?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
[runtime] Factor out some code from mono_metadata_compute_size () to make it easier...
[mono-project.git] / mono / metadata / metadata.c
blob6301a73c74c305a982f6d00b030e29102121fbb3
1 /*
2 * metadata.c: Routines for accessing the metadata
3 *
4 * Authors:
5 * Miguel de Icaza (miguel@ximian.com)
6 * Paolo Molaro (lupus@ximian.com)
7 *
8 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
9 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
10 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
11 */
12
13 #include <config.h>
14 #include <stdio.h>
15 #include <stdlib.h>
16 #include <string.h>
17 #include <glib.h>
18 #include "metadata.h"
19 #include "tabledefs.h"
20 #include "mono-endian.h"
21 #include "cil-coff.h"
22 #include "tokentype.h"
23 #include "class-internals.h"
24 #include "metadata-internals.h"
25 #include "verify-internals.h"
26 #include "class.h"
27 #include "marshal.h"
28 #include "debug-helpers.h"
29 #include "abi-details.h"
30 #include <mono/utils/mono-error-internals.h>
31 #include <mono/utils/bsearch.h>
32 #include <mono/utils/atomic.h>
33
34 /* Auxiliary structure used for caching inflated signatures */
35 typedef struct {
36 MonoMethodSignature *sig;
37 MonoGenericContext context;
38 } MonoInflatedMethodSignature;
39
40 static gboolean do_mono_metadata_parse_type (MonoType *type, MonoImage *m, MonoGenericContainer *container, gboolean transient,
41 const char *ptr, const char **rptr, MonoError *error);
42
43 static gboolean do_mono_metadata_type_equal (MonoType *t1, MonoType *t2, gboolean signature_only);
44 static gboolean mono_metadata_class_equal (MonoClass *c1, MonoClass *c2, gboolean signature_only);
45 static gboolean mono_metadata_fnptr_equal (MonoMethodSignature *s1, MonoMethodSignature *s2, gboolean signature_only);
46 static gboolean _mono_metadata_generic_class_equal (const MonoGenericClass *g1, const MonoGenericClass *g2,
47 gboolean signature_only);
48 static void free_generic_inst (MonoGenericInst *ginst);
49 static void free_generic_class (MonoGenericClass *ginst);
50 static void free_inflated_method (MonoMethodInflated *method);
51 static void free_inflated_signature (MonoInflatedMethodSignature *sig);
52 static void mono_metadata_field_info_full (MonoImage *meta, guint32 index, guint32 *offset, guint32 *rva, MonoMarshalSpec **marshal_spec, gboolean alloc_from_image);
53
54 /*
55 * This enumeration is used to describe the data types in the metadata
56 * tables
57 */
58 enum {
59 MONO_MT_END,
60
61 /* Sized elements */
62 MONO_MT_UINT32,
63 MONO_MT_UINT16,
64 MONO_MT_UINT8,
65
66 /* Index into Blob heap */
67 MONO_MT_BLOB_IDX,
68
69 /* Index into String heap */
70 MONO_MT_STRING_IDX,
71
72 /* GUID index */
73 MONO_MT_GUID_IDX,
74
75 /* Pointer into a table */
76 MONO_MT_TABLE_IDX,
77
78 /* HasConstant:Parent pointer (Param, Field or Property) */
79 MONO_MT_CONST_IDX,
80
81 /* HasCustomAttribute index. Indexes any table except CustomAttribute */
82 MONO_MT_HASCAT_IDX,
83
84 /* CustomAttributeType encoded index */
85 MONO_MT_CAT_IDX,
86
87 /* HasDeclSecurity index: TypeDef Method or Assembly */
88 MONO_MT_HASDEC_IDX,
89
90 /* Implementation coded index: File, Export AssemblyRef */
91 MONO_MT_IMPL_IDX,
92
93 /* HasFieldMarshal coded index: Field or Param table */
94 MONO_MT_HFM_IDX,
95
96 /* MemberForwardedIndex: Field or Method */
97 MONO_MT_MF_IDX,
98
99 /* TypeDefOrRef coded index: typedef, typeref, typespec */
100 MONO_MT_TDOR_IDX,
101
102 /* MemberRefParent coded index: typeref, moduleref, method, memberref, typesepc, typedef */
103 MONO_MT_MRP_IDX,
104
105 /* MethodDefOrRef coded index: Method or Member Ref table */
106 MONO_MT_MDOR_IDX,
107
108 /* HasSemantic coded index: Event or Property */
109 MONO_MT_HS_IDX,
110
111 /* ResolutionScope coded index: Module, ModuleRef, AssemblytRef, TypeRef */
112 MONO_MT_RS_IDX,
113
114 /* CustomDebugInformation parent encoded index */
115 MONO_MT_HASCUSTDEBUG_IDX
116 };
117
118 const static unsigned char TableSchemas [] = {
119 #define ASSEMBLY_SCHEMA_OFFSET 0
120 MONO_MT_UINT32, /* "HashId" }, */
121 MONO_MT_UINT16, /* "Major" }, */
122 MONO_MT_UINT16, /* "Minor" }, */
123 MONO_MT_UINT16, /* "BuildNumber" }, */
124 MONO_MT_UINT16, /* "RevisionNumber" }, */
125 MONO_MT_UINT32, /* "Flags" }, */
126 MONO_MT_BLOB_IDX, /* "PublicKey" }, */
127 MONO_MT_STRING_IDX, /* "Name" }, */
128 MONO_MT_STRING_IDX, /* "Culture" }, */
129 MONO_MT_END,
130
131 #define ASSEMBLYOS_SCHEMA_OFFSET ASSEMBLY_SCHEMA_OFFSET + 10
132 MONO_MT_UINT32, /* "OSPlatformID" }, */
133 MONO_MT_UINT32, /* "OSMajor" }, */
134 MONO_MT_UINT32, /* "OSMinor" }, */
135 MONO_MT_END,
136
137 #define ASSEMBLYPROC_SCHEMA_OFFSET ASSEMBLYOS_SCHEMA_OFFSET + 4
138 MONO_MT_UINT32, /* "Processor" }, */
139 MONO_MT_END,
140
141 #define ASSEMBLYREF_SCHEMA_OFFSET ASSEMBLYPROC_SCHEMA_OFFSET + 2
142 MONO_MT_UINT16, /* "Major" }, */
143 MONO_MT_UINT16, /* "Minor" }, */
144 MONO_MT_UINT16, /* "Build" }, */
145 MONO_MT_UINT16, /* "Revision" }, */
146 MONO_MT_UINT32, /* "Flags" }, */
147 MONO_MT_BLOB_IDX, /* "PublicKeyOrToken" }, */
148 MONO_MT_STRING_IDX, /* "Name" }, */
149 MONO_MT_STRING_IDX, /* "Culture" }, */
150 MONO_MT_BLOB_IDX, /* "HashValue" }, */
151 MONO_MT_END,
152
153 #define ASSEMBLYREFOS_SCHEMA_OFFSET ASSEMBLYREF_SCHEMA_OFFSET + 10
154 MONO_MT_UINT32, /* "OSPlatformID" }, */
155 MONO_MT_UINT32, /* "OSMajorVersion" }, */
156 MONO_MT_UINT32, /* "OSMinorVersion" }, */
157 MONO_MT_TABLE_IDX, /* "AssemblyRef:AssemblyRef" }, */
158 MONO_MT_END,
159
160 #define ASSEMBLYREFPROC_SCHEMA_OFFSET ASSEMBLYREFOS_SCHEMA_OFFSET + 5
161 MONO_MT_UINT32, /* "Processor" }, */
162 MONO_MT_TABLE_IDX, /* "AssemblyRef:AssemblyRef" }, */
163 MONO_MT_END,
164
165 #define CLASS_LAYOUT_SCHEMA_OFFSET ASSEMBLYREFPROC_SCHEMA_OFFSET + 3
166 MONO_MT_UINT16, /* "PackingSize" }, */
167 MONO_MT_UINT32, /* "ClassSize" }, */
168 MONO_MT_TABLE_IDX, /* "Parent:TypeDef" }, */
169 MONO_MT_END,
170
171 #define CONSTANT_SCHEMA_OFFSET CLASS_LAYOUT_SCHEMA_OFFSET + 4
172 MONO_MT_UINT8, /* "Type" }, */
173 MONO_MT_UINT8, /* "PaddingZero" }, */
174 MONO_MT_CONST_IDX, /* "Parent" }, */
175 MONO_MT_BLOB_IDX, /* "Value" }, */
176 MONO_MT_END,
177
178 #define CUSTOM_ATTR_SCHEMA_OFFSET CONSTANT_SCHEMA_OFFSET + 5
179 MONO_MT_HASCAT_IDX, /* "Parent" }, */
180 MONO_MT_CAT_IDX, /* "Type" }, */
181 MONO_MT_BLOB_IDX, /* "Value" }, */
182 MONO_MT_END,
183
184 #define DECL_SEC_SCHEMA_OFFSET CUSTOM_ATTR_SCHEMA_OFFSET + 4
185 MONO_MT_UINT16, /* "Action" }, */
186 MONO_MT_HASDEC_IDX, /* "Parent" }, */
187 MONO_MT_BLOB_IDX, /* "PermissionSet" }, */
188 MONO_MT_END,
189
190 #define EVENTMAP_SCHEMA_OFFSET DECL_SEC_SCHEMA_OFFSET + 4
191 MONO_MT_TABLE_IDX, /* "Parent:TypeDef" }, */
192 MONO_MT_TABLE_IDX, /* "EventList:Event" }, */
193 MONO_MT_END,
194
195 #define EVENT_SCHEMA_OFFSET EVENTMAP_SCHEMA_OFFSET + 3
196 MONO_MT_UINT16, /* "EventFlags#EventAttribute" }, */
197 MONO_MT_STRING_IDX, /* "Name" }, */
198 MONO_MT_TDOR_IDX, /* "EventType" }, TypeDef or TypeRef or TypeSpec */
199 MONO_MT_END,
200
201 #define EVENT_POINTER_SCHEMA_OFFSET EVENT_SCHEMA_OFFSET + 4
202 MONO_MT_TABLE_IDX, /* "Event" }, */
203 MONO_MT_END,
204
205 #define EXPORTED_TYPE_SCHEMA_OFFSET EVENT_POINTER_SCHEMA_OFFSET + 2
206 MONO_MT_UINT32, /* "Flags" }, */
207 MONO_MT_TABLE_IDX, /* "TypeDefId" }, */
208 MONO_MT_STRING_IDX, /* "TypeName" }, */
209 MONO_MT_STRING_IDX, /* "TypeNameSpace" }, */
210 MONO_MT_IMPL_IDX, /* "Implementation" }, */
211 MONO_MT_END,
212
213 #define FIELD_SCHEMA_OFFSET EXPORTED_TYPE_SCHEMA_OFFSET + 6
214 MONO_MT_UINT16, /* "Flags" }, */
215 MONO_MT_STRING_IDX, /* "Name" }, */
216 MONO_MT_BLOB_IDX, /* "Signature" }, */
217 MONO_MT_END,
218
219 #define FIELD_LAYOUT_SCHEMA_OFFSET FIELD_SCHEMA_OFFSET + 4
220 MONO_MT_UINT32, /* "Offset" }, */
221 MONO_MT_TABLE_IDX, /* "Field:Field" }, */
222 MONO_MT_END,
223
224 #define FIELD_MARSHAL_SCHEMA_OFFSET FIELD_LAYOUT_SCHEMA_OFFSET + 3
225 MONO_MT_HFM_IDX, /* "Parent" }, */
226 MONO_MT_BLOB_IDX, /* "NativeType" }, */
227 MONO_MT_END,
228
229 #define FIELD_RVA_SCHEMA_OFFSET FIELD_MARSHAL_SCHEMA_OFFSET + 3
230 MONO_MT_UINT32, /* "RVA" }, */
231 MONO_MT_TABLE_IDX, /* "Field:Field" }, */
232 MONO_MT_END,
233
234 #define FIELD_POINTER_SCHEMA_OFFSET FIELD_RVA_SCHEMA_OFFSET + 3
235 MONO_MT_TABLE_IDX, /* "Field" }, */
236 MONO_MT_END,
237
238 #define FILE_SCHEMA_OFFSET FIELD_POINTER_SCHEMA_OFFSET + 2
239 MONO_MT_UINT32, /* "Flags" }, */
240 MONO_MT_STRING_IDX, /* "Name" }, */
241 MONO_MT_BLOB_IDX, /* "Value" }, */
242 MONO_MT_END,
243
244 #define IMPLMAP_SCHEMA_OFFSET FILE_SCHEMA_OFFSET + 4
245 MONO_MT_UINT16, /* "MappingFlag" }, */
246 MONO_MT_MF_IDX, /* "MemberForwarded" }, */
247 MONO_MT_STRING_IDX, /* "ImportName" }, */
248 MONO_MT_TABLE_IDX, /* "ImportScope:ModuleRef" }, */
249 MONO_MT_END,
250
251 #define IFACEMAP_SCHEMA_OFFSET IMPLMAP_SCHEMA_OFFSET + 5
252 MONO_MT_TABLE_IDX, /* "Class:TypeDef" }, */
253 MONO_MT_TDOR_IDX, /* "Interface=TypeDefOrRef" }, */
254 MONO_MT_END,
255
256 #define MANIFEST_SCHEMA_OFFSET IFACEMAP_SCHEMA_OFFSET + 3
257 MONO_MT_UINT32, /* "Offset" }, */
258 MONO_MT_UINT32, /* "Flags" }, */
259 MONO_MT_STRING_IDX, /* "Name" }, */
260 MONO_MT_IMPL_IDX, /* "Implementation" }, */
261 MONO_MT_END,
262
263 #define MEMBERREF_SCHEMA_OFFSET MANIFEST_SCHEMA_OFFSET + 5
264 MONO_MT_MRP_IDX, /* "Class" }, */
265 MONO_MT_STRING_IDX, /* "Name" }, */
266 MONO_MT_BLOB_IDX, /* "Signature" }, */
267 MONO_MT_END,
268
269 #define METHOD_SCHEMA_OFFSET MEMBERREF_SCHEMA_OFFSET + 4
270 MONO_MT_UINT32, /* "RVA" }, */
271 MONO_MT_UINT16, /* "ImplFlags#MethodImplAttributes" }, */
272 MONO_MT_UINT16, /* "Flags#MethodAttribute" }, */
273 MONO_MT_STRING_IDX, /* "Name" }, */
274 MONO_MT_BLOB_IDX, /* "Signature" }, */
275 MONO_MT_TABLE_IDX, /* "ParamList:Param" }, */
276 MONO_MT_END,
277
278 #define METHOD_IMPL_SCHEMA_OFFSET METHOD_SCHEMA_OFFSET + 7
279 MONO_MT_TABLE_IDX, /* "Class:TypeDef" }, */
280 MONO_MT_MDOR_IDX, /* "MethodBody" }, */
281 MONO_MT_MDOR_IDX, /* "MethodDeclaration" }, */
282 MONO_MT_END,
283
284 #define METHOD_SEMA_SCHEMA_OFFSET METHOD_IMPL_SCHEMA_OFFSET + 4
285 MONO_MT_UINT16, /* "MethodSemantic" }, */
286 MONO_MT_TABLE_IDX, /* "Method:Method" }, */
287 MONO_MT_HS_IDX, /* "Association" }, */
288 MONO_MT_END,
289
290 #define METHOD_POINTER_SCHEMA_OFFSET METHOD_SEMA_SCHEMA_OFFSET + 4
291 MONO_MT_TABLE_IDX, /* "Method" }, */
292 MONO_MT_END,
293
294 #define MODULE_SCHEMA_OFFSET METHOD_POINTER_SCHEMA_OFFSET + 2
295 MONO_MT_UINT16, /* "Generation" }, */
296 MONO_MT_STRING_IDX, /* "Name" }, */
297 MONO_MT_GUID_IDX, /* "MVID" }, */
298 MONO_MT_GUID_IDX, /* "EncID" }, */
299 MONO_MT_GUID_IDX, /* "EncBaseID" }, */
300 MONO_MT_END,
301
302 #define MODULEREF_SCHEMA_OFFSET MODULE_SCHEMA_OFFSET + 6
303 MONO_MT_STRING_IDX, /* "Name" }, */
304 MONO_MT_END,
305
306 #define NESTED_CLASS_SCHEMA_OFFSET MODULEREF_SCHEMA_OFFSET + 2
307 MONO_MT_TABLE_IDX, /* "NestedClass:TypeDef" }, */
308 MONO_MT_TABLE_IDX, /* "EnclosingClass:TypeDef" }, */
309 MONO_MT_END,
310
311 #define PARAM_SCHEMA_OFFSET NESTED_CLASS_SCHEMA_OFFSET + 3
312 MONO_MT_UINT16, /* "Flags" }, */
313 MONO_MT_UINT16, /* "Sequence" }, */
314 MONO_MT_STRING_IDX, /* "Name" }, */
315 MONO_MT_END,
316
317 #define PARAM_POINTER_SCHEMA_OFFSET PARAM_SCHEMA_OFFSET + 4
318 MONO_MT_TABLE_IDX, /* "Param" }, */
319 MONO_MT_END,
320
321 #define PROPERTY_SCHEMA_OFFSET PARAM_POINTER_SCHEMA_OFFSET + 2
322 MONO_MT_UINT16, /* "Flags" }, */
323 MONO_MT_STRING_IDX, /* "Name" }, */
324 MONO_MT_BLOB_IDX, /* "Type" }, */
325 MONO_MT_END,
326
327 #define PROPERTY_POINTER_SCHEMA_OFFSET PROPERTY_SCHEMA_OFFSET + 4
328 MONO_MT_TABLE_IDX, /* "Property" }, */
329 MONO_MT_END,
330
331 #define PROPERTY_MAP_SCHEMA_OFFSET PROPERTY_POINTER_SCHEMA_OFFSET + 2
332 MONO_MT_TABLE_IDX, /* "Parent:TypeDef" }, */
333 MONO_MT_TABLE_IDX, /* "PropertyList:Property" }, */
334 MONO_MT_END,
335
336 #define STDALON_SIG_SCHEMA_OFFSET PROPERTY_MAP_SCHEMA_OFFSET + 3
337 MONO_MT_BLOB_IDX, /* "Signature" }, */
338 MONO_MT_END,
339
340 #define TYPEDEF_SCHEMA_OFFSET STDALON_SIG_SCHEMA_OFFSET + 2
341 MONO_MT_UINT32, /* "Flags" }, */
342 MONO_MT_STRING_IDX, /* "Name" }, */
343 MONO_MT_STRING_IDX, /* "Namespace" }, */
344 MONO_MT_TDOR_IDX, /* "Extends" }, */
345 MONO_MT_TABLE_IDX, /* "FieldList:Field" }, */
346 MONO_MT_TABLE_IDX, /* "MethodList:Method" }, */
347 MONO_MT_END,
348
349 #define TYPEREF_SCHEMA_OFFSET TYPEDEF_SCHEMA_OFFSET + 7
350 MONO_MT_RS_IDX, /* "ResolutionScope=ResolutionScope" }, */
351 MONO_MT_STRING_IDX, /* "Name" }, */
352 MONO_MT_STRING_IDX, /* "Namespace" }, */
353 MONO_MT_END,
354
355 #define TYPESPEC_SCHEMA_OFFSET TYPEREF_SCHEMA_OFFSET + 4
356 MONO_MT_BLOB_IDX, /* "Signature" }, */
357 MONO_MT_END,
358
359 #define GENPARAM_SCHEMA_OFFSET TYPESPEC_SCHEMA_OFFSET + 2
360 MONO_MT_UINT16, /* "Number" }, */
361 MONO_MT_UINT16, /* "Flags" }, */
362 MONO_MT_TABLE_IDX, /* "Owner" }, TypeDef or MethodDef */
363 MONO_MT_STRING_IDX, /* "Name" }, */
364 MONO_MT_END,
365
366 #define METHOD_SPEC_SCHEMA_OFFSET GENPARAM_SCHEMA_OFFSET + 5
367 MONO_MT_MDOR_IDX, /* "Method" }, */
368 MONO_MT_BLOB_IDX, /* "Signature" }, */
369 MONO_MT_END,
370
371 #define GEN_CONSTRAINT_SCHEMA_OFFSET METHOD_SPEC_SCHEMA_OFFSET + 3
372 MONO_MT_TABLE_IDX, /* "GenericParam" }, */
373 MONO_MT_TDOR_IDX, /* "Constraint" }, */
374 MONO_MT_END,
375
376 #define DOCUMENT_SCHEMA_OFFSET GEN_CONSTRAINT_SCHEMA_OFFSET + 3
377 MONO_MT_BLOB_IDX, /* Name */
378 MONO_MT_GUID_IDX, /* HashAlgorithm */
379 MONO_MT_BLOB_IDX, /* Hash */
380 MONO_MT_GUID_IDX, /* Language */
381 MONO_MT_END,
382
383 #define METHODBODY_SCHEMA_OFFSET DOCUMENT_SCHEMA_OFFSET + 5
384 MONO_MT_TABLE_IDX, /* Document */
385 MONO_MT_BLOB_IDX, /* SequencePoints */
386 MONO_MT_END,
387
388 #define LOCALSCOPE_SCHEMA_OFFSET METHODBODY_SCHEMA_OFFSET + 3
389 MONO_MT_TABLE_IDX, /* Method */
390 MONO_MT_TABLE_IDX, /* ImportScope */
391 MONO_MT_TABLE_IDX, /* VariableList */
392 MONO_MT_TABLE_IDX, /* ConstantList */
393 MONO_MT_UINT32, /* StartOffset */
394 MONO_MT_UINT32, /* Length */
395 MONO_MT_END,
396
397 #define LOCALVARIABLE_SCHEMA_OFFSET LOCALSCOPE_SCHEMA_OFFSET + 7
398 MONO_MT_UINT16, /* Attributes */
399 MONO_MT_UINT16, /* Index */
400 MONO_MT_STRING_IDX, /* Name */
401 MONO_MT_END,
402
403 #define LOCALCONSTANT_SCHEMA_OFFSET LOCALVARIABLE_SCHEMA_OFFSET + 4
404 MONO_MT_STRING_IDX, /* Name (String heap index) */
405 MONO_MT_BLOB_IDX, /* Signature (Blob heap index, LocalConstantSig blob) */
406 MONO_MT_END,
407
408 #define IMPORTSCOPE_SCHEMA_OFFSET LOCALCONSTANT_SCHEMA_OFFSET + 3
409 MONO_MT_TABLE_IDX, /* Parent (ImportScope row id or nil) */
410 MONO_MT_BLOB_IDX, /* Imports (Blob index, encoding: Imports blob) */
411 MONO_MT_END,
412
413 #define ASYNCMETHOD_SCHEMA_OFFSET IMPORTSCOPE_SCHEMA_OFFSET + 3
414 MONO_MT_TABLE_IDX, /* MoveNextMethod (MethodDef row id) */
415 MONO_MT_TABLE_IDX, /* KickoffMethod (MethodDef row id) */
416 MONO_MT_END,
417
418 #define CUSTOMDEBUGINFORMATION_SCHEMA_OFFSET ASYNCMETHOD_SCHEMA_OFFSET + 3
419 MONO_MT_HASCUSTDEBUG_IDX, /* Parent (HasCustomDebugInformation coded index) */
420 MONO_MT_GUID_IDX, /* Kind (Guid heap index) */
421 MONO_MT_BLOB_IDX, /* Value (Blob heap index) */
422 MONO_MT_END,
423
424 #define NULL_SCHEMA_OFFSET CUSTOMDEBUGINFORMATION_SCHEMA_OFFSET + 4
425 MONO_MT_END
426 };
427
428 /* Must be the same order as MONO_TABLE_* */
429 const static unsigned char
430 table_description [] = {
431 MODULE_SCHEMA_OFFSET,
432 TYPEREF_SCHEMA_OFFSET,
433 TYPEDEF_SCHEMA_OFFSET,
434 FIELD_POINTER_SCHEMA_OFFSET,
435 FIELD_SCHEMA_OFFSET,
436 METHOD_POINTER_SCHEMA_OFFSET,
437 METHOD_SCHEMA_OFFSET,
438 PARAM_POINTER_SCHEMA_OFFSET,
439 PARAM_SCHEMA_OFFSET,
440 IFACEMAP_SCHEMA_OFFSET,
441 MEMBERREF_SCHEMA_OFFSET, /* 0xa */
442 CONSTANT_SCHEMA_OFFSET,
443 CUSTOM_ATTR_SCHEMA_OFFSET,
444 FIELD_MARSHAL_SCHEMA_OFFSET,
445 DECL_SEC_SCHEMA_OFFSET,
446 CLASS_LAYOUT_SCHEMA_OFFSET,
447 FIELD_LAYOUT_SCHEMA_OFFSET, /* 0x10 */
448 STDALON_SIG_SCHEMA_OFFSET,
449 EVENTMAP_SCHEMA_OFFSET,
450 EVENT_POINTER_SCHEMA_OFFSET,
451 EVENT_SCHEMA_OFFSET,
452 PROPERTY_MAP_SCHEMA_OFFSET,
453 PROPERTY_POINTER_SCHEMA_OFFSET,
454 PROPERTY_SCHEMA_OFFSET,
455 METHOD_SEMA_SCHEMA_OFFSET,
456 METHOD_IMPL_SCHEMA_OFFSET,
457 MODULEREF_SCHEMA_OFFSET, /* 0x1a */
458 TYPESPEC_SCHEMA_OFFSET,
459 IMPLMAP_SCHEMA_OFFSET,
460 FIELD_RVA_SCHEMA_OFFSET,
461 NULL_SCHEMA_OFFSET,
462 NULL_SCHEMA_OFFSET,
463 ASSEMBLY_SCHEMA_OFFSET, /* 0x20 */
464 ASSEMBLYPROC_SCHEMA_OFFSET,
465 ASSEMBLYOS_SCHEMA_OFFSET,
466 ASSEMBLYREF_SCHEMA_OFFSET,
467 ASSEMBLYREFPROC_SCHEMA_OFFSET,
468 ASSEMBLYREFOS_SCHEMA_OFFSET,
469 FILE_SCHEMA_OFFSET,
470 EXPORTED_TYPE_SCHEMA_OFFSET,
471 MANIFEST_SCHEMA_OFFSET,
472 NESTED_CLASS_SCHEMA_OFFSET,
473 GENPARAM_SCHEMA_OFFSET, /* 0x2a */
474 METHOD_SPEC_SCHEMA_OFFSET,
475 GEN_CONSTRAINT_SCHEMA_OFFSET,
476 NULL_SCHEMA_OFFSET,
477 NULL_SCHEMA_OFFSET,
478 NULL_SCHEMA_OFFSET,
479 DOCUMENT_SCHEMA_OFFSET, /* 0x30 */
480 METHODBODY_SCHEMA_OFFSET,
481 LOCALSCOPE_SCHEMA_OFFSET,
482 LOCALVARIABLE_SCHEMA_OFFSET,
483 LOCALCONSTANT_SCHEMA_OFFSET,
484 IMPORTSCOPE_SCHEMA_OFFSET,
485 ASYNCMETHOD_SCHEMA_OFFSET,
486 CUSTOMDEBUGINFORMATION_SCHEMA_OFFSET
487 };
488
489 #ifdef HAVE_ARRAY_ELEM_INIT
490 #define MSGSTRFIELD(line) MSGSTRFIELD1(line)
491 #define MSGSTRFIELD1(line) str##line
492 static const struct msgstr_t {
493 #define TABLEDEF(a,b) char MSGSTRFIELD(__LINE__) [sizeof (b)];
494 #include "mono/cil/tables.def"
495 #undef TABLEDEF
496 } tablestr = {
497 #define TABLEDEF(a,b) b,
498 #include "mono/cil/tables.def"
499 #undef TABLEDEF
500 };
501 static const gint16 tableidx [] = {
502 #define TABLEDEF(a,b) [a] = offsetof (struct msgstr_t, MSGSTRFIELD(__LINE__)),
503 #include "mono/cil/tables.def"
504 #undef TABLEDEF
505 };
506
507 #else
508 #define TABLEDEF(a,b) b,
509 static const char* const
510 mono_tables_names [] = {
511 #include "mono/cil/tables.def"
512 NULL
513 };
514
515 #endif
516
517 // Amount initially reserved in each imageset's mempool.
518 // FIXME: This number is arbitrary, a more practical number should be found
519 #define INITIAL_IMAGE_SET_SIZE 1024
520
521 /**
522 * mono_meta_table_name:
523 * @table: table index
524 *
525 * Returns the name of the given ECMA metadata logical format table
526 * as described in ECMA 335, Partition II, Section 22.
527 *
528 * Returns: the name for the @table index
529 */
530 const char *
531 mono_meta_table_name (int table)
532 {
533 if ((table < 0) || (table > MONO_TABLE_LAST))
534 return "";
535
536 #ifdef HAVE_ARRAY_ELEM_INIT
537 return (const char*)&tablestr + tableidx [table];
538 #else
539 return mono_tables_names [table];
540 #endif
541 }
542
543 /* The guy who wrote the spec for this should not be allowed near a
544 * computer again.
545
546 If e is a coded token(see clause 23.1.7) that points into table ti out of n possible tables t0, .. tn-1,
547 then it is stored as e << (log n) & tag{ t0, .. tn-1}[ ti] using 2 bytes if the maximum number of
548 rows of tables t0, ..tn-1, is less than 2^16 - (log n), and using 4 bytes otherwise. The family of
549 finite maps tag{ t0, ..tn-1} is defined below. Note that to decode a physical row, you need the
550 inverse of this mapping.
551
552 */
553 #define rtsize(meta,s,b) (((s) < (1 << (b)) ? 2 : 4))
554
555 static inline int
556 idx_size (MonoImage *meta, int tableidx)
557 {
558 return meta->tables [tableidx].rows < 65536 ? 2 : 4;
559 }
560
561 static inline int
562 get_nrows (MonoImage *meta, int tableidx)
563 {
564 return meta->tables [tableidx].rows;
565 }
566
567 /* Reference: Partition II - 23.2.6 */
568 /*
569 * mono_metadata_compute_size:
570 * @meta: metadata context
571 * @tableindex: metadata table number
572 * @result_bitfield: pointer to guint32 where to store additional info
573 *
574 * mono_metadata_compute_size() computes the lenght in bytes of a single
575 * row in a metadata table. The size of each column is encoded in the
576 * @result_bitfield return value along with the number of columns in the table.
577 * the resulting bitfield should be handed to the mono_metadata_table_size()
578 * and mono_metadata_table_count() macros.
579 * This is a Mono runtime internal only function.
