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d02ed0bb MM |
1 | /* Process record and replay target for GDB, the GNU debugger. |
2 | ||
3 | Copyright (C) 2013 Free Software Foundation, Inc. | |
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. */ |
88d1aa9d | 202 | static 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 MM |
210 | |
211 | /* Command lists for "set/show record full". */ | |
212 | static struct cmd_list_element *set_record_full_cmdlist; | |
213 | static struct cmd_list_element *show_record_full_cmdlist; | |
214 | ||
215 | /* Command list for "record full". */ | |
216 | static struct cmd_list_element *record_full_cmdlist; | |
217 | ||
218 | /* The beneath function pointers. */ | |
88d1aa9d MM |
219 | static struct target_ops *record_full_beneath_to_resume_ops; |
220 | static void (*record_full_beneath_to_resume) (struct target_ops *, ptid_t, int, | |
221 | enum gdb_signal); | |
222 | static struct target_ops *record_full_beneath_to_wait_ops; | |
223 | static ptid_t (*record_full_beneath_to_wait) (struct target_ops *, ptid_t, | |
224 | struct target_waitstatus *, | |
225 | int); | |
226 | static struct target_ops *record_full_beneath_to_store_registers_ops; | |
227 | static void (*record_full_beneath_to_store_registers) (struct target_ops *, | |
228 | struct regcache *, | |
229 | int regno); | |
230 | static struct target_ops *record_full_beneath_to_xfer_partial_ops; | |
231 | static LONGEST | |
232 | (*record_full_beneath_to_xfer_partial) (struct target_ops *ops, | |
233 | enum target_object object, | |
234 | const char *annex, | |
235 | gdb_byte *readbuf, | |
236 | const gdb_byte *writebuf, | |
237 | ULONGEST offset, | |
238 | LONGEST len); | |
239 | static int | |
240 | (*record_full_beneath_to_insert_breakpoint) (struct gdbarch *, | |
241 | struct bp_target_info *); | |
242 | static int | |
243 | (*record_full_beneath_to_remove_breakpoint) (struct gdbarch *, | |
244 | struct bp_target_info *); | |
245 | static int (*record_full_beneath_to_stopped_by_watchpoint) (void); | |
246 | static int (*record_full_beneath_to_stopped_data_address) (struct target_ops *, | |
247 | CORE_ADDR *); | |
248 | static void | |
249 | (*record_full_beneath_to_async) (void (*) (enum inferior_event_type, void *), | |
250 | void *); | |
251 | ||
252 | static void record_full_goto_insn (struct record_full_entry *entry, | |
253 | enum exec_direction_kind dir); | |
254 | static void record_full_save (char *recfilename); | |
255 | ||
256 | /* Alloc and free functions for record_full_reg, record_full_mem, and | |
257 | record_full_end entries. */ | |
258 | ||
259 | /* Alloc a record_full_reg record entry. */ | |
260 | ||
261 | static inline struct record_full_entry * | |
262 | record_full_reg_alloc (struct regcache *regcache, int regnum) | |
263 | { | |
264 | struct record_full_entry *rec; | |
d02ed0bb MM |
265 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
266 | ||
88d1aa9d MM |
267 | rec = xcalloc (1, sizeof (struct record_full_entry)); |
268 | rec->type = record_full_reg; | |
d02ed0bb MM |
269 | rec->u.reg.num = regnum; |
270 | rec->u.reg.len = register_size (gdbarch, regnum); | |
271 | if (rec->u.reg.len > sizeof (rec->u.reg.u.buf)) | |
272 | rec->u.reg.u.ptr = (gdb_byte *) xmalloc (rec->u.reg.len); | |
273 | ||
274 | return rec; | |
275 | } | |
276 | ||
88d1aa9d | 277 | /* Free a record_full_reg record entry. */ |
d02ed0bb MM |
278 | |
279 | static inline void | |
88d1aa9d | 280 | record_full_reg_release (struct record_full_entry *rec) |
d02ed0bb | 281 | { |
88d1aa9d | 282 | gdb_assert (rec->type == record_full_reg); |
d02ed0bb MM |
283 | if (rec->u.reg.len > sizeof (rec->u.reg.u.buf)) |
284 | xfree (rec->u.reg.u.ptr); | |
285 | xfree (rec); | |
286 | } | |
287 | ||
88d1aa9d | 288 | /* Alloc a record_full_mem record entry. */ |
d02ed0bb | 289 | |
88d1aa9d MM |
290 | static inline struct record_full_entry * |
291 | record_full_mem_alloc (CORE_ADDR addr, int len) | |
d02ed0bb | 292 | { |
88d1aa9d | 293 | struct record_full_entry *rec; |
d02ed0bb | 294 | |
88d1aa9d MM |
295 | rec = xcalloc (1, sizeof (struct record_full_entry)); |
296 | rec->type = record_full_mem; | |
d02ed0bb MM |
297 | rec->u.mem.addr = addr; |
298 | rec->u.mem.len = len; | |
299 | if (rec->u.mem.len > sizeof (rec->u.mem.u.buf)) | |
300 | rec->u.mem.u.ptr = (gdb_byte *) xmalloc (len); | |
301 | ||
302 | return rec; | |
303 | } | |
304 | ||
88d1aa9d | 305 | /* Free a record_full_mem record entry. */ |
d02ed0bb MM |
306 | |
307 | static inline void | |
88d1aa9d | 308 | record_full_mem_release (struct record_full_entry *rec) |
d02ed0bb | 309 | { |
88d1aa9d | 310 | gdb_assert (rec->type == record_full_mem); |
d02ed0bb MM |
311 | if (rec->u.mem.len > sizeof (rec->u.mem.u.buf)) |
312 | xfree (rec->u.mem.u.ptr); | |
313 | xfree (rec); | |
314 | } | |
315 | ||
88d1aa9d | 316 | /* Alloc a record_full_end record entry. */ |
d02ed0bb | 317 | |
88d1aa9d MM |
318 | static inline struct record_full_entry * |
319 | record_full_end_alloc (void) | |
d02ed0bb | 320 | { |
88d1aa9d | 321 | struct record_full_entry *rec; |
d02ed0bb | 322 | |
88d1aa9d MM |
323 | rec = xcalloc (1, sizeof (struct record_full_entry)); |
324 | rec->type = record_full_end; | |
d02ed0bb MM |
325 | |
326 | return rec; | |
327 | } | |
328 | ||
88d1aa9d | 329 | /* Free a record_full_end record entry. */ |
d02ed0bb MM |
330 | |
331 | static inline void | |
88d1aa9d | 332 | record_full_end_release (struct record_full_entry *rec) |
d02ed0bb MM |
333 | { |
334 | xfree (rec); | |
335 | } | |
336 | ||
337 | /* Free one record entry, any type. | |
338 | Return entry->type, in case caller wants to know. */ | |
339 | ||
88d1aa9d MM |
340 | static inline enum record_full_type |
341 | record_full_entry_release (struct record_full_entry *rec) | |
d02ed0bb | 342 | { |
88d1aa9d | 343 | enum record_full_type type = rec->type; |
d02ed0bb MM |
344 | |
345 | switch (type) { | |
88d1aa9d MM |
346 | case record_full_reg: |
347 | record_full_reg_release (rec); | |
d02ed0bb | 348 | break; |
88d1aa9d MM |
349 | case record_full_mem: |
350 | record_full_mem_release (rec); | |
d02ed0bb | 351 | break; |
88d1aa9d MM |
352 | case record_full_end: |
353 | record_full_end_release (rec); | |
d02ed0bb MM |
354 | break; |
355 | } | |
356 | return type; | |
357 | } | |
358 | ||
359 | /* Free all record entries in list pointed to by REC. */ | |
360 | ||
361 | static void | |
88d1aa9d | 362 | record_full_list_release (struct record_full_entry *rec) |
d02ed0bb MM |
363 | { |
364 | if (!rec) | |
365 | return; | |
366 | ||
367 | while (rec->next) | |
368 | rec = rec->next; | |
369 | ||
370 | while (rec->prev) | |
371 | { | |
372 | rec = rec->prev; | |
88d1aa9d | 373 | record_full_entry_release (rec->next); |
d02ed0bb MM |
374 | } |
375 | ||
88d1aa9d | 376 | if (rec == &record_full_first) |
d02ed0bb | 377 | { |
88d1aa9d MM |
378 | record_full_insn_num = 0; |
379 | record_full_first.next = NULL; | |
d02ed0bb MM |
380 | } |
381 | else | |
88d1aa9d | 382 | record_full_entry_release (rec); |
d02ed0bb MM |
383 | } |
384 | ||
385 | /* Free all record entries forward of the given list position. */ | |
386 | ||
387 | static void | |
88d1aa9d | 388 | record_full_list_release_following (struct record_full_entry *rec) |
d02ed0bb | 389 | { |
88d1aa9d | 390 | struct record_full_entry *tmp = rec->next; |
d02ed0bb MM |
391 | |
392 | rec->next = NULL; | |
393 | while (tmp) | |
394 | { | |
395 | rec = tmp->next; | |
88d1aa9d | 396 | if (record_full_entry_release (tmp) == record_full_end) |
d02ed0bb | 397 | { |
88d1aa9d MM |
398 | record_full_insn_num--; |
399 | record_full_insn_count--; | |
d02ed0bb MM |
400 | } |
401 | tmp = rec; | |
402 | } | |
403 | } | |
404 | ||
405 | /* Delete the first instruction from the beginning of the log, to make | |
406 | room for adding a new instruction at the end of the log. | |
407 | ||
88d1aa9d | 408 | Note -- this function does not modify record_full_insn_num. */ |
d02ed0bb MM |
409 | |
410 | static void | |
88d1aa9d | 411 | record_full_list_release_first (void) |
d02ed0bb | 412 | { |
88d1aa9d | 413 | struct record_full_entry *tmp; |
d02ed0bb | 414 | |
88d1aa9d | 415 | if (!record_full_first.next) |
d02ed0bb MM |
416 | return; |
417 | ||
88d1aa9d | 418 | /* Loop until a record_full_end. */ |
d02ed0bb MM |
419 | while (1) |
420 | { | |
88d1aa9d MM |
421 | /* Cut record_full_first.next out of the linked list. */ |
422 | tmp = record_full_first.next; | |
423 | record_full_first.next = tmp->next; | |
424 | tmp->next->prev = &record_full_first; | |
d02ed0bb MM |
425 | |
426 | /* tmp is now isolated, and can be deleted. */ | |
88d1aa9d MM |
427 | if (record_full_entry_release (tmp) == record_full_end) |
428 | break; /* End loop at first record_full_end. */ | |
d02ed0bb | 429 | |
88d1aa9d | 430 | if (!record_full_first.next) |
d02ed0bb | 431 | { |
88d1aa9d | 432 | gdb_assert (record_full_insn_num == 1); |
d02ed0bb MM |
433 | break; /* End loop when list is empty. */ |
434 | } | |
435 | } | |
436 | } | |
437 | ||
88d1aa9d | 438 | /* Add a struct record_full_entry to record_full_arch_list. */ |
d02ed0bb MM |
439 | |
440 | static void | |
88d1aa9d | 441 | record_full_arch_list_add (struct record_full_entry *rec) |
d02ed0bb MM |
442 | { |
443 | if (record_debug > 1) | |
444 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 445 | "Process record: record_full_arch_list_add %s.\n", |
d02ed0bb MM |
446 | host_address_to_string (rec)); |
447 | ||
88d1aa9d | 448 | if (record_full_arch_list_tail) |
d02ed0bb | 449 | { |
88d1aa9d MM |
450 | record_full_arch_list_tail->next = rec; |
451 | rec->prev = record_full_arch_list_tail; | |
452 | record_full_arch_list_tail = rec; | |
d02ed0bb MM |
453 | } |
454 | else | |
455 | { | |
88d1aa9d MM |
456 | record_full_arch_list_head = rec; |
457 | record_full_arch_list_tail = rec; | |
d02ed0bb MM |
458 | } |
459 | } | |
460 | ||
461 | /* Return the value storage location of a record entry. */ | |
462 | static inline gdb_byte * | |
88d1aa9d | 463 | record_full_get_loc (struct record_full_entry *rec) |
d02ed0bb MM |
464 | { |
465 | switch (rec->type) { | |
88d1aa9d | 466 | case record_full_mem: |
d02ed0bb MM |
467 | if (rec->u.mem.len > sizeof (rec->u.mem.u.buf)) |
468 | return rec->u.mem.u.ptr; | |
469 | else | |
470 | return rec->u.mem.u.buf; | |
88d1aa9d | 471 | case record_full_reg: |
d02ed0bb MM |
472 | if (rec->u.reg.len > sizeof (rec->u.reg.u.buf)) |
473 | return rec->u.reg.u.ptr; | |
474 | else | |
475 | return rec->u.reg.u.buf; | |
88d1aa9d | 476 | case record_full_end: |
d02ed0bb | 477 | default: |
88d1aa9d | 478 | gdb_assert_not_reached ("unexpected record_full_entry type"); |
d02ed0bb MM |
479 | return NULL; |
480 | } | |
481 | } | |
482 | ||
88d1aa9d | 483 | /* Record the value of a register NUM to record_full_arch_list. */ |
d02ed0bb MM |
484 | |
485 | int | |
25ea693b | 486 | record_full_arch_list_add_reg (struct regcache *regcache, int regnum) |
d02ed0bb | 487 | { |
88d1aa9d | 488 | struct record_full_entry *rec; |
d02ed0bb MM |
489 | |
490 | if (record_debug > 1) | |
491 | fprintf_unfiltered (gdb_stdlog, | |
492 | "Process record: add register num = %d to " | |
493 | "record list.\n", | |
494 | regnum); | |
495 | ||
88d1aa9d | 496 | rec = record_full_reg_alloc (regcache, regnum); |
d02ed0bb | 497 | |
88d1aa9d | 498 | regcache_raw_read (regcache, regnum, record_full_get_loc (rec)); |
d02ed0bb | 499 | |
88d1aa9d | 500 | record_full_arch_list_add (rec); |
d02ed0bb MM |
501 | |
502 | return 0; | |
503 | } | |
504 | ||
505 | /* Record the value of a region of memory whose address is ADDR and | |
88d1aa9d | 506 | length is LEN to record_full_arch_list. */ |
d02ed0bb MM |
507 | |
508 | int | |
25ea693b | 509 | record_full_arch_list_add_mem (CORE_ADDR addr, int len) |
d02ed0bb | 510 | { |
88d1aa9d | 511 | struct record_full_entry *rec; |
d02ed0bb MM |
512 | |
513 | if (record_debug > 1) | |
514 | fprintf_unfiltered (gdb_stdlog, | |
515 | "Process record: add mem addr = %s len = %d to " | |
516 | "record list.\n", | |
517 | paddress (target_gdbarch (), addr), len); | |
518 | ||
519 | if (!addr) /* FIXME: Why? Some arch must permit it... */ | |
520 | return 0; | |
521 | ||
88d1aa9d | 522 | rec = record_full_mem_alloc (addr, len); |
d02ed0bb | 523 | |
88d1aa9d MM |
524 | if (record_read_memory (target_gdbarch (), addr, |
525 | record_full_get_loc (rec), len)) | |
d02ed0bb | 526 | { |
88d1aa9d | 527 | record_full_mem_release (rec); |
d02ed0bb MM |
528 | return -1; |
529 | } | |
530 | ||
88d1aa9d | 531 | record_full_arch_list_add (rec); |
d02ed0bb MM |
532 | |
533 | return 0; | |
534 | } | |
535 | ||
88d1aa9d MM |
536 | /* Add a record_full_end type struct record_full_entry to |
537 | record_full_arch_list. */ | |
d02ed0bb MM |
538 | |
539 | int | |
25ea693b | 540 | record_full_arch_list_add_end (void) |
d02ed0bb | 541 | { |
88d1aa9d | 542 | struct record_full_entry *rec; |
d02ed0bb MM |
543 | |
544 | if (record_debug > 1) | |
545 | fprintf_unfiltered (gdb_stdlog, | |
546 | "Process record: add end to arch list.\n"); | |
547 | ||
88d1aa9d | 548 | rec = record_full_end_alloc (); |
d02ed0bb | 549 | rec->u.end.sigval = GDB_SIGNAL_0; |
88d1aa9d | 550 | rec->u.end.insn_num = ++record_full_insn_count; |
d02ed0bb | 551 | |
88d1aa9d | 552 | record_full_arch_list_add (rec); |
d02ed0bb MM |
553 | |
554 | return 0; | |
555 | } | |
556 | ||
557 | static void | |
88d1aa9d | 558 | record_full_check_insn_num (int set_terminal) |
d02ed0bb | 559 | { |
88d1aa9d | 560 | if (record_full_insn_max_num) |
d02ed0bb | 561 | { |
88d1aa9d MM |
562 | gdb_assert (record_full_insn_num <= record_full_insn_max_num); |
563 | if (record_full_insn_num == record_full_insn_max_num) | |
d02ed0bb MM |
564 | { |
565 | /* Ask user what to do. */ | |
88d1aa9d | 566 | if (record_full_stop_at_limit) |
d02ed0bb MM |
567 | { |
568 | int q; | |
569 | ||
570 | if (set_terminal) | |
571 | target_terminal_ours (); | |
572 | q = yquery (_("Do you want to auto delete previous execution " | |
573 | "log entries when record/replay buffer becomes " | |
574 | "full (record full stop-at-limit)?")); | |
575 | if (set_terminal) | |
576 | target_terminal_inferior (); | |
577 | if (q) | |
88d1aa9d | 578 | record_full_stop_at_limit = 0; |
d02ed0bb MM |
579 | else |
580 | error (_("Process record: stopped by user.")); | |
581 | } | |
