+#!/usr/bin/env perl
+
+# ====================================================================
+# Written by Andy Polyakov <appro@fy.chalmers.se> 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/.
+# ====================================================================
+
+# SHA2 block procedures for MIPS.
+
+# October 2010.
+#
+# SHA256 performance improvement on MIPS R5000 CPU is ~27% over gcc-
+# generated code in o32 build and ~55% in n32/64 build. SHA512 [which
+# for now can only be compiled for MIPS64 ISA] improvement is modest
+# ~17%, but it comes for free, because it's same instruction sequence.
+# Improvement coefficients are for aligned input.
+
+######################################################################
+# There is a number of MIPS ABI in use, O32 and N32/64 are most
+# widely used. Then there is a new contender: NUBI. It appears that if
+# one picks the latter, it's possible to arrange code in ABI neutral
+# manner. Therefore let's stick to NUBI register layout:
+#
+($zero,$at,$t0,$t1,$t2)=map("\$$_",(0..2,24,25));
+($a0,$a1,$a2,$a3,$a4,$a5,$a6,$a7)=map("\$$_",(4..11));
+($s0,$s1,$s2,$s3,$s4,$s5,$s6,$s7,$s8,$s9,$s10,$s11)=map("\$$_",(12..23));
+($gp,$tp,$sp,$fp,$ra)=map("\$$_",(3,28..31));
+#
+# The return value is placed in $a0. Following coding rules facilitate
+# interoperability:
+#
+# - never ever touch $tp, "thread pointer", former $gp;
+# - copy return value to $t0, former $v0 [or to $a0 if you're adapting
+# old code];
+# - on O32 populate $a4-$a7 with 'lw $aN,4*N($sp)' if necessary;
+#
+# For reference here is register layout for N32/64 MIPS ABIs:
+#
+# ($zero,$at,$v0,$v1)=map("\$$_",(0..3));
+# ($a0,$a1,$a2,$a3,$a4,$a5,$a6,$a7)=map("\$$_",(4..11));
+# ($t0,$t1,$t2,$t3,$t8,$t9)=map("\$$_",(12..15,24,25));
+# ($s0,$s1,$s2,$s3,$s4,$s5,$s6,$s7)=map("\$$_",(16..23));
+# ($gp,$sp,$fp,$ra)=map("\$$_",(28..31));
+#
+$flavour = shift; # supported flavours are o32,n32,64,nubi32,nubi64
+
+if ($flavour =~ /64|n32/i) {
+ $PTR_ADD="dadd"; # incidentally works even on n32
+ $PTR_SUB="dsub"; # incidentally works even on n32
+ $REG_S="sd";
+ $REG_L="ld";
+ $PTR_SLL="dsll"; # incidentally works even on n32
+ $SZREG=8;
+} else {
+ $PTR_ADD="add";
+ $PTR_SUB="sub";
+ $REG_S="sw";
+ $REG_L="lw";
+ $PTR_SLL="sll";
+ $SZREG=4;
+}
+#
+# <appro@openssl.org>
+#
+######################################################################
+
+$output=shift;
+open STDOUT,">$output";
+
+if ($output =~ /512/) {
+ $label="512";
