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b4608c04 FB |
1 | /* |
2 | * gdb server stub | |
3 | * | |
3475187d | 4 | * Copyright (c) 2003-2005 Fabrice Bellard |
b4608c04 FB |
5 | * |
6 | * This library is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2 of the License, or (at your option) any later version. | |
10 | * | |
11 | * This library is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
17 | * License along with this library; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | */ | |
1fddef4b FB |
20 | #ifdef CONFIG_USER_ONLY |
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 "qemu.h" | |
29 | #else | |
67b915a5 | 30 | #include "vl.h" |
1fddef4b | 31 | #endif |
67b915a5 | 32 | |
8f447cc7 FB |
33 | #include "qemu_socket.h" |
34 | #ifdef _WIN32 | |
35 | /* XXX: these constants may be independent of the host ones even for Unix */ | |
36 | #ifndef SIGTRAP | |
37 | #define SIGTRAP 5 | |
38 | #endif | |
39 | #ifndef SIGINT | |
40 | #define SIGINT 2 | |
41 | #endif | |
42 | #else | |
b4608c04 | 43 | #include <signal.h> |
8f447cc7 | 44 | #endif |
b4608c04 | 45 | |
4abe615b | 46 | //#define DEBUG_GDB |
b4608c04 | 47 | |
858693c6 FB |
48 | enum RSState { |
49 | RS_IDLE, | |
50 | RS_GETLINE, | |
51 | RS_CHKSUM1, | |
52 | RS_CHKSUM2, | |
53 | }; | |
1fddef4b FB |
54 | /* XXX: This is not thread safe. Do we care? */ |
55 | static int gdbserver_fd = -1; | |
b4608c04 | 56 | |
858693c6 | 57 | typedef struct GDBState { |
6a00d601 | 58 | CPUState *env; /* current CPU */ |
41625033 | 59 | enum RSState state; /* parsing state */ |
858693c6 FB |
60 | int fd; |
61 | char line_buf[4096]; | |
62 | int line_buf_index; | |
63 | int line_csum; | |
41625033 FB |
64 | #ifdef CONFIG_USER_ONLY |
65 | int running_state; | |
66 | #endif | |
858693c6 | 67 | } GDBState; |
b4608c04 | 68 | |
1fddef4b FB |
69 | #ifdef CONFIG_USER_ONLY |
70 | /* XXX: remove this hack. */ | |
71 | static GDBState gdbserver_state; | |
72 | #endif | |
73 | ||
858693c6 | 74 | static int get_char(GDBState *s) |
b4608c04 FB |
75 | { |
76 | uint8_t ch; | |
77 | int ret; | |
78 | ||
79 | for(;;) { | |
8f447cc7 | 80 | ret = recv(s->fd, &ch, 1, 0); |
b4608c04 FB |
81 | if (ret < 0) { |
82 | if (errno != EINTR && errno != EAGAIN) | |
83 | return -1; | |
84 | } else if (ret == 0) { | |
85 | return -1; | |
86 | } else { | |
87 | break; | |
88 | } | |
89 | } | |
90 | return ch; | |
91 | } | |
92 | ||
858693c6 | 93 | static void put_buffer(GDBState *s, const uint8_t *buf, int len) |
b4608c04 FB |
94 | { |
95 | int ret; | |
96 | ||
97 | while (len > 0) { | |
8f447cc7 | 98 | ret = send(s->fd, buf, len, 0); |
b4608c04 FB |
99 | if (ret < 0) { |
100 | if (errno != EINTR && errno != EAGAIN) | |
101 | return; | |
102 | } else { | |
103 | buf += ret; | |
104 | len -= ret; | |
105 | } | |
106 | } | |
107 | } | |
108 | ||
109 | static inline int fromhex(int v) | |
110 | { | |
111 | if (v >= '0' && v <= '9') | |
112 | return v - '0'; | |
113 | else if (v >= 'A' && v <= 'F') | |
114 | return v - 'A' + 10; | |
115 | else if (v >= 'a' && v <= 'f') | |
116 | return v - 'a' + 10; | |
117 | else | |
118 | return 0; | |
119 | } | |
120 | ||
121 | static inline int tohex(int v) | |
122 | { | |
123 | if (v < 10) | |
124 | return v + '0'; | |
125 | else | |
126 | return v - 10 + 'a'; | |
127 | } | |
128 | ||
129 | static void memtohex(char *buf, const uint8_t *mem, int len) | |
130 | { | |
131 | int i, c; | |
132 | char *q; | |
133 | q = buf; | |
134 | for(i = 0; i < len; i++) { | |
135 | c = mem[i]; | |
136 | *q++ = tohex(c >> 4); | |
137 | *q++ = tohex(c & 0xf); | |
138 | } | |
139 | *q = '\0'; | |
140 | } | |
141 | ||
142 | static void hextomem(uint8_t *mem, const char *buf, int len) | |
143 | { | |
144 | int i; | |
145 | ||
146 | for(i = 0; i < len; i++) { | |
