Commit | Line | Data |
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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" | |
d55e5aa6 TT |
23 | |
24 | /* Standard C includes. */ | |
25 | #include <ctype.h> | |
53ce3c39 | 26 | #include <sys/stat.h> |
d55e5aa6 TT |
27 | |
28 | /* Standard C++ includes. */ | |
29 | #include <algorithm> | |
30 | ||
31 | /* Local non-gdb includes. */ | |
32 | #include "common/filestuff.h" | |
da9160e4 | 33 | #include "completer.h" |
d55e5aa6 TT |
34 | #include "ctf.h" |
35 | #include "exec.h" | |
de7b2893 | 36 | #include "gdbthread.h" |
d55e5aa6 TT |
37 | #include "inferior.h" |
38 | #include "regcache.h" | |
7951c4eb | 39 | #include "tracefile.h" |
d55e5aa6 | 40 | #include "tracepoint.h" |
d0353e76 | 41 | |
f6ac5f3d PA |
42 | /* The CTF target. */ |
43 | ||
d9f719f1 PA |
44 | static const target_info ctf_target_info = { |
45 | "ctf", | |
46 | N_("CTF file"), | |
47 | N_("(Use a CTF directory as a target.\n\ | |
48 | Specify the filename of the CTF directory.") | |
49 | }; | |
50 | ||
f6ac5f3d PA |
51 | class ctf_target final : public tracefile_target |
52 | { | |
53 | public: | |
d9f719f1 PA |
54 | const target_info &info () const override |
55 | { return ctf_target_info; } | |
f6ac5f3d | 56 | |
f6ac5f3d PA |
57 | void close () override; |
58 | void fetch_registers (struct regcache *, int) override; | |
59 | enum target_xfer_status xfer_partial (enum target_object object, | |
60 | const char *annex, | |
61 | gdb_byte *readbuf, | |
62 | const gdb_byte *writebuf, | |
63 | ULONGEST offset, ULONGEST len, | |
64 | ULONGEST *xfered_len) override; | |
65 | void files_info () override; | |
66 | int trace_find (enum trace_find_type type, int num, | |
67 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
57810aa7 | 68 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
69 | traceframe_info_up traceframe_info () override; |
70 | }; | |
71 | ||
d0353e76 YQ |
72 | /* GDB saves trace buffers and other information (such as trace |
73 | status) got from the remote target into Common Trace Format (CTF). | |
74 | The following types of information are expected to save in CTF: | |
75 | ||
76 | 1. The length (in bytes) of register cache. Event "register" will | |
77 | be defined in metadata, which includes the length. | |
78 | ||
393fd4c3 YQ |
79 | 2. Trace status. Event "status" is defined in metadata, which |
80 | includes all aspects of trace status. | |
d0353e76 | 81 | |
393fd4c3 YQ |
82 | 3. Uploaded trace variables. Event "tsv_def" is defined in |
83 | metadata, which is about all aspects of a uploaded trace variable. | |
84 | Uploaded tracepoints. Event "tp_def" is defined in meta, which | |
85 | is about all aspects of an uploaded tracepoint. Note that the | |
86 | "sequence" (a CTF type, which is a dynamically-sized array.) is | |
87 | used for "actions" "step_actions" and "cmd_strings". | |
d0353e76 YQ |
88 | |
89 | 4. Trace frames. Each trace frame is composed by several blocks | |
90 | of different types ('R', 'M', 'V'). One trace frame is saved in | |
91 | one CTF packet and the blocks of this frame are saved as events. | |
92 | 4.1: The trace frame related information (such as the number of | |
93 | tracepoint associated with this frame) is saved in the packet | |
94 | context. | |
95 | 4.2: The block 'M', 'R' and 'V' are saved in event "memory", | |
96 | "register" and "tsv" respectively. | |
97 | 4.3: When iterating over events, babeltrace can't tell iterator | |
98 | goes to a new packet, so we need a marker or anchor to tell GDB | |
99 | that iterator goes into a new packet or frame. We define event | |
100 | "frame". */ | |
101 | ||
102 | #define CTF_MAGIC 0xC1FC1FC1 | |
103 | #define CTF_SAVE_MAJOR 1 | |
104 | #define CTF_SAVE_MINOR 8 | |
105 | ||
106 | #define CTF_METADATA_NAME "metadata" | |
107 | #define CTF_DATASTREAM_NAME "datastream" | |
108 | ||
109 | /* Reserved event id. */ | |
110 | ||
111 | #define CTF_EVENT_ID_REGISTER 0 | |
112 | #define CTF_EVENT_ID_TSV 1 | |
113 | #define CTF_EVENT_ID_MEMORY 2 | |
114 | #define CTF_EVENT_ID_FRAME 3 | |
393fd4c3 YQ |
115 | #define CTF_EVENT_ID_STATUS 4 |
116 | #define CTF_EVENT_ID_TSV_DEF 5 | |
117 | #define CTF_EVENT_ID_TP_DEF 6 | |
d0353e76 | 118 | |
de7b2893 YQ |
119 | #define CTF_PID (2) |
120 | ||
d0353e76 YQ |
121 | /* The state kept while writing the CTF datastream file. */ |
122 | ||
123 | struct trace_write_handler | |
124 | { | |
125 | /* File descriptor of metadata. */ | |
126 | FILE *metadata_fd; | |
127 | /* File descriptor of traceframes. */ | |
128 | FILE *datastream_fd; | |
129 | ||
130 | /* This is the content size of the current packet. */ | |
131 | size_t content_size; | |
132 | ||
133 | /* This is the start offset of current packet. */ | |
134 | long packet_start; | |
135 | }; | |
136 | ||
137 | /* Write metadata in FORMAT. */ | |
138 | ||
77b64a49 PA |
139 | static void |
140 | ctf_save_write_metadata (struct trace_write_handler *handler, | |
141 | const char *format, ...) | |
142 | ATTRIBUTE_PRINTF (2, 3); | |
143 | ||
d0353e76 YQ |
144 | static void |
145 | ctf_save_write_metadata (struct trace_write_handler *handler, | |
146 | const char *format, ...) | |
147 | { | |
148 | va_list args; | |
149 | ||
150 | va_start (args, format); | |
151 | if (vfprintf (handler->metadata_fd, format, args) < 0) | |
152 | error (_("Unable to write metadata file (%s)"), | |
153 | safe_strerror (errno)); | |
154 | va_end (args); | |
155 | } | |
156 | ||
157 | /* Write BUF of length SIZE to datastream file represented by | |
158 | HANDLER. */ | |
159 | ||
160 | static int | |
161 | ctf_save_write (struct trace_write_handler *handler, | |
162 | const gdb_byte *buf, size_t size) | |
163 | { | |
164 | if (fwrite (buf, size, 1, handler->datastream_fd) != 1) | |
165 | error (_("Unable to write file for saving trace data (%s)"), | |
166 | safe_strerror (errno)); | |
167 | ||
168 | handler->content_size += size; | |
169 | ||
170 | return 0; | |
171 | } | |
172 | ||
173 | /* Write a unsigned 32-bit integer to datastream file represented by | |
174 | HANDLER. */ | |
175 | ||
176 | #define ctf_save_write_uint32(HANDLER, U32) \ | |
177 | ctf_save_write (HANDLER, (gdb_byte *) &U32, 4) | |
178 | ||
393fd4c3 YQ |
179 | /* Write a signed 32-bit integer to datastream file represented by |
180 | HANDLER. */ | |
181 | ||
182 | #define ctf_save_write_int32(HANDLER, INT32) \ | |
183 | ctf_save_write ((HANDLER), (gdb_byte *) &(INT32), 4) | |
184 | ||
d0353e76 YQ |
185 | /* Set datastream file position. Update HANDLER->content_size |
186 | if WHENCE is SEEK_CUR. */ | |
187 | ||
188 | static int | |
189 | ctf_save_fseek (struct trace_write_handler *handler, long offset, | |
190 | int whence) | |
191 | { | |
192 | gdb_assert (whence != SEEK_END); | |
193 | gdb_assert (whence != SEEK_SET | |
194 | || offset <= handler->content_size + handler->packet_start); | |
195 | ||
196 | if (fseek (handler->datastream_fd, offset, whence)) | |
197 | error (_("Unable to seek file for saving trace data (%s)"), | |
198 | safe_strerror (errno)); | |
199 | ||
200 | if (whence == SEEK_CUR) | |
201 | handler->content_size += offset; | |
202 | ||
203 | return 0; | |
204 | } | |
205 | ||
206 | /* Change the datastream file position to align on ALIGN_SIZE, | |
207 | and write BUF to datastream file. The size of BUF is SIZE. */ | |
208 | ||
209 | static int | |
210 | ctf_save_align_write (struct trace_write_handler *handler, | |
211 | const gdb_byte *buf, | |
212 | size_t size, size_t align_size) | |
213 | { | |
214 | long offset | |
215 | = (align_up (handler->content_size, align_size) | |
216 | - handler->content_size); | |
217 | ||
218 | if (ctf_save_fseek (handler, offset, SEEK_CUR)) | |
219 | return -1; | |
220 | ||
221 | if (ctf_save_write (handler, buf, size)) | |
222 | return -1; | |
223 | ||
224 | return 0; | |
225 | } | |
