3 U32 => [qw(PADOFFSET STRLEN)],
4 I32 => [qw(SSize_t long)],
5 U16 => [qw(OPCODE line_t short)],
7 objindex => [qw(svindex opindex)]
10 my @optype= qw(OP UNOP BINOP LOGOP CONDOP LISTOP PMOP SVOP GVOP PVOP LOOP COP);
12 # Nullsv *must* come first in the following so that the condition
13 # ($$sv == 0) can continue to be used to test (sv == Nullsv).
14 my @specialsv = qw(Nullsv &sv_undef &sv_yes &sv_no);
16 my (%alias_from, $from, $tos);
17 while (($from, $tos) = each %alias_to) {
18 map { $alias_from{$_} = $from } @$tos;
21 my $c_header = <<'EOT';
23 * Copyright (c) 1996-1998 Malcolm Beattie
25 * You may distribute under the terms of either the GNU General Public
26 * License or the Artistic License, as specified in the README file.
30 * This file is autogenerated from bytecode.pl. Changes made here will be lost.
35 ($perl_header = $c_header) =~ s{[/ ]?\*/?}{#}g;
37 unlink "byterun.c", "byterun.h", "ext/B/B/Asmdata.pm";
40 # Start with boilerplate for Asmdata.pm
42 open(ASMDATA_PM, ">ext/B/B/Asmdata.pm") or die "ext/B/B/Asmdata.pm: $!";
43 print ASMDATA_PM $perl_header, <<'EOT';
47 @EXPORT_OK = qw(%insn_data @insn_name @optype @specialsv_name);
48 use vars qw(%insn_data @insn_name @optype @specialsv_name);
51 print ASMDATA_PM <<"EOT";
52 \@optype = qw(@optype);
53 \@specialsv_name = qw(@specialsv);
55 # XXX insn_data is initialised this way because with a large
56 # %insn_data = (foo => [...], bar => [...], ...) initialiser
57 # I get a hard-to-track-down stack underflow and segfault.
61 # Boilerplate for byterun.c
63 open(BYTERUN_C, ">byterun.c") or die "byterun.c: $!";
64 print BYTERUN_C $c_header, <<'EOT';
70 bset_obj_store(void *obj, I32 ix)
72 if (ix > obj_list_fill) {
73 if (obj_list_fill == -1)
74 New(666, obj_list, ix + 1, void*);
76 Renew(obj_list, ix + 1, void*);
83 #ifdef INDIRECT_BGET_MACROS
84 void byterun(struct bytestream bs)
86 void byterun(PerlIO *fp)
87 #endif /* INDIRECT_BGET_MACROS */
91 while ((insn = BGET_FGETC()) != EOF) {
96 my (@insn_name, $insn_num, $insn, $lvalue, $argtype, $flags, $fundtype);
100 s/#.*//; # remove comments
102 if (/^%number\s+(.*)/) {
105 } elsif (/%enum\s+(.*?)\s+(.*)/) {
106 create_enum($1, $2); # must come before instructions
109 ($insn, $lvalue, $argtype, $flags) = split;
110 $insn_name[$insn_num] = $insn;
111 $fundtype = $alias_from{$argtype} || $argtype;
114 # Add the case statement and code for the bytecode interpreter in byterun.c
116 printf BYTERUN_C "\t case INSN_%s:\t\t/* %d */\n\t {\n",
117 uc($insn), $insn_num;
118 my $optarg = $argtype eq "none" ? "" : ", arg";
120 printf BYTERUN_C "\t\t$argtype arg;\n\t\tBGET_%s(arg);\n", $fundtype;
123 print BYTERUN_C "\t\tBSET_$insn($lvalue$optarg);\n";
124 } elsif ($flags =~ /s/) {
125 # Store instructions store to obj_list[arg]. "lvalue" field is rvalue.
