perlasm/ppc-xlate.pl: improve linux64le support.

[openssl.git] / crypto / perlasm / ppc-xlate.pl

diff --git a/crypto/perlasm/ppc-xlate.pl b/crypto/perlasm/ppc-xlate.pl
index bedaa99cb46ad064775b82cd9d3a4d4a5dc72a23..57d9ec1610c622d1b38945f921c2767749dc9cbb 100755 (executable)
--- a/crypto/perlasm/ppc-xlate.pl
+++ b/crypto/perlasm/ppc-xlate.pl
@@ -2,12 +2,12 @@
 
 # PowerPC assembler distiller by <appro>.
 
+my $flavour = shift;
 my $output = shift;
 open STDOUT,">$output" || die "can't open $output: $!";
 
-my $flavour = $output;
 my %GLOBALS;
-my $dotinlocallabels=0;
+my $dotinlocallabels=($flavour=~/linux/)?1:0;
 
 ################################################################
 # directives which need special treatment on different platforms
@@ -27,23 +27,20 @@ my $globl = sub {
        /osx/           && do { $name = "_$name";
                                last;
                              };
-       /linux.*32/     && do { $ret .= ".globl $name\n";
+       /linux.*(32|64le)/
+                       && do { $ret .= ".globl $name\n";
                                $ret .= ".type  $name,\@function";
-                               $dotinlocallabels = 1;
                                last;
                              };
-       /linux.*64/     && do { $ret .= ".globl .$name\n";
-                               $ret .= ".type  .$name,\@function\n";
+       /linux.*64/     && do { $ret .= ".globl $name\n";
+                               $ret .= ".type  $name,\@function\n";
                                $ret .= ".section       \".opd\",\"aw\"\n";
-                               $ret .= ".globl $name\n";
                                $ret .= ".align 3\n";
                                $ret .= "$name:\n";
                                $ret .= ".quad  .$name,.TOC.\@tocbase,0\n";
-                               $ret .= ".size  $name,24\n";
                                $ret .= ".previous\n";
 
                                $name = ".$name";
-                               $dotinlocallabels = 1;
                                last;
                              };
     }
@@ -53,7 +50,9 @@ my $globl = sub {
     $ret;
 };
 my $text = sub {
-    ($flavour =~ /aix/) ? ".csect" : ".text";
+    my $ret = ($flavour =~ /aix/) ? ".csect" : ".text";
+    $ret = ".abiversion        2\n".$ret       if ($flavour =~ /linux.*64le/);
+    $ret;
 };
 my $machine = sub {
     my $junk = shift;
@@ -64,6 +63,44 @@ my $machine = sub {
     }
     ".machine  $arch";
 };
+my $size = sub {
+    if ($flavour =~ /linux/)
+    {  shift;
+       my $name = shift; $name =~ s|^[\.\_]||;
+       my $ret  = ".size       $name,.-".($flavour=~/64$/?".":"").$name;
+       $ret .= "\n.size        .$name,.-.$name" if ($flavour=~/64$/);
+       $ret;
+    }
+    else
+    {  "";     }
+};
+my $asciz = sub {
+    shift;
+    my $line = join(",",@_);
+    if ($line =~ /^"(.*)"$/)
+    {  ".byte  " . join(",",unpack("C*",$1),0) . "\n.align     2";     }
+    else
+    {  "";     }
+};
+my $quad = sub {
+    shift;
+    my @ret;
+    my ($hi,$lo);
+    for (@_) {
+       if (/^0x([0-9a-f]*?)([0-9a-f]{1,8})$/io)
+       {  $hi=$1?"0x$1":"0"; $lo="0x$2";  }
+       elsif (/^([0-9]+)$/o)
+       {  $hi=$1>>32; $lo=$1&0xffffffff;  } # error-prone with 32-bit perl
+       else
+       {  $hi=undef; $lo=$_; }
+
+       if (defined($hi))
+       {  push(@ret,$flavour=~/le$/o?".long\t$lo,$hi":".long\t$hi,$lo");  }
+       else
+       {  push(@ret,".quad     $lo");  }
+    }
+    join("\n",@ret);
+};
 
 ################################################################
 # simplified mnemonics not handled by at least one assembler
@@ -78,8 +115,36 @@ my $cmplw = sub {
 };
 my $bdnz = sub {
     my $f = shift;
-    my $bo = $f=~/[\+\-]/ ? 17 : 16;
+    my $bo = $f=~/[\+\-]/ ? 16+9 : 16; # optional "to be taken" hint
     "  bc      $bo,0,".shift;
+} if ($flavour!~/linux/);
+my $bltlr = sub {
+    my $f = shift;
+    my $bo = $f=~/\-/ ? 12+2 : 12;     # optional "not to be taken" hint
+    ($flavour =~ /linux/) ?            # GNU as doesn't allow most recent hints
+       "       .long   ".sprintf "0x%x",19<<26|$bo<<21|16<<1 :
+       "       bclr    $bo,0";
+};
+my $bnelr = sub {
+    my $f = shift;
+    my $bo = $f=~/\-/ ? 4+2 : 4;       # optional "not to be taken" hint
+    ($flavour =~ /linux/) ?            # GNU as doesn't allow most recent hints
+       "       .long   ".sprintf "0x%x",19<<26|$bo<<21|2<<16|16<<1 :
+       "       bclr    $bo,2";
+};
+my $beqlr = sub {
+    my $f = shift;
+    my $bo = $f=~/-/ ? 12+2 : 12;      # optional "not to be taken" hint
+    ($flavour =~ /linux/) ?            # GNU as doesn't allow most recent hints
+       "       .long   ".sprintf "0x%X",19<<26|$bo<<21|2<<16|16<<1 :
+       "       bclr    $bo,2";
+};
+# GNU assembler can't handle extrdi rA,rS,16,48, or when sum of last two
+# arguments is 64, with "operand out of range" error.
+my $extrdi = sub {
+    my ($f,$ra,$rs,$n,$b) = @_;
+    $b = ($b+$n)&63; $n = 64-$n;
+    "  rldicl  $ra,$rs,$b,$n";
 };
 
 while($line=<>) {
@@ -97,7 +162,10 @@ while($line=<>) {
     {
        $line =~ s|(^[\.\w]+)\:\s*||;
        my $label = $1;
-       printf "%s:",($GLOBALS{$label} or $label) if ($label);
+       if ($label) {
+           printf "%s:",($GLOBALS{$label} or $label);
+           printf "\n.localentry\t$GLOBALS{$label},0"  if ($GLOBALS{$label} && $flavour =~ /linux.*64le/);
+       }
     }
 
     {
@@ -106,7 +174,7 @@ while($line=<>) {
        my $mnemonic = $2;
        my $f = $3;
        my $opcode = eval("\$$mnemonic");
-       $line =~ s|\bc?r([0-9]+)\b|$1|g if ($c ne "." and $flavour !~ /osx/);
+       $line =~ s|\bc?[rf]([0-9]+)\b|$1|g if ($c ne "." and $flavour !~ /osx/);
        if (ref($opcode) eq 'CODE') { $line = &$opcode($f,split(',',$line)); }
        elsif ($mnemonic)           { $line = $c.$mnemonic.$f."\t".$line; }
     }