projects / qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| 84778508 BS |
1 | /* |
| 2 | * qemu user main | |
| 3 | * | |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License as published by | |
| 8 | * the Free Software Foundation; either version 2 of the License, or | |
| 9 | * (at your option) any later version. | |
| 10 | * | |
| 11 | * This program 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 | |
| 14 | * GNU General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU General Public License | |
| 8167ee88 | 17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
| 84778508 BS |
18 | */ |
| 19 | #include <stdlib.h> | |
| 20 | #include <stdio.h> | |
| 21 | #include <stdarg.h> | |
| 22 | #include <string.h> | |
| 23 | #include <errno.h> | |
| 24 | #include <unistd.h> | |
| 25 | #include <machine/trap.h> | |
| 31fc12df BS |
26 | #include <sys/types.h> |
| 27 | #include <sys/mman.h> | |
| 84778508 BS |
28 | |
| 29 | #include "qemu.h" | |
| 30 | #include "qemu-common.h" | |
| 31 | /* For tb_lock */ | |
| 32 | #include "exec-all.h" | |
| 33 | ||
| 34 | #define DEBUG_LOGFILE "/tmp/qemu.log" | |
| 35 | ||
| 1b530a6d AJ |
36 | int singlestep; |
| 37 | ||
| 84778508 BS |
38 | static const char *interp_prefix = CONFIG_QEMU_PREFIX; |
| 39 | const char *qemu_uname_release = CONFIG_UNAME_RELEASE; | |
| 40 | extern char **environ; | |
| 41 | ||
| 42 | /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so | |
| 43 | we allocate a bigger stack. Need a better solution, for example | |
| 44 | by remapping the process stack directly at the right place */ | |
| 45 | unsigned long x86_stack_size = 512 * 1024; | |
| 46 | ||
| 47 | void gemu_log(const char *fmt, ...) | |
| 48 | { | |
| 49 | va_list ap; | |
| 50 | ||
| 51 | va_start(ap, fmt); | |
| 52 | vfprintf(stderr, fmt, ap); | |
| 53 | va_end(ap); | |
| 54 | } | |
| 9399f095 | 55 | |
| 31fc12df BS |
56 | #if defined(TARGET_I386) |
| 57 | int cpu_get_pic_interrupt(CPUState *env) | |
| 58 | { | |
| 59 | return -1; | |
| 60 | } | |
| 61 | #endif | |
| 62 | ||
| 9399f095 BS |
63 | /* These are no-ops because we are not threadsafe. */ |
| 64 | static inline void cpu_exec_start(CPUState *env) | |
| 65 | { | |
| 66 | } | |
| 67 | ||
| 68 | static inline void cpu_exec_end(CPUState *env) | |
| 69 | { | |
| 70 | } | |
| 71 | ||
| 72 | static inline void start_exclusive(void) | |
| 73 | { | |
| 74 | } | |
| 75 | ||
| 76 | static inline void end_exclusive(void) | |
| 77 | { | |
| 78 | } | |
| 79 | ||
| 80 | void fork_start(void) | |
| 81 | { | |
| 82 | } | |
| 83 | ||
| 84 | void fork_end(int child) | |
| 85 | { | |
| 86 | if (child) { | |
| 87 | gdbserver_fork(thread_env); | |
| 88 | } | |
| 89 | } | |
| 90 | ||
| 91 | void cpu_list_lock(void) | |
| 92 | { | |
| 93 | } | |
| 94 | ||
| 95 | void cpu_list_unlock(void) | |
| 96 | { | |
| 97 | } | |
| 98 | ||
| 31fc12df BS |
99 | #ifdef TARGET_I386 |
| 100 | /***********************************************************/ | |
| 101 | /* CPUX86 core interface */ | |
| 102 | ||
| 103 | void cpu_smm_update(CPUState *env) | |
| 104 | { | |
| 105 | } | |
| 106 | ||
| 107 | uint64_t cpu_get_tsc(CPUX86State *env) | |
| 108 | { | |
| 109 | return cpu_get_real_ticks(); | |
| 110 | } | |
| 111 | ||
| 112 | static void write_dt(void *ptr, unsigned long addr, unsigned long limit, | |
| 113 | int flags) | |
| 114 | { | |
| 115 | unsigned int e1, e2; | |
| 116 | uint32_t *p; | |
| 117 | e1 = (addr << 16) | (limit & 0xffff); | |
| 118 | e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); | |
| 119 | e2 |= flags; | |
| 120 | p = ptr; | |
| 121 | p[0] = tswap32(e1); | |
| 122 | p[1] = tswap32(e2); | |
| 123 | } | |
| 124 | ||
| 125 | static uint64_t *idt_table; | |
| 126 | #ifdef TARGET_X86_64 | |
| 127 | static void set_gate64(void *ptr, unsigned int type, unsigned int dpl, | |
| 128 | uint64_t addr, unsigned int sel) | |
| 129 | { | |
| 130 | uint32_t *p, e1, e2; | |
| 131 | e1 = (addr & 0xffff) | (sel << 16); | |
| 132 | e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); | |
| 133 | p = ptr; | |
| 134 | p[0] = tswap32(e1); | |
| 135 | p[1] = tswap32(e2); | |
| 136 | p[2] = tswap32(addr >> 32); | |
| 137 | p[3] = 0; | |
| 138 | } | |
