ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 1 | /* |
| 2 | * qemu user main |
| 3 | * |
| 4 | * Copyright (c) 2003 Fabrice Bellard |
| 5 | * Copyright (c) 2006 Pierre d'Herbemont |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 20 | */ |
| 21 | #include <stdlib.h> |
| 22 | #include <stdio.h> |
| 23 | #include <stdarg.h> |
| 24 | #include <string.h> |
| 25 | #include <errno.h> |
| 26 | #include <unistd.h> |
| 27 | |
| 28 | #include <sys/syscall.h> |
| 29 | #include <sys/mman.h> |
| 30 | |
| 31 | #include "qemu.h" |
| 32 | |
| 33 | #define DEBUG_LOGFILE "/tmp/qemu.log" |
| 34 | |
| 35 | #ifdef __APPLE__ |
| 36 | #include <crt_externs.h> |
| 37 | # define environ (*_NSGetEnviron()) |
| 38 | #endif |
| 39 | |
| 40 | #include <mach/mach_init.h> |
| 41 | #include <mach/vm_map.h> |
| 42 | |
| 43 | const char *interp_prefix = ""; |
| 44 | |
| 45 | asm(".zerofill __STD_PROG_ZONE, __STD_PROG_ZONE, __std_prog_zone, 0x0dfff000"); |
| 46 | |
| 47 | /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so |
| 48 | we allocate a bigger stack. Need a better solution, for example |
| 49 | by remapping the process stack directly at the right place */ |
| 50 | unsigned long stack_size = 512 * 1024; |
| 51 | |
| 52 | void qerror(const char *fmt, ...) |
| 53 | { |
| 54 | va_list ap; |
| 55 | |
| 56 | va_start(ap, fmt); |
| 57 | vfprintf(stderr, fmt, ap); |
| 58 | va_end(ap); |
| 59 | fprintf(stderr, "\n"); |
| 60 | exit(1); |
| 61 | } |
| 62 | |
| 63 | void gemu_log(const char *fmt, ...) |
| 64 | { |
| 65 | va_list ap; |
| 66 | |
| 67 | va_start(ap, fmt); |
| 68 | vfprintf(stderr, fmt, ap); |
| 69 | va_end(ap); |
| 70 | } |
| 71 | |
| 72 | void cpu_outb(CPUState *env, int addr, int val) |
| 73 | { |
| 74 | fprintf(stderr, "outb: port=0x%04x, data=%02x\n", addr, val); |
| 75 | } |
| 76 | |
| 77 | void cpu_outw(CPUState *env, int addr, int val) |
| 78 | { |
| 79 | fprintf(stderr, "outw: port=0x%04x, data=%04x\n", addr, val); |
| 80 | } |
| 81 | |
| 82 | void cpu_outl(CPUState *env, int addr, int val) |
| 83 | { |
| 84 | fprintf(stderr, "outl: port=0x%04x, data=%08x\n", addr, val); |
| 85 | } |
| 86 | |
| 87 | int cpu_inb(CPUState *env, int addr) |
| 88 | { |
| 89 | fprintf(stderr, "inb: port=0x%04x\n", addr); |
| 90 | return 0; |
| 91 | } |
| 92 | |
| 93 | int cpu_inw(CPUState *env, int addr) |
| 94 | { |
| 95 | fprintf(stderr, "inw: port=0x%04x\n", addr); |
| 96 | return 0; |
| 97 | } |
| 98 | |
| 99 | int cpu_inl(CPUState *env, int addr) |
| 100 | { |
| 101 | fprintf(stderr, "inl: port=0x%04x\n", addr); |
| 102 | return 0; |
| 103 | } |
| 104 | |
| 105 | int cpu_get_pic_interrupt(CPUState *env) |
| 106 | { |
| 107 | return -1; |
| 108 | } |
| 109 | #ifdef TARGET_PPC |
| 110 | |
| 111 | static inline uint64_t cpu_ppc_get_tb (CPUState *env) |
| 112 | { |
| 113 | /* TO FIX */ |
| 114 | return 0; |
| 115 | } |
| 116 | |
| 117 | uint32_t cpu_ppc_load_tbl (CPUState *env) |
| 118 | { |
| 119 | return cpu_ppc_get_tb(env) & 0xFFFFFFFF; |
| 120 | } |
| 121 | |
| 122 | uint32_t cpu_ppc_load_tbu (CPUState *env) |
| 123 | { |
| 124 | return cpu_ppc_get_tb(env) >> 32; |
| 125 | } |
| 126 | |
j_mayer | a062e36 | 2007-09-30 00:38:38 +0000 | [diff] [blame] | 127 | uint32_t cpu_ppc_load_atbl (CPUState *env) |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 128 | { |
j_mayer | a062e36 | 2007-09-30 00:38:38 +0000 | [diff] [blame] | 129 | return cpu_ppc_get_tb(env) & 0xFFFFFFFF; |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 130 | } |
| 131 | |
j_mayer | a062e36 | 2007-09-30 00:38:38 +0000 | [diff] [blame] | 132 | uint32_t cpu_ppc_load_atbu (CPUState *env) |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 133 | { |
j_mayer | a062e36 | 2007-09-30 00:38:38 +0000 | [diff] [blame] | 134 | return cpu_ppc_get_tb(env) >> 32; |
ths | c000997 | 2007-08-19 21:43:54 +0000 | [diff] [blame] | 135 | } |
| 136 | |
| 137 | uint32_t cpu_ppc601_load_rtcu (CPUState *env) |
| 138 | { |
| 139 | cpu_ppc_load_tbu(env); |
| 140 | } |
| 141 | |
| 142 | uint32_t cpu_ppc601_load_rtcl (CPUState *env) |
| 143 | { |
| 144 | return cpu_ppc_load_tbl(env) & 0x3FFFFF80; |
| 145 | } |
| 146 | |
j_mayer | e1833e1 | 2007-09-29 13:06:16 +0000 | [diff] [blame] | 147 | /* XXX: to be fixed */ |
| 148 | int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, target_ulong *valp) |
| 149 | { |
| 150 | return -1; |
| 151 | } |
| 152 | |
| 153 | int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, target_ulong val) |
| 154 | { |
| 155 | return -1; |
| 156 | } |
| 157 | |
| 158 | #define EXCP_DUMP(env, fmt, args...) \ |
| 159 | do { \ |
| 160 | fprintf(stderr, fmt , ##args); \ |
| 161 | cpu_dump_state(env, stderr, fprintf, 0); \ |
| 162 | if (loglevel != 0) { \ |
| 163 | fprintf(logfile, fmt , ##args); \ |
| 164 | cpu_dump_state(env, logfile, fprintf, 0); \ |
| 165 | } \ |
| 166 | } while (0) |
| 167 | |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 168 | void cpu_loop(CPUPPCState *env) |
