{{ message }}
forked from davidmalcolm/gcc-python-plugin
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathgcc-python.c
More file actions
1023 lines (843 loc) · 26.6 KB
/
Copy pathgcc-python.c
File metadata and controls
1023 lines (843 loc) · 26.6 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
Copyright 2011-2013, 2015 David Malcolm <dmalcolm@redhat.com>
Copyright 2011-2013, 2015 Red Hat, Inc.
This is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see
<http://www.gnu.org/licenses/>.
*/
#include <Python.h>
#include "gcc-python.h"
#include "gcc-python-closure.h"
#include "gcc-python-wrappers.h"
#include "gcc-c-api/gcc-location.h"
#include "gcc-c-api/gcc-variable.h"
#include "gcc-c-api/gcc-declaration.h"
#include "gcc-c-api/gcc-diagnostics.h"
#include "gcc-c-api/gcc-option.h"
int plugin_is_GPL_compatible;
#include "plugin-version.h"
#if 1
/* Ideally we wouldn't have these includes here: */
#if (GCC_VERSION >= 6000)
#include "cp/cp-tree.h" /* for cp_expr */
#endif
#include "cp/name-lookup.h" /* for global_namespace */
#include "tree.h"
#include "function.h"
#include "cgraph.h"
//#include "opts.h"
/* "maybe_get_identifier" was moved from tree.h to stringpool.h in 4.9 */
#if (GCC_VERSION >= 4009)
#include "stringpool.h"
#endif
/*
* Use an unqualified name here and rely on dual search paths to let the
* compiler find it. This deals with c-pragma.h moving to a
* subdirectory in newer versions of gcc.
*/
#include "c-pragma.h" /* for parse_in */
#endif
#if 0
#define LOG(msg) \
(void)fprintf(stderr, "%s:%i:%s\n", __FILE__, __LINE__, (msg))
#else
#define LOG(msg) ((void)0);
#endif
#define GCC_PYTHON_TRACE_ALL_EVENTS 0
#if GCC_PYTHON_TRACE_ALL_EVENTS
static const char* event_name[] = {
#define DEFEVENT(NAME) \
#NAME,
# include "plugin.def"
# undef DEFEVENT
};
static void
trace_callback(enum plugin_event event, void *gcc_data, void *user_data)
{
fprintf(stderr,
"%s:%i:trace_callback(%s, %p, %p)\n",
__FILE__, __LINE__, event_name[event], gcc_data, user_data);
fprintf(stderr, " cfun:%p\n", cfun);
}
#define DEFEVENT(NAME) \
static void trace_callback_for_##NAME(void *gcc_data, void *user_data) \
{ \
trace_callback(NAME, gcc_data, user_data); \
}
# include "plugin.def"
# undef DEFEVENT
#endif /* GCC_PYTHON_TRACE_ALL_EVENTS */
/*
Weakly import parse_in; it will be non-NULL in the C and C++ frontend,
but it's not available lto1 (link-time optimization)
*/
__typeof__ (parse_in) parse_in __attribute__ ((weak));
static PyObject*
PyGcc_define_macro(PyObject *self,
PyObject *args, PyObject *kwargs)
{
const char *macro;
const char *keywords[] = {"macro",
NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwargs,
"s:define_preprocessor_name", (char**)keywords,
¯o)) {
return NULL;
}
if (0) {
fprintf(stderr, "gcc.define_macro(\"%s\")\n", macro);
}
if (!parse_in) {
return PyErr_Format(PyExc_ValueError,
"gcc.define_macro(\"%s\") called without a compilation unit",
macro);
}
if (!PyGcc_IsWithinEvent(NULL)) {
return PyErr_Format(PyExc_ValueError,
"gcc.define_macro(\"%s\") called from outside an event callback",
