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1df34986 AE |
1 | # B::Bytecode.pm |
2 | # Copyright (c) 2003 Enache Adrian. All rights reserved. | |
3 | # This module is free software; you can redistribute and/or modify | |
4 | # it under the same terms as Perl itself. | |
5 | ||
6 | # Based on the original Bytecode.pm module written by Malcolm Beattie. | |
059a8bb7 | 7 | |
1df34986 | 8 | package B::Bytecode; |
28b605d8 | 9 | |
a798dbf2 | 10 | use strict; |
1df34986 AE |
11 | use Config; |
12 | use B qw(class main_cv main_root main_start cstring comppadlist | |
13 | defstash curstash begin_av init_av end_av inc_gv warnhook diehook | |
14 | dowarn SVt_PVGV SVt_PVHV OPf_SPECIAL OPf_STACKED OPf_MOD | |
15 | OPpLVAL_INTRO SVf_FAKE SVf_READONLY); | |
16 | use B::Asmdata qw(@specialsv_name); | |
17 | use B::Assembler qw(asm newasm endasm); | |
18 | no warnings; # XXX | |
19 | ||
20 | ################################################# | |
21 | ||
22 | my $ithreads = $Config{'useithreads'} eq 'define'; | |
23 | my ($varix, $opix, $savebegins); | |
24 | my %strtab = (0,0); | |
25 | my %svtab = (0,0); | |
26 | my %optab = (0,0); | |
27 | my %spectab = (0,0); | |
28 | my %walked; | |
29 | my @cloop; | |
30 | my $tix = 1; | |
31 | sub asm; | |
32 | sub nice ($) { } | |
33 | my %files; | |
34 | ||
35 | ################################################# | |
059a8bb7 | 36 | |
1df34986 AE |
37 | sub pvstring { |
38 | my $pv = shift; | |
39 | defined($pv) ? cstring ($pv."\0") : "\"\""; | |
059a8bb7 | 40 | } |
a798dbf2 | 41 | |
1df34986 AE |
42 | sub pvix { |
43 | my $str = pvstring shift; | |
44 | my $ix = $strtab{$str}; | |
45 | defined($ix) ? $ix : do { | |
46 | asm "newpv", $str; | |
47 | asm "stpv", $strtab{$str} = $tix; | |
48 | $tix++; | |
a798dbf2 MB |
49 | } |
50 | } | |
51 | ||
1df34986 AE |
52 | sub B::OP::ix { |
53 | my $op = shift; | |
54 | my $ix = $optab{$$op}; | |
55 | defined($ix) ? $ix : do { | |
56 | nice '['.$op->name.']'; | |
566ece03 JH |
57 | asm "newopx", $op->size | $op->type <<7; |
58 | $optab{$$op} = $opix = $ix = $tix++; | |
1df34986 AE |
59 | $op->bsave($ix); |
60 | $ix; | |
a798dbf2 MB |
61 | } |
62 | } | |
63 | ||
1df34986 AE |
64 | sub B::SPECIAL::ix { |
65 | my $spec = shift; | |
66 | my $ix = $spectab{$$spec}; | |
67 | defined($ix) ? $ix : do { | |
68 | nice '['.$specialsv_name[$$spec].']'; | |
566ece03 JH |
69 | asm "ldspecsvx", $$spec; |
70 | $spectab{$$spec} = $varix = $tix++; | |
1df34986 | 71 | } |
a798dbf2 MB |
72 | } |
73 | ||
1df34986 AE |
74 | sub B::SV::ix { |
75 | my $sv = shift; | |
76 | my $ix = $svtab{$$sv}; | |
77 | defined($ix) ? $ix : do { | |
78 | nice '['.class($sv).']'; | |
566ece03 JH |
79 | asm "newsvx", $sv->FLAGS; |
80 | $svtab{$$sv} = $varix = $ix = $tix++; | |
1df34986 AE |
81 | $sv->bsave($ix); |
82 | $ix; | |
83 | } | |
84 | } | |
85 | ||
86 | sub B::GV::ix { | |
87 | my ($gv,$desired) = @_; | |
88 | my $ix = $svtab{$$gv}; | |
89 | defined($ix) ? $ix : do { | |
90 | if ($gv->GP) { | |
91 | my ($svix, $avix, $hvix, $cvix, $ioix, $formix); | |
92 | nice "[GV]"; | |
93 | my $name = $gv->STASH->NAME . "::" . $gv->NAME; | |
566ece03 JH |
94 | asm "gv_fetchpvx", cstring $name; |
95 | $svtab{$$gv} = $varix = $ix = $tix++; | |
1df34986 AE |
96 | asm "sv_flags", $gv->FLAGS; |
97 | asm "sv_refcnt", $gv->REFCNT; | |
98 | asm "xgv_flags", $gv->GvFLAGS; | |
99 | ||
100 | asm "gp_refcnt", $gv->GvREFCNT; | |
101 | asm "load_glob", $ix if $name eq "CORE::GLOBAL::glob"; | |
102 | return $ix | |
