[uClibc-cvs] uClibc/libc/sysdeps/linux/sh fpu_control.h, NONE, 1.1 Makefile, 1.22, 1.23

[Erik Andersen]

Update of /var/cvs/uClibc/libc/sysdeps/linux/sh
In directory winder:/tmp/cvs-serv31511/sh

Modified Files:
	Makefile 
Added Files:
	fpu_control.h 
Log Message:
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.



Index: Makefile
===================================================================
RCS file: /var/cvs/uClibc/libc/sysdeps/linux/sh/Makefile,v
retrieving revision 1.22
retrieving revision 1.23
diff -u -d -r1.22 -r1.23
--- Makefile	21 Sep 2003 19:41:52 -0000	1.22
+++ Makefile	8 Oct 2003 19:30:41 -0000	1.23
@@ -64,6 +64,7 @@
 endif
 
 headers:
+	cd $(TOPDIR)/include && ln -fs ../libc/sysdeps/linux/sh/fpu_control.h .
 
 clean:
 	rm -f *.[oa] *~ core

--- NEW FILE: fpu_control.h ---
/* 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 */