summaryrefslogtreecommitdiffstats
path: root/tools/perf/ui/browsers/annotate.c
blob: 4deea6aaf9274f65887997fcd175fe9fd3bfc459 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
#include "../../util/util.h"
#include "../browser.h"
#include "../helpline.h"
#include "../libslang.h"
#include "../ui.h"
#include "../util.h"
#include "../../util/annotate.h"
#include "../../util/hist.h"
#include "../../util/sort.h"
#include "../../util/symbol.h"
#include <pthread.h>
#include <newt.h>

struct browser_disasm_line {
	struct rb_node	rb_node;
	double		percent;
	u32		idx;
	int		idx_asm;
	int		jump_sources;
};

static struct annotate_browser_opt {
	bool hide_src_code,
	     use_offset,
	     jump_arrows,
	     show_nr_jumps;
} annotate_browser__opts = {
	.use_offset	= true,
	.jump_arrows	= true,
};

struct annotate_browser {
	struct ui_browser b;
	struct rb_root	  entries;
	struct rb_node	  *curr_hot;
	struct disasm_line	  *selection;
	struct disasm_line  **offsets;
	u64		    start;
	int		    nr_asm_entries;
	int		    nr_entries;
	int		    max_jump_sources;
	int		    nr_jumps;
	bool		    searching_backwards;
	u8		    addr_width;
	u8		    jumps_width;
	u8		    target_width;
	u8		    min_addr_width;
	u8		    max_addr_width;
	char		    search_bf[128];
};

static inline struct browser_disasm_line *disasm_line__browser(struct disasm_line *dl)
{
	return (struct browser_disasm_line *)(dl + 1);
}

static bool disasm_line__filter(struct ui_browser *browser __used, void *entry)
{
	if (annotate_browser__opts.hide_src_code) {
		struct disasm_line *dl = list_entry(entry, struct disasm_line, node);
		return dl->offset == -1;
	}

	return false;
}

static int annotate_browser__jumps_percent_color(struct annotate_browser *browser,
						 int nr, bool current)
{
	if (current && (!browser->b.use_navkeypressed || browser->b.navkeypressed))
		return HE_COLORSET_SELECTED;
	if (nr == browser->max_jump_sources)
		return HE_COLORSET_TOP;
	if (nr > 1)
		return HE_COLORSET_MEDIUM;
	return HE_COLORSET_NORMAL;
}

static int annotate_browser__set_jumps_percent_color(struct annotate_browser *browser,
						     int nr, bool current)
{
	 int color = annotate_browser__jumps_percent_color(browser, nr, current);
	 return ui_browser__set_color(&browser->b, color);
}

static void annotate_browser__write(struct ui_browser *browser, void *entry, int row)
{
	struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
	struct disasm_line *dl = list_entry(entry, struct disasm_line, node);
	struct browser_disasm_line *bdl = disasm_line__browser(dl);
	bool current_entry = ui_browser__is_current_entry(browser, row);
	bool change_color = (!annotate_browser__opts.hide_src_code &&
			     (!current_entry || (browser->use_navkeypressed &&
					         !browser->navkeypressed)));
	int width = browser->width, printed;
	char bf[256];

	if (dl->offset != -1 && bdl->percent != 0.0) {
		ui_browser__set_percent_color(browser, bdl->percent, current_entry);
		slsmg_printf("%6.2f ", bdl->percent);
	} else {
		ui_browser__set_percent_color(browser, 0, current_entry);
		slsmg_write_nstring(" ", 7);
	}

	SLsmg_write_char(' ');

	/* The scroll bar isn't being used */
	if (!browser->navkeypressed)
		width += 1;

	if (!*dl->line)
		slsmg_write_nstring(" ", width - 7);
	else if (dl->offset == -1) {
		printed = scnprintf(bf, sizeof(bf), "%*s  ",
				    ab->addr_width, " ");
		slsmg_write_nstring(bf, printed);
		slsmg_write_nstring(dl->line, width - printed - 6);
	} else {
		u64 addr = dl->offset;
		int color = -1;

		if (!annotate_browser__opts.use_offset)
			addr += ab->start;