macro);
}
cpp_define (parse_in, macro);
Py_RETURN_NONE;
}
static PyObject *
PyGcc_set_location(PyObject *self, PyObject *args)
{
PyGccLocation *loc_obj;
if (!PyArg_ParseTuple(args,
"O!:set_location",
&PyGccLocation_TypeObj, &loc_obj)) {
return NULL;
}
gcc_set_input_location(loc_obj->loc);
Py_RETURN_NONE;
}
static bool add_option_to_list(gcc_option opt, void *user_data)
{
PyObject *result = (PyObject*)user_data;
PyObject *obj_opt;
obj_opt = PyGccOption_New(opt);
if (!obj_opt) {
return true;
}
if (-1 == PyList_Append(result, obj_opt)) {
Py_DECREF(obj_opt);
return true;
}
/* Success: */
Py_DECREF(obj_opt);
return false;
}
static PyObject *
PyGcc_get_option_list(PyObject *self, PyObject *args)
{
PyObject *result;
result = PyList_New(0);
if (!result) {
return NULL;
}
if (gcc_for_each_option(add_option_to_list, result)) {
Py_DECREF(result);
return NULL;
}
/* Success: */
return result;
}
static bool add_option_to_dict(gcc_option opt, void *user_data)
{
PyObject *dict = (PyObject*)user_data;
PyObject *opt_obj;
opt_obj = PyGccOption_New(opt);
if (!opt_obj) {
return true;
}
if (-1 == PyDict_SetItemString(dict,
gcc_option_get_text(opt),
opt_obj)) {
Py_DECREF(opt_obj);
return true;
}
Py_DECREF(opt_obj);
return false;
}
static PyObject *
PyGcc_get_option_dict(PyObject *self, PyObject *args)
{
PyObject *dict;
dict = PyDict_New();
if (!dict) {
return NULL;
}
if (gcc_for_each_option(add_option_to_dict, dict)) {
Py_DECREF(dict);
return NULL;
}
/* Success: */
return dict;
}
/* Function has been removed from GCC 10. */
#if (GCC_VERSION < 10000)
static PyObject *
PyGcc_get_parameters(PyObject *self, PyObject *args)
{
PyObject *dict;
size_t i;
dict = PyDict_New();
if (!dict) {
goto error;
}
for (i = 0; i < get_num_compiler_params(); i++) {
PyObject *param_obj = PyGccParameter_New((compiler_param)i);
if (!param_obj) {
goto error;
}
if (-1 == PyDict_SetItemString(dict,
compiler_params[i].option,
param_obj)) {
Py_DECREF(param_obj);
goto error;
}
Py_DECREF(param_obj);
}
return dict;
error:
Py_XDECREF(dict);
return NULL;
}
#endif
IMPL_APPENDER(add_var_to_list,
gcc_variable,
PyGccVariable_New)
static PyObject *
PyGcc_get_variables(PyObject *self, PyObject *args)
{
IMPL_GLOBAL_LIST_MAKER(gcc_for_each_variable,
add_var_to_list)
}
static PyObject *
PyGcc_maybe_get_identifier(PyObject *self, PyObject *args)
{
const char *str;
tree t;
if (!PyArg_ParseTuple(args,
"s:maybe_get_identifier",
&str)) {
return NULL;
}
t = maybe_get_identifier(str);
return PyGccTree_New(gcc_private_make_tree(t));
}
static PyObject *PyGcc_make_translation_unit_decl(gcc_translation_unit_decl decl)
{
gcc_tree tree = gcc_translation_unit_decl_as_gcc_tree(decl);
return PyGccTree_New(tree);
}
IMPL_APPENDER(add_translation_unit_decl_to_list,
gcc_translation_unit_decl,
PyGcc_make_translation_unit_decl)
static PyObject *
PyGcc_get_translation_units(PyObject *self, PyObject *args)
{
IMPL_GLOBAL_LIST_MAKER(gcc_for_each_translation_unit_decl,
add_translation_unit_decl_to_list)
}
/* Weakly import global_namespace; it will be non-NULL for the C++ frontend.