| 169 | { |
| 170 | int trapnr; |
| 171 | uint32_t ret; |
| 172 | target_siginfo_t info; |
| 173 | |
| 174 | for(;;) { |
| 175 | trapnr = cpu_ppc_exec(env); |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 176 | switch(trapnr) { |
j_mayer | e1833e1 | 2007-09-29 13:06:16 +0000 | [diff] [blame] | 177 | case POWERPC_EXCP_NONE: |
| 178 | /* Just go on */ |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 179 | break; |
j_mayer | e1833e1 | 2007-09-29 13:06:16 +0000 | [diff] [blame] | 180 | case POWERPC_EXCP_CRITICAL: /* Critical input */ |
| 181 | cpu_abort(env, "Critical interrupt while in user mode. " |
| 182 | "Aborting\n"); |
| 183 | break; |
| 184 | case POWERPC_EXCP_MCHECK: /* Machine check exception */ |
| 185 | cpu_abort(env, "Machine check exception while in user mode. " |
| 186 | "Aborting\n"); |
| 187 | break; |
| 188 | case POWERPC_EXCP_DSI: /* Data storage exception */ |
| 189 | #ifndef DAR |
| 190 | /* To deal with multiple qemu header version as host for the darwin-user code */ |
| 191 | # define DAR SPR_DAR |
| 192 | #endif |
| 193 | EXCP_DUMP(env, "Invalid data memory access: 0x" ADDRX "\n", |
| 194 | env->spr[SPR_DAR]); |
| 195 | /* Handle this via the gdb */ |
| 196 | gdb_handlesig (env, SIGSEGV); |
| 197 | |
| 198 | info.si_addr = (void*)env->nip; |
| 199 | queue_signal(info.si_signo, &info); |
| 200 | break; |
| 201 | case POWERPC_EXCP_ISI: /* Instruction storage exception */ |
| 202 | EXCP_DUMP(env, "Invalid instruction fetch: 0x\n" ADDRX "\n", |
| 203 | env->spr[SPR_DAR]); |
| 204 | /* Handle this via the gdb */ |
| 205 | gdb_handlesig (env, SIGSEGV); |
| 206 | |
| 207 | info.si_addr = (void*)(env->nip - 4); |
| 208 | queue_signal(info.si_signo, &info); |
| 209 | break; |
| 210 | case POWERPC_EXCP_EXTERNAL: /* External input */ |
| 211 | cpu_abort(env, "External interrupt while in user mode. " |
| 212 | "Aborting\n"); |
| 213 | break; |
| 214 | case POWERPC_EXCP_ALIGN: /* Alignment exception */ |
| 215 | EXCP_DUMP(env, "Unaligned memory access\n"); |
| 216 | info.si_errno = 0; |
| 217 | info.si_code = BUS_ADRALN; |
| 218 | info.si_addr = (void*)(env->nip - 4); |
| 219 | queue_signal(info.si_signo, &info); |
| 220 | break; |
| 221 | case POWERPC_EXCP_PROGRAM: /* Program exception */ |
| 222 | /* XXX: check this */ |
| 223 | switch (env->error_code & ~0xF) { |
| 224 | case POWERPC_EXCP_FP: |
| 225 | EXCP_DUMP(env, "Floating point program exception\n"); |
| 226 | /* Set FX */ |
j_mayer | e1833e1 | 2007-09-29 13:06:16 +0000 | [diff] [blame] | 227 | info.si_signo = SIGFPE; |
| 228 | info.si_errno = 0; |
| 229 | switch (env->error_code & 0xF) { |
| 230 | case POWERPC_EXCP_FP_OX: |
| 231 | info.si_code = FPE_FLTOVF; |
| 232 | break; |
| 233 | case POWERPC_EXCP_FP_UX: |
| 234 | info.si_code = FPE_FLTUND; |
| 235 | break; |
| 236 | case POWERPC_EXCP_FP_ZX: |
| 237 | case POWERPC_EXCP_FP_VXZDZ: |
| 238 | info.si_code = FPE_FLTDIV; |
| 239 | break; |
| 240 | case POWERPC_EXCP_FP_XX: |
| 241 | info.si_code = FPE_FLTRES; |
| 242 | break; |
| 243 | case POWERPC_EXCP_FP_VXSOFT: |
| 244 | info.si_code = FPE_FLTINV; |
| 245 | break; |
j_mayer | 7c58044 | 2007-10-27 17:54:30 +0000 | [diff] [blame] | 246 | case POWERPC_EXCP_FP_VXSNAN: |
j_mayer | e1833e1 | 2007-09-29 13:06:16 +0000 | [diff] [blame] | 247 | case POWERPC_EXCP_FP_VXISI: |
| 248 | case POWERPC_EXCP_FP_VXIDI: |
| 249 | case POWERPC_EXCP_FP_VXIMZ: |
| 250 | case POWERPC_EXCP_FP_VXVC: |
| 251 | case POWERPC_EXCP_FP_VXSQRT: |
| 252 | case POWERPC_EXCP_FP_VXCVI: |
| 253 | info.si_code = FPE_FLTSUB; |
| 254 | break; |
| 255 | default: |
| 256 | EXCP_DUMP(env, "Unknown floating point exception (%02x)\n", |
| 257 | env->error_code); |
| 258 | break; |
| 259 | } |
| 260 | break; |
| 261 | case POWERPC_EXCP_INVAL: |
| 262 | EXCP_DUMP(env, "Invalid instruction\n"); |
| 263 | info.si_signo = SIGILL; |
| 264 | info.si_errno = 0; |
| 265 | switch (env->error_code & 0xF) { |
| 266 | case POWERPC_EXCP_INVAL_INVAL: |
| 267 | info.si_code = ILL_ILLOPC; |
| 268 | break; |
| 269 | case POWERPC_EXCP_INVAL_LSWX: |
| 270 | info.si_code = ILL_ILLOPN; |
| 271 | break; |
| 272 | case POWERPC_EXCP_INVAL_SPR: |
| 273 | info.si_code = ILL_PRVREG; |
| 274 | break; |
| 275 | case POWERPC_EXCP_INVAL_FP: |
| 276 | info.si_code = ILL_COPROC; |
| 277 | break; |
| 278 | default: |
| 279 | EXCP_DUMP(env, "Unknown invalid operation (%02x)\n", |
| 280 | env->error_code & 0xF); |
| 281 | info.si_code = ILL_ILLADR; |
| 282 | break; |
| 283 | } |
| 284 | /* Handle this via the gdb */ |
| 285 | gdb_handlesig (env, SIGSEGV); |
| 286 | break; |
| 287 | case POWERPC_EXCP_PRIV: |
| 288 | EXCP_DUMP(env, "Privilege violation\n"); |
| 289 | info.si_signo = SIGILL; |
| 290 | info.si_errno = 0; |
| 291 | switch (env->error_code & 0xF) { |
| 292 | case POWERPC_EXCP_PRIV_OPC: |
| 293 | info.si_code = ILL_PRVOPC; |
| 294 | break; |
| 295 | case POWERPC_EXCP_PRIV_REG: |
