| 1 | BEGIN { |
| 2 | push @INC, './lib'; |
| 3 | } |
| 4 | use strict; |
| 5 | my %alias_to = ( |
| 6 | U32 => [qw(PADOFFSET STRLEN)], |
| 7 | I32 => [qw(SSize_t long)], |
| 8 | U16 => [qw(OPCODE line_t short)], |
| 9 | U8 => [qw(char)], |
| 10 | ); |
| 11 | |
| 12 | my @optype= qw(OP UNOP BINOP LOGOP LISTOP PMOP SVOP PADOP PVOP LOOP COP); |
| 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). |
| 16 | my @specialsv = qw(Nullsv &PL_sv_undef &PL_sv_yes &PL_sv_no pWARN_ALL pWARN_NONE); |
| 17 | |
| 18 | my (%alias_from, $from, $tos); |
| 19 | while (($from, $tos) = each %alias_to) { |
| 20 | map { $alias_from{$_} = $from } @$tos; |
| 21 | } |
| 22 | |
| 23 | my $c_header = <<'EOT'; |
| 24 | /* |
| 25 | * Copyright (c) 1996-1999 Malcolm Beattie |
| 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 | */ |
| 34 | EOT |
| 35 | |
| 36 | my $perl_header; |
| 37 | ($perl_header = $c_header) =~ s{[/ ]?\*/?}{#}g; |
| 38 | |
| 39 | unlink "ext/ByteLoader/byterun.c", "ext/ByteLoader/byterun.h", "ext/B/B/Asmdata.pm"; |
| 40 | |
| 41 | # |
| 42 | # Start with boilerplate for Asmdata.pm |
| 43 | # |
| 44 | open(ASMDATA_PM, ">ext/B/B/Asmdata.pm") or die "ext/B/B/Asmdata.pm: $!"; |
| 45 | print ASMDATA_PM $perl_header, <<'EOT'; |
| 46 | package B::Asmdata; |
| 47 | |
| 48 | our $VERSION = '1.00'; |
| 49 | |
| 50 | use Exporter; |
| 51 | @ISA = qw(Exporter); |
| 52 | @EXPORT_OK = qw(%insn_data @insn_name @optype @specialsv_name); |
| 53 | our(%insn_data, @insn_name, @optype, @specialsv_name); |
| 54 | |
| 55 | EOT |
| 56 | print ASMDATA_PM <<"EOT"; |
| 57 | \@optype = qw(@optype); |
| 58 | \@specialsv_name = qw(@specialsv); |
| 59 | |
| 60 | # XXX insn_data is initialised this way because with a large |
| 61 | # %insn_data = (foo => [...], bar => [...], ...) initialiser |
| 62 | # I get a hard-to-track-down stack underflow and segfault. |
| 63 | EOT |
| 64 | |
| 65 | # |
| 66 | # Boilerplate for byterun.c |
| 67 | # |
| 68 | open(BYTERUN_C, ">ext/ByteLoader/byterun.c") or die "ext/ByteLoader/byterun.c: $!"; |
| 69 | print BYTERUN_C $c_header, <<'EOT'; |
| 70 | |
| 71 | #define PERL_NO_GET_CONTEXT |
| 72 | #include "EXTERN.h" |
| 73 | #include "perl.h" |
| 74 | #define NO_XSLOCKS |
| 75 | #include "XSUB.h" |
| 76 | |
| 77 | #include "byterun.h" |
| 78 | #include "bytecode.h" |
| 79 | |
| 80 | |
| 81 | static const int optype_size[] = { |
| 82 | EOT |
| 83 | my $i = 0; |
| 84 | for ($i = 0; $i < @optype - 1; $i++) { |
| 85 | printf BYTERUN_C " sizeof(%s),\n", $optype[$i], $i; |
| 86 | } |
| 87 | printf BYTERUN_C " sizeof(%s)\n", $optype[$i], $i; |
| 88 | print BYTERUN_C <<'EOT'; |
| 89 | }; |
| 90 | |
| 91 | void * |
| 92 | bset_obj_store(pTHX_ struct byteloader_state *bstate, void *obj, I32 ix) |
| 93 | { |
| 94 | if (ix > bstate->bs_obj_list_fill) { |
| 95 | Renew(bstate->bs_obj_list, ix + 32, void*); |
