gdb and binutils branch master updated. 93a360cc5d11a18572239b30d5bae63703012086

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https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=93a360cc5d11a18572239b30d5bae63703012086

commit 93a360cc5d11a18572239b30d5bae63703012086
Author: Omair Javaid <omair.javaid@linaro.org>
Date:   Thu Jan 16 11:00:00 2014 +0000

    Fix testsuite/gdb.dwarf2/dw2-dos-drive.exp on ARM.
    
    This test currently fails on ARM:
    
      (gdb) PASS: gdb.dwarf2/dw2-dos-drive.exp: set breakpoint pending off
      break 'z:file.c':func
      Cannot access memory at address 0x0
    
    The error is GDB trying to read the prologue at the breakpoint's
    address, and failing:
    
      38 throw_error() exceptions.c:444 0x0016728c
      37 memory_error() corefile.c:204 0x001d1fcc
      36 read_memory() corefile.c:223 0x001d201a
      35 read_memory_unsigned_integer() corefile.c:312 0x001d2166
      34 arm_skip_prologue() arm-tdep.c:1452 0x00054270
    
      static CORE_ADDR
      arm_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
      {
      ...
        for (skip_pc = pc; skip_pc < limit_pc; skip_pc += 4)
          {
            inst = read_memory_unsigned_integer (skip_pc, 4, byte_order_for_code);
    
    
    The test doesn't execute the compiled object's code, so GDB will try
    to read memory from the binary's sections.  Instructions on ARM are
    4-byte wide, and thus ARM's prologue scanner reads in 4-byte chunks.
    As the section 'func' is put at is only 1 byte long, and no other
    section is allocated contiguously:
    
      ...
      Sections:
      Idx Name          Size      VMA       LMA       File off  Algn
        0 .text         00000001  00000000  00000000  00000034  2**0
                        CONTENTS, ALLOC, LOAD, READONLY, CODE
      ...
    
    ... the exec target fails the read the 4 bytes.
    
    Fix this by increasing the function's size.
    
    gdb/testsuite/ChangeLog:
    2014-01-16  Omair Javaid  <Omair.Javaid@linaro.org>
    
    	* gdb.dwarf2/dw2-dos-drive.S: Increase text section size to 4
    	bytes.

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

Summary of changes:
 gdb/testsuite/ChangeLog                  |    5 +++++
 gdb/testsuite/gdb.dwarf2/dw2-dos-drive.S |    3 ++-
 2 files changed, 7 insertions(+), 1 deletions(-)


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