gdb and binutils branch master updated. bd286a290bbfe7039cf9fe0291ab9b1f20937e52

[kcy at sourceware dot org]

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https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=bd286a290bbfe7039cf9fe0291ab9b1f20937e52

commit bd286a290bbfe7039cf9fe0291ab9b1f20937e52
Author: Kwok Cheung Yeung <kcy@codesourcery.com>
Date:   Sat Oct 18 21:45:36 2014 +0100

    Fix the gdb.dwarf2/dw2-dir-file-name.exp test on MIPS
    
    This patch fixes the failures that occur with the
    gdb.dwarf2/dw2-dir-file-name.exp test on 64-bit MIPS and compressed
    MIPS ISAs (i.e. MIPS16 and microMIPS).
    
    The failures on 64-bit occur because the generated DWARF address
    information is always 32-bit, which causes the upper 32-bits of
    addresses to be truncated and causes breakpoints to be set on the
    wrong address if any of the upper 32-bits are non-zero.  I suspect
    that other 64-bit architectures get away with it because they
    place all their instructions at a VMA lower than 2^32 by default.
    This patch causes 64-bit addresses to be generated if a 64-bit
    target is detected.
    
    The failures on MIPS16 and microMIPS occur because the breakpoint
    address needs to have the LSB set to 1 (used to indicate that the
    code is compressed). However, the function name is interpreted as
    a data label, causing GDB to set breakpoints at even addresses.
    This is fixed by explicitly adding a '.insn' directive (see
    https://sourceware.org/binutils/docs/as/MIPS-insn.html) after the
    label on MIPS only.
    
    gdb/testsuite/
    
    2014-10-18  Kwok Cheung Yeung  <kcy@codesourcery.com>
    
    	* gdb.dwarf2/dw2-dir-file-name.exp (addr_len): New.
    	(out_cu): Use addr_len for the size of addresses.
    	(out_line): Likewise.  Size DW_LNE_set_address instruction
    	according to addr_len.
    	* gdb.dwarf2/dw2-dir-file-name.c (START_INSNS): New.
    	(FUNC): Add START_INSNS to definition.

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

Summary of changes:
 gdb/testsuite/ChangeLog                        |    9 ++++++++
 gdb/testsuite/gdb.dwarf2/dw2-dir-file-name.c   |    7 ++++++
 gdb/testsuite/gdb.dwarf2/dw2-dir-file-name.exp |   27 ++++++++++++++++--------
 3 files changed, 34 insertions(+), 9 deletions(-)


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