Mercurial > hg > CbC > CbC_gcc
comparison gcc/gdbhooks.py @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children | 1830386684a0 |
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111:04ced10e8804 | 131:84e7813d76e9 |
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1 # Python hooks for gdb for debugging GCC | 1 # Python hooks for gdb for debugging GCC |
2 # Copyright (C) 2013-2017 Free Software Foundation, Inc. | 2 # Copyright (C) 2013-2018 Free Software Foundation, Inc. |
3 | 3 |
4 # Contributed by David Malcolm <dmalcolm@redhat.com> | 4 # Contributed by David Malcolm <dmalcolm@redhat.com> |
5 | 5 |
6 # This file is part of GCC. | 6 # This file is part of GCC. |
7 | 7 |
103 it's a quick way of getting lots of debuggability quickly. | 103 it's a quick way of getting lots of debuggability quickly. |
104 | 104 |
105 Callgraph nodes are printed with the name of the function decl, if | 105 Callgraph nodes are printed with the name of the function decl, if |
106 available: | 106 available: |
107 (gdb) frame 5 | 107 (gdb) frame 5 |
108 #5 0x00000000006c288a in expand_function (node=<cgraph_node* 0x7ffff0312720 "foo">) at ../../src/gcc/cgraphunit.c:1594 | 108 #5 0x00000000006c288a in expand_function (node=<cgraph_node* 0x7ffff0312720 "foo"/12345>) at ../../src/gcc/cgraphunit.c:1594 |
109 1594 execute_pass_list (g->get_passes ()->all_passes); | 109 1594 execute_pass_list (g->get_passes ()->all_passes); |
110 (gdb) p node | 110 (gdb) p node |
111 $1 = <cgraph_node* 0x7ffff0312720 "foo"> | 111 $1 = <cgraph_node* 0x7ffff0312720 "foo"/12345> |
112 | |
113 Similarly for symtab_node and varpool_node classes. | |
114 | |
115 Cgraph edges are printed with the name of caller and callee: | |
116 (gdb) p this->callees | |
117 $4 = <cgraph_edge* 0x7fffe25aa000 (<cgraph_node * 0x7fffe62b22e0 "_GLOBAL__sub_I__ZN5Pooma5pinfoE"/19660> -> <cgraph_node * 0x7fffe620f730 "__static_initialization_and_destruction_1"/19575>)> | |
118 | |
119 IPA reference follow very similar format: | |
120 (gdb) Value returned is $5 = <ipa_ref* 0x7fffefcb80c8 (<symtab_node * 0x7ffff562f000 "__dt_base "/875> -> <symtab_node * 0x7fffe795f000 "_ZTVN6Smarts8RunnableE"/16056>:IPA_REF_ADDR)> | |
112 | 121 |
113 vec<> pointers are printed as the address followed by the elements in | 122 vec<> pointers are printed as the address followed by the elements in |
114 braces. Here's a length 2 vec: | 123 braces. Here's a length 2 vec: |
115 (gdb) p bb->preds | 124 (gdb) p bb->preds |
116 $18 = 0x7ffff0428b68 = {<edge 0x7ffff044d380 (3 -> 5)>, <edge 0x7ffff044d3b8 (4 -> 5)>} | 125 $18 = 0x7ffff0428b68 = {<edge 0x7ffff044d380 (3 -> 5)>, <edge 0x7ffff044d3b8 (4 -> 5)>} |
243 | 252 |
244 ###################################################################### | 253 ###################################################################### |
245 # Callgraph pretty-printers | 254 # Callgraph pretty-printers |
246 ###################################################################### | 255 ###################################################################### |
247 | 256 |
248 class CGraphNodePrinter: | 257 class SymtabNodePrinter: |
249 def __init__(self, gdbval): | 258 def __init__(self, gdbval): |
250 self.gdbval = gdbval | 259 self.gdbval = gdbval |