| 139 | /* only dpl matters as we do only user space emulation */ | |
| 140 | static void set_idt(int n, unsigned int dpl) | |
| 141 | { | |
| 142 | set_gate64(idt_table + n * 2, 0, dpl, 0, 0); | |
| 143 | } | |
| 144 | #else | |
| 145 | static void set_gate(void *ptr, unsigned int type, unsigned int dpl, | |
| 146 | uint32_t addr, unsigned int sel) | |
| 147 | { | |
| 148 | uint32_t *p, e1, e2; | |
| 149 | e1 = (addr & 0xffff) | (sel << 16); | |
| 150 | e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); | |
| 151 | p = ptr; | |
| 152 | p[0] = tswap32(e1); | |
| 153 | p[1] = tswap32(e2); | |
| 154 | } | |
| 155 | ||
| 156 | /* only dpl matters as we do only user space emulation */ | |
| 157 | static void set_idt(int n, unsigned int dpl) | |
| 158 | { | |
| 159 | set_gate(idt_table + n, 0, dpl, 0, 0); | |
| 160 | } | |
| 161 | #endif | |
| 162 | ||
| 163 | void cpu_loop(CPUX86State *env, enum BSDType bsd_type) | |
| 164 | { | |
| 165 | int trapnr; | |
| 166 | abi_ulong pc; | |
| 167 | //target_siginfo_t info; | |
| 168 | ||
| 169 | for(;;) { | |
| 170 | trapnr = cpu_x86_exec(env); | |
| 171 | switch(trapnr) { | |
| 172 | case 0x80: | |
| 173 | /* syscall from int $0x80 */ | |
| 174 | env->regs[R_EAX] = do_openbsd_syscall(env, | |
| 175 | env->regs[R_EAX], | |
| 176 | env->regs[R_EBX], | |
| 177 | env->regs[R_ECX], | |
| 178 | env->regs[R_EDX], | |
| 179 | env->regs[R_ESI], | |
| 180 | env->regs[R_EDI], | |
| 181 | env->regs[R_EBP]); | |
| 182 | break; | |
| 183 | #ifndef TARGET_ABI32 | |
| 184 | case EXCP_SYSCALL: | |
| 185 | /* linux syscall from syscall intruction */ | |
| 186 | env->regs[R_EAX] = do_openbsd_syscall(env, | |
| 187 | env->regs[R_EAX], | |
| 188 | env->regs[R_EDI], | |
| 189 | env->regs[R_ESI], | |
| 190 | env->regs[R_EDX], | |
| 191 | env->regs[10], | |
| 192 | env->regs[8], | |
| 193 | env->regs[9]); | |
| 194 | env->eip = env->exception_next_eip; | |
| 195 | break; | |
| 196 | #endif | |
| 197 | #if 0 | |
| 198 | case EXCP0B_NOSEG: | |
| 199 | case EXCP0C_STACK: | |
| 200 | info.si_signo = SIGBUS; | |
| 201 | info.si_errno = 0; | |
| 202 | info.si_code = TARGET_SI_KERNEL; | |
| 203 | info._sifields._sigfault._addr = 0; | |
| 204 | queue_signal(env, info.si_signo, &info); | |
| 205 | break; | |
| 206 | case EXCP0D_GPF: | |
| 207 | /* XXX: potential problem if ABI32 */ | |
| 208 | #ifndef TARGET_X86_64 | |
| 209 | if (env->eflags & VM_MASK) { | |
| 210 | handle_vm86_fault(env); | |
| 211 | } else | |
| 212 | #endif | |
| 213 | { | |
| 214 | info.si_signo = SIGSEGV; | |
| 215 | info.si_errno = 0; | |
| 216 | info.si_code = TARGET_SI_KERNEL; | |
| 217 | info._sifields._sigfault._addr = 0; | |
| 218 | queue_signal(env, info.si_signo, &info); | |
| 219 | } | |
| 220 | break; | |
| 221 | case EXCP0E_PAGE: | |
| 222 | info.si_signo = SIGSEGV; | |
| 223 | info.si_errno = 0; | |
| 224 | if (!(env->error_code & 1)) | |
| 225 | info.si_code = TARGET_SEGV_MAPERR; | |
| 226 | else | |
| 227 | info.si_code = TARGET_SEGV_ACCERR; | |
| 228 | info._sifields._sigfault._addr = env->cr[2]; | |
| 229 | queue_signal(env, info.si_signo, &info); | |
| 230 | break; | |
| 231 | case EXCP00_DIVZ: | |
| 232 | #ifndef TARGET_X86_64 | |
| 233 | if (env->eflags & VM_MASK) { | |
| 234 | handle_vm86_trap(env, trapnr); | |
| 235 | } else | |
| 236 | #endif | |
| 237 | { | |
| 238 | /* division by zero */ | |
| 239 | info.si_signo = SIGFPE; | |
| 240 | info.si_errno = 0; | |
| 241 | info.si_code = TARGET_FPE_INTDIV; | |
| 242 | info._sifields._sigfault._addr = env->eip; | |
| 243 | queue_signal(env, info.si_signo, &info); | |
| 244 | } | |
| 245 | break; | |
| 246 | case EXCP01_DB: | |
| 247 | case EXCP03_INT3: | |
| 248 | #ifndef TARGET_X86_64 | |
| 249 | if (env->eflags & VM_MASK) { | |
| 250 | handle_vm86_trap(env, trapnr); | |
| 251 | } else | |
| 252 | #endif | |
| 253 | { | |
| 254 | info.si_signo = SIGTRAP; | |
| 255 | info.si_errno = 0; | |
| 256 | if (trapnr == EXCP01_DB) { | |
| 257 | info.si_code = TARGET_TRAP_BRKPT; | |
| 258 | info._sifields._sigfault._addr = env->eip; | |
| 259 | } else { | |
| 260 | info.si_code = TARGET_SI_KERNEL; | |
| 261 | info._sifields._sigfault._addr = 0; | |
| 262 | } | |