226 | ||
227 | /* Write events to next new packet. */ | |
228 | ||
229 | static void | |
230 | ctf_save_next_packet (struct trace_write_handler *handler) | |
231 | { | |
232 | handler->packet_start += (handler->content_size + 4); | |
233 | ctf_save_fseek (handler, handler->packet_start, SEEK_SET); | |
234 | handler->content_size = 0; | |
235 | } | |
236 | ||
237 | /* Write the CTF metadata header. */ | |
238 | ||
239 | static void | |
240 | ctf_save_metadata_header (struct trace_write_handler *handler) | |
241 | { | |
d0353e76 YQ |
242 | ctf_save_write_metadata (handler, "/* CTF %d.%d */\n", |
243 | CTF_SAVE_MAJOR, CTF_SAVE_MINOR); | |
244 | ctf_save_write_metadata (handler, | |
245 | "typealias integer { size = 8; align = 8; " | |
246 | "signed = false; encoding = ascii;}" | |
247 | " := ascii;\n"); | |
248 | ctf_save_write_metadata (handler, | |
249 | "typealias integer { size = 8; align = 8; " | |
250 | "signed = false; }" | |
251 | " := uint8_t;\n"); | |
252 | ctf_save_write_metadata (handler, | |
253 | "typealias integer { size = 16; align = 16;" | |
254 | "signed = false; } := uint16_t;\n"); | |
255 | ctf_save_write_metadata (handler, | |
256 | "typealias integer { size = 32; align = 32;" | |
257 | "signed = false; } := uint32_t;\n"); | |
258 | ctf_save_write_metadata (handler, | |
259 | "typealias integer { size = 64; align = 64;" | |
260 | "signed = false; base = hex;}" | |
261 | " := uint64_t;\n"); | |
393fd4c3 YQ |
262 | ctf_save_write_metadata (handler, |
263 | "typealias integer { size = 32; align = 32;" | |
264 | "signed = true; } := int32_t;\n"); | |
265 | ctf_save_write_metadata (handler, | |
266 | "typealias integer { size = 64; align = 64;" | |
267 | "signed = true; } := int64_t;\n"); | |
268 | ctf_save_write_metadata (handler, | |
269 | "typealias string { encoding = ascii;" | |
270 | " } := chars;\n"); | |
d0353e76 YQ |
271 | ctf_save_write_metadata (handler, "\n"); |
272 | ||
8249a5a9 YQ |
273 | /* Get the byte order of the host and write CTF data in this byte |
274 | order. */ | |
275 | #if WORDS_BIGENDIAN | |
276 | #define HOST_ENDIANNESS "be" | |
277 | #else | |
278 | #define HOST_ENDIANNESS "le" | |
279 | #endif | |
280 | ||
7f31862a PA |
281 | ctf_save_write_metadata (handler, |
282 | "\ntrace {\n" | |
283 | " major = %u;\n" | |
284 | " minor = %u;\n" | |
285 | " byte_order = %s;\n" | |
286 | " packet.header := struct {\n" | |
287 | " uint32_t magic;\n" | |
288 | " };\n" | |
289 | "};\n" | |
290 | "\n" | |
291 | "stream {\n" | |
292 | " packet.context := struct {\n" | |
293 | " uint32_t content_size;\n" | |
294 | " uint32_t packet_size;\n" | |
295 | " uint16_t tpnum;\n" | |
296 | " };\n" | |
297 | " event.header := struct {\n" | |
298 | " uint32_t id;\n" | |
299 | " };\n" | |
300 | "};\n", | |
d0353e76 | 301 | CTF_SAVE_MAJOR, CTF_SAVE_MINOR, |
8249a5a9 | 302 | HOST_ENDIANNESS); |
d0353e76 YQ |
303 | ctf_save_write_metadata (handler, "\n"); |
304 | } | |
305 | ||
306 | /* CTF trace writer. */ | |
307 | ||
308 | struct ctf_trace_file_writer | |
309 | { | |
310 | struct trace_file_writer base; | |
311 | ||
312 | /* States related to writing CTF trace file. */ | |
313 | struct trace_write_handler tcs; | |
314 | }; | |
315 | ||
316 | /* This is the implementation of trace_file_write_ops method | |
317 | dtor. */ | |
318 | ||
319 | static void | |
320 | ctf_dtor (struct trace_file_writer *self) | |
321 | { | |
322 | struct ctf_trace_file_writer *writer | |
323 | = (struct ctf_trace_file_writer *) self; | |
324 | ||
325 | if (writer->tcs.metadata_fd != NULL) | |
326 | fclose (writer->tcs.metadata_fd); | |
327 | ||
328 | if (writer->tcs.datastream_fd != NULL) | |
329 | fclose (writer->tcs.datastream_fd); | |
330 | ||
331 | } | |
332 | ||
333 | /* This is the implementation of trace_file_write_ops method | |
334 | target_save. */ | |
335 | ||
336 | static int | |
337 | ctf_target_save (struct trace_file_writer *self, | |
338 | const char *dirname) | |
339 | { | |
340 | /* Don't support save trace file to CTF format in the target. */ | |
341 | return 0; | |
342 | } | |
343 | ||
344 | /* This is the implementation of trace_file_write_ops method | |
345 | start. It creates the directory DIRNAME, metadata and datastream | |
346 | in the directory. */ | |
347 | ||
348 | static void | |
349 | ctf_start (struct trace_file_writer *self, const char *dirname) | |
350 | { | |
d0353e76 YQ |
351 | struct ctf_trace_file_writer *writer |
352 | = (struct ctf_trace_file_writer *) self; | |
840207d8 | 353 | mode_t hmode = S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH; |
d0353e76 YQ |
354 | |
355 | /* Create DIRNAME. */ | |
af307d6a | 356 | if (mkdir (dirname, hmode) && errno != EEXIST) |
d0353e76 YQ |
357 | error (_("Unable to open directory '%s' for saving trace data (%s)"), |
358 | dirname, safe_strerror (errno)); | |
359 | ||
360 | memset (&writer->tcs, '\0', sizeof (writer->tcs)); | |
361 | ||
50feb4bd | 362 | std::string file_name = string_printf ("%s/%s", dirname, CTF_METADATA_NAME); |
d0353e76 | 363 | |
65773341 TT |
364 | writer->tcs.metadata_fd |
365 | = gdb_fopen_cloexec (file_name.c_str (), "w").release (); | |
d0353e76 YQ |
366 | if (writer->tcs.metadata_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 | ctf_save_metadata_header (&writer->tcs); | |
371 | ||
50feb4bd | 372 | file_name = string_printf ("%s/%s", dirname, CTF_DATASTREAM_NAME); |
65773341 TT |
373 | writer->tcs.datastream_fd |
374 | = gdb_fopen_cloexec (file_name.c_str (), "w").release (); | |
d0353e76 YQ |
375 | if (writer->tcs.datastream_fd == NULL) |
376 | error (_("Unable to open file '%s' for saving trace data (%s)"), | |
50feb4bd | 377 | file_name.c_str (), safe_strerror (errno)); |
d0353e76 YQ |
378 | } |
379 | ||
380 | /* This is the implementation of trace_file_write_ops method | |
381 | write_header. Write the types of events on trace variable and | |
382 | frame. */ | |
383 | ||
384 | static void | |
385 | ctf_write_header (struct trace_file_writer *self) | |
386 | { | |
387 | struct ctf_trace_file_writer *writer | |
388 | = (struct ctf_trace_file_writer *) self; | |
389 | ||
390 | ||
391 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
392 | ctf_save_write_metadata (&writer->tcs, | |
393 | "event {\n\tname = \"memory\";\n\tid = %u;\n" | |
394 | "\tfields := struct { \n" | |
395 | "\t\tuint64_t address;\n" | |
396 | "\t\tuint16_t length;\n" | |
397 | "\t\tuint8_t contents[length];\n" | |
398 | "\t};\n" | |
399 | "};\n", CTF_EVENT_ID_MEMORY); | |
400 | ||
401 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
402 | ctf_save_write_metadata (&writer->tcs, | |
403 | "event {\n\tname = \"tsv\";\n\tid = %u;\n" | |
404 | "\tfields := struct { \n" | |
405 | "\t\tuint64_t val;\n" | |
406 | "\t\tuint32_t num;\n" | |
407 | "\t};\n" | |
408 | "};\n", CTF_EVENT_ID_TSV); | |
409 | ||
410 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
411 | ctf_save_write_metadata (&writer->tcs, | |
412 | "event {\n\tname = \"frame\";\n\tid = %u;\n" | |
413 | "\tfields := struct { \n" | |
414 | "\t};\n" | |
415 | "};\n", CTF_EVENT_ID_FRAME); | |
416 | ||
393fd4c3 YQ |
417 | ctf_save_write_metadata (&writer->tcs, "\n"); |
418 | ctf_save_write_metadata (&writer->tcs, | |
419 | "event {\n\tname = \"tsv_def\";\n" | |
420 | "\tid = %u;\n\tfields := struct { \n" | |
421 | "\t\tint64_t initial_value;\n" | |
422 | "\t\tint32_t number;\n" | |
423 | "\t\tint32_t builtin;\n" | |
424 | "\t\tchars name;\n" | |
425 | "\t};\n" | |
426 | "};\n", CTF_EVENT_ID_TSV_DEF); | |
427 | ||
428 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
429 | ctf_save_write_metadata (&writer->tcs, | |
430 | "event {\n\tname = \"tp_def\";\n" | |
431 | "\tid = %u;\n\tfields := struct { \n" | |
432 | "\t\tuint64_t addr;\n" | |
433 | "\t\tuint64_t traceframe_usage;\n" | |
434 | "\t\tint32_t number;\n" | |
435 | "\t\tint32_t enabled;\n" | |
