diff options
Diffstat (limited to 'openssl/crypto/rc4/asm/rc4-x86_64.pl')
| -rwxr-xr-x | openssl/crypto/rc4/asm/rc4-x86_64.pl | 504 |
1 files changed, 0 insertions, 504 deletions
diff --git a/openssl/crypto/rc4/asm/rc4-x86_64.pl b/openssl/crypto/rc4/asm/rc4-x86_64.pl deleted file mode 100755 index 677be5fe..00000000 --- a/openssl/crypto/rc4/asm/rc4-x86_64.pl +++ /dev/null @@ -1,504 +0,0 @@ -#!/usr/bin/env perl -# -# ==================================================================== -# 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/. -# ==================================================================== -# -# 2.22x RC4 tune-up:-) It should be noted though that my hand [as in -# "hand-coded assembler"] doesn't stand for the whole improvement -# coefficient. It turned out that eliminating RC4_CHAR from config -# line results in ~40% improvement (yes, even for C implementation). -# Presumably it has everything to do with AMD cache architecture and -# RAW or whatever penalties. Once again! The module *requires* config -# line *without* RC4_CHAR! As for coding "secret," I bet on partial -# register arithmetics. For example instead of 'inc %r8; and $255,%r8' -# I simply 'inc %r8b'. Even though optimization manual discourages -# to operate on partial registers, it turned out to be the best bet. -# At least for AMD... How IA32E would perform remains to be seen... - -# As was shown by Marc Bevand reordering of couple of load operations -# results in even higher performance gain of 3.3x:-) At least on -# Opteron... For reference, 1x in this case is RC4_CHAR C-code -# compiled with gcc 3.3.2, which performs at ~54MBps per 1GHz clock. -# Latter means that if you want to *estimate* what to expect from -# *your* Opteron, then multiply 54 by 3.3 and clock frequency in GHz. - -# Intel P4 EM64T core was found to run the AMD64 code really slow... -# The only way to achieve comparable performance on P4 was to keep -# RC4_CHAR. Kind of ironic, huh? As it's apparently impossible to -# compose blended code, which would perform even within 30% marginal -# on either AMD and Intel platforms, I implement both cases. See -# rc4_skey.c for further details... - -# P4 EM64T core appears to be "allergic" to 64-bit inc/dec. Replacing -# those with add/sub results in 50% performance improvement of folded -# loop... - -# As was shown by Zou Nanhai loop unrolling can improve Intel EM64T -# performance by >30% [unlike P4 32-bit case that is]. But this is -# provided that loads are reordered even more aggressively! Both code -# pathes, AMD64 and EM64T, reorder loads in essentially same manner -# as my IA-64 implementation. On Opteron this resulted in modest 5% -# improvement [I had to test it], while final Intel P4 performance -# achieves respectful 432MBps on 2.8GHz processor now. For reference. -# If