diff options
Diffstat (limited to 'tools/perf/util/symbol-elf.c')
-rw-r--r-- | tools/perf/util/symbol-elf.c | 119 |
1 files changed, 90 insertions, 29 deletions
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index a9a194d49c1b..6974b2a44ee7 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -536,24 +536,25 @@ static int dso__swap_init(struct dso *dso, unsigned char eidata) return 0; } -int dso__load_sym(struct dso *dso, struct map *map, const char *name, int fd, - symbol_filter_t filter, int kmodule, int want_symtab) + +void symsrc__destroy(struct symsrc *ss) +{ + free(ss->name); + elf_end(ss->elf); + close(ss->fd); +} + +int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name, + enum dso_binary_type type) { - struct kmap *kmap = dso->kernel ? map__kmap(map) : NULL; - struct map *curr_map = map; - struct dso *curr_dso = dso; - Elf_Data *symstrs, *secstrs; - uint32_t nr_syms; int err = -1; - uint32_t idx; GElf_Ehdr ehdr; - GElf_Shdr shdr, opdshdr; - Elf_Data *syms, *opddata = NULL; - GElf_Sym sym; - Elf_Scn *sec, *sec_strndx, *opdsec; Elf *elf; - int nr = 0; - size_t opdidx = 0; + int fd; + + fd = open(name, O_RDONLY); + if (fd < 0) + return -1; elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL); if (elf == NULL) { @@ -580,19 +581,88 @@ int dso__load_sym(struct dso *dso, struct map *map, const char *name, int fd, goto out_elf_end; } - sec = elf_section_by_name(elf, &ehdr, &shdr, ".symtab", NULL); + ss->symtab = elf_section_by_name(elf, &ehdr, &ss->symshdr, ".symtab", + NULL); + if (ss->symshdr.sh_type != SHT_SYMTAB) + ss->symtab = NULL; + + ss->dynsym_idx = 0; + ss->dynsym = elf_section_by_name(elf, &ehdr, &ss->dynshdr, ".dynsym", + &ss->dynsym_idx); + if (ss->dynshdr.sh_type != SHT_DYNSYM) + ss->dynsym = NULL; + + ss->opdidx = 0; + ss->opdsec = elf_section_by_name(elf, &ehdr, &ss->opdshdr, ".opd", + &ss->opdidx); + if (ss->opdshdr.sh_type != SHT_PROGBITS) + ss->opdsec = NULL; + + if (dso->kernel == DSO_TYPE_USER) { + GElf_Shdr shdr; + ss->adjust_symbols = (ehdr.e_type == ET_EXEC || + elf_section_by_name(elf, &ehdr, &shdr, + ".gnu.prelink_undo", + NULL) != NULL); + } else { + ss->adjust_symbols = 0; + } + + ss->name = strdup(name); + if (!ss->name) + goto out_elf_end; + + ss->elf = elf; + ss->fd = fd; + ss->ehdr = ehdr; + ss->type = type; + + return 0; + +out_elf_end: + elf_end(elf); +out_close: + close(fd); + return err; +} + +int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *ss, + symbol_filter_t filter, int kmodule, int want_symtab) +{ + struct kmap *kmap = dso->kernel ? map__kmap(map) : NULL; + struct map *curr_map = map; + struct dso *curr_dso = dso; + Elf_Data *symstrs, *secstrs; + uint32_t nr_syms; + int err = -1; + uint32_t idx; + GElf_Ehdr ehdr; + GElf_Shdr shdr, opdshdr; + Elf_Data *syms, *opddata = NULL; + GElf_Sym sym; + Elf_Scn *sec, *sec_strndx, *opdsec; + Elf *elf; + int nr = 0; + size_t opdidx = 0; + + elf = ss->elf; + ehdr = ss->ehdr; + sec = ss->symtab; + shdr = ss->symshdr; + if (sec == NULL) { if (want_symtab) goto out_elf_end; - sec = elf_section_by_name(elf, &ehdr, &shdr, ".dynsym", NULL); + sec = ss->dynsym; + shdr = ss->dynshdr; if (sec == NULL) goto out_elf_end; } - opdsec = elf_section_by_name(elf, &ehdr, &opdshdr, ".opd", &opdidx); - if (opdshdr.sh_type != SHT_PROGBITS) - opdsec = NULL; + opdsec = ss->opdsec; + opdshdr = ss->opdshdr; + opdidx = ss->opdidx; if (opdsec) opddata = elf_rawdata(opdsec, NULL); @@ -619,14 +689,7 @@ int dso__load_sym(struct dso *dso, struct map *map, const char *name, int fd, nr_syms = shdr.sh_size / shdr.sh_entsize; memset(&sym, 0, sizeof(sym)); - if (dso->kernel == DSO_TYPE_USER) { - dso->adjust_symbols = (ehdr.e_type == ET_EXEC || - elf_section_by_name(elf, &ehdr, &shdr, - ".gnu.prelink_undo", - NULL) != NULL); - } else { - dso->adjust_symbols = 0; - } + dso->adjust_symbols = ss->adjust_symbols; elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) { struct symbol *f; const char *elf_name = elf_sym__name(&sym, symstrs); @@ -770,8 +833,6 @@ new_symbol: } err = nr; out_elf_end: - elf_end(elf); -out_close: return err; } |