| 1 | BEGIN { |
| 2 | push @INC, './lib'; |
| 3 | require 'regen_lib.pl'; |
| 4 | } |
| 5 | use strict; |
| 6 | my %alias_to = ( |
| 7 | U32 => [qw(line_t)], |
| 8 | PADOFFSET => [qw(STRLEN SSize_t)], |
| 9 | U16 => [qw(OPCODE short)], |
| 10 | U8 => [qw(char)], |
| 11 | ); |
| 12 | |
| 13 | my @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). |
| 17 | my @specialsv = qw(Nullsv &PL_sv_undef &PL_sv_yes &PL_sv_no |
| 18 | (SV*)pWARN_ALL (SV*)pWARN_NONE (SV*)pWARN_STD); |
| 19 | |
| 20 | my (%alias_from, $from, $tos); |
| 21 | while (($from, $tos) = each %alias_to) { |
| 22 | map { $alias_from{$_} = $from } @$tos; |
| 23 | } |
| 24 | |
| 25 | my $c_header = <<'EOT'; |
| 26 | /* -*- buffer-read-only: t -*- |
| 27 | * |
| 28 | * Copyright (c) 1996-1999 Malcolm Beattie |
| 29 | * |
| 30 | * You may distribute under the terms of either the GNU General Public |
| 31 | * License or the Artistic License, as specified in the README file. |
| 32 | * |
| 33 | */ |
| 34 | /* |
| 35 | * This file is autogenerated from bytecode.pl. Changes made here will be lost. |
| 36 | */ |
| 37 | EOT |
| 38 | |
| 39 | my $perl_header; |
| 40 | ($perl_header = $c_header) =~ s{[/ ]?\*/?}{#}g; |
| 41 | |
| 42 | safer_unlink "ext/B/B/Asmdata.pm"; |
| 43 | |
| 44 | # |
| 45 | # Start with boilerplate for Asmdata.pm |
| 46 | # |
| 47 | open(ASMDATA_PM, ">ext/B/B/Asmdata.pm") or die "ext/B/B/Asmdata.pm: $!"; |
| 48 | binmode ASMDATA_PM; |
| 49 | print ASMDATA_PM $perl_header, <<'EOT'; |
| 50 | package B::Asmdata; |
| 51 | |
| 52 | our $VERSION = '1.01'; |
| 53 | |
| 54 | use Exporter; |
| 55 | @ISA = qw(Exporter); |
| 56 | @EXPORT_OK = qw(%insn_data @insn_name @optype @specialsv_name); |
| 57 | our(%insn_data, @insn_name, @optype, @specialsv_name); |
| 58 | |
| 59 | EOT |
| 60 | print ASMDATA_PM <<"EOT"; |
| 61 | \@optype = qw(@optype); |
| 62 | \@specialsv_name = qw(@specialsv); |
| 63 | |
| 64 | # XXX insn_data is initialised this way because with a large |
| 65 | # %insn_data = (foo => [...], bar => [...], ...) initialiser |
| 66 | # I get a hard-to-track-down stack underflow and segfault. |
| 67 | EOT |
| 68 | |
| 69 | my $size = @specialsv; |
| 70 | |
| 71 | my (@insn_name, $insn_num, $insn, $lvalue, $argtype, $flags, $fundtype); |
| 72 | |
| 73 | while (<DATA>) { |
| 74 | if (/^\s*#/) { |
| 75 | next; |
| 76 | } |
| 77 | chop; |
| 78 | next unless length; |
| 79 | if (/^%number\s+(.*)/) { |
| 80 | $insn_num = $1; |
| 81 | next; |
| 82 | } elsif (/%enum\s+(.*?)\s+(.*)/) { |
| 83 | create_enum($1, $2); # must come before instructions |
| 84 | next; |
| 85 | } |
| 86 | ($insn, $lvalue, $argtype, $flags) = split; |
| 87 | my $rvalcast = ''; |
