Commit | Line | Data |
---|---|---|
a798dbf2 MB |
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); | |
0cc1d052 NIS |
47 | @EXPORT_OK = qw(output_all output_boilerplate output_main mark_unused |
48 | init_sections set_callback save_unused_subs objsym save_context); | |
a798dbf2 MB |
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 | |
56eca212 | 52 | threadsv_names main_cv init_av opnumber amagic_generation |
b874ff32 | 53 | AVf_REAL HEf_SVKEY); |
a798dbf2 MB |
54 | use B::Asmdata qw(@specialsv_name); |
55 | ||
56 | use FileHandle; | |
57 | use Carp; | |
58 | use strict; | |
f0cd5c3a | 59 | use Config; |
a798dbf2 MB |
60 | |
61 | my $hv_index = 0; | |
62 | my $gv_index = 0; | |
63 | my $re_index = 0; | |
64 | my $pv_index = 0; | |
65 | my $anonsub_index = 0; | |
44887cfa | 66 | my $initsub_index = 0; |
a798dbf2 MB |
67 | |
68 | my %symtable; | |
af765ed9 | 69 | my %xsub; |
a798dbf2 MB |
70 | my $warn_undefined_syms; |
71 | my $verbose; | |
66a2622e | 72 | my %unused_sub_packages; |
a798dbf2 | 73 | my $nullop_count; |
66a2622e | 74 | my $pv_copy_on_grow = 0; |
a798dbf2 | 75 | my ($debug_cops, $debug_av, $debug_cv, $debug_mg); |
dc333d64 | 76 | my $max_string_len; |
a798dbf2 MB |
77 | |
78 | my @threadsv_names; | |
79 | BEGIN { | |
80 | @threadsv_names = threadsv_names(); | |
81 | } | |
82 | ||
83 | # Code sections | |
66a2622e | 84 | my ($init, $decl, $symsect, $binopsect, $condopsect, $copsect, |
7934575e | 85 | $padopsect, $listopsect, $logopsect, $loopsect, $opsect, $pmopsect, |
a798dbf2 MB |
86 | $pvopsect, $svopsect, $unopsect, $svsect, $xpvsect, $xpvavsect, |
87 | $xpvhvsect, $xpvcvsect, $xpvivsect, $xpvnvsect, $xpvmgsect, $xpvlvsect, | |
af765ed9 | 88 | $xrvsect, $xpvbmsect, $xpviosect ); |
a798dbf2 MB |
89 | |
90 | sub walk_and_save_optree; | |
91 | my $saveoptree_callback = \&walk_and_save_optree; | |
92 | sub set_callback { $saveoptree_callback = shift } | |
93 | sub saveoptree { &$saveoptree_callback(@_) } | |
94 | ||
95 | sub walk_and_save_optree { | |
96 | my ($name, $root, $start) = @_; | |
97 | walkoptree($root, "save"); | |
98 | return objsym($start); | |
99 | } | |
100 | ||
101 | # Current workaround/fix for op_free() trying to free statically | |
102 | # defined OPs is to set op_seq = -1 and check for that in op_free(). | |
103 | # Instead of hardwiring -1 in place of $op->seq, we use $op_seq | |
104 | # so that it can be changed back easily if necessary. In fact, to | |
105 | # stop compilers from moaning about a U16 being initialised with an | |
106 | # uncast -1 (the printf format is %d so we can't tweak it), we have | |
107 | # to "know" that op_seq is a U16 and use 65535. Ugh. | |
108 | my $op_seq = 65535; | |
109 | ||
0cc1d052 NIS |
110 | # Look this up here so we can do just a number compare |
111 | # rather than looking up the name of every BASEOP in B::OP | |
112 | my $OP_THREADSV = opnumber('threadsv'); | |
a798dbf2 MB |
113 | |
114 | sub savesym { | |
115 | my ($obj, $value) = @_; | |
116 | my $sym = sprintf("s\\_%x", $$obj); | |
117 | $symtable{$sym} = $value; | |
118 | } | |
119 | ||
120 | sub objsym { | |
121 | my $obj = shift; | |
122 | return $symtable{sprintf("s\\_%x", $$obj)}; | |
123 | } | |
124 | ||
125 | sub getsym { | |
126 | my $sym = shift; | |
127 | my $value; | |
128 | ||
129 | return 0 if $sym eq "sym_0"; # special case | |
130 | $value = $symtable{$sym}; | |
131 | if (defined($value)) { | |
132 | return $value; | |
133 | } else { | |
134 | warn "warning: undefined symbol $sym\n" if $warn_undefined_syms; | |
135 | return "UNUSED"; | |
136 | } | |
137 | } | |
138 | ||
139 | sub savepv { | |
66a2622e NIS |
140 | my $pv = shift; |
141 | $pv = '' unless defined $pv; # Is this sane ? | |
a798dbf2 MB |
142 | my $pvsym = 0; |
143 | my $pvmax = 0; | |
66a2622e | 144 | if ($pv_copy_on_grow) { |
a798dbf2 MB |
145 | my $cstring = cstring($pv); |
146 | if ($cstring ne "0") { # sic | |
147 | $pvsym = sprintf("pv%d", $pv_index++); | |
148 | $decl->add(sprintf("static char %s[] = %s;", $pvsym, $cstring)); | |
149 | } | |
150 | } else { | |
151 | $pvmax = length($pv) + 1; | |
152 | } | |
153 | return ($pvsym, $pvmax); | |
154 | } | |
155 | ||
156 | sub B::OP::save { | |
157 | my ($op, $level) = @_; | |
2c0b28dd VB |
158 | my $sym = objsym($op); |
159 | return $sym if defined $sym; | |
a798dbf2 MB |
160 | my $type = $op->type; |
161 | $nullop_count++ unless $type; | |
0cc1d052 | 162 | if ($type == $OP_THREADSV) { |
a798dbf2 MB |
163 | # saves looking up ppaddr but it's a bit naughty to hard code this |
164 | $init->add(sprintf("(void)find_threadsv(%s);", | |
165 | cstring($threadsv_names[$op->targ]))); | |
166 | } | |
dc333d64 GS |
167 | $opsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x", |
168 | ${$op->next}, ${$op->sibling}, $op->targ, | |
a798dbf2 | 169 | $type, $op_seq, $op->flags, $op->private)); |
dc333d64 GS |
170 | my $ix = $opsect->index; |
171 | $init->add(sprintf("op_list[$ix].op_ppaddr = %s;", $op->ppaddr)); | |
172 | savesym($op, "&op_list[$ix]"); | |
a798dbf2 MB |
173 | } |
174 | ||
175 | sub B::FAKEOP::new { | |
176 | my ($class, %objdata) = @_; | |
177 | bless \%objdata, $class; | |
178 | } | |
179 | ||
180 | sub B::FAKEOP::save { | |
181 | my ($op, $level) = @_; | |
dc333d64 GS |
182 | $opsect->add(sprintf("%s, %s, NULL, %u, %u, %u, 0x%x, 0x%x", |
183 | $op->next, $op->sibling, $op->targ, | |
a798dbf2 | 184 | $op->type, $op_seq, $op->flags, $op->private)); |
dc333d64 GS |
185 | my $ix = $opsect->index; |
186 | $init->add(sprintf("op_list[$ix].op_ppaddr = %s;", $op->ppaddr)); | |
187 | return "&op_list[$ix]"; | |
a798dbf2 MB |
188 | } |
189 | ||
190 | sub B::FAKEOP::next { $_[0]->{"next"} || 0 } | |
191 | sub B::FAKEOP::type { $_[0]->{type} || 0} | |
192 | sub B::FAKEOP::sibling { $_[0]->{sibling} || 0 } | |
193 | sub B::FAKEOP::ppaddr { $_[0]->{ppaddr} || 0 } | |
194 | sub B::FAKEOP::targ { $_[0]->{targ} || 0 } | |
195 | sub B::FAKEOP::flags { $_[0]->{flags} || 0 } | |
196 | sub B::FAKEOP::private { $_[0]->{private} || 0 } | |
197 | ||
198 | sub B::UNOP::save { | |
199 | my ($op, $level) = @_; | |
2c0b28dd VB |
200 | my $sym = objsym($op); |
201 | return $sym if defined $sym; | |
dc333d64 GS |
202 | $unopsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, s\\_%x", |
203 | ${$op->next}, ${$op->sibling}, | |
a798dbf2 MB |
204 | $op->targ, $op->type, $op_seq, $op->flags, |
205 | $op->private, ${$op->first})); | |
dc333d64 GS |
206 | my $ix = $unopsect->index; |
207 | $init->add(sprintf("unop_list[$ix].op_ppaddr = %s;", $op->ppaddr)); | |
208 | savesym($op, "(OP*)&unop_list[$ix]"); | |
a798dbf2 MB |
209 | } |
210 | ||
211 | sub B::BINOP::save { | |
212 | my ($op, $level) = @_; | |
2c0b28dd VB |
213 | my $sym = objsym($op); |
214 | return $sym if defined $sym; | |
dc333d64 GS |
215 | $binopsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x", |
216 | ${$op->next}, ${$op->sibling}, | |
a798dbf2 MB |
217 | $op->targ, $op->type, $op_seq, $op->flags, |
218 | $op->private, ${$op->first}, ${$op->last})); | |
dc333d64 GS |
219 | my $ix = $binopsect->index; |
220 | $init->add(sprintf("binop_list[$ix].op_ppaddr = %s;", $op->ppaddr)); | |
221 | savesym($op, "(OP*)&binop_list[$ix]"); | |
a798dbf2 MB |
222 | } |
223 | ||
224 | sub B::LISTOP::save { | |
225 | my ($op, $level) = @_; | |
2c0b28dd VB |
226 | my $sym = objsym($op); |
227 | return $sym if defined $sym; | |
847a5fae | 228 | $listopsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x", |
dc333d64 | 229 | ${$op->next}, ${$op->sibling}, |
a798dbf2 | 230 | $op->targ, $op->type, $op_seq, $op->flags, |
847a5fae | 231 | $op->private, ${$op->first}, ${$op->last})); |
dc333d64 GS |
232 | my $ix = $listopsect->index; |
233 | $init->add(sprintf("listop_list[$ix].op_ppaddr = %s;", $op->ppaddr)); | |
234 | savesym($op, "(OP*)&listop_list[$ix]"); | |
a798dbf2 MB |
235 | } |
236 | ||
237 | sub B::LOGOP::save { | |
238 | my ($op, $level) = @_; | |
2c0b28dd VB |
239 | my $sym = objsym($op); |
240 | return $sym if defined $sym; | |
dc333d64 GS |
241 | $logopsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x", |
