1#include "../libslang.h"
2#include <elf.h>
3#include <inttypes.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 err;
45}
46
47struct map_browser {
48	struct ui_browser b;
49	struct map	  *map;
50	u8		  addrlen;
51};
52
53static void map_browser__write(struct ui_browser *self, void *nd, int row)
54{
55	struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
56	struct map_browser *mb = container_of(self, struct map_browser, b);
57	bool current_entry = ui_browser__is_current_entry(self, row);
58	int width;
59
60	ui_browser__set_percent_color(self, 0, current_entry);
61	slsmg_printf("%*" PRIx64 " %*" PRIx64 " %c ",
62		     mb->addrlen, sym->start, mb->addrlen, sym->end,
63		     sym->binding == STB_GLOBAL ? 'g' :
64		     sym->binding == STB_LOCAL  ? 'l' : 'w');
65	width = self->width - ((mb->addrlen * 2) + 4);
66	if (width > 0)
67		slsmg_write_nstring(sym->name, width);
68}
69
70/* FIXME uber-kludgy, see comment on cmd_report... */
71static u32 *symbol__browser_index(struct symbol *self)
72{
73	return ((void *)self) - sizeof(struct rb_node) - sizeof(u32);
74}
75
76static int map_browser__search(struct map_browser *self)
77{
78	char target[512];
79	struct symbol *sym;
80	int err = ui_entry__read("Search by name/addr", target, sizeof(target), 40);
81
82	if (err)
83		return err;
84
85	if (target[0] == '0' && tolower(target[1]) == 'x') {
86		u64 addr = strtoull(target, NULL, 16);
87		sym = map__find_symbol(self->map, addr, NULL);
88	} else
89		sym = map__find_symbol_by_name(self->map, target, NULL);
90
91	if (sym != NULL) {
92		u32 *idx = symbol__browser_index(sym);
93
94		self->b.top = &sym->rb_node;
95		self->b.index = self->b.top_idx = *idx;
96	} else
97		ui_helpline__fpush("%s not found!", target);
98
99	return 0;
100}
101
102static int map_browser__run(struct map_browser *self)
103{
104	int key;
105
106	if (ui_browser__show(&self->b, self->map->dso->long_name,
107			     "Press <- or ESC to exit, %s / to search",
108			     verbose ? "" : "restart with -v to use") < 0)
109		return -1;
110
111	if (verbose)
112		ui_browser__add_exit_key(&self->b, '/');
113
114	while (1) {
115		key = ui_browser__run(&self->b);
116
117		if (verbose && key == '/')
118			map_browser__search(self);
119		else
120			break;
121	}
122
123	ui_browser__hide(&self->b);
124	return key;
125}
126
127int map__browse(struct map *self)
128{
129	struct map_browser mb = {
130		.b = {
131			.entries = &self->dso->symbols[self->type],
132			.refresh = ui_browser__rb_tree_refresh,
133			.seek	 = ui_browser__rb_tree_seek,
134			.write	 = map_browser__write,
135		},
136		.map = self,
137	};
138	struct rb_node *nd;
139	char tmp[BITS_PER_LONG / 4];
140	u64 maxaddr = 0;
141
142	for (nd = rb_first(mb.b.entries); nd; nd = rb_next(nd)) {
143		struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
144
145		if (maxaddr < pos->end)
146			maxaddr = pos->end;
147		if (verbose) {
148			u32 *idx = symbol__browser_index(pos);
149			*idx = mb.b.nr_entries;
150		}
151		++mb.b.nr_entries;
152	}
153
154	mb.addrlen = snprintf(tmp, sizeof(tmp), "%" PRIx64, maxaddr);
155	return map_browser__run(&mb);
156}
157