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1 | # C.pm |
2 | # | |
1a52ab62 | 3 | # Copyright (c) 1996, 1997, 1998 Malcolm Beattie |
a798dbf2 MB |
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 | # | |
66a2622e NIS |
8 | package B::C::Section; |
9 | use B (); | |
10 | use base B::Section; | |
11 | ||
12 | sub new | |
13 | { | |
14 | my $class = shift; | |
15 | my $o = $class->SUPER::new(@_); | |
16 | push(@$o,[]); | |
17 | return $o; | |
18 | } | |
19 | ||
20 | sub add | |
21 | { | |
22 | my $section = shift; | |
23 | push(@{$section->[-1]},@_); | |
24 | } | |
25 | ||
26 | sub index | |
27 | { | |
28 | my $section = shift; | |
29 | return scalar(@{$section->[-1]})-1; | |
30 | } | |
31 | ||
32 | sub output | |
33 | { | |
34 | my ($section, $fh, $format) = @_; | |
35 | my $sym = $section->symtable || {}; | |
36 | my $default = $section->default; | |
37 | foreach (@{$section->[-1]}) | |
38 | { | |
39 | s{(s\\_[0-9a-f]+)}{ exists($sym->{$1}) ? $sym->{$1} : $default; }ge; | |
40 | printf $fh $format, $_; | |
41 | } | |
42 | } | |
43 | ||
a798dbf2 MB |
44 | package B::C; |
45 | use Exporter (); | |
46 | @ISA = qw(Exporter); | |
47 | @EXPORT_OK = qw(output_all output_boilerplate output_main | |
48 | init_sections set_callback save_unused_subs objsym); | |
49 | ||
50 | use B qw(minus_c sv_undef walkoptree walksymtable main_root main_start peekop | |
51 | class cstring cchar svref_2object compile_stats comppadlist hash | |
31d7d75a | 52 | threadsv_names main_cv init_av); |
a798dbf2 MB |
53 | use B::Asmdata qw(@specialsv_name); |
54 | ||
55 | use FileHandle; | |
56 | use Carp; | |
57 | use strict; | |
58 | ||
59 | my $hv_index = 0; | |
60 | my $gv_index = 0; | |
61 | my $re_index = 0; | |
62 | my $pv_index = 0; | |
63 | my $anonsub_index = 0; | |
44887cfa | 64 | my $initsub_index = 0; |
a798dbf2 MB |
65 | |
66 | my %symtable; | |
67 | my $warn_undefined_syms; | |
68 | my $verbose; | |
66a2622e | 69 | my %unused_sub_packages; |
a798dbf2 | 70 | my $nullop_count; |
66a2622e | 71 | my $pv_copy_on_grow = 0; |
a798dbf2 MB |
72 | my ($debug_cops, $debug_av, $debug_cv, $debug_mg); |
73 | ||
74 | my @threadsv_names; | |
75 | BEGIN { | |
76 | @threadsv_names = threadsv_names(); | |
77 | } | |
78 | ||
79 | # Code sections | |
66a2622e | 80 | my ($init, $decl, $symsect, $binopsect, $condopsect, $copsect, |
a798dbf2 MB |
81 | $gvopsect, $listopsect, $logopsect, $loopsect, $opsect, $pmopsect, |
82 | $pvopsect, $svopsect, $unopsect, $svsect, $xpvsect, $xpvavsect, | |
83 | $xpvhvsect, $xpvcvsect, $xpvivsect, $xpvnvsect, $xpvmgsect, $xpvlvsect, | |
31d7d75a | 84 | $xrvsect, $xpvbmsect, $xpviosect, $bootstrap); |
a798dbf2 MB |
85 | |
86 | sub walk_and_save_optree; | |
87 | my $saveoptree_callback = \&walk_and_save_optree; | |
88 | sub set_callback { $saveoptree_callback = shift } | |
89 | sub saveoptree { &$saveoptree_callback(@_) } | |
90 | ||
91 | sub walk_and_save_optree { | |
92 | my ($name, $root, $start) = @_; | |
93 | walkoptree($root, "save"); | |
94 | return objsym($start); | |
95 | } | |
96 | ||
97 | # Current workaround/fix for op_free() trying to free statically | |
98 | # defined OPs is to set op_seq = -1 and check for that in op_free(). | |
99 | # Instead of hardwiring -1 in place of $op->seq, we use $op_seq | |
100 | # so that it can be changed back easily if necessary. In fact, to | |
101 | # stop compilers from moaning about a U16 being initialised with an | |
102 | # uncast -1 (the printf format is %d so we can't tweak it), we have | |
103 | # to "know" that op_seq is a U16 and use 65535. Ugh. | |
104 | my $op_seq = 65535; | |
105 | ||
106 | sub AVf_REAL () { 1 } | |
107 | ||
108 | # XXX This shouldn't really be hardcoded here but it saves | |
109 | # looking up the name of every BASEOP in B::OP | |
110 | sub OP_THREADSV () { 345 } | |
111 | ||
112 | sub savesym { | |
113 | my ($obj, $value) = @_; | |
114 | my $sym = sprintf("s\\_%x", $$obj); | |
115 | $symtable{$sym} = $value; | |
116 | } | |
117 | ||
118 | sub objsym { | |
119 | my $obj = shift; | |
120 | return $symtable{sprintf("s\\_%x", $$obj)}; | |
121 | } | |
122 | ||
123 | sub getsym { | |
124 | my $sym = shift; | |
125 | my $value; | |
126 | ||
127 | return 0 if $sym eq "sym_0"; # special case | |
128 | $value = $symtable{$sym}; | |
129 | if (defined($value)) { | |
130 | return $value; | |
131 | } else { | |
132 | warn "warning: undefined symbol $sym\n" if $warn_undefined_syms; | |
133 | return "UNUSED"; | |
134 | } | |
135 | } | |
136 | ||
137 | sub savepv { | |
66a2622e NIS |
138 | my $pv = shift; |
139 | $pv = '' unless defined $pv; # Is this sane ? | |
a798dbf2 MB |
140 | my $pvsym = 0; |
141 | my $pvmax = 0; | |
66a2622e | 142 | if ($pv_copy_on_grow) { |
a798dbf2 MB |
143 | my $cstring = cstring($pv); |
144 | if ($cstring ne "0") { # sic | |
145 | $pvsym = sprintf("pv%d", $pv_index++); | |
146 | $decl->add(sprintf("static char %s[] = %s;", $pvsym, $cstring)); | |
147 | } | |
148 | } else { | |
149 | $pvmax = length($pv) + 1; | |
150 | } | |
151 | return ($pvsym, $pvmax); | |
152 | } | |
153 | ||
154 | sub B::OP::save { | |
155 | my ($op, $level) = @_; | |
156 | my $type = $op->type; | |
157 | $nullop_count++ unless $type; | |
158 | if ($type == OP_THREADSV) { | |
159 | # saves looking up ppaddr but it's a bit naughty to hard code this | |
160 | $init->add(sprintf("(void)find_threadsv(%s);", | |
161 | cstring($threadsv_names[$op->targ]))); | |
162 | } | |
163 | $opsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x", | |
164 | ${$op->next}, ${$op->sibling}, $op->ppaddr, $op->targ, | |
165 | $type, $op_seq, $op->flags, $op->private)); | |
166 | savesym($op, sprintf("&op_list[%d]", $opsect->index)); | |
167 | } | |
168 | ||
169 | sub B::FAKEOP::new { | |
170 | my ($class, %objdata) = @_; | |
171 | bless \%objdata, $class; | |
172 | } | |
173 | ||
174 | sub B::FAKEOP::save { | |
175 | my ($op, $level) = @_; | |
176 | $opsect->add(sprintf("%s, %s, %s, %u, %u, %u, 0x%x, 0x%x", | |
177 | $op->next, $op->sibling, $op->ppaddr, $op->targ, | |
178 | $op->type, $op_seq, $op->flags, $op->private)); | |
179 | return sprintf("&op_list[%d]", $opsect->index); | |
180 | } | |
181 | ||
182 | sub B::FAKEOP::next { $_[0]->{"next"} || 0 } | |
183 | sub B::FAKEOP::type { $_[0]->{type} || 0} | |
184 | sub B::FAKEOP::sibling { $_[0]->{sibling} || 0 } | |
185 | sub B::FAKEOP::ppaddr { $_[0]->{ppaddr} || 0 } | |
186 | sub B::FAKEOP::targ { $_[0]->{targ} || 0 } | |
187 | sub B::FAKEOP::flags { $_[0]->{flags} || 0 } | |
188 | sub B::FAKEOP::private { $_[0]->{private} || 0 } | |
189 | ||
190 | sub B::UNOP::save { | |
191 | my ($op, $level) = @_; | |
192 | $unopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x", | |
193 | ${$op->next}, ${$op->sibling}, $op->ppaddr, | |
194 | $op->targ, $op->type, $op_seq, $op->flags, | |
195 | $op->private, ${$op->first})); | |
196 | savesym($op, sprintf("(OP*)&unop_list[%d]", $unopsect->index)); | |
197 | } | |
198 | ||
