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* elf-bfd.h (struct eh_cie_fde): Add need_relative and

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need_lsda_relative.
	* elf-eh-frame.c (_bfd_elf_eh_frame_section_offset): Set
	need_relative or need_lsda_relative if we are processing an
	offset for a reloc on a FDE initial loc or LSDA field
	respectively.
	(_bfd_elf_write_section_eh_frame): Test need_relative and
	need_lsda_relative in place of corresponding make_* field
	when deciding to use pc-relative encodings.
This commit is contained in:
Alan Modra 2004-10-01 00:51:37 +00:00
parent 2de118d36e
commit 8935b81f1f
3 changed files with 29 additions and 9 deletions
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12
bfd/ChangeLog
View File

@ -1,3 +1,15 @@
2004-10-01 Alan Modra <amodra@bigpond.net.au>
* elf-bfd.h (struct eh_cie_fde): Add need_relative and
need_lsda_relative.
* elf-eh-frame.c (_bfd_elf_eh_frame_section_offset): Set
need_relative or need_lsda_relative if we are processing an
offset for a reloc on a FDE initial loc or LSDA field
respectively.
(_bfd_elf_write_section_eh_frame): Test need_relative and
need_lsda_relative in place of corresponding make_* field
when deciding to use pc-relative encodings.
2004-09-30 Paul Brook <paul@codesourcery.com>
* elf32-arm.h (bfd_elf32_arm_set_target_relocs): Handle "abs"

2
bfd/elf-bfd.h
View File

@ -297,6 +297,8 @@ struct eh_cie_fde
unsigned int removed : 1;
unsigned int make_relative : 1;
unsigned int make_lsda_relative : 1;
unsigned int need_relative : 1;
unsigned int need_lsda_relative : 1;
unsigned int per_encoding_relative : 1;
};

24
bfd/elf-eh-frame.c
View File

@ -775,7 +775,10 @@ _bfd_elf_eh_frame_section_offset (bfd *output_bfd ATTRIBUTE_UNUSED,
if (sec_info->entry[mid].make_relative
&& ! sec_info->entry[mid].cie
&& offset == sec_info->entry[mid].offset + 8)
return (bfd_vma) -2;
{
sec_info->entry[mid].need_relative = 1;
return (bfd_vma) -2;
}
/* If converting LSDA pointers to DW_EH_PE_pcrel, there will be no need
for run-time relocation against LSDA field. */
@ -783,7 +786,10 @@ _bfd_elf_eh_frame_section_offset (bfd *output_bfd ATTRIBUTE_UNUSED,
&& ! sec_info->entry[mid].cie
&& (offset == (sec_info->entry[mid].offset + 8
+ sec_info->entry[mid].lsda_offset)))
return (bfd_vma) -2;
{
sec_info->entry[mid].need_lsda_relative = 1;
return (bfd_vma) -2;
}
return (offset + sec_info->entry[mid].new_offset
- sec_info->entry[mid].offset);
@ -850,8 +856,8 @@ _bfd_elf_write_section_eh_frame (bfd *abfd,
{
/* CIE */
cie_offset = sec_info->entry[i].new_offset;
if (sec_info->entry[i].make_relative
|| sec_info->entry[i].make_lsda_relative
if (sec_info->entry[i].need_relative
|| sec_info->entry[i].need_lsda_relative
|| sec_info->entry[i].per_encoding_relative)
{
unsigned char *aug;
@ -860,8 +866,8 @@ _bfd_elf_write_section_eh_frame (bfd *abfd,
/* Need to find 'R' or 'L' augmentation's argument and modify
DW_EH_PE_* value. */
action = (sec_info->entry[i].make_relative ? 1 : 0)
| (sec_info->entry[i].make_lsda_relative ? 2 : 0)
action = (sec_info->entry[i].need_relative ? 1 : 0)
| (sec_info->entry[i].need_lsda_relative ? 2 : 0)
| (sec_info->entry[i].per_encoding_relative ? 4 : 0);
buf = contents + sec_info->entry[i].offset;
/* Skip length, id and version. */
@ -968,7 +974,7 @@ _bfd_elf_write_section_eh_frame (bfd *abfd,
+ sec_info->entry[i].offset + 8);
break;
}
if (sec_info->entry[i].make_relative)
if (sec_info->entry[i].need_relative)
value -= (sec->output_section->vma + sec->output_offset
+ sec_info->entry[i].new_offset + 8);
write_value (abfd, buf, value, width);
@ -983,7 +989,7 @@ _bfd_elf_write_section_eh_frame (bfd *abfd,
}
if ((sec_info->entry[i].lsda_encoding & 0xf0) == DW_EH_PE_pcrel
|| sec_info->entry[i].make_lsda_relative)
|| sec_info->entry[i].need_lsda_relative)
{
buf += sec_info->entry[i].lsda_offset;
width = get_DW_EH_PE_width (sec_info->entry[i].lsda_encoding,
@ -997,7 +1003,7 @@ _bfd_elf_write_section_eh_frame (bfd *abfd,
== DW_EH_PE_pcrel)
value += (sec_info->entry[i].offset
- sec_info->entry[i].new_offset);
else if (sec_info->entry[i].make_lsda_relative)
else if (sec_info->entry[i].need_lsda_relative)
value -= (sec->output_section->vma + sec->output_offset
+ sec_info->entry[i].new_offset + 8
+ sec_info->entry[i].lsda_offset);