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Commit | Line | Data |
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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 | */ | |
978efd6a | 20 | #include "config.h" |
1fddef4b FB |
21 | #ifdef CONFIG_USER_ONLY |
22 | #include <stdlib.h> | |
23 | #include <stdio.h> | |
24 | #include <stdarg.h> | |
25 | #include <string.h> | |
26 | #include <errno.h> | |
27 | #include <unistd.h> | |
978efd6a | 28 | #include <fcntl.h> |
1fddef4b FB |
29 | |
30 | #include "qemu.h" | |
31 | #else | |
67b915a5 | 32 | #include "vl.h" |
1fddef4b | 33 | #endif |
67b915a5 | 34 | |
8f447cc7 FB |
35 | #include "qemu_socket.h" |
36 | #ifdef _WIN32 | |
37 | /* XXX: these constants may be independent of the host ones even for Unix */ | |
38 | #ifndef SIGTRAP | |
39 | #define SIGTRAP 5 | |
40 | #endif | |
41 | #ifndef SIGINT | |
42 | #define SIGINT 2 | |
43 | #endif | |
44 | #else | |
b4608c04 | 45 | #include <signal.h> |
8f447cc7 | 46 | #endif |
b4608c04 | 47 | |
4abe615b | 48 | //#define DEBUG_GDB |
b4608c04 | 49 | |
858693c6 FB |
50 | enum RSState { |
51 | RS_IDLE, | |
52 | RS_GETLINE, | |
53 | RS_CHKSUM1, | |
54 | RS_CHKSUM2, | |
55 | }; | |
858693c6 | 56 | typedef struct GDBState { |
6a00d601 | 57 | CPUState *env; /* current CPU */ |
41625033 | 58 | enum RSState state; /* parsing state */ |
858693c6 FB |
59 | char line_buf[4096]; |
60 | int line_buf_index; | |
61 | int line_csum; | |
4046d913 PB |
62 | char last_packet[4100]; |
63 | int last_packet_len; | |
41625033 | 64 | #ifdef CONFIG_USER_ONLY |
4046d913 | 65 | int fd; |
41625033 | 66 | int running_state; |
4046d913 PB |
67 | #else |
68 | CharDriverState *chr; | |
41625033 | 69 | #endif |
858693c6 | 70 | } GDBState; |
b4608c04 | 71 | |
1fddef4b | 72 | #ifdef CONFIG_USER_ONLY |
4046d913 PB |
73 | /* XXX: This is not thread safe. Do we care? */ |
74 | static int gdbserver_fd = -1; | |
75 | ||
1fddef4b FB |
76 | /* XXX: remove this hack. */ |
77 | static GDBState gdbserver_state; | |
1fddef4b | 78 | |
858693c6 | 79 | static int get_char(GDBState *s) |
b4608c04 FB |
80 | { |
81 | uint8_t ch; | |
82 | int ret; | |
83 | ||
84 | for(;;) { | |
8f447cc7 | 85 | ret = recv(s->fd, &ch, 1, 0); |
b4608c04 FB |
86 | if (ret < 0) { |
87 | if (errno != EINTR && errno != EAGAIN) | |
88 | return -1; | |
89 | } else if (ret == 0) { | |
90 | return -1; | |
91 | } else { | |
92 | break; | |
93 | } | |
94 | } | |
95 | return ch; | |
96 | } | |
4046d913 | 97 | #endif |
b4608c04 | 98 | |
858693c6 | 99 | static void put_buffer(GDBState *s, const uint8_t *buf, int len) |
b4608c04 | 100 | { |
4046d913 | 101 | #ifdef CONFIG_USER_ONLY |
b4608c04 FB |
102 | int ret; |
103 | ||
104 | while (len > 0) { | |
8f447cc7 | 105 | ret = send(s->fd, buf, len, 0); |
b4608c04 FB |
106 | if (ret < 0) { |
107 | if (errno != EINTR && errno != EAGAIN) | |
108 | return; | |
109 | } else { | |
110 | buf += ret; | |
111 | len -= ret; | |
112 | } | |
113 | } | |
4046d913 PB |
114 | #else |
115 | qemu_chr_write(s->chr, buf, len); | |
116 | #endif | |
b4608c04 FB |
117 | } |
118 | ||
119 | static inline int fromhex(int v) | |
120 | { | |
121 | if (v >= '0' && v <= '9') | |
122 | return v - '0'; | |
123 | else if (v >= 'A' && v <= 'F') | |
124 | return v - 'A' + 10; | |
125 | else if (v >= 'a' && v <= 'f') | |
126 | return v - 'a' + 10; | |
127 | else | |
128 | return 0; | |
129 | } | |
130 | ||
131 | static inline int tohex(int v) | |
132 | { | |
133 | if (v < 10) | |
134 | return v + '0'; | |
135 | else | |
136 | return v - 10 + 'a'; | |
137 | } | |
138 | ||
139 | static void memtohex(char *buf, const uint8_t *mem, int len) | |
140 | { | |
141 | int i, c; | |
142 | char *q; | |
143 | q = buf; | |
144 | for(i = 0; i < len; i++) { | |
145 | c = mem[i]; | |
146 | *q++ = tohex(c >> 4); | |
147 | *q++ = tohex(c & 0xf); | |
148 | } | |
149 | *q = '\0'; | |
150 | } | |
151 | ||
152 | static void hextomem(uint8_t *mem, const char *buf, int len) | |
153 | { | |
154 | int i; | |
155 | ||
156 | for(i = 0; i < len; i++) { | |
157 | mem[i] = (fromhex(buf[0]) << 4) | fromhex(buf[1]); | |
158 | buf += 2; | |
159 | } | |
160 | } | |
161 | ||
b4608c04 | 162 | /* return -1 if error, 0 if OK */ |
858693c6 | 163 | static int put_packet(GDBState *s, char *buf) |
b4608c04 | 164 | { |
4046d913 PB |
165 | int len, csum, i; |
166 | char *p; | |
b4608c04 FB |
167 | |
168 | #ifdef DEBUG_GDB | |
169 | printf("reply='%s'\n", buf); | |
170 | #endif | |
171 | ||
172 | for(;;) { | |
4046d913 PB |