199 | sub B::BINOP::save { | |
200 | my ($op, $level) = @_; | |
201 | $binopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x", | |
202 | ${$op->next}, ${$op->sibling}, $op->ppaddr, | |
203 | $op->targ, $op->type, $op_seq, $op->flags, | |
204 | $op->private, ${$op->first}, ${$op->last})); | |
205 | savesym($op, sprintf("(OP*)&binop_list[%d]", $binopsect->index)); | |
206 | } | |
207 | ||
208 | sub B::LISTOP::save { | |
209 | my ($op, $level) = @_; | |
210 | $listopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, %u", | |
211 | ${$op->next}, ${$op->sibling}, $op->ppaddr, | |
212 | $op->targ, $op->type, $op_seq, $op->flags, | |
213 | $op->private, ${$op->first}, ${$op->last}, | |
214 | $op->children)); | |
215 | savesym($op, sprintf("(OP*)&listop_list[%d]", $listopsect->index)); | |
216 | } | |
217 | ||
218 | sub B::LOGOP::save { | |
219 | my ($op, $level) = @_; | |
220 | $logopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x", | |
221 | ${$op->next}, ${$op->sibling}, $op->ppaddr, | |
222 | $op->targ, $op->type, $op_seq, $op->flags, | |
223 | $op->private, ${$op->first}, ${$op->other})); | |
224 | savesym($op, sprintf("(OP*)&logop_list[%d]", $logopsect->index)); | |
225 | } | |
226 | ||
227 | sub B::CONDOP::save { | |
228 | my ($op, $level) = @_; | |
229 | $condopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, s\\_%x", | |
230 | ${$op->next}, ${$op->sibling}, $op->ppaddr, | |
231 | $op->targ, $op->type, $op_seq, $op->flags, | |
232 | $op->private, ${$op->first}, ${$op->true}, | |
233 | ${$op->false})); | |
234 | savesym($op, sprintf("(OP*)&condop_list[%d]", $condopsect->index)); | |
235 | } | |
236 | ||
237 | sub B::LOOP::save { | |
238 | my ($op, $level) = @_; | |
239 | #warn sprintf("LOOP: redoop %s, nextop %s, lastop %s\n", | |
240 | # peekop($op->redoop), peekop($op->nextop), | |
241 | # peekop($op->lastop)); # debug | |
242 | $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", | |
243 | ${$op->next}, ${$op->sibling}, $op->ppaddr, | |
244 | $op->targ, $op->type, $op_seq, $op->flags, | |
245 | $op->private, ${$op->first}, ${$op->last}, | |
246 | $op->children, ${$op->redoop}, ${$op->nextop}, | |
247 | ${$op->lastop})); | |
248 | savesym($op, sprintf("(OP*)&loop_list[%d]", $loopsect->index)); | |
249 | } | |
250 | ||
251 | sub B::PVOP::save { | |
252 | my ($op, $level) = @_; | |
253 | $pvopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, %s", | |
254 | ${$op->next}, ${$op->sibling}, $op->ppaddr, | |
255 | $op->targ, $op->type, $op_seq, $op->flags, | |
256 | $op->private, cstring($op->pv))); | |
257 | savesym($op, sprintf("(OP*)&pvop_list[%d]", $pvopsect->index)); | |
258 | } | |
259 | ||
260 | sub B::SVOP::save { | |
261 | my ($op, $level) = @_; | |
262 | my $svsym = $op->sv->save; | |
263 | $svopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, %s", | |
264 | ${$op->next}, ${$op->sibling}, $op->ppaddr, | |
265 | $op->targ, $op->type, $op_seq, $op->flags, | |
266 | $op->private, "(SV*)$svsym")); | |
267 | savesym($op, sprintf("(OP*)&svop_list[%d]", $svopsect->index)); | |
268 | } | |
269 | ||
270 | sub B::GVOP::save { | |
271 | my ($op, $level) = @_; | |
272 | my $gvsym = $op->gv->save; | |
273 | $gvopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, Nullgv", | |
274 | ${$op->next}, ${$op->sibling}, $op->ppaddr, | |
275 | $op->targ, $op->type, $op_seq, $op->flags, | |
276 | $op->private)); | |
277 | $init->add(sprintf("gvop_list[%d].op_gv = %s;", $gvopsect->index, $gvsym)); | |
278 | savesym($op, sprintf("(OP*)&gvop_list[%d]", $gvopsect->index)); | |
279 | } | |
280 | ||
281 | sub B::COP::save { | |
282 | my ($op, $level) = @_; | |
283 | my $gvsym = $op->filegv->save; | |
284 | my $stashsym = $op->stash->save; | |
285 | warn sprintf("COP: line %d file %s\n", $op->line, $op->filegv->SV->PV) | |
286 | if $debug_cops; | |
287 | $copsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, %s, Nullhv, Nullgv, %u, %d, %u", | |
288 | ${$op->next}, ${$op->sibling}, $op->ppaddr, | |
289 | $op->targ, $op->type, $op_seq, $op->flags, | |
290 | $op->private, cstring($op->label), $op->cop_seq, | |
291 | $op->arybase, $op->line)); | |
292 | my $copix = $copsect->index; | |
293 | $init->add(sprintf("cop_list[%d].cop_filegv = %s;", $copix, $gvsym), | |
294 | sprintf("cop_list[%d].cop_stash = %s;", $copix, $stashsym)); | |
295 | savesym($op, "(OP*)&cop_list[$copix]"); | |
296 | } | |
297 | ||
298 | sub B::PMOP::save { | |
299 | my ($op, $level) = @_; | |
300 | my $replroot = $op->pmreplroot; | |
301 | my $replstart = $op->pmreplstart; | |
302 | my $replrootfield = sprintf("s\\_%x", $$replroot); | |
303 | my $replstartfield = sprintf("s\\_%x", $$replstart); | |
304 | my $gvsym; | |
305 | my $ppaddr = $op->ppaddr; | |
306 | if ($$replroot) { | |
307 | # OP_PUSHRE (a mutated version of OP_MATCH for the regexp | |
308 | # argument to a split) stores a GV in op_pmreplroot instead | |
309 | # of a substitution syntax tree. We don't want to walk that... | |
310 | if ($ppaddr eq "pp_pushre") { | |
311 | $gvsym = $replroot->save; | |
312 | # warn "PMOP::save saving a pp_pushre with GV $gvsym\n"; # debug | |
313 | $replrootfield = 0; | |
314 | } else { | |
315 | $replstartfield = saveoptree("*ignore*", $replroot, $replstart); | |
316 | } | |
317 | } | |
318 | # pmnext handling is broken in perl itself, I think. Bad op_pmnext | |
319 | # fields aren't noticed in perl's runtime (unless you try reset) but we | |
320 | # segfault when trying to dereference it to find op->op_pmnext->op_type | |
321 | $pmopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, %u, %s, %s, 0, 0, 0x%x, 0x%x", | |
322 | ${$op->next}, ${$op->sibling}, $ppaddr, $op->targ, | |
323 | $op->type, $op_seq, $op->flags, $op->private, | |
324 | ${$op->first}, ${$op->last}, $op->children, | |
325 | $replrootfield, $replstartfield, | |
326 | $op->pmflags, $op->pmpermflags,)); | |
327 | my $pm = sprintf("pmop_list[%d]", $pmopsect->index); | |
328 | my $re = $op->precomp; | |
329 | if (defined($re)) { | |
330 | my $resym = sprintf("re%d", $re_index++); | |
331 | $decl->add(sprintf("static char *$resym = %s;", cstring($re))); | |
332 | $init->add(sprintf("$pm.op_pmregexp = pregcomp($resym, $resym + %u, &$pm);", | |
333 | length($re))); | |
334 | } | |
335 | if ($gvsym) { | |
336 | $init->add("$pm.op_pmreplroot = (OP*)$gvsym;"); | |
337 | } | |
338 | savesym($op, sprintf("(OP*)&pmop_list[%d]", $pmopsect->index)); | |
339 | } | |
340 | ||
341 | sub B::SPECIAL::save { | |
342 | my ($sv) = @_; | |
343 | # special case: $$sv is not the address but an index into specialsv_list | |
344 | # warn "SPECIAL::save specialsv $$sv\n"; # debug | |
345 | my $sym = $specialsv_name[$$sv]; | |
346 | if (!defined($sym)) { | |
347 | confess "unknown specialsv index $$sv passed to B::SPECIAL::save"; | |
348 | } | |
349 | return $sym; | |
350 | } | |
351 | ||
352 | sub B::OBJECT::save {} | |
353 | ||
354 | sub B::NULL::save { | |
