diff options
Diffstat (limited to 'Master/tlpkg/tlperl/lib/B/C.pm')
-rw-r--r-- | Master/tlpkg/tlperl/lib/B/C.pm | 2272 |
1 files changed, 0 insertions, 2272 deletions
diff --git a/Master/tlpkg/tlperl/lib/B/C.pm b/Master/tlpkg/tlperl/lib/B/C.pm deleted file mode 100644 index cebf4132ffd..00000000000 --- a/Master/tlpkg/tlperl/lib/B/C.pm +++ /dev/null @@ -1,2272 +0,0 @@ -# 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 |