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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 | ||
fc0d96b4 BS |
34 | |
35 | #include "envlist.h" | |
36 | ||
84778508 BS |
37 | #define DEBUG_LOGFILE "/tmp/qemu.log" |
38 | ||
1b530a6d AJ |
39 | int singlestep; |
40 | ||
84778508 BS |
41 | static const char *interp_prefix = CONFIG_QEMU_PREFIX; |
42 | const char *qemu_uname_release = CONFIG_UNAME_RELEASE; | |
43 | extern char **environ; | |
44 | ||
45 | /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so | |
46 | we allocate a bigger stack. Need a better solution, for example | |
47 | by remapping the process stack directly at the right place */ | |
48 | unsigned long x86_stack_size = 512 * 1024; | |
49 | ||
50 | void gemu_log(const char *fmt, ...) | |
51 | { | |
52 | va_list ap; | |
53 | ||
54 | va_start(ap, fmt); | |
55 | vfprintf(stderr, fmt, ap); | |
56 | va_end(ap); | |
57 | } | |
9399f095 | 58 | |
31fc12df BS |
59 | #if defined(TARGET_I386) |
60 | int cpu_get_pic_interrupt(CPUState *env) | |
61 | { | |
62 | return -1; | |
63 | } | |
64 | #endif | |
65 | ||
9399f095 BS |
66 | /* These are no-ops because we are not threadsafe. */ |
67 | static inline void cpu_exec_start(CPUState *env) | |
68 | { | |
69 | } | |
70 | ||
71 | static inline void cpu_exec_end(CPUState *env) | |
72 | { | |
73 | } | |
74 | ||
75 | static inline void start_exclusive(void) | |
76 | { | |
77 | } | |
78 | ||
79 | static inline void end_exclusive(void) | |
80 | { | |
81 | } | |
82 | ||
83 | void fork_start(void) | |
84 | { | |
85 | } | |
86 | ||
87 | void fork_end(int child) | |
88 | { | |
89 | if (child) { | |
90 | gdbserver_fork(thread_env); | |
91 | } | |
92 | } | |
93 | ||
94 | void cpu_list_lock(void) | |
95 | { | |
96 | } | |
97 | ||
98 | void cpu_list_unlock(void) | |
99 | { | |
100 | } | |
101 | ||
31fc12df BS |
102 | #ifdef TARGET_I386 |
103 | /***********************************************************/ | |
104 | /* CPUX86 core interface */ | |
105 | ||
106 | void cpu_smm_update(CPUState *env) | |
107 | { | |
108 | } | |
109 | ||
110 | uint64_t cpu_get_tsc(CPUX86State *env) | |
111 | { | |
112 | return cpu_get_real_ticks(); | |
113 | } | |
114 | ||
115 | static void write_dt(void *ptr, unsigned long addr, unsigned long limit, | |
116 | int flags) | |
117 | { | |
118 | unsigned int e1, e2; | |
119 | uint32_t *p; | |
120 | e1 = (addr << 16) | (limit & 0xffff); | |
121 | e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); | |
122 | e2 |= flags; | |
123 | p = ptr; | |
124 | p[0] = tswap32(e1); | |
125 | p[1] = tswap32(e2); | |
126 | } | |
127 | ||
128 | static uint64_t *idt_table; | |
129 | #ifdef TARGET_X86_64 | |
130 | static void set_gate64(void *ptr, unsigned int type, unsigned int dpl, | |
131 | uint64_t addr, unsigned int sel) | |
132 | { | |
133 | uint32_t *p, e1, e2; | |
134 | e1 = (addr & 0xffff) | (sel << 16); | |
135 | e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); | |
136 | p = ptr; | |
137 | p[0] = tswap32(e1); | |
138 | p[1] = tswap32(e2); | |
139 | p[2] = tswap32(addr >> 32); | |
140 | p[3] = 0; | |
141 | } | |
142 | /* only dpl matters as we do only user space emulation */ | |
143 | static void set_idt(int n, unsigned int dpl) | |
144 | { | |
145 | set_gate64(idt_table + n * 2, 0, dpl, 0, 0); | |
146 | } | |
147 | #else | |
148 | static void set_gate(void *ptr, unsigned int type, unsigned int dpl, | |
149 | uint32_t addr, unsigned int sel) | |
150 | { | |
151 | uint32_t *p, e1, e2; | |
152 | e1 = (addr & 0xffff) | (sel << 16); | |
153 | e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); | |
154 | p = ptr; | |
155 | p[0] = tswap32(e1); | |
156 | p[1] = tswap32(e2); | |
157 | } | |
158 | ||
159 | /* only dpl matters as we do only user space emulation */ | |
160 | static void set_idt(int n, unsigned int dpl) | |
161 | { | |
162 | set_gate(idt_table + n, 0, dpl, 0, 0); | |
163 | } | |
164 | #endif | |
165 | ||
166 | void cpu_loop(CPUX86State *env, enum BSDType bsd_type) | |
