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 # Make sure that we still have some output when the input file is empty
74 $ofname = "${Tmp_prefix}__${octr}.s";
75 open(OUTF, "> $ofname") || die "$Pgm: can't open output file: $ofname\n";
77 print OUTF $prologue_stuff;
80 || &tidy_up_and_die(1,"$Pgm:Failed writing ${Tmp_prefix}__${octr}.s\n");
83 $NoOfSplitFiles = $octr;
85 close(TMPI) || &tidy_up_and_die(1,"Failed reading $asm_file\n");
88 sub collectExports_hppa { # Note: HP-PA only
90 %LocalExport = (); # NB: global table
93 if (/^\s+\.EXPORT\s+([^,]+),.*\n/) {
95 local($body) = "\t.IMPORT $label";
101 $label =~ s/\$/\\\$/g;
102 $LocalExport{$label} = $body;
109 sub collectExports_mips { # Note: MIPS only
110 # (not really sure this is necessary [WDP 95/05])
112 $UNDEFINED_FUNS = ''; # NB: global table
115 $UNDEFINED_FUNS .= $_ if /^\t\.globl\s+\S+ \.\S+\n/;
122 sub collectDyldStuff_powerpc_darwin {
123 local($chunk_label,$label,$cur_section,$section,$chunk,$alignment,$cur_alignment);
125 %DyldChunks = (); # NB: global table
126 %DyldChunksDefined = (); # NB: global table
137 if ( $_ eq '' || /^L(_.+)\$.+:/ ) {
138 if ( $label ne '' ) {
139 $DyldChunksDefined{$label} .= $section . $alignment . $chunk_label . $ chunk;
140 if( $section =~ s/\.data/\.non_lazy_symbol_pointer/ ) {
141 $chunk = "\t.indirect_symbol $label\n\t.long 0\n";
143 $DyldChunks{$label} .= $section . $alignment . $chunk_label . $chunk;
144 print STDERR "### dyld chunk: $label\n$section$alignment$chunk\n###\n" if $Dump_asm_splitting_info;
151 $section = $cur_section;
152 $alignment = $cur_alignment;
153 print STDERR "label: $label\n" if $Dump_asm_splitting_info;
154 } elsif ( /^\s*\.(symbol_stub|picsymbol_stub|lazy_symbol_pointer|non_lazy_symbol_pointer|data)/ ) {
156 printf STDERR "section: $cur_section\n" if $Dump_asm_splitting_info;
158 } elsif ( /^\s*\.section\s+__TEXT,__symbol_stub1,symbol_stubs,pure_instructions,\d+/ ) {
160 printf STDERR "section: $cur_section\n" if $Dump_asm_splitting_info;
161 # always make sure we align things
162 $cur_alignment = '\t.align 2'
163 } elsif ( /^\s*\.align.*/ ) {
165 printf STDERR "alignment: $cur_alignment\n" if $Dump_asm_splitting_info;
174 sub ReadTMPIUpToAMarker {
175 local($str, $count) = @_; # already read bits
178 for ( $_ = <TMPI>; $_ ne '' && ! /_?__stg_split_marker/; $_ = <TMPI> ) {
181 # if not EOF, then creep forward until next "real" line
182 # (throwing everything away).
183 # that first "real" line will stay in $_.
185 # This loop is intended to pick up the body of the split_marker function
186 # Note that the assembler mangler will already have eliminated this code
187 # if it's been invoked (which it probably has).
189 while ($_ ne '' && (/_?__stg_split_marker/
199 # || /\t\.end/ NOT! Let the split_marker regexp catch it
200 # || /\t\.ent/ NOT! Let the split_marker regexp catch it
201 || /^\s+(save|retl?|restore|nop)/)) {
205 print STDERR "### BLOCK:$count:\n$str" if $Dump_asm_splitting_info;
208 $str =~ tr/\r//d if $TargetPlatform =~ /-mingw32$/; # in case Perl doesn't convert line endings
213 We must (a)~strip the marker off the block, (b)~record any literal C
214 constants that are defined here, and (c)~inject copies of any C constants
215 that are used-but-not-defined here.
