 | env = saved_env; |
| 734 | } |
| 735 | |
| 736 | void cpu_x86_fsave(CPUX86State *s, target_ulong ptr, int data32) |
| 737 | { |
| 738 | CPUX86State *saved_env; |
| 739 | |
| 740 | saved_env = env; |
| 741 | env = s; |
| 742 | |
| 743 | helper_fsave(ptr, data32); |
| 744 | |
| 745 | env = saved_env; |
| 746 | } |
| 747 | |
| 748 | void cpu_x86_frstor(CPUX86State *s, target_ulong ptr, int data32) |
| 749 | { |
| 750 | CPUX86State *saved_env; |
| 751 | |
| 752 | saved_env = env; |
| 753 | env = s; |
| 754 | |
| 755 | helper_frstor(ptr, data32); |
| 756 | |
| 757 | env = saved_env; |
| 758 | } |
| 759 | |
| 760 | #endif /* TARGET_I386 */ |
| 761 | |
| 762 | #if !defined(CONFIG_SOFTMMU) |
| 763 | |
| 764 | #if defined(TARGET_I386) |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 765 | #define EXCEPTION_ACTION raise_exception_err(env->exception_index, env->error_code) |
| 766 | #else |
| 767 | #define EXCEPTION_ACTION cpu_loop_exit() |
| 768 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 769 | |
| 770 | /* 'pc' is the host PC at which the exception was raised. 'address' is |
| 771 | the effective address of the memory exception. 'is_write' is 1 if a |
| 772 | write caused the exception and otherwise 0'. 'old_set' is the |
| 773 | signal set which should be restored */ |
| 774 | static inline int handle_cpu_signal(unsigned long pc, unsigned long address, |
| 775 | int is_write, sigset_t *old_set, |
| 776 | void *puc) |
| 777 | { |
| 778 | TranslationBlock *tb; |
| 779 | int ret; |
| 780 | |
| 781 | if (cpu_single_env) |
| 782 | env = cpu_single_env; /* XXX: find a correct solution for multithread */ |
| 783 | #if defined(DEBUG_SIGNAL) |
| 784 | qemu_printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n", |
| 785 | pc, address, is_write, *(unsigned long *)old_set); |
| 786 | #endif |
| 787 | /* XXX: locking issue */ |
| 788 | if (is_write && page_unprotect(h2g(address), pc, puc)) { |
| 789 | return 1; |
| 790 | } |
| 791 | |
| 792 | /* see if it is an MMU fault */ |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 793 | ret = cpu_handle_mmu_fault(env, address, is_write, MMU_USER_IDX, 0); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 794 | if (ret < 0) |
| 795 | return 0; /* not an MMU fault */ |
| 796 | if (ret == 0) |
| 797 | return 1; /* the MMU fault was handled without causing real CPU fault */ |
| 798 | /* now we have a real cpu fault */ |
| 799 | tb = tb_find_pc(pc); |
| 800 | if (tb) { |
| 801 | /* the PC is inside the translated code. It means that we have |
| 802 | a virtual CPU fault */ |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 803 | cpu_restore_state(tb, env, pc); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 804 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 805 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 806 | /* we restore the process signal mask as the sigreturn should |
| 807 | do it (XXX: use sigsetjmp) */ |
| 808 | sigprocmask(SIG_SETMASK, old_set, NULL); |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 809 | EXCEPTION_ACTION; |
| 810 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 811 | /* never comes here */ |
| 812 | return 1; |
| 813 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 814 | |
| 815 | #if defined(__i386__) |
| 816 | |
| 817 | #if defined(__APPLE__) |
| 818 | # include <sys/ucontext.h> |
| 819 | |
| 820 | # define EIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext->ss.eip)) |
| 821 | # define TRAP_sig(context) ((context)->uc_mcontext->es.trapno) |
