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fix a kmap leak in virtio_console
[linux/fpc-iii.git] / tools / perf / ui / browsers / annotate.c
blobf0697a3aede04cb19f91d459cab62a6c08c5326f
1 #include "../../util/util.h"
2 #include "../browser.h"
3 #include "../helpline.h"
4 #include "../libslang.h"
5 #include "../ui.h"
6 #include "../util.h"
7 #include "../../util/annotate.h"
8 #include "../../util/hist.h"
9 #include "../../util/sort.h"
10 #include "../../util/symbol.h"
11 #include "../../util/evsel.h"
12 #include <pthread.h>
13
14 struct browser_disasm_line {
15 struct rb_node rb_node;
16 u32 idx;
17 int idx_asm;
18 int jump_sources;
19 /*
20 * actual length of this array is saved on the nr_events field
21 * of the struct annotate_browser
22 */
23 double percent[1];
24 };
25
26 static struct annotate_browser_opt {
27 bool hide_src_code,
28 use_offset,
29 jump_arrows,
30 show_nr_jumps;
31 } annotate_browser__opts = {
32 .use_offset = true,
33 .jump_arrows = true,
34 };
35
36 struct annotate_browser {
37 struct ui_browser b;
38 struct rb_root entries;
39 struct rb_node *curr_hot;
40 struct disasm_line *selection;
41 struct disasm_line **offsets;
42 int nr_events;
43 u64 start;
44 int nr_asm_entries;
45 int nr_entries;
46 int max_jump_sources;
47 int nr_jumps;
48 bool searching_backwards;
49 u8 addr_width;
50 u8 jumps_width;
51 u8 target_width;
52 u8 min_addr_width;
53 u8 max_addr_width;
54 char search_bf[128];
55 };
56
57 static inline struct browser_disasm_line *disasm_line__browser(struct disasm_line *dl)
58 {
59 return (struct browser_disasm_line *)(dl + 1);
60 }
61
62 static bool disasm_line__filter(struct ui_browser *browser __maybe_unused,
63 void *entry)
64 {
65 if (annotate_browser__opts.hide_src_code) {
66 struct disasm_line *dl = list_entry(entry, struct disasm_line, node);
67 return dl->offset == -1;
68 }
69
70 return false;
71 }
72
73 static int annotate_browser__jumps_percent_color(struct annotate_browser *browser,
74 int nr, bool current)
75 {
76 if (current && (!browser->b.use_navkeypressed || browser->b.navkeypressed))
77 return HE_COLORSET_SELECTED;
78 if (nr == browser->max_jump_sources)
79 return HE_COLORSET_TOP;
80 if (nr > 1)
81 return HE_COLORSET_MEDIUM;
82 return HE_COLORSET_NORMAL;
83 }
84
85 static int annotate_browser__set_jumps_percent_color(struct annotate_browser *browser,
86 int nr, bool current)
87 {
88 int color = annotate_browser__jumps_percent_color(browser, nr, current);
89 return ui_browser__set_color(&browser->b, color);
90 }
91
92 static void annotate_browser__write(struct ui_browser *browser, void *entry, int row)
93 {
94 struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
95 struct disasm_line *dl = list_entry(entry, struct disasm_line, node);
96 struct browser_disasm_line *bdl = disasm_line__browser(dl);
97 bool current_entry = ui_browser__is_current_entry(browser, row);
98 bool change_color = (!annotate_browser__opts.hide_src_code &&
99 (!current_entry || (browser->use_navkeypressed &&
100 !browser->navkeypressed)));
101 int width = browser->width, printed;
102 int i, pcnt_width = 7 * ab->nr_events;
103 double percent_max = 0.0;
104 char bf[256];
105
106 for (i = 0; i < ab->nr_events; i++) {
107 if (bdl->percent[i] > percent_max)
108 percent_max = bdl->percent[i];
109 }
110
111 if (dl->offset != -1 && percent_max != 0.0) {
112 for (i = 0; i < ab->nr_events; i++) {
113 ui_browser__set_percent_color(browser, bdl->percent[i],
114 current_entry);
115 slsmg_printf("%6.2f ", bdl->percent[i]);
116 }
117 } else {
118 ui_browser__set_percent_color(browser, 0, current_entry);
119 slsmg_write_nstring(" ", pcnt_width);
120 }
