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1 | /* | |
2 | * gdb server stub | |
3 | * | |
4 | * Copyright (c) 2003-2005 Fabrice Bellard | |
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 | */ | |
20 | #include "config.h" | |
21 | #include "qemu-common.h" | |
22 | #ifdef CONFIG_USER_ONLY | |
23 | #include <stdlib.h> | |
24 | #include <stdio.h> | |
25 | #include <stdarg.h> | |
26 | #include <string.h> | |
27 | #include <errno.h> | |
28 | #include <unistd.h> | |
29 | #include <fcntl.h> | |
30 | ||
31 | #include "qemu.h" | |
32 | #else | |
33 | #include "qemu-char.h" | |
34 | #include "sysemu.h" | |
35 | #include "gdbstub.h" | |
36 | #endif | |
37 | ||
38 | #define MAX_PACKET_LENGTH 4096 | |
39 | ||
40 | #include "qemu_socket.h" | |
41 | ||
42 | ||
43 | enum { | |
44 | GDB_SIGNAL_0 = 0, | |
45 | GDB_SIGNAL_INT = 2, | |
46 | GDB_SIGNAL_TRAP = 5, | |
47 | GDB_SIGNAL_UNKNOWN = 143 | |
48 | }; | |
49 | ||
50 | #ifdef CONFIG_USER_ONLY | |
51 | ||
52 | /* Map target signal numbers to GDB protocol signal numbers and vice | |
53 | * versa. For user emulation's currently supported systems, we can | |
54 | * assume most signals are defined. | |
55 | */ | |
56 | ||
57 | static int gdb_signal_table[] = { | |
58 | 0, | |
59 | TARGET_SIGHUP, | |
60 | TARGET_SIGINT, | |
61 | TARGET_SIGQUIT, | |
62 | TARGET_SIGILL, | |
63 | TARGET_SIGTRAP, | |
64 | TARGET_SIGABRT, | |
65 | -1, /* SIGEMT */ | |
66 | TARGET_SIGFPE, | |
67 | TARGET_SIGKILL, | |
68 | TARGET_SIGBUS, | |
69 | TARGET_SIGSEGV, | |
70 | TARGET_SIGSYS, | |
71 | TARGET_SIGPIPE, | |
72 | TARGET_SIGALRM, | |
73 | TARGET_SIGTERM, | |
74 | TARGET_SIGURG, | |
75 | TARGET_SIGSTOP, | |
76 | TARGET_SIGTSTP, | |
77 | TARGET_SIGCONT, | |
78 | TARGET_SIGCHLD, | |
79 | TARGET_SIGTTIN, | |
80 | TARGET_SIGTTOU, | |
81 | TARGET_SIGIO, | |
82 | TARGET_SIGXCPU, | |
83 | TARGET_SIGXFSZ, | |
84 | TARGET_SIGVTALRM, | |
85 | TARGET_SIGPROF, | |
86 | TARGET_SIGWINCH, | |
87 | -1, /* SIGLOST */ | |
88 | TARGET_SIGUSR1, | |
89 | TARGET_SIGUSR2, | |
90 | TARGET_SIGPWR, | |
91 | -1, /* SIGPOLL */ | |
92 | -1, | |
93 | -1, | |
94 | -1, | |
95 | -1, | |
96 | -1, | |
97 | -1, | |
98 | -1, | |
99 | -1, | |
100 | -1, | |
101 | -1, | |
102 | -1, | |
103 | __SIGRTMIN + 1, | |
104 | __SIGRTMIN + 2, | |
105 | __SIGRTMIN + 3, | |
106 | __SIGRTMIN + 4, | |
107 | __SIGRTMIN + 5, | |
108 | __SIGRTMIN + 6, | |
109 | __SIGRTMIN + 7, | |
110 | __SIGRTMIN + 8, | |
111 | __SIGRTMIN + 9, | |
112 | __SIGRTMIN + 10, | |
113 | __SIGRTMIN + 11, | |
114 | __SIGRTMIN + 12, | |
115 | __SIGRTMIN + 13, | |
116 | __SIGRTMIN + 14, | |
117 | __SIGRTMIN + 15, | |
118 | __SIGRTMIN + 16, | |
119 | __SIGRTMIN + 17, | |
120 | __SIGRTMIN + 18, | |
121 | __SIGRTMIN + 19, | |
122 | __SIGRTMIN + 20, | |
123 | __SIGRTMIN + 21, | |
124 | __SIGRTMIN + 22, | |
125 | __SIGRTMIN + 23, | |
126 | __SIGRTMIN + 24, | |
127 | __SIGRTMIN + 25, | |
128 | __SIGRTMIN + 26, | |
129 | __SIGRTMIN + 27, | |
130 | __SIGRTMIN + 28, | |
131 | __SIGRTMIN + 29, | |
132 | __SIGRTMIN + 30, | |
133 | __SIGRTMIN + 31, | |
134 | -1, /* SIGCANCEL */ | |
135 | __SIGRTMIN, | |
136 | __SIGRTMIN + 32, | |
137 | __SIGRTMIN + 33, | |
138 | __SIGRTMIN + 34, | |
139 | __SIGRTMIN + 35, | |
140 | __SIGRTMIN + 36, | |
141 | __SIGRTMIN + 37, | |
142 | __SIGRTMIN + 38, | |
143 | __SIGRTMIN + 39, | |
144 | __SIGRTMIN + 40, | |
145 | __SIGRTMIN + 41, | |
146 | __SIGRTMIN + 42, | |
147 | __SIGRTMIN + 43, | |
148 | __SIGRTMIN + 44, | |
149 | __SIGRTMIN + 45, | |
150 | __SIGRTMIN + 46, | |
151 | __SIGRTMIN + 47, | |
152 | __SIGRTMIN + 48, | |
153 | __SIGRTMIN + 49, | |
154 | __SIGRTMIN + 50, | |
155 | __SIGRTMIN + 51, | |
156 | __SIGRTMIN + 52, | |
157 | __SIGRTMIN + 53, | |
158 | __SIGRTMIN + 54, | |
159 | __SIGRTMIN + 55, | |
160 | __SIGRTMIN + 56, | |
161 | __SIGRTMIN + 57, | |
162 | __SIGRTMIN + 58, | |
163 | __SIGRTMIN + 59, | |
164 | __SIGRTMIN + 60, | |
165 | __SIGRTMIN + 61, | |
166 | __SIGRTMIN + 62, | |
167 | __SIGRTMIN + 63, | |
168 | __SIGRTMIN + 64, | |
169 | __SIGRTMIN + 65, | |
170 | __SIGRTMIN + 66, | |
171 | __SIGRTMIN + 67, | |
172 | __SIGRTMIN + 68, | |
173 | __SIGRTMIN + 69, | |
174 | __SIGRTMIN + 70, | |
175 | __SIGRTMIN + 71, | |
176 | __SIGRTMIN + 72, | |
177 | __SIGRTMIN + 73, | |
178 | __SIGRTMIN + 74, | |
179 | __SIGRTMIN + 75, | |
180 | __SIGRTMIN + 76, | |
181 | __SIGRTMIN + 77, | |
182 | __SIGRTMIN + 78, | |
183 | __SIGRTMIN + 79, | |
184 | __SIGRTMIN + 80, | |
185 | __SIGRTMIN + 81, | |
186 | __SIGRTMIN + 82, | |
187 | __SIGRTMIN + 83, | |
188 | __SIGRTMIN + 84, | |
189 | __SIGRTMIN + 85, | |
190 | __SIGRTMIN + 86, | |
191 | __SIGRTMIN + 87, | |
192 | __SIGRTMIN + 88, | |
193 | __SIGRTMIN + 89, | |
194 | __SIGRTMIN + 90, | |
195 | __SIGRTMIN + 91, | |
196 | __SIGRTMIN + 92, | |
197 | __SIGRTMIN + 93, | |
198 | __SIGRTMIN + 94, | |
199 | __SIGRTMIN + 95, | |
200 | -1, /* SIGINFO */ | |
201 | -1, /* UNKNOWN */ | |
202 | -1, /* DEFAULT */ | |
203 | -1, | |
204 | -1, | |
205 | -1, | |
206 | -1, | |
207 | -1, | |
208 | -1 | |
209 | }; | |
210 | #else | |
211 | /* In system mode we only need SIGINT and SIGTRAP; other signals | |
212 | are not yet supported. */ | |
213 | ||
214 | enum { | |
215 | TARGET_SIGINT = 2, | |
216 | TARGET_SIGTRAP = 5 | |
217 | }; | |
218 | ||
219 | static int gdb_signal_table[] = { | |
220 | -1, | |
221 | -1, | |
222 | TARGET_SIGINT, | |
223 | -1, | |
224 | -1, | |
225 | TARGET_SIGTRAP | |
226 | }; | |
227 | #endif | |
228 | ||
229 | #ifdef CONFIG_USER_ONLY | |
230 | static int target_signal_to_gdb (int sig) | |
231 | { | |
232 | int i; | |
233 | for (i = 0; i < ARRAY_SIZE (gdb_signal_table); i++) | |
234 | if (gdb_signal_table[i] == sig) | |
235 | return i; | |
236 | return GDB_SIGNAL_UNKNOWN; | |
237 | } | |
238 | #endif | |
239 | ||
240 | static int gdb_signal_to_target (int sig) | |
241 | { | |
242 | if (sig < ARRAY_SIZE (gdb_signal_table)) | |
243 | return gdb_signal_table[sig]; | |
244 | else | |
245 | return -1; | |
246 | } | |
247 | ||
248 | //#define DEBUG_GDB | |
249 | ||
250 | typedef struct GDBRegisterState { | |
251 | int base_reg; | |
252 | int num_regs; | |
253 | gdb_reg_cb get_reg; | |
254 | gdb_reg_cb set_reg; | |
255 | const char *xml; | |
256 | struct GDBRegisterState *next; | |
257 | } GDBRegisterState; | |
258 | ||
259 | enum RSState { | |
260 | RS_IDLE, | |
261 | RS_GETLINE, | |
262 | RS_CHKSUM1, | |
263 | RS_CHKSUM2, | |
264 | RS_SYSCALL, | |
265 | }; | |
266 | typedef struct GDBState { | |
267 | CPUState *c_cpu; /* current CPU for step/continue ops */ | |
268 | CPUState *g_cpu; /* current CPU for other ops */ | |
269 | CPUState *query_cpu; /* for q{f|s}ThreadInfo */ | |
270 | enum RSState state; /* parsing state */ | |
271 | char line_buf[MAX_PACKET_LENGTH]; | |
272 | int line_buf_index; | |
273 | int line_csum; | |
274 | uint8_t last_packet[MAX_PACKET_LENGTH + 4]; | |
275 | int last_packet_len; | |
276 | int signal; | |
277 | #ifdef CONFIG_USER_ONLY | |
278 | int fd; | |
279 | int running_state; | |
280 | #else | |
281 | CharDriverState *chr; | |
282 | #endif | |
283 | } GDBState; | |
284 | ||
285 | /* By default use no IRQs and no timers while single stepping so as to | |
286 | * make single stepping like an ICE HW step. | |
287 | */ | |
288 | static int sstep_flags = SSTEP_ENABLE|SSTEP_NOIRQ|SSTEP_NOTIMER; | |
289 | ||
290 | static GDBState *gdbserver_state; | |
291 | ||
292 | /* This is an ugly hack to cope with both new and old gdb. | |
293 | If gdb sends qXfer:features:read then assume we're talking to a newish | |
294 | gdb that understands target descriptions. */ | |
295 | static int gdb_has_xml; | |
296 | ||
297 | #ifdef CONFIG_USER_ONLY | |
298 | /* XXX: This is not thread safe. Do we care? */ | |
299 | static int gdbserver_fd = -1; | |
300 | ||
301 | static int get_char(GDBState *s) | |
302 | { | |
303 | uint8_t ch; | |
304 | int ret; | |
305 | ||
306 | for(;;) { | |
307 | ret = recv(s->fd, &ch, 1, 0); | |
308 | if (ret < 0) { | |
309 | if (errno == ECONNRESET) | |
310 | s->fd = -1; | |
311 | if (errno != EINTR && errno != EAGAIN) | |
312 | return -1; | |
313 | } else if (ret == 0) { | |
314 | close(s->fd); | |
315 | s->fd = -1; | |
316 | return -1; | |
317 | } else { | |
318 | break; | |
319 | } | |
320 | } | |
321 | return ch; | |
322 | } | |
323 | #endif | |
324 | ||
325 | static gdb_syscall_complete_cb gdb_current_syscall_cb; | |
326 | ||
327 | enum { | |
328 | GDB_SYS_UNKNOWN, | |
329 | GDB_SYS_ENABLED, | |
330 | GDB_SYS_DISABLED, | |
331 | } gdb_syscall_mode; | |
332 | ||
333 | /* If gdb is connected when the first semihosting syscall occurs then use | |
334 | remote gdb syscalls. Otherwise use native file IO. */ | |
335 | int use_gdb_syscalls(void) | |
