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Third Party Openssl
提交 0ab8fd58 编写于 作者: A Andy Polyakov
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s390x assembler pack: tune-up and support for new z196 hardware.

上级 8aa6cff4
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Showing with 779 addition and 31 deletion
crypto/aes/asm/aes-s390x.pl
浏览文件 @ 0ab8fd58
......@@ -70,6 +70,18 @@
# remains z/Architecture specific. On z990 it was measured to perform
# 2x better than code generated by gcc 4.3.
# December 2010.
#
# Add support for z196 "cipher message with counter" instruction.
# Note however that it's disengaged, because it was measured to
# perform ~12% worse than vanilla km-based code...
# February 2011.
#
# Add AES_xts_[en|de]crypt. This includes support for z196
# km-xts-aes instructions, which deliver ~70% improvement at 8KB
# block size over vanilla km-based code.
$flavour = shift;
if ($flavour =~ /3[12]/) {
......@@ -268,7 +280,7 @@ $code.=<<___;
.type _s390x_AES_encrypt,\@function
.align 16
_s390x_AES_encrypt:
st${g} $ra,`$stdframe-$SIZE_T`($sp)
st${g} $ra,15*$SIZE_T($sp)
x $s0,0($key)
x $s1,4($key)
x $s2,8($key)
......@@ -432,7 +444,7 @@ _s390x_AES_encrypt:
or $s2,$i3
or $s3,$t3
l${g} $ra,`$stdframe-$SIZE_T`($sp)
l${g} $ra,15*$SIZE_T($sp)
xr $s0,$t0
xr $s1,$t2
x $s2,24($key)
......@@ -594,7 +606,7 @@ $code.=<<___;
.type _s390x_AES_decrypt,\@function
.align 16
_s390x_AES_decrypt:
st${g} $ra,`$stdframe-$SIZE_T`($sp)
st${g} $ra,15*$SIZE_T($sp)
x $s0,0($key)
x $s1,4($key)
x $s2,8($key)
......@@ -738,7 +750,7 @@ _s390x_AES_decrypt:
nr $i1,$mask
nr $i2,$mask
l${g} $ra,`$stdframe-$SIZE_T`($sp)
l${g} $ra,15*$SIZE_T($sp)
or $s1,$t1
l $t0,16($key)
l $t1,20($key)
......@@ -1164,7 +1176,8 @@ $code.=<<___;
.size AES_set_decrypt_key,.-AES_set_decrypt_key
___
#void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
########################################################################
# void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
# size_t length, const AES_KEY *key,
# unsigned char *ivec, const int enc)
{
......@@ -1365,13 +1378,14 @@ $code.=<<___;
.size AES_cbc_encrypt,.-AES_cbc_encrypt
___
}
#void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
########################################################################
# void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
# size_t blocks, const AES_KEY *key,
# const unsigned char *ivec)
{
my $inp="%r2";
my $out="%r3";
my $len="%r4";
my $out="%r4"; # blocks and out are swapped
my $len="%r3";
my $key="%r5"; my $iv0="%r5";
my $ivp="%r6";
my $fp ="%r7";
......@@ -1381,6 +1395,9 @@ $code.=<<___;
.type AES_ctr32_encrypt,\@function
.align 16
AES_ctr32_encrypt:
xgr %r3,%r4 # flip %r3 and %r4, $out and $len
xgr %r4,%r3
xgr %r3,%r4
llgfr $len,$len # safe in ctr32 subroutine even in 64-bit case
___
$code.=<<___ if (!$softonly);
......@@ -1415,20 +1432,75 @@ $code.=<<___ if (!$softonly);
st${g} $fp,$SIZE_T($sp)
slgr $len,$fp
brc 1,.Lctr32_hw_loop # not zero, no borrow
brc 1,.Lctr32_hw_switch # not zero, no borrow
algr $fp,$len # input is shorter than allocated buffer
lghi $len,0
st${g} $fp,$SIZE_T($sp)
.Lctr32_hw_loop:
.Lctr32_hw_switch:
