cebf4132ffdd93df7bedf38b08e241712566fa12
# Copyright (c) 1996, 1997, 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.
our $VERSION = '1.04_01';
my $o = $class->SUPER::new
(@_);
push @
$o, { values => [] };
push(@
{$section->[-1]{values}},@_);
return scalar(@
{$section->[-1]{values}})-1;
my ($section, $fh, $format) = @_;
my $sym = $section->symtable || {};
my $default = $section->default;
foreach (@
{$section->[-1]{values}})
s{(s\\_[0-9a-f]+)}{ exists($sym->{$1}) ?
$sym->{$1} : $default; }ge;
printf $fh $format, $_, $i;
package B
::C
::InitSection
;
@B::C
::InitSection
::ISA
= qw(B::C::Section);
my $max_lines = 10000; #pop;
my $section = $class->SUPER::new
( @_ );
$section->[-1]{evals
} = [];
$section->[-1]{chunks
} = [];
$section->[-1]{nosplit
} = 0;
$section->[-1]{current
} = [];
$section->[-1]{count
} = 0;
$section->[-1]{max_lines
} = $max_lines;
$section->[-1]{nosplit
}--
if $section->[-1]{nosplit
} > 0;
$section->[-1]{count
} += $_[0];
my $section = shift->[-1];
my $current = $section->{current
};
my $nosplit = $section->{nosplit
};
$section->{count
} += scalar(@_);
if( !$nosplit && $section->{count
} >= $section->{max_lines
} ) {
push @
{$section->{chunks
}}, $current;
$section->{current
} = [];
foreach my $i ( @strings ) {
push @
{$section->[-1]{evals
}}, @strings;
my( $section, $fh, $format, $init_name ) = @_;
my $sym = $section->symtable || {};
my $default = $section->default;
push @
{$section->[-1]{chunks
}}, $section->[-1]{current
};
foreach my $i ( @
{$section->[-1]{chunks
}} ) {
static int perl_init_${name}()
{ exists($sym->{$1}) ?
$sym->{$1} : $default; }ge;
print $fh "\treturn 0;\n}\n";
$section->SUPER::add
( "perl_init_${name}();" );
foreach my $i ( @
{$section->[-1]{evals
}} ) {
$section->SUPER::add
( sprintf q{eval_pv("%s",1);}, $i );
static int ${init_name}()
$section->SUPER::output
( $fh, $format );
print $fh "\treturn 0;\n}\n";
{ # block necessary for caller to work
XSLoader
::load
( 'B::C' );
@EXPORT_OK = qw(output_all output_boilerplate output_main mark_unused
init_sections set_callback save_unused_subs objsym save_context);
use B
qw(minus_c sv_undef walkoptree walksymtable main_root main_start peekop
class cstring cchar svref_2object compile_stats comppadlist hash
threadsv_names main_cv init_av end_av regex_padav opnumber amagic_generation
HEf_SVKEY SVf_POK SVf_ROK CVf_CONST);
use B
::Asmdata
qw(@specialsv_name);
my $optimize_warn_sv = 0;
my $use_perl_script_name = 0;
my ($debug_cops, $debug_av, $debug_cv, $debug_mg);
my $ithreads = $Config{useithreads} eq 'define';
@threadsv_names = threadsv_names();
my ($init, $decl, $symsect, $binopsect, $condopsect, $copsect,
$padopsect, $listopsect, $logopsect, $loopsect, $opsect, $pmopsect,
$pvopsect, $svopsect, $unopsect, $svsect, $xpvsect, $xpvavsect,
$xpvhvsect, $xpvcvsect, $xpvivsect, $xpvnvsect, $xpvmgsect, $xpvlvsect,
$xrvsect, $xpvbmsect, $xpviosect );
my @op_sections = \( $binopsect, $condopsect, $copsect, $padopsect, $listopsect,
$logopsect, $loopsect, $opsect, $pmopsect, $pvopsect, $svopsect,
sub walk_and_save_optree;
my $saveoptree_callback = \&walk_and_save_optree;
sub set_callback { $saveoptree_callback = shift }
sub saveoptree { &$saveoptree_callback(@_) }
sub walk_and_save_optree {
my ($name, $root, $start) = @_;
walkoptree($root, "save");
# Look this up here so we can do just a number compare
# rather than looking up the name of every BASEOP in B::OP
my $OP_THREADSV = opnumber('threadsv');
my $sym = sprintf("s\\_%x", $$obj);
$symtable{$sym} = $value;
return $symtable{sprintf("s\\_%x", $$obj)};
return 0 if $sym eq "sym_0"; # special case
$value = $symtable{$sym};
warn "warning: undefined symbol $sym\n" if $warn_undefined_syms;
my $sym = sprintf("re%d", $re_index++);
$decl->add(sprintf("static char *$sym = %s;", cstring($re)));
return ($sym,length(pack "a*",$re));
my $pv = pack "a*", shift;
$pvsym = sprintf("pv%d", $pv_index++);
if( defined $max_string_len && length($pv) > $max_string_len ) {
my $chars = join ', ', map { cchar $_ } split //, $pv;
$decl->add(sprintf("static char %s[] = { %s };", $pvsym, $chars));
my $cstring = cstring($pv);
if ($cstring ne "0") { # sic
$decl->add(sprintf("static char %s[] = %s;",
$pvmax = length(pack "a*",$pv) + 1;
# confess "Can't save RV: not ROK" unless $sv->FLAGS & SVf_ROK;
$rv =~ s/^\(([AGHS]V|IO)\s*\*\)\s*(\&sv_list.*)$/$2/;
# savesym, pvmax, len, pv
my $rok = $sv->FLAGS & SVf_ROK;
my $pok = $sv->FLAGS & SVf_POK;
my( $len, $pvmax, $savesym, $pv ) = ( 0, 0 );
$savesym = '(char*)' . save_rv( $sv );
$pv = $pok ? (pack "a*", $sv->PV) : undef;
$len = $pok ? length($pv) : 0;
($savesym, $pvmax) = $pok ? savepv($pv) : ( 'NULL', 0 );
return ( $savesym, $pvmax, $len, $pv );
# see also init_op_ppaddr below; initializes the ppaddt to the
# OpTYPE; init_op_ppaddr iterates over the ops and sets
# op_ppaddr to PL_ppaddr[op_ppaddr]; this avoids an explicit assignmente
# in perl_init ( ~10 bytes/op with GCC/i386 )
return $optimize_ppaddr ?
