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d0353e76 YQ |
1 | /* CTF format support. |
2 | ||
42a4f53d | 3 | Copyright (C) 2012-2019 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> |
65773341 | 34 | #include "common/filestuff.h" |
d0353e76 | 35 | |
f6ac5f3d PA |
36 | /* The CTF target. */ |
37 | ||
d9f719f1 PA |
38 | static const target_info ctf_target_info = { |
39 | "ctf", | |
40 | N_("CTF file"), | |
41 | N_("(Use a CTF directory as a target.\n\ | |
42 | Specify the filename of the CTF directory.") | |
43 | }; | |
44 | ||
f6ac5f3d PA |
45 | class ctf_target final : public tracefile_target |
46 | { | |
47 | public: | |
d9f719f1 PA |
48 | const target_info &info () const override |
49 | { return ctf_target_info; } | |
f6ac5f3d | 50 | |
f6ac5f3d PA |
51 | void close () override; |
52 | void fetch_registers (struct regcache *, int) override; | |
53 | enum target_xfer_status xfer_partial (enum target_object object, | |
54 | const char *annex, | |
55 | gdb_byte *readbuf, | |
56 | const gdb_byte *writebuf, | |
57 | ULONGEST offset, ULONGEST len, | |
58 | ULONGEST *xfered_len) override; | |
59 | void files_info () override; | |
60 | int trace_find (enum trace_find_type type, int num, | |
61 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
57810aa7 | 62 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
63 | traceframe_info_up traceframe_info () override; |
64 | }; | |
65 | ||
d0353e76 YQ |
66 | /* GDB saves trace buffers and other information (such as trace |
67 | status) got from the remote target into Common Trace Format (CTF). | |
68 | The following types of information are expected to save in CTF: | |
69 | ||
70 | 1. The length (in bytes) of register cache. Event "register" will | |
71 | be defined in metadata, which includes the length. | |
72 | ||
393fd4c3 YQ |
73 | 2. Trace status. Event "status" is defined in metadata, which |
74 | includes all aspects of trace status. | |
d0353e76 | 75 | |
393fd4c3 YQ |
76 | 3. Uploaded trace variables. Event "tsv_def" is defined in |
77 | metadata, which is about all aspects of a uploaded trace variable. | |
78 | Uploaded tracepoints. Event "tp_def" is defined in meta, which | |
79 | is about all aspects of an uploaded tracepoint. Note that the | |
80 | "sequence" (a CTF type, which is a dynamically-sized array.) is | |
81 | used for "actions" "step_actions" and "cmd_strings". | |
d0353e76 YQ |
82 | |
83 | 4. Trace frames. Each trace frame is composed by several blocks | |
84 | of different types ('R', 'M', 'V'). One trace frame is saved in | |
85 | one CTF packet and the blocks of this frame are saved as events. | |
86 | 4.1: The trace frame related information (such as the number of | |
87 | tracepoint associated with this frame) is saved in the packet | |
88 | context. | |
89 | 4.2: The block 'M', 'R' and 'V' are saved in event "memory", | |
90 | "register" and "tsv" respectively. | |
91 | 4.3: When iterating over events, babeltrace can't tell iterator | |
92 | goes to a new packet, so we need a marker or anchor to tell GDB | |
93 | that iterator goes into a new packet or frame. We define event | |
94 | "frame". */ | |
95 | ||
96 | #define CTF_MAGIC 0xC1FC1FC1 | |
97 | #define CTF_SAVE_MAJOR 1 | |
98 | #define CTF_SAVE_MINOR 8 | |
99 | ||
100 | #define CTF_METADATA_NAME "metadata" | |
101 | #define CTF_DATASTREAM_NAME "datastream" | |
102 | ||
103 | /* Reserved event id. */ | |
104 | ||
105 | #define CTF_EVENT_ID_REGISTER 0 | |
106 | #define CTF_EVENT_ID_TSV 1 | |
107 | #define CTF_EVENT_ID_MEMORY 2 | |
108 | #define CTF_EVENT_ID_FRAME 3 | |
393fd4c3 YQ |
109 | #define CTF_EVENT_ID_STATUS 4 |
110 | #define CTF_EVENT_ID_TSV_DEF 5 | |
111 | #define CTF_EVENT_ID_TP_DEF 6 | |
d0353e76 | 112 | |
de7b2893 YQ |
113 | #define CTF_PID (2) |
114 | ||
d0353e76 YQ |
115 | /* The state kept while writing the CTF datastream file. */ |
116 | ||
117 | struct trace_write_handler | |
118 | { | |
119 | /* File descriptor of metadata. */ | |
120 | FILE *metadata_fd; | |
121 | /* File descriptor of traceframes. */ | |
122 | FILE *datastream_fd; | |
123 | ||
124 | /* This is the content size of the current packet. */ | |
125 | size_t content_size; | |
126 | ||
127 | /* This is the start offset of current packet. */ | |
128 | long packet_start; | |
129 | }; | |
130 | ||
131 | /* Write metadata in FORMAT. */ | |
132 | ||
77b64a49 PA |
133 | static void |
134 | ctf_save_write_metadata (struct trace_write_handler *handler, | |
135 | const char *format, ...) | |
136 | ATTRIBUTE_PRINTF (2, 3); | |
137 | ||
d0353e76 YQ |
138 | static void |
139 | ctf_save_write_metadata (struct trace_write_handler *handler, | |
140 | const char *format, ...) | |
141 | { | |
142 | va_list args; | |
143 | ||
144 | va_start (args, format); | |
145 | if (vfprintf (handler->metadata_fd, format, args) < 0) | |
146 | error (_("Unable to write metadata file (%s)"), | |
147 | safe_strerror (errno)); | |
148 | va_end (args); | |
149 | } | |
150 | ||
151 | /* Write BUF of length SIZE to datastream file represented by | |
152 | HANDLER. */ | |
153 | ||
154 | static int | |
155 | ctf_save_write (struct trace_write_handler *handler, | |
156 | const gdb_byte *buf, size_t size) | |
157 | { | |
158 | if (fwrite (buf, size, 1, handler->datastream_fd) != 1) | |
159 | error (_("Unable to write file for saving trace data (%s)"), | |
160 | safe_strerror (errno)); | |
161 | ||
162 | handler->content_size += size; | |
163 | ||
164 | return 0; | |
165 | } | |
166 | ||
167 | /* Write a unsigned 32-bit integer to datastream file represented by | |
168 | HANDLER. */ | |
169 | ||
170 | #define ctf_save_write_uint32(HANDLER, U32) \ | |
171 | ctf_save_write (HANDLER, (gdb_byte *) &U32, 4) | |
172 | ||
393fd4c3 YQ |
173 | /* Write a signed 32-bit integer to datastream file represented by |
174 | HANDLER. */ | |
175 | ||
176 | #define ctf_save_write_int32(HANDLER, INT32) \ | |
177 | ctf_save_write ((HANDLER), (gdb_byte *) &(INT32), 4) | |
178 | ||
d0353e76 YQ |
179 | /* Set datastream file position. Update HANDLER->content_size |
180 | if WHENCE is SEEK_CUR. */ | |
181 | ||
182 | static int | |
183 | ctf_save_fseek (struct trace_write_handler *handler, long offset, | |
184 | int whence) | |
185 | { | |
186 | gdb_assert (whence != SEEK_END); | |
187 | gdb_assert (whence != SEEK_SET | |
188 | || offset <= handler->content_size + handler->packet_start); | |
189 | ||
190 | if (fseek (handler->datastream_fd, offset, whence)) | |
191 | error (_("Unable to seek file for saving trace data (%s)"), | |
192 | safe_strerror (errno)); | |
193 | ||
194 | if (whence == SEEK_CUR) | |
195 | handler->content_size += offset; | |
196 | ||
197 | return 0; | |
198 | } | |
199 | ||
200 | /* Change the datastream file position to align on ALIGN_SIZE, | |
201 | and write BUF to datastream file. The size of BUF is SIZE. */ | |
202 | ||
203 | static int | |
204 | ctf_save_align_write (struct trace_write_handler *handler, | |
205 | const gdb_byte *buf, | |
206 | size_t size, size_t align_size) | |
207 | { | |
208 | long offset | |
209 | = (align_up (handler->content_size, align_size) | |
210 | - handler->content_size); | |
211 | ||
212 | if (ctf_save_fseek (handler, offset, SEEK_CUR)) | |
213 | return -1; | |
214 | ||
215 | if (ctf_save_write (handler, buf, size)) | |
216 | return -1; | |
217 | ||
218 | return 0; | |
219 | } | |
220 | ||
221 | /* Write events to next new packet. */ | |
222 | ||
223 | static void | |
224 | ctf_save_next_packet (struct trace_write_handler *handler) | |
225 | { | |
226 | handler->packet_start += (handler->content_size + 4); | |
227 | ctf_save_fseek (handler, handler->packet_start, SEEK_SET); | |
228 | handler->content_size = 0; | |
229 | } | |
230 | ||
231 | /* Write the CTF metadata header. */ | |
232 | ||
233 | static void | |
