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1.1 root 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
1.1.1.2 root 17: * along with this program; if not, see <http://www.gnu.org/licenses/>.
1.1 root 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>
1.1.1.2 root 26: #include <sys/types.h>
27: #include <sys/mman.h>
1.1 root 28:
29: #include "qemu.h"
30: #include "qemu-common.h"
31: /* For tb_lock */
1.1.1.6 root 32: #include "cpu.h"
1.1.1.4 root 33: #include "tcg.h"
34: #include "qemu-timer.h"
1.1.1.3 root 35: #include "envlist.h"
36:
1.1 root 37: #define DEBUG_LOGFILE "/tmp/qemu.log"
38:
1.1.1.2 root 39: int singlestep;
1.1.1.3 root 40: #if defined(CONFIG_USE_GUEST_BASE)
41: unsigned long mmap_min_addr;
42: unsigned long guest_base;
43: int have_guest_base;
1.1.1.8 ! root 44: unsigned long reserved_va;
1.1.1.3 root 45: #endif
1.1.1.2 root 46:
1.1.1.4 root 47: static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
1.1 root 48: const char *qemu_uname_release = CONFIG_UNAME_RELEASE;
49: extern char **environ;
1.1.1.3 root 50: enum BSDType bsd_type;
1.1 root 51:
52: /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
53: we allocate a bigger stack. Need a better solution, for example
54: by remapping the process stack directly at the right place */
55: unsigned long x86_stack_size = 512 * 1024;
56:
57: void gemu_log(const char *fmt, ...)
58: {
59: va_list ap;
60:
61: va_start(ap, fmt);
62: vfprintf(stderr, fmt, ap);
63: va_end(ap);
64: }
1.1.1.2 root 65:
66: #if defined(TARGET_I386)
1.1.1.8 ! root 67: int cpu_get_pic_interrupt(CPUX86State *env)
1.1.1.2 root 68: {
69: return -1;
70: }
71: #endif
72:
73: /* These are no-ops because we are not threadsafe. */
1.1.1.8 ! root 74: static inline void cpu_exec_start(CPUArchState *env)
1.1.1.2 root 75: {
76: }
77:
1.1.1.8 ! root 78: static inline void cpu_exec_end(CPUArchState *env)
1.1.1.2 root 79: {
80: }
81:
82: static inline void start_exclusive(void)
83: {
84: }
85:
86: static inline void end_exclusive(void)
87: {
88: }
89:
90: void fork_start(void)
91: {
92: }
93:
94: void fork_end(int child)
95: {
96: if (child) {
97: gdbserver_fork(thread_env);
98: }
99: }
100:
101: void cpu_list_lock(void)
102: {
103: }
104:
105: void cpu_list_unlock(void)
106: {
107: }
108:
109: #ifdef TARGET_I386
110: /***********************************************************/
111: /* CPUX86 core interface */
112:
1.1.1.8 ! root 113: void cpu_smm_update(CPUX86State *env)
1.1.1.2 root 114: {
115: }
116:
117: uint64_t cpu_get_tsc(CPUX86State *env)
118: {
119: return cpu_get_real_ticks();
120: }
121:
122: static void write_dt(void *ptr, unsigned long addr, unsigned long limit,
123: int flags)
124: {
125: unsigned int e1, e2;
126: uint32_t *p;
127: e1 = (addr << 16) | (limit & 0xffff);
128: e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
129: e2 |= flags;
130: p = ptr;
131: p[0] = tswap32(e1);
132: p[1] = tswap32(e2);
133: }
134:
135: static uint64_t *idt_table;
136: #ifdef TARGET_X86_64
137: static void set_gate64(void *ptr, unsigned int type, unsigned int dpl,
138: uint64_t addr, unsigned int sel)
139: {
140: uint32_t *p, e1, e2;
141: e1 = (addr & 0xffff) | (sel << 16);
142: e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
143: p = ptr;
144: p[0] = tswap32(e1);
145: p[1] = tswap32(e2);
146: p[2] = tswap32(addr >> 32);
147: p[3] = 0;
148: }
149: /* only dpl matters as we do only user space emulation */
150: static void set_idt(int n, unsigned int dpl)
151: {
152: set_gate64(idt_table + n * 2, 0, dpl, 0, 0);
153: }
154: #else
155: static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
156: uint32_t addr, unsigned int sel)
157: {
158: uint32_t *p, e1, e2;
159: e1 = (addr & 0xffff) | (sel << 16);
160: e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
161: p = ptr;
162: p[0] = tswap32(e1);
163: p[1] = tswap32(e2);
164: }
165:
166: /* only dpl matters as we do only user space emulation */
167: static void set_idt(int n, unsigned int dpl)
168: {
169: set_gate(idt_table + n, 0, dpl, 0, 0);
170: }
171: #endif
172:
1.1.1.3 root 173: void cpu_loop(CPUX86State *env)
1.1.1.2 root 174: {
175: int trapnr;
176: abi_ulong pc;
177: //target_siginfo_t info;
178:
179: for(;;) {
180: trapnr = cpu_x86_exec(env);
181: switch(trapnr) {
182: case 0x80:
183: /* syscall from int $0x80 */
1.1.1.3 root 184: if (bsd_type == target_freebsd) {
