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Move lib/B/... and lib/[BO].pm over to where they should be,
[perl5.git] / ext / B / B / C.pm
CommitLineData
a798dbf2
MB		 1# C.pm
2#
3# Copyright (c) 1996, 1997 Malcolm Beattie
4#
5# You may distribute under the terms of either the GNU General Public
6# License or the Artistic License, as specified in the README file.
7#
8package B::C;
9use Exporter ();
10@ISA = qw(Exporter);
11@EXPORT_OK = qw(output_all output_boilerplate output_main
12 init_sections set_callback save_unused_subs objsym);
13
14use B qw(minus_c sv_undef walkoptree walksymtable main_root main_start peekop
15 class cstring cchar svref_2object compile_stats comppadlist hash
16 threadsv_names);
17use B::Asmdata qw(@specialsv_name);
18
19use FileHandle;
20use Carp;
21use strict;
22
23my $hv_index = 0;
24my $gv_index = 0;
25my $re_index = 0;
26my $pv_index = 0;
27my $anonsub_index = 0;
28
29my %symtable;
30my $warn_undefined_syms;
31my $verbose;
32my @unused_sub_packages;
33my $nullop_count;
34my $pv_copy_on_grow;
35my ($debug_cops, $debug_av, $debug_cv, $debug_mg);
36
37my @threadsv_names;
38BEGIN {
39 @threadsv_names = threadsv_names();
40}
41
42# Code sections
43my ($init, $decl, $symsect, $binopsect, $condopsect, $copsect, $cvopsect,
44 $gvopsect, $listopsect, $logopsect, $loopsect, $opsect, $pmopsect,
45 $pvopsect, $svopsect, $unopsect, $svsect, $xpvsect, $xpvavsect,
46 $xpvhvsect, $xpvcvsect, $xpvivsect, $xpvnvsect, $xpvmgsect, $xpvlvsect,
47 $xrvsect, $xpvbmsect, $xpviosect);
48
49sub walk_and_save_optree;
50my $saveoptree_callback = \&walk_and_save_optree;
51sub set_callback { $saveoptree_callback = shift }
52sub saveoptree { &$saveoptree_callback(@_) }
53
54sub walk_and_save_optree {
55 my ($name, $root, $start) = @_;
56 walkoptree($root, "save");
57 return objsym($start);
58}
59
60# Current workaround/fix for op_free() trying to free statically
61# defined OPs is to set op_seq = -1 and check for that in op_free().
62# Instead of hardwiring -1 in place of $op->seq, we use $op_seq
63# so that it can be changed back easily if necessary. In fact, to
64# stop compilers from moaning about a U16 being initialised with an
65# uncast -1 (the printf format is %d so we can't tweak it), we have
66# to "know" that op_seq is a U16 and use 65535. Ugh.
67my $op_seq = 65535;
68
69sub AVf_REAL () { 1 }
70
71# XXX This shouldn't really be hardcoded here but it saves
72# looking up the name of every BASEOP in B::OP
73sub OP_THREADSV () { 345 }
74
75sub savesym {
76 my ($obj, $value) = @_;
77 my $sym = sprintf("s\\_%x", $$obj);
78 $symtable{$sym} = $value;
79}
80
81sub objsym {
82 my $obj = shift;
83 return $symtable{sprintf("s\\_%x", $$obj)};
84}
85
86sub getsym {
87 my $sym = shift;
88 my $value;
89
90 return 0 if $sym eq "sym_0"; # special case
91 $value = $symtable{$sym};
92 if (defined($value)) {
93 return $value;
94 } else {
95 warn "warning: undefined symbol $sym\n" if $warn_undefined_syms;
96 return "UNUSED";
97 }
98}
99
100sub savepv {
101 my $pv = shift;
102 my $pvsym = 0;
103 my $pvmax = 0;
104 if ($pv_copy_on_grow) {
105 my $cstring = cstring($pv);
106 if ($cstring ne "0") { # sic
107 $pvsym = sprintf("pv%d", $pv_index++);
108 $decl->add(sprintf("static char %s[] = %s;", $pvsym, $cstring));
109 }
110 } else {
111 $pvmax = length($pv) + 1;
112 }
113 return ($pvsym, $pvmax);
114}
115
116sub B::OP::save {
117 my ($op, $level) = @_;
118 my $type = $op->type;
119 $nullop_count++ unless $type;
120 if ($type == OP_THREADSV) {
121 # saves looking up ppaddr but it's a bit naughty to hard code this
122 $init->add(sprintf("(void)find_threadsv(%s);",
123 cstring($threadsv_names[$op->targ])));
124 }
125 $opsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x",
126 ${$op->next}, ${$op->sibling}, $op->ppaddr, $op->targ,
127 $type, $op_seq, $op->flags, $op->private));
128 savesym($op, sprintf("&op_list[%d]", $opsect->index));
129}
130
131sub B::FAKEOP::new {
132 my ($class, %objdata) = @_;
133 bless \%objdata, $class;
134}
135
136sub B::FAKEOP::save {
137 my ($op, $level) = @_;
138 $opsect->add(sprintf("%s, %s, %s, %u, %u, %u, 0x%x, 0x%x",
139 $op->next, $op->sibling, $op->ppaddr, $op->targ,
140 $op->type, $op_seq, $op->flags, $op->private));
141 return sprintf("&op_list[%d]", $opsect->index);
142}
143
144sub B::FAKEOP::next { $_[0]->{"next"} || 0 }
145sub B::FAKEOP::type { $_[0]->{type} || 0}
146sub B::FAKEOP::sibling { $_[0]->{sibling} || 0 }
147sub B::FAKEOP::ppaddr { $_[0]->{ppaddr} || 0 }
148sub B::FAKEOP::targ { $_[0]->{targ} || 0 }
149sub B::FAKEOP::flags { $_[0]->{flags} || 0 }
150sub B::FAKEOP::private { $_[0]->{private} || 0 }
151