| 296 | info.si_code = ILL_PRVREG; |
| 297 | break; |
| 298 | default: |
| 299 | EXCP_DUMP(env, "Unknown privilege violation (%02x)\n", |
| 300 | env->error_code & 0xF); |
| 301 | info.si_code = ILL_PRVOPC; |
| 302 | break; |
| 303 | } |
| 304 | break; |
| 305 | case POWERPC_EXCP_TRAP: |
| 306 | cpu_abort(env, "Tried to call a TRAP\n"); |
| 307 | break; |
| 308 | default: |
| 309 | /* Should not happen ! */ |
| 310 | cpu_abort(env, "Unknown program exception (%02x)\n", |
| 311 | env->error_code); |
| 312 | break; |
| 313 | } |
| 314 | info.si_addr = (void*)(env->nip - 4); |
| 315 | queue_signal(info.si_signo, &info); |
| 316 | break; |
| 317 | case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */ |
| 318 | EXCP_DUMP(env, "No floating point allowed\n"); |
| 319 | info.si_signo = SIGILL; |
| 320 | info.si_errno = 0; |
| 321 | info.si_code = ILL_COPROC; |
| 322 | info.si_addr = (void*)(env->nip - 4); |
| 323 | queue_signal(info.si_signo, &info); |
| 324 | break; |
| 325 | case POWERPC_EXCP_SYSCALL: /* System call exception */ |
| 326 | cpu_abort(env, "Syscall exception while in user mode. " |
| 327 | "Aborting\n"); |
| 328 | break; |
| 329 | case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */ |
| 330 | EXCP_DUMP(env, "No APU instruction allowed\n"); |
| 331 | info.si_signo = SIGILL; |
| 332 | info.si_errno = 0; |
| 333 | info.si_code = ILL_COPROC; |
| 334 | info.si_addr = (void*)(env->nip - 4); |
| 335 | queue_signal(info.si_signo, &info); |
| 336 | break; |
| 337 | case POWERPC_EXCP_DECR: /* Decrementer exception */ |
| 338 | cpu_abort(env, "Decrementer interrupt while in user mode. " |
| 339 | "Aborting\n"); |
| 340 | break; |
| 341 | case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */ |
| 342 | cpu_abort(env, "Fix interval timer interrupt while in user mode. " |
| 343 | "Aborting\n"); |
| 344 | break; |
| 345 | case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */ |
| 346 | cpu_abort(env, "Watchdog timer interrupt while in user mode. " |
| 347 | "Aborting\n"); |
| 348 | break; |
| 349 | case POWERPC_EXCP_DTLB: /* Data TLB error */ |
| 350 | cpu_abort(env, "Data TLB exception while in user mode. " |
| 351 | "Aborting\n"); |
| 352 | break; |
| 353 | case POWERPC_EXCP_ITLB: /* Instruction TLB error */ |
| 354 | cpu_abort(env, "Instruction TLB exception while in user mode. " |
| 355 | "Aborting\n"); |
| 356 | break; |
| 357 | case POWERPC_EXCP_DEBUG: /* Debug interrupt */ |
| 358 | gdb_handlesig (env, SIGTRAP); |
| 359 | break; |
j_mayer | e1833e1 | 2007-09-29 13:06:16 +0000 | [diff] [blame] | 360 | case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */ |
| 361 | EXCP_DUMP(env, "No SPE/floating-point instruction allowed\n"); |
| 362 | info.si_signo = SIGILL; |
| 363 | info.si_errno = 0; |
| 364 | info.si_code = ILL_COPROC; |
| 365 | info.si_addr = (void*)(env->nip - 4); |
| 366 | queue_signal(info.si_signo, &info); |
| 367 | break; |
| 368 | case POWERPC_EXCP_EFPDI: /* Embedded floating-point data IRQ */ |
| 369 | cpu_abort(env, "Embedded floating-point data IRQ not handled\n"); |
| 370 | break; |
| 371 | case POWERPC_EXCP_EFPRI: /* Embedded floating-point round IRQ */ |
| 372 | cpu_abort(env, "Embedded floating-point round IRQ not handled\n"); |
| 373 | break; |
| 374 | case POWERPC_EXCP_EPERFM: /* Embedded performance monitor IRQ */ |
| 375 | cpu_abort(env, "Performance monitor exception not handled\n"); |
| 376 | break; |
| 377 | case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */ |
| 378 | cpu_abort(env, "Doorbell interrupt while in user mode. " |
| 379 | "Aborting\n"); |
| 380 | break; |
| 381 | case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */ |
| 382 | cpu_abort(env, "Doorbell critical interrupt while in user mode. " |
| 383 | "Aborting\n"); |
| 384 | break; |
j_mayer | e1833e1 | 2007-09-29 13:06:16 +0000 | [diff] [blame] | 385 | case POWERPC_EXCP_RESET: /* System reset exception */ |
| 386 | cpu_abort(env, "Reset interrupt while in user mode. " |
| 387 | "Aborting\n"); |
| 388 | break; |
j_mayer | e1833e1 | 2007-09-29 13:06:16 +0000 | [diff] [blame] | 389 | case POWERPC_EXCP_DSEG: /* Data segment exception */ |
| 390 | cpu_abort(env, "Data segment exception while in user mode. " |
| 391 | "Aborting\n"); |
| 392 | break; |
| 393 | case POWERPC_EXCP_ISEG: /* Instruction segment exception */ |
| 394 | cpu_abort(env, "Instruction segment exception " |
| 395 | "while in user mode. Aborting\n"); |
| 396 | break; |
j_mayer | e1833e1 | 2007-09-29 13:06:16 +0000 | [diff] [blame] | 397 | case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */ |
| 398 | cpu_abort(env, "Hypervisor decrementer interrupt " |
| 399 | "while in user mode. Aborting\n"); |
| 400 | break; |
j_mayer | e1833e1 | 2007-09-29 13:06:16 +0000 | [diff] [blame] | 401 | case POWERPC_EXCP_TRACE: /* Trace exception */ |
| 402 | /* Nothing to do: |
| 403 | * we use this exception to emulate step-by-step execution mode. |