436 | "\t\tint32_t step;\n" | |
437 | "\t\tint32_t pass;\n" | |
438 | "\t\tint32_t hit_count;\n" | |
439 | "\t\tint32_t type;\n" | |
440 | "\t\tchars cond;\n" | |
441 | ||
442 | "\t\tuint32_t action_num;\n" | |
443 | "\t\tchars actions[action_num];\n" | |
444 | ||
445 | "\t\tuint32_t step_action_num;\n" | |
446 | "\t\tchars step_actions[step_action_num];\n" | |
447 | ||
448 | "\t\tchars at_string;\n" | |
449 | "\t\tchars cond_string;\n" | |
450 | ||
451 | "\t\tuint32_t cmd_num;\n" | |
452 | "\t\tchars cmd_strings[cmd_num];\n" | |
453 | "\t};\n" | |
454 | "};\n", CTF_EVENT_ID_TP_DEF); | |
455 | ||
d0353e76 YQ |
456 | gdb_assert (writer->tcs.content_size == 0); |
457 | gdb_assert (writer->tcs.packet_start == 0); | |
393fd4c3 YQ |
458 | |
459 | /* Create a new packet to contain this event. */ | |
460 | self->ops->frame_ops->start (self, 0); | |
d0353e76 YQ |
461 | } |
462 | ||
463 | /* This is the implementation of trace_file_write_ops method | |
464 | write_regblock_type. Write the type of register event in | |
465 | metadata. */ | |
466 | ||
467 | static void | |
468 | ctf_write_regblock_type (struct trace_file_writer *self, int size) | |
469 | { | |
470 | struct ctf_trace_file_writer *writer | |
471 | = (struct ctf_trace_file_writer *) self; | |
472 | ||
473 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
474 | ||
475 | ctf_save_write_metadata (&writer->tcs, | |
476 | "event {\n\tname = \"register\";\n\tid = %u;\n" | |
477 | "\tfields := struct { \n" | |
478 | "\t\tascii contents[%d];\n" | |
479 | "\t};\n" | |
480 | "};\n", | |
481 | CTF_EVENT_ID_REGISTER, size); | |
482 | } | |
483 | ||
484 | /* This is the implementation of trace_file_write_ops method | |
485 | write_status. */ | |
486 | ||
487 | static void | |
488 | ctf_write_status (struct trace_file_writer *self, | |
489 | struct trace_status *ts) | |
490 | { | |
393fd4c3 YQ |
491 | struct ctf_trace_file_writer *writer |
492 | = (struct ctf_trace_file_writer *) self; | |
493 | uint32_t id; | |
393fd4c3 YQ |
494 | |
495 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
496 | ctf_save_write_metadata (&writer->tcs, | |
497 | "event {\n\tname = \"status\";\n\tid = %u;\n" | |
498 | "\tfields := struct { \n" | |
499 | "\t\tint32_t stop_reason;\n" | |
500 | "\t\tint32_t stopping_tracepoint;\n" | |
501 | "\t\tint32_t traceframe_count;\n" | |
502 | "\t\tint32_t traceframes_created;\n" | |
503 | "\t\tint32_t buffer_free;\n" | |
504 | "\t\tint32_t buffer_size;\n" | |
505 | "\t\tint32_t disconnected_tracing;\n" | |
506 | "\t\tint32_t circular_buffer;\n" | |
507 | "\t};\n" | |
508 | "};\n", | |
509 | CTF_EVENT_ID_STATUS); | |
510 | ||
511 | id = CTF_EVENT_ID_STATUS; | |
512 | /* Event Id. */ | |
513 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
514 | ||
515 | ctf_save_write_int32 (&writer->tcs, ts->stop_reason); | |
516 | ctf_save_write_int32 (&writer->tcs, ts->stopping_tracepoint); | |
517 | ctf_save_write_int32 (&writer->tcs, ts->traceframe_count); | |
518 | ctf_save_write_int32 (&writer->tcs, ts->traceframes_created); | |
519 | ctf_save_write_int32 (&writer->tcs, ts->buffer_free); | |
520 | ctf_save_write_int32 (&writer->tcs, ts->buffer_size); | |
521 | ctf_save_write_int32 (&writer->tcs, ts->disconnected_tracing); | |
522 | ctf_save_write_int32 (&writer->tcs, ts->circular_buffer); | |
d0353e76 YQ |
523 | } |
524 | ||
525 | /* This is the implementation of trace_file_write_ops method | |
526 | write_uploaded_tsv. */ | |
527 | ||
528 | static void | |
529 | ctf_write_uploaded_tsv (struct trace_file_writer *self, | |
530 | struct uploaded_tsv *tsv) | |
531 | { | |
393fd4c3 YQ |
532 | struct ctf_trace_file_writer *writer |
533 | = (struct ctf_trace_file_writer *) self; | |
534 | int32_t int32; | |
535 | int64_t int64; | |
393fd4c3 YQ |
536 | const gdb_byte zero = 0; |
537 | ||
538 | /* Event Id. */ | |
539 | int32 = CTF_EVENT_ID_TSV_DEF; | |
540 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int32, 4, 4); | |
541 | ||
542 | /* initial_value */ | |
543 | int64 = tsv->initial_value; | |
544 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int64, 8, 8); | |
545 | ||
546 | /* number */ | |
547 | ctf_save_write_int32 (&writer->tcs, tsv->number); | |
548 | ||
549 | /* builtin */ | |
550 | ctf_save_write_int32 (&writer->tcs, tsv->builtin); | |
551 | ||
552 | /* name */ | |
553 | if (tsv->name != NULL) | |
a398505b PA |
554 | ctf_save_write (&writer->tcs, (gdb_byte *) tsv->name, |
555 | strlen (tsv->name)); | |
393fd4c3 | 556 | ctf_save_write (&writer->tcs, &zero, 1); |
d0353e76 YQ |
557 | } |
558 | ||
559 | /* This is the implementation of trace_file_write_ops method | |
560 | write_uploaded_tp. */ | |
561 | ||
562 | static void | |
563 | ctf_write_uploaded_tp (struct trace_file_writer *self, | |
564 | struct uploaded_tp *tp) | |
565 | { | |
393fd4c3 YQ |
566 | struct ctf_trace_file_writer *writer |
567 | = (struct ctf_trace_file_writer *) self; | |
568 | int32_t int32; | |
569 | int64_t int64; | |
570 | uint32_t u32; | |
571 | const gdb_byte zero = 0; | |
393fd4c3 YQ |
572 | |
573 | /* Event Id. */ | |
574 | int32 = CTF_EVENT_ID_TP_DEF; | |
575 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int32, 4, 4); | |
576 | ||
577 | /* address */ | |
578 | int64 = tp->addr; | |
579 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int64, 8, 8); | |
580 | ||
581 | /* traceframe_usage */ | |
582 | int64 = tp->traceframe_usage; | |
583 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &int64, 8, 8); | |
584 | ||
585 | /* number */ | |
586 | ctf_save_write_int32 (&writer->tcs, tp->number); | |
587 | ||
588 | /* enabled */ | |
589 | ctf_save_write_int32 (&writer->tcs, tp->enabled); | |
590 | ||
591 | /* step */ | |
592 | ctf_save_write_int32 (&writer->tcs, tp->step); | |
593 | ||
594 | /* pass */ | |
595 | ctf_save_write_int32 (&writer->tcs, tp->pass); | |
596 | ||
597 | /* hit_count */ | |
598 | ctf_save_write_int32 (&writer->tcs, tp->hit_count); | |
599 | ||
600 | /* type */ | |
601 | ctf_save_write_int32 (&writer->tcs, tp->type); | |
602 | ||
603 | /* condition */ | |
604 | if (tp->cond != NULL) | |
67aa1f3c PA |
605 | ctf_save_write (&writer->tcs, (gdb_byte *) tp->cond.get (), |
606 | strlen (tp->cond.get ())); | |
393fd4c3 YQ |
607 | ctf_save_write (&writer->tcs, &zero, 1); |
608 | ||
609 | /* actions */ | |
a18ba4e4 | 610 | u32 = tp->actions.size (); |
393fd4c3 | 611 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &u32, 4, 4); |
67aa1f3c PA |
612 | for (const auto &act : tp->actions) |
613 | ctf_save_write (&writer->tcs, (gdb_byte *) act.get (), | |
614 | strlen (act.get ()) + 1); | |
393fd4c3 YQ |
615 | |
616 | /* step_actions */ | |
a18ba4e4 | 617 | u32 = tp->step_actions.size (); |
393fd4c3 | 618 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &u32, 4, 4); |
67aa1f3c PA |
619 | for (const auto &act : tp->step_actions) |
620 | ctf_save_write (&writer->tcs, (gdb_byte *) act.get (), | |
621 | strlen (act.get ()) + 1); | |
393fd4c3 YQ |
622 | |
623 | /* at_string */ | |
624 | if (tp->at_string != NULL) | |
67aa1f3c PA |
625 | ctf_save_write (&writer->tcs, (gdb_byte *) tp->at_string.get (), |
626 | strlen (tp->at_string.get ())); | |
393fd4c3 YQ |
627 | ctf_save_write (&writer->tcs, &zero, 1); |
628 | ||
629 | /* cond_string */ | |
630 | if (tp->cond_string != NULL) | |
67aa1f3c PA |
631 | ctf_save_write (&writer->tcs, (gdb_byte *) tp->cond_string.get (), |
632 | strlen (tp->cond_string.get ())); | |
393fd4c3 YQ |
633 | ctf_save_write (&writer->tcs, &zero, 1); |
634 | ||
635 | /* cmd_strings */ | |
a18ba4e4 | 636 | u32 = tp->cmd_strings.size (); |
393fd4c3 | 637 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &u32, 4, 4); |
67aa1f3c PA |
638 | for (const auto &act : tp->cmd_strings) |
639 | ctf_save_write (&writer->tcs, (gdb_byte *) act.get (), | |
640 | strlen (act.get ()) + 1); | |
393fd4c3 | 641 | |
