BEGIN {
push @INC, './lib';
+ require 'regen_lib.pl';
}
use strict;
my %alias_to = (
- U32 => [qw(PADOFFSET STRLEN)],
- I32 => [qw(SSize_t long)],
- U16 => [qw(OPCODE line_t short)],
- U8 => [qw(char)],
+ U32 => [qw(line_t)],
+ PADOFFSET => [qw(STRLEN SSize_t)],
+ U16 => [qw(OPCODE short)],
+ U8 => [qw(char)],
);
-my @optype= qw(OP UNOP BINOP LOGOP LISTOP PMOP SVOP PADOP PVOP LOOP COP);
-
-# Nullsv *must* come first in the following so that the condition
-# ($$sv == 0) can continue to be used to test (sv == Nullsv).
-my @specialsv = qw(Nullsv &PL_sv_undef &PL_sv_yes &PL_sv_no);
-
my (%alias_from, $from, $tos);
while (($from, $tos) = each %alias_to) {
map { $alias_from{$_} = $from } @$tos;
}
my $c_header = <<'EOT';
-/*
+/* -*- buffer-read-only: t -*-
+ *
* Copyright (c) 1996-1999 Malcolm Beattie
*
* You may distribute under the terms of either the GNU General Public
my $perl_header;
($perl_header = $c_header) =~ s{[/ ]?\*/?}{#}g;
-unlink "ext/ByteLoader/byterun.c", "ext/ByteLoader/byterun.h", "ext/B/B/Asmdata.pm";
+safer_unlink "ext/B/B/Asmdata.pm";
#
# Start with boilerplate for Asmdata.pm
#
open(ASMDATA_PM, ">ext/B/B/Asmdata.pm") or die "ext/B/B/Asmdata.pm: $!";
+binmode ASMDATA_PM;
print ASMDATA_PM $perl_header, <<'EOT';
package B::Asmdata;
+
+our $VERSION = '1.02';
+
use Exporter;
@ISA = qw(Exporter);
@EXPORT_OK = qw(%insn_data @insn_name @optype @specialsv_name);
-use vars qw(%insn_data @insn_name @optype @specialsv_name);
+our(%insn_data, @insn_name);
+use B qw(@optype @specialsv_name);
EOT
print ASMDATA_PM <<"EOT";
-\@optype = qw(@optype);
-\@specialsv_name = qw(@specialsv);
# XXX insn_data is initialised this way because with a large
# %insn_data = (foo => [...], bar => [...], ...) initialiser
# I get a hard-to-track-down stack underflow and segfault.
EOT
-#
-# Boilerplate for byterun.c
-#
-open(BYTERUN_C, ">ext/ByteLoader/byterun.c") or die "ext/ByteLoader/byterun.c: $!";
-print BYTERUN_C $c_header, <<'EOT';
-
-#define PERL_NO_GET_CONTEXT
-#include "EXTERN.h"
-#include "perl.h"
-#define NO_XSLOCKS
-#include "XSUB.h"
-
-#ifdef PERL_OBJECT
-#undef CALL_FPTR
-#define CALL_FPTR(fptr) (pPerl->*fptr)
-#undef PL_ppaddr
-#define PL_ppaddr (*get_ppaddr())
-#endif
-
-#include "byterun.h"
-#include "bytecode.h"
-
-
-static int optype_size[] = {
-EOT
-my $i = 0;
-for ($i = 0; $i < @optype - 1; $i++) {
- printf BYTERUN_C " sizeof(%s),\n", $optype[$i], $i;
-}
-printf BYTERUN_C " sizeof(%s)\n", $optype[$i], $i;
-print BYTERUN_C <<'EOT';
-};
-
-static SV *specialsv_list[4];
-
-static int bytecode_iv_overflows = 0;
-static SV *bytecode_sv;
-static XPV bytecode_pv;
-static void **bytecode_obj_list;
-static I32 bytecode_obj_list_fill = -1;
-
-void *
-bset_obj_store(pTHXo_ void *obj, I32 ix)
-{
- if (ix > bytecode_obj_list_fill) {
- if (bytecode_obj_list_fill == -1)
- New(666, bytecode_obj_list, ix + 1, void*);
- else
- Renew(bytecode_obj_list, ix + 1, void*);
- bytecode_obj_list_fill = ix;
- }
- bytecode_obj_list[ix] = obj;
- return obj;
-}
-
-void
-byterun(pTHXo_ struct bytestream bs)
-{
- dTHR;
- int insn;
-
-EOT
-
-for (my $i = 0; $i < @specialsv; $i++) {
- print BYTERUN_C " specialsv_list[$i] = $specialsv[$i];\n";
-}
-
-print BYTERUN_C <<'EOT';
-
- while ((insn = BGET_FGETC()) != EOF) {
- switch (insn) {
-EOT
-
-
my (@insn_name, $insn_num, $insn, $lvalue, $argtype, $flags, $fundtype);
while (<DATA>) {
+ if (/^\s*#/) {
+ next;
+ }
chop;
- s/#.*//; # remove comments
next unless length;
if (/^%number\s+(.*)/) {
$insn_num = $1;
next;
}
($insn, $lvalue, $argtype, $flags) = split;
+ my $rvalcast = '';
+ if ($argtype =~ m:(.+)/(.+):) {
+ ($rvalcast, $argtype) = ("($1)", $2);
+ }
$insn_name[$insn_num] = $insn;
$fundtype = $alias_from{$argtype} || $argtype;
#
- # Add the case statement and code for the bytecode interpreter in byterun.c
- #
- printf BYTERUN_C "\t case INSN_%s:\t\t/* %d */\n\t {\n",
- uc($insn), $insn_num;
- my $optarg = $argtype eq "none" ? "" : ", arg";
- if ($optarg) {
- printf BYTERUN_C "\t\t$argtype arg;\n\t\tBGET_%s(arg);\n", $fundtype;
- }
- if ($flags =~ /x/) {
- print BYTERUN_C "\t\tBSET_$insn($lvalue$optarg);\n";
- } elsif ($flags =~ /s/) {
- # Store instructions store to bytecode_obj_list[arg]. "lvalue" field is rvalue.
- print BYTERUN_C "\t\tBSET_OBJ_STORE($lvalue$optarg);\n";
- }
- elsif ($optarg && $lvalue ne "none") {
- print BYTERUN_C "\t\t$lvalue = arg;\n";
- }
- print BYTERUN_C "\t\tbreak;\n\t }\n";
-
- #
# Add the initialiser line for %insn_data in Asmdata.pm
#
print ASMDATA_PM <<"EOT";
}
#
-# Finish off byterun.c
-#
-print BYTERUN_C <<'EOT';
- default:
- Perl_croak(aTHX_ "Illegal bytecode instruction %d\n", insn);
- /* NOTREACHED */
- }
- }
-}
-EOT
-
-#
-# Write the instruction and optype enum constants into byterun.h
-#
-open(BYTERUN_H, ">ext/ByteLoader/byterun.h") or die "ext/ByteLoader/byterun.h: $!";
-print BYTERUN_H $c_header, <<'EOT';
-struct bytestream {
- void *data;
- int (*pfgetc)(void *);
- int (*pfread)(char *, size_t, size_t, void *);
- void (*pfreadpv)(U32, void *, XPV *);
-};
-
-enum {
-EOT
-
-my $add_enum_value = 0;
-my $max_insn;
-for ($i = 0; $i < @insn_name; $i++) {
- $insn = uc($insn_name[$i]);
- if (defined($insn)) {
- $max_insn = $i;
- if ($add_enum_value) {
- print BYTERUN_H " INSN_$insn = $i,\t\t\t/* $i */\n";
- $add_enum_value = 0;
- } else {
- print BYTERUN_H " INSN_$insn,\t\t\t/* $i */\n";
- }
- } else {
- $add_enum_value = 1;
- }
-}
-
-print BYTERUN_H " MAX_INSN = $max_insn\n};\n";
-
-print BYTERUN_H "\nenum {\n";
-for ($i = 0; $i < @optype - 1; $i++) {
- printf BYTERUN_H " OPt_%s,\t\t/* %d */\n", $optype[$i], $i;
-}
-printf BYTERUN_H " OPt_%s\t\t/* %d */\n};\n\n", $optype[$i], $i;
-
-print BYTERUN_H <<'EOT';
-extern void byterun(pTHXo_ struct bytestream bs);
-
-#define INIT_SPECIALSV_LIST STMT_START { \
-EOT
-for ($i = 0; $i < @specialsv; $i++) {
- print BYTERUN_H "\tPL_specialsv_list[$i] = $specialsv[$i]; \\\n";
-}
-print BYTERUN_H <<'EOT';
- } STMT_END
-EOT
-
-#
# Finish off insn_data and create array initialisers in Asmdata.pm
#
print ASMDATA_PM <<'EOT';
=head1 NAME
-B::Asmdata - Autogenerated data about Perl ops, used to generate bytecode
+B::Asmdata - Autogenerated data about Perl ops
=head1 SYNOPSIS
- use Asmdata;
+ use B::Asmdata qw(%insn_data @insn_name @optype @specialsv_name);
=head1 DESCRIPTION
-See F<ext/B/B/Asmdata.pm>.
