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1 | package B::Debug; |
2 | use strict; |
3 | use B qw(peekop class walkoptree walkoptree_exec |
4 | main_start main_root cstring sv_undef); |
5 | use B::Asmdata qw(@specialsv_name); |
6 | |
7 | my %done_gv; |
8 | |
9 | sub B::OP::debug { |
10 | my ($op) = @_; |
11 | printf <<'EOT', class($op), $$op, ${$op->next}, ${$op->sibling}, $op->ppaddr, $op->targ, $op->type, $op->seq, $op->flags, $op->private; |
12 | %s (0x%lx) |
13 | op_next 0x%x |
14 | op_sibling 0x%x |
15 | op_ppaddr %s |
16 | op_targ %d |
17 | op_type %d |
18 | op_seq %d |
19 | op_flags %d |
20 | op_private %d |
21 | EOT |
22 | } |
23 | |
24 | sub B::UNOP::debug { |
25 | my ($op) = @_; |
26 | $op->B::OP::debug(); |
27 | printf "\top_first\t0x%x\n", ${$op->first}; |
28 | } |
29 | |
30 | sub B::BINOP::debug { |
31 | my ($op) = @_; |
32 | $op->B::UNOP::debug(); |
33 | printf "\top_last\t\t0x%x\n", ${$op->last}; |
34 | } |
35 | |
36 | sub B::LOGOP::debug { |
37 | my ($op) = @_; |
38 | $op->B::UNOP::debug(); |
39 | printf "\top_other\t0x%x\n", ${$op->other}; |
40 | } |
41 | |
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42 | sub B::LISTOP::debug { |
43 | my ($op) = @_; |
44 | $op->B::BINOP::debug(); |
45 | printf "\top_children\t%d\n", $op->children; |
46 | } |
47 | |
48 | sub B::PMOP::debug { |
49 | my ($op) = @_; |
50 | $op->B::LISTOP::debug(); |
51 | printf "\top_pmreplroot\t0x%x\n", ${$op->pmreplroot}; |
52 | printf "\top_pmreplstart\t0x%x\n", ${$op->pmreplstart}; |
53 | printf "\top_pmnext\t0x%x\n", ${$op->pmnext}; |
54 | printf "\top_pmregexp->precomp\t%s\n", cstring($op->precomp); |
55 | printf "\top_pmflags\t0x%x\n", $op->pmflags; |
56 | $op->pmshort->debug; |
57 | $op->pmreplroot->debug; |
58 | } |
59 | |
60 | sub B::COP::debug { |
61 | my ($op) = @_; |
62 | $op->B::OP::debug(); |
63 | my ($filegv) = $op->filegv; |
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64 | printf <<'EOT', $op->label, ${$op->stash}, $$filegv, $op->seq, $op->arybase, $op->line, ${$op->warnings}; |
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65 | cop_label %s |
66 | cop_stash 0x%x |
67 | cop_filegv 0x%x |
68 | cop_seq %d |
69 | cop_arybase %d |
70 | cop_line %d |
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71 | cop_warnings 0x%x |
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72 | EOT |
73 | $filegv->debug; |
74 | } |
75 | |
76 | sub B::SVOP::debug { |
77 | my ($op) = @_; |
78 | $op->B::OP::debug(); |
79 | printf "\top_sv\t\t0x%x\n", ${$op->sv}; |
80 | $op->sv->debug; |
81 | } |
82 | |
83 | sub B::PVOP::debug { |
84 | my ($op) = @_; |
85 | $op->B::OP::debug(); |
86 | printf "\top_pv\t\t0x%x\n", $op->pv; |
87 | } |
88 | |
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89 | sub B::PADOP::debug { |
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90 | my ($op) = @_; |
91 | $op->B::OP::debug(); |
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92 | printf "\top_padix\t\t%ld\n", $op->padix; |
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93 | } |
94 | |
95 | sub B::CVOP::debug { |
96 | my ($op) = @_; |
97 | $op->B::OP::debug(); |
98 | printf "\top_cv\t\t0x%x\n", ${$op->cv}; |
99 | } |
100 | |
101 | sub B::NULL::debug { |
102 | my ($sv) = @_; |
103 | if ($$sv == ${sv_undef()}) { |
104 | print "&sv_undef\n"; |
105 | } else { |
106 | printf "NULL (0x%x)\n", $$sv; |
107 | } |
108 | } |
109 | |
110 | sub B::SV::debug { |
111 | my ($sv) = @_; |
112 | if (!$$sv) { |
113 | print class($sv), " = NULL\n"; |
114 | return; |
115 | } |
116 | printf <<'EOT', class($sv), $$sv, $sv->REFCNT, $sv->FLAGS; |
117 | %s (0x%x) |
118 | REFCNT %d |
119 | FLAGS 0x%x |
120 | EOT |
121 | } |
122 | |
123 | sub B::PV::debug { |
124 | my ($sv) = @_; |
125 | $sv->B::SV::debug(); |
126 | my $pv = $sv->PV(); |
127 | printf <<'EOT', cstring($pv), length($pv); |
128 | xpv_pv %s |
129 | xpv_cur %d |
130 | EOT |
131 | } |
132 | |
133 | sub B::IV::debug { |
134 | my ($sv) = @_; |
135 | $sv->B::SV::debug(); |
136 | printf "\txiv_iv\t\t%d\n", $sv->IV; |
137 | } |
138 | |
139 | sub B::NV::debug { |
