/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2012 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@
*
* 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 = {
- 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 */
-};
-#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 = {
- 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 */
+struct x86_64_tss master_ktss64 __attribute__ ((aligned (4096))) = {
+ .io_bit_map_offset = 0x0FFF,
};
-#endif /* MACH_KDB */
projects / apple / xnu.git / blobdiff