root / darwin-user / main.c @ 7c58044c
History | View | Annotate | Download (35.4 kB)
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 |
#if defined(TARGET_PPCEMB)
|
361 |
case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */ |
362 |
EXCP_DUMP(env, "No SPE/floating-point instruction allowed\n");
|
363 |
info.si_signo = SIGILL; |
364 |
info.si_errno = 0;
|
365 |
info.si_code = ILL_COPROC; |
366 |
info.si_addr = (void*)(env->nip - 4); |
367 |
queue_signal(info.si_signo, &info); |
368 |
break;
|
369 |
case POWERPC_EXCP_EFPDI: /* Embedded floating-point data IRQ */ |
370 |
cpu_abort(env, "Embedded floating-point data IRQ not handled\n");
|
371 |
break;
|
372 |
case POWERPC_EXCP_EFPRI: /* Embedded floating-point round IRQ */ |
373 |
cpu_abort(env, "Embedded floating-point round IRQ not handled\n");
|
374 |
break;
|
375 |
case POWERPC_EXCP_EPERFM: /* Embedded performance monitor IRQ */ |
376 |
cpu_abort(env, "Performance monitor exception not handled\n");
|
377 |
break;
|
378 |
case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */ |
379 |
cpu_abort(env, "Doorbell interrupt while in user mode. "
|
380 |
"Aborting\n");
|
381 |
break;
|
382 |
case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */ |
383 |
cpu_abort(env, "Doorbell critical interrupt while in user mode. "
|
384 |
"Aborting\n");
|
385 |
break;
|
386 |
#endif /* defined(TARGET_PPCEMB) */ |
387 |
case POWERPC_EXCP_RESET: /* System reset exception */ |
388 |
cpu_abort(env, "Reset interrupt while in user mode. "
|
389 |
"Aborting\n");
|
390 |
break;
|
391 |
#if defined(TARGET_PPC64) /* PowerPC 64 */ |
392 |
case POWERPC_EXCP_DSEG: /* Data segment exception */ |
393 |
cpu_abort(env, "Data segment exception while in user mode. "
|
394 |
"Aborting\n");
|
395 |
break;
|
396 |
case POWERPC_EXCP_ISEG: /* Instruction segment exception */ |
397 |
cpu_abort(env, "Instruction segment exception "
|
398 |
"while in user mode. Aborting\n");
|
399 |
break;
|
400 |
#endif /* defined(TARGET_PPC64) */ |
401 |
#if defined(TARGET_PPC64H) /* PowerPC 64 with hypervisor mode support */ |
402 |
case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */ |
403 |
cpu_abort(env, "Hypervisor decrementer interrupt "
|
404 |
"while in user mode. Aborting\n");
|
405 |
break;
|
406 |
#endif /* defined(TARGET_PPC64H) */ |
407 |
case POWERPC_EXCP_TRACE: /* Trace exception */ |
408 |
/* Nothing to do:
|
409 |
* we use this exception to emulate step-by-step execution mode.
