ObjFW  Check-in [5bf7a7f7ba]

Overview
Comment:Revert lookup-asm-x86-elf.S back to AT&T syntax

This is for consistency with the Mach-O version.

Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA3-256: 5bf7a7f7bad2af1ed8b4bd1137ba9e642b7c6a18f1531bd209b3af8061fe70ba
User & Date: js on 2021-02-08 02:16:35
Other Links: manifest | tags
Context
2021-02-17
23:02
README.md: Add back the Gitter room check-in: a498cfaf93 user: js tags: trunk
2021-02-08
02:16
Revert lookup-asm-x86-elf.S back to AT&T syntax check-in: 5bf7a7f7ba user: js tags: trunk
02:08
Revert call-x86_64-elf.S back to AT&T syntax check-in: 541b66cc87 user: js tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Modified src/runtime/lookup-asm/lookup-asm-x86-elf.S from [d0b7459651] to [2020d245a7].

︙︙
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117

 * 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 not_found
\name:
	mov	edx, [esp+4]
	test	edx, edx
	jz	short ret_nil

	bt	edx, 0
	jc	short .Ltagged_pointer_\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+ecx*4]
#endif
	movzx	ecx, byte ptr [eax+1]
	mov	edx, [edx+ecx*4]
	movzx	ecx, byte ptr [eax]
	mov	eax, [edx+ecx*4]

	test	eax, eax
	jz	short 0f

	ret

0:
	call	get_eip
	add	eax, offset _GLOBAL_OFFSET_TABLE_
	lea	eax, [eax+\not_found@GOTOFF]
	jmp	eax

.Ltagged_pointer_\name:
	call	get_eip
	add	eax, offset _GLOBAL_OFFSET_TABLE_

	lea	ecx, [eax+objc_tagged_pointer_secret@GOTOFF]
	xor	edx, [ecx]
	and	dl, 0xE
	movzx	edx, dl

	lea	eax, [eax+objc_tagged_pointer_classes@GOTOFF]
	mov	edx, [eax+edx*2]
	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 ret_nil

	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_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:
	call	get_eip
	add	eax, offset _GLOBAL_OFFSET_TABLE_
	lea	eax, [eax+nil_method@GOTOFF]
	ret

nil_method:
	xor	eax, eax
	ret

get_eip:
	mov	eax, [esp]
	ret

#ifdef OF_LINUX
.section .note.GNU-stack, "", %progbits
#endif








<
<








|
|
|

|
|

|
|


|


|
|

|
|
|
|

|
|





|
|
|



|

|
|
|
|

|
|
|

|






|
|
|
|

|
|
|
|











|
|



|



|






13
14
15
16
17
18
19


20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115

 * 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:
	movl	4(%esp), %edx
	testl	%edx, %edx
	jz	ret_nil

	btl	$0, %edx
	jc	.Ltagged_pointer_\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	get_eip
	addl	$_GLOBAL_OFFSET_TABLE_, %eax
	lea	\not_found@GOTOFF(%eax), %eax
	jmp	*%eax

.Ltagged_pointer_\name:
	call	get_eip
	addl	$_GLOBAL_OFFSET_TABLE_, %eax

	leal	objc_tagged_pointer_secret@GOTOFF(%eax), %ecx
	xorl	(%ecx), %edx
	andb	$0xE, %dl
	movzbl	%dl, %edx

	leal	objc_tagged_pointer_classes@GOTOFF(%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	ret_nil

	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_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:
	call	get_eip
	addl	$_GLOBAL_OFFSET_TABLE_, %eax
	leal	nil_method@GOTOFF(%eax), %eax
	ret

nil_method:
	xorl	%eax, %eax
	ret

get_eip:
	movl	(%esp), %eax
	ret

#ifdef OF_LINUX
.section .note.GNU-stack, "", %progbits
#endif

Fossil 2.23 [47362306a7] 2023-11-01 18:56:47
This page was generated in about 0.015s