| 822 | # define ERROR_sig(context) ((context)->uc_mcontext->es.err) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 823 | # define MASK_sig(context) ((context)->uc_sigmask) |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 824 | #elif defined (__NetBSD__) |
| 825 | # include <ucontext.h> |
| 826 | |
| 827 | # define EIP_sig(context) ((context)->uc_mcontext.__gregs[_REG_EIP]) |
| 828 | # define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO]) |
| 829 | # define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR]) |
| 830 | # define MASK_sig(context) ((context)->uc_sigmask) |
| 831 | #elif defined (__FreeBSD__) || defined(__DragonFly__) |
| 832 | # include <ucontext.h> |
| 833 | |
| 834 | # define EIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.mc_eip)) |
| 835 | # define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno) |
| 836 | # define ERROR_sig(context) ((context)->uc_mcontext.mc_err) |
| 837 | # define MASK_sig(context) ((context)->uc_sigmask) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 838 | #elif defined(__OpenBSD__) |
| 839 | # define EIP_sig(context) ((context)->sc_eip) |
| 840 | # define TRAP_sig(context) ((context)->sc_trapno) |
| 841 | # define ERROR_sig(context) ((context)->sc_err) |
| 842 | # define MASK_sig(context) ((context)->sc_mask) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 843 | #else |
| 844 | # define EIP_sig(context) ((context)->uc_mcontext.gregs[REG_EIP]) |
| 845 | # define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO]) |
| 846 | # define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR]) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 847 | # define MASK_sig(context) ((context)->uc_sigmask) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 848 | #endif |
| 849 | |
| 850 | int cpu_signal_handler(int host_signum, void *pinfo, |
| 851 | void *puc) |
| 852 | { |
| 853 | siginfo_t *info = pinfo; |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 854 | #if defined(__NetBSD__) || defined (__FreeBSD__) || defined(__DragonFly__) |
| 855 | ucontext_t *uc = puc; |
| 856 | #elif defined(__OpenBSD__) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 857 | struct sigcontext *uc = puc; |
| 858 | #else |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 859 | struct ucontext *uc = puc; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 860 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 861 | unsigned long pc; |
| 862 | int trapno; |
| 863 | |
| 864 | #ifndef REG_EIP |
| 865 | /* for glibc 2.1 */ |
| 866 | #define REG_EIP EIP |
| 867 | #define REG_ERR ERR |
| 868 | #define REG_TRAPNO TRAPNO |
| 869 | #endif |
| 870 | pc = EIP_sig(uc); |
| 871 | trapno = TRAP_sig(uc); |
| 872 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
| 873 | trapno == 0xe ? |
| 874 | (ERROR_sig(uc) >> 1) & 1 : 0, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 875 | &MASK_sig(uc), puc); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 876 | } |
| 877 | |
| 878 | #elif defined(__x86_64__) |
| 879 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 880 | #ifdef __NetBSD__ |
| 881 | #define PC_sig(context) _UC_MACHINE_PC(context) |
| 882 | #define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO]) |
| 883 | #define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR]) |
| 884 | #define MASK_sig(context) ((context)->uc_sigmask) |
| 885 | #elif defined(__OpenBSD__) |
| 886 | #define PC_sig(context) ((context)->sc_rip) |
| 887 | #define TRAP_sig(context) ((context)->sc_trapno) |
