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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" | |
d0353e76 YQ |
31 | |
32 | #include <ctype.h> | |
33 | ||
34 | /* GDB saves trace buffers and other information (such as trace | |
35 | status) got from the remote target into Common Trace Format (CTF). | |
36 | The following types of information are expected to save in CTF: | |
37 | ||
38 | 1. The length (in bytes) of register cache. Event "register" will | |
39 | be defined in metadata, which includes the length. | |
40 | ||
393fd4c3 YQ |
41 | 2. Trace status. Event "status" is defined in metadata, which |
42 | includes all aspects of trace status. | |
d0353e76 | 43 | |
393fd4c3 YQ |
44 | 3. Uploaded trace variables. Event "tsv_def" is defined in |
45 | metadata, which is about all aspects of a uploaded trace variable. | |
46 | Uploaded tracepoints. Event "tp_def" is defined in meta, which | |
47 | is about all aspects of an uploaded tracepoint. Note that the | |
48 | "sequence" (a CTF type, which is a dynamically-sized array.) is | |
49 | used for "actions" "step_actions" and "cmd_strings". | |
d0353e76 YQ |
50 | |
51 | 4. Trace frames. Each trace frame is composed by several blocks | |
52 | of different types ('R', 'M', 'V'). One trace frame is saved in | |
53 | one CTF packet and the blocks of this frame are saved as events. | |
54 | 4.1: The trace frame related information (such as the number of | |
55 | tracepoint associated with this frame) is saved in the packet | |
56 | context. | |
57 | 4.2: The block 'M', 'R' and 'V' are saved in event "memory", | |
58 | "register" and "tsv" respectively. | |
59 | 4.3: When iterating over events, babeltrace can't tell iterator | |
60 | goes to a new packet, so we need a marker or anchor to tell GDB | |
61 | that iterator goes into a new packet or frame. We define event | |
62 | "frame". */ | |
63 | ||
64 | #define CTF_MAGIC 0xC1FC1FC1 | |
65 | #define CTF_SAVE_MAJOR 1 | |
66 | #define CTF_SAVE_MINOR 8 | |
67 | ||
68 | #define CTF_METADATA_NAME "metadata" | |
69 | #define CTF_DATASTREAM_NAME "datastream" | |
70 | ||
71 | /* Reserved event id. */ | |
72 | ||
73 | #define CTF_EVENT_ID_REGISTER 0 | |
74 | #define CTF_EVENT_ID_TSV 1 | |
75 | #define CTF_EVENT_ID_MEMORY 2 | |
76 | #define CTF_EVENT_ID_FRAME 3 | |
393fd4c3 YQ |
77 | #define CTF_EVENT_ID_STATUS 4 |
78 | #define CTF_EVENT_ID_TSV_DEF 5 | |
79 | #define CTF_EVENT_ID_TP_DEF 6 | |
d0353e76 | 80 | |
de7b2893 YQ |
81 | #define CTF_PID (2) |
82 | ||
d0353e76 YQ |
83 | /* The state kept while writing the CTF datastream file. */ |
84 | ||
85 | struct trace_write_handler | |
86 | { | |
87 | /* File descriptor of metadata. */ | |
88 | FILE *metadata_fd; | |
89 | /* File descriptor of traceframes. */ | |
90 | FILE *datastream_fd; | |
91 | ||
92 | /* This is the content size of the current packet. */ | |
93 | size_t content_size; | |
94 | ||
95 | /* This is the start offset of current packet. */ | |
96 | long packet_start; | |
97 | }; | |
98 | ||
99 | /* Write metadata in FORMAT. */ | |
100 | ||
101 | static void | |
102 | ctf_save_write_metadata (struct trace_write_handler *handler, | |
103 | const char *format, ...) | |
104 | { | |
105 | va_list args; | |
106 | ||
107 | va_start (args, format); | |
108 | if (vfprintf (handler->metadata_fd, format, args) < 0) | |
109 | error (_("Unable to write metadata file (%s)"), | |
110 | safe_strerror (errno)); | |
111 | va_end (args); | |
112 | } | |
113 | ||
114 | /* Write BUF of length SIZE to datastream file represented by | |
115 | HANDLER. */ | |
116 | ||
117 | static int | |
118 | ctf_save_write (struct trace_write_handler *handler, | |
119 | const gdb_byte *buf, size_t size) | |
120 | { | |
121 | if (fwrite (buf, size, 1, handler->datastream_fd) != 1) | |
122 | error (_("Unable to write file for saving trace data (%s)"), | |
123 | safe_strerror (errno)); | |
124 | ||
125 | handler->content_size += size; | |
126 | ||
127 | return 0; | |
128 | } | |
129 | ||
130 | /* Write a unsigned 32-bit integer to datastream file represented by | |
131 | HANDLER. */ | |
132 | ||
133 | #define ctf_save_write_uint32(HANDLER, U32) \ | |
134 | ctf_save_write (HANDLER, (gdb_byte *) &U32, 4) | |
135 | ||
393fd4c3 YQ |
136 | /* Write a signed 32-bit integer to datastream file represented by |
137 | HANDLER. */ | |
138 | ||
139 | #define ctf_save_write_int32(HANDLER, INT32) \ | |
140 | ctf_save_write ((HANDLER), (gdb_byte *) &(INT32), 4) | |
141 | ||
d0353e76 YQ |
142 | /* Set datastream file position. Update HANDLER->content_size |
143 | if WHENCE is SEEK_CUR. */ | |
144 | ||
145 | static int | |
146 | ctf_save_fseek (struct trace_write_handler *handler, long offset, | |
147 | int whence) | |
148 | { | |
149 | gdb_assert (whence != SEEK_END); | |
150 | gdb_assert (whence != SEEK_SET | |
151 | || offset <= handler->content_size + handler->packet_start); | |
152 | ||
153 | if (fseek (handler->datastream_fd, offset, whence)) | |
154 | error (_("Unable to seek file for saving trace data (%s)"), | |
155 | safe_strerror (errno)); | |
156 | ||
157 | if (whence == SEEK_CUR) | |
158 | handler->content_size += offset; | |
159 | ||
160 | return 0; | |
161 | } | |
162 | ||
163 | /* Change the datastream file position to align on ALIGN_SIZE, | |
164 | and write BUF to datastream file. The size of BUF is SIZE. */ | |
165 | ||
166 | static int | |
167 | ctf_save_align_write (struct trace_write_handler *handler, | |
168 | const gdb_byte *buf, | |
169 | size_t size, size_t align_size) | |
170 | { | |
171 | long offset | |
172 | = (align_up (handler->content_size, align_size) | |
173 | - handler->content_size); | |
174 | ||
175 | if (ctf_save_fseek (handler, offset, SEEK_CUR)) | |
176 | return -1; | |
177 | ||
178 | if (ctf_save_write (handler, buf, size)) | |
179 | return -1; | |
180 | ||
181 | return 0; | |
182 | } | |
183 | ||
184 | /* Write events to next new packet. */ | |
185 | ||
186 | static void | |
187 | ctf_save_next_packet (struct trace_write_handler *handler) | |
188 | { | |
189 | handler->packet_start += (handler->content_size + 4); | |
190 | ctf_save_fseek (handler, handler->packet_start, SEEK_SET); | |
191 | handler->content_size = 0; | |
192 | } | |
193 | ||
194 | /* Write the CTF metadata header. */ | |
195 | ||
196 | static void | |
197 | ctf_save_metadata_header (struct trace_write_handler *handler) | |
198 | { | |
199 | const char metadata_fmt[] = | |
200 | "\ntrace {\n" | |
201 | " major = %u;\n" | |
202 | " minor = %u;\n" | |
203 | " byte_order = %s;\n" /* be or le */ | |
204 | " packet.header := struct {\n" | |
205 | " uint32_t magic;\n" | |
206 | " };\n" | |
207 | "};\n" | |
208 | "\n" | |
209 | "stream {\n" | |
210 | " packet.context := struct {\n" | |
211 | " uint32_t content_size;\n" | |
212 | " uint32_t packet_size;\n" | |
213 | " uint16_t tpnum;\n" | |
214 | " };\n" | |
215 | " event.header := struct {\n" | |
216 | " uint32_t id;\n" | |
217 | " };\n" | |
218 | "};\n"; | |
219 | ||
220 | ctf_save_write_metadata (handler, "/* CTF %d.%d */\n", | |
221 | CTF_SAVE_MAJOR, CTF_SAVE_MINOR); | |
222 | ctf_save_write_metadata (handler, | |
223 | "typealias integer { size = 8; align = 8; " | |
224 | "signed = false; encoding = ascii;}" | |
225 | " := ascii;\n"); | |
226 | ctf_save_write_metadata (handler, | |
227 | "typealias integer { size = 8; align = 8; " | |
228 | "signed = false; }" | |
229 | " := uint8_t;\n"); | |
230 | ctf_save_write_metadata (handler, | |
231 | "typealias integer { size = 16; align = 16;" | |
232 | "signed = false; } := uint16_t;\n"); | |
233 | ctf_save_write_metadata (handler, | |
234 | "typealias integer { size = 32; align = 32;" | |
235 | "signed = false; } := uint32_t;\n"); | |
236 | ctf_save_write_metadata (handler, | |
237 | "typealias integer { size = 64; align = 64;" | |
238 | "signed = false; base = hex;}" | |
239 | " := uint64_t;\n"); | |
393fd4c3 YQ |
240 | ctf_save_write_metadata (handler, |
241 | "typealias integer { size = 32; align = 32;" | |
242 | "signed = true; } := int32_t;\n"); | |
243 | ctf_save_write_metadata (handler, | |
244 | "typealias integer { size = 64; align = 64;" | |
245 | "signed = true; } := int64_t;\n"); | |
246 | ctf_save_write_metadata (handler, | |
247 | "typealias string { encoding = ascii;" | |
