xnu-792.24.17.tar.gz

[apple/xnu.git] / osfmk / i386 / ldt.c

diff --git a/osfmk/i386/ldt.c b/osfmk/i386/ldt.c
index aa462b0c08d8a2f44006c75c169e40a0269b6727..6c5f9840a612de3d7a10c2cb1125e3a89f362384 100644 (file)
--- a/osfmk/i386/ldt.c
+++ b/osfmk/i386/ldt.c
@@ -3,22 +3,19 @@
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License").  You may not use this file except in compliance with the
+ * License.  Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
  * 
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- * 
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
  * 
  * @APPLE_LICENSE_HEADER_END@
  */
@@ -58,6 +55,7 @@
  * same LDT.
  */
 #include <i386/seg.h>
+#include <i386/pmap.h>
 #include <mach/i386/vm_types.h>
 #include <mach/i386/vm_param.h>
 
@@ -76,18 +74,31 @@ struct fake_descriptor      ldt[LDTSZ] = {
           ACC_P|ACC_PL_U|ACC_CALL_GATE
         },                             /* call gate for mach rpc */
 /*017*/        { 0,
-         (VM_MAX_ADDRESS-VM_MIN_ADDRESS-1)>>12,
-         SZ_32|SZ_G,
+         0xfffff,
+         SZ_32|SZ_G,
          ACC_P|ACC_PL_U|ACC_CODE_R
        },                              /* user code segment */
 /*01F*/        { 0,
-         (VM_MAX_ADDRESS-VM_MIN_ADDRESS-1)>>12,
+         0xfffff,
          SZ_32|SZ_G,
          ACC_P|ACC_PL_U|ACC_DATA_W
        },                              /* user data segment */
 /*027*/        { 0,
-         (VM_MAX_ADDRESS-VM_MIN_ADDRESS-1)>>12,
+         0xfffff,
          SZ_32|SZ_G,
          ACC_P|ACC_PL_U|ACC_DATA_W
        },                              /* user cthread segment */
+// Storage space for user ldt entries we will make room for 10 entries initially
+// as we will probably never need many more than that
+/*02F*/        { 0, 0, 0, 0},
+/*037*/        { 0, 0, 0, 0},
+/*03F*/        { 0, 0, 0, 0},
+/*047*/        { 0, 0, 0, 0},
+/*04F*/        { 0, 0, 0, 0},
+/*057*/        { 0, 0, 0, 0},
+/*05F*/        { 0, 0, 0, 0},
+/*067*/        { 0, 0, 0, 0},
+/*06F*/        { 0, 0, 0, 0},
+/*077*/        { 0, 0, 0, 0},
+
 };