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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 | # |
| 8 | package B::C; |
| 9 | use Exporter (); |
| 10 | @ISA = qw(Exporter); |
| 11 | @EXPORT_OK = qw(output_all output_boilerplate output_main |
| 12 | init_sections set_callback save_unused_subs objsym); |
| 13 | |
| 14 | use B qw(minus_c sv_undef walkoptree walksymtable main_root main_start peekop |
| 15 | class cstring cchar svref_2object compile_stats comppadlist hash |
| 16 | threadsv_names); |
| 17 | use B::Asmdata qw(@specialsv_name); |
| 18 | |
| 19 | use FileHandle; |
| 20 | use Carp; |
| 21 | use strict; |
| 22 | |
| 23 | my $hv_index = 0; |
| 24 | my $gv_index = 0; |
| 25 | my $re_index = 0; |
| 26 | my $pv_index = 0; |
| 27 | my $anonsub_index = 0; |
| 28 | |
| 29 | my %symtable; |
| 30 | my $warn_undefined_syms; |
| 31 | my $verbose; |
| 32 | my @unused_sub_packages; |
| 33 | my $nullop_count; |
| 34 | my $pv_copy_on_grow; |
| 35 | my ($debug_cops, $debug_av, $debug_cv, $debug_mg); |
| 36 | |
| 37 | my @threadsv_names; |
| 38 | BEGIN { |
| 39 | @threadsv_names = threadsv_names(); |
| 40 | } |
| 41 | |
| 42 | # Code sections |
| 43 | my ($init, $decl, $symsect, $binopsect, $condopsect, $copsect, $cvopsect, |
| 44 | $gvopsect, $listopsect, $logopsect, $loopsect, $opsect, $pmopsect, |
| 45 | $pvopsect, $svopsect, $unopsect, $svsect, $xpvsect, $xpvavsect, |
| 46 | $xpvhvsect, $xpvcvsect, $xpvivsect, $xpvnvsect, $xpvmgsect, $xpvlvsect, |
| 47 | $xrvsect, $xpvbmsect, $xpviosect); |
| 48 | |
| 49 | sub walk_and_save_optree; |
| 50 | my $saveoptree_callback = \&walk_and_save_optree; |
| 51 | sub set_callback { $saveoptree_callback = shift } |
| 52 | sub saveoptree { &$saveoptree_callback(@_) } |
| 53 | |
| 54 | sub walk_and_save_optree { |
| 55 | my ($name, $root, $start) = @_; |
| 56 | walkoptree($root, "save"); |
| 57 | return objsym($start); |
| 58 | } |
| 59 | |
| 60 | # Current workaround/fix for op_free() trying to free statically |
| 61 | # defined OPs is to set op_seq = -1 and check for that in op_free(). |
| 62 | # Instead of hardwiring -1 in place of $op->seq, we use $op_seq |
| 63 | # so that it can be changed back easily if necessary. In fact, to |
| 64 | # stop compilers from moaning about a U16 being initialised with an |
| 65 | # uncast -1 (the printf format is %d so we can't tweak it), we have |
| 66 | # to "know" that op_seq is a U16 and use 65535. Ugh. |
| 67 | my $op_seq = 65535; |
| 68 | |
| 69 | sub AVf_REAL () { 1 } |
| 70 | |
| 71 | # XXX This shouldn't really be hardcoded here but it saves |
| 72 | # looking up the name of every BASEOP in B::OP |
| 73 | sub OP_THREADSV () { 345 } |
| 74 | |
| 75 | sub savesym { |
| 76 | my ($obj, $value) = @_; |
| 77 | my $sym = sprintf("s\\_%x", $$obj); |
| 78 | $symtable{$sym} = $value; |
| 79 | } |
| 80 | |
| 81 | sub objsym { |
| 82 | my $obj = shift; |
| 83 | return $symtable{sprintf("s\\_%x", $$obj)}; |
| 84 | } |
| 85 | |
| 86 | sub getsym { |
| 87 | my $sym = shift; |
| 88 | my $value; |
| 89 | |
| 90 | return 0 if $sym eq "sym_0"; # special case |
| 91 | $value = $symtable{$sym}; |
| 92 | if (defined($value)) { |
| 93 | return $value; |
| 94 | } else { |
| 95 | warn "warning: undefined symbol $sym\n" if $warn_undefined_syms; |
| 96 | return "UNUSED"; |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | sub savepv { |
| 101 | my $pv = shift; |
| 102 | my $pvsym = 0; |
| 103 | my $pvmax = 0; |
| 104 | if ($pv_copy_on_grow) { |
| 105 | my $cstring = cstring($pv); |
| 106 | if ($cstring ne "0") { # sic |
| 107 | $pvsym = sprintf("pv%d", $pv_index++); |
| 108 | $decl->add(sprintf("static char %s[] = %s;", $pvsym, $cstring)); |
| 109 | } |
| 110 | } else { |
| 111 | $pvmax = length($pv) + 1; |
| 112 | } |
| 113 | return ($pvsym, $pvmax); |
| 114 | } |
| 115 | |
| 116 | sub B::OP::save { |
| 117 | my ($op, $level) = @_; |
| 118 | my $type = $op->type; |
| 119 | $nullop_count++ unless $type; |
| 120 | if ($type == OP_THREADSV) { |
| 121 | # saves looking up ppaddr but it's a bit naughty to hard code this |
| 122 | $init->add(sprintf("(void)find_threadsv(%s);", |
| 123 | cstring($threadsv_names[$op->targ]))); |
| 124 | } |
| 125 | $opsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x", |
| 126 | ${$op->next}, ${$op->sibling}, $op->ppaddr, $op->targ, |
| 127 | $type, $op_seq, $op->flags, $op->private)); |
| 128 | savesym($op, sprintf("&op_list[%d]", $opsect->index)); |
| 129 | } |
| 130 | |
| 131 | sub B::FAKEOP::new { |
| 132 | my ($class, %objdata) = @_; |
| 133 | bless \%objdata, $class; |
| 134 | } |
| 135 | |
| 136 | sub B::FAKEOP::save { |
| 137 | my ($op, $level) = @_; |
| 138 | $opsect->add(sprintf("%s, %s, %s, %u, %u, %u, 0x%x, 0x%x", |
| 139 | $op->next, $op->sibling, $op->ppaddr, $op->targ, |
| 140 | $op->type, $op_seq, $op->flags, $op->private)); |
| 141 | return sprintf("&op_list[%d]", $opsect->index); |
| 142 | } |
| 143 | |
| 144 | sub B::FAKEOP::next { $_[0]->{"next"} || 0 } |
| 145 | sub B::FAKEOP::type { $_[0]->{type} || 0} |
| 146 | sub B::FAKEOP::sibling { $_[0]->{sibling} || 0 } |
| 147 | sub B::FAKEOP::ppaddr { $_[0]->{ppaddr} || 0 } |
| 148 | sub B::FAKEOP::targ { $_[0]->{targ} || 0 } |
| 149 | sub B::FAKEOP::flags { $_[0]->{flags} || 0 } |
| 150 | sub B::FAKEOP::private { $_[0]->{private} || 0 } |
| 151 | |
| 152 | sub B::UNOP::save { |
| 153 | my ($op, $level) = @_; |
| 154 | $unopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x", |
| 155 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 156 | $op->targ, $op->type, $op_seq, $op->flags, |
| 157 | $op->private, ${$op->first})); |
| 158 | savesym($op, sprintf("(OP*)&unop_list[%d]", $unopsect->index)); |
| 159 | } |
| 160 | |
| 161 | sub B::BINOP::save { |
| 162 | my ($op, $level) = @_; |
| 163 | $binopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x", |
| 164 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 165 | $op->targ, $op->type, $op_seq, $op->flags, |
| 166 | $op->private, ${$op->first}, ${$op->last})); |
| 167 | savesym($op, sprintf("(OP*)&binop_list[%d]", $binopsect->index)); |
| 168 | } |
| 169 | |
| 170 | sub B::LISTOP::save { |
| 171 | my ($op, $level) = @_; |