147 | mem[i] = (fromhex(buf[0]) << 4) | fromhex(buf[1]); | |
148 | buf += 2; | |
149 | } | |
150 | } | |
151 | ||
b4608c04 | 152 | /* return -1 if error, 0 if OK */ |
858693c6 | 153 | static int put_packet(GDBState *s, char *buf) |
b4608c04 FB |
154 | { |
155 | char buf1[3]; | |
156 | int len, csum, ch, i; | |
157 | ||
158 | #ifdef DEBUG_GDB | |
159 | printf("reply='%s'\n", buf); | |
160 | #endif | |
161 | ||
162 | for(;;) { | |
163 | buf1[0] = '$'; | |
858693c6 | 164 | put_buffer(s, buf1, 1); |
b4608c04 | 165 | len = strlen(buf); |
858693c6 | 166 | put_buffer(s, buf, len); |
b4608c04 FB |
167 | csum = 0; |
168 | for(i = 0; i < len; i++) { | |
169 | csum += buf[i]; | |
170 | } | |
171 | buf1[0] = '#'; | |
172 | buf1[1] = tohex((csum >> 4) & 0xf); | |
173 | buf1[2] = tohex((csum) & 0xf); | |
174 | ||
858693c6 | 175 | put_buffer(s, buf1, 3); |
b4608c04 | 176 | |
858693c6 | 177 | ch = get_char(s); |
b4608c04 FB |
178 | if (ch < 0) |
179 | return -1; | |
180 | if (ch == '+') | |
181 | break; | |
182 | } | |
183 | return 0; | |
184 | } | |
185 | ||
6da41eaf FB |
186 | #if defined(TARGET_I386) |
187 | ||
6da41eaf FB |
188 | static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) |
189 | { | |
e95c8d51 | 190 | uint32_t *registers = (uint32_t *)mem_buf; |
6da41eaf FB |
191 | int i, fpus; |
192 | ||
193 | for(i = 0; i < 8; i++) { | |
e95c8d51 | 194 | registers[i] = env->regs[i]; |
6da41eaf | 195 | } |
e95c8d51 FB |
196 | registers[8] = env->eip; |
197 | registers[9] = env->eflags; | |
198 | registers[10] = env->segs[R_CS].selector; | |
199 | registers[11] = env->segs[R_SS].selector; | |
200 | registers[12] = env->segs[R_DS].selector; | |
201 | registers[13] = env->segs[R_ES].selector; | |
202 | registers[14] = env->segs[R_FS].selector; | |
203 | registers[15] = env->segs[R_GS].selector; | |
6da41eaf FB |
204 | /* XXX: convert floats */ |
205 | for(i = 0; i < 8; i++) { | |
206 | memcpy(mem_buf + 16 * 4 + i * 10, &env->fpregs[i], 10); | |
207 | } | |
e95c8d51 | 208 | registers[36] = env->fpuc; |
6da41eaf | 209 | fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
e95c8d51 FB |
210 | registers[37] = fpus; |
211 | registers[38] = 0; /* XXX: convert tags */ | |
212 | registers[39] = 0; /* fiseg */ | |
213 | registers[40] = 0; /* fioff */ | |
214 | registers[41] = 0; /* foseg */ | |
215 | registers[42] = 0; /* fooff */ | |
216 | registers[43] = 0; /* fop */ | |
217 | ||
218 | for(i = 0; i < 16; i++) | |
219 | tswapls(®isters[i]); | |
220 | for(i = 36; i < 44; i++) | |
221 | tswapls(®isters[i]); | |
6da41eaf FB |
222 | return 44 * 4; |
223 | } | |
224 | ||
225 | static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) | |
226 | { | |
227 | uint32_t *registers = (uint32_t *)mem_buf; | |
228 | int i; | |
229 | ||
230 | for(i = 0; i < 8; i++) { | |
231 | env->regs[i] = tswapl(registers[i]); | |
232 | } | |
e95c8d51 FB |
233 | env->eip = tswapl(registers[8]); |
234 | env->eflags = tswapl(registers[9]); | |
6da41eaf FB |
235 | #if defined(CONFIG_USER_ONLY) |
236 | #define LOAD_SEG(index, sreg)\ | |
237 | if (tswapl(registers[index]) != env->segs[sreg].selector)\ | |
238 | cpu_x86_load_seg(env, sreg, tswapl(registers[index])); | |
239 | LOAD_SEG(10, R_CS); | |
240 | LOAD_SEG(11, R_SS); | |
241 | LOAD_SEG(12, R_DS); | |
242 | LOAD_SEG(13, R_ES); | |
243 | LOAD_SEG(14, R_FS); | |
244 | LOAD_SEG(15, R_GS); | |
245 | #endif | |
246 | } | |
247 | ||
9e62fd7f | 248 | #elif defined (TARGET_PPC) |
9e62fd7f FB |
249 | static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) |
250 | { | |
a541f297 | 251 | uint32_t *registers = (uint32_t *)mem_buf, tmp; |
9e62fd7f FB |
252 | int i; |
253 | ||
254 | /* fill in gprs */ | |
a541f297 | 255 | for(i = 0; i < 32; i++) { |
e95c8d51 | 256 | registers[i] = tswapl(env->gpr[i]); |
