diff options
Diffstat (limited to 'openssl/crypto/sha/asm/sha1-armv4-large.pl')
| -rw-r--r-- | openssl/crypto/sha/asm/sha1-armv4-large.pl | 451 |
1 files changed, 443 insertions, 8 deletions
diff --git a/openssl/crypto/sha/asm/sha1-armv4-large.pl b/openssl/crypto/sha/asm/sha1-armv4-large.pl index 33da3e0e3..b2c30322c 100644 --- a/openssl/crypto/sha/asm/sha1-armv4-large.pl +++ b/openssl/crypto/sha/asm/sha1-armv4-large.pl @@ -1,7 +1,7 @@ #!/usr/bin/env perl # ==================================================================== -# Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL +# 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/. @@ -52,6 +52,20 @@ # Profiler-assisted and platform-specific optimization resulted in 10% # improvement on Cortex A8 core and 12.2 cycles per byte. +# September 2013. +# +# Add NEON implementation (see sha1-586.pl for background info). On +# Cortex A8 it was measured to process one byte in 6.7 cycles or >80% +# faster than integer-only code. Because [fully unrolled] NEON code +# is ~2.5x larger and there are some redundant instructions executed +# when processing last block, improvement is not as big for smallest +# blocks, only ~30%. Snapdragon S4 is a tad faster, 6.4 cycles per +# byte, which is also >80% faster than integer-only code. + +# May 2014. +# +# Add ARMv8 code path performing at 2.35 cpb on Apple A7. + while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {} open STDOUT,">$output"; @@ -153,12 +167,22 @@ $code=<<___; #include "arm_arch.h" .text +.code 32 .global sha1_block_data_order .type sha1_block_data_order,%function -.align 2 +.align 5 sha1_block_data_order: +#if __ARM_MAX_ARCH__>=7 + sub r3,pc,#8 @ sha1_block_data_order + ldr r12,.LOPENSSL_armcap + ldr r12,[r3,r12] @ OPENSSL_armcap_P + tst r12,#ARMV8_SHA1 + bne .LARMv8 + tst r12,#ARMV7_NEON + bne .LNEON +#endif stmdb sp!,{r4-r12,lr} add $len,$inp,$len,lsl#6 @ $len to point at the end of $inp ldmia $ctx,{$a,$b,$c,$d,$e} @@ -233,16 +257,427 @@ $code.=<<___; moveq pc,lr @ be binary compatible with V4, yet bx lr @ interoperable with Thumb ISA:-) #endif -.align 2 +.size sha1_block_data_order,.-sha1_block_data_order + +.align 5 .LK_00_19: .word 0x5a827999 .LK_20_39: .word 0x6ed9eba1 .LK_40_59: .word 0x8f1bbcdc .LK_60_79: .word 0xca62c1d6 -.size sha1_block_data_order,.-sha1_block_data_order -.asciz "SHA1 block transform for ARMv4, CRYPTOGAMS by <appro\@openssl.org>" -.align 2 +#if __ARM_MAX_ARCH__>=7 +.LOPENSSL_armcap: +.word OPENSSL_armcap_P-sha1_block_data_order +#endif +.asciz "SHA1 block transform for ARMv4/NEON/ARMv8, CRYPTOGAMS by <appro\@openssl.org>" +.align 5 +___ +##################################################################### +# NEON stuff +# +{{{ +my @V=($a,$b,$c,$d,$e); +my ($K_XX_XX,$Ki,$t0,$t1,$Xfer,$saved_sp)=map("r$_",(8..12,14)); +my $Xi=4; +my @X=map("q$_",(8..11,0..3)); +my @Tx=("q12","q13"); +my ($K,$zero)=("q14","q15"); +my $j=0; + +sub AUTOLOAD() # thunk [simplified] x86-style perlasm +{ my $opcode = $AUTOLOAD; $opcode =~ s/.