103 | unless $desired || desired $gv; | |
104 | $svix = $gv->SV->ix; | |
105 | $avix = $gv->AV->ix; | |
106 | $hvix = $gv->HV->ix; | |
107 | ||
566ece03 | 108 | # XXX {{{{ |
1df34986 AE |
109 | my $cv = $gv->CV; |
110 | $cvix = $$cv && defined $files{$cv->FILE} ? $cv->ix : 0; | |
111 | my $form = $gv->FORM; | |
112 | $formix = $$form && defined $files{$form->FILE} ? $form->ix : 0; | |
113 | ||
566ece03 JH |
114 | $ioix = $name !~ /STDOUT$/ ? $gv->IO->ix : 0; |
115 | # }}}} XXX | |
1df34986 AE |
116 | |
117 | nice "-GV-", | |
118 | asm "ldsv", $varix = $ix unless $ix == $varix; | |
119 | asm "gp_sv", $svix; | |
120 | asm "gp_av", $avix; | |
121 | asm "gp_hv", $hvix; | |
122 | asm "gp_cv", $cvix; | |
123 | asm "gp_io", $ioix; | |
124 | asm "gp_cvgen", $gv->CVGEN; | |
125 | asm "gp_form", $formix; | |
126 | asm "gp_file", pvix $gv->FILE; | |
127 | asm "gp_line", $gv->LINE; | |
128 | asm "formfeed", $svix if $name eq "main::\cL"; | |
129 | } else { | |
130 | nice "[GV]"; | |
566ece03 JH |
131 | asm "newsvx", $gv->FLAGS; |
132 | $svtab{$$gv} = $varix = $ix = $tix++; | |
1df34986 AE |
133 | my $stashix = $gv->STASH->ix; |
134 | $gv->B::PVMG::bsave($ix); | |
135 | asm "xgv_flags", $gv->GvFLAGS; | |
136 | asm "xgv_stash", $stashix; | |
137 | } | |
138 | $ix; | |
139 | } | |
a798dbf2 MB |
140 | } |
141 | ||
1df34986 AE |
142 | sub B::HV::ix { |
143 | my $hv = shift; | |
144 | my $ix = $svtab{$$hv}; | |
145 | defined($ix) ? $ix : do { | |
146 | my ($ix,$i,@array); | |
147 | my $name = $hv->NAME; | |
148 | if ($name) { | |
149 | nice "[STASH]"; | |
566ece03 JH |
150 | asm "gv_stashpvx", cstring $name; |
151 | asm "sv_flags", $hv->FLAGS; | |
152 | $svtab{$$hv} = $varix = $ix = $tix++; | |
1df34986 AE |
153 | asm "xhv_name", pvix $name; |
154 | # my $pmrootix = $hv->PMROOT->ix; # XXX | |
155 | asm "ldsv", $varix = $ix unless $ix == $varix; | |
156 | # asm "xhv_pmroot", $pmrootix; # XXX | |
157 | } else { | |
158 | nice "[HV]"; | |
566ece03 JH |
159 | asm "newsvx", $hv->FLAGS; |
160 | $svtab{$$hv} = $varix = $ix = $tix++; | |
1df34986 AE |
161 | my $stashix = $hv->SvSTASH->ix; |
162 | for (@array = $hv->ARRAY) { | |
163 | next if $i = not $i; | |
164 | $_ = $_->ix; | |
165 | } | |
166 | nice "-HV-", | |
167 | asm "ldsv", $varix = $ix unless $ix == $varix; | |
168 | ($i = not $i) ? asm ("newpv", pvstring $_) : asm("hv_store", $_) | |
169 | for @array; | |
170 | asm "xnv", $hv->NVX; | |
171 | asm "xmg_stash", $stashix; | |
172 | } | |
173 | asm "sv_refcnt", $hv->REFCNT; | |
1df34986 | 174 | $ix; |
a798dbf2 MB |
175 | } |
176 | } | |
177 | ||
1df34986 AE |
178 | sub B::NULL::ix { |
179 | my $sv = shift; | |
180 | $$sv ? $sv->B::SV::ix : 0; | |
059a8bb7 JH |
181 | } |
182 | ||
1df34986 | 183 | sub B::NULL::opwalk { 0 } |
a798dbf2 | 184 | |
1df34986 | 185 | ################################################# |
a798dbf2 | 186 | |
1df34986 AE |
187 | sub B::NULL::bsave { |
188 | my ($sv,$ix) = @_; | |
059a8bb7 | 189 | |
1df34986 AE |
190 | nice '-'.class($sv).'-', |
191 | asm "ldsv", $varix = $ix unless $ix == $varix; | |
192 | asm "sv_refcnt", $sv->REFCNT; | |
a798dbf2 MB |
193 | } |
194 | ||
1df34986 AE |
195 | sub B::SV::bsave; |
196 | *B::SV::bsave = *B::NULL::bsave; | |
a798dbf2 | 197 | |
1df34986 AE |
198 | sub B::RV::bsave { |
199 | my ($sv,$ix) = @_; | |
200 | my $rvix = $sv->RV->ix; | |
201 | $sv->B::NULL::bsave($ix); | |
202 | asm "xrv", $rvix; | |
a798dbf2 MB |
203 | } |
204 | ||
1df34986 AE |
205 | sub B::PV::bsave { |
206 | my ($sv,$ix) = @_; | |
