optimize XSUBs to use targets if the -nooptimize xsubpp option is
[p5sagit/p5-mst-13.2.git] / bytecode.pl
CommitLineData
73f0cc2d 1BEGIN {
2 push @INC, './lib';
3}
a8a597b2 4use strict;
5my %alias_to = (
6 U32 => [qw(PADOFFSET STRLEN)],
7 I32 => [qw(SSize_t long)],
8 U16 => [qw(OPCODE line_t short)],
9 U8 => [qw(char)],
a8a597b2 10);
11
7934575e 12my @optype= qw(OP UNOP BINOP LOGOP LISTOP PMOP SVOP PADOP PVOP LOOP COP);
a8a597b2 13
14# Nullsv *must* come first in the following so that the condition
15# ($$sv == 0) can continue to be used to test (sv == Nullsv).
6b88bc9c 16my @specialsv = qw(Nullsv &PL_sv_undef &PL_sv_yes &PL_sv_no);
a8a597b2 17
18my (%alias_from, $from, $tos);
19while (($from, $tos) = each %alias_to) {
20 map { $alias_from{$_} = $from } @$tos;
21}
22
23my $c_header = <<'EOT';
24/*
4eb8286e 25 * Copyright (c) 1996-1999 Malcolm Beattie
a8a597b2 26 *
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.
29 *
30 */
31/*
32 * This file is autogenerated from bytecode.pl. Changes made here will be lost.
33 */
34EOT
35
36my $perl_header;
37($perl_header = $c_header) =~ s{[/ ]?\*/?}{#}g;
38
e8edd1e6 39unlink "ext/ByteLoader/byterun.c", "ext/ByteLoader/byterun.h", "ext/B/B/Asmdata.pm";
a8a597b2 40
41#
42# Start with boilerplate for Asmdata.pm
43#
33b839e2 44open(ASMDATA_PM, ">ext/B/B/Asmdata.pm") or die "ext/B/B/Asmdata.pm: $!";
a8a597b2 45print ASMDATA_PM $perl_header, <<'EOT';
46package B::Asmdata;
47use Exporter;
48@ISA = qw(Exporter);
49@EXPORT_OK = qw(%insn_data @insn_name @optype @specialsv_name);
50use vars qw(%insn_data @insn_name @optype @specialsv_name);
51
52EOT
53print ASMDATA_PM <<"EOT";
54\@optype = qw(@optype);
55\@specialsv_name = qw(@specialsv);
56
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.
60EOT
61
62#
63# Boilerplate for byterun.c
64#
e8edd1e6 65open(BYTERUN_C, ">ext/ByteLoader/byterun.c") or die "ext/ByteLoader/byterun.c: $!";
a8a597b2 66print BYTERUN_C $c_header, <<'EOT';
67
c5be433b 68#define PERL_NO_GET_CONTEXT
a8a597b2 69#include "EXTERN.h"
70#include "perl.h"
0cb96387 71#define NO_XSLOCKS
72#include "XSUB.h"
73
74#ifdef PERL_OBJECT
75#undef CALL_FPTR
76#define CALL_FPTR(fptr) (pPerl->*fptr)
77#undef PL_ppaddr
78#define PL_ppaddr (*get_ppaddr())
79#endif
80
e8edd1e6 81#include "byterun.h"
82#include "bytecode.h"
83
0cb96387 84
e8edd1e6 85static int optype_size[] = {
86EOT
87my $i = 0;
88for ($i = 0; $i < @optype - 1; $i++) {
89 printf BYTERUN_C " sizeof(%s),\n", $optype[$i], $i;
90}
91printf BYTERUN_C " sizeof(%s)\n", $optype[$i], $i;
92print BYTERUN_C <<'EOT';
93};
94
95static SV *specialsv_list[4];
96
97static int bytecode_iv_overflows = 0;
98static SV *bytecode_sv;
99static XPV bytecode_pv;
100static void **bytecode_obj_list;
101static I32 bytecode_obj_list_fill = -1;
d613ef02 102
103void *
0cb96387 104bset_obj_store(pTHXo_ void *obj, I32 ix)
d613ef02 105{
e8edd1e6 106 if (ix > bytecode_obj_list_fill) {
107 if (bytecode_obj_list_fill == -1)
108 New(666, bytecode_obj_list, ix + 1, void*);
d613ef02 109 else
e8edd1e6 110 Renew(bytecode_obj_list, ix + 1, void*);
111 bytecode_obj_list_fill = ix;
d613ef02 112 }
