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| a798dbf2 |
1 | # C.pm |
| 2 | # |
| 1a52ab62 |
3 | # Copyright (c) 1996, 1997, 1998 Malcolm Beattie |
| a798dbf2 |
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 |
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 |
44 | package B::C; |
| 45 | use Exporter (); |
| 46 | @ISA = qw(Exporter); |
| 0cc1d052 |
47 | @EXPORT_OK = qw(output_all output_boilerplate output_main mark_unused |
| 48 | init_sections set_callback save_unused_subs objsym save_context); |
| a798dbf2 |
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 |
| 0cc1d052 |
52 | threadsv_names main_cv init_av opnumber); |
| a798dbf2 |
53 | use B::Asmdata qw(@specialsv_name); |
| 54 | |
| 55 | use FileHandle; |
| 56 | use Carp; |
| 57 | use strict; |
| 58 | |
| 59 | my $hv_index = 0; |
| 60 | my $gv_index = 0; |
| 61 | my $re_index = 0; |
| 62 | my $pv_index = 0; |
| 63 | my $anonsub_index = 0; |
| 44887cfa |
64 | my $initsub_index = 0; |
| a798dbf2 |
65 | |
| 66 | my %symtable; |
| 67 | my $warn_undefined_syms; |
| 68 | my $verbose; |
| 66a2622e |
69 | my %unused_sub_packages; |
| a798dbf2 |
70 | my $nullop_count; |
| 66a2622e |
71 | my $pv_copy_on_grow = 0; |
| a798dbf2 |
72 | my ($debug_cops, $debug_av, $debug_cv, $debug_mg); |
| 73 | |
| 74 | my @threadsv_names; |
| 75 | BEGIN { |
| 76 | @threadsv_names = threadsv_names(); |
| 77 | } |
| 78 | |
| 79 | # Code sections |
| 66a2622e |
80 | my ($init, $decl, $symsect, $binopsect, $condopsect, $copsect, |
| a798dbf2 |
81 | $gvopsect, $listopsect, $logopsect, $loopsect, $opsect, $pmopsect, |
| 82 | $pvopsect, $svopsect, $unopsect, $svsect, $xpvsect, $xpvavsect, |
| 83 | $xpvhvsect, $xpvcvsect, $xpvivsect, $xpvnvsect, $xpvmgsect, $xpvlvsect, |
| 31d7d75a |
84 | $xrvsect, $xpvbmsect, $xpviosect, $bootstrap); |
| a798dbf2 |
85 | |
| 86 | sub walk_and_save_optree; |
| 87 | my $saveoptree_callback = \&walk_and_save_optree; |
| 88 | sub set_callback { $saveoptree_callback = shift } |
| 89 | sub saveoptree { &$saveoptree_callback(@_) } |
| 90 | |
| 91 | sub walk_and_save_optree { |
| 92 | my ($name, $root, $start) = @_; |
| 93 | walkoptree($root, "save"); |
| 94 | return objsym($start); |
| 95 | } |
| 96 | |
| 97 | # Current workaround/fix for op_free() trying to free statically |
| 98 | # defined OPs is to set op_seq = -1 and check for that in op_free(). |
| 99 | # Instead of hardwiring -1 in place of $op->seq, we use $op_seq |
| 100 | # so that it can be changed back easily if necessary. In fact, to |
| 101 | # stop compilers from moaning about a U16 being initialised with an |
| 102 | # uncast -1 (the printf format is %d so we can't tweak it), we have |
| 103 | # to "know" that op_seq is a U16 and use 65535. Ugh. |
| 104 | my $op_seq = 65535; |
| 105 | |
| 106 | sub AVf_REAL () { 1 } |
| 107 | |
| 0cc1d052 |
108 | # Look this up here so we can do just a number compare |
| 109 | # rather than looking up the name of every BASEOP in B::OP |
| 110 | my $OP_THREADSV = opnumber('threadsv'); |
| a798dbf2 |
111 | |
| 112 | sub savesym { |
| 113 | my ($obj, $value) = @_; |
| 114 | my $sym = sprintf("s\\_%x", $$obj); |
| 115 | $symtable{$sym} = $value; |
| 116 | } |
| 117 | |
| 118 | sub objsym { |
| 119 | my $obj = shift; |
| 120 | return $symtable{sprintf("s\\_%x", $$obj)}; |
| 121 | } |
| 122 | |
| 123 | sub getsym { |
| 124 | my $sym = shift; |
| 125 | my $value; |
| 126 | |
| 127 | return 0 if $sym eq "sym_0"; # special case |
| 128 | $value = $symtable{$sym}; |
| 129 | if (defined($value)) { |
| 130 | return $value; |
| 131 | } else { |
| 132 | warn "warning: undefined symbol $sym\n" if $warn_undefined_syms; |
| 133 | return "UNUSED"; |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | sub savepv { |
| 66a2622e |
138 | my $pv = shift; |
| 139 | $pv = '' unless defined $pv; # Is this sane ? |
| a798dbf2 |
140 | my $pvsym = 0; |
| 141 | my $pvmax = 0; |
| 66a2622e |
142 | if ($pv_copy_on_grow) { |
| a798dbf2 |
143 | my $cstring = cstring($pv); |
| 144 | if ($cstring ne "0") { # sic |
| 145 | $pvsym = sprintf("pv%d", $pv_index++); |
| 146 | $decl->add(sprintf("static char %s[] = %s;", $pvsym, $cstring)); |
| 147 | } |
| 148 | } else { |
| 149 | $pvmax = length($pv) + 1; |
| 150 | } |
| 151 | return ($pvsym, $pvmax); |
| 152 | } |
| 153 | |
| 154 | sub B::OP::save { |
| 155 | my ($op, $level) = @_; |
| 156 | my $type = $op->type; |
| 157 | $nullop_count++ unless $type; |
| 0cc1d052 |
158 | if ($type == $OP_THREADSV) { |
| a798dbf2 |
159 | # saves looking up ppaddr but it's a bit naughty to hard code this |
| 160 | $init->add(sprintf("(void)find_threadsv(%s);", |
| 161 | cstring($threadsv_names[$op->targ]))); |
| 162 | } |
| 163 | $opsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x", |
| 164 | ${$op->next}, ${$op->sibling}, $op->ppaddr, $op->targ, |
| 165 | $type, $op_seq, $op->flags, $op->private)); |
| 166 | savesym($op, sprintf("&op_list[%d]", $opsect->index)); |
| 167 | } |
| 168 | |
| 169 | sub B::FAKEOP::new { |
| 170 | my ($class, %objdata) = @_; |
| 171 | bless \%objdata, $class; |
| 172 | } |
| 173 | |
| 174 | sub B::FAKEOP::save { |
| 175 | my ($op, $level) = @_; |
| 176 | $opsect->add(sprintf("%s, %s, %s, %u, %u, %u, 0x%x, 0x%x", |
| 177 | $op->next, $op->sibling, $op->ppaddr, $op->targ, |
| 178 | $op->type, $op_seq, $op->flags, $op->private)); |
| 179 | return sprintf("&op_list[%d]", $opsect->index); |
| 180 | } |
| 181 | |
| 182 | sub B::FAKEOP::next { $_[0]->{"next"} || 0 } |
| 183 | sub B::FAKEOP::type { $_[0]->{type} || 0} |
| 184 | sub B::FAKEOP::sibling { $_[0]->{sibling} || 0 } |
| 185 | sub B::FAKEOP::ppaddr { $_[0]->{ppaddr} || 0 } |
| 186 | sub B::FAKEOP::targ { $_[0]->{targ} || 0 } |
| 187 | sub B::FAKEOP::flags { $_[0]->{flags} || 0 } |
| 188 | sub B::FAKEOP::private { $_[0]->{private} || 0 } |
| 189 | |
| 190 | sub B::UNOP::save { |
| 191 | my ($op, $level) = @_; |
| 192 | $unopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x", |
| 193 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 194 | $op->targ, $op->type, $op_seq, $op->flags, |
| 195 | $op->private, ${$op->first})); |
| 196 | savesym($op, sprintf("(OP*)&unop_list[%d]", $unopsect->index)); |
| 197 | } |
| 198 | |
| 199 | sub B::BINOP::save { |
| 200 | my ($op, $level) = @_; |
| 201 | $binopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x", |
| 202 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 203 | $op->targ, $op->type, $op_seq, $op->flags, |
| 204 | $op->private, ${$op->first}, ${$op->last})); |
| 205 | savesym($op, sprintf("(OP*)&binop_list[%d]", $binopsect->index)); |
| 206 | } |
| 207 | |
| 208 | sub B::LISTOP::save { |
| 209 | my ($op, $level) = @_; |
| 210 | $listopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, %u", |
| 211 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 212 | $op->targ, $op->type, $op_seq, $op->flags, |
| 213 | $op->private, ${$op->first}, ${$op->last}, |
| 214 | $op->children)); |