173 | p = s->last_packet; |
174 | *(p++) = '$'; | |
b4608c04 | 175 | len = strlen(buf); |
4046d913 PB |
176 | memcpy(p, buf, len); |
177 | p += len; | |
b4608c04 FB |
178 | csum = 0; |
179 | for(i = 0; i < len; i++) { | |
180 | csum += buf[i]; | |
181 | } | |
4046d913 PB |
182 | *(p++) = '#'; |
183 | *(p++) = tohex((csum >> 4) & 0xf); | |
184 | *(p++) = tohex((csum) & 0xf); | |
b4608c04 | 185 | |
4046d913 PB |
186 | s->last_packet_len = p - s->last_packet; |
187 | put_buffer(s, s->last_packet, s->last_packet_len); | |
b4608c04 | 188 | |
4046d913 PB |
189 | #ifdef CONFIG_USER_ONLY |
190 | i = get_char(s); | |
191 | if (i < 0) | |
b4608c04 | 192 | return -1; |
4046d913 | 193 | if (i == '+') |
b4608c04 | 194 | break; |
4046d913 PB |
195 | #else |
196 | break; | |
197 | #endif | |
b4608c04 FB |
198 | } |
199 | return 0; | |
200 | } | |
201 | ||
6da41eaf FB |
202 | #if defined(TARGET_I386) |
203 | ||
6da41eaf FB |
204 | static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) |
205 | { | |
e95c8d51 | 206 | uint32_t *registers = (uint32_t *)mem_buf; |
6da41eaf FB |
207 | int i, fpus; |
208 | ||
209 | for(i = 0; i < 8; i++) { | |
e95c8d51 | 210 | registers[i] = env->regs[i]; |
6da41eaf | 211 | } |
e95c8d51 FB |
212 | registers[8] = env->eip; |
213 | registers[9] = env->eflags; | |
214 | registers[10] = env->segs[R_CS].selector; | |
215 | registers[11] = env->segs[R_SS].selector; | |
216 | registers[12] = env->segs[R_DS].selector; | |
217 | registers[13] = env->segs[R_ES].selector; | |
218 | registers[14] = env->segs[R_FS].selector; | |
219 | registers[15] = env->segs[R_GS].selector; | |
6da41eaf FB |
220 | /* XXX: convert floats */ |
221 | for(i = 0; i < 8; i++) { | |
222 | memcpy(mem_buf + 16 * 4 + i * 10, &env->fpregs[i], 10); | |
223 | } | |
e95c8d51 | 224 | registers[36] = env->fpuc; |
6da41eaf | 225 | fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
e95c8d51 FB |
226 | registers[37] = fpus; |
227 | registers[38] = 0; /* XXX: convert tags */ | |
228 | registers[39] = 0; /* fiseg */ | |
229 | registers[40] = 0; /* fioff */ | |
230 | registers[41] = 0; /* foseg */ | |
231 | registers[42] = 0; /* fooff */ | |
232 | registers[43] = 0; /* fop */ | |
233 | ||
234 | for(i = 0; i < 16; i++) | |
235 | tswapls(®isters[i]); | |
236 | for(i = 36; i < 44; i++) | |
237 | tswapls(®isters[i]); | |
6da41eaf FB |
238 | return 44 * 4; |
239 | } | |
240 | ||
241 | static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) | |
242 | { | |
243 | uint32_t *registers = (uint32_t *)mem_buf; | |
244 | int i; | |
245 | ||
246 | for(i = 0; i < 8; i++) { | |
247 | env->regs[i] = tswapl(registers[i]); | |
248 | } | |
e95c8d51 FB |
249 | env->eip = tswapl(registers[8]); |
250 | env->eflags = tswapl(registers[9]); | |
6da41eaf FB |
251 | #if defined(CONFIG_USER_ONLY) |
252 | #define LOAD_SEG(index, sreg)\ | |
253 | if (tswapl(registers[index]) != env->segs[sreg].selector)\ | |
254 | cpu_x86_load_seg(env, sreg, tswapl(registers[index])); | |
255 | LOAD_SEG(10, R_CS); | |
256 | LOAD_SEG(11, R_SS); | |
257 | LOAD_SEG(12, R_DS); | |
258 | LOAD_SEG(13, R_ES); | |
259 | LOAD_SEG(14, R_FS); | |
260 | LOAD_SEG(15, R_GS); | |
261 | #endif | |
262 | } | |
263 | ||
9e62fd7f | 264 | #elif defined (TARGET_PPC) |
9e62fd7f FB |
265 | static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) |
266 | { | |
a541f297 | 267 | uint32_t *registers = (uint32_t *)mem_buf, tmp; |
9e62fd7f FB |
268 | int i; |
269 | ||
270 | /* fill in gprs */ | |
a541f297 | 271 | for(i = 0; i < 32; i++) { |
e95c8d51 | 272 | registers[i] = tswapl(env->gpr[i]); |
9e62fd7f FB |
273 | } |
274 | /* fill in fprs */ | |
275 | for (i = 0; i < 32; i++) { | |
e95c8d51 FB |
276 | registers[(i * 2) + 32] = tswapl(*((uint32_t *)&env->fpr[i])); |
277 | registers[(i * 2) + 33] = tswapl(*((uint32_t *)&env->fpr[i] + 1)); | |
9e62fd7f FB |
278 | } |
279 | /* nip, msr, ccr, lnk, ctr, xer, mq */ | |
e95c8d51 | 280 | registers[96] = tswapl(env->nip); |
3fc6c082 | 281 | registers[97] = tswapl(do_load_msr(env)); |
9e62fd7f FB |
282 | tmp = 0; |
283 | for (i = 0; i < 8; i++) | |
a541f297 | 284 | tmp |= env->crf[i] << (32 - ((i + 1) * 4)); |
e95c8d51 FB |
285 | registers[98] = tswapl(tmp); |
286 | registers[99] = tswapl(env->lr); | |
287 | registers[100] = tswapl(env->ctr); | |
3fc6c082 | 288 | registers[101] = tswapl(do_load_xer(env)); |
e95c8d51 | 289 | registers[102] = 0; |
a541f297 FB |
290 | |
291 | return 103 * 4; | |
9e62fd7f FB |
292 | } |
293 | ||
294 | static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) | |
