Allow IPv6 address entry in tools>ping - Loosens valid character check

[tomato/davidwu.git] / release / src / router / openssl / crypto / sha / asm / sha1-586.pl

#!/usr/bin/env perl

# ====================================================================
# [Re]written by Andy Polyakov <appro@fy.chalmers.se> 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/.
# ====================================================================

# "[Re]written" was achieved in two major overhauls. In 2004 BODY_*
# functions were re-implemented to address P4 performance issue [see
# commentary below], and in 2006 the rest was rewritten in order to
# gain freedom to liberate licensing terms.

# January, September 2004.
#
# It was noted that Intel IA-32 C compiler generates code which
# performs ~30% *faster* on P4 CPU than original *hand-coded*
# SHA1 assembler implementation. To address this problem (and
# prove that humans are still better than machines:-), the
# original code was overhauled, which resulted in following
# performance changes:
#
#               compared with original  compared with Intel cc
#               assembler impl.         generated code
# Pentium       -16%                    +48%
# PIII/AMD      +8%                     +16%
# P4            +85%(!)                 +45%
#
# As you can see Pentium came out as looser:-( Yet I reckoned that
# improvement on P4 outweights the loss and incorporate this
# re-tuned code to 0.9.7 and later.
# ----------------------------------------------------------------
#                                       <appro@fy.chalmers.se>

# August 2009.
#
# George Spelvin has tipped that F_40_59(b,c,d) can be rewritten as
# '(c&d) + (b&(c^d))', which allows to accumulate partial results
# and lighten "pressure" on scratch registers. This resulted in
# >12% performance improvement on contemporary AMD cores (with no
# degradation on other CPUs:-). Also, the code was revised to maximize
# "distance" between instructions producing input to 'lea' instruction
# and the 'lea' instruction itself, which is essential for Intel Atom
# core and resulted in ~15% improvement.

# October 2010.
#
# Add SSSE3, Supplemental[!] SSE3, implementation. The idea behind it
# is to offload message schedule denoted by Wt in NIST specification,
# or Xupdate in OpenSSL source, to SIMD unit. The idea is not novel,
# and in SSE2 context was first explored by Dean Gaudet in 2004, see
# http://arctic.org/~dean/crypto/sha1.html. Since then several things
# have changed that made it interesting again:
#
# a) XMM units became faster and wider;
# b) instruction set became more versatile;
# c) an important observation was made by Max Locktykhin, which made
#    it possible to reduce amount of instructions required to perform
#    the operation in question, for further details see
#    http://software.intel.com/en-us/articles/improving-the-performance-of-the-secure-hash-algorithm-1/.

# April 2011.
#
# Add AVX code path, probably most controversial... The thing is that
# switch to AVX alone improves performance by as little as 4% in
# comparison to SSSE3 code path. But below result doesn't look like
# 4% improvement... Trouble is that Sandy Bridge decodes 'ro[rl]' as
# pair of µ-ops, and it's the additional µ-ops, two per round, that
# make it run slower than Core2 and Westmere. But 'sh[rl]d' is decoded
# as single µ-op by Sandy Bridge and it's replacing 'ro[rl]' with
# equivalent 'sh[rl]d' that is responsible for the impressive 5.1
# cycles per processed byte. But 'sh[rl]d' is not something that used
# to be fast, nor does it appear to be fast in upcoming Bulldozer
# [according to its optimization manual]. Which is why AVX code path
# is guarded by *both* AVX and synthetic bit denoting Intel CPUs.
# One can argue that it's unfair to AMD, but without 'sh[rl]d' it
# makes no sense to keep the AVX code path. If somebody feels that
# strongly, it's probably more appropriate to discuss possibility of
# using vector rotate XOP on AMD...

######################################################################
# Current performance is summarized in following table. Numbers are
# CPU clock cycles spent to process single byte (less is better).
#
#               x86             SSSE3           AVX
# Pentium       15.7            -
# PIII          11.5            -
# P4            10.6            -
# AMD K8        7.1             -
# Core2         7.3             6.1/+20%        -
# Atom          12.5            9.5(*)/+32%     -
# Westmere      7.3             5.6/+30%        -
# Sandy Bridge  8.8             6.2/+40%        5.1(**)/+70%
#
# (*)   Loop is 1056 instructions long and expected result is ~8.25.
#       It remains mystery [to me] why ILP is limited to 1.7.
#
# (**)  As per above comment, the result is for AVX *plus* sh[rl]d.

$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
push(@INC,"${dir}","${dir}../../perlasm");
require "x86asm.pl";

&asm_init($ARGV[0],"sha1-586.pl",$ARGV[$#ARGV] eq "386");

$xmm=$ymm=0;
for (@ARGV) { $xmm=1 if (/-DOPENSSL_IA32_SSE2/); }

$ymm=1 if ($xmm &&
                `$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
                        =~ /GNU assembler version ([2-9]\.[0-9]+)/ &&
                $1>=2.19);      # first version supporting AVX

$ymm=1 if ($xmm && !$ymm && $ARGV[0] eq "win32n" && 
                `nasm -v 2>&1` =~ /NASM version ([2-9]\.[0-9]+)/ &&
                $1>=2.03);      # first version supporting AVX

&external_label("OPENSSL_ia32cap_P") if ($xmm);


$A="eax";
$B="ebx";
$C="ecx";
$D="edx";
$E="edi";
$T="esi";
$tmp1="ebp";

@V=($A,$B,$C,$D,$E,$T);

$alt=0; # 1 denotes alternative IALU implementation, which performs
        # 8% *worse* on P4, same on Westmere and Atom, 2% better on
        # Sandy Bridge...

sub BODY_00_15
        {
        local($n,$a,$b,$c,$d,$e,$f)=@_;

        &comment("00_15 $n");

        &mov($f,$c);                    # f to hold F_00_19(b,c,d)
         if ($n==0)  { &mov($tmp1,$a); }
         else        { &mov($a,$tmp1); }
        &rotl($tmp1,5);                 # tmp1=ROTATE(a,5)
         &xor($f,$d);
        &add($tmp1,$e);                 # tmp1+=e;
         &mov($e,&swtmp($n%16));        # e becomes volatile and is loaded
                                        # with xi, also note that e becomes
                                        # f in next round...
        &and($f,$b);
        &rotr($b,2);                    # b=ROTATE(b,30)
         &xor($f,$d);                   # f holds F_00_19(b,c,d)
        &lea($tmp1,&DWP(0x5a827999,$tmp1,$e));  # tmp1+=K_00_19+xi

        if ($n==15) { &mov($e,&swtmp(($n+1)%16));# pre-fetch f for next round
                      &add($f,$tmp1); } # f+=tmp1
        else        { &add($tmp1,$f); } # f becomes a in next round
        &mov($tmp1,$a)                  if ($alt && $n==15);
        }

sub BODY_16_19
        {
        local($n,$a,$b,$c,$d,$e,$f)=@_;

