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d0353e76 YQ |
1 | /* CTF format support. |
2 | ||
ecd75fc8 | 3 | Copyright (C) 2012-2014 Free Software Foundation, Inc. |
d0353e76 YQ |
4 | Contributed by Hui Zhu <hui_zhu@mentor.com> |
5 | Contributed by Yao Qi <yao@codesourcery.com> | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 3 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
21 | ||
22 | #include "defs.h" | |
23 | #include "ctf.h" | |
24 | #include "tracepoint.h" | |
25 | #include "regcache.h" | |
53ce3c39 | 26 | #include <sys/stat.h> |
393fd4c3 | 27 | #include "exec.h" |
da9160e4 | 28 | #include "completer.h" |
de7b2893 YQ |
29 | #include "inferior.h" |
30 | #include "gdbthread.h" | |
7951c4eb | 31 | #include "tracefile.h" |
d0353e76 YQ |
32 | |
33 | #include <ctype.h> | |
34 | ||
35 | /* GDB saves trace buffers and other information (such as trace | |
36 | status) got from the remote target into Common Trace Format (CTF). | |
37 | The following types of information are expected to save in CTF: | |
38 | ||
39 | 1. The length (in bytes) of register cache. Event "register" will | |
40 | be defined in metadata, which includes the length. | |
41 | ||
393fd4c3 YQ |
42 | 2. Trace status. Event "status" is defined in metadata, which |
43 | includes all aspects of trace status. | |
d0353e76 | 44 | |
393fd4c3 YQ |
45 | 3. Uploaded trace variables. Event "tsv_def" is defined in |
46 | metadata, which is about all aspects of a uploaded trace variable. | |
47 | Uploaded tracepoints. Event "tp_def" is defined in meta, which | |
48 | is about all aspects of an uploaded tracepoint. Note that the | |
49 | "sequence" (a CTF type, which is a dynamically-sized array.) is | |
50 | used for "actions" "step_actions" and "cmd_strings". | |
d0353e76 YQ |
51 | |
52 | 4. Trace frames. Each trace frame is composed by several blocks | |
53 | of different types ('R', 'M', 'V'). One trace frame is saved in | |
54 | one CTF packet and the blocks of this frame are saved as events. | |
55 | 4.1: The trace frame related information (such as the number of | |
56 | tracepoint associated with this frame) is saved in the packet | |
57 | context. | |
58 | 4.2: The block 'M', 'R' and 'V' are saved in event "memory", | |
59 | "register" and "tsv" respectively. | |
60 | 4.3: When iterating over events, babeltrace can't tell iterator | |
61 | goes to a new packet, so we need a marker or anchor to tell GDB | |
62 | that iterator goes into a new packet or frame. We define event | |
63 | "frame". */ | |
64 | ||
65 | #define CTF_MAGIC 0xC1FC1FC1 | |
66 | #define CTF_SAVE_MAJOR 1 | |
67 | #define CTF_SAVE_MINOR 8 | |
68 | ||
69 | #define CTF_METADATA_NAME "metadata" | |
70 | #define CTF_DATASTREAM_NAME "datastream" | |
71 | ||
72 | /* Reserved event id. */ | |
73 | ||
74 | #define CTF_EVENT_ID_REGISTER 0 | |
75 | #define CTF_EVENT_ID_TSV 1 | |
76 | #define CTF_EVENT_ID_MEMORY 2 | |
77 | #define CTF_EVENT_ID_FRAME 3 | |
393fd4c3 YQ |
78 | #define CTF_EVENT_ID_STATUS 4 |
79 | #define CTF_EVENT_ID_TSV_DEF 5 | |
80 | #define CTF_EVENT_ID_TP_DEF 6 | |
d0353e76 | 81 | |
de7b2893 YQ |
82 | #define CTF_PID (2) |
83 | ||
d0353e76 YQ |
84 | /* The state kept while writing the CTF datastream file. */ |
85 | ||
86 | struct trace_write_handler | |
87 | { | |
88 | /* File descriptor of metadata. */ | |
89 | FILE *metadata_fd; | |
90 | /* File descriptor of traceframes. */ | |
91 | FILE *datastream_fd; | |
92 | ||
93 | /* This is the content size of the current packet. */ | |
94 | size_t content_size; | |
95 | ||
96 | /* This is the start offset of current packet. */ | |
97 | long packet_start; | |
98 | }; | |
99 | ||
100 | /* Write metadata in FORMAT. */ | |
101 | ||
102 | static void | |
103 | ctf_save_write_metadata (struct trace_write_handler *handler, | |
104 | const char *format, ...) | |
105 | { | |
106 | va_list args; | |
107 | ||
108 | va_start (args, format); | |
109 | if (vfprintf (handler->metadata_fd, format, args) < 0) | |
110 | error (_("Unable to write metadata file (%s)"), | |
111 | safe_strerror (errno)); | |
112 | va_end (args); | |
113 | } | |
114 | ||
115 | /* Write BUF of length SIZE to datastream file represented by | |
116 | HANDLER. */ | |
117 | ||
118 | static int | |
119 | ctf_save_write (struct trace_write_handler *handler, | |
120 | const gdb_byte *buf, size_t size) | |
121 | { | |
122 | if (fwrite (buf, size, 1, handler->datastream_fd) != 1) | |
123 | error (_("Unable to write file for saving trace data (%s)"), | |
124 | safe_strerror (errno)); | |
125 | ||
126 | handler->content_size += size; | |
127 | ||
128 | return 0; | |
129 | } | |
130 | ||
131 | /* Write a unsigned 32-bit integer to datastream file represented by | |
132 | HANDLER. */ | |
133 | ||
134 | #define ctf_save_write_uint32(HANDLER, U32) \ | |
135 | ctf_save_write (HANDLER, (gdb_byte *) &U32, 4) | |
136 | ||
393fd4c3 YQ |
137 | /* Write a signed 32-bit integer to datastream file represented by |
138 | HANDLER. */ | |
139 | ||
140 | #define ctf_save_write_int32(HANDLER, INT32) \ | |
141 | ctf_save_write ((HANDLER), (gdb_byte *) &(INT32), 4) | |
142 | ||
d0353e76 YQ |
143 | /* Set datastream file position. Update HANDLER->content_size |
144 | if WHENCE is SEEK_CUR. */ | |
145 | ||
146 | static int | |
147 | ctf_save_fseek (struct trace_write_handler *handler, long offset, | |
148 | int whence) | |
149 | { | |
150 | gdb_assert (whence != SEEK_END); | |
151 | gdb_assert (whence != SEEK_SET | |
152 | || offset <= handler->content_size + handler->packet_start); | |
153 | ||
154 | if (fseek (handler->datastream_fd, offset, whence)) | |
155 | error (_("Unable to seek file for saving trace data (%s)"), | |
156 | safe_strerror (errno)); | |
157 | ||
158 | if (whence == SEEK_CUR) | |
159 | handler->content_size += offset; | |
160 | ||
161 | return 0; | |
162 | } | |
163 | ||
164 | /* Change the datastream file position to align on ALIGN_SIZE, | |
165 | and write BUF to datastream file. The size of BUF is SIZE. */ | |
166 | ||
167 | static int | |
168 | ctf_save_align_write (struct trace_write_handler *handler, | |
169 | const gdb_byte *buf, | |
170 | size_t size, size_t align_size) | |
171 | { | |
172 | long offset | |
173 | = (align_up (handler->content_size, align_size) | |
174 | - handler->content_size); | |
175 | ||
176 | if (ctf_save_fseek (handler, offset, SEEK_CUR)) | |
177 | return -1; | |
178 | ||
179 | if (ctf_save_write (handler, buf, size)) | |
180 | return -1; | |
181 | ||
182 | return 0; | |
183 | } | |
184 | ||
185 | /* Write events to next new packet. */ | |
186 | ||
187 | static void | |
188 | ctf_save_next_packet (struct trace_write_handler *handler) | |
189 | { | |
190 | handler->packet_start += (handler->content_size + 4); | |
191 | ctf_save_fseek (handler, handler->packet_start, SEEK_SET); | |
192 | handler->content_size = 0; | |
193 | } | |
194 | ||
195 | /* Write the CTF metadata header. */ | |
196 | ||
197 | static void | |
198 | ctf_save_metadata_header (struct trace_write_handler *handler) | |
199 | { | |
200 | const char metadata_fmt[] = | |
201 | "\ntrace {\n" | |
202 | " major = %u;\n" | |
203 | " minor = %u;\n" | |
204 | " byte_order = %s;\n" /* be or le */ | |
205 | " packet.header := struct {\n" | |
206 | " uint32_t magic;\n" | |
207 | " };\n" | |
208 | "};\n" | |
209 | "\n" | |
210 | "stream {\n" | |
211 | " packet.context := struct {\n" | |
212 | " uint32_t content_size;\n" | |
213 | " uint32_t packet_size;\n" | |
214 | " uint16_t tpnum;\n" | |
215 | " };\n" | |
216 | " event.header := struct {\n" | |
217 | " uint32_t id;\n" | |
218 | " };\n" | |
219 | "};\n"; | |
220 | ||
221 | ctf_save_write_metadata (handler, "/* CTF %d.%d */\n", | |
222 | CTF_SAVE_MAJOR, CTF_SAVE_MINOR); | |
223 | ctf_save_write_metadata (handler, | |
224 | "typealias integer { size = 8; align = 8; " | |
225 | "signed = false; encoding = ascii;}" | |
226 | " := ascii;\n"); | |
227 | ctf_save_write_metadata (handler, | |
228 | "typealias integer { size = 8; align = 8; " | |
229 | "signed = false; }" | |