295 | { | |
296 | uint32_t *registers = (uint32_t *)mem_buf; | |
297 | int i; | |
298 | ||
299 | /* fill in gprs */ | |
300 | for (i = 0; i < 32; i++) { | |
e95c8d51 | 301 | env->gpr[i] = tswapl(registers[i]); |
9e62fd7f FB |
302 | } |
303 | /* fill in fprs */ | |
304 | for (i = 0; i < 32; i++) { | |
e95c8d51 FB |
305 | *((uint32_t *)&env->fpr[i]) = tswapl(registers[(i * 2) + 32]); |
306 | *((uint32_t *)&env->fpr[i] + 1) = tswapl(registers[(i * 2) + 33]); | |
9e62fd7f FB |
307 | } |
308 | /* nip, msr, ccr, lnk, ctr, xer, mq */ | |
e95c8d51 | 309 | env->nip = tswapl(registers[96]); |
3fc6c082 | 310 | do_store_msr(env, tswapl(registers[97])); |
e95c8d51 | 311 | registers[98] = tswapl(registers[98]); |
9e62fd7f | 312 | for (i = 0; i < 8; i++) |
a541f297 | 313 | env->crf[i] = (registers[98] >> (32 - ((i + 1) * 4))) & 0xF; |
e95c8d51 FB |
314 | env->lr = tswapl(registers[99]); |
315 | env->ctr = tswapl(registers[100]); | |
3fc6c082 | 316 | do_store_xer(env, tswapl(registers[101])); |
e95c8d51 FB |
317 | } |
318 | #elif defined (TARGET_SPARC) | |
319 | static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) | |
320 | { | |
3475187d | 321 | target_ulong *registers = (target_ulong *)mem_buf; |
e95c8d51 FB |
322 | int i; |
323 | ||
324 | /* fill in g0..g7 */ | |
48b2c193 | 325 | for(i = 0; i < 8; i++) { |
e95c8d51 FB |
326 | registers[i] = tswapl(env->gregs[i]); |
327 | } | |
328 | /* fill in register window */ | |
329 | for(i = 0; i < 24; i++) { | |
330 | registers[i + 8] = tswapl(env->regwptr[i]); | |
331 | } | |
9d9754a3 | 332 | #ifndef TARGET_SPARC64 |
e95c8d51 FB |
333 | /* fill in fprs */ |
334 | for (i = 0; i < 32; i++) { | |
335 | registers[i + 32] = tswapl(*((uint32_t *)&env->fpr[i])); | |
336 | } | |
337 | /* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */ | |
338 | registers[64] = tswapl(env->y); | |
3475187d FB |
339 | { |
340 | target_ulong tmp; | |
341 | ||
342 | tmp = GET_PSR(env); | |
343 | registers[65] = tswapl(tmp); | |
344 | } | |
e95c8d51 FB |
345 | registers[66] = tswapl(env->wim); |
346 | registers[67] = tswapl(env->tbr); | |
347 | registers[68] = tswapl(env->pc); | |
348 | registers[69] = tswapl(env->npc); | |
349 | registers[70] = tswapl(env->fsr); | |
350 | registers[71] = 0; /* csr */ | |
351 | registers[72] = 0; | |
3475187d FB |
352 | return 73 * sizeof(target_ulong); |
353 | #else | |
9d9754a3 FB |
354 | /* fill in fprs */ |
355 | for (i = 0; i < 64; i += 2) { | |
356 | uint64_t tmp; | |
357 | ||
358 | tmp = (uint64_t)tswap32(*((uint32_t *)&env->fpr[i])) << 32; | |
359 | tmp |= tswap32(*((uint32_t *)&env->fpr[i + 1])); | |
360 | registers[i/2 + 32] = tmp; | |
3475187d | 361 | } |
9d9754a3 FB |
362 | registers[64] = tswapl(env->pc); |
363 | registers[65] = tswapl(env->npc); | |
364 | registers[66] = tswapl(env->tstate[env->tl]); | |
365 | registers[67] = tswapl(env->fsr); | |
366 | registers[68] = tswapl(env->fprs); | |
367 | registers[69] = tswapl(env->y); | |
368 | return 70 * sizeof(target_ulong); | |
3475187d | 369 | #endif |
e95c8d51 FB |
370 | } |
371 | ||
372 | static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) | |
373 | { | |
3475187d | 374 | target_ulong *registers = (target_ulong *)mem_buf; |
e95c8d51 FB |
375 | int i; |
376 | ||
377 | /* fill in g0..g7 */ | |
378 | for(i = 0; i < 7; i++) { | |
379 | env->gregs[i] = tswapl(registers[i]); | |
380 | } | |
381 | /* fill in register window */ | |
382 | for(i = 0; i < 24; i++) { | |
3475187d | 383 | env->regwptr[i] = tswapl(registers[i + 8]); |
e95c8d51 | 384 | } |
9d9754a3 | 385 | #ifndef TARGET_SPARC64 |
e95c8d51 FB |
386 | /* fill in fprs */ |
387 | for (i = 0; i < 32; i++) { | |
388 | *((uint32_t *)&env->fpr[i]) = tswapl(registers[i + 32]); | |
389 | } | |
390 | /* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */ | |
391 | env->y = tswapl(registers[64]); | |
e80cfcfc | 392 | PUT_PSR(env, tswapl(registers[65])); |
e95c8d51 FB |
393 | env->wim = tswapl(registers[66]); |
394 | env->tbr = tswapl(registers[67]); | |
395 | env->pc = tswapl(registers[68]); | |
396 | env->npc = tswapl(registers[69]); | |
397 | env->fsr = tswapl(registers[70]); | |
3475187d | 398 | #else |
9d9754a3 FB |
399 | for (i = 0; i < 64; i += 2) { |
400 | *((uint32_t *)&env->fpr[i]) = tswap32(registers[i/2 + 32] >> 32); | |
401 | *((uint32_t *)&env->fpr[i + 1]) = tswap32(registers[i/2 + 32] & 0xffffffff); | |
3475187d | 402 | } |
9d9754a3 FB |
403 | env->pc = tswapl(registers[64]); |
404 | env->npc = tswapl(registers[65]); | |
