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| #! /usr/bin/env perl
| # Copyright 2011-2020 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/.
| # ====================================================================
| #
| # May 2011
| #
| # The module implements bn_GF2m_mul_2x2 polynomial multiplication used
| # in bn_gf2m.c. It's kind of low-hanging mechanical port from C for
| # the time being... Except that it has two code paths: code suitable
| # for any x86_64 CPU and PCLMULQDQ one suitable for Westmere and
| # later. Improvement varies from one benchmark and µ-arch to another.
| # Vanilla code path is at most 20% faster than compiler-generated code
| # [not very impressive], while PCLMULQDQ - whole 85%-160% better on
| # 163- and 571-bit ECDH benchmarks on Intel CPUs. Keep in mind that
| # these coefficients are not ones for bn_GF2m_mul_2x2 itself, as not
| # all CPU time is burnt in it...
|
| $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;
|
| ($lo,$hi)=("%rax","%rdx"); $a=$lo;
| ($i0,$i1)=("%rsi","%rdi");
| ($t0,$t1)=("%rbx","%rcx");
| ($b,$mask)=("%rbp","%r8");
| ($a1,$a2,$a4,$a8,$a12,$a48)=map("%r$_",(9..15));
| ($R,$Tx)=("%xmm0","%xmm1");
|
| $code.=<<___;
| .text
|
| .type _mul_1x1,\@abi-omnipotent
| .align 16
| _mul_1x1:
| .cfi_startproc
| sub \$128+8,%rsp
| .cfi_adjust_cfa_offset 128+8
| mov \$-1,$a1
| lea ($a,$a),$i0
| shr \$3,$a1
| lea (,$a,4),$i1
| and $a,$a1 # a1=a&0x1fffffffffffffff
| lea (,$a,8),$a8
| sar \$63,$a # broadcast 63rd bit
| lea ($a1,$a1),$a2
| sar \$63,$i0 # broadcast 62nd bit
| lea (,$a1,4),$a4
| and $b,$a
| sar \$63,$i1 # broadcast 61st bit
| mov $a,$hi # $a is $lo
| shl \$63,$lo
| and $b,$i0
| shr \$1,$hi
| mov $i0,$t1
| shl \$62,$i0
| and $b,$i1
| shr \$2,$t1
| xor $i0,$lo
| mov $i1,$t0
| shl \$61,$i1
| xor $t1,$hi
| shr \$3,$t0
| xor $i1,$lo
| xor $t0,$hi
|
| mov $a1,$a12
| movq \$0,0(%rsp) # tab[0]=0
| xor $a2,$a12 # a1^a2
| mov $a1,8(%rsp) # tab[1]=a1
| mov $a4,$a48
| mov $a2,16(%rsp) # tab[2]=a2
| xor $a8,$a48 # a4^a8
| mov $a12,24(%rsp) # tab[3]=a1^a2
|
| xor $a4,$a1
| mov $a4,32(%rsp) # tab[4]=a4
| xor $a4,$a2
| mov $a1,40(%rsp) # tab[5]=a1^a4
| xor $a4,$a12
| mov $a2,48(%rsp) # tab[6]=a2^a4
| xor $a48,$a1 # a1^a4^a4^a8=a1^a8
| mov $a12,56(%rsp) # tab[7]=a1^a2^a4
| xor $a48,$a2 # a2^a4^a4^a8=a1^a8
|
| mov $a8,64(%rsp) # tab[8]=a8
| xor $a48,$a12 # a1^a2^a4^a4^a8=a1^a2^a8
| mov $a1,72(%rsp) # tab[9]=a1^a8
| xor $a4,$a1 # a1^a8^a4
| mov $a2,80(%rsp) # tab[10]=a2^a8
| xor $a4,$a2 # a2^a8^a4
| mov $a12,88(%rsp) # tab[11]=a1^a2^a8
|
| xor $a4,$a12 # a1^a2^a8^a4
| mov $a48,96(%rsp) # tab[12]=a4^a8
| mov $mask,$i0
| mov $a1,104(%rsp) # tab[13]=a1^a4^a8
| and $b,$i0
| mov $a2,112(%rsp) # tab[14]=a2^a4^a8
| shr \$4,$b
| mov $a12,120(%rsp) # tab[15]=a1^a2^a4^a8
