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aes/asm/aes-ppc.pl: add little-endian support.

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Submitted by: Marcelo Cerri
This commit is contained in:
Andy Polyakov 2013-10-31 11:41:26 +01:00
parent 8ff8a829b0
commit c944f81703
1 changed files with 94 additions and 0 deletions
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94
crypto/aes/asm/aes-ppc.pl
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@ -45,6 +45,12 @@ if ($flavour =~ /64/) {
$PUSH ="stw";
} else { die "nonsense $flavour"; }
$LITTLE_ENDIAN=0;
if ($flavour =~ /le$/) {
die "little-endian is 64-bit only: $flavour" if ($SIZE_T == 4);
$LITTLE_ENDIAN=1;
}
$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
( $xlate="${dir}ppc-xlate.pl" and -f $xlate ) or
( $xlate="${dir}../../perlasm/ppc-xlate.pl" and -f $xlate) or
@ -361,17 +367,61 @@ $code.=<<___;
bne Lenc_unaligned
Lenc_unaligned_ok:
___
$code.=<<___ if (!$LITTLE_ENDIAN);
lwz $s0,0($inp)
lwz $s1,4($inp)
lwz $s2,8($inp)
lwz $s3,12($inp)
___
$code.=<<___ if ($LITTLE_ENDIAN);
lwz $t0,0($inp)
lwz $t1,4($inp)
lwz $t2,8($inp)
lwz $t3,12($inp)
rotlwi $s0,$t0,8
rotlwi $s1,$t1,8
rotlwi $s2,$t2,8
rotlwi $s3,$t3,8
rlwimi $s0,$t0,24,0,7
rlwimi $s1,$t1,24,0,7
rlwimi $s2,$t2,24,0,7
rlwimi $s3,$t3,24,0,7
rlwimi $s0,$t0,24,16,23
rlwimi $s1,$t1,24,16,23
rlwimi $s2,$t2,24,16,23
rlwimi $s3,$t3,24,16,23
___
$code.=<<___;
bl LAES_Te
bl Lppc_AES_encrypt_compact
$POP $out,`$FRAME-$SIZE_T*19`($sp)
___
$code.=<<___ if ($LITTLE_ENDIAN);
rotlwi $t0,$s0,8
rotlwi $t1,$s1,8
rotlwi $t2,$s2,8
rotlwi $t3,$s3,8
rlwimi $t0,$s0,24,0,7
rlwimi $t1,$s1,24,0,7
rlwimi $t2,$s2,24,0,7
rlwimi $t3,$s3,24,0,7
rlwimi $t0,$s0,24,16,23
rlwimi $t1,$s1,24,16,23
rlwimi $t2,$s2,24,16,23
rlwimi $t3,$s3,24,16,23
stw $t0,0($out)
stw $t1,4($out)
stw $t2,8($out)
stw $t3,12($out)
___
$code.=<<___ if (!$LITTLE_ENDIAN);
stw $s0,0($out)
stw $s1,4($out)
stw $s2,8($out)
stw $s3,12($out)
___
$code.=<<___;
b Lenc_done
Lenc_unaligned:
@ -795,17 +845,61 @@ Lenc_compact_done:
bne Ldec_unaligned
Ldec_unaligned_ok:
___
$code.=<<___ if (!$LITTLE_ENDIAN);
lwz $s0,0($inp)
lwz $s1,4($inp)
lwz $s2,8($inp)
lwz $s3,12($inp)
___
$code.=<<___ if ($LITTLE_ENDIAN);
lwz $t0,0($inp)
lwz $t1,4($inp)
lwz $t2,8($inp)
lwz $t3,12($inp)
rotlwi $s0,$t0,8
rotlwi $s1,$t1,8
rotlwi $s2,$t2,8
rotlwi $s3,$t3,8
rlwimi $s0,$t0,24,0,7
rlwimi $s1,$t1,24,0,7
rlwimi $s2,$t2,24,0,7
rlwimi $s3,$t3,24,0,7
rlwimi $s0,$t0,24,16,23
rlwimi $s1,$t1,24,16,23
rlwimi $s2,$t2,24,16,23
rlwimi $s3,$t3,24,16,23
___
$code.=<<___;
bl LAES_Td
bl Lppc_AES_decrypt_compact
$POP $out,`$FRAME-$SIZE_T*19`($sp)
___
$code.=<<___ if ($LITTLE_ENDIAN);
rotlwi $t0,$s0,8
rotlwi $t1,$s1,8
rotlwi $t2,$s2,8
rotlwi $t3,$s3,8
rlwimi $t0,$s0,24,0,7
rlwimi $t1,$s1,24,0,7
rlwimi $t2,$s2,24,0,7
rlwimi $t3,$s3,24,0,7
rlwimi $t0,$s0,24,16,23
rlwimi $t1,$s1,24,16,23
rlwimi $t2,$s2,24,16,23
rlwimi $t3,$s3,24,16,23
stw $t0,0($out)
stw $t1,4($out)
stw $t2,8($out)
stw $t3,12($out)
___
$code.=<<___ if (!$LITTLE_ENDIAN);
stw $s0,0($out)
stw $s1,4($out)
stw $s2,8($out)
stw $s3,12($out)
___
$code.=<<___;
b Ldec_done
Ldec_unaligned: