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authorThomas Gleixner <tglx@linutronix.de>2007-10-17 18:04:40 +0200
committerThomas Gleixner <tglx@inhelltoy.tec.linutronix.de>2007-10-17 20:16:47 +0200
commitf6a2e7f2012eeced1dbf093bb98a1c38fee91f78 (patch)
treefab3e6186fa8a0ccde831d34e504e70f7d497361 /include/asm-x86/ldt.h
parent686d8c63d530a5cfdbab2523825e37b904be56f9 (diff)
x86: unify include/asm/ldt_32/64.h
The additional struct member of user_desc can be made conditional for 64 bit compiles. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/ldt.h')
-rw-r--r--include/asm-x86/ldt.h51
1 files changed, 39 insertions, 12 deletions
diff --git a/include/asm-x86/ldt.h b/include/asm-x86/ldt.h
index 3d9cc20d2ba..20c597242b5 100644
--- a/include/asm-x86/ldt.h
+++ b/include/asm-x86/ldt.h
@@ -1,13 +1,40 @@
-#ifdef __KERNEL__
-# ifdef CONFIG_X86_32
-# include "ldt_32.h"
-# else
-# include "ldt_64.h"
-# endif
-#else
-# ifdef __i386__
-# include "ldt_32.h"
-# else
-# include "ldt_64.h"
-# endif
+/*
+ * ldt.h
+ *
+ * Definitions of structures used with the modify_ldt system call.
+ */
+#ifndef _ASM_X86_LDT_H
+#define _ASM_X86_LDT_H
+
+/* Maximum number of LDT entries supported. */
+#define LDT_ENTRIES 8192
+/* The size of each LDT entry. */
+#define LDT_ENTRY_SIZE 8
+
+#ifndef __ASSEMBLY__
+/*
+ * Note on 64bit base and limit is ignored and you cannot set DS/ES/CS
+ * not to the default values if you still want to do syscalls. This
+ * call is more for 32bit mode therefore.
+ */
+struct user_desc {
+ unsigned int entry_number;
+ unsigned int base_addr;
+ unsigned int limit;
+ unsigned int seg_32bit:1;
+ unsigned int contents:2;
+ unsigned int read_exec_only:1;
+ unsigned int limit_in_pages:1;
+ unsigned int seg_not_present:1;
+ unsigned int useable:1;
+#ifdef __x86_64__
+ unsigned int lm:1;
+#endif
+};
+
+#define MODIFY_LDT_CONTENTS_DATA 0
+#define MODIFY_LDT_CONTENTS_STACK 1
+#define MODIFY_LDT_CONTENTS_CODE 2
+
+#endif /* !__ASSEMBLY__ */
#endif