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Commit | Line | Data |
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7951c4eb YQ |
1 | /* Trace file TFILE format support in GDB. |
2 | ||
1d506c26 | 3 | Copyright (C) 1997-2024 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 | ||
ec452525 | 20 | #include "extract-store-integer.h" |
7951c4eb YQ |
21 | #include "tracefile.h" |
22 | #include "readline/tilde.h" | |
268a13a5 | 23 | #include "gdbsupport/filestuff.h" |
ef0f16cc | 24 | #include "gdbsupport/rsp-low.h" |
11395323 YQ |
25 | #include "regcache.h" |
26 | #include "inferior.h" | |
27 | #include "gdbthread.h" | |
7e10abd1 | 28 | #include "exec.h" |
11395323 YQ |
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" |
ff8577f6 | 34 | #include "gdbsupport/pathstuff.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"), | |
590042fc PW |
46 | N_("Use a trace file as a target.\n\ |
47 | Specify the filename of the trace file.") | |
d9f719f1 PA |
48 | }; |
49 | ||
f6ac5f3d PA |
50 | class tfile_target final : public tracefile_target |
51 | { | |
52 | public: | |
d9f719f1 PA |
53 | const target_info &info () const override |
54 | { return tfile_target_info; } | |
f6ac5f3d | 55 | |
f6ac5f3d PA |
56 | void close () override; |
57 | void fetch_registers (struct regcache *, int) override; | |
58 | enum target_xfer_status xfer_partial (enum target_object object, | |
59 | const char *annex, | |
60 | gdb_byte *readbuf, | |
61 | const gdb_byte *writebuf, | |
62 | ULONGEST offset, ULONGEST len, | |
63 | ULONGEST *xfered_len) override; | |
64 | void files_info () override; | |
65 | int trace_find (enum trace_find_type type, int num, | |
66 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
57810aa7 | 67 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
68 | traceframe_info_up traceframe_info () override; |
69 | ||
01bccc56 | 70 | void get_tracepoint_status (tracepoint *tp, |
f6ac5f3d PA |
71 | struct uploaded_tp *utp) override; |
72 | }; | |
73 | ||
7951c4eb YQ |
74 | /* TFILE trace writer. */ |
75 | ||
76 | struct tfile_trace_file_writer | |
77 | { | |
78 | struct trace_file_writer base; | |
79 | ||
80 | /* File pointer to tfile trace file. */ | |
81 | FILE *fp; | |
82 | /* Path name of the tfile trace file. */ | |
83 | char *pathname; | |
84 | }; | |
85 | ||
86 | /* This is the implementation of trace_file_write_ops method | |
87 | target_save. We just call the generic target | |
88 | target_save_trace_data to do target-side saving. */ | |
89 | ||
90 | static int | |
91 | tfile_target_save (struct trace_file_writer *self, | |
92 | const char *filename) | |
93 | { | |
94 | int err = target_save_trace_data (filename); | |
95 | ||
96 | return (err >= 0); | |
97 | } | |
98 | ||
99 | /* This is the implementation of trace_file_write_ops method | |
100 | dtor. */ | |
101 | ||
102 | static void | |
103 | tfile_dtor (struct trace_file_writer *self) | |
104 | { | |
105 | struct tfile_trace_file_writer *writer | |
106 | = (struct tfile_trace_file_writer *) self; | |
107 | ||
108 | xfree (writer->pathname); | |
109 | ||
110 | if (writer->fp != NULL) | |
111 | fclose (writer->fp); | |
112 | } | |
113 | ||
114 | /* This is the implementation of trace_file_write_ops method | |
115 | start. It creates the trace file FILENAME and registers some | |
116 | cleanups. */ | |
117 | ||
118 | static void | |
119 | tfile_start (struct trace_file_writer *self, const char *filename) | |
120 | { | |
121 | struct tfile_trace_file_writer *writer | |
122 | = (struct tfile_trace_file_writer *) self; | |
123 | ||
124 | writer->pathname = tilde_expand (filename); | |
d419f42d | 125 | writer->fp = gdb_fopen_cloexec (writer->pathname, "wb").release (); |
7951c4eb YQ |
126 | if (writer->fp == NULL) |
127 | error (_("Unable to open file '%s' for saving trace data (%s)"), | |
128 | writer->pathname, safe_strerror (errno)); | |
129 | } | |
130 | ||
131 | /* This is the implementation of trace_file_write_ops method | |
132 | write_header. Write the TFILE header. */ | |
133 | ||
134 | static void | |
135 | tfile_write_header (struct trace_file_writer *self) | |
136 | { | |
137 | struct tfile_trace_file_writer *writer | |
138 | = (struct tfile_trace_file_writer *) self; | |
139 | int written; | |
140 | ||
141 | /* Write a file header, with a high-bit-set char to indicate a | |
142 | binary file, plus a hint as what this file is, and a version | |
143 | number in case of future needs. */ | |
144 | written = fwrite ("\x7fTRACE0\n", 8, 1, writer->fp); | |
145 | if (written < 1) | |
146 | perror_with_name (writer->pathname); | |
147 | } | |
148 | ||
149 | /* This is the implementation of trace_file_write_ops method | |
150 | write_regblock_type. Write the size of register block. */ | |
151 | ||
152 | static void | |
153 | tfile_write_regblock_type (struct trace_file_writer *self, int size) | |
154 | { | |
155 | struct tfile_trace_file_writer *writer | |
156 | = (struct tfile_trace_file_writer *) self; | |
157 | ||
158 | fprintf (writer->fp, "R %x\n", size); | |
159 | } | |
160 | ||
