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bytecode.pl
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bytecode.pl
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# -*- cperl-indent-level:4 -*-
BEGIN {
push @INC, '.', 'lib';
require 'regen_lib.pl';
}
use strict;
use Config;
my %alias_to = (
U32 => [qw(line_t)],
PADOFFSET => [qw(STRLEN SSize_t)],
U16 => [qw(OPCODE short)],
U8 => [qw(char)],
);
%alias_to = (
U32 => [qw(PADOFFSET STRLEN)],
I32 => [qw(SSize_t long)],
U16 => [qw(OPCODE line_t short)],
U8 => [qw(char)],
) if $] < 5.008001;
my (%alias_from, $from, $tos);
while (($from, $tos) = each %alias_to) {
map { $alias_from{$_} = $from } @$tos;
}
my (@optype, @specialsv_name);
require B;
# @optype was in B::Asmdata, and is since 5.10 in B
if ($] < 5.009) {
require B::Asmdata;
@optype = @{*B::Asmdata::optype{ARRAY}};
@specialsv_name = @{*B::Asmdata::specialsv_name{ARRAY}};
# B::Asmdata->import qw(@optype @specialsv_name);
} else {
@optype = @{*B::optype{ARRAY}};
@specialsv_name = @{*B::specialsv_name{ARRAY}};
# B->import qw(@optype @specialsv_name);
}
my $perlversion = sprintf("%1.6f%s", $], ($Config{useithreads} ? '' : '-nt'));
my $c_header = <<"EOT";
/* -*- buffer-read-only: t -*-
*
* Copyright (c) 1996-1999 Malcolm Beattie
* Copyright (c) 2008,2009,2010,2011,2012 Reini Urban
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
*/
/*
* This file is autogenerated from bytecode.pl. Changes made here will be lost.
* It is specific for Perl $perlversion only.
*/
EOT
my $perl_header;
($perl_header = $c_header) =~ s{[/ ]?\*/?}{#}g;
my @targets = ("lib/B/Asmdata.pm", "ByteLoader/byterun.c", "ByteLoader/byterun.h");
safer_unlink @targets;
#
# Start with boilerplate for Asmdata.pm
#
open(ASMDATA_PM, "> $targets[0]") or die "$targets[0]: $!";
binmode ASMDATA_PM;
print ASMDATA_PM $perl_header, <<'EOT';
package B::Asmdata;
our $VERSION = '1.03';
use Exporter;
@ISA = qw(Exporter);
@EXPORT_OK = qw(%insn_data @insn_name @optype @specialsv_name);
EOT
if ($] > 5.009) {
print ASMDATA_PM 'our(%insn_data, @insn_name);
use B qw(@optype @specialsv_name);
';
} elsif ($] > 5.008) {
print ASMDATA_PM 'our(%insn_data, @insn_name, @optype, @specialsv_name);
@optype = qw(OP UNOP BINOP LOGOP LISTOP PMOP SVOP PADOP PVOP LOOP COP);
@specialsv_name = qw(Nullsv &PL_sv_undef &PL_sv_yes &PL_sv_no pWARN_ALL pWARN_NONE);
';
} else {
print ASMDATA_PM 'my(%insn_data, @insn_name, @optype, @specialsv_name);
@optype = qw(OP UNOP BINOP LOGOP LISTOP PMOP SVOP PADOP PVOP LOOP COP);
@specialsv_name = qw(Nullsv &PL_sv_undef &PL_sv_yes &PL_sv_no pWARN_ALL pWARN_NONE);
';
}
print ASMDATA_PM <<"EOT";
# 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, "> $targets[1]") or die "$targets[1]: $!";
binmode 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"
#if PERL_VERSION < 8
#define NEED_sv_2pv_flags
#include "ppport.h"
#endif
/* Change 31252: move PL_tokenbuf into the PL_parser struct */
#if (PERL_VERSION > 8) && (!defined(PL_tokenbuf))
#define PL_tokenbuf (PL_parser->tokenbuf)
#endif
#if (PERL_VERSION < 8) && (!defined(DEBUG_v))
#define DEBUG_v(a) DEBUG_f(a)
#endif
#include "byterun.h"
#include "bytecode.h"
struct byteloader_header bl_header;
static const 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';
};
void *
bset_obj_store(pTHX_ struct byteloader_state *bstate, void *obj, I32 ix)
{
if (ix > bstate->bs_obj_list_fill) {
Renew(bstate->bs_obj_list, ix + 32, void*);
bstate->bs_obj_list_fill = ix + 31;
}
bstate->bs_obj_list[ix] = obj;
return obj;
}
int bytecode_header_check(pTHX_ struct byteloader_state *bstate, U32 *isjit) {
U32 sz = 0;
strconst str;
BGET_U32(sz); /* Magic: 'PLBC' or 'PLJC' */
if (sz != 0x43424c50) {
if (sz != 0x434a4c50) {
HEADER_FAIL1("bad magic (want 0x43424c50 PLBC or 0x434a4c50 PLJC, got %#x)",
(int)sz);
} else {
*isjit = 1;
}
}
BGET_strconst(str,80); /* archname */
strcpy(bl_header.archname, str);
/* just warn. relaxed strictness, only check for ithread in archflag */
if (strNE(str, ARCHNAME)) {
HEADER_WARN2("Different architecture %s, you have %s", str, ARCHNAME);
}
/* ByteLoader version strategy: Strict for 0.06_ development releases and 0.03-0.04.