|
410 |
*/
|
411 |
break;
|
412 |
#if defined(TARGET_PPC64H) /* PowerPC 64 with hypervisor mode support */ |
413 |
case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */ |
414 |
cpu_abort(env, "Hypervisor data storage exception "
|
415 |
"while in user mode. Aborting\n");
|
416 |
break;
|
417 |
case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */ |
418 |
cpu_abort(env, "Hypervisor instruction storage exception "
|
419 |
"while in user mode. Aborting\n");
|
420 |
break;
|
421 |
case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */ |
422 |
cpu_abort(env, "Hypervisor data segment exception "
|
423 |
"while in user mode. Aborting\n");
|
424 |
break;
|
425 |
case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */ |
426 |
cpu_abort(env, "Hypervisor instruction segment exception "
|
427 |
"while in user mode. Aborting\n");
|
428 |
break;
|
429 |
#endif /* defined(TARGET_PPC64H) */ |
430 |
case POWERPC_EXCP_VPU: /* Vector unavailable exception */ |
431 |
EXCP_DUMP(env, "No Altivec instructions allowed\n");
|
432 |
info.si_signo = SIGILL; |
433 |
info.si_errno = 0;
|
434 |
info.si_code = ILL_COPROC; |
435 |
info.si_addr = (void*)(env->nip - 4); |
436 |
queue_signal(info.si_signo, &info); |
437 |
break;
|
438 |
case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */ |
439 |
cpu_abort(env, "Programable interval timer interrupt "
|
440 |
"while in user mode. Aborting\n");
|
441 |
break;
|
442 |
case POWERPC_EXCP_IO: /* IO error exception */ |
443 |
cpu_abort(env, "IO error exception while in user mode. "
|
444 |
"Aborting\n");
|
445 |
break;
|
446 |
case POWERPC_EXCP_RUNM: /* Run mode exception */ |
447 |
cpu_abort(env, "Run mode exception while in user mode. "
|
448 |
"Aborting\n");
|
449 |
break;
|
450 |
case POWERPC_EXCP_EMUL: /* Emulation trap exception */ |
451 |
cpu_abort(env, "Emulation trap exception not handled\n");
|
452 |
break;
|
453 |
case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */ |
454 |
cpu_abort(env, "Instruction fetch TLB exception "
|
455 |
"while in user-mode. Aborting");
|
456 |
break;
|
457 |
case POWERPC_EXCP_DLTLB: /* Data load TLB miss */ |
458 |
cpu_abort(env, "Data load TLB exception while in user-mode. "
|
459 |
"Aborting");
|
460 |
break;
|
461 |
case POWERPC_EXCP_DSTLB: /* Data store TLB miss */ |
462 |
cpu_abort(env, "Data store TLB exception while in user-mode. "
|
463 |
"Aborting");
|
464 |
break;
|
465 |
case POWERPC_EXCP_FPA: /* Floating-point assist exception */ |
466 |
cpu_abort(env, "Floating-point assist exception not handled\n");
|
467 |
break;
|
468 |
case POWERPC_EXCP_IABR: /* Instruction address breakpoint */ |
469 |
cpu_abort(env, "Instruction address breakpoint exception "
|
470 |
"not handled\n");
|
471 |
break;
|
472 |
case POWERPC_EXCP_SMI: /* System management interrupt */ |
473 |
cpu_abort(env, "System management interrupt while in user mode. "
|
474 |
"Aborting\n");
|
475 |
break;
|
476 |