e8edd1e6 113 bytecode_obj_list[ix] = obj;
d613ef02 114 return obj;
115}
a8a597b2 116
cea2e8a9 117void
0cb96387 118byterun(pTHXo_ struct bytestream bs)
a8a597b2 119{
120 dTHR;
121 int insn;
e8edd1e6 122
123EOT
124
125for (my $i = 0; $i < @specialsv; $i++) {
126 print BYTERUN_C " specialsv_list[$i] = $specialsv[$i];\n";
127}
128
129print BYTERUN_C <<'EOT';
130
47358472 131 while ((insn = BGET_FGETC()) != EOF) {
a8a597b2 132 switch (insn) {
133EOT
134
135
136my (@insn_name, $insn_num, $insn, $lvalue, $argtype, $flags, $fundtype);
137
138while (<DATA>) {
139 chop;
140 s/#.*//; # remove comments
141 next unless length;
142 if (/^%number\s+(.*)/) {
143 $insn_num = $1;
144 next;
145 } elsif (/%enum\s+(.*?)\s+(.*)/) {
146 create_enum($1, $2); # must come before instructions
147 next;
148 }
149 ($insn, $lvalue, $argtype, $flags) = split;
150 $insn_name[$insn_num] = $insn;
151 $fundtype = $alias_from{$argtype} || $argtype;
152
153 #
154 # Add the case statement and code for the bytecode interpreter in byterun.c
155 #
156 printf BYTERUN_C "\t case INSN_%s:\t\t/* %d */\n\t {\n",
157 uc($insn), $insn_num;
158 my $optarg = $argtype eq "none" ? "" : ", arg";
159 if ($optarg) {
160 printf BYTERUN_C "\t\t$argtype arg;\n\t\tBGET_%s(arg);\n", $fundtype;
161 }
162 if ($flags =~ /x/) {
163 print BYTERUN_C "\t\tBSET_$insn($lvalue$optarg);\n";
164 } elsif ($flags =~ /s/) {
e8edd1e6 165 # Store instructions store to bytecode_obj_list[arg]. "lvalue" field is rvalue.
a8a597b2 166 print BYTERUN_C "\t\tBSET_OBJ_STORE($lvalue$optarg);\n";
167 }
168 elsif ($optarg && $lvalue ne "none") {
169 print BYTERUN_C "\t\t$lvalue = arg;\n";
170 }
171 print BYTERUN_C "\t\tbreak;\n\t }\n";
172
173 #
174 # Add the initialiser line for %insn_data in Asmdata.pm
175 #
176 print ASMDATA_PM <<"EOT";
177\$insn_data{$insn} = [$insn_num, \\&PUT_$fundtype, "GET_$fundtype"];
178EOT
179
180 # Find the next unused instruction number
181 do { $insn_num++ } while $insn_name[$insn_num];
182}
183
184#
185# Finish off byterun.c
186#
187print BYTERUN_C <<'EOT';
188 default:
cea2e8a9 189 Perl_croak(aTHX_ "Illegal bytecode instruction %d\n", insn);
a8a597b2 190 /* NOTREACHED */
191 }
192 }
193}
194EOT
195
196#
197# Write the instruction and optype enum constants into byterun.h
198#
e8edd1e6 199open(BYTERUN_H, ">ext/ByteLoader/byterun.h") or die "ext/ByteLoader/byterun.h: $!";
a8a597b2 200print BYTERUN_H $c_header, <<'EOT';
a8a597b2 201struct bytestream {
202 void *data;
4f63d024 203 int (*pfgetc)(void *);
204 int (*pfread)(char *, size_t, size_t, void *);
205 void (*pfreadpv)(U32, void *, XPV *);
a8a597b2 206};
a8a597b2 207
a8a597b2 208enum {
209EOT
210
a8a597b2 211my $add_enum_value = 0;
212my $max_insn;
213for ($i = 0; $i < @insn_name; $i++) {
214 $insn = uc($insn_name[$i]);
215 if (defined($insn)) {
216 $max_insn = $i;
217 if ($add_enum_value) {
218 print BYTERUN_H " INSN_$insn = $i,\t\t\t/* $i */\n";
219 $add_enum_value = 0;
220 } else {
221 print BYTERUN_H " INSN_$insn,\t\t\t/* $i */\n";
222 }
223 } else {
224 $add_enum_value = 1;
225 }
226}
227
228print BYTERUN_H " MAX_INSN = $max_insn\n};\n";
229
230print BYTERUN_H "\nenum {\n";
