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authorJon Turney <jon.turney@dronecode.org.uk>2014-05-16 15:34:13 +0100
committerNick Clifton <nickc@redhat.com>2014-05-16 15:34:13 +0100
commit6e6e7cfc78e3ae1f4b670fc42d3b4e113d57a62b (patch)
treea793c7a01c0387aebbb964c4d3bda9c156bf8cb1 /bfd/peXXigen.c
parent856ea05ccf051d4d86f422552f5cdfa83659dd6b (diff)
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This fixes a few issues with pe/coff build-ids that were discovered since the
original patches were posted: pe/coff: Display GUID build-id in the conventional way pe/coff: Don't interpret debug directory in section with no contents pe/coff: Keep .build-id with --only-keep-debug pe/coff: Don't break .build-id with objcopy/strip * peXXigen.c (pe_print_debugdata): Don't interpret debug directory in a section with no contents. (is_vma_in_section, find_section_by_vma): New functions. (_bfd_XX_bfd_copy_private_bfd_data_common): Recalculate file offsets in the debug directory. (_bfd_XXi_slurp_codeview_record, _bfd_XXi_write_codeview_record): Byte-swap GUID from little-endian to big-endian order for consistent and conventional display. * objcopy.c (is_nondebug_keep_contents_section): New function. (setup_section): Use it.
Diffstat (limited to 'bfd/peXXigen.c')
-rw-r--r--bfd/peXXigen.c82
1 files changed, 79 insertions, 3 deletions
diff --git a/bfd/peXXigen.c b/bfd/peXXigen.c
index 8f6f0eb..dba0edd 100644
--- a/bfd/peXXigen.c
+++ b/bfd/peXXigen.c
@@ -1112,7 +1112,7 @@ _bfd_XXi_slurp_codeview_record (bfd * abfd, file_ptr where, unsigned long length
if (bfd_bread (buffer, 256, abfd) < 4)
return NULL;
- /* ensure null termination of filename */
+ /* Ensure null termination of filename. */
buffer[256] = '\0';
cvinfo->CVSignature = H_GET_32(abfd, buffer);
@@ -1124,7 +1124,15 @@ _bfd_XXi_slurp_codeview_record (bfd * abfd, file_ptr where, unsigned long length
CV_INFO_PDB70 *cvinfo70 = (CV_INFO_PDB70 *)(buffer);
cvinfo->Age = H_GET_32(abfd, cvinfo70->Age);
- memcpy (cvinfo->Signature, cvinfo70->Signature, CV_INFO_SIGNATURE_LENGTH);
+
+ /* A GUID consists of 4,2,2 byte values in little-endian order, followed
+ by 8 single bytes. Byte swap them so we can conveniently treat the GUID
+ as 16 bytes in big-endian order. */
+ bfd_putb32 (bfd_getl32 (cvinfo70->Signature), cvinfo->Signature);
+ bfd_putb16 (bfd_getl16 (&(cvinfo70->Signature[4])), &(cvinfo->Signature[4]));
+ bfd_putb16 (bfd_getl16 (&(cvinfo70->Signature[6])), &(cvinfo->Signature[6]));
+ memcpy (&(cvinfo->Signature[8]), &(cvinfo70->Signature[8]), 8);
+
cvinfo->SignatureLength = CV_INFO_SIGNATURE_LENGTH;
// cvinfo->PdbFileName = cvinfo70->PdbFileName;
@@ -1157,7 +1165,14 @@ _bfd_XXi_write_codeview_record (bfd * abfd, file_ptr where, CODEVIEW_INFO *cvinf
cvinfo70 = (CV_INFO_PDB70 *) buffer;
H_PUT_32 (abfd, CVINFO_PDB70_CVSIGNATURE, cvinfo70->CvSignature);
- memcpy (&(cvinfo70->Signature), cvinfo->Signature, CV_INFO_SIGNATURE_LENGTH);
+
+ /* Byte swap the GUID from 16 bytes in big-endian order to 4,2,2 byte values
+ in little-endian order, followed by 8 single bytes. */