case POWERPC_EXCP_THERM: /* Thermal interrupt */ |
477 |
cpu_abort(env, "Thermal interrupt interrupt while in user mode. "
|
478 |
"Aborting\n");
|
479 |
break;
|
480 |
case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */ |
481 |
cpu_abort(env, "Performance monitor exception not handled\n");
|
482 |
break;
|
483 |
case POWERPC_EXCP_VPUA: /* Vector assist exception */ |
484 |
cpu_abort(env, "Vector assist exception not handled\n");
|
485 |
break;
|
486 |
case POWERPC_EXCP_SOFTP: /* Soft patch exception */ |
487 |
cpu_abort(env, "Soft patch exception not handled\n");
|
488 |
break;
|
489 |
case POWERPC_EXCP_MAINT: /* Maintenance exception */ |
490 |
cpu_abort(env, "Maintenance exception while in user mode. "
|
491 |
"Aborting\n");
|
492 |
break;
|
493 |
case POWERPC_EXCP_STOP: /* stop translation */ |
494 |
/* We did invalidate the instruction cache. Go on */
|
495 |
break;
|
496 |
case POWERPC_EXCP_BRANCH: /* branch instruction: */ |
497 |
/* We just stopped because of a branch. Go on */
|
498 |
break;
|
499 |
case POWERPC_EXCP_SYSCALL_USER:
|
500 |
/* system call in user-mode emulation */
|
501 |
/* system call */
|
502 |
if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0) |
503 |
ret = do_unix_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 |
else if(((int)env->gpr[0])<0) |
507 |
ret = do_mach_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], |
508 |
env->gpr[5], env->gpr[6], env->gpr[7], |
509 |
env->gpr[8], env->gpr[9], env->gpr[10]); |
510 |
else
|
511 |
ret = do_thread_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], |
512 |
env->gpr[5], env->gpr[6], env->gpr[7], |
513 |
env->gpr[8], env->gpr[9], env->gpr[10]); |
514 |
|
515 |
/* Unix syscall error signaling */
|
516 |
if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0) |
517 |
{ |
518 |
if( (int)ret < 0 ) |
519 |
env->nip += 0;
|
520 |
else
|
521 |
env->nip += 4;
|
522 |
} |
523 |
|
524 |
/* Return value */
|
525 |
env->gpr[3] = ret;
|
526 |
break;
|
527 |
case EXCP_INTERRUPT:
|
528 |
/* just indicate that signals should be handled asap */
|
529 |
break;
|
530 |
default:
|
531 |
cpu_abort(env, "Unknown exception 0x%d. Aborting\n", trapnr);
|
532 |
break;
|
533 |
} |
534 |
process_pending_signals(env); |
535 |
} |
536 |
} |
537 |
#endif
|
538 |
|
539 |
|
540 |
#ifdef TARGET_I386
|
541 |
|
542 |
/***********************************************************/
|
543 |
/* CPUX86 core interface */
|
544 |
|
545 |
uint64_t cpu_get_tsc(CPUX86State *env) |
546 |
{ |
547 |
return cpu_get_real_ticks();
|
548 |
} |
549 |
|
550 |
void
|
551 |
write_dt(void *ptr, unsigned long addr, unsigned long limit, |
552 |
int flags)
|
553 |
{ |
554 |
unsigned int e1, e2; |
555 |
e1 = (addr << 16) | (limit & 0xffff); |
556 |
e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); |
557 |
e2 |= flags; |
558 |
stl((uint8_t *)ptr, e1); |
559 |
stl((uint8_t *)ptr + 4, e2);
|
560 |
} |
561 |
|
562 |
