[project @ 2002-06-07 09:40:05 by matthewc]
[ghc-hetmet.git] / ghc / driver / mangler / ghc-asm.lprl
index a3504d3..4dc5b49 100644 (file)
@@ -213,6 +213,34 @@ sub init_TARGET_STUFF {
     $T_create_word  = "\t.word";
 
     #--------------------------------------------------------#
+    } elsif ( $TargetPlatform =~ /^ia64-.*-linux$/ ) {
+
+    $T_STABBY       = 0; # 1 iff .stab things (usually if a.out format)
+    $T_US           = ''; # _ if symbols have an underscore on the front
+    $T_PRE_APP      = '#';
+    $T_CONST_LBL    = '^\.LC(\d+):$'; # regexp for what such a lbl looks like
+    $T_POST_LBL     = ':';
+
+    $T_MOVE_DIRVS   = '^(\s*\.(global|proc|pred\.safe_across_calls|text|data|section|align|size|type|ident)\s+.*\n)';
+    $T_COPY_DIRVS   = '\.(global|proc)';
+
+    $T_hsc_cc_PAT   = '\.string.*\)(hsc|cc) (.*)\\\\t(.*)"';
+    $T_DOT_WORD     = '\.(long|value|byte|zero)';
+    $T_DOT_GLOBAL   = '\.global';
+    $T_HDR_literal  = "\.section\t\.rodata\n";
+    $T_HDR_misc     = "\.text\n\t\.align 8\n";
+    $T_HDR_data     = "\.data\n\t\.align 8\n";
+    $T_HDR_consist  = "\.text\n";
+    $T_HDR_closure  = "\.data\n\t\.align 8\n";
+    $T_HDR_srt      = "\.text\n\t\.align 8\n";
+    $T_HDR_info     = "\.text\n\t\.align 8\n";
+    $T_HDR_entry    = "\.text\n\t\.align 16\n";
+    $T_HDR_fast     = "\.text\n\t\.align 16\n";
+    $T_HDR_vector   = "\.text\n\t\.align 8\n";
+    $T_HDR_direct   = "\.text\n\t\.align 8\n";
+    $T_create_word  = "\t.word";
+
+    #--------------------------------------------------------#
     } elsif ( $TargetPlatform =~ /^m68k-.*-sunos4/ ) {
 
     $T_STABBY      = 1; # 1 iff .stab things (usually if a.out format)
@@ -437,7 +465,7 @@ sub mangle_asm {
        next if /${T_PRE_APP}(NO_)?APP/o; 
        next if /^;/ && $TargetPlatform =~ /^hppa/;
 
-       next if /(^$|^\t\.file\t|^ # )/ && $TargetPlatform =~ /^(mips)-/;
+       next if /(^$|^\t\.file\t|^ # )/ && $TargetPlatform =~ /^(mips|ia64)-/;
 
        if ( $TargetPlatform =~ /^mips-/ 
          && /^\t\.(globl\S+\.text|comm\t)/ ) {
@@ -657,19 +685,41 @@ sub mangle_asm {
 
        # toss all prologue stuff; HPPA is pretty weird
        # (see elsewhere)
-       $c = &mash_hppa_prologue($c) if $TargetPlatform =~ /^hppa/;
+       $c = &hppa_mash_prologue($c) if $TargetPlatform =~ /^hppa-/;
 
        # be slightly paranoid to make sure there's
        # nothing surprising in there
        if ( $c =~ /--- BEGIN ---/ ) {
            if (($p, $r) = split(/--- BEGIN ---/, $c)) {
 