0.07 should be able to load 0.5 (5.8.1 CORE) */
BGET_strconst(str,16);
strcpy(bl_header.version, str);
if (strNE(str, VERSION)) {
if ((strGT(str, "0.06") && strLT(str, "0.06_06")) /*|| strLT(str, "0.05")*/) {
HEADER_FAIL2("Incompatible bytecode version %s, you have %s",
str, VERSION);
}
}
BGET_U32(sz); /* ivsize */
bl_header.ivsize = sz;
BGET_U32(sz); /* ptrsize */
bl_header.ptrsize = sz;
/* new since 0.06_03 */
if (strGE(bl_header.version, "0.06_03")) {
BGET_U32(sz); /* longsize */
bl_header.longsize = sz;
} else {
bl_header.longsize = LONGSIZE;
}
if (strGT(bl_header.version, "0.06") || strEQ(bl_header.version, "0.04"))
{ /* added again with 0.06_01 */
/* config.h BYTEORDER: 0x1234 of length longsize, not ivsize */
char supported[16];
/* Note: perl's $Config{byteorder} is wrong with 64int.
Bug in Config.pm:921 my $s = $Config{ivsize}; => my $s = $Config{longsize};
*/
sprintf(supported, "%x", BYTEORDER);
BGET_strconst(str, 16); /* optional 0x prefix, 12345678 or 1234 */
if (str[0] == 0x30 && str[1] == 0x78) { /* skip '0x' */
str++; str++;
}
strcpy(bl_header.byteorder, str);
if (strNE(str, supported)) {
/* swab only if same length. 1234 => 4321, 12345678 => 87654321 */
if (strlen(str) == strlen(supported)) {
bget_swab = 1;
HEADER_WARN2("EXPERIMENTAL byteorder conversion: .plc=%s, perl=%s",
str, supported);
} else {
HEADER_FAIL2("Unsupported byteorder conversion: .plc=%s, perl=%s",
str, supported);
}
}
}
/* swab byteorder */
if (bget_swab) {
bl_header.ivsize = _swab_32_(bl_header.ivsize);
bl_header.ptrsize = _swab_32_(bl_header.ptrsize);
if (bl_header.longsize != LONGSIZE) {
bl_header.longsize = _swab_32_(bl_header.longsize);
}
}
#ifdef USE_ITHREADS
# define HAVE_ITHREADS_I 1
#else
# define HAVE_ITHREADS_I 0
#endif
#ifdef MULTIPLICITY
# define HAVE_MULTIPLICITY_I 2
#else
# define HAVE_MULTIPLICITY_I 0
#endif
if (strGE(bl_header.version, "0.06_05")) {
BGET_U16(sz); /* archflag */
bl_header.archflag = sz;
if ((sz & 1) != HAVE_ITHREADS_I) {
HEADER_FAIL2("Wrong USE_ITHREADS. Bytecode: %s, System: %s)",
bl_header.archflag & 1 ? "yes" : "no",
HAVE_ITHREADS_I ? "yes" : "no");
}
if (strGE(bl_header.version, "0.08")) {
if ((sz & 2) != HAVE_MULTIPLICITY_I) {
HEADER_FAIL2("Wrong MULTIPLICITY. Bytecode: %s, System: %s)",
bl_header.archflag & 2 ? "yes" : "no",
HAVE_MULTIPLICITY_I ? "yes" : "no");
}
}
}
if (bl_header.ivsize != IVSIZE) {
HEADER_WARN("different IVSIZE");
if ((bl_header.ivsize != 4) && (bl_header.ivsize != 8))
HEADER_FAIL1("unsupported IVSIZE %d", bl_header.ivsize);
}
if (bl_header.ptrsize != PTRSIZE) {
HEADER_WARN("different PTRSIZE");
if ((bl_header.ptrsize != 4) && (bl_header.ptrsize != 8))
HEADER_FAIL1("unsupported PTRSIZE %d", bl_header.ptrsize);
}
if (strGE(bl_header.version, "0.06_03")) {
if (bl_header.longsize != LONGSIZE) {
HEADER_WARN("different LONGSIZE");
if ((bl_header.longsize != 4) && (bl_header.longsize != 8))
HEADER_FAIL1("unsupported LONGSIZE %d", bl_header.longsize);
}
}
if (strGE(bl_header.version, "0.06_06")) {
BGET_strconst(str, 16);
strcpy(bl_header.perlversion, str);
} else {
*bl_header.perlversion = 0;
}
return 1;
}
int
byterun(pTHX_ struct byteloader_state *bstate)
{
register int insn;
U32 isjit = 0;
U32 ix;
EOT
printf BYTERUN_C " SV *specialsv_list[%d];\n", scalar @specialsv_name;
print BYTERUN_C <<'EOT';
bytecode_header_check(aTHX_ bstate, &isjit); /* croak if incorrect platform,
set isjit on PLJC magic header */
if (isjit) {
Perl_croak(aTHX_ "PLJC-magic: No JIT support yet\n");
return 0; /*jitrun(aTHX_ &bstate);*/
} else {
New(0, bstate->bs_obj_list, 32, void*); /* set op objlist */
bstate->bs_obj_list_fill = 31;
bstate->bs_obj_list[0] = NULL; /* first is always Null */
bstate->bs_ix = 1;
CopLINE(PL_curcop) = bstate->bs_fdata->next_out;