static void set_gate(void *ptr, unsigned int type, unsigned int dpl, |
563 |
unsigned long addr, unsigned int sel) |
564 |
{ |
565 |
unsigned int e1, e2; |
566 |
e1 = (addr & 0xffff) | (sel << 16); |
567 |
e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); |
568 |
stl((uint8_t *)ptr, e1); |
569 |
stl((uint8_t *)ptr + 4, e2);
|
570 |
} |
571 |
|
572 |
#define GDT_TABLE_SIZE 14 |
573 |
#define LDT_TABLE_SIZE 15 |
574 |
#define IDT_TABLE_SIZE 256 |
575 |
#define TSS_SIZE 104 |
576 |
uint64_t gdt_table[GDT_TABLE_SIZE]; |
577 |
uint64_t ldt_table[LDT_TABLE_SIZE]; |
578 |
uint64_t idt_table[IDT_TABLE_SIZE]; |
579 |
uint32_t tss[TSS_SIZE]; |
580 |
|
581 |
/* only dpl matters as we do only user space emulation */
|
582 |
static void set_idt(int n, unsigned int dpl) |
583 |
{ |
584 |
set_gate(idt_table + n, 0, dpl, 0, 0); |
585 |
} |
586 |
|
587 |
/* ABI convention: after a syscall if there was an error the CF flag is set */
|
588 |
static inline void set_error(CPUX86State *env, int ret) |
589 |
{ |
590 |
if(ret<0) |
591 |
env->eflags = env->eflags | 0x1;
|
592 |
else
|
593 |
env->eflags &= ~0x1;
|
594 |
env->regs[R_EAX] = ret; |
595 |
} |
596 |
|
597 |
void cpu_loop(CPUX86State *env)
|
598 |
{ |
599 |
int trapnr;
|
600 |
int ret;
|
601 |
uint8_t *pc; |
602 |
target_siginfo_t info; |
603 |
|
604 |
for(;;) {
|
605 |
trapnr = cpu_x86_exec(env); |
606 |
uint32_t *params = (uint32_t *)env->regs[R_ESP]; |
607 |
switch(trapnr) {
|
608 |
case 0x79: /* Our commpage hack back door exit is here */ |
609 |
do_commpage(env, env->eip, *(params + 1), *(params + 2), |
610 |
*(params + 3), *(params + 4), |
611 |
*(params + 5), *(params + 6), |
612 |
*(params + 7), *(params + 8)); |
613 |
break;
|
614 |
case 0x81: /* mach syscall */ |
615 |
{ |
616 |
ret = do_mach_syscall(env, env->regs[R_EAX], |
617 |
*(params + 1), *(params + 2), |
618 |
*(params + 3), *(params + 4), |
619 |
*(params + 5), *(params + 6), |
620 |
*(params + 7), *(params + 8)); |
621 |
set_error(env, ret); |
622 |
break;
|
623 |
} |
624 |
case 0x90: /* unix backdoor */ |
625 |
{ |
626 |
/* after sysenter, stack is in R_ECX, new eip in R_EDX (sysexit will flip them back)*/
|
627 |
int saved_stack = env->regs[R_ESP];
|
628 |
env->regs[R_ESP] = env->regs[R_ECX]; |
629 |
|
630 |
ret = do_unix_syscall(env, env->regs[R_EAX]); |
631 |
|
632 |
env->regs[R_ECX] = env->regs[R_ESP]; |
633 |
env->regs[R_ESP] = saved_stack; |
634 |
|
635 |
set_error(env, ret); |
636 |
break;
|
637 |
} |
638 |
case 0x80: /* unix syscall */ |
639 |
{ |
640 |
ret = do_unix_syscall(env, env->regs[R_EAX]/*,
|
641 |
*(params + 1), *(params + 2),
|
642 |
*(params + 3), *(params + 4),
|
643 |
*(params + 5), *(params + 6),
|
644 |
*(params + 7), *(params + 8)*/);
|
645 |
set_error(env, ret); |
646 |
break;
|
647 |
} |
648 |
case 0x82: /* thread syscall */ |
649 |
{ |
650 |
ret = do_thread_syscall(env, env->regs[R_EAX], |
651 |
*(params + 1), *(params + 2), |
