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19#include "qemu/osdep.h"
20#include "qemu-version.h"
21#include <machine/trap.h>
22
23#include "qapi/error.h"
24#include "qemu.h"
25#include "qemu/config-file.h"
26#include "qemu/path.h"
27#include "qemu/help_option.h"
28
29#include "cpu.h"
30#include "exec/exec-all.h"
31#include "tcg.h"
32#include "qemu/timer.h"
33#include "qemu/envlist.h"
34#include "exec/log.h"
35#include "trace/control.h"
36#include "glib-compat.h"
37
38int singlestep;
39unsigned long mmap_min_addr;
40unsigned long guest_base;
41int have_guest_base;
42unsigned long reserved_va;
43
44static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
45const char *qemu_uname_release;
46extern char **environ;
47enum BSDType bsd_type;
48
49
50
51
52unsigned long x86_stack_size = 512 * 1024;
53
54void gemu_log(const char *fmt, ...)
55{
56 va_list ap;
57
58 va_start(ap, fmt);
59 vfprintf(stderr, fmt, ap);
60 va_end(ap);
61}
62
63#if defined(TARGET_I386)
64int cpu_get_pic_interrupt(CPUX86State *env)
65{
66 return -1;
67}
68#endif
69
70void fork_start(void)
71{
72}
73
74void fork_end(int child)
75{
76 if (child) {
77 gdbserver_fork(thread_cpu);
78 }
79}
80
81#ifdef TARGET_I386
82
83
84
85uint64_t cpu_get_tsc(CPUX86State *env)
86{
87 return cpu_get_host_ticks();
88}
89
90static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
91 int flags)
92{
93 unsigned int e1, e2;
94 uint32_t *p;
95 e1 = (addr << 16) | (limit & 0xffff);
96 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
97 e2 |= flags;
98 p = ptr;
99 p[0] = tswap32(e1);
100 p[1] = tswap32(e2);
101}
102
103static uint64_t *idt_table;
104#ifdef TARGET_X86_64
105static void set_gate64(void *ptr, unsigned int type, unsigned int dpl,
106 uint64_t addr, unsigned int sel)
107{
108 uint32_t *p, e1, e2;
109 e1 = (addr & 0xffff) | (sel << 16);
110 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
111 p = ptr;
112 p[0] = tswap32(e1);
113 p[1] = tswap32(e2);
114 p[2] = tswap32(addr >> 32);
115 p[3] = 0;
116}
117
118static void set_idt(int n, unsigned int dpl)
119{
120 set_gate64(idt_table + n * 2, 0, dpl, 0, 0);
121}
122#else
123static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
124 uint32_t addr, unsigned int sel)
125{
126 uint32_t *p, e1, e2;
127 e1 = (addr & 0xffff) | (sel << 16);
128 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
129 p = ptr;
130 p[0] = tswap32(e1);
131 p[1] = tswap32(e2);
132}
133
134
135static void set_idt(int n, unsigned int dpl)
136{
137 set_gate(idt_table + n, 0, dpl, 0, 0);
138}
139#endif
140
141void cpu_loop(CPUX86State *env)
142{
143 X86CPU *cpu = x86_env_get_cpu(env);
144 CPUState *cs = CPU(cpu);
145 int trapnr;
146 abi_ulong pc;
147
148
149 for(;;) {
150 cpu_exec_start(cs);
151 trapnr = cpu_exec(cs);
152 cpu_exec_end(cs);
153 process_queued_cpu_work(cs);
154
155 switch(trapnr) {
156 case 0x80:
157
158 if (bsd_type == target_freebsd) {
159 abi_ulong params = (abi_ulong) env->regs[R_ESP] +
160 sizeof(int32_t);
161 int32_t syscall_nr = env->regs[R_EAX];
162 int32_t arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8;
163
164 if (syscall_nr == TARGET_FREEBSD_NR_syscall) {
165 get_user_s32(syscall_nr, params);
166 params += sizeof(int32_t);
167 } else if (syscall_nr == TARGET_FREEBSD_NR___syscall) {
168 get_user_s32(syscall_nr, params);
169 params += sizeof(int64_t);
170 }
171 get_user_s32(arg1, params);
