linux-sg2042/arch/mn10300/kernel/kernel_execve.S

38 lines
1.1 KiB
ArmAsm

/* MN10300 In-kernel program execution
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#include <linux/linkage.h>
#include <asm/unistd.h>
###############################################################################
#
# Do a system call from kernel instead of calling sys_execve so we end up with
# proper pt_regs.
#
# int kernel_execve(const char *filename, char *const argv[],
# char *const envp[])
#
# On entry: D0/D1/8(SP): arguments to function
# On return: D0: syscall return.
#
###############################################################################
.globl kernel_execve
.type kernel_execve,@function
kernel_execve:
mov a3,a1
mov d0,a0
mov (12,sp),a3
mov +__NR_execve,d0
syscall 0
mov a1,a3
rets
.size kernel_execve,.-kernel_execve