207 | $sv->B::NULL::bsave($ix); | |
208 | asm "newpv", pvstring $sv->PVBM; | |
209 | asm "xpv"; | |
a798dbf2 MB |
210 | } |
211 | ||
1df34986 AE |
212 | sub B::IV::bsave { |
213 | my ($sv,$ix) = @_; | |
214 | $sv->B::NULL::bsave($ix); | |
215 | asm "xiv", $sv->IVX; | |
a798dbf2 MB |
216 | } |
217 | ||
1df34986 AE |
218 | sub B::NV::bsave { |
219 | my ($sv,$ix) = @_; | |
220 | $sv->B::NULL::bsave($ix); | |
221 | asm "xnv", sprintf "%.40g", $sv->NVX; | |
a798dbf2 MB |
222 | } |
223 | ||
1df34986 AE |
224 | sub B::PVIV::bsave { |
225 | my ($sv,$ix) = @_; | |
226 | $sv->POK ? | |
227 | $sv->B::PV::bsave($ix): | |
228 | $sv->ROK ? | |
229 | $sv->B::RV::bsave($ix): | |
230 | $sv->B::NULL::bsave($ix); | |
231 | asm "xiv", !$ithreads && $sv->FLAGS & (SVf_FAKE|SVf_READONLY) ? | |
232 | "0 but true" : $sv->IVX; | |
a798dbf2 MB |
233 | } |
234 | ||
1df34986 AE |
235 | sub B::PVNV::bsave { |
236 | my ($sv,$ix) = @_; | |
237 | $sv->B::PVIV::bsave($ix); | |
238 | asm "xnv", sprintf "%.40g", $sv->NVX; | |
a798dbf2 MB |
239 | } |
240 | ||
1df34986 AE |
241 | sub B::PVMG::domagic { |
242 | my ($sv,$ix) = @_; | |
243 | nice '-MAGICAL-'; | |
244 | my @mglist = $sv->MAGIC; | |
245 | my (@mgix, @namix); | |
246 | for (@mglist) { | |
247 | push @mgix, $_->OBJ->ix; | |
248 | push @namix, $_->PTR->ix if $_->LENGTH == B::HEf_SVKEY; | |
a798dbf2 | 249 | } |
a798dbf2 | 250 | |
1df34986 AE |
251 | nice '-'.class($sv).'-', |
252 | asm "ldsv", $varix = $ix unless $ix == $varix; | |
253 | for (@mglist) { | |
254 | asm "sv_magic", cstring $_->TYPE; | |
255 | asm "mg_obj", shift @mgix; | |
256 | my $length = $_->LENGTH; | |
257 | if ($length == B::HEf_SVKEY) { | |
258 | asm "mg_namex", shift @namix; | |
259 | } elsif ($length) { | |
260 | asm "newpv", pvstring $_->PTR; | |
261 | asm "mg_name"; | |
262 | } | |
a798dbf2 MB |
263 | } |
264 | } | |
265 | ||
1df34986 AE |
266 | sub B::PVMG::bsave { |
267 | my ($sv,$ix) = @_; | |
268 | my $stashix = $sv->SvSTASH->ix; | |
269 | $sv->B::PVNV::bsave($ix); | |
270 | asm "xmg_stash", $stashix; | |
271 | $sv->domagic($ix) if $sv->MAGICAL; | |
272 | } | |
273 | ||
274 | sub B::PVLV::bsave { | |
275 | my ($sv,$ix) = @_; | |
276 | my $targix = $sv->TARG->ix; | |
277 | $sv->B::PVMG::bsave($ix); | |
278 | asm "xlv_targ", $targix; | |
279 | asm "xlv_targoff", $sv->TARGOFF; | |
280 | asm "xlv_targlen", $sv->TARGLEN; | |
281 | asm "xlv_type", $sv->TYPE; | |
282 | ||
283 | } | |
284 | ||
285 | sub B::BM::bsave { | |
286 | my ($sv,$ix) = @_; | |
287 | $sv->B::PVMG::bsave($ix); | |
288 | asm "xpv_cur", $sv->CUR; | |
289 | asm "xbm_useful", $sv->USEFUL; | |
290 | asm "xbm_previous", $sv->PREVIOUS; | |
291 | asm "xbm_rare", $sv->RARE; | |
292 | } | |
293 | ||
294 | sub B::IO::bsave { | |
295 | my ($io,$ix) = @_; | |
296 | my $topix = $io->TOP_GV->ix; | |
297 | my $fmtix = $io->FMT_GV->ix; | |
298 | my $bottomix = $io->BOTTOM_GV->ix; | |
299 | $io->B::PVMG::bsave($ix); | |
300 | asm "xio_lines", $io->LINES; | |
301 | asm "xio_page", $io->PAGE; | |
302 | asm "xio_page_len", $io->PAGE_LEN; | |
303 | asm "xio_lines_left", $io->LINES_LEFT; | |
304 | asm "xio_top_name", pvix $io->TOP_NAME; | |
305 | asm "xio_top_gv", $topix; | |
306 | asm "xio_fmt_name", pvix $io->FMT_NAME; | |
307 | asm "xio_fmt_gv", $fmtix; | |
308 | asm "xio_bottom_name", pvix $io->BOTTOM_NAME; | |
309 | asm "xio_bottom_gv", $bottomix; | |
310 | asm "xio_subprocess", $io->SUBPROCESS; | |
311 | asm "xio_type", ord $io->IoTYPE; | |
312 | # asm "xio_flags", ord($io->IoFLAGS) & ~32; # XXX XXX | |