161 | /* This is the implementation of trace_file_write_ops method | |
162 | write_status. */ | |
163 | ||
164 | static void | |
165 | tfile_write_status (struct trace_file_writer *self, | |
166 | struct trace_status *ts) | |
167 | { | |
168 | struct tfile_trace_file_writer *writer | |
169 | = (struct tfile_trace_file_writer *) self; | |
170 | ||
171 | fprintf (writer->fp, "status %c;%s", | |
172 | (ts->running ? '1' : '0'), stop_reason_names[ts->stop_reason]); | |
173 | if (ts->stop_reason == tracepoint_error | |
e5a873b7 | 174 | || ts->stop_reason == trace_stop_command) |
7951c4eb YQ |
175 | { |
176 | char *buf = (char *) alloca (strlen (ts->stop_desc) * 2 + 1); | |
177 | ||
178 | bin2hex ((gdb_byte *) ts->stop_desc, buf, strlen (ts->stop_desc)); | |
179 | fprintf (writer->fp, ":%s", buf); | |
180 | } | |
181 | fprintf (writer->fp, ":%x", ts->stopping_tracepoint); | |
182 | if (ts->traceframe_count >= 0) | |
183 | fprintf (writer->fp, ";tframes:%x", ts->traceframe_count); | |
184 | if (ts->traceframes_created >= 0) | |
185 | fprintf (writer->fp, ";tcreated:%x", ts->traceframes_created); | |
186 | if (ts->buffer_free >= 0) | |
187 | fprintf (writer->fp, ";tfree:%x", ts->buffer_free); | |
188 | if (ts->buffer_size >= 0) | |
189 | fprintf (writer->fp, ";tsize:%x", ts->buffer_size); | |
190 | if (ts->disconnected_tracing) | |
191 | fprintf (writer->fp, ";disconn:%x", ts->disconnected_tracing); | |
192 | if (ts->circular_buffer) | |
193 | fprintf (writer->fp, ";circular:%x", ts->circular_buffer); | |
194 | if (ts->start_time) | |
195 | { | |
196 | fprintf (writer->fp, ";starttime:%s", | |
197 | phex_nz (ts->start_time, sizeof (ts->start_time))); | |
198 | } | |
199 | if (ts->stop_time) | |
200 | { | |
201 | fprintf (writer->fp, ";stoptime:%s", | |
202 | phex_nz (ts->stop_time, sizeof (ts->stop_time))); | |
203 | } | |
204 | if (ts->notes != NULL) | |
205 | { | |
206 | char *buf = (char *) alloca (strlen (ts->notes) * 2 + 1); | |
207 | ||
208 | bin2hex ((gdb_byte *) ts->notes, buf, strlen (ts->notes)); | |
209 | fprintf (writer->fp, ";notes:%s", buf); | |
210 | } | |
211 | if (ts->user_name != NULL) | |
212 | { | |
213 | char *buf = (char *) alloca (strlen (ts->user_name) * 2 + 1); | |
214 | ||
215 | bin2hex ((gdb_byte *) ts->user_name, buf, strlen (ts->user_name)); | |
216 | fprintf (writer->fp, ";username:%s", buf); | |
217 | } | |
218 | fprintf (writer->fp, "\n"); | |
219 | } | |
220 | ||
221 | /* This is the implementation of trace_file_write_ops method | |
222 | write_uploaded_tsv. */ | |
223 | ||
224 | static void | |
225 | tfile_write_uploaded_tsv (struct trace_file_writer *self, | |
226 | struct uploaded_tsv *utsv) | |
227 | { | |
fb4e5d7d | 228 | gdb::unique_xmalloc_ptr<char> buf; |
7951c4eb YQ |
229 | struct tfile_trace_file_writer *writer |
230 | = (struct tfile_trace_file_writer *) self; | |
231 | ||
232 | if (utsv->name) | |
233 | { | |
fb4e5d7d TT |
234 | buf.reset ((char *) xmalloc (strlen (utsv->name) * 2 + 1)); |
235 | bin2hex ((gdb_byte *) (utsv->name), buf.get (), strlen (utsv->name)); | |
7951c4eb YQ |
236 | } |
237 | ||
238 | fprintf (writer->fp, "tsv %x:%s:%x:%s\n", | |
239 | utsv->number, phex_nz (utsv->initial_value, 8), | |
fb4e5d7d | 240 | utsv->builtin, buf != NULL ? buf.get () : ""); |
7951c4eb YQ |
241 | } |
242 | ||
243 | #define MAX_TRACE_UPLOAD 2000 | |
244 | ||
245 | /* This is the implementation of trace_file_write_ops method | |
246 | write_uploaded_tp. */ | |
247 | ||
248 | static void | |
249 | tfile_write_uploaded_tp (struct trace_file_writer *self, | |
250 | struct uploaded_tp *utp) | |
251 | { | |
252 | struct tfile_trace_file_writer *writer | |
253 | = (struct tfile_trace_file_writer *) self; | |
7951c4eb YQ |
254 | char buf[MAX_TRACE_UPLOAD]; |
255 | ||
256 | fprintf (writer->fp, "tp T%x:%s:%c:%x:%x", | |
257 | utp->number, phex_nz (utp->addr, sizeof (utp->addr)), | |
258 | (utp->enabled ? 'E' : 'D'), utp->step, utp->pass); | |
259 | if (utp->type == bp_fast_tracepoint) | |
260 | fprintf (writer->fp, ":F%x", utp->orig_size); | |
261 | if (utp->cond) | |
262 | fprintf (writer->fp, | |
67aa1f3c PA |
263 | ":X%x,%s", (unsigned int) strlen (utp->cond.get ()) / 2, |
264 | utp->cond.get ()); | |
7951c4eb | 265 | fprintf (writer->fp, "\n"); |
67aa1f3c | 266 | for (const auto &act : utp->actions) |
7951c4eb | 267 | fprintf (writer->fp, "tp A%x:%s:%s\n", |
67aa1f3c PA |
268 | utp->number, phex_nz (utp->addr, sizeof (utp->addr)), act.get ()); |
269 | for (const auto &act : utp->step_actions) | |
7951c4eb | 270 | fprintf (writer->fp, "tp S%x:%s:%s\n", |
67aa1f3c | 271 | utp->number, phex_nz (utp->addr, sizeof (utp->addr)), act.get ()); |
7951c4eb YQ |
272 | if (utp->at_string) |
273 | { | |
274 | encode_source_string (utp->number, utp->addr, | |
67aa1f3c PA |
275 | "at", utp->at_string.get (), |
276 | buf, MAX_TRACE_UPLOAD); | |
7951c4eb YQ |
277 | fprintf (writer->fp, "tp Z%s\n", buf); |
278 | } | |
279 | if (utp->cond_string) | |
280 | { | |
281 | encode_source_string (utp->number, utp->addr, | |
67aa1f3c | 282 | "cond", utp->cond_string.get (), |
7951c4eb YQ |
283 | buf, MAX_TRACE_UPLOAD); |