+Provides information about Perl ops in order to generate bytecode via
+a bunch of exported variables. Its mostly used by B::Assembler and
+B::Disassembler.
+
+=over 4
+
+=item %insn_data
+
+ my($bytecode_num, $put_sub, $get_meth) = @$insn_data{$op_name};
+
+For a given $op_name (for example, 'cop_label', 'sv_flags', etc...)
+you get an array ref containing the bytecode number of the op, a
+reference to the subroutine used to 'PUT', and the name of the method
+used to 'GET'.
+
+=for _private
+Add more detail about what $put_sub and $get_meth are and how to use them.
+
+=item @insn_name
+
+ my $op_name = $insn_name[$bytecode_num];
+
+A simple mapping of the bytecode number to the name of the op.
+Suitable for using with %insn_data like so:
+
+ my $op_info = $insn_data{$insn_name[$bytecode_num]};
+
+=item @optype
+
+ my $op_type = $optype[$op_type_num];
+
+A simple mapping of the op type number to its type (like 'COP' or 'BINOP').
+
+=item @specialsv_name
+
+ my $sv_name = $specialsv_name[$sv_index];
+
+Certain SV types are considered 'special'. They're represented by
+B::SPECIAL and are referred to by a number from the specialsv_list.
+This array maps that number back to the name of the SV (like 'Nullsv'
+or '&PL_sv_undef').
+
+=back
=head1 AUTHOR
Malcolm Beattie, C<mbeattie@sable.ox.ac.uk>
=cut
+
+# ex: set ro:
EOT
+
+close ASMDATA_PM or die "Error closing ASMDATA_PM: $!";
+
__END__
# First set instruction ord("#") to read comment to end-of-line (sneaky)
%number 35
# Then make ord("\n") into a no-op
%number 10
nop none none
+
# Now for the rest of the ordinary ones, beginning with \0 which is
# ret so that \0-terminated strings can be read properly as bytecode.
%number 0
#
+# The argtype is either a single type or "rightvaluecast/argtype".
+#
#opcode lvalue argtype flags
#
ret none none x
-ldsv bytecode_sv svindex
+ldsv bstate->bs_sv svindex
ldop PL_op opindex
-stsv bytecode_sv U32 s
+stsv bstate->bs_sv U32 s
stop PL_op U32 s
-ldspecsv bytecode_sv U8 x
-newsv bytecode_sv U8 x
+stpv bstate->bs_pv.pvx U32 x
+ldspecsv bstate->bs_sv U8 x
+ldspecsvx bstate->bs_sv U8 x
+newsv bstate->bs_sv svtype x
+newsvx bstate->bs_sv svtype x
newop PL_op U8 x
+newopx PL_op U16 x
newopn PL_op U8 x
newpv none PV
-pv_cur bytecode_pv.xpv_cur STRLEN
-pv_free bytecode_pv none x
-sv_upgrade bytecode_sv char x
-sv_refcnt SvREFCNT(bytecode_sv) U32
-sv_refcnt_add SvREFCNT(bytecode_sv) I32 x
-sv_flags SvFLAGS(bytecode_sv) U32
-xrv SvRV(bytecode_sv) svindex
-xpv bytecode_sv none x
-xiv32 SvIVX(bytecode_sv) I32
-xiv64 SvIVX(bytecode_sv) IV64
-xnv SvNVX(bytecode_sv) NV