580 */
581 int
582 mono_metadata_compute_size (MonoImage *meta, int tableindex, guint32 *result_bitfield)
583 {
584 guint32 bitfield = 0;
585 int size = 0, field_size = 0;
586 int i, n, code;
587 int shift = 0;
588 const unsigned char *description = TableSchemas + table_description [tableindex];
589
590 for (i = 0; (code = description [i]) != MONO_MT_END; i++){
591 switch (code){
592 case MONO_MT_UINT32:
593 field_size = 4; break;
594
595 case MONO_MT_UINT16:
596 field_size = 2; break;
597
598 case MONO_MT_UINT8:
599 field_size = 1; break;
600
601 case MONO_MT_BLOB_IDX:
602 field_size = meta->idx_blob_wide ? 4 : 2; break;
603
604 case MONO_MT_STRING_IDX:
605 field_size = meta->idx_string_wide ? 4 : 2; break;
606
607 case MONO_MT_GUID_IDX:
608 field_size = meta->idx_guid_wide ? 4 : 2; break;
609
610 case MONO_MT_TABLE_IDX:
611 /* Uhm, a table index can point to other tables besides the current one
612 * so, it's not correct to use the rowcount of the current table to
613 * get the size for this column - lupus
614 */
615 switch (tableindex) {
616 case MONO_TABLE_ASSEMBLYREFOS:
617 g_assert (i == 3);
618 field_size = idx_size (meta, MONO_TABLE_ASSEMBLYREF); break;
619 case MONO_TABLE_ASSEMBLYREFPROCESSOR:
620 g_assert (i == 1);
621 field_size = idx_size (meta, MONO_TABLE_ASSEMBLYREF); break;
622 case MONO_TABLE_CLASSLAYOUT:
623 g_assert (i == 2);
624 field_size = idx_size (meta, MONO_TABLE_TYPEDEF); break;
625 case MONO_TABLE_EVENTMAP:
626 g_assert (i == 0 || i == 1);
627 field_size = i ? idx_size (meta, MONO_TABLE_EVENT):
628 idx_size (meta, MONO_TABLE_TYPEDEF);
629 break;
630 case MONO_TABLE_EVENT_POINTER:
631 g_assert (i == 0);
632 field_size = idx_size (meta, MONO_TABLE_EVENT); break;
633 case MONO_TABLE_EXPORTEDTYPE:
634 g_assert (i == 1);
635 /* the index is in another metadata file, so it must be 4 */
636 field_size = 4; break;
637 case MONO_TABLE_FIELDLAYOUT:
638 g_assert (i == 1);
639 field_size = idx_size (meta, MONO_TABLE_FIELD); break;
640 case MONO_TABLE_FIELDRVA:
641 g_assert (i == 1);
642 field_size = idx_size (meta, MONO_TABLE_FIELD); break;
643 case MONO_TABLE_FIELD_POINTER:
644 g_assert (i == 0);
645 field_size = idx_size (meta, MONO_TABLE_FIELD); break;
646 case MONO_TABLE_IMPLMAP:
647 g_assert (i == 3);
648 field_size = idx_size (meta, MONO_TABLE_MODULEREF); break;
649 case MONO_TABLE_INTERFACEIMPL:
650 g_assert (i == 0);
651 field_size = idx_size (meta, MONO_TABLE_TYPEDEF); break;
652 case MONO_TABLE_METHOD:
653 g_assert (i == 5);
654 field_size = idx_size (meta, MONO_TABLE_PARAM); break;
655 case MONO_TABLE_METHODIMPL:
656 g_assert (i == 0);
657 field_size = idx_size (meta, MONO_TABLE_TYPEDEF); break;
658 case MONO_TABLE_METHODSEMANTICS:
659 g_assert (i == 1);
660 field_size = idx_size (meta, MONO_TABLE_METHOD); break;
661 case MONO_TABLE_METHOD_POINTER:
662 g_assert (i == 0);
663 field_size = idx_size (meta, MONO_TABLE_METHOD); break;
664 case MONO_TABLE_NESTEDCLASS:
665 g_assert (i == 0 || i == 1);
666 field_size = idx_size (meta, MONO_TABLE_TYPEDEF); break;
667 case MONO_TABLE_PARAM_POINTER:
668 g_assert (i == 0);
669 field_size = idx_size (meta, MONO_TABLE_PARAM); break;
670 case MONO_TABLE_PROPERTYMAP:
671 g_assert (i == 0 || i == 1);
672 field_size = i ? idx_size (meta, MONO_TABLE_PROPERTY):
673 idx_size (meta, MONO_TABLE_TYPEDEF);
674 break;
675 case MONO_TABLE_PROPERTY_POINTER:
676 g_assert (i == 0);
677 field_size = idx_size (meta, MONO_TABLE_PROPERTY); break;
678 case MONO_TABLE_TYPEDEF:
679 g_assert (i == 4 || i == 5);
680 field_size = i == 4 ? idx_size (meta, MONO_TABLE_FIELD):
681 idx_size (meta, MONO_TABLE_METHOD);
682 break;
683 case MONO_TABLE_GENERICPARAM:
684 g_assert (i == 2);
685 n = MAX (get_nrows (meta, MONO_TABLE_METHOD), get_nrows (meta, MONO_TABLE_TYPEDEF));
686 /*This is a coded token for 2 tables, so takes 1 bit */
687 field_size = rtsize (meta, n, 16 - MONO_TYPEORMETHOD_BITS);
688 break;
689 case MONO_TABLE_GENERICPARAMCONSTRAINT:
690 g_assert (i == 0);
691 field_size = idx_size (meta, MONO_TABLE_GENERICPARAM);
692 break;
693 case MONO_TABLE_LOCALSCOPE:
694 switch (i) {
695 case 0:
696 // FIXME: This table is in another file
697 field_size = idx_size (meta, MONO_TABLE_METHOD);
698 break;
699 case 1:
700 field_size = idx_size (meta, MONO_TABLE_IMPORTSCOPE);
701 break;
702 case 2:
703 field_size = idx_size (meta, MONO_TABLE_LOCALVARIABLE);
704 break;
705 case 3:
706 field_size = idx_size (meta, MONO_TABLE_LOCALCONSTANT);
707 break;
708 default:
709 g_assert_not_reached ();
710 break;
711 }
712 break;
713 case MONO_TABLE_METHODBODY:
714 g_assert (i == 0);
715 field_size = idx_size (meta, MONO_TABLE_DOCUMENT); break;
716 case MONO_TABLE_IMPORTSCOPE:
717 g_assert(i == 0);
718 field_size = idx_size (meta, MONO_TABLE_IMPORTSCOPE); break;
719 case MONO_TABLE_STATEMACHINEMETHOD:
720 g_assert(i == 0 || i == 1);
721 field_size = idx_size(meta, MONO_TABLE_METHOD); break;
722 default:
723 g_error ("Can't handle MONO_MT_TABLE_IDX for table %d element %d", tableindex, i);
724 }
725 break;
726
727 /*
728 * HasConstant: ParamDef, FieldDef, Property
729 */
730 case MONO_MT_CONST_IDX:
731 n = MAX (get_nrows (meta, MONO_TABLE_PARAM),
732 get_nrows (meta, MONO_TABLE_FIELD));
733 n = MAX (n, get_nrows (meta, MONO_TABLE_PROPERTY));
734
735 /* 2 bits to encode tag */
736 field_size = rtsize (meta, n, 16-2);
737 break;
738
739 /*
740 * HasCustomAttribute: points to any table but
741 * itself.
742 */
743 case MONO_MT_HASCAT_IDX:
744 /*
745 * We believe that since the signature and
746 * permission are indexing the Blob heap,
747 * we should consider the blob size first
748 */
749 /* I'm not a believer - lupus
750 if (meta->idx_blob_wide){
751 field_size = 4;
752 break;
753 }*/
754
755 n = MAX (get_nrows (meta, MONO_TABLE_METHOD),
756 get_nrows (meta, MONO_TABLE_FIELD));
757 n = MAX (n, get_nrows (meta, MONO_TABLE_TYPEREF));
758 n = MAX (n, get_nrows (meta, MONO_TABLE_TYPEDEF));
759 n = MAX (n, get_nrows (meta, MONO_TABLE_PARAM));
760 n = MAX (n, get_nrows (meta, MONO_TABLE_INTERFACEIMPL));
761 n = MAX (n, get_nrows (meta, MONO_TABLE_MEMBERREF));
762 n = MAX (n, get_nrows (meta, MONO_TABLE_MODULE));
763 n = MAX (n, get_nrows (meta, MONO_TABLE_DECLSECURITY));
764 n = MAX (n, get_nrows (meta, MONO_TABLE_PROPERTY));
765 n = MAX (n, get_nrows (meta, MONO_TABLE_EVENT));
766 n = MAX (n, get_nrows (meta, MONO_TABLE_STANDALONESIG));
767 n = MAX (n, get_nrows (meta, MONO_TABLE_MODULEREF));
768 n = MAX (n, get_nrows (meta, MONO_TABLE_TYPESPEC));
769 n = MAX (n, get_nrows (meta, MONO_TABLE_ASSEMBLY));
770 n = MAX (n, get_nrows (meta, MONO_TABLE_ASSEMBLYREF));
771 n = MAX (n, get_nrows (meta, MONO_TABLE_FILE));
772 n = MAX (n, get_nrows (meta, MONO_TABLE_EXPORTEDTYPE));
773 n = MAX (n, get_nrows (meta, MONO_TABLE_MANIFESTRESOURCE));
774 n = MAX (n, get_nrows (meta, MONO_TABLE_GENERICPARAM));
775 n = MAX (n, get_nrows (meta, MONO_TABLE_GENERICPARAMCONSTRAINT));
776 n = MAX (n, get_nrows (meta, MONO_TABLE_METHODSPEC));
777
778 /* 5 bits to encode */
779 field_size = rtsize (meta, n, 16-5);
780 break;
781
782 /*
783 * HasCustomAttribute: points to any table but
784 * itself.
785 */
786
787 case MONO_MT_HASCUSTDEBUG_IDX:
788 n = MAX(get_nrows (meta, MONO_TABLE_METHOD),
789 get_nrows (meta, MONO_TABLE_FIELD));
790 n = MAX(n, get_nrows (meta, MONO_TABLE_TYPEREF));
791 n = MAX(n, get_nrows (meta, MONO_TABLE_TYPEDEF));
792 n = MAX(n, get_nrows (meta, MONO_TABLE_PARAM));
793 n = MAX(n, get_nrows (meta, MONO_TABLE_INTERFACEIMPL));
794 n = MAX(n, get_nrows (meta, MONO_TABLE_MEMBERREF));
795 n = MAX(n, get_nrows (meta, MONO_TABLE_MODULE));
796 n = MAX(n, get_nrows (meta, MONO_TABLE_DECLSECURITY));
797 n = MAX(n, get_nrows (meta, MONO_TABLE_PROPERTY));
798 n = MAX(n, get_nrows (meta, MONO_TABLE_EVENT));
799 n = MAX(n, get_nrows (meta, MONO_TABLE_STANDALONESIG));
800 n = MAX(n, get_nrows (meta, MONO_TABLE_MODULEREF));
801 n = MAX(n, get_nrows (meta, MONO_TABLE_TYPESPEC));
802 n = MAX(n, get_nrows (meta, MONO_TABLE_ASSEMBLY));
803 n = MAX(n, get_nrows (meta, MONO_TABLE_ASSEMBLYREF));
804 n = MAX(n, get_nrows (meta, MONO_TABLE_FILE));
805 n = MAX(n, get_nrows (meta, MONO_TABLE_EXPORTEDTYPE));
806 n = MAX(n, get_nrows (meta, MONO_TABLE_MANIFESTRESOURCE));
807 n = MAX(n, get_nrows (meta, MONO_TABLE_GENERICPARAM));
808 n = MAX(n, get_nrows (meta, MONO_TABLE_GENERICPARAMCONSTRAINT));
809 n = MAX(n, get_nrows (meta, MONO_TABLE_METHODSPEC));
810 n = MAX(n, get_nrows (meta, MONO_TABLE_DOCUMENT));
811 n = MAX(n, get_nrows (meta, MONO_TABLE_LOCALSCOPE));
812 n = MAX(n, get_nrows (meta, MONO_TABLE_LOCALVARIABLE));
813 n = MAX(n, get_nrows (meta, MONO_TABLE_LOCALCONSTANT));
814 n = MAX(n, get_nrows (meta, MONO_TABLE_IMPORTSCOPE));
815
816 /* 5 bits to encode */
817 field_size = rtsize(meta, n, 16 - 5);
818 break;
819
820 /*
821 * CustomAttributeType: TypeDef, TypeRef, MethodDef,
822 * MemberRef and String.
823 */
824 case MONO_MT_CAT_IDX:
825 /* String is a heap, if it is wide, we know the size */
826 /* See above, nope.
827 if (meta->idx_string_wide){
828 field_size = 4;
829 break;
830 }*/
831
832 n = MAX (get_nrows (meta, MONO_TABLE_TYPEREF),
833 get_nrows (meta, MONO_TABLE_TYPEDEF));
834 n = MAX (n, get_nrows (meta, MONO_TABLE_METHOD));
835 n = MAX (n, get_nrows (meta, MONO_TABLE_MEMBERREF));
836
837 /* 3 bits to encode */
838 field_size = rtsize (meta, n, 16-3);
839 break;
840
841 /*
842 * HasDeclSecurity: Typedef, MethodDef, Assembly
843 */
844 case MONO_MT_HASDEC_IDX:
845 n = MAX (get_nrows (meta, MONO_TABLE_TYPEDEF),
846 get_nrows (meta, MONO_TABLE_METHOD));
847 n = MAX (n, get_nrows (meta, MONO_TABLE_ASSEMBLY));
848
849 /* 2 bits to encode */
850 field_size = rtsize (meta, n, 16-2);
851 break;
852
853 /*
854 * Implementation: File, AssemblyRef, ExportedType
855 */
856 case MONO_MT_IMPL_IDX:
857 n = MAX (get_nrows (meta, MONO_TABLE_FILE),
858 get_nrows (meta, MONO_TABLE_ASSEMBLYREF));
859 n = MAX (n, get_nrows (meta, MONO_TABLE_EXPORTEDTYPE));
860
861 /* 2 bits to encode tag */
862 field_size = rtsize (meta, n, 16-2);
863 break;
864
865 /*
866 * HasFieldMarshall: FieldDef, ParamDef
867 */
868 case MONO_MT_HFM_IDX:
869 n = MAX (get_nrows (meta, MONO_TABLE_FIELD),
870 get_nrows (meta, MONO_TABLE_PARAM));
871
872 /* 1 bit used to encode tag */
873 field_size = rtsize (meta, n, 16-1);
874 break;
875
876 /*
877 * MemberForwarded: FieldDef, MethodDef
878 */
879 case MONO_MT_MF_IDX:
880 n = MAX (get_nrows (meta, MONO_TABLE_FIELD),
881 get_nrows (meta, MONO_TABLE_METHOD));
882
883 /* 1 bit used to encode tag */
884 field_size = rtsize (meta, n, 16-1);
885 break;
886
887 /*
888 * TypeDefOrRef: TypeDef, ParamDef, TypeSpec
889 * LAMESPEC
890 * It is TypeDef, _TypeRef_, TypeSpec, instead.
891 */
892 case MONO_MT_TDOR_IDX:
893 n = MAX (get_nrows (meta, MONO_TABLE_TYPEDEF),
894 get_nrows (meta, MONO_TABLE_TYPEREF));
895 n = MAX (n, get_nrows (meta, MONO_TABLE_TYPESPEC));
896
897 /* 2 bits to encode */
898 field_size = rtsize (meta, n, 16-2);
899 break;
900
901 /*
902 * MemberRefParent: TypeDef, TypeRef, MethodDef, ModuleRef, TypeSpec, MemberRef
903 */
904 case MONO_MT_MRP_IDX:
905 n = MAX (get_nrows (meta, MONO_TABLE_TYPEDEF),
906 get_nrows (meta, MONO_TABLE_TYPEREF));
907 n = MAX (n, get_nrows (meta, MONO_TABLE_METHOD));
908 n = MAX (n, get_nrows (meta, MONO_TABLE_MODULEREF));
909 n = MAX (n, get_nrows (meta, MONO_TABLE_TYPESPEC));
910
911 /* 3 bits to encode */
912 field_size = rtsize (meta, n, 16 - 3);
913 break;
914
915 /*
916 * MethodDefOrRef: MethodDef, MemberRef
917 */
918 case MONO_MT_MDOR_IDX:
919 n = MAX (get_nrows (meta, MONO_TABLE_METHOD),
920 get_nrows (meta, MONO_TABLE_MEMBERREF));
921
922 /* 1 bit used to encode tag */
923 field_size = rtsize (meta, n, 16-1);
924 break;
925
926 /*
927 * HasSemantics: Property, Event
928 */
929 case MONO_MT_HS_IDX:
930 n = MAX (get_nrows (meta, MONO_TABLE_PROPERTY),
931 get_nrows (meta, MONO_TABLE_EVENT));
932
933 /* 1 bit used to encode tag */
934 field_size = rtsize (meta, n, 16-1);
935 break;
936
937 /*
938 * ResolutionScope: Module, ModuleRef, AssemblyRef, TypeRef
939 */
940 case MONO_MT_RS_IDX:
941 n = MAX (get_nrows (meta, MONO_TABLE_MODULE),
942 get_nrows (meta, MONO_TABLE_MODULEREF));
943 n = MAX (n, get_nrows (meta, MONO_TABLE_ASSEMBLYREF));
944 n = MAX (n, get_nrows (meta, MONO_TABLE_TYPEREF));
945
946 /* 2 bits used to encode tag (ECMA spec claims 3) */
947 field_size = rtsize (meta, n, 16 - 2);
948 break;
949 }
950
951 /*
952 * encode field size as follows (we just need to
953 * distinguish them).
954 *
955 * 4 -> 3
956 * 2 -> 1
957 * 1 -> 0
958 */
959 bitfield |= (field_size-1) << shift;
960 shift += 2;
961 size += field_size;
962 /*g_print ("table %02x field %d size %d\n", tableindex, i, field_size);*/
963 }
964
965 *result_bitfield = (i << 24) | bitfield;
966 return size;
967 }
968
969 /**
970 * mono_metadata_compute_table_bases:
971 * @meta: metadata context to compute table values
972 *
973 * Computes the table bases for the metadata structure.
974 * This is an internal function used by the image loader code.
975 */
976 void
977 mono_metadata_compute_table_bases (MonoImage *meta)
978 {
979 int i;
980 const char *base = meta->tables_base;
981
982 for (i = 0; i < MONO_TABLE_NUM; i++) {
983 MonoTableInfo *table = &meta->tables [i];
984 if (table->rows == 0)
985 continue;
986
987 table->row_size = mono_metadata_compute_size (meta, i, &table->size_bitfield);
988 table->base = base;
989 base += table->rows * table->row_size;
990 }
991 }
992
993 /**
994 * mono_metadata_locate:
995 * @meta: metadata context
996 * @table: table code.
997 * @idx: index of element to retrieve from @table.
998 *
999 * Returns: a pointer to the @idx element in the metadata table
1000 * whose code is @table.
1001 */
1002 const char *
1003 mono_metadata_locate (MonoImage *meta, int table, int idx)
1004 {
1005 /* idx == 0 refers always to NULL */
1006 g_return_val_if_fail (idx > 0 && idx <= meta->tables [table].rows, ""); /*FIXME shouldn't we return NULL here?*/
1007
1008 return meta->tables [table].base + (meta->tables [table].row_size * (idx - 1));
1009 }
1010
1011 /**
1012 * mono_metadata_locate_token:
1013 * @meta: metadata context
1014 * @token: metadata token
1015 *
1016 * Returns: a pointer to the data in the metadata represented by the
1017 * token #token.
1018 */
1019 const char *
1020 mono_metadata_locate_token (MonoImage *meta, guint32 token)
1021 {
1022 return mono_metadata_locate (meta, token >> 24, token & 0xffffff);
1023 }
1024
1025 /**
1026 * mono_metadata_string_heap:
1027 * @meta: metadata context
1028 * @index: index into the string heap.
1029 *
1030 * Returns: an in-memory pointer to the @index in the string heap.
1031 */
1032 const char *
1033 mono_metadata_string_heap (MonoImage *meta, guint32 index)
1034 {
1035 g_assert (index < meta->heap_strings.size);
1036 g_return_val_if_fail (index < meta->heap_strings.size, "");
1037 return meta->heap_strings.data + index;
1038 }
1039
1040 /**
1041 * mono_metadata_user_string:
1042 * @meta: metadata context
1043 * @index: index into the user string heap.
1044 *
1045 * Returns: an in-memory pointer to the @index in the user string heap ("#US").
1046 */
1047 const char *
1048 mono_metadata_user_string (MonoImage *meta, guint32 index)
1049 {
1050 g_assert (index < meta->heap_us.size);
1051 g_return_val_if_fail (index < meta->heap_us.size, "");
1052 return meta->heap_us.data + index;
1053 }
1054
1055 /**
1056 * mono_metadata_blob_heap:
1057 * @meta: metadata context
1058 * @index: index into the blob.
1059 *
1060 * Returns: an in-memory pointer to the @index in the Blob heap.
1061 */
1062 const char *
1063 mono_metadata_blob_heap (MonoImage *meta, guint32 index)
1064 {
1065 g_assert (index < meta->heap_blob.size);
1066 g_return_val_if_fail (index < meta->heap_blob.size, "");/*FIXME shouldn't we return NULL and check for index == 0?*/
1067 return meta->heap_blob.data + index;
1068 }
1069
1070 /**
1071 * mono_metadata_guid_heap:
1072 * @meta: metadata context
1073 * @index: index into the guid heap.
1074 *
1075 * Returns: an in-memory pointer to the @index in the guid heap.
1076 */
1077 const char *
1078 mono_metadata_guid_heap (MonoImage *meta, guint32 index)
1079 {
1080 --index;
1081 index *= 16; /* adjust for guid size and 1-based index */
1082 g_return_val_if_fail (index < meta->heap_guid.size, "");
1083 return meta->heap_guid.data + index;
1084 }
1085
1086 static const unsigned char *
1087 dword_align (const unsigned char *ptr)
1088 {
1089 #if SIZEOF_VOID_P == 8
1090 return (const unsigned char *) (((guint64) (ptr + 3)) & ~3);
1091 #else
1092 return (const unsigned char *) (((guint32) (ptr + 3)) & ~3);
1093 #endif
1094 }
1095
1096 /**
1097 * mono_metadata_decode_row:
1098 * @t: table to extract information from.
1099 * @idx: index in table.
1100 * @res: array of @res_size cols to store the results in
1101 *
1102 * This decompresses the metadata element @idx in table @t
1103 * into the guint32 @res array that has res_size elements
1104 */
1105 void
1106 mono_metadata_decode_row (const MonoTableInfo *t, int idx, guint32 *res, int res_size)
1107 {
1108 guint32 bitfield = t->size_bitfield;
1109 int i, count = mono_metadata_table_count (bitfield);
1110 const char *data;
1111
1112 g_assert (idx < t->rows);
1113 g_assert (idx >= 0);
1114 data = t->base + idx * t->row_size;
1115
1116 g_assert (res_size == count);
1117
1118 for (i = 0; i < count; i++) {
1119 int n = mono_metadata_table_size (bitfield, i);
1120
1121 switch (n){
1122 case 1:
1123 res [i] = *data; break;
1124 case 2:
1125 res [i] = read16 (data); break;
1126 case 4:
1127 res [i] = read32 (data); break;
1128 default:
1129 g_assert_not_reached ();
1130 }
1131 data += n;
1132 }
1133 }
1134
1135 /**
1136 * mono_metadata_decode_row_col:
1137 * @t: table to extract information from.
1138 * @idx: index for row in table.
1139 * @col: column in the row.
1140 *
1141 * This function returns the value of column @col from the @idx
1142 * row in the table @t.
1143 */
1144 guint32
1145 mono_metadata_decode_row_col (const MonoTableInfo *t, int idx, guint col)
1146 {
1147 guint32 bitfield = t->size_bitfield;
1148 int i;
1149 register const char *data;
1150 register int n;
1151
1152 g_assert (idx < t->rows);
1153 g_assert (col < mono_metadata_table_count (bitfield));
1154 data = t->base + idx * t->row_size;
1155
1156 n = mono_metadata_table_size (bitfield, 0);
1157 for (i = 0; i < col; ++i) {
1158 data += n;
1159 n = mono_metadata_table_size (bitfield, i + 1);
1160 }
1161 switch (n) {
1162 case 1:
1163 return *data;
1164 case 2:
1165 return read16 (data);
1166 case 4:
1167 return read32 (data);
1168 default:
1169 g_assert_not_reached ();
1170 }
1171 return 0;
1172 }
1173
1174 /**
1175 * mono_metadata_decode_blob_size:
1176 * @ptr: pointer to a blob object
1177 * @rptr: the new position of the pointer
1178 *
1179 * This decodes a compressed size as described by 23.1.4 (a blob or user string object)
1180 *
1181 * Returns: the size of the blob object
1182 */
1183 guint32
1184 mono_metadata_decode_blob_size (const char *xptr, const char **rptr)
1185 {
1186 const unsigned char *ptr = (const unsigned char *)xptr;
1187 guint32 size;
1188
1189 if ((*ptr & 0x80) == 0){
1190 size = ptr [0] & 0x7f;
1191 ptr++;
1192 } else if ((*ptr & 0x40) == 0){
1193 size = ((ptr [0] & 0x3f) << 8) + ptr [1];
1194 ptr += 2;
1195 } else {
1196 size = ((ptr [0] & 0x1f) << 24) +
1197 (ptr [1] << 16) +
1198 (ptr [2] << 8) +
1199 ptr [3];
1200 ptr += 4;
1201 }
1202 if (rptr)
1203 *rptr = (char*)ptr;
1204 return size;
1205 }
1206
1207 /**
1208 * mono_metadata_decode_value:
1209 * @ptr: pointer to decode from
1210 * @rptr: the new position of the pointer
1211 *
1212 * This routine decompresses 32-bit values as specified in the "Blob and
1213 * Signature" section (23.2)
1214 *
1215 * Returns: the decoded value
1216 */
1217 guint32
1218 mono_metadata_decode_value (const char *_ptr, const char **rptr)
1219 {
1220 const unsigned char *ptr = (const unsigned char *) _ptr;
1221 unsigned char b = *ptr;
1222 guint32 len;
1223
1224 if ((b & 0x80) == 0){
1225 len = b;
1226 ++ptr;
1227 } else if ((b & 0x40) == 0){
1228 len = ((b & 0x3f) << 8 | ptr [1]);
1229 ptr += 2;
1230 } else {
1231 len = ((b & 0x1f) << 24) |
1232 (ptr [1] << 16) |
1233 (ptr [2] << 8) |
1234 ptr [3];
1235 ptr += 4;
1236 }
1237 if (rptr)
1238 *rptr = (char*)ptr;
1239
1240 return len;
1241 }
1242
1243 /**
1244 * mono_metadata_decode_signed_value:
1245 * @ptr: pointer to decode from
1246 * @rptr: the new position of the pointer
1247 *
1248 * This routine decompresses 32-bit signed values
1249 * (not specified in the spec)
1250 *
1251 * Returns: the decoded value
1252 */
1253 gint32
1254 mono_metadata_decode_signed_value (const char *ptr, const char **rptr)
1255 {
1256 guint32 uval = mono_metadata_decode_value (ptr, rptr);
1257 gint32 ival = uval >> 1;
1258 if (!(uval & 1))
1259 return ival;
1260 /* ival is a truncated 2's complement negative number. */
1261 if (ival < 0x40)
1262 /* 6 bits = 7 bits for compressed representation (top bit is '0') - 1 sign bit */
1263 return ival - 0x40;
1264 if (ival < 0x2000)
1265 /* 13 bits = 14 bits for compressed representation (top bits are '10') - 1 sign bit */
1266 return ival - 0x2000;
1267 if (ival < 0x10000000)
1268 /* 28 bits = 29 bits for compressed representation (top bits are '110') - 1 sign bit */
1269 return ival - 0x10000000;
1270 g_assert (ival < 0x20000000);
1271 g_warning ("compressed signed value appears to use 29 bits for compressed representation: %x (raw: %8x)", ival, uval);
1272 return ival - 0x20000000;
1273 }
1274
1275 /*
1276 * Translates the given 1-based index into the Method, Field, Event, or Param tables
1277 * using the *Ptr tables in uncompressed metadata, if they are available.
1278 *
1279 * FIXME: The caller is not forced to call this function, which is error-prone, since
1280 * forgetting to call it would only show up as a bug on uncompressed metadata.
1281 */
1282 guint32
1283 mono_metadata_translate_token_index (MonoImage *image, int table, guint32 idx)
1284 {
1285 if (!image->uncompressed_metadata)
1286 return idx;
1287
1288 switch (table) {
1289 case MONO_TABLE_METHOD:
1290 if (image->tables [MONO_TABLE_METHOD_POINTER].rows)
1291 return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_METHOD_POINTER], idx - 1, MONO_METHOD_POINTER_METHOD);
1292 else
1293 return idx;
1294 case MONO_TABLE_FIELD:
1295 if (image->tables [MONO_TABLE_FIELD_POINTER].rows)
1296 return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_FIELD_POINTER], idx - 1, MONO_FIELD_POINTER_FIELD);
1297 else
1298 return idx;
1299 case MONO_TABLE_EVENT:
1300 if (image->tables [MONO_TABLE_EVENT_POINTER].rows)
1301 return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_EVENT_POINTER], idx - 1, MONO_EVENT_POINTER_EVENT);
1302 else
1303 return idx;
1304 case MONO_TABLE_PROPERTY:
1305 if (image->tables [MONO_TABLE_PROPERTY_POINTER].rows)
1306 return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_PROPERTY_POINTER], idx - 1, MONO_PROPERTY_POINTER_PROPERTY);
1307 else
1308 return idx;
1309 case MONO_TABLE_PARAM:
1310 if (image->tables [MONO_TABLE_PARAM_POINTER].rows)
1311 return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_PARAM_POINTER], idx - 1, MONO_PARAM_POINTER_PARAM);
1312 else
1313 return idx;
1314 default:
1315 return idx;
1316 }
1317 }
1318
1319 /**
1320 * mono_metadata_decode_table_row:
1321 *
1322 * Same as mono_metadata_decode_row, but takes an IMAGE+TABLE ID pair, and takes
1323 * uncompressed metadata into account, so it should be used to access the
1324 * Method, Field, Param and Event tables when the access is made from metadata, i.e.
1325 * IDX is retrieved from a metadata table, like MONO_TYPEDEF_FIELD_LIST.
1326 */
1327 void
1328 mono_metadata_decode_table_row (MonoImage *image, int table, int idx, guint32 *res, int res_size)
1329 {
1330 if (image->uncompressed_metadata)
1331 idx = mono_metadata_translate_token_index (image, table, idx + 1) - 1;
1332
1333 mono_metadata_decode_row (&image->tables [table], idx, res, res_size);
1334 }
1335
1336 /**
1337 * mono_metadata_decode_table_row_col:
1338 *
1339 * Same as mono_metadata_decode_row_col, but takes an IMAGE+TABLE ID pair, and takes
1340 * uncompressed metadata into account, so it should be used to access the
1341 * Method, Field, Param and Event tables.
1342 */
1343 guint32 mono_metadata_decode_table_row_col (MonoImage *image, int table, int idx, guint col)
1344 {
1345 if (image->uncompressed_metadata)
1346 idx = mono_metadata_translate_token_index (image, table, idx + 1) - 1;
1347
1348 return mono_metadata_decode_row_col (&image->tables [table], idx, col);
1349 }
1350
1351 /*
1352 * mono_metadata_parse_typedef_or_ref:
1353 * @m: a metadata context.
1354 * @ptr: a pointer to an encoded TypedefOrRef in @m
1355 * @rptr: pointer updated to match the end of the decoded stream
1356 *
1357 * Returns: a token valid in the @m metadata decoded from
1358 * the compressed representation.
1359 */
1360 guint32
1361 mono_metadata_parse_typedef_or_ref (MonoImage *m, const char *ptr, const char **rptr)
1362 {
1363 guint32 token;
1364 token = mono_metadata_decode_value (ptr, &ptr);
1365 if (rptr)
1366 *rptr = ptr;
1367 return mono_metadata_token_from_dor (token);
1368 }
1369
1370 /*
1371 * mono_metadata_parse_custom_mod:
1372 * @m: a metadata context.
1373 * @dest: storage where the info about the custom modifier is stored (may be NULL)
1374 * @ptr: a pointer to (possibly) the start of a custom modifier list
1375 * @rptr: pointer updated to match the end of the decoded stream
1376 *
1377 * Checks if @ptr points to a type custom modifier compressed representation.
1378 *
1379 * Returns: #TRUE if a custom modifier was found, #FALSE if not.
1380 */
1381 int
1382 mono_metadata_parse_custom_mod (MonoImage *m, MonoCustomMod *dest, const char *ptr, const char **rptr)
1383 {
1384 MonoCustomMod local;
1385 if ((*ptr == MONO_TYPE_CMOD_OPT) || (*ptr == MONO_TYPE_CMOD_REQD)) {
1386 if (!dest)
1387 dest = &local;
1388 dest->required = *ptr == MONO_TYPE_CMOD_REQD ? 1 : 0;
1389 dest->token = mono_metadata_parse_typedef_or_ref (m, ptr + 1, rptr);
1390 return TRUE;
1391 }
1392 return FALSE;
1393 }
1394
1395 /*
1396 * mono_metadata_parse_array_internal:
1397 * @m: a metadata context.
1398 * @transient: whenever to allocate data from the heap
1399 * @ptr: a pointer to an encoded array description.
1400 * @rptr: pointer updated to match the end of the decoded stream
1401 *
1402 * Decodes the compressed array description found in the metadata @m at @ptr.
1403 *
1404 * Returns: a #MonoArrayType structure describing the array type
1405 * and dimensions. Memory is allocated from the heap or from the image mempool, depending
1406 * on the value of @transient.
1407 *
1408 * LOCKING: Acquires the loader lock
1409 */
1410 static MonoArrayType *
1411 mono_metadata_parse_array_internal (MonoImage *m, MonoGenericContainer *container,
1412 gboolean transient, const char *ptr, const char **rptr, MonoError *error)
1413 {
1414 int i;
1415 MonoArrayType *array;
1416 MonoType *etype;
1417
1418 etype = mono_metadata_parse_type_checked (m, container, 0, FALSE, ptr, &ptr, error); //FIXME this doesn't respect @transient
1419 if (!etype)
1420 return NULL;
1421
1422 array = transient ? (MonoArrayType *)g_malloc0 (sizeof (MonoArrayType)) : (MonoArrayType *)mono_image_alloc0 (m, sizeof (MonoArrayType));
1423 array->eklass = mono_class_from_mono_type (etype);
1424 array->rank = mono_metadata_decode_value (ptr, &ptr);
1425
1426 array->numsizes = mono_metadata_decode_value (ptr, &ptr);
1427 if (array->numsizes)
1428 array->sizes = transient ? (int *)g_malloc0 (sizeof (int) * array->numsizes) : (int *)mono_image_alloc0 (m, sizeof (int) * array->numsizes);
1429 for (i = 0; i < array->numsizes; ++i)
1430 array->sizes [i] = mono_metadata_decode_value (ptr, &ptr);
1431
1432 array->numlobounds = mono_metadata_decode_value (ptr, &ptr);
1433 if (array->numlobounds)
1434 array->lobounds = transient ? (int *)g_malloc0 (sizeof (int) * array->numlobounds) : (int *)mono_image_alloc0 (m, sizeof (int) * array->numlobounds);
1435 for (i = 0; i < array->numlobounds; ++i)
1436 array->lobounds [i] = mono_metadata_decode_signed_value (ptr, &ptr);
1437
1438 if (rptr)
1439 *rptr = ptr;
1440 return array;
1441 }
1442
1443 MonoArrayType *
1444 mono_metadata_parse_array (MonoImage *m, const char *ptr, const char **rptr)
1445 {
1446 MonoError error;
1447 MonoArrayType *ret = mono_metadata_parse_array_internal (m, NULL, FALSE, ptr, rptr, &error);
1448 mono_error_cleanup (&error);
1449
1450 return ret;
1451 }
1452
1453 /*
1454 * mono_metadata_free_array:
1455 * @array: array description
1456 *
1457 * Frees the array description returned from mono_metadata_parse_array().
