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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 <pthread.h>
12#include <newt.h>
13
14struct browser_disasm_line {
15 struct rb_node rb_node;
16 double percent;
17 u32 idx;
18 int idx_asm;
19 int jump_sources;
20};
21
22static struct annotate_browser_opt {
23 bool hide_src_code,
24 use_offset,
25 jump_arrows,
26 show_nr_jumps;
27} annotate_browser__opts = {
28 .use_offset = true,
29 .jump_arrows = true,
30};
31
32struct annotate_browser {
33 struct ui_browser b;
34 struct rb_root entries;
35 struct rb_node *curr_hot;
36 struct disasm_line *selection;
37 struct disasm_line **offsets;
38 u64 start;
39 int nr_asm_entries;
40 int nr_entries;
41 int max_jump_sources;
42 int nr_jumps;
43 bool searching_backwards;
44 u8 addr_width;
45 u8 jumps_width;
46 u8 target_width;
47 u8 min_addr_width;
48 u8 max_addr_width;
49 char search_bf[128];
50};
51
52static inline struct browser_disasm_line *disasm_line__browser(struct disasm_line *dl)
53{
54 return (struct browser_disasm_line *)(dl + 1);
55}
56
57static bool disasm_line__filter(struct ui_browser *browser __used, void *entry)
58{
59 if (annotate_browser__opts.hide_src_code) {
60 struct disasm_line *dl = list_entry(entry, struct disasm_line, node);
61 return dl->offset == -1;
62 }
63
64 return false;
65}
66
67static int annotate_browser__jumps_percent_color(struct annotate_browser *browser,
68 int nr, bool current)
69{
70 if (current && (!browser->b.use_navkeypressed || browser->b.navkeypressed))
71 return HE_COLORSET_SELECTED;
72 if (nr == browser->max_jump_sources)
73 return HE_COLORSET_TOP;
74 if (nr > 1)
75 return HE_COLORSET_MEDIUM;
76 return HE_COLORSET_NORMAL;
77}
78
79static int annotate_browser__set_jumps_percent_color(struct annotate_browser *browser,
80 int nr, bool current)
81{
82 int color = annotate_browser__jumps_percent_color(browser, nr, current);
83 return ui_browser__set_color(&browser->b, color);
84}
85
86static void annotate_browser__write(struct ui_browser *browser, void *entry, int row)
87{
88 struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
89 struct disasm_line *dl = list_entry(entry, struct disasm_line, node);
90 struct browser_disasm_line *bdl = disasm_line__browser(dl);
91 bool current_entry = ui_browser__is_current_entry(browser, row);
92 bool change_color = (!annotate_browser__opts.hide_src_code &&
93 (!current_entry || (browser->use_navkeypressed &&
94 !browser->navkeypressed)));
95 int width = browser->width, printed;
96 char bf[256];
97
98 if (dl->offset != -1 && bdl->percent != 0.0) {
99 ui_browser__set_percent_color(browser, bdl->percent, current_entry);
100 slsmg_printf("%6.2f ", bdl->percent);
101 } else {
102 ui_browser__set_percent_color(browser, 0, current_entry);
103 slsmg_write_nstring(" ", 7);
104 }
105
106 SLsmg_write_char(' ');
107
108 /* The scroll bar isn't being used */
109 if (!browser->navkeypressed)
110 width += 1;
111
112 if (!*dl->line)
113 slsmg_write_nstring(" ", width - 7);
114 else if (dl->offset == -1) {
115 printed = scnprintf(bf, sizeof(bf), "%*s ",
116 ab->addr_width, " ");
117 slsmg_write_nstring(bf, printed);
118 slsmg_write_nstring(dl->line, width - printed - 6);
119 } else {
120 u64 addr = dl->offset;
121 int color = -1;
122
123 if (!annotate_browser__opts.use_offset)
124 addr += ab->start;
125
126 if (!annotate_browser__opts.use_offset) {
127 printed = scnprintf(bf, sizeof(bf), "%" PRIx64 ": ", addr);
128 } else {
129 if (bdl->jump_sources) {
130 if (annotate_browser__opts.show_nr_jumps) {
131 int prev;
132 printed = scnprintf(bf, sizeof(bf), "%*d ",
133 ab->jumps_width,
134 bdl->jump_sources);
135 prev = annotate_browser__set_jumps_percent_color(ab, bdl->jump_sources,
136 current_entry);
137 slsmg_write_nstring(bf, printed);
138 ui_browser__set_color(browser, prev);
139 }
140
141 printed = scnprintf(bf, sizeof(bf), "%*" PRIx64 ": ",
142 ab->target_width, addr);
143 } else {
144 printed = scnprintf(bf, sizeof(bf), "%*s ",
145 ab->addr_width, " ");
146 }
147 }
148
149 if (change_color)
150 color = ui_browser__set_color(browser, HE_COLORSET_ADDR);
151 slsmg_write_nstring(bf, printed);
152 if (change_color)
153 ui_browser__set_color(browser, color);
154 if (dl->ins && dl->ins->ops->scnprintf) {
155 if (ins__is_jump(dl->ins)) {
156 bool fwd = dl->ops.target.offset > (u64)dl->offset;
157
158 ui_browser__write_graph(browser, fwd ? SLSMG_DARROW_CHAR :
159 SLSMG_UARROW_CHAR);
160 SLsmg_write_char(' ');
161 } else if (ins__is_call(dl->ins)) {
162 ui_browser__write_graph(browser, SLSMG_RARROW_CHAR);
163 SLsmg_write_char(' ');
164 } else {
165 slsmg_write_nstring(" ", 2);
166 }
167 } else {
168 if (strcmp(dl->name, "retq")) {
169 slsmg_write_nstring(" ", 2);
170 } else {
171 ui_browser__write_graph(browser, SLSMG_LARROW_CHAR);
172 SLsmg_write_char(' ');
173 }
174 }
175
176 disasm_line__scnprintf(dl, bf, sizeof(bf), !annotate_browser__opts.use_offset);
177 slsmg_write_nstring(bf, width - 10 - printed);
178 }
179
180 if (current_entry)
181 ab->selection = dl;
182}
183
184static void annotate_browser__draw_current_jump(struct ui_browser *browser)
185{
186 struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
187 struct disasm_line *cursor = ab->selection, *target;
188 struct browser_disasm_line *btarget, *bcursor;
189 unsigned int from, to;
190
191 if (!cursor || !cursor->ins || !ins__is_jump(cursor->ins) ||
192 !disasm_line__has_offset(cursor))
193 return;
194
195 target = ab->offsets[cursor->ops.target.offset];
196 if (!target)
197 return;
198
199 bcursor = disasm_line__browser(cursor);
200 btarget = disasm_line__browser(target);
201
202 if (annotate_browser__opts.hide_src_code) {
203 from = bcursor->idx_asm;
204 to = btarget->idx_asm;
205 } else {
206 from = (u64)bcursor->idx;
207 to = (u64)btarget->idx;
208 }
209
210 ui_browser__set_color(browser, HE_COLORSET_CODE);
211 __ui_browser__line_arrow(browser, 9 + ab->addr_width, from, to);
212}
213
214static unsigned int annotate_browser__refresh(struct ui_browser *browser)
215{
216 int ret = ui_browser__list_head_refresh(browser);
217
218 if (annotate_browser__opts.jump_arrows)
219 annotate_browser__draw_current_jump(browser);
220
221 ui_browser__set_color(browser, HE_COLORSET_NORMAL);
222 __ui_browser__vline(browser, 7, 0, browser->height - 1);
223 return ret;
224}
225
226static double disasm_line__calc_percent(struct disasm_line *dl, struct symbol *sym, int evidx)
227{
228 double percent = 0.0;
229
230 if (dl->offset != -1) {
231 int len = sym->end - sym->start;
232 unsigned int hits = 0;
233 struct annotation *notes = symbol__annotation(sym);
