package B::Debug; our $VERSION = '1.02'; use strict; use B qw(peekop class walkoptree walkoptree_exec main_start main_root cstring sv_undef); use B::Asmdata qw(@specialsv_name); my %done_gv; sub B::OP::debug { my ($op) = @_; printf <<'EOT', class($op), $$op, ${$op->next}, ${$op->sibling}, $op->ppaddr, $op->targ, $op->type; %s (0x%lx) op_next 0x%x op_sibling 0x%x op_ppaddr %s op_targ %d op_type %d EOT if ($] > 5.009) { printf <<'EOT', $op->opt, $op->static; op_opt %d op_static %d EOT } else { printf <<'EOT', $op->seq; op_seq %d EOT } printf <<'EOT', $op->flags, $op->private; op_flags %d op_private %d EOT } sub B::UNOP::debug { my ($op) = @_; $op->B::OP::debug(); printf "\top_first\t0x%x\n", ${$op->first}; } sub B::BINOP::debug { my ($op) = @_; $op->B::UNOP::debug(); printf "\top_last\t\t0x%x\n", ${$op->last}; } sub B::LOOP::debug { my ($op) = @_; $op->B::BINOP::debug(); printf <<'EOT', ${$op->redoop}, ${$op->nextop}, ${$op->lastop}; op_redoop 0x%x op_nextop 0x%x op_lastop 0x%x EOT } sub B::LOGOP::debug { my ($op) = @_; $op->B::UNOP::debug(); printf "\top_other\t0x%x\n", ${$op->other}; } sub B::LISTOP::debug { my ($op) = @_; $op->B::BINOP::debug(); printf "\top_children\t%d\n", $op->children; } sub B::PMOP::debug { my ($op) = @_; $op->B::LISTOP::debug(); printf "\top_pmreplroot\t0x%x\n", ${$op->pmreplroot}; printf "\top_pmreplstart\t0x%x\n", ${$op->pmreplstart}; printf "\top_pmnext\t0x%x\n", ${$op->pmnext}; printf "\top_pmregexp->precomp\t%s\n", cstring($op->precomp); printf "\top_pmflags\t0x%x\n", $op->pmflags; $op->pmreplroot->debug; } sub B::COP::debug { my ($op) = @_; $op->B::OP::debug(); my $cop_io = class($op->io) eq 'SPECIAL' ? '' : $op->io->as_string; printf <<'EOT', $op->label, $op->stashpv, $op->file, $op->cop_seq, $op->arybase, $op->line, ${$op->warnings}, cstring($cop_io); cop_label %s cop_stashpv %s cop_file %s cop_seq %d cop_arybase %d cop_line %d cop_warnings 0x%x cop_io %s EOT } sub B::SVOP::debug { my ($op) = @_; $op->B::OP::debug(); printf "\top_sv\t\t0x%x\n", ${$op->sv}; $op->sv->debug; } sub B::PVOP::debug { my ($op) = @_; $op->B::OP::debug(); printf "\top_pv\t\t%s\n", cstring($op->pv); } sub B::PADOP::debug { my ($op) = @_; $op->B::OP::debug(); printf "\top_padix\t\t%ld\n", $op->padix; } sub B::NULL::debug { my ($sv) = @_; if ($$sv == ${sv_undef()}) { print "&sv_undef\n"; } else { printf "NULL (0x%x)\n", $$sv; } } sub B::SV::debug { my ($sv) = @_; if (!