355 | my ($sv) = @_; | |
356 | my $sym = objsym($sv); | |
357 | return $sym if defined $sym; | |
358 | # warn "Saving SVt_NULL SV\n"; # debug | |
359 | # debug | |
360 | #if ($$sv == 0) { | |
361 | # warn "NULL::save for sv = 0 called from @{[(caller(1))[3]]}\n"; | |
362 | #} | |
363 | $svsect->add(sprintf("0, %u, 0x%x", $sv->REFCNT + 1, $sv->FLAGS)); | |
364 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); | |
365 | } | |
366 | ||
367 | sub B::IV::save { | |
368 | my ($sv) = @_; | |
369 | my $sym = objsym($sv); | |
370 | return $sym if defined $sym; | |
371 | $xpvivsect->add(sprintf("0, 0, 0, %d", $sv->IVX)); | |
372 | $svsect->add(sprintf("&xpviv_list[%d], %lu, 0x%x", | |
373 | $xpvivsect->index, $sv->REFCNT + 1, $sv->FLAGS)); | |
374 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); | |
375 | } | |
376 | ||
377 | sub B::NV::save { | |
378 | my ($sv) = @_; | |
379 | my $sym = objsym($sv); | |
380 | return $sym if defined $sym; | |
381 | $xpvnvsect->add(sprintf("0, 0, 0, %d, %s", $sv->IVX, $sv->NVX)); | |
382 | $svsect->add(sprintf("&xpvnv_list[%d], %lu, 0x%x", | |
383 | $xpvnvsect->index, $sv->REFCNT + 1, $sv->FLAGS)); | |
384 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); | |
385 | } | |
386 | ||
387 | sub B::PVLV::save { | |
388 | my ($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 | my ($lvtarg, $lvtarg_sym); | |
395 | $xpvlvsect->add(sprintf("%s, %u, %u, %d, %g, 0, 0, %u, %u, 0, %s", | |
396 | $pvsym, $len, $pvmax, $sv->IVX, $sv->NVX, | |
397 | $sv->TARGOFF, $sv->TARGLEN, cchar($sv->TYPE))); | |
398 | $svsect->add(sprintf("&xpvlv_list[%d], %lu, 0x%x", | |
399 | $xpvlvsect->index, $sv->REFCNT + 1, $sv->FLAGS)); | |
400 | if (!$pv_copy_on_grow) { | |
401 | $init->add(sprintf("xpvlv_list[%d].xpv_pv = savepvn(%s, %u);", | |
402 | $xpvlvsect->index, cstring($pv), $len)); | |
403 | } | |
404 | $sv->save_magic; | |
405 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); | |
406 | } | |
407 | ||
408 | sub B::PVIV::save { | |
409 | my ($sv) = @_; | |
410 | my $sym = objsym($sv); | |
411 | return $sym if defined $sym; | |
412 | my $pv = $sv->PV; | |
413 | my $len = length($pv); | |
414 | my ($pvsym, $pvmax) = savepv($pv); | |
415 | $xpvivsect->add(sprintf("%s, %u, %u, %d", $pvsym, $len, $pvmax, $sv->IVX)); | |
416 | $svsect->add(sprintf("&xpviv_list[%d], %u, 0x%x", | |
417 | $xpvivsect->index, $sv->REFCNT + 1, $sv->FLAGS)); | |
418 | if (!$pv_copy_on_grow) { | |
419 | $init->add(sprintf("xpviv_list[%d].xpv_pv = savepvn(%s, %u);", | |
420 | $xpvivsect->index, cstring($pv), $len)); | |
421 | } | |
422 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); | |
423 | } | |
424 | ||
425 | sub B::PVNV::save { | |
426 | my ($sv) = @_; | |
427 | my $sym = objsym($sv); | |
428 | return $sym if defined $sym; | |
66a2622e NIS |
429 | my $pv = $sv->PV; |
430 | $pv = '' unless defined $pv; | |
a798dbf2 MB |
431 | my $len = length($pv); |
432 | my ($pvsym, $pvmax) = savepv($pv); | |
433 | $xpvnvsect->add(sprintf("%s, %u, %u, %d, %s", | |
434 | $pvsym, $len, $pvmax, $sv->IVX, $sv->NVX)); | |
435 | $svsect->add(sprintf("&xpvnv_list[%d], %lu, 0x%x", | |
436 | $xpvnvsect->index, $sv->REFCNT + 1, $sv->FLAGS)); | |
437 | if (!$pv_copy_on_grow) { | |
438 | $init->add(sprintf("xpvnv_list[%d].xpv_pv = savepvn(%s,%u);", | |
439 | $xpvnvsect->index, cstring($pv), $len)); | |
440 | } | |
441 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); | |
442 | } | |
443 | ||
444 | sub B::BM::save { | |
445 | my ($sv) = @_; | |
446 | my $sym = objsym($sv); | |
447 | return $sym if defined $sym; | |
448 | my $pv = $sv->PV . "\0" . $sv->TABLE; | |
449 | my $len = length($pv); | |
450 | $xpvbmsect->add(sprintf("0, %u, %u, %d, %s, 0, 0, %d, %u, 0x%x", | |
451 | $len, $len + 258, $sv->IVX, $sv->NVX, | |
452 | $sv->USEFUL, $sv->PREVIOUS, $sv->RARE)); | |
453 | $svsect->add(sprintf("&xpvbm_list[%d], %lu, 0x%x", | |
454 | $xpvbmsect->index, $sv->REFCNT + 1, $sv->FLAGS)); | |
455 | $sv->save_magic; | |
456 | $init->add(sprintf("xpvbm_list[%d].xpv_pv = savepvn(%s, %u);", | |
457 | $xpvbmsect->index, cstring($pv), $len), | |
458 | sprintf("xpvbm_list[%d].xpv_cur = %u;", | |
459 | $xpvbmsect->index, $len - 257)); | |
460 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); | |
461 | } | |
462 | ||
463 | sub B::PV::save { | |
464 | my ($sv) = @_; | |
465 | my $sym = objsym($sv); | |
466 | return $sym if defined $sym; | |
467 | my $pv = $sv->PV; | |
468 | my $len = length($pv); | |
469 | my ($pvsym, $pvmax) = savepv($pv); | |
470 | $xpvsect->add(sprintf("%s, %u, %u", $pvsym, $len, $pvmax)); | |
471 | $svsect->add(sprintf("&xpv_list[%d], %lu, 0x%x", | |
472 | $xpvsect->index, $sv->REFCNT + 1, $sv->FLAGS)); | |
473 | if (!$pv_copy_on_grow) { | |
474 | $init->add(sprintf("xpv_list[%d].xpv_pv = savepvn(%s, %u);", | |
475 | $xpvsect->index, cstring($pv), $len)); | |
476 | } | |
477 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); | |
478 | } | |
479 | ||
480 | sub B::PVMG::save { | |
481 | my ($sv) = @_; | |
482 | my $sym = objsym($sv); | |
483 | return $sym if defined $sym; | |
484 | my $pv = $sv->PV; | |
485 | my $len = length($pv); | |
486 | my ($pvsym, $pvmax) = savepv($pv); | |
487 | $xpvmgsect->add(sprintf("%s, %u, %u, %d, %s, 0, 0", | |
488 | $pvsym, $len, $pvmax, $sv->IVX, $sv->NVX)); | |
489 | $svsect->add(sprintf("&xpvmg_list[%d], %lu, 0x%x", | |
490 | $xpvmgsect->index, $sv->REFCNT + 1, $sv->FLAGS)); | |
491 | if (!$pv_copy_on_grow) { | |
492 | $init->add(sprintf("xpvmg_list[%d].xpv_pv = savepvn(%s, %u);", | |
493 | $xpvmgsect->index, cstring($pv), $len)); | |
494 | } | |
495 | $sym = savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); | |
496 | $sv->save_magic; | |
497 | return $sym; | |
498 | } | |
499 | ||
500 | sub B::PVMG::save_magic { | |
501 | my ($sv) = @_; | |
502 | #warn sprintf("saving magic for %s (0x%x)\n", class($sv), $$sv); # debug | |
503 | my $stash = $sv->SvSTASH; | |
504 | if ($$stash) { | |
505 | warn sprintf("xmg_stash = %s (0x%x)\n", $stash->NAME, $$stash) | |
506 | if $debug_mg; | |
507 | # XXX Hope stash is already going to be saved. | |
508 | $init->add(sprintf("SvSTASH(s\\_%x) = s\\_%x;", $$sv, $$stash)); | |
509 | } | |
510 | my @mgchain = $sv->MAGIC; | |
511 | my ($mg, $type, $obj, $ptr); | |
512 | foreach $mg (@mgchain) { | |
513 | $type = $mg->TYPE; | |
514 | $obj = $mg->OBJ; | |
515 | $ptr = $mg->PTR; | |
516 | my $len = defined($ptr) ? length($ptr) : 0; | |
517 | if ($debug_mg) { | |
518 | warn sprintf("magic %s (0x%x), obj %s (0x%x), type %s, ptr %s\n", | |
519 | class($sv), $$sv, class($obj), $$obj, | |
520 | cchar($type), cstring($ptr)); | |
521 | } | |
522 | $init->add(sprintf("sv_magic((SV*)s\\_%x, (SV*)s\\_%x, %s, %s, %d);", | |
523 | $$sv, $$obj, cchar($type),cstring($ptr),$len)); | |
524 | } | |
525 | } | |
526 | ||
527 | sub B::RV::save { | |
528 | my ($sv) = @_; | |
529 | my $sym = objsym($sv); | |
530 | return $sym if defined $sym; | |
66a2622e NIS |
