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* elf.c (_bfd_elf_map_sections_to_segments): Don't put
	executable sections into the same segment with other
	read only sections if --sep-code.
	* elf32-bfin.c (elf32_bfin_code_in_l1): New variable.
	(elf32_bfin_data_in_l1): New variable.
	(elf32_bfin_final_write_processing): New.
	(elf32_bfin_special_sections[]): New.
	(elf_backend_final_write_processing): Define.
	(elf_backend_special_sections): Define.

	binutils/
	* readelf.c (get_machine_flags): Deal with Blackfin specific
	flags.

	include/
	* bfdlink.h (struct bfd_link_info): Add sep_code member
	variable.
	* elf/bfin.h (EF_BFIN_CODE_IN_L1): Define.
	(EF_BFIN_DATA_IN_L1): Define.

	ld/
	* Makefile.am (eelf32bfin.c): Depend on bfin.em.
	(eelf32bfinfd.c): Likewise.
	* Makefile.in: Regenerate.
	* gen-doc.texi: Set Blackfin.
	* ld.texinfo: Document --sep-code and Blackfin specific
	options.
	* ldmain.c (main): Initialize link_info.sep_code.
	* lexsup.c (enum option_values): Add OPTION_SEP_CODE.
	(ld_options[]): Add --sep-code.
	(parse_args): Deal with --sep-code.
	* emulparams/bfin.sh (EXTRA_EM_FILE): Define.
	* emulparams/elf32bfinfd.sh (OTHER_SECTIONS): Define.
	* emultempl/bfin.em: New file.
This commit is contained in:
Jie Zhang
2008-07-11 19:24:39 +00:00
parent a0d21d2808
commit 8c68457827
18 changed files with 239 additions and 4 deletions
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17
bfd/elf.c
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@@ -3605,6 +3605,7 @@ _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info)
asection **hdrpp;
bfd_boolean phdr_in_segment = TRUE;
bfd_boolean writable;
bfd_boolean executable;
int tls_count = 0;
asection *first_tls = NULL;
asection *dynsec, *eh_frame_hdr;
@@ -3676,6 +3677,7 @@ _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info)
phdr_index = 0;
maxpagesize = bed->maxpagesize;
writable = FALSE;
executable = FALSE;
dynsec = bfd_get_section_by_name (abfd, ".dynamic");
if (dynsec != NULL
&& (dynsec->flags & SEC_LOAD) == 0)
@@ -3757,6 +3759,14 @@ _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info)
ends precisely on a page boundary. */
new_segment = TRUE;
}
else if (info->sep_code
&& ((! executable && (hdr->flags & SEC_CODE) != 0)
|| (executable && (hdr->flags & SEC_CODE) == 0)))
{
/* We don't want to put a executable section in a non-executable
segment. */
new_segment = TRUE;
}
else
{
/* Otherwise, we can use the same segment. */
@@ -3771,6 +3781,8 @@ _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info)
{
if ((hdr->flags & SEC_READONLY) == 0)
writable = TRUE;
if ((hdr->flags & SEC_CODE) != 0)
executable = TRUE;
last_hdr = hdr;
/* .tbss sections effectively have zero size. */
if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD))
@@ -3796,6 +3808,11 @@ _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info)
else
writable = FALSE;
if ((hdr->flags & SEC_CODE) != 0)
executable = TRUE;
else
executable = FALSE;
last_hdr = hdr;
/* .tbss sections effectively have zero size. */
if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL)