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_darwin() if $TargetPlatform =~ /-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 .= $_ if /^\t\.globl\s+\S+ \.\S+\n/;
122 sub collectDyldStuff_darwin {
123 local($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|section __IMPORT,.*)/ ) {
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_darwin($str))
222 if $TargetPlatform =~ /-apple-darwin/;
223 return(&process_asm_block_m68k($str)) if $TargetPlatform =~ /^m68k-/;
224 return(&process_asm_block_sparc($str)) if $TargetPlatform =~ /^sparc-/;
225 return(&process_asm_block_iX86($str)) if $TargetPlatform =~ /^i[34]86-/;
226 return(&process_asm_block_x86_64($str)) if $TargetPlatform =~ /^x86_64-/;
227 return(&process_asm_block_alpha($str)) if $TargetPlatform =~ /^alpha-/;
228 return(&process_asm_block_hppa($str)) if $TargetPlatform =~ /^hppa/;
229 return(&process_asm_block_mips($str)) if $TargetPlatform =~ /^mips-/;
230 return(&process_asm_block_powerpc_linux($str))
231 if $TargetPlatform =~ /^powerpc-[^-]+-linux/;
234 &tidy_up_and_die(1,"$Pgm: no process_asm_block for $TargetPlatform\n");
237 sub process_asm_block_sparc {
242 $str =~ s/_?__stg_split_marker.*:\n//;
244 $str =~ s/(\.text\n\t\.align .\n)\t\.global\s+.*_?__stg_split_marker.*\n\t\.proc.*\n/$1/;
245 $str =~ s/(\t\.align .\n)\t\.global\s+.*_?__stg_split_marker.*\n\t\.proc.*\n/$1/;
248 # make sure the *.hc filename gets saved; not just ghc*.c (temp name)
249 $str =~ s/^\.stabs "(ghc\d+\.c)"/.stabs "$ifile_root.hc"/g; # HACK HACK
251 # remove/record any literal constants defined here
252 while ( $str =~ /(\t\.align .\n\.?(L?LC\d+):\n(\t\.asci[iz].*\n)+)/ ) {
256 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
257 if $LocalConstant{$label};
259 $LocalConstant{$label} = $body;
261 $str =~ s/\t\.align .\n\.?LL?C\d+:\n(\t\.asci[iz].*\n)+//;
264 # inject definitions for any local constants now used herein
265 foreach $k (keys %LocalConstant) {
266 if ( $str =~ /\b$k\b/ ) {
267 $str = $LocalConstant{$k} . $str;
271 print STDERR "### STRIPPED BLOCK (sparc):\n$str" if $Dump_asm_splitting_info;
276 sub process_asm_block_m68k {
281 $str =~ s/(\.text\n\t\.even\n)\t\.globl\s+.*_?__stg_split_marker.*\n/$1/;
282 $str =~ s/(\t\.even\n)\t\.globl\s+.*_?__stg_split_marker.*\n/$1/;
284 # it seems prudent to stick on one of these:
285 $str = "\.text\n\t.even\n" . $str;
287 # remove/record any literal constants defined here
288 while ( $str =~ /((LC\d+):\n\t\.ascii.*\n)/ ) {
292 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
293 if $LocalConstant{$label};
295 $LocalConstant{$label} = $body;
297 $str =~ s/LC\d+:\n\t\.ascii.*\n//;
300 # inject definitions for any local constants now used herein
301 foreach $k (keys %LocalConstant) {
302 if ( $str =~ /\b$k\b/ ) {
303 $str = $LocalConstant{$k} . $str;
307 print STDERR "### STRIPPED BLOCK (m68k):\n$str" if $Dump_asm_splitting_info;
312 sub process_asm_block_alpha {
317 $str =~ s/_?__stg_split_marker.*:\n//;
319 $str =~ s/(\t\.align .\n)\t\.globl\s+.*_?__stg_split_marker.*\n\t\.ent.*\n/$1/;
322 # remove/record any literal constants defined here
323 while ( $str =~ /(\.rdata\n\t\.align \d\n)?(\$(C\d+):\n\t\..*\n)/ ) {
327 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
328 if $LocalConstant{$label};
330 $LocalConstant{$label} = ".rdata\n\t.align 3\n" . $body . "\t.text\n";
