[perl5.git] / bytecode.pl

use strict;
my %alias_to = (
    U32 => [qw(PADOFFSET STRLEN)],
    I32 => [qw(SSize_t long)],
    U16 => [qw(OPCODE line_t short)],
    U8 => [qw(char)],
    objindex => [qw(svindex opindex)]		
);

my @optype= qw(OP UNOP BINOP LOGOP CONDOP LISTOP PMOP SVOP GVOP 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 &sv_undef &sv_yes &sv_no);

my (%alias_from, $from, $tos);
while (($from, $tos) = each %alias_to) {
    map { $alias_from{$_} = $from } @$tos;
}

my $c_header = <<'EOT';
/*
 *      Copyright (c) 1996-1998 Malcolm Beattie
 *
 *      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.
 */
EOT

my $perl_header;
($perl_header = $c_header) =~ s{[/ ]?\*/?}{#}g;

unlink "byterun.c", "byterun.h", "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: $!";
print ASMDATA_PM $perl_header, <<'EOT';
package B::Asmdata;
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);

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, ">byterun.c") or die "byterun.c: $!";
print BYTERUN_C $c_header, <<'EOT';

#include "EXTERN.h"
#include "perl.h"
#include "bytecode.h"
#include "byterun.h"

#ifdef INDIRECT_BGET_MACROS
void byterun(struct bytestream bs)
#else
void byterun(FILE *fp)
#endif /* INDIRECT_BGET_MACROS */
{
    dTHR;
    int insn;
    while ((insn = FGETC()) != EOF) {
	switch (insn) {
EOT


my (@insn_name, $insn_num, $insn, $lvalue, $argtype, $flags, $fundtype);

while (<DATA>) {
    chop;
    s/#.*//;			# remove comments
    next unless length;
    if (/^%number\s+(.*)/) {
	$insn_num = $1;
	next;
    } elsif (/%enum\s+(.*?)\s+(.*)/) {
	create_enum($1, $2);	# must come before instructions
	next;
    }
    ($insn, $lvalue, $argtype, $flags) = split;
    $insn_name[$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 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";
\$insn_data{$insn} = [$insn_num, \\&PUT_$fundtype, "GET_$fundtype"];
EOT

    # Find the next unused instruction number
    do { $insn_num++ } while $insn_name[$insn_num];
}

#
# Finish off byterun.c
#
print BYTERUN_C <<'EOT';
	  default:
	    croak("Illegal bytecode instruction %d\n", insn);
	    /* NOTREACHED */
	}
    }
}
EOT

#
# Write the instruction and optype enum constants into byterun.h
#
open(BYTERUN_H, ">byterun.h") or die "byterun.h: $!";
print BYTERUN_H $c_header, <<'EOT';
#ifdef INDIRECT_BGET_MACROS
struct bytestream {
    void *data;
    int (*fgetc)(void *);
    int (*fread)(char *, size_t, size_t, void*);
    void (*freadpv)(U32, void*);
};
void freadpv _((U32, void *));
void byterun _((struct bytestream));
#else
void byterun _((FILE *));
#endif /* INDIRECT_BGET_MACROS */

#ifndef PATCHLEVEL
#include "patchlevel.h"
#endif
#if PATCHLEVEL < 4 || (PATCHLEVEL == 4 && SUBVERSION < 50)
#define dTHR extern int errno
#endif

enum {
EOT

my $i = 0;
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], $i;
print BYTERUN_H <<'EOT';
EXT int optype_size[]
#ifdef DOINIT
= {
EOT
for ($i = 0; $i < @optype - 1; $i++) {
    printf BYTERUN_H "    sizeof(%s),\n", $optype[$i], $i;
}
printf BYTERUN_H "    sizeof(%s)\n}\n", $optype[$i], $i;
print BYTERUN_H <<'EOT';
#endif /* DOINIT */
;

EOT

printf BYTERUN_H <<'EOT', scalar(@specialsv);
EXT SV * specialsv_list[%d];
#define INIT_SPECIALSV_LIST STMT_START { \
EOT
for ($i = 0; $i < @specialsv; $i++) {
    print BYTERUN_H "\tspecialsv_list[$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';

