1d9e397b599b13d642138480a28c14db7a136bf0Adam Langley#!/usr/bin/env perl 2d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 3d9e397b599b13d642138480a28c14db7a136bf0Adam Langleypackage x86nasm; 4d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 5d9e397b599b13d642138480a28c14db7a136bf0Adam Langley*out=\@::out; 6d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 7d9e397b599b13d642138480a28c14db7a136bf0Adam Langley$::lbdecor="L\$"; # local label decoration 8d9e397b599b13d642138480a28c14db7a136bf0Adam Langley$nmdecor=$::netware?"":"_"; # external name decoration 9d9e397b599b13d642138480a28c14db7a136bf0Adam Langley$drdecor=$::mwerks?".":""; # directive decoration 10d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 11d9e397b599b13d642138480a28c14db7a136bf0Adam Langley$initseg=""; 12d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 13d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::generic 14d9e397b599b13d642138480a28c14db7a136bf0Adam Langley{ my $opcode=shift; 15d9e397b599b13d642138480a28c14db7a136bf0Adam Langley my $tmp; 16d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 17d9e397b599b13d642138480a28c14db7a136bf0Adam Langley if (!$::mwerks) 18d9e397b599b13d642138480a28c14db7a136bf0Adam Langley { if ($opcode =~ m/^j/o && $#_==0) # optimize jumps 19d9e397b599b13d642138480a28c14db7a136bf0Adam Langley { $_[0] = "NEAR $_[0]"; } 20d9e397b599b13d642138480a28c14db7a136bf0Adam Langley elsif ($opcode eq "lea" && $#_==1) # wipe storage qualifier from lea 21d9e397b599b13d642138480a28c14db7a136bf0Adam Langley { $_[1] =~ s/^[^\[]*\[/\[/o; } 22d9e397b599b13d642138480a28c14db7a136bf0Adam Langley elsif ($opcode eq "clflush" && $#_==0) 23d9e397b599b13d642138480a28c14db7a136bf0Adam Langley { $_[0] =~ s/^[^\[]*\[/\[/o; } 24d9e397b599b13d642138480a28c14db7a136bf0Adam Langley } 25d9e397b599b13d642138480a28c14db7a136bf0Adam Langley &::emit($opcode,@_); 26d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 1; 27d9e397b599b13d642138480a28c14db7a136bf0Adam Langley} 28d9e397b599b13d642138480a28c14db7a136bf0Adam Langley# 29d9e397b599b13d642138480a28c14db7a136bf0Adam Langley# opcodes not covered by ::generic above, mostly inconsistent namings... 30d9e397b599b13d642138480a28c14db7a136bf0Adam Langley# 31d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::call { &::emit("call",(&::islabel($_[0]) or "$nmdecor$_[0]")); } 32d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::call_ptr { &::emit("call",@_); } 33d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::jmp_ptr { &::emit("jmp",@_); } 34d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 35d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub get_mem 36d9e397b599b13d642138480a28c14db7a136bf0Adam Langley{ my($size,$addr,$reg1,$reg2,$idx)=@_; 37d9e397b599b13d642138480a28c14db7a136bf0Adam Langley my($post,$ret); 38d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 39d9e397b599b13d642138480a28c14db7a136bf0Adam Langley if (!defined($idx) && 1*$reg2) { $idx=$reg2; $reg2=$reg1; undef $reg1; } 40d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 41d9e397b599b13d642138480a28c14db7a136bf0Adam Langley if ($size ne "") 42d9e397b599b13d642138480a28c14db7a136bf0Adam Langley { $ret .= "$size"; 43d9e397b599b13d642138480a28c14db7a136bf0Adam Langley $ret .= " PTR" if ($::mwerks); 44d9e397b599b13d642138480a28c14db7a136bf0Adam Langley $ret .= " "; 45d9e397b599b13d642138480a28c14db7a136bf0Adam Langley } 46d9e397b599b13d642138480a28c14db7a136bf0Adam Langley $ret .