405 | env->tstate[env->tl] = tswapl(registers[66]); | |
406 | env->fsr = tswapl(registers[67]); | |
407 | env->fprs = tswapl(registers[68]); | |
408 | env->y = tswapl(registers[69]); | |
3475187d | 409 | #endif |
9e62fd7f | 410 | } |
1fddef4b FB |
411 | #elif defined (TARGET_ARM) |
412 | static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) | |
413 | { | |
414 | int i; | |
415 | uint8_t *ptr; | |
416 | ||
417 | ptr = mem_buf; | |
418 | /* 16 core integer registers (4 bytes each). */ | |
419 | for (i = 0; i < 16; i++) | |
420 | { | |
421 | *(uint32_t *)ptr = tswapl(env->regs[i]); | |
422 | ptr += 4; | |
423 | } | |
424 | /* 8 FPA registers (12 bytes each), FPS (4 bytes). | |
425 | Not yet implemented. */ | |
426 | memset (ptr, 0, 8 * 12 + 4); | |
427 | ptr += 8 * 12 + 4; | |
428 | /* CPSR (4 bytes). */ | |
b5ff1b31 | 429 | *(uint32_t *)ptr = tswapl (cpsr_read(env)); |
1fddef4b FB |
430 | ptr += 4; |
431 | ||
432 | return ptr - mem_buf; | |
433 | } | |
6da41eaf | 434 | |
1fddef4b FB |
435 | static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) |
436 | { | |
437 | int i; | |
438 | uint8_t *ptr; | |
439 | ||
440 | ptr = mem_buf; | |
441 | /* Core integer registers. */ | |
442 | for (i = 0; i < 16; i++) | |
443 | { | |
444 | env->regs[i] = tswapl(*(uint32_t *)ptr); | |
445 | ptr += 4; | |
446 | } | |
447 | /* Ignore FPA regs and scr. */ | |
448 | ptr += 8 * 12 + 4; | |
b5ff1b31 | 449 | cpsr_write (env, tswapl(*(uint32_t *)ptr), 0xffffffff); |
1fddef4b | 450 | } |
e6e5906b PB |
451 | #elif defined (TARGET_M68K) |
452 | static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) | |
453 | { | |
454 | int i; | |
455 | uint8_t *ptr; | |
456 | CPU_DoubleU u; | |
457 | ||
458 | ptr = mem_buf; | |
459 | /* D0-D7 */ | |
460 | for (i = 0; i < 8; i++) { | |
461 | *(uint32_t *)ptr = tswapl(env->dregs[i]); | |
462 | ptr += 4; | |
463 | } | |
464 | /* A0-A7 */ | |
465 | for (i = 0; i < 8; i++) { | |
466 | *(uint32_t *)ptr = tswapl(env->aregs[i]); | |
467 | ptr += 4; | |
468 | } | |
469 | *(uint32_t *)ptr = tswapl(env->sr); | |
470 | ptr += 4; | |
471 | *(uint32_t *)ptr = tswapl(env->pc); | |
472 | ptr += 4; | |
473 | /* F0-F7. The 68881/68040 have 12-bit extended precision registers. | |
474 | ColdFire has 8-bit double precision registers. */ | |
475 | for (i = 0; i < 8; i++) { | |
476 | u.d = env->fregs[i]; | |
477 | *(uint32_t *)ptr = tswap32(u.l.upper); | |
478 | *(uint32_t *)ptr = tswap32(u.l.lower); | |
479 | } | |
480 | /* FP control regs (not implemented). */ | |
481 | memset (ptr, 0, 3 * 4); | |
482 | ptr += 3 * 4; | |
483 | ||
484 | return ptr - mem_buf; | |
485 | } | |
486 | ||
487 | static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) | |
488 | { | |
489 | int i; | |
490 | uint8_t *ptr; | |
491 | CPU_DoubleU u; | |
492 | ||
493 | ptr = mem_buf; | |
494 | /* D0-D7 */ | |
495 | for (i = 0; i < 8; i++) { | |
496 | env->dregs[i] = tswapl(*(uint32_t *)ptr); | |
497 | ptr += 4; | |
498 | } | |
499 | /* A0-A7 */ | |
500 | for (i = 0; i < 8; i++) { | |
501 | env->aregs[i] = tswapl(*(uint32_t *)ptr); | |
502 | ptr += 4; | |
503 | } | |
504 | env->sr = tswapl(*(uint32_t *)ptr); | |
505 | ptr += 4; | |
506 | env->pc = tswapl(*(uint32_t *)ptr); | |
507 | ptr += 4; | |
508 | /* F0-F7. The 68881/68040 have 12-bit extended precision registers. | |
509 | ColdFire has 8-bit double precision registers. */ | |
510 | for (i = 0; i < 8; i++) { | |
511 | u.l.upper = tswap32(*(uint32_t *)ptr); | |
512 | u.l.lower = tswap32(*(uint32_t *)ptr); | |
513 | env->fregs[i] = u.d; | |
514 | } | |
515 | /* FP control regs (not implemented). */ | |
516 | ptr += 3 * 4; | |
517 | } | |
6f970bd9 FB |
518 | #elif defined (TARGET_MIPS) |
519 | static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) | |
520 | { | |
521 | int i; | |
522 | uint8_t *ptr; | |
523 | ||
524 | ptr = mem_buf; | |
525 | for (i = 0; i < 32; i++) | |
526 | { | |
527 | *(uint32_t *)ptr = tswapl(env->gpr[i]); | |
528 | ptr += 4; | |
529 | } | |
530 | ||
531 | *(uint32_t *)ptr = tswapl(env->CP0_Status); | |
532 | ptr += 4; | |
533 | ||
534 | *(uint32_t *)ptr = tswapl(env->LO); | |
535 | ptr += 4; | |
536 | ||
537 | *(uint32_t *)ptr = tswapl(env->HI); | |
538 | ptr += 4; | |
539 | ||
540 | *(uint32_t *)ptr = tswapl(env->CP0_BadVAddr); | |
541 | ptr += 4; | |
542 | ||
543 | *(uint32_t *)ptr = tswapl(env->CP0_Cause); | |
544 | ptr += 4; | |
545 | ||
546 | *(uint32_t *)ptr = tswapl(env->PC); | |
547 | ptr += 4; | |
548 | ||
8e33c08c TS |
