/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
* 2018
* Jonathan Schleifer <js@heap.zone>
*
* 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_stret
.globl _objc_msg_lookup_super
.globl _objc_msg_lookup_super_stret
.section __TEXT, __text, regular, pure_instructions
.macro generate_lookup
$0:
cmpwi r3, 0
beq- ret_nil
lwz r5, 0(r3)
lwz r5, 32(r5)
Lmain_$0:
lwz r8, 0(r4)
#ifdef OF_SELUID24
rlwinm r6, r8, 18, 0x3FC
#endif
rlwinm r7, r8, 26, 0x3FC
rlwinm r8, r8, 2, 0x3FC
#ifdef OF_SELUID24
lwzx r5, r5, r6
#endif
lwzx r5, r5, r7
lwzx r5, r5, r8
cmpwi r5, 0
beq- 0f
mr r3, r5
blr
0:
b $1
.endmacro
.macro generate_lookup_super
$0:
mr r5, r3
lwz r3, 0(r3)
cmpwi r3, 0
beq- ret_nil
lwz r5, 4(r5)
lwz r5, 32(r5)
b Lmain_$1
.endmacro
generate_lookup _objc_msg_lookup, _objc_method_not_found
generate_lookup _objc_msg_lookup_stret, _objc_method_not_found_stret
generate_lookup_super _objc_msg_lookup_super, _objc_msg_lookup
generate_lookup_super _objc_msg_lookup_super_stret, _objc_msg_lookup_stret
ret_nil:
mflr r0
bl get_pc
mtlr r0
0:
addi r3, r3, lo16(nil_method-0b)
blr
nil_method:
li r3, 0
blr
get_pc:
mflr r3
blr