336 | { | |
337 | if (gdb_syscall_mode == GDB_SYS_UNKNOWN) { | |
338 | gdb_syscall_mode = (gdbserver_state ? GDB_SYS_ENABLED | |
339 | : GDB_SYS_DISABLED); | |
340 | } | |
341 | return gdb_syscall_mode == GDB_SYS_ENABLED; | |
342 | } | |
343 | ||
344 | /* Resume execution. */ | |
345 | static inline void gdb_continue(GDBState *s) | |
346 | { | |
347 | #ifdef CONFIG_USER_ONLY | |
348 | s->running_state = 1; | |
349 | #else | |
350 | vm_start(); | |
351 | #endif | |
352 | } | |
353 | ||
354 | static void put_buffer(GDBState *s, const uint8_t *buf, int len) | |
355 | { | |
356 | #ifdef CONFIG_USER_ONLY | |
357 | int ret; | |
358 | ||
359 | while (len > 0) { | |
360 | ret = send(s->fd, buf, len, 0); | |
361 | if (ret < 0) { | |
362 | if (errno != EINTR && errno != EAGAIN) | |
363 | return; | |
364 | } else { | |
365 | buf += ret; | |
366 | len -= ret; | |
367 | } | |
368 | } | |
369 | #else | |
370 | qemu_chr_write(s->chr, buf, len); | |
371 | #endif | |
372 | } | |
373 | ||
374 | static inline int fromhex(int v) | |
375 | { | |
376 | if (v >= '0' && v <= '9') | |
377 | return v - '0'; | |
378 | else if (v >= 'A' && v <= 'F') | |
379 | return v - 'A' + 10; | |
380 | else if (v >= 'a' && v <= 'f') | |
381 | return v - 'a' + 10; | |
382 | else | |
383 | return 0; | |
384 | } | |
385 | ||
386 | static inline int tohex(int v) | |
387 | { | |
388 | if (v < 10) | |
389 | return v + '0'; | |
390 | else | |
391 | return v - 10 + 'a'; | |
392 | } | |
393 | ||
394 | static void memtohex(char *buf, const uint8_t *mem, int len) | |
395 | { | |
396 | int i, c; | |
397 | char *q; | |
398 | q = buf; | |
399 | for(i = 0; i < len; i++) { | |
400 | c = mem[i]; | |
401 | *q++ = tohex(c >> 4); | |
402 | *q++ = tohex(c & 0xf); | |
403 | } | |
404 | *q = '\0'; | |
405 | } | |
406 | ||
407 | static void hextomem(uint8_t *mem, const char *buf, int len) | |
408 | { | |
409 | int i; | |
410 | ||
411 | for(i = 0; i < len; i++) { | |
412 | mem[i] = (fromhex(buf[0]) << 4) | fromhex(buf[1]); | |
413 | buf += 2; | |
414 | } | |
415 | } | |
416 | ||
417 | /* return -1 if error, 0 if OK */ | |
418 | static int put_packet_binary(GDBState *s, const char *buf, int len) | |
419 | { | |
420 | int csum, i; | |
421 | uint8_t *p; | |
422 | ||
423 | for(;;) { | |
424 | p = s->last_packet; | |
425 | *(p++) = '$'; | |
426 | memcpy(p, buf, len); | |
427 | p += len; | |
428 | csum = 0; | |
429 | for(i = 0; i < len; i++) { | |
430 | csum += buf[i]; | |
431 | } | |
432 | *(p++) = '#'; | |
433 | *(p++) = tohex((csum >> 4) & 0xf); | |
434 | *(p++) = tohex((csum) & 0xf); | |
435 | ||
436 | s->last_packet_len = p - s->last_packet; | |
437 | put_buffer(s, (uint8_t *)s->last_packet, s->last_packet_len); | |
438 | ||
439 | #ifdef CONFIG_USER_ONLY | |
440 | i = get_char(s); | |
441 | if (i < 0) | |
442 | return -1; | |
443 | if (i == '+') | |
444 | break; | |
445 | #else | |
446 | break; | |
447 | #endif | |
448 | } | |
449 | return 0; | |
450 | } | |
451 | ||
452 | /* return -1 if error, 0 if OK */ | |
453 | static int put_packet(GDBState *s, const char *buf) | |
454 | { | |
455 | #ifdef DEBUG_GDB | |
456 | printf("reply='%s'\n", buf); | |
457 | #endif | |
458 | ||
459 | return put_packet_binary(s, buf, strlen(buf)); | |
460 | } | |
461 | ||
462 | /* The GDB remote protocol transfers values in target byte order. This means | |
463 | we can use the raw memory access routines to access the value buffer. | |
464 | Conveniently, these also handle the case where the buffer is mis-aligned. | |
465 | */ | |
466 | #define GET_REG8(val) do { \ | |
467 | stb_p(mem_buf, val); \ | |
468 | return 1; \ | |
469 | } while(0) | |
470 | #define GET_REG16(val) do { \ | |
471 | stw_p(mem_buf, val); \ | |
472 | return 2; \ | |
473 | } while(0) | |
474 | #define GET_REG32(val) do { \ | |
475 | stl_p(mem_buf, val); \ | |
476 | return 4; \ | |
477 | } while(0) | |
478 | #define GET_REG64(val) do { \ | |
479 | stq_p(mem_buf, val); \ | |
480 | return 8; \ | |
481 | } while(0) | |
482 | ||
483 | #if TARGET_LONG_BITS == 64 | |
484 | #define GET_REGL(val) GET_REG64(val) | |
485 | #define ldtul_p(addr) ldq_p(addr) | |
486 | #else | |
487 | #define GET_REGL(val) GET_REG32(val) | |
488 | #define ldtul_p(addr) ldl_p(addr) | |
489 | #endif | |
490 | ||
491 | #if defined(TARGET_I386) | |
492 | ||
493 | #ifdef TARGET_X86_64 | |
494 | static const int gpr_map[16] = { | |
495 | R_EAX, R_EBX, R_ECX, R_EDX, R_ESI, R_EDI, R_EBP, R_ESP, | |
496 | 8, 9, 10, 11, 12, 13, 14, 15 | |
497 | }; | |
498 | #else | |
499 | static const int gpr_map[8] = {0, 1, 2, 3, 4, 5, 6, 7}; | |
500 | #endif | |
501 | ||
502 | #define NUM_CORE_REGS (CPU_NB_REGS * 2 + 25) | |
503 | ||
504 | static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) | |
505 | { | |
506 | if (n < CPU_NB_REGS) { | |
507 | GET_REGL(env->regs[gpr_map[n]]); | |
508 | } else if (n >= CPU_NB_REGS + 8 && n < CPU_NB_REGS + 16) { | |
509 | /* FIXME: byteswap float values. */ | |
510 | #ifdef USE_X86LDOUBLE | |
511 | memcpy(mem_buf, &env->fpregs[n - (CPU_NB_REGS + 8)], 10); | |
512 | #else | |
513 | memset(mem_buf, 0, 10); | |
514 | #endif | |
515 | return 10; | |
516 | } else if (n >= CPU_NB_REGS + 24) { | |
517 | n -= CPU_NB_REGS + 24; | |
518 | if (n < CPU_NB_REGS) { | |
519 | stq_p(mem_buf, env->xmm_regs[n].XMM_Q(0)); | |
520 | stq_p(mem_buf + 8, env->xmm_regs[n].XMM_Q(1)); | |
521 | return 16; | |
522 | } else if (n == CPU_NB_REGS) { | |
523 | GET_REG32(env->mxcsr); | |
524 | } | |
525 | } else { | |
526 | n -= CPU_NB_REGS; | |
527 | switch (n) { | |
528 | case 0: GET_REGL(env->eip); | |
529 | case 1: GET_REG32(env->eflags); | |
530 | case 2: GET_REG32(env->segs[R_CS].selector); | |
531 | case 3: GET_REG32(env->segs[R_SS].selector); | |
532 | case 4: GET_REG32(env->segs[R_DS].selector); | |
533 | case 5: GET_REG32(env->segs[R_ES].selector); | |
534 | case 6: GET_REG32(env->segs[R_FS].selector); | |
535 | case 7: GET_REG32(env->segs[R_GS].selector); | |
536 | /* 8...15 x87 regs. */ | |
537 | case 16: GET_REG32(env->fpuc); | |
538 | case 17: GET_REG32((env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11); | |
539 | case 18: GET_REG32(0); /* ftag */ | |
540 | case 19: GET_REG32(0); /* fiseg */ | |
541 | case 20: GET_REG32(0); /* fioff */ | |
542 | case 21: GET_REG32(0); /* foseg */ | |
543 | case 22: GET_REG32(0); /* fooff */ | |
544 | case 23: GET_REG32(0); /* fop */ | |
545 | /* 24+ xmm regs. */ | |
546 | } | |
547 | } | |
548 | return 0; | |
549 | } | |
550 | ||
551 | static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int i) | |
552 | { | |
553 | uint32_t tmp; | |
554 | ||
555 | if (i < CPU_NB_REGS) { | |
556 | env->regs[gpr_map[i]] = ldtul_p(mem_buf); | |
557 | return sizeof(target_ulong); | |
558 | } else if (i >= CPU_NB_REGS + 8 && i < CPU_NB_REGS + 16) { | |
559 | i -= CPU_NB_REGS + 8; | |
560 | #ifdef USE_X86LDOUBLE | |
561 | memcpy(&env->fpregs[i], mem_buf, 10); | |
562 | #endif | |
563 | return 10; | |
564 | } else if (i >= CPU_NB_REGS + 24) { | |
565 | i -= CPU_NB_REGS + 24; | |
566 | if (i < CPU_NB_REGS) { | |
567 | env->xmm_regs[i].XMM_Q(0) = ldq_p(mem_buf); | |
568 | env->xmm_regs[i].XMM_Q(1) = ldq_p(mem_buf + 8); | |
569 | return 16; | |
570 | } else if (i == CPU_NB_REGS) { | |
571 | env->mxcsr = ldl_p(mem_buf); | |
572 | return 4; | |
573 | } | |
574 | } else { | |
575 | i -= CPU_NB_REGS; | |
576 | switch (i) { | |
577 | case 0: env->eip = ldtul_p(mem_buf); return sizeof(target_ulong); | |
578 | case 1: env->eflags = ldl_p(mem_buf); return 4; | |
579 | #if defined(CONFIG_USER_ONLY) | |
580 | #define LOAD_SEG(index, sreg)\ | |
581 | tmp = ldl_p(mem_buf);\ | |
582 | if (tmp != env->segs[sreg].selector)\ | |
583 | cpu_x86_load_seg(env, sreg, tmp); | |
584 | #else | |
585 | /* FIXME: Honor segment registers. Needs to avoid raising an exception | |
586 | when the selector is invalid. */ | |
587 | #define LOAD_SEG(index, sreg) do {} while(0) | |
588 | #endif | |
589 | case 2: LOAD_SEG(10, R_CS); return 4; | |
590 | case 3: LOAD_SEG(11, R_SS); return 4; | |
591 | case 4: LOAD_SEG(12, R_DS); return 4; | |
592 | case 5: LOAD_SEG(13, R_ES); return 4; | |
593 | case 6: LOAD_SEG(14, R_FS); return 4; | |
594 | case 7: LOAD_SEG(15, R_GS); return 4; | |
595 | /* 8...15 x87 regs. */ | |
596 | case 16: env->fpuc = ldl_p(mem_buf); return 4; | |
597 | case 17: | |
598 | tmp = ldl_p(mem_buf); | |
599 | env->fpstt = (tmp >> 11) & 7; | |
600 | env->fpus = tmp & ~0x3800; | |
601 | return 4; | |
602 | case 18: /* ftag */ return 4; | |
603 | case 19: /* fiseg */ return 4; | |
604 | case 20: /* fioff */ return 4; | |
605 | case 21: /* foseg */ return 4; | |
606 | case 22: /* fooff */ return 4; | |
