1BEGIN { 2 push @INC, './lib'; 3 require 'regen_lib.pl'; 4} 5use strict; 6my %alias_to = ( 7 U32 => [qw(line_t)], 8 PADOFFSET => [qw(STRLEN SSize_t)], 9 U16 => [qw(OPCODE short)], 10 U8 => [qw(char)], 11); 12 13my @optype= qw(OP UNOP BINOP LOGOP LISTOP PMOP SVOP PADOP PVOP LOOP COP); 14 15# Nullsv *must* come first in the following so that the condition 16# ($$sv == 0) can continue to be used to test (sv == Nullsv). 17my @specialsv = qw(Nullsv &PL_sv_undef &PL_sv_yes &PL_sv_no pWARN_ALL pWARN_NONE); 18 19my (%alias_from, $from, $tos); 20while (($from, $tos) = each %alias_to) { 21 map { $alias_from{$_} = $from } @$tos; 22} 23 24my $c_header = <<'EOT'; 25/* -*- buffer-read-only: t -*- 26 * 27 * Copyright (c) 1996-1999 Malcolm Beattie 28 * 29 * You may distribute under the terms of either the GNU General Public 30 * License or the Artistic License, as specified in the README file. 31 * 32 */ 33/* 34 * This file is autogenerated from bytecode.pl. Changes made here will be lost. 35 */ 36EOT 37 38my $perl_header; 39($perl_header = $c_header) =~ s{[/ ]?\*/?}{#}g; 40 41safer_unlink "ext/ByteLoader/byterun.c", "ext/ByteLoader/byterun.h", "ext/B/B/Asmdata.pm"; 42 43# 44# Start with boilerplate for Asmdata.pm 45# 46open(ASMDATA_PM, ">ext/B/B/Asmdata.pm") or die "ext/B/B/Asmdata.pm: $!"; 47binmode ASMDATA_PM; 48print ASMDATA_PM $perl_header, <<'EOT'; 49package B::Asmdata; 50 51our $VERSION = '1.01'; 52 53use Exporter; 54@ISA = qw(Exporter); 55@EXPORT_OK = qw(%insn_data @insn_name @optype @specialsv_name); 56our(%insn_data, @insn_name, @optype, @specialsv_name); 57 58EOT 59print ASMDATA_PM <<"EOT"; 60\@optype = qw(@optype); 61\@specialsv_name = qw(@specialsv); 62 63# XXX insn_data is initialised this way because with a large 64# %insn_data = (foo => [...], bar => [...], ...) initialiser 65# I get a hard-to-track-down stack underflow and segfault. 66EOT 67 68# 69# Boilerplate for byterun.c 70# 71open(BYTERUN_C, ">ext/ByteLoader/byterun.c") or die "ext/ByteLoader/byterun.c: $!"; 72binmode BYTERUN_C; 73print BYTERUN_C $c_header, <<'EOT'; 74 75#define PERL_NO_GET_CONTEXT 76#include "EXTERN.h" 77#include "perl.h" 78#define NO_XSLOCKS 79#include "XSUB.h" 80 81#include "byterun.h" 82#include "bytecode.h" 83 84 85static const 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 95void * 96bset_obj_store(pTHX_ struct byteloader_state *bstate, void *obj, I32 ix) 97{ 98 if (ix > bstate->bs_obj_list_fill) { 99 Renew(bstate->bs_obj_list, ix + 32, void*); 100 bstate->bs_obj_list_fill = ix + 31; 101 } 102 bstate->bs_obj_list[ix] = obj; 103 return obj; 104} 105 106int 107byterun(pTHX_ register struct byteloader_state *bstate) 108{ 109 register int insn; 110 U32 ix; 111 SV *specialsv_list[6]; 112 113 BYTECODE_HEADER_CHECK; /* croak if incorrect platform */ 114 Newx(bstate->bs_obj_list, 32, void*); /* set op objlist */ 115 bstate->bs_obj_list_fill = 31; 116 bstate->bs_obj_list[0] = NULL; /* first is always Null */ 117 bstate->bs_ix = 1; 118 119EOT 120 121for my $i ( 0 .. $#specialsv ) { 122 print BYTERUN_C " specialsv_list[$i] = $specialsv[$i];\n"; 123} 124 125print BYTERUN_C <<'EOT'; 126 127 while ((insn = BGET_FGETC()) != EOF) { 128 switch (insn) { 129EOT 130 131 132my (@insn_name, $insn_num, $insn, $lvalue, $argtype, $flags, $fundtype); 133 134while (<DATA>) { 135 if (/^\s*#/) { 136 print BYTERUN_C if /^\s*#\s*(?:if|endif|el)/; 137 next; 138 } 139 chop; 140 next unless length; 141 if (/^%number\s+(.