230 | " := uint8_t;\n"); | |
231 | ctf_save_write_metadata (handler, | |
232 | "typealias integer { size = 16; align = 16;" | |
233 | "signed = false; } := uint16_t;\n"); | |
234 | ctf_save_write_metadata (handler, | |
235 | "typealias integer { size = 32; align = 32;" | |
236 | "signed = false; } := uint32_t;\n"); | |
237 | ctf_save_write_metadata (handler, | |
238 | "typealias integer { size = 64; align = 64;" | |
239 | "signed = false; base = hex;}" | |
240 | " := uint64_t;\n"); | |
393fd4c3 YQ |
241 | ctf_save_write_metadata (handler, |
242 | "typealias integer { size = 32; align = 32;" | |
243 | "signed = true; } := int32_t;\n"); | |
244 | ctf_save_write_metadata (handler, | |
245 | "typealias integer { size = 64; align = 64;" | |
246 | "signed = true; } := int64_t;\n"); | |
247 | ctf_save_write_metadata (handler, | |
248 | "typealias string { encoding = ascii;" | |
249 | " } := chars;\n"); | |
d0353e76 YQ |
250 | ctf_save_write_metadata (handler, "\n"); |
251 | ||
8249a5a9 YQ |
252 | /* Get the byte order of the host and write CTF data in this byte |
253 | order. */ | |
254 | #if WORDS_BIGENDIAN | |
255 | #define HOST_ENDIANNESS "be" | |
256 | #else | |
257 | #define HOST_ENDIANNESS "le" | |
258 | #endif | |
259 | ||
d0353e76 YQ |
260 | ctf_save_write_metadata (handler, metadata_fmt, |
261 | CTF_SAVE_MAJOR, CTF_SAVE_MINOR, | |
8249a5a9 | 262 | HOST_ENDIANNESS); |
d0353e76 YQ |
263 | ctf_save_write_metadata (handler, "\n"); |
264 | } | |
265 | ||
266 | /* CTF trace writer. */ | |
267 | ||
268 | struct ctf_trace_file_writer | |
269 | { | |
270 | struct trace_file_writer base; | |
271 | ||
272 | /* States related to writing CTF trace file. */ | |
273 | struct trace_write_handler tcs; | |
274 | }; | |
275 | ||
276 | /* This is the implementation of trace_file_write_ops method | |
277 | dtor. */ | |
278 | ||
279 | static void | |
280 | ctf_dtor (struct trace_file_writer *self) | |
281 | { | |
282 | struct ctf_trace_file_writer *writer | |
283 | = (struct ctf_trace_file_writer *) self; | |
284 | ||
285 | if (writer->tcs.metadata_fd != NULL) | |
286 | fclose (writer->tcs.metadata_fd); | |
287 | ||
288 | if (writer->tcs.datastream_fd != NULL) | |
289 | fclose (writer->tcs.datastream_fd); | |
290 | ||
291 | } | |
292 | ||
293 | /* This is the implementation of trace_file_write_ops method | |
294 | target_save. */ | |
295 | ||
296 | static int | |
297 | ctf_target_save (struct trace_file_writer *self, | |
298 | const char *dirname) | |
299 | { | |
300 | /* Don't support save trace file to CTF format in the target. */ | |
301 | return 0; | |
302 | } | |
303 | ||
af307d6a | 304 | #ifdef USE_WIN32API |
a4341769 YQ |
305 | #undef mkdir |
306 | #define mkdir(pathname, mode) mkdir (pathname) | |
af307d6a YQ |
307 | #endif |
308 | ||
d0353e76 YQ |
309 | /* This is the implementation of trace_file_write_ops method |
310 | start. It creates the directory DIRNAME, metadata and datastream | |
311 | in the directory. */ | |
312 | ||
313 | static void | |
314 | ctf_start (struct trace_file_writer *self, const char *dirname) | |
315 | { | |
316 | char *file_name; | |
317 | struct cleanup *old_chain; | |
318 | struct ctf_trace_file_writer *writer | |
319 | = (struct ctf_trace_file_writer *) self; | |
320 | int i; | |
840207d8 | 321 | mode_t hmode = S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH; |
d0353e76 YQ |
322 | |
323 | /* Create DIRNAME. */ | |
af307d6a | 324 | if (mkdir (dirname, hmode) && errno != EEXIST) |
d0353e76 YQ |
325 | error (_("Unable to open directory '%s' for saving trace data (%s)"), |
326 | dirname, safe_strerror (errno)); | |
327 | ||
328 | memset (&writer->tcs, '\0', sizeof (writer->tcs)); | |
329 | ||
330 | file_name = xstrprintf ("%s/%s", dirname, CTF_METADATA_NAME); | |
331 | old_chain = make_cleanup (xfree, file_name); | |
332 | ||
333 | writer->tcs.metadata_fd = fopen (file_name, "w"); | |
334 | if (writer->tcs.metadata_fd == NULL) | |
335 | error (_("Unable to open file '%s' for saving trace data (%s)"), | |
336 | file_name, safe_strerror (errno)); | |
337 | do_cleanups (old_chain); | |
338 | ||
339 | ctf_save_metadata_header (&writer->tcs); | |
340 | ||
341 | file_name = xstrprintf ("%s/%s", dirname, CTF_DATASTREAM_NAME); | |
342 | old_chain = make_cleanup (xfree, file_name); | |
343 | writer->tcs.datastream_fd = fopen (file_name, "w"); | |
344 | if (writer->tcs.datastream_fd == NULL) | |
345 | error (_("Unable to open file '%s' for saving trace data (%s)"), | |
346 | file_name, safe_strerror (errno)); | |
347 | do_cleanups (old_chain); | |
348 | } | |
349 | ||
350 | /* This is the implementation of trace_file_write_ops method | |
351 | write_header. Write the types of events on trace variable and | |
352 | frame. */ | |
353 | ||
354 | static void | |
355 | ctf_write_header (struct trace_file_writer *self) | |
356 | { | |
357 | struct ctf_trace_file_writer *writer | |
358 | = (struct ctf_trace_file_writer *) self; | |
359 | ||
360 | ||
361 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
362 | ctf_save_write_metadata (&writer->tcs, | |
363 | "event {\n\tname = \"memory\";\n\tid = %u;\n" | |
364 | "\tfields := struct { \n" | |
365 | "\t\tuint64_t address;\n" | |
366 | "\t\tuint16_t length;\n" | |
367 | "\t\tuint8_t contents[length];\n" | |
368 | "\t};\n" | |
369 | "};\n", CTF_EVENT_ID_MEMORY); | |
370 | ||
371 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
372 | ctf_save_write_metadata (&writer->tcs, | |
373 | "event {\n\tname = \"tsv\";\n\tid = %u;\n" | |
374 | "\tfields := struct { \n" | |
375 | "\t\tuint64_t val;\n" | |
376 | "\t\tuint32_t num;\n" | |
377 | "\t};\n" | |
378 | "};\n", CTF_EVENT_ID_TSV); | |
379 | ||
380 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
381 | ctf_save_write_metadata (&writer->tcs, | |
382 | "event {\n\tname = \"frame\";\n\tid = %u;\n" | |
383 | "\tfields := struct { \n" | |
384 | "\t};\n" | |
385 | "};\n", CTF_EVENT_ID_FRAME); | |
386 | ||
393fd4c3 YQ |
387 | ctf_save_write_metadata (&writer->tcs, "\n"); |
388 | ctf_save_write_metadata (&writer->tcs, | |
389 | "event {\n\tname = \"tsv_def\";\n" | |
390 | "\tid = %u;\n\tfields := struct { \n" | |
391 | "\t\tint64_t initial_value;\n" | |
392 | "\t\tint32_t number;\n" | |
393 | "\t\tint32_t builtin;\n" | |
394 | "\t\tchars name;\n" | |
395 | "\t};\n" | |
396 | "};\n", CTF_EVENT_ID_TSV_DEF); | |
397 | ||
398 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
399 | ctf_save_write_metadata (&writer->tcs, | |
400 | "event {\n\tname = \"tp_def\";\n" | |
401 | "\tid = %u;\n\tfields := struct { \n" | |
402 | "\t\tuint64_t addr;\n" | |
403 | "\t\tuint64_t traceframe_usage;\n" | |
404 | "\t\tint32_t number;\n" | |
405 | "\t\tint32_t enabled;\n" | |
406 | "\t\tint32_t step;\n" | |
407 | "\t\tint32_t pass;\n" | |
408 | "\t\tint32_t hit_count;\n" | |
409 | "\t\tint32_t type;\n" | |
410 | "\t\tchars cond;\n" | |
411 | ||
412 | "\t\tuint32_t action_num;\n" | |
413 | "\t\tchars actions[action_num];\n" | |
414 | ||
415 | "\t\tuint32_t step_action_num;\n" | |
416 | "\t\tchars step_actions[step_action_num];\n" | |
417 | ||
418 | "\t\tchars at_string;\n" | |
419 | "\t\tchars cond_string;\n" | |
420 | ||
421 | "\t\tuint32_t cmd_num;\n" | |
422 | "\t\tchars cmd_strings[cmd_num];\n" | |
423 | "\t};\n" | |
424 | "};\n", CTF_EVENT_ID_TP_DEF); | |
425 | ||
d0353e76 YQ |
426 | gdb_assert (writer->tcs.content_size == 0); |
427 | gdb_assert (writer->tcs.packet_start == 0); | |
393fd4c3 YQ |
428 | |
429 | /* Create a new packet to contain this event. */ | |
430 | self->ops->frame_ops->start (self, 0); | |
d0353e76 YQ |
431 | } |
432 | ||
433 | /* This is the implementation of trace_file_write_ops method | |
434 | write_regblock_type. Write the type of register event in | |
435 | metadata. */ | |
436 | ||
437 | static void | |
438 | ctf_write_regblock_type (struct trace_file_writer *self, int size) | |
439 | { | |
440 | struct ctf_trace_file_writer *writer | |
441 | = (struct ctf_trace_file_writer *) self; | |
442 | ||