		if (!annotate_browser__opts.use_offset) {
			printed = scnprintf(bf, sizeof(bf), "%" PRIx64 ": ", addr);
		} else {
			if (bdl->jump_sources) {
				if (annotate_browser__opts.show_nr_jumps) {
					int prev;
					printed = scnprintf(bf, sizeof(bf), "%*d ",
							    ab->jumps_width,
							    bdl->jump_sources);
					prev = annotate_browser__set_jumps_percent_color(ab, bdl->jump_sources,
											 current_entry);
					slsmg_write_nstring(bf, printed);
					ui_browser__set_color(browser, prev);
				}

				printed = scnprintf(bf, sizeof(bf), "%*" PRIx64 ": ",
						    ab->target_width, addr);
			} else {
				printed = scnprintf(bf, sizeof(bf), "%*s  ",
						    ab->addr_width, " ");
			}
		}

		if (change_color)
			color = ui_browser__set_color(browser, HE_COLORSET_ADDR);
		slsmg_write_nstring(bf, printed);
		if (change_color)
			ui_browser__set_color(browser, color);
		if (dl->ins && dl->ins->ops->scnprintf) {
			if (ins__is_jump(dl->ins)) {
				bool fwd = dl->ops.target.offset > (u64)dl->offset;

				ui_browser__write_graph(browser, fwd ? SLSMG_DARROW_CHAR :
								    SLSMG_UARROW_CHAR);
				SLsmg_write_char(' ');
			} else if (ins__is_call(dl->ins)) {
				ui_browser__write_graph(browser, SLSMG_RARROW_CHAR);
				SLsmg_write_char(' ');
			} else {
				slsmg_write_nstring(" ", 2);
			}
		} else {
			if (strcmp(dl->name, "retq")) {
				slsmg_write_nstring(" ", 2);
			} else {
				ui_browser__write_graph(browser, SLSMG_LARROW_CHAR);
				SLsmg_write_char(' ');
			}
		}

		disasm_line__scnprintf(dl, bf, sizeof(bf), !annotate_browser__opts.use_offset);
		slsmg_write_nstring(bf, width - 10 - printed);
	}

	if (current_entry)
		ab->selection = dl;
}

static void annotate_browser__draw_current_jump(struct ui_browser *browser)
{
	struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
	struct disasm_line *cursor = ab->selection, *target;
	struct browser_disasm_line *btarget, *bcursor;
	unsigned int from, to;

	if (!cursor || !cursor->ins || !ins__is_jump(cursor->ins) ||
	    !disasm_line__has_offset(cursor))
		return;

	target = ab->offsets[cursor->ops.target.offset];
	if (!target)
		return;

	bcursor = disasm_line__browser(cursor);
	btarget = disasm_line__browser(target);

	if (annotate_browser__opts.hide_src_code) {
		from = bcursor->idx_asm;
		to = btarget->idx_asm;
	} else {
		from = (u64)bcursor->idx;
		to = (u64)btarget->idx;
	}

	ui_browser__set_color(browser, HE_COLORSET_CODE);
	__ui_browser__line_arrow(browser, 9 + ab->addr_width, from, to);
}

static unsigned int annotate_browser__refresh(struct ui_browser *browser)
{
	int ret = ui_browser__list_head_refresh(browser);

	if (annotate_browser__opts.jump_arrows)
		annotate_browser__draw_current_jump(browser);

	ui_browser__set_color(browser, HE_COLORSET_NORMAL);
	__ui_browser__vline(browser, 7, 0, browser->height - 1);
	return ret;
}

static double disasm_line__calc_percent(struct disasm_line *dl, struct symbol *sym, int evidx)
{
	double percent = 0.0;

	if (dl->offset != -1) {
		int len = sym->end - sym->start;
		unsigned int hits = 0;
		struct annotation *notes = symbol__annotation(sym);
		struct source_line *src_line = notes->src->lines;
		struct sym_hist *h = annotation__histogram(notes, evidx);
		s64 offset = dl->offset;
		struct disasm_line *next;

		next = disasm__get_next_ip_line(&notes->src->source, dl);
		while (offset < (s64)len &&
		       (next == NULL || offset < next->offset)) {
			if (src_line) {
				percent += src_line[offset].percent;
			} else
				hits += h->addr[offset];