d0353e76 YQ |
642 | } |
643 | ||
18d3cec5 MK |
644 | /* This is the implementation of trace_file_write_ops method |
645 | write_tdesc. */ | |
646 | ||
647 | static void | |
648 | ctf_write_tdesc (struct trace_file_writer *self) | |
649 | { | |
650 | /* Nothing so far. */ | |
651 | } | |
652 | ||
d0353e76 YQ |
653 | /* This is the implementation of trace_file_write_ops method |
654 | write_definition_end. */ | |
655 | ||
656 | static void | |
657 | ctf_write_definition_end (struct trace_file_writer *self) | |
658 | { | |
393fd4c3 | 659 | self->ops->frame_ops->end (self); |
d0353e76 YQ |
660 | } |
661 | ||
d0353e76 YQ |
662 | /* This is the implementation of trace_file_write_ops method |
663 | end. */ | |
664 | ||
665 | static void | |
666 | ctf_end (struct trace_file_writer *self) | |
667 | { | |
668 | struct ctf_trace_file_writer *writer = (struct ctf_trace_file_writer *) self; | |
669 | ||
670 | gdb_assert (writer->tcs.content_size == 0); | |
d0353e76 YQ |
671 | } |
672 | ||
673 | /* This is the implementation of trace_frame_write_ops method | |
674 | start. */ | |
675 | ||
676 | static void | |
677 | ctf_write_frame_start (struct trace_file_writer *self, uint16_t tpnum) | |
678 | { | |
679 | struct ctf_trace_file_writer *writer | |
680 | = (struct ctf_trace_file_writer *) self; | |
681 | uint32_t id = CTF_EVENT_ID_FRAME; | |
682 | uint32_t u32; | |
683 | ||
684 | /* Step 1: Write packet context. */ | |
685 | /* magic. */ | |
686 | u32 = CTF_MAGIC; | |
687 | ctf_save_write_uint32 (&writer->tcs, u32); | |
688 | /* content_size and packet_size.. We still don't know the value, | |
689 | write it later. */ | |
690 | ctf_save_fseek (&writer->tcs, 4, SEEK_CUR); | |
691 | ctf_save_fseek (&writer->tcs, 4, SEEK_CUR); | |
692 | /* Tracepoint number. */ | |
693 | ctf_save_write (&writer->tcs, (gdb_byte *) &tpnum, 2); | |
694 | ||
695 | /* Step 2: Write event "frame". */ | |
696 | /* Event Id. */ | |
697 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
698 | } | |
699 | ||
700 | /* This is the implementation of trace_frame_write_ops method | |
701 | write_r_block. */ | |
702 | ||
703 | static void | |
704 | ctf_write_frame_r_block (struct trace_file_writer *self, | |
705 | gdb_byte *buf, int32_t size) | |
706 | { | |
707 | struct ctf_trace_file_writer *writer | |
708 | = (struct ctf_trace_file_writer *) self; | |
709 | uint32_t id = CTF_EVENT_ID_REGISTER; | |
710 | ||
711 | /* Event Id. */ | |
712 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
713 | ||
714 | /* array contents. */ | |
715 | ctf_save_align_write (&writer->tcs, buf, size, 1); | |
716 | } | |
717 | ||
718 | /* This is the implementation of trace_frame_write_ops method | |
719 | write_m_block_header. */ | |
720 | ||
721 | static void | |
722 | ctf_write_frame_m_block_header (struct trace_file_writer *self, | |
723 | uint64_t addr, uint16_t length) | |
724 | { | |
725 | struct ctf_trace_file_writer *writer | |
726 | = (struct ctf_trace_file_writer *) self; | |
727 | uint32_t event_id = CTF_EVENT_ID_MEMORY; | |
728 | ||
729 | /* Event Id. */ | |
730 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &event_id, 4, 4); | |
731 | ||
732 | /* Address. */ | |
733 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &addr, 8, 8); | |
734 | ||
735 | /* Length. */ | |
736 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &length, 2, 2); | |
737 | } | |
738 | ||
739 | /* This is the implementation of trace_frame_write_ops method | |
740 | write_m_block_memory. */ | |
741 | ||
742 | static void | |
743 | ctf_write_frame_m_block_memory (struct trace_file_writer *self, | |
744 | gdb_byte *buf, uint16_t length) | |
745 | { | |
746 | struct ctf_trace_file_writer *writer | |
747 | = (struct ctf_trace_file_writer *) self; | |
748 | ||
749 | /* Contents. */ | |
750 | ctf_save_align_write (&writer->tcs, (gdb_byte *) buf, length, 1); | |
751 | } | |
752 | ||
753 | /* This is the implementation of trace_frame_write_ops method | |
754 | write_v_block. */ | |
755 | ||
756 | static void | |
757 | ctf_write_frame_v_block (struct trace_file_writer *self, | |
758 | int32_t num, uint64_t val) | |
759 | { | |
760 | struct ctf_trace_file_writer *writer | |
761 | = (struct ctf_trace_file_writer *) self; | |
762 | uint32_t id = CTF_EVENT_ID_TSV; | |
763 | ||
764 | /* Event Id. */ | |
765 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
766 | ||
767 | /* val. */ | |
768 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &val, 8, 8); | |
769 | /* num. */ | |
770 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &num, 4, 4); | |
771 | } | |
772 | ||
773 | /* This is the implementation of trace_frame_write_ops method | |
774 | end. */ | |
775 | ||
776 | static void | |
777 | ctf_write_frame_end (struct trace_file_writer *self) | |
778 | { | |
779 | struct ctf_trace_file_writer *writer | |
780 | = (struct ctf_trace_file_writer *) self; | |
781 | uint32_t u32; | |
782 | uint32_t t; | |
783 | ||
784 | /* Write the content size to packet header. */ | |
785 | ctf_save_fseek (&writer->tcs, writer->tcs.packet_start + 4, | |
786 | SEEK_SET); | |
787 | u32 = writer->tcs.content_size * TARGET_CHAR_BIT; | |
788 | ||
789 | t = writer->tcs.content_size; | |
790 | ctf_save_write_uint32 (&writer->tcs, u32); | |
791 | ||
792 | /* Write the packet size. */ | |
793 | u32 += 4 * TARGET_CHAR_BIT; | |
794 | ctf_save_write_uint32 (&writer->tcs, u32); | |
795 | ||
796 | writer->tcs.content_size = t; | |
797 | ||
798 | /* Write zero at the end of the packet. */ | |
799 | ctf_save_fseek (&writer->tcs, writer->tcs.packet_start + t, | |
800 | SEEK_SET); | |
801 | u32 = 0; | |
802 | ctf_save_write_uint32 (&writer->tcs, u32); | |
803 | writer->tcs.content_size = t; | |
804 | ||
805 | ctf_save_next_packet (&writer->tcs); | |
806 | } | |
807 | ||
808 | /* Operations to write various types of trace frames into CTF | |
809 | format. */ | |
810 | ||
811 | static const struct trace_frame_write_ops ctf_write_frame_ops = | |
812 | { | |
813 | ctf_write_frame_start, | |
814 | ctf_write_frame_r_block, | |
815 | ctf_write_frame_m_block_header, | |
816 | ctf_write_frame_m_block_memory, | |
817 | ctf_write_frame_v_block, | |
818 | ctf_write_frame_end, | |
819 | }; | |
820 | ||
821 | /* Operations to write trace buffers into CTF format. */ | |
822 | ||
823 | static const struct trace_file_write_ops ctf_write_ops = | |
824 | { | |
825 | ctf_dtor, | |
826 | ctf_target_save, | |
827 | ctf_start, | |
828 | ctf_write_header, | |
829 | ctf_write_regblock_type, | |
830 | ctf_write_status, | |
831 | ctf_write_uploaded_tsv, | |
832 | ctf_write_uploaded_tp, | |
18d3cec5 | 833 | ctf_write_tdesc, |
d0353e76 YQ |
834 | ctf_write_definition_end, |
835 | NULL, | |
836 | &ctf_write_frame_ops, | |
837 | ctf_end, | |
838 | }; | |
839 | ||
840 | /* Return a trace writer for CTF format. */ | |
841 | ||
842 | struct trace_file_writer * | |
843 | ctf_trace_file_writer_new (void) | |
844 | { | |
8d749320 | 845 | struct ctf_trace_file_writer *writer = XNEW (struct ctf_trace_file_writer); |
d0353e76 YQ |
846 | |
847 | writer->base.ops = &ctf_write_ops; | |
848 | ||
849 | return (struct trace_file_writer *) writer; | |
850 | } | |
393fd4c3 YQ |
851 | |
852 | #if HAVE_LIBBABELTRACE | |
853 | /* Use libbabeltrace to read CTF data. The libbabeltrace provides | |
854 | iterator to iterate over each event in CTF data and APIs to get | |
855 | details of event and packet, so it is very convenient to use | |
856 | libbabeltrace to access events in CTF. */ | |
857 | ||
858 | #include <babeltrace/babeltrace.h> | |
859 | #include <babeltrace/ctf/events.h> | |
860 | #include <babeltrace/ctf/iterator.h> | |
861 | ||
862 | /* The struct pointer for current CTF directory. */ | |
614d5099 | 863 | static int handle_id = -1; |
393fd4c3 YQ |
864 | static struct bt_context *ctx = NULL; |
865 | static struct bt_ctf_iter *ctf_iter = NULL; | |