executed on Xeon, current RC4_CHAR code-path is 2.7x faster than -# RC4_INT code-path. While if executed on Opteron, it's only 25% -# slower than the RC4_INT one [meaning that if CPU µ-arch detection -# is not implemented, then this final RC4_CHAR code-path should be -# preferred, as it provides better *all-round* performance]. - -# Intel Core2 was observed to perform poorly on both code paths:-( It -# apparently suffers from some kind of partial register stall, which -# occurs in 64-bit mode only [as virtually identical 32-bit loop was -# observed to outperform 64-bit one by almost 50%]. Adding two movzb to -# cloop1 boosts its performance by 80%! This loop appears to be optimal -# fit for Core2 and therefore the code was modified to skip cloop8 on -# this CPU. - -$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 STDOUT,"| $^X $xlate $flavour $output"; - -$dat="%rdi"; # arg1 -$len="%rsi"; # arg2 -$inp="%rdx"; # arg3 -$out="%rcx"; # arg4 - -@XX=("%r8","%r10"); -@TX=("%r9","%r11"); -$YY="%r12"; -$TY="%r13"; - -$code=<<___; -.text - -.globl RC4 -.type RC4,\@function,4 -.align 16 -RC4: or $len,$len - jne .Lentry - ret -.Lentry: - push %rbx - push %r12 - push %r13 -.Lprologue: - - add \$8,$dat - movl -8($dat),$XX[0]#d - movl -4($dat),$YY#d - cmpl \$-1,256($dat) - je .LRC4_CHAR - inc $XX[0]#b - movl ($dat,$XX[0],4),$TX[0]#d - test \$-8,$len - jz .Lloop1 - jmp .Lloop8 -.align 16 -.Lloop8: -___ -for ($i=0;$i<8;$i++) { -$code.=<<___; - add $TX[0]#b,$YY#b - mov $XX[0],$XX[1] - movl ($dat,$YY,4),$TY#d - ror \$8,%rax # ror is redundant when $i=0 - inc $XX[1]#b - movl ($dat,$XX[1],4),$TX[1]#d - cmp $XX[1],$YY - movl $TX[0]#d,($dat,$YY,4) - cmove $TX[0],$TX[1] - movl $TY#d,($dat,$XX[0],4) - add $TX[0]#b,$TY#b - movb ($dat,$TY,4),%al -___ -push(@TX,shift(@TX)); push(@XX,shift(@XX)); # "rotate" registers -} -$code.=<<___; - ror \$8,%rax - sub \$8,$len - - xor ($inp),%rax - add \$8,$inp - mov %rax,($out) - add \$8,$out - - test \$-8,$len - jnz .Lloop8 - cmp \$0,$len - jne .Lloop1 - jmp .Lexit - -.align 16 -.Lloop1: - add $TX[0]#b,$YY#b - movl ($dat,$YY,4),$TY#d - movl $TX[0]#d,($dat,$YY,4) - movl $TY#d,($dat,$XX[0],4) - add $TY#b,$TX[0]#b - inc $XX[0]#b - movl ($dat,$TX[0],4),$TY#d - movl ($dat,$XX[0],4),$TX[0]#d - xorb ($inp),$TY#b - inc $inp - movb $TY#b,($out) - inc $out - dec $len - jnz .Lloop1 - jmp .Lexit - -.align 16 -.LRC4_CHAR: - add \$1,$XX[0]#b - movzb ($dat,$XX[0]),$TX[0]#d - test \$-8,$len - jz .Lcloop1 - cmpl \$0,260($dat) - jnz .Lcloop1 - jmp .Lcloop8 -.align 16 -.Lcloop8: - mov ($inp),%eax - mov 4($inp),%ebx -___ -# unroll 2x4-wise, because 64-bit rotates kill Intel P4... -for ($i=0;$i<4;$i++) { -$code.