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d0353e76 YQ |
1 | /* CTF format support. |
2 | ||
e2882c85 | 3 | Copyright (C) 2012-2018 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 | 32 | #include <ctype.h> |
325fac50 | 33 | #include <algorithm> |
d0353e76 | 34 | |
f6ac5f3d PA |
35 | /* The CTF target. */ |
36 | ||
d9f719f1 PA |
37 | static const target_info ctf_target_info = { |
38 | "ctf", | |
39 | N_("CTF file"), | |
40 | N_("(Use a CTF directory as a target.\n\ | |
41 | Specify the filename of the CTF directory.") | |
42 | }; | |
43 | ||
f6ac5f3d PA |
44 | class ctf_target final : public tracefile_target |
45 | { | |
46 | public: | |
d9f719f1 PA |
47 | const target_info &info () const override |
48 | { return ctf_target_info; } | |
f6ac5f3d | 49 | |
f6ac5f3d PA |
50 | void close () override; |
51 | void fetch_registers (struct regcache *, int) override; | |
52 | enum target_xfer_status xfer_partial (enum target_object object, | |
53 | const char *annex, | |
54 | gdb_byte *readbuf, | |
55 | const gdb_byte *writebuf, | |
56 | ULONGEST offset, ULONGEST len, | |
57 | ULONGEST *xfered_len) override; | |
58 | void files_info () override; | |
59 | int trace_find (enum trace_find_type type, int num, | |
60 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
57810aa7 | 61 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
62 | traceframe_info_up traceframe_info () override; |
63 | }; | |
64 | ||
d0353e76 YQ |
65 | /* GDB saves trace buffers and other information (such as trace |
66 | status) got from the remote target into Common Trace Format (CTF). | |
67 | The following types of information are expected to save in CTF: | |
68 | ||
69 | 1. The length (in bytes) of register cache. Event "register" will | |
70 | be defined in metadata, which includes the length. | |
71 | ||
393fd4c3 YQ |
72 | 2. Trace status. Event "status" is defined in metadata, which |
73 | includes all aspects of trace status. | |
d0353e76 | 74 | |
393fd4c3 YQ |
75 | 3. Uploaded trace variables. Event "tsv_def" is defined in |
76 | metadata, which is about all aspects of a uploaded trace variable. | |
77 | Uploaded tracepoints. Event "tp_def" is defined in meta, which | |
78 | is about all aspects of an uploaded tracepoint. Note that the | |
79 | "sequence" (a CTF type, which is a dynamically-sized array.) is | |
80 | used for "actions" "step_actions" and "cmd_strings". | |
d0353e76 YQ |
81 | |
82 | 4. Trace frames. Each trace frame is composed by several blocks | |
83 | of different types ('R', 'M', 'V'). One trace frame is saved in | |
84 | one CTF packet and the blocks of this frame are saved as events. | |
85 | 4.1: The trace frame related information (such as the number of | |
86 | tracepoint associated with this frame) is saved in the packet | |
87 | context. | |
88 | 4.2: The block 'M', 'R' and 'V' are saved in event "memory", | |
89 | "register" and "tsv" respectively. | |
90 | 4.3: When iterating over events, babeltrace can't tell iterator | |
91 | goes to a new packet, so we need a marker or anchor to tell GDB | |
92 | that iterator goes into a new packet or frame. We define event | |
93 | "frame". */ | |
94 | ||
95 | #define CTF_MAGIC 0xC1FC1FC1 | |
96 | #define CTF_SAVE_MAJOR 1 | |
97 | #define CTF_SAVE_MINOR 8 | |
98 | ||
99 | #define CTF_METADATA_NAME "metadata" | |
100 | #define CTF_DATASTREAM_NAME "datastream" | |
101 | ||
102 | /* Reserved event id. */ | |
103 | ||
104 | #define CTF_EVENT_ID_REGISTER 0 | |
105 | #define CTF_EVENT_ID_TSV 1 | |
106 | #define CTF_EVENT_ID_MEMORY 2 | |
107 | #define CTF_EVENT_ID_FRAME 3 | |
393fd4c3 YQ |
108 | #define CTF_EVENT_ID_STATUS 4 |
109 | #define CTF_EVENT_ID_TSV_DEF 5 | |
110 | #define CTF_EVENT_ID_TP_DEF 6 | |
d0353e76 | 111 | |
de7b2893 YQ |
112 | #define CTF_PID (2) |
113 | ||
d0353e76 YQ |
114 | /* The state kept while writing the CTF datastream file. */ |
115 | ||
116 | struct trace_write_handler | |
117 | { | |
118 | /* File descriptor of metadata. */ | |
119 | FILE *metadata_fd; | |
120 | /* File descriptor of traceframes. */ | |
121 | FILE *datastream_fd; | |
122 | ||
123 | /* This is the content size of the current packet. */ | |
124 | size_t content_size; | |
125 | ||
126 | /* This is the start offset of current packet. */ | |
127 | long packet_start; | |
128 | }; | |
129 | ||
130 | /* Write metadata in FORMAT. */ | |
131 | ||
77b64a49 PA |
132 | static void |
133 | ctf_save_write_metadata (struct trace_write_handler *handler, | |
134 | const char *format, ...) | |
135 | ATTRIBUTE_PRINTF (2, 3); | |
136 | ||
d0353e76 YQ |
137 | static void |
138 | ctf_save_write_metadata (struct trace_write_handler *handler, | |
139 | const char *format, ...) | |
140 | { | |
141 | va_list args; | |
142 | ||
143 | va_start (args, format); | |
144 | if (vfprintf (handler->metadata_fd, format, args) < 0) | |
145 | error (_("Unable to write metadata file (%s)"), | |
146 | safe_strerror (errno)); | |
147 | va_end (args); | |
148 | } | |
149 | ||
150 | /* Write BUF of length SIZE to datastream file represented by | |
151 | HANDLER. */ | |
152 | ||
153 | static int | |
154 | ctf_save_write (struct trace_write_handler *handler, | |
155 | const gdb_byte *buf, size_t size) | |
156 | { | |
157 | if (fwrite (buf, size, 1, handler->datastream_fd) != 1) | |
158 | error (_("Unable to write file for saving trace data (%s)"), | |
159 | safe_strerror (errno)); | |
160 | ||
161 | handler->content_size += size; | |
162 | ||
163 | return 0; | |
164 | } | |
165 | ||
166 | /* Write a unsigned 32-bit integer to datastream file represented by | |
167 | HANDLER. */ | |
168 | ||
169 | #define ctf_save_write_uint32(HANDLER, U32) \ | |
170 | ctf_save_write (HANDLER, (gdb_byte *) &U32, 4) | |
171 | ||
393fd4c3 YQ |
172 | /* Write a signed 32-bit integer to datastream file represented by |
173 | HANDLER. */ | |
174 | ||
175 | #define ctf_save_write_int32(HANDLER, INT32) \ | |
176 | ctf_save_write ((HANDLER), (gdb_byte *) &(INT32), 4) | |
177 | ||
d0353e76 YQ |
178 | /* Set datastream file position. Update HANDLER->content_size |
179 | if WHENCE is SEEK_CUR. */ | |
180 | ||
181 | static int | |
182 | ctf_save_fseek (struct trace_write_handler *handler, long offset, | |
183 | int whence) | |
184 | { | |
185 | gdb_assert (whence != SEEK_END); | |
186 | gdb_assert (whence != SEEK_SET | |
187 | || offset <= handler->content_size + handler->packet_start); | |
188 | ||
189 | if (fseek (handler->datastream_fd, offset, whence)) | |
190 | error (_("Unable to seek file for saving trace data (%s)"), | |
191 | safe_strerror (errno)); | |
192 | ||
193 | if (whence == SEEK_CUR) | |
194 | handler->content_size += offset; | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
199 | /* Change the datastream file position to align on ALIGN_SIZE, | |
200 | and write BUF to datastream file. The size of BUF is SIZE. */ | |
201 | ||
202 | static int | |
203 | ctf_save_align_write (struct trace_write_handler *handler, | |
204 | const gdb_byte *buf, | |
205 | size_t size, size_t align_size) | |
206 | { | |
207 | long offset | |
208 | = (align_up (handler->content_size, align_size) | |
209 | - handler->content_size); | |
210 | ||
211 | if (ctf_save_fseek (handler, offset, SEEK_CUR)) | |
212 | return -1; | |
213 | ||
214 | if (ctf_save_write (handler, buf, size)) | |
215 | return -1; | |
216 | ||
217 | return 0; | |
218 | } | |
219 | ||
220 | /* Write events to next new packet. */ | |
221 | ||
222 | static void | |
223 | ctf_save_next_packet (struct trace_write_handler *handler) | |
224 | { | |
225 | handler->packet_start += (handler->content_size + 4); | |
226 | ctf_save_fseek (handler, handler->packet_start, SEEK_SET); | |
227 | handler->content_size = 0; | |
228 | } | |
229 | ||
230 | /* Write the CTF metadata header. */ | |
