From 027d12aeef4386c638f73a4df7171a5d027604f4 Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Wed, 8 Oct 2003 19:30:43 +0000
Subject: Patch from Atsushi Nemoto (with some additions):

Current uClibc contains only one fpu_control.h and it is i386 version.
This is a patch to use platform specific fpu_control.h.  All new files
come from glibc 2.3.2.  This patch is against 0.9.21 but also can be
applied to CVS as is.
---
 libc/sysdeps/linux/sh/Makefile      |  1 +
 libc/sysdeps/linux/sh/fpu_control.h | 56 +++++++++++++++++++++++++++++++++++++
 2 files changed, 57 insertions(+)
 create mode 100644 libc/sysdeps/linux/sh/fpu_control.h

(limited to 'libc/sysdeps/linux/sh')

diff --git a/libc/sysdeps/linux/sh/Makefile b/libc/sysdeps/linux/sh/Makefile
index 758d4462d..b4266c9f5 100644
--- a/libc/sysdeps/linux/sh/Makefile
+++ b/libc/sysdeps/linux/sh/Makefile
@@ -64,6 +64,7 @@ gcrt1.o: $(CRT0_DEPS)
 endif
 
 headers:
+	cd $(TOPDIR)/include && ln -fs ../libc/sysdeps/linux/sh/fpu_control.h .
 
 clean:
 	rm -f *.[oa] *~ core
diff --git a/libc/sysdeps/linux/sh/fpu_control.h b/libc/sysdeps/linux/sh/fpu_control.h
new file mode 100644
index 000000000..43eb9e549
--- /dev/null
+++ b/libc/sysdeps/linux/sh/fpu_control.h
@@ -0,0 +1,56 @@
+/* FPU control word definitions.  SH version.
+   Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _FPU_CONTROL_H
+#define _FPU_CONTROL_H
+
+/* masking of interrupts */
+#define _FPU_MASK_VM	0x0800	/* Invalid operation */
+#define _FPU_MASK_ZM	0x0400	/* Division by zero  */
+#define _FPU_MASK_OM	0x0200	/* Overflow	     */
+#define _FPU_MASK_UM	0x0100	/* Underflow	     */
+#define _FPU_MASK_IM	0x0080	/* Inexact operation */
+
+/* rounding control */
+#define _FPU_RC_NEAREST 0x0	/* RECOMMENDED */
+#define _FPU_RC_ZERO	0x1
+
+#define _FPU_RESERVED 0xffc00000  /* These bits are reserved.  */
+
+/* The fdlibm code requires strict IEEE double precision arithmetic,
+   and no interrupts for exceptions, rounding to nearest.  */
+#define _FPU_DEFAULT	0x00080000 /* Default value.  */
+#define _FPU_IEEE	0x00080f80 /* Default + exceptions enabled. */
+
+/* Type of the control word.  */
+typedef unsigned int fpu_control_t;
+
+/* Macros for accessing the hardware control word.  */
+#define _FPU_GETCW(cw) __asm__ ("sts fpscr,%0" : "=r" (cw))
+
+#if defined __GNUC__
+#define _FPU_SETCW(cw) __set_fpscr ((cw))
+#else
+#define _FPU_SETCW(cw) __asm__ ("lds %0,fpscr" : : "r" (cw))
+#endif
+
+/* Default control word set at startup.	 */
+extern fpu_control_t __fpu_control;
+
+#endif /* _FPU_CONTROL_H */
-- 
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