| 263 | queue_signal(env, info.si_signo, &info); | |
| 264 | } | |
| 265 | break; | |
| 266 | case EXCP04_INTO: | |
| 267 | case EXCP05_BOUND: | |
| 268 | #ifndef TARGET_X86_64 | |
| 269 | if (env->eflags & VM_MASK) { | |
| 270 | handle_vm86_trap(env, trapnr); | |
| 271 | } else | |
| 272 | #endif | |
| 273 | { | |
| 274 | info.si_signo = SIGSEGV; | |
| 275 | info.si_errno = 0; | |
| 276 | info.si_code = TARGET_SI_KERNEL; | |
| 277 | info._sifields._sigfault._addr = 0; | |
| 278 | queue_signal(env, info.si_signo, &info); | |
| 279 | } | |
| 280 | break; | |
| 281 | case EXCP06_ILLOP: | |
| 282 | info.si_signo = SIGILL; | |
| 283 | info.si_errno = 0; | |
| 284 | info.si_code = TARGET_ILL_ILLOPN; | |
| 285 | info._sifields._sigfault._addr = env->eip; | |
| 286 | queue_signal(env, info.si_signo, &info); | |
| 287 | break; | |
| 288 | #endif | |
| 289 | case EXCP_INTERRUPT: | |
| 290 | /* just indicate that signals should be handled asap */ | |
| 291 | break; | |
| 292 | #if 0 | |
| 293 | case EXCP_DEBUG: | |
| 294 | { | |
| 295 | int sig; | |
| 296 | ||
| 297 | sig = gdb_handlesig (env, TARGET_SIGTRAP); | |
| 298 | if (sig) | |
| 299 | { | |
| 300 | info.si_signo = sig; | |
| 301 | info.si_errno = 0; | |
| 302 | info.si_code = TARGET_TRAP_BRKPT; | |
| 303 | queue_signal(env, info.si_signo, &info); | |
| 304 | } | |
| 305 | } | |
| 306 | break; | |
| 307 | #endif | |
| 308 | default: | |
| 309 | pc = env->segs[R_CS].base + env->eip; | |
| 310 | fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n", | |
| 311 | (long)pc, trapnr); | |
| 312 | abort(); | |
| 313 | } | |
| 314 | process_pending_signals(env); | |
| 315 | } | |
| 316 | } | |
| 317 | #endif | |
| 318 | ||
| 84778508 BS |
319 | #ifdef TARGET_SPARC |
| 320 | #define SPARC64_STACK_BIAS 2047 | |
| 321 | ||
| 322 | //#define DEBUG_WIN | |
| 323 | /* WARNING: dealing with register windows _is_ complicated. More info | |
| 324 | can be found at http://www.sics.se/~psm/sparcstack.html */ | |
| 325 | static inline int get_reg_index(CPUSPARCState *env, int cwp, int index) | |
| 326 | { | |
| 327 | index = (index + cwp * 16) % (16 * env->nwindows); | |
| 328 | /* wrap handling : if cwp is on the last window, then we use the | |
| 329 | registers 'after' the end */ | |
| 330 | if (index < 8 && env->cwp == env->nwindows - 1) | |
| 331 | index += 16 * env->nwindows; | |
| 332 | return index; | |
| 333 | } | |
| 334 | ||
| 335 | /* save the register window 'cwp1' */ | |
| 336 | static inline void save_window_offset(CPUSPARCState *env, int cwp1) | |
| 337 | { | |
| 338 | unsigned int i; | |
| 339 | abi_ulong sp_ptr; | |
| 340 | ||
| 341 | sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)]; | |
| 342 | #ifdef TARGET_SPARC64 | |
| 343 | if (sp_ptr & 3) | |
| 344 | sp_ptr += SPARC64_STACK_BIAS; | |
| 345 | #endif | |
| 346 | #if defined(DEBUG_WIN) | |
| 347 | printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n", | |
| 348 | sp_ptr, cwp1); | |
| 349 | #endif | |
| 350 | for(i = 0; i < 16; i++) { | |
| 351 | /* FIXME - what to do if put_user() fails? */ | |
| 352 | put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr); | |
| 353 | sp_ptr += sizeof(abi_ulong); | |
| 354 | } | |
| 355 | } | |
| 356 | ||
| 357 | static void save_window(CPUSPARCState *env) | |
| 358 | { | |
| 359 | #ifndef TARGET_SPARC64 | |
| 360 | unsigned int new_wim; | |
| 361 | new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) & | |
| 362 | ((1LL << env->nwindows) - 1); | |
| 363 | save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2)); | |
| 364 | env->wim = new_wim; | |
| 365 | #else | |
| 366 | save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2)); | |
| 367 | env->cansave++; | |
| 368 | env->canrestore--; | |
| 369 | #endif | |
| 370 | } | |
| 371 | ||
| 372 | static void restore_window(CPUSPARCState *env) | |
| 373 | { | |
| 374 | #ifndef TARGET_SPARC64 | |
| 375 | unsigned int new_wim; | |
| 376 | #endif | |
| 377 | unsigned int i, cwp1; | |
| 378 | abi_ulong sp_ptr; | |
| 379 | ||
| 380 | #ifndef TARGET_SPARC64 | |
| 381 | new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) & | |
| 382 | ((1LL << env->nwindows) - 1); | |
| 383 | #endif | |
| 384 | ||
| 385 | /* restore the invalid window */ | |
