3 U32 => [qw(PADOFFSET STRLEN)],
4 I32 => [qw(SSize_t long)],
5 U16 => [qw(OPCODE line_t short)],
9 my @optype= qw(OP UNOP BINOP LOGOP CONDOP LISTOP PMOP SVOP GVOP PVOP LOOP COP);
11 # Nullsv *must* come first in the following so that the condition
12 # ($$sv == 0) can continue to be used to test (sv == Nullsv).
13 my @specialsv = qw(Nullsv &PL_sv_undef &PL_sv_yes &PL_sv_no);
15 my (%alias_from, $from, $tos);
16 while (($from, $tos) = each %alias_to) {
17 map { $alias_from{$_} = $from } @$tos;
20 my $c_header = <<'EOT';
22 * Copyright (c) 1996-1998 Malcolm Beattie
24 * You may distribute under the terms of either the GNU General Public
25 * License or the Artistic License, as specified in the README file.
29 * This file is autogenerated from bytecode.pl. Changes made here will be lost.
34 ($perl_header = $c_header) =~ s{[/ ]?\*/?}{#}g;
36 unlink "byterun.c", "byterun.h", "ext/B/B/Asmdata.pm";
39 # Start with boilerplate for Asmdata.pm
41 open(ASMDATA_PM, ">ext/B/B/Asmdata.pm") or die "ext/B/B/Asmdata.pm: $!";
42 print ASMDATA_PM $perl_header, <<'EOT';
46 @EXPORT_OK = qw(%insn_data @insn_name @optype @specialsv_name);
47 use vars qw(%insn_data @insn_name @optype @specialsv_name);
50 print ASMDATA_PM <<"EOT";
51 \@optype = qw(@optype);
52 \@specialsv_name = qw(@specialsv);
54 # XXX insn_data is initialised this way because with a large
55 # %insn_data = (foo => [...], bar => [...], ...) initialiser
56 # I get a hard-to-track-down stack underflow and segfault.
60 # Boilerplate for byterun.c
62 open(BYTERUN_C, ">byterun.c") or die "byterun.c: $!";
63 print BYTERUN_C $c_header, <<'EOT';
69 bset_obj_store(void *obj, I32 ix)
71 if (ix > PL_bytecode_obj_list_fill) {
72 if (PL_bytecode_obj_list_fill == -1)
73 New(666, PL_bytecode_obj_list, ix + 1, void*);
75 Renew(PL_bytecode_obj_list, ix + 1, void*);
76 PL_bytecode_obj_list_fill = ix;
78 PL_bytecode_obj_list[ix] = obj;
82 #ifdef INDIRECT_BGET_MACROS
83 void byterun(struct bytestream bs)
85 void byterun(PerlIO *fp)
86 #endif /* INDIRECT_BGET_MACROS */
90 while ((insn = BGET_FGETC()) != EOF) {
95 my (@insn_name, $insn_num, $insn, $lvalue, $argtype, $flags, $fundtype);
99 s/#.*//; # remove comments
101 if (/^%number\s+(.*)/) {
104 } elsif (/%enum\s+(.*?)\s+(.*)/) {
105 create_enum($1, $2); # must come before instructions
108 ($insn, $lvalue, $argtype, $flags) = split;
109 $insn_name[$insn_num] = $insn;
110 $fundtype = $alias_from{$argtype} || $argtype;
113 # Add the case statement and code for the bytecode interpreter in byterun.c
115 printf BYTERUN_C "\t case INSN_%s:\t\t/* %d */\n\t {\n",
116 uc($insn), $insn_num;
117 my $optarg = $argtype eq "none" ? "" : ", arg";
119 printf BYTERUN_C "\t\t$argtype arg;\n\t\tBGET_%s(arg);\n", $fundtype;
122 print BYTERUN_C "\t\tBSET_$insn($lvalue$optarg);\n";
123 } elsif ($flags =~ /s/) {
124 # Store instructions store to PL_bytecode_obj_list[arg]. "lvalue" field is rvalue.