582 | } | |
583 | } | |
584 | } | |
585 | ||
586 | static void | |
88d1aa9d | 587 | record_full_arch_list_cleanups (void *ignore) |
d02ed0bb | 588 | { |
88d1aa9d | 589 | record_full_list_release (record_full_arch_list_tail); |
d02ed0bb MM |
590 | } |
591 | ||
592 | /* Before inferior step (when GDB record the running message, inferior | |
593 | only can step), GDB will call this function to record the values to | |
88d1aa9d | 594 | record_full_list. This function will call gdbarch_process_record to |
d02ed0bb | 595 | record the running message of inferior and set them to |
88d1aa9d | 596 | record_full_arch_list, and add it to record_full_list. */ |
d02ed0bb MM |
597 | |
598 | static int | |
88d1aa9d | 599 | record_full_message (struct regcache *regcache, enum gdb_signal signal) |
d02ed0bb MM |
600 | { |
601 | int ret; | |
602 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
88d1aa9d MM |
603 | struct cleanup *old_cleanups |
604 | = make_cleanup (record_full_arch_list_cleanups, 0); | |
d02ed0bb | 605 | |
88d1aa9d MM |
606 | record_full_arch_list_head = NULL; |
607 | record_full_arch_list_tail = NULL; | |
d02ed0bb | 608 | |
88d1aa9d MM |
609 | /* Check record_full_insn_num. */ |
610 | record_full_check_insn_num (1); | |
d02ed0bb MM |
611 | |
612 | /* If gdb sends a signal value to target_resume, | |
613 | save it in the 'end' field of the previous instruction. | |
614 | ||
615 | Maybe process record should record what really happened, | |
616 | rather than what gdb pretends has happened. | |
617 | ||
618 | So if Linux delivered the signal to the child process during | |
619 | the record mode, we will record it and deliver it again in | |
620 | the replay mode. | |
621 | ||
622 | If user says "ignore this signal" during the record mode, then | |
623 | it will be ignored again during the replay mode (no matter if | |
624 | the user says something different, like "deliver this signal" | |
625 | during the replay mode). | |
626 | ||
627 | User should understand that nothing he does during the replay | |
628 | mode will change the behavior of the child. If he tries, | |
629 | then that is a user error. | |
630 | ||
631 | But we should still deliver the signal to gdb during the replay, | |
632 | if we delivered it during the recording. Therefore we should | |
88d1aa9d MM |
633 | record the signal during record_full_wait, not |
634 | record_full_resume. */ | |
635 | if (record_full_list != &record_full_first) /* FIXME better way to check */ | |
d02ed0bb | 636 | { |
88d1aa9d MM |
637 | gdb_assert (record_full_list->type == record_full_end); |
638 | record_full_list->u.end.sigval = signal; | |
d02ed0bb MM |
639 | } |
640 | ||
641 | if (signal == GDB_SIGNAL_0 | |
642 | || !gdbarch_process_record_signal_p (gdbarch)) | |
643 | ret = gdbarch_process_record (gdbarch, | |
644 | regcache, | |
645 | regcache_read_pc (regcache)); | |
646 | else | |
647 | ret = gdbarch_process_record_signal (gdbarch, | |
648 | regcache, | |
649 | signal); | |
650 | ||
651 | if (ret > 0) | |
652 | error (_("Process record: inferior program stopped.")); | |
653 | if (ret < 0) | |
654 | error (_("Process record: failed to record execution log.")); | |
655 | ||
656 | discard_cleanups (old_cleanups); | |
657 | ||
88d1aa9d MM |
658 | record_full_list->next = record_full_arch_list_head; |
659 | record_full_arch_list_head->prev = record_full_list; | |
660 | record_full_list = record_full_arch_list_tail; | |
d02ed0bb | 661 | |
88d1aa9d MM |
662 | if (record_full_insn_num == record_full_insn_max_num |
663 | && record_full_insn_max_num) | |
664 | record_full_list_release_first (); | |
d02ed0bb | 665 | else |
88d1aa9d | 666 | record_full_insn_num++; |
d02ed0bb MM |
667 | |
668 | return 1; | |
669 | } | |
670 | ||
88d1aa9d | 671 | struct record_full_message_args { |
d02ed0bb MM |
672 | struct regcache *regcache; |
673 | enum gdb_signal signal; | |
674 | }; | |
675 | ||
676 | static int | |
88d1aa9d | 677 | record_full_message_wrapper (void *args) |
d02ed0bb | 678 | { |
88d1aa9d | 679 | struct record_full_message_args *record_full_args = args; |
d02ed0bb | 680 | |
88d1aa9d MM |
681 | return record_full_message (record_full_args->regcache, |
682 | record_full_args->signal); | |
d02ed0bb MM |
683 | } |
684 | ||
685 | static int | |
88d1aa9d MM |
686 | record_full_message_wrapper_safe (struct regcache *regcache, |
687 | enum gdb_signal signal) | |
d02ed0bb | 688 | { |
88d1aa9d | 689 | struct record_full_message_args args; |
d02ed0bb MM |
690 | |
691 | args.regcache = regcache; | |
692 | args.signal = signal; | |
693 | ||
88d1aa9d MM |
694 | return catch_errors (record_full_message_wrapper, &args, NULL, |
695 | RETURN_MASK_ALL); | |
d02ed0bb MM |
696 | } |
697 | ||
88d1aa9d | 698 | /* Set to 1 if record_full_store_registers and record_full_xfer_partial |
d02ed0bb MM |
699 | doesn't need record. */ |
700 | ||
88d1aa9d | 701 | static int record_full_gdb_operation_disable = 0; |
d02ed0bb MM |
702 | |
703 | struct cleanup * | |
25ea693b | 704 | record_full_gdb_operation_disable_set (void) |
d02ed0bb MM |
705 | { |
706 | struct cleanup *old_cleanups = NULL; | |
707 | ||
708 | old_cleanups = | |
88d1aa9d MM |
709 | make_cleanup_restore_integer (&record_full_gdb_operation_disable); |
710 | record_full_gdb_operation_disable = 1; | |
d02ed0bb MM |
711 | |
712 | return old_cleanups; | |
713 | } | |
714 | ||
715 | /* Flag set to TRUE for target_stopped_by_watchpoint. */ | |
88d1aa9d | 716 | static int record_full_hw_watchpoint = 0; |
d02ed0bb MM |
717 | |
718 | /* Execute one instruction from the record log. Each instruction in | |
719 | the log will be represented by an arbitrary sequence of register | |
720 | entries and memory entries, followed by an 'end' entry. */ | |
721 | ||
722 | static inline void | |
88d1aa9d MM |
723 | record_full_exec_insn (struct regcache *regcache, |
724 | struct gdbarch *gdbarch, | |
725 | struct record_full_entry *entry) | |
d02ed0bb MM |
726 | { |
727 | switch (entry->type) | |
728 | { | |
88d1aa9d | 729 | case record_full_reg: /* reg */ |
d02ed0bb MM |
730 | { |
731 | gdb_byte reg[MAX_REGISTER_SIZE]; | |
732 | ||
733 | if (record_debug > 1) | |
734 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 735 | "Process record: record_full_reg %s to " |
d02ed0bb MM |
736 | "inferior num = %d.\n", |
737 | host_address_to_string (entry), | |
738 | entry->u.reg.num); | |
739 | ||
740 | regcache_cooked_read (regcache, entry->u.reg.num, reg); | |
741 | regcache_cooked_write (regcache, entry->u.reg.num, | |
88d1aa9d MM |
742 | record_full_get_loc (entry)); |
743 | memcpy (record_full_get_loc (entry), reg, entry->u.reg.len); | |
d02ed0bb MM |
744 | } |
745 | break; | |
746 | ||
88d1aa9d | 747 | case record_full_mem: /* mem */ |
d02ed0bb MM |
748 | { |
749 | /* Nothing to do if the entry is flagged not_accessible. */ | |
750 | if (!entry->u.mem.mem_entry_not_accessible) | |
751 | { | |
752 | gdb_byte *mem = alloca (entry->u.mem.len); | |
753 | ||
754 | if (record_debug > 1) | |
755 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 756 | "Process record: record_full_mem %s to " |
d02ed0bb MM |
757 | "inferior addr = %s len = %d.\n", |
758 | host_address_to_string (entry), | |
759 | paddress (gdbarch, entry->u.mem.addr), | |
760 | entry->u.mem.len); | |
761 | ||
762 | if (record_read_memory (gdbarch, | |
763 | entry->u.mem.addr, mem, entry->u.mem.len)) | |
764 | entry->u.mem.mem_entry_not_accessible = 1; | |
765 | else | |
766 | { | |
767 | if (target_write_memory (entry->u.mem.addr, | |
88d1aa9d | 768 | record_full_get_loc (entry), |
d02ed0bb MM |
769 | entry->u.mem.len)) |
770 | { | |
771 | entry->u.mem.mem_entry_not_accessible = 1; | |
772 | if (record_debug) | |
773 | warning (_("Process record: error writing memory at " | |
774 | "addr = %s len = %d."), | |
775 | paddress (gdbarch, entry->u.mem.addr), | |
776 | entry->u.mem.len); | |
777 | } | |
778 | else | |
779 | { | |
88d1aa9d MM |
780 | memcpy (record_full_get_loc (entry), mem, |
781 | entry->u.mem.len); | |
d02ed0bb MM |
782 | |
783 | /* We've changed memory --- check if a hardware | |
784 | watchpoint should trap. Note that this | |
785 | presently assumes the target beneath supports | |
786 | continuable watchpoints. On non-continuable | |
787 | watchpoints target, we'll want to check this | |
788 | _before_ actually doing the memory change, and | |
789 | not doing the change at all if the watchpoint | |
790 | traps. */ | |
791 | if (hardware_watchpoint_inserted_in_range | |
792 | (get_regcache_aspace (regcache), | |
793 | entry->u.mem.addr, entry->u.mem.len)) | |
88d1aa9d | 794 | record_full_hw_watchpoint = 1; |
d02ed0bb MM |
795 | } |
796 | } | |
797 | } | |
798 | } | |
799 | break; | |
800 | } | |
801 | } | |
802 | ||
803 | static struct target_ops *tmp_to_resume_ops; | |
804 | static void (*tmp_to_resume) (struct target_ops *, ptid_t, int, | |
805 | enum gdb_signal); | |
806 | static struct target_ops *tmp_to_wait_ops; | |
807 | static ptid_t (*tmp_to_wait) (struct target_ops *, ptid_t, | |
808 | struct target_waitstatus *, | |
809 | int); | |
810 | static struct target_ops *tmp_to_store_registers_ops; | |
811 | static void (*tmp_to_store_registers) (struct target_ops *, | |
812 | struct regcache *, | |
813 | int regno); | |
814 | static struct target_ops *tmp_to_xfer_partial_ops; | |
815 | static LONGEST (*tmp_to_xfer_partial) (struct target_ops *ops, | |
816 | enum target_object object, | |
817 | const char *annex, | |
818 | gdb_byte *readbuf, | |
819 | const gdb_byte *writebuf, | |
820 | ULONGEST offset, | |
821 | LONGEST len); | |
822 | static int (*tmp_to_insert_breakpoint) (struct gdbarch *, | |
823 | struct bp_target_info *); | |
824 | static int (*tmp_to_remove_breakpoint) (struct gdbarch *, | |
825 | struct bp_target_info *); | |
826 | static int (*tmp_to_stopped_by_watchpoint) (void); | |
827 | static int (*tmp_to_stopped_data_address) (struct target_ops *, CORE_ADDR *); | |
828 | static int (*tmp_to_stopped_data_address) (struct target_ops *, CORE_ADDR *); | |
829 | static void (*tmp_to_async) (void (*) (enum inferior_event_type, void *), void *); | |
830 | ||
88d1aa9d | 831 | static void record_full_restore (void); |
d02ed0bb MM |
832 | |
833 | /* Asynchronous signal handle registered as event loop source for when | |
834 | we have pending events ready to be passed to the core. */ | |
835 | ||
88d1aa9d | 836 | static struct async_event_handler *record_full_async_inferior_event_token; |
d02ed0bb MM |
837 | |
838 | static void | |
88d1aa9d | 839 | record_full_async_inferior_event_handler (gdb_client_data data) |
d02ed0bb MM |
840 | { |
841 | inferior_event_handler (INF_REG_EVENT, NULL); | |
842 | } | |
843 | ||
844 | /* Open the process record target. */ | |
845 | ||
846 | static void | |
88d1aa9d | 847 | record_full_core_open_1 (char *name, int from_tty) |
d02ed0bb MM |
848 | { |
849 | struct regcache *regcache = get_current_regcache (); | |
850 | int regnum = gdbarch_num_regs (get_regcache_arch (regcache)); | |
851 | int i; | |
852 | ||
88d1aa9d | 853 | /* Get record_full_core_regbuf. */ |
d02ed0bb | 854 | target_fetch_registers (regcache, -1); |
88d1aa9d | 855 | record_full_core_regbuf = xmalloc (MAX_REGISTER_SIZE * regnum); |
d02ed0bb MM |
856 | for (i = 0; i < regnum; i ++) |
857 | regcache_raw_collect (regcache, i, | |
88d1aa9d | 858 | record_full_core_regbuf + MAX_REGISTER_SIZE * i); |
d02ed0bb | 859 | |
88d1aa9d MM |
860 | /* Get record_full_core_start and record_full_core_end. */ |
861 | if (build_section_table (core_bfd, &record_full_core_start, | |
862 | &record_full_core_end)) | |
d02ed0bb | 863 | { |
88d1aa9d MM |
864 | xfree (record_full_core_regbuf); |
865 | record_full_core_regbuf = NULL; | |
d02ed0bb MM |
866 | error (_("\"%s\": Can't find sections: %s"), |
867 | bfd_get_filename (core_bfd), bfd_errmsg (bfd_get_error ())); | |
868 | } | |
869 | ||
88d1aa9d MM |
870 | push_target (&record_full_core_ops); |
871 | record_full_restore (); | |
d02ed0bb MM |
872 | } |
873 | ||
874 | /* "to_open" target method for 'live' processes. */ | |
875 | ||
876 | static void | |
88d1aa9d | 877 | record_full_open_1 (char *name, int from_tty) |
d02ed0bb MM |
878 | { |
879 | if (record_debug) | |
88d1aa9d | 880 | fprintf_unfiltered (gdb_stdlog, "Process record: record_full_open\n"); |
d02ed0bb MM |
881 | |
882 | /* check exec */ | |
883 | if (!target_has_execution) | |
884 | error (_("Process record: the program is not being run.")); | |
885 | if (non_stop) | |
886 | error (_("Process record target can't debug inferior in non-stop mode " | |
887 | "(non-stop).")); | |
888 | ||
889 | if (!gdbarch_process_record_p (target_gdbarch ())) | |
890 | error (_("Process record: the current architecture doesn't support " | |
891 | "record function.")); | |
892 | ||
893 | if (!tmp_to_resume) | |
894 | error (_("Could not find 'to_resume' method on the target stack.")); | |
895 | if (!tmp_to_wait) | |
896 | error (_("Could not find 'to_wait' method on the target stack.")); | |
897 | if (!tmp_to_store_registers) | |
898 | error (_("Could not find 'to_store_registers' " | |
899 | "method on the target stack.")); | |
900 | if (!tmp_to_insert_breakpoint) | |
901 | error (_("Could not find 'to_insert_breakpoint' " | |
902 | "method on the target stack.")); | |
903 | if (!tmp_to_remove_breakpoint) | |
904 | error (_("Could not find 'to_remove_breakpoint' " | |
905 | "method on the target stack.")); | |
906 | if (!tmp_to_stopped_by_watchpoint) | |
907 | error (_("Could not find 'to_stopped_by_watchpoint' " | |
908 | "method on the target stack.")); | |
909 | if (!tmp_to_stopped_data_address) | |
910 | error (_("Could not find 'to_stopped_data_address' " | |
911 | "method on the target stack.")); | |
912 | ||
88d1aa9d | 913 | push_target (&record_full_ops); |
d02ed0bb MM |
914 | } |
915 | ||
88d1aa9d | 916 | static void record_full_init_record_breakpoints (void); |
d02ed0bb MM |
917 | |
918 | /* "to_open" target method. Open the process record target. */ | |
919 | ||
920 | static void | |
88d1aa9d | 921 | record_full_open (char *name, int from_tty) |
d02ed0bb MM |
922 | { |
923 | struct target_ops *t; | |
924 | ||
925 | if (record_debug) | |
88d1aa9d | 926 | fprintf_unfiltered (gdb_stdlog, "Process record: record_full_open\n"); |
d02ed0bb MM |
927 | |
928 | /* Check if record target is already running. */ | |
