From 529c33f1e8416f1dd8752a31766eef81a2f1305b Mon Sep 17 00:00:00 2001 From: Andy Polyakov Date: Tue, 24 Jul 2007 15:42:13 +0000 Subject: [PATCH] Throw in bn_mul_mont for x86_64. --- Configure | 2 +- TABLE | 8 +- crypto/bn/asm/x86_64-mont.pl | 213 +++++++++++++++++++++++++++++++++++ 3 files changed, 218 insertions(+), 5 deletions(-) create mode 100755 crypto/bn/asm/x86_64-mont.pl diff --git a/Configure b/Configure index a1da13a2b7..5e4a0f069c 100755 --- a/Configure +++ b/Configure @@ -120,7 +120,7 @@ my $x86_elf_asm="x86cpuid-elf.o:bn86-elf.o co86-elf.o mo86-elf.o:dx86-elf.o yx86 my $x86_coff_asm="x86cpuid-cof.o:bn86-cof.o co86-cof.o mo86-cof.o:dx86-cof.o yx86-cof.o:ax86-cof.o:bx86-cof.o:mx86-cof.o:sx86-cof.o s512sse2-cof.o:cx86-cof.o:rx86-cof.o:rm86-cof.o:r586-cof.o"; my $x86_out_asm="x86cpuid-out.o:bn86-out.o co86-out.o mo86-out.o:dx86-out.o yx86-out.o:ax86-out.o:bx86-out.o:mx86-out.o:sx86-out.o s512sse2-out.o:cx86-out.o:rx86-out.o:rm86-out.o:r586-out.o"; -my $x86_64_asm="x86_64cpuid.o:x86_64-gcc.o::aes-x86_64.o::md5-x86_64.o:sha1-x86_64.o sha256-x86_64.o sha512-x86_64.o::rc4-x86_64.o::"; +my $x86_64_asm="x86_64cpuid.o:x86_64-gcc.o x86_64-mont.o::aes-x86_64.o::md5-x86_64.o:sha1-x86_64.o sha256-x86_64.o sha512-x86_64.o::rc4-x86_64.o::"; my $ia64_asm=":bn-ia64.o::aes_core.o aes_cbc.o aes-ia64.o:::sha1-ia64.o sha256-ia64.o sha512-ia64.o::rc4-ia64.o::"; my $s390x_asm=":bn-s390x.o::aes_cbc.o aes-s390x.o:::sha1-s390x.o sha256-s390x.o sha512-s390x.o::::"; diff --git a/TABLE b/TABLE index 335cefd754..9e74aab9bf 100644 --- a/TABLE +++ b/TABLE @@ -252,7 +252,7 @@ $sys_id = $lflags = $bn_ops = SIXTY_FOUR_BIT_LONG RC4_CHUNK DES_INT DES_UNROLL $cpuid_obj = x86_64cpuid.o -$bn_obj = x86_64-gcc.o +$bn_obj = x86_64-gcc.o x86_64-mont.o $des_obj = $aes_obj = aes-x86_64.o $bf_obj = @@ -2925,7 +2925,7 @@ $sys_id = $lflags = -ldl $bn_ops = SIXTY_FOUR_BIT_LONG RC4_CHUNK BF_PTR2 DES_INT DES_UNROLL $cpuid_obj = x86_64cpuid.o -$bn_obj = x86_64-gcc.o +$bn_obj = x86_64-gcc.o x86_64-mont.o $des_obj = $aes_obj = aes-x86_64.o $bf_obj = @@ -3708,7 +3708,7 @@ $sys_id = $lflags = -lsocket -lnsl -ldl $bn_ops = SIXTY_FOUR_BIT_LONG RC4_CHUNK BF_PTR2 DES_INT DES_UNROLL $cpuid_obj = x86_64cpuid.o -$bn_obj = x86_64-gcc.o +$bn_obj = x86_64-gcc.o x86_64-mont.o $des_obj = $aes_obj = aes-x86_64.o $bf_obj = @@ -3735,7 +3735,7 @@ $sys_id = $lflags = -lsocket -lnsl -ldl $bn_ops = SIXTY_FOUR_BIT_LONG RC4_CHUNK BF_PTR2 DES_INT DES_UNROLL $cpuid_obj = x86_64cpuid.o -$bn_obj = x86_64-gcc.o +$bn_obj = x86_64-gcc.o x86_64-mont.o $des_obj = $aes_obj = aes-x86_64.o $bf_obj = diff --git a/crypto/bn/asm/x86_64-mont.pl b/crypto/bn/asm/x86_64-mont.pl new file mode 100755 index 0000000000..6b33c7e9ea --- /dev/null +++ b/crypto/bn/asm/x86_64-mont.pl @@ -0,0 +1,213 @@ +#!/usr/bin/env perl + +# ==================================================================== +# Written by Andy Polyakov for the OpenSSL +# project. The module is, however, dual licensed under OpenSSL and +# CRYPTOGAMS licenses depending on where you obtain it. For further +# details see http://www.openssl.org/~appro/cryptogams/. +# ==================================================================== + +# October 2005. +# +# Montgomery multiplication routine for x86_64. While it gives modest +# 9% improvement of rsa4096 sign on Opteron, rsa512 sign runs more +# than twice, >2x, as fast. Most common rsa1024 sign is improved by +# respectful 50%. It remains to be seen if loop unrolling and +# dedicated squaring routine can provide further improvement... + +$output=shift; + +$0 =~ m/(.