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Unified Diff: openssl/crypto/bn/asm/x86_64-mont5.pl

Issue 2072073002: Delete bundled copy of OpenSSL and replace with README. (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master
Patch Set: Delete bundled copy of OpenSSL and replace with README. Created 4 years, 6 months ago
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Index: openssl/crypto/bn/asm/x86_64-mont5.pl
diff --git a/openssl/crypto/bn/asm/x86_64-mont5.pl b/openssl/crypto/bn/asm/x86_64-mont5.pl
deleted file mode 100644
index 8f8dc5a59798aa88ac14deb90cf59a00a151a4c9..0000000000000000000000000000000000000000
--- a/openssl/crypto/bn/asm/x86_64-mont5.pl
+++ /dev/null
@@ -1,1071 +0,0 @@
-#!/usr/bin/env perl
-
-# ====================================================================
-# Written by Andy Polyakov <appro@openssl.org> 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/.
-# ====================================================================
-
-# August 2011.
-#
-# Companion to x86_64-mont.pl that optimizes cache-timing attack
-# countermeasures. The subroutines are produced by replacing bp[i]
-# references in their x86_64-mont.pl counterparts with cache-neutral
-# references to powers table computed in BN_mod_exp_mont_consttime.
-# In addition subroutine that scatters elements of the powers table
-# is implemented, so that scatter-/gathering can be tuned without
-# bn_exp.c modifications.
-
-$flavour = shift;
-$output = shift;
-if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
-
-$win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
-
-$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
-( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or
-( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or
-die "can't locate x86_64-xlate.pl";
-
-open OUT,"| \"$^X\" $xlate $flavour $output";
-*STDOUT=*OUT;
-
-# int bn_mul_mont_gather5(
-$rp="%rdi"; # BN_ULONG *rp,
-$ap="%rsi"; # const BN_ULONG *ap,
-$bp="%rdx"; # const BN_ULONG *bp,
-$np="%rcx"; # const BN_ULONG *np,
-$n0="%r8"; # const BN_ULONG *n0,
-$num="%r9"; # int num,
- # int idx); # 0 to 2^5-1, "index" in $bp holding
- # pre-computed powers of a', interlaced
- # in such manner that b[0] is $bp[idx],
- # b[1] is [2^5+idx], etc.
-$lo0="%r10";
-$hi0="%r11";
-$hi1="%r13";
-$i="%r14";
-$j="%r15";
-$m0="%rbx";
-$m1="%rbp";
-
-$code=<<___;
-.text
-
-.globl bn_mul_mont_gather5
-.type bn_mul_mont_gather5,\@function,6
-.align 64
-bn_mul_mont_gather5:
- test \$3,${num}d
- jnz .Lmul_enter
- cmp \$8,${num}d
- jb .Lmul_enter
- jmp .Lmul4x_enter
-
-.align 16
-.Lmul_enter:
- mov ${num}d,${num}d
- mov `($win64?56:8)`(%rsp),%r10d # load 7th argument
- push %rbx
- push %rbp
- push %r12
- push %r13
- push %r14
- push %r15
-___
-$code.=<<___ if ($win64);
- lea -0x28(%rsp),%rsp
- movaps %xmm6,(%rsp)
- movaps %xmm7,0x10(%rsp)
-.Lmul_alloca:
-___
-$code.=<<___;
- mov %rsp,%rax
- lea 2($num),%r11
- neg %r11
- lea (%rsp,%r11,8),%rsp # tp=alloca(8*(num+2))
- and \$-1024,%rsp # minimize TLB usage
-
- mov %rax,8(%rsp,$num,8) # tp[num+1]=%rsp
-.Lmul_body:
- mov $bp,%r12 # reassign $bp
-___
- $bp="%r12";
- $STRIDE=2**5*8; # 5 is "window size"
- $N=$STRIDE/4; # should match cache line size
-$code.=<<___;
- mov %r10,%r11
- shr \$`log($N/8)/log(2)`,%r10
- and \$`$N/8-1`,%r11
- not %r10
- lea .Lmagic_masks(%rip),%rax
- and \$`2**5/($N/8)-1`,%r10 # 5 is "window size"
- lea 96($bp,%r11,8),$bp # pointer within 1st cache line
- movq 0(%rax,%r10,8),%xmm4 # set of masks denoting which
