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 63OPENSSL_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 94CRYPTO_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