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Strace fallback for unknown syscalls.
[qemu/mini2440.git] / darwin-user / main.c
blob20fde196875315f1dcc3583dc77c9e3c55442a5e
1 /*
2 * qemu user main
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 * Copyright (c) 2006 Pierre d'Herbemont
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21 #include <stdlib.h>
22 #include <stdio.h>
23 #include <stdarg.h>
24 #include <string.h>
25 #include <errno.h>
26 #include <unistd.h>
27
28 #include <sys/syscall.h>
29 #include <sys/mman.h>
30
31 #include "qemu.h"
32
33 #define DEBUG_LOGFILE "/tmp/qemu.log"
34
35 #ifdef __APPLE__
36 #include <crt_externs.h>
37 # define environ (*_NSGetEnviron())
38 #endif
39
40 #include <mach/mach_init.h>
41 #include <mach/vm_map.h>
42
43 const char *interp_prefix = "";
44
45 asm(".zerofill __STD_PROG_ZONE, __STD_PROG_ZONE, __std_prog_zone, 0x0dfff000");
46
47 /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
48 we allocate a bigger stack. Need a better solution, for example
49 by remapping the process stack directly at the right place */
50 unsigned long stack_size = 512 * 1024;
51
52 void qerror(const char *fmt, ...)
53 {
54 va_list ap;
55
56 va_start(ap, fmt);
57 vfprintf(stderr, fmt, ap);
58 va_end(ap);
59 fprintf(stderr, "\n");
60 exit(1);
61 }
62
63 void gemu_log(const char *fmt, ...)
64 {
65 va_list ap;
66
67 va_start(ap, fmt);
68 vfprintf(stderr, fmt, ap);
69 va_end(ap);
70 }
71
72 void cpu_outb(CPUState *env, int addr, int val)
73 {
74 fprintf(stderr, "outb: port=0x%04x, data=%02x\n", addr, val);
75 }
76
77 void cpu_outw(CPUState *env, int addr, int val)
78 {
79 fprintf(stderr, "outw: port=0x%04x, data=%04x\n", addr, val);
80 }
81
82 void cpu_outl(CPUState *env, int addr, int val)
83 {
84 fprintf(stderr, "outl: port=0x%04x, data=%08x\n", addr, val);
85 }
86
87 int cpu_inb(CPUState *env, int addr)
88 {
89 fprintf(stderr, "inb: port=0x%04x\n", addr);
90 return 0;
91 }
92
93 int cpu_inw(CPUState *env, int addr)
94 {
95 fprintf(stderr, "inw: port=0x%04x\n", addr);
96 return 0;
97 }
98
99 int cpu_inl(CPUState *env, int addr)
100 {
101 fprintf(stderr, "inl: port=0x%04x\n", addr);
102 return 0;
103 }
104
105 int cpu_get_pic_interrupt(CPUState *env)
106 {
107 return -1;
108 }
109 #ifdef TARGET_PPC
110
111 static inline uint64_t cpu_ppc_get_tb (CPUState *env)
112 {
113 /* TO FIX */
114 return 0;
115 }
116
117 uint32_t cpu_ppc_load_tbl (CPUState *env)
118 {
119 return cpu_ppc_get_tb(env) & 0xFFFFFFFF;
120 }
121
122 uint32_t cpu_ppc_load_tbu (CPUState *env)
123 {
124 return cpu_ppc_get_tb(env) >> 32;
125 }
126
127 uint32_t cpu_ppc_load_atbl (CPUState *env)
128 {
129 return cpu_ppc_get_tb(env) & 0xFFFFFFFF;
130 }
131
132 uint32_t cpu_ppc_load_atbu (CPUState *env)
133 {
134 return cpu_ppc_get_tb(env) >> 32;
135 }
136
137 uint32_t cpu_ppc601_load_rtcu (CPUState *env)
138 {
139 cpu_ppc_load_tbu(env);
140 }
141
142 uint32_t cpu_ppc601_load_rtcl (CPUState *env)
143 {
144 return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
145 }
146
147 /* XXX: to be fixed */
148 int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, target_ulong *valp)
149 {
150 return -1;
151 }
152
153 int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, target_ulong val)
154 {
155 return -1;
156 }
157
158 #define EXCP_DUMP(env, fmt, args...) \
159 do { \
160 fprintf(stderr, fmt , ##args); \
161 cpu_dump_state(env, stderr, fprintf, 0); \
162 if (loglevel != 0) { \
163 fprintf(logfile, fmt , ##args); \
164 cpu_dump_state(env, logfile, fprintf, 0); \
165 } \
166 } while (0)
167
168 void cpu_loop(CPUPPCState *env)
169 {
170 int trapnr;
171 uint32_t ret;
172 target_siginfo_t info;
173
174 for(;;) {
175 trapnr = cpu_ppc_exec(env);
176 switch(trapnr) {
177 case POWERPC_EXCP_NONE:
