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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 | # |
8 | package B::C; |
9 | use 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 | |
14 | use 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); |
17 | use B::Asmdata qw(@specialsv_name); |
18 | |
19 | use FileHandle; |
20 | use Carp; |
21 | use strict; |
22 | |
23 | my $hv_index = 0; |
24 | my $gv_index = 0; |
25 | my $re_index = 0; |
26 | my $pv_index = 0; |
27 | my $anonsub_index = 0; |
28 | |
29 | my %symtable; |
30 | my $warn_undefined_syms; |
31 | my $verbose; |
32 | my @unused_sub_packages; |
33 | my $nullop_count; |
34 | my $pv_copy_on_grow; |
35 | my ($debug_cops, $debug_av, $debug_cv, $debug_mg); |
36 | |
37 | my @threadsv_names; |
38 | BEGIN { |
39 | @threadsv_names = threadsv_names(); |
40 | } |
41 | |
42 | # Code sections |
43 | my ($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 | |
49 | sub walk_and_save_optree; |
50 | my $saveoptree_callback = \&walk_and_save_optree; |
51 | sub set_callback { $saveoptree_callback = shift } |
52 | sub saveoptree { &$saveoptree_callback(@_) } |
53 | |
54 | sub 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. |
67 | my $op_seq = 65535; |
68 | |
69 | sub AVf_REAL () { 1 } |
70 | |
71 | # XXX This shouldn't really be hardcoded here but it saves |
72 | # looking up the name of every BASEOP in B::OP |
73 | sub OP_THREADSV () { 345 } |
74 | |
75 | sub savesym { |
76 | my ($obj, $value) = @_; |
77 | my $sym = sprintf("s\\_%x", $$obj); |
78 | $symtable{$sym} = $value; |
79 | } |
80 | |
81 | sub objsym { |
82 | my $obj = shift; |
83 | return $symtable{sprintf("s\\_%x", $$obj)}; |
84 | } |
85 | |
86 | sub 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 | |
100 | sub 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, $pvmax); |
114 | } |
115 | |
116 | sub B::OP::save { |
117 | my ($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]", $opsect->index)); |
129 | } |
130 | |
131 | sub B::FAKEOP::new { |
132 | my ($class, %objdata) = @_; |
133 | bless \%objdata, $class; |
134 | } |
135 | |
136 | sub B::FAKEOP::save { |
137 | my ($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 | |
144 | sub B::FAKEOP::next { $_[0]->{"next"} || 0 } |
145 | sub B::FAKEOP::type { $_[0]->{type} || 0} |
146 | sub B::FAKEOP::sibling { $_[0]->{sibling} || 0 } |
147 | sub B::FAKEOP::ppaddr { $_[0]->{ppaddr} || 0 } |
148 | sub B::FAKEOP::targ { $_[0]->{targ} || 0 } |
149 | sub B::FAKEOP::flags { $_[0]->{flags} || 0 } |
150 | sub B::FAKEOP::private { $_[0]->{private} || 0 } |
151 | |
152 | sub B::UNOP::save { |
153 | my ($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]", $unopsect->index)); |
159 | } |
160 | |
161 | sub B::BINOP::save { |
162 | my ($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]", $binopsect->index)); |
168 | } |
169 | |
170 | sub B::LISTOP::save { |
171 | my ($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]", $listopsect->index)); |
178 | } |
179 | |
180 | sub B::LOGOP::save { |
181 | my ($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]", $logopsect->index)); |
187 | } |
188 | |
189 | sub B::CONDOP::save { |
190 | my ($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]", $condopsect->index)); |
197 | } |
198 | |
199 | sub B::LOOP::save { |
200 | my ($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]", $loopsect->index)); |
211 | } |
212 | |
213 | sub B::PVOP::save { |
214 | my ($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]", $pvopsect->index)); |
220 | } |
221 | |
222 | sub B::SVOP::save { |
223 | my ($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]", $svopsect->index)); |
230 | } |
231 | |
232 | sub B::GVOP::save { |
233 | my ($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]", $gvopsect->index)); |
241 | } |
242 | |
243 | sub B::COP::save { |
244 | my ($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[$copix]"); |
258 | } |
259 | |
260 | sub B::PMOP::save { |
261 | my ($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 ($$replroot) { |
269 | # OP_PUSHRE (a mutated version of OP_MATCH for the regexp |
270 | # argument to a split) stores a GV in op_pmreplroot instead |
271 | # of a substitution syntax tree. We don't want to walk that... |
272 | if ($ppaddr eq "pp_pushre") { |
273 | $gvsym = $replroot->save; |
274 | # warn "PMOP::save saving a pp_pushre with GV $gvsym\n"; # debug |
275 | $replrootfield = 0; |
276 | } else { |
277 | $replstartfield = saveoptree("*ignore*", $replroot, $replstart); |