| 386 | cwp1 = cpu_cwp_inc(env, env->cwp + 1); | |
| 387 | sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)]; | |
| 388 | #ifdef TARGET_SPARC64 | |
| 389 | if (sp_ptr & 3) | |
| 390 | sp_ptr += SPARC64_STACK_BIAS; | |
| 391 | #endif | |
| 392 | #if defined(DEBUG_WIN) | |
| 393 | printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n", | |
| 394 | sp_ptr, cwp1); | |
| 395 | #endif | |
| 396 | for(i = 0; i < 16; i++) { | |
| 397 | /* FIXME - what to do if get_user() fails? */ | |
| 398 | get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr); | |
| 399 | sp_ptr += sizeof(abi_ulong); | |
| 400 | } | |
| 401 | #ifdef TARGET_SPARC64 | |
| 402 | env->canrestore++; | |
| 403 | if (env->cleanwin < env->nwindows - 1) | |
| 404 | env->cleanwin++; | |
| 405 | env->cansave--; | |
| 406 | #else | |
| 407 | env->wim = new_wim; | |
| 408 | #endif | |
| 409 | } | |
| 410 | ||
| 411 | static void flush_windows(CPUSPARCState *env) | |
| 412 | { | |
| 413 | int offset, cwp1; | |
| 414 | ||
| 415 | offset = 1; | |
| 416 | for(;;) { | |
| 417 | /* if restore would invoke restore_window(), then we can stop */ | |
| 418 | cwp1 = cpu_cwp_inc(env, env->cwp + offset); | |
| 419 | #ifndef TARGET_SPARC64 | |
| 420 | if (env->wim & (1 << cwp1)) | |
| 421 | break; | |
| 422 | #else | |
| 423 | if (env->canrestore == 0) | |
| 424 | break; | |
| 425 | env->cansave++; | |
| 426 | env->canrestore--; | |
| 427 | #endif | |
| 428 | save_window_offset(env, cwp1); | |
| 429 | offset++; | |
| 430 | } | |
| 431 | cwp1 = cpu_cwp_inc(env, env->cwp + 1); | |
| 432 | #ifndef TARGET_SPARC64 | |
| 433 | /* set wim so that restore will reload the registers */ | |
| 434 | env->wim = 1 << cwp1; | |
| 435 | #endif | |
| 436 | #if defined(DEBUG_WIN) | |
| 437 | printf("flush_windows: nb=%d\n", offset - 1); | |
| 438 | #endif | |
| 439 | } | |
| 440 | ||
| 441 | void cpu_loop(CPUSPARCState *env, enum BSDType bsd_type) | |
| 442 | { | |
| 443 | int trapnr, ret, syscall_nr; | |
| 444 | //target_siginfo_t info; | |
| 445 | ||
| 446 | while (1) { | |
| 447 | trapnr = cpu_sparc_exec (env); | |
| 448 | ||
| 449 | switch (trapnr) { | |
| 77b9435f BS |
450 | #ifndef TARGET_SPARC64 |
| 451 | case 0x80: | |
| 452 | #else | |
| 84778508 | 453 | case 0x100: |
| 77b9435f | 454 | #endif |
| 84778508 | 455 | syscall_nr = env->gregs[1]; |
| 84778508 BS |
456 | if (bsd_type == target_freebsd) |
| 457 | ret = do_freebsd_syscall(env, syscall_nr, | |
| 458 | env->regwptr[0], env->regwptr[1], | |
| 459 | env->regwptr[2], env->regwptr[3], | |
| 460 | env->regwptr[4], env->regwptr[5]); | |
| 461 | else if (bsd_type == target_netbsd) | |
| 462 | ret = do_netbsd_syscall(env, syscall_nr, | |
| 463 | env->regwptr[0], env->regwptr[1], | |
| 464 | env->regwptr[2], env->regwptr[3], | |
| 465 | env->regwptr[4], env->regwptr[5]); | |
| cdba95bd BS |
466 | else { //if (bsd_type == target_openbsd) |
| 467 | #if defined(TARGET_SPARC64) | |
| 468 | syscall_nr &= ~(TARGET_OPENBSD_SYSCALL_G7RFLAG | | |
| 469 | TARGET_OPENBSD_SYSCALL_G2RFLAG); | |
| 470 | #endif | |
| 84778508 BS |
471 | ret = do_openbsd_syscall(env, syscall_nr, |
| 472 | env->regwptr[0], env->regwptr[1], | |
| 473 | env->regwptr[2], env->regwptr[3], | |
| 474 | env->regwptr[4], env->regwptr[5]); | |
| cdba95bd | 475 | } |
| 84778508 BS |
476 | if ((unsigned int)ret >= (unsigned int)(-515)) { |
| 477 | #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) | |
| 478 | env->xcc |= PSR_CARRY; | |
| 479 | #else | |
| 480 | env->psr |= PSR_CARRY; | |
| 481 | #endif | |
| 482 | } else { | |
| 483 | #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) | |
| 484 | env->xcc &= ~PSR_CARRY; | |
| 485 | #else | |
| 486 | env->psr &= ~PSR_CARRY; | |
| 487 | #endif | |
| 488 | } | |
| 489 | env->regwptr[0] = ret; | |
| 490 | /* next instruction */ | |
| cdba95bd BS |
491 | #if defined(TARGET_SPARC64) |
| 492 | if (bsd_type == target_openbsd && | |
| 493 | env->gregs[1] & TARGET_OPENBSD_SYSCALL_G2RFLAG) { | |
| 84778508 BS |
494 | env->pc = env->gregs[2]; |
| 495 | env->npc = env->pc + 4; | |
| cdba95bd BS |
496 | } else if (bsd_type == target_openbsd && |
| 497 | env->gregs[1] & TARGET_OPENBSD_SYSCALL_G7RFLAG) { | |
| 84778508 BS |