251 | 260 |
252 def to_string (self): | 261 def to_string (self): |
253 result = '<cgraph_node* 0x%x' % intptr(self.gdbval) | 262 t = str(self.gdbval.type) |
263 result = '<%s 0x%x' % (t, intptr(self.gdbval)) | |
254 if intptr(self.gdbval): | 264 if intptr(self.gdbval): |
255 # symtab_node::name calls lang_hooks.decl_printable_name | 265 # symtab_node::name calls lang_hooks.decl_printable_name |
256 # default implementation (lhd_decl_printable_name) is: | 266 # default implementation (lhd_decl_printable_name) is: |
257 # return IDENTIFIER_POINTER (DECL_NAME (decl)); | 267 # return IDENTIFIER_POINTER (DECL_NAME (decl)); |
258 tree_decl = Tree(self.gdbval['decl']) | 268 tree_decl = Tree(self.gdbval['decl']) |
259 result += ' "%s"' % tree_decl.DECL_NAME().IDENTIFIER_POINTER() | 269 result += ' "%s"/%d' % (tree_decl.DECL_NAME().IDENTIFIER_POINTER(), self.gdbval['order']) |
270 result += '>' | |
271 return result | |
272 | |
273 class CgraphEdgePrinter: | |
274 def __init__(self, gdbval): | |
275 self.gdbval = gdbval | |
276 | |
277 def to_string (self): | |
278 result = '<cgraph_edge* 0x%x' % intptr(self.gdbval) | |
279 if intptr(self.gdbval): | |
280 src = SymtabNodePrinter(self.gdbval['caller']).to_string() | |
281 dest = SymtabNodePrinter(self.gdbval['callee']).to_string() | |
282 result += ' (%s -> %s)' % (src, dest) | |
283 result += '>' | |
284 return result | |
285 | |
286 class IpaReferencePrinter: | |
287 def __init__(self, gdbval): | |
288 self.gdbval = gdbval | |
289 | |
290 def to_string (self): | |
291 result = '<ipa_ref* 0x%x' % intptr(self.gdbval) | |
292 if intptr(self.gdbval): | |
293 src = SymtabNodePrinter(self.gdbval['referring']).to_string() | |
294 dest = SymtabNodePrinter(self.gdbval['referred']).to_string() | |
295 result += ' (%s -> %s:%s)' % (src, dest, str(self.gdbval['use'])) | |
260 result += '>' | 296 result += '>' |
261 return result | 297 return result |
262 | 298 |
263 ###################################################################### | 299 ###################################################################### |
264 # Dwarf DIE pretty-printers | 300 # Dwarf DIE pretty-printers |
501 | 537 |
502 def build_pretty_printer(): | 538 def build_pretty_printer(): |
503 pp = GdbPrettyPrinters('gcc') | 539 pp = GdbPrettyPrinters('gcc') |
504 pp.add_printer_for_types(['tree'], | 540 pp.add_printer_for_types(['tree'], |
505 'tree', TreePrinter) | 541 'tree', TreePrinter) |
506 pp.add_printer_for_types(['cgraph_node *'], | 542 pp.add_printer_for_types(['cgraph_node *', 'varpool_node *', 'symtab_node *'], |
507 'cgraph_node', CGraphNodePrinter) | 543 'symtab_node', SymtabNodePrinter) |
544 pp.add_printer_for_types(['cgraph_edge *'], | |
545 'cgraph_edge', CgraphEdgePrinter) | |
546 pp.add_printer_for_types(['ipa_ref *'], | |
547 'ipa_ref', IpaReferencePrinter) | |
508 pp.add_printer_for_types(['dw_die_ref'], | 548 pp.add_printer_for_types(['dw_die_ref'], |
509 'dw_die_ref', DWDieRefPrinter) | 549 'dw_die_ref', DWDieRefPrinter) |
510 pp.add_printer_for_types(['gimple', 'gimple *', | 550 pp.add_printer_for_types(['gimple', 'gimple *', |
511 | 551 |
512 # Keep this in the same order as gimple.def: | 552 # Keep this in the same order as gimple.def: |