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[runtime] Introduce the usage of mono_class_get_checked in most of the runtime.
[mono-project.git] / mono / metadata / metadata.c
blob2064e356974c36acca286998ff61f0c7a8aa924e
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 */
11
12 #include <config.h>
13 #include <stdio.h>
14 #include <stdlib.h>
15 #include <string.h>
16 #include <glib.h>
17 #include "metadata.h"
18 #include "tabledefs.h"
19 #include "mono-endian.h"
20 #include "cil-coff.h"
21 #include "tokentype.h"
22 #include "metadata-internals.h"
23 #include "class-internals.h"
24 #include "verify-internals.h"
25 #include "class.h"
26 #include "marshal.h"
27 #include "debug-helpers.h"
28 #include "abi-details.h"
29 #include <mono/utils/mono-error-internals.h>
30 #include <mono/utils/bsearch.h>
31
32 /* Auxiliary structure used for caching inflated signatures */
33 typedef struct {
34 MonoMethodSignature *sig;
35 MonoGenericContext context;
36 } MonoInflatedMethodSignature;
37
38 static gboolean do_mono_metadata_parse_type (MonoType *type, MonoImage *m, MonoGenericContainer *container, gboolean transient,
39 const char *ptr, const char **rptr);
40
41 static gboolean do_mono_metadata_type_equal (MonoType *t1, MonoType *t2, gboolean signature_only);
42 static gboolean mono_metadata_class_equal (MonoClass *c1, MonoClass *c2, gboolean signature_only);
43 static gboolean mono_metadata_fnptr_equal (MonoMethodSignature *s1, MonoMethodSignature *s2, gboolean signature_only);
44 static gboolean _mono_metadata_generic_class_equal (const MonoGenericClass *g1, const MonoGenericClass *g2,
45 gboolean signature_only);
46 static void free_generic_inst (MonoGenericInst *ginst);
47 static void free_generic_class (MonoGenericClass *ginst);
48 static void free_inflated_method (MonoMethodInflated *method);
49 static void free_inflated_signature (MonoInflatedMethodSignature *sig);
50 static void mono_metadata_field_info_full (MonoImage *meta, guint32 index, guint32 *offset, guint32 *rva, MonoMarshalSpec **marshal_spec, gboolean alloc_from_image);
51 static guint mono_metadata_generic_param_hash (MonoGenericParam *p);
52
53 /*
54 * This enumeration is used to describe the data types in the metadata
55 * tables
56 */
57 enum {
58 MONO_MT_END,
59
60 /* Sized elements */
61 MONO_MT_UINT32,
62 MONO_MT_UINT16,
63 MONO_MT_UINT8,
64
65 /* Index into Blob heap */
66 MONO_MT_BLOB_IDX,
67
68 /* Index into String heap */
69 MONO_MT_STRING_IDX,
70
71 /* GUID index */
72 MONO_MT_GUID_IDX,
73
74 /* Pointer into a table */
75 MONO_MT_TABLE_IDX,
76
77 /* HasConstant:Parent pointer (Param, Field or Property) */
78 MONO_MT_CONST_IDX,
79
80 /* HasCustomAttribute index. Indexes any table except CustomAttribute */
81 MONO_MT_HASCAT_IDX,
82
83 /* CustomAttributeType encoded index */
84 MONO_MT_CAT_IDX,
85
86 /* HasDeclSecurity index: TypeDef Method or Assembly */
87 MONO_MT_HASDEC_IDX,
88
89 /* Implementation coded index: File, Export AssemblyRef */
90 MONO_MT_IMPL_IDX,
91
92 /* HasFieldMarshal coded index: Field or Param table */
93 MONO_MT_HFM_IDX,
94
95 /* MemberForwardedIndex: Field or Method */
96 MONO_MT_MF_IDX,
97
98 /* TypeDefOrRef coded index: typedef, typeref, typespec */
99 MONO_MT_TDOR_IDX,
100
101 /* MemberRefParent coded index: typeref, moduleref, method, memberref, typesepc, typedef */
102 MONO_MT_MRP_IDX,
103
104 /* MethodDefOrRef coded index: Method or Member Ref table */
105 MONO_MT_MDOR_IDX,
106
107 /* HasSemantic coded index: Event or Property */
108 MONO_MT_HS_IDX,
109
110 /* ResolutionScope coded index: Module, ModuleRef, AssemblytRef, TypeRef */
111 MONO_MT_RS_IDX
112 };
113
114 const static unsigned char TableSchemas [] = {
115 #define ASSEMBLY_SCHEMA_OFFSET 0
116 MONO_MT_UINT32, /* "HashId" }, */
117 MONO_MT_UINT16, /* "Major" }, */
118 MONO_MT_UINT16, /* "Minor" }, */
119 MONO_MT_UINT16, /* "BuildNumber" }, */
120 MONO_MT_UINT16, /* "RevisionNumber" }, */
121 MONO_MT_UINT32, /* "Flags" }, */
122 MONO_MT_BLOB_IDX, /* "PublicKey" }, */
123 MONO_MT_STRING_IDX, /* "Name" }, */
124 MONO_MT_STRING_IDX, /* "Culture" }, */
125 MONO_MT_END,
126
127 #define ASSEMBLYOS_SCHEMA_OFFSET ASSEMBLY_SCHEMA_OFFSET + 10
128 MONO_MT_UINT32, /* "OSPlatformID" }, */
129 MONO_MT_UINT32, /* "OSMajor" }, */
130 MONO_MT_UINT32, /* "OSMinor" }, */
131 MONO_MT_END,
132
133 #define ASSEMBLYPROC_SCHEMA_OFFSET ASSEMBLYOS_SCHEMA_OFFSET + 4
134 MONO_MT_UINT32, /* "Processor" }, */
135 MONO_MT_END,
136
137 #define ASSEMBLYREF_SCHEMA_OFFSET ASSEMBLYPROC_SCHEMA_OFFSET + 2
138 MONO_MT_UINT16, /* "Major" }, */
139 MONO_MT_UINT16, /* "Minor" }, */
140 MONO_MT_UINT16, /* "Build" }, */
141 MONO_MT_UINT16, /* "Revision" }, */
142 MONO_MT_UINT32, /* "Flags" }, */
143 MONO_MT_BLOB_IDX, /* "PublicKeyOrToken" }, */
144 MONO_MT_STRING_IDX, /* "Name" }, */
145 MONO_MT_STRING_IDX, /* "Culture" }, */
146 MONO_MT_BLOB_IDX, /* "HashValue" }, */
147 MONO_MT_END,
148
149 #define ASSEMBLYREFOS_SCHEMA_OFFSET ASSEMBLYREF_SCHEMA_OFFSET + 10
150 MONO_MT_UINT32, /* "OSPlatformID" }, */
151 MONO_MT_UINT32, /* "OSMajorVersion" }, */
152 MONO_MT_UINT32, /* "OSMinorVersion" }, */
153 MONO_MT_TABLE_IDX, /* "AssemblyRef:AssemblyRef" }, */
154 MONO_MT_END,
155
156 #define ASSEMBLYREFPROC_SCHEMA_OFFSET ASSEMBLYREFOS_SCHEMA_OFFSET + 5
157 MONO_MT_UINT32, /* "Processor" }, */
158 MONO_MT_TABLE_IDX, /* "AssemblyRef:AssemblyRef" }, */
159 MONO_MT_END,
160
161 #define CLASS_LAYOUT_SCHEMA_OFFSET ASSEMBLYREFPROC_SCHEMA_OFFSET + 3
162 MONO_MT_UINT16, /* "PackingSize" }, */
163 MONO_MT_UINT32, /* "ClassSize" }, */
164 MONO_MT_TABLE_IDX, /* "Parent:TypeDef" }, */
165 MONO_MT_END,
166
167 #define CONSTANT_SCHEMA_OFFSET CLASS_LAYOUT_SCHEMA_OFFSET + 4
168 MONO_MT_UINT8, /* "Type" }, */
169 MONO_MT_UINT8, /* "PaddingZero" }, */
170 MONO_MT_CONST_IDX, /* "Parent" }, */
171 MONO_MT_BLOB_IDX, /* "Value" }, */
172 MONO_MT_END,
173
174 #define CUSTOM_ATTR_SCHEMA_OFFSET CONSTANT_SCHEMA_OFFSET + 5
175 MONO_MT_HASCAT_IDX, /* "Parent" }, */
176 MONO_MT_CAT_IDX, /* "Type" }, */
177 MONO_MT_BLOB_IDX, /* "Value" }, */
178 MONO_MT_END,
179
180 #define DECL_SEC_SCHEMA_OFFSET CUSTOM_ATTR_SCHEMA_OFFSET + 4
181 MONO_MT_UINT16, /* "Action" }, */
182 MONO_MT_HASDEC_IDX, /* "Parent" }, */
183 MONO_MT_BLOB_IDX, /* "PermissionSet" }, */
184 MONO_MT_END,
185
186 #define EVENTMAP_SCHEMA_OFFSET DECL_SEC_SCHEMA_OFFSET + 4
187 MONO_MT_TABLE_IDX, /* "Parent:TypeDef" }, */
188 MONO_MT_TABLE_IDX, /* "EventList:Event" }, */
189 MONO_MT_END,
190
191 #define EVENT_SCHEMA_OFFSET EVENTMAP_SCHEMA_OFFSET + 3
192 MONO_MT_UINT16, /* "EventFlags#EventAttribute" }, */
193 MONO_MT_STRING_IDX, /* "Name" }, */
194 MONO_MT_TDOR_IDX, /* "EventType" }, TypeDef or TypeRef or TypeSpec */
195 MONO_MT_END,
196
197 #define EVENT_POINTER_SCHEMA_OFFSET EVENT_SCHEMA_OFFSET + 4
198 MONO_MT_TABLE_IDX, /* "Event" }, */
199 MONO_MT_END,
200
201 #define EXPORTED_TYPE_SCHEMA_OFFSET EVENT_POINTER_SCHEMA_OFFSET + 2
202 MONO_MT_UINT32, /* "Flags" }, */
203 MONO_MT_TABLE_IDX, /* "TypeDefId" }, */
204 MONO_MT_STRING_IDX, /* "TypeName" }, */
205 MONO_MT_STRING_IDX, /* "TypeNameSpace" }, */
206 MONO_MT_IMPL_IDX, /* "Implementation" }, */
207 MONO_MT_END,
208
209 #define FIELD_SCHEMA_OFFSET EXPORTED_TYPE_SCHEMA_OFFSET + 6
210 MONO_MT_UINT16, /* "Flags" }, */
211 MONO_MT_STRING_IDX, /* "Name" }, */
212 MONO_MT_BLOB_IDX, /* "Signature" }, */
213 MONO_MT_END,
214
215 #define FIELD_LAYOUT_SCHEMA_OFFSET FIELD_SCHEMA_OFFSET + 4
216 MONO_MT_UINT32, /* "Offset" }, */
217 MONO_MT_TABLE_IDX, /* "Field:Field" }, */
218 MONO_MT_END,
219
220 #define FIELD_MARSHAL_SCHEMA_OFFSET FIELD_LAYOUT_SCHEMA_OFFSET + 3
221 MONO_MT_HFM_IDX, /* "Parent" }, */
222 MONO_MT_BLOB_IDX, /* "NativeType" }, */
223 MONO_MT_END,
224
225 #define FIELD_RVA_SCHEMA_OFFSET FIELD_MARSHAL_SCHEMA_OFFSET + 3
226 MONO_MT_UINT32, /* "RVA" }, */
227 MONO_MT_TABLE_IDX, /* "Field:Field" }, */
228 MONO_MT_END,
229
230 #define FIELD_POINTER_SCHEMA_OFFSET FIELD_RVA_SCHEMA_OFFSET + 3
231 MONO_MT_TABLE_IDX, /* "Field" }, */
232 MONO_MT_END,
233
234 #define FILE_SCHEMA_OFFSET FIELD_POINTER_SCHEMA_OFFSET + 2
235 MONO_MT_UINT32, /* "Flags" }, */
236 MONO_MT_STRING_IDX, /* "Name" }, */
237 MONO_MT_BLOB_IDX, /* "Value" }, */
238 MONO_MT_END,
239
240 #define IMPLMAP_SCHEMA_OFFSET FILE_SCHEMA_OFFSET + 4
241 MONO_MT_UINT16, /* "MappingFlag" }, */
242 MONO_MT_MF_IDX, /* "MemberForwarded" }, */
243 MONO_MT_STRING_IDX, /* "ImportName" }, */
244 MONO_MT_TABLE_IDX, /* "ImportScope:ModuleRef" }, */
245 MONO_MT_END,
246
247 #define IFACEMAP_SCHEMA_OFFSET IMPLMAP_SCHEMA_OFFSET + 5
248 MONO_MT_TABLE_IDX, /* "Class:TypeDef" }, */