866 | /* The position of the first packet containing trace frame. */ | |
867 | static struct bt_iter_pos *start_pos; | |
868 | ||
869 | /* The name of CTF directory. */ | |
870 | static char *trace_dirname; | |
871 | ||
f6ac5f3d | 872 | static ctf_target ctf_ops; |
393fd4c3 YQ |
873 | |
874 | /* Destroy ctf iterator and context. */ | |
875 | ||
876 | static void | |
877 | ctf_destroy (void) | |
878 | { | |
879 | if (ctf_iter != NULL) | |
880 | { | |
881 | bt_ctf_iter_destroy (ctf_iter); | |
882 | ctf_iter = NULL; | |
883 | } | |
884 | if (ctx != NULL) | |
885 | { | |
886 | bt_context_put (ctx); | |
887 | ctx = NULL; | |
888 | } | |
889 | } | |
890 | ||
891 | /* Open CTF trace data in DIRNAME. */ | |
892 | ||
893 | static void | |
014f9477 | 894 | ctf_open_dir (const char *dirname) |
393fd4c3 | 895 | { |
393fd4c3 | 896 | struct bt_iter_pos begin_pos; |
614d5099 YQ |
897 | unsigned int count, i; |
898 | struct bt_ctf_event_decl * const *list; | |
393fd4c3 YQ |
899 | |
900 | ctx = bt_context_create (); | |
901 | if (ctx == NULL) | |
902 | error (_("Unable to create bt_context")); | |
614d5099 YQ |
903 | handle_id = bt_context_add_trace (ctx, dirname, "ctf", NULL, NULL, NULL); |
904 | if (handle_id < 0) | |
393fd4c3 YQ |
905 | { |
906 | ctf_destroy (); | |
907 | error (_("Unable to use libbabeltrace on directory \"%s\""), | |
908 | dirname); | |
909 | } | |
910 | ||
911 | begin_pos.type = BT_SEEK_BEGIN; | |
912 | ctf_iter = bt_ctf_iter_create (ctx, &begin_pos, NULL); | |
913 | if (ctf_iter == NULL) | |
914 | { | |
915 | ctf_destroy (); | |
916 | error (_("Unable to create bt_iterator")); | |
917 | } | |
918 | ||
614d5099 YQ |
919 | /* Look for the declaration of register block. Get the length of |
920 | array "contents" to set trace_regblock_size. */ | |
393fd4c3 | 921 | |
614d5099 YQ |
922 | bt_ctf_get_event_decl_list (handle_id, ctx, &list, &count); |
923 | for (i = 0; i < count; i++) | |
924 | if (strcmp ("register", bt_ctf_get_decl_event_name (list[i])) == 0) | |
925 | { | |
614d5099 YQ |
926 | const struct bt_ctf_field_decl * const *field_list; |
927 | const struct bt_declaration *decl; | |
393fd4c3 | 928 | |
614d5099 YQ |
929 | bt_ctf_get_decl_fields (list[i], BT_EVENT_FIELDS, &field_list, |
930 | &count); | |
393fd4c3 | 931 | |
614d5099 YQ |
932 | gdb_assert (count == 1); |
933 | gdb_assert (0 == strcmp ("contents", | |
934 | bt_ctf_get_decl_field_name (field_list[0]))); | |
935 | decl = bt_ctf_get_decl_from_field_decl (field_list[0]); | |
936 | trace_regblock_size = bt_ctf_get_array_len (decl); | |
393fd4c3 | 937 | |
393fd4c3 | 938 | break; |
614d5099 | 939 | } |
393fd4c3 YQ |
940 | } |
941 | ||
942 | #define SET_INT32_FIELD(EVENT, SCOPE, VAR, FIELD) \ | |
943 | (VAR)->FIELD = (int) bt_ctf_get_int64 (bt_ctf_get_field ((EVENT), \ | |
944 | (SCOPE), \ | |
945 | #FIELD)) | |
946 | ||
e0d13cbd SM |
947 | #define SET_ENUM_FIELD(EVENT, SCOPE, VAR, TYPE, FIELD) \ |
948 | (VAR)->FIELD = (TYPE) bt_ctf_get_int64 (bt_ctf_get_field ((EVENT), \ | |
949 | (SCOPE), \ | |
950 | #FIELD)) | |
951 | ||
952 | ||
393fd4c3 YQ |
953 | /* EVENT is the "status" event and TS is filled in. */ |
954 | ||
955 | static void | |
956 | ctf_read_status (struct bt_ctf_event *event, struct trace_status *ts) | |
957 | { | |
958 | const struct bt_definition *scope | |
959 | = bt_ctf_get_top_level_scope (event, BT_EVENT_FIELDS); | |
960 | ||
e0d13cbd | 961 | SET_ENUM_FIELD (event, scope, ts, enum trace_stop_reason, stop_reason); |
393fd4c3 YQ |
962 | SET_INT32_FIELD (event, scope, ts, stopping_tracepoint); |
963 | SET_INT32_FIELD (event, scope, ts, traceframe_count); | |
964 | SET_INT32_FIELD (event, scope, ts, traceframes_created); | |
965 | SET_INT32_FIELD (event, scope, ts, buffer_free); | |
966 | SET_INT32_FIELD (event, scope, ts, buffer_size); | |
967 | SET_INT32_FIELD (event, scope, ts, disconnected_tracing); | |
968 | SET_INT32_FIELD (event, scope, ts, circular_buffer); | |
969 | ||
970 | bt_iter_next (bt_ctf_get_iter (ctf_iter)); | |
971 | } | |
972 | ||
973 | /* Read the events "tsv_def" one by one, extract its contents and fill | |
974 | in the list UPLOADED_TSVS. */ | |
975 | ||
976 | static void | |
977 | ctf_read_tsv (struct uploaded_tsv **uploaded_tsvs) | |
978 | { | |
979 | gdb_assert (ctf_iter != NULL); | |
980 | ||
981 | while (1) | |
982 | { | |
983 | struct bt_ctf_event *event; | |
984 | const struct bt_definition *scope; | |
985 | const struct bt_definition *def; | |
986 | uint32_t event_id; | |
987 | struct uploaded_tsv *utsv = NULL; | |
988 | ||
989 | event = bt_ctf_iter_read_event (ctf_iter); | |
990 | scope = bt_ctf_get_top_level_scope (event, | |
991 | BT_STREAM_EVENT_HEADER); | |
992 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, | |
993 | "id")); | |
994 | if (event_id != CTF_EVENT_ID_TSV_DEF) | |
995 | break; | |
996 | ||
997 | scope = bt_ctf_get_top_level_scope (event, | |
998 | BT_EVENT_FIELDS); | |
999 | ||
1000 | def = bt_ctf_get_field (event, scope, "number"); | |
1001 | utsv = get_uploaded_tsv ((int32_t) bt_ctf_get_int64 (def), | |
1002 | uploaded_tsvs); | |
1003 | ||
1004 | def = bt_ctf_get_field (event, scope, "builtin"); | |
1005 | utsv->builtin = (int32_t) bt_ctf_get_int64 (def); | |
1006 | def = bt_ctf_get_field (event, scope, "initial_value"); | |
1007 | utsv->initial_value = bt_ctf_get_int64 (def); | |
1008 | ||
1009 | def = bt_ctf_get_field (event, scope, "name"); | |
1010 | utsv->name = xstrdup (bt_ctf_get_string (def)); | |
1011 | ||
1012 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1013 | break; | |
1014 | } | |
1015 | ||
1016 | } | |
1017 | ||
1018 | /* Read the value of element whose index is NUM from CTF and write it | |
1019 | to the corresponding VAR->ARRAY. */ | |
1020 | ||
1021 | #define SET_ARRAY_FIELD(EVENT, SCOPE, VAR, NUM, ARRAY) \ | |
1022 | do \ | |
1023 | { \ | |
b926417a | 1024 | uint32_t lu32, i; \ |
393fd4c3 YQ |
1025 | const struct bt_definition *def; \ |
1026 | \ | |
b926417a TT |
1027 | lu32 = (uint32_t) bt_ctf_get_uint64 (bt_ctf_get_field ((EVENT), \ |
1028 | (SCOPE), \ | |
1029 | #NUM)); \ | |
393fd4c3 | 1030 | def = bt_ctf_get_field ((EVENT), (SCOPE), #ARRAY); \ |
b926417a | 1031 | for (i = 0; i < lu32; i++) \ |
393fd4c3 YQ |
1032 | { \ |
1033 | const struct bt_definition *element \ | |
1034 | = bt_ctf_get_index ((EVENT), def, i); \ | |
1035 | \ | |
67aa1f3c | 1036 | (VAR)->ARRAY.emplace_back \ |
a18ba4e4 | 1037 | (xstrdup (bt_ctf_get_string (element))); \ |
393fd4c3 YQ |
1038 | } \ |
1039 | } \ | |
1040 | while (0) | |
1041 | ||
1042 | /* Read a string from CTF and set VAR->FIELD. If the length of string | |
1043 | is zero, set VAR->FIELD to NULL. */ | |
1044 | ||
1045 | #define SET_STRING_FIELD(EVENT, SCOPE, VAR, FIELD) \ | |
1046 | do \ | |
1047 | { \ | |
1048 | const char *p = bt_ctf_get_string (bt_ctf_get_field ((EVENT), \ | |
1049 | (SCOPE), \ | |
1050 | #FIELD)); \ | |
1051 | \ | |
1052 | if (strlen (p) > 0) \ | |
67aa1f3c | 1053 | (VAR)->FIELD.reset (xstrdup (p)); \ |
393fd4c3 YQ |
1054 | else \ |
1055 | (VAR)->FIELD = NULL; \ | |
1056 | } \ | |
1057 | while (0) | |
1058 | ||
1059 | /* Read the events "tp_def" one by one, extract its contents and fill | |
1060 | in the list UPLOADED_TPS. */ | |
1061 | ||
1062 | static void | |
1063 | ctf_read_tp (struct uploaded_tp **uploaded_tps) | |
1064 | { | |
1065 | gdb_assert (ctf_iter != NULL); | |
1066 | ||
1067 | while (1) | |
1068 | { | |
1069 | struct bt_ctf_event *event; | |
1070 | const struct bt_definition *scope; | |
1071 | uint32_t u32; | |
1072 | int32_t int32; | |
1073 | uint64_t u64; | |
1074 | struct uploaded_tp *utp = NULL; | |
1075 | ||
1076 | event = bt_ctf_iter_read_event (ctf_iter); | |
1077 | scope = bt_ctf_get_top_level_scope (event, | |
1078 | BT_STREAM_EVENT_HEADER); | |
1079 | u32 = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, | |
