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d0353e76 YQ |
1 | /* CTF format support. |
2 | ||
3 | Copyright (C) 2012-2013 Free Software Foundation, Inc. | |
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" | |
af307d6a | 26 | #include "gdb_stat.h" |
d0353e76 YQ |
27 | |
28 | #include <ctype.h> | |
29 | ||
30 | /* GDB saves trace buffers and other information (such as trace | |
31 | status) got from the remote target into Common Trace Format (CTF). | |
32 | The following types of information are expected to save in CTF: | |
33 | ||
34 | 1. The length (in bytes) of register cache. Event "register" will | |
35 | be defined in metadata, which includes the length. | |
36 | ||
37 | 2. Trace status. Not implemented yet in CTF writer. | |
38 | ||
39 | 3. Uploaded trace variables and tracepoints. Not implemented yet | |
40 | in CTF writer. | |
41 | ||
42 | 4. Trace frames. Each trace frame is composed by several blocks | |
43 | of different types ('R', 'M', 'V'). One trace frame is saved in | |
44 | one CTF packet and the blocks of this frame are saved as events. | |
45 | 4.1: The trace frame related information (such as the number of | |
46 | tracepoint associated with this frame) is saved in the packet | |
47 | context. | |
48 | 4.2: The block 'M', 'R' and 'V' are saved in event "memory", | |
49 | "register" and "tsv" respectively. | |
50 | 4.3: When iterating over events, babeltrace can't tell iterator | |
51 | goes to a new packet, so we need a marker or anchor to tell GDB | |
52 | that iterator goes into a new packet or frame. We define event | |
53 | "frame". */ | |
54 | ||
55 | #define CTF_MAGIC 0xC1FC1FC1 | |
56 | #define CTF_SAVE_MAJOR 1 | |
57 | #define CTF_SAVE_MINOR 8 | |
58 | ||
59 | #define CTF_METADATA_NAME "metadata" | |
60 | #define CTF_DATASTREAM_NAME "datastream" | |
61 | ||
62 | /* Reserved event id. */ | |
63 | ||
64 | #define CTF_EVENT_ID_REGISTER 0 | |
65 | #define CTF_EVENT_ID_TSV 1 | |
66 | #define CTF_EVENT_ID_MEMORY 2 | |
67 | #define CTF_EVENT_ID_FRAME 3 | |
68 | ||
69 | /* The state kept while writing the CTF datastream file. */ | |
70 | ||
71 | struct trace_write_handler | |
72 | { | |
73 | /* File descriptor of metadata. */ | |
74 | FILE *metadata_fd; | |
75 | /* File descriptor of traceframes. */ | |
76 | FILE *datastream_fd; | |
77 | ||
78 | /* This is the content size of the current packet. */ | |
79 | size_t content_size; | |
80 | ||
81 | /* This is the start offset of current packet. */ | |
82 | long packet_start; | |
83 | }; | |
84 | ||
85 | /* Write metadata in FORMAT. */ | |
86 | ||
87 | static void | |
88 | ctf_save_write_metadata (struct trace_write_handler *handler, | |
89 | const char *format, ...) | |
90 | { | |
91 | va_list args; | |
92 | ||
93 | va_start (args, format); | |
94 | if (vfprintf (handler->metadata_fd, format, args) < 0) | |
95 | error (_("Unable to write metadata file (%s)"), | |
96 | safe_strerror (errno)); | |
97 | va_end (args); | |
98 | } | |
99 | ||
100 | /* Write BUF of length SIZE to datastream file represented by | |
101 | HANDLER. */ | |
102 | ||
103 | static int | |
104 | ctf_save_write (struct trace_write_handler *handler, | |
105 | const gdb_byte *buf, size_t size) | |
106 | { | |
107 | if (fwrite (buf, size, 1, handler->datastream_fd) != 1) | |
