blob: 91fb8445a5a094ac8c5f2191b9bca308b5e1b8e4 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Paul Mundtbcb28e42007-11-20 15:50:59 +09002 * arch/sh/kernel/sys_sh64.c
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 *
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 *
Paul Mundtbcb28e42007-11-20 15:50:59 +090010 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070014#include <linux/errno.h>
15#include <linux/rwsem.h>
16#include <linux/sched.h>
17#include <linux/mm.h>
Paul Mundt78d98272007-07-31 13:03:02 +090018#include <linux/fs.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070019#include <linux/smp.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#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/utsname.h>
27#include <linux/syscalls.h>
Adrian Bunkcba4fbb2007-10-16 23:29:24 -070028#include <linux/ipc.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include <asm/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#include <asm/ptrace.h>
Arnd Bergmannfe742902006-10-02 02:18:34 -070031#include <asm/unistd.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070032
Linus Torvalds1da177e2005-04-16 15:20:36 -070033/*
Arnd Bergmannfe742902006-10-02 02:18:34 -070034 * Do a system call from kernel instead of calling sys_execve so we
35 * end up with proper pt_regs.
36 */
37int kernel_execve(const char *filename, char *const argv[], char *const envp[])
38{
39 register unsigned long __sc0 __asm__ ("r9") = ((0x13 << 16) | __NR_execve);
40 register unsigned long __sc2 __asm__ ("r2") = (unsigned long) filename;
41 register unsigned long __sc3 __asm__ ("r3") = (unsigned long) argv;
42 register unsigned long __sc4 __asm__ ("r4") = (unsigned long) envp;
43 __asm__ __volatile__ ("trapa %1 !\t\t\t execve(%2,%3,%4)"
44 : "=r" (__sc0)
45 : "r" (__sc0), "r" (__sc2), "r" (__sc3), "r" (__sc4) );
46 __asm__ __volatile__ ("!dummy %0 %1 %2 %3"
47 : : "r" (__sc0), "r" (__sc2), "r" (__sc3), "r" (__sc4) : "memory");
48 return __sc0;
49}