313 | } | |
314 | ||
315 | sub B::CV::bsave { | |
316 | my ($cv,$ix) = @_; | |
317 | my $stashix = $cv->STASH->ix; | |
1df34986 AE |
318 | my $gvix = $cv->GV->ix; |
319 | my $padlistix = $cv->PADLIST->ix; | |
320 | my $outsideix = $cv->OUTSIDE->ix; | |
321 | my $constix = $cv->CONST ? $cv->XSUBANY->ix : 0; | |
566ece03 JH |
322 | my $startix = $cv->START->opwalk; |
323 | my $rootix = $cv->ROOT->ix; | |
1df34986 AE |
324 | |
325 | $cv->B::PVMG::bsave($ix); | |
326 | asm "xcv_stash", $stashix; | |
327 | asm "xcv_start", $startix; | |
328 | asm "xcv_root", $rootix; | |
329 | asm "xcv_xsubany", $constix; | |
330 | asm "xcv_gv", $gvix; | |
331 | asm "xcv_file", pvix $cv->FILE if $cv->FILE; # XXX AD | |
332 | asm "xcv_padlist", $padlistix; | |
333 | asm "xcv_outside", $outsideix; | |
334 | asm "xcv_flags", $cv->CvFLAGS; | |
335 | asm "xcv_outside_seq", $cv->OUTSIDE_SEQ; | |
336 | asm "xcv_depth", $cv->DEPTH; | |
337 | } | |
338 | ||
339 | sub B::FM::bsave { | |
340 | my ($form,$ix) = @_; | |
341 | ||
342 | $form->B::CV::bsave($ix); | |
343 | asm "xfm_lines", $form->LINES; | |
344 | } | |
345 | ||
346 | sub B::AV::bsave { | |
347 | my ($av,$ix) = @_; | |
348 | return $av->B::PVMG::bsave($ix) if $av->MAGICAL; | |
349 | my @array = $av->ARRAY; | |
350 | $_ = $_->ix for @array; | |
351 | my $stashix = $av->SvSTASH->ix; | |
352 | ||
353 | nice "-AV-", | |
354 | asm "ldsv", $varix = $ix unless $ix == $varix; | |
355 | asm "av_extend", $av->MAX; | |
356 | asm "av_pushx", $_ for @array; | |
357 | asm "sv_refcnt", $av->REFCNT; | |
1df34986 AE |
358 | asm "xav_flags", $av->AvFLAGS; |
359 | asm "xmg_stash", $stashix; | |
360 | } | |
361 | ||
362 | sub B::GV::desired { | |
363 | my $gv = shift; | |
364 | my ($cv, $form); | |
365 | $files{$gv->FILE} && $gv->LINE | |
366 | || ${$cv = $gv->CV} && $files{$cv->FILE} | |
367 | || ${$form = $gv->FORM} && $files{$form->FILE} | |
a798dbf2 MB |
368 | } |
369 | ||
1df34986 AE |
370 | sub B::HV::bwalk { |
371 | my $hv = shift; | |
372 | return if $walked{$$hv}++; | |
373 | my %stash = $hv->ARRAY; | |
374 | while (my($k,$v) = each %stash) { | |
375 | if ($v->SvTYPE == SVt_PVGV) { | |
376 | my $hash = $v->HV; | |
377 | if ($$hash && $hash->NAME) { | |
378 | $hash->bwalk; | |
379 | } | |
380 | $v->ix(1) if desired $v; | |
381 | } else { | |
382 | nice "[prototype]"; | |
566ece03 JH |
383 | asm "gv_fetchpvx", cstring $hv->NAME . "::$k"; |
384 | $svtab{$$v} = $varix = $tix; | |
1df34986 | 385 | $v->bsave($tix++); |
566ece03 | 386 | asm "sv_flags", $v->FLAGS; |
1df34986 AE |
387 | } |
388 | } | |
a798dbf2 MB |
389 | } |
390 | ||
1df34986 | 391 | ###################################################### |
a798dbf2 | 392 | |
a798dbf2 | 393 | |
1df34986 AE |
394 | sub B::OP::bsave_thin { |
395 | my ($op, $ix) = @_; | |
396 | my $next = $op->next; | |
397 | my $nextix = $optab{$$next}; | |
398 | $nextix = 0, push @cloop, $op unless defined $nextix; | |
399 | if ($ix != $opix) { | |
400 | nice '-'.$op->name.'-', | |
401 | asm "ldop", $opix = $ix; | |
a798dbf2 | 402 | } |
1df34986 AE |
403 | asm "op_next", $nextix; |
404 | asm "op_targ", $op->targ if $op->type; # tricky | |
405 | asm "op_flags", $op->flags; | |
406 | asm "op_private", $op->private; | |
a798dbf2 MB |
407 | } |
408 | ||
1df34986 AE |
409 | sub B::OP::bsave; |
410 | *B::OP::bsave = *B::OP::bsave_thin; | |
a798dbf2 | 411 | |
1df34986 AE |
412 | sub B::UNOP::bsave { |
413 | my ($op, $ix) = @_; | |
414 | my $name = $op->name; | |