*[\/\\])[^\/\\]+$/; $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 STDOUT,"| $^X $xlate $output"; + +# int bn_mul_mont( +$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"; +$hi0="%r11"; +$bp="%r12"; # reassign $bp +$hi1="%r13"; +$i="%r14"; +$j="%r15"; +$m0="%rbx"; +$m1="%rbp"; + +$code=<<___; +.text + +.globl bn_mul_mont +.type bn_mul_mont,\@function,6 +.align 16 +bn_mul_mont: + push %rbx + push %rbp + push %r12 + push %r13 + push %r14 + push %r15 + + lea 2($num),%rax + mov %rsp,%rbp + neg %rax + lea (%rsp,%rax,8),%rsp # tp=alloca(8*(num+2)) + and \$-1024,%rsp # minimize TLB usage + + mov %rbp,8(%rsp,$num,8) # tp[num+1]=%rsp + mov %rdx,$bp # $bp reassigned, remember? + + mov ($n0),$n0 # pull n0[0] value + + xor $i,$i # i=0 + xor $j,$j # j=0 + + mov ($bp),$m0 # m0=bp[0] + mov ($ap),%rax + mulq $m0 # ap[0]*bp[0] + mov %rax,$lo0 + mov %rdx,$hi0 + + imulq $n0,%rax # "tp[0]"*n0 + mov %rax,$m1 + + mulq ($np) # np[0]*m1 + add $lo0,%rax # discarded + adc \$0,%rdx + mov %rdx,$hi1 + + lea 1($j),$j # j++ +.L1st: + mov ($ap,$j,8),%rax + mulq $m0 # ap[j]*bp[0] + add $hi0,%rax + adc \$0,%rdx + mov %rax,$lo0 + mov ($np,$j,8),%rax + mov %rdx,$hi0 + + mulq $m1 # np[j]*m1 + add $hi1,%rax + lea 1($j),$j # j++ + adc \$0,%rdx + add $lo0,%rax # np[j]*m1+ap[j]*bp[0] + adc \$0,%rdx + mov %rax,-16(%rsp,$j,8) # tp[j-1] + cmp $num,$j + mov %rdx,$hi1 + jl .L1st + + 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++ +.align 4 +.Louter: + xor $j,$j # j=0 + + mov ($bp,$i,8),$m0 # m0=bp[i] + mov ($ap),%rax # ap[0] + mulq $m0 # ap[0]*bp[i] + add (%rsp),%rax # ap[0]*bp[i]+tp[0] + adc \$0,%rdx + mov %rax,$lo0 + mov %rdx,$hi0 + + imulq $n0,%rax # tp[0]*n0 + mov %rax,$m1 + + mulq ($np,$j,8) # np[0]*m1 + add $lo0,%rax # discarded + mov 8(%rsp),$lo0 # tp[1] + adc \$0,%rdx + mov %rdx,$hi1 + + lea 1($j),$j # j++ +.align 4 +.Linner: + mov ($ap,$j,8),%rax + mulq $m0 # ap[j]*bp[i] + add $hi0,%rax + adc \$0,%rdx + add %rax,$lo0 # ap[j]*bp[i]+tp[j] + mov ($np,$j,8),%rax + adc \$0,%rdx + mov %rdx,$hi0 + + mulq $m1 # np[j]*m1 + add $hi1,%rax + lea 1($j),$j # j++ + adc \$0,%rdx + add $lo0,%rax # np[j]*m1+ap[j]*bp[i]+tp[j] + adc \$0,%rdx + mov (%rsp,$j,8),$lo0 + cmp $num,$j + mov %rax,-16(%rsp,$j,8) # tp[j-1] + mov %rdx,$hi1 + jl .Linner + + 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 + + lea (%rsp),$ap # borrow ap for tp + lea -1($num),$j # j=num-1 + + mov ($ap),%rax # tp[0] + xor $i,$i # i=0 and clear CF! + jmp .Lsub +.align 16 +.Lsub: sbb ($np,$i,8),%rax + mov %rax,($rp,$i,8) # rp[i]=tp[i]-np[i] + dec $j # doesn't affect CF! + mov 8($ap,$i,8),%rax # tp[i+1] + lea 1($i),$i # i++ + jge .Lsub + + sbb \$0,%rax # handle upmost overflow bit + and %rax,$ap + not %rax + mov $rp,$np + and %rax,$np + lea -1($num),$j + or $np,$ap # ap=borrow?tp:rp +.align 16 +.Lcopy: # copy or in-place refresh + mov ($ap,$j,8),%rax + mov %rax,($rp,$j,8) # rp[i]=tp[i] + mov $i,(%rsp,$j,8) # zap temporary vector + dec $j + jge .Lcopy + + mov 8(%rsp,$num,8),%rsp # restore %rsp + mov \$1,%rax + pop %r15 + pop %r14 + pop %r13 + pop %r12 + pop %rbp + pop %rbx + ret +.size bn_mul_mont,.-bn_mul_mont +.asciz "Montgomery Multiplication for x86_64, CRYPTOGAMS by " +___ + +print $code; +close STDOUT; -- 2.25.1