-xlv_targoff LvTARGOFF(bytecode_sv) STRLEN
-xlv_targlen LvTARGLEN(bytecode_sv) STRLEN
-xlv_targ LvTARG(bytecode_sv) svindex
-xlv_type LvTYPE(bytecode_sv) char
-xbm_useful BmUSEFUL(bytecode_sv) I32
-xbm_previous BmPREVIOUS(bytecode_sv) U16
-xbm_rare BmRARE(bytecode_sv) U8
-xfm_lines FmLINES(bytecode_sv) I32
-xio_lines IoLINES(bytecode_sv) long
-xio_page IoPAGE(bytecode_sv) long
-xio_page_len IoPAGE_LEN(bytecode_sv) long
-xio_lines_left IoLINES_LEFT(bytecode_sv) long
-xio_top_name IoTOP_NAME(bytecode_sv) pvcontents
-xio_top_gv *(SV**)&IoTOP_GV(bytecode_sv) svindex
-xio_fmt_name IoFMT_NAME(bytecode_sv) pvcontents
-xio_fmt_gv *(SV**)&IoFMT_GV(bytecode_sv) svindex
-xio_bottom_name IoBOTTOM_NAME(bytecode_sv) pvcontents
-xio_bottom_gv *(SV**)&IoBOTTOM_GV(bytecode_sv) svindex
-xio_subprocess IoSUBPROCESS(bytecode_sv) short
-xio_type IoTYPE(bytecode_sv) char
-xio_flags IoFLAGS(bytecode_sv) char
-xcv_stash *(SV**)&CvSTASH(bytecode_sv) svindex
-xcv_start CvSTART(bytecode_sv) opindex
-xcv_root CvROOT(bytecode_sv) opindex
-xcv_gv *(SV**)&CvGV(bytecode_sv) svindex
-xcv_file CvFILE(bytecode_sv) pvcontents
-xcv_depth CvDEPTH(bytecode_sv) long
-xcv_padlist *(SV**)&CvPADLIST(bytecode_sv) svindex
-xcv_outside *(SV**)&CvOUTSIDE(bytecode_sv) svindex
-xcv_flags CvFLAGS(bytecode_sv) U8
-av_extend bytecode_sv SSize_t x
-av_push bytecode_sv svindex x
-xav_fill AvFILLp(bytecode_sv) SSize_t
-xav_max AvMAX(bytecode_sv) SSize_t
-xav_flags AvFLAGS(bytecode_sv) U8
-xhv_riter HvRITER(bytecode_sv) I32
-xhv_name HvNAME(bytecode_sv) pvcontents
-hv_store bytecode_sv svindex x
-sv_magic bytecode_sv char x
-mg_obj SvMAGIC(bytecode_sv)->mg_obj svindex
-mg_private SvMAGIC(bytecode_sv)->mg_private U16
-mg_flags SvMAGIC(bytecode_sv)->mg_flags U8
-mg_pv SvMAGIC(bytecode_sv) pvcontents x
-xmg_stash *(SV**)&SvSTASH(bytecode_sv) svindex
-gv_fetchpv bytecode_sv strconst x
-gv_stashpv bytecode_sv strconst x
-gp_sv GvSV(bytecode_sv) svindex
-gp_refcnt GvREFCNT(bytecode_sv) U32
-gp_refcnt_add GvREFCNT(bytecode_sv) I32 x
-gp_av *(SV**)&GvAV(bytecode_sv) svindex
-gp_hv *(SV**)&GvHV(bytecode_sv) svindex
-gp_cv *(SV**)&GvCV(bytecode_sv) svindex
-gp_file GvFILE(bytecode_sv) pvcontents
-gp_io *(SV**)&GvIOp(bytecode_sv) svindex
-gp_form *(SV**)&GvFORM(bytecode_sv) svindex
-gp_cvgen GvCVGEN(bytecode_sv) U32
-gp_line GvLINE(bytecode_sv) line_t
-gp_share bytecode_sv svindex x
-xgv_flags GvFLAGS(bytecode_sv) U8
+pv_cur bstate->bs_pv.xpv.xpv_cur STRLEN
+pv_free bstate->bs_pv.pvx none x
+sv_upgrade bstate->bs_sv svtype x
+sv_refcnt SvREFCNT(bstate->bs_sv) U32
+sv_refcnt_add SvREFCNT(bstate->bs_sv) I32 x
+sv_flags SvFLAGS(bstate->bs_sv) U32
