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| #! /usr/bin/env perl
| # Copyright 2005-2020 The OpenSSL Project Authors. All Rights Reserved.
| #
| # Licensed under the OpenSSL license (the "License"). You may not use
| # this file except in compliance with the License. You can obtain a copy
| # in the file LICENSE in the source distribution or at
| # https://www.openssl.org/source/license.html
|
|
| # ====================================================================
| # 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/.
| # ====================================================================
|
| # October 2005.
| #
| # Montgomery multiplication routine for x86_64. While it gives modest
| # 9% improvement of rsa4096 sign on Opteron, rsa512 sign runs more
| # than twice, >2x, as fast. Most common rsa1024 sign is improved by
| # respectful 50%. It remains to be seen if loop unrolling and
| # dedicated squaring routine can provide further improvement...
|
| # July 2011.
| #
| # Add dedicated squaring procedure. Performance improvement varies
| # from platform to platform, but in average it's ~5%/15%/25%/33%
| # for 512-/1024-/2048-/4096-bit RSA *sign* benchmarks respectively.
|
| # August 2011.
| #
| # Unroll and modulo-schedule inner loops in such manner that they
| # are "fallen through" for input lengths of 8, which is critical for
| # 1024-bit RSA *sign*. Average performance improvement in comparison
| # to *initial* version of this module from 2005 is ~0%/30%/40%/45%
| # for 512-/1024-/2048-/4096-bit RSA *sign* benchmarks respectively.
|
| # June 2013.
| #
| # Optimize reduction in squaring procedure and improve 1024+-bit RSA
| # sign performance by 10-16% on Intel Sandy Bridge and later
| # (virtually same on non-Intel processors).
|
| # August 2013.
| #
| # Add MULX/ADOX/ADCX code path.
|
| $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;
|
| if (`$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
| =~ /GNU assembler version ([2-9]\.[0-9]+)/) {
| $addx = ($1>=2.23);
| }
|
| if (!$addx && $win64 && ($flavour =~ /nasm/ || $ENV{ASM} =~ /nasm/) &&
| `nasm -v 2>&1` =~ /NASM version ([2-9]\.[0-9]+)/) {
| $addx = ($1>=2.10);
| }
|
| if (!$addx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
| `ml64 2>&1` =~ /Version ([0-9]+)\./) {
| $addx = ($1>=12);
| }
|
| if (!$addx && `$ENV{CC} -v 2>&1` =~ /((?:clang|LLVM) version|.*based on LLVM) ([0-9]+)\.([0-9]+)/) {
| my $ver = $2 + $3/100.0; # 3.1->3.01, 3.10->3.10
| $addx = ($ver>=3.03);
| }
|
| # int bn_mul_mont(
| $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);
| $lo0="%r10";
| $hi0="%r11";
| $hi1="%r13";
| $i="%r14";
| $j="%r15";
| $m0="%rbx";
| $m1="%rbp";
|
| $code=<<___;
| .text
|
| .extern OPENSSL_ia32cap_P
|
| .globl bn_mul_mont
| .type bn_mul_mont,\@function,6
| .align 16
| bn_mul_mont:
| .cfi_startproc
| mov ${num}d,${num}d
| mov %rsp,%rax
| .cfi_def_cfa_register %rax
| test \$3,${num}d
| jnz .Lmul_enter
| cmp \$8,${num}d
| jb .Lmul_enter
| ___
| $code.=<<___ if ($addx);
| mov OPENSSL_ia32cap_P+8(%rip),%r11d
| ___
| $code.=<<___;
| cmp $ap,$bp
| jne .Lmul4x_enter
| test \$7,${num}d
| jz .Lsqr8x_enter
| jmp .Lmul4x_enter
|
| .align 16
| .Lmul_enter:
| push %rbx
| .cfi_push %rbx
| push %rbp
| .cfi_push %rbp
| push %r12
| .cfi_push %r12
| push %r13
| .cfi_push %r13
| push %r14
| .cfi_push %r14
| push %r15
| .cfi_push %r15
|
| neg $num
| mov %rsp,%r11
| lea -16(%rsp,$num,8),%r10 # future alloca(8*(num+2))
| neg $num # restore $num
| and \$-1024,%r10 # minimize TLB usage
|
| # An OS-agnostic version of __chkstk.
| #
| # Some OSes (Windows) insist on stack being "wired" to
| # physical memory in strictly sequential manner, i.e. if stack
| # allocation spans two pages, then reference to farmost one can
| # be punishable by SEGV. But page walking can do good even on
| # other OSes, because it guarantees that villain thread hits
| # the guard page before it can make damage to innocent one...
