You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1657 lines
50 KiB
1657 lines
50 KiB
# C.pm
|
|
#
|
|
# 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.
|
|
#
|
|
package B::C::Section;
|
|
use B ();
|
|
use base B::Section;
|
|
|
|
sub new
|
|
{
|
|
my $class = shift;
|
|
my $o = $class->SUPER::new(@_);
|
|
push(@$o,[]);
|
|
return $o;
|
|
}
|
|
|
|
sub add
|
|
{
|
|
my $section = shift;
|
|
push(@{$section->[-1]},@_);
|
|
}
|
|
|
|
sub index
|
|
{
|
|
my $section = shift;
|
|
return scalar(@{$section->[-1]})-1;
|
|
}
|
|
|
|
sub output
|
|
{
|
|
my ($section, $fh, $format) = @_;
|
|
my $sym = $section->symtable || {};
|
|
my $default = $section->default;
|
|
foreach (@{$section->[-1]})
|
|
{
|
|
s{(s\\_[0-9a-f]+)}{ exists($sym->{$1}) ? $sym->{$1} : $default; }ge;
|
|
printf $fh $format, $_;
|
|
}
|
|
}
|
|
|
|
package B::C;
|
|
use Exporter ();
|
|
@ISA = qw(Exporter);
|
|
@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 opnumber amagic_generation
|
|
AVf_REAL HEf_SVKEY);
|
|
use B::Asmdata qw(@specialsv_name);
|
|
|
|
use FileHandle;
|
|
use Carp;
|
|
use strict;
|
|
use Config;
|
|
|
|
my $hv_index = 0;
|
|
my $gv_index = 0;
|
|
my $re_index = 0;
|
|
my $pv_index = 0;
|
|
my $anonsub_index = 0;
|
|
my $initsub_index = 0;
|
|
|
|
my %symtable;
|
|
my %xsub;
|
|
my $warn_undefined_syms;
|
|
my $verbose;
|
|
my %unused_sub_packages;
|
|
my $nullop_count;
|
|
my $pv_copy_on_grow = 0;
|
|
my ($debug_cops, $debug_av, $debug_cv, $debug_mg);
|
|
my $max_string_len;
|
|
|
|
my @threadsv_names;
|
|
BEGIN {
|
|
@threadsv_names = threadsv_names();
|
|
}
|
|
|
|
# Code sections
|
|
my ($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 );
|
|
|
|
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");
|
|
return objsym($start);
|
|
}
|
|
|
|
# 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 $op_seq = 65535;
|
|
|
|
# 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 $OP_THREADSV = opnumber('threadsv');
|
|
|
|
sub savesym {
|
|
my ($obj, $value) = @_;
|
|
my $sym = sprintf("s\\_%x", $$obj);
|
|
$symtable{$sym} = $value;
|
|
}
|
|
|
|
sub objsym {
|
|
my $obj = shift;
|
|
return $symtable{sprintf("s\\_%x", $$obj)};
|
|
}
|
|
|
|
sub getsym {
|
|
my $sym = shift;
|
|
my $value;
|
|
|
|
return 0 if $sym eq "sym_0"; # special case
|
|
$value = $symtable{$sym};
|
|
if (defined($value)) {
|
|
return $value;
|
|
} else {
|
|
warn "warning: undefined symbol $sym\n" if $warn_undefined_syms;
|
|
return "UNUSED";
|
|
}
|
|
}
|
|
|
|
sub savepv {
|
|
my $pv = shift;
|
|
$pv = '' unless defined $pv; # Is this sane ?
|
|
my $pvsym = 0;
|
|
my $pvmax = 0;
|
|
if ($pv_copy_on_grow) {
|
|
my $cstring = cstring($pv);
|
|
if ($cstring ne "0") { # sic
|
|
$pvsym = sprintf("pv%d", $pv_index++);
|
|
$decl->add(sprintf("static char %s[] = %s;", $pvsym, $cstring));
|
|
}
|
|
} else {
|
|
$pvmax = length($pv) + 1;
|
|
}
|
|
return ($pvsym, $pvmax);
|
|
}
|
|
|
|
sub B::OP::save {
|
|
my ($op, $level) = @_;
|
|
my $sym = objsym($op);
|
|
return $sym if defined $sym;
|
|
my $type = $op->type;
|
|
$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(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x",
|
|
${$op->next}, ${$op->sibling}, $op->targ,
|
|
$type, $op_seq, $op->flags, $op->private));
|
|
my $ix = $opsect->index;
|
|
$init->add(sprintf("op_list[$ix].op_ppaddr = %s;", $op->ppaddr));
|
|
savesym($op, "&op_list[$ix]");
|
|
}
|
|
|
|
sub B::FAKEOP::new {
|
|
my ($class, %objdata) = @_;
|
|
bless \%objdata, $class;
|
|
}
|
|
|
|
sub B::FAKEOP::save {
|
|
my ($op, $level) = @_;
|
|
$opsect->add(sprintf("%s, %s, NULL, %u, %u, %u, 0x%x, 0x%x",
|
|
$op->next, $op->sibling, $op->targ,
|
|
$op->type, $op_seq, $op->flags, $op->private));
|
|
my $ix = $opsect->index;
|
|
$init->add(sprintf("op_list[$ix].op_ppaddr = %s;", $op->ppaddr));
|
|
return "&op_list[$ix]";
|
|
}
|
|
|
|
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 { $_[0]->{private} || 0 }
|
|
|
|
sub B::UNOP::save {
|
|
my ($op, $level) = @_;
|
|
my $sym = objsym($op);
|
|
return $sym if defined $sym;
|
|
$unopsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, s\\_%x",
|
|
${$op->next}, ${$op->sibling},
|
|
$op->targ, $op->type, $op_seq, $op->flags,
|
|
$op->private, ${$op->first}));
|
|
my $ix = $unopsect->index;
|
|
$init->add(sprintf("unop_list[$ix].op_ppaddr = %s;", $op->ppaddr));
|
|
savesym($op, "(OP*)&unop_list[$ix]");
|
|
}
|
|
|
|
sub B::BINOP::save {
|
|
my ($op, $level) = @_;
|
|
my $sym = objsym($op);
|
|
return $sym if defined $sym;
|
|
$binopsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x",
|
|
${$op->next}, ${$op->sibling},
|
|
$op->targ, $op->type, $op_seq, $op->flags,
|
|
$op->private, ${$op->first}, ${$op->last}));
|
|
my $ix = $binopsect->index;
|
|
$init->add(sprintf("binop_list[$ix].op_ppaddr = %s;", $op->ppaddr));
|
|
savesym($op, "(OP*)&binop_list[$ix]");
|
|
}
|
|
|
|
sub B::LISTOP::save {
|
|
my ($op, $level) = @_;
|
|
my $sym = objsym($op);
|
|
return $sym if defined $sym;
|
|
$listopsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x",
|
|
${$op->next}, ${$op->sibling},
|
|
$op->targ, $op->type, $op_seq, $op->flags,
|
|
$op->private, ${$op->first}, ${$op->last}));
|
|
my $ix = $listopsect->index;
|
|
