6 U32 => [qw(PADOFFSET STRLEN)],
7 I32 => [qw(SSize_t long)],
8 U16 => [qw(OPCODE line_t short)],
12 my @optype= qw(OP UNOP BINOP LOGOP CONDOP LISTOP PMOP SVOP GVOP PVOP LOOP COP);
14 # Nullsv *must* come first in the following so that the condition
15 # ($$sv == 0) can continue to be used to test (sv == Nullsv).
16 my @specialsv = qw(Nullsv &PL_sv_undef &PL_sv_yes &PL_sv_no);
18 my (%alias_from, $from, $tos);
19 while (($from, $tos) = each %alias_to) {
20 map { $alias_from{$_} = $from } @$tos;
23 my $c_header = <<'EOT';
25 * Copyright (c) 1996-1999 Malcolm Beattie
27 * You may distribute under the terms of either the GNU General Public
28 * License or the Artistic License, as specified in the README file.
32 * This file is autogenerated from bytecode.pl. Changes made here will be lost.
37 ($perl_header = $c_header) =~ s{[/ ]?\*/?}{#}g;
39 unlink "ext/ByteLoader/byterun.c", "ext/ByteLoader/byterun.h", "ext/B/B/Asmdata.pm";
42 # Start with boilerplate for Asmdata.pm
44 open(ASMDATA_PM, ">ext/B/B/Asmdata.pm") or die "ext/B/B/Asmdata.pm: $!";
45 print ASMDATA_PM $perl_header, <<'EOT';
49 @EXPORT_OK = qw(%insn_data @insn_name @optype @specialsv_name);
50 use vars qw(%insn_data @insn_name @optype @specialsv_name);
53 print ASMDATA_PM <<"EOT";
54 \@optype = qw(@optype);
55 \@specialsv_name = qw(@specialsv);
57 # XXX insn_data is initialised this way because with a large
58 # %insn_data = (foo => [...], bar => [...], ...) initialiser
59 # I get a hard-to-track-down stack underflow and segfault.
63 # Boilerplate for byterun.c
65 open(BYTERUN_C, ">ext/ByteLoader/byterun.c") or die "ext/ByteLoader/byterun.c: $!";
66 print BYTERUN_C $c_header, <<'EOT';
75 #define CALL_FPTR(fptr) (pPerl->*fptr)
77 #define PL_ppaddr (*get_ppaddr())
84 static int optype_size[] = {
87 for ($i = 0; $i < @optype - 1; $i++) {
88 printf BYTERUN_C " sizeof(%s),\n", $optype[$i], $i;
90 printf BYTERUN_C " sizeof(%s)\n", $optype[$i], $i;
91 print BYTERUN_C <<'EOT';
94 static SV *specialsv_list[4];
96 static int bytecode_iv_overflows = 0;
97 static SV *bytecode_sv;
98 static XPV bytecode_pv;
99 static void **bytecode_obj_list;
100 static I32 bytecode_obj_list_fill = -1;
103 bset_obj_store(pTHXo_ void *obj, I32 ix)
105 if (ix > bytecode_obj_list_fill) {
106 if (bytecode_obj_list_fill == -1)
107 New(666, bytecode_obj_list, ix + 1, void*);
109 Renew(bytecode_obj_list, ix + 1, void*);
110 bytecode_obj_list_fill = ix;
112 bytecode_obj_list[ix] = obj;
117 byterun(pTHXo_ struct bytestream bs)
124 for (my $i = 0; $i < @specialsv; $i++) {
125 print BYTERUN_C " specialsv_list[$i] = $specialsv[$i];\n";
128 print BYTERUN_C <<'EOT';
130 while ((insn = BGET_FGETC()) != EOF) {
135 my (@insn_name, $insn_num, $insn, $lvalue, $argtype, $flags, $fundtype);
139 s/#.*//; # remove comments
141 if (/^%number\s+(.*)/) {
144 } elsif (/%enum\s+(.*?)\s+(.*)/) {
145 create_enum($1, $2); # must come before instructions
148 ($insn, $lvalue, $argtype, $flags) = split;
149 $insn_name[$insn_num] = $insn;
150 $fundtype = $alias_from{$argtype} || $argtype;
153 # Add the case statement and code for the bytecode interpreter in byterun.c
155 printf BYTERUN_C "\t case INSN_%s:\t\t/* %d */\n\t {\n",
156 uc($insn), $insn_num;
157 my $optarg = $argtype eq "none" ? "" : ", arg";
159 printf BYTERUN_C "\t\t$argtype arg;\n\t\tBGET_%s(arg);\n", $fundtype;
162 print BYTERUN_C "\t\tBSET_$insn($lvalue$optarg);\n";
163 } elsif ($flags =~ /s/) {
164 # Store instructions store to bytecode_obj_list[arg]. "lvalue" field is rvalue.
