xnu-4570.1.46.tar.gz

[apple/xnu.git] / osfmk / kern / thread_kernel_state.h

diff --git a/osfmk/kern/thread_kernel_state.h b/osfmk/kern/thread_kernel_state.h
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+/*
+ * Copyright (c) 2000-2016 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
+ * 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
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * 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@
+ */
+
+#ifndef        _KERN_THREAD_KERNEL_STATE_H_
+
+#include <vm/vm_kern.h>
+
+struct thread_kernel_state {
+    machine_thread_kernel_state  machine;           /* must be first */
+    kern_allocation_name_t       allocation_name;
+} __attribute__((aligned(16)));
+
+typedef struct thread_kernel_state * thread_kernel_state_t;
+
+#define thread_get_kernel_state(thread) ((thread_kernel_state_t) \
+    ((thread)->kernel_stack + kernel_stack_size - sizeof(struct thread_kernel_state)))
+
+#define thread_initialize_kernel_state(thread)  \
+    thread_get_kernel_state((thread))->allocation_name = NULL;
+
+#endif /* _KERN_THREAD_KERNEL_STATE_H_ */