*:://; $opcode =~ s/_/\./; + my $arg = pop; + $arg = "#$arg" if ($arg*1 eq $arg); + $code .= "\t$opcode\t".join(',',@_,$arg)."\n"; +} + +sub body_00_19 () { + ( + '($a,$b,$c,$d,$e)=@V;'. # '$code.="@ $j\n";'. + '&bic ($t0,$d,$b)', + '&add ($e,$e,$Ki)', # e+=X[i]+K + '&and ($t1,$c,$b)', + '&ldr ($Ki,sprintf "[sp,#%d]",4*(($j+1)&15))', + '&add ($e,$e,$a,"ror#27")', # e+=ROR(A,27) + '&eor ($t1,$t1,$t0)', # F_00_19 + '&mov ($b,$b,"ror#2")', # b=ROR(b,2) + '&add ($e,$e,$t1);'. # e+=F_00_19 + '$j++; unshift(@V,pop(@V));' + ) +} +sub body_20_39 () { + ( + '($a,$b,$c,$d,$e)=@V;'. # '$code.="@ $j\n";'. + '&eor ($t0,$b,$d)', + '&add ($e,$e,$Ki)', # e+=X[i]+K + '&ldr ($Ki,sprintf "[sp,#%d]",4*(($j+1)&15)) if ($j<79)', + '&eor ($t1,$t0,$c)', # F_20_39 + '&add ($e,$e,$a,"ror#27")', # e+=ROR(A,27) + '&mov ($b,$b,"ror#2")', # b=ROR(b,2) + '&add ($e,$e,$t1);'. # e+=F_20_39 + '$j++; unshift(@V,pop(@V));' + ) +} +sub body_40_59 () { + ( + '($a,$b,$c,$d,$e)=@V;'. # '$code.="@ $j\n";'. + '&add ($e,$e,$Ki)', # e+=X[i]+K + '&and ($t0,$c,$d)', + '&ldr ($Ki,sprintf "[sp,#%d]",4*(($j+1)&15))', + '&add ($e,$e,$a,"ror#27")', # e+=ROR(A,27) + '&eor ($t1,$c,$d)', + '&add ($e,$e,$t0)', + '&and ($t1,$t1,$b)', + '&mov ($b,$b,"ror#2")', # b=ROR(b,2) + '&add ($e,$e,$t1);'. # e+=F_40_59 + '$j++; unshift(@V,pop(@V));' + ) +} + +sub Xupdate_16_31 () +{ use integer; + my $body = shift; + my @insns = (&$body,&$body,&$body,&$body); + my ($a,$b,$c,$d,$e); + + &vext_8 (@X[0],@X[-4&7],@X[-3&7],8); # compose "X[-14]" in "X[0]" + eval(shift(@insns)); + eval(shift(@insns)); + eval(shift(@insns)); + &vadd_i32 (@Tx[1],@X[-1&7],$K); + eval(shift(@insns)); + &vld1_32 ("{$K\[]}","[$K_XX_XX,:32]!") if ($Xi%5==0); + eval(shift(@insns)); + &vext_8 (@Tx[0],@X[-1&7],$zero,4); # "X[-3]", 3 words + eval(shift(@insns)); + eval(shift(@insns)); + eval(shift(@insns)); + &veor (@X[0],@X[0],@X[-4&7]); # "X[0]"^="X[-16]" + eval(shift(@insns)); + eval(shift(@insns)); + &veor (@Tx[0],@Tx[0],@X[-2&7]); # "X[-3]"^"X[-8]" + eval(shift(@insns)); + eval(shift(@insns)); + &veor (@Tx[0],@Tx[0],@X[0]); # "X[0]"^="X[-3]"^"X[-8] + eval(shift(@insns)); + eval(shift(@insns)); + &vst1_32 ("{@Tx[1]}","[$Xfer,:128]!"); # X[]+K xfer + &sub ($Xfer,$Xfer,64) if ($Xi%4==0); + eval(shift(@insns)); + eval(shift(@insns)); + &vext_8 (@Tx[1],$zero,@Tx[0],4); # "X[0]"<<96, extract one dword + eval(shift(@insns)); + eval(shift(@insns)); + &vadd_i32 (@X[0],@Tx[0],@Tx[0]); + eval(shift(@insns)); + eval(shift(@insns)); + &vsri_32 (@X[0],@Tx[0],31); # "X[0]"<<<=1 + eval(shift(@insns)); + eval(shift(@insns)); + eval(shift(@insns)); + &vshr_u32 (@Tx[0],@Tx[1],30); + eval(shift(@insns)); + eval(shift(@insns)); + &vshl_u32 (@Tx[1],@Tx[1],2); + eval(shift(@insns)); + eval(shift(@insns)); + &veor (@X[0],@X[0],@Tx[0]); + eval(shift(@insns)); + eval(shift(@insns)); + &veor (@X[0],@X[0],@Tx[1]); # "X[0]"^=("X[0]">>96)<<<2 + + foreach (@insns) { eval; } # remaining instructions [if any] + + $Xi++; push(@X,shift(@X)); # "rotate" X[] +} + +sub Xupdate_32_79 () +{ use integer; + my $body = shift; + my @insns = (&$body,&$body,&$body,&$body); + my ($a,$b,$c,$d,$e); + + &vext_8 (@Tx[0],@X[-2&7],@X[-1&7],8); # compose "X[-6]" + eval(shift(@insns)); + eval(shift(@insns)); + eval(shift(@insns)); + &veor (@X[0],@X[0],@X[-4&7]); # "X[0]"="X[-32]"^"X[-16]" + eval(shift(@insns)); + eval(shift(@insns)); + &veor (@X[0],@X[0],@X[-7&7]); # "X[0]"^="X[-28]" + eval(shift(@insns)); + eval(shift(@insns)); + &vadd_i32 (@Tx[1],@X[-1&7],$K); + eval(shift(@insns)); + &vld1_32 ("{$K\[]}","[$K_XX_XX,:32]!") if ($Xi%5==0); + eval(shift(@insns)); + &veor (@Tx[0],@Tx[0],@X[0]); # "X[-6]"^="X[0]" + eval(shift(@insns)); + eval(shift(@insns)); + &vshr_u32 (@X[0],@Tx[0],30); + eval(shift(@insns)); + eval(shift(@insns)); + &vst1_32 ("{@Tx[1]}","[$Xfer,:128]!"); # X[]+K xfer + &sub ($Xfer,$Xfer,64) if ($Xi%4==0); + eval(shift(@insns)); + eval(shift(@insns)); + &vsli_32 (@X[0],@Tx[0],2); # "X[0]"="X[-6]"<<<2 + + foreach (@insns) { eval; } # remaining instructions [if any] + + $Xi++; push(@X,shift(@X)); # "rotate" X[] +} + +sub Xuplast_80 () +{ use integer; + my $body = shift; + my @insns = (&$body,&$body,&$body,&$body); + my ($a,$b,$c,$d,$e); + + &vadd_i32 (@Tx[1],@X[-1&7],$K); + eval(shift(@insns)); + eval(shift(@insns)); + &vst1_32 ("{@Tx[1]}","[$Xfer,:128]!"); + &sub ($Xfer,$Xfer,64); + + &teq ($inp,$len); + &sub ($K_XX_XX,$K_XX_XX,16); # rewind $K_XX_XX + &subeq ($inp,$inp,64); # reload last block to avoid SEGV + &vld1_8 ("{@X[-4&7]-@X[-3&7]}","[$inp]!"); + eval(shift(@insns)); + eval(shift(@insns)); + &vld1_8 ("{@X[-2&7]-@X[-1&7]}","[$inp]!"); + eval(shift(@insns)); + eval(shift(@insns)); + &vld1_32 ("{$K\[]}","[$K_XX_XX,:32]!"); # load K_00_19 + eval(shift(@insns)); + eval(shift(@insns)); + &vrev32_8 (@X[-4&7],@X[-4&7]); + + foreach (@insns) { eval; } # remaining instructions + + $Xi=0; +} + +sub Xloop() +{ use integer; + my $body = shift; + my @insns = (&$body,&$body,&$body,&$body); + my ($a,$b,$c,$d,$e); + + &vrev32_8 (@X[($Xi-3)&7],@X[($Xi-3)&7]); + eval(shift(@insns)); + eval(shift(@insns)); + &vadd_i32 (@X[$Xi&7],@X[($Xi-4)&7],$K); + eval(shift(@insns)); + eval(shift(@insns)); + &vst1_32 ("{@X[$Xi&7]}","[$Xfer,:128]!");# X[]+K xfer to IALU + + foreach (@insns) { eval; } + + $Xi++; +} + +$code.