			++offset;
		}
		/*
 		 * If the percentage wasn't already calculated in
 		 * symbol__get_source_line, do it now:
 		 */
		if (src_line == NULL && h->sum)
			percent = 100.0 * hits / h->sum;
	}

	return percent;
}

static void disasm_rb_tree__insert(struct rb_root *root, struct browser_disasm_line *bdl)
{
	struct rb_node **p = &root->rb_node;
	struct rb_node *parent = NULL;
	struct browser_disasm_line *l;

	while (*p != NULL) {
		parent = *p;
		l = rb_entry(parent, struct browser_disasm_line, rb_node);
		if (bdl->percent < l->percent)
			p = &(*p)->rb_left;
		else
			p = &(*p)->rb_right;
	}
	rb_link_node(&bdl->rb_node, parent, p);
	rb_insert_color(&bdl->rb_node, root);
}

static void annotate_browser__set_top(struct annotate_browser *browser,
				      struct disasm_line *pos, u32 idx)
{
	unsigned back;

	ui_browser__refresh_dimensions(&browser->b);
	back = browser->b.height / 2;
	browser->b.top_idx = browser->b.index = idx;

	while (browser->b.top_idx != 0 && back != 0) {
		pos = list_entry(pos->node.prev, struct disasm_line, node);

		if (disasm_line__filter(&browser->b, &pos->node))
			continue;

		--browser->b.top_idx;
		--back;
	}

	browser->b.top = pos;
	browser->b.navkeypressed = true;
}

static void annotate_browser__set_rb_top(struct annotate_browser *browser,
					 struct rb_node *nd)
{
	struct browser_disasm_line *bpos;
	struct disasm_line *pos;
	u32 idx;

	bpos = rb_entry(nd, struct browser_disasm_line, rb_node);
	pos = ((struct disasm_line *)bpos) - 1;
	idx = bpos->idx;
	if (annotate_browser__opts.hide_src_code)
		idx = bpos->idx_asm;
	annotate_browser__set_top(browser, pos, idx);
	browser->curr_hot = nd;
}

static void annotate_browser__calc_percent(struct annotate_browser *browser,
					   int evidx)
{
	struct map_symbol *ms = browser->b.priv;
	struct symbol *sym = ms->sym;
	struct annotation *notes = symbol__annotation(sym);
	struct disasm_line *pos;

	browser->entries = RB_ROOT;

	pthread_mutex_lock(&notes->lock);

	list_for_each_entry(pos, &notes->src->source, node) {
		struct browser_disasm_line *bpos = disasm_line__browser(pos);
		bpos->percent = disasm_line__calc_percent(pos, sym, evidx);
		if (bpos->percent < 0.01) {
			RB_CLEAR_NODE(&bpos->rb_node);
			continue;
		}
		disasm_rb_tree__insert(&browser->entries, bpos);
	}
	pthread_mutex_unlock(&notes->lock);

	browser->curr_hot = rb_last(&browser->entries);
}

static bool annotate_browser__toggle_source(struct annotate_browser *browser)
{
	struct disasm_line *dl;
	struct browser_disasm_line *bdl;
	off_t offset = browser->b.index - browser->b.top_idx;

	browser->b.seek(&browser->b, offset, SEEK_CUR);
	dl = list_entry(browser->b.top, struct disasm_line, node);
	bdl = disasm_line__browser(dl);

	if (annotate_browser__opts.hide_src_code) {
		if (bdl->idx_asm < offset)
			offset = bdl->idx;

		browser->b.nr_entries = browser->nr_entries;
		annotate_browser__opts.hide_src_code = false;
		browser->b.seek(&browser->b, -offset, SEEK_CUR);
		browser->b.top_idx = bdl->idx - offset;
		browser->b.index = bdl->idx;
	} else {
		if (bdl->idx_asm < 0) {
			ui_helpline__puts("Only available for assembly lines.");
			browser->b.seek(&browser->b, -offset, SEEK_CUR);
			return false;
		}

		if (bdl->idx_asm < offset)
			offset = bdl->idx_asm;

		browser->b.nr_entries = browser->nr_asm_entries;
		annotate_browser__opts.hide_src_code = true;
		browser->b.seek(&browser->b, -offset, SEEK_CUR);
		browser->b.top_idx = bdl->idx_asm - offset;
		browser->b.index = bdl->idx_asm;
	}