| 404 | */ |
| 405 | break; |
j_mayer | e1833e1 | 2007-09-29 13:06:16 +0000 | [diff] [blame] | 406 | case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */ |
| 407 | cpu_abort(env, "Hypervisor data storage exception " |
| 408 | "while in user mode. Aborting\n"); |
| 409 | break; |
| 410 | case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */ |
| 411 | cpu_abort(env, "Hypervisor instruction storage exception " |
| 412 | "while in user mode. Aborting\n"); |
| 413 | break; |
| 414 | case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */ |
| 415 | cpu_abort(env, "Hypervisor data segment exception " |
| 416 | "while in user mode. Aborting\n"); |
| 417 | break; |
| 418 | case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */ |
| 419 | cpu_abort(env, "Hypervisor instruction segment exception " |
| 420 | "while in user mode. Aborting\n"); |
| 421 | break; |
j_mayer | e1833e1 | 2007-09-29 13:06:16 +0000 | [diff] [blame] | 422 | case POWERPC_EXCP_VPU: /* Vector unavailable exception */ |
| 423 | EXCP_DUMP(env, "No Altivec instructions allowed\n"); |
| 424 | info.si_signo = SIGILL; |
| 425 | info.si_errno = 0; |
| 426 | info.si_code = ILL_COPROC; |
| 427 | info.si_addr = (void*)(env->nip - 4); |
| 428 | queue_signal(info.si_signo, &info); |
| 429 | break; |
| 430 | case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */ |
| 431 | cpu_abort(env, "Programable interval timer interrupt " |
| 432 | "while in user mode. Aborting\n"); |
| 433 | break; |
| 434 | case POWERPC_EXCP_IO: /* IO error exception */ |
| 435 | cpu_abort(env, "IO error exception while in user mode. " |
| 436 | "Aborting\n"); |
| 437 | break; |
| 438 | case POWERPC_EXCP_RUNM: /* Run mode exception */ |
| 439 | cpu_abort(env, "Run mode exception while in user mode. " |
| 440 | "Aborting\n"); |
| 441 | break; |
| 442 | case POWERPC_EXCP_EMUL: /* Emulation trap exception */ |
| 443 | cpu_abort(env, "Emulation trap exception not handled\n"); |
| 444 | break; |
| 445 | case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */ |
| 446 | cpu_abort(env, "Instruction fetch TLB exception " |
| 447 | "while in user-mode. Aborting"); |
| 448 | break; |
| 449 | case POWERPC_EXCP_DLTLB: /* Data load TLB miss */ |
| 450 | cpu_abort(env, "Data load TLB exception while in user-mode. " |
| 451 | "Aborting"); |
| 452 | break; |
| 453 | case POWERPC_EXCP_DSTLB: /* Data store TLB miss */ |
| 454 | cpu_abort(env, "Data store TLB exception while in user-mode. " |
| 455 | "Aborting"); |
| 456 | break; |
| 457 | case POWERPC_EXCP_FPA: /* Floating-point assist exception */ |
| 458 | cpu_abort(env, "Floating-point assist exception not handled\n"); |
| 459 | break; |
| 460 | case POWERPC_EXCP_IABR: /* Instruction address breakpoint */ |
| 461 | cpu_abort(env, "Instruction address breakpoint exception " |
| 462 | "not handled\n"); |
| 463 | break; |
| 464 | case POWERPC_EXCP_SMI: /* System management interrupt */ |
| 465 | cpu_abort(env, "System management interrupt while in user mode. " |
| 466 | "Aborting\n"); |
| 467 | break; |
| 468 | case POWERPC_EXCP_THERM: /* Thermal interrupt */ |
| 469 | cpu_abort(env, "Thermal interrupt interrupt while in user mode. " |
| 470 | "Aborting\n"); |
| 471 | break; |
| 472 | case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */ |
| 473 | cpu_abort(env, "Performance monitor exception not handled\n"); |
| 474 | break; |
| 475 | case POWERPC_EXCP_VPUA: /* Vector assist exception */ |
| 476 | cpu_abort(env, "Vector assist exception not handled\n"); |
| 477 | break; |
| 478 | case POWERPC_EXCP_SOFTP: /* Soft patch exception */ |
| 479 | cpu_abort(env, "Soft patch exception not handled\n"); |
| 480 | break; |
| 481 | case POWERPC_EXCP_MAINT: /* Maintenance exception */ |
| 482 | cpu_abort(env, "Maintenance exception while in user mode. " |
| 483 | "Aborting\n"); |
| 484 | break; |
| 485 | case POWERPC_EXCP_STOP: /* stop translation */ |
| 486 | /* We did invalidate the instruction cache. Go on */ |
| 487 | break; |
| 488 | case POWERPC_EXCP_BRANCH: /* branch instruction: */ |
| 489 | /* We just stopped because of a branch. Go on */ |
| 490 | break; |
| 491 | case POWERPC_EXCP_SYSCALL_USER: |
| 492 | /* system call in user-mode emulation */ |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 493 | /* system call */ |
| 494 | if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0) |
| 495 | ret = do_unix_syscall(env, env->gpr[0]/*, env->gpr[3], env->gpr[4], |
| 496 | env->gpr[5], env->gpr[6], env->gpr[7], |
| 497 | env->gpr[8], env->gpr[9], env->gpr[10]*/); |
| 498 | else if(((int)env->gpr[0])<0) |
| 499 | ret = do_mach_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], |
| 500 | env->gpr[5], env->gpr[6], env->gpr[7], |
| 501 | env->gpr[8], env->gpr[9], env->gpr[10]); |
| 502 | else |
| 503 | ret = do_thread_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], |