= "["; 47d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 48d9e397b599b13d642138480a28c14db7a136bf0Adam Langley $addr =~ s/^\s+//; 49d9e397b599b13d642138480a28c14db7a136bf0Adam Langley # prepend global references with optional underscore 50d9e397b599b13d642138480a28c14db7a136bf0Adam Langley $addr =~ s/^([^\+\-0-9][^\+\-]*)/::islabel($1) or "$nmdecor$1"/ige; 51d9e397b599b13d642138480a28c14db7a136bf0Adam Langley # put address arithmetic expression in parenthesis 52d9e397b599b13d642138480a28c14db7a136bf0Adam Langley $addr="($addr)" if ($addr =~ /^.+[\-\+].+$/); 53d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 54d9e397b599b13d642138480a28c14db7a136bf0Adam Langley if (($addr ne "") && ($addr ne 0)) 55d9e397b599b13d642138480a28c14db7a136bf0Adam Langley { if ($addr !~ /^-/) { $ret .= "$addr+"; } 56d9e397b599b13d642138480a28c14db7a136bf0Adam Langley else { $post=$addr; } 57d9e397b599b13d642138480a28c14db7a136bf0Adam Langley } 58d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 59d9e397b599b13d642138480a28c14db7a136bf0Adam Langley if ($reg2 ne "") 60d9e397b599b13d642138480a28c14db7a136bf0Adam Langley { $idx!=0 or $idx=1; 61d9e397b599b13d642138480a28c14db7a136bf0Adam Langley $ret .= "$reg2*$idx"; 62d9e397b599b13d642138480a28c14db7a136bf0Adam Langley $ret .= "+$reg1" if ($reg1 ne ""); 63d9e397b599b13d642138480a28c14db7a136bf0Adam Langley } 64d9e397b599b13d642138480a28c14db7a136bf0Adam Langley else 65d9e397b599b13d642138480a28c14db7a136bf0Adam Langley { $ret .= "$reg1"; } 66d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 67d9e397b599b13d642138480a28c14db7a136bf0Adam Langley $ret .= "$post]"; 68d9e397b599b13d642138480a28c14db7a136bf0Adam Langley $ret =~ s/\+\]/]/; # in case $addr was the only argument 69d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 70d9e397b599b13d642138480a28c14db7a136bf0Adam Langley $ret; 71d9e397b599b13d642138480a28c14db7a136bf0Adam Langley} 72d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::BP { &get_mem("BYTE",@_); } 73d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::DWP { &get_mem("DWORD",@_); } 74d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::WP { &get_mem("WORD",@_); } 75d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::QWP { &get_mem("",@_); } 76d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::BC { (($::mwerks)?"":"BYTE ")."@_"; } 77d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::DWC { (($::mwerks)?"":"DWORD ")."@_"; } 78d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 79d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::file 80d9e397b599b13d642138480a28c14db7a136bf0Adam Langley{ if ($::mwerks) { push(@out,".section\t.text,64\n"); } 81d9e397b599b13d642138480a28c14db7a136bf0Adam Langley else 82d9e397b599b13d642138480a28c14db7a136bf0Adam Langley { my $tmp=<<___; 83d9e397b599b13d642138480a28c14db7a136bf0Adam Langley%ifidn __OUTPUT_FORMAT__,obj 84d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysection code use32 class=code align=64 85d9e397b599b13d642138480a28c14db7a136bf0Adam Langley%elifidn __OUTPUT_FORMAT__,win32 86d9e397b599b13d642138480a28c14db7a136bf0Adam Langley%ifdef __YASM_VERSION_ID__ 87d9e397b599b13d642138480a28c14db7a136bf0Adam Langley%if __YASM_VERSION_ID__ < 01010000h 88d9e397b599b13d642138480a28c14db7a136bf0Adam Langley%error yasm version 1.1.0 or later needed. 