/gcc/

2014-10-06  Yvan Roux  <yvan.roux@linaro.org>

	Backport from trunk r215086.
	2014-09-09  Marcus Shawcroft  <marcus.shawcroft@arm.com>
	Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

	 * config/aarch64/aarch64-elf-raw.h (ENDFILE_SPEC): Add crtfastmath.o.
         * config/aarch64/aarch64-linux.h (GNU_USER_TARGET_MATH_ENDFILE_SPEC):
	Define.
        (ENDFILE_SPEC): Define and use GNU_USER_TARGET_MATH_ENDFILE_SPEC.

/libgcc/
2014-10-06  Yvan Roux  <yvan.roux@linaro.org>

	Backport from trunk r215086.
	2014-09-09  Marcus Shawcroft  <marcus.shawcroft@arm.com>
	Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

	* config.host (aarch64*): Include crtfastmath.o and
	t-crtfm.
	* config/aarch64/crtfastmath.c: New file.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/linaro/gcc-4_9-branch@215928 138bc75d-0d04-0410-961f-82ee72b054a4

3 files changed, 50 insertions, 2 deletions

diff --git a/libgcc/ChangeLog.linaro b/libgcc/ChangeLog.linaro
index 3f3325e871a..5430d161854 100644
--- a/libgcc/ChangeLog.linaro
+++ b/libgcc/ChangeLog.linaro
@@ -1,3 +1,13 @@
+2014-10-06  Yvan Roux  <yvan.roux@linaro.org>
+
+	Backport from trunk r215086.
+	2014-09-09  Marcus Shawcroft  <marcus.shawcroft@arm.com>
+	Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
+
+	* config.host (aarch64*): Include crtfastmath.o and
+	t-crtfm.
+	* config/aarch64/crtfastmath.c: New file.
+
 2014-09-10  Yvan Roux  <yvan.roux@linaro.org>
 
 	GCC Linaro 4.9-2014.09 released.
diff --git a/libgcc/config.host b/libgcc/config.host
index f4a74287293..ac0effbedc1 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -316,13 +316,15 @@ esac
 case ${host} in
 aarch64*-*-elf)
 	extra_parts="$extra_parts crtbegin.o crtend.o crti.o crtn.o"
+	extra_parts="$extra_parts crtfastmath.o"
 	tmake_file="${tmake_file} ${cpu_type}/t-aarch64"
-	tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp"
+	tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp t-crtfm"
 	;;
 aarch64*-*-linux*)
+	extra_parts="$extra_parts crtfastmath.o"
 	md_unwind_header=aarch64/linux-unwind.h
 	tmake_file="${tmake_file} ${cpu_type}/t-aarch64"
-	tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp"
+	tmake_file="${tmake_file} ${cpu_type}/t-softfp t-softfp t-crtfm"
 	;;
 alpha*-*-linux*)
 	tmake_file="${tmake_file} alpha/t-alpha alpha/t-ieee t-crtfm alpha/t-linux"
diff --git a/libgcc/config/aarch64/crtfastmath.c b/libgcc/config/aarch64/crtfastmath.c
new file mode 100644
index 00000000000..3a8ddfca89d
--- /dev/null
+++ b/libgcc/config/aarch64/crtfastmath.c
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2014 Free Software Foundation, Inc.
+ *
+ * This file 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, or (at your option) any
+ * later version.
+ *
+ * This file 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/>.
+ */
+
+#define _FPU_FPCR_FZ 0x1000000
+
+#define _FPU_SETCW(fpcr)				   \
+  {							   \
+    __asm__ __volatile__ ("msr	fpcr, %0" : : "r" (fpcr)); \
+  }
+
+static void __attribute__((constructor))
+set_fast_math (void)
+{
+  /* Flush to zero, round to nearest, IEEE exceptions disabled.  */
+  _FPU_SETCW (_FPU_FPCR_FZ);
+}