234 | ctf_save_metadata_header (struct trace_write_handler *handler) | |
235 | { | |
d0353e76 YQ |
236 | ctf_save_write_metadata (handler, "/* CTF %d.%d */\n", |
237 | CTF_SAVE_MAJOR, CTF_SAVE_MINOR); | |
238 | ctf_save_write_metadata (handler, | |
239 | "typealias integer { size = 8; align = 8; " | |
240 | "signed = false; encoding = ascii;}" | |
241 | " := ascii;\n"); | |
242 | ctf_save_write_metadata (handler, | |
243 | "typealias integer { size = 8; align = 8; " | |
244 | "signed = false; }" | |
245 | " := uint8_t;\n"); | |
246 | ctf_save_write_metadata (handler, | |
247 | "typealias integer { size = 16; align = 16;" | |
248 | "signed = false; } := uint16_t;\n"); | |
249 | ctf_save_write_metadata (handler, | |
250 | "typealias integer { size = 32; align = 32;" | |
251 | "signed = false; } := uint32_t;\n"); | |
252 | ctf_save_write_metadata (handler, | |
253 | "typealias integer { size = 64; align = 64;" | |
254 | "signed = false; base = hex;}" | |
255 | " := uint64_t;\n"); | |
393fd4c3 YQ |
256 | ctf_save_write_metadata (handler, |
257 | "typealias integer { size = 32; align = 32;" | |
258 | "signed = true; } := int32_t;\n"); | |
259 | ctf_save_write_metadata (handler, | |
260 | "typealias integer { size = 64; align = 64;" | |
261 | "signed = true; } := int64_t;\n"); | |
262 | ctf_save_write_metadata (handler, | |
263 | "typealias string { encoding = ascii;" | |
264 | " } := chars;\n"); | |
d0353e76 YQ |
265 | ctf_save_write_metadata (handler, "\n"); |
266 | ||
8249a5a9 YQ |
267 | /* Get the byte order of the host and write CTF data in this byte |
268 | order. */ | |
269 | #if WORDS_BIGENDIAN | |
270 | #define HOST_ENDIANNESS "be" | |
271 | #else | |
272 | #define HOST_ENDIANNESS "le" | |
273 | #endif | |
274 | ||
7f31862a PA |
275 | ctf_save_write_metadata (handler, |
276 | "\ntrace {\n" | |
277 | " major = %u;\n" | |
278 | " minor = %u;\n" | |
279 | " byte_order = %s;\n" | |
280 | " packet.header := struct {\n" | |
281 | " uint32_t magic;\n" | |
282 | " };\n" | |
283 | "};\n" | |
284 | "\n" | |
285 | "stream {\n" | |
286 | " packet.context := struct {\n" | |
287 | " uint32_t content_size;\n" | |
288 | " uint32_t packet_size;\n" | |
289 | " uint16_t tpnum;\n" | |
290 | " };\n" | |
291 | " event.header := struct {\n" | |
292 | " uint32_t id;\n" | |
293 | " };\n" | |
294 | "};\n", | |
d0353e76 | 295 | CTF_SAVE_MAJOR, CTF_SAVE_MINOR, |
8249a5a9 | 296 | HOST_ENDIANNESS); |
d0353e76 YQ |
297 | ctf_save_write_metadata (handler, "\n"); |
298 | } | |
299 | ||
300 | /* CTF trace writer. */ | |
301 | ||
302 | struct ctf_trace_file_writer | |
303 | { | |
304 | struct trace_file_writer base; | |
305 | ||
306 | /* States related to writing CTF trace file. */ | |
307 | struct trace_write_handler tcs; | |
308 | }; | |
309 | ||
310 | /* This is the implementation of trace_file_write_ops method | |
311 | dtor. */ | |
312 | ||
313 | static void | |
314 | ctf_dtor (struct trace_file_writer *self) | |
315 | { | |
316 | struct ctf_trace_file_writer *writer | |
317 | = (struct ctf_trace_file_writer *) self; | |
318 | ||
319 | if (writer->tcs.metadata_fd != NULL) | |
320 | fclose (writer->tcs.metadata_fd); | |
321 | ||
322 | if (writer->tcs.datastream_fd != NULL) | |
323 | fclose (writer->tcs.datastream_fd); | |
324 | ||
325 | } | |
326 | ||
327 | /* This is the implementation of trace_file_write_ops method | |
328 | target_save. */ | |
329 | ||
330 | static int | |
331 | ctf_target_save (struct trace_file_writer *self, | |
332 | const char *dirname) | |
333 | { | |
334 | /* Don't support save trace file to CTF format in the target. */ | |
335 | return 0; | |
336 | } | |
337 | ||
338 | /* This is the implementation of trace_file_write_ops method | |
339 | start. It creates the directory DIRNAME, metadata and datastream | |
340 | in the directory. */ | |
341 | ||
342 | static void | |
343 | ctf_start (struct trace_file_writer *self, const char *dirname) | |
344 | { | |
d0353e76 YQ |
345 | struct ctf_trace_file_writer *writer |
346 | = (struct ctf_trace_file_writer *) self; | |
840207d8 | 347 | mode_t hmode = S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH; |
d0353e76 YQ |
348 | |
349 | /* Create DIRNAME. */ | |
af307d6a | 350 | if (mkdir (dirname, hmode) && errno != EEXIST) |
d0353e76 YQ |
351 | error (_("Unable to open directory '%s' for saving trace data (%s)"), |
352 | dirname, safe_strerror (errno)); | |
353 | ||
354 | memset (&writer->tcs, '\0', sizeof (writer->tcs)); | |
355 | ||
50feb4bd | 356 | std::string file_name = string_printf ("%s/%s", dirname, CTF_METADATA_NAME); |
d0353e76 | 357 | |
65773341 TT |
358 | writer->tcs.metadata_fd |
359 | = gdb_fopen_cloexec (file_name.c_str (), "w").release (); | |
d0353e76 YQ |
360 | if (writer->tcs.metadata_fd == NULL) |
361 | error (_("Unable to open file '%s' for saving trace data (%s)"), | |
50feb4bd | 362 | file_name.c_str (), safe_strerror (errno)); |
d0353e76 YQ |
363 | |
364 | ctf_save_metadata_header (&writer->tcs); | |
365 | ||
50feb4bd | 366 | file_name = string_printf ("%s/%s", dirname, CTF_DATASTREAM_NAME); |
65773341 TT |
367 | writer->tcs.datastream_fd |
368 | = gdb_fopen_cloexec (file_name.c_str (), "w").release (); | |
d0353e76 YQ |
369 | if (writer->tcs.datastream_fd == NULL) |
370 | error (_("Unable to open file '%s' for saving trace data (%s)"), | |
50feb4bd | 371 | file_name.c_str (), safe_strerror (errno)); |
d0353e76 YQ |
372 | } |
373 | ||
374 | /* This is the implementation of trace_file_write_ops method | |
375 | write_header. Write the types of events on trace variable and | |
376 | frame. */ | |
377 | ||
378 | static void | |
379 | ctf_write_header (struct trace_file_writer *self) | |
380 | { | |
381 | struct ctf_trace_file_writer *writer | |
382 | = (struct ctf_trace_file_writer *) self; | |
383 | ||
384 | ||
385 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
386 | ctf_save_write_metadata (&writer->tcs, | |
387 | "event {\n\tname = \"memory\";\n\tid = %u;\n" | |
388 | "\tfields := struct { \n" | |
389 | "\t\tuint64_t address;\n" | |
390 | "\t\tuint16_t length;\n" | |
391 | "\t\tuint8_t contents[length];\n" | |
392 | "\t};\n" | |
393 | "};\n", CTF_EVENT_ID_MEMORY); | |
394 | ||
395 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
396 | ctf_save_write_metadata (&writer->tcs, | |
397 | "event {\n\tname = \"tsv\";\n\tid = %u;\n" | |
398 | "\tfields := struct { \n" | |
399 | "\t\tuint64_t val;\n" | |
400 | "\t\tuint32_t num;\n" | |
401 | "\t};\n" | |
402 | "};\n", CTF_EVENT_ID_TSV); | |
403 | ||
404 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
405 | ctf_save_write_metadata (&writer->tcs, | |
406 | "event {\n\tname = \"frame\";\n\tid = %u;\n" | |
407 | "\tfields := struct { \n" | |
408 | "\t};\n" | |
409 | "};\n", CTF_EVENT_ID_FRAME); | |
410 | ||
393fd4c3 YQ |
411 | ctf_save_write_metadata (&writer->tcs, "\n"); |
412 | ctf_save_write_metadata (&writer->tcs, | |
413 | "event {\n\tname = \"tsv_def\";\n" | |
414 | "\tid = %u;\n\tfields := struct { \n" | |
415 | "\t\tint64_t initial_value;\n" | |
416 | "\t\tint32_t number;\n" | |
417 | "\t\tint32_t builtin;\n" | |
418 | "\t\tchars name;\n" | |
419 | "\t};\n" | |
420 | "};\n", CTF_EVENT_ID_TSV_DEF); | |
421 | ||
422 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
423 | ctf_save_write_metadata (&writer->tcs, | |
424 | "event {\n\tname = \"tp_def\";\n" | |
425 | "\tid = %u;\n\tfields := struct { \n" | |
426 | "\t\tuint64_t addr;\n" | |
427 | "\t\tuint64_t traceframe_usage;\n" | |
428 | "\t\tint32_t number;\n" | |
429 | "\t\tint32_t enabled;\n" | |
430 | "\t\tint32_t step;\n" | |
431 | "\t\tint32_t pass;\n" | |
432 | "\t\tint32_t hit_count;\n" | |
433 | "\t\tint32_t type;\n" | |
434 | "\t\tchars cond;\n" | |
435 | ||
436 | "\t\tuint32_t action_num;\n" | |