607 | case 23: /* fop */ return 4; | |
608 | /* 24+ xmm regs. */ | |
609 | } | |
610 | } | |
611 | /* Unrecognised register. */ | |
612 | return 0; | |
613 | } | |
614 | ||
615 | #elif defined (TARGET_PPC) | |
616 | ||
617 | #define NUM_CORE_REGS 71 | |
618 | ||
619 | static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) | |
620 | { | |
621 | if (n < 32) { | |
622 | /* gprs */ | |
623 | GET_REGL(env->gpr[n]); | |
624 | } else if (n < 64) { | |
625 | /* fprs */ | |
626 | stfq_p(mem_buf, env->fpr[n-32]); | |
627 | return 8; | |
628 | } else { | |
629 | switch (n) { | |
630 | case 64: GET_REGL(env->nip); | |
631 | case 65: GET_REGL(env->msr); | |
632 | case 66: | |
633 | { | |
634 | uint32_t cr = 0; | |
635 | int i; | |
636 | for (i = 0; i < 8; i++) | |
637 | cr |= env->crf[i] << (32 - ((i + 1) * 4)); | |
638 | GET_REG32(cr); | |
639 | } | |
640 | case 67: GET_REGL(env->lr); | |
641 | case 68: GET_REGL(env->ctr); | |
642 | case 69: GET_REGL(env->xer); | |
643 | case 70: GET_REG32(0); /* fpscr */ | |
644 | } | |
645 | } | |
646 | return 0; | |
647 | } | |
648 | ||
649 | static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) | |
650 | { | |
651 | if (n < 32) { | |
652 | /* gprs */ | |
653 | env->gpr[n] = ldtul_p(mem_buf); | |
654 | return sizeof(target_ulong); | |
655 | } else if (n < 64) { | |
656 | /* fprs */ | |
657 | env->fpr[n-32] = ldfq_p(mem_buf); | |
658 | return 8; | |
659 | } else { | |
660 | switch (n) { | |
661 | case 64: | |
662 | env->nip = ldtul_p(mem_buf); | |
663 | return sizeof(target_ulong); | |
664 | case 65: | |
665 | ppc_store_msr(env, ldtul_p(mem_buf)); | |
666 | return sizeof(target_ulong); | |
667 | case 66: | |
668 | { | |
669 | uint32_t cr = ldl_p(mem_buf); | |
670 | int i; | |
671 | for (i = 0; i < 8; i++) | |
672 | env->crf[i] = (cr >> (32 - ((i + 1) * 4))) & 0xF; | |
673 | return 4; | |
674 | } | |
675 | case 67: | |
676 | env->lr = ldtul_p(mem_buf); | |
677 | return sizeof(target_ulong); | |
678 | case 68: | |
679 | env->ctr = ldtul_p(mem_buf); | |
680 | return sizeof(target_ulong); | |
681 | case 69: | |
682 | env->xer = ldtul_p(mem_buf); | |
683 | return sizeof(target_ulong); | |
684 | case 70: | |
685 | /* fpscr */ | |
686 | return 4; | |
687 | } | |
688 | } | |
689 | return 0; | |
690 | } | |
691 | ||
692 | #elif defined (TARGET_SPARC) | |
693 | ||
694 | #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) | |
695 | #define NUM_CORE_REGS 86 | |
696 | #else | |
697 | #define NUM_CORE_REGS 73 | |
698 | #endif | |
699 | ||
700 | #ifdef TARGET_ABI32 | |
701 | #define GET_REGA(val) GET_REG32(val) | |
702 | #else | |
703 | #define GET_REGA(val) GET_REGL(val) | |
704 | #endif | |
705 | ||
706 | static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) | |
707 | { | |
708 | if (n < 8) { | |
709 | /* g0..g7 */ | |
710 | GET_REGA(env->gregs[n]); | |
711 | } | |
712 | if (n < 32) { | |
713 | /* register window */ | |
714 | GET_REGA(env->regwptr[n - 8]); | |
715 | } | |
716 | #if defined(TARGET_ABI32) || !defined(TARGET_SPARC64) | |
717 | if (n < 64) { | |
718 | /* fprs */ | |
719 | GET_REG32(*((uint32_t *)&env->fpr[n - 32])); | |
720 | } | |
721 | /* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */ | |
722 | switch (n) { | |
723 | case 64: GET_REGA(env->y); | |
724 | case 65: GET_REGA(GET_PSR(env)); | |
725 | case 66: GET_REGA(env->wim); | |
726 | case 67: GET_REGA(env->tbr); | |
727 | case 68: GET_REGA(env->pc); | |
728 | case 69: GET_REGA(env->npc); | |
729 | case 70: GET_REGA(env->fsr); | |
730 | case 71: GET_REGA(0); /* csr */ | |
731 | case 72: GET_REGA(0); | |
732 | } | |
733 | #else | |
734 | if (n < 64) { | |
735 | /* f0-f31 */ | |
736 | GET_REG32(*((uint32_t *)&env->fpr[n - 32])); | |
737 | } | |
738 | if (n < 80) { | |
739 | /* f32-f62 (double width, even numbers only) */ | |
740 | uint64_t val; | |
741 | ||
742 | val = (uint64_t)*((uint32_t *)&env->fpr[(n - 64) * 2 + 32]) << 32; | |
743 | val |= *((uint32_t *)&env->fpr[(n - 64) * 2 + 33]); | |
744 | GET_REG64(val); | |
745 | } | |
746 | switch (n) { | |
747 | case 80: GET_REGL(env->pc); | |
748 | case 81: GET_REGL(env->npc); | |
749 | case 82: GET_REGL(((uint64_t)GET_CCR(env) << 32) | | |
750 | ((env->asi & 0xff) << 24) | | |
751 | ((env->pstate & 0xfff) << 8) | | |
752 | GET_CWP64(env)); | |
753 | case 83: GET_REGL(env->fsr); | |
754 | case 84: GET_REGL(env->fprs); | |
755 | case 85: GET_REGL(env->y); | |
756 | } | |
757 | #endif | |
758 | return 0; | |
759 | } | |
760 | ||
761 | static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) | |
762 | { | |
763 | #if defined(TARGET_ABI32) | |
764 | abi_ulong tmp; | |
765 | ||
766 | tmp = ldl_p(mem_buf); | |
767 | #else | |
768 | target_ulong tmp; | |
769 | ||
770 | tmp = ldtul_p(mem_buf); | |
771 | #endif | |
772 | ||
773 | if (n < 8) { | |
774 | /* g0..g7 */ | |
775 | env->gregs[n] = tmp; | |
776 | } else if (n < 32) { | |
777 | /* register window */ | |
778 | env->regwptr[n - 8] = tmp; | |
779 | } | |
780 | #if defined(TARGET_ABI32) || !defined(TARGET_SPARC64) | |
781 | else if (n < 64) { | |
782 | /* fprs */ | |
783 | *((uint32_t *)&env->fpr[n - 32]) = tmp; | |
784 | } else { | |
785 | /* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */ | |
786 | switch (n) { | |
787 | case 64: env->y = tmp; break; | |
788 | case 65: PUT_PSR(env, tmp); break; | |
789 | case 66: env->wim = tmp; break; | |
790 | case 67: env->tbr = tmp; break; | |
791 | case 68: env->pc = tmp; break; | |
792 | case 69: env->npc = tmp; break; | |
793 | case 70: env->fsr = tmp; break; | |
794 | default: return 0; | |
795 | } | |
796 | } | |
797 | return 4; | |
798 | #else | |
799 | else if (n < 64) { | |
800 | /* f0-f31 */ | |
801 | env->fpr[n] = ldfl_p(mem_buf); | |
802 | return 4; | |
803 | } else if (n < 80) { | |
804 | /* f32-f62 (double width, even numbers only) */ | |
805 | *((uint32_t *)&env->fpr[(n - 64) * 2 + 32]) = tmp >> 32; | |
806 | *((uint32_t *)&env->fpr[(n - 64) * 2 + 33]) = tmp; | |
807 | } else { | |
808 | switch (n) { | |
809 | case 80: env->pc = tmp; break; | |
810 | case 81: env->npc = tmp; break; | |
811 | case 82: | |
812 | PUT_CCR(env, tmp >> 32); | |
813 | env->asi = (tmp >> 24) & 0xff; | |
814 | env->pstate = (tmp >> 8) & 0xfff; | |
815 | PUT_CWP64(env, tmp & 0xff); | |
816 | break; | |
817 | case 83: env->fsr = tmp; break; | |
818 | case 84: env->fprs = tmp; break; | |
819 | case 85: env->y = tmp; break; | |
820 | default: return 0; | |
821 | } | |
822 | } | |
823 | return 8; | |
824 | #endif | |
825 | } | |
826 | #elif defined (TARGET_ARM) | |
827 | ||
828 | /* Old gdb always expect FPA registers. Newer (xml-aware) gdb only expect | |
829 | whatever the target description contains. Due to a historical mishap | |
830 | the FPA registers appear in between core integer regs and the CPSR. | |
831 | We hack round this by giving the FPA regs zero size when talking to a | |
832 | newer gdb. */ | |
833 | #define NUM_CORE_REGS 26 | |
834 | #define GDB_CORE_XML "arm-core.xml" | |
835 | ||
836 | static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) | |
837 | { | |
838 | if (n < 16) { | |
839 | /* Core integer register. */ | |
840 | GET_REG32(env->regs[n]); | |
841 | } | |
842 | if (n < 24) { | |
843 | /* FPA registers. */ | |
844 | if (gdb_has_xml) | |
845 | return 0; | |
846 | memset(mem_buf, 0, 12); | |
847 | return 12; | |
848 | } | |
849 | switch (n) { | |
850 | case 24: | |
851 | /* FPA status register. */ | |
852 | if (gdb_has_xml) | |
853 | return 0; | |
854 | GET_REG32(0); | |
855 | case 25: | |
856 | /* CPSR */ | |
857 | GET_REG32(cpsr_read(env)); | |
858 | } | |
859 | /* Unknown register. */ | |
860 | return 0; | |
861 | } | |
862 | ||
863 | static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) | |
864 | { | |
865 | uint32_t tmp; | |
866 | ||
867 | tmp = ldl_p(mem_buf); | |
868 | ||
869 | /* Mask out low bit of PC to workaround gdb bugs. This will probably | |
870 | cause problems if we ever implement the Jazelle DBX extensions. */ | |
871 | if (n == 15) | |
872 | tmp &= ~1; | |
873 | ||
874 | if (n < 16) { | |
875 | /* Core integer register. */ | |
876 | env->regs[n] = tmp; | |
877 | return 4; | |
878 | } | |
879 | if (n < 24) { /* 16-23 */ | |
880 | /* FPA registers (ignored). */ | |
881 | if (gdb_has_xml) | |
882 | return 0; | |
883 | return 12; | |
884 | } | |
885 | switch (n) { | |
886 | case 24: | |
887 | /* FPA status register (ignored). */ | |
888 | if (gdb_has_xml) | |
889 | return 0; | |
890 | return 4; | |
891 | case 25: | |
892 | /* CPSR */ | |
893 | cpsr_write (env, tmp, 0xffffffff); | |
894 | return 4; | |
895 | } | |
896 | /* Unknown register. */ | |
897 | return 0; | |
898 | } | |