| sub %r10,%r11
| and \$-4096,%r11
| lea (%r10,%r11),%rsp
| mov (%rsp),%r11
| cmp %r10,%rsp
| ja .Lmul_page_walk
| jmp .Lmul_page_walk_done
|
| .align 16
| .Lmul_page_walk:
| lea -4096(%rsp),%rsp
| mov (%rsp),%r11
| cmp %r10,%rsp
| ja .Lmul_page_walk
| .Lmul_page_walk_done:
|
| mov %rax,8(%rsp,$num,8) # tp[num+1]=%rsp
| .cfi_cfa_expression %rsp+8,$num,8,mul,plus,deref,+8
| .Lmul_body:
| mov $bp,%r12 # reassign $bp
| ___
| $bp="%r12";
| $code.=<<___;
| mov ($n0),$n0 # pull n0[0] value
| mov ($bp),$m0 # m0=bp[0]
| mov ($ap),%rax
|
| xor $i,$i # i=0
| xor $j,$j # j=0
|
| mov $n0,$m1
| mulq $m0 # ap[0]*bp[0]
| mov %rax,$lo0
| mov ($np),%rax
|
| imulq $lo0,$m1 # "tp[0]"*n0
| mov %rdx,$hi0
|
| 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
|
| 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),$i # i++
| jmp .Louter
| .align 16
| .Louter:
| mov ($bp,$i,8),$m0 # m0=bp[i]
| xor $j,$j # j=0
| mov $n0,$m1
| mov (%rsp),$lo0
| mulq $m0 # ap[0]*bp[i]
| add %rax,$lo0 # ap[0]*bp[i]+tp[0]
| mov ($np),%rax
| adc \$0,%rdx
|
| imulq $lo0,$m1 # tp[0]*n0
| mov %rdx,$hi0
|
| 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
|
| 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
| jb .Louter
|
| xor $i,$i # i=0 and clear CF!
| mov (%rsp),%rax # tp[0]
| mov $num,$j # j=num
|
| .align 16
| .Lsub: sbb ($np,$i,8),%rax
| mov %rax,($rp,$i,8) # rp[i]=tp[i]-np[i]
| mov 8(%rsp,$i,8),%rax # tp[i+1]
| lea 1($i),$i # i++
| dec $j # doesn't affect CF!
| jnz .Lsub
|
| sbb \$0,%rax # handle upmost overflow bit
| mov \$-1,%rbx
| xor %rax,%rbx # not %rax
| xor $i,$i
| mov $num,$j # j=num
|
| .Lcopy: # conditional copy
| mov ($rp,$i,8),%rcx
| mov (%rsp,$i,8),%rdx
| and %rbx,%rcx
| and %rax,%rdx
| mov $num,(%rsp,$i,8) # zap temporary vector
| or %rcx,%rdx
| mov %rdx,($rp,$i,8) # rp[i]=tp[i]
| lea 1($i),$i
| sub \$1,$j
| jnz .Lcopy
|
| mov 8(%rsp,$num,8),%rsi # restore %rsp
| .cfi_def_cfa %rsi,8
| mov \$1,%rax
| mov -48(%rsi),%r15
| .cfi_restore %r15
| mov -40(%rsi),%r14
| .cfi_restore %r14
| mov -32(%rsi),%r13
| .cfi_restore %r13
| mov -24(%rsi),%r12
| .cfi_restore %r12
| mov -16(%rsi),%rbp
| .cfi_restore %rbp
| mov -8(%rsi),%rbx
| .cfi_restore %rbx
| lea (%rsi),%rsp
| .cfi_def_cfa_register %rsp
| .Lmul_epilogue:
| ret
| .cfi_endproc
| .size bn_mul_mont,.-bn_mul_mont
| ___
| {{{
| my @A=("%r10","%r11");
| my @N=("%r13","%rdi");
| $code.=<<___;
| .type bn_mul4x_mont,\@function,6
| .align 16
| bn_mul4x_mont:
| .cfi_startproc
| mov ${num}d,${num}d
| mov %rsp,%rax
| .cfi_def_cfa_register %rax
| .Lmul4x_enter:
| ___
| $code.=<<___ if ($addx);
| and \$0x80100,%r11d
| cmp \$0x80100,%r11d
| je .Lmulx4x_enter
| ___
| $code.=<<___;
| push %rbx
| .cfi_push %rbx
| push %rbp
| .cfi_push %rbp
| push %r12
| .cfi_push %r12
| push %r13
| .cfi_push %r13
| push %r14
| .cfi_push %r14
| push %r15
| .cfi_push %r15
|
| neg $num
| mov %rsp,%r11
| lea -32(%rsp,$num,8),%r10 # future alloca(8*(num+4))
| neg $num # restore
| and \$-1024,%r10 # minimize TLB usage
|
| sub %r10,%r11
| and \$-4096,%r11
| lea (%r10,%r11),%rsp
| mov (%rsp),%r11
| cmp %r10,%rsp
| ja .Lmul4x_page_walk
| jmp .Lmul4x_page_walk_done
|
| .Lmul4x_page_walk:
| lea -4096(%rsp),%rsp
| mov (%rsp),%r11
| cmp %r10,%rsp
| ja .Lmul4x_page_walk
| .Lmul4x_page_walk_done:
|
| mov %rax,8(%rsp,$num,8) # tp[num+1]=%rsp
| .cfi_cfa_expression %rsp+8,$num,8,mul,plus,deref,+8
| .Lmul4x_body:
| mov $rp,16(%rsp,$num,8) # tp[num+2]=$rp
| mov %rdx,%r12 # reassign $bp
| ___
| $bp="%r12";
| $code.=<<___;
| mov ($n0),$n0 # pull n0[0] value
| mov ($bp),$m0 # m0=bp[0]
| mov ($ap),%rax
|
| xor $i,$i # i=0
| xor $j,$j # j=0
|
| mov $n0,$m1
| mulq $m0 # ap[0]*bp[0]
| mov %rax,$A[0]
| mov ($np),%rax
|
| imulq $A[0],$m1 # "tp[0]"*n0
| mov %rdx,$A[1]
|
| 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
