# 6. Don't use [or hand-code with .byte] "rep ret." "ret" mnemonic is
# required to identify the spots, where to inject Win64 epilogue!
# But on the pros, it's then prefixed with rep automatically:-)
-# 7. Due to MASM limitations [and certain general counter-intuitivity
-# of ip-relative addressing] generation of position-independent
-# code is assisted by synthetic directive, .picmeup, which puts
-# address of the *next* instruction into target register.
+# 7. Stick to explicit ip-relative addressing. If you have to use
+# GOTPCREL addressing, stick to mov symbol@GOTPCREL(%rip),%r??.
+# Both are recognized and translated to proper Win64 addressing
+# modes. To support legacy code a synthetic directive, .picmeup,
+# is implemented. It puts address of the *next* instruction into
+# target register, e.g.:
#
-# Example 1:
# .picmeup %rax
# lea .Label-.(%rax),%rax
-# Example 2:
-# .picmeup %rcx
-# .Lpic_point:
-# ...
-# lea .Label-.Lpic_point(%rcx),%rbp
#
# 8. In order to provide for structured exception handling unified
# Win64 prologue copies %rsp value to %rax. For further details
# see SEH paragraph at the end.
+# 9. .init segment is allowed to contain calls to functions only.
+# a. If function accepts more than 4 arguments *and* >4th argument
+# is declared as non 64-bit value, do clear its upper part.
\f
-my $output = shift;
+my $flavour = shift;
+my $output = shift;
+if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
-{ my ($stddev,$stdino,@junk)=stat(STDOUT);
- my ($outdev,$outino,@junk)=stat($output);
+open STDOUT,">$output" || die "can't open $output: $!"
+ if (defined($output));
- open STDOUT,">$output" || die "can't open $output: $!"
- if ($stddev!=$outdev || $stdino!=$outino);
-}
-
-my $win64=1 if ($output =~ /\.asm/);
+my $gas=1; $gas=0 if ($output =~ /\.asm$/);
+my $elf=1; $elf=0 if (!$gas);
+my $win64=0;
+my $prefix="";
+my $decor=".L";
my $masmref=8 + 50727*2**-32; # 8.00.50727 shipped with VS2005
my $masm=0;
my $nasmref=2.03;
my $nasm=0;
-if ($win64)
+if ($flavour eq "mingw64") { $gas=1; $elf=0; $win64=1;
+ $prefix=`echo __USER_LABEL_PREFIX__ | $ENV{CC} -E -P -`;
+ chomp($prefix);
+ }
+elsif ($flavour eq "macosx") { $gas=1; $elf=0; $prefix="_"; $decor="L\$"; }
+elsif ($flavour eq "masm") { $gas=0; $elf=0; $masm=$masmref; $win64=1; $decor="\$L\$"; }
+elsif ($flavour eq "nasm") { $gas=0; $elf=0; $nasm=$nasmref; $win64=1; $decor="\$L\$"; $PTR=""; }
+elsif (!$gas)
{ if ($ENV{ASM} =~ m/nasm/ && `nasm -v` =~ m/version ([0-9]+)\.([0-9]+)/i)
{ $nasm = $1 + $2*0.01; $PTR=""; }
elsif (`ml64 2>&1` =~ m/Version ([0-9]+)\.([0-9]+)(\.([0-9]+))?/)
{ $masm = $1 + $2*2**-16 + $4*2**-32; }
die "no assembler found on %PATH" if (!($nasm || $masm));
+ $win64=1;
+ $elf=0;
+ $decor="\$L\$";
}
my $current_segment;
$line = substr($line,@+[0]); $line =~ s/^\s+//;
undef $self->{sz};
- if ($self->{op} =~ /^(movz)b.*/) { # movz is pain...
+ if ($self->{op} =~ /^(movz)x?([bw]).*/) { # movz is pain...
$self->{op} = $1;
- $self->{sz} = "b";
+ $self->{sz} = $2;
} elsif ($self->{op} =~ /call|jmp/) {
- $self->{sz} = ""
+ $self->{sz} = "";
+ } elsif ($self->{op} =~ /^p/ && $' !~ /^(ush|op|insrw)/) { # SSEn
+ $self->{sz} = "";
+ } elsif ($self->{op} =~ /^v/) { # VEX
+ $self->{sz} = "";
+ } elsif ($self->{op} =~ /movq/ && $line =~ /%xmm/) {
+ $self->{sz} = "";
} elsif ($self->{op} =~ /([a-z]{3,})([qlwb])$/) {
$self->{op} = $1;
$self->{sz} = $2;
}
sub out {
my $self = shift;
- if (!$win64) {
+ if ($gas) {
if ($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";
+ my $epilogue = "";
+ if ($win64 && $current_function->{abi} eq "svr4") {
+ $epilogue = "movq 8(%rsp),%rdi\n\t" .