929 | if (current_target.to_stratum == record_stratum) | |
930 | error (_("Process record target already running. Use \"record stop\" to " | |
931 | "stop record target first.")); | |
932 | ||
933 | /* Reset the tmp beneath pointers. */ | |
934 | tmp_to_resume_ops = NULL; | |
935 | tmp_to_resume = NULL; | |
936 | tmp_to_wait_ops = NULL; | |
937 | tmp_to_wait = NULL; | |
938 | tmp_to_store_registers_ops = NULL; | |
939 | tmp_to_store_registers = NULL; | |
940 | tmp_to_xfer_partial_ops = NULL; | |
941 | tmp_to_xfer_partial = NULL; | |
942 | tmp_to_insert_breakpoint = NULL; | |
943 | tmp_to_remove_breakpoint = NULL; | |
944 | tmp_to_stopped_by_watchpoint = NULL; | |
945 | tmp_to_stopped_data_address = NULL; | |
946 | tmp_to_async = NULL; | |
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) | |
972 | tmp_to_insert_breakpoint = t->to_insert_breakpoint; | |
973 | if (!tmp_to_remove_breakpoint) | |
974 | tmp_to_remove_breakpoint = t->to_remove_breakpoint; | |
975 | if (!tmp_to_stopped_by_watchpoint) | |
976 | tmp_to_stopped_by_watchpoint = t->to_stopped_by_watchpoint; | |
977 | if (!tmp_to_stopped_data_address) | |
978 | tmp_to_stopped_data_address = t->to_stopped_data_address; | |
979 | if (!tmp_to_async) | |
980 | tmp_to_async = t->to_async; | |
981 | } | |
982 | if (!tmp_to_xfer_partial) | |
983 | error (_("Could not find 'to_xfer_partial' method on the target stack.")); | |
984 | ||
985 | /* Reset */ | |
88d1aa9d MM |
986 | record_full_insn_num = 0; |
987 | record_full_insn_count = 0; | |
988 | record_full_list = &record_full_first; | |
989 | record_full_list->next = NULL; | |
d02ed0bb MM |
990 | |
991 | /* Set the tmp beneath pointers to beneath pointers. */ | |
88d1aa9d MM |
992 | record_full_beneath_to_resume_ops = tmp_to_resume_ops; |
993 | record_full_beneath_to_resume = tmp_to_resume; | |
994 | record_full_beneath_to_wait_ops = tmp_to_wait_ops; | |
995 | record_full_beneath_to_wait = tmp_to_wait; | |
996 | record_full_beneath_to_store_registers_ops = tmp_to_store_registers_ops; | |
997 | record_full_beneath_to_store_registers = tmp_to_store_registers; | |
998 | record_full_beneath_to_xfer_partial_ops = tmp_to_xfer_partial_ops; | |
999 | record_full_beneath_to_xfer_partial = tmp_to_xfer_partial; | |
1000 | record_full_beneath_to_insert_breakpoint = tmp_to_insert_breakpoint; | |
1001 | record_full_beneath_to_remove_breakpoint = tmp_to_remove_breakpoint; | |
1002 | record_full_beneath_to_stopped_by_watchpoint = tmp_to_stopped_by_watchpoint; | |
1003 | record_full_beneath_to_stopped_data_address = tmp_to_stopped_data_address; | |
1004 | record_full_beneath_to_async = tmp_to_async; | |
d02ed0bb MM |
1005 | |
1006 | if (core_bfd) | |
88d1aa9d | 1007 | record_full_core_open_1 (name, from_tty); |
d02ed0bb | 1008 | else |
88d1aa9d | 1009 | record_full_open_1 (name, from_tty); |
d02ed0bb MM |
1010 | |
1011 | /* Register extra event sources in the event loop. */ | |
88d1aa9d MM |
1012 | record_full_async_inferior_event_token |
1013 | = create_async_event_handler (record_full_async_inferior_event_handler, | |
d02ed0bb MM |
1014 | NULL); |
1015 | ||
88d1aa9d | 1016 | record_full_init_record_breakpoints (); |
d02ed0bb MM |
1017 | |
1018 | observer_notify_record_changed (current_inferior (), 1); | |
1019 | } | |
1020 | ||
1021 | /* "to_close" target method. Close the process record target. */ | |
1022 | ||
1023 | static void | |
88d1aa9d | 1024 | record_full_close (int quitting) |
d02ed0bb | 1025 | { |
88d1aa9d | 1026 | struct record_full_core_buf_entry *entry; |
d02ed0bb MM |
1027 | |
1028 | if (record_debug) | |
88d1aa9d | 1029 | fprintf_unfiltered (gdb_stdlog, "Process record: record_full_close\n"); |
d02ed0bb | 1030 | |
88d1aa9d | 1031 | record_full_list_release (record_full_list); |
d02ed0bb | 1032 | |
88d1aa9d MM |
1033 | /* Release record_full_core_regbuf. */ |
1034 | if (record_full_core_regbuf) | |
d02ed0bb | 1035 | { |
88d1aa9d MM |
1036 | xfree (record_full_core_regbuf); |
1037 | record_full_core_regbuf = NULL; | |
d02ed0bb MM |
1038 | } |
1039 | ||
88d1aa9d MM |
1040 | /* Release record_full_core_buf_list. */ |
1041 | if (record_full_core_buf_list) | |
d02ed0bb | 1042 | { |
88d1aa9d MM |
1043 | for (entry = record_full_core_buf_list->prev; entry; |
1044 | entry = entry->prev) | |
d02ed0bb | 1045 | { |
88d1aa9d MM |
1046 | xfree (record_full_core_buf_list); |
1047 | record_full_core_buf_list = entry; | |
d02ed0bb | 1048 | } |
88d1aa9d | 1049 | record_full_core_buf_list = NULL; |
d02ed0bb MM |
1050 | } |
1051 | ||
88d1aa9d MM |
1052 | if (record_full_async_inferior_event_token) |
1053 | delete_async_event_handler (&record_full_async_inferior_event_token); | |
d02ed0bb MM |
1054 | } |
1055 | ||
88d1aa9d | 1056 | static int record_full_resume_step = 0; |
d02ed0bb | 1057 | |
88d1aa9d MM |
1058 | /* True if we've been resumed, and so each record_full_wait call should |
1059 | advance execution. If this is false, record_full_wait will return a | |
d02ed0bb | 1060 | TARGET_WAITKIND_IGNORE. */ |
88d1aa9d | 1061 | static int record_full_resumed = 0; |
d02ed0bb MM |
1062 | |
1063 | /* The execution direction of the last resume we got. This is | |
1064 | necessary for async mode. Vis (order is not strictly accurate): | |
1065 | ||
1066 | 1. user has the global execution direction set to forward | |
1067 | 2. user does a reverse-step command | |
88d1aa9d | 1068 | 3. record_full_resume is called with global execution direction |
d02ed0bb MM |
1069 | temporarily switched to reverse |
1070 | 4. GDB's execution direction is reverted back to forward | |
1071 | 5. target record notifies event loop there's an event to handle | |
1072 | 6. infrun asks the target which direction was it going, and switches | |
1073 | the global execution direction accordingly (to reverse) | |
1074 | 7. infrun polls an event out of the record target, and handles it | |
1075 | 8. GDB goes back to the event loop, and goto #4. | |
1076 | */ | |
88d1aa9d | 1077 | static enum exec_direction_kind record_full_execution_dir = EXEC_FORWARD; |
d02ed0bb MM |
1078 | |
1079 | /* "to_resume" target method. Resume the process record target. */ | |
1080 | ||
1081 | static void | |
88d1aa9d MM |
1082 | record_full_resume (struct target_ops *ops, ptid_t ptid, int step, |
1083 | enum gdb_signal signal) | |
d02ed0bb | 1084 | { |
88d1aa9d MM |
1085 | record_full_resume_step = step; |
1086 | record_full_resumed = 1; | |
1087 | record_full_execution_dir = execution_direction; | |
d02ed0bb | 1088 | |
88d1aa9d | 1089 | if (!RECORD_FULL_IS_REPLAY) |
d02ed0bb MM |
1090 | { |
1091 | struct gdbarch *gdbarch = target_thread_architecture (ptid); | |
1092 | ||
88d1aa9d | 1093 | record_full_message (get_current_regcache (), signal); |
d02ed0bb MM |
1094 | |
1095 | if (!step) | |
1096 | { | |
1097 | /* This is not hard single step. */ | |
1098 | if (!gdbarch_software_single_step_p (gdbarch)) | |
1099 | { | |
1100 | /* This is a normal continue. */ | |
1101 | step = 1; | |
1102 | } | |
1103 | else | |
1104 | { | |
1105 | /* This arch support soft sigle step. */ | |
1106 | if (single_step_breakpoints_inserted ()) | |
1107 | { | |
1108 | /* This is a soft single step. */ | |
88d1aa9d | 1109 | record_full_resume_step = 1; |
d02ed0bb MM |
1110 | } |
1111 | else | |
1112 | { | |
1113 | /* This is a continue. | |
1114 | Try to insert a soft single step breakpoint. */ | |
1115 | if (!gdbarch_software_single_step (gdbarch, | |
1116 | get_current_frame ())) | |
1117 | { | |
1118 | /* This system don't want use soft single step. | |
1119 | Use hard sigle step. */ | |
1120 | step = 1; | |
1121 | } | |
1122 | } | |
1123 | } | |
1124 | } | |
1125 | ||
1126 | /* Make sure the target beneath reports all signals. */ | |
1127 | target_pass_signals (0, NULL); | |
1128 | ||
88d1aa9d MM |
1129 | record_full_beneath_to_resume (record_full_beneath_to_resume_ops, |
1130 | ptid, step, signal); | |
d02ed0bb MM |
1131 | } |
1132 | ||
1133 | /* We are about to start executing the inferior (or simulate it), | |
1134 | let's register it with the event loop. */ | |
1135 | if (target_can_async_p ()) | |
1136 | { | |
1137 | target_async (inferior_event_handler, 0); | |
1138 | /* Notify the event loop there's an event to wait for. We do | |
88d1aa9d MM |
1139 | most of the work in record_full_wait. */ |
1140 | mark_async_event_handler (record_full_async_inferior_event_token); | |
d02ed0bb MM |
1141 | } |
1142 | } | |
1143 | ||
88d1aa9d | 1144 | static int record_full_get_sig = 0; |
d02ed0bb MM |
1145 | |
1146 | /* SIGINT signal handler, registered by "to_wait" method. */ | |
1147 | ||
1148 | static void | |
88d1aa9d | 1149 | record_full_sig_handler (int signo) |
d02ed0bb MM |
1150 | { |
1151 | if (record_debug) | |
1152 | fprintf_unfiltered (gdb_stdlog, "Process record: get a signal\n"); | |
1153 | ||
1154 | /* It will break the running inferior in replay mode. */ | |
88d1aa9d | 1155 | record_full_resume_step = 1; |
d02ed0bb | 1156 | |
88d1aa9d | 1157 | /* It will let record_full_wait set inferior status to get the signal |
d02ed0bb | 1158 | SIGINT. */ |
88d1aa9d | 1159 | record_full_get_sig = 1; |
d02ed0bb MM |
1160 | } |
1161 | ||
1162 | static void | |
88d1aa9d | 1163 | record_full_wait_cleanups (void *ignore) |
d02ed0bb MM |
1164 | { |
1165 | if (execution_direction == EXEC_REVERSE) | |
1166 | { | |
88d1aa9d MM |
1167 | if (record_full_list->next) |
1168 | record_full_list = record_full_list->next; | |
d02ed0bb MM |
1169 | } |
1170 | else | |
88d1aa9d | 1171 | record_full_list = record_full_list->prev; |
d02ed0bb MM |
1172 | } |
1173 | ||
1174 | /* "to_wait" target method for process record target. | |
1175 | ||
1176 | In record mode, the target is always run in singlestep mode | |
1177 | (even when gdb says to continue). The to_wait method intercepts | |
1178 | the stop events and determines which ones are to be passed on to | |
1179 | gdb. Most stop events are just singlestep events that gdb is not | |
1180 | to know about, so the to_wait method just records them and keeps | |
1181 | singlestepping. | |
1182 | ||
1183 | In replay mode, this function emulates the recorded execution log, | |
1184 | one instruction at a time (forward or backward), and determines | |
1185 | where to stop. */ | |
1186 | ||
1187 | static ptid_t | |
88d1aa9d MM |
1188 | record_full_wait_1 (struct target_ops *ops, |
1189 | ptid_t ptid, struct target_waitstatus *status, | |
1190 | int options) | |
d02ed0bb | 1191 | { |
25ea693b | 1192 | struct cleanup *set_cleanups = record_full_gdb_operation_disable_set (); |
d02ed0bb MM |
1193 | |
1194 | if (record_debug) | |
1195 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d MM |
1196 | "Process record: record_full_wait " |
1197 | "record_full_resume_step = %d, " | |
1198 | "record_full_resumed = %d, direction=%s\n", | |
1199 | record_full_resume_step, record_full_resumed, | |
1200 | record_full_execution_dir == EXEC_FORWARD | |
1201 | ? "forward" : "reverse"); | |
1202 | ||
1203 | if (!record_full_resumed) | |
d02ed0bb MM |
1204 | { |
1205 | gdb_assert ((options & TARGET_WNOHANG) != 0); | |
1206 | ||
1207 | /* No interesting event. */ | |
1208 | status->kind = TARGET_WAITKIND_IGNORE; | |
1209 | return minus_one_ptid; | |
1210 | } | |
1211 | ||
88d1aa9d MM |
1212 | record_full_get_sig = 0; |
1213 | signal (SIGINT, record_full_sig_handler); | |
d02ed0bb | 1214 | |
88d1aa9d | 1215 | if (!RECORD_FULL_IS_REPLAY && ops != &record_full_core_ops) |
d02ed0bb | 1216 | { |
88d1aa9d | 1217 | if (record_full_resume_step) |
d02ed0bb MM |
1218 | { |
1219 | /* This is a single step. */ | |
88d1aa9d MM |
1220 | return record_full_beneath_to_wait (record_full_beneath_to_wait_ops, |
1221 | ptid, status, options); | |
d02ed0bb MM |
1222 | } |
1223 | else | |
1224 | { | |
1225 | /* This is not a single step. */ | |
1226 | ptid_t ret; | |
1227 | CORE_ADDR tmp_pc; | |
1228 | struct gdbarch *gdbarch = target_thread_architecture (inferior_ptid); | |
1229 | ||
1230 | while (1) | |
1231 | { | |
88d1aa9d MM |
1232 | ret = record_full_beneath_to_wait |
1233 | (record_full_beneath_to_wait_ops, ptid, status, options); | |
d02ed0bb MM |
1234 | if (status->kind == TARGET_WAITKIND_IGNORE) |
1235 | { | |
1236 | if (record_debug) | |
1237 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 1238 | "Process record: record_full_wait " |
d02ed0bb MM |
1239 | "target beneath not done yet\n"); |
1240 | return ret; | |
1241 | } | |
1242 | ||
1243 | if (single_step_breakpoints_inserted ()) | |
1244 | remove_single_step_breakpoints (); | |
1245 | ||
88d1aa9d | 1246 | if (record_full_resume_step) |
d02ed0bb MM |
1247 | return ret; |
1248 | ||
1249 | /* Is this a SIGTRAP? */ | |
1250 | if (status->kind == TARGET_WAITKIND_STOPPED | |
1251 | && status->value.sig == GDB_SIGNAL_TRAP) | |
1252 | { | |
1253 | struct regcache *regcache; | |
1254 | struct address_space *aspace; | |
1255 | ||
1256 | /* Yes -- this is likely our single-step finishing, | |
1257 | but check if there's any reason the core would be | |
1258 | interested in the event. */ | |
1259 | ||
1260 | registers_changed (); | |
1261 | regcache = get_current_regcache (); | |
1262 | tmp_pc = regcache_read_pc (regcache); | |
1263 | aspace = get_regcache_aspace (regcache); | |
1264 | ||
1265 | if (target_stopped_by_watchpoint ()) | |
1266 | { | |
1267 | /* Always interested in watchpoints. */ | |
1268 | } | |
1269 | else if (breakpoint_inserted_here_p (aspace, tmp_pc)) | |
1270 | { | |
1271 | /* There is a breakpoint here. Let the core | |
1272 | handle it. */ | |
1273 | if (software_breakpoint_inserted_here_p (aspace, tmp_pc)) | |
1274 | { | |
1275 | struct gdbarch *gdbarch | |
1276 | = get_regcache_arch (regcache); | |
1277 | CORE_ADDR decr_pc_after_break | |
1278 | = gdbarch_decr_pc_after_break (gdbarch); | |
1279 | if (decr_pc_after_break) | |
1280 | regcache_write_pc (regcache, | |
1281 | tmp_pc + decr_pc_after_break); | |
1282 | } | |
1283 | } | |
1284 | else | |
1285 | { | |
1286 | /* This is a single-step trap. Record the | |
1287 | insn and issue another step. | |
1288 | FIXME: this part can be a random SIGTRAP too. | |
1289 | But GDB cannot handle it. */ | |
1290 | int step = 1; | |
1291 | ||
88d1aa9d MM |
1292 | if (!record_full_message_wrapper_safe (regcache, |
1293 | GDB_SIGNAL_0)) | |
d02ed0bb MM |
1294 | { |
1295 | status->kind = TARGET_WAITKIND_STOPPED; | |