| 172 | $listopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, %u", |
| 173 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 174 | $op->targ, $op->type, $op_seq, $op->flags, |
| 175 | $op->private, ${$op->first}, ${$op->last}, |
| 176 | $op->children)); |
| 177 | savesym($op, sprintf("(OP*)&listop_list[%d]", $listopsect->index)); |
| 178 | } |
| 179 | |
| 180 | sub B::LOGOP::save { |
| 181 | my ($op, $level) = @_; |
| 182 | $logopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x", |
| 183 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 184 | $op->targ, $op->type, $op_seq, $op->flags, |
| 185 | $op->private, ${$op->first}, ${$op->other})); |
| 186 | savesym($op, sprintf("(OP*)&logop_list[%d]", $logopsect->index)); |
| 187 | } |
| 188 | |
| 189 | sub B::CONDOP::save { |
| 190 | my ($op, $level) = @_; |
| 191 | $condopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, s\\_%x", |
| 192 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 193 | $op->targ, $op->type, $op_seq, $op->flags, |
| 194 | $op->private, ${$op->first}, ${$op->true}, |
| 195 | ${$op->false})); |
| 196 | savesym($op, sprintf("(OP*)&condop_list[%d]", $condopsect->index)); |
| 197 | } |
| 198 | |
| 199 | sub B::LOOP::save { |
| 200 | my ($op, $level) = @_; |
| 201 | #warn sprintf("LOOP: redoop %s, nextop %s, lastop %s\n", |
| 202 | # peekop($op->redoop), peekop($op->nextop), |
| 203 | # peekop($op->lastop)); # debug |
| 204 | $loopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, %u, s\\_%x, s\\_%x, s\\_%x", |
| 205 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 206 | $op->targ, $op->type, $op_seq, $op->flags, |
| 207 | $op->private, ${$op->first}, ${$op->last}, |
| 208 | $op->children, ${$op->redoop}, ${$op->nextop}, |
| 209 | ${$op->lastop})); |
| 210 | savesym($op, sprintf("(OP*)&loop_list[%d]", $loopsect->index)); |
| 211 | } |
| 212 | |
| 213 | sub B::PVOP::save { |
| 214 | my ($op, $level) = @_; |
| 215 | $pvopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, %s", |
| 216 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 217 | $op->targ, $op->type, $op_seq, $op->flags, |
| 218 | $op->private, cstring($op->pv))); |
| 219 | savesym($op, sprintf("(OP*)&pvop_list[%d]", $pvopsect->index)); |
| 220 | } |
| 221 | |
| 222 | sub B::SVOP::save { |
| 223 | my ($op, $level) = @_; |
| 224 | my $svsym = $op->sv->save; |
| 225 | $svopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, %s", |
| 226 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 227 | $op->targ, $op->type, $op_seq, $op->flags, |
| 228 | $op->private, "(SV*)$svsym")); |
| 229 | savesym($op, sprintf("(OP*)&svop_list[%d]", $svopsect->index)); |
| 230 | } |
| 231 | |
| 232 | sub B::GVOP::save { |
| 233 | my ($op, $level) = @_; |
| 234 | my $gvsym = $op->gv->save; |
| 235 | $gvopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, Nullgv", |
| 236 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 237 | $op->targ, $op->type, $op_seq, $op->flags, |
| 238 | $op->private)); |
| 239 | $init->add(sprintf("gvop_list[%d].op_gv = %s;", $gvopsect->index, $gvsym)); |
| 240 | savesym($op, sprintf("(OP*)&gvop_list[%d]", $gvopsect->index)); |
| 241 | } |
| 242 | |
| 243 | sub B::COP::save { |
| 244 | my ($op, $level) = @_; |
| 245 | my $gvsym = $op->filegv->save; |
| 246 | my $stashsym = $op->stash->save; |
| 247 | warn sprintf("COP: line %d file %s\n", $op->line, $op->filegv->SV->PV) |
| 248 | if $debug_cops; |
| 249 | $copsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, %s, Nullhv, Nullgv, %u, %d, %u", |
| 250 | ${$op->next}, ${$op->sibling}, $op->ppaddr, |
| 251 | $op->targ, $op->type, $op_seq, $op->flags, |
| 252 | $op->private, cstring($op->label), $op->cop_seq, |
| 253 | $op->arybase, $op->line)); |
| 254 | my $copix = $copsect->index; |
| 255 | $init->add(sprintf("cop_list[%d].cop_filegv = %s;", $copix, $gvsym), |
| 256 | sprintf("cop_list[%d].cop_stash = %s;", $copix, $stashsym)); |
| 257 | savesym($op, "(OP*)&cop_list[$copix]"); |
| 258 | } |
| 259 | |
| 260 | sub B::PMOP::save { |
| 261 | my ($op, $level) = @_; |
| 262 | my $replroot = $op->pmreplroot; |
| 263 | my $replstart = $op->pmreplstart; |
| 264 | my $replrootfield = sprintf("s\\_%x", $$replroot); |
| 265 | my $replstartfield = sprintf("s\\_%x", $$replstart); |
| 266 | my $gvsym; |
| 267 | my $ppaddr = $op->ppaddr; |
| 268 | if ($$replroot) { |
| 269 | # OP_PUSHRE (a mutated version of OP_MATCH for the regexp |
| 270 | # argument to a split) stores a GV in op_pmreplroot instead |
| 271 | # of a substitution syntax tree. We don't want to walk that... |
| 272 | if ($ppaddr eq "pp_pushre") { |
| 273 | $gvsym = $replroot->save; |
| 274 | # warn "PMOP::save saving a pp_pushre with GV $gvsym\n"; # debug |
| 275 | $replrootfield = 0; |
| 276 | } else { |
| 277 | $replstartfield = saveoptree("*ignore*", $replroot, $replstart); |
| 278 | } |
| 279 | } |
| 280 | # pmnext handling is broken in perl itself, I think. Bad op_pmnext |
| 281 | # fields aren't noticed in perl's runtime (unless you try reset) but we |
| 282 | # segfault when trying to dereference it to find op->op_pmnext->op_type |
| 283 | $pmopsect->add(sprintf("s\\_%x, s\\_%x, %s, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, %u, %s, %s, 0, 0, 0x%x, 0x%x", |
| 284 | ${$op->next}, ${$op->sibling}, $ppaddr, $op->targ, |
| 285 | $op->type, $op_seq, $op->flags, $op->private, |
| 286 | ${$op->first}, ${$op->last}, $op->children, |
| 287 | $replrootfield, $replstartfield, |
| 288 | $op->pmflags, $op->pmpermflags,)); |
| 289 | my $pm = sprintf("pmop_list[%d]", $pmopsect->index); |
| 290 | my $re = $op->precomp; |
| 291 | if (defined($re)) { |
| 292 | my $resym = sprintf("re%d", $re_index++); |
| 293 | $decl->add(sprintf("static char *$resym = %s;", cstring($re))); |
| 294 | $init->add(sprintf("$pm.op_pmregexp = pregcomp($resym, $resym + %u, &$pm);", |
| 295 | length($re))); |
| 296 | } |
| 297 | if ($gvsym) { |
| 298 | $init->add("$pm.op_pmreplroot = (OP*)$gvsym;"); |
| 299 | } |
| 300 | savesym($op, sprintf("(OP*)&pmop_list[%d]", $pmopsect->index)); |
| 301 | } |
| 302 | |
| 303 | sub B::SPECIAL::save { |
| 304 | my ($sv) = @_; |
| 305 | # special case: $$sv is not the address but an index into specialsv_list |
