ObjFW  Diff

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/*
 * Copyright (c) 2008-2022 Jonathan Schleifer <js@nil.im>
 * Copyright (c) 2008-2024 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.
 *
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.globl objc_msg_lookup_super
.globl objc_msg_lookup_super_stret

.section .text
.macro GENERATE_LOOKUP name notFound
\name:
	testq	%rcx, %rcx
	jz	returnNilMethod
	jz	.LreturnNilMethod

	testb	$1, %cl
	jnz	.LtaggedPointer_\name

	movq	(%rcx), %r8
	movq	56(%r8), %r8

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.endm

.macro GENERATE_LOOKUP_SUPER name lookup
\name:
	movq	%rcx, %r8
	movq	(%rcx), %rcx
	testq	%rcx, %rcx
	jz	returnNilMethod
	jz	.LreturnNilMethod

	movq	8(%r8), %r8
	movq	56(%r8), %r8
	jmp	.Lmain_\lookup
.def \name
.scl 2
.type 32
.endef
.endm

GENERATE_LOOKUP objc_msg_lookup objc_methodNotFound
GENERATE_LOOKUP objc_msg_lookup_stret objc_methodNotFound_stret
GENERATE_LOOKUP_SUPER objc_msg_lookup_super objc_msg_lookup
GENERATE_LOOKUP_SUPER objc_msg_lookup_super_stret objc_msg_lookup_stret

returnNilMethod:
	leaq	nilMethod(%rip), %rax
.LreturnNilMethod:
	leaq	.LnilMethod(%rip), %rax
	ret

nilMethod:
.LnilMethod:
	xorq	%rax, %rax
	ret