| 88 | if ($argtype =~ m:(.+)/(.+):) { |
| 89 | ($rvalcast, $argtype) = ("($1)", $2); |
| 90 | } |
| 91 | $insn_name[$insn_num] = $insn; |
| 92 | $fundtype = $alias_from{$argtype} || $argtype; |
| 93 | |
| 94 | # |
| 95 | # Add the initialiser line for %insn_data in Asmdata.pm |
| 96 | # |
| 97 | print ASMDATA_PM <<"EOT"; |
| 98 | \$insn_data{$insn} = [$insn_num, \\&PUT_$fundtype, "GET_$fundtype"]; |
| 99 | EOT |
| 100 | |
| 101 | # Find the next unused instruction number |
| 102 | do { $insn_num++ } while $insn_name[$insn_num]; |
| 103 | } |
| 104 | |
| 105 | # |
| 106 | # Finish off insn_data and create array initialisers in Asmdata.pm |
| 107 | # |
| 108 | print ASMDATA_PM <<'EOT'; |
| 109 | |
| 110 | my ($insn_name, $insn_data); |
| 111 | while (($insn_name, $insn_data) = each %insn_data) { |
| 112 | $insn_name[$insn_data->[0]] = $insn_name; |
| 113 | } |
| 114 | # Fill in any gaps |
| 115 | @insn_name = map($_ || "unused", @insn_name); |
| 116 | |
| 117 | 1; |
| 118 | |
| 119 | __END__ |
| 120 | |
| 121 | =head1 NAME |
| 122 | |
| 123 | B::Asmdata - Autogenerated data about Perl ops |
| 124 | |
| 125 | =head1 SYNOPSIS |
| 126 | |
| 127 | use B::Asmdata qw(%insn_data @insn_name @optype @specialsv_name); |
| 128 | |
| 129 | =head1 DESCRIPTION |
| 130 | |
| 131 | Provides information about Perl ops in order to generate bytecode via |
| 132 | a bunch of exported variables. Its mostly used by B::Assembler and |
| 133 | B::Disassembler. |
| 134 | |
| 135 | =over 4 |
| 136 | |
| 137 | =item %insn_data |
| 138 | |
| 139 | my($bytecode_num, $put_sub, $get_meth) = @$insn_data{$op_name}; |
| 140 | |
| 141 | For a given $op_name (for example, 'cop_label', 'sv_flags', etc...) |
| 142 | you get an array ref containing the bytecode number of the op, a |
| 143 | reference to the subroutine used to 'PUT', and the name of the method |
| 144 | used to 'GET'. |
| 145 | |
| 146 | =for _private |
| 147 | Add more detail about what $put_sub and $get_meth are and how to use them. |
| 148 | |
| 149 | =item @insn_name |
| 150 | |
| 151 | my $op_name = $insn_name[$bytecode_num]; |
| 152 | |
| 153 | A simple mapping of the bytecode number to the name of the op. |
| 154 | Suitable for using with %insn_data like so: |
| 155 | |
| 156 | my $op_info = $insn_data{$insn_name[$bytecode_num]}; |
| 157 | |
| 158 | =item @optype |
| 159 | |
| 160 | my $op_type = $optype[$op_type_num]; |
| 161 | |
| 162 | A simple mapping of the op type number to its type (like 'COP' or 'BINOP'). |
| 163 | |
| 164 | =item @specialsv_name |
| 165 | |
| 166 | my $sv_name = $specialsv_name[$sv_index]; |
| 167 | |
| 168 | Certain SV types are considered 'special'. They're represented by |