| 306 | # warn "SPECIAL::save specialsv $$sv\n"; # debug |
| 307 | my $sym = $specialsv_name[$$sv]; |
| 308 | if (!defined($sym)) { |
| 309 | confess "unknown specialsv index $$sv passed to B::SPECIAL::save"; |
| 310 | } |
| 311 | return $sym; |
| 312 | } |
| 313 | |
| 314 | sub B::OBJECT::save {} |
| 315 | |
| 316 | sub B::NULL::save { |
| 317 | my ($sv) = @_; |
| 318 | my $sym = objsym($sv); |
| 319 | return $sym if defined $sym; |
| 320 | # warn "Saving SVt_NULL SV\n"; # debug |
| 321 | # debug |
| 322 | #if ($$sv == 0) { |
| 323 | # warn "NULL::save for sv = 0 called from @{[(caller(1))[3]]}\n"; |
| 324 | #} |
| 325 | $svsect->add(sprintf("0, %u, 0x%x", $sv->REFCNT + 1, $sv->FLAGS)); |
| 326 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 327 | } |
| 328 | |
| 329 | sub B::IV::save { |
| 330 | my ($sv) = @_; |
| 331 | my $sym = objsym($sv); |
| 332 | return $sym if defined $sym; |
| 333 | $xpvivsect->add(sprintf("0, 0, 0, %d", $sv->IVX)); |
| 334 | $svsect->add(sprintf("&xpviv_list[%d], %lu, 0x%x", |
| 335 | $xpvivsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
| 336 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 337 | } |
| 338 | |
| 339 | sub B::NV::save { |
| 340 | my ($sv) = @_; |
| 341 | my $sym = objsym($sv); |
| 342 | return $sym if defined $sym; |
| 343 | $xpvnvsect->add(sprintf("0, 0, 0, %d, %s", $sv->IVX, $sv->NVX)); |
| 344 | $svsect->add(sprintf("&xpvnv_list[%d], %lu, 0x%x", |
| 345 | $xpvnvsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
| 346 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 347 | } |
| 348 | |
| 349 | sub B::PVLV::save { |
| 350 | my ($sv) = @_; |
| 351 | my $sym = objsym($sv); |
| 352 | return $sym if defined $sym; |
| 353 | my $pv = $sv->PV; |
| 354 | my $len = length($pv); |
| 355 | my ($pvsym, $pvmax) = savepv($pv); |
| 356 | my ($lvtarg, $lvtarg_sym); |
| 357 | $xpvlvsect->add(sprintf("%s, %u, %u, %d, %g, 0, 0, %u, %u, 0, %s", |
| 358 | $pvsym, $len, $pvmax, $sv->IVX, $sv->NVX, |
| 359 | $sv->TARGOFF, $sv->TARGLEN, cchar($sv->TYPE))); |
| 360 | $svsect->add(sprintf("&xpvlv_list[%d], %lu, 0x%x", |
| 361 | $xpvlvsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
| 362 | if (!$pv_copy_on_grow) { |
| 363 | $init->add(sprintf("xpvlv_list[%d].xpv_pv = savepvn(%s, %u);", |
| 364 | $xpvlvsect->index, cstring($pv), $len)); |
| 365 | } |
| 366 | $sv->save_magic; |
| 367 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 368 | } |
| 369 | |
| 370 | sub B::PVIV::save { |
| 371 | my ($sv) = @_; |
| 372 | my $sym = objsym($sv); |
| 373 | return $sym if defined $sym; |
| 374 | my $pv = $sv->PV; |
| 375 | my $len = length($pv); |
| 376 | my ($pvsym, $pvmax) = savepv($pv); |
| 377 | $xpvivsect->add(sprintf("%s, %u, %u, %d", $pvsym, $len, $pvmax, $sv->IVX)); |
| 378 | $svsect->add(sprintf("&xpviv_list[%d], %u, 0x%x", |
| 379 | $xpvivsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
| 380 | if (!$pv_copy_on_grow) { |
| 381 | $init->add(sprintf("xpviv_list[%d].xpv_pv = savepvn(%s, %u);", |
| 382 | $xpvivsect->index, cstring($pv), $len)); |
| 383 | } |
| 384 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 385 | } |
| 386 | |
| 387 | sub B::PVNV::save { |
| 388 | my ($sv) = @_; |
| 389 | my $sym = objsym($sv); |
| 390 | return $sym if defined $sym; |
| 391 | my $pv = $sv->PV; |
| 392 | my $len = length($pv); |
| 393 | my ($pvsym, $pvmax) = savepv($pv); |
| 394 | $xpvnvsect->add(sprintf("%s, %u, %u, %d, %s", |
| 395 | $pvsym, $len, $pvmax, $sv->IVX, $sv->NVX)); |
| 396 | $svsect->add(sprintf("&xpvnv_list[%d], %lu, 0x%x", |
| 397 | $xpvnvsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
| 398 | if (!$pv_copy_on_grow) { |
| 399 | $init->add(sprintf("xpvnv_list[%d].xpv_pv = savepvn(%s,%u);", |
| 400 | $xpvnvsect->index, cstring($pv), $len)); |
| 401 | } |
| 402 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 403 | } |
| 404 | |
| 405 | sub B::BM::save { |
| 406 | my ($sv) = @_; |
| 407 | my $sym = objsym($sv); |
| 408 | return $sym if defined $sym; |
| 409 | my $pv = $sv->PV . "\0" . $sv->TABLE; |
| 410 | my $len = length($pv); |
| 411 | $xpvbmsect->add(sprintf("0, %u, %u, %d, %s, 0, 0, %d, %u, 0x%x", |
| 412 | $len, $len + 258, $sv->IVX, $sv->NVX, |
| 413 | $sv->USEFUL, $sv->PREVIOUS, $sv->RARE)); |
| 414 | $svsect->add(sprintf("&xpvbm_list[%d], %lu, 0x%x", |
| 415 | $xpvbmsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
| 416 | $sv->save_magic; |
| 417 | $init->add(sprintf("xpvbm_list[%d].xpv_pv = savepvn(%s, %u);", |
| 418 | $xpvbmsect->index, cstring($pv), $len), |
| 419 | sprintf("xpvbm_list[%d].xpv_cur = %u;", |
| 420 | $xpvbmsect->index, $len - 257)); |
| 421 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 422 | } |
| 423 | |
| 424 | sub B::PV::save { |
| 425 | my ($sv) = @_; |
| 426 | my $sym = objsym($sv); |
| 427 | return $sym if defined $sym; |
| 428 | my $pv = $sv->PV; |
| 429 | my $len = length($pv); |
| 430 | my ($pvsym, $pvmax) = savepv($pv); |
| 431 | $xpvsect->add(sprintf("%s, %u, %u", $pvsym, $len, $pvmax)); |
| 432 | $svsect->add(sprintf("&xpv_list[%d], %lu, 0x%x", |
| 433 | $xpvsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
| 434 | if (!$pv_copy_on_grow) { |
| 435 | $init->add(sprintf("xpv_list[%d].xpv_pv = savepvn(%s, %u);", |
| 436 | $xpvsect->index, cstring($pv), $len)); |
| 437 | } |
| 438 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 439 | } |
| 440 | |
| 441 | sub B::PVMG::save { |
| 442 | my ($sv) = @_; |
| 443 | my $sym = objsym($sv); |
| 444 | return $sym if defined $sym; |
| 445 | my $pv = $sv->PV; |
| 446 | my $len = length($pv); |
| 447 | my ($pvsym, $pvmax) = savepv($pv); |
| 448 | $xpvmgsect->add(sprintf("%s, %u, %u, %d, %s, 0, 0", |
| 449 | $pvsym, $len, $pvmax, $sv->IVX, $sv->NVX)); |
| 450 | $svsect->add(sprintf("&xpvmg_list[%d], %lu, 0x%x", |
| 451 | $xpvmgsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
| 452 | if (!$pv_copy_on_grow) { |
| 453 | $init->add(sprintf("xpvmg_list[%d].xpv_pv = savepvn(%s, %u);", |
| 454 | $xpvmgsect->index, cstring($pv), $len)); |
| 455 | } |
| 456 | $sym = savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 457 | $sv->save_magic; |
| 458 | return $sym; |
| 459 | } |
| 460 | |
