Initial file dump from open source releaseHEADmaster

1 files changed, 44 insertions, 0 deletions

diff --git a/arch/frv/kernel/sys_frv.c b/arch/frv/kernel/sys_frv.c
new file mode 100644
index 00000000..9c498082
--- /dev/null
+++ b/arch/frv/kernel/sys_frv.c
@@ -0,0 +1,44 @@
+/* sys_frv.c: FRV arch-specific syscall wrappers
+ *
+ * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ * - Derived from arch/m68k/kernel/sys_m68k.c
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/fs.h>
+#include <linux/smp.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/shm.h>
+#include <linux/stat.h>
+#include <linux/mman.h>
+#include <linux/file.h>
+#include <linux/syscalls.h>
+#include <linux/ipc.h>
+
+#include <asm/setup.h>
+#include <asm/uaccess.h>
+
+asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
+			  unsigned long prot, unsigned long flags,
+			  unsigned long fd, unsigned long pgoff)
+{
+	/* As with sparc32, make sure the shift for mmap2 is constant
+	   (12), no matter what PAGE_SIZE we have.... */
+
+	/* But unlike sparc32, don't just silently break if we're
+	   trying to map something we can't */
+	if (pgoff & ((1 << (PAGE_SHIFT - 12)) - 1))
+		return -EINVAL;
+
+	return sys_mmap_pgoff(addr, len, prot, flags, fd,
+			      pgoff >> (PAGE_SHIFT - 12));
+}