899 | ||
900 | #elif defined (TARGET_M68K) | |
901 | ||
902 | #define NUM_CORE_REGS 18 | |
903 | ||
904 | #define GDB_CORE_XML "cf-core.xml" | |
905 | ||
906 | static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) | |
907 | { | |
908 | if (n < 8) { | |
909 | /* D0-D7 */ | |
910 | GET_REG32(env->dregs[n]); | |
911 | } else if (n < 16) { | |
912 | /* A0-A7 */ | |
913 | GET_REG32(env->aregs[n - 8]); | |
914 | } else { | |
915 | switch (n) { | |
916 | case 16: GET_REG32(env->sr); | |
917 | case 17: GET_REG32(env->pc); | |
918 | } | |
919 | } | |
920 | /* FP registers not included here because they vary between | |
921 | ColdFire and m68k. Use XML bits for these. */ | |
922 | return 0; | |
923 | } | |
924 | ||
925 | static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) | |
926 | { | |
927 | uint32_t tmp; | |
928 | ||
929 | tmp = ldl_p(mem_buf); | |
930 | ||
931 | if (n < 8) { | |
932 | /* D0-D7 */ | |
933 | env->dregs[n] = tmp; | |
934 | } else if (n < 8) { | |
935 | /* A0-A7 */ | |
936 | env->aregs[n - 8] = tmp; | |
937 | } else { | |
938 | switch (n) { | |
939 | case 16: env->sr = tmp; break; | |
940 | case 17: env->pc = tmp; break; | |
941 | default: return 0; | |
942 | } | |
943 | } | |
944 | return 4; | |
945 | } | |
946 | #elif defined (TARGET_MIPS) | |
947 | ||
948 | #define NUM_CORE_REGS 73 | |
949 | ||
950 | static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) | |
951 | { | |
952 | if (n < 32) { | |
953 | GET_REGL(env->active_tc.gpr[n]); | |
954 | } | |
955 | if (env->CP0_Config1 & (1 << CP0C1_FP)) { | |
956 | if (n >= 38 && n < 70) { | |
957 | if (env->CP0_Status & (1 << CP0St_FR)) | |
958 | GET_REGL(env->active_fpu.fpr[n - 38].d); | |
959 | else | |
960 | GET_REGL(env->active_fpu.fpr[n - 38].w[FP_ENDIAN_IDX]); | |
961 | } | |
962 | switch (n) { | |
963 | case 70: GET_REGL((int32_t)env->active_fpu.fcr31); | |
964 | case 71: GET_REGL((int32_t)env->active_fpu.fcr0); | |
965 | } | |
966 | } | |
967 | switch (n) { | |
968 | case 32: GET_REGL((int32_t)env->CP0_Status); | |
969 | case 33: GET_REGL(env->active_tc.LO[0]); | |
970 | case 34: GET_REGL(env->active_tc.HI[0]); | |
971 | case 35: GET_REGL(env->CP0_BadVAddr); | |
972 | case 36: GET_REGL((int32_t)env->CP0_Cause); | |
973 | case 37: GET_REGL(env->active_tc.PC); | |
974 | case 72: GET_REGL(0); /* fp */ | |
975 | case 89: GET_REGL((int32_t)env->CP0_PRid); | |
976 | } | |
977 | if (n >= 73 && n <= 88) { | |
978 | /* 16 embedded regs. */ | |
979 | GET_REGL(0); | |
980 | } | |
981 | ||
982 | return 0; | |
983 | } | |
984 | ||
985 | /* convert MIPS rounding mode in FCR31 to IEEE library */ | |
986 | static unsigned int ieee_rm[] = | |
987 | { | |
988 | float_round_nearest_even, | |
989 | float_round_to_zero, | |
990 | float_round_up, | |
991 | float_round_down | |
992 | }; | |
993 | #define RESTORE_ROUNDING_MODE \ | |
994 | set_float_rounding_mode(ieee_rm[env->active_fpu.fcr31 & 3], &env->active_fpu.fp_status) | |
995 | ||
996 | static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) | |
997 | { | |
998 | target_ulong tmp; | |
999 | ||
1000 | tmp = ldtul_p(mem_buf); | |
1001 | ||
1002 | if (n < 32) { | |
1003 | env->active_tc.gpr[n] = tmp; | |
1004 | return sizeof(target_ulong); | |
1005 | } | |
1006 | if (env->CP0_Config1 & (1 << CP0C1_FP) | |
1007 | && n >= 38 && n < 73) { | |
1008 | if (n < 70) { | |
1009 | if (env->CP0_Status & (1 << CP0St_FR)) | |
1010 | env->active_fpu.fpr[n - 38].d = tmp; | |
1011 | else | |
1012 | env->active_fpu.fpr[n - 38].w[FP_ENDIAN_IDX] = tmp; | |
1013 | } | |
1014 | switch (n) { | |
1015 | case 70: | |
1016 | env->active_fpu.fcr31 = tmp & 0xFF83FFFF; | |
1017 | /* set rounding mode */ | |
1018 | RESTORE_ROUNDING_MODE; | |
1019 | #ifndef CONFIG_SOFTFLOAT | |
1020 | /* no floating point exception for native float */ | |
1021 | SET_FP_ENABLE(env->active_fpu.fcr31, 0); | |
1022 | #endif | |
1023 | break; | |
1024 | case 71: env->active_fpu.fcr0 = tmp; break; | |
1025 | } | |
1026 | return sizeof(target_ulong); | |
1027 | } | |
1028 | switch (n) { | |
1029 | case 32: env->CP0_Status = tmp; break; | |
1030 | case 33: env->active_tc.LO[0] = tmp; break; | |
1031 | case 34: env->active_tc.HI[0] = tmp; break; | |
1032 | case 35: env->CP0_BadVAddr = tmp; break; | |
1033 | case 36: env->CP0_Cause = tmp; break; | |
1034 | case 37: env->active_tc.PC = tmp; break; | |
1035 | case 72: /* fp, ignored */ break; | |
1036 | default: | |
1037 | if (n > 89) | |
1038 | return 0; | |
1039 | /* Other registers are readonly. Ignore writes. */ | |
1040 | break; | |
1041 | } | |
1042 | ||
1043 | return sizeof(target_ulong); | |
1044 | } | |
1045 | #elif defined (TARGET_SH4) | |
1046 | ||
1047 | /* Hint: Use "set architecture sh4" in GDB to see fpu registers */ | |
1048 | /* FIXME: We should use XML for this. */ | |
1049 | ||
1050 | #define NUM_CORE_REGS 59 | |
1051 | ||
1052 | static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) | |
1053 | { | |
1054 | if (n < 8) { | |
1055 | if ((env->sr & (SR_MD | SR_RB)) == (SR_MD | SR_RB)) { | |
1056 | GET_REGL(env->gregs[n + 16]); | |
1057 | } else { | |
1058 | GET_REGL(env->gregs[n]); | |
1059 | } | |
1060 | } else if (n < 16) { | |
1061 | GET_REGL(env->gregs[n - 8]); | |
1062 | } else if (n >= 25 && n < 41) { | |
1063 | GET_REGL(env->fregs[(n - 25) + ((env->fpscr & FPSCR_FR) ? 16 : 0)]); | |
1064 | } else if (n >= 43 && n < 51) { | |
1065 | GET_REGL(env->gregs[n - 43]); | |
1066 | } else if (n >= 51 && n < 59) { | |
1067 | GET_REGL(env->gregs[n - (51 - 16)]); | |
1068 | } | |
1069 | switch (n) { | |
1070 | case 16: GET_REGL(env->pc); | |
1071 | case 17: GET_REGL(env->pr); | |
1072 | case 18: GET_REGL(env->gbr); | |
1073 | case 19: GET_REGL(env->vbr); | |
1074 | case 20: GET_REGL(env->mach); | |
1075 | case 21: GET_REGL(env->macl); | |
1076 | case 22: GET_REGL(env->sr); | |
1077 | case 23: GET_REGL(env->fpul); | |
1078 | case 24: GET_REGL(env->fpscr); | |
1079 | case 41: GET_REGL(env->ssr); | |
1080 | case 42: GET_REGL(env->spc); | |
1081 | } | |
1082 | ||
1083 | return 0; | |
1084 | } | |
1085 | ||
1086 | static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) | |
1087 | { | |
1088 | uint32_t tmp; | |
1089 | ||
1090 | tmp = ldl_p(mem_buf); | |
1091 | ||
1092 | if (n < 8) { | |
1093 | if ((env->sr & (SR_MD | SR_RB)) == (SR_MD | SR_RB)) { | |
1094 | env->gregs[n + 16] = tmp; | |
1095 | } else { | |
1096 | env->gregs[n] = tmp; | |
1097 | } | |
1098 | return 4; | |
1099 | } else if (n < 16) { | |
1100 | env->gregs[n - 8] = tmp; | |
1101 | return 4; | |
1102 | } else if (n >= 25 && n < 41) { | |
1103 | env->fregs[(n - 25) + ((env->fpscr & FPSCR_FR) ? 16 : 0)] = tmp; | |
1104 | } else if (n >= 43 && n < 51) { | |
1105 | env->gregs[n - 43] = tmp; | |
1106 | return 4; | |
1107 | } else if (n >= 51 && n < 59) { | |
1108 | env->gregs[n - (51 - 16)] = tmp; | |
1109 | return 4; | |
1110 | } | |
1111 | switch (n) { | |
1112 | case 16: env->pc = tmp; | |
1113 | case 17: env->pr = tmp; | |
1114 | case 18: env->gbr = tmp; | |
1115 | case 19: env->vbr = tmp; | |
1116 | case 20: env->mach = tmp; | |
1117 | case 21: env->macl = tmp; | |
1118 | case 22: env->sr = tmp; | |
1119 | case 23: env->fpul = tmp; | |
1120 | case 24: env->fpscr = tmp; | |
1121 | case 41: env->ssr = tmp; | |
1122 | case 42: env->spc = tmp; | |
1123 | default: return 0; | |
1124 | } | |
1125 | ||
1126 | return 4; | |
1127 | } | |
1128 | #elif defined (TARGET_CRIS) | |
1129 | ||
1130 | #define NUM_CORE_REGS 49 | |
1131 | ||
1132 | static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) | |
1133 | { | |
1134 | uint8_t srs; | |
1135 | ||
1136 | srs = env->pregs[PR_SRS]; | |
1137 | if (n < 16) { | |
1138 | GET_REG32(env->regs[n]); | |
1139 | } | |
1140 | ||
1141 | if (n >= 21 && n < 32) { | |
1142 | GET_REG32(env->pregs[n - 16]); | |
1143 | } | |
1144 | if (n >= 33 && n < 49) { | |
1145 | GET_REG32(env->sregs[srs][n - 33]); | |
1146 | } | |
1147 | switch (n) { | |
1148 | case 16: GET_REG8(env->pregs[0]); | |
1149 | case 17: GET_REG8(env->pregs[1]); | |
1150 | case 18: GET_REG32(env->pregs[2]); | |
1151 | case 19: GET_REG8(srs); | |
1152 | case 20: GET_REG16(env->pregs[4]); | |
1153 | case 32: GET_REG32(env->pc); | |
1154 | } | |
1155 | ||
1156 | return 0; | |
1157 | } | |
1158 | ||
1159 | static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) | |
1160 | { | |
1161 | uint32_t tmp; | |
1162 | ||
1163 | if (n > 49) | |
1164 | return 0; | |
1165 | ||
1166 | tmp = ldl_p(mem_buf); | |
1167 | ||
1168 | if (n < 16) { | |
1169 | env->regs[n] = tmp; | |
1170 | } | |
1171 | ||
1172 | if (n >= 21 && n < 32) { | |
1173 | env->pregs[n - 16] = tmp; | |
1174 | } | |
1175 | ||
