From: Jakub Jelinek <jakub@redhat.com>
Date: Thu, 13 Dec 2001 11:09:33 +0000 (+0000)
Subject: 	* elf-bfd.h (enum elf_link_info_type): New.
X-Git-Tag: cygnus_cvs_20020108_pre~77
X-Git-Url: https://sourceware.org/git/?a=commitdiff_plain;h=d7b37ebf0a890aff1d5b2c5448711a898fc84930;p=newlib-cygwin.git

	* elf-bfd.h (enum elf_link_info_type): New.
	(struct bfd_elf_section_data): Remove stab_info and merge_info
	fields, add sec_info and sec_info_type.
	(struct elf_obj_tdata): Add eh_frame_hdr field.
	(_bfd_elf_discard_section_eh_frame): New prototype.
	(_bfd_elf_discard_section_eh_frame_hdr): Likewise.
	(_bfd_elf_eh_frame_section_offset): Likewise.
	(_bfd_elf_write_section_eh_frame): Likewise.
	(_bfd_elf_write_section_eh_frame_hdr): Likewise.
	* Makefile.am (BFD32_BACKENDS): Add elf-eh-frame.lo.
	(BFD32_BACKENDS_CFILES): Add elf-eh-frame.c.
	(elf-eh-frame.lo): New.
	* Makefile.in: Rebuilt.
	* configure.in (elf): Add elf-eh-frame.lo.
	* configure: Rebuilt.
	* elf.c (_bfd_elf_print_private_bfd_data): Support PT_GNU_EH_FRAME.
	(map_sections_to_segments): Create PT_GNU_EH_FRAME if requested.
	(get_program_header_size): Take into account PT_GNU_EH_FRAME
	segment.
	(_bfd_elf_rela_local_sym): Use sec_info_type and sec_info.
	(_bfd_elf_rel_local_sym): Likewise.
	(_bfd_elf_section_offset): Likewise.  Call
	_bfd_elf_eh_frame_section_offset too.
	* elfxx-ia64.c (elfNN_ia64_relocate_section): Use sec_info_type and
	sec_info.
	* elf64-alpha.c (elf64_alpha_relocate_section): Likewise.
	* elf-eh-frame.c: New file.
	* elflink.h (elf_link_add_object_symbols): Don't optimize SHF_MERGE
	.stab sections.  Set sec_info_type, use sec_info instead
	of merge_info and stab_info.
	(elf_link_create_dynamic_sections): Create .eh_frame_hdr section
	if --eh-frame-hdr.
	(elf_bfd_final_link): Write .eh_frame_hdr section.
	(elf_link_sec_merge_syms): Use sec_info_type and sec_info.
	(elf_link_input_bfd): Likewise.
	Call _bfd_elf_write_section_eh_frame to write .eh_frame sections.
	(elf_bfd_discard_info): Add output_bfd argument.
	Call _bfd_elf_discard_section_eh_frame and
	_bfd_elf_discard_section_eh_frame_hdr.
	(elf_section_ignore_discarded_relocs): Use sec_info_type, not section
	names.
	* bfd-in.h (bfd_elf32_discard_info, bfd_elf64_discard_info): Adjust
	prototypes.
	* bfd-in2.h (bfd_elf32_discard_info, bfd_elf64_discard_info): Likewise.

	* elf/common.h (PT_GNU_EH_FRAME): Define.
	* bfdlink.h (struct bfd_link_info): Add eh_frame_hdr field.

	* emultempl/elf32.em (finish): Supply output_bfd
	to bfd_elf*_discard_info.
	(OPTION_EH_FRAME_HDR): Define.
	(longopts): Add --eh-frame-hdr.
	(parse_args): Handle it.
	(list_options): Add --eh-frame-hdr to help.
	* emultempl/hppaelf.em (finish): Supply output_bfd
	to bfd_elf*_discard_info.
	* scripttempl/elf.sc (.eh_frame_hdr): Add.

	* readelf.c (get_segment_type): Support PT_GNU_EH_FRAME.
---

diff --git a/include/ChangeLog b/include/ChangeLog
index 5a13fee45..2313517e4 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,8 @@
+2001-12-13  Jakub Jelinek  <jakub@redhat.com>
+
+	* elf/common.h (PT_GNU_EH_FRAME): Define.
+	* bfdlink.h (struct bfd_link_info): Add eh_frame_hdr field.
+
 2001-12-07  Geoffrey Keating  <geoffk@redhat.com>
 
 	* dis-asm.h (print_insn_xstormy16): Declare.
diff --git a/include/bfdlink.h b/include/bfdlink.h
index 086559438..c02a1e820 100644
--- a/include/bfdlink.h
+++ b/include/bfdlink.h
@@ -298,6 +298,10 @@ struct bfd_link_info
      Setting this true may result in a non-sharable text segment.  */
   boolean nocopyreloc;
 
+  /* True if .eh_frame_hdr section and PT_GNU_EH_FRAME ELF segment
+     should be created.  */
+  boolean eh_frame_hdr;
+
   /* How many spare .dynamic DT_NULL entries should be added?  */
   unsigned int spare_dynamic_tags;
 };
diff --git a/include/elf/common.h b/include/elf/common.h
index 1c25f9ff3..36a0b4dd8 100644
--- a/include/elf/common.h
+++ b/include/elf/common.h
@@ -256,6 +256,8 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 #define PT_LOPROC	0x70000000	/* Processor-specific */
 #define PT_HIPROC	0x7FFFFFFF	/* Processor-specific */
 
+#define PT_GNU_EH_FRAME	(PT_LOOS + 0x474e550)
+
 /* Program segment permissions, in program header p_flags field.  */
 
 #define PF_X		(1 << 0)	/* Segment is executable */