	return true;
}

static void annotate_browser__init_asm_mode(struct annotate_browser *browser)
{
	ui_browser__reset_index(&browser->b);
	browser->b.nr_entries = browser->nr_asm_entries;
}

static bool annotate_browser__callq(struct annotate_browser *browser,
				    int evidx, void (*timer)(void *arg),
				    void *arg, int delay_secs)
{
	struct map_symbol *ms = browser->b.priv;
	struct disasm_line *dl = browser->selection;
	struct symbol *sym = ms->sym;
	struct annotation *notes;
	struct symbol *target;
	u64 ip;

	if (!ins__is_call(dl->ins))
		return false;

	ip = ms->map->map_ip(ms->map, dl->ops.target.addr);
	target = map__find_symbol(ms->map, ip, NULL);
	if (target == NULL) {
		ui_helpline__puts("The called function was not found.");
		return true;
	}

	notes = symbol__annotation(target);
	pthread_mutex_lock(&notes->lock);

	if (notes->src == NULL && symbol__alloc_hist(target) < 0) {
		pthread_mutex_unlock(&notes->lock);
		ui__warning("Not enough memory for annotating '%s' symbol!\n",
			    target->name);
		return true;
	}

	pthread_mutex_unlock(&notes->lock);
	symbol__tui_annotate(target, ms->map, evidx, timer, arg, delay_secs);
	ui_browser__show_title(&browser->b, sym->name);
	return true;
}

static
struct disasm_line *annotate_browser__find_offset(struct annotate_browser *browser,
					  s64 offset, s64 *idx)
{
	struct map_symbol *ms = browser->b.priv;
	struct symbol *sym = ms->sym;
	struct annotation *notes = symbol__annotation(sym);
	struct disasm_line *pos;

	*idx = 0;
	list_for_each_entry(pos, &notes->src->source, node) {
		if (pos->offset == offset)
			return pos;
		if (!disasm_line__filter(&browser->b, &pos->node))
			++*idx;
	}

	return NULL;
}

static bool annotate_browser__jump(struct annotate_browser *browser)
{
	struct disasm_line *dl = browser->selection;
	s64 idx;

	if (!ins__is_jump(dl->ins))
		return false;

	dl = annotate_browser__find_offset(browser, dl->ops.target.offset, &idx);
	if (dl == NULL) {
		ui_helpline__puts("Invallid jump offset");
		return true;
	}

	annotate_browser__set_top(browser, dl, idx);
	
	return true;
}

static
struct disasm_line *annotate_browser__find_string(struct annotate_browser *browser,
					  char *s, s64 *idx)
{
	struct map_symbol *ms = browser->b.priv;
	struct symbol *sym = ms->sym;
	struct annotation *notes = symbol__annotation(sym);
	struct disasm_line *pos = browser->selection;

	*idx = browser->b.index;
	list_for_each_entry_continue(pos, &notes->src->source, node) {
		if (disasm_line__filter(&browser->b, &pos->node))
			continue;

		++*idx;

		if (pos->line && strstr(pos->line, s) != NULL)
			return pos;
	}

	return NULL;
}

static bool __annotate_browser__search(struct annotate_browser *browser)
{
	struct disasm_line *dl;
	s64 idx;

	dl = annotate_browser__find_string(browser, browser->search_bf, &idx);
	if (dl == NULL) {
		ui_helpline__puts("String not found!");
		return false;
	}

	annotate_browser__set_top(browser, dl, idx);
	browser->searching_backwards = false;
	return true;
}

static
struct disasm_line *annotate_browser__find_string_reverse(struct annotate_browser *browser,
						  char *s, s64 *idx)
{
	struct map_symbol *ms = browser->b.priv;
	struct symbol *sym = ms->sym;
	struct annotation *notes = symbol__annotation(sym);
	struct disasm_line *pos = browser->selection;

	*idx = browser->b.index;
	list_for_each_entry_continue_reverse(pos, &notes->src->source, node) {
		if (disasm_line__filter(&browser->b, &pos->node))
			continue;

