diff options
Diffstat (limited to 'crypto/perlasm/x86_64-xlate.pl')
| -rwxr-xr-x | crypto/perlasm/x86_64-xlate.pl | 80 |
1 files changed, 64 insertions, 16 deletions
diff --git a/crypto/perlasm/x86_64-xlate.pl b/crypto/perlasm/x86_64-xlate.pl index ef1a4ce..a4af769 100755 --- a/crypto/perlasm/x86_64-xlate.pl +++ b/crypto/perlasm/x86_64-xlate.pl @@ -57,9 +57,18 @@ # lea .Label-.Lpic_point(%rcx),%rbp my $output = shift; -open STDOUT,">$output" || die "can't open $output: $!"; -my $masm=1 if ($output =~ /\.asm/); +{ my ($stddev,$stdino,@junk)=stat(STDOUT); + my ($outdev,$outino,@junk)=stat($output); + + open STDOUT,">$output" || die "can't open $output: $!" + if ($stddev!=$outdev || $stdino!=$outino); +} + +my $masmref=8 + 50727*2**-32; # 8.00.50727 shipped with VS2005 +my $masm=$masmref if ($output =~ /\.asm/); +if ($masm && `ml64 2>&1` =~ m/Version ([0-9]+)\.([0-9]+)(\.([0-9]+))?/) +{ $masm=$1 + $2*2**-16 + $4*2**-32; } my $current_segment; my $current_function; @@ -70,16 +79,18 @@ my $current_function; local *line = shift; undef $ret; - if ($line =~ /^([a-z]+)/i) { + if ($line =~ /^([a-z][a-z0-9]*)/i) { $self->{op} = $1; $ret = $self; $line = substr($line,@+[0]); $line =~ s/^\s+//; undef $self->{sz}; - if ($self->{op} =~ /(movz)b.*/) { # movz is pain... + if ($self->{op} =~ /^(movz)b.*/) { # movz is pain... $self->{op} = $1; $self->{sz} = "b"; - } elsif ($self->{op} =~ /([a-z]{3,})([qlwb])/) { + } elsif ($self->{op} =~ /call/) { + $self->{sz} = "" + } elsif ($self->{op} =~ /([a-z]{3,})([qlwb])$/) { $self->{op} = $1; $self->{sz} = $2; } @@ -95,15 +106,17 @@ my $current_function; sub out { my $self = shift; if (!$masm) { - if ($self->{op} eq "movz") { # movz in pain... + if ($self->{op} eq "movz") { # movz is pain... sprintf "%s%s%s",$self->{op},$self->{sz},shift; + } elsif ($self->{op} =~ /^set/) { + "$self->{op}"; } elsif ($self->{op} eq "ret") { ".byte 0xf3,0xc3"; } else { "$self->{op}$self->{sz}"; } } else { - $self->{op} =~ s/movz/movzx/; + $self->{op} =~ s/^movz/movzx/; if ($self->{op} eq "ret") { $self->{op} = ""; if ($current_function->{abi} eq "svr4") { @@ -133,6 +146,10 @@ my $current_function; my $self = shift; if (!$masm) { + # Solaris /usr/ccs/bin/as can't handle multiplications + # in $self->{value} + $self->{value} =~ s/(?<![0-9a-f])(0[x0-9a-f]+)/oct($1)/egi; + $self->{value} =~ s/([0-9]+\s*[\*\/\%]\s*[0-9]+)/eval($1)/eg; sprintf "\$%s",$self->{value}; } else { $self->{value} =~ s/0x([0-9a-f]+)/0$1h/ig; @@ -163,14 +180,16 @@ my $current_function; my $self = shift; my $sz = shift; + # Silently convert all EAs to 64-bit. This is required for + # elder GNU assembler and results in more compact code, + # *but* most importantly AES module depends on this feature! + $self->{index} =~ s/^[er](.?[0-9xpi])[d]?$/r\1/; + $self->{base} =~ s/^[er](.?[0-9xpi])[d]?$/r\1/; + if (!$masm) { - # elder GNU assembler insists on 64-bit EAs:-( - # on pros side, this results in more compact code:-) - $self->{index} =~ s/^[er](.?[0-9xp])[d]?$/r\1/; - $self->{base} =~ s/^[er](.?[0-9xp])[d]?