| 504 | env->gpr[5], env->gpr[6], env->gpr[7], |
| 505 | env->gpr[8], env->gpr[9], env->gpr[10]); |
| 506 | |
| 507 | /* Unix syscall error signaling */ |
| 508 | if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0) |
| 509 | { |
| 510 | if( (int)ret < 0 ) |
| 511 | env->nip += 0; |
| 512 | else |
| 513 | env->nip += 4; |
| 514 | } |
| 515 | |
| 516 | /* Return value */ |
| 517 | env->gpr[3] = ret; |
| 518 | break; |
j_mayer | 56ba31f | 2007-09-30 15:15:18 +0000 | [diff] [blame] | 519 | case EXCP_INTERRUPT: |
| 520 | /* just indicate that signals should be handled asap */ |
| 521 | break; |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 522 | default: |
j_mayer | e1833e1 | 2007-09-29 13:06:16 +0000 | [diff] [blame] | 523 | cpu_abort(env, "Unknown exception 0x%d. Aborting\n", trapnr); |
| 524 | break; |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 525 | } |
| 526 | process_pending_signals(env); |
| 527 | } |
| 528 | } |
| 529 | #endif |
| 530 | |
| 531 | |
| 532 | #ifdef TARGET_I386 |
| 533 | |
| 534 | /***********************************************************/ |
| 535 | /* CPUX86 core interface */ |
| 536 | |
| 537 | uint64_t cpu_get_tsc(CPUX86State *env) |
| 538 | { |
| 539 | return cpu_get_real_ticks(); |
| 540 | } |
| 541 | |
| 542 | void |
| 543 | write_dt(void *ptr, unsigned long addr, unsigned long limit, |
| 544 | int flags) |
| 545 | { |
| 546 | unsigned int e1, e2; |
| 547 | e1 = (addr << 16) | (limit & 0xffff); |
| 548 | e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); |
| 549 | e2 |= flags; |
| 550 | stl((uint8_t *)ptr, e1); |
| 551 | stl((uint8_t *)ptr + 4, e2); |
| 552 | } |
| 553 | |
| 554 | static void set_gate(void *ptr, unsigned int type, unsigned int dpl, |
| 555 | unsigned long addr, unsigned int sel) |
| 556 | { |
| 557 | unsigned int e1, e2; |
| 558 | e1 = (addr & 0xffff) | (sel << 16); |
| 559 | e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); |
| 560 | stl((uint8_t *)ptr, e1); |
| 561 | stl((uint8_t *)ptr + 4, e2); |
| 562 | } |
| 563 | |
| 564 | #define GDT_TABLE_SIZE 14 |
| 565 | #define LDT_TABLE_SIZE 15 |
| 566 | #define IDT_TABLE_SIZE 256 |
| 567 | #define TSS_SIZE 104 |
| 568 | uint64_t gdt_table[GDT_TABLE_SIZE]; |
| 569 | uint64_t ldt_table[LDT_TABLE_SIZE]; |
| 570 | uint64_t idt_table[IDT_TABLE_SIZE]; |
| 571 | uint32_t tss[TSS_SIZE]; |
| 572 | |
| 573 | /* only dpl matters as we do only user space emulation */ |
| 574 | static void set_idt(int n, unsigned int dpl) |
| 575 | { |
| 576 | set_gate(idt_table + n, 0, dpl, 0, 0); |
| 577 | } |
| 578 | |
| 579 | /* ABI convention: after a syscall if there was an error the CF flag is set */ |
ths | 46ea339 | 2007-01-31 12:08:13 +0000 | [diff] [blame] | 580 | static inline void set_error(CPUX86State *env, int ret) |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 581 | { |
| 582 | if(ret<0) |
| 583 | env->eflags = env->eflags | 0x1; |
| 584 | else |
| 585 | env->eflags &= ~0x1; |
| 586 | env->regs[R_EAX] = ret; |
| 587 | } |
| 588 | |
| 589 | void cpu_loop(CPUX86State *env) |
| 590 | { |
| 591 | int trapnr; |
| 592 | int ret; |
| 593 | uint8_t *pc; |
| 594 | target_siginfo_t info; |
| 595 | |
| 596 | for(;;) { |
| 597 | trapnr = cpu_x86_exec(env); |
| 598 | uint32_t *params = (uint32_t *)env->regs[R_ESP]; |
| 599 | switch(trapnr) { |
| 600 | case 0x79: /* Our commpage hack back door exit is here */ |
| 601 | do_commpage(env, env->eip, *(params + 1), *(params + 2), |
| 602 | *(params + 3), *(params + 4), |
| 603 | *(params + 5), *(params + 6), |
| 604 | *(params + 7), *(params + 8)); |
| 605 | break; |
| 606 | case 0x81: /* mach syscall */ |
| 607 | { |
| 608 | ret = do_mach_syscall(env, env->regs[R_EAX], |
| 609 | *(params + 1), *(params + 2), |
| 610 | *(params + 3), *(params + 4), |
| 611 | *(params + 5), *(params + 6), |
| 612 | *(params + 7), *(params + 8)); |
| 613 | set_error(env, ret); |
| 614 | break; |
| 615 | } |
| 616 | case 0x90: /* unix backdoor */ |
| 617 | { |
| 618 | /* after sysenter, stack is in R_ECX, new eip in R_EDX (sysexit will flip them back)*/ |
| 619 | int saved_stack = env->regs[R_ESP]; |
| 620 | env->regs[R_ESP] = env->regs[R_ECX]; |
| 621 | |
| 622 | ret = do_unix_syscall(env, env->regs[R_EAX]); |
| 623 | |
| 624 | env->regs[R_ECX] = env->regs[R_ESP]; |
| 625 | env->regs[R_ESP] = saved_stack; |
| 626 | |
| 627 | set_error(env, ret); |
| 628 | break; |
| 629 | } |
| 630 | case 0x80: /* unix syscall */ |
| 631 | { |
| 632 | ret = do_unix_syscall(env, env->regs[R_EAX]/*, |
| 633 | *(params + 1), *(params + 2), |
| 634 | *(params + 3), *(params + 4), |
| 635 | *(params + 5), *(params + 6), |
| 636 | *(params + 7), *(params + 8)*/); |
| 637 | set_error(env, ret); |
| 638 | break; |
| 639 | } |
| 640 | case 0x82: /* thread syscall */ |
| 641 | { |
| 642 | ret = do_thread_syscall(env, env->regs[R_EAX], |
| 643 | *(params + 1), *(params + 2), |
| 644 | *(params + 3), *(params + 4), |