___
$code.=<<___ if (0); ######### kmctr code was measured to be ~12% slower
larl $s0,OPENSSL_s390xcap_P
lg $s0,8($s0)
tmhh $s0,0x0004 # check for message_security-assist-4
jz .Lctr32_km_loop
llgfr $s0,%r0
lgr $s1,%r1
lghi %r0,0
la %r1,16($sp)
.long 0xb92d2042 # kmctr %r4,%r2,%r2
llihh %r0,0x8000 # check if kmctr supports the function code
srlg %r0,%r0,0($s0)
ng %r0,16($sp)
lgr %r0,$s0
lgr %r1,$s1
jz .Lctr32_km_loop
####### kmctr code
algr $out,$inp # restore $out
lgr $s1,$len # $s1 undertakes $len
j .Lctr32_kmctr_loop
.align 16
.Lctr32_kmctr_loop:
la $s2,16($sp)
lgr $s3,$fp
.Lctr32_kmctr_prepare:
stg $iv0,0($s2)
stg $ivp,8($s2)
la $s2,16($s2)
ahi $ivp,1 # 32-bit increment, preserves upper half
brct $s3,.Lctr32_kmctr_prepare
#la $inp,0($inp) # inp
sllg $len,$fp,4 # len
#la $out,0($out) # out
la $s2,16($sp) # iv
.long 0xb92da042 # kmctr $out,$s2,$inp
brc 1,.-4 # pay attention to "partial completion"
slgr $s1,$fp
brc 1,.Lctr32_kmctr_loop # not zero, no borrow
algr $fp,$s1
lghi $s1,0
brc 4+1,.Lctr32_kmctr_loop # not zero
l${g} $sp,0($sp)
lm${g} %r6,$s3,6*$SIZE_T($sp)
br $ra
.align 16
___
$code.=<<___;
.Lctr32_km_loop:
la $s2,16($sp)
lgr $s3,$fp
.Lctr32_hw_prepare:
.Lctr32_km_prepare:
stg $iv0,0($s2)
stg $ivp,8($s2)
la $s2,16($s2)
ahi $ivp,1 # 32-bit increment, preserves upper half
brct $s3,.Lctr32_hw_prepare
brct $s3,.Lctr32_km_prepare
la $s0,16($sp) # inp
sllg $s1,$fp,4 # len
......@@ -1439,7 +1511,7 @@ $code.=<<___ if (!$softonly);
la $s2,16($sp)
lgr $s3,$fp
slgr $s2,$inp
.Lctr32_hw_xor:
.Lctr32_km_xor:
lg $s0,0($inp)
lg $s1,8($inp)
xg $s0,0($s2,$inp)
......@@ -1447,22 +1519,22 @@ $code.=<<___ if (!$softonly);
stg $s0,0($out,$inp)
stg $s1,8($out,$inp)
la $inp,16($inp)
brct $s3,.Lctr32_hw_xor
brct $s3,.Lctr32_km_xor
slgr $len,$fp
brc 1,.Lctr32_hw_loop # not zero, no borrow
brc 1,.Lctr32_km_loop # not zero, no borrow
algr $fp,$len
lghi $len,0
brc 4+1,.Lctr32_hw_loop # not zero
brc 4+1,.Lctr32_km_loop # not zero
l${g} $s0,0($sp)
l${g} $s1,$SIZE_T($sp)
la $s2,16($sp)
.Lctr32_hw_zap:
.Lctr32_km_zap:
stg $s0,0($s2)
stg $s0,8($s2)
la $s2,16($s2)
brct $s1,.Lctr32_hw_zap
brct $s1,.Lctr32_km_zap
la $sp,0($s0)
lm${g} %r6,$s3,6*$SIZE_T($sp)
......@@ -1472,12 +1544,12 @@ $code.=<<___ if (!$softonly);
___
$code.=<<___;
stm${g} $key,$ra,5*$SIZE_T($sp)
sl${g}r $out,$inp
sl${g}r $inp,$out
larl $tbl,AES_Te
llgf $t1,12($ivp)
.Lctr32_loop:
stm${g} $inp,$len,2*$SIZE_T($sp)
stm${g} $inp,$out,2*$SIZE_T($sp)
llgf $s0,0($ivp)
llgf $s1,4($ivp)
llgf $s2,8($ivp)
......@@ -1489,27 +1561,694 @@ $code.=<<___;
lm${g} $inp,$ivp,2*$SIZE_T($sp)
llgf $t1,16*$SIZE_T($sp)
x $s0,0($inp)
x $s0,0($inp,$out)
x $s1,4($inp,$out)
x $s2,8($inp,$out)
x $s3,12($inp,$out)
stm $s0,$s3,0($out)
la $out,16($out)
ahi $t1,1 # 32-bit increment
brct $len,.Lctr32_loop
lm${g} %r6,$ra,6*$SIZE_T($sp)
br $ra
.size AES_ctr32_encrypt,.-AES_ctr32_encrypt
___
}
########################################################################
# void AES_xts_encrypt(const char *inp,char *out,size_t len,
# const AES_KEY *key1, const AES_KEY *key2,u64 secno);
#
{
my $inp="%r2";
my $out="%r4"; # len and out are swapped
my $len="%r3";
my $key1="%r5"; # $i1
my $key2="%r6"; # $i2
my $fp="%r7"; # $i3
my $tweak=16*$SIZE_T+16; # or $stdframe-16, bottom of the frame...
