/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012
* 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.
*/
#if defined(__i386__) && defined(__ELF__)
.intel_syntax noprefix
.globl objc_msg_lookup
.globl objc_msg_lookup_super
.section .text
objc_msg_lookup:
mov edx, [esp+4]
test edx, edx
jz ret_nil
mov edx, [edx]
mov edx, [edx+32]
lookup:
mov eax, [esp+8]
movzx ecx, byte ptr [eax+2]
mov edx, [edx+ecx*4]
movzx ecx, byte ptr [eax+1]
mov edx, [edx+ecx*4]
movzx ecx, byte ptr [eax]
mov eax, [edx+ecx*4]
test eax, eax
jz forward
ret
forward:
call get_eip
.L1:
add eax, offset objc_forward_handler - offset .L1
jmp [eax]
objc_msg_lookup_super:
mov edx, [esp+4]
cmp dword ptr [edx], 0
je ret_nil
mov edx, [edx+4]
mov edx, [edx+32]
jmp lookup
ret_nil:
call get_eip
.L2:
add eax, offset nil_method - offset .L2
ret
nil_method:
mov eax, [esp+4]
ret
get_eip:
mov eax, dword ptr [esp]
ret
.type objc_msg_lookup, @function
.type objc_msg_lookup_super, @function
.size objc_msg_lookup, forward-objc_msg_lookup
.size objc_msg_lookup_super, ret_nil-objc_msg_lookup_super
#endif