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;
EOT

__END__
# First set instruction ord("#") to read comment to end-of-line (sneaky)
%number 35
comment		arg			comment
# 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
#
#opcode		lvalue			argtype		flags	
#
ret		none			none		x
ldsv		sv			svindex
ldop		op			opindex
stsv		sv			U32		s
stop		op			U32		s
ldspecsv	sv			U8		x
newsv		sv			U8		x
newop		op			U8		x
newopn		op			U8		x
newpv		none			PV
pv_cur		pv.xpv_cur		STRLEN
pv_free		pv			none		x
sv_upgrade	sv			char		x
sv_refcnt	SvREFCNT(sv)		U32
sv_refcnt_add	SvREFCNT(sv)		I32		x
sv_flags	SvFLAGS(sv)		U32
xrv		SvRV(sv)		svindex
xpv		sv			none		x
xiv32		SvIVX(sv)		I32
xiv64		SvIVX(sv)		IV64
xnv		SvNVX(sv)		double
xlv_targoff	LvTARGOFF(sv)		STRLEN
xlv_targlen	LvTARGLEN(sv)		STRLEN
xlv_targ	LvTARG(sv)		svindex
xlv_type	LvTYPE(sv)		char
xbm_useful	BmUSEFUL(sv)		I32
xbm_previous	BmPREVIOUS(sv)		U16
xbm_rare	BmRARE(sv)		U8
xfm_lines	FmLINES(sv)		I32
xio_lines	IoLINES(sv)		long
xio_page	IoPAGE(sv)		long
xio_page_len	IoPAGE_LEN(sv)		long
xio_lines_left	IoLINES_LEFT(sv)	long
xio_top_name	IoTOP_NAME(sv)		pvcontents
xio_top_gv	*(SV**)&IoTOP_GV(sv)	svindex
xio_fmt_name	IoFMT_NAME(sv)		pvcontents
xio_fmt_gv	*(SV**)&IoFMT_GV(sv)	svindex
xio_bottom_name	IoBOTTOM_NAME(sv)	pvcontents
xio_bottom_gv	*(SV**)&IoBOTTOM_GV(sv)	svindex
xio_subprocess	IoSUBPROCESS(sv)	short
xio_type	IoTYPE(sv)		char
xio_flags	IoFLAGS(sv)		char
xcv_stash	*(SV**)&CvSTASH(sv)	svindex
xcv_start	CvSTART(sv)		opindex
xcv_root	CvROOT(sv)		opindex
xcv_gv		*(SV**)&CvGV(sv)	svindex
xcv_filegv	*(SV**)&CvFILEGV(sv)	svindex
xcv_depth	CvDEPTH(sv)		long
xcv_padlist	*(SV**)&CvPADLIST(sv)	svindex
xcv_outside	*(SV**)&CvOUTSIDE(sv)	svindex
xcv_flags	CvFLAGS(sv)		U8
av_extend	sv			SSize_t		x
av_push		sv			svindex		x
xav_fill	AvFILLp(sv)		SSize_t
xav_max		AvMAX(sv)		SSize_t
xav_flags	AvFLAGS(sv)		U8
xhv_riter	HvRITER(sv)		I32
xhv_name	HvNAME(sv)		pvcontents
hv_store	sv			svindex		x
sv_magic	sv			char		x
mg_obj		SvMAGIC(sv)->mg_obj	svindex
mg_private	SvMAGIC(sv)->mg_private	U16
mg_flags	SvMAGIC(sv)->mg_flags	U8
mg_pv		SvMAGIC(sv)		pvcontents	x
xmg_stash	*(SV**)&SvSTASH(sv)	svindex
gv_fetchpv	sv			strconst	x
gv_stashpv	sv			strconst	x
gp_sv		GvSV(sv)		svindex
gp_refcnt	GvREFCNT(sv)		U32
gp_refcnt_add	GvREFCNT(sv)		I32		x
gp_av		*(SV**)&GvAV(sv)	svindex
gp_hv		*(SV**)&GvHV(sv)	svindex
gp_cv		*(SV**)&GvCV(sv)	svindex
gp_filegv	*(SV**)&GvFILEGV(sv)	svindex
gp_io		*(SV**)&GvIOp(sv)	svindex
gp_form		*(SV**)&GvFORM(sv)	svindex
gp_cvgen	GvCVGEN(sv)		U32
gp_line		GvLINE(sv)		line_t
gp_share	sv			svindex		x
xgv_flags	GvFLAGS(sv)		U8
op_next		op->op_next		opindex
op_sibling	op->op_sibling		opindex
op_ppaddr	op->op_ppaddr		strconst	x
op_targ		op->op_targ		PADOFFSET
op_type		op			OPCODE		x
op_seq		op->op_seq		U16
op_flags	op->op_flags		U8
op_private	op->op_private		U8
op_first	cUNOP->op_first		opindex
op_last		cBINOP->op_last		opindex
