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Allow use of SPE extension by all PowerPC targets,
[qemu.git] / darwin-user / main.c
CommitLineData
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 */
e1833e1f
JM		 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;
7c58044c 246 case POWERPC_EXCP_FP_VXSNAN:
e1833e1f
JM		 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;
831b7825 254 break;
831b7825 255 default:
e1833e1f
JM		 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;
831b7825
TS		 313 }
314 info.si_addr = (void*)(env->nip - 4);
315 queue_signal(info.si_signo, &info);
316 break;
e1833e1f
JM		 317 case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
318 EXCP_DUMP(env, "No floating point allowed\n");
319 info.si_signo = SIGILL;
831b7825
TS		 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;
e1833e1f
JM		 325 case POWERPC_EXCP_SYSCALL: /* System call exception */
326 cpu_abort(env, "Syscall exception while in user mode. "
327 "Aborting\n");
831b7825 328 break;
e1833e1f
JM		 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");
831b7825 348 break;
e1833e1f
JM		 349 case POWERPC_EXCP_DTLB: /* Data TLB error */
350 cpu_abort(env, "Data TLB exception while in user mode. "
351 "Aborting\n");
831b7825 352 break;
e1833e1f
JM		 353 case POWERPC_EXCP_ITLB: /* Instruction TLB error */
354 cpu_abort(env, "Instruction TLB exception while in user mode. "
355 "Aborting\n");
831b7825 356 break;
e1833e1f 357 case POWERPC_EXCP_DEBUG: /* Debug interrupt */
831b7825
TS		 358 gdb_handlesig (env, SIGTRAP);
359 break;
e1833e1f
JM		 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;
e1833e1f
JM		 385 case POWERPC_EXCP_RESET: /* System reset exception */
386 cpu_abort(env, "Reset interrupt while in user mode. "
387 "Aborting\n");
388 break;
389#if defined(TARGET_PPC64) /* PowerPC 64 */
390 case POWERPC_EXCP_DSEG: /* Data segment exception */
391 cpu_abort(env, "Data segment exception while in user mode. "
392 "Aborting\n");
393 break;
394 case POWERPC_EXCP_ISEG: /* Instruction segment exception */
395 cpu_abort(env, "Instruction segment exception "
396 "while in user mode. Aborting\n");
397 break;
398#endif /* defined(TARGET_PPC64) */
399#if defined(TARGET_PPC64H) /* PowerPC 64 with hypervisor mode support */
400 case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */
401 cpu_abort(env, "Hypervisor decrementer interrupt "
402 "while in user mode. Aborting\n");
403 break;
404#endif /* defined(TARGET_PPC64H) */
405 case POWERPC_EXCP_TRACE: /* Trace exception */
406 /* Nothing to do:
407 * we use this exception to emulate step-by-step execution mode.
408 */
409 break;
410#if defined(TARGET_PPC64H) /* PowerPC 64 with hypervisor mode support */
411 case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */
412 cpu_abort(env, "Hypervisor data storage exception "
413 "while in user mode. Aborting\n");
414 break;
415 case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */
416 cpu_abort(env, "Hypervisor instruction storage exception "
417 "while in user mode. Aborting\n");
418 break;
419 case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */
420 cpu_abort(env, "Hypervisor data segment exception "
421 "while in user mode. Aborting\n");
422 break;
423 case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */
424 cpu_abort(env, "Hypervisor instruction segment exception "
425 "while in user mode. Aborting\n");
426 break;
427#endif /* defined(TARGET_PPC64H) */
428 case POWERPC_EXCP_VPU: /* Vector unavailable exception */
429 EXCP_DUMP(env, "No Altivec instructions allowed\n");
430 info.si_signo = SIGILL;