531 | my $rv = $sv->RV->save; |
532 | $rv =~ s/^\([AGHS]V\s*\*\)\s*(\&sv_list.*)$/$1/; | |
533 | $xrvsect->add($rv); | |
a798dbf2 MB |
534 | $svsect->add(sprintf("&xrv_list[%d], %lu, 0x%x", |
535 | $xrvsect->index, $sv->REFCNT + 1, $sv->FLAGS)); | |
536 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); | |
537 | } | |
538 | ||
539 | sub try_autoload { | |
540 | my ($cvstashname, $cvname) = @_; | |
541 | warn sprintf("No definition for sub %s::%s\n", $cvstashname, $cvname); | |
542 | # Handle AutoLoader classes explicitly. Any more general AUTOLOAD | |
543 | # use should be handled by the class itself. | |
544 | no strict 'refs'; | |
545 | my $isa = \@{"$cvstashname\::ISA"}; | |
546 | if (grep($_ eq "AutoLoader", @$isa)) { | |
547 | warn "Forcing immediate load of sub derived from AutoLoader\n"; | |
548 | # Tweaked version of AutoLoader::AUTOLOAD | |
549 | my $dir = $cvstashname; | |
550 | $dir =~ s(::)(/)g; | |
551 | eval { require "auto/$dir/$cvname.al" }; | |
552 | if ($@) { | |
553 | warn qq(failed require "auto/$dir/$cvname.al": $@\n); | |
554 | return 0; | |
555 | } else { | |
556 | return 1; | |
557 | } | |
558 | } | |
559 | } | |
560 | ||
561 | sub B::CV::save { | |
562 | my ($cv) = @_; | |
563 | my $sym = objsym($cv); | |
564 | if (defined($sym)) { | |
565 | # warn sprintf("CV 0x%x already saved as $sym\n", $$cv); # debug | |
566 | return $sym; | |
567 | } | |
568 | # Reserve a place in svsect and xpvcvsect and record indices | |
569 | my $sv_ix = $svsect->index + 1; | |
570 | $svsect->add("svix$sv_ix"); | |
571 | my $xpvcv_ix = $xpvcvsect->index + 1; | |
572 | $xpvcvsect->add("xpvcvix$xpvcv_ix"); | |
573 | # Save symbol now so that GvCV() doesn't recurse back to us via CvGV() | |
574 | $sym = savesym($cv, "&sv_list[$sv_ix]"); | |
575 | warn sprintf("saving CV 0x%x as $sym\n", $$cv) if $debug_cv; | |
576 | my $gv = $cv->GV; | |
577 | my $cvstashname = $gv->STASH->NAME; | |
578 | my $cvname = $gv->NAME; | |
579 | my $root = $cv->ROOT; | |
580 | my $cvxsub = $cv->XSUB; | |
581 | if (!$$root && !$cvxsub) { | |
582 | if (try_autoload($cvstashname, $cvname)) { | |
583 | # Recalculate root and xsub | |
584 | $root = $cv->ROOT; | |
585 | $cvxsub = $cv->XSUB; | |
586 | if ($$root || $cvxsub) { | |
587 | warn "Successful forced autoload\n"; | |
588 | } | |
589 | } | |
590 | } | |
591 | my $startfield = 0; | |
592 | my $padlist = $cv->PADLIST; | |
593 | my $pv = $cv->PV; | |
594 | my $xsub = 0; | |
595 | my $xsubany = "Nullany"; | |
596 | if ($$root) { | |
597 | warn sprintf("saving op tree for CV 0x%x, root = 0x%x\n", | |
598 | $$cv, $$root) if $debug_cv; | |
599 | my $ppname = ""; | |
600 | if ($$gv) { | |
601 | my $stashname = $gv->STASH->NAME; | |
602 | my $gvname = $gv->NAME; | |
603 | if ($gvname ne "__ANON__") { | |
604 | $ppname = (${$gv->FORM} == $$cv) ? "pp_form_" : "pp_sub_"; | |
605 | $ppname .= ($stashname eq "main") ? | |
606 | $gvname : "$stashname\::$gvname"; | |
607 | $ppname =~ s/::/__/g; | |
44887cfa NIS |
608 | if ($gvname eq "INIT"){ |
609 | $ppname .= "_$initsub_index"; | |
610 | $initsub_index++; | |
611 | } | |
a798dbf2 MB |
612 | } |
613 | } | |
614 | if (!$ppname) { | |
615 | $ppname = "pp_anonsub_$anonsub_index"; | |
616 | $anonsub_index++; | |
617 | } | |
618 | $startfield = saveoptree($ppname, $root, $cv->START, $padlist->ARRAY); | |
619 | warn sprintf("done saving op tree for CV 0x%x, name %s, root 0x%x\n", | |
620 | $$cv, $ppname, $$root) if $debug_cv; | |
621 | if ($$padlist) { | |
622 | warn sprintf("saving PADLIST 0x%x for CV 0x%x\n", | |
623 | $$padlist, $$cv) if $debug_cv; | |
624 | $padlist->save; | |
625 | warn sprintf("done saving PADLIST 0x%x for CV 0x%x\n", | |
626 | $$padlist, $$cv) if $debug_cv; | |
627 | } | |
628 | } | |
629 | elsif ($cvxsub) { | |
630 | $xsubany = sprintf("ANYINIT((void*)0x%x)", $cv->XSUBANY); | |
631 | # Try to find out canonical name of XSUB function from EGV. | |
632 | # XXX Doesn't work for XSUBs with PREFIX set (or anyone who | |
633 | # calls newXS() manually with weird arguments). | |
634 | my $egv = $gv->EGV; | |
635 | my $stashname = $egv->STASH->NAME; | |
636 | $stashname =~ s/::/__/g; | |
637 | $xsub = sprintf("XS_%s_%s", $stashname, $egv->NAME); | |
638 | $decl->add("void $xsub _((CV*));"); | |
639 | } | |
640 | else { | |
641 | warn sprintf("No definition for sub %s::%s (unable to autoload)\n", | |
642 | $cvstashname, $cvname); # debug | |
66a2622e NIS |
643 | } |
644 | $pv = '' unless defined $pv; # Avoid use of undef warnings | |
5cfd8ad4 | 645 | $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, 0x%x", |
a798dbf2 MB |
646 | $xpvcv_ix, cstring($pv), length($pv), $cv->IVX, |
647 | $cv->NVX, $startfield, ${$cv->ROOT}, $cv->DEPTH, | |
5cfd8ad4 VB |
648 | $$padlist, ${$cv->OUTSIDE}, $cv->CvFLAGS)); |
649 | ||
650 | if (${$cv->OUTSIDE} == ${main_cv()}){ | |
651 | $init->add(sprintf("CvOUTSIDE(s\\_%x)=PL_main_cv;",$$cv)); | |
652 | } | |
653 | ||
a798dbf2 MB |
654 | if ($$gv) { |
655 | $gv->save; | |
656 | $init->add(sprintf("CvGV(s\\_%x) = s\\_%x;",$$cv,$$gv)); | |
657 | warn sprintf("done saving GV 0x%x for CV 0x%x\n", | |
658 | $$gv, $$cv) if $debug_cv; | |
659 | } | |
660 | my $filegv = $cv->FILEGV; | |
661 | if ($$filegv) { | |
662 | $filegv->save; | |
663 | $init->add(sprintf("CvFILEGV(s\\_%x) = s\\_%x;", $$cv, $$filegv)); | |
664 | warn sprintf("done saving FILEGV 0x%x for CV 0x%x\n", | |
665 | $$filegv, $$cv) if $debug_cv; | |
666 | } | |
667 | my $stash = $cv->STASH; | |
668 | if ($$stash) { | |
669 | $stash->save; | |
670 | $init->add(sprintf("CvSTASH(s\\_%x) = s\\_%x;", $$cv, $$stash)); | |
671 | warn sprintf("done saving STASH 0x%x for CV 0x%x\n", | |
672 | $$stash, $$cv) if $debug_cv; | |
673 | } | |
674 | $symsect->add(sprintf("svix%d\t(XPVCV*)&xpvcv_list[%u], %lu, 0x%x", | |
675 | $sv_ix, $xpvcv_ix, $cv->REFCNT + 1, $cv->FLAGS)); | |
676 | return $sym; | |
677 | } | |
678 | ||
679 | sub B::GV::save { | |
680 | my ($gv) = @_; | |
681 | my $sym = objsym($gv); | |
682 | if (defined($sym)) { | |
683 | #warn sprintf("GV 0x%x already saved as $sym\n", $$gv); # debug | |
684 | return $sym; | |
685 | } else { | |
686 | my $ix = $gv_index++; | |
687 | $sym = savesym($gv, "gv_list[$ix]"); | |
688 | #warn sprintf("Saving GV 0x%x as $sym\n", $$gv); # debug | |
689 | } | |
690 | my $gvname = $gv->NAME; | |
691 | my $name = cstring($gv->STASH->NAME . "::" . $gvname); | |
692 | #warn "GV name is $name\n"; # debug | |
693 | my $egv = $gv->EGV; | |
694 | my $egvsym; | |
695 | if ($$gv != $$egv) { | |
696 | #warn(sprintf("EGV name is %s, saving it now\n", | |
697 | # $egv->STASH->NAME . "::" . $egv->NAME)); # debug | |
698 | $egvsym = $egv->save; | |
699 | } | |
700 | $init->add(qq[$sym = gv_fetchpv($name, TRUE, SVt_PV);], | |
701 | sprintf("SvFLAGS($sym) = 0x%x;", $gv->FLAGS), | |
702 | sprintf("GvFLAGS($sym) = 0x%x;", $gv->GvFLAGS), | |
703 | sprintf("GvLINE($sym) = %u;", $gv->LINE)); | |
704 | # Shouldn't need to do save_magic since gv_fetchpv handles that | |
