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#define lock_fpu_owner() ({ preempt_disable(); pagefault_disable(); }) 32#define unlock_fpu_owner() ({ pagefault_enable(); preempt_enable(); }) 33 34/* Assembly functions to move context to/from the FPU */ 35extern asmlinkage int 36_save_fp_context(void __user *fpregs, void __user *csr); 37extern asmlinkage int 38_restore_fp_context(void __user *fpregs, void __user *csr); 39 40extern asmlinkage int _save_msa_all_upper(void __user *buf); 41extern asmlinkage int _restore_msa_all_upper(void __user *buf); 42 43#endif /* __SIGNAL_COMMON_H */ 44