$init->add(sprintf("listop_list[$ix].op_ppaddr = %s;", $op->ppaddr));
|
|
savesym($op, "(OP*)&listop_list[$ix]");
|
|
}
|
|
|
|
sub B::LOGOP::save {
|
|
my ($op, $level) = @_;
|
|
my $sym = objsym($op);
|
|
return $sym if defined $sym;
|
|
$logopsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x",
|
|
${$op->next}, ${$op->sibling},
|
|
$op->targ, $op->type, $op_seq, $op->flags,
|
|
$op->private, ${$op->first}, ${$op->other}));
|
|
my $ix = $logopsect->index;
|
|
$init->add(sprintf("logop_list[$ix].op_ppaddr = %s;", $op->ppaddr));
|
|
savesym($op, "(OP*)&logop_list[$ix]");
|
|
}
|
|
|
|
sub B::LOOP::save {
|
|
my ($op, $level) = @_;
|
|
my $sym = objsym($op);
|
|
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\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, s\\_%x, s\\_%x, s\\_%x",
|
|
${$op->next}, ${$op->sibling},
|
|
$op->targ, $op->type, $op_seq, $op->flags,
|
|
$op->private, ${$op->first}, ${$op->last},
|
|
${$op->redoop}, ${$op->nextop},
|
|
${$op->lastop}));
|
|
my $ix = $loopsect->index;
|
|
$init->add(sprintf("loop_list[$ix].op_ppaddr = %s;", $op->ppaddr));
|
|
savesym($op, "(OP*)&loop_list[$ix]");
|
|
}
|
|
|
|
sub B::PVOP::save {
|
|
my ($op, $level) = @_;
|
|
my $sym = objsym($op);
|
|
return $sym if defined $sym;
|
|
$pvopsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, %s",
|
|
${$op->next}, ${$op->sibling},
|
|
$op->targ, $op->type, $op_seq, $op->flags,
|
|
$op->private, cstring($op->pv)));
|
|
my $ix = $pvopsect->index;
|
|
$init->add(sprintf("pvop_list[$ix].op_ppaddr = %s;", $op->ppaddr));
|
|
savesym($op, "(OP*)&pvop_list[$ix]");
|
|
}
|
|
|
|
sub B::SVOP::save {
|
|
my ($op, $level) = @_;
|
|
my $sym = objsym($op);
|
|
return $sym if defined $sym;
|
|
my $svsym = $op->sv->save;
|
|
$svopsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, Nullsv",
|
|
${$op->next}, ${$op->sibling},
|
|
$op->targ, $op->type, $op_seq, $op->flags,
|
|
$op->private));
|
|
my $ix = $svopsect->index;
|
|
$init->add(sprintf("svop_list[$ix].op_ppaddr = %s;", $op->ppaddr));
|
|
$init->add("svop_list[$ix].op_sv = (SV*)$svsym;");
|
|
savesym($op, "(OP*)&svop_list[$ix]");
|
|
}
|
|
|
|
sub B::PADOP::save {
|
|
my ($op, $level) = @_;
|
|
my $sym = objsym($op);
|
|
return $sym if defined $sym;
|
|
$padopsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, 0",
|
|
${$op->next}, ${$op->sibling},
|
|
$op->targ, $op->type, $op_seq, $op->flags,
|
|
$op->private));
|
|
$init->add(sprintf("padop_list[%d].op_ppaddr = %s;", $padopsect->index, $op->ppaddr));
|
|
my $ix = $padopsect->index;
|
|
$init->add(sprintf("padop_list[$ix].op_padix = %ld;", $op->padix));
|
|
savesym($op, "(OP*)&padop_list[$ix]");
|
|
}
|
|
|
|
sub B::COP::save {
|
|
my ($op, $level) = @_;
|
|
my $sym = objsym($op);
|
|
return $sym if defined $sym;
|
|
warn sprintf("COP: line %d file %s\n", $op->line, $op->file)
|
|
if $debug_cops;
|
|
$copsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, %s, NULL, NULL, %u, %d, %u",
|
|
${$op->next}, ${$op->sibling},
|
|
$op->targ, $op->type, $op_seq, $op->flags,
|
|
$op->private, cstring($op->label), $op->cop_seq,
|
|
$op->arybase, $op->line));
|
|
my $ix = $copsect->index;
|
|
$init->add(sprintf("cop_list[$ix].op_ppaddr = %s;", $op->ppaddr));
|
|
$init->add(sprintf("CopFILE_set(&cop_list[$ix], %s);", cstring($op->file)),
|
|
sprintf("CopSTASHPV_set(&cop_list[$ix], %s);", cstring($op->stashpv)));
|
|
savesym($op, "(OP*)&cop_list[$ix]");
|
|
}
|
|
|
|
sub B::PMOP::save {
|
|
my ($op, $level) = @_;
|
|
my $sym = objsym($op);
|
|
return $sym if defined $sym;
|
|
my $replroot = $op->pmreplroot;
|
|
my $replstart = $op->pmreplstart;
|
|
my $replrootfield = sprintf("s\\_%x", $$replroot);
|
|
my $replstartfield = sprintf("s\\_%x", $$replstart);
|
|
my $gvsym;
|
|
my $ppaddr = $op->ppaddr;
|
|
if ($$replroot) {
|
|
# OP_PUSHRE (a mutated version of OP_MATCH for the regexp
|
|
# argument to a split) stores a GV in op_pmreplroot instead
|
|
# of a substitution syntax tree. We don't want to walk that...
|
|
if ($op->name eq "pushre") {
|
|
$gvsym = $replroot->save;
|
|
# warn "PMOP::save saving a pp_pushre with GV $gvsym\n"; # debug
|
|
$replrootfield = 0;
|
|
} else {
|
|
$replstartfield = saveoptree("*ignore*", $replroot, $replstart);
|
|
}
|
|
}
|
|
# pmnext handling is broken in perl itself, I think. Bad op_pmnext
|
|
# fields aren't noticed in perl's runtime (unless you try reset) but we
|
|
# segfault when trying to dereference it to find op->op_pmnext->op_type
|
|
$pmopsect->add(sprintf("s\\_%x, s\\_%x, NULL, %u, %u, %u, 0x%x, 0x%x, s\\_%x, s\\_%x, %s, %s, 0, 0, 0x%x, 0x%x",
|
|
${$op->next}, ${$op->sibling}, $op->targ,
|
|
$op->type, $op_seq, $op->flags, $op->private,
|
|
${$op->first}, ${$op->last},
|
|
$replrootfield, $replstartfield,
|
|
$op->pmflags, $op->pmpermflags,));
|
|
my $pm = sprintf("pmop_list[%d]", $pmopsect->index);
|
|
$init->add(sprintf("$pm.op_ppaddr = %s;", $ppaddr));
|
|
my $re = $op->precomp;
|
|
if (defined($re)) {
|
|
my $resym = sprintf("re%d", $re_index++);
|
|
$decl->add(sprintf("static char *$resym = %s;", cstring($re)));
|
|
$init->add(sprintf("$pm.op_pmregexp = pregcomp($resym, $resym + %u, &$pm);",
|
|
length($re)));
|
|
}
|
|
if ($gvsym) {
|
|
$init->add("$pm.op_pmreplroot = (OP*)$gvsym;");