1458 */
1459 void
1460 mono_metadata_free_array (MonoArrayType *array)
1461 {
1462 g_free (array->sizes);
1463 g_free (array->lobounds);
1464 g_free (array);
1465 }
1466
1467 /*
1468 * need to add common field and param attributes combinations:
1469 * [out] param
1470 * public static
1471 * public static literal
1472 * private
1473 * private static
1474 * private static literal
1475 */
1476 static const MonoType
1477 builtin_types[] = {
1478 /* data, attrs, type, nmods, byref, pinned */
1479 {{NULL}, 0, MONO_TYPE_VOID, 0, 0, 0},
1480 {{NULL}, 0, MONO_TYPE_BOOLEAN, 0, 0, 0},
1481 {{NULL}, 0, MONO_TYPE_BOOLEAN, 0, 1, 0},
1482 {{NULL}, 0, MONO_TYPE_CHAR, 0, 0, 0},
1483 {{NULL}, 0, MONO_TYPE_CHAR, 0, 1, 0},
1484 {{NULL}, 0, MONO_TYPE_I1, 0, 0, 0},
1485 {{NULL}, 0, MONO_TYPE_I1, 0, 1, 0},
1486 {{NULL}, 0, MONO_TYPE_U1, 0, 0, 0},
1487 {{NULL}, 0, MONO_TYPE_U1, 0, 1, 0},
1488 {{NULL}, 0, MONO_TYPE_I2, 0, 0, 0},
1489 {{NULL}, 0, MONO_TYPE_I2, 0, 1, 0},
1490 {{NULL}, 0, MONO_TYPE_U2, 0, 0, 0},
1491 {{NULL}, 0, MONO_TYPE_U2, 0, 1, 0},
1492 {{NULL}, 0, MONO_TYPE_I4, 0, 0, 0},
1493 {{NULL}, 0, MONO_TYPE_I4, 0, 1, 0},
1494 {{NULL}, 0, MONO_TYPE_U4, 0, 0, 0},
1495 {{NULL}, 0, MONO_TYPE_U4, 0, 1, 0},
1496 {{NULL}, 0, MONO_TYPE_I8, 0, 0, 0},
1497 {{NULL}, 0, MONO_TYPE_I8, 0, 1, 0},
1498 {{NULL}, 0, MONO_TYPE_U8, 0, 0, 0},
1499 {{NULL}, 0, MONO_TYPE_U8, 0, 1, 0},
1500 {{NULL}, 0, MONO_TYPE_R4, 0, 0, 0},
1501 {{NULL}, 0, MONO_TYPE_R4, 0, 1, 0},
1502 {{NULL}, 0, MONO_TYPE_R8, 0, 0, 0},
1503 {{NULL}, 0, MONO_TYPE_R8, 0, 1, 0},
1504 {{NULL}, 0, MONO_TYPE_STRING, 0, 0, 0},
1505 {{NULL}, 0, MONO_TYPE_STRING, 0, 1, 0},
1506 {{NULL}, 0, MONO_TYPE_OBJECT, 0, 0, 0},
1507 {{NULL}, 0, MONO_TYPE_OBJECT, 0, 1, 0},
1508 {{NULL}, 0, MONO_TYPE_TYPEDBYREF, 0, 0, 0},
1509 {{NULL}, 0, MONO_TYPE_I, 0, 0, 0},
1510 {{NULL}, 0, MONO_TYPE_I, 0, 1, 0},
1511 {{NULL}, 0, MONO_TYPE_U, 0, 0, 0},
1512 {{NULL}, 0, MONO_TYPE_U, 0, 1, 0},
1513 };
1514
1515 #define NBUILTIN_TYPES() (sizeof (builtin_types) / sizeof (builtin_types [0]))
1516
1517 static GHashTable *type_cache = NULL;
1518 static int next_generic_inst_id = 0;
1519
1520 /* Protected by image_sets_mutex */
1521 static MonoImageSet *mscorlib_image_set;
1522 /* Protected by image_sets_mutex */
1523 static GPtrArray *image_sets;
1524 static mono_mutex_t image_sets_mutex;
1525
1526 static guint mono_generic_class_hash (gconstpointer data);
1527
1528 /*
1529 * MonoTypes with modifies are never cached, so we never check or use that field.
1530 */
1531 static guint
1532 mono_type_hash (gconstpointer data)
1533 {
1534 const MonoType *type = (const MonoType *) data;
1535 if (type->type == MONO_TYPE_GENERICINST)
1536 return mono_generic_class_hash (type->data.generic_class);
1537 else
1538 return type->type | (type->byref << 8) | (type->attrs << 9);
1539 }
1540
1541 static gint
1542 mono_type_equal (gconstpointer ka, gconstpointer kb)
1543 {
1544 const MonoType *a = (const MonoType *) ka;
1545 const MonoType *b = (const MonoType *) kb;
1546
1547 if (a->type != b->type || a->byref != b->byref || a->attrs != b->attrs || a->pinned != b->pinned)
1548 return 0;
1549 /* need other checks */
1550 return 1;
1551 }
1552
1553 guint
1554 mono_metadata_generic_inst_hash (gconstpointer data)
1555 {
1556 const MonoGenericInst *ginst = (const MonoGenericInst *) data;
1557 guint hash = 0;
1558 int i;
1559
1560 for (i = 0; i < ginst->type_argc; ++i) {
1561 hash *= 13;
1562 hash += mono_metadata_type_hash (ginst->type_argv [i]);
1563 }
1564
1565 return hash ^ (ginst->is_open << 8);
1566 }
1567
1568 static gboolean
1569 mono_generic_inst_equal_full (const MonoGenericInst *a, const MonoGenericInst *b, gboolean signature_only)
1570 {
1571 int i;
1572
1573 // An optimization: if the ids of two insts are the same, we know they are the same inst and don't check contents.
1574 // Furthermore, because we perform early de-duping, if the ids differ, we know the contents differ.
1575 #ifndef MONO_SMALL_CONFIG // Optimization does not work in MONO_SMALL_CONFIG: There are no IDs
1576 if (a->id && b->id) { // "id 0" means "object has no id"-- de-duping hasn't been performed yet, must check contents.
1577 if (a->id == b->id)
1578 return TRUE;
1579 // In signature-comparison mode id equality implies object equality, but this is not true for inequality.
1580 // Two separate objects could have signature-equavalent contents.
1581 if (!signature_only)
1582 return FALSE;
1583 }
1584 #endif
1585
1586 if (a->is_open != b->is_open || a->type_argc != b->type_argc)
1587 return FALSE;
1588 for (i = 0; i < a->type_argc; ++i) {
1589 if (!do_mono_metadata_type_equal (a->type_argv [i], b->type_argv [i], signature_only))
1590 return FALSE;
1591 }
1592 return TRUE;
1593 }
1594
1595 gboolean
1596 mono_metadata_generic_inst_equal (gconstpointer ka, gconstpointer kb)
1597 {
1598 const MonoGenericInst *a = (const MonoGenericInst *) ka;
1599 const MonoGenericInst *b = (const MonoGenericInst *) kb;
1600
1601 return mono_generic_inst_equal_full (a, b, FALSE);
1602 }
1603
1604 static guint
1605 mono_generic_class_hash (gconstpointer data)
1606 {
1607 const MonoGenericClass *gclass = (const MonoGenericClass *) data;
1608 guint hash = mono_metadata_type_hash (&gclass->container_class->byval_arg);
1609
1610 hash *= 13;
1611 hash += gclass->is_tb_open;
1612 hash += mono_metadata_generic_context_hash (&gclass->context);
1613
1614 return hash;
1615 }
1616
1617 static gboolean
1618 mono_generic_class_equal (gconstpointer ka, gconstpointer kb)
1619 {
1620 const MonoGenericClass *a = (const MonoGenericClass *) ka;
1621 const MonoGenericClass *b = (const MonoGenericClass *) kb;
1622
1623 return _mono_metadata_generic_class_equal (a, b, FALSE);
1624 }
1625
1626 /**
1627 * mono_metadata_init:
1628 *
1629 * Initialize the global variables of this module.
1630 * This is a Mono runtime internal function.
1631 */
1632 void
1633 mono_metadata_init (void)
1634 {
1635 int i;
1636
1637 type_cache = g_hash_table_new (mono_type_hash, mono_type_equal);
1638
1639 for (i = 0; i < NBUILTIN_TYPES (); ++i)
1640 g_hash_table_insert (type_cache, (gpointer) &builtin_types [i], (gpointer) &builtin_types [i]);
1641
1642 mono_os_mutex_init_recursive (&image_sets_mutex);
1643 }
1644
1645 /**
1646 * mono_metadata_cleanup:
1647 *
1648 * Free all resources used by this module.
1649 * This is a Mono runtime internal function.
1650 */
1651 void
1652 mono_metadata_cleanup (void)
1653 {
1654 g_hash_table_destroy (type_cache);
1655 type_cache = NULL;
1656 g_ptr_array_free (image_sets, TRUE);
1657 image_sets = NULL;
1658 mono_os_mutex_destroy (&image_sets_mutex);
1659 }
1660
1661 /**
1662 * mono_metadata_parse_type:
1663 * @m: metadata context
1664 * @mode: king of type that may be found at @ptr
1665 * @opt_attrs: optional attributes to store in the returned type
1666 * @ptr: pointer to the type representation
1667 * @rptr: pointer updated to match the end of the decoded stream
1668 * @transient: whenever to allocate the result from the heap or from a mempool
1669 *
1670 * Decode a compressed type description found at @ptr in @m.
1671 * @mode can be one of MONO_PARSE_MOD_TYPE, MONO_PARSE_PARAM, MONO_PARSE_RET,
1672 * MONO_PARSE_FIELD, MONO_PARSE_LOCAL, MONO_PARSE_TYPE.
1673 * This function can be used to decode type descriptions in method signatures,
1674 * field signatures, locals signatures etc.
1675 *
1676 * To parse a generic type, `generic_container' points to the current class'es
1677 * (the `generic_container' field in the MonoClass) or the current generic method's
1678 * (stored in image->property_hash) generic container.
1679 * When we encounter any MONO_TYPE_VAR or MONO_TYPE_MVAR's, they're looked up in
1680 * this MonoGenericContainer.
1681 *
1682 * LOCKING: Acquires the loader lock.
1683 *
1684 * Returns: a #MonoType structure representing the decoded type.
1685 */
1686 static MonoType*
1687 mono_metadata_parse_type_internal (MonoImage *m, MonoGenericContainer *container,
1688 short opt_attrs, gboolean transient, const char *ptr, const char **rptr, MonoError *error)
1689 {
1690 MonoType *type, *cached;
1691 MonoType stype;
1692 gboolean byref = FALSE;
1693 gboolean pinned = FALSE;
1694 const char *tmp_ptr;
1695 int count = 0; // Number of mod arguments
1696 gboolean found;
1697
1698 mono_error_init (error);
1699
1700 /*
1701 * According to the spec, custom modifiers should come before the byref
1702 * flag, but the IL produced by ilasm from the following signature:
1703 * object modopt(...) &
1704 * starts with a byref flag, followed by the modifiers. (bug #49802)
1705 * Also, this type seems to be different from 'object & modopt(...)'. Maybe
1706 * it would be better to treat byref as real type constructor instead of
1707 * a modifier...
1708 * Also, pinned should come before anything else, but some MSV++ produced
1709 * assemblies violate this (#bug 61990).
1710 */
1711
1712 /* Count the modifiers first */
1713 tmp_ptr = ptr;
1714 found = TRUE;
1715 while (found) {
1716 switch (*tmp_ptr) {
1717 case MONO_TYPE_PINNED:
1718 case MONO_TYPE_BYREF:
1719 ++tmp_ptr;
1720 break;
1721 case MONO_TYPE_CMOD_REQD:
1722 case MONO_TYPE_CMOD_OPT:
1723 count ++;
1724 mono_metadata_parse_custom_mod (m, NULL, tmp_ptr, &tmp_ptr);
1725 break;
1726 default:
1727 found = FALSE;
1728 }
1729 }
1730
1731 if (count) { // There are mods, so the MonoType will be of nonstandard size.
1732 int size;
1733
1734 size = MONO_SIZEOF_TYPE + ((gint32)count) * sizeof (MonoCustomMod);
1735 type = transient ? (MonoType *)g_malloc0 (size) : (MonoType *)mono_image_alloc0 (m, size);
1736 type->num_mods = count;
1737 if (count > 64) {
1738 mono_error_set_bad_image (error, m, "Invalid type with more than 64 modifiers");
1739 return NULL;
1740 }
1741 } else { // The type is of standard size, so we can allocate it on the stack.
1742 type = &stype;
1743 memset (type, 0, MONO_SIZEOF_TYPE);
1744 }
1745
1746 /* Iterate again, but now parse pinned, byref and custom modifiers */
1747 found = TRUE;
1748 count = 0;
1749 while (found) {
1750 switch (*ptr) {
1751 case MONO_TYPE_PINNED:
1752 pinned = TRUE;
1753 ++ptr;
1754 break;
1755 case MONO_TYPE_BYREF:
1756 byref = TRUE;
1757 ++ptr;
1758 break;
1759 case MONO_TYPE_CMOD_REQD:
1760 case MONO_TYPE_CMOD_OPT:
1761 mono_metadata_parse_custom_mod (m, &(type->modifiers [count]), ptr, &ptr);
1762 count ++;
1763 break;
1764 default:
1765 found = FALSE;
1766 }
1767 }
1768
1769 type->attrs = opt_attrs;
1770 type->byref = byref;
1771 type->pinned = pinned ? 1 : 0;
1772
1773 if (!do_mono_metadata_parse_type (type, m, container, transient, ptr, &ptr, error))
1774 return NULL;
1775
1776 if (rptr)
1777 *rptr = ptr;
1778
1779 // Possibly we can return an already-allocated type instead of the one we decoded
1780 if (!type->num_mods && !transient) {
1781 /* no need to free type here, because it is on the stack */
1782 if ((type->type == MONO_TYPE_CLASS || type->type == MONO_TYPE_VALUETYPE) && !type->pinned && !type->attrs) {
1783 MonoType *ret = type->byref ? &type->data.klass->this_arg : &type->data.klass->byval_arg;
1784
1785 /* Consider the case:
1786
1787 class Foo<T> { class Bar {} }
1788 class Test : Foo<Test>.Bar {}
1789
1790 When Foo<Test> is being expanded, 'Test' isn't yet initialized. It's actually in
1791 a really pristine state: it doesn't even know whether 'Test' is a reference or a value type.
1792
1793 We ensure that the MonoClass is in a state that we can canonicalize to:
1794
1795 klass->byval_arg.data.klass == klass
1796 klass->this_arg.data.klass == klass
1797
1798 If we can't canonicalize 'type', it doesn't matter, since later users of 'type' will do it.
1799
1800 LOCKING: even though we don't explicitly hold a lock, in the problematic case 'ret' is a field
1801 of a MonoClass which currently holds the loader lock. 'type' is local.
1802 */
1803 if (ret->data.klass == type->data.klass) {
1804 return ret;
1805 }
1806 }
1807 /* No need to use locking since nobody is modifying the hash table */
1808 if ((cached = (MonoType *)g_hash_table_lookup (type_cache, type))) {
1809 return cached;
1810 }
1811 }
1812
1813 /* printf ("%x %x %c %s\n", type->attrs, type->num_mods, type->pinned ? 'p' : ' ', mono_type_full_name (type)); */
1814
1815 if (type == &stype) { // Type was allocated on the stack, so we need to copy it to safety
1816 type = transient ? (MonoType *)g_malloc (MONO_SIZEOF_TYPE) : (MonoType *)mono_image_alloc (m, MONO_SIZEOF_TYPE);
1817 memcpy (type, &stype, MONO_SIZEOF_TYPE);
1818 }
1819 return type;
1820 }
1821
1822
1823 MonoType*
1824 mono_metadata_parse_type_checked (MonoImage *m, MonoGenericContainer *container,
1825 short opt_attrs, gboolean transient, const char *ptr, const char **rptr, MonoError *error)
1826 {
1827 return mono_metadata_parse_type_internal (m, container, opt_attrs, transient, ptr, rptr, error);
1828 }
1829
1830 /*
1831 * LOCKING: Acquires the loader lock.
1832 */
1833 MonoType*
1834 mono_metadata_parse_type (MonoImage *m, MonoParseTypeMode mode, short opt_attrs,
1835 const char *ptr, const char **rptr)
1836 {
1837 MonoError error;
1838 MonoType * type = mono_metadata_parse_type_internal (m, NULL, opt_attrs, FALSE, ptr, rptr, &error);
1839 mono_error_cleanup (&error);
1840 return type;
1841 }
1842
1843 gboolean
1844 mono_metadata_method_has_param_attrs (MonoImage *m, int def)
1845 {
1846 MonoTableInfo *paramt = &m->tables [MONO_TABLE_PARAM];
1847 MonoTableInfo *methodt = &m->tables [MONO_TABLE_METHOD];
1848 guint lastp, i, param_index = mono_metadata_decode_row_col (methodt, def - 1, MONO_METHOD_PARAMLIST);
1849
1850 if (def < methodt->rows)
1851 lastp = mono_metadata_decode_row_col (methodt, def, MONO_METHOD_PARAMLIST);
1852 else
1853 lastp = m->tables [MONO_TABLE_PARAM].rows + 1;
1854
1855 for (i = param_index; i < lastp; ++i) {
1856 guint32 flags = mono_metadata_decode_row_col (paramt, i - 1, MONO_PARAM_FLAGS);
1857 if (flags)
1858 return TRUE;
1859 }
1860
1861 return FALSE;
1862 }
1863
1864 /*
1865 * mono_metadata_get_param_attrs:
1866 *
1867 * @m The image to loader parameter attributes from
1868 * @def method def token (one based)
1869 * @param_count number of params to decode including the return value
1870 *
1871 * Return the parameter attributes for the method whose MethodDef index is DEF. The
1872 * returned memory needs to be freed by the caller. If all the param attributes are
1873 * 0, then NULL is returned.
1874 */
1875 int*
1876 mono_metadata_get_param_attrs (MonoImage *m, int def, int param_count)
1877 {
1878 MonoTableInfo *paramt = &m->tables [MONO_TABLE_PARAM];
1879 MonoTableInfo *methodt = &m->tables [MONO_TABLE_METHOD];
1880 guint32 cols [MONO_PARAM_SIZE];
1881 guint lastp, i, param_index = mono_metadata_decode_row_col (methodt, def - 1, MONO_METHOD_PARAMLIST);
1882 int *pattrs = NULL;
1883
1884 if (def < methodt->rows)
1885 lastp = mono_metadata_decode_row_col (methodt, def, MONO_METHOD_PARAMLIST);
1886 else
1887 lastp = paramt->rows + 1;
1888
1889 for (i = param_index; i < lastp; ++i) {
1890 mono_metadata_decode_row (paramt, i - 1, cols, MONO_PARAM_SIZE);
1891 if (cols [MONO_PARAM_FLAGS]) {
1892 if (!pattrs)
1893 pattrs = g_new0 (int, param_count);
1894 /* at runtime we just ignore this kind of malformed file:
1895 * the verifier can signal the error to the user
1896 */
1897 if (cols [MONO_PARAM_SEQUENCE] >= param_count)
1898 continue;
1899 pattrs [cols [MONO_PARAM_SEQUENCE]] = cols [MONO_PARAM_FLAGS];
1900 }
1901 }
1902
1903 return pattrs;
1904 }
1905
1906
1907 /*
1908 * mono_metadata_parse_signature:
1909 * @image: metadata context
1910 * @token: metadata token
1911 *
1912 * Decode a method signature stored in the STANDALONESIG table
1913 *
1914 * Returns: a MonoMethodSignature describing the signature.
1915 */
1916 MonoMethodSignature*
1917 mono_metadata_parse_signature (MonoImage *image, guint32 token)
1918 {
1919 MonoError error;
1920 MonoMethodSignature *ret;
1921 ret = mono_metadata_parse_signature_checked (image, token, &error);
1922 mono_error_cleanup (&error);
1923 return ret;
1924 }
1925
1926 /*
1927 * mono_metadata_parse_signature_checked:
1928 * @image: metadata context
1929 * @token: metadata token
1930 * @error: set on error
1931 *
1932 * Decode a method signature stored in the STANDALONESIG table
1933 *
1934 * Returns: a MonoMethodSignature describing the signature. On failure
1935 * returns NULL and sets @error.
1936 */
1937 MonoMethodSignature*
1938 mono_metadata_parse_signature_checked (MonoImage *image, guint32 token, MonoError *error)
1939 {
1940
1941 mono_error_init (error);
1942 MonoTableInfo *tables = image->tables;
1943 guint32 idx = mono_metadata_token_index (token);
1944 guint32 sig;
1945 const char *ptr;
1946
1947 if (image_is_dynamic (image)) {
1948 return (MonoMethodSignature *)mono_lookup_dynamic_token (image, token, NULL, error);
1949 }
1950
1951 g_assert (mono_metadata_token_table(token) == MONO_TABLE_STANDALONESIG);
1952
1953 sig = mono_metadata_decode_row_col (&tables [MONO_TABLE_STANDALONESIG], idx - 1, 0);
1954
1955 ptr = mono_metadata_blob_heap (image, sig);
1956 mono_metadata_decode_blob_size (ptr, &ptr);
1957
1958 return mono_metadata_parse_method_signature_full (image, NULL, 0, ptr, NULL, error);
1959 }
1960
1961 /*
1962 * mono_metadata_signature_alloc:
1963 * @image: metadata context
1964 * @nparmas: number of parameters in the signature
1965 *
1966 * Allocate a MonoMethodSignature structure with the specified number of params.
1967 * The return type and the params types need to be filled later.
1968 * This is a Mono runtime internal function.
1969 *
1970 * LOCKING: Assumes the loader lock is held.
1971 *
1972 * Returns: the new MonoMethodSignature structure.
1973 */
1974 MonoMethodSignature*
1975 mono_metadata_signature_alloc (MonoImage *m, guint32 nparams)
1976 {
1977 MonoMethodSignature *sig;
1978
1979 sig = (MonoMethodSignature *)mono_image_alloc0 (m, MONO_SIZEOF_METHOD_SIGNATURE + ((gint32)nparams) * sizeof (MonoType*));
1980 sig->param_count = nparams;
1981 sig->sentinelpos = -1;
1982
1983 return sig;
1984 }
1985
1986 static MonoMethodSignature*
1987 mono_metadata_signature_dup_internal_with_padding (MonoImage *image, MonoMemPool *mp, MonoMethodSignature *sig, size_t padding)
1988 {
1989 int sigsize, sig_header_size;
1990 MonoMethodSignature *ret;
1991 sigsize = sig_header_size = MONO_SIZEOF_METHOD_SIGNATURE + sig->param_count * sizeof (MonoType *) + padding;
1992 if (sig->ret)
1993 sigsize += MONO_SIZEOF_TYPE;
1994
1995 if (image) {
1996 ret = (MonoMethodSignature *)mono_image_alloc (image, sigsize);
1997 } else if (mp) {
1998 ret = (MonoMethodSignature *)mono_mempool_alloc (mp, sigsize);
1999 } else {
2000 ret = (MonoMethodSignature *)g_malloc (sigsize);
2001 }
2002
2003 memcpy (ret, sig, sig_header_size - padding);
2004
2005 // Copy return value because of ownership semantics.
2006 if (sig->ret) {
2007 // Danger! Do not alter padding use without changing the dup_add_this below
2008 intptr_t end_of_header = (intptr_t)( (char*)(ret) + sig_header_size);
2009 ret->ret = (MonoType *)end_of_header;
2010 memcpy (ret->ret, sig->ret, MONO_SIZEOF_TYPE);
2011 }
2012
2013 return ret;
2014 }
2015
2016 static MonoMethodSignature*
2017 mono_metadata_signature_dup_internal (MonoImage *image, MonoMemPool *mp, MonoMethodSignature *sig)
2018 {
2019 return mono_metadata_signature_dup_internal_with_padding (image, mp, sig, 0);
2020 }
2021 /*
2022 * signature_dup_add_this:
2023 *
2024 * Make a copy of @sig, adding an explicit this argument.
2025 */
2026 MonoMethodSignature*
2027 mono_metadata_signature_dup_add_this (MonoImage *image, MonoMethodSignature *sig, MonoClass *klass)
2028 {
2029 MonoMethodSignature *ret;
2030 ret = mono_metadata_signature_dup_internal_with_padding (image, NULL, sig, sizeof (MonoType *));
2031
2032 ret->param_count = sig->param_count + 1;
2033 ret->hasthis = FALSE;
2034
2035 for (int i = sig->param_count - 1; i >= 0; i --)
2036 ret->params [i + 1] = sig->params [i];
2037 ret->params [0] = klass->valuetype ? &klass->this_arg : &klass->byval_arg;
2038
2039 for (int i = sig->param_count - 1; i >= 0; i --)
2040 g_assert(ret->params [i + 1]->type == sig->params [i]->type && ret->params [i+1]->type != MONO_TYPE_END);
2041 g_assert (ret->ret->type == sig->ret->type && ret->ret->type != MONO_TYPE_END);
2042
2043 return ret;
2044 }
2045
2046
2047
2048 MonoMethodSignature*
2049 mono_metadata_signature_dup_full (MonoImage *image, MonoMethodSignature *sig)
2050 {
2051 MonoMethodSignature *ret = mono_metadata_signature_dup_internal (image, NULL, sig);
2052
2053 for (int i = 0 ; i < sig->param_count; i ++)
2054 g_assert(ret->params [i]->type == sig->params [i]->type);
2055 g_assert (ret->ret->type == sig->ret->type);
2056
2057 return ret;
2058 }
2059
2060 /*The mempool is accessed without synchronization*/
2061 MonoMethodSignature*
2062 mono_metadata_signature_dup_mempool (MonoMemPool *mp, MonoMethodSignature *sig)
2063 {
2064 return mono_metadata_signature_dup_internal (NULL, mp, sig);
2065 }
2066
2067 /*
2068 * mono_metadata_signature_dup:
2069 * @sig: method signature
2070 *
2071 * Duplicate an existing MonoMethodSignature so it can be modified.
2072 * This is a Mono runtime internal function.
2073 *
2074 * Returns: the new MonoMethodSignature structure.
2075 */
2076 MonoMethodSignature*
2077 mono_metadata_signature_dup (MonoMethodSignature *sig)
2078 {
2079 return mono_metadata_signature_dup_full (NULL, sig);
2080 }
2081
2082 /*
2083 * mono_metadata_signature_size:
2084 *
2085 * Return the amount of memory allocated to SIG.
2086 */
2087 guint32
2088 mono_metadata_signature_size (MonoMethodSignature *sig)
2089 {
2090 return MONO_SIZEOF_METHOD_SIGNATURE + sig->param_count * sizeof (MonoType *);
2091 }
2092
2093 /*
2094 * mono_metadata_parse_method_signature:
2095 * @m: metadata context
2096 * @generic_container: generics container
2097 * @def: the MethodDef index or 0 for Ref signatures.
2098 * @ptr: pointer to the signature metadata representation
2099 * @rptr: pointer updated to match the end of the decoded stream
2100 *
2101 * Decode a method signature stored at @ptr.
2102 * This is a Mono runtime internal function.
2103 *
2104 * LOCKING: Assumes the loader lock is held.
2105 *
2106 * Returns: a MonoMethodSignature describing the signature.
2107 */
2108 MonoMethodSignature *
2109 mono_metadata_parse_method_signature_full (MonoImage *m, MonoGenericContainer *container,
2110 int def, const char *ptr, const char **rptr, MonoError *error)
2111 {
2112 MonoMethodSignature *method;
2113 int i, *pattrs = NULL;
2114 guint32 hasthis = 0, explicit_this = 0, call_convention, param_count;
2115 guint32 gen_param_count = 0;
2116 gboolean is_open = FALSE;
2117
2118 mono_error_init (error);
2119
2120 if (*ptr & 0x10)
2121 gen_param_count = 1;
2122 if (*ptr & 0x20)
2123 hasthis = 1;
2124 if (*ptr & 0x40)
2125 explicit_this = 1;
2126 call_convention = *ptr & 0x0F;
2127 ptr++;
2128 if (gen_param_count)
2129 gen_param_count = mono_metadata_decode_value (ptr, &ptr);
2130 param_count = mono_metadata_decode_value (ptr, &ptr);
2131
2132 if (def)
2133 pattrs = mono_metadata_get_param_attrs (m, def, param_count + 1); /*Must be + 1 since signature's param count doesn't account for the return value */
2134
2135 method = mono_metadata_signature_alloc (m, param_count);
2136 method->hasthis = hasthis;
2137 method->explicit_this = explicit_this;
2138 method->call_convention = call_convention;
2139 method->generic_param_count = gen_param_count;
2140
2141 if (call_convention != 0xa) {
2142 method->ret = mono_metadata_parse_type_checked (m, container, pattrs ? pattrs [0] : 0, FALSE, ptr, &ptr, error);
2143 if (!method->ret) {
2144 mono_metadata_free_method_signature (method);
2145 g_free (pattrs);
2146 return NULL;
2147 }
2148 is_open = mono_class_is_open_constructed_type (method->ret);
2149 }
2150
2151 for (i = 0; i < method->param_count; ++i) {
2152 if (*ptr == MONO_TYPE_SENTINEL) {
2153 if (method->call_convention != MONO_CALL_VARARG || def) {
2154 mono_error_set_bad_image (error, m, "Found sentinel for methoddef or no vararg");
2155 g_free (pattrs);
2156 return NULL;
2157 }
2158 if (method->sentinelpos >= 0) {
2159 mono_error_set_bad_image (error, m, "Found sentinel twice in the same signature.");
2160 g_free (pattrs);
2161 return NULL;
2162 }
2163 method->sentinelpos = i;
2164 ptr++;
2165 }
2166 method->params [i] = mono_metadata_parse_type_checked (m, container, pattrs ? pattrs [i+1] : 0, FALSE, ptr, &ptr, error);
2167 if (!method->params [i]) {
2168 mono_metadata_free_method_signature (method);
2169 g_free (pattrs);
2170 return NULL;
2171 }
2172 if (!is_open)
2173 is_open = mono_class_is_open_constructed_type (method->params [i]);
2174 }
2175
2176 /* The sentinel could be missing if the caller does not pass any additional arguments */
2177 if (!def && method->call_convention == MONO_CALL_VARARG && method->sentinelpos < 0)
2178 method->sentinelpos = method->param_count;
2179
2180 method->has_type_parameters = is_open;
2181
2182 if (def && (method->call_convention == MONO_CALL_VARARG))
2183 method->sentinelpos = method->param_count;
2184
2185 g_free (pattrs);
2186
2187 if (rptr)
2188 *rptr = ptr;
2189 /*
2190 * Add signature to a cache and increase ref count...
2191 */
2192
2193 return method;
2194 }
2195
2196 /*
2197 * mono_metadata_parse_method_signature:
2198 * @m: metadata context
2199 * @def: the MethodDef index or 0 for Ref signatures.
2200 * @ptr: pointer to the signature metadata representation
2201 * @rptr: pointer updated to match the end of the decoded stream
2202 *
2203 * Decode a method signature stored at @ptr.
2204 * This is a Mono runtime internal function.
2205 *
2206 * LOCKING: Assumes the loader lock is held.
2207 *
2208 * Returns: a MonoMethodSignature describing the signature.
2209 */
2210 MonoMethodSignature *
2211 mono_metadata_parse_method_signature (MonoImage *m, int def, const char *ptr, const char **rptr)
2212 {
2213 /*
2214 * This function MUST NOT be called by runtime code as it does error handling incorrectly.
2215 * Use mono_metadata_parse_method_signature_full instead.
2216 * It's ok to asser on failure as we no longer use it.
2217 */
2218 MonoError error;
2219 MonoMethodSignature *ret;
2220 ret = mono_metadata_parse_method_signature_full (m, NULL, def, ptr, rptr, &error);
2221 g_assert (mono_error_ok (&error));
2222
2223 return ret;
2224 }
2225
2226 /*
2227 * mono_metadata_free_method_signature:
2228 * @sig: signature to destroy
2229 *
2230 * Free the memory allocated in the signature @sig.
2231 * This method needs to be robust and work also on partially-built
2232 * signatures, so it does extra checks.
