1. 根目录:
2. arch
3. powerpc
4. kernel
5. signal.h

/*
 *    Copyright (c) 2007 Benjamin Herrenschmidt, IBM Coproration
 *    Extracted from signal_32.c and signal_64.c
 *
 * This file is subject to the terms and conditions of the GNU General
 * Public License.  See the file README.legal in the main directory of
 * this archive for more details.
 */

#ifndef _POWERPC_ARCH_SIGNAL_H
#define _POWERPC_ARCH_SIGNAL_H

extern void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags);

extern void __user * get_sigframe(struct k_sigaction *ka, unsigned long sp,
				  size_t frame_size, int is_32);

extern int handle_signal32(unsigned long sig, struct k_sigaction *ka,
			   siginfo_t *info, sigset_t *oldset,
			   struct pt_regs *regs);

extern int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka,
			      siginfo_t *info, sigset_t *oldset,
			      struct pt_regs *regs);

extern unsigned long copy_fpr_to_user(void __user *to,
				      struct task_struct *task);
extern unsigned long copy_transact_fpr_to_user(void __user *to,
					       struct task_struct *task);
extern unsigned long copy_fpr_from_user(struct task_struct *task,
					void __user *from);
extern unsigned long copy_transact_fpr_from_user(struct task_struct *task,
						 void __user *from);
#ifdef CONFIG_VSX
extern unsigned long copy_vsx_to_user(void __user *to,
				      struct task_struct *task);
extern unsigned long copy_transact_vsx_to_user(void __user *to,
					       struct task_struct *task);
extern unsigned long copy_vsx_from_user(struct task_struct *task,
					void __user *from);
extern unsigned long copy_transact_vsx_from_user(struct task_struct *task,
						 void __user *from);
#endif

#ifdef CONFIG_PPC64

extern int handle_rt_signal64(int signr, struct k_sigaction *ka,
			      siginfo_t *info, sigset_t *set,
			      struct pt_regs *regs);

#else /* CONFIG_PPC64 */

static inline int handle_rt_signal64(int signr, struct k_sigaction *ka,
				     siginfo_t *info, sigset_t *set,
				     struct pt_regs *regs)
{
	return -EFAULT;
}

#endif /* !defined(CONFIG_PPC64) */

#endif  /* _POWERPC_ARCH_SIGNAL_H */