185: abi_ulong params = (abi_ulong) env->regs[R_ESP] +
186: sizeof(int32_t);
187: int32_t syscall_nr = env->regs[R_EAX];
188: int32_t arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8;
189:
190: if (syscall_nr == TARGET_FREEBSD_NR_syscall) {
191: get_user_s32(syscall_nr, params);
192: params += sizeof(int32_t);
193: } else if (syscall_nr == TARGET_FREEBSD_NR___syscall) {
194: get_user_s32(syscall_nr, params);
195: params += sizeof(int64_t);
196: }
197: get_user_s32(arg1, params);
198: params += sizeof(int32_t);
199: get_user_s32(arg2, params);
200: params += sizeof(int32_t);
201: get_user_s32(arg3, params);
202: params += sizeof(int32_t);
203: get_user_s32(arg4, params);
204: params += sizeof(int32_t);
205: get_user_s32(arg5, params);
206: params += sizeof(int32_t);
207: get_user_s32(arg6, params);
208: params += sizeof(int32_t);
209: get_user_s32(arg7, params);
210: params += sizeof(int32_t);
211: get_user_s32(arg8, params);
212: env->regs[R_EAX] = do_freebsd_syscall(env,
213: syscall_nr,
214: arg1,
215: arg2,
216: arg3,
217: arg4,
218: arg5,
219: arg6,
220: arg7,
221: arg8);
222: } else { //if (bsd_type == target_openbsd)
223: env->regs[R_EAX] = do_openbsd_syscall(env,
224: env->regs[R_EAX],
225: env->regs[R_EBX],
226: env->regs[R_ECX],
227: env->regs[R_EDX],
228: env->regs[R_ESI],
229: env->regs[R_EDI],
230: env->regs[R_EBP]);
231: }
232: if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
233: env->regs[R_EAX] = -env->regs[R_EAX];
234: env->eflags |= CC_C;
235: } else {
236: env->eflags &= ~CC_C;
237: }
1.1.1.2 root 238: break;
239: #ifndef TARGET_ABI32
240: case EXCP_SYSCALL:
1.1.1.6 root 241: /* syscall from syscall instruction */
1.1.1.3 root 242: if (bsd_type == target_freebsd)
243: env->regs[R_EAX] = do_freebsd_syscall(env,
244: env->regs[R_EAX],
245: env->regs[R_EDI],
246: env->regs[R_ESI],
247: env->regs[R_EDX],
248: env->regs[R_ECX],
249: env->regs[8],
250: env->regs[9], 0, 0);
251: else { //if (bsd_type == target_openbsd)
252: env->regs[R_EAX] = do_openbsd_syscall(env,
253: env->regs[R_EAX],
254: env->regs[R_EDI],
255: env->regs[R_ESI],
256: env->regs[R_EDX],
257: env->regs[10],
258: env->regs[8],
259: env->regs[9]);
260: }
1.1.1.2 root 261: env->eip = env->exception_next_eip;
1.1.1.3 root 262: if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
263: env->regs[R_EAX] = -env->regs[R_EAX];
264: env->eflags |= CC_C;
265: } else {
266: env->eflags &= ~CC_C;
267: }
1.1.1.2 root 268: break;
269: #endif
270: #if 0
271: case EXCP0B_NOSEG:
272: case EXCP0C_STACK:
273: info.si_signo = SIGBUS;
274: info.si_errno = 0;
275: info.si_code = TARGET_SI_KERNEL;
276: info._sifields._sigfault._addr = 0;
277: queue_signal(env, info.si_signo, &info);
278: break;
279: case EXCP0D_GPF:
280: /* XXX: potential problem if ABI32 */
281: #ifndef TARGET_X86_64
282: if (env->eflags & VM_MASK) {
283: handle_vm86_fault(env);
284: } else
285: #endif
286: {
287: info.si_signo = SIGSEGV;
288: info.si_errno = 0;
289: info.si_code = TARGET_SI_KERNEL;
290: info._sifields._sigfault._addr = 0;
291: queue_signal(env, info.si_signo, &info);
292: }
293: break;
294: case EXCP0E_PAGE:
295: info.si_signo = SIGSEGV;
296: info.si_errno = 0;
297: if (!(env->error_code & 1))
298: info.si_code = TARGET_SEGV_MAPERR;
299: else
300: info.si_code = TARGET_SEGV_ACCERR;
301: info._sifields._sigfault._addr = env->cr[2];
302: queue_signal(env, info.si_signo, &info);
303: break;
304: case EXCP00_DIVZ:
305: #ifndef TARGET_X86_64
306: if (env->eflags & VM_MASK) {
307: handle_vm86_trap(env, trapnr);
308: } else
309: #endif
310: {
311: /* division by zero */
312: info.si_signo = SIGFPE;
313: info.si_errno = 0;
314: info.si_code = TARGET_FPE_INTDIV;
315: info._sifields._sigfault._addr = env->eip;
316: queue_signal(env, info.si_signo, &info);
317: }
318: break;
319: case EXCP01_DB:
320: case EXCP03_INT3:
321: #ifndef TARGET_X86_64
322: if (env->eflags & VM_MASK) {
323: handle_vm86_trap(env, trapnr);
324: } else
325: #endif
326: {
327: info.si_signo = SIGTRAP;
328: info.si_errno = 0;
329: if (trapnr == EXCP01_DB) {
330: info.si_code = TARGET_TRAP_BRKPT;
331: info._sifields._sigfault._addr = env->eip;
332: } else {
333: info.si_code = TARGET_SI_KERNEL;
334: info._sifields._sigfault._addr = 0;
335: }
336: queue_signal(env, info.si_signo, &info);
337: }
338: break;
