m68k: merge the mmu and non-mmu versions of segment.h

Trivial merge of the mmu and non-mmu version of segment.h.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>

1 files changed, 61 insertions, 3 deletions

diff --git a/arch/m68k/include/asm/segment.h b/arch/m68k/include/asm/segment.h
index 82583bc004b..ee959219fdf 100644
--- a/arch/m68k/include/asm/segment.h
+++ b/arch/m68k/include/asm/segment.h
@@ -1,5 +1,63 @@
-#ifdef __uClinux__
-#include "segment_no.h"
+#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)
+{
+#ifdef CONFIG_MMU
+	mm_segment_t _v;
+	__asm__ ("movec %/dfc,%0":"=r" (_v.seg):);
+
+	return _v;
 #else
-#include "segment_mm.h"
+	return USER_DS;
+#endif
+}
+
+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)
+{
+#ifdef CONFIG_MMU
+	__asm__ __volatile__ ("movec %0,%/sfc\n\t"
+			      "movec %0,%/dfc\n\t"
+			      : /* no outputs */ : "r" (val.seg) : "memory");
 #endif
+}
+
+#define segment_eq(a,b)	((a).seg == (b).seg)
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _M68K_SEGMENT_H */