        &comment("16_19 $n");

if ($alt) {
        &xor($c,$d);
         &xor($f,&swtmp(($n+2)%16));    # f to hold Xupdate(xi,xa,xb,xc,xd)
        &and($tmp1,$c);                 # tmp1 to hold F_00_19(b,c,d), b&=c^d
         &xor($f,&swtmp(($n+8)%16));
        &xor($tmp1,$d);                 # tmp1=F_00_19(b,c,d)
         &xor($f,&swtmp(($n+13)%16));   # f holds xa^xb^xc^xd
        &rotl($f,1);                    # f=ROTATE(f,1)
         &add($e,$tmp1);                # e+=F_00_19(b,c,d)
        &xor($c,$d);                    # restore $c
         &mov($tmp1,$a);                # b in next round
        &rotr($b,$n==16?2:7);           # b=ROTATE(b,30)
         &mov(&swtmp($n%16),$f);        # xi=f
        &rotl($a,5);                    # ROTATE(a,5)
         &lea($f,&DWP(0x5a827999,$f,$e));# f+=F_00_19(b,c,d)+e
        &mov($e,&swtmp(($n+1)%16));     # pre-fetch f for next round
         &add($f,$a);                   # f+=ROTATE(a,5)
} else {
        &mov($tmp1,$c);                 # tmp1 to hold F_00_19(b,c,d)
         &xor($f,&swtmp(($n+2)%16));    # f to hold Xupdate(xi,xa,xb,xc,xd)
        &xor($tmp1,$d);
         &xor($f,&swtmp(($n+8)%16));
        &and($tmp1,$b);
         &xor($f,&swtmp(($n+13)%16));   # f holds xa^xb^xc^xd
        &rotl($f,1);                    # f=ROTATE(f,1)
         &xor($tmp1,$d);                # tmp1=F_00_19(b,c,d)
        &add($e,$tmp1);                 # e+=F_00_19(b,c,d)
         &mov($tmp1,$a);
        &rotr($b,2);                    # b=ROTATE(b,30)
         &mov(&swtmp($n%16),$f);        # xi=f
        &rotl($tmp1,5);                 # ROTATE(a,5)
         &lea($f,&DWP(0x5a827999,$f,$e));# f+=F_00_19(b,c,d)+e
        &mov($e,&swtmp(($n+1)%16));     # pre-fetch f for next round
         &add($f,$tmp1);                # f+=ROTATE(a,5)
}
        }

sub BODY_20_39
        {
        local($n,$a,$b,$c,$d,$e,$f)=@_;
        local $K=($n<40)?0x6ed9eba1:0xca62c1d6;

        &comment("20_39 $n");

if ($alt) {
        &xor($tmp1,$c);                 # tmp1 to hold F_20_39(b,c,d), b^=c
         &xor($f,&swtmp(($n+2)%16));    # f to hold Xupdate(xi,xa,xb,xc,xd)
        &xor($tmp1,$d);                 # tmp1 holds F_20_39(b,c,d)
         &xor($f,&swtmp(($n+8)%16));
        &add($e,$tmp1);                 # e+=F_20_39(b,c,d)
         &xor($f,&swtmp(($n+13)%16));   # f holds xa^xb^xc^xd
        &rotl($f,1);                    # f=ROTATE(f,1)
         &mov($tmp1,$a);                # b in next round
        &rotr($b,7);                    # b=ROTATE(b,30)
         &mov(&swtmp($n%16),$f)         if($n<77);# xi=f
        &rotl($a,5);                    # ROTATE(a,5)
         &xor($b,$c)                    if($n==39);# warm up for BODY_40_59
        &and($tmp1,$b)                  if($n==39);
         &lea($f,&DWP($K,$f,$e));       # f+=e+K_XX_YY
        &mov($e,&swtmp(($n+1)%16))      if($n<79);# pre-fetch f for next round
         &add($f,$a);                   # f+=ROTATE(a,5)
        &rotr($a,5)                     if ($n==79);
} else {
        &mov($tmp1,$b);                 # tmp1 to hold F_20_39(b,c,d)
         &xor($f,&swtmp(($n+2)%16));    # f to hold Xupdate(xi,xa,xb,xc,xd)
        &xor($tmp1,$c);
         &xor($f,&swtmp(($n+8)%16));
        &xor($tmp1,$d);                 # tmp1 holds F_20_39(b,c,d)
         &xor($f,&swtmp(($n+13)%16));   # f holds xa^xb^xc^xd
        &rotl($f,1);                    # f=ROTATE(f,1)
         &add($e,$tmp1);                # e+=F_20_39(b,c,d)
        &rotr($b,2);                    # b=ROTATE(b,30)
         &mov($tmp1,$a);
        &rotl($tmp1,5);                 # ROTATE(a,5)
         &mov(&swtmp($n%16),$f) if($n<77);# xi=f
        &lea($f,&DWP($K,$f,$e));        # f+=e+K_XX_YY
         &mov($e,&swtmp(($n+1)%16)) if($n<79);# pre-fetch f for next round
        &add($f,$tmp1);                 # f+=ROTATE(a,5)
}
        }

sub BODY_40_59
        {
        local($n,$a,$b,$c,$d,$e,$f)=@_;

        &comment("40_59 $n");

if ($alt) {
        &add($e,$tmp1);                 # e+=b&(c^d)
         &xor($f,&swtmp(($n+2)%16));    # f to hold Xupdate(xi,xa,xb,xc,xd)
        &mov($tmp1,$d);
         &xor($f,&swtmp(($n+8)%16));
        &xor($c,$d);                    # restore $c
         &xor($f,&swtmp(($n+13)%16));   # f holds xa^xb^xc^xd
        &rotl($f,1);                    # f=ROTATE(f,1)
         &and($tmp1,$c);
        &rotr($b,7);                    # b=ROTATE(b,30)
         &add($e,$tmp1);                # e+=c&d
        &mov($tmp1,$a);                 # b in next round
         &mov(&swtmp($n%16),$f);        # xi=f
        &rotl($a,5);                    # ROTATE(a,5)
         &xor($b,$c)                    if ($n<59);
        &and($tmp1,$b)                  if ($n<59);# tmp1 to hold F_40_59(b,c,d)
         &lea($f,&DWP(0x8f1bbcdc,$f,$e));# f+=K_40_59+e+(b&(c^d))
        &mov($e,&swtmp(($n+1)%16));     # pre-fetch f for next round
         &add($f,$a);                   # f+=ROTATE(a,5)
} else {
        &mov($tmp1,$c);                 # tmp1 to hold F_40_59(b,c,d)
         &xor($f,&swtmp(($n+2)%16));    # f to hold Xupdate(xi,xa,xb,xc,xd)
        &xor($tmp1,$d);
         &xor($f,&swtmp(($n+8)%16));
        &and($tmp1,$b);
         &xor($f,&swtmp(($n+13)%16));   # f holds xa^xb^xc^xd
        &rotl($f,1);                    # f=ROTATE(f,1)
         &add($tmp1,$e);                # b&(c^d)+=e
        &rotr($b,2);                    # b=ROTATE(b,30)
         &mov($e,$a);                   # e becomes volatile
        &rotl($e,5);                    # ROTATE(a,5)
         &mov(&swtmp($n%16),$f);        # xi=f
        &lea($f,&DWP(0x8f1bbcdc,$f,$tmp1));# f+=K_40_59+e+(b&(c^d))
         &mov($tmp1,$c);
        &add($f,$e);                    # f+=ROTATE(a,5)
         &and($tmp1,$d);
        &mov($e,&swtmp(($n+1)%16));     # pre-fetch f for next round
         &add($f,$tmp1);                # f+=c&d
}
        }

