perf symbol: Look for ImageBase in PE file to compute .text offset

[linux-2.6-microblaze.git] / tools / perf / util / symbol.c

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 77fc46c..0fc9a54 100644 (file)
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1581,10 +1581,6 @@ int dso__load_bfd_symbols(struct dso *dso, const char *debugfile)
        if (bfd_get_flavour(abfd) == bfd_target_elf_flavour)
                goto out_close;
 
-       section = bfd_get_section_by_name(abfd, ".text");
-       if (section)
-               dso->text_offset = section->vma - section->filepos;
-
        symbols_size = bfd_get_symtab_upper_bound(abfd);
        if (symbols_size == 0) {
                bfd_close(abfd);
@@ -1602,6 +1598,22 @@ int dso__load_bfd_symbols(struct dso *dso, const char *debugfile)
        if (symbols_count < 0)
                goto out_free;
 
+       section = bfd_get_section_by_name(abfd, ".text");
+       if (section) {
+               for (i = 0; i < symbols_count; ++i) {
+                       if (!strcmp(bfd_asymbol_name(symbols[i]), "__ImageBase") ||
+                           !strcmp(bfd_asymbol_name(symbols[i]), "__image_base__"))
+                               break;
+               }
+               if (i < symbols_count) {
+                       /* PE symbols can only have 4 bytes, so use .text high bits */
+                       dso->text_offset = section->vma - (u32)section->vma;
+                       dso->text_offset += (u32)bfd_asymbol_value(symbols[i]);
+               } else {
+                       dso->text_offset = section->vma - section->filepos;
+               }
+       }
+
        qsort(symbols, symbols_count, sizeof(asymbol *), bfd_symbols__cmpvalue);
 
 #ifdef bfd_get_section