652 |
*(params + 3), *(params + 4), |
653 |
*(params + 5), *(params + 6), |
654 |
*(params + 7), *(params + 8)); |
655 |
set_error(env, ret); |
656 |
break;
|
657 |
} |
658 |
case EXCP0B_NOSEG:
|
659 |
case EXCP0C_STACK:
|
660 |
info.si_signo = SIGBUS; |
661 |
info.si_errno = 0;
|
662 |
info.si_code = BUS_NOOP; |
663 |
info.si_addr = 0;
|
664 |
gdb_handlesig (env, SIGBUS); |
665 |
queue_signal(info.si_signo, &info); |
666 |
break;
|
667 |
case EXCP0D_GPF:
|
668 |
info.si_signo = SIGSEGV; |
669 |
info.si_errno = 0;
|
670 |
info.si_code = SEGV_NOOP; |
671 |
info.si_addr = 0;
|
672 |
gdb_handlesig (env, SIGSEGV); |
673 |
queue_signal(info.si_signo, &info); |
674 |
break;
|
675 |
case EXCP0E_PAGE:
|
676 |
info.si_signo = SIGSEGV; |
677 |
info.si_errno = 0;
|
678 |
if (!(env->error_code & 1)) |
679 |
info.si_code = SEGV_MAPERR; |
680 |
else
|
681 |
info.si_code = SEGV_ACCERR; |
682 |
info.si_addr = (void*)env->cr[2]; |
683 |
gdb_handlesig (env, SIGSEGV); |
684 |
queue_signal(info.si_signo, &info); |
685 |
break;
|
686 |
case EXCP00_DIVZ:
|
687 |
/* division by zero */
|
688 |
info.si_signo = SIGFPE; |
689 |
info.si_errno = 0;
|
690 |
info.si_code = FPE_INTDIV; |
691 |
info.si_addr = (void*)env->eip;
|
692 |
gdb_handlesig (env, SIGFPE); |
693 |
queue_signal(info.si_signo, &info); |
694 |
break;
|
695 |
case EXCP01_SSTP:
|
696 |
case EXCP03_INT3:
|
697 |
info.si_signo = SIGTRAP; |
698 |
info.si_errno = 0;
|
699 |
info.si_code = TRAP_BRKPT; |
700 |
info.si_addr = (void*)env->eip;
|
701 |
gdb_handlesig (env, SIGTRAP); |
702 |
queue_signal(info.si_signo, &info); |
703 |
break;
|
704 |
case EXCP04_INTO:
|
705 |
case EXCP05_BOUND:
|
706 |
info.si_signo = SIGSEGV; |
707 |
info.si_errno = 0;
|
708 |
info.si_code = SEGV_NOOP; |
709 |
info.si_addr = 0;
|
710 |
gdb_handlesig (env, SIGSEGV); |
711 |
queue_signal(info.si_signo, &info); |
712 |
break;
|
713 |
case EXCP06_ILLOP:
|
714 |
info.si_signo = SIGILL; |
715 |
info.si_errno = 0;
|
716 |
info.si_code = ILL_ILLOPN; |
717 |
info.si_addr = (void*)env->eip;
|
718 |
gdb_handlesig (env, SIGILL); |
719 |
queue_signal(info.si_signo, &info); |
720 |
break;
|
721 |
case EXCP_INTERRUPT:
|
722 |
/* just indicate that signals should be handled asap */
|
723 |
break;
|
724 |
case EXCP_DEBUG:
|
725 |
{ |
726 |
int sig;
|
727 |
|
728 |
sig = gdb_handlesig (env, SIGTRAP); |
729 |
if (sig)
|
730 |
{ |
731 |
info.si_signo = sig; |
732 |
info.si_errno = 0;
|
733 |
info.si_code = TRAP_BRKPT; |
734 |
queue_signal(info.si_signo, &info); |
735 |
} |
736 |
} |
737 |
break;
|
738 |
default:
|
739 |
pc = (void*)(env->segs[R_CS].base + env->eip);
|
740 |
fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n",
|
741 |
(long)pc, trapnr);
|
742 |
abort(); |
743 |
} |
744 |
process_pending_signals(env); |
745 |
} |
746 |
} |
747 |
#endif
|
748 |
|
749 |
void usage(void) |
750 |
{ |
751 |
printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n" |
752 |
