| 1 | BEGIN { |
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| 2 | push @INC, './lib'; |
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| 3 | } |
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| 4 | use strict; |
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| 5 | my %alias_to = ( |
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| 6 | U32 => [qw(PADOFFSET STRLEN)], |
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| 7 | I32 => [qw(SSize_t long)], |
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| 8 | U16 => [qw(OPCODE line_t short)], |
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| 9 | U8 => [qw(char)], |
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| 10 | ); |
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| 11 | |
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| 12 | my @optype= qw(OP UNOP BINOP LOGOP LISTOP PMOP SVOP PADOP PVOP LOOP COP); |
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| 13 | |
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| 14 | # Nullsv *must* come first in the following so that the condition |
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| 15 | # ($$sv == 0) can continue to be used to test (sv == Nullsv). |
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| 16 | my @specialsv = qw(Nullsv &PL_sv_undef &PL_sv_yes &PL_sv_no pWARN_ALL pWARN_NONE); |
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| 17 | |
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| 18 | my (%alias_from, $from, $tos); |
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| 19 | while (($from, $tos) = each %alias_to) { |
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| 20 | map { $alias_from{$_} = $from } @$tos; |
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| 21 | } |
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| 22 | |
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| 23 | my $c_header = <<'EOT'; |
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| 24 | /* |
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| 25 | * Copyright (c) 1996-1999 Malcolm Beattie |
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| 26 | * |
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| 27 | * You may distribute under the terms of either the GNU General Public |
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| 28 | * License or the Artistic License, as specified in the README file. |
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| 29 | * |
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| 30 | */ |
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| 31 | /* |
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| 32 | * This file is autogenerated from bytecode.pl. Changes made here will be lost. |
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| 33 | */ |
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| 34 | EOT |
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| 35 | |
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| 36 | my $perl_header; |
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| 37 | ($perl_header = $c_header) =~ s{[/ ]?\*/?}{#}g; |
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| 38 | |
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| 39 | unlink "ext/ByteLoader/byterun.c", "ext/ByteLoader/byterun.h", "ext/B/B/Asmdata.pm"; |
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| 40 | |
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| 41 | # |
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| 42 | # Start with boilerplate for Asmdata.pm |
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| 43 | # |
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| 44 | open(ASMDATA_PM, ">ext/B/B/Asmdata.pm") or die "ext/B/B/Asmdata.pm: $!"; |
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| 45 | print ASMDATA_PM $perl_header, <<'EOT'; |
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| 46 | package B::Asmdata; |
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| 47 | |
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| 48 | our $VERSION = '1.00'; |
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| 49 | |
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| 50 | use Exporter; |
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| 51 | @ISA = qw(Exporter); |
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| 52 | @EXPORT_OK = qw(%insn_data @insn_name @optype @specialsv_name); |
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| 53 | our(%insn_data, @insn_name, @optype, @specialsv_name); |
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| 54 | |
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| 55 | EOT |
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| 56 | print ASMDATA_PM <<"EOT"; |
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| 57 | \@optype = qw(@optype); |
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| 58 | \@specialsv_name = qw(@specialsv); |
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| 59 | |
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| 60 | # XXX insn_data is initialised this way because with a large |
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| 61 | # %insn_data = (foo => [...], bar => [...], ...) initialiser |
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| 62 | # I get a hard-to-track-down stack underflow and segfault. |
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| 63 | EOT |
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| 64 | |
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| 65 | # |
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| 66 | # Boilerplate for byterun.c |
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| 67 | # |
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| 68 | open(BYTERUN_C, ">ext/ByteLoader/byterun.c") or die "ext/ByteLoader/byterun.c: $!"; |
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| 69 | print BYTERUN_C $c_header, <<'EOT'; |
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| 70 | |
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| 71 | #define PERL_NO_GET_CONTEXT |
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| 72 | #include "EXTERN.h" |
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| 73 | #include "perl.h" |
