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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 | |
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36 | sub B::LOOP::debug { |
37 | my ($op) = @_; |
38 | $op->B::BINOP::debug(); |
39 | printf <<'EOT', ${$op->redoop}, ${$op->nextop}, ${$op->lastop}; |
40 | op_redoop 0x%x |
41 | op_nextop 0x%x |
42 | op_lastop 0x%x |
43 | EOT |
44 | } |
45 | |
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46 | sub B::LOGOP::debug { |
47 | my ($op) = @_; |
48 | $op->B::UNOP::debug(); |
49 | printf "\top_other\t0x%x\n", ${$op->other}; |
50 | } |
51 | |
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52 | sub B::LISTOP::debug { |
53 | my ($op) = @_; |
54 | $op->B::BINOP::debug(); |
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55 | printf "\top_children\t%d\n", $op->children; |
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56 | } |
57 | |
58 | sub B::PMOP::debug { |
59 | my ($op) = @_; |
60 | $op->B::LISTOP::debug(); |
61 | printf "\top_pmreplroot\t0x%x\n", ${$op->pmreplroot}; |
62 | printf "\top_pmreplstart\t0x%x\n", ${$op->pmreplstart}; |
63 | printf "\top_pmnext\t0x%x\n", ${$op->pmnext}; |
64 | printf "\top_pmregexp->precomp\t%s\n", cstring($op->precomp); |
65 | printf "\top_pmflags\t0x%x\n", $op->pmflags; |
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66 | $op->pmreplroot->debug; |
67 | } |
68 | |
69 | sub B::COP::debug { |
70 | my ($op) = @_; |
71 | $op->B::OP::debug(); |
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72 | printf <<'EOT', $op->label, $op->stashpv, $op->file, $op->seq, $op->arybase, $op->line, ${$op->warnings}; |
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73 | cop_label %s |
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74 | cop_stashpv %s |
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75 | cop_file %s |
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76 | cop_seq %d |
77 | cop_arybase %d |
78 | cop_line %d |
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79 | cop_warnings 0x%x |
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80 | EOT |
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81 | } |
82 | |
83 | sub B::SVOP::debug { |
84 | my ($op) = @_; |
85 | $op->B::OP::debug(); |
86 | printf "\top_sv\t\t0x%x\n", ${$op->sv}; |
87 | $op->sv->debug; |
88 | } |
89 | |
90 | sub B::PVOP::debug { |
91 | my ($op) = @_; |
92 | $op->B::OP::debug(); |
93 | printf "\top_pv\t\t0x%x\n", $op->pv; |
94 | } |
95 | |
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96 | sub B::PADOP::debug { |
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97 | my ($op) = @_; |
98 | $op->B::OP::debug(); |
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99 | printf "\top_padix\t\t%ld\n", $op->padix; |
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100 | } |
101 | |
102 | sub B::CVOP::debug { |
103 | my ($op) = @_; |
104 | $op->B::OP::debug(); |
105 | printf "\top_cv\t\t0x%x\n", ${$op->cv}; |
106 | } |
107 | |
108 | sub B::NULL::debug { |
109 | my ($sv) = @_; |
110 | if ($$sv == ${sv_undef()}) { |
111 | print "&sv_undef\n"; |
112 | } else { |
113 | printf "NULL (0x%x)\n", $$sv; |
114 | } |
115 | } |
116 | |
117 | sub B::SV::debug { |
118 | my ($sv) = @_; |
119 | if (!$$sv) { |
120 | print class($sv), " = NULL\n"; |
121 | return; |
122 | } |
123 | printf <<'EOT', class($sv), $$sv, $sv->REFCNT, $sv->FLAGS; |
124 | %s (0x%x) |
125 | REFCNT %d |
126 | FLAGS 0x%x |
127 | EOT |
128 | } |
129 | |
130 | sub B::PV::debug { |
131 | my ($sv) = @_; |
132 | $sv->B::SV::debug(); |
133 | my $pv = $sv->PV(); |
134 | printf <<'EOT', cstring($pv), length($pv); |
135 | xpv_pv %s |
136 | xpv_cur %d |
137 | EOT |
138 | } |
139 | |
140 | sub B::IV::debug { |
141 | my ($sv) = @_; |
142 | $sv->B::SV::debug(); |
143 | printf "\txiv_iv\t\t%d\n", $sv->IV; |
144 | } |
145 | |
146 | sub B::NV::debug { |
147 | my ($sv) = @_; |
148 | $sv->B::IV::debug(); |
149 | printf "\txnv_nv\t\t%s\n", $sv->NV; |
150 | } |
151 | |
152 | sub B::PVIV::debug { |
153 | my ($sv) = @_; |
154 | $sv->B::PV::debug(); |
155 | printf "\txiv_iv\t\t%d\n", $sv->IV; |
156 | } |
157 | |