431 info.si_errno = 0;
432 info.si_code = ILL_COPROC;
433 info.si_addr = (void*)(env->nip - 4);
434 queue_signal(info.si_signo, &info);
435 break;
436 case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */
437 cpu_abort(env, "Programable interval timer interrupt "
438 "while in user mode. Aborting\n");
439 break;
440 case POWERPC_EXCP_IO: /* IO error exception */
441 cpu_abort(env, "IO error exception while in user mode. "
442 "Aborting\n");
443 break;
444 case POWERPC_EXCP_RUNM: /* Run mode exception */
445 cpu_abort(env, "Run mode exception while in user mode. "
446 "Aborting\n");
447 break;
448 case POWERPC_EXCP_EMUL: /* Emulation trap exception */
449 cpu_abort(env, "Emulation trap exception not handled\n");
450 break;
451 case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */
452 cpu_abort(env, "Instruction fetch TLB exception "
453 "while in user-mode. Aborting");
454 break;
455 case POWERPC_EXCP_DLTLB: /* Data load TLB miss */
456 cpu_abort(env, "Data load TLB exception while in user-mode. "
457 "Aborting");
458 break;
459 case POWERPC_EXCP_DSTLB: /* Data store TLB miss */
460 cpu_abort(env, "Data store TLB exception while in user-mode. "
461 "Aborting");
462 break;
463 case POWERPC_EXCP_FPA: /* Floating-point assist exception */
464 cpu_abort(env, "Floating-point assist exception not handled\n");
465 break;
466 case POWERPC_EXCP_IABR: /* Instruction address breakpoint */
467 cpu_abort(env, "Instruction address breakpoint exception "
468 "not handled\n");
469 break;
470 case POWERPC_EXCP_SMI: /* System management interrupt */
471 cpu_abort(env, "System management interrupt while in user mode. "
472 "Aborting\n");
473 break;
474 case POWERPC_EXCP_THERM: /* Thermal interrupt */
475 cpu_abort(env, "Thermal interrupt interrupt while in user mode. "
476 "Aborting\n");
477 break;
478 case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */
479 cpu_abort(env, "Performance monitor exception not handled\n");
480 break;
481 case POWERPC_EXCP_VPUA: /* Vector assist exception */
482 cpu_abort(env, "Vector assist exception not handled\n");
483 break;
484 case POWERPC_EXCP_SOFTP: /* Soft patch exception */
485 cpu_abort(env, "Soft patch exception not handled\n");
486 break;
487 case POWERPC_EXCP_MAINT: /* Maintenance exception */
488 cpu_abort(env, "Maintenance exception while in user mode. "
489 "Aborting\n");
490 break;
491 case POWERPC_EXCP_STOP: /* stop translation */
492 /* We did invalidate the instruction cache. Go on */
493 break;
494 case POWERPC_EXCP_BRANCH: /* branch instruction: */
495 /* We just stopped because of a branch. Go on */
496 break;
497 case POWERPC_EXCP_SYSCALL_USER:
498 /* system call in user-mode emulation */
499 /* system call */
500 if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0)
501 ret = do_unix_syscall(env, env->gpr[0]/*, env->gpr[3], env->gpr[4],
502 env->gpr[5], env->gpr[6], env->gpr[7],
503 env->gpr[8], env->gpr[9], env->gpr[10]*/);
504 else if(((int)env->gpr[0])<0)
505 ret = do_mach_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
506 env->gpr[5], env->gpr[6], env->gpr[7],
507 env->gpr[8], env->gpr[9], env->gpr[10]);
508 else
509 ret = do_thread_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4],
510 env->gpr[5], env->gpr[6], env->gpr[7],
511 env->gpr[8], env->gpr[9], env->gpr[10]);
512
513 /* Unix syscall error signaling */
514 if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0)
515 {
516 if( (int)ret < 0 )
517 env->nip += 0;
518 else
519 env->nip += 4;
831b7825 520 }
e1833e1f
JM		 521
522 /* Return value */
523 env->gpr[3] = ret;
524 break;
56ba31ff
JM		 525 case EXCP_INTERRUPT:
526 /* just indicate that signals should be handled asap */
527 break;
e1833e1f
JM		 528 default:
529 cpu_abort(env, "Unknown exception 0x%d. Aborting\n", trapnr);
530 break;
831b7825
TS		 531 }
532 process_pending_signals(env);
533 }
534}
535#endif
536
537
538#ifdef TARGET_I386
539
540/***********************************************************/
541/* CPUX86 core interface */
542
543uint64_t cpu_get_tsc(CPUX86State *env)
544{
545 return cpu_get_real_ticks();
546}
547
548void
549write_dt(void *ptr, unsigned long addr, unsigned long limit,
550 int flags)
551{
552 unsigned int e1, e2;
553 e1 = (addr << 16) | (limit & 0xffff);
554 e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000);
555 e2 |= flags;
556 stl((uint8_t *)ptr, e1);
557 stl((uint8_t *)ptr + 4, e2);
558}
559
560static void set_gate(void *ptr, unsigned int type, unsigned int dpl,
561 unsigned long addr, unsigned int sel)
562{
563 unsigned int e1, e2;
564 e1 = (addr & 0xffff) | (sel << 16);
565 e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8);
566 stl((uint8_t *)ptr, e1);
567 stl((uint8_t *)ptr + 4, e2);
568}
569
570#define GDT_TABLE_SIZE 14
571#define LDT_TABLE_SIZE 15
572#define IDT_TABLE_SIZE 256
573#define TSS_SIZE 104
574uint64_t gdt_table[GDT_TABLE_SIZE];
575uint64_t ldt_table[LDT_TABLE_SIZE];
576uint64_t idt_table[IDT_TABLE_SIZE];
577uint32_t tss[TSS_SIZE];
578
579/* only dpl matters as we do only user space emulation */
580static void set_idt(int n, unsigned int dpl)
581{
582 set_gate(idt_table + n, 0, dpl, 0, 0);
583}
584
585/* ABI convention: after a syscall if there was an error the CF flag is set */
46ea3397 586static inline void set_error(CPUX86State *env, int ret)
831b7825
TS		 587{
588 if(ret<0)
589 env->eflags = env->eflags | 0x1;
590 else
591 env->eflags &= ~0x1;
592 env->regs[R_EAX] = ret;
593}
594
595void cpu_loop(CPUX86State *env)
596{
597 int trapnr;
598 int ret;
599 uint8_t *pc;
600 target_siginfo_t info;
601
602 for(;;) {
603 trapnr = cpu_x86_exec(env);
604 uint32_t *params = (uint32_t *)env->regs[R_ESP];
605 switch(trapnr) {
606 case 0x79: /* Our commpage hack back door exit is here */
607 do_commpage(env, env->eip, *(params + 1), *(params + 2),
608 *(params + 3), *(params + 4),
609 *(params + 5), *(params + 6),
610 *(params + 7), *(params + 8));
611 break;
612 case 0x81: /* mach syscall */
613 {
614 ret = do_mach_syscall(env, env->regs[R_EAX],
615 *(params + 1), *(params + 2),
616 *(params + 3), *(params + 4),
617 *(params + 5), *(params + 6),
618 *(params + 7), *(params + 8));
619 set_error(env, ret);
620 break;
621 }
622 case 0x90: /* unix backdoor */
623 {
624 /* after sysenter, stack is in R_ECX, new eip in R_EDX (sysexit will flip them back)*/
625 int saved_stack = env->regs[R_ESP];
626 env->regs[R_ESP] = env->regs[R_ECX];
627
628 ret = do_unix_syscall(env, env->regs[R_EAX]);
629
630 env->regs[R_ECX] = env->regs[R_ESP];
631 env->regs[R_ESP] = saved_stack;
632
633 set_error(env, ret);
634 break;
635 }
636 case 0x80: /* unix syscall */
637 {
638 ret = do_unix_syscall(env, env->regs[R_EAX]/*,
639 *(params + 1), *(params + 2),
640 *(params + 3), *(params + 4),
641 *(params + 5), *(params + 6),
642 *(params + 7), *(params + 8)*/);
643 set_error(env, ret);
644 break;
645 }
646 case 0x82: /* thread syscall */
647 {
648 ret = do_thread_syscall(env, env->regs[R_EAX],
649 *(params + 1), *(params + 2),
650 *(params + 3), *(params + 4),
651 *(params + 5), *(params + 6),
652 *(params + 7), *(params + 8));
653 set_error(env, ret);
654 break;
655 }
656 case EXCP0B_NOSEG:
657 case EXCP0C_STACK:
658 info.si_signo = SIGBUS;
659 info.si_errno = 0;