339: case EXCP04_INTO:
340: case EXCP05_BOUND:
341: #ifndef TARGET_X86_64
342: if (env->eflags & VM_MASK) {
343: handle_vm86_trap(env, trapnr);
344: } else
345: #endif
346: {
347: info.si_signo = SIGSEGV;
348: info.si_errno = 0;
349: info.si_code = TARGET_SI_KERNEL;
350: info._sifields._sigfault._addr = 0;
351: queue_signal(env, info.si_signo, &info);
352: }
353: break;
354: case EXCP06_ILLOP:
355: info.si_signo = SIGILL;
356: info.si_errno = 0;
357: info.si_code = TARGET_ILL_ILLOPN;
358: info._sifields._sigfault._addr = env->eip;
359: queue_signal(env, info.si_signo, &info);
360: break;
361: #endif
362: case EXCP_INTERRUPT:
363: /* just indicate that signals should be handled asap */
364: break;
365: #if 0
366: case EXCP_DEBUG:
367: {
368: int sig;
369:
370: sig = gdb_handlesig (env, TARGET_SIGTRAP);
371: if (sig)
372: {
373: info.si_signo = sig;
374: info.si_errno = 0;
375: info.si_code = TARGET_TRAP_BRKPT;
376: queue_signal(env, info.si_signo, &info);
377: }
378: }
379: break;
380: #endif
381: default:
382: pc = env->segs[R_CS].base + env->eip;
383: fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
384: (long)pc, trapnr);
385: abort();
386: }
387: process_pending_signals(env);
388: }
389: }
390: #endif
391:
1.1 root 392: #ifdef TARGET_SPARC
393: #define SPARC64_STACK_BIAS 2047
394:
395: //#define DEBUG_WIN
396: /* WARNING: dealing with register windows _is_ complicated. More info
397: can be found at http://www.sics.se/~psm/sparcstack.html */
398: static inline int get_reg_index(CPUSPARCState *env, int cwp, int index)
399: {
400: index = (index + cwp * 16) % (16 * env->nwindows);
401: /* wrap handling : if cwp is on the last window, then we use the
402: registers 'after' the end */
403: if (index < 8 && env->cwp == env->nwindows - 1)
404: index += 16 * env->nwindows;
405: return index;
406: }
407:
408: /* save the register window 'cwp1' */
409: static inline void save_window_offset(CPUSPARCState *env, int cwp1)
410: {
411: unsigned int i;
412: abi_ulong sp_ptr;
413:
414: sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
415: #ifdef TARGET_SPARC64
416: if (sp_ptr & 3)
417: sp_ptr += SPARC64_STACK_BIAS;
418: #endif
419: #if defined(DEBUG_WIN)
420: printf("win_overflow: sp_ptr=0x" TARGET_ABI_FMT_lx " save_cwp=%d\n",
421: sp_ptr, cwp1);
422: #endif
423: for(i = 0; i < 16; i++) {
424: /* FIXME - what to do if put_user() fails? */
425: put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
426: sp_ptr += sizeof(abi_ulong);
427: }
428: }
429:
430: static void save_window(CPUSPARCState *env)
431: {
432: #ifndef TARGET_SPARC64
433: unsigned int new_wim;
434: new_wim = ((env->wim >> 1) | (env->wim << (env->nwindows - 1))) &
435: ((1LL << env->nwindows) - 1);
436: save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
437: env->wim = new_wim;
438: #else
439: save_window_offset(env, cpu_cwp_dec(env, env->cwp - 2));
440: env->cansave++;
441: env->canrestore--;
442: #endif
443: }
444:
445: static void restore_window(CPUSPARCState *env)
446: {
447: #ifndef TARGET_SPARC64
448: unsigned int new_wim;
449: #endif
450: unsigned int i, cwp1;
451: abi_ulong sp_ptr;
452:
453: #ifndef TARGET_SPARC64
454: new_wim = ((env->wim << 1) | (env->wim >> (env->nwindows - 1))) &
455: ((1LL << env->nwindows) - 1);
456: #endif
457:
458: /* restore the invalid window */
459: cwp1 = cpu_cwp_inc(env, env->cwp + 1);
460: sp_ptr = env->regbase[get_reg_index(env, cwp1, 6)];
461: #ifdef TARGET_SPARC64
462: if (sp_ptr & 3)
463: sp_ptr += SPARC64_STACK_BIAS;
464: #endif
465: #if defined(DEBUG_WIN)
466: printf("win_underflow: sp_ptr=0x" TARGET_ABI_FMT_lx " load_cwp=%d\n",
467: sp_ptr, cwp1);
468: #endif
469: for(i = 0; i < 16; i++) {
470: /* FIXME - what to do if get_user() fails? */
471: get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
472: sp_ptr += sizeof(abi_ulong);
473: }
474: #ifdef TARGET_SPARC64
475: env->canrestore++;
476: if (env->cleanwin < env->nwindows - 1)
477: env->cleanwin++;
478: env->cansave--;
479: #else
480: env->wim = new_wim;
481: #endif
482: }
483:
484: static void flush_windows(CPUSPARCState *env)
485: {
486: int offset, cwp1;
487:
488: offset = 1;
489: for(;;) {
490: /* if restore would invoke restore_window(), then we can stop */
491: cwp1 = cpu_cwp_inc(env, env->cwp + offset);
492: #ifndef TARGET_SPARC64
493: if (env->wim & (1 << cwp1))
494: break;
