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-rw-r--r--openssl/crypto/modes/asm/ghash-x86_64.pl1149
1 files changed, 1048 insertions, 101 deletions
diff --git a/openssl/crypto/modes/asm/ghash-x86_64.pl b/openssl/crypto/modes/asm/ghash-x86_64.pl
index 38d779edb..6e656ca13 100644
--- a/openssl/crypto/modes/asm/ghash-x86_64.pl
+++ b/openssl/crypto/modes/asm/ghash-x86_64.pl
@@ -22,6 +22,8 @@
# P4 28.6 14.0 +100%
# Opteron 19.3 7.7 +150%
# Core2 17.8 8.1(**) +120%
+# Atom 31.6 16.8 +88%
+# VIA Nano 21.8 10.1 +115%
#
# (*) comparison is not completely fair, because C results are
# for vanilla "256B" implementation, while assembler results
@@ -39,6 +41,44 @@
# providing access to a Westmere-based system on behalf of Intel
# Open Source Technology Centre.
+# December 2012
+#
+# Overhaul: aggregate Karatsuba post-processing, improve ILP in
+# reduction_alg9, increase reduction aggregate factor to 4x. As for
+# the latter. ghash-x86.pl discusses that it makes lesser sense to
+# increase aggregate factor. Then why increase here? Critical path
+# consists of 3 independent pclmulqdq instructions, Karatsuba post-
+# processing and reduction. "On top" of this we lay down aggregated
+# multiplication operations, triplets of independent pclmulqdq's. As
+# issue rate for pclmulqdq is limited, it makes lesser sense to
+# aggregate more multiplications than it takes to perform remaining
+# non-multiplication operations. 2x is near-optimal coefficient for
+# contemporary Intel CPUs (therefore modest improvement coefficient),
+# but not for Bulldozer. Latter is because logical SIMD operations
+# are twice as slow in comparison to Intel, so that critical path is
+# longer. A CPU with higher pclmulqdq issue rate would also benefit
+# from higher aggregate factor...
+#
+# Westmere 1.78(+13%)
+# Sandy Bridge 1.80(+8%)
+# Ivy Bridge 1.80(+7%)
+# Haswell 0.55(+93%) (if system doesn't support AVX)
+# Broadwell 0.45(+110%)(if system doesn't support AVX)
+# Bulldozer 1.49(+27%)
+# Silvermont 2.88(+13%)
+
+# March 2013
+#
+# ... 8x aggregate factor AVX code path is using reduction algorithm
+# suggested by Shay Gueron[1]. Even though contemporary AVX-capable
+# CPUs such as Sandy and Ivy Bridge can execute it, the code performs
+# sub-optimally in comparison to above mentioned version. But thanks
+# to Ilya Albrekht and Max Locktyukhin of Intel Corp. we knew that
+# it performs in 0.41 cycles per byte on Haswell processor, and in
+# 0.29 on Broadwell.
+#
+# [1] http://rt.openssl.org/Ticket/Display.html?id=2900&user=guest&pass=guest
+
$flavour = shift;
$output = shift;
if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
@@ -50,9 +90,30 @@ $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or
die "can't locate x86_64-xlate.pl";
+if (`$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
+ =~ /GNU assembler version ([2-9]\.[0-9]+)/) {
+ $avx = ($1>=2.19) + ($1>=2.22);
+}
+
+if (!$avx && $win64 && ($flavour =~ /nasm/ || $ENV{ASM} =~ /nasm/) &&
+ `nasm -v 2>&1` =~ /NASM version ([2-9]\.[0-9]+)/) {
+ $avx = ($1>=2.09) + ($1>=2.10);
+}
+
+if (!$avx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
+ `ml64 2>&1` =~ /Version ([0-9]+)\./) {
+ $avx = ($1>=10) + ($1>=11);
+}
+
+if (!$avx && `$ENV{CC} -v 2>&1` =~ /(^clang version|based on LLVM) ([3-9]\.[0-9]+)/) {
+ $avx = ($2>=3.0) + ($2>3.0);
+}
+
open OUT,"| \"$^X\" $xlate $flavour $output";
*STDOUT=*OUT;
+$do4xaggr=1;
+
# common register layout
$nlo="%rax";
$nhi="%rbx";
@@ -160,6 +221,7 @@ ___
$code=<<___;
.text
+.extern OPENSSL_ia32cap_P
.globl gcm_gmult_4bit
.type gcm_gmult_4bit,\@function,2
@@ -352,19 +414,27 @@ ___
($T1,$T2,$T3)=("%xmm3","%xmm4","%xmm5");
sub clmul64x64_T2 { # minimal register pressure
-my ($Xhi,$Xi,$Hkey,$modulo)=@_;
+my ($Xhi,$Xi,$Hkey,$HK)=@_;
-$code.=<<___ if (!defined($modulo));
+if (!defined($HK)) { $HK = $T2;
+$code.=<<___;
movdqa $Xi,$Xhi #
pshufd \$0b01001110,$Xi,$T1
pshufd \$0b01001110,$Hkey,$T2
pxor $Xi,$T1 #
pxor $Hkey,$T2
___
+} else {
+$code.=<<___;
+ movdqa $Xi,$Xhi #
+ pshufd \$0b01001110,$Xi,$T1
+ pxor $Xi,$T1 #
+___
+}
$code.=<<___;
pclmulqdq \$0x00,$Hkey,$Xi #######
pclmulqdq \$0x11,$Hkey,$Xhi #######
- pclmulqdq \$0x00,$T2,$T1 #######
+ pclmulqdq \$0x00,$HK,$T1 #######
pxor $Xi,$T1 #
pxor $Xhi,$T1 #
@@ -376,42 +446,53 @@ $code.=<<___;
___
}
-sub reduction_alg9 { # 17/13 times faster than Intel version
+sub reduction_alg9 { # 17/11 times faster than Intel version
my ($Xhi,$Xi) = @_;
$code.=<<___;
# 1st phase
- movdqa $Xi,$T1 #
+ movdqa $Xi,$T2 #
+ movdqa $Xi,$T1
+ psllq \$5,$Xi
+ pxor $Xi,$T1 #
psllq \$1,$Xi
pxor $T1,$Xi #
- psllq \$5,$Xi #
- pxor $T1,$Xi #
psllq \$57,$Xi #
- movdqa $Xi,$T2 #
+ movdqa $Xi,$T1 #
pslldq \$8,$Xi
- psrldq \$8,$T2 #
- pxor $T1,$Xi
- pxor $T2,$Xhi #
+ psrldq \$8,$T1 #
+ pxor $T2,$Xi
+ pxor $T1,$Xhi #
# 2nd phase
movdqa $Xi,$T2
+ psrlq \$1,$Xi
+ pxor $T2,$Xhi #
+ pxor $Xi,$T2
psrlq \$5,$Xi
pxor $T2,$Xi #
psrlq \$1,$Xi #
- pxor $T2,$Xi #
- pxor $Xhi,$T2
- psrlq \$1,$Xi #
- pxor $T2,$Xi #
+ pxor $Xhi,$Xi #
___
}
{ my ($Htbl,$Xip)=@_4args;
+ my $HK="%xmm6";
$code.=<<___;
.globl gcm_init_clmul
.type gcm_init_clmul,\@abi-omnipotent
.align 16
gcm_init_clmul:
+.L_init_clmul:
+___
+$code.=<<___ if ($win64);
+.LSEH_begin_gcm_init_clmul:
+ # I can't trust assembler to use specific encoding:-(
+ .byte 0x48,0x83,0xec,0x18 #sub $0x18,%rsp
+ .byte 0x0f,0x29,0x34,0x24 #movaps %xmm6,(%rsp)
+___
+$code.=<<___;
movdqu ($Xip),$Hkey
pshufd \$0b01001110,$Hkey,$Hkey # dword swap
@@ -430,13 +511,47 @@ gcm_init_clmul:
pxor $T3,$Hkey # if(carry) H^=0x1c2_polynomial
# calculate H^2
+ pshufd \$0b01001110,$Hkey,$HK
movdqa $Hkey,$Xi
+ pxor $Hkey,$HK
___
- &clmul64x64_T2 ($Xhi,$Xi,$Hkey);
+ &clmul64x64_T2 ($Xhi,$Xi,$Hkey,$HK);
&reduction_alg9 ($Xhi,$Xi);
$code.=<<___;
- movdqu $Hkey,($Htbl) # save H
- movdqu $Xi,16($Htbl) # save H^2
+ pshufd \$0b01001110,$Hkey,$T1
+ pshufd \$0b01001110,$Xi,$T2
+ pxor $Hkey,$T1 # Karatsuba pre-processing
+ movdqu $Hkey,0x00($Htbl) # save H
+ pxor $Xi,$T2 # Karatsuba pre-processing
+ movdqu $Xi,0x10($Htbl) # save H^2
+ palignr \$8,$T1,$T2 # low part is H.lo^H.hi...