1080 | "id")); | |
1081 | if (u32 != CTF_EVENT_ID_TP_DEF) | |
1082 | break; | |
1083 | ||
1084 | scope = bt_ctf_get_top_level_scope (event, | |
1085 | BT_EVENT_FIELDS); | |
1086 | int32 = (int32_t) bt_ctf_get_int64 (bt_ctf_get_field (event, | |
1087 | scope, | |
1088 | "number")); | |
1089 | u64 = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, | |
1090 | "addr")); | |
1091 | utp = get_uploaded_tp (int32, u64, uploaded_tps); | |
1092 | ||
1093 | SET_INT32_FIELD (event, scope, utp, enabled); | |
1094 | SET_INT32_FIELD (event, scope, utp, step); | |
1095 | SET_INT32_FIELD (event, scope, utp, pass); | |
1096 | SET_INT32_FIELD (event, scope, utp, hit_count); | |
e0d13cbd | 1097 | SET_ENUM_FIELD (event, scope, utp, enum bptype, type); |
393fd4c3 YQ |
1098 | |
1099 | /* Read 'cmd_strings'. */ | |
1100 | SET_ARRAY_FIELD (event, scope, utp, cmd_num, cmd_strings); | |
1101 | /* Read 'actions'. */ | |
1102 | SET_ARRAY_FIELD (event, scope, utp, action_num, actions); | |
1103 | /* Read 'step_actions'. */ | |
1104 | SET_ARRAY_FIELD (event, scope, utp, step_action_num, | |
1105 | step_actions); | |
1106 | ||
1107 | SET_STRING_FIELD(event, scope, utp, at_string); | |
1108 | SET_STRING_FIELD(event, scope, utp, cond_string); | |
1109 | ||
1110 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1111 | break; | |
1112 | } | |
1113 | } | |
1114 | ||
1115 | /* This is the implementation of target_ops method to_open. Open CTF | |
1116 | trace data, read trace status, trace state variables and tracepoint | |
1117 | definitions from the first packet. Set the start position at the | |
1118 | second packet which contains events on trace blocks. */ | |
1119 | ||
d9f719f1 PA |
1120 | static void |
1121 | ctf_target_open (const char *dirname, int from_tty) | |
393fd4c3 YQ |
1122 | { |
1123 | struct bt_ctf_event *event; | |
1124 | uint32_t event_id; | |
1125 | const struct bt_definition *scope; | |
1126 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
1127 | struct uploaded_tp *uploaded_tps = NULL; | |
1128 | ||
1129 | if (!dirname) | |
1130 | error (_("No CTF directory specified.")); | |
1131 | ||
1132 | ctf_open_dir (dirname); | |
1133 | ||
1134 | target_preopen (from_tty); | |
1135 | ||
1136 | /* Skip the first packet which about the trace status. The first | |
1137 | event is "frame". */ | |
1138 | event = bt_ctf_iter_read_event (ctf_iter); | |
1139 | scope = bt_ctf_get_top_level_scope (event, BT_STREAM_EVENT_HEADER); | |
1140 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "id")); | |
1141 | if (event_id != CTF_EVENT_ID_FRAME) | |
1142 | error (_("Wrong event id of the first event")); | |
1143 | /* The second event is "status". */ | |
1144 | bt_iter_next (bt_ctf_get_iter (ctf_iter)); | |
1145 | event = bt_ctf_iter_read_event (ctf_iter); | |
1146 | scope = bt_ctf_get_top_level_scope (event, BT_STREAM_EVENT_HEADER); | |
1147 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "id")); | |
1148 | if (event_id != CTF_EVENT_ID_STATUS) | |
1149 | error (_("Wrong event id of the second event")); | |
1150 | ctf_read_status (event, current_trace_status ()); | |
1151 | ||
1152 | ctf_read_tsv (&uploaded_tsvs); | |
1153 | ||
1154 | ctf_read_tp (&uploaded_tps); | |
1155 | ||
1156 | event = bt_ctf_iter_read_event (ctf_iter); | |
1157 | /* EVENT can be NULL if we've already gone to the end of stream of | |
1158 | events. */ | |
1159 | if (event != NULL) | |
1160 | { | |
1161 | scope = bt_ctf_get_top_level_scope (event, | |
1162 | BT_STREAM_EVENT_HEADER); | |
1163 | event_id = bt_ctf_get_uint64 (bt_ctf_get_field (event, | |
1164 | scope, "id")); | |
1165 | if (event_id != CTF_EVENT_ID_FRAME) | |
1166 | error (_("Wrong event id of the first event of the second packet")); | |
1167 | } | |
1168 | ||
1169 | start_pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1170 | gdb_assert (start_pos->type == BT_SEEK_RESTORE); | |
1171 | ||
1172 | trace_dirname = xstrdup (dirname); | |
1173 | push_target (&ctf_ops); | |
1174 | ||
de7b2893 | 1175 | inferior_appeared (current_inferior (), CTF_PID); |
f2907e49 | 1176 | inferior_ptid = ptid_t (CTF_PID); |
de7b2893 YQ |
1177 | add_thread_silent (inferior_ptid); |
1178 | ||
393fd4c3 YQ |
1179 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
1180 | merge_uploaded_tracepoints (&uploaded_tps); | |
5723a6fd YQ |
1181 | |
1182 | post_create_inferior (&ctf_ops, from_tty); | |
393fd4c3 YQ |
1183 | } |
1184 | ||
1185 | /* This is the implementation of target_ops method to_close. Destroy | |
1186 | CTF iterator and context. */ | |
1187 | ||
f6ac5f3d PA |
1188 | void |
1189 | ctf_target::close () | |
393fd4c3 YQ |
1190 | { |
1191 | ctf_destroy (); | |
1192 | xfree (trace_dirname); | |
1193 | trace_dirname = NULL; | |
aef525cb | 1194 | |
de7b2893 | 1195 | inferior_ptid = null_ptid; /* Avoid confusion from thread stuff. */ |
00431a78 | 1196 | exit_inferior_silent (current_inferior ()); |
de7b2893 | 1197 | |
aef525cb | 1198 | trace_reset_local_state (); |
393fd4c3 YQ |
1199 | } |
1200 | ||
1201 | /* This is the implementation of target_ops method to_files_info. | |
1202 | Print the directory name of CTF trace data. */ | |
1203 | ||
f6ac5f3d PA |
1204 | void |
1205 | ctf_target::files_info () | |
393fd4c3 YQ |
1206 | { |
1207 | printf_filtered ("\t`%s'\n", trace_dirname); | |
1208 | } | |
1209 | ||
1210 | /* This is the implementation of target_ops method to_fetch_registers. | |
1211 | Iterate over events whose name is "register" in current frame, | |
1212 | extract contents from events, and set REGCACHE with the contents. | |
1213 | If no matched events are found, mark registers unavailable. */ | |
1214 | ||
f6ac5f3d PA |
1215 | void |
1216 | ctf_target::fetch_registers (struct regcache *regcache, int regno) | |
393fd4c3 | 1217 | { |
ac7936df | 1218 | struct gdbarch *gdbarch = regcache->arch (); |
393fd4c3 YQ |
1219 | struct bt_ctf_event *event = NULL; |
1220 | struct bt_iter_pos *pos; | |
1221 | ||
1222 | /* An uninitialized reg size says we're not going to be | |
1223 | successful at getting register blocks. */ | |
1224 | if (trace_regblock_size == 0) | |
1225 | return; | |
1226 | ||
1227 | gdb_assert (ctf_iter != NULL); | |
1228 | /* Save the current position. */ | |
1229 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1230 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1231 | ||
1232 | while (1) | |
1233 | { | |
1234 | const char *name; | |
1235 | struct bt_ctf_event *event1; | |
1236 | ||
1237 | event1 = bt_ctf_iter_read_event (ctf_iter); | |
1238 | ||
1239 | name = bt_ctf_event_name (event1); | |
1240 | ||
1241 | if (name == NULL || strcmp (name, "frame") == 0) | |
1242 | break; | |
1243 | else if (strcmp (name, "register") == 0) | |
1244 | { | |
1245 | event = event1; | |
1246 | break; | |
1247 | } | |
1248 | ||
1249 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1250 | break; | |
1251 | } | |
1252 | ||
1253 | /* Restore the position. */ | |
1254 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1255 | ||
1256 | if (event != NULL) | |
1257 | { | |
48b6e87e | 1258 | int offset, regsize, regn; |
393fd4c3 YQ |
1259 | const struct bt_definition *scope |
1260 | = bt_ctf_get_top_level_scope (event, | |
1261 | BT_EVENT_FIELDS); | |
1262 | const struct bt_definition *array | |
1263 | = bt_ctf_get_field (event, scope, "contents"); | |
48b6e87e | 1264 | gdb_byte *regs = (gdb_byte *) bt_ctf_get_char_array (array); |
393fd4c3 | 1265 | |
393fd4c3 YQ |
1266 | /* Assume the block is laid out in GDB register number order, |
1267 | each register with the size that it has in GDB. */ | |
1268 | offset = 0; | |
1269 | for (regn = 0; regn < gdbarch_num_regs (gdbarch); regn++) | |
1270 | { | |
1271 | regsize = register_size (gdbarch, regn); | |
1272 | /* Make sure we stay within block bounds. */ | |
1273 | if (offset + regsize >= trace_regblock_size) | |
1274 | break; | |
