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authorDavid Howells <dhowells@redhat.com>2009-04-10 01:48:06 +0100
committerDavid Howells <dhowells@redhat.com>2009-04-10 01:48:06 +0100
commite69cc9278831139660cb99bde52908f145338d77 (patch)
treefdc1f002b6036a2220d73c86a253886fa76015dc /arch/frv/include/asm/segment.h
parent187934655fa0637d4ef3967d4543c6dcccf33058 (diff)
FRV: Move to arch/frv/include/asm/
Move arch headers from include/asm-frv/ to arch/frv/include/asm/. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'arch/frv/include/asm/segment.h')
-rw-r--r--arch/frv/include/asm/segment.h45
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/frv/include/asm/segment.h b/arch/frv/include/asm/segment.h
new file mode 100644
index 00000000000..e3616a6f941
--- /dev/null
+++ b/arch/frv/include/asm/segment.h
@@ -0,0 +1,45 @@
+/* segment.h: MMU segment settings
+ *
+ * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * 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.
+ */
+
+#ifndef _ASM_SEGMENT_H
+#define _ASM_SEGMENT_H
+
+
+#ifndef __ASSEMBLY__
+
+typedef struct {
+ unsigned long seg;
+} mm_segment_t;
+
+#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
+
+#define KERNEL_DS MAKE_MM_SEG(0xdfffffffUL)
+
+#ifdef CONFIG_MMU
+#define USER_DS MAKE_MM_SEG(TASK_SIZE - 1)
+#else
+#define USER_DS KERNEL_DS
+#endif
+
+#define get_ds() (KERNEL_DS)
+#define get_fs() (__current_thread_info->addr_limit)
+#define segment_eq(a,b) ((a).seg == (b).seg)
+#define __kernel_ds_p() segment_eq(get_fs(), KERNEL_DS)
+#define get_addr_limit() (get_fs().seg)
+
+#define set_fs(_x) \
+do { \
+ __current_thread_info->addr_limit = (_x); \
+} while(0)
+
+
+#endif /* __ASSEMBLY__ */
+#endif /* _ASM_SEGMENT_H */