GCC 8's r247599 (aka c99e91fe8d1191b348cbc1659fbfbac2fc07e154)
converted it from:
extern GTY(()) tree global_namespace;
to:
#define global_namespace cp_global_trees[CPTI_GLOBAL]
so we have to access cp_global_trees instead. */
#if (GCC_VERSION >= 8000)
__typeof__ (cp_global_trees) cp_global_trees __attribute__ ((weak));
#else
__typeof__ (global_namespace) global_namespace __attribute__ ((weak));
#endif /* #if (GCC_VERSION >= 8000) */
static PyObject *
PyGcc_get_global_namespace(PyObject *self, PyObject *args)
{
/* (global_namespace will be NULL outside the C++ frontend, giving a
result of None) */
return PyGccTree_New(gcc_private_make_tree(global_namespace));
}
/* Dump files */
static PyObject *
PyGcc_dump(PyObject *self, PyObject *arg)
{
PyObject *str_obj;
/*
gcc/output.h: declares:
extern FILE *dump_file;
This is NULL when not defined.
*/
if (!dump_file) {
/* The most common case; make it fast */
Py_RETURN_NONE;
}
str_obj = PyObject_Str(arg);
if (!str_obj) {
return NULL;
}
/* FIXME: encoding issues */
/* FIXME: GIL */
if (!fwrite(PyGccString_AsString(str_obj),
strlen(PyGccString_AsString(str_obj)),
1,
dump_file)) {
Py_DECREF(str_obj);
return PyErr_SetFromErrnoWithFilename(PyExc_IOError, dump_file_name);
}
Py_DECREF(str_obj);
Py_RETURN_NONE;
}
static PyObject *
PyGcc_get_dump_file_name(PyObject *self, PyObject *noargs)
{
/* gcc/tree-pass.h declares:
extern const char *dump_file_name;
*/
return PyGccStringOrNone(dump_file_name);
}
static PyObject *
PyGcc_get_dump_base_name(PyObject *self, PyObject *noargs)
{
/*
The generated gcc/options.h has:
#ifdef GENERATOR_FILE
extern const char *dump_base_name;
#else
const char *x_dump_base_name;
#define dump_base_name global_options.x_dump_base_name
#endif
*/
return PyGccStringOrNone(dump_base_name);
}
static PyObject *
PyGcc_get_is_lto(PyObject *self, PyObject *noargs)
{
/*
The generated gcc/options.h has:
#ifdef GENERATOR_FILE
extern bool in_lto_p;
#else
bool x_in_lto_p;
#define in_lto_p global_options.x_in_lto_p
#endif
*/
return PyBool_FromLong(in_lto_p);
}
static PyMethodDef GccMethods[] = {
{"register_attribute",
(PyCFunction)PyGcc_RegisterAttribute,
(METH_VARARGS | METH_KEYWORDS),
"Register an attribute."},
{"register_callback",
(PyCFunction)PyGcc_RegisterCallback,
(METH_VARARGS | METH_KEYWORDS),
"Register a callback, to be called when various GCC events occur."},
{"define_macro",
(PyCFunction)PyGcc_define_macro,
(METH_VARARGS | METH_KEYWORDS),
"Pre-define a named value in the preprocessor."},
/* Diagnostics: */
{"permerror", PyGcc_permerror, METH_VARARGS,
NULL},
{"error",
(PyCFunction)PyGcc_error,
(METH_VARARGS | METH_KEYWORDS),
("Report an error\n"
"FIXME\n")},
{"warning",
(PyCFunction)PyGcc_warning,
(METH_VARARGS | METH_KEYWORDS),
("Report a warning\n"
"FIXME\n")},
{"inform",
(PyCFunction)PyGcc_inform,
(METH_VARARGS | METH_KEYWORDS),
("Report an information message\n"
"FIXME\n")},
{"set_location",
(PyCFunction)PyGcc_set_location,
METH_VARARGS,
("Temporarily set the default location for error reports\n")},
/* Options: */
{"get_option_list",
PyGcc_get_option_list,
METH_NOARGS,
"Get all command-line options, as a list of gcc.Option instances"},
{"get_option_dict",
PyGcc_get_option_dict,
METH_NOARGS,
("Get all command-line options, as a dict from command-line text strings "
"to gcc.Option instances")},