*)/) { 142 $insn_num = $1; 143 next; 144 } elsif (/%enum\s+(.*?)\s+(.*)/) { 145 create_enum($1, $2); # must come before instructions 146 next; 147 } 148 ($insn, $lvalue, $argtype, $flags) = split; 149 my $rvalcast = ''; 150 if ($argtype =~ m:(.+)/(.+):) { 151 ($rvalcast, $argtype) = ("($1)", $2); 152 } 153 $insn_name[$insn_num] = $insn; 154 $fundtype = $alias_from{$argtype} || $argtype; 155 156 # 157 # Add the case statement and code for the bytecode interpreter in byterun.c 158 # 159 printf BYTERUN_C "\t case INSN_%s:\t\t/* %d */\n\t {\n", 160 uc($insn), $insn_num; 161 my $optarg = $argtype eq "none" ? "" : ", arg"; 162 if ($optarg) { 163 printf BYTERUN_C "\t\t$argtype arg;\n\t\tBGET_%s(arg);\n", $fundtype; 164 } 165 if ($flags =~ /x/) { 166 print BYTERUN_C "\t\tBSET_$insn($lvalue$optarg);\n"; 167 } elsif ($flags =~ /s/) { 168 # Store instructions store to bytecode_obj_list[arg]. "lvalue" field is rvalue. 169 print BYTERUN_C "\t\tBSET_OBJ_STORE($lvalue$optarg);\n"; 170 } 171 elsif ($optarg && $lvalue ne "none") { 172 print BYTERUN_C "\t\t$lvalue = ${rvalcast}arg;\n"; 173 } 174 print BYTERUN_C "\t\tbreak;\n\t }\n"; 175 176 # 177 # Add the initialiser line for %insn_data in Asmdata.pm 178 # 179 print ASMDATA_PM <<"EOT"; 180\$insn_data{$insn} = [$insn_num, \\&PUT_$fundtype, "GET_$fundtype"]; 181EOT 182 183 # Find the next unused instruction number 184 do { $insn_num++ } while $insn_name[$insn_num]; 185} 186 187# 188# Finish off byterun.c 189# 190print BYTERUN_C <<'EOT'; 191 default: 192 Perl_croak(aTHX_ "Illegal bytecode instruction %d\n", insn); 193 /* NOTREACHED */ 194 } 195 } 196 return 0; 197} 198 199/* ex: set ro: */ 200EOT 201 202# 203# Write the instruction and optype enum constants into byterun.h 204# 205open(BYTERUN_H, ">ext/ByteLoader/byterun.h") or die "ext/ByteLoader/byterun.h: $!"; 206binmode BYTERUN_H; 207print BYTERUN_H $c_header, <<'EOT'; 208struct byteloader_fdata { 209 SV *datasv; 210 int next_out; 211 int idx; 212}; 213 214struct byteloader_state { 215 struct byteloader_fdata *bs_fdata; 216 SV *bs_sv; 217 void **bs_obj_list; 218 int bs_obj_list_fill; 219 int bs_ix; 220 XPV bs_pv; 221 int bs_iv_overflows; 222}; 223 224int bl_getc(struct byteloader_fdata *); 225int bl_read(struct byteloader_fdata *, char *, size_t, size_t); 226extern int byterun(pTHX_ struct byteloader_state *); 227 228enum { 229EOT 230 231my $add_enum_value = 0; 232my $max_insn; 233for $i ( 0 .. $#insn_name ) { 234 $insn = uc($insn_name[$i]); 235 if (defined($insn)) { 236 $max_insn = $i; 237 if ($add_enum_value) { 238 print BYTERUN_H " INSN_$insn = $i,\t\t\t/* $i */\n"; 