Commit | Line | Data |
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7951c4eb YQ |
1 | /* Trace file TFILE format support in GDB. |
2 | ||
42a4f53d | 3 | Copyright (C) 1997-2019 Free Software Foundation, Inc. |
7951c4eb YQ |
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 "tracefile.h" | |
22 | #include "readline/tilde.h" | |
0747795c TT |
23 | #include "common/filestuff.h" |
24 | #include "common/rsp-low.h" /* bin2hex */ | |
11395323 YQ |
25 | #include "regcache.h" |
26 | #include "inferior.h" | |
27 | #include "gdbthread.h" | |
28 | #include "exec.h" /* exec_bfd */ | |
29 | #include "completer.h" | |
30 | #include "filenames.h" | |
e909d859 | 31 | #include "remote.h" |
18d3cec5 | 32 | #include "xml-tdesc.h" |
5ac87a99 | 33 | #include "target-descriptions.h" |
0747795c | 34 | #include "common/buffer.h" |
325fac50 | 35 | #include <algorithm> |
11395323 YQ |
36 | |
37 | #ifndef O_LARGEFILE | |
38 | #define O_LARGEFILE 0 | |
39 | #endif | |
7951c4eb | 40 | |
f6ac5f3d PA |
41 | /* The tfile target. */ |
42 | ||
d9f719f1 PA |
43 | static const target_info tfile_target_info = { |
44 | "tfile", | |
45 | N_("Local trace dump file"), | |
46 | N_("Use a trace file as a target. Specify the filename of the trace file.") | |
47 | }; | |
48 | ||
f6ac5f3d PA |
49 | class tfile_target final : public tracefile_target |
50 | { | |
51 | public: | |
d9f719f1 PA |
52 | const target_info &info () const override |
53 | { return tfile_target_info; } | |
f6ac5f3d | 54 | |
f6ac5f3d PA |
55 | void close () override; |
56 | void fetch_registers (struct regcache *, int) override; | |
57 | enum target_xfer_status xfer_partial (enum target_object object, | |
58 | const char *annex, | |
59 | gdb_byte *readbuf, | |
60 | const gdb_byte *writebuf, | |
61 | ULONGEST offset, ULONGEST len, | |
62 | ULONGEST *xfered_len) override; | |
63 | void files_info () override; | |
64 | int trace_find (enum trace_find_type type, int num, | |
65 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
57810aa7 | 66 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
67 | traceframe_info_up traceframe_info () override; |
68 | ||
69 | void get_tracepoint_status (struct breakpoint *tp, | |
70 | struct uploaded_tp *utp) override; | |
71 | }; | |
72 | ||
7951c4eb YQ |
73 | /* TFILE trace writer. */ |
74 | ||
75 | struct tfile_trace_file_writer | |
76 | { | |
77 | struct trace_file_writer base; | |
78 | ||
79 | /* File pointer to tfile trace file. */ | |
80 | FILE *fp; | |
81 | /* Path name of the tfile trace file. */ | |
82 | char *pathname; | |
83 | }; | |
84 | ||
85 | /* This is the implementation of trace_file_write_ops method | |
86 | target_save. We just call the generic target | |
87 | target_save_trace_data to do target-side saving. */ | |
88 | ||
89 | static int | |
90 | tfile_target_save (struct trace_file_writer *self, | |
91 | const char *filename) | |
92 | { | |
93 | int err = target_save_trace_data (filename); | |
94 | ||
95 | return (err >= 0); | |
96 | } | |
97 | ||
98 | /* This is the implementation of trace_file_write_ops method | |
99 | dtor. */ | |
100 | ||
101 | static void | |
102 | tfile_dtor (struct trace_file_writer *self) | |
103 | { | |
104 | struct tfile_trace_file_writer *writer | |
105 | = (struct tfile_trace_file_writer *) self; | |
106 | ||
107 | xfree (writer->pathname); | |
108 | ||
109 | if (writer->fp != NULL) | |
110 | fclose (writer->fp); | |
111 | } | |
112 | ||
113 | /* This is the implementation of trace_file_write_ops method | |
114 | start. It creates the trace file FILENAME and registers some | |
115 | cleanups. */ | |
116 | ||
117 | static void | |
118 | tfile_start (struct trace_file_writer *self, const char *filename) | |
119 | { | |
120 | struct tfile_trace_file_writer *writer | |
121 | = (struct tfile_trace_file_writer *) self; | |
122 | ||
123 | writer->pathname = tilde_expand (filename); | |
d419f42d | 124 | writer->fp = gdb_fopen_cloexec (writer->pathname, "wb").release (); |
7951c4eb YQ |
125 | if (writer->fp == NULL) |
126 | error (_("Unable to open file '%s' for saving trace data (%s)"), | |
127 | writer->pathname, safe_strerror (errno)); | |
128 | } | |
129 | ||
130 | /* This is the implementation of trace_file_write_ops method | |
131 | write_header. Write the TFILE header. */ | |
132 | ||
133 | static void | |
134 | tfile_write_header (struct trace_file_writer *self) | |
135 | { | |
136 | struct tfile_trace_file_writer *writer | |
137 | = (struct tfile_trace_file_writer *) self; | |
138 | int written; | |
139 | ||
140 | /* Write a file header, with a high-bit-set char to indicate a | |
141 | binary file, plus a hint as what this file is, and a version | |
142 | number in case of future needs. */ | |
143 | written = fwrite ("\x7fTRACE0\n", 8, 1, writer->fp); | |
144 | if (written < 1) | |
145 | perror_with_name (writer->pathname); | |
146 | } | |
147 | ||
148 | /* This is the implementation of trace_file_write_ops method | |
149 | write_regblock_type. Write the size of register block. */ | |
150 | ||
151 | static void | |