|
|
}
|
|
savesym($op, "(OP*)&$pm");
|
|
}
|
|
|
|
sub B::SPECIAL::save {
|
|
my ($sv) = @_;
|
|
# special case: $$sv is not the address but an index into specialsv_list
|
|
# warn "SPECIAL::save specialsv $$sv\n"; # debug
|
|
my $sym = $specialsv_name[$$sv];
|
|
if (!defined($sym)) {
|
|
confess "unknown specialsv index $$sv passed to B::SPECIAL::save";
|
|
}
|
|
return $sym;
|
|
}
|
|
|
|
sub B::OBJECT::save {}
|
|
|
|
sub B::NULL::save {
|
|
my ($sv) = @_;
|
|
my $sym = objsym($sv);
|
|
return $sym if defined $sym;
|
|
# warn "Saving SVt_NULL SV\n"; # debug
|
|
# debug
|
|
if ($$sv == 0) {
|
|
warn "NULL::save for sv = 0 called from @{[(caller(1))[3]]}\n";
|
|
return savesym($sv, "Nullsv /* XXX */");
|
|
}
|
|
$svsect->add(sprintf("0, %u, 0x%x", $sv->REFCNT , $sv->FLAGS));
|
|
return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
|
|
}
|
|
|
|
sub B::IV::save {
|
|
my ($sv) = @_;
|
|
my $sym = objsym($sv);
|
|
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]", $svsect->index));
|
|
}
|
|
|
|
sub B::NV::save {
|
|
my ($sv) = @_;
|
|
my $sym = objsym($sv);
|
|
return $sym if defined $sym;
|
|
my $val= $sv->NVX;
|
|
$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]", $svsect->index));
|
|
}
|
|
|
|
sub savepvn {
|
|
my ($dest,$pv) = @_;
|
|
my @res;
|
|
if (defined $max_string_len && length($pv) > $max_string_len) {
|
|
push @res, sprintf("New(0,%s,%u,char);", $dest, length($pv)+1);
|
|
my $offset = 0;
|
|
while (length $pv) {
|
|
my $str = substr $pv, 0, $max_string_len, '';
|
|
push @res, sprintf("Copy(%s,$dest+$offset,%u,char);",
|
|
cstring($str), length($str));
|
|
$offset += length $str;
|
|
}
|
|
push @res, sprintf("%s[%u] = '\\0';", $dest, $offset);
|
|
}
|
|
else {
|
|
push @res, sprintf("%s = savepvn(%s, %u);", $dest,
|
|
cstring($pv), length($pv));
|
|
}
|
|
return @res;
|
|
}
|
|
|
|
sub B::PVLV::save {
|
|
my ($sv) = @_;
|
|
my $sym = objsym($sv);
|
|
return $sym if defined $sym;
|
|
my $pv = $sv->PV;
|
|
my $len = length($pv);
|
|
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 , $sv->FLAGS));
|
|
if (!$pv_copy_on_grow) {
|
|
$init->add(savepvn(sprintf("xpvlv_list[%d].xpv_pv",
|
|
$xpvlvsect->index), $pv));
|
|
}
|
|
$sv->save_magic;
|
|
return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
|
|
}
|
|
|
|
sub B::PVIV::save {
|
|
my ($sv) = @_;
|
|
my $sym = objsym($sv);
|
|
return $sym if defined $sym;
|
|
my $pv = $sv->PV;
|
|
my $len = length($pv);
|
|
my ($pvsym, $pvmax) = savepv($pv);
|
|
$xpvivsect->add(sprintf("%s, %u, %u, %d", $pvsym, $len, $pvmax, $sv->IVX));
|
|
$svsect->add(sprintf("&xpviv_list[%d], %u, 0x%x",
|
|
$xpvivsect->index, $sv->REFCNT , $sv->FLAGS));
|
|
if (!$pv_copy_on_grow) {
|
|
$init->add(savepvn(sprintf("xpviv_list[%d].xpv_pv",
|
|
$xpvivsect->index), $pv));
|
|
}
|
|
return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
|
|
}
|
|
|
|
sub B::PVNV::save {
|
|
my ($sv) = @_;
|
|
my $sym = objsym($sv);
|
|
return $sym if defined $sym;
|
|
my $pv = $sv->PV;
|
|
$pv = '' unless defined $pv;
|
|
my $len = length($pv);
|
|
my ($pvsym, $pvmax) = savepv($pv);
|
|
my $val= $sv->NVX;
|
|
$val .= '.00' if $val =~ /^-?\d+$/;
|
|
$xpvnvsect->add(sprintf("%s, %u, %u, %d, %s",
|
|
$pvsym, $len, $pvmax, $sv->IVX, $val));
|
|
$svsect->add(sprintf("&xpvnv_list[%d], %lu, 0x%x",
|
|
$xpvnvsect->index, $sv->REFCNT , $sv->FLAGS));
|
|
if (!$pv_copy_on_grow) {
|
|
$init->add(savepvn(sprintf("xpvnv_list[%d].xpv_pv",
|
|
$xpvnvsect->index), $pv));
|
|
}
|
|
return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
|
|
}
|
|
|
|
sub B::BM::save {
|
|
my ($sv) = @_;
|
|
my $sym = objsym($sv);
|
|
return $sym if defined $sym;
|
|
my $pv = $sv->PV . "\0" . $sv->TABLE;
|
|
my $len = length($pv);
|
|
$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));
|
|
$sv->save_magic;
|
|
$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]", $svsect->index));
|
|
}
|
|
|
|
sub B::PV::save {
|
|
my ($sv) = @_;
|
|
my $sym = objsym($sv);
|
|
return $sym if defined $sym;
|
|
my $pv = $sv->PV;
|
|
my $len = length($pv);
|
|
my ($pvsym, $pvmax) = savepv($pv);
|
|
$xpvsect->add(sprintf("%s, %u, %u", $pvsym, $len, $pvmax));
|
|
$svsect->add(sprintf("&xpv_list[%d], %lu, 0x%x",
|
|
$xpvsect->index, $sv->REFCNT , $sv->FLAGS));
|
|
if (!$pv_copy_on_grow) {
|
|
$init->add(savepvn(sprintf("xpv_list[%d].xpv_pv",
|
|
$xpvsect->index), $pv));
|
|
}
|
|
return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
|
|
}
|
|
|
|
sub B::PVMG::save {
|
|
my ($sv) = @_;
|
|
my $sym = objsym($sv);
|
|
return $sym if defined $sym;
|
|
my $pv = $sv->PV;
|
|
my $len = length($pv);
|
|
my ($pvsym, $pvmax) = savepv($pv);
|
|
$xpvmgsect->add(sprintf("%s, %u, %u, %d, %s, 0, 0",
|
|
$pvsym, $len, $pvmax, $sv->IVX, $sv->NVX));
|
|
$svsect->add(sprintf("&xpvmg_list[%d], %lu, 0x%x",
|
|
$xpvmgsect->index, $sv->REFCNT , $sv->FLAGS));
|
|
if (!$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));
|
|
$sv->save_magic;
|
|
return $sym;
|
|
}
|
|
|
|
sub B::PVMG::save_magic {
|
|
my ($sv) = @_;
|
|
#warn sprintf("saving magic for %s (0x%x)\n", class($sv), $$sv); # debug
|
|
my $stash = $sv->SvSTASH;
|
|
$stash->save;
|
|
if ($$stash) {
|
|
warn sprintf("xmg_stash = %s (0x%x)\n", $stash->NAME, $$stash)
|
|
if $debug_mg;