231 | ||
232 | static void | |
233 | ctf_save_metadata_header (struct trace_write_handler *handler) | |
234 | { | |
d0353e76 YQ |
235 | ctf_save_write_metadata (handler, "/* CTF %d.%d */\n", |
236 | CTF_SAVE_MAJOR, CTF_SAVE_MINOR); | |
237 | ctf_save_write_metadata (handler, | |
238 | "typealias integer { size = 8; align = 8; " | |
239 | "signed = false; encoding = ascii;}" | |
240 | " := ascii;\n"); | |
241 | ctf_save_write_metadata (handler, | |
242 | "typealias integer { size = 8; align = 8; " | |
243 | "signed = false; }" | |
244 | " := uint8_t;\n"); | |
245 | ctf_save_write_metadata (handler, | |
246 | "typealias integer { size = 16; align = 16;" | |
247 | "signed = false; } := uint16_t;\n"); | |
248 | ctf_save_write_metadata (handler, | |
249 | "typealias integer { size = 32; align = 32;" | |
250 | "signed = false; } := uint32_t;\n"); | |
251 | ctf_save_write_metadata (handler, | |
252 | "typealias integer { size = 64; align = 64;" | |
253 | "signed = false; base = hex;}" | |
254 | " := uint64_t;\n"); | |
393fd4c3 YQ |
255 | ctf_save_write_metadata (handler, |
256 | "typealias integer { size = 32; align = 32;" | |
257 | "signed = true; } := int32_t;\n"); | |
258 | ctf_save_write_metadata (handler, | |
259 | "typealias integer { size = 64; align = 64;" | |
260 | "signed = true; } := int64_t;\n"); | |
261 | ctf_save_write_metadata (handler, | |
262 | "typealias string { encoding = ascii;" | |
263 | " } := chars;\n"); | |
d0353e76 YQ |
264 | ctf_save_write_metadata (handler, "\n"); |
265 | ||
8249a5a9 YQ |
266 | /* Get the byte order of the host and write CTF data in this byte |
267 | order. */ | |
268 | #if WORDS_BIGENDIAN | |
269 | #define HOST_ENDIANNESS "be" | |
270 | #else | |
271 | #define HOST_ENDIANNESS "le" | |
272 | #endif | |
273 | ||
7f31862a PA |
274 | ctf_save_write_metadata (handler, |
275 | "\ntrace {\n" | |
276 | " major = %u;\n" | |
277 | " minor = %u;\n" | |
278 | " byte_order = %s;\n" | |
279 | " packet.header := struct {\n" | |
280 | " uint32_t magic;\n" | |
281 | " };\n" | |
282 | "};\n" | |
283 | "\n" | |
284 | "stream {\n" | |
285 | " packet.context := struct {\n" | |
286 | " uint32_t content_size;\n" | |
287 | " uint32_t packet_size;\n" | |
288 | " uint16_t tpnum;\n" | |
289 | " };\n" | |
290 | " event.header := struct {\n" | |
291 | " uint32_t id;\n" | |
292 | " };\n" | |
293 | "};\n", | |
d0353e76 | 294 | CTF_SAVE_MAJOR, CTF_SAVE_MINOR, |
8249a5a9 | 295 | HOST_ENDIANNESS); |
d0353e76 YQ |
296 | ctf_save_write_metadata (handler, "\n"); |
297 | } | |
298 | ||
299 | /* CTF trace writer. */ | |
300 | ||
301 | struct ctf_trace_file_writer | |
302 | { | |
303 | struct trace_file_writer base; | |
304 | ||
305 | /* States related to writing CTF trace file. */ | |
306 | struct trace_write_handler tcs; | |
307 | }; | |
308 | ||
309 | /* This is the implementation of trace_file_write_ops method | |
310 | dtor. */ | |
311 | ||
312 | static void | |
313 | ctf_dtor (struct trace_file_writer *self) | |
314 | { | |
315 | struct ctf_trace_file_writer *writer | |
316 | = (struct ctf_trace_file_writer *) self; | |
317 | ||
318 | if (writer->tcs.metadata_fd != NULL) | |
319 | fclose (writer->tcs.metadata_fd); | |
320 | ||
321 | if (writer->tcs.datastream_fd != NULL) | |
322 | fclose (writer->tcs.datastream_fd); | |
323 | ||
324 | } | |
325 | ||
326 | /* This is the implementation of trace_file_write_ops method | |
327 | target_save. */ | |
328 | ||
329 | static int | |
330 | ctf_target_save (struct trace_file_writer *self, | |
331 | const char *dirname) | |
332 | { | |
333 | /* Don't support save trace file to CTF format in the target. */ | |
334 | return 0; | |
335 | } | |
336 | ||
337 | /* This is the implementation of trace_file_write_ops method | |
338 | start. It creates the directory DIRNAME, metadata and datastream | |
339 | in the directory. */ | |
340 | ||
341 | static void | |
342 | ctf_start (struct trace_file_writer *self, const char *dirname) | |
343 | { | |
d0353e76 YQ |
344 | struct ctf_trace_file_writer *writer |
345 | = (struct ctf_trace_file_writer *) self; | |
840207d8 | 346 | mode_t hmode = S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH; |
d0353e76 YQ |
347 | |
348 | /* Create DIRNAME. */ | |
af307d6a | 349 | if (mkdir (dirname, hmode) && errno != EEXIST) |
d0353e76 YQ |
350 | error (_("Unable to open directory '%s' for saving trace data (%s)"), |
351 | dirname, safe_strerror (errno)); | |
352 | ||
353 | memset (&writer->tcs, '\0', sizeof (writer->tcs)); | |
354 | ||
50feb4bd | 355 | std::string file_name = string_printf ("%s/%s", dirname, CTF_METADATA_NAME); |
d0353e76 | 356 | |
50feb4bd | 357 | writer->tcs.metadata_fd = fopen (file_name.c_str (), "w"); |
d0353e76 YQ |
358 | if (writer->tcs.metadata_fd == NULL) |
359 | error (_("Unable to open file '%s' for saving trace data (%s)"), | |
50feb4bd | 360 | file_name.c_str (), safe_strerror (errno)); |
d0353e76 YQ |
361 | |
362 | ctf_save_metadata_header (&writer->tcs); | |
363 | ||
50feb4bd TT |
364 | file_name = string_printf ("%s/%s", dirname, CTF_DATASTREAM_NAME); |
365 | writer->tcs.datastream_fd = fopen (file_name.c_str (), "w"); | |
d0353e76 YQ |
366 | if (writer->tcs.datastream_fd == NULL) |
367 | error (_("Unable to open file '%s' for saving trace data (%s)"), | |
50feb4bd | 368 | file_name.c_str (), safe_strerror (errno)); |
d0353e76 YQ |
369 | } |
370 | ||
371 | /* This is the implementation of trace_file_write_ops method | |
372 | write_header. Write the types of events on trace variable and | |
373 | frame. */ | |
374 | ||
375 | static void | |
376 | ctf_write_header (struct trace_file_writer *self) | |
377 | { | |
378 | struct ctf_trace_file_writer *writer | |
379 | = (struct ctf_trace_file_writer *) self; | |
380 | ||
381 | ||
382 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
383 | ctf_save_write_metadata (&writer->tcs, | |
384 | "event {\n\tname = \"memory\";\n\tid = %u;\n" | |
385 | "\tfields := struct { \n" | |
386 | "\t\tuint64_t address;\n" | |
387 | "\t\tuint16_t length;\n" | |
388 | "\t\tuint8_t contents[length];\n" | |
389 | "\t};\n" | |
390 | "};\n", CTF_EVENT_ID_MEMORY); | |
391 | ||
392 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
393 | ctf_save_write_metadata (&writer->tcs, | |
394 | "event {\n\tname = \"tsv\";\n\tid = %u;\n" | |
395 | "\tfields := struct { \n" | |
396 | "\t\tuint64_t val;\n" | |
397 | "\t\tuint32_t num;\n" | |
398 | "\t};\n" | |
399 | "};\n", CTF_EVENT_ID_TSV); | |
400 | ||
401 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
402 | ctf_save_write_metadata (&writer->tcs, | |
403 | "event {\n\tname = \"frame\";\n\tid = %u;\n" | |
404 | "\tfields := struct { \n" | |
405 | "\t};\n" | |
406 | "};\n", CTF_EVENT_ID_FRAME); | |
407 | ||
393fd4c3 YQ |
408 | ctf_save_write_metadata (&writer->tcs, "\n"); |
409 | ctf_save_write_metadata (&writer->tcs, | |
410 | "event {\n\tname = \"tsv_def\";\n" | |
411 | "\tid = %u;\n\tfields := struct { \n" | |
412 | "\t\tint64_t initial_value;\n" | |
413 | "\t\tint32_t number;\n" | |
414 | "\t\tint32_t builtin;\n" | |
415 | "\t\tchars name;\n" | |
416 | "\t};\n" | |
417 | "};\n", CTF_EVENT_ID_TSV_DEF); | |
418 | ||
419 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
420 | ctf_save_write_metadata (&writer->tcs, | |
421 | "event {\n\tname = \"tp_def\";\n" | |
422 | "\tid = %u;\n\tfields := struct { \n" | |
423 | "\t\tuint64_t addr;\n" | |
424 | "\t\tuint64_t traceframe_usage;\n" | |
425 | "\t\tint32_t number;\n" | |
426 | "\t\tint32_t enabled;\n" | |
427 | "\t\tint32_t step;\n" | |
428 | "\t\tint32_t pass;\n" | |
429 | "\t\tint32_t hit_count;\n" | |
430 | "\t\tint32_t type;\n" | |
431 | "\t\tchars cond;\n" | |
432 | ||
433 | "\t\tuint32_t action_num;\n" | |
434 | "\t\tchars actions[action_num];\n" | |
435 | ||