9e62fd7f FB |
257 | } |
258 | /* fill in fprs */ | |
259 | for (i = 0; i < 32; i++) { | |
e95c8d51 FB |
260 | registers[(i * 2) + 32] = tswapl(*((uint32_t *)&env->fpr[i])); |
261 | registers[(i * 2) + 33] = tswapl(*((uint32_t *)&env->fpr[i] + 1)); | |
9e62fd7f FB |
262 | } |
263 | /* nip, msr, ccr, lnk, ctr, xer, mq */ | |
e95c8d51 | 264 | registers[96] = tswapl(env->nip); |
3fc6c082 | 265 | registers[97] = tswapl(do_load_msr(env)); |
9e62fd7f FB |
266 | tmp = 0; |
267 | for (i = 0; i < 8; i++) | |
a541f297 | 268 | tmp |= env->crf[i] << (32 - ((i + 1) * 4)); |
e95c8d51 FB |
269 | registers[98] = tswapl(tmp); |
270 | registers[99] = tswapl(env->lr); | |
271 | registers[100] = tswapl(env->ctr); | |
3fc6c082 | 272 | registers[101] = tswapl(do_load_xer(env)); |
e95c8d51 | 273 | registers[102] = 0; |
a541f297 FB |
274 | |
275 | return 103 * 4; | |
9e62fd7f FB |
276 | } |
277 | ||
278 | static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) | |
279 | { | |
280 | uint32_t *registers = (uint32_t *)mem_buf; | |
281 | int i; | |
282 | ||
283 | /* fill in gprs */ | |
284 | for (i = 0; i < 32; i++) { | |
e95c8d51 | 285 | env->gpr[i] = tswapl(registers[i]); |
9e62fd7f FB |
286 | } |
287 | /* fill in fprs */ | |
288 | for (i = 0; i < 32; i++) { | |
e95c8d51 FB |
289 | *((uint32_t *)&env->fpr[i]) = tswapl(registers[(i * 2) + 32]); |
290 | *((uint32_t *)&env->fpr[i] + 1) = tswapl(registers[(i * 2) + 33]); | |
9e62fd7f FB |
291 | } |
292 | /* nip, msr, ccr, lnk, ctr, xer, mq */ | |
e95c8d51 | 293 | env->nip = tswapl(registers[96]); |
3fc6c082 | 294 | do_store_msr(env, tswapl(registers[97])); |
e95c8d51 | 295 | registers[98] = tswapl(registers[98]); |
9e62fd7f | 296 | for (i = 0; i < 8; i++) |
a541f297 | 297 | env->crf[i] = (registers[98] >> (32 - ((i + 1) * 4))) & 0xF; |
e95c8d51 FB |
298 | env->lr = tswapl(registers[99]); |
299 | env->ctr = tswapl(registers[100]); | |
3fc6c082 | 300 | do_store_xer(env, tswapl(registers[101])); |
e95c8d51 FB |
301 | } |
302 | #elif defined (TARGET_SPARC) | |
303 | static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) | |
304 | { | |
3475187d | 305 | target_ulong *registers = (target_ulong *)mem_buf; |
e95c8d51 FB |
306 | int i; |
307 | ||
308 | /* fill in g0..g7 */ | |
48b2c193 | 309 | for(i = 0; i < 8; i++) { |
e95c8d51 FB |
310 | registers[i] = tswapl(env->gregs[i]); |
311 | } | |
312 | /* fill in register window */ | |
313 | for(i = 0; i < 24; i++) { | |
314 | registers[i + 8] = tswapl(env->regwptr[i]); | |
315 | } | |
316 | /* fill in fprs */ | |
317 | for (i = 0; i < 32; i++) { | |
318 | registers[i + 32] = tswapl(*((uint32_t *)&env->fpr[i])); | |
319 | } | |
3475187d | 320 | #ifndef TARGET_SPARC64 |
e95c8d51 FB |
321 | /* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */ |
322 | registers[64] = tswapl(env->y); | |
3475187d FB |
323 | { |
324 | target_ulong tmp; | |
325 | ||
326 | tmp = GET_PSR(env); | |
327 | registers[65] = tswapl(tmp); | |
328 | } | |
e95c8d51 FB |
329 | registers[66] = tswapl(env->wim); |
330 | registers[67] = tswapl(env->tbr); | |
331 | registers[68] = tswapl(env->pc); | |
332 | registers[69] = tswapl(env->npc); | |
333 | registers[70] = tswapl(env->fsr); | |
334 | registers[71] = 0; /* csr */ | |
335 | registers[72] = 0; | |
3475187d FB |
336 | return 73 * sizeof(target_ulong); |
337 | #else | |
338 | for (i = 0; i < 32; i += 2) { | |
339 | registers[i/2 + 64] = tswapl(*((uint64_t *)&env->fpr[i])); | |
340 | } | |
341 | registers[81] = tswapl(env->pc); | |
342 | registers[82] = tswapl(env->npc); | |
343 | registers[83] = tswapl(env->tstate[env->tl]); | |
344 | registers[84] = tswapl(env->fsr); | |
345 | registers[85] = tswapl(env->fprs); | |
346 | registers[86] = tswapl(env->y); | |
347 | return 87 * sizeof(target_ulong); | |