| 96 | bstate->bs_obj_list_fill = ix + 31; |
| 97 | } |
| 98 | bstate->bs_obj_list[ix] = obj; |
| 99 | return obj; |
| 100 | } |
| 101 | |
| 102 | void |
| 103 | byterun(pTHX_ register struct byteloader_state *bstate) |
| 104 | { |
| 105 | register int insn; |
| 106 | U32 ix; |
| 107 | SV *specialsv_list[6]; |
| 108 | |
| 109 | BYTECODE_HEADER_CHECK; /* croak if incorrect platform */ |
| 110 | New(666, bstate->bs_obj_list, 32, void*); /* set op objlist */ |
| 111 | bstate->bs_obj_list_fill = 31; |
| 112 | |
| 113 | EOT |
| 114 | |
| 115 | for my $i ( 0 .. $#specialsv ) { |
| 116 | print BYTERUN_C " specialsv_list[$i] = $specialsv[$i];\n"; |
| 117 | } |
| 118 | |
| 119 | print BYTERUN_C <<'EOT'; |
| 120 | |
| 121 | while ((insn = BGET_FGETC()) != EOF) { |
| 122 | switch (insn) { |
| 123 | EOT |
| 124 | |
| 125 | |
| 126 | my (@insn_name, $insn_num, $insn, $lvalue, $argtype, $flags, $fundtype); |
| 127 | |
| 128 | while (<DATA>) { |
| 129 | chop; |
| 130 | s/#.*//; # remove comments |
| 131 | next unless length; |
| 132 | if (/^%number\s+(.*)/) { |
| 133 | $insn_num = $1; |
| 134 | next; |
| 135 | } elsif (/%enum\s+(.*?)\s+(.*)/) { |
| 136 | create_enum($1, $2); # must come before instructions |
| 137 | next; |
| 138 | } |
| 139 | ($insn, $lvalue, $argtype, $flags) = split; |
| 140 | $insn_name[$insn_num] = $insn; |
| 141 | $fundtype = $alias_from{$argtype} || $argtype; |
| 142 | |
| 143 | # |
| 144 | # Add the case statement and code for the bytecode interpreter in byterun.c |
| 145 | # |
| 146 | printf BYTERUN_C "\t case INSN_%s:\t\t/* %d */\n\t {\n", |
| 147 | uc($insn), $insn_num; |
| 148 | my $optarg = $argtype eq "none" ? "" : ", arg"; |
| 149 | if ($optarg) { |
| 150 | printf BYTERUN_C "\t\t$argtype arg;\n\t\tBGET_%s(arg);\n", $fundtype; |
| 151 | } |
| 152 | if ($flags =~ /x/) { |
| 153 | print BYTERUN_C "\t\tBSET_$insn($lvalue$optarg);\n"; |
| 154 | } elsif ($flags =~ /s/) { |
| 155 | # Store instructions store to bytecode_obj_list[arg]. "lvalue" field is rvalue. |
| 156 | print BYTERUN_C "\t\tBSET_OBJ_STORE($lvalue$optarg);\n"; |
| 157 | } |
| 158 | elsif ($optarg && $lvalue ne "none") { |
| 159 | print BYTERUN_C "\t\t$lvalue = arg;\n"; |
| 160 | } |
| 161 | print BYTERUN_C "\t\tbreak;\n\t }\n"; |
| 162 | |
| 163 | # |
| 164 | # Add the initialiser line for %insn_data in Asmdata.pm |
| 165 | # |
| 166 | print ASMDATA_PM <<"EOT"; |
| 167 | \$insn_data{$insn} = [$insn_num, \\&PUT_$fundtype, "GET_$fundtype"]; |
| 168 | EOT |
| 169 | |
| 170 | # Find the next unused instruction number |
| 171 | do { $insn_num++ } while $insn_name[$insn_num]; |
| 172 | } |
| 173 | |
| 174 | # |
| 175 | # Finish off byterun.c |
| 176 | # |
| 177 | print BYTERUN_C <<'EOT'; |
| 178 | default: |
| 179 | Perl_croak(aTHX_ "Illegal bytecode instruction %d\n", insn); |
| 180 | /* NOTREACHED */ |
| 181 | } |
| 182 | } |
| 183 | } |