| mov $mask,$i1
| and $b,$i1
| shr \$4,$b
|
| movq (%rsp,$i0,8),$R # half of calculations is done in SSE2
| mov $mask,$i0
| and $b,$i0
| shr \$4,$b
| ___
| for ($n=1;$n<8;$n++) {
| $code.=<<___;
| mov (%rsp,$i1,8),$t1
| mov $mask,$i1
| mov $t1,$t0
| shl \$`8*$n-4`,$t1
| and $b,$i1
| movq (%rsp,$i0,8),$Tx
| shr \$`64-(8*$n-4)`,$t0
| xor $t1,$lo
| pslldq \$$n,$Tx
| mov $mask,$i0
| shr \$4,$b
| xor $t0,$hi
| and $b,$i0
| shr \$4,$b
| pxor $Tx,$R
| ___
| }
| $code.=<<___;
| mov (%rsp,$i1,8),$t1
| mov $t1,$t0
| shl \$`8*$n-4`,$t1
| movq $R,$i0
| shr \$`64-(8*$n-4)`,$t0
| xor $t1,$lo
| psrldq \$8,$R
| xor $t0,$hi
| movq $R,$i1
| xor $i0,$lo
| xor $i1,$hi
|
| add \$128+8,%rsp
| .cfi_adjust_cfa_offset -128-8
| ret
| .Lend_mul_1x1:
| .cfi_endproc
| .size _mul_1x1,.-_mul_1x1
| ___
|
| ($rp,$a1,$a0,$b1,$b0) = $win64? ("%rcx","%rdx","%r8", "%r9","%r10") : # Win64 order
| ("%rdi","%rsi","%rdx","%rcx","%r8"); # Unix order
|
| $code.=<<___;
| .extern OPENSSL_ia32cap_P
| .globl bn_GF2m_mul_2x2
| .type bn_GF2m_mul_2x2,\@abi-omnipotent
| .align 16
| bn_GF2m_mul_2x2:
| .cfi_startproc
| mov %rsp,%rax
| mov OPENSSL_ia32cap_P(%rip),%r10
| bt \$33,%r10
| jnc .Lvanilla_mul_2x2
|
| movq $a1,%xmm0
| movq $b1,%xmm1
| movq $a0,%xmm2
| ___
| $code.=<<___ if ($win64);
| movq 40(%rsp),%xmm3
| ___
| $code.=<<___ if (!$win64);
| movq $b0,%xmm3
| ___
| $code.=<<___;
| movdqa %xmm0,%xmm4
| movdqa %xmm1,%xmm5
| pclmulqdq \$0,%xmm1,%xmm0 # a1·b1
| pxor %xmm2,%xmm4
| pxor %xmm3,%xmm5
| pclmulqdq \$0,%xmm3,%xmm2 # a0·b0
| pclmulqdq \$0,%xmm5,%xmm4 # (a0+a1)·(b0+b1)
| xorps %xmm0,%xmm4
| xorps %xmm2,%xmm4 # (a0+a1)·(b0+b1)-a0·b0-a1·b1
| movdqa %xmm4,%xmm5
| pslldq \$8,%xmm4
| psrldq \$8,%xmm5
| pxor %xmm4,%xmm2
| pxor %xmm5,%xmm0
| movdqu %xmm2,0($rp)
| movdqu %xmm0,16($rp)
| ret
|
| .align 16
| .Lvanilla_mul_2x2:
| lea -8*17(%rsp),%rsp
| .cfi_adjust_cfa_offset 8*17
| ___
| $code.=<<___ if ($win64);
| mov `8*17+40`(%rsp),$b0
| mov %rdi,8*15(%rsp)
| mov %rsi,8*16(%rsp)
| ___
| $code.=<<___;
| mov %r14,8*10(%rsp)
| .cfi_rel_offset %r14,8*10
| mov %r13,8*11(%rsp)
| .cfi_rel_offset %r13,8*11
| mov %r12,8*12(%rsp)
| .cfi_rel_offset %r12,8*12
| mov %rbp,8*13(%rsp)
| .cfi_rel_offset %rbp,8*13
| mov %rbx,8*14(%rsp)
| .cfi_rel_offset %rbx,8*14
| .Lbody_mul_2x2:
| mov $rp,32(%rsp) # save the arguments
| mov $a1,40(%rsp)
| mov $a0,48(%rsp)
| mov $b1,56(%rsp)
| mov $b0,64(%rsp)
|
| mov \$0xf,$mask
| mov $a1,$a
| mov $b1,$b
| call _mul_1x1 # a1·b1
| mov $lo,16(%rsp)
| mov $hi,24(%rsp)
|
| mov 48(%rsp),$a
| mov 64(%rsp),$b
| call _mul_1x1 # a0·b0
| mov $lo,0(%rsp)
| mov $hi,8(%rsp)
|
| mov 40(%rsp),$a
| mov 56(%rsp),$b
| xor 48(%rsp),$a
| xor 64(%rsp),$b
| call _mul_1x1 # (a0+a1)·(b0+b1)
| ___
| @r=("%rbx","%rcx","%rdi","%rsi");
| $code.=<<___;