242 | ${$op->next}, ${$op->sibling}, | |
a798dbf2 MB |
243 | $op->targ, $op->type, $op_seq, $op->flags, |
244 | $op->private, ${$op->first}, ${$op->other})); | |
dc333d64 GS |
245 | my $ix = $logopsect->index; |
246 | $init->add(sprintf("logop_list[$ix].op_ppaddr = %s;", $op->ppaddr)); | |
247 | savesym($op, "(OP*)&logop_list[$ix]"); | |
a798dbf2 MB |
248 | } |
249 | ||
a798dbf2 MB |
250 | sub B::LOOP::save { |
251 | my ($op, $level) = @_; | |
2c0b28dd VB |
252 | my $sym = objsym($op); |
253 | return $sym if defined $sym; | |
a798dbf2 MB |
254 | #warn sprintf("LOOP: redoop %s, nextop %s, lastop %s\n", |
255 | # peekop($op->redoop), peekop($op->nextop), | |
256 | # peekop($op->lastop)); # debug | |
847a5fae | 257 | $loopsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, s\\_%x, s\\_%x, s\\_%x", |
dc333d64 | 258 | ${$op->next}, ${$op->sibling}, |
a798dbf2 MB |
259 | $op->targ, $op->type, $op_seq, $op->flags, |
260 | $op->private, ${$op->first}, ${$op->last}, | |
847a5fae | 261 | ${$op->redoop}, ${$op->nextop}, |
a798dbf2 | 262 | ${$op->lastop})); |
dc333d64 GS |
263 | my $ix = $loopsect->index; |
264 | $init->add(sprintf("loop_list[$ix].op_ppaddr = %s;", $op->ppaddr)); | |
265 | savesym($op, "(OP*)&loop_list[$ix]"); | |
a798dbf2 MB |
266 | } |
267 | ||
268 | sub B::PVOP::save { | |
269 | my ($op, $level) = @_; | |
2c0b28dd VB |
270 | my $sym = objsym($op); |
271 | return $sym if defined $sym; | |
dc333d64 GS |
272 | $pvopsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, %s", |
273 | ${$op->next}, ${$op->sibling}, | |
a798dbf2 MB |
274 | $op->targ, $op->type, $op_seq, $op->flags, |
275 | $op->private, cstring($op->pv))); | |
dc333d64 GS |
276 | my $ix = $pvopsect->index; |
277 | $init->add(sprintf("pvop_list[$ix].op_ppaddr = %s;", $op->ppaddr)); | |
278 | savesym($op, "(OP*)&pvop_list[$ix]"); | |
a798dbf2 MB |
279 | } |
280 | ||
281 | sub B::SVOP::save { | |
282 | my ($op, $level) = @_; | |
2c0b28dd VB |
283 | my $sym = objsym($op); |
284 | return $sym if defined $sym; | |
a798dbf2 | 285 | my $svsym = $op->sv->save; |
dc333d64 GS |
286 | $svopsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, Nullsv", |
287 | ${$op->next}, ${$op->sibling}, | |
a798dbf2 | 288 | $op->targ, $op->type, $op_seq, $op->flags, |
5712119f | 289 | $op->private)); |
dc333d64 GS |
290 | my $ix = $svopsect->index; |
291 | $init->add(sprintf("svop_list[$ix].op_ppaddr = %s;", $op->ppaddr)); | |
292 | $init->add("svop_list[$ix].op_sv = (SV*)$svsym;"); | |
293 | savesym($op, "(OP*)&svop_list[$ix]"); | |
a798dbf2 MB |
294 | } |
295 | ||
7934575e | 296 | sub B::PADOP::save { |
a798dbf2 | 297 | my ($op, $level) = @_; |
2c0b28dd VB |
298 | my $sym = objsym($op); |
299 | return $sym if defined $sym; | |
93865851 | 300 | $padopsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, 0", |
dc333d64 | 301 | ${$op->next}, ${$op->sibling}, |
a798dbf2 MB |
302 | $op->targ, $op->type, $op_seq, $op->flags, |
303 | $op->private)); | |
dc333d64 GS |
304 | $init->add(sprintf("padop_list[%d].op_ppaddr = %s;", $padopsect->index, $op->ppaddr)); |
305 | my $ix = $padopsect->index; | |
306 | $init->add(sprintf("padop_list[$ix].op_padix = %ld;", $op->padix)); | |
307 | savesym($op, "(OP*)&padop_list[$ix]"); | |
a798dbf2 MB |
308 | } |
309 | ||
310 | sub B::COP::save { | |
311 | my ($op, $level) = @_; | |
2c0b28dd VB |
312 | my $sym = objsym($op); |
313 | return $sym if defined $sym; | |
57843af0 | 314 | warn sprintf("COP: line %d file %s\n", $op->line, $op->file) |
a798dbf2 | 315 | if $debug_cops; |
93865851 | 316 | $copsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, %s, NULL, NULL, %u, %d, %u", |
dc333d64 | 317 | ${$op->next}, ${$op->sibling}, |
a798dbf2 MB |
318 | $op->targ, $op->type, $op_seq, $op->flags, |
319 | $op->private, cstring($op->label), $op->cop_seq, | |
320 | $op->arybase, $op->line)); | |
dc333d64 GS |
321 | my $ix = $copsect->index; |
322 | $init->add(sprintf("cop_list[$ix].op_ppaddr = %s;", $op->ppaddr)); | |
323 | $init->add(sprintf("CopFILE_set(&cop_list[$ix], %s);", cstring($op->file)), | |
324 | sprintf("CopSTASHPV_set(&cop_list[$ix], %s);", cstring($op->stashpv))); | |
325 | savesym($op, "(OP*)&cop_list[$ix]"); | |
a798dbf2 MB |
326 | } |
327 | ||
328 | sub B::PMOP::save { | |
329 | my ($op, $level) = @_; | |
2c0b28dd VB |
330 | my $sym = objsym($op); |
331 | return $sym if defined $sym; | |
a798dbf2 MB |
332 | my $replroot = $op->pmreplroot; |
333 | my $replstart = $op->pmreplstart; | |
334 | my $replrootfield = sprintf("s\\_%x", $$replroot); | |
335 | my $replstartfield = sprintf("s\\_%x", $$replstart); | |
336 | my $gvsym; | |
337 | my $ppaddr = $op->ppaddr; | |
338 | if ($$replroot) { | |
339 | # OP_PUSHRE (a mutated version of OP_MATCH for the regexp | |
340 | # argument to a split) stores a GV in op_pmreplroot instead | |
341 | # of a substitution syntax tree. We don't want to walk that... | |
3f872cb9 | 342 | if ($op->name eq "pushre") { |
a798dbf2 MB |
343 | $gvsym = $replroot->save; |
344 | # warn "PMOP::save saving a pp_pushre with GV $gvsym\n"; # debug | |
345 | $replrootfield = 0; | |
346 | } else { | |
347 | $replstartfield = saveoptree("*ignore*", $replroot, $replstart); | |
348 | } | |
349 | } | |
350 | # pmnext handling is broken in perl itself, I think. Bad op_pmnext | |
351 | # fields aren't noticed in perl's runtime (unless you try reset) but we | |
352 | # segfault when trying to dereference it to find op->op_pmnext->op_type | |
847a5fae | 353 | $pmopsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, %s, %s, 0, 0, 0x%x, 0x%x", |
dc333d64 | 354 | ${$op->next}, ${$op->sibling}, $op->targ, |
a798dbf2 | 355 | $op->type, $op_seq, $op->flags, $op->private, |
847a5fae | 356 | ${$op->first}, ${$op->last}, |
a798dbf2 MB |
357 | $replrootfield, $replstartfield, |
358 | $op->pmflags, $op->pmpermflags,)); | |
359 | my $pm = sprintf("pmop_list[%d]", $pmopsect->index); | |
dc333d64 | 360 | $init->add(sprintf("$pm.op_ppaddr = %s;", $ppaddr)); |
a798dbf2 MB |
361 | my $re = $op->precomp; |
362 | if (defined($re)) { | |
363 | my $resym = sprintf("re%d", $re_index++); | |
364 | $decl->add(sprintf("static char *$resym = %s;", cstring($re))); | |
365 | $init->add(sprintf("$pm.op_pmregexp = pregcomp($resym, $resym + %u, &$pm);", | |
366 | length($re))); | |
367 | } | |
368 | if ($gvsym) { | |
369 | $init->add("$pm.op_pmreplroot = (OP*)$gvsym;"); | |
370 | } | |
dc333d64 | 371 | savesym($op, "(OP*)&$pm"); |
a798dbf2 MB |
372 | } |
373 | ||
374 | sub B::SPECIAL::save { | |
375 | my ($sv) = @_; | |
376 | # special case: $$sv is not the address but an index into specialsv_list | |
377 | # warn "SPECIAL::save specialsv $$sv\n"; # debug | |
378 | my $sym = $specialsv_name[$$sv]; | |
379 | if (!defined($sym)) { | |
380 | confess "unknown specialsv index $$sv passed to B::SPECIAL::save"; | |
381 | } | |
382 | return $sym; | |
383 | } | |
384 | ||
385 | sub B::OBJECT::save {} | |
386 | ||
387 | sub B::NULL::save { | |
388 | my ($sv) = @_; | |
389 | my $sym = objsym($sv); | |
390 | return $sym if defined $sym; | |
391 | # warn "Saving SVt_NULL SV\n"; # debug | |
392 | # debug | |
87d7fd28 GS |
393 | if ($$sv == 0) { |
394 | warn "NULL::save for sv = 0 called from @{[(caller(1))[3]]}\n"; | |
395 | return savesym($sv, "Nullsv /* XXX */"); | |
396 | } | |
932e9ff9 | 397 | $svsect->add(sprintf("0, %u, 0x%x", $sv->REFCNT , $sv->FLAGS)); |
a798dbf2 MB |
398 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
399 | } | |
400 | ||
401 | sub B::IV::save { | |
402 | my ($sv) = @_; | |
403 | my $sym = objsym($sv); | |
404 | return $sym if defined $sym; | |
405 | $xpvivsect->add(sprintf("0, 0, 0, %d", $sv->IVX)); | |
406 | $svsect->add(sprintf("&xpviv_list[%d], %lu, 0x%x", | |
932e9ff9 | 407 | $xpvivsect->index, $sv->REFCNT , $sv->FLAGS)); |
a798dbf2 MB |
408 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
409 | } | |
410 | ||
411 | sub B::NV::save { | |
412 | my ($sv) = @_; | |
413 | my $sym = objsym($sv); | |
414 | return $sym if defined $sym; | |
56eca212 GS |
415 | my $val= $sv->NVX; |
416 | $val .= '.00' if $val =~ /^-?\d+$/; | |
417 | $xpvnvsect->add(sprintf("0, 0, 0, %d, %s", $sv->IVX, $val)); | |
a798dbf2 | 418 | $svsect->add(sprintf("&xpvnv_list[%d], %lu, 0x%x", |
932e9ff9 | 419 | $xpvnvsect->index, $sv->REFCNT , $sv->FLAGS)); |
a798dbf2 MB |
420 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
421 | } | |
422 | ||
dc333d64 GS |
423 | sub savepvn { |
424 | my ($dest,$pv) = @_; | |
425 | my @res; | |
426 | if (defined $max_string_len && length($pv) > $max_string_len) { | |
427 | push @res, sprintf("New(0,%s,%u,char);", $dest, length($pv)+1); | |
428 | my $offset = 0; | |
429 | while (length $pv) { | |
430 | my $str = substr $pv, 0, $max_string_len, ''; | |
431 | push @res, sprintf("Copy(%s,$dest+$offset,%u,char);", | |
432 | cstring($str), length($str)); | |
433 | $offset += length $str; | |
434 | } | |
435 | push @res, sprintf("%s[%u] = '\\0';", $dest, $offset); | |
436 | } | |
437 | else { | |
438 | push @res, sprintf("%s = savepvn(%s, %u);", $dest, | |
439 | cstring($pv), length($pv)); | |
440 | } | |
441 | return @res; | |
442 | } | |
443 | ||
a798dbf2 MB |
444 | sub B::PVLV::save { |
445 | my ($sv) = @_; | |
446 | my $sym = objsym($sv); | |
447 | return $sym if defined $sym; | |
448 | my $pv = $sv->PV; | |
449 | my $len = length($pv); | |
450 | my ($pvsym, $pvmax) = savepv($pv); | |
451 | my ($lvtarg, $lvtarg_sym); | |
452 | $xpvlvsect->add(sprintf("%s, %u, %u, %d, %g, 0, 0, %u, %u, 0, %s", | |
453 | $pvsym, $len, $pvmax, $sv->IVX, $sv->NVX, | |
454 | $sv->TARGOFF, $sv->TARGLEN, cchar($sv->TYPE))); | |
455 | $svsect->add(sprintf("&xpvlv_list[%d], %lu, 0x%x", | |
932e9ff9 | 456 | $xpvlvsect->index, $sv->REFCNT , $sv->FLAGS)); |
a798dbf2 | 457 | if (!$pv_copy_on_grow) { |
dc333d64 GS |
458 | $init->add(savepvn(sprintf("xpvlv_list[%d].xpv_pv", |
459 | $xpvlvsect->index), $pv)); | |
a798dbf2 MB |
460 | } |
461 | $sv->save_magic; | |
462 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); | |
463 | } | |
464 | ||
465 | sub B::PVIV::save { | |
466 | my ($sv) = @_; | |
467 | my $sym = objsym($sv); | |
468 | return $sym if defined $sym; | |
469 | my $pv = $sv->PV; | |
470 | my $len = length($pv); | |
471 | my ($pvsym, $pvmax) = savepv($pv); | |
472 | $xpvivsect->add(sprintf("%s, %u, %u, %d", $pvsym, $len, $pvmax, $sv->IVX)); | |
473 | $svsect->add(sprintf("&xpviv_list[%d], %u, 0x%x", | |
932e9ff9 | 474 | $xpvivsect->index, $sv->REFCNT , $sv->FLAGS)); |
a798dbf2 | 475 | if (!$pv_copy_on_grow) { |
dc333d64 GS |
476 | $init->add(savepvn(sprintf("xpviv_list[%d].xpv_pv", |
477 | $xpvivsect->index), $pv)); | |
a798dbf2 MB |
478 | } |
479 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); | |
480 | } | |
481 | ||
482 | sub B::PVNV::save { | |
483 | my ($sv) = @_; | |
484 | my $sym = objsym($sv); | |
485 | return $sym if defined $sym; | |
66a2622e NIS |
486 | my $pv = $sv->PV; |
487 | $pv = '' unless defined $pv; | |
a798dbf2 MB |
488 | my $len = length($pv); |
489 | my ($pvsym, $pvmax) = savepv($pv); | |
56eca212 GS |
490 | my $val= $sv->NVX; |
491 | $val .= '.00' if $val =~ /^-?\d+$/; | |
a798dbf2 | 492 | $xpvnvsect->add(sprintf("%s, %u, %u, %d, %s", |
56eca212 | 493 | $pvsym, $len, $pvmax, $sv->IVX, $val)); |
a798dbf2 | 494 | $svsect->add(sprintf("&xpvnv_list[%d], %lu, 0x%x", |
932e9ff9 | 495 | $xpvnvsect->index, $sv->REFCNT , $sv->FLAGS)); |
a798dbf2 | 496 | if (!$pv_copy_on_grow) { |
dc333d64 GS |
497 | $init->add(savepvn(sprintf("xpvnv_list[%d].xpv_pv", |
498 | $xpvnvsect->index), $pv)); | |
a798dbf2 MB |
499 | } |
500 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); | |
501 | } | |
502 | ||
503 | sub B::BM::save { | |
504 | my ($sv) = @_; | |
505 | my $sym = objsym($sv); | |
506 | return $sym if defined $sym; | |
507 | my $pv = $sv->PV . "\0" . $sv->TABLE; | |
508 | my $len = length($pv); | |
509 | $xpvbmsect->add(sprintf("0, %u, %u, %d, %s, 0, 0, %d, %u, 0x%x", | |
510 | $len, $len + 258, $sv->IVX, $sv->NVX, | |
511 | $sv->USEFUL, $sv->PREVIOUS, $sv->RARE)); | |
512 | $svsect->add(sprintf("&xpvbm_list[%d], %lu, 0x%x", | |
932e9ff9 | 513 | $xpvbmsect->index, $sv->REFCNT , $sv->FLAGS)); |
a798dbf2 | 514 | $sv->save_magic; |
dc333d64 GS |
515 | $init->add(savepvn(sprintf("xpvbm_list[%d].xpv_pv", |
516 | $xpvbmsect->index), $pv), | |
a798dbf2 MB |
517 | sprintf("xpvbm_list[%d].xpv_cur = %u;", |
518 | $xpvbmsect->index, $len - 257)); | |
519 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); | |
520 | } | |
521 | ||
522 | sub B::PV::save { | |
523 | my ($sv) = @_; | |
524 | my $sym = objsym($sv); | |
525 | return $sym if defined $sym; | |
526 | my $pv = $sv->PV; | |
527 | my $len = length($pv); | |
528 | my ($pvsym, $pvmax) = savepv($pv); | |
529 | $xpvsect->add(sprintf("%s, %u, %u", $pvsym, $len, $pvmax)); | |
530 | $svsect->add(sprintf("&xpv_list[%d], %lu, 0x%x", | |
932e9ff9 | 531 | $xpvsect->index, $sv->REFCNT , $sv->FLAGS)); |
a798dbf2 | 532 | if (!$pv_copy_on_grow) { |
dc333d64 GS |
533 | $init->add(savepvn(sprintf("xpv_list[%d].xpv_pv", |
534 | $xpvsect->index), $pv)); | |
a798dbf2 MB |
535 | } |
536 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); | |
537 | } | |
538 | ||
539 | sub B::PVMG::save { | |
540 | my ($sv) = @_; | |
541 | my $sym = objsym($sv); | |
542 | return $sym if defined $sym; | |
543 | my $pv = $sv->PV; | |
544 | my $len = length($pv); | |
545 | my ($pvsym, $pvmax) = savepv($pv); | |
546 | $xpvmgsect->add(sprintf("%s, %u, %u, %d, %s, 0, 0", | |
547 | $pvsym, $len, $pvmax, $sv->IVX, $sv->NVX)); | |
548 | $svsect->add(sprintf("&xpvmg_list[%d], %lu, 0x%x", | |
932e9ff9 | 549 | $xpvmgsect->index, $sv->REFCNT , $sv->FLAGS)); |
a798dbf2 | 550 | if (!$pv_copy_on_grow) { |
dc333d64 GS |
551 | $init->add(savepvn(sprintf("xpvmg_list[%d].xpv_pv", |
552 | $xpvmgsect->index), $pv)); | |
a798dbf2 MB |
553 | } |
554 | $sym = savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); | |
555 | $sv->save_magic; | |
556 | return $sym; | |
557 | } | |
558 | ||
559 | sub B::PVMG::save_magic { | |
560 | my ($sv) = @_; | |
561 | #warn sprintf("saving magic for %s (0x%x)\n", class($sv), $$sv); # debug | |
562 | my $stash = $sv->SvSTASH; | |
56eca212 | 563 | $stash->save; |
a798dbf2 MB |
564 | if ($$stash) { |
565 | warn sprintf("xmg_stash = %s (0x%x)\n", $stash->NAME, $$stash) | |
566 | if $debug_mg; | |
567 | # XXX Hope stash is already going to be saved. | |
568 | $init->add(sprintf("SvSTASH(s\\_%x) = s\\_%x;", $$sv, $$stash)); | |
569 | } | |
570 | my @mgchain = $sv->MAGIC; | |
88b39979 | 571 | my ($mg, $type, $obj, $ptr,$len,$ptrsv); |
a798dbf2 MB |
572 | foreach $mg (@mgchain) { |
573 | $type = $mg->TYPE; | |
574 | $obj = $mg->OBJ; | |
575 | $ptr = $mg->PTR; | |
88b39979 | 576 | $len=$mg->LENGTH; |
a798dbf2 MB |
577 | if ($debug_mg) { |
578 | warn sprintf("magic %s (0x%x), obj %s (0x%x), type %s, ptr %s\n", | |
579 | class($sv), $$sv, class($obj), $$obj, | |
580 | cchar($type), cstring($ptr)); | |
581 | } | |
56eca212 | 582 | $obj->save; |
88b39979 VB |
583 | if ($len == HEf_SVKEY){ |
584 | #The pointer is an SV* | |
585 | $ptrsv=svref_2object($ptr)->save; | |
5ab5c7a4 | 586 | $init->add(sprintf("sv_magic((SV*)s\\_%x, (SV*)s\\_%x, %s,(char *) %s, %d);", |
88b39979 VB |
587 | $$sv, $$obj, cchar($type),$ptrsv,$len)); |
588 | }else{ | |
589 | $init->add(sprintf("sv_magic((SV*)s\\_%x, (SV*)s\\_%x, %s, %s, %d);", | |
a798dbf2 | 590 | $$sv, $$obj, cchar($type),cstring($ptr),$len)); |
88b39979 | 591 | } |
a798dbf2 MB |
592 | } |
593 | } | |
594 | ||
595 | sub B::RV::save { | |
596 | my ($sv) = @_; | |
597 | my $sym = objsym($sv); | |
598 | return $sym if defined $sym; | |
66a2622e NIS |
599 | my $rv = $sv->RV->save; |
600 | $rv =~ s/^\([AGHS]V\s*\*\)\s*(\&sv_list.*)$/$1/; | |
601 | $xrvsect->add($rv); | |
a798dbf2 | 602 | $svsect->add(sprintf("&xrv_list[%d], %lu, 0x%x", |
932e9ff9 | 603 | $xrvsect->index, $sv->REFCNT , $sv->FLAGS)); |
a798dbf2 MB |
604 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
605 | } | |
606 | ||
607 | sub try_autoload { | |
608 | my ($cvstashname, $cvname) = @_; | |
609 | warn sprintf("No definition for sub %s::%s\n", $cvstashname, $cvname); | |
