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| #! /usr/bin/env perl
| # Copyright 2012-2020 The OpenSSL Project Authors. All Rights Reserved.
| #
| # Licensed under the OpenSSL license (the "License"). You may not use
| # this file except in compliance with the License. You can obtain a copy
| # in the file LICENSE in the source distribution or at
| # https://www.openssl.org/source/license.html
|
| #
| # ====================================================================
| # Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
| # project. The module is, however, dual licensed under OpenSSL and
| # CRYPTOGAMS licenses depending on where you obtain it. For further
| # details see http://www.openssl.org/~appro/cryptogams/.
| # ====================================================================
| #
| # SHA256 for C64x+.
| #
| # January 2012
| #
| # Performance is just below 10 cycles per processed byte, which is
| # almost 40% faster than compiler-generated code. Unroll is unlikely
| # to give more than ~8% improvement...
| #
| # !!! Note that this module uses AMR, which means that all interrupt
| # service routines are expected to preserve it and for own well-being
| # zero it upon entry.
|
| while (($output=shift) && ($output!~/\w[\w\-]*\.\w+$/)) {}
| open STDOUT,">$output";
|
| ($CTXA,$INP,$NUM) = ("A4","B4","A6"); # arguments
| $K256="A3";
|
| ($A,$Actx,$B,$Bctx,$C,$Cctx,$D,$Dctx,$T2,$S0,$s1,$t0a,$t1a,$t2a,$X9,$X14)
| =map("A$_",(16..31));
| ($E,$Ectx,$F,$Fctx,$G,$Gctx,$H,$Hctx,$T1,$S1,$s0,$t0e,$t1e,$t2e,$X1,$X15)
| =map("B$_",(16..31));
|
| ($Xia,$Xib)=("A5","B5"); # circular/ring buffer
| $CTXB=$t2e;
|
| ($Xn,$X0,$K)=("B7","B8","B9");
| ($Maj,$Ch)=($T2,"B6");
|
| $code.=<<___;
| .text
|
| .if .ASSEMBLER_VERSION<7000000
| .asg 0,__TI_EABI__
| .endif
| .if __TI_EABI__
| .nocmp
| .asg sha256_block_data_order,_sha256_block_data_order
| .endif
|
| .asg B3,RA
| .asg A15,FP
| .asg B15,SP
|
| .if .BIG_ENDIAN
| .asg SWAP2,MV
| .asg SWAP4,MV
| .endif
|
| .global _sha256_block_data_order
| _sha256_block_data_order:
| __sha256_block:
| .asmfunc stack_usage(64)
| MV $NUM,A0 ; reassign $NUM
| || MVK -64,B0
| [!A0] BNOP RA ; if ($NUM==0) return;
| || [A0] STW FP,*SP--[16] ; save frame pointer and alloca(64)
| || [A0] MV SP,FP
| [A0] ADDKPC __sha256_block,B2
| || [A0] AND B0,SP,SP ; align stack at 64 bytes
| .if __TI_EABI__
| [A0] MVK 0x00404,B1
| || [A0] MVKL \$PCR_OFFSET(K256,__sha256_block),$K256
| [A0] MVKH 0x50000,B1
| || [A0] MVKH \$PCR_OFFSET(K256,__sha256_block),$K256
| .else
| [A0] MVK 0x00404,B1
| || [A0] MVKL (K256-__sha256_block),$K256
| [A0] MVKH 0x50000,B1
| || [A0] MVKH (K256-__sha256_block),$K256
| .endif
| [A0] MVC B1,AMR ; setup circular addressing
| || [A0] MV SP,$Xia
| [A0] MV SP,$Xib
| || [A0] ADD B2,$K256,$K256
| || [A0] MV $CTXA,$CTXB
| || [A0] SUBAW SP,2,SP ; reserve two words above buffer
| LDW *${CTXA}[0],$A ; load ctx
| || LDW *${CTXB}[4],$E
| LDW *${CTXA}[1],$B
| || LDW *${CTXB}[5],$F
| LDW *${CTXA}[2],$C
| || LDW *${CTXB}[6],$G
| LDW *${CTXA}[3],$D
| || LDW *${CTXB}[7],$H
|
| LDNW *$INP++,$Xn ; pre-fetch input
| LDW *$K256++,$K ; pre-fetch K256[0]
| MVK 14,B0 ; loop counters
| MVK 47,B1
| || ADDAW $Xia,9,$Xia
| outerloop?:
| SUB A0,1,A0
| || MV $A,$Actx
| || MV $E,$Ectx
| || MVD $B,$Bctx
| || MVD $F,$Fctx
| MV $C,$Cctx
| || MV $G,$Gctx
| || MVD $D,$Dctx
| || MVD $H,$Hctx
| || SWAP4 $Xn,$X0
|
| SPLOOPD 8 ; BODY_00_14
| || MVC B0,ILC
| || SWAP2 $X0,$X0
|
| LDNW *$INP++,$Xn
| || ROTL $A,30,$S0
| || OR $A,$B,$Maj
| || AND $A,$B,$t2a
| || ROTL $E,26,$S1
| || AND $F,$E,$Ch
| || ANDN $G,$E,$t2e
| ROTL $A,19,$t0a
| || AND $C,$Maj,$Maj
| || ROTL $E,21,$t0e
| || XOR $t2e,$Ch,$Ch ; Ch(e,f,g) = (e&f)^(~e&g)
| ROTL $A,10,$t1a
| || OR $t2a,$Maj,$Maj ; Maj(a,b,c) = ((a|b)&c)|(a&b)
| || ROTL $E,7,$t1e
| || ADD $K,$H,$T1 ; T1 = h + K256[i]
| ADD $X0,$T1,$T1 ; T1 += X[i];
| || STW $X0,*$Xib++
| || XOR $t0a,$S0,$S0
| || XOR $t0e,$S1,$S1
| XOR $t1a,$S0,$S0 ; Sigma0(a)
| || XOR $t1e,$S1,$S1 ; Sigma1(e)
| || LDW *$K256++,$K ; pre-fetch K256[i+1]
| || ADD $Ch,$T1,$T1 ; T1 += Ch(e,f,g)
| ADD $S1,$T1,$T1 ; T1 += Sigma1(e)
| || ADD $S0,$Maj,$T2 ; T2 = Sigma0(a) + Maj(a,b,c)
| || ROTL $G,0,$H ; h = g
| || MV $F,$G ; g = f
| || MV $X0,$X14
| || SWAP4 $Xn,$X0
| SWAP2 $X0,$X0
| || MV $E,$F ; f = e
| || ADD $D,$T1,$E ; e = d + T1
| || MV $C,$D ; d = c
| MV $B,$C ; c = b
| || MV $A,$B ; b = a
| || ADD $T1,$T2,$A ; a = T1 + T2
| SPKERNEL
|
| ROTL $A,30,$S0 ; BODY_15
| || OR $A,$B,$Maj
| || AND $A,$B,$t2a
| || ROTL $E,26,$S1
| || AND $F,$E,$Ch
| || ANDN $G,$E,$t2e
| || LDW *${Xib}[1],$Xn ; modulo-scheduled
| ROTL $A,19,$t0a
| || AND $C,$Maj,$Maj
| || ROTL $E,21,$t0e
| || XOR $t2e,$Ch,$Ch ; Ch(e,f,g) = (e&f)^(~e&g)
| || LDW *${Xib}[2],$X1 ; modulo-scheduled
| ROTL $A,10,$t1a
| || OR $t2a,$Maj,$Maj ; Maj(a,b,c) = ((a|b)&c)|(a&b)
| || ROTL $E,7,$t1e
| || ADD $K,$H,$T1 ; T1 = h + K256[i]
| ADD $X0,$T1,$T1 ; T1 += X[i];
| || STW $X0,*$Xib++
| || XOR $t0a,$S0,$S0
| || XOR $t0e,$S1,$S1
| XOR $t1a,$S0,$S0 ; Sigma0(a)
| || XOR $t1e,$S1,$S1 ; Sigma1(e)
| || LDW *$K256++,$K ; pre-fetch K256[i+1]
| || ADD $Ch,$T1,$T1 ; T1 += Ch(e,f,g)
| ADD $S1,$T1,$T1 ; T1 += Sigma1(e)
| || ADD $S0,$Maj,$T2 ; T2 = Sigma0(a) + Maj(a,b,c)
| || ROTL $G,0,$H ; h = g
| || MV $F,$G ; g = f
| || MV $X0,$X15
| MV $E,$F ; f = e
| || ADD $D,$T1,$E ; e = d + T1
| || MV $C,$D ; d = c
| || MV $Xn,$X0 ; modulo-scheduled
| || LDW *$Xia,$X9 ; modulo-scheduled
| || ROTL $X1,25,$t0e ; modulo-scheduled
| || ROTL $X14,15,$t0a ; modulo-scheduled
| SHRU $X1,3,$s0 ; modulo-scheduled
| || SHRU $X14,10,$s1 ; modulo-scheduled
| || ROTL $B,0,$C ; c = b
| || MV $A,$B ; b = a
| || ADD $T1,$T2,$A ; a = T1 + T2
|
| SPLOOPD 10 ; BODY_16_63
| || MVC B1,ILC
| || ROTL $X1,14,$t1e ; modulo-scheduled
| || ROTL $X14,13,$t1a ; modulo-scheduled
|
| XOR $t0e,$s0,$s0
| || XOR $t0a,$s1,$s1
| || MV $X15,$X14
| || MV $X1,$Xn
| XOR $t1e,$s0,$s0 ; sigma0(X[i+1])
| || XOR $t1a,$s1,$s1 ; sigma1(X[i+14])
| || LDW *${Xib}[2],$X1 ; module-scheduled
| ROTL $A,30,$S0
| || OR $A,$B,$Maj
| || AND $A,$B,$t2a
| || ROTL $E,26,$S1
| || AND $F,$E,$Ch
| || ANDN $G,$E,$t2e
| || ADD $X9,$X0,$X0 ; X[i] += X[i+9]
| ROTL $A,19,$t0a
| || AND $C,$Maj,$Maj
| || ROTL $E,21,$t0e
| || XOR $t2e,$Ch,$Ch ; Ch(e,f,g) = (e&f)^(~e&g)
| || ADD $s0,$X0,$X0 ; X[i] += sigma1(X[i+1])
| ROTL $A,10,$t1a
| || OR $t2a,$Maj,$Maj ; Maj(a,b,c) = ((a|b)&c)|(a&b)
| || ROTL $E,7,$t1e
| || ADD $H,$K,$T1 ; T1 = h + K256[i]
| || ADD $s1,$X0,$X0 ; X[i] += sigma1(X[i+14])
| XOR $t0a,$S0,$S0
| || XOR $t0e,$S1,$S1
| || ADD $X0,$T1,$T1 ; T1 += X[i]
| || STW $X0,*$Xib++
| XOR $t1a,$S0,$S0 ; Sigma0(a)
| || XOR $t1e,$S1,$S1 ; Sigma1(e)
| || ADD $Ch,$T1,$T1 ; T1 += Ch(e,f,g)
| || MV $X0,$X15
| || ROTL $G,0,$H ; h = g
| || LDW *$K256++,$K ; pre-fetch K256[i+1]
| ADD $S1,$T1,$T1 ; T1 += Sigma1(e)
| || ADD $S0,$Maj,$T2 ; T2 = Sigma0(a) + Maj(a,b,c)
| || MV $F,$G ; g = f
| || MV $Xn,$X0 ; modulo-scheduled
| || LDW *++$Xia,$X9 ; modulo-scheduled
| || ROTL $X1,25,$t0e ; module-scheduled
| || ROTL $X14,15,$t0a ; modulo-scheduled
| ROTL $X1,14,$t1e ; modulo-scheduled
| || ROTL $X14,13,$t1a ; modulo-scheduled
| || MV $E,$F ; f = e
| || ADD $D,$T1,$E ; e = d + T1
| || MV $C,$D ; d = c
| || MV $B,$C ; c = b
| MV $A,$B ; b = a
| || ADD $T1,$T2,$A ; a = T1 + T2
| || SHRU $X1,3,$s0 ; modulo-scheduled
| || SHRU $X14,10,$s1 ; modulo-scheduled
| SPKERNEL
|
| [A0] B outerloop?
| || [A0] LDNW *$INP++,$Xn ; pre-fetch input
| || [A0] ADDK -260,$K256 ; rewind K256
| || ADD $Actx,$A,$A ; accumulate ctx
| || ADD $Ectx,$E,$E
| || ADD $Bctx,$B,$B
| ADD $Fctx,$F,$F
| || ADD $Cctx,$C,$C
| || ADD $Gctx,$G,$G
| || ADD $Dctx,$D,$D
| || ADD $Hctx,$H,$H
| || [A0] LDW *$K256++,$K ; pre-fetch K256[0]
|
| [!A0] BNOP RA
| ||[!A0] MV $CTXA,$CTXB
| [!A0] MV FP,SP ; restore stack pointer
| ||[!A0] LDW *FP[0],FP ; restore frame pointer
| [!A0] STW $A,*${CTXA}[0] ; save ctx
| ||[!A0] STW $E,*${CTXB}[4]
| ||[!A0] MVK 0,B0
| [!A0] STW $B,*${CTXA}[1]
| ||[!A0] STW $F,*${CTXB}[5]
| ||[!A0] MVC B0,AMR ; clear AMR
| STW $C,*${CTXA}[2]
| || STW $G,*${CTXB}[6]
| STW $D,*${CTXA}[3]
| || STW $H,*${CTXB}[7]
| .endasmfunc
|
| .if __TI_EABI__
| .sect ".text:sha_asm.const"
| .else
| .sect ".const:sha_asm"
| .endif
| .align 128
| K256:
| .uword 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5
| .uword 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5
| .uword 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3
| .uword 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174
| .uword 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc
| .uword 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da
| .uword 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7
| .uword 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967
| .uword 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13
| .uword 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85
| .uword 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3
| .uword 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070
| .uword 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5
| .uword 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3
| .uword 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208
| .uword 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
| .cstring "SHA256 block transform for C64x+, CRYPTOGAMS by <appro\@openssl.org>"
| .align 4
|
| ___
|
| print $code;
| close STDOUT or die "error closing STDOUT: $!";
|
|