| jb .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]
|
| 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:
| mov ($bp,$i,8),$m0 # m0=bp[i]
| xor $j,$j # j=0
| 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
|
| imulq $A[0],$m1 # tp[0]*n0
| mov %rdx,$A[1]
|
| 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 $N[1],(%rsp) # tp[j-1]
| mov %rdx,$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 $N[0],-24(%rsp,$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 $N[1],-16(%rsp,$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 $N[0],-8(%rsp,$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 $N[1],-32(%rsp,$j,8) # tp[j-1]
| mov %rdx,$N[0]
| cmp $num,$j
| jb .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 $N[0],-24(%rsp,$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 $N[1],-16(%rsp,$j,8) # tp[j-1]
| mov %rdx,$N[0]
|
| 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
| jb .Louter4x
| ___
| {
| my @ri=("%rax","%rdx",$m0,$m1);
| $code.=<<___;
| mov 16(%rsp,$num,8),$rp # restore $rp
| lea -4($num),$j
| mov 0(%rsp),@ri[0] # tp[0]
| mov 8(%rsp),@ri[1] # tp[1]
| shr \$2,$j # j=num/4-1
| 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]
|
| .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 $j # doesn't affect CF!
| jnz .Lsub4x
|
| mov @ri[0],0($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]
| pxor %xmm0,%xmm0
| movq @ri[0],%xmm4
| pcmpeqd %xmm5,%xmm5
| pshufd \$0,%xmm4,%xmm4
| mov $num,$j
| pxor %xmm4,%xmm5
| shr \$2,$j # j=num/4
| xor %eax,%eax # i=0
|
| jmp .Lcopy4x
| .align 16
| .Lcopy4x: # conditional copy
| movdqa (%rsp,%rax),%xmm1
| movdqu ($rp,%rax),%xmm2
| pand %xmm4,%xmm1
| pand %xmm5,%xmm2
| movdqa 16(%rsp,%rax),%xmm3
| movdqa %xmm0,(%rsp,%rax)
| por %xmm2,%xmm1
| movdqu 16($rp,%rax),%xmm2
| movdqu %xmm1,($rp,%rax)
| pand %xmm4,%xmm3
| pand %xmm5,%xmm2
| movdqa %xmm0,16(%rsp,%rax)
| por %xmm2,%xmm3
| movdqu %xmm3,16($rp,%rax)
| lea 32(%rax),%rax
| dec $j
| jnz .Lcopy4x
| ___
| }
| $code.=<<___;
| mov 8(%rsp,$num,8),%rsi # restore %rsp
| .cfi_def_cfa %rsi, 8
| mov \$1,%rax
| mov -48(%rsi),%r15
| .cfi_restore %r15
| mov -40(%rsi),%r14
| .cfi_restore %r14
| mov -32(%rsi),%r13
| .cfi_restore %r13
| mov -24(%rsi),%r12
| .cfi_restore %r12
| mov -16(%rsi),%rbp
| .cfi_restore %rbp
| mov -8(%rsi),%rbx
| .cfi_restore %rbx
| lea (%rsi),%rsp
| .cfi_def_cfa_register %rsp
| .Lmul4x_epilogue:
| ret
| .cfi_endproc
| .size bn_mul4x_mont,.-bn_mul4x_mont
| ___
| }}}
| {{{
| ######################################################################
| # void bn_sqr8x_mont(
| my $rptr="%rdi"; # const BN_ULONG *rptr,
| my $aptr="%rsi"; # const BN_ULONG *aptr,
| my $bptr="%rdx"; # not used
| my $nptr="%rcx"; # const BN_ULONG *nptr,
| my $n0 ="%r8"; # const BN_ULONG *n0);
| my $num ="%r9"; # int num, has to be divisible by 8
|
| my ($i,$j,$tptr)=("%rbp","%rcx",$rptr);
| my @A0=("%r10","%r11");
| my @A1=("%r12","%r13");
| my ($a0,$a1,$ai)=("%r14","%r15","%rbx");
|
| $code.=<<___ if ($addx);
| .extern bn_sqrx8x_internal # see x86_64-mont5 module
| ___
| $code.=<<___;
| .extern bn_sqr8x_internal # see x86_64-mont5 module
|
| .type bn_sqr8x_mont,\@function,6
| .align 32
| bn_sqr8x_mont:
| .cfi_startproc
| mov %rsp,%rax
| .cfi_def_cfa_register %rax
| .Lsqr8x_enter:
| push %rbx
| .cfi_push %rbx
| push %rbp
| .cfi_push %rbp
| push %r12
| .cfi_push %r12
| push %r13
| .cfi_push %r13
| push %r14
| .cfi_push %r14
| push %r15
| .cfi_push %r15
| .Lsqr8x_prologue:
|
| mov ${num}d,%r10d
| shl \$3,${num}d # convert $num to bytes
| shl \$3+2,%r10 # 4*$num
| neg $num
|
| ##############################################################
| # ensure that stack frame doesn't alias with $aptr modulo
| # 4096. this is done to allow memory disambiguation logic
| # do its job.