108 | error (_("Unable to write file for saving trace data (%s)"), | |
109 | safe_strerror (errno)); | |
110 | ||
111 | handler->content_size += size; | |
112 | ||
113 | return 0; | |
114 | } | |
115 | ||
116 | /* Write a unsigned 32-bit integer to datastream file represented by | |
117 | HANDLER. */ | |
118 | ||
119 | #define ctf_save_write_uint32(HANDLER, U32) \ | |
120 | ctf_save_write (HANDLER, (gdb_byte *) &U32, 4) | |
121 | ||
122 | /* Set datastream file position. Update HANDLER->content_size | |
123 | if WHENCE is SEEK_CUR. */ | |
124 | ||
125 | static int | |
126 | ctf_save_fseek (struct trace_write_handler *handler, long offset, | |
127 | int whence) | |
128 | { | |
129 | gdb_assert (whence != SEEK_END); | |
130 | gdb_assert (whence != SEEK_SET | |
131 | || offset <= handler->content_size + handler->packet_start); | |
132 | ||
133 | if (fseek (handler->datastream_fd, offset, whence)) | |
134 | error (_("Unable to seek file for saving trace data (%s)"), | |
135 | safe_strerror (errno)); | |
136 | ||
137 | if (whence == SEEK_CUR) | |
138 | handler->content_size += offset; | |
139 | ||
140 | return 0; | |
141 | } | |
142 | ||
143 | /* Change the datastream file position to align on ALIGN_SIZE, | |
144 | and write BUF to datastream file. The size of BUF is SIZE. */ | |
145 | ||
146 | static int | |
147 | ctf_save_align_write (struct trace_write_handler *handler, | |
148 | const gdb_byte *buf, | |
149 | size_t size, size_t align_size) | |
150 | { | |
151 | long offset | |
152 | = (align_up (handler->content_size, align_size) | |
153 | - handler->content_size); | |
154 | ||
155 | if (ctf_save_fseek (handler, offset, SEEK_CUR)) | |
156 | return -1; | |
157 | ||
158 | if (ctf_save_write (handler, buf, size)) | |
159 | return -1; | |
160 | ||
161 | return 0; | |
162 | } | |
163 | ||
164 | /* Write events to next new packet. */ | |
165 | ||
166 | static void | |
167 | ctf_save_next_packet (struct trace_write_handler *handler) | |
168 | { | |
169 | handler->packet_start += (handler->content_size + 4); | |
170 | ctf_save_fseek (handler, handler->packet_start, SEEK_SET); | |
171 | handler->content_size = 0; | |
172 | } | |
173 | ||
174 | /* Write the CTF metadata header. */ | |
175 | ||
176 | static void | |
177 | ctf_save_metadata_header (struct trace_write_handler *handler) | |
178 | { | |
179 | const char metadata_fmt[] = | |
180 | "\ntrace {\n" | |
181 | " major = %u;\n" | |
182 | " minor = %u;\n" | |
183 | " byte_order = %s;\n" /* be or le */ | |
184 | " packet.header := struct {\n" | |
185 | " uint32_t magic;\n" | |
186 | " };\n" | |
187 | "};\n" | |
188 | "\n" | |
189 | "stream {\n" | |
190 | " packet.context := struct {\n" | |
191 | " uint32_t content_size;\n" | |
192 | " uint32_t packet_size;\n" | |
193 | " uint16_t tpnum;\n" | |
194 | " };\n" | |
195 | " event.header := struct {\n" | |
196 | " uint32_t id;\n" | |
197 | " };\n" | |
198 | "};\n"; | |
199 | ||
200 | ctf_save_write_metadata (handler, "/* CTF %d.%d */\n", | |
201 | CTF_SAVE_MAJOR, CTF_SAVE_MINOR); | |
202 | ctf_save_write_metadata (handler, | |
203 | "typealias integer { size = 8; align = 8; " | |
204 | "signed = false; encoding = ascii;}" | |
205 | " := ascii;\n"); | |
206 | ctf_save_write_metadata (handler, | |