1296 | status->value.sig = GDB_SIGNAL_0; | |
1297 | break; | |
1298 | } | |
1299 | ||
1300 | if (gdbarch_software_single_step_p (gdbarch)) | |
1301 | { | |
1302 | /* Try to insert the software single step breakpoint. | |
1303 | If insert success, set step to 0. */ | |
1304 | set_executing (inferior_ptid, 0); | |
1305 | reinit_frame_cache (); | |
1306 | if (gdbarch_software_single_step (gdbarch, | |
1307 | get_current_frame ())) | |
1308 | step = 0; | |
1309 | set_executing (inferior_ptid, 1); | |
1310 | } | |
1311 | ||
1312 | if (record_debug) | |
1313 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d MM |
1314 | "Process record: record_full_wait " |
1315 | "issuing one more step in the " | |
1316 | "target beneath\n"); | |
1317 | record_full_beneath_to_resume | |
1318 | (record_full_beneath_to_resume_ops, ptid, step, | |
1319 | GDB_SIGNAL_0); | |
d02ed0bb MM |
1320 | continue; |
1321 | } | |
1322 | } | |
1323 | ||
1324 | /* The inferior is broken by a breakpoint or a signal. */ | |
1325 | break; | |
1326 | } | |
1327 | ||
1328 | return ret; | |
1329 | } | |
1330 | } | |
1331 | else | |
1332 | { | |
1333 | struct regcache *regcache = get_current_regcache (); | |
1334 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
1335 | struct address_space *aspace = get_regcache_aspace (regcache); | |
1336 | int continue_flag = 1; | |
88d1aa9d MM |
1337 | int first_record_full_end = 1; |
1338 | struct cleanup *old_cleanups | |
1339 | = make_cleanup (record_full_wait_cleanups, 0); | |
d02ed0bb MM |
1340 | CORE_ADDR tmp_pc; |
1341 | ||
88d1aa9d | 1342 | record_full_hw_watchpoint = 0; |
d02ed0bb MM |
1343 | status->kind = TARGET_WAITKIND_STOPPED; |
1344 | ||
1345 | /* Check breakpoint when forward execute. */ | |
1346 | if (execution_direction == EXEC_FORWARD) | |
1347 | { | |
1348 | tmp_pc = regcache_read_pc (regcache); | |
1349 | if (breakpoint_inserted_here_p (aspace, tmp_pc)) | |
1350 | { | |
1351 | int decr_pc_after_break = gdbarch_decr_pc_after_break (gdbarch); | |
1352 | ||
1353 | if (record_debug) | |
1354 | fprintf_unfiltered (gdb_stdlog, | |
1355 | "Process record: break at %s.\n", | |
1356 | paddress (gdbarch, tmp_pc)); | |
1357 | ||
1358 | if (decr_pc_after_break | |
88d1aa9d | 1359 | && !record_full_resume_step |
d02ed0bb MM |
1360 | && software_breakpoint_inserted_here_p (aspace, tmp_pc)) |
1361 | regcache_write_pc (regcache, | |
1362 | tmp_pc + decr_pc_after_break); | |
1363 | goto replay_out; | |
1364 | } | |
1365 | } | |
1366 | ||
1367 | /* If GDB is in terminal_inferior mode, it will not get the signal. | |
1368 | And in GDB replay mode, GDB doesn't need to be in terminal_inferior | |
1369 | mode, because inferior will not executed. | |
1370 | Then set it to terminal_ours to make GDB get the signal. */ | |
1371 | target_terminal_ours (); | |
1372 | ||
88d1aa9d | 1373 | /* In EXEC_FORWARD mode, record_full_list points to the tail of prev |
d02ed0bb | 1374 | instruction. */ |
88d1aa9d MM |
1375 | if (execution_direction == EXEC_FORWARD && record_full_list->next) |
1376 | record_full_list = record_full_list->next; | |
d02ed0bb | 1377 | |
88d1aa9d | 1378 | /* Loop over the record_full_list, looking for the next place to |
d02ed0bb MM |
1379 | stop. */ |
1380 | do | |
1381 | { | |
1382 | /* Check for beginning and end of log. */ | |
1383 | if (execution_direction == EXEC_REVERSE | |
88d1aa9d | 1384 | && record_full_list == &record_full_first) |
d02ed0bb MM |
1385 | { |
1386 | /* Hit beginning of record log in reverse. */ | |
1387 | status->kind = TARGET_WAITKIND_NO_HISTORY; | |
1388 | break; | |
1389 | } | |
88d1aa9d | 1390 | if (execution_direction != EXEC_REVERSE && !record_full_list->next) |
d02ed0bb MM |
1391 | { |
1392 | /* Hit end of record log going forward. */ | |
1393 | status->kind = TARGET_WAITKIND_NO_HISTORY; | |
1394 | break; | |
1395 | } | |
1396 | ||
88d1aa9d | 1397 | record_full_exec_insn (regcache, gdbarch, record_full_list); |
d02ed0bb | 1398 | |
88d1aa9d | 1399 | if (record_full_list->type == record_full_end) |
d02ed0bb MM |
1400 | { |
1401 | if (record_debug > 1) | |
1402 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 1403 | "Process record: record_full_end %s to " |
d02ed0bb | 1404 | "inferior.\n", |
88d1aa9d | 1405 | host_address_to_string (record_full_list)); |
d02ed0bb | 1406 | |
88d1aa9d | 1407 | if (first_record_full_end && execution_direction == EXEC_REVERSE) |
d02ed0bb | 1408 | { |
88d1aa9d MM |
1409 | /* When reverse excute, the first record_full_end is the |
1410 | part of current instruction. */ | |
1411 | first_record_full_end = 0; | |
d02ed0bb MM |
1412 | } |
1413 | else | |
1414 | { | |
88d1aa9d | 1415 | /* In EXEC_REVERSE mode, this is the record_full_end of prev |
d02ed0bb | 1416 | instruction. |
88d1aa9d MM |
1417 | In EXEC_FORWARD mode, this is the record_full_end of |
1418 | current instruction. */ | |
d02ed0bb | 1419 | /* step */ |
88d1aa9d | 1420 | if (record_full_resume_step) |
d02ed0bb MM |
1421 | { |
1422 | if (record_debug > 1) | |
1423 | fprintf_unfiltered (gdb_stdlog, | |
1424 | "Process record: step.\n"); | |
1425 | continue_flag = 0; | |
1426 | } | |
1427 | ||
1428 | /* check breakpoint */ | |
1429 | tmp_pc = regcache_read_pc (regcache); | |
1430 | if (breakpoint_inserted_here_p (aspace, tmp_pc)) | |
1431 | { | |
1432 | int decr_pc_after_break | |
1433 | = gdbarch_decr_pc_after_break (gdbarch); | |
1434 | ||
1435 | if (record_debug) | |
1436 | fprintf_unfiltered (gdb_stdlog, | |
1437 | "Process record: break " | |
1438 | "at %s.\n", | |
1439 | paddress (gdbarch, tmp_pc)); | |
1440 | if (decr_pc_after_break | |
1441 | && execution_direction == EXEC_FORWARD | |
88d1aa9d | 1442 | && !record_full_resume_step |
d02ed0bb MM |
1443 | && software_breakpoint_inserted_here_p (aspace, |
1444 | tmp_pc)) | |
1445 | regcache_write_pc (regcache, | |
1446 | tmp_pc + decr_pc_after_break); | |
1447 | continue_flag = 0; | |
1448 | } | |
1449 | ||
88d1aa9d | 1450 | if (record_full_hw_watchpoint) |
d02ed0bb MM |
1451 | { |
1452 | if (record_debug) | |
1453 | fprintf_unfiltered (gdb_stdlog, | |
1454 | "Process record: hit hw " | |
1455 | "watchpoint.\n"); | |
1456 | continue_flag = 0; | |
1457 | } | |
1458 | /* Check target signal */ | |
88d1aa9d | 1459 | if (record_full_list->u.end.sigval != GDB_SIGNAL_0) |
d02ed0bb MM |
1460 | /* FIXME: better way to check */ |
1461 | continue_flag = 0; | |
1462 | } | |
1463 | } | |
1464 | ||
1465 | if (continue_flag) | |
1466 | { | |
1467 | if (execution_direction == EXEC_REVERSE) | |
1468 | { | |
88d1aa9d MM |
1469 | if (record_full_list->prev) |
1470 | record_full_list = record_full_list->prev; | |
d02ed0bb MM |
1471 | } |
1472 | else | |
1473 | { | |
88d1aa9d MM |
1474 | if (record_full_list->next) |
1475 | record_full_list = record_full_list->next; | |
d02ed0bb MM |
1476 | } |
1477 | } | |
1478 | } | |
1479 | while (continue_flag); | |
1480 | ||
1481 | replay_out: | |
88d1aa9d | 1482 | if (record_full_get_sig) |
d02ed0bb | 1483 | status->value.sig = GDB_SIGNAL_INT; |
88d1aa9d | 1484 | else if (record_full_list->u.end.sigval != GDB_SIGNAL_0) |
d02ed0bb | 1485 | /* FIXME: better way to check */ |
88d1aa9d | 1486 | status->value.sig = record_full_list->u.end.sigval; |
d02ed0bb MM |
1487 | else |
1488 | status->value.sig = GDB_SIGNAL_TRAP; | |
1489 | ||
1490 | discard_cleanups (old_cleanups); | |
1491 | } | |
1492 | ||
1493 | signal (SIGINT, handle_sigint); | |
1494 | ||
1495 | do_cleanups (set_cleanups); | |
1496 | return inferior_ptid; | |
1497 | } | |
1498 | ||
1499 | static ptid_t | |
88d1aa9d MM |
1500 | record_full_wait (struct target_ops *ops, |
1501 | ptid_t ptid, struct target_waitstatus *status, | |
1502 | int options) | |
d02ed0bb MM |
1503 | { |
1504 | ptid_t return_ptid; | |
1505 | ||
88d1aa9d | 1506 | return_ptid = record_full_wait_1 (ops, ptid, status, options); |
d02ed0bb MM |
1507 | if (status->kind != TARGET_WAITKIND_IGNORE) |
1508 | { | |
1509 | /* We're reporting a stop. Make sure any spurious | |
1510 | target_wait(WNOHANG) doesn't advance the target until the | |
1511 | core wants us resumed again. */ | |
88d1aa9d | 1512 | record_full_resumed = 0; |
d02ed0bb MM |
1513 | } |
1514 | return return_ptid; | |
1515 | } | |
1516 | ||
1517 | static int | |
88d1aa9d | 1518 | record_full_stopped_by_watchpoint (void) |
d02ed0bb | 1519 | { |
88d1aa9d MM |
1520 | if (RECORD_FULL_IS_REPLAY) |
1521 | return record_full_hw_watchpoint; | |
d02ed0bb | 1522 | else |
88d1aa9d | 1523 | return record_full_beneath_to_stopped_by_watchpoint (); |
d02ed0bb MM |
1524 | } |
1525 | ||
1526 | /* "to_disconnect" method for process record target. */ | |
1527 | ||
1528 | static void | |
88d1aa9d | 1529 | record_full_disconnect (struct target_ops *target, char *args, int from_tty) |
d02ed0bb MM |
1530 | { |
1531 | if (record_debug) | |
88d1aa9d MM |
1532 | fprintf_unfiltered (gdb_stdlog, |
1533 | "Process record: record_full_disconnect\n"); | |
d02ed0bb | 1534 | |
88d1aa9d | 1535 | unpush_target (&record_full_ops); |
d02ed0bb MM |
1536 | target_disconnect (args, from_tty); |
1537 | } | |
1538 | ||
1539 | /* "to_detach" method for process record target. */ | |
1540 | ||
1541 | static void | |
88d1aa9d | 1542 | record_full_detach (struct target_ops *ops, char *args, int from_tty) |
d02ed0bb MM |
1543 | { |
1544 | if (record_debug) | |
88d1aa9d | 1545 | fprintf_unfiltered (gdb_stdlog, "Process record: record_full_detach\n"); |
d02ed0bb | 1546 | |
88d1aa9d | 1547 | unpush_target (&record_full_ops); |
d02ed0bb MM |
1548 | target_detach (args, from_tty); |
1549 | } | |
1550 | ||
1551 | /* "to_mourn_inferior" method for process record target. */ | |
1552 | ||
1553 | static void | |
88d1aa9d | 1554 | record_full_mourn_inferior (struct target_ops *ops) |
d02ed0bb MM |
1555 | { |
1556 | if (record_debug) | |
1557 | fprintf_unfiltered (gdb_stdlog, "Process record: " | |
88d1aa9d | 1558 | "record_full_mourn_inferior\n"); |
d02ed0bb | 1559 | |
88d1aa9d | 1560 | unpush_target (&record_full_ops); |
d02ed0bb MM |
1561 | target_mourn_inferior (); |
1562 | } | |
1563 | ||
1564 | /* Close process record target before killing the inferior process. */ | |
1565 | ||
1566 | static void | |
88d1aa9d | 1567 | record_full_kill (struct target_ops *ops) |
d02ed0bb MM |
1568 | { |
1569 | if (record_debug) | |
88d1aa9d | 1570 | fprintf_unfiltered (gdb_stdlog, "Process record: record_full_kill\n"); |
d02ed0bb | 1571 | |
88d1aa9d | 1572 | unpush_target (&record_full_ops); |
d02ed0bb MM |
1573 | target_kill (); |
1574 | } | |
1575 | ||
1576 | static int | |
88d1aa9d | 1577 | record_full_stopped_data_address (struct target_ops *ops, CORE_ADDR *addr_p) |
d02ed0bb | 1578 | { |
88d1aa9d | 1579 | if (RECORD_FULL_IS_REPLAY) |
d02ed0bb MM |
1580 | return 0; |
1581 | else | |
88d1aa9d | 1582 | return record_full_beneath_to_stopped_data_address (ops, addr_p); |
d02ed0bb MM |
1583 | } |
1584 | ||
1585 | /* Record registers change (by user or by GDB) to list as an instruction. */ | |
1586 | ||
1587 | static void | |
88d1aa9d | 1588 | record_full_registers_change (struct regcache *regcache, int regnum) |
d02ed0bb | 1589 | { |
88d1aa9d MM |
1590 | /* Check record_full_insn_num. */ |
1591 | record_full_check_insn_num (0); | |
d02ed0bb | 1592 | |
88d1aa9d MM |
1593 | record_full_arch_list_head = NULL; |
1594 | record_full_arch_list_tail = NULL; | |
d02ed0bb MM |
1595 | |
1596 | if (regnum < 0) | |
1597 | { | |
1598 | int i; | |
1599 | ||
1600 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) | |
1601 | { | |
25ea693b | 1602 | if (record_full_arch_list_add_reg (regcache, i)) |
d02ed0bb | 1603 | { |
88d1aa9d | 1604 | record_full_list_release (record_full_arch_list_tail); |
d02ed0bb MM |
1605 | error (_("Process record: failed to record execution log.")); |
1606 | } | |
1607 | } | |
1608 | } | |
1609 | else | |
1610 | { | |
25ea693b | 1611 | if (record_full_arch_list_add_reg (regcache, regnum)) |
d02ed0bb | 1612 | { |
88d1aa9d | 1613 | record_full_list_release (record_full_arch_list_tail); |
d02ed0bb MM |
1614 | error (_("Process record: failed to record execution log.")); |
1615 | } | |
1616 | } | |
25ea693b | 1617 | if (record_full_arch_list_add_end ()) |
d02ed0bb | 1618 | { |
88d1aa9d | 1619 | record_full_list_release (record_full_arch_list_tail); |
d02ed0bb MM |
1620 | error (_("Process record: failed to record execution log.")); |
1621 | } | |
88d1aa9d MM |
1622 | record_full_list->next = record_full_arch_list_head; |
1623 | record_full_arch_list_head->prev = record_full_list; | |
1624 | record_full_list = record_full_arch_list_tail; | |
d02ed0bb | 1625 | |
88d1aa9d MM |
1626 | if (record_full_insn_num == record_full_insn_max_num |
1627 | && record_full_insn_max_num) | |
1628 | record_full_list_release_first (); | |
d02ed0bb | 1629 | else |
88d1aa9d | 1630 | record_full_insn_num++; |
d02ed0bb MM |
1631 | } |
1632 | ||
1633 | /* "to_store_registers" method for process record target. */ | |
1634 | ||
1635 | static void | |
88d1aa9d MM |
1636 | record_full_store_registers (struct target_ops *ops, |
1637 | struct regcache *regcache, | |
1638 | int regno) | |
d02ed0bb | 1639 | { |
88d1aa9d | 1640 | if (!record_full_gdb_operation_disable) |
d02ed0bb | 1641 | { |
88d1aa9d | 1642 | if (RECORD_FULL_IS_REPLAY) |
d02ed0bb MM |
1643 | { |
1644 | int n; | |
1645 | ||
1646 | /* Let user choose if he wants to write register or not. */ | |
1647 | if (regno < 0) | |
1648 | n = | |
1649 | query (_("Because GDB is in replay mode, changing the " | |
1650 | "value of a register will make the execution " | |
1651 | "log unusable from this point onward. " | |
1652 | "Change all registers?")); | |
1653 | else | |
1654 | n = | |
1655 | query (_("Because GDB is in replay mode, changing the value " | |
1656 | "of a register will make the execution log unusable " | |
1657 | "from this point onward. Change register %s?"), | |
1658 | gdbarch_register_name (get_regcache_arch (regcache), | |
1659 | regno)); | |
1660 | ||
1661 | if (!n) | |
1662 | { | |
1663 | /* Invalidate the value of regcache that was set in function | |
1664 | "regcache_raw_write". */ | |
1665 | if (regno < 0) | |
1666 | { | |
1667 | int i; | |
1668 | ||
1669 | for (i = 0; | |
1670 | i < gdbarch_num_regs (get_regcache_arch (regcache)); | |
1671 | i++) | |
1672 | regcache_invalidate (regcache, i); | |
1673 | } | |
1674 | else | |