0ec9f114 | 1275 | if (regcache->get_register_status (regn) == REG_UNKNOWN) |
393fd4c3 YQ |
1276 | { |
1277 | if (regno == regn) | |
1278 | { | |
73e1c03f | 1279 | regcache->raw_supply (regno, regs + offset); |
393fd4c3 YQ |
1280 | break; |
1281 | } | |
1282 | else if (regno == -1) | |
1283 | { | |
73e1c03f | 1284 | regcache->raw_supply (regn, regs + offset); |
393fd4c3 YQ |
1285 | } |
1286 | } | |
1287 | offset += regsize; | |
1288 | } | |
393fd4c3 | 1289 | } |
48b6e87e YQ |
1290 | else |
1291 | tracefile_fetch_registers (regcache, regno); | |
393fd4c3 YQ |
1292 | } |
1293 | ||
1294 | /* This is the implementation of target_ops method to_xfer_partial. | |
1295 | Iterate over events whose name is "memory" in | |
1296 | current frame, extract the address and length from events. If | |
1297 | OFFSET is within the range, read the contents from events to | |
1298 | READBUF. */ | |
1299 | ||
f6ac5f3d PA |
1300 | enum target_xfer_status |
1301 | ctf_target::xfer_partial (enum target_object object, | |
1302 | const char *annex, gdb_byte *readbuf, | |
1303 | const gdb_byte *writebuf, ULONGEST offset, | |
1304 | ULONGEST len, ULONGEST *xfered_len) | |
393fd4c3 YQ |
1305 | { |
1306 | /* We're only doing regular memory for now. */ | |
1307 | if (object != TARGET_OBJECT_MEMORY) | |
c9244484 | 1308 | return TARGET_XFER_E_IO; |
393fd4c3 YQ |
1309 | |
1310 | if (readbuf == NULL) | |
1311 | error (_("ctf_xfer_partial: trace file is read-only")); | |
1312 | ||
1313 | if (get_traceframe_number () != -1) | |
1314 | { | |
1315 | struct bt_iter_pos *pos; | |
8acf9577 | 1316 | enum target_xfer_status res; |
290a839c YQ |
1317 | /* Records the lowest available address of all blocks that |
1318 | intersects the requested range. */ | |
1319 | ULONGEST low_addr_available = 0; | |
393fd4c3 YQ |
1320 | |
1321 | gdb_assert (ctf_iter != NULL); | |
1322 | /* Save the current position. */ | |
1323 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1324 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1325 | ||
1326 | /* Iterate through the traceframe's blocks, looking for | |
1327 | memory. */ | |
1328 | while (1) | |
1329 | { | |
1330 | ULONGEST amt; | |
1331 | uint64_t maddr; | |
1332 | uint16_t mlen; | |
393fd4c3 YQ |
1333 | const struct bt_definition *scope; |
1334 | const struct bt_definition *def; | |
1335 | struct bt_ctf_event *event | |
1336 | = bt_ctf_iter_read_event (ctf_iter); | |
1337 | const char *name = bt_ctf_event_name (event); | |
1338 | ||
dac3e710 | 1339 | if (name == NULL || strcmp (name, "frame") == 0) |
393fd4c3 YQ |
1340 | break; |
1341 | else if (strcmp (name, "memory") != 0) | |
1342 | { | |
1343 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1344 | break; | |
1345 | ||
1346 | continue; | |
1347 | } | |
1348 | ||
1349 | scope = bt_ctf_get_top_level_scope (event, | |
1350 | BT_EVENT_FIELDS); | |
1351 | ||
1352 | def = bt_ctf_get_field (event, scope, "address"); | |
1353 | maddr = bt_ctf_get_uint64 (def); | |
1354 | def = bt_ctf_get_field (event, scope, "length"); | |
1355 | mlen = (uint16_t) bt_ctf_get_uint64 (def); | |
1356 | ||
1357 | /* If the block includes the first part of the desired | |
1358 | range, return as much it has; GDB will re-request the | |
1359 | remainder, which might be in a different block of this | |
1360 | trace frame. */ | |
1361 | if (maddr <= offset && offset < (maddr + mlen)) | |
1362 | { | |
1363 | const struct bt_definition *array | |
1364 | = bt_ctf_get_field (event, scope, "contents"); | |
393fd4c3 YQ |
1365 | gdb_byte *contents; |
1366 | int k; | |
1367 | ||
224c3ddb | 1368 | contents = (gdb_byte *) xmalloc (mlen); |
393fd4c3 YQ |
1369 | |
1370 | for (k = 0; k < mlen; k++) | |
1371 | { | |
1372 | const struct bt_definition *element | |
1373 | = bt_ctf_get_index (event, array, k); | |
1374 | ||
1375 | contents[k] = (gdb_byte) bt_ctf_get_uint64 (element); | |
1376 | } | |
1377 | ||
1378 | amt = (maddr + mlen) - offset; | |
1379 | if (amt > len) | |
1380 | amt = len; | |
1381 | ||
1382 | memcpy (readbuf, &contents[offset - maddr], amt); | |
1383 | ||
1384 | xfree (contents); | |
1385 | ||
1386 | /* Restore the position. */ | |
1387 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1388 | ||
9b409511 YQ |
1389 | if (amt == 0) |
1390 | return TARGET_XFER_EOF; | |
1391 | else | |
1392 | { | |
1393 | *xfered_len = amt; | |
1394 | return TARGET_XFER_OK; | |
1395 | } | |
393fd4c3 YQ |
1396 | } |
1397 | ||
290a839c YQ |
1398 | if (offset < maddr && maddr < (offset + len)) |
1399 | if (low_addr_available == 0 || low_addr_available > maddr) | |
1400 | low_addr_available = maddr; | |
1401 | ||
393fd4c3 YQ |
1402 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) |
1403 | break; | |
1404 | } | |
1405 | ||
1406 | /* Restore the position. */ | |
1407 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
393fd4c3 | 1408 | |
8acf9577 YQ |
1409 | /* Requested memory is unavailable in the context of traceframes, |
1410 | and this address falls within a read-only section, fallback | |
290a839c YQ |
1411 | to reading from executable, up to LOW_ADDR_AVAILABLE */ |
1412 | if (offset < low_addr_available) | |
325fac50 | 1413 | len = std::min (len, low_addr_available - offset); |
8acf9577 YQ |
1414 | res = exec_read_partial_read_only (readbuf, offset, len, xfered_len); |
1415 | ||
1416 | if (res == TARGET_XFER_OK) | |
1417 | return TARGET_XFER_OK; | |
1418 | else | |
1419 | { | |
1420 | /* No use trying further, we know some memory starting | |
1421 | at MEMADDR isn't available. */ | |
1422 | *xfered_len = len; | |
1423 | return TARGET_XFER_UNAVAILABLE; | |
1424 | } | |
1ee79381 YQ |
1425 | } |
1426 | else | |
1427 | { | |
1428 | /* Fallback to reading from read-only sections. */ | |
1429 | return section_table_read_available_memory (readbuf, offset, len, xfered_len); | |
1430 | } | |
393fd4c3 YQ |
1431 | } |
1432 | ||
1433 | /* This is the implementation of target_ops method | |
1434 | to_get_trace_state_variable_value. | |
1435 | Iterate over events whose name is "tsv" in current frame. When the | |
1436 | trace variable is found, set the value of it to *VAL and return | |
1437 | true, otherwise return false. */ | |
1438 | ||
57810aa7 | 1439 | bool |
f6ac5f3d | 1440 | ctf_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
393fd4c3 YQ |
1441 | { |
1442 | struct bt_iter_pos *pos; | |
57810aa7 | 1443 | bool found = false; |
393fd4c3 YQ |
1444 | |
1445 | gdb_assert (ctf_iter != NULL); | |
1446 | /* Save the current position. */ | |
1447 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1448 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1449 | ||
1450 | /* Iterate through the traceframe's blocks, looking for 'V' | |
1451 | block. */ | |
1452 | while (1) | |
1453 | { | |
1454 | struct bt_ctf_event *event | |
1455 | = bt_ctf_iter_read_event (ctf_iter); | |
1456 | const char *name = bt_ctf_event_name (event); | |
1457 | ||
1458 | if (name == NULL || strcmp (name, "frame") == 0) | |
1459 | break; | |
1460 | else if (strcmp (name, "tsv") == 0) | |
1461 | { | |
1462 | const struct bt_definition *scope; | |
1463 | const struct bt_definition *def; | |
1464 | ||
1465 | scope = bt_ctf_get_top_level_scope (event, | |
1466 | BT_EVENT_FIELDS); | |
1467 | ||
1468 | def = bt_ctf_get_field (event, scope, "num"); | |
1469 | if (tsvnum == (int32_t) bt_ctf_get_uint64 (def)) | |
1470 | { | |
1471 | def = bt_ctf_get_field (event, scope, "val"); | |
1472 | *val = bt_ctf_get_uint64 (def); | |
1473 | ||
57810aa7 | 1474 | found = true; |
393fd4c3 YQ |
1475 | } |
1476 | } | |
1477 | ||
1478 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1479 | break; | |
1480 | } | |
1481 | ||
1482 | /* Restore the position. */ | |
1483 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1484 | ||
1485 | return found; | |
1486 | } | |
1487 | ||
1488 | /* Return the tracepoint number in "frame" event. */ | |