207 | "typealias integer { size = 8; align = 8; " | |
208 | "signed = false; }" | |
209 | " := uint8_t;\n"); | |
210 | ctf_save_write_metadata (handler, | |
211 | "typealias integer { size = 16; align = 16;" | |
212 | "signed = false; } := uint16_t;\n"); | |
213 | ctf_save_write_metadata (handler, | |
214 | "typealias integer { size = 32; align = 32;" | |
215 | "signed = false; } := uint32_t;\n"); | |
216 | ctf_save_write_metadata (handler, | |
217 | "typealias integer { size = 64; align = 64;" | |
218 | "signed = false; base = hex;}" | |
219 | " := uint64_t;\n"); | |
220 | ctf_save_write_metadata (handler, "\n"); | |
221 | ||
8249a5a9 YQ |
222 | /* Get the byte order of the host and write CTF data in this byte |
223 | order. */ | |
224 | #if WORDS_BIGENDIAN | |
225 | #define HOST_ENDIANNESS "be" | |
226 | #else | |
227 | #define HOST_ENDIANNESS "le" | |
228 | #endif | |
229 | ||
d0353e76 YQ |
230 | ctf_save_write_metadata (handler, metadata_fmt, |
231 | CTF_SAVE_MAJOR, CTF_SAVE_MINOR, | |
8249a5a9 | 232 | HOST_ENDIANNESS); |
d0353e76 YQ |
233 | ctf_save_write_metadata (handler, "\n"); |
234 | } | |
235 | ||
236 | /* CTF trace writer. */ | |
237 | ||
238 | struct ctf_trace_file_writer | |
239 | { | |
240 | struct trace_file_writer base; | |
241 | ||
242 | /* States related to writing CTF trace file. */ | |
243 | struct trace_write_handler tcs; | |
244 | }; | |
245 | ||
246 | /* This is the implementation of trace_file_write_ops method | |
247 | dtor. */ | |
248 | ||
249 | static void | |
250 | ctf_dtor (struct trace_file_writer *self) | |
251 | { | |
252 | struct ctf_trace_file_writer *writer | |
253 | = (struct ctf_trace_file_writer *) self; | |
254 | ||
255 | if (writer->tcs.metadata_fd != NULL) | |
256 | fclose (writer->tcs.metadata_fd); | |
257 | ||
258 | if (writer->tcs.datastream_fd != NULL) | |
259 | fclose (writer->tcs.datastream_fd); | |
260 | ||
261 | } | |
262 | ||
263 | /* This is the implementation of trace_file_write_ops method | |
264 | target_save. */ | |
265 | ||
266 | static int | |
267 | ctf_target_save (struct trace_file_writer *self, | |
268 | const char *dirname) | |
269 | { | |
270 | /* Don't support save trace file to CTF format in the target. */ | |
271 | return 0; | |
272 | } | |
273 | ||
af307d6a | 274 | #ifdef USE_WIN32API |
a4341769 YQ |
275 | #undef mkdir |
276 | #define mkdir(pathname, mode) mkdir (pathname) | |
af307d6a YQ |
277 | #endif |
278 | ||
d0353e76 YQ |
279 | /* This is the implementation of trace_file_write_ops method |
280 | start. It creates the directory DIRNAME, metadata and datastream | |
281 | in the directory. */ | |
282 | ||
283 | static void | |
284 | ctf_start (struct trace_file_writer *self, const char *dirname) | |
285 | { | |
286 | char *file_name; | |
287 | struct cleanup *old_chain; | |
288 | struct ctf_trace_file_writer *writer | |
289 | = (struct ctf_trace_file_writer *) self; | |
290 | int i; | |
af307d6a YQ |
291 | mode_t hmode = S_IRUSR | S_IWUSR | S_IXUSR |
292 | #ifdef S_IRGRP | |
293 | | S_IRGRP | |
294 | #endif | |
295 | #ifdef S_IXGRP | |
296 | | S_IXGRP | |
297 | #endif | |
298 | | S_IROTH /* Defined in common/gdb_stat.h if not defined. */ | |
299 | #ifdef S_IXOTH | |
300 | | S_IXOTH | |
301 | #endif | |