DEBUG_l( Perl_deb(aTHX_ "(bstate.bs_fdata.idx %d)\n", bstate->bs_fdata->idx));
DEBUG_l( Perl_deb(aTHX_ "(bstate.bs_fdata.next_out %d)\n", bstate->bs_fdata->next_out));
DEBUG_l( Perl_deb(aTHX_ "(bstate.bs_fdata.datasv %p:\"%s\")\n", bstate->bs_fdata->datasv,
SvPV_nolen(bstate->bs_fdata->datasv)));
EOT
for my $i ( 0 .. $#specialsv_name ) {
print BYTERUN_C " specialsv_list[$i] = $specialsv_name[$i];\n";
}
print BYTERUN_C <<'EOT';
while ((insn = BGET_FGETC()) != EOF) {
CopLINE(PL_curcop) = bstate->bs_fdata->next_out;
switch (insn) {
EOT
my ($idx, @insn_name, $insn_num, $ver, $insn, $lvalue, $argtype, $flags, $fundtype, $unsupp);
my $ITHREADS = $Config{useithreads} eq 'define';
my $MULTI = $Config{useithreads} eq 'define';
$insn_num = 0;
my @data = <DATA>;
my @insndata = ();
for (@data) {
if (/^\s*#/) {
print BYTERUN_C if /^\s*#\s*(?:if|endif|el)/;
next;
}
chop;
next unless length;
($idx, $ver, $insn, $lvalue, $argtype, $flags) = split;
# bc numbering policy: <=5.6: leave out (squeeze), >=5.8 leave holes
if ($] > 5.007) {
$insn_num = $idx ? $idx : $insn_num;
$insn_num = 0 if !$idx and $insn eq 'ret';
} else { # ignore the idx and count through. just fixup comment and nop
$insn_num = 35 if $insn eq "comment";
$insn_num = 10 if $insn eq "nop";
$insn_num = 0 if $insn eq "ret"; # start from 0
}
my $rvalcast = '';
$unsupp = 0;
if ($argtype =~ m:(.+)/(.+):) {
($rvalcast, $argtype) = ("($1)", $2);
}
if ($ver) {
if ($ver =~ /^\!?i/) {
$unsupp++ if ($ver =~ /^i/ and !$ITHREADS) or ($ver =~ /\!i/ and $ITHREADS);
$ver =~ s/^\!?i//;
}
if ($ver =~ /^\!?m/) {
$unsupp++ if ($ver =~ /^m/ and !$MULTI) or ($ver =~ /\!m/ and $MULTI);
$ver =~ s/^\!?m//;
}
# perl version 5.010000 => 10.000, 5.009003 => 9.003
# Have to round the float: 5.010 - 5 = 0.00999999999999979
my $pver = 0.0+(substr($],2,3).".".substr($],5));
if ($ver =~ /8(\-)?/) {
$ver =~ s/8/8.001/; # as convenience for a shorter table.
}
# Add these misses to ASMDATA. TODO: To BYTERUN maybe with a translator, as the
# perl fields to write to are gone. Reading for the disassembler should be possible.
if ($ver =~ /^\>[\d\.]+$/) {
$unsupp++ if $pver < substr($ver,1);# ver >10: skip if pvar lowereq 10
} elsif ($ver =~ /^\<[\d\.]+$/) {
$unsupp++ if $pver >= substr($ver,1); # ver <10: skip if pvar higher than 10;
} elsif ($ver =~ /^([\d\.]+)-([\d\.]+)$/) {
$unsupp++ if $pver >= $2 or $pver < $1; # ver 8-10 (both inclusive): skip if pvar
# lower than 8 or higher than 10;
} elsif ($ver =~ /^[\d\.]*$/) {
$unsupp++ if $pver < $ver; # ver 10: skip if pvar lower than 10;
}
}
if (!$unsupp or ($] >= 5.007 and $insn !~ /padl/)) {
$insn_name[$insn_num] = $insn;
push @insndata, [$insn_num, $unsupp, $insn, $lvalue, $rvalcast, $argtype, $flags];
# Find the next unused instruction number
do { $insn_num++ } while $insn_name[$insn_num];
}
}
# calculate holes and insn_nums (number of instructions per bytecode)
my %holes = ();
my $insn_max = $insndata[$#insndata]->[0];
# %holes = (46=>1,66=>1,68=>1,107=>1,108=>1,115=>1,126=>1,127=>1,129=>1,131=>1) if $] > 5.007;
my %insn_nums;
if ($] > 5.007) {
my %unsupps;
for (@insndata) { $insn_nums{$_->[0]}++; } # all
for (@insndata) { $holes{$_->[0]}++ if $_->[1] and $insn_nums{$_->[0]} == 1; }
}
my $UVxf = substr($Config{uvxformat},1,-1);
for (@insndata) {
my ($unsupp, $rvalcast);
($insn_num, $unsupp, $insn, $lvalue, $rvalcast, $argtype, $flags) = @$_;
$fundtype = $alias_from{$argtype} || $argtype;
#
# Add the initialiser line for %insn_data in Asmdata.pm
#
if ($unsupp) {
print ASMDATA_PM <<"EOT" if $insn_nums{$insn_num} == 1; # singletons only
\$insn_data{$insn} = [$insn_num, 0, "GET_$fundtype"];
EOT
} else {
print ASMDATA_PM <<"EOT";
\$insn_data{$insn} = [$insn_num, \\&PUT_$fundtype, "GET_$fundtype"];