|
|
# XXX Hope stash is already going to be saved.
|
|
$init->add(sprintf("SvSTASH(s\\_%x) = s\\_%x;", $$sv, $$stash));
|
|
}
|
|
my @mgchain = $sv->MAGIC;
|
|
my ($mg, $type, $obj, $ptr,$len,$ptrsv);
|
|
foreach $mg (@mgchain) {
|
|
$type = $mg->TYPE;
|
|
$obj = $mg->OBJ;
|
|
$ptr = $mg->PTR;
|
|
$len=$mg->LENGTH;
|
|
if ($debug_mg) {
|
|
warn sprintf("magic %s (0x%x), obj %s (0x%x), type %s, ptr %s\n",
|
|
class($sv), $$sv, class($obj), $$obj,
|
|
cchar($type), cstring($ptr));
|
|
}
|
|
$obj->save;
|
|
if ($len == HEf_SVKEY){
|
|
#The pointer is an SV*
|
|
$ptrsv=svref_2object($ptr)->save;
|
|
$init->add(sprintf("sv_magic((SV*)s\\_%x, (SV*)s\\_%x, %s,(char *) %s, %d);",
|
|
$$sv, $$obj, cchar($type),$ptrsv,$len));
|
|
}else{
|
|
$init->add(sprintf("sv_magic((SV*)s\\_%x, (SV*)s\\_%x, %s, %s, %d);",
|
|
$$sv, $$obj, cchar($type),cstring($ptr),$len));
|
|
}
|
|
}
|
|
}
|
|
|
|
sub B::RV::save {
|
|
my ($sv) = @_;
|
|
my $sym = objsym($sv);
|
|
return $sym if defined $sym;
|
|
my $rv = $sv->RV->save;
|
|
$rv =~ s/^\([AGHS]V\s*\*\)\s*(\&sv_list.*)$/$1/;
|
|
$xrvsect->add($rv);
|
|
$svsect->add(sprintf("&xrv_list[%d], %lu, 0x%x",
|
|
$xrvsect->index, $sv->REFCNT , $sv->FLAGS));
|
|
return savesym($sv, sprintf("&sv_list[%d]", $svsect->index));
|
|
}
|
|
|
|
sub try_autoload {
|
|
my ($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.
|
|
no strict 'refs';
|
|
my $isa = \@{"$cvstashname\::ISA"};
|
|
if (grep($_ eq "AutoLoader", @$isa)) {
|
|
warn "Forcing immediate load of sub derived from AutoLoader\n";
|
|
# Tweaked version of AutoLoader::AUTOLOAD
|
|
my $dir = $cvstashname;
|
|
$dir =~ s(::)(/)g;
|
|
eval { require "auto/$dir/$cvname.al" };
|
|
if ($@) {
|
|
warn qq(failed require "auto/$dir/$cvname.al": $@\n);
|
|
return 0;
|
|
} else {
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
sub Dummy_initxs{};
|
|
sub B::CV::save {
|
|
my ($cv) = @_;
|
|
my $sym = objsym($cv);
|
|
if (defined($sym)) {
|
|
# warn sprintf("CV 0x%x already saved as $sym\n", $$cv); # debug
|
|
return $sym;
|
|
}
|
|
# Reserve a place in svsect and xpvcvsect and record indices
|
|
my $gv = $cv->GV;
|
|
my ($cvname, $cvstashname);
|
|
if ($$gv){
|
|
$cvname = $gv->NAME;
|
|
$cvstashname = $gv->STASH->NAME;
|
|
}
|
|
my $root = $cv->ROOT;
|
|
my $cvxsub = $cv->XSUB;
|
|
#INIT is removed from the symbol table, so this call must come
|
|
# from PL_initav->save. Re-bootstrapping will push INIT back in
|
|
# so nullop should be sent.
|
|
if ($cvxsub && ($cvname ne "INIT")) {
|
|
my $egv = $gv->EGV;
|
|
my $stashname = $egv->STASH->NAME;
|
|
if ($cvname eq "bootstrap")
|
|
{
|
|
my $file = $gv->FILE;
|
|
$decl->add("/* bootstrap $file */");
|
|
warn "Bootstrap $stashname $file\n";
|
|
$xsub{$stashname}='Dynamic';
|
|
# $xsub{$stashname}='Static' unless $xsub{$stashname};
|
|
return qq/NULL/;
|
|
}
|
|
warn sprintf("stub for XSUB $cvstashname\:\:$cvname CV 0x%x\n", $$cv) if $debug_cv;
|
|
return qq/(perl_get_cv("$stashname\:\:$cvname",TRUE))/;
|
|
}
|
|
if ($cvxsub && $cvname eq "INIT") {
|
|
no strict 'refs';
|
|
return svref_2object(\&Dummy_initxs)->save;
|
|
}
|
|
my $sv_ix = $svsect->index + 1;
|
|
$svsect->add("svix$sv_ix");
|
|
my $xpvcv_ix = $xpvcvsect->index + 1;
|
|
$xpvcvsect->add("xpvcvix$xpvcv_ix");
|
|
# Save symbol now so that GvCV() doesn't recurse back to us via CvGV()
|
|
$sym = savesym($cv, "&sv_list[$sv_ix]");
|
|
warn sprintf("saving $cvstashname\:\:$cvname CV 0x%x as $sym\n", $$cv) if $debug_cv;
|
|
if (!$$root && !$cvxsub) {
|
|
if (try_autoload($cvstashname, $cvname)) {
|
|
# Recalculate root and xsub
|
|
$root = $cv->ROOT;
|
|
$cvxsub = $cv->XSUB;
|
|
if ($$root || $cvxsub) {
|
|
warn "Successful forced autoload\n";
|
|
}
|
|
}
|
|
}
|
|
my $startfield = 0;
|
|
my $padlist = $cv->PADLIST;
|
|
my $pv = $cv->PV;
|
|
my $xsub = 0;
|
|
my $xsubany = "Nullany";
|
|
if ($$root) {
|
|
warn sprintf("saving op tree for CV 0x%x, root = 0x%x\n",
|
|
$$cv, $$root) if $debug_cv;
|
|
my $ppname = "";
|
|
if ($$gv) {
|
|
my $stashname = $gv->STASH->NAME;
|
|
my $gvname = $gv->NAME;
|
|
if ($gvname ne "__ANON__") {
|
|
$ppname = (${$gv->FORM} == $$cv) ? "pp_form_" : "pp_sub_";
|
|
$ppname .= ($stashname eq "main") ?