152sub B::UNOP::save {
153 my ($op, $level) = @_;
154 $unopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x",
155 ${$op->next}, ${$op->sibling}, $op->ppaddr,
156 $op->targ, $op->type, $op_seq, $op->flags,
157 $op->private, ${$op->first}));
158 savesym($op, sprintf("(OP*)&unop_list[%d]", $unopsect->index));
159}
160
161sub B::BINOP::save {
162 my ($op, $level) = @_;
163 $binopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x",
164 ${$op->next}, ${$op->sibling}, $op->ppaddr,
165 $op->targ, $op->type, $op_seq, $op->flags,
166 $op->private, ${$op->first}, ${$op->last}));
167 savesym($op, sprintf("(OP*)&binop_list[%d]", $binopsect->index));
168}
169
170sub B::LISTOP::save {
171 my ($op, $level) = @_;
172 $listopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, %u",
173 ${$op->next}, ${$op->sibling}, $op->ppaddr,
174 $op->targ, $op->type, $op_seq, $op->flags,
175 $op->private, ${$op->first}, ${$op->last},
176 $op->children));
177 savesym($op, sprintf("(OP*)&listop_list[%d]", $listopsect->index));
178}
179
180sub B::LOGOP::save {
181 my ($op, $level) = @_;
182 $logopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x",
183 ${$op->next}, ${$op->sibling}, $op->ppaddr,
184 $op->targ, $op->type, $op_seq, $op->flags,
185 $op->private, ${$op->first}, ${$op->other}));
186 savesym($op, sprintf("(OP*)&logop_list[%d]", $logopsect->index));
187}
188
189sub B::CONDOP::save {
190 my ($op, $level) = @_;
191 $condopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, s\\_%x",
192 ${$op->next}, ${$op->sibling}, $op->ppaddr,
193 $op->targ, $op->type, $op_seq, $op->flags,
194 $op->private, ${$op->first}, ${$op->true},
195 ${$op->false}));
196 savesym($op, sprintf("(OP*)&condop_list[%d]", $condopsect->index));
197}
198
199sub B::LOOP::save {
200 my ($op, $level) = @_;
201 #warn sprintf("LOOP: redoop %s, nextop %s, lastop %s\n",
202 # peekop($op->redoop), peekop($op->nextop),
203 # peekop($op->lastop)); # debug
204 $loopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, %u, s\\_%x, s\\_%x, s\\_%x",
205 ${$op->next}, ${$op->sibling}, $op->ppaddr,
206 $op->targ, $op->type, $op_seq, $op->flags,
207 $op->private, ${$op->first}, ${$op->last},
208 $op->children, ${$op->redoop}, ${$op->nextop},
209 ${$op->lastop}));
210 savesym($op, sprintf("(OP*)&loop_list[%d]", $loopsect->index));
211}
212
213sub B::PVOP::save {
214 my ($op, $level) = @_;
215 $pvopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, %s",
216 ${$op->next}, ${$op->sibling}, $op->ppaddr,
217 $op->targ, $op->type, $op_seq, $op->flags,
218 $op->private, cstring($op->pv)));
219 savesym($op, sprintf("(OP*)&pvop_list[%d]", $pvopsect->index));
220}
221
222sub B::SVOP::save {
223 my ($op, $level) = @_;
224 my $svsym = $op->sv->save;
225 $svopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, %s",
226 ${$op->next}, ${$op->sibling}, $op->ppaddr,
227 $op->targ, $op->type, $op_seq, $op->flags,
228 $op->private, "(SV*)$svsym"));
229 savesym($op, sprintf("(OP*)&svop_list[%d]", $svopsect->index));
230}
231
232sub B::GVOP::save {
233 my ($op, $level) = @_;
234 my $gvsym = $op->gv->save;
235 $gvopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, Nullgv",
236 ${$op->next}, ${$op->sibling}, $op->ppaddr,
237 $op->targ, $op->type, $op_seq, $op->flags,
238 $op->private));
239 $init->add(sprintf("gvop_list[%d].op_gv = %s;", $gvopsect->index, $gvsym));
240 savesym($op, sprintf("(OP*)&gvop_list[%d]", $gvopsect->index));
241}
242
243sub B::COP::save {
244 my ($op, $level) = @_;
245 my $gvsym = $op->filegv->save;
246 my $stashsym = $op->stash->save;
247 warn sprintf("COP: line %d file %s\n", $op->line, $op->filegv->SV->PV)
248 if $debug_cops;
249 $copsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, %s, Nullhv, Nullgv, %u, %d, %u",
250 ${$op->next}, ${$op->sibling}, $op->ppaddr,
251 $op->targ, $op->type, $op_seq, $op->flags,
252 $op->private, cstring($op->label), $op->cop_seq,
253 $op->arybase, $op->line));
254 my $copix = $copsect->index;
255 $init->add(sprintf("cop_list[%d].cop_filegv = %s;", $copix, $gvsym),
256 sprintf("cop_list[%d].cop_stash = %s;", $copix, $stashsym));
257 savesym($op, "(OP*)&cop_list[$copix]");
258}
259
260sub B::PMOP::save {
261 my ($op, $level) = @_;
262 my $replroot = $op->pmreplroot;
263 my $replstart = $op->pmreplstart;
264 my $replrootfield = sprintf("s\\_%x", $$replroot);
265 my $replstartfield = sprintf("s\\_%x", $$replstart);
266 my $gvsym;
267 my $ppaddr = $op->ppaddr;
268 if ($$replroot) {
269 # OP_PUSHRE (a mutated version of OP_MATCH for the regexp
270 # argument to a split) stores a GV in op_pmreplroot instead
271 # of a substitution syntax tree. We don't want to walk that...