284 | fprintf (writer->fp, "tp Z%s\n", buf); | |
285 | } | |
67aa1f3c | 286 | for (const auto &act : utp->cmd_strings) |
7951c4eb | 287 | { |
67aa1f3c | 288 | encode_source_string (utp->number, utp->addr, "cmd", act.get (), |
7951c4eb YQ |
289 | buf, MAX_TRACE_UPLOAD); |
290 | fprintf (writer->fp, "tp Z%s\n", buf); | |
291 | } | |
292 | fprintf (writer->fp, "tp V%x:%s:%x:%s\n", | |
293 | utp->number, phex_nz (utp->addr, sizeof (utp->addr)), | |
294 | utp->hit_count, | |
295 | phex_nz (utp->traceframe_usage, | |
296 | sizeof (utp->traceframe_usage))); | |
297 | } | |
298 | ||
18d3cec5 MK |
299 | /* This is the implementation of trace_file_write_ops method |
300 | write_tdesc. */ | |
301 | ||
302 | static void | |
303 | tfile_write_tdesc (struct trace_file_writer *self) | |
304 | { | |
305 | struct tfile_trace_file_writer *writer | |
306 | = (struct tfile_trace_file_writer *) self; | |
18d3cec5 | 307 | |
6b09f134 | 308 | std::optional<std::string> tdesc |
328d42d8 | 309 | = target_fetch_description_xml (current_inferior ()->top_target ()); |
bd8a901f PA |
310 | |
311 | if (!tdesc) | |
18d3cec5 MK |
312 | return; |
313 | ||
bd8a901f PA |
314 | const char *ptr = tdesc->c_str (); |
315 | ||
18d3cec5 MK |
316 | /* Write tdesc line by line, prefixing each line with "tdesc ". */ |
317 | while (ptr != NULL) | |
318 | { | |
bd8a901f | 319 | const char *next = strchr (ptr, '\n'); |
18d3cec5 MK |
320 | if (next != NULL) |
321 | { | |
322 | fprintf (writer->fp, "tdesc %.*s\n", (int) (next - ptr), ptr); | |
323 | /* Skip the \n. */ | |
324 | next++; | |
325 | } | |
326 | else if (*ptr != '\0') | |
327 | { | |
328 | /* Last line, doesn't have a newline. */ | |
329 | fprintf (writer->fp, "tdesc %s\n", ptr); | |
330 | } | |
331 | ptr = next; | |
332 | } | |
18d3cec5 MK |
333 | } |
334 | ||
7951c4eb YQ |
335 | /* This is the implementation of trace_file_write_ops method |
336 | write_definition_end. */ | |
337 | ||
338 | static void | |
339 | tfile_write_definition_end (struct trace_file_writer *self) | |
340 | { | |
341 | struct tfile_trace_file_writer *writer | |
342 | = (struct tfile_trace_file_writer *) self; | |
343 | ||
344 | fprintf (writer->fp, "\n"); | |
345 | } | |
346 | ||
347 | /* This is the implementation of trace_file_write_ops method | |
348 | write_raw_data. */ | |
349 | ||
350 | static void | |
351 | tfile_write_raw_data (struct trace_file_writer *self, gdb_byte *buf, | |
352 | LONGEST len) | |
353 | { | |
354 | struct tfile_trace_file_writer *writer | |
355 | = (struct tfile_trace_file_writer *) self; | |
356 | ||
357 | if (fwrite (buf, len, 1, writer->fp) < 1) | |
358 | perror_with_name (writer->pathname); | |
359 | } | |
360 | ||
361 | /* This is the implementation of trace_file_write_ops method | |
362 | end. */ | |
363 | ||
364 | static void | |
365 | tfile_end (struct trace_file_writer *self) | |
366 | { | |
367 | struct tfile_trace_file_writer *writer | |
368 | = (struct tfile_trace_file_writer *) self; | |
369 | uint32_t gotten = 0; | |
370 | ||
371 | /* Mark the end of trace data. */ | |
372 | if (fwrite (&gotten, 4, 1, writer->fp) < 1) | |
373 | perror_with_name (writer->pathname); | |
374 | } | |
375 | ||
376 | /* Operations to write trace buffers into TFILE format. */ | |
377 | ||
378 | static const struct trace_file_write_ops tfile_write_ops = | |
379 | { | |
380 | tfile_dtor, | |
381 | tfile_target_save, | |
382 | tfile_start, | |
383 | tfile_write_header, | |
384 | tfile_write_regblock_type, | |
385 | tfile_write_status, | |
386 | tfile_write_uploaded_tsv, | |
387 | tfile_write_uploaded_tp, | |
18d3cec5 | 388 | tfile_write_tdesc, |
7951c4eb YQ |
389 | tfile_write_definition_end, |
390 | tfile_write_raw_data, | |
391 | NULL, | |
392 | tfile_end, | |
393 | }; | |
394 | ||
395 | /* Return a trace writer for TFILE format. */ | |
396 | ||
397 | struct trace_file_writer * | |
398 | tfile_trace_file_writer_new (void) | |
399 | { | |
400 | struct tfile_trace_file_writer *writer | |
8d749320 | 401 | = XNEW (struct tfile_trace_file_writer); |
7951c4eb YQ |
402 | |
403 | writer->base.ops = &tfile_write_ops; | |
404 | writer->fp = NULL; | |
405 | writer->pathname = NULL; | |
406 | ||
407 | return (struct trace_file_writer *) writer; | |
408 | } | |
11395323 YQ |
409 | |
410 | /* target tfile command */ | |
411 | ||
f6ac5f3d | 412 | static tfile_target tfile_ops; |
11395323 YQ |
413 | |
414 | #define TRACE_HEADER_SIZE 8 | |
415 | ||
416 | #define TFILE_PID (1) | |
417 | ||
c7b3e746 | 418 | static gdb::unique_xmalloc_ptr<char> trace_filename; |
11395323 YQ |
419 | static int trace_fd = -1; |
420 | static off_t trace_frames_offset; | |
421 | static off_t cur_offset; | |
422 | static int cur_data_size; | |
423 | int trace_regblock_size; | |
588d3013 | 424 | static std::string trace_tdesc; |
11395323 | 425 | |
5ac87a99 | 426 | static void tfile_append_tdesc_line (const char *line); |
d3a05ac8 | 427 | static void tfile_interp_line (const char *line, |
11395323 YQ |
428 | struct uploaded_tp **utpp, |
429 | struct uploaded_tsv **utsvp); | |
430 | ||