+ movdqu $T2,0x20($Htbl) # save Karatsuba "salt"
+___
+if ($do4xaggr) {
+ &clmul64x64_T2 ($Xhi,$Xi,$Hkey,$HK); # H^3
+ &reduction_alg9 ($Xhi,$Xi);
+$code.=<<___;
+ movdqa $Xi,$T3
+___
+ &clmul64x64_T2 ($Xhi,$Xi,$Hkey,$HK); # H^4
+ &reduction_alg9 ($Xhi,$Xi);
+$code.=<<___;
+ pshufd \$0b01001110,$T3,$T1
+ pshufd \$0b01001110,$Xi,$T2
+ pxor $T3,$T1 # Karatsuba pre-processing
+ movdqu $T3,0x30($Htbl) # save H^3
+ pxor $Xi,$T2 # Karatsuba pre-processing
+ movdqu $Xi,0x40($Htbl) # save H^4
+ palignr \$8,$T1,$T2 # low part is H^3.lo^H^3.hi...
+ movdqu $T2,0x50($Htbl) # save Karatsuba "salt"
+___
+}
+$code.=<<___ if ($win64);
+ movaps (%rsp),%xmm6
+ lea 0x18(%rsp),%rsp
+.LSEH_end_gcm_init_clmul:
+___
+$code.=<<___;
ret
.size gcm_init_clmul,.-gcm_init_clmul
___
@@ -449,13 +564,38 @@ $code.=<<___;
.type gcm_gmult_clmul,\@abi-omnipotent
.align 16
gcm_gmult_clmul:
+.L_gmult_clmul:
movdqu ($Xip),$Xi
movdqa .Lbswap_mask(%rip),$T3
movdqu ($Htbl),$Hkey
+ movdqu 0x20($Htbl),$T2
pshufb $T3,$Xi
___
- &clmul64x64_T2 ($Xhi,$Xi,$Hkey);
- &reduction_alg9 ($Xhi,$Xi);
+ &clmul64x64_T2 ($Xhi,$Xi,$Hkey,$T2);
+$code.=<<___ if (0 || (&reduction_alg9($Xhi,$Xi)&&0));
+ # experimental alternative. special thing about is that there
+ # no dependency between the two multiplications...
+ mov \$`0xE1<<1`,%eax
+ mov \$0xA040608020C0E000,%r10 # ((7..0)·0xE0)&0xff
+ mov \$0x07,%r11d
+ movq %rax,$T1
+ movq %r10,$T2
+ movq %r11,$T3 # borrow $T3
+ pand $Xi,$T3
+ pshufb $T3,$T2 # ($Xi&7)·0xE0
+ movq %rax,$T3
+ pclmulqdq \$0x00,$Xi,$T1 # ·(0xE1<<1)
+ pxor $Xi,$T2
+ pslldq \$15,$T2
+ paddd $T2,$T2 # <<(64+56+1)
+ pxor $T2,$Xi
+ pclmulqdq \$0x01,$T3,$Xi
+ movdqa .Lbswap_mask(%rip),$T3 # reload $T3
+ psrldq \$1,$T1
+ pxor $T1,$Xhi
+ pslldq \$7,$Xi
+ pxor $Xhi,$Xi
+___
$code.=<<___;
pshufb $T3,$Xi
movdqu $Xi,($Xip)
@@ -465,129 +605,327 @@ ___
}
{ my ($Xip,$Htbl,$inp,$len)=@_4args;
- my $Xn="%xmm6";
- my $Xhn="%xmm7";
- my $Hkey2="%xmm8";
- my $T1n="%xmm9";
- my $T2n="%xmm10";
+ my ($Xln,$Xmn,$Xhn,$Hkey2,$HK) = map("%xmm$_",(3..7));
+ my ($T1,$T2,$T3)=map("%xmm$_",(8..10));
$code.=<<___;
.globl gcm_ghash_clmul
.type gcm_ghash_clmul,\@abi-omnipotent
-.align 16
+.align 32
gcm_ghash_clmul:
+.L_ghash_clmul:
___
$code.=<<___ if ($win64);
+ lea -0x88(%rsp),%rax
.LSEH_begin_gcm_ghash_clmul:
# I can't trust assembler to use specific encoding:-(
- .byte 0x48,0x83,0xec,0x58 #sub \$0x58,%rsp
- .byte 0x0f,0x29,0x34,0x24 #movaps %xmm6,(%rsp)
- .byte 0x0f,0x29,0x7c,0x24,0x10 #movdqa %xmm7,0x10(%rsp)
- .byte 0x44,0x0f,0x29,0x44,0x24,0x20 #movaps %xmm8,0x20(%rsp)
- .byte 0x44,0x0f,0x29,0x4c,0x24,0x30 #movaps %xmm9,0x30(%rsp)
- .byte 0x44,0x0f,0x29,0x54,0x24,0x40 #movaps %xmm10,0x40(%rsp)
+ .byte 0x48,0x8d,0x60,0xe0 #lea -0x20(%rax),%rsp
+ .byte 0x0f,0x29,0x70,0xe0 #movaps %xmm6,-0x20(%rax)
+ .byte 0x0f,0x29,0x78,0xf0 #movaps %xmm7,-0x10(%rax)
+ .byte 0x44,0x0f,0x29,0x00 #movaps %xmm8,0(%rax)
+ .byte 0x44,0x0f,0x29,0x48,0x10 #movaps %xmm9,0x10(%rax)
+ .byte 0x44,0x0f,0x29,0x50,0x20 #movaps %xmm10,0x20(%rax)
+ .byte 0x44,0x0f,0x29,0x58,0x30 #movaps %xmm11,0x30(%rax)
+ .byte 0x44,0x0f,0x29,0x60,0x40 #movaps %xmm12,0x40(%rax)
+ .byte 0x44,0x0f,0x29,0x68,0x50 #movaps %xmm13,0x50(%rax)
+ .byte 0x44,0x0f,0x29,0x70,0x60 #movaps %xmm14,0x60(%rax)
+ .byte 0x44,0x0f,0x29,0x78,0x70 #movaps %xmm15,0x70(%rax)
___
$code.=<<___;
movdqa .Lbswap_mask(%rip),$T3
movdqu ($Xip),$Xi
movdqu ($Htbl),$Hkey
+ movdqu 0x20($Htbl),$HK
pshufb $T3,$Xi
sub \$0x10,$len
jz .Lodd_tail
- movdqu 16($Htbl),$Hkey2
+ movdqu 0x10($Htbl),$Hkey2
+___
+if ($do4xaggr) {
+my ($Xl,$Xm,$Xh,$Hkey3,$Hkey4)=map("%xmm$_",(11..15));
+
+$code.=<<___;
+ mov OPENSSL_ia32cap_P+4(%rip),%eax
+ cmp \$0x30,$len
+ jb .Lskip4x
+
+ and \$`1<<26|1<<22`,%eax # isolate MOVBE+XSAVE
+ cmp \$`1<<22`,%eax # check for MOVBE without XSAVE
+ je .Lskip4x
+
+ sub \$0x30,$len
+ mov \$0xA040608020C0E000,%rax # ((7..0)·0xE0)&0xff
+ movdqu 0x30($Htbl),$Hkey3
+ movdqu 0x40($Htbl),$Hkey4
+
+ #######