- movq 8(%rax,%r10,8),%xmm5 # cache line contains element
- movq 16(%rax,%r10,8),%xmm6 # denoted by 7th argument
- movq 24(%rax,%r10,8),%xmm7
-
- movq `0*$STRIDE/4-96`($bp),%xmm0
- movq `1*$STRIDE/4-96`($bp),%xmm1
- pand %xmm4,%xmm0
- movq `2*$STRIDE/4-96`($bp),%xmm2
- pand %xmm5,%xmm1
- movq `3*$STRIDE/4-96`($bp),%xmm3
- pand %xmm6,%xmm2
- por %xmm1,%xmm0
- pand %xmm7,%xmm3
- por %xmm2,%xmm0
- lea $STRIDE($bp),$bp
- por %xmm3,%xmm0
-
- movq %xmm0,$m0 # m0=bp[0]
-
- mov ($n0),$n0 # pull n0[0] value
- mov ($ap),%rax
-
- xor $i,$i # i=0
- xor $j,$j # j=0
-
- movq `0*$STRIDE/4-96`($bp),%xmm0
- movq `1*$STRIDE/4-96`($bp),%xmm1
- pand %xmm4,%xmm0
- movq `2*$STRIDE/4-96`($bp),%xmm2
- pand %xmm5,%xmm1
-
- mov $n0,$m1
- mulq $m0 # ap[0]*bp[0]
- mov %rax,$lo0
- mov ($np),%rax
-
- movq `3*$STRIDE/4-96`($bp),%xmm3
- pand %xmm6,%xmm2
- por %xmm1,%xmm0
- pand %xmm7,%xmm3
-
- imulq $lo0,$m1 # "tp[0]"*n0
- mov %rdx,$hi0
-
- por %xmm2,%xmm0
- lea $STRIDE($bp),$bp
- por %xmm3,%xmm0
-
- mulq $m1 # np[0]*m1
- add %rax,$lo0 # discarded
- mov 8($ap),%rax
- adc \$0,%rdx
- mov %rdx,$hi1
-
- lea 1($j),$j # j++
- jmp .L1st_enter
-
-.align 16
-.L1st:
- add %rax,$hi1
- mov ($ap,$j,8),%rax
- adc \$0,%rdx
- add $hi0,$hi1 # np[j]*m1+ap[j]*bp[0]
- mov $lo0,$hi0
- adc \$0,%rdx
- mov $hi1,-16(%rsp,$j,8) # tp[j-1]
- mov %rdx,$hi1
-
-.L1st_enter:
- mulq $m0 # ap[j]*bp[0]
- add %rax,$hi0
- mov ($np,$j,8),%rax
- adc \$0,%rdx
- lea 1($j),$j # j++
- mov %rdx,$lo0
-
- mulq $m1 # np[j]*m1
- cmp $num,$j
- jne .L1st
-
- movq %xmm0,$m0 # bp[1]
-
- add %rax,$hi1
- mov ($ap),%rax # ap[0]
- adc \$0,%rdx
- add $hi0,$hi1 # np[j]*m1+ap[j]*bp[0]
- adc \$0,%rdx
- mov $hi1,-16(%rsp,$j,8) # tp[j-1]
- mov %rdx,$hi1
- mov $lo0,$hi0
-
- xor %rdx,%rdx
- add $hi0,$hi1
- adc \$0,%rdx
- mov $hi1,-8(%rsp,$num,8)
- mov %rdx,(%rsp,$num,8) # store upmost overflow bit
-
- lea 1($i),$i # i++
- jmp .Louter
-.align 16
-.Louter:
- xor $j,$j # j=0
- mov $n0,$m1
- mov (%rsp),$lo0
-
- movq `0*$STRIDE/4-96`($bp),%xmm0
- movq `1*$STRIDE/4-96`($bp),%xmm1
- pand %xmm4,%xmm0
- movq `2*$STRIDE/4-96`($bp),%xmm2
- pand %xmm5,%xmm1
-
- mulq $m0 # ap[0]*bp[i]
- add %rax,$lo0 # ap[0]*bp[i]+tp[0]
- mov ($np),%rax
- adc \$0,%rdx
-
- movq `3*$STRIDE/4-96`($bp),%xmm3
- pand %xmm6,%xmm2
- por %xmm1,%xmm0
- pand %xmm7,%xmm3
-
- imulq $lo0,$m1 # tp[0]*n0
- mov %rdx,$hi0
-
- por %xmm2,%xmm0
- lea $STRIDE($bp),$bp
- por %xmm3,%xmm0
-
- mulq $m1 # np[0]*m1
- add %rax,$lo0 # discarded
- mov 8($ap),%rax
- adc \$0,%rdx
- mov 8(%rsp),$lo0 # tp[1]
- mov %rdx,$hi1
-
- lea 1($j),$j # j++
- jmp .Linner_enter
-
-.align 16
-.Linner:
- add %rax,$hi1
- mov ($ap,$j,8),%rax
- adc \$0,%rdx
- add $lo0,$hi1 # np[j]*m1+ap[j]*bp[i]+tp[j]
- mov (%rsp,$j,8),$lo0
- adc \$0,%rdx
- mov $hi1,-16(%rsp,$j,8) # tp[j-1]
- mov %rdx,$hi1
-
-.Linner_enter:
- mulq $m0 # ap[j]*bp[i]
- add %rax,$hi0
- mov ($np,$j,8),%rax
- adc \$0,%rdx
- add $hi0,$lo0 # ap[j]*bp[i]+tp[j]
- mov %rdx,$hi0
- adc \$0,$hi0
- lea 1($j),$j # j++
-
- mulq $m1 # np[j]*m1
- cmp $num,$j
- jne .Linner
-
- movq %xmm0,$m0 # bp[i+1]
-
- add %rax,$hi1
- mov ($ap),%rax # ap[0]
- adc \$0,%rdx
- add $lo0,$hi1 # np[j]*m1+ap[j]*bp[i]+tp[j]
- mov (%rsp,$j,8),$lo0
- adc \$0,%rdx
- mov $hi1,-16(%rsp,$j,8) # tp[j-1]
- mov %rdx,$hi1
-
- xor %rdx,%rdx
- add $hi0,$hi1
- adc \$0,%rdx
- add $lo0,$hi1 # pull upmost overflow bit
- adc \$0,%rdx
- mov $hi1,-8(%rsp,$num,8)
- mov %rdx,(%rsp,$num,8) # store upmost overflow bit
-
- lea 1($i),$i # i++
- cmp $num,$i
- jl .Louter
-
- xor $i,$i # i=0 and clear CF!