&function_begin("sha1_block_data_order");
if ($xmm) {
  &static_label("ssse3_shortcut");
  &static_label("avx_shortcut")         if ($ymm);
  &static_label("K_XX_XX");

        &call   (&label("pic_point"));  # make it PIC!
  &set_label("pic_point");
        &blindpop($tmp1);
        &picmeup($T,"OPENSSL_ia32cap_P",$tmp1,&label("pic_point"));
        &lea    ($tmp1,&DWP(&label("K_XX_XX")."-".&label("pic_point"),$tmp1));

        &mov    ($A,&DWP(0,$T));
        &mov    ($D,&DWP(4,$T));
        &test   ($D,1<<9);              # check SSSE3 bit
        &jz     (&label("x86"));
        &test   ($A,1<<24);             # check FXSR bit
        &jz     (&label("x86"));
        if ($ymm) {
                &and    ($D,1<<28);             # mask AVX bit
                &and    ($A,1<<30);             # mask "Intel CPU" bit
                &or     ($A,$D);
                &cmp    ($A,1<<28|1<<30);
                &je     (&label("avx_shortcut"));
        }
        &jmp    (&label("ssse3_shortcut"));
  &set_label("x86",16);
}
        &mov($tmp1,&wparam(0)); # SHA_CTX *c
        &mov($T,&wparam(1));    # const void *input
        &mov($A,&wparam(2));    # size_t num
        &stack_push(16+3);      # allocate X[16]
        &shl($A,6);
        &add($A,$T);
        &mov(&wparam(2),$A);    # pointer beyond the end of input
        &mov($E,&DWP(16,$tmp1));# pre-load E
        &jmp(&label("loop"));

&set_label("loop",16);

        # copy input chunk to X, but reversing byte order!
        for ($i=0; $i<16; $i+=4)
                {
                &mov($A,&DWP(4*($i+0),$T));
                &mov($B,&DWP(4*($i+1),$T));
                &mov($C,&DWP(4*($i+2),$T));
                &mov($D,&DWP(4*($i+3),$T));
                &bswap($A);
                &bswap($B);
                &bswap($C);
                &bswap($D);
                &mov(&swtmp($i+0),$A);
                &mov(&swtmp($i+1),$B);
                &mov(&swtmp($i+2),$C);
                &mov(&swtmp($i+3),$D);
                }
        &mov(&wparam(1),$T);    # redundant in 1st spin

        &mov($A,&DWP(0,$tmp1)); # load SHA_CTX
        &mov($B,&DWP(4,$tmp1));
        &mov($C,&DWP(8,$tmp1));
        &mov($D,&DWP(12,$tmp1));
        # E is pre-loaded

        for($i=0;$i<16;$i++)    { &BODY_00_15($i,@V); unshift(@V,pop(@V)); }
        for(;$i<20;$i++)        { &BODY_16_19($i,@V); unshift(@V,pop(@V)); }
        for(;$i<40;$i++)        { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
        for(;$i<60;$i++)        { &BODY_40_59($i,@V); unshift(@V,pop(@V)); }
        for(;$i<80;$i++)        { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }

        (($V[5] eq $D) and ($V[0] eq $E)) or die;       # double-check

        &mov($tmp1,&wparam(0)); # re-load SHA_CTX*
        &mov($D,&wparam(1));    # D is last "T" and is discarded

        &add($E,&DWP(0,$tmp1)); # E is last "A"...
        &add($T,&DWP(4,$tmp1));
        &add($A,&DWP(8,$tmp1));
        &add($B,&DWP(12,$tmp1));
        &add($C,&DWP(16,$tmp1));

        &mov(&DWP(0,$tmp1),$E); # update SHA_CTX
         &add($D,64);           # advance input pointer
        &mov(&DWP(4,$tmp1),$T);
         &cmp($D,&wparam(2));   # have we reached the end yet?
        &mov(&DWP(8,$tmp1),$A);
         &mov($E,$C);           # C is last "E" which needs to be "pre-loaded"
        &mov(&DWP(12,$tmp1),$B);
         &mov($T,$D);           # input pointer
        &mov(&DWP(16,$tmp1),$C);
        &jb(&label("loop"));

        &stack_pop(16+3);
&function_end("sha1_block_data_order");

if ($xmm) {
######################################################################
# The SSSE3 implementation.
#
# %xmm[0-7] are used as ring @X[] buffer containing quadruples of last
# 32 elements of the message schedule or Xupdate outputs. First 4
# quadruples are simply byte-swapped input, next 4 are calculated
# according to method originally suggested by Dean Gaudet (modulo
# being implemented in SSSE3). Once 8 quadruples or 32 elements are
# collected, it switches to routine proposed by Max Locktyukhin.
#
# Calculations inevitably require temporary reqisters, and there are
# no %xmm registers left to spare. For this reason part of the ring
# buffer, X[2..4] to be specific, is offloaded to 3 quadriples ring
# buffer on the stack. Keep in mind that X[2] is alias X[-6], X[3] -
# X[-5], and X[4] - X[-4]...
#
# Another notable optimization is aggressive stack frame compression
# aiming to minimize amount of 9-byte instructions...
#
# Yet another notable optimization is "jumping" $B variable. It means
# that there is no register permanently allocated for $B value. This
# allowed to eliminate one instruction from body_20_39...
#
my $Xi=4;                       # 4xSIMD Xupdate round, start pre-seeded
my @X=map("xmm$_",(4..7,0..3)); # pre-seeded for $Xi=4
my @V=($A,$B,$C,$D,$E);
my $j=0;                        # hash round
my @T=($T,$tmp1);
my $inp;

my $_rol=sub { &rol(@_) };
my $_ror=sub { &ror(@_) };

&function_begin("_sha1_block_data_order_ssse3");
        &call   (&label("pic_point"));  # make it PIC!
        &set_label("pic_point");
        &blindpop($tmp1);
        &lea    ($tmp1,&DWP(&label("K_XX_XX")."-".&label("pic_point"),$tmp1));
&set_label("ssse3_shortcut");