| #
| lea -64(%rsp,$num,2),%r11
| mov %rsp,%rbp
| mov ($n0),$n0 # *n0
| sub $aptr,%r11
| and \$4095,%r11
| cmp %r11,%r10
| jb .Lsqr8x_sp_alt
| sub %r11,%rbp # align with $aptr
| lea -64(%rbp,$num,2),%rbp # future alloca(frame+2*$num)
| jmp .Lsqr8x_sp_done
|
| .align 32
| .Lsqr8x_sp_alt:
| lea 4096-64(,$num,2),%r10 # 4096-frame-2*$num
| lea -64(%rbp,$num,2),%rbp # future alloca(frame+2*$num)
| sub %r10,%r11
| mov \$0,%r10
| cmovc %r10,%r11
| sub %r11,%rbp
| .Lsqr8x_sp_done:
| and \$-64,%rbp
| mov %rsp,%r11
| sub %rbp,%r11
| and \$-4096,%r11
| lea (%rbp,%r11),%rsp
| mov (%rsp),%r10
| cmp %rbp,%rsp
| ja .Lsqr8x_page_walk
| jmp .Lsqr8x_page_walk_done
|
| .align 16
| .Lsqr8x_page_walk:
| lea -4096(%rsp),%rsp
| mov (%rsp),%r10
| cmp %rbp,%rsp
| ja .Lsqr8x_page_walk
| .Lsqr8x_page_walk_done:
|
| mov $num,%r10
| neg $num
|
| mov $n0, 32(%rsp)
| mov %rax, 40(%rsp) # save original %rsp
| .cfi_cfa_expression %rsp+40,deref,+8
| .Lsqr8x_body:
|
| movq $nptr, %xmm2 # save pointer to modulus
| pxor %xmm0,%xmm0
| movq $rptr,%xmm1 # save $rptr
| movq %r10, %xmm3 # -$num
| ___
| $code.=<<___ if ($addx);
| mov OPENSSL_ia32cap_P+8(%rip),%eax
| and \$0x80100,%eax
| cmp \$0x80100,%eax
| jne .Lsqr8x_nox
|
| call bn_sqrx8x_internal # see x86_64-mont5 module
| # %rax top-most carry
| # %rbp nptr
| # %rcx -8*num
| # %r8 end of tp[2*num]
| lea (%r8,%rcx),%rbx
| mov %rcx,$num
| mov %rcx,%rdx
| movq %xmm1,$rptr
| sar \$3+2,%rcx # %cf=0
| jmp .Lsqr8x_sub
|
| .align 32
| .Lsqr8x_nox:
| ___
| $code.=<<___;
| call bn_sqr8x_internal # see x86_64-mont5 module
| # %rax top-most carry
| # %rbp nptr
| # %r8 -8*num
| # %rdi end of tp[2*num]
| lea (%rdi,$num),%rbx
| mov $num,%rcx
| mov $num,%rdx
| movq %xmm1,$rptr
| sar \$3+2,%rcx # %cf=0
| jmp .Lsqr8x_sub
|
| .align 32
| .Lsqr8x_sub:
| mov 8*0(%rbx),%r12
| mov 8*1(%rbx),%r13
| mov 8*2(%rbx),%r14
| mov 8*3(%rbx),%r15
| lea 8*4(%rbx),%rbx
| sbb 8*0(%rbp),%r12
| sbb 8*1(%rbp),%r13
| sbb 8*2(%rbp),%r14
| sbb 8*3(%rbp),%r15
| lea 8*4(%rbp),%rbp
| mov %r12,8*0($rptr)
| mov %r13,8*1($rptr)
| mov %r14,8*2($rptr)
| mov %r15,8*3($rptr)
| lea 8*4($rptr),$rptr
| inc %rcx # preserves %cf
| jnz .Lsqr8x_sub
|
| sbb \$0,%rax # top-most carry
| lea (%rbx,$num),%rbx # rewind
| lea ($rptr,$num),$rptr # rewind
|
| movq %rax,%xmm1
| pxor %xmm0,%xmm0
| pshufd \$0,%xmm1,%xmm1
| mov 40(%rsp),%rsi # restore %rsp
| .cfi_def_cfa %rsi,8
| jmp .Lsqr8x_cond_copy
|
| .align 32
| .Lsqr8x_cond_copy:
| movdqa 16*0(%rbx),%xmm2
| movdqa 16*1(%rbx),%xmm3
| lea 16*2(%rbx),%rbx
| movdqu 16*0($rptr),%xmm4
| movdqu 16*1($rptr),%xmm5
| lea 16*2($rptr),$rptr
| movdqa %xmm0,-16*2(%rbx) # zero tp
| movdqa %xmm0,-16*1(%rbx)