218 sub process_asm_block {
221 return(&process_asm_block_m68k($str)) if $TargetPlatform =~ /^m68k-/;
222 return(&process_asm_block_sparc($str)) if $TargetPlatform =~ /^sparc-/;
223 return(&process_asm_block_iX86($str)) if $TargetPlatform =~ /^i[34]86-/;
224 return(&process_asm_block_alpha($str)) if $TargetPlatform =~ /^alpha-/;
225 return(&process_asm_block_hppa($str)) if $TargetPlatform =~ /^hppa/;
226 return(&process_asm_block_mips($str)) if $TargetPlatform =~ /^mips-/;
227 return(&process_asm_block_powerpc_darwin($str))
228 if $TargetPlatform =~ /^powerpc-apple-darwin/;
229 return(&process_asm_block_powerpc_linux($str))
230 if $TargetPlatform =~ /^powerpc-[^-]+-linux/;
233 &tidy_up_and_die(1,"$Pgm: no process_asm_block for $TargetPlatform\n");
236 sub process_asm_block_sparc {
241 $str =~ s/_?__stg_split_marker.*:\n//;
243 $str =~ s/(\.text\n\t\.align .\n)\t\.global\s+.*_?__stg_split_marker.*\n\t\.proc.*\n/$1/;
244 $str =~ s/(\t\.align .\n)\t\.global\s+.*_?__stg_split_marker.*\n\t\.proc.*\n/$1/;
247 # make sure the *.hc filename gets saved; not just ghc*.c (temp name)
248 $str =~ s/^\.stabs "(ghc\d+\.c)"/.stabs "$ifile_root.hc"/g; # HACK HACK
250 # remove/record any literal constants defined here
251 while ( $str =~ /(\t\.align .\n\.?(L?LC\d+):\n(\t\.asci[iz].*\n)+)/ ) {
255 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
256 if $LocalConstant{$label};
258 $LocalConstant{$label} = $body;
260 $str =~ s/\t\.align .\n\.?LL?C\d+:\n(\t\.asci[iz].*\n)+//;
263 # inject definitions for any local constants now used herein
264 foreach $k (keys %LocalConstant) {
265 if ( $str =~ /\b$k\b/ ) {
266 $str = $LocalConstant{$k} . $str;
270 print STDERR "### STRIPPED BLOCK (sparc):\n$str" if $Dump_asm_splitting_info;
275 sub process_asm_block_m68k {
280 $str =~ s/(\.text\n\t\.even\n)\t\.globl\s+.*_?__stg_split_marker.*\n/$1/;
281 $str =~ s/(\t\.even\n)\t\.globl\s+.*_?__stg_split_marker.*\n/$1/;
283 # it seems prudent to stick on one of these:
284 $str = "\.text\n\t.even\n" . $str;
286 # remove/record any literal constants defined here
287 while ( $str =~ /((LC\d+):\n\t\.ascii.*\n)/ ) {
291 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
292 if $LocalConstant{$label};
294 $LocalConstant{$label} = $body;
296 $str =~ s/LC\d+:\n\t\.ascii.*\n//;
299 # inject definitions for any local constants now used herein
300 foreach $k (keys %LocalConstant) {
301 if ( $str =~ /\b$k\b/ ) {
302 $str = $LocalConstant{$k} . $str;
306 print STDERR "### STRIPPED BLOCK (m68k):\n$str" if $Dump_asm_splitting_info;
311 sub process_asm_block_alpha {
316 $str =~ s/_?__stg_split_marker.*:\n//;
318 $str =~ s/(\t\.align .\n)\t\.globl\s+.*_?__stg_split_marker.*\n\t\.ent.*\n/$1/;
321 # remove/record any literal constants defined here
322 while ( $str =~ /(\.rdata\n\t\.align \d\n)?(\$(C\d+):\n\t\..*\n)/ ) {
326 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
327 if $LocalConstant{$label};
329 $LocalConstant{$label} = ".rdata\n\t.align 3\n" . $body . "\t.text\n";
331 $str =~ s/(\.rdata\n\t\.align \d\n)?\$C\d+:\n\t\..*\n//;
334 # inject definitions for any local constants now used herein
335 foreach $k (keys %LocalConstant) {
336 if ( $str =~ /\$\b$k\b/ ) {
337 $str = $LocalConstant{$k} . $str;
341 # Slide the dummy direct return code into the vtbl .ent/.end block,
342 # to keep the label fixed if it's the last thing in a module, and
343 # to avoid having any anonymous text that the linker will complain about
344 $str =~ s/(\t\.end [A-Za-z0-9_]+)\n\t# nop/\tnop\n$1/g;
346 print STDERR "### STRIPPED BLOCK (alpha):\n$str" if $Dump_asm_splitting_info;
351 sub process_asm_block_iX86 {
356 $str =~ s/(\.text\n\t\.align .(,0x90)?\n)\.globl\s+.*_?__stg_split_marker.*\n/$1/;
357 $str =~ s/(\t\.align .(,0x90)?\n)\.globl\s+.*_?__stg_split_marker.*\n/$1/;
359 # it seems prudent to stick on one of these:
360 $str = "\.text\n\t.align 4\n" . $str;
362 # remove/record any literal constants defined here
363 # [perl made uglier to work around the perl 5.7/5.8 bug documented at
364 # http://bugs6.perl.org/rt2/Ticket/Display.html?id=1760 and illustrated
365 # by the seg fault of perl -e '("x\n" x 5000) =~ /(.*\n)+/'
366 # -- ccshan 2002-09-05]
367 while ( ($str =~ /(\.?(LC\d+):\n(\t\.(ascii|string).*\n|\s*\.byte.*\n){1,100})/ )) {
370 local($prefix, $suffix, $*) = ($`, $', 0);