+xrv bstate->bs_sv svindex x
+xpv bstate->bs_sv none x
+xpv_cur bstate->bs_sv STRLEN x
+xpv_len bstate->bs_sv STRLEN x
+xiv bstate->bs_sv IV x
+xnv bstate->bs_sv NV x
+xlv_targoff LvTARGOFF(bstate->bs_sv) STRLEN
+xlv_targlen LvTARGLEN(bstate->bs_sv) STRLEN
+xlv_targ LvTARG(bstate->bs_sv) svindex
+xlv_type LvTYPE(bstate->bs_sv) char
+xbm_useful BmUSEFUL(bstate->bs_sv) I32
+xbm_previous BmPREVIOUS(bstate->bs_sv) U16
+xbm_rare BmRARE(bstate->bs_sv) U8
+xfm_lines FmLINES(bstate->bs_sv) IV
+xio_lines IoLINES(bstate->bs_sv) IV
+xio_page IoPAGE(bstate->bs_sv) IV
+xio_page_len IoPAGE_LEN(bstate->bs_sv) IV
+xio_lines_left IoLINES_LEFT(bstate->bs_sv) IV
+xio_top_name IoTOP_NAME(bstate->bs_sv) pvindex
+xio_top_gv *(SV**)&IoTOP_GV(bstate->bs_sv) svindex
+xio_fmt_name IoFMT_NAME(bstate->bs_sv) pvindex
+xio_fmt_gv *(SV**)&IoFMT_GV(bstate->bs_sv) svindex
+xio_bottom_name IoBOTTOM_NAME(bstate->bs_sv) pvindex
+xio_bottom_gv *(SV**)&IoBOTTOM_GV(bstate->bs_sv) svindex
+xio_subprocess IoSUBPROCESS(bstate->bs_sv) short
+xio_type IoTYPE(bstate->bs_sv) char
+xio_flags IoFLAGS(bstate->bs_sv) char
+xcv_xsubany *(SV**)&CvXSUBANY(bstate->bs_sv).any_ptr svindex
+xcv_stash *(SV**)&CvSTASH(bstate->bs_sv) svindex
+xcv_start CvSTART(bstate->bs_sv) opindex
+xcv_root CvROOT(bstate->bs_sv) opindex
+xcv_gv *(SV**)&CvGV(bstate->bs_sv) svindex
+xcv_file CvFILE(bstate->bs_sv) pvindex
+xcv_depth CvDEPTH(bstate->bs_sv) long
+xcv_padlist *(SV**)&CvPADLIST(bstate->bs_sv) svindex
+xcv_outside *(SV**)&CvOUTSIDE(bstate->bs_sv) svindex
+xcv_outside_seq CvOUTSIDE_SEQ(bstate->bs_sv) U32
+xcv_flags CvFLAGS(bstate->bs_sv) U16
+av_extend bstate->bs_sv SSize_t x
+av_pushx bstate->bs_sv svindex x
+av_push bstate->bs_sv svindex x
+xav_fill AvFILLp(bstate->bs_sv) SSize_t
+xav_max AvMAX(bstate->bs_sv) SSize_t
+xhv_riter HvRITER(bstate->bs_sv) I32
+xhv_name bstate->bs_sv pvindex x
+hv_store bstate->bs_sv svindex x
+sv_magic bstate->bs_sv char x
+mg_obj SvMAGIC(bstate->bs_sv)->mg_obj svindex
+mg_private SvMAGIC(bstate->bs_sv)->mg_private U16
+mg_flags SvMAGIC(bstate->bs_sv)->mg_flags U8
+mg_name SvMAGIC(bstate->bs_sv) pvcontents x
+mg_namex SvMAGIC(bstate->bs_sv) svindex x
+xmg_stash bstate->bs_sv svindex x
+gv_fetchpv bstate->bs_sv strconst x
+gv_fetchpvx bstate->bs_sv strconst x
+gv_stashpv bstate->bs_sv strconst x
+gv_stashpvx bstate->bs_sv strconst x
+gp_sv GvSV(bstate->bs_sv) svindex
+gp_refcnt GvREFCNT(bstate->bs_sv) U32
+gp_refcnt_add GvREFCNT(bstate->bs_sv) I32 x
+gp_av *(SV**)&GvAV(bstate->bs_sv) svindex
+gp_hv *(SV**)&GvHV(bstate->bs_sv) svindex
+gp_cv *(SV**)&GvCV(bstate->bs_sv) svindex
