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Make PowerPC cache line size implementation dependant.
[qemu.git] / darwin-user / main.c
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831b7825
TS		 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
43const char *interp_prefix = "";
44
45asm(".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 */
50unsigned long stack_size = 512 * 1024;
51
52void 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
63void 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
72void cpu_outb(CPUState *env, int addr, int val)
73{
74 fprintf(stderr, "outb: port=0x%04x, data=%02x\n", addr, val);
75}
76
77void cpu_outw(CPUState *env, int addr, int val)
78{
79 fprintf(stderr, "outw: port=0x%04x, data=%04x\n", addr, val);
80}
81
82void cpu_outl(CPUState *env, int addr, int val)
83{
84 fprintf(stderr, "outl: port=0x%04x, data=%08x\n", addr, val);
85}
86
87int cpu_inb(CPUState *env, int addr)
88{
89 fprintf(stderr, "inb: port=0x%04x\n", addr);
90 return 0;
91}
92
93int cpu_inw(CPUState *env, int addr)
94{
95 fprintf(stderr, "inw: port=0x%04x\n", addr);
96 return 0;
97}
98
99int cpu_inl(CPUState *env, int addr)
100{
101 fprintf(stderr, "inl: port=0x%04x\n", addr);
102 return 0;
103}
104
105int cpu_get_pic_interrupt(CPUState *env)
106{
107 return -1;
108}
109#ifdef TARGET_PPC
110
111static inline uint64_t cpu_ppc_get_tb (CPUState *env)
112{
113 /* TO FIX */
114 return 0;
115}
116
117uint32_t cpu_ppc_load_tbl (CPUState *env)
118{
119 return cpu_ppc_get_tb(env) & 0xFFFFFFFF;
120}
121
122uint32_t cpu_ppc_load_tbu (CPUState *env)
123{
124 return cpu_ppc_get_tb(env) >> 32;
125}
126
a062e36c 127uint32_t cpu_ppc_load_atbl (CPUState *env)
831b7825 128{
a062e36c 129 return cpu_ppc_get_tb(env) & 0xFFFFFFFF;
831b7825
TS		 130}
131
a062e36c 132uint32_t cpu_ppc_load_atbu (CPUState *env)
c0009975 133{
a062e36c 134 return cpu_ppc_get_tb(env) >> 32;
c0009975
TS		 135}
136
137uint32_t cpu_ppc601_load_rtcu (CPUState *env)
138{
139 cpu_ppc_load_tbu(env);
140}
141
142uint32_t cpu_ppc601_load_rtcl (CPUState *env)
143{
144 return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
145}
146
e1833e1f
JM		 147/* XXX: to be fixed */
148int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, target_ulong *valp)
149{
150 return -1;
151}
152
153int 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...) \
159do { \
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
831b7825
TS		 168void 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);
831b7825 176 switch(trapnr) {
e1833e1f
JM		 177 case POWERPC_EXCP_NONE:
178 /* Just go on */
831b7825 179 break;
e1833e1f
JM		 180 case POWERPC_EXCP_CRITICAL: /* Critical input */
181 cpu_abort(env, "Critical interrupt while in user mode. "
182 "Aborting\n");
831b7825 183 break;
e1833e1f
JM		 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 */
831b7825
TS		 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
e1833e1f
JM		 193 EXCP_DUMP(env, "Invalid data memory access: 0x" ADDRX "\n",
194 env->spr[SPR_DAR]);
831b7825
TS		 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;
e1833e1f
JM		 201 case POWERPC_EXCP_ISI: /* Instruction storage exception */
202 EXCP_DUMP(env, "Invalid instruction fetch: 0x\n" ADDRX "\n",
203 env->spr[SPR_DAR]);
831b7825
TS		 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;
e1833e1f
JM		 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");