- mov (%rsp),%rax # tp[0]
- lea (%rsp),$ap # borrow ap for tp
- mov $num,$j # j=num
- jmp .Lsub
-.align 16
-.Lsub: sbb ($np,$i,8),%rax
- mov %rax,($rp,$i,8) # rp[i]=tp[i]-np[i]
- mov 8($ap,$i,8),%rax # tp[i+1]
- lea 1($i),$i # i++
- dec $j # doesnn't affect CF!
- jnz .Lsub
-
- sbb \$0,%rax # handle upmost overflow bit
- xor $i,$i
- and %rax,$ap
- not %rax
- mov $rp,$np
- and %rax,$np
- mov $num,$j # j=num
- or $np,$ap # ap=borrow?tp:rp
-.align 16
-.Lcopy: # copy or in-place refresh
- mov ($ap,$i,8),%rax
- mov $i,(%rsp,$i,8) # zap temporary vector
- mov %rax,($rp,$i,8) # rp[i]=tp[i]
- lea 1($i),$i
- sub \$1,$j
- jnz .Lcopy
-
- mov 8(%rsp,$num,8),%rsi # restore %rsp
- mov \$1,%rax
-___
-$code.=<<___ if ($win64);
- movaps (%rsi),%xmm6
- movaps 0x10(%rsi),%xmm7
- lea 0x28(%rsi),%rsi
-___
-$code.=<<___;
- mov (%rsi),%r15
- mov 8(%rsi),%r14
- mov 16(%rsi),%r13
- mov 24(%rsi),%r12
- mov 32(%rsi),%rbp
- mov 40(%rsi),%rbx
- lea 48(%rsi),%rsp
-.Lmul_epilogue:
- ret
-.size bn_mul_mont_gather5,.-bn_mul_mont_gather5
-___
-{{{
-my @A=("%r10","%r11");
-my @N=("%r13","%rdi");
-$code.=<<___;
-.type bn_mul4x_mont_gather5,\@function,6
-.align 16
-bn_mul4x_mont_gather5:
-.Lmul4x_enter:
- mov ${num}d,${num}d
- mov `($win64?56:8)`(%rsp),%r10d # load 7th argument
- push %rbx
- push %rbp
- push %r12
- push %r13
- push %r14
- push %r15
-___
-$code.=<<___ if ($win64);
- lea -0x28(%rsp),%rsp
- movaps %xmm6,(%rsp)
- movaps %xmm7,0x10(%rsp)
-.Lmul4x_alloca:
-___
-$code.=<<___;
- mov %rsp,%rax
- lea 4($num),%r11
- neg %r11
- lea (%rsp,%r11,8),%rsp # tp=alloca(8*(num+4))
- and \$-1024,%rsp # minimize TLB usage
-
- mov %rax,8(%rsp,$num,8) # tp[num+1]=%rsp
-.Lmul4x_body:
- mov $rp,16(%rsp,$num,8) # tp[num+2]=$rp
- mov %rdx,%r12 # reassign $bp
-___
- $bp="%r12";
- $STRIDE=2**5*8; # 5 is "window size"
- $N=$STRIDE/4; # should match cache line size
-$code.=<<___;
- mov %r10,%r11
- shr \$`log($N/8)/log(2)`,%r10
- and \$`$N/8-1`,%r11
- not %r10
- lea .Lmagic_masks(%rip),%rax
- and \$`2**5/($N/8)-1`,%r10 # 5 is "window size"
- lea 96($bp,%r11,8),$bp # pointer within 1st cache line
- movq 0(%rax,%r10,8),%xmm4 # set of masks denoting which
- movq 8(%rax,%r10,8),%xmm5 # cache line contains element
- movq 16(%rax,%r10,8),%xmm6 # denoted by 7th argument
- movq 24(%rax,%r10,8),%xmm7
-
- movq `0*$STRIDE/4-96`($bp),%xmm0
- movq `1*$STRIDE/4-96`($bp),%xmm1
- pand %xmm4,%xmm0
- movq `2*$STRIDE/4-96`($bp),%xmm2
- pand %xmm5,%xmm1
- movq `3*$STRIDE/4-96`($bp),%xmm3
- pand %xmm6,%xmm2
- por %xmm1,%xmm0
- pand %xmm7,%xmm3
- por %xmm2,%xmm0
- lea $STRIDE($bp),$bp
- por %xmm3,%xmm0
-
- movq %xmm0,$m0 # m0=bp[0]
- mov ($n0),$n0 # pull n0[0] value
- mov ($ap),%rax
-
- xor $i,$i # i=0
- xor $j,$j # j=0
-
- movq `0*$STRIDE/4-96`($bp),%xmm0
- movq `1*$STRIDE/4-96`($bp),%xmm1
- pand %xmm4,%xmm0
- movq `2*$STRIDE/4-96`($bp),%xmm2