=<<___; +#if __ARM_MAX_ARCH__>=7 +.arch armv7-a +.fpu neon + +.type sha1_block_data_order_neon,%function +.align 4 +sha1_block_data_order_neon: +.LNEON: + stmdb sp!,{r4-r12,lr} + add $len,$inp,$len,lsl#6 @ $len to point at the end of $inp + @ dmb @ errata #451034 on early Cortex A8 + @ vstmdb sp!,{d8-d15} @ ABI specification says so + mov $saved_sp,sp + sub sp,sp,#64 @ alloca + adr $K_XX_XX,.LK_00_19 + bic sp,sp,#15 @ align for 128-bit stores + + ldmia $ctx,{$a,$b,$c,$d,$e} @ load context + mov $Xfer,sp + + vld1.8 {@X[-4&7]-@X[-3&7]},[$inp]! @ handles unaligned + veor $zero,$zero,$zero + vld1.8 {@X[-2&7]-@X[-1&7]},[$inp]! + vld1.32 {${K}\[]},[$K_XX_XX,:32]! @ load K_00_19 + vrev32.8 @X[-4&7],@X[-4&7] @ yes, even on + vrev32.8 @X[-3&7],@X[-3&7] @ big-endian... + vrev32.8 @X[-2&7],@X[-2&7] + vadd.i32 @X[0],@X[-4&7],$K + vrev32.8 @X[-1&7],@X[-1&7] + vadd.i32 @X[1],@X[-3&7],$K + vst1.32 {@X[0]},[$Xfer,:128]! + vadd.i32 @X[2],@X[-2&7],$K + vst1.32 {@X[1]},[$Xfer,:128]! + vst1.32 {@X[2]},[$Xfer,:128]! + ldr $Ki,[sp] @ big RAW stall + +.Loop_neon: +___ + &Xupdate_16_31(\&body_00_19); + &Xupdate_16_31(\&body_00_19); + &Xupdate_16_31(\&body_00_19); + &Xupdate_16_31(\&body_00_19); + &Xupdate_32_79(\&body_00_19); + &Xupdate_32_79(\&body_20_39); + &Xupdate_32_79(\&body_20_39); + &Xupdate_32_79(\&body_20_39); + &Xupdate_32_79(\&body_20_39); + &Xupdate_32_79(\&body_20_39); + &Xupdate_32_79(\&body_40_59); + &Xupdate_32_79(\&body_40_59); + &Xupdate_32_79(\&body_40_59); + &Xupdate_32_79(\&body_40_59); + &Xupdate_32_79(\&body_40_59); + &Xupdate_32_79(\&body_20_39); + &Xuplast_80(\&body_20_39); + &Xloop(\&body_20_39); + &Xloop(\&body_20_39); + &Xloop(\&body_20_39); +$code.=<<___; + ldmia $ctx,{$Ki,$t0,$t1,$Xfer} @ accumulate context + add $a,$a,$Ki + ldr $Ki,[$ctx,#16] + add $b,$b,$t0 + add $c,$c,$t1 + add $d,$d,$Xfer + moveq sp,$saved_sp + add $e,$e,$Ki + ldrne $Ki,[sp] + stmia $ctx,{$a,$b,$c,$d,$e} + addne $Xfer,sp,#3*16 + bne .Loop_neon + + @ vldmia sp!,{d8-d15} + ldmia sp!,{r4-r12,pc} +.size sha1_block_data_order_neon,.-sha1_block_data_order_neon +#endif +___ +}}} +##################################################################### +# ARMv8 stuff +# +{{{ +my ($ABCD,$E,$E0,$E1)=map("q$_",(0..3)); +my @MSG=map("q$_",(4..7)); +my @Kxx=map("q$_",(8..11)); +my ($W0,$W1,$ABCD_SAVE)=map("q$_",(12..14)); + +$code.