gdb and binutils branch master updated. 71e396f920e593494b8d57114d32e2c07f823781

[luisgpm at sourceware dot org]

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https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=71e396f920e593494b8d57114d32e2c07f823781

commit 71e396f920e593494b8d57114d32e2c07f823781
Author: Luis Machado <lgustavo@codesourcery.com>
Date:   Mon Oct 27 08:57:58 2014 -0200

    Fix ARM machine state testcase failures
    
    When running GDB's reverse debugging testsuite against a few ARM
    multilibs, i noticed failures in the machinestate* testcases.
    
    Further investigation showed that push and pop instruction encodings
    A1 and A2 were not being handled properly, thus we missed saving
    important contents from registers and memory. When going backwards,
    such contents were not restored and thus we ended up with a corrupted
    state that did not correspond to the real values we had at a
    particular point in time.
    
    Attached is a patch that fixes around 36 failures for both
    gdb.reverse/machinestate.exp and
    gdb.reverse/machinestate-precsave.exp testcases, making them fully
    pass. This is for both armv7 and armv4. I still see failures for
    armv4 thumb though, so it needs a bit more investigation.
    
    I see no regressions due to this patch for armv7, armv7 thumb, armv4
    and armv4 thumb.
    
    gdb/ChangeLog:
    
    	* arm-tdep.c (INSN_S_L_BIT_NUM): Document.
    	(arm_record_ld_st_imm_offset): Reimplement to cover all
    	load/store cases for ARM opcode 010.
    	(arm_record_ld_st_multiple): Reimplement to cover all
    	load/store cases for ARM opcode 100.

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

Summary of changes:
 gdb/ChangeLog  |    8 ++
 gdb/arm-tdep.c |  323 +++++++++++++++++++++++--------------------------------
 2 files changed, 143 insertions(+), 188 deletions(-)


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