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authorNick Clifton <nickc@redhat.com>2015-05-15 11:21:38 +0100
committerNick Clifton <nickc@redhat.com>2015-05-15 11:24:33 +0100
commitd1c4b12b9d48d9266b78e2c22d70aa25830b9f8f (patch)
tree3f096548d3838f9387b3b8b7175a6a231f335c76 /binutils/objdump.c
parent4bc0608a8b693f033555aa5705fdd5fc44cb9a9a (diff)
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Fix PR18374 by making readelf and objdump ignore end-of-list markers in the .debug_loc section if there are relocations against them.
PR binutils/18374 bin * dwarf.h (struct dwarf_section): Add reloc_info and num_relocs fields. (struct dwarf_section_display): Change bitfield to boolean. (reloc_at): Add prototype. * dwarf.c (display_loc_list): Ignore list terminators if there are relocs against them. (display_debug_loc): Issue a warning if there are relocs against the .debug_loc section. (display_displays): Initialise reloc_info and num_relocs fields. * objdump.c (load_specific_debug_section): Initialise reloc_info and num_relocs fields. (reloc_at): New function. * readelf.c (is_32bit_abs_reloc): Add IA64's R_IA64_DIS32LSB reloc. (reloc_at): New function. (apply_relocations): Add relocs_return and num_relocs_return parameters. Fill them in with the loaded relocs if non-NULL. (dump_section_as_bytes): Update call to apply_relocations. (load_specific_debug_section): Initialise reloc_info and num_relocs fields. tests * binutils-all/pr18374.s: New test file. * binutils-all/readelf.exp: Assemble and run the new test. * binutils-all/readelf.pr18374: Expected output from readelf.
Diffstat (limited to 'binutils/objdump.c')
-rw-r--r--binutils/objdump.c42
1 files changed, 41 insertions, 1 deletions
diff --git a/binutils/objdump.c b/binutils/objdump.c
index f87c9c3..f51b6f5 100644
--- a/binutils/objdump.c
+++ b/binutils/objdump.c
@@ -2278,6 +2278,8 @@ load_specific_debug_section (enum dwarf_section_display_enum debug,
if (section->start != NULL)
return 1;
+ section->reloc_info = NULL;
+ section->num_relocs = 0;
section->address = bfd_get_section_vma (abfd, sec);
section->size = bfd_get_section_size (sec);
section->start = NULL;
@@ -2308,11 +2310,49 @@ load_specific_debug_section (enum dwarf_section_display_enum debug,
section->name);
return 0;
}
- }
+
+ long reloc_size;
+
+ reloc_size = bfd_get_reloc_upper_bound (abfd, sec);
+ if (reloc_size > 0)
+ {
+ unsigned long reloc_count;
+ arelent **relocs;
+
+ relocs = (arelent **) xmalloc (reloc_size);
+
+ reloc_count = bfd_canonicalize_reloc (abfd, sec, relocs, NULL);
+ if (reloc_count == 0)
+ free (relocs);
+ else
+ {
+ section->reloc_info = relocs;
+ section->num_relocs = reloc_count;
+ }
+ }
+ }
return 1;
}
+bfd_boolean
+reloc_at (struct dwarf_section * dsec, dwarf_vma offset)
+{
+ arelent ** relocs;
+ arelent * rp;
+
+ if (dsec == NULL || dsec->reloc_info == NULL)
+ return FALSE;
+
+ relocs = (arelent **) dsec->reloc_info;
+
+ for (; (rp = * relocs) != NULL; ++ relocs)
+ if (rp->address == offset)
+ return TRUE;
+
+ return FALSE;
+}
+
int
load_debug_section (enum dwarf_section_display_enum debug, void *file)
{