perf_counter tools: Move symbol resolution classes from report to libperf
Will be used by perf top as well. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20090528175504.GC4747@ghostprotocols.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>hifive-unleashed-5.1
Arnaldo Carvalho de Melo
Ingo Molnar
parent
c93f766909
commit
a2928c42a5
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@ -298,6 +298,7 @@ LIB_H += util/help.h
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LIB_H += util/strbuf.h
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LIB_H += util/run-command.h
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LIB_H += util/sigchain.h
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LIB_H += util/symbol.h
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LIB_OBJS += util/abspath.o
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LIB_OBJS += util/alias.o
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@ -317,6 +318,7 @@ LIB_OBJS += util/strbuf.o
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LIB_OBJS += util/usage.o
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LIB_OBJS += util/wrapper.o
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LIB_OBJS += util/sigchain.o
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LIB_OBJS += util/symbol.o
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LIB_OBJS += util/pager.o
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BUILTIN_OBJS += builtin-help.o
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@ -1,13 +1,10 @@
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#include "util/util.h"
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#include "builtin.h"
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#include <libelf.h>
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#include <gelf.h>
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#include <elf.h>
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#include "util/list.h"
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#include "util/cache.h"
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#include "util/rbtree.h"
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#include "util/symbol.h"
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#include "perf.h"
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@ -62,305 +59,6 @@ typedef union event_union {
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struct comm_event comm;
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} event_t;
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struct symbol {
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struct rb_node rb_node;
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__u64 start;
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__u64 end;
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char name[0];
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};
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static struct symbol *symbol__new(uint64_t start, uint64_t len, const char *name)
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{
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struct symbol *self = malloc(sizeof(*self) + strlen(name) + 1);
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if (self != NULL) {
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self->start = start;
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self->end = start + len;
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strcpy(self->name, name);
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}
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return self;
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}
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static void symbol__delete(struct symbol *self)
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{
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free(self);
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}
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static size_t symbol__fprintf(struct symbol *self, FILE *fp)
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{
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return fprintf(fp, " %llx-%llx %s\n",
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self->start, self->end, self->name);
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}
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struct dso {
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struct list_head node;
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struct rb_root syms;
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char name[0];
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};
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static struct dso *dso__new(const char *name)
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{
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struct dso *self = malloc(sizeof(*self) + strlen(name) + 1);
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if (self != NULL) {
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strcpy(self->name, name);
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self->syms = RB_ROOT;
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}
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return self;
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}
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static void dso__delete_symbols(struct dso *self)
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{
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struct symbol *pos;
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struct rb_node *next = rb_first(&self->syms);
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while (next) {
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pos = rb_entry(next, struct symbol, rb_node);
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next = rb_next(&pos->rb_node);
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symbol__delete(pos);
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}
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}
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static void dso__delete(struct dso *self)
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{
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dso__delete_symbols(self);
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free(self);
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}
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static void dso__insert_symbol(struct dso *self, struct symbol *sym)
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{
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struct rb_node **p = &self->syms.rb_node;
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struct rb_node *parent = NULL;
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const uint64_t ip = sym->start;
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struct symbol *s;
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while (*p != NULL) {
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parent = *p;
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s = rb_entry(parent, struct symbol, rb_node);
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if (ip < s->start)
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p = &(*p)->rb_left;
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else
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p = &(*p)->rb_right;
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}
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rb_link_node(&sym->rb_node, parent, p);
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rb_insert_color(&sym->rb_node, &self->syms);
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}
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static struct symbol *dso__find_symbol(struct dso *self, uint64_t ip)
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{
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struct rb_node *n;
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if (self == NULL)
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return NULL;
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n = self->syms.rb_node;
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while (n) {
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struct symbol *s = rb_entry(n, struct symbol, rb_node);
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if (ip < s->start)
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n = n->rb_left;
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else if (ip > s->end)
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n = n->rb_right;
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else
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return s;
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}
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return NULL;
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}
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/**
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* elf_symtab__for_each_symbol - iterate thru all the symbols
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*
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* @self: struct elf_symtab instance to iterate
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* @index: uint32_t index
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* @sym: GElf_Sym iterator
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*/
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#define elf_symtab__for_each_symbol(syms, nr_syms, index, sym) \
