diff options
Diffstat (limited to 'Master/tlpkg/tlperl.old/lib/B/C.pm')
-rw-r--r-- | Master/tlpkg/tlperl.old/lib/B/C.pm | 2272 |
1 files changed, 2272 insertions, 0 deletions
diff --git a/Master/tlpkg/tlperl.old/lib/B/C.pm b/Master/tlpkg/tlperl.old/lib/B/C.pm new file mode 100644 index 00000000000..cebf4132ffd --- /dev/null +++ b/Master/tlpkg/tlperl.old/lib/B/C.pm @@ -0,0 +1,2272 @@ +# 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; + +our $VERSION = '1.04_01'; + +package B::C::Section; + +use B (); +use base B::Section; + +sub new +{ + my $class = shift; + my $o = $class->SUPER::new(@_); + push @$o, { values => [] }; + return $o; +} + +sub add +{ + my $section = shift; + push(@{$section->[-1]{values}},@_); +} + +sub index +{ + my $section = shift; + return scalar(@{$section->[-1]{values}})-1; +} + +sub output +{ + my ($section, $fh, $format) = @_; + my $sym = $section->symtable || {}; + my $default = $section->default; + my $i; + foreach (@{$section->[-1]{values}}) + { + s{(s\\_[0-9a-f]+)}{ exists($sym->{$1}) ? $sym->{$1} : $default; }ge; + printf $fh $format, $_, $i; + ++$i; + } +} + +package B::C::InitSection; + +# avoid use vars +@B::C::InitSection::ISA = qw(B::C::Section); + +sub new { + my $class = shift; + 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; + + return $section; +} + +sub split { + my $section = shift; + $section->[-1]{nosplit}-- + if $section->[-1]{nosplit} > 0; +} + +sub no_split { + shift->[-1]{nosplit}++; +} + +sub inc_count { + my $section = shift; + + $section->[-1]{count} += $_[0]; + # this is cheating + $section->add(); +} + +sub add { + my $section = shift->[-1]; + my $current = $section->{current}; + my $nosplit = $section->{nosplit}; + + push @$current, @_; + $section->{count} += scalar(@_); + if( !$nosplit && $section->{count} >= $section->{max_lines} ) { + push @{$section->{chunks}}, $current; + $section->{current} = []; + $section->{count} = 0; + } +} + +sub add_eval { + my $section = shift; + my @strings = @_; + + foreach my $i ( @strings ) { + $i =~ s/\"/\\\"/g; + } + push @{$section->[-1]{evals}}, @strings; +} + +sub output { + my( $section, $fh, $format, $init_name ) = @_; + my $sym = $section->symtable || {}; + my $default = $section->default; + push @{$section->[-1]{chunks}}, $section->[-1]{current}; + + my $name = "aaaa"; + foreach my $i ( @{$section->[-1]{chunks}} ) { + print $fh <<"EOT"; +static int perl_init_${name}() +{ + dTARG; + dSP; +EOT + foreach my $j ( @$i ) { + $j =~ s{(s\\_[0-9a-f]+)} + { exists($sym->{$1}) ? $sym->{$1} : $default; }ge; + print $fh "\t$j\n"; + } + print $fh "\treturn 0;\n}\n"; + + $section->SUPER::add( "perl_init_${name}();" ); + ++$name; + } + foreach my $i ( @{$section->[-1]{evals}} ) { + $section->SUPER::add( sprintf q{eval_pv("%s",1);}, $i ); + } + + print $fh <<"EOT"; +static int ${init_name}() +{ + dTARG; + dSP; +EOT + $section->SUPER::output( $fh, $format ); + print $fh "\treturn 0;\n}\n"; +} + + +package B::C; +use Exporter (); +our %REGEXP; + +{ # block necessary for caller to work + my $caller = caller; + if( $caller eq 'O' ) { + require XSLoader; + XSLoader::load( 'B::C' ); + } +} + +@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 end_av regex_padav opnumber amagic_generation + HEf_SVKEY SVf_POK SVf_ROK CVf_CONST); +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 $cv_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 $use_xsloader; +my $nullop_count; +my $pv_copy_on_grow = 0; +my $optimize_ppaddr = 0; +my $optimize_warn_sv = 0; +my $use_perl_script_name = 0; +my $save_data_fh = 0; +my $save_sig = 0; +my ($debug_cops, $debug_av, $debug_cv, $debug_mg); +my $max_string_len; + +my $ithreads = $Config{useithreads} eq 'define'; + +my @threadsv_names; +BEGIN { + @threadsv_names = threadsv_names(); +} + +# Code sections +my ($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 ); +my @op_sections = \( $binopsect, $condopsect, $copsect, $padopsect, $listopsect, + $logopsect, $loopsect, $opsect, $pmopsect, $pvopsect, $svopsect, + $unopsect ); + +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); +} + +# 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 savere { + my $re = shift; + my $sym = sprintf("re%d", $re_index++); + $decl->add(sprintf("static char *$sym = %s;", cstring($re))); + + return ($sym,length(pack "a*",$re)); +} + +sub savepv { + my $pv = pack "a*", shift; + my $pvsym = 0; + my $pvmax = 0; + if ($pv_copy_on_grow) { + $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)); + } + else { + my $cstring = cstring($pv); + if ($cstring ne "0") { # sic + $decl->add(sprintf("static char %s[] = %s;", + $pvsym, $cstring)); + } + } + } else { + $pvmax = length(pack "a*",$pv) + 1; + } + return ($pvsym, $pvmax); +} + +sub save_rv { + my $sv = shift; +# confess "Can't save RV: not ROK" unless $sv->FLAGS & SVf_ROK; + my $rv = $sv->RV->save; + + $rv =~ s/^\(([AGHS]V|IO)\s*\*\)\s*(\&sv_list.*)$/$2/; + + return $rv; +} + +# savesym, pvmax, len, pv +sub save_pv_or_rv { + my $sv = shift; + + my $rok = $sv->FLAGS & SVf_ROK; + my $pok = $sv->FLAGS & SVf_POK; + my( $len, $pvmax, $savesym, $pv ) = ( 0, 0 ); + if( $rok ) { + $savesym = '(char*)' . save_rv( $sv ); + } + else { + $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 ) +sub B::OP::fake_ppaddr { + return $optimize_ppaddr ? + sprintf("INT2PTR(void*,OP_%s)", uc( $_[0]->name ) ) : + 'NULL'; +} + +# 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 + # shouldn't be freed. + + # For 5.8: + # 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 { + my $op = shift; + 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 { + my $op = shift; + return sprintf("s\\_%x, s\\_%x, %s", + ${$op->next}, ${$op->sibling}, $op->_save_common_middle); +} + +sub B::OP::save { + my ($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]))); + } + $opsect->add($op->_save_common); + my $ix = $opsect->index; + $init->add(sprintf("op_list[$ix].op_ppaddr = %s;", $op->ppaddr)) + unless $optimize_ppaddr; + savesym($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, %s", + $op->next, $op->sibling, $op->_save_common_middle)); + my $ix = $opsect->index; + $init->add(sprintf("op_list[$ix].op_ppaddr = %s;", $op->ppaddr)) + unless $optimize_ppaddr; + return "&op_list[$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, s\\_%x", $op->_save_common, ${$op->first})); + my $ix = $unopsect->index; + $init->add(sprintf("unop_list[$ix].op_ppaddr = %s;", $op->ppaddr)) + unless $optimize_ppaddr; + savesym($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, 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)) + unless $optimize_ppaddr; + savesym($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, 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)) + unless $optimize_ppaddr; + savesym($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, 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)) + unless $optimize_ppaddr; + savesym($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, s\\_%x, s\\_%x, s\\_%x, s\\_%x, s\\_%x", + $op->_save_common, ${$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)) + unless $optimize_ppaddr; + savesym($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, %s", $op->_save_common, cstring($op->pv))); + my $ix = $pvopsect->index; + $init->add(sprintf("pvop_list[$ix].op_ppaddr = %s;", $op->ppaddr)) + unless $optimize_ppaddr; + savesym($op, "(OP*)&pvop_list[$ix]"); +} + +sub B::SVOP::save { + my ($op, $level) = @_; + my $sym = objsym($op); + return $sym if defined $sym; + my $sv = $op->sv; + 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)) + unless $optimize_ppaddr; + $init->add("svop_list[$ix].op_sv = $svsym;") + unless $is_const_addr; + savesym($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, %d", + $op->_save_common, $op->padix)); + my $ix = $padopsect->index; + $init->add(sprintf("padop_list[$ix].op_ppaddr = %s;", $op->ppaddr)) + unless $optimize_ppaddr; +# $init->add(sprintf("padop_list[$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; + # shameless cut'n'paste from B::Deparse + my $warn_sv; + my $warnings = $op->warnings; + my $is_special = $warnings->isa("B::SPECIAL"); + if ($is_special && $$warnings == 4) { + # use warnings 'all'; + $warn_sv = $optimize_warn_sv ? + 'INT2PTR(SV*,1)' : + 'pWARN_ALL'; + } + elsif ($is_special && $$warnings == 5) { + # no warnings 'all'; + $warn_sv = $optimize_warn_sv ? + 'INT2PTR(SV*,2)' : + 'pWARN_NONE'; + } + elsif ($is_special) { + # use warnings; + $warn_sv = $optimize_warn_sv ? + 'INT2PTR(SV*,3)' : + 'pWARN_STD'; + } + else { + # something else + $warn_sv = $warnings->save; + } + + $copsect->add(sprintf("%s, %s, NULL, NULL, %u, %d, %u, %s", + $op->_save_common, cstring($op->label), $op->cop_seq, + $op->arybase, $op->line, + ( $optimize_warn_sv ? $warn_sv : 'NULL' ))); + my $ix = $copsect->index; + $init->add(sprintf("cop_list[$ix].op_ppaddr = %s;", $op->ppaddr)) + unless $optimize_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[$ix]"); +} + +sub B::PMOP::save { + my ($op, $level) = @_; + my $sym = objsym($op); + return $sym if defined $sym; + my $replroot = $op->pmreplroot; + my $replstart = $op->pmreplstart; + my $replrootfield; + my $replstartfield = sprintf("s\\_%x", $$replstart); + my $gvsym; + my $ppaddr = $op->ppaddr; + # under ithreads, OP_PUSHRE.op_replroot is an integer + $replrootfield = sprintf("s\\_%x", $$replroot) if ref $replroot; + if($ithreads && $op->name eq "pushre") { + $replrootfield = "INT2PTR(OP*,${replroot})"; + } elsif ($$replroot) { + # OP_PUSHRE (a mutated version of OP_MATCH for the regexp + # argument to a split) stores a GV in op_pmreplroot instead + # of a substitution syntax tree. We don't want to walk that... + if ($op->name eq "pushre") { + $gvsym = $replroot->save; +# warn "PMOP::save saving a pp_pushre with GV $gvsym\n"; # debug + $replrootfield = 0; + } else { + $replstartfield = saveoptree("*ignore*", $replroot, $replstart); + } + } + # pmnext handling is broken in perl itself, I think. Bad op_pmnext + # fields aren't noticed in perl's runtime (unless you try reset) but we + # segfault when trying to dereference it to find op->op_pmnext->op_type + $pmopsect->add(sprintf("%s, s\\_%x, s\\_%x, %s, %s, 0, %u, 0x%x, 0x%x, 0x%x", + $op->_save_common, ${$op->first}, ${$op->last}, + $replrootfield, $replstartfield, + ( $ithreads ? $op->pmoffset : 0 ), + $op->pmflags, $op->pmpermflags, $op->pmdynflags )); + my $pm = sprintf("pmop_list[%d]", $pmopsect->index); + $init->add(sprintf("$pm.op_ppaddr = %s;", $ppaddr)) + unless $optimize_ppaddr; + my $re = $op->precomp; + if (defined($re)) { + my( $resym, $relen ) = savere( $re ); + $init->add(sprintf("PM_SETRE(&$pm,pregcomp($resym, $resym + %u, &$pm));", + $relen)); + } + if ($gvsym) { + $init->add("$pm.op_pmreplroot = (OP*)$gvsym;"); + } + savesym($op, "(OP*)&$pm"); +} + +sub B::SPECIAL::save { + my ($sv) = @_; + # special case: $$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, "(void*)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; + # work with byte offsets/lengths + my $pv = pack "a*", $pv; + if (defined $max_string_len && length($pv) > $max_string_len) { + push @res, sprintf("Newx(%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( $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]", $svsect->index)); +} + +sub B::PVNV::save { + my ($sv) = @_; + my $sym = objsym($sv); + return $sym if defined $sym; + my( $savesym, $pvmax, $len, $pv ) = save_pv_or_rv( $sv ); + my $val= $sv->NVX; + $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]", $svsect->index)); +} + +sub B::BM::save { + my ($sv) = @_; + my $sym = objsym($sv); + return $sym if defined $sym; + my $pv = pack "a*", ($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( $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", + $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( $savesym, $pvmax, $len, $pv ) = save_pv_or_rv( $sv ); + + $xpvmgsect->add(sprintf("%s, %u, %u, %d, %s, 0, 0", + $savesym, $len, $pvmax, + $sv->IVX, $sv->NVX)); + $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)); + $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, $$stash)); + } + my @mgchain = $sv->MAGIC; + my ($mg, $type, $obj, $ptr,$len,$ptrsv); + foreach $mg (@mgchain) { + $type = $mg->TYPE; + $ptr = $mg->PTR; + $len=$mg->LENGTH; + if ($debug_mg) { + warn sprintf("magic %s (0x%x), obj %s (0x%x), type %s, ptr %s\n", + class($sv), $$sv, class($obj), $$obj, + cchar($type), cstring($ptr)); + } + + unless( $type eq 'r' ) { + $obj = $mg->OBJ; + $obj->save; + } + + if ($len == HEf_SVKEY){ + #The pointer is an SV* + $ptrsv=svref_2object($ptr)->save; + $init->add(sprintf("sv_magic((SV*)s\\_%x, (SV*)s\\_%x, %s,(char *) %s, %d);", + $$sv, $$obj, cchar($type),$ptrsv,$len)); + }elsif( $type eq 'r' ){ + my $rx = $mg->REGEX; + my $pmop = $REGEXP{$rx}; + + confess "PMOP not found for REGEXP $rx" unless $pmop; + + my( $resym, $relen ) = savere( $mg->precomp ); + my $pmsym = $pmop->save; + $init->add( split /\n/, sprintf <<CODE, $$sv, cchar($type), cstring($ptr) ); +{ + REGEXP* rx = pregcomp($resym, $resym + $relen, (PMOP*)$pmsym); + sv_magic((SV*)s\\_%x, (SV*)rx, %s, %s, %d); +} +CODE + }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 = save_rv( $sv ); + # 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)); + } + # and stashes, too + 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)); + } + else { + $xrvsect->add($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; + my $isconst = $cv->CvFLAGS & CVf_CONST; + if( $isconst ) { + my $value = $cv->XSUBANY; + my $stash = $gv->STASH; + my $vsym = $value->save; + 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" ); + $cv_index++; + return $sym; + } + #INIT is removed from the symbol table, so this call must come + # from PL_initav->save. Re-bootstrapping will push INIT back in + # so nullop should be sent. + if (!$isconst && $cvxsub && ($cvname ne "INIT")) { + my $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"; + # 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'; + $use_xsloader = 1; + } + else { + $xsub{$stashname}='Dynamic'; + } + # $xsub{$stashname}='Static' unless $xsub{$stashname}; + return qq/NULL/; + } + else + { + # 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 + IO::Seekable IO::Poll); + } + 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, 0x%x", + $xpvcv_ix, cstring($pv), length($pv), $cv->IVX, + $cv->NVX, $startfield, ${$cv->ROOT}, $cv->DEPTH, + $$padlist, ${$cv->OUTSIDE}, $cv->CvFLAGS, + $cv->OUTSIDE_SEQ)); + + if (${$cv->OUTSIDE} == ${main_cv()}){ + $init->add(sprintf("CvOUTSIDE(s\\_%x)=PL_main_cv;",$$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, $$cv) if $debug_cv; + } + if( $ithreads ) { + $init->add( savepvn( "CvFILE($sym)", $cv->FILE) ); + } + else { + $init->add(sprintf("CvFILE($sym) = %s;", cstring($cv->FILE))); + } + my $stash = $cv->STASH; + if ($$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*0 , $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 $fullname = $gv->STASH->NAME . "::" . $gvname; + my $name = cstring($fullname); + #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; + # 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 + #$gv->save_magic; + # 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 = $gv->GvREFCNT; + if ($gvrefcnt > 1) { + $init->add(sprintf("GvREFCNT($sym) += %u;", $gvrefcnt - 1)); + } + # some non-alphavetic globs require some parts to be saved + # ( ex. %!, but not $! ) + sub Save_HV() { 1 } + sub Save_AV() { 2 } + sub Save_SV() { 4 } + sub Save_CV() { 8 } + sub Save_FORM() { 16 } + sub Save_IO() { 32 } + my $savefields = 0; + 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 '!' ) { + $savefields = Save_HV; + } + # attributes::bootstrap is created in perl_parse + # saving it would overwrite it, because perl_init() is + # called after perl_parse() + $savefields&=~Save_CV if $fullname eq 'attributes::bootstrap'; + + # save it + # XXX is that correct? + if (defined($egvsym) && $egvsym !~ m/Null/ ) { + # Shared glob *foo = *bar + $init->add("gp_free($sym);", + "GvGP($sym) = GvGP($egvsym);"); + } elsif ($savefields) { + # Don't save subfields of special GVs (*_, *1, *# and so on) +# warn "GV::save saving subfields\n"; # debug + my $gvsv = $gv->SV; + if ($$gvsv && $savefields&Save_SV) { + $gvsv->save; + $init->add(sprintf("GvSV($sym) = s\\_%x;", $$gvsv)); +# warn "GV::save \$$name\n"; # debug + } + my $gvav = $gv->AV; + if ($$gvav && $savefields&Save_AV) { + $gvav->save; + $init->add(sprintf("GvAV($sym) = s\\_%x;", $$gvav)); +# warn "GV::save \@$name\n"; # debug + } + my $gvhv = $gv->HV; + if ($$gvhv && $savefields&Save_HV) { + $gvhv->save; + $init->add(sprintf("GvHV($sym) = s\\_%x;", $$gvhv)); +# warn "GV::save \%$name\n"; # debug + } + my $gvcv = $gv->CV; + if ($$gvcv && $savefields&Save_CV) { + my $origname=cstring($gvcv->GV->EGV->STASH->NAME . + "::" . $gvcv->GV->EGV->NAME); + if (0 && $gvcv->XSUB && $name ne $origname) { #XSUB alias + # must save as a 'stub' so newXS() has a CV to populate + $init->add("{ CV *cv;"); + $init->add("\tcv=perl_get_cv($origname,TRUE);"); + $init->add("\tGvCV($sym)=cv;"); + $init->add("\tSvREFCNT_inc((SV *)cv);"); + $init->add("}"); + } else { + $init->add(sprintf("GvCV($sym) = (CV*)(%s);", $gvcv->save)); +# warn "GV::save &$name\n"; # debug + } + } + $init->add(sprintf("GvFILE($sym) = %s;", cstring($gv->FILE))); +# warn "GV::save GvFILE(*$name)\n"; # debug + my $gvform = $gv->FORM; + if ($$gvform && $savefields&Save_FORM) { + $gvform->save; + $init->add(sprintf("GvFORM($sym) = (CV*)s\\_%x;", $$gvform)); +# warn "GV::save GvFORM(*$name)\n"; # debug + } + my $gvio = $gv->IO; + if ($$gvio && $savefields&Save_IO) { + $gvio->save; + $init->add(sprintf("GvIOp($sym) = s\\_%x;", $$gvio)); + if( $fullname =~ m/::DATA$/ && $save_data_fh ) { + no strict 'refs'; + my $fh = *{$fullname}{IO}; + use strict 'refs'; + $gvio->save_data( $fullname, <$fh> ) if $fh->opened; + } +# warn "GV::save GvIO(*$name)\n"; # debug + } + } + return $sym; +} + +sub B::AV::save { + my ($av) = @_; + my $sym = objsym($av); + return $sym if defined $sym; + my $line = "0, -1, -1, 0, 0.0, 0, Nullhv, 0, 0"; + $line .= sprintf(", 0x%x", $av->AvFLAGS) if $] < 5.009; + $xpvavsect->add($line); + $svsect->add(sprintf("&xpvav_list[%d], %lu, 0x%x", + $xpvavsect->index, $av->REFCNT , $av->FLAGS)); + my $sv_list_index = $svsect->index; + my $fill = $av->FILL; + $av->save_magic; + if ($debug_av) { + $line = sprintf("saving AV 0x%x FILL=$fill", $$av); + $line .