$code.=<<___;
.type _s390x_xts_km,\@function
.align 16
_s390x_xts_km:
___
$code.=<<___ if(0);
llgfr $s0,%r0 # put aside the function code
lghi $s1,0x7f
nr $s1,%r0
lghi %r0,0 # query capability vector
la %r1,2*$SIZE_T($sp)
.long 0xb92e0042 # km %r4,%r2
llihh %r1,0x8000
srlg %r1,%r1,32($s1) # check for 32+function code
ng %r1,2*$SIZE_T($sp)
lgr %r0,$s0 # restore the function code
la %r1,0($key1) # restore $key1
jz .Lxts_km_vanilla
lmg $i2,$i3,$tweak($sp) # put aside the tweak value
algr $out,$inp
oill %r0,32 # switch to xts function code
aghi $s1,-18 #
sllg $s1,$s1,3 # (function code - 18)*8, 0 or 16
la %r1,$tweak-16($sp)
slgr %r1,$s1 # parameter block position
lmg $s0,$s3,0($key1) # load 256 bits of key material,
stmg $s0,$s3,0(%r1) # and copy it to parameter block.
# yes, it contains junk and overlaps
# with the tweak in 128-bit case.
# it's done to avoid conditional
# branch.
stmg $i2,$i3,$tweak($sp) # "re-seat" the tweak value
.long 0xb92e0042 # km %r4,%r2
brc 1,.-4 # pay attention to "partial completion"
lrvg $s0,$tweak+0($sp) # load the last tweak
lrvg $s1,$tweak+8($sp)
stmg %r0,%r3,$tweak-32(%r1) # wipe copy of the key
nill %r0,0xffdf # switch back to original function code
la %r1,0($key1) # restore pointer to $key1
slgr $out,$inp
llgc $len,2*$SIZE_T-1($sp)
nill $len,0x0f # $len%=16
br $ra
.align 16
.Lxts_km_vanilla:
___
$code.=<<___;
# prepare and allocate stack frame at the top of 4K page
# with 1K reserved for eventual signal handling
lghi $s0,-1024-256-16# guarantee at least 256-bytes buffer
lghi $s1,-4096
algr $s0,$sp
lgr $fp,$sp
ngr $s0,$s1 # align at page boundary
slgr $fp,$s0 # total buffer size
lgr $s2,$sp
lghi $s1,1024+16 # sl[g]fi is extended-immediate facility
slgr $fp,$s1 # deduct reservation to get usable buffer size
# buffer size is at lest 256 and at most 3072+256-16
la $sp,1024($s0) # alloca
nill $fp,0xfff0 # round to 16*n
st${g} $s2,0($sp) # back-chain
nill $len,0xfff0 # redundant
st${g} $fp,$SIZE_T($sp)
slgr $len,$fp
brc 1,.Lxts_km_go # not zero, no borrow
algr $fp,$len # input is shorter than allocated buffer
lghi $len,0
st${g} $fp,$SIZE_T($sp)
.Lxts_km_go:
lrvg $s0,$tweak+0($s2) # load the tweak value in little-endian
lrvg $s1,$tweak+8($s2)
la $s2,16($sp) # vector of ascending tweak values
slgr $s2,$inp
srlg $s3,$fp,4
j .Lxts_km_start
.Lxts_km_loop:
la $s2,16($sp)
slgr $s2,$inp
srlg $s3,$fp,4
.Lxts_km_prepare:
lghi $i1,0x87
srag $i2,$s1,63 # broadcast upper bit
ngr $i1,$i2 # rem
srlg $i2,$s0,63 # carry bit from lower half
sllg $s0,$s0,1
sllg $s1,$s1,1
xgr $s0,$i1
ogr $s1,$i2
.Lxts_km_start:
lrvgr $i1,$s0 # flip byte order
lrvgr $i2,$s1
stg $i1,0($s2,$inp)
stg $i2,8($s2,$inp)
xg $i1,0($inp)
xg $i2,8($inp)
stg $i1,0($out,$inp)
stg $i2,8($out,$inp)
la $inp,16($inp)
brct $s3,.Lxts_km_prepare
slgr $inp,$fp # rewind $inp
la $s2,0($out,$inp)
lgr $s3,$fp
.long 0xb92e00aa # km $s2,$s2
brc 1,.-4 # pay attention to "partial completion"
la $s2,16($sp)
slgr $s2,$inp
srlg $s3,$fp,4
.Lxts_km_xor:
lg $i1,0($out,$inp)
lg $i2,8($out,$inp)
xg $i1,0($s2,$inp)
xg $i2,8($s2,$inp)
stg $i1,0($out,$inp)
stg $i2,8($out,$inp)
la $inp,16($inp)
brct $s3,.Lxts_km_xor
slgr $len,$fp
brc 1,.Lxts_km_loop # not zero, no borrow
algr $fp,$len
lghi $len,0
brc 4+1,.Lxts_km_loop # not zero
l${g} $i1,0($sp) # back-chain
llgf $fp,`2*$SIZE_T-4`($sp) # bytes used
la $i2,16($sp)
srlg $fp,$fp,4
.Lxts_km_zap:
stg $i1,0($i2)
stg $i1,8($i2)
la $i2,16($i2)
brct $fp,.Lxts_km_zap
la $sp,0($i1)
llgc $len,2*$SIZE_T-1($i1)
