X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/21362eb3e66fd2c787aee132bce100a44d71a99c..d9a64523371fa019c4575bb400cbbc3a50ac9903:/osfmk/i386/user_ldt.h

diff --git a/osfmk/i386/user_ldt.h b/osfmk/i386/user_ldt.h
index 4295d939e..8285cb4df 100644
--- a/osfmk/i386/user_ldt.h
+++ b/osfmk/i386/user_ldt.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2008 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -63,29 +63,36 @@
 /*
  * User LDT management.
  *
- * Each thread in a task may have its own LDT.
+ * Each task may have its own LDT.
  */
 
+#define	LDT_AUTO_ALLOC	0xffffffff
+
+#ifdef KERNEL
 #include <i386/seg.h>
 
 struct user_ldt {
-	struct real_descriptor	desc;	/* descriptor for self */
-	struct real_descriptor	ldt[1];	/* descriptor table (variable) */
+	unsigned int start;		/* first descriptor in table */
+	unsigned int count;		/* how many descriptors in table */
+	struct real_descriptor	ldt[0];	/* descriptor table (variable) */
 };
 typedef struct user_ldt *	user_ldt_t;
 
-/*
- * Check code/stack/data selector values against LDT if present.
- */
-#define	S_CODE	0		/* code segment */
-#define	S_STACK	1		/* stack segment */
-#define	S_DATA	2		/* data segment */
-
-extern boolean_t selector_check(
-			thread_t	thread,
-			int		sel,
-			int		type);
+extern user_ldt_t	user_ldt_copy(
+			user_ldt_t	uldt);
 extern void	user_ldt_free(
 			user_ldt_t	uldt);
+extern void	user_ldt_set(
+			thread_t	thread);
+#else /* !KERNEL */
+#include <sys/cdefs.h>
+
+union ldt_entry;
+
+__BEGIN_DECLS
+int i386_get_ldt(int, union ldt_entry *, int);
+int i386_set_ldt(int, const union ldt_entry *, int);
+__END_DECLS
+#endif /* KERNEL */
 
 #endif	/* _I386_USER_LDT_H_ */