		--*idx;

		if (pos->line && strstr(pos->line, s) != NULL)
			return pos;
	}

	return NULL;
}

static bool __annotate_browser__search_reverse(struct annotate_browser *browser)
{
	struct disasm_line *dl;
	s64 idx;

	dl = annotate_browser__find_string_reverse(browser, browser->search_bf, &idx);
	if (dl == NULL) {
		ui_helpline__puts("String not found!");
		return false;
	}

	annotate_browser__set_top(browser, dl, idx);
	browser->searching_backwards = true;
	return true;
}

static bool annotate_browser__search_window(struct annotate_browser *browser,
					    int delay_secs)
{
	if (ui_browser__input_window("Search", "String: ", browser->search_bf,
				     "ENTER: OK, ESC: Cancel",
				     delay_secs * 2) != K_ENTER ||
	    !*browser->search_bf)
		return false;

	return true;
}

static bool annotate_browser__search(struct annotate_browser *browser, int delay_secs)
{
	if (annotate_browser__search_window(browser, delay_secs))
		return __annotate_browser__search(browser);

	return false;
}

static bool annotate_browser__continue_search(struct annotate_browser *browser,
					      int delay_secs)
{
	if (!*browser->search_bf)
		return annotate_browser__search(browser, delay_secs);

	return __annotate_browser__search(browser);
}

static bool annotate_browser__search_reverse(struct annotate_browser *browser,
					   int delay_secs)
{
	if (annotate_browser__search_window(browser, delay_secs))
		return __annotate_browser__search_reverse(browser);

	return false;
}

static
bool annotate_browser__continue_search_reverse(struct annotate_browser *browser,
					       int delay_secs)
{
	if (!*browser->search_bf)
		return annotate_browser__search_reverse(browser, delay_secs);

	return __annotate_browser__search_reverse(browser);
}

static void annotate_browser__update_addr_width(struct annotate_browser *browser)
{
	if (annotate_browser__opts.use_offset)
		browser->target_width = browser->min_addr_width;
	else
		browser->target_width = browser->max_addr_width;

	browser->addr_width = browser->target_width;

	if (annotate_browser__opts.show_nr_jumps)
		browser->addr_width += browser->jumps_width + 1;
}

static int annotate_browser__run(struct annotate_browser *browser, int evidx,
				 void(*timer)(void *arg),
				 void *arg, int delay_secs)
{
	struct rb_node *nd = NULL;
	struct map_symbol *ms = browser->b.priv;
	struct symbol *sym = ms->sym;
	const char *help = "Press 'h' for help on key bindings";
	int key;

	if (ui_browser__show(&browser->b, sym->name, help) < 0)
		return -1;

	annotate_browser__calc_percent(browser, evidx);

	if (browser->curr_hot) {
		annotate_browser__set_rb_top(browser, browser->curr_hot);
		browser->b.navkeypressed = false;
	}

	nd = browser->curr_hot;

	while (1) {
		key = ui_browser__run(&browser->b, delay_secs);

		if (delay_secs != 0) {
			annotate_browser__calc_percent(browser, evidx);
			/*
			 * Current line focus got out of the list of most active
			 * lines, NULL it so that if TAB|UNTAB is pressed, we
			 * move to curr_hot (current hottest line).
			 */
			if (nd != NULL && RB_EMPTY_NODE(nd))
				nd = NULL;
		}

		switch (key) {
		case K_TIMER:
			if (timer != NULL)
				timer(arg);