239 $add_enum_value = 0; 240 } else { 241 print BYTERUN_H " INSN_$insn,\t\t\t/* $i */\n"; 242 } 243 } else { 244 $add_enum_value = 1; 245 } 246} 247 248print BYTERUN_H " MAX_INSN = $max_insn\n};\n"; 249 250print BYTERUN_H "\nenum {\n"; 251for ($i = 0; $i < @optype - 1; $i++) { 252 printf BYTERUN_H " OPt_%s,\t\t/* %d */\n", $optype[$i], $i; 253} 254printf BYTERUN_H " OPt_%s\t\t/* %d */\n};\n\n", $optype[$i], $i; 255 256print BYTERUN_H "/* ex: set ro: */\n"; 257 258# 259# Finish off insn_data and create array initialisers in Asmdata.pm 260# 261print ASMDATA_PM <<'EOT'; 262 263my ($insn_name, $insn_data); 264while (($insn_name, $insn_data) = each %insn_data) { 265 $insn_name[$insn_data->[0]] = $insn_name; 266} 267# Fill in any gaps 268@insn_name = map($_ || "unused", @insn_name); 269 2701; 271 272__END__ 273 274=head1 NAME 275 276B::Asmdata - Autogenerated data about Perl ops, used to generate bytecode 277 278=head1 SYNOPSIS 279 280 use B::Asmdata qw(%insn_data @insn_name @optype @specialsv_name); 281 282=head1 DESCRIPTION 283 284Provides information about Perl ops in order to generate bytecode via 285a bunch of exported variables. Its mostly used by B::Assembler and 286B::Disassembler. 287 288=over 4 289 290=item %insn_data 291 292 my($bytecode_num, $put_sub, $get_meth) = @$insn_data{$op_name}; 293 294For a given $op_name (for example, 'cop_label', 'sv_flags', etc...) 295you get an array ref containing the bytecode number of the op, a 296reference to the subroutine used to 'PUT', and the name of the method 297used to 'GET'. 298 299=for _private 300Add more detail about what $put_sub and $get_meth are and how to use them. 301 302=item @insn_name 303 304 my $op_name = $insn_name[$bytecode_num]; 305 306A simple mapping of the bytecode number to the name of the op. 307Suitable for using with %insn_data like so: 308 309 my $op_info = $insn_data{$insn_name[$bytecode_num]}; 310 311=item @optype 312 313 my $op_type = $optype[$op_type_num]; 314 315A simple mapping of the op type number to its type (like 'COP' or 'BINOP'). 316 317=item @specialsv_name 318 319 my $sv_name = $specialsv_name[$sv_index]; 320 321Certain SV types are considered 'special'. They're represented by 322B::SPECIAL and are referred to by a number from the specialsv_list. 323This array maps that number back to the name of the SV (like 'Nullsv' 324or '&PL_sv_undef'). 325 326=back 327 328=head1 AUTHOR 329 330Malcolm Beattie, C<mbeattie@sable.ox.ac.uk> 331 332=cut 333 334# ex: set ro: 335EOT 336 337 338close ASMDATA_PM or die "Error closing ASMDATA_PM: $!"; 339close BYTERUN_H or die "Error closing BYTERUN_H: $!"; 340close BYTERUN_C or die "Error closing BYTERUN_C: $!"; 341 342__END__ 343# First set instruction ord("#") to read comment to end-of-line (sneaky) 344%number 35 345comment arg comment_t 346# Then make ord("\n") into a no-op 347%number 10 348nop none none 349 350# Now for the rest of the ordinary ones, beginning with \0 which is 351# ret so that \0-terminated strings can be read properly as bytecode. 