1. 根目录:
2. arch
3. hexagon
4. include
5. uapi
6. asm
7. unistd.h

/*
 * Syscall support for Hexagon
 *
 * Copyright (c) 2010-2011, The Linux Foundation. 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 version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * 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.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

/*
 *  The kernel pulls this unistd.h in three different ways:
 *  1.  the "normal" way which gets all the __NR defines
 *  2.  with __SYSCALL defined to produce function declarations
 *  3.  with __SYSCALL defined to produce syscall table initialization
 *  See also:  syscalltab.c
 */

#define sys_mmap2 sys_mmap_pgoff
#define __ARCH_WANT_SYS_EXECVE
#define __ARCH_WANT_SYS_CLONE
#define __ARCH_WANT_SYS_VFORK
#define __ARCH_WANT_SYS_FORK

#include <asm-generic/unistd.h>