=<<___; - add $TX[0]#b,$YY#b - lea 1($XX[0]),$XX[1] - movzb ($dat,$YY),$TY#d - movzb $XX[1]#b,$XX[1]#d - movzb ($dat,$XX[1]),$TX[1]#d - movb $TX[0]#b,($dat,$YY) - cmp $XX[1],$YY - movb $TY#b,($dat,$XX[0]) - jne .Lcmov$i # Intel cmov is sloooow... - mov $TX[0],$TX[1] -.Lcmov$i: - add $TX[0]#b,$TY#b - xor ($dat,$TY),%al - ror \$8,%eax -___ -push(@TX,shift(@TX)); push(@XX,shift(@XX)); # "rotate" registers -} -for ($i=4;$i<8;$i++) { -$code.=<<___; - add $TX[0]#b,$YY#b - lea 1($XX[0]),$XX[1] - movzb ($dat,$YY),$TY#d - movzb $XX[1]#b,$XX[1]#d - movzb ($dat,$XX[1]),$TX[1]#d - movb $TX[0]#b,($dat,$YY) - cmp $XX[1],$YY - movb $TY#b,($dat,$XX[0]) - jne .Lcmov$i # Intel cmov is sloooow... - mov $TX[0],$TX[1] -.Lcmov$i: - add $TX[0]#b,$TY#b - xor ($dat,$TY),%bl - ror \$8,%ebx -___ -push(@TX,shift(@TX)); push(@XX,shift(@XX)); # "rotate" registers -} -$code.=<<___; - lea -8($len),$len - mov %eax,($out) - lea 8($inp),$inp - mov %ebx,4($out) - lea 8($out),$out - - test \$-8,$len - jnz .Lcloop8 - cmp \$0,$len - jne .Lcloop1 - jmp .Lexit -___ -$code.=<<___; -.align 16 -.Lcloop1: - add $TX[0]#b,$YY#b - movzb ($dat,$YY),$TY#d - movb $TX[0]#b,($dat,$YY) - movb $TY#b,($dat,$XX[0]) - add $TX[0]#b,$TY#b - add \$1,$XX[0]#b - movzb $TY#b,$TY#d - movzb $XX[0]#b,$XX[0]#d - movzb ($dat,$TY),$TY#d - movzb ($dat,$XX[0]),$TX[0]#d - xorb ($inp),$TY#b - lea 1($inp),$inp - movb $TY#b,($out) - lea 1($out),$out - sub \$1,$len - jnz .Lcloop1 - jmp .Lexit - -.align 16 -.Lexit: - sub \$1,$XX[0]#b - movl $XX[0]#d,-8($dat) - movl $YY#d,-4($dat) - - mov (%rsp),%r13 - mov 8(%rsp),%r12 - mov 16(%rsp),%rbx - add \$24,%rsp -.Lepilogue: - ret -.size RC4,.-RC4 -___ - -$idx="%r8"; -$ido="%r9"; - -$code.=<<___; -.extern OPENSSL_ia32cap_P -.globl RC4_set_key -.type RC4_set_key,\@function,3 -.align 16 -RC4_set_key: - lea 8($dat),$dat - lea ($inp,$len),$inp - neg $len - mov $len,%rcx - xor %eax,%eax - xor $ido,$ido - xor %r10,%r10 - xor %r11,%r11 - - mov OPENSSL_ia32cap_P(%rip),$idx#d - bt \$20,$idx#d - jnc .Lw1stloop - bt \$30,$idx#d - setc $ido#b - mov $ido#d,260($dat) - jmp .Lc1stloop - -.align 16 -.Lw1stloop: - mov %eax,($dat,%rax,4) - add \$1,%al - jnc .Lw1stloop - - xor $ido,$ido - xor $idx,$idx -.align 16 -.Lw2ndloop: - mov ($dat,$ido,4),%r10d - add ($inp,$len,1),$idx#b - add %r10b,$idx#b - add \$1,$len - mov ($dat,$idx,4),%r11d - cmovz %rcx,$len - mov %r10d,($dat,$idx,4) - mov %r11d,($dat,$ido,4) - add \$1,$ido#b - jnc .Lw2ndloop - jmp .Lexit_key - -.align 16 -.Lc1stloop: - mov %al,($dat,%rax) - add \$1,%al - jnc .Lc1stloop - - xor $ido,$ido - xor $idx,$idx -.align 16 -.Lc2ndloop: - mov ($dat,$ido),%r10b - add ($inp,$len),$idx#b - add %r10b,$idx#b - add \$1,$len - mov ($dat,$idx),%r11b - jnz .Lcnowrap - mov %rcx,$len -.Lcnowrap: - mov %r10b,($dat,$idx) - mov %r11b,($dat,$ido) - add \$1,$ido#b - jnc .Lc2ndloop - movl \$-1,256($dat) - -.align 16 -.Lexit_key: - xor %eax,%eax - mov %eax,-8($dat) - mov %eax,-4($dat) - ret -.size RC4_set_key,.