272 if ($ppaddr eq "pp_pushre") {
273 $gvsym = $replroot->save;
274# warn "PMOP::save saving a pp_pushre with GV $gvsym\n"; # debug
275 $replrootfield = 0;
276 } else {
277 $replstartfield = saveoptree("*ignore*", $replroot, $replstart);
278 }
279 }
280 # pmnext handling is broken in perl itself, I think. Bad op_pmnext
281 # fields aren't noticed in perl's runtime (unless you try reset) but we
282 # segfault when trying to dereference it to find op->op_pmnext->op_type
283 $pmopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, %u, %s, %s, 0, 0, 0x%x, 0x%x",
284 ${$op->next}, ${$op->sibling}, $ppaddr, $op->targ,
285 $op->type, $op_seq, $op->flags, $op->private,
286 ${$op->first}, ${$op->last}, $op->children,
287 $replrootfield, $replstartfield,
288 $op->pmflags, $op->pmpermflags,));
289 my $pm = sprintf("pmop_list[%d]", $pmopsect->index);
290 my $re = $op->precomp;
291 if (defined($re)) {
292 my $resym = sprintf("re%d", $re_index++);
293 $decl->add(sprintf("static char *$resym = %s;", cstring($re)));
294 $init->add(sprintf("$pm.op_pmregexp = pregcomp($resym, $resym + %u, &$pm);",
295 length($re)));
296 }
297 if ($gvsym) {
298 $init->add("$pm.op_pmreplroot = (OP*)$gvsym;");
299 }
300 savesym($op, sprintf("(OP*)&pmop_list[%d]", $pmopsect->index));
301}
302
303sub B::SPECIAL::save {
304 my ($sv) = @_;
305 # special case: $$sv is not the address but an index into specialsv_list
306# warn "SPECIAL::save specialsv $$sv\n"; # debug
307 my $sym = $specialsv_name[$$sv];
308 if (!defined($sym)) {
309 confess "unknown specialsv index $$sv passed to B::SPECIAL::save";
310 }
311 return $sym;
312}
313
314sub B::OBJECT::save {}
315
316sub B::NULL::save {
317 my ($sv) = @_;
318 my $sym = objsym($sv);
319 return $sym if defined $sym;
320# warn "Saving SVt_NULL SV\n"; # debug
321 # debug
322 #if ($$sv == 0) {
323 # warn "NULL::save for sv = 0 called from @{[(caller(1))[3]]}\n";
324 #}
325 $svsect->add(sprintf("0, %u, 0x%x", $sv->REFCNT + 1, $sv->FLAGS));
326 return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
327}
328
329sub B::IV::save {
330 my ($sv) = @_;
331 my $sym = objsym($sv);
332 return $sym if defined $sym;
333 $xpvivsect->add(sprintf("0, 0, 0, %d", $sv->IVX));
334 $svsect->add(sprintf("&xpviv_list[%d], %lu, 0x%x",
335 $xpvivsect->index, $sv->REFCNT + 1, $sv->FLAGS));
336 return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
337}
338
339sub B::NV::save {
340 my ($sv) = @_;
341 my $sym = objsym($sv);
342 return $sym if defined $sym;
343 $xpvnvsect->add(sprintf("0, 0, 0, %d, %s", $sv->IVX, $sv->NVX));
344 $svsect->add(sprintf("&xpvnv_list[%d], %lu, 0x%x",
345 $xpvnvsect->index, $sv->REFCNT + 1, $sv->FLAGS));
346 return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
347}
348
349sub B::PVLV::save {
350 my ($sv) = @_;
351 my $sym = objsym($sv);
352 return $sym if defined $sym;
353 my $pv = $sv->PV;
354 my $len = length($pv);
355 my ($pvsym, $pvmax) = savepv($pv);
356 my ($lvtarg, $lvtarg_sym);
357 $xpvlvsect->add(sprintf("%s, %u, %u, %d, %g, 0, 0, %u, %u, 0, %s",
358 $pvsym, $len, $pvmax, $sv->IVX, $sv->NVX,
359 $sv->TARGOFF, $sv->TARGLEN, cchar($sv->TYPE)));
360 $svsect->add(sprintf("&xpvlv_list[%d], %lu, 0x%x",
361 $xpvlvsect->index, $sv->REFCNT + 1, $sv->FLAGS));
362 if (!$pv_copy_on_grow) {
363 $init->add(sprintf("xpvlv_list[%d].xpv_pv = savepvn(%s, %u);",
364 $xpvlvsect->index, cstring($pv), $len));
365 }
366 $sv->save_magic;
367 return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
368}
369
370sub B::PVIV::save {
371 my ($sv) = @_;
372 my $sym = objsym($sv);
373 return $sym if defined $sym;
374 my $pv = $sv->PV;
375 my $len = length($pv);
376 my ($pvsym, $pvmax) = savepv($pv);
377 $xpvivsect->add(sprintf("%s, %u, %u, %d", $pvsym, $len, $pvmax, $sv->IVX));
378 $svsect->add(sprintf("&xpviv_list[%d], %u, 0x%x",
379 $xpvivsect->index, $sv->REFCNT + 1, $sv->FLAGS));
380 if (!$pv_copy_on_grow) {
381 $init->add(sprintf("xpviv_list[%d].xpv_pv = savepvn(%s, %u);",
382 $xpvivsect->index, cstring($pv), $len));
383 }
384 return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
385}
386
387sub B::PVNV::save {
388 my ($sv) = @_;
389 my $sym = objsym($sv);
390 return $sym if defined $sym;
391 my $pv = $sv->PV;
392 my $len = length($pv);
393 my ($pvsym, $pvmax) = savepv($pv);
394 $xpvnvsect->add(sprintf("%s, %u, %u, %d, %s",
395 $pvsym, $len, $pvmax, $sv->IVX, $sv->NVX));
396 $svsect->add(sprintf("&xpvnv_list[%d], %lu, 0x%x",
397 $xpvnvsect->index, $sv->REFCNT + 1, $sv->FLAGS));
398 if (!$pv_copy_on_grow) {
399 $init->add(sprintf("xpvnv_list[%d].xpv_pv = savepvn(%s,%u);",
400 $xpvnvsect->index, cstring($pv), $len));
401 }
402 return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
403}
404
405sub B::BM::save {
406 my ($sv) = @_;
407 my $sym = objsym($sv);
408 return $sym if defined $sym;
409 my $pv = $sv->PV . "\0" . $sv->TABLE;
410 my $len = length($pv);
411 $xpvbmsect->add(sprintf("0, %u, %u, %d, %s, 0, 0, %d, %u, 0x%x",
412 $len, $len + 258, $sv->IVX, $sv->NVX,
413 $sv->USEFUL, $sv->PREVIOUS, $sv->RARE));
414 $svsect->add(sprintf("&xpvbm_list[%d], %lu, 0x%x",
415 $xpvbmsect->index, $sv->REFCNT + 1, $sv->FLAGS));
416 $sv->save_magic;
417 $init->add(sprintf("xpvbm_list[%d].xpv_pv = savepvn(%s, %u);",
418 $xpvbmsect->index, cstring($pv), $len),
419 sprintf("xpvbm_list[%d].xpv_cur = %u;",
420 $xpvbmsect->index, $len - 257));
421 return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
422}
423
424sub B::PV::save {
425 my ($sv) = @_;
426 my $sym = objsym($sv);
427 return $sym if defined $sym;
428 my $pv = $sv->PV;
429 my $len = length($pv);
430 my ($pvsym, $pvmax) = savepv($pv);
431 $xpvsect->add(sprintf("%s, %u, %u", $pvsym, $len, $pvmax));
432 $svsect->add(sprintf("&xpv_list[%d], %lu, 0x%x",
433 $xpvsect->index, $sv->REFCNT + 1, $sv->FLAGS));
434 if (!$pv_copy_on_grow) {
435 $init->add(sprintf("xpv_list[%d].xpv_pv = savepvn(%s, %u);",
436 $xpvsect->index, cstring($pv), $len));
437 }
438 return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
439}
440
441sub B::PVMG::save {
442 my ($sv) = @_;
443 my $sym = objsym($sv);
444 return $sym if defined $sym;
445 my $pv = $sv->PV;
446 my $len = length($pv);
447 my ($pvsym, $pvmax) = savepv($pv);
448 $xpvmgsect->add(sprintf("%s, %u, %u, %d, %s, 0, 0",
449 $pvsym, $len, $pvmax, $sv->IVX, $sv->NVX));
450 $svsect->add(sprintf("&xpvmg_list[%d], %lu, 0x%x",
451 $xpvmgsect->index, $sv->REFCNT + 1, $sv->FLAGS));
452 if (!$pv_copy_on_grow) {
453 $init->add(sprintf("xpvmg_list[%d].xpv_pv = savepvn(%s, %u);",
454 $xpvmgsect->index, cstring($pv), $len));
455 }
456 $sym = savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
457 $sv->save_magic;
458 return $sym;
459}
460
461sub B::PVMG::save_magic {
462 my ($sv) = @_;
463 #warn sprintf("saving magic for %s (0x%x)\n", class($sv), $$sv); # debug
464 my $stash = $sv->SvSTASH;
465 if ($$stash) {
466 warn sprintf("xmg_stash = %s (0x%x)\n", $stash->NAME, $$stash)
467 if $debug_mg;
468 # XXX Hope stash is already going to be saved.
