x86: unify and correct the GDT_ENTRY() macro

[linux-2.6-omap-h63xx.git] / include / asm-x86 / segment.h

diff --git a/include/asm-x86/segment.h b/include/asm-x86/segment.h
index dfc8601c08922f26e6b19a4a28d998a0b1a7c274..646452ea9ea3ede3d7847f5be78c8ca5a0feee48 100644 (file)
--- a/include/asm-x86/segment.h
+++ b/include/asm-x86/segment.h
@@ -1,6 +1,15 @@
 #ifndef _ASM_X86_SEGMENT_H_
 #define _ASM_X86_SEGMENT_H_
 
+/* Constructor for a conventional segment GDT (or LDT) entry */
+/* This is a macro so it can be used in initializers */
+#define GDT_ENTRY(flags, base, limit)                  \
+       ((((base)  & 0xff000000ULL) << (56-24)) |       \
+        (((flags) & 0x0000f0ffULL) << 40) |            \
+        (((limit) & 0x000f0000ULL) << (48-16)) |       \
+        (((base)  & 0x00ffffffULL) << 16) |            \
+        (((limit) & 0x0000ffffULL)))
+
 /* Simple and small GDT entries for booting only */
 
 #define GDT_ENTRY_BOOT_CS      2