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for (index = 0, gelf_getsym(syms, index, &sym);\
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index < nr_syms; \
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index++, gelf_getsym(syms, index, &sym))
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static inline uint8_t elf_sym__type(const GElf_Sym *sym)
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{
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return GELF_ST_TYPE(sym->st_info);
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}
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static inline int elf_sym__is_function(const GElf_Sym *sym)
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{
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return elf_sym__type(sym) == STT_FUNC &&
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sym->st_name != 0 &&
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sym->st_shndx != SHN_UNDEF &&
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sym->st_size != 0;
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}
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static inline const char *elf_sym__name(const GElf_Sym *sym,
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const Elf_Data *symstrs)
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{
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return symstrs->d_buf + sym->st_name;
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}
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static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep,
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GElf_Shdr *shp, const char *name,
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size_t *index)
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{
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Elf_Scn *sec = NULL;
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size_t cnt = 1;
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while ((sec = elf_nextscn(elf, sec)) != NULL) {
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char *str;
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gelf_getshdr(sec, shp);
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str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name);
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if (!strcmp(name, str)) {
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if (index)
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*index = cnt;
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break;
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}
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++cnt;
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}
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return sec;
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}
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static int dso__load_sym(struct dso *self, int fd, char *name)
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{
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Elf_Data *symstrs;
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uint32_t nr_syms;
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int err = -1;
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uint32_t index;
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GElf_Ehdr ehdr;
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GElf_Shdr shdr;
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Elf_Data *syms;
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GElf_Sym sym;
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Elf_Scn *sec;
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Elf *elf;
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int nr = 0;
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elf = elf_begin(fd, ELF_C_READ_MMAP, NULL);
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if (elf == NULL) {
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fprintf(stderr, "%s: cannot read %s ELF file.\n",
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__func__, name);
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goto out_close;
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}
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if (gelf_getehdr(elf, &ehdr) == NULL) {
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fprintf(stderr, "%s: cannot get elf header.\n", __func__);
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goto out_elf_end;
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}
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sec = elf_section_by_name(elf, &ehdr, &shdr, ".symtab", NULL);
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if (sec == NULL)
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sec = elf_section_by_name(elf, &ehdr, &shdr, ".dynsym", NULL);
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if (sec == NULL)
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goto out_elf_end;
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syms = elf_getdata(sec, NULL);
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if (syms == NULL)
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goto out_elf_end;
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sec = elf_getscn(elf, shdr.sh_link);
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if (sec == NULL)
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goto out_elf_end;
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symstrs = elf_getdata(sec, NULL);
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if (symstrs == NULL)
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goto out_elf_end;
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nr_syms = shdr.sh_size / shdr.sh_entsize;
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elf_symtab__for_each_symbol(syms, nr_syms, index, sym) {
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struct symbol *f;
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if (!elf_sym__is_function(&sym))
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continue;
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sec = elf_getscn(elf, sym.st_shndx);
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if (!sec)
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goto out_elf_end;
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gelf_getshdr(sec, &shdr);
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sym.st_value -= shdr.sh_addr - shdr.sh_offset;
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f = symbol__new(sym.st_value, sym.st_size,
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elf_sym__name(&sym, symstrs));
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if (!f)
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goto out_elf_end;
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dso__insert_symbol(self, f);
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nr++;
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}
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err = nr;
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out_elf_end:
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elf_end(elf);
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out_close:
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return err;
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}
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static int dso__load(struct dso *self)
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{
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int size = strlen(self->name) + sizeof("/usr/lib/debug%s.debug");
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char *name = malloc(size);
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int variant = 0;
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int ret = -1;
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int fd;
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if (!name)
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return -1;
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more:
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do {
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switch (variant) {
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case 0: /* Fedora */
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snprintf(name, size, "/usr/lib/debug%s.debug", self->name);
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break;
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case 1: /* Ubuntu */
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snprintf(name, size, "/usr/lib/debug%s", self->name);
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break;
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case 2: /* Sane people */
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snprintf(name, size, "%s", self->name);
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break;
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default:
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goto out;
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}
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variant++;
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fd = open(name, O_RDONLY);
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} while (fd < 0);
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ret = dso__load_sym(self, fd, name);
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close(fd);
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/*
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* Some people seem to have debuginfo files _WITHOUT_ debug info!?!?