437 | "\t\tchars actions[action_num];\n" | |
438 | ||
439 | "\t\tuint32_t step_action_num;\n" | |
440 | "\t\tchars step_actions[step_action_num];\n" | |
441 | ||
442 | "\t\tchars at_string;\n" | |
443 | "\t\tchars cond_string;\n" | |
444 | ||
445 | "\t\tuint32_t cmd_num;\n" | |
446 | "\t\tchars cmd_strings[cmd_num];\n" | |
447 | "\t};\n" | |
448 | "};\n", CTF_EVENT_ID_TP_DEF); | |
449 | ||
d0353e76 YQ |
450 | gdb_assert (writer->tcs.content_size == 0); |
451 | gdb_assert (writer->tcs.packet_start == 0); | |
393fd4c3 YQ |
452 | |
453 | /* Create a new packet to contain this event. */ | |
454 | self->ops->frame_ops->start (self, 0); | |
d0353e76 YQ |
455 | } |
456 | ||
457 | /* This is the implementation of trace_file_write_ops method | |
458 | write_regblock_type. Write the type of register event in | |
459 | metadata. */ | |
460 | ||
461 | static void | |
462 | ctf_write_regblock_type (struct trace_file_writer *self, int size) | |
463 | { | |
464 | struct ctf_trace_file_writer *writer | |
465 | = (struct ctf_trace_file_writer *) self; | |
466 | ||
467 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
468 | ||
469 | ctf_save_write_metadata (&writer->tcs, | |
470 | "event {\n\tname = \"register\";\n\tid = %u;\n" | |
471 | "\tfields := struct { \n" | |
472 | "\t\tascii contents[%d];\n" | |
473 | "\t};\n" | |
474 | "};\n", | |
475 | CTF_EVENT_ID_REGISTER, size); | |
476 | } | |
477 | ||
478 | /* This is the implementation of trace_file_write_ops method | |
479 | write_status. */ | |
480 | ||
481 | static void | |
482 | ctf_write_status (struct trace_file_writer *self, | |
483 | struct trace_status *ts) | |
484 | { | |
393fd4c3 YQ |
485 | struct ctf_trace_file_writer *writer |
486 | = (struct ctf_trace_file_writer *) self; | |
487 | uint32_t id; | |
393fd4c3 YQ |
488 | |
489 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
490 | ctf_save_write_metadata (&writer->tcs, | |
491 | "event {\n\tname = \"status\";\n\tid = %u;\n" | |
492 | "\tfields := struct { \n" | |
493 | "\t\tint32_t stop_reason;\n" | |
494 | "\t\tint32_t stopping_tracepoint;\n" | |
495 | "\t\tint32_t traceframe_count;\n" | |
496 | "\t\tint32_t traceframes_created;\n" | |
497 | "\t\tint32_t buffer_free;\n" | |
498 | "\t\tint32_t buffer_size;\n" | |
499 | "\t\tint32_t disconnected_tracing;\n" | |
500 | "\t\tint32_t circular_buffer;\n" | |
501 | "\t};\n" | |
502 | "};\n", | |
503 | CTF_EVENT_ID_STATUS); | |
504 | ||
505 | id = CTF_EVENT_ID_STATUS; | |
506 | /* Event Id. */ | |
507 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
508 | ||
509 | ctf_save_write_int32 (&writer->tcs, ts->stop_reason); | |
510 | ctf_save_write_int32 (&writer->tcs, ts->stopping_tracepoint); | |
511 | ctf_save_write_int32 (&writer->tcs, ts->traceframe_count); | |
512 | ctf_save_write_int32 (&writer->tcs, ts->traceframes_created); | |
513 | ctf_save_write_int32 (&writer->tcs, ts->buffer_free); | |
514 | ctf_save_write_int32 (&writer->tcs, ts->buffer_size); | |
515 | ctf_save_write_int32 (&writer->tcs, ts->disconnected_tracing); | |
516 | ctf_save_write_int32 (&writer->tcs, ts->circular_buffer); | |
d0353e76 YQ |
517 | } |
518 | ||
519 | /* This is the implementation of trace_file_write_ops method | |
520 | write_uploaded_tsv. */ | |
521 | ||
522 | static void | |
523 | ctf_write_uploaded_tsv (struct trace_file_writer *self, | |
524 | struct uploaded_tsv *tsv) | |
525 | { | |
393fd4c3 YQ |
526 | struct ctf_trace_file_writer *writer |
527 | = (struct ctf_trace_file_writer *) self; | |
528 | int32_t int32; | |
529 | int64_t int64; | |
393fd4c3 YQ |
530 | const gdb_byte zero = 0; |
531 | ||
532 | /* Event Id. */ | |
533 | int32 = CTF_EVENT_ID_TSV_DEF; | |
534 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int32, 4, 4); | |
535 | ||
536 | /* initial_value */ | |
537 | int64 = tsv->initial_value; | |
538 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int64, 8, 8); | |
539 | ||
540 | /* number */ | |
541 | ctf_save_write_int32 (&writer->tcs, tsv->number); | |
542 | ||
543 | /* builtin */ | |
544 | ctf_save_write_int32 (&writer->tcs, tsv->builtin); | |
545 | ||
546 | /* name */ | |
547 | if (tsv->name != NULL) | |
a398505b PA |
548 | ctf_save_write (&writer->tcs, (gdb_byte *) tsv->name, |
549 | strlen (tsv->name)); | |
393fd4c3 | 550 | ctf_save_write (&writer->tcs, &zero, 1); |
d0353e76 YQ |
551 | } |
552 | ||
553 | /* This is the implementation of trace_file_write_ops method | |
554 | write_uploaded_tp. */ | |
555 | ||
556 | static void | |
557 | ctf_write_uploaded_tp (struct trace_file_writer *self, | |
558 | struct uploaded_tp *tp) | |
559 | { | |
393fd4c3 YQ |
560 | struct ctf_trace_file_writer *writer |
561 | = (struct ctf_trace_file_writer *) self; | |
562 | int32_t int32; | |
563 | int64_t int64; | |
564 | uint32_t u32; | |
565 | const gdb_byte zero = 0; | |
393fd4c3 YQ |
566 | |
567 | /* Event Id. */ | |
568 | int32 = CTF_EVENT_ID_TP_DEF; | |
569 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int32, 4, 4); | |
570 | ||
571 | /* address */ | |
572 | int64 = tp->addr; | |
573 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int64, 8, 8); | |
574 | ||
575 | /* traceframe_usage */ | |
576 | int64 = tp->traceframe_usage; | |
577 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int64, 8, 8); | |
578 | ||
579 | /* number */ | |
580 | ctf_save_write_int32 (&writer->tcs, tp->number); | |
581 | ||
582 | /* enabled */ | |
583 | ctf_save_write_int32 (&writer->tcs, tp->enabled); | |
584 | ||
585 | /* step */ | |
586 | ctf_save_write_int32 (&writer->tcs, tp->step); | |
587 | ||
588 | /* pass */ | |
589 | ctf_save_write_int32 (&writer->tcs, tp->pass); | |
590 | ||
591 | /* hit_count */ | |
592 | ctf_save_write_int32 (&writer->tcs, tp->hit_count); | |
593 | ||
594 | /* type */ | |
595 | ctf_save_write_int32 (&writer->tcs, tp->type); | |
596 | ||
597 | /* condition */ | |
598 | if (tp->cond != NULL) | |
67aa1f3c PA |
599 | ctf_save_write (&writer->tcs, (gdb_byte *) tp->cond.get (), |
600 | strlen (tp->cond.get ())); | |
393fd4c3 YQ |
601 | ctf_save_write (&writer->tcs, &zero, 1); |
602 | ||
603 | /* actions */ | |
a18ba4e4 | 604 | u32 = tp->actions.size (); |
393fd4c3 | 605 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &u32, 4, 4); |
67aa1f3c PA |
606 | for (const auto &act : tp->actions) |
607 | ctf_save_write (&writer->tcs, (gdb_byte *) act.get (), | |
608 | strlen (act.get ()) + 1); | |
393fd4c3 YQ |
609 | |
610 | /* step_actions */ | |
a18ba4e4 | 611 | u32 = tp->step_actions.size (); |
393fd4c3 | 612 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &u32, 4, 4); |
67aa1f3c PA |
613 | for (const auto &act : tp->step_actions) |
614 | ctf_save_write (&writer->tcs, (gdb_byte *) act.get (), | |
615 | strlen (act.get ()) + 1); | |
393fd4c3 YQ |
616 | |
617 | /* at_string */ | |
618 | if (tp->at_string != NULL) | |
67aa1f3c PA |
619 | ctf_save_write (&writer->tcs, (gdb_byte *) tp->at_string.get (), |
620 | strlen (tp->at_string.get ())); | |
393fd4c3 YQ |
621 | ctf_save_write (&writer->tcs, &zero, 1); |
622 | ||
623 | /* cond_string */ | |
624 | if (tp->cond_string != NULL) | |
67aa1f3c PA |
625 | ctf_save_write (&writer->tcs, (gdb_byte *) tp->cond_string.get (), |
626 | strlen (tp->cond_string.get ())); | |
393fd4c3 YQ |
627 | ctf_save_write (&writer->tcs, &zero, 1); |
628 | ||
629 | /* cmd_strings */ | |
a18ba4e4 | 630 | u32 = tp->cmd_strings.size (); |
393fd4c3 | 631 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &u32, 4, 4); |
67aa1f3c PA |
632 | for (const auto &act : tp->cmd_strings) |
633 | ctf_save_write (&writer->tcs, (gdb_byte *) act.get (), | |
634 | strlen (act.get ()) + 1); | |
393fd4c3 | 635 | |
d0353e76 YQ |
636 | } |
637 | ||
18d3cec5 MK |
638 | /* This is the implementation of trace_file_write_ops method |
639 | write_tdesc. */ | |
640 | ||
641 | static void | |
642 | ctf_write_tdesc (struct trace_file_writer *self) | |
643 | { | |
644 | /* Nothing so far. */ | |
645 | } | |
646 | ||
d0353e76 YQ |
647 | /* This is the implementation of trace_file_write_ops method |
648 | write_definition_end. */ | |
649 | ||
650 | static void | |
651 | ctf_write_definition_end (struct trace_file_writer *self) | |
652 | { | |
393fd4c3 | 653 | self->ops->frame_ops->end (self); |
d0353e76 YQ |
654 | } |
655 | ||
d0353e76 YQ |
656 | /* This is the implementation of trace_file_write_ops method |
657 | end. */ | |
658 | ||
659 | static void | |
660 | ctf_end (struct trace_file_writer *self) | |
661 | { | |
662 | struct ctf_trace_file_writer *writer = (struct ctf_trace_file_writer *) self; | |
663 | ||
664 | gdb_assert (writer->tcs.content_size == 0); | |
d0353e76 YQ |
665 | } |
666 | ||
667 | /* This is the implementation of trace_frame_write_ops method | |
668 | start. */ | |
669 | ||
670 | static void | |
671 | ctf_write_frame_start (struct trace_file_writer *self, uint16_t tpnum) | |
672 | { | |
673 | struct ctf_trace_file_writer *writer | |
674 | = (struct ctf_trace_file_writer *) self; | |
675 | uint32_t id = CTF_EVENT_ID_FRAME; | |
676 | uint32_t u32; | |
677 | ||
678 | /* Step 1: Write packet context. */ | |
679 | /* magic. */ | |
680 | u32 = CTF_MAGIC; | |
681 | ctf_save_write_uint32 (&writer->tcs, u32); | |
682 | /* content_size and packet_size.. We still don't know the value, | |
683 | write it later. */ | |
684 | ctf_save_fseek (&writer->tcs, 4, SEEK_CUR); | |
685 | ctf_save_fseek (&writer->tcs, 4, SEEK_CUR); | |
686 | /* Tracepoint number. */ | |
687 | ctf_save_write (&writer->tcs, (gdb_byte *) &tpnum, 2); | |
688 | ||
689 | /* Step 2: Write event "frame". */ | |
690 | /* Event Id. */ | |
691 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
692 | } | |
693 | ||
694 | /* This is the implementation of trace_frame_write_ops method | |
695 | write_r_block. */ | |
696 | ||
697 | static void | |
698 | ctf_write_frame_r_block (struct trace_file_writer *self, | |
699 | gdb_byte *buf, int32_t size) | |
700 | { | |
701 | struct ctf_trace_file_writer *writer | |
702 | = (struct ctf_trace_file_writer *) self; | |
703 | uint32_t id = CTF_EVENT_ID_REGISTER; | |
704 | ||
705 | /* Event Id. */ | |
706 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
707 | ||
708 | /* array contents. */ | |
709 | ctf_save_align_write (&writer->tcs, buf, size, 1); | |
710 | } | |
711 | ||
712 | /* This is the implementation of trace_frame_write_ops method | |
713 | write_m_block_header. */ | |
714 | ||
715 | static void | |
716 | ctf_write_frame_m_block_header (struct trace_file_writer *self, | |
717 | uint64_t addr, uint16_t length) | |
718 | { | |
719 | struct ctf_trace_file_writer *writer | |
720 | = (struct ctf_trace_file_writer *) self; | |
721 | uint32_t event_id = CTF_EVENT_ID_MEMORY; | |
722 | ||
723 | /* Event Id. */ | |
724 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &event_id, 4, 4); | |
725 | ||
726 | /* Address. */ | |
727 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &addr, 8, 8); | |
728 | ||
729 | /* Length. */ | |
730 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &length, 2, 2); | |
731 | } | |
732 | ||
733 | /* This is the implementation of trace_frame_write_ops method | |
734 | write_m_block_memory. */ | |
735 | ||
736 | static void | |
737 | ctf_write_frame_m_block_memory (struct trace_file_writer *self, | |
738 | gdb_byte *buf, uint16_t length) | |
739 | { | |
740 | struct ctf_trace_file_writer *writer | |
741 | = (struct ctf_trace_file_writer *) self; | |
742 | ||
743 | /* Contents. */ | |
744 | ctf_save_align_write (&writer->tcs, (gdb_byte *) buf, length, 1); | |
745 | } | |
746 | ||
747 | /* This is the implementation of trace_frame_write_ops method | |
748 | write_v_block. */ | |
749 | ||
750 | static void | |
751 | ctf_write_frame_v_block (struct trace_file_writer *self, | |
752 | int32_t num, uint64_t val) | |
753 | { | |
754 | struct ctf_trace_file_writer *writer | |
755 | = (struct ctf_trace_file_writer *) self; | |
756 | uint32_t id = CTF_EVENT_ID_TSV; | |
757 | ||
758 | /* Event Id. */ | |
759 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
760 | ||
761 | /* val. */ | |
762 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &val, 8, 8); | |
763 | /* num. */ | |
764 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &num, 4, 4); | |
765 | } | |
766 | ||
767 | /* This is the implementation of trace_frame_write_ops method | |
768 | end. */ | |
769 | ||
770 | static void | |
771 | ctf_write_frame_end (struct trace_file_writer *self) | |
772 | { | |
773 | struct ctf_trace_file_writer *writer | |
774 | = (struct ctf_trace_file_writer *) self; | |
775 | uint32_t u32; | |
776 | uint32_t t; | |
777 | ||
778 | /* Write the content size to packet header. */ | |
779 | ctf_save_fseek (&writer->tcs, writer->tcs.packet_start + 4, | |
780 | SEEK_SET); | |
781 | u32 = writer->tcs.content_size * TARGET_CHAR_BIT; | |
782 | ||
783 | t = writer->tcs.content_size; | |
784 | ctf_save_write_uint32 (&writer->tcs, u32); | |
785 | ||
786 | /* Write the packet size. */ | |
787 | u32 += 4 * TARGET_CHAR_BIT; | |
788 | ctf_save_write_uint32 (&writer->tcs, u32); | |
789 | ||
790 | writer->tcs.content_size = t; | |
791 | ||
792 | /* Write zero at the end of the packet. */ | |
793 | ctf_save_fseek (&writer->tcs, writer->tcs.packet_start + t, | |
794 | SEEK_SET); | |
795 | u32 = 0; | |
796 | ctf_save_write_uint32 (&writer->tcs, u32); | |
797 | writer->tcs.content_size = t; | |
798 | ||
799 | ctf_save_next_packet (&writer->tcs); | |
800 | } | |
801 | ||
802 | /* Operations to write various types of trace frames into CTF | |
803 | format. */ | |
804 | ||
805 | static const struct trace_frame_write_ops ctf_write_frame_ops = | |
806 | { | |
807 | ctf_write_frame_start, | |
808 | ctf_write_frame_r_block, | |
809 | ctf_write_frame_m_block_header, | |
810 | ctf_write_frame_m_block_memory, | |
811 | ctf_write_frame_v_block, | |
812 | ctf_write_frame_end, | |
813 | }; | |
814 | ||
815 | /* Operations to write trace buffers into CTF format. */ | |
816 | ||
817 | static const struct trace_file_write_ops ctf_write_ops = | |
818 | { | |
819 | ctf_dtor, | |
820 | ctf_target_save, | |
821 | ctf_start, | |
822 | ctf_write_header, | |
823 | ctf_write_regblock_type, | |
824 | ctf_write_status, | |
825 | ctf_write_uploaded_tsv, | |
826 | ctf_write_uploaded_tp, | |
18d3cec5 | 827 | ctf_write_tdesc, |
d0353e76 YQ |
828 | ctf_write_definition_end, |
829 | NULL, | |
830 | &ctf_write_frame_ops, | |
831 | ctf_end, | |
832 | }; | |
833 | ||
834 | /* Return a trace writer for CTF format. */ | |
835 | ||
836 | struct trace_file_writer * | |
837 | ctf_trace_file_writer_new (void) | |
838 | { | |
8d749320 | 839 | struct ctf_trace_file_writer *writer = XNEW (struct ctf_trace_file_writer); |
d0353e76 YQ |
840 | |
841 | writer->base.ops = &ctf_write_ops; | |
842 | ||
843 | return (struct trace_file_writer *) writer; | |
844 | } | |
393fd4c3 YQ |
845 | |
846 | #if HAVE_LIBBABELTRACE | |
847 | /* Use libbabeltrace to read CTF data. The libbabeltrace provides | |
848 | iterator to iterate over each event in CTF data and APIs to get | |
849 | details of event and packet, so it is very convenient to use | |
850 | libbabeltrace to access events in CTF. */ | |
851 | ||
852 | #include <babeltrace/babeltrace.h> | |
853 | #include <babeltrace/ctf/events.h> | |
854 | #include <babeltrace/ctf/iterator.h> | |
855 | ||
856 | /* The struct pointer for current CTF directory. */ | |
614d5099 | 857 | static int handle_id = -1; |
393fd4c3 YQ |
858 | static struct bt_context *ctx = NULL; |
859 | static struct bt_ctf_iter *ctf_iter = NULL; | |
860 | /* The position of the first packet containing trace frame. */ | |