610 | # Handle AutoLoader classes explicitly. Any more general AUTOLOAD | |
611 | # use should be handled by the class itself. | |
612 | no strict 'refs'; | |
613 | my $isa = \@{"$cvstashname\::ISA"}; | |
614 | if (grep($_ eq "AutoLoader", @$isa)) { | |
615 | warn "Forcing immediate load of sub derived from AutoLoader\n"; | |
616 | # Tweaked version of AutoLoader::AUTOLOAD | |
617 | my $dir = $cvstashname; | |
618 | $dir =~ s(::)(/)g; | |
619 | eval { require "auto/$dir/$cvname.al" }; | |
620 | if ($@) { | |
621 | warn qq(failed require "auto/$dir/$cvname.al": $@\n); | |
622 | return 0; | |
623 | } else { | |
624 | return 1; | |
625 | } | |
626 | } | |
627 | } | |
e9a14d94 | 628 | sub Dummy_initxs{}; |
a798dbf2 MB |
629 | sub B::CV::save { |
630 | my ($cv) = @_; | |
631 | my $sym = objsym($cv); | |
632 | if (defined($sym)) { | |
633 | # warn sprintf("CV 0x%x already saved as $sym\n", $$cv); # debug | |
634 | return $sym; | |
635 | } | |
636 | # Reserve a place in svsect and xpvcvsect and record indices | |
af765ed9 | 637 | my $gv = $cv->GV; |
6771324e VB |
638 | my ($cvname, $cvstashname); |
639 | if ($$gv){ | |
640 | $cvname = $gv->NAME; | |
641 | $cvstashname = $gv->STASH->NAME; | |
642 | } | |
af765ed9 VB |
643 | my $root = $cv->ROOT; |
644 | my $cvxsub = $cv->XSUB; | |
e9a14d94 VB |
645 | #INIT is removed from the symbol table, so this call must come |
646 | # from PL_initav->save. Re-bootstrapping will push INIT back in | |
647 | # so nullop should be sent. | |
648 | if ($cvxsub && ($cvname ne "INIT")) { | |
af765ed9 VB |
649 | my $egv = $gv->EGV; |
650 | my $stashname = $egv->STASH->NAME; | |
be6f3502 NIS |
651 | if ($cvname eq "bootstrap") |
652 | { | |
b195d487 | 653 | my $file = $gv->FILE; |
be6f3502 NIS |
654 | $decl->add("/* bootstrap $file */"); |
655 | warn "Bootstrap $stashname $file\n"; | |
656 | $xsub{$stashname}='Dynamic'; | |
657 | # $xsub{$stashname}='Static' unless $xsub{$stashname}; | |
a0e9c8c7 | 658 | return qq/NULL/; |
be6f3502 | 659 | } |
a0e9c8c7 | 660 | warn sprintf("stub for XSUB $cvstashname\:\:$cvname CV 0x%x\n", $$cv) if $debug_cv; |
be6f3502 | 661 | return qq/(perl_get_cv("$stashname\:\:$cvname",TRUE))/; |
e9a14d94 VB |
662 | } |
663 | if ($cvxsub && $cvname eq "INIT") { | |
664 | no strict 'refs'; | |
665 | return svref_2object(\&Dummy_initxs)->save; | |
af765ed9 | 666 | } |
a798dbf2 MB |
667 | my $sv_ix = $svsect->index + 1; |
668 | $svsect->add("svix$sv_ix"); | |
669 | my $xpvcv_ix = $xpvcvsect->index + 1; | |
670 | $xpvcvsect->add("xpvcvix$xpvcv_ix"); | |
671 | # Save symbol now so that GvCV() doesn't recurse back to us via CvGV() | |
672 | $sym = savesym($cv, "&sv_list[$sv_ix]"); | |
a0e9c8c7 | 673 | warn sprintf("saving $cvstashname\:\:$cvname CV 0x%x as $sym\n", $$cv) if $debug_cv; |
a798dbf2 MB |
674 | if (!$$root && !$cvxsub) { |
675 | if (try_autoload($cvstashname, $cvname)) { | |
676 | # Recalculate root and xsub | |
677 | $root = $cv->ROOT; | |
678 | $cvxsub = $cv->XSUB; | |
679 | if ($$root || $cvxsub) { | |
680 | warn "Successful forced autoload\n"; | |
681 | } | |
682 | } | |
683 | } | |
684 | my $startfield = 0; | |
685 | my $padlist = $cv->PADLIST; | |
686 | my $pv = $cv->PV; | |
687 | my $xsub = 0; | |
688 | my $xsubany = "Nullany"; | |
689 | if ($$root) { | |
690 | warn sprintf("saving op tree for CV 0x%x, root = 0x%x\n", | |
691 | $$cv, $$root) if $debug_cv; | |
692 | my $ppname = ""; | |
693 | if ($$gv) { | |
694 | my $stashname = $gv->STASH->NAME; | |
695 | my $gvname = $gv->NAME; | |
696 | if ($gvname ne "__ANON__") { | |
697 | $ppname = (${$gv->FORM} == $$cv) ? "pp_form_" : "pp_sub_"; | |
698 | $ppname .= ($stashname eq "main") ? | |
699 | $gvname : "$stashname\::$gvname"; | |
700 | $ppname =~ s/::/__/g; | |
44887cfa NIS |
701 | if ($gvname eq "INIT"){ |
702 | $ppname .= "_$initsub_index"; | |
703 | $initsub_index++; | |
704 | } | |
a798dbf2 MB |
705 | } |
706 | } | |
707 | if (!$ppname) { | |
708 | $ppname = "pp_anonsub_$anonsub_index"; | |
709 | $anonsub_index++; | |
710 | } | |
711 | $startfield = saveoptree($ppname, $root, $cv->START, $padlist->ARRAY); | |
712 | warn sprintf("done saving op tree for CV 0x%x, name %s, root 0x%x\n", | |
713 | $$cv, $ppname, $$root) if $debug_cv; | |
714 | if ($$padlist) { | |
715 | warn sprintf("saving PADLIST 0x%x for CV 0x%x\n", | |
716 | $$padlist, $$cv) if $debug_cv; | |
717 | $padlist->save; | |
718 | warn sprintf("done saving PADLIST 0x%x for CV 0x%x\n", | |
719 | $$padlist, $$cv) if $debug_cv; | |
720 | } | |
721 | } | |
a798dbf2 MB |
722 | else { |
723 | warn sprintf("No definition for sub %s::%s (unable to autoload)\n", | |
724 | $cvstashname, $cvname); # debug | |
66a2622e NIS |
725 | } |
726 | $pv = '' unless defined $pv; # Avoid use of undef warnings | |
5712119f | 727 | $symsect->add(sprintf("xpvcvix%d\t%s, %u, 0, %d, %s, 0, Nullhv, Nullhv, %s, s\\_%x, $xsub, $xsubany, Nullgv, \"\", %d, s\\_%x, (CV*)s\\_%x, 0x%x", |
a798dbf2 MB |
728 | $xpvcv_ix, cstring($pv), length($pv), $cv->IVX, |
729 | $cv->NVX, $startfield, ${$cv->ROOT}, $cv->DEPTH, | |
5cfd8ad4 VB |
730 | $$padlist, ${$cv->OUTSIDE}, $cv->CvFLAGS)); |
731 | ||
732 | if (${$cv->OUTSIDE} == ${main_cv()}){ | |
733 | $init->add(sprintf("CvOUTSIDE(s\\_%x)=PL_main_cv;",$$cv)); | |
358b5eb8 | 734 | $init->add(sprintf("SvREFCNT_inc(PL_main_cv);")); |
5cfd8ad4 VB |
735 | } |
736 | ||
a798dbf2 MB |
737 | if ($$gv) { |
738 | $gv->save; | |
739 | $init->add(sprintf("CvGV(s\\_%x) = s\\_%x;",$$cv,$$gv)); | |
740 | warn sprintf("done saving GV 0x%x for CV 0x%x\n", | |
741 | $$gv, $$cv) if $debug_cv; | |
742 | } | |
57843af0 | 743 | $init->add(sprintf("CvFILE($sym) = %s;", cstring($cv->FILE))); |
a798dbf2 MB |
744 | my $stash = $cv->STASH; |
745 | if ($$stash) { | |
746 | $stash->save; | |
747 | $init->add(sprintf("CvSTASH(s\\_%x) = s\\_%x;", $$cv, $$stash)); | |
748 | warn sprintf("done saving STASH 0x%x for CV 0x%x\n", | |
749 | $$stash, $$cv) if $debug_cv; | |
750 | } | |
751 | $symsect->add(sprintf("svix%d\t(XPVCV*)&xpvcv_list[%u], %lu, 0x%x", | |
932e9ff9 | 752 | $sv_ix, $xpvcv_ix, $cv->REFCNT +1 , $cv->FLAGS)); |
a798dbf2 MB |
753 | return $sym; |
754 | } | |
755 | ||
756 | sub B::GV::save { | |
be6f3502 | 757 | my ($gv) = @_; |
a798dbf2 MB |
758 | my $sym = objsym($gv); |
759 | if (defined($sym)) { | |
760 | #warn sprintf("GV 0x%x already saved as $sym\n", $$gv); # debug | |
761 | return $sym; | |
762 | } else { | |
763 | my $ix = $gv_index++; | |
764 | $sym = savesym($gv, "gv_list[$ix]"); | |
765 | #warn sprintf("Saving GV 0x%x as $sym\n", $$gv); # debug | |
766 | } | |
87d7fd28 | 767 | my $is_empty = $gv->is_empty; |
a798dbf2 MB |
768 | my $gvname = $gv->NAME; |
769 | my $name = cstring($gv->STASH->NAME . "::" . $gvname); | |
770 | #warn "GV name is $name\n"; # debug | |
a798dbf2 | 771 | my $egvsym; |
87d7fd28 GS |
772 | unless ($is_empty) { |
773 | my $egv = $gv->EGV; | |
774 | if ($$gv != $$egv) { | |
775 | #warn(sprintf("EGV name is %s, saving it now\n", | |
776 | # $egv->STASH->NAME . "::" . $egv->NAME)); # debug | |
777 | $egvsym = $egv->save; | |
778 | } | |
a798dbf2 MB |
779 | } |
780 | $init->add(qq[$sym = gv_fetchpv($name, TRUE, SVt_PV);], | |
781 | sprintf("SvFLAGS($sym) = 0x%x;", $gv->FLAGS), | |
87d7fd28 GS |
782 | sprintf("GvFLAGS($sym) = 0x%x;", $gv->GvFLAGS)); |
783 | $init->add(sprintf("GvLINE($sym) = %u;", $gv->LINE)) unless $is_empty; | |
784 | ||
a798dbf2 MB |
785 | # Shouldn't need to do save_magic since gv_fetchpv handles that |
786 | #$gv->save_magic; | |
787 | my $refcnt = $gv->REFCNT + 1; | |
788 | $init->add(sprintf("SvREFCNT($sym) += %u;", $refcnt - 1)) if $refcnt > 1; | |
87d7fd28 GS |
789 | |
790 | return $sym if $is_empty; | |
791 | ||
a798dbf2 MB |
792 | my $gvrefcnt = $gv->GvREFCNT; |
793 | if ($gvrefcnt > 1) { | |
794 | $init->add(sprintf("GvREFCNT($sym) += %u;", $gvrefcnt - 1)); | |
795 | } | |
796 | if (defined($egvsym)) { | |
797 | # Shared glob *foo = *bar | |
798 | $init->add("gp_free($sym);", | |
799 | "GvGP($sym) = GvGP($egvsym);"); | |
800 | } elsif ($gvname !~ /^([^A-Za-z]|STDIN|STDOUT|STDERR|ARGV|SIG|ENV)$/) { | |