+ # Xi+4 =[(H*Ii+3) + (H^2*Ii+2) + (H^3*Ii+1) + H^4*(Ii+Xi)] mod P
+ #
+ movdqu 0x30($inp),$Xln
+ movdqu 0x20($inp),$Xl
+ pshufb $T3,$Xln
+ pshufb $T3,$Xl
+ movdqa $Xln,$Xhn
+ pshufd \$0b01001110,$Xln,$Xmn
+ pxor $Xln,$Xmn
+ pclmulqdq \$0x00,$Hkey,$Xln
+ pclmulqdq \$0x11,$Hkey,$Xhn
+ pclmulqdq \$0x00,$HK,$Xmn
+
+ movdqa $Xl,$Xh
+ pshufd \$0b01001110,$Xl,$Xm
+ pxor $Xl,$Xm
+ pclmulqdq \$0x00,$Hkey2,$Xl
+ pclmulqdq \$0x11,$Hkey2,$Xh
+ pclmulqdq \$0x10,$HK,$Xm
+ xorps $Xl,$Xln
+ xorps $Xh,$Xhn
+ movups 0x50($Htbl),$HK
+ xorps $Xm,$Xmn
+
+ movdqu 0x10($inp),$Xl
+ movdqu 0($inp),$T1
+ pshufb $T3,$Xl
+ pshufb $T3,$T1
+ movdqa $Xl,$Xh
+ pshufd \$0b01001110,$Xl,$Xm
+ pxor $T1,$Xi
+ pxor $Xl,$Xm
+ pclmulqdq \$0x00,$Hkey3,$Xl
+ movdqa $Xi,$Xhi
+ pshufd \$0b01001110,$Xi,$T1
+ pxor $Xi,$T1
+ pclmulqdq \$0x11,$Hkey3,$Xh
+ pclmulqdq \$0x00,$HK,$Xm
+ xorps $Xl,$Xln
+ xorps $Xh,$Xhn
+
+ lea 0x40($inp),$inp
+ sub \$0x40,$len
+ jc .Ltail4x
+
+ jmp .Lmod4_loop
+.align 32
+.Lmod4_loop:
+ pclmulqdq \$0x00,$Hkey4,$Xi
+ xorps $Xm,$Xmn
+ movdqu 0x30($inp),$Xl
+ pshufb $T3,$Xl
+ pclmulqdq \$0x11,$Hkey4,$Xhi
+ xorps $Xln,$Xi
+ movdqu 0x20($inp),$Xln
+ movdqa $Xl,$Xh
+ pclmulqdq \$0x10,$HK,$T1
+ pshufd \$0b01001110,$Xl,$Xm
+ xorps $Xhn,$Xhi
+ pxor $Xl,$Xm
+ pshufb $T3,$Xln
+ movups 0x20($Htbl),$HK
+ xorps $Xmn,$T1
+ pclmulqdq \$0x00,$Hkey,$Xl
+ pshufd \$0b01001110,$Xln,$Xmn
+
+ pxor $Xi,$T1 # aggregated Karatsuba post-processing
+ movdqa $Xln,$Xhn
+ pxor $Xhi,$T1 #
+ pxor $Xln,$Xmn
+ movdqa $T1,$T2 #
+ pclmulqdq \$0x11,$Hkey,$Xh
+ pslldq \$8,$T1
+ psrldq \$8,$T2 #
+ pxor $T1,$Xi
+ movdqa .L7_mask(%rip),$T1
+ pxor $T2,$Xhi #
+ movq %rax,$T2
+
+ pand $Xi,$T1 # 1st phase
+ pshufb $T1,$T2 #
+ pxor $Xi,$T2 #
+ pclmulqdq \$0x00,$HK,$Xm
+ psllq \$57,$T2 #
+ movdqa $T2,$T1 #
+ pslldq \$8,$T2
+ pclmulqdq \$0x00,$Hkey2,$Xln
+ psrldq \$8,$T1 #
+ pxor $T2,$Xi
+ pxor $T1,$Xhi #
+ movdqu 0($inp),$T1
+
+ movdqa $Xi,$T2 # 2nd phase
+ psrlq \$1,$Xi
+ pclmulqdq \$0x11,$Hkey2,$Xhn
+ xorps $Xl,$Xln
+ movdqu 0x10($inp),$Xl
+ pshufb $T3,$Xl
+ pclmulqdq \$0x10,$HK,$Xmn
+ xorps $Xh,$Xhn
+ movups 0x50($Htbl),$HK
+ pshufb $T3,$T1
+ pxor $T2,$Xhi #
+ pxor $Xi,$T2
+ psrlq \$5,$Xi
+
+ movdqa $Xl,$Xh
+ pxor $Xm,$Xmn
+ pshufd \$0b01001110,$Xl,$Xm
+ pxor $T2,$Xi #
+ pxor $T1,$Xhi
+ pxor $Xl,$Xm
+ pclmulqdq \$0x00,$Hkey3,$Xl
+ psrlq \$1,$Xi #
+ pxor $Xhi,$Xi #
+ movdqa $Xi,$Xhi
+ pclmulqdq \$0x11,$Hkey3,$Xh
+ xorps $Xl,$Xln
+ pshufd \$0b01001110,$Xi,$T1
+ pxor $Xi,$T1
+
+ pclmulqdq \$0x00,$HK,$Xm
+ xorps $Xh,$Xhn
+
+ lea 0x40($inp),$inp
+ sub \$0x40,$len
+ jnc .Lmod4_loop
+
+.Ltail4x:
+ pclmulqdq \$0x00,$Hkey4,$Xi
+ pclmulqdq \$0x11,$Hkey4,$Xhi
+ pclmulqdq \$0x10,$HK,$T1
+ xorps $Xm,$Xmn
+ xorps $Xln,$Xi
+ xorps $Xhn,$Xhi
+ pxor $Xi,$Xhi # aggregated Karatsuba post-processing
+ pxor $Xmn,$T1
+
+ pxor $Xhi,$T1 #
+ pxor $Xi,$Xhi
+
+ movdqa $T1,$T2 #
+ psrldq \$8,$T1
+ pslldq \$8,$T2 #
+ pxor $T1,$Xhi
+ pxor $T2,$Xi #
+___
+ &reduction_alg9($Xhi,$Xi);
+$code.=<<___;
+ add \$0x40,$len
+ jz .Ldone
+ movdqu 0x20($Htbl),$HK
+ sub \$0x10,$len
+ jz .Lodd_tail
+.Lskip4x:
+___
+}
+$code.=<<___;
#######
# Xi+2 =[H*(Ii+1 + Xi+1)] mod P =
# [(H*Ii+1) + (H*Xi+1)] mod P =
# [(H*Ii+1) + H^2*(Ii+Xi)] mod P
#
movdqu ($inp),$T1 # Ii
- movdqu 16($inp),$Xn # Ii+1
+ movdqu 16($inp),$Xln # Ii+1
pshufb $T3,$T1
- pshufb $T3,$Xn
+ pshufb $T3,$Xln
pxor $T1,$Xi # Ii+Xi
-___
- &clmul64x64_T2 ($Xhn,$Xn,$Hkey); # H*Ii+1
-$code.=<<___;
- movdqa $Xi,$Xhi #
- pshufd \$0b01001110,$Xi,$T1
- pshufd \$0b01001110,$Hkey2,$T2
- pxor $Xi,$T1 #
- pxor $Hkey2,$T2
+
+ movdqa $Xln,$Xhn
+ pshufd \$0b01001110,$Xln,$Xmn
+ pxor $Xln,$Xmn
+ pclmulqdq \$0x00,$Hkey,$Xln
+ pclmulqdq \$0x11,$Hkey,$Xhn
+ pclmulqdq \$0x00,$HK,$Xmn
lea 32($inp),$inp # i+=2
+ nop
sub \$0x20,$len
jbe .Leven_tail
+ nop
+ jmp .Lmod_loop
+.align 32
.Lmod_loop:
-___
- &clmul64x64_T2 ($Xhi,$Xi,$Hkey2,1); # H^2*(Ii+Xi)
-$code.=<<___;
- movdqu ($inp),$T1 # Ii
- pxor $Xn,$Xi # (H*Ii+1) + H^2*(Ii+Xi)
- pxor $Xhn,$Xhi
+ movdqa $Xi,$Xhi
