[project @ 2006-01-09 14:25:44 by simonmar]

[ghc-hetmet.git] / ghc / driver / split / ghc-split.lprl

diff --git a/ghc/driver/split/ghc-split.lprl b/ghc/driver/split/ghc-split.lprl
index 1f8acfa..4a9decf 100644 (file)
--- a/ghc/driver/split/ghc-split.lprl
+++ b/ghc/driver/split/ghc-split.lprl
@@ -68,6 +68,18 @@ sub split_asm_file {
          || &tidy_up_and_die(1,"$Pgm:Failed writing ${Tmp_prefix}__${octr}.s\n");
     }
 
+    # Make sure that we still have some output when the input file is empty
+    if ( $octr == 0 ) {
+        $octr = 1;
+       $ofname = "${Tmp_prefix}__${octr}.s";
+       open(OUTF, "> $ofname") || die "$Pgm: can't open output file: $ofname\n";
+
+       print OUTF $prologue_stuff;
+
+       close(OUTF)
+         || &tidy_up_and_die(1,"$Pgm:Failed writing ${Tmp_prefix}__${octr}.s\n");
+    }
+
     $NoOfSplitFiles = $octr;
 
     close(TMPI) || &tidy_up_and_die(1,"Failed reading $asm_file\n");
@@ -209,6 +221,7 @@ sub process_asm_block {
     return(&process_asm_block_m68k($str))  if $TargetPlatform =~ /^m68k-/;
     return(&process_asm_block_sparc($str)) if $TargetPlatform =~ /^sparc-/;
     return(&process_asm_block_iX86($str))  if $TargetPlatform =~ /^i[34]86-/;
+    return(&process_asm_block_x86_64($str))  if $TargetPlatform =~ /^x86_64-/;
     return(&process_asm_block_alpha($str)) if $TargetPlatform =~ /^alpha-/;
     return(&process_asm_block_hppa($str))  if $TargetPlatform =~ /^hppa/;
     return(&process_asm_block_mips($str))   if $TargetPlatform =~ /^mips-/;
@@ -382,6 +395,44 @@ sub process_asm_block_iX86 {
 \end{code}
 
 \begin{code}
+sub process_asm_block_x86_64 {
+    local($str) = @_;
+
+    # remove/record any literal constants defined here
+    # [perl made uglier to work around the perl 5.7/5.8 bug documented at
+    # http://bugs6.perl.org/rt2/Ticket/Display.html?id=1760 and illustrated
+    # by the seg fault of perl -e '("x\n" x 5000) =~ /(.*\n)+/'
+    # -- ccshan 2002-09-05]
+    while ( ($str =~ /(\.?(LC\d+):\n(\t\.(ascii|string).*\n|\s*\.byte.*\n){1,100})/ )) {
+       local($label) = $2;
+       local($body)  = $1;
+       local($prefix, $suffix, $*) = ($`, $', 0);
+
+       &tidy_up_and_die(1,"Local constant label $label already defined!\n")
+           if $LocalConstant{$label};
+
+       while ( $suffix =~ /^((\t\.(ascii|string).*\n|\s*\.byte.*\n){1,100})/ ) {
+           $body .= $1;
+           $suffix = $';
+       }
+       $LocalConstant{$label} = $body;
+       $str = $prefix . $suffix;
+    }
+
+    # inject definitions for any local constants now used herein
+    foreach $k (keys %LocalConstant) {
+       if ( $str =~ /\b$k\b/ ) {
+           $str = $LocalConstant{$k} . $str;
+       }
+    }
+
+   print STDERR "### STRIPPED BLOCK (x86_64):\n$str" if $Dump_asm_splitting_info;
+
+   $str;
+}
+\end{code}
+
+\begin{code}
 sub process_asm_block_hppa {
     local($str) = @_;