|
|
$gvname : "$stashname\::$gvname";
|
|
$ppname =~ s/::/__/g;
|
|
if ($gvname eq "INIT"){
|
|
$ppname .= "_$initsub_index";
|
|
$initsub_index++;
|
|
}
|
|
}
|
|
}
|
|
if (!$ppname) {
|
|
$ppname = "pp_anonsub_$anonsub_index";
|
|
$anonsub_index++;
|
|
}
|
|
$startfield = saveoptree($ppname, $root, $cv->START, $padlist->ARRAY);
|
|
warn sprintf("done saving op tree for CV 0x%x, name %s, root 0x%x\n",
|
|
$$cv, $ppname, $$root) if $debug_cv;
|
|
if ($$padlist) {
|
|
warn sprintf("saving PADLIST 0x%x for CV 0x%x\n",
|
|
$$padlist, $$cv) if $debug_cv;
|
|
$padlist->save;
|
|
warn sprintf("done saving PADLIST 0x%x for CV 0x%x\n",
|
|
$$padlist, $$cv) if $debug_cv;
|
|
}
|
|
}
|
|
else {
|
|
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",
|
|
$xpvcv_ix, cstring($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);"));
|
|
}
|
|
|
|
if ($$gv) {
|
|
$gv->save;
|
|
$init->add(sprintf("CvGV(s\\_%x) = s\\_%x;",$$cv,$$gv));
|
|
warn sprintf("done saving GV 0x%x for CV 0x%x\n",
|
|
$$gv, $$cv) if $debug_cv;
|
|
}
|
|
$init->add(sprintf("CvFILE($sym) = %s;", cstring($cv->FILE)));
|
|
my $stash = $cv->STASH;
|
|
if ($$stash) {
|
|
$stash->save;
|
|
$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 , $cv->FLAGS));
|
|
return $sym;
|
|
}
|
|
|
|
sub B::GV::save {
|
|
my ($gv) = @_;
|
|
my $sym = objsym($gv);
|
|
if (defined($sym)) {
|
|
#warn sprintf("GV 0x%x already saved as $sym\n", $$gv); # debug
|
|
return $sym;
|
|
} else {
|
|
my $ix = $gv_index++;
|
|
$sym = savesym($gv, "gv_list[$ix]");
|
|
#warn sprintf("Saving GV 0x%x as $sym\n", $$gv); # debug
|
|
}
|
|
my $is_empty = $gv->is_empty;
|
|
my $gvname = $gv->NAME;
|
|
my $name = cstring($gv->STASH->NAME . "::" . $gvname);
|
|
#warn "GV name is $name\n"; # debug
|
|
my $egvsym;
|
|
unless ($is_empty) {
|
|
my $egv = $gv->EGV;
|
|
if ($$gv != $$egv) {
|
|
#warn(sprintf("EGV name is %s, saving it now\n",
|
|
# $egv->STASH->NAME . "::" . $egv->NAME)); # debug
|
|
$egvsym = $egv->save;
|
|
}
|
|
}
|
|
$init->add(qq[$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 $is_empty;
|
|
|
|
# Shouldn't need to do save_magic since gv_fetchpv handles that
|
|
#$gv->save_magic;
|
|
my $refcnt = $gv->REFCNT + 1;
|
|
$init->add(sprintf("SvREFCNT($sym) += %u;", $refcnt - 1)) if $refcnt > 1;
|
|
|
|
return $sym if $is_empty;
|
|
|
|
my $gvrefcnt = $gv->GvREFCNT;
|
|
if ($gvrefcnt > 1) {
|
|
$init->add(sprintf("GvREFCNT($sym) += %u;", $gvrefcnt - 1));
|
|
}
|
|
if (defined($egvsym)) {
|
|
# Shared glob *foo = *bar
|
|
$init->add("gp_free($sym);",
|
|
"GvGP($sym) = GvGP($egvsym);");
|
|
} elsif ($gvname !~ /^([^A-Za-z]|STDIN|STDOUT|STDERR|ARGV|SIG|ENV)$/) {
|
|
# Don't save subfields of special GVs (*_, *1, *# and so on)
|
|
# warn "GV::save saving subfields\n"; # debug
|
|
my $gvsv = $gv->SV;
|
|
if ($$gvsv) {
|
|
$gvsv->save;
|
|
$init->add(sprintf("GvSV($sym) = s\\_%x;", $$gvsv));
|
|
# warn "GV::save \$$name\n"; # debug
|
|
}
|
|
my $gvav = $gv->AV;
|
|
if ($$gvav) {
|
|
$gvav->save;
|
|
$init->add(sprintf("GvAV($sym) = s\\_%x;", $$gvav));
|
|
# warn "GV::save \@$name\n"; # debug
|
|
}
|
|
my $gvhv = $gv->HV;
|
|
if ($$gvhv) {
|
|
$gvhv->save;
|
|
$init->add(sprintf("GvHV($sym) = s\\_%x;", $$gvhv));
|
|
# warn "GV::save \%$name\n"; # debug
|
|
}
|
|
my $gvcv = $gv->CV;
|
|
if ($$gvcv) {
|
|
my $origname=cstring($gvcv->GV->EGV->STASH->NAME .
|
|
"::" . $gvcv->GV->EGV->NAME);
|
|
if (0 && $gvcv->XSUB && $name ne $origname) { #XSUB alias
|
|
# must save as a 'stub' so newXS() has a CV to populate
|
|
$init->add("{ CV *cv;");
|
|
$init->add("\tcv=perl_get_cv($origname,TRUE);");
|
|
$init->add("\tGvCV($sym)=cv;");
|
|
$init->add("\tSvREFCNT_inc((SV *)cv);");
|
|
$init->add("}");
|
|
} else {
|
|
$init->add(sprintf("GvCV($sym) = (CV*)(%s);", $gvcv->save));
|
|
# warn "GV::save &$name\n"; # debug
|
|
}
|
|
}
|
|
$init->add(sprintf("GvFILE($sym) = %s;", cstring($gv->FILE)));
|
|
# warn "GV::save GvFILE(*$name)\n"; # debug
|
|
my $gvform = $gv->FORM;
|
|
if ($$gvform) {
|
|
$gvform->save;
|
|
$init->add(sprintf("GvFORM($sym) = (CV*)s\\_%x;", $$gvform));
|
|
# warn "GV::save GvFORM(*$name)\n"; # debug
|
|
}
|
|
my $gvio = $gv->IO;
|
|
if ($$gvio) {
|
|
$gvio->save;
|
|
$init->add(sprintf("GvIOp($sym) = s\\_%x;", $$gvio));
|
|
# warn "GV::save GvIO(*$name)\n"; # debug
|
|
}
|
|
}
|
|
return $sym;
|
|
}
|
|
sub B::AV::save {
|
|
my ($av) = @_;
|
|
my $sym = objsym($av);
|
|
return $sym if defined $sym;
|
|
my $avflags = $av->AvFLAGS;
|
|
$xpvavsect->add(sprintf("0, -1, -1, 0, 0.0, 0, Nullhv, 0, 0, 0x%x",
|
|
$avflags));
|
|
$svsect->add(sprintf("&xpvav_list[%d], %lu, 0x%x",
|
|
$xpvavsect->index, $av->REFCNT , $av->FLAGS));
|
|
my $sv_list_index = $svsect->index;
|
|
my $fill = $av->FILL;
|
|
$av->save_magic;
|
|
warn sprintf("saving AV 0x%x FILL=$fill AvFLAGS=0x%x", $$av, $avflags)
|
|
if $debug_av;
|
|
# XXX AVf_REAL is wrong test: need to save comppadlist but not stack
|
|
#if ($fill > -1 && ($avflags & AVf_REAL)) {
|
|
if ($fill > -1) {
|
|
my @array = $av->ARRAY;
|
|
if ($debug_av) {
|
|
my $el;
|
|
my $i = 0;
|
|
foreach $el (@array) {
|
|
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++] = ...;
|
|
$init->add("{",
|
|
"\tSV **svp;",
|
|
"\tAV *av = (AV*)&sv_list[$sv_list_index];",
|
|
"\tav_extend(av, $fill);",
|
|
"\tsvp = AvARRAY(av);",
|
|
map("\t*svp++ = (SV*)$_;", @names),
|
|
"\tAvFILLp(av) = $fill;",
|
|
"}");
|
|
} else {
|
|
my $max = $av->MAX;
|
|
$init->add("av_extend((AV*)&sv_list[$sv_list_index], $max);")
|
|
if $max > -1;
|
|
}
|
|
return savesym($av, "(AV*)&sv_list[$sv_list_index]");
|
|
}
|
|
|
|
sub B::HV::save {
|
|
my ($hv) = @_;
|
|
my $sym = objsym($hv);
|
|
return $sym if defined $sym;
|
|
my $name = $hv->NAME;
|
|
if ($name) {
|
|
# It's a stash
|
|
|
|
# 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};
|
|
my $adpmroot = 0;
|
|
$decl->add("static HV *hv$hv_index;");