431 | /* Read SIZE bytes into READBUF from the trace frame, starting at | |
432 | TRACE_FD's current position. Note that this call `read' | |
433 | underneath, hence it advances the file's seek position. Throws an | |
434 | error if the `read' syscall fails, or less than SIZE bytes are | |
435 | read. */ | |
436 | ||
437 | static void | |
438 | tfile_read (gdb_byte *readbuf, int size) | |
439 | { | |
440 | int gotten; | |
441 | ||
442 | gotten = read (trace_fd, readbuf, size); | |
443 | if (gotten < 0) | |
c7b3e746 | 444 | perror_with_name (trace_filename.get ()); |
11395323 YQ |
445 | else if (gotten < size) |
446 | error (_("Premature end of file while reading trace file")); | |
447 | } | |
448 | ||
d9f719f1 PA |
449 | /* Open the tfile target. */ |
450 | ||
451 | static void | |
452 | tfile_target_open (const char *arg, int from_tty) | |
11395323 | 453 | { |
11395323 YQ |
454 | int flags; |
455 | int scratch_chan; | |
456 | char header[TRACE_HEADER_SIZE]; | |
457 | char linebuf[1000]; /* Should be max remote packet size or so. */ | |
458 | gdb_byte byte; | |
459 | int bytes, i; | |
460 | struct trace_status *ts; | |
461 | struct uploaded_tp *uploaded_tps = NULL; | |
462 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
463 | ||
464 | target_preopen (from_tty); | |
014f9477 | 465 | if (!arg) |
11395323 YQ |
466 | error (_("No trace file specified.")); |
467 | ||
ee0c3293 TT |
468 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (arg)); |
469 | if (!IS_ABSOLUTE_PATH (filename.get ())) | |
7ab2607f | 470 | filename = make_unique_xstrdup (gdb_abspath (filename.get ()).c_str ()); |
11395323 YQ |
471 | |
472 | flags = O_BINARY | O_LARGEFILE; | |
473 | flags |= O_RDONLY; | |
13084383 | 474 | scratch_chan = gdb_open_cloexec (filename.get (), flags, 0).release (); |
11395323 | 475 | if (scratch_chan < 0) |
ee0c3293 | 476 | perror_with_name (filename.get ()); |
11395323 YQ |
477 | |
478 | /* Looks semi-reasonable. Toss the old trace file and work on the new. */ | |
479 | ||
fadf6add | 480 | current_inferior ()->unpush_target (&tfile_ops); |
11395323 | 481 | |
c7b3e746 | 482 | trace_filename = std::move (filename); |
11395323 YQ |
483 | trace_fd = scratch_chan; |
484 | ||
5ac87a99 | 485 | /* Make sure this is clear. */ |
588d3013 | 486 | trace_tdesc.clear (); |
5ac87a99 | 487 | |
11395323 YQ |
488 | bytes = 0; |
489 | /* Read the file header and test for validity. */ | |
490 | tfile_read ((gdb_byte *) &header, TRACE_HEADER_SIZE); | |
491 | ||
492 | bytes += TRACE_HEADER_SIZE; | |
493 | if (!(header[0] == 0x7f | |
61012eef | 494 | && (startswith (header + 1, "TRACE0\n")))) |
11395323 YQ |
495 | error (_("File is not a valid trace file.")); |
496 | ||
02980c56 | 497 | current_inferior ()->push_target (&tfile_ops); |
11395323 YQ |
498 | |
499 | trace_regblock_size = 0; | |
500 | ts = current_trace_status (); | |
501 | /* We know we're working with a file. Record its name. */ | |
c7b3e746 | 502 | ts->filename = trace_filename.get (); |
11395323 YQ |
503 | /* Set defaults in case there is no status line. */ |
504 | ts->running_known = 0; | |
505 | ts->stop_reason = trace_stop_reason_unknown; | |
506 | ts->traceframe_count = -1; | |
507 | ts->buffer_free = 0; | |
508 | ts->disconnected_tracing = 0; | |
509 | ts->circular_buffer = 0; | |
510 | ||
a70b8144 | 511 | try |
11395323 YQ |
512 | { |
513 | /* Read through a section of newline-terminated lines that | |
514 | define things like tracepoints. */ | |
515 | i = 0; | |
516 | while (1) | |
517 | { | |
518 | tfile_read (&byte, 1); | |
519 | ||
520 | ++bytes; | |
521 | if (byte == '\n') | |
522 | { | |
523 | /* Empty line marks end of the definition section. */ | |
524 | if (i == 0) | |
525 | break; | |
526 | linebuf[i] = '\0'; | |
527 | i = 0; | |
528 | tfile_interp_line (linebuf, &uploaded_tps, &uploaded_tsvs); | |
529 | } | |
530 | else | |
531 | linebuf[i++] = byte; | |
532 | if (i >= 1000) | |
533 | error (_("Excessively long lines in trace file")); | |
534 | } | |
535 | ||
5ac87a99 MK |
536 | /* By now, tdesc lines have been read from tfile - let's parse them. */ |
537 | target_find_description (); | |
538 | ||
11395323 YQ |
539 | /* Record the starting offset of the binary trace data. */ |
540 | trace_frames_offset = bytes; | |
541 | ||
542 | /* If we don't have a blocksize, we can't interpret the | |
543 | traceframes. */ | |
544 | if (trace_regblock_size == 0) | |
545 | error (_("No register block size recorded in trace file")); | |
546 | } | |
230d2906 | 547 | catch (const gdb_exception &ex) |
11395323 YQ |
548 | { |
549 | /* Remove the partially set up target. */ | |
fadf6add | 550 | current_inferior ()->unpush_target (&tfile_ops); |
eedc3f4f | 551 | throw; |
11395323 YQ |
552 | } |
553 | ||
554 | inferior_appeared (current_inferior (), TFILE_PID); | |
087e161b PA |
555 | |
556 | thread_info *thr = add_thread_silent (&tfile_ops, ptid_t (TFILE_PID)); | |
557 | switch_to_thread (thr); | |
11395323 YQ |
558 | |
559 | if (ts->traceframe_count <= 0) | |
560 | warning (_("No traceframes present in this file.")); | |
561 | ||