249 MONO_MT_TDOR_IDX, /* "Interface=TypeDefOrRef" }, */
250 MONO_MT_END,
251
252 #define MANIFEST_SCHEMA_OFFSET IFACEMAP_SCHEMA_OFFSET + 3
253 MONO_MT_UINT32, /* "Offset" }, */
254 MONO_MT_UINT32, /* "Flags" }, */
255 MONO_MT_STRING_IDX, /* "Name" }, */
256 MONO_MT_IMPL_IDX, /* "Implementation" }, */
257 MONO_MT_END,
258
259 #define MEMBERREF_SCHEMA_OFFSET MANIFEST_SCHEMA_OFFSET + 5
260 MONO_MT_MRP_IDX, /* "Class" }, */
261 MONO_MT_STRING_IDX, /* "Name" }, */
262 MONO_MT_BLOB_IDX, /* "Signature" }, */
263 MONO_MT_END,
264
265 #define METHOD_SCHEMA_OFFSET MEMBERREF_SCHEMA_OFFSET + 4
266 MONO_MT_UINT32, /* "RVA" }, */
267 MONO_MT_UINT16, /* "ImplFlags#MethodImplAttributes" }, */
268 MONO_MT_UINT16, /* "Flags#MethodAttribute" }, */
269 MONO_MT_STRING_IDX, /* "Name" }, */
270 MONO_MT_BLOB_IDX, /* "Signature" }, */
271 MONO_MT_TABLE_IDX, /* "ParamList:Param" }, */
272 MONO_MT_END,
273
274 #define METHOD_IMPL_SCHEMA_OFFSET METHOD_SCHEMA_OFFSET + 7
275 MONO_MT_TABLE_IDX, /* "Class:TypeDef" }, */
276 MONO_MT_MDOR_IDX, /* "MethodBody" }, */
277 MONO_MT_MDOR_IDX, /* "MethodDeclaration" }, */
278 MONO_MT_END,
279
280 #define METHOD_SEMA_SCHEMA_OFFSET METHOD_IMPL_SCHEMA_OFFSET + 4
281 MONO_MT_UINT16, /* "MethodSemantic" }, */
282 MONO_MT_TABLE_IDX, /* "Method:Method" }, */
283 MONO_MT_HS_IDX, /* "Association" }, */
284 MONO_MT_END,
285
286 #define METHOD_POINTER_SCHEMA_OFFSET METHOD_SEMA_SCHEMA_OFFSET + 4
287 MONO_MT_TABLE_IDX, /* "Method" }, */
288 MONO_MT_END,
289
290 #define MODULE_SCHEMA_OFFSET METHOD_POINTER_SCHEMA_OFFSET + 2
291 MONO_MT_UINT16, /* "Generation" }, */
292 MONO_MT_STRING_IDX, /* "Name" }, */
293 MONO_MT_GUID_IDX, /* "MVID" }, */
294 MONO_MT_GUID_IDX, /* "EncID" }, */
295 MONO_MT_GUID_IDX, /* "EncBaseID" }, */
296 MONO_MT_END,
297
298 #define MODULEREF_SCHEMA_OFFSET MODULE_SCHEMA_OFFSET + 6
299 MONO_MT_STRING_IDX, /* "Name" }, */
300 MONO_MT_END,
301
302 #define NESTED_CLASS_SCHEMA_OFFSET MODULEREF_SCHEMA_OFFSET + 2
303 MONO_MT_TABLE_IDX, /* "NestedClass:TypeDef" }, */
304 MONO_MT_TABLE_IDX, /* "EnclosingClass:TypeDef" }, */
305 MONO_MT_END,
306
307 #define PARAM_SCHEMA_OFFSET NESTED_CLASS_SCHEMA_OFFSET + 3
308 MONO_MT_UINT16, /* "Flags" }, */
309 MONO_MT_UINT16, /* "Sequence" }, */
310 MONO_MT_STRING_IDX, /* "Name" }, */
311 MONO_MT_END,
312
313 #define PARAM_POINTER_SCHEMA_OFFSET PARAM_SCHEMA_OFFSET + 4
314 MONO_MT_TABLE_IDX, /* "Param" }, */
315 MONO_MT_END,
316
317 #define PROPERTY_SCHEMA_OFFSET PARAM_POINTER_SCHEMA_OFFSET + 2
318 MONO_MT_UINT16, /* "Flags" }, */
319 MONO_MT_STRING_IDX, /* "Name" }, */
320 MONO_MT_BLOB_IDX, /* "Type" }, */
321 MONO_MT_END,
322
323 #define PROPERTY_POINTER_SCHEMA_OFFSET PROPERTY_SCHEMA_OFFSET + 4
324 MONO_MT_TABLE_IDX, /* "Property" }, */
325 MONO_MT_END,
326
327 #define PROPERTY_MAP_SCHEMA_OFFSET PROPERTY_POINTER_SCHEMA_OFFSET + 2
328 MONO_MT_TABLE_IDX, /* "Parent:TypeDef" }, */
329 MONO_MT_TABLE_IDX, /* "PropertyList:Property" }, */
330 MONO_MT_END,
331
332 #define STDALON_SIG_SCHEMA_OFFSET PROPERTY_MAP_SCHEMA_OFFSET + 3
333 MONO_MT_BLOB_IDX, /* "Signature" }, */
334 MONO_MT_END,
335
336 #define TYPEDEF_SCHEMA_OFFSET STDALON_SIG_SCHEMA_OFFSET + 2
337 MONO_MT_UINT32, /* "Flags" }, */
338 MONO_MT_STRING_IDX, /* "Name" }, */
339 MONO_MT_STRING_IDX, /* "Namespace" }, */
340 MONO_MT_TDOR_IDX, /* "Extends" }, */
341 MONO_MT_TABLE_IDX, /* "FieldList:Field" }, */
342 MONO_MT_TABLE_IDX, /* "MethodList:Method" }, */
343 MONO_MT_END,
344
345 #define TYPEREF_SCHEMA_OFFSET TYPEDEF_SCHEMA_OFFSET + 7
346 MONO_MT_RS_IDX, /* "ResolutionScope=ResolutionScope" }, */
347 MONO_MT_STRING_IDX, /* "Name" }, */
348 MONO_MT_STRING_IDX, /* "Namespace" }, */
349 MONO_MT_END,
350
351 #define TYPESPEC_SCHEMA_OFFSET TYPEREF_SCHEMA_OFFSET + 4
352 MONO_MT_BLOB_IDX, /* "Signature" }, */
353 MONO_MT_END,
354
355 #define GENPARAM_SCHEMA_OFFSET TYPESPEC_SCHEMA_OFFSET + 2
356 MONO_MT_UINT16, /* "Number" }, */
357 MONO_MT_UINT16, /* "Flags" }, */
358 MONO_MT_TABLE_IDX, /* "Owner" }, TypeDef or MethodDef */
359 MONO_MT_STRING_IDX, /* "Name" }, */
360 MONO_MT_END,
361
362 #define METHOD_SPEC_SCHEMA_OFFSET GENPARAM_SCHEMA_OFFSET + 5
363 MONO_MT_MDOR_IDX, /* "Method" }, */
364 MONO_MT_BLOB_IDX, /* "Signature" }, */
365 MONO_MT_END,
366
367 #define GEN_CONSTRAINT_SCHEMA_OFFSET METHOD_SPEC_SCHEMA_OFFSET + 3
368 MONO_MT_TABLE_IDX, /* "GenericParam" }, */
369 MONO_MT_TDOR_IDX, /* "Constraint" }, */
370 MONO_MT_END,
371
372 #define NULL_SCHEMA_OFFSET GEN_CONSTRAINT_SCHEMA_OFFSET + 3
373 MONO_MT_END
374 };
375
376 /* Must be the same order as MONO_TABLE_* */
377 const static unsigned char
378 table_description [] = {
379 MODULE_SCHEMA_OFFSET,
380 TYPEREF_SCHEMA_OFFSET,
381 TYPEDEF_SCHEMA_OFFSET,
382 FIELD_POINTER_SCHEMA_OFFSET,
383 FIELD_SCHEMA_OFFSET,
384 METHOD_POINTER_SCHEMA_OFFSET,
385 METHOD_SCHEMA_OFFSET,
386 PARAM_POINTER_SCHEMA_OFFSET,
387 PARAM_SCHEMA_OFFSET,
388 IFACEMAP_SCHEMA_OFFSET,
389 MEMBERREF_SCHEMA_OFFSET, /* 0xa */
390 CONSTANT_SCHEMA_OFFSET,
391 CUSTOM_ATTR_SCHEMA_OFFSET,
392 FIELD_MARSHAL_SCHEMA_OFFSET,
393 DECL_SEC_SCHEMA_OFFSET,
394 CLASS_LAYOUT_SCHEMA_OFFSET,
395 FIELD_LAYOUT_SCHEMA_OFFSET, /* 0x10 */
396 STDALON_SIG_SCHEMA_OFFSET,
397 EVENTMAP_SCHEMA_OFFSET,
398 EVENT_POINTER_SCHEMA_OFFSET,
399 EVENT_SCHEMA_OFFSET,
400 PROPERTY_MAP_SCHEMA_OFFSET,
401 PROPERTY_POINTER_SCHEMA_OFFSET,
402 PROPERTY_SCHEMA_OFFSET,
403 METHOD_SEMA_SCHEMA_OFFSET,
404 METHOD_IMPL_SCHEMA_OFFSET,
405 MODULEREF_SCHEMA_OFFSET, /* 0x1a */
406 TYPESPEC_SCHEMA_OFFSET,
407 IMPLMAP_SCHEMA_OFFSET,
408 FIELD_RVA_SCHEMA_OFFSET,
409 NULL_SCHEMA_OFFSET,
410 NULL_SCHEMA_OFFSET,
411 ASSEMBLY_SCHEMA_OFFSET, /* 0x20 */
412 ASSEMBLYPROC_SCHEMA_OFFSET,
413 ASSEMBLYOS_SCHEMA_OFFSET,
414 ASSEMBLYREF_SCHEMA_OFFSET,
415 ASSEMBLYREFPROC_SCHEMA_OFFSET,
416 ASSEMBLYREFOS_SCHEMA_OFFSET,
417 FILE_SCHEMA_OFFSET,
418 EXPORTED_TYPE_SCHEMA_OFFSET,
419 MANIFEST_SCHEMA_OFFSET,
420 NESTED_CLASS_SCHEMA_OFFSET,
421 GENPARAM_SCHEMA_OFFSET, /* 0x2a */
422 METHOD_SPEC_SCHEMA_OFFSET,
423 GEN_CONSTRAINT_SCHEMA_OFFSET
424 };
425
426 #ifdef HAVE_ARRAY_ELEM_INIT
427 #define MSGSTRFIELD(line) MSGSTRFIELD1(line)
428 #define MSGSTRFIELD1(line) str##line
429 static const struct msgstr_t {
430 #define TABLEDEF(a,b) char MSGSTRFIELD(__LINE__) [sizeof (b)];
431 #include "mono/cil/tables.def"
432 #undef TABLEDEF
433 } tablestr = {
434 #define TABLEDEF(a,b) b,
435 #include "mono/cil/tables.def"
436 #undef TABLEDEF
437 };
438 static const gint16 tableidx [] = {
439 #define TABLEDEF(a,b) [a] = offsetof (struct msgstr_t, MSGSTRFIELD(__LINE__)),
440 #include "mono/cil/tables.def"
441 #undef TABLEDEF
442 };
443
444 #else
445 #define TABLEDEF(a,b) b,
446 static const char* const
447 mono_tables_names [] = {
448 #include "mono/cil/tables.def"
449 NULL
450 };
451
452 #endif
453
454 /**
455 * mono_meta_table_name:
456 * @table: table index
457 *
458 * Returns the name of the given ECMA metadata logical format table
459 * as described in ECMA 335, Partition II, Section 22.
460 *
461 * Returns: the name for the @table index
462 */
463 const char *
464 mono_meta_table_name (int table)
465 {
466 if ((table < 0) || (table > MONO_TABLE_LAST))
467 return "";
468
469 #ifdef HAVE_ARRAY_ELEM_INIT
470 return (const char*)&tablestr + tableidx [table];
471 #else
472 return mono_tables_names [table];
473 #endif
474 }
475
476 /* The guy who wrote the spec for this should not be allowed near a
477 * computer again.
478
479 If e is a coded token(see clause 23.1.7) that points into table ti out of n possible tables t0, .. tn-1,
480 then it is stored as e << (log n) & tag{ t0, .. tn-1}[ ti] using 2 bytes if the maximum number of
481 rows of tables t0, ..tn-1, is less than 2^16 - (log n), and using 4 bytes otherwise. The family of
482 finite maps tag{ t0, ..tn-1} is defined below. Note that to decode a physical row, you need the
483 inverse of this mapping.
484
485 */
486 #define rtsize(s,b) (((s) < (1 << (b)) ? 2 : 4))
487 #define idx_size(tableidx) (meta->tables [(tableidx)].rows < 65536 ? 2 : 4)
488
489 /* Reference: Partition II - 23.2.6 */
490 /*
491 * mono_metadata_compute_size:
492 * @meta: metadata context
493 * @tableindex: metadata table number
494 * @result_bitfield: pointer to guint32 where to store additional info
495 *
496 * mono_metadata_compute_size() computes the lenght in bytes of a single
497 * row in a metadata table. The size of each column is encoded in the
498 * @result_bitfield return value along with the number of columns in the table.
499 * the resulting bitfield should be handed to the mono_metadata_table_size()
500 * and mono_metadata_table_count() macros.
501 * This is a Mono runtime internal only function.