436 | "\t\tuint32_t step_action_num;\n" | |
437 | "\t\tchars step_actions[step_action_num];\n" | |
438 | ||
439 | "\t\tchars at_string;\n" | |
440 | "\t\tchars cond_string;\n" | |
441 | ||
442 | "\t\tuint32_t cmd_num;\n" | |
443 | "\t\tchars cmd_strings[cmd_num];\n" | |
444 | "\t};\n" | |
445 | "};\n", CTF_EVENT_ID_TP_DEF); | |
446 | ||
d0353e76 YQ |
447 | gdb_assert (writer->tcs.content_size == 0); |
448 | gdb_assert (writer->tcs.packet_start == 0); | |
393fd4c3 YQ |
449 | |
450 | /* Create a new packet to contain this event. */ | |
451 | self->ops->frame_ops->start (self, 0); | |
d0353e76 YQ |
452 | } |
453 | ||
454 | /* This is the implementation of trace_file_write_ops method | |
455 | write_regblock_type. Write the type of register event in | |
456 | metadata. */ | |
457 | ||
458 | static void | |
459 | ctf_write_regblock_type (struct trace_file_writer *self, int size) | |
460 | { | |
461 | struct ctf_trace_file_writer *writer | |
462 | = (struct ctf_trace_file_writer *) self; | |
463 | ||
464 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
465 | ||
466 | ctf_save_write_metadata (&writer->tcs, | |
467 | "event {\n\tname = \"register\";\n\tid = %u;\n" | |
468 | "\tfields := struct { \n" | |
469 | "\t\tascii contents[%d];\n" | |
470 | "\t};\n" | |
471 | "};\n", | |
472 | CTF_EVENT_ID_REGISTER, size); | |
473 | } | |
474 | ||
475 | /* This is the implementation of trace_file_write_ops method | |
476 | write_status. */ | |
477 | ||
478 | static void | |
479 | ctf_write_status (struct trace_file_writer *self, | |
480 | struct trace_status *ts) | |
481 | { | |
393fd4c3 YQ |
482 | struct ctf_trace_file_writer *writer |
483 | = (struct ctf_trace_file_writer *) self; | |
484 | uint32_t id; | |
393fd4c3 YQ |
485 | |
486 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
487 | ctf_save_write_metadata (&writer->tcs, | |
488 | "event {\n\tname = \"status\";\n\tid = %u;\n" | |
489 | "\tfields := struct { \n" | |
490 | "\t\tint32_t stop_reason;\n" | |
491 | "\t\tint32_t stopping_tracepoint;\n" | |
492 | "\t\tint32_t traceframe_count;\n" | |
493 | "\t\tint32_t traceframes_created;\n" | |
494 | "\t\tint32_t buffer_free;\n" | |
495 | "\t\tint32_t buffer_size;\n" | |
496 | "\t\tint32_t disconnected_tracing;\n" | |
497 | "\t\tint32_t circular_buffer;\n" | |
498 | "\t};\n" | |
499 | "};\n", | |
500 | CTF_EVENT_ID_STATUS); | |
501 | ||
502 | id = CTF_EVENT_ID_STATUS; | |
503 | /* Event Id. */ | |
504 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
505 | ||
506 | ctf_save_write_int32 (&writer->tcs, ts->stop_reason); | |
507 | ctf_save_write_int32 (&writer->tcs, ts->stopping_tracepoint); | |
508 | ctf_save_write_int32 (&writer->tcs, ts->traceframe_count); | |
509 | ctf_save_write_int32 (&writer->tcs, ts->traceframes_created); | |
510 | ctf_save_write_int32 (&writer->tcs, ts->buffer_free); | |
511 | ctf_save_write_int32 (&writer->tcs, ts->buffer_size); | |
512 | ctf_save_write_int32 (&writer->tcs, ts->disconnected_tracing); | |
513 | ctf_save_write_int32 (&writer->tcs, ts->circular_buffer); | |
d0353e76 YQ |
514 | } |
515 | ||
516 | /* This is the implementation of trace_file_write_ops method | |
517 | write_uploaded_tsv. */ | |
518 | ||
519 | static void | |
520 | ctf_write_uploaded_tsv (struct trace_file_writer *self, | |
521 | struct uploaded_tsv *tsv) | |
522 | { | |
393fd4c3 YQ |
523 | struct ctf_trace_file_writer *writer |
524 | = (struct ctf_trace_file_writer *) self; | |
525 | int32_t int32; | |
526 | int64_t int64; | |
393fd4c3 YQ |
527 | const gdb_byte zero = 0; |
528 | ||
529 | /* Event Id. */ | |
530 | int32 = CTF_EVENT_ID_TSV_DEF; | |
531 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int32, 4, 4); | |
532 | ||
533 | /* initial_value */ | |
534 | int64 = tsv->initial_value; | |
535 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int64, 8, 8); | |
536 | ||
537 | /* number */ | |
538 | ctf_save_write_int32 (&writer->tcs, tsv->number); | |
539 | ||
540 | /* builtin */ | |
541 | ctf_save_write_int32 (&writer->tcs, tsv->builtin); | |
542 | ||
543 | /* name */ | |
544 | if (tsv->name != NULL) | |
a398505b PA |
545 | ctf_save_write (&writer->tcs, (gdb_byte *) tsv->name, |
546 | strlen (tsv->name)); | |
393fd4c3 | 547 | ctf_save_write (&writer->tcs, &zero, 1); |
d0353e76 YQ |
548 | } |
549 | ||
550 | /* This is the implementation of trace_file_write_ops method | |
551 | write_uploaded_tp. */ | |
552 | ||
553 | static void | |
554 | ctf_write_uploaded_tp (struct trace_file_writer *self, | |
555 | struct uploaded_tp *tp) | |
556 | { | |
393fd4c3 YQ |
557 | struct ctf_trace_file_writer *writer |
558 | = (struct ctf_trace_file_writer *) self; | |
559 | int32_t int32; | |
560 | int64_t int64; | |
561 | uint32_t u32; | |
562 | const gdb_byte zero = 0; | |
393fd4c3 YQ |
563 | |
564 | /* Event Id. */ | |
565 | int32 = CTF_EVENT_ID_TP_DEF; | |
566 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int32, 4, 4); | |
567 | ||
568 | /* address */ | |
569 | int64 = tp->addr; | |
570 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int64, 8, 8); | |
571 | ||
572 | /* traceframe_usage */ | |
573 | int64 = tp->traceframe_usage; | |
574 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int64, 8, 8); | |
575 | ||
576 | /* number */ | |
577 | ctf_save_write_int32 (&writer->tcs, tp->number); | |
578 | ||
579 | /* enabled */ | |
580 | ctf_save_write_int32 (&writer->tcs, tp->enabled); | |
581 | ||
582 | /* step */ | |
583 | ctf_save_write_int32 (&writer->tcs, tp->step); | |
584 | ||
585 | /* pass */ | |
586 | ctf_save_write_int32 (&writer->tcs, tp->pass); | |
587 | ||
588 | /* hit_count */ | |
589 | ctf_save_write_int32 (&writer->tcs, tp->hit_count); | |
590 | ||
591 | /* type */ | |
592 | ctf_save_write_int32 (&writer->tcs, tp->type); | |
593 | ||
594 | /* condition */ | |
595 | if (tp->cond != NULL) | |
a398505b | 596 | ctf_save_write (&writer->tcs, (gdb_byte *) tp->cond, strlen (tp->cond)); |
393fd4c3 YQ |
597 | ctf_save_write (&writer->tcs, &zero, 1); |
598 | ||
599 | /* actions */ | |
a18ba4e4 | 600 | u32 = tp->actions.size (); |
393fd4c3 | 601 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &u32, 4, 4); |
a18ba4e4 | 602 | for (char *act : tp->actions) |
a398505b | 603 | ctf_save_write (&writer->tcs, (gdb_byte *) act, strlen (act) + 1); |
393fd4c3 YQ |
604 | |
605 | /* step_actions */ | |
a18ba4e4 | 606 | u32 = tp->step_actions.size (); |
393fd4c3 | 607 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &u32, 4, 4); |
a18ba4e4 | 608 | for (char *act : tp->step_actions) |
a398505b | 609 | ctf_save_write (&writer->tcs, (gdb_byte *) act, strlen (act) + 1); |
393fd4c3 YQ |
610 | |
611 | /* at_string */ | |
612 | if (tp->at_string != NULL) | |
a398505b | 613 | ctf_save_write (&writer->tcs, (gdb_byte *) tp->at_string, |
393fd4c3 YQ |
614 | strlen (tp->at_string)); |
615 | ctf_save_write (&writer->tcs, &zero, 1); | |
616 | ||
617 | /* cond_string */ | |
618 | if (tp->cond_string != NULL) | |
a398505b | 619 | ctf_save_write (&writer->tcs, (gdb_byte *) tp->cond_string, |
393fd4c3 YQ |
620 | strlen (tp->cond_string)); |
621 | ctf_save_write (&writer->tcs, &zero, 1); | |
622 | ||
623 | /* cmd_strings */ | |
a18ba4e4 | 624 | u32 = tp->cmd_strings.size (); |
393fd4c3 | 625 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &u32, 4, 4); |
a18ba4e4 | 626 | for (char *act : tp->cmd_strings) |
a398505b | 627 | ctf_save_write (&writer->tcs, (gdb_byte *) act, strlen (act) + 1); |
393fd4c3 | 628 | |
d0353e76 YQ |
629 | } |
630 | ||
18d3cec5 MK |
631 | /* This is the implementation of trace_file_write_ops method |
632 | write_tdesc. */ | |
633 | ||
634 | static void | |
635 | ctf_write_tdesc (struct trace_file_writer *self) | |
636 | { | |
637 | /* Nothing so far. */ | |
638 | } | |
639 | ||
d0353e76 YQ |