152 | tfile_write_regblock_type (struct trace_file_writer *self, int size) | |
153 | { | |
154 | struct tfile_trace_file_writer *writer | |
155 | = (struct tfile_trace_file_writer *) self; | |
156 | ||
157 | fprintf (writer->fp, "R %x\n", size); | |
158 | } | |
159 | ||
160 | /* This is the implementation of trace_file_write_ops method | |
161 | write_status. */ | |
162 | ||
163 | static void | |
164 | tfile_write_status (struct trace_file_writer *self, | |
165 | struct trace_status *ts) | |
166 | { | |
167 | struct tfile_trace_file_writer *writer | |
168 | = (struct tfile_trace_file_writer *) self; | |
169 | ||
170 | fprintf (writer->fp, "status %c;%s", | |
171 | (ts->running ? '1' : '0'), stop_reason_names[ts->stop_reason]); | |
172 | if (ts->stop_reason == tracepoint_error | |
e5a873b7 | 173 | || ts->stop_reason == trace_stop_command) |
7951c4eb YQ |
174 | { |
175 | char *buf = (char *) alloca (strlen (ts->stop_desc) * 2 + 1); | |
176 | ||
177 | bin2hex ((gdb_byte *) ts->stop_desc, buf, strlen (ts->stop_desc)); | |
178 | fprintf (writer->fp, ":%s", buf); | |
179 | } | |
180 | fprintf (writer->fp, ":%x", ts->stopping_tracepoint); | |
181 | if (ts->traceframe_count >= 0) | |
182 | fprintf (writer->fp, ";tframes:%x", ts->traceframe_count); | |
183 | if (ts->traceframes_created >= 0) | |
184 | fprintf (writer->fp, ";tcreated:%x", ts->traceframes_created); | |
185 | if (ts->buffer_free >= 0) | |
186 | fprintf (writer->fp, ";tfree:%x", ts->buffer_free); | |
187 | if (ts->buffer_size >= 0) | |
188 | fprintf (writer->fp, ";tsize:%x", ts->buffer_size); | |
189 | if (ts->disconnected_tracing) | |
190 | fprintf (writer->fp, ";disconn:%x", ts->disconnected_tracing); | |
191 | if (ts->circular_buffer) | |
192 | fprintf (writer->fp, ";circular:%x", ts->circular_buffer); | |
193 | if (ts->start_time) | |
194 | { | |
195 | fprintf (writer->fp, ";starttime:%s", | |
196 | phex_nz (ts->start_time, sizeof (ts->start_time))); | |
197 | } | |
198 | if (ts->stop_time) | |
199 | { | |
200 | fprintf (writer->fp, ";stoptime:%s", | |
201 | phex_nz (ts->stop_time, sizeof (ts->stop_time))); | |
202 | } | |
203 | if (ts->notes != NULL) | |
204 | { | |
205 | char *buf = (char *) alloca (strlen (ts->notes) * 2 + 1); | |
206 | ||
207 | bin2hex ((gdb_byte *) ts->notes, buf, strlen (ts->notes)); | |
208 | fprintf (writer->fp, ";notes:%s", buf); | |
209 | } | |
210 | if (ts->user_name != NULL) | |
211 | { | |
212 | char *buf = (char *) alloca (strlen (ts->user_name) * 2 + 1); | |
213 | ||
214 | bin2hex ((gdb_byte *) ts->user_name, buf, strlen (ts->user_name)); | |
215 | fprintf (writer->fp, ";username:%s", buf); | |
216 | } | |
217 | fprintf (writer->fp, "\n"); | |
218 | } | |
219 | ||
220 | /* This is the implementation of trace_file_write_ops method | |
221 | write_uploaded_tsv. */ | |
222 | ||
223 | static void | |
224 | tfile_write_uploaded_tsv (struct trace_file_writer *self, | |
225 | struct uploaded_tsv *utsv) | |
226 | { | |
a121b7c1 | 227 | char *buf = NULL; |
7951c4eb YQ |
228 | struct tfile_trace_file_writer *writer |
229 | = (struct tfile_trace_file_writer *) self; | |
230 | ||
231 | if (utsv->name) | |
232 | { | |
233 | buf = (char *) xmalloc (strlen (utsv->name) * 2 + 1); | |
234 | bin2hex ((gdb_byte *) (utsv->name), buf, strlen (utsv->name)); | |
235 | } | |
236 | ||
237 | fprintf (writer->fp, "tsv %x:%s:%x:%s\n", | |
238 | utsv->number, phex_nz (utsv->initial_value, 8), | |
a121b7c1 | 239 | utsv->builtin, buf != NULL ? buf : ""); |
7951c4eb YQ |
240 | |
241 | if (utsv->name) | |
242 | xfree (buf); | |
243 | } | |
244 | ||
245 | #define MAX_TRACE_UPLOAD 2000 | |
246 | ||
247 | /* This is the implementation of trace_file_write_ops method | |
248 | write_uploaded_tp. */ | |
249 | ||
250 | static void | |
251 | tfile_write_uploaded_tp (struct trace_file_writer *self, | |
252 | struct uploaded_tp *utp) | |
253 | { | |
254 | struct tfile_trace_file_writer *writer | |
255 | = (struct tfile_trace_file_writer *) self; | |
7951c4eb YQ |
256 | char buf[MAX_TRACE_UPLOAD]; |
257 | ||
258 | fprintf (writer->fp, "tp T%x:%s:%c:%x:%x", | |
259 | utp->number, phex_nz (utp->addr, sizeof (utp->addr)), | |
260 | (utp->enabled ? 'E' : 'D'), utp->step, utp->pass); | |
261 | if (utp->type == bp_fast_tracepoint) | |
262 | fprintf (writer->fp, ":F%x", utp->orig_size); | |
263 | if (utp->cond) | |
264 | fprintf (writer->fp, | |
67aa1f3c PA |
265 | ":X%x,%s", (unsigned int) strlen (utp->cond.get ()) / 2, |
266 | utp->cond.get ()); | |
7951c4eb | 267 | fprintf (writer->fp, "\n"); |
67aa1f3c | 268 | for (const auto &act : utp->actions) |
7951c4eb | 269 | fprintf (writer->fp, "tp A%x:%s:%s\n", |
67aa1f3c PA |
270 | utp->number, phex_nz (utp->addr, sizeof (utp->addr)), act.get ()); |
271 | for (const auto &act : utp->step_actions) | |
7951c4eb | 272 | fprintf (writer->fp, "tp S%x:%s:%s\n", |
67aa1f3c | 273 | utp->number, phex_nz (utp->addr, sizeof (utp->addr)), act.get ()); |
7951c4eb YQ |
274 | if (utp->at_string) |
275 | { | |
276 | encode_source_string (utp->number, utp->addr, | |
67aa1f3c PA |
277 | "at", utp->at_string.get (), |