- pand %xmm5,%xmm1
-
- mov $n0,$m1
- mulq $m0 # ap[0]*bp[0]
- mov %rax,$A[0]
- mov ($np),%rax
-
- movq `3*$STRIDE/4-96`($bp),%xmm3
- pand %xmm6,%xmm2
- por %xmm1,%xmm0
- pand %xmm7,%xmm3
-
- imulq $A[0],$m1 # "tp[0]"*n0
- mov %rdx,$A[1]
-
- por %xmm2,%xmm0
- lea $STRIDE($bp),$bp
- por %xmm3,%xmm0
-
- mulq $m1 # np[0]*m1
- add %rax,$A[0] # discarded
- mov 8($ap),%rax
- adc \$0,%rdx
- mov %rdx,$N[1]
-
- mulq $m0
- add %rax,$A[1]
- mov 8($np),%rax
- adc \$0,%rdx
- mov %rdx,$A[0]
-
- mulq $m1
- add %rax,$N[1]
- mov 16($ap),%rax
- adc \$0,%rdx
- add $A[1],$N[1]
- lea 4($j),$j # j++
- adc \$0,%rdx
- mov $N[1],(%rsp)
- mov %rdx,$N[0]
- jmp .L1st4x
-.align 16
-.L1st4x:
- mulq $m0 # ap[j]*bp[0]
- add %rax,$A[0]
- mov -16($np,$j,8),%rax
- adc \$0,%rdx
- mov %rdx,$A[1]
-
- mulq $m1 # np[j]*m1
- add %rax,$N[0]
- mov -8($ap,$j,8),%rax
- adc \$0,%rdx
- add $A[0],$N[0] # np[j]*m1+ap[j]*bp[0]
- adc \$0,%rdx
- mov $N[0],-24(%rsp,$j,8) # tp[j-1]
- mov %rdx,$N[1]
-
- mulq $m0 # ap[j]*bp[0]
- add %rax,$A[1]
- mov -8($np,$j,8),%rax
- adc \$0,%rdx
- mov %rdx,$A[0]
-
- mulq $m1 # np[j]*m1
- add %rax,$N[1]
- mov ($ap,$j,8),%rax
- adc \$0,%rdx
- add $A[1],$N[1] # np[j]*m1+ap[j]*bp[0]
- adc \$0,%rdx
- mov $N[1],-16(%rsp,$j,8) # tp[j-1]
- mov %rdx,$N[0]
-
- mulq $m0 # ap[j]*bp[0]
- add %rax,$A[0]
- mov ($np,$j,8),%rax
- adc \$0,%rdx
- mov %rdx,$A[1]
-
- mulq $m1 # np[j]*m1
- add %rax,$N[0]
- mov 8($ap,$j,8),%rax
- adc \$0,%rdx
- add $A[0],$N[0] # np[j]*m1+ap[j]*bp[0]
- adc \$0,%rdx
- mov $N[0],-8(%rsp,$j,8) # tp[j-1]
- mov %rdx,$N[1]
-
- mulq $m0 # ap[j]*bp[0]
- add %rax,$A[1]
- mov 8($np,$j,8),%rax
- adc \$0,%rdx
- lea 4($j),$j # j++
- mov %rdx,$A[0]
-
- mulq $m1 # np[j]*m1
- add %rax,$N[1]
- mov -16($ap,$j,8),%rax
- adc \$0,%rdx
- add $A[1],$N[1] # np[j]*m1+ap[j]*bp[0]
- adc \$0,%rdx
- mov $N[1],-32(%rsp,$j,8) # tp[j-1]
- mov %rdx,$N[0]
- cmp $num,$j
- jl .L1st4x
-
- mulq $m0 # ap[j]*bp[0]
- add %rax,$A[0]
- mov -16($np,$j,8),%rax
- adc \$0,%rdx
- mov %rdx,$A[1]
-
- mulq $m1 # np[j]*m1
- add %rax,$N[0]
- mov -8($ap,$j,8),%rax
- adc \$0,%rdx
- add $A[0],$N[0] # np[j]*m1+ap[j]*bp[0]
- adc \$0,%rdx
- mov $N[0],-24(%rsp,$j,8) # tp[j-1]
- mov %rdx,$N[1]
-
- mulq $m0 # ap[j]*bp[0]
- add %rax,$A[1]
- mov -8($np,$j,8),%rax
- adc \$0,%rdx
- mov %rdx,$A[0]
-
- mulq $m1 # np[j]*m1
- add %rax,$N[1]
- mov ($ap),%rax # ap[0]
- adc \$0,%rdx
- add $A[1],$N[1] # np[j]*m1+ap[j]*bp[0]
- adc \$0,%rdx
- mov $N[1],-16(%rsp,$j,8) # tp[j-1]
- mov %rdx,$N[0]
-
- movq %xmm0,$m0 # bp[1]
-
- xor $N[1],$N[1]
- add $A[0],$N[0]
- adc \$0,$N[1]
- mov $N[0],-8(%rsp,$j,8)
- mov $N[1],(%rsp,$j,8) # store upmost overflow bit
-
- lea 1($i),$i # i++
-.align 4
-.Louter4x:
- xor $j,$j # j=0
- movq `0*$STRIDE/4-96`($bp),%xmm0
- movq `1*$STRIDE/4-96`($bp),%xmm1
- pand %xmm4,%xmm0
- movq `2*$STRIDE/4-96`($bp),%xmm2
- pand %xmm5,%xmm1
