]>
Commit | Line | Data |
---|---|---|
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 | |
530e7615 BS |
19 | * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
20 | * MA 02110-1301, USA. | |
831b7825 TS |
21 | */ |
22 | #include <stdlib.h> | |
23 | #include <stdio.h> | |
24 | #include <stdarg.h> | |
25 | #include <string.h> | |
26 | #include <errno.h> | |
27 | #include <unistd.h> | |
28 | ||
29 | #include <sys/syscall.h> | |
30 | #include <sys/mman.h> | |
31 | ||
32 | #include "qemu.h" | |
33 | ||
34 | #define DEBUG_LOGFILE "/tmp/qemu.log" | |
35 | ||
36 | #ifdef __APPLE__ | |
37 | #include <crt_externs.h> | |
38 | # define environ (*_NSGetEnviron()) | |
39 | #endif | |
40 | ||
41 | #include <mach/mach_init.h> | |
42 | #include <mach/vm_map.h> | |
43 | ||
44 | const char *interp_prefix = ""; | |
45 | ||
46 | asm(".zerofill __STD_PROG_ZONE, __STD_PROG_ZONE, __std_prog_zone, 0x0dfff000"); | |
47 | ||
48 | /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so | |
49 | we allocate a bigger stack. Need a better solution, for example | |
50 | by remapping the process stack directly at the right place */ | |
51 | unsigned long stack_size = 512 * 1024; | |
52 | ||
53 | void qerror(const char *fmt, ...) | |
54 | { | |
55 | va_list ap; | |
56 | ||
57 | va_start(ap, fmt); | |
58 | vfprintf(stderr, fmt, ap); | |
59 | va_end(ap); | |
60 | fprintf(stderr, "\n"); | |
61 | exit(1); | |
62 | } | |
63 | ||
64 | void gemu_log(const char *fmt, ...) | |
65 | { | |
66 | va_list ap; | |
67 | ||
68 | va_start(ap, fmt); | |
69 | vfprintf(stderr, fmt, ap); | |
70 | va_end(ap); | |
71 | } | |
72 | ||
73 | void cpu_outb(CPUState *env, int addr, int val) | |
74 | { | |
75 | fprintf(stderr, "outb: port=0x%04x, data=%02x\n", addr, val); | |
76 | } | |
77 | ||
78 | void cpu_outw(CPUState *env, int addr, int val) | |
79 | { | |
80 | fprintf(stderr, "outw: port=0x%04x, data=%04x\n", addr, val); | |
81 | } | |
82 | ||
83 | void cpu_outl(CPUState *env, int addr, int val) | |
84 | { | |
85 | fprintf(stderr, "outl: port=0x%04x, data=%08x\n", addr, val); | |
86 | } | |
87 | ||
88 | int cpu_inb(CPUState *env, int addr) | |
89 | { | |
90 | fprintf(stderr, "inb: port=0x%04x\n", addr); | |
91 | return 0; | |
92 | } | |
93 | ||
94 | int cpu_inw(CPUState *env, int addr) | |
95 | { | |
96 | fprintf(stderr, "inw: port=0x%04x\n", addr); | |
97 | return 0; | |
98 | } | |
99 | ||
100 | int cpu_inl(CPUState *env, int addr) | |
101 | { | |
102 | fprintf(stderr, "inl: port=0x%04x\n", addr); | |
103 | return 0; | |
104 | } | |
105 | ||
106 | int cpu_get_pic_interrupt(CPUState *env) | |
107 | { | |
108 | return -1; | |
109 | } | |
110 | #ifdef TARGET_PPC | |
111 | ||
112 | static inline uint64_t cpu_ppc_get_tb (CPUState *env) | |
113 | { | |
114 | /* TO FIX */ | |
115 | return 0; | |
116 | } | |
117 | ||
118 | uint32_t cpu_ppc_load_tbl (CPUState *env) | |
119 | { | |
120 | return cpu_ppc_get_tb(env) & 0xFFFFFFFF; | |
121 | } | |
122 | ||
123 | uint32_t cpu_ppc_load_tbu (CPUState *env) | |
124 | { | |
125 | return cpu_ppc_get_tb(env) >> 32; | |
126 | } | |
127 | ||
a062e36c | 128 | uint32_t cpu_ppc_load_atbl (CPUState *env) |
831b7825 | 129 | { |
a062e36c | 130 | return cpu_ppc_get_tb(env) & 0xFFFFFFFF; |
831b7825 TS |
131 | } |
132 | ||
a062e36c | 133 | uint32_t cpu_ppc_load_atbu (CPUState *env) |
c0009975 | 134 | { |
a062e36c | 135 | return cpu_ppc_get_tb(env) >> 32; |
c0009975 TS |
136 | } |
137 | ||
138 | uint32_t cpu_ppc601_load_rtcu (CPUState *env) | |
139 | { | |
140 | cpu_ppc_load_tbu(env); | |
141 | } | |
142 | ||
143 | uint32_t cpu_ppc601_load_rtcl (CPUState *env) | |
144 | { | |
145 | return cpu_ppc_load_tbl(env) & 0x3FFFFF80; | |
146 | } | |
147 | ||
e1833e1f JM |
148 | /* XXX: to be fixed */ |
149 | int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, target_ulong *valp) | |
150 | { | |
151 | return -1; | |
152 | } | |
153 | ||
154 | int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, target_ulong val) | |
155 | { | |
156 | return -1; | |
157 | } | |
158 | ||
159 | #define EXCP_DUMP(env, fmt, args...) \ | |
160 | do { \ | |
161 | fprintf(stderr, fmt , ##args); \ | |
162 | cpu_dump_state(env, stderr, fprintf, 0); \ | |
163 | if (loglevel != 0) { \ | |
164 | fprintf(logfile, fmt , ##args); \ | |
165 | cpu_dump_state(env, logfile, fprintf, 0); \ | |
166 | } \ | |
167 | } while (0) | |
168 | ||
831b7825 TS |
169 | void cpu_loop(CPUPPCState *env) |