        &movdqa (@X[3],&QWP(0,$tmp1));          # K_00_19
        &movdqa (@X[4],&QWP(16,$tmp1));         # K_20_39
        &movdqa (@X[5],&QWP(32,$tmp1));         # K_40_59
        &movdqa (@X[6],&QWP(48,$tmp1));         # K_60_79
        &movdqa (@X[2],&QWP(64,$tmp1));         # pbswap mask

        &mov    ($E,&wparam(0));                # load argument block
        &mov    ($inp=@T[1],&wparam(1));
        &mov    ($D,&wparam(2));
        &mov    (@T[0],"esp");

        # stack frame layout
        #
        # +0    X[0]+K  X[1]+K  X[2]+K  X[3]+K  # XMM->IALU xfer area
        #       X[4]+K  X[5]+K  X[6]+K  X[7]+K
        #       X[8]+K  X[9]+K  X[10]+K X[11]+K
        #       X[12]+K X[13]+K X[14]+K X[15]+K
        #
        # +64   X[0]    X[1]    X[2]    X[3]    # XMM->XMM backtrace area
        #       X[4]    X[5]    X[6]    X[7]
        #       X[8]    X[9]    X[10]   X[11]   # even borrowed for K_00_19
        #
        # +112  K_20_39 K_20_39 K_20_39 K_20_39 # constants
        #       K_40_59 K_40_59 K_40_59 K_40_59
        #       K_60_79 K_60_79 K_60_79 K_60_79
        #       K_00_19 K_00_19 K_00_19 K_00_19
        #       pbswap mask
        #
        # +192  ctx                             # argument block
        # +196  inp
        # +200  end
        # +204  esp
        &sub    ("esp",208);
        &and    ("esp",-64);

        &movdqa (&QWP(112+0,"esp"),@X[4]);      # copy constants
        &movdqa (&QWP(112+16,"esp"),@X[5]);
        &movdqa (&QWP(112+32,"esp"),@X[6]);
        &shl    ($D,6);                         # len*64
        &movdqa (&QWP(112+48,"esp"),@X[3]);
        &add    ($D,$inp);                      # end of input
        &movdqa (&QWP(112+64,"esp"),@X[2]);
        &add    ($inp,64);
        &mov    (&DWP(192+0,"esp"),$E);         # save argument block
        &mov    (&DWP(192+4,"esp"),$inp);
        &mov    (&DWP(192+8,"esp"),$D);
        &mov    (&DWP(192+12,"esp"),@T[0]);     # save original %esp

        &mov    ($A,&DWP(0,$E));                # load context
        &mov    ($B,&DWP(4,$E));
        &mov    ($C,&DWP(8,$E));
        &mov    ($D,&DWP(12,$E));
        &mov    ($E,&DWP(16,$E));
        &mov    (@T[0],$B);                     # magic seed

        &movdqu (@X[-4&7],&QWP(-64,$inp));      # load input to %xmm[0-3]
        &movdqu (@X[-3&7],&QWP(-48,$inp));
        &movdqu (@X[-2&7],&QWP(-32,$inp));
        &movdqu (@X[-1&7],&QWP(-16,$inp));
        &pshufb (@X[-4&7],@X[2]);               # byte swap
        &pshufb (@X[-3&7],@X[2]);
        &pshufb (@X[-2&7],@X[2]);
        &movdqa (&QWP(112-16,"esp"),@X[3]);     # borrow last backtrace slot
        &pshufb (@X[-1&7],@X[2]);
        &paddd  (@X[-4&7],@X[3]);               # add K_00_19
        &paddd  (@X[-3&7],@X[3]);
        &paddd  (@X[-2&7],@X[3]);
        &movdqa (&QWP(0,"esp"),@X[-4&7]);       # X[]+K xfer to IALU
        &psubd  (@X[-4&7],@X[3]);               # restore X[]
        &movdqa (&QWP(0+16,"esp"),@X[-3&7]);
        &psubd  (@X[-3&7],@X[3]);
        &movdqa (&QWP(0+32,"esp"),@X[-2&7]);
        &psubd  (@X[-2&7],@X[3]);
        &movdqa (@X[0],@X[-3&7]);
        &jmp    (&label("loop"));

######################################################################
# SSE instruction sequence is first broken to groups of indepentent
# instructions, independent in respect to their inputs and shifter
# (not all architectures have more than one). Then IALU instructions
# are "knitted in" between the SSE groups. Distance is maintained for
# SSE latency of 2 in hope that it fits better upcoming AMD Bulldozer
# [which allegedly also implements SSSE3]...
#
# Temporary registers usage. X[2] is volatile at the entry and at the
# end is restored from backtrace ring buffer. X[3] is expected to
# contain current K_XX_XX constant and is used to caclulate X[-1]+K
# from previous round, it becomes volatile the moment the value is
# saved to stack for transfer to IALU. X[4] becomes volatile whenever
# X[-4] is accumulated and offloaded to backtrace ring buffer, at the
# end it is loaded with next K_XX_XX [which becomes X[3] in next
# round]...
#
sub Xupdate_ssse3_16_31()               # recall that $Xi starts wtih 4
{ use integer;
  my $body = shift;
  my @insns = (&$body,&$body,&$body,&$body);    # 40 instructions
  my ($a,$b,$c,$d,$e);

         eval(shift(@insns));
         eval(shift(@insns));
        &palignr(@X[0],@X[-4&7],8);     # compose "X[-14]" in "X[0]"
        &movdqa (@X[2],@X[-1&7]);
         eval(shift(@insns));
         eval(shift(@insns));

          &paddd        (@X[3],@X[-1&7]);
          &movdqa       (&QWP(64+16*(($Xi-4)%3),"esp"),@X[-4&7]);# save X[] to backtrace buffer
         eval(shift(@insns));
         eval(shift(@insns));
        &psrldq (@X[2],4);              # "X[-3]", 3 dwords
         eval(shift(@insns));
         eval(shift(@insns));
        &pxor   (@X[0],@X[-4&7]);       # "X[0]"^="X[-16]"
         eval(shift(@insns));
         eval(shift(@insns));

        &pxor   (@X[2],@X[-2&7]);       # "X[-3]"^"X[-8]"
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));

        &pxor   (@X[0],@X[2]);          # "X[0]"^="X[-3]"^"X[-8]"
         eval(shift(@insns));
         eval(shift(@insns));
          &movdqa       (&QWP(0+16*(($Xi-1)&3),"esp"),@X[3]);   # X[]+K xfer to IALU
         eval(shift(@insns));
         eval(shift(@insns));

        &movdqa (@X[4],@X[0]);
        &movdqa (@X[2],@X[0]);
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));

        &pslldq (@X[4],12);             # "X[0]"<<96, extract one dword
        &paddd  (@X[0],@X[0]);
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));

        &psrld  (@X[2],31);
         eval(shift(@insns));
         eval(shift(@insns));
        &movdqa (@X[3],@X[4]);
         eval(shift(@insns));
         eval(shift(@insns));