+ "movq 16(%rsp),%rsi\n\t";
+ }
+ $epilogue . ".byte 0xf3,0xc3";
+ } elsif ($self->{op} eq "call" && !$elf && $current_segment eq ".init") {
+ ".p2align\t3\n\t.quad";
} else {
"$self->{op}$self->{sz}";
}
$self->{op} =~ s/^movz/movzx/;
if ($self->{op} eq "ret") {
$self->{op} = "";
- if ($current_function->{abi} eq "svr4") {
+ if ($win64 && $current_function->{abi} eq "svr4") {
$self->{op} = "mov rdi,QWORD${PTR}[8+rsp]\t;WIN64 epilogue\n\t".
"mov rsi,QWORD${PTR}[16+rsp]\n\t";
}
$self->{op} .= "DB\t0F3h,0C3h\t\t;repret";
- }
- elsif ($self->{op} =~ /^(pop|push)f/) {
+ } elsif ($self->{op} =~ /^(pop|push)f/) {
$self->{op} .= $self->{sz};
- }
+ } elsif ($self->{op} eq "call" && $current_segment eq ".CRT\$XCU") {
+ $self->{op} = "\tDQ";
+ }
$self->{op};
}
}
- sub mnemonic { shift->{op}; }
+ sub mnemonic {
+ my $self=shift;
+ my $op=shift;
+ $self->{op}=$op if (defined($op));
+ $self->{op};
+ }
}
{ package const; # pick up constants, which start with $
sub re {
sub out {
my $self = shift;
- if (!$win64) {
+ if ($gas) {
# 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/(?<![\w\$\.])(0x?[0-9a-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;
+ $self->{value} =~ s/(0b[0-1]+)/oct($1)/eig;
+ $self->{value} =~ s/0x([0-9a-f]+)/0$1h/ig if ($masm);
sprintf "%s",$self->{value};
}
}
$ret = $self;
$line = substr($line,@+[0]); $line =~ s/^\s+//;
+ if ($win64 && $self->{label} =~ s/\@GOTPCREL//) {
+ die if (opcode->mnemonic() ne "mov");
+ opcode->mnemonic("lea");
+ }
$self->{base} =~ s/^%//;
$self->{index} =~ s/^%// if (defined($self->{index}));
}
my $self = shift;
my $sz = shift;
+ $self->{label} =~ s/([_a-z][_a-z0-9]*)/$globals{$1} or $1/gei;
+ $self->{label} =~ s/\.L/$decor/g;
+
# 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 (!$win64) {
- # Solaris /usr/ccs/bin/as can't handle multiplications
- # in $self->{label}
- $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;
+ # Solaris /usr/ccs/bin/as can't handle multiplications
+ # in $self->{label}, new gas requires sign extension...
+ use integer;
+ $self->{label} =~ s/(?<![\w\$\.])(0x?[0-9a-f]+)/oct($1)/egi;
+ $self->{label} =~ s/\b([0-9]+\s*[\*\/\%]\s*[0-9]+)\b/eval($1)/eg;
+ $self->{label} =~ s/\b([0-9]+)\b/$1<<32>>32/eg;
+
+ if (!$self->{label} && $self->{index} && $self->{scale}==1 &&
+ $self->{base} =~ /(rbp|r13)/) {
+ $self->{base} = $self->{index}; $self->{index} = $1;
+ }
+
+ if ($gas) {
+ $self->{label} =~ s/^___imp_/__imp__/ if ($flavour eq "mingw64");
if (defined($self->{index})) {
- sprintf "%s%s(%%%s,%%%s,%d)",$self->{asterisk},
- $self->{label},$self->{base},
+ sprintf "%s%s(%s,%%%s,%d)",$self->{asterisk},
+ $self->{label},
+ $self->{base}?"%$self->{base}":"",
$self->{index},$self->{scale};
} else {
sprintf "%s%s(%%%s)", $self->{asterisk},$self->{label},$self->{base};
}
} else {
