about summary refs log tree commit diff
path: root/sysdeps/alpha/fpu/fpu_control.h
diff options
context:
space:
mode:
authorRoland McGrath <roland@gnu.org>2008-11-26 07:26:32 +0000
committerRoland McGrath <roland@gnu.org>2008-11-26 07:26:32 +0000
commitc0439b95b88bccacb5562e372f881beb23376a72 (patch)
treeaea008f060bef693d43f285f5adb5ece05cb7db6 /sysdeps/alpha/fpu/fpu_control.h
parentf1092afe15ad779d61a1420c05854a9122d3ce5e (diff)
downloadglibc-c0439b95b88bccacb5562e372f881beb23376a72.tar.gz
glibc-c0439b95b88bccacb5562e372f881beb23376a72.tar.xz
glibc-c0439b95b88bccacb5562e372f881beb23376a72.zip
Moved alpha to ports repository.
2008-11-25  Roland McGrath  <roland@redhat.com>

	* sysdeps/alpha, sysdeps/unix/bsd/osf/alpha,
	sysdeps/unix/bsd/Attic/osf1/alpha, sysdeps/unix/sysv/linux/alpha,
	sysdeps/unix/sysv/linux/alpha/alpha, sysdeps/unix/alpha,
	sysdeps/mach/alpha, sysdeps/mach/hurd/alpha:
	Subdirectories moved to ports repository.
	* configure.in (base_machine): Remove alpha case.
Diffstat (limited to 'sysdeps/alpha/fpu/fpu_control.h')
-rw-r--r--sysdeps/alpha/fpu/fpu_control.h106
1 files changed, 0 insertions, 106 deletions
diff --git a/sysdeps/alpha/fpu/fpu_control.h b/sysdeps/alpha/fpu/fpu_control.h
deleted file mode 100644
index 28acdf1704..0000000000
--- a/sysdeps/alpha/fpu/fpu_control.h
+++ /dev/null
@@ -1,106 +0,0 @@
-/* FPU control word bits.  Alpha-mapped-to-Intel version.
-   Copyright (C) 1996, 1998, 2000, 2002 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Olaf Flebbe.
-
-   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 _ALPHA_FPU_CONTROL_H
-#define _ALPHA_FPU_CONTROL_H
-
-/*
- * Since many programs seem to hardcode the values passed to __setfpucw()
- * (rather than using the manifest constants) we emulate the x87 interface
- * here (at least where this makes sense).
- *
- *     15-13    12  11-10  9-8     7-6     5    4    3    2    1    0
- * | reserved | IC | RC  | PC | reserved | PM | UM | OM | ZM | DM | IM
- *
- * IM: Invalid operation mask
- * DM: Denormalized operand mask
- * ZM: Zero-divide mask
- * OM: Overflow mask
- * UM: Underflow mask
- * PM: Precision (inexact result) mask
- *
- * Mask bit is 1 means no interrupt.
- *
- * PC: Precision control
- * 11 - round to extended precision
- * 10 - round to double precision
- * 00 - round to single precision
- *
- * RC: Rounding control
- * 00 - rounding to nearest
- * 01 - rounding down (toward - infinity)
- * 10 - rounding up (toward + infinity)
- * 11 - rounding toward zero
- *
- * IC: Infinity control
- * That is for 8087 and 80287 only.
- *
- * The hardware default is 0x037f. I choose 0x1372.
- */
-
-#include <features.h>
-
-/* masking of interrupts */
-#define _FPU_MASK_IM  0x01
-#define _FPU_MASK_DM  0x02
-#define _FPU_MASK_ZM  0x04
-#define _FPU_MASK_OM  0x08
-#define _FPU_MASK_UM  0x10
-#define _FPU_MASK_PM  0x20
-
-/* precision control -- without effect on Alpha */
-#define _FPU_EXTENDED 0x300   /* RECOMMENDED */
-#define _FPU_DOUBLE   0x200
-#define _FPU_SINGLE   0x0     /* DO NOT USE */
-
-/*
- * rounding control---notice that on the Alpha this affects only
- * instructions with the dynamic rounding mode qualifier (/d).
- */
-#define _FPU_RC_NEAREST 0x000 /* RECOMMENDED */
-#define _FPU_RC_DOWN    0x400
-#define _FPU_RC_UP      0x800
-#define _FPU_RC_ZERO    0xC00
-
-#define _FPU_RESERVED 0xF0C0  /* Reserved bits in cw */
-
-
-/* Now two recommended cw */
-
-/* Linux default:
-     - extended precision
-     - rounding to positive infinity.  There is no /p instruction
-       qualifier.  By setting the dynamic rounding mode to +infinity,
-       one can use /d to get round to +infinity with no extra overhead
-       (so long as the default isn't changed, of course...)
-     - no exceptions enabled.  */
-
-#define _FPU_DEFAULT  0x137f
-
-/* IEEE:  same as above. */
-#define _FPU_IEEE     0x137f
-
-/* Type of the control word.  */
-typedef unsigned int fpu_control_t;
-
-/* Default control word set at startup.  */
-extern fpu_control_t __fpu_control;
-
-#endif	/* _ALPHA_FPU_CONTROL */