332 $str =~ s/(\.rdata\n\t\.align \d\n)?\$C\d+:\n\t\..*\n//;
335 # inject definitions for any local constants now used herein
336 foreach $k (keys %LocalConstant) {
337 if ( $str =~ /\$\b$k\b/ ) {
338 $str = $LocalConstant{$k} . $str;
342 # Slide the dummy direct return code into the vtbl .ent/.end block,
343 # to keep the label fixed if it's the last thing in a module, and
344 # to avoid having any anonymous text that the linker will complain about
345 $str =~ s/(\t\.end [A-Za-z0-9_]+)\n\t# nop/\tnop\n$1/g;
347 print STDERR "### STRIPPED BLOCK (alpha):\n$str" if $Dump_asm_splitting_info;
352 sub process_asm_block_iX86 {
357 $str =~ s/(\.text\n\t\.align .(,0x90)?\n)\.globl\s+.*_?__stg_split_marker.*\n/$1/;
358 $str =~ s/(\t\.align .(,0x90)?\n)\.globl\s+.*_?__stg_split_marker.*\n/$1/;
360 # it seems prudent to stick on one of these:
361 $str = "\.text\n\t.align 4\n" . $str;
363 # remove/record any literal constants defined here
364 # [perl made uglier to work around the perl 5.7/5.8 bug documented at
365 # http://bugs6.perl.org/rt2/Ticket/Display.html?id=1760 and illustrated
366 # by the seg fault of perl -e '("x\n" x 5000) =~ /(.*\n)+/'
367 # -- ccshan 2002-09-05]
368 while ( ($str =~ /(\.?(LC\d+):\n(\t\.(ascii|string).*\n|\s*\.byte.*\n){1,100})/ )) {
371 local($prefix, $suffix, $*) = ($`, $', 0);
373 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
374 if $LocalConstant{$label};
376 while ( $suffix =~ /^((\t\.(ascii|string).*\n|\s*\.byte.*\n){1,100})/ ) {
380 $LocalConstant{$label} = $body;
381 $str = $prefix . $suffix;
384 # inject definitions for any local constants now used herein
385 foreach $k (keys %LocalConstant) {
386 if ( $str =~ /\b$k\b/ ) {
387 $str = $LocalConstant{$k} . $str;
391 print STDERR "### STRIPPED BLOCK (iX86):\n$str" if $Dump_asm_splitting_info;
398 sub process_asm_block_x86_64 {
401 # remove/record any literal constants defined here
402 # [perl made uglier to work around the perl 5.7/5.8 bug documented at
403 # http://bugs6.perl.org/rt2/Ticket/Display.html?id=1760 and illustrated
404 # by the seg fault of perl -e '("x\n" x 5000) =~ /(.*\n)+/'
405 # -- ccshan 2002-09-05]
406 while ( ($str =~ /(\.?(LC\d+):\n(\t\.(ascii|string).*\n|\s*\.byte.*\n){1,100})/ )) {
409 local($prefix, $suffix, $*) = ($`, $', 0);
411 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
412 if $LocalConstant{$label};
414 while ( $suffix =~ /^((\t\.(ascii|string).*\n|\s*\.byte.*\n){1,100})/ ) {
418 $LocalConstant{$label} = $body;
419 $str = $prefix . $suffix;
422 # inject definitions for any local constants now used herein
423 foreach $k (keys %LocalConstant) {
424 if ( $str =~ /\b$k\b/ ) {
425 $str = $LocalConstant{$k} . $str;
429 print STDERR "### STRIPPED BLOCK (x86_64):\n$str" if $Dump_asm_splitting_info;
436 sub process_asm_block_hppa {
440 $str =~ s/___stg_split_marker.*\n//;
442 # remove/record any imports defined here
443 while ( $str =~ /^(\s+\.IMPORT\s.*\n)/ ) {
446 $str =~ s/^\s+\.IMPORT.*\n//;
449 # remove/record any literal constants defined here
450 while ( $str =~ /^(\s+\.align.*\n(L\$C\d+)\n(\s.*\n)+); end literal\n/ ) {
455 $label =~ s/\$/\\\$/g;
457 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
458 if $LocalConstant{$label};
460 $LocalConstant{$label} = "\t.SPACE \$TEXT\$\n\t.SUBSPA \$LIT\$\n\n" . $body;
462 $str = $prefix . $suffix;
