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d02ed0bb MM |
1 | /* Process record and replay target for GDB, the GNU debugger. |
2 | ||
ecd75fc8 | 3 | Copyright (C) 2013-2014 Free Software Foundation, Inc. |
d02ed0bb MM |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
21 | #include "gdbcmd.h" | |
22 | #include "regcache.h" | |
23 | #include "gdbthread.h" | |
24 | #include "event-top.h" | |
25 | #include "exceptions.h" | |
26 | #include "completer.h" | |
27 | #include "arch-utils.h" | |
28 | #include "gdbcore.h" | |
29 | #include "exec.h" | |
30 | #include "record.h" | |
31 | #include "record-full.h" | |
32 | #include "elf-bfd.h" | |
33 | #include "gcore.h" | |
34 | #include "event-loop.h" | |
35 | #include "inf-loop.h" | |
36 | #include "gdb_bfd.h" | |
37 | #include "observer.h" | |
38 | ||
39 | #include <signal.h> | |
40 | ||
41 | /* This module implements "target record-full", also known as "process | |
42 | record and replay". This target sits on top of a "normal" target | |
43 | (a target that "has execution"), and provides a record and replay | |
44 | functionality, including reverse debugging. | |
45 | ||
46 | Target record has two modes: recording, and replaying. | |
47 | ||
48 | In record mode, we intercept the to_resume and to_wait methods. | |
49 | Whenever gdb resumes the target, we run the target in single step | |
50 | mode, and we build up an execution log in which, for each executed | |
51 | instruction, we record all changes in memory and register state. | |
52 | This is invisible to the user, to whom it just looks like an | |
53 | ordinary debugging session (except for performance degredation). | |
54 | ||
55 | In replay mode, instead of actually letting the inferior run as a | |
56 | process, we simulate its execution by playing back the recorded | |
57 | execution log. For each instruction in the log, we simulate the | |
58 | instruction's side effects by duplicating the changes that it would | |
59 | have made on memory and registers. */ | |
60 | ||
88d1aa9d | 61 | #define DEFAULT_RECORD_FULL_INSN_MAX_NUM 200000 |
d02ed0bb | 62 | |
88d1aa9d MM |
63 | #define RECORD_FULL_IS_REPLAY \ |
64 | (record_full_list->next || execution_direction == EXEC_REVERSE) | |
d02ed0bb | 65 | |
88d1aa9d | 66 | #define RECORD_FULL_FILE_MAGIC netorder32(0x20091016) |
d02ed0bb MM |
67 | |
68 | /* These are the core structs of the process record functionality. | |
69 | ||
88d1aa9d MM |
70 | A record_full_entry is a record of the value change of a register |
71 | ("record_full_reg") or a part of memory ("record_full_mem"). And each | |
72 | instruction must have a struct record_full_entry ("record_full_end") | |
73 | that indicates that this is the last struct record_full_entry of this | |
d02ed0bb MM |
74 | instruction. |
75 | ||
88d1aa9d MM |
76 | Each struct record_full_entry is linked to "record_full_list" by "prev" |
77 | and "next" pointers. */ | |
d02ed0bb | 78 | |
88d1aa9d | 79 | struct record_full_mem_entry |
d02ed0bb MM |
80 | { |
81 | CORE_ADDR addr; | |
82 | int len; | |
83 | /* Set this flag if target memory for this entry | |
84 | can no longer be accessed. */ | |
85 | int mem_entry_not_accessible; | |
86 | union | |
87 | { | |
88 | gdb_byte *ptr; | |
89 | gdb_byte buf[sizeof (gdb_byte *)]; | |
90 | } u; | |
91 | }; | |
92 | ||
88d1aa9d | 93 | struct record_full_reg_entry |
d02ed0bb MM |
94 | { |
95 | unsigned short num; | |
96 | unsigned short len; | |
97 | union | |
98 | { | |
99 | gdb_byte *ptr; | |
100 | gdb_byte buf[2 * sizeof (gdb_byte *)]; | |
101 | } u; | |
102 | }; | |
103 | ||
88d1aa9d | 104 | struct record_full_end_entry |
d02ed0bb MM |
105 | { |
106 | enum gdb_signal sigval; | |
107 | ULONGEST insn_num; | |
108 | }; | |
109 | ||
88d1aa9d | 110 | enum record_full_type |
d02ed0bb | 111 | { |
88d1aa9d MM |
112 | record_full_end = 0, |
113 | record_full_reg, | |
114 | record_full_mem | |
d02ed0bb MM |
115 | }; |
116 | ||
117 | /* This is the data structure that makes up the execution log. | |
118 | ||
119 | The execution log consists of a single linked list of entries | |
88d1aa9d | 120 | of type "struct record_full_entry". It is doubly linked so that it |
d02ed0bb MM |
121 | can be traversed in either direction. |
122 | ||
123 | The start of the list is anchored by a struct called | |
88d1aa9d MM |
124 | "record_full_first". The pointer "record_full_list" either points |
125 | to the last entry that was added to the list (in record mode), or to | |
126 | the next entry in the list that will be executed (in replay mode). | |
d02ed0bb | 127 | |
88d1aa9d MM |
128 | Each list element (struct record_full_entry), in addition to next |
129 | and prev pointers, consists of a union of three entry types: mem, | |
130 | reg, and end. A field called "type" determines which entry type is | |
d02ed0bb MM |
131 | represented by a given list element. |
132 | ||
133 | Each instruction that is added to the execution log is represented | |
134 | by a variable number of list elements ('entries'). The instruction | |
135 | will have one "reg" entry for each register that is changed by | |
136 | executing the instruction (including the PC in every case). It | |
137 | will also have one "mem" entry for each memory change. Finally, | |
138 | each instruction will have an "end" entry that separates it from | |
139 | the changes associated with the next instruction. */ | |
140 | ||
88d1aa9d | 141 | struct record_full_entry |
d02ed0bb | 142 | { |
88d1aa9d MM |
143 | struct record_full_entry *prev; |
144 | struct record_full_entry *next; | |
145 | enum record_full_type type; | |
d02ed0bb MM |
146 | union |
147 | { | |
148 | /* reg */ | |
88d1aa9d | 149 | struct record_full_reg_entry reg; |
d02ed0bb | 150 | /* mem */ |
88d1aa9d | 151 | struct record_full_mem_entry mem; |
d02ed0bb | 152 | /* end */ |
88d1aa9d | 153 | struct record_full_end_entry end; |
d02ed0bb MM |
154 | } u; |
155 | }; | |
156 | ||
157 | /* If true, query if PREC cannot record memory | |
158 | change of next instruction. */ | |
25ea693b | 159 | int record_full_memory_query = 0; |
d02ed0bb | 160 | |
88d1aa9d | 161 | struct record_full_core_buf_entry |
d02ed0bb | 162 | { |
88d1aa9d | 163 | struct record_full_core_buf_entry *prev; |
d02ed0bb MM |
164 | struct target_section *p; |
165 | bfd_byte *buf; | |
166 | }; | |
167 | ||
168 | /* Record buf with core target. */ | |
88d1aa9d MM |
169 | static gdb_byte *record_full_core_regbuf = NULL; |
170 | static struct target_section *record_full_core_start; | |
171 | static struct target_section *record_full_core_end; | |
172 | static struct record_full_core_buf_entry *record_full_core_buf_list = NULL; | |
d02ed0bb MM |
173 | |
174 | /* The following variables are used for managing the linked list that | |
175 | represents the execution log. | |
176 | ||
88d1aa9d MM |
177 | record_full_first is the anchor that holds down the beginning of |
178 | the list. | |
d02ed0bb | 179 | |
88d1aa9d | 180 | record_full_list serves two functions: |
d02ed0bb MM |
181 | 1) In record mode, it anchors the end of the list. |
182 | 2) In replay mode, it traverses the list and points to | |
183 | the next instruction that must be emulated. | |
184 | ||
88d1aa9d MM |
185 | record_full_arch_list_head and record_full_arch_list_tail are used |
186 | to manage a separate list, which is used to build up the change | |
187 | elements of the currently executing instruction during record mode. | |
188 | When this instruction has been completely annotated in the "arch | |
189 | list", it will be appended to the main execution log. */ | |
d02ed0bb | 190 | |
88d1aa9d MM |
191 | static struct record_full_entry record_full_first; |
192 | static struct record_full_entry *record_full_list = &record_full_first; | |
193 | static struct record_full_entry *record_full_arch_list_head = NULL; | |
194 | static struct record_full_entry *record_full_arch_list_tail = NULL; | |
d02ed0bb | 195 | |
88d1aa9d MM |
196 | /* 1 ask user. 0 auto delete the last struct record_full_entry. */ |
197 | static int record_full_stop_at_limit = 1; | |
d02ed0bb | 198 | /* Maximum allowed number of insns in execution log. */ |
88d1aa9d MM |
199 | static unsigned int record_full_insn_max_num |
200 | = DEFAULT_RECORD_FULL_INSN_MAX_NUM; | |
d02ed0bb | 201 | /* Actual count of insns presently in execution log. */ |
7ee70bf5 | 202 | static unsigned int record_full_insn_num = 0; |
d02ed0bb MM |
203 | /* Count of insns logged so far (may be larger |
204 | than count of insns presently in execution log). */ | |
88d1aa9d | 205 | static ULONGEST record_full_insn_count; |
d02ed0bb MM |
206 | |
207 | /* The target_ops of process record. */ | |
88d1aa9d MM |
208 | static struct target_ops record_full_ops; |
209 | static struct target_ops record_full_core_ops; | |
d02ed0bb | 210 | |
8213266a PA |
211 | /* See record-full.h. */ |
212 | ||
213 | int | |
214 | record_full_is_used (void) | |
215 | { | |
216 | struct target_ops *t; | |
217 | ||
218 | t = find_record_target (); | |
219 | return (t == &record_full_ops | |
220 | || t == &record_full_core_ops); | |
221 | } | |
222 | ||
223 | ||
d02ed0bb MM |
224 | /* Command lists for "set/show record full". */ |
225 | static struct cmd_list_element *set_record_full_cmdlist; | |
226 | static struct cmd_list_element *show_record_full_cmdlist; | |
227 | ||
228 | /* Command list for "record full". */ | |
229 | static struct cmd_list_element *record_full_cmdlist; | |
230 | ||
231 | /* The beneath function pointers. */ | |
88d1aa9d MM |
232 | static struct target_ops *record_full_beneath_to_resume_ops; |
233 | static void (*record_full_beneath_to_resume) (struct target_ops *, ptid_t, int, | |
234 | enum gdb_signal); | |
235 | static struct target_ops *record_full_beneath_to_wait_ops; | |
236 | static ptid_t (*record_full_beneath_to_wait) (struct target_ops *, ptid_t, | |
237 | struct target_waitstatus *, | |
238 | int); | |
239 | static struct target_ops *record_full_beneath_to_store_registers_ops; | |
240 | static void (*record_full_beneath_to_store_registers) (struct target_ops *, | |
241 | struct regcache *, | |
242 | int regno); | |
243 | static struct target_ops *record_full_beneath_to_xfer_partial_ops; | |
4ac248ca | 244 | static target_xfer_partial_ftype *record_full_beneath_to_xfer_partial; |
88d1aa9d | 245 | static int |
3db08215 MM |
246 | (*record_full_beneath_to_insert_breakpoint) (struct target_ops *, |
247 | struct gdbarch *, | |
88d1aa9d | 248 | struct bp_target_info *); |
3db08215 | 249 | static struct target_ops *record_full_beneath_to_insert_breakpoint_ops; |
88d1aa9d | 250 | static int |
3db08215 MM |
251 | (*record_full_beneath_to_remove_breakpoint) (struct target_ops *, |
252 | struct gdbarch *, | |
88d1aa9d | 253 | struct bp_target_info *); |
3db08215 | 254 | static struct target_ops *record_full_beneath_to_remove_breakpoint_ops; |
88d1aa9d MM |
255 | static int (*record_full_beneath_to_stopped_by_watchpoint) (void); |
256 | static int (*record_full_beneath_to_stopped_data_address) (struct target_ops *, | |
257 | CORE_ADDR *); | |
258 | static void | |
259 | (*record_full_beneath_to_async) (void (*) (enum inferior_event_type, void *), | |
260 | void *); | |
261 | ||
262 | static void record_full_goto_insn (struct record_full_entry *entry, | |
263 | enum exec_direction_kind dir); | |
85e1311a | 264 | static void record_full_save (const char *recfilename); |
88d1aa9d MM |
265 | |
266 | /* Alloc and free functions for record_full_reg, record_full_mem, and | |
267 | record_full_end entries. */ | |
268 | ||
269 | /* Alloc a record_full_reg record entry. */ | |
270 | ||
271 | static inline struct record_full_entry * | |
272 | record_full_reg_alloc (struct regcache *regcache, int regnum) | |
273 | { | |
274 | struct record_full_entry *rec; | |
d02ed0bb MM |
275 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
276 | ||
88d1aa9d MM |
277 | rec = xcalloc (1, sizeof (struct record_full_entry)); |
278 | rec->type = record_full_reg; | |
d02ed0bb MM |
279 | rec->u.reg.num = regnum; |
280 | rec->u.reg.len = register_size (gdbarch, regnum); | |
281 | if (rec->u.reg.len > sizeof (rec->u.reg.u.buf)) | |
282 | rec->u.reg.u.ptr = (gdb_byte *) xmalloc (rec->u.reg.len); | |
283 | ||
284 | return rec; | |
285 | } | |
286 | ||
88d1aa9d | 287 | /* Free a record_full_reg record entry. */ |
d02ed0bb MM |
288 | |
289 | static inline void | |
88d1aa9d | 290 | record_full_reg_release (struct record_full_entry *rec) |
d02ed0bb | 291 | { |
88d1aa9d | 292 | gdb_assert (rec->type == record_full_reg); |
d02ed0bb MM |
293 | if (rec->u.reg.len > sizeof (rec->u.reg.u.buf)) |
294 | xfree (rec->u.reg.u.ptr); | |
295 | xfree (rec); | |
296 | } | |
297 | ||
88d1aa9d | 298 | /* Alloc a record_full_mem record entry. */ |
d02ed0bb | 299 | |
88d1aa9d MM |
300 | static inline struct record_full_entry * |
301 | record_full_mem_alloc (CORE_ADDR addr, int len) | |
d02ed0bb | 302 | { |
88d1aa9d | 303 | struct record_full_entry *rec; |
d02ed0bb | 304 | |
88d1aa9d MM |
305 | rec = xcalloc (1, sizeof (struct record_full_entry)); |
306 | rec->type = record_full_mem; | |
d02ed0bb MM |
307 | rec->u.mem.addr = addr; |
308 | rec->u.mem.len = len; | |
309 | if (rec->u.mem.len > sizeof (rec->u.mem.u.buf)) | |
310 | rec->u.mem.u.ptr = (gdb_byte *) xmalloc (len); | |
311 | ||
312 | return rec; | |
313 | } | |
314 | ||
88d1aa9d | 315 | /* Free a record_full_mem record entry. */ |
d02ed0bb MM |
316 | |
317 | static inline void | |
88d1aa9d | 318 | record_full_mem_release (struct record_full_entry *rec) |
d02ed0bb | 319 | { |
88d1aa9d | 320 | gdb_assert (rec->type == record_full_mem); |
d02ed0bb MM |
321 | if (rec->u.mem.len > sizeof (rec->u.mem.u.buf)) |
322 | xfree (rec->u.mem.u.ptr); | |
323 | xfree (rec); | |
324 | } | |
325 | ||
88d1aa9d | 326 | /* Alloc a record_full_end record entry. */ |
d02ed0bb | 327 | |
88d1aa9d MM |
328 | static inline struct record_full_entry * |
329 | record_full_end_alloc (void) | |
d02ed0bb | 330 | { |
88d1aa9d | 331 | struct record_full_entry *rec; |
d02ed0bb | 332 | |
88d1aa9d MM |
333 | rec = xcalloc (1, sizeof (struct record_full_entry)); |
334 | rec->type = record_full_end; | |
d02ed0bb MM |
335 | |
336 | return rec; | |
337 | } | |
338 | ||
88d1aa9d | 339 | /* Free a record_full_end record entry. */ |
d02ed0bb MM |
340 | |
341 | static inline void | |
88d1aa9d | 342 | record_full_end_release (struct record_full_entry *rec) |
d02ed0bb MM |
343 | { |
344 | xfree (rec); | |
345 | } | |
346 | ||
347 | /* Free one record entry, any type. | |
348 | Return entry->type, in case caller wants to know. */ | |
349 | ||
88d1aa9d MM |
350 | static inline enum record_full_type |
351 | record_full_entry_release (struct record_full_entry *rec) | |
d02ed0bb | 352 | { |
88d1aa9d | 353 | enum record_full_type type = rec->type; |
d02ed0bb MM |
354 | |
355 | switch (type) { | |
88d1aa9d MM |
356 | case record_full_reg: |
357 | record_full_reg_release (rec); | |
d02ed0bb | 358 | break; |
88d1aa9d MM |
359 | case record_full_mem: |
360 | record_full_mem_release (rec); | |
d02ed0bb | 361 | break; |
88d1aa9d MM |
362 | case record_full_end: |
363 | record_full_end_release (rec); | |
d02ed0bb MM |
364 | break; |
365 | } | |
366 | return type; | |
367 | } | |
368 | ||
369 | /* Free all record entries in list pointed to by REC. */ | |
370 | ||
371 | static void | |
88d1aa9d | 372 | record_full_list_release (struct record_full_entry *rec) |