498 | env->pc = env->gregs[7]; |
| 499 | env->npc = env->pc + 4; | |
| 500 | } else { | |
| 501 | env->pc = env->npc; | |
| 502 | env->npc = env->npc + 4; | |
| 503 | } | |
| 504 | #else | |
| 505 | env->pc = env->npc; | |
| 506 | env->npc = env->npc + 4; | |
| 507 | #endif | |
| 508 | break; | |
| 509 | case 0x83: /* flush windows */ | |
| 510 | #ifdef TARGET_ABI32 | |
| 511 | case 0x103: | |
| 512 | #endif | |
| 513 | flush_windows(env); | |
| 514 | /* next instruction */ | |
| 515 | env->pc = env->npc; | |
| 516 | env->npc = env->npc + 4; | |
| 517 | break; | |
| 518 | #ifndef TARGET_SPARC64 | |
| 519 | case TT_WIN_OVF: /* window overflow */ | |
| 520 | save_window(env); | |
| 521 | break; | |
| 522 | case TT_WIN_UNF: /* window underflow */ | |
| 523 | restore_window(env); | |
| 524 | break; | |
| 525 | case TT_TFAULT: | |
| 526 | case TT_DFAULT: | |
| 527 | #if 0 | |
| 528 | { | |
| 529 | info.si_signo = SIGSEGV; | |
| 530 | info.si_errno = 0; | |
| 531 | /* XXX: check env->error_code */ | |
| 532 | info.si_code = TARGET_SEGV_MAPERR; | |
| 533 | info._sifields._sigfault._addr = env->mmuregs[4]; | |
| 534 | queue_signal(env, info.si_signo, &info); | |
| 535 | } | |
| 536 | #endif | |
| 537 | break; | |
| 538 | #else | |
| 539 | case TT_SPILL: /* window overflow */ | |
| 540 | save_window(env); | |
| 541 | break; | |
| 542 | case TT_FILL: /* window underflow */ | |
| 543 | restore_window(env); | |
| 544 | break; | |
| 545 | case TT_TFAULT: | |
| 546 | case TT_DFAULT: | |
| 547 | #if 0 | |
| 548 | { | |
| 549 | info.si_signo = SIGSEGV; | |
| 550 | info.si_errno = 0; | |
| 551 | /* XXX: check env->error_code */ | |
| 552 | info.si_code = TARGET_SEGV_MAPERR; | |
| 553 | if (trapnr == TT_DFAULT) | |
| 554 | info._sifields._sigfault._addr = env->dmmuregs[4]; | |
| 555 | else | |
| 556 | info._sifields._sigfault._addr = env->tsptr->tpc; | |
| 557 | //queue_signal(env, info.si_signo, &info); | |
| 558 | } | |
| 559 | #endif | |
| 560 | break; | |
| 561 | #endif | |
| 562 | case EXCP_INTERRUPT: | |
| 563 | /* just indicate that signals should be handled asap */ | |
| 564 | break; | |
| 565 | case EXCP_DEBUG: | |
| 566 | { | |
| 567 | int sig; | |
| 568 | ||
| 569 | sig = gdb_handlesig (env, TARGET_SIGTRAP); | |
| 570 | #if 0 | |
| 571 | if (sig) | |
| 572 | { | |
| 573 | info.si_signo = sig; | |
| 574 | info.si_errno = 0; | |
| 575 | info.si_code = TARGET_TRAP_BRKPT; | |
| 576 | //queue_signal(env, info.si_signo, &info); | |
| 577 | } | |
| 578 | #endif | |
| 579 | } | |
| 580 | break; | |
| 581 | default: | |
| 582 | printf ("Unhandled trap: 0x%x\n", trapnr); | |
| 583 | cpu_dump_state(env, stderr, fprintf, 0); | |
| 584 | exit (1); | |
| 585 | } | |
| 586 | process_pending_signals (env); | |
| 587 | } | |
| 588 | } | |
| 589 | ||
| 590 | #endif | |
| 591 | ||
| 592 | static void usage(void) | |
| 593 | { | |
| 594 | printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n" | |
| 595 | "usage: qemu-" TARGET_ARCH " [options] program [arguments...]\n" | |
| 596 | "BSD CPU emulator (compiled for %s emulation)\n" | |
| 597 | "\n" | |
| 598 | "Standard options:\n" | |
| 599 | "-h print this help\n" | |
| 600 | "-g port wait gdb connection to port\n" | |
| 601 | "-L path set the elf interpreter prefix (default=%s)\n" | |
| 602 | "-s size set the stack size in bytes (default=%ld)\n" | |
| 603 | "-cpu model select CPU (-cpu ? for list)\n" | |
| 604 | "-drop-ld-preload drop LD_PRELOAD for target process\n" | |
| 605 | "-bsd type select emulated BSD type FreeBSD/NetBSD/OpenBSD (default)\n" | |
| 606 | "\n" | |
| 607 | "Debug options:\n" | |
| 608 | "-d options activate log (logfile=%s)\n" | |
| 609 | "-p pagesize set the host page size to 'pagesize'\n" | |
| 1b530a6d | 610 | "-singlestep always run in singlestep mode\n" |
| 84778508 BS |
611 | "-strace log system calls\n" |
| 612 | "\n" | |
| 613 | "Environment variables:\n" | |
| 614 | "QEMU_STRACE Print system calls and arguments similar to the\n" | |
| 615 | " 'strace' program. Enable by setting to any value.\n" | |
| 616 | , | |
| 617 | TARGET_ARCH, | |
| 618 | interp_prefix, | |
| 619 | x86_stack_size, | |
| 620 | DEBUG_LOGFILE); | |
| 2d18e637 | 621 | exit(1); |
| 84778508 BS |
