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 $c_header, <<'EOT';
73 static int optype_size[] = {
76 for ($i = 0; $i < @optype - 1; $i++) {
77 printf BYTERUN_C " sizeof(%s),\n", $optype[$i], $i;
79 printf BYTERUN_C " sizeof(%s)\n", $optype[$i], $i;
80 print BYTERUN_C <<'EOT';
83 static SV *specialsv_list[4];
85 static int bytecode_iv_overflows = 0;
86 static SV *bytecode_sv;
87 static XPV bytecode_pv;
88 static void **bytecode_obj_list;
89 static I32 bytecode_obj_list_fill = -1;
92 bset_obj_store(void *obj, I32 ix)
94 if (ix > bytecode_obj_list_fill) {
95 if (bytecode_obj_list_fill == -1)
96 New(666, bytecode_obj_list, ix + 1, void*);
98 Renew(bytecode_obj_list, ix + 1, void*);
99 bytecode_obj_list_fill = ix;
101 bytecode_obj_list[ix] = obj;
105 void byterun(struct bytestream bs)
112 for (my $i = 0; $i < @specialsv; $i++) {
113 print BYTERUN_C " specialsv_list[$i] = $specialsv[$i];\n";
116 print BYTERUN_C <<'EOT';
118 while ((insn = BGET_FGETC()) != EOF) {
123 my (@insn_name, $insn_num, $insn, $lvalue, $argtype, $flags, $fundtype);
127 s/#.*//; # remove comments
129 if (/^%number\s+(.*)/) {
132 } elsif (/%enum\s+(.*?)\s+(.*)/) {
133 create_enum($1, $2); # must come before instructions
136 ($insn, $lvalue, $argtype, $flags) = split;
137 $insn_name[$insn_num] = $insn;
138 $fundtype = $alias_from{$argtype} || $argtype;
141 # Add the case statement and code for the bytecode interpreter in byterun.c
143 printf BYTERUN_C "\t case INSN_%s:\t\t/* %d */\n\t {\n",
144 uc($insn), $insn_num;
145 my $optarg = $argtype eq "none" ? "" : ", arg";
147 printf BYTERUN_C "\t\t$argtype arg;\n\t\tBGET_%s(arg);\n", $fundtype;
150 print BYTERUN_C "\t\tBSET_$insn($lvalue$optarg);\n";
151 } elsif ($flags =~ /s/) {
152 # Store instructions store to bytecode_obj_list[arg]. "lvalue" field is rvalue.
153 print BYTERUN_C "\t\tBSET_OBJ_STORE($lvalue$optarg);\n";
155 elsif ($optarg && $lvalue ne "none") {
156 print BYTERUN_C "\t\t$lvalue = arg;\n";
158 print BYTERUN_C "\t\tbreak;\n\t }\n";
161 # Add the initialiser line for %insn_data in Asmdata.pm
163 print ASMDATA_PM <<"EOT";
164 \$insn_data{$insn} = [$insn_num, \\&PUT_$fundtype, "GET_$fundtype"];
167 # Find the next unused instruction number
168 do { $insn_num++ } while $insn_name[$insn_num];
172 # Finish off byterun.c
174 print BYTERUN_C <<'EOT';
176 croak("Illegal bytecode instruction %d\n", insn);
184 # Write the instruction and optype enum constants into byterun.h
186 open(BYTERUN_H, ">ext/ByteLoader/byterun.h") or die "ext/ByteLoader/byterun.h: $!";
187 print BYTERUN_H $c_header, <<'EOT';
190 int (*fgetc)(void *);
191 int (*fread)(char *, size_t, size_t, void *);
192 void (*freadpv)(U32, void *, XPV *);
199 my $add_enum_value = 0;
201 for ($i = 0; $i < @insn_name; $i++) {
202 $insn = uc($insn_name[$i]);
203 if (defined($insn)) {
205 if ($add_enum_value) {
206 print BYTERUN_H " INSN_$insn = $i,\t\t\t/* $i */\n";
209 print BYTERUN_H " INSN_$insn,\t\t\t/* $i */\n";
216 print BYTERUN_H " MAX_INSN = $max_insn\n};\n";
218 print BYTERUN_H "\nenum {\n";
219 for ($i = 0; $i < @optype - 1; $i++) {
220 printf BYTERUN_H " OPt_%s,\t\t/* %d */\n", $optype[$i], $i;
222 printf BYTERUN_H " OPt_%s\t\t/* %d */\n};\n\n", $optype[$i], $i;
223 print BYTERUN_H <<'EOT';
224 EXT int PL_optype_size[]
228 for ($i = 0; $i < @optype - 1; $i++) {
229 printf BYTERUN_H " sizeof(%s),\n", $optype[$i], $i;
231 printf BYTERUN_H " sizeof(%s)\n}\n", $optype[$i], $i;
232 print BYTERUN_H <<'EOT';
238 print BYTERUN_H <<'EOT';
239 #define INIT_SPECIALSV_LIST STMT_START { \
241 for ($i = 0; $i < @specialsv; $i++) {
242 print BYTERUN_H "\tPL_specialsv_list[$i] = $specialsv[$i]; \\\n";
244 print BYTERUN_H <<'EOT';
249 # Finish off insn_data and create array initialisers in Asmdata.pm
251 print ASMDATA_PM <<'EOT';
253 my ($insn_name, $insn_data);
254 while (($insn_name, $insn_data) = each %insn_data) {
255 $insn_name[$insn_data->[0]] = $insn_name;
258 @insn_name = map($_ || "unused", @insn_name);