$$sv) { print class($sv), " = NULL\n"; return; } printf <<'EOT', class($sv), $$sv, $sv->REFCNT, $sv->FLAGS; %s (0x%x) REFCNT %d FLAGS 0x%x EOT } sub B::RV::debug { my ($rv) = @_; B::SV::debug($rv); printf <<'EOT', ${$rv->RV}; RV 0x%x EOT $rv->RV->debug; } sub B::PV::debug { my ($sv) = @_; $sv->B::SV::debug(); my $pv = $sv->PV(); printf <<'EOT', cstring($pv), length($pv); xpv_pv %s xpv_cur %d EOT } sub B::IV::debug { my ($sv) = @_; $sv->B::SV::debug(); printf "\txiv_iv\t\t%d\n", $sv->IV; } sub B::NV::debug { my ($sv) = @_; $sv->B::IV::debug(); printf "\txnv_nv\t\t%s\n", $sv->NV; } sub B::PVIV::debug { my ($sv) = @_; $sv->B::PV::debug(); printf "\txiv_iv\t\t%d\n", $sv->IV; } sub B::PVNV::debug { my ($sv) = @_; $sv->B::PVIV::debug(); printf "\txnv_nv\t\t%s\n", $sv->NV; } sub B::PVLV::debug { my ($sv) = @_; $sv->B::PVNV::debug(); printf "\txlv_targoff\t%d\n", $sv->TARGOFF; printf "\txlv_targlen\t%u\n", $sv->TARGLEN; printf "\txlv_type\t%s\n", cstring(chr($sv->TYPE)); } sub B::BM::debug { my ($sv) = @_; $sv->B::PVNV::debug(); printf "\txbm_useful\t%d\n", $sv->USEFUL; printf "\txbm_previous\t%u\n", $sv->PREVIOUS; printf "\txbm_rare\t%s\n", cstring(chr($sv->RARE)); } sub B::CV::debug { my ($sv) = @_; $sv->B::PVNV::debug(); my ($stash) = $sv->STASH; my ($start) = $sv->START; my ($root) = $sv->ROOT; my ($padlist) = $sv->PADLIST; my ($file) = $sv->FILE; my ($gv) = $sv->GV; printf <<'EOT', $$stash, $$start, $$root, $$gv, $file, $sv->DEPTH, $padlist, ${$sv->OUTSIDE}, $sv->OUTSIDE_SEQ; STASH 0x%x START 0x%x ROOT 0x%x GV 0x%x FILE %s DEPTH %d PADLIST 0x%x OUTSIDE 0x%x OUTSIDE_SEQ %d EOT $start->debug if $start; $root->debug if $root; $gv->debug if $gv; $padlist->debug if $padlist; } sub B::AV::debug { my ($av) = @_; $av->B::SV::debug; my(@array) = $av->ARRAY; print "\tARRAY\t\t(", join(", ", map("0x" . $$_, @array)), ")\n"; printf <<'EOT', scalar(@array), $av->MAX, $av->OFF, $av->AvFLAGS; FILL %d MAX %d OFF %d AvFLAGS %d EOT } sub B::GV::debug { my ($gv) = @_; if ($done_gv{$$gv}++) { printf "GV %s::%s\n", $gv->STASH->NAME, $gv->SAFENAME; return; } my ($sv) = $gv->SV; my ($av) = $gv->AV; my ($cv) = $gv->CV; $gv->B::SV::debug; printf <<'EOT', $gv->SAFENAME, $gv->STASH->NAME, $gv->STASH, $$sv, $gv->GvREFCNT, $gv->FORM, $$av, ${$gv->HV}, ${$gv->EGV}, $$cv, $gv->CVGEN, $gv->LINE, $gv->FILE, $gv->GvFLAGS; NAME %s STASH %s (0x%x) SV 0x%x GvREFCNT %d FORM 0x%x AV 0x%x HV 0x%x EGV 0x%x CV 0x%x CVGEN %d LINE %d FILE %s GvFLAGS 0x%x EOT $sv->debug if $sv; $av->debug if $av; $cv->debug if $cv; } sub B::SPECIAL::debug { my $sv = shift; print $specialsv_name[$$sv], "\n"; } sub compile { my $order = shift; B::clearsym(); if ($order && $order eq "exec") { return sub { walkoptree_exec(main_start, "debug") } } else { return sub { walkoptree(main_root, "debug") } } } 1; __END__ =head1 NAME B::Debug - Walk Perl syntax tree, printing debug info about ops =head1 SYNOPSIS perl -MO=Debug[,OPTIONS] foo.pl =head1 DESCRIPTION See F. =head1 AUTHOR Malcolm Beattie, C =cut