"usage: qemu-" TARGET_ARCH " [-h] [-d opts] [-L path] [-s size] program [arguments...]\n" |
753 |
"Darwin CPU emulator (compiled for %s emulation)\n"
|
754 |
"\n"
|
755 |
"-h print this help\n"
|
756 |
"-L path set the %s library path (default='%s')\n"
|
757 |
"-s size set the stack size in bytes (default=%ld)\n"
|
758 |
"\n"
|
759 |
"debug options:\n"
|
760 |
#ifdef USE_CODE_COPY
|
761 |
"-no-code-copy disable code copy acceleration\n"
|
762 |
#endif
|
763 |
"-d options activate log (logfile='%s')\n"
|
764 |
"-g wait for gdb on port 1234\n"
|
765 |
"-p pagesize set the host page size to 'pagesize'\n",
|
766 |
TARGET_ARCH, |
767 |
TARGET_ARCH, |
768 |
interp_prefix, |
769 |
stack_size, |
770 |
DEBUG_LOGFILE); |
771 |
_exit(1);
|
772 |
} |
773 |
|
774 |
/* XXX: currently only used for async signals (see signal.c) */
|
775 |
CPUState *global_env; |
776 |
/* used only if single thread */
|
777 |
CPUState *cpu_single_env = NULL;
|
778 |
|
779 |
/* used to free thread contexts */
|
780 |
TaskState *first_task_state; |
781 |
|
782 |
int main(int argc, char **argv) |
783 |
{ |
784 |
const char *filename; |
785 |
struct target_pt_regs regs1, *regs = ®s1;
|
786 |
TaskState ts1, *ts = &ts1; |
787 |
CPUState *env; |
788 |
int optind;
|
789 |
short use_gdbstub = 0; |
790 |
const char *r; |
791 |
|
792 |
if (argc <= 1) |
793 |
usage(); |
794 |
|
795 |
/* init debug */
|
796 |
cpu_set_log_filename(DEBUG_LOGFILE); |
797 |
|
798 |
optind = 1;
|
799 |
for(;;) {
|
800 |
if (optind >= argc)
|
801 |
break;
|
802 |
r = argv[optind]; |
803 |
if (r[0] != '-') |
804 |
break;
|
805 |
optind++; |
806 |
r++; |
807 |
if (!strcmp(r, "-")) { |
808 |
break;
|
809 |
} else if (!strcmp(r, "d")) { |
810 |
int mask;
|
811 |
CPULogItem *item; |
812 |
|
813 |
if (optind >= argc)
|
814 |
break;
|
815 |
|
816 |
r = argv[optind++]; |
817 |
mask = cpu_str_to_log_mask(r); |
818 |
if (!mask) {
|
819 |
printf("Log items (comma separated):\n");
|
820 |
for(item = cpu_log_items; item->mask != 0; item++) { |
821 |
printf("%-10s %s\n", item->name, item->help);
|
822 |
} |
823 |
exit(1);
|
824 |
} |
825 |
cpu_set_log(mask); |
826 |
} else if (!strcmp(r, "s")) { |
827 |
r = argv[optind++]; |
828 |
stack_size = strtol(r, (char **)&r, 0); |
829 |
if (stack_size <= 0) |
830 |
usage(); |
831 |
if (*r == 'M') |
832 |
stack_size *= 1024 * 1024; |
833 |
else if (*r == 'k' || *r == 'K') |
834 |
stack_size *= 1024;
|
835 |
} else if (!strcmp(r, "L")) { |
836 |
interp_prefix = argv[optind++]; |
837 |
} else if (!strcmp(r, "p")) { |
838 |
qemu_host_page_size = atoi(argv[optind++]); |
839 |
if (qemu_host_page_size == 0 || |
840 |
(qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { |
841 |
fprintf(stderr, "page size must be a power of two\n");
|
842 |
exit(1);
|
843 |
} |
844 |
} else
|
845 |
if (!strcmp(r, "g")) { |
846 |
use_gdbstub = 1;
|
847 |
} else
|
848 |
#ifdef USE_CODE_COPY
|
849 |
if (!strcmp(r, "no-code-copy")) { |