/* Function has been removed from GCC 10. */
#if (GCC_VERSION < 10000)
{"get_parameters", PyGcc_get_parameters, METH_NOARGS,
"Get all tunable GCC parameters. Returns a dictionary, mapping from"
"option name -> gcc.Parameter instance"},
#endif
{"get_variables", PyGcc_get_variables, METH_NOARGS,
"Get all variables in this compilation unit as a list of gcc.Variable"},
{"maybe_get_identifier", PyGcc_maybe_get_identifier, METH_VARARGS,
"Get the gcc.IdentifierNode with this name, if it exists, otherwise None"},
{"get_translation_units", PyGcc_get_translation_units, METH_NOARGS,
"Get a list of all gcc.TranslationUnitDecl"},
{"get_global_namespace", PyGcc_get_global_namespace, METH_NOARGS,
"C++: get the global namespace (aka '::') as a gcc.NamespaceDecl"},
/* Version handling: */
{"get_plugin_gcc_version", PyGcc_get_plugin_gcc_version, METH_NOARGS,
"Get the gcc.Version that this plugin was compiled with"},
{"get_gcc_version", PyGcc_get_gcc_version, METH_NOARGS,
"Get the gcc.Version for this version of GCC"},
{"get_callgraph_nodes", PyGcc_get_callgraph_nodes, METH_VARARGS,
"Get a list of all gcc.CallgraphNode instances"},
/* Dump files */
{"dump", PyGcc_dump, METH_O,
"Dump str() of the argument to the current dump file (or silently discard it when no dump file is open)"},
{"get_dump_file_name", PyGcc_get_dump_file_name, METH_NOARGS,
"Get the name of the current dump file (or None)"},
{"get_dump_base_name", PyGcc_get_dump_base_name, METH_NOARGS,
"Get the base name used when writing dump files"},
{"is_lto", PyGcc_get_is_lto, METH_NOARGS,
"Determine whether or not we're being invoked during link-time optimization"},
/* Garbage collection */
{"_force_garbage_collection", PyGcc__force_garbage_collection, METH_NOARGS,
"Forcibly trigger a single run of GCC's garbage collector"},
{"_gc_selftest", PyGcc__gc_selftest, METH_NOARGS,
"Run a garbage-collection selftest"},
/* Sentinel: */
{NULL, NULL, 0, NULL}
};
static struct
{
PyObject *module;
PyObject *argument_dict;
PyObject *argument_tuple;
} PyGcc_globals;
#if PY_MAJOR_VERSION == 3
static struct PyModuleDef module_def = {
PyModuleDef_HEAD_INIT,
"gcc", /* name of module */
NULL,
-1,
GccMethods
};
#endif
PyMODINIT_FUNC PyInit_gcc(void)
{
#if PY_MAJOR_VERSION == 3
PyObject *m;
m = PyModule_Create(&module_def);
#else
Py_InitModule("gcc", GccMethods);
#endif
#if PY_MAJOR_VERSION == 3
return m;
#endif
}
static int
PyGcc_init_gcc_module(struct plugin_name_args *plugin_info)
{
int i;
if (!PyGcc_globals.module) {
return 0;
}
/* Set up int constants for each of the enum plugin_event values: */
#define DEFEVENT(NAME) \
PyModule_AddIntMacro(PyGcc_globals.module, NAME);
# include "plugin.def"
# undef DEFEVENT
PyGcc_globals.argument_dict = PyDict_New();
if (!PyGcc_globals.argument_dict) {
return 0;
}
PyGcc_globals.argument_tuple = PyTuple_New(plugin_info->argc);
if (!PyGcc_globals.argument_tuple) {
return 0;
}
/* PySys_SetArgvEx(plugin_info->argc, plugin_info->argv, 0); */
for (i=0; i<plugin_info->argc; i++) {
struct plugin_argument *arg = &plugin_info->argv[i];
PyObject *key;
PyObject *value;
PyObject *pair;
key = PyGccString_FromString(arg->key);
if (arg->value) {
value = PyGccString_FromString(plugin_info->argv[i].value);
} else {
value = Py_None;
}
PyDict_SetItem(PyGcc_globals.argument_dict, key, value);
// FIXME: ref counts?
