Add crtfastmath for AArch64.

gcc/Changelog

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/Changelog

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

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

Co-Authored-By: Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
From-SVN: r215086

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 79c9df7abdb4e523a2598bfa7de3081834ba5a3b..a447daf1f89bce7308194a4388397e5d086f0f31 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,11 @@
+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.
+
 2014-09-09  David Malcolm  <dmalcolm@redhat.com>
 
        * rtl.h (INSN_LOCATION): Strengthen param from const_rtx to

diff --git a/gcc/config/aarch64/aarch64-elf-raw.h b/gcc/config/aarch64/aarch64-elf-raw.h
index adec7e7bad8e08debb6a22e75efe5c55633a849d..b9d4e8db8f06e3dcb5623a15481aae99e116fd37 100644 (file)
--- a/gcc/config/aarch64/aarch64-elf-raw.h
+++ b/gcc/config/aarch64/aarch64-elf-raw.h
@@ -23,7 +23,9 @@
 #define GCC_AARCH64_ELF_RAW_H
 
 #define STARTFILE_SPEC " crti%O%s crtbegin%O%s crt0%O%s"
-#define ENDFILE_SPEC " crtend%O%s crtn%O%s"
+#define ENDFILE_SPEC \
+  " crtend%O%s crtn%O%s " \
+  "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s}"
 
 #ifndef LINK_SPEC
 #define LINK_SPEC "%{mbig-endian:-EB} %{mlittle-endian:-EL} -X \

diff --git a/gcc/config/aarch64/aarch64-linux.h b/gcc/config/aarch64/aarch64-linux.h
index 8d203101d360f799c5d71f2747ea183617ddfb82..1731432a4d1ff45b719f6579af39c5e306a609b8 100644 (file)
--- a/gcc/config/aarch64/aarch64-linux.h
+++ b/gcc/config/aarch64/aarch64-linux.h
@@ -37,6 +37,14 @@
 
 #define LINK_SPEC LINUX_TARGET_LINK_SPEC
 
+#define GNU_USER_TARGET_MATHFILE_SPEC \
+  "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s}"
+
+#undef ENDFILE_SPEC
+#define ENDFILE_SPEC   \
+  GNU_USER_TARGET_MATHFILE_SPEC " " \
+  GNU_USER_TARGET_ENDFILE_SPEC
+
 #define TARGET_OS_CPP_BUILTINS()               \
   do                                           \
     {                                          \

diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index 531bdcaa2381528b80b078266586e199242f6679..317dc29b98519873ca37bf9ab8d22e2d4676ace7 100644 (file)
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,10 @@
+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.
+
 2014-09-08  Trevor Saunders  <tsaunders@mozilla.com>
 
        * config.host: Remove picochip support.

diff --git a/libgcc/config.host b/libgcc/config.host
index 6ea18874132cabbbe75bcd92bc4b36c8475881e7..2f6569bf8fbb5923b12069c2033fb5e7bb96c4be 100644 (file)
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -322,13 +322,15 @@ 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 (file)
index 0000000..3a8ddfc
--- /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);
+}