+ movdqa $Xmn,$T1
+ pshufd \$0b01001110,$Xi,$Xmn #
+ pxor $Xi,$Xmn #
- movdqu 16($inp),$Xn # Ii+1
- pshufb $T3,$T1
- pshufb $T3,$Xn
+ pclmulqdq \$0x00,$Hkey2,$Xi
+ pclmulqdq \$0x11,$Hkey2,$Xhi
+ pclmulqdq \$0x10,$HK,$Xmn
- movdqa $Xn,$Xhn #
- pshufd \$0b01001110,$Xn,$T1n
- pshufd \$0b01001110,$Hkey,$T2n
- pxor $Xn,$T1n #
- pxor $Hkey,$T2n
- pxor $T1,$Xhi # "Ii+Xi", consume early
+ pxor $Xln,$Xi # (H*Ii+1) + H^2*(Ii+Xi)
+ pxor $Xhn,$Xhi
+ movdqu ($inp),$T2 # Ii
+ pxor $Xi,$T1 # aggregated Karatsuba post-processing
+ pshufb $T3,$T2
+ movdqu 16($inp),$Xln # Ii+1
+
+ pxor $Xhi,$T1
+ pxor $T2,$Xhi # "Ii+Xi", consume early
+ pxor $T1,$Xmn
+ pshufb $T3,$Xln
+ movdqa $Xmn,$T1 #
+ psrldq \$8,$T1
+ pslldq \$8,$Xmn #
+ pxor $T1,$Xhi
+ pxor $Xmn,$Xi #
+
+ movdqa $Xln,$Xhn #
- movdqa $Xi,$T1 # 1st phase
+ movdqa $Xi,$T2 # 1st phase
+ movdqa $Xi,$T1
+ psllq \$5,$Xi
+ pxor $Xi,$T1 #
+ pclmulqdq \$0x00,$Hkey,$Xln #######
psllq \$1,$Xi
pxor $T1,$Xi #
- psllq \$5,$Xi #
- pxor $T1,$Xi #
- pclmulqdq \$0x00,$Hkey,$Xn #######
psllq \$57,$Xi #
- movdqa $Xi,$T2 #
+ movdqa $Xi,$T1 #
pslldq \$8,$Xi
- psrldq \$8,$T2 #
- pxor $T1,$Xi
- pxor $T2,$Xhi #
+ psrldq \$8,$T1 #
+ pxor $T2,$Xi
+ pshufd \$0b01001110,$Xhn,$Xmn
+ pxor $T1,$Xhi #
+ pxor $Xhn,$Xmn #
- pclmulqdq \$0x11,$Hkey,$Xhn #######
movdqa $Xi,$T2 # 2nd phase
+ psrlq \$1,$Xi
+ pclmulqdq \$0x11,$Hkey,$Xhn #######
+ pxor $T2,$Xhi #
+ pxor $Xi,$T2
psrlq \$5,$Xi
pxor $T2,$Xi #
+ lea 32($inp),$inp
psrlq \$1,$Xi #
- pxor $T2,$Xi #
- pxor $Xhi,$T2
- psrlq \$1,$Xi #
- pxor $T2,$Xi #
+ pclmulqdq \$0x00,$HK,$Xmn #######
+ pxor $Xhi,$Xi #
- pclmulqdq \$0x00,$T2n,$T1n #######
- movdqa $Xi,$Xhi #
- pshufd \$0b01001110,$Xi,$T1
- pshufd \$0b01001110,$Hkey2,$T2
- pxor $Xi,$T1 #
- pxor $Hkey2,$T2
-
- pxor $Xn,$T1n #
- pxor $Xhn,$T1n #
- movdqa $T1n,$T2n #
- psrldq \$8,$T1n
- pslldq \$8,$T2n #
- pxor $T1n,$Xhn
- pxor $T2n,$Xn #
-
- lea 32($inp),$inp
sub \$0x20,$len
ja .Lmod_loop
.Leven_tail:
-___
- &clmul64x64_T2 ($Xhi,$Xi,$Hkey2,1); # H^2*(Ii+Xi)
-$code.=<<___;
- pxor $Xn,$Xi # (H*Ii+1) + H^2*(Ii+Xi)
+ movdqa $Xi,$Xhi
+ movdqa $Xmn,$T1
+ pshufd \$0b01001110,$Xi,$Xmn #
+ pxor $Xi,$Xmn #
+
+ pclmulqdq \$0x00,$Hkey2,$Xi
+ pclmulqdq \$0x11,$Hkey2,$Xhi
+ pclmulqdq \$0x10,$HK,$Xmn
+
+ pxor $Xln,$Xi # (H*Ii+1) + H^2*(Ii+Xi)
pxor $Xhn,$Xhi
+ pxor $Xi,$T1
+ pxor $Xhi,$T1
+ pxor $T1,$Xmn
+ movdqa $Xmn,$T1 #
+ psrldq \$8,$T1
+ pslldq \$8,$Xmn #
+ pxor $T1,$Xhi
+ pxor $Xmn,$Xi #
___
&reduction_alg9 ($Xhi,$Xi);
$code.=<<___;
@@ -599,7 +937,7 @@ $code.=<<___;
pshufb $T3,$T1
pxor $T1,$Xi # Ii+Xi
___
- &clmul64x64_T2 ($Xhi,$Xi,$Hkey); # H*(Ii+Xi)
+ &clmul64x64_T2 ($Xhi,$Xi,$Hkey,$HK); # H*(Ii+Xi)
&reduction_alg9 ($Xhi,$Xi);
$code.=<<___;
.Ldone:
@@ -612,21 +950,607 @@ $code.=<<___ if ($win64);
movaps 0x20(%rsp),%xmm8
movaps 0x30(%rsp),%xmm9
movaps 0x40(%rsp),%xmm10
- add \$0x58,%rsp
+ movaps 0x50(%rsp),%xmm11
+ movaps 0x60(%rsp),%xmm12
+ movaps 0x70(%rsp),%xmm13
+ movaps 0x80(%rsp),%xmm14
+ movaps 0x90(%rsp),%xmm15
+ lea 0xa8(%rsp),%rsp
+.LSEH_end_gcm_ghash_clmul:
___
$code.=<<___;
ret
-.LSEH_end_gcm_ghash_clmul:
.size gcm_ghash_clmul,.-gcm_ghash_clmul
___
}
+
+$code.=<<___;
+.globl gcm_init_avx
+.type gcm_init_avx,\@abi-omnipotent
+.align 32
+gcm_init_avx:
+___
+if ($avx) {
+my ($Htbl,$Xip)=@_4args;
+my $HK="%xmm6";
+
+$code.=<<___ if ($win64);
+.LSEH_begin_gcm_init_avx:
+ # I can't trust assembler to use specific encoding:-(
+ .byte 0x48,0x83,0xec,0x18 #sub $0x18,%rsp
+ .byte 0x0f,0x29,0x34,0x24 #movaps %xmm6,(%rsp)
+___
+$code.=<<___;
+ vzeroupper
+
+ vmovdqu ($Xip),$Hkey
+ vpshufd \$0b01001110,$Hkey,$Hkey # dword swap
+
+ # <<1 twist
+ vpshufd \$0b11111111,$Hkey,$T2 # broadcast uppermost dword
+ vpsrlq \$63,$Hkey,$T1
+ vpsllq \$1,$Hkey,$Hkey
+ vpxor $T3,$T3,$T3 #
+ vpcmpgtd $T2,$T3,$T3 # broadcast carry bit
+ vpslldq \$8,$T1,$T1
+ vpor $T1,$Hkey,$Hkey # H<<=1
+
+ # magic reduction
+ vpand .L0x1c2_polynomial(%rip),$T3,$T3
+ vpxor $T3,$Hkey,$Hkey # if(carry) H^=0x1c2_polynomial