| 184 | EOT |
| 185 | |
| 186 | # |
| 187 | # Write the instruction and optype enum constants into byterun.h |
| 188 | # |
| 189 | open(BYTERUN_H, ">ext/ByteLoader/byterun.h") or die "ext/ByteLoader/byterun.h: $!"; |
| 190 | print BYTERUN_H $c_header, <<'EOT'; |
| 191 | struct byteloader_fdata { |
| 192 | SV *datasv; |
| 193 | int next_out; |
| 194 | int idx; |
| 195 | }; |
| 196 | |
| 197 | struct byteloader_state { |
| 198 | struct byteloader_fdata *bs_fdata; |
| 199 | SV *bs_sv; |
| 200 | void **bs_obj_list; |
| 201 | int bs_obj_list_fill; |
| 202 | XPV bs_pv; |
| 203 | int bs_iv_overflows; |
| 204 | }; |
| 205 | |
| 206 | int bl_getc(struct byteloader_fdata *); |
| 207 | int bl_read(struct byteloader_fdata *, char *, size_t, size_t); |
| 208 | extern void byterun(pTHX_ struct byteloader_state *); |
| 209 | |
| 210 | enum { |
| 211 | EOT |
| 212 | |
| 213 | my $add_enum_value = 0; |
| 214 | my $max_insn; |
| 215 | for $i ( 0 .. $#insn_name ) { |
| 216 | $insn = uc($insn_name[$i]); |
| 217 | if (defined($insn)) { |
| 218 | $max_insn = $i; |
| 219 | if ($add_enum_value) { |
| 220 | print BYTERUN_H " INSN_$insn = $i,\t\t\t/* $i */\n"; |
| 221 | $add_enum_value = 0; |
| 222 | } else { |
| 223 | print BYTERUN_H " INSN_$insn,\t\t\t/* $i */\n"; |
| 224 | } |
| 225 | } else { |
| 226 | $add_enum_value = 1; |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | print BYTERUN_H " MAX_INSN = $max_insn\n};\n"; |
| 231 | |
| 232 | print BYTERUN_H "\nenum {\n"; |
| 233 | for ($i = 0; $i < @optype - 1; $i++) { |
| 234 | printf BYTERUN_H " OPt_%s,\t\t/* %d */\n", $optype[$i], $i; |
| 235 | } |
| 236 | printf BYTERUN_H " OPt_%s\t\t/* %d */\n};\n\n", $optype[$i], $i; |
| 237 | |
| 238 | # |
| 239 | # Finish off insn_data and create array initialisers in Asmdata.pm |
| 240 | # |
| 241 | print ASMDATA_PM <<'EOT'; |
| 242 | |
| 243 | my ($insn_name, $insn_data); |
| 244 | while (($insn_name, $insn_data) = each %insn_data) { |
| 245 | $insn_name[$insn_data->[0]] = $insn_name; |
| 246 | } |
| 247 | # Fill in any gaps |
| 248 | @insn_name = map($_ || "unused", @insn_name); |
| 249 | |
| 250 | 1; |
| 251 | |
| 252 | __END__ |
| 253 | |
| 254 | =head1 NAME |
| 255 | |
| 256 | B::Asmdata - Autogenerated data about Perl ops, used to generate bytecode |
| 257 | |
| 258 | =head1 SYNOPSIS |
| 259 | |
| 260 | use Asmdata; |
| 261 | |
| 262 | =head1 DESCRIPTION |
| 263 | |
| 264 | See F<ext/B/B/Asmdata.pm>. |
| 265 | |
| 266 | =head1 AUTHOR |
| 267 | |
| 268 | Malcolm Beattie, C<mbeattie@sable.ox.ac.uk> |
| 269 | |
| 270 | =cut |
| 271 | EOT |
| 272 | |
| 273 | __END__ |
| 274 | # First set instruction ord("#") to read comment to end-of-line (sneaky) |
| 275 | %number 35 |
| 276 | comment arg comment_t |
| 277 | # Then make ord("\n") into a no-op |
| 278 | %number 10 |
| 279 | nop none none |