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*/
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if (!ret)
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goto more;
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out:
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free(name);
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return ret;
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}
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static size_t dso__fprintf(struct dso *self, FILE *fp)
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{
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size_t ret = fprintf(fp, "dso: %s\n", self->name);
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struct rb_node *nd;
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for (nd = rb_first(&self->syms); nd; nd = rb_next(nd)) {
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struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
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ret += symbol__fprintf(pos, fp);
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}
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return ret;
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}
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static LIST_HEAD(dsos);
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static struct dso *kernel_dso;
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@ -418,153 +116,27 @@ static void dsos__fprintf(FILE *fp)
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dso__fprintf(pos, fp);
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}
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static int hex(char ch)
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{
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if ((ch >= '0') && (ch <= '9'))
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return ch - '0';
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if ((ch >= 'a') && (ch <= 'f'))
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return ch - 'a' + 10;
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if ((ch >= 'A') && (ch <= 'F'))
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return ch - 'A' + 10;
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return -1;
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}
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/*
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* While we find nice hex chars, build a long_val.
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* Return number of chars processed.
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*/
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static int hex2long(char *ptr, unsigned long *long_val)
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{
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const char *p = ptr;
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*long_val = 0;
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while (*p) {
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const int hex_val = hex(*p);
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if (hex_val < 0)
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break;
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*long_val = (*long_val << 4) | hex_val;
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p++;
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}
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return p - ptr;
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}
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static int load_kallsyms(void)
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{
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struct rb_node *nd, *prevnd;
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char *line = NULL;
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FILE *file;
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size_t n;
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kernel_dso = dso__new("[kernel]");
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if (kernel_dso == NULL)
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return -1;
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file = fopen("/proc/kallsyms", "r");
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if (file == NULL)
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goto out_delete_dso;
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while (!feof(file)) {
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unsigned long start;
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struct symbol *sym;
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int line_len, len;
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char symbol_type;
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line_len = getline(&line, &n, file);
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if (line_len < 0)
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break;
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if (!line)
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goto out_delete_dso;
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line[--line_len] = '\0'; /* \n */
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len = hex2long(line, &start);
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len++;
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if (len + 2 >= line_len)
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continue;
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symbol_type = toupper(line[len]);
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/*
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* We're interested only in code ('T'ext)
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*/
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if (symbol_type != 'T' && symbol_type != 'W')
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continue;
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/*
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* Well fix up the end later, when we have all sorted.
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*/
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sym = symbol__new(start, 0xdead, line + len + 2);
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if (sym == NULL)
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goto out_delete_dso;
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dso__insert_symbol(kernel_dso, sym);
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}
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/*
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* Now that we have all sorted out, just set the ->end of all
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* symbols
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*/
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prevnd = rb_first(&kernel_dso->syms);
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if (prevnd == NULL)
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goto out_delete_line;
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for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) {
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struct symbol *prev = rb_entry(prevnd, struct symbol, rb_node),
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*curr = rb_entry(nd, struct symbol, rb_node);
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prev->end = curr->start - 1;
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prevnd = nd;
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}
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dsos__add(kernel_dso);
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free(line);
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fclose(file);
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return 0;