562 | /* Add the file's tracepoints and variables into the current mix. */ | |
563 | ||
564 | /* Get trace state variables first, they may be checked when parsing | |
565 | uploaded commands. */ | |
566 | merge_uploaded_trace_state_variables (&uploaded_tsvs); | |
567 | ||
568 | merge_uploaded_tracepoints (&uploaded_tps); | |
569 | ||
a7aba266 | 570 | post_create_inferior (from_tty); |
11395323 YQ |
571 | } |
572 | ||
573 | /* Interpret the given line from the definitions part of the trace | |
574 | file. */ | |
575 | ||
576 | static void | |
d3a05ac8 | 577 | tfile_interp_line (const char *line, struct uploaded_tp **utpp, |
11395323 YQ |
578 | struct uploaded_tsv **utsvp) |
579 | { | |
d3a05ac8 | 580 | const char *p = line; |
11395323 | 581 | |
61012eef | 582 | if (startswith (p, "R ")) |
11395323 YQ |
583 | { |
584 | p += strlen ("R "); | |
d3a05ac8 | 585 | trace_regblock_size = strtol (p, nullptr, 16); |
11395323 | 586 | } |
61012eef | 587 | else if (startswith (p, "status ")) |
11395323 YQ |
588 | { |
589 | p += strlen ("status "); | |
590 | parse_trace_status (p, current_trace_status ()); | |
591 | } | |
61012eef | 592 | else if (startswith (p, "tp ")) |
11395323 YQ |
593 | { |
594 | p += strlen ("tp "); | |
595 | parse_tracepoint_definition (p, utpp); | |
596 | } | |
61012eef | 597 | else if (startswith (p, "tsv ")) |
11395323 YQ |
598 | { |
599 | p += strlen ("tsv "); | |
600 | parse_tsv_definition (p, utsvp); | |
601 | } | |
5ac87a99 MK |
602 | else if (startswith (p, "tdesc ")) |
603 | { | |
604 | p += strlen ("tdesc "); | |
605 | tfile_append_tdesc_line (p); | |
606 | } | |
11395323 YQ |
607 | else |
608 | warning (_("Ignoring trace file definition \"%s\""), line); | |
609 | } | |
610 | ||
611 | /* Close the trace file and generally clean up. */ | |
612 | ||
f6ac5f3d PA |
613 | void |
614 | tfile_target::close () | |
11395323 | 615 | { |
c17e02e1 | 616 | gdb_assert (trace_fd != -1); |
11395323 | 617 | |
087e161b | 618 | switch_to_no_thread (); /* Avoid confusion from thread stuff. */ |
9324bfea | 619 | exit_inferior (current_inferior ()); |
11395323 | 620 | |
f6ac5f3d | 621 | ::close (trace_fd); |
11395323 | 622 | trace_fd = -1; |
c7b3e746 | 623 | trace_filename.reset (); |
588d3013 | 624 | trace_tdesc.clear (); |
11395323 YQ |
625 | |
626 | trace_reset_local_state (); | |
627 | } | |
628 | ||
f6ac5f3d PA |
629 | void |
630 | tfile_target::files_info () | |
11395323 | 631 | { |
c7b3e746 | 632 | gdb_printf ("\t`%s'\n", trace_filename.get ()); |
11395323 YQ |
633 | } |
634 | ||
f6ac5f3d | 635 | void |
01bccc56 | 636 | tfile_target::get_tracepoint_status (tracepoint *tp, struct uploaded_tp *utp) |
11395323 YQ |
637 | { |
638 | /* Other bits of trace status were collected as part of opening the | |
639 | trace files, so nothing to do here. */ | |
640 | } | |
641 | ||
642 | /* Given the position of a traceframe in the file, figure out what | |
643 | address the frame was collected at. This would normally be the | |
644 | value of a collected PC register, but if not available, we | |
645 | improvise. */ | |
646 | ||
647 | static CORE_ADDR | |
648 | tfile_get_traceframe_address (off_t tframe_offset) | |
649 | { | |
650 | CORE_ADDR addr = 0; | |
651 | short tpnum; | |
652 | struct tracepoint *tp; | |
653 | off_t saved_offset = cur_offset; | |
654 | ||
655 | /* FIXME dig pc out of collected registers. */ | |
656 | ||
657 | /* Fall back to using tracepoint address. */ | |
658 | lseek (trace_fd, tframe_offset, SEEK_SET); | |
659 | tfile_read ((gdb_byte *) &tpnum, 2); | |
660 | tpnum = (short) extract_signed_integer ((gdb_byte *) &tpnum, 2, | |
661 | gdbarch_byte_order | |
99d9c3b9 | 662 | (current_inferior ()->arch ())); |
11395323 YQ |
663 | |
664 | tp = get_tracepoint_by_number_on_target (tpnum); | |
665 | /* FIXME this is a poor heuristic if multiple locations. */ | |
9dc1523b | 666 | if (tp != nullptr && tp->has_locations ()) |
f5951b9f | 667 | addr = tp->first_loc ().address; |
11395323 YQ |
668 | |
669 | /* Restore our seek position. */ | |
670 | cur_offset = saved_offset; | |
671 | lseek (trace_fd, cur_offset, SEEK_SET); | |
672 | return addr; | |
673 | } | |
674 | ||
675 | /* Given a type of search and some parameters, scan the collection of | |
676 | traceframes in the file looking for a match. When found, return | |
677 | both the traceframe and tracepoint number, otherwise -1 for | |
678 | each. */ | |
679 | ||
f6ac5f3d PA |
680 | int |
681 | tfile_target::trace_find (enum trace_find_type type, int num, | |
682 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) | |
11395323 YQ |
683 | { |
684 | short tpnum; | |
685 | int tfnum = 0, found = 0; | |
686 | unsigned int data_size; | |
687 | struct tracepoint *tp; | |
688 | off_t offset, tframe_offset; | |
689 | CORE_ADDR tfaddr; | |
690 | ||
691 | if (num == -1) | |
692 | { | |
693 | if (tpp) | |
dda83cd7 | 694 | *tpp = -1; |
11395323 YQ |
695 | return -1; |
696 | } | |
697 | ||
698 | lseek (trace_fd, trace_frames_offset, SEEK_SET); | |
699 | offset = trace_frames_offset; | |
700 | while (1) | |
701 | { | |
702 | tframe_offset = offset; | |