-
- mov (%rsp),$A[0]
- mov $n0,$m1
- mulq $m0 # ap[0]*bp[i]
- add %rax,$A[0] # ap[0]*bp[i]+tp[0]
- mov ($np),%rax
- adc \$0,%rdx
-
- movq `3*$STRIDE/4-96`($bp),%xmm3
- pand %xmm6,%xmm2
- por %xmm1,%xmm0
- pand %xmm7,%xmm3
-
- imulq $A[0],$m1 # tp[0]*n0
- mov %rdx,$A[1]
-
- por %xmm2,%xmm0
- lea $STRIDE($bp),$bp
- por %xmm3,%xmm0
-
- mulq $m1 # np[0]*m1
- add %rax,$A[0] # "$N[0]", discarded
- mov 8($ap),%rax
- adc \$0,%rdx
- mov %rdx,$N[1]
-
- mulq $m0 # ap[j]*bp[i]
- add %rax,$A[1]
- mov 8($np),%rax
- adc \$0,%rdx
- add 8(%rsp),$A[1] # +tp[1]
- adc \$0,%rdx
- mov %rdx,$A[0]
-
- mulq $m1 # np[j]*m1
- add %rax,$N[1]
- mov 16($ap),%rax
- adc \$0,%rdx
- add $A[1],$N[1] # np[j]*m1+ap[j]*bp[i]+tp[j]
- lea 4($j),$j # j+=2
- adc \$0,%rdx
- mov %rdx,$N[0]
- jmp .Linner4x
-.align 16
-.Linner4x:
- mulq $m0 # ap[j]*bp[i]
- add %rax,$A[0]
- mov -16($np,$j,8),%rax
- adc \$0,%rdx
- add -16(%rsp,$j,8),$A[0] # ap[j]*bp[i]+tp[j]
- adc \$0,%rdx
- mov %rdx,$A[1]
-
- mulq $m1 # np[j]*m1
- add %rax,$N[0]
- mov -8($ap,$j,8),%rax
- adc \$0,%rdx
- add $A[0],$N[0]
- adc \$0,%rdx
- mov $N[1],-32(%rsp,$j,8) # tp[j-1]
- mov %rdx,$N[1]
-
- mulq $m0 # ap[j]*bp[i]
- add %rax,$A[1]
- mov -8($np,$j,8),%rax
- adc \$0,%rdx
- add -8(%rsp,$j,8),$A[1]
- adc \$0,%rdx
- mov %rdx,$A[0]
-
- mulq $m1 # np[j]*m1
- add %rax,$N[1]
- mov ($ap,$j,8),%rax
- adc \$0,%rdx
- add $A[1],$N[1]
- adc \$0,%rdx
- mov $N[0],-24(%rsp,$j,8) # tp[j-1]
- mov %rdx,$N[0]
-
- mulq $m0 # ap[j]*bp[i]
- add %rax,$A[0]
- mov ($np,$j,8),%rax
- adc \$0,%rdx
- add (%rsp,$j,8),$A[0] # ap[j]*bp[i]+tp[j]
- adc \$0,%rdx
- mov %rdx,$A[1]
-
- mulq $m1 # np[j]*m1
- add %rax,$N[0]
- mov 8($ap,$j,8),%rax
- adc \$0,%rdx
- add $A[0],$N[0]
- adc \$0,%rdx
- mov $N[1],-16(%rsp,$j,8) # tp[j-1]
- mov %rdx,$N[1]
-
- mulq $m0 # ap[j]*bp[i]
- add %rax,$A[1]
- mov 8($np,$j,8),%rax
- adc \$0,%rdx
- add 8(%rsp,$j,8),$A[1]
- adc \$0,%rdx
- lea 4($j),$j # j++
- mov %rdx,$A[0]
-
- mulq $m1 # np[j]*m1
- add %rax,$N[1]
- mov -16($ap,$j,8),%rax
- adc \$0,%rdx
- add $A[1],$N[1]
- adc \$0,%rdx
- mov $N[0],-40(%rsp,$j,8) # tp[j-1]
- mov %rdx,$N[0]
- cmp $num,$j
- jl .Linner4x
-
- mulq $m0 # ap[j]*bp[i]
- add %rax,$A[0]
- mov -16($np,$j,8),%rax
- adc \$0,%rdx
- add -16(%rsp,$j,8),$A[0] # ap[j]*bp[i]+tp[j]
- adc \$0,%rdx
- mov %rdx,$A[1]
-
- mulq $m1 # np[j]*m1
- add %rax,$N[0]
- mov -8($ap,$j,8),%rax
- adc \$0,%rdx
- add $A[0],$N[0]
- adc \$0,%rdx
- mov $N[1],-32(%rsp,$j,8) # tp[j-1]
- mov %rdx,$N[1]
-
- mulq $m0 # ap[j]*bp[i]
- add %rax,$A[1]
- mov -8($np,$j,8),%rax
- adc \$0,%rdx
- add -8(%rsp,$j,8),$A[1]
- adc \$0,%rdx
- lea 1($i),$i # i++
- mov %rdx,$A[0]
-
- mulq $m1 # np[j]*m1
- add %rax,$N[1]
- mov ($ap),%rax # ap[0]
- adc \$0,%rdx
- add $A[1],$N[1]
- adc \$0,%rdx
- mov $N[0],-24(%rsp,$j,8) # tp[j-1]
- mov %rdx,$N[0]
-
- movq %xmm0,$m0 # bp[i+1]
