File: fp.h

package info (click to toggle)
kernel-source-sparc-2.2.1 2.2.1
  • links: PTS
  • area: main
  • in suites: slink
  • size: 62,800 kB
  • ctags: 188,320
  • sloc: ansic: 1,114,164; asm: 49,922; makefile: 8,272; sh: 1,831; perl: 1,584; tcl: 409; lisp: 218; cpp: 186; awk: 133; sed: 72
file content (30 lines) | stat: -rw-r--r-- 772 bytes parent folder | download | duplicates (3) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
 
/* $Id: fp.h,v 1.1 1998/07/16 17:01:54 ralf Exp $
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1998 by Ralf Baechle
 */

/*
 * Activate and deactive the floatingpoint accelerator.
 */
#define enable_cp1()							\
	__asm__ __volatile__(						\
		".set\tnoat\n\t"					\
		"mfc0\t$1,$12\n\t"					\
		"or\t$1,%0\n\t"						\
		"mtc0\t$1,$12\n\t"					\
		".set\tat"						\
		: : "r" (ST0_CU1));

#define disable_cp1()							\
	__asm__ __volatile__(						\
		".set\tnoat\n\t"					\
		"mfc0\t$1,$12\n\t"					\
		"or\t$1,%0\n\t"						\
		"xor\t$1,%0\n\t"					\
		"mtc0\t$1,$12\n\t"					\
		".set\tat"						\
		: : "r" (ST0_CU1));