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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-frv/segment.h
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-frv/segment.h')
-rw-r--r--include/asm-frv/segment.h46
1 files changed, 46 insertions, 0 deletions
diff --git a/include/asm-frv/segment.h b/include/asm-frv/segment.h
new file mode 100644
index 000000000000..61222f00dfc1
--- /dev/null
+++ b/include/asm-frv/segment.h
@@ -0,0 +1,46 @@
+/* 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
+
+#include <linux/config.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 */