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831b7825 TS |
1 | /* |
2 | * qemu user main | |
3 | * | |
4 | * Copyright (c) 2003 Fabrice Bellard | |
5 | * Copyright (c) 2006 Pierre d'Herbemont | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
20 | */ | |
21 | #include <stdlib.h> | |
22 | #include <stdio.h> | |
23 | #include <stdarg.h> | |
24 | #include <string.h> | |
25 | #include <errno.h> | |
26 | #include <unistd.h> | |
27 | ||
28 | #include <sys/syscall.h> | |
29 | #include <sys/mman.h> | |
30 | ||
31 | #include "qemu.h" | |
32 | ||
33 | #define DEBUG_LOGFILE "/tmp/qemu.log" | |
34 | ||
35 | #ifdef __APPLE__ | |
36 | #include <crt_externs.h> | |
37 | # define environ (*_NSGetEnviron()) | |
38 | #endif | |
39 | ||
40 | #include <mach/mach_init.h> | |
41 | #include <mach/vm_map.h> | |
42 | ||
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 | ||
a062e36c | 127 | uint32_t cpu_ppc_load_atbl (CPUState *env) |
831b7825 | 128 | { |
a062e36c | 129 | return cpu_ppc_get_tb(env) & 0xFFFFFFFF; |
831b7825 TS |
130 | } |
131 | ||
a062e36c | 132 | uint32_t cpu_ppc_load_atbu (CPUState *env) |
c0009975 | 133 | { |
a062e36c | 134 | return cpu_ppc_get_tb(env) >> 32; |
c0009975 TS |
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 | ||
e1833e1f JM |
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 | ||
831b7825 TS |
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); | |
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; | |
e1833e1f JM |
389 | case POWERPC_EXCP_DSEG: /* Data segment exception */ |
390 | cpu_abort(env, "Data segment exception while in user mode. " | |
391 | "Aborting\n"); | |
392 | break; | |
393 | case POWERPC_EXCP_ISEG: /* Instruction segment exception */ | |
394 | cpu_abort(env, "Instruction segment exception " | |
395 | "while in user mode. Aborting\n"); | |
396 | break; | |
e1833e1f JM |
397 | case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */ |
398 | cpu_abort(env, "Hypervisor decrementer interrupt " | |
399 | "while in user mode. Aborting\n"); | |
400 | break; | |
e1833e1f JM |
401 | case POWERPC_EXCP_TRACE: /* Trace exception */ |
402 | /* Nothing to do: | |
403 | * we use this exception to emulate step-by-step execution mode. | |
404 | */ | |
405 | break; | |
e1833e1f JM |
406 | case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */ |
407 | cpu_abort(env, "Hypervisor data storage exception " | |
408 | "while in user mode. Aborting\n"); | |
409 | break; | |
410 | case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */ | |
411 | cpu_abort(env, "Hypervisor instruction storage exception " | |
412 | "while in user mode. Aborting\n"); | |
413 | break; | |
414 | case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */ | |
415 | cpu_abort(env, "Hypervisor data segment exception " | |
416 | "while in user mode. Aborting\n"); | |
417 | break; | |
418 | case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */ | |
419 | cpu_abort(env, "Hypervisor instruction segment exception " | |
420 | "while in user mode. Aborting\n"); | |
421 | break; | |
e1833e1f JM |
422 | case POWERPC_EXCP_VPU: /* Vector unavailable exception */ |