502 */
503 int
504 mono_metadata_compute_size (MonoImage *meta, int tableindex, guint32 *result_bitfield)
505 {
506 guint32 bitfield = 0;
507 int size = 0, field_size = 0;
508 int i, n, code;
509 int shift = 0;
510 const unsigned char *description = TableSchemas + table_description [tableindex];
511
512 for (i = 0; (code = description [i]) != MONO_MT_END; i++){
513 switch (code){
514 case MONO_MT_UINT32:
515 field_size = 4; break;
516
517 case MONO_MT_UINT16:
518 field_size = 2; break;
519
520 case MONO_MT_UINT8:
521 field_size = 1; break;
522
523 case MONO_MT_BLOB_IDX:
524 field_size = meta->idx_blob_wide ? 4 : 2; break;
525
526 case MONO_MT_STRING_IDX:
527 field_size = meta->idx_string_wide ? 4 : 2; break;
528
529 case MONO_MT_GUID_IDX:
530 field_size = meta->idx_guid_wide ? 4 : 2; break;
531
532 case MONO_MT_TABLE_IDX:
533 /* Uhm, a table index can point to other tables besides the current one
534 * so, it's not correct to use the rowcount of the current table to
535 * get the size for this column - lupus
536 */
537 switch (tableindex) {
538 case MONO_TABLE_ASSEMBLYREFOS:
539 g_assert (i == 3);
540 field_size = idx_size (MONO_TABLE_ASSEMBLYREF); break;
541 case MONO_TABLE_ASSEMBLYREFPROCESSOR:
542 g_assert (i == 1);
543 field_size = idx_size (MONO_TABLE_ASSEMBLYREF); break;
544 case MONO_TABLE_CLASSLAYOUT:
545 g_assert (i == 2);
546 field_size = idx_size (MONO_TABLE_TYPEDEF); break;
547 case MONO_TABLE_EVENTMAP:
548 g_assert (i == 0 || i == 1);
549 field_size = i ? idx_size (MONO_TABLE_EVENT):
550 idx_size(MONO_TABLE_TYPEDEF);
551 break;
552 case MONO_TABLE_EVENT_POINTER:
553 g_assert (i == 0);
554 field_size = idx_size (MONO_TABLE_EVENT); break;
555 case MONO_TABLE_EXPORTEDTYPE:
556 g_assert (i == 1);
557 /* the index is in another metadata file, so it must be 4 */
558 field_size = 4; break;
559 case MONO_TABLE_FIELDLAYOUT:
560 g_assert (i == 1);
561 field_size = idx_size (MONO_TABLE_FIELD); break;
562 case MONO_TABLE_FIELDRVA:
563 g_assert (i == 1);
564 field_size = idx_size (MONO_TABLE_FIELD); break;
565 case MONO_TABLE_FIELD_POINTER:
566 g_assert (i == 0);
567 field_size = idx_size (MONO_TABLE_FIELD); break;
568 case MONO_TABLE_IMPLMAP:
569 g_assert (i == 3);
570 field_size = idx_size (MONO_TABLE_MODULEREF); break;
571 case MONO_TABLE_INTERFACEIMPL:
572 g_assert (i == 0);
573 field_size = idx_size (MONO_TABLE_TYPEDEF); break;
574 case MONO_TABLE_METHOD:
575 g_assert (i == 5);
576 field_size = idx_size (MONO_TABLE_PARAM); break;
577 case MONO_TABLE_METHODIMPL:
578 g_assert (i == 0);
579 field_size = idx_size (MONO_TABLE_TYPEDEF); break;
580 case MONO_TABLE_METHODSEMANTICS:
581 g_assert (i == 1);
582 field_size = idx_size (MONO_TABLE_METHOD); break;
583 case MONO_TABLE_METHOD_POINTER:
584 g_assert (i == 0);
585 field_size = idx_size (MONO_TABLE_METHOD); break;
586 case MONO_TABLE_NESTEDCLASS:
587 g_assert (i == 0 || i == 1);
588 field_size = idx_size (MONO_TABLE_TYPEDEF); break;
589 case MONO_TABLE_PARAM_POINTER:
590 g_assert (i == 0);
591 field_size = idx_size (MONO_TABLE_PARAM); break;
592 case MONO_TABLE_PROPERTYMAP:
593 g_assert (i == 0 || i == 1);
594 field_size = i ? idx_size (MONO_TABLE_PROPERTY):
595 idx_size(MONO_TABLE_TYPEDEF);
596 break;
597 case MONO_TABLE_PROPERTY_POINTER:
598 g_assert (i == 0);
599 field_size = idx_size (MONO_TABLE_PROPERTY); break;
600 case MONO_TABLE_TYPEDEF:
601 g_assert (i == 4 || i == 5);
602 field_size = i == 4 ? idx_size (MONO_TABLE_FIELD):
603 idx_size(MONO_TABLE_METHOD);
604 break;
605 case MONO_TABLE_GENERICPARAM:
606 g_assert (i == 2);
607 n = MAX (meta->tables [MONO_TABLE_METHOD].rows, meta->tables [MONO_TABLE_TYPEDEF].rows);
608 /*This is a coded token for 2 tables, so takes 1 bit */
609 field_size = rtsize (n, 16 - MONO_TYPEORMETHOD_BITS);
610 break;
611 case MONO_TABLE_GENERICPARAMCONSTRAINT:
612 g_assert (i == 0);
613 field_size = idx_size (MONO_TABLE_GENERICPARAM);
614 break;
615
616 default:
617 g_error ("Can't handle MONO_MT_TABLE_IDX for table %d element %d", tableindex, i);
618 }
619 break;
620
621 /*
622 * HasConstant: ParamDef, FieldDef, Property
623 */
624 case MONO_MT_CONST_IDX:
625 n = MAX (meta->tables [MONO_TABLE_PARAM].rows,
626 meta->tables [MONO_TABLE_FIELD].rows);
627 n = MAX (n, meta->tables [MONO_TABLE_PROPERTY].rows);
628
629 /* 2 bits to encode tag */
630 field_size = rtsize (n, 16-2);
631 break;
632
633 /*
634 * HasCustomAttribute: points to any table but
635 * itself.
636 */
637 case MONO_MT_HASCAT_IDX:
638 /*
639 * We believe that since the signature and
640 * permission are indexing the Blob heap,
641 * we should consider the blob size first
642 */
643 /* I'm not a believer - lupus
644 if (meta->idx_blob_wide){
645 field_size = 4;
646 break;
647 }*/
648
649 n = MAX (meta->tables [MONO_TABLE_METHOD].rows,
650 meta->tables [MONO_TABLE_FIELD].rows);
651 n = MAX (n, meta->tables [MONO_TABLE_TYPEREF].rows);
652 n = MAX (n, meta->tables [MONO_TABLE_TYPEDEF].rows);
653 n = MAX (n, meta->tables [MONO_TABLE_PARAM].rows);
654 n = MAX (n, meta->tables [MONO_TABLE_INTERFACEIMPL].rows);
655 n = MAX (n, meta->tables [MONO_TABLE_MEMBERREF].rows);
656 n = MAX (n, meta->tables [MONO_TABLE_MODULE].rows);
657 n = MAX (n, meta->tables [MONO_TABLE_DECLSECURITY].rows);
658 n = MAX (n, meta->tables [MONO_TABLE_PROPERTY].rows);
659 n = MAX (n, meta->tables [MONO_TABLE_EVENT].rows);
660 n = MAX (n, meta->tables [MONO_TABLE_STANDALONESIG].rows);
661 n = MAX (n, meta->tables [MONO_TABLE_MODULEREF].rows);
662 n = MAX (n, meta->tables [MONO_TABLE_TYPESPEC].rows);
663 n = MAX (n, meta->tables [MONO_TABLE_ASSEMBLY].rows);
664 n = MAX (n, meta->tables [MONO_TABLE_ASSEMBLYREF].rows);
665 n = MAX (n, meta->tables [MONO_TABLE_FILE].rows);
666 n = MAX (n, meta->tables [MONO_TABLE_EXPORTEDTYPE].rows);
667 n = MAX (n, meta->tables [MONO_TABLE_MANIFESTRESOURCE].rows);
668
669 /* 5 bits to encode */
670 field_size = rtsize (n, 16-5);
671 break;
672
673 /*
674 * CustomAttributeType: TypeDef, TypeRef, MethodDef,
675 * MemberRef and String.
676 */
677 case MONO_MT_CAT_IDX:
678 /* String is a heap, if it is wide, we know the size */
679 /* See above, nope.
680 if (meta->idx_string_wide){
681 field_size = 4;
682 break;
683 }*/
684
685 n = MAX (meta->tables [MONO_TABLE_TYPEREF].rows,
686 meta->tables [MONO_TABLE_TYPEDEF].rows);
687 n = MAX (n, meta->tables [MONO_TABLE_METHOD].rows);
688 n = MAX (n, meta->tables [MONO_TABLE_MEMBERREF].rows);
689
690 /* 3 bits to encode */
691 field_size = rtsize (n, 16-3);
692 break;
693
694 /*
695 * HasDeclSecurity: Typedef, MethodDef, Assembly
696 */
697 case MONO_MT_HASDEC_IDX:
698 n = MAX (meta->tables [MONO_TABLE_TYPEDEF].rows,
699 meta->tables [MONO_TABLE_METHOD].rows);
700 n = MAX (n, meta->tables [MONO_TABLE_ASSEMBLY].rows);
701
702 /* 2 bits to encode */
703 field_size = rtsize (n, 16-2);
704 break;
705
706 /*
707 * Implementation: File, AssemblyRef, ExportedType
708 */
709 case MONO_MT_IMPL_IDX:
710 n = MAX (meta->tables [MONO_TABLE_FILE].rows,
711 meta->tables [MONO_TABLE_ASSEMBLYREF].rows);
712 n = MAX (n, meta->tables [MONO_TABLE_EXPORTEDTYPE].rows);
713
714 /* 2 bits to encode tag */
715 field_size = rtsize (n, 16-2);
716 break;
717
718 /*
719 * HasFieldMarshall: FieldDef, ParamDef
720 */
721 case MONO_MT_HFM_IDX:
722 n = MAX (meta->tables [MONO_TABLE_FIELD].rows,
723 meta->tables [MONO_TABLE_PARAM].rows);
724
725 /* 1 bit used to encode tag */
726 field_size = rtsize (n, 16-1);
727 break;
728
729 /*
730 * MemberForwarded: FieldDef, MethodDef
731 */
732 case MONO_MT_MF_IDX:
733 n = MAX (meta->tables [MONO_TABLE_FIELD].rows,
734 meta->tables [MONO_TABLE_METHOD].rows);
735
736 /* 1 bit used to encode tag */
737 field_size = rtsize (n, 16-1);
738 break;
739
740 /*
741 * TypeDefOrRef: TypeDef, ParamDef, TypeSpec
742 * LAMESPEC
743 * It is TypeDef, _TypeRef_, TypeSpec, instead.
744 */
745 case MONO_MT_TDOR_IDX:
746 n = MAX (meta->tables [MONO_TABLE_TYPEDEF].rows,
747 meta->tables [MONO_TABLE_TYPEREF].rows);
748 n = MAX (n, meta->tables [MONO_TABLE_TYPESPEC].rows);
749
750 /* 2 bits to encode */
751 field_size = rtsize (n, 16-2);
752 break;
753
754 /*
755 * MemberRefParent: TypeDef, TypeRef, MethodDef, ModuleRef, TypeSpec, MemberRef
756 */
757 case MONO_MT_MRP_IDX:
758 n = MAX (meta->tables [MONO_TABLE_TYPEDEF].rows,
759 meta->tables [MONO_TABLE_TYPEREF].rows);
760 n = MAX (n, meta->tables [MONO_TABLE_METHOD].rows);
761 n = MAX (n, meta->tables [MONO_TABLE_MODULEREF].rows);
762 n = MAX (n, meta->tables [MONO_TABLE_TYPESPEC].rows);
763
764 /* 3 bits to encode */
765 field_size = rtsize (n, 16 - 3);
766 break;
767
768 /*
769 * MethodDefOrRef: MethodDef, MemberRef
770 */
771 case MONO_MT_MDOR_IDX:
772 n = MAX (meta->tables [MONO_TABLE_METHOD].rows,
773 meta->tables [MONO_TABLE_MEMBERREF].rows);
774
775 /* 1 bit used to encode tag */
776 field_size = rtsize (n, 16-1);
777 break;
778
779 /*
780 * HasSemantics: Property, Event
781 */
782 case MONO_MT_HS_IDX:
783 n = MAX (meta->tables [MONO_TABLE_PROPERTY].rows,
784 meta->tables [MONO_TABLE_EVENT].rows);
785
786 /* 1 bit used to encode tag */
787 field_size = rtsize (n, 16-1);
788 break;
789
790 /*
791 * ResolutionScope: Module, ModuleRef, AssemblyRef, TypeRef
792 */
793 case MONO_MT_RS_IDX:
794 n = MAX (meta->tables [MONO_TABLE_MODULE].rows,
795 meta->tables [MONO_TABLE_MODULEREF].rows);
796 n = MAX (n, meta->tables [MONO_TABLE_ASSEMBLYREF].rows);
797 n = MAX (n, meta->tables [MONO_TABLE_TYPEREF].rows);
798
799 /* 2 bits used to encode tag (ECMA spec claims 3) */
800 field_size = rtsize (n, 16 - 2);
801 break;
802 }
803
804 /*
805 * encode field size as follows (we just need to
806 * distinguish them).
807 *
808 * 4 -> 3
809 * 2 -> 1
810 * 1 -> 0
811 */
812 bitfield |= (field_size-1) << shift;
813 shift += 2;
814 size += field_size;
815 /*g_print ("table %02x field %d size %d\n", tableindex, i, field_size);*/
816 }
817
818 *result_bitfield = (i << 24) | bitfield;
819 return size;
820 }
821
822 /**
823 * mono_metadata_compute_table_bases:
824 * @meta: metadata context to compute table values
825 *
826 * Computes the table bases for the metadata structure.
827 * This is an internal function used by the image loader code.
828 */
829 void
830 mono_metadata_compute_table_bases (MonoImage *meta)
831 {
832 int i;
833 const char *base = meta->tables_base;
834
835 for (i = 0; i < MONO_TABLE_NUM; i++) {
836 MonoTableInfo *table = &meta->tables [i];
837 if (table->rows == 0)
838 continue;
839
840 table->row_size = mono_metadata_compute_size (meta, i, &table->size_bitfield);
841 table->base = base;
842 base += table->rows * table->row_size;
843 }
844 }
845
846 /**
847 * mono_metadata_locate:
848 * @meta: metadata context
849 * @table: table code.
850 * @idx: index of element to retrieve from @table.
851 *
852 * Returns: a pointer to the @idx element in the metadata table
853 * whose code is @table.
854 */
855 const char *
856 mono_metadata_locate (MonoImage *meta, int table, int idx)
857 {
858 /* idx == 0 refers always to NULL */
859 g_return_val_if_fail (idx > 0 && idx <= meta->tables [table].rows, ""); /*FIXME shouldn't we return NULL here?*/
860
861 return meta->tables [table].base + (meta->tables [table].row_size * (idx - 1));
862 }
863
864 /**
865 * mono_metadata_locate_token:
866 * @meta: metadata context
867 * @token: metadata token
868 *
869 * Returns: a pointer to the data in the metadata represented by the
870 * token #token.
871 */
872 const char *
873 mono_metadata_locate_token (MonoImage *meta, guint32 token)
874 {
875 return mono_metadata_locate (meta, token >> 24, token & 0xffffff);
876 }
877
878 /**
879 * mono_metadata_string_heap:
880 * @meta: metadata context
881 * @index: index into the string heap.
882 *
883 * Returns: an in-memory pointer to the @index in the string heap.
884 */
885 const char *
886 mono_metadata_string_heap (MonoImage *meta, guint32 index)
887 {
888 g_assert (index < meta->heap_strings.size);
889 g_return_val_if_fail (index < meta->heap_strings.size, "");
890 return meta->heap_strings.data + index;
891 }
892
893 /**
894 * mono_metadata_user_string:
895 * @meta: metadata context
896 * @index: index into the user string heap.
897 *
898 * Returns: an in-memory pointer to the @index in the user string heap ("#US").
899 */
900 const char *
901 mono_metadata_user_string (MonoImage *meta, guint32 index)
902 {
903 g_assert (index < meta->heap_us.size);
904 g_return_val_if_fail (index < meta->heap_us.size, "");
905 return meta->heap_us.data + index;
906 }
907
908 /**
909 * mono_metadata_blob_heap:
910 * @meta: metadata context
911 * @index: index into the blob.
912 *
913 * Returns: an in-memory pointer to the @index in the Blob heap.
914 */
915 const char *
916 mono_metadata_blob_heap (MonoImage *meta, guint32 index)
917 {
918 g_assert (index < meta->heap_blob.size);
919 g_return_val_if_fail (index < meta->heap_blob.size, "");/*FIXME shouldn't we return NULL and check for index == 0?*/
920 return meta->heap_blob.data + index;
921 }
922
923 /**
924 * mono_metadata_guid_heap:
925 * @meta: metadata context
926 * @index: index into the guid heap.
927 *
928 * Returns: an in-memory pointer to the @index in the guid heap.
