This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / arch / avr32 / kernel / sys_avr32.c

diff --git a/arch/avr32/kernel/sys_avr32.c b/arch/avr32/kernel/sys_avr32.c
new file mode 100644 (file)
index 0000000..8deb600
--- /dev/null
+++ b/arch/avr32/kernel/sys_avr32.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/file.h>
+#include <linux/mm.h>
+#include <linux/unistd.h>
+
+#include <asm/mman.h>
+#include <asm/uaccess.h>
+
+asmlinkage int sys_pipe(unsigned long __user *filedes)
+{
+       int fd[2];
+       int error;
+
+       error = do_pipe(fd);
+       if (!error) {
+               if (copy_to_user(filedes, fd, sizeof(fd)))
+                       error = -EFAULT;
+       }
+       return error;
+}
+
+asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
+                         unsigned long prot, unsigned long flags,
+                         unsigned long fd, off_t offset)
+{
+       int error = -EBADF;
+       struct file *file = NULL;
+
+       flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+       if (!(flags & MAP_ANONYMOUS)) {
+               file = fget(fd);
+               if (!file)
+                       return error;
+       }
+
+       down_write(&current->mm->mmap_sem);
+       error = do_mmap_pgoff(file, addr, len, prot, flags, offset);
+       up_write(&current->mm->mmap_sem);
+
+       if (file)
+               fput(file);
+       return error;
+}
+
+int kernel_execve(const char *file, char **argv, char **envp)
+{
+       register long scno asm("r8") = __NR_execve;
+       register long sc1 asm("r12") = (long)file;
+       register long sc2 asm("r11") = (long)argv;
+       register long sc3 asm("r10") = (long)envp;
+
+       asm volatile("scall"
+                    : "=r"(sc1)
+                    : "r"(scno), "0"(sc1), "r"(sc2), "r"(sc3)
+                    : "cc", "memory");
+       return sc1;
+}