423 | EXCP_DUMP(env, "No Altivec instructions allowed\n"); | |
424 | info.si_signo = SIGILL; | |
425 | info.si_errno = 0; | |
426 | info.si_code = ILL_COPROC; | |
427 | info.si_addr = (void*)(env->nip - 4); | |
428 | queue_signal(info.si_signo, &info); | |
429 | break; | |
430 | case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */ | |
431 | cpu_abort(env, "Programable interval timer interrupt " | |
432 | "while in user mode. Aborting\n"); | |
433 | break; | |
434 | case POWERPC_EXCP_IO: /* IO error exception */ | |
435 | cpu_abort(env, "IO error exception while in user mode. " | |
436 | "Aborting\n"); | |
437 | break; | |
438 | case POWERPC_EXCP_RUNM: /* Run mode exception */ | |
439 | cpu_abort(env, "Run mode exception while in user mode. " | |
440 | "Aborting\n"); | |
441 | break; | |
442 | case POWERPC_EXCP_EMUL: /* Emulation trap exception */ | |
443 | cpu_abort(env, "Emulation trap exception not handled\n"); | |
444 | break; | |
445 | case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */ | |
446 | cpu_abort(env, "Instruction fetch TLB exception " | |
447 | "while in user-mode. Aborting"); | |
448 | break; | |
449 | case POWERPC_EXCP_DLTLB: /* Data load TLB miss */ | |
450 | cpu_abort(env, "Data load TLB exception while in user-mode. " | |
451 | "Aborting"); | |
452 | break; | |
453 | case POWERPC_EXCP_DSTLB: /* Data store TLB miss */ | |
454 | cpu_abort(env, "Data store TLB exception while in user-mode. " | |
455 | "Aborting"); | |
456 | break; | |
457 | case POWERPC_EXCP_FPA: /* Floating-point assist exception */ | |
458 | cpu_abort(env, "Floating-point assist exception not handled\n"); | |
459 | break; | |
460 | case POWERPC_EXCP_IABR: /* Instruction address breakpoint */ | |
461 | cpu_abort(env, "Instruction address breakpoint exception " | |
462 | "not handled\n"); | |
463 | break; | |
464 | case POWERPC_EXCP_SMI: /* System management interrupt */ | |
465 | cpu_abort(env, "System management interrupt while in user mode. " | |
466 | "Aborting\n"); | |
467 | break; | |
468 | case POWERPC_EXCP_THERM: /* Thermal interrupt */ | |
469 | cpu_abort(env, "Thermal interrupt interrupt while in user mode. " | |
470 | "Aborting\n"); | |
471 | break; | |
472 | case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */ | |
473 | cpu_abort(env, "Performance monitor exception not handled\n"); | |
474 | break; | |
475 | case POWERPC_EXCP_VPUA: /* Vector assist exception */ | |
476 | cpu_abort(env, "Vector assist exception not handled\n"); | |
477 | break; | |
478 | case POWERPC_EXCP_SOFTP: /* Soft patch exception */ | |
479 | cpu_abort(env, "Soft patch exception not handled\n"); | |
480 | break; | |
481 | case POWERPC_EXCP_MAINT: /* Maintenance exception */ | |
482 | cpu_abort(env, "Maintenance exception while in user mode. " | |
483 | "Aborting\n"); | |
484 | break; | |
485 | case POWERPC_EXCP_STOP: /* stop translation */ | |
486 | /* We did invalidate the instruction cache. Go on */ | |
487 | break; | |
488 | case POWERPC_EXCP_BRANCH: /* branch instruction: */ | |
489 | /* We just stopped because of a branch. Go on */ | |
490 | break; | |
491 | case POWERPC_EXCP_SYSCALL_USER: | |