sprintf("INT2PTR(void*,OP_%s)", uc( $_[0]->name ) ) :
# This pair is needed becase B::FAKEOP::save doesn't scalar dereference
# $op->next and $op->sibling
# For 5.9 the hard coded text is the values for op_opt and op_static in each
# op. The value of op_opt is irrelevant, and the value of op_static needs to
# be 1 to tell op_free that this is a statically defined op and that is
# Current workaround/fix for op_free() trying to free statically
# defined OPs is to set op_seq = -1 and check for that in op_free().
# Instead of hardwiring -1 in place of $op->seq, we use $op_seq
# so that it can be changed back easily if necessary. In fact, to
# stop compilers from moaning about a U16 being initialised with an
# uncast -1 (the printf format is %d so we can't tweak it), we have
# to "know" that op_seq is a U16 and use 65535. Ugh.
my $static = $] > 5.009 ? '0, 1, 0' : sprintf "%u", 65535;
sub B::OP::_save_common_middle {
sprintf ("%s, %u, %u, $static, 0x%x, 0x%x",
$op->fake_ppaddr, $op->targ, $op->type, $op->flags, $op->private);
sub B::OP::_save_common {
return sprintf("s\\_%x, s\\_%x, %s",
${$op->next}, ${$op->sibling}, $op->_save_common_middle);
return $sym if defined $sym;
$nullop_count++ unless $type;
if ($type == $OP_THREADSV) {
# saves looking up ppaddr but it's a bit naughty to hard code this
$init->add(sprintf("(void)find_threadsv(%s);",
cstring($threadsv_names[$op->targ])));
$opsect->add($op->_save_common);
$init->add(sprintf("op_list[$ix].op_ppaddr = %s;", $op->ppaddr))
savesym($op, "&op_list[$ix]");
my ($class, %objdata) = @_;
$opsect->add(sprintf("%s, %s, %s",
$op->next, $op->sibling, $op->_save_common_middle));
$init->add(sprintf("op_list[$ix].op_ppaddr = %s;", $op->ppaddr))
sub B::FAKEOP::next { $_[0]->{"next"} || 0 }
sub B::FAKEOP::type { $_[0]->{type} || 0}
sub B::FAKEOP::sibling { $_[0]->{sibling} || 0 }
sub B::FAKEOP::ppaddr { $_[0]->{ppaddr} || 0 }
sub B::FAKEOP::targ { $_[0]->{targ} || 0 }
sub B::FAKEOP::flags { $_[0]->{flags} || 0 }
sub B::FAKEOP::private { $_[0]->{private} || 0 }
return $sym if defined $sym;
$unopsect->add(sprintf("%s, s\\_%x", $op->_save_common, ${$op->first}));
my $ix = $unopsect->index;
$init->add(sprintf("unop_list[$ix].op_ppaddr = %s;", $op->ppaddr))
savesym($op, "(OP*)&unop_list[$ix]");
return $sym if defined $sym;
$binopsect->add(sprintf("%s, s\\_%x, s\\_%x",
$op->_save_common, ${$op->first}, ${$op->last}));
my $ix = $binopsect->index;
$init->add(sprintf("binop_list[$ix].op_ppaddr = %s;", $op->ppaddr))
savesym($op, "(OP*)&binop_list[$ix]");
return $sym if defined $sym;
$listopsect->add(sprintf("%s, s\\_%x, s\\_%x",
$op->_save_common, ${$op->first}, ${$op->last}));
my $ix = $listopsect->index;
$init->add(sprintf("listop_list[$ix].op_ppaddr = %s;", $op->ppaddr))
savesym($op, "(OP*)&listop_list[$ix]");
return $sym if defined $sym;
$logopsect->add(sprintf("%s, s\\_%x, s\\_%x",
$op->_save_common, ${$op->first}, ${$op->other}));
my $ix = $logopsect->index;
$init->add(sprintf("logop_list[$ix].op_ppaddr = %s;", $op->ppaddr))
savesym($op, "(OP*)&logop_list[$ix]");
return $sym if defined $sym;
#warn sprintf("LOOP: redoop %s, nextop %s, lastop %s\n",
# peekop($op->redoop), peekop($op->nextop),
# peekop($op->lastop)); # debug
$loopsect->add(sprintf("%s, s\\_%x, s\\_%x, s\\_%x, s\\_%x, s\\_%x",
$op->_save_common, ${$op->first}, ${$op->last},
${$op->redoop}, ${$op->nextop},
my $ix = $loopsect->index;
$init->add(sprintf("loop_list[$ix].op_ppaddr = %s;", $op->ppaddr))
savesym($op, "(OP*)&loop_list[$ix]");
return $sym if defined $sym;
$pvopsect->add(sprintf("%s, %s", $op->_save_common, cstring($op->pv)));
my $ix = $pvopsect->index;
$init->add(sprintf("pvop_list[$ix].op_ppaddr = %s;", $op->ppaddr))
savesym($op, "(OP*)&pvop_list[$ix]");
return $sym if defined $sym;
my $svsym = '(SV*)' . $sv->save;
my $is_const_addr = $svsym =~ m/Null|\&/;
$svopsect->add(sprintf("%s, %s", $op->_save_common,
( $is_const_addr ? $svsym : 'Nullsv' )));
my $ix = $svopsect->index;
$init->add(sprintf("svop_list[$ix].op_ppaddr = %s;", $op->ppaddr))
$init->add("svop_list[$ix].op_sv = $svsym;")
savesym($op, "(OP*)&svop_list[$ix]");
return $sym if defined $sym;
$padopsect->add(sprintf("%s, %d",
$op->_save_common, $op->padix));
my $ix = $padopsect->index;
$init->add(sprintf("padop_list[$ix].op_ppaddr = %s;", $op->ppaddr))
# $init->add(sprintf("padop_list[$ix].op_padix = %ld;", $op->padix));
savesym($op, "(OP*)&padop_list[$ix]");
return $sym if defined $sym;
warn sprintf("COP: line %d file %s\n", $op->line, $op->file)
# shameless cut'n'paste from B::Deparse
my $warnings = $op->warnings;
my $is_special = $warnings->isa("B::SPECIAL");
if ($is_special && $$warnings == 4) {
$warn_sv = $optimize_warn_sv ?
elsif ($is_special && $$warnings == 5) {
$warn_sv = $optimize_warn_sv ?
$warn_sv = $optimize_warn_sv ?
$warn_sv = $warnings->save;
$copsect->add(sprintf("%s, %s, NULL, NULL, %u, %d, %u, %s",
$op->_save_common, cstring($op->label), $op->cop_seq,
( $optimize_warn_sv ? $warn_sv : 'NULL' )));
my $ix = $copsect->index;
$init->add(sprintf("cop_list[$ix].op_ppaddr = %s;", $op->ppaddr))
$init->add(sprintf("cop_list[$ix].cop_warnings = %s;", $warn_sv ))
unless $optimize_warn_sv;
$init->add(sprintf("CopFILE_set(&cop_list[$ix], %s);", cstring($op->file)),
sprintf("CopSTASHPV_set(&cop_list[$ix], %s);", cstring($op->stashpv)));
savesym($op, "(OP*)&cop_list[$ix]");
return $sym if defined $sym;
my $replroot = $op->pmreplroot;
my $replstart = $op->pmreplstart;
my $replstartfield = sprintf("s\\_%x", $$replstart);
my $ppaddr = $op->ppaddr;
# under ithreads, OP_PUSHRE.op_replroot is an integer
$replrootfield = sprintf("s\\_%x", $$replroot) if ref $replroot;
if($ithreads && $op->name eq "pushre") {
$replrootfield = "INT2PTR(OP*,${replroot})";
