osfmk/kern/thread_kernel_state.h

   1 /*
   2  * Copyright (c) 2000-2016 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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  27  */
  28
  29 #ifndef _KERN_THREAD_KERNEL_STATE_H_
  30
  31 #include <vm/vm_kern.h>
  32
  33 struct thread_kernel_state {
  34         machine_thread_kernel_state  machine;       /* must be first */
  35         kern_allocation_name_t       allocation_name;
  36 } __attribute__((aligned(16)));
  37
  38 typedef struct thread_kernel_state * thread_kernel_state_t;
  39
  40 #define thread_get_kernel_state(thread) ((thread_kernel_state_t) \
  41     ((thread)->kernel_stack + kernel_stack_size - sizeof(struct thread_kernel_state)))
  42
  43 #define thread_initialize_kernel_state(thread)  \
  44     thread_get_kernel_state((thread))->allocation_name = NULL;
  45
  46 #endif /* _KERN_THREAD_KERNEL_STATE_H_ */