| 645 | *(params + 5), *(params + 6), |
| 646 | *(params + 7), *(params + 8)); |
| 647 | set_error(env, ret); |
| 648 | break; |
| 649 | } |
| 650 | case EXCP0B_NOSEG: |
| 651 | case EXCP0C_STACK: |
| 652 | info.si_signo = SIGBUS; |
| 653 | info.si_errno = 0; |
| 654 | info.si_code = BUS_NOOP; |
| 655 | info.si_addr = 0; |
| 656 | gdb_handlesig (env, SIGBUS); |
| 657 | queue_signal(info.si_signo, &info); |
| 658 | break; |
| 659 | case EXCP0D_GPF: |
| 660 | info.si_signo = SIGSEGV; |
| 661 | info.si_errno = 0; |
| 662 | info.si_code = SEGV_NOOP; |
| 663 | info.si_addr = 0; |
| 664 | gdb_handlesig (env, SIGSEGV); |
| 665 | queue_signal(info.si_signo, &info); |
| 666 | break; |
| 667 | case EXCP0E_PAGE: |
| 668 | info.si_signo = SIGSEGV; |
| 669 | info.si_errno = 0; |
| 670 | if (!(env->error_code & 1)) |
| 671 | info.si_code = SEGV_MAPERR; |
| 672 | else |
| 673 | info.si_code = SEGV_ACCERR; |
| 674 | info.si_addr = (void*)env->cr[2]; |
| 675 | gdb_handlesig (env, SIGSEGV); |
| 676 | queue_signal(info.si_signo, &info); |
| 677 | break; |
| 678 | case EXCP00_DIVZ: |
| 679 | /* division by zero */ |
| 680 | info.si_signo = SIGFPE; |
| 681 | info.si_errno = 0; |
| 682 | info.si_code = FPE_INTDIV; |
| 683 | info.si_addr = (void*)env->eip; |
| 684 | gdb_handlesig (env, SIGFPE); |
| 685 | queue_signal(info.si_signo, &info); |
| 686 | break; |
| 687 | case EXCP01_SSTP: |
| 688 | case EXCP03_INT3: |
| 689 | info.si_signo = SIGTRAP; |
| 690 | info.si_errno = 0; |
| 691 | info.si_code = TRAP_BRKPT; |
| 692 | info.si_addr = (void*)env->eip; |
| 693 | gdb_handlesig (env, SIGTRAP); |
| 694 | queue_signal(info.si_signo, &info); |
| 695 | break; |
| 696 | case EXCP04_INTO: |
| 697 | case EXCP05_BOUND: |
| 698 | info.si_signo = SIGSEGV; |
| 699 | info.si_errno = 0; |
| 700 | info.si_code = SEGV_NOOP; |
| 701 | info.si_addr = 0; |
| 702 | gdb_handlesig (env, SIGSEGV); |
| 703 | queue_signal(info.si_signo, &info); |
| 704 | break; |
| 705 | case EXCP06_ILLOP: |
| 706 | info.si_signo = SIGILL; |
| 707 | info.si_errno = 0; |
| 708 | info.si_code = ILL_ILLOPN; |
| 709 | info.si_addr = (void*)env->eip; |
| 710 | gdb_handlesig (env, SIGILL); |
| 711 | queue_signal(info.si_signo, &info); |
| 712 | break; |
| 713 | case EXCP_INTERRUPT: |
| 714 | /* just indicate that signals should be handled asap */ |
| 715 | break; |
| 716 | case EXCP_DEBUG: |
| 717 | { |
| 718 | int sig; |
| 719 | |
| 720 | sig = gdb_handlesig (env, SIGTRAP); |
| 721 | if (sig) |
| 722 | { |
| 723 | info.si_signo = sig; |
| 724 | info.si_errno = 0; |
| 725 | info.si_code = TRAP_BRKPT; |
| 726 | queue_signal(info.si_signo, &info); |
| 727 | } |
| 728 | } |
| 729 | break; |
| 730 | default: |
| 731 | pc = (void*)(env->segs[R_CS].base + env->eip); |
| 732 | fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n", |
| 733 | (long)pc, trapnr); |
| 734 | abort(); |
| 735 | } |
| 736 | process_pending_signals(env); |
| 737 | } |
| 738 | } |
| 739 | #endif |
| 740 | |
| 741 | void usage(void) |
| 742 | { |
| 743 | printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n" |
| 744 | "usage: qemu-" TARGET_ARCH " [-h] [-d opts] [-L path] [-s size] program [arguments...]\n" |
| 745 | "Darwin CPU emulator (compiled for %s emulation)\n" |
| 746 | "\n" |
| 747 | "-h print this help\n" |
bellard | 1e2bed4 | 2007-02-05 19:43:27 +0000 | [diff] [blame] | 748 | "-L path set the %s library path (default='%s')\n" |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 749 | "-s size set the stack size in bytes (default=%ld)\n" |
| 750 | "\n" |
| 751 | "debug options:\n" |
bellard | 1e2bed4 | 2007-02-05 19:43:27 +0000 | [diff] [blame] | 752 | "-d options activate log (logfile='%s')\n" |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 753 | "-g wait for gdb on port 1234\n" |
| 754 | "-p pagesize set the host page size to 'pagesize'\n", |
| 755 | TARGET_ARCH, |
bellard | 1e2bed4 | 2007-02-05 19:43:27 +0000 | [diff] [blame] | 756 | TARGET_ARCH, |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 757 | interp_prefix, |
| 758 | stack_size, |
| 759 | DEBUG_LOGFILE); |
| 760 | _exit(1); |
| 761 | } |
| 762 | |
| 763 | /* XXX: currently only used for async signals (see signal.c) */ |
| 764 | CPUState *global_env; |
| 765 | /* used only if single thread */ |
| 766 | CPUState *cpu_single_env = NULL; |
| 767 | |
| 768 | /* used to free thread contexts */ |
| 769 | TaskState *first_task_state; |
| 770 | |
| 771 | int main(int argc, char **argv) |
| 772 | { |
| 773 | const char *filename; |
| 774 | struct target_pt_regs regs1, *regs = ®s1; |
| 775 | TaskState ts1, *ts = &ts1; |
| 776 | CPUState *env; |
| 777 | int optind; |
| 778 | short use_gdbstub = 0; |
| 779 | const char *r; |
bellard | aaed909 | 2007-11-10 15:15:54 +0000 | [diff] [blame] | 780 | const char *cpu_model; |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 781 | |
| 782 | if (argc <= 1) |
| 783 | usage(); |
| 784 | |
| 785 | /* init debug */ |