234 struct source_line *src_line = notes->src->lines;
235 struct sym_hist *h = annotation__histogram(notes, evidx);
236 s64 offset = dl->offset;
237 struct disasm_line *next;
238
239 next = disasm__get_next_ip_line(¬es->src->source, dl);
240 while (offset < (s64)len &&
241 (next == NULL || offset < next->offset)) {
242 if (src_line) {
243 percent += src_line[offset].percent;
244 } else
245 hits += h->addr[offset];
246
247 ++offset;
248 }
249 /*
250 * If the percentage wasn't already calculated in
251 * symbol__get_source_line, do it now:
252 */
253 if (src_line == NULL && h->sum)
254 percent = 100.0 * hits / h->sum;
255 }
256
257 return percent;
258}
259
260static void disasm_rb_tree__insert(struct rb_root *root, struct browser_disasm_line *bdl)
261{
262 struct rb_node **p = &root->rb_node;
263 struct rb_node *parent = NULL;
264 struct browser_disasm_line *l;
265
266 while (*p != NULL) {
267 parent = *p;
268 l = rb_entry(parent, struct browser_disasm_line, rb_node);
269 if (bdl->percent < l->percent)
270 p = &(*p)->rb_left;
271 else
272 p = &(*p)->rb_right;
273 }
274 rb_link_node(&bdl->rb_node, parent, p);
275 rb_insert_color(&bdl->rb_node, root);
276}
277
278static void annotate_browser__set_top(struct annotate_browser *browser,
279 struct disasm_line *pos, u32 idx)
280{
281 unsigned back;
282
283 ui_browser__refresh_dimensions(&browser->b);
284 back = browser->b.height / 2;
285 browser->b.top_idx = browser->b.index = idx;
286
287 while (browser->b.top_idx != 0 && back != 0) {
288 pos = list_entry(pos->node.prev, struct disasm_line, node);
289
290 if (disasm_line__filter(&browser->b, &pos->node))
291 continue;
292
293 --browser->b.top_idx;
294 --back;
295 }
296
297 browser->b.top = pos;
298 browser->b.navkeypressed = true;
299}
300
301static void annotate_browser__set_rb_top(struct annotate_browser *browser,
302 struct rb_node *nd)
303{
304 struct browser_disasm_line *bpos;
305 struct disasm_line *pos;
306 u32 idx;
307
308 bpos = rb_entry(nd, struct browser_disasm_line, rb_node);
309 pos = ((struct disasm_line *)bpos) - 1;
310 idx = bpos->idx;
311 if (annotate_browser__opts.hide_src_code)
312 idx = bpos->idx_asm;
313 annotate_browser__set_top(browser, pos, idx);
314 browser->curr_hot = nd;
315}
316
317static void annotate_browser__calc_percent(struct annotate_browser *browser,
318 int evidx)
319{
320 struct map_symbol *ms = browser->b.priv;
321 struct symbol *sym = ms->sym;
322 struct annotation *notes = symbol__annotation(sym);
323 struct disasm_line *pos;
324
325 browser->entries = RB_ROOT;
326
327 pthread_mutex_lock(¬es->lock);
328
329 list_for_each_entry(pos, ¬es->src->source, node) {
330 struct browser_disasm_line *bpos = disasm_line__browser(pos);
331 bpos->percent = disasm_line__calc_percent(pos, sym, evidx);
332 if (bpos->percent < 0.01) {
333 RB_CLEAR_NODE(&bpos->rb_node);
334 continue;
335 }
336 disasm_rb_tree__insert(&browser->entries, bpos);
337 }
338 pthread_mutex_unlock(¬es->lock);
339
340 browser->curr_hot = rb_last(&browser->entries);
341}
342
343static bool annotate_browser__toggle_source(struct annotate_browser *browser)
344{
345 struct disasm_line *dl;
346 struct browser_disasm_line *bdl;
347 off_t offset = browser->b.index - browser->b.top_idx;
348
349 browser->b.seek(&browser->b, offset, SEEK_CUR);
350 dl = list_entry(browser->b.top, struct disasm_line, node);
351 bdl = disasm_line__browser(dl);
352
353 if (annotate_browser__opts.hide_src_code) {
354 if (bdl->idx_asm < offset)
355 offset = bdl->idx;
356
357 browser->b.nr_entries = browser->nr_entries;
358 annotate_browser__opts.hide_src_code = false;
359 browser->b.seek(&browser->b, -offset, SEEK_CUR);
360 browser->b.top_idx = bdl->idx - offset;
361 browser->b.index = bdl->idx;
362 } else {
363 if (bdl->idx_asm < 0) {
364 ui_helpline__puts("Only available for assembly lines.");
365 browser->b.seek(&browser->b, -offset, SEEK_CUR);
366 return false;
367 }
368
369 if (bdl->idx_asm < offset)
370 offset = bdl->idx_asm;
371
372 browser->b.nr_entries = browser->nr_asm_entries;
373 annotate_browser__opts.hide_src_code = true;
374 browser->b.seek(&browser->b, -offset, SEEK_CUR);
375 browser->b.top_idx = bdl->idx_asm - offset;
376 browser->b.index = bdl->idx_asm;
377 }
378
379 return true;
380}
381
382static void annotate_browser__init_asm_mode(struct annotate_browser *browser)
383{
384 ui_browser__reset_index(&browser->b);
385 browser->b.nr_entries = browser->nr_asm_entries;
386}
387
388static bool annotate_browser__callq(struct annotate_browser *browser,
389 int evidx, void (*timer)(void *arg),
390 void *arg, int delay_secs)
391{
392 struct map_symbol *ms = browser->b.priv;
393 struct disasm_line *dl = browser->selection;
394 struct symbol *sym = ms->sym;
395 struct annotation *notes;
396 struct symbol *target;
397 u64 ip;
398
399 if (!ins__is_call(dl->ins))
400 return false;
401
402 ip = ms->map->map_ip(ms->map, dl->ops.target.addr);
403 target = map__find_symbol(ms->map, ip, NULL);
404 if (target == NULL) {
405 ui_helpline__puts("The called function was not found.");
406 return true;
407 }
408
409 notes = symbol__annotation(target);
410 pthread_mutex_lock(¬es->lock);
411
412 if (notes->src == NULL && symbol__alloc_hist(target) < 0) {
413 pthread_mutex_unlock(¬es->lock);
414 ui__warning("Not enough memory for annotating '%s' symbol!\n",
415 target->name);
416 return true;
417 }
418
419 pthread_mutex_unlock(¬es->lock);
420 symbol__tui_annotate(target, ms->map, evidx, timer, arg, delay_secs);
421 ui_browser__show_title(&browser->b, sym->name);
422 return true;
423}
424
425static
426struct disasm_line *annotate_browser__find_offset(struct annotate_browser *browser,
427 s64 offset, s64 *idx)
428{
429 struct map_symbol *ms = browser->b.priv;
430 struct symbol *sym = ms->sym;
431 struct annotation *notes = symbol__annotation(sym);
432 struct disasm_line *pos;
433
434 *idx = 0;
435 list_for_each_entry(pos, ¬es->src->source, node) {
436 if (pos->offset == offset)
437 return pos;
438 if (!disasm_line__filter(&browser->b, &pos->node))
439 ++*idx;
440 }
441
442 return NULL;
443}
444
445static bool annotate_browser__jump(struct annotate_browser *browser)
446{
447 struct disasm_line *dl = browser->selection;
448 s64 idx;
449
450 if (!ins__is_jump(dl->ins))
451 return false;
452
453 dl = annotate_browser__find_offset(browser, dl->ops.target.offset, &idx);
454 if (dl == NULL) {
455 ui_helpline__puts("Invallid jump offset");
456 return true;
457 }
458
459 annotate_browser__set_top(browser, dl, idx);
460
461 return true;
462}
463
464static
465struct disasm_line *annotate_browser__find_string(struct annotate_browser *browser,
