1/* 2 * arch/sh/kernel/sys_sh64.c 3 * 4 * Copyright (C) 2000, 2001 Paolo Alberelli 5 * 6 * This file contains various random system calls that 7 * have a non-standard calling sequence on the Linux/SH5 8 * platform. 9 * 10 * This file is subject to the terms and conditions of the GNU General Public 11 * License. See the file "COPYING" in the main directory of this archive 12 * for more details. 13 */ 14#include <linux/errno.h> 15#include <linux/rwsem.h> 16#include <linux/sched.h> 17#include <linux/mm.h> 18#include <linux/fs.h> 19#include <linux/smp.h> 20#include <linux/sem.h> 21#include <linux/msg.h> 22#include <linux/shm.h> 23#include <linux/stat.h> 24#include <linux/mman.h> 25#include <linux/file.h> 26#include <linux/syscalls.h> 27#include <linux/ipc.h> 28#include <asm/uaccess.h> 29#include <asm/ptrace.h> 30#include <asm/unistd.h> 31 32/* 33 * Do a system call from kernel instead of calling sys_execve so we 34 * end up with proper pt_regs. 35 */ 36int kernel_execve(const char *filename, 37 const char *const argv[], 38 const char *const envp[]) 39{ 40 register unsigned long __sc0 __asm__ ("r9") = ((0x13 << 16) | __NR_execve); 41 register unsigned long __sc2 __asm__ ("r2") = (unsigned long) filename; 42 register unsigned long __sc3 __asm__ ("r3") = (unsigned long) argv; 43 register unsigned long __sc4 __asm__ ("r4") = (unsigned long) envp; 44 __asm__ __volatile__ ("trapa %1 !\t\t\t execve(%2,%3,%4)" 45 : "=r" (__sc0) 46 : "r" (__sc0), "r" (__sc2), "r" (__sc3), "r" (__sc4) ); 47 __asm__ __volatile__ ("!dummy %0 %1 %2 %3" 48 : : "r" (__sc0), "r" (__sc2), "r" (__sc3), "r" (__sc4) : "memory"); 49 return __sc0; 50} 51