302 | ; | |
d0353e76 YQ |
303 | |
304 | /* Create DIRNAME. */ | |
af307d6a | 305 | if (mkdir (dirname, hmode) && errno != EEXIST) |
d0353e76 YQ |
306 | error (_("Unable to open directory '%s' for saving trace data (%s)"), |
307 | dirname, safe_strerror (errno)); | |
308 | ||
309 | memset (&writer->tcs, '\0', sizeof (writer->tcs)); | |
310 | ||
311 | file_name = xstrprintf ("%s/%s", dirname, CTF_METADATA_NAME); | |
312 | old_chain = make_cleanup (xfree, file_name); | |
313 | ||
314 | writer->tcs.metadata_fd = fopen (file_name, "w"); | |
315 | if (writer->tcs.metadata_fd == NULL) | |
316 | error (_("Unable to open file '%s' for saving trace data (%s)"), | |
317 | file_name, safe_strerror (errno)); | |
318 | do_cleanups (old_chain); | |
319 | ||
320 | ctf_save_metadata_header (&writer->tcs); | |
321 | ||
322 | file_name = xstrprintf ("%s/%s", dirname, CTF_DATASTREAM_NAME); | |
323 | old_chain = make_cleanup (xfree, file_name); | |
324 | writer->tcs.datastream_fd = fopen (file_name, "w"); | |
325 | if (writer->tcs.datastream_fd == NULL) | |
326 | error (_("Unable to open file '%s' for saving trace data (%s)"), | |
327 | file_name, safe_strerror (errno)); | |
328 | do_cleanups (old_chain); | |
329 | } | |
330 | ||
331 | /* This is the implementation of trace_file_write_ops method | |
332 | write_header. Write the types of events on trace variable and | |
333 | frame. */ | |
334 | ||
335 | static void | |
336 | ctf_write_header (struct trace_file_writer *self) | |
337 | { | |
338 | struct ctf_trace_file_writer *writer | |
339 | = (struct ctf_trace_file_writer *) self; | |
340 | ||
341 | ||
342 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
343 | ctf_save_write_metadata (&writer->tcs, | |
344 | "event {\n\tname = \"memory\";\n\tid = %u;\n" | |
345 | "\tfields := struct { \n" | |
346 | "\t\tuint64_t address;\n" | |
347 | "\t\tuint16_t length;\n" | |
348 | "\t\tuint8_t contents[length];\n" | |
349 | "\t};\n" | |
350 | "};\n", CTF_EVENT_ID_MEMORY); | |
351 | ||
352 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
353 | ctf_save_write_metadata (&writer->tcs, | |
354 | "event {\n\tname = \"tsv\";\n\tid = %u;\n" | |
355 | "\tfields := struct { \n" | |
356 | "\t\tuint64_t val;\n" | |
357 | "\t\tuint32_t num;\n" | |
358 | "\t};\n" | |
359 | "};\n", CTF_EVENT_ID_TSV); | |
360 | ||
361 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
362 | ctf_save_write_metadata (&writer->tcs, | |
363 | "event {\n\tname = \"frame\";\n\tid = %u;\n" | |
364 | "\tfields := struct { \n" | |
365 | "\t};\n" | |
366 | "};\n", CTF_EVENT_ID_FRAME); | |
367 | ||
368 | gdb_assert (writer->tcs.content_size == 0); | |
369 | gdb_assert (writer->tcs.packet_start == 0); | |
370 | } | |
371 | ||
372 | /* This is the implementation of trace_file_write_ops method | |
373 | write_regblock_type. Write the type of register event in | |
374 | metadata. */ | |
375 | ||
376 | static void | |
377 | ctf_write_regblock_type (struct trace_file_writer *self, int size) | |
378 | { | |
379 | struct ctf_trace_file_writer *writer | |
380 | = (struct ctf_trace_file_writer *) self; | |
381 | ||
382 | ctf_save_write_metadata (&writer->tcs, "\n"); | |
383 | ||
384 | ctf_save_write_metadata (&writer->tcs, | |
385 | "event {\n\tname = \"register\";\n\tid = %u;\n" | |