$/r\1/; # Solaris /usr/ccs/bin/as can't handle multiplications # in $self->{label} - $self->{label} =~ s/(?<![0-9a-f])(0[x0-9a-f]+)/oct($1)/eg; + $self->{label} =~ s/(?<![0-9a-f])(0[x0-9a-f]+)/oct($1)/egi; $self->{label} =~ s/([0-9]+\s*[\*\/\%]\s*[0-9]+)/eval($1)/eg; if (defined($self->{index})) { @@ -192,6 +211,8 @@ my $current_function; $self->{label}, $self->{index},$self->{scale}, $self->{base}; + } elsif ($self->{base} eq "rip") { + sprintf "%s PTR %s",$szmap{$sz},$self->{label}; } else { sprintf "%s PTR %s[%s]",$szmap{$sz}, $self->{label},$self->{base}; @@ -317,6 +338,10 @@ my $current_function; $line =~ s/\@function.*/\@function/; if ($line =~ /\.picmeup\s+(%r[\w]+)/i) { $self->{value} = sprintf "\t.long\t0x%x,0x90000000",$opcode{$1}; + } elsif ($line =~ /\.asciz\s+"(.*)"$/) { + $self->{value} = ".byte\t".join(",",unpack("C*",$1),0); + } elsif ($line =~ /\.extern/) { + $self->{value} = ""; # swallow extern } else { $self->{value} = $line; } @@ -334,10 +359,13 @@ my $current_function; $v="$current_segment\tENDS\n" if ($current_segment); $current_segment = "_$1\$"; $current_segment =~ tr/[a-z]/[A-Z]/; - $v.="$current_segment\tSEGMENT ALIGN(64) 'CODE'"; + $v.="$current_segment\tSEGMENT "; + $v.=$masm>=$masmref ? "ALIGN(64)" : "PAGE"; + $v.=" 'CODE'"; $self->{value} = $v; last; }; + /\.extern/ && do { $self->{value} = "EXTRN\t".$line.":BYTE"; last; }; /\.globl/ && do { $self->{value} = "PUBLIC\t".$line; last; }; /\.type/ && do { ($sym,$type,$narg) = split(',',$line); if ($type eq "\@function") { @@ -362,16 +390,33 @@ my $current_function; && do { my @arr = split(',',$line); my $sz = substr($1,0,1); my $last = pop(@arr); + my $conv = sub { my $var=shift; + if ($var=~s/0x([0-9a-f]+)/0$1h/i) { $var; } + else { sprintf"0%Xh",$var; } + }; $sz =~ tr/bvlq/BWDQ/; $self->{value} = "\tD$sz\t"; - for (@arr) { $self->{value} .= sprintf"0%Xh,",oct; } - $self->{value} .= sprintf"0%Xh",oct($last); + for (@arr) { $self->{value} .= &$conv($_).","; } + $self->{value} .= &$conv($last); last; }; /\.picmeup/ && do { $self->{value} = sprintf"\tDD\t 0%Xh,090000000h",$opcode{$line}; last; }; + /\.asciz/ && do { if ($line =~ /^"(.*)"$/) { + my @str=unpack("C*",$1); + push @str,0; + while ($#str>15) { + $self->{value}.="DB\t" + .join(",",@str[0..15])."\n"; + foreach (0..15) { shift @str; } + } + $self->{value}.="DB\t" + .join(",",@str) if (@str); + } + last; + }; } $line = ""; } @@ -480,7 +525,10 @@ close STDOUT; # arguments passed to callee, *but* not less than 4! This means that # upon function entry point 5th argument resides at 40(%rsp), as well # as that 32 bytes from 8(%rsp) can always be used as temporal -# storage [without allocating a frame]. +# storage [without allocating a frame]. One can actually argue that +# one can assume a "red zone" above stack pointer under Win64 as well. +# Point is that at apparently no occasion Windows kernel would alter +# the area above user stack pointer in true asynchronous manner... # # All the above means that if assembler programmer adheres to Unix # register and stack layout, but disregards the "red zone" existense, |