831b7825
TS		 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;
e1833e1f
JM		 221 case POWERPC_EXCP_PROGRAM: /* Program exception */
222 /* XXX: check this */
831b7825 223 switch (env->error_code & ~0xF) {
e1833e1f
JM		 224 case POWERPC_EXCP_FP:
225 EXCP_DUMP(env, "Floating point program exception\n");
226 /* Set FX */
227 env->fpscr[7] |= 0x8;
228 /* Finally, update FEX */
229 if ((((env->fpscr[7] & 0x3) << 3) | (env->fpscr[6] >> 1)) &
230 ((env->fpscr[1] << 1) | (env->fpscr[0] >> 3)))
231 env->fpscr[7] |= 0x4;
232 info.si_signo = SIGFPE;
233 info.si_errno = 0;
234 switch (env->error_code & 0xF) {
235 case POWERPC_EXCP_FP_OX:
236 info.si_code = FPE_FLTOVF;
237 break;
238 case POWERPC_EXCP_FP_UX:
239 info.si_code = FPE_FLTUND;
240 break;
241 case POWERPC_EXCP_FP_ZX:
242 case POWERPC_EXCP_FP_VXZDZ:
243 info.si_code = FPE_FLTDIV;
244 break;
245 case POWERPC_EXCP_FP_XX:
246 info.si_code = FPE_FLTRES;
247 break;
248 case POWERPC_EXCP_FP_VXSOFT:
249 info.si_code = FPE_FLTINV;
250 break;
251 case POWERPC_EXCP_FP_VXNAN:
252 case POWERPC_EXCP_FP_VXISI:
253 case POWERPC_EXCP_FP_VXIDI:
254 case POWERPC_EXCP_FP_VXIMZ:
255 case POWERPC_EXCP_FP_VXVC:
256 case POWERPC_EXCP_FP_VXSQRT:
257 case POWERPC_EXCP_FP_VXCVI:
258 info.si_code = FPE_FLTSUB;
831b7825 259 break;
831b7825 260 default:
e1833e1f
JM		 261 EXCP_DUMP(env, "Unknown floating point exception (%02x)\n",
262 env->error_code);
263 break;
264 }
265 break;
266 case POWERPC_EXCP_INVAL:
267 EXCP_DUMP(env, "Invalid instruction\n");
268 info.si_signo = SIGILL;
269 info.si_errno = 0;
270 switch (env->error_code & 0xF) {
271 case POWERPC_EXCP_INVAL_INVAL:
272 info.si_code = ILL_ILLOPC;
273 break;
274 case POWERPC_EXCP_INVAL_LSWX:
275 info.si_code = ILL_ILLOPN;
276 break;
277 case POWERPC_EXCP_INVAL_SPR:
278 info.si_code = ILL_PRVREG;
279 break;
280 case POWERPC_EXCP_INVAL_FP:
281 info.si_code = ILL_COPROC;
282 break;
283 default:
284 EXCP_DUMP(env, "Unknown invalid operation (%02x)\n",
285 env->error_code & 0xF);
286 info.si_code = ILL_ILLADR;
287 break;
288 }
289 /* Handle this via the gdb */
290 gdb_handlesig (env, SIGSEGV);
291 break;
292 case POWERPC_EXCP_PRIV:
293 EXCP_DUMP(env, "Privilege violation\n");
294 info.si_signo = SIGILL;
295 info.si_errno = 0;
296 switch (env->error_code & 0xF) {
297 case POWERPC_EXCP_PRIV_OPC:
298 info.si_code = ILL_PRVOPC;
299 break;
300 case POWERPC_EXCP_PRIV_REG:
301 info.si_code = ILL_PRVREG;
302 break;
303 default:
304 EXCP_DUMP(env, "Unknown privilege violation (%02x)\n",
305 env->error_code & 0xF);
306 info.si_code = ILL_PRVOPC;
307 break;
308 }
309 break;
310 case POWERPC_EXCP_TRAP:
311 cpu_abort(env, "Tried to call a TRAP\n");
312 break;
313 default:
314 /* Should not happen ! */
315 cpu_abort(env, "Unknown program exception (%02x)\n",
316 env->error_code);
317 break;
831b7825
TS		 318 }
319 info.si_addr = (void*)(env->nip - 4);
320 queue_signal(info.si_signo, &info);
321 break;
e1833e1f
JM		 322 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
323 EXCP_DUMP(env, "No floating point allowed\n");
324 info.si_signo = SIGILL;
831b7825
TS		 325 info.si_errno = 0;
326 info.si_code = ILL_COPROC;
327 info.si_addr = (void*)(env->nip - 4);
328 queue_signal(info.si_signo, &info);
329 break;
e1833e1f
JM		 330 case POWERPC_EXCP_SYSCALL: /* System call exception */
331 cpu_abort(env, "Syscall exception while in user mode. "
332 "Aborting\n");