| 461 | sub B::PVMG::save_magic { |
| 462 | my ($sv) = @_; |
| 463 | #warn sprintf("saving magic for %s (0x%x)\n", class($sv), $$sv); # debug |
| 464 | my $stash = $sv->SvSTASH; |
| 465 | if ($$stash) { |
| 466 | warn sprintf("xmg_stash = %s (0x%x)\n", $stash->NAME, $$stash) |
| 467 | if $debug_mg; |
| 468 | # XXX Hope stash is already going to be saved. |
| 469 | $init->add(sprintf("SvSTASH(s\\_%x) = s\\_%x;", $$sv, $$stash)); |
| 470 | } |
| 471 | my @mgchain = $sv->MAGIC; |
| 472 | my ($mg, $type, $obj, $ptr); |
| 473 | foreach $mg (@mgchain) { |
| 474 | $type = $mg->TYPE; |
| 475 | $obj = $mg->OBJ; |
| 476 | $ptr = $mg->PTR; |
| 477 | my $len = defined($ptr) ? length($ptr) : 0; |
| 478 | if ($debug_mg) { |
| 479 | warn sprintf("magic %s (0x%x), obj %s (0x%x), type %s, ptr %s\n", |
| 480 | class($sv), $$sv, class($obj), $$obj, |
| 481 | cchar($type), cstring($ptr)); |
| 482 | } |
| 483 | $init->add(sprintf("sv_magic((SV*)s\\_%x, (SV*)s\\_%x, %s, %s, %d);", |
| 484 | $$sv, $$obj, cchar($type),cstring($ptr),$len)); |
| 485 | } |
| 486 | } |
| 487 | |
| 488 | sub B::RV::save { |
| 489 | my ($sv) = @_; |
| 490 | my $sym = objsym($sv); |
| 491 | return $sym if defined $sym; |
| 492 | $xrvsect->add($sv->RV->save); |
| 493 | $svsect->add(sprintf("&xrv_list[%d], %lu, 0x%x", |
| 494 | $xrvsect->index, $sv->REFCNT + 1, $sv->FLAGS)); |
| 495 | return savesym($sv, sprintf("&sv_list[%d]", $svsect->index)); |
| 496 | } |
| 497 | |
| 498 | sub try_autoload { |
| 499 | my ($cvstashname, $cvname) = @_; |
| 500 | warn sprintf("No definition for sub %s::%s\n", $cvstashname, $cvname); |
| 501 | # Handle AutoLoader classes explicitly. Any more general AUTOLOAD |
| 502 | # use should be handled by the class itself. |
| 503 | no strict 'refs'; |
| 504 | my $isa = \@{"$cvstashname\::ISA"}; |
| 505 | if (grep($_ eq "AutoLoader", @$isa)) { |
| 506 | warn "Forcing immediate load of sub derived from AutoLoader\n"; |
| 507 | # Tweaked version of AutoLoader::AUTOLOAD |
| 508 | my $dir = $cvstashname; |
| 509 | $dir =~ s(::)(/)g; |
| 510 | eval { require "auto/$dir/$cvname.al" }; |
| 511 | if ($@) { |
| 512 | warn qq(failed require "auto/$dir/$cvname.al": $@\n); |
| 513 | return 0; |
| 514 | } else { |
| 515 | return 1; |
| 516 | } |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | sub B::CV::save { |
| 521 | my ($cv) = @_; |
| 522 | my $sym = objsym($cv); |
| 523 | if (defined($sym)) { |
| 524 | # warn sprintf("CV 0x%x already saved as $sym\n", $$cv); # debug |
| 525 | return $sym; |
| 526 | } |
| 527 | # Reserve a place in svsect and xpvcvsect and record indices |
| 528 | my $sv_ix = $svsect->index + 1; |
| 529 | $svsect->add("svix$sv_ix"); |
| 530 | my $xpvcv_ix = $xpvcvsect->index + 1; |
| 531 | $xpvcvsect->add("xpvcvix$xpvcv_ix"); |
| 532 | # Save symbol now so that GvCV() doesn't recurse back to us via CvGV() |
| 533 | $sym = savesym($cv, "&sv_list[$sv_ix]"); |
| 534 | warn sprintf("saving CV 0x%x as $sym\n", $$cv) if $debug_cv; |
| 535 | my $gv = $cv->GV; |
| 536 | my $cvstashname = $gv->STASH->NAME; |
| 537 | my $cvname = $gv->NAME; |
| 538 | my $root = $cv->ROOT; |
| 539 | my $cvxsub = $cv->XSUB; |
| 540 | if (!$$root && !$cvxsub) { |
| 541 | if (try_autoload($cvstashname, $cvname)) { |
| 542 | # Recalculate root and xsub |
| 543 | $root = $cv->ROOT; |
| 544 | $cvxsub = $cv->XSUB; |
| 545 | if ($$root || $cvxsub) { |
| 546 | warn "Successful forced autoload\n"; |
| 547 | } |
| 548 | } |
| 549 | } |
| 550 | my $startfield = 0; |
| 551 | my $padlist = $cv->PADLIST; |
| 552 | my $pv = $cv->PV; |
| 553 | my $xsub = 0; |
| 554 | my $xsubany = "Nullany"; |
| 555 | if ($$root) { |
| 556 | warn sprintf("saving op tree for CV 0x%x, root = 0x%x\n", |
| 557 | $$cv, $$root) if $debug_cv; |
| 558 | my $ppname = ""; |
| 559 | if ($$gv) { |
| 560 | my $stashname = $gv->STASH->NAME; |
| 561 | my $gvname = $gv->NAME; |
| 562 | if ($gvname ne "__ANON__") { |
| 563 | $ppname = (${$gv->FORM} == $$cv) ? "pp_form_" : "pp_sub_"; |
| 564 | $ppname .= ($stashname eq "main") ? |
| 565 | $gvname : "$stashname\::$gvname"; |
| 566 | $ppname =~ s/::/__/g; |
| 567 | } |
| 568 | } |
| 569 | if (!$ppname) { |
| 570 | $ppname = "pp_anonsub_$anonsub_index"; |
| 571 | $anonsub_index++; |
| 572 | } |
| 573 | $startfield = saveoptree($ppname, $root, $cv->START, $padlist->ARRAY); |
| 574 | warn sprintf("done saving op tree for CV 0x%x, name %s, root 0x%x\n", |
| 575 | $$cv, $ppname, $$root) if $debug_cv; |
| 576 | if ($$padlist) { |
| 577 | warn sprintf("saving PADLIST 0x%x for CV 0x%x\n", |
| 578 | $$padlist, $$cv) if $debug_cv; |
| 579 | $padlist->save; |
| 580 | warn sprintf("done saving PADLIST 0x%x for CV 0x%x\n", |
| 581 | $$padlist, $$cv) if $debug_cv; |
| 582 | } |
| 583 | } |
| 584 | elsif ($cvxsub) { |
| 585 | $xsubany = sprintf("ANYINIT((void*)0x%x)", $cv->XSUBANY); |
| 586 | # Try to find out canonical name of XSUB function from EGV. |
| 587 | # XXX Doesn't work for XSUBs with PREFIX set (or anyone who |
| 588 | # calls newXS() manually with weird arguments). |
| 589 | my $egv = $gv->EGV; |
| 590 | my $stashname = $egv->STASH->NAME; |
| 591 | $stashname =~ s/::/__/g; |
| 592 | $xsub = sprintf("XS_%s_%s", $stashname, $egv->NAME); |
| 593 | $decl->add("void $xsub _((CV*));"); |
| 594 | } |
| 595 | else { |
| 596 | warn sprintf("No definition for sub %s::%s (unable to autoload)\n", |
| 597 | $cvstashname, $cvname); # debug |
| 598 | } |
| 599 | $symsect->add(sprintf("xpvcvix%d\t%s, %u, 0, %d, %s, 0, Nullhv, Nullhv, %s, s\\_%x, $xsub, $xsubany, Nullgv, Nullgv, %d, s\\_%x, (CV*)s\\_%x, 0", |
| 600 | $xpvcv_ix, cstring($pv), length($pv), $cv->IVX, |
| 601 | $cv->NVX, $startfield, ${$cv->ROOT}, $cv->DEPTH, |
| 602 | $$padlist, ${$cv->OUTSIDE})); |
| 603 | if ($$gv) { |
| 604 | $gv->save; |
| 605 | $init->add(sprintf("CvGV(s\\_%x) = s\\_%x;",$$cv,$$gv)); |
| 606 | warn sprintf("done saving GV 0x%x for CV 0x%x\n", |
| 607 | $$gv, $$cv) if $debug_cv; |
| 608 | } |
| 609 | my $filegv = $cv->FILEGV; |
| 610 | if ($$filegv) { |
| 611 | $filegv->save; |
| 612 | $init->add(sprintf("CvFILEGV(s\\_%x) = s\\_%x;", $$cv, $$filegv)); |
| 613 | warn sprintf("done saving FILEGV 0x%x for CV 0x%x\n", |
| 614 | $$filegv, $$cv) if $debug_cv; |