| 786 | cpu_set_log_filename(DEBUG_LOGFILE); |
| 787 | |
| 788 | optind = 1; |
| 789 | for(;;) { |
| 790 | if (optind >= argc) |
| 791 | break; |
| 792 | r = argv[optind]; |
| 793 | if (r[0] != '-') |
| 794 | break; |
| 795 | optind++; |
| 796 | r++; |
| 797 | if (!strcmp(r, "-")) { |
| 798 | break; |
| 799 | } else if (!strcmp(r, "d")) { |
| 800 | int mask; |
| 801 | CPULogItem *item; |
| 802 | |
| 803 | if (optind >= argc) |
| 804 | break; |
| 805 | |
| 806 | r = argv[optind++]; |
| 807 | mask = cpu_str_to_log_mask(r); |
| 808 | if (!mask) { |
| 809 | printf("Log items (comma separated):\n"); |
| 810 | for(item = cpu_log_items; item->mask != 0; item++) { |
| 811 | printf("%-10s %s\n", item->name, item->help); |
| 812 | } |
| 813 | exit(1); |
| 814 | } |
| 815 | cpu_set_log(mask); |
| 816 | } else if (!strcmp(r, "s")) { |
| 817 | r = argv[optind++]; |
| 818 | stack_size = strtol(r, (char **)&r, 0); |
| 819 | if (stack_size <= 0) |
| 820 | usage(); |
| 821 | if (*r == 'M') |
| 822 | stack_size *= 1024 * 1024; |
| 823 | else if (*r == 'k' || *r == 'K') |
| 824 | stack_size *= 1024; |
| 825 | } else if (!strcmp(r, "L")) { |
| 826 | interp_prefix = argv[optind++]; |
| 827 | } else if (!strcmp(r, "p")) { |
| 828 | qemu_host_page_size = atoi(argv[optind++]); |
| 829 | if (qemu_host_page_size == 0 || |
| 830 | (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { |
| 831 | fprintf(stderr, "page size must be a power of two\n"); |
| 832 | exit(1); |
| 833 | } |
| 834 | } else |
| 835 | if (!strcmp(r, "g")) { |
| 836 | use_gdbstub = 1; |
j_mayer | 31fca6a | 2007-11-17 01:52:38 +0000 | [diff] [blame] | 837 | } else if (!strcmp(r, "cpu")) { |
| 838 | cpu_model = argv[optind++]; |
| 839 | if (strcmp(cpu_model, "?") == 0) { |
| 840 | /* XXX: implement xxx_cpu_list for targets that still miss it */ |
| 841 | #if defined(cpu_list) |
| 842 | cpu_list(stdout, &fprintf); |
| 843 | #endif |
| 844 | _exit(1); |
| 845 | } |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 846 | } else |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 847 | { |
| 848 | usage(); |
| 849 | } |
| 850 | } |
| 851 | if (optind >= argc) |
| 852 | usage(); |
| 853 | filename = argv[optind]; |
| 854 | |
| 855 | /* Zero out regs */ |
| 856 | memset(regs, 0, sizeof(struct target_pt_regs)); |
| 857 | |
j_mayer | 31fca6a | 2007-11-17 01:52:38 +0000 | [diff] [blame] | 858 | if (cpu_model == NULL) { |
bellard | aaed909 | 2007-11-10 15:15:54 +0000 | [diff] [blame] | 859 | #if defined(TARGET_I386) |
j_mayer | 31fca6a | 2007-11-17 01:52:38 +0000 | [diff] [blame] | 860 | #ifdef TARGET_X86_64 |
| 861 | cpu_model = "qemu64"; |
| 862 | #else |
| 863 | cpu_model = "qemu32"; |
| 864 | #endif |
bellard | aaed909 | 2007-11-10 15:15:54 +0000 | [diff] [blame] | 865 | #elif defined(TARGET_PPC) |
j_mayer | 31fca6a | 2007-11-17 01:52:38 +0000 | [diff] [blame] | 866 | #ifdef TARGET_PPC64 |
| 867 | cpu_model = "970"; |
| 868 | #else |
| 869 | cpu_model = "750"; |
| 870 | #endif |
bellard | aaed909 | 2007-11-10 15:15:54 +0000 | [diff] [blame] | 871 | #else |
| 872 | #error unsupported CPU |
| 873 | #endif |
j_mayer | 31fca6a | 2007-11-17 01:52:38 +0000 | [diff] [blame] | 874 | } |
bellard | aaed909 | 2007-11-10 15:15:54 +0000 | [diff] [blame] | 875 | |
j_mayer | 31fca6a | 2007-11-17 01:52:38 +0000 | [diff] [blame] | 876 | /* NOTE: we need to init the CPU at this stage to get |
| 877 | qemu_host_page_size */ |
bellard | aaed909 | 2007-11-10 15:15:54 +0000 | [diff] [blame] | 878 | env = cpu_init(cpu_model); |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 879 | |
| 880 | printf("Starting %s with qemu\n----------------\n", filename); |
| 881 | |
| 882 | commpage_init(); |
| 883 | |
| 884 | if (mach_exec(filename, argv+optind, environ, regs) != 0) { |
| 885 | printf("Error loading %s\n", filename); |
| 886 | _exit(1); |
| 887 | } |
| 888 | |
| 889 | syscall_init(); |
| 890 | signal_init(); |
| 891 | global_env = env; |
| 892 | |
| 893 | /* build Task State */ |
| 894 | memset(ts, 0, sizeof(TaskState)); |
| 895 | env->opaque = ts; |
| 896 | ts->used = 1; |
| 897 | env->user_mode_only = 1; |
| 898 | |
| 899 | #if defined(TARGET_I386) |
| 900 | cpu_x86_set_cpl(env, 3); |
| 901 | |
| 902 | env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK; |
| 903 | env->hflags |= HF_PE_MASK; |
| 904 | |
| 905 | if (env->cpuid_features & CPUID_SSE) { |
| 906 | env->cr[4] |= CR4_OSFXSR_MASK; |
| 907 | env->hflags |= HF_OSFXSR_MASK; |
| 908 | } |
| 909 | |
| 910 | /* flags setup : we activate the IRQs by default as in user mode */ |
| 911 | env->eflags |= IF_MASK; |
| 912 | |
| 913 | /* darwin register setup */ |
| 914 | env->regs[R_EAX] = regs->eax; |
| 915 | env->regs[R_EBX] = regs->ebx; |
| 916 | env->regs[R_ECX] = regs->ecx; |
| 917 | env->regs[R_EDX] = regs->edx; |
| 918 | env->regs[R_ESI] = regs->esi; |
| 919 | env->regs[R_EDI] = regs->edi; |
| 920 | env->regs[R_EBP] = regs->ebp; |