415 | my $flags = $op->flags; | |
416 | my $first = $op->first; | |
417 | my $firstix = | |
418 | $name =~ /fl[io]p/ | |
419 | # that's just neat | |
566ece03 | 420 | || (!$ithreads && $name eq 'regcomp') |
1df34986 AE |
421 | # trick for /$a/o in pp_regcomp |
422 | || $name eq 'rv2sv' | |
423 | && $op->flags & OPf_MOD | |
424 | && $op->private & OPpLVAL_INTRO | |
425 | # change #18774 made my life hard | |
426 | ? $first->ix | |
427 | : 0; | |
428 | ||
429 | $op->B::OP::bsave($ix); | |
430 | asm "op_first", $firstix; | |
431 | } | |
432 | ||
566ece03 JH |
433 | sub B::BINOP::bsave { |
434 | my ($op, $ix) = @_; | |
435 | if ($op->name eq 'aassign' && $op->private & B::OPpASSIGN_HASH()) { | |
436 | my $last = $op->last; | |
437 | my $lastix = do { | |
438 | local *B::OP::bsave = *B::OP::bsave_fat; | |
439 | local *B::UNOP::bsave = *B::UNOP::bsave_fat; | |
440 | $last->ix; | |
441 | }; | |
442 | asm "ldop", $lastix unless $lastix == $opix; | |
443 | asm "op_targ", $last->targ; | |
444 | $op->B::OP::bsave($ix); | |
445 | asm "op_last", $lastix; | |
446 | } else { | |
447 | $op->B::OP::bsave($ix); | |
448 | } | |
449 | } | |
450 | ||
451 | # not needed if no pseudohashes | |
452 | ||
453 | *B::BINOP::bsave = *B::OP::bsave if $] >= 5.009; | |
1df34986 AE |
454 | |
455 | # deal with sort / formline | |
456 | ||
457 | sub B::LISTOP::bsave { | |
458 | my ($op, $ix) = @_; | |
459 | my $name = $op->name; | |
460 | if ($name eq 'sort' && $op->flags & (OPf_SPECIAL|OPf_STACKED)) { | |
461 | my $first = $op->first; | |
462 | my $firstix = $first->ix; | |
463 | my $firstsiblix = do { | |
464 | local *B::UNOP::bsave = *B::UNOP::bsave_fat; | |
465 | local *B::LISTOP::bsave = *B::UNOP::bsave_fat; | |
466 | $first->sibling->ix; | |
467 | }; | |
468 | asm "ldop", $firstix unless $firstix == $opix; | |
469 | asm "op_sibling", $firstsiblix; | |
470 | $op->B::OP::bsave($ix); | |
471 | asm "op_first", $firstix; | |
472 | } elsif ($name eq 'formline') { | |
473 | $op->B::UNOP::bsave_fat($ix); | |
a798dbf2 | 474 | } else { |
1df34986 | 475 | $op->B::OP::bsave($ix); |
a798dbf2 | 476 | } |
a798dbf2 MB |
477 | } |
478 | ||
1df34986 | 479 | # fat versions |
a798dbf2 | 480 | |
1df34986 AE |
481 | sub B::OP::bsave_fat { |
482 | my ($op, $ix) = @_; | |
483 | my $siblix = $op->sibling->ix; | |
a798dbf2 | 484 | |
1df34986 AE |
485 | $op->B::OP::bsave_thin($ix); |
486 | asm "op_sibling", $siblix; | |
487 | # asm "op_seq", -1; XXX don't allocate OPs piece by piece | |
a798dbf2 MB |
488 | } |
489 | ||
1df34986 AE |
490 | sub B::UNOP::bsave_fat { |
491 | my ($op,$ix) = @_; | |
492 | my $firstix = $op->first->ix; | |
a798dbf2 | 493 | |
1df34986 AE |
494 | $op->B::OP::bsave($ix); |
495 | asm "op_first", $firstix; | |
a798dbf2 MB |
496 | } |
497 | ||
1df34986 AE |
498 | sub B::BINOP::bsave_fat { |
499 | my ($op,$ix) = @_; | |
500 | my $last = $op->last; | |
501 | my $lastix = $op->last->ix; | |
502 | if ($] < 5.009 && $op->name eq 'aassign' && $last->name eq 'null') { | |
503 | asm "ldop", $lastix unless $lastix == $opix; | |
504 | asm "op_targ", $last->targ; | |
a798dbf2 | 505 | } |
a798dbf2 | 506 | |
1df34986 AE |
507 | $op->B::UNOP::bsave($ix); |
508 | asm "op_last", $lastix; | |
a798dbf2 MB |
509 | } |
510 | ||
1df34986 AE |
511 | sub B::LOGOP::bsave { |
512 | my ($op,$ix) = @_; | |
513 | my $otherix = $op->other->ix; | |
a798dbf2 | 514 | |
1df34986 AE |
515 | $op->B::UNOP::bsave($ix); |
516 | asm "op_other", $otherix; | |
a798dbf2 MB |
517 | } |
518 | ||
1df34986 AE |