| 615 | } |
| 616 | my $stash = $cv->STASH; |
| 617 | if ($$stash) { |
| 618 | $stash->save; |
| 619 | $init->add(sprintf("CvSTASH(s\\_%x) = s\\_%x;", $$cv, $$stash)); |
| 620 | warn sprintf("done saving STASH 0x%x for CV 0x%x\n", |
| 621 | $$stash, $$cv) if $debug_cv; |
| 622 | } |
| 623 | $symsect->add(sprintf("svix%d\t(XPVCV*)&xpvcv_list[%u], %lu, 0x%x", |
| 624 | $sv_ix, $xpvcv_ix, $cv->REFCNT + 1, $cv->FLAGS)); |
| 625 | return $sym; |
| 626 | } |
| 627 | |
| 628 | sub B::GV::save { |
| 629 | my ($gv) = @_; |
| 630 | my $sym = objsym($gv); |
| 631 | if (defined($sym)) { |
| 632 | #warn sprintf("GV 0x%x already saved as $sym\n", $$gv); # debug |
| 633 | return $sym; |
| 634 | } else { |
| 635 | my $ix = $gv_index++; |
| 636 | $sym = savesym($gv, "gv_list[$ix]"); |
| 637 | #warn sprintf("Saving GV 0x%x as $sym\n", $$gv); # debug |
| 638 | } |
| 639 | my $gvname = $gv->NAME; |
| 640 | my $name = cstring($gv->STASH->NAME . "::" . $gvname); |
| 641 | #warn "GV name is $name\n"; # debug |
| 642 | my $egv = $gv->EGV; |
| 643 | my $egvsym; |
| 644 | if ($$gv != $$egv) { |
| 645 | #warn(sprintf("EGV name is %s, saving it now\n", |
| 646 | # $egv->STASH->NAME . "::" . $egv->NAME)); # debug |
| 647 | $egvsym = $egv->save; |
| 648 | } |
| 649 | $init->add(qq[$sym = gv_fetchpv($name, TRUE, SVt_PV);], |
| 650 | sprintf("SvFLAGS($sym) = 0x%x;", $gv->FLAGS), |
| 651 | sprintf("GvFLAGS($sym) = 0x%x;", $gv->GvFLAGS), |
| 652 | sprintf("GvLINE($sym) = %u;", $gv->LINE)); |
| 653 | # Shouldn't need to do save_magic since gv_fetchpv handles that |
| 654 | #$gv->save_magic; |
| 655 | my $refcnt = $gv->REFCNT + 1; |
| 656 | $init->add(sprintf("SvREFCNT($sym) += %u;", $refcnt - 1)) if $refcnt > 1; |
| 657 | my $gvrefcnt = $gv->GvREFCNT; |
| 658 | if ($gvrefcnt > 1) { |
| 659 | $init->add(sprintf("GvREFCNT($sym) += %u;", $gvrefcnt - 1)); |
| 660 | } |
| 661 | if (defined($egvsym)) { |
| 662 | # Shared glob *foo = *bar |
| 663 | $init->add("gp_free($sym);", |
| 664 | "GvGP($sym) = GvGP($egvsym);"); |
| 665 | } elsif ($gvname !~ /^([^A-Za-z]|STDIN|STDOUT|STDERR|ARGV|SIG|ENV)$/) { |
| 666 | # Don't save subfields of special GVs (*_, *1, *# and so on) |
| 667 | # warn "GV::save saving subfields\n"; # debug |
| 668 | my $gvsv = $gv->SV; |
| 669 | if ($$gvsv) { |
| 670 | $init->add(sprintf("GvSV($sym) = s\\_%x;", $$gvsv)); |
| 671 | # warn "GV::save \$$name\n"; # debug |
| 672 | $gvsv->save; |
| 673 | } |
| 674 | my $gvav = $gv->AV; |
| 675 | if ($$gvav) { |
| 676 | $init->add(sprintf("GvAV($sym) = s\\_%x;", $$gvav)); |
| 677 | # warn "GV::save \@$name\n"; # debug |
| 678 | $gvav->save; |
| 679 | } |
| 680 | my $gvhv = $gv->HV; |
| 681 | if ($$gvhv) { |
| 682 | $init->add(sprintf("GvHV($sym) = s\\_%x;", $$gvhv)); |
| 683 | # warn "GV::save \%$name\n"; # debug |
| 684 | $gvhv->save; |
| 685 | } |
| 686 | my $gvcv = $gv->CV; |
| 687 | if ($$gvcv) { |
| 688 | $init->add(sprintf("GvCV($sym) = (CV*)s\\_%x;", $$gvcv)); |
| 689 | # warn "GV::save &$name\n"; # debug |
| 690 | $gvcv->save; |
| 691 | } |
| 692 | my $gvfilegv = $gv->FILEGV; |
| 693 | if ($$gvfilegv) { |
| 694 | $init->add(sprintf("GvFILEGV($sym) = s\\_%x;",$$gvfilegv)); |
| 695 | # warn "GV::save GvFILEGV(*$name)\n"; # debug |
| 696 | $gvfilegv->save; |
| 697 | } |
| 698 | my $gvform = $gv->FORM; |
| 699 | if ($$gvform) { |
| 700 | $init->add(sprintf("GvFORM($sym) = (CV*)s\\_%x;", $$gvform)); |
| 701 | # warn "GV::save GvFORM(*$name)\n"; # debug |
| 702 | $gvform->save; |
| 703 | } |
| 704 | my $gvio = $gv->IO; |
| 705 | if ($$gvio) { |
| 706 | $init->add(sprintf("GvIOp($sym) = s\\_%x;", $$gvio)); |
| 707 | # warn "GV::save GvIO(*$name)\n"; # debug |
| 708 | $gvio->save; |
| 709 | } |
| 710 | } |
| 711 | return $sym; |
| 712 | } |
| 713 | sub B::AV::save { |
| 714 | my ($av) = @_; |
| 715 | my $sym = objsym($av); |
| 716 | return $sym if defined $sym; |
| 717 | my $avflags = $av->AvFLAGS; |
| 718 | $xpvavsect->add(sprintf("0, -1, -1, 0, 0.0, 0, Nullhv, 0, 0, 0x%x", |
| 719 | $avflags)); |
| 720 | $svsect->add(sprintf("&xpvav_list[%d], %lu, 0x%x", |
| 721 | $xpvavsect->index, $av->REFCNT + 1, $av->FLAGS)); |
| 722 | my $sv_list_index = $svsect->index; |
| 723 | my $fill = $av->FILL; |
| 724 | $av->save_magic; |
| 725 | warn sprintf("saving AV 0x%x FILL=$fill AvFLAGS=0x%x", $$av, $avflags) |
| 726 | if $debug_av; |
| 727 | # XXX AVf_REAL is wrong test: need to save comppadlist but not stack |
| 728 | #if ($fill > -1 && ($avflags & AVf_REAL)) { |
| 729 | if ($fill > -1) { |
| 730 | my @array = $av->ARRAY; |
| 731 | if ($debug_av) { |
| 732 | my $el; |
| 733 | my $i = 0; |
| 734 | foreach $el (@array) { |
| 735 | warn sprintf("AV 0x%x[%d] = %s 0x%x\n", |
| 736 | $$av, $i++, class($el), $$el); |
| 737 | } |
| 738 | } |
| 739 | my @names = map($_->save, @array); |
| 740 | # XXX Better ways to write loop? |
| 741 | # Perhaps svp[0] = ...; svp[1] = ...; svp[2] = ...; |
| 742 | # Perhaps I32 i = 0; svp[i++] = ...; svp[i++] = ...; svp[i++] = ...; |
| 743 | $init->add("{", |
| 744 | "\tSV **svp;", |
| 745 | "\tAV *av = (AV*)&sv_list[$sv_list_index];", |
| 746 | "\tav_extend(av, $fill);", |
| 747 | "\tsvp = AvARRAY(av);", |
| 748 | map("\t*svp++ = (SV*)$_;", @names), |
| 749 | "\tAvFILLp(av) = $fill;", |
| 750 | "}"); |
| 751 | } else { |
| 752 | my $max = $av->MAX; |
| 753 | $init->add("av_extend((AV*)&sv_list[$sv_list_index], $max);") |
| 754 | if $max > -1; |
| 755 | } |
| 756 | return savesym($av, "(AV*)&sv_list[$sv_list_index]"); |
| 757 | } |
| 758 | |
| 759 | sub B::HV::save { |
| 760 | my ($hv) = @_; |
| 761 | my $sym = objsym($hv); |
| 762 | return $sym if defined $sym; |
| 763 | my $name = $hv->NAME; |
| 764 | if ($name) { |
| 765 | # It's a stash |
| 766 | |
| 767 | # A perl bug means HvPMROOT isn't altered when a PMOP is freed. Usually |
| 768 | # the only symptom is that sv_reset tries to reset the PMf_USED flag of |
| 769 | # a trashed op but we look at the trashed op_type and segfault. |
| 770 | #my $adpmroot = ${$hv->PMROOT}; |
| 771 | my $adpmroot = 0; |
| 772 | $decl->add("static HV *hv$hv_index;"); |
| 773 | # XXX Beware of weird package names containing double-quotes, \n, ...? |
| 774 | $init->add(qq[hv$hv_index = gv_stashpv("$name", TRUE);]); |