1489 | ||
1490 | static int | |
1491 | ctf_get_tpnum_from_frame_event (struct bt_ctf_event *event) | |
1492 | { | |
1493 | /* The packet context of events has a field "tpnum". */ | |
1494 | const struct bt_definition *scope | |
1495 | = bt_ctf_get_top_level_scope (event, BT_STREAM_PACKET_CONTEXT); | |
1496 | uint64_t tpnum | |
1497 | = bt_ctf_get_uint64 (bt_ctf_get_field (event, scope, "tpnum")); | |
1498 | ||
1499 | return (int) tpnum; | |
1500 | } | |
1501 | ||
1502 | /* Return the address at which the current frame was collected. */ | |
1503 | ||
1504 | static CORE_ADDR | |
1505 | ctf_get_traceframe_address (void) | |
1506 | { | |
1507 | struct bt_ctf_event *event = NULL; | |
1508 | struct bt_iter_pos *pos; | |
1509 | CORE_ADDR addr = 0; | |
1510 | ||
1511 | gdb_assert (ctf_iter != NULL); | |
1512 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1513 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1514 | ||
1515 | while (1) | |
1516 | { | |
1517 | const char *name; | |
1518 | struct bt_ctf_event *event1; | |
1519 | ||
1520 | event1 = bt_ctf_iter_read_event (ctf_iter); | |
1521 | ||
1522 | name = bt_ctf_event_name (event1); | |
1523 | ||
1524 | if (name == NULL) | |
1525 | break; | |
1526 | else if (strcmp (name, "frame") == 0) | |
1527 | { | |
1528 | event = event1; | |
1529 | break; | |
1530 | } | |
1531 | ||
1532 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1533 | break; | |
1534 | } | |
1535 | ||
1536 | if (event != NULL) | |
1537 | { | |
1538 | int tpnum = ctf_get_tpnum_from_frame_event (event); | |
1539 | struct tracepoint *tp | |
1540 | = get_tracepoint_by_number_on_target (tpnum); | |
1541 | ||
c1fc2657 SM |
1542 | if (tp && tp->loc) |
1543 | addr = tp->loc->address; | |
393fd4c3 YQ |
1544 | } |
1545 | ||
1546 | /* Restore the position. */ | |
1547 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1548 | ||
1549 | return addr; | |
1550 | } | |
1551 | ||
1552 | /* This is the implementation of target_ops method to_trace_find. | |
1553 | Iterate the events whose name is "frame", extract the tracepoint | |
1554 | number in it. Return traceframe number when matched. */ | |
1555 | ||
f6ac5f3d PA |
1556 | int |
1557 | ctf_target::trace_find (enum trace_find_type type, int num, | |
1558 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) | |
393fd4c3 | 1559 | { |
393fd4c3 YQ |
1560 | int tfnum = 0; |
1561 | int found = 0; | |
393fd4c3 YQ |
1562 | |
1563 | if (num == -1) | |
1564 | { | |
1565 | if (tpp != NULL) | |
1566 | *tpp = -1; | |
1567 | return -1; | |
1568 | } | |
1569 | ||
1570 | gdb_assert (ctf_iter != NULL); | |
1571 | /* Set iterator back to the start. */ | |
1572 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), start_pos); | |
1573 | ||
1574 | while (1) | |
1575 | { | |
393fd4c3 YQ |
1576 | struct bt_ctf_event *event; |
1577 | const char *name; | |
1578 | ||
1579 | event = bt_ctf_iter_read_event (ctf_iter); | |
1580 | ||
1581 | name = bt_ctf_event_name (event); | |
1582 | ||
1583 | if (event == NULL || name == NULL) | |
1584 | break; | |
1585 | ||
1586 | if (strcmp (name, "frame") == 0) | |
1587 | { | |
1588 | CORE_ADDR tfaddr; | |
1589 | ||
1590 | if (type == tfind_number) | |
1591 | { | |
1592 | /* Looking for a specific trace frame. */ | |
1593 | if (tfnum == num) | |
1594 | found = 1; | |
1595 | } | |
1596 | else | |
1597 | { | |
1598 | /* Start from the _next_ trace frame. */ | |
1599 | if (tfnum > get_traceframe_number ()) | |
1600 | { | |
1601 | switch (type) | |
1602 | { | |
1603 | case tfind_tp: | |
1604 | { | |
1605 | struct tracepoint *tp = get_tracepoint (num); | |
1606 | ||
1607 | if (tp != NULL | |
1608 | && (tp->number_on_target | |
1609 | == ctf_get_tpnum_from_frame_event (event))) | |
1610 | found = 1; | |
1611 | break; | |
1612 | } | |
1613 | case tfind_pc: | |
1614 | tfaddr = ctf_get_traceframe_address (); | |
1615 | if (tfaddr == addr1) | |
1616 | found = 1; | |
1617 | break; | |
1618 | case tfind_range: | |
1619 | tfaddr = ctf_get_traceframe_address (); | |
1620 | if (addr1 <= tfaddr && tfaddr <= addr2) | |
1621 | found = 1; | |
1622 | break; | |
1623 | case tfind_outside: | |
1624 | tfaddr = ctf_get_traceframe_address (); | |
1625 | if (!(addr1 <= tfaddr && tfaddr <= addr2)) | |
1626 | found = 1; | |
1627 | break; | |
1628 | default: | |
1629 | internal_error (__FILE__, __LINE__, _("unknown tfind type")); | |
1630 | } | |
1631 | } | |
1632 | } | |
1633 | if (found) | |
1634 | { | |
1635 | if (tpp != NULL) | |
1636 | *tpp = ctf_get_tpnum_from_frame_event (event); | |
1637 | ||
1638 | /* Skip the event "frame". */ | |
1639 | bt_iter_next (bt_ctf_get_iter (ctf_iter)); | |
1640 | ||
1641 | return tfnum; | |
1642 | } | |
1643 | tfnum++; | |
1644 | } | |
1645 | ||
1646 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1647 | break; | |
1648 | } | |
1649 | ||
1650 | return -1; | |
1651 | } | |
1652 | ||
393fd4c3 YQ |
1653 | /* This is the implementation of target_ops method to_traceframe_info. |
1654 | Iterate the events whose name is "memory", in current | |
1655 | frame, extract memory range information, and return them in | |
1656 | traceframe_info. */ | |
1657 | ||
f6ac5f3d PA |
1658 | traceframe_info_up |
1659 | ctf_target::traceframe_info () | |
393fd4c3 | 1660 | { |
f6ac5f3d | 1661 | traceframe_info_up info (new struct traceframe_info); |
393fd4c3 YQ |
1662 | const char *name; |
1663 | struct bt_iter_pos *pos; | |
1664 | ||
1665 | gdb_assert (ctf_iter != NULL); | |
1666 | /* Save the current position. */ | |
1667 | pos = bt_iter_get_pos (bt_ctf_get_iter (ctf_iter)); | |
1668 | gdb_assert (pos->type == BT_SEEK_RESTORE); | |
1669 | ||
1670 | do | |
1671 | { | |
1672 | struct bt_ctf_event *event | |
1673 | = bt_ctf_iter_read_event (ctf_iter); | |
1674 | ||
1675 | name = bt_ctf_event_name (event); | |
1676 | ||
1677 | if (name == NULL || strcmp (name, "register") == 0 | |
1678 | || strcmp (name, "frame") == 0) | |
1679 | ; | |
1680 | else if (strcmp (name, "memory") == 0) | |
1681 | { | |
1682 | const struct bt_definition *scope | |
1683 | = bt_ctf_get_top_level_scope (event, | |
1684 | BT_EVENT_FIELDS); | |
1685 | const struct bt_definition *def; | |
393fd4c3 | 1686 | |
393fd4c3 | 1687 | def = bt_ctf_get_field (event, scope, "address"); |
4cdd21a8 | 1688 | CORE_ADDR start = bt_ctf_get_uint64 (def); |
393fd4c3 YQ |
1689 | |
1690 | def = bt_ctf_get_field (event, scope, "length"); | |
4cdd21a8 SM |
1691 | int length = (uint16_t) bt_ctf_get_uint64 (def); |
1692 | ||
1693 | info->memory.emplace_back (start, length); | |
393fd4c3 | 1694 | } |
28a93511 YQ |
1695 | else if (strcmp (name, "tsv") == 0) |
1696 | { | |
1697 | int vnum; | |
1698 | const struct bt_definition *scope | |
1699 | = bt_ctf_get_top_level_scope (event, | |
1700 | BT_EVENT_FIELDS); | |
1701 | const struct bt_definition *def; | |
1702 | ||
1703 | def = bt_ctf_get_field (event, scope, "num"); | |
eed2386e | 1704 | vnum = (int) bt_ctf_get_uint64 (def); |
d0d292a2 | 1705 | info->tvars.push_back (vnum); |
28a93511 | 1706 | } |
393fd4c3 YQ |
1707 | else |
1708 | { | |
1709 | warning (_("Unhandled trace block type (%s) " | |
1710 | "while building trace frame info."), | |
1711 | name); | |
1712 | } | |
1713 | ||
1714 | if (bt_iter_next (bt_ctf_get_iter (ctf_iter)) < 0) | |
1715 | break; | |
1716 | } | |
1717 | while (name != NULL && strcmp (name, "frame") != 0); | |
1718 | ||
1719 | /* Restore the position. */ | |
1720 | bt_iter_set_pos (bt_ctf_get_iter (ctf_iter), pos); | |
1721 | ||
1722 | return info; | |
1723 | } | |
1724 | ||
393fd4c3 YQ |
1725 | #endif |
1726 | ||
393fd4c3 YQ |
1727 | /* module initialization */ |
1728 | ||
1729 | void | |
1730 | _initialize_ctf (void) | |
1731 | { | |
1732 | #if HAVE_LIBBABELTRACE | |
d9f719f1 | 1733 | add_target (ctf_target_info, ctf_target_open, filename_completer); |
393fd4c3 YQ |
1734 | #endif |
1735 | } |