172 params += sizeof(int32_t);
173 get_user_s32(arg2, params);
174 params += sizeof(int32_t);
175 get_user_s32(arg3, params);
176 params += sizeof(int32_t);
177 get_user_s32(arg4, params);
178 params += sizeof(int32_t);
179 get_user_s32(arg5, params);
180 params += sizeof(int32_t);
181 get_user_s32(arg6, params);
182 params += sizeof(int32_t);
183 get_user_s32(arg7, params);
184 params += sizeof(int32_t);
185 get_user_s32(arg8, params);
186 env->regs[R_EAX] = do_freebsd_syscall(env,
187 syscall_nr,
188 arg1,
189 arg2,
190 arg3,
191 arg4,
192 arg5,
193 arg6,
194 arg7,
195 arg8);
196 } else {
197 env->regs[R_EAX] = do_openbsd_syscall(env,
198 env->regs[R_EAX],
199 env->regs[R_EBX],
200 env->regs[R_ECX],
201 env->regs[R_EDX],
202 env->regs[R_ESI],
203 env->regs[R_EDI],
204 env->regs[R_EBP]);
205 }
206 if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
207 env->regs[R_EAX] = -env->regs[R_EAX];
208 env->eflags |= CC_C;
209 } else {
210 env->eflags &= ~CC_C;
211 }
212 break;
213#ifndef TARGET_ABI32
214 case EXCP_SYSCALL:
215
216 if (bsd_type == target_freebsd)
217 env->regs[R_EAX] = do_freebsd_syscall(env,
218 env->regs[R_EAX],
219 env->regs[R_EDI],
220 env->regs[R_ESI],
221 env->regs[R_EDX],
222 env->regs[R_ECX],
223 env->regs[8],
224 env->regs[9], 0, 0);
225 else {
226 env->regs[R_EAX] = do_openbsd_syscall(env,
227 env->regs[R_EAX],
228 env->regs[R_EDI],
229 env->regs[R_ESI],
230 env->regs[R_EDX],
231 env->regs[10],
232 env->regs[8],
233 env->regs[9]);
234 }
235 env->eip = env->exception_next_eip;
236 if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
237 env->regs[R_EAX] = -env->regs[R_EAX];
238 env->eflags |= CC_C;
239 } else {
240 env->eflags &= ~CC_C;
241 }
242 break;
243#endif
244#if 0
245 case EXCP0B_NOSEG:
246 case EXCP0C_STACK:
247 info.si_signo = SIGBUS;
248 info.si_errno = 0;
249 info.si_code = TARGET_SI_KERNEL;
250 info._sifields._sigfault._addr = 0;
251 queue_signal(env, info.si_signo, &info);
252 break;
253 case EXCP0D_GPF:
254
255#ifndef TARGET_X86_64
256 if (env->eflags & VM_MASK) {
257 handle_vm86_fault(env);
258 } else
259#endif
260 {
261 info.si_signo = SIGSEGV;
262 info.si_errno = 0;
263 info.si_code = TARGET_SI_KERNEL;
264 info._sifields._sigfault._addr = 0;
265 queue_signal(env, info.si_signo, &info);
266 }
267 break;
268 case EXCP0E_PAGE:
269 info.si_signo = SIGSEGV;
270 info.si_errno = 0;
271 if (!(env->error_code & 1))
272 info.si_code = TARGET_SEGV_MAPERR;
273 else
274 info.si_code = TARGET_SEGV_ACCERR;
275 info._sifields._sigfault._addr = env->cr[2];
276 queue_signal(env, info.si_signo, &info);
277 break;
278 case EXCP00_DIVZ:
279#ifndef TARGET_X86_64
280 if (env->eflags & VM_MASK) {
281 handle_vm86_trap(env, trapnr);
282 } else
283#endif
284 {
285
286 info.si_signo = SIGFPE;
287 info.si_errno = 0;
288 info.si_code = TARGET_FPE_INTDIV;
289 info._sifields._sigfault._addr = env->eip;
290 queue_signal(env, info.si_signo, &info);
291 }
292 break;
293 case EXCP01_DB:
294 case EXCP03_INT3:
295#ifndef TARGET_X86_64
296 if (env->eflags & VM_MASK) {
297 handle_vm86_trap(env, trapnr);
298 } else
299#endif
300 {
301 info.si_signo = SIGTRAP;
302 info.si_errno = 0;
303 if (trapnr == EXCP01_DB) {
304 info.si_code = TARGET_TRAP_BRKPT;
305 info._sifields._sigfault._addr = env->eip;
306 } else {
307 info.si_code = TARGET_SI_KERNEL;
308 info._sifields._sigfault._addr = 0;
309 }
310 queue_signal(env, info.si_signo, &info);
