X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Favr32%2Fkernel%2Fsys_avr32.c;fp=arch%2Favr32%2Fkernel%2Fsys_avr32.c;h=8deb6003ee626afb44c14f785c25eea3b239c9f2;hb=76828883507a47dae78837ab5dec5a5b4513c667;hp=0000000000000000000000000000000000000000;hpb=64ba3f394c830ec48a1c31b53dcae312c56f1604;p=linux-2.6.git

diff --git a/arch/avr32/kernel/sys_avr32.c b/arch/avr32/kernel/sys_avr32.c
new file mode 100644
index 000000000..8deb6003e
--- /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;
+}