pair = Py_BuildValue("(s, s)", arg->key, arg->value);
if (!pair) {
return 1;
}
PyTuple_SetItem(PyGcc_globals.argument_tuple, i, pair);
}
PyModule_AddObject(PyGcc_globals.module, "argument_dict", PyGcc_globals.argument_dict);
PyModule_AddObject(PyGcc_globals.module, "argument_tuple", PyGcc_globals.argument_tuple);
/* Pass properties: */
PyModule_AddIntMacro(PyGcc_globals.module, PROP_gimple_any);
PyModule_AddIntMacro(PyGcc_globals.module, PROP_gimple_lcf);
PyModule_AddIntMacro(PyGcc_globals.module, PROP_gimple_leh);
PyModule_AddIntMacro(PyGcc_globals.module, PROP_cfg);
#if (GCC_VERSION >= 4008)
/* PROP_referenced_vars went away in GCC 4.8 (in r190067) */
#else
PyModule_AddIntMacro(PyGcc_globals.module, PROP_referenced_vars);
#endif
PyModule_AddIntMacro(PyGcc_globals.module, PROP_ssa);
PyModule_AddIntMacro(PyGcc_globals.module, PROP_no_crit_edges);
PyModule_AddIntMacro(PyGcc_globals.module, PROP_rtl);
PyModule_AddIntMacro(PyGcc_globals.module, PROP_gimple_lomp);
PyModule_AddIntMacro(PyGcc_globals.module, PROP_cfglayout);
PyModule_AddIntMacro(PyGcc_globals.module, PROP_gimple_lcx);
PyModule_AddIntMacro(PyGcc_globals.module, GCC_VERSION);
/* Success: */
return 1;
}
static void PyGcc_run_any_command(void)
{
PyObject* command_obj; /* borrowed ref */
int result;
const char *command_str;
command_obj = PyDict_GetItemString(PyGcc_globals.argument_dict, "command");
if (!command_obj) {
return;
}
command_str = PyGccString_AsString(command_obj);
if (0) {
fprintf(stderr, "Running: %s\n", command_str);
}
result = PyRun_SimpleString(command_str);
if (-1 == result) {
/* Error running the python command */
Py_Finalize();
exit(1);
}
}
static void PyGcc_run_any_script(void)
{
PyObject* script_name;
FILE *fp;
int result;
script_name = PyDict_GetItemString(PyGcc_globals.argument_dict, "script");
if (!script_name) {
return;
}
fp = fopen(PyGccString_AsString(script_name), "r");
if (!fp) {
fprintf(stderr,
"Unable to read python script: %s\n",
PyGccString_AsString(script_name));
exit(1);
}
result = PyRun_SimpleFile(fp, PyGccString_AsString(script_name));
fclose(fp);
if (-1 == result) {
/* Error running the python script */
Py_Finalize();
exit(1);
}
}
int
setup_sys(struct plugin_name_args *plugin_info)
{
/*
* Sets up "sys.plugin_full_name" as plugin_info->full_name. This is the
path to the plugin (as specified with -fplugin=)
* Sets up "sys.plugin_base_name" as plugin_info->base_name. This is the
short name, of the plugin (filename without .so suffix)
* Add the directory containing the plugin to "sys.path", so that it can
find modules relative to itself without needing PYTHONPATH to be set up.
(sys.path has already been initialized by the call to Py_Initialize)
* If PLUGIN_PYTHONPATH is defined, add it to "sys.path"
*/
int result = 0; /* failure */
PyObject *full_name = NULL;
PyObject *base_name = NULL;
const char *program =
"import sys;\n"
"import os;\n"
"sys.path.append(os.path.abspath(os.path.dirname(sys.plugin_full_name)))\n";
/* Setup "sys.plugin_full_name" */
full_name = PyGccString_FromString(plugin_info->full_name);
if (!full_name) {
goto error;
}
if (-1 == PySys_SetObject((char*)"plugin_full_name", full_name)) {
goto error;
}
/* Setup "sys.plugin_base_name" */
base_name = PyGccString_FromString(plugin_info->base_name);
if (!base_name) {
goto error;
}
if (-1 == PySys_SetObject((char*)"plugin_base_name", base_name)) {
goto error;
}
/* Add the plugin's path to sys.path */
if (-1 == PyRun_SimpleString(program)) {
goto error;
}
#ifdef PLUGIN_PYTHONPATH
{
/*
Support having multiple builds of the plugin installed independently
of each other, by supporting each having a directory for support
files e.g. gccutils, libcpychecker, etc
We do this by seeing if PLUGIN_PYTHONPATH was defined in the
compile, and if so, adding it to sys.path:
*/
const char *program2 =
"import sys;\n"
"import os;\n"
"sys.path.append('" PLUGIN_PYTHONPATH "')\n";
if (-1 == PyRun_SimpleString(program2)) {
goto error;
}
}
#endif
/* Success: */
result = 1;
error:
Py_XDECREF(full_name);
Py_XDECREF(base_name);
return result;
}
/*
Wired up to PLUGIN_FINISH, this callback handles finalization for the plugin:
*/
void
on_plugin_finish(void *gcc_data, void *user_data)
{
/*
Clean up the python runtime.