801 | # Don't save subfields of special GVs (*_, *1, *# and so on) | |
802 | # warn "GV::save saving subfields\n"; # debug | |
803 | my $gvsv = $gv->SV; | |
804 | if ($$gvsv) { | |
cfa4c8ee | 805 | $gvsv->save; |
a798dbf2 MB |
806 | $init->add(sprintf("GvSV($sym) = s\\_%x;", $$gvsv)); |
807 | # warn "GV::save \$$name\n"; # debug | |
a798dbf2 MB |
808 | } |
809 | my $gvav = $gv->AV; | |
810 | if ($$gvav) { | |
cfa4c8ee | 811 | $gvav->save; |
a798dbf2 MB |
812 | $init->add(sprintf("GvAV($sym) = s\\_%x;", $$gvav)); |
813 | # warn "GV::save \@$name\n"; # debug | |
a798dbf2 MB |
814 | } |
815 | my $gvhv = $gv->HV; | |
816 | if ($$gvhv) { | |
cfa4c8ee | 817 | $gvhv->save; |
a798dbf2 MB |
818 | $init->add(sprintf("GvHV($sym) = s\\_%x;", $$gvhv)); |
819 | # warn "GV::save \%$name\n"; # debug | |
a798dbf2 MB |
820 | } |
821 | my $gvcv = $gv->CV; | |
be6f3502 NIS |
822 | if ($$gvcv) { |
823 | my $origname=cstring($gvcv->GV->EGV->STASH->NAME . | |
824 | "::" . $gvcv->GV->EGV->NAME); | |
825 | if (0 && $gvcv->XSUB && $name ne $origname) { #XSUB alias | |
826 | # must save as a 'stub' so newXS() has a CV to populate | |
af765ed9 | 827 | $init->add("{ CV *cv;"); |
be6f3502 | 828 | $init->add("\tcv=perl_get_cv($origname,TRUE);"); |
af765ed9 VB |
829 | $init->add("\tGvCV($sym)=cv;"); |
830 | $init->add("\tSvREFCNT_inc((SV *)cv);"); | |
be6f3502 NIS |
831 | $init->add("}"); |
832 | } else { | |
833 | $init->add(sprintf("GvCV($sym) = (CV*)(%s);", $gvcv->save)); | |
834 | # warn "GV::save &$name\n"; # debug | |
835 | } | |
af765ed9 | 836 | } |
b195d487 GS |
837 | $init->add(sprintf("GvFILE($sym) = %s;", cstring($gv->FILE))); |
838 | # warn "GV::save GvFILE(*$name)\n"; # debug | |
a798dbf2 MB |
839 | my $gvform = $gv->FORM; |
840 | if ($$gvform) { | |
cfa4c8ee | 841 | $gvform->save; |
a798dbf2 MB |
842 | $init->add(sprintf("GvFORM($sym) = (CV*)s\\_%x;", $$gvform)); |
843 | # warn "GV::save GvFORM(*$name)\n"; # debug | |
a798dbf2 MB |
844 | } |
845 | my $gvio = $gv->IO; | |
846 | if ($$gvio) { | |
cfa4c8ee | 847 | $gvio->save; |
a798dbf2 MB |
848 | $init->add(sprintf("GvIOp($sym) = s\\_%x;", $$gvio)); |
849 | # warn "GV::save GvIO(*$name)\n"; # debug | |
a798dbf2 MB |
850 | } |
851 | } | |
852 | return $sym; | |
853 | } | |
854 | sub B::AV::save { | |
855 | my ($av) = @_; | |
856 | my $sym = objsym($av); | |
857 | return $sym if defined $sym; | |
858 | my $avflags = $av->AvFLAGS; | |
859 | $xpvavsect->add(sprintf("0, -1, -1, 0, 0.0, 0, Nullhv, 0, 0, 0x%x", | |
860 | $avflags)); | |
861 | $svsect->add(sprintf("&xpvav_list[%d], %lu, 0x%x", | |
932e9ff9 | 862 | $xpvavsect->index, $av->REFCNT , $av->FLAGS)); |
a798dbf2 MB |
863 | my $sv_list_index = $svsect->index; |
864 | my $fill = $av->FILL; | |
865 | $av->save_magic; | |
866 | warn sprintf("saving AV 0x%x FILL=$fill AvFLAGS=0x%x", $$av, $avflags) | |
867 | if $debug_av; | |
868 | # XXX AVf_REAL is wrong test: need to save comppadlist but not stack | |
869 | #if ($fill > -1 && ($avflags & AVf_REAL)) { | |
870 | if ($fill > -1) { | |
871 | my @array = $av->ARRAY; | |
872 | if ($debug_av) { | |
873 | my $el; | |
874 | my $i = 0; | |
875 | foreach $el (@array) { | |
876 | warn sprintf("AV 0x%x[%d] = %s 0x%x\n", | |
877 | $$av, $i++, class($el), $$el); | |
878 | } | |
879 | } | |
880 | my @names = map($_->save, @array); | |
881 | # XXX Better ways to write loop? | |
882 | # Perhaps svp[0] = ...; svp[1] = ...; svp[2] = ...; | |
883 | # Perhaps I32 i = 0; svp[i++] = ...; svp[i++] = ...; svp[i++] = ...; | |
884 | $init->add("{", | |
885 | "\tSV **svp;", | |
886 | "\tAV *av = (AV*)&sv_list[$sv_list_index];", | |
887 | "\tav_extend(av, $fill);", | |
888 | "\tsvp = AvARRAY(av);", | |
889 | map("\t*svp++ = (SV*)$_;", @names), | |
890 | "\tAvFILLp(av) = $fill;", | |
891 | "}"); | |
892 | } else { | |
893 | my $max = $av->MAX; | |
894 | $init->add("av_extend((AV*)&sv_list[$sv_list_index], $max);") | |
895 | if $max > -1; | |
896 | } | |
897 | return savesym($av, "(AV*)&sv_list[$sv_list_index]"); | |
898 | } | |
899 | ||
900 | sub B::HV::save { | |
901 | my ($hv) = @_; | |
902 | my $sym = objsym($hv); | |
903 | return $sym if defined $sym; | |
904 | my $name = $hv->NAME; | |
905 | if ($name) { | |
906 | # It's a stash | |
907 | ||
908 | # A perl bug means HvPMROOT isn't altered when a PMOP is freed. Usually | |
909 | # the only symptom is that sv_reset tries to reset the PMf_USED flag of | |
910 | # a trashed op but we look at the trashed op_type and segfault. | |
911 | #my $adpmroot = ${$hv->PMROOT}; | |
912 | my $adpmroot = 0; | |
913 | $decl->add("static HV *hv$hv_index;"); | |
914 | # XXX Beware of weird package names containing double-quotes, \n, ...? | |
915 | $init->add(qq[hv$hv_index = gv_stashpv("$name", TRUE);]); | |
916 | if ($adpmroot) { | |
917 | $init->add(sprintf("HvPMROOT(hv$hv_index) = (PMOP*)s\\_%x;", | |
918 | $adpmroot)); | |
919 | } | |
920 | $sym = savesym($hv, "hv$hv_index"); | |
921 | $hv_index++; | |
922 | return $sym; | |
923 | } | |
924 | # It's just an ordinary HV | |
925 | $xpvhvsect->add(sprintf("0, 0, %d, 0, 0.0, 0, Nullhv, %d, 0, 0, 0", | |
926 | $hv->MAX, $hv->RITER)); | |
927 | $svsect->add(sprintf("&xpvhv_list[%d], %lu, 0x%x", | |
932e9ff9 | 928 | $xpvhvsect->index, $hv->REFCNT , $hv->FLAGS)); |
a798dbf2 MB |
929 | my $sv_list_index = $svsect->index; |
930 | my @contents = $hv->ARRAY; | |
931 | if (@contents) { | |
932 | my $i; | |
933 | for ($i = 1; $i < @contents; $i += 2) { | |
934 | $contents[$i] = $contents[$i]->save; | |
935 | } | |
936 | $init->add("{", "\tHV *hv = (HV*)&sv_list[$sv_list_index];"); | |
937 | while (@contents) { | |
938 | my ($key, $value) = splice(@contents, 0, 2); | |
939 | $init->add(sprintf("\thv_store(hv, %s, %u, %s, %s);", | |
940 | cstring($key),length($key),$value, hash($key))); | |
cf86991c NIS |
941 | # $init->add(sprintf("\thv_store(hv, %s, %u, %s, %s);", |
942 | # cstring($key),length($key),$value, 0)); | |
a798dbf2 MB |
943 | } |
944 | $init->add("}"); | |
945 | } | |
56eca212 | 946 | $hv->save_magic(); |
a798dbf2 MB |
947 | return savesym($hv, "(HV*)&sv_list[$sv_list_index]"); |
948 | } | |
949 | ||
950 | sub B::IO::save { | |
951 | my ($io) = @_; | |
952 | my $sym = objsym($io); | |
953 | return $sym if defined $sym; | |
954 | my $pv = $io->PV; | |
66a2622e | 955 | $pv = '' unless defined $pv; |
a798dbf2 MB |
956 | my $len = length($pv); |
957 | $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", | |
958 | $len, $len+1, $io->IVX, $io->NVX, $io->LINES, | |
959 | $io->PAGE, $io->PAGE_LEN, $io->LINES_LEFT, | |
960 | cstring($io->TOP_NAME), cstring($io->FMT_NAME), | |
961 | cstring($io->BOTTOM_NAME), $io->SUBPROCESS, | |
962 | cchar($io->IoTYPE), $io->IoFLAGS)); | |
963 | $svsect->add(sprintf("&xpvio_list[%d], %lu, 0x%x", | |
932e9ff9 | 964 | $xpviosect->index, $io->REFCNT , $io->FLAGS)); |
a798dbf2 MB |
965 | $sym = savesym($io, sprintf("(IO*)&sv_list[%d]", $svsect->index)); |
966 | my ($field, $fsym); | |
967 | foreach $field (qw(TOP_GV FMT_GV BOTTOM_GV)) { | |
968 | $fsym = $io->$field(); | |
969 | if ($$fsym) { | |
970 | $init->add(sprintf("Io$field($sym) = (GV*)s\\_%x;", $$fsym)); | |
971 | $fsym->save; | |
972 | } | |
973 | } | |
974 | $io->save_magic; | |
975 | return $sym; | |
976 | } | |
977 | ||
978 | sub B::SV::save { | |
979 | my $sv = shift; | |
980 | # This is where we catch an honest-to-goodness Nullsv (which gets | |
981 | # blessed into B::SV explicitly) and any stray erroneous SVs. | |
982 | return 0 unless $$sv; | |
983 | confess sprintf("cannot save that type of SV: %s (0x%x)\n", | |
984 | class($sv), $$sv); | |
985 | } | |
986 | ||
987 | sub output_all { | |
988 | my $init_name = shift; | |
989 | my $section; | |
990 | my @sections = ($opsect, $unopsect, $binopsect, $logopsect, $condopsect, | |
7934575e | 991 | $listopsect, $pmopsect, $svopsect, $padopsect, $pvopsect, |
66a2622e | 992 | $loopsect, $copsect, $svsect, $xpvsect, |
a798dbf2 MB |
993 | $xpvavsect, $xpvhvsect, $xpvcvsect, $xpvivsect, $xpvnvsect, |
994 | $xpvmgsect, $xpvlvsect, $xrvsect, $xpvbmsect, $xpviosect); | |