443 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
444 | ||
445 | ctf_save_write_metadata (&writer->tcs, | |
446 | "event {\n\tname = \"register\";\n\tid = %u;\n" | |
447 | "\tfields := struct { \n" | |
448 | "\t\tascii contents[%d];\n" | |
449 | "\t};\n" | |
450 | "};\n", | |
451 | CTF_EVENT_ID_REGISTER, size); | |
452 | } | |
453 | ||
454 | /* This is the implementation of trace_file_write_ops method | |
455 | write_status. */ | |
456 | ||
457 | static void | |
458 | ctf_write_status (struct trace_file_writer *self, | |
459 | struct trace_status *ts) | |
460 | { | |
393fd4c3 YQ |
461 | struct ctf_trace_file_writer *writer |
462 | = (struct ctf_trace_file_writer *) self; | |
463 | uint32_t id; | |
464 | int32_t int32; | |
465 | ||
466 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
467 | ctf_save_write_metadata (&writer->tcs, | |
468 | "event {\n\tname = \"status\";\n\tid = %u;\n" | |
469 | "\tfields := struct { \n" | |
470 | "\t\tint32_t stop_reason;\n" | |
471 | "\t\tint32_t stopping_tracepoint;\n" | |
472 | "\t\tint32_t traceframe_count;\n" | |
473 | "\t\tint32_t traceframes_created;\n" | |
474 | "\t\tint32_t buffer_free;\n" | |
475 | "\t\tint32_t buffer_size;\n" | |
476 | "\t\tint32_t disconnected_tracing;\n" | |
477 | "\t\tint32_t circular_buffer;\n" | |
478 | "\t};\n" | |
479 | "};\n", | |
480 | CTF_EVENT_ID_STATUS); | |
481 | ||
482 | id = CTF_EVENT_ID_STATUS; | |
483 | /* Event Id. */ | |
484 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
485 | ||
486 | ctf_save_write_int32 (&writer->tcs, ts->stop_reason); | |
487 | ctf_save_write_int32 (&writer->tcs, ts->stopping_tracepoint); | |
488 | ctf_save_write_int32 (&writer->tcs, ts->traceframe_count); | |
489 | ctf_save_write_int32 (&writer->tcs, ts->traceframes_created); | |
490 | ctf_save_write_int32 (&writer->tcs, ts->buffer_free); | |
491 | ctf_save_write_int32 (&writer->tcs, ts->buffer_size); | |
492 | ctf_save_write_int32 (&writer->tcs, ts->disconnected_tracing); | |
493 | ctf_save_write_int32 (&writer->tcs, ts->circular_buffer); | |
d0353e76 YQ |
494 | } |
495 | ||
496 | /* This is the implementation of trace_file_write_ops method | |
497 | write_uploaded_tsv. */ | |
498 | ||
499 | static void | |
500 | ctf_write_uploaded_tsv (struct trace_file_writer *self, | |
501 | struct uploaded_tsv *tsv) | |
502 | { | |
393fd4c3 YQ |
503 | struct ctf_trace_file_writer *writer |
504 | = (struct ctf_trace_file_writer *) self; | |
505 | int32_t int32; | |
506 | int64_t int64; | |
507 | unsigned int len; | |
508 | const gdb_byte zero = 0; | |
509 | ||
510 | /* Event Id. */ | |
511 | int32 = CTF_EVENT_ID_TSV_DEF; | |
512 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int32, 4, 4); | |
513 | ||
514 | /* initial_value */ | |
515 | int64 = tsv->initial_value; | |
516 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int64, 8, 8); | |
517 | ||
518 | /* number */ | |
519 | ctf_save_write_int32 (&writer->tcs, tsv->number); | |
520 | ||
521 | /* builtin */ | |
522 | ctf_save_write_int32 (&writer->tcs, tsv->builtin); | |
523 | ||
524 | /* name */ | |
525 | if (tsv->name != NULL) | |
a398505b PA |
526 | ctf_save_write (&writer->tcs, (gdb_byte *) tsv->name, |
527 | strlen (tsv->name)); | |
393fd4c3 | 528 | ctf_save_write (&writer->tcs, &zero, 1); |
d0353e76 YQ |
529 | } |
530 | ||
531 | /* This is the implementation of trace_file_write_ops method | |
532 | write_uploaded_tp. */ | |
533 | ||
534 | static void | |
535 | ctf_write_uploaded_tp (struct trace_file_writer *self, | |
536 | struct uploaded_tp *tp) | |
537 | { | |
393fd4c3 YQ |
538 | struct ctf_trace_file_writer *writer |
539 | = (struct ctf_trace_file_writer *) self; | |
540 | int32_t int32; | |
541 | int64_t int64; | |
542 | uint32_t u32; | |
543 | const gdb_byte zero = 0; | |
544 | int a; | |
545 | char *act; | |
546 | ||
547 | /* Event Id. */ | |
548 | int32 = CTF_EVENT_ID_TP_DEF; | |
549 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int32, 4, 4); | |
550 | ||
551 | /* address */ | |
552 | int64 = tp->addr; | |
553 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int64, 8, 8); | |
554 | ||
555 | /* traceframe_usage */ | |
556 | int64 = tp->traceframe_usage; | |
557 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int64, 8, 8); | |
558 | ||
559 | /* number */ | |
560 | ctf_save_write_int32 (&writer->tcs, tp->number); | |
561 | ||
562 | /* enabled */ | |
563 | ctf_save_write_int32 (&writer->tcs, tp->enabled); | |
564 | ||
565 | /* step */ | |
566 | ctf_save_write_int32 (&writer->tcs, tp->step); | |
567 | ||
568 | /* pass */ | |
569 | ctf_save_write_int32 (&writer->tcs, tp->pass); | |
570 | ||
571 | /* hit_count */ | |
572 | ctf_save_write_int32 (&writer->tcs, tp->hit_count); | |
573 | ||
574 | /* type */ | |
575 | ctf_save_write_int32 (&writer->tcs, tp->type); | |
576 | ||
577 | /* condition */ | |
578 | if (tp->cond != NULL) | |
a398505b | 579 | ctf_save_write (&writer->tcs, (gdb_byte *) tp->cond, strlen (tp->cond)); |
393fd4c3 YQ |
580 | ctf_save_write (&writer->tcs, &zero, 1); |
581 | ||
582 | /* actions */ | |
583 | u32 = VEC_length (char_ptr, tp->actions); | |
584 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &u32, 4, 4); | |
585 | for (a = 0; VEC_iterate (char_ptr, tp->actions, a, act); ++a) | |
a398505b | 586 | ctf_save_write (&writer->tcs, (gdb_byte *) act, strlen (act) + 1); |
393fd4c3 YQ |
587 | |
588 | /* step_actions */ | |
589 | u32 = VEC_length (char_ptr, tp->step_actions); | |
590 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &u32, 4, 4); | |
591 | for (a = 0; VEC_iterate (char_ptr, tp->step_actions, a, act); ++a) | |
a398505b | 592 | ctf_save_write (&writer->tcs, (gdb_byte *) act, strlen (act) + 1); |
393fd4c3 YQ |
593 | |
594 | /* at_string */ | |
595 | if (tp->at_string != NULL) | |
a398505b | 596 | ctf_save_write (&writer->tcs, (gdb_byte *) tp->at_string, |
393fd4c3 YQ |
597 | strlen (tp->at_string)); |
598 | ctf_save_write (&writer->tcs, &zero, 1); | |
599 | ||
600 | /* cond_string */ | |
601 | if (tp->cond_string != NULL) | |
a398505b | 602 | ctf_save_write (&writer->tcs, (gdb_byte *) tp->cond_string, |
393fd4c3 YQ |
603 | strlen (tp->cond_string)); |
604 | ctf_save_write (&writer->tcs, &zero, 1); | |
605 | ||
606 | /* cmd_strings */ | |
607 | u32 = VEC_length (char_ptr, tp->cmd_strings); | |
608 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &u32, 4, 4); | |
609 | for (a = 0; VEC_iterate (char_ptr, tp->cmd_strings, a, act); ++a) | |
a398505b | 610 | ctf_save_write (&writer->tcs, (gdb_byte *) act, strlen (act) + 1); |
393fd4c3 | 611 | |
d0353e76 YQ |
612 | } |
613 | ||
614 | /* This is the implementation of trace_file_write_ops method | |
615 | write_definition_end. */ | |
616 | ||
617 | static void | |
618 | ctf_write_definition_end (struct trace_file_writer *self) | |
619 | { | |
393fd4c3 YQ |
620 | struct ctf_trace_file_writer *writer |
621 | = (struct ctf_trace_file_writer *) self; | |
622 | ||
623 | self->ops->frame_ops->end (self); | |
d0353e76 YQ |
624 | } |
625 | ||
626 | /* The minimal file size of data stream. It is required by | |
627 | babeltrace. */ | |
628 | ||
629 | #define CTF_FILE_MIN_SIZE 4096 | |
630 | ||
631 | /* This is the implementation of trace_file_write_ops method | |
632 | end. */ | |
633 | ||
634 | static void | |
635 | ctf_end (struct trace_file_writer *self) | |
636 | { | |
637 | struct ctf_trace_file_writer *writer = (struct ctf_trace_file_writer *) self; | |
638 | ||
639 | gdb_assert (writer->tcs.content_size == 0); | |
640 | /* The babeltrace requires or assumes that the size of datastream | |
641 | file is greater than 4096 bytes. If we don't generate enough | |
642 | packets and events, create a fake packet which has zero event, | |
643 | to use up the space. */ | |
644 | if (writer->tcs.packet_start < CTF_FILE_MIN_SIZE) | |
645 | { | |
646 | uint32_t u32; | |
647 | ||
648 | /* magic. */ | |
649 | u32 = CTF_MAGIC; | |
650 | ctf_save_write_uint32 (&writer->tcs, u32); | |
651 | ||
652 | /* content_size. */ | |
653 | u32 = 0; | |
654 | ctf_save_write_uint32 (&writer->tcs, u32); | |