703 | tfile_read ((gdb_byte *) &tpnum, 2); | |
704 | tpnum = (short) extract_signed_integer ((gdb_byte *) &tpnum, 2, | |
705 | gdbarch_byte_order | |
99d9c3b9 | 706 | (current_inferior ()->arch ())); |
11395323 YQ |
707 | offset += 2; |
708 | if (tpnum == 0) | |
709 | break; | |
710 | tfile_read ((gdb_byte *) &data_size, 4); | |
711 | data_size = (unsigned int) extract_unsigned_integer | |
99d9c3b9 SM |
712 | ((gdb_byte *) &data_size, 4, |
713 | gdbarch_byte_order | |
714 | (current_inferior ()->arch ())); | |
11395323 YQ |
715 | offset += 4; |
716 | ||
717 | if (type == tfind_number) | |
718 | { | |
719 | /* Looking for a specific trace frame. */ | |
720 | if (tfnum == num) | |
721 | found = 1; | |
722 | } | |
723 | else | |
724 | { | |
725 | /* Start from the _next_ trace frame. */ | |
726 | if (tfnum > get_traceframe_number ()) | |
727 | { | |
728 | switch (type) | |
729 | { | |
730 | case tfind_pc: | |
731 | tfaddr = tfile_get_traceframe_address (tframe_offset); | |
732 | if (tfaddr == addr1) | |
733 | found = 1; | |
734 | break; | |
735 | case tfind_tp: | |
736 | tp = get_tracepoint (num); | |
737 | if (tp && tpnum == tp->number_on_target) | |
738 | found = 1; | |
739 | break; | |
740 | case tfind_range: | |
741 | tfaddr = tfile_get_traceframe_address (tframe_offset); | |
742 | if (addr1 <= tfaddr && tfaddr <= addr2) | |
743 | found = 1; | |
744 | break; | |
745 | case tfind_outside: | |
746 | tfaddr = tfile_get_traceframe_address (tframe_offset); | |
747 | if (!(addr1 <= tfaddr && tfaddr <= addr2)) | |
748 | found = 1; | |
749 | break; | |
750 | default: | |
f34652de | 751 | internal_error (_("unknown tfind type")); |
11395323 YQ |
752 | } |
753 | } | |
754 | } | |
755 | ||
756 | if (found) | |
757 | { | |
758 | if (tpp) | |
759 | *tpp = tpnum; | |
760 | cur_offset = offset; | |
761 | cur_data_size = data_size; | |
762 | ||
763 | return tfnum; | |
764 | } | |
765 | /* Skip past the traceframe's data. */ | |
766 | lseek (trace_fd, data_size, SEEK_CUR); | |
767 | offset += data_size; | |
768 | /* Update our own count of traceframes. */ | |
769 | ++tfnum; | |
770 | } | |
771 | /* Did not find what we were looking for. */ | |
772 | if (tpp) | |
773 | *tpp = -1; | |
774 | return -1; | |
775 | } | |
776 | ||
11395323 | 777 | /* Walk over all traceframe block starting at POS offset from |
ebd4fd0a TT |
778 | CUR_OFFSET, and call CALLBACK for each block found. If CALLBACK |
779 | returns true, this returns the position in the traceframe where the | |
780 | block is found, relative to the start of the traceframe | |
781 | (cur_offset). Returns -1 if no callback call returned true, | |
782 | indicating that all blocks have been walked. */ | |
11395323 YQ |
783 | |
784 | static int | |
ebd4fd0a | 785 | traceframe_walk_blocks (gdb::function_view<bool (char)> callback, int pos) |
11395323 YQ |
786 | { |
787 | /* Iterate through a traceframe's blocks, looking for a block of the | |
788 | requested type. */ | |
789 | ||
790 | lseek (trace_fd, cur_offset + pos, SEEK_SET); | |
791 | while (pos < cur_data_size) | |
792 | { | |
793 | unsigned short mlen; | |
794 | char block_type; | |
795 | ||
796 | tfile_read ((gdb_byte *) &block_type, 1); | |
797 | ||
798 | ++pos; | |
799 | ||
ebd4fd0a | 800 | if (callback (block_type)) |
11395323 YQ |
801 | return pos; |
802 | ||
803 | switch (block_type) | |
804 | { | |
805 | case 'R': | |
806 | lseek (trace_fd, cur_offset + pos + trace_regblock_size, SEEK_SET); | |
807 | pos += trace_regblock_size; | |
808 | break; | |
809 | case 'M': | |
810 | lseek (trace_fd, cur_offset + pos + 8, SEEK_SET); | |
811 | tfile_read ((gdb_byte *) &mlen, 2); | |
dda83cd7 SM |
812 | mlen = (unsigned short) |
813 | extract_unsigned_integer ((gdb_byte *) &mlen, 2, | |
814 | gdbarch_byte_order | |
99d9c3b9 | 815 | (current_inferior ()->arch ())); |
11395323 YQ |
816 | lseek (trace_fd, mlen, SEEK_CUR); |
817 | pos += (8 + 2 + mlen); | |
818 | break; | |
819 | case 'V': | |
820 | lseek (trace_fd, cur_offset + pos + 4 + 8, SEEK_SET); | |
821 | pos += (4 + 8); | |
822 | break; | |
823 | default: | |
824 | error (_("Unknown block type '%c' (0x%x) in trace frame"), | |
825 | block_type, block_type); | |
826 | break; | |
827 | } | |
828 | } | |
829 | ||
830 | return -1; | |
831 | } | |
832 | ||
833 | /* Convenience wrapper around traceframe_walk_blocks. Looks for the | |
834 | position offset of a block of type TYPE_WANTED in the current trace | |
835 | frame, starting at POS. Returns -1 if no such block was found. */ | |
836 | ||
837 | static int | |
838 | traceframe_find_block_type (char type_wanted, int pos) | |
839 | { | |
ebd4fd0a TT |
840 | return traceframe_walk_blocks ([&] (char blocktype) |
841 | { | |
842 | return blocktype == type_wanted; | |
843 | }, pos); | |
11395323 YQ |
844 | } |
845 | ||
846 | /* Look for a block of saved registers in the traceframe, and get the | |
847 | requested register from it. */ | |
848 | ||
f6ac5f3d PA |
849 | void |
850 | tfile_target::fetch_registers (struct regcache *regcache, int regno) | |
11395323 | 851 | { |
ac7936df | 852 | struct gdbarch *gdbarch = regcache->arch (); |
e909d859 | 853 | int offset, regn, regsize, dummy; |
11395323 YQ |
854 | |
855 | /* An uninitialized reg size says we're not going to be | |
856 | successful at getting register blocks. */ | |
857 | if (!trace_regblock_size) | |
858 | return; | |
859 | ||
11395323 YQ |
860 | if (traceframe_find_block_type ('R', 0) >= 0) |
861 | { | |
224c3ddb | 862 | gdb_byte *regs = (gdb_byte *) alloca (trace_regblock_size); |
48b6e87e | 863 | |
11395323 YQ |
864 | tfile_read (regs, trace_regblock_size); |
865 | ||
11395323 YQ |
866 | for (regn = 0; regn < gdbarch_num_regs (gdbarch); regn++) |
867 | { | |
ac7936df | 868 | if (!remote_register_number_and_offset (regcache->arch (), |
e909d859 MK |
869 | regn, &dummy, &offset)) |
870 | continue; | |
871 | ||
11395323 YQ |
872 | regsize = register_size (gdbarch, regn); |
873 | /* Make sure we stay within block bounds. */ | |
473b99e5 | 874 | if (offset + regsize > trace_regblock_size) |
11395323 | 875 | break; |
0ec9f114 | 876 | if (regcache->get_register_status (regn) == REG_UNKNOWN) |
11395323 YQ |
877 | { |
878 | if (regno == regn) | |
879 | { | |
73e1c03f | 880 | regcache->raw_supply (regno, regs + offset); |
11395323 YQ |
881 | break; |
882 | } | |
883 | else if (regno == -1) | |
884 | { | |
73e1c03f | 885 | regcache->raw_supply (regn, regs + offset); |
11395323 YQ |
886 | } |
887 | } | |
11395323 | 888 | } |
11395323 | 889 | } |
48b6e87e YQ |
890 | else |
891 | tracefile_fetch_registers (regcache, regno); | |
11395323 YQ |
892 | } |
893 | ||
5ac87a99 | 894 | static enum target_xfer_status |
f6ac5f3d | 895 | tfile_xfer_partial_features (const char *annex, |
5ac87a99 MK |
896 | gdb_byte *readbuf, const gdb_byte *writebuf, |
897 | ULONGEST offset, ULONGEST len, | |
898 | ULONGEST *xfered_len) | |
899 | { | |
900 | if (strcmp (annex, "target.xml")) | |
901 | return TARGET_XFER_E_IO; | |
902 | ||
903 | if (readbuf == NULL) | |
904 | error (_("tfile_xfer_partial: tdesc is read-only")); | |
905 | ||
588d3013 | 906 | if (trace_tdesc.empty ()) |
5ac87a99 MK |
907 | return TARGET_XFER_E_IO; |
908 | ||
588d3013 | 909 | if (offset >= trace_tdesc.length ()) |
5ac87a99 MK |
910 | return TARGET_XFER_EOF; |
911 | ||
588d3013 TT |
912 | if (len > trace_tdesc.length () - offset) |
913 | len = trace_tdesc.length () - offset; | |
5ac87a99 | 914 | |
588d3013 | 915 | memcpy (readbuf, trace_tdesc.c_str () + offset, len); |
5ac87a99 MK |
916 | *xfered_len = len; |
917 | ||
918 | return TARGET_XFER_OK; | |
919 | } | |
920 | ||
f6ac5f3d PA |
921 | enum target_xfer_status |
922 | tfile_target::xfer_partial (enum target_object object, | |
923 | const char *annex, gdb_byte *readbuf, | |
924 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
925 | ULONGEST *xfered_len) | |
11395323 | 926 | { |
5ac87a99 MK |
927 | /* We're only doing regular memory and tdesc for now. */ |
928 | if (object == TARGET_OBJECT_AVAILABLE_FEATURES) | |
f6ac5f3d | 929 | return tfile_xfer_partial_features (annex, readbuf, writebuf, |
5ac87a99 | 930 | offset, len, xfered_len); |
11395323 YQ |
931 | if (object != TARGET_OBJECT_MEMORY) |
932 | return TARGET_XFER_E_IO; | |
933 | ||
934 | if (readbuf == NULL) | |
935 | error (_("tfile_xfer_partial: trace file is read-only")); | |
936 | ||
937 | if (get_traceframe_number () != -1) | |
938 | { | |
939 | int pos = 0; | |
8acf9577 | 940 | enum target_xfer_status res; |
290a839c YQ |
941 | /* Records the lowest available address of all blocks that |
942 | intersects the requested range. */ | |
943 | ULONGEST low_addr_available = 0; | |
11395323 YQ |
944 | |
945 | /* Iterate through the traceframe's blocks, looking for | |
946 | memory. */ | |
947 | while ((pos = traceframe_find_block_type ('M', pos)) >= 0) | |
948 | { | |
949 | ULONGEST maddr, amt; | |
950 | unsigned short mlen; | |
99d9c3b9 SM |
951 | bfd_endian byte_order |
952 | = gdbarch_byte_order (current_inferior ()->arch ()); | |
11395323 YQ |
953 | |
954 | tfile_read ((gdb_byte *) &maddr, 8); | |
955 | maddr = extract_unsigned_integer ((gdb_byte *) &maddr, 8, | |
956 | byte_order); | |
957 | tfile_read ((gdb_byte *) &mlen, 2); | |
958 | mlen = (unsigned short) | |
959 | extract_unsigned_integer ((gdb_byte *) &mlen, 2, byte_order); | |
960 | ||
961 | /* If the block includes the first part of the desired | |
962 | range, return as much it has; GDB will re-request the | |
963 | remainder, which might be in a different block of this | |
964 | trace frame. */ | |
965 | if (maddr <= offset && offset < (maddr + mlen)) | |
966 | { | |
967 | amt = (maddr + mlen) - offset; | |
968 | if (amt > len) | |
969 | amt = len; | |
970 | ||
971 | if (maddr != offset) | |
dda83cd7 | 972 | lseek (trace_fd, offset - maddr, SEEK_CUR); |
11395323 YQ |
973 | tfile_read (readbuf, amt); |
974 | *xfered_len = amt; | |
975 | return TARGET_XFER_OK; | |
976 | } | |
977 | ||
290a839c YQ |
978 | if (offset < maddr && maddr < (offset + len)) |
979 | if (low_addr_available == 0 || low_addr_available > maddr) | |
980 | low_addr_available = maddr; | |
981 | ||
11395323 YQ |
982 | /* Skip over this block. */ |