386 | "\tfields := struct { \n" | |
387 | "\t\tascii contents[%d];\n" | |
388 | "\t};\n" | |
389 | "};\n", | |
390 | CTF_EVENT_ID_REGISTER, size); | |
391 | } | |
392 | ||
393 | /* This is the implementation of trace_file_write_ops method | |
394 | write_status. */ | |
395 | ||
396 | static void | |
397 | ctf_write_status (struct trace_file_writer *self, | |
398 | struct trace_status *ts) | |
399 | { | |
400 | /* It is not supported yet to write trace status into CTF trace | |
401 | data. */ | |
402 | } | |
403 | ||
404 | /* This is the implementation of trace_file_write_ops method | |
405 | write_uploaded_tsv. */ | |
406 | ||
407 | static void | |
408 | ctf_write_uploaded_tsv (struct trace_file_writer *self, | |
409 | struct uploaded_tsv *tsv) | |
410 | { | |
411 | /* It is not supported yet to write uploaded trace variables | |
412 | into CTF trace data. */ | |
413 | } | |
414 | ||
415 | /* This is the implementation of trace_file_write_ops method | |
416 | write_uploaded_tp. */ | |
417 | ||
418 | static void | |
419 | ctf_write_uploaded_tp (struct trace_file_writer *self, | |
420 | struct uploaded_tp *tp) | |
421 | { | |
422 | /* It is not supported yet to write uploaded tracepoints | |
423 | into CTF trace data. */ | |
424 | } | |
425 | ||
426 | /* This is the implementation of trace_file_write_ops method | |
427 | write_definition_end. */ | |
428 | ||
429 | static void | |
430 | ctf_write_definition_end (struct trace_file_writer *self) | |
431 | { | |
432 | /* Nothing to do for CTF. */ | |
433 | } | |
434 | ||
435 | /* The minimal file size of data stream. It is required by | |
436 | babeltrace. */ | |
437 | ||
438 | #define CTF_FILE_MIN_SIZE 4096 | |
439 | ||
440 | /* This is the implementation of trace_file_write_ops method | |
441 | end. */ | |
442 | ||
443 | static void | |
444 | ctf_end (struct trace_file_writer *self) | |
445 | { | |
446 | struct ctf_trace_file_writer *writer = (struct ctf_trace_file_writer *) self; | |
447 | ||
448 | gdb_assert (writer->tcs.content_size == 0); | |
449 | /* The babeltrace requires or assumes that the size of datastream | |
450 | file is greater than 4096 bytes. If we don't generate enough | |
451 | packets and events, create a fake packet which has zero event, | |
452 | to use up the space. */ | |
453 | if (writer->tcs.packet_start < CTF_FILE_MIN_SIZE) | |
454 | { | |
455 | uint32_t u32; | |
456 | ||
457 | /* magic. */ | |
458 | u32 = CTF_MAGIC; | |
459 | ctf_save_write_uint32 (&writer->tcs, u32); | |
460 | ||
461 | /* content_size. */ | |
462 | u32 = 0; | |
463 | ctf_save_write_uint32 (&writer->tcs, u32); | |
464 | ||
465 | /* packet_size. */ | |
466 | u32 = 12; | |
467 | if (writer->tcs.packet_start + u32 < CTF_FILE_MIN_SIZE) | |
468 | u32 = CTF_FILE_MIN_SIZE - writer->tcs.packet_start; | |
469 | ||
470 | u32 *= TARGET_CHAR_BIT; | |
471 | ctf_save_write_uint32 (&writer->tcs, u32); | |
472 | ||
473 | /* tpnum. */ | |
474 | u32 = 0; | |
475 | ctf_save_write (&writer->tcs, (gdb_byte *) &u32, 2); | |
476 | ||
477 | /* Enlarge the file to CTF_FILE_MIN_SIZE is it is still less | |
478 | than that. */ | |
479 | if (CTF_FILE_MIN_SIZE | |
480 | > (writer->tcs.packet_start + writer->tcs.content_size)) | |
481 | { | |
482 | gdb_byte b = 0; | |