278 | buf, MAX_TRACE_UPLOAD); | |
7951c4eb YQ |
279 | fprintf (writer->fp, "tp Z%s\n", buf); |
280 | } | |
281 | if (utp->cond_string) | |
282 | { | |
283 | encode_source_string (utp->number, utp->addr, | |
67aa1f3c | 284 | "cond", utp->cond_string.get (), |
7951c4eb YQ |
285 | buf, MAX_TRACE_UPLOAD); |
286 | fprintf (writer->fp, "tp Z%s\n", buf); | |
287 | } | |
67aa1f3c | 288 | for (const auto &act : utp->cmd_strings) |
7951c4eb | 289 | { |
67aa1f3c | 290 | encode_source_string (utp->number, utp->addr, "cmd", act.get (), |
7951c4eb YQ |
291 | buf, MAX_TRACE_UPLOAD); |
292 | fprintf (writer->fp, "tp Z%s\n", buf); | |
293 | } | |
294 | fprintf (writer->fp, "tp V%x:%s:%x:%s\n", | |
295 | utp->number, phex_nz (utp->addr, sizeof (utp->addr)), | |
296 | utp->hit_count, | |
297 | phex_nz (utp->traceframe_usage, | |
298 | sizeof (utp->traceframe_usage))); | |
299 | } | |
300 | ||
18d3cec5 MK |
301 | /* This is the implementation of trace_file_write_ops method |
302 | write_tdesc. */ | |
303 | ||
304 | static void | |
305 | tfile_write_tdesc (struct trace_file_writer *self) | |
306 | { | |
307 | struct tfile_trace_file_writer *writer | |
308 | = (struct tfile_trace_file_writer *) self; | |
18d3cec5 | 309 | |
bd8a901f | 310 | gdb::optional<std::string> tdesc |
8b88a78e | 311 | = target_fetch_description_xml (current_top_target ()); |
bd8a901f PA |
312 | |
313 | if (!tdesc) | |
18d3cec5 MK |
314 | return; |
315 | ||
bd8a901f PA |
316 | const char *ptr = tdesc->c_str (); |
317 | ||
18d3cec5 MK |
318 | /* Write tdesc line by line, prefixing each line with "tdesc ". */ |
319 | while (ptr != NULL) | |
320 | { | |
bd8a901f | 321 | const char *next = strchr (ptr, '\n'); |
18d3cec5 MK |
322 | if (next != NULL) |
323 | { | |
324 | fprintf (writer->fp, "tdesc %.*s\n", (int) (next - ptr), ptr); | |
325 | /* Skip the \n. */ | |
326 | next++; | |
327 | } | |
328 | else if (*ptr != '\0') | |
329 | { | |
330 | /* Last line, doesn't have a newline. */ | |
331 | fprintf (writer->fp, "tdesc %s\n", ptr); | |
332 | } | |
333 | ptr = next; | |
334 | } | |
18d3cec5 MK |
335 | } |
336 | ||
7951c4eb YQ |
337 | /* This is the implementation of trace_file_write_ops method |
338 | write_definition_end. */ | |
339 | ||
340 | static void | |
341 | tfile_write_definition_end (struct trace_file_writer *self) | |
342 | { | |
343 | struct tfile_trace_file_writer *writer | |
344 | = (struct tfile_trace_file_writer *) self; | |
345 | ||
346 | fprintf (writer->fp, "\n"); | |
347 | } | |
348 | ||
349 | /* This is the implementation of trace_file_write_ops method | |
350 | write_raw_data. */ | |
351 | ||
352 | static void | |
353 | tfile_write_raw_data (struct trace_file_writer *self, gdb_byte *buf, | |
354 | LONGEST len) | |
355 | { | |
356 | struct tfile_trace_file_writer *writer | |
357 | = (struct tfile_trace_file_writer *) self; | |
358 | ||
359 | if (fwrite (buf, len, 1, writer->fp) < 1) | |
360 | perror_with_name (writer->pathname); | |
361 | } | |
362 | ||
363 | /* This is the implementation of trace_file_write_ops method | |
364 | end. */ | |
365 | ||
366 | static void | |
367 | tfile_end (struct trace_file_writer *self) | |
368 | { | |
369 | struct tfile_trace_file_writer *writer | |
370 | = (struct tfile_trace_file_writer *) self; | |
371 | uint32_t gotten = 0; | |
372 | ||
373 | /* Mark the end of trace data. */ | |
374 | if (fwrite (&gotten, 4, 1, writer->fp) < 1) | |
375 | perror_with_name (writer->pathname); | |
376 | } | |
377 | ||
378 | /* Operations to write trace buffers into TFILE format. */ | |
379 | ||
380 | static const struct trace_file_write_ops tfile_write_ops = | |
381 | { | |
382 | tfile_dtor, | |
383 | tfile_target_save, | |
384 | tfile_start, | |
385 | tfile_write_header, | |
386 | tfile_write_regblock_type, | |
387 | tfile_write_status, | |
388 | tfile_write_uploaded_tsv, | |
389 | tfile_write_uploaded_tp, | |
18d3cec5 | 390 | tfile_write_tdesc, |
7951c4eb YQ |
391 | tfile_write_definition_end, |
392 | tfile_write_raw_data, | |
393 | NULL, | |
394 | tfile_end, | |
395 | }; | |
396 | ||
397 | /* Return a trace writer for TFILE format. */ | |
398 | ||
399 | struct trace_file_writer * | |
400 | tfile_trace_file_writer_new (void) | |
401 | { | |
402 | struct tfile_trace_file_writer *writer | |
8d749320 | 403 | = XNEW (struct tfile_trace_file_writer); |
7951c4eb YQ |
404 | |
405 | writer->base.ops = &tfile_write_ops; | |
406 | writer->fp = NULL; | |
407 | writer->pathname = NULL; | |
408 | ||
409 | return (struct trace_file_writer *) writer; | |
410 | } | |
11395323 YQ |
411 | |
412 | /* target tfile command */ | |
413 | ||
f6ac5f3d | 414 | static tfile_target tfile_ops; |
11395323 YQ |
415 | |
416 | #define TRACE_HEADER_SIZE 8 | |
417 | ||
418 | #define TFILE_PID (1) | |
419 | ||
420 | static char *trace_filename; | |
421 | static int trace_fd = -1; | |
422 | static off_t trace_frames_offset; | |
423 | static off_t cur_offset; | |
424 | static int cur_data_size; | |
425 | int trace_regblock_size; | |
5ac87a99 | 426 | static struct buffer trace_tdesc; |