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out_delete_line:
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free(line);
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out_delete_dso:
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dso__delete(kernel_dso);
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return -1;
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}
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static int load_kernel(void)
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{
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int fd, nr;
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|
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if (!vmlinux)
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goto kallsyms;
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fd = open(vmlinux, O_RDONLY);
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if (fd < 0)
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goto kallsyms;
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int err = -1;
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|
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kernel_dso = dso__new("[kernel]");
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if (!kernel_dso)
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goto fail_open;
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return -1;
|
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|
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nr = dso__load_sym(kernel_dso, fd, vmlinux);
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if (vmlinux)
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err = dso__load_vmlinux(kernel_dso, vmlinux);
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|
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if (nr <= 0)
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goto fail_load;
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if (err)
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err = dso__load_kallsyms(kernel_dso);
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|
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dsos__add(kernel_dso);
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close(fd);
|
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if (err) {
|
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dso__delete(kernel_dso);
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kernel_dso = NULL;
|
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} else
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dsos__add(kernel_dso);
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|
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return 0;
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|
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fail_load:
|
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dso__delete(kernel_dso);
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fail_open:
|
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close(fd);
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kallsyms:
|
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return load_kallsyms();
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return err;
|
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}
|
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|
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struct map {
|
||||
|
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@ -1050,7 +622,7 @@ static int __cmd_report(void)
|
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}
|
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|
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if (load_kernel() < 0) {
|
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perror("failed to open kallsyms");
|
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perror("failed to load kernel symbols");
|
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return EXIT_FAILURE;
|
||||
}
|
||||
|
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|
|
@ -1247,7 +819,7 @@ static const struct option options[] = {
|
|||
|
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int cmd_report(int argc, const char **argv, const char *prefix)
|
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{
|
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elf_version(EV_CURRENT);
|
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symbol__init();
|
||||
|
||||
page_size = getpagesize();
|
||||
|
||||
|
|
|
|||
|
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@ -0,0 +1,421 @@
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#include "util.h"
|
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#include "../perf.h"
|
||||
#include "symbol.h"
|
||||
|
||||
#include <libelf.h>
|
||||
#include <gelf.h>
|
||||
#include <elf.h>
|
||||
|
||||
static struct symbol *symbol__new(uint64_t start, uint64_t len,
|
||||
const char *name)
|
||||
{
|
||||
struct symbol *self = malloc(sizeof(*self) + strlen(name) + 1);
|
||||
|
||||
if (self != NULL) {
|
||||
self->start = start;
|
||||
self->end = start + len;
|
||||
strcpy(self->name, name);
|
||||
}
|
||||
|
||||
return self;
|
||||
}
|
||||
|
||||
static void symbol__delete(struct symbol *self)
|
||||
{
|
||||
free(self);
|
||||
}
|
||||
|
||||
static size_t symbol__fprintf(struct symbol *self, FILE *fp)
|
||||
{
|
||||
return fprintf(fp, " %llx-%llx %s\n",
|
||||
self->start, self->end, self->name);
|
||||
}
|
||||
|
||||
struct dso *dso__new(const char *name)
|
||||
{
|
||||
struct dso *self = malloc(sizeof(*self) + strlen(name) + 1);
|
||||
|
||||
if (self != NULL) {
|
||||
strcpy(self->name, name);
|
||||
self->syms = RB_ROOT;
|
||||
}
|
||||
|
||||
return self;
|
||||
}
|
||||
|
||||
static void dso__delete_symbols(struct dso *self)
|
||||
{
|
||||
struct symbol *pos;
|
||||
struct rb_node *next = rb_first(&self->syms);
|
||||
|
||||
while (next) {
|
||||
pos = rb_entry(next, struct symbol, rb_node);
|
||||
next = rb_next(&pos->rb_node);
|
||||
symbol__delete(pos);
|
||||
}
|
||||
}
|
||||
|
||||
void dso__delete(struct dso *self)
|
||||
{
|
||||
dso__delete_symbols(self);
|
||||
free(self);
|
||||
}
|
||||
|
||||
static void dso__insert_symbol(struct dso *self, struct symbol *sym)
|
||||
{
|
||||
struct rb_node **p = &self->syms.rb_node;
|
||||
struct rb_node *parent = NULL;
|
||||
const uint64_t ip = sym->start;
|
||||
struct symbol *s;
|
||||
|
||||
while (*p != NULL) {
|
||||
parent = *p;
|
||||
s = rb_entry(parent, struct symbol, rb_node);
|
||||
if (ip < s->start)
|
||||
p = &(*p)->rb_left;
|
||||
else
|
||||
p = &(*p)->rb_right;
|
||||
}
|
||||
rb_link_node(&sym->rb_node, parent, p);
|
||||
rb_insert_color(&sym->rb_node, &self->syms);
|
||||
}
|
||||
|
||||
struct symbol *dso__find_symbol(struct dso *self, uint64_t ip)
|
||||
{
|
||||
struct rb_node *n;
|
||||
|
||||
if (self == NULL)
|
||||
return NULL;
|
||||
|
||||
n = self->syms.rb_node;
|
||||
|
||||
while (n) {
|
||||
struct symbol *s = rb_entry(n, struct symbol, rb_node);
|
||||
|
||||
if (ip < s->start)
|
||||
n = n->rb_left;
|
||||
else if (ip > s->end)
|
||||
n = n->rb_right;
|
||||
else
|
||||
return s;
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
size_t dso__fprintf(struct dso *self, FILE *fp)
|
||||
{
|
||||
size_t ret = fprintf(fp, "dso: %s\n", self->name);
|
||||
|
||||
struct rb_node *nd;
|
||||
for (nd = rb_first(&self->syms); nd; nd = rb_next(nd)) {
|
||||
struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
|
||||
ret += symbol__fprintf(pos, fp);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int hex(char ch)
|
||||
{
|
||||
if ((ch >= '0') && (ch <= '9'))
|
||||
return ch - '0';
|
||||
if ((ch >= 'a') && (ch <= 'f'))
|
||||
return ch - 'a' + 10;
|
||||
if ((ch >= 'A') && (ch <= 'F'))
|
||||
return ch - 'A' + 10;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* While we find nice hex chars, build a long_val.