op_other	cLOGOP->op_other	opindex
op_true		cCONDOP->op_true	opindex
op_false	cCONDOP->op_false	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
pregcomp	op			pvcontents	x
op_pmflags	cPMOP->op_pmflags	U16
op_pmpermflags	cPMOP->op_pmpermflags	U16
op_sv		cSVOP->op_sv		svindex
op_gv		*(SV**)&cGVOP->op_gv	svindex
op_pv		cPVOP->op_pv		pvcontents
op_pv_tr	cPVOP->op_pv		op_tr_array
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_stash	*(SV**)&cCOP->cop_stash		svindex
cop_filegv	*(SV**)&cCOP->cop_filegv	svindex
cop_seq		cCOP->cop_seq		U32
cop_arybase	cCOP->cop_arybase	I32
cop_line	cCOP->cop_line		line_t
main_start	main_start		opindex
main_root	main_root		opindex
curpad		curpad			svindex		x
Commit	Line	Data
a8a597b2 MB	1	use strict;
	2	my %alias_to = (
	3	U32 => [qw(PADOFFSET STRLEN)],
	4	I32 => [qw(SSize_t long)],
	5	U16 => [qw(OPCODE line_t short)],
	6	U8 => [qw(char)],
	7	objindex => [qw(svindex opindex)]
	8	);
	9
	10	my @optype= qw(OP UNOP BINOP LOGOP CONDOP LISTOP PMOP SVOP GVOP PVOP LOOP COP);
	11
	12	# Nullsv must come first in the following so that the condition
	13	# ($$sv == 0) can continue to be used to test (sv == Nullsv).
	14	my @specialsv = qw(Nullsv &sv_undef &sv_yes &sv_no);
	15
	16	my (%alias_from, $from, $tos);
	17	while (($from, $tos) = each %alias_to) {
	18	map { $alias_from{$_} = $from } @$tos;
	19	}
	20
	21	my $c_header = <<'EOT';
	22	/*
a8581515	23	* Copyright (c) 1996-1998 Malcolm Beattie
a8a597b2 MB	24	*
	25	* You may distribute under the terms of either the GNU General Public
	26	* License or the Artistic License, as specified in the README file.
	27	*
	28	*/
	29	/*
	30	* This file is autogenerated from bytecode.pl. Changes made here will be lost.
	31	*/
	32	EOT
	33
	34	my $perl_header;
	35	($perl_header = $c_header) =~ s{[/ ]?\*/?}{#}g;
	36
33b839e2	37	unlink "byterun.c", "byterun.h", "ext/B/B/Asmdata.pm";
a8a597b2 MB	38
	39	#
	40	# Start with boilerplate for Asmdata.pm
	41	#
33b839e2	42	open(ASMDATA_PM, ">ext/B/B/Asmdata.pm") or die "ext/B/B/Asmdata.pm: $!";
a8a597b2 MB	43	print ASMDATA_PM $perl_header, <<'EOT';
	44	package B::Asmdata;
	45	use Exporter;
	46	@ISA = qw(Exporter);
	47	@EXPORT_OK = qw(%insn_data @insn_name @optype @specialsv_name);
	48	use vars qw(%insn_data @insn_name @optype @specialsv_name);
	49
	50	EOT
	51	print ASMDATA_PM <<"EOT";
	52	\@optype = qw(@optype);
	53	\@specialsv_name = qw(@specialsv);
	54
	55	# XXX insn_data is initialised this way because with a large
	56	# %insn_data = (foo => [...], bar => [...], ...) initialiser
	57	# I get a hard-to-track-down stack underflow and segfault.
	58	EOT
	59
	60	#
	61	# Boilerplate for byterun.c
	62	#
	63	open(BYTERUN_C, ">byterun.c") or die "byterun.c: $!";
	64	print BYTERUN_C $c_header, <<'EOT';
	65
	66	#include "EXTERN.h"
	67	#include "perl.h"
	68	#include "bytecode.h"
	69	#include "byterun.h"
	70
	71	#ifdef INDIRECT_BGET_MACROS
33b839e2	72	void byterun(struct bytestream bs)