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| 74 | #define NO_XSLOCKS |
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| 75 | #include "XSUB.h" |
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| 76 | |
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| 77 | #include "byterun.h" |
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| 78 | #include "bytecode.h" |
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| 79 | |
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| 80 | |
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| 81 | static const int optype_size[] = { |
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| 82 | EOT |
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| 83 | my $i = 0; |
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| 84 | for ($i = 0; $i < @optype - 1; $i++) { |
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| 85 | printf BYTERUN_C " sizeof(%s),\n", $optype[$i], $i; |
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| 86 | } |
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| 87 | printf BYTERUN_C " sizeof(%s)\n", $optype[$i], $i; |
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| 88 | print BYTERUN_C <<'EOT'; |
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| 89 | }; |
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| 90 | |
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| 91 | void * |
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| 92 | bset_obj_store(pTHX_ struct byteloader_state *bstate, void *obj, I32 ix) |
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| 93 | { |
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| 94 | if (ix > bstate->bs_obj_list_fill) { |
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| 95 | Renew(bstate->bs_obj_list, ix + 32, void*); |
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| 96 | bstate->bs_obj_list_fill = ix + 31; |
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| 97 | } |
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| 98 | bstate->bs_obj_list[ix] = obj; |
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| 99 | return obj; |
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| 100 | } |
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| 101 | |
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| 102 | void |
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| 103 | byterun(pTHX_ register struct byteloader_state *bstate) |
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| 104 | { |
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| 105 | register int insn; |
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| 106 | U32 ix; |
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| 107 | SV *specialsv_list[6]; |
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| 108 | |
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| 109 | BYTECODE_HEADER_CHECK; /* croak if incorrect platform */ |
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| 110 | New(666, bstate->bs_obj_list, 32, void*); /* set op objlist */ |
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| 111 | bstate->bs_obj_list_fill = 31; |
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| 112 | |
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| 113 | EOT |
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| 114 | |
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| 115 | for my $i ( 0 .. $#specialsv ) { |
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| 116 | print BYTERUN_C " specialsv_list[$i] = $specialsv[$i];\n"; |
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| 117 | } |
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| 118 | |
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| 119 | print BYTERUN_C <<'EOT'; |
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| 120 | |
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| 121 | while ((insn = BGET_FGETC()) != EOF) { |
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| 122 | switch (insn) { |
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| 123 | EOT |
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| 124 | |
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| 125 | |
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| 126 | my (@insn_name, $insn_num, $insn, $lvalue, $argtype, $flags, $fundtype); |
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| 127 | |
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| 128 | while (<DATA>) { |
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| 129 | chop; |
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| 130 | s/#.*//; # remove comments |
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| 131 | next unless length; |
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| 132 | if (/^%number\s+(.*)/) { |
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| 133 | $insn_num = $1; |
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| 134 | next; |
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| 135 | } elsif (/%enum\s+(.*?)\s+(.*)/) { |
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| 136 | create_enum($1, $2); # must come before instructions |
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| 137 | next; |
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| 138 | } |
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| 139 | ($insn, $lvalue, $argtype, $flags) = split; |
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| 140 | $insn_name[$insn_num] = $insn; |
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| 141 | $fundtype = $alias_from{$argtype} || $argtype; |
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| 142 | |
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| 143 | # |
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| 144 | # Add the case statement and code for the bytecode interpreter in byterun.c |
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| 145 | # |
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| 146 | printf BYTERUN_C "\t case INSN_%s:\t\t/* %d */\n\t {\n", |
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| 147 | uc($insn), $insn_num; |
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| 148 | my $optarg = $argtype eq "none" ? "" : ", arg"; |
