[PATCH] Patch 2 of 2 for aarch64 ILP32 support in gdb

[Steve Ellcey]

This is the second of two patches to get aarch64 ILP32 support into
gdb. Â The first patch was a couple of bfd files, this patch is the gdb
and gdbserver changes.  This is an update of the patches that Andrew
Pinski submitted here:

	https://sourceware.org/ml/binutils/2016-09/msg00004.html

This patch includes everything from his patch 2 and 3.  I updated the
patches to top-of-tree, addressed the comments that were made at the
time, and retested with the binutils and gdb testsuites.

Steve Ellcey
sellcey@cavium.com


gdb ChangeLog:

2017-01-24  Andrew Pinski  <apinski@cavium.com>
	    Steve Ellcey  <sellcey@cavium.com>

	* aarch64-tdep.h (gdbarch_tdep) <ilp32>: New field.
	* aarch64-tdep.c: Include "features/aarch64_ilp32.c".
	(aarch64_gdbarch_init): Setup ILP32 support.
	Make sure the gdbarches have compatible ilp32 flags.
	Set long and ptr sizes correctly for ilp32.
	(_initialize_aarch64_tdep): Call initialize_tdesc_aarch64_ilp32.
	* aarch64-linux-tdep.c (aarch64_linux_init_abi):
	Add support for ILP32.
	* features/Makefile (WHICH): Add aarch64_ilp32.
	(aarch64_ilp32-expedite): Set.
	(XMLTOC): Add aarch64_ilp32.xml.
	* features/aarch64_ilp32-core.xml: New file.
	* features/aarch64_ilp32.xml: New file.
	* features/aarch64_ilp32.c: Generate.
	* regformats/aarch64_ilp32.dat: Generate.

gdb/gdbserver ChangeLog:

2017-01-24  Andrew Pinski  <apinski@cavium.com>
	    Steve Ellcey  <sellcey@cavium.com>

	* Makefile.in (clean): Remove aarch64_ilp32.c also.
	(aarch64_ilp32-ipa.o): New target.
	(aarch64_ilp32.c): New target.
	* configure.srv (aarch64*-*-linux*): Add ilp32 files
	to srv_regobj, srv_xmlfiles and ipa_obj.
	* linux-aarch64-ipa.c (init_registers_aarch64_ilp32):
	Declare.
	(tdesc_aarch64_ilp32): Likewise.
	(get_ipa_tdesc): Return tdesc_aarch64_ilp32 for ILP32.
	(initialize_low_tracepoint): Call init_registers_aarch64_ilp32
	for ILP32.
	* linux-aarch64-low.c (init_registers_aarch64_ilp32): Declare.
	(tdesc_aarch64_ilp32): Likewise.
	(aarch64_linux_read_description): Return tdesc_aarch64_ilp32
	for ILP32 executables.
	(initialize_low_arch): Call init_registers_aarch64_ilp32.
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