248 | " } := chars;\n"); | |
d0353e76 YQ |
249 | ctf_save_write_metadata (handler, "\n"); |
250 | ||
8249a5a9 YQ |
251 | /* Get the byte order of the host and write CTF data in this byte |
252 | order. */ | |
253 | #if WORDS_BIGENDIAN | |
254 | #define HOST_ENDIANNESS "be" | |
255 | #else | |
256 | #define HOST_ENDIANNESS "le" | |
257 | #endif | |
258 | ||
d0353e76 YQ |
259 | ctf_save_write_metadata (handler, metadata_fmt, |
260 | CTF_SAVE_MAJOR, CTF_SAVE_MINOR, | |
8249a5a9 | 261 | HOST_ENDIANNESS); |
d0353e76 YQ |
262 | ctf_save_write_metadata (handler, "\n"); |
263 | } | |
264 | ||
265 | /* CTF trace writer. */ | |
266 | ||
267 | struct ctf_trace_file_writer | |
268 | { | |
269 | struct trace_file_writer base; | |
270 | ||
271 | /* States related to writing CTF trace file. */ | |
272 | struct trace_write_handler tcs; | |
273 | }; | |
274 | ||
275 | /* This is the implementation of trace_file_write_ops method | |
276 | dtor. */ | |
277 | ||
278 | static void | |
279 | ctf_dtor (struct trace_file_writer *self) | |
280 | { | |
281 | struct ctf_trace_file_writer *writer | |
282 | = (struct ctf_trace_file_writer *) self; | |
283 | ||
284 | if (writer->tcs.metadata_fd != NULL) | |
285 | fclose (writer->tcs.metadata_fd); | |
286 | ||
287 | if (writer->tcs.datastream_fd != NULL) | |
288 | fclose (writer->tcs.datastream_fd); | |
289 | ||
290 | } | |
291 | ||
292 | /* This is the implementation of trace_file_write_ops method | |
293 | target_save. */ | |
294 | ||
295 | static int | |
296 | ctf_target_save (struct trace_file_writer *self, | |
297 | const char *dirname) | |
298 | { | |
299 | /* Don't support save trace file to CTF format in the target. */ | |
300 | return 0; | |
301 | } | |
302 | ||
af307d6a | 303 | #ifdef USE_WIN32API |
a4341769 YQ |
304 | #undef mkdir |
305 | #define mkdir(pathname, mode) mkdir (pathname) | |
af307d6a YQ |
306 | #endif |
307 | ||
d0353e76 YQ |
308 | /* This is the implementation of trace_file_write_ops method |
309 | start. It creates the directory DIRNAME, metadata and datastream | |
310 | in the directory. */ | |
311 | ||
312 | static void | |
313 | ctf_start (struct trace_file_writer *self, const char *dirname) | |
314 | { | |
315 | char *file_name; | |
316 | struct cleanup *old_chain; | |
317 | struct ctf_trace_file_writer *writer | |
318 | = (struct ctf_trace_file_writer *) self; | |
319 | int i; | |
840207d8 | 320 | mode_t hmode = S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH; |
d0353e76 YQ |
321 | |
322 | /* Create DIRNAME. */ | |
af307d6a | 323 | if (mkdir (dirname, hmode) && errno != EEXIST) |
d0353e76 YQ |
324 | error (_("Unable to open directory '%s' for saving trace data (%s)"), |
325 | dirname, safe_strerror (errno)); | |
326 | ||
327 | memset (&writer->tcs, '\0', sizeof (writer->tcs)); | |
328 | ||
329 | file_name = xstrprintf ("%s/%s", dirname, CTF_METADATA_NAME); | |
330 | old_chain = make_cleanup (xfree, file_name); | |
331 | ||
332 | writer->tcs.metadata_fd = fopen (file_name, "w"); | |
333 | if (writer->tcs.metadata_fd == NULL) | |
334 | error (_("Unable to open file '%s' for saving trace data (%s)"), | |
335 | file_name, safe_strerror (errno)); | |
336 | do_cleanups (old_chain); | |
337 | ||
338 | ctf_save_metadata_header (&writer->tcs); | |
339 | ||
340 | file_name = xstrprintf ("%s/%s", dirname, CTF_DATASTREAM_NAME); | |
341 | old_chain = make_cleanup (xfree, file_name); | |
342 | writer->tcs.datastream_fd = fopen (file_name, "w"); | |
343 | if (writer->tcs.datastream_fd == NULL) | |
344 | error (_("Unable to open file '%s' for saving trace data (%s)"), | |
345 | file_name, safe_strerror (errno)); | |
346 | do_cleanups (old_chain); | |
347 | } | |
348 | ||
349 | /* This is the implementation of trace_file_write_ops method | |
350 | write_header. Write the types of events on trace variable and | |
351 | frame. */ | |
352 | ||
353 | static void | |
354 | ctf_write_header (struct trace_file_writer *self) | |
355 | { | |
356 | struct ctf_trace_file_writer *writer | |
357 | = (struct ctf_trace_file_writer *) self; | |
358 | ||
359 | ||
360 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
361 | ctf_save_write_metadata (&writer->tcs, | |
362 | "event {\n\tname = \"memory\";\n\tid = %u;\n" | |
363 | "\tfields := struct { \n" | |
364 | "\t\tuint64_t address;\n" | |
365 | "\t\tuint16_t length;\n" | |
366 | "\t\tuint8_t contents[length];\n" | |
367 | "\t};\n" | |
368 | "};\n", CTF_EVENT_ID_MEMORY); | |
369 | ||
370 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
371 | ctf_save_write_metadata (&writer->tcs, | |
372 | "event {\n\tname = \"tsv\";\n\tid = %u;\n" | |
373 | "\tfields := struct { \n" | |
374 | "\t\tuint64_t val;\n" | |
375 | "\t\tuint32_t num;\n" | |
376 | "\t};\n" | |
377 | "};\n", CTF_EVENT_ID_TSV); | |
378 | ||
379 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
380 | ctf_save_write_metadata (&writer->tcs, | |
381 | "event {\n\tname = \"frame\";\n\tid = %u;\n" | |
382 | "\tfields := struct { \n" | |
383 | "\t};\n" | |
384 | "};\n", CTF_EVENT_ID_FRAME); | |
385 | ||
393fd4c3 YQ |
386 | ctf_save_write_metadata (&writer->tcs, "\n"); |
387 | ctf_save_write_metadata (&writer->tcs, | |
388 | "event {\n\tname = \"tsv_def\";\n" | |
389 | "\tid = %u;\n\tfields := struct { \n" | |
390 | "\t\tint64_t initial_value;\n" | |
391 | "\t\tint32_t number;\n" | |
392 | "\t\tint32_t builtin;\n" | |
393 | "\t\tchars name;\n" | |
394 | "\t};\n" | |
395 | "};\n", CTF_EVENT_ID_TSV_DEF); | |
396 | ||
397 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
398 | ctf_save_write_metadata (&writer->tcs, | |
399 | "event {\n\tname = \"tp_def\";\n" | |
400 | "\tid = %u;\n\tfields := struct { \n" | |
401 | "\t\tuint64_t addr;\n" | |
402 | "\t\tuint64_t traceframe_usage;\n" | |
403 | "\t\tint32_t number;\n" | |
404 | "\t\tint32_t enabled;\n" | |
405 | "\t\tint32_t step;\n" | |
406 | "\t\tint32_t pass;\n" | |
407 | "\t\tint32_t hit_count;\n" | |
408 | "\t\tint32_t type;\n" | |
409 | "\t\tchars cond;\n" | |
410 | ||
411 | "\t\tuint32_t action_num;\n" | |
412 | "\t\tchars actions[action_num];\n" | |
413 | ||
414 | "\t\tuint32_t step_action_num;\n" | |
415 | "\t\tchars step_actions[step_action_num];\n" | |
416 | ||
417 | "\t\tchars at_string;\n" | |
418 | "\t\tchars cond_string;\n" | |
419 | ||
420 | "\t\tuint32_t cmd_num;\n" | |
421 | "\t\tchars cmd_strings[cmd_num];\n" | |
422 | "\t};\n" | |
423 | "};\n", CTF_EVENT_ID_TP_DEF); | |
424 | ||
d0353e76 YQ |
425 | gdb_assert (writer->tcs.content_size == 0); |
426 | gdb_assert (writer->tcs.packet_start == 0); | |
393fd4c3 YQ |
427 | |
428 | /* Create a new packet to contain this event. */ | |
429 | self->ops->frame_ops->start (self, 0); | |
d0353e76 YQ |
430 | } |
431 | ||
432 | /* This is the implementation of trace_file_write_ops method | |
433 | write_regblock_type. Write the type of register event in | |
434 | metadata. */ | |
435 | ||
436 | static void | |
437 | ctf_write_regblock_type (struct trace_file_writer *self, int size) | |
438 | { | |
439 | struct ctf_trace_file_writer *writer | |
440 | = (struct ctf_trace_file_writer *) self; | |
441 | ||
442 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
443 | ||
444 | ctf_save_write_metadata (&writer->tcs, | |
445 | "event {\n\tname = \"register\";\n\tid = %u;\n" | |
446 | "\tfields := struct { \n" | |
447 | "\t\tascii contents[%d];\n" | |
448 | "\t};\n" | |
449 | "};\n", | |
450 | CTF_EVENT_ID_REGISTER, size); | |
451 | } | |
452 | ||
453 | /* This is the implementation of trace_file_write_ops method | |
454 | write_status. */ | |
455 | ||
456 | static void | |
457 | ctf_write_status (struct trace_file_writer *self, | |
458 | struct trace_status *ts) | |
459 | { | |
393fd4c3 YQ |
460 | struct ctf_trace_file_writer *writer |
461 | = (struct ctf_trace_file_writer *) self; | |
462 | uint32_t id; | |
463 | int32_t int32; | |
464 | ||
465 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
466 | ctf_save_write_metadata (&writer->tcs, | |
467 | "event {\n\tname = \"status\";\n\tid = %u;\n" | |
468 | "\tfields := struct { \n" | |
469 | "\t\tint32_t stop_reason;\n" | |
470 | "\t\tint32_t stopping_tracepoint;\n" | |
471 | "\t\tint32_t traceframe_count;\n" | |
472 | "\t\tint32_t traceframes_created;\n" | |
473 | "\t\tint32_t buffer_free;\n" | |