| 215 | savesym($op, sprintf("(OP*)&listop_list[%d]", $listopsect->index)); |
| 216 | } |
| 217 | |
| 218 | sub B::LOGOP::save { |
| 219 | my ($op, $level) = @_; |
| 220 | $logopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x", |
| 221 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 222 | $op->targ, $op->type, $op_seq, $op->flags, |
| 223 | $op->private, ${$op->first}, ${$op->other})); |
| 224 | savesym($op, sprintf("(OP*)&logop_list[%d]", $logopsect->index)); |
| 225 | } |
| 226 | |
| 227 | sub B::CONDOP::save { |
| 228 | my ($op, $level) = @_; |
| 229 | $condopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, s\\_%x", |
| 230 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 231 | $op->targ, $op->type, $op_seq, $op->flags, |
| 232 | $op->private, ${$op->first}, ${$op->true}, |
| 233 | ${$op->false})); |
| 234 | savesym($op, sprintf("(OP*)&condop_list[%d]", $condopsect->index)); |
| 235 | } |
| 236 | |
| 237 | sub B::LOOP::save { |
| 238 | my ($op, $level) = @_; |
| 239 | #warn sprintf("LOOP: redoop %s, nextop %s, lastop %s\n", |
| 240 | # peekop($op->redoop), peekop($op->nextop), |
| 241 | # peekop($op->lastop)); # debug |
| 242 | $loopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, %u, s\\_%x, s\\_%x, s\\_%x", |
| 243 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 244 | $op->targ, $op->type, $op_seq, $op->flags, |
| 245 | $op->private, ${$op->first}, ${$op->last}, |
| 246 | $op->children, ${$op->redoop}, ${$op->nextop}, |
| 247 | ${$op->lastop})); |
| 248 | savesym($op, sprintf("(OP*)&loop_list[%d]", $loopsect->index)); |
| 249 | } |
| 250 | |
| 251 | sub B::PVOP::save { |
| 252 | my ($op, $level) = @_; |
| 253 | $pvopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, %s", |
| 254 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 255 | $op->targ, $op->type, $op_seq, $op->flags, |
| 256 | $op->private, cstring($op->pv))); |
| 257 | savesym($op, sprintf("(OP*)&pvop_list[%d]", $pvopsect->index)); |
| 258 | } |
| 259 | |
| 260 | sub B::SVOP::save { |
| 261 | my ($op, $level) = @_; |
| 262 | my $svsym = $op->sv->save; |
| 263 | $svopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, %s", |
| 264 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 265 | $op->targ, $op->type, $op_seq, $op->flags, |
| 266 | $op->private, "(SV*)$svsym")); |
| 267 | savesym($op, sprintf("(OP*)&svop_list[%d]", $svopsect->index)); |
| 268 | } |
| 269 | |
| 270 | sub B::GVOP::save { |
| 271 | my ($op, $level) = @_; |
| 272 | my $gvsym = $op->gv->save; |
| 273 | $gvopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, Nullgv", |
| 274 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 275 | $op->targ, $op->type, $op_seq, $op->flags, |
| 276 | $op->private)); |
| 277 | $init->add(sprintf("gvop_list[%d].op_gv = %s;", $gvopsect->index, $gvsym)); |
| 278 | savesym($op, sprintf("(OP*)&gvop_list[%d]", $gvopsect->index)); |
| 279 | } |
| 280 | |
| 281 | sub B::COP::save { |
| 282 | my ($op, $level) = @_; |
| 283 | my $gvsym = $op->filegv->save; |
| 284 | my $stashsym = $op->stash->save; |
| 285 | warn sprintf("COP: line %d file %s\n", $op->line, $op->filegv->SV->PV) |
| 286 | if $debug_cops; |
| 287 | $copsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, %s, Nullhv, Nullgv, %u, %d, %u", |
| 288 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 289 | $op->targ, $op->type, $op_seq, $op->flags, |
| 290 | $op->private, cstring($op->label), $op->cop_seq, |
| 291 | $op->arybase, $op->line)); |
| 292 | my $copix = $copsect->index; |
| 293 | $init->add(sprintf("cop_list[%d].cop_filegv = %s;", $copix, $gvsym), |
| 294 | sprintf("cop_list[%d].cop_stash = %s;", $copix, $stashsym)); |
| 295 | savesym($op, "(OP*)&cop_list[$copix]"); |
| 296 | } |
| 297 | |
| 298 | sub B::PMOP::save { |
| 299 | my ($op, $level) = @_; |
| 300 | my $replroot = $op->pmreplroot; |
| 301 | my $replstart = $op->pmreplstart; |
| 302 | my $replrootfield = sprintf("s\\_%x", $$replroot); |
| 303 | my $replstartfield = sprintf("s\\_%x", $$replstart); |
| 304 | my $gvsym; |
| 305 | my $ppaddr = $op->ppaddr; |
| 306 | if ($$replroot) { |
| 307 | # OP_PUSHRE (a mutated version of OP_MATCH for the regexp |
| 308 | # argument to a split) stores a GV in op_pmreplroot instead |
| 309 | # of a substitution syntax tree. We don't want to walk that... |
| 310 | if ($ppaddr eq "pp_pushre") { |
| 311 | $gvsym = $replroot->save; |
| 312 | # warn "PMOP::save saving a pp_pushre with GV $gvsym\n"; # debug |
| 313 | $replrootfield = 0; |
| 314 | } else { |
| 315 | $replstartfield = saveoptree("*ignore*", $replroot, $replstart); |
| 316 | } |
| 317 | } |
| 318 | # pmnext handling is broken in perl itself, I think. Bad op_pmnext |
| 319 | # fields aren't noticed in perl's runtime (unless you try reset) but we |
| 320 | # segfault when trying to dereference it to find op->op_pmnext->op_type |
| 321 | $pmopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, %u, %s, %s, 0, 0, 0x%x, 0x%x", |
| 322 | ${$op->next}, ${$op->sibling}, $ppaddr, $op->targ, |
| 323 | $op->type, $op_seq, $op->flags, $op->private, |
| 324 | ${$op->first}, ${$op->last}, $op->children, |
| 325 | $replrootfield, $replstartfield, |
| 326 | $op->pmflags, $op->pmpermflags,)); |
| 327 | my $pm = sprintf("pmop_list[%d]", $pmopsect->index); |
| 328 | my $re = $op->precomp; |
| 329 | if (defined($re)) { |
| 330 | my $resym = sprintf("re%d", $re_index++); |
| 331 | $decl->add(sprintf("static char *$resym = %s;", cstring($re))); |
| 332 | $init->add(sprintf("$pm.op_pmregexp = pregcomp($resym, $resym + %u, &$pm);", |
| 333 | length($re))); |
| 334 | } |
| 335 | if ($gvsym) { |
| 336 | $init->add("$pm.op_pmreplroot = (OP*)$gvsym;"); |
| 337 | } |
| 338 | savesym($op, sprintf("(OP*)&pmop_list[%d]", $pmopsect->index)); |
| 339 | } |
| 340 | |
| 341 | sub B::SPECIAL::save { |
| 342 | my ($sv) = @_; |
| 343 | # special case: $$sv is not the address but an index into specialsv_list |
| 344 | # warn "SPECIAL::save specialsv $$sv\n"; # debug |
| 345 | my $sym = $specialsv_name[$$sv]; |
| 346 | if (!defined($sym)) { |
| 347 | confess "unknown specialsv index $$sv passed to B::SPECIAL::save"; |
| 348 | } |
| 349 | return $sym; |
| 350 | } |
| 351 | |
| 352 | sub B::OBJECT::save {} |
| 353 | |
| 354 | sub B::NULL::save { |
| 355 | my ($sv) = @_; |
| 356 | my $sym = objsym($sv); |
| 357 | return $sym if defined $sym; |
| 358 | # warn "Saving SVt_NULL SV\n"; # debug |
| 359 | # debug |
| 360 | #if ($$sv == 0) { |
| 361 | # warn "NULL::save for sv = 0 called from @{[(caller(1))[3]]}\n"; |
| 362 | #} |
| 363 | $svsect->add(sprintf("0, %u, 0x%x", $sv->REFCNT + 1, $sv->FLAGS)); |
| 364 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 365 | } |
| 366 | |
| 367 | sub B::IV::save { |
| 368 | my ($sv) = @_; |
| 369 | my $sym = objsym($sv); |
| 370 | return $sym if defined $sym; |
| 371 | $xpvivsect->add(sprintf("0, 0, 0, %d", $sv->IVX)); |
| 372 | $svsect->add(sprintf("&xpviv_list[%d], %lu, 0x%x", |
