xref: /openbmc/linux/tools/perf/ui/browsers/map.c (revision 4da722ca)
1 #include <elf.h>
2 #include <inttypes.h>
3 #include <sys/ttydefaults.h>
4 #include <string.h>
5 #include <linux/bitops.h>
6 #include "../../util/util.h"
7 #include "../../util/debug.h"
8 #include "../../util/symbol.h"
9 #include "../browser.h"
10 #include "../helpline.h"
11 #include "../keysyms.h"
12 #include "map.h"
13 
14 #include "sane_ctype.h"
15 
16 struct map_browser {
17 	struct ui_browser b;
18 	struct map	  *map;
19 	u8		  addrlen;
20 };
21 
22 static void map_browser__write(struct ui_browser *browser, void *nd, int row)
23 {
24 	struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
25 	struct map_browser *mb = container_of(browser, struct map_browser, b);
26 	bool current_entry = ui_browser__is_current_entry(browser, row);
27 	int width;
28 
29 	ui_browser__set_percent_color(browser, 0, current_entry);
30 	ui_browser__printf(browser, "%*" PRIx64 " %*" PRIx64 " %c ",
31 			   mb->addrlen, sym->start, mb->addrlen, sym->end,
32 			   sym->binding == STB_GLOBAL ? 'g' :
33 				sym->binding == STB_LOCAL  ? 'l' : 'w');
34 	width = browser->width - ((mb->addrlen * 2) + 4);
35 	if (width > 0)
36 		ui_browser__write_nstring(browser, sym->name, width);
37 }
38 
39 /* FIXME uber-kludgy, see comment on cmd_report... */
40 static u32 *symbol__browser_index(struct symbol *browser)
41 {
42 	return ((void *)browser) - sizeof(struct rb_node) - sizeof(u32);
43 }
44 
45 static int map_browser__search(struct map_browser *browser)
46 {
47 	char target[512];
48 	struct symbol *sym;
49 	int err = ui_browser__input_window("Search by name/addr",
50 					   "Prefix with 0x to search by address",
51 					   target, "ENTER: OK, ESC: Cancel", 0);
52 	if (err != K_ENTER)
53 		return -1;
54 
55 	if (target[0] == '0' && tolower(target[1]) == 'x') {
56 		u64 addr = strtoull(target, NULL, 16);
57 		sym = map__find_symbol(browser->map, addr);
58 	} else
59 		sym = map__find_symbol_by_name(browser->map, target);
60 
61 	if (sym != NULL) {
62 		u32 *idx = symbol__browser_index(sym);
63 
64 		browser->b.top = &sym->rb_node;
65 		browser->b.index = browser->b.top_idx = *idx;
66 	} else
67 		ui_helpline__fpush("%s not found!", target);
68 
69 	return 0;
70 }
71 
72 static int map_browser__run(struct map_browser *browser)
73 {
74 	int key;
75 
76 	if (ui_browser__show(&browser->b, browser->map->dso->long_name,
77 			     "Press ESC to exit, %s / to search",
78 			     verbose > 0 ? "" : "restart with -v to use") < 0)
79 		return -1;
80 
81 	while (1) {
82 		key = ui_browser__run(&browser->b, 0);
83 
84 		switch (key) {
85 		case '/':
86 			if (verbose > 0)
87 				map_browser__search(browser);
88 		default:
89 			break;
90                 case K_LEFT:
91                 case K_ESC:
92                 case 'q':
93                 case CTRL('c'):
94                         goto out;
95 		}
96 	}
97 out:
98 	ui_browser__hide(&browser->b);
99 	return key;
100 }
101 
102 int map__browse(struct map *map)
103 {
104 	struct map_browser mb = {
105 		.b = {
106 			.entries = &map->dso->symbols[map->type],
107 			.refresh = ui_browser__rb_tree_refresh,
108 			.seek	 = ui_browser__rb_tree_seek,
109 			.write	 = map_browser__write,
110 		},
111 		.map = map,
112 	};
113 	struct rb_node *nd;
114 	char tmp[BITS_PER_LONG / 4];
115 	u64 maxaddr = 0;
116 
117 	for (nd = rb_first(mb.b.entries); nd; nd = rb_next(nd)) {
118 		struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
119 
120 		if (maxaddr < pos->end)
121 			maxaddr = pos->end;
122 		if (verbose > 0) {
123 			u32 *idx = symbol__browser_index(pos);
124 			*idx = mb.b.nr_entries;
125 		}
126 		++mb.b.nr_entries;
127 	}
128 
129 	mb.addrlen = snprintf(tmp, sizeof(tmp), "%" PRIx64, maxaddr);
130 	return map_browser__run(&mb);
131 }
132