Update SHA-1/256/512 asm for ARM from upstream.
This change syncs these asm files with upstream's 1.0.2 branch. The
important change is that they contain ARMv8 code that allows 32-bit ARM
code to use the hardware support in ARMv8 when running on such a chip.
Change-Id: Id37cb1ff0cbc98a8e328612df7cf60340ca96064
Reviewed-on: https://boringssl-review.googlesource.com/2921
Reviewed-by: David Benjamin <davidben@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/crypto/sha/asm/sha1-armv4-large.pl b/crypto/sha/asm/sha1-armv4-large.pl
index c84b548..b2c3032 100644
--- a/crypto/sha/asm/sha1-armv4-large.pl
+++ b/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";
@@ -150,17 +164,25 @@
}
$code=<<___;
-#if defined(__arm__)
#include "arm_arch.h"
.text
+.code 32
.global sha1_block_data_order
-.hidden 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}
@@ -235,18 +257,427 @@
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
___
-$code =~ s/\bbx\s+lr\b/.word\t0xe12fff1e/gm; # make it possible to compile with -march=armv4
-print $code;
+{ my %opcode = (
+ "sha1c" => 0xf2000c40, "sha1p" => 0xf2100c40,
+ "sha1m" => 0xf2200c40, "sha1su0" => 0xf2300c40,
+ "sha1h" => 0xf3b902c0, "sha1su1" => 0xf3ba0380 );
+
+ sub unsha1 {
+ my ($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 $_,$/;
+}
+
close STDOUT; # enforce flush
diff --git a/crypto/sha/asm/sha256-armv4.pl b/crypto/sha/asm/sha256-armv4.pl
index ff99037..b0ae936 100644
--- a/crypto/sha/asm/sha256-armv4.pl
+++ b/crypto/sha/asm/sha256-armv4.pl
@@ -31,6 +31,10 @@
# code (meaning that latter performs sub-optimally, nothing was done
# about it).
+# May 2014.
+#
+# Add ARMv8 code path performing at 2.0 cpb on Apple A7.
+
while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {}
open STDOUT,">$output";
@@ -147,7 +151,6 @@
}
$code=<<___;
-#if defined(__arm__)
#include "arm_arch.h"
.text
@@ -174,20 +177,23 @@
.word 0x90befffa,0xa4506ceb,0xbef9a3f7,0xc67178f2
.size K256,.-K256
.word 0 @ terminator
+#if __ARM_MAX_ARCH__>=7
.LOPENSSL_armcap:
.word OPENSSL_armcap_P-sha256_block_data_order
+#endif
.align 5
.global sha256_block_data_order
-.hidden sha256_block_data_order
.type sha256_block_data_order,%function
sha256_block_data_order:
sub r3,pc,#8 @ sha256_block_data_order
add $len,$inp,$len,lsl#6 @ len to point at the end of inp
-#if __ARM_ARCH__>=7
+#if __ARM_MAX_ARCH__>=7
ldr r12,.LOPENSSL_armcap
ldr r12,[r3,r12] @ OPENSSL_armcap_P
- tst r12,#1
+ tst r12,#ARMV8_SHA256
+ bne .LARMv8
+ tst r12,#ARMV7_NEON
bne .LNEON
#endif
stmdb sp!,{$ctx,$inp,$len,r4-r11,lr}
@@ -243,6 +249,7 @@
moveq pc,lr @ be binary compatible with V4, yet
bx lr @ interoperable with Thumb ISA:-)
#endif
+.size sha256_block_data_order,.-sha256_block_data_order
___
######################################################################
# NEON stuff
@@ -418,9 +425,13 @@
}
$code.=<<___;
-#if __ARM_ARCH__>=7
+#if __ARM_MAX_ARCH__>=7
+.arch armv7-a
.fpu neon
+
+.type sha256_block_data_order_neon,%function
.align 4
+sha256_block_data_order_neon:
.LNEON:
stmdb sp!,{r4-r12,lr}
@@ -523,19 +534,128 @@
bne .L_00_48
ldmia sp!,{r4-r12,pc}
+.size sha256_block_data_order_neon,.-sha256_block_data_order_neon
+#endif
+___
+}}}
+######################################################################
+# ARMv8 stuff
+#
+{{{
+my ($ABCD,$EFGH,$abcd)=map("q$_",(0..2));
+my @MSG=map("q$_",(8..11));
+my ($W0,$W1,$ABCD_SAVE,$EFGH_SAVE)=map("q$_",(12..15));
+my $Ktbl="r3";
+
+$code.=<<___;
+#if __ARM_MAX_ARCH__>=7
+.type sha256_block_data_order_armv8,%function
+.align 5
+sha256_block_data_order_armv8:
+.LARMv8:
+ vld1.32 {$ABCD,$EFGH},[$ctx]
+ sub $Ktbl,r3,#sha256_block_data_order-K256
+
+.Loop_v8:
+ vld1.8 {@MSG[0]-@MSG[1]},[$inp]!
+ vld1.8 {@MSG[2]-@MSG[3]},[$inp]!
+ vld1.32 {$W0},[$Ktbl]!
+ vrev32.8 @MSG[0],@MSG[0]
+ vrev32.8 @MSG[1],@MSG[1]
+ vrev32.8 @MSG[2],@MSG[2]
+ vrev32.8 @MSG[3],@MSG[3]
+ vmov $ABCD_SAVE,$ABCD @ offload
+ vmov $EFGH_SAVE,$EFGH
+ teq $inp,$len
+___
+for($i=0;$i<12;$i++) {
+$code.=<<___;
+ vld1.32 {$W1},[$Ktbl]!