983 | pos += (8 + 2 + mlen); | |
984 | } | |
11395323 | 985 | |
8acf9577 YQ |
986 | /* Requested memory is unavailable in the context of traceframes, |
987 | and this address falls within a read-only section, fallback | |
290a839c YQ |
988 | to reading from executable, up to LOW_ADDR_AVAILABLE. */ |
989 | if (offset < low_addr_available) | |
325fac50 | 990 | len = std::min (len, low_addr_available - offset); |
8acf9577 YQ |
991 | res = exec_read_partial_read_only (readbuf, offset, len, xfered_len); |
992 | ||
993 | if (res == TARGET_XFER_OK) | |
994 | return TARGET_XFER_OK; | |
995 | else | |
996 | { | |
997 | /* No use trying further, we know some memory starting | |
998 | at MEMADDR isn't available. */ | |
999 | *xfered_len = len; | |
1000 | return TARGET_XFER_UNAVAILABLE; | |
1001 | } | |
1ee79381 YQ |
1002 | } |
1003 | else | |
1004 | { | |
1005 | /* Fallback to reading from read-only sections. */ | |
1006 | return section_table_read_available_memory (readbuf, offset, len, | |
1007 | xfered_len); | |
1008 | } | |
11395323 YQ |
1009 | } |
1010 | ||
1011 | /* Iterate through the blocks of a trace frame, looking for a 'V' | |
1012 | block with a matching tsv number. */ | |
1013 | ||
57810aa7 | 1014 | bool |
f6ac5f3d | 1015 | tfile_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
11395323 YQ |
1016 | { |
1017 | int pos; | |
57810aa7 | 1018 | bool found = false; |
11395323 YQ |
1019 | |
1020 | /* Iterate over blocks in current frame and find the last 'V' | |
1021 | block in which tsv number is TSVNUM. In one trace frame, there | |
1022 | may be multiple 'V' blocks created for a given trace variable, | |
1023 | and the last matched 'V' block contains the updated value. */ | |
1024 | pos = 0; | |
1025 | while ((pos = traceframe_find_block_type ('V', pos)) >= 0) | |
1026 | { | |
1027 | int vnum; | |
1028 | ||
1029 | tfile_read ((gdb_byte *) &vnum, 4); | |
1030 | vnum = (int) extract_signed_integer ((gdb_byte *) &vnum, 4, | |
1031 | gdbarch_byte_order | |
99d9c3b9 | 1032 | (current_inferior ()->arch ())); |
11395323 YQ |
1033 | if (tsvnum == vnum) |
1034 | { | |
1035 | tfile_read ((gdb_byte *) val, 8); | |
1036 | *val = extract_signed_integer ((gdb_byte *) val, 8, | |
1037 | gdbarch_byte_order | |
99d9c3b9 | 1038 | (current_inferior ()->arch ())); |
57810aa7 | 1039 | found = true; |
11395323 YQ |
1040 | } |
1041 | pos += (4 + 8); | |
1042 | } | |
1043 | ||
1044 | return found; | |
1045 | } | |
1046 | ||
11395323 YQ |
1047 | /* Callback for traceframe_walk_blocks. Builds a traceframe_info |
1048 | object for the tfile target's current traceframe. */ | |
1049 | ||
ebd4fd0a TT |
1050 | static bool |
1051 | build_traceframe_info (char blocktype, struct traceframe_info *info) | |
11395323 | 1052 | { |
11395323 YQ |
1053 | switch (blocktype) |
1054 | { | |
1055 | case 'M': | |
1056 | { | |
11395323 YQ |
1057 | ULONGEST maddr; |
1058 | unsigned short mlen; | |
1059 | ||
1060 | tfile_read ((gdb_byte *) &maddr, 8); | |
1061 | maddr = extract_unsigned_integer ((gdb_byte *) &maddr, 8, | |
1062 | gdbarch_byte_order | |
99d9c3b9 | 1063 | (current_inferior ()->arch ())); |
11395323 YQ |
1064 | tfile_read ((gdb_byte *) &mlen, 2); |
1065 | mlen = (unsigned short) | |
1066 | extract_unsigned_integer ((gdb_byte *) &mlen, | |
99d9c3b9 SM |
1067 | 2, |
1068 | gdbarch_byte_order | |
1069 | (current_inferior ()->arch ())); | |
11395323 | 1070 | |
4cdd21a8 | 1071 | info->memory.emplace_back (maddr, mlen); |
11395323 YQ |
1072 | break; |
1073 | } | |
1074 | case 'V': | |
1075 | { | |
1076 | int vnum; | |
1077 | ||
1078 | tfile_read ((gdb_byte *) &vnum, 4); | |
d0d292a2 | 1079 | info->tvars.push_back (vnum); |
11395323 YQ |
1080 | } |
1081 | case 'R': | |
1082 | case 'S': | |
1083 | { | |
1084 | break; | |
1085 | } | |
1086 | default: | |
1087 | warning (_("Unhandled trace block type (%d) '%c ' " | |
1088 | "while building trace frame info."), | |
1089 | blocktype, blocktype); | |
1090 | break; | |
1091 | } | |
1092 | ||
ebd4fd0a | 1093 | return false; |
11395323 YQ |
1094 | } |
1095 | ||
f6ac5f3d PA |
1096 | traceframe_info_up |
1097 | tfile_target::traceframe_info () | |
11395323 | 1098 | { |
f6ac5f3d | 1099 | traceframe_info_up info (new struct traceframe_info); |
2098b393 | 1100 | |
ebd4fd0a TT |
1101 | traceframe_walk_blocks ([&] (char blocktype) |
1102 | { | |
1103 | return build_traceframe_info (blocktype, info.get ()); | |
1104 | }, 0); | |
11395323 | 1105 | |
11395323 YQ |
1106 | return info; |
1107 | } | |
1108 | ||
5ac87a99 MK |
1109 | /* Handles tdesc lines from tfile by appending the payload to |
1110 | a global trace_tdesc variable. */ | |
1111 | ||
1112 | static void | |
1113 | tfile_append_tdesc_line (const char *line) | |
1114 | { | |
588d3013 TT |
1115 | trace_tdesc += line; |
1116 | trace_tdesc += "\n"; | |
5ac87a99 MK |
1117 | } |
1118 | ||
6c265988 | 1119 | void _initialize_tracefile_tfile (); |
11395323 | 1120 | void |
6c265988 | 1121 | _initialize_tracefile_tfile () |
11395323 | 1122 | { |
d9f719f1 | 1123 | add_target (tfile_target_info, tfile_target_open, filename_completer); |
11395323 | 1124 | } |