include/ChangeLog

2011-07-11  Catherine Moore  <clm@codesourcery.com>

	* bfdlink.h (flag_type): New enumeration.
	(flag_info_list): New structure.
	(flag_info): New structure.

bfd/ChangeLog
2011-07-11  Catherine Moore  <clm@codesourcery.com>

	* aout-adobe.c (aout_32_bfd_lookup_section_flags): New definition.
	* aout-target.h (MY_bfd_lookup_section_flags): New definition.
	* aout-tic30.c (MY_bfd_lookup_section_flags): New definition.
        * bfd-in2.h: Regenerated.
	* bfd.c (bfd_lookup_section_flags): New definition.
	* binary.c (binary_bfd_lookup_section_flags): New definition.
	* bout.c (b_out_bfd_lookup_section_flags): New definition.
	* coff-alpha.c (_bfd_ecoff_bfd_lookup_section_flags): New definition.
	* coff-mips.c (_bfd_ecoff_bfd_lookup_section_flags): New definition.
	* coff-rs6000.c (rs6000coff_vec): Include
	bfd_generic_lookup_section_flags.
	(pmac_xcoff_vec): Likewise.
	* coffcode.h (coff_bfd_lookup_section_flags): New definition.
	* coff64-rs6000.c (rs6000coff64_vec): Include
	bfd_generic_lookup_section_flags.
	(aix5coff64_vec): Likewise.
	* ecoff.c (bfd_debug_section): Initialize flag_info field.
	* elf-bfd.h (elf_backend_lookup_section_flags_hook): Declare.
	(bfd_elf_lookup_section_flags): Declare.
	* elflink.c (bfd_elf_lookup_section_flags): New function.
	* elfxx-target.h (bfd_elfNN_bfd_lookup_section_flags): Define.
	(elf_backend_lookup_section_flags_hook): Define.
	(elf_backend_data): Add elf_backend_lookup_section_flags_hook.
	* i386msdos.c (msdos_bfd_lookup_section_flags): New define.
	* i386os9k.c (os9k_bfd_lookup_section_flags): New define.
	* ieee.c (ieee_bfd_lookup_section_flags): New define.
	* ihex.c (ihex_bfd_lookup_section_flags): New define.
	* libbfd-in.h (_bfd_nolink_bfd_lookup_section_flags): Declare.
	(bfd_generic_lookup_section_flags): Declare.
	* libbfd.h: Regenerated.
	* mach-o-target.c (bfd_mach_o_bfd_lookup_section_flags): New.
	* mmo.c (mmo_bfd_lookup_section_flags): New definition.
	* nlm-target.h (nlm_bfd_lookup_section_flags): New definition.
	* oasys.c (oasys_bfd_lookup_section_flags): New definition.
	* pef.c (bfd_pef_bfd_lookup_section_flags): New definition.
	* plugin.c (bfd_plugin_bfd_lookup_section_flags): New definition.
	* ppcboot.c (ppcboot_bfd_lookup_section_flags): New definition.
	* reloc.c (bfd_generic_lookup_section_flags): New function.
	* som.c (som_bfd_lookup_section_flags): New definition.
	* srec.c (srec_bfd_lookup_section_flags): New definition.
	* targets.c (flag_info): Declare.
	(NAME##_bfd_lookup_section_flags): Add to LINK jump table.
	(_bfd_lookup_section_flags): New.
	* tekhex.c (tekhex_bfd_lookup_section_flags): New definition.
	* versados.c (versados_bfd_lookup_section_flags): New definition.
	* vms-alpha.c (alpha_vms_bfd_lookup_section_flag): New definition.
	* xsym.c (bfd_sym_bfd_lookup_section_flags): New definition.

ld/ChangeLog
2011-07-11  Catherine Moore  <clm@codesourcery.com>

	* ld.h (section_flag_list): Add field to struct wildcard_spec.
	* ld.texinfo (INPUT_SECTION_FLAGS): Document.
	* ldgram.y (flag_info_list, flag_info): Add to union.
	(INPUT_SECTION_FLAGS): New token.
	(wildcard_spec): Initialize section_flag_list to NULL for
	each alternative.
	(sect_flag_list, sect_flags): New rules.
	(input_section_spec_no_keep): Add alternatives to recognize
	sect_flags.
	* ldlang.c (walk_wild_consider_section): Initialize
	section_flag_info field of the section struct.
	(lang_add_section): Check input section flags.
	(lang_add_wild): Initialize section_flag_list field of
	the statement struct.
	* ldlang.h (lang_input_statement_struct): Add section_flag_list field.
	(lang_wild_statement_struct): Likewise.
	* ldlex.l (INPUT_SECTION_FLAGS): New token.
	* mri.c (mri_draw_tree): Initialize section_flag_list to NULL.
	* NEWS: Announce INPUT_SECTION_FLAGS enhancement.

ld/testsuite/ChangeLog
2011-07-11 Catherine Moore  <clm@cm00re.com>

	* ld-scripts/section-flags-1.s: New.
	* ld-scripts/section-flags-1.t: New.
	* ld-scripts/section-flags-2.s: New.
	* ld-scripts/section-flags-2.t: New.
	* ld-scripts/section-flags.exp: New.

1 files changed, 20 insertions, 0 deletions

diff --git a/ld/ld.texinfo b/ld/ld.texinfo
index 5a8e190..4fb649a 100644
--- a/ld/ld.texinfo
+++ b/ld/ld.texinfo
@@ -3859,6 +3859,26 @@ needs to be at a particular location in memory.  For example:
 data.o(.data)
 @end smallexample
 
+To refine the sections that are included based on the section flags
+of an input section, INPUT_SECTION_FLAGS may be used.
+
+Here is a simple example for using Section header flags for ELF sections:
+
+@smallexample
+@group
+SECTIONS @{
+  .text : @{ INPUT_SECTION_FLAGS (SHF_MERGE & SHF_STRINGS) *(.text) @}
+  .text2 :  @{ INPUT_SECTION_FLAGS (!SHF_WRITE) *(.text) @}
+@}
+@end group
+@end smallexample
+
+In this example, the output section @samp{.text} will be comprised of any
+input section matching the name *(.text) whose section header flags
+@code{SHF_MERGE} and @code{SHF_STRINGS} are set.  The output section
+@samp{.text2} will be comprised of any input section matching the name *(.text)
+whose section header flag @code{SHF_WRITE} is clear.
+
 You can also specify files within archives by writing a pattern
 matching the archive, a colon, then the pattern matching the file,
 with no whitespace around the colon.