278 | } |
279 | } |
280 | # pmnext handling is broken in perl itself, I think. Bad op_pmnext |
281 | # fields aren't noticed in perl's runtime (unless you try reset) but we |
282 | # segfault when trying to dereference it to find op->op_pmnext->op_type |
283 | $pmopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, %u, %s, %s, 0, 0, 0x%x, 0x%x", |
284 | ${$op->next}, ${$op->sibling}, $ppaddr, $op->targ, |
285 | $op->type, $op_seq, $op->flags, $op->private, |
286 | ${$op->first}, ${$op->last}, $op->children, |
287 | $replrootfield, $replstartfield, |
288 | $op->pmflags, $op->pmpermflags,)); |
289 | my $pm = sprintf("pmop_list[%d]", $pmopsect->index); |
290 | my $re = $op->precomp; |
291 | if (defined($re)) { |
292 | my $resym = sprintf("re%d", $re_index++); |
293 | $decl->add(sprintf("static char *$resym = %s;", cstring($re))); |
294 | $init->add(sprintf("$pm.op_pmregexp = pregcomp($resym, $resym + %u, &$pm);", |
295 | length($re))); |
296 | } |
297 | if ($gvsym) { |
298 | $init->add("$pm.op_pmreplroot = (OP*)$gvsym;"); |
299 | } |
300 | savesym($op, sprintf("(OP*)&pmop_list[%d]", $pmopsect->index)); |
301 | } |
302 | |
303 | sub B::SPECIAL::save { |
304 | my ($sv) = @_; |
305 | # special case: $$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 $$sv passed to B::SPECIAL::save"; |
310 | } |
311 | return $sym; |
312 | } |
313 | |
314 | sub B::OBJECT::save {} |
315 | |
316 | sub B::NULL::save { |
317 | my ($sv) = @_; |
318 | my $sym = objsym($sv); |
319 | return $sym if defined $sym; |
320 | # warn "Saving SVt_NULL SV\n"; # debug |
321 | # debug |
322 | #if ($$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]", $svsect->index)); |
327 | } |
328 | |
329 | sub B::IV::save { |
330 | my ($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]", $svsect->index)); |
337 | } |
338 | |
339 | sub B::NV::save { |
340 | my ($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]", $svsect->index)); |
347 | } |
348 | |
349 | sub B::PVLV::save { |
350 | my ($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]", $svsect->index)); |
368 | } |
369 | |
370 | sub B::PVIV::save { |
371 | my ($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]", $svsect->index)); |
385 | } |
386 | |
387 | sub B::PVNV::save { |
388 | my ($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]", $svsect->index)); |
403 | } |
404 | |
405 | sub B::BM::save { |
406 | my ($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]", $svsect->index)); |
422 | } |
423 | |
424 | sub B::PV::save { |
425 | my ($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]", $svsect->index)); |
439 | } |
440 | |
441 | sub B::PVMG::save { |
442 | my ($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 $sym; |
459 | } |
460 | |
461 | sub B::PVMG::save_magic { |
462 | my ($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, $$obj, cchar($type),cstring($ptr),$len)); |
485 | } |
486 | } |
487 | |
488 | sub B::RV::save { |
489 | my ($sv) = @_; |
490 | my $sym = objsym($sv); |
491 | return $sym if defined $sym; |
492 | $xrvsect->add($sv->RV->save); |
493 | $svsect->add(sprintf("&xrv_list[%d], %lu, 0x%x", |
494 | $xrvsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
495 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
496 | } |
497 | |
498 | sub try_autoload { |
499 | my ($cvstashname, $cvname) = @_; |
500 | warn sprintf("No definition for sub %s::%s\n", $cvstashname, $cvname); |
501 | # Handle AutoLoader classes explicitly. Any more general AUTOLOAD |
502 | # use should be handled by the class itself. |
503 | no strict 'refs'; |
504 | my $isa = \@{"$cvstashname\::ISA"}; |
505 | if (grep($_ eq "AutoLoader", @$isa)) { |
506 | warn "Forcing immediate load of sub derived from AutoLoader\n"; |
507 | # Tweaked version of AutoLoader::AUTOLOAD |
508 | my $dir = $cvstashname; |
509 | $dir =~ s(::)(/)g; |
510 | eval { require "auto/$dir/$cvname.al" }; |
511 | if ($@) { |
512 | warn qq(failed require "auto/$dir/$cvname.al": $@\n); |
513 | return 0; |
514 | } else { |
515 | return 1; |
516 | } |
517 | } |
518 | } |
519 | |
520 | sub B::CV::save { |
521 | my ($cv) = @_; |
522 | my $sym = objsym($cv); |
523 | if (defined($sym)) { |
524 | # warn sprintf("CV 0x%x already saved as $sym\n", $$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, $$cv) if $debug_cv; |
622 | } |
623 | $symsect->add(sprintf("svix%d\t(XPVCV*)&xpvcv_list[%u], %lu, 0x%x", |
624 | $sv_ix, $xpvcv_ix, $cv->REFCNT + 1, $cv->FLAGS)); |
625 | return $sym; |
626 | } |
627 | |