311 }
312 break;
313 case EXCP04_INTO:
314 case EXCP05_BOUND:
315#ifndef TARGET_X86_64
316 if (env->eflags & VM_MASK) {
317 handle_vm86_trap(env, trapnr);
318 } else
319#endif
320 {
321 info.si_signo = SIGSEGV;
322 info.si_errno = 0;
323 info.si_code = TARGET_SI_KERNEL;
324 info._sifields._sigfault._addr = 0;
325 queue_signal(env, info.si_signo, &info);
326 }
327 break;
328 case EXCP06_ILLOP:
329 info.si_signo = SIGILL;
330 info.si_errno = 0;
331 info.si_code = TARGET_ILL_ILLOPN;
332 info._sifields._sigfault._addr = env->eip;
333 queue_signal(env, info.si_signo, &info);
334 break;
335#endif
336 case EXCP_INTERRUPT:
337
338 break;
339#if 0
340 case EXCP_DEBUG:
341 {
342 int sig;
343
344 sig = gdb_handlesig (env, TARGET_SIGTRAP);
345 if (sig)
346 {
347 info.si_signo = sig;
348 info.si_errno = 0;
349 info.si_code = TARGET_TRAP_BRKPT;
350 queue_signal(env, info.si_signo, &info);
351 }
352 }
353 break;
354#endif
355 default:
356 pc = env->segs[R_CS].base + env->eip;
357 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
358 (long)pc, trapnr);
359 abort();
360 }
361 process_pending_signals(env);
362 }
363}
364#endif
365
366#ifdef TARGET_SPARC
367#define SPARC64_STACK_BIAS 2047
368
369
370
371
372static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
373{
374 index = (index + cwp * 16) % (16 * env->nwindows);
375
376
377 if (index < 8 && env->cwp == env->nwindows - 1)
378 index += 16 * env->nwindows;
379 return index;
380}
381
382
383static inline void save_window_offset(CPUSPARCState *env, int cwp1)
384{
385 unsigned int i;
386 abi_ulong sp_ptr;
387
388 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
389#ifdef TARGET_SPARC64
390 if (sp_ptr & 3)
391 sp_ptr += SPARC64_STACK_BIAS;
392#endif
393#if defined(DEBUG_WIN)
394 printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n",
395 sp_ptr, cwp1);
396#endif
397 for(i = 0; i < 16; i++) {
398
399 put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
400 sp_ptr += sizeof(abi_ulong);
401 }
402}
403
404static void save_window(CPUSPARCState *env)
405{
406#ifndef TARGET_SPARC64
407 unsigned int new_wim;
408 new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) &
409 ((1LL << env->nwindows) - 1);
410 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
411 env->wim = new_wim;
412#else
413 save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
414 env->cansave++;
415 env->canrestore--;
416#endif
417}
418
419static void restore_window(CPUSPARCState *env)
420{
421#ifndef TARGET_SPARC64
422 unsigned int new_wim;
423#endif
424 unsigned int i, cwp1;
425 abi_ulong sp_ptr;
426
427#ifndef TARGET_SPARC64
428 new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) &
429 ((1LL << env->nwindows) - 1);
430#endif
431
432
433 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
434 sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
435#ifdef TARGET_SPARC64
436 if (sp_ptr & 3)
437 sp_ptr += SPARC64_STACK_BIAS;
438#endif
439#if defined(DEBUG_WIN)
440 printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n",
441 sp_ptr, cwp1);
442#endif
443 for(i = 0; i < 16; i++) {
444
445 get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
446 sp_ptr += sizeof(abi_ulong);
447 }
448#ifdef TARGET_SPARC64
449 env->canrestore++;
450 if (env->cleanwin < env->nwindows - 1)
451 env->cleanwin++;
452 env->cansave--;
453#else
454 env->wim = new_wim;
455#endif
456}
457