348 | #endif | |
e95c8d51 FB |
349 | } |
350 | ||
351 | static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) | |
352 | { | |
3475187d | 353 | target_ulong *registers = (target_ulong *)mem_buf; |
e95c8d51 FB |
354 | int i; |
355 | ||
356 | /* fill in g0..g7 */ | |
357 | for(i = 0; i < 7; i++) { | |
358 | env->gregs[i] = tswapl(registers[i]); | |
359 | } | |
360 | /* fill in register window */ | |
361 | for(i = 0; i < 24; i++) { | |
3475187d | 362 | env->regwptr[i] = tswapl(registers[i + 8]); |
e95c8d51 FB |
363 | } |
364 | /* fill in fprs */ | |
365 | for (i = 0; i < 32; i++) { | |
366 | *((uint32_t *)&env->fpr[i]) = tswapl(registers[i + 32]); | |
367 | } | |
3475187d | 368 | #ifndef TARGET_SPARC64 |
e95c8d51 FB |
369 | /* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */ |
370 | env->y = tswapl(registers[64]); | |
e80cfcfc | 371 | PUT_PSR(env, tswapl(registers[65])); |
e95c8d51 FB |
372 | env->wim = tswapl(registers[66]); |
373 | env->tbr = tswapl(registers[67]); | |
374 | env->pc = tswapl(registers[68]); | |
375 | env->npc = tswapl(registers[69]); | |
376 | env->fsr = tswapl(registers[70]); | |
3475187d FB |
377 | #else |
378 | for (i = 0; i < 32; i += 2) { | |
379 | uint64_t tmp; | |
380 | tmp = tswapl(registers[i/2 + 64]) << 32; | |
381 | tmp |= tswapl(registers[i/2 + 64 + 1]); | |
382 | *((uint64_t *)&env->fpr[i]) = tmp; | |
383 | } | |
384 | env->pc = tswapl(registers[81]); | |
385 | env->npc = tswapl(registers[82]); | |
386 | env->tstate[env->tl] = tswapl(registers[83]); | |
387 | env->fsr = tswapl(registers[84]); | |
388 | env->fprs = tswapl(registers[85]); | |
389 | env->y = tswapl(registers[86]); | |
390 | #endif | |
9e62fd7f | 391 | } |
1fddef4b FB |
392 | #elif defined (TARGET_ARM) |
393 | static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) | |
394 | { | |
395 | int i; | |
396 | uint8_t *ptr; | |
397 | ||
398 | ptr = mem_buf; | |
399 | /* 16 core integer registers (4 bytes each). */ | |
400 | for (i = 0; i < 16; i++) | |
401 | { | |
402 | *(uint32_t *)ptr = tswapl(env->regs[i]); | |
403 | ptr += 4; | |
404 | } | |
405 | /* 8 FPA registers (12 bytes each), FPS (4 bytes). | |
406 | Not yet implemented. */ | |
407 | memset (ptr, 0, 8 * 12 + 4); | |
408 | ptr += 8 * 12 + 4; | |
409 | /* CPSR (4 bytes). */ | |
b5ff1b31 | 410 | *(uint32_t *)ptr = tswapl (cpsr_read(env)); |
1fddef4b FB |
411 | ptr += 4; |
412 | ||
413 | return ptr - mem_buf; | |
414 | } | |
6da41eaf | 415 | |
1fddef4b FB |
416 | static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) |
417 | { | |
418 | int i; | |
419 | uint8_t *ptr; | |
420 | ||
421 | ptr = mem_buf; | |
422 | /* Core integer registers. */ | |
423 | for (i = 0; i < 16; i++) | |
424 | { | |
425 | env->regs[i] = tswapl(*(uint32_t *)ptr); | |
426 | ptr += 4; | |
427 | } | |
428 | /* Ignore FPA regs and scr. */ | |
429 | ptr += 8 * 12 + 4; | |
b5ff1b31 | 430 | cpsr_write (env, tswapl(*(uint32_t *)ptr), 0xffffffff); |
1fddef4b | 431 | } |
6f970bd9 FB |
432 | #elif defined (TARGET_MIPS) |
433 | static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) | |
434 | { | |
435 | int i; | |
436 | uint8_t *ptr; | |
437 | ||
438 | ptr = mem_buf; | |
439 | for (i = 0; i < 32; i++) | |
440 | { | |
441 | *(uint32_t *)ptr = tswapl(env->gpr[i]); | |
442 | ptr += 4; | |
443 | } | |
444 | ||
445 | *(uint32_t *)ptr = tswapl(env->CP0_Status); | |
446 | ptr += 4; | |
447 | ||
448 | *(uint32_t *)ptr = tswapl(env->LO); | |
449 | ptr += 4; | |
450 | ||
451 | *(uint32_t *)ptr = tswapl(env->HI); | |
452 | ptr += 4; | |
453 | ||
454 | *(uint32_t *)ptr = tswapl(env->CP0_BadVAddr); | |
455 | ptr += 4; | |
456 | ||
457 | *(uint32_t *)ptr = tswapl(env->CP0_Cause); | |
458 | ptr += 4; | |
459 | ||
460 | *(uint32_t *)ptr = tswapl(env->PC); | |
461 | ptr += 4; | |
462 | ||
