xnu-1228.5.18.tar.gz

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

diff --git a/osfmk/i386/ldt.c b/osfmk/i386/ldt.c
index 461acfce25a0ceba0fce362a79807b3a027bcd51..428bf92263eb37013b510d5cdea810461151100e 100644 (file)
--- a/osfmk/i386/ldt.c
+++ b/osfmk/i386/ldt.c
@@ -1,23 +1,29 @@
 /*
  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
- * 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. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * 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.
  * 
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /*
  * @OSF_COPYRIGHT@
@@ -55,36 +61,46 @@
  * same LDT.
  */
 #include <i386/seg.h>
+#include <i386/pmap.h>
 #include <mach/i386/vm_types.h>
 #include <mach/i386/vm_param.h>
 
-extern int     syscall(void);
-extern int     mach_rpc(void);
 
-struct fake_descriptor ldt[LDTSZ] = {
-/*007*/        { (unsigned int)&syscall,
-         KERNEL_CS,
-         0,                            /* no parameters */
-         ACC_P|ACC_PL_U|ACC_CALL_GATE
-       },                              /* call gate for system calls */
-/*00F*/        { (unsigned int)&mach_rpc,
-          KERNEL_CS,
-          0,                            /* no parameters */
-          ACC_P|ACC_PL_U|ACC_CALL_GATE
-        },                             /* call gate for mach rpc */
-/*017*/        { 0,
-         (VM_MAX_ADDRESS-VM_MIN_ADDRESS-1)>>12,
+struct fake_descriptor master_ldt[LDTSZ] __attribute__ ((aligned (4096))) = {
+       [SEL_TO_INDEX(SYSENTER_CS)] {   /* kernel code (sysenter) */
+               0,
+         0xfffff,
+         SZ_32|SZ_G,
+         ACC_P|ACC_PL_K|ACC_CODE_R
+       },
+       [SEL_TO_INDEX(SYSENTER_DS)] {   /* kernel data (sysenter) */
+               0,
+         0xfffff,
          SZ_32|SZ_G,
+         ACC_P|ACC_PL_K|ACC_DATA_W
+       },
+       [SEL_TO_INDEX(USER_CS)] {       /* user code segment */
+               0,
+         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,
+       },
+       [SEL_TO_INDEX(USER_DS)] {       /* user data segment */
+               0,
+         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,
+       },
+       [SEL_TO_INDEX(USER64_CS)] {     /* user 64-bit code segment */
+               0,
+               0xfffff,
+               SZ_64|SZ_G,
+               ACC_P|ACC_PL_U|ACC_CODE_R
+       },
+       [SEL_TO_INDEX(USER_CTHREAD)] {  /* user cthread segment */
+               0,
+         0xfffff,
          SZ_32|SZ_G,
          ACC_P|ACC_PL_U|ACC_DATA_W
-       },                              /* user cthread segment */
+       },
 };