tools/perf/util/symbol.h

   1 #ifndef __PERF_SYMBOL
   2 #define __PERF_SYMBOL 1
   3
   4 #include <linux/types.h>
   5 #include <stdbool.h>
   6 #include "types.h"
   7 #include <linux/list.h>
   8 #include <linux/rbtree.h>
   9 #include "event.h"
  10
  11 #ifdef HAVE_CPLUS_DEMANGLE
  12 extern char *cplus_demangle(const char *, int);
  13
  14 static inline char *bfd_demangle(void __used *v, const char *c, int i)
  15 {
  16         return cplus_demangle(c, i);
  17 }
  18 #else
  19 #ifdef NO_DEMANGLE
  20 static inline char *bfd_demangle(void __used *v, const char __used *c,
  21                                  int __used i)
  22 {
  23         return NULL;
  24 }
  25 #else
  26 #include <bfd.h>
  27 #endif
  28 #endif
  29
  30 /*
  31  * libelf 0.8.x and earlier do not support ELF_C_READ_MMAP;
  32  * for newer versions we can use mmap to reduce memory usage:
  33  */
  34 #ifdef LIBELF_NO_MMAP
  35 # define PERF_ELF_C_READ_MMAP ELF_C_READ
  36 #else
  37 # define PERF_ELF_C_READ_MMAP ELF_C_READ_MMAP
  38 #endif
  39
  40 #ifndef DMGL_PARAMS
  41 #define DMGL_PARAMS      (1 << 0)       /* Include function args */
  42 #define DMGL_ANSI        (1 << 1)       /* Include const, volatile, etc */
  43 #endif
  44
  45 struct symbol {
  46         struct rb_node  rb_node;
  47         u64             start;
  48         u64             end;
  49         char            name[0];
  50 };
  51
  52 struct symbol_conf {
  53         unsigned short  priv_size;
  54         bool            try_vmlinux_path,
  55                         use_modules;
  56         const char      *vmlinux_name;
  57 };
  58
  59 extern unsigned int symbol__priv_size;
  60
  61 static inline void *symbol__priv(struct symbol *self)
  62 {
  63         return ((void *)self) - symbol__priv_size;
  64 }
  65
  66 struct dso {
  67         struct list_head node;
  68         struct rb_root   functions;
  69         struct symbol    *(*find_function)(struct dso *, u64 ip);
  70         u8               adjust_symbols:1;
  71         u8               slen_calculated:1;
  72         u8               loaded:1;
  73         u8               has_build_id:1;
  74         u8               kernel:1;
  75         unsigned char    origin;
  76         u8               build_id[BUILD_ID_SIZE];
  77         u16              long_name_len;
  78         const char       *short_name;
  79         char             *long_name;
  80         char             name[0];
  81 };
  82
  83 struct dso *dso__new(const char *name);
  84 void dso__delete(struct dso *self);
  85
  86 struct symbol *dso__find_function(struct dso *self, u64 ip);
  87
  88 struct dso *dsos__findnew(const char *name);
  89 int dso__load(struct dso *self, struct map *map, symbol_filter_t filter);
  90 void dsos__fprintf(FILE *fp);
  91 size_t dsos__fprintf_buildid(FILE *fp);
  92
  93 size_t dso__fprintf_buildid(struct dso *self, FILE *fp);
  94 size_t dso__fprintf(struct dso *self, FILE *fp);
  95 char dso__symtab_origin(const struct dso *self);
  96 void dso__set_build_id(struct dso *self, void *build_id);
  97
  98 int filename__read_build_id(const char *filename, void *bf, size_t size);
  99 int sysfs__read_build_id(const char *filename, void *bf, size_t size);
 100 bool dsos__read_build_ids(void);
 101 int build_id__sprintf(u8 *self, int len, char *bf);
 102
 103 size_t kernel_maps__fprintf(FILE *fp);
 104
 105 int symbol__init(struct symbol_conf *conf);
 106
 107 extern struct list_head dsos;
 108 extern struct map *kernel_map__functions;
 109 extern struct dso *vdso;
 110 #endif /* __PERF_SYMBOL */