458static void flush_windows(CPUSPARCState *env)
459{
460 int offset, cwp1;
461
462 offset = 1;
463 for(;;) {
464
465 cwp1 = cpu_cwp_inc(env, env->cwp + offset);
466#ifndef TARGET_SPARC64
467 if (env->wim & (1 << cwp1))
468 break;
469#else
470 if (env->canrestore == 0)
471 break;
472 env->cansave++;
473 env->canrestore--;
474#endif
475 save_window_offset(env, cwp1);
476 offset++;
477 }
478 cwp1 = cpu_cwp_inc(env, env->cwp + 1);
479#ifndef TARGET_SPARC64
480
481 env->wim = 1 << cwp1;
482#endif
483#if defined(DEBUG_WIN)
484 printf("flush_windows: nb=%d\n", offset - 1);
485#endif
486}
487
488void cpu_loop(CPUSPARCState *env)
489{
490 CPUState *cs = CPU(sparc_env_get_cpu(env));
491 int trapnr, ret, syscall_nr;
492
493
494 while (1) {
495 cpu_exec_start(cs);
496 trapnr = cpu_exec(cs);
497 cpu_exec_end(cs);
498 process_queued_cpu_work(cs);
499
500 switch (trapnr) {
501#ifndef TARGET_SPARC64
502 case 0x80:
503#else
504
505 case 0x141:
506 if (bsd_type != target_freebsd)
507 goto badtrap;
508 case 0x100:
509#endif
510 syscall_nr = env->gregs[1];
511 if (bsd_type == target_freebsd)
512 ret = do_freebsd_syscall(env, syscall_nr,
513 env->regwptr[0], env->regwptr[1],
514 env->regwptr[2], env->regwptr[3],
515 env->regwptr[4], env->regwptr[5], 0, 0);
516 else if (bsd_type == target_netbsd)
517 ret = do_netbsd_syscall(env, syscall_nr,
518 env->regwptr[0], env->regwptr[1],
519 env->regwptr[2], env->regwptr[3],
520 env->regwptr[4], env->regwptr[5]);
521 else {
522#if defined(TARGET_SPARC64)
523 syscall_nr &= ~(TARGET_OPENBSD_SYSCALL_G7RFLAG |
524 TARGET_OPENBSD_SYSCALL_G2RFLAG);
525#endif
526 ret = do_openbsd_syscall(env, syscall_nr,
527 env->regwptr[0], env->regwptr[1],
528 env->regwptr[2], env->regwptr[3],
529 env->regwptr[4], env->regwptr[5]);
530 }
531 if ((unsigned int)ret >= (unsigned int)(-515)) {
532 ret = -ret;
533#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
534 env->xcc |= PSR_CARRY;
535#else
536 env->psr |= PSR_CARRY;
537#endif
538 } else {
539#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
540 env->xcc &= ~PSR_CARRY;
541#else
542 env->psr &= ~PSR_CARRY;
543#endif
544 }
545 env->regwptr[0] = ret;
546
547#if defined(TARGET_SPARC64)
548 if (bsd_type == target_openbsd &&
549 env->gregs[1] & TARGET_OPENBSD_SYSCALL_G2RFLAG) {
550 env->pc = env->gregs[2];
551 env->npc = env->pc + 4;
552 } else if (bsd_type == target_openbsd &&
553 env->gregs[1] & TARGET_OPENBSD_SYSCALL_G7RFLAG) {
554 env->pc = env->gregs[7];
555 env->npc = env->pc + 4;
556 } else {
557 env->pc = env->npc;
558 env->npc = env->npc + 4;
559 }
560#else
561 env->pc = env->npc;
562 env->npc = env->npc + 4;
563#endif
564 break;
565 case 0x83:
566#ifdef TARGET_ABI32
567 case 0x103:
568#endif
569 flush_windows(env);
570
571 env->pc = env->npc;
572 env->npc = env->npc + 4;
573 break;
574#ifndef TARGET_SPARC64
575 case TT_WIN_OVF:
576 save_window(env);
577 break;
578 case TT_WIN_UNF:
579 restore_window(env);
580 break;
581 case TT_TFAULT:
582 case TT_DFAULT:
583#if 0
584 {
585 info.si_signo = SIGSEGV;
586 info.si_errno = 0;
587
588 info.si_code = TARGET_SEGV_MAPERR;
589 info._sifields._sigfault._addr = env->mmuregs[4];
590 queue_signal(env, info.si_signo, &info);
591 }
592#endif
593 break;
594#else
595 case TT_SPILL:
596 save_window(env);
597 break;
598 case TT_FILL:
599 restore_window(env);
600 break;
601 case TT_TFAULT:
602 case TT_DFAULT:
603#if 0
604 {
605 info.si_signo = SIGSEGV;
