/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2013 Apple 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
* 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
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* 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_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
*/
/* CMU_ENDHIST */
-/*
+/*
* Mach Operating System
* Copyright (c) 1991,1990 Carnegie Mellon University
* All Rights Reserved.
- *
+ *
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
- *
+ *
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
+ *
* Carnegie Mellon requests users of this software to return to
- *
+ *
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
- *
+ *
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* 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>
-
-#ifdef MACH_BSD
-extern int trap_unix_syscall(void), trap_mach25_syscall(void),
- trap_machdep_syscall(void), syscall(void);
-#endif
+#include <i386/seg.h>
-struct fake_descriptor gdt[GDTSZ] = {
-/* 0x000 */ { 0, 0, 0, 0 }, /* always NULL */
-/* 0x008 */ { 0,
- 0xfffff,
- SZ_32|SZ_G,
- ACC_P|ACC_PL_K|ACC_CODE_R
- }, /* kernel code */
-/* 0x010 */ { 0,
- 0xfffff,
- SZ_32|SZ_G,
- ACC_P|ACC_PL_K|ACC_DATA_W
- }, /* kernel data */
-/* 0x018 */ { (unsigned int)ldt,
- LDTSZ*sizeof(struct fake_descriptor)-1,
- 0,
- ACC_P|ACC_PL_K|ACC_LDT
- }, /* local descriptor table */
-/* 0x020 */ { (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 */ { (unsigned int)&cpu_data_master,
- sizeof(cpu_data_t)-1,
- SZ_32,
- ACC_P|ACC_PL_K|ACC_DATA_W
- }, /* per-CPU current thread address */
-#if MACH_KDB
-/* 0x050 */ { (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