|
||||
* Return number of chars processed.
|
||||
*/
|
||||
static int hex2long(char *ptr, unsigned long *long_val)
|
||||
{
|
||||
const char *p = ptr;
|
||||
*long_val = 0;
|
||||
|
||||
while (*p) {
|
||||
const int hex_val = hex(*p);
|
||||
|
||||
if (hex_val < 0)
|
||||
break;
|
||||
|
||||
*long_val = (*long_val << 4) | hex_val;
|
||||
p++;
|
||||
}
|
||||
|
||||
return p - ptr;
|
||||
}
|
||||
|
||||
int dso__load_kallsyms(struct dso *self)
|
||||
{
|
||||
struct rb_node *nd, *prevnd;
|
||||
char *line = NULL;
|
||||
size_t n;
|
||||
FILE *file = fopen("/proc/kallsyms", "r");
|
||||
|
||||
if (file == NULL)
|
||||
goto out_failure;
|
||||
|
||||
while (!feof(file)) {
|
||||
unsigned long start;
|
||||
struct symbol *sym;
|
||||
int line_len, len;
|
||||
char symbol_type;
|
||||
|
||||
line_len = getline(&line, &n, file);
|
||||
if (line_len < 0)
|
||||
break;
|
||||
|
||||
if (!line)
|
||||
goto out_failure;
|
||||
|
||||
line[--line_len] = '\0'; /* \n */
|
||||
|
||||
len = hex2long(line, &start);
|
||||
|
||||
len++;
|
||||
if (len + 2 >= line_len)
|
||||
continue;
|
||||
|
||||
symbol_type = toupper(line[len]);
|
||||
/*
|
||||
* We're interested only in code ('T'ext)
|
||||
*/
|
||||
if (symbol_type != 'T' && symbol_type != 'W')
|
||||
continue;
|
||||
/*
|
||||
* Well fix up the end later, when we have all sorted.
