1 // SPDX-License-Identifier: GPL-2.0
2 #include <elf.h>
3 #include <inttypes.h>
4 #include <sys/ttydefaults.h>
5 #include <stdlib.h>
6 #include <string.h>
7 #include <linux/bitops.h>
8 #include "../../util/debug.h"
9 #include "../../util/map.h"
10 #include "../../util/dso.h"
11 #include "../../util/symbol.h"
12 #include "../browser.h"
13 #include "../helpline.h"
14 #include "../keysyms.h"
15 #include "map.h"
16 
17 #include <linux/ctype.h>
18 
19 struct map_browser {
20 	struct ui_browser b;
21 	struct map	  *map;
22 	u8		  addrlen;
23 };
24 
map_browser__write(struct ui_browser * browser,void * nd,int row)25 static void map_browser__write(struct ui_browser *browser, void *nd, int row)
26 {
27 	struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
28 	struct map_browser *mb = container_of(browser, struct map_browser, b);
29 	bool current_entry = ui_browser__is_current_entry(browser, row);
30 	int width;
31 
32 	ui_browser__set_percent_color(browser, 0, current_entry);
33 	ui_browser__printf(browser, "%*" PRIx64 " %*" PRIx64 " %c ",
34 			   mb->addrlen, sym->start, mb->addrlen, sym->end,
35 			   sym->binding == STB_GLOBAL ? 'g' :
36 				sym->binding == STB_LOCAL  ? 'l' : 'w');
37 	width = browser->width - ((mb->addrlen * 2) + 4);
38 	if (width > 0)
39 		ui_browser__write_nstring(browser, sym->name, width);
40 }
41 
42 /* FIXME uber-kludgy, see comment on cmd_report... */
symbol__browser_index(struct symbol * browser)43 static u32 *symbol__browser_index(struct symbol *browser)
44 {
45 	return ((void *)browser) - sizeof(struct rb_node) - sizeof(u32);
46 }
47 
map_browser__search(struct map_browser * browser)48 static int map_browser__search(struct map_browser *browser)
49 {
50 	char target[512];
51 	struct symbol *sym;
52 	int err = ui_browser__input_window("Search by name/addr",
53 					   "Prefix with 0x to search by address",
54 					   target, "ENTER: OK, ESC: Cancel", 0);
55 	if (err != K_ENTER)
56 		return -1;
57 
58 	if (target[0] == '0' && tolower(target[1]) == 'x') {
59 		u64 addr = strtoull(target, NULL, 16);
60 		sym = map__find_symbol(browser->map, addr);
61 	} else
62 		sym = map__find_symbol_by_name(browser->map, target);
63 
64 	if (sym != NULL) {
65 		u32 *idx = symbol__browser_index(sym);
66 
67 		browser->b.top = &sym->rb_node;
68 		browser->b.index = browser->b.top_idx = *idx;
69 	} else
70 		ui_helpline__fpush("%s not found!", target);
71 
72 	return 0;
73 }
74 
map_browser__run(struct map_browser * browser)75 static int map_browser__run(struct map_browser *browser)
76 {
77 	int key;
78 
79 	if (ui_browser__show(&browser->b, browser->map->dso->long_name,
80 			     "Press ESC to exit, %s / to search",
81 			     verbose > 0 ? "" : "restart with -v to use") < 0)
82 		return -1;
83 
84 	while (1) {
85 		key = ui_browser__run(&browser->b, 0);
86 
87 		switch (key) {
88 		case '/':
89 			if (verbose > 0)
90 				map_browser__search(browser);
91 		default:
92 			break;
93                 case K_LEFT:
94                 case K_ESC:
95                 case 'q':
96                 case CTRL('c'):
97                         goto out;
98 		}
99 	}
100 out:
101 	ui_browser__hide(&browser->b);
102 	return key;
103 }
104 
map__browse(struct map * map)105 int map__browse(struct map *map)
106 {
107 	struct map_browser mb = {
108 		.b = {
109 			.entries = &map->dso->symbols,
110 			.refresh = ui_browser__rb_tree_refresh,
111 			.seek	 = ui_browser__rb_tree_seek,
112 			.write	 = map_browser__write,
113 		},
114 		.map = map,
115 	};
116 	struct rb_node *nd;
117 	char tmp[BITS_PER_LONG / 4];
118 	u64 maxaddr = 0;
119 
120 	for (nd = rb_first(mb.b.entries); nd; nd = rb_next(nd)) {
121 		struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
122 
123 		if (maxaddr < pos->end)
124 			maxaddr = pos->end;
125 		if (verbose > 0) {
126 			u32 *idx = symbol__browser_index(pos);
127 			*idx = mb.b.nr_entries;
128 		}
129 		++mb.b.nr_entries;
130 	}
131 
132 	mb.addrlen = snprintf(tmp, sizeof(tmp), "%" PRIx64, maxaddr);
133 	return map_browser__run(&mb);
134 }
135