1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License.  See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1991, 1992  Linus Torvalds
7 * Copyright (C) 1994 - 2000  Ralf Baechle
8 * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
9 */
10
11#ifndef __SIGNAL_COMMON_H
12#define __SIGNAL_COMMON_H
13
14/* #define DEBUG_SIG */
15
16#ifdef DEBUG_SIG
17#  define DEBUGP(fmt, args...) printk("%s: " fmt, __func__, ##args)
18#else
19#  define DEBUGP(fmt, args...)
20#endif
21
22/*
23 * Determine which stack to use..
24 */
25extern void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs,
26				 size_t frame_size);
27/* Check and clear pending FPU exceptions in saved CSR */
28extern int fpcsr_pending(unsigned int __user *fpcsr);
29
30/* Make sure we will not lose FPU ownership */
31#ifdef CONFIG_PREEMPT
32#define lock_fpu_owner()	preempt_disable()
33#define unlock_fpu_owner()	preempt_enable()
34#else
35#define lock_fpu_owner()	pagefault_disable()
36#define unlock_fpu_owner()	pagefault_enable()
37#endif
38
39#endif	/* __SIGNAL_COMMON_H */
40