|
||||
*/
|
||||
sym = symbol__new(start, 0xdead, line + len + 2);
|
||||
|
||||
if (sym == NULL)
|
||||
goto out_delete_line;
|
||||
|
||||
dso__insert_symbol(self, sym);
|
||||
}
|
||||
|
||||
/*
|
||||
* Now that we have all sorted out, just set the ->end of all
|
||||
* symbols
|
||||
*/
|
||||
prevnd = rb_first(&self->syms);
|
||||
|
||||
if (prevnd == NULL)
|
||||
goto out_delete_line;
|
||||
|
||||
for (nd = rb_next(prevnd); nd; nd = rb_next(nd)) {
|
||||
struct symbol *prev = rb_entry(prevnd, struct symbol, rb_node),
|
||||
*curr = rb_entry(nd, struct symbol, rb_node);
|
||||
|
||||
prev->end = curr->start - 1;
|
||||
prevnd = nd;
|
||||
}
|
||||
|
||||
free(line);
|
||||
fclose(file);
|
||||
|
||||
return 0;
|
||||
|
||||
out_delete_line:
|
||||
free(line);
|
||||
out_failure:
|
||||
return -1;
|
||||
}
|
||||
|
||||
/**
|
||||
* elf_symtab__for_each_symbol - iterate thru all the symbols
|
||||
*
|
||||
* @self: struct elf_symtab instance to iterate
|
||||
* @index: uint32_t index
|
||||
* @sym: GElf_Sym iterator
|
||||
*/
|
||||
#define elf_symtab__for_each_symbol(syms, nr_syms, index, sym) \
|
||||
for (index = 0, gelf_getsym(syms, index, &sym);\
|
||||
index < nr_syms; \
|
||||
index++, gelf_getsym(syms, index, &sym))
|
||||
|
||||
static inline uint8_t elf_sym__type(const GElf_Sym *sym)
|
||||
{
|
||||
return GELF_ST_TYPE(sym->st_info);
|
||||
}
|
||||
|
||||
static inline int elf_sym__is_function(const GElf_Sym *sym)
|
||||
{
|
||||
return elf_sym__type(sym) == STT_FUNC &&
|
||||
sym->st_name != 0 &&
|
||||
sym->st_shndx != SHN_UNDEF &&
|
||||
sym->st_size != 0;
|
||||
}
|
||||
|
||||
static inline const char *elf_sym__name(const GElf_Sym *sym,
|
||||
const Elf_Data *symstrs)
|
||||
{
|
||||
return symstrs->d_buf + sym->st_name;
|
||||
}
|
||||
|
||||
static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep,
|
||||
GElf_Shdr *shp, const char *name,
|
||||
size_t *index)
|
||||
{
|
||||
Elf_Scn *sec = NULL;
|
||||
size_t cnt = 1;
|
||||
|
||||
while ((sec = elf_nextscn(elf, sec)) != NULL) {
|
||||
char *str;
|
||||
|
||||
gelf_getshdr(sec, shp);
|
||||
str = elf_strptr(elf, ep->e_shstrndx, shp->sh_name);
|
||||
if (!strcmp(name, str)) {
|
||||
if (index)
|
||||
*index = cnt;
|
||||
break;
|
||||
}
|
||||
++cnt;
|
||||
}
|
||||
|
||||
return sec;
|
||||
}
|
||||
|
||||
static int dso__load_sym(struct dso *self, int fd, const char *name)
|
||||
{
|
||||
Elf_Data *symstrs;
|
||||
uint32_t nr_syms;
|
||||
int err = -1;
|
||||
uint32_t index;
|
||||
GElf_Ehdr ehdr;
|
||||
GElf_Shdr shdr;
|
||||
Elf_Data *syms;
|
||||
GElf_Sym sym;
|
||||
Elf_Scn *sec;
|
||||
Elf *elf;
|
||||
int nr = 0;
|
||||
|
||||
elf = elf_begin(fd, ELF_C_READ_MMAP, NULL);
|
||||
if (elf == NULL) {
|
||||
fprintf(stderr, "%s: cannot read %s ELF file.\n",
|
||||
__func__, name);
|
||||
goto out_close;
|
||||
}
|
||||
|
||||
if (gelf_getehdr(elf, &ehdr) == NULL) {
|
||||
fprintf(stderr, "%s: cannot get elf header.\n", __func__);
|
||||
goto out_elf_end;
|
||||
}
|
||||
|
||||
sec = elf_section_by_name(elf, &ehdr, &shdr, ".symtab", NULL);
|
||||
if (sec == NULL)
|
||||
sec = elf_section_by_name(elf, &ehdr, &shdr, ".dynsym", NULL);
|
||||
|
||||
if (sec == NULL)
|
||||
goto out_elf_end;
|
||||
|
||||
syms = elf_getdata(sec, NULL);
|
||||
if (syms == NULL)