d02ed0bb MM |
373 | { |
374 | if (!rec) | |
375 | return; | |
376 | ||
377 | while (rec->next) | |
378 | rec = rec->next; | |
379 | ||
380 | while (rec->prev) | |
381 | { | |
382 | rec = rec->prev; | |
88d1aa9d | 383 | record_full_entry_release (rec->next); |
d02ed0bb MM |
384 | } |
385 | ||
88d1aa9d | 386 | if (rec == &record_full_first) |
d02ed0bb | 387 | { |
88d1aa9d MM |
388 | record_full_insn_num = 0; |
389 | record_full_first.next = NULL; | |
d02ed0bb MM |
390 | } |
391 | else | |
88d1aa9d | 392 | record_full_entry_release (rec); |
d02ed0bb MM |
393 | } |
394 | ||
395 | /* Free all record entries forward of the given list position. */ | |
396 | ||
397 | static void | |
88d1aa9d | 398 | record_full_list_release_following (struct record_full_entry *rec) |
d02ed0bb | 399 | { |
88d1aa9d | 400 | struct record_full_entry *tmp = rec->next; |
d02ed0bb MM |
401 | |
402 | rec->next = NULL; | |
403 | while (tmp) | |
404 | { | |
405 | rec = tmp->next; | |
88d1aa9d | 406 | if (record_full_entry_release (tmp) == record_full_end) |
d02ed0bb | 407 | { |
88d1aa9d MM |
408 | record_full_insn_num--; |
409 | record_full_insn_count--; | |
d02ed0bb MM |
410 | } |
411 | tmp = rec; | |
412 | } | |
413 | } | |
414 | ||
415 | /* Delete the first instruction from the beginning of the log, to make | |
416 | room for adding a new instruction at the end of the log. | |
417 | ||
88d1aa9d | 418 | Note -- this function does not modify record_full_insn_num. */ |
d02ed0bb MM |
419 | |
420 | static void | |
88d1aa9d | 421 | record_full_list_release_first (void) |
d02ed0bb | 422 | { |
88d1aa9d | 423 | struct record_full_entry *tmp; |
d02ed0bb | 424 | |
88d1aa9d | 425 | if (!record_full_first.next) |
d02ed0bb MM |
426 | return; |
427 | ||
88d1aa9d | 428 | /* Loop until a record_full_end. */ |
d02ed0bb MM |
429 | while (1) |
430 | { | |
88d1aa9d MM |
431 | /* Cut record_full_first.next out of the linked list. */ |
432 | tmp = record_full_first.next; | |
433 | record_full_first.next = tmp->next; | |
434 | tmp->next->prev = &record_full_first; | |
d02ed0bb MM |
435 | |
436 | /* tmp is now isolated, and can be deleted. */ | |
88d1aa9d MM |
437 | if (record_full_entry_release (tmp) == record_full_end) |
438 | break; /* End loop at first record_full_end. */ | |
d02ed0bb | 439 | |
88d1aa9d | 440 | if (!record_full_first.next) |
d02ed0bb | 441 | { |
88d1aa9d | 442 | gdb_assert (record_full_insn_num == 1); |
d02ed0bb MM |
443 | break; /* End loop when list is empty. */ |
444 | } | |
445 | } | |
446 | } | |
447 | ||
88d1aa9d | 448 | /* Add a struct record_full_entry to record_full_arch_list. */ |
d02ed0bb MM |
449 | |
450 | static void | |
88d1aa9d | 451 | record_full_arch_list_add (struct record_full_entry *rec) |
d02ed0bb MM |
452 | { |
453 | if (record_debug > 1) | |
454 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 455 | "Process record: record_full_arch_list_add %s.\n", |
d02ed0bb MM |
456 | host_address_to_string (rec)); |
457 | ||
88d1aa9d | 458 | if (record_full_arch_list_tail) |
d02ed0bb | 459 | { |
88d1aa9d MM |
460 | record_full_arch_list_tail->next = rec; |
461 | rec->prev = record_full_arch_list_tail; | |
462 | record_full_arch_list_tail = rec; | |
d02ed0bb MM |
463 | } |
464 | else | |
465 | { | |
88d1aa9d MM |
466 | record_full_arch_list_head = rec; |
467 | record_full_arch_list_tail = rec; | |
d02ed0bb MM |
468 | } |
469 | } | |
470 | ||
471 | /* Return the value storage location of a record entry. */ | |
472 | static inline gdb_byte * | |
88d1aa9d | 473 | record_full_get_loc (struct record_full_entry *rec) |
d02ed0bb MM |
474 | { |
475 | switch (rec->type) { | |
88d1aa9d | 476 | case record_full_mem: |
d02ed0bb MM |
477 | if (rec->u.mem.len > sizeof (rec->u.mem.u.buf)) |
478 | return rec->u.mem.u.ptr; | |
479 | else | |
480 | return rec->u.mem.u.buf; | |
88d1aa9d | 481 | case record_full_reg: |
d02ed0bb MM |
482 | if (rec->u.reg.len > sizeof (rec->u.reg.u.buf)) |
483 | return rec->u.reg.u.ptr; | |
484 | else | |
485 | return rec->u.reg.u.buf; | |
88d1aa9d | 486 | case record_full_end: |
d02ed0bb | 487 | default: |
88d1aa9d | 488 | gdb_assert_not_reached ("unexpected record_full_entry type"); |
d02ed0bb MM |
489 | return NULL; |
490 | } | |
491 | } | |
492 | ||
88d1aa9d | 493 | /* Record the value of a register NUM to record_full_arch_list. */ |
d02ed0bb MM |
494 | |
495 | int | |
25ea693b | 496 | record_full_arch_list_add_reg (struct regcache *regcache, int regnum) |
d02ed0bb | 497 | { |
88d1aa9d | 498 | struct record_full_entry *rec; |
d02ed0bb MM |
499 | |
500 | if (record_debug > 1) | |
501 | fprintf_unfiltered (gdb_stdlog, | |
502 | "Process record: add register num = %d to " | |
503 | "record list.\n", | |
504 | regnum); | |
505 | ||
88d1aa9d | 506 | rec = record_full_reg_alloc (regcache, regnum); |
d02ed0bb | 507 | |
88d1aa9d | 508 | regcache_raw_read (regcache, regnum, record_full_get_loc (rec)); |
d02ed0bb | 509 | |
88d1aa9d | 510 | record_full_arch_list_add (rec); |
d02ed0bb MM |
511 | |
512 | return 0; | |
513 | } | |
514 | ||
515 | /* Record the value of a region of memory whose address is ADDR and | |
88d1aa9d | 516 | length is LEN to record_full_arch_list. */ |
d02ed0bb MM |
517 | |
518 | int | |
25ea693b | 519 | record_full_arch_list_add_mem (CORE_ADDR addr, int len) |
d02ed0bb | 520 | { |
88d1aa9d | 521 | struct record_full_entry *rec; |
d02ed0bb MM |
522 | |
523 | if (record_debug > 1) | |
524 | fprintf_unfiltered (gdb_stdlog, | |
525 | "Process record: add mem addr = %s len = %d to " | |
526 | "record list.\n", | |
527 | paddress (target_gdbarch (), addr), len); | |
528 | ||
529 | if (!addr) /* FIXME: Why? Some arch must permit it... */ | |
530 | return 0; | |
531 | ||
88d1aa9d | 532 | rec = record_full_mem_alloc (addr, len); |
d02ed0bb | 533 | |
88d1aa9d MM |
534 | if (record_read_memory (target_gdbarch (), addr, |
535 | record_full_get_loc (rec), len)) | |
d02ed0bb | 536 | { |
88d1aa9d | 537 | record_full_mem_release (rec); |
d02ed0bb MM |
538 | return -1; |
539 | } | |
540 | ||
88d1aa9d | 541 | record_full_arch_list_add (rec); |
d02ed0bb MM |
542 | |
543 | return 0; | |
544 | } | |
545 | ||
88d1aa9d MM |
546 | /* Add a record_full_end type struct record_full_entry to |
547 | record_full_arch_list. */ | |
d02ed0bb MM |
548 | |
549 | int | |
25ea693b | 550 | record_full_arch_list_add_end (void) |
d02ed0bb | 551 | { |
88d1aa9d | 552 | struct record_full_entry *rec; |
d02ed0bb MM |
553 | |
554 | if (record_debug > 1) | |
555 | fprintf_unfiltered (gdb_stdlog, | |
556 | "Process record: add end to arch list.\n"); | |
557 | ||
88d1aa9d | 558 | rec = record_full_end_alloc (); |
d02ed0bb | 559 | rec->u.end.sigval = GDB_SIGNAL_0; |
88d1aa9d | 560 | rec->u.end.insn_num = ++record_full_insn_count; |
d02ed0bb | 561 | |
88d1aa9d | 562 | record_full_arch_list_add (rec); |
d02ed0bb MM |
563 | |
564 | return 0; | |
565 | } | |
566 | ||
567 | static void | |
88d1aa9d | 568 | record_full_check_insn_num (int set_terminal) |
d02ed0bb | 569 | { |
7ee70bf5 | 570 | if (record_full_insn_num == record_full_insn_max_num) |
d02ed0bb | 571 | { |
7ee70bf5 PA |
572 | /* Ask user what to do. */ |
573 | if (record_full_stop_at_limit) | |
d02ed0bb | 574 | { |
7ee70bf5 PA |
575 | int q; |
576 | ||
577 | if (set_terminal) | |
578 | target_terminal_ours (); | |
579 | q = yquery (_("Do you want to auto delete previous execution " | |
580 | "log entries when record/replay buffer becomes " | |
581 | "full (record full stop-at-limit)?")); | |
582 | if (set_terminal) | |
583 | target_terminal_inferior (); | |
584 | if (q) | |
585 | record_full_stop_at_limit = 0; | |
586 | else | |
587 | error (_("Process record: stopped by user.")); | |
d02ed0bb MM |
588 | } |
589 | } | |
590 | } | |
591 | ||
592 | static void | |
88d1aa9d | 593 | record_full_arch_list_cleanups (void *ignore) |
d02ed0bb | 594 | { |
88d1aa9d | 595 | record_full_list_release (record_full_arch_list_tail); |
d02ed0bb MM |
596 | } |
597 | ||
598 | /* Before inferior step (when GDB record the running message, inferior | |
599 | only can step), GDB will call this function to record the values to | |
88d1aa9d | 600 | record_full_list. This function will call gdbarch_process_record to |
d02ed0bb | 601 | record the running message of inferior and set them to |
88d1aa9d | 602 | record_full_arch_list, and add it to record_full_list. */ |
d02ed0bb MM |
603 | |
604 | static int | |
88d1aa9d | 605 | record_full_message (struct regcache *regcache, enum gdb_signal signal) |
d02ed0bb MM |
606 | { |
607 | int ret; | |
608 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
88d1aa9d MM |
609 | struct cleanup *old_cleanups |
610 | = make_cleanup (record_full_arch_list_cleanups, 0); | |
d02ed0bb | 611 | |
88d1aa9d MM |
612 | record_full_arch_list_head = NULL; |
613 | record_full_arch_list_tail = NULL; | |
d02ed0bb | 614 | |
88d1aa9d MM |
615 | /* Check record_full_insn_num. */ |
616 | record_full_check_insn_num (1); | |
d02ed0bb MM |
617 | |
618 | /* If gdb sends a signal value to target_resume, | |
619 | save it in the 'end' field of the previous instruction. | |
620 | ||
621 | Maybe process record should record what really happened, | |
622 | rather than what gdb pretends has happened. | |
623 | ||
624 | So if Linux delivered the signal to the child process during | |
625 | the record mode, we will record it and deliver it again in | |
626 | the replay mode. | |
627 | ||
628 | If user says "ignore this signal" during the record mode, then | |
629 | it will be ignored again during the replay mode (no matter if | |
630 | the user says something different, like "deliver this signal" | |
631 | during the replay mode). | |
632 | ||
633 | User should understand that nothing he does during the replay | |
634 | mode will change the behavior of the child. If he tries, | |
635 | then that is a user error. | |
636 | ||
637 | But we should still deliver the signal to gdb during the replay, | |
638 | if we delivered it during the recording. Therefore we should | |
88d1aa9d MM |
639 | record the signal during record_full_wait, not |
640 | record_full_resume. */ | |
641 | if (record_full_list != &record_full_first) /* FIXME better way to check */ | |
d02ed0bb | 642 | { |
88d1aa9d MM |
643 | gdb_assert (record_full_list->type == record_full_end); |
644 | record_full_list->u.end.sigval = signal; | |
d02ed0bb MM |
645 | } |
646 | ||
647 | if (signal == GDB_SIGNAL_0 | |
648 | || !gdbarch_process_record_signal_p (gdbarch)) | |
649 | ret = gdbarch_process_record (gdbarch, | |
650 | regcache, | |
651 | regcache_read_pc (regcache)); | |
652 | else | |
653 | ret = gdbarch_process_record_signal (gdbarch, | |
654 | regcache, | |
655 | signal); | |
656 | ||
657 | if (ret > 0) | |
658 | error (_("Process record: inferior program stopped.")); | |
659 | if (ret < 0) | |
660 | error (_("Process record: failed to record execution log.")); | |
661 | ||
662 | discard_cleanups (old_cleanups); | |
663 | ||
88d1aa9d MM |
664 | record_full_list->next = record_full_arch_list_head; |
665 | record_full_arch_list_head->prev = record_full_list; | |
666 | record_full_list = record_full_arch_list_tail; | |
d02ed0bb | 667 | |
7ee70bf5 | 668 | if (record_full_insn_num == record_full_insn_max_num) |
88d1aa9d | 669 | record_full_list_release_first (); |
d02ed0bb | 670 | else |
88d1aa9d | 671 | record_full_insn_num++; |
d02ed0bb MM |
672 | |
673 | return 1; | |
674 | } | |
675 | ||
88d1aa9d | 676 | struct record_full_message_args { |
d02ed0bb MM |
677 | struct regcache *regcache; |
678 | enum gdb_signal signal; | |
679 | }; | |
680 | ||
681 | static int | |
88d1aa9d | 682 | record_full_message_wrapper (void *args) |
d02ed0bb | 683 | { |
88d1aa9d | 684 | struct record_full_message_args *record_full_args = args; |
d02ed0bb | 685 | |
88d1aa9d MM |
686 | return record_full_message (record_full_args->regcache, |
687 | record_full_args->signal); | |
d02ed0bb MM |
688 | } |
689 | ||
690 | static int | |
88d1aa9d MM |
691 | record_full_message_wrapper_safe (struct regcache *regcache, |
692 | enum gdb_signal signal) | |
d02ed0bb | 693 | { |
88d1aa9d | 694 | struct record_full_message_args args; |
d02ed0bb MM |
695 | |
696 | args.regcache = regcache; | |
697 | args.signal = signal; | |
698 | ||
88d1aa9d MM |
699 | return catch_errors (record_full_message_wrapper, &args, NULL, |
700 | RETURN_MASK_ALL); | |
d02ed0bb MM |
701 | } |
702 | ||
88d1aa9d | 703 | /* Set to 1 if record_full_store_registers and record_full_xfer_partial |
d02ed0bb MM |
704 | doesn't need record. */ |
705 | ||
88d1aa9d | 706 | static int record_full_gdb_operation_disable = 0; |
d02ed0bb MM |
707 | |
708 | struct cleanup * | |
25ea693b | 709 | record_full_gdb_operation_disable_set (void) |
d02ed0bb MM |
710 | { |
711 | struct cleanup *old_cleanups = NULL; | |
712 | ||
713 | old_cleanups = | |
88d1aa9d MM |
714 | make_cleanup_restore_integer (&record_full_gdb_operation_disable); |
715 | record_full_gdb_operation_disable = 1; | |
d02ed0bb MM |
716 | |
717 | return old_cleanups; | |
718 | } | |
719 | ||
720 | /* Flag set to TRUE for target_stopped_by_watchpoint. */ | |
88d1aa9d | 721 | static int record_full_hw_watchpoint = 0; |
d02ed0bb MM |
722 | |
723 | /* Execute one instruction from the record log. Each instruction in | |
724 | the log will be represented by an arbitrary sequence of register | |
725 | entries and memory entries, followed by an 'end' entry. */ | |
726 | ||
727 | static inline void | |
88d1aa9d MM |
728 | record_full_exec_insn (struct regcache *regcache, |
729 | struct gdbarch *gdbarch, | |
730 | struct record_full_entry *entry) | |
d02ed0bb MM |
731 | { |
732 | switch (entry->type) | |
733 | { | |
88d1aa9d | 734 | case record_full_reg: /* reg */ |
d02ed0bb MM |
735 | { |
736 | gdb_byte reg[MAX_REGISTER_SIZE]; | |
737 | ||
738 | if (record_debug > 1) | |
739 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 740 | "Process record: record_full_reg %s to " |
d02ed0bb MM |
741 | "inferior num = %d.\n", |
742 | host_address_to_string (entry), | |
743 | entry->u.reg.num); | |
744 | ||
745 | regcache_cooked_read (regcache, entry->u.reg.num, reg); | |
746 | regcache_cooked_write (regcache, entry->u.reg.num, | |
88d1aa9d MM |
747 | record_full_get_loc (entry)); |
748 | memcpy (record_full_get_loc (entry), reg, entry->u.reg.len); | |
d02ed0bb MM |
749 | } |
750 | break; | |
751 | ||
88d1aa9d | 752 | case record_full_mem: /* mem */ |
d02ed0bb MM |
753 | { |
754 | /* Nothing to do if the entry is flagged not_accessible. */ | |
755 | if (!entry->u.mem.mem_entry_not_accessible) | |
756 | { | |
757 | gdb_byte *mem = alloca (entry->u.mem.len); | |
758 | ||
759 | if (record_debug > 1) | |
760 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 761 | "Process record: record_full_mem %s to " |
d02ed0bb MM |
762 | "inferior addr = %s len = %d.\n", |
763 | host_address_to_string (entry), | |
764 | paddress (gdbarch, entry->u.mem.addr), | |
765 | entry->u.mem.len); | |
766 | ||
767 | if (record_read_memory (gdbarch, | |
768 | entry->u.mem.addr, mem, entry->u.mem.len)) | |
769 | entry->u.mem.mem_entry_not_accessible = 1; | |
770 | else | |
771 | { | |
772 | if (target_write_memory (entry->u.mem.addr, | |
88d1aa9d | 773 | record_full_get_loc (entry), |
d02ed0bb MM |
774 | entry->u.mem.len)) |
775 | { | |
776 | entry->u.mem.mem_entry_not_accessible = 1; | |
777 | if (record_debug) | |