| 888 | #define ERROR_sig(context) ((context)->sc_err) |
| 889 | #define MASK_sig(context) ((context)->sc_mask) |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 890 | #elif defined (__FreeBSD__) || defined(__DragonFly__) |
| 891 | #include <ucontext.h> |
| 892 | |
| 893 | #define PC_sig(context) (*((unsigned long*)&(context)->uc_mcontext.mc_rip)) |
| 894 | #define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno) |
| 895 | #define ERROR_sig(context) ((context)->uc_mcontext.mc_err) |
| 896 | #define MASK_sig(context) ((context)->uc_sigmask) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 897 | #else |
| 898 | #define PC_sig(context) ((context)->uc_mcontext.gregs[REG_RIP]) |
| 899 | #define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO]) |
| 900 | #define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR]) |
| 901 | #define MASK_sig(context) ((context)->uc_sigmask) |
| 902 | #endif |
| 903 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 904 | int cpu_signal_handler(int host_signum, void *pinfo, |
| 905 | void *puc) |
| 906 | { |
| 907 | siginfo_t *info = pinfo; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 908 | unsigned long pc; |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 909 | #if defined(__NetBSD__) || defined (__FreeBSD__) || defined(__DragonFly__) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 910 | ucontext_t *uc = puc; |
| 911 | #elif defined(__OpenBSD__) |
| 912 | struct sigcontext *uc = puc; |
| 913 | #else |
| 914 | struct ucontext *uc = puc; |
| 915 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 916 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 917 | pc = PC_sig(uc); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 918 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 919 | TRAP_sig(uc) == 0xe ? |
| 920 | (ERROR_sig(uc) >> 1) & 1 : 0, |
| 921 | &MASK_sig(uc), puc); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 922 | } |
| 923 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 924 | #elif defined(_ARCH_PPC) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 925 | |
| 926 | /*********************************************************************** |
| 927 | * signal context platform-specific definitions |
| 928 | * From Wine |
| 929 | */ |
| 930 | #ifdef linux |
| 931 | /* All Registers access - only for local access */ |
| 932 | # define REG_sig(reg_name, context) ((context)->uc_mcontext.regs->reg_name) |
| 933 | /* Gpr Registers access */ |
| 934 | # define GPR_sig(reg_num, context) REG_sig(gpr[reg_num], context) |
| 935 | # define IAR_sig(context) REG_sig(nip, context) /* Program counter */ |
| 936 | # define MSR_sig(context) REG_sig(msr, context) /* Machine State Register (Supervisor) */ |
| 937 | # define CTR_sig(context) REG_sig(ctr, context) /* Count register */ |
| 938 | # define XER_sig(context) REG_sig(xer, context) /* User's integer exception register */ |
| 939 | # define LR_sig(context) REG_sig(link, context) /* Link register */ |
| 940 | # define CR_sig(context) REG_sig(ccr, context) /* Condition register */ |
| 941 | /* Float Registers access */ |
| 942 | # define FLOAT_sig(reg_num, context) (((double*)((char*)((context)->uc_mcontext.regs+48*4)))[reg_num]) |
| 943 | # define FPSCR_sig(context) (*(int*)((char*)((context)->uc_mcontext.regs+(48+32*2)*4))) |
| 944 | /* Exception Registers access */ |
| 945 | # define DAR_sig(context) REG_sig(dar, context) |
| 946 | # define DSISR_sig(context) REG_sig(dsisr, context) |
| 947 | # define TRAP_sig(context) REG_sig(trap, context) |
