* Build libitm on AArch64, patch taken from the trunk.

git-svn-id: svn://svn.debian.org/svn/gcccvs/branches/sid/gcc-4.9@7392 6ca36cf4-e1d1-0310-8c6f-e303bb2178ca

4 files changed, 159 insertions, 2 deletions

diff --git a/debian/changelog b/debian/changelog
index b925d05..069b426 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,6 +1,7 @@
 gcc-4.9 (4.9.0-5) UNRELEASED; urgency=medium
 
   * Limit systemtap-sdt-dev build dependency to linux systems.
+  * Build libitm on AArch64, patch taken from the trunk.
 
  -- Matthias Klose <doko@debian.org>  Mon, 19 May 2014 14:40:47 +0200
 
diff --git a/debian/libitm1.symbols b/debian/libitm1.symbols
index 1b53660..6f22170 100644
--- a/debian/libitm1.symbols
+++ b/debian/libitm1.symbols
@@ -1,5 +1,5 @@
 libitm.so.1 libitm1 #MINVER#
 #include "libitm1.symbols.common"
 (arch=amd64 i386 x32)#include "libitm1.symbols.x86"
-(arch=!alpha !amd64 !ia64 !ppc64 !ppc64el !s390x !sparc64 !kfreebsd-amd64)#include "libitm1.symbols.32bit"
-(arch=alpha amd64 ia64 ppc64 ppc64el s390x sparc64 kfreebsd-amd64)#include "libitm1.symbols.64bit"
+(arch=!alpha !amd64 !arm64 !ia64 !ppc64 !ppc64el !s390x !sparc64 !kfreebsd-amd64)#include "libitm1.symbols.32bit"
+(arch=alpha amd64 arm64 ia64 ppc64 ppc64el s390x sparc64 kfreebsd-amd64)#include "libitm1.symbols.64bit"
diff --git a/debian/patches/libitm-aarch64.diff b/debian/patches/libitm-aarch64.diff
new file mode 100644
index 0000000..faf93cd
--- /dev/null
+++ b/debian/patches/libitm-aarch64.diff
@@ -0,0 +1,155 @@
+# DP: Build libitm on AArch64, patch taken from the trunk.
+--- /dev/null
++++ b/src/libitm/config/aarch64/sjlj.S
+@@ -0,0 +1,93 @@
++/* Copyright (C) 2014 Free Software Foundation, Inc.
++   Contributed by Richard Henderson <rth@redhat.com>.
++
++   This file is part of the GNU Transactional Memory Library (libitm).
++
++   Libitm is free software; you can redistribute it and/or modify it
++   under the terms of the GNU General Public License as published by
++   the Free Software Foundation; either version 3 of the License, or
++   (at your option) any later version.
++
++   Libitm is distributed in the hope that it will be useful, but WITHOUT ANY
++   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
++   FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++   more details.
++
++   Under Section 7 of GPL version 3, you are granted additional
++   permissions described in the GCC Runtime Library Exception, version
++   3.1, as published by the Free Software Foundation.
++
++   You should have received a copy of the GNU General Public License and
++   a copy of the GCC Runtime Library Exception along with this program;
++   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
++   <http://www.gnu.org/licenses/>.  */
++
++#include "asmcfi.h"
++
++	.text
++	.align	2
++	.global	_ITM_beginTransaction
++	.type	_ITM_beginTransaction, %function
++
++_ITM_beginTransaction:
++	cfi_startproc
++	mov	x1, sp
++	stp	x29, x30, [sp, -11*16]!
++	cfi_adjust_cfa_offset(11*16)
++	cfi_rel_offset(x29, 0)
++	cfi_rel_offset(x30, 8)
++	mov	x29, sp
++	stp	x19, x20, [sp, 1*16]
++	stp	x21, x22, [sp, 2*16]
++	stp	x23, x24, [sp, 3*16]
++	stp	x25, x26, [sp, 4*16]
++	stp	x27, x28, [sp, 5*16]
++	stp	d8, d9,   [sp, 6*16]
++	stp	d10, d11, [sp, 7*16]
++	stp	d12, d13, [sp, 8*16]
++	stp	d14, d15, [sp, 9*16]
++	str	x1, [sp, 10*16]
++
++	/* Invoke GTM_begin_transaction with the struct we just built.  */