995 | $symsect->output(\*STDOUT, "#define %s\n"); | |
996 | print "\n"; | |
997 | output_declarations(); | |
998 | foreach $section (@sections) { | |
999 | my $lines = $section->index + 1; | |
1000 | if ($lines) { | |
1001 | my $name = $section->name; | |
1002 | my $typename = ($name eq "xpvcv") ? "XPVCV_or_similar" : uc($name); | |
1003 | print "Static $typename ${name}_list[$lines];\n"; | |
1004 | } | |
1005 | } | |
1006 | $decl->output(\*STDOUT, "%s\n"); | |
1007 | print "\n"; | |
1008 | foreach $section (@sections) { | |
1009 | my $lines = $section->index + 1; | |
1010 | if ($lines) { | |
1011 | my $name = $section->name; | |
1012 | my $typename = ($name eq "xpvcv") ? "XPVCV_or_similar" : uc($name); | |
1013 | printf "static %s %s_list[%u] = {\n", $typename, $name, $lines; | |
1014 | $section->output(\*STDOUT, "\t{ %s },\n"); | |
1015 | print "};\n\n"; | |
1016 | } | |
1017 | } | |
1018 | ||
1019 | print <<"EOT"; | |
1020 | static int $init_name() | |
1021 | { | |
af765ed9 VB |
1022 | dTARG; |
1023 | djSP; | |
a798dbf2 MB |
1024 | EOT |
1025 | $init->output(\*STDOUT, "\t%s\n"); | |
1026 | print "\treturn 0;\n}\n"; | |
1027 | if ($verbose) { | |
1028 | warn compile_stats(); | |
1029 | warn "NULLOP count: $nullop_count\n"; | |
1030 | } | |
1031 | } | |
1032 | ||
1033 | sub output_declarations { | |
1034 | print <<'EOT'; | |
1035 | #ifdef BROKEN_STATIC_REDECL | |
1036 | #define Static extern | |
1037 | #else | |
1038 | #define Static static | |
1039 | #endif /* BROKEN_STATIC_REDECL */ | |
1040 | ||
1041 | #ifdef BROKEN_UNION_INIT | |
1042 | /* | |
1043 | * Cribbed from cv.h with ANY (a union) replaced by void*. | |
1044 | * Some pre-Standard compilers can't cope with initialising unions. Ho hum. | |
1045 | */ | |
1046 | typedef struct { | |
1047 | char * xpv_pv; /* pointer to malloced string */ | |
1048 | STRLEN xpv_cur; /* length of xp_pv as a C string */ | |
1049 | STRLEN xpv_len; /* allocated size */ | |
1050 | IV xof_off; /* integer value */ | |
1051 | double xnv_nv; /* numeric value, if any */ | |
1052 | MAGIC* xmg_magic; /* magic for scalar array */ | |
1053 | HV* xmg_stash; /* class package */ | |
1054 | ||
1055 | HV * xcv_stash; | |
1056 | OP * xcv_start; | |
1057 | OP * xcv_root; | |
20ce7b12 | 1058 | void (*xcv_xsub) (CV*); |
a798dbf2 MB |
1059 | void * xcv_xsubany; |
1060 | GV * xcv_gv; | |
57843af0 | 1061 | char * xcv_file; |
b195d487 | 1062 | long xcv_depth; /* >= 2 indicates recursive call */ |
a798dbf2 MB |
1063 | AV * xcv_padlist; |
1064 | CV * xcv_outside; | |
1065 | #ifdef USE_THREADS | |
1066 | perl_mutex *xcv_mutexp; | |
1067 | struct perl_thread *xcv_owner; /* current owner thread */ | |
1068 | #endif /* USE_THREADS */ | |
fc290457 | 1069 | cv_flags_t xcv_flags; |
a798dbf2 MB |
1070 | } XPVCV_or_similar; |
1071 | #define ANYINIT(i) i | |
1072 | #else | |
1073 | #define XPVCV_or_similar XPVCV | |
1074 | #define ANYINIT(i) {i} | |
1075 | #endif /* BROKEN_UNION_INIT */ | |
1076 | #define Nullany ANYINIT(0) | |
1077 | ||
1078 | #define UNUSED 0 | |
1079 | #define sym_0 0 | |
1080 | ||
1081 | EOT | |
1082 | print "static GV *gv_list[$gv_index];\n" if $gv_index; | |
1083 | print "\n"; | |
1084 | } | |
1085 | ||
1086 | ||
1087 | sub output_boilerplate { | |
1088 | print <<'EOT'; | |
1089 | #include "EXTERN.h" | |
1090 | #include "perl.h" | |
93865851 | 1091 | #include "XSUB.h" |
a798dbf2 MB |
1092 | |
1093 | /* Workaround for mapstart: the only op which needs a different ppaddr */ | |
3f872cb9 GS |
1094 | #undef Perl_pp_mapstart |
1095 | #define Perl_pp_mapstart Perl_pp_grepstart | |
511dd457 | 1096 | #define XS_DynaLoader_boot_DynaLoader boot_DynaLoader |
5712119f | 1097 | EXTERN_C void boot_DynaLoader (pTHX_ CV* cv); |
a798dbf2 | 1098 | |
5712119f GS |
1099 | static void xs_init (pTHX); |
1100 | static void dl_init (pTHX); | |
a798dbf2 MB |
1101 | static PerlInterpreter *my_perl; |
1102 | EOT | |
1103 | } | |
1104 | ||
1105 | sub output_main { | |
1106 | print <<'EOT'; | |
1107 | int | |
a798dbf2 | 1108 | main(int argc, char **argv, char **env) |
a798dbf2 MB |
1109 | { |
1110 | int exitstatus; | |
1111 | int i; | |
1112 | char **fakeargv; | |
1113 | ||
5712119f | 1114 | PERL_SYS_INIT3(&argc,&argv,&env); |
a798dbf2 | 1115 | |
81009501 | 1116 | if (!PL_do_undump) { |
a798dbf2 MB |
1117 | my_perl = perl_alloc(); |
1118 | if (!my_perl) | |
1119 | exit(1); | |
1120 | perl_construct( my_perl ); | |
5712119f | 1121 | PL_perl_destruct_level = 0; |
a798dbf2 MB |
1122 | } |
1123 | ||
1124 | #ifdef CSH | |
81009501 GS |
1125 | if (!PL_cshlen) |
1126 | PL_cshlen = strlen(PL_cshname); | |
a798dbf2 MB |
1127 | #endif |
1128 | ||
1129 | #ifdef ALLOW_PERL_OPTIONS | |
1130 | #define EXTRA_OPTIONS 2 | |
1131 | #else | |
1132 | #define EXTRA_OPTIONS 3 | |
1133 | #endif /* ALLOW_PERL_OPTIONS */ | |
1134 | New(666, fakeargv, argc + EXTRA_OPTIONS + 1, char *); | |
1135 | fakeargv[0] = argv[0]; | |
1136 | fakeargv[1] = "-e"; | |
1137 | fakeargv[2] = ""; | |
1138 | #ifndef ALLOW_PERL_OPTIONS | |
1139 | fakeargv[3] = "--"; | |
1140 | #endif /* ALLOW_PERL_OPTIONS */ | |
1141 | for (i = 1; i < argc; i++) | |
1142 | fakeargv[i + EXTRA_OPTIONS] = argv[i]; | |
1143 | fakeargv[argc + EXTRA_OPTIONS] = 0; | |
1144 | ||
1145 | exitstatus = perl_parse(my_perl, xs_init, argc + EXTRA_OPTIONS, | |
1146 | fakeargv, NULL); | |
1147 | if (exitstatus) | |
1148 | exit( exitstatus ); | |
1149 | ||
1150 | sv_setpv(GvSV(gv_fetchpv("0", TRUE, SVt_PV)), argv[0]); | |
81009501 GS |
1151 | PL_main_cv = PL_compcv; |
1152 | PL_compcv = 0; | |
a798dbf2 MB |
1153 | |
1154 | exitstatus = perl_init(); | |
1155 | if (exitstatus) | |
1156 | exit( exitstatus ); | |
5712119f | 1157 | dl_init(aTHX); |
a798dbf2 MB |
1158 | |
1159 | exitstatus = perl_run( my_perl ); | |
1160 | ||
1161 | perl_destruct( my_perl ); | |
1162 | perl_free( my_perl ); | |
1163 | ||
5712119f GS |
1164 | PERL_SYS_TERM(); |
1165 | ||
a798dbf2 MB |
1166 | exit( exitstatus ); |
1167 | } | |
1168 | ||
511dd457 | 1169 | /* yanked from perl.c */ |
a798dbf2 | 1170 | static void |
5712119f | 1171 | xs_init(pTHX) |
a798dbf2 | 1172 | { |
511dd457 | 1173 | char *file = __FILE__; |
af765ed9 VB |
1174 | dTARG; |
1175 | djSP; | |
a798dbf2 | 1176 | EOT |
af765ed9 VB |
1177 | print "\n#ifdef USE_DYNAMIC_LOADING"; |
1178 | print qq/\n\tnewXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, file);/; | |
1179 | print "\n#endif\n" ; | |
a0e9c8c7 | 1180 | # delete $xsub{'DynaLoader'}; |
af765ed9 | 1181 | delete $xsub{'UNIVERSAL'}; |
be6f3502 | 1182 | print("/* bootstrapping code*/\n\tSAVETMPS;\n"); |
af765ed9 | 1183 | print("\ttarg=sv_newmortal();\n"); |
a0e9c8c7 NIS |
1184 | print "#ifdef DYNALOADER_BOOTSTRAP\n"; |
1185 | print "\tPUSHMARK(sp);\n"; | |
1186 | print qq/\tXPUSHp("DynaLoader",strlen("DynaLoader"));\n/; | |
1187 | print qq/\tPUTBACK;\n/; | |
5712119f | 1188 | print "\tboot_DynaLoader(aTHX_ NULL);\n"; |
a0e9c8c7 NIS |
1189 | print qq/\tSPAGAIN;\n/; |
1190 | print "#endif\n"; | |
1191 | foreach my $stashname (keys %xsub){ | |
be6f3502 NIS |
1192 | if ($xsub{$stashname} ne 'Dynamic') { |
1193 | my $stashxsub=$stashname; | |
1194 | $stashxsub =~ s/::/__/g; | |
1195 | print "\tPUSHMARK(sp);\n"; | |
a0e9c8c7 NIS |
1196 | print qq/\tXPUSHp("$stashname",strlen("$stashname"));\n/; |
1197 | print qq/\tPUTBACK;\n/; | |
5712119f | 1198 | print "\tboot_$stashxsub(aTHX_ NULL);\n"; |
a0e9c8c7 | 1199 | print qq/\tSPAGAIN;\n/; |
be6f3502 NIS |
1200 | } |
1201 | } | |
1202 | print("\tFREETMPS;\n/* end bootstrapping code */\n"); | |
a0e9c8c7 | 1203 | print "}\n"; |
be6f3502 NIS |
1204 | |
1205 | print <<'EOT'; | |
1206 | static void | |
5712119f | 1207 | dl_init(pTHX) |
be6f3502 NIS |
1208 | { |
1209 | char *file = __FILE__; | |
1210 | dTARG; | |
1211 | djSP; | |
1212 | EOT | |
1213 | print("/* Dynamicboot strapping code*/\n\tSAVETMPS;\n"); | |
1214 | print("\ttarg=sv_newmortal();\n"); | |
1215 | foreach my $stashname (@DynaLoader::dl_modules) { | |
1216 | warn "Loaded $stashname\n"; | |
1217 | if (exists($xsub{$stashname}) && $xsub{$stashname} eq 'Dynamic') { | |
1218 | my $stashxsub=$stashname; | |