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| 149 | if ($optarg) { |
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| 150 | printf BYTERUN_C "\t\t$argtype arg;\n\t\tBGET_%s(arg);\n", $fundtype; |
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| 151 | } |
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| 152 | if ($flags =~ /x/) { |
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| 153 | print BYTERUN_C "\t\tBSET_$insn($lvalue$optarg);\n"; |
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| 154 | } elsif ($flags =~ /s/) { |
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| 155 | # Store instructions store to bytecode_obj_list[arg]. "lvalue" field is rvalue. |
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| 156 | print BYTERUN_C "\t\tBSET_OBJ_STORE($lvalue$optarg);\n"; |
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| 157 | } |
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| 158 | elsif ($optarg && $lvalue ne "none") { |
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| 159 | print BYTERUN_C "\t\t$lvalue = arg;\n"; |
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| 160 | } |
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| 161 | print BYTERUN_C "\t\tbreak;\n\t }\n"; |
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| 162 | |
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| 163 | # |
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| 164 | # Add the initialiser line for %insn_data in Asmdata.pm |
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| 165 | # |
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| 166 | print ASMDATA_PM <<"EOT"; |
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| 167 | \$insn_data{$insn} = [$insn_num, \\&PUT_$fundtype, "GET_$fundtype"]; |
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| 168 | EOT |
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| 169 | |
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| 170 | # Find the next unused instruction number |
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| 171 | do { $insn_num++ } while $insn_name[$insn_num]; |
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| 172 | } |
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| 173 | |
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| 174 | # |
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| 175 | # Finish off byterun.c |
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| 176 | # |
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| 177 | print BYTERUN_C <<'EOT'; |
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| 178 | default: |
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| 179 | Perl_croak(aTHX_ "Illegal bytecode instruction %d\n", insn); |
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| 180 | /* NOTREACHED */ |
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| 181 | } |
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| 182 | } |
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| 183 | } |
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| 184 | EOT |
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| 185 | |
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| 186 | # |
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| 187 | # Write the instruction and optype enum constants into byterun.h |
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| 188 | # |
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| 189 | open(BYTERUN_H, ">ext/ByteLoader/byterun.h") or die "ext/ByteLoader/byterun.h: $!"; |
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| 190 | print BYTERUN_H $c_header, <<'EOT'; |
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| 191 | struct byteloader_fdata { |
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| 192 | SV *datasv; |
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| 193 | int next_out; |
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| 194 | int idx; |
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| 195 | }; |
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| 196 | |
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| 197 | struct byteloader_state { |
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| 198 | struct byteloader_fdata *bs_fdata; |
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| 199 | SV *bs_sv; |
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| 200 | void **bs_obj_list; |
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| 201 | int bs_obj_list_fill; |
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| 202 | XPV bs_pv; |
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| 203 | int bs_iv_overflows; |
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| 204 | }; |
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| 205 | |
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| 206 | int bl_getc(struct byteloader_fdata *); |
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| 207 | int bl_read(struct byteloader_fdata *, char *, size_t, size_t); |
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| 208 | extern void byterun(pTHX_ struct byteloader_state *); |
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| 209 | |
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| 210 | enum { |
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| 211 | EOT |
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| 212 | |
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| 213 | my $add_enum_value = 0; |
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| 214 | my $max_insn; |
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| 215 | for $i ( 0 .. $#insn_name ) { |
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| 216 | $insn = uc($insn_name[$i]); |
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| 217 | if (defined($insn)) { |
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| 218 | $max_insn = $i; |
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| 219 | if ($add_enum_value) { |
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| 220 | print BYTERUN_H " INSN_$insn = $i,\t\t\t/* $i */\n"; |
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| 221 | $add_enum_value = 0; |
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| 222 | } else { |
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| 223 | print BYTERUN_H " INSN_$insn,\t\t\t/* $i */\n"; |
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| 224 | } |
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| 225 | } else { |
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| 226 | $add_enum_value = 1; |
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| 227 | } |
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| 228 | } |
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| 229 | |
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| 230 | print BYTERUN_H " MAX_INSN = $max_insn\n};\n"; |
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| 231 | |
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| 232 | print BYTERUN_H "\nenum {\n"; |
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| 233 | for ($i = 0; $i < @optype - 1; $i++) { |
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| 234 | printf BYTERUN_H " OPt_%s,\t\t/* %d */\n", $optype[$i], $i; |
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| 235 | } |
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| 236 | printf BYTERUN_H " OPt_%s\t\t/* %d */\n};\n\n", $optype[$i], $i; |
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| 237 | |
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| 238 | # |
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| 239 | # Finish off insn_data and create array initialisers in Asmdata.pm |
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| 240 | # |
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| 241 | print ASMDATA_PM <<'EOT'; |
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| 242 | |
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| 243 | my ($insn_name, $insn_data); |
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| 244 | while (($insn_name, $insn_data) = each %insn_data) { |
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| 245 | $insn_name[$insn_data->[0]] = $insn_name; |
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| 246 | } |
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| 247 | # Fill in any gaps |
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| 248 | @insn_name = map($_ || "unused", @insn_name); |
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| 249 | |
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| 250 | 1; |
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| 251 | |
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| 252 | __END__ |
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| 253 | |
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| 254 | =head1 NAME |
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| 255 | |
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| 256 | B::Asmdata - Autogenerated data about Perl ops, used to generate bytecode |
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| 257 | |
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| 258 | =head1 SYNOPSIS |
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| 259 | |
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| 260 | use B::Asmdata qw(%insn_data @insn_name @optype @specialsv_name); |
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| 261 | |
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| 262 | =head1 DESCRIPTION |
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| 263 | |
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| 264 | Provides information about Perl ops in order to generate bytecode via |
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| 265 | a bunch of exported variables. Its mostly used by B::Assembler and |
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| 266 | B::Disassembler. |
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| 267 | |
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| 268 | =over 4 |
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| 269 | |
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| 270 | =item %insn_data |
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| 271 | |
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| 272 | my($bytecode_num, $put_sub, $get_meth) = @$insn_data{$op_name}; |
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| 273 | |
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| 274 | For a given $op_name (for example, 'cop_label', 'sv_flags', etc...) |
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| 275 | you get an array ref containing the bytecode number of the op, a |
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| 276 | reference to the subroutine used to 'PUT', and the name of the method |
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| 277 | used to 'GET'. |
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| 278 | |
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| 279 | =for _private |
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| 280 | Add more detail about what $put_sub and $get_meth are and how to use them. |
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| 281 | |
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| 282 | =item @insn_name |
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| 283 | |
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| 284 | my $op_name = $insn_name[$bytecode_num]; |
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| 285 | |
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| 286 | A simple mapping of the bytecode number to the name of the op. |
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| 287 | Suitable for using with %insn_data like so: |
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| 288 | |
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| 289 | my $op_info = $insn_data{$insn_name[$bytecode_num]}; |
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| 290 | |
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| 291 | =item @optype |
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| 292 | |
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| 293 | my $op_type = $optype[$op_type_num]; |
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| 294 | |
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| 295 | A simple mapping of the op type number to its type (like 'COP' or 'BINOP'). |