165 print BYTERUN_C "\t\tBSET_OBJ_STORE($lvalue$optarg);\n";
167 elsif ($optarg && $lvalue ne "none") {
168 print BYTERUN_C "\t\t$lvalue = arg;\n";
170 print BYTERUN_C "\t\tbreak;\n\t }\n";
173 # Add the initialiser line for %insn_data in Asmdata.pm
175 print ASMDATA_PM <<"EOT";
176 \$insn_data{$insn} = [$insn_num, \\&PUT_$fundtype, "GET_$fundtype"];
179 # Find the next unused instruction number
180 do { $insn_num++ } while $insn_name[$insn_num];
184 # Finish off byterun.c
186 print BYTERUN_C <<'EOT';
188 Perl_croak(aTHX_ "Illegal bytecode instruction %d\n", insn);
196 # Write the instruction and optype enum constants into byterun.h
198 open(BYTERUN_H, ">ext/ByteLoader/byterun.h") or die "ext/ByteLoader/byterun.h: $!";
199 print BYTERUN_H $c_header, <<'EOT';
202 int (*pfgetc)(void *);
203 int (*pfread)(char *, size_t, size_t, void *);
204 void (*pfreadpv)(U32, void *, XPV *);
211 my $add_enum_value = 0;
213 for ($i = 0; $i < @insn_name; $i++) {
214 $insn = uc($insn_name[$i]);
215 if (defined($insn)) {
217 if ($add_enum_value) {
218 print BYTERUN_H " INSN_$insn = $i,\t\t\t/* $i */\n";
221 print BYTERUN_H " INSN_$insn,\t\t\t/* $i */\n";
228 print BYTERUN_H " MAX_INSN = $max_insn\n};\n";
230 print BYTERUN_H "\nenum {\n";
231 for ($i = 0; $i < @optype - 1; $i++) {
232 printf BYTERUN_H " OPt_%s,\t\t/* %d */\n", $optype[$i], $i;
234 printf BYTERUN_H " OPt_%s\t\t/* %d */\n};\n\n", $optype[$i], $i;
235 print BYTERUN_H <<'EOT';
236 EXT int PL_optype_size[]
240 for ($i = 0; $i < @optype - 1; $i++) {
241 printf BYTERUN_H " sizeof(%s),\n", $optype[$i], $i;
243 printf BYTERUN_H " sizeof(%s)\n}\n", $optype[$i], $i;
244 print BYTERUN_H <<'EOT';
250 print BYTERUN_H <<'EOT';
251 EXT void byterun(pTHXo_ struct bytestream bs);
253 #define INIT_SPECIALSV_LIST STMT_START { \
255 for ($i = 0; $i < @specialsv; $i++) {
256 print BYTERUN_H "\tPL_specialsv_list[$i] = $specialsv[$i]; \\\n";
258 print BYTERUN_H <<'EOT';
263 # Finish off insn_data and create array initialisers in Asmdata.pm
265 print ASMDATA_PM <<'EOT';
267 my ($insn_name, $insn_data);
268 while (($insn_name, $insn_data) = each %insn_data) {
269 $insn_name[$insn_data->[0]] = $insn_name;
272 @insn_name = map($_ || "unused", @insn_name);