nill $len,0x0f # $len%=16
bzr $ra
# generate one more tweak...
lghi $i1,0x87
srag $i2,$s1,63 # broadcast upper bit
ngr $i1,$i2 # rem
srlg $i2,$s0,63 # carry bit from lower half
sllg $s0,$s0,1
sllg $s1,$s1,1
xgr $s0,$i1
ogr $s1,$i2
ltr $len,$len # clear zero flag
br $ra
.size _s390x_xts_km,.-_s390x_xts_km
.globl AES_xts_encrypt
.type AES_xts_encrypt,\@function
.align 16
AES_xts_encrypt:
xgr %r3,%r4 # flip %r3 and %r4, $out and $len
xgr %r4,%r3
xgr %r3,%r4
___
$code.=<<___ if ($SIZE_T==4);
llgfr $len,$len
___
$code.=<<___;
st${g} $len,1*$SIZE_T($sp) # save copy of $len
srag $len,$len,4 # formally wrong, because it expands
# sign byte, but who can afford asking
# to process more than 2^63-1 bytes?
# I use it, because it sets condition
# code...
bcr 8,$ra # abort if zero (i.e. less than 16)
___
$code.=<<___ if (!$softonly);
llgf %r0,240($key2)
lhi %r1,16
clr %r0,%r1
jl .Lxts_enc_software
stm${g} %r6,$s3,6*$SIZE_T($sp)
st${g} $ra,14*$SIZE_T($sp)
sllg $len,$len,4 # $len&=~15
slgr $out,$inp
lrvg $s0,$stdframe($sp) # load secno
lghi $s1,0
la $s2,$tweak($sp)
lghi $s3,16
stmg $s0,$s1,0($s2)
la %r1,0($key2) # $key2 is not needed anymore
.long 0xb92e00aa # km $s2,$s2, generate the tweak
brc 1,.-4 # can this happen?
l %r0,240($key1)
la %r1,0($key1) # $key1 is not needed anymore
bras $ra,_s390x_xts_km
jz .Lxts_enc_km_done
aghi $inp,-16 # take one step back
la $i3,0($out,$inp) # put aside real $out
.Lxts_enc_km_steal:
llgc $i1,16($inp)
llgc $i2,0($out,$inp)
stc $i1,0($out,$inp)
stc $i2,16($out,$inp)
la $inp,1($inp)
brct $len,.Lxts_enc_km_steal
la $s2,0($i3)
lghi $s3,16
lrvgr $i1,$s0 # flip byte order
lrvgr $i2,$s1
xg $i1,0($s2)
xg $i2,8($s2)
stg $i1,0($s2)
stg $i2,8($s2)
.long 0xb92e00aa # km $s2,$s2
brc 1,.-4 # can this happen?
