/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
* 2018, 2019, 2020
* Jonathan Schleifer <js@nil.im>
*
* 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"
#include "platform.h"
.globl objc_msg_lookup
.globl objc_msg_lookup_stret
.globl objc_msg_lookup_super
.globl objc_msg_lookup_super_stret
.section .text
.macro generate_lookup name not_found
\name:
cmpwi %r3, 0
beq- ret_nil
lwz %r5, 0(%r3)
lwz %r5, 32(%r5)
.Lmain_\name:
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 \not_found@plt
.type \name, @function
.size \name, .-\name
.endm
.macro generate_lookup_super name lookup
\name:
mr %r5, %r3
lwz %r3, 0(%r3)
cmpwi %r3, 0
beq- ret_nil
lwz %r5, 4(%r5)
lwz %r5, 32(%r5)
b .Lmain_\lookup
.type \name, @function
.size \name, .-\name
.endm
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, nil_method-0b
blr
nil_method:
li %r3, 0
blr
get_pc:
mflr %r3
blr
#ifdef OF_LINUX
.section .note.GNU-stack, "", @progbits
#endif