+
+ vpunpckhqdq $Hkey,$Hkey,$HK
+ vmovdqa $Hkey,$Xi
+ vpxor $Hkey,$HK,$HK
+ mov \$4,%r10 # up to H^8
+ jmp .Linit_start_avx
+___
+
+sub clmul64x64_avx {
+my ($Xhi,$Xi,$Hkey,$HK)=@_;
+
+if (!defined($HK)) { $HK = $T2;
+$code.=<<___;
+ vpunpckhqdq $Xi,$Xi,$T1
+ vpunpckhqdq $Hkey,$Hkey,$T2
+ vpxor $Xi,$T1,$T1 #
+ vpxor $Hkey,$T2,$T2
+___
+} else {
+$code.=<<___;
+ vpunpckhqdq $Xi,$Xi,$T1
+ vpxor $Xi,$T1,$T1 #
+___
+}
+$code.=<<___;
+ vpclmulqdq \$0x11,$Hkey,$Xi,$Xhi #######
+ vpclmulqdq \$0x00,$Hkey,$Xi,$Xi #######
+ vpclmulqdq \$0x00,$HK,$T1,$T1 #######
+ vpxor $Xi,$Xhi,$T2 #
+ vpxor $T2,$T1,$T1 #
+
+ vpslldq \$8,$T1,$T2 #
+ vpsrldq \$8,$T1,$T1
+ vpxor $T2,$Xi,$Xi #
+ vpxor $T1,$Xhi,$Xhi
+___
+}
+
+sub reduction_avx {
+my ($Xhi,$Xi) = @_;
+
+$code.=<<___;
+ vpsllq \$57,$Xi,$T1 # 1st phase
+ vpsllq \$62,$Xi,$T2
+ vpxor $T1,$T2,$T2 #
+ vpsllq \$63,$Xi,$T1
+ vpxor $T1,$T2,$T2 #
+ vpslldq \$8,$T2,$T1 #
+ vpsrldq \$8,$T2,$T2
+ vpxor $T1,$Xi,$Xi #
+ vpxor $T2,$Xhi,$Xhi
+
+ vpsrlq \$1,$Xi,$T2 # 2nd phase
+ vpxor $Xi,$Xhi,$Xhi
+ vpxor $T2,$Xi,$Xi #
+ vpsrlq \$5,$T2,$T2
+ vpxor $T2,$Xi,$Xi #
+ vpsrlq \$1,$Xi,$Xi #
+ vpxor $Xhi,$Xi,$Xi #
+___
+}
$code.=<<___;
+.align 32
+.Linit_loop_avx:
+ vpalignr \$8,$T1,$T2,$T3 # low part is H.lo^H.hi...
+ vmovdqu $T3,-0x10($Htbl) # save Karatsuba "salt"
+___
+ &clmul64x64_avx ($Xhi,$Xi,$Hkey,$HK); # calculate H^3,5,7
+ &reduction_avx ($Xhi,$Xi);
+$code.=<<___;
+.Linit_start_avx:
+ vmovdqa $Xi,$T3
+___
+ &clmul64x64_avx ($Xhi,$Xi,$Hkey,$HK); # calculate H^2,4,6,8
+ &reduction_avx ($Xhi,$Xi);
+$code.=<<___;
+ vpshufd \$0b01001110,$T3,$T1
+ vpshufd \$0b01001110,$Xi,$T2
+ vpxor $T3,$T1,$T1 # Karatsuba pre-processing
+ vmovdqu $T3,0x00($Htbl) # save H^1,3,5,7
+ vpxor $Xi,$T2,$T2 # Karatsuba pre-processing
+ vmovdqu $Xi,0x10($Htbl) # save H^2,4,6,8
+ lea 0x30($Htbl),$Htbl
+ sub \$1,%r10
+ jnz .Linit_loop_avx
+
+ vpalignr \$8,$T2,$T1,$T3 # last "salt" is flipped
+ vmovdqu $T3,-0x10($Htbl)
+
+ vzeroupper
+___
+$code.=<<___ if ($win64);
+ movaps (%rsp),%xmm6
+ lea 0x18(%rsp),%rsp
+.LSEH_end_gcm_init_avx:
+___
+$code.=<<___;
+ ret
+.size gcm_init_avx,.-gcm_init_avx
+___
+} else {
+$code.=<<___;
+ jmp .L_init_clmul
+.size gcm_init_avx,.-gcm_init_avx
+___
+}
+
+$code.=<<___;
+.globl gcm_gmult_avx
+.type gcm_gmult_avx,\@abi-omnipotent
+.align 32
+gcm_gmult_avx:
+ jmp .L_gmult_clmul
+.size gcm_gmult_avx,.-gcm_gmult_avx
+___
+
+$code.=<<___;
+.globl gcm_ghash_avx
+.type gcm_ghash_avx,\@abi-omnipotent
+.align 32
+gcm_ghash_avx:
+___
+if ($avx) {
+my ($Xip,$Htbl,$inp,$len)=@_4args;
+my ($Xlo,$Xhi,$Xmi,
+ $Zlo,$Zhi,$Zmi,
+ $Hkey,$HK,$T1,$T2,
+ $Xi,$Xo,$Tred,$bswap,$Ii,$Ij) = map("%xmm$_",(0..15));
+
+$code.=<<___ if ($win64);
+ lea -0x88(%rsp),%rax
+.LSEH_begin_gcm_ghash_avx:
+ # I can't trust assembler to use specific encoding:-(
+ .byte 0x48,0x8d,0x60,0xe0 #lea -0x20(%rax),%rsp
+ .byte 0x0f,0x29,0x70,0xe0 #movaps %xmm6,-0x20(%rax)
+ .byte 0x0f,0x29,0x78,0xf0 #movaps %xmm7,-0x10(%rax)
+ .byte 0x44,0x0f,0x29,0x00 #movaps %xmm8,0(%rax)
+ .byte 0x44,0x0f,0x29,0x48,0x10 #movaps %xmm9,0x10(%rax)
+ .byte 0x44,0x0f,0x29,0x50,0x20 #movaps %xmm10,0x20(%rax)
+ .byte 0x44,0x0f,0x29,0x58,0x30 #movaps %xmm11,0x30(%rax)
+ .byte 0x44,0x0f,0x29,0x60,0x40 #movaps %xmm12,0x40(%rax)
+ .byte 0x44,0x0f,0x29,0x68,0x50 #movaps %xmm13,0x50(%rax)
+ .byte 0x44,0x0f,0x29,0x70,0x60 #movaps %xmm14,0x60(%rax)
+ .byte 0x44,0x0f,0x29,0x78,0x70 #movaps %xmm15,0x70(%rax)
+___
+$code.=<<___;
+ vzeroupper
+
+ vmovdqu ($Xip),$Xi # load $Xi
+ lea .L0x1c2_polynomial(%rip),%r10
+ lea 0x40($Htbl),$Htbl # size optimization
+ vmovdqu .Lbswap_mask(%rip),$bswap
+ vpshufb $bswap,$Xi,$Xi
+ cmp \$0x80,$len
+ jb .Lshort_avx
+ sub \$0x80,$len
+
+ vmovdqu 0x70($inp),$Ii # I[7]
+ vmovdqu 0x00-0x40($Htbl),$Hkey # $Hkey^1
+ vpshufb $bswap,$Ii,$Ii
+ vmovdqu 0x20-0x40($Htbl),$HK
+
+ vpunpckhqdq $Ii,$Ii,$T2
+ vmovdqu 0x60($inp),$Ij # I[6]
+ vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo
+ vpxor $Ii,$T2,$T2