466 char *s, s64 *idx)
467{
468 struct map_symbol *ms = browser->b.priv;
469 struct symbol *sym = ms->sym;
470 struct annotation *notes = symbol__annotation(sym);
471 struct disasm_line *pos = browser->selection;
472
473 *idx = browser->b.index;
474 list_for_each_entry_continue(pos, ¬es->src->source, node) {
475 if (disasm_line__filter(&browser->b, &pos->node))
476 continue;
477
478 ++*idx;
479
480 if (pos->line && strstr(pos->line, s) != NULL)
481 return pos;
482 }
483
484 return NULL;
485}
486
487static bool __annotate_browser__search(struct annotate_browser *browser)
488{
489 struct disasm_line *dl;
490 s64 idx;
491
492 dl = annotate_browser__find_string(browser, browser->search_bf, &idx);
493 if (dl == NULL) {
494 ui_helpline__puts("String not found!");
495 return false;
496 }
497
498 annotate_browser__set_top(browser, dl, idx);
499 browser->searching_backwards = false;
500 return true;
501}
502
503static
504struct disasm_line *annotate_browser__find_string_reverse(struct annotate_browser *browser,
505 char *s, s64 *idx)
506{
507 struct map_symbol *ms = browser->b.priv;
508 struct symbol *sym = ms->sym;
509 struct annotation *notes = symbol__annotation(sym);
510 struct disasm_line *pos = browser->selection;
511
512 *idx = browser->b.index;
513 list_for_each_entry_continue_reverse(pos, ¬es->src->source, node) {
514 if (disasm_line__filter(&browser->b, &pos->node))
515 continue;
516
517 --*idx;
518
519 if (pos->line && strstr(pos->line, s) != NULL)
520 return pos;
521 }
522
523 return NULL;
524}
525
526static bool __annotate_browser__search_reverse(struct annotate_browser *browser)
527{
528 struct disasm_line *dl;
529 s64 idx;
530
531 dl = annotate_browser__find_string_reverse(browser, browser->search_bf, &idx);
532 if (dl == NULL) {
533 ui_helpline__puts("String not found!");
534 return false;
535 }
536
537 annotate_browser__set_top(browser, dl, idx);
538 browser->searching_backwards = true;
539 return true;
540}
541
542static bool annotate_browser__search_window(struct annotate_browser *browser,
543 int delay_secs)
544{
545 if (ui_browser__input_window("Search", "String: ", browser->search_bf,
546 "ENTER: OK, ESC: Cancel",
547 delay_secs * 2) != K_ENTER ||
548 !*browser->search_bf)
549 return false;
550
551 return true;
552}
553
554static bool annotate_browser__search(struct annotate_browser *browser, int delay_secs)
555{
556 if (annotate_browser__search_window(browser, delay_secs))
557 return __annotate_browser__search(browser);
558
559 return false;
560}
561
562static bool annotate_browser__continue_search(struct annotate_browser *browser,
563 int delay_secs)
564{
565 if (!*browser->search_bf)
566 return annotate_browser__search(browser, delay_secs);
567
568 return __annotate_browser__search(browser);
569}
570
571static bool annotate_browser__search_reverse(struct annotate_browser *browser,
572 int delay_secs)
573{
574 if (annotate_browser__search_window(browser, delay_secs))
575 return __annotate_browser__search_reverse(browser);
576
577 return false;
578}
579
580static
581bool annotate_browser__continue_search_reverse(struct annotate_browser *browser,
582 int delay_secs)
583{
584 if (!*browser->search_bf)
585 return annotate_browser__search_reverse(browser, delay_secs);
586
587 return __annotate_browser__search_reverse(browser);
588}
589
590static void annotate_browser__update_addr_width(struct annotate_browser *browser)
591{
592 if (annotate_browser__opts.use_offset)
593 browser->target_width = browser->min_addr_width;
594 else
595 browser->target_width = browser->max_addr_width;
596
597 browser->addr_width = browser->target_width;
598
599 if (annotate_browser__opts.show_nr_jumps)
600 browser->addr_width += browser->jumps_width + 1;
601}
602
603static int annotate_browser__run(struct annotate_browser *browser, int evidx,
604 void(*timer)(void *arg),
605 void *arg, int delay_secs)
606{
607 struct rb_node *nd = NULL;
608 struct map_symbol *ms = browser->b.priv;
609 struct symbol *sym = ms->sym;
610 const char *help = "Press 'h' for help on key bindings";
611 int key;
612
613 if (ui_browser__show(&browser->b, sym->name, help) < 0)
614 return -1;
615
616 annotate_browser__calc_percent(browser, evidx);
617
618 if (browser->curr_hot) {
619 annotate_browser__set_rb_top(browser, browser->curr_hot);
620 browser->b.navkeypressed = false;
621 }
622
623 nd = browser->curr_hot;
624
625 while (1) {
626 key = ui_browser__run(&browser->b, delay_secs);
627
628 if (delay_secs != 0) {
629 annotate_browser__calc_percent(browser, evidx);
630 /*
631 * Current line focus got out of the list of most active
632 * lines, NULL it so that if TAB|UNTAB is pressed, we
633 * move to curr_hot (current hottest line).
634 */
635 if (nd != NULL && RB_EMPTY_NODE(nd))
636 nd = NULL;
637 }
638
639 switch (key) {
640 case K_TIMER:
641 if (timer != NULL)
642 timer(arg);
643
644 if (delay_secs != 0)
645 symbol__annotate_decay_histogram(sym, evidx);
646 continue;
647 case K_TAB:
648 if (nd != NULL) {
649 nd = rb_prev(nd);
650 if (nd == NULL)
651 nd = rb_last(&browser->entries);
652 } else
653 nd = browser->curr_hot;
654 break;
655 case K_UNTAB:
656 if (nd != NULL)
657 nd = rb_next(nd);
658 if (nd == NULL)
659 nd = rb_first(&browser->entries);
660 else
661 nd = browser->curr_hot;
662 break;
663 case K_F1:
664 case 'h':
665 ui_browser__help_window(&browser->b,
666 "UP/DOWN/PGUP\n"
667 "PGDN/SPACE Navigate\n"
668 "q/ESC/CTRL+C Exit\n\n"
669 "-> Go to target\n"
670 "<- Exit\n"
671 "H Cycle thru hottest instructions\n"
672 "j Toggle showing jump to target arrows\n"
673 "J Toggle showing number of jump sources on targets\n"
674 "n Search next string\n"
675 "o Toggle disassembler output/simplified view\n"
676 "s Toggle source code view\n"
677 "/ Search string\n"
678 "? Search previous string\n");
679 continue;
680 case 'H':
681 nd = browser->curr_hot;
682 break;
683 case 's':
684 if (annotate_browser__toggle_source(browser))
685 ui_helpline__puts(help);
686 continue;
687 case 'o':
688 annotate_browser__opts.use_offset = !annotate_browser__opts.use_offset;
689 annotate_browser__update_addr_width(browser);
690 continue;
691 case 'j':
692 annotate_browser__opts.jump_arrows = !annotate_browser__opts.jump_arrows;
693 continue;
694 case 'J':
695 annotate_browser__opts.show_nr_jumps = !annotate_browser__opts.show_nr_jumps;
696 annotate_browser__update_addr_width(browser);
697 continue;
698 case '/':
699 if (annotate_browser__search(browser, delay_secs)) {
700show_help:
701 ui_helpline__puts(help);
702 }
703 continue;
704 case 'n':
705 if (browser->searching_backwards ?