1176 | /* FIXME: Should support function regs be writable? */ | |
1177 | switch (n) { | |
1178 | case 16: return 1; | |
1179 | case 17: return 1; | |
1180 | case 18: env->pregs[PR_PID] = tmp; break; | |
1181 | case 19: return 1; | |
1182 | case 20: return 2; | |
1183 | case 32: env->pc = tmp; break; | |
1184 | } | |
1185 | ||
1186 | return 4; | |
1187 | } | |
1188 | #elif defined (TARGET_ALPHA) | |
1189 | ||
1190 | #define NUM_CORE_REGS 65 | |
1191 | ||
1192 | static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) | |
1193 | { | |
1194 | if (n < 31) { | |
1195 | GET_REGL(env->ir[n]); | |
1196 | } | |
1197 | else if (n == 31) { | |
1198 | GET_REGL(0); | |
1199 | } | |
1200 | else if (n<63) { | |
1201 | uint64_t val; | |
1202 | ||
1203 | val=*((uint64_t *)&env->fir[n-32]); | |
1204 | GET_REGL(val); | |
1205 | } | |
1206 | else if (n==63) { | |
1207 | GET_REGL(env->fpcr); | |
1208 | } | |
1209 | else if (n==64) { | |
1210 | GET_REGL(env->pc); | |
1211 | } | |
1212 | else { | |
1213 | GET_REGL(0); | |
1214 | } | |
1215 | ||
1216 | return 0; | |
1217 | } | |
1218 | ||
1219 | static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) | |
1220 | { | |
1221 | target_ulong tmp; | |
1222 | tmp = ldtul_p(mem_buf); | |
1223 | ||
1224 | if (n < 31) { | |
1225 | env->ir[n] = tmp; | |
1226 | } | |
1227 | ||
1228 | if (n > 31 && n < 63) { | |
1229 | env->fir[n - 32] = ldfl_p(mem_buf); | |
1230 | } | |
1231 | ||
1232 | if (n == 64 ) { | |
1233 | env->pc=tmp; | |
1234 | } | |
1235 | ||
1236 | return 8; | |
1237 | } | |
1238 | #else | |
1239 | ||
1240 | #define NUM_CORE_REGS 0 | |
1241 | ||
1242 | static int cpu_gdb_read_register(CPUState *env, uint8_t *mem_buf, int n) | |
1243 | { | |
1244 | return 0; | |
1245 | } | |
1246 | ||
1247 | static int cpu_gdb_write_register(CPUState *env, uint8_t *mem_buf, int n) | |
1248 | { | |
1249 | return 0; | |
1250 | } | |
1251 | ||
1252 | #endif | |
1253 | ||
1254 | static int num_g_regs = NUM_CORE_REGS; | |
1255 | ||
1256 | #ifdef GDB_CORE_XML | |
1257 | /* Encode data using the encoding for 'x' packets. */ | |
1258 | static int memtox(char *buf, const char *mem, int len) | |
1259 | { | |
1260 | char *p = buf; | |
1261 | char c; | |
1262 | ||
1263 | while (len--) { | |
1264 | c = *(mem++); | |
1265 | switch (c) { | |
1266 | case '#': case '$': case '*': case '}': | |
1267 | *(p++) = '}'; | |
1268 | *(p++) = c ^ 0x20; | |
1269 | break; | |
1270 | default: | |
1271 | *(p++) = c; | |
1272 | break; | |
1273 | } | |
1274 | } | |
1275 | return p - buf; | |
1276 | } | |
1277 | ||
1278 | static const char *get_feature_xml(const char *p, const char **newp) | |
1279 | { | |
1280 | extern const char *const xml_builtin[][2]; | |
1281 | size_t len; | |
1282 | int i; | |
1283 | const char *name; | |
1284 | static char target_xml[1024]; | |
1285 | ||
1286 | len = 0; | |
1287 | while (p[len] && p[len] != ':') | |
1288 | len++; | |
1289 | *newp = p + len; | |
1290 | ||
1291 | name = NULL; | |
1292 | if (strncmp(p, "target.xml", len) == 0) { | |
1293 | /* Generate the XML description for this CPU. */ | |
1294 | if (!target_xml[0]) { | |
1295 | GDBRegisterState *r; | |
1296 | ||
1297 | snprintf(target_xml, sizeof(target_xml), | |
1298 | "<?xml version=\"1.0\"?>" | |
1299 | "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">" | |
1300 | "<target>" | |
1301 | "<xi:include href=\"%s\"/>", | |
1302 | GDB_CORE_XML); | |
1303 | ||
1304 | for (r = first_cpu->gdb_regs; r; r = r->next) { | |
1305 | strcat(target_xml, "<xi:include href=\""); | |
1306 | strcat(target_xml, r->xml); | |
1307 | strcat(target_xml, "\"/>"); | |
1308 | } | |
1309 | strcat(target_xml, "</target>"); | |
1310 | } | |
1311 | return target_xml; | |
1312 | } | |
1313 | for (i = 0; ; i++) { | |
1314 | name = xml_builtin[i][0]; | |
1315 | if (!name || (strncmp(name, p, len) == 0 && strlen(name) == len)) | |
1316 | break; | |
1317 | } | |
1318 | return name ? xml_builtin[i][1] : NULL; | |
1319 | } | |
1320 | #endif | |
1321 | ||
1322 | static int gdb_read_register(CPUState *env, uint8_t *mem_buf, int reg) | |
1323 | { | |
1324 | GDBRegisterState *r; | |
1325 | ||
1326 | if (reg < NUM_CORE_REGS) | |
1327 | return cpu_gdb_read_register(env, mem_buf, reg); | |
1328 | ||
1329 | for (r = env->gdb_regs; r; r = r->next) { | |
1330 | if (r->base_reg <= reg && reg < r->base_reg + r->num_regs) { | |
1331 | return r->get_reg(env, mem_buf, reg - r->base_reg); | |
1332 | } | |
1333 | } | |
1334 | return 0; | |
1335 | } | |
1336 | ||
1337 | static int gdb_write_register(CPUState *env, uint8_t *mem_buf, int reg) | |
1338 | { | |
1339 | GDBRegisterState *r; | |
1340 | ||
1341 | if (reg < NUM_CORE_REGS) | |
1342 | return cpu_gdb_write_register(env, mem_buf, reg); | |
1343 | ||
1344 | for (r = env->gdb_regs; r; r = r->next) { | |
1345 | if (r->base_reg <= reg && reg < r->base_reg + r->num_regs) { | |
1346 | return r->set_reg(env, mem_buf, reg - r->base_reg); | |
1347 | } | |
1348 | } | |
1349 | return 0; | |
1350 | } | |
1351 | ||
1352 | /* Register a supplemental set of CPU registers. If g_pos is nonzero it | |
1353 | specifies the first register number and these registers are included in | |
1354 | a standard "g" packet. Direction is relative to gdb, i.e. get_reg is | |
1355 | gdb reading a CPU register, and set_reg is gdb modifying a CPU register. | |
1356 | */ | |
1357 | ||
1358 | void gdb_register_coprocessor(CPUState * env, | |
1359 | gdb_reg_cb get_reg, gdb_reg_cb set_reg, | |
1360 | int num_regs, const char *xml, int g_pos) | |
1361 | { | |
1362 | GDBRegisterState *s; | |
1363 | GDBRegisterState **p; | |
1364 | static int last_reg = NUM_CORE_REGS; | |
1365 | ||
1366 | s = (GDBRegisterState *)qemu_mallocz(sizeof(GDBRegisterState)); | |
1367 | s->base_reg = last_reg; | |
1368 | s->num_regs = num_regs; | |
1369 | s->get_reg = get_reg; | |
1370 | s->set_reg = set_reg; | |
1371 | s->xml = xml; | |
1372 | p = &env->gdb_regs; | |
1373 | while (*p) { | |
1374 | /* Check for duplicates. */ | |
1375 | if (strcmp((*p)->xml, xml) == 0) | |
1376 | return; | |
1377 | p = &(*p)->next; | |
1378 | } | |
1379 | /* Add to end of list. */ | |
1380 | last_reg += num_regs; | |
1381 | *p = s; | |
1382 | if (g_pos) { | |
1383 | if (g_pos != s->base_reg) { | |
1384 | fprintf(stderr, "Error: Bad gdb register numbering for '%s'\n" | |
1385 | "Expected %d got %d\n", xml, g_pos, s->base_reg); | |
1386 | } else { | |
1387 | num_g_regs = last_reg; | |
1388 | } | |
1389 | } | |
1390 | } | |
1391 | ||
1392 | /* GDB breakpoint/watchpoint types */ | |
1393 | #define GDB_BREAKPOINT_SW 0 | |
1394 | #define GDB_BREAKPOINT_HW 1 | |
1395 | #define GDB_WATCHPOINT_WRITE 2 | |
1396 | #define GDB_WATCHPOINT_READ 3 | |
1397 | #define GDB_WATCHPOINT_ACCESS 4 | |
1398 | ||
1399 | #ifndef CONFIG_USER_ONLY | |
1400 | static const int xlat_gdb_type[] = { | |
1401 | [GDB_WATCHPOINT_WRITE] = BP_GDB | BP_MEM_WRITE, | |
1402 | [GDB_WATCHPOINT_READ] = BP_GDB | BP_MEM_READ, | |
1403 | [GDB_WATCHPOINT_ACCESS] = BP_GDB | BP_MEM_ACCESS, | |
1404 | }; | |
1405 | #endif | |
1406 | ||
1407 | static int gdb_breakpoint_insert(target_ulong addr, target_ulong len, int type) | |
1408 | { | |
1409 | CPUState *env; | |
1410 | int err = 0; | |
1411 | ||
1412 | switch (type) { | |
1413 | case GDB_BREAKPOINT_SW: | |
1414 | case GDB_BREAKPOINT_HW: | |
1415 | for (env = first_cpu; env != NULL; env = env->next_cpu) { | |
1416 | err = cpu_breakpoint_insert(env, addr, BP_GDB, NULL); | |
1417 | if (err) | |
1418 | break; | |
1419 | } | |
1420 | return err; | |
1421 | #ifndef CONFIG_USER_ONLY | |
1422 | case GDB_WATCHPOINT_WRITE: | |
1423 | case GDB_WATCHPOINT_READ: | |
1424 | case GDB_WATCHPOINT_ACCESS: | |
1425 | for (env = first_cpu; env != NULL; env = env->next_cpu) { | |
1426 | err = cpu_watchpoint_insert(env, addr, len, xlat_gdb_type[type], | |
1427 | NULL); | |
1428 | if (err) | |
1429 | break; | |
1430 | } | |
1431 | return err; | |
1432 | #endif | |
1433 | default: | |
1434 | return -ENOSYS; | |
1435 | } | |
1436 | } | |
1437 | ||
1438 | static int gdb_breakpoint_remove(target_ulong addr, target_ulong len, int type) | |
1439 | { | |
1440 | CPUState *env; | |
1441 | int err = 0; | |
1442 | ||
1443 | switch (type) { | |
1444 | case GDB_BREAKPOINT_SW: | |
1445 | case GDB_BREAKPOINT_HW: | |
1446 | for (env = first_cpu; env != NULL; env = env->next_cpu) { | |
1447 | err = cpu_breakpoint_remove(env, addr, BP_GDB); | |
1448 | if (err) | |
1449 | break; | |
1450 | } | |
1451 | return err; | |
1452 | #ifndef CONFIG_USER_ONLY | |
1453 | case GDB_WATCHPOINT_WRITE: | |
1454 | case GDB_WATCHPOINT_READ: | |
1455 | case GDB_WATCHPOINT_ACCESS: | |
1456 | for (env = first_cpu; env != NULL; env = env->next_cpu) { | |