778 | warning (_("Process record: error writing memory at " | |
779 | "addr = %s len = %d."), | |
780 | paddress (gdbarch, entry->u.mem.addr), | |
781 | entry->u.mem.len); | |
782 | } | |
783 | else | |
784 | { | |
88d1aa9d MM |
785 | memcpy (record_full_get_loc (entry), mem, |
786 | entry->u.mem.len); | |
d02ed0bb MM |
787 | |
788 | /* We've changed memory --- check if a hardware | |
789 | watchpoint should trap. Note that this | |
790 | presently assumes the target beneath supports | |
791 | continuable watchpoints. On non-continuable | |
792 | watchpoints target, we'll want to check this | |
793 | _before_ actually doing the memory change, and | |
794 | not doing the change at all if the watchpoint | |
795 | traps. */ | |
796 | if (hardware_watchpoint_inserted_in_range | |
797 | (get_regcache_aspace (regcache), | |
798 | entry->u.mem.addr, entry->u.mem.len)) | |
88d1aa9d | 799 | record_full_hw_watchpoint = 1; |
d02ed0bb MM |
800 | } |
801 | } | |
802 | } | |
803 | } | |
804 | break; | |
805 | } | |
806 | } | |
807 | ||
808 | static struct target_ops *tmp_to_resume_ops; | |
809 | static void (*tmp_to_resume) (struct target_ops *, ptid_t, int, | |
810 | enum gdb_signal); | |
811 | static struct target_ops *tmp_to_wait_ops; | |
812 | static ptid_t (*tmp_to_wait) (struct target_ops *, ptid_t, | |
813 | struct target_waitstatus *, | |
814 | int); | |
815 | static struct target_ops *tmp_to_store_registers_ops; | |
816 | static void (*tmp_to_store_registers) (struct target_ops *, | |
817 | struct regcache *, | |
818 | int regno); | |
819 | static struct target_ops *tmp_to_xfer_partial_ops; | |
4ac248ca | 820 | static target_xfer_partial_ftype *tmp_to_xfer_partial; |
3db08215 | 821 | static int (*tmp_to_insert_breakpoint) (struct target_ops *, struct gdbarch *, |
d02ed0bb | 822 | struct bp_target_info *); |
3db08215 MM |
823 | static struct target_ops *tmp_to_insert_breakpoint_ops; |
824 | static int (*tmp_to_remove_breakpoint) (struct target_ops *, struct gdbarch *, | |
d02ed0bb | 825 | struct bp_target_info *); |
3db08215 | 826 | static struct target_ops *tmp_to_remove_breakpoint_ops; |
d02ed0bb MM |
827 | static int (*tmp_to_stopped_by_watchpoint) (void); |
828 | static int (*tmp_to_stopped_data_address) (struct target_ops *, CORE_ADDR *); | |
829 | static int (*tmp_to_stopped_data_address) (struct target_ops *, CORE_ADDR *); | |
830 | static void (*tmp_to_async) (void (*) (enum inferior_event_type, void *), void *); | |
831 | ||
88d1aa9d | 832 | static void record_full_restore (void); |
d02ed0bb MM |
833 | |
834 | /* Asynchronous signal handle registered as event loop source for when | |
835 | we have pending events ready to be passed to the core. */ | |
836 | ||
88d1aa9d | 837 | static struct async_event_handler *record_full_async_inferior_event_token; |
d02ed0bb MM |
838 | |
839 | static void | |
88d1aa9d | 840 | record_full_async_inferior_event_handler (gdb_client_data data) |
d02ed0bb MM |
841 | { |
842 | inferior_event_handler (INF_REG_EVENT, NULL); | |
843 | } | |
844 | ||
845 | /* Open the process record target. */ | |
846 | ||
847 | static void | |
88d1aa9d | 848 | record_full_core_open_1 (char *name, int from_tty) |
d02ed0bb MM |
849 | { |
850 | struct regcache *regcache = get_current_regcache (); | |
851 | int regnum = gdbarch_num_regs (get_regcache_arch (regcache)); | |
852 | int i; | |
853 | ||
88d1aa9d | 854 | /* Get record_full_core_regbuf. */ |
d02ed0bb | 855 | target_fetch_registers (regcache, -1); |
88d1aa9d | 856 | record_full_core_regbuf = xmalloc (MAX_REGISTER_SIZE * regnum); |
d02ed0bb MM |
857 | for (i = 0; i < regnum; i ++) |
858 | regcache_raw_collect (regcache, i, | |
88d1aa9d | 859 | record_full_core_regbuf + MAX_REGISTER_SIZE * i); |
d02ed0bb | 860 | |
88d1aa9d MM |
861 | /* Get record_full_core_start and record_full_core_end. */ |
862 | if (build_section_table (core_bfd, &record_full_core_start, | |
863 | &record_full_core_end)) | |
d02ed0bb | 864 | { |
88d1aa9d MM |
865 | xfree (record_full_core_regbuf); |
866 | record_full_core_regbuf = NULL; | |
d02ed0bb MM |
867 | error (_("\"%s\": Can't find sections: %s"), |
868 | bfd_get_filename (core_bfd), bfd_errmsg (bfd_get_error ())); | |
869 | } | |
870 | ||
88d1aa9d MM |
871 | push_target (&record_full_core_ops); |
872 | record_full_restore (); | |
d02ed0bb MM |
873 | } |
874 | ||
875 | /* "to_open" target method for 'live' processes. */ | |
876 | ||
877 | static void | |
88d1aa9d | 878 | record_full_open_1 (char *name, int from_tty) |
d02ed0bb MM |
879 | { |
880 | if (record_debug) | |
88d1aa9d | 881 | fprintf_unfiltered (gdb_stdlog, "Process record: record_full_open\n"); |
d02ed0bb MM |
882 | |
883 | /* check exec */ | |
884 | if (!target_has_execution) | |
885 | error (_("Process record: the program is not being run.")); | |
886 | if (non_stop) | |
887 | error (_("Process record target can't debug inferior in non-stop mode " | |
888 | "(non-stop).")); | |
889 | ||
890 | if (!gdbarch_process_record_p (target_gdbarch ())) | |
891 | error (_("Process record: the current architecture doesn't support " | |
892 | "record function.")); | |
893 | ||
894 | if (!tmp_to_resume) | |
895 | error (_("Could not find 'to_resume' method on the target stack.")); | |
896 | if (!tmp_to_wait) | |
897 | error (_("Could not find 'to_wait' method on the target stack.")); | |
898 | if (!tmp_to_store_registers) | |
899 | error (_("Could not find 'to_store_registers' " | |
900 | "method on the target stack.")); | |
901 | if (!tmp_to_insert_breakpoint) | |
902 | error (_("Could not find 'to_insert_breakpoint' " | |
903 | "method on the target stack.")); | |
904 | if (!tmp_to_remove_breakpoint) | |
905 | error (_("Could not find 'to_remove_breakpoint' " | |
906 | "method on the target stack.")); | |
907 | if (!tmp_to_stopped_by_watchpoint) | |
908 | error (_("Could not find 'to_stopped_by_watchpoint' " | |
909 | "method on the target stack.")); | |
910 | if (!tmp_to_stopped_data_address) | |
911 | error (_("Could not find 'to_stopped_data_address' " | |
912 | "method on the target stack.")); | |
913 | ||
88d1aa9d | 914 | push_target (&record_full_ops); |
d02ed0bb MM |
915 | } |
916 | ||
88d1aa9d | 917 | static void record_full_init_record_breakpoints (void); |
d02ed0bb MM |
918 | |
919 | /* "to_open" target method. Open the process record target. */ | |
920 | ||
921 | static void | |
88d1aa9d | 922 | record_full_open (char *name, int from_tty) |
d02ed0bb MM |
923 | { |
924 | struct target_ops *t; | |
925 | ||
926 | if (record_debug) | |
88d1aa9d | 927 | fprintf_unfiltered (gdb_stdlog, "Process record: record_full_open\n"); |
d02ed0bb | 928 | |
8213266a | 929 | record_preopen (); |
d02ed0bb MM |
930 | |
931 | /* Reset the tmp beneath pointers. */ | |
932 | tmp_to_resume_ops = NULL; | |
933 | tmp_to_resume = NULL; | |
934 | tmp_to_wait_ops = NULL; | |
935 | tmp_to_wait = NULL; | |
936 | tmp_to_store_registers_ops = NULL; | |
937 | tmp_to_store_registers = NULL; | |
938 | tmp_to_xfer_partial_ops = NULL; | |
939 | tmp_to_xfer_partial = NULL; | |
940 | tmp_to_insert_breakpoint = NULL; | |
941 | tmp_to_remove_breakpoint = NULL; | |
942 | tmp_to_stopped_by_watchpoint = NULL; | |
943 | tmp_to_stopped_data_address = NULL; | |
944 | tmp_to_async = NULL; | |
3db08215 MM |
945 | tmp_to_insert_breakpoint_ops = NULL; |
946 | tmp_to_remove_breakpoint_ops = NULL; | |
d02ed0bb MM |
947 | |
948 | /* Set the beneath function pointers. */ | |
949 | for (t = current_target.beneath; t != NULL; t = t->beneath) | |
950 | { | |
951 | if (!tmp_to_resume) | |
952 | { | |
953 | tmp_to_resume = t->to_resume; | |
954 | tmp_to_resume_ops = t; | |
955 | } | |
956 | if (!tmp_to_wait) | |
957 | { | |
958 | tmp_to_wait = t->to_wait; | |
959 | tmp_to_wait_ops = t; | |
960 | } | |
961 | if (!tmp_to_store_registers) | |
962 | { | |
963 | tmp_to_store_registers = t->to_store_registers; | |
964 | tmp_to_store_registers_ops = t; | |
965 | } | |
966 | if (!tmp_to_xfer_partial) | |
967 | { | |
968 | tmp_to_xfer_partial = t->to_xfer_partial; | |
969 | tmp_to_xfer_partial_ops = t; | |
970 | } | |
971 | if (!tmp_to_insert_breakpoint) | |
3db08215 MM |
972 | { |
973 | tmp_to_insert_breakpoint = t->to_insert_breakpoint; | |
974 | tmp_to_insert_breakpoint_ops = t; | |
975 | } | |
d02ed0bb | 976 | if (!tmp_to_remove_breakpoint) |
3db08215 MM |
977 | { |
978 | tmp_to_remove_breakpoint = t->to_remove_breakpoint; | |
979 | tmp_to_remove_breakpoint_ops = t; | |
980 | } | |
d02ed0bb MM |
981 | if (!tmp_to_stopped_by_watchpoint) |
982 | tmp_to_stopped_by_watchpoint = t->to_stopped_by_watchpoint; | |
983 | if (!tmp_to_stopped_data_address) | |
984 | tmp_to_stopped_data_address = t->to_stopped_data_address; | |
985 | if (!tmp_to_async) | |
986 | tmp_to_async = t->to_async; | |
987 | } | |
988 | if (!tmp_to_xfer_partial) | |
989 | error (_("Could not find 'to_xfer_partial' method on the target stack.")); | |
990 | ||
991 | /* Reset */ | |
88d1aa9d MM |
992 | record_full_insn_num = 0; |
993 | record_full_insn_count = 0; | |
994 | record_full_list = &record_full_first; | |
995 | record_full_list->next = NULL; | |
d02ed0bb MM |
996 | |
997 | /* Set the tmp beneath pointers to beneath pointers. */ | |
88d1aa9d MM |
998 | record_full_beneath_to_resume_ops = tmp_to_resume_ops; |
999 | record_full_beneath_to_resume = tmp_to_resume; | |
1000 | record_full_beneath_to_wait_ops = tmp_to_wait_ops; | |
1001 | record_full_beneath_to_wait = tmp_to_wait; | |
1002 | record_full_beneath_to_store_registers_ops = tmp_to_store_registers_ops; | |
1003 | record_full_beneath_to_store_registers = tmp_to_store_registers; | |
1004 | record_full_beneath_to_xfer_partial_ops = tmp_to_xfer_partial_ops; | |
1005 | record_full_beneath_to_xfer_partial = tmp_to_xfer_partial; | |
1006 | record_full_beneath_to_insert_breakpoint = tmp_to_insert_breakpoint; | |
3db08215 | 1007 | record_full_beneath_to_insert_breakpoint_ops = tmp_to_insert_breakpoint_ops; |
88d1aa9d | 1008 | record_full_beneath_to_remove_breakpoint = tmp_to_remove_breakpoint; |
3db08215 | 1009 | record_full_beneath_to_remove_breakpoint_ops = tmp_to_remove_breakpoint_ops; |
88d1aa9d MM |
1010 | record_full_beneath_to_stopped_by_watchpoint = tmp_to_stopped_by_watchpoint; |
1011 | record_full_beneath_to_stopped_data_address = tmp_to_stopped_data_address; | |
1012 | record_full_beneath_to_async = tmp_to_async; | |
d02ed0bb MM |
1013 | |
1014 | if (core_bfd) | |
88d1aa9d | 1015 | record_full_core_open_1 (name, from_tty); |
d02ed0bb | 1016 | else |
88d1aa9d | 1017 | record_full_open_1 (name, from_tty); |
d02ed0bb MM |
1018 | |
1019 | /* Register extra event sources in the event loop. */ | |
88d1aa9d MM |
1020 | record_full_async_inferior_event_token |
1021 | = create_async_event_handler (record_full_async_inferior_event_handler, | |
d02ed0bb MM |
1022 | NULL); |
1023 | ||
88d1aa9d | 1024 | record_full_init_record_breakpoints (); |
d02ed0bb MM |
1025 | |
1026 | observer_notify_record_changed (current_inferior (), 1); | |
1027 | } | |
1028 | ||
1029 | /* "to_close" target method. Close the process record target. */ | |
1030 | ||
1031 | static void | |
460014f5 | 1032 | record_full_close (void) |
d02ed0bb | 1033 | { |
88d1aa9d | 1034 | struct record_full_core_buf_entry *entry; |
d02ed0bb MM |
1035 | |
1036 | if (record_debug) | |
88d1aa9d | 1037 | fprintf_unfiltered (gdb_stdlog, "Process record: record_full_close\n"); |
d02ed0bb | 1038 | |
88d1aa9d | 1039 | record_full_list_release (record_full_list); |
d02ed0bb | 1040 | |
88d1aa9d MM |
1041 | /* Release record_full_core_regbuf. */ |
1042 | if (record_full_core_regbuf) | |
d02ed0bb | 1043 | { |
88d1aa9d MM |
1044 | xfree (record_full_core_regbuf); |
1045 | record_full_core_regbuf = NULL; | |
d02ed0bb MM |
1046 | } |
1047 | ||
88d1aa9d MM |
1048 | /* Release record_full_core_buf_list. */ |
1049 | if (record_full_core_buf_list) | |
d02ed0bb | 1050 | { |
88d1aa9d MM |
1051 | for (entry = record_full_core_buf_list->prev; entry; |
1052 | entry = entry->prev) | |
d02ed0bb | 1053 | { |
88d1aa9d MM |
1054 | xfree (record_full_core_buf_list); |
1055 | record_full_core_buf_list = entry; | |
d02ed0bb | 1056 | } |
88d1aa9d | 1057 | record_full_core_buf_list = NULL; |
d02ed0bb MM |
1058 | } |
1059 | ||
88d1aa9d MM |
1060 | if (record_full_async_inferior_event_token) |
1061 | delete_async_event_handler (&record_full_async_inferior_event_token); | |
d02ed0bb MM |
1062 | } |
1063 | ||
88d1aa9d | 1064 | static int record_full_resume_step = 0; |
d02ed0bb | 1065 | |
88d1aa9d MM |
1066 | /* True if we've been resumed, and so each record_full_wait call should |
1067 | advance execution. If this is false, record_full_wait will return a | |
d02ed0bb | 1068 | TARGET_WAITKIND_IGNORE. */ |
88d1aa9d | 1069 | static int record_full_resumed = 0; |
d02ed0bb MM |
1070 | |
1071 | /* The execution direction of the last resume we got. This is | |
1072 | necessary for async mode. Vis (order is not strictly accurate): | |
1073 | ||
1074 | 1. user has the global execution direction set to forward | |
1075 | 2. user does a reverse-step command | |
88d1aa9d | 1076 | 3. record_full_resume is called with global execution direction |
d02ed0bb MM |
1077 | temporarily switched to reverse |
1078 | 4. GDB's execution direction is reverted back to forward | |
1079 | 5. target record notifies event loop there's an event to handle | |
1080 | 6. infrun asks the target which direction was it going, and switches | |
1081 | the global execution direction accordingly (to reverse) | |
1082 | 7. infrun polls an event out of the record target, and handles it | |
1083 | 8. GDB goes back to the event loop, and goto #4. | |
1084 | */ | |
88d1aa9d | 1085 | static enum exec_direction_kind record_full_execution_dir = EXEC_FORWARD; |
d02ed0bb MM |
1086 | |
1087 | /* "to_resume" target method. Resume the process record target. */ | |
1088 | ||
1089 | static void | |
88d1aa9d MM |
1090 | record_full_resume (struct target_ops *ops, ptid_t ptid, int step, |
1091 | enum gdb_signal signal) | |
d02ed0bb | 1092 | { |
88d1aa9d MM |
1093 | record_full_resume_step = step; |
1094 | record_full_resumed = 1; | |
1095 | record_full_execution_dir = execution_direction; | |
d02ed0bb | 1096 | |
88d1aa9d | 1097 | if (!RECORD_FULL_IS_REPLAY) |
d02ed0bb MM |
1098 | { |
1099 | struct gdbarch *gdbarch = target_thread_architecture (ptid); | |
1100 | ||
88d1aa9d | 1101 | record_full_message (get_current_regcache (), signal); |
d02ed0bb MM |
1102 | |
1103 | if (!step) | |
1104 | { | |
1105 | /* This is not hard single step. */ | |
1106 | if (!gdbarch_software_single_step_p (gdbarch)) | |
1107 | { | |
1108 | /* This is a normal continue. */ | |
1109 | step = 1; | |
1110 | } | |
1111 | else | |
1112 | { | |
1113 | /* This arch support soft sigle step. */ | |
1114 | if (single_step_breakpoints_inserted ()) | |
1115 | { | |
1116 | /* This is a soft single step. */ | |
88d1aa9d | 1117 | record_full_resume_step = 1; |
d02ed0bb MM |
1118 | } |
1119 | else | |
1120 | { | |
1121 | /* This is a continue. | |
1122 | Try to insert a soft single step breakpoint. */ | |
1123 | if (!gdbarch_software_single_step (gdbarch, | |
1124 | get_current_frame ())) | |
1125 | { | |
1126 | /* This system don't want use soft single step. | |
1127 | Use hard sigle step. */ | |
1128 | step = 1; | |
1129 | } | |
1130 | } | |
1131 | } | |
1132 | } | |
1133 | ||
1134 | /* Make sure the target beneath reports all signals. */ | |