469 $init->add(sprintf("SvSTASH(s\\_%x) = s\\_%x;", $$sv, $$stash));
470 }
471 my @mgchain = $sv->MAGIC;
472 my ($mg, $type, $obj, $ptr);
473 foreach $mg (@mgchain) {
474 $type = $mg->TYPE;
475 $obj = $mg->OBJ;
476 $ptr = $mg->PTR;
477 my $len = defined($ptr) ? length($ptr) : 0;
478 if ($debug_mg) {
479 warn sprintf("magic %s (0x%x), obj %s (0x%x), type %s, ptr %s\n",
480 class($sv), $$sv, class($obj), $$obj,
481 cchar($type), cstring($ptr));
482 }
483 $init->add(sprintf("sv_magic((SV*)s\\_%x, (SV*)s\\_%x, %s, %s, %d);",
484 $$sv, $$obj, cchar($type),cstring($ptr),$len));
485 }
486}
487
488sub B::RV::save {
489 my ($sv) = @_;
490 my $sym = objsym($sv);
491 return $sym if defined $sym;
492 $xrvsect->add($sv->RV->save);
493 $svsect->add(sprintf("&xrv_list[%d], %lu, 0x%x",
494 $xrvsect->index, $sv->REFCNT + 1, $sv->FLAGS));
495 return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
496}
497
498sub try_autoload {
499 my ($cvstashname, $cvname) = @_;
500 warn sprintf("No definition for sub %s::%s\n", $cvstashname, $cvname);
501 # Handle AutoLoader classes explicitly. Any more general AUTOLOAD
502 # use should be handled by the class itself.
503 no strict 'refs';
504 my $isa = \@{"$cvstashname\::ISA"};
505 if (grep($_ eq "AutoLoader", @$isa)) {
506 warn "Forcing immediate load of sub derived from AutoLoader\n";
507 # Tweaked version of AutoLoader::AUTOLOAD
508 my $dir = $cvstashname;
509 $dir =~ s(::)(/)g;
510 eval { require "auto/$dir/$cvname.al" };
511 if ($@) {
512 warn qq(failed require "auto/$dir/$cvname.al": $@\n);
513 return 0;
514 } else {
515 return 1;
516 }
517 }
518}
519
520sub B::CV::save {
521 my ($cv) = @_;
522 my $sym = objsym($cv);
523 if (defined($sym)) {
524# warn sprintf("CV 0x%x already saved as $sym\n", $$cv); # debug
525 return $sym;
526 }
527 # Reserve a place in svsect and xpvcvsect and record indices
528 my $sv_ix = $svsect->index + 1;
529 $svsect->add("svix$sv_ix");
530 my $xpvcv_ix = $xpvcvsect->index + 1;
531 $xpvcvsect->add("xpvcvix$xpvcv_ix");
532 # Save symbol now so that GvCV() doesn't recurse back to us via CvGV()
533 $sym = savesym($cv, "&sv_list[$sv_ix]");
534 warn sprintf("saving CV 0x%x as $sym\n", $$cv) if $debug_cv;
535 my $gv = $cv->GV;
536 my $cvstashname = $gv->STASH->NAME;
537 my $cvname = $gv->NAME;
538 my $root = $cv->ROOT;
539 my $cvxsub = $cv->XSUB;
540 if (!$$root && !$cvxsub) {
541 if (try_autoload($cvstashname, $cvname)) {
542 # Recalculate root and xsub
543 $root = $cv->ROOT;
544 $cvxsub = $cv->XSUB;
545 if ($$root || $cvxsub) {
546 warn "Successful forced autoload\n";
547 }
548 }
549 }
550 my $startfield = 0;
551 my $padlist = $cv->PADLIST;
552 my $pv = $cv->PV;
553 my $xsub = 0;
554 my $xsubany = "Nullany";
555 if ($$root) {
556 warn sprintf("saving op tree for CV 0x%x, root = 0x%x\n",
557 $$cv, $$root) if $debug_cv;
558 my $ppname = "";
559 if ($$gv) {
560 my $stashname = $gv->STASH->NAME;
561 my $gvname = $gv->NAME;
562 if ($gvname ne "__ANON__") {
563 $ppname = (${$gv->FORM} == $$cv) ? "pp_form_" : "pp_sub_";
564 $ppname .= ($stashname eq "main") ?
565 $gvname : "$stashname\::$gvname";
566 $ppname =~ s/::/__/g;
567 }
568 }
569 if (!$ppname) {
570 $ppname = "pp_anonsub_$anonsub_index";
571 $anonsub_index++;
572 }
573 $startfield = saveoptree($ppname, $root, $cv->START, $padlist->ARRAY);
574 warn sprintf("done saving op tree for CV 0x%x, name %s, root 0x%x\n",
575 $$cv, $ppname, $$root) if $debug_cv;
576 if ($$padlist) {
577 warn sprintf("saving PADLIST 0x%x for CV 0x%x\n",
578 $$padlist, $$cv) if $debug_cv;
579 $padlist->save;
580 warn sprintf("done saving PADLIST 0x%x for CV 0x%x\n",
581 $$padlist, $$cv) if $debug_cv;
582 }
583 }
584 elsif ($cvxsub) {
585 $xsubany = sprintf("ANYINIT((void*)0x%x)", $cv->XSUBANY);
586 # Try to find out canonical name of XSUB function from EGV.