474 | "\t\tint32_t buffer_size;\n" | |
475 | "\t\tint32_t disconnected_tracing;\n" | |
476 | "\t\tint32_t circular_buffer;\n" | |
477 | "\t};\n" | |
478 | "};\n", | |
479 | CTF_EVENT_ID_STATUS); | |
480 | ||
481 | id = CTF_EVENT_ID_STATUS; | |
482 | /* Event Id. */ | |
483 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
484 | ||
485 | ctf_save_write_int32 (&writer->tcs, ts->stop_reason); | |
486 | ctf_save_write_int32 (&writer->tcs, ts->stopping_tracepoint); | |
487 | ctf_save_write_int32 (&writer->tcs, ts->traceframe_count); | |
488 | ctf_save_write_int32 (&writer->tcs, ts->traceframes_created); | |
489 | ctf_save_write_int32 (&writer->tcs, ts->buffer_free); | |
490 | ctf_save_write_int32 (&writer->tcs, ts->buffer_size); | |
491 | ctf_save_write_int32 (&writer->tcs, ts->disconnected_tracing); | |
492 | ctf_save_write_int32 (&writer->tcs, ts->circular_buffer); | |
d0353e76 YQ |
493 | } |
494 | ||
495 | /* This is the implementation of trace_file_write_ops method | |
496 | write_uploaded_tsv. */ | |
497 | ||
498 | static void | |
499 | ctf_write_uploaded_tsv (struct trace_file_writer *self, | |
500 | struct uploaded_tsv *tsv) | |
501 | { | |
393fd4c3 YQ |
502 | struct ctf_trace_file_writer *writer |
503 | = (struct ctf_trace_file_writer *) self; | |
504 | int32_t int32; | |
505 | int64_t int64; | |
506 | unsigned int len; | |
507 | const gdb_byte zero = 0; | |
508 | ||
509 | /* Event Id. */ | |
510 | int32 = CTF_EVENT_ID_TSV_DEF; | |
511 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int32, 4, 4); | |
512 | ||
513 | /* initial_value */ | |
514 | int64 = tsv->initial_value; | |
515 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int64, 8, 8); | |
516 | ||
517 | /* number */ | |
518 | ctf_save_write_int32 (&writer->tcs, tsv->number); | |
519 | ||
520 | /* builtin */ | |
521 | ctf_save_write_int32 (&writer->tcs, tsv->builtin); | |
522 | ||
523 | /* name */ | |
524 | if (tsv->name != NULL) | |
a398505b PA |
525 | ctf_save_write (&writer->tcs, (gdb_byte *) tsv->name, |
526 | strlen (tsv->name)); | |
393fd4c3 | 527 | ctf_save_write (&writer->tcs, &zero, 1); |
d0353e76 YQ |
528 | } |
529 | ||
530 | /* This is the implementation of trace_file_write_ops method | |
531 | write_uploaded_tp. */ | |
532 | ||
533 | static void | |
534 | ctf_write_uploaded_tp (struct trace_file_writer *self, | |
535 | struct uploaded_tp *tp) | |
536 | { | |
393fd4c3 YQ |
537 | struct ctf_trace_file_writer *writer |
538 | = (struct ctf_trace_file_writer *) self; | |
539 | int32_t int32; | |
540 | int64_t int64; | |
541 | uint32_t u32; | |
542 | const gdb_byte zero = 0; | |
543 | int a; | |
544 | char *act; | |
545 | ||
546 | /* Event Id. */ | |
547 | int32 = CTF_EVENT_ID_TP_DEF; | |
548 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int32, 4, 4); | |
549 | ||
550 | /* address */ | |
551 | int64 = tp->addr; | |
552 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int64, 8, 8); | |
553 | ||
554 | /* traceframe_usage */ | |
555 | int64 = tp->traceframe_usage; | |
556 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int64, 8, 8); | |
557 | ||
558 | /* number */ | |
559 | ctf_save_write_int32 (&writer->tcs, tp->number); | |
560 | ||
561 | /* enabled */ | |
562 | ctf_save_write_int32 (&writer->tcs, tp->enabled); | |
563 | ||
564 | /* step */ | |
565 | ctf_save_write_int32 (&writer->tcs, tp->step); | |
566 | ||
567 | /* pass */ | |
568 | ctf_save_write_int32 (&writer->tcs, tp->pass); | |
569 | ||
570 | /* hit_count */ | |
571 | ctf_save_write_int32 (&writer->tcs, tp->hit_count); | |
572 | ||
573 | /* type */ | |
574 | ctf_save_write_int32 (&writer->tcs, tp->type); | |
575 | ||
576 | /* condition */ | |
577 | if (tp->cond != NULL) | |
a398505b | 578 | ctf_save_write (&writer->tcs, (gdb_byte *) tp->cond, strlen (tp->cond)); |
393fd4c3 YQ |
579 | ctf_save_write (&writer->tcs, &zero, 1); |
580 | ||
581 | /* actions */ | |
582 | u32 = VEC_length (char_ptr, tp->actions); | |
583 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &u32, 4, 4); | |
584 | for (a = 0; VEC_iterate (char_ptr, tp->actions, a, act); ++a) | |
a398505b | 585 | ctf_save_write (&writer->tcs, (gdb_byte *) act, strlen (act) + 1); |
393fd4c3 YQ |
586 | |
587 | /* step_actions */ | |
588 | u32 = VEC_length (char_ptr, tp->step_actions); | |
589 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &u32, 4, 4); | |
590 | for (a = 0; VEC_iterate (char_ptr, tp->step_actions, a, act); ++a) | |
a398505b | 591 | ctf_save_write (&writer->tcs, (gdb_byte *) act, strlen (act) + 1); |
393fd4c3 YQ |
592 | |
593 | /* at_string */ | |
594 | if (tp->at_string != NULL) | |
a398505b | 595 | ctf_save_write (&writer->tcs, (gdb_byte *) tp->at_string, |
393fd4c3 YQ |
596 | strlen (tp->at_string)); |
597 | ctf_save_write (&writer->tcs, &zero, 1); | |
598 | ||
599 | /* cond_string */ | |
600 | if (tp->cond_string != NULL) | |
a398505b | 601 | ctf_save_write (&writer->tcs, (gdb_byte *) tp->cond_string, |
393fd4c3 YQ |
602 | strlen (tp->cond_string)); |
603 | ctf_save_write (&writer->tcs, &zero, 1); | |
604 | ||
605 | /* cmd_strings */ | |
606 | u32 = VEC_length (char_ptr, tp->cmd_strings); | |
607 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &u32, 4, 4); | |
608 | for (a = 0; VEC_iterate (char_ptr, tp->cmd_strings, a, act); ++a) | |
a398505b | 609 | ctf_save_write (&writer->tcs, (gdb_byte *) act, strlen (act) + 1); |
393fd4c3 | 610 | |
d0353e76 YQ |
611 | } |
612 | ||
613 | /* This is the implementation of trace_file_write_ops method | |
614 | write_definition_end. */ | |
615 | ||
616 | static void | |
617 | ctf_write_definition_end (struct trace_file_writer *self) | |
618 | { | |
393fd4c3 YQ |
619 | struct ctf_trace_file_writer *writer |
620 | = (struct ctf_trace_file_writer *) self; | |
621 | ||
622 | self->ops->frame_ops->end (self); | |
d0353e76 YQ |
623 | } |
624 | ||
625 | /* The minimal file size of data stream. It is required by | |
626 | babeltrace. */ | |
627 | ||
628 | #define CTF_FILE_MIN_SIZE 4096 | |
629 | ||
630 | /* This is the implementation of trace_file_write_ops method | |
631 | end. */ | |
632 | ||
633 | static void | |
634 | ctf_end (struct trace_file_writer *self) | |
635 | { | |
636 | struct ctf_trace_file_writer *writer = (struct ctf_trace_file_writer *) self; | |
637 | ||
638 | gdb_assert (writer->tcs.content_size == 0); | |
639 | /* The babeltrace requires or assumes that the size of datastream | |
640 | file is greater than 4096 bytes. If we don't generate enough | |
641 | packets and events, create a fake packet which has zero event, | |
642 | to use up the space. */ | |
643 | if (writer->tcs.packet_start < CTF_FILE_MIN_SIZE) | |
644 | { | |
645 | uint32_t u32; | |
646 | ||
647 | /* magic. */ | |
648 | u32 = CTF_MAGIC; | |
649 | ctf_save_write_uint32 (&writer->tcs, u32); | |
650 | ||
651 | /* content_size. */ | |
652 | u32 = 0; | |
653 | ctf_save_write_uint32 (&writer->tcs, u32); | |
654 | ||
655 | /* packet_size. */ | |
656 | u32 = 12; | |
657 | if (writer->tcs.packet_start + u32 < CTF_FILE_MIN_SIZE) | |
658 | u32 = CTF_FILE_MIN_SIZE - writer->tcs.packet_start; | |
659 | ||
660 | u32 *= TARGET_CHAR_BIT; | |
661 | ctf_save_write_uint32 (&writer->tcs, u32); | |
662 | ||
663 | /* tpnum. */ | |
664 | u32 = 0; | |
665 | ctf_save_write (&writer->tcs, (gdb_byte *) &u32, 2); | |
666 | ||
667 | /* Enlarge the file to CTF_FILE_MIN_SIZE is it is still less | |
668 | than that. */ | |
669 | if (CTF_FILE_MIN_SIZE | |
670 | > (writer->tcs.packet_start + writer->tcs.content_size)) | |
671 | { | |
672 | gdb_byte b = 0; | |
673 | ||
674 | /* Fake the content size to avoid assertion failure in | |
675 | ctf_save_fseek. */ | |
676 | writer->tcs.content_size = (CTF_FILE_MIN_SIZE | |
677 | - 1 - writer->tcs.packet_start); | |
678 | ctf_save_fseek (&writer->tcs, CTF_FILE_MIN_SIZE - 1, | |
679 | SEEK_SET); | |
680 | ctf_save_write (&writer->tcs, &b, 1); | |
681 | } | |
682 | } | |
683 | } | |
684 | ||
685 | /* This is the implementation of trace_frame_write_ops method | |
686 | start. */ | |
687 | ||
688 | static void | |
689 | ctf_write_frame_start (struct trace_file_writer *self, uint16_t tpnum) | |
690 | { | |
691 | struct ctf_trace_file_writer *writer | |
692 | = (struct ctf_trace_file_writer *) self; | |