495: #else
496: if (env->canrestore == 0)
497: break;
498: env->cansave++;
499: env->canrestore--;
500: #endif
501: save_window_offset(env, cwp1);
502: offset++;
503: }
504: cwp1 = cpu_cwp_inc(env, env->cwp + 1);
505: #ifndef TARGET_SPARC64
506: /* set wim so that restore will reload the registers */
507: env->wim = 1 << cwp1;
508: #endif
509: #if defined(DEBUG_WIN)
510: printf("flush_windows: nb=%d\n", offset - 1);
511: #endif
512: }
513:
1.1.1.3 root 514: void cpu_loop(CPUSPARCState *env)
1.1 root 515: {
516: int trapnr, ret, syscall_nr;
517: //target_siginfo_t info;
518:
519: while (1) {
520: trapnr = cpu_sparc_exec (env);
521:
522: switch (trapnr) {
523: #ifndef TARGET_SPARC64
524: case 0x80:
525: #else
1.1.1.3 root 526: /* FreeBSD uses 0x141 for syscalls too */
527: case 0x141:
528: if (bsd_type != target_freebsd)
529: goto badtrap;
1.1 root 530: case 0x100:
531: #endif
532: syscall_nr = env->gregs[1];
533: if (bsd_type == target_freebsd)
534: ret = do_freebsd_syscall(env, syscall_nr,
535: env->regwptr[0], env->regwptr[1],
536: env->regwptr[2], env->regwptr[3],
1.1.1.3 root 537: env->regwptr[4], env->regwptr[5], 0, 0);
1.1 root 538: else if (bsd_type == target_netbsd)
539: ret = do_netbsd_syscall(env, syscall_nr,
540: env->regwptr[0], env->regwptr[1],
541: env->regwptr[2], env->regwptr[3],
542: env->regwptr[4], env->regwptr[5]);
543: else { //if (bsd_type == target_openbsd)
544: #if defined(TARGET_SPARC64)
545: syscall_nr &= ~(TARGET_OPENBSD_SYSCALL_G7RFLAG |
546: TARGET_OPENBSD_SYSCALL_G2RFLAG);
547: #endif
548: ret = do_openbsd_syscall(env, syscall_nr,
549: env->regwptr[0], env->regwptr[1],
550: env->regwptr[2], env->regwptr[3],
551: env->regwptr[4], env->regwptr[5]);
552: }
553: if ((unsigned int)ret >= (unsigned int)(-515)) {
1.1.1.3 root 554: ret = -ret;
1.1 root 555: #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
556: env->xcc |= PSR_CARRY;
557: #else
558: env->psr |= PSR_CARRY;
559: #endif
560: } else {
561: #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
562: env->xcc &= ~PSR_CARRY;
563: #else
564: env->psr &= ~PSR_CARRY;
565: #endif
566: }
567: env->regwptr[0] = ret;
568: /* next instruction */
569: #if defined(TARGET_SPARC64)
570: if (bsd_type == target_openbsd &&
571: env->gregs[1] & TARGET_OPENBSD_SYSCALL_G2RFLAG) {
572: env->pc = env->gregs[2];
573: env->npc = env->pc + 4;
574: } else if (bsd_type == target_openbsd &&
575: env->gregs[1] & TARGET_OPENBSD_SYSCALL_G7RFLAG) {
576: env->pc = env->gregs[7];
577: env->npc = env->pc + 4;
578: } else {
579: env->pc = env->npc;
580: env->npc = env->npc + 4;
581: }
582: #else
583: env->pc = env->npc;
584: env->npc = env->npc + 4;
585: #endif
586: break;
587: case 0x83: /* flush windows */
588: #ifdef TARGET_ABI32
589: case 0x103:
590: #endif
591: flush_windows(env);
592: /* next instruction */
593: env->pc = env->npc;
594: env->npc = env->npc + 4;
595: break;
596: #ifndef TARGET_SPARC64
597: case TT_WIN_OVF: /* window overflow */
598: save_window(env);
599: break;
600: case TT_WIN_UNF: /* window underflow */
601: restore_window(env);
602: break;
603: case TT_TFAULT:
604: case TT_DFAULT:
605: #if 0
606: {
607: info.si_signo = SIGSEGV;
608: info.si_errno = 0;
609: /* XXX: check env->error_code */
610: info.si_code = TARGET_SEGV_MAPERR;
611: info._sifields._sigfault._addr = env->mmuregs[4];
612: queue_signal(env, info.si_signo, &info);
613: }
614: #endif
615: break;
616: #else
617: case TT_SPILL: /* window overflow */
618: save_window(env);
619: break;
620: case TT_FILL: /* window underflow */
621: restore_window(env);
622: break;
623: case TT_TFAULT:
624: case TT_DFAULT:
625: #if 0
626: {
627: info.si_signo = SIGSEGV;
628: info.si_errno = 0;
629: /* XXX: check env->error_code */
630: info.si_code = TARGET_SEGV_MAPERR;
631: if (trapnr == TT_DFAULT)
632: info._sifields._sigfault._addr = env->dmmuregs[4];
633: else
634: info._sifields._sigfault._addr = env->tsptr->tpc;
635: //queue_signal(env, info.si_signo, &info);
636: }
637: #endif
638: break;
639: #endif
640: case EXCP_INTERRUPT:
641: /* just indicate that signals should be handled asap */
642: break;
643: case EXCP_DEBUG:
644: {
645: int sig;
646:
647: sig = gdb_handlesig (env, TARGET_SIGTRAP);
648: #if 0
649: if (sig)
650: {
651: info.si_signo = sig;
652: info.si_errno = 0;
653: info.si_code = TARGET_TRAP_BRKPT;