587 # XXX Doesn't work for XSUBs with PREFIX set (or anyone who
588 # calls newXS() manually with weird arguments).
589 my $egv = $gv->EGV;
590 my $stashname = $egv->STASH->NAME;
591 $stashname =~ s/::/__/g;
592 $xsub = sprintf("XS_%s_%s", $stashname, $egv->NAME);
593 $decl->add("void $xsub _((CV*));");
594 }
595 else {
596 warn sprintf("No definition for sub %s::%s (unable to autoload)\n",
597 $cvstashname, $cvname); # debug
598 }
599 $symsect->add(sprintf("xpvcvix%d\t%s, %u, 0, %d, %s, 0, Nullhv, Nullhv, %s, s\\_%x, $xsub, $xsubany, Nullgv, Nullgv, %d, s\\_%x, (CV*)s\\_%x, 0",
600 $xpvcv_ix, cstring($pv), length($pv), $cv->IVX,
601 $cv->NVX, $startfield, ${$cv->ROOT}, $cv->DEPTH,
602 $$padlist, ${$cv->OUTSIDE}));
603 if ($$gv) {
604 $gv->save;
605 $init->add(sprintf("CvGV(s\\_%x) = s\\_%x;",$$cv,$$gv));
606 warn sprintf("done saving GV 0x%x for CV 0x%x\n",
607 $$gv, $$cv) if $debug_cv;
608 }
609 my $filegv = $cv->FILEGV;
610 if ($$filegv) {
611 $filegv->save;
612 $init->add(sprintf("CvFILEGV(s\\_%x) = s\\_%x;", $$cv, $$filegv));
613 warn sprintf("done saving FILEGV 0x%x for CV 0x%x\n",
614 $$filegv, $$cv) if $debug_cv;
615 }
616 my $stash = $cv->STASH;
617 if ($$stash) {
618 $stash->save;
619 $init->add(sprintf("CvSTASH(s\\_%x) = s\\_%x;", $$cv, $$stash));
620 warn sprintf("done saving STASH 0x%x for CV 0x%x\n",
621 $$stash, $$cv) if $debug_cv;
622 }
623 $symsect->add(sprintf("svix%d\t(XPVCV*)&xpvcv_list[%u], %lu, 0x%x",
624 $sv_ix, $xpvcv_ix, $cv->REFCNT + 1, $cv->FLAGS));
625 return $sym;
626}
627
628sub B::GV::save {
629 my ($gv) = @_;
630 my $sym = objsym($gv);
631 if (defined($sym)) {
632 #warn sprintf("GV 0x%x already saved as $sym\n", $$gv); # debug
633 return $sym;
634 } else {
635 my $ix = $gv_index++;
636 $sym = savesym($gv, "gv_list[$ix]");
637 #warn sprintf("Saving GV 0x%x as $sym\n", $$gv); # debug
638 }
639 my $gvname = $gv->NAME;
640 my $name = cstring($gv->STASH->NAME . "::" . $gvname);
641 #warn "GV name is $name\n"; # debug
642 my $egv = $gv->EGV;
643 my $egvsym;
644 if ($$gv != $$egv) {
645 #warn(sprintf("EGV name is %s, saving it now\n",
646 # $egv->STASH->NAME . "::" . $egv->NAME)); # debug
647 $egvsym = $egv->save;
648 }
649 $init->add(qq[$sym = gv_fetchpv($name, TRUE, SVt_PV);],
650 sprintf("SvFLAGS($sym) = 0x%x;", $gv->FLAGS),
651 sprintf("GvFLAGS($sym) = 0x%x;", $gv->GvFLAGS),
652 sprintf("GvLINE($sym) = %u;", $gv->LINE));
653 # Shouldn't need to do save_magic since gv_fetchpv handles that
654 #$gv->save_magic;
655 my $refcnt = $gv->REFCNT + 1;
656 $init->add(sprintf("SvREFCNT($sym) += %u;", $refcnt - 1)) if $refcnt > 1;
657 my $gvrefcnt = $gv->GvREFCNT;
658 if ($gvrefcnt > 1) {
659 $init->add(sprintf("GvREFCNT($sym) += %u;", $gvrefcnt - 1));
660 }
661 if (defined($egvsym)) {
662 # Shared glob *foo = *bar
663 $init->add("gp_free($sym);",
664 "GvGP($sym) = GvGP($egvsym);");
665 } elsif ($gvname !~ /^([^A-Za-z]|STDIN|STDOUT|STDERR|ARGV|SIG|ENV)$/) {
666 # Don't save subfields of special GVs (*_, *1, *# and so on)
667# warn "GV::save saving subfields\n"; # debug
668 my $gvsv = $gv->SV;
669 if ($$gvsv) {
670 $init->add(sprintf("GvSV($sym) = s\\_%x;", $$gvsv));
671# warn "GV::save \$$name\n"; # debug
672 $gvsv->save;
673 }
674 my $gvav = $gv->AV;
675 if ($$gvav) {
676 $init->add(sprintf("GvAV($sym) = s\\_%x;", $$gvav));
677# warn "GV::save \@$name\n"; # debug
678 $gvav->save;
679 }
680 my $gvhv = $gv->HV;
681 if ($$gvhv) {
682 $init->add(sprintf("GvHV($sym) = s\\_%x;", $$gvhv));
683# warn "GV::save \%$name\n"; # debug
684 $gvhv->save;
685 }
686 my $gvcv = $gv->CV;
687 if ($$gvcv) {
688 $init->add(sprintf("GvCV($sym) = (CV*)s\\_%x;", $$gvcv));
689# warn "GV::save &$name\n"; # debug
690 $gvcv->save;
691 }
692 my $gvfilegv = $gv->FILEGV;
693 if ($$gvfilegv) {
694 $init->add(sprintf("GvFILEGV($sym) = s\\_%x;",$$gvfilegv));
695# warn "GV::save GvFILEGV(*$name)\n"; # debug
696 $gvfilegv->save;
697 }
698 my $gvform = $gv->FORM;
699 if ($$gvform) {
700 $init->add(sprintf("GvFORM($sym) = (CV*)s\\_%x;", $$gvform));
701# warn "GV::save GvFORM(*$name)\n"; # debug
702 $gvform->save;
703 }
704 my $gvio = $gv->IO;
705 if ($$gvio) {
706 $init->add(sprintf("GvIOp($sym) = s\\_%x;", $$gvio));
707# warn "GV::save GvIO(*$name)\n"; # debug
708 $gvio->save;
709 }
710 }
711 return $sym;
712}
713sub B::AV::save {
714 my ($av) = @_;
715 my $sym = objsym($av);
716 return $sym if defined $sym;
717 my $avflags = $av->AvFLAGS;
718 $xpvavsect->add(sprintf("0, -1, -1, 0, 0.0, 0, Nullhv, 0, 0, 0x%x",
719 $avflags));
720 $svsect->add(sprintf("&xpvav_list[%d], %lu, 0x%x",
721 $xpvavsect->index, $av->REFCNT + 1, $av->FLAGS));
722 my $sv_list_index = $svsect->index;
723 my $fill = $av->FILL;
724 $av->save_magic;
725 warn sprintf("saving AV 0x%x FILL=$fill AvFLAGS=0x%x", $$av, $avflags)
726 if $debug_av;
727 # XXX AVf_REAL is wrong test: need to save comppadlist but not stack
728 #if ($fill > -1 && ($avflags & AVf_REAL)) {
729 if ($fill > -1) {
730 my @array = $av->ARRAY;
731 if ($debug_av) {
732 my $el;
733 my $i = 0;
734 foreach $el (@array) {
735 warn sprintf("AV 0x%x[%d] = %s 0x%x\n",
736 $$av, $i++, class($el), $$el);
737 }
738 }
739 my @names = map($_->save, @array);
740 # XXX Better ways to write loop?