167 | { | |
168 | int trapnr; | |
169 | abi_ulong pc; | |
170 | //target_siginfo_t info; | |
171 | ||
172 | for(;;) { | |
173 | trapnr = cpu_x86_exec(env); | |
174 | switch(trapnr) { | |
175 | case 0x80: | |
176 | /* syscall from int $0x80 */ | |
177 | env->regs[R_EAX] = do_openbsd_syscall(env, | |
178 | env->regs[R_EAX], | |
179 | env->regs[R_EBX], | |
180 | env->regs[R_ECX], | |
181 | env->regs[R_EDX], | |
182 | env->regs[R_ESI], | |
183 | env->regs[R_EDI], | |
184 | env->regs[R_EBP]); | |
185 | break; | |
186 | #ifndef TARGET_ABI32 | |
187 | case EXCP_SYSCALL: | |
188 | /* linux syscall from syscall intruction */ | |
189 | env->regs[R_EAX] = do_openbsd_syscall(env, | |
190 | env->regs[R_EAX], | |
191 | env->regs[R_EDI], | |
192 | env->regs[R_ESI], | |
193 | env->regs[R_EDX], | |
194 | env->regs[10], | |
195 | env->regs[8], | |
196 | env->regs[9]); | |
197 | env->eip = env->exception_next_eip; | |
198 | break; | |
199 | #endif | |
200 | #if 0 | |
201 | case EXCP0B_NOSEG: | |
202 | case EXCP0C_STACK: | |
203 | info.si_signo = SIGBUS; | |
204 | info.si_errno = 0; | |
205 | info.si_code = TARGET_SI_KERNEL; | |
206 | info._sifields._sigfault._addr = 0; | |
207 | queue_signal(env, info.si_signo, &info); | |
208 | break; | |
209 | case EXCP0D_GPF: | |
210 | /* XXX: potential problem if ABI32 */ | |
211 | #ifndef TARGET_X86_64 | |
212 | if (env->eflags & VM_MASK) { | |
213 | handle_vm86_fault(env); | |
214 | } else | |
215 | #endif | |
216 | { | |
217 | info.si_signo = SIGSEGV; | |
218 | info.si_errno = 0; | |
219 | info.si_code = TARGET_SI_KERNEL; | |
220 | info._sifields._sigfault._addr = 0; | |
221 | queue_signal(env, info.si_signo, &info); | |
222 | } | |
223 | break; | |
224 | case EXCP0E_PAGE: | |
225 | info.si_signo = SIGSEGV; | |
226 | info.si_errno = 0; | |
227 | if (!(env->error_code & 1)) | |
228 | info.si_code = TARGET_SEGV_MAPERR; | |
229 | else | |
230 | info.si_code = TARGET_SEGV_ACCERR; | |
231 | info._sifields._sigfault._addr = env->cr[2]; | |
232 | queue_signal(env, info.si_signo, &info); | |
233 | break; | |
234 | case EXCP00_DIVZ: | |
235 | #ifndef TARGET_X86_64 | |
236 | if (env->eflags & VM_MASK) { | |
237 | handle_vm86_trap(env, trapnr); | |
238 | } else | |
239 | #endif | |
240 | { | |
241 | /* division by zero */ | |
242 | info.si_signo = SIGFPE; | |
243 | info.si_errno = 0; | |
244 | info.si_code = TARGET_FPE_INTDIV; | |
245 | info._sifields._sigfault._addr = env->eip; | |
246 | queue_signal(env, info.si_signo, &info); | |
247 | } | |
248 | break; | |
249 | case EXCP01_DB: | |
250 | case EXCP03_INT3: | |
251 | #ifndef TARGET_X86_64 | |
252 | if (env->eflags & VM_MASK) { | |
253 | handle_vm86_trap(env, trapnr); | |
254 | } else | |
255 | #endif | |
256 | { | |
257 | info.si_signo = SIGTRAP; | |
258 | info.si_errno = 0; | |
259 | if (trapnr == EXCP01_DB) { | |
260 | info.si_code = TARGET_TRAP_BRKPT; | |
261 | info._sifields._sigfault._addr = env->eip; | |
262 | } else { | |
263 | info.si_code = TARGET_SI_KERNEL; | |
264 | info._sifields._sigfault._addr = 0; | |
265 | } | |
266 | queue_signal(env, info.si_signo, &info); | |
267 | } | |
268 | break; | |
269 | case EXCP04_INTO: | |
270 | case EXCP05_BOUND: | |
271 | #ifndef TARGET_X86_64 | |
272 | if (env->eflags & VM_MASK) { | |
273 | handle_vm86_trap(env, trapnr); | |
274 | } else | |
275 | #endif | |
276 | { | |
277 | info.si_signo = SIGSEGV; | |
278 | info.si_errno = 0; | |
279 | info.si_code = TARGET_SI_KERNEL; | |
280 | info._sifields._sigfault._addr = 0; | |
281 | queue_signal(env, info.si_signo, &info); | |
282 | } | |
283 | break; | |
284 | case EXCP06_ILLOP: | |
285 | info.si_signo = SIGILL; | |
286 | info.si_errno = 0; | |
287 | info.si_code = TARGET_ILL_ILLOPN; | |
288 | info._sifields._sigfault._addr = env->eip; | |
289 | queue_signal(env, info.si_signo, &info); | |
290 | break; | |
291 | #endif | |
292 | case EXCP_INTERRUPT: | |
293 | /* just indicate that signals should be handled asap */ | |
294 | break; | |