693 | uint32_t id = CTF_EVENT_ID_FRAME; | |
694 | uint32_t u32; | |
695 | ||
696 | /* Step 1: Write packet context. */ | |
697 | /* magic. */ | |
698 | u32 = CTF_MAGIC; | |
699 | ctf_save_write_uint32 (&writer->tcs, u32); | |
700 | /* content_size and packet_size.. We still don't know the value, | |
701 | write it later. */ | |
702 | ctf_save_fseek (&writer->tcs, 4, SEEK_CUR); | |
703 | ctf_save_fseek (&writer->tcs, 4, SEEK_CUR); | |
704 | /* Tracepoint number. */ | |
705 | ctf_save_write (&writer->tcs, (gdb_byte *) &tpnum, 2); | |
706 | ||
707 | /* Step 2: Write event "frame". */ | |
708 | /* Event Id. */ | |
709 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
710 | } | |
711 | ||
712 | /* This is the implementation of trace_frame_write_ops method | |
713 | write_r_block. */ | |
714 | ||
715 | static void | |
716 | ctf_write_frame_r_block (struct trace_file_writer *self, | |
717 | gdb_byte *buf, int32_t size) | |
718 | { | |
719 | struct ctf_trace_file_writer *writer | |
720 | = (struct ctf_trace_file_writer *) self; | |
721 | uint32_t id = CTF_EVENT_ID_REGISTER; | |
722 | ||
723 | /* Event Id. */ | |
724 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
725 | ||
726 | /* array contents. */ | |
727 | ctf_save_align_write (&writer->tcs, buf, size, 1); | |
728 | } | |
729 | ||
730 | /* This is the implementation of trace_frame_write_ops method | |
731 | write_m_block_header. */ | |
732 | ||
733 | static void | |
734 | ctf_write_frame_m_block_header (struct trace_file_writer *self, | |
735 | uint64_t addr, uint16_t length) | |
736 | { | |
737 | struct ctf_trace_file_writer *writer | |
738 | = (struct ctf_trace_file_writer *) self; | |
739 | uint32_t event_id = CTF_EVENT_ID_MEMORY; | |
740 | ||
741 | /* Event Id. */ | |
742 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &event_id, 4, 4); | |
743 | ||
744 | /* Address. */ | |
745 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &addr, 8, 8); | |
746 | ||
747 | /* Length. */ | |
748 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &length, 2, 2); | |
749 | } | |
750 | ||
751 | /* This is the implementation of trace_frame_write_ops method | |
752 | write_m_block_memory. */ | |
753 | ||
754 | static void | |
755 | ctf_write_frame_m_block_memory (struct trace_file_writer *self, | |
756 | gdb_byte *buf, uint16_t length) | |
757 | { | |
758 | struct ctf_trace_file_writer *writer | |
759 | = (struct ctf_trace_file_writer *) self; | |
760 | ||
761 | /* Contents. */ | |
762 | ctf_save_align_write (&writer->tcs, (gdb_byte *) buf, length, 1); | |
763 | } | |
764 | ||
765 | /* This is the implementation of trace_frame_write_ops method | |
766 | write_v_block. */ | |
767 | ||
768 | static void | |
769 | ctf_write_frame_v_block (struct trace_file_writer *self, | |
770 | int32_t num, uint64_t val) | |
771 | { | |
772 | struct ctf_trace_file_writer *writer | |
773 | = (struct ctf_trace_file_writer *) self; | |
774 | uint32_t id = CTF_EVENT_ID_TSV; | |
775 | ||
776 | /* Event Id. */ | |
777 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
778 | ||
779 | /* val. */ | |
780 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &val, 8, 8); | |
781 | /* num. */ | |
782 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &num, 4, 4); | |
783 | } | |
784 | ||
785 | /* This is the implementation of trace_frame_write_ops method | |
786 | end. */ | |
787 | ||
788 | static void | |
789 | ctf_write_frame_end (struct trace_file_writer *self) | |
790 | { | |
791 | struct ctf_trace_file_writer *writer | |
792 | = (struct ctf_trace_file_writer *) self; | |
793 | uint32_t u32; | |
794 | uint32_t t; | |
795 | ||
796 | /* Write the content size to packet header. */ | |
797 | ctf_save_fseek (&writer->tcs, writer->tcs.packet_start + 4, | |
798 | SEEK_SET); | |
799 | u32 = writer->tcs.content_size * TARGET_CHAR_BIT; | |
800 | ||
801 | t = writer->tcs.content_size; | |
802 | ctf_save_write_uint32 (&writer->tcs, u32); | |
803 | ||
804 | /* Write the packet size. */ | |
805 | u32 += 4 * TARGET_CHAR_BIT; | |
806 | ctf_save_write_uint32 (&writer->tcs, u32); | |
807 | ||
808 | writer->tcs.content_size = t; | |
809 | ||
810 | /* Write zero at the end of the packet. */ | |
811 | ctf_save_fseek (&writer->tcs, writer->tcs.packet_start + t, | |
812 | SEEK_SET); | |
813 | u32 = 0; | |
814 | ctf_save_write_uint32 (&writer->tcs, u32); | |
815 | writer->tcs.content_size = t; | |
816 | ||
817 | ctf_save_next_packet (&writer->tcs); | |
818 | } | |
819 | ||
820 | /* Operations to write various types of trace frames into CTF | |
821 | format. */ | |
822 | ||
823 | static const struct trace_frame_write_ops ctf_write_frame_ops = | |
824 | { | |
825 | ctf_write_frame_start, | |
826 | ctf_write_frame_r_block, | |
827 | ctf_write_frame_m_block_header, | |
828 | ctf_write_frame_m_block_memory, | |
829 | ctf_write_frame_v_block, | |
830 | ctf_write_frame_end, | |
831 | }; | |
832 | ||
833 | /* Operations to write trace buffers into CTF format. */ | |
834 | ||
835 | static const struct trace_file_write_ops ctf_write_ops = | |
836 | { | |
837 | ctf_dtor, | |
838 | ctf_target_save, | |
839 | ctf_start, | |
840 | ctf_write_header, | |
841 | ctf_write_regblock_type, | |
842 | ctf_write_status, | |
843 | ctf_write_uploaded_tsv, | |
844 | ctf_write_uploaded_tp, | |
845 | ctf_write_definition_end, | |
846 | NULL, | |
847 | &ctf_write_frame_ops, | |
848 | ctf_end, | |
849 | }; | |
850 | ||
851 | /* Return a trace writer for CTF format. */ | |
852 | ||
853 | struct trace_file_writer * | |
854 | ctf_trace_file_writer_new (void) | |
855 | { | |
856 | struct ctf_trace_file_writer *writer | |
857 | = xmalloc (sizeof (struct ctf_trace_file_writer)); | |
858 | ||
859 | writer->base.ops = &ctf_write_ops; | |
860 | ||
861 | return (struct trace_file_writer *) writer; | |
862 | } | |
393fd4c3 YQ |
863 | |
864 | #if HAVE_LIBBABELTRACE | |
865 | /* Use libbabeltrace to read CTF data. The libbabeltrace provides | |
866 | iterator to iterate over each event in CTF data and APIs to get | |
867 | details of event and packet, so it is very convenient to use | |
868 | libbabeltrace to access events in CTF. */ | |
869 | ||
870 | #include <babeltrace/babeltrace.h> | |
871 | #include <babeltrace/ctf/events.h> | |
872 | #include <babeltrace/ctf/iterator.h> | |
873 | ||
874 | /* The struct pointer for current CTF directory. */ | |
875 | static struct bt_context *ctx = NULL; | |
876 | static struct bt_ctf_iter *ctf_iter = NULL; | |
877 | /* The position of the first packet containing trace frame. */ | |
878 | static struct bt_iter_pos *start_pos; | |
879 | ||
880 | /* The name of CTF directory. */ | |
881 | static char *trace_dirname; | |
882 | ||
883 | static struct target_ops ctf_ops; | |
884 | ||
885 | /* Destroy ctf iterator and context. */ | |
886 | ||
887 | static void | |
888 | ctf_destroy (void) | |
889 | { | |
890 | if (ctf_iter != NULL) | |
891 | { | |
892 | bt_ctf_iter_destroy (ctf_iter); | |
893 | ctf_iter = NULL; | |
894 | } | |
895 | if (ctx != NULL) | |
896 | { | |
897 | bt_context_put (ctx); | |
898 | ctx = NULL; | |
899 | } | |
900 | } | |
901 | ||
902 | /* Open CTF trace data in DIRNAME. */ | |
903 | ||
904 | static void | |
905 | ctf_open_dir (char *dirname) | |
906 | { | |
907 | int ret; | |
908 | struct bt_iter_pos begin_pos; | |
909 | struct bt_iter_pos *pos; | |
910 | ||
911 | ctx = bt_context_create (); | |
912 | if (ctx == NULL) | |
913 | error (_("Unable to create bt_context")); | |
914 | ret = bt_context_add_trace (ctx, dirname, "ctf", NULL, NULL, NULL); | |
915 | if (ret < 0) | |
916 | { | |
917 | ctf_destroy (); | |
918 | error (_("Unable to use libbabeltrace on directory \"%s\""), | |
919 | dirname); | |
920 | } | |
921 | ||
922 | begin_pos.type = BT_SEEK_BEGIN; | |
923 | ctf_iter = bt_ctf_iter_create (ctx, &begin_pos, NULL); | |
924 | if (ctf_iter == NULL) | |
925 | { | |
926 | ctf_destroy (); | |
927 | error (_("Unable to create bt_iterator")); | |
928 | } | |
929 | ||
930 | /* Iterate over events, and look for an event for register block | |
931 | to set trace_regblock_size. */ | |
932 | ||
933 | /* Save the current position. */ | |
934 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
935 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
936 | ||
937 | while (1) | |
938 | { | |
