X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/4452a7af2eac33dbad800bcc91f2399d62c18f53..ea3f04195ba4a5034c9c8e9b726d4f7ce96f1832:/osfmk/i386/ktss.c diff --git a/osfmk/i386/ktss.c b/osfmk/i386/ktss.c index a947de6e6..0507cb791 100644 --- a/osfmk/i386/ktss.c +++ b/osfmk/i386/ktss.c @@ -1,8 +1,8 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2012 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 @@ -11,10 +11,10 @@ * 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, @@ -22,34 +22,34 @@ * 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@ */ -/* +/* * 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. */ @@ -61,45 +61,10 @@ * * We don't use the i386 task switch mechanism. We need a TSS * only to hold the kernel stack pointer for the current thread. - * */ #include -#include -#include +#include -struct i386_tss master_ktss - __attribute__ ((section ("__DESC, master_ktss"))) - __attribute__ ((aligned (4096))) = { - 0, /* back link */ - 0, /* esp0 */ - KERNEL_DS, /* ss0 */ - 0, /* esp1 */ - 0, /* ss1 */ - 0, /* esp2 */ - 0, /* ss2 */ - 0, /* cr3 */ - 0, /* eip */ - 0, /* eflags */ - 0, /* eax */ - 0, /* ecx */ - 0, /* edx */ - 0, /* ebx */ - 0, /* esp */ - 0, /* ebp */ - 0, /* esi */ - 0, /* edi */ - 0, /* es */ - 0, /* cs */ - 0, /* ss */ - 0, /* ds */ - 0, /* fs */ - 0, /* gs */ - KERNEL_LDT, /* ldt */ - 0, /* trace_trap */ - 0x0FFF /* IO bitmap offset - - beyond end of TSS segment, - so no bitmap */ -}; /* * The transient stack for sysenter. @@ -108,126 +73,9 @@ struct i386_tss master_ktss * due to a single-step trace trap at system call entry. */ struct sysenter_stack master_sstk - __attribute__ ((section ("__DESC, master_sstk"))) - __attribute__ ((aligned (16))) = { {0}, 0 }; +__attribute__ ((section("__HIB, __desc"))) +__attribute__ ((aligned(16))) = { {0}, 0 }; -#ifdef X86_64 -struct x86_64_tss master_ktss64 __attribute__ ((aligned (4096))) = { +struct x86_64_tss master_ktss64 __attribute__ ((aligned(4096))) __attribute__ ((section("__HIB, __desc"))) = { .io_bit_map_offset = 0x0FFF, }; -#endif /* X86_64 */ - - - -/* - * Task structure for double-fault handler: - */ -struct i386_tss master_dftss - __attribute__ ((section ("__DESC, master_dftss"))) - __attribute__ ((aligned (4096))) = { - 0, /* back link */ - (int) &df_task_stack_end - 4, /* esp0 */ - KERNEL_DS, /* ss0 */ - 0, /* esp1 */ - 0, /* ss1 */ - 0, /* esp2 */ - 0, /* ss2 */ - 0, /* cr3 */ - (int) &df_task_start, /* eip */ - 0, /* eflags */ - 0, /* eax */ - 0, /* ecx */ - 0, /* edx */ - 0, /* ebx */ - (int) &df_task_stack_end - 4, /* esp */ - 0, /* ebp */ - 0, /* esi */ - 0, /* edi */ - KERNEL_DS, /* es */ - KERNEL_CS, /* cs */ - KERNEL_DS, /* ss */ - KERNEL_DS, /* ds */ - KERNEL_DS, /* fs */ - CPU_DATA_GS, /* gs */ - KERNEL_LDT, /* ldt */ - 0, /* trace_trap */ - 0x0FFF /* IO bitmap offset - - beyond end of TSS segment, - so no bitmap */ -}; - - -/* - * Task structure for machine_check handler: - */ -struct i386_tss master_mctss - __attribute__ ((section ("__DESC, master_mctss"))) - __attribute__ ((aligned (4096))) = { - 0, /* back link */ - (int) &mc_task_stack_end - 4, /* esp0 */ - KERNEL_DS, /* ss0 */ - 0, /* esp1 */ - 0, /* ss1 */ - 0, /* esp2 */ - 0, /* ss2 */ - 0, /* cr3 */ - (int) &mc_task_start, /* eip */ - 0, /* eflags */ - 0, /* eax */ - 0, /* ecx */ - 0, /* edx */ - 0, /* ebx */ - (int) &mc_task_stack_end - 4, /* esp */ - 0, /* ebp */ - 0, /* esi */ - 0, /* edi */ - KERNEL_DS, /* es */ - KERNEL_CS, /* cs */ - KERNEL_DS, /* ss */ - KERNEL_DS, /* ds */ - KERNEL_DS, /* fs */ - CPU_DATA_GS, /* gs */ - KERNEL_LDT, /* ldt */ - 0, /* trace_trap */ - 0x0FFF /* IO bitmap offset - - beyond end of TSS segment, - so no bitmap */ -}; - -#if MACH_KDB - -struct i386_tss master_dbtss - __attribute__ ((section ("__DESC, master_dbtss"))) - __attribute__ ((aligned (4096))) = { - 0, /* back link */ - 0, /* esp0 */ - KERNEL_DS, /* ss0 */ - 0, /* esp1 */ - 0, /* ss1 */ - 0, /* esp2 */ - 0, /* ss2 */ - 0, /* cr3 */ - 0, /* eip */ - 0, /* eflags */ - 0, /* eax */ - 0, /* ecx */ - 0, /* edx */ - 0, /* ebx */ - 0, /* esp */ - 0, /* ebp */ - 0, /* esi */ - 0, /* edi */ - KERNEL_DS, /* es */ - KERNEL_CS, /* cs */ - KERNEL_DS, /* ss */ - KERNEL_DS, /* ds */ - KERNEL_DS, /* fs */ - KERNEL_DS, /* gs */ - KERNEL_LDT, /* ldt */ - 0, /* trace_trap */ - 0x0FFF /* IO bitmap offset - - beyond end of TSS segment, - so no bitmap */ -}; - -#endif /* MACH_KDB */