- mov $N[1],-16(%rsp,$j,8) # tp[j-1]
-
- xor $N[1],$N[1]
- add $A[0],$N[0]
- adc \$0,$N[1]
- add (%rsp,$num,8),$N[0] # pull upmost overflow bit
- adc \$0,$N[1]
- mov $N[0],-8(%rsp,$j,8)
- mov $N[1],(%rsp,$j,8) # store upmost overflow bit
-
- cmp $num,$i
- jl .Louter4x
-___
-{
-my @ri=("%rax","%rdx",$m0,$m1);
-$code.=<<___;
- mov 16(%rsp,$num,8),$rp # restore $rp
- mov 0(%rsp),@ri[0] # tp[0]
- pxor %xmm0,%xmm0
- mov 8(%rsp),@ri[1] # tp[1]
- shr \$2,$num # num/=4
- lea (%rsp),$ap # borrow ap for tp
- xor $i,$i # i=0 and clear CF!
-
- sub 0($np),@ri[0]
- mov 16($ap),@ri[2] # tp[2]
- mov 24($ap),@ri[3] # tp[3]
- sbb 8($np),@ri[1]
- lea -1($num),$j # j=num/4-1
- jmp .Lsub4x
-.align 16
-.Lsub4x:
- mov @ri[0],0($rp,$i,8) # rp[i]=tp[i]-np[i]
- mov @ri[1],8($rp,$i,8) # rp[i]=tp[i]-np[i]
- sbb 16($np,$i,8),@ri[2]
- mov 32($ap,$i,8),@ri[0] # tp[i+1]
- mov 40($ap,$i,8),@ri[1]
- sbb 24($np,$i,8),@ri[3]
- mov @ri[2],16($rp,$i,8) # rp[i]=tp[i]-np[i]
- mov @ri[3],24($rp,$i,8) # rp[i]=tp[i]-np[i]
- sbb 32($np,$i,8),@ri[0]
- mov 48($ap,$i,8),@ri[2]
- mov 56($ap,$i,8),@ri[3]
- sbb 40($np,$i,8),@ri[1]
- lea 4($i),$i # i++
- dec $j # doesnn't affect CF!
- jnz .Lsub4x
-
- mov @ri[0],0($rp,$i,8) # rp[i]=tp[i]-np[i]
- mov 32($ap,$i,8),@ri[0] # load overflow bit
- sbb 16($np,$i,8),@ri[2]
- mov @ri[1],8($rp,$i,8) # rp[i]=tp[i]-np[i]
- sbb 24($np,$i,8),@ri[3]
- mov @ri[2],16($rp,$i,8) # rp[i]=tp[i]-np[i]
-
- sbb \$0,@ri[0] # handle upmost overflow bit
- mov @ri[3],24($rp,$i,8) # rp[i]=tp[i]-np[i]
- xor $i,$i # i=0
- and @ri[0],$ap
- not @ri[0]
- mov $rp,$np
- and @ri[0],$np
- lea -1($num),$j
- or $np,$ap # ap=borrow?tp:rp
-
- movdqu ($ap),%xmm1
- movdqa %xmm0,(%rsp)
- movdqu %xmm1,($rp)
- jmp .Lcopy4x
-.align 16
-.Lcopy4x: # copy or in-place refresh
- movdqu 16($ap,$i),%xmm2
- movdqu 32($ap,$i),%xmm1
- movdqa %xmm0,16(%rsp,$i)
- movdqu %xmm2,16($rp,$i)
- movdqa %xmm0,32(%rsp,$i)
- movdqu %xmm1,32($rp,$i)
- lea 32($i),$i
- dec $j
- jnz .Lcopy4x
-
- shl \$2,$num
- movdqu 16($ap,$i),%xmm2
- movdqa %xmm0,16(%rsp,$i)
- movdqu %xmm2,16($rp,$i)
-___
-}
-$code.=<<___;
- mov 8(%rsp,$num,8),%rsi # restore %rsp
- mov \$1,%rax
-___
-$code.=<<___ if ($win64);
- movaps (%rsi),%xmm6
- movaps 0x10(%rsi),%xmm7
- lea 0x28(%rsi),%rsi
-___
-$code.=<<___;
- mov (%rsi),%r15
- mov 8(%rsi),%r14
- mov 16(%rsi),%r13
- mov 24(%rsi),%r12
- mov 32(%rsi),%rbp
- mov 40(%rsi),%rbx
- lea 48(%rsi),%rsp
-.Lmul4x_epilogue:
- ret
-.size bn_mul4x_mont_gather5,.-bn_mul4x_mont_gather5
-___
-}}}
-
-{
-my ($inp,$num,$tbl,$idx)=$win64?("%rcx","%rdx","%r8", "%r9") : # Win64 order
- ("%rdi","%rsi","%rdx","%rcx"); # Unix order
-my $out=$inp;
-my $STRIDE=2**5*8;
-my $N=$STRIDE/4;
-
-$code.=<<___;
-.globl bn_scatter5
-.type bn_scatter5,\@abi-omnipotent
-.align 16
-bn_scatter5:
- cmp \$0, $num
- jz .Lscatter_epilogue
- lea ($tbl,$idx,8),$tbl
-.Lscatter:
- mov ($inp),%rax
- lea 8($inp),$inp
- mov %rax,($tbl)
- lea 32*8($tbl),$tbl
- sub \$1,$num
- jnz .Lscatter
-.Lscatter_epilogue:
- ret
-.size bn_scatter5,.-bn_scatter5
-
-.globl bn_gather5
-.type bn_gather5,\@abi-omnipotent
-.align 16
-bn_gather5:
-___
-$code.=<<___ if ($win64);
-.LSEH_begin_bn_gather5:
- # I can't trust assembler to use specific encoding:-(
- .byte 0x48,0x83,0xec,0x28 #sub \$0x28,%rsp
- .byte 0x0f,0x29,0x34,0x24 #movaps %xmm6,(%rsp)
- .byte 0x0f,0x29,0x7c,0x24,0x10 #movdqa %xmm7,0x10(%rsp)
-___
-$code.=<<___;
- mov $idx,%r11
- shr \$`log($N/8)/log(2)`,$idx
- and \$`$N/8-1`,%r11
- not $idx
- lea .Lmagic_masks(%rip),%rax
- and \$`2**5/($N/8)-1`,$idx # 5 is "window size"
- lea 96($tbl,%r11,8),$tbl # pointer within 1st cache line
- movq 0(%rax,$idx,8),%xmm4 # set of masks denoting which
- movq 8(%rax,$idx,8),%xmm5 # cache line contains element
- movq 16(%rax,$idx,8),%xmm6 # denoted by 7th argument
- movq 24(%rax,$idx,8),%xmm7
- jmp .Lgather
-.align 16
-.Lgather:
- movq `0*$STRIDE/4-96`($tbl),%xmm0
- movq `1*$STRIDE/4-96`($tbl),%xmm1
- pand %xmm4,%xmm0
- movq `2*$STRIDE/4-96`($tbl),%xmm2
- pand %xmm5,%xmm1
- movq `3*$STRIDE/4-96`($tbl),%xmm3
- pand %xmm6,%xmm2
- por %xmm1,%xmm0
- pand %xmm7,%xmm3
- por %xmm2,%xmm0
- lea $STRIDE($tbl),$tbl
- por %xmm3,%xmm0
-
- movq %xmm0,($out) # m0=bp[0]
- lea 8($out),$out
- sub \$1,$num
- jnz .Lgather
-___
-$code.=<<___ if ($win64);
- movaps %xmm6,(%rsp)
- movaps %xmm7,0x10(%rsp)
- lea 0x28(%rsp),%rsp
-___
-$code.=<<___;
- ret
-.LSEH_end_bn_gather5:
-.size bn_gather5,.-bn_gather5
-___
-}
-$code.=<<___;
-.align 64
-.Lmagic_masks:
- .long 0,0, 0,0, 0,0, -1,-1
- .long 0,0, 0,0, 0,0, 0,0
-.asciz "Montgomery Multiplication with scatter/gather for x86_64, CRYPTOGAMS by <appro\@openssl.org>"
-___
-
-# EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame,
-# CONTEXT *context,DISPATCHER_CONTEXT *disp)
-if ($win64) {
-$rec="%rcx";
-$frame="%rdx";
-$context="%r8";
-$disp="%r9";
-
-$code.=<<___;
-.extern __imp_RtlVirtualUnwind
-.type mul_handler,\@abi-omnipotent
-.align 16
-mul_handler:
- push %rsi
- push %rdi
- push %rbx
- push %rbp
- push %r12
- push %r13
- push %r14
- push %r15
- pushfq
- sub \$64,%rsp
-
- mov 120($context),%rax # pull context->Rax
- mov 248($context),%rbx # pull context->Rip
-
- mov 8($disp),%rsi # disp->ImageBase
- mov 56($disp),%r11 # disp->HandlerData
-
- mov 0(%r11),%r10d # HandlerData[0]
- lea (%rsi,%r10),%r10 # end of prologue label
- cmp %r10,%rbx # context->Rip<end of prologue label
- jb .Lcommon_seh_tail
-
- lea `40+48`(%rax),%rax
-
- mov 4(%r11),%r10d # HandlerData[1]
- lea (%rsi,%r10),%r10 # end of alloca label
- cmp %r10,%rbx # context->Rip<end of alloca label
- jb .Lcommon_seh_tail
-
- mov 152($context),%rax # pull context->Rsp
-
- mov 8(%r11),%r10d # HandlerData[2]
- lea (%rsi,%r10),%r10 # epilogue label