463 | /* 32 FP registers, fsr, fir, fp. Not yet implemented. */ | |
464 | ||
465 | return ptr - mem_buf; | |
466 | } | |
467 | ||
468 | static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) | |
469 | { | |
470 | int i; | |
471 | uint8_t *ptr; | |
472 | ||
473 | ptr = mem_buf; | |
474 | for (i = 0; i < 32; i++) | |
475 | { | |
476 | env->gpr[i] = tswapl(*(uint32_t *)ptr); | |
477 | ptr += 4; | |
478 | } | |
479 | ||
480 | env->CP0_Status = tswapl(*(uint32_t *)ptr); | |
481 | ptr += 4; | |
482 | ||
483 | env->LO = tswapl(*(uint32_t *)ptr); | |
484 | ptr += 4; | |
485 | ||
486 | env->HI = tswapl(*(uint32_t *)ptr); | |
487 | ptr += 4; | |
488 | ||
489 | env->CP0_BadVAddr = tswapl(*(uint32_t *)ptr); | |
490 | ptr += 4; | |
491 | ||
492 | env->CP0_Cause = tswapl(*(uint32_t *)ptr); | |
493 | ptr += 4; | |
494 | ||
495 | env->PC = tswapl(*(uint32_t *)ptr); | |
496 | ptr += 4; | |
497 | } | |
fdf9b3e8 FB |
498 | #elif defined (TARGET_SH4) |
499 | static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) | |
500 | { | |
501 | uint32_t *ptr = (uint32_t *)mem_buf; | |
502 | int i; | |
503 | ||
504 | #define SAVE(x) *ptr++=tswapl(x) | |
505 | for (i = 0; i < 16; i++) SAVE(env->gregs[i]); | |
506 | SAVE (env->pc); | |
507 | SAVE (env->pr); | |
508 | SAVE (env->gbr); | |
509 | SAVE (env->vbr); | |
510 | SAVE (env->mach); | |
511 | SAVE (env->macl); | |
512 | SAVE (env->sr); | |
513 | SAVE (0); /* TICKS */ | |
514 | SAVE (0); /* STALLS */ | |
515 | SAVE (0); /* CYCLES */ | |
516 | SAVE (0); /* INSTS */ | |
517 | SAVE (0); /* PLR */ | |
518 | ||
519 | return ((uint8_t *)ptr - mem_buf); | |
520 | } | |
521 | ||
522 | static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) | |
523 | { | |
524 | uint32_t *ptr = (uint32_t *)mem_buf; | |
525 | int i; | |
526 | ||
527 | #define LOAD(x) (x)=*ptr++; | |
528 | for (i = 0; i < 16; i++) LOAD(env->gregs[i]); | |
529 | LOAD (env->pc); | |
530 | LOAD (env->pr); | |
531 | LOAD (env->gbr); | |
532 | LOAD (env->vbr); | |
533 | LOAD (env->mach); | |
534 | LOAD (env->macl); | |
535 | LOAD (env->sr); | |
536 | } | |
1fddef4b | 537 | #else |
6da41eaf FB |
538 | static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) |
539 | { | |
540 | return 0; | |
541 | } | |
542 | ||
543 | static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) | |
544 | { | |
545 | } | |
546 | ||
547 | #endif | |
b4608c04 | 548 | |
1fddef4b | 549 | static int gdb_handle_packet(GDBState *s, CPUState *env, const char *line_buf) |
b4608c04 | 550 | { |
b4608c04 | 551 | const char *p; |
858693c6 | 552 | int ch, reg_size, type; |
b4608c04 FB |
553 | char buf[4096]; |
554 | uint8_t mem_buf[2000]; | |
555 | uint32_t *registers; | |
556 | uint32_t addr, len; | |
557 | ||
858693c6 FB |
558 | #ifdef DEBUG_GDB |
559 | printf("command='%s'\n", line_buf); | |
560 | #endif | |
561 | p = line_buf; | |
562 | ch = *p++; | |
563 | switch(ch) { | |
564 | case '?': | |
1fddef4b | 565 | /* TODO: Make this return the correct value for user-mode. */ |
858693c6 FB |
566 | snprintf(buf, sizeof(buf), "S%02x", SIGTRAP); |
567 | put_packet(s, buf); | |
568 | break; | |
569 | case 'c': | |
570 | if (*p != '\0') { | |
571 | addr = strtoul(p, (char **)&p, 16); | |
4c3a88a2 | 572 | #if defined(TARGET_I386) |
858693c6 | 573 | env->eip = addr; |
5be1a8e0 | 574 | #elif defined (TARGET_PPC) |
858693c6 | 575 | env->nip = addr; |
8d5f07fa FB |
576 | #elif defined (TARGET_SPARC) |
577 | env->pc = addr; | |
578 | env->npc = addr + 4; | |
b5ff1b31 FB |
579 | #elif defined (TARGET_ARM) |
580 | env->regs[15] = addr; | |
fdf9b3e8 FB |
581 | #elif defined (TARGET_SH4) |
582 | env->pc = addr; | |
4c3a88a2 | 583 | #endif |
858693c6 | 584 | } |
41625033 FB |
585 | #ifdef CONFIG_USER_ONLY |
586 | s->running_state = 1; | |
587 | #else | |