654: //queue_signal(env, info.si_signo, &info);
655: }
656: #endif
657: }
658: break;
659: default:
1.1.1.3 root 660: #ifdef TARGET_SPARC64
661: badtrap:
662: #endif
1.1 root 663: printf ("Unhandled trap: 0x%x\n", trapnr);
664: cpu_dump_state(env, stderr, fprintf, 0);
665: exit (1);
666: }
667: process_pending_signals (env);
668: }
669: }
670:
671: #endif
672:
673: static void usage(void)
674: {
675: printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n"
676: "usage: qemu-" TARGET_ARCH " [options] program [arguments...]\n"
677: "BSD CPU emulator (compiled for %s emulation)\n"
678: "\n"
679: "Standard options:\n"
680: "-h print this help\n"
681: "-g port wait gdb connection to port\n"
682: "-L path set the elf interpreter prefix (default=%s)\n"
683: "-s size set the stack size in bytes (default=%ld)\n"
684: "-cpu model select CPU (-cpu ? for list)\n"
685: "-drop-ld-preload drop LD_PRELOAD for target process\n"
1.1.1.3 root 686: "-E var=value sets/modifies targets environment variable(s)\n"
687: "-U var unsets targets environment variable(s)\n"
688: #if defined(CONFIG_USE_GUEST_BASE)
689: "-B address set guest_base address to address\n"
690: #endif
1.1 root 691: "-bsd type select emulated BSD type FreeBSD/NetBSD/OpenBSD (default)\n"
692: "\n"
693: "Debug options:\n"
1.1.1.6 root 694: "-d options activate log (default logfile=%s)\n"
695: "-D logfile override default logfile location\n"
1.1 root 696: "-p pagesize set the host page size to 'pagesize'\n"
1.1.1.2 root 697: "-singlestep always run in singlestep mode\n"
1.1 root 698: "-strace log system calls\n"
699: "\n"
700: "Environment variables:\n"
701: "QEMU_STRACE Print system calls and arguments similar to the\n"
702: " 'strace' program. Enable by setting to any value.\n"
1.1.1.3 root 703: "You can use -E and -U options to set/unset environment variables\n"
704: "for target process. It is possible to provide several variables\n"
705: "by repeating the option. For example:\n"
706: " -E var1=val2 -E var2=val2 -U LD_PRELOAD -U LD_DEBUG\n"
707: "Note that if you provide several changes to single variable\n"
708: "last change will stay in effect.\n"
1.1 root 709: ,
710: TARGET_ARCH,
711: interp_prefix,
712: x86_stack_size,
713: DEBUG_LOGFILE);
714: exit(1);
715: }
716:
1.1.1.8 ! root 717: THREAD CPUArchState *thread_env;
1.1 root 718:
719: /* Assumes contents are already zeroed. */
720: void init_task_state(TaskState *ts)
721: {
722: int i;
723:
724: ts->used = 1;
725: ts->first_free = ts->sigqueue_table;
726: for (i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++) {
727: ts->sigqueue_table[i].next = &ts->sigqueue_table[i + 1];
728: }
729: ts->sigqueue_table[i].next = NULL;
730: }
731:
732: int main(int argc, char **argv)
733: {
734: const char *filename;
735: const char *cpu_model;
1.1.1.6 root 736: const char *log_file = DEBUG_LOGFILE;
737: const char *log_mask = NULL;
1.1 root 738: struct target_pt_regs regs1, *regs = ®s1;
739: struct image_info info1, *info = &info1;
740: TaskState ts1, *ts = &ts1;
1.1.1.8 ! root 741: CPUArchState *env;
1.1 root 742: int optind;
743: const char *r;
744: int gdbstub_port = 0;
1.1.1.3 root 745: char **target_environ, **wrk;
746: envlist_t *envlist = NULL;
747: bsd_type = target_openbsd;
1.1 root 748:
749: if (argc <= 1)
750: usage();
751:
1.1.1.8 ! root 752: module_call_init(MODULE_INIT_QOM);
! 753:
1.1.1.3 root 754: if ((envlist = envlist_create()) == NULL) {
755: (void) fprintf(stderr, "Unable to allocate envlist\n");
756: exit(1);
757: }
758:
759: /* add current environment into the list */
760: for (wrk = environ; *wrk != NULL; wrk++) {
761: (void) envlist_setenv(envlist, *wrk);
762: }
763:
1.1 root 764: cpu_model = NULL;
1.1.1.4 root 765: #if defined(cpudef_setup)
766: cpudef_setup(); /* parse cpu definitions in target config file (TBD) */
767: #endif
768:
1.1 root 769: optind = 1;
770: for(;;) {
771: if (optind >= argc)
772: break;
773: r = argv[optind];
774: if (r[0] != '-')
775: break;
776: optind++;
777: r++;
778: if (!strcmp(r, "-")) {
779: break;
780: } else if (!strcmp(r, "d")) {
1.1.1.6 root 781: if (optind >= argc) {
782: break;
783: }
784: log_mask = argv[optind++];
785: } else if (!strcmp(r, "D")) {
786: if (optind >= argc) {
1.1 root 787: break;
788: }
1.1.1.6 root 789: log_file = argv[optind++];
1.1.1.3 root 790: } else if (!strcmp(r, "E")) {