- %szmap = ( b=>"BYTE$PTR", w=>"WORD$PTR", l=>"DWORD$PTR", q=>"QWORD$PTR" );
+ %szmap = ( b=>"BYTE$PTR", w=>"WORD$PTR",
+ l=>"DWORD$PTR", d=>"DWORD$PTR",
+ q=>"QWORD$PTR", o=>"OWORD$PTR",
+ x=>"XMMWORD$PTR", y=>"YMMWORD$PTR", z=>"ZMMWORD$PTR" );
- $self->{label} =~ s/\.L/\$L\$/g;
$self->{label} =~ s/\./\$/g;
- $self->{label} =~ s/0x([0-9a-f]+)/0$1h/ig;
+ $self->{label} =~ s/(?<![\w\$\.])0x([0-9a-f]+)/0$1h/ig;
$self->{label} = "($self->{label})" if ($self->{label} =~ /[\*\+\-\/]/);
- $sz="q" if ($self->{asterisk});
+
+ ($self->{asterisk}) && ($sz="q") ||
+ (opcode->mnemonic() =~ /^v?mov([qd])$/) && ($sz=$1) ||
+ (opcode->mnemonic() =~ /^v?pinsr([qdwb])$/) && ($sz=$1) ||
+ (opcode->mnemonic() =~ /^vpbroadcast([qdwb])$/) && ($sz=$1) ||
+ (opcode->mnemonic() =~ /^vinsert[fi]128$/) && ($sz="x");
if (defined($self->{index})) {
- sprintf "%s[%s%s*%d+%s]",$szmap{$sz},
+ sprintf "%s[%s%s*%d%s]",$szmap{$sz},
$self->{label}?"$self->{label}+":"",
$self->{index},$self->{scale},
- $self->{base};
+ $self->{base}?"+$self->{base}":"";
} elsif ($self->{base} eq "rip") {
sprintf "%s[%s]",$szmap{$sz},$self->{label};
} else {
}
sub out {
my $self = shift;
- if (!$win64) { sprintf "%s%%%s",$self->{asterisk},$self->{value}; }
+ if ($gas) { sprintf "%s%%%s",$self->{asterisk},$self->{value}; }
else { $self->{value}; }
}
}
local *line = shift;
undef $ret;
- if ($line =~ /(^[\.\w]+\:)/) {
+ if ($line =~ /(^[\.\w]+)\:/) {
$self->{value} = $1;
$ret = $self;
$line = substr($line,@+[0]); $line =~ s/^\s+//;
- $self->{value} =~ s/\.L/\$L\$/ if ($win64);
+ $self->{value} =~ s/^\.L/$decor/;
}
$ret;
}
sub out {
my $self = shift;
- if (!$win64) {
- $self->{value};
- } elsif ($self->{value} ne "$current_function->{name}:") {
+ if ($gas) {
+ my $func = ($globals{$self->{value}} or $self->{value}) . ":";
+ if ($win64 &&
+ $current_function->{name} eq $self->{value} &&
+ $current_function->{abi} eq "svr4") {
+ $func .= "\n";
+ $func .= " movq %rdi,8(%rsp)\n";
+ $func .= " movq %rsi,16(%rsp)\n";
+ $func .= " movq %rsp,%rax\n";
+ $func .= "${decor}SEH_begin_$current_function->{name}:\n";
+ my $narg = $current_function->{narg};
+ $narg=6 if (!defined($narg));
+ $func .= " movq %rcx,%rdi\n" if ($narg>0);
+ $func .= " movq %rdx,%rsi\n" if ($narg>1);
+ $func .= " movq %r8,%rdx\n" if ($narg>2);
+ $func .= " movq %r9,%rcx\n" if ($narg>3);
+ $func .= " movq 40(%rsp),%r8\n" if ($narg>4);
+ $func .= " movq 48(%rsp),%r9\n" if ($narg>5);
+ }
+ $func;
+ } elsif ($self->{value} ne "$current_function->{name}") {
$self->{value} .= ":" if ($masm && $ret!~m/^\$/);
- $self->{value};
- } elsif ($current_function->{abi} eq "svr4") {
+ $self->{value} . ":";
+ } elsif ($win64 && $current_function->{abi} eq "svr4") {
my $func = "$current_function->{name}" .
($nasm ? ":" : "\tPROC $current_function->{scope}") .