549 | #ifdef MIPS_USES_FPU |
550 | for (i = 0; i < 32; i++) | |
551 | { | |
552 | *(uint32_t *)ptr = tswapl(FPR_W (env, i)); | |
553 | ptr += 4; | |
554 | } | |
555 | ||
556 | *(uint32_t *)ptr = tswapl(env->fcr31); | |
557 | ptr += 4; | |
558 | ||
559 | *(uint32_t *)ptr = tswapl(env->fcr0); | |
560 | ptr += 4; | |
561 | #endif | |
562 | ||
6f970bd9 | 563 | /* 32 FP registers, fsr, fir, fp. Not yet implemented. */ |
8e33c08c | 564 | /* what's 'fp' mean here? */ |
6f970bd9 FB |
565 | |
566 | return ptr - mem_buf; | |
567 | } | |
568 | ||
8e33c08c TS |
569 | /* convert MIPS rounding mode in FCR31 to IEEE library */ |
570 | static unsigned int ieee_rm[] = | |
571 | { | |
572 | float_round_nearest_even, | |
573 | float_round_to_zero, | |
574 | float_round_up, | |
575 | float_round_down | |
576 | }; | |
577 | #define RESTORE_ROUNDING_MODE \ | |
578 | set_float_rounding_mode(ieee_rm[env->fcr31 & 3], &env->fp_status) | |
579 | ||
6f970bd9 FB |
580 | static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) |
581 | { | |
582 | int i; | |
583 | uint8_t *ptr; | |
584 | ||
585 | ptr = mem_buf; | |
586 | for (i = 0; i < 32; i++) | |
587 | { | |
588 | env->gpr[i] = tswapl(*(uint32_t *)ptr); | |
589 | ptr += 4; | |
590 | } | |
591 | ||
592 | env->CP0_Status = tswapl(*(uint32_t *)ptr); | |
593 | ptr += 4; | |
594 | ||
595 | env->LO = tswapl(*(uint32_t *)ptr); | |
596 | ptr += 4; | |
597 | ||
598 | env->HI = tswapl(*(uint32_t *)ptr); | |
599 | ptr += 4; | |
600 | ||
601 | env->CP0_BadVAddr = tswapl(*(uint32_t *)ptr); | |
602 | ptr += 4; | |
603 | ||
604 | env->CP0_Cause = tswapl(*(uint32_t *)ptr); | |
605 | ptr += 4; | |
606 | ||
607 | env->PC = tswapl(*(uint32_t *)ptr); | |
608 | ptr += 4; | |
8e33c08c TS |
609 | |
610 | #ifdef MIPS_USES_FPU | |
611 | for (i = 0; i < 32; i++) | |
612 | { | |
613 | FPR_W (env, i) = tswapl(*(uint32_t *)ptr); | |
614 | ptr += 4; | |
615 | } | |
616 | ||
617 | env->fcr31 = tswapl(*(uint32_t *)ptr) & 0x0183FFFF; | |
618 | ptr += 4; | |
619 | ||
620 | env->fcr0 = tswapl(*(uint32_t *)ptr); | |
621 | ptr += 4; | |
622 | ||
623 | /* set rounding mode */ | |
624 | RESTORE_ROUNDING_MODE; | |
625 | ||
626 | #ifndef CONFIG_SOFTFLOAT | |
627 | /* no floating point exception for native float */ | |
628 | SET_FP_ENABLE(env->fcr31, 0); | |
629 | #endif | |
630 | #endif | |
6f970bd9 | 631 | } |
fdf9b3e8 FB |
632 | #elif defined (TARGET_SH4) |
633 | static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) | |
634 | { | |
635 | uint32_t *ptr = (uint32_t *)mem_buf; | |
636 | int i; | |
637 | ||
638 | #define SAVE(x) *ptr++=tswapl(x) | |
9c2a9ea1 PB |
639 | if ((env->sr & (SR_MD | SR_RB)) == (SR_MD | SR_RB)) { |
640 | for (i = 0; i < 8; i++) SAVE(env->gregs[i + 16]); | |
641 | } else { | |
642 | for (i = 0; i < 8; i++) SAVE(env->gregs[i]); | |
643 | } | |
644 | for (i = 8; i < 16; i++) SAVE(env->gregs[i]); | |
fdf9b3e8 FB |
645 | SAVE (env->pc); |
646 | SAVE (env->pr); | |
647 | SAVE (env->gbr); | |
648 | SAVE (env->vbr); | |
649 | SAVE (env->mach); | |
650 | SAVE (env->macl); | |
651 | SAVE (env->sr); | |
652 | SAVE (0); /* TICKS */ | |
653 | SAVE (0); /* STALLS */ | |
654 | SAVE (0); /* CYCLES */ | |
655 | SAVE (0); /* INSTS */ | |
656 | SAVE (0); /* PLR */ | |
657 | ||
658 | return ((uint8_t *)ptr - mem_buf); | |
659 | } | |
660 | ||
661 | static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) | |
662 | { | |
663 | uint32_t *ptr = (uint32_t *)mem_buf; | |
664 | int i; | |
665 | ||
666 | #define LOAD(x) (x)=*ptr++; | |
9c2a9ea1 PB |
667 | if ((env->sr & (SR_MD | SR_RB)) == (SR_MD | SR_RB)) { |
668 | for (i = 0; i < 8; i++) LOAD(env->gregs[i + 16]); | |
669 | } else { | |
670 | for (i = 0; i < 8; i++) LOAD(env->gregs[i]); | |
671 | } | |
672 | for (i = 8; i < 16; i++) LOAD(env->gregs[i]); | |
fdf9b3e8 FB |
673 | LOAD (env->pc); |
674 | LOAD (env->pr); | |
675 | LOAD (env->gbr); | |
676 | LOAD (env->vbr); | |
677 | LOAD (env->mach); | |
678 | LOAD (env->macl); | |
679 | LOAD (env->sr); | |
680 | } | |
1fddef4b | 681 | #else |
6da41eaf FB |
682 | static int cpu_gdb_read_registers(CPUState *env, uint8_t *mem_buf) |
683 | { | |
684 | return 0; | |
685 | } | |
686 | ||
687 | static void cpu_gdb_write_registers(CPUState *env, uint8_t *mem_buf, int size) | |
688 | { | |
689 | } | |
690 | ||
691 | #endif | |
b4608c04 | 692 | |
1fddef4b | 693 | static int gdb_handle_packet(GDBState *s, CPUState *env, const char *line_buf) |
b4608c04 | 694 | { |
b4608c04 | 695 | const char *p; |
858693c6 | 696 | int ch, reg_size, type; |