622 | } |
| 623 | ||
| 624 | THREAD CPUState *thread_env; | |
| 625 | ||
| 626 | /* Assumes contents are already zeroed. */ | |
| 627 | void init_task_state(TaskState *ts) | |
| 628 | { | |
| 629 | int i; | |
| 630 | ||
| 631 | ts->used = 1; | |
| 632 | ts->first_free = ts->sigqueue_table; | |
| 633 | for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) { | |
| 634 | ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1]; | |
| 635 | } | |
| 636 | ts->sigqueue_table[i].next = NULL; | |
| 637 | } | |
| 638 | ||
| 639 | int main(int argc, char **argv) | |
| 640 | { | |
| 641 | const char *filename; | |
| 642 | const char *cpu_model; | |
| 643 | struct target_pt_regs regs1, *regs = ®s1; | |
| 644 | struct image_info info1, *info = &info1; | |
| 645 | TaskState ts1, *ts = &ts1; | |
| 646 | CPUState *env; | |
| 647 | int optind; | |
| 648 | const char *r; | |
| 649 | int gdbstub_port = 0; | |
| 650 | int drop_ld_preload = 0, environ_count = 0; | |
| 651 | char **target_environ, **wrk, **dst; | |
| 652 | enum BSDType bsd_type = target_openbsd; | |
| 653 | ||
| 654 | if (argc <= 1) | |
| 655 | usage(); | |
| 656 | ||
| 657 | /* init debug */ | |
| 658 | cpu_set_log_filename(DEBUG_LOGFILE); | |
| 659 | ||
| 660 | cpu_model = NULL; | |
| 661 | optind = 1; | |
| 662 | for(;;) { | |
| 663 | if (optind >= argc) | |
| 664 | break; | |
| 665 | r = argv[optind]; | |
| 666 | if (r[0] != '-') | |
| 667 | break; | |
| 668 | optind++; | |
| 669 | r++; | |
| 670 | if (!strcmp(r, "-")) { | |
| 671 | break; | |
| 672 | } else if (!strcmp(r, "d")) { | |
| 673 | int mask; | |
| 674 | const CPULogItem *item; | |
| 675 | ||
| 676 | if (optind >= argc) | |
| 677 | break; | |
| 678 | ||
| 679 | r = argv[optind++]; | |
| 680 | mask = cpu_str_to_log_mask(r); | |
| 681 | if (!mask) { | |
| 682 | printf("Log items (comma separated):\n"); | |
| 683 | for(item = cpu_log_items; item->mask != 0; item++) { | |
| 684 | printf("%-10s %s\n", item->name, item->help); | |
| 685 | } | |
| 686 | exit(1); | |
| 687 | } | |
| 688 | cpu_set_log(mask); | |
| 689 | } else if (!strcmp(r, "s")) { | |
| 690 | r = argv[optind++]; | |
| 691 | x86_stack_size = strtol(r, (char **)&r, 0); | |
| 692 | if (x86_stack_size <= 0) | |
| 693 | usage(); | |
| 694 | if (*r == 'M') | |
| 695 | x86_stack_size *= 1024 * 1024; | |
| 696 | else if (*r == 'k' || *r == 'K') | |
| 697 | x86_stack_size *= 1024; | |
| 698 | } else if (!strcmp(r, "L")) { | |
| 699 | interp_prefix = argv[optind++]; | |
| 700 | } else if (!strcmp(r, "p")) { | |
| 701 | qemu_host_page_size = atoi(argv[optind++]); | |
| 702 | if (qemu_host_page_size == 0 || | |
| 703 | (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { | |
| 704 | fprintf(stderr, "page size must be a power of two\n"); | |
| 705 | exit(1); | |
| 706 | } | |
| 707 | } else if (!strcmp(r, "g")) { | |
| 708 | gdbstub_port = atoi(argv[optind++]); | |
| 709 | } else if (!strcmp(r, "r")) { | |
| 710 | qemu_uname_release = argv[optind++]; | |
| 711 | } else if (!strcmp(r, "cpu")) { | |
| 712 | cpu_model = argv[optind++]; | |
| 713 | if (strcmp(cpu_model, "?") == 0) { | |
| 714 | /* XXX: implement xxx_cpu_list for targets that still miss it */ | |
| 715 | #if defined(cpu_list) | |
| 716 | cpu_list(stdout, &fprintf); | |
| 717 | #endif | |
| 2d18e637 | 718 | exit(1); |
| 84778508 BS |
719 | } |
| 720 | } else if (!strcmp(r, "drop-ld-preload")) { | |
| 721 | drop_ld_preload = 1; | |
| 722 | } else if (!strcmp(r, "bsd")) { | |
| 723 | if (!strcasecmp(argv[optind], "freebsd")) { | |
| 724 | bsd_type = target_freebsd; | |
| 725 | } else if (!strcasecmp(argv[optind], "netbsd")) { | |
| 726 | bsd_type = target_netbsd; | |
| 727 | } else if (!strcasecmp(argv[optind], "openbsd")) { | |
| 728 | bsd_type = target_openbsd; | |
| 729 | } else { | |
| 730 | usage(); | |
| 731 | } | |
| 732 | optind++; | |
| 1b530a6d AJ |
733 | } else if (!strcmp(r, "singlestep")) { |
| 734 | singlestep = 1; | |
| 84778508 BS |
735 | } else if (!strcmp(r, "strace")) { |
| 736 | do_strace = 1; | |
| 737 | } else | |
| 738 | { | |
| 739 | usage(); | |
| 740 | } | |
| 741 | } | |
| 742 | if (optind >= argc) | |
| 743 | usage(); | |
| 744 | filename = argv[optind]; | |
| 745 | ||