492 | /* system call in user-mode emulation */ | |
493 | /* system call */ | |
494 | if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0) | |
495 | ret = do_unix_syscall(env, env->gpr[0]/*, env->gpr[3], env->gpr[4], | |
496 | env->gpr[5], env->gpr[6], env->gpr[7], | |
497 | env->gpr[8], env->gpr[9], env->gpr[10]*/); | |
498 | else if(((int)env->gpr[0])<0) | |
499 | ret = do_mach_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], | |
500 | env->gpr[5], env->gpr[6], env->gpr[7], | |
501 | env->gpr[8], env->gpr[9], env->gpr[10]); | |
502 | else | |
503 | ret = do_thread_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], | |
504 | env->gpr[5], env->gpr[6], env->gpr[7], | |
505 | env->gpr[8], env->gpr[9], env->gpr[10]); | |
506 | ||
507 | /* Unix syscall error signaling */ | |
508 | if(((int)env->gpr[0]) <= SYS_MAXSYSCALL && ((int)env->gpr[0])>0) | |
509 | { | |
510 | if( (int)ret < 0 ) | |
511 | env->nip += 0; | |
512 | else | |
513 | env->nip += 4; | |
831b7825 | 514 | } |
e1833e1f JM |
515 | |
516 | /* Return value */ | |
517 | env->gpr[3] = ret; | |
518 | break; | |
56ba31ff JM |
519 | case EXCP_INTERRUPT: |
520 | /* just indicate that signals should be handled asap */ | |
521 | break; | |
e1833e1f JM |
522 | default: |
523 | cpu_abort(env, "Unknown exception 0x%d. Aborting\n", trapnr); | |
524 | break; | |
831b7825 TS |
525 | } |
526 | process_pending_signals(env); | |
527 | } | |
528 | } | |
529 | #endif | |
530 | ||
531 | ||
532 | #ifdef TARGET_I386 | |
533 | ||
534 | /***********************************************************/ | |
535 | /* CPUX86 core interface */ | |
536 | ||
537 | uint64_t cpu_get_tsc(CPUX86State *env) | |
538 | { | |
539 | return cpu_get_real_ticks(); | |
540 | } | |
541 | ||
542 | void | |
543 | write_dt(void *ptr, unsigned long addr, unsigned long limit, | |
544 | int flags) | |
545 | { | |
546 | unsigned int e1, e2; | |
547 | e1 = (addr << 16) | (limit & 0xffff); | |
548 | e2 = ((addr >> 16) & 0xff) | (addr & 0xff000000) | (limit & 0x000f0000); | |
549 | e2 |= flags; | |
550 | stl((uint8_t *)ptr, e1); | |
551 | stl((uint8_t *)ptr + 4, e2); | |
552 | } | |
553 | ||
554 | static void set_gate(void *ptr, unsigned int type, unsigned int dpl, | |
555 | unsigned long addr, unsigned int sel) | |
556 | { | |
557 | unsigned int e1, e2; | |
558 | e1 = (addr & 0xffff) | (sel << 16); | |
559 | e2 = (addr & 0xffff0000) | 0x8000 | (dpl << 13) | (type << 8); | |
560 | stl((uint8_t *)ptr, e1); | |
561 | stl((uint8_t *)ptr + 4, e2); | |
562 | } | |
563 | ||
564 | #define GDT_TABLE_SIZE 14 | |
565 | #define LDT_TABLE_SIZE 15 | |
566 | #define IDT_TABLE_SIZE 256 | |
567 | #define TSS_SIZE 104 | |
568 | uint64_t gdt_table[GDT_TABLE_SIZE]; | |
569 | uint64_t ldt_table[LDT_TABLE_SIZE]; | |
570 | uint64_t idt_table[IDT_TABLE_SIZE]; | |
571 | uint32_t tss[TSS_SIZE]; | |
572 | ||
573 | /* only dpl matters as we do only user space emulation */ | |
574 | static void set_idt(int n, unsigned int dpl) | |
575 | { | |
576 | set_gate(idt_table + n, 0, dpl, 0, 0); | |
577 | } | |
578 | ||
579 | /* ABI convention: after a syscall if there was an error the CF flag is set */ | |
