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 */ 25 extern void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, 26 size_t frame_size); 27 /* Check and clear pending FPU exceptions in saved CSR */ 28 extern 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