850 |
code_copy_enabled = 0;
|
851 |
} else
|
852 |
#endif
|
853 |
{ |
854 |
usage(); |
855 |
} |
856 |
} |
857 |
if (optind >= argc)
|
858 |
usage(); |
859 |
filename = argv[optind]; |
860 |
|
861 |
/* Zero out regs */
|
862 |
memset(regs, 0, sizeof(struct target_pt_regs)); |
863 |
|
864 |
/* NOTE: we need to init the CPU at this stage to get
|
865 |
qemu_host_page_size */
|
866 |
env = cpu_init(); |
867 |
|
868 |
printf("Starting %s with qemu\n----------------\n", filename);
|
869 |
|
870 |
commpage_init(); |
871 |
|
872 |
if (mach_exec(filename, argv+optind, environ, regs) != 0) { |
873 |
printf("Error loading %s\n", filename);
|
874 |
_exit(1);
|
875 |
} |
876 |
|
877 |
syscall_init(); |
878 |
signal_init(); |
879 |
global_env = env; |
880 |
|
881 |
/* build Task State */
|
882 |
memset(ts, 0, sizeof(TaskState)); |
883 |
env->opaque = ts; |
884 |
ts->used = 1;
|
885 |
env->user_mode_only = 1;
|
886 |
|
887 |
#if defined(TARGET_I386)
|
888 |
cpu_x86_set_cpl(env, 3);
|
889 |
|
890 |
env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK;
|
891 |
env->hflags |= HF_PE_MASK; |
892 |
|
893 |
if (env->cpuid_features & CPUID_SSE) {
|
894 |
env->cr[4] |= CR4_OSFXSR_MASK;
|
895 |
env->hflags |= HF_OSFXSR_MASK; |
896 |
} |
897 |
|
898 |
/* flags setup : we activate the IRQs by default as in user mode */
|
899 |
env->eflags |= IF_MASK; |
900 |
|
901 |
/* darwin register setup */
|
902 |
env->regs[R_EAX] = regs->eax; |
903 |
env->regs[R_EBX] = regs->ebx; |
904 |
env->regs[R_ECX] = regs->ecx; |
905 |
env->regs[R_EDX] = regs->edx; |
906 |
env->regs[R_ESI] = regs->esi; |
907 |
env->regs[R_EDI] = regs->edi; |
908 |
env->regs[R_EBP] = regs->ebp; |
909 |
env->regs[R_ESP] = regs->esp; |
910 |
env->eip = regs->eip; |
911 |
|
912 |
/* Darwin LDT setup */
|
913 |
/* 2 - User code segment
|
914 |
3 - User data segment
|
915 |
4 - User cthread */
|
916 |
bzero(ldt_table, LDT_TABLE_SIZE * sizeof(ldt_table[0])); |
917 |
env->ldt.base = (uint32_t) ldt_table; |
918 |
env->ldt.limit = sizeof(ldt_table) - 1; |
919 |
|
920 |
write_dt(ldt_table + 2, 0, 0xfffff, |
921 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
922 |
(3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); |
923 |
write_dt(ldt_table + 3, 0, 0xfffff, |
924 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
925 |
(3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); |
926 |
write_dt(ldt_table + 4, 0, 0xfffff, |
927 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | |
928 |
(3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); |
929 |
|
930 |
/* Darwin GDT setup.
|
931 |
* has changed a lot between old Darwin/x86 (pre-Mac Intel) and Mac OS X/x86,
|
932 |
now everything is done via int 0x81(mach) int 0x82 (thread) and sysenter/sysexit(unix) */
|
933 |
bzero(gdt_table, sizeof(gdt_table));
|
934 |
env->gdt.base = (uint32_t)gdt_table; |
935 |
env->gdt.limit = sizeof(gdt_table) - 1; |
936 |
|
937 |
