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