For python 3, this flushes buffering of sys.stdout and sys.stderr
*/
Py_Finalize();
}
extern int
plugin_init (struct plugin_name_args *plugin_info,
struct plugin_gcc_version *version) __attribute__((nonnull));
int
plugin_init (struct plugin_name_args *plugin_info,
struct plugin_gcc_version *version)
{
LOG("plugin_init started");
if (!plugin_default_version_check (version, &gcc_version)) {
return 1;
}
#if PY_MAJOR_VERSION >= 3
/*
Python 3 added internal buffering to sys.stdout and sys.stderr, but this
leads to unpredictable interleavings of messages from gcc, such as from calling
gcc.warning() vs those from python scripts, such as from print() and
sys.stdout.write()
Suppress the buffering, to better support mixed gcc/python output:
*/
Py_UnbufferedStdioFlag = 1;
#endif
PyImport_AppendInittab("gcc", PyInit_gcc);
LOG("calling Py_Initialize...");
Py_Initialize();
LOG("Py_Initialize finished");
PyGcc_globals.module = PyImport_ImportModule("gcc");
PyEval_InitThreads();
if (!PyGcc_init_gcc_module(plugin_info)) {
return 1;
}
if (!setup_sys(plugin_info)) {
return 1;
}
/* Init other modules */
PyGcc_wrapper_init();
/* FIXME: properly integrate them within the module hierarchy */
PyGcc_version_init(version);
autogenerated_callgraph_init_types(); /* FIXME: error checking! */
autogenerated_cfg_init_types(); /* FIXME: error checking! */
autogenerated_function_init_types(); /* FIXME: error checking! */
autogenerated_gimple_init_types(); /* FIXME: error checking! */
autogenerated_location_init_types(); /* FIXME: error checking! */
autogenerated_option_init_types(); /* FIXME: error checking! */
#if (GCC_VERSION < 10000)
autogenerated_parameter_init_types(); /* FIXME: error checking! */
#endif
autogenerated_pass_init_types(); /* FIXME: error checking! */
autogenerated_pretty_printer_init_types(); /* FIXME: error checking! */
autogenerated_rtl_init_types(); /* FIXME: error checking! */
autogenerated_tree_init_types(); /* FIXME: error checking! */
autogenerated_variable_init_types(); /* FIXME: error checking! */
autogenerated_callgraph_add_types(PyGcc_globals.module);
autogenerated_cfg_add_types(PyGcc_globals.module);
autogenerated_function_add_types(PyGcc_globals.module);
autogenerated_gimple_add_types(PyGcc_globals.module);
autogenerated_location_add_types(PyGcc_globals.module);
autogenerated_option_add_types(PyGcc_globals.module);
#if (GCC_VERSION < 10000)
autogenerated_parameter_add_types(PyGcc_globals.module);
#endif
autogenerated_pass_add_types(PyGcc_globals.module);
autogenerated_pretty_printer_add_types(PyGcc_globals.module);
autogenerated_rtl_add_types(PyGcc_globals.module);
autogenerated_tree_add_types(PyGcc_globals.module);
autogenerated_variable_add_types(PyGcc_globals.module);
/* Register at-exit finalization for the plugin: */
register_callback(plugin_info->base_name, PLUGIN_FINISH,
on_plugin_finish, NULL);
PyGcc_run_any_command();
PyGcc_run_any_script();
//printf("%s:%i:got here\n", __FILE__, __LINE__);
#if GCC_PYTHON_TRACE_ALL_EVENTS
#define DEFEVENT(NAME) \