= sprintf(" AvFLAGS=0x%x", $av->AvFLAGS) if $] < 5.009; + warn $line; + } + # XXX AVf_REAL is wrong test: need to save comppadlist but not stack + #if ($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($_->save, @array); + # XXX Better ways to write loop? + # Perhaps svp[0] = ...; svp[1] = ...; svp[2] = ...; + # Perhaps I32 i = 0; svp[i++] = ...; svp[i++] = ...; svp[i++] = ...; + + # micro optimization: op/pat.t ( and other code probably ) + # has very large pads ( 20k/30k elements ) passing them to + # ->add is a performance bottleneck: passing them as a + # single string cuts runtime from 6min20sec to 40sec + + # you want to keep this out of the no_split/split + # map("\t*svp++ = (SV*)$_;", @names), + my $acc = ''; + foreach my $i ( 0..$#array ) { + $acc .= "\t*svp++ = (SV*)" . $array[$i]->save . ";\n\t"; + } + $acc .= "\n"; + + $init->no_split; + $init->add("{", + "\tSV **svp;", + "\tAV *av = (AV*)&sv_list[$sv_list_index];", + "\tav_extend(av, $fill);", + "\tsvp = AvARRAY(av);" ); + $init->add($acc); + $init->add("\tAvFILLp(av) = $fill;", + "}"); + $init->split; + # we really added a lot of lines ( B::C::InitSection->add + # should really scan for \n, but that would slow + # it down + $init->inc_count( $#array ); + } 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->no_split; + $init->add("{", "\tHV *hv = (HV*)&sv_list[$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(pack "a*",$key), + $value, hash($key))); +# $init->add(sprintf("\thv_store(hv, %s, %u, %s, %s);", +# cstring($key),length($key),$value, 0)); + } + $init->add("}"); + $init->split; + } + $hv->save_magic(); + return savesym($hv, "(HV*)&sv_list[$sv_list_index]"); +} + +sub B::IO::save_data { + 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 ); + SV* sv = $sym; + GvSV( gv ) = sv; + } +CODE + # for PerlIO::scalar + $use_xsloader = 1; + $init->add_eval( sprintf 'open(%s, "<", $%s)', $globname, $globname ); +} + +sub B::IO::save { + my ($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)); + # deal with $x = *STDIN/STDOUT/STDERR{IO} + my $perlio_func; + foreach ( qw(stdin stdout stderr) ) { + $io->IsSTD($_) and $perlio_func = $_; + } + if( $perlio_func ) { + $init->add( "IoIFP(${sym})=PerlIO_${perlio_func}();" ); + $init->add( "IoOFP(${sym})=PerlIO_${perlio_func}();" ); + } + + my ($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"; + } + } + # XXX hack for when Perl accesses PVX of GVs + print 'Static char emptystring[] = "\0";'; + + $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 }, /* %d */\n"); + print "};\n\n"; + } + } + + $init->output(\*STDOUT, "\t%s\n", $init_name ); + if ($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) (pTHX_ CV*); + ANY xcv_xsubany; + GV * xcv_gv; + char * xcv_file; + long xcv_depth; /* >= 2 indicates recursive call */ + AV * xcv_padlist; + CV * xcv_outside; +EOT + print <<'EOT' if $] < 5.009; +#ifdef USE_5005THREADS + perl_mutex *xcv_mutexp; + struct perl_thread *xcv_owner; /* current owner thread */ +#endif /* USE_5005THREADS */ +EOT + print <<'EOT'; + cv_flags_t xcv_flags; + U32 xcv_outside_seq; /* the COP sequence (at the point of our + * compilation) in the lexically enclosing + * sub */ +} XPVCV_or_similar; +#define ANYINIT(i) i +#else +#define XPVCV_or_similar XPVCV +#define ANYINIT(i) {i} +#endif /* BROKEN_UNION_INIT */ +#define Nullany ANYINIT(0) + +#define UNUSED 0 +#define sym_0 0 +EOT + print "static GV *gv_list[$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 +#undef OP_MAPSTART +#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; +EOT +} + +sub init_op_addr { + my( $op_type, $num ) = @_; + my $op_list = $op_type."