11395323 | 427 | |
5ac87a99 | 428 | static void tfile_append_tdesc_line (const char *line); |
11395323 YQ |
429 | static void tfile_interp_line (char *line, |
430 | struct uploaded_tp **utpp, | |
431 | struct uploaded_tsv **utsvp); | |
432 | ||
433 | /* Read SIZE bytes into READBUF from the trace frame, starting at | |
434 | TRACE_FD's current position. Note that this call `read' | |
435 | underneath, hence it advances the file's seek position. Throws an | |
436 | error if the `read' syscall fails, or less than SIZE bytes are | |
437 | read. */ | |
438 | ||
439 | static void | |
440 | tfile_read (gdb_byte *readbuf, int size) | |
441 | { | |
442 | int gotten; | |
443 | ||
444 | gotten = read (trace_fd, readbuf, size); | |
445 | if (gotten < 0) | |
446 | perror_with_name (trace_filename); | |
447 | else if (gotten < size) | |
448 | error (_("Premature end of file while reading trace file")); | |
449 | } | |
450 | ||
d9f719f1 PA |
451 | /* Open the tfile target. */ |
452 | ||
453 | static void | |
454 | tfile_target_open (const char *arg, int from_tty) | |
11395323 | 455 | { |
11395323 YQ |
456 | int flags; |
457 | int scratch_chan; | |
458 | char header[TRACE_HEADER_SIZE]; | |
459 | char linebuf[1000]; /* Should be max remote packet size or so. */ | |
460 | gdb_byte byte; | |
461 | int bytes, i; | |
462 | struct trace_status *ts; | |
463 | struct uploaded_tp *uploaded_tps = NULL; | |
464 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
465 | ||
466 | target_preopen (from_tty); | |
014f9477 | 467 | if (!arg) |
11395323 YQ |
468 | error (_("No trace file specified.")); |
469 | ||
ee0c3293 TT |
470 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (arg)); |
471 | if (!IS_ABSOLUTE_PATH (filename.get ())) | |
472 | filename.reset (concat (current_directory, "/", filename.get (), | |
473 | (char *) NULL)); | |
11395323 YQ |
474 | |
475 | flags = O_BINARY | O_LARGEFILE; | |
476 | flags |= O_RDONLY; | |
ee0c3293 | 477 | scratch_chan = gdb_open_cloexec (filename.get (), flags, 0); |
11395323 | 478 | if (scratch_chan < 0) |
ee0c3293 | 479 | perror_with_name (filename.get ()); |
11395323 YQ |
480 | |
481 | /* Looks semi-reasonable. Toss the old trace file and work on the new. */ | |
482 | ||
11395323 YQ |
483 | unpush_target (&tfile_ops); |
484 | ||
ee0c3293 | 485 | trace_filename = filename.release (); |
11395323 YQ |
486 | trace_fd = scratch_chan; |
487 | ||
5ac87a99 MK |
488 | /* Make sure this is clear. */ |
489 | buffer_free (&trace_tdesc); | |
490 | ||
11395323 YQ |
491 | bytes = 0; |
492 | /* Read the file header and test for validity. */ | |
493 | tfile_read ((gdb_byte *) &header, TRACE_HEADER_SIZE); | |
494 | ||
495 | bytes += TRACE_HEADER_SIZE; | |
496 | if (!(header[0] == 0x7f | |
61012eef | 497 | && (startswith (header + 1, "TRACE0\n")))) |
11395323 YQ |
498 | error (_("File is not a valid trace file.")); |
499 | ||
500 | push_target (&tfile_ops); | |
501 | ||
502 | trace_regblock_size = 0; | |
503 | ts = current_trace_status (); | |
504 | /* We know we're working with a file. Record its name. */ | |
505 | ts->filename = trace_filename; | |
506 | /* Set defaults in case there is no status line. */ | |
507 | ts->running_known = 0; | |
508 | ts->stop_reason = trace_stop_reason_unknown; | |
509 | ts->traceframe_count = -1; | |
510 | ts->buffer_free = 0; | |
511 | ts->disconnected_tracing = 0; | |
512 | ts->circular_buffer = 0; | |
513 | ||
a70b8144 | 514 | try |
11395323 YQ |
515 | { |
516 | /* Read through a section of newline-terminated lines that | |
517 | define things like tracepoints. */ | |
518 | i = 0; | |
519 | while (1) | |
520 | { | |
521 | tfile_read (&byte, 1); | |
522 | ||
523 | ++bytes; | |
524 | if (byte == '\n') | |
525 | { | |
526 | /* Empty line marks end of the definition section. */ | |
527 | if (i == 0) | |
528 | break; | |
529 | linebuf[i] = '\0'; | |
530 | i = 0; | |
531 | tfile_interp_line (linebuf, &uploaded_tps, &uploaded_tsvs); | |
532 | } | |
533 | else | |
534 | linebuf[i++] = byte; | |
535 | if (i >= 1000) | |
536 | error (_("Excessively long lines in trace file")); | |
537 | } | |
538 | ||
5ac87a99 MK |
539 | /* By now, tdesc lines have been read from tfile - let's parse them. */ |
540 | target_find_description (); | |
541 | ||
11395323 YQ |
542 | /* Record the starting offset of the binary trace data. */ |
543 | trace_frames_offset = bytes; | |
544 | ||
545 | /* If we don't have a blocksize, we can't interpret the | |
546 | traceframes. */ | |
547 | if (trace_regblock_size == 0) | |
548 | error (_("No register block size recorded in trace file")); | |
549 | } | |
230d2906 | 550 | catch (const gdb_exception &ex) |
11395323 YQ |
551 | { |
552 | /* Remove the partially set up target. */ | |
553 | unpush_target (&tfile_ops); | |
eedc3f4f | 554 | throw; |
11395323 YQ |
555 | } |
556 | ||
557 | inferior_appeared (current_inferior (), TFILE_PID); | |
f2907e49 | 558 | inferior_ptid = ptid_t (TFILE_PID); |
11395323 YQ |
559 | add_thread_silent (inferior_ptid); |
560 | ||
561 | if (ts->traceframe_count <= 0) | |