"\n";
$func .= " mov QWORD${PTR}[8+rsp],rdi\t;WIN64 prologue\n";
$func .= " mov QWORD${PTR}[16+rsp],rsi\n";
$func .= " mov rax,rsp\n";
- $func .= "\$L\$SEH_begin_$current_function->{name}:";
+ $func .= "${decor}SEH_begin_$current_function->{name}:";
$func .= ":" if ($masm);
$func .= "\n";
my $narg = $current_function->{narg};
$ret = $self;
$line = substr($line,@+[0]); $line =~ s/^\s+//;
- $self->{value} =~ s/\.L/\$L\$/g if ($win64);
+ $self->{value} =~ s/\@PLT// if (!$elf);
+ $self->{value} =~ s/([_a-z][_a-z0-9]*)/$globals{$1} or $1/gei;
+ $self->{value} =~ s/\.L/$decor/g;
}
$ret;
}
sub out {
my $self = shift;
- if ($nasm && opcode->mnemonic()=~m/^j/) {
+ if ($nasm && opcode->mnemonic()=~m/^j(?![re]cxz)/) {
"NEAR ".$self->{value};
} else {
$self->{value};
"%r14"=>0x01358d4c, "%r15"=>0x013d8d4c );
if ($line =~ /^\s*(\.\w+)/) {
- if (!$win64) {
- $self->{value} = $1;
- $line =~ s/\@abi\-omnipotent/\@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/) {
+ $dir = $1;
+ $ret = $self;
+ undef $self->{value};
+ $line = substr($line,@+[0]); $line =~ s/^\s+//;
+
+ SWITCH: for ($dir) {
+ /\.picmeup/ && do { if ($line =~ /(%r[\w]+)/i) {
+ $dir="\t.long";
+ $line=sprintf "0x%x,0x90000000",$opcode{$1};
+ }
+ last;
+ };
+ /\.global|\.globl|\.extern/
+ && do { $globals{$line} = $prefix . $line;
+ $line = $globals{$line} if ($prefix);
+ last;
+ };
+ /\.type/ && do { ($sym,$type,$narg) = split(',',$line);
+ if ($type eq "\@function") {
+ undef $current_function;
+ $current_function->{name} = $sym;
+ $current_function->{abi} = "svr4";
+ $current_function->{narg} = $narg;
+ $current_function->{scope} = defined($globals{$sym})?"PUBLIC":"PRIVATE";
+ } elsif ($type eq "\@abi-omnipotent") {
+ undef $current_function;
+ $current_function->{name} = $sym;
+ $current_function->{scope} = defined($globals{$sym})?"PUBLIC":"PRIVATE";
+ }
+ $line =~ s/\@abi\-omnipotent/\@function/;
+ $line =~ s/\@function.*/\@function/;
+ last;
+ };
+ /\.asciz/ && do { if ($line =~ /^"(.*)"$/) {
+ $dir = ".byte";
+ $line = join(",",unpack("C*",$1),0);
+ }
+ last;
+ };
+ /\.rva|\.long|\.quad/
+ && do { $line =~ s/([_a-z][_a-z0-9]*)/$globals{$1} or $1/gei;
+ $line =~ s/\.L/$decor/g;
+ last;
+ };
+ }
+
+ if ($gas) {
+ $self->{value} = $dir . "\t" . $line;
+
+ if ($dir =~ /\.extern/) {
$self->{value} = ""; # swallow extern
- } else {
- $self->{value} = $line;
+ } elsif (!$elf && $dir =~ /\.type/) {
+ $self->{value} = "";
+ $self->{value} = ".def\t" . ($globals{$1} or $1) . ";\t" .
+ (defined($globals{$1})?".scl 2;":".scl 3;") .
+ "\t.type 32;\t.endef"
+ if ($win64 && $line =~ /([^,]+),\@function/);
+ } elsif (!$elf && $dir =~ /\.size/) {
+ $self->{value} = "";
+ if (defined($current_function)) {
+ $self->{value} .= "${decor}SEH_end_$current_function->{name}:"
+ if ($win64 && $current_function->{abi} eq "svr4");
+ undef $current_function;
+ }
+ } elsif (!$elf && $dir =~ /\.align/) {