606 info.si_errno = 0;
607
608 info.si_code = TARGET_SEGV_MAPERR;
609 if (trapnr == TT_DFAULT)
610 info._sifields._sigfault._addr = env->dmmuregs[4];
611 else
612 info._sifields._sigfault._addr = env->tsptr->tpc;
613
614 }
615#endif
616 break;
617#endif
618 case EXCP_INTERRUPT:
619
620 break;
621 case EXCP_DEBUG:
622 {
623 int sig;
624
625 sig = gdb_handlesig(cs, TARGET_SIGTRAP);
626#if 0
627 if (sig)
628 {
629 info.si_signo = sig;
630 info.si_errno = 0;
631 info.si_code = TARGET_TRAP_BRKPT;
632
633 }
634#endif
635 }
636 break;
637 default:
638#ifdef TARGET_SPARC64
639 badtrap:
640#endif
641 printf ("Unhandled trap: 0x%x\n", trapnr);
642 cpu_dump_state(cs, stderr, fprintf, 0);
643 exit (1);
644 }
645 process_pending_signals (env);
646 }
647}
648
649#endif
650
651static void usage(void)
652{
653 printf("qemu-" TARGET_NAME " version " QEMU_VERSION QEMU_PKGVERSION
654 "\n" QEMU_COPYRIGHT "\n"
655 "usage: qemu-" TARGET_NAME " [options] program [arguments...]\n"
656 "BSD CPU emulator (compiled for %s emulation)\n"
657 "\n"
658 "Standard options:\n"
659 "-h print this help\n"
660 "-g port wait gdb connection to port\n"
661 "-L path set the elf interpreter prefix (default=%s)\n"
662 "-s size set the stack size in bytes (default=%ld)\n"
663 "-cpu model select CPU (-cpu help for list)\n"
664 "-drop-ld-preload drop LD_PRELOAD for target process\n"
665 "-E var=value sets/modifies targets environment variable(s)\n"
666 "-U var unsets targets environment variable(s)\n"
667 "-B address set guest_base address to address\n"
668 "-bsd type select emulated BSD type FreeBSD/NetBSD/OpenBSD (default)\n"
669 "\n"
670 "Debug options:\n"
671 "-d item1[,...] enable logging of specified items\n"
672 " (use '-d help' for a list of log items)\n"
673 "-D logfile write logs to 'logfile' (default stderr)\n"
674 "-p pagesize set the host page size to 'pagesize'\n"
675 "-singlestep always run in singlestep mode\n"
676 "-strace log system calls\n"
677 "-trace [[enable=]<pattern>][,events=<file>][,file=<file>]\n"
678 " specify tracing options\n"
679 "\n"
680 "Environment variables:\n"
681 "QEMU_STRACE Print system calls and arguments similar to the\n"
682 " 'strace' program. Enable by setting to any value.\n"
683 "You can use -E and -U options to set/unset environment variables\n"
684 "for target process. It is possible to provide several variables\n"
685 "by repeating the option. For example:\n"
686 " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
687 "Note that if you provide several changes to single variable\n"
688 "last change will stay in effect.\n"
689 ,
690 TARGET_NAME,
691 interp_prefix,
692 x86_stack_size);
693 exit(1);
694}
695
696THREAD CPUState *thread_cpu;
697
698bool qemu_cpu_is_self(CPUState *cpu)
699{
700 return thread_cpu == cpu;
701}
702
703void qemu_cpu_kick(CPUState *cpu)
704{
705 cpu_exit(cpu);
706}
707
708
709void init_task_state(TaskState *ts)
710{
711 int i;
712
713 ts->used = 1;
714 ts->first_free = ts->sigqueue_table;
715 for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) {
716 ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1];
717 }
718 ts->sigqueue_table[i].next = NULL;
719}
720
721int main(int argc, char **argv)
722{
723 const char *filename;
724 const char *cpu_model;
725 const char *log_file = NULL;
726 const char *log_mask = NULL;
727 struct target_pt_regs regs1, *regs = ®s1;
728 struct image_info info1, *info = &info1;