372 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
373 if $LocalConstant{$label};
375 while ( $suffix =~ /^((\t\.(ascii|string).*\n|\s*\.byte.*\n){1,100})/ ) {
379 $LocalConstant{$label} = $body;
380 $str = $prefix . $suffix;
383 # inject definitions for any local constants now used herein
384 foreach $k (keys %LocalConstant) {
385 if ( $str =~ /\b$k\b/ ) {
386 $str = $LocalConstant{$k} . $str;
390 print STDERR "### STRIPPED BLOCK (iX86):\n$str" if $Dump_asm_splitting_info;
397 sub process_asm_block_hppa {
401 $str =~ s/___stg_split_marker.*\n//;
403 # remove/record any imports defined here
404 while ( $str =~ /^(\s+\.IMPORT\s.*\n)/ ) {
407 $str =~ s/^\s+\.IMPORT.*\n//;
410 # remove/record any literal constants defined here
411 while ( $str =~ /^(\s+\.align.*\n(L\$C\d+)\n(\s.*\n)+); end literal\n/ ) {
416 $label =~ s/\$/\\\$/g;
418 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
419 if $LocalConstant{$label};
421 $LocalConstant{$label} = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$LIT\$\n\n" . $body;
423 $str = $prefix . $suffix;
426 # inject definitions for any local constants now used herein
427 foreach $k (keys %LocalConstant) {
428 if ( $str =~ /\b$k\b/ ) {
429 $str = $LocalConstant{$k} . $str;
433 # inject required imports for local exports in other chunks
434 foreach $k (keys %LocalExport) {
435 if ( $str =~ /\b$k\b/ && ! /EXPORT\s+$k\b/ ) {
436 $str = $LocalExport{$k} . $str;
440 # inject collected imports
442 $str = $Imports . $str;
444 print STDERR "### STRIPPED BLOCK (hppa):\n$str" if $Dump_asm_splitting_info;
451 sub process_asm_block_mips {
456 $str =~ s/_?__stg_split_marker.*:\n//;
458 $str =~ s/(\t\.align .\n)\t\.globl\s+.*_?__stg_split_marker.*\n\t\.ent.*\n/$1/;
461 # remove/record any literal constants defined here
462 while ( $str =~ /(\t\.rdata\n\t\.align \d\n)?(\$(LC\d+):\n(\t\.byte\t.*\n)+)/ ) {
466 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
467 if $LocalConstant{$label};
469 $LocalConstant{$label} = "\t.rdata\n\t.align 2\n" . $body . "\t.text\n";
471 $str =~ s/(\t\.rdata\n\t\.align \d\n)?\$LC\d+:\n(\t\.byte\t.*\n)+//;
474 # inject definitions for any local constants now used herein
475 foreach $k (keys %LocalConstant) {
476 if ( $str =~ /\$\b$k\b/ ) {
477 $str = $LocalConstant{$k} . $str;
481 # Slide the dummy direct return code into the vtbl .ent/.end block,
482 # to keep the label fixed if it's the last thing in a module, and
483 # to avoid having any anonymous text that the linker will complain about
484 $str =~ s/(\t\.end [A-Za-z0-9_]+)\n\t# nop/\tnop\n$1/g;
486 $str .= $UNDEFINED_FUNS; # pin on gratuitiously-large amount of info
488 print STDERR "### STRIPPED BLOCK (mips):\n$str" if $Dump_asm_splitting_info;
495 sub process_asm_block_powerpc_darwin {
497 local($dyld_stuff) = '';
500 $str =~ s/___stg_split_marker.*\n//;
502 $str =~ s/L_.*\$.*:\n(.|\n)*//;
504 # remove/record any literal constants defined here
505 while ( $str =~ s/^(\s+.const.*\n\s+\.align.*\n(LC\d+):\n(\s\.(byte|short|long|fill|space|ascii).*\n)+)// ) {
509 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
510 if $LocalConstant{$label};
512 $LocalConstant{$label} = $body;
515 # inject definitions for any local constants now used herein
516 foreach $k (keys %LocalConstant) {
517 if ( $str =~ /\b$k(\b|\[)/ ) {
518 $str = $LocalConstant{$k} . $str;
522 foreach $k (keys %DyldChunks) {
523 if ( $str =~ /\bL$k\$/ ) {
524 if ( $str =~ /^$k:$/ ) {
525 $dyld_stuff .= $DyldChunksDefined{$k};
527 $dyld_stuff .= $DyldChunks{$k};
532 $str .= "\n" . $dyld_stuff;
534 print STDERR "### STRIPPED BLOCK (powerpc darwin):\n$str" if $Dump_asm_splitting_info;
541 sub process_asm_block_powerpc_linux {
545 $str =~ s/__stg_split_marker.*\n//;
547 # remove/record any literal constants defined here
548 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)+)// ) {
552 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
553 if $LocalConstant{$label};
555 $LocalConstant{$label} = $body;
558 # inject definitions for any local constants now used herein
559 foreach $k (keys %LocalConstant) {
560 if ( $str =~ /[\s,]$k\b/ ) {
561 $str = $LocalConstant{$k} . $str;
565 print STDERR "### STRIPPED BLOCK (powerpc linux):\n$str" if $Dump_asm_splitting_info;
572 sub tidy_up_and_die {
573 local($return_val, $msg) = @_;
575 exit (($return_val == 0) ? 0 : 1);