640 | /* This is the implementation of trace_file_write_ops method |
641 | write_definition_end. */ | |
642 | ||
643 | static void | |
644 | ctf_write_definition_end (struct trace_file_writer *self) | |
645 | { | |
393fd4c3 | 646 | self->ops->frame_ops->end (self); |
d0353e76 YQ |
647 | } |
648 | ||
d0353e76 YQ |
649 | /* This is the implementation of trace_file_write_ops method |
650 | end. */ | |
651 | ||
652 | static void | |
653 | ctf_end (struct trace_file_writer *self) | |
654 | { | |
655 | struct ctf_trace_file_writer *writer = (struct ctf_trace_file_writer *) self; | |
656 | ||
657 | gdb_assert (writer->tcs.content_size == 0); | |
d0353e76 YQ |
658 | } |
659 | ||
660 | /* This is the implementation of trace_frame_write_ops method | |
661 | start. */ | |
662 | ||
663 | static void | |
664 | ctf_write_frame_start (struct trace_file_writer *self, uint16_t tpnum) | |
665 | { | |
666 | struct ctf_trace_file_writer *writer | |
667 | = (struct ctf_trace_file_writer *) self; | |
668 | uint32_t id = CTF_EVENT_ID_FRAME; | |
669 | uint32_t u32; | |
670 | ||
671 | /* Step 1: Write packet context. */ | |
672 | /* magic. */ | |
673 | u32 = CTF_MAGIC; | |
674 | ctf_save_write_uint32 (&writer->tcs, u32); | |
675 | /* content_size and packet_size.. We still don't know the value, | |
676 | write it later. */ | |
677 | ctf_save_fseek (&writer->tcs, 4, SEEK_CUR); | |
678 | ctf_save_fseek (&writer->tcs, 4, SEEK_CUR); | |
679 | /* Tracepoint number. */ | |
680 | ctf_save_write (&writer->tcs, (gdb_byte *) &tpnum, 2); | |
681 | ||
682 | /* Step 2: Write event "frame". */ | |
683 | /* Event Id. */ | |
684 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
685 | } | |
686 | ||
687 | /* This is the implementation of trace_frame_write_ops method | |
688 | write_r_block. */ | |
689 | ||
690 | static void | |
691 | ctf_write_frame_r_block (struct trace_file_writer *self, | |
692 | gdb_byte *buf, int32_t size) | |
693 | { | |
694 | struct ctf_trace_file_writer *writer | |
695 | = (struct ctf_trace_file_writer *) self; | |
696 | uint32_t id = CTF_EVENT_ID_REGISTER; | |
697 | ||
698 | /* Event Id. */ | |
699 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
700 | ||
701 | /* array contents. */ | |
702 | ctf_save_align_write (&writer->tcs, buf, size, 1); | |
703 | } | |
704 | ||
705 | /* This is the implementation of trace_frame_write_ops method | |
706 | write_m_block_header. */ | |
707 | ||
708 | static void | |
709 | ctf_write_frame_m_block_header (struct trace_file_writer *self, | |
710 | uint64_t addr, uint16_t length) | |
711 | { | |
712 | struct ctf_trace_file_writer *writer | |
713 | = (struct ctf_trace_file_writer *) self; | |
714 | uint32_t event_id = CTF_EVENT_ID_MEMORY; | |
715 | ||
716 | /* Event Id. */ | |
717 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &event_id, 4, 4); | |
718 | ||
719 | /* Address. */ | |
720 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &addr, 8, 8); | |
721 | ||
722 | /* Length. */ | |
723 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &length, 2, 2); | |
724 | } | |
725 | ||
726 | /* This is the implementation of trace_frame_write_ops method | |
727 | write_m_block_memory. */ | |
728 | ||
729 | static void | |
730 | ctf_write_frame_m_block_memory (struct trace_file_writer *self, | |
731 | gdb_byte *buf, uint16_t length) | |
732 | { | |
733 | struct ctf_trace_file_writer *writer | |
734 | = (struct ctf_trace_file_writer *) self; | |
735 | ||
736 | /* Contents. */ | |
737 | ctf_save_align_write (&writer->tcs, (gdb_byte *) buf, length, 1); | |
738 | } | |
739 | ||
740 | /* This is the implementation of trace_frame_write_ops method | |
741 | write_v_block. */ | |
742 | ||
743 | static void | |
744 | ctf_write_frame_v_block (struct trace_file_writer *self, | |
745 | int32_t num, uint64_t val) | |
746 | { | |
747 | struct ctf_trace_file_writer *writer | |
748 | = (struct ctf_trace_file_writer *) self; | |
749 | uint32_t id = CTF_EVENT_ID_TSV; | |
750 | ||
751 | /* Event Id. */ | |
752 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
753 | ||
754 | /* val. */ | |
755 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &val, 8, 8); | |
756 | /* num. */ | |
757 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &num, 4, 4); | |
758 | } | |
759 | ||
760 | /* This is the implementation of trace_frame_write_ops method | |
761 | end. */ | |
762 | ||
763 | static void | |
764 | ctf_write_frame_end (struct trace_file_writer *self) | |
765 | { | |
766 | struct ctf_trace_file_writer *writer | |
767 | = (struct ctf_trace_file_writer *) self; | |
768 | uint32_t u32; | |
769 | uint32_t t; | |
770 | ||
771 | /* Write the content size to packet header. */ | |
772 | ctf_save_fseek (&writer->tcs, writer->tcs.packet_start + 4, | |
773 | SEEK_SET); | |
774 | u32 = writer->tcs.content_size * TARGET_CHAR_BIT; | |
775 | ||
776 | t = writer->tcs.content_size; | |
777 | ctf_save_write_uint32 (&writer->tcs, u32); | |
778 | ||
779 | /* Write the packet size. */ | |
780 | u32 += 4 * TARGET_CHAR_BIT; | |
781 | ctf_save_write_uint32 (&writer->tcs, u32); | |
782 | ||
783 | writer->tcs.content_size = t; | |
784 | ||
785 | /* Write zero at the end of the packet. */ | |
786 | ctf_save_fseek (&writer->tcs, writer->tcs.packet_start + t, | |
787 | SEEK_SET); | |
788 | u32 = 0; | |
789 | ctf_save_write_uint32 (&writer->tcs, u32); | |
790 | writer->tcs.content_size = t; | |
791 | ||
792 | ctf_save_next_packet (&writer->tcs); | |
793 | } | |
794 | ||
795 | /* Operations to write various types of trace frames into CTF | |
796 | format. */ | |
797 | ||
798 | static const struct trace_frame_write_ops ctf_write_frame_ops = | |
799 | { | |
800 | ctf_write_frame_start, | |
801 | ctf_write_frame_r_block, | |
802 | ctf_write_frame_m_block_header, | |
803 | ctf_write_frame_m_block_memory, | |
804 | ctf_write_frame_v_block, | |
805 | ctf_write_frame_end, | |
806 | }; | |
807 | ||
808 | /* Operations to write trace buffers into CTF format. */ | |
809 | ||
810 | static const struct trace_file_write_ops ctf_write_ops = | |
811 | { | |
812 | ctf_dtor, | |
813 | ctf_target_save, | |
814 | ctf_start, | |
815 | ctf_write_header, | |
816 | ctf_write_regblock_type, | |
817 | ctf_write_status, | |
818 | ctf_write_uploaded_tsv, | |
819 | ctf_write_uploaded_tp, | |
18d3cec5 | 820 | ctf_write_tdesc, |
d0353e76 YQ |
821 | ctf_write_definition_end, |
822 | NULL, | |
823 | &ctf_write_frame_ops, | |
824 | ctf_end, | |
825 | }; | |
826 | ||
827 | /* Return a trace writer for CTF format. */ | |
828 | ||
829 | struct trace_file_writer * | |
830 | ctf_trace_file_writer_new (void) | |
831 | { | |
8d749320 | 832 | struct ctf_trace_file_writer *writer = XNEW (struct ctf_trace_file_writer); |
d0353e76 YQ |
833 | |
834 | writer->base.ops = &ctf_write_ops; | |
835 | ||
836 | return (struct trace_file_writer *) writer; | |
837 | } | |
393fd4c3 YQ |
838 | |
839 | #if HAVE_LIBBABELTRACE | |
840 | /* Use libbabeltrace to read CTF data. The libbabeltrace provides | |
841 | iterator to iterate over each event in CTF data and APIs to get | |
842 | details of event and packet, so it is very convenient to use | |
843 | libbabeltrace to access events in CTF. */ | |
844 | ||
845 | #include <babeltrace/babeltrace.h> | |
846 | #include <babeltrace/ctf/events.h> | |
847 | #include <babeltrace/ctf/iterator.h> | |
848 | ||
849 | /* The struct pointer for current CTF directory. */ | |
614d5099 | 850 | static int handle_id = -1; |
393fd4c3 YQ |
851 | static struct bt_context *ctx = NULL; |
852 | static struct bt_ctf_iter *ctf_iter = NULL; | |
853 | /* The position of the first packet containing trace frame. */ | |
854 | static struct bt_iter_pos *start_pos; | |
855 | ||
856 | /* The name of CTF directory. */ | |
857 | static char *trace_dirname; | |
858 | ||