170 | { | |
171 | int trapnr; | |
172 | uint32_t ret; | |
173 | target_siginfo_t info; | |
174 | ||
175 | for(;;) { | |
176 | trapnr = cpu_ppc_exec(env); | |
831b7825 | 177 | switch(trapnr) { |
e1833e1f JM |
178 | case POWERPC_EXCP_NONE: |
179 | /* Just go on */ | |
831b7825 | 180 | break; |
e1833e1f JM |
181 | case POWERPC_EXCP_CRITICAL: /* Critical input */ |
182 | cpu_abort(env, "Critical interrupt while in user mode. " | |
183 | "Aborting\n"); | |
831b7825 | 184 | break; |
e1833e1f JM |
185 | case POWERPC_EXCP_MCHECK: /* Machine check exception */ |
186 | cpu_abort(env, "Machine check exception while in user mode. " | |
187 | "Aborting\n"); | |
188 | break; | |
189 | case POWERPC_EXCP_DSI: /* Data storage exception */ | |
831b7825 TS |
190 | #ifndef DAR |
191 | /* To deal with multiple qemu header version as host for the darwin-user code */ | |
192 | # define DAR SPR_DAR | |
193 | #endif | |
e1833e1f JM |
194 | EXCP_DUMP(env, "Invalid data memory access: 0x" ADDRX "\n", |
195 | env->spr[SPR_DAR]); | |
831b7825 TS |
196 | /* Handle this via the gdb */ |
197 | gdb_handlesig (env, SIGSEGV); | |
198 | ||
199 | info.si_addr = (void*)env->nip; | |
200 | queue_signal(info.si_signo, &info); | |
201 | break; | |
e1833e1f JM |
202 | case POWERPC_EXCP_ISI: /* Instruction storage exception */ |
203 | EXCP_DUMP(env, "Invalid instruction fetch: 0x\n" ADDRX "\n", | |
204 | env->spr[SPR_DAR]); | |
831b7825 TS |
205 | /* Handle this via the gdb */ |
206 | gdb_handlesig (env, SIGSEGV); | |
207 | ||
208 | info.si_addr = (void*)(env->nip - 4); | |
209 | queue_signal(info.si_signo, &info); | |
210 | break; | |
e1833e1f JM |
211 | case POWERPC_EXCP_EXTERNAL: /* External input */ |
212 | cpu_abort(env, "External interrupt while in user mode. " | |
213 | "Aborting\n"); | |
214 | break; | |
215 | case POWERPC_EXCP_ALIGN: /* Alignment exception */ | |
216 | EXCP_DUMP(env, "Unaligned memory access\n"); | |
831b7825 TS |
217 | info.si_errno = 0; |
218 | info.si_code = BUS_ADRALN; | |
219 | info.si_addr = (void*)(env->nip - 4); | |
220 | queue_signal(info.si_signo, &info); | |
221 | break; | |
e1833e1f JM |
222 | case POWERPC_EXCP_PROGRAM: /* Program exception */ |
223 | /* XXX: check this */ | |
831b7825 | 224 | switch (env->error_code & ~0xF) { |
e1833e1f JM |
225 | case POWERPC_EXCP_FP: |
226 | EXCP_DUMP(env, "Floating point program exception\n"); | |
227 | /* Set FX */ | |
e1833e1f JM |
228 | info.si_signo = SIGFPE; |
229 | info.si_errno = 0; | |
230 | switch (env->error_code & 0xF) { | |
231 | case POWERPC_EXCP_FP_OX: | |
232 | info.si_code = FPE_FLTOVF; | |
233 | break; | |
234 | case POWERPC_EXCP_FP_UX: | |
235 | info.si_code = FPE_FLTUND; | |
236 | break; | |
237 | case POWERPC_EXCP_FP_ZX: | |
238 | case POWERPC_EXCP_FP_VXZDZ: | |
239 | info.si_code = FPE_FLTDIV; | |
240 | break; | |
241 | case POWERPC_EXCP_FP_XX: | |
242 | info.si_code = FPE_FLTRES; | |
243 | break; | |
244 | case POWERPC_EXCP_FP_VXSOFT: | |
245 | info.si_code = FPE_FLTINV; | |
246 | break; | |
7c58044c | 247 | case POWERPC_EXCP_FP_VXSNAN: |
e1833e1f JM |
248 | case POWERPC_EXCP_FP_VXISI: |
249 | case POWERPC_EXCP_FP_VXIDI: | |
250 | case POWERPC_EXCP_FP_VXIMZ: | |
251 | case POWERPC_EXCP_FP_VXVC: | |
252 | case POWERPC_EXCP_FP_VXSQRT: | |
253 | case POWERPC_EXCP_FP_VXCVI: | |
254 | info.si_code = FPE_FLTSUB; | |
831b7825 | 255 | break; |
831b7825 | 256 | default: |
e1833e1f JM |
257 | EXCP_DUMP(env, "Unknown floating point exception (%02x)\n", |
258 | env->error_code); | |
259 | break; | |
260 | } | |
261 | break; | |
262 | case POWERPC_EXCP_INVAL: | |
263 | EXCP_DUMP(env, "Invalid instruction\n"); | |
264 | info.si_signo = SIGILL; | |
265 | info.si_errno = 0; | |
266 | switch (env->error_code & 0xF) { | |
267 | case POWERPC_EXCP_INVAL_INVAL: | |
268 | info.si_code = ILL_ILLOPC; | |
269 | break; | |
270 | case POWERPC_EXCP_INVAL_LSWX: | |
271 | info.si_code = ILL_ILLOPN; | |
272 | break; | |
273 | case POWERPC_EXCP_INVAL_SPR: | |
274 | info.si_code = ILL_PRVREG; | |
275 | break; | |
276 | case POWERPC_EXCP_INVAL_FP: | |
277 | info.si_code = ILL_COPROC; | |
278 | break; | |
279 | default: | |
280 | EXCP_DUMP(env, "Unknown invalid operation (%02x)\n", | |
281 | env->error_code & 0xF); | |
282 | info.si_code = ILL_ILLADR; | |
283 | break; | |
284 | } | |
285 | /* Handle this via the gdb */ | |
286 | gdb_handlesig (env, SIGSEGV); | |
287 | break; | |
288 | case POWERPC_EXCP_PRIV: | |