1457 | err = cpu_watchpoint_remove(env, addr, len, xlat_gdb_type[type]); | |
1458 | if (err) | |
1459 | break; | |
1460 | } | |
1461 | return err; | |
1462 | #endif | |
1463 | default: | |
1464 | return -ENOSYS; | |
1465 | } | |
1466 | } | |
1467 | ||
1468 | static void gdb_breakpoint_remove_all(void) | |
1469 | { | |
1470 | CPUState *env; | |
1471 | ||
1472 | for (env = first_cpu; env != NULL; env = env->next_cpu) { | |
1473 | cpu_breakpoint_remove_all(env, BP_GDB); | |
1474 | #ifndef CONFIG_USER_ONLY | |
1475 | cpu_watchpoint_remove_all(env, BP_GDB); | |
1476 | #endif | |
1477 | } | |
1478 | } | |
1479 | ||
1480 | static int gdb_handle_packet(GDBState *s, const char *line_buf) | |
1481 | { | |
1482 | CPUState *env; | |
1483 | const char *p; | |
1484 | int ch, reg_size, type, res, thread; | |
1485 | char buf[MAX_PACKET_LENGTH]; | |
1486 | uint8_t mem_buf[MAX_PACKET_LENGTH]; | |
1487 | uint8_t *registers; | |
1488 | target_ulong addr, len; | |
1489 | ||
1490 | #ifdef DEBUG_GDB | |
1491 | printf("command='%s'\n", line_buf); | |
1492 | #endif | |
1493 | p = line_buf; | |
1494 | ch = *p++; | |
1495 | switch(ch) { | |
1496 | case '?': | |
1497 | /* TODO: Make this return the correct value for user-mode. */ | |
1498 | snprintf(buf, sizeof(buf), "T%02xthread:%02x;", GDB_SIGNAL_TRAP, | |
1499 | s->c_cpu->cpu_index+1); | |
1500 | put_packet(s, buf); | |
1501 | /* Remove all the breakpoints when this query is issued, | |
1502 | * because gdb is doing and initial connect and the state | |
1503 | * should be cleaned up. | |
1504 | */ | |
1505 | gdb_breakpoint_remove_all(); | |
1506 | break; | |
1507 | case 'c': | |
1508 | if (*p != '\0') { | |
1509 | addr = strtoull(p, (char **)&p, 16); | |
1510 | #if defined(TARGET_I386) | |
1511 | s->c_cpu->eip = addr; | |
1512 | #elif defined (TARGET_PPC) | |
1513 | s->c_cpu->nip = addr; | |
1514 | #elif defined (TARGET_SPARC) | |
1515 | s->c_cpu->pc = addr; | |
1516 | s->c_cpu->npc = addr + 4; | |
1517 | #elif defined (TARGET_ARM) | |
1518 | s->c_cpu->regs[15] = addr; | |
1519 | #elif defined (TARGET_SH4) | |
1520 | s->c_cpu->pc = addr; | |
1521 | #elif defined (TARGET_MIPS) | |
1522 | s->c_cpu->active_tc.PC = addr; | |
1523 | #elif defined (TARGET_CRIS) | |
1524 | s->c_cpu->pc = addr; | |
1525 | #elif defined (TARGET_ALPHA) | |
1526 | s->c_cpu->pc = addr; | |
1527 | #endif | |
1528 | } | |
1529 | s->signal = 0; | |
1530 | gdb_continue(s); | |
1531 | return RS_IDLE; | |
1532 | case 'C': | |
1533 | s->signal = gdb_signal_to_target (strtoul(p, (char **)&p, 16)); | |
1534 | if (s->signal == -1) | |
1535 | s->signal = 0; | |
1536 | gdb_continue(s); | |
1537 | return RS_IDLE; | |
1538 | case 'k': | |
1539 | /* Kill the target */ | |
1540 | fprintf(stderr, "\nQEMU: Terminated via GDBstub\n"); | |
1541 | exit(0); | |
1542 | case 'D': | |
1543 | /* Detach packet */ | |
1544 | gdb_breakpoint_remove_all(); | |
1545 | gdb_continue(s); | |
1546 | put_packet(s, "OK"); | |
1547 | break; | |
1548 | case 's': | |
1549 | if (*p != '\0') { | |
1550 | addr = strtoull(p, (char **)&p, 16); | |
1551 | #if defined(TARGET_I386) | |
1552 | s->c_cpu->eip = addr; | |
1553 | #elif defined (TARGET_PPC) | |
1554 | s->c_cpu->nip = addr; | |
1555 | #elif defined (TARGET_SPARC) | |
1556 | s->c_cpu->pc = addr; | |
1557 | s->c_cpu->npc = addr + 4; | |
1558 | #elif defined (TARGET_ARM) | |
1559 | s->c_cpu->regs[15] = addr; | |
1560 | #elif defined (TARGET_SH4) | |
1561 | s->c_cpu->pc = addr; | |
1562 | #elif defined (TARGET_MIPS) | |
1563 | s->c_cpu->active_tc.PC = addr; | |
1564 | #elif defined (TARGET_CRIS) | |
1565 | s->c_cpu->pc = addr; | |
1566 | #elif defined (TARGET_ALPHA) | |
1567 | s->c_cpu->pc = addr; | |
1568 | #endif | |
1569 | } | |
1570 | cpu_single_step(s->c_cpu, sstep_flags); | |
1571 | gdb_continue(s); | |
1572 | return RS_IDLE; | |
1573 | case 'F': | |
1574 | { | |
1575 | target_ulong ret; | |
1576 | target_ulong err; | |
1577 | ||
1578 | ret = strtoull(p, (char **)&p, 16); | |
1579 | if (*p == ',') { | |
1580 | p++; | |
1581 | err = strtoull(p, (char **)&p, 16); | |
1582 | } else { | |
1583 | err = 0; | |
1584 | } | |
1585 | if (*p == ',') | |
1586 | p++; | |
1587 | type = *p; | |
1588 | if (gdb_current_syscall_cb) | |
1589 | gdb_current_syscall_cb(s->c_cpu, ret, err); | |
1590 | if (type == 'C') { | |
1591 | put_packet(s, "T02"); | |
1592 | } else { | |
1593 | gdb_continue(s); | |
1594 | } | |
1595 | } | |
1596 | break; | |
1597 | case 'g': | |
1598 | len = 0; | |
1599 | for (addr = 0; addr < num_g_regs; addr++) { | |
1600 | reg_size = gdb_read_register(s->g_cpu, mem_buf + len, addr); | |
1601 | len += reg_size; | |
1602 | } | |
1603 | memtohex(buf, mem_buf, len); | |
1604 | put_packet(s, buf); | |
1605 | break; | |
1606 | case 'G': | |
1607 | registers = mem_buf; | |
1608 | len = strlen(p) / 2; | |
1609 | hextomem((uint8_t *)registers, p, len); | |
1610 | for (addr = 0; addr < num_g_regs && len > 0; addr++) { | |
1611 | reg_size = gdb_write_register(s->g_cpu, registers, addr); | |
1612 | len -= reg_size; | |
1613 | registers += reg_size; | |
1614 | } | |
1615 | put_packet(s, "OK"); | |
1616 | break; | |
1617 | case 'm': | |
1618 | addr = strtoull(p, (char **)&p, 16); | |
1619 | if (*p == ',') | |
1620 | p++; | |
1621 | len = strtoull(p, NULL, 16); | |
1622 | if (cpu_memory_rw_debug(s->g_cpu, addr, mem_buf, len, 0) != 0) { | |
1623 | put_packet (s, "E14"); | |
1624 | } else { | |
1625 | memtohex(buf, mem_buf, len); | |
1626 | put_packet(s, buf); | |
1627 | } | |
1628 | break; | |
1629 | case 'M': | |
1630 | addr = strtoull(p, (char **)&p, 16); | |
1631 | if (*p == ',') | |
1632 | p++; | |
1633 | len = strtoull(p, (char **)&p, 16); | |
1634 | if (*p == ':') | |
1635 | p++; | |
1636 | hextomem(mem_buf, p, len); | |
1637 | if (cpu_memory_rw_debug(s->g_cpu, addr, mem_buf, len, 1) != 0) | |
1638 | put_packet(s, "E14"); | |
1639 | else | |
1640 | put_packet(s, "OK"); | |
1641 | break; | |
1642 | case 'p': | |
1643 | /* Older gdb are really dumb, and don't use 'g' if 'p' is avaialable. | |
1644 | This works, but can be very slow. Anything new enough to | |
1645 | understand XML also knows how to use this properly. */ | |
1646 | if (!gdb_has_xml) | |
1647 | goto unknown_command; | |
1648 | addr = strtoull(p, (char **)&p, 16); | |
1649 | reg_size = gdb_read_register(s->g_cpu, mem_buf, addr); | |
1650 | if (reg_size) { | |
1651 | memtohex(buf, mem_buf, reg_size); | |
1652 | put_packet(s, buf); | |
1653 | } else { | |
1654 | put_packet(s, "E14"); | |
1655 | } | |
1656 | break; | |
1657 | case 'P': | |
1658 | if (!gdb_has_xml) | |
1659 | goto unknown_command; | |
1660 | addr = strtoull(p, (char **)&p, 16); | |
1661 | if (*p == '=') | |
1662 | p++; | |
1663 | reg_size = strlen(p) / 2; | |
1664 | hextomem(mem_buf, p, reg_size); | |
1665 | gdb_write_register(s->g_cpu, mem_buf, addr); | |
1666 | put_packet(s, "OK"); | |
1667 | break; | |
1668 | case 'Z': | |
1669 | case 'z': | |
1670 | type = strtoul(p, (char **)&p, 16); | |
1671 | if (*p == ',') | |
1672 | p++; | |
1673 | addr = strtoull(p, (char **)&p, 16); | |
1674 | if (*p == ',') | |
1675 | p++; | |
1676 | len = strtoull(p, (char **)&p, 16); | |
1677 | if (ch == 'Z') | |
1678 | res = gdb_breakpoint_insert(addr, len, type); | |
1679 | else | |
1680 | res = gdb_breakpoint_remove(addr, len, type); | |
1681 | if (res >= 0) | |
1682 | put_packet(s, "OK"); | |
1683 | else if (res == -ENOSYS) | |
1684 | put_packet(s, ""); | |
1685 | else | |
1686 | put_packet(s, "E22"); | |
1687 | break; | |
1688 | case 'H': | |
1689 | type = *p++; | |
1690 | thread = strtoull(p, (char **)&p, 16); | |
1691 | if (thread == -1 || thread == 0) { | |
1692 | put_packet(s, "OK"); | |
1693 | break; | |
1694 | } | |
1695 | for (env = first_cpu; env != NULL; env = env->next_cpu) | |
1696 | if (env->cpu_index + 1 == thread) | |
1697 | break; | |
1698 | if (env == NULL) { | |
1699 | put_packet(s, "E22"); | |
1700 | break; | |
1701 | } | |
1702 | switch (type) { | |
1703 | case 'c': | |
1704 | s->c_cpu = env; | |
1705 | put_packet(s, "OK"); | |
1706 | break; | |
1707 | case 'g': | |
1708 | s->g_cpu = env; | |
1709 | put_packet(s, "OK"); | |
1710 | break; | |
1711 | default: | |
1712 | put_packet(s, "E22"); | |
1713 | break; | |
1714 | } | |
1715 | break; | |
1716 | case 'T': | |
1717 | thread = strtoull(p, (char **)&p, 16); | |
1718 | #ifndef CONFIG_USER_ONLY | |
1719 | if (thread > 0 && thread < smp_cpus + 1) | |
1720 | #else | |
1721 | if (thread == 1) | |
1722 | #endif | |
1723 | put_packet(s, "OK"); | |
1724 | else | |
1725 | put_packet(s, "E22"); | |
1726 | break; | |
1727 | case 'q': | |
1728 | case 'Q': | |
1729 | /* parse any 'q' packets here */ | |