791: r = argv[optind++];
792: if (envlist_setenv(envlist, r) != 0)
793: usage();
1.1.1.5 root 794: } else if (!strcmp(r, "ignore-environment")) {
795: envlist_free(envlist);
796: if ((envlist = envlist_create()) == NULL) {
797: (void) fprintf(stderr, "Unable to allocate envlist\n");
798: exit(1);
799: }
1.1.1.3 root 800: } else if (!strcmp(r, "U")) {
801: r = argv[optind++];
802: if (envlist_unsetenv(envlist, r) != 0)
803: usage();
1.1 root 804: } else if (!strcmp(r, "s")) {
805: r = argv[optind++];
806: x86_stack_size = strtol(r, (char **)&r, 0);
807: if (x86_stack_size <= 0)
808: usage();
809: if (*r == 'M')
810: x86_stack_size *= 1024 * 1024;
811: else if (*r == 'k' || *r == 'K')
812: x86_stack_size *= 1024;
813: } else if (!strcmp(r, "L")) {
814: interp_prefix = argv[optind++];
815: } else if (!strcmp(r, "p")) {
816: qemu_host_page_size = atoi(argv[optind++]);
817: if (qemu_host_page_size == 0 ||
818: (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
819: fprintf(stderr, "page size must be a power of two\n");
820: exit(1);
821: }
822: } else if (!strcmp(r, "g")) {
823: gdbstub_port = atoi(argv[optind++]);
824: } else if (!strcmp(r, "r")) {
825: qemu_uname_release = argv[optind++];
826: } else if (!strcmp(r, "cpu")) {
827: cpu_model = argv[optind++];
828: if (strcmp(cpu_model, "?") == 0) {
829: /* XXX: implement xxx_cpu_list for targets that still miss it */
830: #if defined(cpu_list)
831: cpu_list(stdout, &fprintf);
832: #endif
833: exit(1);
834: }
1.1.1.3 root 835: #if defined(CONFIG_USE_GUEST_BASE)
836: } else if (!strcmp(r, "B")) {
837: guest_base = strtol(argv[optind++], NULL, 0);
838: have_guest_base = 1;
839: #endif
1.1 root 840: } else if (!strcmp(r, "drop-ld-preload")) {
1.1.1.3 root 841: (void) envlist_unsetenv(envlist, "LD_PRELOAD");
1.1 root 842: } else if (!strcmp(r, "bsd")) {
843: if (!strcasecmp(argv[optind], "freebsd")) {
844: bsd_type = target_freebsd;
845: } else if (!strcasecmp(argv[optind], "netbsd")) {
846: bsd_type = target_netbsd;
847: } else if (!strcasecmp(argv[optind], "openbsd")) {
848: bsd_type = target_openbsd;
849: } else {
850: usage();
851: }
852: optind++;
1.1.1.2 root 853: } else if (!strcmp(r, "singlestep")) {
854: singlestep = 1;
1.1 root 855: } else if (!strcmp(r, "strace")) {
856: do_strace = 1;
857: } else
858: {
859: usage();
860: }
861: }
1.1.1.6 root 862:
863: /* init debug */
864: cpu_set_log_filename(log_file);
865: if (log_mask) {
866: int mask;
867: const CPULogItem *item;
868:
869: mask = cpu_str_to_log_mask(log_mask);
870: if (!mask) {
871: printf("Log items (comma separated):\n");
872: for (item = cpu_log_items; item->mask != 0; item++) {
873: printf("%-10s %s\n", item->name, item->help);
874: }
875: exit(1);
876: }
877: cpu_set_log(mask);
878: }
879:
880: if (optind >= argc) {
1.1 root 881: usage();
1.1.1.6 root 882: }
1.1 root 883: filename = argv[optind];
884:
885: /* Zero out regs */
886: memset(regs, 0, sizeof(struct target_pt_regs));
887:
888: /* Zero out image_info */
889: memset(info, 0, sizeof(struct image_info));
890:
891: /* Scan interp_prefix dir for replacement files. */
892: init_paths(interp_prefix);
893:
894: if (cpu_model == NULL) {
1.1.1.2 root 895: #if defined(TARGET_I386)
896: #ifdef TARGET_X86_64
897: cpu_model = "qemu64";
898: #else
899: cpu_model = "qemu32";
900: #endif
901: #elif defined(TARGET_SPARC)
1.1 root 902: #ifdef TARGET_SPARC64
903: cpu_model = "TI UltraSparc II";
904: #else
905: cpu_model = "Fujitsu MB86904";
906: #endif
907: #else
908: cpu_model = "any";
909: #endif
910: }
1.1.1.7 root 911: tcg_exec_init(0);
912: cpu_exec_init_all();
1.1 root 913: /* NOTE: we need to init the CPU at this stage to get
914: qemu_host_page_size */
915: env = cpu_init(cpu_model);
916: if (!env) {
917: fprintf(stderr, "Unable to find CPU definition\n");
918: exit(1);
919: }
1.1.1.3 root 920: #if defined(TARGET_I386) || defined(TARGET_SPARC) || defined(TARGET_PPC)
1.1.1.8 ! root 921: cpu_state_reset(env);
1.1.1.3 root 922: #endif
1.1 root 923: thread_env = env;
924:
925: if (getenv("QEMU_STRACE")) {
926: do_strace = 1;
927: }
928:
1.1.1.3 root 929: target_environ = envlist_to_environ(envlist, NULL);
930: envlist_free(envlist);
931:
932: #if defined(CONFIG_USE_GUEST_BASE)
933: /*
934: * Now that page sizes are configured in cpu_init() we can do
935: * proper page alignment for guest_base.