lrvgr $i1,$s0 # flip byte order
lrvgr $i2,$s1
xg $i1,0($i3)
xg $i2,8($i3)
stg $i1,0($i3)
stg $i2,8($i3)
.Lxts_enc_km_done:
l${g} $ra,14*$SIZE_T($sp)
st${g} $sp,$tweak($sp) # wipe tweak
st${g} $sp,$tweak($sp)
lm${g} %r6,$s3,6*$SIZE_T($sp)
br $ra
.align 16
.Lxts_enc_software:
___
$code.=<<___;
stm${g} %r6,$ra,6*$SIZE_T($sp)
slgr $out,$inp
xgr $s0,$s0 # clear upper half
xgr $s1,$s1
lrv $s0,$stdframe+4($sp) # load secno
lrv $s1,$stdframe+0($sp)
xgr $s2,$s2
xgr $s3,$s3
stm${g} %r2,%r5,2*$SIZE_T($sp)
la $key,0($key2)
larl $tbl,AES_Te
bras $ra,_s390x_AES_encrypt # generate the tweak
lm${g} %r2,%r5,2*$SIZE_T($sp)
stm $s0,$s3,$tweak($sp) # save the tweak
j .Lxts_enc_enter
.align 16
.Lxts_enc_loop:
lrvg $s1,$tweak+0($sp) # load the tweak in little-endian
lrvg $s3,$tweak+8($sp)
lghi %r1,0x87
srag %r0,$s3,63 # broadcast upper bit
ngr %r1,%r0 # rem
srlg %r0,$s1,63 # carry bit from lower half
sllg $s1,$s1,1
sllg $s3,$s3,1
xgr $s1,%r1
ogr $s3,%r0
lrvgr $s1,$s1 # flip byte order
lrvgr $s3,$s3
srlg $s0,$s1,32 # smash the tweak to 4x32-bits
stg $s1,$tweak+0($sp) # save the tweak
llgfr $s1,$s1
srlg $s2,$s3,32
stg $s3,$tweak+8($sp)
llgfr $s3,$s3
la $inp,16($inp) # $inp+=16
.Lxts_enc_enter:
x $s0,0($inp) # ^=*($inp)
x $s1,4($inp)
x $s2,8($inp)
x $s3,12($inp)
stm${g} %r2,%r3,2*$SIZE_T($sp) # only two registers are changing
la $key,0($key1)
bras $ra,_s390x_AES_encrypt
lm${g} %r2,%r5,2*$SIZE_T($sp)
x $s0,$tweak+0($sp) # ^=tweak
x $s1,$tweak+4($sp)
x $s2,$tweak+8($sp)
x $s3,$tweak+12($sp)
st $s0,0($out,$inp)
st $s1,4($out,$inp)
st $s2,8($out,$inp)
st $s3,12($out,$inp)
brct${g} $len,.Lxts_enc_loop
llgc $len,`2*$SIZE_T-1`($sp)
nill $len,0x0f # $len%16
jz .Lxts_enc_done
la $i3,0($inp,$out) # put aside real $out
.Lxts_enc_steal:
llgc %r0,16($inp)
llgc %r1,0($out,$inp)
stc %r0,0($out,$inp)
stc %r1,16($out,$inp)
la $inp,1($inp)
brct $len,.Lxts_enc_steal
la $out,0($i3) # restore real $out
# generate last tweak...
lrvg $s1,$tweak+0($sp) # load the tweak in little-endian
lrvg $s3,$tweak+8($sp)
lghi %r1,0x87
srag %r0,$s3,63 # broadcast upper bit
ngr %r1,%r0 # rem
srlg %r0,$s1,63 # carry bit from lower half
sllg $s1,$s1,1
sllg $s3,$s3,1
xgr $s1,%r1
ogr $s3,%r0
lrvgr $s1,$s1 # flip byte order
lrvgr $s3,$s3
srlg $s0,$s1,32 # smash the tweak to 4x32-bits
stg $s1,$tweak+0($sp) # save the tweak
llgfr $s1,$s1
srlg $s2,$s3,32
stg $s3,$tweak+8($sp)
llgfr $s3,$s3
x $s0,0($out) # ^=*(inp)|stolen cipther-text
x $s1,4($out)
x $s2,8($out)
x $s3,12($out)
st${g} $out,4*$SIZE_T($sp)
la $key,0($key1)
bras $ra,_s390x_AES_encrypt
l${g} $out,4*$SIZE_T($sp)
x $s0,`$tweak+0`($sp) # ^=tweak
x $s1,`$tweak+4`($sp)
x $s2,`$tweak+8`($sp)
x $s3,`$tweak+12`($sp)
st $s0,0($out)
st $s1,4($out)
st $s2,8($out)
st $s3,12($out)
.Lxts_enc_done:
stg $sp,$tweak+0($sp) # wipe tweak
stg $sp,$twesk+8($sp)
lm${g} %r6,$ra,6*$SIZE_T($sp)
br $ra
.size AES_xts_encrypt,.-AES_xts_encrypt
___
# void AES_xts_decrypt(const char *inp,char *out,size_t len,
# const AES_KEY *key1, const AES_KEY *key2,u64 secno);
#
$code.=<<___;
.globl AES_xts_decrypt
.type AES_xts_decrypt,\@function
.align 16
AES_xts_decrypt:
xgr %r3,%r4 # flip %r3 and %r4, $out and $len
xgr %r4,%r3
xgr %r3,%r4
___
$code.=<<___ if ($SIZE_T==4);
llgfr $len,$len
___
$code.=<<___;