| 280 | # Now for the rest of the ordinary ones, beginning with \0 which is |
| 281 | # ret so that \0-terminated strings can be read properly as bytecode. |
| 282 | %number 0 |
| 283 | # |
| 284 | #opcode lvalue argtype flags |
| 285 | # |
| 286 | ret none none x |
| 287 | ldsv bstate->bs_sv svindex |
| 288 | ldop PL_op opindex |
| 289 | stsv bstate->bs_sv U32 s |
| 290 | stop PL_op U32 s |
| 291 | stpv bstate->bs_pv.xpv_pv U32 x |
| 292 | ldspecsv bstate->bs_sv U8 x |
| 293 | newsv bstate->bs_sv U8 x |
| 294 | newop PL_op U8 x |
| 295 | newopn PL_op U8 x |
| 296 | newpv none PV |
| 297 | pv_cur bstate->bs_pv.xpv_cur STRLEN |
| 298 | pv_free bstate->bs_pv none x |
| 299 | sv_upgrade bstate->bs_sv char x |
| 300 | sv_refcnt SvREFCNT(bstate->bs_sv) U32 |
| 301 | sv_refcnt_add SvREFCNT(bstate->bs_sv) I32 x |
| 302 | sv_flags SvFLAGS(bstate->bs_sv) U32 |
| 303 | xrv SvRV(bstate->bs_sv) svindex |
| 304 | xpv bstate->bs_sv none x |
| 305 | xiv32 SvIVX(bstate->bs_sv) I32 |
| 306 | xiv64 SvIVX(bstate->bs_sv) IV64 |
| 307 | xnv SvNVX(bstate->bs_sv) NV |
| 308 | xlv_targoff LvTARGOFF(bstate->bs_sv) STRLEN |
| 309 | xlv_targlen LvTARGLEN(bstate->bs_sv) STRLEN |
| 310 | xlv_targ LvTARG(bstate->bs_sv) svindex |
| 311 | xlv_type LvTYPE(bstate->bs_sv) char |
| 312 | xbm_useful BmUSEFUL(bstate->bs_sv) I32 |
| 313 | xbm_previous BmPREVIOUS(bstate->bs_sv) U16 |
| 314 | xbm_rare BmRARE(bstate->bs_sv) U8 |
| 315 | xfm_lines FmLINES(bstate->bs_sv) I32 |
| 316 | xio_lines IoLINES(bstate->bs_sv) long |
| 317 | xio_page IoPAGE(bstate->bs_sv) long |
| 318 | xio_page_len IoPAGE_LEN(bstate->bs_sv) long |
| 319 | xio_lines_left IoLINES_LEFT(bstate->bs_sv) long |
| 320 | xio_top_name IoTOP_NAME(bstate->bs_sv) pvcontents |
| 321 | xio_top_gv *(SV**)&IoTOP_GV(bstate->bs_sv) svindex |
| 322 | xio_fmt_name IoFMT_NAME(bstate->bs_sv) pvcontents |
| 323 | xio_fmt_gv *(SV**)&IoFMT_GV(bstate->bs_sv) svindex |
| 324 | xio_bottom_name IoBOTTOM_NAME(bstate->bs_sv) pvcontents |
| 325 | xio_bottom_gv *(SV**)&IoBOTTOM_GV(bstate->bs_sv) svindex |
| 326 | xio_subprocess IoSUBPROCESS(bstate->bs_sv) short |
| 327 | xio_type IoTYPE(bstate->bs_sv) char |
| 328 | xio_flags IoFLAGS(bstate->bs_sv) char |
| 329 | xcv_stash *(SV**)&CvSTASH(bstate->bs_sv) svindex |
| 330 | xcv_start CvSTART(bstate->bs_sv) opindex |
| 331 | xcv_root CvROOT(bstate->bs_sv) opindex |
| 332 | xcv_gv *(SV**)&CvGV(bstate->bs_sv) svindex |
| 333 | xcv_file CvFILE(bstate->bs_sv) pvindex |
| 334 | xcv_depth CvDEPTH(bstate->bs_sv) long |
| 335 | xcv_padlist *(SV**)&CvPADLIST(bstate->bs_sv) svindex |
| 336 | xcv_outside *(SV**)&CvOUTSIDE(bstate->bs_sv) svindex |
| 337 | xcv_flags CvFLAGS(bstate->bs_sv) U16 |
| 338 | av_extend bstate->bs_sv SSize_t x |
| 339 | av_push bstate->bs_sv svindex x |
| 340 | xav_fill AvFILLp(bstate->bs_sv) SSize_t |
| 341 | xav_max AvMAX(bstate->bs_sv) SSize_t |
| 342 | xav_flags AvFLAGS(bstate->bs_sv) U8 |