289 | EXCP_DUMP(env, "Privilege violation\n"); | |
290 | info.si_signo = SIGILL; | |
291 | info.si_errno = 0; | |
292 | switch (env->error_code & 0xF) { | |
293 | case POWERPC_EXCP_PRIV_OPC: | |
294 | info.si_code = ILL_PRVOPC; | |
295 | break; | |
296 | case POWERPC_EXCP_PRIV_REG: | |
297 | info.si_code = ILL_PRVREG; | |
298 | break; | |
299 | default: | |
300 | EXCP_DUMP(env, "Unknown privilege violation (%02x)\n", | |
301 | env->error_code & 0xF); | |
302 | info.si_code = ILL_PRVOPC; | |
303 | break; | |
304 | } | |
305 | break; | |
306 | case POWERPC_EXCP_TRAP: | |
307 | cpu_abort(env, "Tried to call a TRAP\n"); | |
308 | break; | |
309 | default: | |
310 | /* Should not happen ! */ | |
311 | cpu_abort(env, "Unknown program exception (%02x)\n", | |
312 | env->error_code); | |
313 | break; | |
831b7825 TS |
314 | } |
315 | info.si_addr = (void*)(env->nip - 4); | |
316 | queue_signal(info.si_signo, &info); | |
317 | break; | |
e1833e1f JM |
318 | case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */ |
319 | EXCP_DUMP(env, "No floating point allowed\n"); | |
320 | info.si_signo = SIGILL; | |
831b7825 TS |
321 | info.si_errno = 0; |
322 | info.si_code = ILL_COPROC; | |
323 | info.si_addr = (void*)(env->nip - 4); | |
324 | queue_signal(info.si_signo, &info); | |
325 | break; | |
e1833e1f JM |
326 | case POWERPC_EXCP_SYSCALL: /* System call exception */ |
327 | cpu_abort(env, "Syscall exception while in user mode. " | |
328 | "Aborting\n"); | |
831b7825 | 329 | break; |
e1833e1f JM |
330 | case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */ |
331 | EXCP_DUMP(env, "No APU instruction allowed\n"); | |
332 | info.si_signo = SIGILL; | |
333 | info.si_errno = 0; | |
334 | info.si_code = ILL_COPROC; | |
335 | info.si_addr = (void*)(env->nip - 4); | |
336 | queue_signal(info.si_signo, &info); | |
337 | break; | |
338 | case POWERPC_EXCP_DECR: /* Decrementer exception */ | |
339 | cpu_abort(env, "Decrementer interrupt while in user mode. " | |
340 | "Aborting\n"); | |
341 | break; | |
342 | case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */ | |
343 | cpu_abort(env, "Fix interval timer interrupt while in user mode. " | |
344 | "Aborting\n"); | |
345 | break; | |
346 | case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */ | |
347 | cpu_abort(env, "Watchdog timer interrupt while in user mode. " | |
348 | "Aborting\n"); | |
831b7825 | 349 | break; |
e1833e1f JM |
350 | case POWERPC_EXCP_DTLB: /* Data TLB error */ |
351 | cpu_abort(env, "Data TLB exception while in user mode. " | |
352 | "Aborting\n"); | |
831b7825 | 353 | break; |
e1833e1f JM |
354 | case POWERPC_EXCP_ITLB: /* Instruction TLB error */ |
355 | cpu_abort(env, "Instruction TLB exception while in user mode. " | |
356 | "Aborting\n"); | |
831b7825 | 357 | break; |
e1833e1f | 358 | case POWERPC_EXCP_DEBUG: /* Debug interrupt */ |
831b7825 TS |
359 | gdb_handlesig (env, SIGTRAP); |
360 | break; | |
e1833e1f JM |
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; | |
e1833e1f JM |
386 | case POWERPC_EXCP_RESET: /* System reset exception */ |
387 | cpu_abort(env, "Reset interrupt while in user mode. " | |
388 | "Aborting\n"); | |
389 | break; | |
e1833e1f JM |
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; | |
e1833e1f JM |
398 | case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */ |
399 | cpu_abort(env, "Hypervisor decrementer interrupt " | |
400 | "while in user mode. Aborting\n"); | |
401 | break; | |
e1833e1f JM |
402 | case POWERPC_EXCP_TRACE: /* Trace exception */ |
403 | /* Nothing to do: | |
404 | * we use this exception to emulate step-by-step execution mode. | |
405 | */ | |
406 | break; | |
e1833e1f JM |
407 | case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */ |
408 | cpu_abort(env, "Hypervisor data storage exception " | |
409 | "while in user mode. Aborting\n"); | |
410 | break; | |
411 | case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */ | |
412 | cpu_abort(env, "Hypervisor instruction storage exception " | |
413 | "while in user mode. Aborting\n"); | |
414 | break; | |
415 | case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */ | |
416 | cpu_abort(env, "Hypervisor data segment exception " | |
417 | "while in user mode. Aborting\n"); | |
418 | break; | |
419 | case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */ | |
420 | cpu_abort(env, "Hypervisor instruction segment exception " | |
