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Linux/arch/mips/kernel/signal-common.h

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  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 ksignal *ksig, 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 

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