831b7825 333 break;
e1833e1f
JM		 334 case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
335 EXCP_DUMP(env, "No APU instruction allowed\n");
336 info.si_signo = SIGILL;
337 info.si_errno = 0;
338 info.si_code = ILL_COPROC;
339 info.si_addr = (void*)(env->nip - 4);
340 queue_signal(info.si_signo, &info);
341 break;
342 case POWERPC_EXCP_DECR: /* Decrementer exception */
343 cpu_abort(env, "Decrementer interrupt while in user mode. "
344 "Aborting\n");
345 break;
346 case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */
347 cpu_abort(env, "Fix interval timer interrupt while in user mode. "
348 "Aborting\n");
349 break;
350 case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */
351 cpu_abort(env, "Watchdog timer interrupt while in user mode. "
352 "Aborting\n");
831b7825 353 break;
e1833e1f
JM		 354 case POWERPC_EXCP_DTLB: /* Data TLB error */
355 cpu_abort(env, "Data TLB exception while in user mode. "
356 "Aborting\n");
831b7825 357 break;
e1833e1f
JM		 358 case POWERPC_EXCP_ITLB: /* Instruction TLB error */
359 cpu_abort(env, "Instruction TLB exception while in user mode. "
360 "Aborting\n");
831b7825 361 break;
e1833e1f 362 case POWERPC_EXCP_DEBUG: /* Debug interrupt */
831b7825
TS		 363 gdb_handlesig (env, SIGTRAP);
364 break;
e1833e1f
JM		 365#if defined(TARGET_PPCEMB)
366 case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */
367 EXCP_DUMP(env, "No SPE/floating-point instruction allowed\n");
368 info.si_signo = SIGILL;
369 info.si_errno = 0;
370 info.si_code = ILL_COPROC;
371 info.si_addr = (void*)(env->nip - 4);
372 queue_signal(info.si_signo, &info);
373 break;
374 case POWERPC_EXCP_EFPDI: /* Embedded floating-point data IRQ */
375 cpu_abort(env, "Embedded floating-point data IRQ not handled\n");
376 break;
377 case POWERPC_EXCP_EFPRI: /* Embedded floating-point round IRQ */
378 cpu_abort(env, "Embedded floating-point round IRQ not handled\n");
379 break;
380 case POWERPC_EXCP_EPERFM: /* Embedded performance monitor IRQ */
381 cpu_abort(env, "Performance monitor exception not handled\n");
382 break;
383 case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */
384 cpu_abort(env, "Doorbell interrupt while in user mode. "
385 "Aborting\n");
386 break;
387 case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */
388 cpu_abort(env, "Doorbell critical interrupt while in user mode. "
389 "Aborting\n");
390 break;
391#endif /* defined(TARGET_PPCEMB) */
392 case POWERPC_EXCP_RESET: /* System reset exception */
393 cpu_abort(env, "Reset interrupt while in user mode. "
394 "Aborting\n");
395 break;
396#if defined(TARGET_PPC64) /* PowerPC 64 */
397 case POWERPC_EXCP_DSEG: /* Data segment exception */
398 cpu_abort(env, "Data segment exception while in user mode. "
399 "Aborting\n");
400 break;
401 case POWERPC_EXCP_ISEG: /* Instruction segment exception */
402 cpu_abort(env, "Instruction segment exception "
403 "while in user mode. Aborting\n");
404 break;
405#endif /* defined(TARGET_PPC64) */
406#if defined(TARGET_PPC64H) /* PowerPC 64 with hypervisor mode support */
407 case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
408 cpu_abort(env, "Hypervisor decrementer interrupt "
409 "while in user mode. Aborting\n");
410 break;
411#endif /* defined(TARGET_PPC64H) */
412 case POWERPC_EXCP_TRACE: /* Trace exception */
413 /* Nothing to do:
414 * we use this exception to emulate step-by-step execution mode.