939 | const char *name; | |
940 | struct bt_ctf_event *event; | |
941 | ||
942 | event = bt_ctf_iter_read_event (ctf_iter); | |
943 | ||
944 | name = bt_ctf_event_name (event); | |
945 | ||
946 | if (name == NULL) | |
947 | break; | |
948 | else if (strcmp (name, "register") == 0) | |
949 | { | |
950 | const struct bt_definition *scope | |
951 | = bt_ctf_get_top_level_scope (event, | |
952 | BT_EVENT_FIELDS); | |
953 | const struct bt_definition *array | |
954 | = bt_ctf_get_field (event, scope, "contents"); | |
955 | ||
956 | trace_regblock_size | |
957 | = bt_ctf_get_array_len (bt_ctf_get_decl_from_def (array)); | |
958 | } | |
959 | ||
960 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
961 | break; | |
962 | } | |
963 | ||
964 | /* Restore the position. */ | |
965 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
966 | } | |
967 | ||
968 | #define SET_INT32_FIELD(EVENT, SCOPE, VAR, FIELD) \ | |
969 | (VAR)->FIELD = (int) bt_ctf_get_int64 (bt_ctf_get_field ((EVENT), \ | |
970 | (SCOPE), \ | |
971 | #FIELD)) | |
972 | ||
973 | /* EVENT is the "status" event and TS is filled in. */ | |
974 | ||
975 | static void | |
976 | ctf_read_status (struct bt_ctf_event *event, struct trace_status *ts) | |
977 | { | |
978 | const struct bt_definition *scope | |
979 | = bt_ctf_get_top_level_scope (event, BT_EVENT_FIELDS); | |
980 | ||
981 | SET_INT32_FIELD (event, scope, ts, stop_reason); | |
982 | SET_INT32_FIELD (event, scope, ts, stopping_tracepoint); | |
983 | SET_INT32_FIELD (event, scope, ts, traceframe_count); | |
984 | SET_INT32_FIELD (event, scope, ts, traceframes_created); | |
985 | SET_INT32_FIELD (event, scope, ts, buffer_free); | |
986 | SET_INT32_FIELD (event, scope, ts, buffer_size); | |
987 | SET_INT32_FIELD (event, scope, ts, disconnected_tracing); | |
988 | SET_INT32_FIELD (event, scope, ts, circular_buffer); | |
989 | ||
990 | bt_iter_next (bt_ctf_get_iter (ctf_iter)); | |
991 | } | |
992 | ||
993 | /* Read the events "tsv_def" one by one, extract its contents and fill | |
994 | in the list UPLOADED_TSVS. */ | |
995 | ||
996 | static void | |
997 | ctf_read_tsv (struct uploaded_tsv **uploaded_tsvs) | |
998 | { | |
999 | gdb_assert (ctf_iter != NULL); | |
1000 | ||
1001 | while (1) | |
1002 | { | |
1003 | struct bt_ctf_event *event; | |
1004 | const struct bt_definition *scope; | |
1005 | const struct bt_definition *def; | |
1006 | uint32_t event_id; | |
1007 | struct uploaded_tsv *utsv = NULL; | |
1008 | ||
1009 | event = bt_ctf_iter_read_event (ctf_iter); | |
1010 | scope = bt_ctf_get_top_level_scope (event, | |
1011 | BT_STREAM_EVENT_HEADER); | |
1012 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, | |
1013 | "id")); | |
1014 | if (event_id != CTF_EVENT_ID_TSV_DEF) | |
1015 | break; | |
1016 | ||
1017 | scope = bt_ctf_get_top_level_scope (event, | |
1018 | BT_EVENT_FIELDS); | |
1019 | ||
1020 | def = bt_ctf_get_field (event, scope, "number"); | |
1021 | utsv = get_uploaded_tsv ((int32_t) bt_ctf_get_int64 (def), | |
1022 | uploaded_tsvs); | |
1023 | ||
1024 | def = bt_ctf_get_field (event, scope, "builtin"); | |
1025 | utsv->builtin = (int32_t) bt_ctf_get_int64 (def); | |
1026 | def = bt_ctf_get_field (event, scope, "initial_value"); | |
1027 | utsv->initial_value = bt_ctf_get_int64 (def); | |
1028 | ||
1029 | def = bt_ctf_get_field (event, scope, "name"); | |
1030 | utsv->name = xstrdup (bt_ctf_get_string (def)); | |
1031 | ||
1032 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1033 | break; | |
1034 | } | |
1035 | ||
1036 | } | |
1037 | ||
1038 | /* Read the value of element whose index is NUM from CTF and write it | |
1039 | to the corresponding VAR->ARRAY. */ | |
1040 | ||
1041 | #define SET_ARRAY_FIELD(EVENT, SCOPE, VAR, NUM, ARRAY) \ | |
1042 | do \ | |
1043 | { \ | |
1044 | uint32_t u32, i; \ | |
1045 | const struct bt_definition *def; \ | |
1046 | \ | |
1047 | u32 = (uint32_t) bt_ctf_get_uint64 (bt_ctf_get_field ((EVENT), \ | |
1048 | (SCOPE), \ | |
1049 | #NUM)); \ | |
1050 | def = bt_ctf_get_field ((EVENT), (SCOPE), #ARRAY); \ | |
1051 | for (i = 0; i < u32; i++) \ | |
1052 | { \ | |
1053 | const struct bt_definition *element \ | |
1054 | = bt_ctf_get_index ((EVENT), def, i); \ | |
1055 | \ | |
1056 | VEC_safe_push (char_ptr, (VAR)->ARRAY, \ | |
1057 | xstrdup (bt_ctf_get_string (element))); \ | |
1058 | } \ | |
1059 | } \ | |
1060 | while (0) | |
1061 | ||
1062 | /* Read a string from CTF and set VAR->FIELD. If the length of string | |
1063 | is zero, set VAR->FIELD to NULL. */ | |
1064 | ||
1065 | #define SET_STRING_FIELD(EVENT, SCOPE, VAR, FIELD) \ | |
1066 | do \ | |
1067 | { \ | |
1068 | const char *p = bt_ctf_get_string (bt_ctf_get_field ((EVENT), \ | |
1069 | (SCOPE), \ | |
1070 | #FIELD)); \ | |
1071 | \ | |
1072 | if (strlen (p) > 0) \ | |
1073 | (VAR)->FIELD = xstrdup (p); \ | |
1074 | else \ | |
1075 | (VAR)->FIELD = NULL; \ | |
1076 | } \ | |
1077 | while (0) | |
1078 | ||
1079 | /* Read the events "tp_def" one by one, extract its contents and fill | |
1080 | in the list UPLOADED_TPS. */ | |
1081 | ||
1082 | static void | |
1083 | ctf_read_tp (struct uploaded_tp **uploaded_tps) | |
1084 | { | |
1085 | gdb_assert (ctf_iter != NULL); | |
1086 | ||
1087 | while (1) | |
1088 | { | |
1089 | struct bt_ctf_event *event; | |
1090 | const struct bt_definition *scope; | |
1091 | uint32_t u32; | |
1092 | int32_t int32; | |
1093 | uint64_t u64; | |
1094 | struct uploaded_tp *utp = NULL; | |
1095 | ||
1096 | event = bt_ctf_iter_read_event (ctf_iter); | |
1097 | scope = bt_ctf_get_top_level_scope (event, | |
1098 | BT_STREAM_EVENT_HEADER); | |
1099 | u32 = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, | |
1100 | "id")); | |
1101 | if (u32 != CTF_EVENT_ID_TP_DEF) | |
1102 | break; | |
1103 | ||
1104 | scope = bt_ctf_get_top_level_scope (event, | |
1105 | BT_EVENT_FIELDS); | |
1106 | int32 = (int32_t) bt_ctf_get_int64 (bt_ctf_get_field (event, | |
1107 | scope, | |
1108 | "number")); | |
1109 | u64 = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, | |
1110 | "addr")); | |
1111 | utp = get_uploaded_tp (int32, u64, uploaded_tps); | |
1112 | ||
1113 | SET_INT32_FIELD (event, scope, utp, enabled); | |
1114 | SET_INT32_FIELD (event, scope, utp, step); | |
1115 | SET_INT32_FIELD (event, scope, utp, pass); | |
1116 | SET_INT32_FIELD (event, scope, utp, hit_count); | |
1117 | SET_INT32_FIELD (event, scope, utp, type); | |
1118 | ||
1119 | /* Read 'cmd_strings'. */ | |
1120 | SET_ARRAY_FIELD (event, scope, utp, cmd_num, cmd_strings); | |
1121 | /* Read 'actions'. */ | |
1122 | SET_ARRAY_FIELD (event, scope, utp, action_num, actions); | |
1123 | /* Read 'step_actions'. */ | |
1124 | SET_ARRAY_FIELD (event, scope, utp, step_action_num, | |
1125 | step_actions); | |
1126 | ||
1127 | SET_STRING_FIELD(event, scope, utp, at_string); | |
1128 | SET_STRING_FIELD(event, scope, utp, cond_string); | |
1129 | ||
1130 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1131 | break; | |
1132 | } | |
1133 | } | |
1134 | ||
1135 | /* This is the implementation of target_ops method to_open. Open CTF | |
1136 | trace data, read trace status, trace state variables and tracepoint | |
1137 | definitions from the first packet. Set the start position at the | |
1138 | second packet which contains events on trace blocks. */ | |
1139 | ||
1140 | static void | |
1141 | ctf_open (char *dirname, int from_tty) | |
1142 | { | |
1143 | struct bt_ctf_event *event; | |
1144 | uint32_t event_id; | |
1145 | const struct bt_definition *scope; | |
1146 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
1147 | struct uploaded_tp *uploaded_tps = NULL; | |
1148 | ||
1149 | if (!dirname) | |
1150 | error (_("No CTF directory specified.")); | |
1151 | ||
1152 | ctf_open_dir (dirname); | |
1153 | ||
1154 | target_preopen (from_tty); | |
1155 | ||
1156 | /* Skip the first packet which about the trace status. The first | |
1157 | event is "frame". */ | |
1158 | event = bt_ctf_iter_read_event (ctf_iter); | |
1159 | scope = bt_ctf_get_top_level_scope (event, BT_STREAM_EVENT_HEADER); | |
1160 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "id")); | |
1161 | if (event_id != CTF_EVENT_ID_FRAME) | |
1162 | error (_("Wrong event id of the first event")); | |