588 | vm_start(); | |
589 | #endif | |
590 | return RS_IDLE; | |
858693c6 FB |
591 | case 's': |
592 | if (*p != '\0') { | |
593 | addr = strtoul(p, (char **)&p, 16); | |
c33a346e | 594 | #if defined(TARGET_I386) |
858693c6 | 595 | env->eip = addr; |
5be1a8e0 | 596 | #elif defined (TARGET_PPC) |
858693c6 | 597 | env->nip = addr; |
8d5f07fa FB |
598 | #elif defined (TARGET_SPARC) |
599 | env->pc = addr; | |
600 | env->npc = addr + 4; | |
b5ff1b31 FB |
601 | #elif defined (TARGET_ARM) |
602 | env->regs[15] = addr; | |
fdf9b3e8 FB |
603 | #elif defined (TARGET_SH4) |
604 | env->pc = addr; | |
c33a346e | 605 | #endif |
858693c6 FB |
606 | } |
607 | cpu_single_step(env, 1); | |
41625033 FB |
608 | #ifdef CONFIG_USER_ONLY |
609 | s->running_state = 1; | |
610 | #else | |
611 | vm_start(); | |
612 | #endif | |
613 | return RS_IDLE; | |
858693c6 FB |
614 | case 'g': |
615 | reg_size = cpu_gdb_read_registers(env, mem_buf); | |
616 | memtohex(buf, mem_buf, reg_size); | |
617 | put_packet(s, buf); | |
618 | break; | |
619 | case 'G': | |
620 | registers = (void *)mem_buf; | |
621 | len = strlen(p) / 2; | |
622 | hextomem((uint8_t *)registers, p, len); | |
623 | cpu_gdb_write_registers(env, mem_buf, len); | |
624 | put_packet(s, "OK"); | |
625 | break; | |
626 | case 'm': | |
627 | addr = strtoul(p, (char **)&p, 16); | |
628 | if (*p == ',') | |
629 | p++; | |
630 | len = strtoul(p, NULL, 16); | |
6f970bd9 FB |
631 | if (cpu_memory_rw_debug(env, addr, mem_buf, len, 0) != 0) { |
632 | put_packet (s, "E14"); | |
633 | } else { | |
634 | memtohex(buf, mem_buf, len); | |
635 | put_packet(s, buf); | |
636 | } | |
858693c6 FB |
637 | break; |
638 | case 'M': | |
639 | addr = strtoul(p, (char **)&p, 16); | |
640 | if (*p == ',') | |
641 | p++; | |
642 | len = strtoul(p, (char **)&p, 16); | |
b328f873 | 643 | if (*p == ':') |
858693c6 FB |
644 | p++; |
645 | hextomem(mem_buf, p, len); | |
646 | if (cpu_memory_rw_debug(env, addr, mem_buf, len, 1) != 0) | |
905f20b1 | 647 | put_packet(s, "E14"); |
858693c6 FB |
648 | else |
649 | put_packet(s, "OK"); | |
650 | break; | |
651 | case 'Z': | |
652 | type = strtoul(p, (char **)&p, 16); | |
653 | if (*p == ',') | |
654 | p++; | |
655 | addr = strtoul(p, (char **)&p, 16); | |
656 | if (*p == ',') | |
657 | p++; | |
658 | len = strtoul(p, (char **)&p, 16); | |
659 | if (type == 0 || type == 1) { | |
660 | if (cpu_breakpoint_insert(env, addr) < 0) | |
661 | goto breakpoint_error; | |
662 | put_packet(s, "OK"); | |
663 | } else { | |
664 | breakpoint_error: | |
905f20b1 | 665 | put_packet(s, "E22"); |
858693c6 FB |
666 | } |
667 | break; | |
668 | case 'z': | |
669 | type = strtoul(p, (char **)&p, 16); | |
670 | if (*p == ',') | |
671 | p++; | |
672 | addr = strtoul(p, (char **)&p, 16); | |
673 | if (*p == ',') | |
674 | p++; | |
675 | len = strtoul(p, (char **)&p, 16); | |
676 | if (type == 0 || type == 1) { | |
677 | cpu_breakpoint_remove(env, addr); | |
678 | put_packet(s, "OK"); | |
679 | } else { | |
680 | goto breakpoint_error; | |
681 | } | |
682 | break; | |
683 | default: | |
684 | // unknown_command: | |
685 | /* put empty packet */ | |
686 | buf[0] = '\0'; | |
687 | put_packet(s, buf); | |
688 | break; | |
689 | } | |
690 | return RS_IDLE; | |
691 | } | |
692 | ||
612458f5 FB |
693 | extern void tb_flush(CPUState *env); |
694 | ||
1fddef4b | 695 | #ifndef CONFIG_USER_ONLY |
858693c6 FB |
696 | static void gdb_vm_stopped(void *opaque, int reason) |
697 | { | |
698 | GDBState *s = opaque; | |
699 | char buf[256]; | |
700 | int ret; | |
701 | ||
702 | /* disable single step if it was enable */ | |
6a00d601 | 703 | cpu_single_step(s->env, 0); |
858693c6 | 704 | |
e80cfcfc | 705 | if (reason == EXCP_DEBUG) { |
6a00d601 | 706 | tb_flush(s->env); |
858693c6 | 707 | ret = SIGTRAP; |