# OP_PUSHRE (a mutated version of OP_MATCH for the regexp
# argument to a split) stores a GV in op_pmreplroot instead
# of a substitution syntax tree. We don't want to walk that...
if ($op->name eq "pushre") {
$gvsym = $replroot->save;
# warn "PMOP::save saving a pp_pushre with GV $gvsym\n"; # debug
$replstartfield = saveoptree("*ignore*", $replroot, $replstart);
# pmnext handling is broken in perl itself, I think. Bad op_pmnext
# fields aren't noticed in perl's runtime (unless you try reset) but we
# segfault when trying to dereference it to find op->op_pmnext->op_type
$pmopsect->add(sprintf("%s, s\\_%x, s\\_%x, %s, %s, 0, %u, 0x%x, 0x%x, 0x%x",
$op->_save_common, ${$op->first}, ${$op->last},
$replrootfield, $replstartfield,
( $ithreads ? $op->pmoffset : 0 ),
$op->pmflags, $op->pmpermflags, $op->pmdynflags ));
my $pm = sprintf("pmop_list[%d]", $pmopsect->index);
$init->add(sprintf("$pm.op_ppaddr = %s;", $ppaddr))
my( $resym, $relen ) = savere( $re );
$init->add(sprintf("PM_SETRE(&$pm,pregcomp($resym, $resym + %u, &$pm));",
$init->add("$pm.op_pmreplroot = (OP*)$gvsym;");
savesym($op, "(OP*)&$pm");
# special case: $$sv is not the address but an index into specialsv_list
# warn "SPECIAL::save specialsv $$sv\n"; # debug
my $sym = $specialsv_name[$$sv];
confess "unknown specialsv index $$sv passed to B::SPECIAL::save";
return $sym if defined $sym;
# warn "Saving SVt_NULL SV\n"; # debug
warn "NULL::save for sv = 0 called from @{[(caller(1))[3]]}\n";
return savesym($sv, "(void*)Nullsv /* XXX */");
$svsect->add(sprintf("0, %u, 0x%x", $sv->REFCNT , $sv->FLAGS));
return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
return $sym if defined $sym;
$xpvivsect->add(sprintf("0, 0, 0, %d", $sv->IVX));
$svsect->add(sprintf("&xpviv_list[%d], %lu, 0x%x",
$xpvivsect->index, $sv->REFCNT , $sv->FLAGS));
return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
return $sym if defined $sym;
$val .= '.00' if $val =~ /^-?\d+$/;
$xpvnvsect->add(sprintf("0, 0, 0, %d, %s", $sv->IVX, $val));
$svsect->add(sprintf("&xpvnv_list[%d], %lu, 0x%x",
$xpvnvsect->index, $sv->REFCNT , $sv->FLAGS));
return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
# work with byte offsets/lengths
if (defined $max_string_len && length($pv) > $max_string_len) {
push @res, sprintf("Newx(%s,%u,char);", $dest, length($pv)+1);
my $str = substr $pv, 0, $max_string_len, '';
push @res, sprintf("Copy(%s,$dest+$offset,%u,char);",
cstring($str), length($str));
push @res, sprintf("%s[%u] = '\\0';", $dest, $offset);
push @res, sprintf("%s = savepvn(%s, %u);", $dest,
cstring($pv), length($pv));
return $sym if defined $sym;
my ($pvsym, $pvmax) = savepv($pv);
my ($lvtarg, $lvtarg_sym);
$xpvlvsect->add(sprintf("%s, %u, %u, %d, %g, 0, 0, %u, %u, 0, %s",
$pvsym, $len, $pvmax, $sv->IVX, $sv->NVX,
$sv->TARGOFF, $sv->TARGLEN, cchar($sv->TYPE)));
$svsect->add(sprintf("&xpvlv_list[%d], %lu, 0x%x",
$xpvlvsect->index, $sv->REFCNT , $sv->FLAGS));
$init->add(savepvn(sprintf("xpvlv_list[%d].xpv_pv",
$xpvlvsect->index), $pv));
return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
return $sym if defined $sym;
my( $savesym, $pvmax, $len, $pv ) = save_pv_or_rv( $sv );
$xpvivsect->add(sprintf("%s, %u, %u, %d", $savesym, $len, $pvmax, $sv->IVX));
$svsect->add(sprintf("&xpviv_list[%d], %u, 0x%x",
$xpvivsect->index, $sv->REFCNT , $sv->FLAGS));
if (defined($pv) && !$pv_copy_on_grow) {
$init->add(savepvn(sprintf("xpviv_list[%d].xpv_pv",
$xpvivsect->index), $pv));
return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
return $sym if defined $sym;
my( $savesym, $pvmax, $len, $pv ) = save_pv_or_rv( $sv );
$val .= '.00' if $val =~ /^-?\d+$/;
$xpvnvsect->add(sprintf("%s, %u, %u, %d, %s",
$savesym, $len, $pvmax, $sv->IVX, $val));
$svsect->add(sprintf("&xpvnv_list[%d], %lu, 0x%x",
$xpvnvsect->index, $sv->REFCNT , $sv->FLAGS));
if (defined($pv) && !$pv_copy_on_grow) {
$init->add(savepvn(sprintf("xpvnv_list[%d].xpv_pv",
$xpvnvsect->index), $pv));
return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
return $sym if defined $sym;
my $pv = pack "a*", ($sv->PV . "\0" . $sv->TABLE);
$xpvbmsect->add(sprintf("0, %u, %u, %d, %s, 0, 0, %d, %u, 0x%x",
$len, $len + 258, $sv->IVX, $sv->NVX,
$sv->USEFUL, $sv->PREVIOUS, $sv->RARE));
$svsect->add(sprintf("&xpvbm_list[%d], %lu, 0x%x",
$xpvbmsect->index, $sv->REFCNT , $sv->FLAGS));
$init->add(savepvn(sprintf("xpvbm_list[%d].xpv_pv",
$xpvbmsect->index), $pv),
sprintf("xpvbm_list[%d].xpv_cur = %u;",
$xpvbmsect->index, $len - 257));
return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
return $sym if defined $sym;
my( $savesym, $pvmax, $len, $pv ) = save_pv_or_rv( $sv );
$xpvsect->add(sprintf("%s, %u, %u", $savesym, $len, $pvmax));
$svsect->add(sprintf("&xpv_list[%d], %lu, 0x%x",
$xpvsect->index, $sv->REFCNT , $sv->FLAGS));
if (defined($pv) && !$pv_copy_on_grow) {
$init->add(savepvn(sprintf("xpv_list[%d].xpv_pv",
return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
return $sym if defined $sym;
my( $savesym, $pvmax, $len, $pv ) = save_pv_or_rv( $sv );
$xpvmgsect->add(sprintf("%s, %u, %u, %d, %s, 0, 0",
$svsect->add(sprintf("&xpvmg_list[%d], %lu, 0x%x",
$xpvmgsect->index, $sv->REFCNT , $sv->FLAGS));
if (defined($pv) && !$pv_copy_on_grow) {
$init->add(savepvn(sprintf("xpvmg_list[%d].xpv_pv",
$xpvmgsect->index), $pv));
$sym = savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
sub B::PVMG::save_magic {
#warn sprintf("saving magic for %s (0x%x)\n", class($sv), $$sv); # debug
my $stash = $sv->SvSTASH;
warn sprintf("xmg_stash = %s (0x%x)\n", $stash->NAME, $$stash)
