gcc:

	* config/alpha/crtfastmath.c: Move to ../libgcc/config/alpha.
	* config/alpha/t-crtfm: Remove.
	* config/i386/crtfastmath.c: Move to ../libgcc/config/i386.
	* config/i386/t-crtfm: Remove.
	* config/ia64/crtfastmath.c: Move to ../libgcc/config/ia64.
	* config/mips/crtfastmath.c: Move to ../libgcc/config/mips.
	* config/sparc/crtfastmath.c: Move to ../libgcc/config/sparc.
	* config/sparc/t-crtfm: Remove.

	* config.gcc (alpha*-*-linux*): Remove alpha/t-crtfm from tmake_file.
	(alpha*-*-freebsd*): Likewise.
	(i[34567]86-*-darwin*): Remove i386/t-crtfm from tmake_file.
	(x86_64-*-darwin*): Likewise.
	(i[34567]86-*-linux*): Likewise.
	(x86_64-*-linux*): Likewise.
	(x86_64-*-mingw*): Likewise.
	(ia64*-*-elf*): Remove crtfastmath.o from extra_parts.
	(ia64*-*-freebsd*): Likewise.
	(ia64*-*-linux*): Likewise.
	(mips64*-*-linux*): Likewise.
	(mips*-*-linux*): Likewise.
	(sparc-*-linux*): Remove sparc/t-crtfm from tmake_file.
	(sparc64-*-linux*): Likewise.
	(sparc64-*-freebsd*): Likewise.

	libgcc:
	* config/alpha/crtfastmath.c: New file.
	* config/i386/crtfastmath.c: New file.
	* config/ia64/crtfastmath.c: New file.
	* config/mips/crtfastmath.c: New file.
	* config/sparc/crtfastmath.c: New file.

	* config/t-crtfm (crtfastmath.o): Use $(srcdir) to refer to
	crtfastmath.c.
	Add -frandom-seed=gcc-crtfastmath.
	* config/alpha/t-crtfm: Remove.
	* config/i386/t-crtfm: Use $(srcdir) to refer to crtfastmath.c.
	* config/ia64/t-ia64 (crtfastmath.o): Remove.

	* config.host (alpha*-*-linux*): Replace alpha/t-crtfm by t-crtfm.
	(alpha*-dec-osf5.1*): Likewise.
	(alpha*-*-freebsd*): Add t-crtfm to tmake_file.
	Add crtfastmath.o to extra_parts.
	(i[34567]86-*-darwin*): Add i386/t-crtfm to tmake_file.
	Add crtfastmath.o to extra_parts.
	(x86_64-*-darwin*): Likewise.
	(x86_64-*-mingw*): Likewise.
	(ia64*-*-elf*): Add t-crtfm to tmake_file.
	(ia64*-*-freebsd*): Likewise.
	(ia64*-*-linux*): Likewise.
	(sparc64-*-freebsd*): Add t-crtfm to tmake_file.
	Add crtfastmath.o to extra_parts.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@176241 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 53 insertions, 0 deletions

diff --git a/libgcc/config/mips/crtfastmath.c b/libgcc/config/mips/crtfastmath.c
new file mode 100644
index 00000000000..a9586b0a797
--- /dev/null
+++ b/libgcc/config/mips/crtfastmath.c
@@ -0,0 +1,53 @@
+/* Copyright (C) 2010 Free Software Foundation, Inc. 
+
+   This file is part of GCC.
+
+   GCC 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.
+
+   GCC 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/>.  */
+
+#ifdef __mips_hard_float
+
+/* Flush denormalized numbers to zero.  */
+#define _FPU_FLUSH_TZ   0x1000000
+
+/* Rounding control.  */
+#define _FPU_RC_NEAREST 0x0     /* RECOMMENDED */
+#define _FPU_RC_ZERO    0x1
+#define _FPU_RC_UP      0x2
+#define _FPU_RC_DOWN    0x3
+
+/* Enable interrupts for IEEE exceptions.  */
+#define _FPU_IEEE     0x00000F80
+
+/* Macros for accessing the hardware control word.  */
+#define _FPU_GETCW(cw) __asm__ ("cfc1 %0,$31" : "=r" (cw))
+#define _FPU_SETCW(cw) __asm__ ("ctc1 %0,$31" : : "r" (cw))
+
+static void __attribute__((constructor))
+set_fast_math (void)
+{
+  unsigned int fcr;
+
+  /* Flush to zero, round to nearest, IEEE exceptions disabled.  */
+  fcr = _FPU_FLUSH_TZ | _FPU_RC_NEAREST;
+
+  _FPU_SETCW(fcr);
+}
+
+#endif /* __mips_hard_float */