929 */
930 const char *
931 mono_metadata_guid_heap (MonoImage *meta, guint32 index)
932 {
933 --index;
934 index *= 16; /* adjust for guid size and 1-based index */
935 g_return_val_if_fail (index < meta->heap_guid.size, "");
936 return meta->heap_guid.data + index;
937 }
938
939 static const unsigned char *
940 dword_align (const unsigned char *ptr)
941 {
942 #if SIZEOF_VOID_P == 8
943 return (const unsigned char *) (((guint64) (ptr + 3)) & ~3);
944 #else
945 return (const unsigned char *) (((guint32) (ptr + 3)) & ~3);
946 #endif
947 }
948
949 /**
950 * mono_metadata_decode_row:
951 * @t: table to extract information from.
952 * @idx: index in table.
953 * @res: array of @res_size cols to store the results in
954 *
955 * This decompresses the metadata element @idx in table @t
956 * into the guint32 @res array that has res_size elements
957 */
958 void
959 mono_metadata_decode_row (const MonoTableInfo *t, int idx, guint32 *res, int res_size)
960 {
961 guint32 bitfield = t->size_bitfield;
962 int i, count = mono_metadata_table_count (bitfield);
963 const char *data;
964
965 g_assert (idx < t->rows);
966 g_assert (idx >= 0);
967 data = t->base + idx * t->row_size;
968
969 g_assert (res_size == count);
970
971 for (i = 0; i < count; i++) {
972 int n = mono_metadata_table_size (bitfield, i);
973
974 switch (n){
975 case 1:
976 res [i] = *data; break;
977 case 2:
978 res [i] = read16 (data); break;
979 case 4:
980 res [i] = read32 (data); break;
981 default:
982 g_assert_not_reached ();
983 }
984 data += n;
985 }
986 }
987
988 /**
989 * mono_metadata_decode_row_col:
990 * @t: table to extract information from.
991 * @idx: index for row in table.
992 * @col: column in the row.
993 *
994 * This function returns the value of column @col from the @idx
995 * row in the table @t.
996 */
997 guint32
998 mono_metadata_decode_row_col (const MonoTableInfo *t, int idx, guint col)
999 {
1000 guint32 bitfield = t->size_bitfield;
1001 int i;
1002 register const char *data;
1003 register int n;
1004
1005 g_assert (idx < t->rows);
1006 g_assert (col < mono_metadata_table_count (bitfield));
1007 data = t->base + idx * t->row_size;
1008
1009 n = mono_metadata_table_size (bitfield, 0);
1010 for (i = 0; i < col; ++i) {
1011 data += n;
1012 n = mono_metadata_table_size (bitfield, i + 1);
1013 }
1014 switch (n) {
1015 case 1:
1016 return *data;
1017 case 2:
1018 return read16 (data);
1019 case 4:
1020 return read32 (data);
1021 default:
1022 g_assert_not_reached ();
1023 }
1024 return 0;
1025 }
1026
1027 /**
1028 * mono_metadata_decode_blob_size:
1029 * @ptr: pointer to a blob object
1030 * @rptr: the new position of the pointer
1031 *
1032 * This decodes a compressed size as described by 23.1.4 (a blob or user string object)
1033 *
1034 * Returns: the size of the blob object
1035 */
1036 guint32
1037 mono_metadata_decode_blob_size (const char *xptr, const char **rptr)
1038 {
1039 const unsigned char *ptr = (const unsigned char *)xptr;
1040 guint32 size;
1041
1042 if ((*ptr & 0x80) == 0){
1043 size = ptr [0] & 0x7f;
1044 ptr++;
1045 } else if ((*ptr & 0x40) == 0){
1046 size = ((ptr [0] & 0x3f) << 8) + ptr [1];
1047 ptr += 2;
1048 } else {
1049 size = ((ptr [0] & 0x1f) << 24) +
1050 (ptr [1] << 16) +
1051 (ptr [2] << 8) +
1052 ptr [3];
1053 ptr += 4;
1054 }
1055 if (rptr)
1056 *rptr = (char*)ptr;
1057 return size;
1058 }
1059
1060 /**
1061 * mono_metadata_decode_value:
1062 * @ptr: pointer to decode from
1063 * @rptr: the new position of the pointer
1064 *
1065 * This routine decompresses 32-bit values as specified in the "Blob and
1066 * Signature" section (22.2)
1067 *
1068 * Returns: the decoded value
1069 */
1070 guint32
1071 mono_metadata_decode_value (const char *_ptr, const char **rptr)
1072 {
1073 const unsigned char *ptr = (const unsigned char *) _ptr;
1074 unsigned char b = *ptr;
1075 guint32 len;
1076
1077 if ((b & 0x80) == 0){
1078 len = b;
1079 ++ptr;
1080 } else if ((b & 0x40) == 0){
1081 len = ((b & 0x3f) << 8 | ptr [1]);
1082 ptr += 2;
1083 } else {
1084 len = ((b & 0x1f) << 24) |
1085 (ptr [1] << 16) |
1086 (ptr [2] << 8) |
1087 ptr [3];
1088 ptr += 4;
1089 }
1090 if (rptr)
1091 *rptr = (char*)ptr;
1092
1093 return len;
1094 }
1095
1096 /**
1097 * mono_metadata_decode_signed_value:
1098 * @ptr: pointer to decode from
1099 * @rptr: the new position of the pointer
1100 *
1101 * This routine decompresses 32-bit signed values
1102 * (not specified in the spec)
1103 *
1104 * Returns: the decoded value
1105 */
1106 gint32
1107 mono_metadata_decode_signed_value (const char *ptr, const char **rptr)
1108 {
1109 guint32 uval = mono_metadata_decode_value (ptr, rptr);
1110 gint32 ival = uval >> 1;
1111 if (!(uval & 1))
1112 return ival;
1113 /* ival is a truncated 2's complement negative number. */
1114 if (ival < 0x40)
1115 /* 6 bits = 7 bits for compressed representation (top bit is '0') - 1 sign bit */
1116 return ival - 0x40;
1117 if (ival < 0x2000)
1118 /* 13 bits = 14 bits for compressed representation (top bits are '10') - 1 sign bit */
1119 return ival - 0x2000;
1120 if (ival < 0x10000000)
1121 /* 28 bits = 29 bits for compressed representation (top bits are '110') - 1 sign bit */
1122 return ival - 0x10000000;
1123 g_assert (ival < 0x20000000);
1124 g_warning ("compressed signed value appears to use 29 bits for compressed representation: %x (raw: %8x)", ival, uval);
1125 return ival - 0x20000000;
1126 }
1127
1128 /*
1129 * Translates the given 1-based index into the Method, Field, Event, or Param tables
1130 * using the *Ptr tables in uncompressed metadata, if they are available.
1131 *
1132 * FIXME: The caller is not forced to call this function, which is error-prone, since
1133 * forgetting to call it would only show up as a bug on uncompressed metadata.
1134 */
1135 guint32
1136 mono_metadata_translate_token_index (MonoImage *image, int table, guint32 idx)
1137 {
1138 if (!image->uncompressed_metadata)
1139 return idx;
1140
1141 switch (table) {
1142 case MONO_TABLE_METHOD:
1143 if (image->tables [MONO_TABLE_METHOD_POINTER].rows)
1144 return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_METHOD_POINTER], idx - 1, MONO_METHOD_POINTER_METHOD);
1145 else
1146 return idx;
1147 case MONO_TABLE_FIELD:
1148 if (image->tables [MONO_TABLE_FIELD_POINTER].rows)
1149 return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_FIELD_POINTER], idx - 1, MONO_FIELD_POINTER_FIELD);
1150 else
1151 return idx;
1152 case MONO_TABLE_EVENT:
1153 if (image->tables [MONO_TABLE_EVENT_POINTER].rows)
1154 return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_EVENT_POINTER], idx - 1, MONO_EVENT_POINTER_EVENT);
1155 else
1156 return idx;
1157 case MONO_TABLE_PROPERTY:
1158 if (image->tables [MONO_TABLE_PROPERTY_POINTER].rows)
1159 return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_PROPERTY_POINTER], idx - 1, MONO_PROPERTY_POINTER_PROPERTY);
1160 else
1161 return idx;
1162 case MONO_TABLE_PARAM:
1163 if (image->tables [MONO_TABLE_PARAM_POINTER].rows)
1164 return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_PARAM_POINTER], idx - 1, MONO_PARAM_POINTER_PARAM);
1165 else
1166 return idx;
1167 default:
1168 return idx;
1169 }
1170 }
1171
1172 /**
1173 * mono_metadata_decode_table_row:
1174 *
1175 * Same as mono_metadata_decode_row, but takes an IMAGE+TABLE ID pair, and takes
1176 * uncompressed metadata into account, so it should be used to access the
1177 * Method, Field, Param and Event tables when the access is made from metadata, i.e.
1178 * IDX is retrieved from a metadata table, like MONO_TYPEDEF_FIELD_LIST.
1179 */
1180 void
1181 mono_metadata_decode_table_row (MonoImage *image, int table, int idx, guint32 *res, int res_size)
1182 {
1183 if (image->uncompressed_metadata)
1184 idx = mono_metadata_translate_token_index (image, table, idx + 1) - 1;
1185
1186 mono_metadata_decode_row (&image->tables [table], idx, res, res_size);
1187 }
1188
1189 /**
1190 * mono_metadata_decode_table_row_col:
1191 *
1192 * Same as mono_metadata_decode_row_col, but takes an IMAGE+TABLE ID pair, and takes
1193 * uncompressed metadata into account, so it should be used to access the
1194 * Method, Field, Param and Event tables.
1195 */
1196 guint32 mono_metadata_decode_table_row_col (MonoImage *image, int table, int idx, guint col)
1197 {
1198 if (image->uncompressed_metadata)
1199 idx = mono_metadata_translate_token_index (image, table, idx + 1) - 1;
1200
1201 return mono_metadata_decode_row_col (&image->tables [table], idx, col);
1202 }
1203
1204 /*
1205 * mono_metadata_parse_typedef_or_ref:
1206 * @m: a metadata context.
1207 * @ptr: a pointer to an encoded TypedefOrRef in @m
1208 * @rptr: pointer updated to match the end of the decoded stream
1209 *
1210 * Returns: a token valid in the @m metadata decoded from
1211 * the compressed representation.
1212 */
1213 guint32
1214 mono_metadata_parse_typedef_or_ref (MonoImage *m, const char *ptr, const char **rptr)
1215 {
1216 guint32 token;
1217 token = mono_metadata_decode_value (ptr, &ptr);
1218 if (rptr)
1219 *rptr = ptr;
1220 return mono_metadata_token_from_dor (token);
1221 }
1222
1223 /*
1224 * mono_metadata_parse_custom_mod:
1225 * @m: a metadata context.
1226 * @dest: storage where the info about the custom modifier is stored (may be NULL)
1227 * @ptr: a pointer to (possibly) the start of a custom modifier list
1228 * @rptr: pointer updated to match the end of the decoded stream
1229 *
1230 * Checks if @ptr points to a type custom modifier compressed representation.
1231 *
1232 * Returns: #TRUE if a custom modifier was found, #FALSE if not.
1233 */
1234 int
1235 mono_metadata_parse_custom_mod (MonoImage *m, MonoCustomMod *dest, const char *ptr, const char **rptr)
1236 {
1237 MonoCustomMod local;
1238 if ((*ptr == MONO_TYPE_CMOD_OPT) || (*ptr == MONO_TYPE_CMOD_REQD)) {
1239 if (!dest)
1240 dest = &local;
1241 dest->required = *ptr == MONO_TYPE_CMOD_REQD ? 1 : 0;
1242 dest->token = mono_metadata_parse_typedef_or_ref (m, ptr + 1, rptr);
1243 return TRUE;
1244 }
1245 return FALSE;
1246 }
1247
1248 /*
1249 * mono_metadata_parse_array_internal:
1250 * @m: a metadata context.
1251 * @transient: whenever to allocate data from the heap
1252 * @ptr: a pointer to an encoded array description.
1253 * @rptr: pointer updated to match the end of the decoded stream
1254 *
1255 * Decodes the compressed array description found in the metadata @m at @ptr.
1256 *
1257 * Returns: a #MonoArrayType structure describing the array type
1258 * and dimensions. Memory is allocated from the heap or from the image mempool, depending
1259 * on the value of @transient.
1260 *
1261 * LOCKING: Acquires the loader lock
1262 */
1263 static MonoArrayType *
1264 mono_metadata_parse_array_internal (MonoImage *m, MonoGenericContainer *container,
1265 gboolean transient, const char *ptr, const char **rptr)
1266 {
1267 int i;
1268 MonoArrayType *array;
1269 MonoType *etype;
1270
1271 array = transient ? g_malloc0 (sizeof (MonoArrayType)) : mono_image_alloc0 (m, sizeof (MonoArrayType));
1272 etype = mono_metadata_parse_type_full (m, container, MONO_PARSE_TYPE, 0, ptr, &ptr);
1273 if (!etype)
1274 return NULL;
1275 array->eklass = mono_class_from_mono_type (etype);
1276 array->rank = mono_metadata_decode_value (ptr, &ptr);
1277
1278 array->numsizes = mono_metadata_decode_value (ptr, &ptr);
1279 if (array->numsizes)
1280 array->sizes = transient ? g_malloc0 (sizeof (int) * array->numsizes) : mono_image_alloc0 (m, sizeof (int) * array->numsizes);
1281 for (i = 0; i < array->numsizes; ++i)
1282 array->sizes [i] = mono_metadata_decode_value (ptr, &ptr);
1283
1284 array->numlobounds = mono_metadata_decode_value (ptr, &ptr);
1285 if (array->numlobounds)
1286 array->lobounds = transient ? g_malloc0 (sizeof (int) * array->numlobounds) : mono_image_alloc0 (m, sizeof (int) * array->numlobounds);
1287 for (i = 0; i < array->numlobounds; ++i)
1288 array->lobounds [i] = mono_metadata_decode_signed_value (ptr, &ptr);
1289
1290 if (rptr)
1291 *rptr = ptr;
1292 return array;
1293 }
1294
1295 MonoArrayType *
1296 mono_metadata_parse_array_full (MonoImage *m, MonoGenericContainer *container,
1297 const char *ptr, const char **rptr)
1298 {
1299 return mono_metadata_parse_array_internal (m, container, FALSE, ptr, rptr);
1300 }
1301
1302 MonoArrayType *
1303 mono_metadata_parse_array (MonoImage *m, const char *ptr, const char **rptr)
1304 {
1305 return mono_metadata_parse_array_full (m, NULL, ptr, rptr);
1306 }
1307
1308 /*
1309 * mono_metadata_free_array:
1310 * @array: array description
1311 *
1312 * Frees the array description returned from mono_metadata_parse_array().