1163 | /* The second event is "status". */ | |
1164 | bt_iter_next (bt_ctf_get_iter (ctf_iter)); | |
1165 | event = bt_ctf_iter_read_event (ctf_iter); | |
1166 | scope = bt_ctf_get_top_level_scope (event, BT_STREAM_EVENT_HEADER); | |
1167 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "id")); | |
1168 | if (event_id != CTF_EVENT_ID_STATUS) | |
1169 | error (_("Wrong event id of the second event")); | |
1170 | ctf_read_status (event, current_trace_status ()); | |
1171 | ||
1172 | ctf_read_tsv (&uploaded_tsvs); | |
1173 | ||
1174 | ctf_read_tp (&uploaded_tps); | |
1175 | ||
1176 | event = bt_ctf_iter_read_event (ctf_iter); | |
1177 | /* EVENT can be NULL if we've already gone to the end of stream of | |
1178 | events. */ | |
1179 | if (event != NULL) | |
1180 | { | |
1181 | scope = bt_ctf_get_top_level_scope (event, | |
1182 | BT_STREAM_EVENT_HEADER); | |
1183 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, | |
1184 | scope, "id")); | |
1185 | if (event_id != CTF_EVENT_ID_FRAME) | |
1186 | error (_("Wrong event id of the first event of the second packet")); | |
1187 | } | |
1188 | ||
1189 | start_pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1190 | gdb_assert (start_pos->type == BT_SEEK_RESTORE); | |
1191 | ||
1192 | trace_dirname = xstrdup (dirname); | |
1193 | push_target (&ctf_ops); | |
1194 | ||
de7b2893 YQ |
1195 | inferior_appeared (current_inferior (), CTF_PID); |
1196 | inferior_ptid = pid_to_ptid (CTF_PID); | |
1197 | add_thread_silent (inferior_ptid); | |
1198 | ||
393fd4c3 YQ |
1199 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
1200 | merge_uploaded_tracepoints (&uploaded_tps); | |
1201 | } | |
1202 | ||
1203 | /* This is the implementation of target_ops method to_close. Destroy | |
1204 | CTF iterator and context. */ | |
1205 | ||
1206 | static void | |
de90e03d | 1207 | ctf_close (struct target_ops *self) |
393fd4c3 | 1208 | { |
de7b2893 YQ |
1209 | int pid; |
1210 | ||
393fd4c3 YQ |
1211 | ctf_destroy (); |
1212 | xfree (trace_dirname); | |
1213 | trace_dirname = NULL; | |
aef525cb | 1214 | |
de7b2893 YQ |
1215 | pid = ptid_get_pid (inferior_ptid); |
1216 | inferior_ptid = null_ptid; /* Avoid confusion from thread stuff. */ | |
1217 | exit_inferior_silent (pid); | |
1218 | ||
aef525cb | 1219 | trace_reset_local_state (); |
393fd4c3 YQ |
1220 | } |
1221 | ||
1222 | /* This is the implementation of target_ops method to_files_info. | |
1223 | Print the directory name of CTF trace data. */ | |
1224 | ||
1225 | static void | |
1226 | ctf_files_info (struct target_ops *t) | |
1227 | { | |
1228 | printf_filtered ("\t`%s'\n", trace_dirname); | |
1229 | } | |
1230 | ||
1231 | /* This is the implementation of target_ops method to_fetch_registers. | |
1232 | Iterate over events whose name is "register" in current frame, | |
1233 | extract contents from events, and set REGCACHE with the contents. | |
1234 | If no matched events are found, mark registers unavailable. */ | |
1235 | ||
1236 | static void | |
1237 | ctf_fetch_registers (struct target_ops *ops, | |
1238 | struct regcache *regcache, int regno) | |
1239 | { | |
1240 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
1241 | int offset, regn, regsize, pc_regno; | |
8b4833e3 | 1242 | gdb_byte *regs = NULL; |
393fd4c3 YQ |
1243 | struct bt_ctf_event *event = NULL; |
1244 | struct bt_iter_pos *pos; | |
1245 | ||
1246 | /* An uninitialized reg size says we're not going to be | |
1247 | successful at getting register blocks. */ | |
1248 | if (trace_regblock_size == 0) | |
1249 | return; | |
1250 | ||
1251 | gdb_assert (ctf_iter != NULL); | |
1252 | /* Save the current position. */ | |
1253 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1254 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1255 | ||
1256 | while (1) | |
1257 | { | |
1258 | const char *name; | |
1259 | struct bt_ctf_event *event1; | |
1260 | ||
1261 | event1 = bt_ctf_iter_read_event (ctf_iter); | |
1262 | ||
1263 | name = bt_ctf_event_name (event1); | |
1264 | ||
1265 | if (name == NULL || strcmp (name, "frame") == 0) | |
1266 | break; | |
1267 | else if (strcmp (name, "register") == 0) | |
1268 | { | |
1269 | event = event1; | |
1270 | break; | |
1271 | } | |
1272 | ||
1273 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1274 | break; | |
1275 | } | |
1276 | ||
1277 | /* Restore the position. */ | |
1278 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1279 | ||
1280 | if (event != NULL) | |
1281 | { | |
1282 | const struct bt_definition *scope | |
1283 | = bt_ctf_get_top_level_scope (event, | |
1284 | BT_EVENT_FIELDS); | |
1285 | const struct bt_definition *array | |
1286 | = bt_ctf_get_field (event, scope, "contents"); | |
1287 | ||
8b4833e3 | 1288 | regs = (gdb_byte *) bt_ctf_get_char_array (array); |
393fd4c3 YQ |
1289 | /* Assume the block is laid out in GDB register number order, |
1290 | each register with the size that it has in GDB. */ | |
1291 | offset = 0; | |
1292 | for (regn = 0; regn < gdbarch_num_regs (gdbarch); regn++) | |
1293 | { | |
1294 | regsize = register_size (gdbarch, regn); | |
1295 | /* Make sure we stay within block bounds. */ | |
1296 | if (offset + regsize >= trace_regblock_size) | |
1297 | break; | |
1298 | if (regcache_register_status (regcache, regn) == REG_UNKNOWN) | |
1299 | { | |
1300 | if (regno == regn) | |
1301 | { | |
1302 | regcache_raw_supply (regcache, regno, regs + offset); | |
1303 | break; | |
1304 | } | |
1305 | else if (regno == -1) | |
1306 | { | |
1307 | regcache_raw_supply (regcache, regn, regs + offset); | |
1308 | } | |
1309 | } | |
1310 | offset += regsize; | |
1311 | } | |
1312 | return; | |
1313 | } | |
1314 | ||
1315 | regs = alloca (trace_regblock_size); | |
1316 | ||
1317 | /* We get here if no register data has been found. Mark registers | |
1318 | as unavailable. */ | |
1319 | for (regn = 0; regn < gdbarch_num_regs (gdbarch); regn++) | |
1320 | regcache_raw_supply (regcache, regn, NULL); | |
1321 | ||
1322 | /* We can often usefully guess that the PC is going to be the same | |
1323 | as the address of the tracepoint. */ | |
1324 | pc_regno = gdbarch_pc_regnum (gdbarch); | |
1325 | if (pc_regno >= 0 && (regno == -1 || regno == pc_regno)) | |
1326 | { | |
1327 | struct tracepoint *tp = get_tracepoint (get_tracepoint_number ()); | |
1328 | ||
1329 | if (tp != NULL && tp->base.loc) | |
1330 | { | |
1331 | /* But don't try to guess if tracepoint is multi-location... */ | |
1332 | if (tp->base.loc->next != NULL) | |
1333 | { | |
1334 | warning (_("Tracepoint %d has multiple " | |
1335 | "locations, cannot infer $pc"), | |
1336 | tp->base.number); | |
1337 | return; | |
1338 | } | |
1339 | /* ... or does while-stepping. */ | |
1340 | if (tp->step_count > 0) | |
1341 | { | |
1342 | warning (_("Tracepoint %d does while-stepping, " | |
1343 | "cannot infer $pc"), | |
1344 | tp->base.number); | |
1345 | return; | |
1346 | } | |
1347 | ||
1348 | store_unsigned_integer (regs, register_size (gdbarch, pc_regno), | |
1349 | gdbarch_byte_order (gdbarch), | |
1350 | tp->base.loc->address); | |
1351 | regcache_raw_supply (regcache, pc_regno, regs); | |
1352 | } | |
1353 | } | |
1354 | } | |
1355 | ||
1356 | /* This is the implementation of target_ops method to_xfer_partial. | |
1357 | Iterate over events whose name is "memory" in | |
1358 | current frame, extract the address and length from events. If | |
1359 | OFFSET is within the range, read the contents from events to | |
1360 | READBUF. */ | |
1361 | ||
9b409511 | 1362 | static enum target_xfer_status |
393fd4c3 YQ |
1363 | ctf_xfer_partial (struct target_ops *ops, enum target_object object, |
1364 | const char *annex, gdb_byte *readbuf, | |
1365 | const gdb_byte *writebuf, ULONGEST offset, | |
9b409511 | 1366 | ULONGEST len, ULONGEST *xfered_len) |
393fd4c3 YQ |
1367 | { |
1368 | /* We're only doing regular memory for now. */ | |
1369 | if (object != TARGET_OBJECT_MEMORY) | |
1370 | return -1; | |
1371 | ||
1372 | if (readbuf == NULL) | |
1373 | error (_("ctf_xfer_partial: trace file is read-only")); | |
1374 | ||
1375 | if (get_traceframe_number () != -1) | |
1376 | { | |
1377 | struct bt_iter_pos *pos; | |
1378 | int i = 0; | |
1379 | ||
1380 | gdb_assert (ctf_iter != NULL); | |
1381 | /* Save the current position. */ | |