+ $self->{value} = ".p2align\t" . (log($line)/log(2));
+ } elsif ($dir eq ".section") {
+ $current_segment=$line;
+ if (!$elf && $current_segment eq ".init") {
+ if ($flavour eq "macosx") { $self->{value} = ".mod_init_func"; }
+ elsif ($flavour eq "mingw64") { $self->{value} = ".section\t.ctors"; }
+ }
+ } elsif ($dir =~ /\.(text|data)/) {
+ $current_segment=".$1";
+ } elsif ($dir =~ /\.hidden/) {
+ if ($flavour eq "macosx") { $self->{value} = ".private_extern\t$prefix$line"; }
+ elsif ($flavour eq "mingw64") { $self->{value} = ""; }
+ } elsif ($dir =~ /\.comm/) {
+ $self->{value} = "$dir\t$prefix$line";
+ $self->{value} =~ s|,([0-9]+),([0-9]+)$|",$1,".log($2)/log(2)|e if ($flavour eq "macosx");
}
$line = "";
return $self;
}
- $dir = $1;
- $ret = $self;
- undef $self->{value};
- $line = substr($line,@+[0]); $line =~ s/^\s+//;
+ # non-gas case or nasm/masm
SWITCH: for ($dir) {
/\.text/ && do { my $v=undef;
if ($nasm) {
$v="$current_segment\tENDS\n" if ($current_segment);
$current_segment = ".text\$";
$v.="$current_segment\tSEGMENT ";
- $v.=$masm>=$masmref ? "ALIGN(64)" : "PAGE";
+ $v.=$masm>=$masmref ? "ALIGN(256)" : "PAGE";
$v.=" 'CODE'";
}
$self->{value} = $v;
last;
};
/\.section/ && do { my $v=undef;
+ $line =~ s/([^,]*).*/$1/;
+ $line = ".CRT\$XCU" if ($line eq ".init");
if ($nasm) {
$v="section $line";
if ($line=~/\.([px])data/) {
$v.=" rdata align=";
$v.=$1 eq "p"? 4 : 8;
+ } elsif ($line=~/\.CRT\$/i) {
+ $v.=" rdata align=8";
}
} else {
$v="$current_segment\tENDS\n" if ($current_segment);
if ($line=~/\.([px])data/) {
$v.=" READONLY";
$v.=" ALIGN(".($1 eq "p" ? 4 : 8).")" if ($masm>=$masmref);
+ } elsif ($line=~/\.CRT\$/i) {
+ $v.=" READONLY ";
+ $v.=$masm>=$masmref ? "ALIGN(8)" : "DWORD";
}
}
$current_segment = $line;
/\.globl|.global/
&& do { $self->{value} = $masm?"PUBLIC":"global";
$self->{value} .= "\t".$line;
- $globals{$line} = $line;
- last;
- };
- /\.type/ && do { ($sym,$type,$narg) = split(',',$line);
- if ($type eq "\@function") {
- undef $current_function;
- $current_function->{name} = $sym;
- $current_function->{abi} = "svr4";
- $current_function->{narg} = $narg;
- $current_function->{scope} = defined($globals{$sym})?"PUBLIC":"PRIVATE";
- } elsif ($type eq "\@abi-omnipotent") {
- undef $current_function;
- $current_function->{name} = $sym;
- $current_function->{scope} = defined($globals{$sym})?"PUBLIC":"PRIVATE";
- }
last;
};
/\.size/ && do { if (defined($current_function)) {
- $self->{value}="\$L\$SEH_end_$current_function->{name}:";
- $self->{value}.=":\n$current_function->{name}\tENDP" if($masm);
+ undef $self->{value};
+ if ($current_function->{abi} eq "svr4") {
+ $self->{value}="${decor}SEH_end_$current_function->{name}:";
+ $self->{value}.=":\n" if($masm);
+ }
+ $self->{value}.="$current_function->{name}\tENDP" if($masm && $current_function->{name});
undef $current_function;
}
last;
};