| movdqa %xmm0,-16*2(%rbx,%rdx)
| movdqa %xmm0,-16*1(%rbx,%rdx)
| pcmpeqd %xmm1,%xmm0
| pand %xmm1,%xmm2
| pand %xmm1,%xmm3
| pand %xmm0,%xmm4
| pand %xmm0,%xmm5
| pxor %xmm0,%xmm0
| por %xmm2,%xmm4
| por %xmm3,%xmm5
| movdqu %xmm4,-16*2($rptr)
| movdqu %xmm5,-16*1($rptr)
| add \$32,$num
| jnz .Lsqr8x_cond_copy
|
| mov \$1,%rax
| mov -48(%rsi),%r15
| .cfi_restore %r15
| mov -40(%rsi),%r14
| .cfi_restore %r14
| mov -32(%rsi),%r13
| .cfi_restore %r13
| mov -24(%rsi),%r12
| .cfi_restore %r12
| mov -16(%rsi),%rbp
| .cfi_restore %rbp
| mov -8(%rsi),%rbx
| .cfi_restore %rbx
| lea (%rsi),%rsp
| .cfi_def_cfa_register %rsp
| .Lsqr8x_epilogue:
| ret
| .cfi_endproc
| .size bn_sqr8x_mont,.-bn_sqr8x_mont
| ___
| }}}
|
| if ($addx) {{{
| my $bp="%rdx"; # original value
|
| $code.=<<___;
| .type bn_mulx4x_mont,\@function,6
| .align 32
| bn_mulx4x_mont:
| .cfi_startproc
| mov %rsp,%rax
| .cfi_def_cfa_register %rax
| .Lmulx4x_enter:
| push %rbx
| .cfi_push %rbx
| push %rbp
| .cfi_push %rbp
| push %r12
| .cfi_push %r12
| push %r13
| .cfi_push %r13
| push %r14
| .cfi_push %r14
| push %r15
| .cfi_push %r15
| .Lmulx4x_prologue:
|
| shl \$3,${num}d # convert $num to bytes
| xor %r10,%r10
| sub $num,%r10 # -$num
| mov ($n0),$n0 # *n0
| lea -72(%rsp,%r10),%rbp # future alloca(frame+$num+8)
| and \$-128,%rbp
| mov %rsp,%r11
| sub %rbp,%r11
| and \$-4096,%r11
| lea (%rbp,%r11),%rsp
| mov (%rsp),%r10
| cmp %rbp,%rsp
| ja .Lmulx4x_page_walk
| jmp .Lmulx4x_page_walk_done
|
| .align 16
| .Lmulx4x_page_walk:
| lea -4096(%rsp),%rsp
| mov (%rsp),%r10
| cmp %rbp,%rsp
| ja .Lmulx4x_page_walk
| .Lmulx4x_page_walk_done:
|
| lea ($bp,$num),%r10
| ##############################################################
| # Stack layout
| # +0 num
| # +8 off-loaded &b[i]
| # +16 end of b[num]
| # +24 saved n0
| # +32 saved rp
| # +40 saved %rsp
| # +48 inner counter
| # +56
| # +64 tmp[num+1]
| #
| mov $num,0(%rsp) # save $num
| shr \$5,$num
| mov %r10,16(%rsp) # end of b[num]
| sub \$1,$num
| mov $n0, 24(%rsp) # save *n0
| mov $rp, 32(%rsp) # save $rp
| mov %rax,40(%rsp) # save original %rsp
| .cfi_cfa_expression %rsp+40,deref,+8
| mov $num,48(%rsp) # inner counter
| jmp .Lmulx4x_body
|
| .align 32
| .Lmulx4x_body:
| ___
| my ($aptr, $bptr, $nptr, $tptr, $mi, $bi, $zero, $num)=
| ("%rsi","%rdi","%rcx","%rbx","%r8","%r9","%rbp","%rax");
| my $rptr=$bptr;
| $code.=<<___;
| lea 8($bp),$bptr
| mov ($bp),%rdx # b[0], $bp==%rdx actually
| lea 64+32(%rsp),$tptr
| mov %rdx,$bi
|
| mulx 0*8($aptr),$mi,%rax # a[0]*b[0]
| mulx 1*8($aptr),%r11,%r14 # a[1]*b[0]
| add %rax,%r11
| mov $bptr,8(%rsp) # off-load &b[i]
| mulx 2*8($aptr),%r12,%r13 # ...