519 | sub B::PMOP::bsave { |
520 | my ($op,$ix) = @_; | |
521 | my ($rrop, $rrarg, $rstart); | |
059a8bb7 | 522 | |
1df34986 | 523 | # my $pmnextix = $op->pmnext->ix; # XXX |
059a8bb7 | 524 | |
1df34986 AE |
525 | if ($ithreads) { |
526 | if ($op->name eq 'subst') { | |
527 | $rrop = "op_pmreplroot"; | |
528 | $rrarg = $op->pmreplroot->ix; | |
529 | $rstart = $op->pmreplstart->ix; | |
530 | } elsif ($op->name eq 'pushre') { | |
531 | $rrop = "op_pmreplrootpo"; | |
532 | $rrarg = $op->pmreplroot; | |
a798dbf2 | 533 | } |
1df34986 AE |
534 | $op->B::BINOP::bsave($ix); |
535 | asm "op_pmstashpv", pvix $op->pmstashpv; | |
536 | } else { | |
537 | $rrop = "op_pmreplrootgv"; | |
538 | $rrarg = $op->pmreplroot->ix; | |
539 | $rstart = $op->pmreplstart->ix if $op->name eq 'subst'; | |
540 | my $stashix = $op->pmstash->ix; | |
541 | $op->B::BINOP::bsave($ix); | |
542 | asm "op_pmstash", $stashix; | |
a798dbf2 | 543 | } |
1df34986 AE |
544 | |
545 | asm $rrop, $rrarg if $rrop; | |
546 | asm "op_pmreplstart", $rstart if $rstart; | |
547 | ||
548 | asm "op_pmflags", $op->pmflags; | |
549 | asm "op_pmpermflags", $op->pmpermflags; | |
550 | asm "op_pmdynflags", $op->pmdynflags; | |
551 | # asm "op_pmnext", $pmnextix; # XXX | |
552 | asm "newpv", pvstring $op->precomp; | |
553 | asm "pregcomp"; | |
a798dbf2 MB |
554 | } |
555 | ||
1df34986 AE |
556 | sub B::SVOP::bsave { |
557 | my ($op,$ix) = @_; | |
558 | my $svix = $op->sv->ix; | |
559 | ||
560 | $op->B::OP::bsave($ix); | |
561 | asm "op_sv", $svix; | |
a798dbf2 MB |
562 | } |
563 | ||
1df34986 AE |
564 | sub B::PADOP::bsave { |
565 | my ($op,$ix) = @_; | |
566 | ||
567 | $op->B::OP::bsave($ix); | |
568 | asm "op_padix", $op->padix; | |
a798dbf2 MB |
569 | } |
570 | ||
1df34986 AE |
571 | sub B::PVOP::bsave { |
572 | my ($op,$ix) = @_; | |
573 | $op->B::OP::bsave($ix); | |
574 | return unless my $pv = $op->pv; | |
575 | ||
576 | if ($op->name eq 'trans') { | |
577 | asm "op_pv_tr", join ',', length($pv)/2, unpack("s*", $pv); | |
578 | } else { | |
579 | asm "newpv", pvstring $pv; | |
580 | asm "op_pv"; | |
a798dbf2 | 581 | } |
a798dbf2 MB |
582 | } |
583 | ||
1df34986 AE |
584 | sub B::LOOP::bsave { |
585 | my ($op,$ix) = @_; | |
586 | my $nextix = $op->nextop->ix; | |
587 | my $lastix = $op->lastop->ix; | |
588 | my $redoix = $op->redoop->ix; | |
589 | ||
590 | $op->B::BINOP::bsave($ix); | |
591 | asm "op_redoop", $redoix; | |
592 | asm "op_nextop", $nextix; | |
593 | asm "op_lastop", $lastix; | |
a798dbf2 MB |
594 | } |
595 | ||
1df34986 AE |
596 | sub B::COP::bsave { |
597 | my ($cop,$ix) = @_; | |
598 | my $warnix = $cop->warnings->ix; | |
599 | my $ioix = $cop->io->ix; | |
600 | if ($ithreads) { | |
601 | $cop->B::OP::bsave($ix); | |
602 | asm "cop_stashpv", pvix $cop->stashpv; | |
603 | asm "cop_file", pvix $cop->file; | |
604 | } else { | |
605 | my $stashix = $cop->stash->ix; | |
606 | my $fileix = $cop->filegv->ix(1); | |
607 | $cop->B::OP::bsave($ix); | |
608 | asm "cop_stash", $stashix; | |
609 | asm "cop_filegv", $fileix; | |
a798dbf2 | 610 | } |
1df34986 AE |
611 | asm "cop_label", pvix $cop->label if $cop->label; # XXX AD |
612 | asm "cop_seq", $cop->cop_seq; | |
613 | asm "cop_arybase", $cop->arybase; | |
614 | asm "cop_line", $cop->line; | |
615 | asm "cop_warnings", $warnix; | |
616 | asm "cop_io", $ioix; | |
a798dbf2 MB |
617 | } |
618 | ||
1df34986 AE |
619 | sub B::OP::opwalk { |
620 | my $op = shift; | |
621 | my $ix = $optab{$$op}; | |
622 | defined($ix) ? $ix : do { | |