+ vpshufb $bswap,$Ij,$Ij
+ vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi
+ vmovdqu 0x10-0x40($Htbl),$Hkey # $Hkey^2
+ vpunpckhqdq $Ij,$Ij,$T1
+ vmovdqu 0x50($inp),$Ii # I[5]
+ vpclmulqdq \$0x00,$HK,$T2,$Xmi
+ vpxor $Ij,$T1,$T1
+
+ vpshufb $bswap,$Ii,$Ii
+ vpclmulqdq \$0x00,$Hkey,$Ij,$Zlo
+ vpunpckhqdq $Ii,$Ii,$T2
+ vpclmulqdq \$0x11,$Hkey,$Ij,$Zhi
+ vmovdqu 0x30-0x40($Htbl),$Hkey # $Hkey^3
+ vpxor $Ii,$T2,$T2
+ vmovdqu 0x40($inp),$Ij # I[4]
+ vpclmulqdq \$0x10,$HK,$T1,$Zmi
+ vmovdqu 0x50-0x40($Htbl),$HK
+
+ vpshufb $bswap,$Ij,$Ij
+ vpxor $Xlo,$Zlo,$Zlo
+ vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo
+ vpxor $Xhi,$Zhi,$Zhi
+ vpunpckhqdq $Ij,$Ij,$T1
+ vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi
+ vmovdqu 0x40-0x40($Htbl),$Hkey # $Hkey^4
+ vpxor $Xmi,$Zmi,$Zmi
+ vpclmulqdq \$0x00,$HK,$T2,$Xmi
+ vpxor $Ij,$T1,$T1
+
+ vmovdqu 0x30($inp),$Ii # I[3]
+ vpxor $Zlo,$Xlo,$Xlo
+ vpclmulqdq \$0x00,$Hkey,$Ij,$Zlo
+ vpxor $Zhi,$Xhi,$Xhi
+ vpshufb $bswap,$Ii,$Ii
+ vpclmulqdq \$0x11,$Hkey,$Ij,$Zhi
+ vmovdqu 0x60-0x40($Htbl),$Hkey # $Hkey^5
+ vpxor $Zmi,$Xmi,$Xmi
+ vpunpckhqdq $Ii,$Ii,$T2
+ vpclmulqdq \$0x10,$HK,$T1,$Zmi
+ vmovdqu 0x80-0x40($Htbl),$HK
+ vpxor $Ii,$T2,$T2
+
+ vmovdqu 0x20($inp),$Ij # I[2]
+ vpxor $Xlo,$Zlo,$Zlo
+ vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo
+ vpxor $Xhi,$Zhi,$Zhi
+ vpshufb $bswap,$Ij,$Ij
+ vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi
+ vmovdqu 0x70-0x40($Htbl),$Hkey # $Hkey^6
+ vpxor $Xmi,$Zmi,$Zmi
+ vpunpckhqdq $Ij,$Ij,$T1
+ vpclmulqdq \$0x00,$HK,$T2,$Xmi
+ vpxor $Ij,$T1,$T1
+
+ vmovdqu 0x10($inp),$Ii # I[1]
+ vpxor $Zlo,$Xlo,$Xlo
+ vpclmulqdq \$0x00,$Hkey,$Ij,$Zlo
+ vpxor $Zhi,$Xhi,$Xhi
+ vpshufb $bswap,$Ii,$Ii
+ vpclmulqdq \$0x11,$Hkey,$Ij,$Zhi
+ vmovdqu 0x90-0x40($Htbl),$Hkey # $Hkey^7
+ vpxor $Zmi,$Xmi,$Xmi
+ vpunpckhqdq $Ii,$Ii,$T2
+ vpclmulqdq \$0x10,$HK,$T1,$Zmi
+ vmovdqu 0xb0-0x40($Htbl),$HK
+ vpxor $Ii,$T2,$T2
+
+ vmovdqu ($inp),$Ij # I[0]
+ vpxor $Xlo,$Zlo,$Zlo
+ vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo
+ vpxor $Xhi,$Zhi,$Zhi
+ vpshufb $bswap,$Ij,$Ij
+ vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi
+ vmovdqu 0xa0-0x40($Htbl),$Hkey # $Hkey^8
+ vpxor $Xmi,$Zmi,$Zmi
+ vpclmulqdq \$0x10,$HK,$T2,$Xmi
+
+ lea 0x80($inp),$inp
+ cmp \$0x80,$len
+ jb .Ltail_avx
+
+ vpxor $Xi,$Ij,$Ij # accumulate $Xi
+ sub \$0x80,$len
+ jmp .Loop8x_avx
+
+.align 32
+.Loop8x_avx:
+ vpunpckhqdq $Ij,$Ij,$T1
+ vmovdqu 0x70($inp),$Ii # I[7]
+ vpxor $Xlo,$Zlo,$Zlo
+ vpxor $Ij,$T1,$T1
+ vpclmulqdq \$0x00,$Hkey,$Ij,$Xi
+ vpshufb $bswap,$Ii,$Ii
+ vpxor $Xhi,$Zhi,$Zhi
+ vpclmulqdq \$0x11,$Hkey,$Ij,$Xo
+ vmovdqu 0x00-0x40($Htbl),$Hkey # $Hkey^1
+ vpunpckhqdq $Ii,$Ii,$T2
+ vpxor $Xmi,$Zmi,$Zmi
+ vpclmulqdq \$0x00,$HK,$T1,$Tred
+ vmovdqu 0x20-0x40($Htbl),$HK
+ vpxor $Ii,$T2,$T2
+
+ vmovdqu 0x60($inp),$Ij # I[6]
+ vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo
+ vpxor $Zlo,$Xi,$Xi # collect result
+ vpshufb $bswap,$Ij,$Ij
+ vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi
+ vxorps $Zhi,$Xo,$Xo
+ vmovdqu 0x10-0x40($Htbl),$Hkey # $Hkey^2
+ vpunpckhqdq $Ij,$Ij,$T1
+ vpclmulqdq \$0x00,$HK, $T2,$Xmi
+ vpxor $Zmi,$Tred,$Tred
+ vxorps $Ij,$T1,$T1
+
+ vmovdqu 0x50($inp),$Ii # I[5]
+ vpxor $Xi,$Tred,$Tred # aggregated Karatsuba post-processing
+ vpclmulqdq \$0x00,$Hkey,$Ij,$Zlo
+ vpxor $Xo,$Tred,$Tred
+ vpslldq \$8,$Tred,$T2
+ vpxor $Xlo,$Zlo,$Zlo
+ vpclmulqdq \$0x11,$Hkey,$Ij,$Zhi
+ vpsrldq \$8,$Tred,$Tred
+ vpxor $T2, $Xi, $Xi
+ vmovdqu 0x30-0x40($Htbl),$Hkey # $Hkey^3
+ vpshufb $bswap,$Ii,$Ii
+ vxorps $Tred,$Xo, $Xo
+ vpxor $Xhi,$Zhi,$Zhi
+ vpunpckhqdq $Ii,$Ii,$T2
+ vpclmulqdq \$0x10,$HK, $T1,$Zmi
+ vmovdqu 0x50-0x40($Htbl),$HK
+ vpxor $Ii,$T2,$T2
+ vpxor $Xmi,$Zmi,$Zmi
+
+ vmovdqu 0x40($inp),$Ij # I[4]
+ vpalignr \$8,$Xi,$Xi,$Tred # 1st phase
+ vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo
+ vpshufb $bswap,$Ij,$Ij
+ vpxor $Zlo,$Xlo,$Xlo
+ vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi
+ vmovdqu 0x40-0x40($Htbl),$Hkey # $Hkey^4
+ vpunpckhqdq $Ij,$Ij,$T1
+ vpxor $Zhi,$Xhi,$Xhi
+ vpclmulqdq \$0x00,$HK, $T2,$Xmi
+ vxorps $Ij,$T1,$T1
+ vpxor $Zmi,$Xmi,$Xmi
+
+ vmovdqu 0x30($inp),$Ii # I[3]
+ vpclmulqdq \$0x10,(%r10),$Xi,$Xi
+ vpclmulqdq \$0x00,$Hkey,$Ij,$Zlo
+ vpshufb $bswap,$Ii,$Ii
+ vpxor $Xlo,$Zlo,$Zlo
+ vpclmulqdq \$0x11,$Hkey,$Ij,$Zhi
+ vmovdqu 0x60-0x40($Htbl),$Hkey # $Hkey^5
+ vpunpckhqdq $Ii,$Ii,$T2
+ vpxor $Xhi,$Zhi,$Zhi
+ vpclmulqdq \$0x10,$HK, $T1,$Zmi
+ vmovdqu 0x80-0x40($Htbl),$HK
+ vpxor $Ii,$T2,$T2
+ vpxor $Xmi,$Zmi,$Zmi
+
+ vmovdqu 0x20($inp),$Ij # I[2]
+ vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo
+ vpshufb $bswap,$Ij,$Ij
+ vpxor $Zlo,$Xlo,$Xlo
+ vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi
+ vmovdqu 0x70-0x40($Htbl),$Hkey # $Hkey^6
+ vpunpckhqdq $Ij,$Ij,$T1
+ vpxor $Zhi,$Xhi,$Xhi
+ vpclmulqdq \$0x00,$HK, $T2,$Xmi
+ vpxor $Ij,$T1,$T1
+ vpxor $Zmi,$Xmi,$Xmi
+ vxorps $Tred,$Xi,$Xi
+
+ vmovdqu 0x10($inp),$Ii # I[1]
+ vpalignr \$8,$Xi,$Xi,$Tred # 2nd phase
+ vpclmulqdq \$0x00,$Hkey,$Ij,$Zlo
+ vpshufb $bswap,$Ii,$Ii
+ vpxor $Xlo,$Zlo,$Zlo
+ vpclmulqdq \$0x11,$Hkey,$Ij,$Zhi
+ vmovdqu 0x90-0x40($Htbl),$Hkey # $Hkey^7
+ vpclmulqdq \$0x10,(%r10),$Xi,$Xi
+ vxorps $Xo,$Tred,$Tred
+ vpunpckhqdq $Ii,$Ii,$T2
+ vpxor $Xhi,$Zhi,$Zhi
+ vpclmulqdq \$0x10,$HK, $T1,$Zmi
+ vmovdqu 0xb0-0x40($Htbl),$HK
+ vpxor $Ii,$T2,$T2
+ vpxor $Xmi,$Zmi,$Zmi
+
+ vmovdqu ($inp),$Ij # I[0]
+ vpclmulqdq \$0x00,$Hkey,$Ii,$Xlo
+ vpshufb $bswap,$Ij,$Ij
+ vpclmulqdq \$0x11,$Hkey,$Ii,$Xhi
+ vmovdqu 0xa0-0x40($Htbl),$Hkey # $Hkey^8
+ vpxor $Tred,$Ij,$Ij
+ vpclmulqdq \$0x10,$HK, $T2,$Xmi
+ vpxor $Xi,$Ij,$Ij # accumulate $Xi
+
+ lea 0x80($inp),$inp
+ sub \$0x80,$len
+ jnc .Loop8x_avx
+
+ add \$0x80,$len
+ jmp .Ltail_no_xor_avx
+
+.align 32
+.Lshort_avx:
+ vmovdqu -0x10($inp,$len),$Ii # very last word
+ lea ($inp,$len),$inp
+ vmovdqu 0x00-0x40($Htbl),$Hkey # $Hkey^1
+ vmovdqu 0x20-0x40($Htbl),$HK
+ vpshufb $bswap,$Ii,$Ij
+
+ vmovdqa $Xlo,$Zlo # subtle way to zero $Zlo,
+ vmovdqa $Xhi,$Zhi # $Zhi and
+ vmovdqa $Xmi,$Zmi # $Zmi
+ sub \$0x10,$len
+ jz .Ltail_avx
+
+ vpunpckhqdq $Ij,$Ij,$T1
+ vpxor $Xlo,$Zlo,$Zlo
+ vpclmulqdq \$0x00,$Hkey,$Ij,$Xlo
+ vpxor $Ij,$T1,$T1
+ vmovdqu -0x20($inp),$Ii
+ vpxor $Xhi,$Zhi,$Zhi
+ vpclmulqdq \$0x11,$Hkey,$Ij,$Xhi
+ vmovdqu 0x10-0x40($Htbl),$Hkey # $Hkey^2
+ vpshufb $bswap,$Ii,$Ij
+ vpxor $Xmi,$Zmi,$Zmi
+ vpclmulqdq \$0x00,$HK,$T1,$Xmi
+ vpsrldq \$8,$HK,$HK
+ sub \$0x10,$len
+ jz .Ltail_avx
+
+ vpunpckhqdq $Ij,$Ij,$T1
+ vpxor $Xlo,$Zlo,$Zlo
+ vpclmulqdq \$0x00,$Hkey,$Ij,$Xlo
+ vpxor $Ij,$T1,$T1
+ vmovdqu -0x30($inp),$Ii
+ vpxor $Xhi,$Zhi,$Zhi
+ vpclmulqdq \$0x11,$Hkey,$Ij,$Xhi
+ vmovdqu 0x30-0x40($Htbl),$Hkey # $Hkey^3
+ vpshufb $bswap,$Ii,$Ij
+ vpxor $Xmi,$Zmi,$Zmi
+ vpclmulqdq \$0x00,$HK,$T1,$Xmi
+ vmovdqu 0x50-0x40($Htbl),$HK
+ sub \$0x10,$len
+ jz .Ltail_avx
+
+ vpunpckhqdq $Ij,$Ij,$T1
+ vpxor $Xlo,$Zlo,$Zlo
+ vpclmulqdq \$0x00,$Hkey,$Ij,$Xlo
+ vpxor $Ij,$T1,$T1
+ vmovdqu -0x40($inp),$Ii
+ vpxor $Xhi,$Zhi,$Zhi
+ vpclmulqdq \$0x11,$Hkey,$Ij,$Xhi
+ vmovdqu 0x40-0x40($Htbl),$Hkey # $Hkey^4
+ vpshufb $bswap,$Ii,$Ij
+ vpxor $Xmi,$Zmi,$Zmi
+ vpclmulqdq \$0x00,$HK,$T1,$Xmi
+ vpsrldq \$8,$HK,$HK
+ sub \$0x10,$len
+ jz .Ltail_avx
+
+ vpunpckhqdq $Ij,$Ij,$T1
+ vpxor $Xlo,$Zlo,$Zlo
+ vpclmulqdq \$0x00,$Hkey,$Ij,$Xlo
+ vpxor $Ij,$T1,$T1
+ vmovdqu -0x50($inp),$Ii
+ vpxor $Xhi,$Zhi,$Zhi
+ vpclmulqdq \$0x11,$Hkey,$Ij,$Xhi
+ vmovdqu 0x60-0x40($Htbl),$Hkey # $Hkey^5
+ vpshufb $bswap,$Ii,$Ij
+ vpxor $Xmi,$Zmi,$Zmi
+ vpclmulqdq \$0x00,$HK,$T1,$Xmi
+ vmovdqu 0x80-0x40($Htbl),$HK
+ sub \$0x10,$len
+ jz .Ltail_avx
+
+ vpunpckhqdq $Ij,$Ij,$T1
+ vpxor $Xlo,$Zlo,$Zlo
+ vpclmulqdq \$0x00,$Hkey,$Ij,$Xlo
+ vpxor $Ij,$T1,$T1
+ vmovdqu -0x60($inp),$Ii
+ vpxor $Xhi,$Zhi,$Zhi
+ vpclmulqdq \$0x11,$Hkey,$Ij,$Xhi
+ vmovdqu 0x70-0x40($Htbl),$Hkey # $Hkey^6
+ vpshufb $bswap,$Ii,$Ij
+ vpxor $Xmi,$Zmi,$Zmi
+ vpclmulqdq \$0x00,$HK,$T1,$Xmi
+ vpsrldq \$8,$HK,$HK
+ sub \$0x10,$len