705 | #$gv->save_magic; | |
706 | my $refcnt = $gv->REFCNT + 1; | |
707 | $init->add(sprintf("SvREFCNT($sym) += %u;", $refcnt - 1)) if $refcnt > 1; | |
708 | my $gvrefcnt = $gv->GvREFCNT; | |
709 | if ($gvrefcnt > 1) { | |
710 | $init->add(sprintf("GvREFCNT($sym) += %u;", $gvrefcnt - 1)); | |
711 | } | |
712 | if (defined($egvsym)) { | |
713 | # Shared glob *foo = *bar | |
714 | $init->add("gp_free($sym);", | |
715 | "GvGP($sym) = GvGP($egvsym);"); | |
716 | } elsif ($gvname !~ /^([^A-Za-z]|STDIN|STDOUT|STDERR|ARGV|SIG|ENV)$/) { | |
717 | # Don't save subfields of special GVs (*_, *1, *# and so on) | |
718 | # warn "GV::save saving subfields\n"; # debug | |
719 | my $gvsv = $gv->SV; | |
720 | if ($$gvsv) { | |
721 | $init->add(sprintf("GvSV($sym) = s\\_%x;", $$gvsv)); | |
722 | # warn "GV::save \$$name\n"; # debug | |
723 | $gvsv->save; | |
724 | } | |
725 | my $gvav = $gv->AV; | |
726 | if ($$gvav) { | |
727 | $init->add(sprintf("GvAV($sym) = s\\_%x;", $$gvav)); | |
728 | # warn "GV::save \@$name\n"; # debug | |
729 | $gvav->save; | |
730 | } | |
731 | my $gvhv = $gv->HV; | |
732 | if ($$gvhv) { | |
733 | $init->add(sprintf("GvHV($sym) = s\\_%x;", $$gvhv)); | |
734 | # warn "GV::save \%$name\n"; # debug | |
735 | $gvhv->save; | |
736 | } | |
737 | my $gvcv = $gv->CV; | |
738 | if ($$gvcv) { | |
739 | $init->add(sprintf("GvCV($sym) = (CV*)s\\_%x;", $$gvcv)); | |
740 | # warn "GV::save &$name\n"; # debug | |
741 | $gvcv->save; | |
742 | } | |
743 | my $gvfilegv = $gv->FILEGV; | |
744 | if ($$gvfilegv) { | |
5ed82aed | 745 | $init->add(sprintf("GvFILEGV($sym) = (GV*)s\\_%x;",$$gvfilegv)); |
a798dbf2 MB |
746 | # warn "GV::save GvFILEGV(*$name)\n"; # debug |
747 | $gvfilegv->save; | |
748 | } | |
749 | my $gvform = $gv->FORM; | |
750 | if ($$gvform) { | |
751 | $init->add(sprintf("GvFORM($sym) = (CV*)s\\_%x;", $$gvform)); | |
752 | # warn "GV::save GvFORM(*$name)\n"; # debug | |
753 | $gvform->save; | |
754 | } | |
755 | my $gvio = $gv->IO; | |
756 | if ($$gvio) { | |
757 | $init->add(sprintf("GvIOp($sym) = s\\_%x;", $$gvio)); | |
758 | # warn "GV::save GvIO(*$name)\n"; # debug | |
759 | $gvio->save; | |
760 | } | |
761 | } | |
762 | return $sym; | |
763 | } | |
764 | sub B::AV::save { | |
765 | my ($av) = @_; | |
766 | my $sym = objsym($av); | |
767 | return $sym if defined $sym; | |
768 | my $avflags = $av->AvFLAGS; | |
769 | $xpvavsect->add(sprintf("0, -1, -1, 0, 0.0, 0, Nullhv, 0, 0, 0x%x", | |
770 | $avflags)); | |
771 | $svsect->add(sprintf("&xpvav_list[%d], %lu, 0x%x", | |
772 | $xpvavsect->index, $av->REFCNT + 1, $av->FLAGS)); | |
773 | my $sv_list_index = $svsect->index; | |
774 | my $fill = $av->FILL; | |
775 | $av->save_magic; | |
776 | warn sprintf("saving AV 0x%x FILL=$fill AvFLAGS=0x%x", $$av, $avflags) | |
777 | if $debug_av; | |
778 | # XXX AVf_REAL is wrong test: need to save comppadlist but not stack | |
779 | #if ($fill > -1 && ($avflags & AVf_REAL)) { | |
780 | if ($fill > -1) { | |
781 | my @array = $av->ARRAY; | |
782 | if ($debug_av) { | |
783 | my $el; | |
784 | my $i = 0; | |
785 | foreach $el (@array) { | |
786 | warn sprintf("AV 0x%x[%d] = %s 0x%x\n", | |
787 | $$av, $i++, class($el), $$el); | |
788 | } | |
789 | } | |
790 | my @names = map($_->save, @array); | |
791 | # XXX Better ways to write loop? | |
792 | # Perhaps svp[0] = ...; svp[1] = ...; svp[2] = ...; | |
793 | # Perhaps I32 i = 0; svp[i++] = ...; svp[i++] = ...; svp[i++] = ...; | |
794 | $init->add("{", | |
795 | "\tSV **svp;", | |
796 | "\tAV *av = (AV*)&sv_list[$sv_list_index];", | |
797 | "\tav_extend(av, $fill);", | |
798 | "\tsvp = AvARRAY(av);", | |
799 | map("\t*svp++ = (SV*)$_;", @names), | |
800 | "\tAvFILLp(av) = $fill;", | |
801 | "}"); | |
802 | } else { | |
803 | my $max = $av->MAX; | |
804 | $init->add("av_extend((AV*)&sv_list[$sv_list_index], $max);") | |
805 | if $max > -1; | |
806 | } | |
807 | return savesym($av, "(AV*)&sv_list[$sv_list_index]"); | |
808 | } | |
809 | ||
810 | sub B::HV::save { | |
811 | my ($hv) = @_; | |
812 | my $sym = objsym($hv); | |
813 | return $sym if defined $sym; | |
814 | my $name = $hv->NAME; | |
815 | if ($name) { | |
816 | # It's a stash | |
817 | ||
818 | # A perl bug means HvPMROOT isn't altered when a PMOP is freed. Usually | |
819 | # the only symptom is that sv_reset tries to reset the PMf_USED flag of | |
820 | # a trashed op but we look at the trashed op_type and segfault. | |
821 | #my $adpmroot = ${$hv->PMROOT}; | |
822 | my $adpmroot = 0; | |
823 | $decl->add("static HV *hv$hv_index;"); | |
824 | # XXX Beware of weird package names containing double-quotes, \n, ...? | |
825 | $init->add(qq[hv$hv_index = gv_stashpv("$name", TRUE);]); | |
826 | if ($adpmroot) { | |
827 | $init->add(sprintf("HvPMROOT(hv$hv_index) = (PMOP*)s\\_%x;", | |
828 | $adpmroot)); | |
829 | } | |
830 | $sym = savesym($hv, "hv$hv_index"); | |
831 | $hv_index++; | |
832 | return $sym; | |
833 | } | |
834 | # It's just an ordinary HV | |
835 | $xpvhvsect->add(sprintf("0, 0, %d, 0, 0.0, 0, Nullhv, %d, 0, 0, 0", | |
836 | $hv->MAX, $hv->RITER)); | |
837 | $svsect->add(sprintf("&xpvhv_list[%d], %lu, 0x%x", | |
838 | $xpvhvsect->index, $hv->REFCNT + 1, $hv->FLAGS)); | |
839 | my $sv_list_index = $svsect->index; | |
840 | my @contents = $hv->ARRAY; | |
841 | if (@contents) { | |
842 | my $i; | |
843 | for ($i = 1; $i < @contents; $i += 2) { | |
844 | $contents[$i] = $contents[$i]->save; | |
845 | } | |
846 | $init->add("{", "\tHV *hv = (HV*)&sv_list[$sv_list_index];"); | |
847 | while (@contents) { | |
848 | my ($key, $value) = splice(@contents, 0, 2); | |
849 | $init->add(sprintf("\thv_store(hv, %s, %u, %s, %s);", | |
850 | cstring($key),length($key),$value, hash($key))); | |
851 | } | |
852 | $init->add("}"); | |
853 | } | |
854 | return savesym($hv, "(HV*)&sv_list[$sv_list_index]"); | |
855 | } | |
856 | ||
857 | sub B::IO::save { | |
858 | my ($io) = @_; | |
859 | my $sym = objsym($io); | |
860 | return $sym if defined $sym; | |
861 | my $pv = $io->PV; | |
66a2622e | 862 | $pv = '' unless defined $pv; |
a798dbf2 MB |
863 | my $len = length($pv); |
864 | $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", | |
865 | $len, $len+1, $io->IVX, $io->NVX, $io->LINES, | |
866 | $io->PAGE, $io->PAGE_LEN, $io->LINES_LEFT, | |
867 | cstring($io->TOP_NAME), cstring($io->FMT_NAME), | |
868 | cstring($io->BOTTOM_NAME), $io->SUBPROCESS, | |
869 | cchar($io->IoTYPE), $io->IoFLAGS)); | |
870 | $svsect->add(sprintf("&xpvio_list[%d], %lu, 0x%x", | |
871 | $xpviosect->index, $io->REFCNT + 1, $io->FLAGS)); | |
872 | $sym = savesym($io, sprintf("(IO*)&sv_list[%d]", $svsect->index)); | |
873 | my ($field, $fsym); | |
874 | foreach $field (qw(TOP_GV FMT_GV BOTTOM_GV)) { | |
875 | $fsym = $io->$field(); | |
876 | if ($$fsym) { | |
877 | $init->add(sprintf("Io$field($sym) = (GV*)s\\_%x;", $$fsym)); | |
878 | $fsym->save; | |
879 | } | |
880 | } | |
881 | $io->save_magic; | |