483 | ||
484 | /* Fake the content size to avoid assertion failure in | |
485 | ctf_save_fseek. */ | |
486 | writer->tcs.content_size = (CTF_FILE_MIN_SIZE | |
487 | - 1 - writer->tcs.packet_start); | |
488 | ctf_save_fseek (&writer->tcs, CTF_FILE_MIN_SIZE - 1, | |
489 | SEEK_SET); | |
490 | ctf_save_write (&writer->tcs, &b, 1); | |
491 | } | |
492 | } | |
493 | } | |
494 | ||
495 | /* This is the implementation of trace_frame_write_ops method | |
496 | start. */ | |
497 | ||
498 | static void | |
499 | ctf_write_frame_start (struct trace_file_writer *self, uint16_t tpnum) | |
500 | { | |
501 | struct ctf_trace_file_writer *writer | |
502 | = (struct ctf_trace_file_writer *) self; | |
503 | uint32_t id = CTF_EVENT_ID_FRAME; | |
504 | uint32_t u32; | |
505 | ||
506 | /* Step 1: Write packet context. */ | |
507 | /* magic. */ | |
508 | u32 = CTF_MAGIC; | |
509 | ctf_save_write_uint32 (&writer->tcs, u32); | |
510 | /* content_size and packet_size.. We still don't know the value, | |
511 | write it later. */ | |
512 | ctf_save_fseek (&writer->tcs, 4, SEEK_CUR); | |
513 | ctf_save_fseek (&writer->tcs, 4, SEEK_CUR); | |
514 | /* Tracepoint number. */ | |
515 | ctf_save_write (&writer->tcs, (gdb_byte *) &tpnum, 2); | |
516 | ||
517 | /* Step 2: Write event "frame". */ | |
518 | /* Event Id. */ | |
519 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
520 | } | |
521 | ||
522 | /* This is the implementation of trace_frame_write_ops method | |
523 | write_r_block. */ | |
524 | ||
525 | static void | |
526 | ctf_write_frame_r_block (struct trace_file_writer *self, | |
527 | gdb_byte *buf, int32_t size) | |
528 | { | |
529 | struct ctf_trace_file_writer *writer | |
530 | = (struct ctf_trace_file_writer *) self; | |
531 | uint32_t id = CTF_EVENT_ID_REGISTER; | |
532 | ||
533 | /* Event Id. */ | |
534 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
535 | ||
536 | /* array contents. */ | |
537 | ctf_save_align_write (&writer->tcs, buf, size, 1); | |
538 | } | |
539 | ||
540 | /* This is the implementation of trace_frame_write_ops method | |
541 | write_m_block_header. */ | |
542 | ||
543 | static void | |
544 | ctf_write_frame_m_block_header (struct trace_file_writer *self, | |
545 | uint64_t addr, uint16_t length) | |
546 | { | |
547 | struct ctf_trace_file_writer *writer | |
548 | = (struct ctf_trace_file_writer *) self; | |
549 | uint32_t event_id = CTF_EVENT_ID_MEMORY; | |
550 | ||
551 | /* Event Id. */ | |
552 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &event_id, 4, 4); | |
553 | ||
554 | /* Address. */ | |
555 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &addr, 8, 8); | |
556 | ||
557 | /* Length. */ | |
558 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &length, 2, 2); | |
559 | } | |
560 | ||
561 | /* This is the implementation of trace_frame_write_ops method | |
562 | write_m_block_memory. */ | |
563 | ||
564 | static void | |
565 | ctf_write_frame_m_block_memory (struct trace_file_writer *self, | |
566 | gdb_byte *buf, uint16_t length) | |
567 | { | |
568 | struct ctf_trace_file_writer *writer | |
569 | = (struct ctf_trace_file_writer *) self; | |
570 | ||
571 | /* Contents. */ | |
572 | ctf_save_align_write (&writer->tcs, (gdb_byte *) buf, length, 1); | |