| 373 | $xpvivsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
| 374 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 375 | } |
| 376 | |
| 377 | sub B::NV::save { |
| 378 | my ($sv) = @_; |
| 379 | my $sym = objsym($sv); |
| 380 | return $sym if defined $sym; |
| 381 | $xpvnvsect->add(sprintf("0, 0, 0, %d, %s", $sv->IVX, $sv->NVX)); |
| 382 | $svsect->add(sprintf("&xpvnv_list[%d], %lu, 0x%x", |
| 383 | $xpvnvsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
| 384 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 385 | } |
| 386 | |
| 387 | sub B::PVLV::save { |
| 388 | my ($sv) = @_; |
| 389 | my $sym = objsym($sv); |
| 390 | return $sym if defined $sym; |
| 391 | my $pv = $sv->PV; |
| 392 | my $len = length($pv); |
| 393 | my ($pvsym, $pvmax) = savepv($pv); |
| 394 | my ($lvtarg, $lvtarg_sym); |
| 395 | $xpvlvsect->add(sprintf("%s, %u, %u, %d, %g, 0, 0, %u, %u, 0, %s", |
| 396 | $pvsym, $len, $pvmax, $sv->IVX, $sv->NVX, |
| 397 | $sv->TARGOFF, $sv->TARGLEN, cchar($sv->TYPE))); |
| 398 | $svsect->add(sprintf("&xpvlv_list[%d], %lu, 0x%x", |
| 399 | $xpvlvsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
| 400 | if (!$pv_copy_on_grow) { |
| 401 | $init->add(sprintf("xpvlv_list[%d].xpv_pv = savepvn(%s, %u);", |
| 402 | $xpvlvsect->index, cstring($pv), $len)); |
| 403 | } |
| 404 | $sv->save_magic; |
| 405 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 406 | } |
| 407 | |
| 408 | sub B::PVIV::save { |
| 409 | my ($sv) = @_; |
| 410 | my $sym = objsym($sv); |
| 411 | return $sym if defined $sym; |
| 412 | my $pv = $sv->PV; |
| 413 | my $len = length($pv); |
| 414 | my ($pvsym, $pvmax) = savepv($pv); |
| 415 | $xpvivsect->add(sprintf("%s, %u, %u, %d", $pvsym, $len, $pvmax, $sv->IVX)); |
| 416 | $svsect->add(sprintf("&xpviv_list[%d], %u, 0x%x", |
| 417 | $xpvivsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
| 418 | if (!$pv_copy_on_grow) { |
| 419 | $init->add(sprintf("xpviv_list[%d].xpv_pv = savepvn(%s, %u);", |
| 420 | $xpvivsect->index, cstring($pv), $len)); |
| 421 | } |
| 422 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 423 | } |
| 424 | |
| 425 | sub B::PVNV::save { |
| 426 | my ($sv) = @_; |
| 427 | my $sym = objsym($sv); |
| 428 | return $sym if defined $sym; |
| 66a2622e |
429 | my $pv = $sv->PV; |
| 430 | $pv = '' unless defined $pv; |
| a798dbf2 |
431 | my $len = length($pv); |
| 432 | my ($pvsym, $pvmax) = savepv($pv); |
| 433 | $xpvnvsect->add(sprintf("%s, %u, %u, %d, %s", |
| 434 | $pvsym, $len, $pvmax, $sv->IVX, $sv->NVX)); |
| 435 | $svsect->add(sprintf("&xpvnv_list[%d], %lu, 0x%x", |
| 436 | $xpvnvsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
| 437 | if (!$pv_copy_on_grow) { |
| 438 | $init->add(sprintf("xpvnv_list[%d].xpv_pv = savepvn(%s,%u);", |
| 439 | $xpvnvsect->index, cstring($pv), $len)); |
| 440 | } |
| 441 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 442 | } |
| 443 | |
| 444 | sub B::BM::save { |
| 445 | my ($sv) = @_; |
| 446 | my $sym = objsym($sv); |
| 447 | return $sym if defined $sym; |
| 448 | my $pv = $sv->PV . "\0" . $sv->TABLE; |
| 449 | my $len = length($pv); |
| 450 | $xpvbmsect->add(sprintf("0, %u, %u, %d, %s, 0, 0, %d, %u, 0x%x", |
| 451 | $len, $len + 258, $sv->IVX, $sv->NVX, |
| 452 | $sv->USEFUL, $sv->PREVIOUS, $sv->RARE)); |
| 453 | $svsect->add(sprintf("&xpvbm_list[%d], %lu, 0x%x", |
| 454 | $xpvbmsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
| 455 | $sv->save_magic; |
| 456 | $init->add(sprintf("xpvbm_list[%d].xpv_pv = savepvn(%s, %u);", |
| 457 | $xpvbmsect->index, cstring($pv), $len), |
| 458 | sprintf("xpvbm_list[%d].xpv_cur = %u;", |
| 459 | $xpvbmsect->index, $len - 257)); |
| 460 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 461 | } |
| 462 | |
| 463 | sub B::PV::save { |
| 464 | my ($sv) = @_; |
| 465 | my $sym = objsym($sv); |
| 466 | return $sym if defined $sym; |
| 467 | my $pv = $sv->PV; |
| 468 | my $len = length($pv); |
| 469 | my ($pvsym, $pvmax) = savepv($pv); |
| 470 | $xpvsect->add(sprintf("%s, %u, %u", $pvsym, $len, $pvmax)); |
| 471 | $svsect->add(sprintf("&xpv_list[%d], %lu, 0x%x", |
| 472 | $xpvsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
| 473 | if (!$pv_copy_on_grow) { |
| 474 | $init->add(sprintf("xpv_list[%d].xpv_pv = savepvn(%s, %u);", |
| 475 | $xpvsect->index, cstring($pv), $len)); |
| 476 | } |
| 477 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 478 | } |
| 479 | |
| 480 | sub B::PVMG::save { |
| 481 | my ($sv) = @_; |
| 482 | my $sym = objsym($sv); |
| 483 | return $sym if defined $sym; |
| 484 | my $pv = $sv->PV; |
| 485 | my $len = length($pv); |
| 486 | my ($pvsym, $pvmax) = savepv($pv); |
| 487 | $xpvmgsect->add(sprintf("%s, %u, %u, %d, %s, 0, 0", |
| 488 | $pvsym, $len, $pvmax, $sv->IVX, $sv->NVX)); |
| 489 | $svsect->add(sprintf("&xpvmg_list[%d], %lu, 0x%x", |
| 490 | $xpvmgsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
| 491 | if (!$pv_copy_on_grow) { |
| 492 | $init->add(sprintf("xpvmg_list[%d].xpv_pv = savepvn(%s, %u);", |
| 493 | $xpvmgsect->index, cstring($pv), $len)); |
| 494 | } |
| 495 | $sym = savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 496 | $sv->save_magic; |
| 497 | return $sym; |
| 498 | } |
| 499 | |
| 500 | sub B::PVMG::save_magic { |
| 501 | my ($sv) = @_; |
| 502 | #warn sprintf("saving magic for %s (0x%x)\n", class($sv), $$sv); # debug |
| 503 | my $stash = $sv->SvSTASH; |
| 504 | if ($$stash) { |
| 505 | warn sprintf("xmg_stash = %s (0x%x)\n", $stash->NAME, $$stash) |
| 506 | if $debug_mg; |
| 507 | # XXX Hope stash is already going to be saved. |
| 508 | $init->add(sprintf("SvSTASH(s\\_%x) = s\\_%x;", $$sv, $$stash)); |
| 509 | } |
| 510 | my @mgchain = $sv->MAGIC; |
| 511 | my ($mg, $type, $obj, $ptr); |
| 512 | foreach $mg (@mgchain) { |
| 513 | $type = $mg->TYPE; |
| 514 | $obj = $mg->OBJ; |
| 515 | $ptr = $mg->PTR; |
| 516 | my $len = defined($ptr) ? length($ptr) : 0; |
| 517 | if ($debug_mg) { |
| 518 | warn sprintf("magic %s (0x%x), obj %s (0x%x), type %s, ptr %s\n", |
| 519 | class($sv), $$sv, class($obj), $$obj, |
| 520 | cchar($type), cstring($ptr)); |
| 521 | } |
| 522 | $init->add(sprintf("sv_magic((SV*)s\\_%x, (SV*)s\\_%x, %s, %s, %d);", |
| 523 | $$sv, $$obj, cchar($type),cstring($ptr),$len)); |
| 524 | } |
| 525 | } |
| 526 | |
| 527 | sub B::RV::save { |
| 528 | my ($sv) = @_; |
| 529 | my $sym = objsym($sv); |
| 530 | return $sym if defined $sym; |
| 66a2622e |
531 | my $rv = $sv->RV->save; |
| 532 | $rv =~ s/^\([AGHS]V\s*\*\)\s*(\&sv_list.*)$/$1/; |
| 533 | $xrvsect->add($rv); |
| a798dbf2 |
534 | $svsect->add(sprintf("&xrv_list[%d], %lu, 0x%x", |
| 535 | $xrvsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
| 536 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 537 | } |
| 538 | |
| 539 | sub try_autoload { |
| 540 | my ($cvstashname, $cvname) = @_; |
| 541 | warn sprintf("No definition for sub %s::%s\n", $cvstashname, $cvname); |
| 542 | # Handle AutoLoader classes explicitly. Any more general AUTOLOAD |
