LXR linux/arch/mips/kernel/signal-common.h

   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 k_sigaction *ka, 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