- cmp %r10,%rbx # context->Rip>=epilogue label
- jae .Lcommon_seh_tail
-
- mov 192($context),%r10 # pull $num
- mov 8(%rax,%r10,8),%rax # pull saved stack pointer
-
- movaps (%rax),%xmm0
- movaps 16(%rax),%xmm1
- lea `40+48`(%rax),%rax
-
- mov -8(%rax),%rbx
- mov -16(%rax),%rbp
- mov -24(%rax),%r12
- mov -32(%rax),%r13
- mov -40(%rax),%r14
- mov -48(%rax),%r15
- mov %rbx,144($context) # restore context->Rbx
- mov %rbp,160($context) # restore context->Rbp
- mov %r12,216($context) # restore context->R12
- mov %r13,224($context) # restore context->R13
- mov %r14,232($context) # restore context->R14
- mov %r15,240($context) # restore context->R15
- movups %xmm0,512($context) # restore context->Xmm6
- movups %xmm1,528($context) # restore context->Xmm7
-
-.Lcommon_seh_tail:
- mov 8(%rax),%rdi
- mov 16(%rax),%rsi
- mov %rax,152($context) # restore context->Rsp
- mov %rsi,168($context) # restore context->Rsi
- mov %rdi,176($context) # restore context->Rdi
-
- mov 40($disp),%rdi # disp->ContextRecord
- mov $context,%rsi # context
- mov \$154,%ecx # sizeof(CONTEXT)
- .long 0xa548f3fc # cld; rep movsq
-
- mov $disp,%rsi
- xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER
- mov 8(%rsi),%rdx # arg2, disp->ImageBase
- mov 0(%rsi),%r8 # arg3, disp->ControlPc
- mov 16(%rsi),%r9 # arg4, disp->FunctionEntry
- mov 40(%rsi),%r10 # disp->ContextRecord
- lea 56(%rsi),%r11 # &disp->HandlerData
- lea 24(%rsi),%r12 # &disp->EstablisherFrame
- mov %r10,32(%rsp) # arg5
- mov %r11,40(%rsp) # arg6
- mov %r12,48(%rsp) # arg7
- mov %rcx,56(%rsp) # arg8, (NULL)
- call *__imp_RtlVirtualUnwind(%rip)
-
- mov \$1,%eax # ExceptionContinueSearch
- add \$64,%rsp
- popfq
- pop %r15
- pop %r14
- pop %r13
- pop %r12
- pop %rbp
- pop %rbx
- pop %rdi
- pop %rsi
- ret
-.size mul_handler,.-mul_handler
-
-.section .pdata
-.align 4
- .rva .LSEH_begin_bn_mul_mont_gather5
- .rva .LSEH_end_bn_mul_mont_gather5
- .rva .LSEH_info_bn_mul_mont_gather5
-
- .rva .LSEH_begin_bn_mul4x_mont_gather5
- .rva .LSEH_end_bn_mul4x_mont_gather5
- .rva .LSEH_info_bn_mul4x_mont_gather5
-
- .rva .LSEH_begin_bn_gather5
- .rva .LSEH_end_bn_gather5
- .rva .LSEH_info_bn_gather5
-
-.section .xdata
-.align 8
-.LSEH_info_bn_mul_mont_gather5:
- .byte 9,0,0,0
- .rva mul_handler
- .rva .Lmul_alloca,.Lmul_body,.Lmul_epilogue # HandlerData[]
-.align 8
-.LSEH_info_bn_mul4x_mont_gather5:
- .byte 9,0,0,0
- .rva mul_handler
- .rva .Lmul4x_alloca,.Lmul4x_body,.Lmul4x_epilogue # HandlerData[]
-.align 8
-.LSEH_info_bn_gather5:
- .byte 0x01,0x0d,0x05,0x00
- .byte 0x0d,0x78,0x01,0x00 #movaps 0x10(rsp),xmm7
- .byte 0x08,0x68,0x00,0x00 #movaps (rsp),xmm6
- .byte 0x04,0x42,0x00,0x00 #sub rsp,0x28
-.align 8
-___
-}
-
-$code =~ s/\`([^\`]*)\`/eval($1)/gem;
-
-print $code;
-close STDOUT;
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