1 %************************************************************************
3 \section[Driver-obj-splitting]{Splitting into many \tr{.o} files (for libraries)}
5 %************************************************************************
8 $TargetPlatform = $TARGETPLATFORM;
10 ($Pgm = $0) =~ s|.*/||;
12 $Tmp_prefix = $ARGV[1];
15 &split_asm_file($ifile);
17 open(OUTPUT, "> $Output") || &tidy_up_and_die(1,"$Pgm: failed to open `$Output' (to write)\n");
18 print OUTPUT "$NoOfSplitFiles\n";
27 local($asm_file) = @_;
29 open(TMPI, "< $asm_file") || &tidy_up_and_die(1,"$Pgm: failed to open `$asm_file' (to read)\n");
31 &collectExports_hppa() if $TargetPlatform =~ /^hppa/;
32 &collectExports_mips() if $TargetPlatform =~ /^mips/;
33 &collectDyldStuff_powerpc_darwin() if $TargetPlatform =~ /^powerpc-apple-darwin/;
35 $octr = 0; # output file counter
36 $* = 1; # multi-line matches are OK
38 %LocalConstant = (); # we have to subvert C compiler's commoning-up of constants...
40 $s_stuff = &ReadTMPIUpToAMarker( '', $octr );
41 # that first stuff is a prologue for all .s outputs
42 $prologue_stuff = &process_asm_block ( $s_stuff );
43 # $_ already has some of the next stuff in it...
45 # &tidy_up_and_die(1,"$Pgm: no split markers in .s file!\n")
46 # if $prologue_stuff eq $s_stuff;
48 # lie about where this stuff came from
49 # Note the \Q: this ignores regex meta-chars in $Tmp_prefix.
50 $prologue_stuff =~ s/\Q"$Tmp_prefix.c"/"$ifile_root.hc"/g;
52 while ( $_ ne '' ) { # not EOF
55 # grab and de-mangle a section of the .s file...
56 $s_stuff = &ReadTMPIUpToAMarker ( $_, $octr );
57 $this_piece = &process_asm_block ( $s_stuff );
59 # output to a file of its own
60 # open a new output file...
61 $ofname = "${Tmp_prefix}__${octr}.s";
62 open(OUTF, "> $ofname") || die "$Pgm: can't open output file: $ofname\n";
64 print OUTF $prologue_stuff;
65 print OUTF $this_piece;
68 || &tidy_up_and_die(1,"$Pgm:Failed writing ${Tmp_prefix}__${octr}.s\n");
71 $NoOfSplitFiles = $octr;
73 close(TMPI) || &tidy_up_and_die(1,"Failed reading $asm_file\n");
76 sub collectExports_hppa { # Note: HP-PA only
78 %LocalExport = (); # NB: global table
81 if (/^\s+\.EXPORT\s+([^,]+),.*\n/) {
83 local($body) = "\t.IMPORT $label";
89 $label =~ s/\$/\\\$/g;
90 $LocalExport{$label} = $body;
97 sub collectExports_mips { # Note: MIPS only
98 # (not really sure this is necessary [WDP 95/05])
100 $UNDEFINED_FUNS = ''; # NB: global table
103 $UNDEFINED_FUNS .= $_ if /^\t\.globl\s+\S+ \.\S+\n/;
110 sub collectDyldStuff_powerpc_darwin {
111 local($chunk_label,$label,$cur_section,$section,$chunk,$alignment,$cur_alignment);
113 %DyldChunks = (); # NB: global table
114 %DyldChunksDefined = (); # NB: global table
125 if ( $_ eq '' || /^L(_.+)\$.+:/ ) {
126 if ( $label ne '' ) {
127 $DyldChunksDefined{$label} .= $section . $alignment . $chunk_label . $ chunk;
128 if( $section =~ s/\.data/\.non_lazy_symbol_pointer/ ) {
129 $chunk = "\t.indirect_symbol $label\n\t.long 0\n";
131 $DyldChunks{$label} .= $section . $alignment . $chunk_label . $chunk;
132 print STDERR "### dyld chunk: $label\n$section$alignment$chunk\n###\n" if $Dump_asm_splitting_info;
139 $section = $cur_section;
140 $alignment = $cur_alignment;
141 print STDERR "label: $label\n" if $Dump_asm_splitting_info;
142 } elsif ( /^\s*\.(symbol_stub|picsymbol_stub|lazy_symbol_pointer|non_lazy_symbol_pointer|data)/ ) {
144 printf STDERR "section: $cur_section\n" if $Dump_asm_splitting_info;
146 } elsif ( /^\s*\.section\s+__TEXT,__symbol_stub1,symbol_stubs,pure_instructions,\d+/ ) {
148 printf STDERR "section: $cur_section\n" if $Dump_asm_splitting_info;
149 # always make sure we align things
150 $cur_alignment = '\t.align 2'
151 } elsif ( /^\s*\.align.*/ ) {
153 printf STDERR "alignment: $cur_alignment\n" if $Dump_asm_splitting_info;
162 sub ReadTMPIUpToAMarker {
163 local($str, $count) = @_; # already read bits
166 for ( $_ = <TMPI>; $_ ne '' && ! /_?__stg_split_marker/; $_ = <TMPI> ) {
169 # if not EOF, then creep forward until next "real" line
170 # (throwing everything away).