EOT
}
#
# Add the case statement and code for the bytecode interpreter in byterun.c
#
# On unsupported codes add to BYTERUN CASE only for certain nums: holes.
if (!$unsupp or $holes{$insn_num}) {
printf BYTERUN_C "\t case %s:\t\t/* %d */\n\t {\n",
$unsupp ? $insn_num : "INSN_".uc($insn), $insn_num;
} else {
next;
}
my $optarg = $argtype eq "none" ? "" : ", arg";
my ($argfmt, $rvaldcast, $printarg);
if ($fundtype =~ /(strconst|pvcontents|op_tr_array)/) {
$argfmt = '\"%s\"';
$rvaldcast = '(char*)';
$printarg = "${rvaldcast}arg";
} elsif ($argtype =~ /index$/) {
$argfmt = '0x%'.$UVxf.', ix:%d';
$rvaldcast = "($argtype)";
$printarg = "PTR2UV(arg)";
} else {
$argfmt = '%d';
$rvaldcast = '(int)';
$printarg = "${rvaldcast}arg";
}
if ($optarg) {
print BYTERUN_C "\t\t$argtype arg;\n";
if ($rvalcast) {
$argtype = $rvalcast . $argtype;
}
if ($unsupp and $holes{$insn_num}) {
printf BYTERUN_C "\t\tPerlIO_printf(Perl_error_log, \"Unsupported bytecode instruction %%d (%s) at stream offset %%d.\\n\",
insn, bstate->bs_fdata->next_out);\n", uc($insn);
}
print BYTERUN_C "\t\tif (force)\n\t" if $unsupp;
if ($fundtype eq 'strconst') {
my $maxsize = ($flags =~ /(\d+$)/) ? $1 : 0;
printf BYTERUN_C "\t\tBGET_%s(arg, %d);\n", $fundtype, $maxsize;
} else {
printf BYTERUN_C "\t\tBGET_%s(arg);\n", $fundtype;
}
printf BYTERUN_C "\t\tDEBUG_v(Perl_deb(aTHX_ \"(insn %%3d) $insn $argtype:%s\\n\",\n\t\t\t\tinsn, $printarg%s));\n",
$argfmt, ($argtype =~ /index$/ ? ', (int)ix' : '');
if ($insn eq 'newopx' or $insn eq 'newop') {
print BYTERUN_C "\t\tDEBUG_v(Perl_deb(aTHX_ \"\t [%s %d]\\n\", PL_op_name[arg>>7], bstate->bs_ix));\n";
}
if ($fundtype eq 'PV') {
print BYTERUN_C "\t\tDEBUG_v(Perl_deb(aTHX_ \"\t BGET_PV(arg) => \\\"%s\\\"\\n\", bstate->bs_pv.pv));\n";
}
} else {
if ($unsupp and $holes{$insn_num}) {
printf BYTERUN_C "\t\tPerlIO_printf(Perl_error_log, \"Unsupported bytecode instruction %%d (%s) at stream offset %%d.\\n\",
insn, bstate->bs_fdata->next_out);\n", uc($insn);
}
print BYTERUN_C "\t\tDEBUG_v(Perl_deb(aTHX_ \"(insn %3d) $insn\\n\", insn));\n";
}
if ($flags =~ /x/) {
# Special setter method named after insn
print BYTERUN_C "\t\tif (force)\n\t" if $unsupp;
print BYTERUN_C "\t\tBSET_$insn($lvalue$optarg);\n";
my $optargcast = $optarg eq ", arg" ? ",\n\t\t\t\t$printarg" : '';
$optargcast .= ($insn =~ /x$/ and $optarg eq ", arg" ? ", bstate->bs_ix-1" : '');
printf BYTERUN_C "\t\tDEBUG_v(Perl_deb(aTHX_ \"\t BSET_$insn($lvalue%s)\\n\"$optargcast));\n",
$optarg eq ", arg"
? ($fundtype =~ /(strconst|pvcontents)/
? ($insn =~ /x$/ ? ', \"%s\" ix:%d' : ', \"%s\"')
: (", " .($argtype =~ /index$/ ? '0x%'.$UVxf : $argfmt)
.($insn =~ /x$/ ? ' ix:%d' : ''))
)
: '';