655 | ||
656 | /* packet_size. */ | |
657 | u32 = 12; | |
658 | if (writer->tcs.packet_start + u32 < CTF_FILE_MIN_SIZE) | |
659 | u32 = CTF_FILE_MIN_SIZE - writer->tcs.packet_start; | |
660 | ||
661 | u32 *= TARGET_CHAR_BIT; | |
662 | ctf_save_write_uint32 (&writer->tcs, u32); | |
663 | ||
664 | /* tpnum. */ | |
665 | u32 = 0; | |
666 | ctf_save_write (&writer->tcs, (gdb_byte *) &u32, 2); | |
667 | ||
668 | /* Enlarge the file to CTF_FILE_MIN_SIZE is it is still less | |
669 | than that. */ | |
670 | if (CTF_FILE_MIN_SIZE | |
671 | > (writer->tcs.packet_start + writer->tcs.content_size)) | |
672 | { | |
673 | gdb_byte b = 0; | |
674 | ||
675 | /* Fake the content size to avoid assertion failure in | |
676 | ctf_save_fseek. */ | |
677 | writer->tcs.content_size = (CTF_FILE_MIN_SIZE | |
678 | - 1 - writer->tcs.packet_start); | |
679 | ctf_save_fseek (&writer->tcs, CTF_FILE_MIN_SIZE - 1, | |
680 | SEEK_SET); | |
681 | ctf_save_write (&writer->tcs, &b, 1); | |
682 | } | |
683 | } | |
684 | } | |
685 | ||
686 | /* This is the implementation of trace_frame_write_ops method | |
687 | start. */ | |
688 | ||
689 | static void | |
690 | ctf_write_frame_start (struct trace_file_writer *self, uint16_t tpnum) | |
691 | { | |
692 | struct ctf_trace_file_writer *writer | |
693 | = (struct ctf_trace_file_writer *) self; | |
694 | uint32_t id = CTF_EVENT_ID_FRAME; | |
695 | uint32_t u32; | |
696 | ||
697 | /* Step 1: Write packet context. */ | |
698 | /* magic. */ | |
699 | u32 = CTF_MAGIC; | |
700 | ctf_save_write_uint32 (&writer->tcs, u32); | |
701 | /* content_size and packet_size.. We still don't know the value, | |
702 | write it later. */ | |
703 | ctf_save_fseek (&writer->tcs, 4, SEEK_CUR); | |
704 | ctf_save_fseek (&writer->tcs, 4, SEEK_CUR); | |
705 | /* Tracepoint number. */ | |
706 | ctf_save_write (&writer->tcs, (gdb_byte *) &tpnum, 2); | |
707 | ||
708 | /* Step 2: Write event "frame". */ | |
709 | /* Event Id. */ | |
710 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
711 | } | |
712 | ||
713 | /* This is the implementation of trace_frame_write_ops method | |
714 | write_r_block. */ | |
715 | ||
716 | static void | |
717 | ctf_write_frame_r_block (struct trace_file_writer *self, | |
718 | gdb_byte *buf, int32_t size) | |
719 | { | |
720 | struct ctf_trace_file_writer *writer | |
721 | = (struct ctf_trace_file_writer *) self; | |
722 | uint32_t id = CTF_EVENT_ID_REGISTER; | |
723 | ||
724 | /* Event Id. */ | |
725 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
726 | ||
727 | /* array contents. */ | |
728 | ctf_save_align_write (&writer->tcs, buf, size, 1); | |
729 | } | |
730 | ||
731 | /* This is the implementation of trace_frame_write_ops method | |
732 | write_m_block_header. */ | |
733 | ||
734 | static void | |
735 | ctf_write_frame_m_block_header (struct trace_file_writer *self, | |
736 | uint64_t addr, uint16_t length) | |
737 | { | |
738 | struct ctf_trace_file_writer *writer | |
739 | = (struct ctf_trace_file_writer *) self; | |
740 | uint32_t event_id = CTF_EVENT_ID_MEMORY; | |
741 | ||
742 | /* Event Id. */ | |
743 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &event_id, 4, 4); | |
744 | ||
745 | /* Address. */ | |
746 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &addr, 8, 8); | |
747 | ||
748 | /* Length. */ | |
749 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &length, 2, 2); | |
750 | } | |
751 | ||
752 | /* This is the implementation of trace_frame_write_ops method | |
753 | write_m_block_memory. */ | |
754 | ||
755 | static void | |
756 | ctf_write_frame_m_block_memory (struct trace_file_writer *self, | |
757 | gdb_byte *buf, uint16_t length) | |
758 | { | |
759 | struct ctf_trace_file_writer *writer | |
760 | = (struct ctf_trace_file_writer *) self; | |
761 | ||
762 | /* Contents. */ | |
763 | ctf_save_align_write (&writer->tcs, (gdb_byte *) buf, length, 1); | |
764 | } | |
765 | ||
766 | /* This is the implementation of trace_frame_write_ops method | |
767 | write_v_block. */ | |
768 | ||
769 | static void | |
770 | ctf_write_frame_v_block (struct trace_file_writer *self, | |
771 | int32_t num, uint64_t val) | |
772 | { | |
773 | struct ctf_trace_file_writer *writer | |
774 | = (struct ctf_trace_file_writer *) self; | |
775 | uint32_t id = CTF_EVENT_ID_TSV; | |
776 | ||
777 | /* Event Id. */ | |
778 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
779 | ||
780 | /* val. */ | |
781 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &val, 8, 8); | |
782 | /* num. */ | |
783 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &num, 4, 4); | |
784 | } | |
785 | ||
786 | /* This is the implementation of trace_frame_write_ops method | |
787 | end. */ | |
788 | ||
789 | static void | |
790 | ctf_write_frame_end (struct trace_file_writer *self) | |
791 | { | |
792 | struct ctf_trace_file_writer *writer | |
793 | = (struct ctf_trace_file_writer *) self; | |
794 | uint32_t u32; | |
795 | uint32_t t; | |
796 | ||
797 | /* Write the content size to packet header. */ | |
798 | ctf_save_fseek (&writer->tcs, writer->tcs.packet_start + 4, | |
799 | SEEK_SET); | |
800 | u32 = writer->tcs.content_size * TARGET_CHAR_BIT; | |
801 | ||
802 | t = writer->tcs.content_size; | |
803 | ctf_save_write_uint32 (&writer->tcs, u32); | |
804 | ||
805 | /* Write the packet size. */ | |
806 | u32 += 4 * TARGET_CHAR_BIT; | |
807 | ctf_save_write_uint32 (&writer->tcs, u32); | |
808 | ||
809 | writer->tcs.content_size = t; | |
810 | ||
811 | /* Write zero at the end of the packet. */ | |
812 | ctf_save_fseek (&writer->tcs, writer->tcs.packet_start + t, | |
813 | SEEK_SET); | |
814 | u32 = 0; | |
815 | ctf_save_write_uint32 (&writer->tcs, u32); | |
816 | writer->tcs.content_size = t; | |
817 | ||
818 | ctf_save_next_packet (&writer->tcs); | |
819 | } | |
820 | ||
821 | /* Operations to write various types of trace frames into CTF | |
822 | format. */ | |
823 | ||
824 | static const struct trace_frame_write_ops ctf_write_frame_ops = | |
825 | { | |
826 | ctf_write_frame_start, | |
827 | ctf_write_frame_r_block, | |
828 | ctf_write_frame_m_block_header, | |
829 | ctf_write_frame_m_block_memory, | |
830 | ctf_write_frame_v_block, | |
831 | ctf_write_frame_end, | |
832 | }; | |
833 | ||
834 | /* Operations to write trace buffers into CTF format. */ | |
835 | ||
836 | static const struct trace_file_write_ops ctf_write_ops = | |
837 | { | |
838 | ctf_dtor, | |
839 | ctf_target_save, | |
840 | ctf_start, | |
841 | ctf_write_header, | |
842 | ctf_write_regblock_type, | |
843 | ctf_write_status, | |
844 | ctf_write_uploaded_tsv, | |
845 | ctf_write_uploaded_tp, | |
846 | ctf_write_definition_end, | |
847 | NULL, | |
848 | &ctf_write_frame_ops, | |
849 | ctf_end, | |
850 | }; | |
851 | ||
852 | /* Return a trace writer for CTF format. */ | |
853 | ||
854 | struct trace_file_writer * | |
855 | ctf_trace_file_writer_new (void) | |
856 | { | |
857 | struct ctf_trace_file_writer *writer | |
858 | = xmalloc (sizeof (struct ctf_trace_file_writer)); | |
859 | ||
860 | writer->base.ops = &ctf_write_ops; | |
861 | ||
862 | return (struct trace_file_writer *) writer; | |
863 | } | |
393fd4c3 YQ |
864 | |
865 | #if HAVE_LIBBABELTRACE | |
866 | /* Use libbabeltrace to read CTF data. The libbabeltrace provides | |
867 | iterator to iterate over each event in CTF data and APIs to get | |
868 | details of event and packet, so it is very convenient to use | |
869 | libbabeltrace to access events in CTF. */ | |
870 | ||
871 | #include <babeltrace/babeltrace.h> | |
872 | #include <babeltrace/ctf/events.h> | |
873 | #include <babeltrace/ctf/iterator.h> | |
874 | ||
875 | /* The struct pointer for current CTF directory. */ | |
614d5099 | 876 | static int handle_id = -1; |
393fd4c3 YQ |
877 | static struct bt_context *ctx = NULL; |
878 | static struct bt_ctf_iter *ctf_iter = NULL; | |
879 | /* The position of the first packet containing trace frame. */ | |
880 | static struct bt_iter_pos *start_pos; | |
881 | ||
882 | /* The name of CTF directory. */ | |