bbeb7b5c FB |
708 | } else if (reason == EXCP_INTERRUPT) { |
709 | ret = SIGINT; | |
710 | } else { | |
858693c6 | 711 | ret = 0; |
bbeb7b5c | 712 | } |
858693c6 FB |
713 | snprintf(buf, sizeof(buf), "S%02x", ret); |
714 | put_packet(s, buf); | |
715 | } | |
1fddef4b | 716 | #endif |
858693c6 | 717 | |
6a00d601 | 718 | static void gdb_read_byte(GDBState *s, int ch) |
858693c6 | 719 | { |
6a00d601 | 720 | CPUState *env = s->env; |
858693c6 FB |
721 | int i, csum; |
722 | char reply[1]; | |
723 | ||
1fddef4b | 724 | #ifndef CONFIG_USER_ONLY |
858693c6 FB |
725 | if (vm_running) { |
726 | /* when the CPU is running, we cannot do anything except stop | |
727 | it when receiving a char */ | |
728 | vm_stop(EXCP_INTERRUPT); | |
41625033 | 729 | } else |
1fddef4b | 730 | #endif |
41625033 | 731 | { |
858693c6 FB |
732 | switch(s->state) { |
733 | case RS_IDLE: | |
734 | if (ch == '$') { | |
735 | s->line_buf_index = 0; | |
736 | s->state = RS_GETLINE; | |
c33a346e | 737 | } |
b4608c04 | 738 | break; |
858693c6 FB |
739 | case RS_GETLINE: |
740 | if (ch == '#') { | |
741 | s->state = RS_CHKSUM1; | |
742 | } else if (s->line_buf_index >= sizeof(s->line_buf) - 1) { | |
743 | s->state = RS_IDLE; | |
4c3a88a2 | 744 | } else { |
858693c6 | 745 | s->line_buf[s->line_buf_index++] = ch; |
4c3a88a2 FB |
746 | } |
747 | break; | |
858693c6 FB |
748 | case RS_CHKSUM1: |
749 | s->line_buf[s->line_buf_index] = '\0'; | |
750 | s->line_csum = fromhex(ch) << 4; | |
751 | s->state = RS_CHKSUM2; | |
752 | break; | |
753 | case RS_CHKSUM2: | |
754 | s->line_csum |= fromhex(ch); | |
755 | csum = 0; | |
756 | for(i = 0; i < s->line_buf_index; i++) { | |
757 | csum += s->line_buf[i]; | |
758 | } | |
759 | if (s->line_csum != (csum & 0xff)) { | |
760 | reply[0] = '-'; | |
761 | put_buffer(s, reply, 1); | |
762 | s->state = RS_IDLE; | |
4c3a88a2 | 763 | } else { |
858693c6 FB |
764 | reply[0] = '+'; |
765 | put_buffer(s, reply, 1); | |
1fddef4b | 766 | s->state = gdb_handle_packet(s, env, s->line_buf); |
4c3a88a2 FB |
767 | } |
768 | break; | |
858693c6 FB |
769 | } |
770 | } | |
771 | } | |
772 | ||
1fddef4b FB |
773 | #ifdef CONFIG_USER_ONLY |
774 | int | |
775 | gdb_handlesig (CPUState *env, int sig) | |
776 | { | |
777 | GDBState *s; | |
778 | char buf[256]; | |
779 | int n; | |
780 | ||
781 | if (gdbserver_fd < 0) | |
782 | return sig; | |
783 | ||
784 | s = &gdbserver_state; | |
785 | ||
786 | /* disable single step if it was enabled */ | |
787 | cpu_single_step(env, 0); | |
788 | tb_flush(env); | |
789 | ||
790 | if (sig != 0) | |
791 | { | |
792 | snprintf(buf, sizeof(buf), "S%02x", sig); | |
793 | put_packet(s, buf); | |
794 | } | |
795 | ||
1fddef4b FB |
796 | sig = 0; |
797 | s->state = RS_IDLE; | |
41625033 FB |
798 | s->running_state = 0; |
799 | while (s->running_state == 0) { | |
1fddef4b FB |
800 | n = read (s->fd, buf, 256); |
801 | if (n > 0) | |
802 | { | |
803 | int i; | |
804 | ||
805 | for (i = 0; i < n; i++) | |
6a00d601 | 806 | gdb_read_byte (s, buf[i]); |
1fddef4b FB |
807 | } |
808 | else if (n == 0 || errno != EAGAIN) | |
809 | { | |
810 | /* XXX: Connection closed. Should probably wait for annother | |
811 | connection before continuing. */ | |
812 | return sig; | |
813 | } | |
41625033 | 814 | } |
1fddef4b FB |
815 | return sig; |
816 | } | |
e9009676 FB |
817 | |
818 | /* Tell the remote gdb that the process has exited. */ | |
819 | void gdb_exit(CPUState *env, int code) | |
820 | { | |
821 | GDBState *s; | |
822 | char buf[4]; | |
823 | ||
824 | if (gdbserver_fd < 0) | |
825 | return; | |
826 | ||
827 | s = &gdbserver_state; | |
828 | ||
829 | snprintf(buf, sizeof(buf), "W%02x", code); | |
830 | put_packet(s, buf); | |
831 | } | |
832 | ||
1fddef4b | 833 | #else |
7c9d8e07 | 834 | static void gdb_read(void *opaque) |