706 annotate_browser__continue_search_reverse(browser, delay_secs) :
707 annotate_browser__continue_search(browser, delay_secs))
708 goto show_help;
709 continue;
710 case '?':
711 if (annotate_browser__search_reverse(browser, delay_secs))
712 goto show_help;
713 continue;
714 case 'D': {
715 static int seq;
716 ui_helpline__pop();
717 ui_helpline__fpush("%d: nr_ent=%d, height=%d, idx=%d, top_idx=%d, nr_asm_entries=%d",
718 seq++, browser->b.nr_entries,
719 browser->b.height,
720 browser->b.index,
721 browser->b.top_idx,
722 browser->nr_asm_entries);
723 }
724 continue;
725 case K_ENTER:
726 case K_RIGHT:
727 if (browser->selection == NULL)
728 ui_helpline__puts("Huh? No selection. Report to linux-kernel@vger.kernel.org");
729 else if (browser->selection->offset == -1)
730 ui_helpline__puts("Actions are only available for assembly lines.");
731 else if (!browser->selection->ins) {
732 if (strcmp(browser->selection->name, "retq"))
733 goto show_sup_ins;
734 goto out;
735 } else if (!(annotate_browser__jump(browser) ||
736 annotate_browser__callq(browser, evidx, timer, arg, delay_secs))) {
737show_sup_ins:
738 ui_helpline__puts("Actions are only available for 'callq', 'retq' & jump instructions.");
739 }
740 continue;
741 case K_LEFT:
742 case K_ESC:
743 case 'q':
744 case CTRL('c'):
745 goto out;
746 default:
747 continue;
748 }
749
750 if (nd != NULL)
751 annotate_browser__set_rb_top(browser, nd);
752 }
753out:
754 ui_browser__hide(&browser->b);
755 return key;
756}
757
758int hist_entry__tui_annotate(struct hist_entry *he, int evidx,
759 void(*timer)(void *arg), void *arg, int delay_secs)
760{
761 return symbol__tui_annotate(he->ms.sym, he->ms.map, evidx,
762 timer, arg, delay_secs);
763}
764
765static void annotate_browser__mark_jump_targets(struct annotate_browser *browser,
766 size_t size)
767{
768 u64 offset;
769
770 for (offset = 0; offset < size; ++offset) {
771 struct disasm_line *dl = browser->offsets[offset], *dlt;
772 struct browser_disasm_line *bdlt;
773
774 if (!dl || !dl->ins || !ins__is_jump(dl->ins) ||
775 !disasm_line__has_offset(dl))
776 continue;
777
778 if (dl->ops.target.offset >= size) {
779 ui__error("jump to after symbol!\n"
780 "size: %zx, jump target: %" PRIx64,
781 size, dl->ops.target.offset);
782 continue;
783 }
784
785 dlt = browser->offsets[dl->ops.target.offset];
786 /*
787 * FIXME: Oops, no jump target? Buggy disassembler? Or do we
788 * have to adjust to the previous offset?
789 */
790 if (dlt == NULL)
791 continue;
792
793 bdlt = disasm_line__browser(dlt);
794 if (++bdlt->jump_sources > browser->max_jump_sources)
795 browser->max_jump_sources = bdlt->jump_sources;
796
797 ++browser->nr_jumps;
798 }
799
800}
801
802static inline int width_jumps(int n)
803{
804 if (n >= 100)
805 return 5;
806 if (n / 10)
807 return 2;
808 return 1;
809}
810
811int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,
812 void(*timer)(void *arg), void *arg,
813 int delay_secs)
814{
815 struct disasm_line *pos, *n;
816 struct annotation *notes;
817 const size_t size = symbol__size(sym);
818 struct map_symbol ms = {
819 .map = map,
820 .sym = sym,
821 };
822 struct annotate_browser browser = {
823 .b = {
824 .refresh = annotate_browser__refresh,
825 .seek = ui_browser__list_head_seek,
826 .write = annotate_browser__write,
827 .filter = disasm_line__filter,
828 .priv = &ms,
829 .use_navkeypressed = true,
830 },
831 };
832 int ret = -1;
833
834 if (sym == NULL)
835 return -1;
836
837 if (map->dso->annotate_warned)
838 return -1;
839
840 browser.offsets = zalloc(size * sizeof(struct disasm_line *));
841 if (browser.offsets == NULL) {
842 ui__error("Not enough memory!");
843 return -1;
844 }
845
846 if (symbol__annotate(sym, map, sizeof(struct browser_disasm_line)) < 0) {
847 ui__error("%s", ui_helpline__last_msg);
848 goto out_free_offsets;
849 }
850
851 ui_helpline__push("Press <- or ESC to exit");
852
853 notes = symbol__annotation(sym);
854 browser.start = map__rip_2objdump(map, sym->start);
855
856 list_for_each_entry(pos, ¬es->src->source, node) {
857 struct browser_disasm_line *bpos;
858 size_t line_len = strlen(pos->line);
859
860 if (browser.b.width < line_len)
861 browser.b.width = line_len;
862 bpos = disasm_line__browser(pos);
863 bpos->idx = browser.nr_entries++;
864 if (pos->offset != -1) {
865 bpos->idx_asm = browser.nr_asm_entries++;
866 /*
867 * FIXME: short term bandaid to cope with assembly
868 * routines that comes with labels in the same column
869 * as the address in objdump, sigh.
870 *
871 * E.g. copy_user_generic_unrolled
872 */
873 if (pos->offset < (s64)size)
874 browser.offsets[pos->offset] = pos;
875 } else
876 bpos->idx_asm = -1;
877 }
878
879 annotate_browser__mark_jump_targets(&browser, size);
880
881 browser.addr_width = browser.target_width = browser.min_addr_width = hex_width(size);
882 browser.max_addr_width = hex_width(sym->end);
883 browser.jumps_width = width_jumps(browser.max_jump_sources);
884 browser.b.nr_entries = browser.nr_entries;
885 browser.b.entries = ¬es->src->source,
886 browser.b.width += 18; /* Percentage */
887
888 if (annotate_browser__opts.hide_src_code)
889 annotate_browser__init_asm_mode(&browser);
890
891 annotate_browser__update_addr_width(&browser);
892
893 ret = annotate_browser__run(&browser, evidx, timer, arg, delay_secs);
894 list_for_each_entry_safe(pos, n, ¬es->src->source, node) {
895 list_del(&pos->node);
896 disasm_line__free(pos);
897 }
898
899out_free_offsets:
900 free(browser.offsets);
901 return ret;
902}
903
904#define ANNOTATE_CFG(n) \
905 { .name = #n, .value = &annotate_browser__opts.n, }
906
907/*
908 * Keep the entries sorted, they are bsearch'ed
909 */
910static struct annotate__config {
911 const char *name;
912 bool *value;
913} annotate__configs[] = {
914 ANNOTATE_CFG(hide_src_code),
915 ANNOTATE_CFG(jump_arrows),
916 ANNOTATE_CFG(show_nr_jumps),
917 ANNOTATE_CFG(use_offset),
918};
919
920#undef ANNOTATE_CFG
921
922static int annotate_config__cmp(const void *name, const void *cfgp)
923{
924 const struct annotate__config *cfg = cfgp;
925
926 return strcmp(name, cfg->name);
927}
928
929static int annotate__config(const char *var, const char *value, void *data __used)
930{
931 struct annotate__config *cfg;
932 const char *name;
933
934 if (prefixcmp(var, "annotate.") != 0)
935 return 0;
936
937 name = var + 9;
938 cfg = bsearch(name, annotate__configs, ARRAY_SIZE(annotate__configs),
939 sizeof(struct annotate__config), annotate_config__cmp);
940
941 if (cfg == NULL)
942 return -1;
943
944 *cfg->value = perf_config_bool(name, value);
945 return 0;
946}
947
948void annotate_browser__init(void)
949{
950 perf_config(annotate__config, NULL);
951}
1// SPDX-License-Identifier: GPL-2.0
2#include "../browser.h"
3#include "../helpline.h"
4#include "../ui.h"
5#include "../../util/annotate.h"
6#include "../../util/debug.h"
7#include "../../util/dso.h"
8#include "../../util/hist.h"
9#include "../../util/sort.h"
10#include "../../util/map.h"
11#include "../../util/mutex.h"
12#include "../../util/symbol.h"
13#include "../../util/evsel.h"
14#include "../../util/evlist.h"
15#include <inttypes.h>
16#include <linux/kernel.h>
17#include <linux/string.h>
18#include <linux/zalloc.h>
19#include <sys/ttydefaults.h>
20#include <asm/bug.h>
21
22struct arch;
23
24struct annotate_browser {
25 struct ui_browser b;
26 struct rb_root entries;
27 struct rb_node *curr_hot;
28 struct annotation_line *selection;
29 struct arch *arch;
30 struct annotation_options *opts;
31 bool searching_backwards;
32 char search_bf[128];
33};
34
35static inline struct annotation *browser__annotation(struct ui_browser *browser)
36{
37 struct map_symbol *ms = browser->priv;
38 return symbol__annotation(ms->sym);
39}
40
41static bool disasm_line__filter(struct ui_browser *browser, void *entry)
42{
43 struct annotation *notes = browser__annotation(browser);
44 struct annotation_line *al = list_entry(entry, struct annotation_line, node);
45 return annotation_line__filter(al, notes);
46}
47
48static int ui_browser__jumps_percent_color(struct ui_browser *browser, int nr, bool current)
49{
50 struct annotation *notes = browser__annotation(browser);
51
52 if (current && (!browser->use_navkeypressed || browser->navkeypressed))
53 return HE_COLORSET_SELECTED;
54 if (nr == notes->max_jump_sources)
55 return HE_COLORSET_TOP;
56 if (nr > 1)
57 return HE_COLORSET_MEDIUM;
58 return HE_COLORSET_NORMAL;
59}
60
61static int ui_browser__set_jumps_percent_color(void *browser, int nr, bool current)
62{
63 int color = ui_browser__jumps_percent_color(browser, nr, current);
64 return ui_browser__set_color(browser, color);
65}
66
67static int annotate_browser__set_color(void *browser, int color)
68{
69 return ui_browser__set_color(browser, color);
70}
71
72static void annotate_browser__write_graph(void *browser, int graph)
73{
74 ui_browser__write_graph(browser, graph);
75}
76
77static void annotate_browser__set_percent_color(void *browser, double percent, bool current)
78{
79 ui_browser__set_percent_color(browser, percent, current);
80}
81
82static void annotate_browser__printf(void *browser, const char *fmt, ...)
