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yaml
---
r: 205263
b: refs/heads/master
c: 70c3856
h: refs/heads/master
i:
  205261: cf07e50
  205259: d4a724a
  205255: 6954deb
  205247: 146a675
v: v3
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Eric B Munson authored and Arnaldo Carvalho de Melo committed Jun 17, 2010
1 parent 9304e7c commit 82c1e01
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Showing 2 changed files with 35 additions and 4 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: cf103a14dd2ab23f847e998c8881ea4a5f8090bf
refs/heads/master: 70c3856b2f1304e0abc65f1b96a8c60ddfc0fb9e
37 changes: 34 additions & 3 deletions trunk/tools/perf/util/symbol.c
Original file line number Diff line number Diff line change
Expand Up @@ -933,6 +933,25 @@ static bool elf_sec__is_a(GElf_Shdr *self, Elf_Data *secstrs, enum map_type type
}
}

static size_t elf_addr_to_index(Elf *elf, GElf_Addr addr)
{
Elf_Scn *sec = NULL;
GElf_Shdr shdr;
size_t cnt = 1;

while ((sec = elf_nextscn(elf, sec)) != NULL) {
gelf_getshdr(sec, &shdr);

if ((addr >= shdr.sh_addr) &&
(addr < (shdr.sh_addr + shdr.sh_size)))
return cnt;

++cnt;
}

return -1;
}

static int dso__load_sym(struct dso *self, struct map *map, const char *name,
int fd, symbol_filter_t filter, int kmodule)
{
Expand All @@ -944,12 +963,13 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
int err = -1;
uint32_t idx;
GElf_Ehdr ehdr;
GElf_Shdr shdr;
Elf_Data *syms;
GElf_Shdr shdr, opdshdr;
Elf_Data *syms, *opddata = NULL;
GElf_Sym sym;
Elf_Scn *sec, *sec_strndx;
Elf_Scn *sec, *sec_strndx, *opdsec;
Elf *elf;
int nr = 0;
size_t opdidx = 0;

elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL);
if (elf == NULL) {
Expand All @@ -969,6 +989,10 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
goto out_elf_end;
}

opdsec = elf_section_by_name(elf, &ehdr, &opdshdr, ".opd", &opdidx);
if (opdsec)
opddata = elf_rawdata(opdsec, NULL);

syms = elf_getdata(sec, NULL);
if (syms == NULL)
goto out_elf_end;
Expand Down Expand Up @@ -1013,6 +1037,13 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
if (!is_label && !elf_sym__is_a(&sym, map->type))
continue;

if (opdsec && sym.st_shndx == opdidx) {
u32 offset = sym.st_value - opdshdr.sh_addr;
u64 *opd = opddata->d_buf + offset;
sym.st_value = *opd;
sym.st_shndx = elf_addr_to_index(elf, sym.st_value);
}

sec = elf_getscn(elf, sym.st_shndx);
if (!sec)
goto out_elf_end;
Expand Down

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