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 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
  23
  24 /*
  25  * Determine which stack to use..
  26  */
  27 extern void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
  28                                  size_t frame_size);
  29 /*
  30  * install trampoline code to get back from the sig handler
  31  */
  32 extern int install_sigtramp(unsigned int __user *tramp, unsigned int syscall);
  33
  34 /* Check and clear pending FPU exceptions in saved CSR */
  35 extern int fpcsr_pending(unsigned int __user *fpcsr);
  36
  37 /* Make sure we will not lose FPU ownership */
  38 #ifdef CONFIG_PREEMPT
  39 #define lock_fpu_owner()        preempt_disable()
  40 #define unlock_fpu_owner()      preempt_enable()
  41 #else
  42 #define lock_fpu_owner()        pagefault_disable()
  43 #define unlock_fpu_owner()      pagefault_enable()
  44 #endif
  45
  46 #endif  /* __SIGNAL_COMMON_H */