/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013
* Jonathan Schleifer <js@webkeks.org>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#include "config.h"
.globl _objc_msg_lookup
.globl _objc_msg_lookup_super
.section __TEXT, __text, regular, pure_instructions
_objc_msg_lookup:
testq %rdi, %rdi
jz ret_nil
movq (%rdi), %r8
movq 64(%r8), %r8
lookup:
movq (%rsi), %rax
movzbl %ah, %ecx
movzbl %al, %edx
#ifdef OF_SELUID24
shrl $16, %eax
movq (%r8,%rax,8), %r8
#endif
movq (%r8,%rcx,8), %r8
movq (%r8,%rdx,8), %rax
testq %rax, %rax
jz forward
ret
forward:
jmp _objc_not_found_handler
_objc_msg_lookup_super:
movq (%rdi), %rax
testq %rax, %rax
jz ret_nil
movq 8(%rdi), %r8
movq 64(%r8), %r8
movq %rdi, %rax
jmp lookup
ret_nil:
leaq nil_method(%rip), %rax
ret
nil_method:
movq %rdi, %rax
ret