562 | warning (_("No traceframes present in this file.")); | |
563 | ||
564 | /* Add the file's tracepoints and variables into the current mix. */ | |
565 | ||
566 | /* Get trace state variables first, they may be checked when parsing | |
567 | uploaded commands. */ | |
568 | merge_uploaded_trace_state_variables (&uploaded_tsvs); | |
569 | ||
570 | merge_uploaded_tracepoints (&uploaded_tps); | |
571 | ||
572 | post_create_inferior (&tfile_ops, from_tty); | |
573 | } | |
574 | ||
575 | /* Interpret the given line from the definitions part of the trace | |
576 | file. */ | |
577 | ||
578 | static void | |
579 | tfile_interp_line (char *line, struct uploaded_tp **utpp, | |
580 | struct uploaded_tsv **utsvp) | |
581 | { | |
582 | char *p = line; | |
583 | ||
61012eef | 584 | if (startswith (p, "R ")) |
11395323 YQ |
585 | { |
586 | p += strlen ("R "); | |
587 | trace_regblock_size = strtol (p, &p, 16); | |
588 | } | |
61012eef | 589 | else if (startswith (p, "status ")) |
11395323 YQ |
590 | { |
591 | p += strlen ("status "); | |
592 | parse_trace_status (p, current_trace_status ()); | |
593 | } | |
61012eef | 594 | else if (startswith (p, "tp ")) |
11395323 YQ |
595 | { |
596 | p += strlen ("tp "); | |
597 | parse_tracepoint_definition (p, utpp); | |
598 | } | |
61012eef | 599 | else if (startswith (p, "tsv ")) |
11395323 YQ |
600 | { |
601 | p += strlen ("tsv "); | |
602 | parse_tsv_definition (p, utsvp); | |
603 | } | |
5ac87a99 MK |
604 | else if (startswith (p, "tdesc ")) |
605 | { | |
606 | p += strlen ("tdesc "); | |
607 | tfile_append_tdesc_line (p); | |
608 | } | |
11395323 YQ |
609 | else |
610 | warning (_("Ignoring trace file definition \"%s\""), line); | |
611 | } | |
612 | ||
613 | /* Close the trace file and generally clean up. */ | |
614 | ||
f6ac5f3d PA |
615 | void |
616 | tfile_target::close () | |
11395323 | 617 | { |
11395323 YQ |
618 | if (trace_fd < 0) |
619 | return; | |
620 | ||
11395323 | 621 | inferior_ptid = null_ptid; /* Avoid confusion from thread stuff. */ |
00431a78 | 622 | exit_inferior_silent (current_inferior ()); |
11395323 | 623 | |
f6ac5f3d | 624 | ::close (trace_fd); |
11395323 YQ |
625 | trace_fd = -1; |
626 | xfree (trace_filename); | |
627 | trace_filename = NULL; | |
5ac87a99 | 628 | buffer_free (&trace_tdesc); |
11395323 YQ |
629 | |
630 | trace_reset_local_state (); | |
631 | } | |
632 | ||
f6ac5f3d PA |
633 | void |
634 | tfile_target::files_info () | |
11395323 YQ |
635 | { |
636 | printf_filtered ("\t`%s'\n", trace_filename); | |
637 | } | |
638 | ||
f6ac5f3d PA |
639 | void |
640 | tfile_target::get_tracepoint_status (struct breakpoint *tp, struct uploaded_tp *utp) | |
11395323 YQ |
641 | { |
642 | /* Other bits of trace status were collected as part of opening the | |
643 | trace files, so nothing to do here. */ | |
644 | } | |
645 | ||
646 | /* Given the position of a traceframe in the file, figure out what | |
647 | address the frame was collected at. This would normally be the | |
648 | value of a collected PC register, but if not available, we | |
649 | improvise. */ | |
650 | ||
651 | static CORE_ADDR | |
652 | tfile_get_traceframe_address (off_t tframe_offset) | |
653 | { | |
654 | CORE_ADDR addr = 0; | |
655 | short tpnum; | |
656 | struct tracepoint *tp; | |
657 | off_t saved_offset = cur_offset; | |
658 | ||
659 | /* FIXME dig pc out of collected registers. */ | |
660 | ||
661 | /* Fall back to using tracepoint address. */ | |
662 | lseek (trace_fd, tframe_offset, SEEK_SET); | |
663 | tfile_read ((gdb_byte *) &tpnum, 2); | |
664 | tpnum = (short) extract_signed_integer ((gdb_byte *) &tpnum, 2, | |
665 | gdbarch_byte_order | |
666 | (target_gdbarch ())); | |
667 | ||
668 | tp = get_tracepoint_by_number_on_target (tpnum); | |
669 | /* FIXME this is a poor heuristic if multiple locations. */ | |
c1fc2657 SM |
670 | if (tp && tp->loc) |
671 | addr = tp->loc->address; | |
11395323 YQ |
672 | |
673 | /* Restore our seek position. */ | |
674 | cur_offset = saved_offset; | |
675 | lseek (trace_fd, cur_offset, SEEK_SET); | |
676 | return addr; | |
677 | } | |
678 | ||
679 | /* Given a type of search and some parameters, scan the collection of | |
680 | traceframes in the file looking for a match. When found, return | |
681 | both the traceframe and tracepoint number, otherwise -1 for | |
682 | each. */ | |
683 | ||
f6ac5f3d PA |
684 | int |
685 | tfile_target::trace_find (enum trace_find_type type, int num, | |
686 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) | |
11395323 YQ |
687 | { |
688 | short tpnum; | |
689 | int tfnum = 0, found = 0; | |
690 | unsigned int data_size; | |
691 | struct tracepoint *tp; | |
692 | off_t offset, tframe_offset; | |
693 | CORE_ADDR tfaddr; | |
694 | ||
695 | if (num == -1) | |
696 | { | |
697 | if (tpp) | |
698 | *tpp = -1; | |
699 | return -1; | |
700 | } | |
701 | ||
702 | lseek (trace_fd, trace_frames_offset, SEEK_SET); | |
703 | offset = trace_frames_offset; | |
704 | while (1) | |
705 | { | |
706 | tframe_offset = offset; | |
707 | tfile_read ((gdb_byte *) &tpnum, 2); | |