b4608c04 FB |
697 | char buf[4096]; |
698 | uint8_t mem_buf[2000]; | |
699 | uint32_t *registers; | |
9d9754a3 | 700 | target_ulong addr, len; |
b4608c04 | 701 | |
858693c6 FB |
702 | #ifdef DEBUG_GDB |
703 | printf("command='%s'\n", line_buf); | |
704 | #endif | |
705 | p = line_buf; | |
706 | ch = *p++; | |
707 | switch(ch) { | |
708 | case '?': | |
1fddef4b | 709 | /* TODO: Make this return the correct value for user-mode. */ |
858693c6 FB |
710 | snprintf(buf, sizeof(buf), "S%02x", SIGTRAP); |
711 | put_packet(s, buf); | |
712 | break; | |
713 | case 'c': | |
714 | if (*p != '\0') { | |
9d9754a3 | 715 | addr = strtoull(p, (char **)&p, 16); |
4c3a88a2 | 716 | #if defined(TARGET_I386) |
858693c6 | 717 | env->eip = addr; |
5be1a8e0 | 718 | #elif defined (TARGET_PPC) |
858693c6 | 719 | env->nip = addr; |
8d5f07fa FB |
720 | #elif defined (TARGET_SPARC) |
721 | env->pc = addr; | |
722 | env->npc = addr + 4; | |
b5ff1b31 FB |
723 | #elif defined (TARGET_ARM) |
724 | env->regs[15] = addr; | |
fdf9b3e8 FB |
725 | #elif defined (TARGET_SH4) |
726 | env->pc = addr; | |
4c3a88a2 | 727 | #endif |
858693c6 | 728 | } |
41625033 FB |
729 | #ifdef CONFIG_USER_ONLY |
730 | s->running_state = 1; | |
731 | #else | |
732 | vm_start(); | |
733 | #endif | |
734 | return RS_IDLE; | |
858693c6 FB |
735 | case 's': |
736 | if (*p != '\0') { | |
737 | addr = strtoul(p, (char **)&p, 16); | |
c33a346e | 738 | #if defined(TARGET_I386) |
858693c6 | 739 | env->eip = addr; |
5be1a8e0 | 740 | #elif defined (TARGET_PPC) |
858693c6 | 741 | env->nip = addr; |
8d5f07fa FB |
742 | #elif defined (TARGET_SPARC) |
743 | env->pc = addr; | |
744 | env->npc = addr + 4; | |
b5ff1b31 FB |
745 | #elif defined (TARGET_ARM) |
746 | env->regs[15] = addr; | |
fdf9b3e8 FB |
747 | #elif defined (TARGET_SH4) |
748 | env->pc = addr; | |
c33a346e | 749 | #endif |
858693c6 FB |
750 | } |
751 | cpu_single_step(env, 1); | |
41625033 FB |
752 | #ifdef CONFIG_USER_ONLY |
753 | s->running_state = 1; | |
754 | #else | |
755 | vm_start(); | |
756 | #endif | |
757 | return RS_IDLE; | |
858693c6 FB |
758 | case 'g': |
759 | reg_size = cpu_gdb_read_registers(env, mem_buf); | |
760 | memtohex(buf, mem_buf, reg_size); | |
761 | put_packet(s, buf); | |
762 | break; | |
763 | case 'G': | |
764 | registers = (void *)mem_buf; | |
765 | len = strlen(p) / 2; | |
766 | hextomem((uint8_t *)registers, p, len); | |
767 | cpu_gdb_write_registers(env, mem_buf, len); | |
768 | put_packet(s, "OK"); | |
769 | break; | |
770 | case 'm': | |
9d9754a3 | 771 | addr = strtoull(p, (char **)&p, 16); |
858693c6 FB |
772 | if (*p == ',') |
773 | p++; | |
9d9754a3 | 774 | len = strtoull(p, NULL, 16); |
6f970bd9 FB |
775 | if (cpu_memory_rw_debug(env, addr, mem_buf, len, 0) != 0) { |
776 | put_packet (s, "E14"); | |
777 | } else { | |
778 | memtohex(buf, mem_buf, len); | |
779 | put_packet(s, buf); | |
780 | } | |
858693c6 FB |
781 | break; |
782 | case 'M': | |
9d9754a3 | 783 | addr = strtoull(p, (char **)&p, 16); |
858693c6 FB |
784 | if (*p == ',') |
785 | p++; | |
9d9754a3 | 786 | len = strtoull(p, (char **)&p, 16); |
b328f873 | 787 | if (*p == ':') |
858693c6 FB |
788 | p++; |
789 | hextomem(mem_buf, p, len); | |
790 | if (cpu_memory_rw_debug(env, addr, mem_buf, len, 1) != 0) | |
905f20b1 | 791 | put_packet(s, "E14"); |
858693c6 FB |
792 | else |
793 | put_packet(s, "OK"); | |
794 | break; | |
795 | case 'Z': | |
796 | type = strtoul(p, (char **)&p, 16); | |
797 | if (*p == ',') | |
798 | p++; | |
9d9754a3 | 799 | addr = strtoull(p, (char **)&p, 16); |
858693c6 FB |
800 | if (*p == ',') |
801 | p++; | |
9d9754a3 | 802 | len = strtoull(p, (char **)&p, 16); |
858693c6 FB |
803 | if (type == 0 || type == 1) { |
804 | if (cpu_breakpoint_insert(env, addr) < 0) | |
805 | goto breakpoint_error; | |
806 | put_packet(s, "OK"); | |
807 | } else { | |
808 | breakpoint_error: | |
905f20b1 | 809 | put_packet(s, "E22"); |
858693c6 FB |
810 | } |
811 | break; | |
812 | case 'z': | |
813 | type = strtoul(p, (char **)&p, 16); | |
814 | if (*p == ',') | |
815 | p++; | |
9d9754a3 | 816 | addr = strtoull(p, (char **)&p, 16); |
858693c6 FB |
817 | if (*p == ',') |
818 | p++; | |
9d9754a3 | 819 | len = strtoull(p, (char **)&p, 16); |
858693c6 FB |
820 | if (type == 0 || type == 1) { |
821 | cpu_breakpoint_remove(env, addr); | |
822 | put_packet(s, "OK"); | |
823 | } else { | |
824 | goto breakpoint_error; | |
825 | } | |
826 | break; | |
831b7825 | 827 | #ifdef CONFIG_LINUX_USER |
978efd6a PB |