|
||||
goto out_elf_end;
|
||||
|
||||
sec = elf_getscn(elf, shdr.sh_link);
|
||||
if (sec == NULL)
|
||||
goto out_elf_end;
|
||||
|
||||
symstrs = elf_getdata(sec, NULL);
|
||||
if (symstrs == NULL)
|
||||
goto out_elf_end;
|
||||
|
||||
nr_syms = shdr.sh_size / shdr.sh_entsize;
|
||||
|
||||
elf_symtab__for_each_symbol(syms, nr_syms, index, sym) {
|
||||
struct symbol *f;
|
||||
|
||||
if (!elf_sym__is_function(&sym))
|
||||
continue;
|
||||
|
||||
sec = elf_getscn(elf, sym.st_shndx);
|
||||
if (!sec)
|
||||
goto out_elf_end;
|
||||
|
||||
gelf_getshdr(sec, &shdr);
|
||||
sym.st_value -= shdr.sh_addr - shdr.sh_offset;
|
||||
|
||||
f = symbol__new(sym.st_value, sym.st_size,
|
||||
elf_sym__name(&sym, symstrs));
|
||||
if (!f)
|
||||
goto out_elf_end;
|
||||
|
||||
dso__insert_symbol(self, f);
|
||||
|
||||
nr++;
|
||||
}
|
||||
|
||||
err = nr;
|
||||
out_elf_end:
|
||||
elf_end(elf);
|
||||
out_close:
|
||||
return err;
|
||||
}
|
||||
|
||||
int dso__load(struct dso *self)
|
||||
{
|
||||
int size = strlen(self->name) + sizeof("/usr/lib/debug%s.debug");
|
||||
char *name = malloc(size);
|
||||
int variant = 0;
|
||||
int ret = -1;
|
||||
int fd;
|
||||
|
||||
if (!name)
|
||||
return -1;
|
||||
|
||||
more:
|
||||
do {
|
||||
switch (variant) {
|
||||
case 0: /* Fedora */
|
||||
snprintf(name, size, "/usr/lib/debug%s.debug", self->name);
|
||||
break;
|
||||
case 1: /* Ubuntu */
|
||||
snprintf(name, size, "/usr/lib/debug%s", self->name);
|
||||
break;
|
||||
case 2: /* Sane people */
|
||||
snprintf(name, size, "%s", self->name);
|
||||
break;
|
||||
|
||||
default:
|
||||
goto out;
|
||||
}
|
||||
variant++;
|
||||
|
||||
fd = open(name, O_RDONLY);
|
||||
} while (fd < 0);
|
||||
|
||||
ret = dso__load_sym(self, fd, name);
|
||||
close(fd);
|
||||
|
||||
/*
|
||||
* Some people seem to have debuginfo files _WITHOUT_ debug info!?!?
|
||||
*/
|
||||
if (!ret)
|
||||
goto more;
|
||||
|
||||
out:
|
||||
free(name);
|
||||
return ret;
|
||||
}
|
||||
|
||||
int dso__load_vmlinux(struct dso *self, const char *vmlinux)
|
||||
{
|
||||
int err, fd = open(vmlinux, O_RDONLY);
|
||||
|
||||
if (fd < 0)
|
||||
return -1;
|
||||
|
||||
err = dso__load_sym(self, fd, vmlinux);
|
||||
close(fd);
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
void symbol__init(void)
|
||||
{
|
||||
elf_version(EV_CURRENT);
|
||||
}
|
||||
|
|
@ -0,0 +1,33 @@
|
|||
#ifndef _PERF_SYMBOL_
|
||||
#define _PERF_SYMBOL_ 1
|
||||
|
||||
#include <linux/types.h>
|
||||
#include "list.h"
|
||||
#include "rbtree.h"
|
||||
|
||||
struct symbol {
|
||||
struct rb_node rb_node;
|
||||
__u64 start;
|
||||
__u64 end;
|
||||
char name[0];
|
||||
};
|
||||
|
||||
struct dso {
|
||||
struct list_head node;
|
||||
struct rb_root syms;
|
||||
char name[0];
|
||||
};
|
||||
|
||||
struct dso *dso__new(const char *name);
|
||||
void dso__delete(struct dso *self);
|
||||
|
||||
struct symbol *dso__find_symbol(struct dso *self, uint64_t ip);
|
||||
|
||||
int dso__load_kallsyms(struct dso *self);
|
||||
int dso__load_vmlinux(struct dso *self, const char *vmlinux);
|
||||
int dso__load(struct dso *self);
|
||||
|
||||
size_t dso__fprintf(struct dso *self, FILE *fp);
|
||||
|
||||
void symbol__init(void);
|
||||
#endif /* _PERF_SYMBOL_ */
|
||||
Loading…
Reference in New Issue