| 775 | if ($adpmroot) { |
| 776 | $init->add(sprintf("HvPMROOT(hv$hv_index) = (PMOP*)s\\_%x;", |
| 777 | $adpmroot)); |
| 778 | } |
| 779 | $sym = savesym($hv, "hv$hv_index"); |
| 780 | $hv_index++; |
| 781 | return $sym; |
| 782 | } |
| 783 | # It's just an ordinary HV |
| 784 | $xpvhvsect->add(sprintf("0, 0, %d, 0, 0.0, 0, Nullhv, %d, 0, 0, 0", |
| 785 | $hv->MAX, $hv->RITER)); |
| 786 | $svsect->add(sprintf("&xpvhv_list[%d], %lu, 0x%x", |
| 787 | $xpvhvsect->index, $hv->REFCNT + 1, $hv->FLAGS)); |
| 788 | my $sv_list_index = $svsect->index; |
| 789 | my @contents = $hv->ARRAY; |
| 790 | if (@contents) { |
| 791 | my $i; |
| 792 | for ($i = 1; $i < @contents; $i += 2) { |
| 793 | $contents[$i] = $contents[$i]->save; |
| 794 | } |
| 795 | $init->add("{", "\tHV *hv = (HV*)&sv_list[$sv_list_index];"); |
| 796 | while (@contents) { |
| 797 | my ($key, $value) = splice(@contents, 0, 2); |
| 798 | $init->add(sprintf("\thv_store(hv, %s, %u, %s, %s);", |
| 799 | cstring($key),length($key),$value, hash($key))); |
| 800 | } |
| 801 | $init->add("}"); |
| 802 | } |
| 803 | return savesym($hv, "(HV*)&sv_list[$sv_list_index]"); |
| 804 | } |
| 805 | |
| 806 | sub B::IO::save { |
| 807 | my ($io) = @_; |
| 808 | my $sym = objsym($io); |
| 809 | return $sym if defined $sym; |
| 810 | my $pv = $io->PV; |
| 811 | my $len = length($pv); |
| 812 | $xpviosect->add(sprintf("0, %u, %u, %d, %s, 0, 0, 0, 0, 0, %d, %d, %d, %d, %s, Nullgv, %s, Nullgv, %s, Nullgv, %d, %s, 0x%x", |
| 813 | $len, $len+1, $io->IVX, $io->NVX, $io->LINES, |
| 814 | $io->PAGE, $io->PAGE_LEN, $io->LINES_LEFT, |
| 815 | cstring($io->TOP_NAME), cstring($io->FMT_NAME), |
| 816 | cstring($io->BOTTOM_NAME), $io->SUBPROCESS, |
| 817 | cchar($io->IoTYPE), $io->IoFLAGS)); |
| 818 | $svsect->add(sprintf("&xpvio_list[%d], %lu, 0x%x", |
| 819 | $xpviosect->index, $io->REFCNT + 1, $io->FLAGS)); |
| 820 | $sym = savesym($io, sprintf("(IO*)&sv_list[%d]", $svsect->index)); |
| 821 | my ($field, $fsym); |
| 822 | foreach $field (qw(TOP_GV FMT_GV BOTTOM_GV)) { |
| 823 | $fsym = $io->$field(); |
| 824 | if ($$fsym) { |
| 825 | $init->add(sprintf("Io$field($sym) = (GV*)s\\_%x;", $$fsym)); |
| 826 | $fsym->save; |
| 827 | } |
| 828 | } |
| 829 | $io->save_magic; |
| 830 | return $sym; |
| 831 | } |
| 832 | |
| 833 | sub B::SV::save { |
| 834 | my $sv = shift; |
| 835 | # This is where we catch an honest-to-goodness Nullsv (which gets |
| 836 | # blessed into B::SV explicitly) and any stray erroneous SVs. |
| 837 | return 0 unless $$sv; |
| 838 | confess sprintf("cannot save that type of SV: %s (0x%x)\n", |
| 839 | class($sv), $$sv); |
| 840 | } |
| 841 | |
| 842 | sub output_all { |
| 843 | my $init_name = shift; |
| 844 | my $section; |
| 845 | my @sections = ($opsect, $unopsect, $binopsect, $logopsect, $condopsect, |
| 846 | $listopsect, $pmopsect, $svopsect, $gvopsect, $pvopsect, |
| 847 | $cvopsect, $loopsect, $copsect, $svsect, $xpvsect, |
| 848 | $xpvavsect, $xpvhvsect, $xpvcvsect, $xpvivsect, $xpvnvsect, |
| 849 | $xpvmgsect, $xpvlvsect, $xrvsect, $xpvbmsect, $xpviosect); |
| 850 | $symsect->output(\*STDOUT, "#define %s\n"); |
| 851 | print "\n"; |
| 852 | output_declarations(); |
| 853 | foreach $section (@sections) { |
| 854 | my $lines = $section->index + 1; |
| 855 | if ($lines) { |
| 856 | my $name = $section->name; |
| 857 | my $typename = ($name eq "xpvcv") ? "XPVCV_or_similar" : uc($name); |
| 858 | print "Static $typename ${name}_list[$lines];\n"; |
| 859 | } |
| 860 | } |
| 861 | $decl->output(\*STDOUT, "%s\n"); |
| 862 | print "\n"; |
| 863 | foreach $section (@sections) { |
| 864 | my $lines = $section->index + 1; |
| 865 | if ($lines) { |
| 866 | my $name = $section->name; |
| 867 | my $typename = ($name eq "xpvcv") ? "XPVCV_or_similar" : uc($name); |
| 868 | printf "static %s %s_list[%u] = {\n", $typename, $name, $lines; |
| 869 | $section->output(\*STDOUT, "\t{ %s },\n"); |
| 870 | print "};\n\n"; |
| 871 | } |
| 872 | } |
| 873 | |
| 874 | print <<"EOT"; |
| 875 | static int $init_name() |
| 876 | { |
| 877 | dTHR; |
| 878 | EOT |
| 879 | $init->output(\*STDOUT, "\t%s\n"); |
| 880 | print "\treturn 0;\n}\n"; |
| 881 | if ($verbose) { |
| 882 | warn compile_stats(); |
| 883 | warn "NULLOP count: $nullop_count\n"; |
| 884 | } |
| 885 | } |
| 886 | |
| 887 | sub output_declarations { |
| 888 | print <<'EOT'; |
| 889 | #ifdef BROKEN_STATIC_REDECL |
| 890 | #define Static extern |
| 891 | #else |
| 892 | #define Static static |
| 893 | #endif /* BROKEN_STATIC_REDECL */ |
| 894 | |
| 895 | #ifdef BROKEN_UNION_INIT |
| 896 | /* |
| 897 | * Cribbed from cv.h with ANY (a union) replaced by void*. |
| 898 | * Some pre-Standard compilers can't cope with initialising unions. Ho hum. |
| 899 | */ |
| 900 | typedef struct { |
| 901 | char * xpv_pv; /* pointer to malloced string */ |
| 902 | STRLEN xpv_cur; /* length of xp_pv as a C string */ |
| 903 | STRLEN xpv_len; /* allocated size */ |
| 904 | IV xof_off; /* integer value */ |
| 905 | double xnv_nv; /* numeric value, if any */ |
| 906 | MAGIC* xmg_magic; /* magic for scalar array */ |
| 907 | HV* xmg_stash; /* class package */ |
| 908 | |
| 909 | HV * xcv_stash; |
| 910 | OP * xcv_start; |
| 911 | OP * xcv_root; |
| 912 | void (*xcv_xsub) _((CV*)); |
| 913 | void * xcv_xsubany; |
| 914 | GV * xcv_gv; |
| 915 | GV * xcv_filegv; |
| 916 | long xcv_depth; /* >= 2 indicates recursive call */ |
| 917 | AV * xcv_padlist; |
| 918 | CV * xcv_outside; |
| 919 | #ifdef USE_THREADS |
| 920 | perl_mutex *xcv_mutexp; |
| 921 | struct perl_thread *xcv_owner; /* current owner thread */ |
| 922 | #endif /* USE_THREADS */ |
| 923 | U8 xcv_flags; |
| 924 | } XPVCV_or_similar; |
| 925 | #define ANYINIT(i) i |
| 926 | #else |
| 927 | #define XPVCV_or_similar XPVCV |
| 928 | #define ANYINIT(i) {i} |
| 929 | #endif /* BROKEN_UNION_INIT */ |
| 930 | #define Nullany ANYINIT(0) |
| 931 | |
| 932 | #define UNUSED 0 |
| 933 | #define sym_0 0 |
| 934 | |
| 935 | EOT |
| 936 | print "static GV *gv_list[$gv_index];\n" if $gv_index; |
| 937 | print "\n"; |
| 938 | } |
| 939 | |
| 940 | |
| 941 | sub output_boilerplate { |
| 942 | print <<'EOT'; |
| 943 | #include "EXTERN.h" |