83{
84 va_list args;
85
86 va_start(args, fmt);
87 ui_browser__vprintf(browser, fmt, args);
88 va_end(args);
89}
90
91static void annotate_browser__write(struct ui_browser *browser, void *entry, int row)
92{
93 struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
94 struct annotation *notes = browser__annotation(browser);
95 struct annotation_line *al = list_entry(entry, struct annotation_line, node);
96 const bool is_current_entry = ui_browser__is_current_entry(browser, row);
97 struct annotation_write_ops ops = {
98 .first_line = row == 0,
99 .current_entry = is_current_entry,
100 .change_color = (!notes->options->hide_src_code &&
101 (!is_current_entry ||
102 (browser->use_navkeypressed &&
103 !browser->navkeypressed))),
104 .width = browser->width,
105 .obj = browser,
106 .set_color = annotate_browser__set_color,
107 .set_percent_color = annotate_browser__set_percent_color,
108 .set_jumps_percent_color = ui_browser__set_jumps_percent_color,
109 .printf = annotate_browser__printf,
110 .write_graph = annotate_browser__write_graph,
111 };
112
113 /* The scroll bar isn't being used */
114 if (!browser->navkeypressed)
115 ops.width += 1;
116
117 annotation_line__write(al, notes, &ops, ab->opts);
118
119 if (ops.current_entry)
120 ab->selection = al;
121}
122
123static int is_fused(struct annotate_browser *ab, struct disasm_line *cursor)
124{
125 struct disasm_line *pos = list_prev_entry(cursor, al.node);
126 const char *name;
127 int diff = 1;
128
129 while (pos && pos->al.offset == -1) {
130 pos = list_prev_entry(pos, al.node);
131 if (!ab->opts->hide_src_code)
132 diff++;
133 }
134
135 if (!pos)
136 return 0;
137
138 if (ins__is_lock(&pos->ins))
139 name = pos->ops.locked.ins.name;
140 else
141 name = pos->ins.name;
142
143 if (!name || !cursor->ins.name)
144 return 0;
145
146 if (ins__is_fused(ab->arch, name, cursor->ins.name))
147 return diff;
148 return 0;
149}
150
151static void annotate_browser__draw_current_jump(struct ui_browser *browser)
152{
153 struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
154 struct disasm_line *cursor = disasm_line(ab->selection);
155 struct annotation_line *target;
156 unsigned int from, to;
157 struct map_symbol *ms = ab->b.priv;
158 struct symbol *sym = ms->sym;
159 struct annotation *notes = symbol__annotation(sym);
160 u8 pcnt_width = annotation__pcnt_width(notes);
161 int width;
162 int diff = 0;
163
164 /* PLT symbols contain external offsets */
165 if (strstr(sym->name, "@plt"))
166 return;
167
168 if (!disasm_line__is_valid_local_jump(cursor, sym))
169 return;
170
171 /*
172 * This first was seen with a gcc function, _cpp_lex_token, that
173 * has the usual jumps:
174 *
175 * │1159e6c: ↓ jne 115aa32 <_cpp_lex_token@@Base+0xf92>
176 *
177 * I.e. jumps to a label inside that function (_cpp_lex_token), and
178 * those works, but also this kind:
179 *
180 * │1159e8b: ↓ jne c469be <cpp_named_operator2name@@Base+0xa72>
181 *
182 * I.e. jumps to another function, outside _cpp_lex_token, which
183 * are not being correctly handled generating as a side effect references
184 * to ab->offset[] entries that are set to NULL, so to make this code
185 * more robust, check that here.
186 *
187 * A proper fix for will be put in place, looking at the function
188 * name right after the '<' token and probably treating this like a
189 * 'call' instruction.
190 */
191 target = notes->offsets[cursor->ops.target.offset];
192 if (target == NULL) {
193 ui_helpline__printf("WARN: jump target inconsistency, press 'o', notes->offsets[%#x] = NULL\n",
194 cursor->ops.target.offset);
195 return;
196 }
197
198 if (notes->options->hide_src_code) {
199 from = cursor->al.idx_asm;
200 to = target->idx_asm;
201 } else {
202 from = (u64)cursor->al.idx;
203 to = (u64)target->idx;
204 }
205
206 width = annotation__cycles_width(notes);
207
208 ui_browser__set_color(browser, HE_COLORSET_JUMP_ARROWS);
209 __ui_browser__line_arrow(browser,
210 pcnt_width + 2 + notes->widths.addr + width,
211 from, to);
212
213 diff = is_fused(ab, cursor);
214 if (diff > 0) {
215 ui_browser__mark_fused(browser,
216 pcnt_width + 3 + notes->widths.addr + width,
217 from - diff, diff, to > from);
218 }
219}
220
221static unsigned int annotate_browser__refresh(struct ui_browser *browser)
222{
223 struct annotation *notes = browser__annotation(browser);
224 int ret = ui_browser__list_head_refresh(browser);
225 int pcnt_width = annotation__pcnt_width(notes);
226
227 if (notes->options->jump_arrows)
228 annotate_browser__draw_current_jump(browser);
229
230 ui_browser__set_color(browser, HE_COLORSET_NORMAL);
231 __ui_browser__vline(browser, pcnt_width, 0, browser->rows - 1);
232 return ret;
233}
234
235static double disasm__cmp(struct annotation_line *a, struct annotation_line *b,
236 int percent_type)
237{
238 int i;
239
240 for (i = 0; i < a->data_nr; i++) {
241 if (a->data[i].percent[percent_type] == b->data[i].percent[percent_type])
242 continue;
243 return a->data[i].percent[percent_type] -
244 b->data[i].percent[percent_type];
245 }
246 return 0;
247}
248
249static void disasm_rb_tree__insert(struct annotate_browser *browser,
250 struct annotation_line *al)
251{
252 struct rb_root *root = &browser->entries;
253 struct rb_node **p = &root->rb_node;
254 struct rb_node *parent = NULL;
255 struct annotation_line *l;
256
257 while (*p != NULL) {
258 parent = *p;
259 l = rb_entry(parent, struct annotation_line, rb_node);
260
261 if (disasm__cmp(al, l, browser->opts->percent_type) < 0)
262 p = &(*p)->rb_left;
263 else
264 p = &(*p)->rb_right;
265 }
266 rb_link_node(&al->rb_node, parent, p);