729 TaskState ts1, *ts = &ts1;
730 CPUArchState *env;
731 CPUState *cpu;
732 int optind;
733 const char *r;
734 int gdbstub_port = 0;
735 char **target_environ, **wrk;
736 envlist_t *envlist = NULL;
737 char *trace_file = NULL;
738 bsd_type = target_openbsd;
739
740 if (argc <= 1)
741 usage();
742
743 module_call_init(MODULE_INIT_TRACE);
744 qemu_init_cpu_list();
745 module_call_init(MODULE_INIT_QOM);
746
747 if ((envlist = envlist_create()) == NULL) {
748 (void) fprintf(stderr, "Unable to allocate envlist\n");
749 exit(1);
750 }
751
752
753 for (wrk = environ; *wrk != NULL; wrk++) {
754 (void) envlist_setenv(envlist, *wrk);
755 }
756
757 cpu_model = NULL;
758
759 qemu_add_opts(&qemu_trace_opts);
760
761 optind = 1;
762 for (;;) {
763 if (optind >= argc)
764 break;
765 r = argv[optind];
766 if (r[0] != '-')
767 break;
768 optind++;
769 r++;
770 if (!strcmp(r, "-")) {
771 break;
772 } else if (!strcmp(r, "d")) {
773 if (optind >= argc) {
774 break;
775 }
776 log_mask = argv[optind++];
777 } else if (!strcmp(r, "D")) {
778 if (optind >= argc) {
779 break;
780 }
781 log_file = argv[optind++];
782 } else if (!strcmp(r, "E")) {
783 r = argv[optind++];
784 if (envlist_setenv(envlist, r) != 0)
785 usage();
786 } else if (!strcmp(r, "ignore-environment")) {
787 envlist_free(envlist);
788 if ((envlist = envlist_create()) == NULL) {
789 (void) fprintf(stderr, "Unable to allocate envlist\n");
790 exit(1);
791 }
792 } else if (!strcmp(r, "U")) {
793 r = argv[optind++];
794 if (envlist_unsetenv(envlist, r) != 0)
795 usage();
796 } else if (!strcmp(r, "s")) {
797 r = argv[optind++];
798 x86_stack_size = strtol(r, (char **)&r, 0);
799 if (x86_stack_size <= 0)
800 usage();
801 if (*r == 'M')
802 x86_stack_size *= 1024 * 1024;
803 else if (*r == 'k' || *r == 'K')
804 x86_stack_size *= 1024;
805 } else if (!strcmp(r, "L")) {
806 interp_prefix = argv[optind++];
807 } else if (!strcmp(r, "p")) {
808 qemu_host_page_size = atoi(argv[optind++]);
809 if (qemu_host_page_size == 0 ||
810 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
811 fprintf(stderr, "page size must be a power of two\n");
812 exit(1);
813 }
814 } else if (!strcmp(r, "g")) {
815 gdbstub_port = atoi(argv[optind++]);
816 } else if (!strcmp(r, "r")) {
817 qemu_uname_release = argv[optind++];
818 } else if (!strcmp(r, "cpu")) {
819 cpu_model = argv[optind++];
820 if (is_help_option(cpu_model)) {
821
822#if defined(cpu_list)
823 cpu_list(stdout, &fprintf);
824#endif
825 exit(1);
826 }
827 } else if (!strcmp(r, "B")) {
828 guest_base = strtol(argv[optind++], NULL, 0);
829 have_guest_base = 1;
830 } else if (!strcmp(r, "drop-ld-preload")) {
831 (void) envlist_unsetenv(envlist, "LD_PRELOAD");
832 } else if (!strcmp(r, "bsd")) {
833 if (!strcasecmp(argv[optind], "freebsd")) {
834 bsd_type = target_freebsd;
835 } else if (!strcasecmp(argv[optind], "netbsd")) {
836 bsd_type = target_netbsd;
837 } else if (!strcasecmp(argv[optind], "openbsd")) {
838 bsd_type = target_openbsd;
839 } else {
840 usage();
841 }
842 optind++;
843 } else if (!strcmp(r, "singlestep")) {
844 singlestep = 1;
845 } else if (!strcmp(r, "strace")) {
846 do_strace = 1;
847 } else if (!strcmp(r, "trace")) {
848 g_free(trace_file);
849 trace_file = trace_opt_parse(optarg);
850 } else {
851 usage();
852 }
853 }
854
855
856 qemu_log_needs_buffers();
857 qemu_set_log_filename(log_file, &error_fatal);