        &psrld  (@X[4],30);
        &por    (@X[0],@X[2]);          # "X[0]"<<<=1
         eval(shift(@insns));
         eval(shift(@insns));
          &movdqa       (@X[2],&QWP(64+16*(($Xi-6)%3),"esp")) if ($Xi>5);       # restore X[] from backtrace buffer
         eval(shift(@insns));
         eval(shift(@insns));

        &pslld  (@X[3],2);
        &pxor   (@X[0],@X[4]);
         eval(shift(@insns));
         eval(shift(@insns));
          &movdqa       (@X[4],&QWP(112-16+16*(($Xi)/5),"esp"));        # K_XX_XX
         eval(shift(@insns));
         eval(shift(@insns));

        &pxor   (@X[0],@X[3]);          # "X[0]"^=("X[0]"<<96)<<<2
          &movdqa       (@X[1],@X[-2&7])        if ($Xi<7);
         eval(shift(@insns));
         eval(shift(@insns));

         foreach (@insns) { eval; }     # remaining instructions [if any]

  $Xi++;        push(@X,shift(@X));     # "rotate" X[]
}

sub Xupdate_ssse3_32_79()
{ use integer;
  my $body = shift;
  my @insns = (&$body,&$body,&$body,&$body);    # 32 to 48 instructions
  my ($a,$b,$c,$d,$e);

        &movdqa (@X[2],@X[-1&7])        if ($Xi==8);
         eval(shift(@insns));           # body_20_39
        &pxor   (@X[0],@X[-4&7]);       # "X[0]"="X[-32]"^"X[-16]"
        &palignr(@X[2],@X[-2&7],8);     # compose "X[-6]"
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));           # rol

        &pxor   (@X[0],@X[-7&7]);       # "X[0]"^="X[-28]"
          &movdqa       (&QWP(64+16*(($Xi-4)%3),"esp"),@X[-4&7]);       # save X[] to backtrace buffer
         eval(shift(@insns));
         eval(shift(@insns));
         if ($Xi%5) {
          &movdqa       (@X[4],@X[3]);  # "perpetuate" K_XX_XX...
         } else {                       # ... or load next one
          &movdqa       (@X[4],&QWP(112-16+16*($Xi/5),"esp"));
         }
          &paddd        (@X[3],@X[-1&7]);
         eval(shift(@insns));           # ror
         eval(shift(@insns));

        &pxor   (@X[0],@X[2]);          # "X[0]"^="X[-6]"
         eval(shift(@insns));           # body_20_39
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));           # rol

        &movdqa (@X[2],@X[0]);
          &movdqa       (&QWP(0+16*(($Xi-1)&3),"esp"),@X[3]);   # X[]+K xfer to IALU
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));           # ror
         eval(shift(@insns));

        &pslld  (@X[0],2);
         eval(shift(@insns));           # body_20_39
         eval(shift(@insns));
        &psrld  (@X[2],30);
         eval(shift(@insns));
         eval(shift(@insns));           # rol
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));           # ror
         eval(shift(@insns));

        &por    (@X[0],@X[2]);          # "X[0]"<<<=2
         eval(shift(@insns));           # body_20_39
         eval(shift(@insns));
          &movdqa       (@X[2],&QWP(64+16*(($Xi-6)%3),"esp")) if($Xi<19);       # restore X[] from backtrace buffer
         eval(shift(@insns));
         eval(shift(@insns));           # rol
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));           # ror
          &movdqa       (@X[3],@X[0])   if ($Xi<19);
         eval(shift(@insns));

         foreach (@insns) { eval; }     # remaining instructions

  $Xi++;        push(@X,shift(@X));     # "rotate" X[]
}

sub Xuplast_ssse3_80()
{ use integer;
  my $body = shift;
  my @insns = (&$body,&$body,&$body,&$body);    # 32 instructions
  my ($a,$b,$c,$d,$e);

         eval(shift(@insns));
          &paddd        (@X[3],@X[-1&7]);
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));

          &movdqa       (&QWP(0+16*(($Xi-1)&3),"esp"),@X[3]);   # X[]+K xfer IALU

         foreach (@insns) { eval; }             # remaining instructions

        &mov    ($inp=@T[1],&DWP(192+4,"esp"));
        &cmp    ($inp,&DWP(192+8,"esp"));
        &je     (&label("done"));

        &movdqa (@X[3],&QWP(112+48,"esp"));     # K_00_19
        &movdqa (@X[2],&QWP(112+64,"esp"));     # pbswap mask
        &movdqu (@X[-4&7],&QWP(0,$inp));        # load input
        &movdqu (@X[-3&7],&QWP(16,$inp));
        &movdqu (@X[-2&7],&QWP(32,$inp));
        &movdqu (@X[-1&7],&QWP(48,$inp));
        &add    ($inp,64);
        &pshufb (@X[-4&7],@X[2]);               # byte swap
        &mov    (&DWP(192+4,"esp"),$inp);
        &movdqa (&QWP(112-16,"esp"),@X[3]);     # borrow last backtrace slot

  $Xi=0;
}

sub Xloop_ssse3()
{ use integer;
  my $body = shift;
  my @insns = (&$body,&$body,&$body,&$body);    # 32 instructions
  my ($a,$b,$c,$d,$e);

         eval(shift(@insns));
         eval(shift(@insns));
        &pshufb (@X[($Xi-3)&7],@X[2]);
         eval(shift(@insns));
         eval(shift(@insns));
        &paddd  (@X[($Xi-4)&7],@X[3]);
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));
        &movdqa (&QWP(0+16*$Xi,"esp"),@X[($Xi-4)&7]);   # X[]+K xfer to IALU
         eval(shift(@insns));
         eval(shift(@insns));
        &psubd  (@X[($Xi-4)&7],@X[3]);

        foreach (@insns) { eval; }
  $Xi++;
}

sub Xtail_ssse3()
{ use integer;
  my $body = shift;
  my @insns = (&$body,&$body,&$body,&$body);    # 32 instructions
  my ($a,$b,$c,$d,$e);

        foreach (@insns) { eval; }
}

sub body_00_19 () {
        (
        '($a,$b,$c,$d,$e)=@V;'.
        '&add   ($e,&DWP(4*($j&15),"esp"));',   # X[]+K xfer
        '&xor   ($c,$d);',
        '&mov   (@T[1],$a);',   # $b in next round
        '&$_rol ($a,5);',
        '&and   (@T[0],$c);',   # ($b&($c^$d))
        '&xor   ($c,$d);',      # restore $c
        '&xor   (@T[0],$d);',
        '&add   ($e,$a);',
        '&$_ror ($b,$j?7:2);',  # $b>>>2
        '&add   ($e,@T[0]);'    .'$j++; unshift(@V,pop(@V)); unshift(@T,pop(@T));'
        );
}