883 | static char *trace_dirname; | |
884 | ||
885 | static struct target_ops ctf_ops; | |
886 | ||
887 | /* Destroy ctf iterator and context. */ | |
888 | ||
889 | static void | |
890 | ctf_destroy (void) | |
891 | { | |
892 | if (ctf_iter != NULL) | |
893 | { | |
894 | bt_ctf_iter_destroy (ctf_iter); | |
895 | ctf_iter = NULL; | |
896 | } | |
897 | if (ctx != NULL) | |
898 | { | |
899 | bt_context_put (ctx); | |
900 | ctx = NULL; | |
901 | } | |
902 | } | |
903 | ||
904 | /* Open CTF trace data in DIRNAME. */ | |
905 | ||
906 | static void | |
014f9477 | 907 | ctf_open_dir (const char *dirname) |
393fd4c3 | 908 | { |
393fd4c3 YQ |
909 | struct bt_iter_pos begin_pos; |
910 | struct bt_iter_pos *pos; | |
614d5099 YQ |
911 | unsigned int count, i; |
912 | struct bt_ctf_event_decl * const *list; | |
393fd4c3 YQ |
913 | |
914 | ctx = bt_context_create (); | |
915 | if (ctx == NULL) | |
916 | error (_("Unable to create bt_context")); | |
614d5099 YQ |
917 | handle_id = bt_context_add_trace (ctx, dirname, "ctf", NULL, NULL, NULL); |
918 | if (handle_id < 0) | |
393fd4c3 YQ |
919 | { |
920 | ctf_destroy (); | |
921 | error (_("Unable to use libbabeltrace on directory \"%s\""), | |
922 | dirname); | |
923 | } | |
924 | ||
925 | begin_pos.type = BT_SEEK_BEGIN; | |
926 | ctf_iter = bt_ctf_iter_create (ctx, &begin_pos, NULL); | |
927 | if (ctf_iter == NULL) | |
928 | { | |
929 | ctf_destroy (); | |
930 | error (_("Unable to create bt_iterator")); | |
931 | } | |
932 | ||
614d5099 YQ |
933 | /* Look for the declaration of register block. Get the length of |
934 | array "contents" to set trace_regblock_size. */ | |
393fd4c3 | 935 | |
614d5099 YQ |
936 | bt_ctf_get_event_decl_list (handle_id, ctx, &list, &count); |
937 | for (i = 0; i < count; i++) | |
938 | if (strcmp ("register", bt_ctf_get_decl_event_name (list[i])) == 0) | |
939 | { | |
940 | unsigned int j; | |
941 | const struct bt_ctf_field_decl * const *field_list; | |
942 | const struct bt_declaration *decl; | |
393fd4c3 | 943 | |
614d5099 YQ |
944 | bt_ctf_get_decl_fields (list[i], BT_EVENT_FIELDS, &field_list, |
945 | &count); | |
393fd4c3 | 946 | |
614d5099 YQ |
947 | gdb_assert (count == 1); |
948 | gdb_assert (0 == strcmp ("contents", | |
949 | bt_ctf_get_decl_field_name (field_list[0]))); | |
950 | decl = bt_ctf_get_decl_from_field_decl (field_list[0]); | |
951 | trace_regblock_size = bt_ctf_get_array_len (decl); | |
393fd4c3 | 952 | |
393fd4c3 | 953 | break; |
614d5099 | 954 | } |
393fd4c3 YQ |
955 | } |
956 | ||
957 | #define SET_INT32_FIELD(EVENT, SCOPE, VAR, FIELD) \ | |
958 | (VAR)->FIELD = (int) bt_ctf_get_int64 (bt_ctf_get_field ((EVENT), \ | |
959 | (SCOPE), \ | |
960 | #FIELD)) | |
961 | ||
962 | /* EVENT is the "status" event and TS is filled in. */ | |
963 | ||
964 | static void | |
965 | ctf_read_status (struct bt_ctf_event *event, struct trace_status *ts) | |
966 | { | |
967 | const struct bt_definition *scope | |
968 | = bt_ctf_get_top_level_scope (event, BT_EVENT_FIELDS); | |
969 | ||
970 | SET_INT32_FIELD (event, scope, ts, stop_reason); | |
971 | SET_INT32_FIELD (event, scope, ts, stopping_tracepoint); | |
972 | SET_INT32_FIELD (event, scope, ts, traceframe_count); | |
973 | SET_INT32_FIELD (event, scope, ts, traceframes_created); | |
974 | SET_INT32_FIELD (event, scope, ts, buffer_free); | |
975 | SET_INT32_FIELD (event, scope, ts, buffer_size); | |
976 | SET_INT32_FIELD (event, scope, ts, disconnected_tracing); | |
977 | SET_INT32_FIELD (event, scope, ts, circular_buffer); | |
978 | ||
979 | bt_iter_next (bt_ctf_get_iter (ctf_iter)); | |
980 | } | |
981 | ||
982 | /* Read the events "tsv_def" one by one, extract its contents and fill | |
983 | in the list UPLOADED_TSVS. */ | |
984 | ||
985 | static void | |
986 | ctf_read_tsv (struct uploaded_tsv **uploaded_tsvs) | |
987 | { | |
988 | gdb_assert (ctf_iter != NULL); | |
989 | ||
990 | while (1) | |
991 | { | |
992 | struct bt_ctf_event *event; | |
993 | const struct bt_definition *scope; | |
994 | const struct bt_definition *def; | |
995 | uint32_t event_id; | |
996 | struct uploaded_tsv *utsv = NULL; | |
997 | ||
998 | event = bt_ctf_iter_read_event (ctf_iter); | |
999 | scope = bt_ctf_get_top_level_scope (event, | |
1000 | BT_STREAM_EVENT_HEADER); | |
1001 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, | |
1002 | "id")); | |
1003 | if (event_id != CTF_EVENT_ID_TSV_DEF) | |
1004 | break; | |
1005 | ||
1006 | scope = bt_ctf_get_top_level_scope (event, | |
1007 | BT_EVENT_FIELDS); | |
1008 | ||
1009 | def = bt_ctf_get_field (event, scope, "number"); | |
1010 | utsv = get_uploaded_tsv ((int32_t) bt_ctf_get_int64 (def), | |
1011 | uploaded_tsvs); | |
1012 | ||
1013 | def = bt_ctf_get_field (event, scope, "builtin"); | |
1014 | utsv->builtin = (int32_t) bt_ctf_get_int64 (def); | |
1015 | def = bt_ctf_get_field (event, scope, "initial_value"); | |
1016 | utsv->initial_value = bt_ctf_get_int64 (def); | |
1017 | ||
1018 | def = bt_ctf_get_field (event, scope, "name"); | |
1019 | utsv->name = xstrdup (bt_ctf_get_string (def)); | |
1020 | ||
1021 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1022 | break; | |
1023 | } | |
1024 | ||
1025 | } | |
1026 | ||
1027 | /* Read the value of element whose index is NUM from CTF and write it | |
1028 | to the corresponding VAR->ARRAY. */ | |
1029 | ||
1030 | #define SET_ARRAY_FIELD(EVENT, SCOPE, VAR, NUM, ARRAY) \ | |
1031 | do \ | |
1032 | { \ | |
1033 | uint32_t u32, i; \ | |
1034 | const struct bt_definition *def; \ | |
1035 | \ | |
1036 | u32 = (uint32_t) bt_ctf_get_uint64 (bt_ctf_get_field ((EVENT), \ | |
1037 | (SCOPE), \ | |
1038 | #NUM)); \ | |
1039 | def = bt_ctf_get_field ((EVENT), (SCOPE), #ARRAY); \ | |
1040 | for (i = 0; i < u32; i++) \ | |
1041 | { \ | |
1042 | const struct bt_definition *element \ | |
1043 | = bt_ctf_get_index ((EVENT), def, i); \ | |
1044 | \ | |
1045 | VEC_safe_push (char_ptr, (VAR)->ARRAY, \ | |
1046 | xstrdup (bt_ctf_get_string (element))); \ | |
1047 | } \ | |
1048 | } \ | |
1049 | while (0) | |
1050 | ||
1051 | /* Read a string from CTF and set VAR->FIELD. If the length of string | |
1052 | is zero, set VAR->FIELD to NULL. */ | |
1053 | ||
1054 | #define SET_STRING_FIELD(EVENT, SCOPE, VAR, FIELD) \ | |
1055 | do \ | |
1056 | { \ | |
1057 | const char *p = bt_ctf_get_string (bt_ctf_get_field ((EVENT), \ | |
1058 | (SCOPE), \ | |
1059 | #FIELD)); \ | |
1060 | \ | |
1061 | if (strlen (p) > 0) \ | |
1062 | (VAR)->FIELD = xstrdup (p); \ | |
1063 | else \ | |
1064 | (VAR)->FIELD = NULL; \ | |
1065 | } \ | |
1066 | while (0) | |
1067 | ||
1068 | /* Read the events "tp_def" one by one, extract its contents and fill | |
1069 | in the list UPLOADED_TPS. */ | |
1070 | ||
1071 | static void | |
1072 | ctf_read_tp (struct uploaded_tp **uploaded_tps) | |
1073 | { | |
1074 | gdb_assert (ctf_iter != NULL); | |
1075 | ||
1076 | while (1) | |
1077 | { | |
1078 | struct bt_ctf_event *event; | |
1079 | const struct bt_definition *scope; | |
1080 | uint32_t u32; | |
1081 | int32_t int32; | |
1082 | uint64_t u64; | |
1083 | struct uploaded_tp *utp = NULL; | |
1084 | ||
1085 | event = bt_ctf_iter_read_event (ctf_iter); | |
1086 | scope = bt_ctf_get_top_level_scope (event, | |
1087 | BT_STREAM_EVENT_HEADER); | |
1088 | u32 = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, | |
1089 | "id")); | |
1090 | if (u32 != CTF_EVENT_ID_TP_DEF) | |
1091 | break; | |
1092 | ||
1093 | scope = bt_ctf_get_top_level_scope (event, | |
1094 | BT_EVENT_FIELDS); | |
1095 | int32 = (int32_t) bt_ctf_get_int64 (bt_ctf_get_field (event, | |
1096 | scope, | |
1097 | "number")); | |
1098 | u64 = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, | |
1099 | "addr")); | |
1100 | utp = get_uploaded_tp (int32, u64, uploaded_tps); | |
1101 | ||
1102 | SET_INT32_FIELD (event, scope, utp, enabled); | |
1103 | SET_INT32_FIELD (event, scope, utp, step); | |
1104 | SET_INT32_FIELD (event, scope, utp, pass); | |
1105 | SET_INT32_FIELD (event, scope, utp, hit_count); | |