| 944 | #include "perl.h" |
| 945 | #ifndef PATCHLEVEL |
| 946 | #include "patchlevel.h" |
| 947 | #endif |
| 948 | |
| 949 | /* Workaround for mapstart: the only op which needs a different ppaddr */ |
| 950 | #undef pp_mapstart |
| 951 | #define pp_mapstart pp_grepstart |
| 952 | |
| 953 | static void xs_init _((void)); |
| 954 | static PerlInterpreter *my_perl; |
| 955 | EOT |
| 956 | } |
| 957 | |
| 958 | sub output_main { |
| 959 | print <<'EOT'; |
| 960 | int |
| 961 | #ifndef CAN_PROTOTYPE |
| 962 | main(argc, argv, env) |
| 963 | int argc; |
| 964 | char **argv; |
| 965 | char **env; |
| 966 | #else /* def(CAN_PROTOTYPE) */ |
| 967 | main(int argc, char **argv, char **env) |
| 968 | #endif /* def(CAN_PROTOTYPE) */ |
| 969 | { |
| 970 | int exitstatus; |
| 971 | int i; |
| 972 | char **fakeargv; |
| 973 | |
| 974 | PERL_SYS_INIT(&argc,&argv); |
| 975 | |
| 976 | perl_init_i18nl10n(1); |
| 977 | |
| 81009501 |
978 | if (!PL_do_undump) { |
| a798dbf2 |
979 | my_perl = perl_alloc(); |
| 980 | if (!my_perl) |
| 981 | exit(1); |
| 982 | perl_construct( my_perl ); |
| 983 | } |
| 984 | |
| 985 | #ifdef CSH |
| 81009501 |
986 | if (!PL_cshlen) |
| 987 | PL_cshlen = strlen(PL_cshname); |
| a798dbf2 |
988 | #endif |
| 989 | |
| 990 | #ifdef ALLOW_PERL_OPTIONS |
| 991 | #define EXTRA_OPTIONS 2 |
| 992 | #else |
| 993 | #define EXTRA_OPTIONS 3 |
| 994 | #endif /* ALLOW_PERL_OPTIONS */ |
| 995 | New(666, fakeargv, argc + EXTRA_OPTIONS + 1, char *); |
| 996 | fakeargv[0] = argv[0]; |
| 997 | fakeargv[1] = "-e"; |
| 998 | fakeargv[2] = ""; |
| 999 | #ifndef ALLOW_PERL_OPTIONS |
| 1000 | fakeargv[3] = "--"; |
| 1001 | #endif /* ALLOW_PERL_OPTIONS */ |
| 1002 | for (i = 1; i < argc; i++) |
| 1003 | fakeargv[i + EXTRA_OPTIONS] = argv[i]; |
| 1004 | fakeargv[argc + EXTRA_OPTIONS] = 0; |
| 1005 | |
| 1006 | exitstatus = perl_parse(my_perl, xs_init, argc + EXTRA_OPTIONS, |
| 1007 | fakeargv, NULL); |
| 1008 | if (exitstatus) |
| 1009 | exit( exitstatus ); |
| 1010 | |
| 1011 | sv_setpv(GvSV(gv_fetchpv("0", TRUE, SVt_PV)), argv[0]); |
| 81009501 |
1012 | PL_main_cv = PL_compcv; |
| 1013 | PL_compcv = 0; |
| a798dbf2 |
1014 | |
| 1015 | exitstatus = perl_init(); |
| 1016 | if (exitstatus) |
| 1017 | exit( exitstatus ); |
| 1018 | |
| 1019 | exitstatus = perl_run( my_perl ); |
| 1020 | |
| 1021 | perl_destruct( my_perl ); |
| 1022 | perl_free( my_perl ); |
| 1023 | |
| 1024 | exit( exitstatus ); |
| 1025 | } |
| 1026 | |
| 1027 | static void |
| 1028 | xs_init() |
| 1029 | { |
| 1030 | } |
| 1031 | EOT |
| 1032 | } |
| 1033 | |
| 1034 | sub dump_symtable { |
| 1035 | # For debugging |
| 1036 | my ($sym, $val); |
| 1037 | warn "----Symbol table:\n"; |
| 1038 | while (($sym, $val) = each %symtable) { |
| 1039 | warn "$sym => $val\n"; |
| 1040 | } |
| 1041 | warn "---End of symbol table\n"; |
| 1042 | } |
| 1043 | |
| 1044 | sub save_object { |
| 1045 | my $sv; |
| 1046 | foreach $sv (@_) { |
| 1047 | svref_2object($sv)->save; |
| 1048 | } |
| 1049 | } |
| 1050 | |
| 1051 | sub B::GV::savecv { |
| 1052 | my $gv = shift; |
| 1053 | my $cv = $gv->CV; |
| 1054 | my $name = $gv->NAME; |
| 1055 | if ($$cv && !objsym($cv) && !($name eq "bootstrap" && $cv->XSUB)) { |
| 1056 | if ($debug_cv) { |
| 1057 | warn sprintf("saving extra CV &%s::%s (0x%x) from GV 0x%x\n", |
| 1058 | $gv->STASH->NAME, $name, $$cv, $$gv); |
| 1059 | } |
| 1060 | $gv->save; |
| 1061 | } |
| 1062 | } |
| 1063 | |
| 1064 | sub save_unused_subs { |
| 1065 | my %search_pack; |
| 1066 | map { $search_pack{$_} = 1 } @_; |
| 1067 | no strict qw(vars refs); |
| 1068 | walksymtable(\%{"main::"}, "savecv", sub { |
| 1069 | my $package = shift; |
| 1070 | $package =~ s/::$//; |
| 1071 | #warn "Considering $package\n";#debug |
| 1072 | return 1 if exists $search_pack{$package}; |
| 1073 | #warn " (nothing explicit)\n";#debug |
| 1074 | # Omit the packages which we use (and which cause grief |
| 1075 | # because of fancy "goto &$AUTOLOAD" stuff). |
| 1076 | # XXX Surely there must be a nicer way to do this. |
| 1077 | if ($package eq "FileHandle" |
| 1078 | || $package eq "Config" |
| 1079 | || $package eq "SelectSaver") { |
| 1080 | return 0; |
| 1081 | } |
| 1082 | my $m; |
| 1083 | foreach $m (qw(new DESTROY TIESCALAR TIEARRAY TIEHASH)) { |
| 1084 | if (defined(&{$package."::$m"})) { |
| 1085 | warn "$package has method $m: -u$package assumed\n";#debug |
| 1086 | return 1; |
| 1087 | } |
| 1088 | } |
| 1089 | return 0; |
| 1090 | }); |
| 1091 | } |
| 1092 | |
| 1093 | sub save_main { |
| 1094 | my $curpad_sym = (comppadlist->ARRAY)[1]->save; |
| 1095 | walkoptree(main_root, "save"); |
| 1096 | warn "done main optree, walking symtable for extras\n" if $debug_cv; |
| 1097 | save_unused_subs(@unused_sub_packages); |
| 1098 | |
| 81009501 |
1099 | $init->add(sprintf("PL_main_root = s\\_%x;", ${main_root()}), |
| 1100 | sprintf("PL_main_start = s\\_%x;", ${main_start()}), |
| 1101 | "PL_curpad = AvARRAY($curpad_sym);"); |
| a798dbf2 |
1102 | output_boilerplate(); |
| 1103 | print "\n"; |
| 1104 | output_all("perl_init"); |
| 1105 | print "\n"; |
| 1106 | output_main(); |
| 1107 | } |
| 1108 | |
| 1109 | sub init_sections { |
| 1110 | my @sections = (init => \$init, decl => \$decl, sym => \$symsect, |
| 1111 | binop => \$binopsect, condop => \$condopsect, |
| 1112 | cop => \$copsect, cvop => \$cvopsect, gvop => \$gvopsect, |
| 1113 | listop => \$listopsect, logop => \$logopsect, |
| 1114 | loop => \$loopsect, op => \$opsect, pmop => \$pmopsect, |
| 1115 | pvop => \$pvopsect, svop => \$svopsect, unop => \$unopsect, |
| 1116 | sv => \$svsect, xpv => \$xpvsect, xpvav => \$xpvavsect, |
| 1117 | xpvhv => \$xpvhvsect, xpvcv => \$xpvcvsect, |
| 1118 | xpviv => \$xpvivsect, xpvnv => \$xpvnvsect, |
| 1119 | xpvmg => \$xpvmgsect, xpvlv => \$xpvlvsect, |
| 1120 | xrv => \$xrvsect, xpvbm => \$xpvbmsect, |
| 1121 | xpvio => \$xpviosect); |
| 1122 | my ($name, $sectref); |
| 1123 | while (($name, $sectref) = splice(@sections, 0, 2)) { |
| 1124 | $$sectref = new B::Section $name, \%symtable, 0; |
| 1125 | } |
| 1126 | } |
| 1127 | |
| 1128 | sub compile { |
| 1129 | my @options = @_; |
| 1130 | my ($option, $opt, $arg); |
| 1131 | OPTION: |
| 1132 | while ($option = shift @options) { |