178 /* Just go on */
179 break;
180 case POWERPC_EXCP_CRITICAL: /* Critical input */
181 cpu_abort(env, "Critical interrupt while in user mode. "
182 "Aborting\n");
183 break;
184 case POWERPC_EXCP_MCHECK: /* Machine check exception */
185 cpu_abort(env, "Machine check exception while in user mode. "
186 "Aborting\n");
187 break;
188 case POWERPC_EXCP_DSI: /* Data storage exception */
189 #ifndef DAR
190 /* To deal with multiple qemu header version as host for the darwin-user code */
191 # define DAR SPR_DAR
192 #endif
193 EXCP_DUMP(env, "Invalid data memory access: 0x" ADDRX "\n",
194 env->spr[SPR_DAR]);
195 /* Handle this via the gdb */
196 gdb_handlesig (env, SIGSEGV);
197
198 info.si_addr = (void*)env->nip;
199 queue_signal(info.si_signo, &info);
200 break;
201 case POWERPC_EXCP_ISI: /* Instruction storage exception */
202 EXCP_DUMP(env, "Invalid instruction fetch: 0x\n" ADDRX "\n",
203 env->spr[SPR_DAR]);
204 /* Handle this via the gdb */
205 gdb_handlesig (env, SIGSEGV);
206
207 info.si_addr = (void*)(env->nip - 4);
208 queue_signal(info.si_signo, &info);
209 break;
210 case POWERPC_EXCP_EXTERNAL: /* External input */
211 cpu_abort(env, "External interrupt while in user mode. "
212 "Aborting\n");
213 break;
214 case POWERPC_EXCP_ALIGN: /* Alignment exception */
215 EXCP_DUMP(env, "Unaligned memory access\n");
216 info.si_errno = 0;
217 info.si_code = BUS_ADRALN;
218 info.si_addr = (void*)(env->nip - 4);
219 queue_signal(info.si_signo, &info);
220 break;
221 case POWERPC_EXCP_PROGRAM: /* Program exception */
222 /* XXX: check this */
223 switch (env->error_code & ~0xF) {
224 case POWERPC_EXCP_FP:
225 EXCP_DUMP(env, "Floating point program exception\n");
226 /* Set FX */
227 info.si_signo = SIGFPE;
228 info.si_errno = 0;
229 switch (env->error_code & 0xF) {
230 case POWERPC_EXCP_FP_OX:
231 info.si_code = FPE_FLTOVF;
232 break;
233 case POWERPC_EXCP_FP_UX:
234 info.si_code = FPE_FLTUND;
235 break;
236 case POWERPC_EXCP_FP_ZX:
237 case POWERPC_EXCP_FP_VXZDZ:
238 info.si_code = FPE_FLTDIV;
239 break;
240 case POWERPC_EXCP_FP_XX:
241 info.si_code = FPE_FLTRES;
242 break;
243 case POWERPC_EXCP_FP_VXSOFT:
244 info.si_code = FPE_FLTINV;
245 break;
246 case POWERPC_EXCP_FP_VXSNAN:
247 case POWERPC_EXCP_FP_VXISI:
248 case POWERPC_EXCP_FP_VXIDI:
249 case POWERPC_EXCP_FP_VXIMZ:
250 case POWERPC_EXCP_FP_VXVC:
251 case POWERPC_EXCP_FP_VXSQRT:
252 case POWERPC_EXCP_FP_VXCVI:
253 info.si_code = FPE_FLTSUB;
254 break;
255 default:
256 EXCP_DUMP(env, "Unknown floating point exception (%02x)\n",
257 env->error_code);
258 break;
259 }
260 break;
261 case POWERPC_EXCP_INVAL:
262 EXCP_DUMP(env, "Invalid instruction\n");
263 info.si_signo = SIGILL;
264 info.si_errno = 0;
265 switch (env->error_code & 0xF) {
266 case POWERPC_EXCP_INVAL_INVAL:
267 info.si_code = ILL_ILLOPC;
268 break;
269 case POWERPC_EXCP_INVAL_LSWX:
270 info.si_code = ILL_ILLOPN;
271 break;
272 case POWERPC_EXCP_INVAL_SPR:
273 info.si_code = ILL_PRVREG;
274 break;
275 case POWERPC_EXCP_INVAL_FP:
276 info.si_code = ILL_COPROC;
277 break;
278 default:
279 EXCP_DUMP(env, "Unknown invalid operation (%02x)\n",
280 env->error_code & 0xF);
281 info.si_code = ILL_ILLADR;
282 break;
283 }
284 /* Handle this via the gdb */
285 gdb_handlesig (env, SIGSEGV);
286 break;
287 case POWERPC_EXCP_PRIV:
288 EXCP_DUMP(env, "Privilege violation\n");
289 info.si_signo = SIGILL;
290 info.si_errno = 0;
291 switch (env->error_code & 0xF) {
292 case POWERPC_EXCP_PRIV_OPC:
293 info.si_code = ILL_PRVOPC;
294 break;
295 case POWERPC_EXCP_PRIV_REG:
296 info.si_code = ILL_PRVREG;
297 break;
298 default:
299 EXCP_DUMP(env, "Unknown privilege violation (%02x)\n",
300 env->error_code & 0xF);
301 info.si_code = ILL_PRVOPC;
302 break;
303 }
304 break;