1730 | if (!strcmp(p,"qemu.sstepbits")) { | |
1731 | /* Query Breakpoint bit definitions */ | |
1732 | snprintf(buf, sizeof(buf), "ENABLE=%x,NOIRQ=%x,NOTIMER=%x", | |
1733 | SSTEP_ENABLE, | |
1734 | SSTEP_NOIRQ, | |
1735 | SSTEP_NOTIMER); | |
1736 | put_packet(s, buf); | |
1737 | break; | |
1738 | } else if (strncmp(p,"qemu.sstep",10) == 0) { | |
1739 | /* Display or change the sstep_flags */ | |
1740 | p += 10; | |
1741 | if (*p != '=') { | |
1742 | /* Display current setting */ | |
1743 | snprintf(buf, sizeof(buf), "0x%x", sstep_flags); | |
1744 | put_packet(s, buf); | |
1745 | break; | |
1746 | } | |
1747 | p++; | |
1748 | type = strtoul(p, (char **)&p, 16); | |
1749 | sstep_flags = type; | |
1750 | put_packet(s, "OK"); | |
1751 | break; | |
1752 | } else if (strcmp(p,"C") == 0) { | |
1753 | /* "Current thread" remains vague in the spec, so always return | |
1754 | * the first CPU (gdb returns the first thread). */ | |
1755 | put_packet(s, "QC1"); | |
1756 | break; | |
1757 | } else if (strcmp(p,"fThreadInfo") == 0) { | |
1758 | s->query_cpu = first_cpu; | |
1759 | goto report_cpuinfo; | |
1760 | } else if (strcmp(p,"sThreadInfo") == 0) { | |
1761 | report_cpuinfo: | |
1762 | if (s->query_cpu) { | |
1763 | snprintf(buf, sizeof(buf), "m%x", s->query_cpu->cpu_index+1); | |
1764 | put_packet(s, buf); | |
1765 | s->query_cpu = s->query_cpu->next_cpu; | |
1766 | } else | |
1767 | put_packet(s, "l"); | |
1768 | break; | |
1769 | } else if (strncmp(p,"ThreadExtraInfo,", 16) == 0) { | |
1770 | thread = strtoull(p+16, (char **)&p, 16); | |
1771 | for (env = first_cpu; env != NULL; env = env->next_cpu) | |
1772 | if (env->cpu_index + 1 == thread) { | |
1773 | len = snprintf((char *)mem_buf, sizeof(mem_buf), | |
1774 | "CPU#%d [%s]", env->cpu_index, | |
1775 | env->halted ? "halted " : "running"); | |
1776 | memtohex(buf, mem_buf, len); | |
1777 | put_packet(s, buf); | |
1778 | break; | |
1779 | } | |
1780 | break; | |
1781 | } | |
1782 | #ifdef CONFIG_LINUX_USER | |
1783 | else if (strncmp(p, "Offsets", 7) == 0) { | |
1784 | TaskState *ts = s->c_cpu->opaque; | |
1785 | ||
1786 | snprintf(buf, sizeof(buf), | |
1787 | "Text=" TARGET_ABI_FMT_lx ";Data=" TARGET_ABI_FMT_lx | |
1788 | ";Bss=" TARGET_ABI_FMT_lx, | |
1789 | ts->info->code_offset, | |
1790 | ts->info->data_offset, | |
1791 | ts->info->data_offset); | |
1792 | put_packet(s, buf); | |
1793 | break; | |
1794 | } | |
1795 | #endif | |
1796 | if (strncmp(p, "Supported", 9) == 0) { | |
1797 | snprintf(buf, sizeof(buf), "PacketSize=%x", MAX_PACKET_LENGTH); | |
1798 | #ifdef GDB_CORE_XML | |
1799 | strcat(buf, ";qXfer:features:read+"); | |
1800 | #endif | |
1801 | put_packet(s, buf); | |
1802 | break; | |
1803 | } | |
1804 | #ifdef GDB_CORE_XML | |
1805 | if (strncmp(p, "Xfer:features:read:", 19) == 0) { | |
1806 | const char *xml; | |
1807 | target_ulong total_len; | |
1808 | ||
1809 | gdb_has_xml = 1; | |
1810 | p += 19; | |
1811 | xml = get_feature_xml(p, &p); | |
1812 | if (!xml) { | |
1813 | snprintf(buf, sizeof(buf), "E00"); | |
1814 | put_packet(s, buf); | |
1815 | break; | |
1816 | } | |
1817 | ||
1818 | if (*p == ':') | |
1819 | p++; | |
1820 | addr = strtoul(p, (char **)&p, 16); | |
1821 | if (*p == ',') | |
1822 | p++; | |
1823 | len = strtoul(p, (char **)&p, 16); | |
1824 | ||
1825 | total_len = strlen(xml); | |
1826 | if (addr > total_len) { | |
1827 | snprintf(buf, sizeof(buf), "E00"); | |
1828 | put_packet(s, buf); | |
1829 | break; | |
1830 | } | |
1831 | if (len > (MAX_PACKET_LENGTH - 5) / 2) | |
1832 | len = (MAX_PACKET_LENGTH - 5) / 2; | |
1833 | if (len < total_len - addr) { | |
1834 | buf[0] = 'm'; | |
1835 | len = memtox(buf + 1, xml + addr, len); | |
1836 | } else { | |
1837 | buf[0] = 'l'; | |
1838 | len = memtox(buf + 1, xml + addr, total_len - addr); | |
1839 | } | |
1840 | put_packet_binary(s, buf, len + 1); | |
1841 | break; | |
1842 | } | |
1843 | #endif | |
1844 | /* Unrecognised 'q' command. */ | |
1845 | goto unknown_command; | |
1846 | ||
1847 | default: | |
1848 | unknown_command: | |
1849 | /* put empty packet */ | |
1850 | buf[0] = '\0'; | |
1851 | put_packet(s, buf); | |
1852 | break; | |
1853 | } | |
1854 | return RS_IDLE; | |
1855 | } | |
1856 | ||
1857 | void gdb_set_stop_cpu(CPUState *env) | |
1858 | { | |
1859 | gdbserver_state->c_cpu = env; | |
1860 | gdbserver_state->g_cpu = env; | |
1861 | } | |
1862 | ||
1863 | #ifndef CONFIG_USER_ONLY | |
1864 | static void gdb_vm_stopped(void *opaque, int reason) | |
1865 | { | |
1866 | GDBState *s = gdbserver_state; | |
1867 | CPUState *env = s->c_cpu; | |
1868 | char buf[256]; | |
1869 | const char *type; | |
1870 | int ret; | |
1871 | ||
1872 | if (s->state == RS_SYSCALL) | |
1873 | return; | |
1874 | ||
1875 | /* disable single step if it was enable */ | |
1876 | cpu_single_step(env, 0); | |
1877 | ||
1878 | if (reason == EXCP_DEBUG) { | |
1879 | if (env->watchpoint_hit) { | |
1880 | switch (env->watchpoint_hit->flags & BP_MEM_ACCESS) { | |
1881 | case BP_MEM_READ: | |
1882 | type = "r"; | |
1883 | break; | |
1884 | case BP_MEM_ACCESS: | |
1885 | type = "a"; | |
1886 | break; | |
1887 | default: | |
1888 | type = ""; | |
1889 | break; | |
1890 | } | |
1891 | snprintf(buf, sizeof(buf), | |
1892 | "T%02xthread:%02x;%swatch:" TARGET_FMT_lx ";", | |
1893 | GDB_SIGNAL_TRAP, env->cpu_index+1, type, | |
1894 | env->watchpoint_hit->vaddr); | |
1895 | put_packet(s, buf); | |
1896 | env->watchpoint_hit = NULL; | |
1897 | return; | |
1898 | } | |
1899 | tb_flush(env); | |
1900 | ret = GDB_SIGNAL_TRAP; | |
1901 | } else if (reason == EXCP_INTERRUPT) { | |
1902 | ret = GDB_SIGNAL_INT; | |
1903 | } else { | |
1904 | ret = 0; | |
1905 | } | |
1906 | snprintf(buf, sizeof(buf), "T%02xthread:%02x;", ret, env->cpu_index+1); | |
1907 | put_packet(s, buf); | |
1908 | } | |
1909 | #endif | |
1910 | ||
1911 | /* Send a gdb syscall request. | |
1912 | This accepts limited printf-style format specifiers, specifically: | |
1913 | %x - target_ulong argument printed in hex. | |
1914 | %lx - 64-bit argument printed in hex. | |
1915 | %s - string pointer (target_ulong) and length (int) pair. */ | |
1916 | void gdb_do_syscall(gdb_syscall_complete_cb cb, const char *fmt, ...) | |
1917 | { | |
1918 | va_list va; | |
1919 | char buf[256]; | |
1920 | char *p; | |
1921 | target_ulong addr; | |
1922 | uint64_t i64; | |
1923 | GDBState *s; | |
1924 | ||
1925 | s = gdbserver_state; | |
1926 | if (!s) | |
1927 | return; | |
1928 | gdb_current_syscall_cb = cb; | |
1929 | s->state = RS_SYSCALL; | |
1930 | #ifndef CONFIG_USER_ONLY | |
1931 | vm_stop(EXCP_DEBUG); | |
1932 | #endif | |
1933 | s->state = RS_IDLE; | |
1934 | va_start(va, fmt); | |
1935 | p = buf; | |
1936 | *(p++) = 'F'; | |
1937 | while (*fmt) { | |
1938 | if (*fmt == '%') { | |
1939 | fmt++; | |
1940 | switch (*fmt++) { | |
1941 | case 'x': | |
1942 | addr = va_arg(va, target_ulong); | |
1943 | p += snprintf(p, &buf[sizeof(buf)] - p, TARGET_FMT_lx, addr); | |
1944 | break; | |
1945 | case 'l': | |
1946 | if (*(fmt++) != 'x') | |
1947 | goto bad_format; | |
1948 | i64 = va_arg(va, uint64_t); | |
1949 | p += snprintf(p, &buf[sizeof(buf)] - p, "%" PRIx64, i64); | |
1950 | break; | |
1951 | case 's': | |
1952 | addr = va_arg(va, target_ulong); | |
1953 | p += snprintf(p, &buf[sizeof(buf)] - p, TARGET_FMT_lx "/%x", | |
1954 | addr, va_arg(va, int)); | |
1955 | break; | |
1956 | default: | |
1957 | bad_format: | |
1958 | fprintf(stderr, "gdbstub: Bad syscall format string '%s'\n", | |
1959 | fmt - 1); | |
1960 | break; | |
1961 | } | |
1962 | } else { | |
1963 | *(p++) = *(fmt++); | |
1964 | } | |
1965 | } | |
1966 | *p = 0; | |
1967 | va_end(va); | |
1968 | put_packet(s, buf); | |
1969 | #ifdef CONFIG_USER_ONLY | |
1970 | gdb_handlesig(s->c_cpu, 0); | |
1971 | #else | |
1972 | cpu_interrupt(s->c_cpu, CPU_INTERRUPT_EXIT); | |
1973 | #endif | |
1974 | } | |
1975 | ||
1976 | static void gdb_read_byte(GDBState *s, int ch) | |
1977 | { | |
1978 | int i, csum; | |
1979 | uint8_t reply; | |
1980 | ||
1981 | #ifndef CONFIG_USER_ONLY | |
1982 | if (s->last_packet_len) { | |
1983 | /* Waiting for a response to the last packet. If we see the start | |
1984 | of a new command then abandon the previous response. */ | |
1985 | if (ch == '-') { | |
1986 | #ifdef DEBUG_GDB | |
1987 | printf("Got NACK, retransmitting\n"); | |
1988 | #endif | |
1989 | put_buffer(s, (uint8_t *)s->last_packet, s->last_packet_len); | |
1990 | } | |
1991 | #ifdef DEBUG_GDB | |
1992 | else if (ch == '+') | |
1993 | printf("Got ACK\n"); | |
1994 | else | |
1995 | printf("Got '%c' when expecting ACK/NACK\n", ch); | |
1996 | #endif | |
1997 | if (ch == '+' || ch == '$') | |