++	mov	x1, sp
++	bl	GTM_begin_transaction
++
++	/* Return; we don't need to restore any of the call-saved regs.  */
++	ldp	x29, x30, [sp]
++	add     sp, sp, #11*16
++	cfi_adjust_cfa_offset(-11*16)
++	cfi_restore(x29)
++	cfi_restore(x30)
++	ret
++	cfi_endproc
++	.size	_ITM_beginTransaction, . - _ITM_beginTransaction
++
++	.align	2
++	.global	GTM_longjmp
++	.hidden	GTM_longjmp
++	.type	GTM_longjmp, %function
++
++GTM_longjmp:
++	/* The first parameter becomes the return value (x0).
++	   The third parameter is ignored for now.  */
++	cfi_startproc
++	ldp	x19, x20, [x1, 1*16]
++	ldp	x21, x22, [x1, 2*16]
++	ldp	x23, x24, [x1, 3*16]
++	ldp	x25, x26, [x1, 4*16]
++	ldp	x27, x28, [x1, 5*16]
++	ldp	d8, d9,   [x1, 6*16]
++	ldp	d10, d11, [x1, 7*16]
++	ldp	d12, d13, [x1, 8*16]
++	ldp	d14, d15, [x1, 9*16]
++	ldr	x3, [x1, 10*16]
++	ldp	x29, x30, [x1]
++	cfi_def_cfa(x1, 0)
++	mov	sp, x3
++	br	x30
++	cfi_endproc
++	.size	GTM_longjmp, . - GTM_longjmp
++
++#ifdef __linux__
++.section .note.GNU-stack, "", %progbits
++#endif
+--- /dev/null
++++ b/src/libitm/config/aarch64/target.h
+@@ -0,0 +1,45 @@
++/* Copyright (C) 2014 Free Software Foundation, Inc.
++   Contributed by Richard Henderson <rth@redhat.com>.
++
++   This file is part of the GNU Transactional Memory Library (libitm).
++
++   Libitm is free software; you can redistribute it and/or modify it
++   under the terms of the GNU General Public License as published by
++   the Free Software Foundation; either version 3 of the License, or
++   (at your option) any later version.
++
++   Libitm is distributed in the hope that it will be useful, but WITHOUT ANY
++   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
++   FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
++   more details.
++
++   Under Section 7 of GPL version 3, you are granted additional
++   permissions described in the GCC Runtime Library Exception, version
++   3.1, as published by the Free Software Foundation.
++
++   You should have received a copy of the GNU General Public License and
++   a copy of the GCC Runtime Library Exception along with this program;
++   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
++   <http://www.gnu.org/licenses/>.  */
++
++namespace GTM HIDDEN {
++
++typedef struct gtm_jmpbuf
++{
++  unsigned long long fp;	/* x29 */
++  unsigned long long pc;	/* x30 */
++  unsigned long long gr[10];	/* x19-x28 */
++  unsigned long long vr[8];	/* d8-d15 */
++  void *cfa;
++} gtm_jmpbuf;
++
++/* ??? The size of one line in hardware caches (in bytes). */
++#define HW_CACHELINE_SIZE 128
++
++static inline void
++cpu_relax (void)
++{
++  __asm volatile ("" : : : "memory");
++}
++
++} // namespace GTM
+--- a/src/libitm/configure.tgt
++++ b/src/libitm/configure.tgt
+@@ -46,6 +46,7 @@ fi
+ # Map the target cpu to an ARCH sub-directory.  At the same time,
+ # work out any special compilation flags as necessary.
+ case "${target_cpu}" in
++  aarch64*)		ARCH=aarch64 ;;
+   alpha*)		ARCH=alpha ;;
+   rs6000 | powerpc*)
+ 	XCFLAGS="${XCFLAGS} -mhtm"
diff --git a/debian/rules.patch b/debian/rules.patch
index 51acb40..0aeea5f 100644
--- a/debian/rules.patch
+++ b/debian/rules.patch
@@ -79,6 +79,7 @@ debian_patches += \
 	libitm-no-fortify-source \
 	pr59758 \
 	pr57653 \
+	libitm-aarch64 \
 
 gdb_depends := $(shell dpkg -s gdb | grep '^Depends:.*libpython3')
 ifneq (,$(findstring libpython3,$(gdb_depends)))