/\.align/ && do { $self->{value} = "ALIGN\t".$line; last; };
- /\.(byte|value|long|quad)/
+ /\.(value|long|rva|quad)/
&& do { my $sz = substr($1,0,1);
- my @arr = split(',',$line);
+ my @arr = split(/,\s*/,$line);
my $last = pop(@arr);
my $conv = sub { my $var=shift;
- $var=~s/0x([0-9a-f]+)/0$1h/ig;
- $var=~s/\.L/\$L\$/g;
- if ($current_segment=~/.[px]data/)
+ $var=~s/^(0b[0-1]+)/oct($1)/eig;
+ $var=~s/^0x([0-9a-f]+)/0$1h/ig if ($masm);
+ if ($sz eq "D" && ($current_segment=~/.[px]data/ || $dir eq ".rva"))
{ $var=~s/([_a-z\$\@][_a-z0-9\$\@]*)/$nasm?"$1 wrt ..imagebase":"imagerel $1"/egi; }
$var;
};
- $sz =~ tr/bvlq/BWDQ/;
+ $sz =~ tr/bvlrq/BWDDQ/;
$self->{value} = "\tD$sz\t";
for (@arr) { $self->{value} .= &$conv($_).","; }
$self->{value} .= &$conv($last);
last;
};
- /\.picmeup/ && do { $self->{value} = sprintf"\tDD\t0%Xh,090000000h",$opcode{$line};
- last;
- };
- /\.asciz/ && do { if ($line =~ /^"(.*)"$/) {
- my @str=unpack("C*",$1);
- push @str,0;
- while ($#str>15) {
- $self->{value}.="DB\t"
- .join(",",@str[0..15])."\n";
- foreach (0..15) { shift @str; }
- }
+ /\.byte/ && do { my @str=split(/,\s*/,$line);
+ map(s/(0b[0-1]+)/oct($1)/eig,@str);
+ map(s/0x([0-9a-f]+)/0$1h/ig,@str) if ($masm);
+ while ($#str>15) {
$self->{value}.="DB\t"
+ .join(",",@str[0..15])."\n";
+ foreach (0..15) { shift @str; }
+ }
+ $self->{value}.="DB\t"
.join(",",@str) if (@str);
+ last;
+ };
+ /\.comm/ && do { my @str=split(/,\s*/,$line);
+ my $v=undef;
+ if ($nasm) {
+ $v.="common $prefix@str[0] @str[1]";
+ } else {
+ $v="$current_segment\tENDS\n" if ($current_segment);
+ $current_segment = "_DATA";
+ $v.="$current_segment\tSEGMENT\n";
+ $v.="COMM @str[0]:DWORD:".@str[1]/4;
}
+ $self->{value} = $v;
last;
};
}
}
}
+sub rex {
+ local *opcode=shift;
+ my ($dst,$src,$rex)=@_;
+
+ $rex|=0x04 if($dst>=8);
+ $rex|=0x01 if($src>=8);
+ push @opcode,($rex|0x40) if ($rex);
+}
+
+# older gas and ml64 don't handle SSE>2 instructions
+my %regrm = ( "%eax"=>0, "%ecx"=>1, "%edx"=>2, "%ebx"=>3,
+ "%esp"=>4, "%ebp"=>5, "%esi"=>6, "%edi"=>7 );
+
+my $movq = sub { # elderly gas can't handle inter-register movq
+ my $arg = shift;
+ my @opcode=(0x66);
+ if ($arg =~ /%xmm([0-9]+),\s*%r(\w+)/) {
+ my ($src,$dst)=($1,$2);
+ if ($dst !~ /[0-9]+/) { $dst = $regrm{"%e$dst"}; }
+ rex(\@opcode,$src,$dst,0x8);
+ push @opcode,0x0f,0x7e;
+ push @opcode,0xc0|(($src&7)<<3)|($dst&7); # ModR/M
+ @opcode;
+ } elsif ($arg =~ /%r(\w+),\s*%xmm([0-9]+)/) {
+ my ($src,$dst)=($2,$1);
+ if ($dst !~ /[0-9]+/) { $dst = $regrm{"%e$dst"}; }
+ rex(\@opcode,$src,$dst,0x8);
+ push @opcode,0x0f,0x6e;
+ push @opcode,0xc0|(($src&7)<<3)|($dst&7); # ModR/M
+ @opcode;
+ } else {
+ ();
+ }
+};
+
+my $pextrd = sub {
+ if (shift =~ /\$([0-9]+),\s*%xmm([0-9]+),\s*(%\w+)/) {
+ my @opcode=(0x66);
+ $imm=$1;
+ $src=$2;
+ $dst=$3;
+ if ($dst =~ /%r([0-9]+)d/) { $dst = $1; }
+ elsif ($dst =~ /%e/) { $dst = $regrm{$dst}; }
