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vpaes-ppc.pl: fix bug in IV handling and comply with ABI.

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This commit is contained in:
Andy Polyakov 2013-11-29 14:40:51 +01:00
parent b9e87d07cb
commit 89bb96e51d
1 changed files with 6 additions and 9 deletions
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15
crypto/aes/asm/vpaes-ppc.pl
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@ -304,7 +304,6 @@ Lenc_entry:
bl _vpaes_encrypt_preheat
lvx v0, 0, $inp
neg r8, $inp # prepare for unaligned access
lvsl $keyperm, 0, $key
lvsr $outperm, 0, $out
@ -488,7 +487,6 @@ Ldec_entry:
bl _vpaes_decrypt_preheat
lvx v0, 0, $inp
neg r8, $inp # prepare for unaligned access
lvsl $keyperm, 0, $key
lvsr $outperm, 0, $out
@ -545,14 +543,12 @@ Ldec_entry:
mfspr r7, 256
mtspr 256, r6 # preserve all AltiVec registers
neg r8, r31 # load [potentially unaligned] iv
lvx v24, 0, r31 # load [potentially unaligned] iv
li r9, 15
lvx v24, 0, r31
lvsr $inpperm, 0, r8 # -ivp
lvsl $inpperm, 0, r31
lvx v25, r9, r31
vperm v24, v24, v25, $inpperm
lvx v0, 0, $inp
neg r8, $inp # prepare for unaligned access
vxor v7, v7, v7
lvsl $keyperm, 0, $key
@ -619,11 +615,12 @@ Lcbc_done:
vsel v1, $outhead, v1, $outmask
stvx v1, 0, $out
lvsr $outperm, 0, r31 # write [potentially unaligned] iv
neg r8, r31 # write [potentially unaligned] iv
lvsl $outperm, 0, r8
li r6, 15
vnor $outmask, v7, v7 # 0xff..ff
vperm $outmask, v7, $outmask, $outperm
lvx $outhead, 0, $out
lvx $outhead, 0, r31
vperm v24, v24, v24, $outperm # rotate
vsel v0, $outhead, v24, $outmask
lvx v1, r6, r31
@ -647,7 +644,7 @@ ___
}
{
my ($inp,$bits,$out)=map("r$_",(3..5));
my $dir="cr3";
my $dir="cr1";
my ($invlo,$invhi,$iptlo,$ipthi,$rcon) = map("v$_",(10..13,24));
$code.=<<___;