295 | #if 0 | |
296 | case EXCP_DEBUG: | |
297 | { | |
298 | int sig; | |
299 | ||
300 | sig = gdb_handlesig (env, TARGET_SIGTRAP); | |
301 | if (sig) | |
302 | { | |
303 | info.si_signo = sig; | |
304 | info.si_errno = 0; | |
305 | info.si_code = TARGET_TRAP_BRKPT; | |
306 | queue_signal(env, info.si_signo, &info); | |
307 | } | |
308 | } | |
309 | break; | |
310 | #endif | |
311 | default: | |
312 | pc = env->segs[R_CS].base + env->eip; | |
313 | fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n", | |
314 | (long)pc, trapnr); | |
315 | abort(); | |
316 | } | |
317 | process_pending_signals(env); | |
318 | } | |
319 | } | |
320 | #endif | |
321 | ||
84778508 BS |
322 | #ifdef TARGET_SPARC |
323 | #define SPARC64_STACK_BIAS 2047 | |
324 | ||
325 | //#define DEBUG_WIN | |
326 | /* WARNING: dealing with register windows _is_ complicated. More info | |
327 | can be found at http://www.sics.se/~psm/sparcstack.html */ | |
328 | static inline int get_reg_index(CPUSPARCState *env, int cwp, int index) | |
329 | { | |
330 | index = (index + cwp * 16) % (16 * env->nwindows); | |
331 | /* wrap handling : if cwp is on the last window, then we use the | |
332 | registers 'after' the end */ | |
333 | if (index < 8 && env->cwp == env->nwindows - 1) | |
334 | index += 16 * env->nwindows; | |
335 | return index; | |
336 | } | |
337 | ||
338 | /* save the register window 'cwp1' */ | |
339 | static inline void save_window_offset(CPUSPARCState *env, int cwp1) | |
340 | { | |
341 | unsigned int i; | |
342 | abi_ulong sp_ptr; | |
343 | ||
344 | sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)]; | |
345 | #ifdef TARGET_SPARC64 | |
346 | if (sp_ptr & 3) | |
347 | sp_ptr += SPARC64_STACK_BIAS; | |
348 | #endif | |
349 | #if defined(DEBUG_WIN) | |
350 | printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n", | |
351 | sp_ptr, cwp1); | |
352 | #endif | |
353 | for(i = 0; i < 16; i++) { | |
354 | /* FIXME - what to do if put_user() fails? */ | |
355 | put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr); | |
356 | sp_ptr += sizeof(abi_ulong); | |
357 | } | |
358 | } | |
359 | ||
360 | static void save_window(CPUSPARCState *env) | |
361 | { | |
362 | #ifndef TARGET_SPARC64 | |
363 | unsigned int new_wim; | |
364 | new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) & | |
365 | ((1LL << env->nwindows) - 1); | |
366 | save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2)); | |
367 | env->wim = new_wim; | |
368 | #else | |
369 | save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2)); | |
370 | env->cansave++; | |
371 | env->canrestore--; | |
372 | #endif | |
373 | } | |
374 | ||
375 | static void restore_window(CPUSPARCState *env) | |
376 | { | |
377 | #ifndef TARGET_SPARC64 | |
378 | unsigned int new_wim; | |
379 | #endif | |
380 | unsigned int i, cwp1; | |
381 | abi_ulong sp_ptr; | |
382 | ||
383 | #ifndef TARGET_SPARC64 | |
384 | new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) & | |
385 | ((1LL << env->nwindows) - 1); | |
386 | #endif | |
387 | ||
388 | /* restore the invalid window */ | |
389 | cwp1 = cpu_cwp_inc(env, env->cwp + 1); | |
390 | sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)]; | |
391 | #ifdef TARGET_SPARC64 | |
392 | if (sp_ptr & 3) | |
393 | sp_ptr += SPARC64_STACK_BIAS; | |
394 | #endif | |
395 | #if defined(DEBUG_WIN) | |
396 | printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n", | |
397 | sp_ptr, cwp1); | |
398 | #endif | |
399 | for(i = 0; i < 16; i++) { | |
400 | /* FIXME - what to do if get_user() fails? */ | |
401 | get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr); | |
402 | sp_ptr += sizeof(abi_ulong); | |
403 | } | |
404 | #ifdef TARGET_SPARC64 | |
405 | env->canrestore++; | |
406 | if (env->cleanwin < env->nwindows - 1) | |
407 | env->cleanwin++; | |
408 | env->cansave--; | |
409 | #else | |
410 | env->wim = new_wim; | |
411 | #endif | |
412 | } | |
413 | ||
414 | static void flush_windows(CPUSPARCState *env) | |
415 | { | |
416 | int offset, cwp1; | |
417 | ||
418 | offset = 1; | |
419 | for(;;) { | |
420 | /* if restore would invoke restore_window(), then we can stop */ | |
421 | cwp1 = cpu_cwp_inc(env, env->cwp + offset); | |
422 | #ifndef TARGET_SPARC64 | |
423 | if (env->wim & (1 << cwp1)) | |
424 | break; | |
425 | #else | |
426 | if (env->canrestore == 0) | |
427 | break; | |
428 | env->cansave++; | |
429 | env->canrestore--; | |
430 | #endif | |
431 | save_window_offset(env, cwp1); | |
432 | offset++; | |
433 | } | |
434 | cwp1 = cpu_cwp_inc(env, env->cwp + 1); | |
435 | #ifndef TARGET_SPARC64 | |
436 | /* set wim so that restore will reload the registers */ | |
437 | env->wim = 1 << cwp1; | |
438 | #endif | |
439 | #if defined(DEBUG_WIN) | |
440 | printf("flush_windows: nb=%d\n", offset - 1); | |
441 | #endif | |
442 | } | |
443 | ||
444 | void cpu_loop(CPUSPARCState *env, enum BSDType bsd_type) | |
445 | { | |
446 | int trapnr, ret, syscall_nr; | |
447 | //target_siginfo_t info; | |
448 | ||
449 | while (1) { | |
450 | trapnr = cpu_sparc_exec (env); | |
451 | ||
452 | switch (trapnr) { | |
77b9435f BS |
453 | #ifndef TARGET_SPARC64 |
454 | case 0x80: | |
455 | #else | |
84778508 | 456 | case 0x100: |
77b9435f | 457 | #endif |
84778508 | 458 | syscall_nr = env->gregs[1]; |
84778508 BS |
459 | if (bsd_type == target_freebsd) |
460 | ret = do_freebsd_syscall(env, syscall_nr, | |
461 | env->regwptr[0], env->regwptr[1], | |
462 | env->regwptr[2], env->regwptr[3], | |
463 | env->regwptr[4], env->regwptr[5]); | |
464 | else if (bsd_type == target_netbsd) | |
465 | ret = do_netbsd_syscall(env, syscall_nr, | |
466 | env->regwptr[0], env->regwptr[1], | |
467 | env->regwptr[2], env->regwptr[3], | |
468 | env->regwptr[4], env->regwptr[5]); | |
cdba95bd BS |
469 | else { //if (bsd_type == target_openbsd) |
470 | #if defined(TARGET_SPARC64) | |
471 | syscall_nr &= ~(TARGET_OPENBSD_SYSCALL_G7RFLAG | | |
472 | TARGET_OPENBSD_SYSCALL_G2RFLAG); | |
473 | #endif | |
84778508 BS |
474 | ret = do_openbsd_syscall(env, syscall_nr, |
475 | env->regwptr[0], env->regwptr[1], | |
476 | env->regwptr[2], env->regwptr[3], | |
477 | env->regwptr[4], env->regwptr[5]); | |
cdba95bd | 478 | } |
84778508 BS |
479 | if ((unsigned int)ret >= (unsigned int)(-515)) { |
480 | #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) | |
481 | env->xcc |= PSR_CARRY; | |
482 | #else | |
483 | env->psr |= PSR_CARRY; | |
484 | #endif | |
485 | } else { | |
486 | #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) | |
487 | env->xcc &= ~PSR_CARRY; | |
488 | #else | |
489 | env->psr &= ~PSR_CARRY; | |
490 | #endif | |
491 | } | |
492 | env->regwptr[0] = ret; | |
493 | /* next instruction */ | |
cdba95bd BS |
494 | #if defined(TARGET_SPARC64) |
495 | if (bsd_type == target_openbsd && | |
496 | env->gregs[1] & TARGET_OPENBSD_SYSCALL_G2RFLAG) { | |
84778508 BS |
497 | env->pc = env->gregs[2]; |
498 | env->npc = env->pc + 4; | |
cdba95bd BS |
499 | } else if (bsd_type == target_openbsd && |
500 | env->gregs[1] & TARGET_OPENBSD_SYSCALL_G7RFLAG) { | |
84778508 BS |
501 | env->pc = env->gregs[7]; |
502 | env->npc = env->pc + 4; | |
503 | } else { | |
504 | env->pc = env->npc; | |
505 | env->npc = env->npc + 4; | |
506 | } | |
507 | #else | |
508 | env->pc = env->npc; | |
509 | env->npc = env->npc + 4; | |
510 | #endif | |
511 | break; | |
512 | case 0x83: /* flush windows */ | |
513 | #ifdef TARGET_ABI32 | |
514 | case 0x103: | |
515 | #endif | |
516 | flush_windows(env); | |
517 | /* next instruction */ | |
518 | env->pc = env->npc; | |
519 | env->npc = env->npc + 4; | |
520 | break; | |
521 | #ifndef TARGET_SPARC64 | |
522 | case TT_WIN_OVF: /* window overflow */ | |
523 | save_window(env); | |
524 | break; | |
525 | case TT_WIN_UNF: /* window underflow */ | |
526 | restore_window(env); | |
527 | break; | |
528 | case TT_TFAULT: | |
529 | case TT_DFAULT: | |
530 | #if 0 | |
531 | { | |
532 | info.si_signo = SIGSEGV; | |
533 | info.si_errno = 0; | |