280 B::Asmdata - Autogenerated data about Perl ops, used to generate bytecode
288 See F<ext/B/B/Asmdata.pm>.
292 Malcolm Beattie, C<mbeattie@sable.ox.ac.uk>
298 # First set instruction ord("#") to read comment to end-of-line (sneaky)
300 comment arg comment_t
301 # Then make ord("\n") into a no-op
304 # Now for the rest of the ordinary ones, beginning with \0 which is
305 # ret so that \0-terminated strings can be read properly as bytecode.
308 #opcode lvalue argtype flags
311 ldsv bytecode_sv svindex
313 stsv bytecode_sv U32 s
315 ldspecsv bytecode_sv U8 x
316 newsv bytecode_sv U8 x
320 pv_cur bytecode_pv.xpv_cur STRLEN
321 pv_free bytecode_pv none x
322 sv_upgrade bytecode_sv char x
323 sv_refcnt SvREFCNT(bytecode_sv) U32
324 sv_refcnt_add SvREFCNT(bytecode_sv) I32 x
325 sv_flags SvFLAGS(bytecode_sv) U32
326 xrv SvRV(bytecode_sv) svindex
327 xpv bytecode_sv none x
328 xiv32 SvIVX(bytecode_sv) I32
329 xiv64 SvIVX(bytecode_sv) IV64
330 xnv SvNVX(bytecode_sv) double
331 xlv_targoff LvTARGOFF(bytecode_sv) STRLEN
332 xlv_targlen LvTARGLEN(bytecode_sv) STRLEN
333 xlv_targ LvTARG(bytecode_sv) svindex
334 xlv_type LvTYPE(bytecode_sv) char
335 xbm_useful BmUSEFUL(bytecode_sv) I32
336 xbm_previous BmPREVIOUS(bytecode_sv) U16
337 xbm_rare BmRARE(bytecode_sv) U8
338 xfm_lines FmLINES(bytecode_sv) I32
339 xio_lines IoLINES(bytecode_sv) long
340 xio_page IoPAGE(bytecode_sv) long
341 xio_page_len IoPAGE_LEN(bytecode_sv) long
342 xio_lines_left IoLINES_LEFT(bytecode_sv) long
343 xio_top_name IoTOP_NAME(bytecode_sv) pvcontents
344 xio_top_gv *(SV**)&IoTOP_GV(bytecode_sv) svindex
345 xio_fmt_name IoFMT_NAME(bytecode_sv) pvcontents
346 xio_fmt_gv *(SV**)&IoFMT_GV(bytecode_sv) svindex
347 xio_bottom_name IoBOTTOM_NAME(bytecode_sv) pvcontents
348 xio_bottom_gv *(SV**)&IoBOTTOM_GV(bytecode_sv) svindex
349 xio_subprocess IoSUBPROCESS(bytecode_sv) short
350 xio_type IoTYPE(bytecode_sv) char
351 xio_flags IoFLAGS(bytecode_sv) char
352 xcv_stash *(SV**)&CvSTASH(bytecode_sv) svindex
353 xcv_start CvSTART(bytecode_sv) opindex
354 xcv_root CvROOT(bytecode_sv) opindex
355 xcv_gv *(SV**)&CvGV(bytecode_sv) svindex
356 xcv_filegv *(SV**)&CvFILEGV(bytecode_sv) svindex
357 xcv_depth CvDEPTH(bytecode_sv) long
358 xcv_padlist *(SV**)&CvPADLIST(bytecode_sv) svindex
359 xcv_outside *(SV**)&CvOUTSIDE(bytecode_sv) svindex
360 xcv_flags CvFLAGS(bytecode_sv) U8
361 av_extend bytecode_sv SSize_t x
362 av_push bytecode_sv svindex x
363 xav_fill AvFILLp(bytecode_sv) SSize_t
364 xav_max AvMAX(bytecode_sv) SSize_t