660 info.si_code = BUS_NOOP;
661 info.si_addr = 0;
662 gdb_handlesig (env, SIGBUS);
663 queue_signal(info.si_signo, &info);
664 break;
665 case EXCP0D_GPF:
666 info.si_signo = SIGSEGV;
667 info.si_errno = 0;
668 info.si_code = SEGV_NOOP;
669 info.si_addr = 0;
670 gdb_handlesig (env, SIGSEGV);
671 queue_signal(info.si_signo, &info);
672 break;
673 case EXCP0E_PAGE:
674 info.si_signo = SIGSEGV;
675 info.si_errno = 0;
676 if (!(env->error_code & 1))
677 info.si_code = SEGV_MAPERR;
678 else
679 info.si_code = SEGV_ACCERR;
680 info.si_addr = (void*)env->cr[2];
681 gdb_handlesig (env, SIGSEGV);
682 queue_signal(info.si_signo, &info);
683 break;
684 case EXCP00_DIVZ:
685 /* division by zero */
686 info.si_signo = SIGFPE;
687 info.si_errno = 0;
688 info.si_code = FPE_INTDIV;
689 info.si_addr = (void*)env->eip;
690 gdb_handlesig (env, SIGFPE);
691 queue_signal(info.si_signo, &info);
692 break;
693 case EXCP01_SSTP:
694 case EXCP03_INT3:
695 info.si_signo = SIGTRAP;
696 info.si_errno = 0;
697 info.si_code = TRAP_BRKPT;
698 info.si_addr = (void*)env->eip;
699 gdb_handlesig (env, SIGTRAP);
700 queue_signal(info.si_signo, &info);
701 break;
702 case EXCP04_INTO:
703 case EXCP05_BOUND:
704 info.si_signo = SIGSEGV;
705 info.si_errno = 0;
706 info.si_code = SEGV_NOOP;
707 info.si_addr = 0;
708 gdb_handlesig (env, SIGSEGV);
709 queue_signal(info.si_signo, &info);
710 break;
711 case EXCP06_ILLOP:
712 info.si_signo = SIGILL;
713 info.si_errno = 0;
714 info.si_code = ILL_ILLOPN;
715 info.si_addr = (void*)env->eip;
716 gdb_handlesig (env, SIGILL);
717 queue_signal(info.si_signo, &info);
718 break;
719 case EXCP_INTERRUPT:
720 /* just indicate that signals should be handled asap */
721 break;
722 case EXCP_DEBUG:
723 {
724 int sig;
725
726 sig = gdb_handlesig (env, SIGTRAP);
727 if (sig)
728 {
729 info.si_signo = sig;
730 info.si_errno = 0;
731 info.si_code = TRAP_BRKPT;
732 queue_signal(info.si_signo, &info);
733 }
734 }
735 break;
736 default:
737 pc = (void*)(env->segs[R_CS].base + env->eip);
738 fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
739 (long)pc, trapnr);
740 abort();
741 }
742 process_pending_signals(env);
743 }
744}
745#endif
746
747void usage(void)
748{
749 printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n"
750 "usage: qemu-" TARGET_ARCH " [-h] [-d opts] [-L path] [-s size] program [arguments...]\n"
751 "Darwin CPU emulator (compiled for %s emulation)\n"
752 "\n"
753 "-h print this help\n"
1e2bed4f 754 "-L path set the %s library path (default='%s')\n"
831b7825
TS		 755 "-s size set the stack size in bytes (default=%ld)\n"
756 "\n"
757 "debug options:\n"
1e2bed4f 758 "-d options activate log (logfile='%s')\n"
831b7825
TS		 759 "-g wait for gdb on port 1234\n"
760 "-p pagesize set the host page size to 'pagesize'\n",
761 TARGET_ARCH,
1e2bed4f 762 TARGET_ARCH,
831b7825
TS		 763 interp_prefix,
764 stack_size,
765 DEBUG_LOGFILE);
766 _exit(1);
767}
768
769/* XXX: currently only used for async signals (see signal.c) */
770CPUState *global_env;
771/* used only if single thread */
772CPUState *cpu_single_env = NULL;
773
774/* used to free thread contexts */
775TaskState *first_task_state;
776
777int main(int argc, char **argv)
778{
779 const char *filename;
780 struct target_pt_regs regs1, *regs = &regs1;
781 TaskState ts1, *ts = &ts1;
782 CPUState *env;
783 int optind;
784 short use_gdbstub = 0;
785 const char *r;
aaed909a 786 const char *cpu_model;
831b7825
TS		 787
788 if (argc <= 1)
789 usage();
790
791 /* init debug */
792 cpu_set_log_filename(DEBUG_LOGFILE);
793
794 optind = 1;
795 for(;;) {
796 if (optind >= argc)