| 169 | B::SPECIAL and are referred to by a number from the specialsv_list. |
| 170 | This array maps that number back to the name of the SV (like 'Nullsv' |
| 171 | or '&PL_sv_undef'). |
| 172 | |
| 173 | =back |
| 174 | |
| 175 | =head1 AUTHOR |
| 176 | |
| 177 | Malcolm Beattie, C<mbeattie@sable.ox.ac.uk> |
| 178 | |
| 179 | =cut |
| 180 | |
| 181 | # ex: set ro: |
| 182 | EOT |
| 183 | |
| 184 | |
| 185 | close ASMDATA_PM or die "Error closing ASMDATA_PM: $!"; |
| 186 | |
| 187 | __END__ |
| 188 | # First set instruction ord("#") to read comment to end-of-line (sneaky) |
| 189 | %number 35 |
| 190 | comment arg comment_t |
| 191 | # Then make ord("\n") into a no-op |
| 192 | %number 10 |
| 193 | nop none none |
| 194 | |
| 195 | # Now for the rest of the ordinary ones, beginning with \0 which is |
| 196 | # ret so that \0-terminated strings can be read properly as bytecode. |
| 197 | %number 0 |
| 198 | # |
| 199 | # The argtype is either a single type or "rightvaluecast/argtype". |
| 200 | # |
| 201 | #opcode lvalue argtype flags |
| 202 | # |
| 203 | ret none none x |
| 204 | ldsv bstate->bs_sv svindex |
| 205 | ldop PL_op opindex |
| 206 | stsv bstate->bs_sv U32 s |
| 207 | stop PL_op U32 s |
| 208 | stpv bstate->bs_pv.pvx U32 x |
| 209 | ldspecsv bstate->bs_sv U8 x |
| 210 | ldspecsvx bstate->bs_sv U8 x |
| 211 | newsv bstate->bs_sv svtype x |
| 212 | newsvx bstate->bs_sv svtype x |
| 213 | newop PL_op U8 x |
| 214 | newopx PL_op U16 x |
| 215 | newopn PL_op U8 x |
| 216 | newpv none PV |
| 217 | pv_cur bstate->bs_pv.xpv.xpv_cur STRLEN |
| 218 | pv_free bstate->bs_pv.pvx none x |
| 219 | sv_upgrade bstate->bs_sv svtype x |
| 220 | sv_refcnt SvREFCNT(bstate->bs_sv) U32 |
| 221 | sv_refcnt_add SvREFCNT(bstate->bs_sv) I32 x |
| 222 | sv_flags SvFLAGS(bstate->bs_sv) U32 |
| 223 | xrv bstate->bs_sv svindex x |
| 224 | xpv bstate->bs_sv none x |
| 225 | xpv_cur bstate->bs_sv STRLEN x |
| 226 | xpv_len bstate->bs_sv STRLEN x |
| 227 | xiv bstate->bs_sv IV x |
| 228 | xnv bstate->bs_sv NV x |
| 229 | xlv_targoff LvTARGOFF(bstate->bs_sv) STRLEN |
| 230 | xlv_targlen LvTARGLEN(bstate->bs_sv) STRLEN |
| 231 | xlv_targ LvTARG(bstate->bs_sv) svindex |
| 232 | xlv_type LvTYPE(bstate->bs_sv) char |
| 233 | xbm_useful BmUSEFUL(bstate->bs_sv) I32 |
| 234 | xbm_previous BmPREVIOUS(bstate->bs_sv) U16 |
| 235 | xbm_rare BmRARE(bstate->bs_sv) U8 |
| 236 | xfm_lines FmLINES(bstate->bs_sv) IV |
| 237 | xio_lines IoLINES(bstate->bs_sv) IV |
| 238 | xio_page IoPAGE(bstate->bs_sv) IV |
| 239 | xio_page_len IoPAGE_LEN(bstate->bs_sv) IV |
| 240 | xio_lines_left IoLINES_LEFT(bstate->bs_sv) IV |