1313 */
1314 void
1315 mono_metadata_free_array (MonoArrayType *array)
1316 {
1317 g_free (array->sizes);
1318 g_free (array->lobounds);
1319 g_free (array);
1320 }
1321
1322 /*
1323 * need to add common field and param attributes combinations:
1324 * [out] param
1325 * public static
1326 * public static literal
1327 * private
1328 * private static
1329 * private static literal
1330 */
1331 static const MonoType
1332 builtin_types[] = {
1333 /* data, attrs, type, nmods, byref, pinned */
1334 {{NULL}, 0, MONO_TYPE_VOID, 0, 0, 0},
1335 {{NULL}, 0, MONO_TYPE_BOOLEAN, 0, 0, 0},
1336 {{NULL}, 0, MONO_TYPE_BOOLEAN, 0, 1, 0},
1337 {{NULL}, 0, MONO_TYPE_CHAR, 0, 0, 0},
1338 {{NULL}, 0, MONO_TYPE_CHAR, 0, 1, 0},
1339 {{NULL}, 0, MONO_TYPE_I1, 0, 0, 0},
1340 {{NULL}, 0, MONO_TYPE_I1, 0, 1, 0},
1341 {{NULL}, 0, MONO_TYPE_U1, 0, 0, 0},
1342 {{NULL}, 0, MONO_TYPE_U1, 0, 1, 0},
1343 {{NULL}, 0, MONO_TYPE_I2, 0, 0, 0},
1344 {{NULL}, 0, MONO_TYPE_I2, 0, 1, 0},
1345 {{NULL}, 0, MONO_TYPE_U2, 0, 0, 0},
1346 {{NULL}, 0, MONO_TYPE_U2, 0, 1, 0},
1347 {{NULL}, 0, MONO_TYPE_I4, 0, 0, 0},
1348 {{NULL}, 0, MONO_TYPE_I4, 0, 1, 0},
1349 {{NULL}, 0, MONO_TYPE_U4, 0, 0, 0},
1350 {{NULL}, 0, MONO_TYPE_U4, 0, 1, 0},
1351 {{NULL}, 0, MONO_TYPE_I8, 0, 0, 0},
1352 {{NULL}, 0, MONO_TYPE_I8, 0, 1, 0},
1353 {{NULL}, 0, MONO_TYPE_U8, 0, 0, 0},
1354 {{NULL}, 0, MONO_TYPE_U8, 0, 1, 0},
1355 {{NULL}, 0, MONO_TYPE_R4, 0, 0, 0},
1356 {{NULL}, 0, MONO_TYPE_R4, 0, 1, 0},
1357 {{NULL}, 0, MONO_TYPE_R8, 0, 0, 0},
1358 {{NULL}, 0, MONO_TYPE_R8, 0, 1, 0},
1359 {{NULL}, 0, MONO_TYPE_STRING, 0, 0, 0},
1360 {{NULL}, 0, MONO_TYPE_STRING, 0, 1, 0},
1361 {{NULL}, 0, MONO_TYPE_OBJECT, 0, 0, 0},
1362 {{NULL}, 0, MONO_TYPE_OBJECT, 0, 1, 0},
1363 {{NULL}, 0, MONO_TYPE_TYPEDBYREF, 0, 0, 0},
1364 {{NULL}, 0, MONO_TYPE_I, 0, 0, 0},
1365 {{NULL}, 0, MONO_TYPE_I, 0, 1, 0},
1366 {{NULL}, 0, MONO_TYPE_U, 0, 0, 0},
1367 {{NULL}, 0, MONO_TYPE_U, 0, 1, 0},
1368 };
1369
1370 #define NBUILTIN_TYPES() (sizeof (builtin_types) / sizeof (builtin_types [0]))
1371
1372 static GHashTable *type_cache = NULL;
1373 static int next_generic_inst_id = 0;
1374
1375 /* Protected by image_sets_mutex */
1376 static MonoImageSet *mscorlib_image_set;
1377 /* Protected by image_sets_mutex */
1378 static GPtrArray *image_sets;
1379 static mono_mutex_t image_sets_mutex;
1380
1381 static guint mono_generic_class_hash (gconstpointer data);
1382
1383 /*
1384 * MonoTypes with modifies are never cached, so we never check or use that field.
1385 */
1386 static guint
1387 mono_type_hash (gconstpointer data)
1388 {
1389 const MonoType *type = (const MonoType *) data;
1390 if (type->type == MONO_TYPE_GENERICINST)
1391 return mono_generic_class_hash (type->data.generic_class);
1392 else
1393 return type->type | (type->byref << 8) | (type->attrs << 9);
1394 }
1395
1396 static gint
1397 mono_type_equal (gconstpointer ka, gconstpointer kb)
1398 {
1399 const MonoType *a = (const MonoType *) ka;
1400 const MonoType *b = (const MonoType *) kb;
1401
1402 if (a->type != b->type || a->byref != b->byref || a->attrs != b->attrs || a->pinned != b->pinned)
1403 return 0;
1404 /* need other checks */
1405 return 1;
1406 }
1407
1408 guint
1409 mono_metadata_generic_inst_hash (gconstpointer data)
1410 {
1411 const MonoGenericInst *ginst = (const MonoGenericInst *) data;
1412 guint hash = 0;
1413 int i;
1414
1415 for (i = 0; i < ginst->type_argc; ++i) {
1416 hash *= 13;
1417 hash += mono_metadata_type_hash (ginst->type_argv [i]);
1418 }
1419
1420 return hash ^ (ginst->is_open << 8);
1421 }
1422
1423 static gboolean
1424 mono_generic_inst_equal_full (const MonoGenericInst *a, const MonoGenericInst *b, gboolean signature_only)
1425 {
1426 int i;
1427
1428 #ifndef MONO_SMALL_CONFIG
1429 if (a->id && b->id) {
1430 if (a->id == b->id)
1431 return TRUE;
1432 if (!signature_only)
1433 return FALSE;
1434 }
1435 #endif
1436
1437 if (a->is_open != b->is_open || a->type_argc != b->type_argc)
1438 return FALSE;
1439 for (i = 0; i < a->type_argc; ++i) {
1440 if (!do_mono_metadata_type_equal (a->type_argv [i], b->type_argv [i], signature_only))
1441 return FALSE;
1442 }
1443 return TRUE;
1444 }
1445
1446 gboolean
1447 mono_metadata_generic_inst_equal (gconstpointer ka, gconstpointer kb)
1448 {
1449 const MonoGenericInst *a = (const MonoGenericInst *) ka;
1450 const MonoGenericInst *b = (const MonoGenericInst *) kb;
1451
1452 return mono_generic_inst_equal_full (a, b, FALSE);
1453 }
1454
1455 static guint
1456 mono_generic_class_hash (gconstpointer data)
1457 {
1458 const MonoGenericClass *gclass = (const MonoGenericClass *) data;
1459 guint hash = mono_metadata_type_hash (&gclass->container_class->byval_arg);
1460
1461 hash *= 13;
1462 hash += gclass->is_tb_open;
1463 hash += mono_metadata_generic_context_hash (&gclass->context);
1464
1465 return hash;
1466 }
1467
1468 static gboolean
1469 mono_generic_class_equal (gconstpointer ka, gconstpointer kb)
1470 {
1471 const MonoGenericClass *a = (const MonoGenericClass *) ka;
1472 const MonoGenericClass *b = (const MonoGenericClass *) kb;
1473
1474 return _mono_metadata_generic_class_equal (a, b, FALSE);
1475 }
1476
1477 /**
1478 * mono_metadata_init:
1479 *
1480 * Initialize the global variables of this module.
1481 * This is a Mono runtime internal function.
1482 */
1483 void
1484 mono_metadata_init (void)
1485 {
1486 int i;
1487
1488 type_cache = g_hash_table_new (mono_type_hash, mono_type_equal);
1489
1490 for (i = 0; i < NBUILTIN_TYPES (); ++i)
1491 g_hash_table_insert (type_cache, (gpointer) &builtin_types [i], (gpointer) &builtin_types [i]);
1492
1493 mono_mutex_init_recursive (&image_sets_mutex);
1494 }
1495
1496 /**
1497 * mono_metadata_cleanup:
1498 *
1499 * Free all resources used by this module.
1500 * This is a Mono runtime internal function.
1501 */
1502 void
1503 mono_metadata_cleanup (void)
1504 {
1505 g_hash_table_destroy (type_cache);
1506 type_cache = NULL;
1507 g_ptr_array_free (image_sets, TRUE);
1508 image_sets = NULL;
1509 mono_mutex_destroy (&image_sets_mutex);
1510 }
1511
1512 /**
1513 * mono_metadata_parse_type:
1514 * @m: metadata context
1515 * @mode: king of type that may be found at @ptr
1516 * @opt_attrs: optional attributes to store in the returned type
1517 * @ptr: pointer to the type representation
1518 * @rptr: pointer updated to match the end of the decoded stream
1519 * @transient: whenever to allocate the result from the heap or from a mempool
1520 *
1521 * Decode a compressed type description found at @ptr in @m.
1522 * @mode can be one of MONO_PARSE_MOD_TYPE, MONO_PARSE_PARAM, MONO_PARSE_RET,
1523 * MONO_PARSE_FIELD, MONO_PARSE_LOCAL, MONO_PARSE_TYPE.
1524 * This function can be used to decode type descriptions in method signatures,
1525 * field signatures, locals signatures etc.
1526 *
1527 * To parse a generic type, `generic_container' points to the current class'es
1528 * (the `generic_container' field in the MonoClass) or the current generic method's
1529 * (stored in image->property_hash) generic container.
1530 * When we encounter any MONO_TYPE_VAR or MONO_TYPE_MVAR's, they're looked up in
1531 * this MonoGenericContainer.
1532 *
1533 * LOCKING: Acquires the loader lock.
1534 *
1535 * Returns: a #MonoType structure representing the decoded type.
1536 */
1537 static MonoType*
1538 mono_metadata_parse_type_internal (MonoImage *m, MonoGenericContainer *container, MonoParseTypeMode mode,
1539 short opt_attrs, gboolean transient, const char *ptr, const char **rptr)
1540 {
1541 MonoType *type, *cached;
1542 MonoType stype;
1543 gboolean byref = FALSE;
1544 gboolean pinned = FALSE;
1545 const char *tmp_ptr;
1546 int count = 0;
1547 gboolean found;
1548
1549 /*
1550 * According to the spec, custom modifiers should come before the byref
1551 * flag, but the IL produced by ilasm from the following signature:
1552 * object modopt(...) &
1553 * starts with a byref flag, followed by the modifiers. (bug #49802)
1554 * Also, this type seems to be different from 'object & modopt(...)'. Maybe
1555 * it would be better to treat byref as real type constructor instead of
1556 * a modifier...
1557 * Also, pinned should come before anything else, but some MSV++ produced
1558 * assemblies violate this (#bug 61990).
1559 */
1560
1561 /* Count the modifiers first */
1562 tmp_ptr = ptr;
1563 found = TRUE;
1564 while (found) {
1565 switch (*tmp_ptr) {
1566 case MONO_TYPE_PINNED:
1567 case MONO_TYPE_BYREF:
1568 ++tmp_ptr;
1569 break;
1570 case MONO_TYPE_CMOD_REQD:
1571 case MONO_TYPE_CMOD_OPT:
1572 count ++;
1573 mono_metadata_parse_custom_mod (m, NULL, tmp_ptr, &tmp_ptr);
1574 break;
1575 default:
1576 found = FALSE;
1577 }
1578 }
1579
1580 if (count) {
1581 int size;
1582
1583 size = MONO_SIZEOF_TYPE + ((gint32)count) * sizeof (MonoCustomMod);
1584 type = transient ? g_malloc0 (size) : mono_image_alloc0 (m, size);
1585 type->num_mods = count;
1586 if (count > 64)
1587 g_warning ("got more than 64 modifiers in type");
1588 } else {
1589 type = &stype;
1590 memset (type, 0, MONO_SIZEOF_TYPE);
1591 }
1592
1593 /* Parse pinned, byref and custom modifiers */
1594 found = TRUE;
1595 count = 0;
1596 while (found) {
1597 switch (*ptr) {
1598 case MONO_TYPE_PINNED:
1599 pinned = TRUE;
1600 ++ptr;
1601 break;
1602 case MONO_TYPE_BYREF:
1603 byref = TRUE;
1604 ++ptr;
1605 break;
1606 case MONO_TYPE_CMOD_REQD:
1607 case MONO_TYPE_CMOD_OPT:
1608 mono_metadata_parse_custom_mod (m, &(type->modifiers [count]), ptr, &ptr);
1609 count ++;
1610 break;
1611 default:
1612 found = FALSE;
1613 }
1614 }
1615
1616 type->attrs = opt_attrs;
1617 type->byref = byref;
1618 type->pinned = pinned ? 1 : 0;
1619
1620 if (!do_mono_metadata_parse_type (type, m, container, transient, ptr, &ptr)) {
1621 return NULL;
1622 }
1623
1624 if (rptr)
1625 *rptr = ptr;
1626
1627 if (!type->num_mods && !transient) {
1628 /* no need to free type here, because it is on the stack */
1629 if ((type->type == MONO_TYPE_CLASS || type->type == MONO_TYPE_VALUETYPE) && !type->pinned && !type->attrs) {
1630 MonoType *ret = type->byref ? &type->data.klass->this_arg : &type->data.klass->byval_arg;
1631
1632 /* Consider the case:
1633
1634 class Foo<T> { class Bar {} }
1635 class Test : Foo<Test>.Bar {}
1636
1637 When Foo<Test> is being expanded, 'Test' isn't yet initialized. It's actually in
1638 a really pristine state: it doesn't even know whether 'Test' is a reference or a value type.
1639
1640 We ensure that the MonoClass is in a state that we can canonicalize to:
1641
1642 klass->byval_arg.data.klass == klass
1643 klass->this_arg.data.klass == klass
1644
1645 If we can't canonicalize 'type', it doesn't matter, since later users of 'type' will do it.
1646
1647 LOCKING: even though we don't explicitly hold a lock, in the problematic case 'ret' is a field
1648 of a MonoClass which currently holds the loader lock. 'type' is local.
