ObjFW  Check-in [b57d18acaa]

Overview
Comment:Revert lookup-asm-x86_64-macho.S to AT&T syntax

Intel syntax is too buggy in the Apple assembler.

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SHA3-256: b57d18acaacbb4b4de65721972a47f361dbba83dcb92814f689230874caf5789
User & Date: js on 2021-01-31 23:52:30
Other Links: manifest | tags
Context
2021-02-01
00:11
Revert lookup-asm-x86_64-elf.S back to AT&T syntax check-in: 8648662754 user: js tags: trunk
2021-01-31
23:52
Revert lookup-asm-x86_64-macho.S to AT&T syntax check-in: b57d18acaa user: js tags: trunk
15:16
of_asprintf: Fix type mismatch on LP64 systems check-in: 07f4a82038 user: js tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Modified src/runtime/lookup-asm/lookup-asm-x86_64-macho.S from [0df35756bb] to [799d4a8d9c].

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 * 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"

.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, __text, regular, pure_instructions
.macro generate_lookup
$0:
	test	rdi, rdi
	jz	ret_nil

	bt	edi, 0
	jc	Ltagged_pointer_$0

	mov	r8, [rdi]
	mov	r8, [r8+64]

Lmain_$0:
	mov	rax, [rsi]
	movzx	ecx, ah
	movzx	edx, al
#ifdef OF_SELUID24
	shr	eax, 16

	mov	r8, [r8+rax*8]
#endif
	mov	r8, [r8+rcx*8]
	mov	rax, [r8+rdx*8]

	test	rax, rax
	jz	$1

	ret

Ltagged_pointer_$0:
	mov	rax, [rip+_objc_tagged_pointer_secret@GOTPCREL]
	xor	rdi, [rax]
	and	dil, 0xE
	movzx	r8, dil

	mov	rax, [rip+_objc_tagged_pointer_classes@GOTPCREL]
	mov	r8, [rax+r8*4]
	mov	r8, [r8+64]

	jmp	Lmain_$0
.endmacro

.macro generate_lookup_super
$0:
	mov	r8, rdi
	mov	rdi, [rdi]
	test	rdi, rdi
	jz	ret_nil

	mov	r8, [r8+8]
	mov	r8, [r8+64]
	jmp	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:
	lea	rax, [rip+nil_method]
	ret

nil_method:
	mov	rax, rdi
	ret








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 * 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:
	testq	%rdi, %rdi
	jz	ret_nil

	btl	$$0, %edi
	jc	Ltagged_pointer_$0

	movq	(%rdi), %r8
	movq	64(%r8), %r8

Lmain_$0:
	movq	(%rsi), %rax
	movzbl	%ah, %ecx
	movzbl	%al, %edx
#ifdef OF_SELUID24
	shrl	$$16, %eax

	movq	(%r8,%rax,8), %r8
#endif
	movq	(%r8,%rcx,8), %r8
	movq	(%r8,%rdx,8), %rax

	testq	%rax, %rax
	jz	$1

	ret

Ltagged_pointer_$0:
	movq	_objc_tagged_pointer_secret@GOTPCREL(%rip), %rax
	xorq	(%rax), %rdi
	andb	$$0xE, %dil
	movzbq	%dil, %r8

	movq	_objc_tagged_pointer_classes@GOTPCREL(%rip), %rax
	movq	(%rax,%r8,4), %r8
	movq	64(%r8), %r8

	jmp	Lmain_$0
.endmacro

.macro generate_lookup_super
$0:
	movq	%rdi, %r8
	movq	(%rdi), %rdi
	testq	%rdi, %rdi
	jz	ret_nil

	movq	8(%r8), %r8
	movq	64(%r8), %r8
	jmp	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:
	leaq	nil_method(%rip), %rax
	ret

nil_method:
	movq	%rdi, %rax
	ret

Fossil 2.23 [47362306a7] 2023-11-01 18:56:47
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