708 | tpnum = (short) extract_signed_integer ((gdb_byte *) &tpnum, 2, | |
709 | gdbarch_byte_order | |
710 | (target_gdbarch ())); | |
711 | offset += 2; | |
712 | if (tpnum == 0) | |
713 | break; | |
714 | tfile_read ((gdb_byte *) &data_size, 4); | |
715 | data_size = (unsigned int) extract_unsigned_integer | |
716 | ((gdb_byte *) &data_size, 4, | |
717 | gdbarch_byte_order (target_gdbarch ())); | |
718 | offset += 4; | |
719 | ||
720 | if (type == tfind_number) | |
721 | { | |
722 | /* Looking for a specific trace frame. */ | |
723 | if (tfnum == num) | |
724 | found = 1; | |
725 | } | |
726 | else | |
727 | { | |
728 | /* Start from the _next_ trace frame. */ | |
729 | if (tfnum > get_traceframe_number ()) | |
730 | { | |
731 | switch (type) | |
732 | { | |
733 | case tfind_pc: | |
734 | tfaddr = tfile_get_traceframe_address (tframe_offset); | |
735 | if (tfaddr == addr1) | |
736 | found = 1; | |
737 | break; | |
738 | case tfind_tp: | |
739 | tp = get_tracepoint (num); | |
740 | if (tp && tpnum == tp->number_on_target) | |
741 | found = 1; | |
742 | break; | |
743 | case tfind_range: | |
744 | tfaddr = tfile_get_traceframe_address (tframe_offset); | |
745 | if (addr1 <= tfaddr && tfaddr <= addr2) | |
746 | found = 1; | |
747 | break; | |
748 | case tfind_outside: | |
749 | tfaddr = tfile_get_traceframe_address (tframe_offset); | |
750 | if (!(addr1 <= tfaddr && tfaddr <= addr2)) | |
751 | found = 1; | |
752 | break; | |
753 | default: | |
754 | internal_error (__FILE__, __LINE__, _("unknown tfind type")); | |
755 | } | |
756 | } | |
757 | } | |
758 | ||
759 | if (found) | |
760 | { | |
761 | if (tpp) | |
762 | *tpp = tpnum; | |
763 | cur_offset = offset; | |
764 | cur_data_size = data_size; | |
765 | ||
766 | return tfnum; | |
767 | } | |
768 | /* Skip past the traceframe's data. */ | |
769 | lseek (trace_fd, data_size, SEEK_CUR); | |
770 | offset += data_size; | |
771 | /* Update our own count of traceframes. */ | |
772 | ++tfnum; | |
773 | } | |
774 | /* Did not find what we were looking for. */ | |
775 | if (tpp) | |
776 | *tpp = -1; | |
777 | return -1; | |
778 | } | |
779 | ||
780 | /* Prototype of the callback passed to tframe_walk_blocks. */ | |
781 | typedef int (*walk_blocks_callback_func) (char blocktype, void *data); | |
782 | ||
783 | /* Callback for traceframe_walk_blocks, used to find a given block | |
784 | type in a traceframe. */ | |
785 | ||
786 | static int | |
787 | match_blocktype (char blocktype, void *data) | |
788 | { | |
19ba03f4 | 789 | char *wantedp = (char *) data; |
11395323 YQ |
790 | |
791 | if (*wantedp == blocktype) | |
792 | return 1; | |
793 | ||
794 | return 0; | |
795 | } | |
796 | ||
797 | /* Walk over all traceframe block starting at POS offset from | |
798 | CUR_OFFSET, and call CALLBACK for each block found, passing in DATA | |
799 | unmodified. If CALLBACK returns true, this returns the position in | |
800 | the traceframe where the block is found, relative to the start of | |
801 | the traceframe (cur_offset). Returns -1 if no callback call | |
802 | returned true, indicating that all blocks have been walked. */ | |
803 | ||
804 | static int | |
805 | traceframe_walk_blocks (walk_blocks_callback_func callback, | |
806 | int pos, void *data) | |
807 | { | |
808 | /* Iterate through a traceframe's blocks, looking for a block of the | |
809 | requested type. */ | |
810 | ||
811 | lseek (trace_fd, cur_offset + pos, SEEK_SET); | |
812 | while (pos < cur_data_size) | |
813 | { | |
814 | unsigned short mlen; | |
815 | char block_type; | |
816 | ||
817 | tfile_read ((gdb_byte *) &block_type, 1); | |
818 | ||
819 | ++pos; | |
820 | ||
821 | if ((*callback) (block_type, data)) | |
822 | return pos; | |
823 | ||
824 | switch (block_type) | |
825 | { | |
826 | case 'R': | |
827 | lseek (trace_fd, cur_offset + pos + trace_regblock_size, SEEK_SET); | |
828 | pos += trace_regblock_size; | |
829 | break; | |
830 | case 'M': | |
831 | lseek (trace_fd, cur_offset + pos + 8, SEEK_SET); | |
832 | tfile_read ((gdb_byte *) &mlen, 2); | |
833 | mlen = (unsigned short) | |
834 | extract_unsigned_integer ((gdb_byte *) &mlen, 2, | |
835 | gdbarch_byte_order | |
836 | (target_gdbarch ())); | |
837 | lseek (trace_fd, mlen, SEEK_CUR); | |
838 | pos += (8 + 2 + mlen); | |
839 | break; | |
840 | case 'V': | |
841 | lseek (trace_fd, cur_offset + pos + 4 + 8, SEEK_SET); | |
842 | pos += (4 + 8); | |
843 | break; | |
844 | default: | |
845 | error (_("Unknown block type '%c' (0x%x) in trace frame"), | |
846 | block_type, block_type); | |
847 | break; | |
848 | } | |
849 | } | |
850 | ||
851 | return -1; | |
852 | } | |
853 | ||
854 | /* Convenience wrapper around traceframe_walk_blocks. Looks for the | |
855 | position offset of a block of type TYPE_WANTED in the current trace | |
856 | frame, starting at POS. Returns -1 if no such block was found. */ | |
857 | ||
858 | static int | |
859 | traceframe_find_block_type (char type_wanted, int pos) | |
860 | { | |
861 | return traceframe_walk_blocks (match_blocktype, pos, &type_wanted); | |
862 | } | |