a8a597b2	73	#else
33b839e2	74	void byterun(FILE *fp)
a8a597b2 MB	75	#endif /* INDIRECT_BGET_MACROS */
	76	{
	77	dTHR;
	78	int insn;
	79	while ((insn = FGETC()) != EOF) {
	80	switch (insn) {
	81	EOT
	82
	83
	84	my (@insn_name, $insn_num, $insn, $lvalue, $argtype, $flags, $fundtype);
	85
	86	while (<DATA>) {
	87	chop;
	88	s/#.*//; # remove comments
	89	next unless length;
	90	if (/^%number\s+(.*)/) {
	91	$insn_num = $1;
	92	next;
	93	} elsif (/%enum\s+(.?)\s+(.)/) {
	94	create_enum($1, $2); # must come before instructions
	95	next;
	96	}
	97	($insn, $lvalue, $argtype, $flags) = split;
	98	$insn_name[$insn_num] = $insn;
	99	$fundtype = $alias_from{$argtype} \|\| $argtype;
	100
	101	#
	102	# Add the case statement and code for the bytecode interpreter in byterun.c
	103	#
	104	printf BYTERUN_C "\t case INSN_%s:\t\t/* %d */\n\t {\n",
	105	uc($insn), $insn_num;
	106	my $optarg = $argtype eq "none" ? "" : ", arg";
	107	if ($optarg) {
	108	printf BYTERUN_C "\t\t$argtype arg;\n\t\tBGET_%s(arg);\n", $fundtype;
	109	}
	110	if ($flags =~ /x/) {
	111	print BYTERUN_C "\t\tBSET_$insn($lvalue$optarg);\n";
	112	} elsif ($flags =~ /s/) {
	113	# Store instructions store to obj_list[arg]. "lvalue" field is rvalue.
	114	print BYTERUN_C "\t\tBSET_OBJ_STORE($lvalue$optarg);\n";
	115	}
	116	elsif ($optarg && $lvalue ne "none") {
	117	print BYTERUN_C "\t\t$lvalue = arg;\n";
	118	}
	119	print BYTERUN_C "\t\tbreak;\n\t }\n";
	120
	121	#
	122	# Add the initialiser line for %insn_data in Asmdata.pm
	123	#
	124	print ASMDATA_PM <<"EOT";
	125	\$insn_data{$insn} = [$insn_num, \\&PUT_$fundtype, "GET_$fundtype"];
	126	EOT
	127
	128	# Find the next unused instruction number
	129	do { $insn_num++ } while $insn_name[$insn_num];
	130	}
	131
	132	#
	133	# Finish off byterun.c
	134	#
	135	print BYTERUN_C <<'EOT';
	136	default:
	137	croak("Illegal bytecode instruction %d\n", insn);
	138	/* NOTREACHED */
139	}
140	}
141	}
142	EOT
143
144	#
145	# Write the instruction and optype enum constants into byterun.h
146	#
147	open(BYTERUN_H, ">byterun.h") or die "byterun.h: $!";
148	print BYTERUN_H $c_header, <<'EOT';
149	#ifdef INDIRECT_BGET_MACROS
150	struct bytestream {
151	void *data;
152	int (fgetc)(void );
153	int (fread)(char , size_t, size_t, void*);
154	void (freadpv)(U32, void);
155	};
156	void freadpv _((U32, void *));
157	void byterun _((struct bytestream));
158	#else
159	void byterun _((FILE *));
160	#endif /* INDIRECT_BGET_MACROS */
161
162	#ifndef PATCHLEVEL
163	#include "patchlevel.h"
164	#endif
165	#if PATCHLEVEL < 4 \|\| (PATCHLEVEL == 4 && SUBVERSION < 50)
166	#define dTHR extern int errno
167	#endif
168
169	enum {
170	EOT
171
172	my $i = 0;
173	my $add_enum_value = 0;
174	my $max_insn;
175	for ($i = 0; $i < @insn_name; $i++) {
176	$insn = uc($insn_name[$i]);
177	if (defined($insn)) {
178	$max_insn = $i;
179	if ($add_enum_value) {
180	print BYTERUN_H " INSN_$insn = $i,\t\t\t/* $i */\n";