+ $SZ=8;
+ $LD="ld"; # load from memory
+ $ST="sd"; # store to memory
+ $SLL="dsll"; # shift left logical
+ $SRL="dsrl"; # shift right logical
+ $ADDU="daddu";
+ @Sigma0=(28,34,39);
+ @Sigma1=(14,18,41);
+ @sigma0=( 7, 1, 8); # right shift first
+ @sigma1=( 6,19,61); # right shift first
+ $lastK=0x817;
+ $rounds=80;
+} else {
+ $label="256";
+ $SZ=4;
+ $LD="lw"; # load from memory
+ $ST="sw"; # store to memory
+ $SLL="sll"; # shift left logical
+ $SRL="srl"; # shift right logical
+ $ADDU="addu";
+ @Sigma0=( 2,13,22);
+ @Sigma1=( 6,11,25);
+ @sigma0=( 3, 7,18); # right shift first
+ @sigma1=(10,17,19); # right shift first
+ $lastK=0x8f2;
+ $rounds=64;
+}
+
+@V=($A,$B,$C,$D,$E,$F,$G,$H)=map("\$$_",(1,2,3,7,24,25,30,31));
+@X=map("\$$_",(8..23));
+
+$ctx=$a0;
+$inp=$a1;
+$len=$a2; $Ktbl=$len;
+
+sub BODY_00_15 {
+my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
+my ($T1,$tmp0,$tmp1,$tmp2)=(@X[4],@X[5],@X[6],@X[7]);
+
+$code.=<<___ if ($i<15);
+ ${LD}l @X[1],`($i+1)*$SZ+$MSB`($inp)
+ ${LD}r @X[1],`($i+1)*$SZ+$LSB`($inp)
+___
+$code.=<<___ if ($little_endian && $i<16); # XXX no 64-bit byte swap yet
+ srl $tmp0,@X[0],24 # byte swap($i)
+ srl $tmp1,@X[0],8
+ andi $tmp2,@X[0],0xFF00
+ sll @X[0],@X[0],24
+ andi $tmp1,0xFF00
+ sll $tmp2,$tmp2,8
+ or @X[0],$tmp0
+ or $tmp1,$t2
+ or @X[0],$tmp1
+___
+$code.=<<___;
+ $ADDU $T1,$X[0],$h # $i
+ $SRL $h,$e,@Sigma1[0]
+ xor $tmp2,$f,$g
+ $SLL $tmp1,$e,`$SZ*8-@Sigma1[2]`
+ and $tmp2,$e
+ $SRL $tmp0,$e,@Sigma1[1]
+ xor $h,$tmp1
+ $SLL $tmp1,$e,`$SZ*8-@Sigma1[1]`
+ xor $h,$tmp0
+ $SRL $tmp0,$e,@Sigma1[2]
+ xor $h,$tmp1
+ $SLL $tmp1,$e,`$SZ*8-@Sigma1[0]`
+ xor $h,$tmp0
+ xor $tmp2,$g # Ch(e,f,g)
+ xor $tmp0,$tmp1,$h # Sigma1(e)
+
+ $SRL $h,$a,@Sigma0[0]
+ $ADDU $T1,$tmp2
+ $LD $tmp2,`$i*$SZ`($Ktbl) # K[$i]
+ $SLL $tmp1,$a,`$SZ*8-@Sigma0[2]`
+ $ADDU $T1,$tmp0
+ $SRL $tmp0,$a,@Sigma0[1]
+ xor $h,$tmp1
+ $SLL $tmp1,$a,`$SZ*8-@Sigma0[1]`
+ xor $h,$tmp0
+ $SRL $tmp0,$a,@Sigma0[2]
+ xor $h,$tmp1
+ $SLL $tmp1,$a,`$SZ*8-@Sigma0[0]`
+ xor $h,$tmp0
+ $ST @X[0],`($i%16)*$SZ`($sp)
+ xor $h,$tmp1 # Sigma0(a)
+
+ or $tmp0,$a,$b
+ and $tmp1,$a,$b
+ and $tmp0,$c
+ or $tmp1,$tmp0 # Maj(a,b,c)
+ $ADDU $T1,$tmp2 # +=K[$i]
+ $ADDU $h,$tmp1
+
+ $ADDU $d,$T1
+ $ADDU $h,$T1
+___
+$code.=<<___ if ($i>=13);
+ $LD @X[3],`(($i+3)%16)*$SZ`($sp) # prefetch
+___
+}
+
+sub BODY_16_XX {
+my $i=@_[0];
+my ($tmp0,$tmp1,$tmp2,$tmp3)=(@X[4],@X[5],@X[6],@X[7]);
+
+$code.=<<___;
+ $SRL $tmp2,@X[1],@sigma0[0] # Xupdate($i)
