tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#include "../libslang.h"
2#include <elf.h>
3#include <newt.h>
4#include <sys/ttydefaults.h>
5#include <ctype.h>
6#include <string.h>
7#include <linux/bitops.h>
8#include "../../debug.h"
9#include "../../symbol.h"
10#include "../browser.h"
11#include "../helpline.h"
12#include "map.h"
13
14static int ui_entry__read(const char *title, char *bf, size_t size, int width)
15{
16 struct newtExitStruct es;
17 newtComponent form, entry;
18 const char *result;
19 int err = -1;
20
21 newtCenteredWindow(width, 1, title);
22 form = newtForm(NULL, NULL, 0);
23 if (form == NULL)
24 return -1;
25
26 entry = newtEntry(0, 0, "0x", width, &result, NEWT_FLAG_SCROLL);
27 if (entry == NULL)
28 goto out_free_form;
29
30 newtFormAddComponent(form, entry);
31 newtFormAddHotKey(form, NEWT_KEY_ENTER);
32 newtFormAddHotKey(form, NEWT_KEY_ESCAPE);
33 newtFormAddHotKey(form, NEWT_KEY_LEFT);
34 newtFormAddHotKey(form, CTRL('c'));
35 newtFormRun(form, &es);
36
37 if (result != NULL) {
38 strncpy(bf, result, size);
39 err = 0;
40 }
41out_free_form:
42 newtPopWindow();
43 newtFormDestroy(form);
44 return 0;
45}
46
47struct map_browser {
48 struct ui_browser b;
49 struct map *map;
50 u16 namelen;
51 u8 addrlen;
52};
53
54static void map_browser__write(struct ui_browser *self, void *nd, int row)
55{
56 struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
57 struct map_browser *mb = container_of(self, struct map_browser, b);
58 bool current_entry = ui_browser__is_current_entry(self, row);
59 int color = ui_browser__percent_color(0, current_entry);
60
61 SLsmg_set_color(color);
62 slsmg_printf("%*llx %*llx %c ",
63 mb->addrlen, sym->start, mb->addrlen, sym->end,
64 sym->binding == STB_GLOBAL ? 'g' :
65 sym->binding == STB_LOCAL ? 'l' : 'w');
66 slsmg_write_nstring(sym->name, mb->namelen);
67}
68
69/* FIXME uber-kludgy, see comment on cmd_report... */
70static u32 *symbol__browser_index(struct symbol *self)
71{
72 return ((void *)self) - sizeof(struct rb_node) - sizeof(u32);
73}
74
75static int map_browser__search(struct map_browser *self)
76{
77 char target[512];
78 struct symbol *sym;
79 int err = ui_entry__read("Search by name/addr", target, sizeof(target), 40);
80
81 if (err)
82 return err;
83
84 if (target[0] == '0' && tolower(target[1]) == 'x') {
85 u64 addr = strtoull(target, NULL, 16);
86 sym = map__find_symbol(self->map, addr, NULL);
87 } else
88 sym = map__find_symbol_by_name(self->map, target, NULL);
89
90 if (sym != NULL) {
91 u32 *idx = symbol__browser_index(sym);
92
93 self->b.top = &sym->rb_node;
94 self->b.index = self->b.top_idx = *idx;
95 } else
96 ui_helpline__fpush("%s not found!", target);
97
98 return 0;
99}
100
101static int map_browser__run(struct map_browser *self, struct newtExitStruct *es)
102{
103 if (ui_browser__show(&self->b, self->map->dso->long_name,
104 "Press <- or ESC to exit, %s / to search",
105 verbose ? "" : "restart with -v to use") < 0)
106 return -1;
107
108 newtFormAddHotKey(self->b.form, NEWT_KEY_LEFT);
109 newtFormAddHotKey(self->b.form, NEWT_KEY_ENTER);
110 if (verbose)
111 newtFormAddHotKey(self->b.form, '/');
112
113 while (1) {
114 ui_browser__run(&self->b, es);
115
116 if (es->reason != NEWT_EXIT_HOTKEY)
117 break;
118 if (verbose && es->u.key == '/')
119 map_browser__search(self);
120 else
121 break;
122 }
123
124 ui_browser__hide(&self->b);
125 return 0;
126}
127
128int map__browse(struct map *self)
129{
130 struct map_browser mb = {
131 .b = {
132 .entries = &self->dso->symbols[self->type],
133 .refresh = ui_browser__rb_tree_refresh,
134 .seek = ui_browser__rb_tree_seek,
135 .write = map_browser__write,
136 },
137 .map = self,
138 };
139 struct newtExitStruct es;
140 struct rb_node *nd;
141 char tmp[BITS_PER_LONG / 4];
142 u64 maxaddr = 0;
143
144 for (nd = rb_first(mb.b.entries); nd; nd = rb_next(nd)) {
145 struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
146
147 if (mb.namelen < pos->namelen)
148 mb.namelen = pos->namelen;
149 if (maxaddr < pos->end)
150 maxaddr = pos->end;
151 if (verbose) {
152 u32 *idx = symbol__browser_index(pos);
153 *idx = mb.b.nr_entries;
154 }
155 ++mb.b.nr_entries;
156 }
157
158 mb.addrlen = snprintf(tmp, sizeof(tmp), "%llx", maxaddr);
159 mb.b.width += mb.addrlen * 2 + 4 + mb.namelen;
160 return map_browser__run(&mb, &es);
161}