1998 | s->last_packet_len = 0; | |
1999 | if (ch != '$') | |
2000 | return; | |
2001 | } | |
2002 | if (vm_running) { | |
2003 | /* when the CPU is running, we cannot do anything except stop | |
2004 | it when receiving a char */ | |
2005 | vm_stop(EXCP_INTERRUPT); | |
2006 | } else | |
2007 | #endif | |
2008 | { | |
2009 | switch(s->state) { | |
2010 | case RS_IDLE: | |
2011 | if (ch == '$') { | |
2012 | s->line_buf_index = 0; | |
2013 | s->state = RS_GETLINE; | |
2014 | } | |
2015 | break; | |
2016 | case RS_GETLINE: | |
2017 | if (ch == '#') { | |
2018 | s->state = RS_CHKSUM1; | |
2019 | } else if (s->line_buf_index >= sizeof(s->line_buf) - 1) { | |
2020 | s->state = RS_IDLE; | |
2021 | } else { | |
2022 | s->line_buf[s->line_buf_index++] = ch; | |
2023 | } | |
2024 | break; | |
2025 | case RS_CHKSUM1: | |
2026 | s->line_buf[s->line_buf_index] = '\0'; | |
2027 | s->line_csum = fromhex(ch) << 4; | |
2028 | s->state = RS_CHKSUM2; | |
2029 | break; | |
2030 | case RS_CHKSUM2: | |
2031 | s->line_csum |= fromhex(ch); | |
2032 | csum = 0; | |
2033 | for(i = 0; i < s->line_buf_index; i++) { | |
2034 | csum += s->line_buf[i]; | |
2035 | } | |
2036 | if (s->line_csum != (csum & 0xff)) { | |
2037 | reply = '-'; | |
2038 | put_buffer(s, &reply, 1); | |
2039 | s->state = RS_IDLE; | |
2040 | } else { | |
2041 | reply = '+'; | |
2042 | put_buffer(s, &reply, 1); | |
2043 | s->state = gdb_handle_packet(s, s->line_buf); | |
2044 | } | |
2045 | break; | |
2046 | default: | |
2047 | abort(); | |
2048 | } | |
2049 | } | |
2050 | } | |
2051 | ||
2052 | #ifdef CONFIG_USER_ONLY | |
2053 | int | |
2054 | gdb_queuesig (void) | |
2055 | { | |
2056 | GDBState *s; | |
2057 | ||
2058 | s = gdbserver_state; | |
2059 | ||
2060 | if (gdbserver_fd < 0 || s->fd < 0) | |
2061 | return 0; | |
2062 | else | |
2063 | return 1; | |
2064 | } | |
2065 | ||
2066 | int | |
2067 | gdb_handlesig (CPUState *env, int sig) | |
2068 | { | |
2069 | GDBState *s; | |
2070 | char buf[256]; | |
2071 | int n; | |
2072 | ||
2073 | s = gdbserver_state; | |
2074 | if (gdbserver_fd < 0 || s->fd < 0) | |
2075 | return sig; | |
2076 | ||
2077 | /* disable single step if it was enabled */ | |
2078 | cpu_single_step(env, 0); | |
2079 | tb_flush(env); | |
2080 | ||
2081 | if (sig != 0) | |
2082 | { | |
2083 | snprintf(buf, sizeof(buf), "S%02x", target_signal_to_gdb (sig)); | |
2084 | put_packet(s, buf); | |
2085 | } | |
2086 | /* put_packet() might have detected that the peer terminated the | |
2087 | connection. */ | |
2088 | if (s->fd < 0) | |
2089 | return sig; | |
2090 | ||
2091 | sig = 0; | |
2092 | s->state = RS_IDLE; | |
2093 | s->running_state = 0; | |
2094 | while (s->running_state == 0) { | |
2095 | n = read (s->fd, buf, 256); | |
2096 | if (n > 0) | |
2097 | { | |
2098 | int i; | |
2099 | ||
2100 | for (i = 0; i < n; i++) | |
2101 | gdb_read_byte (s, buf[i]); | |
2102 | } | |
2103 | else if (n == 0 || errno != EAGAIN) | |
2104 | { | |
2105 | /* XXX: Connection closed. Should probably wait for annother | |
2106 | connection before continuing. */ | |
2107 | return sig; | |
2108 | } | |
2109 | } | |
2110 | sig = s->signal; | |
2111 | s->signal = 0; | |
2112 | return sig; | |
2113 | } | |
2114 | ||
2115 | /* Tell the remote gdb that the process has exited. */ | |
2116 | void gdb_exit(CPUState *env, int code) | |
2117 | { | |
2118 | GDBState *s; | |
2119 | char buf[4]; | |
2120 | ||
2121 | s = gdbserver_state; | |
2122 | if (gdbserver_fd < 0 || s->fd < 0) | |
2123 | return; | |
2124 | ||
2125 | snprintf(buf, sizeof(buf), "W%02x", code); | |
2126 | put_packet(s, buf); | |
2127 | } | |
2128 | ||
2129 | /* Tell the remote gdb that the process has exited due to SIG. */ | |
2130 | void gdb_signalled(CPUState *env, int sig) | |
2131 | { | |
2132 | GDBState *s; | |
2133 | char buf[4]; | |
2134 | ||
2135 | s = gdbserver_state; | |
2136 | if (gdbserver_fd < 0 || s->fd < 0) | |
2137 | return; | |
2138 | ||
2139 | snprintf(buf, sizeof(buf), "X%02x", target_signal_to_gdb (sig)); | |
2140 | put_packet(s, buf); | |
2141 | } | |
2142 | ||
2143 | static void gdb_accept(void) | |
2144 | { | |
2145 | GDBState *s; | |
2146 | struct sockaddr_in sockaddr; | |
2147 | socklen_t len; | |
2148 | int val, fd; | |
2149 | ||
2150 | for(;;) { | |
2151 | len = sizeof(sockaddr); | |
2152 | fd = accept(gdbserver_fd, (struct sockaddr *)&sockaddr, &len); | |
2153 | if (fd < 0 && errno != EINTR) { | |
2154 | perror("accept"); | |
2155 | return; | |
2156 | } else if (fd >= 0) { | |
2157 | break; | |
2158 | } | |
2159 | } | |
2160 | ||
2161 | /* set short latency */ | |
2162 | val = 1; | |
2163 | setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&val, sizeof(val)); | |
2164 | ||
2165 | s = qemu_mallocz(sizeof(GDBState)); | |
2166 | if (!s) { | |
2167 | errno = ENOMEM; | |
2168 | perror("accept"); | |
2169 | return; | |
2170 | } | |
2171 | ||
2172 | memset (s, 0, sizeof (GDBState)); | |
2173 | s->c_cpu = first_cpu; | |
2174 | s->g_cpu = first_cpu; | |
2175 | s->fd = fd; | |
2176 | gdb_has_xml = 0; | |
2177 | ||
2178 | gdbserver_state = s; | |
2179 | ||
2180 | fcntl(fd, F_SETFL, O_NONBLOCK); | |
2181 | } | |
2182 | ||
2183 | static int gdbserver_open(int port) | |
2184 | { | |
2185 | struct sockaddr_in sockaddr; | |
2186 | int fd, val, ret; | |
2187 | ||
2188 | fd = socket(PF_INET, SOCK_STREAM, 0); | |
2189 | if (fd < 0) { | |
2190 | perror("socket"); | |
2191 | return -1; | |
2192 | } | |
2193 | ||
2194 | /* allow fast reuse */ | |
2195 | val = 1; | |
2196 | setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&val, sizeof(val)); | |
2197 | ||
2198 | sockaddr.sin_family = AF_INET; | |
2199 | sockaddr.sin_port = htons(port); | |
2200 | sockaddr.sin_addr.s_addr = 0; | |
2201 | ret = bind(fd, (struct sockaddr *)&sockaddr, sizeof(sockaddr)); | |
2202 | if (ret < 0) { | |
2203 | perror("bind"); | |
2204 | return -1; | |
2205 | } | |
2206 | ret = listen(fd, 0); | |
2207 | if (ret < 0) { | |
2208 | perror("listen"); | |
2209 | return -1; | |
2210 | } | |
2211 | return fd; | |
2212 | } | |
2213 | ||
2214 | int gdbserver_start(int port) | |
2215 | { | |
2216 | gdbserver_fd = gdbserver_open(port); | |
2217 | if (gdbserver_fd < 0) | |
2218 | return -1; | |
2219 | /* accept connections */ | |
2220 | gdb_accept(); | |
2221 | return 0; | |
2222 | } | |
2223 | ||
2224 | /* Disable gdb stub for child processes. */ | |
2225 | void gdbserver_fork(CPUState *env) | |
2226 | { | |
2227 | GDBState *s = gdbserver_state; | |
2228 | if (s->fd < 0) | |
2229 | return; | |
2230 | close(s->fd); | |
2231 | s->fd = -1; | |
2232 | cpu_breakpoint_remove_all(env, BP_GDB); | |
2233 | cpu_watchpoint_remove_all(env, BP_GDB); | |
2234 | } | |
2235 | #else | |
2236 | static int gdb_chr_can_receive(void *opaque) | |
2237 | { | |
2238 | /* We can handle an arbitrarily large amount of data. | |
2239 | Pick the maximum packet size, which is as good as anything. */ | |
2240 | return MAX_PACKET_LENGTH; | |
2241 | } | |
2242 | ||
2243 | static void gdb_chr_receive(void *opaque, const uint8_t *buf, int size) | |
2244 | { | |
2245 | int i; | |
2246 | ||
2247 | for (i = 0; i < size; i++) { | |
2248 | gdb_read_byte(gdbserver_state, buf[i]); | |
2249 | } | |
2250 | } | |
2251 | ||
2252 | static void gdb_chr_event(void *opaque, int event) | |
2253 | { | |
2254 | switch (event) { | |
2255 | case CHR_EVENT_RESET: | |
2256 | vm_stop(EXCP_INTERRUPT); | |
2257 | gdb_has_xml = 0; | |
2258 | break; | |
2259 | default: | |
2260 | break; | |
2261 | } | |
2262 | } | |
2263 | ||
2264 | int gdbserver_start(const char *port) | |
2265 | { | |
2266 | GDBState *s; | |
2267 | char gdbstub_port_name[128]; | |
2268 | int port_num; | |
2269 | char *p; | |
2270 | CharDriverState *chr; | |
2271 | ||
2272 | if (!port || !*port) | |
2273 | return -1; | |
2274 | ||
2275 | port_num = strtol(port, &p, 10); | |
2276 | if (*p == 0) { | |
2277 | /* A numeric value is interpreted as a port number. */ | |
2278 | snprintf(gdbstub_port_name, sizeof(gdbstub_port_name), | |
2279 | "tcp::%d,nowait,nodelay,server", port_num); | |
2280 | port = gdbstub_port_name; | |
2281 | } | |
2282 | ||
2283 | chr = qemu_chr_open("gdb", port); | |
2284 | if (!chr) | |
2285 | return -1; | |
2286 | ||
2287 | s = qemu_mallocz(sizeof(GDBState)); | |
2288 | if (!s) { | |
2289 | return -1; | |
2290 | } | |
2291 | s->c_cpu = first_cpu; | |
2292 | s->g_cpu = first_cpu; | |
2293 | s->chr = chr; | |
2294 | gdbserver_state = s; | |
2295 | qemu_chr_add_handlers(chr, gdb_chr_can_receive, gdb_chr_receive, | |
2296 | gdb_chr_event, NULL); | |
2297 | qemu_add_vm_stop_handler(gdb_vm_stopped, NULL); | |
2298 | return 0; | |
2299 | } | |
2300 | #endif |