} elsif ($flags =~ /s/) {
# Store instructions to bytecode_obj_list[arg]. "lvalue" field is rvalue.
print BYTERUN_C "\t\tif (force)\n\t" if $unsupp;
print BYTERUN_C "\t\tBSET_OBJ_STORE($lvalue$optarg);\n";
print BYTERUN_C "\t\tDEBUG_v(Perl_deb(aTHX_ \"\t BSET_OBJ_STORE($lvalue$optarg)\\n\"));\n";
}
elsif ($optarg && $lvalue ne "none") {
print BYTERUN_C "\t\t$lvalue = ${rvalcast}arg;\n" unless $unsupp;
printf BYTERUN_C "\t\tDEBUG_v(Perl_deb(aTHX_ \"\t $lvalue = ${rvalcast}%s;\\n\", $printarg%s));\n",
$fundtype =~ /(strconst|pvcontents)/ ? '\"%s\"' : ($argtype =~ /index$/ ? '0x%'.$UVxf : $argfmt);
}
print BYTERUN_C "\t\tbreak;\n\t }\n";
}
#
# Finish off byterun.c
#
print BYTERUN_C <<'EOT';
default:
Perl_croak(aTHX_ "Illegal bytecode instruction %d at stream offset %d.\n",
insn, bstate->bs_fdata->next_out);
/* NOTREACHED */
}
/* debop is not public in 5.10.0 on strict platforms like mingw and MSVC, cygwin is fine. */
#if defined(DEBUG_t_TEST_) && !defined(_MSC_VER) && !defined(__MINGW32__) && !defined(AIX)
if (PL_op && DEBUG_t_TEST_)
/* XXX GV without flags will assert. We need to skip newopx ops until op_flags are set */
if ((insn != INSN_NEWOPX) && (insn != INSN_NEWOP)) debop(PL_op);
#endif
}
}
return 0;
}
/* ex: set ro: */
EOT
#
# Write the instruction and optype enum constants into byterun.h
#
open(BYTERUN_H, "> $targets[2]") or die "$targets[2]: $!";
binmode BYTERUN_H;
print BYTERUN_H $c_header, <<'EOT';
#if PERL_VERSION < 10
# define PL_RSFP PL_rsfp
#else
# define PL_RSFP PL_parser->rsfp
#endif
#if (PERL_VERSION <= 8) && (PERL_SUBVERSION < 8)
# define NEED_sv_2pv_flags
# include "ppport.h"
#endif
/* macros for correct constant construction */
# if INTSIZE >= 2
# define U16_CONST(x) ((U16)x##U)
# else
# define U16_CONST(x) ((U16)x##UL)
# endif
# if INTSIZE >= 4
# define U32_CONST(x) ((U32)x##U)
# else
# define U32_CONST(x) ((U32)x##UL)
# endif
# ifdef HAS_QUAD
typedef I64TYPE I64;
typedef U64TYPE U64;
# if INTSIZE >= 8
# define U64_CONST(x) ((U64)x##U)
# elif LONGSIZE >= 8
# define U64_CONST(x) ((U64)x##UL)
# elif QUADKIND == QUAD_IS_LONG_LONG
# define U64_CONST(x) ((U64)x##ULL)
# else /* best guess we can make */
# define U64_CONST(x) ((U64)x##UL)
# endif
# endif
/* byte-swapping functions for big-/little-endian conversion */
# define _swab_16_(x) ((U16)( \
(((U16)(x) & U16_CONST(0x00ff)) << 8) | \
(((U16)(x) & U16_CONST(0xff00)) >> 8) ))
# define _swab_32_(x) ((U32)( \
(((U32)(x) & U32_CONST(0x000000ff)) << 24) | \
(((U32)(x) & U32_CONST(0x0000ff00)) << 8) | \
(((U32)(x) & U32_CONST(0x00ff0000)) >> 8) | \
(((U32)(x) & U32_CONST(0xff000000)) >> 24) ))
# ifdef HAS_QUAD
# define _swab_64_(x) ((U64)( \
(((U64)(x) & U64_CONST(0x00000000000000ff)) << 56) | \
(((U64)(x) & U64_CONST(0x000000000000ff00)) << 40) | \
(((U64)(x) & U64_CONST(0x0000000000ff0000)) << 24) | \
(((U64)(x) & U64_CONST(0x00000000ff000000)) << 8) | \
(((U64)(x) & U64_CONST(0x000000ff00000000)) >> 8) | \
(((U64)(x) & U64_CONST(0x0000ff0000000000)) >> 24) | \
(((U64)(x) & U64_CONST(0x00ff000000000000)) >> 40) | \
(((U64)(x) & U64_CONST(0xff00000000000000)) >> 56) ))
# else
# define _swab_64_(x) _swab_32_((U32)(x) & U32_CONST(0xffffffff))
# endif
# define _swab_iv_(x,size) ((size==4) ? _swab_32_(x) : ((size==8) ? _swab_64_(x) : _swab_16_(x)))
struct byteloader_fdata {
SV *datasv;
int next_out;
int idx;
};
struct byteloader_xpv {
char *pv;
int cur;
int len;
};
struct byteloader_header {
char archname[80];
char version[16];
int ivsize;
int ptrsize;
int longsize;
char byteorder[16];
int archflag;
char perlversion[16];
};
struct byteloader_state {
struct byteloader_fdata *bs_fdata;
SV *bs_sv;
void **bs_obj_list;
int bs_obj_list_fill;
int bs_ix;
struct byteloader_xpv bs_pv;
int bs_iv_overflows;
};
int bl_getc(struct byteloader_fdata *);
int bl_read(struct byteloader_fdata *, char *, size_t, size_t);
extern int byterun(pTHX_ register struct byteloader_state *);
enum {
EOT
my $add_enum_value = 0;
my $max_insn;
enum:
for (sort {$a->[0] <=> $b->[0] } @insndata) {
($i, $unsupp, $insn) = @$_;
#
# Add ENUMS to the header
#
if (!$unsupp) {
$insn = uc($insn);
$max_insn = $i;
if ($add_enum_value) {
my $tabs = "\t" x (4-((9+length($insn)))/8);
printf BYTERUN_H " INSN_$insn = %3d,$tabs/* $i */\n", $i;
$add_enum_value = 0;
} else {
my $tabs = "\t" x (4-((3+length($insn))/8));
print BYTERUN_H " INSN_$insn,$tabs/* $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], $i;
print BYTERUN_H "/* ex: set ro: */\n";
#
# Finish off insn_data and create array initialisers in Asmdata.pm
#
print ASMDATA_PM <<'EOT';
my ($insn_name, $insn_data);
while (($insn_name, $insn_data) = each %insn_data) {
$insn_name[$insn_data->[0]] = $insn_name;
}
# Fill in any gaps
@insn_name = map($_ || "unused", @insn_name);
1;
__END__
=head1 NAME
B::Asmdata - Autogenerated data about Perl ops, used to generate bytecode
=head1 SYNOPSIS
use B::Asmdata qw(%insn_data @insn_name @optype @specialsv_name);
=head1 DESCRIPTION
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' the op argument to the bytecode stream,
and the name of the method used to 'GET' op argument from the bytecode stream.