|
|
# XXX Beware of weird package names containing double-quotes, \n, ...?
|
|
$init->add(qq[hv$hv_index = gv_stashpv("$name", TRUE);]);
|
|
if ($adpmroot) {
|
|
$init->add(sprintf("HvPMROOT(hv$hv_index) = (PMOP*)s\\_%x;",
|
|
$adpmroot));
|
|
}
|
|
$sym = savesym($hv, "hv$hv_index");
|
|
$hv_index++;
|
|
return $sym;
|
|
}
|
|
# It's just an ordinary HV
|
|
$xpvhvsect->add(sprintf("0, 0, %d, 0, 0.0, 0, Nullhv, %d, 0, 0, 0",
|
|
$hv->MAX, $hv->RITER));
|
|
$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;
|
|
if (@contents) {
|
|
my $i;
|
|
for ($i = 1; $i < @contents; $i += 2) {
|
|
$contents[$i] = $contents[$i]->save;
|
|
}
|
|
$init->add("{", "\tHV *hv = (HV*)&sv_list[$sv_list_index];");
|
|
while (@contents) {
|
|
my ($key, $value) = splice(@contents, 0, 2);
|
|
$init->add(sprintf("\thv_store(hv, %s, %u, %s, %s);",
|
|
cstring($key),length($key),$value, hash($key)));
|
|
# $init->add(sprintf("\thv_store(hv, %s, %u, %s, %s);",
|
|
# cstring($key),length($key),$value, 0));
|
|
}
|
|
$init->add("}");
|
|
}
|
|
$hv->save_magic();
|
|
return savesym($hv, "(HV*)&sv_list[$sv_list_index]");
|
|
}
|
|
|
|
sub B::IO::save {
|
|
my ($io) = @_;
|
|
my $sym = objsym($io);
|
|
return $sym if defined $sym;
|
|
my $pv = $io->PV;
|
|
$pv = '' unless defined $pv;
|
|
my $len = length($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]", $svsect->index));
|
|
my ($field, $fsym);
|
|
foreach $field (qw(TOP_GV FMT_GV BOTTOM_GV)) {
|
|
$fsym = $io->$field();
|
|
if ($$fsym) {
|
|
$init->add(sprintf("Io$field($sym) = (GV*)s\\_%x;", $$fsym));
|
|
$fsym->save;
|
|
}
|
|
}
|
|
$io->save_magic;
|
|
return $sym;
|
|
}
|
|
|
|
sub B::SV::save {
|
|
my $sv = shift;
|
|
# This is where we catch an honest-to-goodness Nullsv (which gets
|
|
# blessed into B::SV explicitly) and any stray erroneous SVs.
|
|
return 0 unless $$sv;
|
|
confess sprintf("cannot save that type of SV: %s (0x%x)\n",
|
|
class($sv), $$sv);
|
|
}
|
|
|
|
sub output_all {
|
|
my $init_name = shift;
|
|
my $section;
|
|
my @sections = ($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");
|
|
print "\n";
|
|
output_declarations();
|
|
foreach $section (@sections) {
|
|
my $lines = $section->index + 1;
|
|
if ($lines) {
|
|
my $name = $section->name;
|
|
my $typename = ($name eq "xpvcv") ? "XPVCV_or_similar" : uc($name);
|
|
print "Static $typename ${name}_list[$lines];\n";
|
|
}
|
|
}
|
|
$decl->output(\*STDOUT, "%s\n");
|
|
print "\n";
|
|
foreach $section (@sections) {
|
|
my $lines = $section->index + 1;
|
|
if ($lines) {
|
|
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 },\n");
|
|
print "};\n\n";
|
|
}
|
|
}
|
|
|
|
print <<"EOT";
|
|
static int $init_name()
|
|
{
|
|
dTARG;
|
|
dSP;
|
|
EOT
|
|
$init->output(\*STDOUT, "\t%s\n");
|
|
print "\treturn 0;\n}\n";
|
|
if ($verbose) {
|
|
warn compile_stats();
|
|
warn "NULLOP count: $nullop_count\n";
|
|
}
|
|
}
|
|
|
|
sub output_declarations {
|
|
print <<'EOT';
|
|
#ifdef BROKEN_STATIC_REDECL
|
|
#define Static extern
|
|
#else
|
|
#define Static static
|
|
#endif /* BROKEN_STATIC_REDECL */
|
|
|
|
#ifdef BROKEN_UNION_INIT
|
|
/*
|
|
* Cribbed from cv.h with ANY (a union) replaced by void*.
|
|
* Some pre-Standard compilers can't cope with initialising unions. Ho hum.
|
|
*/
|
|
typedef struct {
|
|
char * xpv_pv; /* pointer to malloced string */
|
|
STRLEN xpv_cur; /* length of xp_pv as a C string */
|
|
STRLEN xpv_len; /* allocated size */
|
|
IV xof_off; /* integer value */
|
|
NV xnv_nv; /* numeric value, if any */
|
|
MAGIC* xmg_magic; /* magic for scalar array */
|
|
HV* xmg_stash; /* class package */
|
|
|
|
HV * xcv_stash;
|
|
OP * xcv_start;
|
|
OP * xcv_root;
|
|
void (*xcv_xsub) (pTHXo_ CV*);
|
|
ANY xcv_xsubany;
|
|
GV * xcv_gv;
|
|
char * xcv_file;
|
|
long xcv_depth; /* >= 2 indicates recursive call */
|
|
AV * xcv_padlist;
|
|
CV * xcv_outside;
|
|
#ifdef USE_THREADS
|
|
perl_mutex *xcv_mutexp;
|
|
struct perl_thread *xcv_owner; /* current owner thread */
|
|
#endif /* USE_THREADS */
|
|
cv_flags_t xcv_flags;
|
|
} XPVCV_or_similar;
|
|
#define ANYINIT(i) i
|
|
#else
|
|
#define XPVCV_or_similar XPVCV
|
|
#define ANYINIT(i) {i}
|
|
#endif /* BROKEN_UNION_INIT */
|
|
#define Nullany ANYINIT(0)
|
|
|
|
#define UNUSED 0
|
|
#define sym_0 0
|
|
|
|
EOT
|
|
print "static GV *gv_list[$gv_index];\n" if $gv_index;
|
|
print "\n";
|
|
}
|
|
|
|
|
|
sub output_boilerplate {
|
|
print <<'EOT';
|
|
#include "EXTERN.h"
|
|
#include "perl.h"
|
|
#include "XSUB.h"
|
|
|
|
/* Workaround for mapstart: the only op which needs a different ppaddr */
|
|
#undef Perl_pp_mapstart
|
|
#define Perl_pp_mapstart Perl_pp_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;
|
|
EOT
|
|
}
|
|
|
|
sub output_main {
|
|
print <<'EOT';
|
|
int
|
|