352%number 0 353# 354# The argtype is either a single type or "rightvaluecast/argtype". 355# 356#opcode lvalue argtype flags 357# 358ret none none x 359ldsv bstate->bs_sv svindex 360ldop PL_op opindex 361stsv bstate->bs_sv U32 s 362stop PL_op U32 s 363stpv bstate->bs_pv.xpv_pv U32 x 364ldspecsv bstate->bs_sv U8 x 365ldspecsvx bstate->bs_sv U8 x 366newsv bstate->bs_sv U8 x 367newsvx bstate->bs_sv U32 x 368newop PL_op U8 x 369newopx PL_op U16 x 370newopn PL_op U8 x 371newpv none PV 372pv_cur bstate->bs_pv.xpv_cur STRLEN 373pv_free bstate->bs_pv none x 374sv_upgrade bstate->bs_sv U8 x 375sv_refcnt SvREFCNT(bstate->bs_sv) U32 376sv_refcnt_add SvREFCNT(bstate->bs_sv) I32 x 377sv_flags SvFLAGS(bstate->bs_sv) U32 378xrv bstate->bs_sv svindex x 379xpv bstate->bs_sv none x 380xpv_cur bstate->bs_sv STRLEN x 381xpv_len bstate->bs_sv STRLEN x 382xiv bstate->bs_sv IV x 383xnv bstate->bs_sv NV x 384xlv_targoff LvTARGOFF(bstate->bs_sv) STRLEN 385xlv_targlen LvTARGLEN(bstate->bs_sv) STRLEN 386xlv_targ LvTARG(bstate->bs_sv) svindex 387xlv_type LvTYPE(bstate->bs_sv) char 388xbm_useful BmUSEFUL(bstate->bs_sv) I32 389xbm_previous BmPREVIOUS(bstate->bs_sv) U16 390xbm_rare BmRARE(bstate->bs_sv) U8 391xfm_lines FmLINES(bstate->bs_sv) IV 392xio_lines IoLINES(bstate->bs_sv) IV 393xio_page IoPAGE(bstate->bs_sv) IV 394xio_page_len IoPAGE_LEN(bstate->bs_sv) IV 395xio_lines_left IoLINES_LEFT(bstate->bs_sv) IV 396xio_top_name IoTOP_NAME(bstate->bs_sv) pvindex 397xio_top_gv *(SV**)&IoTOP_GV(bstate->bs_sv) svindex 398xio_fmt_name IoFMT_NAME(bstate->bs_sv) pvindex 399xio_fmt_gv *(SV**)&IoFMT_GV(bstate->bs_sv) svindex 400xio_bottom_name IoBOTTOM_NAME(bstate->bs_sv) pvindex 401xio_bottom_gv *(SV**)&IoBOTTOM_GV(bstate->bs_sv) svindex 402xio_subprocess IoSUBPROCESS(bstate->bs_sv) short 403xio_type IoTYPE(bstate->bs_sv) char 404xio_flags IoFLAGS(bstate->bs_sv) char 405xcv_xsubany *(SV**)&CvXSUBANY(bstate->bs_sv).any_ptr svindex 406xcv_stash *(SV**)&CvSTASH(bstate->bs_sv) svindex 407xcv_start CvSTART(bstate->bs_sv) opindex 408xcv_root CvROOT(bstate->bs_sv) opindex 409xcv_gv *(SV**)&CvGV(bstate->bs_sv) svindex 410xcv_file CvFILE(bstate->bs_sv) pvindex 411xcv_depth CvDEPTH(bstate->bs_sv) long 412xcv_padlist *(SV**)&CvPADLIST(bstate->bs_sv) svindex 413xcv_outside *(SV**)&CvOUTSIDE(bstate->bs_sv) svindex 414xcv_outside_seq CvOUTSIDE_SEQ(bstate->bs_sv) U32 415xcv_flags CvFLAGS(bstate->bs_sv) U16 416av_extend bstate->bs_sv SSize_t x 417av_pushx bstate->bs_sv svindex x 418av_push bstate->bs_sv svindex x 419xav_fill AvFILLp(bstate->bs_sv) SSize_t 420xav_max AvMAX(bstate->bs_sv) SSize_t 421xav_flags AvFLAGS(bstate->bs_sv) U8 422xhv_riter HvRITER(bstate->bs_sv) I32 423xhv_name bstate->bs_sv pvindex x 424xhv_pmroot *(OP**)&HvPMROOT(bstate->bs_sv) opindex 425hv_store bstate->bs_sv svindex x 426sv_magic bstate->bs_sv char x 427mg_obj SvMAGIC(bstate->bs_sv)->mg_obj svindex 428mg_private SvMAGIC(bstate->bs_sv)->mg_private U16 429mg_flags SvMAGIC(bstate->bs_sv)->mg_flags U8 430mg_name SvMAGIC(bstate->bs_sv) pvcontents