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-rw-r--r--include/asm-m68knommu/segment.h51
1 files changed, 51 insertions, 0 deletions
diff --git a/include/asm-m68knommu/segment.h b/include/asm-m68knommu/segment.h
new file mode 100644
index 0000000..42318eb
--- /dev/null
+++ b/include/asm-m68knommu/segment.h
@@ -0,0 +1,51 @@
+#ifndef _M68K_SEGMENT_H
+#define _M68K_SEGMENT_H
+
+/* define constants */
+/* Address spaces (FC0-FC2) */
+#define USER_DATA (1)
+#ifndef __USER_DS
+#define __USER_DS (USER_DATA)
+#endif
+#define USER_PROGRAM (2)
+#define SUPER_DATA (5)
+#ifndef __KERNEL_DS
+#define __KERNEL_DS (SUPER_DATA)
+#endif
+#define SUPER_PROGRAM (6)
+#define CPU_SPACE (7)
+
+#ifndef __ASSEMBLY__
+
+typedef struct {
+ unsigned long seg;
+} mm_segment_t;
+
+#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
+#define USER_DS MAKE_MM_SEG(__USER_DS)
+#define KERNEL_DS MAKE_MM_SEG(__KERNEL_DS)
+
+/*
+ * Get/set the SFC/DFC registers for MOVES instructions
+ */
+
+static inline mm_segment_t get_fs(void)
+{
+ return USER_DS;
+}
+
+static inline mm_segment_t get_ds(void)
+{
+ /* return the supervisor data space code */
+ return KERNEL_DS;
+}
+
+static inline void set_fs(mm_segment_t val)
+{
+}
+
+#define segment_eq(a,b) ((a).seg == (b).seg)
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _M68K_SEGMENT_H */
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