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 <linux/types.h>
   8
   9 enum map_type {
  10         MAP__FUNCTION = 0,
  11         MAP__VARIABLE,
  12 };
  13
  14 #define MAP__NR_TYPES (MAP__VARIABLE + 1)
  15
  16 extern const char *map_type__name[MAP__NR_TYPES];
  17
  18 struct dso;
  19 struct ref_reloc_sym;
  20 struct map_groups;
  21
  22 struct map {
  23         union {
  24                 struct rb_node  rb_node;
  25                 struct list_head node;
  26         };
  27         u64                     start;
  28         u64                     end;
  29         enum map_type           type;
  30         u64                     pgoff;
  31
  32         /* ip -> dso rip */
  33         u64                     (*map_ip)(struct map *, u64);
  34         /* dso rip -> ip */
  35         u64                     (*unmap_ip)(struct map *, u64);
  36
  37         struct dso              *dso;
  38 };
  39
  40 struct kmap {
  41         struct ref_reloc_sym    *ref_reloc_sym;
  42         struct map_groups       *kmaps;
  43 };
  44
  45 static inline struct kmap *map__kmap(struct map *self)
  46 {
  47         return (struct kmap *)(self + 1);
  48 }
  49
  50 static inline u64 map__map_ip(struct map *map, u64 ip)
  51 {
  52         return ip - map->start + map->pgoff;
  53 }
  54
  55 static inline u64 map__unmap_ip(struct map *map, u64 ip)
  56 {
  57         return ip + map->start - map->pgoff;
  58 }
  59
  60 static inline u64 identity__map_ip(struct map *map __used, u64 ip)
  61 {
  62         return ip;
  63 }
  64
  65
  66 /* rip/ip <-> addr suitable for passing to `objdump --start-address=` */
  67 u64 map__rip_2objdump(struct map *map, u64 rip);
  68 u64 map__objdump_2ip(struct map *map, u64 addr);
  69
  70 struct symbol;
  71 struct mmap_event;
  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(struct mmap_event *event, enum map_type,
  78                      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 #endif /* __PERF_MAP_H */