+               # remove junk whitespace around the split point
+               $p =~ s/\t+$//;
+               $r =~ s/^\s*\n//;
+
                if ($TargetPlatform =~ /^i386-/) {
                    $p =~ s/^\tpushl\s+\%edi\n//;
                    $p =~ s/^\tpushl\s+\%esi\n//;
                    $p =~ s/^\tpushl\s+\%ebx\n//;
                    $p =~ s/^\tsubl\s+\$\d+,\s*\%esp\n//;
                     $p =~ s/^\tmovl\s+\$\d+,\s*\%eax\n\tcall\s+__alloca\n// if ($TargetPlatform =~ /^.*-cygwin32/);
+
+                   # GCC 3.1 is in the habit of adding spurious writes to the
+                   # stack in the prologue.  Just to be on the safe side,
+                   # chuck these over the fence into the main code.
+                   while ($p =~ /^\tmovl\s+(\$\d+|\%edi),\s*\d*\(\%esp\)\n/) {
+                         # print "Spurious instruction: $&";
+                         $p = $` . $';
+                         $r = $& . $r;
+                   }
+
+               } elsif ($TargetPlatform =~ /^ia64-/) {
+                   $p =~ s/^\t\.prologue .*\n//;
+                   $p =~ s/^\t\.save ar\.pfs, r\d+\n\talloc r\d+ = ar\.pfs, 0, 31, \d+, 0\n//;
+                   $p =~ s/^\t\.fframe \d+\n\tadds r12 = -\d+, r12\n//;
+                   $p =~ s/^\t\.save rp, r\d+\n\tmov r\d+ = b0\n//;
+                   $p =~ s/^\t\.(mii|mmi)\n//; # bundling is no longer sensible
+                   $p =~ s/^\t;;\n//g;         # discard stops
+                   $p =~ s/^\t\/\/.*\n//g;     # gcc inserts timings in // comments
                } elsif ($TargetPlatform =~ /^m68k-/) {
                    $p =~ s/^\tlink a6,#-?\d.*\n//;
                    $p =~ s/^\tpea a6@\n\tmovel sp,a6\n//;    
@@ -694,33 +744,39 @@ sub mangle_asm {
                    $p =~ s/^\tsw\t\$28,\d+\(\$sp\)\n//;
                    $p =~ s/__FRAME__/$FRAME/;
                } elsif ($TargetPlatform =~ /^powerpc-apple-.*/) {
-                   $p =~ s/^\tmflr r0\n//;
+                   $pcrel_label = $p;
+                   $pcrel_label =~ s/(.|\n)*^(L\d+\$pb):\n(.|\n)*/$2/ or $pcrel_label = "";
+
+                   $p =~ s/^\tmflr r0\n//;
                    $p =~ s/^\tbl saveFP # f\d+\n//;
+                   $p =~ s/^\tbl saveFP ; save f\d+-f\d+\n//;
+                   $p =~ s/^L\d+\$pb:\n//;
                    $p =~ s/^\tstmw r\d+,-\d+\(r1\)\n//;
                    $p =~ s/^\tstfd f\d+,-\d+\(r1\)\n//g;
                    $p =~ s/^\tstw r0,\d+\(r1\)\n//g;
                    $p =~ s/^\tstwu r1,-\d+\(r1\)\n//; 
                    $p =~ s/^\tstw r\d+,-\d+\(r1\)\n//g; 
+                   $p =~ s/^\tbcl 20,31,L\d+\$pb\n//;
+                   $p =~ s/^L\d+\$pb:\n//;
+                   $p =~ s/^\tmflr r31\n//;
                } else {
                    print STDERR "$Pgm: unknown prologue mangling? $TargetPlatform\n";
                }
-
-               if ($TargetPlatform =~ /^powerpc-apple-.*/) {
-                       # on PowerPC, we have to keep a part of the prologue
-                       # (which loads the current instruction pointer into register r31)
-                   $u_p = $p;  # $u_p is for unexpected prologue
-                   $u_p =~ s/^\tbcl 20,31,L\d+\$pb\n//;
-                   $u_p =~ s/^L\d+\$pb:\n//;
-                   $u_p =~ s/^\tmflr r31\n//;
-                   die "Prologue junk?: $u_p\n" if $u_p =~ /^\t[^\.]/
-               } else {
-                   # HWL HACK: dont die, just print a warning
-                   #print stderr  "HWL: this should die! Prologue junk?: $p\n" if $p =~ /^\t[^\.]/;
-                   die "Prologue junk?: $p\n" if $p =~ /^\t[^\.]/;
+               
+               # HWL HACK: dont die, just print a warning
+               #print stderr  "HWL: this should die! Prologue junk?: $p\n" if $p =~ /^\t[^\.]/;
+               die "Prologue junk?: $p\n" if $p =~ /^\t[^\.]/;
+               
+               if ($TargetPlatform =~ /^powerpc-apple-.*/ && $pcrel_label ne "") {
+                   # on PowerPC, we have to keep a part of the prologue
+                   # (which loads the current instruction pointer into register r31)
+                   $p .= "bcl 20,31,$pcrel_label\n";
+                   $p .= "$pcrel_label:\n";
+                   $p .= "\tmflr r31";
                }
+               
                # glue together what's left
                $c = $p . $r;
-               $c =~ s/\n\t\n/\n/; # junk blank line
            }
        }
 