534 | /* XXX: check env->error_code */ | |
535 | info.si_code = TARGET_SEGV_MAPERR; | |
536 | info._sifields._sigfault._addr = env->mmuregs[4]; | |
537 | queue_signal(env, info.si_signo, &info); | |
538 | } | |
539 | #endif | |
540 | break; | |
541 | #else | |
542 | case TT_SPILL: /* window overflow */ | |
543 | save_window(env); | |
544 | break; | |
545 | case TT_FILL: /* window underflow */ | |
546 | restore_window(env); | |
547 | break; | |
548 | case TT_TFAULT: | |
549 | case TT_DFAULT: | |
550 | #if 0 | |
551 | { | |
552 | info.si_signo = SIGSEGV; | |
553 | info.si_errno = 0; | |
554 | /* XXX: check env->error_code */ | |
555 | info.si_code = TARGET_SEGV_MAPERR; | |
556 | if (trapnr == TT_DFAULT) | |
557 | info._sifields._sigfault._addr = env->dmmuregs[4]; | |
558 | else | |
559 | info._sifields._sigfault._addr = env->tsptr->tpc; | |
560 | //queue_signal(env, info.si_signo, &info); | |
561 | } | |
562 | #endif | |
563 | break; | |
564 | #endif | |
565 | case EXCP_INTERRUPT: | |
566 | /* just indicate that signals should be handled asap */ | |
567 | break; | |
568 | case EXCP_DEBUG: | |
569 | { | |
570 | int sig; | |
571 | ||
572 | sig = gdb_handlesig (env, TARGET_SIGTRAP); | |
573 | #if 0 | |
574 | if (sig) | |
575 | { | |
576 | info.si_signo = sig; | |
577 | info.si_errno = 0; | |
578 | info.si_code = TARGET_TRAP_BRKPT; | |
579 | //queue_signal(env, info.si_signo, &info); | |
580 | } | |
581 | #endif | |
582 | } | |
583 | break; | |
584 | default: | |
585 | printf ("Unhandled trap: 0x%x\n", trapnr); | |
586 | cpu_dump_state(env, stderr, fprintf, 0); | |
587 | exit (1); | |
588 | } | |
589 | process_pending_signals (env); | |
590 | } | |
591 | } | |
592 | ||
593 | #endif | |
594 | ||
595 | static void usage(void) | |
596 | { | |
597 | printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n" | |
598 | "usage: qemu-" TARGET_ARCH " [options] program [arguments...]\n" | |
599 | "BSD CPU emulator (compiled for %s emulation)\n" | |
600 | "\n" | |
601 | "Standard options:\n" | |
602 | "-h print this help\n" | |
603 | "-g port wait gdb connection to port\n" | |
604 | "-L path set the elf interpreter prefix (default=%s)\n" | |
605 | "-s size set the stack size in bytes (default=%ld)\n" | |
606 | "-cpu model select CPU (-cpu ? for list)\n" | |
607 | "-drop-ld-preload drop LD_PRELOAD for target process\n" | |
fc0d96b4 BS |
608 | "-E var=value sets/modifies targets environment variable(s)\n" |
609 | "-U var unsets targets environment variable(s)\n" | |
84778508 BS |
610 | "-bsd type select emulated BSD type FreeBSD/NetBSD/OpenBSD (default)\n" |
611 | "\n" | |
612 | "Debug options:\n" | |
613 | "-d options activate log (logfile=%s)\n" | |
614 | "-p pagesize set the host page size to 'pagesize'\n" | |
1b530a6d | 615 | "-singlestep always run in singlestep mode\n" |
84778508 BS |
616 | "-strace log system calls\n" |
617 | "\n" | |
618 | "Environment variables:\n" | |
619 | "QEMU_STRACE Print system calls and arguments similar to the\n" | |
620 | " 'strace' program. Enable by setting to any value.\n" | |
fc0d96b4 BS |
621 | "You can use -E and -U options to set/unset environment variables\n" |
622 | "for target process. It is possible to provide several variables\n" | |
623 | "by repeating the option. For example:\n" | |
624 | " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n" | |
625 | "Note that if you provide several changes to single variable\n" | |
626 | "last change will stay in effect.\n" | |
84778508 BS |
627 | , |
628 | TARGET_ARCH, | |
629 | interp_prefix, | |
630 | x86_stack_size, | |
631 | DEBUG_LOGFILE); | |
2d18e637 | 632 | exit(1); |
84778508 BS |
633 | } |
634 | ||
635 | THREAD CPUState *thread_env; | |
636 | ||
637 | /* Assumes contents are already zeroed. */ | |
638 | void init_task_state(TaskState *ts) | |
639 | { | |
640 | int i; | |
641 | ||
642 | ts->used = 1; | |
643 | ts->first_free = ts->sigqueue_table; | |
644 | for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) { | |