623 | my $ix; | |
624 | my @oplist = $op->oplist; | |
625 | push @cloop, undef; | |
626 | $ix = $_->ix while $_ = pop @oplist; | |
627 | while ($_ = pop @cloop) { | |
628 | asm "ldop", $optab{$$_}; | |
629 | asm "op_next", $optab{${$_->next}}; | |
a798dbf2 | 630 | } |
1df34986 | 631 | $ix; |
a798dbf2 MB |
632 | } |
633 | } | |
634 | ||
1df34986 AE |
635 | ################################################# |
636 | ||
637 | sub save_cq { | |
638 | my $av; | |
639 | if (($av=begin_av)->isa("B::AV")) { | |
640 | if ($savebegins) { | |
641 | for ($av->ARRAY) { | |
642 | next unless $_->FILE eq $0; | |
643 | asm "push_begin", $_->ix; | |
644 | } | |
645 | } else { | |
646 | for ($av->ARRAY) { | |
647 | next unless $_->FILE eq $0; | |
566ece03 | 648 | # XXX BEGIN { goto A while 1; A: } |
1df34986 | 649 | for (my $op = $_->START; $$op; $op = $op->next) { |
566ece03 JH |
650 | next unless $op->name eq 'require' || |
651 | # this kludge needed for tests | |
652 | $op->name eq 'gv' && do { | |
653 | my $gv = class($op) eq 'SVOP' ? | |
654 | $op->gv : | |
655 | (($_->PADLIST->ARRAY)[1]->ARRAY)[$op->padix]; | |
656 | $$gv && $gv->NAME =~ /use_ok|plan/ | |
657 | }; | |
1df34986 AE |
658 | asm "push_begin", $_->ix; |
659 | last; | |
059a8bb7 | 660 | } |
059a8bb7 JH |
661 | } |
662 | } | |
a798dbf2 | 663 | } |
1df34986 AE |
664 | if (($av=init_av)->isa("B::AV")) { |
665 | for ($av->ARRAY) { | |
666 | next unless $_->FILE eq $0; | |
667 | asm "push_init", $_->ix; | |
059a8bb7 JH |
668 | } |
669 | } | |
1df34986 AE |
670 | if (($av=end_av)->isa("B::AV")) { |
671 | for ($av->ARRAY) { | |
672 | next unless $_->FILE eq $0; | |
673 | asm "push_end", $_->ix; | |
059a8bb7 | 674 | } |
a798dbf2 MB |
675 | } |
676 | } | |
677 | ||
a798dbf2 | 678 | sub compile { |
566ece03 | 679 | my ($head, $scan, $T_inhinc, $keep_syn); |
1df34986 AE |
680 | my $cwd = ''; |
681 | $files{$0} = 1; | |
682 | sub keep_syn { | |
683 | $keep_syn = 1; | |
684 | *B::OP::bsave = *B::OP::bsave_fat; | |
685 | *B::UNOP::bsave = *B::UNOP::bsave_fat; | |
686 | *B::BINOP::bsave = *B::BINOP::bsave_fat; | |
687 | *B::LISTOP::bsave = *B::LISTOP::bsave_fat; | |
688 | } | |
689 | sub bwarn { print STDERR "Bytecode.pm: @_\n" } | |
690 | ||
691 | for (@_) { | |
692 | if (/^-S/) { | |
693 | *newasm = *endasm = sub { }; | |
694 | *asm = sub { print " @_\n" }; | |
695 | *nice = sub ($) { print "\n@_\n" }; | |
696 | } elsif (/^-H/) { | |
697 | require ByteLoader; | |
698 | $head = "#! $^X\nuse ByteLoader $ByteLoader::VERSION;\n"; | |
699 | } elsif (/^-k/) { | |
700 | keep_syn; | |
701 | } elsif (/^-o(.*)$/) { | |
566ece03 | 702 | open STDOUT, ">$1" or die "open $1: $!"; |
1df34986 AE |
703 | } elsif (/^-f(.*)$/) { |
704 | $files{$1} = 1; | |
566ece03 JH |
705 | } elsif (/^-s(.*)$/) { |
706 | $scan = length($1) ? $1 : $0; | |
1df34986 AE |
707 | } elsif (/^-b/) { |
708 | $savebegins = 1; | |
566ece03 JH |
709 | # this is here for the testsuite |
710 | } elsif (/^-TI/) { | |
1df34986 | 711 | $T_inhinc = 1; |
566ece03 JH |
712 | } elsif (/^-TF(.*)/) { |
713 | my $thatfile = $1; | |
714 | *B::COP::file = sub { $thatfile }; | |
a798dbf2 | 715 | } else { |
1df34986 | 716 | bwarn "Ignoring '$_' option"; |
a798dbf2 | 717 | } |
1df34986 AE |
718 | } |
719 | if ($scan) { | |
566ece03 JH |
720 | my $f; |
721 | open $f, $scan | |
722 | or bwarn("cannot rescan '$_'"), next; | |
723 | while (<$f>) { | |
724 | /^#\s*line\s+\d+\s+("?)(.*)\1/ and $files{$2} = 1; | |
725 | /^#/ and next; | |
726 | if (/\bgoto\b/ && !$keep_syn) { | |