46ea3397 | 580 | static inline void set_error(CPUX86State *env, int ret) |
831b7825 TS |
581 | { |
582 | if(ret<0) | |
583 | env->eflags = env->eflags | 0x1; | |
584 | else | |
585 | env->eflags &= ~0x1; | |
586 | env->regs[R_EAX] = ret; | |
587 | } | |
588 | ||
589 | void cpu_loop(CPUX86State *env) | |
590 | { | |
591 | int trapnr; | |
592 | int ret; | |
593 | uint8_t *pc; | |
594 | target_siginfo_t info; | |
595 | ||
596 | for(;;) { | |
597 | trapnr = cpu_x86_exec(env); | |
598 | uint32_t *params = (uint32_t *)env->regs[R_ESP]; | |
599 | switch(trapnr) { | |
600 | case 0x79: /* Our commpage hack back door exit is here */ | |
601 | do_commpage(env, env->eip, *(params + 1), *(params + 2), | |
602 | *(params + 3), *(params + 4), | |
603 | *(params + 5), *(params + 6), | |
604 | *(params + 7), *(params + 8)); | |
605 | break; | |
606 | case 0x81: /* mach syscall */ | |
607 | { | |
608 | ret = do_mach_syscall(env, env->regs[R_EAX], | |
609 | *(params + 1), *(params + 2), | |
610 | *(params + 3), *(params + 4), | |
611 | *(params + 5), *(params + 6), | |
612 | *(params + 7), *(params + 8)); | |
613 | set_error(env, ret); | |
614 | break; | |
615 | } | |
616 | case 0x90: /* unix backdoor */ | |
617 | { | |
618 | /* after sysenter, stack is in R_ECX, new eip in R_EDX (sysexit will flip them back)*/ | |
619 | int saved_stack = env->regs[R_ESP]; | |
620 | env->regs[R_ESP] = env->regs[R_ECX]; | |
621 | ||
622 | ret = do_unix_syscall(env, env->regs[R_EAX]); | |
623 | ||
624 | env->regs[R_ECX] = env->regs[R_ESP]; | |
625 | env->regs[R_ESP] = saved_stack; | |
626 | ||
627 | set_error(env, ret); | |
628 | break; | |
629 | } | |
630 | case 0x80: /* unix syscall */ | |
631 | { | |
632 | ret = do_unix_syscall(env, env->regs[R_EAX]/*, | |
633 | *(params + 1), *(params + 2), | |
634 | *(params + 3), *(params + 4), | |
635 | *(params + 5), *(params + 6), | |
636 | *(params + 7), *(params + 8)*/); | |
637 | set_error(env, ret); | |
638 | break; | |
639 | } | |
640 | case 0x82: /* thread syscall */ | |
641 | { | |
642 | ret = do_thread_syscall(env, env->regs[R_EAX], | |
643 | *(params + 1), *(params + 2), | |
644 | *(params + 3), *(params + 4), | |
645 | *(params + 5), *(params + 6), | |
646 | *(params + 7), *(params + 8)); | |
647 | set_error(env, ret); | |
648 | break; | |
649 | } | |
650 | case EXCP0B_NOSEG: | |
651 | case EXCP0C_STACK: | |
652 | info.si_signo = SIGBUS; | |
653 | info.si_errno = 0; | |
654 | info.si_code = BUS_NOOP; | |
655 | info.si_addr = 0; | |
656 | gdb_handlesig (env, SIGBUS); | |
657 | queue_signal(info.si_signo, &info); | |
658 | break; | |
659 | case EXCP0D_GPF: | |
660 | info.si_signo = SIGSEGV; | |
661 | info.si_errno = 0; | |
662 | info.si_code = SEGV_NOOP; | |
663 | info.si_addr = 0; | |
664 | gdb_handlesig (env, SIGSEGV); | |
665 | queue_signal(info.si_signo, &info); | |
666 | break; | |
667 | case EXCP0E_PAGE: | |
668 | info.si_signo = SIGSEGV; | |
669 | info.si_errno = 0; | |
670 | if (!(env->error_code & 1)) | |
671 | info.si_code = SEGV_MAPERR; | |
672 | else | |
673 | info.si_code = SEGV_ACCERR; | |
674 | info.si_addr = (void*)env->cr[2]; | |