305 case POWERPC_EXCP_TRAP:
306 cpu_abort(env, "Tried to call a TRAP\n");
307 break;
308 default:
309 /* Should not happen ! */
310 cpu_abort(env, "Unknown program exception (%02x)\n",
311 env->error_code);
312 break;
313 }
314 info.si_addr = (void*)(env->nip - 4);
315 queue_signal(info.si_signo, &info);
316 break;
317 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
318 EXCP_DUMP(env, "No floating point allowed\n");
319 info.si_signo = SIGILL;
320 info.si_errno = 0;
321 info.si_code = ILL_COPROC;
322 info.si_addr = (void*)(env->nip - 4);
323 queue_signal(info.si_signo, &info);
324 break;
325 case POWERPC_EXCP_SYSCALL: /* System call exception */
326 cpu_abort(env, "Syscall exception while in user mode. "
327 "Aborting\n");
328 break;
329 case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
330 EXCP_DUMP(env, "No APU instruction allowed\n");
331 info.si_signo = SIGILL;
332 info.si_errno = 0;
333 info.si_code = ILL_COPROC;
334 info.si_addr = (void*)(env->nip - 4);
335 queue_signal(info.si_signo, &info);
336 break;
337 case POWERPC_EXCP_DECR: /* Decrementer exception */
338 cpu_abort(env, "Decrementer interrupt while in user mode. "
339 "Aborting\n");
340 break;
341 case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
342 cpu_abort(env, "Fix interval timer interrupt while in user mode. "
343 "Aborting\n");
344 break;
345 case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
346 cpu_abort(env, "Watchdog timer interrupt while in user mode. "
347 "Aborting\n");
348 break;
349 case POWERPC_EXCP_DTLB: /* Data TLB error */
350 cpu_abort(env, "Data TLB exception while in user mode. "
351 "Aborting\n");
352 break;
353 case POWERPC_EXCP_ITLB: /* Instruction TLB error */
354 cpu_abort(env, "Instruction TLB exception while in user mode. "
355 "Aborting\n");
356 break;
357 case POWERPC_EXCP_DEBUG: /* Debug interrupt */
358 gdb_handlesig (env, SIGTRAP);
359 break;
360 case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */
361 EXCP_DUMP(env, "No SPE/floating-point instruction allowed\n");
362 info.si_signo = SIGILL;
363 info.si_errno = 0;
364 info.si_code = ILL_COPROC;
365 info.si_addr = (void*)(env->nip - 4);
366 queue_signal(info.si_signo, &info);
367 break;
368 case POWERPC_EXCP_EFPDI: /* Embedded floating-point data IRQ */
369 cpu_abort(env, "Embedded floating-point data IRQ not handled\n");
370 break;
371 case POWERPC_EXCP_EFPRI: /* Embedded floating-point round IRQ */
372 cpu_abort(env, "Embedded floating-point round IRQ not handled\n");
373 break;
374 case POWERPC_EXCP_EPERFM: /* Embedded performance monitor IRQ */
375 cpu_abort(env, "Performance monitor exception not handled\n");
376 break;
377 case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
378 cpu_abort(env, "Doorbell interrupt while in user mode. "
379 "Aborting\n");
380 break;
381 case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
382 cpu_abort(env, "Doorbell critical interrupt while in user mode. "
383 "Aborting\n");
384 break;
385 case POWERPC_EXCP_RESET: /* System reset exception */
386 cpu_abort(env, "Reset interrupt while in user mode. "
387 "Aborting\n");
388 break;
389 case POWERPC_EXCP_DSEG: /* Data segment exception */
390 cpu_abort(env, "Data segment exception while in user mode. "
391 "Aborting\n");
392 break;
393 case POWERPC_EXCP_ISEG: /* Instruction segment exception */
394 cpu_abort(env, "Instruction segment exception "
395 "while in user mode. Aborting\n");
396 break;
397 case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
398 cpu_abort(env, "Hypervisor decrementer interrupt "
399 "while in user mode. Aborting\n");
400 break;
401 case POWERPC_EXCP_TRACE: /* Trace exception */
402 /* Nothing to do:
403 * we use this exception to emulate step-by-step execution mode.