=<<___; +#if __ARM_MAX_ARCH__>=7 +.type sha1_block_data_order_armv8,%function +.align 5 +sha1_block_data_order_armv8: +.LARMv8: + vstmdb sp!,{d8-d15} @ ABI specification says so + + veor $E,$E,$E + adr r3,.LK_00_19 + vld1.32 {$ABCD},[$ctx]! + vld1.32 {$E\[0]},[$ctx] + sub $ctx,$ctx,#16 + vld1.32 {@Kxx[0]\[]},[r3,:32]! + vld1.32 {@Kxx[1]\[]},[r3,:32]! + vld1.32 {@Kxx[2]\[]},[r3,:32]! + vld1.32 {@Kxx[3]\[]},[r3,:32] + +.Loop_v8: + vld1.8 {@MSG[0]-@MSG[1]},[$inp]! + vld1.8 {@MSG[2]-@MSG[3]},[$inp]! + vrev32.8 @MSG[0],@MSG[0] + vrev32.8 @MSG[1],@MSG[1] + + vadd.i32 $W0,@Kxx[0],@MSG[0] + vrev32.8 @MSG[2],@MSG[2] + vmov $ABCD_SAVE,$ABCD @ offload + subs $len,$len,#1 + + vadd.i32 $W1,@Kxx[0],@MSG[1] + vrev32.8 @MSG[3],@MSG[3] + sha1h $E1,$ABCD @ 0 + sha1c $ABCD,$E,$W0 + vadd.i32 $W0,@Kxx[$j],@MSG[2] + sha1su0 @MSG[0],@MSG[1],@MSG[2] +___ +for ($j=0,$i=1;$i<20-3;$i++) { +my $f=("c","p","m","p")[$i/5]; +$code.=<<___; + sha1h $E0,$ABCD @ $i + sha1$f $ABCD,$E1,$W1 + vadd.i32 $W1,@Kxx[$j],@MSG[3] + sha1su1 @MSG[0],@MSG[3] +___ +$code.=<<___ if ($i<20-4); + sha1su0 @MSG[1],@MSG[2],@MSG[3] ___ + ($E0,$E1)=($E1,$E0); ($W0,$W1)=($W1,$W0); + push(@MSG,shift(@MSG)); $j++ if ((($i+3)%5)==0); +} +$code.=<<___; + sha1h $E0,$ABCD @ $i + sha1p $ABCD,$E1,$W1 + vadd.i32 $W1,@Kxx[$j],@MSG[3] + + sha1h $E1,$ABCD @ 18 + sha1p $ABCD,$E0,$W0 + + sha1h $E0,$ABCD @ 19 + sha1p $ABCD,$E1,$W1 + + vadd.i32 $E,$E,$E0 + vadd.i32 $ABCD,$ABCD,$ABCD_SAVE + bne .Loop_v8 + + vst1.32 {$ABCD},[$ctx]! + vst1.32 {$E\[0]},[$ctx] + + vldmia sp!,{d8-d15} + ret @ bx lr +.size sha1_block_data_order_armv8,.-sha1_block_data_order_armv8 +#endif +___ +}}} +$code.=<<___; +#if __ARM_MAX_ARCH__>=7 +.comm OPENSSL_armcap_P,4,4 +#endif +___ + +{ my %opcode = ( + "sha1c" => 0xf2000c40, "sha1p" => 0xf2100c40, + "sha1m" => 0xf2200c40, "sha1su0" => 0xf2300c40, + "sha1h" => 0xf3b902c0, "sha1su1" => 0xf3ba0380 ); + + sub unsha1 { + my ($mnemonic,$arg)=@_; + + if ($arg =~ m/q([0-9]+)(?:,\s*q([0-9]+))?,\s*q([0-9]+)/o) { + my $word = $opcode{$mnemonic}|(($1&7)<<13)|(($1&8)<<19) + |(($2&7)<<17)|(($2&8)<<4) + |(($3&7)<<1) |(($3&8)<<2); + # since ARMv7 instructions are always encoded little-endian. + # correct solution is to use .inst directive, but older + # assemblers don't implement it:-( + sprintf ".byte\t0x%02x,0x%02x,0x%02x,0x%02x\t@ %s %s", + $word&0xff,($word>>8)&0xff, + ($word>>16)&0xff,($word>>24)&0xff, + $mnemonic,$arg; + } + } +} + +foreach (split($/,$code)) { + s/{q([0-9]+)\[\]}/sprintf "{d%d[],d%d[]}",2*$1,2*$1+1/eo or + s/{q([0-9]+)\[0\]}/sprintf "{d%d[0]}",2*$1/eo; + + s/\b(sha1\w+)\s+(q.*)/unsha1($1,$2)/geo; + + s/\bret\b/bx lr/o or + s/\bbx\s+lr\b/.word\t0xe12fff1e/o; # make it possible to compile with -march=armv4 + + print $_,$/; +} -$code =~ s/\bbx\s+lr\b/.word\t0xe12fff1e/gm; # make it possible to compile with -march=armv4 -print $code; close STDOUT; # enforce flush |