1219 | $stashxsub =~ s/::/__/g; | |
1220 | print "\tPUSHMARK(sp);\n"; | |
a0e9c8c7 | 1221 | print qq/\tXPUSHp("$stashname",/,length($stashname),qq/);\n/; |
be6f3502 | 1222 | print qq/\tPUTBACK;\n/; |
af765ed9 VB |
1223 | print "#ifdef DYNALOADER_BOOTSTRAP\n"; |
1224 | warn "bootstrapping $stashname added to xs_init\n"; | |
be6f3502 | 1225 | print qq/\tperl_call_method("bootstrap",G_DISCARD);\n/; |
af765ed9 | 1226 | print "\n#else\n"; |
5712119f | 1227 | print "\tboot_$stashxsub(aTHX_ NULL);\n"; |
be6f3502 NIS |
1228 | print "#endif\n"; |
1229 | print qq/\tSPAGAIN;\n/; | |
1230 | } | |
af765ed9 | 1231 | } |
be6f3502 | 1232 | print("\tFREETMPS;\n/* end Dynamic bootstrapping code */\n"); |
a0e9c8c7 | 1233 | print "}\n"; |
af765ed9 | 1234 | } |
a798dbf2 MB |
1235 | sub dump_symtable { |
1236 | # For debugging | |
1237 | my ($sym, $val); | |
1238 | warn "----Symbol table:\n"; | |
1239 | while (($sym, $val) = each %symtable) { | |
1240 | warn "$sym => $val\n"; | |
1241 | } | |
1242 | warn "---End of symbol table\n"; | |
1243 | } | |
1244 | ||
1245 | sub save_object { | |
1246 | my $sv; | |
1247 | foreach $sv (@_) { | |
1248 | svref_2object($sv)->save; | |
1249 | } | |
338a6d08 NIS |
1250 | } |
1251 | ||
1252 | sub Dummy_BootStrap { } | |
a798dbf2 | 1253 | |
66a2622e NIS |
1254 | sub B::GV::savecv |
1255 | { | |
1256 | my $gv = shift; | |
1257 | my $package=$gv->STASH->NAME; | |
1258 | my $name = $gv->NAME; | |
1259 | my $cv = $gv->CV; | |
7cf11ee8 NIS |
1260 | my $sv = $gv->SV; |
1261 | my $av = $gv->AV; | |
1262 | my $hv = $gv->HV; | |
7cf11ee8 | 1263 | |
66a2622e NIS |
1264 | # We may be looking at this package just because it is a branch in the |
1265 | # symbol table which is on the path to a package which we need to save | |
7cf11ee8 | 1266 | # e.g. this is 'Getopt' and we need to save 'Getopt::Long' |
66a2622e | 1267 | # |
7cf11ee8 | 1268 | return unless ($unused_sub_packages{$package}); |
be6f3502 NIS |
1269 | return unless ($$cv || $$av || $$sv || $$hv); |
1270 | $gv->save; | |
66a2622e | 1271 | } |
5ed82aed | 1272 | |
66a2622e NIS |
1273 | sub mark_package |
1274 | { | |
1275 | my $package = shift; | |
1276 | unless ($unused_sub_packages{$package}) | |
1277 | { | |
1278 | no strict 'refs'; | |
1279 | $unused_sub_packages{$package} = 1; | |
6771324e | 1280 | if (defined @{$package.'::ISA'}) |
66a2622e NIS |
1281 | { |
1282 | foreach my $isa (@{$package.'::ISA'}) | |
1283 | { | |
1284 | if ($isa eq 'DynaLoader') | |
1285 | { | |
1286 | unless (defined(&{$package.'::bootstrap'})) | |
1287 | { | |
1288 | warn "Forcing bootstrap of $package\n"; | |
1289 | eval { $package->bootstrap }; | |
1290 | } | |
1291 | } | |
a0e9c8c7 | 1292 | # else |
66a2622e NIS |
1293 | { |
1294 | unless ($unused_sub_packages{$isa}) | |
1295 | { | |
1296 | warn "$isa saved (it is in $package\'s \@ISA)\n"; | |
1297 | mark_package($isa); | |
1298 | } | |
1299 | } | |
1300 | } | |
1301 | } | |
1302 | } | |
1303 | return 1; | |
1304 | } | |
1305 | ||
1306 | sub should_save | |
1307 | { | |
1308 | no strict qw(vars refs); | |
1309 | my $package = shift; | |
1310 | $package =~ s/::$//; | |
1311 | return $unused_sub_packages{$package} = 0 if ($package =~ /::::/); # skip ::::ISA::CACHE etc. | |
cf86991c | 1312 | # warn "Considering $package\n";#debug |
66a2622e NIS |
1313 | foreach my $u (grep($unused_sub_packages{$_},keys %unused_sub_packages)) |
1314 | { | |
1315 | # If this package is a prefix to something we are saving, traverse it | |
1316 | # but do not mark it for saving if it is not already | |
1317 | # e.g. to get to Getopt::Long we need to traverse Getopt but need | |
1318 | # not save Getopt | |
1319 | return 1 if ($u =~ /^$package\:\:/); | |
1320 | } | |
1321 | if (exists $unused_sub_packages{$package}) | |
1322 | { | |
cf86991c | 1323 | # warn "Cached $package is ".$unused_sub_packages{$package}."\n"; |
cfa4c8ee VB |
1324 | delete_unsaved_hashINC($package) unless $unused_sub_packages{$package} ; |
1325 | return $unused_sub_packages{$package}; | |
66a2622e NIS |
1326 | } |
1327 | # Omit the packages which we use (and which cause grief | |
1328 | # because of fancy "goto &$AUTOLOAD" stuff). | |
1329 | # XXX Surely there must be a nicer way to do this. | |
1330 | if ($package eq "FileHandle" || $package eq "Config" || | |
cf86991c | 1331 | $package eq "SelectSaver" || $package =~/^(B|IO)::/) |
66a2622e | 1332 | { |
cfa4c8ee | 1333 | delete_unsaved_hashINC($package); |
66a2622e NIS |
1334 | return $unused_sub_packages{$package} = 0; |
1335 | } | |
1336 | # Now see if current package looks like an OO class this is probably too strong. | |
1337 | foreach my $m (qw(new DESTROY TIESCALAR TIEARRAY TIEHASH TIEHANDLE)) | |
1338 | { | |
0e06870b | 1339 | if (UNIVERSAL::can($package, $m)) |
66a2622e NIS |
1340 | { |
1341 | warn "$package has method $m: saving package\n";#debug | |
1342 | return mark_package($package); | |
1343 | } | |
1344 | } | |
cfa4c8ee | 1345 | delete_unsaved_hashINC($package); |
66a2622e | 1346 | return $unused_sub_packages{$package} = 0; |
a798dbf2 | 1347 | } |
cfa4c8ee VB |
1348 | sub delete_unsaved_hashINC{ |
1349 | my $packname=shift; | |
1350 | $packname =~ s/\:\:/\//g; | |
1351 | $packname .= '.pm'; | |
59c10aa2 | 1352 | # warn "deleting $packname" if $INC{$packname} ;# debug |
cfa4c8ee VB |
1353 | delete $INC{$packname}; |
1354 | } | |
66a2622e NIS |
1355 | sub walkpackages |
1356 | { | |
1357 | my ($symref, $recurse, $prefix) = @_; | |
1358 | my $sym; | |
1359 | my $ref; | |
1360 | no strict 'vars'; | |
1361 | local(*glob); | |
1362 | $prefix = '' unless defined $prefix; | |
1363 | while (($sym, $ref) = each %$symref) | |
1364 | { | |
1365 | *glob = $ref; | |
1366 | if ($sym =~ /::$/) | |
1367 | { | |
1368 | $sym = $prefix . $sym; | |
0e06870b | 1369 | if ($sym ne "main::" && $sym ne "<none>::" && &$recurse($sym)) |
66a2622e NIS |
1370 | { |
1371 | walkpackages(\%glob, $recurse, $sym); | |
1372 | } | |
1373 | } | |
1374 | } | |
1375 | } | |
338a6d08 NIS |
1376 | |
1377 | ||
66a2622e NIS |
1378 | sub save_unused_subs |
1379 | { | |
1380 | no strict qw(refs); | |
a9b6343a | 1381 | &descend_marked_unused; |
66a2622e NIS |
1382 | warn "Prescan\n"; |
1383 | walkpackages(\%{"main::"}, sub { should_save($_[0]); return 1 }); | |
1384 | warn "Saving methods\n"; | |
1385 | walksymtable(\%{"main::"}, "savecv", \&should_save); | |
a798dbf2 MB |
1386 | } |
1387 | ||
0cc1d052 NIS |
1388 | sub save_context |
1389 | { | |
1390 | my $curpad_nam = (comppadlist->ARRAY)[0]->save; | |
1391 | my $curpad_sym = (comppadlist->ARRAY)[1]->save; | |
1392 | my $inc_hv = svref_2object(\%INC)->save; | |
1393 | my $inc_av = svref_2object(\@INC)->save; | |
56eca212 | 1394 | my $amagic_generate= amagic_generation; |
0cc1d052 NIS |
1395 | $init->add( "PL_curpad = AvARRAY($curpad_sym);", |
1396 | "GvHV(PL_incgv) = $inc_hv;", | |
1397 | "GvAV(PL_incgv) = $inc_av;", | |
1398 | "av_store(CvPADLIST(PL_main_cv),0,SvREFCNT_inc($curpad_nam));", | |
56eca212 GS |
1399 | "av_store(CvPADLIST(PL_main_cv),1,SvREFCNT_inc($curpad_sym));", |
1400 | "PL_amagic_generation= $amagic_generate;" ); | |
0cc1d052 NIS |
1401 | } |
1402 | ||
a9b6343a VB |
1403 | sub descend_marked_unused { |
1404 | foreach my $pack (keys %unused_sub_packages) | |
1405 | { | |
1406 | mark_package($pack); | |
1407 | } | |
1408 | } | |
73544139 | 1409 | |
a798dbf2 | 1410 | sub save_main { |
66a2622e | 1411 | warn "Starting compile\n"; |
66a2622e | 1412 | warn "Walking tree\n"; |
73544139 | 1413 | seek(STDOUT,0,0); #exclude print statements in BEGIN{} into output |
a798dbf2 MB |
1414 | walkoptree(main_root, "save"); |
1415 | warn "done main optree, walking symtable for extras\n" if $debug_cv; | |
66a2622e | 1416 | save_unused_subs(); |
0cc1d052 | 1417 | my $init_av = init_av->save; |
81009501 GS |
1418 | $init->add(sprintf("PL_main_root = s\\_%x;", ${main_root()}), |
1419 | sprintf("PL_main_start = s\\_%x;", ${main_start()}), | |
5ab5c7a4 | 1420 | "PL_initav = (AV *) $init_av;"); |
0cc1d052 | 1421 | save_context(); |
5ed82aed | 1422 | warn "Writing output\n"; |
a798dbf2 MB |