415 */
416 break;
417#if defined(TARGET_PPC64H) /* PowerPC 64 with hypervisor mode support */
418 case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
419 cpu_abort(env, "Hypervisor data storage exception "
420 "while in user mode. Aborting\n");
421 break;
422 case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */
423 cpu_abort(env, "Hypervisor instruction storage exception "
424 "while in user mode. Aborting\n");
425 break;
426 case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
427 cpu_abort(env, "Hypervisor data segment exception "
428 "while in user mode. Aborting\n");
429 break;
430 case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */
431 cpu_abort(env, "Hypervisor instruction segment exception "
432 "while in user mode. Aborting\n");
433 break;
434#endif /* defined(TARGET_PPC64H) */
435 case POWERPC_EXCP_VPU: /* Vector unavailable exception */
436 EXCP_DUMP(env, "No Altivec instructions allowed\n");
437 info.si_signo = SIGILL;
438 info.si_errno = 0;
439 info.si_code = ILL_COPROC;
440 info.si_addr = (void*)(env->nip - 4);
441 queue_signal(info.si_signo, &info);
442 break;
443 case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */
444 cpu_abort(env, "Programable interval timer interrupt "
445 "while in user mode. Aborting\n");
446 break;
447 case POWERPC_EXCP_IO: /* IO error exception */
448 cpu_abort(env, "IO error exception while in user mode. "
449 "Aborting\n");
450 break;
451 case POWERPC_EXCP_RUNM: /* Run mode exception */
452 cpu_abort(env, "Run mode exception while in user mode. "
453 "Aborting\n");
454 break;
455 case POWERPC_EXCP_EMUL: /* Emulation trap exception */
456 cpu_abort(env, "Emulation trap exception not handled\n");
457 break;
458 case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
459 cpu_abort(env, "Instruction fetch TLB exception "
460 "while in user-mode. Aborting");
461 break;
462 case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
463 cpu_abort(env, "Data load TLB exception while in user-mode. "
464 "Aborting");
465 break;
466 case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
467 cpu_abort(env, "Data store TLB exception while in user-mode. "
468 "Aborting");
469 break;
470 case POWERPC_EXCP_FPA: /* Floating-point assist exception */
471 cpu_abort(env, "Floating-point assist exception not handled\n");
472 break;
473 case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
474 cpu_abort(env, "Instruction address breakpoint exception "
475 "not handled\n");
476 break;
477 case POWERPC_EXCP_SMI: /* System management interrupt */
478 cpu_abort(env, "System management interrupt while in user mode. "
479 "Aborting\n");
480 break;
481 case POWERPC_EXCP_THERM: /* Thermal interrupt */
482 cpu_abort(env, "Thermal interrupt interrupt while in user mode. "
483 "Aborting\n");
484 break;
485 case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */
486 cpu_abort(env, "Performance monitor exception not handled\n");
487 break;
488 case POWERPC_EXCP_VPUA: /* Vector assist exception */
489 cpu_abort(env, "Vector assist exception not handled\n");
490 break;
491 case POWERPC_EXCP_SOFTP: /* Soft patch exception */
492 cpu_abort(env, "Soft patch exception not handled\n");
493 break;
494 case POWERPC_EXCP_MAINT: /* Maintenance exception */
495 cpu_abort(env, "Maintenance exception while in user mode. "
496 "Aborting\n");
497 break;
498 case POWERPC_EXCP_STOP: /* stop translation */
499 /* We did invalidate the instruction cache. Go on */
500 break;
501 case POWERPC_EXCP_BRANCH: /* branch instruction: */
502 /* We just stopped because of a branch. Go on */
503 break;
504 case POWERPC_EXCP_SYSCALL_USER:
505 /* system call in user-mode emulation */
506 /* system call */
507 if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0)
508 ret = do_unix_syscall(env, env->gpr[0]/*, env->gpr[3], env->gpr[4],