sub body_20_39 () {
        (
        '($a,$b,$c,$d,$e)=@V;'.
        '&add   ($e,&DWP(4*($j++&15),"esp"));', # X[]+K xfer
        '&xor   (@T[0],$d);',   # ($b^$d)
        '&mov   (@T[1],$a);',   # $b in next round
        '&$_rol ($a,5);',
        '&xor   (@T[0],$c);',   # ($b^$d^$c)
        '&add   ($e,$a);',
        '&$_ror ($b,7);',       # $b>>>2
        '&add   ($e,@T[0]);'    .'unshift(@V,pop(@V)); unshift(@T,pop(@T));'
        );
}

sub body_40_59 () {
        (
        '($a,$b,$c,$d,$e)=@V;'.
        '&mov   (@T[1],$c);',
        '&xor   ($c,$d);',
        '&add   ($e,&DWP(4*($j++&15),"esp"));', # X[]+K xfer
        '&and   (@T[1],$d);',
        '&and   (@T[0],$c);',   # ($b&($c^$d))
        '&$_ror ($b,7);',       # $b>>>2
        '&add   ($e,@T[1]);',
        '&mov   (@T[1],$a);',   # $b in next round
        '&$_rol ($a,5);',
        '&add   ($e,@T[0]);',
        '&xor   ($c,$d);',      # restore $c
        '&add   ($e,$a);'       .'unshift(@V,pop(@V)); unshift(@T,pop(@T));'
        );
}

&set_label("loop",16);
        &Xupdate_ssse3_16_31(\&body_00_19);
        &Xupdate_ssse3_16_31(\&body_00_19);
        &Xupdate_ssse3_16_31(\&body_00_19);
        &Xupdate_ssse3_16_31(\&body_00_19);
        &Xupdate_ssse3_32_79(\&body_00_19);
        &Xupdate_ssse3_32_79(\&body_20_39);
        &Xupdate_ssse3_32_79(\&body_20_39);
        &Xupdate_ssse3_32_79(\&body_20_39);
        &Xupdate_ssse3_32_79(\&body_20_39);
        &Xupdate_ssse3_32_79(\&body_20_39);
        &Xupdate_ssse3_32_79(\&body_40_59);
        &Xupdate_ssse3_32_79(\&body_40_59);
        &Xupdate_ssse3_32_79(\&body_40_59);
        &Xupdate_ssse3_32_79(\&body_40_59);
        &Xupdate_ssse3_32_79(\&body_40_59);
        &Xupdate_ssse3_32_79(\&body_20_39);
        &Xuplast_ssse3_80(\&body_20_39);        # can jump to "done"

                                $saved_j=$j; @saved_V=@V;

        &Xloop_ssse3(\&body_20_39);
        &Xloop_ssse3(\&body_20_39);
        &Xloop_ssse3(\&body_20_39);

        &mov    (@T[1],&DWP(192,"esp"));        # update context
        &add    ($A,&DWP(0,@T[1]));
        &add    (@T[0],&DWP(4,@T[1]));          # $b
        &add    ($C,&DWP(8,@T[1]));
        &mov    (&DWP(0,@T[1]),$A);
        &add    ($D,&DWP(12,@T[1]));
        &mov    (&DWP(4,@T[1]),@T[0]);
        &add    ($E,&DWP(16,@T[1]));
        &mov    (&DWP(8,@T[1]),$C);
        &mov    ($B,@T[0]);
        &mov    (&DWP(12,@T[1]),$D);
        &mov    (&DWP(16,@T[1]),$E);
        &movdqa (@X[0],@X[-3&7]);

        &jmp    (&label("loop"));

&set_label("done",16);          $j=$saved_j; @V=@saved_V;

        &Xtail_ssse3(\&body_20_39);
        &Xtail_ssse3(\&body_20_39);
        &Xtail_ssse3(\&body_20_39);

        &mov    (@T[1],&DWP(192,"esp"));        # update context
        &add    ($A,&DWP(0,@T[1]));
        &mov    ("esp",&DWP(192+12,"esp"));     # restore %esp
        &add    (@T[0],&DWP(4,@T[1]));          # $b
        &add    ($C,&DWP(8,@T[1]));
        &mov    (&DWP(0,@T[1]),$A);
        &add    ($D,&DWP(12,@T[1]));
        &mov    (&DWP(4,@T[1]),@T[0]);
        &add    ($E,&DWP(16,@T[1]));
        &mov    (&DWP(8,@T[1]),$C);
        &mov    (&DWP(12,@T[1]),$D);
        &mov    (&DWP(16,@T[1]),$E);

&function_end("_sha1_block_data_order_ssse3");

if ($ymm) {
my $Xi=4;                       # 4xSIMD Xupdate round, start pre-seeded
my @X=map("xmm$_",(4..7,0..3)); # pre-seeded for $Xi=4
my @V=($A,$B,$C,$D,$E);
my $j=0;                        # hash round
my @T=($T,$tmp1);
my $inp;

my $_rol=sub { &shld(@_[0],@_) };
my $_ror=sub { &shrd(@_[0],@_) };

&function_begin("_sha1_block_data_order_avx");
        &call   (&label("pic_point"));  # make it PIC!
        &set_label("pic_point");
        &blindpop($tmp1);
        &lea    ($tmp1,&DWP(&label("K_XX_XX")."-".&label("pic_point"),$tmp1));
&set_label("avx_shortcut");
        &vzeroall();

        &vmovdqa(@X[3],&QWP(0,$tmp1));          # K_00_19
        &vmovdqa(@X[4],&QWP(16,$tmp1));         # K_20_39
        &vmovdqa(@X[5],&QWP(32,$tmp1));         # K_40_59
        &vmovdqa(@X[6],&QWP(48,$tmp1));         # K_60_79
        &vmovdqa(@X[2],&QWP(64,$tmp1));         # pbswap mask

        &mov    ($E,&wparam(0));                # load argument block
        &mov    ($inp=@T[1],&wparam(1));
        &mov    ($D,&wparam(2));
        &mov    (@T[0],"esp");

        # stack frame layout
        #
        # +0    X[0]+K  X[1]+K  X[2]+K  X[3]+K  # XMM->IALU xfer area
        #       X[4]+K  X[5]+K  X[6]+K  X[7]+K
        #       X[8]+K  X[9]+K  X[10]+K X[11]+K
        #       X[12]+K X[13]+K X[14]+K X[15]+K
        #
        # +64   X[0]    X[1]    X[2]    X[3]    # XMM->XMM backtrace area
        #       X[4]    X[5]    X[6]    X[7]
        #       X[8]    X[9]    X[10]   X[11]   # even borrowed for K_00_19
        #
        # +112  K_20_39 K_20_39 K_20_39 K_20_39 # constants
        #       K_40_59 K_40_59 K_40_59 K_40_59
        #       K_60_79 K_60_79 K_60_79 K_60_79
        #       K_00_19 K_00_19 K_00_19 K_00_19
        #       pbswap mask
        #
        # +192  ctx                             # argument block
        # +196  inp
        # +200  end
        # +204  esp
        &sub    ("esp",208);
        &and    ("esp",-64);