+gp_file bstate->bs_sv pvindex x
+gp_io *(SV**)&GvIOp(bstate->bs_sv) svindex
+gp_form *(SV**)&GvFORM(bstate->bs_sv) svindex
+gp_cvgen GvCVGEN(bstate->bs_sv) U32
+gp_line GvLINE(bstate->bs_sv) line_t
+gp_share bstate->bs_sv svindex x
+xgv_flags GvFLAGS(bstate->bs_sv) U8
op_next PL_op->op_next opindex
op_sibling PL_op->op_sibling opindex
op_ppaddr PL_op->op_ppaddr strconst x
op_targ PL_op->op_targ PADOFFSET
op_type PL_op OPCODE x
-op_seq PL_op->op_seq U16
+op_opt PL_op->op_opt U8
+op_static PL_op->op_static U8
op_flags PL_op->op_flags U8
op_private PL_op->op_private U8
op_first cUNOP->op_first opindex
op_last cBINOP->op_last opindex
op_other cLOGOP->op_other opindex
-op_children cLISTOP->op_children U32
op_pmreplroot cPMOP->op_pmreplroot opindex
-op_pmreplrootgv *(SV**)&cPMOP->op_pmreplroot svindex
op_pmreplstart cPMOP->op_pmreplstart opindex
op_pmnext *(OP**)&cPMOP->op_pmnext opindex
+#ifdef USE_ITHREADS
+op_pmstashpv cPMOP pvindex x
+op_pmreplrootpo cPMOP->op_pmreplroot OP*/PADOFFSET
+#else
+op_pmstash *(SV**)&cPMOP->op_pmstash svindex
+op_pmreplrootgv *(SV**)&cPMOP->op_pmreplroot svindex
+#endif
pregcomp PL_op pvcontents x
op_pmflags cPMOP->op_pmflags U16
-op_pmpermflags cPMOP->op_pmpermflags U16
op_sv cSVOP->op_sv svindex
op_padix cPADOP->op_padix PADOFFSET
op_pv cPVOP->op_pv pvcontents
op_redoop cLOOP->op_redoop opindex
op_nextop cLOOP->op_nextop opindex
op_lastop cLOOP->op_lastop opindex
-cop_label cCOP->cop_label pvcontents
-cop_stashpv cCOP pvcontents x
-cop_file cCOP pvcontents x
+cop_label cCOP->cop_label pvindex
+#ifdef USE_ITHREADS
+cop_stashpv cCOP pvindex x
+cop_file cCOP pvindex x
+#else
+cop_stash cCOP svindex x
+cop_filegv cCOP svindex x
+#endif
cop_seq cCOP->cop_seq U32
-cop_arybase cCOP->cop_arybase I32
-cop_line cCOP line_t x
-cop_warnings cCOP->cop_warnings svindex
+cop_arybase cCOP I32 x
+cop_line cCOP->cop_line line_t
+cop_warnings cCOP svindex x
main_start PL_main_start opindex
main_root PL_main_root opindex
+main_cv *(SV**)&PL_main_cv svindex
curpad PL_curpad svindex x
+push_begin PL_beginav svindex x
+push_init PL_initav svindex x
+push_end PL_endav svindex x
+curstash *(SV**)&PL_curstash svindex
+defstash *(SV**)&PL_defstash svindex
+data none U8 x
+incav *(SV**)&GvAV(PL_incgv) svindex
+load_glob none svindex x
+#ifdef USE_ITHREADS
+regex_padav *(SV**)&PL_regex_padav svindex
+#endif
+dowarn PL_dowarn U8
+comppad_name *(SV**)&PL_comppad_name svindex
+xgv_stash *(SV**)&GvSTASH(bstate->bs_sv) svindex
+signal bstate->bs_sv strconst x
+# to be removed
+formfeed PL_formfeed svindex
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