421 | "while in user mode. Aborting\n"); | |
422 | break; | |
e1833e1f JM |
423 | case POWERPC_EXCP_VPU: /* Vector unavailable exception */ |
424 | EXCP_DUMP(env, "No Altivec instructions allowed\n"); | |
425 | info.si_signo = SIGILL; | |
426 | info.si_errno = 0; | |
427 | info.si_code = ILL_COPROC; | |
428 | info.si_addr = (void*)(env->nip - 4); | |
429 | queue_signal(info.si_signo, &info); | |
430 | break; | |
431 | case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */ | |
432 | cpu_abort(env, "Programable interval timer interrupt " | |
433 | "while in user mode. Aborting\n"); | |
434 | break; | |
435 | case POWERPC_EXCP_IO: /* IO error exception */ | |
436 | cpu_abort(env, "IO error exception while in user mode. " | |
437 | "Aborting\n"); | |
438 | break; | |
439 | case POWERPC_EXCP_RUNM: /* Run mode exception */ | |
440 | cpu_abort(env, "Run mode exception while in user mode. " | |
441 | "Aborting\n"); | |
442 | break; | |
443 | case POWERPC_EXCP_EMUL: /* Emulation trap exception */ | |
444 | cpu_abort(env, "Emulation trap exception not handled\n"); | |
445 | break; | |
446 | case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */ | |
447 | cpu_abort(env, "Instruction fetch TLB exception " | |
448 | "while in user-mode. Aborting"); | |
449 | break; | |
450 | case POWERPC_EXCP_DLTLB: /* Data load TLB miss */ | |
451 | cpu_abort(env, "Data load TLB exception while in user-mode. " | |
452 | "Aborting"); | |
453 | break; | |
454 | case POWERPC_EXCP_DSTLB: /* Data store TLB miss */ | |
455 | cpu_abort(env, "Data store TLB exception while in user-mode. " | |
456 | "Aborting"); | |
457 | break; | |
458 | case POWERPC_EXCP_FPA: /* Floating-point assist exception */ | |
459 | cpu_abort(env, "Floating-point assist exception not handled\n"); | |
460 | break; | |
461 | case POWERPC_EXCP_IABR: /* Instruction address breakpoint */ | |
462 | cpu_abort(env, "Instruction address breakpoint exception " | |
463 | "not handled\n"); | |
464 | break; | |
465 | case POWERPC_EXCP_SMI: /* System management interrupt */ | |
466 | cpu_abort(env, "System management interrupt while in user mode. " | |
467 | "Aborting\n"); | |
468 | break; | |
469 | case POWERPC_EXCP_THERM: /* Thermal interrupt */ | |
470 | cpu_abort(env, "Thermal interrupt interrupt while in user mode. " | |
471 | "Aborting\n"); | |
472 | break; | |
473 | case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */ | |
474 | cpu_abort(env, "Performance monitor exception not handled\n"); | |
475 | break; | |
476 | case POWERPC_EXCP_VPUA: /* Vector assist exception */ | |
477 | cpu_abort(env, "Vector assist exception not handled\n"); | |
478 | break; | |
479 | case POWERPC_EXCP_SOFTP: /* Soft patch exception */ | |
480 | cpu_abort(env, "Soft patch exception not handled\n"); | |
481 | break; | |
482 | case POWERPC_EXCP_MAINT: /* Maintenance exception */ | |
483 | cpu_abort(env, "Maintenance exception while in user mode. " | |
484 | "Aborting\n"); | |
485 | break; | |
486 | case POWERPC_EXCP_STOP: /* stop translation */ | |
487 | /* We did invalidate the instruction cache. Go on */ | |
488 | break; | |
489 | case POWERPC_EXCP_BRANCH: /* branch instruction: */ | |
490 | /* We just stopped because of a branch. Go on */ | |
491 | break; | |
492 | case POWERPC_EXCP_SYSCALL_USER: | |
493 | /* system call in user-mode emulation */ | |
494 | /* system call */ | |
495 | if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0) | |
496 | ret = do_unix_syscall(env, env->gpr[0]/*, env->gpr[3], env->gpr[4], | |
497 | env->gpr[5], env->gpr[6], env->gpr[7], | |
498 | env->gpr[8], env->gpr[9], env->gpr[10]*/); | |
499 | else if(((int)env->gpr[0])<0) | |
500 | ret = do_mach_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], | |
501 | env->gpr[5], env->gpr[6], env->gpr[7], | |
502 | env->gpr[8], env->gpr[9], env->gpr[10]); | |
503 | else | |
504 | ret = do_thread_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], | |
505 | env->gpr[5], env->gpr[6], env->gpr[7], | |
506 | env->gpr[8], env->gpr[9], env->gpr[10]); | |
507 | ||
508 | /* Unix syscall error signaling */ | |
509 | if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0) | |
510 | { | |
511 | if( (int)ret < 0 ) | |
512 | env->nip += 0; | |
513 | else | |
514 | env->nip += 4; | |
831b7825 | 515 | } |
e1833e1f JM |
516 | |
517 | /* Return value */ | |
518 | env->gpr[3] = ret; | |
519 | break; | |
56ba31ff JM |