+ vadd.i32 $W0,$W0,@MSG[0]
+ sha256su0 @MSG[0],@MSG[1]
+ vmov $abcd,$ABCD
+ sha256h $ABCD,$EFGH,$W0
+ sha256h2 $EFGH,$abcd,$W0
+ sha256su1 @MSG[0],@MSG[2],@MSG[3]
+___
+ ($W0,$W1)=($W1,$W0); push(@MSG,shift(@MSG));
+}
+$code.=<<___;
+ vld1.32 {$W1},[$Ktbl]!
+ vadd.i32 $W0,$W0,@MSG[0]
+ vmov $abcd,$ABCD
+ sha256h $ABCD,$EFGH,$W0
+ sha256h2 $EFGH,$abcd,$W0
+
+ vld1.32 {$W0},[$Ktbl]!
+ vadd.i32 $W1,$W1,@MSG[1]
+ vmov $abcd,$ABCD
+ sha256h $ABCD,$EFGH,$W1
+ sha256h2 $EFGH,$abcd,$W1
+
+ vld1.32 {$W1},[$Ktbl]
+ vadd.i32 $W0,$W0,@MSG[2]
+ sub $Ktbl,$Ktbl,#256-16 @ rewind
+ vmov $abcd,$ABCD
+ sha256h $ABCD,$EFGH,$W0
+ sha256h2 $EFGH,$abcd,$W0
+
+ vadd.i32 $W1,$W1,@MSG[3]
+ vmov $abcd,$ABCD
+ sha256h $ABCD,$EFGH,$W1
+ sha256h2 $EFGH,$abcd,$W1
+
+ vadd.i32 $ABCD,$ABCD,$ABCD_SAVE
+ vadd.i32 $EFGH,$EFGH,$EFGH_SAVE
+ bne .Loop_v8
+
+ vst1.32 {$ABCD,$EFGH},[$ctx]
+
+ ret @ bx lr
+.size sha256_block_data_order_armv8,.-sha256_block_data_order_armv8
#endif
___
}}}
$code.=<<___;
-.size sha256_block_data_order,.-sha256_block_data_order
-.asciz "SHA256 block transform for ARMv4/NEON, CRYPTOGAMS by <appro\@openssl.org>"
+.asciz "SHA256 block transform for ARMv4/NEON/ARMv8, CRYPTOGAMS by <appro\@openssl.org>"
.align 2
+#if __ARM_MARCH_ARCH__>=7
.comm OPENSSL_armcap_P,4,4
-
#endif
___
-$code =~ s/\`([^\`]*)\`/eval $1/gem;
-$code =~ s/\bbx\s+lr\b/.word\t0xe12fff1e/gm; # make it possible to compile with -march=armv4
-print $code;
+{ my %opcode = (
+ "sha256h" => 0xf3000c40, "sha256h2" => 0xf3100c40,
+ "sha256su0" => 0xf3ba03c0, "sha256su1" => 0xf3200c40 );
+
+ sub unsha256 {
+ my ($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/\`([^\`]*)\`/eval $1/geo;
+
+ s/\b(sha256\w+)\s+(q.*)/unsha256($1,$2)/geo;
+
+ s/\bret\b/bx lr/go or
+ s/\bbx\s+lr\b/.word\t0xe12fff1e/go; # make it possible to compile with -march=armv4
+
+ print $_,"\n";
+}
+
close STDOUT; # enforce flush
diff --git a/crypto/sha/asm/sha512-armv4.pl b/crypto/sha/asm/sha512-armv4.pl
index 0524b8e..fb7dc50 100644
--- a/crypto/sha/asm/sha512-armv4.pl
+++ b/crypto/sha/asm/sha512-armv4.pl
@@ -180,7 +180,6 @@
___
}
$code=<<___;
-#if defined(__arm__)
#include "arm_arch.h"
#ifdef __ARMEL__
# define LO 0
@@ -238,17 +237,20 @@
WORD64(0x4cc5d4be,0xcb3e42b6, 0x597f299c,0xfc657e2a)
WORD64(0x5fcb6fab,0x3ad6faec, 0x6c44198c,0x4a475817)
.size K512,.-K512
+#if __ARM_MAX_ARCH__>=7
.LOPENSSL_armcap:
.word OPENSSL_armcap_P-sha512_block_data_order
.skip 32-4
+#else
+.skip 32
+#endif
.global sha512_block_data_order
-.hidden sha512_block_data_order
.type sha512_block_data_order,%function
sha512_block_data_order:
sub r3,pc,#8 @ sha512_block_data_order
add $len,$inp,$len,lsl#7 @ len to point at the end of inp
-#if __ARM_ARCH__>=7
+#if __ARM_MAX_ARCH__>=7
ldr r12,.LOPENSSL_armcap
ldr r12,[r3,r12] @ OPENSSL_armcap_P
tst r12,#1
@@ -553,7 +555,8 @@
}
$code.=<<___;
-#if __ARM_ARCH__>=7
+#if __ARM_MAX_ARCH__>=7
+.arch armv7-a
.fpu neon
.align 4
@@ -586,7 +589,7 @@
bne .Loop_neon
vldmia sp!,{d8-d15} @ epilogue
- bx lr
+ ret @ bx lr
#endif
___
}
@@ -594,12 +597,13 @@
.size sha512_block_data_order,.-sha512_block_data_order
.asciz "SHA512 block transform for ARMv4/NEON, CRYPTOGAMS by <appro\@openssl.org>"
.align 2
+#if __ARM_MAX_ARCH__>=7
.comm OPENSSL_armcap_P,4,4
-
#endif
___
$code =~ s/\`([^\`]*)\`/eval $1/gem;
$code =~ s/\bbx\s+lr\b/.word\t0xe12fff1e/gm; # make it possible to compile with -march=armv4
+$code =~ s/\bret\b/bx lr/gm;
print $code;
close STDOUT; # enforce flush