125 print BYTERUN_C "\t\tBSET_OBJ_STORE($lvalue$optarg);\n";
127 elsif ($optarg && $lvalue ne "none") {
128 print BYTERUN_C "\t\t$lvalue = arg;\n";
130 print BYTERUN_C "\t\tbreak;\n\t }\n";
133 # Add the initialiser line for %insn_data in Asmdata.pm
135 print ASMDATA_PM <<"EOT";
136 \$insn_data{$insn} = [$insn_num, \\&PUT_$fundtype, "GET_$fundtype"];
139 # Find the next unused instruction number
140 do { $insn_num++ } while $insn_name[$insn_num];
144 # Finish off byterun.c
146 print BYTERUN_C <<'EOT';
148 croak("Illegal bytecode instruction %d\n", insn);
156 # Write the instruction and optype enum constants into byterun.h
158 open(BYTERUN_H, ">byterun.h") or die "byterun.h: $!";
159 print BYTERUN_H $c_header, <<'EOT';
160 #ifdef INDIRECT_BGET_MACROS
163 int (*fgetc)(void *);
164 int (*fread)(char *, size_t, size_t, void*);
165 void (*freadpv)(U32, void*);
167 #endif /* INDIRECT_BGET_MACROS */
169 void *bset_obj_store _((void *, I32));
175 my $add_enum_value = 0;
177 for ($i = 0; $i < @insn_name; $i++) {
178 $insn = uc($insn_name[$i]);
179 if (defined($insn)) {
181 if ($add_enum_value) {
182 print BYTERUN_H " INSN_$insn = $i,\t\t\t/* $i */\n";
185 print BYTERUN_H " INSN_$insn,\t\t\t/* $i */\n";
192 print BYTERUN_H " MAX_INSN = $max_insn\n};\n";
194 print BYTERUN_H "\nenum {\n";
195 for ($i = 0; $i < @optype - 1; $i++) {
196 printf BYTERUN_H " OPt_%s,\t\t/* %d */\n", $optype[$i], $i;
198 printf BYTERUN_H " OPt_%s\t\t/* %d */\n};\n\n", $optype[$i], $i;
199 print BYTERUN_H <<'EOT';
200 EXT int optype_size[]
204 for ($i = 0; $i < @optype - 1; $i++) {
205 printf BYTERUN_H " sizeof(%s),\n", $optype[$i], $i;
207 printf BYTERUN_H " sizeof(%s)\n}\n", $optype[$i], $i;
208 print BYTERUN_H <<'EOT';
214 print BYTERUN_H <<'EOT';
215 #define INIT_SPECIALSV_LIST STMT_START { \
217 for ($i = 0; $i < @specialsv; $i++) {
218 print BYTERUN_H "\tPL_specialsv_list[$i] = $specialsv[$i]; \\\n";
220 print BYTERUN_H <<'EOT';
225 # Finish off insn_data and create array initialisers in Asmdata.pm
227 print ASMDATA_PM <<'EOT';
229 my ($insn_name, $insn_data);
230 while (($insn_name, $insn_data) = each %insn_data) {
231 $insn_name[$insn_data->[0]] = $insn_name;
234 @insn_name = map($_ || "unused", @insn_name);
242 B::Asmdata - Autogenerated data about Perl ops, used to generate bytecode
250 See F<ext/B/B/Asmdata.pm>.
254 Malcolm Beattie, C<mbeattie@sable.ox.ac.uk>
260 # First set instruction ord("#") to read comment to end-of-line (sneaky)
262 comment arg comment_t
263 # Then make ord("\n") into a no-op
266 # Now for the rest of the ordinary ones, beginning with \0 which is
267 # ret so that \0-terminated strings can be read properly as bytecode.
270 #opcode lvalue argtype flags
273 ldsv PL_bytecode_sv svindex
275 stsv PL_bytecode_sv U32 s
277 ldspecsv PL_bytecode_sv U8 x
278 newsv PL_bytecode_sv U8 x
282 pv_cur PL_bytecode_pv.xpv_cur STRLEN
283 pv_free PL_bytecode_pv none x
284 sv_upgrade PL_bytecode_sv char x
285 sv_refcnt SvREFCNT(PL_bytecode_sv) U32
286 sv_refcnt_add SvREFCNT(PL_bytecode_sv) I32 x
287 sv_flags SvFLAGS(PL_bytecode_sv) U32
288 xrv SvRV(PL_bytecode_sv) svindex
289 xpv PL_bytecode_sv none x
290 xiv32 SvIVX(PL_bytecode_sv) I32
291 xiv64 SvIVX(PL_bytecode_sv) IV64
292 xnv SvNVX(PL_bytecode_sv) double
293 xlv_targoff LvTARGOFF(PL_bytecode_sv) STRLEN
294 xlv_targlen LvTARGLEN(PL_bytecode_sv) STRLEN
295 xlv_targ LvTARG(PL_bytecode_sv) svindex
296 xlv_type LvTYPE(PL_bytecode_sv) char
297 xbm_useful BmUSEFUL(PL_bytecode_sv) I32
298 xbm_previous BmPREVIOUS(PL_bytecode_sv) U16
299 xbm_rare BmRARE(PL_bytecode_sv) U8
300 xfm_lines FmLINES(PL_bytecode_sv) I32
301 xio_lines IoLINES(PL_bytecode_sv) long
302 xio_page IoPAGE(PL_bytecode_sv) long
303 xio_page_len IoPAGE_LEN(PL_bytecode_sv) long