        &vmovdqa(&QWP(112+0,"esp"),@X[4]);      # copy constants
        &vmovdqa(&QWP(112+16,"esp"),@X[5]);
        &vmovdqa(&QWP(112+32,"esp"),@X[6]);
        &shl    ($D,6);                         # len*64
        &vmovdqa(&QWP(112+48,"esp"),@X[3]);
        &add    ($D,$inp);                      # end of input
        &vmovdqa(&QWP(112+64,"esp"),@X[2]);
        &add    ($inp,64);
        &mov    (&DWP(192+0,"esp"),$E);         # save argument block
        &mov    (&DWP(192+4,"esp"),$inp);
        &mov    (&DWP(192+8,"esp"),$D);
        &mov    (&DWP(192+12,"esp"),@T[0]);     # save original %esp

        &mov    ($A,&DWP(0,$E));                # load context
        &mov    ($B,&DWP(4,$E));
        &mov    ($C,&DWP(8,$E));
        &mov    ($D,&DWP(12,$E));
        &mov    ($E,&DWP(16,$E));
        &mov    (@T[0],$B);                     # magic seed

        &vmovdqu(@X[-4&7],&QWP(-64,$inp));      # load input to %xmm[0-3]
        &vmovdqu(@X[-3&7],&QWP(-48,$inp));
        &vmovdqu(@X[-2&7],&QWP(-32,$inp));
        &vmovdqu(@X[-1&7],&QWP(-16,$inp));
        &vpshufb(@X[-4&7],@X[-4&7],@X[2]);      # byte swap
        &vpshufb(@X[-3&7],@X[-3&7],@X[2]);
        &vpshufb(@X[-2&7],@X[-2&7],@X[2]);
        &vmovdqa(&QWP(112-16,"esp"),@X[3]);     # borrow last backtrace slot
        &vpshufb(@X[-1&7],@X[-1&7],@X[2]);
        &vpaddd (@X[0],@X[-4&7],@X[3]);         # add K_00_19
        &vpaddd (@X[1],@X[-3&7],@X[3]);
        &vpaddd (@X[2],@X[-2&7],@X[3]);
        &vmovdqa(&QWP(0,"esp"),@X[0]);          # X[]+K xfer to IALU
        &vmovdqa(&QWP(0+16,"esp"),@X[1]);
        &vmovdqa(&QWP(0+32,"esp"),@X[2]);
        &jmp    (&label("loop"));

sub Xupdate_avx_16_31()         # recall that $Xi starts wtih 4
{ use integer;
  my $body = shift;
  my @insns = (&$body,&$body,&$body,&$body);    # 40 instructions
  my ($a,$b,$c,$d,$e);

         eval(shift(@insns));
         eval(shift(@insns));
        &vpalignr(@X[0],@X[-3&7],@X[-4&7],8);   # compose "X[-14]" in "X[0]"
         eval(shift(@insns));
         eval(shift(@insns));

          &vpaddd       (@X[3],@X[3],@X[-1&7]);
          &vmovdqa      (&QWP(64+16*(($Xi-4)%3),"esp"),@X[-4&7]);# save X[] to backtrace buffer
         eval(shift(@insns));
         eval(shift(@insns));
        &vpsrldq(@X[2],@X[-1&7],4);             # "X[-3]", 3 dwords
         eval(shift(@insns));
         eval(shift(@insns));
        &vpxor  (@X[0],@X[0],@X[-4&7]);         # "X[0]"^="X[-16]"
         eval(shift(@insns));
         eval(shift(@insns));

        &vpxor  (@X[2],@X[2],@X[-2&7]);         # "X[-3]"^"X[-8]"
         eval(shift(@insns));
         eval(shift(@insns));
          &vmovdqa      (&QWP(0+16*(($Xi-1)&3),"esp"),@X[3]);   # X[]+K xfer to IALU
         eval(shift(@insns));
         eval(shift(@insns));

        &vpxor  (@X[0],@X[0],@X[2]);            # "X[0]"^="X[-3]"^"X[-8]"
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));

        &vpsrld (@X[2],@X[0],31);
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));

        &vpslldq(@X[4],@X[0],12);               # "X[0]"<<96, extract one dword
        &vpaddd (@X[0],@X[0],@X[0]);
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));

        &vpsrld (@X[3],@X[4],30);
        &vpor   (@X[0],@X[0],@X[2]);            # "X[0]"<<<=1
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));

        &vpslld (@X[4],@X[4],2);
          &vmovdqa      (@X[2],&QWP(64+16*(($Xi-6)%3),"esp")) if ($Xi>5);       # restore X[] from backtrace buffer
         eval(shift(@insns));
         eval(shift(@insns));
        &vpxor  (@X[0],@X[0],@X[3]);
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));

        &vpxor  (@X[0],@X[0],@X[4]);            # "X[0]"^=("X[0]"<<96)<<<2
         eval(shift(@insns));
         eval(shift(@insns));
          &vmovdqa      (@X[4],&QWP(112-16+16*(($Xi)/5),"esp"));        # K_XX_XX
         eval(shift(@insns));
         eval(shift(@insns));

         foreach (@insns) { eval; }     # remaining instructions [if any]

  $Xi++;        push(@X,shift(@X));     # "rotate" X[]
}

sub Xupdate_avx_32_79()
{ use integer;
  my $body = shift;
  my @insns = (&$body,&$body,&$body,&$body);    # 32 to 48 instructions
  my ($a,$b,$c,$d,$e);

        &vpalignr(@X[2],@X[-1&7],@X[-2&7],8);   # compose "X[-6]"
        &vpxor  (@X[0],@X[0],@X[-4&7]); # "X[0]"="X[-32]"^"X[-16]"
         eval(shift(@insns));           # body_20_39
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));           # rol

        &vpxor  (@X[0],@X[0],@X[-7&7]); # "X[0]"^="X[-28]"
          &vmovdqa      (&QWP(64+16*(($Xi-4)%3),"esp"),@X[-4&7]);       # save X[] to backtrace buffer
         eval(shift(@insns));
         eval(shift(@insns));
         if ($Xi%5) {
          &vmovdqa      (@X[4],@X[3]);  # "perpetuate" K_XX_XX...
         } else {                       # ... or load next one
          &vmovdqa      (@X[4],&QWP(112-16+16*($Xi/5),"esp"));
         }
          &vpaddd       (@X[3],@X[3],@X[-1&7]);
         eval(shift(@insns));           # ror
         eval(shift(@insns));

        &vpxor  (@X[0],@X[0],@X[2]);            # "X[0]"^="X[-6]"
         eval(shift(@insns));           # body_20_39
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));           # rol

        &vpsrld (@X[2],@X[0],30);
          &vmovdqa      (&QWP(0+16*(($Xi-1)&3),"esp"),@X[3]);   # X[]+K xfer to IALU
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));           # ror
         eval(shift(@insns));