			if (delay_secs != 0)
				symbol__annotate_decay_histogram(sym, evidx);
			continue;
		case K_TAB:
			if (nd != NULL) {
				nd = rb_prev(nd);
				if (nd == NULL)
					nd = rb_last(&browser->entries);
			} else
				nd = browser->curr_hot;
			break;
		case K_UNTAB:
			if (nd != NULL)
				nd = rb_next(nd);
				if (nd == NULL)
					nd = rb_first(&browser->entries);
			else
				nd = browser->curr_hot;
			break;
		case K_F1:
		case 'h':
			ui_browser__help_window(&browser->b,
		"UP/DOWN/PGUP\n"
		"PGDN/SPACE    Navigate\n"
		"q/ESC/CTRL+C  Exit\n\n"
		"->            Go to target\n"
		"<-            Exit\n"
		"h             Cycle thru hottest instructions\n"
		"j             Toggle showing jump to target arrows\n"
		"J             Toggle showing number of jump sources on targets\n"
		"n             Search next string\n"
		"o             Toggle disassembler output/simplified view\n"
		"s             Toggle source code view\n"
		"/             Search string\n"
		"?             Search previous string\n");
			continue;
		case 'H':
			nd = browser->curr_hot;
			break;
		case 's':
			if (annotate_browser__toggle_source(browser))
				ui_helpline__puts(help);
			continue;
		case 'o':
			annotate_browser__opts.use_offset = !annotate_browser__opts.use_offset;
			annotate_browser__update_addr_width(browser);
			continue;
		case 'j':
			annotate_browser__opts.jump_arrows = !annotate_browser__opts.jump_arrows;
			continue;
		case 'J':
			annotate_browser__opts.show_nr_jumps = !annotate_browser__opts.show_nr_jumps;
			annotate_browser__update_addr_width(browser);
			continue;
		case '/':
			if (annotate_browser__search(browser, delay_secs)) {
show_help:
				ui_helpline__puts(help);
			}
			continue;
		case 'n':
			if (browser->searching_backwards ?
			    annotate_browser__continue_search_reverse(browser, delay_secs) :
			    annotate_browser__continue_search(browser, delay_secs))
				goto show_help;
			continue;
		case '?':
			if (annotate_browser__search_reverse(browser, delay_secs))
				goto show_help;
			continue;
		case 'D': {
			static int seq;
			ui_helpline__pop();
			ui_helpline__fpush("%d: nr_ent=%d, height=%d, idx=%d, top_idx=%d, nr_asm_entries=%d",
					   seq++, browser->b.nr_entries,
					   browser->b.height,
					   browser->b.index,
					   browser->b.top_idx,
					   browser->nr_asm_entries);
		}
			continue;
		case K_ENTER:
		case K_RIGHT:
			if (browser->selection == NULL)
				ui_helpline__puts("Huh? No selection. Report to linux-kernel@vger.kernel.org");
			else if (browser->selection->offset == -1)
				ui_helpline__puts("Actions are only available for assembly lines.");
			else if (!browser->selection->ins) {
				if (strcmp(browser->selection->name, "retq"))
					goto show_sup_ins;
				goto out;
			} else if (!(annotate_browser__jump(browser) ||
				     annotate_browser__callq(browser, evidx, timer, arg, delay_secs))) {
show_sup_ins:
				ui_helpline__puts("Actions are only available for 'callq', 'retq' & jump instructions.");
			}
			continue;
		case K_LEFT:
		case K_ESC:
		case 'q':
		case CTRL('c'):
			goto out;
		default:
			continue;
		}

		if (nd != NULL)
			annotate_browser__set_rb_top(browser, nd);
	}
out:
	ui_browser__hide(&browser->b);
	return key;
}

int hist_entry__tui_annotate(struct hist_entry *he, int evidx,
			     void(*timer)(void *arg), void *arg, int delay_secs)
{
	return symbol__tui_annotate(he->ms.sym, he->ms.map, evidx,
				    timer, arg, delay_secs);
}

static void annotate_browser__mark_jump_targets(struct annotate_browser *browser,
						size_t size)
{
	u64 offset;

	for (offset = 0; offset < size; ++offset) {
		struct disasm_line *dl = browser->offsets[offset], *dlt;
		struct browser_disasm_line *bdlt;

		if (!dl || !dl->ins || !ins__is_jump(dl->ins) ||
		    !disasm_line__has_offset(dl))
			continue;

		if (dl->ops.target.offset >= size) {
			ui__error("jump to after symbol!\n"
				  "size: %zx, jump target: %" PRIx64,
				  size, dl->ops.target.offset);
			continue;
		}

		dlt = browser->offsets[dl->ops.target.offset];
		/*
 		 * FIXME: Oops, no jump target? Buggy disassembler? Or do we
 		 * have to adjust to the previous offset?
 		 */
		if (dlt == NULL)
			continue;

		bdlt = disasm_line__browser(dlt);
		if (++bdlt->jump_sources > browser->max_jump_sources)
			browser->max_jump_sources = bdlt->jump_sources;

