1#include "arm_arch.h"
2
3.text
4.arch	armv8-a+crypto
5
6.align	5
7.globl	_armv7_neon_probe
8.type	_armv7_neon_probe,%function
9_armv7_neon_probe:
10	orr	v15.16b, v15.16b, v15.16b
11	ret
12.size	_armv7_neon_probe,.-_armv7_neon_probe
13
14.globl	_armv7_tick
15.type	_armv7_tick,%function
16_armv7_tick:
17#ifdef	__APPLE__
18	mrs	x0, CNTPCT_EL0
19#else
20	mrs	x0, CNTVCT_EL0
21#endif
22	ret
23.size	_armv7_tick,.-_armv7_tick
24
25.globl	_armv8_aes_probe
26.type	_armv8_aes_probe,%function
27_armv8_aes_probe:
28	aese	v0.16b, v0.16b
29	ret
30.size	_armv8_aes_probe,.-_armv8_aes_probe
31
32.globl	_armv8_sha1_probe
33.type	_armv8_sha1_probe,%function
34_armv8_sha1_probe:
35	sha1h	s0, s0
36	ret
37.size	_armv8_sha1_probe,.-_armv8_sha1_probe
38
39.globl	_armv8_sha256_probe
40.type	_armv8_sha256_probe,%function
41_armv8_sha256_probe:
42	sha256su0	v0.4s, v0.4s
43	ret
44.size	_armv8_sha256_probe,.-_armv8_sha256_probe
45
46.globl	_armv8_pmull_probe
47.type	_armv8_pmull_probe,%function
48_armv8_pmull_probe:
49	pmull	v0.1q, v0.1d, v0.1d
50	ret
51.size	_armv8_pmull_probe,.-_armv8_pmull_probe
52
53.globl	_armv8_sha512_probe
54.type	_armv8_sha512_probe,%function
55_armv8_sha512_probe:
56.long	0xcec08000	// sha512su0	v0.2d,v0.2d
57	ret
58.size	_armv8_sha512_probe,.-_armv8_sha512_probe
59
60.globl	_armv8_cpuid_probe
61.type	_armv8_cpuid_probe,%function
62_armv8_cpuid_probe:
63	mrs	x0, midr_el1
64	ret
65.size	_armv8_cpuid_probe,.-_armv8_cpuid_probe
66
67.globl	OPENSSL_cleanse
68.type	OPENSSL_cleanse,%function
69.align	5
70OPENSSL_cleanse:
71	cbz	x1,.Lret	// len==0?
72	cmp	x1,#15
73	b.hi	.Lot		// len>15
74	nop
75.Little:
76	strb	wzr,[x0],#1	// store byte-by-byte
77	subs	x1,x1,#1
78	b.ne	.Little
79.Lret:	ret
80
81.align	4
82.Lot:	tst	x0,#7
83	b.eq	.Laligned	// inp is aligned
84	strb	wzr,[x0],#1	// store byte-by-byte
85	sub	x1,x1,#1
86	b	.Lot
87
88.align	4
89.Laligned:
90	str	xzr,[x0],#8	// store word-by-word
91	sub	x1,x1,#8
92	tst	x1,#-8
93	b.ne	.Laligned	// len>=8
94	cbnz	x1,.Little	// len!=0?
95	ret
96.size	OPENSSL_cleanse,.-OPENSSL_cleanse
97
98.globl	CRYPTO_memcmp
99.type	CRYPTO_memcmp,%function
100.align	4
101CRYPTO_memcmp:
102	eor	w3,w3,w3
103	cbz	x2,.Lno_data	// len==0?
104	cmp	x2,#16
105	b.ne	.Loop_cmp
106	ldp	x8,x9,[x0]
107	ldp	x10,x11,[x1]
108	eor	x8,x8,x10
109	eor	x9,x9,x11
110	orr	x8,x8,x9
111	mov	x0,#1
112	cmp	x8,#0
113	csel	x0,xzr,x0,eq
114	ret
115
116.align	4
117.Loop_cmp:
118	ldrb	w4,[x0],#1
119	ldrb	w5,[x1],#1
120	eor	w4,w4,w5
121	orr	w3,w3,w4
122	subs	x2,x2,#1
123	b.ne	.Loop_cmp
124
125.Lno_data:
126	neg	w0,w3
127	lsr	w0,w0,#31
128	ret
129.size	CRYPTO_memcmp,.-CRYPTO_memcmp
130