1675 | regcache_invalidate (regcache, regno); | |
1676 | ||
1677 | error (_("Process record canceled the operation.")); | |
1678 | } | |
1679 | ||
1680 | /* Destroy the record from here forward. */ | |
88d1aa9d | 1681 | record_full_list_release_following (record_full_list); |
d02ed0bb MM |
1682 | } |
1683 | ||
88d1aa9d | 1684 | record_full_registers_change (regcache, regno); |
d02ed0bb | 1685 | } |
88d1aa9d MM |
1686 | record_full_beneath_to_store_registers |
1687 | (record_full_beneath_to_store_registers_ops, regcache, regno); | |
d02ed0bb MM |
1688 | } |
1689 | ||
88d1aa9d MM |
1690 | /* "to_xfer_partial" method. Behavior is conditional on |
1691 | RECORD_FULL_IS_REPLAY. | |
d02ed0bb MM |
1692 | In replay mode, we cannot write memory unles we are willing to |
1693 | invalidate the record/replay log from this point forward. */ | |
1694 | ||
1695 | static LONGEST | |
88d1aa9d MM |
1696 | record_full_xfer_partial (struct target_ops *ops, enum target_object object, |
1697 | const char *annex, gdb_byte *readbuf, | |
1698 | const gdb_byte *writebuf, ULONGEST offset, | |
1699 | LONGEST len) | |
d02ed0bb | 1700 | { |
88d1aa9d | 1701 | if (!record_full_gdb_operation_disable |
d02ed0bb MM |
1702 | && (object == TARGET_OBJECT_MEMORY |
1703 | || object == TARGET_OBJECT_RAW_MEMORY) && writebuf) | |
1704 | { | |
88d1aa9d | 1705 | if (RECORD_FULL_IS_REPLAY) |
d02ed0bb MM |
1706 | { |
1707 | /* Let user choose if he wants to write memory or not. */ | |
1708 | if (!query (_("Because GDB is in replay mode, writing to memory " | |
1709 | "will make the execution log unusable from this " | |
1710 | "point onward. Write memory at address %s?"), | |
1711 | paddress (target_gdbarch (), offset))) | |
1712 | error (_("Process record canceled the operation.")); | |
1713 | ||
1714 | /* Destroy the record from here forward. */ | |
88d1aa9d | 1715 | record_full_list_release_following (record_full_list); |
d02ed0bb MM |
1716 | } |
1717 | ||
88d1aa9d MM |
1718 | /* Check record_full_insn_num */ |
1719 | record_full_check_insn_num (0); | |
d02ed0bb MM |
1720 | |
1721 | /* Record registers change to list as an instruction. */ | |
88d1aa9d MM |
1722 | record_full_arch_list_head = NULL; |
1723 | record_full_arch_list_tail = NULL; | |
25ea693b | 1724 | if (record_full_arch_list_add_mem (offset, len)) |
d02ed0bb | 1725 | { |
88d1aa9d | 1726 | record_full_list_release (record_full_arch_list_tail); |
d02ed0bb MM |
1727 | if (record_debug) |
1728 | fprintf_unfiltered (gdb_stdlog, | |
1729 | "Process record: failed to record " | |
1730 | "execution log."); | |
1731 | return -1; | |
1732 | } | |
25ea693b | 1733 | if (record_full_arch_list_add_end ()) |
d02ed0bb | 1734 | { |
88d1aa9d | 1735 | record_full_list_release (record_full_arch_list_tail); |
d02ed0bb MM |
1736 | if (record_debug) |
1737 | fprintf_unfiltered (gdb_stdlog, | |
1738 | "Process record: failed to record " | |
1739 | "execution log."); | |
1740 | return -1; | |
1741 | } | |
88d1aa9d MM |
1742 | record_full_list->next = record_full_arch_list_head; |
1743 | record_full_arch_list_head->prev = record_full_list; | |
1744 | record_full_list = record_full_arch_list_tail; | |
d02ed0bb | 1745 | |
88d1aa9d MM |
1746 | if (record_full_insn_num == record_full_insn_max_num |
1747 | && record_full_insn_max_num) | |
1748 | record_full_list_release_first (); | |
d02ed0bb | 1749 | else |
88d1aa9d | 1750 | record_full_insn_num++; |
d02ed0bb MM |
1751 | } |
1752 | ||
88d1aa9d MM |
1753 | return record_full_beneath_to_xfer_partial |
1754 | (record_full_beneath_to_xfer_partial_ops, object, annex, | |
1755 | readbuf, writebuf, offset, len); | |
d02ed0bb MM |
1756 | } |
1757 | ||
1758 | /* This structure represents a breakpoint inserted while the record | |
1759 | target is active. We use this to know when to install/remove | |
1760 | breakpoints in/from the target beneath. For example, a breakpoint | |
1761 | may be inserted while recording, but removed when not replaying nor | |
1762 | recording. In that case, the breakpoint had not been inserted on | |
1763 | the target beneath, so we should not try to remove it there. */ | |
1764 | ||
88d1aa9d | 1765 | struct record_full_breakpoint |
d02ed0bb MM |
1766 | { |
1767 | /* The address and address space the breakpoint was set at. */ | |
1768 | struct address_space *address_space; | |
1769 | CORE_ADDR addr; | |
1770 | ||
1771 | /* True when the breakpoint has been also installed in the target | |
1772 | beneath. This will be false for breakpoints set during replay or | |
1773 | when recording. */ | |
1774 | int in_target_beneath; | |
1775 | }; | |
1776 | ||
88d1aa9d MM |
1777 | typedef struct record_full_breakpoint *record_full_breakpoint_p; |
1778 | DEF_VEC_P(record_full_breakpoint_p); | |
d02ed0bb MM |
1779 | |
1780 | /* The list of breakpoints inserted while the record target is | |
1781 | active. */ | |
88d1aa9d | 1782 | VEC(record_full_breakpoint_p) *record_full_breakpoints = NULL; |
d02ed0bb MM |
1783 | |
1784 | static void | |
88d1aa9d | 1785 | record_full_sync_record_breakpoints (struct bp_location *loc, void *data) |
d02ed0bb MM |
1786 | { |
1787 | if (loc->loc_type != bp_loc_software_breakpoint) | |
1788 | return; | |
1789 | ||
1790 | if (loc->inserted) | |
1791 | { | |
88d1aa9d | 1792 | struct record_full_breakpoint *bp = XNEW (struct record_full_breakpoint); |
d02ed0bb MM |
1793 | |
1794 | bp->addr = loc->target_info.placed_address; | |
1795 | bp->address_space = loc->target_info.placed_address_space; | |
1796 | ||
1797 | bp->in_target_beneath = 1; | |
1798 | ||
88d1aa9d | 1799 | VEC_safe_push (record_full_breakpoint_p, record_full_breakpoints, bp); |
d02ed0bb MM |
1800 | } |
1801 | } | |
1802 | ||
88d1aa9d | 1803 | /* Sync existing breakpoints to record_full_breakpoints. */ |
d02ed0bb MM |
1804 | |
1805 | static void | |
88d1aa9d | 1806 | record_full_init_record_breakpoints (void) |
d02ed0bb | 1807 | { |
88d1aa9d | 1808 | VEC_free (record_full_breakpoint_p, record_full_breakpoints); |
d02ed0bb | 1809 | |
88d1aa9d | 1810 | iterate_over_bp_locations (record_full_sync_record_breakpoints); |
d02ed0bb MM |
1811 | } |
1812 | ||
88d1aa9d | 1813 | /* Behavior is conditional on RECORD_FULL_IS_REPLAY. We will not actually |
d02ed0bb MM |
1814 | insert or remove breakpoints in the real target when replaying, nor |
1815 | when recording. */ | |
1816 | ||
1817 | static int | |
88d1aa9d MM |
1818 | record_full_insert_breakpoint (struct gdbarch *gdbarch, |
1819 | struct bp_target_info *bp_tgt) | |
d02ed0bb | 1820 | { |
88d1aa9d | 1821 | struct record_full_breakpoint *bp; |
d02ed0bb MM |
1822 | int in_target_beneath = 0; |
1823 | ||
88d1aa9d | 1824 | if (!RECORD_FULL_IS_REPLAY) |
d02ed0bb MM |
1825 | { |
1826 | /* When recording, we currently always single-step, so we don't | |
1827 | really need to install regular breakpoints in the inferior. | |
1828 | However, we do have to insert software single-step | |
1829 | breakpoints, in case the target can't hardware step. To keep | |
1830 | things single, we always insert. */ | |
1831 | struct cleanup *old_cleanups; | |
1832 | int ret; | |
1833 | ||
25ea693b | 1834 | old_cleanups = record_full_gdb_operation_disable_set (); |
88d1aa9d | 1835 | ret = record_full_beneath_to_insert_breakpoint (gdbarch, bp_tgt); |
d02ed0bb MM |
1836 | do_cleanups (old_cleanups); |
1837 | ||
1838 | if (ret != 0) | |
1839 | return ret; | |
1840 | ||
1841 | in_target_beneath = 1; | |
1842 | } | |
1843 | ||
88d1aa9d | 1844 | bp = XNEW (struct record_full_breakpoint); |
d02ed0bb MM |
1845 | bp->addr = bp_tgt->placed_address; |
1846 | bp->address_space = bp_tgt->placed_address_space; | |
1847 | bp->in_target_beneath = in_target_beneath; | |
88d1aa9d | 1848 | VEC_safe_push (record_full_breakpoint_p, record_full_breakpoints, bp); |
d02ed0bb MM |
1849 | return 0; |
1850 | } | |
1851 | ||
1852 | /* "to_remove_breakpoint" method for process record target. */ | |
1853 | ||
1854 | static int | |
88d1aa9d MM |
1855 | record_full_remove_breakpoint (struct gdbarch *gdbarch, |
1856 | struct bp_target_info *bp_tgt) | |
d02ed0bb | 1857 | { |
88d1aa9d | 1858 | struct record_full_breakpoint *bp; |
d02ed0bb MM |
1859 | int ix; |
1860 | ||
1861 | for (ix = 0; | |
88d1aa9d MM |
1862 | VEC_iterate (record_full_breakpoint_p, |
1863 | record_full_breakpoints, ix, bp); | |
d02ed0bb MM |
1864 | ++ix) |
1865 | { | |
1866 | if (bp->addr == bp_tgt->placed_address | |
1867 | && bp->address_space == bp_tgt->placed_address_space) | |
1868 | { | |
1869 | if (bp->in_target_beneath) | |
1870 | { | |
1871 | struct cleanup *old_cleanups; | |
1872 | int ret; | |
1873 | ||
25ea693b | 1874 | old_cleanups = record_full_gdb_operation_disable_set (); |
88d1aa9d | 1875 | ret = record_full_beneath_to_remove_breakpoint (gdbarch, bp_tgt); |
d02ed0bb MM |
1876 | do_cleanups (old_cleanups); |
1877 | ||
1878 | if (ret != 0) | |
1879 | return ret; | |
1880 | } | |
1881 | ||
88d1aa9d MM |
1882 | VEC_unordered_remove (record_full_breakpoint_p, |
1883 | record_full_breakpoints, ix); | |
d02ed0bb MM |
1884 | return 0; |
1885 | } | |
1886 | } | |
1887 | ||
1888 | gdb_assert_not_reached ("removing unknown breakpoint"); | |
1889 | } | |
1890 | ||
1891 | /* "to_can_execute_reverse" method for process record target. */ | |
1892 | ||
1893 | static int | |
88d1aa9d | 1894 | record_full_can_execute_reverse (void) |
d02ed0bb MM |
1895 | { |
1896 | return 1; | |
1897 | } | |
1898 | ||
1899 | /* "to_get_bookmark" method for process record and prec over core. */ | |
1900 | ||
1901 | static gdb_byte * | |
88d1aa9d | 1902 | record_full_get_bookmark (char *args, int from_tty) |
d02ed0bb MM |
1903 | { |
1904 | gdb_byte *ret = NULL; | |
1905 | ||
1906 | /* Return stringified form of instruction count. */ | |
88d1aa9d MM |
1907 | if (record_full_list && record_full_list->type == record_full_end) |
1908 | ret = xstrdup (pulongest (record_full_list->u.end.insn_num)); | |
d02ed0bb MM |
1909 | |
1910 | if (record_debug) | |
1911 | { | |
1912 | if (ret) | |
1913 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 1914 | "record_full_get_bookmark returns %s\n", ret); |
d02ed0bb MM |
1915 | else |
1916 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 1917 | "record_full_get_bookmark returns NULL\n"); |
d02ed0bb MM |
1918 | } |
1919 | return ret; | |
1920 | } | |
1921 | ||
1922 | /* "to_goto_bookmark" method for process record and prec over core. */ | |
1923 | ||
1924 | static void | |
88d1aa9d | 1925 | record_full_goto_bookmark (gdb_byte *bookmark, int from_tty) |
d02ed0bb MM |
1926 | { |
1927 | if (record_debug) | |
1928 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 1929 | "record_full_goto_bookmark receives %s\n", bookmark); |
d02ed0bb MM |
1930 | |
1931 | if (bookmark[0] == '\'' || bookmark[0] == '\"') | |
1932 | { | |
1933 | if (bookmark[strlen (bookmark) - 1] != bookmark[0]) | |
1934 | error (_("Unbalanced quotes: %s"), bookmark); | |
1935 | ||
1936 | /* Strip trailing quote. */ | |
1937 | bookmark[strlen (bookmark) - 1] = '\0'; | |
1938 | /* Strip leading quote. */ | |
1939 | bookmark++; | |
88d1aa9d | 1940 | /* Pass along to cmd_record_full_goto. */ |
d02ed0bb MM |
1941 | } |
1942 | ||
1943 | cmd_record_goto ((char *) bookmark, from_tty); | |
1944 | return; | |
1945 | } | |
1946 | ||
1947 | static void | |
88d1aa9d MM |
1948 | record_full_async (void (*callback) (enum inferior_event_type event_type, |
1949 | void *context), void *context) | |
d02ed0bb MM |
1950 | { |
1951 | /* If we're on top of a line target (e.g., linux-nat, remote), then | |
1952 | set it to async mode as well. Will be NULL if we're sitting on | |
1953 | top of the core target, for "record restore". */ | |
88d1aa9d MM |
1954 | if (record_full_beneath_to_async != NULL) |
1955 | record_full_beneath_to_async (callback, context); | |
d02ed0bb MM |
1956 | } |
1957 | ||
1958 | static int | |
88d1aa9d | 1959 | record_full_can_async_p (void) |
d02ed0bb MM |
1960 | { |
1961 | /* We only enable async when the user specifically asks for it. */ | |
1962 | return target_async_permitted; | |
1963 | } | |
1964 | ||
1965 | static int | |
88d1aa9d | 1966 | record_full_is_async_p (void) |
d02ed0bb MM |
1967 | { |
1968 | /* We only enable async when the user specifically asks for it. */ | |
1969 | return target_async_permitted; | |
1970 | } | |
1971 | ||
1972 | static enum exec_direction_kind | |
88d1aa9d | 1973 | record_full_execution_direction (void) |
d02ed0bb | 1974 | { |
88d1aa9d | 1975 | return record_full_execution_dir; |
d02ed0bb MM |
1976 | } |
1977 | ||
1978 | static void | |
88d1aa9d | 1979 | record_full_info (void) |
d02ed0bb | 1980 | { |
88d1aa9d | 1981 | struct record_full_entry *p; |
d02ed0bb | 1982 | |
88d1aa9d | 1983 | if (RECORD_FULL_IS_REPLAY) |
d02ed0bb MM |
1984 | printf_filtered (_("Replay mode:\n")); |
1985 | else | |
1986 | printf_filtered (_("Record mode:\n")); | |
1987 | ||
1988 | /* Find entry for first actual instruction in the log. */ | |
88d1aa9d MM |
1989 | for (p = record_full_first.next; |
1990 | p != NULL && p->type != record_full_end; | |
d02ed0bb MM |
1991 | p = p->next) |
1992 | ; | |
1993 | ||
1994 | /* Do we have a log at all? */ | |
88d1aa9d | 1995 | if (p != NULL && p->type == record_full_end) |
d02ed0bb MM |
1996 | { |
1997 | /* Display instruction number for first instruction in the log. */ | |
1998 | printf_filtered (_("Lowest recorded instruction number is %s.\n"), | |
1999 | pulongest (p->u.end.insn_num)); | |
2000 | ||
2001 | /* If in replay mode, display where we are in the log. */ | |
88d1aa9d | 2002 | if (RECORD_FULL_IS_REPLAY) |
d02ed0bb | 2003 | printf_filtered (_("Current instruction number is %s.\n"), |
88d1aa9d | 2004 | pulongest (record_full_list->u.end.insn_num)); |
d02ed0bb MM |
2005 | |
2006 | /* Display instruction number for last instruction in the log. */ | |
2007 | printf_filtered (_("Highest recorded instruction number is %s.\n"), | |
88d1aa9d | 2008 | pulongest (record_full_insn_count)); |
d02ed0bb MM |
2009 | |
2010 | /* Display log count. */ | |
2011 | printf_filtered (_("Log contains %d instructions.\n"), | |
88d1aa9d | 2012 | record_full_insn_num); |
d02ed0bb MM |
2013 | } |
2014 | else | |
2015 | printf_filtered (_("No instructions have been logged.\n")); | |
2016 | ||
2017 | /* Display max log size. */ | |
2018 | printf_filtered (_("Max logged instructions is %d.\n"), | |
88d1aa9d | 2019 | record_full_insn_max_num); |
