tools/perf/util/map.h

   1 #ifndef __PERF_MAP_H
   2 #define __PERF_MAP_H
   3
   4 #include <linux/compiler.h>
   5 #include <linux/list.h>
   6 #include <linux/rbtree.h>
   7 #include <stdio.h>
   8 #include "types.h"
   9
  10 enum map_type {
  11         MAP__FUNCTION = 0,
  12         MAP__VARIABLE,
  13 };
  14
  15 #define MAP__NR_TYPES (MAP__VARIABLE + 1)
  16
  17 extern const char *map_type__name[MAP__NR_TYPES];
  18
  19 struct dso;
  20 struct ref_reloc_sym;
  21 struct map_groups;
  22
  23 struct map {
  24         union {
  25                 struct rb_node  rb_node;
  26                 struct list_head node;
  27         };
  28         u64                     start;
  29         u64                     end;
  30         enum map_type           type;
  31         u64                     pgoff;
  32
  33         /* ip -> dso rip */
  34         u64                     (*map_ip)(struct map *, u64);
  35         /* dso rip -> ip */
  36         u64                     (*unmap_ip)(struct map *, u64);
  37
  38         struct dso              *dso;
  39 };
  40
  41 struct kmap {
  42         struct ref_reloc_sym    *ref_reloc_sym;
  43         struct map_groups       *kmaps;
  44 };
  45
  46 static inline struct kmap *map__kmap(struct map *self)
  47 {
  48         return (struct kmap *)(self + 1);
  49 }
  50
  51 static inline u64 map__map_ip(struct map *map, u64 ip)
  52 {
  53         return ip - map->start + map->pgoff;
  54 }
  55
  56 static inline u64 map__unmap_ip(struct map *map, u64 ip)
  57 {
  58         return ip + map->start - map->pgoff;
  59 }
  60
  61 static inline u64 identity__map_ip(struct map *map __used, u64 ip)
  62 {
  63         return ip;
  64 }
  65
  66
  67 /* rip/ip <-> addr suitable for passing to `objdump --start-address=` */
  68 u64 map__rip_2objdump(struct map *map, u64 rip);
  69 u64 map__objdump_2ip(struct map *map, u64 addr);
  70
  71 struct symbol;
  72
  73 typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
  74
  75 void map__init(struct map *self, enum map_type type,
  76                u64 start, u64 end, u64 pgoff, struct dso *dso);
  77 struct map *map__new(u64 start, u64 len, u64 pgoff, u32 pid, char *filename,
  78                      enum map_type type, char *cwd, int cwdlen);
  79 void map__delete(struct map *self);
  80 struct map *map__clone(struct map *self);
  81 int map__overlap(struct map *l, struct map *r);
  82 size_t map__fprintf(struct map *self, FILE *fp);
  83
  84 int map__load(struct map *self, symbol_filter_t filter);
  85 struct symbol *map__find_symbol(struct map *self,
  86                                 u64 addr, symbol_filter_t filter);
  87 struct symbol *map__find_symbol_by_name(struct map *self, const char *name,
  88                                         symbol_filter_t filter);
  89 void map__fixup_start(struct map *self);
  90 void map__fixup_end(struct map *self);
  91
  92 void map__reloc_vmlinux(struct map *self);
  93
  94 struct map_groups {
  95         struct rb_root          maps[MAP__NR_TYPES];
  96         struct list_head        removed_maps[MAP__NR_TYPES];
  97 };
  98
  99 size_t __map_groups__fprintf_maps(struct map_groups *self,
 100                                   enum map_type type, FILE *fp);
 101 void maps__insert(struct rb_root *maps, struct map *map);
 102 struct map *maps__find(struct rb_root *maps, u64 addr);
 103 void map_groups__init(struct map_groups *self);
 104 size_t map_groups__fprintf_maps(struct map_groups *self, FILE *fp);
 105
 106 static inline void map_groups__insert(struct map_groups *self, struct map *map)
 107 {
 108          maps__insert(&self->maps[map->type], map);
 109 }
 110
 111 static inline struct map *map_groups__find(struct map_groups *self,
 112                                            enum map_type type, u64 addr)
 113 {
 114         return maps__find(&self->maps[type], addr);
 115 }
 116
 117 struct symbol *map_groups__find_symbol(struct map_groups *self,
 118                                        enum map_type type, u64 addr,
 119                                        symbol_filter_t filter);
 120
 121 static inline struct symbol *map_groups__find_function(struct map_groups *self,
 122                                                        u64 addr,
 123                                                        symbol_filter_t filter)
 124 {
 125         return map_groups__find_symbol(self, MAP__FUNCTION, addr, filter);
 126 }
 127
 128 struct map *map_groups__find_by_name(struct map_groups *self,
 129                                      enum map_type type, const char *name);
 130 int __map_groups__create_kernel_maps(struct map_groups *self,
 131                                      struct map *vmlinux_maps[MAP__NR_TYPES],
 132                                      struct dso *kernel);
 133 int map_groups__create_kernel_maps(struct map_groups *self,
 134                                    struct map *vmlinux_maps[MAP__NR_TYPES]);
 135 struct map *map_groups__new_module(struct map_groups *self, u64 start,
 136                                    const char *filename);
 137
 138 #endif /* __PERF_MAP_H */