861 | static struct bt_iter_pos *start_pos; | |
862 | ||
863 | /* The name of CTF directory. */ | |
864 | static char *trace_dirname; | |
865 | ||
f6ac5f3d | 866 | static ctf_target ctf_ops; |
393fd4c3 YQ |
867 | |
868 | /* Destroy ctf iterator and context. */ | |
869 | ||
870 | static void | |
871 | ctf_destroy (void) | |
872 | { | |
873 | if (ctf_iter != NULL) | |
874 | { | |
875 | bt_ctf_iter_destroy (ctf_iter); | |
876 | ctf_iter = NULL; | |
877 | } | |
878 | if (ctx != NULL) | |
879 | { | |
880 | bt_context_put (ctx); | |
881 | ctx = NULL; | |
882 | } | |
883 | } | |
884 | ||
885 | /* Open CTF trace data in DIRNAME. */ | |
886 | ||
887 | static void | |
014f9477 | 888 | ctf_open_dir (const char *dirname) |
393fd4c3 | 889 | { |
393fd4c3 | 890 | struct bt_iter_pos begin_pos; |
614d5099 YQ |
891 | unsigned int count, i; |
892 | struct bt_ctf_event_decl * const *list; | |
393fd4c3 YQ |
893 | |
894 | ctx = bt_context_create (); | |
895 | if (ctx == NULL) | |
896 | error (_("Unable to create bt_context")); | |
614d5099 YQ |
897 | handle_id = bt_context_add_trace (ctx, dirname, "ctf", NULL, NULL, NULL); |
898 | if (handle_id < 0) | |
393fd4c3 YQ |
899 | { |
900 | ctf_destroy (); | |
901 | error (_("Unable to use libbabeltrace on directory \"%s\""), | |
902 | dirname); | |
903 | } | |
904 | ||
905 | begin_pos.type = BT_SEEK_BEGIN; | |
906 | ctf_iter = bt_ctf_iter_create (ctx, &begin_pos, NULL); | |
907 | if (ctf_iter == NULL) | |
908 | { | |
909 | ctf_destroy (); | |
910 | error (_("Unable to create bt_iterator")); | |
911 | } | |
912 | ||
614d5099 YQ |
913 | /* Look for the declaration of register block. Get the length of |
914 | array "contents" to set trace_regblock_size. */ | |
393fd4c3 | 915 | |
614d5099 YQ |
916 | bt_ctf_get_event_decl_list (handle_id, ctx, &list, &count); |
917 | for (i = 0; i < count; i++) | |
918 | if (strcmp ("register", bt_ctf_get_decl_event_name (list[i])) == 0) | |
919 | { | |
614d5099 YQ |
920 | const struct bt_ctf_field_decl * const *field_list; |
921 | const struct bt_declaration *decl; | |
393fd4c3 | 922 | |
614d5099 YQ |
923 | bt_ctf_get_decl_fields (list[i], BT_EVENT_FIELDS, &field_list, |
924 | &count); | |
393fd4c3 | 925 | |
614d5099 YQ |
926 | gdb_assert (count == 1); |
927 | gdb_assert (0 == strcmp ("contents", | |
928 | bt_ctf_get_decl_field_name (field_list[0]))); | |
929 | decl = bt_ctf_get_decl_from_field_decl (field_list[0]); | |
930 | trace_regblock_size = bt_ctf_get_array_len (decl); | |
393fd4c3 | 931 | |
393fd4c3 | 932 | break; |
614d5099 | 933 | } |
393fd4c3 YQ |
934 | } |
935 | ||
936 | #define SET_INT32_FIELD(EVENT, SCOPE, VAR, FIELD) \ | |
937 | (VAR)->FIELD = (int) bt_ctf_get_int64 (bt_ctf_get_field ((EVENT), \ | |
938 | (SCOPE), \ | |
939 | #FIELD)) | |
940 | ||
e0d13cbd SM |
941 | #define SET_ENUM_FIELD(EVENT, SCOPE, VAR, TYPE, FIELD) \ |
942 | (VAR)->FIELD = (TYPE) bt_ctf_get_int64 (bt_ctf_get_field ((EVENT), \ | |
943 | (SCOPE), \ | |
944 | #FIELD)) | |
945 | ||
946 | ||
393fd4c3 YQ |
947 | /* EVENT is the "status" event and TS is filled in. */ |
948 | ||
949 | static void | |
950 | ctf_read_status (struct bt_ctf_event *event, struct trace_status *ts) | |
951 | { | |
952 | const struct bt_definition *scope | |
953 | = bt_ctf_get_top_level_scope (event, BT_EVENT_FIELDS); | |
954 | ||
e0d13cbd | 955 | SET_ENUM_FIELD (event, scope, ts, enum trace_stop_reason, stop_reason); |
393fd4c3 YQ |
956 | SET_INT32_FIELD (event, scope, ts, stopping_tracepoint); |
957 | SET_INT32_FIELD (event, scope, ts, traceframe_count); | |
958 | SET_INT32_FIELD (event, scope, ts, traceframes_created); | |
959 | SET_INT32_FIELD (event, scope, ts, buffer_free); | |
960 | SET_INT32_FIELD (event, scope, ts, buffer_size); | |
961 | SET_INT32_FIELD (event, scope, ts, disconnected_tracing); | |
962 | SET_INT32_FIELD (event, scope, ts, circular_buffer); | |
963 | ||
964 | bt_iter_next (bt_ctf_get_iter (ctf_iter)); | |
965 | } | |
966 | ||
967 | /* Read the events "tsv_def" one by one, extract its contents and fill | |
968 | in the list UPLOADED_TSVS. */ | |
969 | ||
970 | static void | |
971 | ctf_read_tsv (struct uploaded_tsv **uploaded_tsvs) | |
972 | { | |
973 | gdb_assert (ctf_iter != NULL); | |
974 | ||
975 | while (1) | |
976 | { | |
977 | struct bt_ctf_event *event; | |
978 | const struct bt_definition *scope; | |
979 | const struct bt_definition *def; | |
980 | uint32_t event_id; | |
981 | struct uploaded_tsv *utsv = NULL; | |
982 | ||
983 | event = bt_ctf_iter_read_event (ctf_iter); | |
984 | scope = bt_ctf_get_top_level_scope (event, | |
985 | BT_STREAM_EVENT_HEADER); | |
986 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, | |
987 | "id")); | |
988 | if (event_id != CTF_EVENT_ID_TSV_DEF) | |
989 | break; | |
990 | ||
991 | scope = bt_ctf_get_top_level_scope (event, | |
992 | BT_EVENT_FIELDS); | |
993 | ||
994 | def = bt_ctf_get_field (event, scope, "number"); | |
995 | utsv = get_uploaded_tsv ((int32_t) bt_ctf_get_int64 (def), | |
996 | uploaded_tsvs); | |
997 | ||
998 | def = bt_ctf_get_field (event, scope, "builtin"); | |
999 | utsv->builtin = (int32_t) bt_ctf_get_int64 (def); | |
1000 | def = bt_ctf_get_field (event, scope, "initial_value"); | |
1001 | utsv->initial_value = bt_ctf_get_int64 (def); | |
1002 | ||
1003 | def = bt_ctf_get_field (event, scope, "name"); | |
1004 | utsv->name = xstrdup (bt_ctf_get_string (def)); | |
1005 | ||
1006 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1007 | break; | |
1008 | } | |
1009 | ||
1010 | } | |
1011 | ||
1012 | /* Read the value of element whose index is NUM from CTF and write it | |
1013 | to the corresponding VAR->ARRAY. */ | |
1014 | ||
1015 | #define SET_ARRAY_FIELD(EVENT, SCOPE, VAR, NUM, ARRAY) \ | |
1016 | do \ | |
1017 | { \ | |
b926417a | 1018 | uint32_t lu32, i; \ |
393fd4c3 YQ |
1019 | const struct bt_definition *def; \ |
1020 | \ | |
b926417a TT |
1021 | lu32 = (uint32_t) bt_ctf_get_uint64 (bt_ctf_get_field ((EVENT), \ |
1022 | (SCOPE), \ | |
1023 | #NUM)); \ | |
393fd4c3 | 1024 | def = bt_ctf_get_field ((EVENT), (SCOPE), #ARRAY); \ |
b926417a | 1025 | for (i = 0; i < lu32; i++) \ |
393fd4c3 YQ |
1026 | { \ |
1027 | const struct bt_definition *element \ | |
1028 | = bt_ctf_get_index ((EVENT), def, i); \ | |
1029 | \ | |
67aa1f3c | 1030 | (VAR)->ARRAY.emplace_back \ |
a18ba4e4 | 1031 | (xstrdup (bt_ctf_get_string (element))); \ |
393fd4c3 YQ |
1032 | } \ |
1033 | } \ | |
1034 | while (0) | |
1035 | ||
1036 | /* Read a string from CTF and set VAR->FIELD. If the length of string | |
1037 | is zero, set VAR->FIELD to NULL. */ | |
1038 | ||
1039 | #define SET_STRING_FIELD(EVENT, SCOPE, VAR, FIELD) \ | |
1040 | do \ | |
1041 | { \ | |
1042 | const char *p = bt_ctf_get_string (bt_ctf_get_field ((EVENT), \ | |
1043 | (SCOPE), \ | |
1044 | #FIELD)); \ | |
1045 | \ | |
1046 | if (strlen (p) > 0) \ | |
67aa1f3c | 1047 | (VAR)->FIELD.reset (xstrdup (p)); \ |
393fd4c3 YQ |
1048 | else \ |
1049 | (VAR)->FIELD = NULL; \ | |
1050 | } \ | |
1051 | while (0) | |
1052 | ||
1053 | /* Read the events "tp_def" one by one, extract its contents and fill | |
1054 | in the list UPLOADED_TPS. */ | |
1055 | ||
1056 | static void | |
1057 | ctf_read_tp (struct uploaded_tp **uploaded_tps) | |
1058 | { | |
1059 | gdb_assert (ctf_iter != NULL); | |
1060 | ||
1061 | while (1) | |
1062 | { | |
1063 | struct bt_ctf_event *event; | |
1064 | const struct bt_definition *scope; | |
1065 | uint32_t u32; | |
1066 | int32_t int32; | |
1067 | uint64_t u64; | |
1068 | struct uploaded_tp *utp = NULL; | |
1069 | ||
1070 | event = bt_ctf_iter_read_event (ctf_iter); | |
1071 | scope = bt_ctf_get_top_level_scope (event, | |
1072 | BT_STREAM_EVENT_HEADER); | |
1073 | u32 = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, | |
1074 | "id")); | |
