/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2013 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* 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.
+ * 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.
+ *
+ * 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
* 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@
/*
* Global descriptor table.
*/
-#include <i386/thread.h>
#include <i386/seg.h>
-#include <mach/i386/vm_param.h>
-#include <kern/thread.h>
-#include <mach_kdb.h>
-
-#ifdef MACH_BSD
-extern int trap_unix_syscall(void), trap_mach25_syscall(void),
- trap_machdep_syscall(void), syscall(void);
-#endif
-struct fake_descriptor gdt[GDTSZ] = {
-/* 0x000 */ { 0, 0, 0, 0 }, /* always NULL */
-/* 0x008 */ { LINEAR_KERNEL_ADDRESS + VM_MIN_ADDRESS,
- (VM_MAX_KERNEL_ADDRESS-1-VM_MIN_KERNEL_ADDRESS)>>12,
- SZ_32|SZ_G,
- ACC_P|ACC_PL_K|ACC_CODE_R
- }, /* kernel code */
-/* 0x010 */ { LINEAR_KERNEL_ADDRESS + VM_MIN_ADDRESS,
- (VM_MAX_KERNEL_ADDRESS-1-VM_MIN_KERNEL_ADDRESS)>>12,
- SZ_32|SZ_G,
- ACC_P|ACC_PL_K|ACC_DATA_W
- }, /* kernel data */
-/* 0x018 */ { LINEAR_KERNEL_ADDRESS + (unsigned int)ldt,
- LDTSZ*sizeof(struct fake_descriptor)-1,
- 0,
- ACC_P|ACC_PL_K|ACC_LDT
- }, /* local descriptor table */
-/* 0x020 */ { LINEAR_KERNEL_ADDRESS + (unsigned int)&ktss,
- sizeof(struct i386_tss)-1,
- 0,
- ACC_P|ACC_PL_K|ACC_TSS
- }, /* TSS for this processor */
-#ifdef MACH_BSD
-/* 0x28 */ { (unsigned int) &trap_unix_syscall,
- KERNEL_CS,
- 0, /* no parameters */
- ACC_P|ACC_PL_U|ACC_CALL_GATE
- },
-/* 0x30 */ { (unsigned int) &trap_mach25_syscall,
- KERNEL_CS,
- 0, /* no parameters */
- ACC_P|ACC_PL_U|ACC_CALL_GATE
- },
-/* 0x38 */ { (unsigned int) &trap_machdep_syscall,
- KERNEL_CS,
- 0, /* no parameters */
- ACC_P|ACC_PL_U|ACC_CALL_GATE
- },
-#else
-/* 0x028 */ { 0, 0, 0, 0 }, /* per-thread LDT */
-/* 0x030 */ { 0, 0, 0, 0 }, /* per-thread TSS for IO bitmap */
-/* 0x038 */ { 0, 0, 0, 0 },
-#endif
-/* 0x040 */ { 0, 0, 0, 0 },
-/* 0x048 */ { LINEAR_KERNEL_ADDRESS + (unsigned int)&cpu_data[0],
- sizeof(cpu_data)-1,
- SZ_32,
- ACC_P|ACC_PL_K|ACC_DATA_W
- }, /* per-CPU current thread address */
-#if MACH_KDB
-/* 0x050 */ { LINEAR_KERNEL_ADDRESS + (unsigned int)&dbtss,
- sizeof(struct i386_tss)-1,
- 0,
- ACC_P|ACC_PL_K|ACC_TSS
- } /* TSS for this processor */
-#endif /* MACH_KDB */
+struct real_descriptor master_gdt[GDTSZ]
+ __attribute__((section("__HIB,__desc")))
+ __attribute__((aligned(PAGE_SIZE))) = {
+ [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)] = MAKE_REAL_DESCRIPTOR( /* kernel data */
+ 0,
+ 0xfffff,
+ SZ_32|SZ_G,
+ ACC_P|ACC_PL_K|ACC_DATA_W
+ ),
+ [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)] = MAKE_REAL_DESCRIPTOR( /* kernel 64-bit syscall stack */
+ 0,
+ 0xfffff,
+ SZ_32|SZ_G,
+ ACC_P|ACC_PL_K|ACC_DATA_W
+ ),
+ [SEL_TO_INDEX(USER_CS)] = MAKE_REAL_DESCRIPTOR( /* 32-bit user code segment */
+ 0,
+ 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
+ ),
};
projects / apple / xnu.git / blobdiff