1135 | target_pass_signals (0, NULL); | |
1136 | ||
88d1aa9d MM |
1137 | record_full_beneath_to_resume (record_full_beneath_to_resume_ops, |
1138 | ptid, step, signal); | |
d02ed0bb MM |
1139 | } |
1140 | ||
1141 | /* We are about to start executing the inferior (or simulate it), | |
1142 | let's register it with the event loop. */ | |
1143 | if (target_can_async_p ()) | |
1144 | { | |
1145 | target_async (inferior_event_handler, 0); | |
1146 | /* Notify the event loop there's an event to wait for. We do | |
88d1aa9d MM |
1147 | most of the work in record_full_wait. */ |
1148 | mark_async_event_handler (record_full_async_inferior_event_token); | |
d02ed0bb MM |
1149 | } |
1150 | } | |
1151 | ||
88d1aa9d | 1152 | static int record_full_get_sig = 0; |
d02ed0bb MM |
1153 | |
1154 | /* SIGINT signal handler, registered by "to_wait" method. */ | |
1155 | ||
1156 | static void | |
88d1aa9d | 1157 | record_full_sig_handler (int signo) |
d02ed0bb MM |
1158 | { |
1159 | if (record_debug) | |
1160 | fprintf_unfiltered (gdb_stdlog, "Process record: get a signal\n"); | |
1161 | ||
1162 | /* It will break the running inferior in replay mode. */ | |
88d1aa9d | 1163 | record_full_resume_step = 1; |
d02ed0bb | 1164 | |
88d1aa9d | 1165 | /* It will let record_full_wait set inferior status to get the signal |
d02ed0bb | 1166 | SIGINT. */ |
88d1aa9d | 1167 | record_full_get_sig = 1; |
d02ed0bb MM |
1168 | } |
1169 | ||
1170 | static void | |
88d1aa9d | 1171 | record_full_wait_cleanups (void *ignore) |
d02ed0bb MM |
1172 | { |
1173 | if (execution_direction == EXEC_REVERSE) | |
1174 | { | |
88d1aa9d MM |
1175 | if (record_full_list->next) |
1176 | record_full_list = record_full_list->next; | |
d02ed0bb MM |
1177 | } |
1178 | else | |
88d1aa9d | 1179 | record_full_list = record_full_list->prev; |
d02ed0bb MM |
1180 | } |
1181 | ||
1182 | /* "to_wait" target method for process record target. | |
1183 | ||
1184 | In record mode, the target is always run in singlestep mode | |
1185 | (even when gdb says to continue). The to_wait method intercepts | |
1186 | the stop events and determines which ones are to be passed on to | |
1187 | gdb. Most stop events are just singlestep events that gdb is not | |
1188 | to know about, so the to_wait method just records them and keeps | |
1189 | singlestepping. | |
1190 | ||
1191 | In replay mode, this function emulates the recorded execution log, | |
1192 | one instruction at a time (forward or backward), and determines | |
1193 | where to stop. */ | |
1194 | ||
1195 | static ptid_t | |
88d1aa9d MM |
1196 | record_full_wait_1 (struct target_ops *ops, |
1197 | ptid_t ptid, struct target_waitstatus *status, | |
1198 | int options) | |
d02ed0bb | 1199 | { |
25ea693b | 1200 | struct cleanup *set_cleanups = record_full_gdb_operation_disable_set (); |
d02ed0bb MM |
1201 | |
1202 | if (record_debug) | |
1203 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d MM |
1204 | "Process record: record_full_wait " |
1205 | "record_full_resume_step = %d, " | |
1206 | "record_full_resumed = %d, direction=%s\n", | |
1207 | record_full_resume_step, record_full_resumed, | |
1208 | record_full_execution_dir == EXEC_FORWARD | |
1209 | ? "forward" : "reverse"); | |
1210 | ||
1211 | if (!record_full_resumed) | |
d02ed0bb MM |
1212 | { |
1213 | gdb_assert ((options & TARGET_WNOHANG) != 0); | |
1214 | ||
1215 | /* No interesting event. */ | |
1216 | status->kind = TARGET_WAITKIND_IGNORE; | |
1217 | return minus_one_ptid; | |
1218 | } | |
1219 | ||
88d1aa9d MM |
1220 | record_full_get_sig = 0; |
1221 | signal (SIGINT, record_full_sig_handler); | |
d02ed0bb | 1222 | |
88d1aa9d | 1223 | if (!RECORD_FULL_IS_REPLAY && ops != &record_full_core_ops) |
d02ed0bb | 1224 | { |
88d1aa9d | 1225 | if (record_full_resume_step) |
d02ed0bb MM |
1226 | { |
1227 | /* This is a single step. */ | |
88d1aa9d MM |
1228 | return record_full_beneath_to_wait (record_full_beneath_to_wait_ops, |
1229 | ptid, status, options); | |
d02ed0bb MM |
1230 | } |
1231 | else | |
1232 | { | |
1233 | /* This is not a single step. */ | |
1234 | ptid_t ret; | |
1235 | CORE_ADDR tmp_pc; | |
1236 | struct gdbarch *gdbarch = target_thread_architecture (inferior_ptid); | |
1237 | ||
1238 | while (1) | |
1239 | { | |
88d1aa9d MM |
1240 | ret = record_full_beneath_to_wait |
1241 | (record_full_beneath_to_wait_ops, ptid, status, options); | |
d02ed0bb MM |
1242 | if (status->kind == TARGET_WAITKIND_IGNORE) |
1243 | { | |
1244 | if (record_debug) | |
1245 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 1246 | "Process record: record_full_wait " |
d02ed0bb MM |
1247 | "target beneath not done yet\n"); |
1248 | return ret; | |
1249 | } | |
1250 | ||
1251 | if (single_step_breakpoints_inserted ()) | |
1252 | remove_single_step_breakpoints (); | |
1253 | ||
88d1aa9d | 1254 | if (record_full_resume_step) |
d02ed0bb MM |
1255 | return ret; |
1256 | ||
1257 | /* Is this a SIGTRAP? */ | |
1258 | if (status->kind == TARGET_WAITKIND_STOPPED | |
1259 | && status->value.sig == GDB_SIGNAL_TRAP) | |
1260 | { | |
1261 | struct regcache *regcache; | |
1262 | struct address_space *aspace; | |
1263 | ||
1264 | /* Yes -- this is likely our single-step finishing, | |
1265 | but check if there's any reason the core would be | |
1266 | interested in the event. */ | |
1267 | ||
1268 | registers_changed (); | |
1269 | regcache = get_current_regcache (); | |
1270 | tmp_pc = regcache_read_pc (regcache); | |
1271 | aspace = get_regcache_aspace (regcache); | |
1272 | ||
1273 | if (target_stopped_by_watchpoint ()) | |
1274 | { | |
1275 | /* Always interested in watchpoints. */ | |
1276 | } | |
1277 | else if (breakpoint_inserted_here_p (aspace, tmp_pc)) | |
1278 | { | |
1279 | /* There is a breakpoint here. Let the core | |
1280 | handle it. */ | |
1281 | if (software_breakpoint_inserted_here_p (aspace, tmp_pc)) | |
1282 | { | |
1283 | struct gdbarch *gdbarch | |
1284 | = get_regcache_arch (regcache); | |
1285 | CORE_ADDR decr_pc_after_break | |
118e6252 | 1286 | = target_decr_pc_after_break (gdbarch); |
d02ed0bb MM |
1287 | if (decr_pc_after_break) |
1288 | regcache_write_pc (regcache, | |
1289 | tmp_pc + decr_pc_after_break); | |
1290 | } | |
1291 | } | |
1292 | else | |
1293 | { | |
1294 | /* This is a single-step trap. Record the | |
1295 | insn and issue another step. | |
1296 | FIXME: this part can be a random SIGTRAP too. | |
1297 | But GDB cannot handle it. */ | |
1298 | int step = 1; | |
1299 | ||
88d1aa9d MM |
1300 | if (!record_full_message_wrapper_safe (regcache, |
1301 | GDB_SIGNAL_0)) | |
d02ed0bb MM |
1302 | { |
1303 | status->kind = TARGET_WAITKIND_STOPPED; | |
1304 | status->value.sig = GDB_SIGNAL_0; | |
1305 | break; | |
1306 | } | |
1307 | ||
1308 | if (gdbarch_software_single_step_p (gdbarch)) | |
1309 | { | |
1310 | /* Try to insert the software single step breakpoint. | |
1311 | If insert success, set step to 0. */ | |
1312 | set_executing (inferior_ptid, 0); | |
1313 | reinit_frame_cache (); | |
1314 | if (gdbarch_software_single_step (gdbarch, | |
1315 | get_current_frame ())) | |
1316 | step = 0; | |
1317 | set_executing (inferior_ptid, 1); | |
1318 | } | |
1319 | ||
1320 | if (record_debug) | |
1321 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d MM |
1322 | "Process record: record_full_wait " |
1323 | "issuing one more step in the " | |
1324 | "target beneath\n"); | |
1325 | record_full_beneath_to_resume | |
1326 | (record_full_beneath_to_resume_ops, ptid, step, | |
1327 | GDB_SIGNAL_0); | |
d02ed0bb MM |
1328 | continue; |
1329 | } | |
1330 | } | |
1331 | ||
1332 | /* The inferior is broken by a breakpoint or a signal. */ | |
1333 | break; | |
1334 | } | |
1335 | ||
1336 | return ret; | |
1337 | } | |
1338 | } | |
1339 | else | |
1340 | { | |
1341 | struct regcache *regcache = get_current_regcache (); | |
1342 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
1343 | struct address_space *aspace = get_regcache_aspace (regcache); | |
1344 | int continue_flag = 1; | |
88d1aa9d MM |
1345 | int first_record_full_end = 1; |
1346 | struct cleanup *old_cleanups | |
1347 | = make_cleanup (record_full_wait_cleanups, 0); | |
d02ed0bb MM |
1348 | CORE_ADDR tmp_pc; |
1349 | ||
88d1aa9d | 1350 | record_full_hw_watchpoint = 0; |
d02ed0bb MM |
1351 | status->kind = TARGET_WAITKIND_STOPPED; |
1352 | ||
1353 | /* Check breakpoint when forward execute. */ | |
1354 | if (execution_direction == EXEC_FORWARD) | |
1355 | { | |
1356 | tmp_pc = regcache_read_pc (regcache); | |
1357 | if (breakpoint_inserted_here_p (aspace, tmp_pc)) | |
1358 | { | |
118e6252 | 1359 | int decr_pc_after_break = target_decr_pc_after_break (gdbarch); |
d02ed0bb MM |
1360 | |
1361 | if (record_debug) | |
1362 | fprintf_unfiltered (gdb_stdlog, | |
1363 | "Process record: break at %s.\n", | |
1364 | paddress (gdbarch, tmp_pc)); | |
1365 | ||
1366 | if (decr_pc_after_break | |
88d1aa9d | 1367 | && !record_full_resume_step |
d02ed0bb MM |
1368 | && software_breakpoint_inserted_here_p (aspace, tmp_pc)) |
1369 | regcache_write_pc (regcache, | |
1370 | tmp_pc + decr_pc_after_break); | |
1371 | goto replay_out; | |
1372 | } | |
1373 | } | |
1374 | ||
1375 | /* If GDB is in terminal_inferior mode, it will not get the signal. | |
1376 | And in GDB replay mode, GDB doesn't need to be in terminal_inferior | |
1377 | mode, because inferior will not executed. | |
1378 | Then set it to terminal_ours to make GDB get the signal. */ | |
1379 | target_terminal_ours (); | |
1380 | ||
88d1aa9d | 1381 | /* In EXEC_FORWARD mode, record_full_list points to the tail of prev |
d02ed0bb | 1382 | instruction. */ |
88d1aa9d MM |
1383 | if (execution_direction == EXEC_FORWARD && record_full_list->next) |
1384 | record_full_list = record_full_list->next; | |
d02ed0bb | 1385 | |
88d1aa9d | 1386 | /* Loop over the record_full_list, looking for the next place to |
d02ed0bb MM |
1387 | stop. */ |
1388 | do | |
1389 | { | |
1390 | /* Check for beginning and end of log. */ | |
1391 | if (execution_direction == EXEC_REVERSE | |
88d1aa9d | 1392 | && record_full_list == &record_full_first) |
d02ed0bb MM |
1393 | { |
1394 | /* Hit beginning of record log in reverse. */ | |
1395 | status->kind = TARGET_WAITKIND_NO_HISTORY; | |
1396 | break; | |
1397 | } | |
88d1aa9d | 1398 | if (execution_direction != EXEC_REVERSE && !record_full_list->next) |
d02ed0bb MM |
1399 | { |
1400 | /* Hit end of record log going forward. */ | |
1401 | status->kind = TARGET_WAITKIND_NO_HISTORY; | |
1402 | break; | |
1403 | } | |
1404 | ||
88d1aa9d | 1405 | record_full_exec_insn (regcache, gdbarch, record_full_list); |
d02ed0bb | 1406 | |
88d1aa9d | 1407 | if (record_full_list->type == record_full_end) |
d02ed0bb MM |
1408 | { |
1409 | if (record_debug > 1) | |
1410 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 1411 | "Process record: record_full_end %s to " |
d02ed0bb | 1412 | "inferior.\n", |
88d1aa9d | 1413 | host_address_to_string (record_full_list)); |
d02ed0bb | 1414 | |
88d1aa9d | 1415 | if (first_record_full_end && execution_direction == EXEC_REVERSE) |
d02ed0bb | 1416 | { |
88d1aa9d MM |
1417 | /* When reverse excute, the first record_full_end is the |
1418 | part of current instruction. */ | |
1419 | first_record_full_end = 0; | |
d02ed0bb MM |
1420 | } |
1421 | else | |
1422 | { | |
88d1aa9d | 1423 | /* In EXEC_REVERSE mode, this is the record_full_end of prev |
d02ed0bb | 1424 | instruction. |
88d1aa9d MM |
1425 | In EXEC_FORWARD mode, this is the record_full_end of |
1426 | current instruction. */ | |
d02ed0bb | 1427 | /* step */ |
88d1aa9d | 1428 | if (record_full_resume_step) |
d02ed0bb MM |
1429 | { |
1430 | if (record_debug > 1) | |
1431 | fprintf_unfiltered (gdb_stdlog, | |
1432 | "Process record: step.\n"); | |
1433 | continue_flag = 0; | |
1434 | } | |
1435 | ||
1436 | /* check breakpoint */ | |
1437 | tmp_pc = regcache_read_pc (regcache); | |
1438 | if (breakpoint_inserted_here_p (aspace, tmp_pc)) | |
1439 | { | |
1440 | int decr_pc_after_break | |
118e6252 | 1441 | = target_decr_pc_after_break (gdbarch); |
d02ed0bb MM |
1442 | |
1443 | if (record_debug) | |
1444 | fprintf_unfiltered (gdb_stdlog, | |
1445 | "Process record: break " | |
1446 | "at %s.\n", | |
1447 | paddress (gdbarch, tmp_pc)); | |
1448 | if (decr_pc_after_break | |
1449 | && execution_direction == EXEC_FORWARD | |
88d1aa9d | 1450 | && !record_full_resume_step |
d02ed0bb MM |
1451 | && software_breakpoint_inserted_here_p (aspace, |
1452 | tmp_pc)) | |
1453 | regcache_write_pc (regcache, | |
1454 | tmp_pc + decr_pc_after_break); | |
1455 | continue_flag = 0; | |
1456 | } | |
1457 | ||
88d1aa9d | 1458 | if (record_full_hw_watchpoint) |
d02ed0bb MM |
1459 | { |
1460 | if (record_debug) | |
1461 | fprintf_unfiltered (gdb_stdlog, | |
1462 | "Process record: hit hw " | |
1463 | "watchpoint.\n"); | |
1464 | continue_flag = 0; | |
1465 | } | |
1466 | /* Check target signal */ | |
88d1aa9d | 1467 | if (record_full_list->u.end.sigval != GDB_SIGNAL_0) |
d02ed0bb MM |
1468 | /* FIXME: better way to check */ |
1469 | continue_flag = 0; | |
1470 | } | |
1471 | } | |
1472 | ||
1473 | if (continue_flag) | |
1474 | { | |
1475 | if (execution_direction == EXEC_REVERSE) | |
1476 | { | |
88d1aa9d MM |
1477 | if (record_full_list->prev) |
1478 | record_full_list = record_full_list->prev; | |
d02ed0bb MM |
1479 | } |
1480 | else | |
1481 | { | |
88d1aa9d MM |
1482 | if (record_full_list->next) |
1483 | record_full_list = record_full_list->next; | |
d02ed0bb MM |
1484 | } |
1485 | } | |
1486 | } | |
1487 | while (continue_flag); | |
1488 | ||
1489 | replay_out: | |
88d1aa9d | 1490 | if (record_full_get_sig) |
d02ed0bb | 1491 | status->value.sig = GDB_SIGNAL_INT; |
88d1aa9d | 1492 | else if (record_full_list->u.end.sigval != GDB_SIGNAL_0) |
d02ed0bb | 1493 | /* FIXME: better way to check */ |
88d1aa9d | 1494 | status->value.sig = record_full_list->u.end.sigval; |
d02ed0bb MM |
1495 | else |
1496 | status->value.sig = GDB_SIGNAL_TRAP; | |
1497 | ||
1498 | discard_cleanups (old_cleanups); | |
1499 | } | |
1500 | ||
1501 | signal (SIGINT, handle_sigint); | |
1502 | ||
1503 | do_cleanups (set_cleanups); | |
1504 | return inferior_ptid; | |
1505 | } | |
1506 | ||
1507 | static ptid_t | |
88d1aa9d MM |
1508 | record_full_wait (struct target_ops *ops, |
1509 | ptid_t ptid, struct target_waitstatus *status, | |
1510 | int options) | |
d02ed0bb MM |
1511 | { |
1512 | ptid_t return_ptid; | |
1513 | ||
88d1aa9d | 1514 | return_ptid = record_full_wait_1 (ops, ptid, status, options); |
d02ed0bb MM |
1515 | if (status->kind != TARGET_WAITKIND_IGNORE) |
1516 | { | |
1517 | /* We're reporting a stop. Make sure any spurious | |
1518 | target_wait(WNOHANG) doesn't advance the target until the | |
1519 | core wants us resumed again. */ | |
88d1aa9d | 1520 | record_full_resumed = 0; |
d02ed0bb MM |
1521 | } |
1522 | return return_ptid; | |
1523 | } | |
1524 | ||
1525 | static int | |
88d1aa9d | 1526 | record_full_stopped_by_watchpoint (void) |
d02ed0bb | 1527 | { |
88d1aa9d MM |
1528 | if (RECORD_FULL_IS_REPLAY) |
1529 | return record_full_hw_watchpoint; | |
d02ed0bb | 1530 | else |
88d1aa9d | 1531 | return record_full_beneath_to_stopped_by_watchpoint (); |
d02ed0bb MM |
1532 | } |
1533 | ||
d02ed0bb | 1534 | static int |
88d1aa9d | 1535 | record_full_stopped_data_address (struct target_ops *ops, CORE_ADDR *addr_p) |
d02ed0bb | 1536 | { |
88d1aa9d | 1537 | if (RECORD_FULL_IS_REPLAY) |