| 948 | #endif /* linux */ |
| 949 | |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 950 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
| 951 | #include <ucontext.h> |
| 952 | # define IAR_sig(context) ((context)->uc_mcontext.mc_srr0) |
| 953 | # define MSR_sig(context) ((context)->uc_mcontext.mc_srr1) |
| 954 | # define CTR_sig(context) ((context)->uc_mcontext.mc_ctr) |
| 955 | # define XER_sig(context) ((context)->uc_mcontext.mc_xer) |
| 956 | # define LR_sig(context) ((context)->uc_mcontext.mc_lr) |
| 957 | # define CR_sig(context) ((context)->uc_mcontext.mc_cr) |
| 958 | /* Exception Registers access */ |
| 959 | # define DAR_sig(context) ((context)->uc_mcontext.mc_dar) |
| 960 | # define DSISR_sig(context) ((context)->uc_mcontext.mc_dsisr) |
| 961 | # define TRAP_sig(context) ((context)->uc_mcontext.mc_exc) |
| 962 | #endif /* __FreeBSD__|| __FreeBSD_kernel__ */ |
| 963 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 964 | #ifdef __APPLE__ |
| 965 | # include <sys/ucontext.h> |
| 966 | typedef struct ucontext SIGCONTEXT; |
| 967 | /* All Registers access - only for local access */ |
| 968 | # define REG_sig(reg_name, context) ((context)->uc_mcontext->ss.reg_name) |
| 969 | # define FLOATREG_sig(reg_name, context) ((context)->uc_mcontext->fs.reg_name) |
| 970 | # define EXCEPREG_sig(reg_name, context) ((context)->uc_mcontext->es.reg_name) |
| 971 | # define VECREG_sig(reg_name, context) ((context)->uc_mcontext->vs.reg_name) |
| 972 | /* Gpr Registers access */ |
| 973 | # define GPR_sig(reg_num, context) REG_sig(r##reg_num, context) |
| 974 | # define IAR_sig(context) REG_sig(srr0, context) /* Program counter */ |
| 975 | # define MSR_sig(context) REG_sig(srr1, context) /* Machine State Register (Supervisor) */ |
| 976 | # define CTR_sig(context) REG_sig(ctr, context) |
| 977 | # define XER_sig(context) REG_sig(xer, context) /* Link register */ |
| 978 | # define LR_sig(context) REG_sig(lr, context) /* User's integer exception register */ |
| 979 | # define CR_sig(context) REG_sig(cr, context) /* Condition register */ |
| 980 | /* Float Registers access */ |
| 981 | # define FLOAT_sig(reg_num, context) FLOATREG_sig(fpregs[reg_num], context) |
| 982 | # define FPSCR_sig(context) ((double)FLOATREG_sig(fpscr, context)) |
| 983 | /* Exception Registers access */ |
| 984 | # define DAR_sig(context) EXCEPREG_sig(dar, context) /* Fault registers for coredump */ |
| 985 | # define DSISR_sig(context) EXCEPREG_sig(dsisr, context) |
| 986 | # define TRAP_sig(context) EXCEPREG_sig(exception, context) /* number of powerpc exception taken */ |
| 987 | #endif /* __APPLE__ */ |
| 988 | |
| 989 | int cpu_signal_handler(int host_signum, void *pinfo, |
| 990 | void *puc) |
| 991 | { |
| 992 | siginfo_t *info = pinfo; |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 993 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
| 994 | ucontext_t *uc = puc; |
| 995 | #else |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 996 | struct ucontext *uc = puc; |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 997 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 998 | unsigned long pc; |
| 999 | int is_write; |
| 1000 | |
| 1001 | pc = IAR_sig(uc); |
| 1002 | is_write = 0; |
| 1003 | #if 0 |
| 1004 | /* ppc 4xx case */ |
| 1005 | if (DSISR_sig(uc) & 0x00800000) |
| 1006 | is_write = 1; |
| 1007 | #else |
| 1008 | if (TRAP_sig(uc) != 0x400 && (DSISR_sig(uc) & 0x02000000)) |
| 1009 | is_write = 1; |
| 1010 | #endif |