f6ac5f3d | 859 | static ctf_target ctf_ops; |
393fd4c3 YQ |
860 | |
861 | /* Destroy ctf iterator and context. */ | |
862 | ||
863 | static void | |
864 | ctf_destroy (void) | |
865 | { | |
866 | if (ctf_iter != NULL) | |
867 | { | |
868 | bt_ctf_iter_destroy (ctf_iter); | |
869 | ctf_iter = NULL; | |
870 | } | |
871 | if (ctx != NULL) | |
872 | { | |
873 | bt_context_put (ctx); | |
874 | ctx = NULL; | |
875 | } | |
876 | } | |
877 | ||
878 | /* Open CTF trace data in DIRNAME. */ | |
879 | ||
880 | static void | |
014f9477 | 881 | ctf_open_dir (const char *dirname) |
393fd4c3 | 882 | { |
393fd4c3 | 883 | struct bt_iter_pos begin_pos; |
614d5099 YQ |
884 | unsigned int count, i; |
885 | struct bt_ctf_event_decl * const *list; | |
393fd4c3 YQ |
886 | |
887 | ctx = bt_context_create (); | |
888 | if (ctx == NULL) | |
889 | error (_("Unable to create bt_context")); | |
614d5099 YQ |
890 | handle_id = bt_context_add_trace (ctx, dirname, "ctf", NULL, NULL, NULL); |
891 | if (handle_id < 0) | |
393fd4c3 YQ |
892 | { |
893 | ctf_destroy (); | |
894 | error (_("Unable to use libbabeltrace on directory \"%s\""), | |
895 | dirname); | |
896 | } | |
897 | ||
898 | begin_pos.type = BT_SEEK_BEGIN; | |
899 | ctf_iter = bt_ctf_iter_create (ctx, &begin_pos, NULL); | |
900 | if (ctf_iter == NULL) | |
901 | { | |
902 | ctf_destroy (); | |
903 | error (_("Unable to create bt_iterator")); | |
904 | } | |
905 | ||
614d5099 YQ |
906 | /* Look for the declaration of register block. Get the length of |
907 | array "contents" to set trace_regblock_size. */ | |
393fd4c3 | 908 | |
614d5099 YQ |
909 | bt_ctf_get_event_decl_list (handle_id, ctx, &list, &count); |
910 | for (i = 0; i < count; i++) | |
911 | if (strcmp ("register", bt_ctf_get_decl_event_name (list[i])) == 0) | |
912 | { | |
614d5099 YQ |
913 | const struct bt_ctf_field_decl * const *field_list; |
914 | const struct bt_declaration *decl; | |
393fd4c3 | 915 | |
614d5099 YQ |
916 | bt_ctf_get_decl_fields (list[i], BT_EVENT_FIELDS, &field_list, |
917 | &count); | |
393fd4c3 | 918 | |
614d5099 YQ |
919 | gdb_assert (count == 1); |
920 | gdb_assert (0 == strcmp ("contents", | |
921 | bt_ctf_get_decl_field_name (field_list[0]))); | |
922 | decl = bt_ctf_get_decl_from_field_decl (field_list[0]); | |
923 | trace_regblock_size = bt_ctf_get_array_len (decl); | |
393fd4c3 | 924 | |
393fd4c3 | 925 | break; |
614d5099 | 926 | } |
393fd4c3 YQ |
927 | } |
928 | ||
929 | #define SET_INT32_FIELD(EVENT, SCOPE, VAR, FIELD) \ | |
930 | (VAR)->FIELD = (int) bt_ctf_get_int64 (bt_ctf_get_field ((EVENT), \ | |
931 | (SCOPE), \ | |
932 | #FIELD)) | |
933 | ||
e0d13cbd SM |
934 | #define SET_ENUM_FIELD(EVENT, SCOPE, VAR, TYPE, FIELD) \ |
935 | (VAR)->FIELD = (TYPE) bt_ctf_get_int64 (bt_ctf_get_field ((EVENT), \ | |
936 | (SCOPE), \ | |
937 | #FIELD)) | |
938 | ||
939 | ||
393fd4c3 YQ |
940 | /* EVENT is the "status" event and TS is filled in. */ |
941 | ||
942 | static void | |
943 | ctf_read_status (struct bt_ctf_event *event, struct trace_status *ts) | |
944 | { | |
945 | const struct bt_definition *scope | |
946 | = bt_ctf_get_top_level_scope (event, BT_EVENT_FIELDS); | |
947 | ||
e0d13cbd | 948 | SET_ENUM_FIELD (event, scope, ts, enum trace_stop_reason, stop_reason); |
393fd4c3 YQ |
949 | SET_INT32_FIELD (event, scope, ts, stopping_tracepoint); |
950 | SET_INT32_FIELD (event, scope, ts, traceframe_count); | |
951 | SET_INT32_FIELD (event, scope, ts, traceframes_created); | |
952 | SET_INT32_FIELD (event, scope, ts, buffer_free); | |
953 | SET_INT32_FIELD (event, scope, ts, buffer_size); | |
954 | SET_INT32_FIELD (event, scope, ts, disconnected_tracing); | |
955 | SET_INT32_FIELD (event, scope, ts, circular_buffer); | |
956 | ||
957 | bt_iter_next (bt_ctf_get_iter (ctf_iter)); | |
958 | } | |
959 | ||
960 | /* Read the events "tsv_def" one by one, extract its contents and fill | |
961 | in the list UPLOADED_TSVS. */ | |
962 | ||
963 | static void | |
964 | ctf_read_tsv (struct uploaded_tsv **uploaded_tsvs) | |
965 | { | |
966 | gdb_assert (ctf_iter != NULL); | |
967 | ||
968 | while (1) | |
969 | { | |
970 | struct bt_ctf_event *event; | |
971 | const struct bt_definition *scope; | |
972 | const struct bt_definition *def; | |
973 | uint32_t event_id; | |
974 | struct uploaded_tsv *utsv = NULL; | |
975 | ||
976 | event = bt_ctf_iter_read_event (ctf_iter); | |
977 | scope = bt_ctf_get_top_level_scope (event, | |
978 | BT_STREAM_EVENT_HEADER); | |
979 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, | |
980 | "id")); | |
981 | if (event_id != CTF_EVENT_ID_TSV_DEF) | |
982 | break; | |
983 | ||
984 | scope = bt_ctf_get_top_level_scope (event, | |
985 | BT_EVENT_FIELDS); | |
986 | ||
987 | def = bt_ctf_get_field (event, scope, "number"); | |
988 | utsv = get_uploaded_tsv ((int32_t) bt_ctf_get_int64 (def), | |
989 | uploaded_tsvs); | |
990 | ||
991 | def = bt_ctf_get_field (event, scope, "builtin"); | |
992 | utsv->builtin = (int32_t) bt_ctf_get_int64 (def); | |
993 | def = bt_ctf_get_field (event, scope, "initial_value"); | |
994 | utsv->initial_value = bt_ctf_get_int64 (def); | |
995 | ||
996 | def = bt_ctf_get_field (event, scope, "name"); | |
997 | utsv->name = xstrdup (bt_ctf_get_string (def)); | |
998 | ||
999 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1000 | break; | |
1001 | } | |
1002 | ||
1003 | } | |
1004 | ||
1005 | /* Read the value of element whose index is NUM from CTF and write it | |
1006 | to the corresponding VAR->ARRAY. */ | |
1007 | ||
1008 | #define SET_ARRAY_FIELD(EVENT, SCOPE, VAR, NUM, ARRAY) \ | |
1009 | do \ | |
1010 | { \ | |
1011 | uint32_t u32, i; \ | |
1012 | const struct bt_definition *def; \ | |
1013 | \ | |
1014 | u32 = (uint32_t) bt_ctf_get_uint64 (bt_ctf_get_field ((EVENT), \ | |
1015 | (SCOPE), \ | |
1016 | #NUM)); \ | |
1017 | def = bt_ctf_get_field ((EVENT), (SCOPE), #ARRAY); \ | |
1018 | for (i = 0; i < u32; i++) \ | |
1019 | { \ | |
1020 | const struct bt_definition *element \ | |
1021 | = bt_ctf_get_index ((EVENT), def, i); \ | |
1022 | \ | |
a18ba4e4 SM |
1023 | (VAR)->ARRAY.push_back \ |
1024 | (xstrdup (bt_ctf_get_string (element))); \ | |
393fd4c3 YQ |
1025 | } \ |
1026 | } \ | |
1027 | while (0) | |
1028 | ||
1029 | /* Read a string from CTF and set VAR->FIELD. If the length of string | |
1030 | is zero, set VAR->FIELD to NULL. */ | |
1031 | ||
1032 | #define SET_STRING_FIELD(EVENT, SCOPE, VAR, FIELD) \ | |
1033 | do \ | |
1034 | { \ | |
1035 | const char *p = bt_ctf_get_string (bt_ctf_get_field ((EVENT), \ | |
1036 | (SCOPE), \ | |
1037 | #FIELD)); \ | |
1038 | \ | |
1039 | if (strlen (p) > 0) \ | |
1040 | (VAR)->FIELD = xstrdup (p); \ | |
1041 | else \ | |
1042 | (VAR)->FIELD = NULL; \ | |
1043 | } \ | |
1044 | while (0) | |
1045 | ||
1046 | /* Read the events "tp_def" one by one, extract its contents and fill | |
1047 | in the list UPLOADED_TPS. */ | |
1048 | ||
1049 | static void | |
1050 | ctf_read_tp (struct uploaded_tp **uploaded_tps) | |
1051 | { | |
1052 | gdb_assert (ctf_iter != NULL); | |
1053 | ||
1054 | while (1) | |
1055 | { | |
1056 | struct bt_ctf_event *event; | |
1057 | const struct bt_definition *scope; | |
1058 | uint32_t u32; | |
1059 | int32_t int32; | |
1060 | uint64_t u64; | |
1061 | struct uploaded_tp *utp = NULL; | |
1062 | ||
1063 | event = bt_ctf_iter_read_event (ctf_iter); | |
1064 | scope = bt_ctf_get_top_level_scope (event, | |
1065 | BT_STREAM_EVENT_HEADER); | |
1066 | u32 = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, | |
1067 | "id")); | |
1068 | if (u32 != CTF_EVENT_ID_TP_DEF) | |
1069 | break; | |
1070 | ||
1071 | scope = bt_ctf_get_top_level_scope (event, | |
1072 | BT_EVENT_FIELDS); | |
1073 | int32 = (int32_t) bt_ctf_get_int64 (bt_ctf_get_field (event, | |
1074 | scope, | |
1075 | "number")); | |