121
122 SLsmg_write_char(' ');
123
124 /* The scroll bar isn't being used */
125 if (!browser->navkeypressed)
126 width += 1;
127
128 if (!*dl->line)
129 slsmg_write_nstring(" ", width - pcnt_width);
130 else if (dl->offset == -1) {
131 printed = scnprintf(bf, sizeof(bf), "%*s ",
132 ab->addr_width, " ");
133 slsmg_write_nstring(bf, printed);
134 slsmg_write_nstring(dl->line, width - printed - pcnt_width + 1);
135 } else {
136 u64 addr = dl->offset;
137 int color = -1;
138
139 if (!annotate_browser__opts.use_offset)
140 addr += ab->start;
141
142 if (!annotate_browser__opts.use_offset) {
143 printed = scnprintf(bf, sizeof(bf), "%" PRIx64 ": ", addr);
144 } else {
145 if (bdl->jump_sources) {
146 if (annotate_browser__opts.show_nr_jumps) {
147 int prev;
148 printed = scnprintf(bf, sizeof(bf), "%*d ",
149 ab->jumps_width,
150 bdl->jump_sources);
151 prev = annotate_browser__set_jumps_percent_color(ab, bdl->jump_sources,
152 current_entry);
153 slsmg_write_nstring(bf, printed);
154 ui_browser__set_color(browser, prev);
155 }
156
157 printed = scnprintf(bf, sizeof(bf), "%*" PRIx64 ": ",
158 ab->target_width, addr);
159 } else {
160 printed = scnprintf(bf, sizeof(bf), "%*s ",
161 ab->addr_width, " ");
162 }
163 }
164
165 if (change_color)
166 color = ui_browser__set_color(browser, HE_COLORSET_ADDR);
167 slsmg_write_nstring(bf, printed);
168 if (change_color)
169 ui_browser__set_color(browser, color);
170 if (dl->ins && dl->ins->ops->scnprintf) {
171 if (ins__is_jump(dl->ins)) {
172 bool fwd = dl->ops.target.offset > (u64)dl->offset;
173
174 ui_browser__write_graph(browser, fwd ? SLSMG_DARROW_CHAR :
175 SLSMG_UARROW_CHAR);
176 SLsmg_write_char(' ');
177 } else if (ins__is_call(dl->ins)) {
178 ui_browser__write_graph(browser, SLSMG_RARROW_CHAR);
179 SLsmg_write_char(' ');
180 } else {
181 slsmg_write_nstring(" ", 2);
182 }
183 } else {
184 if (strcmp(dl->name, "retq")) {
185 slsmg_write_nstring(" ", 2);
186 } else {
187 ui_browser__write_graph(browser, SLSMG_LARROW_CHAR);
188 SLsmg_write_char(' ');
189 }
190 }
191
192 disasm_line__scnprintf(dl, bf, sizeof(bf), !annotate_browser__opts.use_offset);
193 slsmg_write_nstring(bf, width - pcnt_width - 3 - printed);
194 }
195
196 if (current_entry)
197 ab->selection = dl;
198 }
199
200 static bool disasm_line__is_valid_jump(struct disasm_line *dl, struct symbol *sym)
201 {
202 if (!dl || !dl->ins || !ins__is_jump(dl->ins)
203 || !disasm_line__has_offset(dl)
204 || dl->ops.target.offset >= symbol__size(sym))
205 return false;
206
207 return true;
208 }
209
210 static void annotate_browser__draw_current_jump(struct ui_browser *browser)
211 {
212 struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
213 struct disasm_line *cursor = ab->selection, *target;
214 struct browser_disasm_line *btarget, *bcursor;
215 unsigned int from, to;
216 struct map_symbol *ms = ab->b.priv;
217 struct symbol *sym = ms->sym;
218 u8 pcnt_width = 7;
219
220 /* PLT symbols contain external offsets */
221 if (strstr(sym->name, "@plt"))
222 return;
223
224 if (!disasm_line__is_valid_jump(cursor, sym))
225 return;
226
227 target = ab->offsets[cursor->ops.target.offset];
228 if (!target)
229 return;
230
231 bcursor = disasm_line__browser(cursor);
232 btarget = disasm_line__browser(target);
233
234 if (annotate_browser__opts.hide_src_code) {
235 from = bcursor->idx_asm;
236 to = btarget->idx_asm;
237 } else {
238 from = (u64)bcursor->idx;
239 to = (u64)btarget->idx;
240 }
241
242 pcnt_width *= ab->nr_events;
243
244 ui_browser__set_color(browser, HE_COLORSET_CODE);
245 __ui_browser__line_arrow(browser, pcnt_width + 2 + ab->addr_width,
246 from, to);
247 }
248