| adc %r14,%r12
| adc \$0,%r13
|
| mov $mi,$bptr # borrow $bptr
| imulq 24(%rsp),$mi # "t[0]"*n0
| xor $zero,$zero # cf=0, of=0
|
| mulx 3*8($aptr),%rax,%r14
| mov $mi,%rdx
| lea 4*8($aptr),$aptr
| adcx %rax,%r13
| adcx $zero,%r14 # cf=0
|
| mulx 0*8($nptr),%rax,%r10
| adcx %rax,$bptr # discarded
| adox %r11,%r10
| mulx 1*8($nptr),%rax,%r11
| adcx %rax,%r10
| adox %r12,%r11
| .byte 0xc4,0x62,0xfb,0xf6,0xa1,0x10,0x00,0x00,0x00 # mulx 2*8($nptr),%rax,%r12
| mov 48(%rsp),$bptr # counter value
| mov %r10,-4*8($tptr)
| adcx %rax,%r11
| adox %r13,%r12
| mulx 3*8($nptr),%rax,%r15
| mov $bi,%rdx
| mov %r11,-3*8($tptr)
| adcx %rax,%r12
| adox $zero,%r15 # of=0
| lea 4*8($nptr),$nptr
| mov %r12,-2*8($tptr)
|
| jmp .Lmulx4x_1st
|
| .align 32
| .Lmulx4x_1st:
| adcx $zero,%r15 # cf=0, modulo-scheduled
| mulx 0*8($aptr),%r10,%rax # a[4]*b[0]
| adcx %r14,%r10
| mulx 1*8($aptr),%r11,%r14 # a[5]*b[0]
| adcx %rax,%r11
| mulx 2*8($aptr),%r12,%rax # ...
| adcx %r14,%r12
| mulx 3*8($aptr),%r13,%r14
| .byte 0x67,0x67
| mov $mi,%rdx
| adcx %rax,%r13
| adcx $zero,%r14 # cf=0
| lea 4*8($aptr),$aptr
| lea 4*8($tptr),$tptr
|
| adox %r15,%r10
| mulx 0*8($nptr),%rax,%r15
| adcx %rax,%r10
| adox %r15,%r11
| mulx 1*8($nptr),%rax,%r15
| adcx %rax,%r11
| adox %r15,%r12
| mulx 2*8($nptr),%rax,%r15
| mov %r10,-5*8($tptr)
| adcx %rax,%r12
| mov %r11,-4*8($tptr)
| adox %r15,%r13
| mulx 3*8($nptr),%rax,%r15
| mov $bi,%rdx
| mov %r12,-3*8($tptr)
| adcx %rax,%r13
| adox $zero,%r15
| lea 4*8($nptr),$nptr
| mov %r13,-2*8($tptr)
|
| dec $bptr # of=0, pass cf
| jnz .Lmulx4x_1st
|
| mov 0(%rsp),$num # load num
| mov 8(%rsp),$bptr # re-load &b[i]
| adc $zero,%r15 # modulo-scheduled
| add %r15,%r14
| sbb %r15,%r15 # top-most carry
| mov %r14,-1*8($tptr)
| jmp .Lmulx4x_outer
|
| .align 32
| .Lmulx4x_outer:
| mov ($bptr),%rdx # b[i]
| lea 8($bptr),$bptr # b++
| sub $num,$aptr # rewind $aptr
| mov %r15,($tptr) # save top-most carry
| lea 64+4*8(%rsp),$tptr
| sub $num,$nptr # rewind $nptr
|
| mulx 0*8($aptr),$mi,%r11 # a[0]*b[i]
| xor %ebp,%ebp # xor $zero,$zero # cf=0, of=0
| mov %rdx,$bi
| mulx 1*8($aptr),%r14,%r12 # a[1]*b[i]
| adox -4*8($tptr),$mi
| adcx %r14,%r11
| mulx 2*8($aptr),%r15,%r13 # ...
| adox -3*8($tptr),%r11
| adcx %r15,%r12
| adox -2*8($tptr),%r12
| adcx $zero,%r13
| adox $zero,%r13
|
| mov $bptr,8(%rsp) # off-load &b[i]
| mov $mi,%r15
| imulq 24(%rsp),$mi # "t[0]"*n0
| xor %ebp,%ebp # xor $zero,$zero # cf=0, of=0
|
| mulx 3*8($aptr),%rax,%r14
| mov $mi,%rdx
| adcx %rax,%r13
| adox -1*8($tptr),%r13
| adcx $zero,%r14
| lea 4*8($aptr),$aptr
| adox $zero,%r14
|
| mulx 0*8($nptr),%rax,%r10
| adcx %rax,%r15 # discarded
| adox %r11,%r10
| mulx 1*8($nptr),%rax,%r11
| adcx %rax,%r10
| adox %r12,%r11
| mulx 2*8($nptr),%rax,%r12
| mov %r10,-4*8($tptr)
| adcx %rax,%r11
| adox %r13,%r12
| mulx 3*8($nptr),%rax,%r15
| mov $bi,%rdx
| mov %r11,-3*8($tptr)
| lea 4*8($nptr),$nptr
| adcx %rax,%r12
| adox $zero,%r15 # of=0
| mov 48(%rsp),$bptr # counter value
| mov %r12,-2*8($tptr)
|
| jmp .Lmulx4x_inner
|
| .align 32
| .Lmulx4x_inner:
| mulx 0*8($aptr),%r10,%rax # a[4]*b[i]
| adcx $zero,%r15 # cf=0, modulo-scheduled
| adox %r14,%r10
| mulx 1*8($aptr),%r11,%r14 # a[5]*b[i]
| adcx 0*8($tptr),%r10
| adox %rax,%r11
| mulx 2*8($aptr),%r12,%rax # ...