main(int argc, char **argv, char **env)
|
|
{
|
|
int exitstatus;
|
|
int i;
|
|
char **fakeargv;
|
|
|
|
PERL_SYS_INIT3(&argc,&argv,&env);
|
|
|
|
if (!PL_do_undump) {
|
|
my_perl = perl_alloc();
|
|
if (!my_perl)
|
|
exit(1);
|
|
perl_construct( my_perl );
|
|
PL_perl_destruct_level = 0;
|
|
}
|
|
|
|
#ifdef CSH
|
|
if (!PL_cshlen)
|
|
PL_cshlen = strlen(PL_cshname);
|
|
#endif
|
|
|
|
#ifdef ALLOW_PERL_OPTIONS
|
|
#define EXTRA_OPTIONS 2
|
|
#else
|
|
#define EXTRA_OPTIONS 3
|
|
#endif /* ALLOW_PERL_OPTIONS */
|
|
New(666, fakeargv, argc + EXTRA_OPTIONS + 1, char *);
|
|
fakeargv[0] = argv[0];
|
|
fakeargv[1] = "-e";
|
|
fakeargv[2] = "";
|
|
#ifndef ALLOW_PERL_OPTIONS
|
|
fakeargv[3] = "--";
|
|
#endif /* ALLOW_PERL_OPTIONS */
|
|
for (i = 1; i < argc; i++)
|
|
fakeargv[i + EXTRA_OPTIONS] = argv[i];
|
|
fakeargv[argc + EXTRA_OPTIONS] = 0;
|
|
|
|
exitstatus = perl_parse(my_perl, xs_init, argc + EXTRA_OPTIONS,
|
|
fakeargv, NULL);
|
|
if (exitstatus)
|
|
exit( exitstatus );
|
|
|
|
sv_setpv(GvSV(gv_fetchpv("0", TRUE, SVt_PV)), argv[0]);
|
|
PL_main_cv = PL_compcv;
|
|
PL_compcv = 0;
|
|
|
|
exitstatus = perl_init();
|
|
if (exitstatus)
|
|
exit( exitstatus );
|
|
dl_init(aTHX);
|
|
|
|
exitstatus = perl_run( my_perl );
|
|
|
|
perl_destruct( my_perl );
|
|
perl_free( my_perl );
|
|
|
|
PERL_SYS_TERM();
|
|
|
|
exit( exitstatus );
|
|
}
|
|
|
|
/* yanked from perl.c */
|
|
static void
|
|
xs_init(pTHX)
|
|
{
|
|
char *file = __FILE__;
|
|
dTARG;
|
|
dSP;
|
|
EOT
|
|
print "\n#ifdef USE_DYNAMIC_LOADING";
|
|
print qq/\n\tnewXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, file);/;
|
|
print "\n#endif\n" ;
|
|
# delete $xsub{'DynaLoader'};
|
|
delete $xsub{'UNIVERSAL'};
|
|
print("/* bootstrapping code*/\n\tSAVETMPS;\n");
|
|
print("\ttarg=sv_newmortal();\n");
|
|
print "#ifdef DYNALOADER_BOOTSTRAP\n";
|
|
print "\tPUSHMARK(sp);\n";
|
|
print qq/\tXPUSHp("DynaLoader",strlen("DynaLoader"));\n/;
|
|
print qq/\tPUTBACK;\n/;
|
|
print "\tboot_DynaLoader(aTHX_ NULL);\n";
|
|
print qq/\tSPAGAIN;\n/;
|
|
print "#endif\n";
|
|
foreach my $stashname (keys %xsub){
|
|
if ($xsub{$stashname} ne 'Dynamic') {
|
|
my $stashxsub=$stashname;
|
|
$stashxsub =~ s/::/__/g;
|
|
print "\tPUSHMARK(sp);\n";
|
|
print qq/\tXPUSHp("$stashname",strlen("$stashname"));\n/;
|
|
print qq/\tPUTBACK;\n/;
|
|
print "\tboot_$stashxsub(aTHX_ NULL);\n";
|
|
print qq/\tSPAGAIN;\n/;
|
|
}
|
|
}
|
|
print("\tFREETMPS;\n/* end bootstrapping code */\n");
|
|
print "}\n";
|
|
|
|
print <<'EOT';
|
|
static void
|
|
dl_init(pTHX)
|
|
{
|
|
char *file = __FILE__;
|
|
dTARG;
|
|
dSP;
|
|
EOT
|
|
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} eq 'Dynamic') {
|
|
my $stashxsub=$stashname;
|
|
$stashxsub =~ s/::/__/g;
|
|
print "\tPUSHMARK(sp);\n";
|
|
print qq/\tXPUSHp("$stashname",/,length($stashname),qq/);\n/;
|
|
print qq/\tPUTBACK;\n/;
|
|
print "#ifdef DYNALOADER_BOOTSTRAP\n";
|
|
warn "bootstrapping $stashname added to xs_init\n";
|
|
print qq/\tperl_call_method("bootstrap",G_DISCARD);\n/;
|
|
print "\n#else\n";
|
|
print "\tboot_$stashxsub(aTHX_ NULL);\n";
|
|
print "#endif\n";
|
|
print qq/\tSPAGAIN;\n/;
|
|
}
|
|
}
|
|
print("\tFREETMPS;\n/* end Dynamic bootstrapping code */\n");
|
|
print "}\n";
|
|
}
|
|
sub dump_symtable {
|
|
# For debugging
|
|
my ($sym, $val);
|
|
warn "----Symbol table:\n";
|
|
while (($sym, $val) = each %symtable) {
|
|
warn "$sym => $val\n";
|
|
}
|
|
warn "---End of symbol table\n";
|
|
}
|
|
|
|
sub save_object {
|
|
my $sv;
|
|
foreach $sv (@_) {
|
|
svref_2object($sv)->save;
|
|
}
|
|
}
|
|
|
|
sub Dummy_BootStrap { }
|
|
|
|
sub B::GV::savecv
|
|
{
|
|
my $gv = shift;
|
|
my $package=$gv->STASH->NAME;
|
|
my $name = $gv->NAME;
|
|
my $cv = $gv->CV;
|
|
my $sv = $gv->SV;
|
|
my $av = $gv->AV;
|
|
my $hv = $gv->HV;
|
|
|
|
# We may be looking at this package just because it is a branch in the
|
|
# symbol table which is on the path to a package which we need to save
|
|
# e.g. this is 'Getopt' and we need to save 'Getopt::Long'
|
|
#
|
|
return unless ($unused_sub_packages{$package});
|
|
return unless ($$cv || $$av || $$sv || $$hv);
|
|
$gv->save;
|
|
}
|
|
|
|
sub mark_package
|
|
{
|
|
my $package = shift;
|
|
unless ($unused_sub_packages{$package})
|
|
{
|
|
no strict 'refs';
|
|
$unused_sub_packages{$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 { $package->bootstrap };
|
|
}
|
|
}
|
|
# else
|
|
{
|
|
unless ($unused_sub_packages{$isa})
|
|
{
|
|
warn "$isa saved (it is in $package\'s \@ISA)\n";
|
|
mark_package($isa);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
sub should_save
|
|
{
|
|
no strict qw(vars refs);
|
|
my $package = shift;
|
|
$package =~ s/::$//;
|
|
return $unused_sub_packages{$package} = 0 if ($package =~ /::::/); # skip ::::ISA::CACHE etc.