675 | gdb_handlesig (env, SIGSEGV); | |
676 | queue_signal(info.si_signo, &info); | |
677 | break; | |
678 | case EXCP00_DIVZ: | |
679 | /* division by zero */ | |
680 | info.si_signo = SIGFPE; | |
681 | info.si_errno = 0; | |
682 | info.si_code = FPE_INTDIV; | |
683 | info.si_addr = (void*)env->eip; | |
684 | gdb_handlesig (env, SIGFPE); | |
685 | queue_signal(info.si_signo, &info); | |
686 | break; | |
687 | case EXCP01_SSTP: | |
688 | case EXCP03_INT3: | |
689 | info.si_signo = SIGTRAP; | |
690 | info.si_errno = 0; | |
691 | info.si_code = TRAP_BRKPT; | |
692 | info.si_addr = (void*)env->eip; | |
693 | gdb_handlesig (env, SIGTRAP); | |
694 | queue_signal(info.si_signo, &info); | |
695 | break; | |
696 | case EXCP04_INTO: | |
697 | case EXCP05_BOUND: | |
698 | info.si_signo = SIGSEGV; | |
699 | info.si_errno = 0; | |
700 | info.si_code = SEGV_NOOP; | |
701 | info.si_addr = 0; | |
702 | gdb_handlesig (env, SIGSEGV); | |
703 | queue_signal(info.si_signo, &info); | |
704 | break; | |
705 | case EXCP06_ILLOP: | |
706 | info.si_signo = SIGILL; | |
707 | info.si_errno = 0; | |
708 | info.si_code = ILL_ILLOPN; | |
709 | info.si_addr = (void*)env->eip; | |
710 | gdb_handlesig (env, SIGILL); | |
711 | queue_signal(info.si_signo, &info); | |
712 | break; | |
713 | case EXCP_INTERRUPT: | |
714 | /* just indicate that signals should be handled asap */ | |
715 | break; | |
716 | case EXCP_DEBUG: | |
717 | { | |
718 | int sig; | |
719 | ||
720 | sig = gdb_handlesig (env, SIGTRAP); | |
721 | if (sig) | |
722 | { | |
723 | info.si_signo = sig; | |
724 | info.si_errno = 0; | |
725 | info.si_code = TRAP_BRKPT; | |
726 | queue_signal(info.si_signo, &info); | |
727 | } | |
728 | } | |
729 | break; | |
730 | default: | |
731 | pc = (void*)(env->segs[R_CS].base + env->eip); | |
732 | fprintf(stderr, "qemu: 0x%08lx: unhandled CPU exception 0x%x - aborting\n", | |
733 | (long)pc, trapnr); | |
734 | abort(); | |
735 | } | |
736 | process_pending_signals(env); | |
737 | } | |
738 | } | |
739 | #endif | |
740 | ||
741 | void usage(void) | |
742 | { | |
743 | printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n" | |
744 | "usage: qemu-" TARGET_ARCH " [-h] [-d opts] [-L path] [-s size] program [arguments...]\n" | |
745 | "Darwin CPU emulator (compiled for %s emulation)\n" | |
746 | "\n" | |
747 | "-h print this help\n" | |
1e2bed4f | 748 | "-L path set the %s library path (default='%s')\n" |
831b7825 TS |
749 | "-s size set the stack size in bytes (default=%ld)\n" |
750 | "\n" | |
751 | "debug options:\n" | |
1e2bed4f | 752 | "-d options activate log (logfile='%s')\n" |
831b7825 TS |
753 | "-g wait for gdb on port 1234\n" |
754 | "-p pagesize set the host page size to 'pagesize'\n", | |
755 | TARGET_ARCH, | |
1e2bed4f | 756 | TARGET_ARCH, |
831b7825 TS |
757 | interp_prefix, |
758 | stack_size, | |
759 | DEBUG_LOGFILE); | |
760 | _exit(1); | |
761 | } | |
762 | ||
763 | /* XXX: currently only used for async signals (see signal.c) */ | |
764 | CPUState *global_env; | |
765 | /* used only if single thread */ | |
766 | CPUState *cpu_single_env = NULL; | |
767 | ||
768 | /* used to free thread contexts */ | |