+ rex(\@opcode,$src,$dst);
+ push @opcode,0x0f,0x3a,0x16;
+ push @opcode,0xc0|(($src&7)<<3)|($dst&7); # ModR/M
+ push @opcode,$imm;
+ @opcode;
+ } else {
+ ();
+ }
+};
+
+my $pinsrd = sub {
+ if (shift =~ /\$([0-9]+),\s*(%\w+),\s*%xmm([0-9]+)/) {
+ my @opcode=(0x66);
+ $imm=$1;
+ $src=$2;
+ $dst=$3;
+ if ($src =~ /%r([0-9]+)/) { $src = $1; }
+ elsif ($src =~ /%e/) { $src = $regrm{$src}; }
+ rex(\@opcode,$dst,$src);
+ push @opcode,0x0f,0x3a,0x22;
+ push @opcode,0xc0|(($dst&7)<<3)|($src&7); # ModR/M
+ push @opcode,$imm;
+ @opcode;
+ } else {
+ ();
+ }
+};
+
+my $pshufb = sub {
+ if (shift =~ /%xmm([0-9]+),\s*%xmm([0-9]+)/) {
+ my @opcode=(0x66);
+ rex(\@opcode,$2,$1);
+ push @opcode,0x0f,0x38,0x00;
+ push @opcode,0xc0|($1&7)|(($2&7)<<3); # ModR/M
+ @opcode;
+ } else {
+ ();
+ }
+};
+
+my $palignr = sub {
+ if (shift =~ /\$([0-9]+),\s*%xmm([0-9]+),\s*%xmm([0-9]+)/) {
+ my @opcode=(0x66);
+ rex(\@opcode,$3,$2);
+ push @opcode,0x0f,0x3a,0x0f;
+ push @opcode,0xc0|($2&7)|(($3&7)<<3); # ModR/M
+ push @opcode,$1;
+ @opcode;
+ } else {
+ ();
+ }
+};
+
+my $pclmulqdq = sub {
+ if (shift =~ /\$([x0-9a-f]+),\s*%xmm([0-9]+),\s*%xmm([0-9]+)/) {
+ my @opcode=(0x66);
+ rex(\@opcode,$3,$2);
+ push @opcode,0x0f,0x3a,0x44;
+ push @opcode,0xc0|($2&7)|(($3&7)<<3); # ModR/M
+ my $c=$1;
+ push @opcode,$c=~/^0/?oct($c):$c;
+ @opcode;
+ } else {
+ ();
+ }
+};
+
+my $rdrand = sub {
+ if (shift =~ /%[er](\w+)/) {
+ my @opcode=();
+ my $dst=$1;
+ if ($dst !~ /[0-9]+/) { $dst = $regrm{"%e$dst"}; }
+ rex(\@opcode,0,$1,8);
+ push @opcode,0x0f,0xc7,0xf0|($dst&7);
+ @opcode;
+ } else {
+ ();
+ }
+};
+
+my $rdseed = sub {
+ if (shift =~ /%[er](\w+)/) {
+ my @opcode=();
+ my $dst=$1;
+ if ($dst !~ /[0-9]+/) { $dst = $regrm{"%e$dst"}; }
+ rex(\@opcode,0,$1,8);
+ push @opcode,0x0f,0xc7,0xf8|($dst&7);
+ @opcode;
+ } else {
+ ();
+ }
+};
+
+sub rxb {
+ local *opcode=shift;
+ my ($dst,$src1,$src2,$rxb)=@_;
+
+ $rxb|=0x7<<5;
+ $rxb&=~(0x04<<5) if($dst>=8);
+ $rxb&=~(0x01<<5) if($src1>=8);
+ $rxb&=~(0x02<<5) if($src2>=8);
+ push @opcode,$rxb;
+}
+
+my $vprotd = sub {
+ if (shift =~ /\$([x0-9a-f]+),\s*%xmm([0-9]+),\s*%xmm([0-9]+)/) {
+ my @opcode=(0x8f);
+ rxb(\@opcode,$3,$2,-1,0x08);
+ push @opcode,0x78,0xc2;
+ push @opcode,0xc0|($2&7)|(($3&7)<<3); # ModR/M
+ my $c=$1;
+ push @opcode,$c=~/^0/?oct($c):$c;
+ @opcode;
+ } else {
+ ();
+ }
+};
+
+my $vprotq = sub {
+ if (shift =~ /\$([x0-9a-f]+),\s*%xmm([0-9]+),\s*%xmm([0-9]+)/) {
+ my @opcode=(0x8f);
+ rxb(\@opcode,$3,$2,-1,0x08);
+ push @opcode,0x78,0xc3;
+ push @opcode,0xc0|($2&7)|(($3&7)<<3); # ModR/M
+ my $c=$1;
+ push @opcode,$c=~/^0/?oct($c):$c;
+ @opcode;
+ } else {
+ ();
+ }
+};
+
if ($nasm) {
print <<___;
default rel
+%define XMMWORD
+%define YMMWORD
+%define ZMMWORD
___
} elsif ($masm) {
print <<___;
$line =~ s|[#!].*$||; # get rid of asm-style comments...
$line =~ s|/\*.*\*/||; # ... and C-style comments...
