summaryrefslogtreecommitdiffstats
path: root/tools/perf/util/map.h
blob: 3dcfe06db6b3300c879d4dc24c13219449b2073b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_MAP_H
#define __PERF_MAP_H

#include <linux/refcount.h>
#include <linux/compiler.h>
#include <linux/list.h>
#include <linux/rbtree.h>
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <linux/types.h>

struct dso;
struct maps;
struct machine;

struct map {
	union {
		struct rb_node	rb_node;
		struct list_head node;
	};
	u64			start;
	u64			end;
	bool			erange_warned:1;
	bool			priv:1;
	u32			prot;
	u64			pgoff;
	u64			reloc;

	/* ip -> dso rip */
	u64			(*map_ip)(const struct map *, u64);
	/* dso rip -> ip */
	u64			(*unmap_ip)(const struct map *, u64);

	struct dso		*dso;
	refcount_t		refcnt;
	u32			flags;
};

struct kmap;

struct kmap *__map__kmap(struct map *map);
struct kmap *map__kmap(struct map *map);
struct maps *map__kmaps(struct map *map);

/* ip -> dso rip */
u64 map__map_ip(const struct map *map, u64 ip);
/* dso rip -> ip */
u64 map__unmap_ip(const struct map *map, u64 ip);
/* Returns ip */
u64 identity__map_ip(const struct map *map __maybe_unused, u64 ip);

static inline size_t map__size(const struct map *map)
{
	return map->end - map->start;
}

/* rip/ip <-> addr suitable for passing to `objdump --start-address=` */
u64 map__rip_2objdump(struct map *map, u64 rip);

/* objdump address -> memory address */
u64 map__objdump_2mem(struct map *map, u64 ip);

struct symbol;
struct thread;

/* map__for_each_symbol - iterate over the symbols in the given map
 *
 * @map: the 'struct map *' in which symbols are iterated
 * @pos: the 'struct symbol *' to use as a loop cursor
 * @n: the 'struct rb_node *' to use as a temporary storage
 * Note: caller must ensure map->dso is not NULL (map is loaded).
 */
#define map__for_each_symbol(map, pos, n)	\
	dso__for_each_symbol(map->dso, pos, n)

/* map__for_each_symbol_with_name - iterate over the symbols in the given map
 *                                  that have the given name
 *
 * @map: the 'struct map *' in which symbols are iterated
 * @sym_name: the symbol name
 * @pos: the 'struct symbol *' to use as a loop cursor
 */
#define __map__for_each_symbol_by_name(map, sym_name, pos)	\
	for (pos = map__find_symbol_by_name(map, sym_name);	\
	     pos &&						\
	     !symbol__match_symbol_name(pos->name, sym_name,	\
					SYMBOL_TAG_INCLUDE__DEFAULT_ONLY); \
	     pos = symbol__next_by_name(pos))

#define map__for_each_symbol_by_name(map, sym_name, pos)		\
	__map__for_each_symbol_by_name(map, sym_name, (pos))

void map__init(struct map *map,
	       u64 start, u64 end, u64 pgoff, struct dso *dso);

struct dso_id;
struct build_id;

struct map *map__new(struct machine *machine, u64 start, u64 len,
		     u64 pgoff, struct dso_id *id, u32 prot, u32 flags,
		     struct build_id *bid, char *filename, struct thread *thread);
struct map *map__new2(u64 start, struct dso *dso);
void map__delete(struct map *map);
struct map *map__clone(struct map *map);

static inline struct map *map__get(struct map *map)
{
	if (map)
		refcount_inc(&map->refcnt);
	return map;
}

void map__put(struct map *map);

static inline void __map__zput(struct map **map)
{
	map__put(*map);
	*map = NULL;
}

#define map__zput(map) __map__zput(&map)

size_t map__fprintf(struct map *map, FILE *fp);
size_t map__fprintf_dsoname(struct map *map, FILE *fp);
char *map__srcline(struct map *map, u64 addr, struct symbol *sym);
int map__fprintf_srcline(struct map *map, u64 addr, const char *prefix,
			 FILE *fp);

int map__load(struct map *map);
struct symbol *map__find_symbol(struct map *map, u64 addr);
struct symbol *map__find_symbol_by_name(struct map *map, const char *name);
void map__fixup_start(struct map *map);
void map__fixup_end(struct map *map);

int map__set_kallsyms_ref_reloc_sym(struct map *map, const char *symbol_name,
				    u64 addr);

bool __map__is_kernel(const struct map *map);
bool __map__is_extra_kernel_map(const struct map *map);
bool __map__is_bpf_prog(const struct map *map);
bool __map__is_bpf_image(const struct map *map);
bool __map__is_ool(const struct map *map);

static inline bool __map__is_kmodule(const struct map *map)
{
	return !__map__is_kernel(map) && !__map__is_extra_kernel_map(map) &&
	       !__map__is_bpf_prog(map) && !__map__is_ool(map) &&
	       !__map__is_bpf_image(map);
}

bool map__has_symbols(const struct map *map);

bool map__contains_symbol(const struct map *map, const struct symbol *sym);

#define ENTRY_TRAMPOLINE_NAME "__entry_SYSCALL_64_trampoline"

static inline bool is_entry_trampoline(const char *name)
{
	return !strcmp(name, ENTRY_TRAMPOLINE_NAME);
}

static inline bool is_bpf_image(const char *name)
{
	return strncmp(name, "bpf_trampoline_", sizeof("bpf_trampoline_") - 1) == 0 ||
	       strncmp(name, "bpf_dispatcher_", sizeof("bpf_dispatcher_") - 1) == 0;
}

static inline int is_anon_memory(const char *filename)
{
	return !strcmp(filename, "//anon") ||
	       !strncmp(filename, "/dev/zero", sizeof("/dev/zero") - 1) ||
	       !strncmp(filename, "/anon_hugepage", sizeof("/anon_hugepage") - 1);
}

static inline int is_no_dso_memory(const char *filename)
{
	return !strncmp(filename, "[stack", 6) ||
	       !strncmp(filename, "/SYSV", 5)  ||
	       !strcmp(filename, "[heap]");
}
#endif /* __PERF_MAP_H */