d02ed0bb MM |
1538 | return 0; |
1539 | else | |
88d1aa9d | 1540 | return record_full_beneath_to_stopped_data_address (ops, addr_p); |
d02ed0bb MM |
1541 | } |
1542 | ||
1543 | /* Record registers change (by user or by GDB) to list as an instruction. */ | |
1544 | ||
1545 | static void | |
88d1aa9d | 1546 | record_full_registers_change (struct regcache *regcache, int regnum) |
d02ed0bb | 1547 | { |
88d1aa9d MM |
1548 | /* Check record_full_insn_num. */ |
1549 | record_full_check_insn_num (0); | |
d02ed0bb | 1550 | |
88d1aa9d MM |
1551 | record_full_arch_list_head = NULL; |
1552 | record_full_arch_list_tail = NULL; | |
d02ed0bb MM |
1553 | |
1554 | if (regnum < 0) | |
1555 | { | |
1556 | int i; | |
1557 | ||
1558 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) | |
1559 | { | |
25ea693b | 1560 | if (record_full_arch_list_add_reg (regcache, i)) |
d02ed0bb | 1561 | { |
88d1aa9d | 1562 | record_full_list_release (record_full_arch_list_tail); |
d02ed0bb MM |
1563 | error (_("Process record: failed to record execution log.")); |
1564 | } | |
1565 | } | |
1566 | } | |
1567 | else | |
1568 | { | |
25ea693b | 1569 | if (record_full_arch_list_add_reg (regcache, regnum)) |
d02ed0bb | 1570 | { |
88d1aa9d | 1571 | record_full_list_release (record_full_arch_list_tail); |
d02ed0bb MM |
1572 | error (_("Process record: failed to record execution log.")); |
1573 | } | |
1574 | } | |
25ea693b | 1575 | if (record_full_arch_list_add_end ()) |
d02ed0bb | 1576 | { |
88d1aa9d | 1577 | record_full_list_release (record_full_arch_list_tail); |
d02ed0bb MM |
1578 | error (_("Process record: failed to record execution log.")); |
1579 | } | |
88d1aa9d MM |
1580 | record_full_list->next = record_full_arch_list_head; |
1581 | record_full_arch_list_head->prev = record_full_list; | |
1582 | record_full_list = record_full_arch_list_tail; | |
d02ed0bb | 1583 | |
7ee70bf5 | 1584 | if (record_full_insn_num == record_full_insn_max_num) |
88d1aa9d | 1585 | record_full_list_release_first (); |
d02ed0bb | 1586 | else |
88d1aa9d | 1587 | record_full_insn_num++; |
d02ed0bb MM |
1588 | } |
1589 | ||
1590 | /* "to_store_registers" method for process record target. */ | |
1591 | ||
1592 | static void | |
88d1aa9d MM |
1593 | record_full_store_registers (struct target_ops *ops, |
1594 | struct regcache *regcache, | |
1595 | int regno) | |
d02ed0bb | 1596 | { |
88d1aa9d | 1597 | if (!record_full_gdb_operation_disable) |
d02ed0bb | 1598 | { |
88d1aa9d | 1599 | if (RECORD_FULL_IS_REPLAY) |
d02ed0bb MM |
1600 | { |
1601 | int n; | |
1602 | ||
1603 | /* Let user choose if he wants to write register or not. */ | |
1604 | if (regno < 0) | |
1605 | n = | |
1606 | query (_("Because GDB is in replay mode, changing the " | |
1607 | "value of a register will make the execution " | |
1608 | "log unusable from this point onward. " | |
1609 | "Change all registers?")); | |
1610 | else | |
1611 | n = | |
1612 | query (_("Because GDB is in replay mode, changing the value " | |
1613 | "of a register will make the execution log unusable " | |
1614 | "from this point onward. Change register %s?"), | |
1615 | gdbarch_register_name (get_regcache_arch (regcache), | |
1616 | regno)); | |
1617 | ||
1618 | if (!n) | |
1619 | { | |
1620 | /* Invalidate the value of regcache that was set in function | |
1621 | "regcache_raw_write". */ | |
1622 | if (regno < 0) | |
1623 | { | |
1624 | int i; | |
1625 | ||
1626 | for (i = 0; | |
1627 | i < gdbarch_num_regs (get_regcache_arch (regcache)); | |
1628 | i++) | |
1629 | regcache_invalidate (regcache, i); | |
1630 | } | |
1631 | else | |
1632 | regcache_invalidate (regcache, regno); | |
1633 | ||
1634 | error (_("Process record canceled the operation.")); | |
1635 | } | |
1636 | ||
1637 | /* Destroy the record from here forward. */ | |
88d1aa9d | 1638 | record_full_list_release_following (record_full_list); |
d02ed0bb MM |
1639 | } |
1640 | ||
88d1aa9d | 1641 | record_full_registers_change (regcache, regno); |
d02ed0bb | 1642 | } |
88d1aa9d MM |
1643 | record_full_beneath_to_store_registers |
1644 | (record_full_beneath_to_store_registers_ops, regcache, regno); | |
d02ed0bb MM |
1645 | } |
1646 | ||
88d1aa9d MM |
1647 | /* "to_xfer_partial" method. Behavior is conditional on |
1648 | RECORD_FULL_IS_REPLAY. | |
d02ed0bb MM |
1649 | In replay mode, we cannot write memory unles we are willing to |
1650 | invalidate the record/replay log from this point forward. */ | |
1651 | ||
1652 | static LONGEST | |
88d1aa9d MM |
1653 | record_full_xfer_partial (struct target_ops *ops, enum target_object object, |
1654 | const char *annex, gdb_byte *readbuf, | |
1655 | const gdb_byte *writebuf, ULONGEST offset, | |
b55e14c7 | 1656 | ULONGEST len) |
d02ed0bb | 1657 | { |
88d1aa9d | 1658 | if (!record_full_gdb_operation_disable |
d02ed0bb MM |
1659 | && (object == TARGET_OBJECT_MEMORY |
1660 | || object == TARGET_OBJECT_RAW_MEMORY) && writebuf) | |
1661 | { | |
88d1aa9d | 1662 | if (RECORD_FULL_IS_REPLAY) |
d02ed0bb MM |
1663 | { |
1664 | /* Let user choose if he wants to write memory or not. */ | |
1665 | if (!query (_("Because GDB is in replay mode, writing to memory " | |
1666 | "will make the execution log unusable from this " | |
1667 | "point onward. Write memory at address %s?"), | |
1668 | paddress (target_gdbarch (), offset))) | |
1669 | error (_("Process record canceled the operation.")); | |
1670 | ||
1671 | /* Destroy the record from here forward. */ | |
88d1aa9d | 1672 | record_full_list_release_following (record_full_list); |
d02ed0bb MM |
1673 | } |
1674 | ||
88d1aa9d MM |
1675 | /* Check record_full_insn_num */ |
1676 | record_full_check_insn_num (0); | |
d02ed0bb MM |
1677 | |
1678 | /* Record registers change to list as an instruction. */ | |
88d1aa9d MM |
1679 | record_full_arch_list_head = NULL; |
1680 | record_full_arch_list_tail = NULL; | |
25ea693b | 1681 | if (record_full_arch_list_add_mem (offset, len)) |
d02ed0bb | 1682 | { |
88d1aa9d | 1683 | record_full_list_release (record_full_arch_list_tail); |
d02ed0bb MM |
1684 | if (record_debug) |
1685 | fprintf_unfiltered (gdb_stdlog, | |
1686 | "Process record: failed to record " | |
1687 | "execution log."); | |
1688 | return -1; | |
1689 | } | |
25ea693b | 1690 | if (record_full_arch_list_add_end ()) |
d02ed0bb | 1691 | { |
88d1aa9d | 1692 | record_full_list_release (record_full_arch_list_tail); |
d02ed0bb MM |
1693 | if (record_debug) |
1694 | fprintf_unfiltered (gdb_stdlog, | |
1695 | "Process record: failed to record " | |
1696 | "execution log."); | |
1697 | return -1; | |
1698 | } | |
88d1aa9d MM |
1699 | record_full_list->next = record_full_arch_list_head; |
1700 | record_full_arch_list_head->prev = record_full_list; | |
1701 | record_full_list = record_full_arch_list_tail; | |
d02ed0bb | 1702 | |
7ee70bf5 | 1703 | if (record_full_insn_num == record_full_insn_max_num) |
88d1aa9d | 1704 | record_full_list_release_first (); |
d02ed0bb | 1705 | else |
88d1aa9d | 1706 | record_full_insn_num++; |
d02ed0bb MM |
1707 | } |
1708 | ||
88d1aa9d MM |
1709 | return record_full_beneath_to_xfer_partial |
1710 | (record_full_beneath_to_xfer_partial_ops, object, annex, | |
1711 | readbuf, writebuf, offset, len); | |
d02ed0bb MM |
1712 | } |
1713 | ||
1714 | /* This structure represents a breakpoint inserted while the record | |
1715 | target is active. We use this to know when to install/remove | |
1716 | breakpoints in/from the target beneath. For example, a breakpoint | |
1717 | may be inserted while recording, but removed when not replaying nor | |
1718 | recording. In that case, the breakpoint had not been inserted on | |
1719 | the target beneath, so we should not try to remove it there. */ | |
1720 | ||
88d1aa9d | 1721 | struct record_full_breakpoint |
d02ed0bb MM |
1722 | { |
1723 | /* The address and address space the breakpoint was set at. */ | |
1724 | struct address_space *address_space; | |
1725 | CORE_ADDR addr; | |
1726 | ||
1727 | /* True when the breakpoint has been also installed in the target | |
1728 | beneath. This will be false for breakpoints set during replay or | |
1729 | when recording. */ | |
1730 | int in_target_beneath; | |
1731 | }; | |
1732 | ||
88d1aa9d MM |
1733 | typedef struct record_full_breakpoint *record_full_breakpoint_p; |
1734 | DEF_VEC_P(record_full_breakpoint_p); | |
d02ed0bb MM |
1735 | |
1736 | /* The list of breakpoints inserted while the record target is | |
1737 | active. */ | |
88d1aa9d | 1738 | VEC(record_full_breakpoint_p) *record_full_breakpoints = NULL; |
d02ed0bb MM |
1739 | |
1740 | static void | |
88d1aa9d | 1741 | record_full_sync_record_breakpoints (struct bp_location *loc, void *data) |
d02ed0bb MM |
1742 | { |
1743 | if (loc->loc_type != bp_loc_software_breakpoint) | |
1744 | return; | |
1745 | ||
1746 | if (loc->inserted) | |
1747 | { | |
88d1aa9d | 1748 | struct record_full_breakpoint *bp = XNEW (struct record_full_breakpoint); |
d02ed0bb MM |
1749 | |
1750 | bp->addr = loc->target_info.placed_address; | |
1751 | bp->address_space = loc->target_info.placed_address_space; | |
1752 | ||
1753 | bp->in_target_beneath = 1; | |
1754 | ||
88d1aa9d | 1755 | VEC_safe_push (record_full_breakpoint_p, record_full_breakpoints, bp); |
d02ed0bb MM |
1756 | } |
1757 | } | |
1758 | ||
88d1aa9d | 1759 | /* Sync existing breakpoints to record_full_breakpoints. */ |
d02ed0bb MM |
1760 | |
1761 | static void | |
88d1aa9d | 1762 | record_full_init_record_breakpoints (void) |
d02ed0bb | 1763 | { |
88d1aa9d | 1764 | VEC_free (record_full_breakpoint_p, record_full_breakpoints); |
d02ed0bb | 1765 | |
88d1aa9d | 1766 | iterate_over_bp_locations (record_full_sync_record_breakpoints); |
d02ed0bb MM |
1767 | } |
1768 | ||
88d1aa9d | 1769 | /* Behavior is conditional on RECORD_FULL_IS_REPLAY. We will not actually |
d02ed0bb MM |
1770 | insert or remove breakpoints in the real target when replaying, nor |
1771 | when recording. */ | |
1772 | ||
1773 | static int | |
3db08215 MM |
1774 | record_full_insert_breakpoint (struct target_ops *ops, |
1775 | struct gdbarch *gdbarch, | |
88d1aa9d | 1776 | struct bp_target_info *bp_tgt) |
d02ed0bb | 1777 | { |
88d1aa9d | 1778 | struct record_full_breakpoint *bp; |
d02ed0bb MM |
1779 | int in_target_beneath = 0; |
1780 | ||
88d1aa9d | 1781 | if (!RECORD_FULL_IS_REPLAY) |
d02ed0bb MM |
1782 | { |
1783 | /* When recording, we currently always single-step, so we don't | |
1784 | really need to install regular breakpoints in the inferior. | |
1785 | However, we do have to insert software single-step | |
1786 | breakpoints, in case the target can't hardware step. To keep | |
1787 | things single, we always insert. */ | |
1788 | struct cleanup *old_cleanups; | |
1789 | int ret; | |
1790 | ||
25ea693b | 1791 | old_cleanups = record_full_gdb_operation_disable_set (); |
3db08215 MM |
1792 | ops = record_full_beneath_to_insert_breakpoint_ops; |
1793 | ret = record_full_beneath_to_insert_breakpoint (ops, gdbarch, | |
1794 | bp_tgt); | |
d02ed0bb MM |
1795 | do_cleanups (old_cleanups); |
1796 | ||
1797 | if (ret != 0) | |
1798 | return ret; | |
1799 | ||
1800 | in_target_beneath = 1; | |
1801 | } | |
1802 | ||
88d1aa9d | 1803 | bp = XNEW (struct record_full_breakpoint); |
d02ed0bb MM |
1804 | bp->addr = bp_tgt->placed_address; |
1805 | bp->address_space = bp_tgt->placed_address_space; | |
1806 | bp->in_target_beneath = in_target_beneath; | |
88d1aa9d | 1807 | VEC_safe_push (record_full_breakpoint_p, record_full_breakpoints, bp); |
d02ed0bb MM |
1808 | return 0; |
1809 | } | |
1810 | ||
1811 | /* "to_remove_breakpoint" method for process record target. */ | |
1812 | ||
1813 | static int | |
3db08215 MM |
1814 | record_full_remove_breakpoint (struct target_ops *ops, |
1815 | struct gdbarch *gdbarch, | |
88d1aa9d | 1816 | struct bp_target_info *bp_tgt) |
d02ed0bb | 1817 | { |
88d1aa9d | 1818 | struct record_full_breakpoint *bp; |
d02ed0bb MM |
1819 | int ix; |
1820 | ||
1821 | for (ix = 0; | |
88d1aa9d MM |
1822 | VEC_iterate (record_full_breakpoint_p, |
1823 | record_full_breakpoints, ix, bp); | |
d02ed0bb MM |
1824 | ++ix) |
1825 | { | |
1826 | if (bp->addr == bp_tgt->placed_address | |
1827 | && bp->address_space == bp_tgt->placed_address_space) | |
1828 | { | |
1829 | if (bp->in_target_beneath) | |
1830 | { | |
1831 | struct cleanup *old_cleanups; | |
1832 | int ret; | |
1833 | ||
25ea693b | 1834 | old_cleanups = record_full_gdb_operation_disable_set (); |
3db08215 MM |
1835 | ops = record_full_beneath_to_remove_breakpoint_ops; |
1836 | ret = record_full_beneath_to_remove_breakpoint (ops, gdbarch, | |
1837 | bp_tgt); | |
d02ed0bb MM |
1838 | do_cleanups (old_cleanups); |
1839 | ||
1840 | if (ret != 0) | |
1841 | return ret; | |
1842 | } | |
1843 | ||
88d1aa9d MM |
1844 | VEC_unordered_remove (record_full_breakpoint_p, |
1845 | record_full_breakpoints, ix); | |
d02ed0bb MM |
1846 | return 0; |
1847 | } | |
1848 | } | |
1849 | ||
1850 | gdb_assert_not_reached ("removing unknown breakpoint"); | |
1851 | } | |
1852 | ||
1853 | /* "to_can_execute_reverse" method for process record target. */ | |
1854 | ||
1855 | static int | |
88d1aa9d | 1856 | record_full_can_execute_reverse (void) |
d02ed0bb MM |
1857 | { |
1858 | return 1; | |
1859 | } | |
1860 | ||
1861 | /* "to_get_bookmark" method for process record and prec over core. */ | |
1862 | ||
1863 | static gdb_byte * | |
88d1aa9d | 1864 | record_full_get_bookmark (char *args, int from_tty) |
d02ed0bb | 1865 | { |
0f928d68 | 1866 | char *ret = NULL; |
d02ed0bb MM |
1867 | |
1868 | /* Return stringified form of instruction count. */ | |
88d1aa9d MM |
1869 | if (record_full_list && record_full_list->type == record_full_end) |
1870 | ret = xstrdup (pulongest (record_full_list->u.end.insn_num)); | |
d02ed0bb MM |
1871 | |
1872 | if (record_debug) | |
1873 | { | |
1874 | if (ret) | |
1875 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 1876 | "record_full_get_bookmark returns %s\n", ret); |
d02ed0bb MM |
1877 | else |
1878 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 1879 | "record_full_get_bookmark returns NULL\n"); |
d02ed0bb | 1880 | } |
0f928d68 | 1881 | return (gdb_byte *) ret; |
d02ed0bb MM |
1882 | } |
1883 | ||
1884 | /* "to_goto_bookmark" method for process record and prec over core. */ | |
1885 | ||
1886 | static void | |
0f928d68 | 1887 | record_full_goto_bookmark (gdb_byte *raw_bookmark, int from_tty) |
d02ed0bb | 1888 | { |
0f928d68 PA |
1889 | char *bookmark = (char *) raw_bookmark; |
1890 | ||
d02ed0bb MM |
1891 | if (record_debug) |
1892 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 1893 | "record_full_goto_bookmark receives %s\n", bookmark); |
d02ed0bb MM |
1894 | |
1895 | if (bookmark[0] == '\'' || bookmark[0] == '\"') | |
1896 | { | |
1897 | if (bookmark[strlen (bookmark) - 1] != bookmark[0]) | |
1898 | error (_("Unbalanced quotes: %s"), bookmark); | |
1899 | ||
1900 | /* Strip trailing quote. */ | |
1901 | bookmark[strlen (bookmark) - 1] = '\0'; | |
1902 | /* Strip leading quote. */ | |
1903 | bookmark++; | |
88d1aa9d | 1904 | /* Pass along to cmd_record_full_goto. */ |
d02ed0bb MM |
1905 | } |
1906 | ||
0f928d68 | 1907 | cmd_record_goto (bookmark, from_tty); |
d02ed0bb MM |
1908 | return; |
1909 | } | |
1910 | ||
1911 | static void | |
88d1aa9d MM |
1912 | record_full_async (void (*callback) (enum inferior_event_type event_type, |
1913 | void *context), void *context) | |
d02ed0bb MM |