2233 */
2234 void
2235 mono_metadata_free_method_signature (MonoMethodSignature *sig)
2236 {
2237 /* Everything is allocated from mempools */
2238 /*
2239 int i;
2240 if (sig->ret)
2241 mono_metadata_free_type (sig->ret);
2242 for (i = 0; i < sig->param_count; ++i) {
2243 if (sig->params [i])
2244 mono_metadata_free_type (sig->params [i]);
2245 }
2246 */
2247 }
2248
2249 void
2250 mono_metadata_free_inflated_signature (MonoMethodSignature *sig)
2251 {
2252 int i;
2253
2254 /* Allocated in inflate_generic_signature () */
2255 if (sig->ret)
2256 mono_metadata_free_type (sig->ret);
2257 for (i = 0; i < sig->param_count; ++i) {
2258 if (sig->params [i])
2259 mono_metadata_free_type (sig->params [i]);
2260 }
2261 g_free (sig);
2262 }
2263
2264 static gboolean
2265 inflated_method_equal (gconstpointer a, gconstpointer b)
2266 {
2267 const MonoMethodInflated *ma = (const MonoMethodInflated *)a;
2268 const MonoMethodInflated *mb = (const MonoMethodInflated *)b;
2269 if (ma->declaring != mb->declaring)
2270 return FALSE;
2271 return mono_metadata_generic_context_equal (&ma->context, &mb->context);
2272 }
2273
2274 static guint
2275 inflated_method_hash (gconstpointer a)
2276 {
2277 const MonoMethodInflated *ma = (const MonoMethodInflated *)a;
2278 return (mono_metadata_generic_context_hash (&ma->context) ^ mono_aligned_addr_hash (ma->declaring));
2279 }
2280
2281 static gboolean
2282 inflated_signature_equal (gconstpointer a, gconstpointer b)
2283 {
2284 const MonoInflatedMethodSignature *sig1 = (const MonoInflatedMethodSignature *)a;
2285 const MonoInflatedMethodSignature *sig2 = (const MonoInflatedMethodSignature *)b;
2286
2287 /* sig->sig is assumed to be canonized */
2288 if (sig1->sig != sig2->sig)
2289 return FALSE;
2290 /* The generic instances are canonized */
2291 return mono_metadata_generic_context_equal (&sig1->context, &sig2->context);
2292 }
2293
2294 static guint
2295 inflated_signature_hash (gconstpointer a)
2296 {
2297 const MonoInflatedMethodSignature *sig = (const MonoInflatedMethodSignature *)a;
2298
2299 /* sig->sig is assumed to be canonized */
2300 return mono_metadata_generic_context_hash (&sig->context) ^ mono_aligned_addr_hash (sig->sig);
2301 }
2302
2303 /*static void
2304 dump_ginst (MonoGenericInst *ginst)
2305 {
2306 int i;
2307 char *name;
2308
2309 g_print ("Ginst: <");
2310 for (i = 0; i < ginst->type_argc; ++i) {
2311 if (i != 0)
2312 g_print (", ");
2313 name = mono_type_get_name (ginst->type_argv [i]);
2314 g_print ("%s", name);
2315 g_free (name);
2316 }
2317 g_print (">");
2318 }*/
2319
2320 static gboolean type_in_image (MonoType *type, MonoImage *image);
2321
2322 static gboolean
2323 signature_in_image (MonoMethodSignature *sig, MonoImage *image)
2324 {
2325 gpointer iter = NULL;
2326 MonoType *p;
2327
2328 while ((p = mono_signature_get_params (sig, &iter)) != NULL)
2329 if (type_in_image (p, image))
2330 return TRUE;
2331
2332 return type_in_image (mono_signature_get_return_type (sig), image);
2333 }
2334
2335 static gboolean
2336 ginst_in_image (MonoGenericInst *ginst, MonoImage *image)
2337 {
2338 int i;
2339
2340 for (i = 0; i < ginst->type_argc; ++i) {
2341 if (type_in_image (ginst->type_argv [i], image))
2342 return TRUE;
2343 }
2344
2345 return FALSE;
2346 }
2347
2348 static gboolean
2349 gclass_in_image (MonoGenericClass *gclass, MonoImage *image)
2350 {
2351 return gclass->container_class->image == image ||
2352 ginst_in_image (gclass->context.class_inst, image);
2353 }
2354
2355 static gboolean
2356 type_in_image (MonoType *type, MonoImage *image)
2357 {
2358 retry:
2359 switch (type->type) {
2360 case MONO_TYPE_GENERICINST:
2361 return gclass_in_image (type->data.generic_class, image);
2362 case MONO_TYPE_PTR:
2363 type = type->data.type;
2364 goto retry;
2365 case MONO_TYPE_SZARRAY:
2366 type = &type->data.klass->byval_arg;
2367 goto retry;
2368 case MONO_TYPE_ARRAY:
2369 type = &type->data.array->eklass->byval_arg;
2370 goto retry;
2371 case MONO_TYPE_FNPTR:
2372 return signature_in_image (type->data.method, image);
2373 case MONO_TYPE_VAR:
2374 case MONO_TYPE_MVAR:
2375 return image == get_image_for_generic_param (type->data.generic_param);
2376 default:
2377 /* At this point, we should've avoided all potential allocations in mono_class_from_mono_type () */
2378 return image == mono_class_from_mono_type (type)->image;
2379 }
2380 }
2381
2382 static inline void
2383 image_sets_lock (void)
2384 {
2385 mono_os_mutex_lock (&image_sets_mutex);
2386 }
2387
2388 static inline void
2389 image_sets_unlock (void)
2390 {
2391 mono_os_mutex_unlock (&image_sets_mutex);
2392 }
2393
2394 /*
2395 * get_image_set:
2396 *
2397 * Return a MonoImageSet representing the set of images in IMAGES.
2398 */
2399 static MonoImageSet*
2400 get_image_set (MonoImage **images, int nimages)
2401 {
2402 int i, j, k;
2403 MonoImageSet *set;
2404 GSList *l;
2405
2406 /* Common case: Image set contains corlib only. If we've seen that case before, we cached the set. */
2407 if (nimages == 1 && images [0] == mono_defaults.corlib && mscorlib_image_set)
2408 return mscorlib_image_set;
2409
2410 /* Happens with empty generic instances */
2411 // FIXME: Is corlib the correct thing to return here? If so, why? This may be an artifact of generic instances previously defaulting to allocating from corlib.
2412 if (nimages == 0)
2413 return mscorlib_image_set;
2414
2415 image_sets_lock ();
2416
2417 if (!image_sets)
2418 image_sets = g_ptr_array_new ();
2419
2420 // Before we go on, we should check to see whether a MonoImageSet with these images already exists.
2421 // We can search the referred-by imagesets of any one of our images to do this. Arbitrarily pick one here:
2422 if (images [0] == mono_defaults.corlib && nimages > 1)
2423 l = images [1]->image_sets; // Prefer not to search the imagesets of corlib-- that will be a long list.
2424 else
2425 l = images [0]->image_sets;
2426
2427 set = NULL;
2428 while (l) // Iterate over selected list, looking for an imageset with members equal to our target one
2429 {
2430 set = (MonoImageSet *)l->data;
2431
2432 if (set->nimages == nimages) { // Member count differs, this can't be it
2433 // Compare all members to all members-- order might be different
2434 for (j = 0; j < nimages; ++j) {
2435 for (k = 0; k < nimages; ++k)
2436 if (set->images [k] == images [j])
2437 break; // Break on match
2438
2439 // If we iterated all the way through set->images, images[j] was *not* found.
2440 if (k == nimages)
2441 break; // Break on "image not found"
2442 }
2443
2444 // If we iterated all the way through images without breaking, all items in images were found in set->images
2445 if (j == nimages)
2446 break; // Break on "found a set with equal members"
2447 }
2448
2449 l = l->next;
2450 }
2451
2452 // If we iterated all the way through l without breaking, the imageset does not already exist and we shuold create it
2453 if (!l) {
2454 set = g_new0 (MonoImageSet, 1);
2455 set->nimages = nimages;
2456 set->images = g_new0 (MonoImage*, nimages);
2457 mono_os_mutex_init_recursive (&set->lock);
2458 for (i = 0; i < nimages; ++i)
2459 set->images [i] = images [i];
2460 set->gclass_cache = g_hash_table_new_full (mono_generic_class_hash, mono_generic_class_equal, NULL, (GDestroyNotify)free_generic_class);
2461 set->ginst_cache = g_hash_table_new_full (mono_metadata_generic_inst_hash, mono_metadata_generic_inst_equal, NULL, (GDestroyNotify)free_generic_inst);
2462 set->gmethod_cache = g_hash_table_new_full (inflated_method_hash, inflated_method_equal, NULL, (GDestroyNotify)free_inflated_method);
2463 set->gsignature_cache = g_hash_table_new_full (inflated_signature_hash, inflated_signature_equal, NULL, (GDestroyNotify)free_inflated_signature);
2464
2465 for (i = 0; i < nimages; ++i)
2466 set->images [i]->image_sets = g_slist_prepend (set->images [i]->image_sets, set);
2467
2468 g_ptr_array_add (image_sets, set);
2469 }
2470
2471 if (nimages == 1 && images [0] == mono_defaults.corlib) {
2472 mono_memory_barrier ();
2473 mscorlib_image_set = set;
2474 }
2475
2476 image_sets_unlock ();
2477
2478 return set;
2479 }
2480
2481 static void
2482 delete_image_set (MonoImageSet *set)
2483 {
2484 int i;
2485
2486 g_hash_table_destroy (set->gclass_cache);
2487 g_hash_table_destroy (set->ginst_cache);
2488 g_hash_table_destroy (set->gmethod_cache);
2489 g_hash_table_destroy (set->gsignature_cache);
2490
2491 mono_wrapper_caches_free (&set->wrapper_caches);
2492
2493 image_sets_lock ();
2494
2495 for (i = 0; i < set->nimages; ++i)
2496 set->images [i]->image_sets = g_slist_remove (set->images [i]->image_sets, set);
2497
2498 g_ptr_array_remove (image_sets, set);
2499
2500 image_sets_unlock ();
2501
2502 if (set->mempool)
2503 mono_mempool_destroy (set->mempool);
2504 g_free (set->images);
2505 mono_os_mutex_destroy (&set->lock);
2506 g_free (set);
2507 }
2508
2509 void
2510 mono_image_set_lock (MonoImageSet *set)
2511 {
2512 mono_os_mutex_lock (&set->lock);
2513 }
2514
2515 void
2516 mono_image_set_unlock (MonoImageSet *set)
2517 {
2518 mono_os_mutex_unlock (&set->lock);
2519 }
2520
2521 gpointer
2522 mono_image_set_alloc (MonoImageSet *set, guint size)
2523 {
2524 gpointer res;
2525
2526 mono_image_set_lock (set);
2527 if (!set->mempool)
2528 set->mempool = mono_mempool_new_size (INITIAL_IMAGE_SET_SIZE);
2529 res = mono_mempool_alloc (set->mempool, size);
2530 mono_image_set_unlock (set);
2531
2532 return res;
2533 }
2534
2535 gpointer
2536 mono_image_set_alloc0 (MonoImageSet *set, guint size)
2537 {
2538 gpointer res;
2539
2540 mono_image_set_lock (set);
2541 if (!set->mempool)
2542 set->mempool = mono_mempool_new_size (INITIAL_IMAGE_SET_SIZE);
2543 res = mono_mempool_alloc0 (set->mempool, size);
2544 mono_image_set_unlock (set);
2545
2546 return res;
2547 }
2548
2549 char*
2550 mono_image_set_strdup (MonoImageSet *set, const char *s)
2551 {
2552 char *res;
2553
2554 mono_image_set_lock (set);
2555 if (!set->mempool)
2556 set->mempool = mono_mempool_new_size (INITIAL_IMAGE_SET_SIZE);
2557 res = mono_mempool_strdup (set->mempool, s);
2558 mono_image_set_unlock (set);
2559
2560 return res;
2561 }
2562
2563 // Get a descriptive string for a MonoImageSet
2564 // Callers are obligated to free buffer with g_free after use
2565 char *
2566 mono_image_set_description (MonoImageSet *set)
2567 {
2568 GString *result = g_string_new (NULL);
2569 int img;
2570 g_string_append (result, "[");
2571 for (img = 0; img < set->nimages; img++)
2572 {
2573 if (img > 0)
2574 g_string_append (result, ", ");
2575 g_string_append (result, set->images[img]->name);
2576 }
2577 g_string_append (result, "]");
2578 return g_string_free (result, FALSE);
2579 }
2580
2581 /*
2582 * Structure used by the collect_..._images functions to store the image list.
2583 */
2584 typedef struct {
2585 MonoImage *image_buf [64];
2586 MonoImage **images;
2587 int nimages, images_len;
2588 } CollectData;
2589
2590 static void
2591 collect_data_init (CollectData *data)
2592 {
2593 data->images = data->image_buf;
2594 data->images_len = 64;
2595 data->nimages = 0;
2596 }
2597
2598 static void
2599 collect_data_free (CollectData *data)
2600 {
2601 if (data->images != data->image_buf)
2602 g_free (data->images);
2603 }
2604
2605 static void
2606 enlarge_data (CollectData *data)
2607 {
2608 int new_len = data->images_len < 16 ? 16 : data->images_len * 2;
2609 MonoImage **d = g_new (MonoImage *, new_len);
2610
2611 // FIXME: test this
2612 g_assert_not_reached ();
2613 memcpy (d, data->images, data->images_len);
2614 if (data->images != data->image_buf)
2615 g_free (data->images);
2616 data->images = d;
2617 data->images_len = new_len;
2618 }
2619
2620 static inline void
2621 add_image (MonoImage *image, CollectData *data)
2622 {
2623 int i;
2624
2625 /* The arrays are small, so use a linear search instead of a hash table */
2626 for (i = 0; i < data->nimages; ++i)
2627 if (data->images [i] == image)
2628 return;
2629
2630 if (data->nimages == data->images_len)
2631 enlarge_data (data);
2632
2633 data->images [data->nimages ++] = image;
2634 }
2635
2636 static void
2637 collect_type_images (MonoType *type, CollectData *data);
2638
2639 static void
2640 collect_ginst_images (MonoGenericInst *ginst, CollectData *data)
2641 {
2642 int i;
2643
2644 for (i = 0; i < ginst->type_argc; ++i) {
2645 collect_type_images (ginst->type_argv [i], data);
2646 }
2647 }
2648
2649 static void
2650 collect_gclass_images (MonoGenericClass *gclass, CollectData *data)
2651 {
2652 add_image (gclass->container_class->image, data);
2653 if (gclass->context.class_inst)
2654 collect_ginst_images (gclass->context.class_inst, data);
2655 }
2656
2657 static void
2658 collect_signature_images (MonoMethodSignature *sig, CollectData *data)
2659 {
2660 gpointer iter = NULL;
2661 MonoType *p;
2662
2663 collect_type_images (mono_signature_get_return_type (sig), data);
2664 while ((p = mono_signature_get_params (sig, &iter)) != NULL)
2665 collect_type_images (p, data);
2666 }
2667
2668 static void
2669 collect_inflated_signature_images (MonoInflatedMethodSignature *sig, CollectData *data)
2670 {
2671 collect_signature_images (sig->sig, data);
2672 if (sig->context.class_inst)
2673 collect_ginst_images (sig->context.class_inst, data);
2674 if (sig->context.method_inst)
2675 collect_ginst_images (sig->context.method_inst, data);
2676 }
2677
2678 static void
2679 collect_method_images (MonoMethodInflated *method, CollectData *data)
2680 {
2681 MonoMethod *m = method->declaring;
2682
2683 add_image (method->declaring->klass->image, data);
2684 if (method->context.class_inst)
2685 collect_ginst_images (method->context.class_inst, data);
2686 if (method->context.method_inst)
2687 collect_ginst_images (method->context.method_inst, data);
2688 /*
2689 * Dynamic assemblies have no references, so the images they depend on can be unloaded before them.
2690 */
2691 if (image_is_dynamic (m->klass->image))
2692 collect_signature_images (mono_method_signature (m), data);
2693 }
2694
2695 static void
2696 collect_type_images (MonoType *type, CollectData *data)
2697 {
2698 retry:
2699 switch (type->type) {
2700 case MONO_TYPE_GENERICINST:
2701 collect_gclass_images (type->data.generic_class, data);
2702 break;
2703 case MONO_TYPE_PTR:
2704 type = type->data.type;
2705 goto retry;
2706 case MONO_TYPE_SZARRAY:
2707 type = &type->data.klass->byval_arg;
2708 goto retry;
2709 case MONO_TYPE_ARRAY:
2710 type = &type->data.array->eklass->byval_arg;
2711 goto retry;
2712 case MONO_TYPE_FNPTR:
2713 //return signature_in_image (type->data.method, image);
2714 g_assert_not_reached ();
2715 case MONO_TYPE_VAR:
2716 case MONO_TYPE_MVAR:
2717 {
2718 MonoImage *image = get_image_for_generic_param (type->data.generic_param);
2719 add_image (image, data);
2720 break;
2721 }
2722 case MONO_TYPE_CLASS:
2723 case MONO_TYPE_VALUETYPE:
2724 add_image (mono_class_from_mono_type (type)->image, data);
2725 break;
2726 default:
2727 add_image (mono_defaults.corlib, data);
2728 }
2729 }
2730
2731 typedef struct {
2732 MonoImage *image;
2733 GSList *list;
2734 } CleanForImageUserData;
2735
2736 static gboolean
2737 steal_gclass_in_image (gpointer key, gpointer value, gpointer data)
2738 {
2739 MonoGenericClass *gclass = (MonoGenericClass *)key;
2740 CleanForImageUserData *user_data = (CleanForImageUserData *)data;
2741
2742 g_assert (gclass_in_image (gclass, user_data->image));
2743
2744 user_data->list = g_slist_prepend (user_data->list, gclass);
2745 return TRUE;
2746 }
2747
2748 static gboolean
2749 steal_ginst_in_image (gpointer key, gpointer value, gpointer data)
2750 {
2751 MonoGenericInst *ginst = (MonoGenericInst *)key;
2752 CleanForImageUserData *user_data = (CleanForImageUserData *)data;
2753
2754 // This doesn't work during corlib compilation
2755 //g_assert (ginst_in_image (ginst, user_data->image));
2756
2757 user_data->list = g_slist_prepend (user_data->list, ginst);
2758 return TRUE;
2759 }
2760
2761 static gboolean
2762 inflated_method_in_image (gpointer key, gpointer value, gpointer data)
2763 {
2764 MonoImage *image = (MonoImage *)data;
2765 MonoMethodInflated *method = (MonoMethodInflated *)key;
2766
2767 // FIXME:
2768 // https://bugzilla.novell.com/show_bug.cgi?id=458168
2769 g_assert (method->declaring->klass->image == image ||
2770 (method->context.class_inst && ginst_in_image (method->context.class_inst, image)) ||
2771 (method->context.method_inst && ginst_in_image (method->context.method_inst, image)) || (((MonoMethod*)method)->signature && signature_in_image (mono_method_signature ((MonoMethod*)method), image)));
2772
2773 return TRUE;
2774 }
2775
2776 static gboolean
2777 inflated_signature_in_image (gpointer key, gpointer value, gpointer data)
2778 {
2779 MonoImage *image = (MonoImage *)data;
2780 MonoInflatedMethodSignature *sig = (MonoInflatedMethodSignature *)key;
2781
2782 return signature_in_image (sig->sig, image) ||
2783 (sig->context.class_inst && ginst_in_image (sig->context.class_inst, image)) ||
2784 (sig->context.method_inst && ginst_in_image (sig->context.method_inst, image));
2785 }
2786
2787 static void
2788 check_gmethod (gpointer key, gpointer value, gpointer data)
2789 {
2790 MonoMethodInflated *method = (MonoMethodInflated *)key;
2791 MonoImage *image = (MonoImage *)data;
2792
2793 if (method->context.class_inst)
2794 g_assert (!ginst_in_image (method->context.class_inst, image));
2795 if (method->context.method_inst)
2796 g_assert (!ginst_in_image (method->context.method_inst, image));
2797 if (((MonoMethod*)method)->signature)
2798 g_assert (!signature_in_image (mono_method_signature ((MonoMethod*)method), image));
2799 }
2800
2801 /*
2802 * check_image_sets:
2803 *
2804 * Run a consistency check on the image set data structures.
2805 */
2806 static G_GNUC_UNUSED void
2807 check_image_sets (MonoImage *image)
2808 {
2809 int i;
2810 GSList *l = image->image_sets;
2811
2812 if (!image_sets)
2813 return;
2814
2815 for (i = 0; i < image_sets->len; ++i) {
2816 MonoImageSet *set = (MonoImageSet *)g_ptr_array_index (image_sets, i);
2817
2818 if (!g_slist_find (l, set)) {
2819 g_hash_table_foreach (set->gmethod_cache, check_gmethod, image);
2820 }
2821 }
2822 }
2823
2824 void
2825 mono_metadata_clean_for_image (MonoImage *image)
2826 {
2827 CleanForImageUserData ginst_data, gclass_data;
2828 GSList *l, *set_list;
2829
2830 //check_image_sets (image);
2831
2832 /*
2833 * The data structures could reference each other so we delete them in two phases.
2834 * This is required because of the hashing functions in gclass/ginst_cache.
2835 */
2836 ginst_data.image = gclass_data.image = image;
2837 ginst_data.list = gclass_data.list = NULL;
2838
2839 /* Collect the items to delete */
2840 /* delete_image_set () modifies the lists so make a copy */
2841 for (l = image->image_sets; l; l = l->next) {
2842 MonoImageSet *set = (MonoImageSet *)l->data;
2843
2844 mono_image_set_lock (set);
2845 g_hash_table_foreach_steal (set->gclass_cache, steal_gclass_in_image, &gclass_data);
2846 g_hash_table_foreach_steal (set->ginst_cache, steal_ginst_in_image, &ginst_data);
2847 g_hash_table_foreach_remove (set->gmethod_cache, inflated_method_in_image, image);
2848 g_hash_table_foreach_remove (set->gsignature_cache, inflated_signature_in_image, image);
2849 mono_image_set_unlock (set);
2850 }
2851
2852 /* Delete the removed items */
2853 for (l = ginst_data.list; l; l = l->next)
2854 free_generic_inst ((MonoGenericInst *)l->data);
2855 for (l = gclass_data.list; l; l = l->next)
2856 free_generic_class ((MonoGenericClass *)l->data);
2857 g_slist_free (ginst_data.list);
2858 g_slist_free (gclass_data.list);
2859 /* delete_image_set () modifies the lists so make a copy */
2860 set_list = g_slist_copy (image->image_sets);
2861 for (l = set_list; l; l = l->next) {
2862 MonoImageSet *set = (MonoImageSet *)l->data;
2863
2864 delete_image_set (set);
2865 }
2866 g_slist_free (set_list);
2867 }
2868
2869 static void
2870 free_inflated_method (MonoMethodInflated *imethod)
2871 {
2872 MonoMethod *method = (MonoMethod*)imethod;
2873
2874 if (method->signature)
2875 mono_metadata_free_inflated_signature (method->signature);
2876
2877 if (method->wrapper_type)
2878 g_free (((MonoMethodWrapper*)method)->method_data);
2879
2880 g_free (method);
2881 }
2882
2883 static void
2884 free_generic_inst (MonoGenericInst *ginst)
2885 {
2886 int i;
2887
2888 /* The ginst itself is allocated from the image set mempool */
2889 for (i = 0; i < ginst->type_argc; ++i)
2890 mono_metadata_free_type (ginst->type_argv [i]);
2891 }
2892
2893 static void
2894 free_generic_class (MonoGenericClass *gclass)
2895 {
2896 /* The gclass itself is allocated from the image set mempool */
2897 if (gclass->cached_class && gclass->cached_class->interface_id)
2898 mono_unload_interface_id (gclass->cached_class);
2899 }
2900
2901 static void
2902 free_inflated_signature (MonoInflatedMethodSignature *sig)
2903 {
2904 mono_metadata_free_inflated_signature (sig->sig);
2905 g_free (sig);
2906 }
2907
2908 /*
2909 * mono_metadata_get_inflated_signature:
2910 *
2911 * Given an inflated signature and a generic context, return a canonical copy of the
2912 * signature. The returned signature might be equal to SIG or it might be a cached copy.
2913 */
2914 MonoMethodSignature *
2915 mono_metadata_get_inflated_signature (MonoMethodSignature *sig, MonoGenericContext *context)
2916 {
2917 MonoInflatedMethodSignature helper;
2918 MonoInflatedMethodSignature *res;
2919 CollectData data;
2920 MonoImageSet *set;
2921
2922 helper.sig = sig;
2923 helper.context.class_inst = context->class_inst;
2924 helper.context.method_inst = context->method_inst;
2925
2926 collect_data_init (&data);
2927
2928 collect_inflated_signature_images (&helper, &data);
2929
2930 set = get_image_set (data.images, data.nimages);
2931
2932 collect_data_free (&data);
2933
2934 mono_image_set_lock (set);
2935
2936 res = (MonoInflatedMethodSignature *)g_hash_table_lookup (set->gsignature_cache, &helper);
2937 if (!res) {
2938 res = g_new0 (MonoInflatedMethodSignature, 1);
2939 res->sig = sig;
2940 res->context.class_inst = context->class_inst;
2941 res->context.method_inst = context->method_inst;
2942 g_hash_table_insert (set->gsignature_cache, res, res);
2943 }
2944
2945 mono_image_set_unlock (set);
2946
2947 return res->sig;
2948 }
2949
2950 MonoImageSet *
2951 mono_metadata_get_image_set_for_method (MonoMethodInflated *method)
2952 {
2953 MonoImageSet *set;
2954 CollectData image_set_data;
2955
2956 collect_data_init (&image_set_data);
2957 collect_method_images (method, &image_set_data);
2958 set = get_image_set (image_set_data.images, image_set_data.nimages);
2959 collect_data_free (&image_set_data);
2960
2961 return set;
2962 }
2963
2964 /*
2965 * mono_metadata_get_generic_inst:
2966 *
2967 * Given a list of types, return a MonoGenericInst that represents that list.
2968 * The returned MonoGenericInst has its own copy of the list of types. The list
2969 * passed in the argument can be freed, modified or disposed of.
2970 *
2971 */
2972 MonoGenericInst *
2973 mono_metadata_get_generic_inst (int type_argc, MonoType **type_argv)
2974 {
2975 MonoGenericInst *ginst;
2976 gboolean is_open;
2977 int i;
2978 int size = MONO_SIZEOF_GENERIC_INST + type_argc * sizeof (MonoType *);
2979
2980 for (i = 0; i < type_argc; ++i)
2981 if (mono_class_is_open_constructed_type (type_argv [i]))
2982 break;
2983 is_open = (i < type_argc);
2984
2985 ginst = (MonoGenericInst *)g_alloca (size);
2986 memset (ginst, 0, sizeof (MonoGenericInst));
2987 ginst->is_open = is_open;
2988 ginst->type_argc = type_argc;
2989 memcpy (ginst->type_argv, type_argv, type_argc * sizeof (MonoType *));
2990
2991 return mono_metadata_get_canonical_generic_inst (ginst);
2992 }
2993
2994
2995 /**
2996 * mono_metadata_get_canonical_generic_inst:
2997 * @candidate: an arbitrary generic instantiation
2998 *
2999 * Returns the canonical generic instantiation that represents the given
3000 * candidate by identifying the image set for the candidate instantiation and
3001 * finding the instance in the image set or adding a copy of the given instance
3002 * to the image set.
3003 *
3004 * The returned MonoGenericInst has its own copy of the list of types. The list
3005 * passed in the argument can be freed, modified or disposed of.
3006 *
3007 */
3008 MonoGenericInst *
3009 mono_metadata_get_canonical_generic_inst (MonoGenericInst *candidate)
3010 {
3011 CollectData data;
3012 int type_argc = candidate->type_argc;
3013 gboolean is_open = candidate->is_open;
3014 MonoImageSet *set;
3015
3016 collect_data_init (&data);
3017
3018 collect_ginst_images (candidate, &data);
3019
3020 set = get_image_set (data.images, data.nimages);
3021
3022 collect_data_free (&data);
3023
3024 mono_image_set_lock (set);
3025
3026 MonoGenericInst *ginst = (MonoGenericInst *)g_hash_table_lookup (set->ginst_cache, candidate);
3027 if (!ginst) {
3028 int size = MONO_SIZEOF_GENERIC_INST + type_argc * sizeof (MonoType *);
3029 ginst = (MonoGenericInst *)mono_image_set_alloc0 (set, size);
3030 #ifndef MONO_SMALL_CONFIG
3031 ginst->id = ++next_generic_inst_id;
3032 #endif
3033 ginst->is_open = is_open;
3034 ginst->type_argc = type_argc;
3035
3036 for (int i = 0; i < type_argc; ++i)
3037 ginst->type_argv [i] = mono_metadata_type_dup (NULL, candidate->type_argv [i]);
3038
3039 g_hash_table_insert (set->ginst_cache, ginst, ginst);
3040 }
3041
3042 mono_image_set_unlock (set);
3043 return ginst;
3044 }
3045
3046 static gboolean
3047 mono_metadata_is_type_builder_generic_type_definition (MonoClass *container_class, MonoGenericInst *inst, gboolean is_dynamic)
3048 {
3049 MonoGenericContainer *container = mono_class_get_generic_container (container_class);
3050
3051 if (!is_dynamic || container_class->wastypebuilder || container->type_argc != inst->type_argc)
3052 return FALSE;
3053 return inst == container->context.class_inst;
3054 }
3055
3056 /*
3057 * mono_metadata_lookup_generic_class:
3058 *
3059 * Returns a MonoGenericClass with the given properties.
3060 *
3061 */
3062 MonoGenericClass *
3063 mono_metadata_lookup_generic_class (MonoClass *container_class, MonoGenericInst *inst, gboolean is_dynamic)
3064 {
3065 MonoGenericClass *gclass;
3066 MonoGenericClass helper;
3067 gboolean is_tb_open = mono_metadata_is_type_builder_generic_type_definition (container_class, inst, is_dynamic);
3068 MonoImageSet *set;
3069 CollectData data;
3070
3071 g_assert (mono_class_get_generic_container (container_class)->type_argc == inst->type_argc);
3072
3073 memset (&helper, 0, sizeof(helper)); // act like g_new0
3074 helper.container_class = container_class;
3075 helper.context.class_inst = inst;
3076 helper.is_dynamic = is_dynamic; /* We use this in a hash lookup, which does not attempt to downcast the pointer */
3077 helper.is_tb_open = is_tb_open;
3078
3079 collect_data_init (&data);
3080
3081 collect_gclass_images (&helper, &data);
3082
3083 set = get_image_set (data.images, data.nimages);
3084
3085 collect_data_free (&data);
3086
3087 mono_image_set_lock (set);
3088
3089 gclass = (MonoGenericClass *)g_hash_table_lookup (set->gclass_cache, &helper);
3090
3091 /* A tripwire just to keep us honest */
3092 g_assert (!helper.cached_class);
3093
3094 if (gclass) {
3095 mono_image_set_unlock (set);
3096 return gclass;
3097 }
3098
3099 gclass = mono_image_set_new0 (set, MonoGenericClass, 1);
3100 if (is_dynamic)
3101 gclass->is_dynamic = 1;
3102
3103 gclass->is_tb_open = is_tb_open;
3104 gclass->container_class = container_class;
3105 gclass->context.class_inst = inst;
3106 gclass->context.method_inst = NULL;
3107 gclass->owner = set;
3108 if (inst == mono_class_get_generic_container (container_class)->context.class_inst && !is_tb_open)
3109 gclass->cached_class = container_class;
3110
3111 g_hash_table_insert (set->gclass_cache, gclass, gclass);
3112
3113 mono_image_set_unlock (set);
3114
3115 return gclass;
3116 }
3117
3118 /*
3119 * mono_metadata_inflate_generic_inst:
3120 *
3121 * Instantiate the generic instance @ginst with the context @context.
3122 * Check @error for success.
3123 *
3124 */
3125 MonoGenericInst *
3126 mono_metadata_inflate_generic_inst (MonoGenericInst *ginst, MonoGenericContext *context, MonoError *error)
3127 {
3128 MonoType **type_argv;
3129 MonoGenericInst *nginst = NULL;
3130 int i, count = 0;
3131
3132 mono_error_init (error);
3133
3134 if (!ginst->is_open)
3135 return ginst;
3136
3137 type_argv = g_new0 (MonoType*, ginst->type_argc);
3138
3139 for (i = 0; i < ginst->type_argc; i++) {
3140 type_argv [i] = mono_class_inflate_generic_type_checked (ginst->type_argv [i], context, error);
3141 if (!mono_error_ok (error))
3142 goto cleanup;
3143 ++count;
3144 }
3145
3146 nginst = mono_metadata_get_generic_inst (ginst->type_argc, type_argv);
3147
3148 cleanup:
3149 for (i = 0; i < count; i++)
3150 mono_metadata_free_type (type_argv [i]);
3151 g_free (type_argv);
3152
3153 return nginst;
3154 }
3155
3156 MonoGenericInst *
3157 mono_metadata_parse_generic_inst (MonoImage *m, MonoGenericContainer *container,
3158 int count, const char *ptr, const char **rptr, MonoError *error)
3159 {
3160 MonoType **type_argv;
3161 MonoGenericInst *ginst;
3162 int i;
3163
3164 mono_error_init (error);
3165 type_argv = g_new0 (MonoType*, count);
3166
3167 for (i = 0; i < count; i++) {
3168 MonoType *t = mono_metadata_parse_type_checked (m, container, 0, FALSE, ptr, &ptr, error);
3169 if (!t) {
3170 g_free (type_argv);
3171 return NULL;
3172 }
3173 type_argv [i] = t;
3174 }
3175
3176 if (rptr)
3177 *rptr = ptr;
3178
3179 ginst = mono_metadata_get_generic_inst (count, type_argv);
3180
3181 g_free (type_argv);
3182
3183 return ginst;
3184 }
3185
3186 static gboolean
3187 do_mono_metadata_parse_generic_class (MonoType *type, MonoImage *m, MonoGenericContainer *container,
3188 const char *ptr, const char **rptr, MonoError *error)
3189 {
3190 MonoGenericInst *inst;
3191 MonoClass *gklass;
3192 MonoType *gtype;
3193 int count;
3194
3195 mono_error_init (error);
3196
3197 // XXX how about transient?
3198 gtype = mono_metadata_parse_type_checked (m, NULL, 0, FALSE, ptr, &ptr, error);
3199 if (gtype == NULL)
3200 return FALSE;
3201
3202 gklass = mono_class_from_mono_type (gtype);
3203 if (!mono_class_is_gtd (gklass)) {
3204 mono_error_set_bad_image (error, m, "Generic instance with non-generic definition");
3205 return FALSE;
3206 }
3207
3208 count = mono_metadata_decode_value (ptr, &ptr);
3209 inst = mono_metadata_parse_generic_inst (m, container, count, ptr, &ptr, error);
3210 if (inst == NULL)
3211 return FALSE;
3212
3213 if (rptr)
3214 *rptr = ptr;
3215
3216 type->data.generic_class = mono_metadata_lookup_generic_class (gklass, inst, FALSE);
3217 return TRUE;
3218 }
3219
3220 /*
3221 * select_container:
3222 * @gc: The generic container to normalize
3223 * @type: The kind of generic parameters the resulting generic-container should contain
3224 */
3225
3226 static MonoGenericContainer *
3227 select_container (MonoGenericContainer *gc, MonoTypeEnum type)
3228 {
3229 gboolean is_var = (type == MONO_TYPE_VAR);
3230 if (!gc)
3231 return NULL;
3232
3233 g_assert (is_var || type == MONO_TYPE_MVAR);
3234
3235 if (is_var) {
3236 if (gc->is_method || gc->parent)
3237 /*
3238 * The current MonoGenericContainer is a generic method -> its `parent'
3239 * points to the containing class'es container.
3240 */
3241 return gc->parent;
3242 }
3243
3244 return gc;
3245 }
3246
3247 MonoGenericContainer *
3248 get_anonymous_container_for_image (MonoImage *image, gboolean is_mvar)
3249 {
3250 MonoGenericContainer **container_pointer;
3251 if (is_mvar)
3252 container_pointer = &image->anonymous_generic_method_container;
3253 else
3254 container_pointer = &image->anonymous_generic_class_container;
3255 MonoGenericContainer *result = *container_pointer;
3256
3257 // This container has never been created; make it now.