645 | ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1]; | |
646 | } | |
647 | ts->sigqueue_table[i].next = NULL; | |
648 | } | |
649 | ||
650 | int main(int argc, char **argv) | |
651 | { | |
652 | const char *filename; | |
653 | const char *cpu_model; | |
654 | struct target_pt_regs regs1, *regs = ®s1; | |
655 | struct image_info info1, *info = &info1; | |
656 | TaskState ts1, *ts = &ts1; | |
657 | CPUState *env; | |
658 | int optind; | |
659 | const char *r; | |
660 | int gdbstub_port = 0; | |
fc0d96b4 BS |
661 | char **target_environ, **wrk; |
662 | envlist_t *envlist = NULL; | |
84778508 BS |
663 | enum BSDType bsd_type = target_openbsd; |
664 | ||
665 | if (argc <= 1) | |
666 | usage(); | |
667 | ||
668 | /* init debug */ | |
669 | cpu_set_log_filename(DEBUG_LOGFILE); | |
670 | ||
fc0d96b4 BS |
671 | if ((envlist = envlist_create()) == NULL) { |
672 | (void) fprintf(stderr, "Unable to allocate envlist\n"); | |
673 | exit(1); | |
674 | } | |
675 | ||
676 | /* add current environment into the list */ | |
677 | for (wrk = environ; *wrk != NULL; wrk++) { | |
678 | (void) envlist_setenv(envlist, *wrk); | |
679 | } | |
680 | ||
84778508 BS |
681 | cpu_model = NULL; |
682 | optind = 1; | |
683 | for(;;) { | |
684 | if (optind >= argc) | |
685 | break; | |
686 | r = argv[optind]; | |
687 | if (r[0] != '-') | |
688 | break; | |
689 | optind++; | |
690 | r++; | |
691 | if (!strcmp(r, "-")) { | |
692 | break; | |
693 | } else if (!strcmp(r, "d")) { | |
694 | int mask; | |
695 | const CPULogItem *item; | |
696 | ||
697 | if (optind >= argc) | |
698 | break; | |
699 | ||
700 | r = argv[optind++]; | |
701 | mask = cpu_str_to_log_mask(r); | |
702 | if (!mask) { | |
703 | printf("Log items (comma separated):\n"); | |
704 | for(item = cpu_log_items; item->mask != 0; item++) { | |
705 | printf("%-10s %s\n", item->name, item->help); | |
706 | } | |
707 | exit(1); | |
708 | } | |
709 | cpu_set_log(mask); | |
fc0d96b4 BS |
710 | } else if (!strcmp(r, "E")) { |
711 | r = argv[optind++]; | |
712 | if (envlist_setenv(envlist, r) != 0) | |
713 | usage(); | |
714 | } else if (!strcmp(r, "U")) { | |
715 | r = argv[optind++]; | |
716 | if (envlist_unsetenv(envlist, r) != 0) | |
717 | usage(); | |
84778508 BS |
718 | } else if (!strcmp(r, "s")) { |
719 | r = argv[optind++]; | |
720 | x86_stack_size = strtol(r, (char **)&r, 0); | |
721 | if (x86_stack_size <= 0) | |
722 | usage(); | |
723 | if (*r == 'M') | |
724 | x86_stack_size *= 1024 * 1024; | |
725 | else if (*r == 'k' || *r == 'K') | |
726 | x86_stack_size *= 1024; | |
727 | } else if (!strcmp(r, "L")) { | |
728 | interp_prefix = argv[optind++]; | |
729 | } else if (!strcmp(r, "p")) { | |
730 | qemu_host_page_size = atoi(argv[optind++]); | |
731 | if (qemu_host_page_size == 0 || | |
732 | (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { | |
733 | fprintf(stderr, "page size must be a power of two\n"); | |
734 | exit(1); | |
735 | } | |
736 | } else if (!strcmp(r, "g")) { | |
737 | gdbstub_port = atoi(argv[optind++]); | |
738 | } else if (!strcmp(r, "r")) { | |
739 | qemu_uname_release = argv[optind++]; | |
740 | } else if (!strcmp(r, "cpu")) { | |
741 | cpu_model = argv[optind++]; | |
742 | if (strcmp(cpu_model, "?") == 0) { | |
743 | /* XXX: implement xxx_cpu_list for targets that still miss it */ | |
744 | #if defined(cpu_list) | |
745 | cpu_list(stdout, &fprintf); | |
746 | #endif | |
2d18e637 | 747 | exit(1); |
84778508 BS |
748 | } |
749 | } else if (!strcmp(r, "drop-ld-preload")) { | |
fc0d96b4 | 750 | (void) envlist_unsetenv(envlist, "LD_PRELOAD"); |
84778508 BS |
751 | } else if (!strcmp(r, "bsd")) { |
752 | if (!strcasecmp(argv[optind], "freebsd")) { | |
753 | bsd_type = target_freebsd; | |
754 | } else if (!strcasecmp(argv[optind], "netbsd")) { | |
755 | bsd_type = target_netbsd; | |
756 | } else if (!strcasecmp(argv[optind], "openbsd")) { | |
757 | bsd_type = target_openbsd; | |
758 | } else { | |
759 | usage(); | |
760 | } | |
761 | optind++; | |