404 */
405 break;
406 case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
407 cpu_abort(env, "Hypervisor data storage exception "
408 "while in user mode. Aborting\n");
409 break;
410 case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */
411 cpu_abort(env, "Hypervisor instruction storage exception "
412 "while in user mode. Aborting\n");
413 break;
414 case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
415 cpu_abort(env, "Hypervisor data segment exception "
416 "while in user mode. Aborting\n");
417 break;
418 case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */
419 cpu_abort(env, "Hypervisor instruction segment exception "
420 "while in user mode. Aborting\n");
421 break;
422 case POWERPC_EXCP_VPU: /* Vector unavailable exception */
423 EXCP_DUMP(env, "No Altivec instructions allowed\n");
424 info.si_signo = SIGILL;
425 info.si_errno = 0;
426 info.si_code = ILL_COPROC;
427 info.si_addr = (void*)(env->nip - 4);
428 queue_signal(info.si_signo, &info);
429 break;
430 case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */
431 cpu_abort(env, "Programable interval timer interrupt "
432 "while in user mode. Aborting\n");
433 break;
434 case POWERPC_EXCP_IO: /* IO error exception */
435 cpu_abort(env, "IO error exception while in user mode. "
436 "Aborting\n");
437 break;
438 case POWERPC_EXCP_RUNM: /* Run mode exception */
439 cpu_abort(env, "Run mode exception while in user mode. "
440 "Aborting\n");
441 break;
442 case POWERPC_EXCP_EMUL: /* Emulation trap exception */
443 cpu_abort(env, "Emulation trap exception not handled\n");
444 break;
445 case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
446 cpu_abort(env, "Instruction fetch TLB exception "
447 "while in user-mode. Aborting");
448 break;
449 case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
450 cpu_abort(env, "Data load TLB exception while in user-mode. "
451 "Aborting");
452 break;
453 case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
454 cpu_abort(env, "Data store TLB exception while in user-mode. "
455 "Aborting");
456 break;
457 case POWERPC_EXCP_FPA: /* Floating-point assist exception */
458 cpu_abort(env, "Floating-point assist exception not handled\n");
459 break;
460 case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
461 cpu_abort(env, "Instruction address breakpoint exception "
462 "not handled\n");
463 break;
464 case POWERPC_EXCP_SMI: /* System management interrupt */
465 cpu_abort(env, "System management interrupt while in user mode. "
466 "Aborting\n");
467 break;
468 case POWERPC_EXCP_THERM: /* Thermal interrupt */
469 cpu_abort(env, "Thermal interrupt interrupt while in user mode. "
470 "Aborting\n");
471 break;
472 case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */
473 cpu_abort(env, "Performance monitor exception not handled\n");
474 break;
475 case POWERPC_EXCP_VPUA: /* Vector assist exception */
476 cpu_abort(env, "Vector assist exception not handled\n");
477 break;
478 case POWERPC_EXCP_SOFTP: /* Soft patch exception */
479 cpu_abort(env, "Soft patch exception not handled\n");
480 break;
481 case POWERPC_EXCP_MAINT: /* Maintenance exception */
482 cpu_abort(env, "Maintenance exception while in user mode. "
483 "Aborting\n");
484 break;
485 case POWERPC_EXCP_STOP: /* stop translation */
486 /* We did invalidate the instruction cache. Go on */
487 break;
488 case POWERPC_EXCP_BRANCH: /* branch instruction: */
489 /* We just stopped because of a branch. Go on */
490 break;
491 case POWERPC_EXCP_SYSCALL_USER:
492 /* system call in user-mode emulation */
493 /* system call */
494 if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0)
495 ret = do_unix_syscall(env, env->gpr[0]/*, env->gpr[3], env->gpr[4],
496 env->gpr[5], env->gpr[6], env->gpr[7],
497 env->gpr[8], env->gpr[9], env->gpr[10]*/);
498 else if(((int)env->gpr[0])<0)
499 ret = do_mach_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