828 | case 'q': |
829 | if (strncmp(p, "Offsets", 7) == 0) { | |
830 | TaskState *ts = env->opaque; | |
831 | ||
832 | sprintf(buf, "Text=%x;Data=%x;Bss=%x", ts->info->code_offset, | |
833 | ts->info->data_offset, ts->info->data_offset); | |
834 | put_packet(s, buf); | |
835 | break; | |
836 | } | |
837 | /* Fall through. */ | |
838 | #endif | |
858693c6 FB |
839 | default: |
840 | // unknown_command: | |
841 | /* put empty packet */ | |
842 | buf[0] = '\0'; | |
843 | put_packet(s, buf); | |
844 | break; | |
845 | } | |
846 | return RS_IDLE; | |
847 | } | |
848 | ||
612458f5 FB |
849 | extern void tb_flush(CPUState *env); |
850 | ||
1fddef4b | 851 | #ifndef CONFIG_USER_ONLY |
858693c6 FB |
852 | static void gdb_vm_stopped(void *opaque, int reason) |
853 | { | |
854 | GDBState *s = opaque; | |
855 | char buf[256]; | |
856 | int ret; | |
857 | ||
858 | /* disable single step if it was enable */ | |
6a00d601 | 859 | cpu_single_step(s->env, 0); |
858693c6 | 860 | |
e80cfcfc | 861 | if (reason == EXCP_DEBUG) { |
6a00d601 | 862 | tb_flush(s->env); |
858693c6 | 863 | ret = SIGTRAP; |
bbeb7b5c FB |
864 | } else if (reason == EXCP_INTERRUPT) { |
865 | ret = SIGINT; | |
866 | } else { | |
858693c6 | 867 | ret = 0; |
bbeb7b5c | 868 | } |
858693c6 FB |
869 | snprintf(buf, sizeof(buf), "S%02x", ret); |
870 | put_packet(s, buf); | |
871 | } | |
1fddef4b | 872 | #endif |
858693c6 | 873 | |
6a00d601 | 874 | static void gdb_read_byte(GDBState *s, int ch) |
858693c6 | 875 | { |
6a00d601 | 876 | CPUState *env = s->env; |
858693c6 FB |
877 | int i, csum; |
878 | char reply[1]; | |
879 | ||
1fddef4b | 880 | #ifndef CONFIG_USER_ONLY |
4046d913 PB |
881 | if (s->last_packet_len) { |
882 | /* Waiting for a response to the last packet. If we see the start | |
883 | of a new command then abandon the previous response. */ | |
884 | if (ch == '-') { | |
885 | #ifdef DEBUG_GDB | |
886 | printf("Got NACK, retransmitting\n"); | |
887 | #endif | |
888 | put_buffer(s, s->last_packet, s->last_packet_len); | |
889 | } | |
890 | #ifdef DEBUG_GDB | |
891 | else if (ch == '+') | |
892 | printf("Got ACK\n"); | |
893 | else | |
894 | printf("Got '%c' when expecting ACK/NACK\n", ch); | |
895 | #endif | |
896 | if (ch == '+' || ch == '$') | |
897 | s->last_packet_len = 0; | |
898 | if (ch != '$') | |
899 | return; | |
900 | } | |
858693c6 FB |
901 | if (vm_running) { |
902 | /* when the CPU is running, we cannot do anything except stop | |
903 | it when receiving a char */ | |
904 | vm_stop(EXCP_INTERRUPT); | |
41625033 | 905 | } else |
1fddef4b | 906 | #endif |
41625033 | 907 | { |
858693c6 FB |
908 | switch(s->state) { |
909 | case RS_IDLE: | |
910 | if (ch == '$') { | |
911 | s->line_buf_index = 0; | |
912 | s->state = RS_GETLINE; | |
c33a346e | 913 | } |
b4608c04 | 914 | break; |
858693c6 FB |
915 | case RS_GETLINE: |
916 | if (ch == '#') { | |
917 | s->state = RS_CHKSUM1; | |
918 | } else if (s->line_buf_index >= sizeof(s->line_buf) - 1) { | |
919 | s->state = RS_IDLE; | |
4c3a88a2 | 920 | } else { |
858693c6 | 921 | s->line_buf[s->line_buf_index++] = ch; |
4c3a88a2 FB |
922 | } |
923 | break; | |
858693c6 FB |
924 | case RS_CHKSUM1: |
925 | s->line_buf[s->line_buf_index] = '\0'; | |
926 | s->line_csum = fromhex(ch) << 4; | |
927 | s->state = RS_CHKSUM2; | |
928 | break; | |
929 | case RS_CHKSUM2: | |
930 | s->line_csum |= fromhex(ch); | |
931 | csum = 0; | |
932 | for(i = 0; i < s->line_buf_index; i++) { | |
933 | csum += s->line_buf[i]; | |
934 | } | |
935 | if (s->line_csum != (csum & 0xff)) { | |
936 | reply[0] = '-'; | |
937 | put_buffer(s, reply, 1); | |
938 | s->state = RS_IDLE; | |
4c3a88a2 | 939 | } else { |
858693c6 FB |
940 | reply[0] = '+'; |
941 | put_buffer(s, reply, 1); | |
1fddef4b | 942 | s->state = gdb_handle_packet(s, env, s->line_buf); |
4c3a88a2 FB |
943 | } |
944 | break; | |
858693c6 FB |
945 | } |
946 | } | |
947 | } | |
948 | ||
1fddef4b FB |
949 | #ifdef CONFIG_USER_ONLY |
950 | int | |
951 | gdb_handlesig (CPUState *env, int sig) | |
952 | { | |
953 | GDBState *s; | |
954 | char buf[256]; | |
955 | int n; | |
956 | ||
957 | if (gdbserver_fd < 0) | |
958 | return sig; | |
959 | ||
960 | s = &gdbserver_state; | |
961 | ||
962 | /* disable single step if it was enabled */ | |
963 | cpu_single_step(env, 0); | |
964 | tb_flush(env); | |
965 | ||
966 | if (sig != 0) | |
967 | { | |
968 | snprintf(buf, sizeof(buf), "S%02x", sig); | |
969 | put_packet(s, buf); | |
970 | } | |
971 | ||
1fddef4b FB |
972 | sig = 0; |