520 | case EXCP_INTERRUPT: |
521 | /* just indicate that signals should be handled asap */ | |
522 | break; | |
e1833e1f JM |
523 | default: |
524 | cpu_abort(env, "Unknown exception 0x%d. Aborting\n", trapnr); | |
525 | break; | |
831b7825 TS |
526 | } |
527 | process_pending_signals(env); | |
528 | } | |
529 | } | |
530 | #endif | |
531 | ||
532 | ||
533 | #ifdef TARGET_I386 | |
534 | ||
535 | /***********************************************************/ | |
536 | /* CPUX86 core interface */ | |
537 | ||
538 | uint64_t cpu_get_tsc(CPUX86State *env) | |
539 | { | |
540 | return cpu_get_real_ticks(); | |
541 | } | |
542 | ||
543 | void | |
544 | write_dt(void *ptr, unsigned long addr, unsigned long limit, | |
545 | int flags) | |
546 | { | |
547 | unsigned int e1, e2; | |
548 | e1 = (addr << 16) | (limit & 0xffff); | |
549 | e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); | |
550 | e2 |= flags; | |
551 | stl((uint8_t *)ptr, e1); | |
552 | stl((uint8_t *)ptr + 4, e2); | |
553 | } | |
554 | ||
555 | static void set_gate(void *ptr, unsigned int type, unsigned int dpl, | |
556 | unsigned long addr, unsigned int sel) | |
557 | { | |
558 | unsigned int e1, e2; | |
559 | e1 = (addr & 0xffff) | (sel << 16); | |
560 | e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); | |
561 | stl((uint8_t *)ptr, e1); | |
562 | stl((uint8_t *)ptr + 4, e2); | |
563 | } | |
564 | ||
565 | #define GDT_TABLE_SIZE 14 | |
566 | #define LDT_TABLE_SIZE 15 | |
567 | #define IDT_TABLE_SIZE 256 | |
568 | #define TSS_SIZE 104 | |
569 | uint64_t gdt_table[GDT_TABLE_SIZE]; | |
570 | uint64_t ldt_table[LDT_TABLE_SIZE]; | |
571 | uint64_t idt_table[IDT_TABLE_SIZE]; | |
572 | uint32_t tss[TSS_SIZE]; | |
573 | ||
574 | /* only dpl matters as we do only user space emulation */ | |
575 | static void set_idt(int n, unsigned int dpl) | |
576 | { | |
577 | set_gate(idt_table + n, 0, dpl, 0, 0); | |
578 | } | |
579 | ||
580 | /* ABI convention: after a syscall if there was an error the CF flag is set */ | |
46ea3397 | 581 | static inline void set_error(CPUX86State *env, int ret) |
831b7825 TS |
582 | { |
583 | if(ret<0) | |
584 | env->eflags = env->eflags | 0x1; | |
585 | else | |
586 | env->eflags &= ~0x1; | |
587 | env->regs[R_EAX] = ret; | |
588 | } | |
589 | ||
590 | void cpu_loop(CPUX86State *env) | |
591 | { | |
592 | int trapnr; | |
593 | int ret; | |
594 | uint8_t *pc; | |
595 | target_siginfo_t info; | |
596 | ||
597 | for(;;) { | |
598 | trapnr = cpu_x86_exec(env); | |
599 | uint32_t *params = (uint32_t *)env->regs[R_ESP]; | |
600 | switch(trapnr) { | |
601 | case 0x79: /* Our commpage hack back door exit is here */ | |
602 | do_commpage(env, env->eip, *(params + 1), *(params + 2), | |
603 | *(params + 3), *(params + 4), | |
604 | *(params + 5), *(params + 6), | |
605 | *(params + 7), *(params + 8)); | |
606 | break; | |
607 | case 0x81: /* mach syscall */ | |
608 | { | |
609 | ret = do_mach_syscall(env, env->regs[R_EAX], | |
610 | *(params + 1), *(params + 2), | |
611 | *(params + 3), *(params + 4), | |
612 | *(params + 5), *(params + 6), | |
613 | *(params + 7), *(params + 8)); | |
614 | set_error(env, ret); | |
615 | break; | |
616 | } | |
617 | case 0x90: /* unix backdoor */ | |
618 | { | |
619 | /* after sysenter, stack is in R_ECX, new eip in R_EDX (sysexit will flip them back)*/ | |
620 | int saved_stack = env->regs[R_ESP]; | |
621 | env->regs[R_ESP] = env->regs[R_ECX]; | |
622 | ||
623 | ret = do_unix_syscall(env, env->regs[R_EAX]); | |
624 | ||
625 | env->regs[R_ECX] = env->regs[R_ESP]; | |
626 | env->regs[R_ESP] = saved_stack; | |
627 | ||
628 | set_error(env, ret); | |
629 | break; | |
630 | } | |
631 | case 0x80: /* unix syscall */ | |
632 | { | |
633 | ret = do_unix_syscall(env, env->regs[R_EAX]/*, | |
634 | *(params + 1), *(params + 2), | |
635 | *(params + 3), *(params + 4), | |
636 | *(params + 5), *(params + 6), | |
637 | *(params + 7), *(params + 8)*/); | |
638 | set_error(env, ret); | |
639 | break; | |
640 | } | |
641 | case 0x82: /* thread syscall */ | |
642 | { | |
643 | ret = do_thread_syscall(env, env->regs[R_EAX], | |
644 | *(params + 1), *(params + 2), | |
645 | *(params + 3), *(params + 4), | |
646 | *(params + 5), *(params + 6), | |
647 | *(params + 7), *(params + 8)); | |
648 | set_error(env, ret); | |
649 | break; | |
650 | } | |
651 | case EXCP0B_NOSEG: | |
652 | case EXCP0C_STACK: | |
653 | info.si_signo = SIGBUS; | |
