X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/0c530ab8987f0ae6a1a3d9284f40182b88852816..e2d2fc5c71f7d145cba7267989251af45e3bb5ba:/osfmk/i386/gdt.c

diff --git a/osfmk/i386/gdt.c b/osfmk/i386/gdt.c
index 500c34495..7677f2488 100644
--- a/osfmk/i386/gdt.c
+++ b/osfmk/i386/gdt.c
@@ -1,23 +1,29 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2009 Apple 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@
@@ -54,67 +60,51 @@
 /*
  * Global descriptor table.
  */
-#include <mach/machine.h>
-#include <mach/i386/vm_param.h>
-#include <kern/thread.h>
-#include <i386/cpu_data.h>
-#include <i386/mp_desc.h>
+#include <i386/seg.h>
 
-struct fake_descriptor master_gdt[GDTSZ] __attribute__ ((aligned (4096))) = {
-	[SEL_TO_INDEX(KERNEL_CS)] {	/* kernel code */
+struct real_descriptor master_gdt[GDTSZ] __attribute__ ((section("__INITGDT,__data")))= {
+	[SEL_TO_INDEX(KERNEL32_CS)] = MAKE_REAL_DESCRIPTOR(	/* kernel 32-bit code */ 
 		0,
 		0xfffff,
 		SZ_32|SZ_G,
-		ACC_P|ACC_PL_K|ACC_CODE_R,
-	},
-	[SEL_TO_INDEX(KERNEL_DS)] {	/* kernel data */
+		ACC_P|ACC_PL_K|ACC_CODE_R
+	),
+	[SEL_TO_INDEX(KERNEL_DS)] = MAKE_REAL_DESCRIPTOR(	/* kernel data */
 		0,
 		0xfffff,
 		SZ_32|SZ_G,
 		ACC_P|ACC_PL_K|ACC_DATA_W
-	},
-	[SEL_TO_INDEX(KERNEL_LDT)] {	/* local descriptor table */
-		(uint32_t) &master_ldt,
-		LDTSZ_MIN*sizeof(struct fake_descriptor)-1,
-		0,
-		ACC_P|ACC_PL_K|ACC_LDT
-	},				/* The slot KERNEL_LDT_2 is reserved. */
-	[SEL_TO_INDEX(KERNEL_TSS)] {	/* TSS for this processor */
-		(uint32_t) &master_ktss,
-		sizeof(struct i386_tss)-1,
-		0,
-		ACC_P|ACC_PL_K|ACC_TSS
-	},				/* The slot KERNEL_TSS_2 is reserved. */
-	[SEL_TO_INDEX(CPU_DATA_GS)] {	/* per-CPU current thread address */
-		(uint32_t) &cpu_data_master,
-		sizeof(cpu_data_t)-1,
-		SZ_32,
-		ACC_P|ACC_PL_K|ACC_DATA_W
-	},
-	[SEL_TO_INDEX(USER_LDT)] {	/* user local descriptor table */
-		(uint32_t) &master_ldt,
-		LDTSZ_MIN*sizeof(struct fake_descriptor)-1,
-		0,
-		ACC_P|ACC_PL_K|ACC_LDT
-	},
-	[SEL_TO_INDEX(KERNEL64_CS)] {	/* kernel 64-bit code */ 
+	),
+	[SEL_TO_INDEX(KERNEL64_CS)] = MAKE_REAL_DESCRIPTOR(	/* kernel 64-bit code */ 
 		0,
 		0xfffff,
 		SZ_64|SZ_G,
 		ACC_P|ACC_PL_K|ACC_CODE_R
-	},
-	[SEL_TO_INDEX(KERNEL64_SS)] {	/* kernel 64-bit syscall stack */ 
+	),
+	[SEL_TO_INDEX(KERNEL64_SS)] = MAKE_REAL_DESCRIPTOR(	/* kernel 64-bit syscall stack */ 
 		0,
 		0xfffff,
 		SZ_32|SZ_G,
 		ACC_P|ACC_PL_K|ACC_DATA_W
-	},
-#if	MACH_KDB
-	[SEL_TO_INDEX(DEBUG_TSS)] {	/* TSS for this processor */
-		(uint32_t)&master_dbtss,
-		sizeof(struct i386_tss)-1,
+	),
+#ifdef __x86_64__
+	[SEL_TO_INDEX(USER_CS)] = MAKE_REAL_DESCRIPTOR(	/* 32-bit user code segment */
 		0,
-		ACC_P|ACC_PL_K|ACC_TSS
-	},
-#endif	/* MACH_KDB */
+		0xfffff,
+ 		SZ_32|SZ_G,
+		ACC_P|ACC_PL_U|ACC_CODE_R
+	),
+	[SEL_TO_INDEX(USER_DS)] = MAKE_REAL_DESCRIPTOR(	/* 32-bit user data segment */
+		0,
+		0xfffff,
+		SZ_32|SZ_G,
+		ACC_P|ACC_PL_U|ACC_DATA_W
+	),
+	[SEL_TO_INDEX(USER64_CS)] = MAKE_REAL_DESCRIPTOR(	/* user 64-bit code segment */
+		0,
+		0xfffff,
+		SZ_64|SZ_G,
+		ACC_P|ACC_PL_U|ACC_CODE_R
+	),
+#endif
 };