266 B::Asmdata - Autogenerated data about Perl ops, used to generate bytecode
274 See F<ext/B/B/Asmdata.pm>.
278 Malcolm Beattie, C<mbeattie@sable.ox.ac.uk>
284 # First set instruction ord("#") to read comment to end-of-line (sneaky)
286 comment arg comment_t
287 # Then make ord("\n") into a no-op
290 # Now for the rest of the ordinary ones, beginning with \0 which is
291 # ret so that \0-terminated strings can be read properly as bytecode.
294 #opcode lvalue argtype flags
297 ldsv bytecode_sv svindex
299 stsv bytecode_sv U32 s
301 ldspecsv bytecode_sv U8 x
302 newsv bytecode_sv U8 x
306 pv_cur bytecode_pv.xpv_cur STRLEN
307 pv_free bytecode_pv none x
308 sv_upgrade bytecode_sv char x
309 sv_refcnt SvREFCNT(bytecode_sv) U32
310 sv_refcnt_add SvREFCNT(bytecode_sv) I32 x
311 sv_flags SvFLAGS(bytecode_sv) U32
312 xrv SvRV(bytecode_sv) svindex
313 xpv bytecode_sv none x
314 xiv32 SvIVX(bytecode_sv) I32
315 xiv64 SvIVX(bytecode_sv) IV64
316 xnv SvNVX(bytecode_sv) double
317 xlv_targoff LvTARGOFF(bytecode_sv) STRLEN
318 xlv_targlen LvTARGLEN(bytecode_sv) STRLEN
319 xlv_targ LvTARG(bytecode_sv) svindex
320 xlv_type LvTYPE(bytecode_sv) char
321 xbm_useful BmUSEFUL(bytecode_sv) I32
322 xbm_previous BmPREVIOUS(bytecode_sv) U16
323 xbm_rare BmRARE(bytecode_sv) U8
324 xfm_lines FmLINES(bytecode_sv) I32
325 xio_lines IoLINES(bytecode_sv) long
326 xio_page IoPAGE(bytecode_sv) long
327 xio_page_len IoPAGE_LEN(bytecode_sv) long
328 xio_lines_left IoLINES_LEFT(bytecode_sv) long
329 xio_top_name IoTOP_NAME(bytecode_sv) pvcontents
330 xio_top_gv *(SV**)&IoTOP_GV(bytecode_sv) svindex
331 xio_fmt_name IoFMT_NAME(bytecode_sv) pvcontents
332 xio_fmt_gv *(SV**)&IoFMT_GV(bytecode_sv) svindex
333 xio_bottom_name IoBOTTOM_NAME(bytecode_sv) pvcontents
334 xio_bottom_gv *(SV**)&IoBOTTOM_GV(bytecode_sv) svindex
335 xio_subprocess IoSUBPROCESS(bytecode_sv) short
336 xio_type IoTYPE(bytecode_sv) char
337 xio_flags IoFLAGS(bytecode_sv) char
338 xcv_stash *(SV**)&CvSTASH(bytecode_sv) svindex
339 xcv_start CvSTART(bytecode_sv) opindex
340 xcv_root CvROOT(bytecode_sv) opindex
341 xcv_gv *(SV**)&CvGV(bytecode_sv) svindex
342 xcv_filegv *(SV**)&CvFILEGV(bytecode_sv) svindex
343 xcv_depth CvDEPTH(bytecode_sv) long
344 xcv_padlist *(SV**)&CvPADLIST(bytecode_sv) svindex
345 xcv_outside *(SV**)&CvOUTSIDE(bytecode_sv) svindex
346 xcv_flags CvFLAGS(bytecode_sv) U8
347 av_extend bytecode_sv SSize_t x
348 av_push bytecode_sv svindex x
349 xav_fill AvFILLp(bytecode_sv) SSize_t
350 xav_max AvMAX(bytecode_sv) SSize_t