500 env->gpr[5], env->gpr[6], env->gpr[7],
501 env->gpr[8], env->gpr[9], env->gpr[10]);
502 else
503 ret = do_thread_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
504 env->gpr[5], env->gpr[6], env->gpr[7],
505 env->gpr[8], env->gpr[9], env->gpr[10]);
506
507 /* Unix syscall error signaling */
508 if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0)
509 {
510 if( (int)ret < 0 )
511 env->nip += 0;
512 else
513 env->nip += 4;
514 }
515
516 /* Return value */
517 env->gpr[3] = ret;
518 break;
519 case EXCP_INTERRUPT:
520 /* just indicate that signals should be handled asap */
521 break;
522 default:
523 cpu_abort(env, "Unknown exception 0x%d. Aborting\n", trapnr);
524 break;
525 }
526 process_pending_signals(env);
527 }
528 }
529 #endif
530
531
532 #ifdef TARGET_I386
533
534 /***********************************************************/
535 /* CPUX86 core interface */
536
537 uint64_t cpu_get_tsc(CPUX86State *env)
538 {
539 return cpu_get_real_ticks();
540 }
541
542 void
543 write_dt(void *ptr, unsigned long addr, unsigned long limit,
544 int flags)
545 {
546 unsigned int e1, e2;
547 e1 = (addr << 16) | (limit & 0xffff);
548 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
549 e2 |= flags;
550 stl((uint8_t *)ptr, e1);
551 stl((uint8_t *)ptr + 4, e2);
552 }
553
554 static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
555 unsigned long addr, unsigned int sel)
556 {
557 unsigned int e1, e2;
558 e1 = (addr & 0xffff) | (sel << 16);
559 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
560 stl((uint8_t *)ptr, e1);
561 stl((uint8_t *)ptr + 4, e2);
562 }
563
564 #define GDT_TABLE_SIZE 14
565 #define LDT_TABLE_SIZE 15
566 #define IDT_TABLE_SIZE 256
567 #define TSS_SIZE 104
568 uint64_t gdt_table[GDT_TABLE_SIZE];
569 uint64_t ldt_table[LDT_TABLE_SIZE];
570 uint64_t idt_table[IDT_TABLE_SIZE];
571 uint32_t tss[TSS_SIZE];
572
573 /* only dpl matters as we do only user space emulation */
574 static void set_idt(int n, unsigned int dpl)
575 {
576 set_gate(idt_table + n, 0, dpl, 0, 0);
577 }
578
579 /* ABI convention: after a syscall if there was an error the CF flag is set */
580 static inline void set_error(CPUX86State *env, int ret)
581 {
582 if(ret<0)
583 env->eflags = env->eflags | 0x1;
584 else
585 env->eflags &= ~0x1;
586 env->regs[R_EAX] = ret;
587 }
588
589 void cpu_loop(CPUX86State *env)
590 {
591 int trapnr;
592 int ret;
593 uint8_t *pc;
594 target_siginfo_t info;
595
596 for(;;) {
597 trapnr = cpu_x86_exec(env);
598 uint32_t *params = (uint32_t *)env->regs[R_ESP];
599 switch(trapnr) {
600 case 0x79: /* Our commpage hack back door exit is here */
601 do_commpage(env, env->eip, *(params + 1), *(params + 2),
602 *(params + 3), *(params + 4),
603 *(params + 5), *(params + 6),
604 *(params + 7), *(params + 8));
605 break;
606 case 0x81: /* mach syscall */
607 {
608 ret = do_mach_syscall(env, env->regs[R_EAX],
609 *(params + 1), *(params + 2),
610 *(params + 3), *(params + 4),
611 *(params + 5), *(params + 6),
612 *(params + 7), *(params + 8));
613 set_error(env, ret);
614 break;
615 }
616 case 0x90: /* unix backdoor */
617 {
618 /* after sysenter, stack is in R_ECX, new eip in R_EDX (sysexit will flip them back)*/
619 int saved_stack = env->regs[R_ESP];
620 env->regs[R_ESP] = env->regs[R_ECX];
621
622 ret = do_unix_syscall(env, env->regs[R_EAX]);
623
624 env->regs[R_ECX] = env->regs[R_ESP];
625 env->regs[R_ESP] = saved_stack;
626
627 set_error(env, ret);
628 break;
629 }
630 case 0x80: /* unix syscall */
631 {
632 ret = do_unix_syscall(env, env->regs[R_EAX]/*,
633 *(params + 1), *(params + 2),
634 *(params + 3), *(params + 4),
635 *(params + 5), *(params + 6),
636 *(params + 7), *(params + 8)*/);
637 set_error(env, ret);
638 break;
639 }
640 case 0x82: /* thread syscall */
641 {
642 ret = do_thread_syscall(env, env->regs[R_EAX],
643 *(params + 1), *(params + 2),