# XXX Hope stash is already going to be saved.
$init->add(sprintf("SvSTASH(s\\_%x) = s\\_%x;", $$sv, $$stash));
my @mgchain = $sv->MAGIC;
my ($mg, $type, $obj, $ptr,$len,$ptrsv);
warn sprintf("magic %s (0x%x), obj %s (0x%x), type %s, ptr %s\n",
class($sv), $$sv, class($obj), $$obj,
cchar($type), cstring($ptr));
$ptrsv=svref_2object($ptr)->save;
$init->add(sprintf("sv_magic((SV*)s\\_%x, (SV*)s\\_%x, %s,(char *) %s, %d);",
$$sv, $$obj, cchar($type),$ptrsv,$len));
confess "PMOP not found for REGEXP $rx" unless $pmop;
my( $resym, $relen ) = savere( $mg->precomp );
$init->add( split /\n/, sprintf <<CODE, $$sv, cchar($type), cstring($ptr) );
REGEXP* rx = pregcomp($resym, $resym + $relen, (PMOP*)$pmsym);
sv_magic((SV*)s\\_%x, (SV*)rx, %s, %s, %d);
$init->add(sprintf("sv_magic((SV*)s\\_%x, (SV*)s\\_%x, %s, %s, %d);",
$$sv, $$obj, cchar
($type),cstring
($ptr),$len));
return $sym if defined $sym;
# GVs need to be handled at runtime
if( ref( $sv->RV ) eq 'B::GV' ) {
$xrvsect->add( "(SV*)Nullgv" );
$init->add(sprintf("xrv_list[%d].xrv_rv = (SV*)%s;\n", $xrvsect->index, $rv));
elsif( $sv->RV->isa( 'B::HV' ) && $sv->RV->NAME ) {
$xrvsect->add( "(SV*)Nullhv" );
$init->add(sprintf("xrv_list[%d].xrv_rv = (SV*)%s;\n", $xrvsect->index, $rv));
$svsect->add(sprintf("&xrv_list[%d], %lu, 0x%x",
$xrvsect->index, $sv->REFCNT , $sv->FLAGS));
return savesym
($sv, sprintf("&sv_list[%d]", $svsect->index));
my ($cvstashname, $cvname) = @_;
warn sprintf("No definition for sub %s::%s\n", $cvstashname, $cvname);
# Handle AutoLoader classes explicitly. Any more general AUTOLOAD
# use should be handled by the class itself.
my $isa = \@
{"$cvstashname\::ISA"};
if (grep($_ eq "AutoLoader", @
$isa)) {
warn "Forcing immediate load of sub derived from AutoLoader\n";
# Tweaked version of AutoLoader::AUTOLOAD
eval { require "auto/$dir/$cvname.al" };
warn qq(failed
require "auto/$dir/$cvname.al": $@
\n);
# warn sprintf("CV 0x%x already saved as $sym\n", $$cv); # debug
# Reserve a place in svsect and xpvcvsect and record indices
my ($cvname, $cvstashname);
$cvstashname = $gv->STASH->NAME;
my $isconst = $cv->CvFLAGS & CVf_CONST
;
my $value = $cv->XSUBANY;
my $stsym = $stash->save;
my $name = cstring
($cvname);
$decl->add( "static CV* cv$cv_index;" );
$init->add( "cv$cv_index = newCONSTSUB( $stsym, NULL, $vsym );" );
my $sym = savesym
( $cv, "cv$cv_index" );
#INIT is removed from the symbol table, so this call must come
# from PL_initav->save. Re-bootstrapping will push INIT back in
# so nullop should be sent.
if (!$isconst && $cvxsub && ($cvname ne "INIT")) {
my $stashname = $egv->STASH->NAME;
if ($cvname eq "bootstrap")
$decl->add("/* bootstrap $file */");
warn "Bootstrap $stashname $file\n";
# if it not isa('DynaLoader'), it should hopefully be XSLoaded
# ( attributes being an exception, of course )
if( $stashname ne 'attributes' &&
!UNIVERSAL
::isa
($stashname,'DynaLoader') ) {
$xsub{$stashname}='Dynamic-XSLoaded';
$xsub{$stashname}='Dynamic';
# $xsub{$stashname}='Static' unless $xsub{$stashname};
# XSUBs for IO::File, IO::Handle, IO::Socket,
# IO::Seekable and IO::Poll
# are defined in IO.xs, so let's bootstrap it
svref_2object
( \
&IO
::bootstrap
)->save
if grep { $stashname eq $_ } qw(IO::File IO::Handle IO::Socket
warn sprintf("stub for XSUB $cvstashname\:\:$cvname CV 0x%x\n", $$cv) if $debug_cv;
return qq/(perl_get_cv("$stashname\:\:$cvname",TRUE))/;
if ($cvxsub && $cvname eq "INIT") {
return svref_2object
(\
&Dummy_initxs
)->save;
my $sv_ix = $svsect->index + 1;
$svsect->add("svix$sv_ix");
my $xpvcv_ix = $xpvcvsect->index + 1;
$xpvcvsect->add("xpvcvix$xpvcv_ix");
# Save symbol now so that GvCV() doesn't recurse back to us via CvGV()
$sym = savesym
($cv, "&sv_list[$sv_ix]");
warn sprintf("saving $cvstashname\:\:$cvname CV 0x%x as $sym\n", $$cv) if $debug_cv;
if (!$$root && !$cvxsub) {
if (try_autoload
($cvstashname, $cvname)) {
# Recalculate root and xsub
warn "Successful forced autoload\n";
my $padlist = $cv->PADLIST;
warn sprintf("saving op tree for CV 0x%x, root = 0x%x\n",
$$cv, $$root) if $debug_cv;
my $stashname = $gv->STASH->NAME;
if ($gvname ne "__ANON__") {
$ppname = (${$gv->FORM} == $$cv) ?
"pp_form_" : "pp_sub_";
$ppname .= ($stashname eq "main") ?
$gvname : "$stashname\::$gvname";
$ppname .= "_$initsub_index";
$ppname = "pp_anonsub_$anonsub_index";
$startfield = saveoptree
($ppname, $root, $cv->START, $padlist->ARRAY);
warn sprintf("done saving op tree for CV 0x%x, name %s, root 0x%x\n",
$$cv, $ppname, $$root) if $debug_cv;
warn sprintf("saving PADLIST 0x%x for CV 0x%x\n",
$$padlist, $$cv) if $debug_cv;
warn sprintf("done saving PADLIST 0x%x for CV 0x%x\n",
$$padlist, $$cv) if $debug_cv;
warn sprintf("No definition for sub %s::%s (unable to autoload)\n",
$cvstashname, $cvname); # debug
$pv = '' unless defined $pv; # Avoid use of undef warnings
$symsect->add(sprintf("xpvcvix%d\t%s, %u, 0, %d, %s, 0, Nullhv, Nullhv, %s, s\\_%x, $xsub, $xsubany, Nullgv, \"\", %d, s\\_%x, (CV*)s\\_%x, 0x%x, 0x%x",
$xpvcv_ix, cstring
($pv), length($pv), $cv->IVX,
$cv->NVX, $startfield, ${$cv->ROOT}, $cv->DEPTH,
$$padlist, ${$cv->OUTSIDE}, $cv->CvFLAGS,
if (${$cv->OUTSIDE} == ${main_cv
()}){
$init->add(sprintf("CvOUTSIDE(s\\_%x)=PL_main_cv;",$$cv));
$init->add(sprintf("SvREFCNT_inc(PL_main_cv);"));
$init->add(sprintf("CvGV(s\\_%x) = s\\_%x;",$$cv,$$gv));
warn sprintf("done saving GV 0x%x for CV 0x%x\n",
$$gv, $$cv) if $debug_cv;
$init->add( savepvn
( "CvFILE($sym)", $cv->FILE) );
$init->add(sprintf("CvFILE($sym) = %s;", cstring
($cv->FILE)));
$init->add(sprintf("CvSTASH(s\\_%x) = s\\_%x;", $$cv, $$stash));
warn sprintf("done saving STASH 0x%x for CV 0x%x\n",
$$stash, $$cv) if $debug_cv;
$symsect->add(sprintf("svix%d\t(XPVCV*)&xpvcv_list[%u], %lu, 0x%x",
$sv_ix, $xpvcv_ix, $cv->REFCNT +1*0 , $cv->FLAGS));
#warn sprintf("GV 0x%x already saved as $sym\n", $$gv); # debug
$sym = savesym
($gv, "gv_list[$ix]");
#warn sprintf("Saving GV 0x%x as $sym\n", $$gv); # debug
my $is_empty = $gv->is_empty;
my $fullname = $gv->STASH->NAME . "::" . $gvname;
my $name = cstring
($fullname);
#warn "GV name is $name\n"; # debug
#warn(sprintf("EGV name is %s, saving it now\n",
# $egv->STASH->NAME . "::" . $egv->NAME)); # debug
$init->add(qq[$sym = gv_fetchpv
($name, TRUE
, SVt_PV
);],
sprintf("SvFLAGS($sym) = 0x%x;", $gv->FLAGS ),
sprintf("GvFLAGS($sym) = 0x%x;", $gv->GvFLAGS));
$init->add(sprintf("GvLINE($sym) = %u;", $gv->LINE)) unless $is_empty;
# XXX hack for when Perl accesses PVX of GVs
$init->add("SvPVX($sym) = emptystring;\n");
# Shouldn't need to do save_magic since gv_fetchpv handles that
# XXX will always be > 1!!!
my $refcnt = $gv->REFCNT + 1;
$init->add(sprintf("SvREFCNT($sym) += %u;", $refcnt - 1 )) if $refcnt > 1;
return $sym if $is_empty;
# XXX B::walksymtable creates an extra reference to the GV
my $gvrefcnt = $gv->GvREFCNT;
$init->add(sprintf("GvREFCNT($sym) += %u;", $gvrefcnt - 1));
# some non-alphavetic globs require some parts to be saved
if( $gvname !~ /^([^A-Za-z]|STDIN|STDOUT|STDERR|ARGV|SIG|ENV)$/ ) {
$savefields = Save_HV
|Save_AV
|Save_SV
|Save_CV
|Save_FORM
|Save_IO
;
elsif( $gvname eq '!' ) {
# attributes::bootstrap is created in perl_parse
# saving it would overwrite it, because perl_init() is
# called after perl_parse()
$savefields&=~Save_CV
if $fullname eq 'attributes::bootstrap';
if (defined($egvsym) && $egvsym !~ m/Null/ ) {
# Shared glob *foo = *bar
$init->add("gp_free($sym);",
"GvGP($sym) = GvGP($egvsym);");
# Don't save subfields of special GVs (*_, *1, *# and so on)
# warn "GV::save saving subfields\n"; # debug
if ($$gvsv && $savefields&Save_SV
) {
$init->add(sprintf("GvSV($sym) = s\\_%x;", $$gvsv));
# warn "GV::save \$$name\n"; # debug
if ($$gvav && $savefields&Save_AV
) {
$init->add(sprintf("GvAV($sym) = s\\_%x;", $$gvav));
# warn "GV::save \@$name\n"; # debug
if ($$gvhv && $savefields&Save_HV
) {
$init->add(sprintf("GvHV($sym) = s\\_%x;", $$gvhv));
# warn "GV::save \%$name\n"; # debug
if ($$gvcv && $savefields&Save_CV
) {
my $origname=cstring
($gvcv->GV->EGV->STASH->NAME .
"::" . $gvcv->GV->EGV->NAME);
if (0 && $gvcv->XSUB && $name ne $origname) { #XSUB alias
# must save as a 'stub' so newXS() has a CV to populate
$init->add("\tcv=perl_get_cv($origname,TRUE);");
$init->add("\tGvCV($sym)=cv;");
$init->add("\tSvREFCNT_inc((SV *)cv);");
$init->add(sprintf("GvCV($sym) = (CV*)(%s);", $gvcv->save));
# warn "GV::save &$name\n"; # debug
$init->add(sprintf("GvFILE($sym) = %s;", cstring
($gv->FILE)));
# warn "GV::save GvFILE(*$name)\n"; # debug
if ($$gvform && $savefields&Save_FORM
) {
$init->add(sprintf("GvFORM($sym) = (CV*)s\\_%x;", $$gvform));
# warn "GV::save GvFORM(*$name)\n"; # debug
if ($$gvio && $savefields&Save_IO
) {
$init->add(sprintf("GvIOp($sym) = s\\_%x;", $$gvio));
if( $fullname =~ m/::DATA$/ && $save_data_fh ) {
my $fh = *{$fullname}{IO
};
$gvio->save_data( $fullname, <$fh> ) if $fh->opened;
# warn "GV::save GvIO(*$name)\n"; # debug
return $sym if defined $sym;
my $line = "0, -1, -1, 0, 0.0, 0, Nullhv, 0, 0";
$line .= sprintf(", 0x%x", $av->AvFLAGS) if $] < 5.009;
$svsect->add(sprintf("&xpvav_list[%d], %lu, 0x%x",
$xpvavsect->index, $av->REFCNT , $av->FLAGS));
my $sv_list_index = $svsect->index;
$line = sprintf("saving AV 0x%x FILL=$fill", $$av);
$line .= sprintf(" AvFLAGS=0x%x", $av->AvFLAGS) if $] < 5.009;
# XXX AVf_REAL is wrong test: need to save comppadlist but not stack
#if ($fill > -1 && ($avflags & AVf_REAL)) {
warn sprintf("AV 0x%x[%d] = %s 0x%x\n",
$$av, $i++, class($el), $$el);
# my @names = map($_->save, @array);
# XXX Better ways to write loop?
# Perhaps svp[0] = ...; svp[1] = ...; svp[2] = ...;
# Perhaps I32 i = 0; svp[i++] = ...; svp[i++] = ...; svp[i++] = ...;
# micro optimization: op/pat.t ( and other code probably )
# has very large pads ( 20k/30k elements ) passing them to
# ->add is a performance bottleneck: passing them as a
# single string cuts runtime from 6min20sec to 40sec
# you want to keep this out of the no_split/split
# map("\t*svp++ = (SV*)$_;", @names),
foreach my $i ( 0..$#array ) {
$acc .= "\t*svp++ = (SV*)" . $array[$i]->save . ";\n\t";
"\tAV *av = (AV*)&sv_list[$sv_list_index];",
"\tav_extend(av, $fill);",
"\tsvp = AvARRAY(av);" );
$init->add("\tAvFILLp(av) = $fill;",
# we really added a lot of lines ( B::C::InitSection->add
# should really scan for \n, but that would slow
$init->inc_count( $#array );
$init->add("av_extend((AV*)&sv_list[$sv_list_index], $max);")
return savesym
($av, "(AV*)&sv_list[$sv_list_index]");
return $sym if defined $sym;