936: */
937: guest_base = HOST_PAGE_ALIGN(guest_base);
938:
939: /*
940: * Read in mmap_min_addr kernel parameter. This value is used
941: * When loading the ELF image to determine whether guest_base
942: * is needed.
943: *
944: * When user has explicitly set the quest base, we skip this
945: * test.
946: */
947: if (!have_guest_base) {
948: FILE *fp;
949:
950: if ((fp = fopen("/proc/sys/vm/mmap_min_addr", "r")) != NULL) {
951: unsigned long tmp;
952: if (fscanf(fp, "%lu", &tmp) == 1) {
953: mmap_min_addr = tmp;
954: qemu_log("host mmap_min_addr=0x%lx\n", mmap_min_addr);
955: }
956: fclose(fp);
957: }
1.1 root 958: }
1.1.1.3 root 959: #endif /* CONFIG_USE_GUEST_BASE */
1.1 root 960:
961: if (loader_exec(filename, argv+optind, target_environ, regs, info) != 0) {
962: printf("Error loading %s\n", filename);
963: _exit(1);
964: }
965:
966: for (wrk = target_environ; *wrk; wrk++) {
967: free(*wrk);
968: }
969:
970: free(target_environ);
971:
972: if (qemu_log_enabled()) {
1.1.1.3 root 973: #if defined(CONFIG_USE_GUEST_BASE)
974: qemu_log("guest_base 0x%lx\n", guest_base);
975: #endif
1.1 root 976: log_page_dump();
977:
978: qemu_log("start_brk 0x" TARGET_ABI_FMT_lx "\n", info->start_brk);
979: qemu_log("end_code 0x" TARGET_ABI_FMT_lx "\n", info->end_code);
980: qemu_log("start_code 0x" TARGET_ABI_FMT_lx "\n",
981: info->start_code);
982: qemu_log("start_data 0x" TARGET_ABI_FMT_lx "\n",
983: info->start_data);
984: qemu_log("end_data 0x" TARGET_ABI_FMT_lx "\n", info->end_data);
985: qemu_log("start_stack 0x" TARGET_ABI_FMT_lx "\n",
986: info->start_stack);
987: qemu_log("brk 0x" TARGET_ABI_FMT_lx "\n", info->brk);
988: qemu_log("entry 0x" TARGET_ABI_FMT_lx "\n", info->entry);
989: }
990:
991: target_set_brk(info->brk);
992: syscall_init();
993: signal_init();
994:
1.1.1.4 root 995: #if defined(CONFIG_USE_GUEST_BASE)
996: /* Now that we've loaded the binary, GUEST_BASE is fixed. Delay
997: generating the prologue until now so that the prologue can take
998: the real value of GUEST_BASE into account. */
999: tcg_prologue_init(&tcg_ctx);
1000: #endif
1001:
1.1 root 1002: /* build Task State */
1003: memset(ts, 0, sizeof(TaskState));
1004: init_task_state(ts);
1005: ts->info = info;
1006: env->opaque = ts;
1007:
1.1.1.2 root 1008: #if defined(TARGET_I386)
1009: cpu_x86_set_cpl(env, 3);
1010:
1011: env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
1012: env->hflags |= HF_PE_MASK;
1013: if (env->cpuid_features & CPUID_SSE) {
1014: env->cr[4] |= CR4_OSFXSR_MASK;
1015: env->hflags |= HF_OSFXSR_MASK;
1016: }
1017: #ifndef TARGET_ABI32
1018: /* enable 64 bit mode if possible */
1019: if (!(env->cpuid_ext2_features & CPUID_EXT2_LM)) {
1020: fprintf(stderr, "The selected x86 CPU does not support 64 bit mode\n");
1021: exit(1);
1022: }
1023: env->cr[4] |= CR4_PAE_MASK;
1024: env->efer |= MSR_EFER_LMA | MSR_EFER_LME;
1025: env->hflags |= HF_LMA_MASK;
1026: #endif
1027:
1028: /* flags setup : we activate the IRQs by default as in user mode */
1029: env->eflags |= IF_MASK;
1030:
1031: /* linux register setup */
1032: #ifndef TARGET_ABI32
1033: env->regs[R_EAX] = regs->rax;
1034: env->regs[R_EBX] = regs->rbx;
1035: env->regs[R_ECX] = regs->rcx;
1036: env->regs[R_EDX] = regs->rdx;
1037: env->regs[R_ESI] = regs->rsi;
1038: env->regs[R_EDI] = regs->rdi;
1039: env->regs[R_EBP] = regs->rbp;
1040: env->regs[R_ESP] = regs->rsp;
