ObjFW  Check-in [55e786c880]

Overview
Comment:Obfuscate tagged pointers on SPARC/ELF
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | tagged-pointers
Files: files | file ages | folders
SHA3-256: 55e786c88059b29dc676c9cf66f68ad5d125dcfd322a9d6ae33c9cc551d2e7c4
User & Date: js on 2020-07-12 15:17:46
Other Links: branch diff | manifest | tags
Context
2020-07-12
18:00
Merge trunk into branch "tagged-pointers" check-in: aba47e526e user: js tags: tagged-pointers
15:17
Obfuscate tagged pointers on SPARC/ELF check-in: 55e786c880 user: js tags: tagged-pointers
14:17
Obfuscate tagged pointers on PowerPC/ELF check-in: eee832144e user: js tags: tagged-pointers
Changes
Hide Diffs Side-by-Side Diffs Ignore Whitespace Patch

Modified src/runtime/lookup-asm/lookup-asm-sparc-elf.S from [e419c60c5d] to [77dbe58098].

︙
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

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








-
-
-


-
+

-
+



+

-
-
-
-
-
-
+
+
+
+
+
+
+
+
+
+
+
+
+
+

-
+
+









0:
	mov	%o7, %g1
	call	\not_found
	 mov	%g1, %o7

.Ltagged_pointer_\name:
	and	%o0, 0xE, %o2
	sll	%o2, 1, %o2

#ifdef OF_PIC
	mov	%o7, %g1
	sethi	%hi(_GLOBAL_OFFSET_TABLE_ - 4), %o3
	sethi	%hi(_GLOBAL_OFFSET_TABLE_-4), %o3
	call	0f
	 or	%o3, %lo(_GLOBAL_OFFSET_TABLE_ + 4), %o3
	 or	%o3, %lo(_GLOBAL_OFFSET_TABLE_+4), %o3
0:
	add	%o7, %o3, %o3
	mov	%g1, %o7
#endif

	sethi	%hi(objc_tagged_pointer_classes), %o0
	or	%o0, %lo(objc_tagged_pointer_classes), %o0
	ld	[%o3 + %o0], %o0
#else
	sethi	%hi(objc_tagged_pointer_classes), %o0
	or	%o0, %lo(objc_tagged_pointer_classes), %o0
	sethi	%hi(objc_tagged_pointer_secret), %o2
	or	%o2, %lo(objc_tagged_pointer_secret), %o2
#ifdef OF_PIC
	ld	[%o3 + %o2], %o2
#endif
	ld	[%o2], %o2
	xor	%o0, %o2, %o0
	and	%o0, 0xE, %o0
	sll	%o0, 1, %o0

	sethi	%hi(objc_tagged_pointer_classes), %o2
	or	%o2, %lo(objc_tagged_pointer_classes), %o2
#ifdef OF_PIC
	ld	[%o3 + %o2], %o2
#endif
	ld	[%o0 + %o2], %o2

	ld	[%o2 + %o0], %o2
	ba	.Lmain_\name
	 ld	[%o2 + 32], %o2
.type \name, %function
.size \name, .-\name
.endm

.macro generate_lookup_super name lookup
︙
114
115
116
117
118
119
120
121

122
123

124
125
126
127
128
129
130

121
122
123
124
125
126
127

128
129

130
131
132
133
134
135
136
137








-
+

-
+








generate_lookup_super objc_msg_lookup_super objc_msg_lookup
generate_lookup_super objc_msg_lookup_super_stret objc_msg_lookup_stret

ret_nil:
#ifdef OF_PIC
	mov	%o7, %g1

	sethi	%hi(_GLOBAL_OFFSET_TABLE_ - 4), %o1
	sethi	%hi(_GLOBAL_OFFSET_TABLE_-4), %o1
	call	0f
	 add	%o1, %lo(_GLOBAL_OFFSET_TABLE_ + 4), %o1
	 add	%o1, %lo(_GLOBAL_OFFSET_TABLE_+4), %o1
0:
	add	%o7, %o1, %o1

	sethi	%hi(nil_method), %o0
	or	%o0, %lo(nil_method), %o0

	jmpl	%g1 + 8, %g0
︙

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