dmaengine: driver for the iop32x, iop33x, and iop13xx raid engines
[pv_ops_mirror.git] / arch / avr32 / kernel / sys_avr32.c
blob8deb6003ee626afb44c14f785c25eea3b239c9f2
1 /*
2 * Copyright (C) 2004-2006 Atmel Corporation
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/errno.h>
9 #include <linux/fs.h>
10 #include <linux/file.h>
11 #include <linux/mm.h>
12 #include <linux/unistd.h>
14 #include <asm/mman.h>
15 #include <asm/uaccess.h>
17 asmlinkage int sys_pipe(unsigned long __user *filedes)
19 int fd[2];
20 int error;
22 error = do_pipe(fd);
23 if (!error) {
24 if (copy_to_user(filedes, fd, sizeof(fd)))
25 error = -EFAULT;
27 return error;
30 asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
31 unsigned long prot, unsigned long flags,
32 unsigned long fd, off_t offset)
34 int error = -EBADF;
35 struct file *file = NULL;
37 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
38 if (!(flags & MAP_ANONYMOUS)) {
39 file = fget(fd);
40 if (!file)
41 return error;
44 down_write(&current->mm->mmap_sem);
45 error = do_mmap_pgoff(file, addr, len, prot, flags, offset);
46 up_write(&current->mm->mmap_sem);
48 if (file)
49 fput(file);
50 return error;
53 int kernel_execve(const char *file, char **argv, char **envp)
55 register long scno asm("r8") = __NR_execve;
56 register long sc1 asm("r12") = (long)file;
57 register long sc2 asm("r11") = (long)argv;
58 register long sc3 asm("r10") = (long)envp;
60 asm volatile("scall"
61 : "=r"(sc1)
62 : "r"(scno), "0"(sc1), "r"(sc2), "r"(sc3)
63 : "cc", "memory");
64 return sc1;