126 print BYTERUN_C "\t\tBSET_OBJ_STORE($lvalue$optarg);\n";
128 elsif ($optarg && $lvalue ne "none") {
129 print BYTERUN_C "\t\t$lvalue = arg;\n";
131 print BYTERUN_C "\t\tbreak;\n\t }\n";
134 # Add the initialiser line for %insn_data in Asmdata.pm
136 print ASMDATA_PM <<"EOT";
137 \$insn_data{$insn} = [$insn_num, \\&PUT_$fundtype, "GET_$fundtype"];
140 # Find the next unused instruction number
141 do { $insn_num++ } while $insn_name[$insn_num];
145 # Finish off byterun.c
147 print BYTERUN_C <<'EOT';
149 croak("Illegal bytecode instruction %d\n", insn);
157 # Write the instruction and optype enum constants into byterun.h
159 open(BYTERUN_H, ">byterun.h") or die "byterun.h: $!";
160 print BYTERUN_H $c_header, <<'EOT';
161 #ifdef INDIRECT_BGET_MACROS
164 int (*fgetc)(void *);
165 int (*fread)(char *, size_t, size_t, void*);
166 void (*freadpv)(U32, void*);
168 void byterun _((struct bytestream));
170 void byterun _((PerlIO *));
171 #endif /* INDIRECT_BGET_MACROS */
173 void *bset_obj_store _((void *, I32));
179 my $add_enum_value = 0;
181 for ($i = 0; $i < @insn_name; $i++) {
182 $insn = uc($insn_name[$i]);
183 if (defined($insn)) {
185 if ($add_enum_value) {
186 print BYTERUN_H " INSN_$insn = $i,\t\t\t/* $i */\n";
189 print BYTERUN_H " INSN_$insn,\t\t\t/* $i */\n";
196 print BYTERUN_H " MAX_INSN = $max_insn\n};\n";
198 print BYTERUN_H "\nenum {\n";
199 for ($i = 0; $i < @optype - 1; $i++) {
200 printf BYTERUN_H " OPt_%s,\t\t/* %d */\n", $optype[$i], $i;
202 printf BYTERUN_H " OPt_%s\t\t/* %d */\n};\n\n", $optype[$i], $i;
203 print BYTERUN_H <<'EOT';
204 EXT int optype_size[]
208 for ($i = 0; $i < @optype - 1; $i++) {
209 printf BYTERUN_H " sizeof(%s),\n", $optype[$i], $i;
211 printf BYTERUN_H " sizeof(%s)\n}\n", $optype[$i], $i;
212 print BYTERUN_H <<'EOT';
218 printf BYTERUN_H <<'EOT', scalar(@specialsv);
219 EXT SV * specialsv_list[%d];
220 #define INIT_SPECIALSV_LIST STMT_START { \
222 for ($i = 0; $i < @specialsv; $i++) {
223 print BYTERUN_H "\tspecialsv_list[$i] = $specialsv[$i]; \\\n";
225 print BYTERUN_H <<'EOT';
230 # Finish off insn_data and create array initialisers in Asmdata.pm
232 print ASMDATA_PM <<'EOT';
234 my ($insn_name, $insn_data);
235 while (($insn_name, $insn_data) = each %insn_data) {
236 $insn_name[$insn_data->[0]] = $insn_name;
239 @insn_name = map($_ || "unused", @insn_name);
245 # First set instruction ord("#") to read comment to end-of-line (sneaky)
248 # Then make ord("\n") into a no-op
251 # Now for the rest of the ordinary ones, beginning with \0 which is
252 # ret so that \0-terminated strings can be read properly as bytecode.
