xref: /openbmc/linux/tools/perf/ui/browsers/map.c (revision 0883c2c0)
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 struct map_browser {
15 	struct ui_browser b;
16 	struct map	  *map;
17 	u8		  addrlen;
18 };
19 
20 static void map_browser__write(struct ui_browser *browser, void *nd, int row)
21 {
22 	struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
23 	struct map_browser *mb = container_of(browser, struct map_browser, b);
24 	bool current_entry = ui_browser__is_current_entry(browser, row);
25 	int width;
26 
27 	ui_browser__set_percent_color(browser, 0, current_entry);
28 	ui_browser__printf(browser, "%*" PRIx64 " %*" PRIx64 " %c ",
29 			   mb->addrlen, sym->start, mb->addrlen, sym->end,
30 			   sym->binding == STB_GLOBAL ? 'g' :
31 				sym->binding == STB_LOCAL  ? 'l' : 'w');
32 	width = browser->width - ((mb->addrlen * 2) + 4);
33 	if (width > 0)
34 		ui_browser__write_nstring(browser, sym->name, width);
35 }
36 
37 /* FIXME uber-kludgy, see comment on cmd_report... */
38 static u32 *symbol__browser_index(struct symbol *browser)
39 {
40 	return ((void *)browser) - sizeof(struct rb_node) - sizeof(u32);
41 }
42 
43 static int map_browser__search(struct map_browser *browser)
44 {
45 	char target[512];
46 	struct symbol *sym;
47 	int err = ui_browser__input_window("Search by name/addr",
48 					   "Prefix with 0x to search by address",
49 					   target, "ENTER: OK, ESC: Cancel", 0);
50 	if (err != K_ENTER)
51 		return -1;
52 
53 	if (target[0] == '0' && tolower(target[1]) == 'x') {
54 		u64 addr = strtoull(target, NULL, 16);
55 		sym = map__find_symbol(browser->map, addr, NULL);
56 	} else
57 		sym = map__find_symbol_by_name(browser->map, target, NULL);
58 
59 	if (sym != NULL) {
60 		u32 *idx = symbol__browser_index(sym);
61 
62 		browser->b.top = &sym->rb_node;
63 		browser->b.index = browser->b.top_idx = *idx;
64 	} else
65 		ui_helpline__fpush("%s not found!", target);
66 
67 	return 0;
68 }
69 
70 static int map_browser__run(struct map_browser *browser)
71 {
72 	int key;
73 
74 	if (ui_browser__show(&browser->b, browser->map->dso->long_name,
75 			     "Press ESC to exit, %s / to search",
76 			     verbose ? "" : "restart with -v to use") < 0)
77 		return -1;
78 
79 	while (1) {
80 		key = ui_browser__run(&browser->b, 0);
81 
82 		switch (key) {
83 		case '/':
84 			if (verbose)
85 				map_browser__search(browser);
86 		default:
87 			break;
88                 case K_LEFT:
89                 case K_ESC:
90                 case 'q':
91                 case CTRL('c'):
92                         goto out;
93 		}
94 	}
95 out:
96 	ui_browser__hide(&browser->b);
97 	return key;
98 }
99 
100 int map__browse(struct map *map)
101 {
102 	struct map_browser mb = {
103 		.b = {
104 			.entries = &map->dso->symbols[map->type],
105 			.refresh = ui_browser__rb_tree_refresh,
106 			.seek	 = ui_browser__rb_tree_seek,
107 			.write	 = map_browser__write,
108 		},
109 		.map = map,
110 	};
111 	struct rb_node *nd;
112 	char tmp[BITS_PER_LONG / 4];
113 	u64 maxaddr = 0;
114 
115 	for (nd = rb_first(mb.b.entries); nd; nd = rb_next(nd)) {
116 		struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
117 
118 		if (maxaddr < pos->end)
119 			maxaddr = pos->end;
120 		if (verbose) {
121 			u32 *idx = symbol__browser_index(pos);
122 			*idx = mb.b.nr_entries;
123 		}
124 		++mb.b.nr_entries;
125 	}
126 
127 	mb.addrlen = snprintf(tmp, sizeof(tmp), "%" PRIx64, maxaddr);
128 	return map_browser__run(&mb);
129 }
130