Most ops require one arg, in fact all ops without the PUT/GET_none methods,
and the GET and PUT methods are used to en-/decode the arg to binary bytecode.
The names are constructed from the GET/PUT prefix and the argument type,
such as U8, U16, U32, svindex, opindex, pvindex, ...
The PUT method is used in the L<B::Bytecode> compiler within L<B::Assembler>,
the GET method just for the L<B::Disassembler>.
The GET method is not used by the binary L<ByteLoader> module.
A full C<insn> table with version, opcode, name, lvalue, argtype and flags
is located as DATA in F<bytecode.pl>.
An empty PUT method, the number 0, denotes an unsupported bytecode for this perl.
It is there to support disassembling older perl bytecode. This was added with 1.02_02.
=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').
Since Perl version 5.10 defined in L<B>.
=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').
Since Perl version 5.10 defined in L<B>.
=back
=head1 PORTABILITY
All bytecode values are already portable.
Cross-platform portability is implemented, cross-version not yet.
Cross-version portability will be very limited, cross-platform only
for the same threading model.
=head2 CROSS-PLATFORM PORTABILITY
For different endian-ness there are ByteLoader converters in effect.
Header entry: byteorder.
64int - 64all - 32int is portable. Header entry: ivsize
ITHREADS are unportable; header entry: archflag - bitflag 1.
MULTIPLICITY is also unportable; header entry: archflag - bitflag 2
TODO For cross-version portability we will try to translate older
bytecode ops to the current perl op via L<ByteLoader::Translate>.
Asmdata already contains the old ops, all with the PUT method 0.
Header entry: perlversion
=head2 CROSS-VERSION PORTABILITY (TODO - HARD)
Bytecode ops:
We can only reliably load bytecode from previous versions and promise
that from 5.10.0 on future versions will only add new op numbers at
the end, but will never replace old opcodes with incompatible arguments.
Unsupported insn's are supported by disassemble, and if C<force> in the
ByteLoader is set, it is tried to load/set them also, with probably fatal
consequences.
On the first unknown bytecode op from a future version - added to the end
- we will die.
L<ByteLoader::BcVersions> contains logic to translate previous errors
from this bytecode policy. E.g. 5.8 violated the 5.6 bytecode order policy
and began to juggle it around (similar to parrot), in detail removed
various bytecodes, like ldspecsvx:7, xpv_cur, xpv_len, xiv64:26.
So in theory it would have been possible to load 5.6 into 5.8 bytecode
as the underlying perl pp_code ops didn't change that much, but it is risky.
We have unused tables of all bytecode ops for all version-specific changes
to the bytecode table. This only changed with
the ByteLoader version, ithreads and major Perl versions.
Also special replacements in the byteloader for all the unsupported
ops, like xiv64, cop_arybase.
=head1 AUTHOR
Malcolm Beattie C<MICB at cpan.org> I<(retired)>,
Reini Urban added the version logic, support >= 5.10, portability.
=cut
# ex: set ro:
EOT
close ASMDATA_PM or die "Error closing $targets[0]: $!";
close BYTERUN_C or die "Error closing $targets[1]: $!";
close BYTERUN_H or die "Error closing $targets[2]: $!";
chmod 0444, @targets;