| 746 | /* Zero out regs */ | |
| 747 | memset(regs, 0, sizeof(struct target_pt_regs)); | |
| 748 | ||
| 749 | /* Zero out image_info */ | |
| 750 | memset(info, 0, sizeof(struct image_info)); | |
| 751 | ||
| 752 | /* Scan interp_prefix dir for replacement files. */ | |
| 753 | init_paths(interp_prefix); | |
| 754 | ||
| 755 | if (cpu_model == NULL) { | |
| 31fc12df BS |
756 | #if defined(TARGET_I386) |
| 757 | #ifdef TARGET_X86_64 | |
| 758 | cpu_model = "qemu64"; | |
| 759 | #else | |
| 760 | cpu_model = "qemu32"; | |
| 761 | #endif | |
| 762 | #elif defined(TARGET_SPARC) | |
| 84778508 BS |
763 | #ifdef TARGET_SPARC64 |
| 764 | cpu_model = "TI UltraSparc II"; | |
| 765 | #else | |
| 766 | cpu_model = "Fujitsu MB86904"; | |
| 767 | #endif | |
| 768 | #else | |
| 769 | cpu_model = "any"; | |
| 770 | #endif | |
| 771 | } | |
| 772 | cpu_exec_init_all(0); | |
| 773 | /* NOTE: we need to init the CPU at this stage to get | |
| 774 | qemu_host_page_size */ | |
| 775 | env = cpu_init(cpu_model); | |
| 776 | if (!env) { | |
| 777 | fprintf(stderr, "Unable to find CPU definition\n"); | |
| 778 | exit(1); | |
| 779 | } | |
| 780 | thread_env = env; | |
| 781 | ||
| 782 | if (getenv("QEMU_STRACE")) { | |
| 783 | do_strace = 1; | |
| 784 | } | |
| 785 | ||
| 786 | wrk = environ; | |
| 787 | while (*(wrk++)) | |
| 788 | environ_count++; | |
| 789 | ||
| 790 | target_environ = malloc((environ_count + 1) * sizeof(char *)); | |
| 791 | if (!target_environ) | |
| 792 | abort(); | |
| 793 | for (wrk = environ, dst = target_environ; *wrk; wrk++) { | |
| 794 | if (drop_ld_preload && !strncmp(*wrk, "LD_PRELOAD=", 11)) | |
| 795 | continue; | |
| 796 | *(dst++) = strdup(*wrk); | |
| 797 | } | |
| 798 | *dst = NULL; /* NULL terminate target_environ */ | |
| 799 | ||
| 800 | if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) { | |
| 801 | printf("Error loading %s\n", filename); | |
| 802 | _exit(1); | |
| 803 | } | |
| 804 | ||
| 805 | for (wrk = target_environ; *wrk; wrk++) { | |
| 806 | free(*wrk); | |
| 807 | } | |
| 808 | ||
| 809 | free(target_environ); | |
| 810 | ||
| 2e77eac6 BS |
811 | if (qemu_log_enabled()) { |
| 812 | log_page_dump(); | |
| 813 | ||
| 814 | qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk); | |
| 815 | qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code); | |
| 816 | qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n", | |
| 817 | info->start_code); | |
| 818 | qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n", | |
| 819 | info->start_data); | |
| 820 | qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data); | |
| 821 | qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n", | |
| 822 | info->start_stack); | |
| 823 | qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk); | |
| 824 | qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry); | |
| 825 | } | |
| 84778508 BS |
826 | |
| 827 | target_set_brk(info->brk); | |
| 828 | syscall_init(); | |
| 829 | signal_init(); | |
| 830 | ||
| 831 | /* build Task State */ | |
| 832 | memset(ts, 0, sizeof(TaskState)); | |
| 833 | init_task_state(ts); | |
| 834 | ts->info = info; | |
| 835 | env->opaque = ts; | |
| 84778508 | 836 | |
| 31fc12df BS |
837 | #if defined(TARGET_I386) |
| 838 | cpu_x86_set_cpl(env, 3); | |
| 839 | ||
| 840 | env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK; | |
| 841 | env->hflags |= HF_PE_MASK; | |
| 842 | if (env->cpuid_features & CPUID_SSE) { | |
| 843 | env->cr[4] |= CR4_OSFXSR_MASK; | |
| 844 | env->hflags |= HF_OSFXSR_MASK; | |
| 845 | } | |
| 846 | #ifndef TARGET_ABI32 | |
| 847 | /* enable 64 bit mode if possible */ | |
| 848 | if (!(env->cpuid_ext2_features & CPUID_EXT2_LM)) { | |
| 849 | fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n"); | |
| 850 | exit(1); | |
| 851 | } | |
| 852 | env->cr[4] |= CR4_PAE_MASK; | |
| 853 | env->efer |= MSR_EFER_LMA | MSR_EFER_LME; | |
| 854 | env->hflags |= HF_LMA_MASK; | |
| 855 | #endif | |
| 856 | ||
| 857 | /* flags setup : we activate the IRQs by default as in user mode */ | |
| 858 | env->eflags |= IF_MASK; | |
| 859 | ||
| 860 | /* linux register setup */ | |
| 861 | #ifndef TARGET_ABI32 | |
| 862 | env->regs[R_EAX] = regs->rax; | |