858 if (log_mask) {
859 int mask;
860
861 mask = qemu_str_to_log_mask(log_mask);
862 if (!mask) {
863 qemu_print_log_usage(stdout);
864 exit(1);
865 }
866 qemu_set_log(mask);
867 }
868
869 if (optind >= argc) {
870 usage();
871 }
872 filename = argv[optind];
873
874 if (!trace_init_backends()) {
875 exit(1);
876 }
877 trace_init_file(trace_file);
878
879
880 memset(regs, 0, sizeof(struct target_pt_regs));
881
882
883 memset(info, 0, sizeof(struct image_info));
884
885
886 init_paths(interp_prefix);
887
888 if (cpu_model == NULL) {
889#if defined(TARGET_I386)
890#ifdef TARGET_X86_64
891 cpu_model = "qemu64";
892#else
893 cpu_model = "qemu32";
894#endif
895#elif defined(TARGET_SPARC)
896#ifdef TARGET_SPARC64
897 cpu_model = "TI UltraSparc II";
898#else
899 cpu_model = "Fujitsu MB86904";
900#endif
901#else
902 cpu_model = "any";
903#endif
904 }
905 tcg_exec_init(0);
906
907
908 cpu = cpu_init(cpu_model);
909 if (!cpu) {
910 fprintf(stderr, "Unable to find CPU definition\n");
911 exit(1);
912 }
913 env = cpu->env_ptr;
914#if defined(TARGET_SPARC) || defined(TARGET_PPC)
915 cpu_reset(cpu);
916#endif
917 thread_cpu = cpu;
918
919 if (getenv("QEMU_STRACE")) {
920 do_strace = 1;
921 }
922
923 target_environ = envlist_to_environ(envlist, NULL);
924 envlist_free(envlist);
925
926
927
928
929
930 guest_base = HOST_PAGE_ALIGN(guest_base);
931
932
933
934
935
936
937
938
939
940 if (!have_guest_base) {
941 FILE *fp;
942
943 if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) {
944 unsigned long tmp;
945 if (fscanf(fp, "%lu", &tmp) == 1) {
946 mmap_min_addr = tmp;
947 qemu_log_mask(CPU_LOG_PAGE, "host mmap_min_addr=0x%lx\n", mmap_min_addr);
948 }
949 fclose(fp);
950 }
951 }
952
953 if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) {
954 printf("Error loading %s\n", filename);
955 _exit(1);
956 }
957
958 for (wrk = target_environ; *wrk; wrk++) {
959 free(*wrk);
960 }
961
962 free(target_environ);
963
964 if (qemu_loglevel_mask(CPU_LOG_PAGE)) {
965 qemu_log("guest_base 0x%lx\n", guest_base);
966 log_page_dump();
967
968 qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk);
969 qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code);
970 qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n",
971 info->start_code);
972 qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n",
973 info->start_data);
974 qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data);
975 qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n",
976 info->start_stack);
977 qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk);
978 qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry);
979 }
980
981 target_set_brk(info->brk);
982 syscall_init();
983 signal_init();
984
985
986
987
988 tcg_prologue_init(&tcg_ctx);
989
990
991 memset(ts, 0, sizeof(TaskState));
992 init_task_state(ts);
993 ts->info = info;
994 cpu->opaque = ts;
995
996#if defined(TARGET_I386)
997 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
998 env->hflags |= HF_PE_MASK | HF_CPL_MASK;
999 if (env->features[FEAT_1_EDX] & CPUID_SSE) {
1000 env->cr[4] |= CR4_OSFXSR_MASK;
1001 env->hflags |= HF_OSFXSR_MASK;
1002 }
1003#ifndef TARGET_ABI32
1004
1005 if (!(env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM)) {
1006 fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n");
1007 exit(1);
1008 }
1009 env->cr[4] |= CR4_PAE_MASK;
1010 env->efer |= MSR_EFER_LMA | MSR_EFER_LME;