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| 296 | |
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| 297 | =item @specialsv_name |
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| 298 | |
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| 299 | my $sv_name = $specialsv_name[$sv_index]; |
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| 300 | |
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| 301 | Certain SV types are considered 'special'. They're represented by |
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| 302 | B::SPECIAL and are refered to by a number from the specialsv_list. |
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| 303 | This array maps that number back to the name of the SV (like 'Nullsv' |
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| 304 | or '&PL_sv_undef'). |
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| 305 | |
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| 306 | =back |
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| 307 | |
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| 308 | =head1 AUTHOR |
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| 309 | |
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| 310 | Malcolm Beattie, C<mbeattie@sable.ox.ac.uk> |
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| 311 | |
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| 312 | =cut |
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| 313 | EOT |
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| 314 | |
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| 315 | __END__ |
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| 316 | # First set instruction ord("#") to read comment to end-of-line (sneaky) |
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| 317 | %number 35 |
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| 318 | comment arg comment_t |
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| 319 | # Then make ord("\n") into a no-op |
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| 320 | %number 10 |
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| 321 | nop none none |
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| 322 | # Now for the rest of the ordinary ones, beginning with \0 which is |
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| 323 | # ret so that \0-terminated strings can be read properly as bytecode. |
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| 324 | %number 0 |
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| 325 | # |
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| 326 | #opcode lvalue argtype flags |
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| 327 | # |
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| 328 | ret none none x |
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| 329 | ldsv bstate->bs_sv svindex |
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| 330 | ldop PL_op opindex |
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| 331 | stsv bstate->bs_sv U32 s |
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| 332 | stop PL_op U32 s |
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| 333 | stpv bstate->bs_pv.xpv_pv U32 x |
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| 334 | ldspecsv bstate->bs_sv U8 x |
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| 335 | newsv bstate->bs_sv U8 x |
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| 336 | newop PL_op U8 x |
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| 337 | newopn PL_op U8 x |
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| 338 | newpv none PV |
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| 339 | pv_cur bstate->bs_pv.xpv_cur STRLEN |
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| 340 | pv_free bstate->bs_pv none x |
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| 341 | sv_upgrade bstate->bs_sv U8 x |
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| 342 | sv_refcnt SvREFCNT(bstate->bs_sv) U32 |
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| 343 | sv_refcnt_add SvREFCNT(bstate->bs_sv) I32 x |
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| 344 | sv_flags SvFLAGS(bstate->bs_sv) U32 |
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| 345 | xrv SvRV(bstate->bs_sv) svindex |
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| 346 | xpv bstate->bs_sv none x |
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| 347 | xiv32 SvIVX(bstate->bs_sv) I32 |
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| 348 | xiv64 SvIVX(bstate->bs_sv) IV64 |
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| 349 | xnv SvNVX(bstate->bs_sv) NV |
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| 350 | xlv_targoff LvTARGOFF(bstate->bs_sv) STRLEN |
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| 351 | xlv_targlen LvTARGLEN(bstate->bs_sv) STRLEN |
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| 352 | xlv_targ LvTARG(bstate->bs_sv) svindex |
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| 353 | xlv_type LvTYPE(bstate->bs_sv) char |
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| 354 | xbm_useful BmUSEFUL(bstate->bs_sv) I32 |
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| 355 | xbm_previous BmPREVIOUS(bstate->bs_sv) U16 |
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| 356 | xbm_rare BmRARE(bstate->bs_sv) U8 |
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| 357 | xfm_lines FmLINES(bstate->bs_sv) IV |
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| 358 | xio_lines IoLINES(bstate->bs_sv) IV |
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| 359 | xio_page IoPAGE(bstate->bs_sv) IV |
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| 360 | xio_page_len IoPAGE_LEN(bstate->bs_sv) IV |
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| 361 | xio_lines_left IoLINES_LEFT(bstate->bs_sv) IV |
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| 362 | xio_top_name IoTOP_NAME(bstate->bs_sv) pvcontents |
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| 363 | xio_top_gv *(SV**)&IoTOP_GV(bstate->bs_sv) svindex |
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| 364 | xio_fmt_name IoFMT_NAME(bstate->bs_sv) pvcontents |