1075 | if (u32 != CTF_EVENT_ID_TP_DEF) | |
1076 | break; | |
1077 | ||
1078 | scope = bt_ctf_get_top_level_scope (event, | |
1079 | BT_EVENT_FIELDS); | |
1080 | int32 = (int32_t) bt_ctf_get_int64 (bt_ctf_get_field (event, | |
1081 | scope, | |
1082 | "number")); | |
1083 | u64 = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, | |
1084 | "addr")); | |
1085 | utp = get_uploaded_tp (int32, u64, uploaded_tps); | |
1086 | ||
1087 | SET_INT32_FIELD (event, scope, utp, enabled); | |
1088 | SET_INT32_FIELD (event, scope, utp, step); | |
1089 | SET_INT32_FIELD (event, scope, utp, pass); | |
1090 | SET_INT32_FIELD (event, scope, utp, hit_count); | |
e0d13cbd | 1091 | SET_ENUM_FIELD (event, scope, utp, enum bptype, type); |
393fd4c3 YQ |
1092 | |
1093 | /* Read 'cmd_strings'. */ | |
1094 | SET_ARRAY_FIELD (event, scope, utp, cmd_num, cmd_strings); | |
1095 | /* Read 'actions'. */ | |
1096 | SET_ARRAY_FIELD (event, scope, utp, action_num, actions); | |
1097 | /* Read 'step_actions'. */ | |
1098 | SET_ARRAY_FIELD (event, scope, utp, step_action_num, | |
1099 | step_actions); | |
1100 | ||
1101 | SET_STRING_FIELD(event, scope, utp, at_string); | |
1102 | SET_STRING_FIELD(event, scope, utp, cond_string); | |
1103 | ||
1104 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1105 | break; | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | /* This is the implementation of target_ops method to_open. Open CTF | |
1110 | trace data, read trace status, trace state variables and tracepoint | |
1111 | definitions from the first packet. Set the start position at the | |
1112 | second packet which contains events on trace blocks. */ | |
1113 | ||
d9f719f1 PA |
1114 | static void |
1115 | ctf_target_open (const char *dirname, int from_tty) | |
393fd4c3 YQ |
1116 | { |
1117 | struct bt_ctf_event *event; | |
1118 | uint32_t event_id; | |
1119 | const struct bt_definition *scope; | |
1120 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
1121 | struct uploaded_tp *uploaded_tps = NULL; | |
1122 | ||
1123 | if (!dirname) | |
1124 | error (_("No CTF directory specified.")); | |
1125 | ||
1126 | ctf_open_dir (dirname); | |
1127 | ||
1128 | target_preopen (from_tty); | |
1129 | ||
1130 | /* Skip the first packet which about the trace status. The first | |
1131 | event is "frame". */ | |
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_FRAME) | |
1136 | error (_("Wrong event id of the first event")); | |
1137 | /* The second event is "status". */ | |
1138 | bt_iter_next (bt_ctf_get_iter (ctf_iter)); | |
1139 | event = bt_ctf_iter_read_event (ctf_iter); | |
1140 | scope = bt_ctf_get_top_level_scope (event, BT_STREAM_EVENT_HEADER); | |
1141 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "id")); | |
1142 | if (event_id != CTF_EVENT_ID_STATUS) | |
1143 | error (_("Wrong event id of the second event")); | |
1144 | ctf_read_status (event, current_trace_status ()); | |
1145 | ||
1146 | ctf_read_tsv (&uploaded_tsvs); | |
1147 | ||
1148 | ctf_read_tp (&uploaded_tps); | |
1149 | ||
1150 | event = bt_ctf_iter_read_event (ctf_iter); | |
1151 | /* EVENT can be NULL if we've already gone to the end of stream of | |
1152 | events. */ | |
1153 | if (event != NULL) | |
1154 | { | |
1155 | scope = bt_ctf_get_top_level_scope (event, | |
1156 | BT_STREAM_EVENT_HEADER); | |
1157 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, | |
1158 | scope, "id")); | |
1159 | if (event_id != CTF_EVENT_ID_FRAME) | |
1160 | error (_("Wrong event id of the first event of the second packet")); | |
1161 | } | |
1162 | ||
1163 | start_pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1164 | gdb_assert (start_pos->type == BT_SEEK_RESTORE); | |
1165 | ||
1166 | trace_dirname = xstrdup (dirname); | |
1167 | push_target (&ctf_ops); | |
1168 | ||
de7b2893 | 1169 | inferior_appeared (current_inferior (), CTF_PID); |
f2907e49 | 1170 | inferior_ptid = ptid_t (CTF_PID); |
de7b2893 YQ |
1171 | add_thread_silent (inferior_ptid); |
1172 | ||
393fd4c3 YQ |
1173 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
1174 | merge_uploaded_tracepoints (&uploaded_tps); | |
5723a6fd YQ |
1175 | |
1176 | post_create_inferior (&ctf_ops, from_tty); | |
393fd4c3 YQ |
1177 | } |
1178 | ||
1179 | /* This is the implementation of target_ops method to_close. Destroy | |
1180 | CTF iterator and context. */ | |
1181 | ||
f6ac5f3d PA |
1182 | void |
1183 | ctf_target::close () | |
393fd4c3 YQ |
1184 | { |
1185 | ctf_destroy (); | |
1186 | xfree (trace_dirname); | |
1187 | trace_dirname = NULL; | |
aef525cb | 1188 | |
de7b2893 | 1189 | inferior_ptid = null_ptid; /* Avoid confusion from thread stuff. */ |
00431a78 | 1190 | exit_inferior_silent (current_inferior ()); |
de7b2893 | 1191 | |
aef525cb | 1192 | trace_reset_local_state (); |
393fd4c3 YQ |
1193 | } |
1194 | ||
1195 | /* This is the implementation of target_ops method to_files_info. | |
1196 | Print the directory name of CTF trace data. */ | |
1197 | ||
f6ac5f3d PA |
1198 | void |
1199 | ctf_target::files_info () | |
393fd4c3 YQ |
1200 | { |
1201 | printf_filtered ("\t`%s'\n", trace_dirname); | |
1202 | } | |
1203 | ||
1204 | /* This is the implementation of target_ops method to_fetch_registers. | |
1205 | Iterate over events whose name is "register" in current frame, | |
1206 | extract contents from events, and set REGCACHE with the contents. | |
1207 | If no matched events are found, mark registers unavailable. */ | |
1208 | ||
f6ac5f3d PA |
1209 | void |
1210 | ctf_target::fetch_registers (struct regcache *regcache, int regno) | |
393fd4c3 | 1211 | { |
ac7936df | 1212 | struct gdbarch *gdbarch = regcache->arch (); |
393fd4c3 YQ |
1213 | struct bt_ctf_event *event = NULL; |
1214 | struct bt_iter_pos *pos; | |
1215 | ||
1216 | /* An uninitialized reg size says we're not going to be | |
1217 | successful at getting register blocks. */ | |
1218 | if (trace_regblock_size == 0) | |
1219 | return; | |
1220 | ||
1221 | gdb_assert (ctf_iter != NULL); | |
1222 | /* Save the current position. */ | |
1223 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1224 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1225 | ||
1226 | while (1) | |
1227 | { | |
1228 | const char *name; | |
1229 | struct bt_ctf_event *event1; | |
1230 | ||
1231 | event1 = bt_ctf_iter_read_event (ctf_iter); | |
1232 | ||
1233 | name = bt_ctf_event_name (event1); | |
1234 | ||
1235 | if (name == NULL || strcmp (name, "frame") == 0) | |
1236 | break; | |
1237 | else if (strcmp (name, "register") == 0) | |
1238 | { | |
1239 | event = event1; | |
1240 | break; | |
1241 | } | |
1242 | ||
1243 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1244 | break; | |
1245 | } | |
1246 | ||
1247 | /* Restore the position. */ | |
1248 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1249 | ||
1250 | if (event != NULL) | |
1251 | { | |
48b6e87e | 1252 | int offset, regsize, regn; |
393fd4c3 YQ |
1253 | const struct bt_definition *scope |
1254 | = bt_ctf_get_top_level_scope (event, | |
1255 | BT_EVENT_FIELDS); | |
1256 | const struct bt_definition *array | |
1257 | = bt_ctf_get_field (event, scope, "contents"); | |
48b6e87e | 1258 | gdb_byte *regs = (gdb_byte *) bt_ctf_get_char_array (array); |
393fd4c3 | 1259 | |
393fd4c3 YQ |
1260 | /* Assume the block is laid out in GDB register number order, |
1261 | each register with the size that it has in GDB. */ | |
1262 | offset = 0; | |
1263 | for (regn = 0; regn < gdbarch_num_regs (gdbarch); regn++) | |
1264 | { | |
1265 | regsize = register_size (gdbarch, regn); | |
1266 | /* Make sure we stay within block bounds. */ | |
1267 | if (offset + regsize >= trace_regblock_size) | |
1268 | break; | |
0ec9f114 | 1269 | if (regcache->get_register_status (regn) == REG_UNKNOWN) |
393fd4c3 YQ |
1270 | { |
1271 | if (regno == regn) | |
1272 | { | |
