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 <stdbool.h>
   9 #include "types.h"
  10
  11 enum map_type {
  12         MAP__FUNCTION = 0,
  13         MAP__VARIABLE,
  14 };
  15
  16 #define MAP__NR_TYPES (MAP__VARIABLE + 1)
  17
  18 extern const char *map_type__name[MAP__NR_TYPES];
  19
  20 struct dso;
  21 struct ref_reloc_sym;
  22 struct map_groups;
  23 struct machine;
  24
  25 struct map {
  26         union {
  27                 struct rb_node  rb_node;
  28                 struct list_head node;
  29         };
  30         u64                     start;
  31         u64                     end;
  32         enum map_type           type;
  33         u64                     pgoff;
  34
  35         /* ip -> dso rip */
  36         u64                     (*map_ip)(struct map *, u64);
  37         /* dso rip -> ip */
  38         u64                     (*unmap_ip)(struct map *, u64);
  39
  40         struct dso              *dso;
  41         struct map_groups       *groups;
  42 };
  43
  44 struct kmap {
  45         struct ref_reloc_sym    *ref_reloc_sym;
  46         struct map_groups       *kmaps;
  47 };
  48
  49 struct map_groups {
  50         struct rb_root   maps[MAP__NR_TYPES];
  51         struct list_head removed_maps[MAP__NR_TYPES];
  52         struct machine   *machine;
  53 };
  54
  55 /* Native host kernel uses -1 as pid index in machine */
  56 #define HOST_KERNEL_ID                  (-1)
  57 #define DEFAULT_GUEST_KERNEL_ID         (0)
  58
  59 struct machine {
  60         struct rb_node    rb_node;
  61         pid_t             pid;
  62         char              *root_dir;
  63         struct list_head  user_dsos;
  64         struct list_head  kernel_dsos;
  65         struct map_groups kmaps;
  66         struct map        *vmlinux_maps[MAP__NR_TYPES];
  67 };
  68
  69 static inline struct kmap *map__kmap(struct map *self)
  70 {
  71         return (struct kmap *)(self + 1);
  72 }
  73
  74 static inline u64 map__map_ip(struct map *map, u64 ip)
  75 {
  76         return ip - map->start + map->pgoff;
  77 }
  78
  79 static inline u64 map__unmap_ip(struct map *map, u64 ip)
  80 {
  81         return ip + map->start - map->pgoff;
  82 }
  83
  84 static inline u64 identity__map_ip(struct map *map __used, u64 ip)
  85 {
  86         return ip;
  87 }
  88
  89
  90 /* rip/ip <-> addr suitable for passing to `objdump --start-address=` */
  91 u64 map__rip_2objdump(struct map *map, u64 rip);
  92 u64 map__objdump_2ip(struct map *map, u64 addr);
  93
  94 struct symbol;
  95
  96 typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
  97
  98 void map__init(struct map *self, enum map_type type,
  99                u64 start, u64 end, u64 pgoff, struct dso *dso);
 100 struct map *map__new(struct list_head *dsos__list, u64 start, u64 len,
 101                      u64 pgoff, u32 pid, char *filename,
 102                      enum map_type type, char *cwd, int cwdlen);
 103 void map__delete(struct map *self);
 104 struct map *map__clone(struct map *self);
 105 int map__overlap(struct map *l, struct map *r);
 106 size_t map__fprintf(struct map *self, FILE *fp);
 107
 108 int map__load(struct map *self, symbol_filter_t filter);
 109 struct symbol *map__find_symbol(struct map *self,
 110                                 u64 addr, symbol_filter_t filter);
 111 struct symbol *map__find_symbol_by_name(struct map *self, const char *name,
 112                                         symbol_filter_t filter);
 113 void map__fixup_start(struct map *self);
 114 void map__fixup_end(struct map *self);
 115
 116 void map__reloc_vmlinux(struct map *self);
 117
 118 size_t __map_groups__fprintf_maps(struct map_groups *self,
 119                                   enum map_type type, int verbose, FILE *fp);
 120 void maps__insert(struct rb_root *maps, struct map *map);
 121 struct map *maps__find(struct rb_root *maps, u64 addr);
 122 void map_groups__init(struct map_groups *self);
 123 int map_groups__clone(struct map_groups *self,
 124                       struct map_groups *parent, enum map_type type);
 125 size_t map_groups__fprintf(struct map_groups *self, int verbose, FILE *fp);
 126 size_t map_groups__fprintf_maps(struct map_groups *self, int verbose, FILE *fp);
 127
 128 typedef void (*machine__process_t)(struct machine *self, void *data);
 129
 130 void machines__process(struct rb_root *self, machine__process_t process, void *data);
 131 struct machine *machines__add(struct rb_root *self, pid_t pid,
 132                               const char *root_dir);
 133 struct machine *machines__find_host(struct rb_root *self);
 134 struct machine *machines__find(struct rb_root *self, pid_t pid);
 135 struct machine *machines__findnew(struct rb_root *self, pid_t pid);
 136 char *machine__mmap_name(struct machine *self, char *bf, size_t size);
 137 int machine__init(struct machine *self, const char *root_dir, pid_t pid);
 138
 139 /*
 140  * Default guest kernel is defined by parameter --guestkallsyms
 141  * and --guestmodules
 142  */
 143 static inline bool machine__is_default_guest(struct machine *self)
 144 {
 145         return self ? self->pid == DEFAULT_GUEST_KERNEL_ID : false;
 146 }
 147
 148 static inline bool machine__is_host(struct machine *self)
 149 {
 150         return self ? self->pid == HOST_KERNEL_ID : false;
 151 }
 152
 153 static inline void map_groups__insert(struct map_groups *self, struct map *map)
 154 {
 155         maps__insert(&self->maps[map->type], map);
 156         map->groups = self;
 157 }
 158
 159 static inline struct map *map_groups__find(struct map_groups *self,
 160                                            enum map_type type, u64 addr)
 161 {
 162         return maps__find(&self->maps[type], addr);
 163 }
 164
 165 struct symbol *map_groups__find_symbol(struct map_groups *self,
 166                                        enum map_type type, u64 addr,
 167                                        struct map **mapp,
 168                                        symbol_filter_t filter);
 169
 170 struct symbol *map_groups__find_symbol_by_name(struct map_groups *self,
 171                                                enum map_type type,
 172                                                const char *name,
 173                                                struct map **mapp,
 174                                                symbol_filter_t filter);
 175
 176 static inline struct symbol *machine__find_function(struct machine *self,
 177                                                     u64 addr, struct map **mapp,
 178                                                     symbol_filter_t filter)
 179 {
 180         return map_groups__find_symbol(&self->kmaps, MAP__FUNCTION, addr, mapp, filter);
 181 }
 182
 183 static inline
 184 struct symbol *map_groups__find_function_by_name(struct map_groups *self,
 185                                                  const char *name, struct map **mapp,
 186                                                  symbol_filter_t filter)
 187 {
 188         return map_groups__find_symbol_by_name(self, MAP__FUNCTION, name, mapp, filter);
 189 }
 190
 191 int map_groups__fixup_overlappings(struct map_groups *self, struct map *map,
 192                                    int verbose, FILE *fp);
 193
 194 struct map *map_groups__find_by_name(struct map_groups *self,
 195                                      enum map_type type, const char *name);
 196 struct map *machine__new_module(struct machine *self, u64 start, const char *filename);
 197
 198 void map_groups__flush(struct map_groups *self);
 199
 200 #endif /* __PERF_MAP_H */