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| 365 | xio_fmt_gv *(SV**)&IoFMT_GV(bstate->bs_sv) svindex |
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| 366 | xio_bottom_name IoBOTTOM_NAME(bstate->bs_sv) pvcontents |
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| 367 | xio_bottom_gv *(SV**)&IoBOTTOM_GV(bstate->bs_sv) svindex |
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| 368 | xio_subprocess IoSUBPROCESS(bstate->bs_sv) short |
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| 369 | xio_type IoTYPE(bstate->bs_sv) char |
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| 370 | xio_flags IoFLAGS(bstate->bs_sv) char |
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| 371 | xcv_stash *(SV**)&CvSTASH(bstate->bs_sv) svindex |
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| 372 | xcv_start CvSTART(bstate->bs_sv) opindex |
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| 373 | xcv_root CvROOT(bstate->bs_sv) opindex |
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| 374 | xcv_gv *(SV**)&CvGV(bstate->bs_sv) svindex |
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| 375 | xcv_file CvFILE(bstate->bs_sv) pvindex |
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| 376 | xcv_depth CvDEPTH(bstate->bs_sv) long |
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| 377 | xcv_padlist *(SV**)&CvPADLIST(bstate->bs_sv) svindex |
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| 378 | xcv_outside *(SV**)&CvOUTSIDE(bstate->bs_sv) svindex |
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| 379 | xcv_flags CvFLAGS(bstate->bs_sv) U16 |
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| 380 | av_extend bstate->bs_sv SSize_t x |
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| 381 | av_push bstate->bs_sv svindex x |
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| 382 | xav_fill AvFILLp(bstate->bs_sv) SSize_t |
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| 383 | xav_max AvMAX(bstate->bs_sv) SSize_t |
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| 384 | xav_flags AvFLAGS(bstate->bs_sv) U8 |
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| 385 | xhv_riter HvRITER(bstate->bs_sv) I32 |
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| 386 | xhv_name HvNAME(bstate->bs_sv) pvcontents |
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| 387 | hv_store bstate->bs_sv svindex x |
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| 388 | sv_magic bstate->bs_sv char x |
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| 389 | mg_obj SvMAGIC(bstate->bs_sv)->mg_obj svindex |
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| 390 | mg_private SvMAGIC(bstate->bs_sv)->mg_private U16 |
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| 391 | mg_flags SvMAGIC(bstate->bs_sv)->mg_flags U8 |
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| 392 | mg_pv SvMAGIC(bstate->bs_sv) pvcontents x |
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| 393 | xmg_stash *(SV**)&SvSTASH(bstate->bs_sv) svindex |
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| 394 | gv_fetchpv bstate->bs_sv strconst x |
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| 395 | gv_stashpv bstate->bs_sv strconst x |
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| 396 | gp_sv GvSV(bstate->bs_sv) svindex |
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| 397 | gp_refcnt GvREFCNT(bstate->bs_sv) U32 |
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| 398 | gp_refcnt_add GvREFCNT(bstate->bs_sv) I32 x |
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| 399 | gp_av *(SV**)&GvAV(bstate->bs_sv) svindex |
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| 400 | gp_hv *(SV**)&GvHV(bstate->bs_sv) svindex |
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| 401 | gp_cv *(SV**)&GvCV(bstate->bs_sv) svindex |
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| 402 | gp_file GvFILE(bstate->bs_sv) pvindex |
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| 403 | gp_io *(SV**)&GvIOp(bstate->bs_sv) svindex |
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| 404 | gp_form *(SV**)&GvFORM(bstate->bs_sv) svindex |
|---|
| 405 | gp_cvgen GvCVGEN(bstate->bs_sv) U32 |
|---|
| 406 | gp_line GvLINE(bstate->bs_sv) line_t |
|---|
| 407 | gp_share bstate->bs_sv svindex x |
|---|
| 408 | xgv_flags GvFLAGS(bstate->bs_sv) U8 |
|---|
| 409 | op_next PL_op->op_next opindex |
|---|
| 410 | op_sibling PL_op->op_sibling opindex |
|---|
| 411 | op_ppaddr PL_op->op_ppaddr strconst x |
|---|
| 412 | op_targ PL_op->op_targ PADOFFSET |
|---|
| 413 | op_type PL_op OPCODE x |
|---|
| 414 | op_seq PL_op->op_seq U16 |
|---|
| 415 | op_flags PL_op->op_flags U8 |
|---|
| 416 | op_private PL_op->op_private U8 |
|---|
| 417 | op_first cUNOP->op_first opindex |
|---|
| 418 | op_last cBINOP->op_last opindex |
|---|
| 419 | op_other cLOGOP->op_other opindex |
|---|
| 420 | op_pmreplroot cPMOP->op_pmreplroot opindex |
|---|
| 421 | op_pmreplrootgv *(SV**)&cPMOP->op_pmreplroot svindex |
|---|
| 422 | op_pmreplstart cPMOP->op_pmreplstart opindex |
|---|
| 423 | op_pmnext *(OP**)&cPMOP->op_pmnext opindex |
|---|
| 424 | pregcomp PL_op pvcontents x |
|---|
| 425 | op_pmflags cPMOP->op_pmflags U16 |
|---|
| 426 | op_pmpermflags cPMOP->op_pmpermflags U16 |
|---|
| 427 | op_sv cSVOP->op_sv svindex |
|---|
| 428 | op_padix cPADOP->op_padix PADOFFSET |
|---|
| 429 | op_pv cPVOP->op_pv pvcontents |
|---|
| 430 | op_pv_tr cPVOP->op_pv op_tr_array |
|---|
| 431 | op_redoop cLOOP->op_redoop opindex |
|---|
| 432 | op_nextop cLOOP->op_nextop opindex |
|---|
| 433 | op_lastop cLOOP->op_lastop opindex |
|---|
| 434 | cop_label cCOP->cop_label pvindex |
|---|
| 435 | cop_stashpv cCOP pvindex x |
|---|
| 436 | cop_file cCOP pvindex x |
|---|
| 437 | cop_seq cCOP->cop_seq U32 |
|---|
| 438 | cop_arybase cCOP->cop_arybase I32 |
|---|
| 439 | cop_line cCOP line_t x |
|---|
| 440 | cop_warnings cCOP->cop_warnings svindex |
|---|
| 441 | main_start PL_main_start opindex |
|---|
| 442 | main_root PL_main_root opindex |
|---|
| 443 | curpad PL_curpad svindex x |
|---|
| 444 | push_begin PL_beginav svindex x |
|---|
| 445 | push_init PL_initav svindex x |
|---|
| 446 | push_end PL_endav svindex x |
|---|