1b530a6d AJ |
762 | } else if (!strcmp(r, "singlestep")) { |
763 | singlestep = 1; | |
84778508 BS |
764 | } else if (!strcmp(r, "strace")) { |
765 | do_strace = 1; | |
766 | } else | |
767 | { | |
768 | usage(); | |
769 | } | |
770 | } | |
771 | if (optind >= argc) | |
772 | usage(); | |
773 | filename = argv[optind]; | |
774 | ||
775 | /* Zero out regs */ | |
776 | memset(regs, 0, sizeof(struct target_pt_regs)); | |
777 | ||
778 | /* Zero out image_info */ | |
779 | memset(info, 0, sizeof(struct image_info)); | |
780 | ||
781 | /* Scan interp_prefix dir for replacement files. */ | |
782 | init_paths(interp_prefix); | |
783 | ||
784 | if (cpu_model == NULL) { | |
31fc12df BS |
785 | #if defined(TARGET_I386) |
786 | #ifdef TARGET_X86_64 | |
787 | cpu_model = "qemu64"; | |
788 | #else | |
789 | cpu_model = "qemu32"; | |
790 | #endif | |
791 | #elif defined(TARGET_SPARC) | |
84778508 BS |
792 | #ifdef TARGET_SPARC64 |
793 | cpu_model = "TI UltraSparc II"; | |
794 | #else | |
795 | cpu_model = "Fujitsu MB86904"; | |
796 | #endif | |
797 | #else | |
798 | cpu_model = "any"; | |
799 | #endif | |
800 | } | |
801 | cpu_exec_init_all(0); | |
802 | /* NOTE: we need to init the CPU at this stage to get | |
803 | qemu_host_page_size */ | |
804 | env = cpu_init(cpu_model); | |
805 | if (!env) { | |
806 | fprintf(stderr, "Unable to find CPU definition\n"); | |
807 | exit(1); | |
808 | } | |
809 | thread_env = env; | |
810 | ||
811 | if (getenv("QEMU_STRACE")) { | |
812 | do_strace = 1; | |
813 | } | |
814 | ||
fc0d96b4 BS |
815 | target_environ = envlist_to_environ(envlist, NULL); |
816 | envlist_free(envlist); | |
817 | ||
84778508 BS |
818 | |
819 | if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) { | |
820 | printf("Error loading %s\n", filename); | |
821 | _exit(1); | |
822 | } | |
823 | ||
824 | for (wrk = target_environ; *wrk; wrk++) { | |
825 | free(*wrk); | |
826 | } | |
827 | ||
828 | free(target_environ); | |
829 | ||
2e77eac6 BS |
830 | if (qemu_log_enabled()) { |
831 | log_page_dump(); | |
832 | ||
833 | qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk); | |
834 | qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code); | |
835 | qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n", | |
836 | info->start_code); | |
837 | qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n", | |
838 | info->start_data); | |
839 | qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data); | |
840 | qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n", | |
841 | info->start_stack); | |
842 | qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk); | |
843 | qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry); | |
844 | } | |
84778508 BS |
845 | |
846 | target_set_brk(info->brk); | |
847 | syscall_init(); | |
848 | signal_init(); | |
849 | ||
850 | /* build Task State */ | |
851 | memset(ts, 0, sizeof(TaskState)); | |
852 | init_task_state(ts); | |
853 | ts->info = info; | |
854 | env->opaque = ts; | |
84778508 | 855 | |
31fc12df BS |
856 | #if defined(TARGET_I386) |
857 | cpu_x86_set_cpl(env, 3); | |
858 | ||
859 | env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK; | |
860 | env->hflags |= HF_PE_MASK; | |
861 | if (env->cpuid_features & CPUID_SSE) { | |
862 | env->cr[4] |= CR4_OSFXSR_MASK; | |
863 | env->hflags |= HF_OSFXSR_MASK; | |
864 | } | |
865 | #ifndef TARGET_ABI32 | |
866 | /* enable 64 bit mode if possible */ | |
867 | if (!(env->cpuid_ext2_features & CPUID_EXT2_LM)) { | |
868 | fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n"); | |
869 | exit(1); | |
870 | } | |
871 | env->cr[4] |= CR4_PAE_MASK; | |
872 | env->efer |= MSR_EFER_LMA | MSR_EFER_LME; | |
873 | env->hflags |= HF_LMA_MASK; | |
874 | #endif | |
875 | ||
876 | /* flags setup : we activate the IRQs by default as in user mode */ | |
877 | env->eflags |= IF_MASK; | |
878 | ||
879 | /* linux register setup */ | |
880 | #ifndef TARGET_ABI32 | |
881 | env->regs[R_EAX] = regs->rax; | |