+ $ADDU @X[0],@X[9] # +=X[i+9]
+ $SLL $tmp1,@X[1],`$SZ*8-@sigma0[2]`
+ $SRL $tmp0,@X[1],@sigma0[1]
+ xor $tmp2,$tmp1
+ $SLL $tmp1,`@sigma0[2]-@sigma0[1]`
+ xor $tmp2,$tmp0
+ $SRL $tmp0,@X[1],@sigma0[2]
+ xor $tmp2,$tmp1
+
+ $SRL $tmp3,@X[14],@sigma1[0]
+ xor $tmp2,$tmp0 # sigma0(X[i+1])
+ $SLL $tmp1,@X[14],`$SZ*8-@sigma1[2]`
+ $ADDU @X[0],$tmp2
+ $SRL $tmp0,@X[14],@sigma1[1]
+ xor $tmp3,$tmp1
+ $SLL $tmp1,`@sigma1[2]-@sigma1[1]`
+ xor $tmp3,$tmp0
+ $SRL $tmp0,@X[14],@sigma1[2]
+ xor $tmp3,$tmp1
+
+ xor $tmp3,$tmp0 # sigma1(X[i+14])
+ $ADDU @X[0],$tmp3
+
+___
+ &BODY_00_15(@_);
+}
+
+$FRAMESIZE=16*$SZ+16*$SZREG;
+$SAVED_REGS_MASK = ($flavour =~ /nubi/i) ? 0xc0fff008 : 0xc0ff0000;
+$pf = ($flavour =~ /nubi/i) ? $t0 : $t2;
+$MSB = 0;
+$LSB = ($SZ-1)&~$MSB;
+
+$code.=<<___;
+.text
+.set noat
+.option pic2
+
+.align 5
+.globl sha${label}_block_data_order
+.ent sha${label}_block_data_order
+sha${label}_block_data_order:
+ .frame $sp,$FRAMESIZE,$ra
+ .mask $SAVED_REGS_MASK,-$SZREG
+ .set noreorder
+___
+$code.=<<___ if ($flavour =~ /o32/i); # o32 PIC-ification
+ .cpload $pf
+___
+$code.=<<___;
+ $PTR_SUB $sp,$FRAMESIZE
+ $REG_S $ra,$FRAMESIZE-1*$SZREG($sp)
+ $REG_S $fp,$FRAMESIZE-2*$SZREG($sp)
+ $REG_S $s11,$FRAMESIZE-3*$SZREG($sp)
+ $REG_S $s10,$FRAMESIZE-4*$SZREG($sp)
+ $REG_S $s9,$FRAMESIZE-5*$SZREG($sp)
+ $REG_S $s8,$FRAMESIZE-6*$SZREG($sp)
+ $REG_S $s7,$FRAMESIZE-7*$SZREG($sp)
+ $REG_S $s6,$FRAMESIZE-8*$SZREG($sp)
+ $REG_S $s5,$FRAMESIZE-9*$SZREG($sp)
+ $REG_S $s4,$FRAMESIZE-10*$SZREG($sp)
+___
+$code.=<<___ if ($flavour =~ /nubi/i); # optimize non-nubi prologue
+ $REG_S $s3,$FRAMESIZE-11*$SZREG($sp)
+ $REG_S $s2,$FRAMESIZE-12*$SZREG($sp)
+ $REG_S $s1,$FRAMESIZE-13*$SZREG($sp)
+ $REG_S $s0,$FRAMESIZE-14*$SZREG($sp)
+ $REG_S $gp,$FRAMESIZE-15*$SZREG($sp)
+___
+$code.=<<___;
+ $PTR_SLL @X[15],$len,`log(16*$SZ)/log(2)`
+___
+$code.=<<___ if ($flavour !~ /o32/i); # non-o32 PIC-ification
+ .cplocal $Ktbl
+ .cpsetup $pf,$zero,sha${label}_block_data_order
+___
+$code.=<<___;
+ .set reorder
+ la $Ktbl,K${label} # PIC-ified 'load address'
+
+ $LD $A,0*$SZ($ctx) # load context
+ $LD $B,1*$SZ($ctx)
+ $LD $C,2*$SZ($ctx)
+ $LD $D,3*$SZ($ctx)
+ $LD $E,4*$SZ($ctx)
+ $LD $F,5*$SZ($ctx)
+ $LD $G,6*$SZ($ctx)
+ $LD $H,7*$SZ($ctx)
+
+ $PTR_ADD @X[15],$inp # pointer to the end of input
+ $REG_S @X[15],16*$SZ($sp)
+ b .Loop
+
+.align 5
+.Loop:
+ ${LD}l @X[0],$MSB($inp)
+ ${LD}r @X[0],$LSB($inp)
+___
+for ($i=0;$i<16;$i++)