# TODO 5.10:
# stpv (?)
# pv_free: free the bs_pv and the SvPVX? (?)
__END__
# First set instruction ord("#") to read comment to end-of-line (sneaky)
35 0 comment arg comment_t
# Then make ord("\n") into a no-op
10 0 nop none none
# Now for the rest of the ordinary ones, beginning with \0 which is
# ret so that \0-terminated strings can be read properly as bytecode.
#
# The argtype is either a single type or "rightvaluecast/argtype".
# The version is either "i" or "!i" for ITHREADS or not,
# "m" or "!m" for MULTI or not,
# or num, num-num, >num or <num.
# "0" is for all, "<10" requires PERL_VERSION<10, "10" requires
# PERL_VERSION>=10, ">10" requires PERL_VERSION>10, "10-10"
# requires PERL_VERSION>==10 only.
# lvalue is the (statemachine) value to read or write.
# argtype specifies the reader or writer method.
# flags x specifies a special writer method BSET_$insn in bytecode.h
# flags s store instructions to bytecode_obj_list[arg]. "lvalue" field is rvalue.
# flags \d+ specifies the maximal length.
#
# bc numbering policy: <=5.6: leave out, >=5.8 leave holes
# Note: ver 8 is really 8.001. 5.008000 had the same bytecodes as 5.006002.
#idx version opcode lvalue argtype flags
#
0 0 ret none none x
1 0 ldsv bstate->bs_sv svindex
2 0 ldop PL_op opindex
3 0 stsv bstate->bs_sv U32 s
4 0 stop PL_op U32 s
5 6.001 stpv bstate->bs_pv.pv U32 x
6 0 ldspecsv bstate->bs_sv U8 x
7 8 ldspecsvx bstate->bs_sv U8 x
8 0 newsv bstate->bs_sv U8 x
9 8 newsvx bstate->bs_sv U32 x
#10 0 nop none none
11 0 newop PL_op U8 x
12 8 newopx PL_op U16 x
13 0 newopn PL_op U8 x
14 0 newpv none U32/PV
15 0 pv_cur bstate->bs_pv.cur STRLEN
16 0 pv_free bstate->bs_pv none x
17 0 sv_upgrade bstate->bs_sv U8 x
18 0 sv_refcnt SvREFCNT(bstate->bs_sv) U32
19 0 sv_refcnt_add SvREFCNT(bstate->bs_sv) I32 x
20 0 sv_flags SvFLAGS(bstate->bs_sv) U32
21 0 xrv bstate->bs_sv svindex x
22 0 xpv bstate->bs_sv none x
23 8 xpv_cur bstate->bs_sv STRLEN x
24 8 xpv_len bstate->bs_sv STRLEN x
25 8 xiv bstate->bs_sv IV x
25 <8 xiv32 SvIVX(bstate->bs_sv) I32
0 <8 xiv64 SvIVX(bstate->bs_sv) IV64
26 0 xnv bstate->bs_sv NV x
27 0 xlv_targoff LvTARGOFF(bstate->bs_sv) STRLEN
28 0 xlv_targlen LvTARGLEN(bstate->bs_sv) STRLEN
29 0 xlv_targ LvTARG(bstate->bs_sv) svindex
30 0 xlv_type LvTYPE(bstate->bs_sv) char
31 0 xbm_useful BmUSEFUL(bstate->bs_sv) I32
32 0 xbm_previous BmPREVIOUS(bstate->bs_sv) U16
33 0 xbm_rare BmRARE(bstate->bs_sv) U8
34 0 xfm_lines FmLINES(bstate->bs_sv) IV
#35 0 comment arg comment_t
36 0 xio_lines IoLINES(bstate->bs_sv) IV
37 0 xio_page IoPAGE(bstate->bs_sv) IV
38 0 xio_page_len IoPAGE_LEN(bstate->bs_sv) IV
39 0 xio_lines_left IoLINES_LEFT(bstate->bs_sv) IV
40 0 xio_top_name IoTOP_NAME(bstate->bs_sv) pvindex
41 0 xio_top_gv *(SV**)&IoTOP_GV(bstate->bs_sv) svindex
42 0 xio_fmt_name IoFMT_NAME(bstate->bs_sv) pvindex
43 0 xio_fmt_gv *(SV**)&IoFMT_GV(bstate->bs_sv) svindex
44 0 xio_bottom_name IoBOTTOM_NAME(bstate->bs_sv) pvindex
45 0 xio_bottom_gv *(SV**)&IoBOTTOM_GV(bstate->bs_sv) svindex
46 <10 xio_subprocess IoSUBPROCESS(bstate->bs_sv) short
47 0 xio_type IoTYPE(bstate->bs_sv) char
48 0 xio_flags IoFLAGS(bstate->bs_sv) char
49 8 xcv_xsubany *(SV**)&CvXSUBANY(bstate->bs_sv).any_ptr svindex
50 <13 xcv_stash CvSTASH(bstate->bs_sv) svindex
50 13 xcv_stash bstate->bs_sv svindex x
51 0 xcv_start CvSTART(bstate->bs_sv) opindex
52 0 xcv_root CvROOT(bstate->bs_sv) opindex
53 0 xcv_gv bstate->bs_sv svindex x
# <8 xcv_filegv *(SV**)&CvFILEGV(bstate->bs_sv) svindex
54 0 xcv_file CvFILE(bstate->bs_sv) pvindex
55 0 xcv_depth CvDEPTH(bstate->bs_sv) long
56 0 xcv_padlist *(SV**)&CvPADLIST(bstate->bs_sv) svindex
57 0 xcv_outside *(SV**)&CvOUTSIDE(bstate->bs_sv) svindex