863 | ||
864 | /* Look for a block of saved registers in the traceframe, and get the | |
865 | requested register from it. */ | |
866 | ||
f6ac5f3d PA |
867 | void |
868 | tfile_target::fetch_registers (struct regcache *regcache, int regno) | |
11395323 | 869 | { |
ac7936df | 870 | struct gdbarch *gdbarch = regcache->arch (); |
e909d859 | 871 | int offset, regn, regsize, dummy; |
11395323 YQ |
872 | |
873 | /* An uninitialized reg size says we're not going to be | |
874 | successful at getting register blocks. */ | |
875 | if (!trace_regblock_size) | |
876 | return; | |
877 | ||
11395323 YQ |
878 | if (traceframe_find_block_type ('R', 0) >= 0) |
879 | { | |
224c3ddb | 880 | gdb_byte *regs = (gdb_byte *) alloca (trace_regblock_size); |
48b6e87e | 881 | |
11395323 YQ |
882 | tfile_read (regs, trace_regblock_size); |
883 | ||
11395323 YQ |
884 | for (regn = 0; regn < gdbarch_num_regs (gdbarch); regn++) |
885 | { | |
ac7936df | 886 | if (!remote_register_number_and_offset (regcache->arch (), |
e909d859 MK |
887 | regn, &dummy, &offset)) |
888 | continue; | |
889 | ||
11395323 YQ |
890 | regsize = register_size (gdbarch, regn); |
891 | /* Make sure we stay within block bounds. */ | |
473b99e5 | 892 | if (offset + regsize > trace_regblock_size) |
11395323 | 893 | break; |
0ec9f114 | 894 | if (regcache->get_register_status (regn) == REG_UNKNOWN) |
11395323 YQ |
895 | { |
896 | if (regno == regn) | |
897 | { | |
73e1c03f | 898 | regcache->raw_supply (regno, regs + offset); |
11395323 YQ |
899 | break; |
900 | } | |
901 | else if (regno == -1) | |
902 | { | |
73e1c03f | 903 | regcache->raw_supply (regn, regs + offset); |
11395323 YQ |
904 | } |
905 | } | |
11395323 | 906 | } |
11395323 | 907 | } |
48b6e87e YQ |
908 | else |
909 | tracefile_fetch_registers (regcache, regno); | |
11395323 YQ |
910 | } |
911 | ||
5ac87a99 | 912 | static enum target_xfer_status |
f6ac5f3d | 913 | tfile_xfer_partial_features (const char *annex, |
5ac87a99 MK |
914 | gdb_byte *readbuf, const gdb_byte *writebuf, |
915 | ULONGEST offset, ULONGEST len, | |
916 | ULONGEST *xfered_len) | |
917 | { | |
918 | if (strcmp (annex, "target.xml")) | |
919 | return TARGET_XFER_E_IO; | |
920 | ||
921 | if (readbuf == NULL) | |
922 | error (_("tfile_xfer_partial: tdesc is read-only")); | |
923 | ||
924 | if (trace_tdesc.used_size == 0) | |
925 | return TARGET_XFER_E_IO; | |
926 | ||
927 | if (offset >= trace_tdesc.used_size) | |
928 | return TARGET_XFER_EOF; | |
929 | ||
930 | if (len > trace_tdesc.used_size - offset) | |
931 | len = trace_tdesc.used_size - offset; | |
932 | ||
933 | memcpy (readbuf, trace_tdesc.buffer + offset, len); | |
934 | *xfered_len = len; | |
935 | ||
936 | return TARGET_XFER_OK; | |
937 | } | |
938 | ||
f6ac5f3d PA |
939 | enum target_xfer_status |
940 | tfile_target::xfer_partial (enum target_object object, | |
941 | const char *annex, gdb_byte *readbuf, | |
942 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
943 | ULONGEST *xfered_len) | |
11395323 | 944 | { |
5ac87a99 MK |
945 | /* We're only doing regular memory and tdesc for now. */ |
946 | if (object == TARGET_OBJECT_AVAILABLE_FEATURES) | |
f6ac5f3d | 947 | return tfile_xfer_partial_features (annex, readbuf, writebuf, |
5ac87a99 | 948 | offset, len, xfered_len); |
11395323 YQ |
949 | if (object != TARGET_OBJECT_MEMORY) |
950 | return TARGET_XFER_E_IO; | |
951 | ||
952 | if (readbuf == NULL) | |
953 | error (_("tfile_xfer_partial: trace file is read-only")); | |
954 | ||
955 | if (get_traceframe_number () != -1) | |
956 | { | |
957 | int pos = 0; | |
8acf9577 | 958 | enum target_xfer_status res; |
290a839c YQ |
959 | /* Records the lowest available address of all blocks that |
960 | intersects the requested range. */ | |
961 | ULONGEST low_addr_available = 0; | |
11395323 YQ |
962 | |
963 | /* Iterate through the traceframe's blocks, looking for | |
964 | memory. */ | |
965 | while ((pos = traceframe_find_block_type ('M', pos)) >= 0) | |
966 | { | |
967 | ULONGEST maddr, amt; | |
968 | unsigned short mlen; | |
969 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ()); | |
970 | ||
971 | tfile_read ((gdb_byte *) &maddr, 8); | |
972 | maddr = extract_unsigned_integer ((gdb_byte *) &maddr, 8, | |
973 | byte_order); | |
974 | tfile_read ((gdb_byte *) &mlen, 2); | |
975 | mlen = (unsigned short) | |
976 | extract_unsigned_integer ((gdb_byte *) &mlen, 2, byte_order); | |
977 | ||
978 | /* If the block includes the first part of the desired | |
979 | range, return as much it has; GDB will re-request the | |
980 | remainder, which might be in a different block of this | |
981 | trace frame. */ | |
982 | if (maddr <= offset && offset < (maddr + mlen)) | |
983 | { | |
984 | amt = (maddr + mlen) - offset; | |
985 | if (amt > len) | |
986 | amt = len; | |
987 | ||
988 | if (maddr != offset) | |
989 | lseek (trace_fd, offset - maddr, SEEK_CUR); | |
990 | tfile_read (readbuf, amt); | |
991 | *xfered_len = amt; | |
992 | return TARGET_XFER_OK; | |
993 | } | |
994 | ||
290a839c YQ |
995 | if (offset < maddr && maddr < (offset + len)) |