741 # Perhaps svp[0] = ...; svp[1] = ...; svp[2] = ...;
742 # Perhaps I32 i = 0; svp[i++] = ...; svp[i++] = ...; svp[i++] = ...;
743 $init->add("{",
744 "\tSV **svp;",
745 "\tAV *av = (AV*)&sv_list[$sv_list_index];",
746 "\tav_extend(av, $fill);",
747 "\tsvp = AvARRAY(av);",
748 map("\t*svp++ = (SV*)$_;", @names),
749 "\tAvFILLp(av) = $fill;",
750 "}");
751 } else {
752 my $max = $av->MAX;
753 $init->add("av_extend((AV*)&sv_list[$sv_list_index], $max);")
754 if $max > -1;
755 }
756 return savesym($av, "(AV*)&sv_list[$sv_list_index]");
757}
758
759sub B::HV::save {
760 my ($hv) = @_;
761 my $sym = objsym($hv);
762 return $sym if defined $sym;
763 my $name = $hv->NAME;
764 if ($name) {
765 # It's a stash
766
767 # A perl bug means HvPMROOT isn't altered when a PMOP is freed. Usually
768 # the only symptom is that sv_reset tries to reset the PMf_USED flag of
769 # a trashed op but we look at the trashed op_type and segfault.
770 #my $adpmroot = ${$hv->PMROOT};
771 my $adpmroot = 0;
772 $decl->add("static HV *hv$hv_index;");
773 # XXX Beware of weird package names containing double-quotes, \n, ...?
774 $init->add(qq[hv$hv_index = gv_stashpv("$name", TRUE);]);
775 if ($adpmroot) {
776 $init->add(sprintf("HvPMROOT(hv$hv_index) = (PMOP*)s\\_%x;",
777 $adpmroot));
778 }
779 $sym = savesym($hv, "hv$hv_index");
780 $hv_index++;
781 return $sym;
782 }
783 # It's just an ordinary HV
784 $xpvhvsect->add(sprintf("0, 0, %d, 0, 0.0, 0, Nullhv, %d, 0, 0, 0",
785 $hv->MAX, $hv->RITER));
786 $svsect->add(sprintf("&xpvhv_list[%d], %lu, 0x%x",
787 $xpvhvsect->index, $hv->REFCNT + 1, $hv->FLAGS));
788 my $sv_list_index = $svsect->index;
789 my @contents = $hv->ARRAY;
790 if (@contents) {
791 my $i;
792 for ($i = 1; $i < @contents; $i += 2) {
793 $contents[$i] = $contents[$i]->save;
794 }
795 $init->add("{", "\tHV *hv = (HV*)&sv_list[$sv_list_index];");
796 while (@contents) {
797 my ($key, $value) = splice(@contents, 0, 2);
798 $init->add(sprintf("\thv_store(hv, %s, %u, %s, %s);",
799 cstring($key),length($key),$value, hash($key)));
800 }
801 $init->add("}");
802 }
803 return savesym($hv, "(HV*)&sv_list[$sv_list_index]");
804}
805
806sub B::IO::save {
807 my ($io) = @_;
808 my $sym = objsym($io);
809 return $sym if defined $sym;
810 my $pv = $io->PV;
811 my $len = length($pv);
812 $xpviosect->add(sprintf("0, %u, %u, %d, %s, 0, 0, 0, 0, 0, %d, %d, %d, %d, %s, Nullgv, %s, Nullgv, %s, Nullgv, %d, %s, 0x%x",
813 $len, $len+1, $io->IVX, $io->NVX, $io->LINES,
814 $io->PAGE, $io->PAGE_LEN, $io->LINES_LEFT,
815 cstring($io->TOP_NAME), cstring($io->FMT_NAME),
816 cstring($io->BOTTOM_NAME), $io->SUBPROCESS,
817 cchar($io->IoTYPE), $io->IoFLAGS));
818 $svsect->add(sprintf("&xpvio_list[%d], %lu, 0x%x",
819 $xpviosect->index, $io->REFCNT + 1, $io->FLAGS));
820 $sym = savesym($io, sprintf("(IO*)&sv_list[%d]", $svsect->index));
821 my ($field, $fsym);
822 foreach $field (qw(TOP_GV FMT_GV BOTTOM_GV)) {
823 $fsym = $io->$field();
824 if ($$fsym) {
825 $init->add(sprintf("Io$field($sym) = (GV*)s\\_%x;", $$fsym));
826 $fsym->save;
827 }
828 }
829 $io->save_magic;
830 return $sym;
831}
832
833sub B::SV::save {
834 my $sv = shift;
835 # This is where we catch an honest-to-goodness Nullsv (which gets
836 # blessed into B::SV explicitly) and any stray erroneous SVs.