-RC4_set_key - -.globl RC4_options -.type RC4_options,\@abi-omnipotent -.align 16 -RC4_options: - lea .Lopts(%rip),%rax - mov OPENSSL_ia32cap_P(%rip),%edx - bt \$20,%edx - jnc .Ldone - add \$12,%rax - bt \$30,%edx - jnc .Ldone - add \$13,%rax -.Ldone: - ret -.align 64 -.Lopts: -.asciz "rc4(8x,int)" -.asciz "rc4(8x,char)" -.asciz "rc4(1x,char)" -.asciz "RC4 for x86_64, CRYPTOGAMS by <appro\@openssl.org>" -.align 64 -.size RC4_options,.-RC4_options -___ - -# 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 stream_se_handler,\@abi-omnipotent -.align 16 -stream_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 .Lprologue(%rip),%r10 - cmp %r10,%rbx # context->Rip<prologue label - jb .Lin_prologue - - mov 152($context),%rax # pull context->Rsp - - lea .Lepilogue(%rip),%r10 - cmp %r10,%rbx # context->Rip>=epilogue label - jae .Lin_prologue - - lea 24(%rax),%rax - - mov -8(%rax),%rbx - mov -16(%rax),%r12 - mov -24(%rax),%r13 - mov %rbx,144($context) # restore context->Rbx - mov %r12,216($context) # restore context->R12 - mov %r13,224($context) # restore context->R13 - -.Lin_prologue: - 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($context) # restore context->Rdi - - jmp .Lcommon_seh_exit -.size stream_se_handler,.-stream_se_handler - -.type key_se_handler,\@abi-omnipotent -.align 16 -key_se_handler: - push %rsi - push %rdi - push %rbx - push %rbp - push %r12 - push %r13 - push %r14 - push %r15 - pushfq - sub \$64,%rsp - - mov 152($context),%rax # pull context->Rsp - mov 8(%rax),%rdi - mov 16(%rax),%rsi - mov %rsi,168($context) # restore context->Rsi - mov %rdi,176($context) # restore context->Rdi - -.Lcommon_seh_exit: - - mov 40($disp),%rdi # disp->ContextRecord - mov $context,%rsi # context - mov \$154,%ecx # sizeof(CONTEXT) - .long 0xa548f3fc # cld; rep movsq - - mov $disp,%rsi - xor %rcx,%rcx # arg1, UNW_FLAG_NHANDLER - mov 8(%rsi),%rdx # arg2, disp->ImageBase - mov 0(%rsi),%r8 # arg3, disp->ControlPc - mov 16(%rsi),%r9 # arg4, disp->FunctionEntry - mov 40(%rsi),%r10 # disp->ContextRecord - lea 56(%rsi),%r11 # &disp->HandlerData - lea 24(%rsi),%r12 # &disp->EstablisherFrame - mov %r10,32(%rsp) # arg5 - mov %r11,40(%rsp) # arg6 - mov %r12,48(%rsp) # arg7 - mov %rcx,56(%rsp) # arg8, (NULL) - call *__imp_RtlVirtualUnwind(%rip) - - mov \$1,%eax # ExceptionContinueSearch - add \$64,%rsp - popfq - pop %r15 - pop %r14 - pop %r13 - pop %r12 - pop %rbp - pop %rbx - pop %rdi - pop %rsi - ret -.size key_se_handler,.-key_se_handler - -.section .pdata -.align 4 - .rva .LSEH_begin_RC4 - .rva .LSEH_end_RC4 - .rva .LSEH_info_RC4 - - .rva .LSEH_begin_RC4_set_key - .rva .LSEH_end_RC4_set_key - .rva .LSEH_info_RC4_set_key - -.section .xdata -.align 8 -.LSEH_info_RC4: - .byte 9,0,0,0 - .rva stream_se_handler -.LSEH_info_RC4_set_key: - .byte 9,0,0,0 - .rva key_se_handler -___ -} - -$code =~ s/#([bwd])/$1/gm; - -print $code; - -close STDOUT; |