summaryrefslogtreecommitdiff
path: root/deps/openssl/asm/x64-elf-gas/x86_64cpuid.s
blob: 0a565a989bb85740e2e262db73b23331b409d7e3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
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
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194

.section	.init
	call	OPENSSL_cpuid_setup

.text


.globl	OPENSSL_atomic_add
.type	OPENSSL_atomic_add,@function
.align	16
OPENSSL_atomic_add:
	movl	(%rdi),%eax
.Lspin:	leaq	(%rsi,%rax,1),%r8
.byte	0xf0

	cmpxchgl	%r8d,(%rdi)
	jne	.Lspin
	movl	%r8d,%eax
.byte	0x48,0x98

	.byte	0xf3,0xc3
.size	OPENSSL_atomic_add,.-OPENSSL_atomic_add

.globl	OPENSSL_rdtsc
.type	OPENSSL_rdtsc,@function
.align	16
OPENSSL_rdtsc:
	rdtsc
	shlq	$32,%rdx
	orq	%rdx,%rax
	.byte	0xf3,0xc3
.size	OPENSSL_rdtsc,.-OPENSSL_rdtsc

.globl	OPENSSL_ia32_cpuid
.type	OPENSSL_ia32_cpuid,@function
.align	16
OPENSSL_ia32_cpuid:
	movq	%rbx,%r8

	xorl	%eax,%eax
	cpuid
	movl	%eax,%r11d

	xorl	%eax,%eax
	cmpl	$1970169159,%ebx
	setne	%al
	movl	%eax,%r9d
	cmpl	$1231384169,%edx
	setne	%al
	orl	%eax,%r9d
	cmpl	$1818588270,%ecx
	setne	%al
	orl	%eax,%r9d
	jz	.Lintel

	cmpl	$1752462657,%ebx
	setne	%al
	movl	%eax,%r10d
	cmpl	$1769238117,%edx
	setne	%al
	orl	%eax,%r10d
	cmpl	$1145913699,%ecx
	setne	%al
	orl	%eax,%r10d
	jnz	.Lintel


	movl	$2147483648,%eax
	cpuid
	cmpl	$2147483656,%eax
	jb	.Lintel

	movl	$2147483656,%eax
	cpuid
	movzbq	%cl,%r10
	incq	%r10

	movl	$1,%eax
	cpuid
	btl	$28,%edx
	jnc	.Ldone
	shrl	$16,%ebx
	cmpb	%r10b,%bl
	ja	.Ldone
	andl	$4026531839,%edx
	jmp	.Ldone

.Lintel:
	cmpl	$4,%r11d
	movl	$-1,%r10d
	jb	.Lnocacheinfo

	movl	$4,%eax
	movl	$0,%ecx
	cpuid
	movl	%eax,%r10d
	shrl	$14,%r10d
	andl	$4095,%r10d

.Lnocacheinfo:
	movl	$1,%eax
	cpuid
	cmpl	$0,%r9d
	jne	.Lnotintel
	orl	$1048576,%edx
	andb	$15,%ah
	cmpb	$15,%ah
	je	.Lnotintel
	orl	$1073741824,%edx
.Lnotintel:
	btl	$28,%edx
	jnc	.Ldone
	andl	$4026531839,%edx
	cmpl	$0,%r10d
	je	.Ldone

	orl	$268435456,%edx
	shrl	$16,%ebx
	cmpb	$1,%bl
	ja	.Ldone
	andl	$4026531839,%edx
.Ldone:
	shlq	$32,%rcx
	movl	%edx,%eax
	movq	%r8,%rbx
	orq	%rcx,%rax
	.byte	0xf3,0xc3
.size	OPENSSL_ia32_cpuid,.-OPENSSL_ia32_cpuid

.globl	OPENSSL_cleanse
.type	OPENSSL_cleanse,@function
.align	16
OPENSSL_cleanse:
	xorq	%rax,%rax
	cmpq	$15,%rsi
	jae	.Lot
	cmpq	$0,%rsi
	je	.Lret
.Little:
	movb	%al,(%rdi)
	subq	$1,%rsi
	leaq	1(%rdi),%rdi
	jnz	.Little
.Lret:
	.byte	0xf3,0xc3
.align	16
.Lot:
	testq	$7,%rdi
	jz	.Laligned
	movb	%al,(%rdi)
	leaq	-1(%rsi),%rsi
	leaq	1(%rdi),%rdi
	jmp	.Lot
.Laligned:
	movq	%rax,(%rdi)
	leaq	-8(%rsi),%rsi
	testq	$-8,%rsi
	leaq	8(%rdi),%rdi
	jnz	.Laligned
	cmpq	$0,%rsi
	jne	.Little
	.byte	0xf3,0xc3
.size	OPENSSL_cleanse,.-OPENSSL_cleanse
.globl	OPENSSL_wipe_cpu
.type	OPENSSL_wipe_cpu,@function
.align	16
OPENSSL_wipe_cpu:
	pxor	%xmm0,%xmm0
	pxor	%xmm1,%xmm1
	pxor	%xmm2,%xmm2
	pxor	%xmm3,%xmm3
	pxor	%xmm4,%xmm4
	pxor	%xmm5,%xmm5
	pxor	%xmm6,%xmm6
	pxor	%xmm7,%xmm7
	pxor	%xmm8,%xmm8
	pxor	%xmm9,%xmm9
	pxor	%xmm10,%xmm10
	pxor	%xmm11,%xmm11
	pxor	%xmm12,%xmm12
	pxor	%xmm13,%xmm13
	pxor	%xmm14,%xmm14
	pxor	%xmm15,%xmm15
	xorq	%rcx,%rcx
	xorq	%rdx,%rdx
	xorq	%rsi,%rsi
	xorq	%rdi,%rdi
	xorq	%r8,%r8
	xorq	%r9,%r9
	xorq	%r10,%r10
	xorq	%r11,%r11
	leaq	8(%rsp),%rax
	.byte	0xf3,0xc3
.size	OPENSSL_wipe_cpu,.-OPENSSL_wipe_cpu