1382 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1383 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1384 | ||
1385 | /* Iterate through the traceframe's blocks, looking for | |
1386 | memory. */ | |
1387 | while (1) | |
1388 | { | |
1389 | ULONGEST amt; | |
1390 | uint64_t maddr; | |
1391 | uint16_t mlen; | |
1392 | enum bfd_endian byte_order | |
1393 | = gdbarch_byte_order (target_gdbarch ()); | |
1394 | const struct bt_definition *scope; | |
1395 | const struct bt_definition *def; | |
1396 | struct bt_ctf_event *event | |
1397 | = bt_ctf_iter_read_event (ctf_iter); | |
1398 | const char *name = bt_ctf_event_name (event); | |
1399 | ||
1400 | if (strcmp (name, "frame") == 0) | |
1401 | break; | |
1402 | else if (strcmp (name, "memory") != 0) | |
1403 | { | |
1404 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1405 | break; | |
1406 | ||
1407 | continue; | |
1408 | } | |
1409 | ||
1410 | scope = bt_ctf_get_top_level_scope (event, | |
1411 | BT_EVENT_FIELDS); | |
1412 | ||
1413 | def = bt_ctf_get_field (event, scope, "address"); | |
1414 | maddr = bt_ctf_get_uint64 (def); | |
1415 | def = bt_ctf_get_field (event, scope, "length"); | |
1416 | mlen = (uint16_t) bt_ctf_get_uint64 (def); | |
1417 | ||
1418 | /* If the block includes the first part of the desired | |
1419 | range, return as much it has; GDB will re-request the | |
1420 | remainder, which might be in a different block of this | |
1421 | trace frame. */ | |
1422 | if (maddr <= offset && offset < (maddr + mlen)) | |
1423 | { | |
1424 | const struct bt_definition *array | |
1425 | = bt_ctf_get_field (event, scope, "contents"); | |
1426 | const struct bt_declaration *decl | |
1427 | = bt_ctf_get_decl_from_def (array); | |
1428 | gdb_byte *contents; | |
1429 | int k; | |
1430 | ||
1431 | contents = xmalloc (mlen); | |
1432 | ||
1433 | for (k = 0; k < mlen; k++) | |
1434 | { | |
1435 | const struct bt_definition *element | |
1436 | = bt_ctf_get_index (event, array, k); | |
1437 | ||
1438 | contents[k] = (gdb_byte) bt_ctf_get_uint64 (element); | |
1439 | } | |
1440 | ||
1441 | amt = (maddr + mlen) - offset; | |
1442 | if (amt > len) | |
1443 | amt = len; | |
1444 | ||
1445 | memcpy (readbuf, &contents[offset - maddr], amt); | |
1446 | ||
1447 | xfree (contents); | |
1448 | ||
1449 | /* Restore the position. */ | |
1450 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1451 | ||
9b409511 YQ |
1452 | if (amt == 0) |
1453 | return TARGET_XFER_EOF; | |
1454 | else | |
1455 | { | |
1456 | *xfered_len = amt; | |
1457 | return TARGET_XFER_OK; | |
1458 | } | |
393fd4c3 YQ |
1459 | } |
1460 | ||
1461 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1462 | break; | |
1463 | } | |
1464 | ||
1465 | /* Restore the position. */ | |
1466 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1467 | } | |
1468 | ||
1469 | /* It's unduly pedantic to refuse to look at the executable for | |
1470 | read-only pieces; so do the equivalent of readonly regions aka | |
1471 | QTro packet. */ | |
1472 | if (exec_bfd != NULL) | |
1473 | { | |
1474 | asection *s; | |
1475 | bfd_size_type size; | |
1476 | bfd_vma vma; | |
1477 | ||
1478 | for (s = exec_bfd->sections; s; s = s->next) | |
1479 | { | |
1480 | if ((s->flags & SEC_LOAD) == 0 | |
1481 | || (s->flags & SEC_READONLY) == 0) | |
1482 | continue; | |
1483 | ||
1484 | vma = s->vma; | |
1485 | size = bfd_get_section_size (s); | |
1486 | if (vma <= offset && offset < (vma + size)) | |
1487 | { | |
1488 | ULONGEST amt; | |
1489 | ||
1490 | amt = (vma + size) - offset; | |
1491 | if (amt > len) | |
1492 | amt = len; | |
1493 | ||
1494 | amt = bfd_get_section_contents (exec_bfd, s, | |
1495 | readbuf, offset - vma, amt); | |
9b409511 YQ |
1496 | |
1497 | if (amt == 0) | |
1498 | return TARGET_XFER_EOF; | |
1499 | else | |
1500 | { | |
1501 | *xfered_len = amt; | |
1502 | return TARGET_XFER_OK; | |
1503 | } | |
393fd4c3 YQ |
1504 | } |
1505 | } | |
1506 | } | |
1507 | ||
1508 | /* Indicate failure to find the requested memory block. */ | |
2ed4b548 | 1509 | return TARGET_XFER_E_IO; |
393fd4c3 YQ |
1510 | } |
1511 | ||
1512 | /* This is the implementation of target_ops method | |
1513 | to_get_trace_state_variable_value. | |
1514 | Iterate over events whose name is "tsv" in current frame. When the | |
1515 | trace variable is found, set the value of it to *VAL and return | |
1516 | true, otherwise return false. */ | |
1517 | ||
1518 | static int | |
1519 | ctf_get_trace_state_variable_value (int tsvnum, LONGEST *val) | |
1520 | { | |
1521 | struct bt_iter_pos *pos; | |
1522 | int found = 0; | |
1523 | ||
1524 | gdb_assert (ctf_iter != NULL); | |
1525 | /* Save the current position. */ | |
1526 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1527 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1528 | ||
1529 | /* Iterate through the traceframe's blocks, looking for 'V' | |
1530 | block. */ | |
1531 | while (1) | |
1532 | { | |
1533 | struct bt_ctf_event *event | |
1534 | = bt_ctf_iter_read_event (ctf_iter); | |
1535 | const char *name = bt_ctf_event_name (event); | |
1536 | ||
1537 | if (name == NULL || strcmp (name, "frame") == 0) | |
1538 | break; | |
1539 | else if (strcmp (name, "tsv") == 0) | |
1540 | { | |
1541 | const struct bt_definition *scope; | |
1542 | const struct bt_definition *def; | |
1543 | ||
1544 | scope = bt_ctf_get_top_level_scope (event, | |
1545 | BT_EVENT_FIELDS); | |
1546 | ||
1547 | def = bt_ctf_get_field (event, scope, "num"); | |
1548 | if (tsvnum == (int32_t) bt_ctf_get_uint64 (def)) | |
1549 | { | |
1550 | def = bt_ctf_get_field (event, scope, "val"); | |
1551 | *val = bt_ctf_get_uint64 (def); | |
1552 | ||
1553 | found = 1; | |
1554 | } | |
1555 | } | |
1556 | ||
1557 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1558 | break; | |
1559 | } | |
1560 | ||
1561 | /* Restore the position. */ | |
1562 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1563 | ||
1564 | return found; | |
1565 | } | |
1566 | ||
1567 | /* Return the tracepoint number in "frame" event. */ | |
1568 | ||
1569 | static int | |
1570 | ctf_get_tpnum_from_frame_event (struct bt_ctf_event *event) | |
1571 | { | |
1572 | /* The packet context of events has a field "tpnum". */ | |
1573 | const struct bt_definition *scope | |
1574 | = bt_ctf_get_top_level_scope (event, BT_STREAM_PACKET_CONTEXT); | |
1575 | uint64_t tpnum | |
1576 | = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "tpnum")); | |
1577 | ||
1578 | return (int) tpnum; | |
1579 | } | |
1580 | ||
1581 | /* Return the address at which the current frame was collected. */ | |
1582 | ||
1583 | static CORE_ADDR | |
1584 | ctf_get_traceframe_address (void) | |
1585 | { | |
1586 | struct bt_ctf_event *event = NULL; | |
1587 | struct bt_iter_pos *pos; | |
1588 | CORE_ADDR addr = 0; | |
1589 | ||
1590 | gdb_assert (ctf_iter != NULL); | |
1591 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1592 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1593 | ||
1594 | while (1) | |
1595 | { | |
1596 | const char *name; | |
1597 | struct bt_ctf_event *event1; | |
1598 | ||
1599 | event1 = bt_ctf_iter_read_event (ctf_iter); | |
1600 | ||
1601 | name = bt_ctf_event_name (event1); | |
1602 | ||
1603 | if (name == NULL) | |
1604 | break; | |
1605 | else if (strcmp (name, "frame") == 0) | |
1606 | { | |
1607 | event = event1; | |
1608 | break; | |
1609 | } | |
1610 | ||
1611 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1612 | break; | |
1613 | } | |
1614 | ||
1615 | if (event != NULL) | |
1616 | { | |
1617 | int tpnum = ctf_get_tpnum_from_frame_event (event); | |
1618 | struct tracepoint *tp | |
1619 | = get_tracepoint_by_number_on_target (tpnum); | |
1620 | ||
1621 | if (tp && tp->base.loc) | |
1622 | addr = tp->base.loc->address; | |
1623 | } | |
1624 | ||
1625 | /* Restore the position. */ | |
1626 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1627 | ||
1628 | return addr; | |
1629 | } | |
1630 | ||
1631 | /* This is the implementation of target_ops method to_trace_find. | |
1632 | Iterate the events whose name is "frame", extract the tracepoint | |
1633 | number in it. Return traceframe number when matched. */ | |
1634 | ||
1635 | static int | |
1636 | ctf_trace_find (enum trace_find_type type, int num, | |