249 static unsigned int annotate_browser__refresh(struct ui_browser *browser)
250 {
251 struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
252 int ret = ui_browser__list_head_refresh(browser);
253 int pcnt_width;
254
255 pcnt_width = 7 * ab->nr_events;
256
257 if (annotate_browser__opts.jump_arrows)
258 annotate_browser__draw_current_jump(browser);
259
260 ui_browser__set_color(browser, HE_COLORSET_NORMAL);
261 __ui_browser__vline(browser, pcnt_width, 0, browser->height - 1);
262 return ret;
263 }
264
265 static int disasm__cmp(struct browser_disasm_line *a,
266 struct browser_disasm_line *b, int nr_pcnt)
267 {
268 int i;
269
270 for (i = 0; i < nr_pcnt; i++) {
271 if (a->percent[i] == b->percent[i])
272 continue;
273 return a->percent[i] < b->percent[i];
274 }
275 return 0;
276 }
277
278 static void disasm_rb_tree__insert(struct rb_root *root, struct browser_disasm_line *bdl,
279 int nr_events)
280 {
281 struct rb_node **p = &root->rb_node;
282 struct rb_node *parent = NULL;
283 struct browser_disasm_line *l;
284
285 while (*p != NULL) {
286 parent = *p;
287 l = rb_entry(parent, struct browser_disasm_line, rb_node);
288
289 if (disasm__cmp(bdl, l, nr_events))
290 p = &(*p)->rb_left;
291 else
292 p = &(*p)->rb_right;
293 }
294 rb_link_node(&bdl->rb_node, parent, p);
295 rb_insert_color(&bdl->rb_node, root);
296 }
297
298 static void annotate_browser__set_top(struct annotate_browser *browser,
299 struct disasm_line *pos, u32 idx)
300 {
301 unsigned back;
302
303 ui_browser__refresh_dimensions(&browser->b);
304 back = browser->b.height / 2;
305 browser->b.top_idx = browser->b.index = idx;
306
307 while (browser->b.top_idx != 0 && back != 0) {
308 pos = list_entry(pos->node.prev, struct disasm_line, node);
309
310 if (disasm_line__filter(&browser->b, &pos->node))
311 continue;
312
313 --browser->b.top_idx;
314 --back;
315 }
316
317 browser->b.top = pos;
318 browser->b.navkeypressed = true;
319 }
320
321 static void annotate_browser__set_rb_top(struct annotate_browser *browser,
322 struct rb_node *nd)
323 {
324 struct browser_disasm_line *bpos;
325 struct disasm_line *pos;
326 u32 idx;
327
328 bpos = rb_entry(nd, struct browser_disasm_line, rb_node);
329 pos = ((struct disasm_line *)bpos) - 1;
330 idx = bpos->idx;
331 if (annotate_browser__opts.hide_src_code)
332 idx = bpos->idx_asm;
333 annotate_browser__set_top(browser, pos, idx);
334 browser->curr_hot = nd;
335 }
336
337 static void annotate_browser__calc_percent(struct annotate_browser *browser,
338 struct perf_evsel *evsel)
339 {
340 struct map_symbol *ms = browser->b.priv;
341 struct symbol *sym = ms->sym;
342 struct annotation *notes = symbol__annotation(sym);
343 struct disasm_line *pos, *next;
344 s64 len = symbol__size(sym);
345
346 browser->entries = RB_ROOT;
347
348 pthread_mutex_lock(&notes->lock);
349
350 list_for_each_entry(pos, &notes->src->source, node) {
351 struct browser_disasm_line *bpos = disasm_line__browser(pos);
352 const char *path = NULL;
353 double max_percent = 0.0;
354 int i;
355
356 if (pos->offset == -1) {
357 RB_CLEAR_NODE(&bpos->rb_node);
358 continue;
359 }
360
361 next = disasm__get_next_ip_line(&notes->src->source, pos);
362
363 for (i = 0; i < browser->nr_events; i++) {
364 bpos->percent[i] = disasm__calc_percent(notes,
365 evsel->idx + i,
366 pos->offset,
367 next ? next->offset : len,
368 &path);
369
370 if (max_percent < bpos->percent[i])
371 max_percent = bpos->percent[i];
372 }
373
374 if (max_percent < 0.01) {
375 RB_CLEAR_NODE(&bpos->rb_node);
376 continue;
377 }
378 disasm_rb_tree__insert(&browser->entries, bpos,
379 browser->nr_events);
380 }
381 pthread_mutex_unlock(&notes->lock);