140 | my ($sv) = @_; |
141 | $sv->B::IV::debug(); |
142 | printf "\txnv_nv\t\t%s\n", $sv->NV; |
143 | } |
144 | |
145 | sub B::PVIV::debug { |
146 | my ($sv) = @_; |
147 | $sv->B::PV::debug(); |
148 | printf "\txiv_iv\t\t%d\n", $sv->IV; |
149 | } |
150 | |
151 | sub B::PVNV::debug { |
152 | my ($sv) = @_; |
153 | $sv->B::PVIV::debug(); |
154 | printf "\txnv_nv\t\t%s\n", $sv->NV; |
155 | } |
156 | |
157 | sub B::PVLV::debug { |
158 | my ($sv) = @_; |
159 | $sv->B::PVNV::debug(); |
160 | printf "\txlv_targoff\t%d\n", $sv->TARGOFF; |
161 | printf "\txlv_targlen\t%u\n", $sv->TARGLEN; |
162 | printf "\txlv_type\t%s\n", cstring(chr($sv->TYPE)); |
163 | } |
164 | |
165 | sub B::BM::debug { |
166 | my ($sv) = @_; |
167 | $sv->B::PVNV::debug(); |
168 | printf "\txbm_useful\t%d\n", $sv->USEFUL; |
169 | printf "\txbm_previous\t%u\n", $sv->PREVIOUS; |
170 | printf "\txbm_rare\t%s\n", cstring(chr($sv->RARE)); |
171 | } |
172 | |
173 | sub B::CV::debug { |
174 | my ($sv) = @_; |
175 | $sv->B::PVNV::debug(); |
176 | my ($stash) = $sv->STASH; |
177 | my ($start) = $sv->START; |
178 | my ($root) = $sv->ROOT; |
179 | my ($padlist) = $sv->PADLIST; |
180 | my ($gv) = $sv->GV; |
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181 | printf <<'EOT', $$stash, $$start, $$root, $$gv, $sv->DEPTH, $padlist, ${$sv->OUTSIDE}; |
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182 | STASH 0x%x |
183 | START 0x%x |
184 | ROOT 0x%x |
185 | GV 0x%x |
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186 | DEPTH %d |
187 | PADLIST 0x%x |
188 | OUTSIDE 0x%x |
189 | EOT |
190 | $start->debug if $start; |
191 | $root->debug if $root; |
192 | $gv->debug if $gv; |
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193 | $padlist->debug if $padlist; |
194 | } |
195 | |
196 | sub B::AV::debug { |
197 | my ($av) = @_; |
198 | $av->B::SV::debug; |
199 | my(@array) = $av->ARRAY; |
200 | print "\tARRAY\t\t(", join(", ", map("0x" . $$_, @array)), ")\n"; |
201 | printf <<'EOT', scalar(@array), $av->MAX, $av->OFF, $av->AvFLAGS; |
202 | FILL %d |
203 | MAX %d |
204 | OFF %d |
205 | AvFLAGS %d |
206 | EOT |
207 | } |
208 | |
209 | sub B::GV::debug { |
210 | my ($gv) = @_; |
211 | if ($done_gv{$$gv}++) { |
212 | printf "GV %s::%s\n", $gv->STASH->NAME, $gv->NAME; |
213 | return; |
214 | } |
215 | my ($sv) = $gv->SV; |
216 | my ($av) = $gv->AV; |
217 | my ($cv) = $gv->CV; |
218 | $gv->B::SV::debug; |
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219 | printf <<'EOT', $gv->NAME, $gv->STASH->NAME, $gv->STASH, $$sv, $gv->GvREFCNT, $gv->FORM, $$av, ${$gv->HV}, ${$gv->EGV}, $$cv, $gv->CVGEN, $gv->LINE, $gv->FILE, $gv->GvFLAGS; |
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220 | NAME %s |
221 | STASH %s (0x%x) |
222 | SV 0x%x |
223 | GvREFCNT %d |
224 | FORM 0x%x |
225 | AV 0x%x |
226 | HV 0x%x |
227 | EGV 0x%x |
228 | CV 0x%x |
229 | CVGEN %d |
230 | LINE %d |
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231 | FILE %s |
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232 | GvFLAGS 0x%x |
233 | EOT |
234 | $sv->debug if $sv; |
235 | $av->debug if $av; |
236 | $cv->debug if $cv; |
237 | } |
238 | |
239 | sub B::SPECIAL::debug { |
240 | my $sv = shift; |
241 | print $specialsv_name[$$sv], "\n"; |
242 | } |
243 | |
244 | sub compile { |
245 | my $order = shift; |
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246 | B::clearsym(); |
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247 | if ($order eq "exec") { |
248 | return sub { walkoptree_exec(main_start, "debug") } |
249 | } else { |
250 | return sub { walkoptree(main_root, "debug") } |
251 | } |
252 | } |
253 | |
254 | 1; |
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255 | |
256 | __END__ |
257 | |
258 | =head1 NAME |
259 | |
260 | B::Debug - Walk Perl syntax tree, printing debug info about ops |
261 | |
262 | =head1 SYNOPSIS |
263 | |
264 | perl -MO=Debug[,OPTIONS] foo.pl |
265 | |
266 | =head1 DESCRIPTION |
267 | |
268 | See F<ext/B/README>. |
269 | |
270 | =head1 AUTHOR |
271 | |
272 | Malcolm Beattie, C<mbeattie@sable.ox.ac.uk> |
273 | |
274 | =cut |