351 xav_flags AvFLAGS(bytecode_sv) U8
352 xhv_riter HvRITER(bytecode_sv) I32
353 xhv_name HvNAME(bytecode_sv) pvcontents
354 hv_store bytecode_sv svindex x
355 sv_magic bytecode_sv char x
356 mg_obj SvMAGIC(bytecode_sv)->mg_obj svindex
357 mg_private SvMAGIC(bytecode_sv)->mg_private U16
358 mg_flags SvMAGIC(bytecode_sv)->mg_flags U8
359 mg_pv SvMAGIC(bytecode_sv) pvcontents x
360 xmg_stash *(SV**)&SvSTASH(bytecode_sv) svindex
361 gv_fetchpv bytecode_sv strconst x
362 gv_stashpv bytecode_sv strconst x
363 gp_sv GvSV(bytecode_sv) svindex
364 gp_refcnt GvREFCNT(bytecode_sv) U32
365 gp_refcnt_add GvREFCNT(bytecode_sv) I32 x
366 gp_av *(SV**)&GvAV(bytecode_sv) svindex
367 gp_hv *(SV**)&GvHV(bytecode_sv) svindex
368 gp_cv *(SV**)&GvCV(bytecode_sv) svindex
369 gp_filegv *(SV**)&GvFILEGV(bytecode_sv) svindex
370 gp_io *(SV**)&GvIOp(bytecode_sv) svindex
371 gp_form *(SV**)&GvFORM(bytecode_sv) svindex
372 gp_cvgen GvCVGEN(bytecode_sv) U32
373 gp_line GvLINE(bytecode_sv) line_t
374 gp_share bytecode_sv svindex x
375 xgv_flags GvFLAGS(bytecode_sv) U8
376 op_next PL_op->op_next opindex
377 op_sibling PL_op->op_sibling opindex
378 op_ppaddr PL_op->op_ppaddr strconst x
379 op_targ PL_op->op_targ PADOFFSET
380 op_type PL_op OPCODE x
381 op_seq PL_op->op_seq U16
382 op_flags PL_op->op_flags U8
383 op_private PL_op->op_private U8
384 op_first cUNOP->op_first opindex
385 op_last cBINOP->op_last opindex
386 op_other cLOGOP->op_other opindex
387 op_true cCONDOP->op_true opindex
388 op_false cCONDOP->op_false opindex
389 op_children cLISTOP->op_children U32
390 op_pmreplroot cPMOP->op_pmreplroot opindex
391 op_pmreplrootgv *(SV**)&cPMOP->op_pmreplroot svindex
392 op_pmreplstart cPMOP->op_pmreplstart opindex
393 op_pmnext *(OP**)&cPMOP->op_pmnext opindex
394 pregcomp PL_op pvcontents x
395 op_pmflags cPMOP->op_pmflags U16
396 op_pmpermflags cPMOP->op_pmpermflags U16
397 op_sv cSVOP->op_sv svindex
398 op_gv *(SV**)&cGVOP->op_gv svindex
399 op_pv cPVOP->op_pv pvcontents
400 op_pv_tr cPVOP->op_pv op_tr_array
401 op_redoop cLOOP->op_redoop opindex
402 op_nextop cLOOP->op_nextop opindex
403 op_lastop cLOOP->op_lastop opindex
404 cop_label cCOP->cop_label pvcontents
405 cop_stash *(SV**)&cCOP->cop_stash svindex
406 cop_filegv *(SV**)&cCOP->cop_filegv svindex
407 cop_seq cCOP->cop_seq U32
408 cop_arybase cCOP->cop_arybase I32
409 cop_line cCOP->cop_line line_t
410 cop_warnings cCOP->cop_warnings svindex
411 main_start PL_main_start opindex
412 main_root PL_main_root opindex
413 curpad PL_curpad svindex x