st${g} $len,1*$SIZE_T($sp) # save copy of $len
aghi $len,-16
bcr 4,$ra # abort if less than zero. formally
# wrong, because $len is unsigned,
# but who can afford asking to
# process more than 2^63-1 bytes?
tmll $len,0x0f
jnz .Lxts_dec_proceed
aghi $len,16
.Lxts_dec_proceed:
___
$code.=<<___ if (!$softonly);
llgf %r0,240($key2)
lhi %r1,16
clr %r0,%r1
jl .Lxts_dec_software
stm${g} %r6,$s3,6*$SIZE_T($sp)
st${g} $ra,14*$SIZE_T($sp)
nill $len,0xfff0 # $len&=~15
slgr $out,$inp
# generate the tweak value
lrvg $s0,$stdframe($sp) # load secno
lghi $s1,0
la $s2,$tweak($sp)
lghi $s3,16
stg $s0,0($s2)
stg $s1,8($s2)
la %r1,0($key2) # $key2 is not needed past this point
.long 0xb92e00aa # km $s2,$s2, generate the tweak
brc 1,.-4 # can this happen?
l %r0,240($key1)
la %r1,0($key1) # $key1 is not needed anymore
ltgr $len,$len
jz .Lxts_dec_km_short
bras $ra,_s390x_xts_km
jz .Lxts_dec_km_done
lrvgr $s2,$s0 # make copy in reverse byte order
lrvgr $s3,$s1
j .Lxts_dec_km_2ndtweak
.Lxts_dec_km_short:
llgc $len,`2*$SIZE_T-1`($sp)
nill $len,0x0f # $len%=16
lrvg $s0,$tweak+0($sp) # load the tweak
lrvg $s1,$tweak+8($sp)
lrvgr $s2,$s0 # make copy in reverse byte order
lrvgr $s3,$s1
.Lxts_dec_km_2ndtweak:
lghi $i1,0x87
srag $i2,$s1,63 # broadcast upper bit
ngr $i1,$i2 # rem
srlg $i2,$s0,63 # carry bit from lower half
sllg $s0,$s0,1
sllg $s1,$s1,1
xgr $s0,$i1
ogr $s1,$i2
lrvgr $i1,$s0 # flip byte order
lrvgr $i2,$s1
xg $i1,0($inp)
xg $i2,8($inp)
stg $i1,0($out,$inp)
stg $i2,8($out,$inp)
la $i2,0($out,$inp)
lghi $i3,16
.long 0xb92e0066 # km $i2,$i2
brc 1,.-4 # can this happen?
lrvgr $i1,$s0
lrvgr $i2,$s1
xg $i1,0($out,$inp)
xg $i2,8($out,$inp)
stg $i1,0($out,$inp)
stg $i2,8($out,$inp)
la $i3,0($out,$inp) # put aside real $out
.Lxts_dec_km_steal:
llgc $i1,16($inp)
llgc $i2,0($out,$inp)
stc $i1,0($out,$inp)
stc $i2,16($out,$inp)
la $inp,1($inp)
brct $len,.Lxts_dec_km_steal
lgr $s0,$s2
lgr $s1,$s3
xg $s0,0($i3)
xg $s1,8($i3)
stg $s0,0($i3)
stg $s1,8($i3)
la $s0,0($i3)
lghi $s1,16
.long 0xb92e0088 # km $s0,$s0
brc 1,.-4 # can this happen?