# A perl bug means HvPMROOT isn't altered when a PMOP is freed. Usually
# the only symptom is that sv_reset tries to reset the PMf_USED flag of
# a trashed op but we look at the trashed op_type and segfault.
#my $adpmroot = ${$hv->PMROOT};
$decl->add("static HV *hv$hv_index;");
# XXX Beware of weird package names containing double-quotes, \n, ...?
$init->add(qq[hv
$hv_index = gv_stashpv
("$name", TRUE
);]);
$init->add(sprintf("HvPMROOT(hv$hv_index) = (PMOP*)s\\_%x;",
$sym = savesym
($hv, "hv$hv_index");
# It's just an ordinary HV
$xpvhvsect->add(sprintf("0, 0, %d, 0, 0.0, 0, Nullhv, %d, 0, 0, 0",
$svsect->add(sprintf("&xpvhv_list[%d], %lu, 0x%x",
$xpvhvsect->index, $hv->REFCNT , $hv->FLAGS));
my $sv_list_index = $svsect->index;
my @contents = $hv->ARRAY;
for ($i = 1; $i < @contents; $i += 2) {
$contents[$i] = $contents[$i]->save;
$init->add("{", "\tHV *hv = (HV*)&sv_list[$sv_list_index];");
my ($key, $value) = splice(@contents, 0, 2);
$init->add(sprintf("\thv_store(hv, %s, %u, %s, %s);",
cstring
($key),length(pack "a*",$key),
# $init->add(sprintf("\thv_store(hv, %s, %u, %s, %s);",
# cstring($key),length($key),$value, 0));
return savesym
($hv, "(HV*)&sv_list[$sv_list_index]");
my( $io, $globname, @data ) = @_;
my $data = join '', @data;
# XXX using $DATA might clobber it!
my $sym = svref_2object
( \\$data )->save;
$init->add( split /\n/, <<CODE );
GV* gv = (GV*)gv_fetchpv( "$globname", TRUE, SVt_PV );
$init->add_eval( sprintf 'open(%s, "<", $%s)', $globname, $globname );
return $sym if defined $sym;
$pv = '' unless defined $pv;
$xpviosect->add(sprintf("0, %u, %u, %d, %s, 0, 0, 0, 0, 0, %d, %d, %d, %d, %s, Nullgv, %s, Nullgv, %s, Nullgv, %d, %s, 0x%x",
$len, $len+1, $io->IVX, $io->NVX, $io->LINES,
$io->PAGE, $io->PAGE_LEN, $io->LINES_LEFT,
cstring
($io->TOP_NAME), cstring
($io->FMT_NAME),
cstring
($io->BOTTOM_NAME), $io->SUBPROCESS,
cchar
($io->IoTYPE), $io->IoFLAGS));
$svsect->add(sprintf("&xpvio_list[%d], %lu, 0x%x",
$xpviosect->index, $io->REFCNT , $io->FLAGS));
$sym = savesym
($io, sprintf("(IO*)&sv_list[%d]", $svsect->index));
# deal with $x = *STDIN/STDOUT/STDERR{IO}
foreach ( qw(stdin stdout stderr) ) {
$io->IsSTD($_) and $perlio_func = $_;
$init->add( "IoIFP(${sym})=PerlIO_${perlio_func}();" );
$init->add( "IoOFP(${sym})=PerlIO_${perlio_func}();" );
foreach $field (qw(TOP_GV FMT_GV BOTTOM_GV)) {
$init->add(sprintf("Io$field($sym) = (GV*)s\\_%x;", $$fsym));
# This is where we catch an honest-to-goodness Nullsv (which gets
# blessed into B::SV explicitly) and any stray erroneous SVs.
confess
sprintf("cannot save that type of SV: %s (0x%x)\n",
my @sections = ($opsect, $unopsect, $binopsect, $logopsect, $condopsect,
$listopsect, $pmopsect, $svopsect, $padopsect, $pvopsect,
$loopsect, $copsect, $svsect, $xpvsect,
$xpvavsect, $xpvhvsect, $xpvcvsect, $xpvivsect, $xpvnvsect,
$xpvmgsect, $xpvlvsect, $xrvsect, $xpvbmsect, $xpviosect);
$symsect->output(\
*STDOUT
, "#define %s\n");
foreach $section (@sections) {
my $lines = $section->index + 1;
my $name = $section->name;
my $typename = ($name eq "xpvcv") ?
"XPVCV_or_similar" : uc($name);
print "Static $typename ${name}_list[$lines];\n";
# XXX hack for when Perl accesses PVX of GVs
print 'Static char emptystring[] = "\0";';
$decl->output(\
*STDOUT
, "%s\n");
foreach $section (@sections) {
my $lines = $section->index + 1;
my $name = $section->name;
my $typename = ($name eq "xpvcv") ?
"XPVCV_or_similar" : uc($name);
printf "static %s %s_list[%u] = {\n", $typename, $name, $lines;
$section->output(\
*STDOUT
, "\t{ %s }, /* %d */\n");
$init->output(\
*STDOUT
, "\t%s\n", $init_name );
warn "NULLOP count: $nullop_count\n";
sub output_declarations
{
#ifdef BROKEN_STATIC_REDECL
#endif /* BROKEN_STATIC_REDECL */
* Cribbed from cv.h with ANY (a union) replaced by void*.
* Some pre-Standard compilers can't cope with initialising unions. Ho hum.
char * xpv_pv; /* pointer to malloced string */
STRLEN xpv_cur; /* length of xp_pv as a C string */
STRLEN xpv_len; /* allocated size */
IV xof_off; /* integer value */
NV xnv_nv; /* numeric value, if any */
MAGIC* xmg_magic; /* magic for scalar array */
HV* xmg_stash; /* class package */
void (*xcv_xsub) (pTHX_ CV*);
long xcv_depth; /* >= 2 indicates recursive call */
print <<'EOT' if $] < 5.009;
struct perl_thread *xcv_owner; /* current owner thread */
#endif /* USE_5005THREADS */
U32 xcv_outside_seq; /* the COP sequence (at the point of our
* compilation) in the lexically enclosing
#define XPVCV_or_similar XPVCV
#endif /* BROKEN_UNION_INIT */
#define Nullany ANYINIT(0)
print "static GV *gv_list[$gv_index];\n" if $gv_index;
/* Workaround for mapstart: the only op which needs a different ppaddr */
#define Perl_pp_mapstart Perl_pp_grepstart
#define OP_MAPSTART OP_GREPSTART
#define XS_DynaLoader_boot_DynaLoader boot_DynaLoader
EXTERN_C void boot_DynaLoader (pTHX_ CV* cv);
static void xs_init (pTHX);
static void dl_init (pTHX);
static PerlInterpreter *my_perl;
my( $op_type, $num ) = @_;
my $op_list = $op_type."_list";
$init->add( split /\n/, <<EOT );
