/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2006 Apple Computer, 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@
*
* We don't use the i386 task switch mechanism. We need a TSS
* only to hold the kernel stack pointer for the current thread.
- *
- * XXX multiprocessor??
*/
#include <i386/tss.h>
-#include <i386/seg.h>
-#include <mach_kdb.h>
+#include <i386/pmap.h>
-struct i386_tss ktss = {
+#ifdef __i386__
+struct i386_tss master_ktss
+ __attribute__ ((section ("__DESC, master_ktss")))
+ __attribute__ ((aligned (4096))) = {
0, /* back link */
0, /* esp0 */
KERNEL_DS, /* ss0 */
beyond end of TSS segment,
so no bitmap */
};
+#endif
-#if MACH_KDB
+/*
+ * The transient stack for sysenter.
+ * At its top is a 32-bit link to the PCB in legacy mode, 64-bit otherwise.
+ * NB: it also must be large enough to contain a interrupt stack frame
+ * 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 };
-struct i386_tss dbtss = {
+#ifdef X86_64
+struct x86_64_tss master_ktss64 __attribute__ ((aligned (4096))) = {
+ .io_bit_map_offset = 0x0FFF,
+};
+#endif /* X86_64 */
+
+#ifdef __i386__
+/*
+ * Task structure for double-fault handler:
+ */
+struct i386_tss master_dftss
+ __attribute__ ((section ("__DESC, master_dftss")))
+ __attribute__ ((aligned (4096))) = {
0, /* back link */
- 0, /* esp0 */
+ (int) &df_task_stack_end - 4, /* esp0 */
KERNEL_DS, /* ss0 */
0, /* esp1 */
0, /* ss1 */
0, /* esp2 */
0, /* ss2 */
- 0, /* cr3 */
- 0, /* eip */
+ (int) IdlePDPT, /* cr3 */
+ (int) &df_task_start, /* eip */
0, /* eflags */
0, /* eax */
0, /* ecx */
0, /* edx */
0, /* ebx */
- 0, /* esp */
+ (int) &df_task_stack_end - 4, /* esp */
+ 0, /* ebp */
+ 0, /* esi */
+ 0, /* edi */
+ KERNEL_DS, /* es */
+ KERNEL32_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 */
+ (int) IdlePDPT, /* 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 */
+ KERNEL32_CS, /* cs */
KERNEL_DS, /* ss */
KERNEL_DS, /* ds */
KERNEL_DS, /* fs */
- KERNEL_DS, /* gs */
+ CPU_DATA_GS, /* gs */
KERNEL_LDT, /* ldt */
0, /* trace_trap */
0x0FFF /* IO bitmap offset -
so no bitmap */
};
-#endif /* MACH_KDB */
+#endif /* __i386__ */
projects / apple / xnu.git / blobdiff