3258 if (!result)
3259 {
3260 // Note this is never deallocated anywhere-- it exists for the lifetime of the image it's allocated from
3261 result = (MonoGenericContainer *)mono_image_alloc0 (image, sizeof (MonoGenericContainer));
3262 result->owner.image = image;
3263 result->is_anonymous = TRUE;
3264 result->is_small_param = TRUE;
3265 result->is_method = is_mvar;
3266
3267 // If another thread already made a container, use that and leak this new one.
3268 // (Technically it would currently be safe to just assign instead of CASing.)
3269 MonoGenericContainer *exchange = (MonoGenericContainer *)InterlockedCompareExchangePointer ((volatile gpointer *)container_pointer, result, NULL);
3270 if (exchange)
3271 result = exchange;
3272 }
3273 return result;
3274 }
3275
3276 /*
3277 * mono_metadata_parse_generic_param:
3278 * @generic_container: Our MonoClass's or MonoMethod's MonoGenericContainer;
3279 * see mono_metadata_parse_type_checked() for details.
3280 * Internal routine to parse a generic type parameter.
3281 * LOCKING: Acquires the loader lock
3282 */
3283 static MonoGenericParam *
3284 mono_metadata_parse_generic_param (MonoImage *m, MonoGenericContainer *generic_container,
3285 MonoTypeEnum type, const char *ptr, const char **rptr, MonoError *error)
3286 {
3287 int index = mono_metadata_decode_value (ptr, &ptr);
3288 if (rptr)
3289 *rptr = ptr;
3290
3291 mono_error_init (error);
3292
3293 generic_container = select_container (generic_container, type);
3294 if (!generic_container) {
3295 gboolean is_mvar = FALSE;
3296 switch (type)
3297 {
3298 case MONO_TYPE_VAR:
3299 break;
3300 case MONO_TYPE_MVAR:
3301 is_mvar = TRUE;
3302 break;
3303 default:
3304 g_error ("Cerating generic param object with invalid MonoType"); // This is not a generic param
3305 }
3306
3307 /* Create dummy MonoGenericParam */
3308 MonoGenericParam *param;
3309
3310 param = (MonoGenericParam *)mono_image_alloc0 (m, sizeof (MonoGenericParam));
3311 param->num = index;
3312 param->owner = get_anonymous_container_for_image (m, is_mvar);
3313
3314 return param;
3315 }
3316
3317 if (index >= generic_container->type_argc) {
3318 mono_error_set_bad_image (error, m, "Invalid generic %s parameter index %d, max index is %d",
3319 generic_container->is_method ? "method" : "type",
3320 index, generic_container->type_argc);
3321 return NULL;
3322 }
3323
3324 //This can't return NULL
3325 return mono_generic_container_get_param (generic_container, index);
3326 }
3327
3328 /*
3329 * mono_metadata_get_shared_type:
3330 *
3331 * Return a shared instance of TYPE, if available, NULL otherwise.
3332 * Shared MonoType instances help save memory. Their contents should not be modified
3333 * by the caller. They do not need to be freed as their lifetime is bound by either
3334 * the lifetime of the runtime (builtin types), or the lifetime of the MonoClass
3335 * instance they are embedded in. If they are freed, they should be freed using
3336 * mono_metadata_free_type () instead of g_free ().
3337 */
3338 MonoType*
3339 mono_metadata_get_shared_type (MonoType *type)
3340 {
3341 MonoType *cached;
3342
3343 /* No need to use locking since nobody is modifying the hash table */
3344 if ((cached = (MonoType *)g_hash_table_lookup (type_cache, type)))
3345 return cached;
3346
3347 switch (type->type){
3348 case MONO_TYPE_CLASS:
3349 case MONO_TYPE_VALUETYPE:
3350 if (type == &type->data.klass->byval_arg)
3351 return type;
3352 if (type == &type->data.klass->this_arg)
3353 return type;
3354 break;
3355 default:
3356 break;
3357 }
3358
3359 return NULL;
3360 }
3361
3362 static gboolean
3363 compare_type_literals (MonoImage *image, int class_type, int type_type, MonoError *error)
3364 {
3365 mono_error_init (error);
3366
3367 /* byval_arg.type can be zero if we're decoding a type that references a class been loading.
3368 * See mcs/test/gtest-440. and #650936.
3369 * FIXME This better be moved to the metadata verifier as it can catch more cases.
3370 */
3371 if (!class_type)
3372 return TRUE;
3373 /* NET 1.1 assemblies might encode string and object in a denormalized way.
3374 * See #675464.
3375 */
3376 if (class_type == type_type)
3377 return TRUE;
3378
3379 if (type_type == MONO_TYPE_CLASS) {
3380 if (class_type == MONO_TYPE_STRING || class_type == MONO_TYPE_OBJECT)
3381 return TRUE;
3382 //XXX stringify this argument
3383 mono_error_set_bad_image (error, image, "Expected reference type but got type kind %d", class_type);
3384 return FALSE;
3385 }
3386
3387 g_assert (type_type == MONO_TYPE_VALUETYPE);
3388 switch (class_type) {
3389 case MONO_TYPE_BOOLEAN:
3390 case MONO_TYPE_CHAR:
3391 case MONO_TYPE_I1:
3392 case MONO_TYPE_U1:
3393 case MONO_TYPE_I2:
3394 case MONO_TYPE_U2:
3395 case MONO_TYPE_I4:
3396 case MONO_TYPE_U4:
3397 case MONO_TYPE_I8:
3398 case MONO_TYPE_U8:
3399 case MONO_TYPE_R4:
3400 case MONO_TYPE_R8:
3401 case MONO_TYPE_I:
3402 case MONO_TYPE_U:
3403 case MONO_TYPE_CLASS:
3404 return TRUE;
3405 default:
3406 //XXX stringify this argument
3407 mono_error_set_bad_image (error, image, "Expected value type but got type kind %d", class_type);
3408 return FALSE;
3409 }
3410 }
3411
3412 static gboolean
3413 verify_var_type_and_container (MonoImage *image, int var_type, MonoGenericContainer *container, MonoError *error)
3414 {
3415 mono_error_init (error);
3416 if (var_type == MONO_TYPE_MVAR) {
3417 if (!container->is_method) { //MVAR and a method container
3418 mono_error_set_bad_image (error, image, "MVAR parsed in a context without a method container");
3419 return FALSE;
3420 }
3421 } else {
3422 if (!(!container->is_method || //VAR and class container
3423 (container->is_method && container->parent))) { //VAR and method container with parent
3424 mono_error_set_bad_image (error, image, "VAR parsed in a context without a class container");
3425 return FALSE;
3426 }
3427 }
3428 return TRUE;
3429 }
3430
3431 /*
3432 * do_mono_metadata_parse_type:
3433 * @type: MonoType to be filled in with the return value
3434 * @m: image context
3435 * @generic_context: generics_context
3436 * @transient: whenever to allocate data from the heap
3437 * @ptr: pointer to the encoded type
3438 * @rptr: pointer where the end of the encoded type is saved
3439 *
3440 * Internal routine used to "fill" the contents of @type from an
3441 * allocated pointer. This is done this way to avoid doing too
3442 * many mini-allocations (particularly for the MonoFieldType which
3443 * most of the time is just a MonoType, but sometimes might be augmented).
3444 *
3445 * This routine is used by mono_metadata_parse_type and
3446 * mono_metadata_parse_field_type
3447 *
3448 * This extracts a Type as specified in Partition II (22.2.12)
3449 *
3450 * Returns: FALSE if the type could not be loaded
3451 */
3452 static gboolean
3453 do_mono_metadata_parse_type (MonoType *type, MonoImage *m, MonoGenericContainer *container,
3454 gboolean transient, const char *ptr, const char **rptr, MonoError *error)
3455 {
3456 mono_error_init (error);
3457
3458 type->type = (MonoTypeEnum)mono_metadata_decode_value (ptr, &ptr);
3459
3460 switch (type->type){
3461 case MONO_TYPE_VOID:
3462 case MONO_TYPE_BOOLEAN:
3463 case MONO_TYPE_CHAR:
3464 case MONO_TYPE_I1:
3465 case MONO_TYPE_U1:
3466 case MONO_TYPE_I2:
3467 case MONO_TYPE_U2:
3468 case MONO_TYPE_I4:
3469 case MONO_TYPE_U4:
3470 case MONO_TYPE_I8:
3471 case MONO_TYPE_U8:
3472 case MONO_TYPE_R4:
3473 case MONO_TYPE_R8:
3474 case MONO_TYPE_I:
3475 case MONO_TYPE_U:
3476 case MONO_TYPE_STRING:
3477 case MONO_TYPE_OBJECT:
3478 case MONO_TYPE_TYPEDBYREF:
3479 break;
3480 case MONO_TYPE_VALUETYPE:
3481 case MONO_TYPE_CLASS: {
3482 guint32 token;
3483 MonoClass *klass;
3484 token = mono_metadata_parse_typedef_or_ref (m, ptr, &ptr);
3485 klass = mono_class_get_checked (m, token, error);
3486 type->data.klass = klass;
3487 if (!klass)
3488 return FALSE;
3489
3490 if (!compare_type_literals (m, klass->byval_arg.type, type->type, error))
3491 return FALSE;
3492
3493 break;
3494 }
3495 case MONO_TYPE_SZARRAY: {
3496 MonoType *etype = mono_metadata_parse_type_checked (m, container, 0, transient, ptr, &ptr, error);
3497 if (!etype)
3498 return FALSE;
3499
3500 type->data.klass = mono_class_from_mono_type (etype);
3501
3502 if (transient)
3503 mono_metadata_free_type (etype);
3504
3505 g_assert (type->data.klass); //This was previously a check for NULL, but mcfmt should never fail. It can return a borken MonoClass, but should return at least something.
3506 break;
3507 }
3508 case MONO_TYPE_PTR: {
3509 type->data.type = mono_metadata_parse_type_checked (m, container, 0, transient, ptr, &ptr, error);
3510 if (!type->data.type)
3511 return FALSE;
3512 break;
3513 }
3514 case MONO_TYPE_FNPTR: {
3515 type->data.method = mono_metadata_parse_method_signature_full (m, container, 0, ptr, &ptr, error);
3516 if (!type->data.method)
3517 return FALSE;
3518 break;
3519 }
3520 case MONO_TYPE_ARRAY: {
3521 type->data.array = mono_metadata_parse_array_internal (m, container, transient, ptr, &ptr, error);
3522 if (!type->data.array)
3523 return FALSE;
3524 break;
3525 }
3526 case MONO_TYPE_MVAR:
3527 case MONO_TYPE_VAR: {
3528 if (container && !verify_var_type_and_container (m, type->type, container, error))
3529 return FALSE;
3530
3531 type->data.generic_param = mono_metadata_parse_generic_param (m, container, type->type, ptr, &ptr, error);
3532 if (!type->data.generic_param)
3533 return FALSE;
3534
3535 break;
3536 }
3537 case MONO_TYPE_GENERICINST: {
3538 if (!do_mono_metadata_parse_generic_class (type, m, container, ptr, &ptr, error))
3539 return FALSE;
3540 break;
3541 }
3542 default:
3543 mono_error_set_bad_image (error, m, "type 0x%02x not handled in do_mono_metadata_parse_type on image %s", type->type, m->name);
3544 return FALSE;
3545 }
3546
3547 if (rptr)
3548 *rptr = ptr;
3549 return TRUE;
3550 }
3551
3552 /*
3553 * mono_metadata_free_type:
3554 * @type: type to free
3555 *
3556 * Free the memory allocated for type @type which is allocated on the heap.
3557 */
3558 void
3559 mono_metadata_free_type (MonoType *type)
3560 {
3561 if (type >= builtin_types && type < builtin_types + NBUILTIN_TYPES ())
3562 return;
3563
3564 switch (type->type){
3565 case MONO_TYPE_OBJECT:
3566 case MONO_TYPE_STRING:
3567 if (!type->data.klass)
3568 break;
3569 /* fall through */
3570 case MONO_TYPE_CLASS:
3571 case MONO_TYPE_VALUETYPE:
3572 if (type == &type->data.klass->byval_arg || type == &type->data.klass->this_arg)
3573 return;
3574 break;
3575 case MONO_TYPE_PTR:
3576 mono_metadata_free_type (type->data.type);
3577 break;
3578 case MONO_TYPE_FNPTR:
3579 mono_metadata_free_method_signature (type->data.method);
3580 break;
3581 case MONO_TYPE_ARRAY:
3582 mono_metadata_free_array (type->data.array);
3583 break;
3584 default:
3585 break;
3586 }
3587
3588 g_free (type);
3589 }
3590
3591 #if 0
3592 static void
3593 hex_dump (const char *buffer, int base, int count)
3594 {
3595 int show_header = 1;
3596 int i;
3597
3598 if (count < 0){
3599 count = -count;
3600 show_header = 0;
3601 }
3602
3603 for (i = 0; i < count; i++){
3604 if (show_header)
3605 if ((i % 16) == 0)
3606 printf ("\n0x%08x: ", (unsigned char) base + i);
3607
3608 printf ("%02x ", (unsigned char) (buffer [i]));
3609 }
3610 fflush (stdout);
3611 }
3612 #endif
3613
3614 /**
3615 * @ptr: Points to the beginning of the Section Data (25.3)
3616 */
3617 static MonoExceptionClause*
3618 parse_section_data (MonoImage *m, int *num_clauses, const unsigned char *ptr, MonoError *error)
3619 {
3620 unsigned char sect_data_flags;
3621 int is_fat;
3622 guint32 sect_data_len;
3623 MonoExceptionClause* clauses = NULL;
3624
3625 mono_error_init (error);
3626
3627 while (1) {
3628 /* align on 32-bit boundary */
3629 ptr = dword_align (ptr);
3630 sect_data_flags = *ptr;
3631 ptr++;
3632
3633 is_fat = sect_data_flags & METHOD_HEADER_SECTION_FAT_FORMAT;
3634 if (is_fat) {
3635 sect_data_len = (ptr [2] << 16) | (ptr [1] << 8) | ptr [0];
3636 ptr += 3;
3637 } else {
3638 sect_data_len = ptr [0];
3639 ++ptr;
3640 }
3641
3642 if (sect_data_flags & METHOD_HEADER_SECTION_EHTABLE) {
3643 const unsigned char *p = dword_align (ptr);
3644 int i;
3645 *num_clauses = is_fat ? sect_data_len / 24: sect_data_len / 12;
3646 /* we could just store a pointer if we don't need to byteswap */
3647 clauses = (MonoExceptionClause *)g_malloc0 (sizeof (MonoExceptionClause) * (*num_clauses));
3648 for (i = 0; i < *num_clauses; ++i) {
3649 MonoExceptionClause *ec = &clauses [i];
3650 guint32 tof_value;
3651 if (is_fat) {
3652 ec->flags = read32 (p);
3653 ec->try_offset = read32 (p + 4);
3654 ec->try_len = read32 (p + 8);
3655 ec->handler_offset = read32 (p + 12);
3656 ec->handler_len = read32 (p + 16);
3657 tof_value = read32 (p + 20);
3658 p += 24;
3659 } else {
3660 ec->flags = read16 (p);
3661 ec->try_offset = read16 (p + 2);
3662 ec->try_len = *(p + 4);
3663 ec->handler_offset = read16 (p + 5);
3664 ec->handler_len = *(p + 7);
3665 tof_value = read32 (p + 8);
3666 p += 12;
3667 }
3668 if (ec->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
3669 ec->data.filter_offset = tof_value;
3670 } else if (ec->flags == MONO_EXCEPTION_CLAUSE_NONE) {
3671 ec->data.catch_class = NULL;
3672 if (tof_value) {
3673 ec->data.catch_class = mono_class_get_checked (m, tof_value, error);
3674 if (!is_ok (error)) {
3675 g_free (clauses);
3676 return NULL;
3677 }
3678 }
3679 } else {
3680 ec->data.catch_class = NULL;
3681 }
3682 /* g_print ("try %d: %x %04x-%04x %04x\n", i, ec->flags, ec->try_offset, ec->try_offset+ec->try_len, ec->try_len); */
3683 }
3684
3685 }
3686 if (sect_data_flags & METHOD_HEADER_SECTION_MORE_SECTS)
3687 ptr += sect_data_len - 4; /* LAMESPEC: it seems the size includes the header */
3688 else
3689 return clauses;
3690 }
3691 }
3692
3693 /*
3694 * mono_method_get_header_summary:
3695 * @method: The method to get the header.
3696 * @summary: Where to store the header
3697 *
3698 *
3699 * Returns: TRUE if the header was properly decoded.
3700 */
3701 gboolean
3702 mono_method_get_header_summary (MonoMethod *method, MonoMethodHeaderSummary *summary)
3703 {
3704 int idx;
3705 guint32 rva;
3706 MonoImage* img;
3707 const char *ptr;
3708 unsigned char flags, format;
3709 guint16 fat_flags;
3710
3711 /*Only the GMD has a pointer to the metadata.*/
3712 while (method->is_inflated)
3713 method = ((MonoMethodInflated*)method)->declaring;
3714
3715 summary->code_size = 0;
3716 summary->has_clauses = FALSE;
3717
3718 /*FIXME extract this into a MACRO and share it with mono_method_get_header*/
3719 if ((method->flags & METHOD_ATTRIBUTE_ABSTRACT) || (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) || (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) || (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL))
3720 return FALSE;
3721
3722 if (method->wrapper_type != MONO_WRAPPER_NONE || method->sre_method) {
3723 MonoMethodHeader *header = ((MonoMethodWrapper *)method)->header;
3724 if (!header)
3725 return FALSE;
3726 summary->code_size = header->code_size;
3727 summary->has_clauses = header->num_clauses > 0;
3728 return TRUE;
3729 }
3730
3731
3732 idx = mono_metadata_token_index (method->token);
3733 img = method->klass->image;
3734 rva = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_RVA);
3735
3736 /*We must run the verifier since we'll be decoding it.*/
3737 if (!mono_verifier_verify_method_header (img, rva, NULL))
3738 return FALSE;
3739
3740 ptr = mono_image_rva_map (img, rva);
3741 if (!ptr)
3742 return FALSE;
3743
3744 flags = *(const unsigned char *)ptr;
3745 format = flags & METHOD_HEADER_FORMAT_MASK;
3746
3747 switch (format) {
3748 case METHOD_HEADER_TINY_FORMAT:
3749 ptr++;
3750 summary->code_size = flags >> 2;
3751 break;
3752 case METHOD_HEADER_FAT_FORMAT:
3753 fat_flags = read16 (ptr);
3754 ptr += 4;
3755 summary->code_size = read32 (ptr);
3756 if (fat_flags & METHOD_HEADER_MORE_SECTS)
3757 summary->has_clauses = TRUE;
3758 break;
3759 default:
3760 return FALSE;
3761 }
3762 return TRUE;
3763 }
3764
3765 /*
3766 * mono_metadata_parse_mh_full:
3767 * @m: metadata context
3768 * @generic_context: generics context
3769 * @ptr: pointer to the method header.
3770 *
3771 * Decode the method header at @ptr, including pointer to the IL code,
3772 * info about local variables and optional exception tables.
3773 * This is a Mono runtime internal function.
3774 *
3775 * LOCKING: Acquires the loader lock.
3776 *
3777 * Returns: a transient MonoMethodHeader allocated from the heap.
3778 */
3779 MonoMethodHeader *
3780 mono_metadata_parse_mh_full (MonoImage *m, MonoGenericContainer *container, const char *ptr, MonoError *error)
3781 {
3782 MonoMethodHeader *mh = NULL;
3783 unsigned char flags = *(const unsigned char *) ptr;
3784 unsigned char format = flags & METHOD_HEADER_FORMAT_MASK;
3785 guint16 fat_flags;
3786 guint32 local_var_sig_tok, max_stack, code_size, init_locals;
3787 const unsigned char *code;
3788 MonoExceptionClause* clauses = NULL;
3789 int num_clauses = 0;
3790 MonoTableInfo *t = &m->tables [MONO_TABLE_STANDALONESIG];
3791 guint32 cols [MONO_STAND_ALONE_SIGNATURE_SIZE];
3792
3793 mono_error_init (error);
3794
3795 if (!ptr) {
3796 mono_error_set_bad_image (error, m, "Method header with null pointer");
3797 return NULL;
3798 }
3799
3800 switch (format) {
3801 case METHOD_HEADER_TINY_FORMAT:
3802 mh = (MonoMethodHeader *)g_malloc0 (MONO_SIZEOF_METHOD_HEADER);
3803 ptr++;
3804 mh->max_stack = 8;
3805 mh->is_transient = TRUE;
3806 local_var_sig_tok = 0;
3807 mh->code_size = flags >> 2;
3808 mh->code = (unsigned char*)ptr;
3809 return mh;
3810 case METHOD_HEADER_FAT_FORMAT:
3811 fat_flags = read16 (ptr);
3812 ptr += 2;
3813 max_stack = read16 (ptr);
3814 ptr += 2;
3815 code_size = read32 (ptr);
3816 ptr += 4;
3817 local_var_sig_tok = read32 (ptr);
3818 ptr += 4;
3819
3820 if (fat_flags & METHOD_HEADER_INIT_LOCALS)
3821 init_locals = 1;
3822 else
3823 init_locals = 0;
3824
3825 code = (unsigned char*)ptr;
3826
3827 if (!(fat_flags & METHOD_HEADER_MORE_SECTS))
3828 break;
3829
3830 /*
3831 * There are more sections
3832 */
3833 ptr = (char*)code + code_size;
3834 break;
3835 default:
3836 mono_error_set_bad_image (error, m, "Invalid method header format %d", format);
3837 return NULL;
3838 }
3839
3840 if (local_var_sig_tok) {
3841 int idx = (local_var_sig_tok & 0xffffff)-1;
3842 if (idx >= t->rows || idx < 0) {
3843 mono_error_set_bad_image (error, m, "Invalid method header local vars signature token 0x%8x", idx);
3844 goto fail;
3845 }
3846 mono_metadata_decode_row (t, idx, cols, 1);
3847
3848 if (!mono_verifier_verify_standalone_signature (m, cols [MONO_STAND_ALONE_SIGNATURE], NULL)) {
3849 mono_error_set_bad_image (error, m, "Method header locals signature 0x%8x verification failed", idx);
3850 goto fail;
3851 }
3852 }
3853 if (fat_flags & METHOD_HEADER_MORE_SECTS) {
3854 clauses = parse_section_data (m, &num_clauses, (const unsigned char*)ptr, error);
3855 if (!is_ok (error))
3856 goto fail;
3857 }
3858 if (local_var_sig_tok) {
3859 const char *locals_ptr;
3860 int len=0, i;
3861
3862 locals_ptr = mono_metadata_blob_heap (m, cols [MONO_STAND_ALONE_SIGNATURE]);
3863 mono_metadata_decode_blob_size (locals_ptr, &locals_ptr);
3864 if (*locals_ptr != 0x07)
3865 g_warning ("wrong signature for locals blob");
3866 locals_ptr++;
3867 len = mono_metadata_decode_value (locals_ptr, &locals_ptr);
3868 mh = (MonoMethodHeader *)g_malloc0 (MONO_SIZEOF_METHOD_HEADER + len * sizeof (MonoType*) + num_clauses * sizeof (MonoExceptionClause));
3869 mh->num_locals = len;
3870 for (i = 0; i < len; ++i) {
3871 mh->locals [i] = mono_metadata_parse_type_internal (m, container, 0, TRUE, locals_ptr, &locals_ptr, error);
3872 if (!is_ok (error))
3873 goto fail;
3874 }
3875 } else {
3876 mh = (MonoMethodHeader *)g_malloc0 (MONO_SIZEOF_METHOD_HEADER + num_clauses * sizeof (MonoExceptionClause));
3877 }
3878 mh->code = code;
3879 mh->code_size = code_size;
3880 mh->max_stack = max_stack;
3881 mh->is_transient = TRUE;
3882 mh->init_locals = init_locals;
3883 if (clauses) {
3884 MonoExceptionClause* clausesp = (MonoExceptionClause*)&mh->locals [mh->num_locals];
3885 memcpy (clausesp, clauses, num_clauses * sizeof (MonoExceptionClause));
3886 g_free (clauses);
3887 mh->clauses = clausesp;
3888 mh->num_clauses = num_clauses;
3889 }
3890 return mh;
3891 fail:
3892 g_free (clauses);
3893 g_free (mh);
3894 return NULL;
3895
3896 }
3897
3898 /*
3899 * mono_metadata_parse_mh:
3900 * @generic_context: generics context
3901 * @ptr: pointer to the method header.
3902 *
3903 * Decode the method header at @ptr, including pointer to the IL code,
3904 * info about local variables and optional exception tables.
3905 *
3906 * Returns: a transient MonoMethodHeader allocated from the heap.
3907 */
3908 MonoMethodHeader *
3909 mono_metadata_parse_mh (MonoImage *m, const char *ptr)
3910 {
3911 MonoError error;
3912 MonoMethodHeader *header = mono_metadata_parse_mh_full (m, NULL, ptr, &error);
3913 mono_error_cleanup (&error);
3914 return header;
3915 }
3916
3917 /*
3918 * mono_metadata_free_mh:
3919 * @mh: a method header
3920 *
3921 * Free the memory allocated for the method header.
3922 */
3923 void
3924 mono_metadata_free_mh (MonoMethodHeader *mh)
3925 {
3926 int i;
3927
3928 /* If it is not transient it means it's part of a wrapper method,
3929 * or a SRE-generated method, so the lifetime in that case is
3930 * dictated by the method's own lifetime
3931 */
3932 if (mh->is_transient) {
3933 for (i = 0; i < mh->num_locals; ++i)
3934 mono_metadata_free_type (mh->locals [i]);
3935 g_free (mh);
3936 }
3937 }
3938
3939 /*
3940 * mono_method_header_get_code:
3941 * @header: a MonoMethodHeader pointer
3942 * @code_size: memory location for returning the code size
3943 * @max_stack: memory location for returning the max stack
3944 *
3945 * Method header accessor to retreive info about the IL code properties:
3946 * a pointer to the IL code itself, the size of the code and the max number
3947 * of stack slots used by the code.
3948 *
3949 * Returns: pointer to the IL code represented by the method header.
3950 */
3951 const unsigned char*
3952 mono_method_header_get_code (MonoMethodHeader *header, guint32* code_size, guint32* max_stack)
3953 {
3954 if (code_size)
3955 *code_size = header->code_size;
3956 if (max_stack)
3957 *max_stack = header->max_stack;
3958 return header->code;
3959 }
3960
3961 /*
3962 * mono_method_header_get_locals:
3963 * @header: a MonoMethodHeader pointer
3964 * @num_locals: memory location for returning the number of local variables
3965 * @init_locals: memory location for returning the init_locals flag
3966 *
3967 * Method header accessor to retreive info about the local variables:
3968 * an array of local types, the number of locals and whether the locals
3969 * are supposed to be initialized to 0 on method entry
3970 *
3971 * Returns: pointer to an array of types of the local variables
3972 */
3973 MonoType**
3974 mono_method_header_get_locals (MonoMethodHeader *header, guint32* num_locals, gboolean *init_locals)
3975 {
3976 if (num_locals)
3977 *num_locals = header->num_locals;
3978 if (init_locals)
3979 *init_locals = header->init_locals;
3980 return header->locals;
3981 }
3982
3983 /*
3984 * mono_method_header_get_num_clauses:
3985 * @header: a MonoMethodHeader pointer
3986 *
3987 * Method header accessor to retreive the number of exception clauses.
3988 *
3989 * Returns: the number of exception clauses present
3990 */
3991 int
3992 mono_method_header_get_num_clauses (MonoMethodHeader *header)
3993 {
3994 return header->num_clauses;
3995 }
3996
3997 /*
3998 * mono_method_header_get_clauses:
3999 * @header: a MonoMethodHeader pointer
4000 * @method: MonoMethod the header belongs to
4001 * @iter: pointer to a iterator
4002 * @clause: pointer to a MonoExceptionClause structure which will be filled with the info
4003 *
4004 * Get the info about the exception clauses in the method. Set *iter to NULL to
4005 * initiate the iteration, then call the method repeatedly until it returns FALSE.
4006 * At each iteration, the structure pointed to by clause if filled with the
4007 * exception clause information.
4008 *
4009 * Returns: TRUE if clause was filled with info, FALSE if there are no more exception
4010 * clauses.
4011 */
4012 int
4013 mono_method_header_get_clauses (MonoMethodHeader *header, MonoMethod *method, gpointer *iter, MonoExceptionClause *clause)
4014 {
4015 MonoExceptionClause *sc;
4016 /* later we'll be able to use this interface to parse the clause info on demand,
4017 * without allocating anything.
4018 */
4019 if (!iter || !header->num_clauses)
4020 return FALSE;
4021 if (!*iter) {
4022 *iter = sc = header->clauses;
4023 *clause = *sc;
4024 return TRUE;
4025 }
4026 sc = (MonoExceptionClause *)*iter;
4027 sc++;
4028 if (sc < header->clauses + header->num_clauses) {
4029 *iter = sc;
4030 *clause = *sc;
4031 return TRUE;
4032 }
4033 return FALSE;
4034 }
4035
4036 /**
4037 * mono_metadata_parse_field_type:
4038 * @m: metadata context to extract information from
4039 * @ptr: pointer to the field signature
4040 * @rptr: pointer updated to match the end of the decoded stream
4041 *
4042 * Parses the field signature, and returns the type information for it.
4043 *
4044 * Returns: The MonoType that was extracted from @ptr.
4045 */
4046 MonoType *
4047 mono_metadata_parse_field_type (MonoImage *m, short field_flags, const char *ptr, const char **rptr)
4048 {
4049 MonoError error;
4050 MonoType * type = mono_metadata_parse_type_internal (m, NULL, field_flags, FALSE, ptr, rptr, &error);
4051 mono_error_cleanup (&error);
4052 return type;
4053 }
4054
4055 /**
4056 * mono_metadata_parse_param:
4057 * @m: metadata context to extract information from
4058 * @ptr: pointer to the param signature
4059 * @rptr: pointer updated to match the end of the decoded stream
4060 *
4061 * Parses the param signature, and returns the type information for it.
4062 *
4063 * Returns: The MonoType that was extracted from @ptr.
4064 */
4065 MonoType *
4066 mono_metadata_parse_param (MonoImage *m, const char *ptr, const char **rptr)
4067 {
4068 MonoError error;
4069 MonoType * type = mono_metadata_parse_type_internal (m, NULL, 0, FALSE, ptr, rptr, &error);
4070 mono_error_cleanup (&error);
4071 return type;
4072 }
4073
4074 /*
4075 * mono_metadata_token_from_dor:
4076 * @dor_token: A TypeDefOrRef coded index
4077 *
4078 * dor_token is a TypeDefOrRef coded index: it contains either
4079 * a TypeDef, TypeRef or TypeSpec in the lower bits, and the upper
4080 * bits contain an index into the table.
4081 *
4082 * Returns: an expanded token
4083 */
4084 guint32
4085 mono_metadata_token_from_dor (guint32 dor_index)
4086 {
4087 guint32 table, idx;
4088
4089 table = dor_index & 0x03;
4090 idx = dor_index >> 2;
4091
4092 switch (table){
4093 case 0: /* TypeDef */
4094 return MONO_TOKEN_TYPE_DEF | idx;
4095 case 1: /* TypeRef */
4096 return MONO_TOKEN_TYPE_REF | idx;
4097 case 2: /* TypeSpec */
4098 return MONO_TOKEN_TYPE_SPEC | idx;
4099 default:
4100 g_assert_not_reached ();
4101 }
4102
4103 return 0;
4104 }
4105
4106 /*
4107 * We use this to pass context information to the row locator
4108 */
4109 typedef struct {
4110 int idx; /* The index that we are trying to locate */
4111 int col_idx; /* The index in the row where idx may be stored */
4112 MonoTableInfo *t; /* pointer to the table */
4113 guint32 result;
4114 } locator_t;
4115
4116 /*
4117 * How the row locator works.
4118 *
4119 * Table A
4120 * ___|___
4121 * ___|___ Table B
4122 * ___|___------> _______
4123 * ___|___ _______
4124 *
4125 * A column in the rows of table A references an index in table B.
4126 * For example A may be the TYPEDEF table and B the METHODDEF table.
4127 *
4128 * Given an index in table B we want to get the row in table A
4129 * where the column n references our index in B.
4130 *
4131 * In the locator_t structure:
4132 * t is table A
4133 * col_idx is the column number
4134 * index is the index in table B
4135 * result will be the index in table A
4136 *
4137 * Examples:
4138 * Table A Table B column (in table A)
4139 * TYPEDEF METHODDEF MONO_TYPEDEF_METHOD_LIST
4140 * TYPEDEF FIELD MONO_TYPEDEF_FIELD_LIST
4141 * PROPERTYMAP PROPERTY MONO_PROPERTY_MAP_PROPERTY_LIST
4142 * INTERFIMPL TYPEDEF MONO_INTERFACEIMPL_CLASS
4143 * METHODSEM PROPERTY ASSOCIATION (encoded index)
4144 *
4145 * Note that we still don't support encoded indexes.
4146 *
4147 */
4148 static int
4149 typedef_locator (const void *a, const void *b)
4150 {
4151 locator_t *loc = (locator_t *) a;
4152 const char *bb = (const char *) b;
4153 int typedef_index = (bb - loc->t->base) / loc->t->row_size;
4154 guint32 col, col_next;
4155
4156 col = mono_metadata_decode_row_col (loc->t, typedef_index, loc->col_idx);
4157
4158 if (loc->idx < col)
4159 return -1;
4160
4161 /*
4162 * Need to check that the next row is valid.
