| David Howells | b920de1 | 2008-02-08 04:19:31 -0800 | [diff] [blame] | 1 | /* MN10300 In-kernel program execution |
| 2 | * |
| 3 | * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. |
| 4 | * Written by David Howells (dhowells@redhat.com) |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public Licence |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the Licence, or (at your option) any later version. |
| 10 | */ |
| 11 | #include <linux/linkage.h> |
| 12 | #include <asm/unistd.h> |
| 13 | |
| 14 | ############################################################################### |
| 15 | # |
| 16 | # Do a system call from kernel instead of calling sys_execve so we end up with |
| 17 | # proper pt_regs. |
| 18 | # |
| 19 | # int kernel_execve(const char *filename, char *const argv[], |
| 20 | # char *const envp[]) |
| 21 | # |
| 22 | # On entry: D0/D1/8(SP): arguments to function |
| 23 | # On return: D0: syscall return. |
| 24 | # |
| 25 | ############################################################################### |
| 26 | .globl kernel_execve |
| 27 | .type kernel_execve,@function |
| 28 | kernel_execve: |
| 29 | mov a3,a1 |
| 30 | mov d0,a0 |
| 31 | mov (12,sp),a3 |
| 32 | mov +__NR_execve,d0 |
| 33 | syscall 0 |
| 34 | mov a1,a3 |
| 35 | rets |
| 36 | |
| 37 | .size kernel_execve,.-kernel_execve |