382
383 browser->curr_hot = rb_last(&browser->entries);
384 }
385
386 static bool annotate_browser__toggle_source(struct annotate_browser *browser)
387 {
388 struct disasm_line *dl;
389 struct browser_disasm_line *bdl;
390 off_t offset = browser->b.index - browser->b.top_idx;
391
392 browser->b.seek(&browser->b, offset, SEEK_CUR);
393 dl = list_entry(browser->b.top, struct disasm_line, node);
394 bdl = disasm_line__browser(dl);
395
396 if (annotate_browser__opts.hide_src_code) {
397 if (bdl->idx_asm < offset)
398 offset = bdl->idx;
399
400 browser->b.nr_entries = browser->nr_entries;
401 annotate_browser__opts.hide_src_code = false;
402 browser->b.seek(&browser->b, -offset, SEEK_CUR);
403 browser->b.top_idx = bdl->idx - offset;
404 browser->b.index = bdl->idx;
405 } else {
406 if (bdl->idx_asm < 0) {
407 ui_helpline__puts("Only available for assembly lines.");
408 browser->b.seek(&browser->b, -offset, SEEK_CUR);
409 return false;
410 }
411
412 if (bdl->idx_asm < offset)
413 offset = bdl->idx_asm;
414
415 browser->b.nr_entries = browser->nr_asm_entries;
416 annotate_browser__opts.hide_src_code = true;
417 browser->b.seek(&browser->b, -offset, SEEK_CUR);
418 browser->b.top_idx = bdl->idx_asm - offset;
419 browser->b.index = bdl->idx_asm;
420 }
421
422 return true;
423 }
424
425 static void annotate_browser__init_asm_mode(struct annotate_browser *browser)
426 {
427 ui_browser__reset_index(&browser->b);
428 browser->b.nr_entries = browser->nr_asm_entries;
429 }
430
431 #define SYM_TITLE_MAX_SIZE (PATH_MAX + 64)
432
433 static int sym_title(struct symbol *sym, struct map *map, char *title,
434 size_t sz)
435 {
436 return snprintf(title, sz, "%s %s", sym->name, map->dso->long_name);
437 }
438
439 static bool annotate_browser__callq(struct annotate_browser *browser,
440 struct perf_evsel *evsel,
441 struct hist_browser_timer *hbt)
442 {
443 struct map_symbol *ms = browser->b.priv;
444 struct disasm_line *dl = browser->selection;
445 struct annotation *notes;
446 struct addr_map_symbol target = {
447 .map = ms->map,
448 .addr = map__objdump_2mem(ms->map, dl->ops.target.addr),
449 };
450 char title[SYM_TITLE_MAX_SIZE];
451
452 if (!ins__is_call(dl->ins))
453 return false;
454
455 if (map_groups__find_ams(&target, NULL) ||
456 map__rip_2objdump(target.map, target.map->map_ip(target.map,
457 target.addr)) !=
458 dl->ops.target.addr) {
459 ui_helpline__puts("The called function was not found.");
460 return true;
461 }
462
463 notes = symbol__annotation(target.sym);
464 pthread_mutex_lock(&notes->lock);
465
466 if (notes->src == NULL && symbol__alloc_hist(target.sym) < 0) {
467 pthread_mutex_unlock(&notes->lock);
468 ui__warning("Not enough memory for annotating '%s' symbol!\n",
469 target.sym->name);
470 return true;
471 }
472
473 pthread_mutex_unlock(&notes->lock);
474 symbol__tui_annotate(target.sym, target.map, evsel, hbt);
475 sym_title(ms->sym, ms->map, title, sizeof(title));
476 ui_browser__show_title(&browser->b, title);
477 return true;
478 }
479
480 static
481 struct disasm_line *annotate_browser__find_offset(struct annotate_browser *browser,
482 s64 offset, s64 *idx)
483 {
484 struct map_symbol *ms = browser->b.priv;
485 struct symbol *sym = ms->sym;
486 struct annotation *notes = symbol__annotation(sym);
487 struct disasm_line *pos;
488
489 *idx = 0;
490 list_for_each_entry(pos, &notes->src->source, node) {
491 if (pos->offset == offset)
492 return pos;
493 if (!disasm_line__filter(&browser->b, &pos->node))
494 ++*idx;
495 }
496
497 return NULL;
498 }
499
500 static bool annotate_browser__jump(struct annotate_browser *browser)
501 {
