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
  15 extern void do_signal(struct pt_regs *regs, unsigned long thread_info_flags);
  16
  17 extern void __user * get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
  18                                   size_t frame_size);
  19 extern void restore_sigmask(sigset_t *set);
  20
  21 extern int handle_signal32(unsigned long sig, struct k_sigaction *ka,
  22                            siginfo_t *info, sigset_t *oldset,
  23                            struct pt_regs *regs);
  24
  25 extern int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka,
  26                               siginfo_t *info, sigset_t *oldset,
  27                               struct pt_regs *regs);
  28
  29 extern unsigned long copy_fpr_to_user(void __user *to,
  30                                       struct task_struct *task);
  31 extern unsigned long copy_fpr_from_user(struct task_struct *task,
  32                                         void __user *from);
  33 #ifdef CONFIG_VSX
  34 extern unsigned long copy_vsx_to_user(void __user *to,
  35                                       struct task_struct *task);
  36 extern unsigned long copy_vsx_from_user(struct task_struct *task,
  37                                         void __user *from);
  38 #endif
  39
  40 #ifdef CONFIG_PPC64
  41
  42 static inline int is_32bit_task(void)
  43 {
  44         return test_thread_flag(TIF_32BIT);
  45 }
  46
  47 extern 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
  53 static inline int is_32bit_task(void)
  54 {
  55         return 1;
  56 }
  57
  58 static 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 */