654 | info.si_errno = 0; | |
655 | info.si_code = BUS_NOOP; | |
656 | info.si_addr = 0; | |
657 | gdb_handlesig (env, SIGBUS); | |
658 | queue_signal(info.si_signo, &info); | |
659 | break; | |
660 | case EXCP0D_GPF: | |
661 | info.si_signo = SIGSEGV; | |
662 | info.si_errno = 0; | |
663 | info.si_code = SEGV_NOOP; | |
664 | info.si_addr = 0; | |
665 | gdb_handlesig (env, SIGSEGV); | |
666 | queue_signal(info.si_signo, &info); | |
667 | break; | |
668 | case EXCP0E_PAGE: | |
669 | info.si_signo = SIGSEGV; | |
670 | info.si_errno = 0; | |
671 | if (!(env->error_code & 1)) | |
672 | info.si_code = SEGV_MAPERR; | |
673 | else | |
674 | info.si_code = SEGV_ACCERR; | |
675 | info.si_addr = (void*)env->cr[2]; | |
676 | gdb_handlesig (env, SIGSEGV); | |
677 | queue_signal(info.si_signo, &info); | |
678 | break; | |
679 | case EXCP00_DIVZ: | |
680 | /* division by zero */ | |
681 | info.si_signo = SIGFPE; | |
682 | info.si_errno = 0; | |
683 | info.si_code = FPE_INTDIV; | |
684 | info.si_addr = (void*)env->eip; | |
685 | gdb_handlesig (env, SIGFPE); | |
686 | queue_signal(info.si_signo, &info); | |
687 | break; | |
688 | case EXCP01_SSTP: | |
689 | case EXCP03_INT3: | |
690 | info.si_signo = SIGTRAP; | |
691 | info.si_errno = 0; | |
692 | info.si_code = TRAP_BRKPT; | |
693 | info.si_addr = (void*)env->eip; | |
694 | gdb_handlesig (env, SIGTRAP); | |
695 | queue_signal(info.si_signo, &info); | |
696 | break; | |
697 | case EXCP04_INTO: | |
698 | case EXCP05_BOUND: | |
699 | info.si_signo = SIGSEGV; | |
700 | info.si_errno = 0; | |
701 | info.si_code = SEGV_NOOP; | |
702 | info.si_addr = 0; | |
703 | gdb_handlesig (env, SIGSEGV); | |
704 | queue_signal(info.si_signo, &info); | |
705 | break; | |
706 | case EXCP06_ILLOP: | |
707 | info.si_signo = SIGILL; | |
708 | info.si_errno = 0; | |
709 | info.si_code = ILL_ILLOPN; | |
710 | info.si_addr = (void*)env->eip; | |
711 | gdb_handlesig (env, SIGILL); | |
712 | queue_signal(info.si_signo, &info); | |
713 | break; | |
714 | case EXCP_INTERRUPT: | |
715 | /* just indicate that signals should be handled asap */ | |
716 | break; | |
717 | case EXCP_DEBUG: | |
718 | { | |
719 | int sig; | |
720 | ||
721 | sig = gdb_handlesig (env, SIGTRAP); | |
722 | if (sig) | |
723 | { | |
724 | info.si_signo = sig; | |
725 | info.si_errno = 0; | |
726 | info.si_code = TRAP_BRKPT; | |
727 | queue_signal(info.si_signo, &info); | |
728 | } | |
729 | } | |
730 | break; | |
731 | default: | |
732 | pc = (void*)(env->segs[R_CS].base + env->eip); | |
733 | fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n", | |
734 | (long)pc, trapnr); | |
735 | abort(); | |
736 | } | |
737 | process_pending_signals(env); | |
738 | } | |
739 | } | |
740 | #endif | |
741 | ||
742 | void usage(void) | |
743 | { | |
744 | printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n" | |
745 | "usage: qemu-" TARGET_ARCH " [-h] [-d opts] [-L path] [-s size] program [arguments...]\n" | |
746 | "Darwin CPU emulator (compiled for %s emulation)\n" | |
747 | "\n" | |
748 | "-h print this help\n" | |
1e2bed4f | 749 | "-L path set the %s library path (default='%s')\n" |
831b7825 TS |
750 | "-s size set the stack size in bytes (default=%ld)\n" |
751 | "\n" | |
752 | "debug options:\n" | |
1e2bed4f | 753 | "-d options activate log (logfile='%s')\n" |
831b7825 TS |
754 | "-g wait for gdb on port 1234\n" |
755 | "-p pagesize set the host page size to 'pagesize'\n", | |
756 | TARGET_ARCH, | |
1e2bed4f | 757 | TARGET_ARCH, |
831b7825 TS |
758 | interp_prefix, |
759 | stack_size, | |
760 | DEBUG_LOGFILE); | |
761 | _exit(1); | |
762 | } | |
763 | ||
764 | /* XXX: currently only used for async signals (see signal.c) */ | |
765 | CPUState *global_env; | |
766 | /* used only if single thread */ | |
767 | CPUState *cpu_single_env = NULL; | |
768 | ||
769 | /* used to free thread contexts */ | |
770 | TaskState *first_task_state; | |
771 | ||
772 | int main(int argc, char **argv) | |
773 | { | |
774 | const char *filename; | |
775 | struct target_pt_regs regs1, *regs = ®s1; | |
776 | TaskState ts1, *ts = &ts1; | |
777 | CPUState *env; | |
778 | int optind; | |
779 | short use_gdbstub = 0; | |
780 | const char *r; | |
aaed909a | 781 | const char *cpu_model; |
831b7825 TS |
782 | |
783 | if (argc <= 1) | |
784 | usage(); | |
785 | ||
786 | /* init debug */ | |
787 | cpu_set_log_filename(DEBUG_LOGFILE); | |
788 | ||
789 | optind = 1; | |
790 | for(;;) { | |