502 struct disasm_line *dl = browser->selection;
503 s64 idx;
504
505 if (!ins__is_jump(dl->ins))
506 return false;
507
508 dl = annotate_browser__find_offset(browser, dl->ops.target.offset, &idx);
509 if (dl == NULL) {
510 ui_helpline__puts("Invalid jump offset");
511 return true;
512 }
513
514 annotate_browser__set_top(browser, dl, idx);
515
516 return true;
517 }
518
519 static
520 struct disasm_line *annotate_browser__find_string(struct annotate_browser *browser,
521 char *s, s64 *idx)
522 {
523 struct map_symbol *ms = browser->b.priv;
524 struct symbol *sym = ms->sym;
525 struct annotation *notes = symbol__annotation(sym);
526 struct disasm_line *pos = browser->selection;
527
528 *idx = browser->b.index;
529 list_for_each_entry_continue(pos, &notes->src->source, node) {
530 if (disasm_line__filter(&browser->b, &pos->node))
531 continue;
532
533 ++*idx;
534
535 if (pos->line && strstr(pos->line, s) != NULL)
536 return pos;
537 }
538
539 return NULL;
540 }
541
542 static bool __annotate_browser__search(struct annotate_browser *browser)
543 {
544 struct disasm_line *dl;
545 s64 idx;
546
547 dl = annotate_browser__find_string(browser, browser->search_bf, &idx);
548 if (dl == NULL) {
549 ui_helpline__puts("String not found!");
550 return false;
551 }
552
553 annotate_browser__set_top(browser, dl, idx);
554 browser->searching_backwards = false;
555 return true;
556 }
557
558 static
559 struct disasm_line *annotate_browser__find_string_reverse(struct annotate_browser *browser,
560 char *s, s64 *idx)
561 {
562 struct map_symbol *ms = browser->b.priv;
563 struct symbol *sym = ms->sym;
564 struct annotation *notes = symbol__annotation(sym);
565 struct disasm_line *pos = browser->selection;
566
567 *idx = browser->b.index;
568 list_for_each_entry_continue_reverse(pos, &notes->src->source, node) {
569 if (disasm_line__filter(&browser->b, &pos->node))
570 continue;
571
572 --*idx;
573
574 if (pos->line && strstr(pos->line, s) != NULL)
575 return pos;
576 }
577
578 return NULL;
579 }
580
581 static bool __annotate_browser__search_reverse(struct annotate_browser *browser)
582 {
583 struct disasm_line *dl;
584 s64 idx;
585
586 dl = annotate_browser__find_string_reverse(browser, browser->search_bf, &idx);
587 if (dl == NULL) {
588 ui_helpline__puts("String not found!");
589 return false;
590 }
591
592 annotate_browser__set_top(browser, dl, idx);
593 browser->searching_backwards = true;
594 return true;
595 }
596
597 static bool annotate_browser__search_window(struct annotate_browser *browser,
598 int delay_secs)
599 {
600 if (ui_browser__input_window("Search", "String: ", browser->search_bf,
601 "ENTER: OK, ESC: Cancel",
602 delay_secs * 2) != K_ENTER ||
603 !*browser->search_bf)
604 return false;
605
606 return true;
607 }
608
609 static bool annotate_browser__search(struct annotate_browser *browser, int delay_secs)
610 {
611 if (annotate_browser__search_window(browser, delay_secs))
612 return __annotate_browser__search(browser);
613
614 return false;
615 }
616
617 static bool annotate_browser__continue_search(struct annotate_browser *browser,
618 int delay_secs)
619 {
620 if (!*browser->search_bf)
621 return annotate_browser__search(browser, delay_secs);
622
623 return __annotate_browser__search(browser);
624 }
625
626 static bool annotate_browser__search_reverse(struct annotate_browser *browser,
627 int delay_secs)
628 {
629 if (annotate_browser__search_window(browser, delay_secs))
630 return __annotate_browser__search_reverse(browser);
631
632 return false;
633 }
634
635 static
636 bool annotate_browser__continue_search_reverse(struct annotate_browser *browser,
637 int delay_secs)
638 {