89d9e397b599b13d642138480a28c14db7a136bf0Adam Langley%endif 90d9e397b599b13d642138480a28c14db7a136bf0Adam Langley; Yasm automatically includes @feat.00 and complains about redefining it. 91d9e397b599b13d642138480a28c14db7a136bf0Adam Langley; https://www.tortall.net/projects/yasm/manual/html/objfmt-win32-safeseh.html 92d9e397b599b13d642138480a28c14db7a136bf0Adam Langley%else 93d9e397b599b13d642138480a28c14db7a136bf0Adam Langley\$\@feat.00 equ 1 94d9e397b599b13d642138480a28c14db7a136bf0Adam Langley%endif 95d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysection .text code align=64 96d9e397b599b13d642138480a28c14db7a136bf0Adam Langley%else 97d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysection .text code 98d9e397b599b13d642138480a28c14db7a136bf0Adam Langley%endif 99d9e397b599b13d642138480a28c14db7a136bf0Adam Langley___ 100d9e397b599b13d642138480a28c14db7a136bf0Adam Langley push(@out,$tmp); 101d9e397b599b13d642138480a28c14db7a136bf0Adam Langley } 102d9e397b599b13d642138480a28c14db7a136bf0Adam Langley} 103d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 104d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::function_begin_B 105d9e397b599b13d642138480a28c14db7a136bf0Adam Langley{ my $func=shift; 106d9e397b599b13d642138480a28c14db7a136bf0Adam Langley my $global=($func !~ /^_/); 107d9e397b599b13d642138480a28c14db7a136bf0Adam Langley my $begin="${::lbdecor}_${func}_begin"; 108d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 109d9e397b599b13d642138480a28c14db7a136bf0Adam Langley $begin =~ s/^\@/./ if ($::mwerks); # the torture never stops 110d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 111d9e397b599b13d642138480a28c14db7a136bf0Adam Langley &::LABEL($func,$global?"$begin":"$nmdecor$func"); 112d9e397b599b13d642138480a28c14db7a136bf0Adam Langley $func=$nmdecor.$func; 113d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 114d9e397b599b13d642138480a28c14db7a136bf0Adam Langley push(@out,"${drdecor}global $func\n") if ($global); 115d9e397b599b13d642138480a28c14db7a136bf0Adam Langley push(@out,"${drdecor}align 16\n"); 116d9e397b599b13d642138480a28c14db7a136bf0Adam Langley push(@out,"$func:\n"); 117d9e397b599b13d642138480a28c14db7a136bf0Adam Langley push(@out,"$begin:\n") if ($global); 118d9e397b599b13d642138480a28c14db7a136bf0Adam Langley $::stack=4; 119d9e397b599b13d642138480a28c14db7a136bf0Adam Langley} 120d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 121d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::function_end_B 122d9e397b599b13d642138480a28c14db7a136bf0Adam Langley{ $::stack=0; 123d9e397b599b13d642138480a28c14db7a136bf0Adam Langley &::wipe_labels(); 124d9e397b599b13d642138480a28c14db7a136bf0Adam Langley} 125d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 126d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::file_end 127d9e397b599b13d642138480a28c14db7a136bf0Adam Langley{ if (grep {/\b${nmdecor}OPENSSL_ia32cap_P\b/i} @out) 128d9e397b599b13d642138480a28c14db7a136bf0Adam Langley { my $comm=<<___; 129d9e397b599b13d642138480a28c14db7a136bf0Adam Langley${drdecor}segment .bss 130d9e397b599b13d642138480a28c14db7a136bf0Adam Langley${drdecor}common ${nmdecor}OPENSSL_ia32cap_P 16 131d9e397b599b13d642138480a28c14db7a136bf0Adam Langley___ 132d9e397b599b13d642138480a28c14db7a136bf0Adam Langley # comment out OPENSSL_ia32cap_P declarations 133d9e397b599b13d642138480a28c14db7a136bf0Adam Langley grep {s/(^extern\s+${nmdecor}OPENSSL_ia32cap_P)/\;$1/} @out; 134d9e397b599b13d642138480a28c14db7a136bf0Adam Langley push (@out,$comm) 135d9e397b599b13d642138480a28c14db7a136bf0Adam Langley } 136d9e397b599b13d642138480a28c14db7a136bf0Adam Langley push (@out,$initseg) if ($initseg); 137d9e397b599b13d642138480a28c14db7a136bf0Adam Langley} 138d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 139d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::comment { foreach (@_) { push(@out,"\t; $_\n"); } } 140d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 141d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::external_label 142d9e397b599b13d642138480a28c14db7a136bf0Adam Langley{ foreach(@_) 143d9e397b599b13d642138480a28c14db7a136bf0Adam Langley { push(@out,"${drdecor}extern\t".