509 env->gpr[5], env->gpr[6], env->gpr[7],
510 env->gpr[8], env->gpr[9], env->gpr[10]*/);
511 else if(((int)env->gpr[0])<0)
512 ret = do_mach_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
513 env->gpr[5], env->gpr[6], env->gpr[7],
514 env->gpr[8], env->gpr[9], env->gpr[10]);
515 else
516 ret = do_thread_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
517 env->gpr[5], env->gpr[6], env->gpr[7],
518 env->gpr[8], env->gpr[9], env->gpr[10]);
519
520 /* Unix syscall error signaling */
521 if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0)
522 {
523 if( (int)ret < 0 )
524 env->nip += 0;
525 else
526 env->nip += 4;
831b7825 527 }
e1833e1f
JM		 528
529 /* Return value */
530 env->gpr[3] = ret;
531 break;
56ba31ff
JM		 532 case EXCP_INTERRUPT:
533 /* just indicate that signals should be handled asap */
534 break;
e1833e1f
JM		 535 default:
536 cpu_abort(env, "Unknown exception 0x%d. Aborting\n", trapnr);
537 break;
831b7825
TS		 538 }
539 process_pending_signals(env);
540 }
541}
542#endif
543
544
545#ifdef TARGET_I386
546
547/***********************************************************/
548/* CPUX86 core interface */
549
550uint64_t cpu_get_tsc(CPUX86State *env)
551{
552 return cpu_get_real_ticks();
553}
554
555void
556write_dt(void *ptr, unsigned long addr, unsigned long limit,
557 int flags)
558{
559 unsigned int e1, e2;
560 e1 = (addr << 16) | (limit & 0xffff);
561 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
562 e2 |= flags;
563 stl((uint8_t *)ptr, e1);
564 stl((uint8_t *)ptr + 4, e2);
565}
566
567static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
568 unsigned long addr, unsigned int sel)
569{
570 unsigned int e1, e2;
571 e1 = (addr & 0xffff) | (sel << 16);
572 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
573 stl((uint8_t *)ptr, e1);
574 stl((uint8_t *)ptr + 4, e2);
575}
576
577#define GDT_TABLE_SIZE 14
578#define LDT_TABLE_SIZE 15
579#define IDT_TABLE_SIZE 256
580#define TSS_SIZE 104
581uint64_t gdt_table[GDT_TABLE_SIZE];
582uint64_t ldt_table[LDT_TABLE_SIZE];
583uint64_t idt_table[IDT_TABLE_SIZE];
584uint32_t tss[TSS_SIZE];
585
586/* only dpl matters as we do only user space emulation */
587static void set_idt(int n, unsigned int dpl)
588{
589 set_gate(idt_table + n, 0, dpl, 0, 0);
590}
591
592/* ABI convention: after a syscall if there was an error the CF flag is set */
46ea3397 593static inline void set_error(CPUX86State *env, int ret)
831b7825
TS		 594{
595 if(ret<0)
596 env->eflags = env->eflags | 0x1;
597 else
598 env->eflags &= ~0x1;
599 env->regs[R_EAX] = ret;
600}
601
602void cpu_loop(CPUX86State *env)
603{
604 int trapnr;
605 int ret;
606 uint8_t *pc;
607 target_siginfo_t info;
608
609 for(;;) {
610 trapnr = cpu_x86_exec(env);
611 uint32_t *params = (uint32_t *)env->regs[R_ESP];
612 switch(trapnr) {
613 case 0x79: /* Our commpage hack back door exit is here */
614 do_commpage(env, env->eip, *(params + 1), *(params + 2),
615 *(params + 3), *(params + 4),
616 *(params + 5), *(params + 6),
617 *(params + 7), *(params + 8));
618 break;
619 case 0x81: /* mach syscall */
620 {
621 ret = do_mach_syscall(env, env->regs[R_EAX],
622 *(params + 1), *(params + 2),
623 *(params + 3), *(params + 4),
624 *(params + 5), *(params + 6),
625 *(params + 7), *(params + 8));
626 set_error(env, ret);
627 break;
628 }
629 case 0x90: /* unix backdoor */
630 {
631 /* after sysenter, stack is in R_ECX, new eip in R_EDX (sysexit will flip them back)*/
632 int saved_stack = env->regs[R_ESP];
633 env->regs[R_ESP] = env->regs[R_ECX];
634
635 ret = do_unix_syscall(env, env->regs[R_EAX]);
636
637 env->regs[R_ECX] = env->regs[R_ESP];
638 env->regs[R_ESP] = saved_stack;
639
640 set_error(env, ret);
641 break;
642 }
643 case 0x80: /* unix syscall */
644 {
645 ret = do_unix_syscall(env, env->regs[R_EAX]/*,
646 *(params + 1), *(params + 2),