1106 | SET_INT32_FIELD (event, scope, utp, type); | |
1107 | ||
1108 | /* Read 'cmd_strings'. */ | |
1109 | SET_ARRAY_FIELD (event, scope, utp, cmd_num, cmd_strings); | |
1110 | /* Read 'actions'. */ | |
1111 | SET_ARRAY_FIELD (event, scope, utp, action_num, actions); | |
1112 | /* Read 'step_actions'. */ | |
1113 | SET_ARRAY_FIELD (event, scope, utp, step_action_num, | |
1114 | step_actions); | |
1115 | ||
1116 | SET_STRING_FIELD(event, scope, utp, at_string); | |
1117 | SET_STRING_FIELD(event, scope, utp, cond_string); | |
1118 | ||
1119 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1120 | break; | |
1121 | } | |
1122 | } | |
1123 | ||
1124 | /* This is the implementation of target_ops method to_open. Open CTF | |
1125 | trace data, read trace status, trace state variables and tracepoint | |
1126 | definitions from the first packet. Set the start position at the | |
1127 | second packet which contains events on trace blocks. */ | |
1128 | ||
1129 | static void | |
014f9477 | 1130 | ctf_open (const char *dirname, int from_tty) |
393fd4c3 YQ |
1131 | { |
1132 | struct bt_ctf_event *event; | |
1133 | uint32_t event_id; | |
1134 | const struct bt_definition *scope; | |
1135 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
1136 | struct uploaded_tp *uploaded_tps = NULL; | |
1137 | ||
1138 | if (!dirname) | |
1139 | error (_("No CTF directory specified.")); | |
1140 | ||
1141 | ctf_open_dir (dirname); | |
1142 | ||
1143 | target_preopen (from_tty); | |
1144 | ||
1145 | /* Skip the first packet which about the trace status. The first | |
1146 | event is "frame". */ | |
1147 | event = bt_ctf_iter_read_event (ctf_iter); | |
1148 | scope = bt_ctf_get_top_level_scope (event, BT_STREAM_EVENT_HEADER); | |
1149 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "id")); | |
1150 | if (event_id != CTF_EVENT_ID_FRAME) | |
1151 | error (_("Wrong event id of the first event")); | |
1152 | /* The second event is "status". */ | |
1153 | bt_iter_next (bt_ctf_get_iter (ctf_iter)); | |
1154 | event = bt_ctf_iter_read_event (ctf_iter); | |
1155 | scope = bt_ctf_get_top_level_scope (event, BT_STREAM_EVENT_HEADER); | |
1156 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "id")); | |
1157 | if (event_id != CTF_EVENT_ID_STATUS) | |
1158 | error (_("Wrong event id of the second event")); | |
1159 | ctf_read_status (event, current_trace_status ()); | |
1160 | ||
1161 | ctf_read_tsv (&uploaded_tsvs); | |
1162 | ||
1163 | ctf_read_tp (&uploaded_tps); | |
1164 | ||
1165 | event = bt_ctf_iter_read_event (ctf_iter); | |
1166 | /* EVENT can be NULL if we've already gone to the end of stream of | |
1167 | events. */ | |
1168 | if (event != NULL) | |
1169 | { | |
1170 | scope = bt_ctf_get_top_level_scope (event, | |
1171 | BT_STREAM_EVENT_HEADER); | |
1172 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, | |
1173 | scope, "id")); | |
1174 | if (event_id != CTF_EVENT_ID_FRAME) | |
1175 | error (_("Wrong event id of the first event of the second packet")); | |
1176 | } | |
1177 | ||
1178 | start_pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1179 | gdb_assert (start_pos->type == BT_SEEK_RESTORE); | |
1180 | ||
1181 | trace_dirname = xstrdup (dirname); | |
1182 | push_target (&ctf_ops); | |
1183 | ||
de7b2893 YQ |
1184 | inferior_appeared (current_inferior (), CTF_PID); |
1185 | inferior_ptid = pid_to_ptid (CTF_PID); | |
1186 | add_thread_silent (inferior_ptid); | |
1187 | ||
393fd4c3 YQ |
1188 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
1189 | merge_uploaded_tracepoints (&uploaded_tps); | |
5723a6fd YQ |
1190 | |
1191 | post_create_inferior (&ctf_ops, from_tty); | |
393fd4c3 YQ |
1192 | } |
1193 | ||
1194 | /* This is the implementation of target_ops method to_close. Destroy | |
1195 | CTF iterator and context. */ | |
1196 | ||
1197 | static void | |
de90e03d | 1198 | ctf_close (struct target_ops *self) |
393fd4c3 | 1199 | { |
de7b2893 YQ |
1200 | int pid; |
1201 | ||
393fd4c3 YQ |
1202 | ctf_destroy (); |
1203 | xfree (trace_dirname); | |
1204 | trace_dirname = NULL; | |
aef525cb | 1205 | |
de7b2893 YQ |
1206 | pid = ptid_get_pid (inferior_ptid); |
1207 | inferior_ptid = null_ptid; /* Avoid confusion from thread stuff. */ | |
1208 | exit_inferior_silent (pid); | |
1209 | ||
aef525cb | 1210 | trace_reset_local_state (); |
393fd4c3 YQ |
1211 | } |
1212 | ||
1213 | /* This is the implementation of target_ops method to_files_info. | |
1214 | Print the directory name of CTF trace data. */ | |
1215 | ||
1216 | static void | |
1217 | ctf_files_info (struct target_ops *t) | |
1218 | { | |
1219 | printf_filtered ("\t`%s'\n", trace_dirname); | |
1220 | } | |
1221 | ||
1222 | /* This is the implementation of target_ops method to_fetch_registers. | |
1223 | Iterate over events whose name is "register" in current frame, | |
1224 | extract contents from events, and set REGCACHE with the contents. | |
1225 | If no matched events are found, mark registers unavailable. */ | |
1226 | ||
1227 | static void | |
1228 | ctf_fetch_registers (struct target_ops *ops, | |
1229 | struct regcache *regcache, int regno) | |
1230 | { | |
1231 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
393fd4c3 YQ |
1232 | struct bt_ctf_event *event = NULL; |
1233 | struct bt_iter_pos *pos; | |
1234 | ||
1235 | /* An uninitialized reg size says we're not going to be | |
1236 | successful at getting register blocks. */ | |
1237 | if (trace_regblock_size == 0) | |
1238 | return; | |
1239 | ||
1240 | gdb_assert (ctf_iter != NULL); | |
1241 | /* Save the current position. */ | |
1242 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1243 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1244 | ||
1245 | while (1) | |
1246 | { | |
1247 | const char *name; | |
1248 | struct bt_ctf_event *event1; | |
1249 | ||
1250 | event1 = bt_ctf_iter_read_event (ctf_iter); | |
1251 | ||
1252 | name = bt_ctf_event_name (event1); | |
1253 | ||
1254 | if (name == NULL || strcmp (name, "frame") == 0) | |
1255 | break; | |
1256 | else if (strcmp (name, "register") == 0) | |
1257 | { | |
1258 | event = event1; | |
1259 | break; | |
1260 | } | |
1261 | ||
1262 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1263 | break; | |
1264 | } | |
1265 | ||
1266 | /* Restore the position. */ | |
1267 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1268 | ||
1269 | if (event != NULL) | |
1270 | { | |
48b6e87e | 1271 | int offset, regsize, regn; |
393fd4c3 YQ |
1272 | const struct bt_definition *scope |
1273 | = bt_ctf_get_top_level_scope (event, | |
1274 | BT_EVENT_FIELDS); | |
1275 | const struct bt_definition *array | |
1276 | = bt_ctf_get_field (event, scope, "contents"); | |
48b6e87e | 1277 | gdb_byte *regs = (gdb_byte *) bt_ctf_get_char_array (array); |
393fd4c3 | 1278 | |
393fd4c3 YQ |
1279 | /* Assume the block is laid out in GDB register number order, |
1280 | each register with the size that it has in GDB. */ | |
1281 | offset = 0; | |
1282 | for (regn = 0; regn < gdbarch_num_regs (gdbarch); regn++) | |
1283 | { | |
1284 | regsize = register_size (gdbarch, regn); | |
1285 | /* Make sure we stay within block bounds. */ | |
1286 | if (offset + regsize >= trace_regblock_size) | |
1287 | break; | |
1288 | if (regcache_register_status (regcache, regn) == REG_UNKNOWN) | |
1289 | { | |
1290 | if (regno == regn) | |
1291 | { | |
1292 | regcache_raw_supply (regcache, regno, regs + offset); | |
1293 | break; | |
1294 | } | |
1295 | else if (regno == -1) | |
1296 | { | |
1297 | regcache_raw_supply (regcache, regn, regs + offset); | |
1298 | } | |
1299 | } | |
1300 | offset += regsize; | |
1301 | } | |
393fd4c3 | 1302 | } |
48b6e87e YQ |
1303 | else |
1304 | tracefile_fetch_registers (regcache, regno); | |
393fd4c3 YQ |
1305 | } |
1306 | ||
1307 | /* This is the implementation of target_ops method to_xfer_partial. | |
1308 | Iterate over events whose name is "memory" in | |
1309 | current frame, extract the address and length from events. If | |
1310 | OFFSET is within the range, read the contents from events to | |