| 543 | # use should be handled by the class itself. |
| 544 | no strict 'refs'; |
| 545 | my $isa = \@{"$cvstashname\::ISA"}; |
| 546 | if (grep($_ eq "AutoLoader", @$isa)) { |
| 547 | warn "Forcing immediate load of sub derived from AutoLoader\n"; |
| 548 | # Tweaked version of AutoLoader::AUTOLOAD |
| 549 | my $dir = $cvstashname; |
| 550 | $dir =~ s(::)(/)g; |
| 551 | eval { require "auto/$dir/$cvname.al" }; |
| 552 | if ($@) { |
| 553 | warn qq(failed require "auto/$dir/$cvname.al": $@\n); |
| 554 | return 0; |
| 555 | } else { |
| 556 | return 1; |
| 557 | } |
| 558 | } |
| 559 | } |
| 560 | |
| 561 | sub B::CV::save { |
| 562 | my ($cv) = @_; |
| 563 | my $sym = objsym($cv); |
| 564 | if (defined($sym)) { |
| 565 | # warn sprintf("CV 0x%x already saved as $sym\n", $$cv); # debug |
| 566 | return $sym; |
| 567 | } |
| 568 | # Reserve a place in svsect and xpvcvsect and record indices |
| 569 | my $sv_ix = $svsect->index + 1; |
| 570 | $svsect->add("svix$sv_ix"); |
| 571 | my $xpvcv_ix = $xpvcvsect->index + 1; |
| 572 | $xpvcvsect->add("xpvcvix$xpvcv_ix"); |
| 573 | # Save symbol now so that GvCV() doesn't recurse back to us via CvGV() |
| 574 | $sym = savesym($cv, "&sv_list[$sv_ix]"); |
| 575 | warn sprintf("saving CV 0x%x as $sym\n", $$cv) if $debug_cv; |
| 576 | my $gv = $cv->GV; |
| 577 | my $cvstashname = $gv->STASH->NAME; |
| 578 | my $cvname = $gv->NAME; |
| 579 | my $root = $cv->ROOT; |
| 580 | my $cvxsub = $cv->XSUB; |
| 581 | if (!$$root && !$cvxsub) { |
| 582 | if (try_autoload($cvstashname, $cvname)) { |
| 583 | # Recalculate root and xsub |
| 584 | $root = $cv->ROOT; |
| 585 | $cvxsub = $cv->XSUB; |
| 586 | if ($$root || $cvxsub) { |
| 587 | warn "Successful forced autoload\n"; |
| 588 | } |
| 589 | } |
| 590 | } |
| 591 | my $startfield = 0; |
| 592 | my $padlist = $cv->PADLIST; |
| 593 | my $pv = $cv->PV; |
| 594 | my $xsub = 0; |
| 595 | my $xsubany = "Nullany"; |
| 596 | if ($$root) { |
| 597 | warn sprintf("saving op tree for CV 0x%x, root = 0x%x\n", |
| 598 | $$cv, $$root) if $debug_cv; |
| 599 | my $ppname = ""; |
| 600 | if ($$gv) { |
| 601 | my $stashname = $gv->STASH->NAME; |
| 602 | my $gvname = $gv->NAME; |
| 603 | if ($gvname ne "__ANON__") { |
| 604 | $ppname = (${$gv->FORM} == $$cv) ? "pp_form_" : "pp_sub_"; |
| 605 | $ppname .= ($stashname eq "main") ? |
| 606 | $gvname : "$stashname\::$gvname"; |
| 607 | $ppname =~ s/::/__/g; |
| 44887cfa |
608 | if ($gvname eq "INIT"){ |
| 609 | $ppname .= "_$initsub_index"; |
| 610 | $initsub_index++; |
| 611 | } |
| a798dbf2 |
612 | } |
| 613 | } |
| 614 | if (!$ppname) { |
| 615 | $ppname = "pp_anonsub_$anonsub_index"; |
| 616 | $anonsub_index++; |
| 617 | } |
| 618 | $startfield = saveoptree($ppname, $root, $cv->START, $padlist->ARRAY); |
| 619 | warn sprintf("done saving op tree for CV 0x%x, name %s, root 0x%x\n", |
| 620 | $$cv, $ppname, $$root) if $debug_cv; |
| 621 | if ($$padlist) { |
| 622 | warn sprintf("saving PADLIST 0x%x for CV 0x%x\n", |
| 623 | $$padlist, $$cv) if $debug_cv; |
| 624 | $padlist->save; |
| 625 | warn sprintf("done saving PADLIST 0x%x for CV 0x%x\n", |
| 626 | $$padlist, $$cv) if $debug_cv; |
| 627 | } |
| 628 | } |
| 629 | elsif ($cvxsub) { |
| 630 | $xsubany = sprintf("ANYINIT((void*)0x%x)", $cv->XSUBANY); |
| 631 | # Try to find out canonical name of XSUB function from EGV. |
| 632 | # XXX Doesn't work for XSUBs with PREFIX set (or anyone who |
| 633 | # calls newXS() manually with weird arguments). |
| 634 | my $egv = $gv->EGV; |
| 635 | my $stashname = $egv->STASH->NAME; |
| 636 | $stashname =~ s/::/__/g; |
| 637 | $xsub = sprintf("XS_%s_%s", $stashname, $egv->NAME); |
| 638 | $decl->add("void $xsub _((CV*));"); |
| 639 | } |
| 640 | else { |
| 641 | warn sprintf("No definition for sub %s::%s (unable to autoload)\n", |
| 642 | $cvstashname, $cvname); # debug |
| 66a2622e |
643 | } |
| 644 | $pv = '' unless defined $pv; # Avoid use of undef warnings |
| 5cfd8ad4 |
645 | $symsect->add(sprintf("xpvcvix%d\t%s, %u, 0, %d, %s, 0, Nullhv, Nullhv, %s, s\\_%x, $xsub, $xsubany, Nullgv, Nullgv, %d, s\\_%x, (CV*)s\\_%x, 0x%x", |
| a798dbf2 |
646 | $xpvcv_ix, cstring($pv), length($pv), $cv->IVX, |
| 647 | $cv->NVX, $startfield, ${$cv->ROOT}, $cv->DEPTH, |
| 5cfd8ad4 |
648 | $$padlist, ${$cv->OUTSIDE}, $cv->CvFLAGS)); |
| 649 | |
| 650 | if (${$cv->OUTSIDE} == ${main_cv()}){ |
| 651 | $init->add(sprintf("CvOUTSIDE(s\\_%x)=PL_main_cv;",$$cv)); |
| 652 | } |
| 653 | |
| a798dbf2 |
654 | if ($$gv) { |
| 655 | $gv->save; |
| 656 | $init->add(sprintf("CvGV(s\\_%x) = s\\_%x;",$$cv,$$gv)); |
| 657 | warn sprintf("done saving GV 0x%x for CV 0x%x\n", |
| 658 | $$gv, $$cv) if $debug_cv; |
| 659 | } |
| 660 | my $filegv = $cv->FILEGV; |
| 661 | if ($$filegv) { |
| 662 | $filegv->save; |
| 663 | $init->add(sprintf("CvFILEGV(s\\_%x) = s\\_%x;", $$cv, $$filegv)); |
| 664 | warn sprintf("done saving FILEGV 0x%x for CV 0x%x\n", |
| 665 | $$filegv, $$cv) if $debug_cv; |
| 666 | } |
| 667 | my $stash = $cv->STASH; |
| 668 | if ($$stash) { |
| 669 | $stash->save; |
| 670 | $init->add(sprintf("CvSTASH(s\\_%x) = s\\_%x;", $$cv, $$stash)); |
| 671 | warn sprintf("done saving STASH 0x%x for CV 0x%x\n", |
| 672 | $$stash, $$cv) if $debug_cv; |
| 673 | } |
| 674 | $symsect->add(sprintf("svix%d\t(XPVCV*)&xpvcv_list[%u], %lu, 0x%x", |
| 675 | $sv_ix, $xpvcv_ix, $cv->REFCNT + 1, $cv->FLAGS)); |
| 676 | return $sym; |
| 677 | } |
| 678 | |
| 679 | sub B::GV::save { |
| 680 | my ($gv) = @_; |
| 681 | my $sym = objsym($gv); |
| 682 | if (defined($sym)) { |
| 683 | #warn sprintf("GV 0x%x already saved as $sym\n", $$gv); # debug |
| 684 | return $sym; |
| 685 | } else { |
| 686 | my $ix = $gv_index++; |
| 687 | $sym = savesym($gv, "gv_list[$ix]"); |
| 688 | #warn sprintf("Saving GV 0x%x as $sym\n", $$gv); # debug |
| 689 | } |
| 690 | my $gvname = $gv->NAME; |
| 691 | my $name = cstring($gv->STASH->NAME . "::" . $gvname); |
| 692 | #warn "GV name is $name\n"; # debug |
| 693 | my $egv = $gv->EGV; |
| 694 | my $egvsym; |
| 695 | if ($$gv != $$egv) { |
| 696 | #warn(sprintf("EGV name is %s, saving it now\n", |
| 697 | # $egv->STASH->NAME . "::" . $egv->NAME)); # debug |
| 698 | $egvsym = $egv->save; |
| 699 | } |
| 700 | $init->add(qq[$sym = gv_fetchpv($name, TRUE, SVt_PV);], |
| 701 | sprintf("SvFLAGS($sym) = 0x%x;", $gv->FLAGS), |
| 702 | sprintf("GvFLAGS($sym) = 0x%x;", $gv->GvFLAGS), |
| 703 | sprintf("GvLINE($sym) = %u;", $gv->LINE)); |
| 704 | # Shouldn't need to do save_magic since gv_fetchpv handles that |
| 705 | #$gv->save_magic; |
| 706 | my $refcnt = $gv->REFCNT + 1; |
| 707 | $init->add(sprintf("SvREFCNT($sym) += %u;", $refcnt - 1)) if $refcnt > 1; |
| 708 | my $gvrefcnt = $gv->GvREFCNT; |
| 709 | if ($gvrefcnt > 1) { |
| 710 | $init->add(sprintf("GvREFCNT($sym) += %u;", $gvrefcnt - 1)); |
| 711 | } |
| 712 | if (defined($egvsym)) { |
| 713 | # Shared glob *foo = *bar |
| 714 | $init->add("gp_free($sym);", |
| 715 | "GvGP($sym) = GvGP($egvsym);"); |