1423 | output_boilerplate(); |
1424 | print "\n"; | |
1425 | output_all("perl_init"); | |
1426 | print "\n"; | |
1427 | output_main(); | |
1428 | } | |
1429 | ||
1430 | sub init_sections { | |
1431 | my @sections = (init => \$init, decl => \$decl, sym => \$symsect, | |
1432 | binop => \$binopsect, condop => \$condopsect, | |
7934575e | 1433 | cop => \$copsect, padop => \$padopsect, |
a798dbf2 MB |
1434 | listop => \$listopsect, logop => \$logopsect, |
1435 | loop => \$loopsect, op => \$opsect, pmop => \$pmopsect, | |
1436 | pvop => \$pvopsect, svop => \$svopsect, unop => \$unopsect, | |
1437 | sv => \$svsect, xpv => \$xpvsect, xpvav => \$xpvavsect, | |
1438 | xpvhv => \$xpvhvsect, xpvcv => \$xpvcvsect, | |
1439 | xpviv => \$xpvivsect, xpvnv => \$xpvnvsect, | |
1440 | xpvmg => \$xpvmgsect, xpvlv => \$xpvlvsect, | |
1441 | xrv => \$xrvsect, xpvbm => \$xpvbmsect, | |
af765ed9 | 1442 | xpvio => \$xpviosect); |
a798dbf2 MB |
1443 | my ($name, $sectref); |
1444 | while (($name, $sectref) = splice(@sections, 0, 2)) { | |
66a2622e | 1445 | $$sectref = new B::C::Section $name, \%symtable, 0; |
a798dbf2 | 1446 | } |
0cc1d052 NIS |
1447 | } |
1448 | ||
1449 | sub mark_unused | |
1450 | { | |
1451 | my ($arg,$val) = @_; | |
1452 | $unused_sub_packages{$arg} = $val; | |
a798dbf2 MB |
1453 | } |
1454 | ||
1455 | sub compile { | |
1456 | my @options = @_; | |
1457 | my ($option, $opt, $arg); | |
1458 | OPTION: | |
1459 | while ($option = shift @options) { | |
1460 | if ($option =~ /^-(.)(.*)/) { | |
1461 | $opt = $1; | |
1462 | $arg = $2; | |
1463 | } else { | |
1464 | unshift @options, $option; | |
1465 | last OPTION; | |
1466 | } | |
1467 | if ($opt eq "-" && $arg eq "-") { | |
1468 | shift @options; | |
1469 | last OPTION; | |
1470 | } | |
1471 | if ($opt eq "w") { | |
1472 | $warn_undefined_syms = 1; | |
1473 | } elsif ($opt eq "D") { | |
1474 | $arg ||= shift @options; | |
1475 | foreach $arg (split(//, $arg)) { | |
1476 | if ($arg eq "o") { | |
1477 | B->debug(1); | |
1478 | } elsif ($arg eq "c") { | |
1479 | $debug_cops = 1; | |
1480 | } elsif ($arg eq "A") { | |
1481 | $debug_av = 1; | |
1482 | } elsif ($arg eq "C") { | |
1483 | $debug_cv = 1; | |
1484 | } elsif ($arg eq "M") { | |
1485 | $debug_mg = 1; | |
1486 | } else { | |
1487 | warn "ignoring unknown debug option: $arg\n"; | |
1488 | } | |
1489 | } | |
1490 | } elsif ($opt eq "o") { | |
1491 | $arg ||= shift @options; | |
1492 | open(STDOUT, ">$arg") or return "$arg: $!\n"; | |
1493 | } elsif ($opt eq "v") { | |
1494 | $verbose = 1; | |
1495 | } elsif ($opt eq "u") { | |
1496 | $arg ||= shift @options; | |
0cc1d052 | 1497 | mark_unused($arg,undef); |
a798dbf2 MB |
1498 | } elsif ($opt eq "f") { |
1499 | $arg ||= shift @options; | |
1500 | if ($arg eq "cog") { | |
1501 | $pv_copy_on_grow = 1; | |
1502 | } elsif ($arg eq "no-cog") { | |
1503 | $pv_copy_on_grow = 0; | |
1504 | } | |
1505 | } elsif ($opt eq "O") { | |
1506 | $arg = 1 if $arg eq ""; | |
1507 | $pv_copy_on_grow = 0; | |
1508 | if ($arg >= 1) { | |
1509 | # Optimisations for -O1 | |
1510 | $pv_copy_on_grow = 1; | |
1511 | } | |
dc333d64 GS |
1512 | } elsif ($opt eq "l") { |
1513 | $max_string_len = $arg; | |
a798dbf2 MB |
1514 | } |
1515 | } | |
1516 | init_sections(); | |
1517 | if (@options) { | |
1518 | return sub { | |
1519 | my $objname; | |
1520 | foreach $objname (@options) { | |
1521 | eval "save_object(\\$objname)"; | |
1522 | } | |
1523 | output_all(); | |
1524 | } | |
1525 | } else { | |
1526 | return sub { save_main() }; | |
1527 | } | |
1528 | } | |
1529 | ||
1530 | 1; | |
7f20e9dd GS |
1531 | |
1532 | __END__ | |
1533 | ||
1534 | =head1 NAME | |
1535 | ||
1536 | B::C - Perl compiler's C backend | |
1537 | ||
1538 | =head1 SYNOPSIS | |
1539 | ||
1540 | perl -MO=C[,OPTIONS] foo.pl | |
1541 | ||
1542 | =head1 DESCRIPTION | |
1543 | ||
1a52ab62 MB |
1544 | This compiler backend takes Perl source and generates C source code |
1545 | corresponding to the internal structures that perl uses to run | |
1546 | your program. When the generated C source is compiled and run, it | |
1547 | cuts out the time which perl would have taken to load and parse | |
1548 | your program into its internal semi-compiled form. That means that | |
1549 | compiling with this backend will not help improve the runtime | |
1550 | execution speed of your program but may improve the start-up time. | |
1551 | Depending on the environment in which your program runs this may be | |
1552 | either a help or a hindrance. | |
1553 | ||
1554 | =head1 OPTIONS | |
1555 | ||
1556 | If there are any non-option arguments, they are taken to be | |
1557 | names of objects to be saved (probably doesn't work properly yet). | |
1558 | Without extra arguments, it saves the main program. | |
1559 | ||
1560 | =over 4 | |
1561 | ||
1562 | =item B<-ofilename> | |
1563 | ||
1564 | Output to filename instead of STDOUT | |
1565 | ||
1566 | =item B<-v> | |
1567 | ||
1568 | Verbose compilation (currently gives a few compilation statistics). | |
1569 | ||
1570 | =item B<--> | |
1571 | ||
1572 | Force end of options | |
1573 | ||
1574 | =item B<-uPackname> | |
1575 | ||
1576 | Force apparently unused subs from package Packname to be compiled. | |
1577 | This allows programs to use eval "foo()" even when sub foo is never | |
1578 | seen to be used at compile time. The down side is that any subs which | |
1579 | really are never used also have code generated. This option is | |
1580 | necessary, for example, if you have a signal handler foo which you | |
1581 | initialise with C<$SIG{BAR} = "foo">. A better fix, though, is just | |
1582 | to change it to C<$SIG{BAR} = \&foo>. You can have multiple B<-u> | |
1583 | options. The compiler tries to figure out which packages may possibly | |
1584 | have subs in which need compiling but the current version doesn't do | |
1585 | it very well. In particular, it is confused by nested packages (i.e. | |
1586 | of the form C<A::B>) where package C<A> does not contain any subs. | |
1587 | ||
1588 | =item B<-D> | |
1589 | ||
1590 | Debug options (concatenated or separate flags like C<perl -D>). | |
1591 | ||
1592 | =item B<-Do> | |
1593 | ||
1594 | OPs, prints each OP as it's processed | |
1595 | ||
1596 | =item B<-Dc> | |
1597 | ||
1598 | COPs, prints COPs as processed (incl. file & line num) | |
1599 | ||
1600 | =item B<-DA> | |
1601 | ||
1602 | prints AV information on saving | |
1603 | ||
1604 | =item B<-DC> | |
1605 | ||
1606 | prints CV information on saving | |
1607 | ||
1608 | =item B<-DM> | |
1609 | ||
1610 | prints MAGIC information on saving | |
1611 | ||
1612 | =item B<-f> | |
1613 | ||
1614 | Force optimisations on or off one at a time. | |
1615 | ||
1616 | =item B<-fcog> | |
1617 | ||
1618 | Copy-on-grow: PVs declared and initialised statically. | |
1619 | ||
1620 | =item B<-fno-cog> | |
1621 | ||
1622 | No copy-on-grow. | |
1623 | ||
1624 | =item B<-On> | |
1625 | ||
1626 | Optimisation level (n = 0, 1, 2, ...). B<-O> means B<-O1>. Currently, | |
1627 | B<-O1> and higher set B<-fcog>. | |
1628 | ||
dc333d64 GS |
1629 | =item B<-llimit> |
1630 | ||
1631 | Some C compilers impose an arbitrary limit on the length of string | |
1632 | constants (e.g. 2048 characters for Microsoft Visual C++). The | |
1633 | B<-llimit> options tells the C backend not to generate string literals | |
1634 | exceeding that limit. | |
1635 | ||
a45bd81d GS |
1636 | =back |
1637 | ||
1a52ab62 MB |
1638 | =head1 EXAMPLES |
1639 | ||
1640 | perl -MO=C,-ofoo.c foo.pl | |
1641 | perl cc_harness -o foo foo.c | |
1642 | ||
1643 | Note that C<cc_harness> lives in the C<B> subdirectory of your perl | |
1644 | library directory. The utility called C<perlcc> may also be used to | |
1645 | help make use of this compiler. | |
1646 | ||
dc333d64 | 1647 | perl -MO=C,-v,-DcA,-l2048 bar.pl > /dev/null |
1a52ab62 MB |
1648 | |
1649 | =head1 BUGS | |
1650 | ||
1651 | Plenty. Current status: experimental. | |
7f20e9dd GS |
1652 | |
1653 | =head1 AUTHOR | |
1654 | ||
1655 | Malcolm Beattie, C<mbeattie@sable.ox.ac.uk> | |
1656 | ||
1657 | =cut |