1011 env->hflags |= HF_LMA_MASK;
1012#endif
1013
1014
1015 env->eflags |= IF_MASK;
1016
1017
1018#ifndef TARGET_ABI32
1019 env->regs[R_EAX] = regs->rax;
1020 env->regs[R_EBX] = regs->rbx;
1021 env->regs[R_ECX] = regs->rcx;
1022 env->regs[R_EDX] = regs->rdx;
1023 env->regs[R_ESI] = regs->rsi;
1024 env->regs[R_EDI] = regs->rdi;
1025 env->regs[R_EBP] = regs->rbp;
1026 env->regs[R_ESP] = regs->rsp;
1027 env->eip = regs->rip;
1028#else
1029 env->regs[R_EAX] = regs->eax;
1030 env->regs[R_EBX] = regs->ebx;
1031 env->regs[R_ECX] = regs->ecx;
1032 env->regs[R_EDX] = regs->edx;
1033 env->regs[R_ESI] = regs->esi;
1034 env->regs[R_EDI] = regs->edi;
1035 env->regs[R_EBP] = regs->ebp;
1036 env->regs[R_ESP] = regs->esp;
1037 env->eip = regs->eip;
1038#endif
1039
1040
1041#ifndef TARGET_ABI32
1042 env->idt.limit = 511;
1043#else
1044 env->idt.limit = 255;
1045#endif
1046 env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1),
1047 PROT_READ|PROT_WRITE,
1048 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
1049 idt_table = g2h(env->idt.base);
1050 set_idt(0, 0);
1051 set_idt(1, 0);
1052 set_idt(2, 0);
1053 set_idt(3, 3);
1054 set_idt(4, 3);
1055 set_idt(5, 0);
1056 set_idt(6, 0);
1057 set_idt(7, 0);
1058 set_idt(8, 0);
1059 set_idt(9, 0);
1060 set_idt(10, 0);
1061 set_idt(11, 0);
1062 set_idt(12, 0);
1063 set_idt(13, 0);
1064 set_idt(14, 0);
1065 set_idt(15, 0);
1066 set_idt(16, 0);
1067 set_idt(17, 0);
1068 set_idt(18, 0);
1069 set_idt(19, 0);
1070 set_idt(0x80, 3);
1071
1072
1073 {
1074 uint64_t *gdt_table;
1075 env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES,
1076 PROT_READ|PROT_WRITE,
1077 MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
1078 env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1;
1079 gdt_table = g2h(env->gdt.base);
1080#ifdef TARGET_ABI32
1081 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
1082 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1083 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
1084#else
1085
1086 write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
1087 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1088 DESC_L_MASK |
1089 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
1090#endif
1091 write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff,
1092 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1093 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
1094 }
1095
1096 cpu_x86_load_seg(env, R_CS, __USER_CS);
1097 cpu_x86_load_seg(env, R_SS, __USER_DS);
1098#ifdef TARGET_ABI32
1099 cpu_x86_load_seg(env, R_DS, __USER_DS);
1100 cpu_x86_load_seg(env, R_ES, __USER_DS);
1101 cpu_x86_load_seg(env, R_FS, __USER_DS);
1102 cpu_x86_load_seg(env, R_GS, __USER_DS);
1103
1104 env->segs[R_FS].selector = 0;
1105#else
1106 cpu_x86_load_seg(env, R_DS, 0);
1107 cpu_x86_load_seg(env, R_ES, 0);
1108 cpu_x86_load_seg(env, R_FS, 0);
1109 cpu_x86_load_seg(env, R_GS, 0);
1110#endif
1111#elif defined(TARGET_SPARC)
1112 {
1113 int i;
1114 env->pc = regs->pc;
1115 env->npc = regs->npc;
1116 env->y = regs->y;
1117 for(i = 0; i < 8; i++)
1118 env->gregs[i] = regs->u_regs[i];
1119 for(i = 0; i < 8; i++)
1120 env->regwptr[i] = regs->u_regs[i + 8];
1121 }
1122#else
1123#error unsupported target CPU
1124#endif
1125
1126 if (gdbstub_port) {
1127 gdbserver_start (gdbstub_port);
1128 gdb_handlesig(cpu, 0);
1129 }
1130 cpu_loop(env);
1131
1132 return 0;
1133}
1134