882 | env->regs[R_EBX] = regs->rbx; | |
883 | env->regs[R_ECX] = regs->rcx; | |
884 | env->regs[R_EDX] = regs->rdx; | |
885 | env->regs[R_ESI] = regs->rsi; | |
886 | env->regs[R_EDI] = regs->rdi; | |
887 | env->regs[R_EBP] = regs->rbp; | |
888 | env->regs[R_ESP] = regs->rsp; | |
889 | env->eip = regs->rip; | |
890 | #else | |
891 | env->regs[R_EAX] = regs->eax; | |
892 | env->regs[R_EBX] = regs->ebx; | |
893 | env->regs[R_ECX] = regs->ecx; | |
894 | env->regs[R_EDX] = regs->edx; | |
895 | env->regs[R_ESI] = regs->esi; | |
896 | env->regs[R_EDI] = regs->edi; | |
897 | env->regs[R_EBP] = regs->ebp; | |
898 | env->regs[R_ESP] = regs->esp; | |
899 | env->eip = regs->eip; | |
900 | #endif | |
901 | ||
902 | /* linux interrupt setup */ | |
903 | #ifndef TARGET_ABI32 | |
904 | env->idt.limit = 511; | |
905 | #else | |
906 | env->idt.limit = 255; | |
907 | #endif | |
908 | env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1), | |
909 | PROT_READ|PROT_WRITE, | |
910 | MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); | |
911 | idt_table = g2h(env->idt.base); | |
912 | set_idt(0, 0); | |
913 | set_idt(1, 0); | |
914 | set_idt(2, 0); | |
915 | set_idt(3, 3); | |
916 | set_idt(4, 3); | |
917 | set_idt(5, 0); | |
918 | set_idt(6, 0); | |
919 | set_idt(7, 0); | |
920 | set_idt(8, 0); | |
921 | set_idt(9, 0); | |
922 | set_idt(10, 0); | |
923 | set_idt(11, 0); | |
924 | set_idt(12, 0); | |
925 | set_idt(13, 0); | |
926 | set_idt(14, 0); | |
927 | set_idt(15, 0); | |
928 | set_idt(16, 0); | |
929 | set_idt(17, 0); | |
930 | set_idt(18, 0); | |
931 | set_idt(19, 0); | |
932 | set_idt(0x80, 3); | |
933 | ||
934 | /* linux segment setup */ | |
935 | { | |
936 | uint64_t *gdt_table; | |
937 | env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES, | |
938 | PROT_READ|PROT_WRITE, | |
939 | MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); | |
940 | env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1; | |
941 | gdt_table = g2h(env->gdt.base); | |
942 | #ifdef TARGET_ABI32 | |
943 | write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, | |
944 | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | | |
945 | (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); | |
946 | #else | |
947 | /* 64 bit code segment */ | |
948 | write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff, | |
949 | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | | |
950 | DESC_L_MASK | | |
951 | (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); | |
952 | #endif | |
953 | write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff, | |
954 | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | | |
955 | (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); | |
956 | } | |
957 | ||
958 | cpu_x86_load_seg(env, R_CS, __USER_CS); | |
959 | cpu_x86_load_seg(env, R_SS, __USER_DS); | |
960 | #ifdef TARGET_ABI32 | |
961 | cpu_x86_load_seg(env, R_DS, __USER_DS); | |
962 | cpu_x86_load_seg(env, R_ES, __USER_DS); | |
963 | cpu_x86_load_seg(env, R_FS, __USER_DS); | |
964 | cpu_x86_load_seg(env, R_GS, __USER_DS); | |
965 | /* This hack makes Wine work... */ | |
966 | env->segs[R_FS].selector = 0; | |
967 | #else | |
968 | cpu_x86_load_seg(env, R_DS, 0); | |
969 | cpu_x86_load_seg(env, R_ES, 0); | |
970 | cpu_x86_load_seg(env, R_FS, 0); | |
971 | cpu_x86_load_seg(env, R_GS, 0); | |
972 | #endif | |
973 | #elif defined(TARGET_SPARC) | |
84778508 BS |
974 | { |
975 | int i; | |
976 | env->pc = regs->pc; | |
977 | env->npc = regs->npc; | |
978 | env->y = regs->y; | |
979 | for(i = 0; i < 8; i++) | |
980 | env->gregs[i] = regs->u_regs[i]; | |
981 | for(i = 0; i < 8; i++) | |
982 | env->regwptr[i] = regs->u_regs[i + 8]; | |
983 | } | |
984 | #else | |
985 | #error unsupported target CPU | |
986 | #endif | |
987 | ||
988 | if (gdbstub_port) { | |
989 | gdbserver_start (gdbstub_port); | |
990 | gdb_handlesig(env, 0); | |
991 | } | |
992 | cpu_loop(env, bsd_type); | |
993 | /* never exits */ | |
994 | return 0; | |
995 | } |