304 xio_lines_left IoLINES_LEFT(PL_bytecode_sv) long
305 xio_top_name IoTOP_NAME(PL_bytecode_sv) pvcontents
306 xio_top_gv *(SV**)&IoTOP_GV(PL_bytecode_sv) svindex
307 xio_fmt_name IoFMT_NAME(PL_bytecode_sv) pvcontents
308 xio_fmt_gv *(SV**)&IoFMT_GV(PL_bytecode_sv) svindex
309 xio_bottom_name IoBOTTOM_NAME(PL_bytecode_sv) pvcontents
310 xio_bottom_gv *(SV**)&IoBOTTOM_GV(PL_bytecode_sv) svindex
311 xio_subprocess IoSUBPROCESS(PL_bytecode_sv) short
312 xio_type IoTYPE(PL_bytecode_sv) char
313 xio_flags IoFLAGS(PL_bytecode_sv) char
314 xcv_stash *(SV**)&CvSTASH(PL_bytecode_sv) svindex
315 xcv_start CvSTART(PL_bytecode_sv) opindex
316 xcv_root CvROOT(PL_bytecode_sv) opindex
317 xcv_gv *(SV**)&CvGV(PL_bytecode_sv) svindex
318 xcv_filegv *(SV**)&CvFILEGV(PL_bytecode_sv) svindex
319 xcv_depth CvDEPTH(PL_bytecode_sv) long
320 xcv_padlist *(SV**)&CvPADLIST(PL_bytecode_sv) svindex
321 xcv_outside *(SV**)&CvOUTSIDE(PL_bytecode_sv) svindex
322 xcv_flags CvFLAGS(PL_bytecode_sv) U8
323 av_extend PL_bytecode_sv SSize_t x
324 av_push PL_bytecode_sv svindex x
325 xav_fill AvFILLp(PL_bytecode_sv) SSize_t
326 xav_max AvMAX(PL_bytecode_sv) SSize_t
327 xav_flags AvFLAGS(PL_bytecode_sv) U8
328 xhv_riter HvRITER(PL_bytecode_sv) I32
329 xhv_name HvNAME(PL_bytecode_sv) pvcontents
330 hv_store PL_bytecode_sv svindex x
331 sv_magic PL_bytecode_sv char x
332 mg_obj SvMAGIC(PL_bytecode_sv)->mg_obj svindex
333 mg_private SvMAGIC(PL_bytecode_sv)->mg_private U16
334 mg_flags SvMAGIC(PL_bytecode_sv)->mg_flags U8
335 mg_pv SvMAGIC(PL_bytecode_sv) pvcontents x
336 xmg_stash *(SV**)&SvSTASH(PL_bytecode_sv) svindex
337 gv_fetchpv PL_bytecode_sv strconst x
338 gv_stashpv PL_bytecode_sv strconst x
339 gp_sv GvSV(PL_bytecode_sv) svindex
340 gp_refcnt GvREFCNT(PL_bytecode_sv) U32
341 gp_refcnt_add GvREFCNT(PL_bytecode_sv) I32 x
342 gp_av *(SV**)&GvAV(PL_bytecode_sv) svindex
343 gp_hv *(SV**)&GvHV(PL_bytecode_sv) svindex
344 gp_cv *(SV**)&GvCV(PL_bytecode_sv) svindex
345 gp_filegv *(SV**)&GvFILEGV(PL_bytecode_sv) svindex
346 gp_io *(SV**)&GvIOp(PL_bytecode_sv) svindex
347 gp_form *(SV**)&GvFORM(PL_bytecode_sv) svindex
348 gp_cvgen GvCVGEN(PL_bytecode_sv) U32
349 gp_line GvLINE(PL_bytecode_sv) line_t
350 gp_share PL_bytecode_sv svindex x
351 xgv_flags GvFLAGS(PL_bytecode_sv) U8
352 op_next PL_op->op_next opindex
353 op_sibling PL_op->op_sibling opindex
354 op_ppaddr PL_op->op_ppaddr strconst x
355 op_targ PL_op->op_targ PADOFFSET
356 op_type PL_op OPCODE x
357 op_seq PL_op->op_seq U16
358 op_flags PL_op->op_flags U8
359 op_private PL_op->op_private U8
360 op_first cUNOP->op_first opindex
361 op_last cBINOP->op_last opindex
362 op_other cLOGOP->op_other opindex
363 op_true cCONDOP->op_true opindex
364 op_false cCONDOP->op_false opindex
365 op_children cLISTOP->op_children U32
366 op_pmreplroot cPMOP->op_pmreplroot opindex
367 op_pmreplrootgv *(SV**)&cPMOP->op_pmreplroot svindex
368 op_pmreplstart cPMOP->op_pmreplstart opindex
369 op_pmnext *(OP**)&cPMOP->op_pmnext opindex
370 pregcomp PL_op pvcontents x
371 op_pmflags cPMOP->op_pmflags U16
372 op_pmpermflags cPMOP->op_pmpermflags U16
373 op_sv cSVOP->op_sv svindex
374 op_gv *(SV**)&cGVOP->op_gv svindex
375 op_pv cPVOP->op_pv pvcontents
376 op_pv_tr cPVOP->op_pv op_tr_array
377 op_redoop cLOOP->op_redoop opindex
378 op_nextop cLOOP->op_nextop opindex
379 op_lastop cLOOP->op_lastop opindex
380 cop_label cCOP->cop_label pvcontents
381 cop_stash *(SV**)&cCOP->cop_stash svindex
382 cop_filegv *(SV**)&cCOP->cop_filegv svindex
383 cop_seq cCOP->cop_seq U32
384 cop_arybase cCOP->cop_arybase I32
385 cop_line cCOP->cop_line line_t
386 main_start PL_main_start opindex
387 main_root PL_main_root opindex
388 curpad PL_curpad svindex x