1076 | u64 = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, | |
1077 | "addr")); | |
1078 | utp = get_uploaded_tp (int32, u64, uploaded_tps); | |
1079 | ||
1080 | SET_INT32_FIELD (event, scope, utp, enabled); | |
1081 | SET_INT32_FIELD (event, scope, utp, step); | |
1082 | SET_INT32_FIELD (event, scope, utp, pass); | |
1083 | SET_INT32_FIELD (event, scope, utp, hit_count); | |
e0d13cbd | 1084 | SET_ENUM_FIELD (event, scope, utp, enum bptype, type); |
393fd4c3 YQ |
1085 | |
1086 | /* Read 'cmd_strings'. */ | |
1087 | SET_ARRAY_FIELD (event, scope, utp, cmd_num, cmd_strings); | |
1088 | /* Read 'actions'. */ | |
1089 | SET_ARRAY_FIELD (event, scope, utp, action_num, actions); | |
1090 | /* Read 'step_actions'. */ | |
1091 | SET_ARRAY_FIELD (event, scope, utp, step_action_num, | |
1092 | step_actions); | |
1093 | ||
1094 | SET_STRING_FIELD(event, scope, utp, at_string); | |
1095 | SET_STRING_FIELD(event, scope, utp, cond_string); | |
1096 | ||
1097 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1098 | break; | |
1099 | } | |
1100 | } | |
1101 | ||
1102 | /* This is the implementation of target_ops method to_open. Open CTF | |
1103 | trace data, read trace status, trace state variables and tracepoint | |
1104 | definitions from the first packet. Set the start position at the | |
1105 | second packet which contains events on trace blocks. */ | |
1106 | ||
d9f719f1 PA |
1107 | static void |
1108 | ctf_target_open (const char *dirname, int from_tty) | |
393fd4c3 YQ |
1109 | { |
1110 | struct bt_ctf_event *event; | |
1111 | uint32_t event_id; | |
1112 | const struct bt_definition *scope; | |
1113 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
1114 | struct uploaded_tp *uploaded_tps = NULL; | |
1115 | ||
1116 | if (!dirname) | |
1117 | error (_("No CTF directory specified.")); | |
1118 | ||
1119 | ctf_open_dir (dirname); | |
1120 | ||
1121 | target_preopen (from_tty); | |
1122 | ||
1123 | /* Skip the first packet which about the trace status. The first | |
1124 | event is "frame". */ | |
1125 | event = bt_ctf_iter_read_event (ctf_iter); | |
1126 | scope = bt_ctf_get_top_level_scope (event, BT_STREAM_EVENT_HEADER); | |
1127 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "id")); | |
1128 | if (event_id != CTF_EVENT_ID_FRAME) | |
1129 | error (_("Wrong event id of the first event")); | |
1130 | /* The second event is "status". */ | |
1131 | bt_iter_next (bt_ctf_get_iter (ctf_iter)); | |
1132 | event = bt_ctf_iter_read_event (ctf_iter); | |
1133 | scope = bt_ctf_get_top_level_scope (event, BT_STREAM_EVENT_HEADER); | |
1134 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "id")); | |
1135 | if (event_id != CTF_EVENT_ID_STATUS) | |
1136 | error (_("Wrong event id of the second event")); | |
1137 | ctf_read_status (event, current_trace_status ()); | |
1138 | ||
1139 | ctf_read_tsv (&uploaded_tsvs); | |
1140 | ||
1141 | ctf_read_tp (&uploaded_tps); | |
1142 | ||
1143 | event = bt_ctf_iter_read_event (ctf_iter); | |
1144 | /* EVENT can be NULL if we've already gone to the end of stream of | |
1145 | events. */ | |
1146 | if (event != NULL) | |
1147 | { | |
1148 | scope = bt_ctf_get_top_level_scope (event, | |
1149 | BT_STREAM_EVENT_HEADER); | |
1150 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, | |
1151 | scope, "id")); | |
1152 | if (event_id != CTF_EVENT_ID_FRAME) | |
1153 | error (_("Wrong event id of the first event of the second packet")); | |
1154 | } | |
1155 | ||
1156 | start_pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1157 | gdb_assert (start_pos->type == BT_SEEK_RESTORE); | |
1158 | ||
1159 | trace_dirname = xstrdup (dirname); | |
1160 | push_target (&ctf_ops); | |
1161 | ||
de7b2893 YQ |
1162 | inferior_appeared (current_inferior (), CTF_PID); |
1163 | inferior_ptid = pid_to_ptid (CTF_PID); | |
1164 | add_thread_silent (inferior_ptid); | |
1165 | ||
393fd4c3 YQ |
1166 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
1167 | merge_uploaded_tracepoints (&uploaded_tps); | |
5723a6fd YQ |
1168 | |
1169 | post_create_inferior (&ctf_ops, from_tty); | |
393fd4c3 YQ |
1170 | } |
1171 | ||
1172 | /* This is the implementation of target_ops method to_close. Destroy | |
1173 | CTF iterator and context. */ | |
1174 | ||
f6ac5f3d PA |
1175 | void |
1176 | ctf_target::close () | |
393fd4c3 | 1177 | { |
de7b2893 YQ |
1178 | int pid; |
1179 | ||
393fd4c3 YQ |
1180 | ctf_destroy (); |
1181 | xfree (trace_dirname); | |
1182 | trace_dirname = NULL; | |
aef525cb | 1183 | |
de7b2893 YQ |
1184 | pid = ptid_get_pid (inferior_ptid); |
1185 | inferior_ptid = null_ptid; /* Avoid confusion from thread stuff. */ | |
1186 | exit_inferior_silent (pid); | |
1187 | ||
aef525cb | 1188 | trace_reset_local_state (); |
393fd4c3 YQ |
1189 | } |
1190 | ||
1191 | /* This is the implementation of target_ops method to_files_info. | |
1192 | Print the directory name of CTF trace data. */ | |
1193 | ||
f6ac5f3d PA |
1194 | void |
1195 | ctf_target::files_info () | |
393fd4c3 YQ |
1196 | { |
1197 | printf_filtered ("\t`%s'\n", trace_dirname); | |
1198 | } | |
1199 | ||
1200 | /* This is the implementation of target_ops method to_fetch_registers. | |
1201 | Iterate over events whose name is "register" in current frame, | |
1202 | extract contents from events, and set REGCACHE with the contents. | |
1203 | If no matched events are found, mark registers unavailable. */ | |
1204 | ||
f6ac5f3d PA |
1205 | void |
1206 | ctf_target::fetch_registers (struct regcache *regcache, int regno) | |
393fd4c3 | 1207 | { |
ac7936df | 1208 | struct gdbarch *gdbarch = regcache->arch (); |
393fd4c3 YQ |
1209 | struct bt_ctf_event *event = NULL; |
1210 | struct bt_iter_pos *pos; | |
1211 | ||
1212 | /* An uninitialized reg size says we're not going to be | |
1213 | successful at getting register blocks. */ | |
1214 | if (trace_regblock_size == 0) | |
1215 | return; | |
1216 | ||
1217 | gdb_assert (ctf_iter != NULL); | |
1218 | /* Save the current position. */ | |
1219 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1220 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1221 | ||
1222 | while (1) | |
1223 | { | |
1224 | const char *name; | |
1225 | struct bt_ctf_event *event1; | |
1226 | ||
1227 | event1 = bt_ctf_iter_read_event (ctf_iter); | |
1228 | ||
1229 | name = bt_ctf_event_name (event1); | |
1230 | ||
1231 | if (name == NULL || strcmp (name, "frame") == 0) | |
1232 | break; | |
1233 | else if (strcmp (name, "register") == 0) | |
1234 | { | |
1235 | event = event1; | |
1236 | break; | |
1237 | } | |
1238 | ||
1239 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1240 | break; | |
1241 | } | |
1242 | ||
1243 | /* Restore the position. */ | |
1244 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1245 | ||
1246 | if (event != NULL) | |
1247 | { | |
48b6e87e | 1248 | int offset, regsize, regn; |
393fd4c3 YQ |
1249 | const struct bt_definition *scope |
1250 | = bt_ctf_get_top_level_scope (event, | |
1251 | BT_EVENT_FIELDS); | |
1252 | const struct bt_definition *array | |
1253 | = bt_ctf_get_field (event, scope, "contents"); | |
48b6e87e | 1254 | gdb_byte *regs = (gdb_byte *) bt_ctf_get_char_array (array); |
393fd4c3 | 1255 | |
393fd4c3 YQ |
1256 | /* Assume the block is laid out in GDB register number order, |
1257 | each register with the size that it has in GDB. */ | |
1258 | offset = 0; | |
1259 | for (regn = 0; regn < gdbarch_num_regs (gdbarch); regn++) | |
1260 | { | |
1261 | regsize = register_size (gdbarch, regn); | |
1262 | /* Make sure we stay within block bounds. */ | |
1263 | if (offset + regsize >= trace_regblock_size) | |
1264 | break; | |
0ec9f114 | 1265 | if (regcache->get_register_status (regn) == REG_UNKNOWN) |
393fd4c3 YQ |
1266 | { |
1267 | if (regno == regn) | |
1268 | { | |
73e1c03f | 1269 | regcache->raw_supply (regno, regs + offset); |
393fd4c3 YQ |
1270 | break; |
1271 | } | |
1272 | else if (regno == -1) | |
1273 | { | |
73e1c03f | 1274 | regcache->raw_supply (regn, regs + offset); |
393fd4c3 YQ |
1275 | } |
1276 | } | |
1277 | offset += regsize; | |
1278 | } | |
393fd4c3 | 1279 | } |
48b6e87e YQ |
1280 | else |
1281 | tracefile_fetch_registers (regcache, regno); | |
393fd4c3 YQ |
1282 | } |
1283 | ||
1284 | /* This is the implementation of target_ops method to_xfer_partial. | |
1285 | Iterate over events whose name is "memory" in | |
1286 | current frame, extract the address and length from events. If | |
1287 | OFFSET is within the range, read the contents from events to | |
1288 | READBUF. */ | |
1289 | ||
f6ac5f3d PA |
1290 | enum target_xfer_status |
1291 | ctf_target::xfer_partial (enum target_object object, | |
1292 | const char *annex, gdb_byte *readbuf, | |
1293 | const gdb_byte *writebuf, ULONGEST offset, | |
1294 | ULONGEST len, ULONGEST *xfered_len) | |
393fd4c3 YQ |
1295 | { |
1296 | /* We're only doing regular memory for now. */ | |
1297 | if (object != TARGET_OBJECT_MEMORY) | |
c9244484 | 1298 | return TARGET_XFER_E_IO; |
393fd4c3 YQ |
1299 | |
1300 | if (readbuf == NULL) | |
1301 | error (_("ctf_xfer_partial: trace file is read-only")); | |
1302 | ||
1303 | if (get_traceframe_number () != -1) | |
1304 | { | |
1305 | struct bt_iter_pos *pos; | |
8acf9577 | 1306 | enum target_xfer_status res; |
290a839c YQ |
1307 | /* Records the lowest available address of all blocks that |
1308 | intersects the requested range. */ | |
1309 | ULONGEST low_addr_available = 0; | |
393fd4c3 YQ |
1310 | |
1311 | gdb_assert (ctf_iter != NULL); | |
1312 | /* Save the current position. */ | |
1313 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1314 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1315 | ||
1316 | /* Iterate through the traceframe's blocks, looking for | |
1317 | memory. */ | |
1318 | while (1) | |
1319 | { | |
1320 | ULONGEST amt; | |
1321 | uint64_t maddr; | |
1322 | uint16_t mlen; | |
393fd4c3 YQ |
1323 | const struct bt_definition *scope; |
1324 | const struct bt_definition *def; | |
1325 | struct bt_ctf_event *event | |
1326 | = bt_ctf_iter_read_event (ctf_iter); | |
1327 | const char *name = bt_ctf_event_name (event); | |
1328 | ||
dac3e710 | 1329 | if (name == NULL || strcmp (name, "frame") == 0) |
393fd4c3 YQ |
1330 | break; |
1331 | else if (strcmp (name, "memory") != 0) | |
1332 | { | |
1333 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1334 | break; | |
1335 | ||
1336 | continue; | |
1337 | } | |
1338 | ||
1339 | scope = bt_ctf_get_top_level_scope (event, | |
1340 | BT_EVENT_FIELDS); | |
1341 | ||
1342 | def = bt_ctf_get_field (event, scope, "address"); | |
1343 | maddr = bt_ctf_get_uint64 (def); | |
1344 | def = bt_ctf_get_field (event, scope, "length"); | |
1345 | mlen = (uint16_t) bt_ctf_get_uint64 (def); | |
1346 | ||
1347 | /* If the block includes the first part of the desired | |
1348 | range, return as much it has; GDB will re-request the | |
1349 | remainder, which might be in a different block of this | |
1350 | trace frame. */ | |
1351 | if (maddr <= offset && offset < (maddr + mlen)) | |
1352 | { | |
1353 | const struct bt_definition *array | |
1354 | = bt_ctf_get_field (event, scope, "contents"); | |
393fd4c3 YQ |
1355 | gdb_byte *contents; |
1356 | int k; | |
1357 | ||
224c3ddb | 1358 | contents = (gdb_byte *) xmalloc (mlen); |
393fd4c3 YQ |
1359 | |
1360 | for (k = 0; k < mlen; k++) | |
1361 | { | |
1362 | const struct bt_definition *element | |
1363 | = bt_ctf_get_index (event, array, k); | |
1364 | ||
1365 | contents[k] = (gdb_byte) bt_ctf_get_uint64 (element); | |
1366 | } | |
1367 | ||
1368 | amt = (maddr + mlen) - offset; | |
1369 | if (amt > len) | |
1370 | amt = len; | |
1371 | ||
1372 | memcpy (readbuf, &contents[offset - maddr], amt); | |
1373 | ||
1374 | xfree (contents); | |
1375 | ||
1376 | /* Restore the position. */ | |
1377 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1378 | ||
9b409511 YQ |
1379 | if (amt == 0) |
1380 | return TARGET_XFER_EOF; | |
1381 | else | |
1382 | { | |
1383 | *xfered_len = amt; | |
1384 | return TARGET_XFER_OK; | |
1385 | } | |
393fd4c3 YQ |
1386 | } |
1387 | ||
290a839c YQ |
1388 | if (offset < maddr && maddr < (offset + len)) |
1389 | if (low_addr_available == 0 || low_addr_available > maddr) | |
1390 | low_addr_available = maddr; | |
1391 | ||
393fd4c3 YQ |
1392 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) |
1393 | break; | |
1394 | } | |
1395 | ||
1396 | /* Restore the position. */ | |
1397 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
393fd4c3 | 1398 | |
8acf9577 YQ |
1399 | /* Requested memory is unavailable in the context of traceframes, |
1400 | and this address falls within a read-only section, fallback | |
290a839c YQ |
1401 | to reading from executable, up to LOW_ADDR_AVAILABLE */ |
1402 | if (offset < low_addr_available) | |
325fac50 | 1403 | len = std::min (len, low_addr_available - offset); |
8acf9577 YQ |
1404 | res = exec_read_partial_read_only (readbuf, offset, len, xfered_len); |
1405 | ||
1406 | if (res == TARGET_XFER_OK) | |
1407 | return TARGET_XFER_OK; | |
1408 | else | |
1409 | { | |
1410 | /* No use trying further, we know some memory starting | |
1411 | at MEMADDR isn't available. */ | |
1412 | *xfered_len = len; | |
1413 | return TARGET_XFER_UNAVAILABLE; | |
1414 | } | |
1ee79381 YQ |
1415 | } |
1416 | else | |
1417 | { | |
1418 | /* Fallback to reading from read-only sections. */ | |
1419 | return section_table_read_available_memory (readbuf, offset, len, xfered_len); | |
1420 | } | |
393fd4c3 YQ |
1421 | } |
1422 | ||
1423 | /* This is the implementation of target_ops method | |
1424 | to_get_trace_state_variable_value. | |
1425 | Iterate over events whose name is "tsv" in current frame. When the | |
1426 | trace variable is found, set the value of it to *VAL and return | |
1427 | true, otherwise return false. */ | |
1428 | ||
57810aa7 | 1429 | bool |
f6ac5f3d | 1430 | ctf_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
393fd4c3 YQ |
1431 | { |
1432 | struct bt_iter_pos *pos; | |
57810aa7 | 1433 | bool found = false; |
393fd4c3 YQ |
1434 | |
1435 | gdb_assert (ctf_iter != NULL); | |
1436 | /* Save the current position. */ | |
1437 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1438 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1439 | ||
1440 | /* Iterate through the traceframe's blocks, looking for 'V' | |
1441 | block. */ | |
1442 | while (1) | |
1443 | { | |
1444 | struct bt_ctf_event *event | |
1445 | = bt_ctf_iter_read_event (ctf_iter); | |
1446 | const char *name = bt_ctf_event_name (event); | |
1447 | ||
1448 | if (name == NULL || strcmp (name, "frame") == 0) | |
1449 | break; | |
1450 | else if (strcmp (name, "tsv") == 0) | |
1451 | { | |
1452 | const struct bt_definition *scope; | |
1453 | const struct bt_definition *def; | |
1454 | ||
1455 | scope = bt_ctf_get_top_level_scope (event, | |
1456 | BT_EVENT_FIELDS); | |
1457 | ||
1458 | def = bt_ctf_get_field (event, scope, "num"); | |
1459 | if (tsvnum == (int32_t) bt_ctf_get_uint64 (def)) | |
1460 | { | |
1461 | def = bt_ctf_get_field (event, scope, "val"); | |
1462 | *val = bt_ctf_get_uint64 (def); | |
1463 | ||
57810aa7 | 1464 | found = true; |
393fd4c3 YQ |
1465 | } |
1466 | } | |
1467 | ||
1468 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1469 | break; | |
1470 | } | |
1471 | ||
1472 | /* Restore the position. */ | |
1473 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1474 | ||
1475 | return found; | |
1476 | } | |
1477 | ||
1478 | /* Return the tracepoint number in "frame" event. */ | |
1479 | ||
1480 | static int | |