1649 */
1650 if (ret->data.klass == type->data.klass) {
1651 return ret;
1652 }
1653 }
1654 /* No need to use locking since nobody is modifying the hash table */
1655 if ((cached = g_hash_table_lookup (type_cache, type))) {
1656 return cached;
1657 }
1658 }
1659
1660 /* printf ("%x %x %c %s\n", type->attrs, type->num_mods, type->pinned ? 'p' : ' ', mono_type_full_name (type)); */
1661
1662 if (type == &stype) {
1663 type = transient ? g_malloc (MONO_SIZEOF_TYPE) : mono_image_alloc (m, MONO_SIZEOF_TYPE);
1664 memcpy (type, &stype, MONO_SIZEOF_TYPE);
1665 }
1666 return type;
1667 }
1668
1669 MonoType*
1670 mono_metadata_parse_type_full (MonoImage *m, MonoGenericContainer *container, MonoParseTypeMode mode,
1671 short opt_attrs, const char *ptr, const char **rptr)
1672 {
1673 return mono_metadata_parse_type_internal (m, container, mode, opt_attrs, FALSE, ptr, rptr);
1674 }
1675
1676 /*
1677 * LOCKING: Acquires the loader lock.
1678 */
1679 MonoType*
1680 mono_metadata_parse_type (MonoImage *m, MonoParseTypeMode mode, short opt_attrs,
1681 const char *ptr, const char **rptr)
1682 {
1683 return mono_metadata_parse_type_full (m, NULL, mode, opt_attrs, ptr, rptr);
1684 }
1685
1686 gboolean
1687 mono_metadata_method_has_param_attrs (MonoImage *m, int def)
1688 {
1689 MonoTableInfo *paramt = &m->tables [MONO_TABLE_PARAM];
1690 MonoTableInfo *methodt = &m->tables [MONO_TABLE_METHOD];
1691 guint lastp, i, param_index = mono_metadata_decode_row_col (methodt, def - 1, MONO_METHOD_PARAMLIST);
1692
1693 if (def < methodt->rows)
1694 lastp = mono_metadata_decode_row_col (methodt, def, MONO_METHOD_PARAMLIST);
1695 else
1696 lastp = m->tables [MONO_TABLE_PARAM].rows + 1;
1697
1698 for (i = param_index; i < lastp; ++i) {
1699 guint32 flags = mono_metadata_decode_row_col (paramt, i - 1, MONO_PARAM_FLAGS);
1700 if (flags)
1701 return TRUE;
1702 }
1703
1704 return FALSE;
1705 }
1706
1707 /*
1708 * mono_metadata_get_param_attrs:
1709 *
1710 * @m The image to loader parameter attributes from
1711 * @def method def token (one based)
1712 * @param_count number of params to decode including the return value
1713 *
1714 * Return the parameter attributes for the method whose MethodDef index is DEF. The
1715 * returned memory needs to be freed by the caller. If all the param attributes are
1716 * 0, then NULL is returned.
1717 */
1718 int*
1719 mono_metadata_get_param_attrs (MonoImage *m, int def, int param_count)
1720 {
1721 MonoTableInfo *paramt = &m->tables [MONO_TABLE_PARAM];
1722 MonoTableInfo *methodt = &m->tables [MONO_TABLE_METHOD];
1723 guint32 cols [MONO_PARAM_SIZE];
1724 guint lastp, i, param_index = mono_metadata_decode_row_col (methodt, def - 1, MONO_METHOD_PARAMLIST);
1725 int *pattrs = NULL;
1726
1727 if (def < methodt->rows)
1728 lastp = mono_metadata_decode_row_col (methodt, def, MONO_METHOD_PARAMLIST);
1729 else
1730 lastp = paramt->rows + 1;
1731
1732 for (i = param_index; i < lastp; ++i) {
1733 mono_metadata_decode_row (paramt, i - 1, cols, MONO_PARAM_SIZE);
1734 if (cols [MONO_PARAM_FLAGS]) {
1735 if (!pattrs)
1736 pattrs = g_new0 (int, param_count);
1737 /* at runtime we just ignore this kind of malformed file:
1738 * the verifier can signal the error to the user
1739 */
1740 if (cols [MONO_PARAM_SEQUENCE] >= param_count)
1741 continue;
1742 pattrs [cols [MONO_PARAM_SEQUENCE]] = cols [MONO_PARAM_FLAGS];
1743 }
1744 }
1745
1746 return pattrs;
1747 }
1748
1749 /*
1750 * mono_metadata_parse_signature_full:
1751 * @image: metadata context
1752 * @generic_container: generic container
1753 * @toke: metadata token
1754 *
1755 * Decode a method signature stored in the STANDALONESIG table
1756 *
1757 * LOCKING: Assumes the loader lock is held.
1758 *
1759 * Returns: a MonoMethodSignature describing the signature.
1760 */
1761 MonoMethodSignature*
1762 mono_metadata_parse_signature_full (MonoImage *image, MonoGenericContainer *generic_container, guint32 token)
1763 {
1764 MonoTableInfo *tables = image->tables;
1765 guint32 idx = mono_metadata_token_index (token);
1766 guint32 sig;
1767 const char *ptr;
1768
1769 if (image_is_dynamic (image))
1770 return mono_lookup_dynamic_token (image, token, NULL);
1771
1772 g_assert (mono_metadata_token_table(token) == MONO_TABLE_STANDALONESIG);
1773
1774 sig = mono_metadata_decode_row_col (&tables [MONO_TABLE_STANDALONESIG], idx - 1, 0);
1775
1776 ptr = mono_metadata_blob_heap (image, sig);
1777 mono_metadata_decode_blob_size (ptr, &ptr);
1778
1779 return mono_metadata_parse_method_signature_full (image, generic_container, 0, ptr, NULL);
1780 }
1781
1782 /*
1783 * mono_metadata_parse_signature:
1784 * @image: metadata context
1785 * @toke: metadata token
1786 *
1787 * Decode a method signature stored in the STANDALONESIG table
1788 *
1789 * Returns: a MonoMethodSignature describing the signature.
1790 */
1791 MonoMethodSignature*
1792 mono_metadata_parse_signature (MonoImage *image, guint32 token)
1793 {
1794 return mono_metadata_parse_signature_full (image, NULL, token);
1795 }
1796
1797 /*
1798 * mono_metadata_signature_alloc:
1799 * @image: metadata context
1800 * @nparmas: number of parameters in the signature
1801 *
1802 * Allocate a MonoMethodSignature structure with the specified number of params.
1803 * The return type and the params types need to be filled later.
1804 * This is a Mono runtime internal function.
1805 *
1806 * LOCKING: Assumes the loader lock is held.
1807 *
1808 * Returns: the new MonoMethodSignature structure.
1809 */
1810 MonoMethodSignature*
1811 mono_metadata_signature_alloc (MonoImage *m, guint32 nparams)
1812 {
1813 MonoMethodSignature *sig;
1814
1815 sig = mono_image_alloc0 (m, MONO_SIZEOF_METHOD_SIGNATURE + ((gint32)nparams) * sizeof (MonoType*));
1816 sig->param_count = nparams;
1817 sig->sentinelpos = -1;
1818
1819 return sig;
1820 }
1821
1822 static MonoMethodSignature*
1823 mono_metadata_signature_dup_internal (MonoImage *image, MonoMemPool *mp, MonoMethodSignature *sig)
1824 {
1825 int sigsize;
1826 MonoMethodSignature *ret;
1827 sigsize = MONO_SIZEOF_METHOD_SIGNATURE + sig->param_count * sizeof (MonoType *);
1828
1829 if (image) {
1830 ret = mono_image_alloc (image, sigsize);
1831 } else if (mp) {
1832 ret = mono_mempool_alloc (mp, sigsize);
1833 } else {
1834 ret = g_malloc (sigsize);
1835 }
1836 memcpy (ret, sig, sigsize);
1837 return ret;
1838 }
1839
1840 MonoMethodSignature*
1841 mono_metadata_signature_dup_full (MonoImage *image, MonoMethodSignature *sig)
1842 {
1843 return mono_metadata_signature_dup_internal (image, NULL, sig);
1844 }
1845
1846 /*The mempool is accessed without synchronization*/
1847 MonoMethodSignature*
1848 mono_metadata_signature_dup_mempool (MonoMemPool *mp, MonoMethodSignature *sig)
1849 {
1850 return mono_metadata_signature_dup_internal (NULL, mp, sig);
1851 }
1852
1853 /*
1854 * mono_metadata_signature_dup:
1855 * @sig: method signature
1856 *
1857 * Duplicate an existing MonoMethodSignature so it can be modified.
1858 * This is a Mono runtime internal function.
1859 *
1860 * Returns: the new MonoMethodSignature structure.
1861 */
1862 MonoMethodSignature*
1863 mono_metadata_signature_dup (MonoMethodSignature *sig)
1864 {
1865 return mono_metadata_signature_dup_full (NULL, sig);
1866 }
1867
1868 /*
1869 * mono_metadata_signature_size:
1870 *
1871 * Return the amount of memory allocated to SIG.
1872 */
1873 guint32
1874 mono_metadata_signature_size (MonoMethodSignature *sig)
1875 {
1876 return MONO_SIZEOF_METHOD_SIGNATURE + sig->param_count * sizeof (MonoType *);
1877 }
1878
1879 /*
1880 * mono_metadata_parse_method_signature:
1881 * @m: metadata context
1882 * @generic_container: generics container
1883 * @def: the MethodDef index or 0 for Ref signatures.
1884 * @ptr: pointer to the signature metadata representation
1885 * @rptr: pointer updated to match the end of the decoded stream
1886 *
1887 * Decode a method signature stored at @ptr.
1888 * This is a Mono runtime internal function.
1889 *
1890 * LOCKING: Assumes the loader lock is held.
1891 *
1892 * Returns: a MonoMethodSignature describing the signature.
1893 */
1894 MonoMethodSignature *
1895 mono_metadata_parse_method_signature_full (MonoImage *m, MonoGenericContainer *container,
1896 int def, const char *ptr, const char **rptr)
1897 {
1898 MonoMethodSignature *method;
1899 int i, *pattrs = NULL;
1900 guint32 hasthis = 0, explicit_this = 0, call_convention, param_count;
1901 guint32 gen_param_count = 0;
1902 gboolean is_open = FALSE;
1903
1904 if (*ptr & 0x10)
1905 gen_param_count = 1;
1906 if (*ptr & 0x20)
1907 hasthis = 1;
1908 if (*ptr & 0x40)
1909 explicit_this = 1;
1910 call_convention = *ptr & 0x0F;
1911 ptr++;
1912 if (gen_param_count)
1913 gen_param_count = mono_metadata_decode_value (ptr, &ptr);
1914 param_count = mono_metadata_decode_value (ptr, &ptr);
1915
1916 if (def)
1917 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 */
1918
1919 method = mono_metadata_signature_alloc (m, param_count);
1920 method->hasthis = hasthis;
1921 method->explicit_this = explicit_this;
1922 method->call_convention = call_convention;
1923 method->generic_param_count = gen_param_count;
1924
1925 if (call_convention != 0xa) {
1926 method->ret = mono_metadata_parse_type_full (m, container, MONO_PARSE_RET, pattrs ? pattrs [0] : 0, ptr, &ptr);
1927 if (!method->ret) {
1928 mono_metadata_free_method_signature (method);
1929 g_free (pattrs);
1930 return NULL;
1931 }
1932 is_open = mono_class_is_open_constructed_type (method->ret);
1933 }
1934
1935 for (i = 0; i < method->param_count; ++i) {
1936 if (*ptr == MONO_TYPE_SENTINEL) {
1937 if (method->call_convention != MONO_CALL_VARARG || def) {
1938 g_warning ("found sentinel for methoddef or no vararg method 0x%08x on image %s", def, m->name);
1939 g_free (pattrs);
1940 return NULL;
1941 }
1942 if (method->sentinelpos >= 0) {
1943 g_warning ("found sentinel twice in the same signature for method 0x%08x on image %s", def, m->name);
1944 g_free (pattrs);
1945 return NULL;
1946 }
1947 method->sentinelpos = i;
1948 ptr++;
1949 }
1950 method->params [i] = mono_metadata_parse_type_full (m, container, MONO_PARSE_PARAM, pattrs ? pattrs [i+1] : 0, ptr, &ptr);
1951 if (!method->params [i]) {
1952 mono_metadata_free_method_signature (method);
1953 g_free (pattrs);
1954 return NULL;
1955 }
1956 if (!is_open)
1957 is_open = mono_class_is_open_constructed_type (method->params [i]);
1958 }
1959
1960 /* The sentinel could be missing if the caller does not pass any additional arguments */
1961 if (!def && method->call_convention == MONO_CALL_VARARG && method->sentinelpos < 0)
1962 method->sentinelpos = method->param_count;
1963
1964 method->has_type_parameters = is_open;
1965
1966 if (def && (method->call_convention == MONO_CALL_VARARG))
1967 method->sentinelpos = method->param_count;
1968
1969 g_free (pattrs);
1970
1971 if (rptr)
1972 *rptr = ptr;
1973 /*
1974 * Add signature to a cache and increase ref count...
1975 */
1976
1977 return method;
1978 }
1979
1980 /*
1981 * mono_metadata_parse_method_signature:
1982 * @m: metadata context
1983 * @def: the MethodDef index or 0 for Ref signatures.
1984 * @ptr: pointer to the signature metadata representation
1985 * @rptr: pointer updated to match the end of the decoded stream
1986 *
1987 * Decode a method signature stored at @ptr.
1988 * This is a Mono runtime internal function.
1989 *
1990 * LOCKING: Assumes the loader lock is held.
1991 *
1992 * Returns: a MonoMethodSignature describing the signature.
1993 */
1994 MonoMethodSignature *
1995 mono_metadata_parse_method_signature (MonoImage *m, int def, const char *ptr, const char **rptr)
1996 {
1997 return mono_metadata_parse_method_signature_full (m, NULL, def, ptr, rptr);
1998 }
1999
2000 /*
2001 * mono_metadata_free_method_signature:
2002 * @sig: signature to destroy
2003 *
2004 * Free the memory allocated in the signature @sig.
2005 * This method needs to be robust and work also on partially-built
2006 * signatures, so it does extra checks.