+{ &BODY_00_15($i,@V); unshift(@V,pop(@V)); push(@X,shift(@X)); }
+$code.=<<___;
+ b .L16_xx
+.align 4
+.L16_xx:
+___
+for (;$i<32;$i++)
+{ &BODY_16_XX($i,@V); unshift(@V,pop(@V)); push(@X,shift(@X)); }
+$code.=<<___;
+ and @X[6],0xfff
+ li @X[7],$lastK
+ $PTR_ADD $Ktbl,16*$SZ # Ktbl+=16
+ bne @X[6],@X[7],.L16_xx
+
+ $LD @X[0],0*$SZ($ctx)
+ $LD @X[1],1*$SZ($ctx)
+ $LD @X[2],2*$SZ($ctx)
+ $LD @X[3],3*$SZ($ctx)
+ $ADDU $A,@X[0]
+ $LD @X[4],4*$SZ($ctx)
+ $ADDU $B,@X[1]
+ $LD @X[5],5*$SZ($ctx)
+ $ADDU $C,@X[2]
+ $LD @X[6],6*$SZ($ctx)
+ $ADDU $D,@X[3]
+ $LD @X[7],7*$SZ($ctx)
+ $ADDU $E,@X[4]
+ $ST $A,0*$SZ($ctx)
+ $ADDU $F,@X[5]
+ $ST $B,1*$SZ($ctx)
+ $ADDU $G,@X[6]
+ $ST $C,2*$SZ($ctx)
+ $ADDU $H,@X[7]
+ $ST $D,3*$SZ($ctx)
+ $PTR_ADD $inp,16*$SZ
+ $ST $E,4*$SZ($ctx)
+ $REG_L @X[15],16*$SZ($sp) # restore pointer to the end of input
+ $ST $F,5*$SZ($ctx)
+ $ST $G,6*$SZ($ctx)
+ $ST $H,7*$SZ($ctx)
+
+ $PTR_SUB $Ktbl,`($rounds-16)*$SZ` # rewind $Ktbl
+ bne $inp,@X[15],.Loop
+
+ .set noreorder
+ $REG_L $ra,$FRAMESIZE-1*$SZREG($sp)
+ $REG_L $fp,$FRAMESIZE-2*$SZREG($sp)
+ $REG_L $s11,$FRAMESIZE-3*$SZREG($sp)
+ $REG_L $s10,$FRAMESIZE-4*$SZREG($sp)
+ $REG_L $s9,$FRAMESIZE-5*$SZREG($sp)
+ $REG_L $s8,$FRAMESIZE-6*$SZREG($sp)
+ $REG_L $s7,$FRAMESIZE-7*$SZREG($sp)
+ $REG_L $s6,$FRAMESIZE-8*$SZREG($sp)
+ $REG_L $s5,$FRAMESIZE-9*$SZREG($sp)
+ $REG_L $s4,$FRAMESIZE-10*$SZREG($sp)
+___
+$code.=<<___ if ($flavour =~ /nubi/i);
+ $REG_L $s3,$FRAMESIZE-11*$SZREG($sp)
+ $REG_L $s2,$FRAMESIZE-12*$SZREG($sp)
+ $REG_L $s1,$FRAMESIZE-13*$SZREG($sp)
+ $REG_L $s0,$FRAMESIZE-14*$SZREG($sp)
+ $REG_L $gp,$FRAMESIZE-15*$SZREG($sp)
+___
+$code.=<<___;
+ jr $ra
+ $PTR_ADD $sp,$FRAMESIZE
+.end sha${label}_block_data_order
+
+.rdata
+.align 5
+K${label}:
+___
+if ($SZ==4) {
+$code.=<<___;
+ .word 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5
+ .word 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5
+ .word 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3
+ .word 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174
+ .word 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc
+ .word 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da
+ .word 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7
+ .word 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967
+ .word 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13
+ .word 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85
+ .word 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3
+ .word 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070
+ .word 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5
+ .word 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3
+ .word 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208
+ .word 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
+___
+} else {
+$code.=<<___;
+ .dword 0x428a2f98d728ae22, 0x7137449123ef65cd
+ .dword 0xb5c0fbcfec4d3b2f, 0xe9b5dba58189dbbc
+ .dword 0x3956c25bf348b538, 0x59f111f1b605d019
+ .dword 0x923f82a4af194f9b, 0xab1c5ed5da6d8118
+ .dword 0xd807aa98a3030242, 0x12835b0145706fbe
+ .dword 0x243185be4ee4b28c, 0x550c7dc3d5ffb4e2
+ .dword 0x72be5d74f27b896f, 0x80deb1fe3b1696b1
+ .dword 0x9bdc06a725c71235, 0xc19bf174cf692694
+ .dword 0xe49b69c19ef14ad2, 0xefbe4786384f25e3
+ .dword 0x0fc19dc68b8cd5b5, 0x240ca1cc77ac9c65
+ .dword 0x2de92c6f592b0275, 0x4a7484aa6ea6e483
+ .dword 0x5cb0a9dcbd41fbd4, 0x76f988da831153b5
+ .dword 0x983e5152ee66dfab, 0xa831c66d2db43210
+ .dword 0xb00327c898fb213f, 0xbf597fc7beef0ee4
+ .dword 0xc6e00bf33da88fc2, 0xd5a79147930aa725
+ .dword 0x06ca6351e003826f, 0x142929670a0e6e70
+ .dword 0x27b70a8546d22ffc, 0x2e1b21385c26c926
+ .dword 0x4d2c6dfc5ac42aed, 0x53380d139d95b3df
+ .dword 0x650a73548baf63de, 0x766a0abb3c77b2a8
+ .dword 0x81c2c92e47edaee6, 0x92722c851482353b
+ .dword 0xa2bfe8a14cf10364, 0xa81a664bbc423001
+ .dword 0xc24b8b70d0f89791, 0xc76c51a30654be30
+ .dword 0xd192e819d6ef5218, 0xd69906245565a910
+ .dword 0xf40e35855771202a, 0x106aa07032bbd1b8
+ .dword 0x19a4c116b8d2d0c8, 0x1e376c085141ab53
+ .dword 0x2748774cdf8eeb99, 0x34b0bcb5e19b48a8
+ .dword 0x391c0cb3c5c95a63, 0x4ed8aa4ae3418acb
+ .dword 0x5b9cca4f7763e373, 0x682e6ff3d6b2b8a3
+ .dword 0x748f82ee5defb2fc, 0x78a5636f43172f60
+ .dword 0x84c87814a1f0ab72, 0x8cc702081a6439ec
+ .dword 0x90befffa23631e28, 0xa4506cebde82bde9
+ .dword 0xbef9a3f7b2c67915, 0xc67178f2e372532b
+ .dword 0xca273eceea26619c, 0xd186b8c721c0c207
+ .dword 0xeada7dd6cde0eb1e, 0xf57d4f7fee6ed178
+ .dword 0x06f067aa72176fba, 0x0a637dc5a2c898a6
+ .dword 0x113f9804bef90dae, 0x1b710b35131c471b
+ .dword 0x28db77f523047d84, 0x32caab7b40c72493
+ .dword 0x3c9ebe0a15c9bebc, 0x431d67c49c100d4c
+ .dword 0x4cc5d4becb3e42b6, 0x597f299cfc657e2a
+ .dword 0x5fcb6fab3ad6faec, 0x6c44198c4a475817
+___
+}
+$code.=<<___;
+.asciiz "SHA${label} for MIPS, CRYPTOGAMS by <appro\@openssl.org>"
+.align 5
+
+___
+
+$code =~ s/\`([^\`]*)\`/eval $1/gem;
+print $code;
+close STDOUT;
projects / openssl.git / commitdiff