181	$add_enum_value = 0;
182	} else {
183	print BYTERUN_H " INSN_$insn,\t\t\t/* $i */\n";
184	}
185	} else {
186	$add_enum_value = 1;
187	}
188	}
189
190	print BYTERUN_H " MAX_INSN = $max_insn\n};\n";
191
192	print BYTERUN_H "\nenum {\n";
193	for ($i = 0; $i < @optype - 1; $i++) {
194	printf BYTERUN_H " OPt_%s,\t\t/* %d */\n", $optype[$i], $i;
195	}
196	printf BYTERUN_H " OPt_%s\t\t/* %d */\n};\n\n", $optype[$i], $i;
197	print BYTERUN_H <<'EOT';
198	EXT int optype_size[]
199	#ifdef DOINIT
200	= {
201	EOT
202	for ($i = 0; $i < @optype - 1; $i++) {
203	printf BYTERUN_H " sizeof(%s),\n", $optype[$i], $i;
204	}
205	printf BYTERUN_H " sizeof(%s)\n}\n", $optype[$i], $i;
206	print BYTERUN_H <<'EOT';
207	#endif /* DOINIT */
208	;
209
210	EOT
211
212	printf BYTERUN_H <<'EOT', scalar(@specialsv);
213	EXT SV * specialsv_list[%d];
214	#define INIT_SPECIALSV_LIST STMT_START { \
215	EOT
216	for ($i = 0; $i < @specialsv; $i++) {
33b839e2	217	print BYTERUN_H "\tspecialsv_list[$i] = $specialsv[$i]; \\\n";
a8a597b2 MB	218	}
a8a597b2 MB	219	print BYTERUN_H <<'EOT';
33b839e2	220	} STMT_END
a8a597b2 MB	221	EOT
	222
	223	#
	224	# Finish off insn_data and create array initialisers in Asmdata.pm
	225	#
	226	print ASMDATA_PM <<'EOT';
	227
	228	my ($insn_name, $insn_data);
	229	while (($insn_name, $insn_data) = each %insn_data) {
	230	$insn_name[$insn_data->[0]] = $insn_name;
	231	}
	232	# Fill in any gaps
	233	@insn_name = map($_ \|\| "unused", @insn_name);
	234
	235	1;
	236	EOT
	237
	238	__END__
	239	# First set instruction ord("#") to read comment to end-of-line (sneaky)
	240	%number 35
	241	comment arg comment
	242	# Then make ord("\n") into a no-op
	243	%number 10
	244	nop none none
	245	# Now for the rest of the ordinary ones, beginning with \0 which is
	246	# ret so that \0-terminated strings can be read properly as bytecode.
	247	%number 0
	248	#
	249	#opcode lvalue argtype flags
	250	#
	251	ret none none x
	252	ldsv sv svindex
	253	ldop op opindex
	254	stsv sv U32 s
	255	stop op U32 s
	256	ldspecsv sv U8 x
	257	newsv sv U8 x
	258	newop op U8 x
	259	newopn op U8 x
	260	newpv none PV
	261	pv_cur pv.xpv_cur STRLEN
	262	pv_free pv none x
	263	sv_upgrade sv char x
	264	sv_refcnt SvREFCNT(sv) U32
	265	sv_refcnt_add SvREFCNT(sv) I32 x
	266	sv_flags SvFLAGS(sv) U32
	267	xrv SvRV(sv) svindex
	268	xpv sv none x
	269	xiv32 SvIVX(sv) I32
	270	xiv64 SvIVX(sv) IV64
	271	xnv SvNVX(sv) double
	272	xlv_targoff LvTARGOFF(sv) STRLEN
	273	xlv_targlen LvTARGLEN(sv) STRLEN
	274	xlv_targ LvTARG(sv) svindex
	275	xlv_type LvTYPE(sv) char
	276	xbm_useful BmUSEFUL(sv) I32
	277	xbm_previous BmPREVIOUS(sv) U16
	278	xbm_rare BmRARE(sv) U8
	279	xfm_lines FmLINES(sv) I32
	280	xio_lines IoLINES(sv) long
	281	xio_page IoPAGE(sv) long
	282	xio_page_len IoPAGE_LEN(sv) long
	283	xio_lines_left IoLINES_LEFT(sv) long
	284	xio_top_name IoTOP_NAME(sv) pvcontents
285	xio_top_gv (SV*)&IoTOP_GV(sv) svindex
