1. 根目录:
2. arch
3. tile
4. include
5. asm
6. syscalls.h

/*
 * syscalls.h - Linux syscall interfaces (arch-specific)
 *
 * Copyright (c) 2008 Jaswinder Singh Rajput
 * Copyright 2010 Tilera Corporation. All Rights Reserved.
 *
 *   This program is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU General Public License
 *   as published by the Free Software Foundation, version 2.
 *
 *   This program is distributed in the hope that it will be useful, but
 *   WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
 *   NON INFRINGEMENT.  See the GNU General Public License for
 *   more details.
 */

#ifndef _ASM_TILE_SYSCALLS_H
#define _ASM_TILE_SYSCALLS_H

#include <linux/compiler.h>
#include <linux/linkage.h>
#include <linux/signal.h>
#include <linux/types.h>
#include <linux/compat.h>

/* The array of function pointers for syscalls. */
extern void *sys_call_table[];
#ifdef CONFIG_COMPAT
extern void *compat_sys_call_table[];
#endif

/*
 * Note that by convention, any syscall which requires the current
 * register set takes an additional "struct pt_regs *" pointer; a
 * _sys_xxx() trampoline in intvec*.S just sets up the pointer and
 * jumps to sys_xxx().
 */

/* kernel/sys.c */
ssize_t sys32_readahead(int fd, u32 offset_lo, u32 offset_hi, u32 count);
long sys32_fadvise64(int fd, u32 offset_lo, u32 offset_hi,
		     u32 len, int advice);
int sys32_fadvise64_64(int fd, u32 offset_lo, u32 offset_hi,
		       u32 len_lo, u32 len_hi, int advice);
long sys_flush_cache(void);
#ifndef __tilegx__  /* No mmap() in the 32-bit kernel. */
#define sys_mmap sys_mmap
#endif

#ifndef __tilegx__
/* mm/fault.c */
long sys_cmpxchg_badaddr(unsigned long address, struct pt_regs *);
long _sys_cmpxchg_badaddr(unsigned long address);
#endif

#ifdef CONFIG_COMPAT
/* These four are not defined for 64-bit, but serve as "compat" syscalls. */
long sys_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg);
long sys_fstat64(unsigned long fd, struct stat64 __user *statbuf);
long sys_truncate64(const char __user *path, loff_t length);
long sys_ftruncate64(unsigned int fd, loff_t length);
#endif

/* These are the intvec*.S trampolines. */
long _sys_sigaltstack(const stack_t __user *, stack_t __user *);
long _sys_rt_sigreturn(void);
long _sys_clone(unsigned long clone_flags, unsigned long newsp,
		void __user *parent_tid, void __user *child_tid);
long _sys_execve(const char __user *filename,
		 const char __user *const __user *argv,
		 const char __user *const __user *envp);

#include <asm-generic/syscalls.h>

#endif /* _ASM_TILE_SYSCALLS_H */