4163 */
4164 if (typedef_index + 1 < loc->t->rows) {
4165 col_next = mono_metadata_decode_row_col (loc->t, typedef_index + 1, loc->col_idx);
4166 if (loc->idx >= col_next)
4167 return 1;
4168
4169 if (col == col_next)
4170 return 1;
4171 }
4172
4173 loc->result = typedef_index;
4174
4175 return 0;
4176 }
4177
4178 static int
4179 table_locator (const void *a, const void *b)
4180 {
4181 locator_t *loc = (locator_t *) a;
4182 const char *bb = (const char *) b;
4183 guint32 table_index = (bb - loc->t->base) / loc->t->row_size;
4184 guint32 col;
4185
4186 col = mono_metadata_decode_row_col (loc->t, table_index, loc->col_idx);
4187
4188 if (loc->idx == col) {
4189 loc->result = table_index;
4190 return 0;
4191 }
4192 if (loc->idx < col)
4193 return -1;
4194 else
4195 return 1;
4196 }
4197
4198 static int
4199 declsec_locator (const void *a, const void *b)
4200 {
4201 locator_t *loc = (locator_t *) a;
4202 const char *bb = (const char *) b;
4203 guint32 table_index = (bb - loc->t->base) / loc->t->row_size;
4204 guint32 col;
4205
4206 col = mono_metadata_decode_row_col (loc->t, table_index, loc->col_idx);
4207
4208 if (loc->idx == col) {
4209 loc->result = table_index;
4210 return 0;
4211 }
4212 if (loc->idx < col)
4213 return -1;
4214 else
4215 return 1;
4216 }
4217
4218 /**
4219 * search_ptr_table:
4220 *
4221 * Return the 1-based row index in TABLE, which must be one of the *Ptr tables,
4222 * which contains IDX.
4223 */
4224 static guint32
4225 search_ptr_table (MonoImage *image, int table, int idx)
4226 {
4227 MonoTableInfo *ptrdef = &image->tables [table];
4228 int i;
4229
4230 /* Use a linear search to find our index in the table */
4231 for (i = 0; i < ptrdef->rows; i ++)
4232 /* All the Ptr tables have the same structure */
4233 if (mono_metadata_decode_row_col (ptrdef, i, 0) == idx)
4234 break;
4235
4236 if (i < ptrdef->rows)
4237 return i + 1;
4238 else
4239 return idx;
4240 }
4241
4242 /**
4243 * mono_metadata_typedef_from_field:
4244 * @meta: metadata context
4245 * @index: FieldDef token
4246 *
4247 * Returns: the 1-based index into the TypeDef table of the type that
4248 * declared the field described by @index, or 0 if not found.
4249 */
4250 guint32
4251 mono_metadata_typedef_from_field (MonoImage *meta, guint32 index)
4252 {
4253 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_TYPEDEF];
4254 locator_t loc;
4255
4256 if (!tdef->base)
4257 return 0;
4258
4259 loc.idx = mono_metadata_token_index (index);
4260 loc.col_idx = MONO_TYPEDEF_FIELD_LIST;
4261 loc.t = tdef;
4262
4263 if (meta->uncompressed_metadata)
4264 loc.idx = search_ptr_table (meta, MONO_TABLE_FIELD_POINTER, loc.idx);
4265
4266 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, typedef_locator))
4267 return 0;
4268
4269 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
4270 return loc.result + 1;
4271 }
4272
4273 /*
4274 * mono_metadata_typedef_from_method:
4275 * @meta: metadata context
4276 * @index: MethodDef token
4277 *
4278 * Returns: the 1-based index into the TypeDef table of the type that
4279 * declared the method described by @index. 0 if not found.
4280 */
4281 guint32
4282 mono_metadata_typedef_from_method (MonoImage *meta, guint32 index)
4283 {
4284 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_TYPEDEF];
4285 locator_t loc;
4286
4287 if (!tdef->base)
4288 return 0;
4289
4290 loc.idx = mono_metadata_token_index (index);
4291 loc.col_idx = MONO_TYPEDEF_METHOD_LIST;
4292 loc.t = tdef;
4293
4294 if (meta->uncompressed_metadata)
4295 loc.idx = search_ptr_table (meta, MONO_TABLE_METHOD_POINTER, loc.idx);
4296
4297 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, typedef_locator))
4298 return 0;
4299
4300 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
4301 return loc.result + 1;
4302 }
4303
4304 /*
4305 * mono_metadata_interfaces_from_typedef_full:
4306 * @meta: metadata context
4307 * @index: typedef token
4308 * @interfaces: Out parameter used to store the interface array
4309 * @count: Out parameter used to store the number of interfaces
4310 * @heap_alloc_result: if TRUE the result array will be g_malloc'd
4311 * @context: The generic context
4312 *
4313 * The array of interfaces that the @index typedef token implements is returned in
4314 * @interfaces. The number of elements in the array is returned in @count.
4315 *
4316
4317 * Returns: TRUE on success, FALSE on failure.
4318 */
4319 gboolean
4320 mono_metadata_interfaces_from_typedef_full (MonoImage *meta, guint32 index, MonoClass ***interfaces, guint *count, gboolean heap_alloc_result, MonoGenericContext *context, MonoError *error)
4321 {
4322 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_INTERFACEIMPL];
4323 locator_t loc;
4324 guint32 start, pos;
4325 guint32 cols [MONO_INTERFACEIMPL_SIZE];
4326 MonoClass **result;
4327
4328 *interfaces = NULL;
4329 *count = 0;
4330
4331 mono_error_init (error);
4332
4333 if (!tdef->base)
4334 return TRUE;
4335
4336 loc.idx = mono_metadata_token_index (index);
4337 loc.col_idx = MONO_INTERFACEIMPL_CLASS;
4338 loc.t = tdef;
4339
4340 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
4341 return TRUE;
4342
4343 start = loc.result;
4344 /*
4345 * We may end up in the middle of the rows...
4346 */
4347 while (start > 0) {
4348 if (loc.idx == mono_metadata_decode_row_col (tdef, start - 1, MONO_INTERFACEIMPL_CLASS))
4349 start--;
4350 else
4351 break;
4352 }
4353 pos = start;
4354 while (pos < tdef->rows) {
4355 mono_metadata_decode_row (tdef, pos, cols, MONO_INTERFACEIMPL_SIZE);
4356 if (cols [MONO_INTERFACEIMPL_CLASS] != loc.idx)
4357 break;
4358 ++pos;
4359 }
4360
4361 if (heap_alloc_result)
4362 result = g_new0 (MonoClass*, pos - start);
4363 else
4364 result = (MonoClass **)mono_image_alloc0 (meta, sizeof (MonoClass*) * (pos - start));
4365
4366 pos = start;
4367 while (pos < tdef->rows) {
4368 MonoClass *iface;
4369
4370 mono_metadata_decode_row (tdef, pos, cols, MONO_INTERFACEIMPL_SIZE);
4371 if (cols [MONO_INTERFACEIMPL_CLASS] != loc.idx)
4372 break;
4373 iface = mono_class_get_and_inflate_typespec_checked (
4374 meta, mono_metadata_token_from_dor (cols [MONO_INTERFACEIMPL_INTERFACE]), context, error);
4375 if (iface == NULL)
4376 return FALSE;
4377 result [pos - start] = iface;
4378 ++pos;
4379 }
4380 *count = pos - start;
4381 *interfaces = result;
4382 return TRUE;
4383 }
4384
4385 /*
4386 * @meta: metadata context
4387 * @index: typedef token
4388 * @count: Out parameter used to store the number of interfaces
4389 *
4390 * The array of interfaces that the @index typedef token implements is returned in
4391 * @interfaces. The number of elements in the array is returned in @count. The returned
4392 * array is g_malloc'd and the caller must free it.
4393 *
4394 * LOCKING: Acquires the loader lock .
4395 *
4396 * Returns: the interface array on success, NULL on failure.
4397 */
4398
4399 MonoClass**
4400 mono_metadata_interfaces_from_typedef (MonoImage *meta, guint32 index, guint *count)
4401 {
4402 MonoError error;
4403 MonoClass **interfaces = NULL;
4404 gboolean rv;
4405
4406 rv = mono_metadata_interfaces_from_typedef_full (meta, index, &interfaces, count, TRUE, NULL, &error);
4407 g_assert (mono_error_ok (&error)); /* FIXME dont swallow the error */
4408 if (rv)
4409 return interfaces;
4410 else
4411 return NULL;
4412 }
4413
4414 /*
4415 * mono_metadata_nested_in_typedef:
4416 * @meta: metadata context
4417 * @index: typedef token
4418 *
4419 * Returns: the 1-based index into the TypeDef table of the type
4420 * where the type described by @index is nested.
4421 * Returns 0 if @index describes a non-nested type.
4422 */
4423 guint32
4424 mono_metadata_nested_in_typedef (MonoImage *meta, guint32 index)
4425 {
4426 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_NESTEDCLASS];
4427 locator_t loc;
4428
4429 if (!tdef->base)
4430 return 0;
4431
4432 loc.idx = mono_metadata_token_index (index);
4433 loc.col_idx = MONO_NESTED_CLASS_NESTED;
4434 loc.t = tdef;
4435
4436 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
4437 return 0;
4438
4439 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
4440 return mono_metadata_decode_row_col (tdef, loc.result, MONO_NESTED_CLASS_ENCLOSING) | MONO_TOKEN_TYPE_DEF;
4441 }
4442
4443 /*
4444 * mono_metadata_nesting_typedef:
4445 * @meta: metadata context
4446 * @index: typedef token
4447 *
4448 * Returns: the 1-based index into the TypeDef table of the first type
4449 * that is nested inside the type described by @index. The search starts at
4450 * @start_index. returns 0 if no such type is found.
4451 */
4452 guint32
4453 mono_metadata_nesting_typedef (MonoImage *meta, guint32 index, guint32 start_index)
4454 {
4455 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_NESTEDCLASS];
4456 guint32 start;
4457 guint32 class_index = mono_metadata_token_index (index);
4458
4459 if (!tdef->base)
4460 return 0;
4461
4462 start = start_index;
4463
4464 while (start <= tdef->rows) {
4465 if (class_index == mono_metadata_decode_row_col (tdef, start - 1, MONO_NESTED_CLASS_ENCLOSING))
4466 break;
4467 else
4468 start++;
4469 }
4470
4471 if (start > tdef->rows)
4472 return 0;
4473 else
4474 return start;
4475 }
4476
4477 /*
4478 * mono_metadata_packing_from_typedef:
4479 * @meta: metadata context
4480 * @index: token representing a type
4481 *
4482 * Returns: the info stored in the ClassLAyout table for the given typedef token
4483 * into the @packing and @size pointers.
4484 * Returns 0 if the info is not found.
4485 */
4486 guint32
4487 mono_metadata_packing_from_typedef (MonoImage *meta, guint32 index, guint32 *packing, guint32 *size)
4488 {
4489 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_CLASSLAYOUT];
4490 locator_t loc;
4491 guint32 cols [MONO_CLASS_LAYOUT_SIZE];
4492
4493 if (!tdef->base)
4494 return 0;
4495
4496 loc.idx = mono_metadata_token_index (index);
4497 loc.col_idx = MONO_CLASS_LAYOUT_PARENT;
4498 loc.t = tdef;
4499
4500 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
4501 return 0;
4502
4503 mono_metadata_decode_row (tdef, loc.result, cols, MONO_CLASS_LAYOUT_SIZE);
4504 if (packing)
4505 *packing = cols [MONO_CLASS_LAYOUT_PACKING_SIZE];
4506 if (size)
4507 *size = cols [MONO_CLASS_LAYOUT_CLASS_SIZE];
4508
4509 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
4510 return loc.result + 1;
4511 }
4512
4513 /*
4514 * mono_metadata_custom_attrs_from_index:
4515 * @meta: metadata context
4516 * @index: token representing the parent
4517 *
4518 * Returns: the 1-based index into the CustomAttribute table of the first
4519 * attribute which belongs to the metadata object described by @index.
4520 * Returns 0 if no such attribute is found.
4521 */
4522 guint32
4523 mono_metadata_custom_attrs_from_index (MonoImage *meta, guint32 index)
4524 {
4525 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_CUSTOMATTRIBUTE];
4526 locator_t loc;
4527
4528 if (!tdef->base)
4529 return 0;
4530
4531 loc.idx = index;
4532 loc.col_idx = MONO_CUSTOM_ATTR_PARENT;
4533 loc.t = tdef;
4534
4535 /* FIXME: Index translation */
4536
4537 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
4538 return 0;
4539
4540 /* Find the first entry by searching backwards */
4541 while ((loc.result > 0) && (mono_metadata_decode_row_col (tdef, loc.result - 1, MONO_CUSTOM_ATTR_PARENT) == index))
4542 loc.result --;
4543
4544 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
4545 return loc.result + 1;
4546 }
4547
4548 /*
4549 * mono_metadata_declsec_from_index:
4550 * @meta: metadata context
4551 * @index: token representing the parent
4552 *
4553 * Returns: the 0-based index into the DeclarativeSecurity table of the first
4554 * attribute which belongs to the metadata object described by @index.
4555 * Returns -1 if no such attribute is found.
4556 */
4557 guint32
4558 mono_metadata_declsec_from_index (MonoImage *meta, guint32 index)
4559 {
4560 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_DECLSECURITY];
4561 locator_t loc;
4562
4563 if (!tdef->base)
4564 return -1;
4565
4566 loc.idx = index;
4567 loc.col_idx = MONO_DECL_SECURITY_PARENT;
4568 loc.t = tdef;
4569
4570 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, declsec_locator))
4571 return -1;
4572
4573 /* Find the first entry by searching backwards */
4574 while ((loc.result > 0) && (mono_metadata_decode_row_col (tdef, loc.result - 1, MONO_DECL_SECURITY_PARENT) == index))
4575 loc.result --;
4576
4577 return loc.result;
4578 }
4579
4580 /*
4581 * mono_metadata_localscope_from_methoddef:
4582 * @meta: metadata context
4583 * @index: methoddef index
4584 *
4585 * Returns: the 1-based index into the LocalScope table of the first
4586 * scope which belongs to the method described by @index.
4587 * Returns 0 if no such row is found.
4588 */
4589 guint32
4590 mono_metadata_localscope_from_methoddef (MonoImage *meta, guint32 index)
4591 {
4592 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_LOCALSCOPE];
4593 locator_t loc;
4594
4595 if (!tdef->base)
4596 return 0;
4597
4598 loc.idx = index;
4599 loc.col_idx = MONO_LOCALSCOPE_METHOD;
4600 loc.t = tdef;
4601
4602 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
4603 return 0;
4604
4605 /* Find the first entry by searching backwards */
4606 while ((loc.result > 0) && (mono_metadata_decode_row_col (tdef, loc.result - 1, MONO_LOCALSCOPE_METHOD) == index))
4607 loc.result --;
4608
4609 return loc.result + 1;
4610 }
4611
4612 #ifdef DEBUG
4613 static void
4614 mono_backtrace (int limit)
4615 {
4616 void *array[limit];
4617 char **names;
4618 int i;
4619 backtrace (array, limit);
4620 names = backtrace_symbols (array, limit);
4621 for (i =0; i < limit; ++i) {
4622 g_print ("\t%s\n", names [i]);
4623 }
4624 g_free (names);
4625 }
4626 #endif
4627
4628 static int i8_align;
4629
4630 /*
4631 * mono_type_set_alignment:
4632 *
4633 * Set the alignment used by runtime to layout fields etc. of type TYPE to ALIGN.
4634 * This should only be used in AOT mode since the resulting layout will not match the
4635 * host abi layout.
4636 */
4637 void
4638 mono_type_set_alignment (MonoTypeEnum type, int align)
4639 {
4640 /* Support only a few types whose alignment is abi dependent */
4641 switch (type) {
4642 case MONO_TYPE_I8:
4643 i8_align = align;
4644 break;
4645 default:
4646 g_assert_not_reached ();
4647 break;
4648 }
4649 }
4650
4651 /*
4652 * mono_type_size:
4653 * @t: the type to return the size of
4654 *
4655 * Returns: the number of bytes required to hold an instance of this
4656 * type in memory
4657 */
4658 int
4659 mono_type_size (MonoType *t, int *align)
4660 {
4661 MonoTypeEnum simple_type;
4662
4663 if (!t) {
4664 *align = 1;
4665 return 0;
4666 }
4667 if (t->byref) {
4668 *align = MONO_ABI_ALIGNOF (gpointer);
4669 return MONO_ABI_SIZEOF (gpointer);
4670 }
4671
4672 simple_type = t->type;
4673 again:
4674 switch (simple_type) {
4675 case MONO_TYPE_VOID:
4676 *align = 1;
4677 return 0;
4678 case MONO_TYPE_BOOLEAN:
4679 *align = MONO_ABI_ALIGNOF (gint8);
4680 return 1;
4681 case MONO_TYPE_I1:
4682 case MONO_TYPE_U1:
4683 *align = MONO_ABI_ALIGNOF (gint8);
4684 return 1;
4685 case MONO_TYPE_CHAR:
4686 case MONO_TYPE_I2:
4687 case MONO_TYPE_U2:
4688 *align = MONO_ABI_ALIGNOF (gint16);
4689 return 2;
4690 case MONO_TYPE_I4:
4691 case MONO_TYPE_U4:
4692 *align = MONO_ABI_ALIGNOF (gint32);
4693 return 4;
4694 case MONO_TYPE_R4:
4695 *align = MONO_ABI_ALIGNOF (float);
4696 return 4;
4697 case MONO_TYPE_I8:
4698 case MONO_TYPE_U8:
4699 *align = MONO_ABI_ALIGNOF (gint64);
4700 return 8;
4701 case MONO_TYPE_R8:
4702 *align = MONO_ABI_ALIGNOF (double);
4703 return 8;
4704 case MONO_TYPE_I:
4705 case MONO_TYPE_U:
4706 *align = MONO_ABI_ALIGNOF (gpointer);
4707 return MONO_ABI_SIZEOF (gpointer);
4708 case MONO_TYPE_VALUETYPE: {
4709 if (t->data.klass->enumtype)
4710 return mono_type_size (mono_class_enum_basetype (t->data.klass), align);
4711 else
4712 return mono_class_value_size (t->data.klass, (guint32*)align);
4713 }
4714 case MONO_TYPE_STRING:
4715 case MONO_TYPE_OBJECT:
4716 case MONO_TYPE_CLASS:
4717 case MONO_TYPE_SZARRAY:
4718 case MONO_TYPE_PTR:
4719 case MONO_TYPE_FNPTR:
4720 case MONO_TYPE_ARRAY:
4721 *align = MONO_ABI_ALIGNOF (gpointer);
4722 return MONO_ABI_SIZEOF (gpointer);
4723 case MONO_TYPE_TYPEDBYREF:
4724 return mono_class_value_size (mono_defaults.typed_reference_class, (guint32*)align);
4725 case MONO_TYPE_GENERICINST: {
4726 MonoGenericClass *gclass = t->data.generic_class;
4727 MonoClass *container_class = gclass->container_class;
4728
4729 // g_assert (!gclass->inst->is_open);
4730
4731 if (container_class->valuetype) {
4732 if (container_class->enumtype)
4733 return mono_type_size (mono_class_enum_basetype (container_class), align);
4734 else
4735 return mono_class_value_size (mono_class_from_mono_type (t), (guint32*)align);
4736 } else {
4737 *align = MONO_ABI_ALIGNOF (gpointer);
4738 return MONO_ABI_SIZEOF (gpointer);
4739 }
4740 }
4741 case MONO_TYPE_VAR:
4742 case MONO_TYPE_MVAR:
4743 if (!t->data.generic_param->gshared_constraint || t->data.generic_param->gshared_constraint->type == MONO_TYPE_VALUETYPE) {
4744 *align = MONO_ABI_ALIGNOF (gpointer);
4745 return MONO_ABI_SIZEOF (gpointer);
4746 } else {
4747 /* The gparam can only match types given by gshared_constraint */
4748 return mono_type_size (t->data.generic_param->gshared_constraint, align);
4749 goto again;
4750 }
4751 default:
4752 g_error ("mono_type_size: type 0x%02x unknown", t->type);
4753 }
4754 return 0;
4755 }
4756
4757 /*
4758 * mono_type_stack_size:
4759 * @t: the type to return the size it uses on the stack
4760 *
4761 * Returns: the number of bytes required to hold an instance of this
4762 * type on the runtime stack
4763 */
4764 int
4765 mono_type_stack_size (MonoType *t, int *align)
4766 {
4767 return mono_type_stack_size_internal (t, align, FALSE);
4768 }
4769
4770 int
4771 mono_type_stack_size_internal (MonoType *t, int *align, gboolean allow_open)
4772 {
4773 int tmp;
4774 MonoTypeEnum simple_type;
4775 #if SIZEOF_VOID_P == SIZEOF_REGISTER
4776 int stack_slot_size = MONO_ABI_SIZEOF (gpointer);
4777 int stack_slot_align = MONO_ABI_ALIGNOF (gpointer);
4778 #elif SIZEOF_VOID_P < SIZEOF_REGISTER
4779 int stack_slot_size = SIZEOF_REGISTER;
4780 int stack_slot_align = SIZEOF_REGISTER;
4781 #endif
4782
4783 g_assert (t != NULL);
4784
4785 if (!align)
4786 align = &tmp;
4787
4788 if (t->byref) {
4789 *align = stack_slot_align;
4790 return stack_slot_size;
4791 }
4792
4793 simple_type = t->type;
4794 switch (simple_type) {
4795 case MONO_TYPE_BOOLEAN:
4796 case MONO_TYPE_CHAR:
4797 case MONO_TYPE_I1:
4798 case MONO_TYPE_U1:
4799 case MONO_TYPE_I2:
4800 case MONO_TYPE_U2:
4801 case MONO_TYPE_I4:
4802 case MONO_TYPE_U4:
4803 case MONO_TYPE_I:
4804 case MONO_TYPE_U:
4805 case MONO_TYPE_STRING:
4806 case MONO_TYPE_OBJECT:
4807 case MONO_TYPE_CLASS:
4808 case MONO_TYPE_SZARRAY:
4809 case MONO_TYPE_PTR:
4810 case MONO_TYPE_FNPTR:
4811 case MONO_TYPE_ARRAY:
4812 *align = stack_slot_align;
4813 return stack_slot_size;
4814 case MONO_TYPE_VAR:
4815 case MONO_TYPE_MVAR:
4816 g_assert (allow_open);
4817 if (!t->data.generic_param->gshared_constraint || t->data.generic_param->gshared_constraint->type == MONO_TYPE_VALUETYPE) {
4818 *align = stack_slot_align;
4819 return stack_slot_size;
4820 } else {
4821 /* The gparam can only match types given by gshared_constraint */
4822 return mono_type_stack_size_internal (t->data.generic_param->gshared_constraint, align, allow_open);
4823 }
4824 case MONO_TYPE_TYPEDBYREF:
4825 *align = stack_slot_align;
4826 return stack_slot_size * 3;
4827 case MONO_TYPE_R4:
4828 *align = MONO_ABI_ALIGNOF (float);
4829 return sizeof (float);
4830 case MONO_TYPE_I8:
4831 case MONO_TYPE_U8:
4832 *align = MONO_ABI_ALIGNOF (gint64);
4833 return sizeof (gint64);
4834 case MONO_TYPE_R8:
4835 *align = MONO_ABI_ALIGNOF (double);
4836 return sizeof (double);
4837 case MONO_TYPE_VALUETYPE: {
4838 guint32 size;
4839
4840 if (t->data.klass->enumtype)
4841 return mono_type_stack_size_internal (mono_class_enum_basetype (t->data.klass), align, allow_open);
4842 else {
4843 size = mono_class_value_size (t->data.klass, (guint32*)align);
4844
4845 *align = *align + stack_slot_align - 1;
4846 *align &= ~(stack_slot_align - 1);
4847
4848 size += stack_slot_size - 1;
4849 size &= ~(stack_slot_size - 1);
4850
4851 return size;
4852 }
4853 }
4854 case MONO_TYPE_GENERICINST: {
4855 MonoGenericClass *gclass = t->data.generic_class;
4856 MonoClass *container_class = gclass->container_class;
4857
4858 if (!allow_open)
4859 g_assert (!gclass->context.class_inst->is_open);
4860
4861 if (container_class->valuetype) {
4862 if (container_class->enumtype)
4863 return mono_type_stack_size_internal (mono_class_enum_basetype (container_class), align, allow_open);
4864 else {
4865 guint32 size = mono_class_value_size (mono_class_from_mono_type (t), (guint32*)align);
4866
4867 *align = *align + stack_slot_align - 1;
4868 *align &= ~(stack_slot_align - 1);
4869
4870 size += stack_slot_size - 1;
4871 size &= ~(stack_slot_size - 1);
4872
4873 return size;
4874 }
4875 } else {
4876 *align = stack_slot_align;
4877 return stack_slot_size;
4878 }
4879 }
4880 default:
4881 g_error ("type 0x%02x unknown", t->type);
4882 }
4883 return 0;
4884 }
4885
4886 gboolean
4887 mono_type_generic_inst_is_valuetype (MonoType *type)
4888 {
4889 g_assert (type->type == MONO_TYPE_GENERICINST);
4890 return type->data.generic_class->container_class->valuetype;
4891 }
4892
4893 gboolean
4894 mono_metadata_generic_class_is_valuetype (MonoGenericClass *gclass)
4895 {
4896 return gclass->container_class->valuetype;
4897 }
4898
4899 static gboolean
4900 _mono_metadata_generic_class_equal (const MonoGenericClass *g1, const MonoGenericClass *g2, gboolean signature_only)
4901 {
4902 MonoGenericInst *i1 = g1->context.class_inst;
4903 MonoGenericInst *i2 = g2->context.class_inst;
4904
4905 if (g1->is_dynamic != g2->is_dynamic)
4906 return FALSE;
4907 if (!mono_metadata_class_equal (g1->container_class, g2->container_class, signature_only))
4908 return FALSE;
4909 if (!mono_generic_inst_equal_full (i1, i2, signature_only))
4910 return FALSE;
4911 return g1->is_tb_open == g2->is_tb_open;
4912 }
4913
4914 static gboolean
4915 _mono_metadata_generic_class_container_equal (const MonoGenericClass *g1, MonoClass *c2, gboolean signature_only)
4916 {
4917 MonoGenericInst *i1 = g1->context.class_inst;
4918 MonoGenericInst *i2 = mono_class_get_generic_container (c2)->context.class_inst;
4919
4920 if (!mono_metadata_class_equal (g1->container_class, c2, signature_only))
4921 return FALSE;
4922 if (!mono_generic_inst_equal_full (i1, i2, signature_only))
4923 return FALSE;
4924 return !g1->is_tb_open;
4925 }
4926
4927 guint
4928 mono_metadata_generic_context_hash (const MonoGenericContext *context)
4929 {
4930 /* FIXME: check if this seed is good enough */
4931 guint hash = 0xc01dfee7;
4932 if (context->class_inst)
4933 hash = ((hash << 5) - hash) ^ mono_metadata_generic_inst_hash (context->class_inst);
4934 if (context->method_inst)
4935 hash = ((hash << 5) - hash) ^ mono_metadata_generic_inst_hash (context->method_inst);
4936 return hash;
4937 }
4938
4939 gboolean
4940 mono_metadata_generic_context_equal (const MonoGenericContext *g1, const MonoGenericContext *g2)
4941 {
4942 return g1->class_inst == g2->class_inst && g1->method_inst == g2->method_inst;
4943 }
4944
4945 /*
4946 * mono_metadata_str_hash:
4947 *
4948 * This should be used instead of g_str_hash for computing hash codes visible
4949 * outside this module, since g_str_hash () is not guaranteed to be stable
4950 * (its not the same in eglib for example).
4951 */
4952 guint
4953 mono_metadata_str_hash (gconstpointer v1)
4954 {
4955 /* Same as g_str_hash () in glib */
4956 char *p = (char *) v1;
4957 guint hash = *p;
4958
4959 while (*p++) {
4960 if (*p)
4961 hash = (hash << 5) - hash + *p;
4962 }
4963
4964 return hash;
4965 }
4966
4967 /*
4968 * mono_metadata_type_hash:
4969 * @t1: a type
4970 *
4971 * Computes an hash value for @t1 to be used in GHashTable.
4972 * The returned hash is guaranteed to be the same across executions.
4973 */
4974 guint
4975 mono_metadata_type_hash (MonoType *t1)
4976 {
4977 guint hash = t1->type;
4978
4979 hash |= t1->byref << 6; /* do not collide with t1->type values */
4980 switch (t1->type) {
4981 case MONO_TYPE_VALUETYPE:
4982 case MONO_TYPE_CLASS:
4983 case MONO_TYPE_SZARRAY: {
4984 MonoClass *klass = t1->data.klass;
4985 /*
4986 * Dynamic classes must not be hashed on their type since it can change
4987 * during runtime. For example, if we hash a reference type that is
4988 * later made into a valuetype.
4989 *
4990 * This is specially problematic with generic instances since they are
4991 * inserted in a bunch of hash tables before been finished.
4992 */
4993 if (image_is_dynamic (klass->image))
4994 return (t1->byref << 6) | mono_metadata_str_hash (klass->name);
4995 return ((hash << 5) - hash) ^ mono_metadata_str_hash (klass->name);
4996 }
4997 case MONO_TYPE_PTR:
4998 return ((hash << 5) - hash) ^ mono_metadata_type_hash (t1->data.type);
4999 case MONO_TYPE_ARRAY:
5000 return ((hash << 5) - hash) ^ mono_metadata_type_hash (&t1->data.array->eklass->byval_arg);
5001 case MONO_TYPE_GENERICINST:
5002 return ((hash << 5) - hash) ^ mono_generic_class_hash (t1->data.generic_class);
5003 case MONO_TYPE_VAR:
5004 case MONO_TYPE_MVAR:
5005 return ((hash << 5) - hash) ^ mono_metadata_generic_param_hash (t1->data.generic_param);
5006 default:
5007 return hash;
5008 }
5009 }
5010
5011 guint
5012 mono_metadata_generic_param_hash (MonoGenericParam *p)
5013 {
5014 guint hash;
5015 MonoGenericParamInfo *info;
5016
5017 hash = (mono_generic_param_num (p) << 2);
5018 if (p->gshared_constraint)
5019 hash = ((hash << 5) - hash) ^ mono_metadata_type_hash (p->gshared_constraint);
5020 info = mono_generic_param_info (p);
5021 /* Can't hash on the owner klass/method, since those might not be set when this is called */
5022 if (info)
5023 hash = ((hash << 5) - hash) ^ info->token;
5024 return hash;
5025 }
5026
5027 static gboolean
5028 mono_metadata_generic_param_equal_internal (MonoGenericParam *p1, MonoGenericParam *p2, gboolean signature_only)
5029 {
5030 if (p1 == p2)
5031 return TRUE;
5032 if (mono_generic_param_num (p1) != mono_generic_param_num (p2))
5033 return FALSE;
5034 if (p1->gshared_constraint && p2->gshared_constraint) {
5035 if (!mono_metadata_type_equal (p1->gshared_constraint, p2->gshared_constraint))
5036 return FALSE;
5037 } else {
5038 if (p1->gshared_constraint != p2->gshared_constraint)
5039 return FALSE;
5040 }
5041
5042 /*
5043 * We have to compare the image as well because if we didn't,
5044 * the generic_inst_cache lookup wouldn't care about the image
5045 * of generic params, so what could happen is that a generic
5046 * inst with params from image A is put into the cache, then
5047 * image B gets that generic inst from the cache, image A is
5048 * unloaded, so the inst is deleted, but image B still retains
5049 * a pointer to it.
5050 */
5051 if (mono_generic_param_owner (p1) == mono_generic_param_owner (p2))
5052 return TRUE;
5053
5054 /*
5055 * If `signature_only' is true, we're comparing two (method) signatures.
5056 * In this case, the owner of two type parameters doesn't need to match.
5057 */
5058
5059 return signature_only;
5060 }
5061
5062 gboolean
5063 mono_metadata_generic_param_equal (MonoGenericParam *p1, MonoGenericParam *p2)
5064 {
5065 return mono_metadata_generic_param_equal_internal (p1, p2, TRUE);
5066 }
5067
5068 static gboolean
5069 mono_metadata_class_equal (MonoClass *c1, MonoClass *c2, gboolean signature_only)
5070 {
5071 if (c1 == c2)
5072 return TRUE;
5073 if (mono_class_is_ginst (c1) && mono_class_is_ginst (c2))
5074 return _mono_metadata_generic_class_equal (mono_class_get_generic_class (c1), mono_class_get_generic_class (c2), signature_only);
5075 if (mono_class_is_ginst (c1) && mono_class_is_gtd (c2))
5076 return _mono_metadata_generic_class_container_equal (mono_class_get_generic_class (c1), c2, signature_only);
5077 if (mono_class_is_gtd (c1) && mono_class_is_ginst (c2))
5078 return _mono_metadata_generic_class_container_equal (mono_class_get_generic_class (c2), c1, signature_only);
5079 if ((c1->byval_arg.type == MONO_TYPE_VAR) && (c2->byval_arg.type == MONO_TYPE_VAR))
5080 return mono_metadata_generic_param_equal_internal (
5081 c1->byval_arg.data.generic_param, c2->byval_arg.data.generic_param, signature_only);
5082 if ((c1->byval_arg.type == MONO_TYPE_MVAR) && (c2->byval_arg.type == MONO_TYPE_MVAR))
5083 return mono_metadata_generic_param_equal_internal (
5084 c1->byval_arg.data.generic_param, c2->byval_arg.data.generic_param, signature_only);
5085 if (signature_only &&
5086 (c1->byval_arg.type == MONO_TYPE_SZARRAY) && (c2->byval_arg.type == MONO_TYPE_SZARRAY))
5087 return mono_metadata_class_equal (c1->byval_arg.data.klass, c2->byval_arg.data.klass, signature_only);
5088 if (signature_only &&
5089 (c1->byval_arg.type == MONO_TYPE_ARRAY) && (c2->byval_arg.type == MONO_TYPE_ARRAY))
5090 return do_mono_metadata_type_equal (&c1->byval_arg, &c2->byval_arg, signature_only);
5091 return FALSE;
5092 }
5093
5094 static gboolean
5095 mono_metadata_fnptr_equal (MonoMethodSignature *s1, MonoMethodSignature *s2, gboolean signature_only)
5096 {
5097 gpointer iter1 = 0, iter2 = 0;
5098
5099 if (s1 == s2)
5100 return TRUE;
5101 if (s1->call_convention != s2->call_convention)
5102 return FALSE;
5103 if (s1->sentinelpos != s2->sentinelpos)
5104 return FALSE;
5105 if (s1->hasthis != s2->hasthis)
5106 return FALSE;
5107 if (s1->explicit_this != s2->explicit_this)
5108 return FALSE;
5109 if (! do_mono_metadata_type_equal (s1->ret, s2->ret, signature_only))
5110 return FALSE;
5111 if (s1->param_count != s2->param_count)
5112 return FALSE;
5113
5114 while (TRUE) {
5115 MonoType *t1 = mono_signature_get_params (s1, &iter1);
5116 MonoType *t2 = mono_signature_get_params (s2, &iter2);
5117
5118 if (t1 == NULL || t2 == NULL)
5119 return (t1 == t2);
5120 if (! do_mono_metadata_type_equal (t1, t2, signature_only))
5121 return FALSE;
5122 }
5123 }
5124
5125 /*
5126 * mono_metadata_type_equal:
5127 * @t1: a type
5128 * @t2: another type
5129 * @signature_only: If true, treat ginsts as equal which are instantiated separately but have equal positional value
5130 *
5131 * Determine if @t1 and @t2 represent the same type.