628 | sub B::GV::save { |
629 | my ($gv) = @_; |
630 | my $sym = objsym($gv); |
631 | if (defined($sym)) { |
632 | #warn sprintf("GV 0x%x already saved as $sym\n", $$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;", $$gvio)); |
707 | # warn "GV::save GvIO(*$name)\n"; # debug |
708 | $gvio->save; |
709 | } |
710 | } |
711 | return $sym; |
712 | } |
713 | sub B::AV::save { |
714 | my ($av) = @_; |
715 | my $sym = objsym($av); |
716 | return $sym if defined $sym; |
717 | my $avflags = $av->AvFLAGS; |
718 | $xpvavsect->add(sprintf("0, -1, -1, 0, 0.0, 0, Nullhv, 0, 0, 0x%x", |
719 | $avflags)); |
720 | $svsect->add(sprintf("&xpvav_list[%d], %lu, 0x%x", |
721 | $xpvavsect->index, $av->REFCNT + 1, $av->FLAGS)); |
722 | my $sv_list_index = $svsect->index; |
723 | my $fill = $av->FILL; |
724 | $av->save_magic; |
725 | warn sprintf("saving AV 0x%x FILL=$fill AvFLAGS=0x%x", $$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[$sv_list_index]"); |
757 | } |
758 | |
759 | sub B::HV::save { |
760 | my ($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[$sv_list_index]"); |
804 | } |
805 | |
806 | sub B::IO::save { |
807 | my ($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 | |
833 | sub 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 | |
842 | sub 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"; |
875 | static int $init_name() |
876 | { |
877 | dTHR; |
878 | EOT |
879 | $init->output(\*STDOUT, "\t%s\n"); |
880 | print "\treturn 0;\n}\n"; |
881 | if ($verbose) { |
882 | warn compile_stats(); |
883 | warn "NULLOP count: $nullop_count\n"; |
884 | } |
885 | } |
886 | |
887 | sub output_declarations { |
888 | print <<'EOT'; |
889 | #ifdef BROKEN_STATIC_REDECL |
890 | #define Static extern |
891 | #else |
892 | #define Static static |
893 | #endif /* BROKEN_STATIC_REDECL */ |
894 | |
895 | #ifdef BROKEN_UNION_INIT |
896 | /* |
897 | * Cribbed from cv.h with ANY (a union) replaced by void*. |
898 | * Some pre-Standard compilers can't cope with initialising unions. Ho hum. |
899 | */ |
900 | typedef struct { |
901 | char * xpv_pv; /* pointer to malloced string */ |
902 | STRLEN xpv_cur; /* length of xp_pv as a C string */ |
903 | STRLEN xpv_len; /* allocated size */ |
904 | IV xof_off; /* integer value */ |
905 | double xnv_nv; /* numeric value, if any */ |
906 | MAGIC* xmg_magic; /* magic for scalar array */ |
907 | HV* xmg_stash; /* class package */ |
908 | |
909 | HV * xcv_stash; |
910 | OP * xcv_start; |
911 | OP * xcv_root; |
912 | void (*xcv_xsub) _((CV*)); |
913 | void * xcv_xsubany; |
914 | GV * xcv_gv; |
915 | GV * xcv_filegv; |
916 | long xcv_depth; /* >= 2 indicates recursive call */ |
917 | AV * xcv_padlist; |
918 | CV * xcv_outside; |
919 | #ifdef USE_THREADS |
920 | perl_mutex *xcv_mutexp; |
921 | struct perl_thread *xcv_owner; /* current owner thread */ |
922 | #endif /* USE_THREADS */ |
923 | U8 xcv_flags; |
924 | } XPVCV_or_similar; |
925 | #define ANYINIT(i) i |
926 | #else |
927 | #define XPVCV_or_similar XPVCV |
928 | #define ANYINIT(i) {i} |
929 | #endif /* BROKEN_UNION_INIT */ |
930 | #define Nullany ANYINIT(0) |
931 | |
932 | #define UNUSED 0 |
933 | #define sym_0 0 |
934 | |
935 | EOT |
936 | print "static GV *gv_list[$gv_index];\n" if $gv_index; |
937 | print "\n"; |
938 | } |
939 | |
940 | |
941 | sub 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 | |
953 | static void xs_init _((void)); |
954 | static PerlInterpreter *my_perl; |
955 | EOT |
956 | } |
957 | |
958 | sub output_main { |
959 | print <<'EOT'; |
960 | int |
961 | #ifndef CAN_PROTOTYPE |
962 | main(argc, argv, env) |
963 | int argc; |
964 | char **argv; |
965 | char **env; |
966 | #else /* def(CAN_PROTOTYPE) */ |
967 | main(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 | |
1027 | static void |
1028 | xs_init() |
1029 | { |
1030 | } |
1031 | EOT |
1032 | } |
1033 | |
1034 | sub 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 | |
1044 | sub save_object { |
1045 | my $sv; |
1046 | foreach $sv (@_) { |
1047 | svref_2object($sv)->save; |
1048 | } |
1049 | } |
1050 | |
1051 | sub 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 | |
1064 | sub 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 | |
1093 | sub 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 | |
1109 | sub 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 $name, \%symtable, 0; |
1125 | } |
1126 | } |
1127 | |
1128 | sub compile { |
1129 | my @options = @_; |
1130 | my ($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 | |
1201 | 1; |