797 break;
798 r = argv[optind];
799 if (r[0] != '-')
800 break;
801 optind++;
802 r++;
803 if (!strcmp(r, "-")) {
804 break;
805 } else if (!strcmp(r, "d")) {
806 int mask;
807 CPULogItem *item;
808
809 if (optind >= argc)
810 break;
811
812 r = argv[optind++];
813 mask = cpu_str_to_log_mask(r);
814 if (!mask) {
815 printf("Log items (comma separated):\n");
816 for(item = cpu_log_items; item->mask != 0; item++) {
817 printf("%-10s %s\n", item->name, item->help);
818 }
819 exit(1);
820 }
821 cpu_set_log(mask);
822 } else if (!strcmp(r, "s")) {
823 r = argv[optind++];
824 stack_size = strtol(r, (char **)&r, 0);
825 if (stack_size <= 0)
826 usage();
827 if (*r == 'M')
828 stack_size *= 1024 * 1024;
829 else if (*r == 'k' || *r == 'K')
830 stack_size *= 1024;
831 } else if (!strcmp(r, "L")) {
832 interp_prefix = argv[optind++];
833 } else if (!strcmp(r, "p")) {
834 qemu_host_page_size = atoi(argv[optind++]);
835 if (qemu_host_page_size == 0 ||
836 (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) {
837 fprintf(stderr, "page size must be a power of two\n");
838 exit(1);
839 }
840 } else
841 if (!strcmp(r, "g")) {
842 use_gdbstub = 1;
843 } else
831b7825
TS		 844 {
845 usage();
846 }
847 }
848 if (optind >= argc)
849 usage();
850 filename = argv[optind];
851
852 /* Zero out regs */
853 memset(regs, 0, sizeof(struct target_pt_regs));
854
831b7825
TS		 855 /* NOTE: we need to init the CPU at this stage to get
856 qemu_host_page_size */
aaed909a
FB		 857#if defined(TARGET_I386)
858 cpu_model = "qemu32";
859#elif defined(TARGET_PPC)
860 cpu_model = "750";
861#else
862#error unsupported CPU
863#endif
864
865 env = cpu_init(cpu_model);
831b7825
TS		 866
867 printf("Starting %s with qemu\n----------------\n", filename);
868
869 commpage_init();
870
871 if (mach_exec(filename, argv+optind, environ, regs) != 0) {
872 printf("Error loading %s\n", filename);
873 _exit(1);
874 }
875
876 syscall_init();
877 signal_init();
878 global_env = env;
879
880 /* build Task State */
881 memset(ts, 0, sizeof(TaskState));
882 env->opaque = ts;
883 ts->used = 1;
884 env->user_mode_only = 1;
885
886#if defined(TARGET_I386)
887 cpu_x86_set_cpl(env, 3);
888
889 env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
890 env->hflags |= HF_PE_MASK;
891
892 if (env->cpuid_features & CPUID_SSE) {
893 env->cr[4] |= CR4_OSFXSR_MASK;
894 env->hflags |= HF_OSFXSR_MASK;
895 }
896
897 /* flags setup : we activate the IRQs by default as in user mode */
898 env->eflags |= IF_MASK;
899
900 /* darwin register setup */
901 env->regs[R_EAX] = regs->eax;
902 env->regs[R_EBX] = regs->ebx;
903 env->regs[R_ECX] = regs->ecx;
904 env->regs[R_EDX] = regs->edx;
905 env->regs[R_ESI] = regs->esi;
906 env->regs[R_EDI] = regs->edi;
907 env->regs[R_EBP] = regs->ebp;
908 env->regs[R_ESP] = regs->esp;
909 env->eip = regs->eip;
910
911 /* Darwin LDT setup */
912 /* 2 - User code segment
913 3 - User data segment
914 4 - User cthread */
915 bzero(ldt_table, LDT_TABLE_SIZE * sizeof(ldt_table[0]));
916 env->ldt.base = (uint32_t) ldt_table;
917 env->ldt.limit = sizeof(ldt_table) - 1;
918
919 write_dt(ldt_table + 2, 0, 0xfffff,
920 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
921 (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT));
922 write_dt(ldt_table + 3, 0, 0xfffff,
923 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
924 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
925 write_dt(ldt_table + 4, 0, 0xfffff,
926 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK |
927 (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT));
928
929 /* Darwin GDT setup.