267 rb_insert_color(&al->rb_node, root);
268}
269
270static void annotate_browser__set_top(struct annotate_browser *browser,
271 struct annotation_line *pos, u32 idx)
272{
273 struct annotation *notes = browser__annotation(&browser->b);
274 unsigned back;
275
276 ui_browser__refresh_dimensions(&browser->b);
277 back = browser->b.height / 2;
278 browser->b.top_idx = browser->b.index = idx;
279
280 while (browser->b.top_idx != 0 && back != 0) {
281 pos = list_entry(pos->node.prev, struct annotation_line, node);
282
283 if (annotation_line__filter(pos, notes))
284 continue;
285
286 --browser->b.top_idx;
287 --back;
288 }
289
290 browser->b.top = pos;
291 browser->b.navkeypressed = true;
292}
293
294static void annotate_browser__set_rb_top(struct annotate_browser *browser,
295 struct rb_node *nd)
296{
297 struct annotation *notes = browser__annotation(&browser->b);
298 struct annotation_line * pos = rb_entry(nd, struct annotation_line, rb_node);
299 u32 idx = pos->idx;
300
301 if (notes->options->hide_src_code)
302 idx = pos->idx_asm;
303 annotate_browser__set_top(browser, pos, idx);
304 browser->curr_hot = nd;
305}
306
307static void annotate_browser__calc_percent(struct annotate_browser *browser,
308 struct evsel *evsel)
309{
310 struct map_symbol *ms = browser->b.priv;
311 struct symbol *sym = ms->sym;
312 struct annotation *notes = symbol__annotation(sym);
313 struct disasm_line *pos;
314
315 browser->entries = RB_ROOT;
316
317 mutex_lock(¬es->lock);
318
319 symbol__calc_percent(sym, evsel);
320
321 list_for_each_entry(pos, ¬es->src->source, al.node) {
322 double max_percent = 0.0;
323 int i;
324
325 if (pos->al.offset == -1) {
326 RB_CLEAR_NODE(&pos->al.rb_node);
327 continue;
328 }
329
330 for (i = 0; i < pos->al.data_nr; i++) {
331 double percent;
332
333 percent = annotation_data__percent(&pos->al.data[i],
334 browser->opts->percent_type);
335
336 if (max_percent < percent)
337 max_percent = percent;
338 }
339
340 if (max_percent < 0.01 && pos->al.ipc == 0) {
341 RB_CLEAR_NODE(&pos->al.rb_node);
342 continue;
343 }
344 disasm_rb_tree__insert(browser, &pos->al);
345 }
346 mutex_unlock(¬es->lock);
347
348 browser->curr_hot = rb_last(&browser->entries);
349}
350
351static struct annotation_line *annotate_browser__find_next_asm_line(
352 struct annotate_browser *browser,
353 struct annotation_line *al)
354{
355 struct annotation_line *it = al;
356
357 /* find next asm line */
358 list_for_each_entry_continue(it, browser->b.entries, node) {
359 if (it->idx_asm >= 0)
360 return it;
361 }
362
363 /* no asm line found forwards, try backwards */
364 it = al;
365 list_for_each_entry_continue_reverse(it, browser->b.entries, node) {
366 if (it->idx_asm >= 0)
367 return it;
368 }
369
370 /* There are no asm lines */
371 return NULL;
372}
373
374static bool annotate_browser__toggle_source(struct annotate_browser *browser)
375{
376 struct annotation *notes = browser__annotation(&browser->b);
377 struct annotation_line *al;
378 off_t offset = browser->b.index - browser->b.top_idx;
379
380 browser->b.seek(&browser->b, offset, SEEK_CUR);
381 al = list_entry(browser->b.top, struct annotation_line, node);
382
383 if (notes->options->hide_src_code) {
384 if (al->idx_asm < offset)
385 offset = al->idx;
386
387 browser->b.nr_entries = notes->nr_entries;
388 notes->options->hide_src_code = false;
389 browser->b.seek(&browser->b, -offset, SEEK_CUR);
390 browser->b.top_idx = al->idx - offset;
391 browser->b.index = al->idx;
392 } else {
393 if (al->idx_asm < 0) {
394 /* move cursor to next asm line */
395 al = annotate_browser__find_next_asm_line(browser, al);
396 if (!al) {
397 browser->b.seek(&browser->b, -offset, SEEK_CUR);
398 return false;
399 }
400 }
401
402 if (al->idx_asm < offset)
403 offset = al->idx_asm;
404
405 browser->b.nr_entries = notes->nr_asm_entries;
406 notes->options->hide_src_code = true;
407 browser->b.seek(&browser->b, -offset, SEEK_CUR);
408 browser->b.top_idx = al->idx_asm - offset;
409 browser->b.index = al->idx_asm;
410 }
411
412 return true;
413}
414
415#define SYM_TITLE_MAX_SIZE (PATH_MAX + 64)
416
417static void annotate_browser__show_full_location(struct ui_browser *browser)
418{
419 struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
420 struct disasm_line *cursor = disasm_line(ab->selection);
421 struct annotation_line *al = &cursor->al;
422
423 if (al->offset != -1)
424 ui_helpline__puts("Only available for source code lines.");
425 else if (al->fileloc == NULL)
426 ui_helpline__puts("No source file location.");
427 else {
428 char help_line[SYM_TITLE_MAX_SIZE];
429 sprintf (help_line, "Source file location: %s", al->fileloc);
430 ui_helpline__puts(help_line);
431 }
432}
433
434static void ui_browser__init_asm_mode(struct ui_browser *browser)
435{
436 struct annotation *notes = browser__annotation(browser);
437 ui_browser__reset_index(browser);
438 browser->nr_entries = notes->nr_asm_entries;
439}
440
441static int sym_title(struct symbol *sym, struct map *map, char *title,
442 size_t sz, int percent_type)
443{
444 return snprintf(title, sz, "%s %s [Percent: %s]", sym->name, map->dso->long_name,
445 percent_type_str(percent_type));
446}
447
448/*
449 * This can be called from external jumps, i.e. jumps from one function
450 * to another, like from the kernel's entry_SYSCALL_64 function to the
451 * swapgs_restore_regs_and_return_to_usermode() function.
452 *
453 * So all we check here is that dl->ops.target.sym is set, if it is, just
454 * go to that function and when exiting from its disassembly, come back
455 * to the calling function.