769 | TaskState *first_task_state; | |
770 | ||
771 | int main(int argc, char **argv) | |
772 | { | |
773 | const char *filename; | |
774 | struct target_pt_regs regs1, *regs = ®s1; | |
775 | TaskState ts1, *ts = &ts1; | |
776 | CPUState *env; | |
777 | int optind; | |
778 | short use_gdbstub = 0; | |
779 | const char *r; | |
aaed909a | 780 | const char *cpu_model; |
831b7825 TS |
781 | |
782 | if (argc <= 1) | |
783 | usage(); | |
784 | ||
785 | /* init debug */ | |
786 | cpu_set_log_filename(DEBUG_LOGFILE); | |
787 | ||
788 | optind = 1; | |
789 | for(;;) { | |
790 | if (optind >= argc) | |
791 | break; | |
792 | r = argv[optind]; | |
793 | if (r[0] != '-') | |
794 | break; | |
795 | optind++; | |
796 | r++; | |
797 | if (!strcmp(r, "-")) { | |
798 | break; | |
799 | } else if (!strcmp(r, "d")) { | |
800 | int mask; | |
801 | CPULogItem *item; | |
802 | ||
803 | if (optind >= argc) | |
804 | break; | |
805 | ||
806 | r = argv[optind++]; | |
807 | mask = cpu_str_to_log_mask(r); | |
808 | if (!mask) { | |
809 | printf("Log items (comma separated):\n"); | |
810 | for(item = cpu_log_items; item->mask != 0; item++) { | |
811 | printf("%-10s %s\n", item->name, item->help); | |
812 | } | |
813 | exit(1); | |
814 | } | |
815 | cpu_set_log(mask); | |
816 | } else if (!strcmp(r, "s")) { | |
817 | r = argv[optind++]; | |
818 | stack_size = strtol(r, (char **)&r, 0); | |
819 | if (stack_size <= 0) | |
820 | usage(); | |
821 | if (*r == 'M') | |
822 | stack_size *= 1024 * 1024; | |
823 | else if (*r == 'k' || *r == 'K') | |
824 | stack_size *= 1024; | |
825 | } else if (!strcmp(r, "L")) { | |
826 | interp_prefix = argv[optind++]; | |
827 | } else if (!strcmp(r, "p")) { | |
828 | qemu_host_page_size = atoi(argv[optind++]); | |
829 | if (qemu_host_page_size == 0 || | |
830 | (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { | |
831 | fprintf(stderr, "page size must be a power of two\n"); | |
832 | exit(1); | |
833 | } | |
834 | } else | |
835 | if (!strcmp(r, "g")) { | |
836 | use_gdbstub = 1; | |
31fca6ab JM |
837 | } else if (!strcmp(r, "cpu")) { |
838 | cpu_model = argv[optind++]; | |
839 | if (strcmp(cpu_model, "?") == 0) { | |
840 | /* XXX: implement xxx_cpu_list for targets that still miss it */ | |
841 | #if defined(cpu_list) | |
842 | cpu_list(stdout, &fprintf); | |
843 | #endif | |
844 | _exit(1); | |
845 | } | |
831b7825 | 846 | } else |
831b7825 TS |
847 | { |
848 | usage(); | |
849 | } | |
850 | } | |
851 | if (optind >= argc) | |
852 | usage(); | |
853 | filename = argv[optind]; | |
854 | ||
855 | /* Zero out regs */ | |
856 | memset(regs, 0, sizeof(struct target_pt_regs)); | |
857 | ||
31fca6ab | 858 | if (cpu_model == NULL) { |
aaed909a | 859 | #if defined(TARGET_I386) |
31fca6ab JM |
860 | #ifdef TARGET_X86_64 |
861 | cpu_model = "qemu64"; | |
862 | #else | |
863 | cpu_model = "qemu32"; | |
864 | #endif | |
aaed909a | 865 | #elif defined(TARGET_PPC) |
31fca6ab JM |
866 | #ifdef TARGET_PPC64 |
867 | cpu_model = "970"; | |
868 | #else | |
869 | cpu_model = "750"; | |
870 | #endif | |
aaed909a FB |
871 | #else |
872 | #error unsupported CPU | |