|
|
# warn "Considering $package\n";#debug
|
|
foreach my $u (grep($unused_sub_packages{$_},keys %unused_sub_packages))
|
|
{
|
|
# If this package is a prefix to something we are saving, traverse it
|
|
# but do not mark it for saving if it is not already
|
|
# e.g. to get to Getopt::Long we need to traverse Getopt but need
|
|
# not save Getopt
|
|
return 1 if ($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{
|
|
my $packname=shift;
|
|
$packname =~ s/\:\:/\//g;
|
|
$packname .= '.pm';
|
|
# warn "deleting $packname" if $INC{$packname} ;# debug
|
|
delete $INC{$packname};
|
|
}
|
|
sub walkpackages
|
|
{
|
|
my ($symref, $recurse, $prefix) = @_;
|
|
my $sym;
|
|
my $ref;
|
|
no strict 'vars';
|
|
local(*glob);
|
|
$prefix = '' unless defined $prefix;
|
|
while (($sym, $ref) = each %$symref)
|
|
{
|
|
*glob = $ref;
|
|
if ($sym =~ /::$/)
|
|
{
|
|
$sym = $prefix . $sym;
|
|
if ($sym ne "main::" && $sym ne "<none>::" && &$recurse($sym))
|
|
{
|
|
walkpackages(\%glob, $recurse, $sym);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
sub save_unused_subs
|
|
{
|
|
no strict qw(refs);
|
|
&descend_marked_unused;
|
|
warn "Prescan\n";
|
|
walkpackages(\%{"main::"}, sub { should_save($_[0]); return 1 });
|
|
warn "Saving methods\n";
|
|
walksymtable(\%{"main::"}, "savecv", \&should_save);
|
|
}
|
|
|
|
sub save_context
|
|
{
|
|
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 $pack (keys %unused_sub_packages)
|
|
{
|
|
mark_package($pack);
|
|
}
|
|
}
|
|
|
|
sub save_main {
|
|
warn "Starting compile\n";
|
|
warn "Walking tree\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;
|
|
save_unused_subs();
|
|
my $init_av = init_av->save;
|
|
$init->add(sprintf("PL_main_root = s\\_%x;", ${main_root()}),
|
|
sprintf("PL_main_start = s\\_%x;", ${main_start()}),
|
|
"PL_initav = (AV *) $init_av;");
|
|
save_context();
|
|
warn "Writing output\n";
|
|
output_boilerplate();
|
|
print "\n";
|
|
output_all("perl_init");
|
|
print "\n";
|
|
output_main();
|
|
}
|
|
|
|
sub init_sections {
|
|
my @sections = (init => \$init, decl => \$decl, sym => \$symsect,
|
|
binop => \$binopsect, condop => \$condopsect,
|
|
cop => \$copsect, padop => \$padopsect,
|
|
listop => \$listopsect, logop => \$logopsect,
|
|
loop => \$loopsect, op => \$opsect, pmop => \$pmopsect,
|
|
pvop => \$pvopsect, svop => \$svopsect, unop => \$unopsect,
|
|
sv => \$svsect, xpv => \$xpvsect, xpvav => \$xpvavsect,
|
|
xpvhv => \$xpvhvsect, xpvcv => \$xpvcvsect,
|
|
xpviv => \$xpvivsect, xpvnv => \$xpvnvsect,
|
|
xpvmg => \$xpvmgsect, xpvlv => \$xpvlvsect,
|
|
xrv => \$xrvsect, xpvbm => \$xpvbmsect,
|
|
xpvio => \$xpviosect);
|
|
my ($name, $sectref);
|
|
while (($name, $sectref) = splice(@sections, 0, 2)) {
|
|
$$sectref = new B::C::Section $name, \%symtable, 0;
|
|
}
|
|
}
|
|
|
|
sub mark_unused
|
|
{
|
|
my ($arg,$val) = @_;
|
|
$unused_sub_packages{$arg} = $val;
|
|
}
|
|
|
|
sub compile {
|
|
my @options = @_;
|
|
my ($option, $opt, $arg);
|
|
OPTION:
|
|
while ($option = shift @options) {
|
|
if ($option =~ /^-(.)(.*)/) {
|
|
$opt = $1;
|
|
$arg = $2;
|
|
} else {
|
|
unshift @options, $option;
|
|
last OPTION;
|
|
}
|
|
if ($opt eq "-" && $arg eq "-") {
|
|
shift @options;
|
|
last OPTION;
|
|
}
|
|
if ($opt eq "w") {
|
|
$warn_undefined_syms = 1;
|
|
} elsif ($opt eq "D") {
|
|
$arg ||= shift @options;
|
|
foreach $arg (split(//, $arg)) {
|
|
if ($arg eq "o") {
|
|
B->debug(1);
|
|
} elsif ($arg eq "c") {
|
|
$debug_cops = 1;
|
|
} elsif ($arg eq "A") {
|
|
$debug_av = 1;
|
|
} elsif ($arg eq "C") {
|
|
$debug_cv = 1;
|
|
} elsif ($arg eq "M") {
|
|
$debug_mg = 1;
|
|
} else {
|
|
warn "ignoring unknown debug option: $arg\n";
|
|
}
|
|
}
|
|
} elsif ($opt eq "o") {
|
|
$arg ||= shift @options;
|
|
open(STDOUT, ">$arg") or return "$arg: $!\n";
|
|
} elsif ($opt eq "v") {
|
|
$verbose = 1;
|
|
} elsif ($opt eq "u") {
|
|
$arg ||= shift @options;
|
|
mark_unused($arg,undef);
|
|
} elsif ($opt eq "f") {
|
|
$arg ||= shift @options;
|
|
if ($arg eq "cog") {
|
|
$pv_copy_on_grow = 1;
|
|
} elsif ($arg eq "no-cog") {
|
|
$pv_copy_on_grow = 0;
|
|
}
|
|
} elsif ($opt eq "O") {
|
|
$arg = 1 if $arg eq "";
|
|
$pv_copy_on_grow = 0;
|
|
if ($arg >= 1) {
|
|
# Optimisations for -O1
|
|
$pv_copy_on_grow = 1;
|
|
}
|
|
} elsif ($opt eq "l") {
|
|
$max_string_len = $arg;
|
|
}
|
|
}
|
|
init_sections();
|
|
if (@options) {
|
|
return sub {
|
|
my $objname;
|
|
foreach $objname (@options) {
|
|
eval "save_object(\\$objname)";
|
|
}
|
|
output_all();
|
|
}
|
|
} else {
|
|
return sub { save_main() };
|
|
}
|
|
}
|
|
|
|
1;
|
|
|
|
__END__
|
|
|
|
=head1 NAME
|
|
|
|
B::C - Perl compiler's C backend
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
perl -MO=C[,OPTIONS] foo.pl
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
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.
|
|
|
|
=head1 OPTIONS
|
|
|
|
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.
|
|
|
|
=over 4
|
|
|
|
=item B<-ofilename>
|
|
|
|
Output to filename instead of STDOUT
|
|
|
|
=item B<-v>
|
|
|
|
Verbose compilation (currently gives a few compilation statistics).
|
|
|
|
=item B<-->
|
|
|
|
Force end of options
|
|
|
|
=item B<-uPackname>
|
|
|
|
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.
|
|
|
|
=item B<-D>
|
|
|
|
Debug options (concatenated or separate flags like C<perl -D>).
|
|
|
|
=item B<-Do>
|
|
|
|
OPs, prints each OP as it's processed
|
|
|
|
=item B<-Dc>
|
|
|
|
COPs, prints COPs as processed (incl. file & line num)
|
|
|
|
=item B<-DA>
|
|
|
|
prints AV information on saving
|
|
|
|
=item B<-DC>
|
|
|
|
prints CV information on saving
|
|
|
|
=item B<-DM>
|
|
|
|
prints MAGIC information on saving
|
|
|
|
=item B<-f>
|
|
|
|
Force optimisations on or off one at a time.
|
|
|
|
=item B<-fcog>
|
|
|
|
Copy-on-grow: PVs declared and initialised statically.
|
|
|
|
=item B<-fno-cog>
|
|
|
|
No copy-on-grow.
|
|
|
|
=item B<-On>
|
|
|
|
Optimisation level (n = 0, 1, 2, ...). B<-O> means B<-O1>. Currently,
|
|
B<-O1> and higher set B<-fcog>.
|
|
|
|
=item B<-llimit>
|
|
|
|
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
|
|
exceeding that limit.
|
|
|
|
=back
|
|
|
|
=head1 EXAMPLES
|
|
|
|
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
|
|
|
|
=head1 BUGS
|
|
|
|
Plenty. Current status: experimental.
|
|
|
|
=head1 AUTHOR
|
|
|
|
Malcolm Beattie, C<[email protected]>
|
|
|
|
=cut
|