1041: env->eip = regs->rip;
1042: #else
1043: env->regs[R_EAX] = regs->eax;
1044: env->regs[R_EBX] = regs->ebx;
1045: env->regs[R_ECX] = regs->ecx;
1046: env->regs[R_EDX] = regs->edx;
1047: env->regs[R_ESI] = regs->esi;
1048: env->regs[R_EDI] = regs->edi;
1049: env->regs[R_EBP] = regs->ebp;
1050: env->regs[R_ESP] = regs->esp;
1051: env->eip = regs->eip;
1052: #endif
1053:
1054: /* linux interrupt setup */
1055: #ifndef TARGET_ABI32
1056: env->idt.limit = 511;
1057: #else
1058: env->idt.limit = 255;
1059: #endif
1060: env->idt.base = target_mmap(0, sizeof(uint64_t) * (env->idt.limit + 1),
1061: PROT_READ|PROT_WRITE,
1062: MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
1063: idt_table = g2h(env->idt.base);
1064: set_idt(0, 0);
1065: set_idt(1, 0);
1066: set_idt(2, 0);
1067: set_idt(3, 3);
1068: set_idt(4, 3);
1069: set_idt(5, 0);
1070: set_idt(6, 0);
1071: set_idt(7, 0);
1072: set_idt(8, 0);
1073: set_idt(9, 0);
1074: set_idt(10, 0);
1075: set_idt(11, 0);
1076: set_idt(12, 0);
1077: set_idt(13, 0);
1078: set_idt(14, 0);
1079: set_idt(15, 0);
1080: set_idt(16, 0);
1081: set_idt(17, 0);
1082: set_idt(18, 0);
1083: set_idt(19, 0);
1084: set_idt(0x80, 3);
1085:
1086: /* linux segment setup */
1087: {
1088: uint64_t *gdt_table;
1089: env->gdt.base = target_mmap(0, sizeof(uint64_t) * TARGET_GDT_ENTRIES,
1090: PROT_READ|PROT_WRITE,
1091: MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
1092: env->gdt.limit = sizeof(uint64_t) * TARGET_GDT_ENTRIES - 1;
1093: gdt_table = g2h(env->gdt.base);
1094: #ifdef TARGET_ABI32
1095: write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
1096: DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1097: (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
1098: #else
1099: /* 64 bit code segment */
1100: write_dt(&gdt_table[__USER_CS >> 3], 0, 0xfffff,
1101: DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1102: DESC_L_MASK |
1103: (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
1104: #endif
1105: write_dt(&gdt_table[__USER_DS >> 3], 0, 0xfffff,
1106: DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
1107: (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
1108: }
1109:
1110: cpu_x86_load_seg(env, R_CS, __USER_CS);
1111: cpu_x86_load_seg(env, R_SS, __USER_DS);
1112: #ifdef TARGET_ABI32
1113: cpu_x86_load_seg(env, R_DS, __USER_DS);
1114: cpu_x86_load_seg(env, R_ES, __USER_DS);
1115: cpu_x86_load_seg(env, R_FS, __USER_DS);
1116: cpu_x86_load_seg(env, R_GS, __USER_DS);
1117: /* This hack makes Wine work... */
1118: env->segs[R_FS].selector = 0;
1119: #else
1120: cpu_x86_load_seg(env, R_DS, 0);
1121: cpu_x86_load_seg(env, R_ES, 0);
1122: cpu_x86_load_seg(env, R_FS, 0);
1123: cpu_x86_load_seg(env, R_GS, 0);
1124: #endif
1125: #elif defined(TARGET_SPARC)
1.1 root 1126: {
1127: int i;
1128: env->pc = regs->pc;
1129: env->npc = regs->npc;
1130: env->y = regs->y;
1131: for(i = 0; i < 8; i++)
1132: env->gregs[i] = regs->u_regs[i];
1133: for(i = 0; i < 8; i++)
1134: env->regwptr[i] = regs->u_regs[i + 8];
1135: }
1136: #else
1137: #error unsupported target CPU
1138: #endif
1139:
1140: if (gdbstub_port) {
1141: gdbserver_start (gdbstub_port);
1142: gdb_handlesig(env, 0);
1143: }
1.1.1.3 root 1144: cpu_loop(env);
1.1 root 1145: /* never exits */
1146: return 0;
1147: }
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