456 */
457static bool annotate_browser__callq(struct annotate_browser *browser,
458 struct evsel *evsel,
459 struct hist_browser_timer *hbt)
460{
461 struct map_symbol *ms = browser->b.priv, target_ms;
462 struct disasm_line *dl = disasm_line(browser->selection);
463 struct annotation *notes;
464 char title[SYM_TITLE_MAX_SIZE];
465
466 if (!dl->ops.target.sym) {
467 ui_helpline__puts("The called function was not found.");
468 return true;
469 }
470
471 notes = symbol__annotation(dl->ops.target.sym);
472 mutex_lock(¬es->lock);
473
474 if (!symbol__hists(dl->ops.target.sym, evsel->evlist->core.nr_entries)) {
475 mutex_unlock(¬es->lock);
476 ui__warning("Not enough memory for annotating '%s' symbol!\n",
477 dl->ops.target.sym->name);
478 return true;
479 }
480
481 target_ms.maps = ms->maps;
482 target_ms.map = ms->map;
483 target_ms.sym = dl->ops.target.sym;
484 mutex_unlock(¬es->lock);
485 symbol__tui_annotate(&target_ms, evsel, hbt, browser->opts);
486 sym_title(ms->sym, ms->map, title, sizeof(title), browser->opts->percent_type);
487 ui_browser__show_title(&browser->b, title);
488 return true;
489}
490
491static
492struct disasm_line *annotate_browser__find_offset(struct annotate_browser *browser,
493 s64 offset, s64 *idx)
494{
495 struct annotation *notes = browser__annotation(&browser->b);
496 struct disasm_line *pos;
497
498 *idx = 0;
499 list_for_each_entry(pos, ¬es->src->source, al.node) {
500 if (pos->al.offset == offset)
501 return pos;
502 if (!annotation_line__filter(&pos->al, notes))
503 ++*idx;
504 }
505
506 return NULL;
507}
508
509static bool annotate_browser__jump(struct annotate_browser *browser,
510 struct evsel *evsel,
511 struct hist_browser_timer *hbt)
512{
513 struct disasm_line *dl = disasm_line(browser->selection);
514 u64 offset;
515 s64 idx;
516
517 if (!ins__is_jump(&dl->ins))
518 return false;
519
520 if (dl->ops.target.outside) {
521 annotate_browser__callq(browser, evsel, hbt);
522 return true;
523 }
524
525 offset = dl->ops.target.offset;
526 dl = annotate_browser__find_offset(browser, offset, &idx);
527 if (dl == NULL) {
528 ui_helpline__printf("Invalid jump offset: %" PRIx64, offset);
529 return true;
530 }
531
532 annotate_browser__set_top(browser, &dl->al, idx);
533
534 return true;
535}
536
537static
538struct annotation_line *annotate_browser__find_string(struct annotate_browser *browser,
539 char *s, s64 *idx)
540{
541 struct annotation *notes = browser__annotation(&browser->b);
542 struct annotation_line *al = browser->selection;
543
544 *idx = browser->b.index;
545 list_for_each_entry_continue(al, ¬es->src->source, node) {
546 if (annotation_line__filter(al, notes))
547 continue;
548
549 ++*idx;
550
551 if (al->line && strstr(al->line, s) != NULL)
552 return al;
553 }
554
555 return NULL;
556}
557
558static bool __annotate_browser__search(struct annotate_browser *browser)
559{
560 struct annotation_line *al;
561 s64 idx;
562
563 al = annotate_browser__find_string(browser, browser->search_bf, &idx);
564 if (al == NULL) {
565 ui_helpline__puts("String not found!");
566 return false;
567 }
568
569 annotate_browser__set_top(browser, al, idx);
570 browser->searching_backwards = false;
571 return true;
572}
573
574static
575struct annotation_line *annotate_browser__find_string_reverse(struct annotate_browser *browser,
576 char *s, s64 *idx)
577{
578 struct annotation *notes = browser__annotation(&browser->b);
579 struct annotation_line *al = browser->selection;
580
581 *idx = browser->b.index;
582 list_for_each_entry_continue_reverse(al, ¬es->src->source, node) {
583 if (annotation_line__filter(al, notes))
584 continue;
585
586 --*idx;
587
588 if (al->line && strstr(al->line, s) != NULL)
589 return al;
590 }
591
592 return NULL;
593}
594
595static bool __annotate_browser__search_reverse(struct annotate_browser *browser)
596{
597 struct annotation_line *al;
598 s64 idx;
599
600 al = annotate_browser__find_string_reverse(browser, browser->search_bf, &idx);
601 if (al == NULL) {
602 ui_helpline__puts("String not found!");
603 return false;
604 }
605
606 annotate_browser__set_top(browser, al, idx);
607 browser->searching_backwards = true;
608 return true;
609}
610
611static bool annotate_browser__search_window(struct annotate_browser *browser,
612 int delay_secs)
613{
614 if (ui_browser__input_window("Search", "String: ", browser->search_bf,
615 "ENTER: OK, ESC: Cancel",
616 delay_secs * 2) != K_ENTER ||
617 !*browser->search_bf)
618 return false;
619
620 return true;
621}
622
623static bool annotate_browser__search(struct annotate_browser *browser, int delay_secs)
624{
625 if (annotate_browser__search_window(browser, delay_secs))
626 return __annotate_browser__search(browser);
627
628 return false;
629}
630
631static bool annotate_browser__continue_search(struct annotate_browser *browser,
632 int delay_secs)
633{
634 if (!*browser->search_bf)
635 return annotate_browser__search(browser, delay_secs);
636
637 return __annotate_browser__search(browser);
638}
639
640static bool annotate_browser__search_reverse(struct annotate_browser *browser,
641 int delay_secs)
642{
643 if (annotate_browser__search_window(browser, delay_secs))
644 return __annotate_browser__search_reverse(browser);
645
646 return false;
647}
648
649static
650bool annotate_browser__continue_search_reverse(struct annotate_browser *browser,
651 int delay_secs)
652{
653 if (!*browser->search_bf)
654 return annotate_browser__search_reverse(browser, delay_secs);
655
656 return __annotate_browser__search_reverse(browser);
657}
658
659static int annotate_browser__show(struct ui_browser *browser, char *title, const char *help)
660{
661 struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
662 struct map_symbol *ms = browser->priv;
663 struct symbol *sym = ms->sym;
664 char symbol_dso[SYM_TITLE_MAX_SIZE];
665
666 if (ui_browser__show(browser, title, help) < 0)
667 return -1;
668
669 sym_title(sym, ms->map, symbol_dso, sizeof(symbol_dso), ab->opts->percent_type);
670
671 ui_browser__gotorc_title(browser, 0, 0);
672 ui_browser__set_color(browser, HE_COLORSET_ROOT);
673 ui_browser__write_nstring(browser, symbol_dso, browser->width + 1);
674 return 0;
675}
676
677static void
678switch_percent_type(struct annotation_options *opts, bool base)
679{
680 switch (opts->percent_type) {
681 case PERCENT_HITS_LOCAL:
682 if (base)
683 opts->percent_type = PERCENT_PERIOD_LOCAL;
684 else
685 opts->percent_type = PERCENT_HITS_GLOBAL;
686 break;
687 case PERCENT_HITS_GLOBAL:
688 if (base)
689 opts->percent_type = PERCENT_PERIOD_GLOBAL;
690 else
691 opts->percent_type = PERCENT_HITS_LOCAL;
692 break;
693 case PERCENT_PERIOD_LOCAL:
694 if (base)
695 opts->percent_type = PERCENT_HITS_LOCAL;
696 else
697 opts->percent_type = PERCENT_PERIOD_GLOBAL;
698 break;
699 case PERCENT_PERIOD_GLOBAL:
700 if (base)
701 opts->percent_type = PERCENT_HITS_GLOBAL;
702 else
703 opts->percent_type = PERCENT_PERIOD_LOCAL;
704 break;
705 default:
706 WARN_ON(1);
707 }
708}
709
710static int annotate_browser__run(struct annotate_browser *browser,
711 struct evsel *evsel,
712 struct hist_browser_timer *hbt)
713{
714 struct rb_node *nd = NULL;
715 struct hists *hists = evsel__hists(evsel);
716 struct map_symbol *ms = browser->b.priv;
717 struct symbol *sym = ms->sym;
718 struct annotation *notes = symbol__annotation(ms->sym);
719 const char *help = "Press 'h' for help on key bindings";
720 int delay_secs = hbt ? hbt->refresh : 0;
721 char title[256];
722 int key;
723
724 hists__scnprintf_title(hists, title, sizeof(title));
725 if (annotate_browser__show(&browser->b, title, help) < 0)
726 return -1;
727
728 annotate_browser__calc_percent(browser, evsel);
729
730 if (browser->curr_hot) {
731 annotate_browser__set_rb_top(browser, browser->curr_hot);
732 browser->b.navkeypressed = false;
733 }
734
735 nd = browser->curr_hot;
736
737 while (1) {
738 key = ui_browser__run(&browser->b, delay_secs);
739
740 if (delay_secs != 0) {
741 annotate_browser__calc_percent(browser, evsel);
742 /*
743 * Current line focus got out of the list of most active
744 * lines, NULL it so that if TAB|UNTAB is pressed, we
745 * move to curr_hot (current hottest line).