| 241 | xio_top_name IoTOP_NAME(bstate->bs_sv) pvindex |
| 242 | xio_top_gv *(SV**)&IoTOP_GV(bstate->bs_sv) svindex |
| 243 | xio_fmt_name IoFMT_NAME(bstate->bs_sv) pvindex |
| 244 | xio_fmt_gv *(SV**)&IoFMT_GV(bstate->bs_sv) svindex |
| 245 | xio_bottom_name IoBOTTOM_NAME(bstate->bs_sv) pvindex |
| 246 | xio_bottom_gv *(SV**)&IoBOTTOM_GV(bstate->bs_sv) svindex |
| 247 | xio_subprocess IoSUBPROCESS(bstate->bs_sv) short |
| 248 | xio_type IoTYPE(bstate->bs_sv) char |
| 249 | xio_flags IoFLAGS(bstate->bs_sv) char |
| 250 | xcv_xsubany *(SV**)&CvXSUBANY(bstate->bs_sv).any_ptr svindex |
| 251 | xcv_stash *(SV**)&CvSTASH(bstate->bs_sv) svindex |
| 252 | xcv_start CvSTART(bstate->bs_sv) opindex |
| 253 | xcv_root CvROOT(bstate->bs_sv) opindex |
| 254 | xcv_gv *(SV**)&CvGV(bstate->bs_sv) svindex |
| 255 | xcv_file CvFILE(bstate->bs_sv) pvindex |
| 256 | xcv_depth CvDEPTH(bstate->bs_sv) long |
| 257 | xcv_padlist *(SV**)&CvPADLIST(bstate->bs_sv) svindex |
| 258 | xcv_outside *(SV**)&CvOUTSIDE(bstate->bs_sv) svindex |
| 259 | xcv_outside_seq CvOUTSIDE_SEQ(bstate->bs_sv) U32 |
| 260 | xcv_flags CvFLAGS(bstate->bs_sv) U16 |
| 261 | av_extend bstate->bs_sv SSize_t x |
| 262 | av_pushx bstate->bs_sv svindex x |
| 263 | av_push bstate->bs_sv svindex x |
| 264 | xav_fill AvFILLp(bstate->bs_sv) SSize_t |
| 265 | xav_max AvMAX(bstate->bs_sv) SSize_t |
| 266 | xhv_riter HvRITER(bstate->bs_sv) I32 |
| 267 | xhv_name bstate->bs_sv pvindex x |
| 268 | hv_store bstate->bs_sv svindex x |
| 269 | sv_magic bstate->bs_sv char x |
| 270 | mg_obj SvMAGIC(bstate->bs_sv)->mg_obj svindex |
| 271 | mg_private SvMAGIC(bstate->bs_sv)->mg_private U16 |
| 272 | mg_flags SvMAGIC(bstate->bs_sv)->mg_flags U8 |
| 273 | mg_name SvMAGIC(bstate->bs_sv) pvcontents x |
| 274 | mg_namex SvMAGIC(bstate->bs_sv) svindex x |
| 275 | xmg_stash bstate->bs_sv svindex x |
| 276 | gv_fetchpv bstate->bs_sv strconst x |
| 277 | gv_fetchpvx bstate->bs_sv strconst x |
| 278 | gv_stashpv bstate->bs_sv strconst x |
| 279 | gv_stashpvx bstate->bs_sv strconst x |
| 280 | gp_sv GvSV(bstate->bs_sv) svindex |
| 281 | gp_refcnt GvREFCNT(bstate->bs_sv) U32 |
| 282 | gp_refcnt_add GvREFCNT(bstate->bs_sv) I32 x |
| 283 | gp_av *(SV**)&GvAV(bstate->bs_sv) svindex |
| 284 | gp_hv *(SV**)&GvHV(bstate->bs_sv) svindex |
| 285 | gp_cv *(SV**)&GvCV(bstate->bs_sv) svindex |
| 286 | gp_file bstate->bs_sv pvindex x |
| 287 | gp_io *(SV**)&GvIOp(bstate->bs_sv) svindex |
| 288 | gp_form *(SV**)&GvFORM(bstate->bs_sv) svindex |
| 289 | gp_cvgen GvCVGEN(bstate->bs_sv) U32 |
| 290 | gp_line GvLINE(bstate->bs_sv) line_t |
| 291 | gp_share bstate->bs_sv svindex x |
| 292 | xgv_flags GvFLAGS(bstate->bs_sv) U8 |