973 | s->state = RS_IDLE; | |
41625033 FB |
974 | s->running_state = 0; |
975 | while (s->running_state == 0) { | |
1fddef4b FB |
976 | n = read (s->fd, buf, 256); |
977 | if (n > 0) | |
978 | { | |
979 | int i; | |
980 | ||
981 | for (i = 0; i < n; i++) | |
6a00d601 | 982 | gdb_read_byte (s, buf[i]); |
1fddef4b FB |
983 | } |
984 | else if (n == 0 || errno != EAGAIN) | |
985 | { | |
986 | /* XXX: Connection closed. Should probably wait for annother | |
987 | connection before continuing. */ | |
988 | return sig; | |
989 | } | |
41625033 | 990 | } |
1fddef4b FB |
991 | return sig; |
992 | } | |
e9009676 FB |
993 | |
994 | /* Tell the remote gdb that the process has exited. */ | |
995 | void gdb_exit(CPUState *env, int code) | |
996 | { | |
997 | GDBState *s; | |
998 | char buf[4]; | |
999 | ||
1000 | if (gdbserver_fd < 0) | |
1001 | return; | |
1002 | ||
1003 | s = &gdbserver_state; | |
1004 | ||
1005 | snprintf(buf, sizeof(buf), "W%02x", code); | |
1006 | put_packet(s, buf); | |
1007 | } | |
1008 | ||
1fddef4b | 1009 | |
7c9d8e07 | 1010 | static void gdb_accept(void *opaque) |
858693c6 FB |
1011 | { |
1012 | GDBState *s; | |
1013 | struct sockaddr_in sockaddr; | |
1014 | socklen_t len; | |
1015 | int val, fd; | |
1016 | ||
1017 | for(;;) { | |
1018 | len = sizeof(sockaddr); | |
1019 | fd = accept(gdbserver_fd, (struct sockaddr *)&sockaddr, &len); | |
1020 | if (fd < 0 && errno != EINTR) { | |
1021 | perror("accept"); | |
1022 | return; | |
1023 | } else if (fd >= 0) { | |
b4608c04 FB |
1024 | break; |
1025 | } | |
1026 | } | |
858693c6 FB |
1027 | |
1028 | /* set short latency */ | |
1029 | val = 1; | |
8f447cc7 | 1030 | setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val)); |
858693c6 | 1031 | |
1fddef4b FB |
1032 | s = &gdbserver_state; |
1033 | memset (s, 0, sizeof (GDBState)); | |
6a00d601 | 1034 | s->env = first_cpu; /* XXX: allow to change CPU */ |
858693c6 FB |
1035 | s->fd = fd; |
1036 | ||
1037 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
858693c6 FB |
1038 | } |
1039 | ||
1040 | static int gdbserver_open(int port) | |
1041 | { | |
1042 | struct sockaddr_in sockaddr; | |
1043 | int fd, val, ret; | |
1044 | ||
1045 | fd = socket(PF_INET, SOCK_STREAM, 0); | |
1046 | if (fd < 0) { | |
1047 | perror("socket"); | |
1048 | return -1; | |
1049 | } | |
1050 | ||
1051 | /* allow fast reuse */ | |
1052 | val = 1; | |
8f447cc7 | 1053 | setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&val, sizeof(val)); |
858693c6 FB |
1054 | |
1055 | sockaddr.sin_family = AF_INET; | |
1056 | sockaddr.sin_port = htons(port); | |
1057 | sockaddr.sin_addr.s_addr = 0; | |
1058 | ret = bind(fd, (struct sockaddr *)&sockaddr, sizeof(sockaddr)); | |
1059 | if (ret < 0) { | |
1060 | perror("bind"); | |
1061 | return -1; | |
1062 | } | |
1063 | ret = listen(fd, 0); | |
1064 | if (ret < 0) { | |
1065 | perror("listen"); | |
1066 | return -1; | |
1067 | } | |
858693c6 FB |
1068 | return fd; |
1069 | } | |
1070 | ||
1071 | int gdbserver_start(int port) | |
1072 | { | |
1073 | gdbserver_fd = gdbserver_open(port); | |
1074 | if (gdbserver_fd < 0) | |
1075 | return -1; | |
1076 | /* accept connections */ | |
7c9d8e07 | 1077 | gdb_accept (NULL); |
4046d913 PB |
1078 | return 0; |
1079 | } | |
1fddef4b | 1080 | #else |
4046d913 PB |
1081 | static int gdb_chr_can_recieve(void *opaque) |
1082 | { | |
1083 | return 1; | |
1084 | } | |
1085 | ||
1086 | static void gdb_chr_recieve(void *opaque, const uint8_t *buf, int size) | |
1087 | { | |
1088 | GDBState *s = opaque; | |
1089 | int i; | |
1090 | ||
1091 | for (i = 0; i < size; i++) { | |
1092 | gdb_read_byte(s, buf[i]); | |
1093 | } | |
1094 | } | |
1095 | ||
1096 | static void gdb_chr_event(void *opaque, int event) | |
1097 | { | |
1098 | switch (event) { | |
1099 | case CHR_EVENT_RESET: | |
1100 | vm_stop(EXCP_INTERRUPT); | |
1101 | break; | |
1102 | default: | |
1103 | break; | |
1104 | } | |
1105 | } | |
1106 | ||
1107 | int gdbserver_start(CharDriverState *chr) | |
1108 | { | |
1109 | GDBState *s; | |
1110 | ||
1111 | if (!chr) | |
1112 | return -1; | |
1113 | ||
1114 | s = qemu_mallocz(sizeof(GDBState)); | |
1115 | if (!s) { | |
1116 | return -1; | |
1117 | } | |
1118 | s->env = first_cpu; /* XXX: allow to change CPU */ | |
1119 | s->chr = chr; | |
1120 | qemu_chr_add_handlers(chr, gdb_chr_can_recieve, gdb_chr_recieve, | |
1121 | gdb_chr_event, s); | |
1122 | qemu_add_vm_stop_handler(gdb_vm_stopped, s); | |
b4608c04 FB |
1123 | return 0; |
1124 | } | |
4046d913 | 1125 | #endif |