791 | if (optind >= argc) | |
792 | break; | |
793 | r = argv[optind]; | |
794 | if (r[0] != '-') | |
795 | break; | |
796 | optind++; | |
797 | r++; | |
798 | if (!strcmp(r, "-")) { | |
799 | break; | |
800 | } else if (!strcmp(r, "d")) { | |
801 | int mask; | |
802 | CPULogItem *item; | |
803 | ||
804 | if (optind >= argc) | |
805 | break; | |
806 | ||
807 | r = argv[optind++]; | |
808 | mask = cpu_str_to_log_mask(r); | |
809 | if (!mask) { | |
810 | printf("Log items (comma separated):\n"); | |
811 | for(item = cpu_log_items; item->mask != 0; item++) { | |
812 | printf("%-10s %s\n", item->name, item->help); | |
813 | } | |
814 | exit(1); | |
815 | } | |
816 | cpu_set_log(mask); | |
817 | } else if (!strcmp(r, "s")) { | |
818 | r = argv[optind++]; | |
819 | stack_size = strtol(r, (char **)&r, 0); | |
820 | if (stack_size <= 0) | |
821 | usage(); | |
822 | if (*r == 'M') | |
823 | stack_size *= 1024 * 1024; | |
824 | else if (*r == 'k' || *r == 'K') | |
825 | stack_size *= 1024; | |
826 | } else if (!strcmp(r, "L")) { | |
827 | interp_prefix = argv[optind++]; | |
828 | } else if (!strcmp(r, "p")) { | |
829 | qemu_host_page_size = atoi(argv[optind++]); | |
830 | if (qemu_host_page_size == 0 || | |
831 | (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { | |
832 | fprintf(stderr, "page size must be a power of two\n"); | |
833 | exit(1); | |
834 | } | |
835 | } else | |
836 | if (!strcmp(r, "g")) { | |
837 | use_gdbstub = 1; | |
31fca6ab JM |
838 | } else if (!strcmp(r, "cpu")) { |
839 | cpu_model = argv[optind++]; | |
840 | if (strcmp(cpu_model, "?") == 0) { | |
841 | /* XXX: implement xxx_cpu_list for targets that still miss it */ | |
842 | #if defined(cpu_list) | |
843 | cpu_list(stdout, &fprintf); | |
844 | #endif | |
845 | _exit(1); | |
846 | } | |
831b7825 | 847 | } else |
831b7825 TS |
848 | { |
849 | usage(); | |
850 | } | |
851 | } | |
852 | if (optind >= argc) | |
853 | usage(); | |
854 | filename = argv[optind]; | |
855 | ||
856 | /* Zero out regs */ | |
857 | memset(regs, 0, sizeof(struct target_pt_regs)); | |
858 | ||
31fca6ab | 859 | if (cpu_model == NULL) { |
aaed909a | 860 | #if defined(TARGET_I386) |
31fca6ab JM |
861 | #ifdef TARGET_X86_64 |
862 | cpu_model = "qemu64"; | |
863 | #else | |
864 | cpu_model = "qemu32"; | |
865 | #endif | |
aaed909a | 866 | #elif defined(TARGET_PPC) |
31fca6ab JM |
867 | #ifdef TARGET_PPC64 |
868 | cpu_model = "970"; | |
869 | #else | |
870 | cpu_model = "750"; | |
871 | #endif | |
aaed909a FB |
872 | #else |
873 | #error unsupported CPU | |
874 | #endif | |
31fca6ab | 875 | } |
aaed909a | 876 | |
26a5f13b | 877 | cpu_exec_init_all(0); |
31fca6ab JM |
878 | /* NOTE: we need to init the CPU at this stage to get |
879 | qemu_host_page_size */ | |
aaed909a | 880 | env = cpu_init(cpu_model); |
831b7825 TS |
881 | |
882 | printf("Starting %s with qemu\n----------------\n", filename); | |
883 | ||
884 | commpage_init(); | |
885 | ||
886 | if (mach_exec(filename, argv+optind, environ, regs) != 0) { | |
887 | printf("Error loading %s\n", filename); | |
888 | _exit(1); | |
889 | } | |
890 | ||
891 | syscall_init(); | |
892 | signal_init(); | |
893 | global_env = env; | |
894 | ||
895 | /* build Task State */ | |
896 | memset(ts, 0, sizeof(TaskState)); | |
897 | env->opaque = ts; | |
898 | ts->used = 1; | |
831b7825 TS |
899 | |
900 | #if defined(TARGET_I386) | |
901 | cpu_x86_set_cpl(env, 3); | |
902 | ||
903 | env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK; | |
904 | env->hflags |= HF_PE_MASK; | |
905 | ||
906 | if (env->cpuid_features & CPUID_SSE) { | |
907 | env->cr[4] |= CR4_OSFXSR_MASK; | |
908 | env->hflags |= HF_OSFXSR_MASK; | |
909 | } | |
910 | ||
911 | /* flags setup : we activate the IRQs by default as in user mode */ | |
912 | env->eflags |= IF_MASK; | |
913 | ||
914 | /* darwin register setup */ | |
915 | env->regs[R_EAX] = regs->eax; | |
916 | env->regs[R_EBX] = regs->ebx; | |
917 | env->regs[R_ECX] = regs->ecx; | |
918 | env->regs[R_EDX] = regs->edx; | |
919 | env->regs[R_ESI] = regs->esi; | |
920 | env->regs[R_EDI] = regs->edi; | |
921 | env->regs[R_EBP] = regs->ebp; | |
922 | env->regs[R_ESP] = regs->esp; | |
923 | env->eip = regs->eip; | |
924 | ||
925 | /* Darwin LDT setup */ | |
926 | /* 2 - User code segment | |
927 | 3 - User data segment | |
928 | 4 - User cthread */ | |
929 | bzero(ldt_table, LDT_TABLE_SIZE * sizeof(ldt_table[0])); | |