873 | #endif | |
31fca6ab | 874 | } |
aaed909a | 875 | |
31fca6ab JM |
876 | /* NOTE: we need to init the CPU at this stage to get |
877 | qemu_host_page_size */ | |
aaed909a | 878 | env = cpu_init(cpu_model); |
831b7825 TS |
879 | |
880 | printf("Starting %s with qemu\n----------------\n", filename); | |
881 | ||
882 | commpage_init(); | |
883 | ||
884 | if (mach_exec(filename, argv+optind, environ, regs) != 0) { | |
885 | printf("Error loading %s\n", filename); | |
886 | _exit(1); | |
887 | } | |
888 | ||
889 | syscall_init(); | |
890 | signal_init(); | |
891 | global_env = env; | |
892 | ||
893 | /* build Task State */ | |
894 | memset(ts, 0, sizeof(TaskState)); | |
895 | env->opaque = ts; | |
896 | ts->used = 1; | |
897 | env->user_mode_only = 1; | |
898 | ||
899 | #if defined(TARGET_I386) | |
900 | cpu_x86_set_cpl(env, 3); | |
901 | ||
902 | env->cr[0] = CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK; | |
903 | env->hflags |= HF_PE_MASK; | |
904 | ||
905 | if (env->cpuid_features & CPUID_SSE) { | |
906 | env->cr[4] |= CR4_OSFXSR_MASK; | |
907 | env->hflags |= HF_OSFXSR_MASK; | |
908 | } | |
909 | ||
910 | /* flags setup : we activate the IRQs by default as in user mode */ | |
911 | env->eflags |= IF_MASK; | |
912 | ||
913 | /* darwin register setup */ | |
914 | env->regs[R_EAX] = regs->eax; | |
915 | env->regs[R_EBX] = regs->ebx; | |
916 | env->regs[R_ECX] = regs->ecx; | |
917 | env->regs[R_EDX] = regs->edx; | |
918 | env->regs[R_ESI] = regs->esi; | |
919 | env->regs[R_EDI] = regs->edi; | |
920 | env->regs[R_EBP] = regs->ebp; | |
921 | env->regs[R_ESP] = regs->esp; | |
922 | env->eip = regs->eip; | |
923 | ||
924 | /* Darwin LDT setup */ | |
925 | /* 2 - User code segment | |
926 | 3 - User data segment | |
927 | 4 - User cthread */ | |
928 | bzero(ldt_table, LDT_TABLE_SIZE * sizeof(ldt_table[0])); | |
929 | env->ldt.base = (uint32_t) ldt_table; | |
930 | env->ldt.limit = sizeof(ldt_table) - 1; | |
931 | ||
932 | write_dt(ldt_table + 2, 0, 0xfffff, | |
933 | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | | |
934 | (3 << DESC_DPL_SHIFT) | (0xa << DESC_TYPE_SHIFT)); | |
935 | write_dt(ldt_table + 3, 0, 0xfffff, | |
936 | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | | |
937 | (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); | |
938 | write_dt(ldt_table + 4, 0, 0xfffff, | |
939 | DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | DESC_S_MASK | | |
940 | (3 << DESC_DPL_SHIFT) | (0x2 << DESC_TYPE_SHIFT)); | |
941 | ||
942 | /* Darwin GDT setup. | |
943 | * has changed a lot between old Darwin/x86 (pre-Mac Intel) and Mac OS X/x86, | |
944 | now everything is done via int 0x81(mach) int 0x82 (thread) and sysenter/sysexit(unix) */ | |
945 | bzero(gdt_table, sizeof(gdt_table)); | |
946 | env->gdt.base = (uint32_t)gdt_table; | |
947 | env->gdt.limit = sizeof(gdt_table) - 1; | |
948 | ||
949 | /* Set up a back door to handle sysenter syscalls (unix) */ | |
950 | char * syscallbackdoor = malloc(64); | |
951 | page_set_flags((int)syscallbackdoor, (int)syscallbackdoor + 64, PROT_EXEC | PROT_READ | PAGE_VALID); | |
952 | ||
953 | int i = 0; | |
