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-rw-r--r--openssl/crypto/sha/asm/sha1-mips.pl354
1 files changed, 354 insertions, 0 deletions
diff --git a/openssl/crypto/sha/asm/sha1-mips.pl b/openssl/crypto/sha/asm/sha1-mips.pl
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index 000000000..f1a702f38
--- /dev/null
+++ b/openssl/crypto/sha/asm/sha1-mips.pl
@@ -0,0 +1,354 @@
+#!/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/.
+# ====================================================================
+
+# SHA1 block procedure for MIPS.
+
+# Performance improvement is 30% on unaligned input. The "secret" is
+# to deploy lwl/lwr pair to load unaligned input. One could have
+# vectorized Xupdate on MIPSIII/IV, but the goal was to code MIPS32-
+# compatible subroutine. There is room for minor optimization on
+# little-endian platforms...
+
+######################################################################
+# 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";
+ $SZREG=4;
+}
+#
+# <appro@openssl.org>
+#
+######################################################################
+
+$big_endian=(`echo MIPSEL | $ENV{CC} -E -P -`=~/MIPSEL/)?1:0;
+
+for (@ARGV) { $output=$_ if (/^\w[\w\-]*\.\w+$/); }
+open STDOUT,">$output";
+
+if (!defined($big_endian))
+ { $big_endian=(unpack('L',pack('N',1))==1); }
+
+# offsets of the Most and Least Significant Bytes
+$MSB=$big_endian?0:3;
+$LSB=3&~$MSB;
+
+@X=map("\$$_",(8..23)); # a4-a7,s0-s11
+
+$ctx=$a0;
+$inp=$a1;
+$num=$a2;
+$A="\$1";
+$B="\$2";
+$C="\$3";
+$D="\$7";
+$E="\$24"; @V=($A,$B,$C,$D,$E);
+$t0="\$25";
+$t1=$num; # $num is offloaded to stack
+$t2="\$30"; # fp
+$K="\$31"; # ra
+
+sub BODY_00_14 {
+my ($i,$a,$b,$c,$d,$e)=@_;
+my $j=$i+1;
+$code.=<<___ if (!$big_endian);
+ srl $t0,@X[$i],24 # byte swap($i)
+ srl $t1,@X[$i],8
+ andi $t2,@X[$i],0xFF00
+ sll @X[$i],@X[$i],24
+ andi $t1,0xFF00
+ sll $t2,$t2,8
+ or @X[$i],$t0
+ or $t1,$t2
+ or @X[$i],$t1
+___
+$code.=<<___;
+ lwl @X[$j],$j*4+$MSB($inp)
+ sll $t0,$a,5 # $i
+ addu $e,$K
+ lwr @X[$j],$j*4+$LSB($inp)
+ srl $t1,$a,27
+ addu $e,$t0
+ xor $t0,$c,$d
+ addu $e,$t1
+ sll $t2,$b,30
+ and $t0,$b
+ srl $b,$b,2
+ xor $t0,$d
+ addu $e,@X[$i]
+ or $b,$t2
+ addu $e,$t0
+___
+}
+
+sub BODY_15_19 {
+my ($i,$a,$b,$c,$d,$e)=@_;
+my $j=$i+1;
+
+$code.=<<___ if (!$big_endian && $i==15);
+ srl $t0,@X[$i],24 # byte swap($i)
+ srl $t1,@X[$i],8
+ andi $t2,@X[$i],0xFF00
+ sll @X[$i],@X[$i],24
+ andi $t1,0xFF00
+ sll $t2,$t2,8
+ or @X[$i],$t0
+ or @X[$i],$t1
+ or @X[$i],$t2
+___
+$code.=<<___;
+ xor @X[$j%16],@X[($j+2)%16]
+ sll $t0,$a,5 # $i
+ addu $e,$K
+ srl $t1,$a,27
+ addu $e,$t0
+ xor @X[$j%16],@X[($j+8)%16]
+ xor $t0,$c,$d
+ addu $e,$t1
+ xor @X[$j%16],@X[($j+13)%16]
+ sll $t2,$b,30
+ and $t0,$b
+ srl $t1,@X[$j%16],31
+ addu @X[$j%16],@X[$j%16]
+ srl $b,$b,2
+ xor $t0,$d
+ or @X[$j%16],$t1
+ addu $e,@X[$i%16]
+ or $b,$t2
+ addu $e,$t0
+___
+}
+
+sub BODY_20_39 {
+my ($i,$a,$b,$c,$d,$e)=@_;
+my $j=$i+1;
+$code.=<<___ if ($i<79);