171 # that first "real" line will stay in $_.
173 # This loop is intended to pick up the body of the split_marker function
174 # Note that the assembler mangler will already have eliminated this code
175 # if it's been invoked (which it probably has).
177 while ($_ ne '' && (/_?__stg_split_marker/
187 # || /\t\.end/ NOT! Let the split_marker regexp catch it
188 # || /\t\.ent/ NOT! Let the split_marker regexp catch it
189 || /^\s+(save|retl?|restore|nop)/)) {
193 print STDERR "### BLOCK:$count:\n$str" if $Dump_asm_splitting_info;
196 $str =~ tr/\r//d if $TargetPlatform =~ /-mingw32$/; # in case Perl doesn't convert line endings
201 We must (a)~strip the marker off the block, (b)~record any literal C
202 constants that are defined here, and (c)~inject copies of any C constants
203 that are used-but-not-defined here.
206 sub process_asm_block {
209 return(&process_asm_block_m68k($str)) if $TargetPlatform =~ /^m68k-/;
210 return(&process_asm_block_sparc($str)) if $TargetPlatform =~ /^sparc-/;
211 return(&process_asm_block_iX86($str)) if $TargetPlatform =~ /^i[34]86-/;
212 return(&process_asm_block_alpha($str)) if $TargetPlatform =~ /^alpha-/;
213 return(&process_asm_block_hppa($str)) if $TargetPlatform =~ /^hppa/;
214 return(&process_asm_block_mips($str)) if $TargetPlatform =~ /^mips-/;
215 return(&process_asm_block_powerpc_darwin($str))
216 if $TargetPlatform =~ /^powerpc-apple-darwin/;
217 return(&process_asm_block_powerpc_linux($str))
218 if $TargetPlatform =~ /^powerpc-[^-]+-linux/;
221 &tidy_up_and_die(1,"$Pgm: no process_asm_block for $TargetPlatform\n");
224 sub process_asm_block_sparc {
229 $str =~ s/_?__stg_split_marker.*:\n//;
231 $str =~ s/(\.text\n\t\.align .\n)\t\.global\s+.*_?__stg_split_marker.*\n\t\.proc.*\n/$1/;
232 $str =~ s/(\t\.align .\n)\t\.global\s+.*_?__stg_split_marker.*\n\t\.proc.*\n/$1/;
235 # make sure the *.hc filename gets saved; not just ghc*.c (temp name)
236 $str =~ s/^\.stabs "(ghc\d+\.c)"/.stabs "$ifile_root.hc"/g; # HACK HACK
238 # remove/record any literal constants defined here
239 while ( $str =~ /(\t\.align .\n\.?(L?LC\d+):\n(\t\.asci[iz].*\n)+)/ ) {
243 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
244 if $LocalConstant{$label};
246 $LocalConstant{$label} = $body;
248 $str =~ s/\t\.align .\n\.?LL?C\d+:\n(\t\.asci[iz].*\n)+//;
251 # inject definitions for any local constants now used herein
252 foreach $k (keys %LocalConstant) {
253 if ( $str =~ /\b$k\b/ ) {
254 $str = $LocalConstant{$k} . $str;
258 print STDERR "### STRIPPED BLOCK (sparc):\n$str" if $Dump_asm_splitting_info;
263 sub process_asm_block_m68k {
268 $str =~ s/(\.text\n\t\.even\n)\t\.globl\s+.*_?__stg_split_marker.*\n/$1/;
269 $str =~ s/(\t\.even\n)\t\.globl\s+.*_?__stg_split_marker.*\n/$1/;
271 # it seems prudent to stick on one of these:
272 $str = "\.text\n\t.even\n" . $str;
274 # remove/record any literal constants defined here
275 while ( $str =~ /((LC\d+):\n\t\.ascii.*\n)/ ) {
279 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
280 if $LocalConstant{$label};
282 $LocalConstant{$label} = $body;
284 $str =~ s/LC\d+:\n\t\.ascii.*\n//;
287 # inject definitions for any local constants now used herein