| 716 | } elsif ($gvname !~ /^([^A-Za-z]|STDIN|STDOUT|STDERR|ARGV|SIG|ENV)$/) { |
| 717 | # Don't save subfields of special GVs (*_, *1, *# and so on) |
| 718 | # warn "GV::save saving subfields\n"; # debug |
| 719 | my $gvsv = $gv->SV; |
| 720 | if ($$gvsv) { |
| 721 | $init->add(sprintf("GvSV($sym) = s\\_%x;", $$gvsv)); |
| 722 | # warn "GV::save \$$name\n"; # debug |
| 723 | $gvsv->save; |
| 724 | } |
| 725 | my $gvav = $gv->AV; |
| 726 | if ($$gvav) { |
| 727 | $init->add(sprintf("GvAV($sym) = s\\_%x;", $$gvav)); |
| 728 | # warn "GV::save \@$name\n"; # debug |
| 729 | $gvav->save; |
| 730 | } |
| 731 | my $gvhv = $gv->HV; |
| 732 | if ($$gvhv) { |
| 733 | $init->add(sprintf("GvHV($sym) = s\\_%x;", $$gvhv)); |
| 734 | # warn "GV::save \%$name\n"; # debug |
| 735 | $gvhv->save; |
| 736 | } |
| 737 | my $gvcv = $gv->CV; |
| 738 | if ($$gvcv) { |
| 739 | $init->add(sprintf("GvCV($sym) = (CV*)s\\_%x;", $$gvcv)); |
| 740 | # warn "GV::save &$name\n"; # debug |
| 741 | $gvcv->save; |
| 742 | } |
| 743 | my $gvfilegv = $gv->FILEGV; |
| 744 | if ($$gvfilegv) { |
| 5ed82aed |
745 | $init->add(sprintf("GvFILEGV($sym) = (GV*)s\\_%x;",$$gvfilegv)); |
| a798dbf2 |
746 | # warn "GV::save GvFILEGV(*$name)\n"; # debug |
| 747 | $gvfilegv->save; |
| 748 | } |
| 749 | my $gvform = $gv->FORM; |
| 750 | if ($$gvform) { |
| 751 | $init->add(sprintf("GvFORM($sym) = (CV*)s\\_%x;", $$gvform)); |
| 752 | # warn "GV::save GvFORM(*$name)\n"; # debug |
| 753 | $gvform->save; |
| 754 | } |
| 755 | my $gvio = $gv->IO; |
| 756 | if ($$gvio) { |
| 757 | $init->add(sprintf("GvIOp($sym) = s\\_%x;", $$gvio)); |
| 758 | # warn "GV::save GvIO(*$name)\n"; # debug |
| 759 | $gvio->save; |
| 760 | } |
| 761 | } |
| 762 | return $sym; |
| 763 | } |
| 764 | sub B::AV::save { |
| 765 | my ($av) = @_; |
| 766 | my $sym = objsym($av); |
| 767 | return $sym if defined $sym; |
| 768 | my $avflags = $av->AvFLAGS; |
| 769 | $xpvavsect->add(sprintf("0, -1, -1, 0, 0.0, 0, Nullhv, 0, 0, 0x%x", |
| 770 | $avflags)); |
| 771 | $svsect->add(sprintf("&xpvav_list[%d], %lu, 0x%x", |
| 772 | $xpvavsect->index, $av->REFCNT + 1, $av->FLAGS)); |
| 773 | my $sv_list_index = $svsect->index; |
| 774 | my $fill = $av->FILL; |
| 775 | $av->save_magic; |
| 776 | warn sprintf("saving AV 0x%x FILL=$fill AvFLAGS=0x%x", $$av, $avflags) |
| 777 | if $debug_av; |
| 778 | # XXX AVf_REAL is wrong test: need to save comppadlist but not stack |
| 779 | #if ($fill > -1 && ($avflags & AVf_REAL)) { |
| 780 | if ($fill > -1) { |
| 781 | my @array = $av->ARRAY; |
| 782 | if ($debug_av) { |
| 783 | my $el; |
| 784 | my $i = 0; |
| 785 | foreach $el (@array) { |
| 786 | warn sprintf("AV 0x%x[%d] = %s 0x%x\n", |
| 787 | $$av, $i++, class($el), $$el); |
| 788 | } |
| 789 | } |
| 790 | my @names = map($_->save, @array); |
| 791 | # XXX Better ways to write loop? |
| 792 | # Perhaps svp[0] = ...; svp[1] = ...; svp[2] = ...; |
| 793 | # Perhaps I32 i = 0; svp[i++] = ...; svp[i++] = ...; svp[i++] = ...; |
| 794 | $init->add("{", |
| 795 | "\tSV **svp;", |
| 796 | "\tAV *av = (AV*)&sv_list[$sv_list_index];", |
| 797 | "\tav_extend(av, $fill);", |
| 798 | "\tsvp = AvARRAY(av);", |
| 799 | map("\t*svp++ = (SV*)$_;", @names), |
| 800 | "\tAvFILLp(av) = $fill;", |
| 801 | "}"); |
| 802 | } else { |
| 803 | my $max = $av->MAX; |
| 804 | $init->add("av_extend((AV*)&sv_list[$sv_list_index], $max);") |
| 805 | if $max > -1; |
| 806 | } |
| 807 | return savesym($av, "(AV*)&sv_list[$sv_list_index]"); |
| 808 | } |
| 809 | |
| 810 | sub B::HV::save { |
| 811 | my ($hv) = @_; |
| 812 | my $sym = objsym($hv); |
| 813 | return $sym if defined $sym; |
| 814 | my $name = $hv->NAME; |
| 815 | if ($name) { |
| 816 | # It's a stash |
| 817 | |
| 818 | # A perl bug means HvPMROOT isn't altered when a PMOP is freed. Usually |
| 819 | # the only symptom is that sv_reset tries to reset the PMf_USED flag of |
| 820 | # a trashed op but we look at the trashed op_type and segfault. |
| 821 | #my $adpmroot = ${$hv->PMROOT}; |
| 822 | my $adpmroot = 0; |
| 823 | $decl->add("static HV *hv$hv_index;"); |
| 824 | # XXX Beware of weird package names containing double-quotes, \n, ...? |
| 825 | $init->add(qq[hv$hv_index = gv_stashpv("$name", TRUE);]); |
| 826 | if ($adpmroot) { |
| 827 | $init->add(sprintf("HvPMROOT(hv$hv_index) = (PMOP*)s\\_%x;", |
| 828 | $adpmroot)); |
| 829 | } |
| 830 | $sym = savesym($hv, "hv$hv_index"); |
| 831 | $hv_index++; |
| 832 | return $sym; |
| 833 | } |
| 834 | # It's just an ordinary HV |
| 835 | $xpvhvsect->add(sprintf("0, 0, %d, 0, 0.0, 0, Nullhv, %d, 0, 0, 0", |
| 836 | $hv->MAX, $hv->RITER)); |
| 837 | $svsect->add(sprintf("&xpvhv_list[%d], %lu, 0x%x", |
| 838 | $xpvhvsect->index, $hv->REFCNT + 1, $hv->FLAGS)); |
| 839 | my $sv_list_index = $svsect->index; |
| 840 | my @contents = $hv->ARRAY; |
| 841 | if (@contents) { |
| 842 | my $i; |
| 843 | for ($i = 1; $i < @contents; $i += 2) { |
| 844 | $contents[$i] = $contents[$i]->save; |
| 845 | } |
| 846 | $init->add("{", "\tHV *hv = (HV*)&sv_list[$sv_list_index];"); |
| 847 | while (@contents) { |
| 848 | my ($key, $value) = splice(@contents, 0, 2); |
| 849 | $init->add(sprintf("\thv_store(hv, %s, %u, %s, %s);", |
| 850 | cstring($key),length($key),$value, hash($key))); |
| cf86991c |
851 | # $init->add(sprintf("\thv_store(hv, %s, %u, %s, %s);", |
| 852 | # cstring($key),length($key),$value, 0)); |
| a798dbf2 |
853 | } |
| 854 | $init->add("}"); |
| 855 | } |
| 856 | return savesym($hv, "(HV*)&sv_list[$sv_list_index]"); |
| 857 | } |
| 858 | |
| 859 | sub B::IO::save { |
| 860 | my ($io) = @_; |
| 861 | my $sym = objsym($io); |
| 862 | return $sym if defined $sym; |
| 863 | my $pv = $io->PV; |
| 66a2622e |
864 | $pv = '' unless defined $pv; |
| a798dbf2 |
865 | my $len = length($pv); |
| 866 | $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", |
| 867 | $len, $len+1, $io->IVX, $io->NVX, $io->LINES, |
| 868 | $io->PAGE, $io->PAGE_LEN, $io->LINES_LEFT, |
| 869 | cstring($io->TOP_NAME), cstring($io->FMT_NAME), |
| 870 | cstring($io->BOTTOM_NAME), $io->SUBPROCESS, |
| 871 | cchar($io->IoTYPE), $io->IoFLAGS)); |
| 872 | $svsect->add(sprintf("&xpvio_list[%d], %lu, 0x%x", |
| 873 | $xpviosect->index, $io->REFCNT + 1, $io->FLAGS)); |
| 874 | $sym = savesym($io, sprintf("(IO*)&sv_list[%d]", $svsect->index)); |
| 875 | my ($field, $fsym); |
| 876 | foreach $field (qw(TOP_GV FMT_GV BOTTOM_GV)) { |
| 877 | $fsym = $io->$field(); |
| 878 | if ($$fsym) { |
| 879 | $init->add(sprintf("Io$field($sym) = (GV*)s\\_%x;", $$fsym)); |
| 880 | $fsym->save; |
| 881 | } |
| 882 | } |
| 883 | $io->save_magic; |
| 884 | return $sym; |
| 885 | } |
| 886 | |
| 887 | sub B::SV::save { |
| 888 | my $sv = shift; |
| 889 | # This is where we catch an honest-to-goodness Nullsv (which gets |
| 890 | # blessed into B::SV explicitly) and any stray erroneous SVs. |
| 891 | return 0 unless $$sv; |
| 892 | confess sprintf("cannot save that type of SV: %s (0x%x)\n", |