| 1011 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
| 1012 | is_write, &uc->uc_sigmask, puc); |
| 1013 | } |
| 1014 | |
| 1015 | #elif defined(__alpha__) |
| 1016 | |
| 1017 | int cpu_signal_handler(int host_signum, void *pinfo, |
| 1018 | void *puc) |
| 1019 | { |
| 1020 | siginfo_t *info = pinfo; |
| 1021 | struct ucontext *uc = puc; |
| 1022 | uint32_t *pc = uc->uc_mcontext.sc_pc; |
| 1023 | uint32_t insn = *pc; |
| 1024 | int is_write = 0; |
| 1025 | |
| 1026 | /* XXX: need kernel patch to get write flag faster */ |
| 1027 | switch (insn >> 26) { |
| 1028 | case 0x0d: // stw |
| 1029 | case 0x0e: // stb |
| 1030 | case 0x0f: // stq_u |
| 1031 | case 0x24: // stf |
| 1032 | case 0x25: // stg |
| 1033 | case 0x26: // sts |
| 1034 | case 0x27: // stt |
| 1035 | case 0x2c: // stl |
| 1036 | case 0x2d: // stq |
| 1037 | case 0x2e: // stl_c |
| 1038 | case 0x2f: // stq_c |
| 1039 | is_write = 1; |
| 1040 | } |
| 1041 | |
| 1042 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
| 1043 | is_write, &uc->uc_sigmask, puc); |
| 1044 | } |
| 1045 | #elif defined(__sparc__) |
| 1046 | |
| 1047 | int cpu_signal_handler(int host_signum, void *pinfo, |
| 1048 | void *puc) |
| 1049 | { |
| 1050 | siginfo_t *info = pinfo; |
| 1051 | int is_write; |
| 1052 | uint32_t insn; |
David 'Digit' Turner | 2c538c8 | 2010-05-10 16:48:20 -0700 | [diff] [blame] | 1053 | #if !defined(__arch64__) || defined(CONFIG_SOLARIS) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1054 | uint32_t *regs = (uint32_t *)(info + 1); |
| 1055 | void *sigmask = (regs + 20); |
| 1056 | /* XXX: is there a standard glibc define ? */ |
| 1057 | unsigned long pc = regs[1]; |
| 1058 | #else |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1059 | #ifdef __linux__ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1060 | struct sigcontext *sc = puc; |
| 1061 | unsigned long pc = sc->sigc_regs.tpc; |
| 1062 | void *sigmask = (void *)sc->sigc_mask; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1063 | #elif defined(__OpenBSD__) |
| 1064 | struct sigcontext *uc = puc; |
| 1065 | unsigned long pc = uc->sc_pc; |
| 1066 | void *sigmask = (void *)(long)uc->sc_mask; |
| 1067 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1068 | #endif |
| 1069 | |
| 1070 | /* XXX: need kernel patch to get write flag faster */ |
| 1071 | is_write = 0; |
| 1072 | insn = *(uint32_t *)pc; |
| 1073 | if ((insn >> 30) == 3) { |
| 1074 | switch((insn >> 19) & 0x3f) { |
| 1075 | case 0x05: // stb |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1076 | case 0x15: // stba |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1077 | case 0x06: // sth |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1078 | case 0x16: // stha |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1079 | case 0x04: // st |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1080 | case 0x14: // sta |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1081 | case 0x07: // std |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1082 | case 0x17: // stda |
| 1083 | case 0x0e: // stx |
| 1084 | case 0x1e: // stxa |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1085 | case 0x24: // stf |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1086 | case 0x34: // stfa |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1087 | case 0x27: // stdf |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1088 | case 0x37: // stdfa |
| 1089 | case 0x26: // stqf |
| 1090 | case 0x36: // stqfa |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1091 | case 0x25: // stfsr |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1092 | case 0x3c: // casa |