for( i = 0; i < ${num}; ++i )
${op_list}\[i].op_ppaddr = PL_ppaddr[INT2PTR(int,${op_list}\[i].op_ppaddr)];
my( $op_type, $num ) = @_;
my $op_list = $op_type."_list";
# for resons beyond imagination, MSVC5 considers pWARN_ALL non-const
$init->add( split /\n/, <<EOT );
for( i = 0; i < ${num}; ++i )
switch( (int)(${op_list}\[i].cop_warnings) )
${op_list}\[i].cop_warnings = pWARN_ALL;
${op_list}\[i].cop_warnings = pWARN_NONE;
${op_list}\[i].cop_warnings = pWARN_STD;
/* if USE_IMPLICIT_SYS, we need a 'real' exit */
main(int argc, char **argv, char **env)
PERL_SYS_INIT3(&argc,&argv,&env);
perl_construct( my_perl );
PL_perl_destruct_level = 0;
my $pad_len = regex_padav
->FILL + 1 - 1; # first is an avref
for( i = 0; i < $pad_len; ++i ) {
av_push( PL_regex_padav, newSViv(0) );
PL_regex_pad = AvARRAY( PL_regex_padav );
PL_cshlen = strlen(PL_cshname);
#ifdef ALLOW_PERL_OPTIONS
#endif /* ALLOW_PERL_OPTIONS */
Newx(fakeargv, argc + EXTRA_OPTIONS + 1, char *);
fakeargv[options_count] = "-T";
#ifndef ALLOW_PERL_OPTIONS
fakeargv[options_count] = "--";
#endif /* ALLOW_PERL_OPTIONS */
for (i = 1; i < argc; i++)
fakeargv[i + options_count - 1] = argv[i];
fakeargv[argc + options_count - 1] = 0;
exitstatus = perl_parse(my_perl, xs_init, argc + options_count - 1,
if( $use_perl_script_name ) {
$dollar_0 =~ s/\\/\\\\/g;
$dollar_0 = '"' . $dollar_0 . '"';
if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {/* $0 */
sv_setpv(tmpsv, ${dollar_0});
if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {/* $0 */
sv_setpv(tmpsv, argv[0]);
if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */
sv_setpv(tmpsv,"perl.exe");
/* PL_main_cv = PL_compcv; */
exitstatus = perl_init();
exitstatus = perl_run( my_perl );
perl_destruct( my_perl );
print "\n#ifdef USE_DYNAMIC_LOADING";
print qq/\n\tnewXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, file);/;
# delete $xsub{'DynaLoader'};
delete $xsub{'UNIVERSAL'};
print("/* bootstrapping code*/\n\tSAVETMPS;\n");
print("\ttarg=sv_newmortal();\n");
print "#ifdef USE_DYNAMIC_LOADING\n";
print "\tPUSHMARK(sp);\n";
print qq/\tXPUSHp("DynaLoader",strlen("DynaLoader"));\n/;
print "\tboot_DynaLoader(aTHX_ NULL);\n";
foreach my $stashname (keys %xsub){
if ($xsub{$stashname} !~ m/Dynamic/ ) {
my $stashxsub=$stashname;
print "\tPUSHMARK(sp);\n";
print qq/\tXPUSHp("$stashname",strlen("$stashname"));\n/;
print "\tboot_$stashxsub(aTHX_ NULL);\n";
print("\tFREETMPS;\n/* end bootstrapping code */\n");
print("/* Dynamicboot strapping code*/\n\tSAVETMPS;\n");
print("\ttarg=sv_newmortal();\n");
foreach my $stashname (@DynaLoader::dl_modules
) {
warn "Loaded $stashname\n";
if (exists($xsub{$stashname}) && $xsub{$stashname} =~ m/Dynamic/) {
my $stashxsub=$stashname;
print "\tPUSHMARK(sp);\n";
print qq/\tXPUSHp("$stashname",/,length($stashname),qq/);\n/;
print "#ifdef USE_DYNAMIC_LOADING\n";
warn "bootstrapping $stashname added to xs_init\n";
if( $xsub{$stashname} eq 'Dynamic' ) {
print qq/\tperl_call_method("bootstrap",G_DISCARD);\n/;
print qq/\tperl_call_pv("XSLoader::load",G_DISCARD);\n/;
print "\tboot_$stashxsub(aTHX_ NULL);\n";
print("\tFREETMPS;\n/* end Dynamic bootstrapping code */\n");
warn "----Symbol table:\n";
while (($sym, $val) = each %symtable) {
warn "---End of symbol table\n";
svref_2object
($sv)->save;
my $package=$gv->STASH->NAME;
my $fullname = $gv->STASH->NAME . "::" . $gv->NAME;
# We may be looking at this package just because it is a branch in the
# symbol table which is on the path to a package which we need to save
# e.g. this is 'Getopt' and we need to save 'Getopt::Long'
return unless ($unused_sub_packages{$package});
return unless ($$cv || $$av || $$sv || $$hv);
unless ($unused_sub_packages{$package})
$unused_sub_packages{$package} = 1;
if (defined @
{$package.'::ISA'})
foreach my $isa (@
{$package.'::ISA'})
if ($isa eq 'DynaLoader')
unless (defined(&{$package.'::bootstrap'}))
warn "Forcing bootstrap of $package\n";
eval { $package->bootstrap };
unless ($unused_sub_packages{$isa})
warn "$isa saved (it is in $package\'s \@ISA)\n";
return $unused_sub_packages{$package} = 0 if ($package =~ /::::/); # skip ::::ISA::CACHE etc.
# warn "Considering $package\n";#debug
foreach my $u (grep($unused_sub_packages{$_},keys %unused_sub_packages))
# If this package is a prefix to something we are saving, traverse it
# but do not mark it for saving if it is not already
# e.g. to get to Getopt::Long we need to traverse Getopt but need
return 1 if ($u =~ /^$package\:\:/);
if (exists $unused_sub_packages{$package})
# warn "Cached $package is ".$unused_sub_packages{$package}."\n";
delete_unsaved_hashINC
($package) unless $unused_sub_packages{$package} ;
return $unused_sub_packages{$package};
# Omit the packages which we use (and which cause grief
# because of fancy "goto &$AUTOLOAD" stuff).
# XXX Surely there must be a nicer way to do this.
if ($package eq "FileHandle" || $package eq "Config" ||
$package eq "SelectSaver" || $package =~/^(B|IO)::/)
delete_unsaved_hashINC
($package);
return $unused_sub_packages{$package} = 0;