@@ -740,6 +796,14 @@ sub mangle_asm {
                    $e =~ s/^\tpopl\s+\%ecx\n//;
                    $e =~ s/^\taddl\s+\$\d+,\s*\%esp\n//;
                    $e =~ s/^\tsubl\s+\$-\d+,\s*\%esp\n//;
+               } elsif ($TargetPlatform =~ /^ia64-/) {
+                   $e =~ s/^\tmov ar\.pfs = r\d+\n//;
+                   $e =~ s/^\tmov b0 = r\d+\n//;
+                   $e =~ s/^\t\.restore sp\n\tadds r12 = \d+, r12\n//;
+                   $e =~ s/^\tbr\.ret\.sptk\.many b0\n//;
+                   $e =~ s/^\t\.(mii|mmi|mib)\n//g;    # bundling is no longer sensible
+                   $e =~ s/^\t;;\n//g;                 # discard stops - stop at end of body is sufficient
+                   $e =~ s/^\t\/\/.*\n//g;             # gcc inserts timings in // comments
                } elsif ($TargetPlatform =~ /^m68k-/) {
                    $e =~ s/^\tunlk a6\n//;
                    $e =~ s/^\trts\n//;
@@ -781,6 +845,10 @@ sub mangle_asm {
        $c =~ s/^\t(call|jbsr|jal)\s+${T_US}__DISCARD__\n//go;
        $c =~ s/^\tbl\s+L___DISCARD__\$stub\n//go if $TargetPlatform =~ /^powerpc-apple-.*/;
 
+       # IA64: mangle tailcalls into jumps here
+       $c =~ s/^\tbr\.call\.sptk\.many b0 = (.*)\n\t;;\n(\tmov r1 = r\d+\n)?\t;;\n\t--- TAILCALL ---\n/\tbr\.few $1\n/g
+               if $TargetPlatform =~ /^ia64-/;
+
        # MIPS: that may leave some gratuitous asm macros around
        # (no harm done; but we get rid of them to be tidier)
        $c =~ s/^\t\.set\tnoreorder\n\t\.set\tnomacro\n\taddu\t(\S+)\n\t\.set\tmacro\n\t\.set\treorder\n/\taddu\t$1\n/
@@ -1029,6 +1097,9 @@ sub mangle_asm {
                        # The next two only apply if we're not stealing %esi or %edi.
                        $c =~ s/^\tmovl\s+\$${T_US}${symb}_fast\d*,\s*\%esi\n\tjmp\s+\*\%esi\n// if ($StolenX86Regs < 3);
                        $c =~ s/^\tmovl\s+\$${T_US}${symb}_fast\d*,\s*\%edi\n\tjmp\s+\*\%edi\n// if ($StolenX86Regs < 4);
+                   } elsif ( $TargetPlatform =~ /^ia64-/ ) {
+                       #$c =~ s/^\tbr\.few ${symb}_fast\d*#\n\t;;\n(\t;;\n\t\.endp ${symb}_entry#\n)/$1/;
+                       $c =~ s/^\tbr\.few ${symb}_fast\d*#\n(\t;;\n\t\.endp ${symb}_entry#\n)/$1/;
                    } elsif ( $TargetPlatform =~ /^mips-/ ) {
                        $c =~ s/^\tjmp \$31,\(\$27\),0\n\t\.align 4\n\t\.end/\t.align 4\n\t.end/;
                    } elsif ( $TargetPlatform =~ /^m68k-/ ) {
@@ -1154,7 +1225,7 @@ sub mangle_asm {
 \end{code}
 
 \begin{code}
-sub mash_hppa_prologue { # OK, epilogue, too
+sub hppa_mash_prologue { # OK, epilogue, too
     local($_) = @_;
 
     # toss all prologue stuff
@@ -1327,6 +1398,8 @@ right after the table itself.  (The code pasting is done elsewhere.)
 sub rev_tbl {
     local($symb, $tbl, $discard1) = @_;
 
+    return ($tbl) if ($TargetPlatform =~ /^ia64-/);
+
     local($before) = '';
     local($label) = '';
     local(@imports) = (); # hppa only