639 if (!*browser->search_bf)
640 return annotate_browser__search_reverse(browser, delay_secs);
641
642 return __annotate_browser__search_reverse(browser);
643 }
644
645 static void annotate_browser__update_addr_width(struct annotate_browser *browser)
646 {
647 if (annotate_browser__opts.use_offset)
648 browser->target_width = browser->min_addr_width;
649 else
650 browser->target_width = browser->max_addr_width;
651
652 browser->addr_width = browser->target_width;
653
654 if (annotate_browser__opts.show_nr_jumps)
655 browser->addr_width += browser->jumps_width + 1;
656 }
657
658 static int annotate_browser__run(struct annotate_browser *browser,
659 struct perf_evsel *evsel,
660 struct hist_browser_timer *hbt)
661 {
662 struct rb_node *nd = NULL;
663 struct map_symbol *ms = browser->b.priv;
664 struct symbol *sym = ms->sym;
665 const char *help = "Press 'h' for help on key bindings";
666 int delay_secs = hbt ? hbt->refresh : 0;
667 int key;
668 char title[SYM_TITLE_MAX_SIZE];
669
670 sym_title(sym, ms->map, title, sizeof(title));
671 if (ui_browser__show(&browser->b, title, help) < 0)
672 return -1;
673
674 annotate_browser__calc_percent(browser, evsel);
675
676 if (browser->curr_hot) {
677 annotate_browser__set_rb_top(browser, browser->curr_hot);
678 browser->b.navkeypressed = false;
679 }
680
681 nd = browser->curr_hot;
682
683 while (1) {
684 key = ui_browser__run(&browser->b, delay_secs);
685
686 if (delay_secs != 0) {
687 annotate_browser__calc_percent(browser, evsel);
688 /*
689 * Current line focus got out of the list of most active
690 * lines, NULL it so that if TAB|UNTAB is pressed, we
691 * move to curr_hot (current hottest line).
692 */
693 if (nd != NULL && RB_EMPTY_NODE(nd))
694 nd = NULL;
695 }
696
697 switch (key) {
698 case K_TIMER:
699 if (hbt)
700 hbt->timer(hbt->arg);
701
702 if (delay_secs != 0)
703 symbol__annotate_decay_histogram(sym, evsel->idx);
704 continue;
705 case K_TAB:
706 if (nd != NULL) {
707 nd = rb_prev(nd);
708 if (nd == NULL)
709 nd = rb_last(&browser->entries);
710 } else
711 nd = browser->curr_hot;
712 break;
713 case K_UNTAB:
714 if (nd != NULL)
715 nd = rb_next(nd);
716 if (nd == NULL)
717 nd = rb_first(&browser->entries);
718 else
719 nd = browser->curr_hot;
720 break;
721 case K_F1:
722 case 'h':
723 ui_browser__help_window(&browser->b,
724 "UP/DOWN/PGUP\n"
725 "PGDN/SPACE Navigate\n"
726 "q/ESC/CTRL+C Exit\n\n"
727 "-> Go to target\n"
728 "<- Exit\n"
729 "H Cycle thru hottest instructions\n"
730 "j Toggle showing jump to target arrows\n"
731 "J Toggle showing number of jump sources on targets\n"
732 "n Search next string\n"
733 "o Toggle disassembler output/simplified view\n"
734 "s Toggle source code view\n"
735 "/ Search string\n"
736 "r Run available scripts\n"
737 "? Search string backwards\n");
738 continue;
739 case 'r':
740 {
741 script_browse(NULL);
742 continue;
743 }
744 case 'H':
745 nd = browser->curr_hot;
746 break;
747 case 's':
748 if (annotate_browser__toggle_source(browser))
749 ui_helpline__puts(help);
750 continue;
751 case 'o':
752 annotate_browser__opts.use_offset = !annotate_browser__opts.use_offset;
753 annotate_browser__update_addr_width(browser);
754 continue;
755 case 'j':
756 annotate_browser__opts.jump_arrows = !annotate_browser__opts.jump_arrows;
757 continue;
758 case 'J':
759 annotate_browser__opts.show_nr_jumps = !annotate_browser__opts.show_nr_jumps;
760 annotate_browser__update_addr_width(browser);
761 continue;
762 case '/':
763 if (annotate_browser__search(browser, delay_secs)) {
764 show_help:
765 ui_helpline__puts(help);
766 }
767 continue;
768 case 'n':
769 if (browser->searching_backwards ?