| 1093 | case 0x3e: // casxa |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1094 | is_write = 1; |
| 1095 | break; |
| 1096 | } |
| 1097 | } |
| 1098 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
| 1099 | is_write, sigmask, NULL); |
| 1100 | } |
| 1101 | |
| 1102 | #elif defined(__arm__) |
| 1103 | |
| 1104 | int cpu_signal_handler(int host_signum, void *pinfo, |
| 1105 | void *puc) |
| 1106 | { |
| 1107 | siginfo_t *info = pinfo; |
| 1108 | struct ucontext *uc = puc; |
| 1109 | unsigned long pc; |
| 1110 | int is_write; |
| 1111 | |
| 1112 | #if (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 3)) |
| 1113 | pc = uc->uc_mcontext.gregs[R15]; |
| 1114 | #else |
| 1115 | pc = uc->uc_mcontext.arm_pc; |
| 1116 | #endif |
| 1117 | /* XXX: compute is_write */ |
| 1118 | is_write = 0; |
| 1119 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
| 1120 | is_write, |
| 1121 | &uc->uc_sigmask, puc); |
| 1122 | } |
| 1123 | |
| 1124 | #elif defined(__mc68000) |
| 1125 | |
| 1126 | int cpu_signal_handler(int host_signum, void *pinfo, |
| 1127 | void *puc) |
| 1128 | { |
| 1129 | siginfo_t *info = pinfo; |
| 1130 | struct ucontext *uc = puc; |
| 1131 | unsigned long pc; |
| 1132 | int is_write; |
| 1133 | |
| 1134 | pc = uc->uc_mcontext.gregs[16]; |
| 1135 | /* XXX: compute is_write */ |
| 1136 | is_write = 0; |
| 1137 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
| 1138 | is_write, |
| 1139 | &uc->uc_sigmask, puc); |
| 1140 | } |
| 1141 | |
| 1142 | #elif defined(__ia64) |
| 1143 | |
| 1144 | #ifndef __ISR_VALID |
| 1145 | /* This ought to be in <bits/siginfo.h>... */ |
| 1146 | # define __ISR_VALID 1 |
| 1147 | #endif |
| 1148 | |
| 1149 | int cpu_signal_handler(int host_signum, void *pinfo, void *puc) |
| 1150 | { |
| 1151 | siginfo_t *info = pinfo; |
| 1152 | struct ucontext *uc = puc; |
| 1153 | unsigned long ip; |
| 1154 | int is_write = 0; |
| 1155 | |
| 1156 | ip = uc->uc_mcontext.sc_ip; |
| 1157 | switch (host_signum) { |
| 1158 | case SIGILL: |
| 1159 | case SIGFPE: |
| 1160 | case SIGSEGV: |
| 1161 | case SIGBUS: |
| 1162 | case SIGTRAP: |
| 1163 | if (info->si_code && (info->si_segvflags & __ISR_VALID)) |
| 1164 | /* ISR.W (write-access) is bit 33: */ |
| 1165 | is_write = (info->si_isr >> 33) & 1; |
| 1166 | break; |
| 1167 | |
| 1168 | default: |
| 1169 | break; |
| 1170 | } |
| 1171 | return handle_cpu_signal(ip, (unsigned long)info->si_addr, |
| 1172 | is_write, |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 1173 | (sigset_t *)&uc->uc_sigmask, puc); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1174 | } |
| 1175 | |
| 1176 | #elif defined(__s390__) |
| 1177 | |
| 1178 | int cpu_signal_handler(int host_signum, void *pinfo, |
| 1179 | void *puc) |
| 1180 | { |
| 1181 | siginfo_t *info = pinfo; |
| 1182 | struct ucontext *uc = puc; |
| 1183 | unsigned long pc; |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 1184 | uint16_t *pinsn; |
| 1185 | int is_write = 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1186 | |
| 1187 | pc = uc->uc_mcontext.psw.addr; |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 1188 | |
| 1189 | /* ??? On linux, the non-rt signal handler has 4 (!) arguments instead |
| 1190 | of the normal 2 arguments. The 3rd argument contains the "int_code" |
| 1191 | from the hardware which does in fact contain the is_write value. |
| 1192 | The rt signal handler, as far as I can tell, does not give this value |