| 1133 | if ($option =~ /^-(.)(.*)/) { |
| 1134 | $opt = $1; |
| 1135 | $arg = $2; |
| 1136 | } else { |
| 1137 | unshift @options, $option; |
| 1138 | last OPTION; |
| 1139 | } |
| 1140 | if ($opt eq "-" && $arg eq "-") { |
| 1141 | shift @options; |
| 1142 | last OPTION; |
| 1143 | } |
| 1144 | if ($opt eq "w") { |
| 1145 | $warn_undefined_syms = 1; |
| 1146 | } elsif ($opt eq "D") { |
| 1147 | $arg ||= shift @options; |
| 1148 | foreach $arg (split(//, $arg)) { |
| 1149 | if ($arg eq "o") { |
| 1150 | B->debug(1); |
| 1151 | } elsif ($arg eq "c") { |
| 1152 | $debug_cops = 1; |
| 1153 | } elsif ($arg eq "A") { |
| 1154 | $debug_av = 1; |
| 1155 | } elsif ($arg eq "C") { |
| 1156 | $debug_cv = 1; |
| 1157 | } elsif ($arg eq "M") { |
| 1158 | $debug_mg = 1; |
| 1159 | } else { |
| 1160 | warn "ignoring unknown debug option: $arg\n"; |
| 1161 | } |
| 1162 | } |
| 1163 | } elsif ($opt eq "o") { |
| 1164 | $arg ||= shift @options; |
| 1165 | open(STDOUT, ">$arg") or return "$arg: $!\n"; |
| 1166 | } elsif ($opt eq "v") { |
| 1167 | $verbose = 1; |
| 1168 | } elsif ($opt eq "u") { |
| 1169 | $arg ||= shift @options; |
| 1170 | push(@unused_sub_packages, $arg); |
| 1171 | } elsif ($opt eq "f") { |
| 1172 | $arg ||= shift @options; |
| 1173 | if ($arg eq "cog") { |
| 1174 | $pv_copy_on_grow = 1; |
| 1175 | } elsif ($arg eq "no-cog") { |
| 1176 | $pv_copy_on_grow = 0; |
| 1177 | } |
| 1178 | } elsif ($opt eq "O") { |
| 1179 | $arg = 1 if $arg eq ""; |
| 1180 | $pv_copy_on_grow = 0; |
| 1181 | if ($arg >= 1) { |
| 1182 | # Optimisations for -O1 |
| 1183 | $pv_copy_on_grow = 1; |
| 1184 | } |
| 1185 | } |
| 1186 | } |
| 1187 | init_sections(); |
| 1188 | if (@options) { |
| 1189 | return sub { |
| 1190 | my $objname; |
| 1191 | foreach $objname (@options) { |
| 1192 | eval "save_object(\\$objname)"; |
| 1193 | } |
| 1194 | output_all(); |
| 1195 | } |
| 1196 | } else { |
| 1197 | return sub { save_main() }; |
| 1198 | } |
| 1199 | } |
| 1200 | |
| 1201 | 1; |
| 7f20e9dd |
1202 | |
| 1203 | __END__ |
| 1204 | |
| 1205 | =head1 NAME |
| 1206 | |
| 1207 | B::C - Perl compiler's C backend |
| 1208 | |
| 1209 | =head1 SYNOPSIS |
| 1210 | |
| 1211 | perl -MO=C[,OPTIONS] foo.pl |
| 1212 | |
| 1213 | =head1 DESCRIPTION |
| 1214 | |
| 1a52ab62 |
1215 | This compiler backend takes Perl source and generates C source code |
| 1216 | corresponding to the internal structures that perl uses to run |
| 1217 | your program. When the generated C source is compiled and run, it |
| 1218 | cuts out the time which perl would have taken to load and parse |
| 1219 | your program into its internal semi-compiled form. That means that |
| 1220 | compiling with this backend will not help improve the runtime |
| 1221 | execution speed of your program but may improve the start-up time. |
| 1222 | Depending on the environment in which your program runs this may be |
| 1223 | either a help or a hindrance. |
| 1224 | |
| 1225 | =head1 OPTIONS |
| 1226 | |
| 1227 | If there are any non-option arguments, they are taken to be |
| 1228 | names of objects to be saved (probably doesn't work properly yet). |
| 1229 | Without extra arguments, it saves the main program. |
| 1230 | |
| 1231 | =over 4 |
| 1232 | |
| 1233 | =item B<-ofilename> |
| 1234 | |
| 1235 | Output to filename instead of STDOUT |
| 1236 | |
| 1237 | =item B<-v> |
| 1238 | |
| 1239 | Verbose compilation (currently gives a few compilation statistics). |
| 1240 | |
| 1241 | =item B<--> |
| 1242 | |
| 1243 | Force end of options |
| 1244 | |
| 1245 | =item B<-uPackname> |
| 1246 | |
| 1247 | Force apparently unused subs from package Packname to be compiled. |
| 1248 | This allows programs to use eval "foo()" even when sub foo is never |
| 1249 | seen to be used at compile time. The down side is that any subs which |
| 1250 | really are never used also have code generated. This option is |
| 1251 | necessary, for example, if you have a signal handler foo which you |
| 1252 | initialise with C<$SIG{BAR} = "foo">. A better fix, though, is just |
| 1253 | to change it to C<$SIG{BAR} = \&foo>. You can have multiple B<-u> |
| 1254 | options. The compiler tries to figure out which packages may possibly |
| 1255 | have subs in which need compiling but the current version doesn't do |
| 1256 | it very well. In particular, it is confused by nested packages (i.e. |
| 1257 | of the form C<A::B>) where package C<A> does not contain any subs. |
| 1258 | |
| 1259 | =item B<-D> |
| 1260 | |
| 1261 | Debug options (concatenated or separate flags like C<perl -D>). |
| 1262 | |
| 1263 | =item B<-Do> |
| 1264 | |
| 1265 | OPs, prints each OP as it's processed |
| 1266 | |
| 1267 | =item B<-Dc> |
| 1268 | |
| 1269 | COPs, prints COPs as processed (incl. file & line num) |
| 1270 | |
| 1271 | =item B<-DA> |
| 1272 | |
| 1273 | prints AV information on saving |
| 1274 | |
| 1275 | =item B<-DC> |
| 1276 | |
| 1277 | prints CV information on saving |
| 1278 | |
| 1279 | =item B<-DM> |
| 1280 | |
| 1281 | prints MAGIC information on saving |
| 1282 | |
| 1283 | =item B<-f> |
| 1284 | |
| 1285 | Force optimisations on or off one at a time. |
| 1286 | |
| 1287 | =item B<-fcog> |
| 1288 | |
| 1289 | Copy-on-grow: PVs declared and initialised statically. |
| 1290 | |
| 1291 | =item B<-fno-cog> |
| 1292 | |
| 1293 | No copy-on-grow. |
| 1294 | |
| 1295 | =item B<-On> |
| 1296 | |
| 1297 | Optimisation level (n = 0, 1, 2, ...). B<-O> means B<-O1>. Currently, |
| 1298 | B<-O1> and higher set B<-fcog>. |
| 1299 | |
| 1300 | =head1 EXAMPLES |
| 1301 | |
| 1302 | perl -MO=C,-ofoo.c foo.pl |
| 1303 | perl cc_harness -o foo foo.c |
| 1304 | |
| 1305 | Note that C<cc_harness> lives in the C<B> subdirectory of your perl |
| 1306 | library directory. The utility called C<perlcc> may also be used to |
| 1307 | help make use of this compiler. |
| 1308 | |
| 1309 | perl -MO=C,-v,-DcA bar.pl > /dev/null |
| 1310 | |
| 1311 | =head1 BUGS |
| 1312 | |
| 1313 | Plenty. Current status: experimental. |
| 7f20e9dd |
1314 | |
| 1315 | =head1 AUTHOR |
| 1316 | |
| 1317 | Malcolm Beattie, C<mbeattie@sable.ox.ac.uk> |
| 1318 | |
| 1319 | =cut |
projects / p5sagit/p5-mst-13.2.git / blame