1637 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) | |
1638 | { | |
1639 | int ret = -1; | |
1640 | int tfnum = 0; | |
1641 | int found = 0; | |
1642 | struct bt_iter_pos pos; | |
1643 | ||
1644 | if (num == -1) | |
1645 | { | |
1646 | if (tpp != NULL) | |
1647 | *tpp = -1; | |
1648 | return -1; | |
1649 | } | |
1650 | ||
1651 | gdb_assert (ctf_iter != NULL); | |
1652 | /* Set iterator back to the start. */ | |
1653 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), start_pos); | |
1654 | ||
1655 | while (1) | |
1656 | { | |
1657 | int id; | |
1658 | struct bt_ctf_event *event; | |
1659 | const char *name; | |
1660 | ||
1661 | event = bt_ctf_iter_read_event (ctf_iter); | |
1662 | ||
1663 | name = bt_ctf_event_name (event); | |
1664 | ||
1665 | if (event == NULL || name == NULL) | |
1666 | break; | |
1667 | ||
1668 | if (strcmp (name, "frame") == 0) | |
1669 | { | |
1670 | CORE_ADDR tfaddr; | |
1671 | ||
1672 | if (type == tfind_number) | |
1673 | { | |
1674 | /* Looking for a specific trace frame. */ | |
1675 | if (tfnum == num) | |
1676 | found = 1; | |
1677 | } | |
1678 | else | |
1679 | { | |
1680 | /* Start from the _next_ trace frame. */ | |
1681 | if (tfnum > get_traceframe_number ()) | |
1682 | { | |
1683 | switch (type) | |
1684 | { | |
1685 | case tfind_tp: | |
1686 | { | |
1687 | struct tracepoint *tp = get_tracepoint (num); | |
1688 | ||
1689 | if (tp != NULL | |
1690 | && (tp->number_on_target | |
1691 | == ctf_get_tpnum_from_frame_event (event))) | |
1692 | found = 1; | |
1693 | break; | |
1694 | } | |
1695 | case tfind_pc: | |
1696 | tfaddr = ctf_get_traceframe_address (); | |
1697 | if (tfaddr == addr1) | |
1698 | found = 1; | |
1699 | break; | |
1700 | case tfind_range: | |
1701 | tfaddr = ctf_get_traceframe_address (); | |
1702 | if (addr1 <= tfaddr && tfaddr <= addr2) | |
1703 | found = 1; | |
1704 | break; | |
1705 | case tfind_outside: | |
1706 | tfaddr = ctf_get_traceframe_address (); | |
1707 | if (!(addr1 <= tfaddr && tfaddr <= addr2)) | |
1708 | found = 1; | |
1709 | break; | |
1710 | default: | |
1711 | internal_error (__FILE__, __LINE__, _("unknown tfind type")); | |
1712 | } | |
1713 | } | |
1714 | } | |
1715 | if (found) | |
1716 | { | |
1717 | if (tpp != NULL) | |
1718 | *tpp = ctf_get_tpnum_from_frame_event (event); | |
1719 | ||
1720 | /* Skip the event "frame". */ | |
1721 | bt_iter_next (bt_ctf_get_iter (ctf_iter)); | |
1722 | ||
1723 | return tfnum; | |
1724 | } | |
1725 | tfnum++; | |
1726 | } | |
1727 | ||
1728 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1729 | break; | |
1730 | } | |
1731 | ||
1732 | return -1; | |
1733 | } | |
1734 | ||
1735 | /* This is the implementation of target_ops method to_has_stack. | |
1736 | The target has a stack when GDB has already selected one trace | |
1737 | frame. */ | |
1738 | ||
1739 | static int | |
1740 | ctf_has_stack (struct target_ops *ops) | |
1741 | { | |
1742 | return get_traceframe_number () != -1; | |
1743 | } | |
1744 | ||
1745 | /* This is the implementation of target_ops method to_has_registers. | |
1746 | The target has registers when GDB has already selected one trace | |
1747 | frame. */ | |
1748 | ||
1749 | static int | |
1750 | ctf_has_registers (struct target_ops *ops) | |
1751 | { | |
1752 | return get_traceframe_number () != -1; | |
1753 | } | |
1754 | ||
de7b2893 YQ |
1755 | /* This is the implementation of target_ops method to_thread_alive. |
1756 | CTF trace data has one thread faked by GDB. */ | |
1757 | ||
1758 | static int | |
1759 | ctf_thread_alive (struct target_ops *ops, ptid_t ptid) | |
1760 | { | |
1761 | return 1; | |
1762 | } | |
1763 | ||
393fd4c3 YQ |
1764 | /* This is the implementation of target_ops method to_traceframe_info. |
1765 | Iterate the events whose name is "memory", in current | |
1766 | frame, extract memory range information, and return them in | |
1767 | traceframe_info. */ | |
1768 | ||
1769 | static struct traceframe_info * | |
1770 | ctf_traceframe_info (void) | |
1771 | { | |
1772 | struct traceframe_info *info = XCNEW (struct traceframe_info); | |
1773 | const char *name; | |
1774 | struct bt_iter_pos *pos; | |
1775 | ||
1776 | gdb_assert (ctf_iter != NULL); | |
1777 | /* Save the current position. */ | |
1778 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1779 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1780 | ||
1781 | do | |
1782 | { | |
1783 | struct bt_ctf_event *event | |
1784 | = bt_ctf_iter_read_event (ctf_iter); | |
1785 | ||
1786 | name = bt_ctf_event_name (event); | |
1787 | ||
1788 | if (name == NULL || strcmp (name, "register") == 0 | |
1789 | || strcmp (name, "frame") == 0) | |
1790 | ; | |
1791 | else if (strcmp (name, "memory") == 0) | |
1792 | { | |
1793 | const struct bt_definition *scope | |
1794 | = bt_ctf_get_top_level_scope (event, | |
1795 | BT_EVENT_FIELDS); | |
1796 | const struct bt_definition *def; | |
1797 | struct mem_range *r; | |
1798 | ||
1799 | r = VEC_safe_push (mem_range_s, info->memory, NULL); | |
1800 | def = bt_ctf_get_field (event, scope, "address"); | |
1801 | r->start = bt_ctf_get_uint64 (def); | |
1802 | ||
1803 | def = bt_ctf_get_field (event, scope, "length"); | |
1804 | r->length = (uint16_t) bt_ctf_get_uint64 (def); | |
1805 | } | |
28a93511 YQ |
1806 | else if (strcmp (name, "tsv") == 0) |
1807 | { | |
1808 | int vnum; | |
1809 | const struct bt_definition *scope | |
1810 | = bt_ctf_get_top_level_scope (event, | |
1811 | BT_EVENT_FIELDS); | |
1812 | const struct bt_definition *def; | |
1813 | ||
1814 | def = bt_ctf_get_field (event, scope, "num"); | |
1815 | vnum = (int) bt_ctf_get_int64 (def); | |
1816 | VEC_safe_push (int, info->tvars, vnum); | |
1817 | } | |
393fd4c3 YQ |
1818 | else |
1819 | { | |
1820 | warning (_("Unhandled trace block type (%s) " | |
1821 | "while building trace frame info."), | |
1822 | name); | |
1823 | } | |
1824 | ||
1825 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1826 | break; | |
1827 | } | |
1828 | while (name != NULL && strcmp (name, "frame") != 0); | |
1829 | ||
1830 | /* Restore the position. */ | |
1831 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1832 | ||
1833 | return info; | |
1834 | } | |
1835 | ||
1836 | /* This is the implementation of target_ops method to_get_trace_status. | |
1837 | The trace status for a file is that tracing can never be run. */ | |
1838 | ||
1839 | static int | |
1840 | ctf_get_trace_status (struct trace_status *ts) | |
1841 | { | |
1842 | /* Other bits of trace status were collected as part of opening the | |
1843 | trace files, so nothing to do here. */ | |
1844 | ||
1845 | return -1; | |
1846 | } | |
1847 | ||
1848 | static void | |
1849 | init_ctf_ops (void) | |
1850 | { | |
1851 | memset (&ctf_ops, 0, sizeof (ctf_ops)); | |
1852 | ||
1853 | ctf_ops.to_shortname = "ctf"; | |
1854 | ctf_ops.to_longname = "CTF file"; | |
1855 | ctf_ops.to_doc = "Use a CTF directory as a target.\n\ | |
1856 | Specify the filename of the CTF directory."; | |
1857 | ctf_ops.to_open = ctf_open; | |
1858 | ctf_ops.to_close = ctf_close; | |
1859 | ctf_ops.to_fetch_registers = ctf_fetch_registers; | |
1860 | ctf_ops.to_xfer_partial = ctf_xfer_partial; | |
1861 | ctf_ops.to_files_info = ctf_files_info; | |
1862 | ctf_ops.to_get_trace_status = ctf_get_trace_status; | |
1863 | ctf_ops.to_trace_find = ctf_trace_find; | |
1864 | ctf_ops.to_get_trace_state_variable_value | |
1865 | = ctf_get_trace_state_variable_value; | |
1866 | ctf_ops.to_stratum = process_stratum; | |
1867 | ctf_ops.to_has_stack = ctf_has_stack; | |
1868 | ctf_ops.to_has_registers = ctf_has_registers; | |
1869 | ctf_ops.to_traceframe_info = ctf_traceframe_info; | |
de7b2893 | 1870 | ctf_ops.to_thread_alive = ctf_thread_alive; |
393fd4c3 YQ |
1871 | ctf_ops.to_magic = OPS_MAGIC; |
1872 | } | |
1873 | ||
1874 | #endif | |
1875 | ||
1876 | /* -Wmissing-prototypes */ | |
1877 | ||
1878 | extern initialize_file_ftype _initialize_ctf; | |
1879 | ||
1880 | /* module initialization */ | |
1881 | ||
1882 | void | |
1883 | _initialize_ctf (void) | |
1884 | { | |
1885 | #if HAVE_LIBBABELTRACE | |
1886 | init_ctf_ops (); | |
1887 | ||
da9160e4 | 1888 | add_target_with_completer (&ctf_ops, filename_completer); |
393fd4c3 YQ |
1889 | #endif |
1890 | } |