gdb and binutils branch master updated. 2edab91c10dcae30a93ce7d9f8088b8b33ee55eb

[amodra at sourceware dot org]

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https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=2edab91c10dcae30a93ce7d9f8088b8b33ee55eb

commit 2edab91c10dcae30a93ce7d9f8088b8b33ee55eb
Author: Alan Modra <amodra@gmail.com>
Date:   Wed Jan 22 11:43:03 2014 +1030

    Make assignments to dot keep an empty output section.
    
    An assignment to dot in an output section that allocates space of
    course keeps the output section.  Here, I'm changing the behaviour for
    assignments that don't allocate space.  The idea is not so much to
    allow people to force output of an empty section with ". = .", but
    to fix cases where an otherwise empty section has padding added by an
    alignment expression that changes with relaxation or .eh_frame
    editing.  Such a section might have zero size before relaxation and so
    be stripped incorrectly.
    
    ld/
    	* ld.texinfo (Output Section Discarding): Mention assigning to dot
    	as a way of keeping otherwise empty sections.
    	* ldexp.c (is_dot, is_value, is_sym_value, is_dot_ne_0,
    	is_dot_plus_0, is_align_conditional): New predicates.
    	(exp_fold_tree_1): Set SEC_KEEP when assigning to dot inside an
    	output section, except for some special cases.
    	* scripttempl/elfmicroblaze.sc: Use canonical form to align at
    	end of .heap and .stack.
    ld/testsuite/
    	* ld-shared/elf-offset.ld: Align end of .bss with canonical form
    	of ALIGN that allows an empty .bss to be removed.
    	* ld-arm/arm-dyn.ld: Likewise.
    	* ld-arm/arm-lib.ld: Likewise.
    	* ld-elfvsb/elf-offset.ld: Likewise.
    	* ld-mips-elf/mips-dyn.ld: Likewise.
    	* ld-mips-elf/mips-lib.ld: Likewise.
    	* ld-arm/arm-no-rel-plt.ld: Remove duplicate ALIGN.
    	* ld-powerpc/vle-multiseg-1.ld: Remove ALIGN at start of section.
    	ALIGN address of section instead.
    	* ld-powerpc/vle-multiseg-2.ld: Likewise.
    	* ld-powerpc/vle-multiseg-3.ld: Likewise.
    	* ld-powerpc/vle-multiseg-4.ld: Likewise.
    	* ld-powerpc/vle-multiseg-6.ld: Likewise.
    	* ld-scripts/empty-aligned.d: Check section headers not program
    	headers.  Remove xfail and notarget.
    	* ld-scripts/empty-aligned.t: Use canonical ALIGN for end of .text2.

-----------------------------------------------------------------------

Summary of changes:
 ld/ChangeLog                              |   11 +++
 ld/ld.texinfo                             |   13 +++-
 ld/ldexp.c                                |   97 +++++++++++++++++++++++++++++
 ld/scripttempl/elfmicroblaze.sc           |    4 +-
 ld/testsuite/ChangeLog                    |   20 ++++++
 ld/testsuite/ld-arm/arm-dyn.ld            |    2 +-
 ld/testsuite/ld-arm/arm-lib.ld            |    2 +-
 ld/testsuite/ld-arm/arm-no-rel-plt.ld     |    1 -
 ld/testsuite/ld-elfvsb/elf-offset.ld      |    2 +-
 ld/testsuite/ld-mips-elf/mips-dyn.ld      |    2 +-
 ld/testsuite/ld-mips-elf/mips-lib.ld      |    2 +-
 ld/testsuite/ld-powerpc/vle-multiseg-1.ld |    3 +-
 ld/testsuite/ld-powerpc/vle-multiseg-2.ld |    3 +-
 ld/testsuite/ld-powerpc/vle-multiseg-3.ld |    3 +-
 ld/testsuite/ld-powerpc/vle-multiseg-4.ld |    3 +-
 ld/testsuite/ld-powerpc/vle-multiseg-6.ld |    3 -
 ld/testsuite/ld-scripts/empty-aligned.d   |   14 +---
 ld/testsuite/ld-scripts/empty-aligned.t   |    8 +-
 ld/testsuite/ld-shared/elf-offset.ld      |    2 +-
 19 files changed, 157 insertions(+), 38 deletions(-)


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