Binutils with MCST patches
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Andreas Arnez 22347e554c Fix copy_bitwise()
When the user writes or reads a variable whose location is described
with DWARF pieces (DW_OP_piece or DW_OP_bit_piece), GDB's helper
function copy_bitwise is invoked for each piece.  The implementation of
this function has a bug that may result in a corrupted copy, depending
on alignment and bit size.  (Full-byte copies are not affected.)

This rewrites copy_bitwise, replacing its algorithm by a fixed version,
and adding an appropriate test case.  Without the fix the new test case
fails, e.g.:

  print def_t
  $2 = {a = 0, b = 4177919}
  (gdb) FAIL: gdb.dwarf2/nonvar-access.exp: print def_t

Written in binary, the wrong result above looks like this:

  01111111011111111111111

Which means that two zero bits have sneaked into the copy of the
original all-one bit pattern.  The test uses this simple all-one value
in order to avoid another GDB bug that causes the DWARF piece of a
DW_OP_stack_value to be taken from the wrong end on big-endian
architectures.

gdb/ChangeLog:

	* dwarf2loc.c (extract_bits_primitive): Remove.
	(extract_bits): Remove.
	(copy_bitwise): Rewrite.  Fixes a possible corruption that may
	occur for non-byte-aligned copies.

gdb/testsuite/ChangeLog:

	* gdb.dwarf2/nonvar-access.exp: Add a test for accessing
	non-byte-aligned bit fields.
2016-11-24 17:48:03 +01:00
bfd [ARM] Bind defined symbol locally in PIE 2016-11-24 14:01:53 +00:00
binutils Fix the linker so that it will not silently generate ELF binaries with invalid program headers. Fix readelf to report such invalid binaries. 2016-11-23 11:10:39 +00:00
config
cpu
elfcpp
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gas gas: run the hwcaps-bump tests with 64-bit sparc objects only. 2016-11-23 03:04:17 -08:00
gdb Fix copy_bitwise() 2016-11-24 17:48:03 +01:00
gold Print the default for all binary options; clean up --help output. 2016-11-22 15:46:34 -08:00
gprof Fix spelling mistakes in comments in configure scripts 2016-11-22 15:43:03 +00:00
include gas,opcodes: fix hardware capabilities bumping in the sparc assembler. 2016-11-22 04:40:37 -08:00
intl
ld [ARM] Bind defined symbol locally in PIE 2016-11-24 14:01:53 +00:00
libdecnumber
libiberty libiberty: Add Rust symbol demangling. 2016-11-18 11:06:18 +01:00
opcodes Fix spelling mistakes in comments in configure scripts 2016-11-22 15:43:03 +00:00
readline
sim sim: mips: add PR info to ChangeLog 2016-11-12 01:02:23 -05:00
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		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.