647 *(params + 3), *(params + 4),
648 *(params + 5), *(params + 6),
649 *(params + 7), *(params + 8)*/);
650 set_error(env, ret);
651 break;
652 }
653 case 0x82: /* thread syscall */
654 {
655 ret = do_thread_syscall(env, env->regs[R_EAX],
656 *(params + 1), *(params + 2),
657 *(params + 3), *(params + 4),
658 *(params + 5), *(params + 6),
659 *(params + 7), *(params + 8));
660 set_error(env, ret);
661 break;
662 }
663 case EXCP0B_NOSEG:
664 case EXCP0C_STACK:
665 info.si_signo = SIGBUS;
666 info.si_errno = 0;
667 info.si_code = BUS_NOOP;
668 info.si_addr = 0;
669 gdb_handlesig (env, SIGBUS);
670 queue_signal(info.si_signo, &info);
671 break;
672 case EXCP0D_GPF:
673 info.si_signo = SIGSEGV;
674 info.si_errno = 0;
675 info.si_code = SEGV_NOOP;
676 info.si_addr = 0;
677 gdb_handlesig (env, SIGSEGV);
678 queue_signal(info.si_signo, &info);
679 break;
680 case EXCP0E_PAGE:
681 info.si_signo = SIGSEGV;
682 info.si_errno = 0;
683 if (!(env->error_code & 1))
684 info.si_code = SEGV_MAPERR;
685 else
686 info.si_code = SEGV_ACCERR;
687 info.si_addr = (void*)env->cr[2];
688 gdb_handlesig (env, SIGSEGV);
689 queue_signal(info.si_signo, &info);
690 break;
691 case EXCP00_DIVZ:
692 /* division by zero */
693 info.si_signo = SIGFPE;
694 info.si_errno = 0;
695 info.si_code = FPE_INTDIV;
696 info.si_addr = (void*)env->eip;
697 gdb_handlesig (env, SIGFPE);
698 queue_signal(info.si_signo, &info);
699 break;
700 case EXCP01_SSTP:
701 case EXCP03_INT3:
702 info.si_signo = SIGTRAP;
703 info.si_errno = 0;
704 info.si_code = TRAP_BRKPT;
705 info.si_addr = (void*)env->eip;
706 gdb_handlesig (env, SIGTRAP);
707 queue_signal(info.si_signo, &info);
708 break;
709 case EXCP04_INTO:
710 case EXCP05_BOUND:
711 info.si_signo = SIGSEGV;
712 info.si_errno = 0;
713 info.si_code = SEGV_NOOP;
714 info.si_addr = 0;
715 gdb_handlesig (env, SIGSEGV);
716 queue_signal(info.si_signo, &info);
717 break;
718 case EXCP06_ILLOP:
719 info.si_signo = SIGILL;
720 info.si_errno = 0;
721 info.si_code = ILL_ILLOPN;
722 info.si_addr = (void*)env->eip;
723 gdb_handlesig (env, SIGILL);
724 queue_signal(info.si_signo, &info);
725 break;
726 case EXCP_INTERRUPT:
727 /* just indicate that signals should be handled asap */
728 break;
729 case EXCP_DEBUG:
730 {
731 int sig;
732
733 sig = gdb_handlesig (env, SIGTRAP);
734 if (sig)
735 {
736 info.si_signo = sig;
737 info.si_errno = 0;
738 info.si_code = TRAP_BRKPT;
739 queue_signal(info.si_signo, &info);
740 }
741 }
742 break;
743 default:
744 pc = (void*)(env->segs[R_CS].base + env->eip);
745 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
746 (long)pc, trapnr);
747 abort();
748 }
749 process_pending_signals(env);
750 }
751}
752#endif
753
754void usage(void)
755{
756 printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n"
757 "usage: qemu-" TARGET_ARCH " [-h] [-d opts] [-L path] [-s size] program [arguments...]\n"
758 "Darwin CPU emulator (compiled for %s emulation)\n"
759 "\n"
760 "-h print this help\n"
1e2bed4f 761 "-L path set the %s library path (default='%s')\n"
831b7825
TS		 762 "-s size set the stack size in bytes (default=%ld)\n"
763 "\n"
764 "debug options:\n"
765#ifdef USE_CODE_COPY
766 "-no-code-copy disable code copy acceleration\n"
767#endif
1e2bed4f 768 "-d options activate log (logfile='%s')\n"
831b7825
TS		 769 "-g wait for gdb on port 1234\n"
770 "-p pagesize set the host page size to 'pagesize'\n",
771 TARGET_ARCH,
1e2bed4f 772 TARGET_ARCH,
831b7825
TS		 773 interp_prefix,
774 stack_size,
775 DEBUG_LOGFILE);
776 _exit(1);
777}
778
779/* XXX: currently only used for async signals (see signal.c) */
780CPUState *global_env;
781/* used only if single thread */
782CPUState *cpu_single_env = NULL;
783
784/* used to free thread contexts */
785TaskState *first_task_state;
786
787int main(int argc, char **argv)
788{