2007 */
2008 void
2009 mono_metadata_free_method_signature (MonoMethodSignature *sig)
2010 {
2011 /* Everything is allocated from mempools */
2012 /*
2013 int i;
2014 if (sig->ret)
2015 mono_metadata_free_type (sig->ret);
2016 for (i = 0; i < sig->param_count; ++i) {
2017 if (sig->params [i])
2018 mono_metadata_free_type (sig->params [i]);
2019 }
2020 */
2021 }
2022
2023 void
2024 mono_metadata_free_inflated_signature (MonoMethodSignature *sig)
2025 {
2026 int i;
2027
2028 /* Allocated in inflate_generic_signature () */
2029 if (sig->ret)
2030 mono_metadata_free_type (sig->ret);
2031 for (i = 0; i < sig->param_count; ++i) {
2032 if (sig->params [i])
2033 mono_metadata_free_type (sig->params [i]);
2034 }
2035 g_free (sig);
2036 }
2037
2038 static gboolean
2039 inflated_method_equal (gconstpointer a, gconstpointer b)
2040 {
2041 const MonoMethodInflated *ma = a;
2042 const MonoMethodInflated *mb = b;
2043 if (ma->declaring != mb->declaring)
2044 return FALSE;
2045 if (ma->method.method.is_mb_open != mb->method.method.is_mb_open)
2046 return FALSE;
2047 return mono_metadata_generic_context_equal (&ma->context, &mb->context);
2048 }
2049
2050 static guint
2051 inflated_method_hash (gconstpointer a)
2052 {
2053 const MonoMethodInflated *ma = a;
2054 return (mono_metadata_generic_context_hash (&ma->context) ^ mono_aligned_addr_hash (ma->declaring)) + ma->method.method.is_mb_open;
2055 }
2056
2057 static gboolean
2058 inflated_signature_equal (gconstpointer a, gconstpointer b)
2059 {
2060 const MonoInflatedMethodSignature *sig1 = a;
2061 const MonoInflatedMethodSignature *sig2 = b;
2062
2063 /* sig->sig is assumed to be canonized */
2064 if (sig1->sig != sig2->sig)
2065 return FALSE;
2066 /* The generic instances are canonized */
2067 return mono_metadata_generic_context_equal (&sig1->context, &sig2->context);
2068 }
2069
2070 static guint
2071 inflated_signature_hash (gconstpointer a)
2072 {
2073 const MonoInflatedMethodSignature *sig = a;
2074
2075 /* sig->sig is assumed to be canonized */
2076 return mono_metadata_generic_context_hash (&sig->context) ^ mono_aligned_addr_hash (sig->sig);
2077 }
2078
2079 /*static void
2080 dump_ginst (MonoGenericInst *ginst)
2081 {
2082 int i;
2083 char *name;
2084
2085 g_print ("Ginst: <");
2086 for (i = 0; i < ginst->type_argc; ++i) {
2087 if (i != 0)
2088 g_print (", ");
2089 name = mono_type_get_name (ginst->type_argv [i]);
2090 g_print ("%s", name);
2091 g_free (name);
2092 }
2093 g_print (">");
2094 }*/
2095
2096 static gboolean type_in_image (MonoType *type, MonoImage *image);
2097
2098 static gboolean
2099 signature_in_image (MonoMethodSignature *sig, MonoImage *image)
2100 {
2101 gpointer iter = NULL;
2102 MonoType *p;
2103
2104 while ((p = mono_signature_get_params (sig, &iter)) != NULL)
2105 if (type_in_image (p, image))
2106 return TRUE;
2107
2108 return type_in_image (mono_signature_get_return_type (sig), image);
2109 }
2110
2111 static gboolean
2112 ginst_in_image (MonoGenericInst *ginst, MonoImage *image)
2113 {
2114 int i;
2115
2116 for (i = 0; i < ginst->type_argc; ++i) {
2117 if (type_in_image (ginst->type_argv [i], image))
2118 return TRUE;
2119 }
2120
2121 return FALSE;
2122 }
2123
2124 static gboolean
2125 gclass_in_image (MonoGenericClass *gclass, MonoImage *image)
2126 {
2127 return gclass->container_class->image == image ||
2128 ginst_in_image (gclass->context.class_inst, image);
2129 }
2130
2131 static gboolean
2132 type_in_image (MonoType *type, MonoImage *image)
2133 {
2134 retry:
2135 switch (type->type) {
2136 case MONO_TYPE_GENERICINST:
2137 return gclass_in_image (type->data.generic_class, image);
2138 case MONO_TYPE_PTR:
2139 type = type->data.type;
2140 goto retry;
2141 case MONO_TYPE_SZARRAY:
2142 type = &type->data.klass->byval_arg;
2143 goto retry;
2144 case MONO_TYPE_ARRAY:
2145 type = &type->data.array->eklass->byval_arg;
2146 goto retry;
2147 case MONO_TYPE_FNPTR:
2148 return signature_in_image (type->data.method, image);
2149 case MONO_TYPE_VAR: {
2150 MonoGenericContainer *container = mono_type_get_generic_param_owner (type);
2151 if (container) {
2152 g_assert (!container->is_method);
2153 /*
2154 * FIXME: The following check is here solely
2155 * for monodis, which uses the internal
2156 * function
2157 * mono_metadata_load_generic_params(). The
2158 * caller of that function needs to fill in
2159 * owner->klass or owner->method of the
2160 * returned struct, but monodis doesn't do
2161 * that. The image unloading depends on that,
2162 * however, so a crash results without this
2163 * check.
2164 */
2165 if (!container->owner.klass)
2166 return container->image == image;
2167 return container->owner.klass->image == image;
2168 } else {
2169 return type->data.generic_param->image == image;
2170 }
2171 }
2172 case MONO_TYPE_MVAR: {
2173 MonoGenericContainer *container = mono_type_get_generic_param_owner (type);
2174 if (type->data.generic_param->image == image)
2175 return TRUE;
2176 if (container) {
2177 g_assert (container->is_method);
2178 if (!container->owner.method)
2179 /* RefEmit created generic param whose method is not finished */
2180 return container->image == image;
2181 return container->owner.method->klass->image == image;
2182 } else {
2183 return type->data.generic_param->image == image;
2184 }
2185 }
2186 default:
2187 /* At this point, we should've avoided all potential allocations in mono_class_from_mono_type () */
2188 return image == mono_class_from_mono_type (type)->image;
2189 }
2190 }
2191
2192 static inline void
2193 image_sets_lock (void)
2194 {
2195 mono_mutex_lock (&image_sets_mutex);
2196 }
2197
2198 static inline void
2199 image_sets_unlock (void)
2200 {
2201 mono_mutex_unlock (&image_sets_mutex);
2202 }
2203
2204 /*
2205 * get_image_set:
2206 *
2207 * Return a MonoImageSet representing the set of images in IMAGES.
2208 */
2209 static MonoImageSet*
2210 get_image_set (MonoImage **images, int nimages)
2211 {
2212 int i, j, k;
2213 MonoImageSet *set;
2214 GSList *l;
2215
2216 /* Common case */
2217 if (nimages == 1 && images [0] == mono_defaults.corlib && mscorlib_image_set)
2218 return mscorlib_image_set;
2219
2220 /* Happens with empty generic instances */
2221 if (nimages == 0)
2222 return mscorlib_image_set;
2223
2224 image_sets_lock ();
2225
2226 if (!image_sets)
2227 image_sets = g_ptr_array_new ();
2228
2229 if (images [0] == mono_defaults.corlib && nimages > 1)
2230 l = images [1]->image_sets;
2231 else
2232 l = images [0]->image_sets;
2233
2234 set = NULL;
2235 for (; l; l = l->next) {
2236 set = l->data;
2237
2238 if (set->nimages == nimages) {
2239 for (j = 0; j < nimages; ++j) {
2240 for (k = 0; k < nimages; ++k)
2241 if (set->images [k] == images [j])
2242 break;
2243 if (k == nimages)
2244 /* Not found */
2245 break;
2246 }
2247 if (j == nimages)
2248 /* Found */
2249 break;
2250 }
2251 }
2252
2253 if (!l) {
2254 /* Not found */
2255 set = g_new0 (MonoImageSet, 1);
2256 set->nimages = nimages;
2257 set->images = g_new0 (MonoImage*, nimages);
2258 mono_mutex_init_recursive (&set->lock);
2259 for (i = 0; i < nimages; ++i)
2260 set->images [i] = images [i];
2261 set->gclass_cache = g_hash_table_new_full (mono_generic_class_hash, mono_generic_class_equal, NULL, (GDestroyNotify)free_generic_class);
2262 set->ginst_cache = g_hash_table_new_full (mono_metadata_generic_inst_hash, mono_metadata_generic_inst_equal, NULL, (GDestroyNotify)free_generic_inst);
2263 set->gmethod_cache = g_hash_table_new_full (inflated_method_hash, inflated_method_equal, NULL, (GDestroyNotify)free_inflated_method);
2264 set->gsignature_cache = g_hash_table_new_full (inflated_signature_hash, inflated_signature_equal, NULL, (GDestroyNotify)free_inflated_signature);
2265
2266 for (i = 0; i < nimages; ++i)
2267 set->images [i]->image_sets = g_slist_prepend (set->images [i]->image_sets, set);
2268
2269 g_ptr_array_add (image_sets, set);
2270 }
2271
2272 if (nimages == 1 && images [0] == mono_defaults.corlib) {
2273 mono_memory_barrier ();
2274 mscorlib_image_set = set;
2275 }
2276
2277 image_sets_unlock ();
2278
2279 return set;
2280 }
2281
2282 static void
2283 delete_image_set (MonoImageSet *set)
2284 {
2285 int i;
2286
2287 g_hash_table_destroy (set->gclass_cache);
2288 g_hash_table_destroy (set->ginst_cache);
2289 g_hash_table_destroy (set->gmethod_cache);
2290 g_hash_table_destroy (set->gsignature_cache);
2291
2292 image_sets_lock ();
2293
2294 for (i = 0; i < set->nimages; ++i)
2295 set->images [i]->image_sets = g_slist_remove (set->images [i]->image_sets, set);
2296
2297 g_ptr_array_remove (image_sets, set);
2298
2299 image_sets_unlock ();
2300
2301 if (set->mempool)
2302 mono_mempool_destroy (set->mempool);
2303 g_free (set->images);
2304 mono_mutex_destroy (&set->lock);
2305 g_free (set);
2306 }
2307
2308 static void
2309 mono_image_set_lock (MonoImageSet *set)
2310 {
2311 mono_mutex_lock (&set->lock);
2312 }
2313
2314 static void
2315 mono_image_set_unlock (MonoImageSet *set)
2316 {
2317 mono_mutex_unlock (&set->lock);
2318 }
2319
2320 gpointer
2321 mono_image_set_alloc (MonoImageSet *set, guint size)
2322 {
2323 gpointer res;
2324
2325 mono_image_set_lock (set);
2326 if (!set->mempool)
2327 set->mempool = mono_mempool_new_size (1024);
2328 res = mono_mempool_alloc (set->mempool, size);
2329 mono_image_set_unlock (set);
2330
2331 return res;
2332 }
2333
2334 gpointer
2335 mono_image_set_alloc0 (MonoImageSet *set, guint size)
2336 {
2337 gpointer res;
2338
2339 mono_image_set_lock (set);
2340 if (!set->mempool)
2341 set->mempool = mono_mempool_new_size (1024);
2342 res = mono_mempool_alloc0 (set->mempool, size);
2343 mono_image_set_unlock (set);
2344
2345 return res;
2346 }
2347
2348 char*
2349 mono_image_set_strdup (MonoImageSet *set, const char *s)
2350 {
2351 char *res;
2352
2353 mono_image_set_lock (set);
2354 if (!set->mempool)
2355 set->mempool = mono_mempool_new_size (1024);
2356 res = mono_mempool_strdup (set->mempool, s);
2357 mono_image_set_unlock (set);
2358
2359 return res;
2360 }
2361
2362 /*
2363 * Structure used by the collect_..._images functions to store the image list.
2364 */
2365 typedef struct {
2366 MonoImage *image_buf [64];
2367 MonoImage **images;
2368 int nimages, images_len;
2369 } CollectData;
2370
2371 static void
2372 collect_data_init (CollectData *data)
2373 {
2374 data->images = data->image_buf;
2375 data->images_len = 64;
2376 data->nimages = 0;
2377 }
2378
2379 static void
2380 collect_data_free (CollectData *data)
2381 {
2382 if (data->images != data->image_buf)
2383 g_free (data->images);
2384 }
2385
2386 static void
2387 enlarge_data (CollectData *data)
2388 {
2389 int new_len = data->images_len < 16 ? 16 : data->images_len * 2;
2390 MonoImage **d = g_new (MonoImage *, new_len);
2391
2392 // FIXME: test this
2393 g_assert_not_reached ();
2394 memcpy (d, data->images, data->images_len);
2395 if (data->images != data->image_buf)
2396 g_free (data->images);
2397 data->images = d;
2398 data->images_len = new_len;
2399 }
2400
2401 static inline void
2402 add_image (MonoImage *image, CollectData *data)
2403 {
2404 int i;
2405
2406 /* The arrays are small, so use a linear search instead of a hash table */
2407 for (i = 0; i < data->nimages; ++i)
2408 if (data->images [i] == image)
2409 return;
2410
2411 if (data->nimages == data->images_len)
2412 enlarge_data (data);
2413
2414 data->images [data->nimages ++] = image;
2415 }
2416
2417 static void
2418 collect_type_images (MonoType *type, CollectData *data);
2419
2420 static void
2421 collect_ginst_images (MonoGenericInst *ginst, CollectData *data)
2422 {
2423 int i;
2424
2425 for (i = 0; i < ginst->type_argc; ++i) {
2426 collect_type_images (ginst->type_argv [i], data);
2427 }
2428 }
2429
2430 static void
2431 collect_gclass_images (MonoGenericClass *gclass, CollectData *data)
2432 {
2433 add_image (gclass->container_class->image, data);
2434 if (gclass->context.class_inst)
2435 collect_ginst_images (gclass->context.class_inst, data);
2436 }
2437
2438 static void
2439 collect_signature_images (MonoMethodSignature *sig, CollectData *data)
2440 {
2441 gpointer iter = NULL;
2442 MonoType *p;
2443
2444 collect_type_images (mono_signature_get_return_type (sig), data);
2445 while ((p = mono_signature_get_params (sig, &iter)) != NULL)
2446 collect_type_images (p, data);
2447 }
2448
2449 static void
2450 collect_inflated_signature_images (MonoInflatedMethodSignature *sig, CollectData *data)
2451 {
2452 collect_signature_images (sig->sig, data);
2453 if (sig->context.class_inst)
2454 collect_ginst_images (sig->context.class_inst, data);
2455 if (sig->context.method_inst)
2456 collect_ginst_images (sig->context.method_inst, data);
2457 }
2458
2459 static void
2460 collect_method_images (MonoMethodInflated *method, CollectData *data)
2461 {
2462 MonoMethod *m = method->declaring;
2463
2464 add_image (method->declaring->klass->image, data);
2465 if (method->context.class_inst)
2466 collect_ginst_images (method->context.class_inst, data);
2467 if (method->context.method_inst)
2468 collect_ginst_images (method->context.method_inst, data);
2469 /*
2470 * Dynamic assemblies have no references, so the images they depend on can be unloaded before them.