288 foreach $k (keys %LocalConstant) {
289 if ( $str =~ /\b$k\b/ ) {
290 $str = $LocalConstant{$k} . $str;
294 print STDERR "### STRIPPED BLOCK (m68k):\n$str" if $Dump_asm_splitting_info;
299 sub process_asm_block_alpha {
304 $str =~ s/_?__stg_split_marker.*:\n//;
306 $str =~ s/(\t\.align .\n)\t\.globl\s+.*_?__stg_split_marker.*\n\t\.ent.*\n/$1/;
309 # remove/record any literal constants defined here
310 while ( $str =~ /(\.rdata\n\t\.align \d\n)?(\$(C\d+):\n\t\..*\n)/ ) {
314 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
315 if $LocalConstant{$label};
317 $LocalConstant{$label} = ".rdata\n\t.align 3\n" . $body . "\t.text\n";
319 $str =~ s/(\.rdata\n\t\.align \d\n)?\$C\d+:\n\t\..*\n//;
322 # inject definitions for any local constants now used herein
323 foreach $k (keys %LocalConstant) {
324 if ( $str =~ /\$\b$k\b/ ) {
325 $str = $LocalConstant{$k} . $str;
329 # Slide the dummy direct return code into the vtbl .ent/.end block,
330 # to keep the label fixed if it's the last thing in a module, and
331 # to avoid having any anonymous text that the linker will complain about
332 $str =~ s/(\t\.end [A-Za-z0-9_]+)\n\t# nop/\tnop\n$1/g;
334 print STDERR "### STRIPPED BLOCK (alpha):\n$str" if $Dump_asm_splitting_info;
339 sub process_asm_block_iX86 {
344 $str =~ s/(\.text\n\t\.align .(,0x90)?\n)\.globl\s+.*_?__stg_split_marker.*\n/$1/;
345 $str =~ s/(\t\.align .(,0x90)?\n)\.globl\s+.*_?__stg_split_marker.*\n/$1/;
347 # it seems prudent to stick on one of these:
348 $str = "\.text\n\t.align 4\n" . $str;
350 # remove/record any literal constants defined here
351 # [perl made uglier to work around the perl 5.7/5.8 bug documented at
352 # http://bugs6.perl.org/rt2/Ticket/Display.html?id=1760 and illustrated
353 # by the seg fault of perl -e '("x\n" x 5000) =~ /(.*\n)+/'
354 # -- ccshan 2002-09-05]
355 while ( ($str =~ /(\.?(LC\d+):\n(\t\.(ascii|string).*\n|\s*\.byte.*\n){1,100})/ )) {
358 local($prefix, $suffix, $*) = ($`, $', 0);
360 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
361 if $LocalConstant{$label};
363 while ( $suffix =~ /^((\t\.(ascii|string).*\n|\s*\.byte.*\n){1,100})/ ) {
367 $LocalConstant{$label} = $body;
368 $str = $prefix . $suffix;
371 # inject definitions for any local constants now used herein
372 foreach $k (keys %LocalConstant) {
373 if ( $str =~ /\b$k\b/ ) {
374 $str = $LocalConstant{$k} . $str;
378 print STDERR "### STRIPPED BLOCK (iX86):\n$str" if $Dump_asm_splitting_info;
385 sub process_asm_block_hppa {
389 $str =~ s/___stg_split_marker.*\n//;
391 # remove/record any imports defined here
392 while ( $str =~ /^(\s+\.IMPORT\s.*\n)/ ) {
395 $str =~ s/^\s+\.IMPORT.*\n//;
398 # remove/record any literal constants defined here
399 while ( $str =~ /^(\s+\.align.*\n(L\$C\d+)\n(\s.*\n)+); end literal\n/ ) {
404 $label =~ s/\$/\\\$/g;
406 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
407 if $LocalConstant{$label};
409 $LocalConstant{$label} = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$LIT\$\n\n" . $body;
411 $str = $prefix . $suffix;
414 # inject definitions for any local constants now used herein
415 foreach $k (keys %LocalConstant) {
416 if ( $str =~ /\b$k\b/ ) {
417 $str = $LocalConstant{$k} . $str;