1914 | { |
1915 | /* If we're on top of a line target (e.g., linux-nat, remote), then | |
1916 | set it to async mode as well. Will be NULL if we're sitting on | |
1917 | top of the core target, for "record restore". */ | |
88d1aa9d MM |
1918 | if (record_full_beneath_to_async != NULL) |
1919 | record_full_beneath_to_async (callback, context); | |
d02ed0bb MM |
1920 | } |
1921 | ||
1922 | static int | |
88d1aa9d | 1923 | record_full_can_async_p (void) |
d02ed0bb MM |
1924 | { |
1925 | /* We only enable async when the user specifically asks for it. */ | |
1926 | return target_async_permitted; | |
1927 | } | |
1928 | ||
1929 | static int | |
88d1aa9d | 1930 | record_full_is_async_p (void) |
d02ed0bb MM |
1931 | { |
1932 | /* We only enable async when the user specifically asks for it. */ | |
1933 | return target_async_permitted; | |
1934 | } | |
1935 | ||
1936 | static enum exec_direction_kind | |
88d1aa9d | 1937 | record_full_execution_direction (void) |
d02ed0bb | 1938 | { |
88d1aa9d | 1939 | return record_full_execution_dir; |
d02ed0bb MM |
1940 | } |
1941 | ||
1942 | static void | |
88d1aa9d | 1943 | record_full_info (void) |
d02ed0bb | 1944 | { |
88d1aa9d | 1945 | struct record_full_entry *p; |
d02ed0bb | 1946 | |
88d1aa9d | 1947 | if (RECORD_FULL_IS_REPLAY) |
d02ed0bb MM |
1948 | printf_filtered (_("Replay mode:\n")); |
1949 | else | |
1950 | printf_filtered (_("Record mode:\n")); | |
1951 | ||
1952 | /* Find entry for first actual instruction in the log. */ | |
88d1aa9d MM |
1953 | for (p = record_full_first.next; |
1954 | p != NULL && p->type != record_full_end; | |
d02ed0bb MM |
1955 | p = p->next) |
1956 | ; | |
1957 | ||
1958 | /* Do we have a log at all? */ | |
88d1aa9d | 1959 | if (p != NULL && p->type == record_full_end) |
d02ed0bb MM |
1960 | { |
1961 | /* Display instruction number for first instruction in the log. */ | |
1962 | printf_filtered (_("Lowest recorded instruction number is %s.\n"), | |
1963 | pulongest (p->u.end.insn_num)); | |
1964 | ||
1965 | /* If in replay mode, display where we are in the log. */ | |
88d1aa9d | 1966 | if (RECORD_FULL_IS_REPLAY) |
d02ed0bb | 1967 | printf_filtered (_("Current instruction number is %s.\n"), |
88d1aa9d | 1968 | pulongest (record_full_list->u.end.insn_num)); |
d02ed0bb MM |
1969 | |
1970 | /* Display instruction number for last instruction in the log. */ | |
1971 | printf_filtered (_("Highest recorded instruction number is %s.\n"), | |
88d1aa9d | 1972 | pulongest (record_full_insn_count)); |
d02ed0bb MM |
1973 | |
1974 | /* Display log count. */ | |
7ee70bf5 | 1975 | printf_filtered (_("Log contains %u instructions.\n"), |
88d1aa9d | 1976 | record_full_insn_num); |
d02ed0bb MM |
1977 | } |
1978 | else | |
1979 | printf_filtered (_("No instructions have been logged.\n")); | |
1980 | ||
1981 | /* Display max log size. */ | |
7ee70bf5 | 1982 | printf_filtered (_("Max logged instructions is %u.\n"), |
88d1aa9d | 1983 | record_full_insn_max_num); |
d02ed0bb MM |
1984 | } |
1985 | ||
1986 | /* The "to_record_delete" target method. */ | |
1987 | ||
1988 | static void | |
88d1aa9d | 1989 | record_full_delete (void) |
d02ed0bb | 1990 | { |
88d1aa9d | 1991 | record_full_list_release_following (record_full_list); |
d02ed0bb MM |
1992 | } |
1993 | ||
1994 | /* The "to_record_is_replaying" target method. */ | |
1995 | ||
1996 | static int | |
88d1aa9d | 1997 | record_full_is_replaying (void) |
d02ed0bb | 1998 | { |
88d1aa9d | 1999 | return RECORD_FULL_IS_REPLAY; |
d02ed0bb MM |
2000 | } |
2001 | ||
2002 | /* Go to a specific entry. */ | |
2003 | ||
2004 | static void | |
88d1aa9d | 2005 | record_full_goto_entry (struct record_full_entry *p) |
d02ed0bb MM |
2006 | { |
2007 | if (p == NULL) | |
2008 | error (_("Target insn not found.")); | |
88d1aa9d | 2009 | else if (p == record_full_list) |
d02ed0bb | 2010 | error (_("Already at target insn.")); |
88d1aa9d | 2011 | else if (p->u.end.insn_num > record_full_list->u.end.insn_num) |
d02ed0bb MM |
2012 | { |
2013 | printf_filtered (_("Go forward to insn number %s\n"), | |
2014 | pulongest (p->u.end.insn_num)); | |
88d1aa9d | 2015 | record_full_goto_insn (p, EXEC_FORWARD); |
d02ed0bb MM |
2016 | } |
2017 | else | |
2018 | { | |
2019 | printf_filtered (_("Go backward to insn number %s\n"), | |
2020 | pulongest (p->u.end.insn_num)); | |
88d1aa9d | 2021 | record_full_goto_insn (p, EXEC_REVERSE); |
d02ed0bb MM |
2022 | } |
2023 | ||
2024 | registers_changed (); | |
2025 | reinit_frame_cache (); | |
08d72866 | 2026 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
d02ed0bb MM |
2027 | } |
2028 | ||
2029 | /* The "to_goto_record_begin" target method. */ | |
2030 | ||
2031 | static void | |
88d1aa9d | 2032 | record_full_goto_begin (void) |
d02ed0bb | 2033 | { |
88d1aa9d | 2034 | struct record_full_entry *p = NULL; |
d02ed0bb | 2035 | |
88d1aa9d MM |
2036 | for (p = &record_full_first; p != NULL; p = p->next) |
2037 | if (p->type == record_full_end) | |
d02ed0bb MM |
2038 | break; |
2039 | ||
88d1aa9d | 2040 | record_full_goto_entry (p); |
d02ed0bb MM |
2041 | } |
2042 | ||
2043 | /* The "to_goto_record_end" target method. */ | |
2044 | ||
2045 | static void | |
88d1aa9d | 2046 | record_full_goto_end (void) |
d02ed0bb | 2047 | { |
88d1aa9d | 2048 | struct record_full_entry *p = NULL; |
d02ed0bb | 2049 | |
88d1aa9d | 2050 | for (p = record_full_list; p->next != NULL; p = p->next) |
d02ed0bb MM |
2051 | ; |
2052 | for (; p!= NULL; p = p->prev) | |
88d1aa9d | 2053 | if (p->type == record_full_end) |
d02ed0bb MM |
2054 | break; |
2055 | ||
88d1aa9d | 2056 | record_full_goto_entry (p); |
d02ed0bb MM |
2057 | } |
2058 | ||
2059 | /* The "to_goto_record" target method. */ | |
2060 | ||
2061 | static void | |
88d1aa9d | 2062 | record_full_goto (ULONGEST target_insn) |
d02ed0bb | 2063 | { |
88d1aa9d | 2064 | struct record_full_entry *p = NULL; |
d02ed0bb | 2065 | |
88d1aa9d MM |
2066 | for (p = &record_full_first; p != NULL; p = p->next) |
2067 | if (p->type == record_full_end && p->u.end.insn_num == target_insn) | |
d02ed0bb MM |
2068 | break; |
2069 | ||
88d1aa9d | 2070 | record_full_goto_entry (p); |
d02ed0bb MM |
2071 | } |
2072 | ||
2073 | static void | |
88d1aa9d | 2074 | init_record_full_ops (void) |
d02ed0bb | 2075 | { |
88d1aa9d MM |
2076 | record_full_ops.to_shortname = "record-full"; |
2077 | record_full_ops.to_longname = "Process record and replay target"; | |
2078 | record_full_ops.to_doc = | |
d02ed0bb | 2079 | "Log program while executing and replay execution from log."; |
88d1aa9d MM |
2080 | record_full_ops.to_open = record_full_open; |
2081 | record_full_ops.to_close = record_full_close; | |
2082 | record_full_ops.to_resume = record_full_resume; | |
2083 | record_full_ops.to_wait = record_full_wait; | |
7c1687a9 MM |
2084 | record_full_ops.to_disconnect = record_disconnect; |
2085 | record_full_ops.to_detach = record_detach; | |
2086 | record_full_ops.to_mourn_inferior = record_mourn_inferior; | |
2087 | record_full_ops.to_kill = record_kill; | |
88d1aa9d MM |
2088 | record_full_ops.to_create_inferior = find_default_create_inferior; |
2089 | record_full_ops.to_store_registers = record_full_store_registers; | |
2090 | record_full_ops.to_xfer_partial = record_full_xfer_partial; | |
2091 | record_full_ops.to_insert_breakpoint = record_full_insert_breakpoint; | |
2092 | record_full_ops.to_remove_breakpoint = record_full_remove_breakpoint; | |
2093 | record_full_ops.to_stopped_by_watchpoint = record_full_stopped_by_watchpoint; | |
2094 | record_full_ops.to_stopped_data_address = record_full_stopped_data_address; | |
2095 | record_full_ops.to_can_execute_reverse = record_full_can_execute_reverse; | |
2096 | record_full_ops.to_stratum = record_stratum; | |
d02ed0bb | 2097 | /* Add bookmark target methods. */ |
88d1aa9d MM |
2098 | record_full_ops.to_get_bookmark = record_full_get_bookmark; |
2099 | record_full_ops.to_goto_bookmark = record_full_goto_bookmark; | |
2100 | record_full_ops.to_async = record_full_async; | |
2101 | record_full_ops.to_can_async_p = record_full_can_async_p; | |
2102 | record_full_ops.to_is_async_p = record_full_is_async_p; | |
2103 | record_full_ops.to_execution_direction = record_full_execution_direction; | |
2104 | record_full_ops.to_info_record = record_full_info; | |
2105 | record_full_ops.to_save_record = record_full_save; | |
2106 | record_full_ops.to_delete_record = record_full_delete; | |
2107 | record_full_ops.to_record_is_replaying = record_full_is_replaying; | |
2108 | record_full_ops.to_goto_record_begin = record_full_goto_begin; | |
2109 | record_full_ops.to_goto_record_end = record_full_goto_end; | |
2110 | record_full_ops.to_goto_record = record_full_goto; | |
2111 | record_full_ops.to_magic = OPS_MAGIC; | |
d02ed0bb MM |
2112 | } |
2113 | ||
2114 | /* "to_resume" method for prec over corefile. */ | |
2115 | ||
2116 | static void | |
88d1aa9d MM |
2117 | record_full_core_resume (struct target_ops *ops, ptid_t ptid, int step, |
2118 | enum gdb_signal signal) | |
d02ed0bb | 2119 | { |
88d1aa9d MM |
2120 | record_full_resume_step = step; |
2121 | record_full_resumed = 1; | |
2122 | record_full_execution_dir = execution_direction; | |
d02ed0bb MM |
2123 | |
2124 | /* We are about to start executing the inferior (or simulate it), | |
2125 | let's register it with the event loop. */ | |
2126 | if (target_can_async_p ()) | |
2127 | { | |
2128 | target_async (inferior_event_handler, 0); | |
2129 | ||
2130 | /* Notify the event loop there's an event to wait for. */ | |
88d1aa9d | 2131 | mark_async_event_handler (record_full_async_inferior_event_token); |
d02ed0bb MM |
2132 | } |
2133 | } | |
2134 | ||
2135 | /* "to_kill" method for prec over corefile. */ | |
2136 | ||
2137 | static void | |
88d1aa9d | 2138 | record_full_core_kill (struct target_ops *ops) |
d02ed0bb MM |
2139 | { |
2140 | if (record_debug) | |
88d1aa9d | 2141 | fprintf_unfiltered (gdb_stdlog, "Process record: record_full_core_kill\n"); |
d02ed0bb | 2142 | |
88d1aa9d | 2143 | unpush_target (&record_full_core_ops); |
d02ed0bb MM |
2144 | } |
2145 | ||
2146 | /* "to_fetch_registers" method for prec over corefile. */ | |
2147 | ||
2148 | static void | |
88d1aa9d MM |
2149 | record_full_core_fetch_registers (struct target_ops *ops, |
2150 | struct regcache *regcache, | |
2151 | int regno) | |
d02ed0bb MM |
2152 | { |
2153 | if (regno < 0) | |
2154 | { | |
2155 | int num = gdbarch_num_regs (get_regcache_arch (regcache)); | |
2156 | int i; | |
2157 | ||
2158 | for (i = 0; i < num; i ++) | |
2159 | regcache_raw_supply (regcache, i, | |
88d1aa9d | 2160 | record_full_core_regbuf + MAX_REGISTER_SIZE * i); |
d02ed0bb MM |
2161 | } |
2162 | else | |
2163 | regcache_raw_supply (regcache, regno, | |
88d1aa9d | 2164 | record_full_core_regbuf + MAX_REGISTER_SIZE * regno); |
d02ed0bb MM |
2165 | } |
2166 | ||
2167 | /* "to_prepare_to_store" method for prec over corefile. */ | |
2168 | ||
2169 | static void | |
f32dbf8c MM |
2170 | record_full_core_prepare_to_store (struct target_ops *self, |
2171 | struct regcache *regcache) | |
d02ed0bb MM |
2172 | { |
2173 | } | |
2174 | ||
2175 | /* "to_store_registers" method for prec over corefile. */ | |
2176 | ||
2177 | static void | |
88d1aa9d | 2178 | record_full_core_store_registers (struct target_ops *ops, |
d02ed0bb MM |
2179 | struct regcache *regcache, |
2180 | int regno) | |
2181 | { | |
88d1aa9d | 2182 | if (record_full_gdb_operation_disable) |
d02ed0bb | 2183 | regcache_raw_collect (regcache, regno, |
88d1aa9d | 2184 | record_full_core_regbuf + MAX_REGISTER_SIZE * regno); |
d02ed0bb MM |
2185 | else |
2186 | error (_("You can't do that without a process to debug.")); | |
2187 | } | |
2188 | ||
2189 | /* "to_xfer_partial" method for prec over corefile. */ | |
2190 | ||
2191 | static LONGEST | |
88d1aa9d MM |
2192 | record_full_core_xfer_partial (struct target_ops *ops, |
2193 | enum target_object object, | |
2194 | const char *annex, gdb_byte *readbuf, | |
2195 | const gdb_byte *writebuf, ULONGEST offset, | |
b55e14c7 | 2196 | ULONGEST len) |
d02ed0bb MM |
2197 | { |
2198 | if (object == TARGET_OBJECT_MEMORY) | |
2199 | { | |
88d1aa9d | 2200 | if (record_full_gdb_operation_disable || !writebuf) |
d02ed0bb MM |
2201 | { |
2202 | struct target_section *p; | |
2203 | ||
88d1aa9d | 2204 | for (p = record_full_core_start; p < record_full_core_end; p++) |
d02ed0bb MM |
2205 | { |
2206 | if (offset >= p->addr) | |
2207 | { | |
88d1aa9d | 2208 | struct record_full_core_buf_entry *entry; |
d02ed0bb MM |
2209 | ULONGEST sec_offset; |
2210 | ||
2211 | if (offset >= p->endaddr) | |
2212 | continue; | |
2213 | ||
2214 | if (offset + len > p->endaddr) | |
2215 | len = p->endaddr - offset; | |
2216 | ||
2217 | sec_offset = offset - p->addr; | |
2218 | ||
2219 | /* Read readbuf or write writebuf p, offset, len. */ | |
2220 | /* Check flags. */ | |
2221 | if (p->the_bfd_section->flags & SEC_CONSTRUCTOR | |
2222 | || (p->the_bfd_section->flags & SEC_HAS_CONTENTS) == 0) | |
2223 | { | |
2224 | if (readbuf) | |
2225 | memset (readbuf, 0, len); | |
2226 | return len; | |
2227 | } | |
88d1aa9d MM |
2228 | /* Get record_full_core_buf_entry. */ |
2229 | for (entry = record_full_core_buf_list; entry; | |
d02ed0bb MM |
2230 | entry = entry->prev) |
2231 | if (entry->p == p) | |
2232 | break; | |
2233 | if (writebuf) | |
2234 | { | |
2235 | if (!entry) | |
2236 | { | |
2237 | /* Add a new entry. */ | |
88d1aa9d MM |
2238 | entry = (struct record_full_core_buf_entry *) |
2239 | xmalloc | |
2240 | (sizeof (struct record_full_core_buf_entry)); | |
d02ed0bb | 2241 | entry->p = p; |
2b2848e2 DE |
2242 | if (!bfd_malloc_and_get_section |
2243 | (p->the_bfd_section->owner, | |
2244 | p->the_bfd_section, | |
2245 | &entry->buf)) | |
d02ed0bb MM |
2246 | { |
2247 | xfree (entry); | |
2248 | return 0; | |
2249 | } | |
88d1aa9d MM |
2250 | entry->prev = record_full_core_buf_list; |
2251 | record_full_core_buf_list = entry; | |
d02ed0bb MM |
2252 | } |
2253 | ||
2254 | memcpy (entry->buf + sec_offset, writebuf, | |
2255 | (size_t) len); | |
2256 | } | |
2257 | else | |
2258 | { | |
2259 | if (!entry) | |
88d1aa9d MM |
2260 | return record_full_beneath_to_xfer_partial |
2261 | (record_full_beneath_to_xfer_partial_ops, | |
d02ed0bb MM |
2262 | object, annex, readbuf, writebuf, |
2263 | offset, len); | |
2264 | ||
2265 | memcpy (readbuf, entry->buf + sec_offset, | |
2266 | (size_t) len); | |
2267 | } | |
2268 | ||
2269 | return len; | |
2270 | } | |
2271 | } | |
2272 | ||
2273 | return -1; | |
2274 | } | |
2275 | else | |
2276 | error (_("You can't do that without a process to debug.")); | |
2277 | } | |
2278 | ||
88d1aa9d MM |
2279 | return record_full_beneath_to_xfer_partial |
2280 | (record_full_beneath_to_xfer_partial_ops, object, annex, | |
2281 | readbuf, writebuf, offset, len); | |
d02ed0bb MM |
2282 | } |
2283 | ||
2284 | /* "to_insert_breakpoint" method for prec over corefile. */ | |
2285 | ||
2286 | static int | |
3db08215 MM |
2287 | record_full_core_insert_breakpoint (struct target_ops *ops, |
2288 | struct gdbarch *gdbarch, | |
88d1aa9d | 2289 | struct bp_target_info *bp_tgt) |
d02ed0bb MM |
2290 | { |
2291 | return 0; | |
2292 | } | |
2293 | ||
2294 | /* "to_remove_breakpoint" method for prec over corefile. */ | |
2295 | ||
2296 | static int | |
3db08215 MM |
2297 | record_full_core_remove_breakpoint (struct target_ops *ops, |
2298 | struct gdbarch *gdbarch, | |
