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Yao Qi 607685ecee Native debug arm program by aarch64 GDB
This patch is to let aarch64 GDB debug 32-bit arm program natively.  In
each function for fetching and storing registers, GDB will check
gdbarch_bfd_arch_info (gdbarch)->bits_per_word, if it is 32, call
the corresponding aarch32 functions in aarch32-linux-nat.c, otherwise
fall back to aarch64 code to fetch and store registers.

aarch64_linux_read_description has to return the right target description,
but we don't have gdbarch available there, so GDB fetches auxv and gets
AT_PHENT, in order to determine whether the target is 32-bit or 64-bit.
I learned this trick from solib-svr4.c.

gdb:

2015-07-07  Yao Qi  <yao.qi@linaro.org>

	* aarch32-linux-nat.h (VFP_REGS_SIZE): New macro, moved from
	arm-linux-nat.c.
	* aarch64-linux-nat.c: Include aarch32-linux-nat.h and
	elf/external.h.
	(fetch_gregs_from_thread): Call aarch32_gp_regcache_supply
	if target is 32-bit.
	(store_gregs_to_thread): Call aarch32_gp_regcache_collect
	if target is 32-bit.
	(fetch_fpregs_from_thread): Call aarch32_vfp_regcache_supply
	if target is 32-bit.
	(store_fpregs_to_thread): Call aarch32_vfp_regcache_collect
	if target is 32-bit.
	(tdesc_arm_with_vfpv3, tdesc_arm_with_neon): Declare.
	(aarch64_linux_read_description): Return the right target
	description.
	* arm-linux-nat.c (VFP_REGS_SIZE): Moved to aarch32-linux-nat.h.
	* config/aarch64/linux.mh (NATDEPFILES): Add aarch32-linux-nat.o.
	* configure.tgt (aarch64*-*-linux*): Add arm-tdep.o and
	arm-linux-tdep.o
2015-07-07 16:58:19 +01:00
bfd Automatic date update in version.in 2015-07-07 00:00:08 +00:00
binutils
config Sync dfp.m4 with gcc 2015-06-30 10:20:19 -07:00
cpu
elfcpp
etc
gas Remove ppc860, ppc750cl, ppc7450 insns from common ppc. 2015-07-03 10:57:14 +09:30
gdb Native debug arm program by aarch64 GDB 2015-07-07 16:58:19 +01:00
gold Align text section ends so that stub tables appears at expected addresses. 2015-07-06 15:02:40 -07:00
gprof
include Remove ppc860, ppc750cl, ppc7450 insns from common ppc. 2015-07-03 10:57:14 +09:30
intl
ld Fix an opd->append index in elf64-ppc.c 2015-07-05 19:57:07 +01:00
libdecnumber Sync libdecnumber with gcc 2015-06-30 10:22:36 -07:00
libiberty
opcodes Remove ppc860, ppc750cl, ppc7450 insns from common ppc. 2015-07-03 10:57:14 +09:30
readline
sim Fix snafu with latest addition to the ARM sim. 2015-07-02 16:19:09 +01:00
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configure Sync toplevel configure with gcc 2015-06-30 10:15:57 -07:00
configure.ac Sync toplevel configure with gcc 2015-06-30 10:15:57 -07:00
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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.