837 return 0 unless $$sv;
838 confess sprintf("cannot save that type of SV: %s (0x%x)\n",
839 class($sv), $$sv);
840}
841
842sub output_all {
843 my $init_name = shift;
844 my $section;
845 my @sections = ($opsect, $unopsect, $binopsect, $logopsect, $condopsect,
846 $listopsect, $pmopsect, $svopsect, $gvopsect, $pvopsect,
847 $cvopsect, $loopsect, $copsect, $svsect, $xpvsect,
848 $xpvavsect, $xpvhvsect, $xpvcvsect, $xpvivsect, $xpvnvsect,
849 $xpvmgsect, $xpvlvsect, $xrvsect, $xpvbmsect, $xpviosect);
850 $symsect->output(\*STDOUT, "#define %s\n");
851 print "\n";
852 output_declarations();
853 foreach $section (@sections) {
854 my $lines = $section->index + 1;
855 if ($lines) {
856 my $name = $section->name;
857 my $typename = ($name eq "xpvcv") ? "XPVCV_or_similar" : uc($name);
858 print "Static $typename ${name}_list[$lines];\n";
859 }
860 }
861 $decl->output(\*STDOUT, "%s\n");
862 print "\n";
863 foreach $section (@sections) {
864 my $lines = $section->index + 1;
865 if ($lines) {
866 my $name = $section->name;
867 my $typename = ($name eq "xpvcv") ? "XPVCV_or_similar" : uc($name);
868 printf "static %s %s_list[%u] = {\n", $typename, $name, $lines;
869 $section->output(\*STDOUT, "\t{ %s },\n");
870 print "};\n\n";
871 }
872 }
873
874 print <<"EOT";
875static int $init_name()
876{
877 dTHR;
878EOT
879 $init->output(\*STDOUT, "\t%s\n");
880 print "\treturn 0;\n}\n";
881 if ($verbose) {
882 warn compile_stats();
883 warn "NULLOP count: $nullop_count\n";
884 }
885}
886
887sub output_declarations {
888 print <<'EOT';
889#ifdef BROKEN_STATIC_REDECL
890#define Static extern
891#else
892#define Static static
893#endif /* BROKEN_STATIC_REDECL */
894
895#ifdef BROKEN_UNION_INIT
896/*
897 * Cribbed from cv.h with ANY (a union) replaced by void*.
898 * Some pre-Standard compilers can't cope with initialising unions. Ho hum.
899 */
900typedef struct {
901 char * xpv_pv; /* pointer to malloced string */
902 STRLEN xpv_cur; /* length of xp_pv as a C string */
903 STRLEN xpv_len; /* allocated size */
904 IV xof_off; /* integer value */
905 double xnv_nv; /* numeric value, if any */
906 MAGIC* xmg_magic; /* magic for scalar array */
907 HV* xmg_stash; /* class package */
908
909 HV * xcv_stash;
910 OP * xcv_start;
911 OP * xcv_root;
912 void (*xcv_xsub) _((CV*));
913 void * xcv_xsubany;
914 GV * xcv_gv;
915 GV * xcv_filegv;
916 long xcv_depth; /* >= 2 indicates recursive call */
917 AV * xcv_padlist;
918 CV * xcv_outside;
919#ifdef USE_THREADS
920 perl_mutex *xcv_mutexp;
921 struct perl_thread *xcv_owner; /* current owner thread */
922#endif /* USE_THREADS */
923 U8 xcv_flags;
924} XPVCV_or_similar;
925#define ANYINIT(i) i
926#else
927#define XPVCV_or_similar XPVCV
928#define ANYINIT(i) {i}
929#endif /* BROKEN_UNION_INIT */
930#define Nullany ANYINIT(0)
931
932#define UNUSED 0
933#define sym_0 0
934
935EOT
936 print "static GV *gv_list[$gv_index];\n" if $gv_index;
937 print "\n";
938}
939
940
941sub output_boilerplate {
942 print <<'EOT';
943#include "EXTERN.h"
944#include "perl.h"
945#ifndef PATCHLEVEL
946#include "patchlevel.h"
947#endif
948
949/* Workaround for mapstart: the only op which needs a different ppaddr */
950#undef pp_mapstart
951#define pp_mapstart pp_grepstart
952
953static void xs_init _((void));
954static PerlInterpreter *my_perl;
955EOT
956}
957
958sub output_main {
959 print <<'EOT';
960int
961#ifndef CAN_PROTOTYPE
962main(argc, argv, env)
963int argc;
964char **argv;
965char **env;
966#else /* def(CAN_PROTOTYPE) */
967main(int argc, char **argv, char **env)
968#endif /* def(CAN_PROTOTYPE) */
969{
970 int exitstatus;
971 int i;
972 char **fakeargv;
973
974 PERL_SYS_INIT(&argc,&argv);
975
976 perl_init_i18nl10n(1);
977
978 if (!do_undump) {
979 my_perl = perl_alloc();
980 if (!my_perl)
981 exit(1);
982 perl_construct( my_perl );
983 }
984
985#ifdef CSH
986 if (!cshlen)
987 cshlen = strlen(cshname);
988#endif
989
990#ifdef ALLOW_PERL_OPTIONS
991#define EXTRA_OPTIONS 2
992#else
993#define EXTRA_OPTIONS 3
994#endif /* ALLOW_PERL_OPTIONS */
995 New(666, fakeargv, argc + EXTRA_OPTIONS + 1, char *);
996 fakeargv[0] = argv[0];
997 fakeargv[1] = "-e";
998 fakeargv[2] = "";
999#ifndef ALLOW_PERL_OPTIONS
1000 fakeargv[3] = "--";
1001#endif /* ALLOW_PERL_OPTIONS */
1002 for (i = 1; i < argc; i++)
1003 fakeargv[i + EXTRA_OPTIONS] = argv[i];
1004 fakeargv[argc + EXTRA_OPTIONS] = 0;
1005
1006 exitstatus = perl_parse(my_perl, xs_init, argc + EXTRA_OPTIONS,
1007 fakeargv, NULL);
1008 if (exitstatus)
1009 exit( exitstatus );
1010
1011 sv_setpv(GvSV(gv_fetchpv("0", TRUE, SVt_PV)), argv[0]);
1012 main_cv = compcv;
1013 compcv = 0;
1014
1015 exitstatus = perl_init();
1016 if (exitstatus)
1017 exit( exitstatus );
1018
1019 exitstatus = perl_run( my_perl );
1020
1021 perl_destruct( my_perl );
1022 perl_free( my_perl );
1023
1024 exit( exitstatus );
1025}
1026
1027static void
1028xs_init()
1029{
1030}
1031EOT
1032}
1033
1034sub dump_symtable {
1035 # For debugging
1036 my ($sym, $val);
1037 warn "----Symbol table:\n";
1038 while (($sym, $val) = each %symtable) {
1039 warn "$sym => $val\n";
1040 }
1041 warn "---End of symbol table\n";
1042}
1043
1044sub save_object {
1045 my $sv;
1046 foreach $sv (@_) {
1047 svref_2object($sv)->save;
1048 }
1049}
1050
1051sub B::GV::savecv {
1052 my $gv = shift;
1053 my $cv = $gv->CV;
1054 my $name = $gv->NAME;
1055 if ($$cv && !objsym($cv) && !($name eq "bootstrap" && $cv->XSUB)) {
1056 if ($debug_cv) {
1057 warn sprintf("saving extra CV &%s::%s (0x%x) from GV 0x%x\n",
1058 $gv->STASH->NAME, $name, $$cv, $$gv);
1059 }
1060 $gv->save;
1061 }
1062}
1063
1064sub save_unused_subs {
1065 my %search_pack;
1066 map { $search_pack{$_} = 1 } @_;
1067 no strict qw(vars refs);
1068 walksymtable(\%{"main::"}, "savecv", sub {
1069 my $package = shift;
1070 $package =~ s/::$//;
1071 #warn "Considering $package\n";#debug
1072 return 1 if exists $search_pack{$package};
1073 #warn " (nothing explicit)\n";#debug
1074 # Omit the packages which we use (and which cause grief
1075 # because of fancy "goto &$AUTOLOAD" stuff).