573 | } | |
574 | ||
575 | /* This is the implementation of trace_frame_write_ops method | |
576 | write_v_block. */ | |
577 | ||
578 | static void | |
579 | ctf_write_frame_v_block (struct trace_file_writer *self, | |
580 | int32_t num, uint64_t val) | |
581 | { | |
582 | struct ctf_trace_file_writer *writer | |
583 | = (struct ctf_trace_file_writer *) self; | |
584 | uint32_t id = CTF_EVENT_ID_TSV; | |
585 | ||
586 | /* Event Id. */ | |
587 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &id, 4, 4); | |
588 | ||
589 | /* val. */ | |
590 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &val, 8, 8); | |
591 | /* num. */ | |
592 | ctf_save_align_write (&writer->tcs, (gdb_byte *) &num, 4, 4); | |
593 | } | |
594 | ||
595 | /* This is the implementation of trace_frame_write_ops method | |
596 | end. */ | |
597 | ||
598 | static void | |
599 | ctf_write_frame_end (struct trace_file_writer *self) | |
600 | { | |
601 | struct ctf_trace_file_writer *writer | |
602 | = (struct ctf_trace_file_writer *) self; | |
603 | uint32_t u32; | |
604 | uint32_t t; | |
605 | ||
606 | /* Write the content size to packet header. */ | |
607 | ctf_save_fseek (&writer->tcs, writer->tcs.packet_start + 4, | |
608 | SEEK_SET); | |
609 | u32 = writer->tcs.content_size * TARGET_CHAR_BIT; | |
610 | ||
611 | t = writer->tcs.content_size; | |
612 | ctf_save_write_uint32 (&writer->tcs, u32); | |
613 | ||
614 | /* Write the packet size. */ | |
615 | u32 += 4 * TARGET_CHAR_BIT; | |
616 | ctf_save_write_uint32 (&writer->tcs, u32); | |
617 | ||
618 | writer->tcs.content_size = t; | |
619 | ||
620 | /* Write zero at the end of the packet. */ | |
621 | ctf_save_fseek (&writer->tcs, writer->tcs.packet_start + t, | |
622 | SEEK_SET); | |
623 | u32 = 0; | |
624 | ctf_save_write_uint32 (&writer->tcs, u32); | |
625 | writer->tcs.content_size = t; | |
626 | ||
627 | ctf_save_next_packet (&writer->tcs); | |
628 | } | |
629 | ||
630 | /* Operations to write various types of trace frames into CTF | |
631 | format. */ | |
632 | ||
633 | static const struct trace_frame_write_ops ctf_write_frame_ops = | |
634 | { | |
635 | ctf_write_frame_start, | |
636 | ctf_write_frame_r_block, | |
637 | ctf_write_frame_m_block_header, | |
638 | ctf_write_frame_m_block_memory, | |
639 | ctf_write_frame_v_block, | |
640 | ctf_write_frame_end, | |
641 | }; | |
642 | ||
643 | /* Operations to write trace buffers into CTF format. */ | |
644 | ||
645 | static const struct trace_file_write_ops ctf_write_ops = | |
646 | { | |
647 | ctf_dtor, | |
648 | ctf_target_save, | |
649 | ctf_start, | |
650 | ctf_write_header, | |
651 | ctf_write_regblock_type, | |
652 | ctf_write_status, | |
653 | ctf_write_uploaded_tsv, | |
654 | ctf_write_uploaded_tp, | |
655 | ctf_write_definition_end, | |
656 | NULL, | |
657 | &ctf_write_frame_ops, | |
658 | ctf_end, | |
659 | }; | |
660 | ||
661 | /* Return a trace writer for CTF format. */ | |
662 | ||
663 | struct trace_file_writer * | |
664 | ctf_trace_file_writer_new (void) | |
665 | { | |
666 | struct ctf_trace_file_writer *writer | |
667 | = xmalloc (sizeof (struct ctf_trace_file_writer)); | |
668 | ||
669 | writer->base.ops = &ctf_write_ops; | |
670 | ||
671 | return (struct trace_file_writer *) writer; | |
672 | } |