73e1c03f | 1273 | regcache->raw_supply (regno, regs + offset); |
393fd4c3 YQ |
1274 | break; |
1275 | } | |
1276 | else if (regno == -1) | |
1277 | { | |
73e1c03f | 1278 | regcache->raw_supply (regn, regs + offset); |
393fd4c3 YQ |
1279 | } |
1280 | } | |
1281 | offset += regsize; | |
1282 | } | |
393fd4c3 | 1283 | } |
48b6e87e YQ |
1284 | else |
1285 | tracefile_fetch_registers (regcache, regno); | |
393fd4c3 YQ |
1286 | } |
1287 | ||
1288 | /* This is the implementation of target_ops method to_xfer_partial. | |
1289 | Iterate over events whose name is "memory" in | |
1290 | current frame, extract the address and length from events. If | |
1291 | OFFSET is within the range, read the contents from events to | |
1292 | READBUF. */ | |
1293 | ||
f6ac5f3d PA |
1294 | enum target_xfer_status |
1295 | ctf_target::xfer_partial (enum target_object object, | |
1296 | const char *annex, gdb_byte *readbuf, | |
1297 | const gdb_byte *writebuf, ULONGEST offset, | |
1298 | ULONGEST len, ULONGEST *xfered_len) | |
393fd4c3 YQ |
1299 | { |
1300 | /* We're only doing regular memory for now. */ | |
1301 | if (object != TARGET_OBJECT_MEMORY) | |
c9244484 | 1302 | return TARGET_XFER_E_IO; |
393fd4c3 YQ |
1303 | |
1304 | if (readbuf == NULL) | |
1305 | error (_("ctf_xfer_partial: trace file is read-only")); | |
1306 | ||
1307 | if (get_traceframe_number () != -1) | |
1308 | { | |
1309 | struct bt_iter_pos *pos; | |
8acf9577 | 1310 | enum target_xfer_status res; |
290a839c YQ |
1311 | /* Records the lowest available address of all blocks that |
1312 | intersects the requested range. */ | |
1313 | ULONGEST low_addr_available = 0; | |
393fd4c3 YQ |
1314 | |
1315 | gdb_assert (ctf_iter != NULL); | |
1316 | /* Save the current position. */ | |
1317 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1318 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1319 | ||
1320 | /* Iterate through the traceframe's blocks, looking for | |
1321 | memory. */ | |
1322 | while (1) | |
1323 | { | |
1324 | ULONGEST amt; | |
1325 | uint64_t maddr; | |
1326 | uint16_t mlen; | |
393fd4c3 YQ |
1327 | const struct bt_definition *scope; |
1328 | const struct bt_definition *def; | |
1329 | struct bt_ctf_event *event | |
1330 | = bt_ctf_iter_read_event (ctf_iter); | |
1331 | const char *name = bt_ctf_event_name (event); | |
1332 | ||
dac3e710 | 1333 | if (name == NULL || strcmp (name, "frame") == 0) |
393fd4c3 YQ |
1334 | break; |
1335 | else if (strcmp (name, "memory") != 0) | |
1336 | { | |
1337 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1338 | break; | |
1339 | ||
1340 | continue; | |
1341 | } | |
1342 | ||
1343 | scope = bt_ctf_get_top_level_scope (event, | |
1344 | BT_EVENT_FIELDS); | |
1345 | ||
1346 | def = bt_ctf_get_field (event, scope, "address"); | |
1347 | maddr = bt_ctf_get_uint64 (def); | |
1348 | def = bt_ctf_get_field (event, scope, "length"); | |
1349 | mlen = (uint16_t) bt_ctf_get_uint64 (def); | |
1350 | ||
1351 | /* If the block includes the first part of the desired | |
1352 | range, return as much it has; GDB will re-request the | |
1353 | remainder, which might be in a different block of this | |
1354 | trace frame. */ | |
1355 | if (maddr <= offset && offset < (maddr + mlen)) | |
1356 | { | |
1357 | const struct bt_definition *array | |
1358 | = bt_ctf_get_field (event, scope, "contents"); | |
393fd4c3 YQ |
1359 | gdb_byte *contents; |
1360 | int k; | |
1361 | ||
224c3ddb | 1362 | contents = (gdb_byte *) xmalloc (mlen); |
393fd4c3 YQ |
1363 | |
1364 | for (k = 0; k < mlen; k++) | |
1365 | { | |
1366 | const struct bt_definition *element | |
1367 | = bt_ctf_get_index (event, array, k); | |
1368 | ||
1369 | contents[k] = (gdb_byte) bt_ctf_get_uint64 (element); | |
1370 | } | |
1371 | ||
1372 | amt = (maddr + mlen) - offset; | |
1373 | if (amt > len) | |
1374 | amt = len; | |
1375 | ||
1376 | memcpy (readbuf, &contents[offset - maddr], amt); | |
1377 | ||
1378 | xfree (contents); | |
1379 | ||
1380 | /* Restore the position. */ | |
1381 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1382 | ||
9b409511 YQ |
1383 | if (amt == 0) |
1384 | return TARGET_XFER_EOF; | |
1385 | else | |
1386 | { | |
1387 | *xfered_len = amt; | |
1388 | return TARGET_XFER_OK; | |
1389 | } | |
393fd4c3 YQ |
1390 | } |
1391 | ||
290a839c YQ |
1392 | if (offset < maddr && maddr < (offset + len)) |
1393 | if (low_addr_available == 0 || low_addr_available > maddr) | |
1394 | low_addr_available = maddr; | |
1395 | ||
393fd4c3 YQ |
1396 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) |
1397 | break; | |
1398 | } | |
1399 | ||
1400 | /* Restore the position. */ | |
1401 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
393fd4c3 | 1402 | |
8acf9577 YQ |
1403 | /* Requested memory is unavailable in the context of traceframes, |
1404 | and this address falls within a read-only section, fallback | |
290a839c YQ |
1405 | to reading from executable, up to LOW_ADDR_AVAILABLE */ |
1406 | if (offset < low_addr_available) | |
325fac50 | 1407 | len = std::min (len, low_addr_available - offset); |
8acf9577 YQ |
1408 | res = exec_read_partial_read_only (readbuf, offset, len, xfered_len); |
1409 | ||
1410 | if (res == TARGET_XFER_OK) | |
1411 | return TARGET_XFER_OK; | |
1412 | else | |
1413 | { | |
1414 | /* No use trying further, we know some memory starting | |
1415 | at MEMADDR isn't available. */ | |
1416 | *xfered_len = len; | |
1417 | return TARGET_XFER_UNAVAILABLE; | |
1418 | } | |
1ee79381 YQ |
1419 | } |
1420 | else | |
1421 | { | |
1422 | /* Fallback to reading from read-only sections. */ | |
1423 | return section_table_read_available_memory (readbuf, offset, len, xfered_len); | |
1424 | } | |
393fd4c3 YQ |
1425 | } |
1426 | ||
1427 | /* This is the implementation of target_ops method | |
1428 | to_get_trace_state_variable_value. | |
1429 | Iterate over events whose name is "tsv" in current frame. When the | |
1430 | trace variable is found, set the value of it to *VAL and return | |
1431 | true, otherwise return false. */ | |
1432 | ||
57810aa7 | 1433 | bool |
f6ac5f3d | 1434 | ctf_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
393fd4c3 YQ |
1435 | { |
1436 | struct bt_iter_pos *pos; | |
57810aa7 | 1437 | bool found = false; |
393fd4c3 YQ |
1438 | |
1439 | gdb_assert (ctf_iter != NULL); | |
1440 | /* Save the current position. */ | |
1441 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1442 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1443 | ||
1444 | /* Iterate through the traceframe's blocks, looking for 'V' | |
1445 | block. */ | |
1446 | while (1) | |
1447 | { | |
1448 | struct bt_ctf_event *event | |
1449 | = bt_ctf_iter_read_event (ctf_iter); | |
1450 | const char *name = bt_ctf_event_name (event); | |
1451 | ||
1452 | if (name == NULL || strcmp (name, "frame") == 0) | |
1453 | break; | |
1454 | else if (strcmp (name, "tsv") == 0) | |
1455 | { | |
1456 | const struct bt_definition *scope; | |
1457 | const struct bt_definition *def; | |
1458 | ||
1459 | scope = bt_ctf_get_top_level_scope (event, | |
1460 | BT_EVENT_FIELDS); | |
1461 | ||
1462 | def = bt_ctf_get_field (event, scope, "num"); | |
1463 | if (tsvnum == (int32_t) bt_ctf_get_uint64 (def)) | |
1464 | { | |
1465 | def = bt_ctf_get_field (event, scope, "val"); | |
1466 | *val = bt_ctf_get_uint64 (def); | |
1467 | ||
57810aa7 | 1468 | found = true; |
393fd4c3 YQ |
1469 | } |
1470 | } | |
1471 | ||
1472 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1473 | break; | |
1474 | } | |
1475 | ||
1476 | /* Restore the position. */ | |
1477 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1478 | ||
1479 | return found; | |
1480 | } | |
1481 | ||
1482 | /* Return the tracepoint number in "frame" event. */ | |
1483 | ||
1484 | static int | |