727 | bwarn "keeping the syntax tree: \"goto\" op found"; | |
728 | keep_syn; | |
a798dbf2 | 729 | } |
1df34986 | 730 | } |
566ece03 | 731 | close $f; |
1df34986 AE |
732 | } |
733 | binmode STDOUT; | |
734 | return sub { | |
735 | print $head if $head; | |
736 | newasm sub { print @_ }; | |
737 | ||
738 | defstash->bwalk; | |
739 | asm "main_start", main_start->opwalk; | |
740 | asm "main_root", main_root->ix; | |
741 | asm "main_cv", main_cv->ix; | |
742 | asm "curpad", (comppadlist->ARRAY)[1]->ix; | |
743 | ||
744 | asm "signal", cstring "__WARN__" # XXX | |
745 | if warnhook->ix; | |
746 | asm "incav", inc_gv->AV->ix if $T_inhinc; | |
747 | save_cq; | |
748 | asm "incav", inc_gv->AV->ix if $T_inhinc; | |
749 | asm "dowarn", dowarn; | |
750 | ||
751 | { | |
752 | no strict 'refs'; | |
753 | nice "<DATA>"; | |
754 | my $dh = *{defstash->NAME."::DATA"}; | |
755 | local undef $/; | |
756 | if (length (my $data = <$dh>)) { | |
757 | asm "data", ord 'D'; | |
758 | print $data; | |
a798dbf2 | 759 | } else { |
1df34986 | 760 | asm "ret"; |
a798dbf2 | 761 | } |
a798dbf2 | 762 | } |
1df34986 AE |
763 | |
764 | endasm; | |
a798dbf2 MB |
765 | } |
766 | } | |
767 | ||
768 | 1; | |
566ece03 JH |
769 | |
770 | =head1 NAME | |
771 | ||
772 | B::Bytecode - Perl compiler's bytecode backend | |
773 | ||
774 | =head1 SYNOPSIS | |
775 | ||
776 | B<perl -MO=Bytecode>[B<,-H>][B<,-o>I<script.plc>] I<script.pl> | |
777 | ||
778 | =head1 DESCRIPTION | |
779 | ||
780 | Compiles a Perl script into a bytecode format that could be loaded | |
781 | later by the ByteLoader module and executed as a regular Perl script. | |
782 | ||
783 | =head1 EXAMPLE | |
784 | ||
785 | $ perl -MO=Bytecode,-H,-ohi -e 'print "hi!\n"' | |
786 | $ perl hi | |
787 | hi! | |
788 | ||
789 | =head1 OPTIONS | |
790 | ||
791 | =over 4 | |
792 | ||
793 | =item B<-b> | |
794 | ||
795 | Save all the BEGIN blocks. Normally only BEGIN blocks that C<require> | |
796 | other files (ex. C<use Foo;>) are saved. | |
797 | ||
798 | =item B<-H> | |
799 | ||
800 | prepend a C<use ByteLoader VERSION;> line to the produced bytecode. | |
801 | ||
802 | =item B<-k> | |
803 | ||
804 | keep the syntax tree - it is stripped by default. | |
805 | ||
806 | =item B<-o>I<outfile> | |
807 | ||
808 | put the bytecode in <outfile> instead of dumping it to STDOUT. | |
809 | ||
810 | =item B<-s> | |
811 | ||
812 | scan the script for C<# line ..> directives and for <goto LABEL> | |
813 | expressions. When gotos are found keep the syntax tree. | |
814 | ||
815 | =back | |
816 | ||
817 | =head1 KNOWN BUGS | |
818 | ||
819 | =over 4 | |
820 | ||
821 | =item * | |
822 | ||
823 | C<BEGIN { goto A: while 1; A: }> won't even compile. | |
824 | ||
825 | =item * | |
826 | ||
827 | C<?...?> and C<reset> do not work as expected. | |
828 | ||
829 | =item * | |
830 | ||
831 | variables in C<(?{ ... })> constructs are not properly scoped. | |
832 | ||
833 | =item * | |
834 | ||
835 | scripts that use source filters will fail miserably. | |
836 | ||
837 | =back | |
838 | ||
839 | =head1 NOTICE | |
840 | ||
841 | There are also undocumented bugs and options. | |
842 | ||
843 | THIS CODE IS HIGHLY EXPERIMENTAL. USE AT YOUR OWN RISK. | |
844 | ||
845 | =head1 AUTHORS | |
846 | ||
847 | Originally written by Malcolm Beattie <mbeattie@sable.ox.ac.uk> and | |
848 | modified by Benjamin Stuhl <sho_pi@hotmail.com>. | |
849 | ||
850 | Rewritten by Enache Adrian <enache@rdslink.ro>, 2003 a.d. | |
851 | ||
852 | =cut |