88d1aa9d | 2299 | struct bp_target_info *bp_tgt) |
d02ed0bb MM |
2300 | { |
2301 | return 0; | |
2302 | } | |
2303 | ||
2304 | /* "to_has_execution" method for prec over corefile. */ | |
2305 | ||
2306 | static int | |
88d1aa9d | 2307 | record_full_core_has_execution (struct target_ops *ops, ptid_t the_ptid) |
d02ed0bb MM |
2308 | { |
2309 | return 1; | |
2310 | } | |
2311 | ||
2312 | static void | |
88d1aa9d | 2313 | init_record_full_core_ops (void) |
d02ed0bb | 2314 | { |
88d1aa9d MM |
2315 | record_full_core_ops.to_shortname = "record-core"; |
2316 | record_full_core_ops.to_longname = "Process record and replay target"; | |
2317 | record_full_core_ops.to_doc = | |
d02ed0bb | 2318 | "Log program while executing and replay execution from log."; |
88d1aa9d MM |
2319 | record_full_core_ops.to_open = record_full_open; |
2320 | record_full_core_ops.to_close = record_full_close; | |
2321 | record_full_core_ops.to_resume = record_full_core_resume; | |
2322 | record_full_core_ops.to_wait = record_full_wait; | |
2323 | record_full_core_ops.to_kill = record_full_core_kill; | |
2324 | record_full_core_ops.to_fetch_registers = record_full_core_fetch_registers; | |
2325 | record_full_core_ops.to_prepare_to_store = record_full_core_prepare_to_store; | |
2326 | record_full_core_ops.to_store_registers = record_full_core_store_registers; | |
2327 | record_full_core_ops.to_xfer_partial = record_full_core_xfer_partial; | |
2328 | record_full_core_ops.to_insert_breakpoint | |
2329 | = record_full_core_insert_breakpoint; | |
2330 | record_full_core_ops.to_remove_breakpoint | |
2331 | = record_full_core_remove_breakpoint; | |
2332 | record_full_core_ops.to_stopped_by_watchpoint | |
2333 | = record_full_stopped_by_watchpoint; | |
2334 | record_full_core_ops.to_stopped_data_address | |
2335 | = record_full_stopped_data_address; | |
2336 | record_full_core_ops.to_can_execute_reverse | |
2337 | = record_full_can_execute_reverse; | |
2338 | record_full_core_ops.to_has_execution = record_full_core_has_execution; | |
2339 | record_full_core_ops.to_stratum = record_stratum; | |
d02ed0bb | 2340 | /* Add bookmark target methods. */ |
88d1aa9d MM |
2341 | record_full_core_ops.to_get_bookmark = record_full_get_bookmark; |
2342 | record_full_core_ops.to_goto_bookmark = record_full_goto_bookmark; | |
2343 | record_full_core_ops.to_async = record_full_async; | |
2344 | record_full_core_ops.to_can_async_p = record_full_can_async_p; | |
2345 | record_full_core_ops.to_is_async_p = record_full_is_async_p; | |
2346 | record_full_core_ops.to_execution_direction | |
2347 | = record_full_execution_direction; | |
2348 | record_full_core_ops.to_info_record = record_full_info; | |
2349 | record_full_core_ops.to_delete_record = record_full_delete; | |
2350 | record_full_core_ops.to_record_is_replaying = record_full_is_replaying; | |
2351 | record_full_core_ops.to_goto_record_begin = record_full_goto_begin; | |
2352 | record_full_core_ops.to_goto_record_end = record_full_goto_end; | |
2353 | record_full_core_ops.to_goto_record = record_full_goto; | |
2354 | record_full_core_ops.to_magic = OPS_MAGIC; | |
d02ed0bb MM |
2355 | } |
2356 | ||
2357 | /* Record log save-file format | |
2358 | Version 1 (never released) | |
2359 | ||
2360 | Header: | |
2361 | 4 bytes: magic number htonl(0x20090829). | |
2362 | NOTE: be sure to change whenever this file format changes! | |
2363 | ||
2364 | Records: | |
88d1aa9d MM |
2365 | record_full_end: |
2366 | 1 byte: record type (record_full_end, see enum record_full_type). | |
2367 | record_full_reg: | |
2368 | 1 byte: record type (record_full_reg, see enum record_full_type). | |
d02ed0bb MM |
2369 | 8 bytes: register id (network byte order). |
2370 | MAX_REGISTER_SIZE bytes: register value. | |
88d1aa9d MM |
2371 | record_full_mem: |
2372 | 1 byte: record type (record_full_mem, see enum record_full_type). | |
d02ed0bb MM |
2373 | 8 bytes: memory length (network byte order). |
2374 | 8 bytes: memory address (network byte order). | |
2375 | n bytes: memory value (n == memory length). | |
2376 | ||
2377 | Version 2 | |
2378 | 4 bytes: magic number netorder32(0x20091016). | |
2379 | NOTE: be sure to change whenever this file format changes! | |
2380 | ||
2381 | Records: | |
88d1aa9d MM |
2382 | record_full_end: |
2383 | 1 byte: record type (record_full_end, see enum record_full_type). | |
d02ed0bb MM |
2384 | 4 bytes: signal |
2385 | 4 bytes: instruction count | |
88d1aa9d MM |
2386 | record_full_reg: |
2387 | 1 byte: record type (record_full_reg, see enum record_full_type). | |
d02ed0bb MM |
2388 | 4 bytes: register id (network byte order). |
2389 | n bytes: register value (n == actual register size). | |
2390 | (eg. 4 bytes for x86 general registers). | |
88d1aa9d MM |
2391 | record_full_mem: |
2392 | 1 byte: record type (record_full_mem, see enum record_full_type). | |
d02ed0bb MM |
2393 | 4 bytes: memory length (network byte order). |
2394 | 8 bytes: memory address (network byte order). | |
2395 | n bytes: memory value (n == memory length). | |
2396 | ||
2397 | */ | |
2398 | ||
2399 | /* bfdcore_read -- read bytes from a core file section. */ | |
2400 | ||
2401 | static inline void | |
2402 | bfdcore_read (bfd *obfd, asection *osec, void *buf, int len, int *offset) | |
2403 | { | |
2404 | int ret = bfd_get_section_contents (obfd, osec, buf, *offset, len); | |
2405 | ||
2406 | if (ret) | |
2407 | *offset += len; | |
2408 | else | |
2409 | error (_("Failed to read %d bytes from core file %s ('%s')."), | |
2410 | len, bfd_get_filename (obfd), | |
2411 | bfd_errmsg (bfd_get_error ())); | |
2412 | } | |
2413 | ||
2414 | static inline uint64_t | |
2415 | netorder64 (uint64_t input) | |
2416 | { | |
2417 | uint64_t ret; | |
2418 | ||
2419 | store_unsigned_integer ((gdb_byte *) &ret, sizeof (ret), | |
2420 | BFD_ENDIAN_BIG, input); | |
2421 | return ret; | |
2422 | } | |
2423 | ||
2424 | static inline uint32_t | |
2425 | netorder32 (uint32_t input) | |
2426 | { | |
2427 | uint32_t ret; | |
2428 | ||
2429 | store_unsigned_integer ((gdb_byte *) &ret, sizeof (ret), | |
2430 | BFD_ENDIAN_BIG, input); | |
2431 | return ret; | |
2432 | } | |
2433 | ||
2434 | static inline uint16_t | |
2435 | netorder16 (uint16_t input) | |
2436 | { | |
2437 | uint16_t ret; | |
2438 | ||
2439 | store_unsigned_integer ((gdb_byte *) &ret, sizeof (ret), | |
2440 | BFD_ENDIAN_BIG, input); | |
2441 | return ret; | |
2442 | } | |
2443 | ||
2444 | /* Restore the execution log from a core_bfd file. */ | |
2445 | static void | |
88d1aa9d | 2446 | record_full_restore (void) |
d02ed0bb MM |
2447 | { |
2448 | uint32_t magic; | |
2449 | struct cleanup *old_cleanups; | |
88d1aa9d | 2450 | struct record_full_entry *rec; |
d02ed0bb MM |
2451 | asection *osec; |
2452 | uint32_t osec_size; | |
2453 | int bfd_offset = 0; | |
2454 | struct regcache *regcache; | |
2455 | ||
2456 | /* We restore the execution log from the open core bfd, | |
2457 | if there is one. */ | |
2458 | if (core_bfd == NULL) | |
2459 | return; | |
2460 | ||
88d1aa9d MM |
2461 | /* "record_full_restore" can only be called when record list is empty. */ |
2462 | gdb_assert (record_full_first.next == NULL); | |
d02ed0bb MM |
2463 | |
2464 | if (record_debug) | |
2465 | fprintf_unfiltered (gdb_stdlog, "Restoring recording from core file.\n"); | |
2466 | ||
2467 | /* Now need to find our special note section. */ | |
2468 | osec = bfd_get_section_by_name (core_bfd, "null0"); | |
2469 | if (record_debug) | |
2470 | fprintf_unfiltered (gdb_stdlog, "Find precord section %s.\n", | |
2471 | osec ? "succeeded" : "failed"); | |
2472 | if (osec == NULL) | |
2473 | return; | |
2474 | osec_size = bfd_section_size (core_bfd, osec); | |
2475 | if (record_debug) | |
2476 | fprintf_unfiltered (gdb_stdlog, "%s", bfd_section_name (core_bfd, osec)); | |
2477 | ||
2478 | /* Check the magic code. */ | |
2479 | bfdcore_read (core_bfd, osec, &magic, sizeof (magic), &bfd_offset); | |
88d1aa9d | 2480 | if (magic != RECORD_FULL_FILE_MAGIC) |
d02ed0bb MM |
2481 | error (_("Version mis-match or file format error in core file %s."), |
2482 | bfd_get_filename (core_bfd)); | |
2483 | if (record_debug) | |
2484 | fprintf_unfiltered (gdb_stdlog, | |
2485 | " Reading 4-byte magic cookie " | |
88d1aa9d | 2486 | "RECORD_FULL_FILE_MAGIC (0x%s)\n", |
d02ed0bb MM |
2487 | phex_nz (netorder32 (magic), 4)); |
2488 | ||
88d1aa9d MM |
2489 | /* Restore the entries in recfd into record_full_arch_list_head and |
2490 | record_full_arch_list_tail. */ | |
2491 | record_full_arch_list_head = NULL; | |
2492 | record_full_arch_list_tail = NULL; | |
2493 | record_full_insn_num = 0; | |
2494 | old_cleanups = make_cleanup (record_full_arch_list_cleanups, 0); | |
d02ed0bb MM |
2495 | regcache = get_current_regcache (); |
2496 | ||
2497 | while (1) | |
2498 | { | |
2499 | uint8_t rectype; | |
2500 | uint32_t regnum, len, signal, count; | |
2501 | uint64_t addr; | |
2502 | ||
2503 | /* We are finished when offset reaches osec_size. */ | |
2504 | if (bfd_offset >= osec_size) | |
2505 | break; | |
2506 | bfdcore_read (core_bfd, osec, &rectype, sizeof (rectype), &bfd_offset); | |
2507 | ||
2508 | switch (rectype) | |
2509 | { | |
88d1aa9d | 2510 | case record_full_reg: /* reg */ |
d02ed0bb MM |
2511 | /* Get register number to regnum. */ |
2512 | bfdcore_read (core_bfd, osec, ®num, | |
2513 | sizeof (regnum), &bfd_offset); | |
2514 | regnum = netorder32 (regnum); | |
2515 | ||
88d1aa9d | 2516 | rec = record_full_reg_alloc (regcache, regnum); |
d02ed0bb MM |
2517 | |
2518 | /* Get val. */ | |
88d1aa9d | 2519 | bfdcore_read (core_bfd, osec, record_full_get_loc (rec), |
d02ed0bb MM |
2520 | rec->u.reg.len, &bfd_offset); |
2521 | ||
2522 | if (record_debug) | |
2523 | fprintf_unfiltered (gdb_stdlog, | |
2524 | " Reading register %d (1 " | |
2525 | "plus %lu plus %d bytes)\n", | |
2526 | rec->u.reg.num, | |
2527 | (unsigned long) sizeof (regnum), | |
2528 | rec->u.reg.len); | |
2529 | break; | |
2530 | ||
88d1aa9d | 2531 | case record_full_mem: /* mem */ |
d02ed0bb MM |
2532 | /* Get len. */ |
2533 | bfdcore_read (core_bfd, osec, &len, | |
2534 | sizeof (len), &bfd_offset); | |
2535 | len = netorder32 (len); | |
2536 | ||
2537 | /* Get addr. */ | |
2538 | bfdcore_read (core_bfd, osec, &addr, | |
2539 | sizeof (addr), &bfd_offset); | |
2540 | addr = netorder64 (addr); | |
2541 | ||
88d1aa9d | 2542 | rec = record_full_mem_alloc (addr, len); |
d02ed0bb MM |
2543 | |
2544 | /* Get val. */ | |
88d1aa9d | 2545 | bfdcore_read (core_bfd, osec, record_full_get_loc (rec), |
d02ed0bb MM |
2546 | rec->u.mem.len, &bfd_offset); |
2547 | ||
2548 | if (record_debug) | |
2549 | fprintf_unfiltered (gdb_stdlog, | |
2550 | " Reading memory %s (1 plus " | |
2551 | "%lu plus %lu plus %d bytes)\n", | |
2552 | paddress (get_current_arch (), | |
2553 | rec->u.mem.addr), | |
2554 | (unsigned long) sizeof (addr), | |
2555 | (unsigned long) sizeof (len), | |
2556 | rec->u.mem.len); | |
2557 | break; | |
2558 | ||
88d1aa9d MM |
2559 | case record_full_end: /* end */ |
2560 | rec = record_full_end_alloc (); | |
2561 | record_full_insn_num ++; | |
d02ed0bb MM |
2562 | |
2563 | /* Get signal value. */ | |
2564 | bfdcore_read (core_bfd, osec, &signal, | |
2565 | sizeof (signal), &bfd_offset); | |
2566 | signal = netorder32 (signal); | |
2567 | rec->u.end.sigval = signal; | |
2568 | ||
2569 | /* Get insn count. */ | |
2570 | bfdcore_read (core_bfd, osec, &count, | |
2571 | sizeof (count), &bfd_offset); | |
2572 | count = netorder32 (count); | |
2573 | rec->u.end.insn_num = count; | |
88d1aa9d | 2574 | record_full_insn_count = count + 1; |
d02ed0bb MM |
2575 | if (record_debug) |
2576 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 2577 | " Reading record_full_end (1 + " |
d02ed0bb MM |
2578 | "%lu + %lu bytes), offset == %s\n", |
2579 | (unsigned long) sizeof (signal), | |
2580 | (unsigned long) sizeof (count), | |
2581 | paddress (get_current_arch (), | |
2582 | bfd_offset)); | |
2583 | break; | |
2584 | ||
2585 | default: | |
2586 | error (_("Bad entry type in core file %s."), | |
2587 | bfd_get_filename (core_bfd)); | |
2588 | break; | |
2589 | } | |
2590 | ||
2591 | /* Add rec to record arch list. */ | |
88d1aa9d | 2592 | record_full_arch_list_add (rec); |
d02ed0bb MM |
2593 | } |
2594 | ||
2595 | discard_cleanups (old_cleanups); | |
2596 | ||
88d1aa9d MM |
2597 | /* Add record_full_arch_list_head to the end of record list. */ |
2598 | record_full_first.next = record_full_arch_list_head; | |
2599 | record_full_arch_list_head->prev = &record_full_first; | |
2600 | record_full_arch_list_tail->next = NULL; | |
2601 | record_full_list = &record_full_first; | |
d02ed0bb | 2602 | |
88d1aa9d MM |
2603 | /* Update record_full_insn_max_num. */ |
2604 | if (record_full_insn_num > record_full_insn_max_num) | |
d02ed0bb | 2605 | { |
88d1aa9d | 2606 | record_full_insn_max_num = record_full_insn_num; |
7ee70bf5 | 2607 | warning (_("Auto increase record/replay buffer limit to %u."), |
88d1aa9d | 2608 | record_full_insn_max_num); |
d02ed0bb MM |
2609 | } |
2610 | ||
2611 | /* Succeeded. */ | |
2612 | printf_filtered (_("Restored records from core file %s.\n"), | |
2613 | bfd_get_filename (core_bfd)); | |
2614 | ||
08d72866 | 2615 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1); |
d02ed0bb MM |
2616 | } |
2617 | ||
2618 | /* bfdcore_write -- write bytes into a core file section. */ | |
2619 | ||
2620 | static inline void | |
2621 | bfdcore_write (bfd *obfd, asection *osec, void *buf, int len, int *offset) | |
2622 | { | |
2623 | int ret = bfd_set_section_contents (obfd, osec, buf, *offset, len); | |
2624 | ||
2625 | if (ret) | |
2626 | *offset += len; | |
2627 | else | |
2628 | error (_("Failed to write %d bytes to core file %s ('%s')."), | |
2629 | len, bfd_get_filename (obfd), | |
2630 | bfd_errmsg (bfd_get_error ())); | |
2631 | } | |
2632 | ||
2633 | /* Restore the execution log from a file. We use a modified elf | |
2634 | corefile format, with an extra section for our data. */ | |
2635 | ||
2636 | static void | |
88d1aa9d | 2637 | cmd_record_full_restore (char *args, int from_tty) |
d02ed0bb MM |
2638 | { |
2639 | core_file_command (args, from_tty); | |
88d1aa9d | 2640 | record_full_open (args, from_tty); |
d02ed0bb MM |
2641 | } |
2642 | ||
2643 | static void | |
88d1aa9d | 2644 | record_full_save_cleanups (void *data) |
d02ed0bb MM |
2645 | { |
2646 | bfd *obfd = data; | |
2647 | char *pathname = xstrdup (bfd_get_filename (obfd)); | |
2648 | ||
2649 | gdb_bfd_unref (obfd); | |
2650 | unlink (pathname); | |
2651 | xfree (pathname); | |
2652 | } | |
2653 | ||
2654 | /* Save the execution log to a file. We use a modified elf corefile | |
2655 | format, with an extra section for our data. */ | |
2656 | ||
2657 | static void | |
85e1311a | 2658 | record_full_save (const char *recfilename) |
d02ed0bb | 2659 | { |
88d1aa9d | 2660 | struct record_full_entry *cur_record_full_list; |
d02ed0bb MM |
2661 | uint32_t magic; |
2662 | struct regcache *regcache; | |
2663 | struct gdbarch *gdbarch; | |
2664 | struct cleanup *old_cleanups; | |
2665 | struct cleanup *set_cleanups; | |
2666 | bfd *obfd; | |
2667 | int save_size = 0; | |
2668 | asection *osec = NULL; | |
2669 | int bfd_offset = 0; | |
2670 | ||
2671 | /* Open the save file. */ | |
2672 | if (record_debug) | |
2673 | fprintf_unfiltered (gdb_stdlog, "Saving execution log to core file '%s'\n", | |