x 431mg_namex SvMAGIC(bstate->bs_sv) svindex x 432xmg_stash bstate->bs_sv svindex x 433gv_fetchpv bstate->bs_sv strconst x 434gv_fetchpvx bstate->bs_sv strconst x 435gv_stashpv bstate->bs_sv strconst x 436gv_stashpvx bstate->bs_sv strconst x 437gp_sv GvSV(bstate->bs_sv) svindex 438gp_refcnt GvREFCNT(bstate->bs_sv) U32 439gp_refcnt_add GvREFCNT(bstate->bs_sv) I32 x 440gp_av *(SV**)&GvAV(bstate->bs_sv) svindex 441gp_hv *(SV**)&GvHV(bstate->bs_sv) svindex 442gp_cv *(SV**)&GvCV(bstate->bs_sv) svindex 443gp_file GvFILE(bstate->bs_sv) pvindex 444gp_io *(SV**)&GvIOp(bstate->bs_sv) svindex 445gp_form *(SV**)&GvFORM(bstate->bs_sv) svindex 446gp_cvgen GvCVGEN(bstate->bs_sv) U32 447gp_line GvLINE(bstate->bs_sv) line_t 448gp_share bstate->bs_sv svindex x 449xgv_flags GvFLAGS(bstate->bs_sv) U8 450op_next PL_op->op_next opindex 451op_sibling PL_op->op_sibling opindex 452op_ppaddr PL_op->op_ppaddr strconst x 453op_targ PL_op->op_targ PADOFFSET 454op_type PL_op OPCODE x 455op_seq PL_op->op_seq U16 456op_flags PL_op->op_flags U8 457op_private PL_op->op_private U8 458op_first cUNOP->op_first opindex 459op_last cBINOP->op_last opindex 460op_other cLOGOP->op_other opindex 461op_pmreplroot cPMOP->op_pmreplroot opindex 462op_pmreplstart cPMOP->op_pmreplstart opindex 463op_pmnext *(OP**)&cPMOP->op_pmnext opindex 464#ifdef USE_ITHREADS 465op_pmstashpv cPMOP pvindex x 466op_pmreplrootpo cPMOP->op_pmreplroot OP*/PADOFFSET 467#else 468op_pmstash *(SV**)&cPMOP->op_pmstash svindex 469op_pmreplrootgv *(SV**)&cPMOP->op_pmreplroot svindex 470#endif 471pregcomp PL_op pvcontents x 472op_pmflags cPMOP->op_pmflags U16 473op_pmpermflags cPMOP->op_pmpermflags U16 474op_pmdynflags cPMOP->op_pmdynflags U8 475op_sv cSVOP->op_sv svindex 476op_padix cPADOP->op_padix PADOFFSET 477op_pv cPVOP->op_pv pvcontents 478op_pv_tr cPVOP->op_pv op_tr_array 479op_redoop cLOOP->op_redoop opindex 480op_nextop cLOOP->op_nextop opindex 481op_lastop cLOOP->op_lastop opindex 482cop_label cCOP->cop_label pvindex 483#ifdef USE_ITHREADS 484cop_stashpv cCOP pvindex x 485cop_file cCOP pvindex x 486#else 487cop_stash cCOP svindex x 488cop_filegv cCOP svindex x 489#endif 490cop_seq cCOP->cop_seq U32 491cop_arybase cCOP->cop_arybase I32 492cop_line cCOP->cop_line line_t 493cop_io cCOP->cop_io svindex 494cop_warnings cCOP->cop_warnings svindex 495main_start PL_main_start opindex 496main_root PL_main_root opindex 497main_cv *(SV**)&PL_main_cv svindex 498curpad PL_curpad svindex x 499push_begin PL_beginav svindex x 500push_init PL_initav svindex x 501push_end PL_endav svindex x 502curstash *(SV**)&PL_curstash svindex 503defstash *(SV**)&PL_defstash svindex 504data none U8 x 505incav *(SV**)&GvAV(PL_incgv) svindex 506load_glob none svindex x 507#ifdef USE_ITHREADS 508regex_padav *(SV**)&PL_regex_padav svindex 509#endif 510dowarn PL_dowarn U8 511comppad_name *(SV**)&PL_comppad_name svindex 512xgv_stash *(SV**)&GvSTASH(bstate->bs_sv) svindex 513signal bstate->bs_sv strconst x 514# to be removed 515formfeed PL_formfeed svindex 516