+ bfd_putl32 (bfd_getb32 (cvinfo->Signature), cvinfo70->Signature);
+ bfd_putl16 (bfd_getb16 (&(cvinfo->Signature[4])), &(cvinfo70->Signature[4]));
+ bfd_putl16 (bfd_getb16 (&(cvinfo->Signature[6])), &(cvinfo70->Signature[6]));
+ memcpy (&(cvinfo70->Signature[8]), &(cvinfo->Signature[8]), 8);
+
H_PUT_32 (abfd, cvinfo->Age, cvinfo70->Age);
cvinfo70->PdbFileName[0] = '\0';
@@ -2446,6 +2461,13 @@ pe_print_debugdata (bfd * abfd, void * vfile)
_("\nThere is a debug directory, but the section containing it could not be found\n"));
return TRUE;
}
+ else if (!(section->flags & SEC_HAS_CONTENTS))
+ {
+ fprintf (file,
+ _("\nThere is a debug directory in %s, but that section has no contents\n"),
+ section->name);
+ return TRUE;
+ }
fprintf (file, _("\nThere is a debug directory in %s at 0x%lx\n\n"),
section->name, (unsigned long) addr);
@@ -2689,6 +2711,19 @@ _bfd_XX_print_private_bfd_data_common (bfd * abfd, void * vfile)
return TRUE;
}
+static bfd_boolean
+is_vma_in_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sect, void *obj)
+{
+ bfd_vma addr = * (bfd_vma *) obj;
+ return (addr >= sect->vma) && (addr < (sect->vma + sect->size));
+}
+
+static asection *
+find_section_by_vma (bfd *abfd, bfd_vma addr)
+{
+ return bfd_sections_find_if (abfd, is_vma_in_section, (void *) & addr);
+}
+
/* Copy any private info we understand from the input bfd
to the output bfd. */
@@ -2727,6 +2762,47 @@ _bfd_XX_bfd_copy_private_bfd_data_common (bfd * ibfd, bfd * obfd)
&& ! (pe_data (ibfd)->real_flags & IMAGE_FILE_RELOCS_STRIPPED))
pe_data (obfd)->dont_strip_reloc = 1;
+ /* The file offsets contained in the debug directory need rewriting. */
+ if (ope->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size != 0)
+ {
+ bfd_vma addr = ope->pe_opthdr.DataDirectory[PE_DEBUG_DATA].VirtualAddress
+ + ope->pe_opthdr.ImageBase;
+ asection *section = find_section_by_vma (obfd, addr);
+ bfd_byte *data;
+
+ if (section && bfd_malloc_and_get_section (obfd, section, &data))
+ {
+ unsigned int i;
+ struct external_IMAGE_DEBUG_DIRECTORY *dd =
+ (struct external_IMAGE_DEBUG_DIRECTORY *)(data + (addr - section->vma));
+
+ for (i = 0; i < ope->pe_opthdr.DataDirectory[PE_DEBUG_DATA].Size
+ / sizeof (struct external_IMAGE_DEBUG_DIRECTORY); i++)
+ {
+ asection *ddsection;
+ struct external_IMAGE_DEBUG_DIRECTORY *edd = &(dd[i]);
+ struct internal_IMAGE_DEBUG_DIRECTORY idd;
+
+ _bfd_XXi_swap_debugdir_in (obfd, edd, &idd);
+
+ if (idd.AddressOfRawData == 0)
+ continue; /* RVA 0 means only offset is valid, not handled yet. */
+
+ ddsection = find_section_by_vma (obfd, idd.AddressOfRawData + ope->pe_opthdr.ImageBase);
+ if (!ddsection)
+ continue; /* Not in a section! */
+
+ idd.PointerToRawData = ddsection->filepos + (idd.AddressOfRawData
+ + ope->pe_opthdr.ImageBase) - ddsection->vma;
+
+ _bfd_XXi_swap_debugdir_out (obfd, &idd, edd);
+ }
+
+ if (!bfd_set_section_contents (obfd, section, data, 0, section->size))
+ _bfd_error_handler (_("Failed to update file offsets in debug directory"));
+ }
+ }
+
return TRUE;
}