gdb and binutils branch master updated. ac740bc7a9103a561329ebf7aa05ff31bcab2267

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https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=ac740bc7a9103a561329ebf7aa05ff31bcab2267

commit ac740bc7a9103a561329ebf7aa05ff31bcab2267
Author: James Hogan <james.hogan@imgtec.com>
Date:   Mon Sep 1 22:48:40 2014 +0100

    Reset errno before PTRACE_PEEKUSER for MIPS DSP_CONTROL
    
    PTRACE_PEEKUSER can return -1, which is usually used to determine whether
    a system call has reported an error, so errno must be used alone to
    determine whether an error occurred. However errno isn't modified by a
    successful system call so it must be reset to a known value (0) before the
    syscall call.
    
    Add the missing errno reset when reading the DSP_CONTROL register in the
    native MIPS Linux backend and the MIPS gdbserver backend.
    
    gdb/:
    	* mips-linux-nat.c (mips_linux_read_description): Reset errno to 0
    	prior to reading DSP_CONTROL with PTRACE_PEEKUSER ptrace call.
    
    gdb/gdbserver/:
    	* linux-mips-low.c (mips_read_description): Reset errno to 0 prior
    	to reading DSP_CONTROL with PTRACE_PEEKUSER ptrace call.

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

Summary of changes:
 gdb/ChangeLog                  |    5 +++++
 gdb/gdbserver/ChangeLog        |    5 +++++
 gdb/gdbserver/linux-mips-low.c |    1 +
 gdb/mips-linux-nat.c           |    1 +
 4 files changed, 12 insertions(+), 0 deletions(-)


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