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 OPENSSL_cleanse 61 .type OPENSSL_cleanse,%function 62 .align 5 63 OPENSSL_cleanse: 64 cbz x1,.Lret // len==0? 65 cmp x1,#15 66 b.hi .Lot // len>15 67 nop 68 .Little: 69 strb wzr,[x0],#1 // store byte-by-byte 70 subs x1,x1,#1 71 b.ne .Little 72 .Lret: ret 73 74 .align 4 75 .Lot: tst x0,#7 76 b.eq .Laligned // inp is aligned 77 strb wzr,[x0],#1 // store byte-by-byte 78 sub x1,x1,#1 79 b .Lot 80 81 .align 4 82 .Laligned: 83 str xzr,[x0],#8 // store word-by-word 84 sub x1,x1,#8 85 tst x1,#-8 86 b.ne .Laligned // len>=8 87 cbnz x1,.Little // len!=0? 88 ret 89 .size OPENSSL_cleanse,.-OPENSSL_cleanse 90 91 .globl CRYPTO_memcmp 92 .type CRYPTO_memcmp,%function 93 .align 4 94 CRYPTO_memcmp: 95 eor w3,w3,w3 96 cbz x2,.Lno_data // len==0? 97 cmp x2,#16 98 b.ne .Loop_cmp 99 ldp x8,x9,[x0] 100 ldp x10,x11,[x1] 101 eor x8,x8,x10 102 eor x9,x9,x11 103 orr x8,x8,x9 104 mov x0,#1 105 cmp x8,#0 106 csel x0,xzr,x0,eq 107 ret 108 109 .align 4 110 .Loop_cmp: 111 ldrb w4,[x0],#1 112 ldrb w5,[x1],#1 113 eor w4,w4,w5 114 orr w3,w3,w4 115 subs x2,x2,#1 116 b.ne .Loop_cmp 117 118 .Lno_data: 119 neg w0,w3 120 lsr w0,w0,#31 121 ret 122 .size CRYPTO_memcmp,.-CRYPTO_memcmp 123