255 #opcode lvalue argtype flags
267 pv_cur pv.xpv_cur STRLEN
270 sv_refcnt SvREFCNT(sv) U32
271 sv_refcnt_add SvREFCNT(sv) I32 x
272 sv_flags SvFLAGS(sv) U32
278 xlv_targoff LvTARGOFF(sv) STRLEN
279 xlv_targlen LvTARGLEN(sv) STRLEN
280 xlv_targ LvTARG(sv) svindex
281 xlv_type LvTYPE(sv) char
282 xbm_useful BmUSEFUL(sv) I32
283 xbm_previous BmPREVIOUS(sv) U16
284 xbm_rare BmRARE(sv) U8
285 xfm_lines FmLINES(sv) I32
286 xio_lines IoLINES(sv) long
287 xio_page IoPAGE(sv) long
288 xio_page_len IoPAGE_LEN(sv) long
289 xio_lines_left IoLINES_LEFT(sv) long
290 xio_top_name IoTOP_NAME(sv) pvcontents
291 xio_top_gv *(SV**)&IoTOP_GV(sv) svindex
292 xio_fmt_name IoFMT_NAME(sv) pvcontents
293 xio_fmt_gv *(SV**)&IoFMT_GV(sv) svindex
294 xio_bottom_name IoBOTTOM_NAME(sv) pvcontents
295 xio_bottom_gv *(SV**)&IoBOTTOM_GV(sv) svindex
296 xio_subprocess IoSUBPROCESS(sv) short
297 xio_type IoTYPE(sv) char
298 xio_flags IoFLAGS(sv) char
299 xcv_stash *(SV**)&CvSTASH(sv) svindex
300 xcv_start CvSTART(sv) opindex
301 xcv_root CvROOT(sv) opindex
302 xcv_gv *(SV**)&CvGV(sv) svindex
303 xcv_filegv *(SV**)&CvFILEGV(sv) svindex
304 xcv_depth CvDEPTH(sv) long
305 xcv_padlist *(SV**)&CvPADLIST(sv) svindex
306 xcv_outside *(SV**)&CvOUTSIDE(sv) svindex
307 xcv_flags CvFLAGS(sv) U8
308 av_extend sv SSize_t x
310 xav_fill AvFILLp(sv) SSize_t
311 xav_max AvMAX(sv) SSize_t
312 xav_flags AvFLAGS(sv) U8
313 xhv_riter HvRITER(sv) I32
314 xhv_name HvNAME(sv) pvcontents
315 hv_store sv svindex x
317 mg_obj SvMAGIC(sv)->mg_obj svindex
318 mg_private SvMAGIC(sv)->mg_private U16
319 mg_flags SvMAGIC(sv)->mg_flags U8
320 mg_pv SvMAGIC(sv) pvcontents x
321 xmg_stash *(SV**)&SvSTASH(sv) svindex
322 gv_fetchpv sv strconst x
323 gv_stashpv sv strconst x
324 gp_sv GvSV(sv) svindex
325 gp_refcnt GvREFCNT(sv) U32
326 gp_refcnt_add GvREFCNT(sv) I32 x
327 gp_av *(SV**)&GvAV(sv) svindex
328 gp_hv *(SV**)&GvHV(sv) svindex
329 gp_cv *(SV**)&GvCV(sv) svindex
330 gp_filegv *(SV**)&GvFILEGV(sv) svindex
331 gp_io *(SV**)&GvIOp(sv) svindex
332 gp_form *(SV**)&GvFORM(sv) svindex
333 gp_cvgen GvCVGEN(sv) U32
334 gp_line GvLINE(sv) line_t
335 gp_share sv svindex x
336 xgv_flags GvFLAGS(sv) U8
337 op_next op->op_next opindex
338 op_sibling op->op_sibling opindex
339 op_ppaddr op->op_ppaddr strconst x
340 op_targ op->op_targ PADOFFSET
342 op_seq op->op_seq U16
343 op_flags op->op_flags U8
344 op_private op->op_private U8
345 op_first cUNOP->op_first opindex
346 op_last cBINOP->op_last opindex
347 op_other cLOGOP->op_other opindex
348 op_true cCONDOP->op_true opindex
349 op_false cCONDOP->op_false opindex
350 op_children cLISTOP->op_children U32
351 op_pmreplroot cPMOP->op_pmreplroot opindex
352 op_pmreplrootgv *(SV**)&cPMOP->op_pmreplroot svindex
353 op_pmreplstart cPMOP->op_pmreplstart opindex
354 op_pmnext *(OP**)&cPMOP->op_pmnext opindex
355 pregcomp op pvcontents x
356 op_pmflags cPMOP->op_pmflags U16
357 op_pmpermflags cPMOP->op_pmpermflags U16
358 op_sv cSVOP->op_sv svindex
359 op_gv *(SV**)&cGVOP->op_gv svindex
360 op_pv cPVOP->op_pv pvcontents
361 op_pv_tr cPVOP->op_pv op_tr_array
362 op_redoop cLOOP->op_redoop opindex
363 op_nextop cLOOP->op_nextop opindex
364 op_lastop cLOOP->op_lastop opindex
365 cop_label cCOP->cop_label pvcontents
366 cop_stash *(SV**)&cCOP->cop_stash svindex
367 cop_filegv *(SV**)&cCOP->cop_filegv svindex
368 cop_seq cCOP->cop_seq U32
369 cop_arybase cCOP->cop_arybase I32
370 cop_line cCOP->cop_line line_t
371 main_start main_start opindex
372 main_root main_root opindex
373 curpad curpad svindex x