882 | return $sym; | |
883 | } | |
884 | ||
885 | sub B::SV::save { | |
886 | my $sv = shift; | |
887 | # This is where we catch an honest-to-goodness Nullsv (which gets | |
888 | # blessed into B::SV explicitly) and any stray erroneous SVs. | |
889 | return 0 unless $$sv; | |
890 | confess sprintf("cannot save that type of SV: %s (0x%x)\n", | |
891 | class($sv), $$sv); | |
892 | } | |
893 | ||
894 | sub output_all { | |
895 | my $init_name = shift; | |
896 | my $section; | |
897 | my @sections = ($opsect, $unopsect, $binopsect, $logopsect, $condopsect, | |
898 | $listopsect, $pmopsect, $svopsect, $gvopsect, $pvopsect, | |
66a2622e | 899 | $loopsect, $copsect, $svsect, $xpvsect, |
a798dbf2 MB |
900 | $xpvavsect, $xpvhvsect, $xpvcvsect, $xpvivsect, $xpvnvsect, |
901 | $xpvmgsect, $xpvlvsect, $xrvsect, $xpvbmsect, $xpviosect); | |
31d7d75a | 902 | $bootstrap->output(\*STDOUT, "/* bootstrap %s */\n"); |
a798dbf2 MB |
903 | $symsect->output(\*STDOUT, "#define %s\n"); |
904 | print "\n"; | |
905 | output_declarations(); | |
906 | foreach $section (@sections) { | |
907 | my $lines = $section->index + 1; | |
908 | if ($lines) { | |
909 | my $name = $section->name; | |
910 | my $typename = ($name eq "xpvcv") ? "XPVCV_or_similar" : uc($name); | |
911 | print "Static $typename ${name}_list[$lines];\n"; | |
912 | } | |
913 | } | |
914 | $decl->output(\*STDOUT, "%s\n"); | |
915 | print "\n"; | |
916 | foreach $section (@sections) { | |
917 | my $lines = $section->index + 1; | |
918 | if ($lines) { | |
919 | my $name = $section->name; | |
920 | my $typename = ($name eq "xpvcv") ? "XPVCV_or_similar" : uc($name); | |
921 | printf "static %s %s_list[%u] = {\n", $typename, $name, $lines; | |
922 | $section->output(\*STDOUT, "\t{ %s },\n"); | |
923 | print "};\n\n"; | |
924 | } | |
925 | } | |
926 | ||
927 | print <<"EOT"; | |
928 | static int $init_name() | |
929 | { | |
930 | dTHR; | |
931 | EOT | |
932 | $init->output(\*STDOUT, "\t%s\n"); | |
933 | print "\treturn 0;\n}\n"; | |
934 | if ($verbose) { | |
935 | warn compile_stats(); | |
936 | warn "NULLOP count: $nullop_count\n"; | |
937 | } | |
938 | } | |
939 | ||
940 | sub output_declarations { | |
941 | print <<'EOT'; | |
942 | #ifdef BROKEN_STATIC_REDECL | |
943 | #define Static extern | |
944 | #else | |
945 | #define Static static | |
946 | #endif /* BROKEN_STATIC_REDECL */ | |
947 | ||
948 | #ifdef BROKEN_UNION_INIT | |
949 | /* | |
950 | * Cribbed from cv.h with ANY (a union) replaced by void*. | |
951 | * Some pre-Standard compilers can't cope with initialising unions. Ho hum. | |
952 | */ | |
953 | typedef struct { | |
954 | char * xpv_pv; /* pointer to malloced string */ | |
955 | STRLEN xpv_cur; /* length of xp_pv as a C string */ | |
956 | STRLEN xpv_len; /* allocated size */ | |
957 | IV xof_off; /* integer value */ | |
958 | double xnv_nv; /* numeric value, if any */ | |
959 | MAGIC* xmg_magic; /* magic for scalar array */ | |
960 | HV* xmg_stash; /* class package */ | |
961 | ||
962 | HV * xcv_stash; | |
963 | OP * xcv_start; | |
964 | OP * xcv_root; | |
965 | void (*xcv_xsub) _((CV*)); | |
966 | void * xcv_xsubany; | |
967 | GV * xcv_gv; | |
968 | GV * xcv_filegv; | |
969 | long xcv_depth; /* >= 2 indicates recursive call */ | |
970 | AV * xcv_padlist; | |
971 | CV * xcv_outside; | |
972 | #ifdef USE_THREADS | |
973 | perl_mutex *xcv_mutexp; | |
974 | struct perl_thread *xcv_owner; /* current owner thread */ | |
975 | #endif /* USE_THREADS */ | |
976 | U8 xcv_flags; | |
977 | } XPVCV_or_similar; | |
978 | #define ANYINIT(i) i | |
979 | #else | |
980 | #define XPVCV_or_similar XPVCV | |
981 | #define ANYINIT(i) {i} | |
982 | #endif /* BROKEN_UNION_INIT */ | |
983 | #define Nullany ANYINIT(0) | |
984 | ||
985 | #define UNUSED 0 | |
986 | #define sym_0 0 | |
987 | ||
988 | EOT | |
989 | print "static GV *gv_list[$gv_index];\n" if $gv_index; | |
990 | print "\n"; | |
991 | } | |
992 | ||
993 | ||
994 | sub output_boilerplate { | |
995 | print <<'EOT'; | |
996 | #include "EXTERN.h" | |
997 | #include "perl.h" | |
998 | #ifndef PATCHLEVEL | |
999 | #include "patchlevel.h" | |
1000 | #endif | |
1001 | ||
1002 | /* Workaround for mapstart: the only op which needs a different ppaddr */ | |
1003 | #undef pp_mapstart | |
1004 | #define pp_mapstart pp_grepstart | |
1005 | ||
1006 | static void xs_init _((void)); | |
1007 | static PerlInterpreter *my_perl; | |
1008 | EOT | |
1009 | } | |
1010 | ||
1011 | sub output_main { | |
1012 | print <<'EOT'; | |
1013 | int | |
1014 | #ifndef CAN_PROTOTYPE | |
1015 | main(argc, argv, env) | |
1016 | int argc; | |
1017 | char **argv; | |
1018 | char **env; | |
1019 | #else /* def(CAN_PROTOTYPE) */ | |
1020 | main(int argc, char **argv, char **env) | |
1021 | #endif /* def(CAN_PROTOTYPE) */ | |
1022 | { | |
1023 | int exitstatus; | |
1024 | int i; | |
1025 | char **fakeargv; | |
1026 | ||
1027 | PERL_SYS_INIT(&argc,&argv); | |
1028 | ||
1029 | perl_init_i18nl10n(1); | |
1030 | ||
81009501 | 1031 | if (!PL_do_undump) { |
a798dbf2 MB |
1032 | my_perl = perl_alloc(); |
1033 | if (!my_perl) | |
1034 | exit(1); | |
1035 | perl_construct( my_perl ); | |
1036 | } | |
1037 | ||
1038 | #ifdef CSH | |
81009501 GS |
1039 | if (!PL_cshlen) |
1040 | PL_cshlen = strlen(PL_cshname); | |
a798dbf2 MB |
1041 | #endif |
1042 | ||
1043 | #ifdef ALLOW_PERL_OPTIONS | |
1044 | #define EXTRA_OPTIONS 2 | |
1045 | #else | |
1046 | #define EXTRA_OPTIONS 3 | |
1047 | #endif /* ALLOW_PERL_OPTIONS */ | |
1048 | New(666, fakeargv, argc + EXTRA_OPTIONS + 1, char *); | |
1049 | fakeargv[0] = argv[0]; | |
1050 | fakeargv[1] = "-e"; | |
1051 | fakeargv[2] = ""; | |
1052 | #ifndef ALLOW_PERL_OPTIONS | |
1053 | fakeargv[3] = "--"; | |
1054 | #endif /* ALLOW_PERL_OPTIONS */ | |
1055 | for (i = 1; i < argc; i++) | |
1056 | fakeargv[i + EXTRA_OPTIONS] = argv[i]; | |
1057 | fakeargv[argc + EXTRA_OPTIONS] = 0; | |
1058 | ||
1059 | exitstatus = perl_parse(my_perl, xs_init, argc + EXTRA_OPTIONS, | |
1060 | fakeargv, NULL); | |
1061 | if (exitstatus) | |
1062 | exit( exitstatus ); | |
1063 | ||
1064 | sv_setpv(GvSV(gv_fetchpv("0", TRUE, SVt_PV)), argv[0]); | |
81009501 GS |
1065 | PL_main_cv = PL_compcv; |
1066 | PL_compcv = 0; | |
a798dbf2 MB |
1067 | |
1068 | exitstatus = perl_init(); | |
1069 | if (exitstatus) | |
1070 | exit( exitstatus ); | |
1071 | ||
1072 | exitstatus = perl_run( my_perl ); | |
1073 | ||
1074 | perl_destruct( my_perl ); | |
1075 | perl_free( my_perl ); | |
1076 | ||
1077 | exit( exitstatus ); | |
1078 | } | |
1079 | ||
1080 | static void | |
1081 | xs_init() | |
1082 | { | |
1083 | } | |
1084 | EOT | |
1085 | } | |
1086 | ||
1087 | sub dump_symtable { | |
1088 | # For debugging | |
1089 | my ($sym, $val); | |
1090 | warn "----Symbol table:\n"; | |
1091 | while (($sym, $val) = each %symtable) { | |
1092 | warn "$sym => $val\n"; | |
1093 | } | |
1094 | warn "---End of symbol table\n"; | |
1095 | } | |
1096 | ||
1097 | sub save_object { | |