| 893 | class($sv), $$sv); |
| 894 | } |
| 895 | |
| 896 | sub output_all { |
| 897 | my $init_name = shift; |
| 898 | my $section; |
| 899 | my @sections = ($opsect, $unopsect, $binopsect, $logopsect, $condopsect, |
| 900 | $listopsect, $pmopsect, $svopsect, $gvopsect, $pvopsect, |
| 66a2622e |
901 | $loopsect, $copsect, $svsect, $xpvsect, |
| a798dbf2 |
902 | $xpvavsect, $xpvhvsect, $xpvcvsect, $xpvivsect, $xpvnvsect, |
| 903 | $xpvmgsect, $xpvlvsect, $xrvsect, $xpvbmsect, $xpviosect); |
| 31d7d75a |
904 | $bootstrap->output(\*STDOUT, "/* bootstrap %s */\n"); |
| a798dbf2 |
905 | $symsect->output(\*STDOUT, "#define %s\n"); |
| 906 | print "\n"; |
| 907 | output_declarations(); |
| 908 | foreach $section (@sections) { |
| 909 | my $lines = $section->index + 1; |
| 910 | if ($lines) { |
| 911 | my $name = $section->name; |
| 912 | my $typename = ($name eq "xpvcv") ? "XPVCV_or_similar" : uc($name); |
| 913 | print "Static $typename ${name}_list[$lines];\n"; |
| 914 | } |
| 915 | } |
| 916 | $decl->output(\*STDOUT, "%s\n"); |
| 917 | print "\n"; |
| 918 | foreach $section (@sections) { |
| 919 | my $lines = $section->index + 1; |
| 920 | if ($lines) { |
| 921 | my $name = $section->name; |
| 922 | my $typename = ($name eq "xpvcv") ? "XPVCV_or_similar" : uc($name); |
| 923 | printf "static %s %s_list[%u] = {\n", $typename, $name, $lines; |
| 924 | $section->output(\*STDOUT, "\t{ %s },\n"); |
| 925 | print "};\n\n"; |
| 926 | } |
| 927 | } |
| 928 | |
| 929 | print <<"EOT"; |
| 930 | static int $init_name() |
| 931 | { |
| 932 | dTHR; |
| 933 | EOT |
| 934 | $init->output(\*STDOUT, "\t%s\n"); |
| 935 | print "\treturn 0;\n}\n"; |
| 936 | if ($verbose) { |
| 937 | warn compile_stats(); |
| 938 | warn "NULLOP count: $nullop_count\n"; |
| 939 | } |
| 940 | } |
| 941 | |
| 942 | sub output_declarations { |
| 943 | print <<'EOT'; |
| 944 | #ifdef BROKEN_STATIC_REDECL |
| 945 | #define Static extern |
| 946 | #else |
| 947 | #define Static static |
| 948 | #endif /* BROKEN_STATIC_REDECL */ |
| 949 | |
| 950 | #ifdef BROKEN_UNION_INIT |
| 951 | /* |
| 952 | * Cribbed from cv.h with ANY (a union) replaced by void*. |
| 953 | * Some pre-Standard compilers can't cope with initialising unions. Ho hum. |
| 954 | */ |
| 955 | typedef struct { |
| 956 | char * xpv_pv; /* pointer to malloced string */ |
| 957 | STRLEN xpv_cur; /* length of xp_pv as a C string */ |
| 958 | STRLEN xpv_len; /* allocated size */ |
| 959 | IV xof_off; /* integer value */ |
| 960 | double xnv_nv; /* numeric value, if any */ |
| 961 | MAGIC* xmg_magic; /* magic for scalar array */ |
| 962 | HV* xmg_stash; /* class package */ |
| 963 | |
| 964 | HV * xcv_stash; |
| 965 | OP * xcv_start; |
| 966 | OP * xcv_root; |
| 967 | void (*xcv_xsub) _((CV*)); |
| 968 | void * xcv_xsubany; |
| 969 | GV * xcv_gv; |
| 970 | GV * xcv_filegv; |
| 971 | long xcv_depth; /* >= 2 indicates recursive call */ |
| 972 | AV * xcv_padlist; |
| 973 | CV * xcv_outside; |
| 974 | #ifdef USE_THREADS |
| 975 | perl_mutex *xcv_mutexp; |
| 976 | struct perl_thread *xcv_owner; /* current owner thread */ |
| 977 | #endif /* USE_THREADS */ |
| 978 | U8 xcv_flags; |
| 979 | } XPVCV_or_similar; |
| 980 | #define ANYINIT(i) i |
| 981 | #else |
| 982 | #define XPVCV_or_similar XPVCV |
| 983 | #define ANYINIT(i) {i} |
| 984 | #endif /* BROKEN_UNION_INIT */ |
| 985 | #define Nullany ANYINIT(0) |
| 986 | |
| 987 | #define UNUSED 0 |
| 988 | #define sym_0 0 |
| 989 | |
| 990 | EOT |
| 991 | print "static GV *gv_list[$gv_index];\n" if $gv_index; |
| 992 | print "\n"; |
| 993 | } |
| 994 | |
| 995 | |
| 996 | sub output_boilerplate { |
| 997 | print <<'EOT'; |
| 998 | #include "EXTERN.h" |
| 999 | #include "perl.h" |
| 1000 | #ifndef PATCHLEVEL |
| 1001 | #include "patchlevel.h" |
| 1002 | #endif |
| 1003 | |
| 1004 | /* Workaround for mapstart: the only op which needs a different ppaddr */ |
| 1005 | #undef pp_mapstart |
| 1006 | #define pp_mapstart pp_grepstart |
| 1007 | |
| 1008 | static void xs_init _((void)); |
| 1009 | static PerlInterpreter *my_perl; |
| 1010 | EOT |
| 1011 | } |
| 1012 | |
| 1013 | sub output_main { |
| 1014 | print <<'EOT'; |
| 1015 | int |
| 1016 | #ifndef CAN_PROTOTYPE |
| 1017 | main(argc, argv, env) |
| 1018 | int argc; |
| 1019 | char **argv; |
| 1020 | char **env; |
| 1021 | #else /* def(CAN_PROTOTYPE) */ |
| 1022 | main(int argc, char **argv, char **env) |
| 1023 | #endif /* def(CAN_PROTOTYPE) */ |
| 1024 | { |
| 1025 | int exitstatus; |
| 1026 | int i; |
| 1027 | char **fakeargv; |
| 1028 | |
| 1029 | PERL_SYS_INIT(&argc,&argv); |
| 1030 | |
| 1031 | perl_init_i18nl10n(1); |
| 1032 | |
| 81009501 |
1033 | if (!PL_do_undump) { |
| a798dbf2 |
1034 | my_perl = perl_alloc(); |
| 1035 | if (!my_perl) |
| 1036 | exit(1); |
| 1037 | perl_construct( my_perl ); |
| 1038 | } |
| 1039 | |
| 1040 | #ifdef CSH |
| 81009501 |
1041 | if (!PL_cshlen) |
| 1042 | PL_cshlen = strlen(PL_cshname); |
| a798dbf2 |
1043 | #endif |
| 1044 | |
| 1045 | #ifdef ALLOW_PERL_OPTIONS |
| 1046 | #define EXTRA_OPTIONS 2 |
| 1047 | #else |
| 1048 | #define EXTRA_OPTIONS 3 |
| 1049 | #endif /* ALLOW_PERL_OPTIONS */ |
| 1050 | New(666, fakeargv, argc + EXTRA_OPTIONS + 1, char *); |
| 1051 | fakeargv[0] = argv[0]; |
| 1052 | fakeargv[1] = "-e"; |
| 1053 | fakeargv[2] = ""; |
| 1054 | #ifndef ALLOW_PERL_OPTIONS |
| 1055 | fakeargv[3] = "--"; |
| 1056 | #endif /* ALLOW_PERL_OPTIONS */ |
| 1057 | for (i = 1; i < argc; i++) |
| 1058 | fakeargv[i + EXTRA_OPTIONS] = argv[i]; |
| 1059 | fakeargv[argc + EXTRA_OPTIONS] = 0; |
| 1060 | |
| 1061 | exitstatus = perl_parse(my_perl, xs_init, argc + EXTRA_OPTIONS, |
| 1062 | fakeargv, NULL); |
| 1063 | if (exitstatus) |
| 1064 | exit( exitstatus ); |
| 1065 | |
| 1066 | sv_setpv(GvSV(gv_fetchpv("0", TRUE, SVt_PV)), argv[0]); |
| 81009501 |
1067 | PL_main_cv = PL_compcv; |
| 1068 | PL_compcv = 0; |
| a798dbf2 |
1069 | |
| 1070 | exitstatus = perl_init(); |
| 1071 | if (exitstatus) |
| 1072 | exit( exitstatus ); |
| 1073 | |
| 1074 | exitstatus = perl_run( my_perl ); |
| 1075 | |
| 1076 | perl_destruct( my_perl ); |
| 1077 | perl_free( my_perl ); |
| 1078 | |
| 1079 | exit( exitstatus ); |
| 1080 | } |
| 1081 | |
| 1082 | static void |
| 1083 | xs_init() |
| 1084 | { |
| 1085 | } |
| 1086 | EOT |
| 1087 | } |
| 1088 | |
| 1089 | sub dump_symtable { |
| 1090 | # For debugging |
| 1091 | my ($sym, $val); |
| 1092 | warn "----Symbol table:\n"; |
| 1093 | while (($sym, $val) = each %symtable) { |
| 1094 | warn "$sym => $val\n"; |
| 1095 | } |
| 1096 | warn "---End of symbol table\n"; |
| 1097 | } |
| 1098 | |
| 1099 | sub save_object { |
| 1100 | my $sv; |
| 1101 | foreach $sv (@_) { |
| 1102 | svref_2object($sv)->save; |
| 1103 | } |
| 338a6d08 |
1104 | } |
| 1105 | |
| 1106 | sub Dummy_BootStrap { } |
| a798dbf2 |
1107 | |
| 66a2622e |
1108 | sub B::GV::savecv |
| 1109 | { |
| 1110 | my $gv = shift; |
| 1111 | my $package=$gv->STASH->NAME; |
| 1112 | my $name = $gv->NAME; |
