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authorRoland McGrath <roland@gnu.org>2006-02-28 10:18:39 +0000
committerRoland McGrath <roland@gnu.org>2006-02-28 10:18:39 +0000
commit14d44b191fb0980b22002b79a53ff2dda3120772 (patch)
tree120dc27ef68440085b083b9198913b5305c84317 /sysdeps/m68k/fpu_control.h
parenta5f2bd861c4c84ac66164951a7f32e1d6f57849c (diff)
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* sysdeps/hppa: Directory removed, saved in ports repository.
	* sysdeps/mach/hppa: Likewise.
	* sysdeps/mach/hurd/hppa: Likewise.
	* sysdeps/unix/sysv/linux/hppa: Likewise.
	* configure.in (machine): Remove hppa* cases.
	* configure: Regenerated.
	* shlib-versions: Remove hppa cases.

	* sysdeps/m68k: Directory removed, saved in ports repository.
	* sysdeps/unix/bsd/m68k: Likewise.
	* sysdeps/unix/sysv/linux/m68k: Likewise.
	* configure.in (machine): Remove m68* cases.
	* configure: Regenerated.
Diffstat (limited to 'sysdeps/m68k/fpu_control.h')
-rw-r--r--sysdeps/m68k/fpu_control.h101
1 files changed, 0 insertions, 101 deletions
diff --git a/sysdeps/m68k/fpu_control.h b/sysdeps/m68k/fpu_control.h
deleted file mode 100644
index 86358e6559..0000000000
--- a/sysdeps/m68k/fpu_control.h
+++ /dev/null
@@ -1,101 +0,0 @@
-/* 68k FPU control word definitions.
-   Copyright (C) 1996, 1997, 1998 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
-
-/*
- * Motorola floating point control register bits.
- *
- * 31-16  -> reserved (read as 0, ignored on write)
- * 15     -> enable trap for BSUN exception
- * 14     -> enable trap for SNAN exception
- * 13     -> enable trap for OPERR exception
- * 12     -> enable trap for OVFL exception
- * 11     -> enable trap for UNFL exception
- * 10     -> enable trap for DZ exception
- *  9     -> enable trap for INEX2 exception
- *  8     -> enable trap for INEX1 exception
- *  7-6   -> Precision Control
- *  5-4   -> Rounding Control
- *  3-0   -> zero (read as 0, write as 0)
- *
- *
- * Precision Control:
- * 00 - round to extended precision
- * 01 - round to single precision
- * 10 - round to double precision
- * 11 - undefined
- *
- * Rounding Control:
- * 00 - rounding to nearest (RN)
- * 01 - rounding toward zero (RZ)
- * 10 - rounding (down)toward minus infinity (RM)
- * 11 - rounding (up) toward plus infinity (RP)
- *
- * The hardware default is 0x0000. I choose 0x5400.
- */
-
-#include <features.h>
-
-/* masking of interrupts */
-#define _FPU_MASK_BSUN  0x8000
-#define _FPU_MASK_SNAN  0x4000
-#define _FPU_MASK_OPERR 0x2000
-#define _FPU_MASK_OVFL  0x1000
-#define _FPU_MASK_UNFL  0x0800
-#define _FPU_MASK_DZ    0x0400
-#define _FPU_MASK_INEX1 0x0200
-#define _FPU_MASK_INEX2 0x0100
-
-/* precision control */
-#define _FPU_EXTENDED 0x00   /* RECOMMENDED */
-#define _FPU_DOUBLE   0x80
-#define _FPU_SINGLE   0x40     /* DO NOT USE */
-
-/* rounding control */
-#define _FPU_RC_NEAREST 0x00    /* RECOMMENDED */
-#define _FPU_RC_ZERO    0x10
-#define _FPU_RC_DOWN    0x20
-#define _FPU_RC_UP      0x30
-
-#define _FPU_RESERVED 0xFFFF000F  /* Reserved bits in fpucr */
-
-
-/* Now two recommended fpucr */
-
-/* The fdlibm code requires no interrupts for exceptions.  Don't
-   change the rounding mode, it would break long double I/O!  */
-#define _FPU_DEFAULT  0x00000000
-
-/* IEEE:  same as above, but exceptions.  We must make it non-zero so
-   that __setfpucw works.  This bit will be ignored.  */
-#define _FPU_IEEE     0x00000001
-
-/* Type of the control word.  */
-typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__SI__)));
-
-/* Macros for accessing the hardware control word.  */
-#define _FPU_GETCW(cw) __asm__ ("fmove%.l %!, %0" : "=dm" (cw))
-#define _FPU_SETCW(cw) __asm__ volatile ("fmove%.l %0, %!" : : "dm" (cw))
-
-/* Default control word set at startup.  */
-extern fpu_control_t __fpu_control;
-
-#endif /* _M68K_FPU_CONTROL_H */