365 xav_flags AvFLAGS(bytecode_sv) U8
366 xhv_riter HvRITER(bytecode_sv) I32
367 xhv_name HvNAME(bytecode_sv) pvcontents
368 hv_store bytecode_sv svindex x
369 sv_magic bytecode_sv char x
370 mg_obj SvMAGIC(bytecode_sv)->mg_obj svindex
371 mg_private SvMAGIC(bytecode_sv)->mg_private U16
372 mg_flags SvMAGIC(bytecode_sv)->mg_flags U8
373 mg_pv SvMAGIC(bytecode_sv) pvcontents x
374 xmg_stash *(SV**)&SvSTASH(bytecode_sv) svindex
375 gv_fetchpv bytecode_sv strconst x
376 gv_stashpv bytecode_sv strconst x
377 gp_sv GvSV(bytecode_sv) svindex
378 gp_refcnt GvREFCNT(bytecode_sv) U32
379 gp_refcnt_add GvREFCNT(bytecode_sv) I32 x
380 gp_av *(SV**)&GvAV(bytecode_sv) svindex
381 gp_hv *(SV**)&GvHV(bytecode_sv) svindex
382 gp_cv *(SV**)&GvCV(bytecode_sv) svindex
383 gp_filegv *(SV**)&GvFILEGV(bytecode_sv) svindex
384 gp_io *(SV**)&GvIOp(bytecode_sv) svindex
385 gp_form *(SV**)&GvFORM(bytecode_sv) svindex
386 gp_cvgen GvCVGEN(bytecode_sv) U32
387 gp_line GvLINE(bytecode_sv) line_t
388 gp_share bytecode_sv svindex x
389 xgv_flags GvFLAGS(bytecode_sv) U8
390 op_next PL_op->op_next opindex
391 op_sibling PL_op->op_sibling opindex
392 op_ppaddr PL_op->op_ppaddr strconst x
393 op_targ PL_op->op_targ PADOFFSET
394 op_type PL_op OPCODE x
395 op_seq PL_op->op_seq U16
396 op_flags PL_op->op_flags U8
397 op_private PL_op->op_private U8
398 op_first cUNOP->op_first opindex
399 op_last cBINOP->op_last opindex
400 op_other cLOGOP->op_other opindex
401 op_true cCONDOP->op_true opindex
402 op_false cCONDOP->op_false opindex
403 op_children cLISTOP->op_children U32
404 op_pmreplroot cPMOP->op_pmreplroot opindex
405 op_pmreplrootgv *(SV**)&cPMOP->op_pmreplroot svindex
406 op_pmreplstart cPMOP->op_pmreplstart opindex
407 op_pmnext *(OP**)&cPMOP->op_pmnext opindex
408 pregcomp PL_op pvcontents x
409 op_pmflags cPMOP->op_pmflags U16
410 op_pmpermflags cPMOP->op_pmpermflags U16
411 op_sv cSVOP->op_sv svindex
412 op_gv *(SV**)&cGVOP->op_gv svindex
413 op_pv cPVOP->op_pv pvcontents
414 op_pv_tr cPVOP->op_pv op_tr_array
415 op_redoop cLOOP->op_redoop opindex
416 op_nextop cLOOP->op_nextop opindex
417 op_lastop cLOOP->op_lastop opindex
418 cop_label cCOP->cop_label pvcontents
419 cop_stash *(SV**)&cCOP->cop_stash svindex
420 cop_filegv *(SV**)&cCOP->cop_filegv svindex
421 cop_seq cCOP->cop_seq U32
422 cop_arybase cCOP->cop_arybase I32
423 cop_line cCOP->cop_line line_t
424 cop_warnings cCOP->cop_warnings svindex
425 main_start PL_main_start opindex
426 main_root PL_main_root opindex
427 curpad PL_curpad svindex x