465 # inject definitions for any local constants now used herein
466 foreach $k (keys %LocalConstant) {
467 if ( $str =~ /\b$k\b/ ) {
468 $str = $LocalConstant{$k} . $str;
472 # inject required imports for local exports in other chunks
473 foreach $k (keys %LocalExport) {
474 if ( $str =~ /\b$k\b/ && ! /EXPORT\s+$k\b/ ) {
475 $str = $LocalExport{$k} . $str;
479 # inject collected imports
481 $str = $Imports . $str;
483 print STDERR "### STRIPPED BLOCK (hppa):\n$str" if $Dump_asm_splitting_info;
490 sub process_asm_block_mips {
495 $str =~ s/_?__stg_split_marker.*:\n//;
497 $str =~ s/(\t\.align .\n)\t\.globl\s+.*_?__stg_split_marker.*\n\t\.ent.*\n/$1/;
500 # remove/record any literal constants defined here
501 while ( $str =~ /(\t\.rdata\n\t\.align \d\n)?(\$(LC\d+):\n(\t\.byte\t.*\n)+)/ ) {
505 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
506 if $LocalConstant{$label};
508 $LocalConstant{$label} = "\t.rdata\n\t.align 2\n" . $body . "\t.text\n";
510 $str =~ s/(\t\.rdata\n\t\.align \d\n)?\$LC\d+:\n(\t\.byte\t.*\n)+//;
513 # inject definitions for any local constants now used herein
514 foreach $k (keys %LocalConstant) {
515 if ( $str =~ /\$\b$k\b/ ) {
516 $str = $LocalConstant{$k} . $str;
520 # Slide the dummy direct return code into the vtbl .ent/.end block,
521 # to keep the label fixed if it's the last thing in a module, and
522 # to avoid having any anonymous text that the linker will complain about
523 $str =~ s/(\t\.end [A-Za-z0-9_]+)\n\t# nop/\tnop\n$1/g;
525 $str .= $UNDEFINED_FUNS; # pin on gratuitiously-large amount of info
527 print STDERR "### STRIPPED BLOCK (mips):\n$str" if $Dump_asm_splitting_info;
534 # The logic for both Darwin/PowerPC and Darwin/x86 ends up being the same.
536 sub process_asm_block_darwin {
538 local($dyld_stuff) = '';
541 $str =~ s/___stg_split_marker.*\n//;
543 $str =~ s/L_.*\$.*:\n(.|\n)*//;
545 # remove/record any literal constants defined here
546 while ( $str =~ s/^(\s+.const.*\n\s+\.align.*\n(LC\d+):\n(\s\.(byte|short|long|fill|space|ascii).*\n)+)// ) {
550 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
551 if $LocalConstant{$label};
553 $LocalConstant{$label} = $body;
556 # inject definitions for any local constants now used herein
557 foreach $k (keys %LocalConstant) {
558 if ( $str =~ /\b$k(\b|\[)/ ) {
559 $str = $LocalConstant{$k} . $str;
563 foreach $k (keys %DyldChunks) {
564 if ( $str =~ /\bL$k\$/ ) {
565 if ( $str =~ /^$k:$/ ) {
566 $dyld_stuff .= $DyldChunksDefined{$k};
568 $dyld_stuff .= $DyldChunks{$k};
573 $str .= "\n" . $dyld_stuff;
575 print STDERR "### STRIPPED BLOCK (darwin):\n$str" if $Dump_asm_splitting_info;
582 sub process_asm_block_powerpc_linux {
586 $str =~ s/__stg_split_marker.*\n//;
588 # remove/record any literal constants defined here
589 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)+)// ) {
593 &tidy_up_and_die(1,"Local constant label $label already defined!\n")
594 if $LocalConstant{$label};
596 $LocalConstant{$label} = $body;
599 # inject definitions for any local constants now used herein
600 foreach $k (keys %LocalConstant) {
601 if ( $str =~ /[\s,]$k\b/ ) {
602 $str = $LocalConstant{$k} . $str;
606 print STDERR "### STRIPPED BLOCK (powerpc linux):\n$str" if $Dump_asm_splitting_info;
613 sub tidy_up_and_die {
614 local($return_val, $msg) = @_;
616 exit (($return_val == 0) ? 0 : 1);