d02ed0bb MM |
2020 | } |
2021 | ||
2022 | /* The "to_record_delete" target method. */ | |
2023 | ||
2024 | static void | |
88d1aa9d | 2025 | record_full_delete (void) |
d02ed0bb | 2026 | { |
88d1aa9d | 2027 | record_full_list_release_following (record_full_list); |
d02ed0bb MM |
2028 | } |
2029 | ||
2030 | /* The "to_record_is_replaying" target method. */ | |
2031 | ||
2032 | static int | |
88d1aa9d | 2033 | record_full_is_replaying (void) |
d02ed0bb | 2034 | { |
88d1aa9d | 2035 | return RECORD_FULL_IS_REPLAY; |
d02ed0bb MM |
2036 | } |
2037 | ||
2038 | /* Go to a specific entry. */ | |
2039 | ||
2040 | static void | |
88d1aa9d | 2041 | record_full_goto_entry (struct record_full_entry *p) |
d02ed0bb MM |
2042 | { |
2043 | if (p == NULL) | |
2044 | error (_("Target insn not found.")); | |
88d1aa9d | 2045 | else if (p == record_full_list) |
d02ed0bb | 2046 | error (_("Already at target insn.")); |
88d1aa9d | 2047 | else if (p->u.end.insn_num > record_full_list->u.end.insn_num) |
d02ed0bb MM |
2048 | { |
2049 | printf_filtered (_("Go forward to insn number %s\n"), | |
2050 | pulongest (p->u.end.insn_num)); | |
88d1aa9d | 2051 | record_full_goto_insn (p, EXEC_FORWARD); |
d02ed0bb MM |
2052 | } |
2053 | else | |
2054 | { | |
2055 | printf_filtered (_("Go backward to insn number %s\n"), | |
2056 | pulongest (p->u.end.insn_num)); | |
88d1aa9d | 2057 | record_full_goto_insn (p, EXEC_REVERSE); |
d02ed0bb MM |
2058 | } |
2059 | ||
2060 | registers_changed (); | |
2061 | reinit_frame_cache (); | |
2062 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); | |
2063 | } | |
2064 | ||
2065 | /* The "to_goto_record_begin" target method. */ | |
2066 | ||
2067 | static void | |
88d1aa9d | 2068 | record_full_goto_begin (void) |
d02ed0bb | 2069 | { |
88d1aa9d | 2070 | struct record_full_entry *p = NULL; |
d02ed0bb | 2071 | |
88d1aa9d MM |
2072 | for (p = &record_full_first; p != NULL; p = p->next) |
2073 | if (p->type == record_full_end) | |
d02ed0bb MM |
2074 | break; |
2075 | ||
88d1aa9d | 2076 | record_full_goto_entry (p); |
d02ed0bb MM |
2077 | } |
2078 | ||
2079 | /* The "to_goto_record_end" target method. */ | |
2080 | ||
2081 | static void | |
88d1aa9d | 2082 | record_full_goto_end (void) |
d02ed0bb | 2083 | { |
88d1aa9d | 2084 | struct record_full_entry *p = NULL; |
d02ed0bb | 2085 | |
88d1aa9d | 2086 | for (p = record_full_list; p->next != NULL; p = p->next) |
d02ed0bb MM |
2087 | ; |
2088 | for (; p!= NULL; p = p->prev) | |
88d1aa9d | 2089 | if (p->type == record_full_end) |
d02ed0bb MM |
2090 | break; |
2091 | ||
88d1aa9d | 2092 | record_full_goto_entry (p); |
d02ed0bb MM |
2093 | } |
2094 | ||
2095 | /* The "to_goto_record" target method. */ | |
2096 | ||
2097 | static void | |
88d1aa9d | 2098 | record_full_goto (ULONGEST target_insn) |
d02ed0bb | 2099 | { |
88d1aa9d | 2100 | struct record_full_entry *p = NULL; |
d02ed0bb | 2101 | |
88d1aa9d MM |
2102 | for (p = &record_full_first; p != NULL; p = p->next) |
2103 | if (p->type == record_full_end && p->u.end.insn_num == target_insn) | |
d02ed0bb MM |
2104 | break; |
2105 | ||
88d1aa9d | 2106 | record_full_goto_entry (p); |
d02ed0bb MM |
2107 | } |
2108 | ||
2109 | static void | |
88d1aa9d | 2110 | init_record_full_ops (void) |
d02ed0bb | 2111 | { |
88d1aa9d MM |
2112 | record_full_ops.to_shortname = "record-full"; |
2113 | record_full_ops.to_longname = "Process record and replay target"; | |
2114 | record_full_ops.to_doc = | |
d02ed0bb | 2115 | "Log program while executing and replay execution from log."; |
88d1aa9d MM |
2116 | record_full_ops.to_open = record_full_open; |
2117 | record_full_ops.to_close = record_full_close; | |
2118 | record_full_ops.to_resume = record_full_resume; | |
2119 | record_full_ops.to_wait = record_full_wait; | |
2120 | record_full_ops.to_disconnect = record_full_disconnect; | |
2121 | record_full_ops.to_detach = record_full_detach; | |
2122 | record_full_ops.to_mourn_inferior = record_full_mourn_inferior; | |
2123 | record_full_ops.to_kill = record_full_kill; | |
2124 | record_full_ops.to_create_inferior = find_default_create_inferior; | |
2125 | record_full_ops.to_store_registers = record_full_store_registers; | |
2126 | record_full_ops.to_xfer_partial = record_full_xfer_partial; | |
2127 | record_full_ops.to_insert_breakpoint = record_full_insert_breakpoint; | |
2128 | record_full_ops.to_remove_breakpoint = record_full_remove_breakpoint; | |
2129 | record_full_ops.to_stopped_by_watchpoint = record_full_stopped_by_watchpoint; | |
2130 | record_full_ops.to_stopped_data_address = record_full_stopped_data_address; | |
2131 | record_full_ops.to_can_execute_reverse = record_full_can_execute_reverse; | |
2132 | record_full_ops.to_stratum = record_stratum; | |
d02ed0bb | 2133 | /* Add bookmark target methods. */ |
88d1aa9d MM |
2134 | record_full_ops.to_get_bookmark = record_full_get_bookmark; |
2135 | record_full_ops.to_goto_bookmark = record_full_goto_bookmark; | |
2136 | record_full_ops.to_async = record_full_async; | |
2137 | record_full_ops.to_can_async_p = record_full_can_async_p; | |
2138 | record_full_ops.to_is_async_p = record_full_is_async_p; | |
2139 | record_full_ops.to_execution_direction = record_full_execution_direction; | |
2140 | record_full_ops.to_info_record = record_full_info; | |
2141 | record_full_ops.to_save_record = record_full_save; | |
2142 | record_full_ops.to_delete_record = record_full_delete; | |
2143 | record_full_ops.to_record_is_replaying = record_full_is_replaying; | |
2144 | record_full_ops.to_goto_record_begin = record_full_goto_begin; | |
2145 | record_full_ops.to_goto_record_end = record_full_goto_end; | |
2146 | record_full_ops.to_goto_record = record_full_goto; | |
2147 | record_full_ops.to_magic = OPS_MAGIC; | |
d02ed0bb MM |
2148 | } |
2149 | ||
2150 | /* "to_resume" method for prec over corefile. */ | |
2151 | ||
2152 | static void | |
88d1aa9d MM |
2153 | record_full_core_resume (struct target_ops *ops, ptid_t ptid, int step, |
2154 | enum gdb_signal signal) | |
d02ed0bb | 2155 | { |
88d1aa9d MM |
2156 | record_full_resume_step = step; |
2157 | record_full_resumed = 1; | |
2158 | record_full_execution_dir = execution_direction; | |
d02ed0bb MM |
2159 | |
2160 | /* We are about to start executing the inferior (or simulate it), | |
2161 | let's register it with the event loop. */ | |
2162 | if (target_can_async_p ()) | |
2163 | { | |
2164 | target_async (inferior_event_handler, 0); | |
2165 | ||
2166 | /* Notify the event loop there's an event to wait for. */ | |
88d1aa9d | 2167 | mark_async_event_handler (record_full_async_inferior_event_token); |
d02ed0bb MM |
2168 | } |
2169 | } | |
2170 | ||
2171 | /* "to_kill" method for prec over corefile. */ | |
2172 | ||
2173 | static void | |
88d1aa9d | 2174 | record_full_core_kill (struct target_ops *ops) |
d02ed0bb MM |
2175 | { |
2176 | if (record_debug) | |
88d1aa9d | 2177 | fprintf_unfiltered (gdb_stdlog, "Process record: record_full_core_kill\n"); |
d02ed0bb | 2178 | |
88d1aa9d | 2179 | unpush_target (&record_full_core_ops); |
d02ed0bb MM |
2180 | } |
2181 | ||
2182 | /* "to_fetch_registers" method for prec over corefile. */ | |
2183 | ||
2184 | static void | |
88d1aa9d MM |
2185 | record_full_core_fetch_registers (struct target_ops *ops, |
2186 | struct regcache *regcache, | |
2187 | int regno) | |
d02ed0bb MM |
2188 | { |
2189 | if (regno < 0) | |
2190 | { | |
2191 | int num = gdbarch_num_regs (get_regcache_arch (regcache)); | |
2192 | int i; | |
2193 | ||
2194 | for (i = 0; i < num; i ++) | |
2195 | regcache_raw_supply (regcache, i, | |
88d1aa9d | 2196 | record_full_core_regbuf + MAX_REGISTER_SIZE * i); |
d02ed0bb MM |
2197 | } |
2198 | else | |
2199 | regcache_raw_supply (regcache, regno, | |
88d1aa9d | 2200 | record_full_core_regbuf + MAX_REGISTER_SIZE * regno); |
d02ed0bb MM |
2201 | } |
2202 | ||
2203 | /* "to_prepare_to_store" method for prec over corefile. */ | |
2204 | ||
2205 | static void | |
88d1aa9d | 2206 | record_full_core_prepare_to_store (struct regcache *regcache) |
d02ed0bb MM |
2207 | { |
2208 | } | |
2209 | ||
2210 | /* "to_store_registers" method for prec over corefile. */ | |
2211 | ||
2212 | static void | |
88d1aa9d | 2213 | record_full_core_store_registers (struct target_ops *ops, |
d02ed0bb MM |
2214 | struct regcache *regcache, |
2215 | int regno) | |
2216 | { | |
88d1aa9d | 2217 | if (record_full_gdb_operation_disable) |
d02ed0bb | 2218 | regcache_raw_collect (regcache, regno, |
88d1aa9d | 2219 | record_full_core_regbuf + MAX_REGISTER_SIZE * regno); |
d02ed0bb MM |
2220 | else |
2221 | error (_("You can't do that without a process to debug.")); | |
2222 | } | |
2223 | ||
2224 | /* "to_xfer_partial" method for prec over corefile. */ | |
2225 | ||
2226 | static LONGEST | |
88d1aa9d MM |
2227 | record_full_core_xfer_partial (struct target_ops *ops, |
2228 | enum target_object object, | |
2229 | const char *annex, gdb_byte *readbuf, | |
2230 | const gdb_byte *writebuf, ULONGEST offset, | |
2231 | LONGEST len) | |
d02ed0bb MM |
2232 | { |
2233 | if (object == TARGET_OBJECT_MEMORY) | |
2234 | { | |
88d1aa9d | 2235 | if (record_full_gdb_operation_disable || !writebuf) |
d02ed0bb MM |
2236 | { |
2237 | struct target_section *p; | |
2238 | ||
88d1aa9d | 2239 | for (p = record_full_core_start; p < record_full_core_end; p++) |
d02ed0bb MM |
2240 | { |
2241 | if (offset >= p->addr) | |
2242 | { | |
88d1aa9d | 2243 | struct record_full_core_buf_entry *entry; |
d02ed0bb MM |
2244 | ULONGEST sec_offset; |
2245 | ||
2246 | if (offset >= p->endaddr) | |
2247 | continue; | |
2248 | ||
2249 | if (offset + len > p->endaddr) | |
2250 | len = p->endaddr - offset; | |
2251 | ||
2252 | sec_offset = offset - p->addr; | |
2253 | ||
2254 | /* Read readbuf or write writebuf p, offset, len. */ | |
2255 | /* Check flags. */ | |
2256 | if (p->the_bfd_section->flags & SEC_CONSTRUCTOR | |
2257 | || (p->the_bfd_section->flags & SEC_HAS_CONTENTS) == 0) | |
2258 | { | |
2259 | if (readbuf) | |
2260 | memset (readbuf, 0, len); | |
2261 | return len; | |
2262 | } | |
88d1aa9d MM |
2263 | /* Get record_full_core_buf_entry. */ |
2264 | for (entry = record_full_core_buf_list; entry; | |
d02ed0bb MM |
2265 | entry = entry->prev) |
2266 | if (entry->p == p) | |
2267 | break; | |
2268 | if (writebuf) | |
2269 | { | |
2270 | if (!entry) | |
2271 | { | |
2272 | /* Add a new entry. */ | |
88d1aa9d MM |
2273 | entry = (struct record_full_core_buf_entry *) |
2274 | xmalloc | |
2275 | (sizeof (struct record_full_core_buf_entry)); | |
d02ed0bb MM |
2276 | entry->p = p; |
2277 | if (!bfd_malloc_and_get_section (p->bfd, | |
2278 | p->the_bfd_section, | |
2279 | &entry->buf)) | |
2280 | { | |
2281 | xfree (entry); | |
2282 | return 0; | |
2283 | } | |
88d1aa9d MM |
2284 | entry->prev = record_full_core_buf_list; |
2285 | record_full_core_buf_list = entry; | |
d02ed0bb MM |
2286 | } |
2287 | ||
2288 | memcpy (entry->buf + sec_offset, writebuf, | |
2289 | (size_t) len); | |
2290 | } | |
2291 | else | |
2292 | { | |
2293 | if (!entry) | |
88d1aa9d MM |
2294 | return record_full_beneath_to_xfer_partial |
2295 | (record_full_beneath_to_xfer_partial_ops, | |
d02ed0bb MM |
2296 | object, annex, readbuf, writebuf, |
2297 | offset, len); | |
2298 | ||
2299 | memcpy (readbuf, entry->buf + sec_offset, | |
2300 | (size_t) len); | |
2301 | } | |
2302 | ||
2303 | return len; | |
2304 | } | |
2305 | } | |
2306 | ||
2307 | return -1; | |
2308 | } | |
2309 | else | |
2310 | error (_("You can't do that without a process to debug.")); | |
2311 | } | |
2312 | ||
88d1aa9d MM |
2313 | return record_full_beneath_to_xfer_partial |
2314 | (record_full_beneath_to_xfer_partial_ops, object, annex, | |
2315 | readbuf, writebuf, offset, len); | |
d02ed0bb MM |
2316 | } |
2317 | ||
2318 | /* "to_insert_breakpoint" method for prec over corefile. */ | |
2319 | ||
2320 | static int | |
88d1aa9d MM |
2321 | record_full_core_insert_breakpoint (struct gdbarch *gdbarch, |
2322 | struct bp_target_info *bp_tgt) | |
d02ed0bb MM |
2323 | { |
2324 | return 0; | |
2325 | } | |
2326 | ||
2327 | /* "to_remove_breakpoint" method for prec over corefile. */ | |
2328 | ||
2329 | static int | |
88d1aa9d MM |
2330 | record_full_core_remove_breakpoint (struct gdbarch *gdbarch, |
2331 | struct bp_target_info *bp_tgt) | |
d02ed0bb MM |
2332 | { |
2333 | return 0; | |
2334 | } | |
2335 | ||
2336 | /* "to_has_execution" method for prec over corefile. */ | |
2337 | ||
2338 | static int | |
88d1aa9d | 2339 | record_full_core_has_execution (struct target_ops *ops, ptid_t the_ptid) |
d02ed0bb MM |
2340 | { |
2341 | return 1; | |
2342 | } | |
2343 | ||
2344 | static void | |
88d1aa9d | 2345 | init_record_full_core_ops (void) |
d02ed0bb | 2346 | { |
88d1aa9d MM |
2347 | record_full_core_ops.to_shortname = "record-core"; |
2348 | record_full_core_ops.to_longname = "Process record and replay target"; | |
2349 | record_full_core_ops.to_doc = | |
d02ed0bb | 2350 | "Log program while executing and replay execution from log."; |
88d1aa9d MM |
2351 | record_full_core_ops.to_open = record_full_open; |
2352 | record_full_core_ops.to_close = record_full_close; | |
2353 | record_full_core_ops.to_resume = record_full_core_resume; | |
2354 | record_full_core_ops.to_wait = record_full_wait; | |
2355 | record_full_core_ops.to_kill = record_full_core_kill; | |
2356 | record_full_core_ops.to_fetch_registers = record_full_core_fetch_registers; | |
2357 | record_full_core_ops.to_prepare_to_store = record_full_core_prepare_to_store; | |
2358 | record_full_core_ops.to_store_registers = record_full_core_store_registers; | |
2359 | record_full_core_ops.to_xfer_partial = record_full_core_xfer_partial; | |
2360 | record_full_core_ops.to_insert_breakpoint | |
2361 | = record_full_core_insert_breakpoint; | |
2362 | record_full_core_ops.to_remove_breakpoint | |
2363 | = record_full_core_remove_breakpoint; | |
2364 | record_full_core_ops.to_stopped_by_watchpoint | |
2365 | = record_full_stopped_by_watchpoint; | |
2366 | record_full_core_ops.to_stopped_data_address | |
2367 | = record_full_stopped_data_address; | |
2368 | record_full_core_ops.to_can_execute_reverse | |
2369 | = record_full_can_execute_reverse; | |
2370 | record_full_core_ops.to_has_execution = record_full_core_has_execution; | |
2371 | record_full_core_ops.to_stratum = record_stratum; | |