| 1113 | my $cv = $gv->CV; |
| 1114 | return unless ($$cv || $name eq 'ISA'); |
| 1115 | # We may be looking at this package just because it is a branch in the |
| 1116 | # symbol table which is on the path to a package which we need to save |
| 1117 | # e.g. this is 'Getopt' and wee need to save 'Getopt::Long' |
| 1118 | # |
| 1119 | if ($$cv && $name eq "bootstrap" && $cv->XSUB) |
| 1120 | { |
| 1121 | my $file = $cv->FILEGV->SV->PV; |
| 1122 | $bootstrap->add($file); |
| 1123 | } |
| 1124 | unless ($unused_sub_packages{$package}) |
| 1125 | { |
| 1126 | warn sprintf("omitting cv $name in %s\n", $package) if $$cv; # if $debug_cv; |
| 1127 | return ; |
| 1128 | } |
| 1129 | if ($$cv) |
| 1130 | { |
| 1131 | if ($name eq "bootstrap" && $cv->XSUB) |
| 1132 | { |
| 1133 | my $name = $gv->STASH->NAME.'::'.$name; |
| 1134 | no strict 'refs'; |
| 1135 | *{$name} = \&Dummy_BootStrap; |
| 1136 | $cv = $gv->CV; |
| a798dbf2 |
1137 | } |
| 66a2622e |
1138 | warn sprintf("saving extra CV &%s::%s (0x%x) from GV 0x%x\n", |
| 1139 | $package, $name, $$cv, $$gv) if ($debug_cv); |
| 1140 | $gv->save; |
| 1141 | } |
| 1142 | elsif ($name eq 'ISA') |
| 1143 | { |
| 1144 | $gv->save; |
| 1145 | } |
| 1146 | } |
| 5ed82aed |
1147 | |
| 66a2622e |
1148 | sub mark_package |
| 1149 | { |
| 1150 | my $package = shift; |
| 1151 | unless ($unused_sub_packages{$package}) |
| 1152 | { |
| 1153 | no strict 'refs'; |
| 1154 | $unused_sub_packages{$package} = 1; |
| 1155 | if (defined(@{$package.'::ISA'})) |
| 1156 | { |
| 1157 | foreach my $isa (@{$package.'::ISA'}) |
| 1158 | { |
| 1159 | if ($isa eq 'DynaLoader') |
| 1160 | { |
| 1161 | unless (defined(&{$package.'::bootstrap'})) |
| 1162 | { |
| 1163 | warn "Forcing bootstrap of $package\n"; |
| 1164 | eval { $package->bootstrap }; |
| 1165 | } |
| 1166 | } |
| 1167 | else |
| 1168 | { |
| 1169 | unless ($unused_sub_packages{$isa}) |
| 1170 | { |
| 1171 | warn "$isa saved (it is in $package\'s \@ISA)\n"; |
| 1172 | mark_package($isa); |
| 1173 | } |
| 1174 | } |
| 1175 | } |
| 1176 | } |
| 1177 | } |
| 1178 | return 1; |
| 1179 | } |
| 1180 | |
| 1181 | sub should_save |
| 1182 | { |
| 1183 | no strict qw(vars refs); |
| 1184 | my $package = shift; |
| 1185 | $package =~ s/::$//; |
| 1186 | return $unused_sub_packages{$package} = 0 if ($package =~ /::::/); # skip ::::ISA::CACHE etc. |
| cf86991c |
1187 | # warn "Considering $package\n";#debug |
| 66a2622e |
1188 | foreach my $u (grep($unused_sub_packages{$_},keys %unused_sub_packages)) |
| 1189 | { |
| 1190 | # If this package is a prefix to something we are saving, traverse it |
| 1191 | # but do not mark it for saving if it is not already |
| 1192 | # e.g. to get to Getopt::Long we need to traverse Getopt but need |
| 1193 | # not save Getopt |
| 1194 | return 1 if ($u =~ /^$package\:\:/); |
| 1195 | } |
| 1196 | if (exists $unused_sub_packages{$package}) |
| 1197 | { |
| cf86991c |
1198 | # warn "Cached $package is ".$unused_sub_packages{$package}."\n"; |
| 66a2622e |
1199 | return $unused_sub_packages{$package} |
| 1200 | } |
| 1201 | # Omit the packages which we use (and which cause grief |
| 1202 | # because of fancy "goto &$AUTOLOAD" stuff). |
| 1203 | # XXX Surely there must be a nicer way to do this. |
| 1204 | if ($package eq "FileHandle" || $package eq "Config" || |
| cf86991c |
1205 | $package eq "SelectSaver" || $package =~/^(B|IO)::/) |
| 66a2622e |
1206 | { |
| 1207 | return $unused_sub_packages{$package} = 0; |
| 1208 | } |
| 1209 | # Now see if current package looks like an OO class this is probably too strong. |
| 1210 | foreach my $m (qw(new DESTROY TIESCALAR TIEARRAY TIEHASH TIEHANDLE)) |
| 1211 | { |
| 1212 | if ($package->can($m)) |
| 1213 | { |
| 1214 | warn "$package has method $m: saving package\n";#debug |
| 1215 | return mark_package($package); |
| 1216 | } |
| 1217 | } |
| 1218 | return $unused_sub_packages{$package} = 0; |
| a798dbf2 |
1219 | } |
| 1220 | |
| 66a2622e |
1221 | sub walkpackages |
| 1222 | { |
| 1223 | my ($symref, $recurse, $prefix) = @_; |
| 1224 | my $sym; |
| 1225 | my $ref; |
| 1226 | no strict 'vars'; |
| 1227 | local(*glob); |
| 1228 | $prefix = '' unless defined $prefix; |
| 1229 | while (($sym, $ref) = each %$symref) |
| 1230 | { |
| 1231 | *glob = $ref; |
| 1232 | if ($sym =~ /::$/) |
| 1233 | { |
| 1234 | $sym = $prefix . $sym; |
| 1235 | if ($sym ne "main::" && &$recurse($sym)) |
| 1236 | { |
| 1237 | walkpackages(\%glob, $recurse, $sym); |
| 1238 | } |
| 1239 | } |
| 1240 | } |
| 1241 | } |
| 338a6d08 |
1242 | |
| 1243 | |
| 66a2622e |
1244 | sub save_unused_subs |
| 1245 | { |
| 1246 | no strict qw(refs); |
| 1247 | warn "Prescan\n"; |
| 1248 | walkpackages(\%{"main::"}, sub { should_save($_[0]); return 1 }); |
| 1249 | warn "Saving methods\n"; |
| 1250 | walksymtable(\%{"main::"}, "savecv", \&should_save); |
| a798dbf2 |
1251 | } |
| 1252 | |
| 0cc1d052 |
1253 | sub save_context |
| 1254 | { |
| 1255 | my $curpad_nam = (comppadlist->ARRAY)[0]->save; |
| 1256 | my $curpad_sym = (comppadlist->ARRAY)[1]->save; |
| 1257 | my $inc_hv = svref_2object(\%INC)->save; |
| 1258 | my $inc_av = svref_2object(\@INC)->save; |
| 1259 | $init->add( "PL_curpad = AvARRAY($curpad_sym);", |
| 1260 | "GvHV(PL_incgv) = $inc_hv;", |
| 1261 | "GvAV(PL_incgv) = $inc_av;", |
| 1262 | "av_store(CvPADLIST(PL_main_cv),0,SvREFCNT_inc($curpad_nam));", |
| 1263 | "av_store(CvPADLIST(PL_main_cv),1,SvREFCNT_inc($curpad_sym));"); |
| 1264 | } |
| 1265 | |
| a798dbf2 |
1266 | sub save_main { |
| 66a2622e |
1267 | warn "Starting compile\n"; |
| 1268 | foreach my $pack (keys %unused_sub_packages) |
| 1269 | { |
| 1270 | mark_package($pack); |
| 1271 | } |
| 66a2622e |
1272 | warn "Walking tree\n"; |
| a798dbf2 |
1273 | walkoptree(main_root, "save"); |
| 1274 | warn "done main optree, walking symtable for extras\n" if $debug_cv; |
| 66a2622e |
1275 | save_unused_subs(); |
| 0cc1d052 |
1276 | my $init_av = init_av->save; |
| 81009501 |
1277 | $init->add(sprintf("PL_main_root = s\\_%x;", ${main_root()}), |
| 1278 | sprintf("PL_main_start = s\\_%x;", ${main_start()}), |
| 0cc1d052 |
1279 | "PL_initav = $init_av;"); |
| 1280 | save_context(); |
| 5ed82aed |
1281 | warn "Writing output\n"; |
| a798dbf2 |
1282 | output_boilerplate(); |
| 1283 | print "\n"; |
| 1284 | output_all("perl_init"); |
| 1285 | print "\n"; |
| 1286 | output_main(); |
| 1287 | } |
| 1288 | |
| 1289 | sub init_sections { |
| 1290 | my @sections = (init => \$init, decl => \$decl, sym => \$symsect, |
| 1291 | binop => \$binopsect, condop => \$condopsect, |
| 66a2622e |
1292 | cop => \$copsect, gvop => \$gvopsect, |
| a798dbf2 |
1293 | listop => \$listopsect, logop => \$logopsect, |
| 1294 | loop => \$loopsect, op => \$opsect, pmop => \$pmopsect, |
| 1295 | pvop => \$pvopsect, svop => \$svopsect, unop => \$unopsect, |
| 1296 | sv => \$svsect, xpv => \$xpvsect, xpvav => \$xpvavsect, |
| 1297 | xpvhv => \$xpvhvsect, xpvcv => \$xpvcvsect, |