5132 * Returns: #TRUE if @t1 and @t2 are equal.
5133 */
5134 static gboolean
5135 do_mono_metadata_type_equal (MonoType *t1, MonoType *t2, gboolean signature_only)
5136 {
5137 if (t1->type != t2->type || t1->byref != t2->byref)
5138 return FALSE;
5139
5140 switch (t1->type) {
5141 case MONO_TYPE_VOID:
5142 case MONO_TYPE_BOOLEAN:
5143 case MONO_TYPE_CHAR:
5144 case MONO_TYPE_I1:
5145 case MONO_TYPE_U1:
5146 case MONO_TYPE_I2:
5147 case MONO_TYPE_U2:
5148 case MONO_TYPE_I4:
5149 case MONO_TYPE_U4:
5150 case MONO_TYPE_I8:
5151 case MONO_TYPE_U8:
5152 case MONO_TYPE_R4:
5153 case MONO_TYPE_R8:
5154 case MONO_TYPE_STRING:
5155 case MONO_TYPE_I:
5156 case MONO_TYPE_U:
5157 case MONO_TYPE_OBJECT:
5158 case MONO_TYPE_TYPEDBYREF:
5159 return TRUE;
5160 case MONO_TYPE_VALUETYPE:
5161 case MONO_TYPE_CLASS:
5162 case MONO_TYPE_SZARRAY:
5163 return mono_metadata_class_equal (t1->data.klass, t2->data.klass, signature_only);
5164 case MONO_TYPE_PTR:
5165 return do_mono_metadata_type_equal (t1->data.type, t2->data.type, signature_only);
5166 case MONO_TYPE_ARRAY:
5167 if (t1->data.array->rank != t2->data.array->rank)
5168 return FALSE;
5169 return mono_metadata_class_equal (t1->data.array->eklass, t2->data.array->eklass, signature_only);
5170 case MONO_TYPE_GENERICINST:
5171 return _mono_metadata_generic_class_equal (
5172 t1->data.generic_class, t2->data.generic_class, signature_only);
5173 case MONO_TYPE_VAR:
5174 return mono_metadata_generic_param_equal_internal (
5175 t1->data.generic_param, t2->data.generic_param, signature_only);
5176 case MONO_TYPE_MVAR:
5177 return mono_metadata_generic_param_equal_internal (
5178 t1->data.generic_param, t2->data.generic_param, signature_only);
5179 case MONO_TYPE_FNPTR:
5180 return mono_metadata_fnptr_equal (t1->data.method, t2->data.method, signature_only);
5181 default:
5182 g_error ("implement type compare for %0x!", t1->type);
5183 return FALSE;
5184 }
5185
5186 return FALSE;
5187 }
5188
5189 gboolean
5190 mono_metadata_type_equal (MonoType *t1, MonoType *t2)
5191 {
5192 return do_mono_metadata_type_equal (t1, t2, FALSE);
5193 }
5194
5195 /**
5196 * mono_metadata_type_equal_full:
5197 * @t1: a type
5198 * @t2: another type
5199 * @signature_only: if signature only comparison should be made
5200 *
5201 * Determine if @t1 and @t2 are signature compatible if @signature_only is #TRUE, otherwise
5202 * behaves the same way as mono_metadata_type_equal.
5203 * The function mono_metadata_type_equal(a, b) is just a shortcut for mono_metadata_type_equal_full(a, b, FALSE).
5204 * Returns: #TRUE if @t1 and @t2 are equal taking @signature_only into account.
5205 */
5206 gboolean
5207 mono_metadata_type_equal_full (MonoType *t1, MonoType *t2, gboolean signature_only)
5208 {
5209 return do_mono_metadata_type_equal (t1, t2, signature_only);
5210 }
5211
5212 /**
5213 * mono_metadata_signature_equal:
5214 * @sig1: a signature
5215 * @sig2: another signature
5216 *
5217 * Determine if @sig1 and @sig2 represent the same signature, with the
5218 * same number of arguments and the same types.
5219 * Returns: #TRUE if @sig1 and @sig2 are equal.
5220 */
5221 gboolean
5222 mono_metadata_signature_equal (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
5223 {
5224 int i;
5225
5226 if (sig1->hasthis != sig2->hasthis || sig1->param_count != sig2->param_count)
5227 return FALSE;
5228
5229 if (sig1->generic_param_count != sig2->generic_param_count)
5230 return FALSE;
5231
5232 /*
5233 * We're just comparing the signatures of two methods here:
5234 *
5235 * If we have two generic methods `void Foo<U> (U u)' and `void Bar<V> (V v)',
5236 * U and V are equal here.
5237 *
5238 * That's what the `signature_only' argument of do_mono_metadata_type_equal() is for.
5239 */
5240
5241 for (i = 0; i < sig1->param_count; i++) {
5242 MonoType *p1 = sig1->params[i];
5243 MonoType *p2 = sig2->params[i];
5244
5245 /* if (p1->attrs != p2->attrs)
5246 return FALSE;
5247 */
5248 if (!do_mono_metadata_type_equal (p1, p2, TRUE))
5249 return FALSE;
5250 }
5251
5252 if (!do_mono_metadata_type_equal (sig1->ret, sig2->ret, TRUE))
5253 return FALSE;
5254 return TRUE;
5255 }
5256
5257 /**
5258 * mono_metadata_type_dup:
5259 * @image: image to alloc memory from
5260 * @original: type to duplicate
5261 *
5262 * Returns: copy of type allocated from the image's mempool (or from the heap, if @image is null).
5263 */
5264 MonoType *
5265 mono_metadata_type_dup (MonoImage *image, const MonoType *o)
5266 {
5267 MonoType *r = NULL;
5268 int sizeof_o = MONO_SIZEOF_TYPE;
5269 if (o->num_mods)
5270 sizeof_o += o->num_mods * sizeof (MonoCustomMod);
5271
5272 r = image ? (MonoType *)mono_image_alloc0 (image, sizeof_o) : (MonoType *)g_malloc (sizeof_o);
5273
5274 memcpy (r, o, sizeof_o);
5275
5276 if (o->type == MONO_TYPE_PTR) {
5277 r->data.type = mono_metadata_type_dup (image, o->data.type);
5278 } else if (o->type == MONO_TYPE_ARRAY) {
5279 r->data.array = mono_dup_array_type (image, o->data.array);
5280 } else if (o->type == MONO_TYPE_FNPTR) {
5281 /*FIXME the dup'ed signature is leaked mono_metadata_free_type*/
5282 r->data.method = mono_metadata_signature_deep_dup (image, o->data.method);
5283 }
5284 return r;
5285 }
5286
5287 guint
5288 mono_signature_hash (MonoMethodSignature *sig)
5289 {
5290 guint i, res = sig->ret->type;
5291
5292 for (i = 0; i < sig->param_count; i++)
5293 res = (res << 5) - res + mono_type_hash (sig->params[i]);
5294
5295 return res;
5296 }
5297
5298 /*
5299 * mono_metadata_encode_value:
5300 * @value: value to encode
5301 * @buf: buffer where to write the compressed representation
5302 * @endbuf: pointer updated to point at the end of the encoded output
5303 *
5304 * Encodes the value @value in the compressed representation used
5305 * in metadata and stores the result in @buf. @buf needs to be big
5306 * enough to hold the data (4 bytes).
5307 */
5308 void
5309 mono_metadata_encode_value (guint32 value, char *buf, char **endbuf)
5310 {
5311 char *p = buf;
5312
5313 if (value < 0x80)
5314 *p++ = value;
5315 else if (value < 0x4000) {
5316 p [0] = 0x80 | (value >> 8);
5317 p [1] = value & 0xff;
5318 p += 2;
5319 } else {
5320 p [0] = (value >> 24) | 0xc0;
5321 p [1] = (value >> 16) & 0xff;
5322 p [2] = (value >> 8) & 0xff;
5323 p [3] = value & 0xff;
5324 p += 4;
5325 }
5326 if (endbuf)
5327 *endbuf = p;
5328 }
5329
5330 /*
5331 * mono_metadata_field_info:
5332 * @meta: the Image the field is defined in
5333 * @index: the index in the field table representing the field
5334 * @offset: a pointer to an integer where to store the offset that
5335 * may have been specified for the field in a FieldLayout table
5336 * @rva: a pointer to the RVA of the field data in the image that
5337 * may have been defined in a FieldRVA table
5338 * @marshal_spec: a pointer to the marshal spec that may have been
5339 * defined for the field in a FieldMarshal table.
5340 *
5341 * Gather info for field @index that may have been defined in the FieldLayout,
5342 * FieldRVA and FieldMarshal tables.
5343 * Either of offset, rva and marshal_spec can be NULL if you're not interested
5344 * in the data.
5345 */
5346 void
5347 mono_metadata_field_info (MonoImage *meta, guint32 index, guint32 *offset, guint32 *rva,
5348 MonoMarshalSpec **marshal_spec)
5349 {
5350 mono_metadata_field_info_full (meta, index, offset, rva, marshal_spec, FALSE);
5351 }
5352
5353 void
5354 mono_metadata_field_info_with_mempool (MonoImage *meta, guint32 index, guint32 *offset, guint32 *rva,
5355 MonoMarshalSpec **marshal_spec)
5356 {
5357 mono_metadata_field_info_full (meta, index, offset, rva, marshal_spec, TRUE);
5358 }
5359
5360 static void
5361 mono_metadata_field_info_full (MonoImage *meta, guint32 index, guint32 *offset, guint32 *rva,
5362 MonoMarshalSpec **marshal_spec, gboolean alloc_from_image)
5363 {
5364 MonoTableInfo *tdef;
5365 locator_t loc;
5366
5367 loc.idx = index + 1;
5368 if (meta->uncompressed_metadata)
5369 loc.idx = search_ptr_table (meta, MONO_TABLE_FIELD_POINTER, loc.idx);
5370
5371 if (offset) {
5372 tdef = &meta->tables [MONO_TABLE_FIELDLAYOUT];
5373
5374 loc.col_idx = MONO_FIELD_LAYOUT_FIELD;
5375 loc.t = tdef;
5376
5377 if (tdef->base && mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator)) {
5378 *offset = mono_metadata_decode_row_col (tdef, loc.result, MONO_FIELD_LAYOUT_OFFSET);
5379 } else {
5380 *offset = (guint32)-1;
5381 }
5382 }
5383 if (rva) {
5384 tdef = &meta->tables [MONO_TABLE_FIELDRVA];
5385
5386 loc.col_idx = MONO_FIELD_RVA_FIELD;
5387 loc.t = tdef;
5388
5389 if (tdef->base && mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator)) {
5390 /*
5391 * LAMESPEC: There is no signature, no nothing, just the raw data.
5392 */
5393 *rva = mono_metadata_decode_row_col (tdef, loc.result, MONO_FIELD_RVA_RVA);
5394 } else {
5395 *rva = 0;
5396 }
5397 }
5398 if (marshal_spec) {
5399 const char *p;
5400
5401 if ((p = mono_metadata_get_marshal_info (meta, index, TRUE))) {
5402 *marshal_spec = mono_metadata_parse_marshal_spec_full (alloc_from_image ? meta : NULL, meta, p);
5403 }
5404 }
5405
5406 }
5407
5408 /*
5409 * mono_metadata_get_constant_index:
5410 * @meta: the Image the field is defined in
5411 * @index: the token that may have a row defined in the constants table
5412 * @hint: possible position for the row
5413 *
5414 * @token must be a FieldDef, ParamDef or PropertyDef token.
5415 *
5416 * Returns: the index into the Constants table or 0 if not found.
5417 */
5418 guint32
5419 mono_metadata_get_constant_index (MonoImage *meta, guint32 token, guint32 hint)
5420 {
5421 MonoTableInfo *tdef;
5422 locator_t loc;
5423 guint32 index = mono_metadata_token_index (token);
5424
5425 tdef = &meta->tables [MONO_TABLE_CONSTANT];
5426 index <<= MONO_HASCONSTANT_BITS;
5427 switch (mono_metadata_token_table (token)) {
5428 case MONO_TABLE_FIELD:
5429 index |= MONO_HASCONSTANT_FIEDDEF;
5430 break;
5431 case MONO_TABLE_PARAM:
5432 index |= MONO_HASCONSTANT_PARAM;
5433 break;
5434 case MONO_TABLE_PROPERTY:
5435 index |= MONO_HASCONSTANT_PROPERTY;
5436 break;
5437 default:
5438 g_warning ("Not a valid token for the constant table: 0x%08x", token);
5439 return 0;
5440 }
5441 loc.idx = index;
5442 loc.col_idx = MONO_CONSTANT_PARENT;
5443 loc.t = tdef;
5444
5445 /* FIXME: Index translation */
5446
5447 if ((hint > 0) && (hint < tdef->rows) && (mono_metadata_decode_row_col (tdef, hint - 1, MONO_CONSTANT_PARENT) == index))
5448 return hint;
5449
5450 if (tdef->base && mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator)) {
5451 return loc.result + 1;
5452 }
5453 return 0;
5454 }
5455
5456 /*
5457 * mono_metadata_events_from_typedef:
5458 * @meta: metadata context
5459 * @index: 0-based index (in the TypeDef table) describing a type
5460 *
5461 * Returns: the 0-based index in the Event table for the events in the
5462 * type. The last event that belongs to the type (plus 1) is stored
5463 * in the @end_idx pointer.
5464 */
5465 guint32
5466 mono_metadata_events_from_typedef (MonoImage *meta, guint32 index, guint *end_idx)
5467 {
5468 locator_t loc;
5469 guint32 start, end;
5470 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_EVENTMAP];
5471
5472 *end_idx = 0;
5473
5474 if (!tdef->base)
5475 return 0;
5476
5477 loc.t = tdef;
5478 loc.col_idx = MONO_EVENT_MAP_PARENT;
5479 loc.idx = index + 1;
5480
5481 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
5482 return 0;
5483
5484 start = mono_metadata_decode_row_col (tdef, loc.result, MONO_EVENT_MAP_EVENTLIST);
5485 if (loc.result + 1 < tdef->rows) {
5486 end = mono_metadata_decode_row_col (tdef, loc.result + 1, MONO_EVENT_MAP_EVENTLIST) - 1;
5487 } else {
5488 end = meta->tables [MONO_TABLE_EVENT].rows;
5489 }
5490
5491 *end_idx = end;
5492 return start - 1;
5493 }
5494
5495 /*
5496 * mono_metadata_methods_from_event:
5497 * @meta: metadata context
5498 * @index: 0-based index (in the Event table) describing a event
5499 *
5500 * Returns: the 0-based index in the MethodDef table for the methods in the
5501 * event. The last method that belongs to the event (plus 1) is stored
5502 * in the @end_idx pointer.
5503 */
5504 guint32
5505 mono_metadata_methods_from_event (MonoImage *meta, guint32 index, guint *end_idx)
5506 {
5507 locator_t loc;
5508 guint start, end;
5509 guint32 cols [MONO_METHOD_SEMA_SIZE];
5510 MonoTableInfo *msemt = &meta->tables [MONO_TABLE_METHODSEMANTICS];
5511
5512 *end_idx = 0;
5513 if (!msemt->base)
5514 return 0;
5515
5516 if (meta->uncompressed_metadata)
5517 index = search_ptr_table (meta, MONO_TABLE_EVENT_POINTER, index + 1) - 1;
5518
5519 loc.t = msemt;
5520 loc.col_idx = MONO_METHOD_SEMA_ASSOCIATION;
5521 loc.idx = ((index + 1) << MONO_HAS_SEMANTICS_BITS) | MONO_HAS_SEMANTICS_EVENT; /* Method association coded index */
5522
5523 if (!mono_binary_search (&loc, msemt->base, msemt->rows, msemt->row_size, table_locator))
5524 return 0;
5525
5526 start = loc.result;
5527 /*
5528 * We may end up in the middle of the rows...
5529 */
5530 while (start > 0) {
5531 if (loc.idx == mono_metadata_decode_row_col (msemt, start - 1, MONO_METHOD_SEMA_ASSOCIATION))
5532 start--;
5533 else
5534 break;
5535 }
5536 end = start + 1;
5537 while (end < msemt->rows) {
5538 mono_metadata_decode_row (msemt, end, cols, MONO_METHOD_SEMA_SIZE);
5539 if (cols [MONO_METHOD_SEMA_ASSOCIATION] != loc.idx)
5540 break;
5541 ++end;
5542 }
5543 *end_idx = end;
5544 return start;
5545 }
5546
5547 /*
5548 * mono_metadata_properties_from_typedef:
5549 * @meta: metadata context
5550 * @index: 0-based index (in the TypeDef table) describing a type
5551 *
5552 * Returns: the 0-based index in the Property table for the properties in the
5553 * type. The last property that belongs to the type (plus 1) is stored
5554 * in the @end_idx pointer.
5555 */
5556 guint32
5557 mono_metadata_properties_from_typedef (MonoImage *meta, guint32 index, guint *end_idx)
5558 {
5559 locator_t loc;
5560 guint32 start, end;
5561 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_PROPERTYMAP];
5562
5563 *end_idx = 0;
5564
5565 if (!tdef->base)
5566 return 0;
5567
5568 loc.t = tdef;
5569 loc.col_idx = MONO_PROPERTY_MAP_PARENT;
5570 loc.idx = index + 1;
5571
5572 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
5573 return 0;
5574
5575 start = mono_metadata_decode_row_col (tdef, loc.result, MONO_PROPERTY_MAP_PROPERTY_LIST);
5576 if (loc.result + 1 < tdef->rows) {
5577 end = mono_metadata_decode_row_col (tdef, loc.result + 1, MONO_PROPERTY_MAP_PROPERTY_LIST) - 1;
5578 } else {
5579 end = meta->tables [MONO_TABLE_PROPERTY].rows;
5580 }
5581
5582 *end_idx = end;
5583 return start - 1;
5584 }
5585
5586 /*
5587 * mono_metadata_methods_from_property:
5588 * @meta: metadata context
5589 * @index: 0-based index (in the PropertyDef table) describing a property
5590 *
5591 * Returns: the 0-based index in the MethodDef table for the methods in the
5592 * property. The last method that belongs to the property (plus 1) is stored
5593 * in the @end_idx pointer.
5594 */
5595 guint32
5596 mono_metadata_methods_from_property (MonoImage *meta, guint32 index, guint *end_idx)
5597 {
5598 locator_t loc;
5599 guint start, end;
5600 guint32 cols [MONO_METHOD_SEMA_SIZE];
5601 MonoTableInfo *msemt = &meta->tables [MONO_TABLE_METHODSEMANTICS];
5602
5603 *end_idx = 0;
5604 if (!msemt->base)
5605 return 0;
5606
5607 if (meta->uncompressed_metadata)
5608 index = search_ptr_table (meta, MONO_TABLE_PROPERTY_POINTER, index + 1) - 1;
5609
5610 loc.t = msemt;
5611 loc.col_idx = MONO_METHOD_SEMA_ASSOCIATION;
5612 loc.idx = ((index + 1) << MONO_HAS_SEMANTICS_BITS) | MONO_HAS_SEMANTICS_PROPERTY; /* Method association coded index */
5613
5614 if (!mono_binary_search (&loc, msemt->base, msemt->rows, msemt->row_size, table_locator))
5615 return 0;
5616
5617 start = loc.result;
5618 /*
5619 * We may end up in the middle of the rows...
5620 */
5621 while (start > 0) {
5622 if (loc.idx == mono_metadata_decode_row_col (msemt, start - 1, MONO_METHOD_SEMA_ASSOCIATION))
5623 start--;
5624 else
5625 break;
5626 }
5627 end = start + 1;
5628 while (end < msemt->rows) {
5629 mono_metadata_decode_row (msemt, end, cols, MONO_METHOD_SEMA_SIZE);
5630 if (cols [MONO_METHOD_SEMA_ASSOCIATION] != loc.idx)
5631 break;
5632 ++end;
5633 }
5634 *end_idx = end;
5635 return start;
5636 }
5637
5638 guint32
5639 mono_metadata_implmap_from_method (MonoImage *meta, guint32 method_idx)
5640 {
5641 locator_t loc;
5642 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_IMPLMAP];
5643
5644 if (!tdef->base)
5645 return 0;
5646
5647 /* No index translation seems to be needed */
5648
5649 loc.t = tdef;
5650 loc.col_idx = MONO_IMPLMAP_MEMBER;
5651 loc.idx = ((method_idx + 1) << MONO_MEMBERFORWD_BITS) | MONO_MEMBERFORWD_METHODDEF;
5652
5653 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
5654 return 0;
5655
5656 return loc.result + 1;
5657 }
5658
5659 /**
5660 * @image: context where the image is created
5661 * @type_spec: typespec token
5662 * @deprecated use mono_type_create_from_typespec_checked that has proper error handling
5663 *
5664 * Creates a MonoType representing the TypeSpec indexed by the @type_spec
5665 * token.
5666 */
5667 MonoType *
5668 mono_type_create_from_typespec (MonoImage *image, guint32 type_spec)
5669 {
5670 MonoError error;
5671 MonoType *type = mono_type_create_from_typespec_checked (image, type_spec, &error);
5672 if (!type)
5673 g_error ("Could not create typespec %x due to %s", type_spec, mono_error_get_message (&error));
5674 return type;
5675 }
5676
5677 MonoType *
5678 mono_type_create_from_typespec_checked (MonoImage *image, guint32 type_spec, MonoError *error)
5679
5680 {
5681 guint32 idx = mono_metadata_token_index (type_spec);
5682 MonoTableInfo *t;
5683 guint32 cols [MONO_TYPESPEC_SIZE];
5684 const char *ptr;
5685 MonoType *type, *type2;
5686
5687 mono_error_init (error);
5688
5689 mono_image_lock (image);
5690 type = (MonoType *)g_hash_table_lookup (image->typespec_cache, GUINT_TO_POINTER (type_spec));
5691 mono_image_unlock (image);
5692 if (type)
5693 return type;
5694
5695 t = &image->tables [MONO_TABLE_TYPESPEC];
5696
5697 mono_metadata_decode_row (t, idx-1, cols, MONO_TYPESPEC_SIZE);
5698 ptr = mono_metadata_blob_heap (image, cols [MONO_TYPESPEC_SIGNATURE]);
5699
5700 if (!mono_verifier_verify_typespec_signature (image, cols [MONO_TYPESPEC_SIGNATURE], type_spec, NULL)) {
5701 mono_error_set_bad_image (error, image, "Could not verify type spec %08x.", type_spec);
5702 return NULL;
5703 }
5704
5705 mono_metadata_decode_value (ptr, &ptr);
5706
5707 type = mono_metadata_parse_type_checked (image, NULL, 0, TRUE, ptr, &ptr, error);
5708 if (!type)
5709 return NULL;
5710
5711 type2 = mono_metadata_type_dup (image, type);
5712 mono_metadata_free_type (type);
5713
5714 mono_image_lock (image);
5715 type = (MonoType *)g_hash_table_lookup (image->typespec_cache, GUINT_TO_POINTER (type_spec));
5716 /* We might leak some data in the image mempool if found */
5717 if (!type) {
5718 g_hash_table_insert (image->typespec_cache, GUINT_TO_POINTER (type_spec), type2);
5719 type = type2;
5720 }
5721 mono_image_unlock (image);
5722
5723 return type;
5724 }
5725
5726
5727 static char*
5728 mono_image_strndup (MonoImage *image, const char *data, guint len)
5729 {
5730 char *res;
5731 if (!image)
5732 return g_strndup (data, len);
5733 res = (char *)mono_image_alloc (image, len + 1);
5734 memcpy (res, data, len);
5735 res [len] = 0;
5736 return res;
5737 }
5738
5739 MonoMarshalSpec *
5740 mono_metadata_parse_marshal_spec (MonoImage *image, const char *ptr)
5741 {
5742 return mono_metadata_parse_marshal_spec_full (NULL, image, ptr);
5743 }
5744
5745 /*
5746 * If IMAGE is non-null, memory will be allocated from its mempool, otherwise it will be allocated using malloc.
5747 * PARENT_IMAGE is the image containing the marshal spec.
5748 */
5749 MonoMarshalSpec *
5750 mono_metadata_parse_marshal_spec_full (MonoImage *image, MonoImage *parent_image, const char *ptr)
5751 {
5752 MonoMarshalSpec *res;
5753 int len;
5754 const char *start = ptr;
5755
5756 /* fixme: this is incomplete, but I cant find more infos in the specs */
5757
5758 if (image)
5759 res = (MonoMarshalSpec *)mono_image_alloc0 (image, sizeof (MonoMarshalSpec));
5760 else
5761 res = g_new0 (MonoMarshalSpec, 1);
5762
5763 len = mono_metadata_decode_value (ptr, &ptr);
5764 res->native = (MonoMarshalNative)*ptr++;
5765
5766 if (res->native == MONO_NATIVE_LPARRAY) {
5767 res->data.array_data.param_num = -1;
5768 res->data.array_data.num_elem = -1;
5769 res->data.array_data.elem_mult = -1;
5770
5771 if (ptr - start <= len)
5772 res->data.array_data.elem_type = (MonoMarshalNative)*ptr++;
5773 if (ptr - start <= len)
5774 res->data.array_data.param_num = mono_metadata_decode_value (ptr, &ptr);
5775 if (ptr - start <= len)
5776 res->data.array_data.num_elem = mono_metadata_decode_value (ptr, &ptr);
5777 if (ptr - start <= len) {
5778 /*
5779 * LAMESPEC: Older spec versions say this parameter comes before
5780 * num_elem. Never spec versions don't talk about elem_mult at
5781 * all, but csc still emits it, and it is used to distinguish
5782 * between param_num being 0, and param_num being omitted.
5783 * So if (param_num == 0) && (num_elem > 0), then
5784 * elem_mult == 0 -> the array size is num_elem
5785 * elem_mult == 1 -> the array size is @param_num + num_elem
5786 */
5787 res->data.array_data.elem_mult = mono_metadata_decode_value (ptr, &ptr);
5788 }
5789 }
5790
5791 if (res->native == MONO_NATIVE_BYVALTSTR) {
5792 if (ptr - start <= len)
5793 res->data.array_data.num_elem = mono_metadata_decode_value (ptr, &ptr);
5794 }
5795
5796 if (res->native == MONO_NATIVE_BYVALARRAY) {
5797 if (ptr - start <= len)
5798 res->data.array_data.num_elem = mono_metadata_decode_value (ptr, &ptr);
5799 }
5800
5801 if (res->native == MONO_NATIVE_CUSTOM) {
5802 /* skip unused type guid */
5803 len = mono_metadata_decode_value (ptr, &ptr);
5804 ptr += len;
5805 /* skip unused native type name */
5806 len = mono_metadata_decode_value (ptr, &ptr);
5807 ptr += len;
5808 /* read custom marshaler type name */
5809 len = mono_metadata_decode_value (ptr, &ptr);
5810 res->data.custom_data.custom_name = mono_image_strndup (image, ptr, len);
5811 ptr += len;
5812 /* read cookie string */
5813 len = mono_metadata_decode_value (ptr, &ptr);
5814 res->data.custom_data.cookie = mono_image_strndup (image, ptr, len);
5815 res->data.custom_data.image = parent_image;
5816 }
5817
5818 if (res->native == MONO_NATIVE_SAFEARRAY) {
5819 res->data.safearray_data.elem_type = (MonoMarshalVariant)0;
5820 res->data.safearray_data.num_elem = 0;
5821 if (ptr - start <= len)
5822 res->data.safearray_data.elem_type = (MonoMarshalVariant)*ptr++;
5823 if (ptr - start <= len)
5824 res->data.safearray_data.num_elem = *ptr++;
5825 }
5826 return res;
5827 }
5828
5829 void
5830 mono_metadata_free_marshal_spec (MonoMarshalSpec *spec)
5831 {
5832 if (spec->native == MONO_NATIVE_CUSTOM) {
5833 g_free (spec->data.custom_data.custom_name);
5834 g_free (spec->data.custom_data.cookie);
5835 }
5836 g_free (spec);
5837 }
5838
5839 /**
5840 * mono_type_to_unmanaged:
5841 *
5842 * Returns: A MonoMarshalNative enumeration value (MONO_NATIVE_) value
5843 * describing the underlying native reprensetation of the type.
5844 *
5845 * In addition the value pointed by
5846 * "conv" will contain the kind of marshalling required for this
5847 * particular type one of the MONO_MARSHAL_CONV_ enumeration values.