58 8 xcv_outside_seq CvOUTSIDE_SEQ(bstate->bs_sv) U32
59 0 xcv_flags CvFLAGS(bstate->bs_sv) U16
60 0 av_extend bstate->bs_sv SSize_t x
61 8 av_pushx bstate->bs_sv svindex x
62 <8 av_push bstate->bs_sv svindex x
63 <8 xav_fill AvFILLp(bstate->bs_sv) SSize_t
64 <8 xav_max AvMAX(bstate->bs_sv) SSize_t
65 <10 xav_flags AvFLAGS(bstate->bs_sv) U8
65 10-12 xav_flags ((XPVAV*)(SvANY(bstate->bs_sv)))->xiv_u.xivu_i32 I32
66 <10 xhv_riter HvRITER(bstate->bs_sv) I32
67 0 xhv_name bstate->bs_sv pvindex x
68 8-9 xhv_pmroot *(OP**)&HvPMROOT(bstate->bs_sv) opindex
69 0 hv_store bstate->bs_sv svindex x
70 0 sv_magic bstate->bs_sv char x
71 0 mg_obj SvMAGIC(bstate->bs_sv)->mg_obj svindex
72 0 mg_private SvMAGIC(bstate->bs_sv)->mg_private U16
73 0 mg_flags SvMAGIC(bstate->bs_sv)->mg_flags U8
# mg_name <5.8001 called mg_pv
74 0 mg_name SvMAGIC(bstate->bs_sv) pvcontents x
75 8 mg_namex SvMAGIC(bstate->bs_sv) svindex x
76 0 xmg_stash bstate->bs_sv svindex x
77 0 gv_fetchpv bstate->bs_sv strconst 128x
78 8 gv_fetchpvx bstate->bs_sv strconst 128x
79 0 gv_stashpv bstate->bs_sv strconst 128x
80 8 gv_stashpvx bstate->bs_sv strconst 128x
81 0 gp_sv bstate->bs_sv svindex x
82 0 gp_refcnt GvREFCNT(bstate->bs_sv) U32
83 0 gp_refcnt_add GvREFCNT(bstate->bs_sv) I32 x
84 0 gp_av *(SV**)&GvAV(bstate->bs_sv) svindex
85 0 gp_hv *(SV**)&GvHV(bstate->bs_sv) svindex
86 0 gp_cv *(SV**)&GvCV(bstate->bs_sv) svindex x
87 <9 gp_file GvFILE(bstate->bs_sv) pvindex
87 9 gp_file bstate->bs_sv pvindex x
88 0 gp_io *(SV**)&GvIOp(bstate->bs_sv) svindex
89 0 gp_form *(SV**)&GvFORM(bstate->bs_sv) svindex
90 0 gp_cvgen GvCVGEN(bstate->bs_sv) U32
91 0 gp_line GvLINE(bstate->bs_sv) line_t
92 0 gp_share bstate->bs_sv svindex x
93 0 xgv_flags GvFLAGS(bstate->bs_sv) U8
94 0 op_next PL_op->op_next opindex
95 0 op_sibling PL_op->op_sibling opindex
96 0 op_ppaddr PL_op->op_ppaddr strconst 24x
97 0 op_targ PL_op->op_targ PADOFFSET
98 0 op_type PL_op OPCODE x
99 <9 op_seq PL_op->op_seq U16
99 9 op_opt PL_op->op_opt U8
100 0 op_flags PL_op->op_flags U8
101 0 op_private PL_op->op_private U8
102 0 op_first cUNOP->op_first opindex
103 0 op_last cBINOP->op_last opindex
104 0 op_other cLOGOP->op_other opindex
# found in 5.5.5, not on 5.5.8. I found 5.5.6 and 5.5.7 nowhere
0 <5.008 op_true cCONDOP->op_true opindex
0 <5.008 op_false cCONDOP->op_false opindex
0 <6.001 op_children cLISTOP->op_children U32
105 <10 op_pmreplroot cPMOP->op_pmreplroot opindex
111 !i<10 op_pmreplrootgv *(SV**)&cPMOP->op_pmreplroot svindex
106 <10 op_pmreplstart cPMOP->op_pmreplstart opindex
105 10 op_pmreplroot (cPMOP->op_pmreplrootu).op_pmreplroot opindex
106 10 op_pmreplstart (cPMOP->op_pmstashstartu).op_pmreplstart opindex
107 <10 op_pmnext *(OP**)&cPMOP->op_pmnext opindex
108 i8 op_pmstashpv cPMOP pvindex x
109 i<10 op_pmreplrootpo cPMOP->op_pmreplroot OP*/PADOFFSET
109 i10 op_pmreplrootpo (cPMOP->op_pmreplrootu).op_pmreplroot OP*/PADOFFSET
110 !i8-10 op_pmstash *(SV**)&cPMOP->op_pmstash svindex
110 !i10 op_pmstash *(SV**)&(cPMOP->op_pmstashstartu).op_pmreplstart svindex
111 !i10 op_pmreplrootgv *(SV**)&(cPMOP->op_pmreplrootu).op_pmreplroot svindex
112 0 pregcomp PL_op pvcontents x
113 0 op_pmflags cPMOP->op_pmflags pmflags x
114 <10 op_pmpermflags cPMOP->op_pmpermflags U16
115 8-10 op_pmdynflags cPMOP->op_pmdynflags U8
116 0 op_sv cSVOP->op_sv svindex
0 <6 op_gv *(SV**)&cGVOP->op_gv svindex
117 0 op_padix cPADOP->op_padix PADOFFSET
118 0 op_pv cPVOP->op_pv pvcontents
119 0 op_pv_tr cPVOP->op_pv op_tr_array
120 0 op_redoop cLOOP->op_redoop opindex
121 0 op_nextop cLOOP->op_nextop opindex
122 0 op_lastop cLOOP->op_lastop opindex
123 0 cop_label cCOP pvindex x
124 i0 cop_stashpv cCOP pvindex x
125 i0 cop_file cCOP pvindex x