xg $s2,0($i3)
xg $s3,8($i3)
stg $s2,0($i3)
stg $s3,8($i3)
.Lxts_dec_km_done:
l${g} $ra,14*$SIZE_T($sp)
st${g} $sp,$tweak($sp) # wipe tweak
st${g} $sp,$tweak($sp)
lm${g} %r6,$s3,6*$SIZE_T($sp)
br $ra
.align 16
.Lxts_dec_software:
___
$code.=<<___;
stm${g} %r6,$ra,6*$SIZE_T($sp)
srlg $len,$len,4
slgr $out,$inp
xgr $s0,$s0 # clear upper half
xgr $s1,$s1
lrv $s0,$stdframe+4($sp) # load secno
lrv $s1,$stdframe+0($sp)
xgr $s2,$s2
xgr $s3,$s3
stm${g} %r2,%r5,2*$SIZE_T($sp)
la $key,0($key2)
larl $tbl,AES_Te
bras $ra,_s390x_AES_encrypt # generate the tweak
lm${g} %r2,%r5,2*$SIZE_T($sp)
larl $tbl,AES_Td
lt${g}r $len,$len
stm $s0,$s3,$tweak($sp) # save the tweak
jz .Lxts_dec_short
j .Lxts_dec_enter
.align 16
.Lxts_dec_loop:
lrvg $s1,$tweak+0($sp) # load the tweak in little-endian
lrvg $s3,$tweak+8($sp)
lghi %r1,0x87
srag %r0,$s3,63 # broadcast upper bit
ngr %r1,%r0 # rem
srlg %r0,$s1,63 # carry bit from lower half
sllg $s1,$s1,1
sllg $s3,$s3,1
xgr $s1,%r1
ogr $s3,%r0
lrvgr $s1,$s1 # flip byte order
lrvgr $s3,$s3
srlg $s0,$s1,32 # smash the tweak to 4x32-bits
stg $s1,$tweak+0($sp) # save the tweak
llgfr $s1,$s1
srlg $s2,$s3,32
stg $s3,$tweak+8($sp)
llgfr $s3,$s3
.Lxts_dec_enter:
x $s0,0($inp) # tweak^=*(inp)
x $s1,4($inp)
x $s2,8($inp)
x $s3,12($inp)
stm${g} %r2,%r3,2*$SIZE_T($sp) # only two registers are changing
la $key,0($key1)
bras $ra,_s390x_AES_decrypt
lm${g} %r2,%r5,2*$SIZE_T($sp)
x $s0,$tweak+0($sp) # ^=tweak
x $s1,$tweak+4($sp)
x $s2,$tweak+8($sp)
x $s3,$tweak+12($sp)
st $s0,0($out,$inp)
st $s1,4($out,$inp)
st $s2,8($out,$inp)
st $s3,12($out,$inp)
la $inp,16($inp)
ahi $t1,1 # 32-bit increment
brct $len,.Lctr32_loop
brct${g} $len,.Lxts_dec_loop
llgc $len,`2*$SIZE_T-1`($sp)
nill $len,0x0f # $len%16
jz .Lxts_dec_done
# generate pair of tweaks...
lrvg $s1,$tweak+0($sp) # load the tweak in little-endian
lrvg $s3,$tweak+8($sp)
lghi %r1,0x87
srag %r0,$s3,63 # broadcast upper bit
ngr %r1,%r0 # rem
srlg %r0,$s1,63 # carry bit from lower half
sllg $s1,$s1,1
sllg $s3,$s3,1
xgr $s1,%r1
ogr $s3,%r0
lrvgr $i2,$s1 # flip byte order
lrvgr $i3,$s3
stmg $i2,$i3,$tweak($sp) # save the 1st tweak
j .Lxts_dec_2ndtweak
.align 16
.Lxts_dec_short:
llgc $len,`2*$SIZE_T-1`($sp)
nill $len,0x0f # $len%16
lrvg $s1,$tweak+0($sp) # load the tweak in little-endian
lrvg $s3,$tweak+8($sp)
.Lxts_dec_2ndtweak:
lghi %r1,0x87
srag %r0,$s3,63 # broadcast upper bit
ngr %r1,%r0 # rem
srlg %r0,$s1,63 # carry bit from lower half
sllg $s1,$s1,1
sllg $s3,$s3,1
xgr $s1,%r1
ogr $s3,%r0
lrvgr $s1,$s1 # flip byte order
lrvgr $s3,$s3
srlg $s0,$s1,32 # smash the tweak to 4x32-bits
stg $s1,$tweak-16+0($sp) # save the 2nd tweak
llgfr $s1,$s1
srlg $s2,$s3,32
stg $s3,$tweak-16+8($sp)
llgfr $s3,$s3
x $s0,0($inp) # tweak_the_2nd^=*(inp)
x $s1,4($inp)
x $s2,8($inp)
x $s3,12($inp)
stm${g} %r2,%r3,2*$SIZE_T($sp)
la $key,0($key1)
bras $ra,_s390x_AES_decrypt
lm${g} %r2,%r5,2*$SIZE_T($sp)
x $s0,$tweak-16+0($sp) # ^=tweak_the_2nd
x $s1,$tweak-16+4($sp)
x $s2,$tweak-16+8($sp)
x $s3,$tweak-16+12($sp)
st $s0,0($out,$inp)
st $s1,4($out,$inp)
st $s2,8($out,$inp)