644 *(params + 3), *(params + 4),
645 *(params + 5), *(params + 6),
646 *(params + 7), *(params + 8));
647 set_error(env, ret);
648 break;
649 }
650 case EXCP0B_NOSEG:
651 case EXCP0C_STACK:
652 info.si_signo = SIGBUS;
653 info.si_errno = 0;
654 info.si_code = BUS_NOOP;
655 info.si_addr = 0;
656 gdb_handlesig (env, SIGBUS);
657 queue_signal(info.si_signo, &info);
658 break;
659 case EXCP0D_GPF:
660 info.si_signo = SIGSEGV;
661 info.si_errno = 0;
662 info.si_code = SEGV_NOOP;
663 info.si_addr = 0;
664 gdb_handlesig (env, SIGSEGV);
665 queue_signal(info.si_signo, &info);
666 break;
667 case EXCP0E_PAGE:
668 info.si_signo = SIGSEGV;
669 info.si_errno = 0;
670 if (!(env->error_code & 1))
671 info.si_code = SEGV_MAPERR;
672 else
673 info.si_code = SEGV_ACCERR;
674 info.si_addr = (void*)env->cr[2];
675 gdb_handlesig (env, SIGSEGV);
676 queue_signal(info.si_signo, &info);
677 break;
678 case EXCP00_DIVZ:
679 /* division by zero */
680 info.si_signo = SIGFPE;
681 info.si_errno = 0;
682 info.si_code = FPE_INTDIV;
683 info.si_addr = (void*)env->eip;
684 gdb_handlesig (env, SIGFPE);
685 queue_signal(info.si_signo, &info);
686 break;
687 case EXCP01_SSTP:
688 case EXCP03_INT3:
689 info.si_signo = SIGTRAP;
690 info.si_errno = 0;
691 info.si_code = TRAP_BRKPT;
692 info.si_addr = (void*)env->eip;
693 gdb_handlesig (env, SIGTRAP);
694 queue_signal(info.si_signo, &info);
695 break;
696 case EXCP04_INTO:
697 case EXCP05_BOUND:
698 info.si_signo = SIGSEGV;
699 info.si_errno = 0;
700 info.si_code = SEGV_NOOP;
701 info.si_addr = 0;
702 gdb_handlesig (env, SIGSEGV);
703 queue_signal(info.si_signo, &info);
704 break;
705 case EXCP06_ILLOP:
706 info.si_signo = SIGILL;
707 info.si_errno = 0;
708 info.si_code = ILL_ILLOPN;
709 info.si_addr = (void*)env->eip;
710 gdb_handlesig (env, SIGILL);
711 queue_signal(info.si_signo, &info);
712 break;
713 case EXCP_INTERRUPT:
714 /* just indicate that signals should be handled asap */
715 break;
716 case EXCP_DEBUG:
717 {
718 int sig;
719
720 sig = gdb_handlesig (env, SIGTRAP);
721 if (sig)
722 {
723 info.si_signo = sig;
724 info.si_errno = 0;
725 info.si_code = TRAP_BRKPT;
726 queue_signal(info.si_signo, &info);
727 }
728 }
729 break;
730 default:
731 pc = (void*)(env->segs[R_CS].base + env->eip);
732 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
733 (long)pc, trapnr);
734 abort();
735 }
736 process_pending_signals(env);
737 }
738 }
739 #endif
740
741 void usage(void)
742 {
743 printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n"
744 "usage: qemu-" TARGET_ARCH " [-h] [-d opts] [-L path] [-s size] program [arguments...]\n"
745 "Darwin CPU emulator (compiled for %s emulation)\n"
746 "\n"
747 "-h print this help\n"
748 "-L path set the %s library path (default='%s')\n"
749 "-s size set the stack size in bytes (default=%ld)\n"
750 "\n"
751 "debug options:\n"
752 "-d options activate log (logfile='%s')\n"
753 "-g wait for gdb on port 1234\n"
754 "-p pagesize set the host page size to 'pagesize'\n",
755 TARGET_ARCH,
756 TARGET_ARCH,
757 interp_prefix,
758 stack_size,
759 DEBUG_LOGFILE);
760 _exit(1);
761 }
762
763 /* XXX: currently only used for async signals (see signal.c) */
764 CPUState *global_env;
765 /* used only if single thread */
766 CPUState *cpu_single_env = NULL;
767
768 /* used to free thread contexts */
769 TaskState *first_task_state;
770
771 int main(int argc, char **argv)
772 {
773 const char *filename;
774 struct target_pt_regs regs1, *regs = &regs1;
775 TaskState ts1, *ts = &ts1;
776 CPUState *env;
777 int optind;
778 short use_gdbstub = 0;
779 const char *r;
780 const char *cpu_model;
781
782 if (argc <= 1)
783 usage();
784
785 /* init debug */
786 cpu_set_log_filename(DEBUG_LOGFILE);
787
788 optind = 1;
789 for(;;) {
790 if (optind >= argc)
791 break;
792 r = argv[optind];
793 if (r[0] != '-')
794 break;
795 optind++;
796 r++;
797 if (!strcmp(r, "-")) {