| adcx 1*8($tptr),%r11
| adox %r14,%r12
| mulx 3*8($aptr),%r13,%r14
| mov $mi,%rdx
| adcx 2*8($tptr),%r12
| adox %rax,%r13
| adcx 3*8($tptr),%r13
| adox $zero,%r14 # of=0
| lea 4*8($aptr),$aptr
| lea 4*8($tptr),$tptr
| adcx $zero,%r14 # cf=0
|
| adox %r15,%r10
| mulx 0*8($nptr),%rax,%r15
| adcx %rax,%r10
| adox %r15,%r11
| mulx 1*8($nptr),%rax,%r15
| adcx %rax,%r11
| adox %r15,%r12
| mulx 2*8($nptr),%rax,%r15
| mov %r10,-5*8($tptr)
| adcx %rax,%r12
| adox %r15,%r13
| mulx 3*8($nptr),%rax,%r15
| mov $bi,%rdx
| mov %r11,-4*8($tptr)
| mov %r12,-3*8($tptr)
| adcx %rax,%r13
| adox $zero,%r15
| lea 4*8($nptr),$nptr
| mov %r13,-2*8($tptr)
|
| dec $bptr # of=0, pass cf
| jnz .Lmulx4x_inner
|
| mov 0(%rsp),$num # load num
| mov 8(%rsp),$bptr # re-load &b[i]
| adc $zero,%r15 # modulo-scheduled
| sub 0*8($tptr),$zero # pull top-most carry
| adc %r15,%r14
| sbb %r15,%r15 # top-most carry
| mov %r14,-1*8($tptr)
|
| cmp 16(%rsp),$bptr
| jne .Lmulx4x_outer
|
| lea 64(%rsp),$tptr
| sub $num,$nptr # rewind $nptr
| neg %r15
| mov $num,%rdx
| shr \$3+2,$num # %cf=0
| mov 32(%rsp),$rptr # restore rp
| jmp .Lmulx4x_sub
|
| .align 32
| .Lmulx4x_sub:
| mov 8*0($tptr),%r11
| mov 8*1($tptr),%r12
| mov 8*2($tptr),%r13
| mov 8*3($tptr),%r14
| lea 8*4($tptr),$tptr
| sbb 8*0($nptr),%r11
| sbb 8*1($nptr),%r12
| sbb 8*2($nptr),%r13
| sbb 8*3($nptr),%r14
| lea 8*4($nptr),$nptr
| mov %r11,8*0($rptr)
| mov %r12,8*1($rptr)
| mov %r13,8*2($rptr)
| mov %r14,8*3($rptr)
| lea 8*4($rptr),$rptr
| dec $num # preserves %cf
| jnz .Lmulx4x_sub
|
| sbb \$0,%r15 # top-most carry
| lea 64(%rsp),$tptr
| sub %rdx,$rptr # rewind
|
| movq %r15,%xmm1
| pxor %xmm0,%xmm0
| pshufd \$0,%xmm1,%xmm1
| mov 40(%rsp),%rsi # restore %rsp
| .cfi_def_cfa %rsi,8
| jmp .Lmulx4x_cond_copy
|
| .align 32
| .Lmulx4x_cond_copy:
| movdqa 16*0($tptr),%xmm2
| movdqa 16*1($tptr),%xmm3
| lea 16*2($tptr),$tptr
| movdqu 16*0($rptr),%xmm4
| movdqu 16*1($rptr),%xmm5
| lea 16*2($rptr),$rptr
| movdqa %xmm0,-16*2($tptr) # zero tp
| movdqa %xmm0,-16*1($tptr)
| pcmpeqd %xmm1,%xmm0
| pand %xmm1,%xmm2
| pand %xmm1,%xmm3
| pand %xmm0,%xmm4
| pand %xmm0,%xmm5
| pxor %xmm0,%xmm0
| por %xmm2,%xmm4
| por %xmm3,%xmm5
| movdqu %xmm4,-16*2($rptr)
| movdqu %xmm5,-16*1($rptr)
| sub \$32,%rdx
| jnz .Lmulx4x_cond_copy
|
| mov %rdx,($tptr)
|
| mov \$1,%rax
| mov -48(%rsi),%r15
| .cfi_restore %r15
| mov -40(%rsi),%r14
| .cfi_restore %r14
| mov -32(%rsi),%r13
| .cfi_restore %r13
| mov -24(%rsi),%r12
| .cfi_restore %r12
| mov -16(%rsi),%rbp
| .cfi_restore %rbp
| mov -8(%rsi),%rbx
| .cfi_restore %rbx
| lea (%rsi),%rsp
| .cfi_def_cfa_register %rsp
| .Lmulx4x_epilogue:
| ret
| .cfi_endproc
| .size bn_mulx4x_mont,.-bn_mulx4x_mont
| ___
| }}}
| $code.=<<___;
| .asciz "Montgomery Multiplication for x86_64, CRYPTOGAMS by <appro\@openssl.org>"
| .align 16
| ___
|
| # EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame,