231for ($i = 0; $i < @optype - 1; $i++) {
232 printf BYTERUN_H " OPt_%s,\t\t/* %d */\n", $optype[$i], $i;
233}
234printf BYTERUN_H " OPt_%s\t\t/* %d */\n};\n\n", $optype[$i], $i;
a8a597b2 235
fe3a57c4 236print BYTERUN_H <<'EOT';
b78218b7 237extern void byterun(pTHXo_ struct bytestream bs);
0cb96387 238
a8a597b2 239#define INIT_SPECIALSV_LIST STMT_START { \
240EOT
241for ($i = 0; $i < @specialsv; $i++) {
6b88bc9c 242 print BYTERUN_H "\tPL_specialsv_list[$i] = $specialsv[$i]; \\\n";
a8a597b2 243}
244print BYTERUN_H <<'EOT';
33b839e2 245 } STMT_END
a8a597b2 246EOT
247
248#
249# Finish off insn_data and create array initialisers in Asmdata.pm
250#
251print ASMDATA_PM <<'EOT';
252
253my ($insn_name, $insn_data);
254while (($insn_name, $insn_data) = each %insn_data) {
255 $insn_name[$insn_data->[0]] = $insn_name;
256}
257# Fill in any gaps
258@insn_name = map($_ || "unused", @insn_name);
259
2601;
42d3a99d 261
262__END__
263
264=head1 NAME
265
266B::Asmdata - Autogenerated data about Perl ops, used to generate bytecode
267
268=head1 SYNOPSIS
269
270 use Asmdata;
271
272=head1 DESCRIPTION
273
274See F<ext/B/B/Asmdata.pm>.
275
276=head1 AUTHOR
277
278Malcolm Beattie, C<mbeattie@sable.ox.ac.uk>
279
280=cut
a8a597b2 281EOT
282
283__END__
284# First set instruction ord("#") to read comment to end-of-line (sneaky)
285%number 35
fe3a57c4 286comment arg comment_t
a8a597b2 287# Then make ord("\n") into a no-op
288%number 10
289nop none none
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.
292%number 0
293#
92742e37 294#opcode lvalue argtype flags
a8a597b2 295#
92742e37 296ret none none x
e8edd1e6 297ldsv bytecode_sv svindex
92742e37 298ldop PL_op opindex
e8edd1e6 299stsv bytecode_sv U32 s
92742e37 300stop PL_op U32 s
e8edd1e6 301ldspecsv bytecode_sv U8 x
302newsv bytecode_sv U8 x
92742e37 303newop PL_op U8 x
304newopn PL_op U8 x
305newpv none PV
e8edd1e6 306pv_cur bytecode_pv.xpv_cur STRLEN
307pv_free bytecode_pv none x
308sv_upgrade bytecode_sv char x
309sv_refcnt SvREFCNT(bytecode_sv) U32
310sv_refcnt_add SvREFCNT(bytecode_sv) I32 x
311sv_flags SvFLAGS(bytecode_sv) U32
312xrv SvRV(bytecode_sv) svindex
313xpv bytecode_sv none x
314xiv32 SvIVX(bytecode_sv) I32
315xiv64 SvIVX(bytecode_sv) IV64
65202027 316xnv SvNVX(bytecode_sv) NV
e8edd1e6 317xlv_targoff LvTARGOFF(bytecode_sv) STRLEN
318xlv_targlen LvTARGLEN(bytecode_sv) STRLEN
319xlv_targ LvTARG(bytecode_sv) svindex
320xlv_type LvTYPE(bytecode_sv) char
321xbm_useful BmUSEFUL(bytecode_sv) I32
322xbm_previous BmPREVIOUS(bytecode_sv) U16
323xbm_rare BmRARE(bytecode_sv) U8
324xfm_lines FmLINES(bytecode_sv) I32
325xio_lines IoLINES(bytecode_sv) long
326xio_page IoPAGE(bytecode_sv) long
327xio_page_len IoPAGE_LEN(bytecode_sv) long
328xio_lines_left IoLINES_LEFT(bytecode_sv) long
329xio_top_name IoTOP_NAME(bytecode_sv) pvcontents
330xio_top_gv *(SV**)&IoTOP_GV(bytecode_sv) svindex
331xio_fmt_name IoFMT_NAME(bytecode_sv) pvcontents
332xio_fmt_gv *(SV**)&IoFMT_GV(bytecode_sv) svindex
333xio_bottom_name IoBOTTOM_NAME(bytecode_sv) pvcontents
334xio_bottom_gv *(SV**)&IoBOTTOM_GV(bytecode_sv) svindex