/* Set up a back door to handle sysenter syscalls (unix) */
|
938 |
char * syscallbackdoor = malloc(64); |
939 |
page_set_flags((int)syscallbackdoor, (int)syscallbackdoor + 64, PROT_EXEC | PROT_READ | PAGE_VALID); |
940 |
|
941 |
int i = 0; |
942 |
syscallbackdoor[i++] = 0xcd;
|
943 |
syscallbackdoor[i++] = 0x90; /* int 0x90 */ |
944 |
syscallbackdoor[i++] = 0x0F;
|
945 |
syscallbackdoor[i++] = 0x35; /* sysexit */ |
946 |
|
947 |
/* Darwin sysenter/sysexit setup */
|
948 |
env->sysenter_cs = 0x1; //XXX |
949 |
env->sysenter_eip = (int)syscallbackdoor;
|
950 |
env->sysenter_esp = (int)malloc(64); |
951 |
|
952 |
/* Darwin TSS setup
|
953 |
This must match up with GDT[4] */
|
954 |
env->tr.base = (uint32_t) tss; |
955 |
env->tr.limit = sizeof(tss) - 1; |
956 |
env->tr.flags = DESC_P_MASK | (0x9 << DESC_TYPE_SHIFT);
|
957 |
stw(tss + 2, 0x10); // ss0 = 0x10 = GDT[2] = Kernel Data Segment |
958 |
|
959 |
/* Darwin interrupt setup */
|
960 |
bzero(idt_table, sizeof(idt_table));
|
961 |
env->idt.base = (uint32_t) idt_table; |
962 |
env->idt.limit = sizeof(idt_table) - 1; |
963 |
set_idt(0, 0); |
964 |
set_idt(1, 0); |
965 |
set_idt(2, 0); |
966 |
set_idt(3, 3); |
967 |
set_idt(4, 3); |
968 |
set_idt(5, 3); |
969 |
set_idt(6, 0); |
970 |
set_idt(7, 0); |
971 |
set_idt(8, 0); |
972 |
set_idt(9, 0); |
973 |
set_idt(10, 0); |
974 |
set_idt(11, 0); |
975 |
set_idt(12, 0); |
976 |
set_idt(13, 0); |
977 |
set_idt(14, 0); |
978 |
set_idt(15, 0); |
979 |
set_idt(16, 0); |
980 |
set_idt(17, 0); |
981 |
set_idt(18, 0); |
982 |
set_idt(19, 0); |
983 |
/* Syscalls are done via
|
984 |
int 0x80 (unix) (rarely used)
|
985 |
int 0x81 (mach)
|
986 |
int 0x82 (thread)
|
987 |
int 0x83 (diag) (not handled here)
|
988 |
sysenter/sysexit (unix) -> we redirect that to int 0x90 */
|
989 |
set_idt(0x79, 3); /* Commpage hack, here is our backdoor interrupt */ |
990 |
set_idt(0x80, 3); /* Unix Syscall */ |
991 |
set_idt(0x81, 3); /* Mach Syscalls */ |
992 |
set_idt(0x82, 3); /* thread Syscalls */ |
993 |
|
994 |
set_idt(0x90, 3); /* qemu-darwin-user's Unix syscalls backdoor */ |
995 |
|
996 |
|
997 |
cpu_x86_load_seg(env, R_CS, __USER_CS); |
998 |
cpu_x86_load_seg(env, R_DS, __USER_DS); |
999 |
cpu_x86_load_seg(env, R_ES, __USER_DS); |
1000 |
cpu_x86_load_seg(env, R_SS, __USER_DS); |
1001 |
cpu_x86_load_seg(env, R_FS, __USER_DS); |
1002 |
cpu_x86_load_seg(env, R_GS, __USER_DS); |
1003 |
|
1004 |
#elif defined(TARGET_PPC)
|
1005 |
{ |
1006 |
int i;
|
1007 |
env->nip = regs->nip; |
1008 |
for(i = 0; i < 32; i++) { |
1009 |
env->gpr[i] = regs->gpr[i]; |
1010 |
} |
1011 |
} |
1012 |
#else
|
1013 |
#error unsupported target CPU
|
1014 |
#endif
|
1015 |
|
1016 |
if (use_gdbstub) {
|
1017 |
printf("Waiting for gdb Connection on port 1234...\n");
|
1018 |
gdbserver_start (1234);
|
1019 |
gdb_handlesig(env, 0);
|
1020 |
} |
1021 |
|
1022 |
cpu_loop(env); |
1023 |
/* never exits */
|
1024 |
return 0; |
1025 |
} |