| 1298 | xpviv => \$xpvivsect, xpvnv => \$xpvnvsect, |
| 1299 | xpvmg => \$xpvmgsect, xpvlv => \$xpvlvsect, |
| 1300 | xrv => \$xrvsect, xpvbm => \$xpvbmsect, |
| 31d7d75a |
1301 | xpvio => \$xpviosect, bootstrap => \$bootstrap); |
| a798dbf2 |
1302 | my ($name, $sectref); |
| 1303 | while (($name, $sectref) = splice(@sections, 0, 2)) { |
| 66a2622e |
1304 | $$sectref = new B::C::Section $name, \%symtable, 0; |
| a798dbf2 |
1305 | } |
| 0cc1d052 |
1306 | } |
| 1307 | |
| 1308 | sub mark_unused |
| 1309 | { |
| 1310 | my ($arg,$val) = @_; |
| 1311 | $unused_sub_packages{$arg} = $val; |
| a798dbf2 |
1312 | } |
| 1313 | |
| 1314 | sub compile { |
| 1315 | my @options = @_; |
| 1316 | my ($option, $opt, $arg); |
| 1317 | OPTION: |
| 1318 | while ($option = shift @options) { |
| 1319 | if ($option =~ /^-(.)(.*)/) { |
| 1320 | $opt = $1; |
| 1321 | $arg = $2; |
| 1322 | } else { |
| 1323 | unshift @options, $option; |
| 1324 | last OPTION; |
| 1325 | } |
| 1326 | if ($opt eq "-" && $arg eq "-") { |
| 1327 | shift @options; |
| 1328 | last OPTION; |
| 1329 | } |
| 1330 | if ($opt eq "w") { |
| 1331 | $warn_undefined_syms = 1; |
| 1332 | } elsif ($opt eq "D") { |
| 1333 | $arg ||= shift @options; |
| 1334 | foreach $arg (split(//, $arg)) { |
| 1335 | if ($arg eq "o") { |
| 1336 | B->debug(1); |
| 1337 | } elsif ($arg eq "c") { |
| 1338 | $debug_cops = 1; |
| 1339 | } elsif ($arg eq "A") { |
| 1340 | $debug_av = 1; |
| 1341 | } elsif ($arg eq "C") { |
| 1342 | $debug_cv = 1; |
| 1343 | } elsif ($arg eq "M") { |
| 1344 | $debug_mg = 1; |
| 1345 | } else { |
| 1346 | warn "ignoring unknown debug option: $arg\n"; |
| 1347 | } |
| 1348 | } |
| 1349 | } elsif ($opt eq "o") { |
| 1350 | $arg ||= shift @options; |
| 1351 | open(STDOUT, ">$arg") or return "$arg: $!\n"; |
| 1352 | } elsif ($opt eq "v") { |
| 1353 | $verbose = 1; |
| 1354 | } elsif ($opt eq "u") { |
| 1355 | $arg ||= shift @options; |
| 0cc1d052 |
1356 | mark_unused($arg,undef); |
| a798dbf2 |
1357 | } elsif ($opt eq "f") { |
| 1358 | $arg ||= shift @options; |
| 1359 | if ($arg eq "cog") { |
| 1360 | $pv_copy_on_grow = 1; |
| 1361 | } elsif ($arg eq "no-cog") { |
| 1362 | $pv_copy_on_grow = 0; |
| 1363 | } |
| 1364 | } elsif ($opt eq "O") { |
| 1365 | $arg = 1 if $arg eq ""; |
| 1366 | $pv_copy_on_grow = 0; |
| 1367 | if ($arg >= 1) { |
| 1368 | # Optimisations for -O1 |
| 1369 | $pv_copy_on_grow = 1; |
| 1370 | } |
| 1371 | } |
| 1372 | } |
| 1373 | init_sections(); |
| 1374 | if (@options) { |
| 1375 | return sub { |
| 1376 | my $objname; |
| 1377 | foreach $objname (@options) { |
| 1378 | eval "save_object(\\$objname)"; |
| 1379 | } |
| 1380 | output_all(); |
| 1381 | } |
| 1382 | } else { |
| 1383 | return sub { save_main() }; |
| 1384 | } |
| 1385 | } |
| 1386 | |
| 1387 | 1; |
| 7f20e9dd |
1388 | |
| 1389 | __END__ |
| 1390 | |
| 1391 | =head1 NAME |
| 1392 | |
| 1393 | B::C - Perl compiler's C backend |
| 1394 | |
| 1395 | =head1 SYNOPSIS |
| 1396 | |
| 1397 | perl -MO=C[,OPTIONS] foo.pl |
| 1398 | |
| 1399 | =head1 DESCRIPTION |
| 1400 | |
| 1a52ab62 |
1401 | This compiler backend takes Perl source and generates C source code |
| 1402 | corresponding to the internal structures that perl uses to run |
| 1403 | your program. When the generated C source is compiled and run, it |
| 1404 | cuts out the time which perl would have taken to load and parse |
| 1405 | your program into its internal semi-compiled form. That means that |
| 1406 | compiling with this backend will not help improve the runtime |
| 1407 | execution speed of your program but may improve the start-up time. |
| 1408 | Depending on the environment in which your program runs this may be |
| 1409 | either a help or a hindrance. |
| 1410 | |
| 1411 | =head1 OPTIONS |
| 1412 | |
| 1413 | If there are any non-option arguments, they are taken to be |
| 1414 | names of objects to be saved (probably doesn't work properly yet). |
| 1415 | Without extra arguments, it saves the main program. |
| 1416 | |
| 1417 | =over 4 |
| 1418 | |
| 1419 | =item B<-ofilename> |
| 1420 | |
| 1421 | Output to filename instead of STDOUT |
| 1422 | |
| 1423 | =item B<-v> |
| 1424 | |
| 1425 | Verbose compilation (currently gives a few compilation statistics). |
| 1426 | |
| 1427 | =item B<--> |
| 1428 | |
| 1429 | Force end of options |
| 1430 | |
| 1431 | =item B<-uPackname> |
| 1432 | |
| 1433 | Force apparently unused subs from package Packname to be compiled. |
| 1434 | This allows programs to use eval "foo()" even when sub foo is never |
| 1435 | seen to be used at compile time. The down side is that any subs which |
| 1436 | really are never used also have code generated. This option is |
| 1437 | necessary, for example, if you have a signal handler foo which you |
| 1438 | initialise with C<$SIG{BAR} = "foo">. A better fix, though, is just |
| 1439 | to change it to C<$SIG{BAR} = \&foo>. You can have multiple B<-u> |
| 1440 | options. The compiler tries to figure out which packages may possibly |
| 1441 | have subs in which need compiling but the current version doesn't do |
| 1442 | it very well. In particular, it is confused by nested packages (i.e. |
| 1443 | of the form C<A::B>) where package C<A> does not contain any subs. |
| 1444 | |
| 1445 | =item B<-D> |
| 1446 | |
| 1447 | Debug options (concatenated or separate flags like C<perl -D>). |
| 1448 | |
| 1449 | =item B<-Do> |
| 1450 | |
| 1451 | OPs, prints each OP as it's processed |
| 1452 | |
| 1453 | =item B<-Dc> |
| 1454 | |
| 1455 | COPs, prints COPs as processed (incl. file & line num) |
| 1456 | |
| 1457 | =item B<-DA> |
| 1458 | |
| 1459 | prints AV information on saving |
| 1460 | |
| 1461 | =item B<-DC> |
| 1462 | |
| 1463 | prints CV information on saving |
| 1464 | |
| 1465 | =item B<-DM> |
| 1466 | |
| 1467 | prints MAGIC information on saving |
| 1468 | |
| 1469 | =item B<-f> |
| 1470 | |
| 1471 | Force optimisations on or off one at a time. |
| 1472 | |
| 1473 | =item B<-fcog> |
| 1474 | |
| 1475 | Copy-on-grow: PVs declared and initialised statically. |
| 1476 | |
| 1477 | =item B<-fno-cog> |
| 1478 | |
| 1479 | No copy-on-grow. |
| 1480 | |
| 1481 | =item B<-On> |
| 1482 | |
| 1483 | Optimisation level (n = 0, 1, 2, ...). B<-O> means B<-O1>. Currently, |
| 1484 | B<-O1> and higher set B<-fcog>. |
| 1485 | |
| 1486 | =head1 EXAMPLES |
| 1487 | |
| 1488 | perl -MO=C,-ofoo.c foo.pl |
| 1489 | perl cc_harness -o foo foo.c |
| 1490 | |
| 1491 | Note that C<cc_harness> lives in the C<B> subdirectory of your perl |
| 1492 | library directory. The utility called C<perlcc> may also be used to |
| 1493 | help make use of this compiler. |
| 1494 | |
| 1495 | perl -MO=C,-v,-DcA bar.pl > /dev/null |
| 1496 | |
| 1497 | =head1 BUGS |
| 1498 | |
| 1499 | Plenty. Current status: experimental. |
| 7f20e9dd |
1500 | |
| 1501 | =head1 AUTHOR |
| 1502 | |
| 1503 | Malcolm Beattie, C<mbeattie@sable.ox.ac.uk> |
| 1504 | |
| 1505 | =cut |
projects / p5sagit/p5-mst-13.2.git / blame