789 const char *filename;
790 struct target_pt_regs regs1, *regs = &regs1;
791 TaskState ts1, *ts = &ts1;
792 CPUState *env;
793 int optind;
794 short use_gdbstub = 0;
795 const char *r;
796
797 if (argc <= 1)
798 usage();
799
800 /* init debug */
801 cpu_set_log_filename(DEBUG_LOGFILE);
802
803 optind = 1;
804 for(;;) {
805 if (optind >= argc)
806 break;
807 r = argv[optind];
808 if (r[0] != '-')
809 break;
810 optind++;
811 r++;
812 if (!strcmp(r, "-")) {
813 break;
814 } else if (!strcmp(r, "d")) {
815 int mask;
816 CPULogItem *item;
817
818 if (optind >= argc)
819 break;
820
821 r = argv[optind++];
822 mask = cpu_str_to_log_mask(r);
823 if (!mask) {
824 printf("Log items (comma separated):\n");
825 for(item = cpu_log_items; item->mask != 0; item++) {
826 printf("%-10s %s\n", item->name, item->help);
827 }
828 exit(1);
829 }
830 cpu_set_log(mask);
831 } else if (!strcmp(r, "s")) {
832 r = argv[optind++];
833 stack_size = strtol(r, (char **)&r, 0);
834 if (stack_size <= 0)
835 usage();
836 if (*r == 'M')
837 stack_size *= 1024 * 1024;
838 else if (*r == 'k' || *r == 'K')
839 stack_size *= 1024;
840 } else if (!strcmp(r, "L")) {
841 interp_prefix = argv[optind++];
842 } else if (!strcmp(r, "p")) {
843 qemu_host_page_size = atoi(argv[optind++]);
844 if (qemu_host_page_size == 0 ||
845 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
846 fprintf(stderr, "page size must be a power of two\n");
847 exit(1);
848 }
849 } else
850 if (!strcmp(r, "g")) {
851 use_gdbstub = 1;
852 } else
853#ifdef USE_CODE_COPY
854 if (!strcmp(r, "no-code-copy")) {
855 code_copy_enabled = 0;
856 } else
857#endif
858 {
859 usage();
860 }
861 }
862 if (optind >= argc)
863 usage();
864 filename = argv[optind];
865
866 /* Zero out regs */
867 memset(regs, 0, sizeof(struct target_pt_regs));
868
831b7825
TS		 869 /* NOTE: we need to init the CPU at this stage to get
870 qemu_host_page_size */
871 env = cpu_init();
872
873 printf("Starting %s with qemu\n----------------\n", filename);
874
875 commpage_init();
876
877 if (mach_exec(filename, argv+optind, environ, regs) != 0) {
878 printf("Error loading %s\n", filename);
879 _exit(1);
880 }
881
882 syscall_init();
883 signal_init();
884 global_env = env;
885
886 /* build Task State */
887 memset(ts, 0, sizeof(TaskState));
888 env->opaque = ts;
889 ts->used = 1;
890 env->user_mode_only = 1;
891
892#if defined(TARGET_I386)
893 cpu_x86_set_cpl(env, 3);
894
895 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
896 env->hflags |= HF_PE_MASK;
897
898 if (env->cpuid_features & CPUID_SSE) {
899 env->cr[4] |= CR4_OSFXSR_MASK;
900 env->hflags |= HF_OSFXSR_MASK;
901 }
902
903 /* flags setup : we activate the IRQs by default as in user mode */
904 env->eflags |= IF_MASK;
905
906 /* darwin register setup */
907 env->regs[R_EAX] = regs->eax;
908 env->regs[R_EBX] = regs->ebx;
909 env->regs[R_ECX] = regs->ecx;
910 env->regs[R_EDX] = regs->edx;
911 env->regs[R_ESI] = regs->esi;
912 env->regs[R_EDI] = regs->edi;
913 env->regs[R_EBP] = regs->ebp;
914 env->regs[R_ESP] = regs->esp;
915 env->eip = regs->eip;
916
917 /* Darwin LDT setup */
918 /* 2 - User code segment
919 3 - User data segment
920 4 - User cthread */
921 bzero(ldt_table, LDT_TABLE_SIZE * sizeof(ldt_table[0]));
922 env->ldt.base = (uint32_t) ldt_table;
923 env->ldt.limit = sizeof(ldt_table) - 1;
924
925 write_dt(ldt_table + 2, 0, 0xfffff,
926 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
927 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
928 write_dt(ldt_table + 3, 0, 0xfffff,
929 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
930 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
931 write_dt(ldt_table + 4, 0, 0xfffff,
932 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
933 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
934
935 /* Darwin GDT setup.