		++browser->nr_jumps;
	}
		
}

static inline int width_jumps(int n)
{
	if (n >= 100)
		return 5;
	if (n / 10)
		return 2;
	return 1;
}

int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,
			 void(*timer)(void *arg), void *arg,
			 int delay_secs)
{
	struct disasm_line *pos, *n;
	struct annotation *notes;
	const size_t size = symbol__size(sym);
	struct map_symbol ms = {
		.map = map,
		.sym = sym,
	};
	struct annotate_browser browser = {
		.b = {
			.refresh = annotate_browser__refresh,
			.seek	 = ui_browser__list_head_seek,
			.write	 = annotate_browser__write,
			.filter  = disasm_line__filter,
			.priv	 = &ms,
			.use_navkeypressed = true,
		},
	};
	int ret = -1;

	if (sym == NULL)
		return -1;

	if (map->dso->annotate_warned)
		return -1;

	browser.offsets = zalloc(size * sizeof(struct disasm_line *));
	if (browser.offsets == NULL) {
		ui__error("Not enough memory!");
		return -1;
	}

	if (symbol__annotate(sym, map, sizeof(struct browser_disasm_line)) < 0) {
		ui__error("%s", ui_helpline__last_msg);
		goto out_free_offsets;
	}

	ui_helpline__push("Press <- or ESC to exit");

	notes = symbol__annotation(sym);
	browser.start = map__rip_2objdump(map, sym->start);

	list_for_each_entry(pos, &notes->src->source, node) {
		struct browser_disasm_line *bpos;
		size_t line_len = strlen(pos->line);

		if (browser.b.width < line_len)
			browser.b.width = line_len;
		bpos = disasm_line__browser(pos);
		bpos->idx = browser.nr_entries++;
		if (pos->offset != -1) {
			bpos->idx_asm = browser.nr_asm_entries++;
			/*
			 * FIXME: short term bandaid to cope with assembly
			 * routines that comes with labels in the same column
			 * as the address in objdump, sigh.
			 *
			 * E.g. copy_user_generic_unrolled
 			 */
			if (pos->offset < (s64)size)
				browser.offsets[pos->offset] = pos;
		} else
			bpos->idx_asm = -1;
	}

	annotate_browser__mark_jump_targets(&browser, size);

	browser.addr_width = browser.target_width = browser.min_addr_width = hex_width(size);
	browser.max_addr_width = hex_width(sym->end);
	browser.jumps_width = width_jumps(browser.max_jump_sources);
	browser.b.nr_entries = browser.nr_entries;
	browser.b.entries = &notes->src->source,
	browser.b.width += 18; /* Percentage */

	if (annotate_browser__opts.hide_src_code)
		annotate_browser__init_asm_mode(&browser);

	annotate_browser__update_addr_width(&browser);

	ret = annotate_browser__run(&browser, evidx, timer, arg, delay_secs);
	list_for_each_entry_safe(pos, n, &notes->src->source, node) {
		list_del(&pos->node);
		disasm_line__free(pos);
	}

out_free_offsets:
	free(browser.offsets);
	return ret;
}

#define ANNOTATE_CFG(n) \
	{ .name = #n, .value = &annotate_browser__opts.n, }
	
/*
 * Keep the entries sorted, they are bsearch'ed
 */
static struct annotate__config {
	const char *name;
	bool *value;
} annotate__configs[] = {
	ANNOTATE_CFG(hide_src_code),
	ANNOTATE_CFG(jump_arrows),
	ANNOTATE_CFG(show_nr_jumps),
	ANNOTATE_CFG(use_offset),
};

#undef ANNOTATE_CFG

static int annotate_config__cmp(const void *name, const void *cfgp)
{
	const struct annotate__config *cfg = cfgp;

	return strcmp(name, cfg->name);
}

static int annotate__config(const char *var, const char *value, void *data __used)
{
	struct annotate__config *cfg;
	const char *name;

	if (prefixcmp(var, "annotate.") != 0)
		return 0;

	name = var + 9;
	cfg = bsearch(name, annotate__configs, ARRAY_SIZE(annotate__configs),
		      sizeof(struct annotate__config), annotate_config__cmp);

	if (cfg == NULL)
		return -1;

	*cfg->value = perf_config_bool(name, value);
	return 0;
}

void annotate_browser__init(void)
{
	perf_config(annotate__config, NULL);
}