2674 | recfilename); | |
2675 | ||
2676 | /* Open the output file. */ | |
2677 | obfd = create_gcore_bfd (recfilename); | |
88d1aa9d | 2678 | old_cleanups = make_cleanup (record_full_save_cleanups, obfd); |
d02ed0bb | 2679 | |
88d1aa9d MM |
2680 | /* Save the current record entry to "cur_record_full_list". */ |
2681 | cur_record_full_list = record_full_list; | |
d02ed0bb MM |
2682 | |
2683 | /* Get the values of regcache and gdbarch. */ | |
2684 | regcache = get_current_regcache (); | |
2685 | gdbarch = get_regcache_arch (regcache); | |
2686 | ||
2687 | /* Disable the GDB operation record. */ | |
25ea693b | 2688 | set_cleanups = record_full_gdb_operation_disable_set (); |
d02ed0bb MM |
2689 | |
2690 | /* Reverse execute to the begin of record list. */ | |
2691 | while (1) | |
2692 | { | |
2693 | /* Check for beginning and end of log. */ | |
88d1aa9d | 2694 | if (record_full_list == &record_full_first) |
d02ed0bb MM |
2695 | break; |
2696 | ||
88d1aa9d | 2697 | record_full_exec_insn (regcache, gdbarch, record_full_list); |
d02ed0bb | 2698 | |
88d1aa9d MM |
2699 | if (record_full_list->prev) |
2700 | record_full_list = record_full_list->prev; | |
d02ed0bb MM |
2701 | } |
2702 | ||
2703 | /* Compute the size needed for the extra bfd section. */ | |
2704 | save_size = 4; /* magic cookie */ | |
88d1aa9d MM |
2705 | for (record_full_list = record_full_first.next; record_full_list; |
2706 | record_full_list = record_full_list->next) | |
2707 | switch (record_full_list->type) | |
d02ed0bb | 2708 | { |
88d1aa9d | 2709 | case record_full_end: |
d02ed0bb MM |
2710 | save_size += 1 + 4 + 4; |
2711 | break; | |
88d1aa9d MM |
2712 | case record_full_reg: |
2713 | save_size += 1 + 4 + record_full_list->u.reg.len; | |
d02ed0bb | 2714 | break; |
88d1aa9d MM |
2715 | case record_full_mem: |
2716 | save_size += 1 + 4 + 8 + record_full_list->u.mem.len; | |
d02ed0bb MM |
2717 | break; |
2718 | } | |
2719 | ||
2720 | /* Make the new bfd section. */ | |
2721 | osec = bfd_make_section_anyway_with_flags (obfd, "precord", | |
2722 | SEC_HAS_CONTENTS | |
2723 | | SEC_READONLY); | |
2724 | if (osec == NULL) | |
2725 | error (_("Failed to create 'precord' section for corefile %s: %s"), | |
2726 | recfilename, | |
2727 | bfd_errmsg (bfd_get_error ())); | |
2728 | bfd_set_section_size (obfd, osec, save_size); | |
2729 | bfd_set_section_vma (obfd, osec, 0); | |
2730 | bfd_set_section_alignment (obfd, osec, 0); | |
2731 | bfd_section_lma (obfd, osec) = 0; | |
2732 | ||
2733 | /* Save corefile state. */ | |
2734 | write_gcore_file (obfd); | |
2735 | ||
2736 | /* Write out the record log. */ | |
2737 | /* Write the magic code. */ | |
88d1aa9d | 2738 | magic = RECORD_FULL_FILE_MAGIC; |
d02ed0bb MM |
2739 | if (record_debug) |
2740 | fprintf_unfiltered (gdb_stdlog, | |
2741 | " Writing 4-byte magic cookie " | |
88d1aa9d | 2742 | "RECORD_FULL_FILE_MAGIC (0x%s)\n", |
d02ed0bb MM |
2743 | phex_nz (magic, 4)); |
2744 | bfdcore_write (obfd, osec, &magic, sizeof (magic), &bfd_offset); | |
2745 | ||
2746 | /* Save the entries to recfd and forward execute to the end of | |
2747 | record list. */ | |
88d1aa9d | 2748 | record_full_list = &record_full_first; |
d02ed0bb MM |
2749 | while (1) |
2750 | { | |
2751 | /* Save entry. */ | |
88d1aa9d | 2752 | if (record_full_list != &record_full_first) |
d02ed0bb MM |
2753 | { |
2754 | uint8_t type; | |
2755 | uint32_t regnum, len, signal, count; | |
2756 | uint64_t addr; | |
2757 | ||
88d1aa9d | 2758 | type = record_full_list->type; |
d02ed0bb MM |
2759 | bfdcore_write (obfd, osec, &type, sizeof (type), &bfd_offset); |
2760 | ||
88d1aa9d | 2761 | switch (record_full_list->type) |
d02ed0bb | 2762 | { |
88d1aa9d | 2763 | case record_full_reg: /* reg */ |
d02ed0bb MM |
2764 | if (record_debug) |
2765 | fprintf_unfiltered (gdb_stdlog, | |
2766 | " Writing register %d (1 " | |
2767 | "plus %lu plus %d bytes)\n", | |
88d1aa9d | 2768 | record_full_list->u.reg.num, |
d02ed0bb | 2769 | (unsigned long) sizeof (regnum), |
88d1aa9d | 2770 | record_full_list->u.reg.len); |
d02ed0bb MM |
2771 | |
2772 | /* Write regnum. */ | |
88d1aa9d | 2773 | regnum = netorder32 (record_full_list->u.reg.num); |
d02ed0bb MM |
2774 | bfdcore_write (obfd, osec, ®num, |
2775 | sizeof (regnum), &bfd_offset); | |
2776 | ||
2777 | /* Write regval. */ | |
88d1aa9d MM |
2778 | bfdcore_write (obfd, osec, |
2779 | record_full_get_loc (record_full_list), | |
2780 | record_full_list->u.reg.len, &bfd_offset); | |
d02ed0bb MM |
2781 | break; |
2782 | ||
88d1aa9d | 2783 | case record_full_mem: /* mem */ |
d02ed0bb MM |
2784 | if (record_debug) |
2785 | fprintf_unfiltered (gdb_stdlog, | |
2786 | " Writing memory %s (1 plus " | |
2787 | "%lu plus %lu plus %d bytes)\n", | |
2788 | paddress (gdbarch, | |
88d1aa9d | 2789 | record_full_list->u.mem.addr), |
d02ed0bb MM |
2790 | (unsigned long) sizeof (addr), |
2791 | (unsigned long) sizeof (len), | |
88d1aa9d | 2792 | record_full_list->u.mem.len); |
d02ed0bb MM |
2793 | |
2794 | /* Write memlen. */ | |
88d1aa9d | 2795 | len = netorder32 (record_full_list->u.mem.len); |
d02ed0bb MM |
2796 | bfdcore_write (obfd, osec, &len, sizeof (len), &bfd_offset); |
2797 | ||
2798 | /* Write memaddr. */ | |
88d1aa9d | 2799 | addr = netorder64 (record_full_list->u.mem.addr); |
d02ed0bb MM |
2800 | bfdcore_write (obfd, osec, &addr, |
2801 | sizeof (addr), &bfd_offset); | |
2802 | ||
2803 | /* Write memval. */ | |
88d1aa9d MM |
2804 | bfdcore_write (obfd, osec, |
2805 | record_full_get_loc (record_full_list), | |
2806 | record_full_list->u.mem.len, &bfd_offset); | |
d02ed0bb MM |
2807 | break; |
2808 | ||
88d1aa9d | 2809 | case record_full_end: |
d02ed0bb MM |
2810 | if (record_debug) |
2811 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 2812 | " Writing record_full_end (1 + " |
d02ed0bb MM |
2813 | "%lu + %lu bytes)\n", |
2814 | (unsigned long) sizeof (signal), | |
2815 | (unsigned long) sizeof (count)); | |
2816 | /* Write signal value. */ | |
88d1aa9d | 2817 | signal = netorder32 (record_full_list->u.end.sigval); |
d02ed0bb MM |
2818 | bfdcore_write (obfd, osec, &signal, |
2819 | sizeof (signal), &bfd_offset); | |
2820 | ||
2821 | /* Write insn count. */ | |
88d1aa9d | 2822 | count = netorder32 (record_full_list->u.end.insn_num); |
d02ed0bb MM |
2823 | bfdcore_write (obfd, osec, &count, |
2824 | sizeof (count), &bfd_offset); | |
2825 | break; | |
2826 | } | |
2827 | } | |
2828 | ||
2829 | /* Execute entry. */ | |
88d1aa9d | 2830 | record_full_exec_insn (regcache, gdbarch, record_full_list); |
d02ed0bb | 2831 | |
88d1aa9d MM |
2832 | if (record_full_list->next) |
2833 | record_full_list = record_full_list->next; | |
d02ed0bb MM |
2834 | else |
2835 | break; | |
2836 | } | |
2837 | ||
88d1aa9d | 2838 | /* Reverse execute to cur_record_full_list. */ |
d02ed0bb MM |
2839 | while (1) |
2840 | { | |
2841 | /* Check for beginning and end of log. */ | |
88d1aa9d | 2842 | if (record_full_list == cur_record_full_list) |
d02ed0bb MM |
2843 | break; |
2844 | ||
88d1aa9d | 2845 | record_full_exec_insn (regcache, gdbarch, record_full_list); |
d02ed0bb | 2846 | |
88d1aa9d MM |
2847 | if (record_full_list->prev) |
2848 | record_full_list = record_full_list->prev; | |
d02ed0bb MM |
2849 | } |
2850 | ||
2851 | do_cleanups (set_cleanups); | |
2852 | gdb_bfd_unref (obfd); | |
2853 | discard_cleanups (old_cleanups); | |
2854 | ||
2855 | /* Succeeded. */ | |
2856 | printf_filtered (_("Saved core file %s with execution log.\n"), | |
2857 | recfilename); | |
2858 | } | |
2859 | ||
88d1aa9d | 2860 | /* record_full_goto_insn -- rewind the record log (forward or backward, |
d02ed0bb MM |
2861 | depending on DIR) to the given entry, changing the program state |
2862 | correspondingly. */ | |
2863 | ||
2864 | static void | |
88d1aa9d MM |
2865 | record_full_goto_insn (struct record_full_entry *entry, |
2866 | enum exec_direction_kind dir) | |
d02ed0bb | 2867 | { |
25ea693b | 2868 | struct cleanup *set_cleanups = record_full_gdb_operation_disable_set (); |
d02ed0bb MM |
2869 | struct regcache *regcache = get_current_regcache (); |
2870 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
2871 | ||
2872 | /* Assume everything is valid: we will hit the entry, | |
2873 | and we will not hit the end of the recording. */ | |
2874 | ||
2875 | if (dir == EXEC_FORWARD) | |
88d1aa9d | 2876 | record_full_list = record_full_list->next; |
d02ed0bb MM |
2877 | |
2878 | do | |
2879 | { | |
88d1aa9d | 2880 | record_full_exec_insn (regcache, gdbarch, record_full_list); |
d02ed0bb | 2881 | if (dir == EXEC_REVERSE) |
88d1aa9d | 2882 | record_full_list = record_full_list->prev; |
d02ed0bb | 2883 | else |
88d1aa9d MM |
2884 | record_full_list = record_full_list->next; |
2885 | } while (record_full_list != entry); | |
d02ed0bb MM |
2886 | do_cleanups (set_cleanups); |
2887 | } | |
2888 | ||
2889 | /* Alias for "target record-full". */ | |
2890 | ||
2891 | static void | |
88d1aa9d | 2892 | cmd_record_full_start (char *args, int from_tty) |
d02ed0bb MM |
2893 | { |
2894 | execute_command ("target record-full", from_tty); | |
2895 | } | |
2896 | ||
2897 | static void | |
88d1aa9d MM |
2898 | set_record_full_insn_max_num (char *args, int from_tty, |
2899 | struct cmd_list_element *c) | |
d02ed0bb | 2900 | { |
7ee70bf5 | 2901 | if (record_full_insn_num > record_full_insn_max_num) |
d02ed0bb | 2902 | { |
88d1aa9d MM |
2903 | /* Count down record_full_insn_num while releasing records from list. */ |
2904 | while (record_full_insn_num > record_full_insn_max_num) | |
d02ed0bb | 2905 | { |
88d1aa9d MM |
2906 | record_full_list_release_first (); |
2907 | record_full_insn_num--; | |
d02ed0bb MM |
2908 | } |
2909 | } | |
2910 | } | |
2911 | ||
2912 | /* The "set record full" command. */ | |
2913 | ||
2914 | static void | |
2915 | set_record_full_command (char *args, int from_tty) | |
2916 | { | |
2917 | printf_unfiltered (_("\"set record full\" must be followed " | |
2918 | "by an apporpriate subcommand.\n")); | |
2919 | help_list (set_record_full_cmdlist, "set record full ", all_commands, | |
2920 | gdb_stdout); | |
2921 | } | |
2922 | ||
2923 | /* The "show record full" command. */ | |
2924 | ||
2925 | static void | |
2926 | show_record_full_command (char *args, int from_tty) | |
2927 | { | |
2928 | cmd_show_list (show_record_full_cmdlist, from_tty, ""); | |
2929 | } | |
2930 | ||
2931 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
2932 | extern initialize_file_ftype _initialize_record_full; | |
2933 | ||
2934 | void | |
2935 | _initialize_record_full (void) | |
2936 | { | |
2937 | struct cmd_list_element *c; | |
2938 | ||
88d1aa9d MM |
2939 | /* Init record_full_first. */ |
2940 | record_full_first.prev = NULL; | |
2941 | record_full_first.next = NULL; | |
2942 | record_full_first.type = record_full_end; | |
d02ed0bb | 2943 | |
88d1aa9d MM |
2944 | init_record_full_ops (); |
2945 | add_target (&record_full_ops); | |
2946 | add_deprecated_target_alias (&record_full_ops, "record"); | |
2947 | init_record_full_core_ops (); | |
2948 | add_target (&record_full_core_ops); | |
d02ed0bb | 2949 | |
88d1aa9d | 2950 | add_prefix_cmd ("full", class_obscure, cmd_record_full_start, |
d02ed0bb MM |
2951 | _("Start full execution recording."), &record_full_cmdlist, |
2952 | "record full ", 0, &record_cmdlist); | |
2953 | ||
88d1aa9d | 2954 | c = add_cmd ("restore", class_obscure, cmd_record_full_restore, |
d02ed0bb MM |
2955 | _("Restore the execution log from a file.\n\ |
2956 | Argument is filename. File must be created with 'record save'."), | |
2957 | &record_full_cmdlist); | |
2958 | set_cmd_completer (c, filename_completer); | |
2959 | ||
2960 | /* Deprecate the old version without "full" prefix. */ | |
2961 | c = add_alias_cmd ("restore", "full restore", class_obscure, 1, | |
2962 | &record_cmdlist); | |
2963 | set_cmd_completer (c, filename_completer); | |
2964 | deprecate_cmd (c, "record full restore"); | |
2965 | ||
2966 | add_prefix_cmd ("full", class_support, set_record_full_command, | |
2967 | _("Set record options"), &set_record_full_cmdlist, | |
2968 | "set record full ", 0, &set_record_cmdlist); | |
2969 | ||
2970 | add_prefix_cmd ("full", class_support, show_record_full_command, | |
2971 | _("Show record options"), &show_record_full_cmdlist, | |
2972 | "show record full ", 0, &show_record_cmdlist); | |
2973 | ||
2974 | /* Record instructions number limit command. */ | |
2975 | add_setshow_boolean_cmd ("stop-at-limit", no_class, | |
88d1aa9d | 2976 | &record_full_stop_at_limit, _("\ |
d02ed0bb MM |
2977 | Set whether record/replay stops when record/replay buffer becomes full."), _("\ |
2978 | Show whether record/replay stops when record/replay buffer becomes full."), | |
2979 | _("Default is ON.\n\ | |
2980 | When ON, if the record/replay buffer becomes full, ask user what to do.\n\ | |
2981 | When OFF, if the record/replay buffer becomes full,\n\ | |
2982 | delete the oldest recorded instruction to make room for each new one."), | |
2983 | NULL, NULL, | |
2984 | &set_record_full_cmdlist, &show_record_full_cmdlist); | |
2985 | ||
2986 | c = add_alias_cmd ("stop-at-limit", "full stop-at-limit", no_class, 1, | |
2987 | &set_record_cmdlist); | |
2988 | deprecate_cmd (c, "set record full stop-at-limit"); | |
2989 | ||
2990 | c = add_alias_cmd ("stop-at-limit", "full stop-at-limit", no_class, 1, | |
2991 | &show_record_cmdlist); | |
2992 | deprecate_cmd (c, "show record full stop-at-limit"); | |
2993 | ||
88d1aa9d MM |
2994 | add_setshow_uinteger_cmd ("insn-number-max", no_class, |
2995 | &record_full_insn_max_num, | |
d02ed0bb MM |
2996 | _("Set record/replay buffer limit."), |
2997 | _("Show record/replay buffer limit."), _("\ | |
2998 | Set the maximum number of instructions to be stored in the\n\ | |
f81d1120 PA |
2999 | record/replay buffer. A value of either \"unlimited\" or zero means no\n\ |
3000 | limit. Default is 200000."), | |
88d1aa9d | 3001 | set_record_full_insn_max_num, |
d02ed0bb MM |
3002 | NULL, &set_record_full_cmdlist, |
3003 | &show_record_full_cmdlist); | |
3004 | ||
3005 | c = add_alias_cmd ("insn-number-max", "full insn-number-max", no_class, 1, | |
3006 | &set_record_cmdlist); | |
3007 | deprecate_cmd (c, "set record full insn-number-max"); | |
3008 | ||
3009 | c = add_alias_cmd ("insn-number-max", "full insn-number-max", no_class, 1, | |
3010 | &show_record_cmdlist); | |
3011 | deprecate_cmd (c, "show record full insn-number-max"); | |
3012 | ||
88d1aa9d | 3013 | add_setshow_boolean_cmd ("memory-query", no_class, |
25ea693b | 3014 | &record_full_memory_query, _("\ |
d02ed0bb MM |
3015 | Set whether query if PREC cannot record memory change of next instruction."), |
3016 | _("\ | |
3017 | Show whether query if PREC cannot record memory change of next instruction."), | |
3018 | _("\ | |
3019 | Default is OFF.\n\ | |
3020 | When ON, query if PREC cannot record memory change of next instruction."), | |
3021 | NULL, NULL, | |
88d1aa9d MM |
3022 | &set_record_full_cmdlist, |
3023 | &show_record_full_cmdlist); | |
d02ed0bb MM |
3024 | |
3025 | c = add_alias_cmd ("memory-query", "full memory-query", no_class, 1, | |
3026 | &set_record_cmdlist); | |
3027 | deprecate_cmd (c, "set record full memory-query"); | |
3028 | ||
3029 | c = add_alias_cmd ("memory-query", "full memory-query", no_class, 1, | |
3030 | &show_record_cmdlist); | |
3031 | deprecate_cmd (c, "show record full memory-query"); | |
3032 | } |