798 break;
799 } else if (!strcmp(r, "d")) {
800 int mask;
801 CPULogItem *item;
802
803 if (optind >= argc)
804 break;
805
806 r = argv[optind++];
807 mask = cpu_str_to_log_mask(r);
808 if (!mask) {
809 printf("Log items (comma separated):\n");
810 for(item = cpu_log_items; item->mask != 0; item++) {
811 printf("%-10s %s\n", item->name, item->help);
812 }
813 exit(1);
814 }
815 cpu_set_log(mask);
816 } else if (!strcmp(r, "s")) {
817 r = argv[optind++];
818 stack_size = strtol(r, (char **)&r, 0);
819 if (stack_size <= 0)
820 usage();
821 if (*r == 'M')
822 stack_size *= 1024 * 1024;
823 else if (*r == 'k' || *r == 'K')
824 stack_size *= 1024;
825 } else if (!strcmp(r, "L")) {
826 interp_prefix = argv[optind++];
827 } else if (!strcmp(r, "p")) {
828 qemu_host_page_size = atoi(argv[optind++]);
829 if (qemu_host_page_size == 0 ||
830 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
831 fprintf(stderr, "page size must be a power of two\n");
832 exit(1);
833 }
834 } else
835 if (!strcmp(r, "g")) {
836 use_gdbstub = 1;
837 } else if (!strcmp(r, "cpu")) {
838 cpu_model = argv[optind++];
839 if (strcmp(cpu_model, "?") == 0) {
840 /* XXX: implement xxx_cpu_list for targets that still miss it */
841 #if defined(cpu_list)
842 cpu_list(stdout, &fprintf);
843 #endif
844 _exit(1);
845 }
846 } else
847 {
848 usage();
849 }
850 }
851 if (optind >= argc)
852 usage();
853 filename = argv[optind];
854
855 /* Zero out regs */
856 memset(regs, 0, sizeof(struct target_pt_regs));
857
858 if (cpu_model == NULL) {
859 #if defined(TARGET_I386)
860 #ifdef TARGET_X86_64
861 cpu_model = "qemu64";
862 #else
863 cpu_model = "qemu32";
864 #endif
865 #elif defined(TARGET_PPC)
866 #ifdef TARGET_PPC64
867 cpu_model = "970";
868 #else
869 cpu_model = "750";
870 #endif
871 #else
872 #error unsupported CPU
873 #endif
874 }
875
876 cpu_exec_init_all(0);
877 /* NOTE: we need to init the CPU at this stage to get
878 qemu_host_page_size */
879 env = cpu_init(cpu_model);
880
881 printf("Starting %s with qemu\n----------------\n", filename);
882
883 commpage_init();
884
885 if (mach_exec(filename, argv+optind, environ, regs) != 0) {
886 printf("Error loading %s\n", filename);
887 _exit(1);
888 }
889
890 syscall_init();
891 signal_init();
892 global_env = env;
893
894 /* build Task State */
895 memset(ts, 0, sizeof(TaskState));
896 env->opaque = ts;
897 ts->used = 1;
898 env->user_mode_only = 1;
899
900 #if defined(TARGET_I386)
901 cpu_x86_set_cpl(env, 3);
902
903 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
904 env->hflags |= HF_PE_MASK;
905
906 if (env->cpuid_features & CPUID_SSE) {
907 env->cr[4] |= CR4_OSFXSR_MASK;
908 env->hflags |= HF_OSFXSR_MASK;
909 }
910
911 /* flags setup : we activate the IRQs by default as in user mode */
912 env->eflags |= IF_MASK;
913
914 /* darwin register setup */
915 env->regs[R_EAX] = regs->eax;
916 env->regs[R_EBX] = regs->ebx;
917 env->regs[R_ECX] = regs->ecx;
918 env->regs[R_EDX] = regs->edx;
919 env->regs[R_ESI] = regs->esi;
920 env->regs[R_EDI] = regs->edi;
921 env->regs[R_EBP] = regs->ebp;
922 env->regs[R_ESP] = regs->esp;
923 env->eip = regs->eip;
924
925 /* Darwin LDT setup */
926 /* 2 - User code segment
927 3 - User data segment
928 4 - User cthread */
929 bzero(ldt_table, LDT_TABLE_SIZE * sizeof(ldt_table[0]));
930 env->ldt.base = (uint32_t) ldt_table;
931 env->ldt.limit = sizeof(ldt_table) - 1;
932
933 write_dt(ldt_table + 2, 0, 0xfffff,
934 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
935 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
936 write_dt(ldt_table + 3, 0, 0xfffff,
937 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
938 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
939 write_dt(ldt_table + 4, 0, 0xfffff,
940 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
941 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
942
943 /* Darwin GDT setup.
