gdb and binutils branch hjl/pr17729 created. 24103bbaf7b52a22ae7fa04ec17aadc5d7445dac

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commit 24103bbaf7b52a22ae7fa04ec17aadc5d7445dac
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Thu Dec 18 11:09:28 2014 -0800

    Handle stack split for x32
    
    X32 uses cmp %fs:NN,%esp, lea NN(%rsp),%r10d, lea NN(%rsp),%r11d,
    instead of cmp %fs:NN,%rsp, lea NN(%rsp),%r10, lea NN(%rsp),%r11.
    This patch handles it.
    
    	PR gold/17729
    	* configure.ac (DEFAULT_TARGET_X86_64): Don't set for x32.
    	(DEFAULT_TARGET_X32): Set for x32.
    	* x86_64.cc (Target_x86_64<size>::do_calls_non_split): Handle
    	x32.
    	* testsuite/Makefile.am (check_SCRIPTS): Add split_x32.sh.
    	(check_DATA): Add split_x32 files.
    	(split_x32_[1234n].o): New targets.
    	(split_x32_[124]): New targets.
    	(split_x32_[1234r].stdout): New targets.
    	* testsuite/split_x32.sh: New file.
    	* testsuite/split_x32_1.s: Likewise.
    	* testsuite/split_x32_2.s: Likewise.
    	* testsuite/split_x32_3.s: Likewise.
    	* testsuite/split_x32_4.s: Likewise.
    	* testsuite/split_x32_n.s: Likewise.
    	* configure: Regenerated.
    	* testsuite/Makefile.in: Likewise.

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