+ xor @X[$j%16],@X[($j+2)%16]
+ sll $t0,$a,5 # $i
+ addu $e,$K
+ srl $t1,$a,27
+ addu $e,$t0
+ xor @X[$j%16],@X[($j+8)%16]
+ xor $t0,$c,$d
+ addu $e,$t1
+ xor @X[$j%16],@X[($j+13)%16]
+ sll $t2,$b,30
+ xor $t0,$b
+ srl $t1,@X[$j%16],31
+ addu @X[$j%16],@X[$j%16]
+ srl $b,$b,2
+ addu $e,@X[$i%16]
+ or @X[$j%16],$t1
+ or $b,$t2
+ addu $e,$t0
+___
+$code.=<<___ if ($i==79);
+ lw @X[0],0($ctx)
+ sll $t0,$a,5 # $i
+ addu $e,$K
+ lw @X[1],4($ctx)
+ srl $t1,$a,27
+ addu $e,$t0
+ lw @X[2],8($ctx)
+ xor $t0,$c,$d
+ addu $e,$t1
+ lw @X[3],12($ctx)
+ sll $t2,$b,30
+ xor $t0,$b
+ lw @X[4],16($ctx)
+ srl $b,$b,2
+ addu $e,@X[$i%16]
+ or $b,$t2
+ addu $e,$t0
+___
+}
+
+sub BODY_40_59 {
+my ($i,$a,$b,$c,$d,$e)=@_;
+my $j=$i+1;
+$code.=<<___ if ($i<79);
+ xor @X[$j%16],@X[($j+2)%16]
+ sll $t0,$a,5 # $i
+ addu $e,$K
+ srl $t1,$a,27
+ addu $e,$t0
+ xor @X[$j%16],@X[($j+8)%16]
+ and $t0,$c,$d
+ addu $e,$t1
+ xor @X[$j%16],@X[($j+13)%16]
+ sll $t2,$b,30
+ addu $e,$t0
+ srl $t1,@X[$j%16],31
+ xor $t0,$c,$d
+ addu @X[$j%16],@X[$j%16]
+ and $t0,$b
+ srl $b,$b,2
+ or @X[$j%16],$t1
+ addu $e,@X[$i%16]
+ or $b,$t2
+ addu $e,$t0
+___
+}
+
+$FRAMESIZE=16; # large enough to accomodate NUBI saved registers
+$SAVED_REGS_MASK = ($flavour =~ /nubi/i) ? 0xc0fff008 : 0xc0ff0000;
+
+$code=<<___;
+#ifdef OPENSSL_FIPSCANISTER
+# include <openssl/fipssyms.h>
+#endif
+
+.text
+
+.set noat
+.set noreorder
+.align 5
+.globl sha1_block_data_order
+.ent sha1_block_data_order
+sha1_block_data_order:
+ .frame $sp,$FRAMESIZE*$SZREG,$ra
+ .mask $SAVED_REGS_MASK,-$SZREG
+ .set noreorder
+ $PTR_SUB $sp,$FRAMESIZE*$SZREG
+ $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 $num,6
+ $PTR_ADD $num,$inp
+ $REG_S $num,0($sp)
+ lw $A,0($ctx)
+ lw $B,4($ctx)
+ lw $C,8($ctx)
+ lw $D,12($ctx)
+ b .Loop
+ lw $E,16($ctx)
+.align 4
+.Loop:
+ .set reorder
+ lwl @X[0],$MSB($inp)
+ lui $K,0x5a82
+ lwr @X[0],$LSB($inp)
+ ori $K,0x7999 # K_00_19
+___
+for ($i=0;$i<15;$i++) { &BODY_00_14($i,@V); unshift(@V,pop(@V)); }
+for (;$i<20;$i++) { &BODY_15_19($i,@V); unshift(@V,pop(@V)); }
+$code.=<<___;
+ lui $K,0x6ed9
+ ori $K,0xeba1 # K_20_39
+___
+for (;$i<40;$i++) { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
+$code.=<<___;
+ lui $K,0x8f1b
+ ori $K,0xbcdc # K_40_59
+___
+for (;$i<60;$i++) { &BODY_40_59($i,@V); unshift(@V,pop(@V)); }
+$code.=<<___;
+ lui $K,0xca62
+ ori $K,0xc1d6 # K_60_79
+___
+for (;$i<80;$i++) { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
+$code.=<<___;
+ $PTR_ADD $inp,64
+ $REG_L $num,0($sp)
+
+ addu $A,$X[0]
+ addu $B,$X[1]
+ sw $A,0($ctx)
+ addu $C,$X[2]
+ addu $D,$X[3]
+ sw $B,4($ctx)
+ addu $E,$X[4]
+ sw $C,8($ctx)
+ sw $D,12($ctx)
+ sw $E,16($ctx)
+ .set noreorder
+ bne $inp,$num,.Loop
+ nop
+
+ .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*$SZREG
+.end sha1_block_data_order
+.rdata
+.asciiz "SHA1 for MIPS, CRYPTOGAMS by <appro\@openssl.org>"
+___
+print $code;
+close STDOUT;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 15:01:58 +0000