| 863 | env->regs[R_EBX] = regs->rbx; | |
| 864 | env->regs[R_ECX] = regs->rcx; | |
| 865 | env->regs[R_EDX] = regs->rdx; | |
| 866 | env->regs[R_ESI] = regs->rsi; | |
| 867 | env->regs[R_EDI] = regs->rdi; | |
| 868 | env->regs[R_EBP] = regs->rbp; | |
| 869 | env->regs[R_ESP] = regs->rsp; | |
| 870 | env->eip = regs->rip; | |
| 871 | #else | |
| 872 | env->regs[R_EAX] = regs->eax; | |
| 873 | env->regs[R_EBX] = regs->ebx; | |
| 874 | env->regs[R_ECX] = regs->ecx; | |
| 875 | env->regs[R_EDX] = regs->edx; | |
| 876 | env->regs[R_ESI] = regs->esi; | |
| 877 | env->regs[R_EDI] = regs->edi; | |
| 878 | env->regs[R_EBP] = regs->ebp; | |
| 879 | env->regs[R_ESP] = regs->esp; | |
| 880 | env->eip = regs->eip; | |
| 881 | #endif | |
| 882 | ||
| 883 | /* linux interrupt setup */ | |
| 884 | #ifndef TARGET_ABI32 | |
| 885 | env->idt.limit = 511; | |
| 886 | #else | |
| 887 | env->idt.limit = 255; | |
| 888 | #endif | |
| 889 | env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1), | |
| 890 | PROT_READ|PROT_WRITE, | |
| 891 | MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); | |
| 892 | idt_table = g2h(env->idt.base); | |
| 893 | set_idt(0, 0); | |
| 894 | set_idt(1, 0); | |
| 895 | set_idt(2, 0); | |
| 896 | set_idt(3, 3); | |
| 897 | set_idt(4, 3); | |
| 898 | set_idt(5, 0); | |
| 899 | set_idt(6, 0); | |
| 900 | set_idt(7, 0); | |
| 901 | set_idt(8, 0); | |
| 902 | set_idt(9, 0); | |
| 903 | set_idt(10, 0); | |
| 904 | set_idt(11, 0); | |
| 905 | set_idt(12, 0); | |
| 906 | set_idt(13, 0); | |
| 907 | set_idt(14, 0); | |
| 908 | set_idt(15, 0); | |
| 909 | set_idt(16, 0); | |
| 910 | set_idt(17, 0); | |
| 911 | set_idt(18, 0); | |
| 912 | set_idt(19, 0); | |
| 913 | set_idt(0x80, 3); | |
| 914 | ||
| 915 | /* linux segment setup */ | |
| 916 | { | |
| 917 | uint64_t *gdt_table; | |
| 918 | env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES, | |
| 919 | PROT_READ|PROT_WRITE, | |
| 920 | MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); | |
| 921 | env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1; | |
| 922 | gdt_table = g2h(env->gdt.base); | |
| 923 | #ifdef TARGET_ABI32 | |
| 924 | write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, | |
| 925 | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | | |
| 926 | (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); | |
| 927 | #else | |
| 928 | /* 64 bit code segment */ | |
| 929 | write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, | |
| 930 | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | | |
| 931 | DESC_L_MASK | | |
| 932 | (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); | |
| 933 | #endif | |
| 934 | write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff, | |
| 935 | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | | |
| 936 | (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); | |
| 937 | } | |
| 938 | ||
| 939 | cpu_x86_load_seg(env, R_CS, __USER_CS); | |
| 940 | cpu_x86_load_seg(env, R_SS, __USER_DS); | |
| 941 | #ifdef TARGET_ABI32 | |
| 942 | cpu_x86_load_seg(env, R_DS, __USER_DS); | |
| 943 | cpu_x86_load_seg(env, R_ES, __USER_DS); | |
| 944 | cpu_x86_load_seg(env, R_FS, __USER_DS); | |
| 945 | cpu_x86_load_seg(env, R_GS, __USER_DS); | |
| 946 | /* This hack makes Wine work... */ | |
| 947 | env->segs[R_FS].selector = 0; | |
| 948 | #else | |
| 949 | cpu_x86_load_seg(env, R_DS, 0); | |
| 950 | cpu_x86_load_seg(env, R_ES, 0); | |
| 951 | cpu_x86_load_seg(env, R_FS, 0); | |
| 952 | cpu_x86_load_seg(env, R_GS, 0); | |
| 953 | #endif | |
| 954 | #elif defined(TARGET_SPARC) | |
| 84778508 BS |
955 | { |
| 956 | int i; | |
| 957 | env->pc = regs->pc; | |
| 958 | env->npc = regs->npc; | |
| 959 | env->y = regs->y; | |
| 960 | for(i = 0; i < 8; i++) | |
| 961 | env->gregs[i] = regs->u_regs[i]; | |
| 962 | for(i = 0; i < 8; i++) | |
| 963 | env->regwptr[i] = regs->u_regs[i + 8]; | |
| 964 | } | |
| 965 | #else | |
| 966 | #error unsupported target CPU | |
| 967 | #endif | |
| 968 | ||
| 969 | if (gdbstub_port) { | |
| 970 | gdbserver_start (gdbstub_port); | |
| 971 | gdb_handlesig(env, 0); | |
| 972 | } | |
| 973 | cpu_loop(env, bsd_type); | |
| 974 | /* never exits */ | |
| 975 | return 0; | |
| 976 | } |