858693c6 FB |
835 | { |
836 | GDBState *s = opaque; | |
7c9d8e07 FB |
837 | int i, size; |
838 | uint8_t buf[4096]; | |
839 | ||
8f447cc7 | 840 | size = recv(s->fd, buf, sizeof(buf), 0); |
7c9d8e07 FB |
841 | if (size < 0) |
842 | return; | |
858693c6 FB |
843 | if (size == 0) { |
844 | /* end of connection */ | |
845 | qemu_del_vm_stop_handler(gdb_vm_stopped, s); | |
7c9d8e07 | 846 | qemu_set_fd_handler(s->fd, NULL, NULL, NULL); |
858693c6 FB |
847 | qemu_free(s); |
848 | vm_start(); | |
849 | } else { | |
850 | for(i = 0; i < size; i++) | |
6a00d601 | 851 | gdb_read_byte(s, buf[i]); |
858693c6 FB |
852 | } |
853 | } | |
854 | ||
1fddef4b FB |
855 | #endif |
856 | ||
7c9d8e07 | 857 | static void gdb_accept(void *opaque) |
858693c6 FB |
858 | { |
859 | GDBState *s; | |
860 | struct sockaddr_in sockaddr; | |
861 | socklen_t len; | |
862 | int val, fd; | |
863 | ||
864 | for(;;) { | |
865 | len = sizeof(sockaddr); | |
866 | fd = accept(gdbserver_fd, (struct sockaddr *)&sockaddr, &len); | |
867 | if (fd < 0 && errno != EINTR) { | |
868 | perror("accept"); | |
869 | return; | |
870 | } else if (fd >= 0) { | |
b4608c04 FB |
871 | break; |
872 | } | |
873 | } | |
858693c6 FB |
874 | |
875 | /* set short latency */ | |
876 | val = 1; | |
8f447cc7 | 877 | setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val)); |
858693c6 | 878 | |
1fddef4b FB |
879 | #ifdef CONFIG_USER_ONLY |
880 | s = &gdbserver_state; | |
881 | memset (s, 0, sizeof (GDBState)); | |
882 | #else | |
858693c6 FB |
883 | s = qemu_mallocz(sizeof(GDBState)); |
884 | if (!s) { | |
885 | close(fd); | |
886 | return; | |
887 | } | |
1fddef4b | 888 | #endif |
6a00d601 | 889 | s->env = first_cpu; /* XXX: allow to change CPU */ |
858693c6 FB |
890 | s->fd = fd; |
891 | ||
8f447cc7 | 892 | #ifdef CONFIG_USER_ONLY |
858693c6 | 893 | fcntl(fd, F_SETFL, O_NONBLOCK); |
8f447cc7 FB |
894 | #else |
895 | socket_set_nonblock(fd); | |
858693c6 FB |
896 | |
897 | /* stop the VM */ | |
898 | vm_stop(EXCP_INTERRUPT); | |
899 | ||
900 | /* start handling I/O */ | |
7c9d8e07 | 901 | qemu_set_fd_handler(s->fd, gdb_read, NULL, s); |
858693c6 FB |
902 | /* when the VM is stopped, the following callback is called */ |
903 | qemu_add_vm_stop_handler(gdb_vm_stopped, s); | |
1fddef4b | 904 | #endif |
858693c6 FB |
905 | } |
906 | ||
907 | static int gdbserver_open(int port) | |
908 | { | |
909 | struct sockaddr_in sockaddr; | |
910 | int fd, val, ret; | |
911 | ||
912 | fd = socket(PF_INET, SOCK_STREAM, 0); | |
913 | if (fd < 0) { | |
914 | perror("socket"); | |
915 | return -1; | |
916 | } | |
917 | ||
918 | /* allow fast reuse */ | |
919 | val = 1; | |
8f447cc7 | 920 | setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&val, sizeof(val)); |
858693c6 FB |
921 | |
922 | sockaddr.sin_family = AF_INET; | |
923 | sockaddr.sin_port = htons(port); | |
924 | sockaddr.sin_addr.s_addr = 0; | |
925 | ret = bind(fd, (struct sockaddr *)&sockaddr, sizeof(sockaddr)); | |
926 | if (ret < 0) { | |
927 | perror("bind"); | |
928 | return -1; | |
929 | } | |
930 | ret = listen(fd, 0); | |
931 | if (ret < 0) { | |
932 | perror("listen"); | |
933 | return -1; | |
934 | } | |
1fddef4b | 935 | #ifndef CONFIG_USER_ONLY |
8f447cc7 | 936 | socket_set_nonblock(fd); |
1fddef4b | 937 | #endif |
858693c6 FB |
938 | return fd; |
939 | } | |
940 | ||
941 | int gdbserver_start(int port) | |
942 | { | |
943 | gdbserver_fd = gdbserver_open(port); | |
944 | if (gdbserver_fd < 0) | |
945 | return -1; | |
946 | /* accept connections */ | |
1fddef4b | 947 | #ifdef CONFIG_USER_ONLY |
7c9d8e07 | 948 | gdb_accept (NULL); |
1fddef4b | 949 | #else |
7c9d8e07 | 950 | qemu_set_fd_handler(gdbserver_fd, gdb_accept, NULL, NULL); |
1fddef4b | 951 | #endif |
b4608c04 FB |
952 | return 0; |
953 | } |