1481 | ctf_get_tpnum_from_frame_event (struct bt_ctf_event *event) | |
1482 | { | |
1483 | /* The packet context of events has a field "tpnum". */ | |
1484 | const struct bt_definition *scope | |
1485 | = bt_ctf_get_top_level_scope (event, BT_STREAM_PACKET_CONTEXT); | |
1486 | uint64_t tpnum | |
1487 | = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "tpnum")); | |
1488 | ||
1489 | return (int) tpnum; | |
1490 | } | |
1491 | ||
1492 | /* Return the address at which the current frame was collected. */ | |
1493 | ||
1494 | static CORE_ADDR | |
1495 | ctf_get_traceframe_address (void) | |
1496 | { | |
1497 | struct bt_ctf_event *event = NULL; | |
1498 | struct bt_iter_pos *pos; | |
1499 | CORE_ADDR addr = 0; | |
1500 | ||
1501 | gdb_assert (ctf_iter != NULL); | |
1502 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1503 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1504 | ||
1505 | while (1) | |
1506 | { | |
1507 | const char *name; | |
1508 | struct bt_ctf_event *event1; | |
1509 | ||
1510 | event1 = bt_ctf_iter_read_event (ctf_iter); | |
1511 | ||
1512 | name = bt_ctf_event_name (event1); | |
1513 | ||
1514 | if (name == NULL) | |
1515 | break; | |
1516 | else if (strcmp (name, "frame") == 0) | |
1517 | { | |
1518 | event = event1; | |
1519 | break; | |
1520 | } | |
1521 | ||
1522 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1523 | break; | |
1524 | } | |
1525 | ||
1526 | if (event != NULL) | |
1527 | { | |
1528 | int tpnum = ctf_get_tpnum_from_frame_event (event); | |
1529 | struct tracepoint *tp | |
1530 | = get_tracepoint_by_number_on_target (tpnum); | |
1531 | ||
c1fc2657 SM |
1532 | if (tp && tp->loc) |
1533 | addr = tp->loc->address; | |
393fd4c3 YQ |
1534 | } |
1535 | ||
1536 | /* Restore the position. */ | |
1537 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1538 | ||
1539 | return addr; | |
1540 | } | |
1541 | ||
1542 | /* This is the implementation of target_ops method to_trace_find. | |
1543 | Iterate the events whose name is "frame", extract the tracepoint | |
1544 | number in it. Return traceframe number when matched. */ | |
1545 | ||
f6ac5f3d PA |
1546 | int |
1547 | ctf_target::trace_find (enum trace_find_type type, int num, | |
1548 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) | |
393fd4c3 | 1549 | { |
393fd4c3 YQ |
1550 | int tfnum = 0; |
1551 | int found = 0; | |
393fd4c3 YQ |
1552 | |
1553 | if (num == -1) | |
1554 | { | |
1555 | if (tpp != NULL) | |
1556 | *tpp = -1; | |
1557 | return -1; | |
1558 | } | |
1559 | ||
1560 | gdb_assert (ctf_iter != NULL); | |
1561 | /* Set iterator back to the start. */ | |
1562 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), start_pos); | |
1563 | ||
1564 | while (1) | |
1565 | { | |
393fd4c3 YQ |
1566 | struct bt_ctf_event *event; |
1567 | const char *name; | |
1568 | ||
1569 | event = bt_ctf_iter_read_event (ctf_iter); | |
1570 | ||
1571 | name = bt_ctf_event_name (event); | |
1572 | ||
1573 | if (event == NULL || name == NULL) | |
1574 | break; | |
1575 | ||
1576 | if (strcmp (name, "frame") == 0) | |
1577 | { | |
1578 | CORE_ADDR tfaddr; | |
1579 | ||
1580 | if (type == tfind_number) | |
1581 | { | |
1582 | /* Looking for a specific trace frame. */ | |
1583 | if (tfnum == num) | |
1584 | found = 1; | |
1585 | } | |
1586 | else | |
1587 | { | |
1588 | /* Start from the _next_ trace frame. */ | |
1589 | if (tfnum > get_traceframe_number ()) | |
1590 | { | |
1591 | switch (type) | |
1592 | { | |
1593 | case tfind_tp: | |
1594 | { | |
1595 | struct tracepoint *tp = get_tracepoint (num); | |
1596 | ||
1597 | if (tp != NULL | |
1598 | && (tp->number_on_target | |
1599 | == ctf_get_tpnum_from_frame_event (event))) | |
1600 | found = 1; | |
1601 | break; | |
1602 | } | |
1603 | case tfind_pc: | |
1604 | tfaddr = ctf_get_traceframe_address (); | |
1605 | if (tfaddr == addr1) | |
1606 | found = 1; | |
1607 | break; | |
1608 | case tfind_range: | |
1609 | tfaddr = ctf_get_traceframe_address (); | |
1610 | if (addr1 <= tfaddr && tfaddr <= addr2) | |
1611 | found = 1; | |
1612 | break; | |
1613 | case tfind_outside: | |
1614 | tfaddr = ctf_get_traceframe_address (); | |
1615 | if (!(addr1 <= tfaddr && tfaddr <= addr2)) | |
1616 | found = 1; | |
1617 | break; | |
1618 | default: | |
1619 | internal_error (__FILE__, __LINE__, _("unknown tfind type")); | |
1620 | } | |
1621 | } | |
1622 | } | |
1623 | if (found) | |
1624 | { | |
1625 | if (tpp != NULL) | |
1626 | *tpp = ctf_get_tpnum_from_frame_event (event); | |
1627 | ||
1628 | /* Skip the event "frame". */ | |
1629 | bt_iter_next (bt_ctf_get_iter (ctf_iter)); | |
1630 | ||
1631 | return tfnum; | |
1632 | } | |
1633 | tfnum++; | |
1634 | } | |
1635 | ||
1636 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1637 | break; | |
1638 | } | |
1639 | ||
1640 | return -1; | |
1641 | } | |
1642 | ||
393fd4c3 YQ |
1643 | /* This is the implementation of target_ops method to_traceframe_info. |
1644 | Iterate the events whose name is "memory", in current | |
1645 | frame, extract memory range information, and return them in | |
1646 | traceframe_info. */ | |
1647 | ||
f6ac5f3d PA |
1648 | traceframe_info_up |
1649 | ctf_target::traceframe_info () | |
393fd4c3 | 1650 | { |
f6ac5f3d | 1651 | traceframe_info_up info (new struct traceframe_info); |
393fd4c3 YQ |
1652 | const char *name; |
1653 | struct bt_iter_pos *pos; | |
1654 | ||
1655 | gdb_assert (ctf_iter != NULL); | |
1656 | /* Save the current position. */ | |
1657 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1658 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1659 | ||
1660 | do | |
1661 | { | |
1662 | struct bt_ctf_event *event | |
1663 | = bt_ctf_iter_read_event (ctf_iter); | |
1664 | ||
1665 | name = bt_ctf_event_name (event); | |
1666 | ||
1667 | if (name == NULL || strcmp (name, "register") == 0 | |
1668 | || strcmp (name, "frame") == 0) | |
1669 | ; | |
1670 | else if (strcmp (name, "memory") == 0) | |
1671 | { | |
1672 | const struct bt_definition *scope | |
1673 | = bt_ctf_get_top_level_scope (event, | |
1674 | BT_EVENT_FIELDS); | |
1675 | const struct bt_definition *def; | |
393fd4c3 | 1676 | |
393fd4c3 | 1677 | def = bt_ctf_get_field (event, scope, "address"); |
4cdd21a8 | 1678 | CORE_ADDR start = bt_ctf_get_uint64 (def); |
393fd4c3 YQ |
1679 | |
1680 | def = bt_ctf_get_field (event, scope, "length"); | |
4cdd21a8 SM |
1681 | int length = (uint16_t) bt_ctf_get_uint64 (def); |
1682 | ||
1683 | info->memory.emplace_back (start, length); | |
393fd4c3 | 1684 | } |
28a93511 YQ |
1685 | else if (strcmp (name, "tsv") == 0) |
1686 | { | |
1687 | int vnum; | |
1688 | const struct bt_definition *scope | |
1689 | = bt_ctf_get_top_level_scope (event, | |
1690 | BT_EVENT_FIELDS); | |
1691 | const struct bt_definition *def; | |
1692 | ||
1693 | def = bt_ctf_get_field (event, scope, "num"); | |
eed2386e | 1694 | vnum = (int) bt_ctf_get_uint64 (def); |
d0d292a2 | 1695 | info->tvars.push_back (vnum); |
28a93511 | 1696 | } |
393fd4c3 YQ |
1697 | else |
1698 | { | |
1699 | warning (_("Unhandled trace block type (%s) " | |
1700 | "while building trace frame info."), | |
1701 | name); | |
1702 | } | |
1703 | ||
1704 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1705 | break; | |
1706 | } | |
1707 | while (name != NULL && strcmp (name, "frame") != 0); | |
1708 | ||
1709 | /* Restore the position. */ | |
1710 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1711 | ||
1712 | return info; | |
1713 | } | |
1714 | ||
393fd4c3 YQ |
1715 | #endif |
1716 | ||
393fd4c3 YQ |
1717 | /* module initialization */ |
1718 | ||
1719 | void | |
1720 | _initialize_ctf (void) | |
1721 | { | |
1722 | #if HAVE_LIBBABELTRACE | |
d9f719f1 | 1723 | add_target (ctf_target_info, ctf_target_open, filename_completer); |
393fd4c3 YQ |
1724 | #endif |
1725 | } |