// Copyright 2017 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. #include "textflag.h" #define HASHUPDATE \ SHA256H V9.S4, V3, V2 \ SHA256H2 V9.S4, V8, V3 \ VMOV V2.B16, V8.B16 // func sha256block(h []uint32, p []byte, k []uint32) TEXT ·sha256block(SB),NOSPLIT,$0 MOVD h_base+0(FP), R0 // Hash value first address MOVD p_base+24(FP), R1 // message first address MOVD k_base+48(FP), R2 // k constants first address MOVD p_len+32(FP), R3 // message length VLD1 (R0), [V0.S4, V1.S4] // load h(a,b,c,d,e,f,g,h) VLD1.P 64(R2), [V16.S4, V17.S4, V18.S4, V19.S4] VLD1.P 64(R2), [V20.S4, V21.S4, V22.S4, V23.S4] VLD1.P 64(R2), [V24.S4, V25.S4, V26.S4, V27.S4] VLD1 (R2), [V28.S4, V29.S4, V30.S4, V31.S4] //load 64*4bytes K constant(K0-K63) blockloop: VLD1.P 16(R1), [V4.B16] // load 16bytes message VLD1.P 16(R1), [V5.B16] // load 16bytes message VLD1.P 16(R1), [V6.B16] // load 16bytes message VLD1.P 16(R1), [V7.B16] // load 16bytes message VMOV V0.B16, V2.B16 // backup: VO h(dcba) VMOV V1.B16, V3.B16 // backup: V1 h(hgfe) VMOV V2.B16, V8.B16 VREV32 V4.B16, V4.B16 // prepare for using message in Byte format VREV32 V5.B16, V5.B16 VREV32 V6.B16, V6.B16 VREV32 V7.B16, V7.B16 VADD V16.S4, V4.S4, V9.S4 // V18(W0+K0...W3+K3) SHA256SU0 V5.S4, V4.S4 // V4: (su0(W1)+W0,...,su0(W4)+W3) HASHUPDATE // H4 VADD V17.S4, V5.S4, V9.S4 // V18(W4+K4...W7+K7) SHA256SU0 V6.S4, V5.S4 // V5: (su0(W5)+W4,...,su0(W8)+W7) SHA256SU1 V7.S4, V6.S4, V4.S4 // V4: W16-W19 HASHUPDATE // H8 VADD V18.S4, V6.S4, V9.S4 // V18(W8+K8...W11+K11) SHA256SU0 V7.S4, V6.S4 // V6: (su0(W9)+W8,...,su0(W12)+W11) SHA256SU1 V4.S4, V7.S4, V5.S4 // V5: W20-W23 HASHUPDATE // H12 VADD V19.S4, V7.S4, V9.S4 // V18(W12+K12...W15+K15) SHA256SU0 V4.S4, V7.S4 // V7: (su0(W13)+W12,...,su0(W16)+W15) SHA256SU1 V5.S4, V4.S4, V6.S4 // V6: W24-W27 HASHUPDATE // H16 VADD V20.S4, V4.S4, V9.S4 // V18(W16+K16...W19+K19) SHA256SU0 V5.S4, V4.S4 // V4: (su0(W17)+W16,...,su0(W20)+W19) SHA256SU1 V6.S4, V5.S4, V7.S4 // V7: W28-W31 HASHUPDATE // H20 VADD V21.S4, V5.S4, V9.S4 // V18(W20+K20...W23+K23) SHA256SU0 V6.S4, V5.S4 // V5: (su0(W21)+W20,...,su0(W24)+W23) SHA256SU1 V7.S4, V6.S4, V4.S4 // V4: W32-W35 HASHUPDATE // H24 VADD V22.S4, V6.S4, V9.S4 // V18(W24+K24...W27+K27) SHA256SU0 V7.S4, V6.S4 // V6: (su0(W25)+W24,...,su0(W28)+W27) SHA256SU1 V4.S4, V7.S4, V5.S4 // V5: W36-W39 HASHUPDATE // H28 VADD V23.S4, V7.S4, V9.S4 // V18(W28+K28...W31+K31) SHA256SU0 V4.S4, V7.S4 // V7: (su0(W29)+W28,...,su0(W32)+W31) SHA256SU1 V5.S4, V4.S4, V6.S4 // V6: W40-W43 HASHUPDATE // H32 VADD V24.S4, V4.S4, V9.S4 // V18(W32+K32...W35+K35) SHA256SU0 V5.S4, V4.S4 // V4: (su0(W33)+W32,...,su0(W36)+W35) SHA256SU1 V6.S4, V5.S4, V7.S4 // V7: W44-W47 HASHUPDATE // H36 VADD V25.S4, V5.S4, V9.S4 // V18(W36+K36...W39+K39) SHA256SU0 V6.S4, V5.S4 // V5: (su0(W37)+W36,...,su0(W40)+W39) SHA256SU1 V7.S4, V6.S4, V4.S4 // V4: W48-W51 HASHUPDATE // H40 VADD V26.S4, V6.S4, V9.S4 // V18(W40+K40...W43+K43) SHA256SU0 V7.S4, V6.S4 // V6: (su0(W41)+W40,...,su0(W44)+W43) SHA256SU1 V4.S4, V7.S4, V5.S4 // V5: W52-W55 HASHUPDATE // H44 VADD V27.S4, V7.S4, V9.S4 // V18(W44+K44...W47+K47) SHA256SU0 V4.S4, V7.S4 // V7: (su0(W45)+W44,...,su0(W48)+W47) SHA256SU1 V5.S4, V4.S4, V6.S4 // V6: W56-W59 HASHUPDATE // H48 VADD V28.S4, V4.S4, V9.S4 // V18(W48+K48,...,W51+K51) HASHUPDATE // H52 SHA256SU1 V6.S4, V5.S4, V7.S4 // V7: W60-W63 VADD V29.S4, V5.S4, V9.S4 // V18(W52+K52,...,W55+K55) HASHUPDATE // H56 VADD V30.S4, V6.S4, V9.S4 // V18(W59+K59,...,W59+K59) HASHUPDATE // H60 VADD V31.S4, V7.S4, V9.S4 // V18(W60+K60,...,W63+K63) HASHUPDATE // H64 SUB $64, R3, R3 // message length - 64bytes, then compare with 64bytes VADD V2.S4, V0.S4, V0.S4 VADD V3.S4, V1.S4, V1.S4 CBNZ R3, blockloop sha256ret: VST1 [V0.S4, V1.S4], (R0) // store hash value H RET