release/src-rt-6.x.4708/linux/linux-2.6.36/arch/avr32/kernel/sys_avr32.c

   1 /*
   2  * Copyright (C) 2004-2006 Atmel Corporation
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  */
   8 #include <linux/unistd.h>
   9
  10 int kernel_execve(const char *file,
  11                   const char *const *argv,
  12                   const char *const *envp)
  13 {
  14         register long scno asm("r8") = __NR_execve;
  15         register long sc1 asm("r12") = (long)file;
  16         register long sc2 asm("r11") = (long)argv;
  17         register long sc3 asm("r10") = (long)envp;
  18
  19         asm volatile("scall"
  20                      : "=r"(sc1)
  21                      : "r"(scno), "0"(sc1), "r"(sc2), "r"(sc3)
  22                      : "cc", "memory");
  23         return sc1;
  24 }