+ jz .Ltail_avx
+
+ vpunpckhqdq $Ij,$Ij,$T1
+ vpxor $Xlo,$Zlo,$Zlo
+ vpclmulqdq \$0x00,$Hkey,$Ij,$Xlo
+ vpxor $Ij,$T1,$T1
+ vmovdqu -0x70($inp),$Ii
+ vpxor $Xhi,$Zhi,$Zhi
+ vpclmulqdq \$0x11,$Hkey,$Ij,$Xhi
+ vmovdqu 0x90-0x40($Htbl),$Hkey # $Hkey^7
+ vpshufb $bswap,$Ii,$Ij
+ vpxor $Xmi,$Zmi,$Zmi
+ vpclmulqdq \$0x00,$HK,$T1,$Xmi
+ vmovq 0xb8-0x40($Htbl),$HK
+ sub \$0x10,$len
+ jmp .Ltail_avx
+
+.align 32
+.Ltail_avx:
+ vpxor $Xi,$Ij,$Ij # accumulate $Xi
+.Ltail_no_xor_avx:
+ vpunpckhqdq $Ij,$Ij,$T1
+ vpxor $Xlo,$Zlo,$Zlo
+ vpclmulqdq \$0x00,$Hkey,$Ij,$Xlo
+ vpxor $Ij,$T1,$T1
+ vpxor $Xhi,$Zhi,$Zhi
+ vpclmulqdq \$0x11,$Hkey,$Ij,$Xhi
+ vpxor $Xmi,$Zmi,$Zmi
+ vpclmulqdq \$0x00,$HK,$T1,$Xmi
+
+ vmovdqu (%r10),$Tred
+
+ vpxor $Xlo,$Zlo,$Xi
+ vpxor $Xhi,$Zhi,$Xo
+ vpxor $Xmi,$Zmi,$Zmi
+
+ vpxor $Xi, $Zmi,$Zmi # aggregated Karatsuba post-processing
+ vpxor $Xo, $Zmi,$Zmi
+ vpslldq \$8, $Zmi,$T2
+ vpsrldq \$8, $Zmi,$Zmi
+ vpxor $T2, $Xi, $Xi
+ vpxor $Zmi,$Xo, $Xo
+
+ vpclmulqdq \$0x10,$Tred,$Xi,$T2 # 1st phase
+ vpalignr \$8,$Xi,$Xi,$Xi
+ vpxor $T2,$Xi,$Xi
+
+ vpclmulqdq \$0x10,$Tred,$Xi,$T2 # 2nd phase
+ vpalignr \$8,$Xi,$Xi,$Xi
+ vpxor $Xo,$Xi,$Xi
+ vpxor $T2,$Xi,$Xi
+
+ cmp \$0,$len
+ jne .Lshort_avx
+
+ vpshufb $bswap,$Xi,$Xi
+ vmovdqu $Xi,($Xip)
+ vzeroupper
+___
+$code.=<<___ if ($win64);
+ movaps (%rsp),%xmm6
+ movaps 0x10(%rsp),%xmm7
+ movaps 0x20(%rsp),%xmm8
+ movaps 0x30(%rsp),%xmm9
+ movaps 0x40(%rsp),%xmm10
+ movaps 0x50(%rsp),%xmm11
+ movaps 0x60(%rsp),%xmm12
+ movaps 0x70(%rsp),%xmm13
+ movaps 0x80(%rsp),%xmm14
+ movaps 0x90(%rsp),%xmm15
+ lea 0xa8(%rsp),%rsp
+.LSEH_end_gcm_ghash_avx:
+___
+$code.=<<___;
+ ret
+.size gcm_ghash_avx,.-gcm_ghash_avx
+___
+} else {
+$code.=<<___;
+ jmp .L_ghash_clmul
+.size gcm_ghash_avx,.-gcm_ghash_avx
+___
+}
+
+$code.=<<___;
.align 64
.Lbswap_mask:
.byte 15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0
.L0x1c2_polynomial:
.byte 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0xc2
+.L7_mask:
+ .long 7,0,7,0
+.L7_mask_poly:
+ .long 7,0,`0xE1<<1`,0
.align 64
.type .Lrem_4bit,\@object
.Lrem_4bit:
@@ -774,10 +1698,24 @@ se_handler:
.rva .LSEH_end_gcm_ghash_4bit
.rva .LSEH_info_gcm_ghash_4bit
+ .rva .LSEH_begin_gcm_init_clmul
+ .rva .LSEH_end_gcm_init_clmul
+ .rva .LSEH_info_gcm_init_clmul
+
.rva .LSEH_begin_gcm_ghash_clmul
.rva .LSEH_end_gcm_ghash_clmul
.rva .LSEH_info_gcm_ghash_clmul
+___
+$code.=<<___ if ($avx);
+ .rva .LSEH_begin_gcm_init_avx
+ .rva .LSEH_end_gcm_init_avx
+ .rva .LSEH_info_gcm_init_clmul
+ .rva .LSEH_begin_gcm_ghash_avx
+ .rva .LSEH_end_gcm_ghash_avx
+ .rva .LSEH_info_gcm_ghash_clmul
+___
+$code.=<<___;
.section .xdata
.align 8
.LSEH_info_gcm_gmult_4bit:
@@ -788,14 +1726,23 @@ se_handler:
.byte 9,0,0,0
.rva se_handler
.rva .Lghash_prologue,.Lghash_epilogue # HandlerData
+.LSEH_info_gcm_init_clmul:
+ .byte 0x01,0x08,0x03,0x00
+ .byte 0x08,0x68,0x00,0x00 #movaps 0x00(rsp),xmm6
+ .byte 0x04,0x22,0x00,0x00 #sub rsp,0x18
.LSEH_info_gcm_ghash_clmul:
- .byte 0x01,0x1f,0x0b,0x00
- .byte 0x1f,0xa8,0x04,0x00 #movaps 0x40(rsp),xmm10
- .byte 0x19,0x98,0x03,0x00 #movaps 0x30(rsp),xmm9
- .byte 0x13,0x88,0x02,0x00 #movaps 0x20(rsp),xmm8
- .byte 0x0d,0x78,0x01,0x00 #movaps 0x10(rsp),xmm7
- .byte 0x08,0x68,0x00,0x00 #movaps (rsp),xmm6
- .byte 0x04,0xa2,0x00,0x00 #sub rsp,0x58
+ .byte 0x01,0x33,0x16,0x00
+ .byte 0x33,0xf8,0x09,0x00 #movaps 0x90(rsp),xmm15
+ .byte 0x2e,0xe8,0x08,0x00 #movaps 0x80(rsp),xmm14
+ .byte 0x29,0xd8,0x07,0x00 #movaps 0x70(rsp),xmm13
+ .byte 0x24,0xc8,0x06,0x00 #movaps 0x60(rsp),xmm12
+ .byte 0x1f,0xb8,0x05,0x00 #movaps 0x50(rsp),xmm11
+ .byte 0x1a,0xa8,0x04,0x00 #movaps 0x40(rsp),xmm10
+ .byte 0x15,0x98,0x03,0x00 #movaps 0x30(rsp),xmm9
+ .byte 0x10,0x88,0x02,0x00 #movaps 0x20(rsp),xmm8
+ .byte 0x0c,0x78,0x01,0x00 #movaps 0x10(rsp),xmm7
+ .byte 0x08,0x68,0x00,0x00 #movaps 0x00(rsp),xmm6
+ .byte 0x04,0x01,0x15,0x00 #sub rsp,0xa8
___
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-09 21:22:12 +0000