746 */
747 if (nd != NULL && RB_EMPTY_NODE(nd))
748 nd = NULL;
749 }
750
751 switch (key) {
752 case K_TIMER:
753 if (hbt)
754 hbt->timer(hbt->arg);
755
756 if (delay_secs != 0) {
757 symbol__annotate_decay_histogram(sym, evsel->core.idx);
758 hists__scnprintf_title(hists, title, sizeof(title));
759 annotate_browser__show(&browser->b, title, help);
760 }
761 continue;
762 case K_TAB:
763 if (nd != NULL) {
764 nd = rb_prev(nd);
765 if (nd == NULL)
766 nd = rb_last(&browser->entries);
767 } else
768 nd = browser->curr_hot;
769 break;
770 case K_UNTAB:
771 if (nd != NULL) {
772 nd = rb_next(nd);
773 if (nd == NULL)
774 nd = rb_first(&browser->entries);
775 } else
776 nd = browser->curr_hot;
777 break;
778 case K_F1:
779 case 'h':
780 ui_browser__help_window(&browser->b,
781 "UP/DOWN/PGUP\n"
782 "PGDN/SPACE Navigate\n"
783 "q/ESC/CTRL+C Exit\n\n"
784 "ENTER Go to target\n"
785 "ESC Exit\n"
786 "H Go to hottest instruction\n"
787 "TAB/shift+TAB Cycle thru hottest instructions\n"
788 "j Toggle showing jump to target arrows\n"
789 "J Toggle showing number of jump sources on targets\n"
790 "n Search next string\n"
791 "o Toggle disassembler output/simplified view\n"
792 "O Bump offset level (jump targets -> +call -> all -> cycle thru)\n"
793 "s Toggle source code view\n"
794 "t Circulate percent, total period, samples view\n"
795 "c Show min/max cycle\n"
796 "/ Search string\n"
797 "k Toggle line numbers\n"
798 "l Show full source file location\n"
799 "P Print to [symbol_name].annotation file.\n"
800 "r Run available scripts\n"
801 "p Toggle percent type [local/global]\n"
802 "b Toggle percent base [period/hits]\n"
803 "? Search string backwards\n"
804 "f Toggle showing offsets to full address\n");
805 continue;
806 case 'r':
807 script_browse(NULL, NULL);
808 annotate_browser__show(&browser->b, title, help);
809 continue;
810 case 'k':
811 notes->options->show_linenr = !notes->options->show_linenr;
812 continue;
813 case 'l':
814 annotate_browser__show_full_location (&browser->b);
815 continue;
816 case 'H':
817 nd = browser->curr_hot;
818 break;
819 case 's':
820 if (annotate_browser__toggle_source(browser))
821 ui_helpline__puts(help);
822 continue;
823 case 'o':
824 notes->options->use_offset = !notes->options->use_offset;
825 annotation__update_column_widths(notes);
826 continue;
827 case 'O':
828 if (++notes->options->offset_level > ANNOTATION__MAX_OFFSET_LEVEL)
829 notes->options->offset_level = ANNOTATION__MIN_OFFSET_LEVEL;
830 continue;
831 case 'j':
832 notes->options->jump_arrows = !notes->options->jump_arrows;
833 continue;
834 case 'J':
835 notes->options->show_nr_jumps = !notes->options->show_nr_jumps;
836 annotation__update_column_widths(notes);
837 continue;
838 case '/':
839 if (annotate_browser__search(browser, delay_secs)) {
840show_help:
841 ui_helpline__puts(help);
842 }
843 continue;
844 case 'n':
845 if (browser->searching_backwards ?
846 annotate_browser__continue_search_reverse(browser, delay_secs) :
847 annotate_browser__continue_search(browser, delay_secs))
848 goto show_help;
849 continue;
850 case '?':
851 if (annotate_browser__search_reverse(browser, delay_secs))
852 goto show_help;
853 continue;
854 case 'D': {
855 static int seq;
856 ui_helpline__pop();
857 ui_helpline__fpush("%d: nr_ent=%d, height=%d, idx=%d, top_idx=%d, nr_asm_entries=%d",
858 seq++, browser->b.nr_entries,
859 browser->b.height,
860 browser->b.index,
861 browser->b.top_idx,
862 notes->nr_asm_entries);
863 }
864 continue;
865 case K_ENTER:
866 case K_RIGHT:
867 {
868 struct disasm_line *dl = disasm_line(browser->selection);
869
870 if (browser->selection == NULL)
871 ui_helpline__puts("Huh? No selection. Report to linux-kernel@vger.kernel.org");
872 else if (browser->selection->offset == -1)
873 ui_helpline__puts("Actions are only available for assembly lines.");
874 else if (!dl->ins.ops)
875 goto show_sup_ins;
876 else if (ins__is_ret(&dl->ins))
877 goto out;
878 else if (!(annotate_browser__jump(browser, evsel, hbt) ||
879 annotate_browser__callq(browser, evsel, hbt))) {
880show_sup_ins:
881 ui_helpline__puts("Actions are only available for function call/return & jump/branch instructions.");
882 }
883 continue;
884 }
885 case 'P':
886 map_symbol__annotation_dump(ms, evsel, browser->opts);
887 continue;
888 case 't':
889 if (symbol_conf.show_total_period) {
890 symbol_conf.show_total_period = false;
891 symbol_conf.show_nr_samples = true;
892 } else if (symbol_conf.show_nr_samples)
893 symbol_conf.show_nr_samples = false;
894 else
895 symbol_conf.show_total_period = true;
896 annotation__update_column_widths(notes);
897 continue;
898 case 'c':
899 if (notes->options->show_minmax_cycle)
900 notes->options->show_minmax_cycle = false;
901 else
902 notes->options->show_minmax_cycle = true;
903 annotation__update_column_widths(notes);
904 continue;
905 case 'p':
906 case 'b':
907 switch_percent_type(browser->opts, key == 'b');
908 hists__scnprintf_title(hists, title, sizeof(title));
909 annotate_browser__show(&browser->b, title, help);
910 continue;
911 case 'f':
912 annotation__toggle_full_addr(notes, ms);
913 continue;
914 case K_LEFT:
915 case K_ESC:
916 case 'q':
917 case CTRL('c'):
918 goto out;
919 default:
920 continue;
921 }
922
923 if (nd != NULL)
924 annotate_browser__set_rb_top(browser, nd);
925 }
926out:
927 ui_browser__hide(&browser->b);
928 return key;
929}
930
931int map_symbol__tui_annotate(struct map_symbol *ms, struct evsel *evsel,
932 struct hist_browser_timer *hbt,
933 struct annotation_options *opts)
934{
935 return symbol__tui_annotate(ms, evsel, hbt, opts);
936}
937
938int hist_entry__tui_annotate(struct hist_entry *he, struct evsel *evsel,
939 struct hist_browser_timer *hbt,
940 struct annotation_options *opts)
941{
942 /* reset abort key so that it can get Ctrl-C as a key */
943 SLang_reset_tty();
944 SLang_init_tty(0, 0, 0);
945
946 return map_symbol__tui_annotate(&he->ms, evsel, hbt, opts);
947}
948
949int symbol__tui_annotate(struct map_symbol *ms, struct evsel *evsel,
950 struct hist_browser_timer *hbt,
951 struct annotation_options *opts)
952{
953 struct symbol *sym = ms->sym;
954 struct annotation *notes = symbol__annotation(sym);
955 struct annotate_browser browser = {
956 .b = {
957 .refresh = annotate_browser__refresh,
958 .seek = ui_browser__list_head_seek,
959 .write = annotate_browser__write,
960 .filter = disasm_line__filter,
961 .extra_title_lines = 1, /* for hists__scnprintf_title() */
962 .priv = ms,
963 .use_navkeypressed = true,
964 },
965 .opts = opts,
966 };
967 int ret = -1, err;
968 int not_annotated = list_empty(¬es->src->source);
969
970 if (sym == NULL)
971 return -1;
972
973 if (ms->map->dso->annotate_warned)
974 return -1;
975
976 if (not_annotated) {
977 err = symbol__annotate2(ms, evsel, opts, &browser.arch);
978 if (err) {
979 char msg[BUFSIZ];
980 ms->map->dso->annotate_warned = true;
981 symbol__strerror_disassemble(ms, err, msg, sizeof(msg));
982 ui__error("Couldn't annotate %s:\n%s", sym->name, msg);
983 goto out_free_offsets;
984 }
985 }
986
987 ui_helpline__push("Press ESC to exit");
988
989 browser.b.width = notes->max_line_len;
990 browser.b.nr_entries = notes->nr_entries;
991 browser.b.entries = ¬es->src->source,
992 browser.b.width += 18; /* Percentage */
993
994 if (notes->options->hide_src_code)
995 ui_browser__init_asm_mode(&browser.b);
996
997 ret = annotate_browser__run(&browser, evsel, hbt);
998
999 if(not_annotated)
1000 annotated_source__purge(notes->src);
1001
1002out_free_offsets:
1003 if(not_annotated)
1004 zfree(¬es->offsets);
1005 return ret;
1006}