| # CONTEXT *context,DISPATCHER_CONTEXT *disp)
| if ($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($disp),%r11 # disp->HandlerData
|
| mov 0(%r11),%r10d # HandlerData[0]
| lea (%rsi,%r10),%r10 # end of prologue label
| cmp %r10,%rbx # context->Rip<end of prologue label
| jb .Lcommon_seh_tail
|
| mov 152($context),%rax # pull context->Rsp
|
| mov 4(%r11),%r10d # HandlerData[1]
| lea (%rsi,%r10),%r10 # epilogue label
| cmp %r10,%rbx # context->Rip>=epilogue label
| jae .Lcommon_seh_tail
|
| mov 192($context),%r10 # pull $num
| mov 8(%rax,%r10,8),%rax # pull saved stack pointer
|
| jmp .Lcommon_pop_regs
| .size mul_handler,.-mul_handler
|
| .type sqr_handler,\@abi-omnipotent
| .align 16
| sqr_handler:
| push %rsi
| push %rdi
| push %rbx
| push %rbp
| push %r12
| push %r13
| push %r14
| push %r15
| pushfq
| sub \$64,%rsp
|
| mov 120($context),%rax # pull context->Rax
| mov 248($context),%rbx # pull context->Rip
|
| mov 8($disp),%rsi # disp->ImageBase
| mov 56($disp),%r11 # disp->HandlerData
|
| mov 0(%r11),%r10d # HandlerData[0]
| lea (%rsi,%r10),%r10 # end of prologue label
| cmp %r10,%rbx # context->Rip<.Lsqr_prologue
| jb .Lcommon_seh_tail
|
| mov 4(%r11),%r10d # HandlerData[1]
| lea (%rsi,%r10),%r10 # body label
| cmp %r10,%rbx # context->Rip<.Lsqr_body
| jb .Lcommon_pop_regs
|
| mov 152($context),%rax # pull context->Rsp
|
| mov 8(%r11),%r10d # HandlerData[2]
| lea (%rsi,%r10),%r10 # epilogue label
| cmp %r10,%rbx # context->Rip>=.Lsqr_epilogue
| jae .Lcommon_seh_tail
|
| mov 40(%rax),%rax # pull saved stack pointer
|
| .Lcommon_pop_regs:
| 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
|
| .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 sqr_handler,.-sqr_handler
|
| .section .pdata
| .align 4
| .rva .LSEH_begin_bn_mul_mont
| .rva .LSEH_end_bn_mul_mont
| .rva .LSEH_info_bn_mul_mont
|
| .rva .LSEH_begin_bn_mul4x_mont
| .rva .LSEH_end_bn_mul4x_mont
| .rva .LSEH_info_bn_mul4x_mont
|
| .rva .LSEH_begin_bn_sqr8x_mont
| .rva .LSEH_end_bn_sqr8x_mont
| .rva .LSEH_info_bn_sqr8x_mont
| ___
| $code.=<<___ if ($addx);
| .rva .LSEH_begin_bn_mulx4x_mont
| .rva .LSEH_end_bn_mulx4x_mont
| .rva .LSEH_info_bn_mulx4x_mont
| ___
| $code.=<<___;
| .section .xdata
| .align 8
| .LSEH_info_bn_mul_mont:
| .byte 9,0,0,0
| .rva mul_handler
| .rva .Lmul_body,.Lmul_epilogue # HandlerData[]
| .LSEH_info_bn_mul4x_mont:
| .byte 9,0,0,0
| .rva mul_handler
| .rva .Lmul4x_body,.Lmul4x_epilogue # HandlerData[]
| .LSEH_info_bn_sqr8x_mont:
| .byte 9,0,0,0
| .rva sqr_handler
| .rva .Lsqr8x_prologue,.Lsqr8x_body,.Lsqr8x_epilogue # HandlerData[]
| .align 8
| ___
| $code.=<<___ if ($addx);
| .LSEH_info_bn_mulx4x_mont:
| .byte 9,0,0,0
| .rva sqr_handler
| .rva .Lmulx4x_prologue,.Lmulx4x_body,.Lmulx4x_epilogue # HandlerData[]
| .align 8
| ___
| }
|
| print $code;
| close STDOUT or die "error closing STDOUT: $!";
|
|