1485 | ctf_get_tpnum_from_frame_event (struct bt_ctf_event *event) | |
1486 | { | |
1487 | /* The packet context of events has a field "tpnum". */ | |
1488 | const struct bt_definition *scope | |
1489 | = bt_ctf_get_top_level_scope (event, BT_STREAM_PACKET_CONTEXT); | |
1490 | uint64_t tpnum | |
1491 | = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "tpnum")); | |
1492 | ||
1493 | return (int) tpnum; | |
1494 | } | |
1495 | ||
1496 | /* Return the address at which the current frame was collected. */ | |
1497 | ||
1498 | static CORE_ADDR | |
1499 | ctf_get_traceframe_address (void) | |
1500 | { | |
1501 | struct bt_ctf_event *event = NULL; | |
1502 | struct bt_iter_pos *pos; | |
1503 | CORE_ADDR addr = 0; | |
1504 | ||
1505 | gdb_assert (ctf_iter != NULL); | |
1506 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1507 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1508 | ||
1509 | while (1) | |
1510 | { | |
1511 | const char *name; | |
1512 | struct bt_ctf_event *event1; | |
1513 | ||
1514 | event1 = bt_ctf_iter_read_event (ctf_iter); | |
1515 | ||
1516 | name = bt_ctf_event_name (event1); | |
1517 | ||
1518 | if (name == NULL) | |
1519 | break; | |
1520 | else if (strcmp (name, "frame") == 0) | |
1521 | { | |
1522 | event = event1; | |
1523 | break; | |
1524 | } | |
1525 | ||
1526 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1527 | break; | |
1528 | } | |
1529 | ||
1530 | if (event != NULL) | |
1531 | { | |
1532 | int tpnum = ctf_get_tpnum_from_frame_event (event); | |
1533 | struct tracepoint *tp | |
1534 | = get_tracepoint_by_number_on_target (tpnum); | |
1535 | ||
c1fc2657 SM |
1536 | if (tp && tp->loc) |
1537 | addr = tp->loc->address; | |
393fd4c3 YQ |
1538 | } |
1539 | ||
1540 | /* Restore the position. */ | |
1541 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1542 | ||
1543 | return addr; | |
1544 | } | |
1545 | ||
1546 | /* This is the implementation of target_ops method to_trace_find. | |
1547 | Iterate the events whose name is "frame", extract the tracepoint | |
1548 | number in it. Return traceframe number when matched. */ | |
1549 | ||
f6ac5f3d PA |
1550 | int |
1551 | ctf_target::trace_find (enum trace_find_type type, int num, | |
1552 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) | |
393fd4c3 | 1553 | { |
393fd4c3 YQ |
1554 | int tfnum = 0; |
1555 | int found = 0; | |
393fd4c3 YQ |
1556 | |
1557 | if (num == -1) | |
1558 | { | |
1559 | if (tpp != NULL) | |
1560 | *tpp = -1; | |
1561 | return -1; | |
1562 | } | |
1563 | ||
1564 | gdb_assert (ctf_iter != NULL); | |
1565 | /* Set iterator back to the start. */ | |
1566 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), start_pos); | |
1567 | ||
1568 | while (1) | |
1569 | { | |
393fd4c3 YQ |
1570 | struct bt_ctf_event *event; |
1571 | const char *name; | |
1572 | ||
1573 | event = bt_ctf_iter_read_event (ctf_iter); | |
1574 | ||
1575 | name = bt_ctf_event_name (event); | |
1576 | ||
1577 | if (event == NULL || name == NULL) | |
1578 | break; | |
1579 | ||
1580 | if (strcmp (name, "frame") == 0) | |
1581 | { | |
1582 | CORE_ADDR tfaddr; | |
1583 | ||
1584 | if (type == tfind_number) | |
1585 | { | |
1586 | /* Looking for a specific trace frame. */ | |
1587 | if (tfnum == num) | |
1588 | found = 1; | |
1589 | } | |
1590 | else | |
1591 | { | |
1592 | /* Start from the _next_ trace frame. */ | |
1593 | if (tfnum > get_traceframe_number ()) | |
1594 | { | |
1595 | switch (type) | |
1596 | { | |
1597 | case tfind_tp: | |
1598 | { | |
1599 | struct tracepoint *tp = get_tracepoint (num); | |
1600 | ||
1601 | if (tp != NULL | |
1602 | && (tp->number_on_target | |
1603 | == ctf_get_tpnum_from_frame_event (event))) | |
1604 | found = 1; | |
1605 | break; | |
1606 | } | |
1607 | case tfind_pc: | |
1608 | tfaddr = ctf_get_traceframe_address (); | |
1609 | if (tfaddr == addr1) | |
1610 | found = 1; | |
1611 | break; | |
1612 | case tfind_range: | |
1613 | tfaddr = ctf_get_traceframe_address (); | |
1614 | if (addr1 <= tfaddr && tfaddr <= addr2) | |
1615 | found = 1; | |
1616 | break; | |
1617 | case tfind_outside: | |
1618 | tfaddr = ctf_get_traceframe_address (); | |
1619 | if (!(addr1 <= tfaddr && tfaddr <= addr2)) | |
1620 | found = 1; | |
1621 | break; | |
1622 | default: | |
1623 | internal_error (__FILE__, __LINE__, _("unknown tfind type")); | |
1624 | } | |
1625 | } | |
1626 | } | |
1627 | if (found) | |
1628 | { | |
1629 | if (tpp != NULL) | |
1630 | *tpp = ctf_get_tpnum_from_frame_event (event); | |
1631 | ||
1632 | /* Skip the event "frame". */ | |
1633 | bt_iter_next (bt_ctf_get_iter (ctf_iter)); | |
1634 | ||
1635 | return tfnum; | |
1636 | } | |
1637 | tfnum++; | |
1638 | } | |
1639 | ||
1640 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1641 | break; | |
1642 | } | |
1643 | ||
1644 | return -1; | |
1645 | } | |
1646 | ||
393fd4c3 YQ |
1647 | /* This is the implementation of target_ops method to_traceframe_info. |
1648 | Iterate the events whose name is "memory", in current | |
1649 | frame, extract memory range information, and return them in | |
1650 | traceframe_info. */ | |
1651 | ||
f6ac5f3d PA |
1652 | traceframe_info_up |
1653 | ctf_target::traceframe_info () | |
393fd4c3 | 1654 | { |
f6ac5f3d | 1655 | traceframe_info_up info (new struct traceframe_info); |
393fd4c3 YQ |
1656 | const char *name; |
1657 | struct bt_iter_pos *pos; | |
1658 | ||
1659 | gdb_assert (ctf_iter != NULL); | |
1660 | /* Save the current position. */ | |
1661 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1662 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1663 | ||
1664 | do | |
1665 | { | |
1666 | struct bt_ctf_event *event | |
1667 | = bt_ctf_iter_read_event (ctf_iter); | |
1668 | ||
1669 | name = bt_ctf_event_name (event); | |
1670 | ||
1671 | if (name == NULL || strcmp (name, "register") == 0 | |
1672 | || strcmp (name, "frame") == 0) | |
1673 | ; | |
1674 | else if (strcmp (name, "memory") == 0) | |
1675 | { | |
1676 | const struct bt_definition *scope | |
1677 | = bt_ctf_get_top_level_scope (event, | |
1678 | BT_EVENT_FIELDS); | |
1679 | const struct bt_definition *def; | |
393fd4c3 | 1680 | |
393fd4c3 | 1681 | def = bt_ctf_get_field (event, scope, "address"); |
4cdd21a8 | 1682 | CORE_ADDR start = bt_ctf_get_uint64 (def); |
393fd4c3 YQ |
1683 | |
1684 | def = bt_ctf_get_field (event, scope, "length"); | |
4cdd21a8 SM |
1685 | int length = (uint16_t) bt_ctf_get_uint64 (def); |
1686 | ||
1687 | info->memory.emplace_back (start, length); | |
393fd4c3 | 1688 | } |
28a93511 YQ |
1689 | else if (strcmp (name, "tsv") == 0) |
1690 | { | |
1691 | int vnum; | |
1692 | const struct bt_definition *scope | |
1693 | = bt_ctf_get_top_level_scope (event, | |
1694 | BT_EVENT_FIELDS); | |
1695 | const struct bt_definition *def; | |
1696 | ||
1697 | def = bt_ctf_get_field (event, scope, "num"); | |
eed2386e | 1698 | vnum = (int) bt_ctf_get_uint64 (def); |
d0d292a2 | 1699 | info->tvars.push_back (vnum); |
28a93511 | 1700 | } |
393fd4c3 YQ |
1701 | else |
1702 | { | |
1703 | warning (_("Unhandled trace block type (%s) " | |
1704 | "while building trace frame info."), | |
1705 | name); | |
1706 | } | |
1707 | ||
1708 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1709 | break; | |
1710 | } | |
1711 | while (name != NULL && strcmp (name, "frame") != 0); | |
1712 | ||
1713 | /* Restore the position. */ | |
1714 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1715 | ||
1716 | return info; | |
1717 | } | |
1718 | ||
393fd4c3 YQ |
1719 | #endif |
1720 | ||
393fd4c3 YQ |
1721 | /* module initialization */ |
1722 | ||
1723 | void | |
1724 | _initialize_ctf (void) | |
1725 | { | |
1726 | #if HAVE_LIBBABELTRACE | |
d9f719f1 | 1727 | add_target (ctf_target_info, ctf_target_open, filename_completer); |
393fd4c3 YQ |
1728 | #endif |
1729 | } |