2 * Copyright (c) 1999-2007 Apple Inc. All Rights Reserved.
4 * @APPLE_LICENSE_HEADER_START@
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. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
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26 #include <mach/vm_param.h>
29 .private_extern __a1a2_tramphead
30 .private_extern __a1a2_firsttramp
31 .private_extern __a1a2_nexttramp
32 .private_extern __a1a2_trampend
37 andl $0xFFFFFFF8, %eax
38 subl $ PAGE_SIZE, %eax
39 movl 4(%esp), %ecx // self -> ecx
40 movl %ecx, 8(%esp) // ecx -> _cmd
41 movl (%eax), %ecx // blockPtr -> ecx
42 movl %ecx, 4(%esp) // ecx -> self
43 jmp *12(%ecx) // tail to block->invoke
45 .macro TrampolineEntry
55 __a1a2_nexttramp: // used to calculate size of each trampoline
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