1076 # XXX Surely there must be a nicer way to do this.
1077 if ($package eq "FileHandle"
1078 || $package eq "Config"
1079 || $package eq "SelectSaver") {
1080 return 0;
1081 }
1082 my $m;
1083 foreach $m (qw(new DESTROY TIESCALAR TIEARRAY TIEHASH)) {
1084 if (defined(&{$package."::$m"})) {
1085 warn "$package has method $m: -u$package assumed\n";#debug
1086 return 1;
1087 }
1088 }
1089 return 0;
1090 });
1091}
1092
1093sub save_main {
1094 my $curpad_sym = (comppadlist->ARRAY)[1]->save;
1095 walkoptree(main_root, "save");
1096 warn "done main optree, walking symtable for extras\n" if $debug_cv;
1097 save_unused_subs(@unused_sub_packages);
1098
1099 $init->add(sprintf("main_root = s\\_%x;", ${main_root()}),
1100 sprintf("main_start = s\\_%x;", ${main_start()}),
1101 "curpad = AvARRAY($curpad_sym);");
1102 output_boilerplate();
1103 print "\n";
1104 output_all("perl_init");
1105 print "\n";
1106 output_main();
1107}
1108
1109sub init_sections {
1110 my @sections = (init => \$init, decl => \$decl, sym => \$symsect,
1111 binop => \$binopsect, condop => \$condopsect,
1112 cop => \$copsect, cvop => \$cvopsect, gvop => \$gvopsect,
1113 listop => \$listopsect, logop => \$logopsect,
1114 loop => \$loopsect, op => \$opsect, pmop => \$pmopsect,
1115 pvop => \$pvopsect, svop => \$svopsect, unop => \$unopsect,
1116 sv => \$svsect, xpv => \$xpvsect, xpvav => \$xpvavsect,
1117 xpvhv => \$xpvhvsect, xpvcv => \$xpvcvsect,
1118 xpviv => \$xpvivsect, xpvnv => \$xpvnvsect,
1119 xpvmg => \$xpvmgsect, xpvlv => \$xpvlvsect,
1120 xrv => \$xrvsect, xpvbm => \$xpvbmsect,
1121 xpvio => \$xpviosect);
1122 my ($name, $sectref);
1123 while (($name, $sectref) = splice(@sections, 0, 2)) {
1124 $$sectref = new B::Section $name, \%symtable, 0;
1125 }
1126}
1127
1128sub compile {
1129 my @options = @_;
1130 my ($option, $opt, $arg);
1131 OPTION:
1132 while ($option = shift @options) {
1133 if ($option =~ /^-(.)(.*)/) {
1134 $opt = $1;
1135 $arg = $2;
1136 } else {
1137 unshift @options, $option;
1138 last OPTION;
1139 }
1140 if ($opt eq "-" && $arg eq "-") {
1141 shift @options;
1142 last OPTION;
1143 }
1144 if ($opt eq "w") {
1145 $warn_undefined_syms = 1;
1146 } elsif ($opt eq "D") {
1147 $arg ||= shift @options;
1148 foreach $arg (split(//, $arg)) {
1149 if ($arg eq "o") {
1150 B->debug(1);
1151 } elsif ($arg eq "c") {
1152 $debug_cops = 1;
1153 } elsif ($arg eq "A") {
1154 $debug_av = 1;
1155 } elsif ($arg eq "C") {
1156 $debug_cv = 1;
1157 } elsif ($arg eq "M") {
1158 $debug_mg = 1;
1159 } else {
1160 warn "ignoring unknown debug option: $arg\n";
1161 }
1162 }
1163 } elsif ($opt eq "o") {
1164 $arg ||= shift @options;
1165 open(STDOUT, ">$arg") or return "$arg: $!\n";
1166 } elsif ($opt eq "v") {
1167 $verbose = 1;
1168 } elsif ($opt eq "u") {
1169 $arg ||= shift @options;
1170 push(@unused_sub_packages, $arg);
1171 } elsif ($opt eq "f") {
1172 $arg ||= shift @options;
1173 if ($arg eq "cog") {
1174 $pv_copy_on_grow = 1;
1175 } elsif ($arg eq "no-cog") {
1176 $pv_copy_on_grow = 0;
1177 }
1178 } elsif ($opt eq "O") {
1179 $arg = 1 if $arg eq "";
1180 $pv_copy_on_grow = 0;
1181 if ($arg >= 1) {
1182 # Optimisations for -O1
1183 $pv_copy_on_grow = 1;
1184 }
1185 }
1186 }
1187 init_sections();
1188 if (@options) {
1189 return sub {
1190 my $objname;
1191 foreach $objname (@options) {
1192 eval "save_object(\\$objname)";
1193 }
1194 output_all();
1195 }
1196 } else {
1197 return sub { save_main() };
1198 }
1199}
1200
12011;
Unnamed repository; edit this file 'description' to name the repository.