ObjFW  Diff

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Differences From Artifact [4341f730bd]:

To Artifact [a240f9cb41]:

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 * 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 notFound
\name:
	movl	4(%esp), %edx
	testl	%edx, %edx
	jz	returnNilMethod

	testb	$1, %dl
	jnz	.LtaggedPointer_\name

	movl	(%edx), %edx
	movl	32(%edx), %edx

.Lmain_\name:
	movl	8(%esp), %eax

#ifdef OF_SELUID24
	movzbl	2(%eax), %ecx
	movl	(%edx,%ecx,4), %edx
#endif
	movzbl	1(%eax), %ecx
	movl	(%edx,%ecx,4), %edx
	movzbl	(%eax), %ecx
	movl	(%edx,%ecx,4), %eax

	testl	%eax, %eax
	jz	0f

	ret

0:
	call	getEIP
	addl	$_GLOBAL_OFFSET_TABLE_, %eax
	movl	\notFound@GOT(%eax), %eax
	jmp	*%eax

.LtaggedPointer_\name:
	call	getEIP
	addl	$_GLOBAL_OFFSET_TABLE_, %eax

	movl	objc_taggedPointerSecret@GOT(%eax), %ecx
	xorl	(%ecx), %edx
	andb	$0xE, %dl
	movzbl	%dl, %edx

	movl	objc_taggedPointerClasses@GOT(%eax), %eax
	movl	(%eax,%edx,2), %edx
	movl	32(%edx), %edx

	jmp	.Lmain_\name
.type \name, %function
.size \name, .-\name
.endm

.macro GENERATE_LOOKUP_SUPER name lookup
\name:
	movl	4(%esp), %edx
	movl	(%edx), %eax
	testl	%eax, %eax
	jz	returnNilMethod

	movl	%eax, 4(%esp)
	mov	4(%edx), %edx
	mov	32(%edx), %edx
	jmp	.Lmain_\lookup
.type \name, %function
.size \name, .-\name
.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:
	call	getEIP
	addl	$_GLOBAL_OFFSET_TABLE_, %eax
	leal	nilMethod@GOTOFF(%eax), %eax
	ret

nilMethod:
	xorl	%eax, %eax
	ret

getEIP:
	movl	(%esp), %eax
	ret

#if defined(OF_LINUX) || defined(OF_HAIKU) || defined(OF_HURD)
.section .note.GNU-stack, "", %progbits
#endif








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 * file.
 */

#include "config.h"

#include "platform.h"

.intel_syntax noprefix

.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 notFound
\name:
	mov	edx, [esp + 4]
	test	edx, edx
	jz	short returnNilMethod

	test	dl, 1
	jnz	short .LtaggedPointer_\name

	mov	edx, [edx]
	mov	edx, [edx + 32]

.Lmain_\name:
	mov	eax, [esp + 8]

#ifdef OF_SELUID24
	movzx	ecx, byte ptr [eax + 2]
	mov	edx, [edx + 4 * ecx]
#endif
	movzx	ecx, byte ptr [eax + 1]
	mov	edx, [edx + 4 * ecx]
	movzx	ecx, byte ptr [eax]
	mov	eax, [edx + 4 * ecx]

	test	eax, eax
	jz	short 0f

	ret

0:
	call	getEIP
	add	eax, offset _GLOBAL_OFFSET_TABLE_
	mov	eax, [eax + \notFound@GOT]
	jmp	eax

.LtaggedPointer_\name:
	call	getEIP
	add	eax, offset _GLOBAL_OFFSET_TABLE_

	mov	ecx, [eax + objc_taggedPointerSecret@GOT]
	xor	edx, [ecx]
	and	dl, 0xE
	movzx	edx, dl

	mov	eax, [eax + objc_taggedPointerClasses@GOT]
	mov	edx, [eax + 2 * edx]
	mov	edx, [edx + 32]

	jmp	short .Lmain_\name
.type \name, %function
.size \name, .-\name
.endm

.macro GENERATE_LOOKUP_SUPER name lookup
\name:
	mov	edx, [esp + 4]
	mov	eax, [edx]
	test	eax, eax
	jz	short returnNilMethod

	mov	[esp + 4], eax
	mov	edx, [edx + 4]
	mov	edx, [edx + 32]
	jmp	short .Lmain_\lookup
.type \name, %function
.size \name, .-\name
.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:
	call	getEIP
	add	eax, offset _GLOBAL_OFFSET_TABLE_
	lea	eax, [eax + nilMethod@GOTOFF]
	ret

nilMethod:
	xor	eax, eax
	ret

getEIP:
	mov	eax, [esp]
	ret

#if defined(OF_LINUX) || defined(OF_HAIKU) || defined(OF_HURD)
.section .note.GNU-stack, "", %progbits
#endif
Fossil 2.23 [47362306a7] 2023-11-01 18:56:47
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