286	xio_fmt_name IoFMT_NAME(sv) pvcontents
287	xio_fmt_gv (SV*)&IoFMT_GV(sv) svindex
288	xio_bottom_name IoBOTTOM_NAME(sv) pvcontents
289	xio_bottom_gv (SV*)&IoBOTTOM_GV(sv) svindex
290	xio_subprocess IoSUBPROCESS(sv) short
291	xio_type IoTYPE(sv) char
292	xio_flags IoFLAGS(sv) char
293	xcv_stash (SV*)&CvSTASH(sv) svindex
294	xcv_start CvSTART(sv) opindex
295	xcv_root CvROOT(sv) opindex
296	xcv_gv (SV*)&CvGV(sv) svindex
297	xcv_filegv (SV*)&CvFILEGV(sv) svindex
298	xcv_depth CvDEPTH(sv) long
299	xcv_padlist (SV*)&CvPADLIST(sv) svindex
300	xcv_outside (SV*)&CvOUTSIDE(sv) svindex
301	xcv_flags CvFLAGS(sv) U8
302	av_extend sv SSize_t x
303	av_push sv svindex x
304	xav_fill AvFILLp(sv) SSize_t
305	xav_max AvMAX(sv) SSize_t
306	xav_flags AvFLAGS(sv) U8
307	xhv_riter HvRITER(sv) I32
308	xhv_name HvNAME(sv) pvcontents
309	hv_store sv svindex x
310	sv_magic sv char x
311	mg_obj SvMAGIC(sv)->mg_obj svindex
312	mg_private SvMAGIC(sv)->mg_private U16
313	mg_flags SvMAGIC(sv)->mg_flags U8
314	mg_pv SvMAGIC(sv) pvcontents x
315	xmg_stash (SV*)&SvSTASH(sv) svindex
316	gv_fetchpv sv strconst x
317	gv_stashpv sv strconst x
318	gp_sv GvSV(sv) svindex
319	gp_refcnt GvREFCNT(sv) U32
320	gp_refcnt_add GvREFCNT(sv) I32 x
321	gp_av (SV*)&GvAV(sv) svindex
322	gp_hv (SV*)&GvHV(sv) svindex
323	gp_cv (SV*)&GvCV(sv) svindex
324	gp_filegv (SV*)&GvFILEGV(sv) svindex
325	gp_io (SV*)&GvIOp(sv) svindex
326	gp_form (SV*)&GvFORM(sv) svindex
327	gp_cvgen GvCVGEN(sv) U32
328	gp_line GvLINE(sv) line_t
329	gp_share sv svindex x
330	xgv_flags GvFLAGS(sv) U8
331	op_next op->op_next opindex
332	op_sibling op->op_sibling opindex
333	op_ppaddr op->op_ppaddr strconst x
334	op_targ op->op_targ PADOFFSET
335	op_type op OPCODE x
336	op_seq op->op_seq U16
337	op_flags op->op_flags U8
338	op_private op->op_private U8
339	op_first cUNOP->op_first opindex
340	op_last cBINOP->op_last opindex
341	op_other cLOGOP->op_other opindex
342	op_true cCONDOP->op_true opindex
343	op_false cCONDOP->op_false opindex
344	op_children cLISTOP->op_children U32
345	op_pmreplroot cPMOP->op_pmreplroot opindex
346	op_pmreplrootgv (SV*)&cPMOP->op_pmreplroot svindex
347	op_pmreplstart cPMOP->op_pmreplstart opindex
348	op_pmnext (OP*)&cPMOP->op_pmnext opindex
349	pregcomp op pvcontents x
350	op_pmflags cPMOP->op_pmflags U16
351	op_pmpermflags cPMOP->op_pmpermflags U16
352	op_sv cSVOP->op_sv svindex
353	op_gv (SV*)&cGVOP->op_gv svindex
354	op_pv cPVOP->op_pv pvcontents
355	op_pv_tr cPVOP->op_pv op_tr_array
356	op_redoop cLOOP->op_redoop opindex
357	op_nextop cLOOP->op_nextop opindex
358	op_lastop cLOOP->op_lastop opindex
359	cop_label cCOP->cop_label pvcontents
360	cop_stash (SV*)&cCOP->cop_stash svindex
361	cop_filegv (SV*)&cCOP->cop_filegv svindex
362	cop_seq cCOP->cop_seq U32
363	cop_arybase cCOP->cop_arybase I32
364	cop_line cCOP->cop_line line_t
365	main_start main_start opindex
366	main_root main_root opindex
367	curpad curpad svindex x