| 293 | op_next PL_op->op_next opindex |
| 294 | op_sibling PL_op->op_sibling opindex |
| 295 | op_ppaddr PL_op->op_ppaddr strconst x |
| 296 | op_targ PL_op->op_targ PADOFFSET |
| 297 | op_type PL_op OPCODE x |
| 298 | op_opt PL_op->op_opt U8 |
| 299 | op_static PL_op->op_static U8 |
| 300 | op_flags PL_op->op_flags U8 |
| 301 | op_private PL_op->op_private U8 |
| 302 | op_first cUNOP->op_first opindex |
| 303 | op_last cBINOP->op_last opindex |
| 304 | op_other cLOGOP->op_other opindex |
| 305 | op_pmreplroot cPMOP->op_pmreplroot opindex |
| 306 | op_pmreplstart cPMOP->op_pmreplstart opindex |
| 307 | op_pmnext *(OP**)&cPMOP->op_pmnext opindex |
| 308 | #ifdef USE_ITHREADS |
| 309 | op_pmstashpv cPMOP pvindex x |
| 310 | op_pmreplrootpo cPMOP->op_pmreplroot OP*/PADOFFSET |
| 311 | #else |
| 312 | op_pmstash *(SV**)&cPMOP->op_pmstash svindex |
| 313 | op_pmreplrootgv *(SV**)&cPMOP->op_pmreplroot svindex |
| 314 | #endif |
| 315 | pregcomp PL_op pvcontents x |
| 316 | op_pmflags cPMOP->op_pmflags U16 |
| 317 | op_pmpermflags cPMOP->op_pmpermflags U16 |
| 318 | op_pmdynflags cPMOP->op_pmdynflags U8 |
| 319 | op_sv cSVOP->op_sv svindex |
| 320 | op_padix cPADOP->op_padix PADOFFSET |
| 321 | op_pv cPVOP->op_pv pvcontents |
| 322 | op_pv_tr cPVOP->op_pv op_tr_array |
| 323 | op_redoop cLOOP->op_redoop opindex |
| 324 | op_nextop cLOOP->op_nextop opindex |
| 325 | op_lastop cLOOP->op_lastop opindex |
| 326 | cop_label cCOP->cop_label pvindex |
| 327 | #ifdef USE_ITHREADS |
| 328 | cop_stashpv cCOP pvindex x |
| 329 | cop_file cCOP pvindex x |
| 330 | #else |
| 331 | cop_stash cCOP svindex x |
| 332 | cop_filegv cCOP svindex x |
| 333 | #endif |
| 334 | cop_seq cCOP->cop_seq U32 |
| 335 | cop_arybase cCOP I32 x |
| 336 | cop_line cCOP->cop_line line_t |
| 337 | cop_warnings cCOP svindex x |
| 338 | main_start PL_main_start opindex |
| 339 | main_root PL_main_root opindex |
| 340 | main_cv *(SV**)&PL_main_cv svindex |
| 341 | curpad PL_curpad svindex x |
| 342 | push_begin PL_beginav svindex x |
| 343 | push_init PL_initav svindex x |
| 344 | push_end PL_endav svindex x |
| 345 | curstash *(SV**)&PL_curstash svindex |
| 346 | defstash *(SV**)&PL_defstash svindex |
| 347 | data none U8 x |
| 348 | incav *(SV**)&GvAV(PL_incgv) svindex |
| 349 | load_glob none svindex x |
| 350 | #ifdef USE_ITHREADS |
| 351 | regex_padav *(SV**)&PL_regex_padav svindex |
| 352 | #endif |
| 353 | dowarn PL_dowarn U8 |
| 354 | comppad_name *(SV**)&PL_comppad_name svindex |
| 355 | xgv_stash *(SV**)&GvSTASH(bstate->bs_sv) svindex |
| 356 | signal bstate->bs_sv strconst x |
| 357 | # to be removed |
| 358 | formfeed PL_formfeed svindex |