&::LABEL($_,$nmdecor.$_)."\n"); } 144d9e397b599b13d642138480a28c14db7a136bf0Adam Langley} 145d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 146d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::public_label 147d9e397b599b13d642138480a28c14db7a136bf0Adam Langley{ push(@out,"${drdecor}global\t".&::LABEL($_[0],$nmdecor.$_[0])."\n"); } 148d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 149d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::data_byte 150d9e397b599b13d642138480a28c14db7a136bf0Adam Langley{ push(@out,(($::mwerks)?".byte\t":"db\t").join(',',@_)."\n"); } 151d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::data_short 152d9e397b599b13d642138480a28c14db7a136bf0Adam Langley{ push(@out,(($::mwerks)?".word\t":"dw\t").join(',',@_)."\n"); } 153d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::data_word 154d9e397b599b13d642138480a28c14db7a136bf0Adam Langley{ push(@out,(($::mwerks)?".long\t":"dd\t").join(',',@_)."\n"); } 155d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 156d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::align 157d9e397b599b13d642138480a28c14db7a136bf0Adam Langley{ push(@out,"${drdecor}align\t$_[0]\n"); } 158d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 159d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::picmeup 160d9e397b599b13d642138480a28c14db7a136bf0Adam Langley{ my($dst,$sym)=@_; 161d9e397b599b13d642138480a28c14db7a136bf0Adam Langley &::lea($dst,&::DWP($sym)); 162d9e397b599b13d642138480a28c14db7a136bf0Adam Langley} 163d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 164d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::initseg 165d9e397b599b13d642138480a28c14db7a136bf0Adam Langley{ my $f=$nmdecor.shift; 166d9e397b599b13d642138480a28c14db7a136bf0Adam Langley if ($::win32) 167d9e397b599b13d642138480a28c14db7a136bf0Adam Langley { $initseg=<<___; 168d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysegment .CRT\$XCU data align=4 169d9e397b599b13d642138480a28c14db7a136bf0Adam Langleyextern $f 170d9e397b599b13d642138480a28c14db7a136bf0Adam Langleydd $f 171d9e397b599b13d642138480a28c14db7a136bf0Adam Langley___ 172d9e397b599b13d642138480a28c14db7a136bf0Adam Langley } 173d9e397b599b13d642138480a28c14db7a136bf0Adam Langley} 174d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 175d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::dataseg 176d9e397b599b13d642138480a28c14db7a136bf0Adam Langley{ if ($mwerks) { push(@out,".section\t.data,4\n"); } 177d9e397b599b13d642138480a28c14db7a136bf0Adam Langley else { push(@out,"section\t.data align=4\n"); } 178d9e397b599b13d642138480a28c14db7a136bf0Adam Langley} 179d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 180d9e397b599b13d642138480a28c14db7a136bf0Adam Langleysub ::safeseh 181d9e397b599b13d642138480a28c14db7a136bf0Adam Langley{ my $nm=shift; 182d9e397b599b13d642138480a28c14db7a136bf0Adam Langley push(@out,"%if __NASM_VERSION_ID__ >= 0x02030000\n"); 183d9e397b599b13d642138480a28c14db7a136bf0Adam Langley push(@out,"safeseh ".&::LABEL($nm,$nmdecor.$nm)."\n"); 184d9e397b599b13d642138480a28c14db7a136bf0Adam Langley push(@out,"%endif\n"); 185d9e397b599b13d642138480a28c14db7a136bf0Adam Langley} 186d9e397b599b13d642138480a28c14db7a136bf0Adam Langley 187d9e397b599b13d642138480a28c14db7a136bf0Adam Langley1; 188