gdb and binutils branch master updated. bdf22206150b19e4903e9cbc520de2c49b2a2b7f

[aburgess at sourceware dot org]

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https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=bdf22206150b19e4903e9cbc520de2c49b2a2b7f

commit bdf22206150b19e4903e9cbc520de2c49b2a2b7f
Author: Andrew Burgess <aburgess@broadcom.com>
Date:   Tue Dec 17 17:18:44 2013 +0000

    Convert the unavailable vector to be bit, not byte, based.
    
      https://sourceware.org/ml/gdb-patches/2013-12/msg00144.html
    
    The vector of unavailable parts of a value is currently byte based.  Given
    that we can model a value down to the bit level, we can potentially loose
    information with the current implementation.  After this patch we model the
    unavailable information in bits.
    
    gdb/ChangeLog
    
    	* dwarf2loc.c (read_pieced_value): Mark bits, not bytes
    	unavailable, use correct bit length.
    	* value.c (struct value): Extend comment on unavailable to
    	indicate that it is bit based.
    	(value_bits_available): New function.
    	(value_bytes_available): Call value_bits_available.
    	(value_entirely_available): Check against the bit length, not byte
    	length.
    	(mark_value_bits_unavailable): New function.
    	(mark_value_bytes_unavailable): Move contents to
    	mark_value_bits_unavailable, call to same.
    	(memcmp_with_bit_offsets): New function.
    	(value_available_contents_bits_eq): New function, takes the
    	functionality from value_available_contents_eq but uses
    	memcmp_with_bit_offsets now, and is bit not byte based.
    	(value_available_contents_eq): Move implementation into
    	value_available_contents_bits_eq, call to same.
    	(value_contents_copy_raw): Work on bits, not bytes.
    	(unpack_value_bits_as_long_1): Check availability in bits, not
    	bytes.
    	* value.h (value_bits_available): Declare new function.
    	(mark_value_bits_unavailable): Declare new function.
    
    gdb/testsuite/ChangeLog
    
    	* gdb.trace/unavailable-dwarf-piece.c: New file.
    	* gdb.trace/unavailable-dwarf-piece.exp: New file.

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

Summary of changes:
 gdb/ChangeLog                                      |   25 ++
 gdb/dwarf2loc.c                                    |    2 +-
 gdb/testsuite/ChangeLog                            |    5 +
 gdb/testsuite/gdb.trace/unavailable-dwarf-piece.c  |   86 +++++
 .../gdb.trace/unavailable-dwarf-piece.exp          |  334 ++++++++++++++++++++
 gdb/value.c                                        |  181 ++++++++++--
 gdb/value.h                                        |   14 +
 7 files changed, 625 insertions(+), 22 deletions(-)
 create mode 100644 gdb/testsuite/gdb.trace/unavailable-dwarf-piece.c
 create mode 100644 gdb/testsuite/gdb.trace/unavailable-dwarf-piece.exp


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