1098 | my $sv; | |
1099 | foreach $sv (@_) { | |
1100 | svref_2object($sv)->save; | |
1101 | } | |
338a6d08 NIS |
1102 | } |
1103 | ||
1104 | sub Dummy_BootStrap { } | |
a798dbf2 | 1105 | |
66a2622e NIS |
1106 | sub B::GV::savecv |
1107 | { | |
1108 | my $gv = shift; | |
1109 | my $package=$gv->STASH->NAME; | |
1110 | my $name = $gv->NAME; | |
1111 | my $cv = $gv->CV; | |
1112 | return unless ($$cv || $name eq 'ISA'); | |
1113 | # We may be looking at this package just because it is a branch in the | |
1114 | # symbol table which is on the path to a package which we need to save | |
1115 | # e.g. this is 'Getopt' and wee need to save 'Getopt::Long' | |
1116 | # | |
1117 | if ($$cv && $name eq "bootstrap" && $cv->XSUB) | |
1118 | { | |
1119 | my $file = $cv->FILEGV->SV->PV; | |
1120 | $bootstrap->add($file); | |
1121 | } | |
1122 | unless ($unused_sub_packages{$package}) | |
1123 | { | |
1124 | warn sprintf("omitting cv $name in %s\n", $package) if $$cv; # if $debug_cv; | |
1125 | return ; | |
1126 | } | |
1127 | if ($$cv) | |
1128 | { | |
1129 | if ($name eq "bootstrap" && $cv->XSUB) | |
1130 | { | |
1131 | my $name = $gv->STASH->NAME.'::'.$name; | |
1132 | no strict 'refs'; | |
1133 | *{$name} = \&Dummy_BootStrap; | |
1134 | $cv = $gv->CV; | |
a798dbf2 | 1135 | } |
66a2622e NIS |
1136 | warn sprintf("saving extra CV &%s::%s (0x%x) from GV 0x%x\n", |
1137 | $package, $name, $$cv, $$gv) if ($debug_cv); | |
1138 | $gv->save; | |
1139 | } | |
1140 | elsif ($name eq 'ISA') | |
1141 | { | |
1142 | $gv->save; | |
1143 | } | |
1144 | } | |
5ed82aed | 1145 | |
66a2622e NIS |
1146 | sub mark_package |
1147 | { | |
1148 | my $package = shift; | |
1149 | unless ($unused_sub_packages{$package}) | |
1150 | { | |
1151 | no strict 'refs'; | |
1152 | $unused_sub_packages{$package} = 1; | |
1153 | if (defined(@{$package.'::ISA'})) | |
1154 | { | |
1155 | foreach my $isa (@{$package.'::ISA'}) | |
1156 | { | |
1157 | if ($isa eq 'DynaLoader') | |
1158 | { | |
1159 | unless (defined(&{$package.'::bootstrap'})) | |
1160 | { | |
1161 | warn "Forcing bootstrap of $package\n"; | |
1162 | eval { $package->bootstrap }; | |
1163 | } | |
1164 | } | |
1165 | else | |
1166 | { | |
1167 | unless ($unused_sub_packages{$isa}) | |
1168 | { | |
1169 | warn "$isa saved (it is in $package\'s \@ISA)\n"; | |
1170 | mark_package($isa); | |
1171 | } | |
1172 | } | |
1173 | } | |
1174 | } | |
1175 | } | |
1176 | return 1; | |
1177 | } | |
1178 | ||
1179 | sub should_save | |
1180 | { | |
1181 | no strict qw(vars refs); | |
1182 | my $package = shift; | |
1183 | $package =~ s/::$//; | |
1184 | return $unused_sub_packages{$package} = 0 if ($package =~ /::::/); # skip ::::ISA::CACHE etc. | |
1185 | warn "Considering $package\n";#debug | |
1186 | foreach my $u (grep($unused_sub_packages{$_},keys %unused_sub_packages)) | |
1187 | { | |
1188 | # If this package is a prefix to something we are saving, traverse it | |
1189 | # but do not mark it for saving if it is not already | |
1190 | # e.g. to get to Getopt::Long we need to traverse Getopt but need | |
1191 | # not save Getopt | |
1192 | return 1 if ($u =~ /^$package\:\:/); | |
1193 | } | |
1194 | if (exists $unused_sub_packages{$package}) | |
1195 | { | |
1196 | warn "Cached $package is ".$unused_sub_packages{$package}."\n"; | |
1197 | return $unused_sub_packages{$package} | |
1198 | } | |
1199 | # Omit the packages which we use (and which cause grief | |
1200 | # because of fancy "goto &$AUTOLOAD" stuff). | |
1201 | # XXX Surely there must be a nicer way to do this. | |
1202 | if ($package eq "FileHandle" || $package eq "Config" || | |
1203 | $package eq "SelectSaver" || $package =~/^B::/) | |
1204 | { | |
1205 | return $unused_sub_packages{$package} = 0; | |
1206 | } | |
1207 | # Now see if current package looks like an OO class this is probably too strong. | |
1208 | foreach my $m (qw(new DESTROY TIESCALAR TIEARRAY TIEHASH TIEHANDLE)) | |
1209 | { | |
1210 | if ($package->can($m)) | |
1211 | { | |
1212 | warn "$package has method $m: saving package\n";#debug | |
1213 | return mark_package($package); | |
1214 | } | |
1215 | } | |
1216 | return $unused_sub_packages{$package} = 0; | |
a798dbf2 MB |
1217 | } |
1218 | ||
66a2622e NIS |
1219 | sub walkpackages |
1220 | { | |
1221 | my ($symref, $recurse, $prefix) = @_; | |
1222 | my $sym; | |
1223 | my $ref; | |
1224 | no strict 'vars'; | |
1225 | local(*glob); | |
1226 | $prefix = '' unless defined $prefix; | |
1227 | while (($sym, $ref) = each %$symref) | |
1228 | { | |
1229 | *glob = $ref; | |
1230 | if ($sym =~ /::$/) | |
1231 | { | |
1232 | $sym = $prefix . $sym; | |
1233 | if ($sym ne "main::" && &$recurse($sym)) | |
1234 | { | |
1235 | walkpackages(\%glob, $recurse, $sym); | |
1236 | } | |
1237 | } | |
1238 | } | |
1239 | } | |
338a6d08 NIS |
1240 | |
1241 | ||
66a2622e NIS |
1242 | sub save_unused_subs |
1243 | { | |
1244 | no strict qw(refs); | |
1245 | warn "Prescan\n"; | |
1246 | walkpackages(\%{"main::"}, sub { should_save($_[0]); return 1 }); | |
1247 | warn "Saving methods\n"; | |
1248 | walksymtable(\%{"main::"}, "savecv", \&should_save); | |
a798dbf2 MB |
1249 | } |
1250 | ||
1251 | sub save_main { | |
66a2622e NIS |
1252 | warn "Starting compile\n"; |
1253 | foreach my $pack (keys %unused_sub_packages) | |
1254 | { | |
1255 | mark_package($pack); | |
1256 | } | |
5cfd8ad4 | 1257 | my $curpad_nam = (comppadlist->ARRAY)[0]->save; |
a798dbf2 | 1258 | my $curpad_sym = (comppadlist->ARRAY)[1]->save; |
31d7d75a | 1259 | my $init_av = init_av->save; |
338a6d08 NIS |
1260 | my $inc_hv = svref_2object(\%INC)->save; |
1261 | my $inc_av = svref_2object(\@INC)->save; | |
66a2622e | 1262 | warn "Walking tree\n"; |
a798dbf2 MB |
1263 | walkoptree(main_root, "save"); |
1264 | warn "done main optree, walking symtable for extras\n" if $debug_cv; | |
66a2622e | 1265 | save_unused_subs(); |
a798dbf2 | 1266 | |
81009501 GS |
1267 | $init->add(sprintf("PL_main_root = s\\_%x;", ${main_root()}), |
1268 | sprintf("PL_main_start = s\\_%x;", ${main_start()}), | |
5cfd8ad4 | 1269 | "PL_curpad = AvARRAY($curpad_sym);", |
31d7d75a | 1270 | "PL_initav = $init_av;", |
338a6d08 NIS |
1271 | "GvHV(PL_incgv) = $inc_hv;", |
1272 | "GvAV(PL_incgv) = $inc_av;", | |
5cfd8ad4 VB |
1273 | "av_store(CvPADLIST(PL_main_cv),0,SvREFCNT_inc($curpad_nam));", |
1274 | "av_store(CvPADLIST(PL_main_cv),1,SvREFCNT_inc($curpad_sym));"); | |
5ed82aed | 1275 | warn "Writing output\n"; |
a798dbf2 MB |
1276 | output_boilerplate(); |
1277 | print "\n"; | |
1278 | output_all("perl_init"); | |
1279 | print "\n"; | |
1280 | output_main(); | |
1281 | } | |
1282 | ||
1283 | sub init_sections { | |
1284 | my @sections = (init => \$init, decl => \$decl, sym => \$symsect, | |
1285 | binop => \$binopsect, condop => \$condopsect, | |
66a2622e | 1286 | cop => \$copsect, gvop => \$gvopsect, |
a798dbf2 MB |
1287 | listop => \$listopsect, logop => \$logopsect, |
1288 | loop => \$loopsect, op => \$opsect, pmop => \$pmopsect, | |