944 * has changed a lot between old Darwin/x86 (pre-Mac Intel) and Mac OS X/x86,
945 now everything is done via int 0x81(mach) int 0x82 (thread) and sysenter/sysexit(unix) */
946 bzero(gdt_table, sizeof(gdt_table));
947 env->gdt.base = (uint32_t)gdt_table;
948 env->gdt.limit = sizeof(gdt_table) - 1;
949
950 /* Set up a back door to handle sysenter syscalls (unix) */
951 char * syscallbackdoor = malloc(64);
952 page_set_flags((int)syscallbackdoor, (int)syscallbackdoor + 64, PROT_EXEC | PROT_READ | PAGE_VALID);
953
954 int i = 0;
955 syscallbackdoor[i++] = 0xcd;
956 syscallbackdoor[i++] = 0x90; /* int 0x90 */
957 syscallbackdoor[i++] = 0x0F;
958 syscallbackdoor[i++] = 0x35; /* sysexit */
959
960 /* Darwin sysenter/sysexit setup */
961 env->sysenter_cs = 0x1; //XXX
962 env->sysenter_eip = (int)syscallbackdoor;
963 env->sysenter_esp = (int)malloc(64);
964
965 /* Darwin TSS setup
966 This must match up with GDT[4] */
967 env->tr.base = (uint32_t) tss;
968 env->tr.limit = sizeof(tss) - 1;
969 env->tr.flags = DESC_P_MASK | (0x9 << DESC_TYPE_SHIFT);
970 stw(tss + 2, 0x10); // ss0 = 0x10 = GDT[2] = Kernel Data Segment
971
972 /* Darwin interrupt setup */
973 bzero(idt_table, sizeof(idt_table));
974 env->idt.base = (uint32_t) idt_table;
975 env->idt.limit = sizeof(idt_table) - 1;
976 set_idt(0, 0);
977 set_idt(1, 0);
978 set_idt(2, 0);
979 set_idt(3, 3);
980 set_idt(4, 3);
981 set_idt(5, 3);
982 set_idt(6, 0);
983 set_idt(7, 0);
984 set_idt(8, 0);
985 set_idt(9, 0);
986 set_idt(10, 0);
987 set_idt(11, 0);
988 set_idt(12, 0);
989 set_idt(13, 0);
990 set_idt(14, 0);
991 set_idt(15, 0);
992 set_idt(16, 0);
993 set_idt(17, 0);
994 set_idt(18, 0);
995 set_idt(19, 0);
996 /* Syscalls are done via
997 int 0x80 (unix) (rarely used)
998 int 0x81 (mach)
999 int 0x82 (thread)
1000 int 0x83 (diag) (not handled here)
1001 sysenter/sysexit (unix) -> we redirect that to int 0x90 */
1002 set_idt(0x79, 3); /* Commpage hack, here is our backdoor interrupt */
1003 set_idt(0x80, 3); /* Unix Syscall */
1004 set_idt(0x81, 3); /* Mach Syscalls */
1005 set_idt(0x82, 3); /* thread Syscalls */
1006
1007 set_idt(0x90, 3); /* qemu-darwin-user's Unix syscalls backdoor */
1008
1009
1010 cpu_x86_load_seg(env, R_CS, __USER_CS);
1011 cpu_x86_load_seg(env, R_DS, __USER_DS);
1012 cpu_x86_load_seg(env, R_ES, __USER_DS);
1013 cpu_x86_load_seg(env, R_SS, __USER_DS);
1014 cpu_x86_load_seg(env, R_FS, __USER_DS);
1015 cpu_x86_load_seg(env, R_GS, __USER_DS);
1016
1017 #elif defined(TARGET_PPC)
1018 {
1019 int i;
1020
1021 #if defined(TARGET_PPC64)
1022 #if defined(TARGET_ABI32)
1023 env->msr &= ~((target_ulong)1 << MSR_SF);
1024 #else
1025 env->msr |= (target_ulong)1 << MSR_SF;
1026 #endif
1027 #endif
1028 env->nip = regs->nip;
1029 for(i = 0; i < 32; i++) {
1030 env->gpr[i] = regs->gpr[i];
1031 }
1032 }
1033 #else
1034 #error unsupported target CPU
1035 #endif
1036
1037 if (use_gdbstub) {
1038 printf("Waiting for gdb Connection on port 1234...\n");
1039 gdbserver_start (1234);
1040 gdb_handlesig(env, 0);
1041 }
1042
1043 cpu_loop(env);
1044 /* never exits */
1045 return 0;
1046 }
Samsung s3c2440 and arm920t support for the mini2440 dev board