936 * has changed a lot between old Darwin/x86 (pre-Mac Intel) and Mac OS X/x86,
937 now everything is done via int 0x81(mach) int 0x82 (thread) and sysenter/sysexit(unix) */
938 bzero(gdt_table, sizeof(gdt_table));
939 env->gdt.base = (uint32_t)gdt_table;
940 env->gdt.limit = sizeof(gdt_table) - 1;
941
942 /* Set up a back door to handle sysenter syscalls (unix) */
943 char * syscallbackdoor = malloc(64);
944 page_set_flags((int)syscallbackdoor, (int)syscallbackdoor + 64, PROT_EXEC | PROT_READ | PAGE_VALID);
945
946 int i = 0;
947 syscallbackdoor[i++] = 0xcd;
948 syscallbackdoor[i++] = 0x90; /* int 0x90 */
949 syscallbackdoor[i++] = 0x0F;
950 syscallbackdoor[i++] = 0x35; /* sysexit */
951
952 /* Darwin sysenter/sysexit setup */
953 env->sysenter_cs = 0x1; //XXX
954 env->sysenter_eip = (int)syscallbackdoor;
955 env->sysenter_esp = (int)malloc(64);
956
957 /* Darwin TSS setup
958 This must match up with GDT[4] */
959 env->tr.base = (uint32_t) tss;
960 env->tr.limit = sizeof(tss) - 1;
961 env->tr.flags = DESC_P_MASK | (0x9 << DESC_TYPE_SHIFT);
962 stw(tss + 2, 0x10); // ss0 = 0x10 = GDT[2] = Kernel Data Segment
963
964 /* Darwin interrupt setup */
965 bzero(idt_table, sizeof(idt_table));
966 env->idt.base = (uint32_t) idt_table;
967 env->idt.limit = sizeof(idt_table) - 1;
968 set_idt(0, 0);
969 set_idt(1, 0);
970 set_idt(2, 0);
971 set_idt(3, 3);
972 set_idt(4, 3);
973 set_idt(5, 3);
974 set_idt(6, 0);
975 set_idt(7, 0);
976 set_idt(8, 0);
977 set_idt(9, 0);
978 set_idt(10, 0);
979 set_idt(11, 0);
980 set_idt(12, 0);
981 set_idt(13, 0);
982 set_idt(14, 0);
983 set_idt(15, 0);
984 set_idt(16, 0);
985 set_idt(17, 0);
986 set_idt(18, 0);
987 set_idt(19, 0);
988 /* Syscalls are done via
989 int 0x80 (unix) (rarely used)
990 int 0x81 (mach)
991 int 0x82 (thread)
992 int 0x83 (diag) (not handled here)
993 sysenter/sysexit (unix) -> we redirect that to int 0x90 */
994 set_idt(0x79, 3); /* Commpage hack, here is our backdoor interrupt */
995 set_idt(0x80, 3); /* Unix Syscall */
996 set_idt(0x81, 3); /* Mach Syscalls */
997 set_idt(0x82, 3); /* thread Syscalls */
998
1e2bed4f 999 set_idt(0x90, 3); /* qemu-darwin-user's Unix syscalls backdoor */
831b7825
TS		 1000
1001
1002 cpu_x86_load_seg(env, R_CS, __USER_CS);
1003 cpu_x86_load_seg(env, R_DS, __USER_DS);
1004 cpu_x86_load_seg(env, R_ES, __USER_DS);
1005 cpu_x86_load_seg(env, R_SS, __USER_DS);
1006 cpu_x86_load_seg(env, R_FS, __USER_DS);
1007 cpu_x86_load_seg(env, R_GS, __USER_DS);
1008
1009#elif defined(TARGET_PPC)
1010 {
1011 int i;
1012 env->nip = regs->nip;
1013 for(i = 0; i < 32; i++) {
1014 env->gpr[i] = regs->gpr[i];
1015 }
1016 }
1017#else
1018#error unsupported target CPU
1019#endif
1020
1021 if (use_gdbstub) {
1022 printf("Waiting for gdb Connection on port 1234...\n");
1023 gdbserver_start (1234);
1024 gdb_handlesig(env, 0);
1025 }
1026
1027 cpu_loop(env);
1028 /* never exits */
1029 return 0;
1030}
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