st $s3,12($out,$inp)
la $i3,0($out,$inp) # put aside real $out
.Lxts_dec_steal:
llgc %r0,16($inp)
llgc %r1,0($out,$inp)
stc %r0,0($out,$inp)
stc %r1,16($out,$inp)
la $inp,1($inp)
brct $len,.Lxts_dec_steal
la $out,0($i3) # restore real $out
lm $s0,$s3,$tweak($sp) # load the 1st tweak
x $s0,0($out) # tweak^=*(inp)|stolen cipher-text
x $s1,4($out)
x $s2,8($out)
x $s3,12($out)
st${g} $out,4*$SIZE_T($sp)
la $key,0($key1)
bras $ra,_s390x_AES_decrypt
l${g} $out,4*$SIZE_T($sp)
x $s0,$tweak+0($sp) # ^=tweak
x $s1,$tweak+4($sp)
x $s2,$tweak+8($sp)
x $s3,$tweak+12($sp)
st $s0,0($out)
st $s1,4($out)
st $s2,8($out)
st $s3,12($out)
stg $sp,$tweak-16+0($sp) # wipe 2nd tweak
stg $sp,$tweak-16+8($sp)
.Lxts_dec_done:
stg $sp,$tweak+0($sp) # wipe tweak
stg $sp,$twesk+8($sp)
lm${g} %r6,$ra,6*$SIZE_T($sp)
br $ra
.size AES_ctr32_encrypt,.-AES_ctr32_encrypt
.size AES_xts_decrypt,.-AES_xts_decrypt
___
}
$code.=<<___;
.comm OPENSSL_s390xcap_P,16,8
.string "AES for s390x, CRYPTOGAMS by <appro\@openssl.org>"
.comm OPENSSL_s390xcap_P,16,8
___
$code =~ s/\`([^\`]*)\`/eval $1/gem;
......
crypto/bn/asm/s390x-mont.pl
浏览文件 @ 0ab8fd58
......@@ -41,8 +41,8 @@
# processor, as long as it's "z-CPU". Latter implies that the code
# remains z/Architecture specific. Compatibility with 32-bit BN_ULONG
# is achieved by swapping words after 64-bit loads, follow _dswap-s.
# On z990 it was measured to perform 2.6-2.2 times better, less for
# longer keys...
# On z990 it was measured to perform 2.6-2.2 times better than
# compiler-generated code, less for longer keys...
$flavour = shift;
......@@ -102,8 +102,8 @@ $code.=<<___ if ($flavour =~ /3[12]/);
bnzr %r14 # if ($num&1) return 0;
___
$code.=<<___ if ($flavour !~ /3[12]/);
cghi $num,128 #
bhr %r14 # if($num>128) return 0;
cghi $num,96 #
bhr %r14 # if($num>96) return 0;
___
$code.=<<___;
stm${g} %r3,%r15,3*$SIZE_T($sp)
......
crypto/modes/asm/ghash-s390x.pl
浏览文件 @ 0ab8fd58
......@@ -28,6 +28,15 @@
# remains z/Architecture specific. On z990 it was measured to perform
# 2.8x better than 32-bit code generated by gcc 4.3.
# March 2011.
#
# Support for hardware KIMD-GHASH is verified to produce correct
# result and therefore is engaged. On z196 it was measured to process
# 8KB buffer ~7 faster than software implementation. It's not as
# impressive for smaller buffer sizes and for smallest 16-bytes buffer
# it's actually almost 2 times slower. Which is the reason why
# KIMD-GHASH is not used in gcm_gmult_4bit.
$flavour = shift;
if ($flavour =~ /3[12]/) {
......@@ -41,7 +50,7 @@ if ($flavour =~ /3[12]/) {
while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {}
open STDOUT,">$output";
$softonly=1; # disable hardware support for now
$softonly=0;
$Zhi="%r0";
$Zlo="%r1";
......@@ -70,7 +79,7 @@ $code.=<<___;
.align 32
gcm_gmult_4bit:
___
$code.=<<___ if(!$softonly);
$code.=<<___ if(!$softonly && 0); # hardware is slow for single block...
larl %r1,OPENSSL_s390xcap_P
lg %r0,0(%r1)
tmhl %r0,0x4000 # check for message-security-assist
......
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