d02ed0bb | 2372 | /* Add bookmark target methods. */ |
88d1aa9d MM |
2373 | record_full_core_ops.to_get_bookmark = record_full_get_bookmark; |
2374 | record_full_core_ops.to_goto_bookmark = record_full_goto_bookmark; | |
2375 | record_full_core_ops.to_async = record_full_async; | |
2376 | record_full_core_ops.to_can_async_p = record_full_can_async_p; | |
2377 | record_full_core_ops.to_is_async_p = record_full_is_async_p; | |
2378 | record_full_core_ops.to_execution_direction | |
2379 | = record_full_execution_direction; | |
2380 | record_full_core_ops.to_info_record = record_full_info; | |
2381 | record_full_core_ops.to_delete_record = record_full_delete; | |
2382 | record_full_core_ops.to_record_is_replaying = record_full_is_replaying; | |
2383 | record_full_core_ops.to_goto_record_begin = record_full_goto_begin; | |
2384 | record_full_core_ops.to_goto_record_end = record_full_goto_end; | |
2385 | record_full_core_ops.to_goto_record = record_full_goto; | |
2386 | record_full_core_ops.to_magic = OPS_MAGIC; | |
d02ed0bb MM |
2387 | } |
2388 | ||
2389 | /* Record log save-file format | |
2390 | Version 1 (never released) | |
2391 | ||
2392 | Header: | |
2393 | 4 bytes: magic number htonl(0x20090829). | |
2394 | NOTE: be sure to change whenever this file format changes! | |
2395 | ||
2396 | Records: | |
88d1aa9d MM |
2397 | record_full_end: |
2398 | 1 byte: record type (record_full_end, see enum record_full_type). | |
2399 | record_full_reg: | |
2400 | 1 byte: record type (record_full_reg, see enum record_full_type). | |
d02ed0bb MM |
2401 | 8 bytes: register id (network byte order). |
2402 | MAX_REGISTER_SIZE bytes: register value. | |
88d1aa9d MM |
2403 | record_full_mem: |
2404 | 1 byte: record type (record_full_mem, see enum record_full_type). | |
d02ed0bb MM |
2405 | 8 bytes: memory length (network byte order). |
2406 | 8 bytes: memory address (network byte order). | |
2407 | n bytes: memory value (n == memory length). | |
2408 | ||
2409 | Version 2 | |
2410 | 4 bytes: magic number netorder32(0x20091016). | |
2411 | NOTE: be sure to change whenever this file format changes! | |
2412 | ||
2413 | Records: | |
88d1aa9d MM |
2414 | record_full_end: |
2415 | 1 byte: record type (record_full_end, see enum record_full_type). | |
d02ed0bb MM |
2416 | 4 bytes: signal |
2417 | 4 bytes: instruction count | |
88d1aa9d MM |
2418 | record_full_reg: |
2419 | 1 byte: record type (record_full_reg, see enum record_full_type). | |
d02ed0bb MM |
2420 | 4 bytes: register id (network byte order). |
2421 | n bytes: register value (n == actual register size). | |
2422 | (eg. 4 bytes for x86 general registers). | |
88d1aa9d MM |
2423 | record_full_mem: |
2424 | 1 byte: record type (record_full_mem, see enum record_full_type). | |
d02ed0bb MM |
2425 | 4 bytes: memory length (network byte order). |
2426 | 8 bytes: memory address (network byte order). | |
2427 | n bytes: memory value (n == memory length). | |
2428 | ||
2429 | */ | |
2430 | ||
2431 | /* bfdcore_read -- read bytes from a core file section. */ | |
2432 | ||
2433 | static inline void | |
2434 | bfdcore_read (bfd *obfd, asection *osec, void *buf, int len, int *offset) | |
2435 | { | |
2436 | int ret = bfd_get_section_contents (obfd, osec, buf, *offset, len); | |
2437 | ||
2438 | if (ret) | |
2439 | *offset += len; | |
2440 | else | |
2441 | error (_("Failed to read %d bytes from core file %s ('%s')."), | |
2442 | len, bfd_get_filename (obfd), | |
2443 | bfd_errmsg (bfd_get_error ())); | |
2444 | } | |
2445 | ||
2446 | static inline uint64_t | |
2447 | netorder64 (uint64_t input) | |
2448 | { | |
2449 | uint64_t ret; | |
2450 | ||
2451 | store_unsigned_integer ((gdb_byte *) &ret, sizeof (ret), | |
2452 | BFD_ENDIAN_BIG, input); | |
2453 | return ret; | |
2454 | } | |
2455 | ||
2456 | static inline uint32_t | |
2457 | netorder32 (uint32_t input) | |
2458 | { | |
2459 | uint32_t ret; | |
2460 | ||
2461 | store_unsigned_integer ((gdb_byte *) &ret, sizeof (ret), | |
2462 | BFD_ENDIAN_BIG, input); | |
2463 | return ret; | |
2464 | } | |
2465 | ||
2466 | static inline uint16_t | |
2467 | netorder16 (uint16_t input) | |
2468 | { | |
2469 | uint16_t ret; | |
2470 | ||
2471 | store_unsigned_integer ((gdb_byte *) &ret, sizeof (ret), | |
2472 | BFD_ENDIAN_BIG, input); | |
2473 | return ret; | |
2474 | } | |
2475 | ||
2476 | /* Restore the execution log from a core_bfd file. */ | |
2477 | static void | |
88d1aa9d | 2478 | record_full_restore (void) |
d02ed0bb MM |
2479 | { |
2480 | uint32_t magic; | |
2481 | struct cleanup *old_cleanups; | |
88d1aa9d | 2482 | struct record_full_entry *rec; |
d02ed0bb MM |
2483 | asection *osec; |
2484 | uint32_t osec_size; | |
2485 | int bfd_offset = 0; | |
2486 | struct regcache *regcache; | |
2487 | ||
2488 | /* We restore the execution log from the open core bfd, | |
2489 | if there is one. */ | |
2490 | if (core_bfd == NULL) | |
2491 | return; | |
2492 | ||
88d1aa9d MM |
2493 | /* "record_full_restore" can only be called when record list is empty. */ |
2494 | gdb_assert (record_full_first.next == NULL); | |
d02ed0bb MM |
2495 | |
2496 | if (record_debug) | |
2497 | fprintf_unfiltered (gdb_stdlog, "Restoring recording from core file.\n"); | |
2498 | ||
2499 | /* Now need to find our special note section. */ | |
2500 | osec = bfd_get_section_by_name (core_bfd, "null0"); | |
2501 | if (record_debug) | |
2502 | fprintf_unfiltered (gdb_stdlog, "Find precord section %s.\n", | |
2503 | osec ? "succeeded" : "failed"); | |
2504 | if (osec == NULL) | |
2505 | return; | |
2506 | osec_size = bfd_section_size (core_bfd, osec); | |
2507 | if (record_debug) | |
2508 | fprintf_unfiltered (gdb_stdlog, "%s", bfd_section_name (core_bfd, osec)); | |
2509 | ||
2510 | /* Check the magic code. */ | |
2511 | bfdcore_read (core_bfd, osec, &magic, sizeof (magic), &bfd_offset); | |
88d1aa9d | 2512 | if (magic != RECORD_FULL_FILE_MAGIC) |
d02ed0bb MM |
2513 | error (_("Version mis-match or file format error in core file %s."), |
2514 | bfd_get_filename (core_bfd)); | |
2515 | if (record_debug) | |
2516 | fprintf_unfiltered (gdb_stdlog, | |
2517 | " Reading 4-byte magic cookie " | |
88d1aa9d | 2518 | "RECORD_FULL_FILE_MAGIC (0x%s)\n", |
d02ed0bb MM |
2519 | phex_nz (netorder32 (magic), 4)); |
2520 | ||
88d1aa9d MM |
2521 | /* Restore the entries in recfd into record_full_arch_list_head and |
2522 | record_full_arch_list_tail. */ | |
2523 | record_full_arch_list_head = NULL; | |
2524 | record_full_arch_list_tail = NULL; | |
2525 | record_full_insn_num = 0; | |
2526 | old_cleanups = make_cleanup (record_full_arch_list_cleanups, 0); | |
d02ed0bb MM |
2527 | regcache = get_current_regcache (); |
2528 | ||
2529 | while (1) | |
2530 | { | |
2531 | uint8_t rectype; | |
2532 | uint32_t regnum, len, signal, count; | |
2533 | uint64_t addr; | |
2534 | ||
2535 | /* We are finished when offset reaches osec_size. */ | |
2536 | if (bfd_offset >= osec_size) | |
2537 | break; | |
2538 | bfdcore_read (core_bfd, osec, &rectype, sizeof (rectype), &bfd_offset); | |
2539 | ||
2540 | switch (rectype) | |
2541 | { | |
88d1aa9d | 2542 | case record_full_reg: /* reg */ |
d02ed0bb MM |
2543 | /* Get register number to regnum. */ |
2544 | bfdcore_read (core_bfd, osec, ®num, | |
2545 | sizeof (regnum), &bfd_offset); | |
2546 | regnum = netorder32 (regnum); | |
2547 | ||
88d1aa9d | 2548 | rec = record_full_reg_alloc (regcache, regnum); |
d02ed0bb MM |
2549 | |
2550 | /* Get val. */ | |
88d1aa9d | 2551 | bfdcore_read (core_bfd, osec, record_full_get_loc (rec), |
d02ed0bb MM |
2552 | rec->u.reg.len, &bfd_offset); |
2553 | ||
2554 | if (record_debug) | |
2555 | fprintf_unfiltered (gdb_stdlog, | |
2556 | " Reading register %d (1 " | |
2557 | "plus %lu plus %d bytes)\n", | |
2558 | rec->u.reg.num, | |
2559 | (unsigned long) sizeof (regnum), | |
2560 | rec->u.reg.len); | |
2561 | break; | |
2562 | ||
88d1aa9d | 2563 | case record_full_mem: /* mem */ |
d02ed0bb MM |
2564 | /* Get len. */ |
2565 | bfdcore_read (core_bfd, osec, &len, | |
2566 | sizeof (len), &bfd_offset); | |
2567 | len = netorder32 (len); | |
2568 | ||
2569 | /* Get addr. */ | |
2570 | bfdcore_read (core_bfd, osec, &addr, | |
2571 | sizeof (addr), &bfd_offset); | |
2572 | addr = netorder64 (addr); | |
2573 | ||
88d1aa9d | 2574 | rec = record_full_mem_alloc (addr, len); |
d02ed0bb MM |
2575 | |
2576 | /* Get val. */ | |
88d1aa9d | 2577 | bfdcore_read (core_bfd, osec, record_full_get_loc (rec), |
d02ed0bb MM |
2578 | rec->u.mem.len, &bfd_offset); |
2579 | ||
2580 | if (record_debug) | |
2581 | fprintf_unfiltered (gdb_stdlog, | |
2582 | " Reading memory %s (1 plus " | |
2583 | "%lu plus %lu plus %d bytes)\n", | |
2584 | paddress (get_current_arch (), | |
2585 | rec->u.mem.addr), | |
2586 | (unsigned long) sizeof (addr), | |
2587 | (unsigned long) sizeof (len), | |
2588 | rec->u.mem.len); | |
2589 | break; | |
2590 | ||
88d1aa9d MM |
2591 | case record_full_end: /* end */ |
2592 | rec = record_full_end_alloc (); | |
2593 | record_full_insn_num ++; | |
d02ed0bb MM |
2594 | |
2595 | /* Get signal value. */ | |
2596 | bfdcore_read (core_bfd, osec, &signal, | |
2597 | sizeof (signal), &bfd_offset); | |
2598 | signal = netorder32 (signal); | |
2599 | rec->u.end.sigval = signal; | |
2600 | ||
2601 | /* Get insn count. */ | |
2602 | bfdcore_read (core_bfd, osec, &count, | |
2603 | sizeof (count), &bfd_offset); | |
2604 | count = netorder32 (count); | |
2605 | rec->u.end.insn_num = count; | |
88d1aa9d | 2606 | record_full_insn_count = count + 1; |
d02ed0bb MM |
2607 | if (record_debug) |
2608 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 2609 | " Reading record_full_end (1 + " |
d02ed0bb MM |
2610 | "%lu + %lu bytes), offset == %s\n", |
2611 | (unsigned long) sizeof (signal), | |
2612 | (unsigned long) sizeof (count), | |
2613 | paddress (get_current_arch (), | |
2614 | bfd_offset)); | |
2615 | break; | |
2616 | ||
2617 | default: | |
2618 | error (_("Bad entry type in core file %s."), | |
2619 | bfd_get_filename (core_bfd)); | |
2620 | break; | |
2621 | } | |
2622 | ||
2623 | /* Add rec to record arch list. */ | |
88d1aa9d | 2624 | record_full_arch_list_add (rec); |
d02ed0bb MM |
2625 | } |
2626 | ||
2627 | discard_cleanups (old_cleanups); | |
2628 | ||
88d1aa9d MM |
2629 | /* Add record_full_arch_list_head to the end of record list. */ |
2630 | record_full_first.next = record_full_arch_list_head; | |
2631 | record_full_arch_list_head->prev = &record_full_first; | |
2632 | record_full_arch_list_tail->next = NULL; | |
2633 | record_full_list = &record_full_first; | |
d02ed0bb | 2634 | |
88d1aa9d MM |
2635 | /* Update record_full_insn_max_num. */ |
2636 | if (record_full_insn_num > record_full_insn_max_num) | |
d02ed0bb | 2637 | { |
88d1aa9d | 2638 | record_full_insn_max_num = record_full_insn_num; |
d02ed0bb | 2639 | warning (_("Auto increase record/replay buffer limit to %d."), |
88d1aa9d | 2640 | record_full_insn_max_num); |
d02ed0bb MM |
2641 | } |
2642 | ||
2643 | /* Succeeded. */ | |
2644 | printf_filtered (_("Restored records from core file %s.\n"), | |
2645 | bfd_get_filename (core_bfd)); | |
2646 | ||
2647 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); | |
2648 | } | |
2649 | ||
2650 | /* bfdcore_write -- write bytes into a core file section. */ | |
2651 | ||
2652 | static inline void | |
2653 | bfdcore_write (bfd *obfd, asection *osec, void *buf, int len, int *offset) | |
2654 | { | |
2655 | int ret = bfd_set_section_contents (obfd, osec, buf, *offset, len); | |
2656 | ||
2657 | if (ret) | |
2658 | *offset += len; | |
2659 | else | |
2660 | error (_("Failed to write %d bytes to core file %s ('%s')."), | |
2661 | len, bfd_get_filename (obfd), | |
2662 | bfd_errmsg (bfd_get_error ())); | |
2663 | } | |
2664 | ||
2665 | /* Restore the execution log from a file. We use a modified elf | |
2666 | corefile format, with an extra section for our data. */ | |
2667 | ||
2668 | static void | |
88d1aa9d | 2669 | cmd_record_full_restore (char *args, int from_tty) |
d02ed0bb MM |
2670 | { |
2671 | core_file_command (args, from_tty); | |
88d1aa9d | 2672 | record_full_open (args, from_tty); |
d02ed0bb MM |
2673 | } |
2674 | ||
2675 | static void | |
88d1aa9d | 2676 | record_full_save_cleanups (void *data) |
d02ed0bb MM |
2677 | { |
2678 | bfd *obfd = data; | |
2679 | char *pathname = xstrdup (bfd_get_filename (obfd)); | |
2680 | ||
2681 | gdb_bfd_unref (obfd); | |
2682 | unlink (pathname); | |
2683 | xfree (pathname); | |
2684 | } | |
2685 | ||
2686 | /* Save the execution log to a file. We use a modified elf corefile | |
2687 | format, with an extra section for our data. */ | |
2688 | ||
2689 | static void | |
88d1aa9d | 2690 | record_full_save (char *recfilename) |
d02ed0bb | 2691 | { |
88d1aa9d | 2692 | struct record_full_entry *cur_record_full_list; |
d02ed0bb MM |
2693 | uint32_t magic; |
2694 | struct regcache *regcache; | |
2695 | struct gdbarch *gdbarch; | |
2696 | struct cleanup *old_cleanups; | |
2697 | struct cleanup *set_cleanups; | |
2698 | bfd *obfd; | |
2699 | int save_size = 0; | |
2700 | asection *osec = NULL; | |
2701 | int bfd_offset = 0; | |
2702 | ||
2703 | /* Open the save file. */ | |
2704 | if (record_debug) | |
2705 | fprintf_unfiltered (gdb_stdlog, "Saving execution log to core file '%s'\n", | |
2706 | recfilename); | |
2707 | ||
2708 | /* Open the output file. */ | |
2709 | obfd = create_gcore_bfd (recfilename); | |
88d1aa9d | 2710 | old_cleanups = make_cleanup (record_full_save_cleanups, obfd); |
d02ed0bb | 2711 | |
88d1aa9d MM |
2712 | /* Save the current record entry to "cur_record_full_list". */ |
2713 | cur_record_full_list = record_full_list; | |
d02ed0bb MM |
2714 | |
2715 | /* Get the values of regcache and gdbarch. */ | |
2716 | regcache = get_current_regcache (); | |
2717 | gdbarch = get_regcache_arch (regcache); | |
2718 | ||
2719 | /* Disable the GDB operation record. */ | |
25ea693b | 2720 | set_cleanups = record_full_gdb_operation_disable_set (); |
d02ed0bb MM |
2721 | |
2722 | /* Reverse execute to the begin of record list. */ | |
2723 | while (1) | |
2724 | { | |
2725 | /* Check for beginning and end of log. */ | |
88d1aa9d | 2726 | if (record_full_list == &record_full_first) |
d02ed0bb MM |
2727 | break; |
2728 | ||
88d1aa9d | 2729 | record_full_exec_insn (regcache, gdbarch, record_full_list); |
d02ed0bb | 2730 | |
88d1aa9d MM |
2731 | if (record_full_list->prev) |
2732 | record_full_list = record_full_list->prev; | |
d02ed0bb MM |
2733 | } |
2734 | ||
2735 | /* Compute the size needed for the extra bfd section. */ | |
2736 | save_size = 4; /* magic cookie */ | |
88d1aa9d MM |
2737 | for (record_full_list = record_full_first.next; record_full_list; |
2738 | record_full_list = record_full_list->next) | |
2739 | switch (record_full_list->type) | |
d02ed0bb | 2740 | { |
88d1aa9d | 2741 | case record_full_end: |
d02ed0bb MM |
2742 | save_size += 1 + 4 + 4; |
2743 | break; | |
88d1aa9d MM |
2744 | case record_full_reg: |
2745 | save_size += 1 + 4 + record_full_list->u.reg.len; | |
d02ed0bb | 2746 | break; |
88d1aa9d MM |
2747 | case record_full_mem: |
2748 | save_size += 1 + 4 + 8 + record_full_list->u.mem.len; | |
d02ed0bb MM |
2749 | break; |
2750 | } | |
2751 | ||
2752 | /* Make the new bfd section. */ | |
2753 | osec = bfd_make_section_anyway_with_flags (obfd, "precord", | |
2754 | SEC_HAS_CONTENTS | |
2755 | | SEC_READONLY); | |
2756 | if (osec == NULL) | |
2757 | error (_("Failed to create 'precord' section for corefile %s: %s"), | |
2758 | recfilename, | |
2759 | bfd_errmsg (bfd_get_error ())); | |
2760 | bfd_set_section_size (obfd, osec, save_size); | |
2761 | bfd_set_section_vma (obfd, osec, 0); | |
2762 | bfd_set_section_alignment (obfd, osec, 0); | |
2763 | bfd_section_lma (obfd, osec) = 0; | |
2764 | ||
2765 | /* Save corefile state. */ | |
2766 | write_gcore_file (obfd); | |
2767 | ||
2768 | /* Write out the record log. */ | |
2769 | /* Write the magic code. */ | |
88d1aa9d | 2770 | magic = RECORD_FULL_FILE_MAGIC; |
d02ed0bb MM |
2771 | if (record_debug) |
2772 | fprintf_unfiltered (gdb_stdlog, | |
2773 | " Writing 4-byte magic cookie " | |
88d1aa9d | 2774 | "RECORD_FULL_FILE_MAGIC (0x%s)\n", |
d02ed0bb MM |
2775 | phex_nz (magic, 4)); |
2776 | bfdcore_write (obfd, osec, &magic, sizeof (magic), &bfd_offset); | |
2777 | ||
2778 | /* Save the entries to recfd and forward execute to the end of | |
2779 | record list. */ | |
88d1aa9d | 2780 | record_full_list = &record_full_first; |
d02ed0bb MM |
2781 | while (1) |
2782 | { | |
2783 | /* Save entry. */ | |
88d1aa9d | 2784 | if (record_full_list != &record_full_first) |
d02ed0bb MM |
2785 | { |
2786 | uint8_t type; | |
2787 | uint32_t regnum, len, signal, count; | |
2788 | uint64_t addr; | |
2789 | ||
88d1aa9d | 2790 | type = record_full_list->type; |
d02ed0bb MM |
2791 | bfdcore_write (obfd, osec, &type, sizeof (type), &bfd_offset); |
2792 | ||
88d1aa9d | 2793 | switch (record_full_list->type) |
d02ed0bb | 2794 | { |
88d1aa9d | 2795 | case record_full_reg: /* reg */ |
d02ed0bb MM |
2796 | if (record_debug) |
2797 | fprintf_unfiltered (gdb_stdlog, | |
2798 | " Writing register %d (1 " | |
2799 | "plus %lu plus %d bytes)\n", | |
88d1aa9d | 2800 | record_full_list->u.reg.num, |
d02ed0bb | 2801 | (unsigned long) sizeof (regnum), |
88d1aa9d | 2802 | record_full_list->u.reg.len); |
d02ed0bb MM |
2803 | |
2804 | /* Write regnum. */ | |
88d1aa9d | 2805 | regnum = netorder32 (record_full_list->u.reg.num); |
d02ed0bb MM |
2806 | bfdcore_write (obfd, osec, ®num, |
2807 | sizeof (regnum), &bfd_offset); | |
2808 | ||
2809 | /* Write regval. */ | |
88d1aa9d MM |
2810 | bfdcore_write (obfd, osec, |
2811 | record_full_get_loc (record_full_list), | |
2812 | record_full_list->u.reg.len, &bfd_offset); | |
d02ed0bb MM |
2813 | break; |
2814 | ||
88d1aa9d | 2815 | case record_full_mem: /* mem */ |
d02ed0bb MM |
2816 | if (record_debug) |
2817 | fprintf_unfiltered (gdb_stdlog, | |
2818 | " Writing memory %s (1 plus " | |
2819 | "%lu plus %lu plus %d bytes)\n", | |
2820 | paddress (gdbarch, | |
88d1aa9d | 2821 | record_full_list->u.mem.addr), |
d02ed0bb MM |
2822 | (unsigned long) sizeof (addr), |
2823 | (unsigned long) sizeof (len), | |
88d1aa9d | 2824 | record_full_list->u.mem.len); |
d02ed0bb MM |
2825 | |
2826 | /* Write memlen. */ | |
88d1aa9d | 2827 | len = netorder32 (record_full_list->u.mem.len); |
d02ed0bb MM |
2828 | bfdcore_write (obfd, osec, &len, sizeof (len), &bfd_offset); |
2829 | ||
2830 | /* Write memaddr. */ | |
88d1aa9d | 2831 | addr = netorder64 (record_full_list->u.mem.addr); |
d02ed0bb MM |
2832 | bfdcore_write (obfd, osec, &addr, |
2833 | sizeof (addr), &bfd_offset); | |
2834 | ||
2835 | /* Write memval. */ | |
88d1aa9d MM |
2836 | bfdcore_write (obfd, osec, |
2837 | record_full_get_loc (record_full_list), | |
2838 | record_full_list->u.mem.len, &bfd_offset); | |
d02ed0bb MM |
2839 | break; |
2840 | ||
88d1aa9d | 2841 | case record_full_end: |
d02ed0bb MM |
2842 | if (record_debug) |
2843 | fprintf_unfiltered (gdb_stdlog, | |
88d1aa9d | 2844 | " Writing record_full_end (1 + " |
d02ed0bb MM |
2845 | "%lu + %lu bytes)\n", |
2846 | (unsigned long) sizeof (signal), | |
2847 | (unsigned long) sizeof (count)); | |
2848 | /* Write signal value. */ | |
88d1aa9d | 2849 | signal = netorder32 (record_full_list->u.end.sigval); |
d02ed0bb MM |
2850 | bfdcore_write (obfd, osec, &signal, |
2851 | sizeof (signal), &bfd_offset); | |
2852 | ||
2853 | /* Write insn count. */ | |
88d1aa9d | 2854 | count = netorder32 (record_full_list->u.end.insn_num); |
d02ed0bb MM |
2855 | bfdcore_write (obfd, osec, &count, |
2856 | sizeof (count), &bfd_offset); | |
2857 | break; | |
2858 | } | |
2859 | } | |
2860 | ||
2861 | /* Execute entry. */ | |
88d1aa9d | 2862 | record_full_exec_insn (regcache, gdbarch, record_full_list); |
d02ed0bb | 2863 | |
88d1aa9d MM |
2864 | if (record_full_list->next) |
2865 | record_full_list = record_full_list->next; | |
d02ed0bb MM |
2866 | else |
2867 | break; | |
2868 | } | |
2869 | ||
88d1aa9d | 2870 | /* Reverse execute to cur_record_full_list. */ |
d02ed0bb MM |
2871 | while (1) |
2872 | { | |
2873 | /* Check for beginning and end of log. */ | |
88d1aa9d | 2874 | if (record_full_list == cur_record_full_list) |
d02ed0bb MM |
2875 | break; |
2876 | ||
88d1aa9d | 2877 | record_full_exec_insn (regcache, gdbarch, record_full_list); |
d02ed0bb | 2878 | |
88d1aa9d MM |
2879 | if (record_full_list->prev) |
2880 | record_full_list = record_full_list->prev; | |
d02ed0bb MM |
2881 | } |
2882 | ||
2883 | do_cleanups (set_cleanups); | |
2884 | gdb_bfd_unref (obfd); | |
2885 | discard_cleanups (old_cleanups); | |
2886 | ||
2887 | /* Succeeded. */ | |
2888 | printf_filtered (_("Saved core file %s with execution log.\n"), | |
2889 | recfilename); | |
2890 | } | |
2891 | ||
88d1aa9d | 2892 | /* record_full_goto_insn -- rewind the record log (forward or backward, |
d02ed0bb MM |
2893 | depending on DIR) to the given entry, changing the program state |
2894 | correspondingly. */ | |
2895 | ||
2896 | static void | |
88d1aa9d MM |
2897 | record_full_goto_insn (struct record_full_entry *entry, |
2898 | enum exec_direction_kind dir) | |
d02ed0bb | 2899 | { |
25ea693b | 2900 | struct cleanup *set_cleanups = record_full_gdb_operation_disable_set (); |
d02ed0bb MM |
2901 | struct regcache *regcache = get_current_regcache (); |
2902 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
2903 | ||
2904 | /* Assume everything is valid: we will hit the entry, | |
2905 | and we will not hit the end of the recording. */ | |
2906 | ||
2907 | if (dir == EXEC_FORWARD) | |
88d1aa9d | 2908 | record_full_list = record_full_list->next; |
d02ed0bb MM |
2909 | |
2910 | do | |
2911 | { | |
88d1aa9d | 2912 | record_full_exec_insn (regcache, gdbarch, record_full_list); |
d02ed0bb | 2913 | if (dir == EXEC_REVERSE) |
88d1aa9d | 2914 | record_full_list = record_full_list->prev; |
d02ed0bb | 2915 | else |
88d1aa9d MM |
2916 | record_full_list = record_full_list->next; |
2917 | } while (record_full_list != entry); | |
d02ed0bb MM |
2918 | do_cleanups (set_cleanups); |
2919 | } | |
2920 | ||
2921 | /* Alias for "target record-full". */ | |
2922 | ||
2923 | static void | |
88d1aa9d | 2924 | cmd_record_full_start (char *args, int from_tty) |
d02ed0bb MM |
2925 | { |
2926 | execute_command ("target record-full", from_tty); | |
2927 | } | |
2928 | ||
2929 | static void | |
88d1aa9d MM |
2930 | set_record_full_insn_max_num (char *args, int from_tty, |
2931 | struct cmd_list_element *c) | |
d02ed0bb | 2932 | { |
88d1aa9d MM |
2933 | if (record_full_insn_num > record_full_insn_max_num |
2934 | && record_full_insn_max_num) | |
d02ed0bb | 2935 | { |
88d1aa9d MM |
2936 | /* Count down record_full_insn_num while releasing records from list. */ |
2937 | while (record_full_insn_num > record_full_insn_max_num) | |
d02ed0bb | 2938 | { |
88d1aa9d MM |
2939 | record_full_list_release_first (); |
2940 | record_full_insn_num--; | |
d02ed0bb MM |
2941 | } |
2942 | } | |
2943 | } | |
2944 | ||
2945 | /* The "set record full" command. */ | |
2946 | ||
2947 | static void | |
2948 | set_record_full_command (char *args, int from_tty) | |
2949 | { | |
2950 | printf_unfiltered (_("\"set record full\" must be followed " | |
2951 | "by an apporpriate subcommand.\n")); | |
2952 | help_list (set_record_full_cmdlist, "set record full ", all_commands, | |
2953 | gdb_stdout); | |
2954 | } | |
2955 | ||
2956 | /* The "show record full" command. */ | |
2957 | ||
2958 | static void | |
2959 | show_record_full_command (char *args, int from_tty) | |
2960 | { | |
2961 | cmd_show_list (show_record_full_cmdlist, from_tty, ""); | |
2962 | } | |
2963 | ||
2964 | /* Provide a prototype to silence -Wmissing-prototypes. */ | |
2965 | extern initialize_file_ftype _initialize_record_full; | |
2966 | ||
2967 | void | |
2968 | _initialize_record_full (void) | |
2969 | { | |
2970 | struct cmd_list_element *c; | |
2971 | ||
88d1aa9d MM |
2972 | /* Init record_full_first. */ |
2973 | record_full_first.prev = NULL; | |
2974 | record_full_first.next = NULL; | |
2975 | record_full_first.type = record_full_end; | |
d02ed0bb | 2976 | |
88d1aa9d MM |
2977 | init_record_full_ops (); |
2978 | add_target (&record_full_ops); | |
2979 | add_deprecated_target_alias (&record_full_ops, "record"); | |
2980 | init_record_full_core_ops (); | |
2981 | add_target (&record_full_core_ops); | |
d02ed0bb | 2982 | |
88d1aa9d | 2983 | add_prefix_cmd ("full", class_obscure, cmd_record_full_start, |
d02ed0bb MM |
2984 | _("Start full execution recording."), &record_full_cmdlist, |
2985 | "record full ", 0, &record_cmdlist); | |
2986 | ||
88d1aa9d | 2987 | c = add_cmd ("restore", class_obscure, cmd_record_full_restore, |
d02ed0bb MM |
2988 | _("Restore the execution log from a file.\n\ |
2989 | Argument is filename. File must be created with 'record save'."), | |
2990 | &record_full_cmdlist); | |
2991 | set_cmd_completer (c, filename_completer); | |
2992 | ||
2993 | /* Deprecate the old version without "full" prefix. */ | |
2994 | c = add_alias_cmd ("restore", "full restore", class_obscure, 1, | |
2995 | &record_cmdlist); | |
2996 | set_cmd_completer (c, filename_completer); | |
2997 | deprecate_cmd (c, "record full restore"); | |
2998 | ||
2999 | add_prefix_cmd ("full", class_support, set_record_full_command, | |
3000 | _("Set record options"), &set_record_full_cmdlist, | |
3001 | "set record full ", 0, &set_record_cmdlist); | |
3002 | ||
3003 | add_prefix_cmd ("full", class_support, show_record_full_command, | |
3004 | _("Show record options"), &show_record_full_cmdlist, | |
3005 | "show record full ", 0, &show_record_cmdlist); | |
3006 | ||
3007 | /* Record instructions number limit command. */ | |
3008 | add_setshow_boolean_cmd ("stop-at-limit", no_class, | |
88d1aa9d | 3009 | &record_full_stop_at_limit, _("\ |
d02ed0bb MM |
3010 | Set whether record/replay stops when record/replay buffer becomes full."), _("\ |
3011 | Show whether record/replay stops when record/replay buffer becomes full."), | |
3012 | _("Default is ON.\n\ | |
3013 | When ON, if the record/replay buffer becomes full, ask user what to do.\n\ | |
3014 | When OFF, if the record/replay buffer becomes full,\n\ | |
3015 | delete the oldest recorded instruction to make room for each new one."), | |
3016 | NULL, NULL, | |
3017 | &set_record_full_cmdlist, &show_record_full_cmdlist); | |
3018 | ||
3019 | c = add_alias_cmd ("stop-at-limit", "full stop-at-limit", no_class, 1, | |
3020 | &set_record_cmdlist); | |
3021 | deprecate_cmd (c, "set record full stop-at-limit"); | |
3022 | ||
3023 | c = add_alias_cmd ("stop-at-limit", "full stop-at-limit", no_class, 1, | |
3024 | &show_record_cmdlist); | |
3025 | deprecate_cmd (c, "show record full stop-at-limit"); | |
3026 | ||
88d1aa9d MM |
3027 | add_setshow_uinteger_cmd ("insn-number-max", no_class, |
3028 | &record_full_insn_max_num, | |
d02ed0bb MM |
3029 | _("Set record/replay buffer limit."), |
3030 | _("Show record/replay buffer limit."), _("\ | |
3031 | Set the maximum number of instructions to be stored in the\n\ | |
3032 | record/replay buffer. Zero means unlimited. Default is 200000."), | |
88d1aa9d | 3033 | set_record_full_insn_max_num, |
d02ed0bb MM |
3034 | NULL, &set_record_full_cmdlist, |
3035 | &show_record_full_cmdlist); | |
3036 | ||
3037 | c = add_alias_cmd ("insn-number-max", "full insn-number-max", no_class, 1, | |
3038 | &set_record_cmdlist); | |
3039 | deprecate_cmd (c, "set record full insn-number-max"); | |
3040 | ||
3041 | c = add_alias_cmd ("insn-number-max", "full insn-number-max", no_class, 1, | |
3042 | &show_record_cmdlist); | |
3043 | deprecate_cmd (c, "show record full insn-number-max"); | |
3044 | ||
88d1aa9d | 3045 | add_setshow_boolean_cmd ("memory-query", no_class, |
25ea693b | 3046 | &record_full_memory_query, _("\ |
d02ed0bb MM |
3047 | Set whether query if PREC cannot record memory change of next instruction."), |
3048 | _("\ | |
3049 | Show whether query if PREC cannot record memory change of next instruction."), | |
3050 | _("\ | |
3051 | Default is OFF.\n\ | |
3052 | When ON, query if PREC cannot record memory change of next instruction."), | |
3053 | NULL, NULL, | |
88d1aa9d MM |
3054 | &set_record_full_cmdlist, |
3055 | &show_record_full_cmdlist); | |
d02ed0bb MM |
3056 | |
3057 | c = add_alias_cmd ("memory-query", "full memory-query", no_class, 1, | |
3058 | &set_record_cmdlist); | |
3059 | deprecate_cmd (c, "set record full memory-query"); | |
3060 | ||
3061 | c = add_alias_cmd ("memory-query", "full memory-query", no_class, 1, | |
3062 | &show_record_cmdlist); | |
3063 | deprecate_cmd (c, "show record full memory-query"); | |
3064 | } |