        &vpslld (@X[0],@X[0],2);
         eval(shift(@insns));           # body_20_39
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));           # rol
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));           # ror
         eval(shift(@insns));

        &vpor   (@X[0],@X[0],@X[2]);    # "X[0]"<<<=2
         eval(shift(@insns));           # body_20_39
         eval(shift(@insns));
          &vmovdqa      (@X[2],&QWP(64+16*(($Xi-6)%3),"esp")) if($Xi<19);       # restore X[] from backtrace buffer
         eval(shift(@insns));
         eval(shift(@insns));           # rol
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));           # ror
         eval(shift(@insns));

         foreach (@insns) { eval; }     # remaining instructions

  $Xi++;        push(@X,shift(@X));     # "rotate" X[]
}

sub Xuplast_avx_80()
{ use integer;
  my $body = shift;
  my @insns = (&$body,&$body,&$body,&$body);    # 32 instructions
  my ($a,$b,$c,$d,$e);

         eval(shift(@insns));
          &vpaddd       (@X[3],@X[3],@X[-1&7]);
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));

          &vmovdqa      (&QWP(0+16*(($Xi-1)&3),"esp"),@X[3]);   # X[]+K xfer IALU

         foreach (@insns) { eval; }             # remaining instructions

        &mov    ($inp=@T[1],&DWP(192+4,"esp"));
        &cmp    ($inp,&DWP(192+8,"esp"));
        &je     (&label("done"));

        &vmovdqa(@X[3],&QWP(112+48,"esp"));     # K_00_19
        &vmovdqa(@X[2],&QWP(112+64,"esp"));     # pbswap mask
        &vmovdqu(@X[-4&7],&QWP(0,$inp));        # load input
        &vmovdqu(@X[-3&7],&QWP(16,$inp));
        &vmovdqu(@X[-2&7],&QWP(32,$inp));
        &vmovdqu(@X[-1&7],&QWP(48,$inp));
        &add    ($inp,64);
        &vpshufb(@X[-4&7],@X[-4&7],@X[2]);              # byte swap
        &mov    (&DWP(192+4,"esp"),$inp);
        &vmovdqa(&QWP(112-16,"esp"),@X[3]);     # borrow last backtrace slot

  $Xi=0;
}

sub Xloop_avx()
{ use integer;
  my $body = shift;
  my @insns = (&$body,&$body,&$body,&$body);    # 32 instructions
  my ($a,$b,$c,$d,$e);

         eval(shift(@insns));
         eval(shift(@insns));
        &vpshufb        (@X[($Xi-3)&7],@X[($Xi-3)&7],@X[2]);
         eval(shift(@insns));
         eval(shift(@insns));
        &vpaddd (@X[$Xi&7],@X[($Xi-4)&7],@X[3]);
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));
         eval(shift(@insns));
        &vmovdqa        (&QWP(0+16*$Xi,"esp"),@X[$Xi&7]);       # X[]+K xfer to IALU
         eval(shift(@insns));
         eval(shift(@insns));

        foreach (@insns) { eval; }
  $Xi++;
}

sub Xtail_avx()
{ use integer;
  my $body = shift;
  my @insns = (&$body,&$body,&$body,&$body);    # 32 instructions
  my ($a,$b,$c,$d,$e);

        foreach (@insns) { eval; }
}

&set_label("loop",16);
        &Xupdate_avx_16_31(\&body_00_19);
        &Xupdate_avx_16_31(\&body_00_19);
        &Xupdate_avx_16_31(\&body_00_19);
        &Xupdate_avx_16_31(\&body_00_19);
        &Xupdate_avx_32_79(\&body_00_19);
        &Xupdate_avx_32_79(\&body_20_39);
        &Xupdate_avx_32_79(\&body_20_39);
        &Xupdate_avx_32_79(\&body_20_39);
        &Xupdate_avx_32_79(\&body_20_39);
        &Xupdate_avx_32_79(\&body_20_39);
        &Xupdate_avx_32_79(\&body_40_59);
        &Xupdate_avx_32_79(\&body_40_59);
        &Xupdate_avx_32_79(\&body_40_59);
        &Xupdate_avx_32_79(\&body_40_59);
        &Xupdate_avx_32_79(\&body_40_59);
        &Xupdate_avx_32_79(\&body_20_39);
        &Xuplast_avx_80(\&body_20_39);  # can jump to "done"

                                $saved_j=$j; @saved_V=@V;

        &Xloop_avx(\&body_20_39);
        &Xloop_avx(\&body_20_39);
        &Xloop_avx(\&body_20_39);

        &mov    (@T[1],&DWP(192,"esp"));        # update context
        &add    ($A,&DWP(0,@T[1]));
        &add    (@T[0],&DWP(4,@T[1]));          # $b
        &add    ($C,&DWP(8,@T[1]));
        &mov    (&DWP(0,@T[1]),$A);
        &add    ($D,&DWP(12,@T[1]));
        &mov    (&DWP(4,@T[1]),@T[0]);
        &add    ($E,&DWP(16,@T[1]));
        &mov    (&DWP(8,@T[1]),$C);
        &mov    ($B,@T[0]);
        &mov    (&DWP(12,@T[1]),$D);
        &mov    (&DWP(16,@T[1]),$E);

        &jmp    (&label("loop"));

&set_label("done",16);          $j=$saved_j; @V=@saved_V;

        &Xtail_avx(\&body_20_39);
        &Xtail_avx(\&body_20_39);
        &Xtail_avx(\&body_20_39);

        &vzeroall();

        &mov    (@T[1],&DWP(192,"esp"));        # update context
        &add    ($A,&DWP(0,@T[1]));
        &mov    ("esp",&DWP(192+12,"esp"));     # restore %esp
        &add    (@T[0],&DWP(4,@T[1]));          # $b
        &add    ($C,&DWP(8,@T[1]));
        &mov    (&DWP(0,@T[1]),$A);
        &add    ($D,&DWP(12,@T[1]));
        &mov    (&DWP(4,@T[1]),@T[0]);
        &add    ($E,&DWP(16,@T[1]));
        &mov    (&DWP(8,@T[1]),$C);
        &mov    (&DWP(12,@T[1]),$D);
        &mov    (&DWP(16,@T[1]),$E);
&function_end("_sha1_block_data_order_avx");
}
&set_label("K_XX_XX",64);
&data_word(0x5a827999,0x5a827999,0x5a827999,0x5a827999);        # K_00_19
&data_word(0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1);        # K_20_39
&data_word(0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc);        # K_40_59
&data_word(0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6);        # K_60_79
&data_word(0x00010203,0x04050607,0x08090a0b,0x0c0d0e0f);        # pbswap mask
}
&asciz("SHA1 block transform for x86, CRYPTOGAMS by <appro\@openssl.org>");

&asm_finish();