1289 | pvop => \$pvopsect, svop => \$svopsect, unop => \$unopsect, | |
1290 | sv => \$svsect, xpv => \$xpvsect, xpvav => \$xpvavsect, | |
1291 | xpvhv => \$xpvhvsect, xpvcv => \$xpvcvsect, | |
1292 | xpviv => \$xpvivsect, xpvnv => \$xpvnvsect, | |
1293 | xpvmg => \$xpvmgsect, xpvlv => \$xpvlvsect, | |
1294 | xrv => \$xrvsect, xpvbm => \$xpvbmsect, | |
31d7d75a | 1295 | xpvio => \$xpviosect, bootstrap => \$bootstrap); |
a798dbf2 MB |
1296 | my ($name, $sectref); |
1297 | while (($name, $sectref) = splice(@sections, 0, 2)) { | |
66a2622e | 1298 | $$sectref = new B::C::Section $name, \%symtable, 0; |
a798dbf2 MB |
1299 | } |
1300 | } | |
1301 | ||
1302 | sub compile { | |
1303 | my @options = @_; | |
1304 | my ($option, $opt, $arg); | |
1305 | OPTION: | |
1306 | while ($option = shift @options) { | |
1307 | if ($option =~ /^-(.)(.*)/) { | |
1308 | $opt = $1; | |
1309 | $arg = $2; | |
1310 | } else { | |
1311 | unshift @options, $option; | |
1312 | last OPTION; | |
1313 | } | |
1314 | if ($opt eq "-" && $arg eq "-") { | |
1315 | shift @options; | |
1316 | last OPTION; | |
1317 | } | |
1318 | if ($opt eq "w") { | |
1319 | $warn_undefined_syms = 1; | |
1320 | } elsif ($opt eq "D") { | |
1321 | $arg ||= shift @options; | |
1322 | foreach $arg (split(//, $arg)) { | |
1323 | if ($arg eq "o") { | |
1324 | B->debug(1); | |
1325 | } elsif ($arg eq "c") { | |
1326 | $debug_cops = 1; | |
1327 | } elsif ($arg eq "A") { | |
1328 | $debug_av = 1; | |
1329 | } elsif ($arg eq "C") { | |
1330 | $debug_cv = 1; | |
1331 | } elsif ($arg eq "M") { | |
1332 | $debug_mg = 1; | |
1333 | } else { | |
1334 | warn "ignoring unknown debug option: $arg\n"; | |
1335 | } | |
1336 | } | |
1337 | } elsif ($opt eq "o") { | |
1338 | $arg ||= shift @options; | |
1339 | open(STDOUT, ">$arg") or return "$arg: $!\n"; | |
1340 | } elsif ($opt eq "v") { | |
1341 | $verbose = 1; | |
1342 | } elsif ($opt eq "u") { | |
1343 | $arg ||= shift @options; | |
66a2622e | 1344 | $unused_sub_packages{$arg} = undef; |
a798dbf2 MB |
1345 | } elsif ($opt eq "f") { |
1346 | $arg ||= shift @options; | |
1347 | if ($arg eq "cog") { | |
1348 | $pv_copy_on_grow = 1; | |
1349 | } elsif ($arg eq "no-cog") { | |
1350 | $pv_copy_on_grow = 0; | |
1351 | } | |
1352 | } elsif ($opt eq "O") { | |
1353 | $arg = 1 if $arg eq ""; | |
1354 | $pv_copy_on_grow = 0; | |
1355 | if ($arg >= 1) { | |
1356 | # Optimisations for -O1 | |
1357 | $pv_copy_on_grow = 1; | |
1358 | } | |
1359 | } | |
1360 | } | |
1361 | init_sections(); | |
1362 | if (@options) { | |
1363 | return sub { | |
1364 | my $objname; | |
1365 | foreach $objname (@options) { | |
1366 | eval "save_object(\\$objname)"; | |
1367 | } | |
1368 | output_all(); | |
1369 | } | |
1370 | } else { | |
1371 | return sub { save_main() }; | |
1372 | } | |
1373 | } | |
1374 | ||
1375 | 1; | |
7f20e9dd GS |
1376 | |
1377 | __END__ | |
1378 | ||
1379 | =head1 NAME | |
1380 | ||
1381 | B::C - Perl compiler's C backend | |
1382 | ||
1383 | =head1 SYNOPSIS | |
1384 | ||
1385 | perl -MO=C[,OPTIONS] foo.pl | |
1386 | ||
1387 | =head1 DESCRIPTION | |
1388 | ||
1a52ab62 MB |
1389 | This compiler backend takes Perl source and generates C source code |
1390 | corresponding to the internal structures that perl uses to run | |
1391 | your program. When the generated C source is compiled and run, it | |
1392 | cuts out the time which perl would have taken to load and parse | |
1393 | your program into its internal semi-compiled form. That means that | |
1394 | compiling with this backend will not help improve the runtime | |
1395 | execution speed of your program but may improve the start-up time. | |
1396 | Depending on the environment in which your program runs this may be | |
1397 | either a help or a hindrance. | |
1398 | ||
1399 | =head1 OPTIONS | |
1400 | ||
1401 | If there are any non-option arguments, they are taken to be | |
1402 | names of objects to be saved (probably doesn't work properly yet). | |
1403 | Without extra arguments, it saves the main program. | |
1404 | ||
1405 | =over 4 | |
1406 | ||
1407 | =item B<-ofilename> | |
1408 | ||
1409 | Output to filename instead of STDOUT | |
1410 | ||
1411 | =item B<-v> | |
1412 | ||
1413 | Verbose compilation (currently gives a few compilation statistics). | |
1414 | ||
1415 | =item B<--> | |
1416 | ||
1417 | Force end of options | |
1418 | ||
1419 | =item B<-uPackname> | |
1420 | ||
1421 | Force apparently unused subs from package Packname to be compiled. | |
1422 | This allows programs to use eval "foo()" even when sub foo is never | |
1423 | seen to be used at compile time. The down side is that any subs which | |
1424 | really are never used also have code generated. This option is | |
1425 | necessary, for example, if you have a signal handler foo which you | |
1426 | initialise with C<$SIG{BAR} = "foo">. A better fix, though, is just | |
1427 | to change it to C<$SIG{BAR} = \&foo>. You can have multiple B<-u> | |
1428 | options. The compiler tries to figure out which packages may possibly | |
1429 | have subs in which need compiling but the current version doesn't do | |
1430 | it very well. In particular, it is confused by nested packages (i.e. | |
1431 | of the form C<A::B>) where package C<A> does not contain any subs. | |
1432 | ||
1433 | =item B<-D> | |
1434 | ||
1435 | Debug options (concatenated or separate flags like C<perl -D>). | |
1436 | ||
1437 | =item B<-Do> | |
1438 | ||
1439 | OPs, prints each OP as it's processed | |
1440 | ||
1441 | =item B<-Dc> | |
1442 | ||
1443 | COPs, prints COPs as processed (incl. file & line num) | |
1444 | ||
1445 | =item B<-DA> | |
1446 | ||
1447 | prints AV information on saving | |
1448 | ||
1449 | =item B<-DC> | |
1450 | ||
1451 | prints CV information on saving | |
1452 | ||
1453 | =item B<-DM> | |
1454 | ||
1455 | prints MAGIC information on saving | |
1456 | ||
1457 | =item B<-f> | |
1458 | ||
1459 | Force optimisations on or off one at a time. | |
1460 | ||
1461 | =item B<-fcog> | |
1462 | ||
1463 | Copy-on-grow: PVs declared and initialised statically. | |
1464 | ||
1465 | =item B<-fno-cog> | |
1466 | ||
1467 | No copy-on-grow. | |
1468 | ||
1469 | =item B<-On> | |
1470 | ||
1471 | Optimisation level (n = 0, 1, 2, ...). B<-O> means B<-O1>. Currently, | |
1472 | B<-O1> and higher set B<-fcog>. | |
1473 | ||
1474 | =head1 EXAMPLES | |
1475 | ||
1476 | perl -MO=C,-ofoo.c foo.pl | |
1477 | perl cc_harness -o foo foo.c | |
1478 | ||
1479 | Note that C<cc_harness> lives in the C<B> subdirectory of your perl | |
1480 | library directory. The utility called C<perlcc> may also be used to | |
1481 | help make use of this compiler. | |
1482 | ||
1483 | perl -MO=C,-v,-DcA bar.pl > /dev/null | |
1484 | ||
1485 | =head1 BUGS | |
1486 | ||
1487 | Plenty. Current status: experimental. | |
7f20e9dd GS |
1488 | |
1489 | =head1 AUTHOR | |
1490 | ||
1491 | Malcolm Beattie, C<mbeattie@sable.ox.ac.uk> | |
1492 | ||
1493 | =cut |