| 921 | env->regs[R_ESP] = regs->esp; |
| 922 | env->eip = regs->eip; |
| 923 | |
| 924 | /* Darwin LDT setup */ |
| 925 | /* 2 - User code segment |
| 926 | 3 - User data segment |
| 927 | 4 - User cthread */ |
| 928 | bzero(ldt_table, LDT_TABLE_SIZE * sizeof(ldt_table[0])); |
| 929 | env->ldt.base = (uint32_t) ldt_table; |
| 930 | env->ldt.limit = sizeof(ldt_table) - 1; |
| 931 | |
| 932 | write_dt(ldt_table + 2, 0, 0xfffff, |
| 933 | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
| 934 | (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); |
| 935 | write_dt(ldt_table + 3, 0, 0xfffff, |
| 936 | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
| 937 | (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); |
| 938 | write_dt(ldt_table + 4, 0, 0xfffff, |
| 939 | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
| 940 | (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); |
| 941 | |
| 942 | /* Darwin GDT setup. |
| 943 | * has changed a lot between old Darwin/x86 (pre-Mac Intel) and Mac OS X/x86, |
| 944 | now everything is done via int 0x81(mach) int 0x82 (thread) and sysenter/sysexit(unix) */ |
| 945 | bzero(gdt_table, sizeof(gdt_table)); |
| 946 | env->gdt.base = (uint32_t)gdt_table; |
| 947 | env->gdt.limit = sizeof(gdt_table) - 1; |
| 948 | |
| 949 | /* Set up a back door to handle sysenter syscalls (unix) */ |
| 950 | char * syscallbackdoor = malloc(64); |
| 951 | page_set_flags((int)syscallbackdoor, (int)syscallbackdoor + 64, PROT_EXEC | PROT_READ | PAGE_VALID); |
| 952 | |
| 953 | int i = 0; |
| 954 | syscallbackdoor[i++] = 0xcd; |
| 955 | syscallbackdoor[i++] = 0x90; /* int 0x90 */ |
| 956 | syscallbackdoor[i++] = 0x0F; |
| 957 | syscallbackdoor[i++] = 0x35; /* sysexit */ |
| 958 | |
| 959 | /* Darwin sysenter/sysexit setup */ |
| 960 | env->sysenter_cs = 0x1; //XXX |
| 961 | env->sysenter_eip = (int)syscallbackdoor; |
| 962 | env->sysenter_esp = (int)malloc(64); |
| 963 | |
| 964 | /* Darwin TSS setup |
| 965 | This must match up with GDT[4] */ |
| 966 | env->tr.base = (uint32_t) tss; |
| 967 | env->tr.limit = sizeof(tss) - 1; |
| 968 | env->tr.flags = DESC_P_MASK | (0x9 << DESC_TYPE_SHIFT); |
| 969 | stw(tss + 2, 0x10); // ss0 = 0x10 = GDT[2] = Kernel Data Segment |
| 970 | |
| 971 | /* Darwin interrupt setup */ |
| 972 | bzero(idt_table, sizeof(idt_table)); |
| 973 | env->idt.base = (uint32_t) idt_table; |
| 974 | env->idt.limit = sizeof(idt_table) - 1; |
| 975 | set_idt(0, 0); |
| 976 | set_idt(1, 0); |
| 977 | set_idt(2, 0); |
| 978 | set_idt(3, 3); |
| 979 | set_idt(4, 3); |
| 980 | set_idt(5, 3); |
| 981 | set_idt(6, 0); |
| 982 | set_idt(7, 0); |
| 983 | set_idt(8, 0); |
| 984 | set_idt(9, 0); |
| 985 | set_idt(10, 0); |
| 986 | set_idt(11, 0); |
| 987 | set_idt(12, 0); |
| 988 | set_idt(13, 0); |
| 989 | set_idt(14, 0); |
| 990 | set_idt(15, 0); |
| 991 | set_idt(16, 0); |
| 992 | set_idt(17, 0); |
| 993 | set_idt(18, 0); |
| 994 | set_idt(19, 0); |
| 995 | /* Syscalls are done via |
| 996 | int 0x80 (unix) (rarely used) |
| 997 | int 0x81 (mach) |
| 998 | int 0x82 (thread) |
| 999 | int 0x83 (diag) (not handled here) |
| 1000 | sysenter/sysexit (unix) -> we redirect that to int 0x90 */ |
| 1001 | set_idt(0x79, 3); /* Commpage hack, here is our backdoor interrupt */ |
| 1002 | set_idt(0x80, 3); /* Unix Syscall */ |
| 1003 | set_idt(0x81, 3); /* Mach Syscalls */ |
| 1004 | set_idt(0x82, 3); /* thread Syscalls */ |
| 1005 | |
bellard | 1e2bed4 | 2007-02-05 19:43:27 +0000 | [diff] [blame] | 1006 | set_idt(0x90, 3); /* qemu-darwin-user's Unix syscalls backdoor */ |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 1007 | |
| 1008 | |
| 1009 | cpu_x86_load_seg(env, R_CS, __USER_CS); |
| 1010 | cpu_x86_load_seg(env, R_DS, __USER_DS); |
| 1011 | cpu_x86_load_seg(env, R_ES, __USER_DS); |
| 1012 | cpu_x86_load_seg(env, R_SS, __USER_DS); |
| 1013 | cpu_x86_load_seg(env, R_FS, __USER_DS); |
| 1014 | cpu_x86_load_seg(env, R_GS, __USER_DS); |
| 1015 | |
| 1016 | #elif defined(TARGET_PPC) |
| 1017 | { |
| 1018 | int i; |
j_mayer | 31fca6a | 2007-11-17 01:52:38 +0000 | [diff] [blame] | 1019 | |
| 1020 | #if defined(TARGET_PPC64) |
| 1021 | #if defined(TARGET_ABI32) |
| 1022 | env->msr &= ~((target_ulong)1 << MSR_SF); |
| 1023 | #else |
| 1024 | env->msr |= (target_ulong)1 << MSR_SF; |
| 1025 | #endif |
| 1026 | #endif |
ths | 831b782 | 2007-01-18 20:06:33 +0000 | [diff] [blame] | 1027 | env->nip = regs->nip; |
| 1028 | for(i = 0; i < 32; i++) { |
| 1029 | env->gpr[i] = regs->gpr[i]; |
| 1030 | } |
| 1031 | } |
| 1032 | #else |
| 1033 | #error unsupported target CPU |
| 1034 | #endif |
| 1035 | |
| 1036 | if (use_gdbstub) { |
| 1037 | printf("Waiting for gdb Connection on port 1234...\n"); |
| 1038 | gdbserver_start (1234); |
| 1039 | gdb_handlesig(env, 0); |
| 1040 | } |
| 1041 | |
| 1042 | cpu_loop(env); |
| 1043 | /* never exits */ |
| 1044 | return 0; |
| 1045 | } |