| mov 0(%rsp),@r[0]
| mov 8(%rsp),@r[1]
| mov 16(%rsp),@r[2]
| mov 24(%rsp),@r[3]
| mov 32(%rsp),%rbp
|
| xor $hi,$lo
| xor @r[1],$hi
| xor @r[0],$lo
| mov @r[0],0(%rbp)
| xor @r[2],$hi
| mov @r[3],24(%rbp)
| xor @r[3],$lo
| xor @r[3],$hi
| xor $hi,$lo
| mov $hi,16(%rbp)
| mov $lo,8(%rbp)
|
| mov 8*10(%rsp),%r14
| .cfi_restore %r14
| mov 8*11(%rsp),%r13
| .cfi_restore %r13
| mov 8*12(%rsp),%r12
| .cfi_restore %r12
| mov 8*13(%rsp),%rbp
| .cfi_restore %rbp
| mov 8*14(%rsp),%rbx
| .cfi_restore %rbx
| ___
| $code.=<<___ if ($win64);
| mov 8*15(%rsp),%rdi
| mov 8*16(%rsp),%rsi
| ___
| $code.=<<___;
| lea 8*17(%rsp),%rsp
| .cfi_adjust_cfa_offset -8*17
| .Lepilogue_mul_2x2:
| ret
| .Lend_mul_2x2:
| .cfi_endproc
| .size bn_GF2m_mul_2x2,.-bn_GF2m_mul_2x2
| .asciz "GF(2^m) Multiplication for x86_64, CRYPTOGAMS by <appro\@openssl.org>"
| .align 16
| ___
|
| # EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame,
| # CONTEXT *context,DISPATCHER_CONTEXT *disp)
| if ($win64) {
| $rec="%rcx";
| $frame="%rdx";
| $context="%r8";
| $disp="%r9";
|
| $code.=<<___;
| .extern __imp_RtlVirtualUnwind
|
| .type se_handler,\@abi-omnipotent
| .align 16
| se_handler:
| push %rsi
| push %rdi
| push %rbx
| push %rbp
| push %r12
| push %r13
| push %r14
| push %r15
| pushfq
| sub \$64,%rsp
|
| mov 120($context),%rax # pull context->Rax
| mov 248($context),%rbx # pull context->Rip
|
| lea .Lbody_mul_2x2(%rip),%r10
| cmp %r10,%rbx # context->Rip<"prologue" label
| jb .Lin_prologue
|
| mov 152($context),%rax # pull context->Rsp
|
| lea .Lepilogue_mul_2x2(%rip),%r10
| cmp %r10,%rbx # context->Rip>="epilogue" label
| jae .Lin_prologue
|
| mov 8*10(%rax),%r14 # mimic epilogue
| mov 8*11(%rax),%r13
| mov 8*12(%rax),%r12
| mov 8*13(%rax),%rbp
| mov 8*14(%rax),%rbx
| mov 8*15(%rax),%rdi
| mov 8*16(%rax),%rsi
|
| mov %rbx,144($context) # restore context->Rbx
| mov %rbp,160($context) # restore context->Rbp
| mov %rsi,168($context) # restore context->Rsi
| mov %rdi,176($context) # restore context->Rdi
| mov %r12,216($context) # restore context->R12
| mov %r13,224($context) # restore context->R13
| mov %r14,232($context) # restore context->R14
|
| lea 8*17(%rax),%rax
|
| .Lin_prologue:
| mov %rax,152($context) # restore context->Rsp
|
| 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 se_handler,.-se_handler
|
| .section .pdata
| .align 4
| .rva _mul_1x1
| .rva .Lend_mul_1x1
| .rva .LSEH_info_1x1
|
| .rva .Lvanilla_mul_2x2
| .rva .Lend_mul_2x2
| .rva .LSEH_info_2x2
| .section .xdata
| .align 8
| .LSEH_info_1x1:
| .byte 0x01,0x07,0x02,0x00
| .byte 0x07,0x01,0x11,0x00 # sub rsp,128+8
| .LSEH_info_2x2:
| .byte 9,0,0,0
| .rva se_handler
| ___
| }
|
| $code =~ s/\`([^\`]*)\`/eval($1)/gem;
| print $code;
| close STDOUT or die "error closing STDOUT: $!";
|
|