gdb and binutils branch hjl/pr14675 created. cade3c669933278d78d5a8900458324aadd68b14

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https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=cade3c669933278d78d5a8900458324aadd68b14

commit cade3c669933278d78d5a8900458324aadd68b14
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Sat Dec 20 05:45:51 2014 -0800

    Treat .eh_frame section before crtbeginT as normal input
    
    Force the exception frame section from input files before the crtbeginT
    file to be handled as an ordinary input section if we aren't creating
    the exception frame header.  If we don't do this, we won't correctly
    handle the special marker symbol in the exception frame section in the
    crtbeginT file.
    
    	PR gold/14675
    	* ehframe.cc (Eh_frame::add_ehframe_input_section): Force the
    	exception frame section from input files if it can't be
    	optimized.
    	(Eh_frame::add_ehframe_input_section<32, false>): Updated.
    	(Eh_frame::add_ehframe_input_section<32, true>): Likewise.
    	(Eh_frame::add_ehframe_input_section<64, false>): Likewise.
    	(Eh_frame::add_ehframe_input_section<64, true>): Likewise.
    	* ehframe.h (Eh_frame::add_ehframe_input_section): Add a
    	bool parameter to indicate if the exception frame section
    	can be optimized.
    	* layout.cc (Layout::Layout): Initialize optimize_ehframe_ to
    	!has_crtbeginT.
    	(Layout::layout_eh_frame): Pass this->optimize_ehframe_ to
    	Eh_frame::add_ehframe_input_section.
    	(Layout::make_eh_frame_section): Set this->optimize_ehframe_
    	to true when processing the crtbeginT file if it is on command
    	line.
    	(Layout::match_file_name (const char*, const char*)): New.
    	(Layout::match_file_name(const Relobj*, const char*): Use it.
    	* layout.h (Layout::Layout): Add has_crtbeginT.
    	(Layout::match_file_name (const char*, const char*)): New.
    	(Layout): Add an optimize_ehframe_ member.
    	* main.cc (main): Update layout.
    	* options.cc: Include "layout.h".
    	(Input_arguments::add_file): Set this->has_crtbeginT_ to true
    	if there is a crtbeginT file.
    	* options.h (Input_arguments::Input_arguments): Initialize
    	has_crtbeginT_ to false.
    	(Input_arguments::has_crtbeginT): New function.
    	(Input_arguments::has_crtbeginT_): New bool member.
    	(Command_line::crtbeginT): New function.

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