1311 | READBUF. */ | |
1312 | ||
9b409511 | 1313 | static enum target_xfer_status |
393fd4c3 YQ |
1314 | ctf_xfer_partial (struct target_ops *ops, enum target_object object, |
1315 | const char *annex, gdb_byte *readbuf, | |
1316 | const gdb_byte *writebuf, ULONGEST offset, | |
9b409511 | 1317 | ULONGEST len, ULONGEST *xfered_len) |
393fd4c3 YQ |
1318 | { |
1319 | /* We're only doing regular memory for now. */ | |
1320 | if (object != TARGET_OBJECT_MEMORY) | |
1321 | return -1; | |
1322 | ||
1323 | if (readbuf == NULL) | |
1324 | error (_("ctf_xfer_partial: trace file is read-only")); | |
1325 | ||
1326 | if (get_traceframe_number () != -1) | |
1327 | { | |
1328 | struct bt_iter_pos *pos; | |
1329 | int i = 0; | |
8acf9577 | 1330 | enum target_xfer_status res; |
290a839c YQ |
1331 | /* Records the lowest available address of all blocks that |
1332 | intersects the requested range. */ | |
1333 | ULONGEST low_addr_available = 0; | |
393fd4c3 YQ |
1334 | |
1335 | gdb_assert (ctf_iter != NULL); | |
1336 | /* Save the current position. */ | |
1337 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1338 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1339 | ||
1340 | /* Iterate through the traceframe's blocks, looking for | |
1341 | memory. */ | |
1342 | while (1) | |
1343 | { | |
1344 | ULONGEST amt; | |
1345 | uint64_t maddr; | |
1346 | uint16_t mlen; | |
1347 | enum bfd_endian byte_order | |
1348 | = gdbarch_byte_order (target_gdbarch ()); | |
1349 | const struct bt_definition *scope; | |
1350 | const struct bt_definition *def; | |
1351 | struct bt_ctf_event *event | |
1352 | = bt_ctf_iter_read_event (ctf_iter); | |
1353 | const char *name = bt_ctf_event_name (event); | |
1354 | ||
dac3e710 | 1355 | if (name == NULL || strcmp (name, "frame") == 0) |
393fd4c3 YQ |
1356 | break; |
1357 | else if (strcmp (name, "memory") != 0) | |
1358 | { | |
1359 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1360 | break; | |
1361 | ||
1362 | continue; | |
1363 | } | |
1364 | ||
1365 | scope = bt_ctf_get_top_level_scope (event, | |
1366 | BT_EVENT_FIELDS); | |
1367 | ||
1368 | def = bt_ctf_get_field (event, scope, "address"); | |
1369 | maddr = bt_ctf_get_uint64 (def); | |
1370 | def = bt_ctf_get_field (event, scope, "length"); | |
1371 | mlen = (uint16_t) bt_ctf_get_uint64 (def); | |
1372 | ||
1373 | /* If the block includes the first part of the desired | |
1374 | range, return as much it has; GDB will re-request the | |
1375 | remainder, which might be in a different block of this | |
1376 | trace frame. */ | |
1377 | if (maddr <= offset && offset < (maddr + mlen)) | |
1378 | { | |
1379 | const struct bt_definition *array | |
1380 | = bt_ctf_get_field (event, scope, "contents"); | |
1381 | const struct bt_declaration *decl | |
1382 | = bt_ctf_get_decl_from_def (array); | |
1383 | gdb_byte *contents; | |
1384 | int k; | |
1385 | ||
1386 | contents = xmalloc (mlen); | |
1387 | ||
1388 | for (k = 0; k < mlen; k++) | |
1389 | { | |
1390 | const struct bt_definition *element | |
1391 | = bt_ctf_get_index (event, array, k); | |
1392 | ||
1393 | contents[k] = (gdb_byte) bt_ctf_get_uint64 (element); | |
1394 | } | |
1395 | ||
1396 | amt = (maddr + mlen) - offset; | |
1397 | if (amt > len) | |
1398 | amt = len; | |
1399 | ||
1400 | memcpy (readbuf, &contents[offset - maddr], amt); | |
1401 | ||
1402 | xfree (contents); | |
1403 | ||
1404 | /* Restore the position. */ | |
1405 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1406 | ||
9b409511 YQ |
1407 | if (amt == 0) |
1408 | return TARGET_XFER_EOF; | |
1409 | else | |
1410 | { | |
1411 | *xfered_len = amt; | |
1412 | return TARGET_XFER_OK; | |
1413 | } | |
393fd4c3 YQ |
1414 | } |
1415 | ||
290a839c YQ |
1416 | if (offset < maddr && maddr < (offset + len)) |
1417 | if (low_addr_available == 0 || low_addr_available > maddr) | |
1418 | low_addr_available = maddr; | |
1419 | ||
393fd4c3 YQ |
1420 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) |
1421 | break; | |
1422 | } | |
1423 | ||
1424 | /* Restore the position. */ | |
1425 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
393fd4c3 | 1426 | |
8acf9577 YQ |
1427 | /* Requested memory is unavailable in the context of traceframes, |
1428 | and this address falls within a read-only section, fallback | |
290a839c YQ |
1429 | to reading from executable, up to LOW_ADDR_AVAILABLE */ |
1430 | if (offset < low_addr_available) | |
1431 | len = min (len, low_addr_available - offset); | |
8acf9577 YQ |
1432 | res = exec_read_partial_read_only (readbuf, offset, len, xfered_len); |
1433 | ||
1434 | if (res == TARGET_XFER_OK) | |
1435 | return TARGET_XFER_OK; | |
1436 | else | |
1437 | { | |
1438 | /* No use trying further, we know some memory starting | |
1439 | at MEMADDR isn't available. */ | |
1440 | *xfered_len = len; | |
1441 | return TARGET_XFER_UNAVAILABLE; | |
1442 | } | |
1ee79381 YQ |
1443 | } |
1444 | else | |
1445 | { | |
1446 | /* Fallback to reading from read-only sections. */ | |
1447 | return section_table_read_available_memory (readbuf, offset, len, xfered_len); | |
1448 | } | |
393fd4c3 YQ |
1449 | } |
1450 | ||
1451 | /* This is the implementation of target_ops method | |
1452 | to_get_trace_state_variable_value. | |
1453 | Iterate over events whose name is "tsv" in current frame. When the | |
1454 | trace variable is found, set the value of it to *VAL and return | |
1455 | true, otherwise return false. */ | |
1456 | ||
1457 | static int | |
4011015b TT |
1458 | ctf_get_trace_state_variable_value (struct target_ops *self, |
1459 | int tsvnum, LONGEST *val) | |
393fd4c3 YQ |
1460 | { |
1461 | struct bt_iter_pos *pos; | |
1462 | int found = 0; | |
1463 | ||
1464 | gdb_assert (ctf_iter != NULL); | |
1465 | /* Save the current position. */ | |
1466 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1467 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1468 | ||
1469 | /* Iterate through the traceframe's blocks, looking for 'V' | |
1470 | block. */ | |
1471 | while (1) | |
1472 | { | |
1473 | struct bt_ctf_event *event | |
1474 | = bt_ctf_iter_read_event (ctf_iter); | |
1475 | const char *name = bt_ctf_event_name (event); | |
1476 | ||
1477 | if (name == NULL || strcmp (name, "frame") == 0) | |
1478 | break; | |
1479 | else if (strcmp (name, "tsv") == 0) | |
1480 | { | |
1481 | const struct bt_definition *scope; | |
1482 | const struct bt_definition *def; | |
1483 | ||
1484 | scope = bt_ctf_get_top_level_scope (event, | |
1485 | BT_EVENT_FIELDS); | |
1486 | ||
1487 | def = bt_ctf_get_field (event, scope, "num"); | |
1488 | if (tsvnum == (int32_t) bt_ctf_get_uint64 (def)) | |
1489 | { | |
1490 | def = bt_ctf_get_field (event, scope, "val"); | |
1491 | *val = bt_ctf_get_uint64 (def); | |
1492 | ||
1493 | found = 1; | |
1494 | } | |
1495 | } | |
1496 | ||
1497 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1498 | break; | |
1499 | } | |
1500 | ||
1501 | /* Restore the position. */ | |
1502 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1503 | ||
1504 | return found; | |
1505 | } | |
1506 | ||
1507 | /* Return the tracepoint number in "frame" event. */ | |
1508 | ||
1509 | static int | |
1510 | ctf_get_tpnum_from_frame_event (struct bt_ctf_event *event) | |
1511 | { | |
1512 | /* The packet context of events has a field "tpnum". */ | |
1513 | const struct bt_definition *scope | |
1514 | = bt_ctf_get_top_level_scope (event, BT_STREAM_PACKET_CONTEXT); | |
1515 | uint64_t tpnum | |
1516 | = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "tpnum")); | |
1517 | ||
1518 | return (int) tpnum; | |
1519 | } | |
1520 | ||
1521 | /* Return the address at which the current frame was collected. */ | |
1522 | ||
1523 | static CORE_ADDR | |
1524 | ctf_get_traceframe_address (void) | |
1525 | { | |
1526 | struct bt_ctf_event *event = NULL; | |
1527 | struct bt_iter_pos *pos; | |
1528 | CORE_ADDR addr = 0; | |
1529 | ||
1530 | gdb_assert (ctf_iter != NULL); | |
1531 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1532 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1533 | ||
