From 4fdf08b5bf8d449cc9897395895157c6ff8ddc41 Mon Sep 17 00:00:00 2001 From: "H. Peter Anvin" Date: Thu, 17 Jul 2008 11:29:24 -0700 Subject: x86: unify and correct the GDT_ENTRY() macro Merge the GDT_ENTRY() macro between arch/x86/boot/pm.c and arch/x86/kernel/acpi/sleep.c and put the new one in . While we're at it, correct the bitmasks for the limit and flags. The new version relies on using ULL constants in order to cause type promotion rather than explicit casts; this avoids having to include in . Signed-off-by: H. Peter Anvin --- include/asm-x86/segment.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include/asm-x86/segment.h') diff --git a/include/asm-x86/segment.h b/include/asm-x86/segment.h index dfc8601c089..646452ea9ea 100644 --- 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 -- cgit v1.2.3