$line =~ s|^\s+||; # ... and skip white spaces in beginning
+ $line =~ s|\s+$||; # ... and at the end
undef $label;
undef $opcode;
- undef $dst;
- undef $src;
- undef $sz;
+ undef @args;
if ($label=label->re(\$line)) { print $label->out(); }
if (directive->re(\$line)) {
printf "%s",directive->out();
- } elsif ($opcode=opcode->re(\$line)) { ARGUMENT: {
+ } elsif ($opcode=opcode->re(\$line)) {
+ my $asm = eval("\$".$opcode->mnemonic());
+ undef @bytes;
+
+ if ((ref($asm) eq 'CODE') && scalar(@bytes=&$asm($line))) {
+ print $gas?".byte\t":"DB\t",join(',',@bytes),"\n";
+ next;
+ }
- if ($src=register->re(\$line)) { opcode->size($src->size()); }
- elsif ($src=const->re(\$line)) { }
- elsif ($src=ea->re(\$line)) { }
- elsif ($src=expr->re(\$line)) { }
+ ARGUMENT: while (1) {
+ my $arg;
- last ARGUMENT if ($line !~ /^,/);
+ if ($arg=register->re(\$line)) { opcode->size($arg->size()); }
+ elsif ($arg=const->re(\$line)) { }
+ elsif ($arg=ea->re(\$line)) { }
+ elsif ($arg=expr->re(\$line)) { }
+ else { last ARGUMENT; }
- $line = substr($line,1); $line =~ s/^\s+//;
+ push @args,$arg;
- if ($dst=register->re(\$line)) { opcode->size($dst->size()); }
- elsif ($dst=const->re(\$line)) { }
- elsif ($dst=ea->re(\$line)) { }
+ last ARGUMENT if ($line !~ /^,/);
+ $line =~ s/^,\s*//;
} # ARGUMENT:
- $sz=opcode->size();
+ if ($#args>=0) {
+ my $insn;
+ my $sz=opcode->size();
- if (defined($dst)) {
- if (!$win64) {
- printf "\t%s\t%s,%s", $opcode->out($dst->size()),
- $src->out($sz),$dst->out($sz);
+ if ($gas) {
+ $insn = $opcode->out($#args>=1?$args[$#args]->size():$sz);
+ @args = map($_->out($sz),@args);
+ printf "\t%s\t%s",$insn,join(",",@args);
} else {
+ $insn = $opcode->out();
+ foreach (@args) {
+ my $arg = $_->out();
+ # $insn.=$sz compensates for movq, pinsrw, ...
+ if ($arg =~ /^xmm[0-9]+$/) { $insn.=$sz; $sz="x" if(!$sz); last; }
+ if ($arg =~ /^ymm[0-9]+$/) { $insn.=$sz; $sz="y" if(!$sz); last; }
+ if ($arg =~ /^zmm[0-9]+$/) { $insn.=$sz; $sz="z" if(!$sz); last; }
+ if ($arg =~ /^mm[0-9]+$/) { $insn.=$sz; $sz="q" if(!$sz); last; }
+ }
+ @args = reverse(@args);
undef $sz if ($nasm && $opcode->mnemonic() eq "lea");
- printf "\t%s\t%s,%s", $opcode->out(),
- $dst->out($sz),$src->out($sz);
+ printf "\t%s\t%s",$insn,join(",",map($_->out($sz),@args));
}
- } elsif (defined($src)) {
- printf "\t%s\t%s",$opcode->out(),$src->out($sz);
} else {
printf "\t%s",$opcode->out();
}
print $line,"\n";
}
-print "\n$current_segment\tENDS\nEND\n" if ($current_segment && $masm);
+print "\n$current_segment\tENDS\n" if ($current_segment && $masm);
+print "END\n" if ($masm);
close STDOUT;
# CONTEXT.R14 232
# CONTEXT.R15 240
# CONTEXT.Rip 248
+# CONTEXT.Xmm6 512
# sizeof(CONTEXT) 1232
# DISPATCHER_CONTEXT.ControlPc 0
# DISPATCHER_CONTEXT.ImageBase 8
#
# function_unwind_info:
# .byte 9,0,0,0
-# .long handler
+# .rva handler
#
# This structure designates exception handler for a function with
# zero-length prologue, no stack frame or frame register.
#
# To facilitate composing of .pdata structures, auto-generated "gear"
# prologue copies rsp value to rax and denotes next instruction with
-# $L$SEH_begin_{function_name} label. This essentially defines the SEH
+# .LSEH_begin_{function_name} label. This essentially defines the SEH
# styling rule mentioned in the beginning. Position of this label is
# chosen in such manner that possible exceptions raised in the "gear"
# prologue would be accounted to caller and unwound from latter's frame.
-# End of function is marked with respective $L$SEH_end_{function_name}
+# End of function is marked with respective .LSEH_end_{function_name}
# label. To summarize, .pdata segment would contain
#
-# .long $L$SEH_begin_function
-# .long $L$SEH_end_function
-# .long function_unwind_info
+# .rva .LSEH_begin_function
+# .rva .LSEH_end_function
+# .rva function_unwind_info
#
-# Reference to functon_unwind_info from .xdata segment is the anchor.
-# In case you wonder why references are 32-bit .longs and not 64-bit
+# Reference to function_unwind_info from .xdata segment is the anchor.
+# In case you wonder why references are 32-bit .rvas and not 64-bit
# .quads. References put into these two segments are required to be
# *relative* to the base address of the current binary module, a.k.a.
# image base. No Win64 module, be it .exe or .dll, can be larger than
projects / openssl.git / blobdiff