1534 | while (1) | |
1535 | { | |
1536 | const char *name; | |
1537 | struct bt_ctf_event *event1; | |
1538 | ||
1539 | event1 = bt_ctf_iter_read_event (ctf_iter); | |
1540 | ||
1541 | name = bt_ctf_event_name (event1); | |
1542 | ||
1543 | if (name == NULL) | |
1544 | break; | |
1545 | else if (strcmp (name, "frame") == 0) | |
1546 | { | |
1547 | event = event1; | |
1548 | break; | |
1549 | } | |
1550 | ||
1551 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1552 | break; | |
1553 | } | |
1554 | ||
1555 | if (event != NULL) | |
1556 | { | |
1557 | int tpnum = ctf_get_tpnum_from_frame_event (event); | |
1558 | struct tracepoint *tp | |
1559 | = get_tracepoint_by_number_on_target (tpnum); | |
1560 | ||
1561 | if (tp && tp->base.loc) | |
1562 | addr = tp->base.loc->address; | |
1563 | } | |
1564 | ||
1565 | /* Restore the position. */ | |
1566 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1567 | ||
1568 | return addr; | |
1569 | } | |
1570 | ||
1571 | /* This is the implementation of target_ops method to_trace_find. | |
1572 | Iterate the events whose name is "frame", extract the tracepoint | |
1573 | number in it. Return traceframe number when matched. */ | |
1574 | ||
1575 | static int | |
bd4c6793 | 1576 | ctf_trace_find (struct target_ops *self, enum trace_find_type type, int num, |
393fd4c3 YQ |
1577 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) |
1578 | { | |
1579 | int ret = -1; | |
1580 | int tfnum = 0; | |
1581 | int found = 0; | |
1582 | struct bt_iter_pos pos; | |
1583 | ||
1584 | if (num == -1) | |
1585 | { | |
1586 | if (tpp != NULL) | |
1587 | *tpp = -1; | |
1588 | return -1; | |
1589 | } | |
1590 | ||
1591 | gdb_assert (ctf_iter != NULL); | |
1592 | /* Set iterator back to the start. */ | |
1593 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), start_pos); | |
1594 | ||
1595 | while (1) | |
1596 | { | |
1597 | int id; | |
1598 | struct bt_ctf_event *event; | |
1599 | const char *name; | |
1600 | ||
1601 | event = bt_ctf_iter_read_event (ctf_iter); | |
1602 | ||
1603 | name = bt_ctf_event_name (event); | |
1604 | ||
1605 | if (event == NULL || name == NULL) | |
1606 | break; | |
1607 | ||
1608 | if (strcmp (name, "frame") == 0) | |
1609 | { | |
1610 | CORE_ADDR tfaddr; | |
1611 | ||
1612 | if (type == tfind_number) | |
1613 | { | |
1614 | /* Looking for a specific trace frame. */ | |
1615 | if (tfnum == num) | |
1616 | found = 1; | |
1617 | } | |
1618 | else | |
1619 | { | |
1620 | /* Start from the _next_ trace frame. */ | |
1621 | if (tfnum > get_traceframe_number ()) | |
1622 | { | |
1623 | switch (type) | |
1624 | { | |
1625 | case tfind_tp: | |
1626 | { | |
1627 | struct tracepoint *tp = get_tracepoint (num); | |
1628 | ||
1629 | if (tp != NULL | |
1630 | && (tp->number_on_target | |
1631 | == ctf_get_tpnum_from_frame_event (event))) | |
1632 | found = 1; | |
1633 | break; | |
1634 | } | |
1635 | case tfind_pc: | |
1636 | tfaddr = ctf_get_traceframe_address (); | |
1637 | if (tfaddr == addr1) | |
1638 | found = 1; | |
1639 | break; | |
1640 | case tfind_range: | |
1641 | tfaddr = ctf_get_traceframe_address (); | |
1642 | if (addr1 <= tfaddr && tfaddr <= addr2) | |
1643 | found = 1; | |
1644 | break; | |
1645 | case tfind_outside: | |
1646 | tfaddr = ctf_get_traceframe_address (); | |
1647 | if (!(addr1 <= tfaddr && tfaddr <= addr2)) | |
1648 | found = 1; | |
1649 | break; | |
1650 | default: | |
1651 | internal_error (__FILE__, __LINE__, _("unknown tfind type")); | |
1652 | } | |
1653 | } | |
1654 | } | |
1655 | if (found) | |
1656 | { | |
1657 | if (tpp != NULL) | |
1658 | *tpp = ctf_get_tpnum_from_frame_event (event); | |
1659 | ||
1660 | /* Skip the event "frame". */ | |
1661 | bt_iter_next (bt_ctf_get_iter (ctf_iter)); | |
1662 | ||
1663 | return tfnum; | |
1664 | } | |
1665 | tfnum++; | |
1666 | } | |
1667 | ||
1668 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1669 | break; | |
1670 | } | |
1671 | ||
1672 | return -1; | |
1673 | } | |
1674 | ||
393fd4c3 YQ |
1675 | /* This is the implementation of target_ops method to_traceframe_info. |
1676 | Iterate the events whose name is "memory", in current | |
1677 | frame, extract memory range information, and return them in | |
1678 | traceframe_info. */ | |
1679 | ||
1680 | static struct traceframe_info * | |
a893e81f | 1681 | ctf_traceframe_info (struct target_ops *self) |
393fd4c3 YQ |
1682 | { |
1683 | struct traceframe_info *info = XCNEW (struct traceframe_info); | |
1684 | const char *name; | |
1685 | struct bt_iter_pos *pos; | |
1686 | ||
1687 | gdb_assert (ctf_iter != NULL); | |
1688 | /* Save the current position. */ | |
1689 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1690 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1691 | ||
1692 | do | |
1693 | { | |
1694 | struct bt_ctf_event *event | |
1695 | = bt_ctf_iter_read_event (ctf_iter); | |
1696 | ||
1697 | name = bt_ctf_event_name (event); | |
1698 | ||
1699 | if (name == NULL || strcmp (name, "register") == 0 | |
1700 | || strcmp (name, "frame") == 0) | |
1701 | ; | |
1702 | else if (strcmp (name, "memory") == 0) | |
1703 | { | |
1704 | const struct bt_definition *scope | |
1705 | = bt_ctf_get_top_level_scope (event, | |
1706 | BT_EVENT_FIELDS); | |
1707 | const struct bt_definition *def; | |
1708 | struct mem_range *r; | |
1709 | ||
1710 | r = VEC_safe_push (mem_range_s, info->memory, NULL); | |
1711 | def = bt_ctf_get_field (event, scope, "address"); | |
1712 | r->start = bt_ctf_get_uint64 (def); | |
1713 | ||
1714 | def = bt_ctf_get_field (event, scope, "length"); | |
1715 | r->length = (uint16_t) bt_ctf_get_uint64 (def); | |
1716 | } | |
28a93511 YQ |
1717 | else if (strcmp (name, "tsv") == 0) |
1718 | { | |
1719 | int vnum; | |
1720 | const struct bt_definition *scope | |
1721 | = bt_ctf_get_top_level_scope (event, | |
1722 | BT_EVENT_FIELDS); | |
1723 | const struct bt_definition *def; | |
1724 | ||
1725 | def = bt_ctf_get_field (event, scope, "num"); | |
1726 | vnum = (int) bt_ctf_get_int64 (def); | |
1727 | VEC_safe_push (int, info->tvars, vnum); | |
1728 | } | |
393fd4c3 YQ |
1729 | else |
1730 | { | |
1731 | warning (_("Unhandled trace block type (%s) " | |
1732 | "while building trace frame info."), | |
1733 | name); | |
1734 | } | |
1735 | ||
1736 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1737 | break; | |
1738 | } | |
1739 | while (name != NULL && strcmp (name, "frame") != 0); | |
1740 | ||
1741 | /* Restore the position. */ | |
1742 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1743 | ||
1744 | return info; | |
1745 | } | |
1746 | ||
393fd4c3 YQ |
1747 | static void |
1748 | init_ctf_ops (void) | |
1749 | { | |
1750 | memset (&ctf_ops, 0, sizeof (ctf_ops)); | |
1751 | ||
12e03cd0 | 1752 | init_tracefile_ops (&ctf_ops); |
393fd4c3 YQ |
1753 | ctf_ops.to_shortname = "ctf"; |
1754 | ctf_ops.to_longname = "CTF file"; | |
1755 | ctf_ops.to_doc = "Use a CTF directory as a target.\n\ | |
1756 | Specify the filename of the CTF directory."; | |
1757 | ctf_ops.to_open = ctf_open; | |
1758 | ctf_ops.to_close = ctf_close; | |
1759 | ctf_ops.to_fetch_registers = ctf_fetch_registers; | |
1760 | ctf_ops.to_xfer_partial = ctf_xfer_partial; | |
1761 | ctf_ops.to_files_info = ctf_files_info; | |
393fd4c3 YQ |
1762 | ctf_ops.to_trace_find = ctf_trace_find; |
1763 | ctf_ops.to_get_trace_state_variable_value | |
1764 | = ctf_get_trace_state_variable_value; | |
393fd4c3 | 1765 | ctf_ops.to_traceframe_info = ctf_traceframe_info; |
393fd4c3 YQ |
1766 | } |
1767 | ||
1768 | #endif | |
1769 | ||
1770 | /* -Wmissing-prototypes */ | |
1771 | ||
1772 | extern initialize_file_ftype _initialize_ctf; | |
1773 | ||
1774 | /* module initialization */ | |
1775 | ||
1776 | void | |
1777 | _initialize_ctf (void) | |
1778 | { | |
1779 | #if HAVE_LIBBABELTRACE | |
1780 | init_ctf_ops (); | |
1781 | ||
da9160e4 | 1782 | add_target_with_completer (&ctf_ops, filename_completer); |
393fd4c3 YQ |
1783 | #endif |
1784 | } |