335xio_subprocess IoSUBPROCESS(bytecode_sv) short
336xio_type IoTYPE(bytecode_sv) char
337xio_flags IoFLAGS(bytecode_sv) char
338xcv_stash *(SV**)&CvSTASH(bytecode_sv) svindex
339xcv_start CvSTART(bytecode_sv) opindex
340xcv_root CvROOT(bytecode_sv) opindex
341xcv_gv *(SV**)&CvGV(bytecode_sv) svindex
57843af0 342xcv_file CvFILE(bytecode_sv) pvcontents
e8edd1e6 343xcv_depth CvDEPTH(bytecode_sv) long
344xcv_padlist *(SV**)&CvPADLIST(bytecode_sv) svindex
345xcv_outside *(SV**)&CvOUTSIDE(bytecode_sv) svindex
346xcv_flags CvFLAGS(bytecode_sv) U8
347av_extend bytecode_sv SSize_t x
348av_push bytecode_sv svindex x
349xav_fill AvFILLp(bytecode_sv) SSize_t
350xav_max AvMAX(bytecode_sv) SSize_t
351xav_flags AvFLAGS(bytecode_sv) U8
352xhv_riter HvRITER(bytecode_sv) I32
353xhv_name HvNAME(bytecode_sv) pvcontents
354hv_store bytecode_sv svindex x
355sv_magic bytecode_sv char x
356mg_obj SvMAGIC(bytecode_sv)->mg_obj svindex
357mg_private SvMAGIC(bytecode_sv)->mg_private U16
358mg_flags SvMAGIC(bytecode_sv)->mg_flags U8
359mg_pv SvMAGIC(bytecode_sv) pvcontents x
360xmg_stash *(SV**)&SvSTASH(bytecode_sv) svindex
361gv_fetchpv bytecode_sv strconst x
362gv_stashpv bytecode_sv strconst x
363gp_sv GvSV(bytecode_sv) svindex
364gp_refcnt GvREFCNT(bytecode_sv) U32
365gp_refcnt_add GvREFCNT(bytecode_sv) I32 x
366gp_av *(SV**)&GvAV(bytecode_sv) svindex
367gp_hv *(SV**)&GvHV(bytecode_sv) svindex
368gp_cv *(SV**)&GvCV(bytecode_sv) svindex
b195d487 369gp_file GvFILE(bytecode_sv) pvcontents
e8edd1e6 370gp_io *(SV**)&GvIOp(bytecode_sv) svindex
371gp_form *(SV**)&GvFORM(bytecode_sv) svindex
372gp_cvgen GvCVGEN(bytecode_sv) U32
373gp_line GvLINE(bytecode_sv) line_t
374gp_share bytecode_sv svindex x
375xgv_flags GvFLAGS(bytecode_sv) U8
92742e37 376op_next PL_op->op_next opindex
377op_sibling PL_op->op_sibling opindex
378op_ppaddr PL_op->op_ppaddr strconst x
379op_targ PL_op->op_targ PADOFFSET
380op_type PL_op OPCODE x
381op_seq PL_op->op_seq U16
382op_flags PL_op->op_flags U8
383op_private PL_op->op_private U8
384op_first cUNOP->op_first opindex
385op_last cBINOP->op_last opindex
386op_other cLOGOP->op_other opindex
92742e37 387op_children cLISTOP->op_children U32
388op_pmreplroot cPMOP->op_pmreplroot opindex
389op_pmreplrootgv *(SV**)&cPMOP->op_pmreplroot svindex
390op_pmreplstart cPMOP->op_pmreplstart opindex
391op_pmnext *(OP**)&cPMOP->op_pmnext opindex
392pregcomp PL_op pvcontents x
393op_pmflags cPMOP->op_pmflags U16
394op_pmpermflags cPMOP->op_pmpermflags U16
395op_sv cSVOP->op_sv svindex
7934575e 396op_padix cPADOP->op_padix PADOFFSET
92742e37 397op_pv cPVOP->op_pv pvcontents
398op_pv_tr cPVOP->op_pv op_tr_array
399op_redoop cLOOP->op_redoop opindex
400op_nextop cLOOP->op_nextop opindex
401op_lastop cLOOP->op_lastop opindex
402cop_label cCOP->cop_label pvcontents
11faa288 403cop_stashpv cCOP pvcontents x
57843af0 404cop_file cCOP pvcontents x
92742e37 405cop_seq cCOP->cop_seq U32
406cop_arybase cCOP->cop_arybase I32
57843af0 407cop_line cCOP line_t x
b295d113 408cop_warnings cCOP->cop_warnings svindex
92742e37 409main_start PL_main_start opindex
410main_root PL_main_root opindex
411curpad PL_curpad svindex x