930 * has changed a lot between old Darwin/x86 (pre-Mac Intel) and Mac OS X/x86,
931 now everything is done via int 0x81(mach) int 0x82 (thread) and sysenter/sysexit(unix) */
932 bzero(gdt_table, sizeof(gdt_table));
933 env->gdt.base = (uint32_t)gdt_table;
934 env->gdt.limit = sizeof(gdt_table) - 1;
935
936 /* Set up a back door to handle sysenter syscalls (unix) */
937 char * syscallbackdoor = malloc(64);
938 page_set_flags((int)syscallbackdoor, (int)syscallbackdoor + 64, PROT_EXEC | PROT_READ | PAGE_VALID);
939
940 int i = 0;
941 syscallbackdoor[i++] = 0xcd;
942 syscallbackdoor[i++] = 0x90; /* int 0x90 */
943 syscallbackdoor[i++] = 0x0F;
944 syscallbackdoor[i++] = 0x35; /* sysexit */
945
946 /* Darwin sysenter/sysexit setup */
947 env->sysenter_cs = 0x1; //XXX
948 env->sysenter_eip = (int)syscallbackdoor;
949 env->sysenter_esp = (int)malloc(64);
950
951 /* Darwin TSS setup
952 This must match up with GDT[4] */
953 env->tr.base = (uint32_t) tss;
954 env->tr.limit = sizeof(tss) - 1;
955 env->tr.flags = DESC_P_MASK | (0x9 << DESC_TYPE_SHIFT);
956 stw(tss + 2, 0x10); // ss0 = 0x10 = GDT[2] = Kernel Data Segment
957
958 /* Darwin interrupt setup */
959 bzero(idt_table, sizeof(idt_table));
960 env->idt.base = (uint32_t) idt_table;
961 env->idt.limit = sizeof(idt_table) - 1;
962 set_idt(0, 0);
963 set_idt(1, 0);
964 set_idt(2, 0);
965 set_idt(3, 3);
966 set_idt(4, 3);
967 set_idt(5, 3);
968 set_idt(6, 0);
969 set_idt(7, 0);
970 set_idt(8, 0);
971 set_idt(9, 0);
972 set_idt(10, 0);
973 set_idt(11, 0);
974 set_idt(12, 0);
975 set_idt(13, 0);
976 set_idt(14, 0);
977 set_idt(15, 0);
978 set_idt(16, 0);
979 set_idt(17, 0);
980 set_idt(18, 0);
981 set_idt(19, 0);
982 /* Syscalls are done via
983 int 0x80 (unix) (rarely used)
984 int 0x81 (mach)
985 int 0x82 (thread)
986 int 0x83 (diag) (not handled here)
987 sysenter/sysexit (unix) -> we redirect that to int 0x90 */
988 set_idt(0x79, 3); /* Commpage hack, here is our backdoor interrupt */
989 set_idt(0x80, 3); /* Unix Syscall */
990 set_idt(0x81, 3); /* Mach Syscalls */
991 set_idt(0x82, 3); /* thread Syscalls */
992
1e2bed4f 993 set_idt(0x90, 3); /* qemu-darwin-user's Unix syscalls backdoor */
831b7825
TS		 994
995
996 cpu_x86_load_seg(env, R_CS, __USER_CS);
997 cpu_x86_load_seg(env, R_DS, __USER_DS);
998 cpu_x86_load_seg(env, R_ES, __USER_DS);
999 cpu_x86_load_seg(env, R_SS, __USER_DS);
1000 cpu_x86_load_seg(env, R_FS, __USER_DS);
1001 cpu_x86_load_seg(env, R_GS, __USER_DS);
1002
1003#elif defined(TARGET_PPC)
1004 {
1005 int i;
1006 env->nip = regs->nip;
1007 for(i = 0; i < 32; i++) {
1008 env->gpr[i] = regs->gpr[i];
1009 }
1010 }
1011#else
1012#error unsupported target CPU
1013#endif
1014
1015 if (use_gdbstub) {
1016 printf("Waiting for gdb Connection on port 1234...\n");
1017 gdbserver_start (1234);
1018 gdb_handlesig(env, 0);
1019 }
1020
1021 cpu_loop(env);
1022 /* never exits */
1023 return 0;
1024}
Qemu copy for testing