if (NAME != PLUGIN_PASS_MANAGER_SETUP && \
NAME != PLUGIN_INFO && \
NAME != PLUGIN_REGISTER_GGC_ROOTS && \
NAME != PLUGIN_REGISTER_GGC_CACHES) { \
register_callback(plugin_info->base_name, NAME, \
trace_callback_for_##NAME, NULL); \
}
# include "plugin.def"
# undef DEFEVENT
#endif /* GCC_PYTHON_TRACE_ALL_EVENTS */
LOG("init_plugin finished");
return 0;
}
PyObject *
PyGccStringOrNone(const char *str_or_null)
{
if (str_or_null) {
return PyGccString_FromString(str_or_null);
} else {
Py_RETURN_NONE;
}
}
PyObject *
PyGcc_int_from_decimal_string_buffer(const char *buf)
{
PyObject *long_obj;
#if PY_MAJOR_VERSION < 3
long long_val;
int overflow;
#endif
long_obj = PyLong_FromString((char *)buf, NULL, 10);
if (!long_obj) {
return NULL;
}
#if PY_MAJOR_VERSION >= 3
return long_obj;
#else
long_val = PyLong_AsLongAndOverflow(long_obj, &overflow);
if (overflow) {
/* Doesn't fit in a PyIntObject; use the PyLongObject: */
return long_obj;
} else {
/* Fits in a PyIntObject: use that */
PyObject *int_obj = PyInt_FromLong(long_val);
if (!int_obj) {
return long_obj;
}
Py_DECREF(long_obj);
return int_obj;
}
#endif
}
#if (GCC_VERSION < 5000)
/*
"double_int" is declared in gcc/double-int.h as a pair of HOST_WIDE_INT.
These in turn are defined in gcc/hwint.h as a #define to one of "long",
"long long", or "__int64".
It appears that they can be interpreted as either "unsigned" or "signed"
How to convert this to other types?
We "cheat", and take it through the decimal representation, then convert
from decimal. This is probably slow, but is (I hope) at least correct.
*/
void
PyGcc_DoubleIntAsText(double_int di, bool is_unsigned,
char *out, int bufsize)
{
FILE *f;
assert(out);
assert(bufsize > 256); /* FIXME */
out[0] = '\0';
f = fmemopen(out, bufsize, "w");
dump_double_int (f, di, is_unsigned);
fclose(f);
}
PyObject *
PyGcc_int_from_double_int(double_int di, bool is_unsigned)
{
char buf[512]; /* FIXME */
PyGcc_DoubleIntAsText(di, is_unsigned, buf, sizeof(buf));
return PyGcc_int_from_decimal_string_buffer(buf);
}
#endif /* #if (GCC_VERSION < 5000) */
/*
GCC's headers "poison" strdup to make it unavailable, so we provide our own.
The buffer is allocated using PyMem_Malloc
*/
char *
PyGcc_strdup(const char *str)
{
char *result;
char *dst;
result = (char*)PyMem_Malloc(strlen(str) + 1);
if (!result) {
return NULL;
}
dst = result;
while (*str) {
*(dst++) = *(str++);
}
*dst = '\0';
return result;
}
void PyGcc_PrintException(const char *msg)
{
/* Handler for Python exceptions */
assert(msg);
/*
Emit a gcc error, using GCC's "input_location"
Typically, by the time our code is running, that's generally just the
end of the source file.
The value is saved and restored whenever calling into Python code, and
within passes is initialized to the top of the function; it can be
temporarily overridden using gcc.set_location()
*/
gcc_error_at(gcc_get_input_location(), msg);
/* Print the traceback: */
PyErr_PrintEx(1);
}
PyObject *
PyGcc_GetReprOfAttribute(PyObject *obj, const char *attrname)
{
You can’t perform that action at this time.