770 annotate_browser__continue_search_reverse(browser, delay_secs) :
771 annotate_browser__continue_search(browser, delay_secs))
772 goto show_help;
773 continue;
774 case '?':
775 if (annotate_browser__search_reverse(browser, delay_secs))
776 goto show_help;
777 continue;
778 case 'D': {
779 static int seq;
780 ui_helpline__pop();
781 ui_helpline__fpush("%d: nr_ent=%d, height=%d, idx=%d, top_idx=%d, nr_asm_entries=%d",
782 seq++, browser->b.nr_entries,
783 browser->b.height,
784 browser->b.index,
785 browser->b.top_idx,
786 browser->nr_asm_entries);
787 }
788 continue;
789 case K_ENTER:
790 case K_RIGHT:
791 if (browser->selection == NULL)
792 ui_helpline__puts("Huh? No selection. Report to linux-kernel@vger.kernel.org");
793 else if (browser->selection->offset == -1)
794 ui_helpline__puts("Actions are only available for assembly lines.");
795 else if (!browser->selection->ins) {
796 if (strcmp(browser->selection->name, "retq"))
797 goto show_sup_ins;
798 goto out;
799 } else if (!(annotate_browser__jump(browser) ||
800 annotate_browser__callq(browser, evsel, hbt))) {
801 show_sup_ins:
802 ui_helpline__puts("Actions are only available for 'callq', 'retq' & jump instructions.");
803 }
804 continue;
805 case K_LEFT:
806 case K_ESC:
807 case 'q':
808 case CTRL('c'):
809 goto out;
810 default:
811 continue;
812 }
813
814 if (nd != NULL)
815 annotate_browser__set_rb_top(browser, nd);
816 }
817 out:
818 ui_browser__hide(&browser->b);
819 return key;
820 }
821
822 int hist_entry__tui_annotate(struct hist_entry *he, struct perf_evsel *evsel,
823 struct hist_browser_timer *hbt)
824 {
825 return symbol__tui_annotate(he->ms.sym, he->ms.map, evsel, hbt);
826 }
827
828 static void annotate_browser__mark_jump_targets(struct annotate_browser *browser,
829 size_t size)
830 {
831 u64 offset;
832 struct map_symbol *ms = browser->b.priv;
833 struct symbol *sym = ms->sym;
834
835 /* PLT symbols contain external offsets */
836 if (strstr(sym->name, "@plt"))
837 return;
838
839 for (offset = 0; offset < size; ++offset) {
840 struct disasm_line *dl = browser->offsets[offset], *dlt;
841 struct browser_disasm_line *bdlt;
842
843 if (!disasm_line__is_valid_jump(dl, sym))
844 continue;
845
846 dlt = browser->offsets[dl->ops.target.offset];
847 /*
848 * FIXME: Oops, no jump target? Buggy disassembler? Or do we
849 * have to adjust to the previous offset?