954 | syscallbackdoor[i++] = 0xcd; | |
955 | syscallbackdoor[i++] = 0x90; /* int 0x90 */ | |
956 | syscallbackdoor[i++] = 0x0F; | |
957 | syscallbackdoor[i++] = 0x35; /* sysexit */ | |
958 | ||
959 | /* Darwin sysenter/sysexit setup */ | |
960 | env->sysenter_cs = 0x1; //XXX | |
961 | env->sysenter_eip = (int)syscallbackdoor; | |
962 | env->sysenter_esp = (int)malloc(64); | |
963 | ||
964 | /* Darwin TSS setup | |
965 | This must match up with GDT[4] */ | |
966 | env->tr.base = (uint32_t) tss; | |
967 | env->tr.limit = sizeof(tss) - 1; | |
968 | env->tr.flags = DESC_P_MASK | (0x9 << DESC_TYPE_SHIFT); | |
969 | stw(tss + 2, 0x10); // ss0 = 0x10 = GDT[2] = Kernel Data Segment | |
970 | ||
971 | /* Darwin interrupt setup */ | |
972 | bzero(idt_table, sizeof(idt_table)); | |
973 | env->idt.base = (uint32_t) idt_table; | |
974 | env->idt.limit = sizeof(idt_table) - 1; | |
975 | set_idt(0, 0); | |
976 | set_idt(1, 0); | |
977 | set_idt(2, 0); | |
978 | set_idt(3, 3); | |
979 | set_idt(4, 3); | |
980 | set_idt(5, 3); | |
981 | set_idt(6, 0); | |
982 | set_idt(7, 0); | |
983 | set_idt(8, 0); | |
984 | set_idt(9, 0); | |
985 | set_idt(10, 0); | |
986 | set_idt(11, 0); | |
987 | set_idt(12, 0); | |
988 | set_idt(13, 0); | |
989 | set_idt(14, 0); | |
990 | set_idt(15, 0); | |
991 | set_idt(16, 0); | |
992 | set_idt(17, 0); | |
993 | set_idt(18, 0); | |
994 | set_idt(19, 0); | |
995 | /* Syscalls are done via | |
996 | int 0x80 (unix) (rarely used) | |
997 | int 0x81 (mach) | |
998 | int 0x82 (thread) | |
999 | int 0x83 (diag) (not handled here) | |
1000 | sysenter/sysexit (unix) -> we redirect that to int 0x90 */ | |
1001 | set_idt(0x79, 3); /* Commpage hack, here is our backdoor interrupt */ | |
1002 | set_idt(0x80, 3); /* Unix Syscall */ | |
1003 | set_idt(0x81, 3); /* Mach Syscalls */ | |
1004 | set_idt(0x82, 3); /* thread Syscalls */ | |
1005 | ||
1e2bed4f | 1006 | set_idt(0x90, 3); /* qemu-darwin-user's Unix syscalls backdoor */ |
831b7825 TS |
1007 | |
1008 | ||
1009 | cpu_x86_load_seg(env, R_CS, __USER_CS); | |
1010 | cpu_x86_load_seg(env, R_DS, __USER_DS); | |
1011 | cpu_x86_load_seg(env, R_ES, __USER_DS); | |
1012 | cpu_x86_load_seg(env, R_SS, __USER_DS); | |
1013 | cpu_x86_load_seg(env, R_FS, __USER_DS); | |
1014 | cpu_x86_load_seg(env, R_GS, __USER_DS); | |
1015 | ||
1016 | #elif defined(TARGET_PPC) | |
1017 | { | |
1018 | int i; | |
31fca6ab JM |
1019 | |
1020 | #if defined(TARGET_PPC64) | |
1021 | #if defined(TARGET_ABI32) | |
1022 | env->msr &= ~((target_ulong)1 << MSR_SF); | |
1023 | #else | |
1024 | env->msr |= (target_ulong)1 << MSR_SF; | |
1025 | #endif | |
1026 | #endif | |
831b7825 TS |
1027 | env->nip = regs->nip; |
1028 | for(i = 0; i < 32; i++) { | |
1029 | env->gpr[i] = regs->gpr[i]; | |
1030 | } | |
1031 | } | |
1032 | #else | |
1033 | #error unsupported target CPU | |
1034 | #endif | |
1035 | ||
1036 | if (use_gdbstub) { | |
1037 | printf("Waiting for gdb Connection on port 1234...\n"); | |
1038 | gdbserver_start (1234); | |
1039 | gdb_handlesig(env, 0); | |
1040 | } | |
1041 | ||
1042 | cpu_loop(env); | |
1043 | /* never exits */ | |
1044 | return 0; | |
1045 | } |