LXR linux/arch/powerpc/kernel/signal.h

   1/*
   2 *    Copyright (c) 2007 Benjamin Herrenschmidt, IBM Coproration
   3 *    Extracted from signal_32.c and signal_64.c
   4 *
   5 * This file is subject to the terms and conditions of the GNU General
   6 * Public License.  See the file README.legal in the main directory of
   7 * this archive for more details.
   8 */
   9
  10#ifndef _POWERPC_ARCH_SIGNAL_H
  11#define _POWERPC_ARCH_SIGNAL_H
  12
  13#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
  14
  15extern void do_signal(struct pt_regs *regs, unsigned long thread_info_flags);
  16
  17extern void __user * get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
  18                                  size_t frame_size);
  19extern void restore_sigmask(sigset_t *set);
  20
  21extern int handle_signal32(unsigned long sig, struct k_sigaction *ka,
  22                           siginfo_t *info, sigset_t *oldset,
  23                           struct pt_regs *regs);
  24
  25extern int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka,
  26                              siginfo_t *info, sigset_t *oldset,
  27                              struct pt_regs *regs);
  28
  29extern unsigned long copy_fpr_to_user(void __user *to,
  30                                      struct task_struct *task);
  31extern unsigned long copy_fpr_from_user(struct task_struct *task,
  32                                        void __user *from);
  33#ifdef CONFIG_VSX
  34extern unsigned long copy_vsx_to_user(void __user *to,
  35                                      struct task_struct *task);
  36extern unsigned long copy_vsx_from_user(struct task_struct *task,
  37                                        void __user *from);
  38#endif
  39
  40#ifdef CONFIG_PPC64
  41
  42static inline int is_32bit_task(void)
  43{
  44        return test_thread_flag(TIF_32BIT);
  45}
  46
  47extern int handle_rt_signal64(int signr, struct k_sigaction *ka,
  48                              siginfo_t *info, sigset_t *set,
  49                              struct pt_regs *regs);
  50
  51#else /* CONFIG_PPC64 */
  52
  53static inline int is_32bit_task(void)
  54{
  55        return 1;
  56}
  57
  58static inline int handle_rt_signal64(int signr, struct k_sigaction *ka,
  59                                     siginfo_t *info, sigset_t *set,
  60                                     struct pt_regs *regs)
  61{
  62        return -EFAULT;
  63}
  64
  65#endif /* !defined(CONFIG_PPC64) */
  66
  67#endif  /* _POWERPC_ARCH_SIGNAL_H */
  68