850 */
851 if (dlt == NULL)
852 continue;
853
854 bdlt = disasm_line__browser(dlt);
855 if (++bdlt->jump_sources > browser->max_jump_sources)
856 browser->max_jump_sources = bdlt->jump_sources;
857
858 ++browser->nr_jumps;
859 }
860
861 }
862
863 static inline int width_jumps(int n)
864 {
865 if (n >= 100)
866 return 5;
867 if (n / 10)
868 return 2;
869 return 1;
870 }
871
872 int symbol__tui_annotate(struct symbol *sym, struct map *map,
873 struct perf_evsel *evsel,
874 struct hist_browser_timer *hbt)
875 {
876 struct disasm_line *pos, *n;
877 struct annotation *notes;
878 size_t size;
879 struct map_symbol ms = {
880 .map = map,
881 .sym = sym,
882 };
883 struct annotate_browser browser = {
884 .b = {
885 .refresh = annotate_browser__refresh,
886 .seek = ui_browser__list_head_seek,
887 .write = annotate_browser__write,
888 .filter = disasm_line__filter,
889 .priv = &ms,
890 .use_navkeypressed = true,
891 },
892 };
893 int ret = -1;
894 int nr_pcnt = 1;
895 size_t sizeof_bdl = sizeof(struct browser_disasm_line);
896
897 if (sym == NULL)
898 return -1;
899
900 size = symbol__size(sym);
901
902 if (map->dso->annotate_warned)
903 return -1;
904
905 browser.offsets = zalloc(size * sizeof(struct disasm_line *));
906 if (browser.offsets == NULL) {
907 ui__error("Not enough memory!");
908 return -1;
909 }
910
911 if (perf_evsel__is_group_event(evsel)) {
912 nr_pcnt = evsel->nr_members;
913 sizeof_bdl += sizeof(double) * (nr_pcnt - 1);
914 }
915
916 if (symbol__annotate(sym, map, sizeof_bdl) < 0) {
917 ui__error("%s", ui_helpline__last_msg);
918 goto out_free_offsets;
919 }
920
921 ui_helpline__push("Press <- or ESC to exit");
922
923 notes = symbol__annotation(sym);
924 browser.start = map__rip_2objdump(map, sym->start);
925
926 list_for_each_entry(pos, &notes->src->source, node) {
927 struct browser_disasm_line *bpos;
928 size_t line_len = strlen(pos->line);
929
930 if (browser.b.width < line_len)
931 browser.b.width = line_len;
932 bpos = disasm_line__browser(pos);
933 bpos->idx = browser.nr_entries++;
934 if (pos->offset != -1) {
935 bpos->idx_asm = browser.nr_asm_entries++;
936 /*
937 * FIXME: short term bandaid to cope with assembly
938 * routines that comes with labels in the same column
939 * as the address in objdump, sigh.
940 *
941 * E.g. copy_user_generic_unrolled
942 */
943 if (pos->offset < (s64)size)
944 browser.offsets[pos->offset] = pos;
945 } else
946 bpos->idx_asm = -1;
947 }
948
949 annotate_browser__mark_jump_targets(&browser, size);
950
951 browser.addr_width = browser.target_width = browser.min_addr_width = hex_width(size);
952 browser.max_addr_width = hex_width(sym->end);
953 browser.jumps_width = width_jumps(browser.max_jump_sources);
954 browser.nr_events = nr_pcnt;
955 browser.b.nr_entries = browser.nr_entries;
956 browser.b.entries = &notes->src->source,
957 browser.b.width += 18; /* Percentage */
958
959 if (annotate_browser__opts.hide_src_code)
960 annotate_browser__init_asm_mode(&browser);
961
962 annotate_browser__update_addr_width(&browser);
963
964 ret = annotate_browser__run(&browser, evsel, hbt);
965 list_for_each_entry_safe(pos, n, &notes->src->source, node) {
966 list_del(&pos->node);
967 disasm_line__free(pos);
968 }
969
970 out_free_offsets:
971 free(browser.offsets);
972 return ret;
973 }
974
975 #define ANNOTATE_CFG(n) \
976 { .name = #n, .value = &annotate_browser__opts.n, }
977
978 /*
979 * Keep the entries sorted, they are bsearch'ed
980 */
981 static struct annotate_config {
982 const char *name;
983 bool *value;
984 } annotate__configs[] = {
985 ANNOTATE_CFG(hide_src_code),
986 ANNOTATE_CFG(jump_arrows),
987 ANNOTATE_CFG(show_nr_jumps),
988 ANNOTATE_CFG(use_offset),
989 };
990
991 #undef ANNOTATE_CFG
992
993 static int annotate_config__cmp(const void *name, const void *cfgp)
994 {
995 const struct annotate_config *cfg = cfgp;
996
997 return strcmp(name, cfg->name);
998 }
999
1000 static int annotate__config(const char *var, const char *value,
1001 void *data __maybe_unused)
1002 {
1003 struct annotate_config *cfg;
1004 const char *name;
1005
1006 if (prefixcmp(var, "annotate.") != 0)
1007 return 0;
1008
1009 name = var + 9;
1010 cfg = bsearch(name, annotate__configs, ARRAY_SIZE(annotate__configs),
1011 sizeof(struct annotate_config), annotate_config__cmp);
1012
1013 if (cfg == NULL)
1014 return -1;
1015
1016 *cfg->value = perf_config_bool(name, value);
1017 return 0;
1018 }
1019
1020 void annotate_browser__init(void)
1021 {
1022 perf_config(annotate__config, NULL);
1023 }
Linux with added FPC-III support