930 | env->ldt.base = (uint32_t) ldt_table; | |
931 | env->ldt.limit = sizeof(ldt_table) - 1; | |
932 | ||
933 | write_dt(ldt_table + 2, 0, 0xfffff, | |
934 | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | | |
935 | (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); | |
936 | write_dt(ldt_table + 3, 0, 0xfffff, | |
937 | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | | |
938 | (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); | |
939 | write_dt(ldt_table + 4, 0, 0xfffff, | |
940 | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | | |
941 | (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); | |
942 | ||
943 | /* Darwin GDT setup. | |
944 | * has changed a lot between old Darwin/x86 (pre-Mac Intel) and Mac OS X/x86, | |
945 | now everything is done via int 0x81(mach) int 0x82 (thread) and sysenter/sysexit(unix) */ | |
946 | bzero(gdt_table, sizeof(gdt_table)); | |
947 | env->gdt.base = (uint32_t)gdt_table; | |
948 | env->gdt.limit = sizeof(gdt_table) - 1; | |
949 | ||
950 | /* Set up a back door to handle sysenter syscalls (unix) */ | |
951 | char * syscallbackdoor = malloc(64); | |
952 | page_set_flags((int)syscallbackdoor, (int)syscallbackdoor + 64, PROT_EXEC | PROT_READ | PAGE_VALID); | |
953 | ||
954 | int i = 0; | |
955 | syscallbackdoor[i++] = 0xcd; | |
956 | syscallbackdoor[i++] = 0x90; /* int 0x90 */ | |
957 | syscallbackdoor[i++] = 0x0F; | |
958 | syscallbackdoor[i++] = 0x35; /* sysexit */ | |
959 | ||
960 | /* Darwin sysenter/sysexit setup */ | |
961 | env->sysenter_cs = 0x1; //XXX | |
962 | env->sysenter_eip = (int)syscallbackdoor; | |
963 | env->sysenter_esp = (int)malloc(64); | |
964 | ||
965 | /* Darwin TSS setup | |
966 | This must match up with GDT[4] */ | |
967 | env->tr.base = (uint32_t) tss; | |
968 | env->tr.limit = sizeof(tss) - 1; | |
969 | env->tr.flags = DESC_P_MASK | (0x9 << DESC_TYPE_SHIFT); | |
970 | stw(tss + 2, 0x10); // ss0 = 0x10 = GDT[2] = Kernel Data Segment | |
971 | ||
972 | /* Darwin interrupt setup */ | |
973 | bzero(idt_table, sizeof(idt_table)); | |
974 | env->idt.base = (uint32_t) idt_table; | |
975 | env->idt.limit = sizeof(idt_table) - 1; | |
976 | set_idt(0, 0); | |
977 | set_idt(1, 0); | |
978 | set_idt(2, 0); | |
979 | set_idt(3, 3); | |
980 | set_idt(4, 3); | |
981 | set_idt(5, 3); | |
982 | set_idt(6, 0); | |
983 | set_idt(7, 0); | |
984 | set_idt(8, 0); | |
985 | set_idt(9, 0); | |
986 | set_idt(10, 0); | |
987 | set_idt(11, 0); | |
988 | set_idt(12, 0); | |
989 | set_idt(13, 0); | |
990 | set_idt(14, 0); | |
991 | set_idt(15, 0); | |
992 | set_idt(16, 0); | |
993 | set_idt(17, 0); | |
994 | set_idt(18, 0); | |
995 | set_idt(19, 0); | |
996 | /* Syscalls are done via | |
997 | int 0x80 (unix) (rarely used) | |
998 | int 0x81 (mach) | |
999 | int 0x82 (thread) | |
1000 | int 0x83 (diag) (not handled here) | |
1001 | sysenter/sysexit (unix) -> we redirect that to int 0x90 */ | |
1002 | set_idt(0x79, 3); /* Commpage hack, here is our backdoor interrupt */ | |
1003 | set_idt(0x80, 3); /* Unix Syscall */ | |
1004 | set_idt(0x81, 3); /* Mach Syscalls */ | |
1005 | set_idt(0x82, 3); /* thread Syscalls */ | |
1006 | ||
1e2bed4f | 1007 | set_idt(0x90, 3); /* qemu-darwin-user's Unix syscalls backdoor */ |
831b7825 TS |
1008 | |
1009 | ||
1010 | cpu_x86_load_seg(env, R_CS, __USER_CS); | |
1011 | cpu_x86_load_seg(env, R_DS, __USER_DS); | |
1012 | cpu_x86_load_seg(env, R_ES, __USER_DS); | |
1013 | cpu_x86_load_seg(env, R_SS, __USER_DS); | |
1014 | cpu_x86_load_seg(env, R_FS, __USER_DS); | |
1015 | cpu_x86_load_seg(env, R_GS, __USER_DS); | |
1016 | ||
1017 | #elif defined(TARGET_PPC) | |
1018 | { | |
1019 | int i; | |
31fca6ab JM |
1020 | |
1021 | #if defined(TARGET_PPC64) | |
1022 | #if defined(TARGET_ABI32) | |
1023 | env->msr &= ~((target_ulong)1 << MSR_SF); | |
1024 | #else | |
1025 | env->msr |= (target_ulong)1 << MSR_SF; | |
1026 | #endif | |
1027 | #endif | |
831b7825 TS |
1028 | env->nip = regs->nip; |
1029 | for(i = 0; i < 32; i++) { | |
1030 | env->gpr[i] = regs->gpr[i]; | |
1031 | } | |
1032 | } | |
1033 | #else | |
1034 | #error unsupported target CPU | |
1035 | #endif | |
1036 | ||
1037 | if (use_gdbstub) { | |
1038 | printf("Waiting for gdb Connection on port 1234...\n"); | |
1039 | gdbserver_start (1234); | |
1040 | gdb_handlesig(env, 0); | |
1041 | } | |
1042 | ||
1043 | cpu_loop(env); | |
1044 | /* never exits */ | |
1045 | return 0; | |
1046 | } |