158 | sub B::PVNV::debug { |
159 | my ($sv) = @_; |
160 | $sv->B::PVIV::debug(); |
161 | printf "\txnv_nv\t\t%s\n", $sv->NV; |
162 | } |
163 | |
164 | sub B::PVLV::debug { |
165 | my ($sv) = @_; |
166 | $sv->B::PVNV::debug(); |
167 | printf "\txlv_targoff\t%d\n", $sv->TARGOFF; |
168 | printf "\txlv_targlen\t%u\n", $sv->TARGLEN; |
169 | printf "\txlv_type\t%s\n", cstring(chr($sv->TYPE)); |
170 | } |
171 | |
172 | sub B::BM::debug { |
173 | my ($sv) = @_; |
174 | $sv->B::PVNV::debug(); |
175 | printf "\txbm_useful\t%d\n", $sv->USEFUL; |
176 | printf "\txbm_previous\t%u\n", $sv->PREVIOUS; |
177 | printf "\txbm_rare\t%s\n", cstring(chr($sv->RARE)); |
178 | } |
179 | |
180 | sub B::CV::debug { |
181 | my ($sv) = @_; |
182 | $sv->B::PVNV::debug(); |
183 | my ($stash) = $sv->STASH; |
184 | my ($start) = $sv->START; |
185 | my ($root) = $sv->ROOT; |
186 | my ($padlist) = $sv->PADLIST; |
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187 | my ($file) = $sv->FILE; |
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188 | my ($gv) = $sv->GV; |
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189 | printf <<'EOT', $$stash, $$start, $$root, $$gv, $file, $sv->DEPTH, $padlist, ${$sv->OUTSIDE}; |
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190 | STASH 0x%x |
191 | START 0x%x |
192 | ROOT 0x%x |
193 | GV 0x%x |
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194 | FILE %s |
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195 | DEPTH %d |
196 | PADLIST 0x%x |
197 | OUTSIDE 0x%x |
198 | EOT |
199 | $start->debug if $start; |
200 | $root->debug if $root; |
201 | $gv->debug if $gv; |
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202 | $padlist->debug if $padlist; |
203 | } |
204 | |
205 | sub B::AV::debug { |
206 | my ($av) = @_; |
207 | $av->B::SV::debug; |
208 | my(@array) = $av->ARRAY; |
209 | print "\tARRAY\t\t(", join(", ", map("0x" . $$_, @array)), ")\n"; |
210 | printf <<'EOT', scalar(@array), $av->MAX, $av->OFF, $av->AvFLAGS; |
211 | FILL %d |
212 | MAX %d |
213 | OFF %d |
214 | AvFLAGS %d |
215 | EOT |
216 | } |
217 | |
218 | sub B::GV::debug { |
219 | my ($gv) = @_; |
220 | if ($done_gv{$$gv}++) { |
002b978b |
221 | printf "GV %s::%s\n", $gv->STASH->NAME, $gv->SAFENAME; |
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222 | return; |
223 | } |
224 | my ($sv) = $gv->SV; |
225 | my ($av) = $gv->AV; |
226 | my ($cv) = $gv->CV; |
227 | $gv->B::SV::debug; |
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228 | printf <<'EOT', $gv->SAFENAME, $gv->STASH->NAME, $gv->STASH, $$sv, $gv->GvREFCNT, $gv->FORM, $$av, ${$gv->HV}, ${$gv->EGV}, $$cv, $gv->CVGEN, $gv->LINE, $gv->FILE, $gv->GvFLAGS; |
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229 | NAME %s |
230 | STASH %s (0x%x) |
231 | SV 0x%x |
232 | GvREFCNT %d |
233 | FORM 0x%x |
234 | AV 0x%x |
235 | HV 0x%x |
236 | EGV 0x%x |
237 | CV 0x%x |
238 | CVGEN %d |
239 | LINE %d |
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240 | FILE %s |
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241 | GvFLAGS 0x%x |
242 | EOT |
243 | $sv->debug if $sv; |
244 | $av->debug if $av; |
245 | $cv->debug if $cv; |
246 | } |
247 | |
248 | sub B::SPECIAL::debug { |
249 | my $sv = shift; |
250 | print $specialsv_name[$$sv], "\n"; |
251 | } |
252 | |
253 | sub compile { |
254 | my $order = shift; |
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255 | B::clearsym(); |
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256 | if ($order && $order eq "exec") { |
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257 | return sub { walkoptree_exec(main_start, "debug") } |
258 | } else { |
259 | return sub { walkoptree(main_root, "debug") } |
260 | } |
261 | } |
262 | |
263 | 1; |
7f20e9dd |
264 | |
265 | __END__ |
266 | |
267 | =head1 NAME |
268 | |
269 | B::Debug - Walk Perl syntax tree, printing debug info about ops |
270 | |
271 | =head1 SYNOPSIS |
272 | |
273 | perl -MO=Debug[,OPTIONS] foo.pl |
274 | |
275 | =head1 DESCRIPTION |
276 | |
277 | See F<ext/B/README>. |
278 | |
279 | =head1 AUTHOR |
280 | |
281 | Malcolm Beattie, C<mbeattie@sable.ox.ac.uk> |
282 | |
283 | =cut |