| 343 | xhv_riter HvRITER(bstate->bs_sv) I32 |
| 344 | xhv_name HvNAME(bstate->bs_sv) pvcontents |
| 345 | hv_store bstate->bs_sv svindex x |
| 346 | sv_magic bstate->bs_sv char x |
| 347 | mg_obj SvMAGIC(bstate->bs_sv)->mg_obj svindex |
| 348 | mg_private SvMAGIC(bstate->bs_sv)->mg_private U16 |
| 349 | mg_flags SvMAGIC(bstate->bs_sv)->mg_flags U8 |
| 350 | mg_pv SvMAGIC(bstate->bs_sv) pvcontents x |
| 351 | xmg_stash *(SV**)&SvSTASH(bstate->bs_sv) svindex |
| 352 | gv_fetchpv bstate->bs_sv strconst x |
| 353 | gv_stashpv bstate->bs_sv strconst x |
| 354 | gp_sv GvSV(bstate->bs_sv) svindex |
| 355 | gp_refcnt GvREFCNT(bstate->bs_sv) U32 |
| 356 | gp_refcnt_add GvREFCNT(bstate->bs_sv) I32 x |
| 357 | gp_av *(SV**)&GvAV(bstate->bs_sv) svindex |
| 358 | gp_hv *(SV**)&GvHV(bstate->bs_sv) svindex |
| 359 | gp_cv *(SV**)&GvCV(bstate->bs_sv) svindex |
| 360 | gp_file GvFILE(bstate->bs_sv) pvindex |
| 361 | gp_io *(SV**)&GvIOp(bstate->bs_sv) svindex |
| 362 | gp_form *(SV**)&GvFORM(bstate->bs_sv) svindex |
| 363 | gp_cvgen GvCVGEN(bstate->bs_sv) U32 |
| 364 | gp_line GvLINE(bstate->bs_sv) line_t |
| 365 | gp_share bstate->bs_sv svindex x |
| 366 | xgv_flags GvFLAGS(bstate->bs_sv) U8 |
| 367 | op_next PL_op->op_next opindex |
| 368 | op_sibling PL_op->op_sibling opindex |
| 369 | op_ppaddr PL_op->op_ppaddr strconst x |
| 370 | op_targ PL_op->op_targ PADOFFSET |
| 371 | op_type PL_op OPCODE x |
| 372 | op_seq PL_op->op_seq U16 |
| 373 | op_flags PL_op->op_flags U8 |
| 374 | op_private PL_op->op_private U8 |
| 375 | op_first cUNOP->op_first opindex |
| 376 | op_last cBINOP->op_last opindex |
| 377 | op_other cLOGOP->op_other opindex |
| 378 | op_pmreplroot cPMOP->op_pmreplroot opindex |
| 379 | op_pmreplrootgv *(SV**)&cPMOP->op_pmreplroot svindex |
| 380 | op_pmreplstart cPMOP->op_pmreplstart opindex |
| 381 | op_pmnext *(OP**)&cPMOP->op_pmnext opindex |
| 382 | pregcomp PL_op pvcontents x |
| 383 | op_pmflags cPMOP->op_pmflags U16 |
| 384 | op_pmpermflags cPMOP->op_pmpermflags U16 |
| 385 | op_sv cSVOP->op_sv svindex |
| 386 | op_padix cPADOP->op_padix PADOFFSET |
| 387 | op_pv cPVOP->op_pv pvcontents |
| 388 | op_pv_tr cPVOP->op_pv op_tr_array |
| 389 | op_redoop cLOOP->op_redoop opindex |
| 390 | op_nextop cLOOP->op_nextop opindex |
| 391 | op_lastop cLOOP->op_lastop opindex |
| 392 | cop_label cCOP->cop_label pvindex |
| 393 | cop_stashpv cCOP pvindex x |
| 394 | cop_file cCOP pvindex x |
| 395 | cop_seq cCOP->cop_seq U32 |
| 396 | cop_arybase cCOP->cop_arybase I32 |
| 397 | cop_line cCOP line_t x |
| 398 | cop_warnings cCOP->cop_warnings svindex |
| 399 | main_start PL_main_start opindex |
| 400 | main_root PL_main_root opindex |
| 401 | curpad PL_curpad svindex x |
| 402 | push_begin PL_beginav svindex x |
| 403 | push_init PL_initav svindex x |
| 404 | push_end PL_endav svindex x |