| 1193 | at all. Not that we could get to it from here even if it were. */ |
| 1194 | /* ??? This is not even close to complete, since it ignores all |
| 1195 | of the read-modify-write instructions. */ |
| 1196 | pinsn = (uint16_t *)pc; |
| 1197 | switch (pinsn[0] >> 8) { |
| 1198 | case 0x50: /* ST */ |
| 1199 | case 0x42: /* STC */ |
| 1200 | case 0x40: /* STH */ |
| 1201 | is_write = 1; |
| 1202 | break; |
| 1203 | case 0xc4: /* RIL format insns */ |
| 1204 | switch (pinsn[0] & 0xf) { |
| 1205 | case 0xf: /* STRL */ |
| 1206 | case 0xb: /* STGRL */ |
| 1207 | case 0x7: /* STHRL */ |
| 1208 | is_write = 1; |
| 1209 | } |
| 1210 | break; |
| 1211 | case 0xe3: /* RXY format insns */ |
| 1212 | switch (pinsn[2] & 0xff) { |
| 1213 | case 0x50: /* STY */ |
| 1214 | case 0x24: /* STG */ |
| 1215 | case 0x72: /* STCY */ |
| 1216 | case 0x70: /* STHY */ |
| 1217 | case 0x8e: /* STPQ */ |
| 1218 | case 0x3f: /* STRVH */ |
| 1219 | case 0x3e: /* STRV */ |
| 1220 | case 0x2f: /* STRVG */ |
| 1221 | is_write = 1; |
| 1222 | } |
| 1223 | break; |
| 1224 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1225 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
| 1226 | is_write, &uc->uc_sigmask, puc); |
| 1227 | } |
| 1228 | |
| 1229 | #elif defined(__mips__) |
| 1230 | |
| 1231 | int cpu_signal_handler(int host_signum, void *pinfo, |
| 1232 | void *puc) |
| 1233 | { |
| 1234 | siginfo_t *info = pinfo; |
| 1235 | struct ucontext *uc = puc; |
| 1236 | greg_t pc = uc->uc_mcontext.pc; |
| 1237 | int is_write; |
| 1238 | |
| 1239 | /* XXX: compute is_write */ |
| 1240 | is_write = 0; |
| 1241 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
| 1242 | is_write, &uc->uc_sigmask, puc); |
| 1243 | } |
| 1244 | |
| 1245 | #elif defined(__hppa__) |
| 1246 | |
| 1247 | int cpu_signal_handler(int host_signum, void *pinfo, |
| 1248 | void *puc) |
| 1249 | { |
| 1250 | struct siginfo *info = pinfo; |
| 1251 | struct ucontext *uc = puc; |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 1252 | unsigned long pc = uc->uc_mcontext.sc_iaoq[0]; |
| 1253 | uint32_t insn = *(uint32_t *)pc; |
| 1254 | int is_write = 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1255 | |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 1256 | /* XXX: need kernel patch to get write flag faster. */ |
| 1257 | switch (insn >> 26) { |
| 1258 | case 0x1a: /* STW */ |
| 1259 | case 0x19: /* STH */ |
| 1260 | case 0x18: /* STB */ |
| 1261 | case 0x1b: /* STWM */ |
| 1262 | is_write = 1; |
| 1263 | break; |
| 1264 | |
| 1265 | case 0x09: /* CSTWX, FSTWX, FSTWS */ |
| 1266 | case 0x0b: /* CSTDX, FSTDX, FSTDS */ |
| 1267 | /* Distinguish from coprocessor load ... */ |
| 1268 | is_write = (insn >> 9) & 1; |
| 1269 | break; |
| 1270 | |
| 1271 | case 0x03: |
| 1272 | switch ((insn >> 6) & 15) { |
| 1273 | case 0xa: /* STWS */ |
| 1274 | case 0x9: /* STHS */ |
| 1275 | case 0x8: /* STBS */ |
| 1276 | case 0xe: /* STWAS */ |
| 1277 | case 0xc: /* STBYS */ |
| 1278 | is_write = 1; |
| 1279 | } |
| 1280 | break; |
| 1281 | } |
| 1282 | |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 1283 | return handle_cpu_signal(pc, (unsigned long)info->si_addr, |
David Turner | 24cd25a | 2010-09-10 14:22:27 +0200 | [diff] [blame] | 1284 | is_write, &uc->uc_sigmask, puc); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1285 | } |
| 1286 | |
| 1287 | #else |
| 1288 | |
| 1289 | #error host CPU specific signal handler needed |
| 1290 | |
| 1291 | #endif |
| 1292 | |
| 1293 | #endif /* !defined(CONFIG_SOFTMMU) */ |