996 | if (low_addr_available == 0 || low_addr_available > maddr) | |
997 | low_addr_available = maddr; | |
998 | ||
11395323 YQ |
999 | /* Skip over this block. */ |
1000 | pos += (8 + 2 + mlen); | |
1001 | } | |
11395323 | 1002 | |
8acf9577 YQ |
1003 | /* Requested memory is unavailable in the context of traceframes, |
1004 | and this address falls within a read-only section, fallback | |
290a839c YQ |
1005 | to reading from executable, up to LOW_ADDR_AVAILABLE. */ |
1006 | if (offset < low_addr_available) | |
325fac50 | 1007 | len = std::min (len, low_addr_available - offset); |
8acf9577 YQ |
1008 | res = exec_read_partial_read_only (readbuf, offset, len, xfered_len); |
1009 | ||
1010 | if (res == TARGET_XFER_OK) | |
1011 | return TARGET_XFER_OK; | |
1012 | else | |
1013 | { | |
1014 | /* No use trying further, we know some memory starting | |
1015 | at MEMADDR isn't available. */ | |
1016 | *xfered_len = len; | |
1017 | return TARGET_XFER_UNAVAILABLE; | |
1018 | } | |
1ee79381 YQ |
1019 | } |
1020 | else | |
1021 | { | |
1022 | /* Fallback to reading from read-only sections. */ | |
1023 | return section_table_read_available_memory (readbuf, offset, len, | |
1024 | xfered_len); | |
1025 | } | |
11395323 YQ |
1026 | } |
1027 | ||
1028 | /* Iterate through the blocks of a trace frame, looking for a 'V' | |
1029 | block with a matching tsv number. */ | |
1030 | ||
57810aa7 | 1031 | bool |
f6ac5f3d | 1032 | tfile_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
11395323 YQ |
1033 | { |
1034 | int pos; | |
57810aa7 | 1035 | bool found = false; |
11395323 YQ |
1036 | |
1037 | /* Iterate over blocks in current frame and find the last 'V' | |
1038 | block in which tsv number is TSVNUM. In one trace frame, there | |
1039 | may be multiple 'V' blocks created for a given trace variable, | |
1040 | and the last matched 'V' block contains the updated value. */ | |
1041 | pos = 0; | |
1042 | while ((pos = traceframe_find_block_type ('V', pos)) >= 0) | |
1043 | { | |
1044 | int vnum; | |
1045 | ||
1046 | tfile_read ((gdb_byte *) &vnum, 4); | |
1047 | vnum = (int) extract_signed_integer ((gdb_byte *) &vnum, 4, | |
1048 | gdbarch_byte_order | |
1049 | (target_gdbarch ())); | |
1050 | if (tsvnum == vnum) | |
1051 | { | |
1052 | tfile_read ((gdb_byte *) val, 8); | |
1053 | *val = extract_signed_integer ((gdb_byte *) val, 8, | |
1054 | gdbarch_byte_order | |
1055 | (target_gdbarch ())); | |
57810aa7 | 1056 | found = true; |
11395323 YQ |
1057 | } |
1058 | pos += (4 + 8); | |
1059 | } | |
1060 | ||
1061 | return found; | |
1062 | } | |
1063 | ||
11395323 YQ |
1064 | /* Callback for traceframe_walk_blocks. Builds a traceframe_info |
1065 | object for the tfile target's current traceframe. */ | |
1066 | ||
1067 | static int | |
1068 | build_traceframe_info (char blocktype, void *data) | |
1069 | { | |
19ba03f4 | 1070 | struct traceframe_info *info = (struct traceframe_info *) data; |
11395323 YQ |
1071 | |
1072 | switch (blocktype) | |
1073 | { | |
1074 | case 'M': | |
1075 | { | |
11395323 YQ |
1076 | ULONGEST maddr; |
1077 | unsigned short mlen; | |
1078 | ||
1079 | tfile_read ((gdb_byte *) &maddr, 8); | |
1080 | maddr = extract_unsigned_integer ((gdb_byte *) &maddr, 8, | |
1081 | gdbarch_byte_order | |
1082 | (target_gdbarch ())); | |
1083 | tfile_read ((gdb_byte *) &mlen, 2); | |
1084 | mlen = (unsigned short) | |
1085 | extract_unsigned_integer ((gdb_byte *) &mlen, | |
1086 | 2, gdbarch_byte_order | |
1087 | (target_gdbarch ())); | |
1088 | ||
4cdd21a8 | 1089 | info->memory.emplace_back (maddr, mlen); |
11395323 YQ |
1090 | break; |
1091 | } | |
1092 | case 'V': | |
1093 | { | |
1094 | int vnum; | |
1095 | ||
1096 | tfile_read ((gdb_byte *) &vnum, 4); | |
d0d292a2 | 1097 | info->tvars.push_back (vnum); |
11395323 YQ |
1098 | } |
1099 | case 'R': | |
1100 | case 'S': | |
1101 | { | |
1102 | break; | |
1103 | } | |
1104 | default: | |
1105 | warning (_("Unhandled trace block type (%d) '%c ' " | |
1106 | "while building trace frame info."), | |
1107 | blocktype, blocktype); | |
1108 | break; | |
1109 | } | |
1110 | ||
1111 | return 0; | |
1112 | } | |
1113 | ||
f6ac5f3d PA |
1114 | traceframe_info_up |
1115 | tfile_target::traceframe_info () | |
11395323 | 1116 | { |
f6ac5f3d | 1117 | traceframe_info_up info (new struct traceframe_info); |
2098b393 SM |
1118 | |
1119 | traceframe_walk_blocks (build_traceframe_info, 0, info.get ()); | |
11395323 | 1120 | |
11395323 YQ |
1121 | return info; |
1122 | } | |
1123 | ||
5ac87a99 MK |
1124 | /* Handles tdesc lines from tfile by appending the payload to |
1125 | a global trace_tdesc variable. */ | |
1126 | ||
1127 | static void | |
1128 | tfile_append_tdesc_line (const char *line) | |
1129 | { | |
1130 | buffer_grow_str (&trace_tdesc, line); | |
1131 | buffer_grow_str (&trace_tdesc, "\n"); | |
1132 | } | |
1133 | ||
11395323 YQ |
1134 | void |
1135 | _initialize_tracefile_tfile (void) | |
1136 | { | |
d9f719f1 | 1137 | add_target (tfile_target_info, tfile_target_open, filename_completer); |
11395323 | 1138 | } |