# Now see if current package looks like an OO class this is probably too strong.
foreach my $m (qw(new DESTROY TIESCALAR TIEARRAY TIEHASH TIEHANDLE))
if (UNIVERSAL
::can
($package, $m))
warn "$package has method $m: saving package\n";#debug
return mark_package
($package);
delete_unsaved_hashINC
($package);
return $unused_sub_packages{$package} = 0;
sub delete_unsaved_hashINC
{
$packname =~ s/\:\:/\//g
;
# warn "deleting $packname" if $INC{$packname} ;# debug
my ($symref, $recurse, $prefix) = @_;
$prefix = '' unless defined $prefix;
while (($sym, $ref) = each %$symref)
if ($sym ne "main::" && $sym ne "<none>::" && &$recurse($sym))
walkpackages
(\
%glob, $recurse, $sym);
walkpackages
(\
%{"main::"}, sub { should_save
($_[0]); return 1 });
walksymtable
(\
%{"main::"}, "savecv", \
&should_save
);
my $curpad_nam = (comppadlist
->ARRAY)[0]->save;
my $curpad_sym = (comppadlist
->ARRAY)[1]->save;
my $inc_hv = svref_2object
(\
%INC)->save;
my $inc_av = svref_2object
(\
@INC)->save;
my $amagic_generate= amagic_generation
;
$init->add( "PL_curpad = AvARRAY($curpad_sym);",
"GvHV(PL_incgv) = $inc_hv;",
"GvAV(PL_incgv) = $inc_av;",
"av_store(CvPADLIST(PL_main_cv),0,SvREFCNT_inc($curpad_nam));",
"av_store(CvPADLIST(PL_main_cv),1,SvREFCNT_inc($curpad_sym));",
"PL_amagic_generation= $amagic_generate;" );
sub descend_marked_unused
{
foreach my $pack (keys %unused_sub_packages)
# this is mainly for the test suite
my $warner = $SIG{__WARN__
};
local $SIG{__WARN__
} = sub { print STDERR
@_ };
warn "Starting compile\n";
seek(STDOUT
,0,0); #exclude print statements in BEGIN{} into output
walkoptree
(main_root
, "save");
warn "done main optree, walking symtable for extras\n" if $debug_cv;
# XSLoader was used, force saving of XSLoader::load
my $cv = svref_2object
( \
&XSLoader
::load
);
# save %SIG ( in case it was set in a BEGIN block )
local $SIG{__WARN__
} = $warner;
$init->add("{", "\tHV* hv = get_hv(\"main::SIG\",1);" );
foreach my $k ( keys %SIG ) {
next unless ref $SIG{$k};
my $cv = svref_2object
( \
$SIG{$k} );
$init->add('{',sprintf 'SV* sv = (SV*)%s;', $sv );
$init->add(sprintf("\thv_store(hv, %s, %u, %s, %s);",
cstring
($k),length(pack "a*",$k),
$init->add('mg_set(sv);','}');
$init->add( sprintf " PL_dowarn = ( %s ) ? G_WARN_ON : G_WARN_OFF;", $^W
);
my $init_av = init_av
->save;
my $end_av = end_av
->save;
$init->add(sprintf("PL_main_root = s\\_%x;", ${main_root
()}),
sprintf("PL_main_start = s\\_%x;", ${main_start
()}),
"PL_initav = (AV *) $init_av;",
"PL_endav = (AV*) $end_av;");
# init op addrs ( must be the last action, otherwise
# some ops might not be initialized
foreach my $i ( @op_sections ) {
next unless $section->index >= 0;
init_op_addr
( $section->name, $section->index + 1);
init_op_warn
( $copsect->name, $copsect->index + 1)
if $optimize_warn_sv && $copsect->index >= 0;
my @sections = (decl
=> \
$decl, sym
=> \
$symsect,
binop
=> \
$binopsect, condop
=> \
$condopsect,
cop
=> \
$copsect, padop
=> \
$padopsect,
listop
=> \
$listopsect, logop
=> \
$logopsect,
loop => \
$loopsect, op
=> \
$opsect, pmop
=> \
$pmopsect,
pvop
=> \
$pvopsect, svop
=> \
$svopsect, unop
=> \
$unopsect,
sv
=> \
$svsect, xpv
=> \
$xpvsect, xpvav
=> \
$xpvavsect,
xpvhv
=> \
$xpvhvsect, xpvcv
=> \
$xpvcvsect,
xpviv
=> \
$xpvivsect, xpvnv
=> \
$xpvnvsect,
xpvmg
=> \
$xpvmgsect, xpvlv
=> \
$xpvlvsect,
xrv
=> \
$xrvsect, xpvbm
=> \
$xpvbmsect,
while (($name, $sectref) = splice(@sections, 0, 2)) {
$$sectref = new B
::C
::Section
$name, \
%symtable, 0;
$init = new B
::C
::InitSection
'init', \
%symtable, 0;
$unused_sub_packages{$arg} = $val;
my ($option, $opt, $arg);
my %option_map = ( 'cog' => \
$pv_copy_on_grow,
'save-data' => \
$save_data_fh,
'ppaddr' => \
$optimize_ppaddr,
'warn-sv' => \
$optimize_warn_sv,
'use-script-name' => \
$use_perl_script_name,
'save-sig-hash' => \
$save_sig,
my %optimization_map = ( 0 => [ qw() ], # special case
2 => [ qw(-fwarn-sv -fppaddr) ],
while ($option = shift @options) {
if ($option =~ /^-(.)(.*)/) {
unshift @options, $option;
if ($opt eq "-" && $arg eq "-") {
$warn_undefined_syms = 1;
foreach $arg (split(//, $arg)) {
warn "ignoring unknown debug option: $arg\n";
open(STDOUT
, ">$arg") or return "$arg: $!\n";
my $no = defined($1) && $1 eq 'no-';
if( exists $option_map{$arg} ) {
${$option_map{$arg}} = !$no;
die "Invalid optimization '$arg'";
foreach my $i ( 1 .. $arg ) {
push @opt, @
{$optimization_map{$i}}
if exists $optimization_map{$i};
push @eval_at_startup, $arg;
foreach my $i ( @eval_at_startup ) {
foreach $objname (@options) {
eval "save_object(\\$objname)";
return sub { save_main
() };
B::C - Perl compiler's C backend
perl -MO=C[,OPTIONS] foo.pl
This compiler backend takes Perl source and generates C source code
corresponding to the internal structures that perl uses to run
your program. When the generated C source is compiled and run, it
cuts out the time which perl would have taken to load and parse
your program into its internal semi-compiled form. That means that
compiling with this backend will not help improve the runtime
execution speed of your program but may improve the start-up time.
Depending on the environment in which your program runs this may be
either a help or a hindrance.
If there are any non-option arguments, they are taken to be
names of objects to be saved (probably doesn't work properly yet).
Without extra arguments, it saves the main program.
Output to filename instead of STDOUT
Verbose compilation (currently gives a few compilation statistics).
Force apparently unused subs from package Packname to be compiled.
This allows programs to use eval "foo()" even when sub foo is never
seen to be used at compile time. The down side is that any subs which
really are never used also have code generated. This option is
necessary, for example, if you have a signal handler foo which you
initialise with C<$SIG{BAR} = "foo">. A better fix, though, is just
to change it to C<$SIG{BAR} = \&foo>. You can have multiple B<-u>
options. The compiler tries to figure out which packages may possibly
have subs in which need compiling but the current version doesn't do
it very well. In particular, it is confused by nested packages (i.e.
of the form C<A::B>) where package C<A> does not contain any subs.
Debug options (concatenated or separate flags like C<perl -D>).
OPs, prints each OP as it's processed
COPs, prints COPs as processed (incl. file & line num)
prints AV information on saving
prints CV information on saving
prints MAGIC information on saving
Force options/optimisations on or off one at a time. You can explicitly
disable an option using B<-fno-option>. All options default to
Copy-on-grow: PVs declared and initialised statically.
Save package::DATA filehandles ( only available with PerlIO ).
Optimize the initialization of op_ppaddr.
Optimize the initialization of cop_warnings.
=item B<-fuse-script-name>
Use the script name instead of the program name as $0.
Save compile-time modifications to the %SIG hash.
Optimisation level (n = 0, 1, 2, ...). B<-O> means B<-O1>.
Disable all optimizations.
Enable B<-fppaddr>, B<-fwarn-sv>.
Some C compilers impose an arbitrary limit on the length of string
constants (e.g. 2048 characters for Microsoft Visual C++). The
B<-llimit> options tells the C backend not to generate string literals
perl -MO=C,-ofoo.c foo.pl
perl cc_harness -o foo foo.c
Note that C<cc_harness> lives in the C<B> subdirectory of your perl
library directory. The utility called C<perlcc> may also be used to
help make use of this compiler.
perl -MO=C,-v,-DcA,-l2048 bar.pl > /dev/null
Plenty. Current status: experimental.
Malcolm Beattie, C<mbeattie@sable.ox.ac.uk>