421 # inject required imports for local exports in other chunks
422 foreach $k (keys %LocalExport) {
423 if ( $str =~ /\b$k\b/ && ! /EXPORT\s+$k\b/ ) {
424 $str = $LocalExport{$k} . $str;
428 # inject collected imports
430 $str = $Imports . $str;
432 print STDERR "### STRIPPED BLOCK (hppa):\n$str" if $Dump_asm_splitting_info;
439 sub process_asm_block_mips {
444 $str =~ s/_?__stg_split_marker.*:\n//;
446 $str =~ s/(\t\.align .\n)\t\.globl\s+.*_?__stg_split_marker.*\n\t\.ent.*\n/$1/;
449 # remove/record any literal constants defined here
450 while ( $str =~ /(\t\.rdata\n\t\.align \d\n)?(\$(LC\d+):\n(\t\.byte\t.*\n)+)/ ) {
454 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
455 if $LocalConstant{$label};
457 $LocalConstant{$label} = "\t.rdata\n\t.align 2\n" . $body . "\t.text\n";
459 $str =~ s/(\t\.rdata\n\t\.align \d\n)?\$LC\d+:\n(\t\.byte\t.*\n)+//;
462 # inject definitions for any local constants now used herein
463 foreach $k (keys %LocalConstant) {
464 if ( $str =~ /\$\b$k\b/ ) {
465 $str = $LocalConstant{$k} . $str;
469 # Slide the dummy direct return code into the vtbl .ent/.end block,
470 # to keep the label fixed if it's the last thing in a module, and
471 # to avoid having any anonymous text that the linker will complain about
472 $str =~ s/(\t\.end [A-Za-z0-9_]+)\n\t# nop/\tnop\n$1/g;
474 $str .= $UNDEFINED_FUNS; # pin on gratuitiously-large amount of info
476 print STDERR "### STRIPPED BLOCK (mips):\n$str" if $Dump_asm_splitting_info;
483 sub process_asm_block_powerpc_darwin {
485 local($dyld_stuff) = '';
488 $str =~ s/___stg_split_marker.*\n//;
490 $str =~ s/L_.*\$.*:\n(.|\n)*//;
492 # remove/record any literal constants defined here
493 while ( $str =~ s/^(\s+.const.*\n\s+\.align.*\n(LC\d+):\n(\s\.(byte|short|long|fill|space|ascii).*\n)+)// ) {
497 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
498 if $LocalConstant{$label};
500 $LocalConstant{$label} = $body;
503 # inject definitions for any local constants now used herein
504 foreach $k (keys %LocalConstant) {
505 if ( $str =~ /\b$k(\b|\[)/ ) {
506 $str = $LocalConstant{$k} . $str;
510 foreach $k (keys %DyldChunks) {
511 if ( $str =~ /\bL$k\$/ ) {
512 if ( $str =~ /^$k:$/ ) {
513 $dyld_stuff .= $DyldChunksDefined{$k};
515 $dyld_stuff .= $DyldChunks{$k};
520 $str .= "\n" . $dyld_stuff;
522 print STDERR "### STRIPPED BLOCK (powerpc darwin):\n$str" if $Dump_asm_splitting_info;
529 sub process_asm_block_powerpc_linux {
533 $str =~ s/__stg_split_marker.*\n//;
535 # remove/record any literal constants defined here
536 while ( $str =~ s/^(\s+.section\s+\.rodata\n\s+\.align.*\n(\.LC\d+):\n(\s\.(byte|short|long|quad|2byte|4byte|8byte|fill|space|ascii|string).*\n)+)// ) {
540 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
541 if $LocalConstant{$label};
543 $LocalConstant{$label} = $body;
546 # inject definitions for any local constants now used herein
547 foreach $k (keys %LocalConstant) {
548 if ( $str =~ /[\s,]$k\b/ ) {
549 $str = $LocalConstant{$k} . $str;
553 print STDERR "### STRIPPED BLOCK (powerpc linux):\n$str" if $Dump_asm_splitting_info;
560 sub tidy_up_and_die {
561 local($return_val, $msg) = @_;
563 exit (($return_val == 0) ? 0 : 1);