_list"; + + $init->add( split /\n/, <<EOT ); + { + int i; + + for( i = 0; i < ${num}; ++i ) + { + ${op_list}\[i].op_ppaddr = PL_ppaddr[INT2PTR(int,${op_list}\[i].op_ppaddr)]; + } + } +EOT +} + +sub init_op_warn { + 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 ); + { + int i; + + for( i = 0; i < ${num}; ++i ) + { + switch( (int)(${op_list}\[i].cop_warnings) ) + { + case 1: + ${op_list}\[i].cop_warnings = pWARN_ALL; + break; + case 2: + ${op_list}\[i].cop_warnings = pWARN_NONE; + break; + case 3: + ${op_list}\[i].cop_warnings = pWARN_STD; + break; + default: + break; + } + } + } +EOT +} + +sub output_main { + print <<'EOT'; +/* if USE_IMPLICIT_SYS, we need a 'real' exit */ +#if defined(exit) +#undef exit +#endif + +int +main(int argc, char **argv, char **env) +{ + int exitstatus; + int i; + char **fakeargv; + GV* tmpgv; + SV* tmpsv; + int options_count; + + 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; + } +EOT + if( $ithreads ) { + # XXX init free elems! + my $pad_len = regex_padav->FILL + 1 - 1; # first is an avref + + print <<EOT; +#ifdef USE_ITHREADS + for( i = 0; i < $pad_len; ++i ) { + av_push( PL_regex_padav, newSViv(0) ); + } + PL_regex_pad = AvARRAY( PL_regex_padav ); +#endif +EOT + } + + print <<'EOT'; +#ifdef CSH + if (!PL_cshlen) + PL_cshlen = strlen(PL_cshname); +#endif + +#ifdef ALLOW_PERL_OPTIONS +#define EXTRA_OPTIONS 3 +#else +#define EXTRA_OPTIONS 4 +#endif /* ALLOW_PERL_OPTIONS */ + Newx(fakeargv, argc + EXTRA_OPTIONS + 1, char *); + + fakeargv[0] = argv[0]; + fakeargv[1] = "-e"; + fakeargv[2] = ""; + options_count = 3; +EOT + # honour -T + print <<EOT; + if( ${^TAINT} ) { + fakeargv[options_count] = "-T"; + ++options_count; + } +EOT + print <<'EOT'; +#ifndef ALLOW_PERL_OPTIONS + fakeargv[options_count] = "--"; + ++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, + fakeargv, NULL); + + if (exitstatus) + exit( exitstatus ); + + TAINT; +EOT + + if( $use_perl_script_name ) { + my $dollar_0 = $0; + $dollar_0 =~ s/\\/\\\\/g; + $dollar_0 = '"' . $dollar_0 . '"'; + + print <<EOT; + if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {/* $0 */ + tmpsv = GvSV(tmpgv); + sv_setpv(tmpsv, ${dollar_0}); + SvSETMAGIC(tmpsv); + } +EOT + } + else { + print <<EOT; + if ((tmpgv = gv_fetchpv("0",TRUE, SVt_PV))) {/* $0 */ + tmpsv = GvSV(tmpgv); + sv_setpv(tmpsv, argv[0]); + SvSETMAGIC(tmpsv); + } +EOT + } + + print <<'EOT'; + if ((tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))) {/* $^X */ + tmpsv = GvSV(tmpgv); +#ifdef WIN32 + sv_setpv(tmpsv,"perl.exe"); +#else + sv_setpv(tmpsv,"perl"); +#endif + SvSETMAGIC(tmpsv); + } + + TAINT_NOT; + + /* 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 USE_DYNAMIC_LOADING\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} !~ m/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} =~ m/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 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/; + } + else { + print qq/\tperl_call_pv("XSLoader::load",G_DISCARD);\n/; + } + print "#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; + + 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); + $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'; + $prefix = '' unless defined $prefix; + while (($sym, $ref) = each %$symref) + { + local(*glob); + *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 { + # this is mainly for the test suite + my $warner = $SIG{__WARN__}; + local $SIG{__WARN__} = sub { print STDERR @_ }; + + 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(); + # XSLoader was used, force saving of XSLoader::load + if( $use_xsloader ) { + my $cv = svref_2object( \&XSLoader::load ); + $cv->save; + } + # save %SIG ( in case it was set in a BEGIN block ) + if( $save_sig ) { + local $SIG{__WARN__} = $warner; + $init->no_split; + $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} ); + my $sv = $cv->save; + $init->add('{',sprintf 'SV* sv = (SV*)%s;', $sv ); + $init->add(sprintf("\thv_store(hv, %s, %u, %s, %s);", + cstring($k),length(pack "a*",$k), + 'sv', hash($k))); + $init->add('mg_set(sv);','}'); + } + $init->add('}'); + $init->split; + } + # honour -w + $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;"); + save_context(); + # init op addrs ( must be the last action, otherwise + # some ops might not be initialized + if( $optimize_ppaddr ) { + foreach my $i ( @op_sections ) { + my $section = $$i; + next unless $section->index >= 0; + init_op_addr( $section->name, $section->index + 1); + } + } + init_op_warn( $copsect->name, $copsect->index + 1) + if $optimize_warn_sv && $copsect->index >= 0; + + warn "Writing output\n"; + output_boilerplate(); + print "\n"; + output_all("perl_init"); + print "\n"; + output_main(); +} + +sub init_sections { + my @sections = (decl => \$decl, sym => \$symsect, + binop => \$binopsect, condop => \$condopsect, + cop => \$copsect, padop => \$padopsect, + listop => \$listopsect, logop => \$logopsect, + loop => \$loopsect, op => \$opsect, pmop => \$pmopsect, + pvop => \$pvopsect, svop => \$svopsect, unop => \$unopsect, + sv => \$svsect, xpv => \$xpvsect, xpvav => \$xpvavsect, + xpvhv => \$xpvhvsect, xpvcv => \$xpvcvsect, + xpviv => \$xpvivsect, xpvnv => \$xpvnvsect, + xpvmg => \$xpvmgsect, xpvlv => \$xpvlvsect, + xrv => \$xrvsect, xpvbm => \$xpvbmsect, + xpvio => \$xpviosect); + my ($name, $sectref); + while (($name, $sectref) = splice(@sections, 0, 2)) { + $$sectref = new B::C::Section $name, \%symtable, 0; + } + $init = new B::C::InitSection 'init', \%symtable, 0; +} + +sub mark_unused +{ + my ($arg,$val) = @_; + $unused_sub_packages{$arg} = $val; +} + +sub compile { + my @options = @_; + my ($option, $opt, $arg); + my @eval_at_startup; + my %option_map = ( 'cog' => \$pv_copy_on_grow, + 'save-data' => \$save_data_fh, + 'ppaddr' => \$optimize_ppaddr, + 'warn-sv' => \$optimize_warn_sv, + 'use-script-name' => \$use_perl_script_name, + 'save-sig-hash' => \$save_sig, + ); + my %optimization_map = ( 0 => [ qw() ], # special case + 1 => [ qw(-fcog) ], + 2 => [ qw(-fwarn-sv -fppaddr) ], + ); + OPTION: + while ($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; + $arg =~ m/(no-)?(.*)/; + my $no = defined($1) && $1 eq 'no-'; + $arg = $no ? $2 : $arg; + if( exists $option_map{$arg} ) { + ${$option_map{$arg}} = !$no; + } else { + die "Invalid optimization '$arg'"; + } + } elsif ($opt eq "O") { + $arg = 1 if $arg eq ""; + my @opt; + foreach my $i ( 1 .. $arg ) { + push @opt, @{$optimization_map{$i}} + if exists $optimization_map{$i}; + } + unshift @options, @opt; + } elsif ($opt eq "e") { + push @eval_at_startup, $arg; + } elsif ($opt eq "l") { + $max_string_len = $arg; + } + } + init_sections(); + foreach my $i ( @eval_at_startup ) { + $init->add_eval( $i ); + } + 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 options/optimisations on or off one at a time. You can explicitly +disable an option using B<-fno-option>. All options default to +B<disabled>. + +=over 4 + +=item B<-fcog> + +Copy-on-grow: PVs declared and initialised statically. + +=item B<-fsave-data> + +Save package::DATA filehandles ( only available with PerlIO ). + +=item B<-fppaddr> + +Optimize the initialization of op_ppaddr. + +=item B<-fwarn-sv> + +Optimize the initialization of cop_warnings. + +=item B<-fuse-script-name> + +Use the script name instead of the program name as $0. + +=item B<-fsave-sig-hash> + +Save compile-time modifications to the %SIG hash. + +=back + +=item B<-On> + +Optimisation level (n = 0, 1, 2, ...). B<-O> means B<-O1>. + +=over 4 + +=item B<-O0> + +Disable all optimizations. + +=item B<-O1> + +Enable B<-fcog>. + +=item B<-O2> + +Enable B<-fppaddr>, B<-fwarn-sv>. + +=back + +=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<mbeattie@sable.ox.ac.uk> + +=cut |