5848 */
5849 guint32
5850 mono_type_to_unmanaged (MonoType *type, MonoMarshalSpec *mspec, gboolean as_field,
5851 gboolean unicode, MonoMarshalConv *conv)
5852 {
5853 MonoMarshalConv dummy_conv;
5854 int t = type->type;
5855
5856 if (!conv)
5857 conv = &dummy_conv;
5858
5859 *conv = MONO_MARSHAL_CONV_NONE;
5860
5861 if (type->byref)
5862 return MONO_NATIVE_UINT;
5863
5864 handle_enum:
5865 switch (t) {
5866 case MONO_TYPE_BOOLEAN:
5867 if (mspec) {
5868 switch (mspec->native) {
5869 case MONO_NATIVE_VARIANTBOOL:
5870 *conv = MONO_MARSHAL_CONV_BOOL_VARIANTBOOL;
5871 return MONO_NATIVE_VARIANTBOOL;
5872 case MONO_NATIVE_BOOLEAN:
5873 *conv = MONO_MARSHAL_CONV_BOOL_I4;
5874 return MONO_NATIVE_BOOLEAN;
5875 case MONO_NATIVE_I1:
5876 case MONO_NATIVE_U1:
5877 return mspec->native;
5878 default:
5879 g_error ("cant marshal bool to native type %02x", mspec->native);
5880 }
5881 }
5882 *conv = MONO_MARSHAL_CONV_BOOL_I4;
5883 return MONO_NATIVE_BOOLEAN;
5884 case MONO_TYPE_CHAR:
5885 if (mspec) {
5886 switch (mspec->native) {
5887 case MONO_NATIVE_U2:
5888 case MONO_NATIVE_U1:
5889 return mspec->native;
5890 default:
5891 g_error ("cant marshal char to native type %02x", mspec->native);
5892 }
5893 }
5894 return unicode ? MONO_NATIVE_U2 : MONO_NATIVE_U1;
5895 case MONO_TYPE_I1: return MONO_NATIVE_I1;
5896 case MONO_TYPE_U1: return MONO_NATIVE_U1;
5897 case MONO_TYPE_I2: return MONO_NATIVE_I2;
5898 case MONO_TYPE_U2: return MONO_NATIVE_U2;
5899 case MONO_TYPE_I4: return MONO_NATIVE_I4;
5900 case MONO_TYPE_U4: return MONO_NATIVE_U4;
5901 case MONO_TYPE_I8: return MONO_NATIVE_I8;
5902 case MONO_TYPE_U8: return MONO_NATIVE_U8;
5903 case MONO_TYPE_R4: return MONO_NATIVE_R4;
5904 case MONO_TYPE_R8: return MONO_NATIVE_R8;
5905 case MONO_TYPE_STRING:
5906 if (mspec) {
5907 switch (mspec->native) {
5908 case MONO_NATIVE_BSTR:
5909 *conv = MONO_MARSHAL_CONV_STR_BSTR;
5910 return MONO_NATIVE_BSTR;
5911 case MONO_NATIVE_LPSTR:
5912 *conv = MONO_MARSHAL_CONV_STR_LPSTR;
5913 return MONO_NATIVE_LPSTR;
5914 case MONO_NATIVE_LPWSTR:
5915 *conv = MONO_MARSHAL_CONV_STR_LPWSTR;
5916 return MONO_NATIVE_LPWSTR;
5917 case MONO_NATIVE_LPTSTR:
5918 *conv = MONO_MARSHAL_CONV_STR_LPTSTR;
5919 return MONO_NATIVE_LPTSTR;
5920 case MONO_NATIVE_ANSIBSTR:
5921 *conv = MONO_MARSHAL_CONV_STR_ANSIBSTR;
5922 return MONO_NATIVE_ANSIBSTR;
5923 case MONO_NATIVE_TBSTR:
5924 *conv = MONO_MARSHAL_CONV_STR_TBSTR;
5925 return MONO_NATIVE_TBSTR;
5926 case MONO_NATIVE_UTF8STR:
5927 *conv = MONO_MARSHAL_CONV_STR_UTF8STR;
5928 return MONO_NATIVE_UTF8STR;
5929 case MONO_NATIVE_BYVALTSTR:
5930 if (unicode)
5931 *conv = MONO_MARSHAL_CONV_STR_BYVALWSTR;
5932 else
5933 *conv = MONO_MARSHAL_CONV_STR_BYVALSTR;
5934 return MONO_NATIVE_BYVALTSTR;
5935 default:
5936 g_error ("Can not marshal string to native type '%02x': Invalid managed/unmanaged type combination (String fields must be paired with LPStr, LPWStr, BStr or ByValTStr).", mspec->native);
5937 }
5938 }
5939 if (unicode) {
5940 *conv = MONO_MARSHAL_CONV_STR_LPWSTR;
5941 return MONO_NATIVE_LPWSTR;
5942 }
5943 else {
5944 *conv = MONO_MARSHAL_CONV_STR_LPSTR;
5945 return MONO_NATIVE_LPSTR;
5946 }
5947 case MONO_TYPE_PTR: return MONO_NATIVE_UINT;
5948 case MONO_TYPE_VALUETYPE: /*FIXME*/
5949 if (type->data.klass->enumtype) {
5950 t = mono_class_enum_basetype (type->data.klass)->type;
5951 goto handle_enum;
5952 }
5953 if (type->data.klass == mono_defaults.handleref_class){
5954 *conv = MONO_MARSHAL_CONV_HANDLEREF;
5955 return MONO_NATIVE_INT;
5956 }
5957 return MONO_NATIVE_STRUCT;
5958 case MONO_TYPE_SZARRAY:
5959 case MONO_TYPE_ARRAY:
5960 if (mspec) {
5961 switch (mspec->native) {
5962 case MONO_NATIVE_BYVALARRAY:
5963 if ((type->data.klass->element_class == mono_defaults.char_class) && !unicode)
5964 *conv = MONO_MARSHAL_CONV_ARRAY_BYVALCHARARRAY;
5965 else
5966 *conv = MONO_MARSHAL_CONV_ARRAY_BYVALARRAY;
5967 return MONO_NATIVE_BYVALARRAY;
5968 case MONO_NATIVE_SAFEARRAY:
5969 *conv = MONO_MARSHAL_CONV_ARRAY_SAVEARRAY;
5970 return MONO_NATIVE_SAFEARRAY;
5971 case MONO_NATIVE_LPARRAY:
5972 *conv = MONO_MARSHAL_CONV_ARRAY_LPARRAY;
5973 return MONO_NATIVE_LPARRAY;
5974 default:
5975 g_error ("cant marshal array as native type %02x", mspec->native);
5976 }
5977 }
5978
5979 *conv = MONO_MARSHAL_CONV_ARRAY_LPARRAY;
5980 return MONO_NATIVE_LPARRAY;
5981 case MONO_TYPE_I: return MONO_NATIVE_INT;
5982 case MONO_TYPE_U: return MONO_NATIVE_UINT;
5983 case MONO_TYPE_CLASS:
5984 case MONO_TYPE_OBJECT: {
5985 /* FIXME : we need to handle ArrayList and StringBuilder here, probably */
5986 if (mspec) {
5987 switch (mspec->native) {
5988 case MONO_NATIVE_STRUCT:
5989 return MONO_NATIVE_STRUCT;
5990 case MONO_NATIVE_CUSTOM:
5991 return MONO_NATIVE_CUSTOM;
5992 case MONO_NATIVE_INTERFACE:
5993 *conv = MONO_MARSHAL_CONV_OBJECT_INTERFACE;
5994 return MONO_NATIVE_INTERFACE;
5995 case MONO_NATIVE_IDISPATCH:
5996 *conv = MONO_MARSHAL_CONV_OBJECT_IDISPATCH;
5997 return MONO_NATIVE_IDISPATCH;
5998 case MONO_NATIVE_IUNKNOWN:
5999 *conv = MONO_MARSHAL_CONV_OBJECT_IUNKNOWN;
6000 return MONO_NATIVE_IUNKNOWN;
6001 case MONO_NATIVE_FUNC:
6002 if (t == MONO_TYPE_CLASS && (type->data.klass == mono_defaults.multicastdelegate_class ||
6003 type->data.klass == mono_defaults.delegate_class ||
6004 type->data.klass->parent == mono_defaults.multicastdelegate_class)) {
6005 *conv = MONO_MARSHAL_CONV_DEL_FTN;
6006 return MONO_NATIVE_FUNC;
6007 }
6008 /* Fall through */
6009 default:
6010 g_error ("cant marshal object as native type %02x", mspec->native);
6011 }
6012 }
6013 if (t == MONO_TYPE_CLASS && (type->data.klass == mono_defaults.multicastdelegate_class ||
6014 type->data.klass == mono_defaults.delegate_class ||
6015 type->data.klass->parent == mono_defaults.multicastdelegate_class)) {
6016 *conv = MONO_MARSHAL_CONV_DEL_FTN;
6017 return MONO_NATIVE_FUNC;
6018 }
6019 if (mono_class_try_get_safehandle_class () && type->data.klass == mono_class_try_get_safehandle_class ()){
6020 *conv = MONO_MARSHAL_CONV_SAFEHANDLE;
6021 return MONO_NATIVE_INT;
6022 }
6023 *conv = MONO_MARSHAL_CONV_OBJECT_STRUCT;
6024 return MONO_NATIVE_STRUCT;
6025 }
6026 case MONO_TYPE_FNPTR: return MONO_NATIVE_FUNC;
6027 case MONO_TYPE_GENERICINST:
6028 type = &type->data.generic_class->container_class->byval_arg;
6029 t = type->type;
6030 goto handle_enum;
6031 case MONO_TYPE_TYPEDBYREF:
6032 default:
6033 g_error ("type 0x%02x not handled in marshal", t);
6034 }
6035 return MONO_NATIVE_MAX;
6036 }
6037
6038 const char*
6039 mono_metadata_get_marshal_info (MonoImage *meta, guint32 idx, gboolean is_field)
6040 {
6041 locator_t loc;
6042 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_FIELDMARSHAL];
6043
6044 if (!tdef->base)
6045 return NULL;
6046
6047 loc.t = tdef;
6048 loc.col_idx = MONO_FIELD_MARSHAL_PARENT;
6049 loc.idx = ((idx + 1) << MONO_HAS_FIELD_MARSHAL_BITS) | (is_field? MONO_HAS_FIELD_MARSHAL_FIELDSREF: MONO_HAS_FIELD_MARSHAL_PARAMDEF);
6050
6051 /* FIXME: Index translation */
6052
6053 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
6054 return NULL;
6055
6056 return mono_metadata_blob_heap (meta, mono_metadata_decode_row_col (tdef, loc.result, MONO_FIELD_MARSHAL_NATIVE_TYPE));
6057 }
6058
6059 MonoMethod*
6060 method_from_method_def_or_ref (MonoImage *m, guint32 tok, MonoGenericContext *context, MonoError *error)
6061 {
6062 MonoMethod *result = NULL;
6063 guint32 idx = tok >> MONO_METHODDEFORREF_BITS;
6064
6065 mono_error_init (error);
6066
6067 switch (tok & MONO_METHODDEFORREF_MASK) {
6068 case MONO_METHODDEFORREF_METHODDEF:
6069 result = mono_get_method_checked (m, MONO_TOKEN_METHOD_DEF | idx, NULL, context, error);
6070 break;
6071 case MONO_METHODDEFORREF_METHODREF:
6072 result = mono_get_method_checked (m, MONO_TOKEN_MEMBER_REF | idx, NULL, context, error);
6073 break;
6074 default:
6075 mono_error_set_bad_image (error, m, "Invalid MethodDefOfRef token %x", tok);
6076 }
6077
6078 return result;
6079 }
6080
6081 /*
6082 * mono_class_get_overrides_full:
6083 *
6084 * Return the method overrides belonging to class @type_token in @overrides, and
6085 * the number of overrides in @num_overrides.
6086 *
6087 * Returns: TRUE on success, FALSE on failure.
6088 */
6089 gboolean
6090 mono_class_get_overrides_full (MonoImage *image, guint32 type_token, MonoMethod ***overrides, gint32 *num_overrides,
6091 MonoGenericContext *generic_context)
6092 {
6093 MonoError error;
6094 locator_t loc;
6095 MonoTableInfo *tdef = &image->tables [MONO_TABLE_METHODIMPL];
6096 guint32 start, end;
6097 gint32 i, num;
6098 guint32 cols [MONO_METHODIMPL_SIZE];
6099 MonoMethod **result;
6100 gint32 ok = TRUE;
6101
6102 *overrides = NULL;
6103 if (num_overrides)
6104 *num_overrides = 0;
6105
6106 if (!tdef->base)
6107 return TRUE;
6108
6109 loc.t = tdef;
6110 loc.col_idx = MONO_METHODIMPL_CLASS;
6111 loc.idx = mono_metadata_token_index (type_token);
6112
6113 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
6114 return TRUE;
6115
6116 start = loc.result;
6117 end = start + 1;
6118 /*
6119 * We may end up in the middle of the rows...
6120 */
6121 while (start > 0) {
6122 if (loc.idx == mono_metadata_decode_row_col (tdef, start - 1, MONO_METHODIMPL_CLASS))
6123 start--;
6124 else
6125 break;
6126 }
6127 while (end < tdef->rows) {
6128 if (loc.idx == mono_metadata_decode_row_col (tdef, end, MONO_METHODIMPL_CLASS))
6129 end++;
6130 else
6131 break;
6132 }
6133 num = end - start;
6134 result = g_new (MonoMethod*, num * 2);
6135 for (i = 0; i < num; ++i) {
6136 MonoMethod *method;
6137
6138 if (!mono_verifier_verify_methodimpl_row (image, start + i, &error)) {
6139 mono_error_cleanup (&error); /* FIXME don't swallow the error */
6140 ok = FALSE;
6141 break;
6142 }
6143
6144 mono_metadata_decode_row (tdef, start + i, cols, MONO_METHODIMPL_SIZE);
6145 method = method_from_method_def_or_ref (
6146 image, cols [MONO_METHODIMPL_DECLARATION], generic_context, &error);
6147 if (method == NULL) {
6148 mono_error_cleanup (&error); /* FIXME don't swallow the error */
6149 ok = FALSE;
6150 }
6151 result [i * 2] = method;
6152 method = method_from_method_def_or_ref (
6153 image, cols [MONO_METHODIMPL_BODY], generic_context, &error);
6154 if (method == NULL) {
6155 mono_error_cleanup (&error); /* FIXME don't swallow the error */
6156 ok = FALSE;
6157 }
6158 result [i * 2 + 1] = method;
6159 }
6160
6161 *overrides = result;
6162 if (num_overrides)
6163 *num_overrides = num;
6164 return ok;
6165 }
6166
6167 /**
6168 * mono_guid_to_string:
6169 *
6170 * Converts a 16 byte Microsoft GUID to the standard string representation.
6171 */
6172 char *
6173 mono_guid_to_string (const guint8 *guid)
6174 {
6175 return g_strdup_printf ("%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
6176 guid[3], guid[2], guid[1], guid[0],
6177 guid[5], guid[4],
6178 guid[7], guid[6],
6179 guid[8], guid[9],
6180 guid[10], guid[11], guid[12], guid[13], guid[14], guid[15]);
6181 }
6182
6183 /**
6184 * mono_guid_to_string_minimal:
6185 *
6186 * Converts a 16 byte Microsoft GUID to lower case no '-' representation..
6187 */
6188 char *
6189 mono_guid_to_string_minimal (const guint8 *guid)
6190 {
6191 return g_strdup_printf ("%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
6192 guid[3], guid[2], guid[1], guid[0],
6193 guid[5], guid[4],
6194 guid[7], guid[6],
6195 guid[8], guid[9],
6196 guid[10], guid[11], guid[12], guid[13], guid[14], guid[15]);
6197 }
6198 static gboolean
6199 get_constraints (MonoImage *image, int owner, MonoClass ***constraints, MonoGenericContainer *container, MonoError *error)
6200 {
6201 MonoTableInfo *tdef = &image->tables [MONO_TABLE_GENERICPARAMCONSTRAINT];
6202 guint32 cols [MONO_GENPARCONSTRAINT_SIZE];
6203 guint32 i, token, found;
6204 MonoClass *klass, **res;
6205 GSList *cons = NULL, *tmp;
6206 MonoGenericContext *context = &container->context;
6207
6208 mono_error_init (error);
6209
6210 *constraints = NULL;
6211 found = 0;
6212 for (i = 0; i < tdef->rows; ++i) {
6213 mono_metadata_decode_row (tdef, i, cols, MONO_GENPARCONSTRAINT_SIZE);
6214 if (cols [MONO_GENPARCONSTRAINT_GENERICPAR] == owner) {
6215 token = mono_metadata_token_from_dor (cols [MONO_GENPARCONSTRAINT_CONSTRAINT]);
6216 klass = mono_class_get_and_inflate_typespec_checked (image, token, context, error);
6217 if (!klass) {
6218 g_slist_free (cons);
6219 return FALSE;
6220 }
6221 cons = g_slist_append (cons, klass);
6222 ++found;
6223 } else {
6224 /* contiguous list finished */
6225 if (found)
6226 break;
6227 }
6228 }
6229 if (!found)
6230 return TRUE;
6231 res = (MonoClass **)mono_image_alloc0 (image, sizeof (MonoClass*) * (found + 1));
6232 for (i = 0, tmp = cons; i < found; ++i, tmp = tmp->next) {
6233 res [i] = (MonoClass *)tmp->data;
6234 }
6235 g_slist_free (cons);
6236 *constraints = res;
6237 return TRUE;
6238 }
6239
6240 /*
6241 * mono_metadata_get_generic_param_row:
6242 *
6243 * @image:
6244 * @token: TypeOrMethodDef token, owner for GenericParam
6245 * @owner: coded token, set on return
6246 *
6247 * Returns: 1-based row-id in the GenericParam table whose
6248 * owner is @token. 0 if not found.
6249 */
6250 guint32
6251 mono_metadata_get_generic_param_row (MonoImage *image, guint32 token, guint32 *owner)
6252 {
6253 MonoTableInfo *tdef = &image->tables [MONO_TABLE_GENERICPARAM];
6254 locator_t loc;
6255
6256 g_assert (owner);
6257 if (!tdef->base)
6258 return 0;
6259
6260 if (mono_metadata_token_table (token) == MONO_TABLE_TYPEDEF)
6261 *owner = MONO_TYPEORMETHOD_TYPE;
6262 else if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
6263 *owner = MONO_TYPEORMETHOD_METHOD;
6264 else {
6265 g_error ("wrong token %x to get_generic_param_row", token);
6266 return 0;
6267 }
6268 *owner |= mono_metadata_token_index (token) << MONO_TYPEORMETHOD_BITS;
6269
6270 loc.idx = *owner;
6271 loc.col_idx = MONO_GENERICPARAM_OWNER;
6272 loc.t = tdef;
6273
6274 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
6275 return 0;
6276
6277 /* Find the first entry by searching backwards */
6278 while ((loc.result > 0) && (mono_metadata_decode_row_col (tdef, loc.result - 1, MONO_GENERICPARAM_OWNER) == loc.idx))
6279 loc.result --;
6280
6281 return loc.result + 1;
6282 }
6283
6284 gboolean
6285 mono_metadata_has_generic_params (MonoImage *image, guint32 token)
6286 {
6287 guint32 owner;
6288 return mono_metadata_get_generic_param_row (image, token, &owner);
6289 }
6290
6291 /*
6292 * Memory is allocated from IMAGE's mempool.
6293 */
6294 gboolean
6295 mono_metadata_load_generic_param_constraints_checked (MonoImage *image, guint32 token,
6296 MonoGenericContainer *container, MonoError *error)
6297 {
6298
6299 guint32 start_row, i, owner;
6300 mono_error_init (error);
6301
6302 if (! (start_row = mono_metadata_get_generic_param_row (image, token, &owner)))
6303 return TRUE;
6304 for (i = 0; i < container->type_argc; i++) {
6305 if (!get_constraints (image, start_row + i, &mono_generic_container_get_param_info (container, i)->constraints, container, error)) {
6306 return FALSE;
6307 }
6308 }
6309 return TRUE;
6310 }
6311
6312 /*
6313 * mono_metadata_load_generic_params:
6314 *
6315 * Load the type parameters from the type or method definition @token.
6316 *
6317 * Use this method after parsing a type or method definition to figure out whether it's a generic
6318 * type / method. When parsing a method definition, @parent_container points to the generic container
6319 * of the current class, if any.
6320 *
6321 * Note: This method does not load the constraints: for typedefs, this has to be done after fully
6322 * creating the type.
6323 *
6324 * Returns: NULL if @token is not a generic type or method definition or the new generic container.
6325 *
6326 * LOCKING: Acquires the loader lock
6327 *
6328 */
6329 MonoGenericContainer *
6330 mono_metadata_load_generic_params (MonoImage *image, guint32 token, MonoGenericContainer *parent_container)
6331 {
6332 MonoTableInfo *tdef = &image->tables [MONO_TABLE_GENERICPARAM];
6333 guint32 cols [MONO_GENERICPARAM_SIZE];
6334 guint32 i, owner = 0, n;
6335 MonoGenericContainer *container;
6336 MonoGenericParamFull *params;
6337 MonoGenericContext *context;
6338
6339 if (!(i = mono_metadata_get_generic_param_row (image, token, &owner)))
6340 return NULL;
6341 mono_metadata_decode_row (tdef, i - 1, cols, MONO_GENERICPARAM_SIZE);
6342 params = NULL;
6343 n = 0;
6344 container = (MonoGenericContainer *)mono_image_alloc0 (image, sizeof (MonoGenericContainer));
6345 container->owner.image = image; // Temporarily mark as anonymous, but this will be overriden by caller
6346 container->is_anonymous = TRUE;
6347 do {
6348 n++;
6349 params = (MonoGenericParamFull *)g_realloc (params, sizeof (MonoGenericParamFull) * n);
6350 memset (&params [n - 1], 0, sizeof (MonoGenericParamFull));
6351 params [n - 1].param.owner = container;
6352 params [n - 1].param.num = cols [MONO_GENERICPARAM_NUMBER];
6353 params [n - 1].info.token = i | MONO_TOKEN_GENERIC_PARAM;
6354 params [n - 1].info.flags = cols [MONO_GENERICPARAM_FLAGS];
6355 params [n - 1].info.name = mono_metadata_string_heap (image, cols [MONO_GENERICPARAM_NAME]);
6356 if (params [n - 1].param.num != n - 1)
6357 g_warning ("GenericParam table unsorted or hole in generic param sequence: token %d", i);
6358 if (++i > tdef->rows)
6359 break;
6360 mono_metadata_decode_row (tdef, i - 1, cols, MONO_GENERICPARAM_SIZE);
6361 } while (cols [MONO_GENERICPARAM_OWNER] == owner);
6362
6363 container->type_argc = n;
6364 container->type_params = (MonoGenericParamFull *)mono_image_alloc0 (image, sizeof (MonoGenericParamFull) * n);
6365 memcpy (container->type_params, params, sizeof (MonoGenericParamFull) * n);
6366 g_free (params);
6367 container->parent = parent_container;
6368
6369 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
6370 container->is_method = 1;
6371
6372 g_assert (container->parent == NULL || container->is_method);
6373
6374 context = &container->context;
6375 if (container->is_method) {
6376 context->class_inst = container->parent ? container->parent->context.class_inst : NULL;
6377 context->method_inst = mono_get_shared_generic_inst (container);
6378 } else {
6379 context->class_inst = mono_get_shared_generic_inst (container);
6380 }
6381
6382 return container;
6383 }
6384
6385 MonoGenericInst *
6386 mono_get_shared_generic_inst (MonoGenericContainer *container)
6387 {
6388 MonoType **type_argv;
6389 MonoType *helper;
6390 MonoGenericInst *nginst;
6391 int i;
6392
6393 type_argv = g_new0 (MonoType *, container->type_argc);
6394 helper = g_new0 (MonoType, container->type_argc);
6395
6396 for (i = 0; i < container->type_argc; i++) {
6397 MonoType *t = &helper [i];
6398
6399 t->type = container->is_method ? MONO_TYPE_MVAR : MONO_TYPE_VAR;
6400 t->data.generic_param = mono_generic_container_get_param (container, i);
6401
6402 type_argv [i] = t;
6403 }
6404
6405 nginst = mono_metadata_get_generic_inst (container->type_argc, type_argv);
6406
6407 g_free (type_argv);
6408 g_free (helper);
6409
6410 return nginst;
6411 }
6412
6413 /**
6414 * mono_type_is_byref:
6415 * @type: the MonoType operated on
6416 *
6417 * Returns: #TRUE if @type represents a type passed by reference,
6418 * #FALSE otherwise.
6419 */
6420 gboolean
6421 mono_type_is_byref (MonoType *type)
6422 {
6423 return type->byref;
6424 }
6425
6426 /**
6427 * mono_type_get_type:
6428 * @type: the MonoType operated on
6429 *
6430 * Returns: the IL type value for @type. This is one of the MonoTypeEnum
6431 * enum members like MONO_TYPE_I4 or MONO_TYPE_STRING.
6432 */
6433 int
6434 mono_type_get_type (MonoType *type)
6435 {
6436 return type->type;
6437 }
6438
6439 /**
6440 * mono_type_get_signature:
6441 * @type: the MonoType operated on
6442 *
6443 * It is only valid to call this function if @type is a MONO_TYPE_FNPTR.
6444 *
6445 * Returns: the MonoMethodSignature pointer that describes the signature
6446 * of the function pointer @type represents.
6447 */
6448 MonoMethodSignature*
6449 mono_type_get_signature (MonoType *type)
6450 {
6451 g_assert (type->type == MONO_TYPE_FNPTR);
6452 return type->data.method;
6453 }
6454
6455 /**
6456 * mono_type_get_class:
6457 * @type: the MonoType operated on
6458 *
6459 * It is only valid to call this function if @type is a MONO_TYPE_CLASS or a
6460 * MONO_TYPE_VALUETYPE. For more general functionality, use mono_class_from_mono_type (),
6461 * instead
6462 *
6463 * Returns: the MonoClass pointer that describes the class that @type represents.
6464 */
6465 MonoClass*
6466 mono_type_get_class (MonoType *type)
6467 {
6468 /* FIXME: review the runtime users before adding the assert here */
6469 return type->data.klass;
6470 }
6471
6472 /**
6473 * mono_type_get_array_type:
6474 * @type: the MonoType operated on
6475 *
6476 * It is only valid to call this function if @type is a MONO_TYPE_ARRAY.
6477 *
6478 * Returns: a MonoArrayType struct describing the array type that @type
6479 * represents. The info includes details such as rank, array element type
6480 * and the sizes and bounds of multidimensional arrays.
6481 */
6482 MonoArrayType*
6483 mono_type_get_array_type (MonoType *type)
6484 {
6485 return type->data.array;
6486 }
6487
6488 /**
6489 * mono_type_get_ptr_type:
6490 * @type: the MonoType operated on
6491 *
6492 * It is only valid to call this function if @type is a MONO_TYPE_PTR.
6493 * instead
6494 *
6495 * Returns: the MonoType pointer that describes the type that @type
6496 * represents a pointer to.
6497 */
6498 MonoType*
6499 mono_type_get_ptr_type (MonoType *type)
6500 {
6501 g_assert (type->type == MONO_TYPE_PTR);
6502 return type->data.type;
6503 }
6504
6505 MonoClass*
6506 mono_type_get_modifiers (MonoType *type, gboolean *is_required, gpointer *iter)
6507 {
6508 /* FIXME: implement */
6509 return NULL;
6510 }
6511
6512 /**
6513 * mono_type_is_struct:
6514 * @type: the MonoType operated on
6515 *
6516 * Returns: #TRUE is @type is a struct, that is a ValueType but not en enum
6517 * or a basic type like System.Int32. #FALSE otherwise.
6518 */
6519 mono_bool
6520 mono_type_is_struct (MonoType *type)
6521 {
6522 return (!type->byref && ((type->type == MONO_TYPE_VALUETYPE &&
6523 !type->data.klass->enumtype) || (type->type == MONO_TYPE_TYPEDBYREF) ||
6524 ((type->type == MONO_TYPE_GENERICINST) &&
6525 mono_metadata_generic_class_is_valuetype (type->data.generic_class) &&
6526 !type->data.generic_class->container_class->enumtype)));
6527 }
6528
6529 /**
6530 * mono_type_is_void:
6531 * @type: the MonoType operated on
6532 *
6533 * Returns: #TRUE is @type is System.Void. #FALSE otherwise.
6534 */
6535 mono_bool
6536 mono_type_is_void (MonoType *type)
6537 {
6538 return (type && (type->type == MONO_TYPE_VOID) && !type->byref);
6539 }
6540
6541 /**
6542 * mono_type_is_pointer:
6543 * @type: the MonoType operated on
6544 *
6545 * Returns: #TRUE is @type is a managed or unmanaged pointer type. #FALSE otherwise.
6546 */
6547 mono_bool
6548 mono_type_is_pointer (MonoType *type)
6549 {
6550 return (type && ((type->byref || (type->type == MONO_TYPE_I) || type->type == MONO_TYPE_STRING)
6551 || (type->type == MONO_TYPE_SZARRAY) || (type->type == MONO_TYPE_CLASS) ||
6552 (type->type == MONO_TYPE_U) || (type->type == MONO_TYPE_OBJECT) ||
6553 (type->type == MONO_TYPE_ARRAY) || (type->type == MONO_TYPE_PTR) ||
6554 (type->type == MONO_TYPE_FNPTR)));
6555 }
6556
6557 /**
6558 * mono_type_is_reference:
6559 * @type: the MonoType operated on
6560 *
6561 * Returns: #TRUE is @type represents an object reference . #FALSE otherwise.
6562 */
6563 mono_bool
6564 mono_type_is_reference (MonoType *type)
6565 {
6566 return (type && (((type->type == MONO_TYPE_STRING) ||
6567 (type->type == MONO_TYPE_SZARRAY) || (type->type == MONO_TYPE_CLASS) ||
6568 (type->type == MONO_TYPE_OBJECT) || (type->type == MONO_TYPE_ARRAY)) ||
6569 ((type->type == MONO_TYPE_GENERICINST) &&
6570 !mono_metadata_generic_class_is_valuetype (type->data.generic_class))));
6571 }
6572
6573 mono_bool
6574 mono_type_is_generic_parameter (MonoType *type)
6575 {
6576 return !type->byref && (type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR);
6577 }
6578
6579 /**
6580 * mono_signature_get_return_type:
6581 * @sig: the method signature inspected
6582 *
6583 * Returns: the return type of the method signature @sig
6584 */
6585 MonoType*
6586 mono_signature_get_return_type (MonoMethodSignature *sig)
6587 {
6588 return sig->ret;
6589 }
6590
6591 /**
6592 * mono_signature_get_params:
6593 * @sig: the method signature inspected
6594 * #iter: pointer to an iterator
6595 *
6596 * Iterates over the parameters for the method signature @sig.
6597 * A void* pointer must be initualized to #NULL to start the iteration
6598 * and it's address is passed to this function repeteadly until it returns
6599 * #NULL.
6600 *
6601 * Returns: the next parameter type of the method signature @sig,
6602 * #NULL when finished.
6603 */
6604 MonoType*
6605 mono_signature_get_params (MonoMethodSignature *sig, gpointer *iter)
6606 {
6607 MonoType** type;
6608 if (!iter)
6609 return NULL;
6610 if (!*iter) {
6611 /* start from the first */
6612 if (sig->param_count) {
6613 *iter = &sig->params [0];
6614 return sig->params [0];
6615 } else {
6616 /* no method */
6617 return NULL;
6618 }
6619 }
6620 type = (MonoType **)*iter;
6621 type++;
6622 if (type < &sig->params [sig->param_count]) {
6623 *iter = type;
6624 return *type;
6625 }
6626 return NULL;
6627 }
6628
6629 /**
6630 * mono_signature_get_param_count:
6631 * @sig: the method signature inspected
6632 *
6633 * Returns: the number of parameters in the method signature @sig.
6634 */
6635 guint32
6636 mono_signature_get_param_count (MonoMethodSignature *sig)
6637 {
6638 return sig->param_count;
6639 }
6640
6641 /**
6642 * mono_signature_get_call_conv:
6643 * @sig: the method signature inspected
6644 *
6645 * Returns: the call convention of the method signature @sig.
6646 */
6647 guint32
6648 mono_signature_get_call_conv (MonoMethodSignature *sig)
6649 {
6650 return sig->call_convention;
6651 }
6652
6653 /**
6654 * mono_signature_vararg_start:
6655 * @sig: the method signature inspected
6656 *
6657 * Returns: the number of the first vararg parameter in the
6658 * method signature @sig. -1 if this is not a vararg signature.
6659 */
6660 int
6661 mono_signature_vararg_start (MonoMethodSignature *sig)
6662 {
6663 return sig->sentinelpos;
6664 }
6665
6666 /**
6667 * mono_signature_is_instance:
6668 * @sig: the method signature inspected
6669 *
6670 * Returns: #TRUE if this the method signature @sig has an implicit
6671 * first instance argument. #FALSE otherwise.
6672 */
6673 gboolean
6674 mono_signature_is_instance (MonoMethodSignature *sig)
6675 {
6676 return sig->hasthis;
6677 }
6678
6679 /**
6680 * mono_signature_param_is_out
6681 * @sig: the method signature inspected
6682 * @param_num: the 0-based index of the inspected parameter
6683 *
6684 * Returns: #TRUE if the parameter is an out parameter, #FALSE
6685 * otherwise.
6686 */
6687 mono_bool
6688 mono_signature_param_is_out (MonoMethodSignature *sig, int param_num)
6689 {
6690 g_assert (param_num >= 0 && param_num < sig->param_count);
6691 return (sig->params [param_num]->attrs & PARAM_ATTRIBUTE_OUT) != 0;
6692 }
6693
6694 /**
6695 * mono_signature_explicit_this:
6696 * @sig: the method signature inspected
6697 *
6698 * Returns: #TRUE if this the method signature @sig has an explicit
6699 * instance argument. #FALSE otherwise.
6700 */
6701 gboolean
6702 mono_signature_explicit_this (MonoMethodSignature *sig)
6703 {
6704 return sig->explicit_this;
6705 }
6706
6707 /* for use with allocated memory blocks (assumes alignment is to 8 bytes) */
6708 guint
6709 mono_aligned_addr_hash (gconstpointer ptr)
6710 {
6711 return GPOINTER_TO_UINT (ptr) >> 3;
6712 }
6713
6714 /*
6715 * If @field belongs to an inflated generic class, return the corresponding field of the
6716 * generic type definition class.
6717 */
6718 MonoClassField*
6719 mono_metadata_get_corresponding_field_from_generic_type_definition (MonoClassField *field)
6720 {
6721 MonoClass *gtd;
6722 int offset;
6723
6724 if (!mono_class_is_ginst (field->parent))
6725 return field;
6726
6727 gtd = mono_class_get_generic_class (field->parent)->container_class;
6728 offset = field - field->parent->fields;
6729 return gtd->fields + offset;
6730 }
6731
6732 /*
6733 * If @event belongs to an inflated generic class, return the corresponding event of the
6734 * generic type definition class.
6735 */
6736 MonoEvent*
6737 mono_metadata_get_corresponding_event_from_generic_type_definition (MonoEvent *event)
6738 {
6739 MonoClass *gtd;
6740 int offset;
6741
6742 if (!mono_class_is_ginst (event->parent))
6743 return event;
6744
6745 gtd = mono_class_get_generic_class (event->parent)->container_class;
6746 offset = event - mono_class_get_event_info (event->parent)->events;
6747 return mono_class_get_event_info (gtd)->events + offset;
6748 }
6749
6750 /*
6751 * If @property belongs to an inflated generic class, return the corresponding property of the
6752 * generic type definition class.
6753 */
6754 MonoProperty*
6755 mono_metadata_get_corresponding_property_from_generic_type_definition (MonoProperty *property)
6756 {
6757 MonoClassPropertyInfo *info;
6758 MonoClass *gtd;
6759 int offset;
6760
6761 if (!mono_class_is_ginst (property->parent))
6762 return property;
6763
6764 info = mono_class_get_property_info (property->parent);
6765 gtd = mono_class_get_generic_class (property->parent)->container_class;
6766 offset = property - info->properties;
6767 return mono_class_get_property_info (gtd)->properties + offset;
6768 }
6769
6770 MonoWrapperCaches*
6771 mono_method_get_wrapper_cache (MonoMethod *method)
6772 {
6773 if (method->is_inflated) {
6774 MonoMethodInflated *imethod = (MonoMethodInflated *)method;
6775 return &imethod->owner->wrapper_caches;
6776 } else {
6777 return &method->klass->image->wrapper_caches;
6778 }
6779 }
6780
6781 // This is support for the mempool reference tracking feature in checked-build, but lives in metadata.c due to use of static variables of this file.
6782
6783 /**
6784 * mono_find_image_set_owner:
6785 *
6786 * Find the imageset, if any, which a given pointer is located in the memory of.
6787 */
6788 MonoImageSet *
6789 mono_find_image_set_owner (void *ptr)
6790 {
6791 MonoImageSet *owner = NULL;
6792 int i;
6793
6794 image_sets_lock ();
6795
6796 if (image_sets)
6797 {
6798 for (i = 0; !owner && i < image_sets->len; ++i) {
6799 MonoImageSet *set = (MonoImageSet *)g_ptr_array_index (image_sets, i);
6800 if (mono_mempool_contains_addr (set->mempool, ptr))
6801 owner = set;
6802 }
6803 }
6804
6805 image_sets_unlock ();
6806
6807 return owner;
6808 }
Mirror of the official Mono project git repository