2471 */
2472 if (image_is_dynamic (m->klass->image))
2473 collect_signature_images (mono_method_signature (m), data);
2474 }
2475
2476 static void
2477 collect_type_images (MonoType *type, CollectData *data)
2478 {
2479 retry:
2480 switch (type->type) {
2481 case MONO_TYPE_GENERICINST:
2482 collect_gclass_images (type->data.generic_class, data);
2483 break;
2484 case MONO_TYPE_PTR:
2485 type = type->data.type;
2486 goto retry;
2487 case MONO_TYPE_SZARRAY:
2488 type = &type->data.klass->byval_arg;
2489 goto retry;
2490 case MONO_TYPE_ARRAY:
2491 type = &type->data.array->eklass->byval_arg;
2492 goto retry;
2493 case MONO_TYPE_FNPTR:
2494 //return signature_in_image (type->data.method, image);
2495 g_assert_not_reached ();
2496 case MONO_TYPE_VAR: {
2497 MonoGenericContainer *container = mono_type_get_generic_param_owner (type);
2498 if (container) {
2499 g_assert (!container->is_method);
2500 /*
2501 * FIXME: The following check is here solely
2502 * for monodis, which uses the internal
2503 * function
2504 * mono_metadata_load_generic_params(). The
2505 * caller of that function needs to fill in
2506 * owner->klass or owner->method of the
2507 * returned struct, but monodis doesn't do
2508 * that. The image unloading depends on that,
2509 * however, so a crash results without this
2510 * check.
2511 */
2512 if (!container->owner.klass)
2513 add_image (container->image, data);
2514 else
2515 add_image (container->owner.klass->image, data);
2516 } else {
2517 add_image (type->data.generic_param->image, data);
2518 }
2519 }
2520 break;
2521 case MONO_TYPE_MVAR: {
2522 MonoGenericContainer *container = mono_type_get_generic_param_owner (type);
2523 if (type->data.generic_param->image)
2524 add_image (type->data.generic_param->image, data);
2525 if (container) {
2526 if (!container->owner.method) {
2527 /* RefEmit created generic param whose method is not finished */
2528 add_image (container->image, data);
2529 } else {
2530 g_assert (container->is_method);
2531 add_image (container->owner.method->klass->image, data);
2532 }
2533 } else {
2534 add_image (type->data.generic_param->image, data);
2535 }
2536 }
2537 break;
2538 case MONO_TYPE_CLASS:
2539 case MONO_TYPE_VALUETYPE:
2540 add_image (mono_class_from_mono_type (type)->image, data);
2541 break;
2542 default:
2543 add_image (mono_defaults.corlib, data);
2544 }
2545 }
2546
2547 typedef struct {
2548 MonoImage *image;
2549 GSList *list;
2550 } CleanForImageUserData;
2551
2552 static gboolean
2553 steal_gclass_in_image (gpointer key, gpointer value, gpointer data)
2554 {
2555 MonoGenericClass *gclass = key;
2556 CleanForImageUserData *user_data = data;
2557
2558 g_assert (gclass_in_image (gclass, user_data->image));
2559
2560 user_data->list = g_slist_prepend (user_data->list, gclass);
2561 return TRUE;
2562 }
2563
2564 static gboolean
2565 steal_ginst_in_image (gpointer key, gpointer value, gpointer data)
2566 {
2567 MonoGenericInst *ginst = key;
2568 CleanForImageUserData *user_data = data;
2569
2570 // This doesn't work during corlib compilation
2571 //g_assert (ginst_in_image (ginst, user_data->image));
2572
2573 user_data->list = g_slist_prepend (user_data->list, ginst);
2574 return TRUE;
2575 }
2576
2577 static gboolean
2578 inflated_method_in_image (gpointer key, gpointer value, gpointer data)
2579 {
2580 MonoImage *image = data;
2581 MonoMethodInflated *method = key;
2582
2583 // FIXME:
2584 // https://bugzilla.novell.com/show_bug.cgi?id=458168
2585 g_assert (method->declaring->klass->image == image ||
2586 (method->context.class_inst && ginst_in_image (method->context.class_inst, image)) ||
2587 (method->context.method_inst && ginst_in_image (method->context.method_inst, image)) || (((MonoMethod*)method)->signature && signature_in_image (mono_method_signature ((MonoMethod*)method), image)));
2588
2589 return TRUE;
2590 }
2591
2592 static gboolean
2593 inflated_signature_in_image (gpointer key, gpointer value, gpointer data)
2594 {
2595 MonoImage *image = data;
2596 MonoInflatedMethodSignature *sig = key;
2597
2598 return signature_in_image (sig->sig, image) ||
2599 (sig->context.class_inst && ginst_in_image (sig->context.class_inst, image)) ||
2600 (sig->context.method_inst && ginst_in_image (sig->context.method_inst, image));
2601 }
2602
2603 static void
2604 check_gmethod (gpointer key, gpointer value, gpointer data)
2605 {
2606 MonoMethodInflated *method = key;
2607 MonoImage *image = data;
2608
2609 if (method->context.class_inst)
2610 g_assert (!ginst_in_image (method->context.class_inst, image));
2611 if (method->context.method_inst)
2612 g_assert (!ginst_in_image (method->context.method_inst, image));
2613 if (((MonoMethod*)method)->signature)
2614 g_assert (!signature_in_image (mono_method_signature ((MonoMethod*)method), image));
2615 }
2616
2617 /*
2618 * check_image_sets:
2619 *
2620 * Run a consistency check on the image set data structures.
2621 */
2622 static G_GNUC_UNUSED void
2623 check_image_sets (MonoImage *image)
2624 {
2625 int i;
2626 GSList *l = image->image_sets;
2627
2628 if (!image_sets)
2629 return;
2630
2631 for (i = 0; i < image_sets->len; ++i) {
2632 MonoImageSet *set = g_ptr_array_index (image_sets, i);
2633
2634 if (!g_slist_find (l, set)) {
2635 g_hash_table_foreach (set->gmethod_cache, check_gmethod, image);
2636 }
2637 }
2638 }
2639
2640 void
2641 mono_metadata_clean_for_image (MonoImage *image)
2642 {
2643 CleanForImageUserData ginst_data, gclass_data;
2644 GSList *l, *set_list;
2645
2646 //check_image_sets (image);
2647
2648 /*
2649 * The data structures could reference each other so we delete them in two phases.
2650 * This is required because of the hashing functions in gclass/ginst_cache.
2651 */
2652 ginst_data.image = gclass_data.image = image;
2653 ginst_data.list = gclass_data.list = NULL;
2654
2655 /* Collect the items to delete */
2656 /* delete_image_set () modifies the lists so make a copy */
2657 for (l = image->image_sets; l; l = l->next) {
2658 MonoImageSet *set = l->data;
2659
2660 mono_image_set_lock (set);
2661 g_hash_table_foreach_steal (set->gclass_cache, steal_gclass_in_image, &gclass_data);
2662 g_hash_table_foreach_steal (set->ginst_cache, steal_ginst_in_image, &ginst_data);
2663 g_hash_table_foreach_remove (set->gmethod_cache, inflated_method_in_image, image);
2664 g_hash_table_foreach_remove (set->gsignature_cache, inflated_signature_in_image, image);
2665 mono_image_set_unlock (set);
2666 }
2667
2668 /* Delete the removed items */
2669 for (l = ginst_data.list; l; l = l->next)
2670 free_generic_inst (l->data);
2671 for (l = gclass_data.list; l; l = l->next)
2672 free_generic_class (l->data);
2673 g_slist_free (ginst_data.list);
2674 g_slist_free (gclass_data.list);
2675 /* delete_image_set () modifies the lists so make a copy */
2676 set_list = g_slist_copy (image->image_sets);
2677 for (l = set_list; l; l = l->next) {
2678 MonoImageSet *set = l->data;
2679
2680 delete_image_set (set);
2681 }
2682 g_slist_free (set_list);
2683 }
2684
2685 static void
2686 free_inflated_method (MonoMethodInflated *imethod)
2687 {
2688 int i;
2689 MonoMethod *method = (MonoMethod*)imethod;
2690
2691 mono_marshal_free_inflated_wrappers (method);
2692
2693 if (method->signature)
2694 mono_metadata_free_inflated_signature (method->signature);
2695
2696 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))) {
2697 MonoMethodHeader *header = imethod->header;
2698
2699 if (header) {
2700 /* Allocated in inflate_generic_header () */
2701 for (i = 0; i < header->num_locals; ++i)
2702 mono_metadata_free_type (header->locals [i]);
2703 g_free (header->clauses);
2704 g_free (header);
2705 }
2706 }
2707
2708 g_free (method);
2709 }
2710
2711 static void
2712 free_generic_inst (MonoGenericInst *ginst)
2713 {
2714 int i;
2715
2716 /* The ginst itself is allocated from the image set mempool */
2717 for (i = 0; i < ginst->type_argc; ++i)
2718 mono_metadata_free_type (ginst->type_argv [i]);
2719 }
2720
2721 static void
2722 free_generic_class (MonoGenericClass *gclass)
2723 {
2724 /* The gclass itself is allocated from the image set mempool */
2725 if (gclass->is_dynamic)
2726 mono_reflection_free_dynamic_generic_class (gclass);
2727 if (gclass->cached_class && gclass->cached_class->interface_id)
2728 mono_unload_interface_id (gclass->cached_class);
2729 }
2730
2731 static void
2732 free_inflated_signature (MonoInflatedMethodSignature *sig)
2733 {
2734 mono_metadata_free_inflated_signature (sig->sig);
2735 g_free (sig);
2736 }
2737
2738 MonoMethodInflated*
2739 mono_method_inflated_lookup (MonoMethodInflated* method, gboolean cache)
2740 {
2741 CollectData data;
2742 MonoImageSet *set;
2743 gpointer res;
2744
2745 collect_data_init (&data);
2746
2747 collect_method_images (method, &data);
2748
2749 set = get_image_set (data.images, data.nimages);
2750
2751 collect_data_free (&data);
2752
2753 mono_image_set_lock (set);
2754 res = g_hash_table_lookup (set->gmethod_cache, method);
2755 if (!res && cache) {
2756 g_hash_table_insert (set->gmethod_cache, method, method);
2757 res = method;
2758 }
2759
2760 mono_image_set_unlock (set);
2761 return res;
2762 }
2763
2764 /*
2765 * mono_metadata_get_inflated_signature:
2766 *
2767 * Given an inflated signature and a generic context, return a canonical copy of the
2768 * signature. The returned signature might be equal to SIG or it might be a cached copy.
2769 */
2770 MonoMethodSignature *
2771 mono_metadata_get_inflated_signature (MonoMethodSignature *sig, MonoGenericContext *context)
2772 {
2773 MonoInflatedMethodSignature helper;
2774 MonoInflatedMethodSignature *res;
2775 CollectData data;
2776 MonoImageSet *set;
2777
2778 helper.sig = sig;
2779 helper.context.class_inst = context->class_inst;
2780 helper.context.method_inst = context->method_inst;
2781
2782 collect_data_init (&data);
2783
2784 collect_inflated_signature_images (&helper, &data);
2785
2786 set = get_image_set (data.images, data.nimages);
2787
2788 collect_data_free (&data);
2789
2790 mono_image_set_lock (set);
2791
2792 res = g_hash_table_lookup (set->gsignature_cache, &helper);
2793 if (!res) {
2794 res = g_new0 (MonoInflatedMethodSignature, 1);
2795 res->sig = sig;
2796 res->context.class_inst = context->class_inst;
2797 res->context.method_inst = context->method_inst;
2798 g_hash_table_insert (set->gsignature_cache, res, res);
2799 }
2800
2801 mono_image_set_unlock (set);
2802
2803 return res->sig;
2804 }
2805
2806 /*
2807 * mono_metadata_get_generic_inst:
2808 *
2809 * Given a list of types, return a MonoGenericInst that represents that list.
2810 * The returned MonoGenericInst has its own copy of the list of types. The list
2811 * passed in the argument can be freed, modified or disposed of.
2812 *
2813 */
2814 MonoGenericInst *
2815 mono_metadata_get_generic_inst (int type_argc, MonoType **type_argv)
2816 {
2817 MonoGenericInst *ginst;
2818 gboolean is_open;
2819 int i;
2820 int size = MONO_SIZEOF_GENERIC_INST + type_argc * sizeof (MonoType *);
2821 CollectData data;
2822 MonoImageSet *set;
2823
2824 for (i = 0; i < type_argc; ++i)
2825 if (mono_class_is_open_constructed_type (type_argv [i]))
2826 break;
2827 is_open = (i < type_argc);
2828
2829 ginst = g_alloca (size);
2830 memset (ginst, 0, sizeof (MonoGenericInst));
2831 ginst->is_open = is_open;
2832 ginst->type_argc = type_argc;
2833 memcpy (ginst->type_argv, type_argv, type_argc * sizeof (MonoType *));
2834
2835 collect_data_init (&data);
2836
2837 collect_ginst_images (ginst, &data);
2838
2839 set = get_image_set (data.images, data.nimages);
2840
2841 collect_data_free (&data);
2842
2843 mono_image_set_lock (set);
2844
2845 ginst = g_hash_table_lookup (set->ginst_cache, ginst);
2846 if (!ginst) {
2847 ginst = mono_image_set_alloc0 (set, size);
2848 #ifndef MONO_SMALL_CONFIG
2849 ginst->id = ++next_generic_inst_id;
2850 #endif
2851 ginst->is_open = is_open;
2852 ginst->type_argc = type_argc;
2853
2854 for (i = 0; i < type_argc; ++i)
2855 ginst->type_argv [i] = mono_metadata_type_dup (NULL, type_argv [i]);
2856
2857 g_hash_table_insert (set->ginst_cache, ginst, ginst);
2858 }
2859
2860 mono_image_set_unlock (set);
2861 return ginst;
2862 }
2863
2864 static gboolean
2865 mono_metadata_is_type_builder_generic_type_definition (MonoClass *container_class, MonoGenericInst *inst, gboolean is_dynamic)
2866 {
2867 MonoGenericContainer *container = container_class->generic_container;
2868
2869 if (!is_dynamic || container_class->wastypebuilder || container->type_argc != inst->type_argc)
2870 return FALSE;
2871 return inst == container->context.class_inst;
2872 }
2873
2874 /*
2875 * mono_metadata_lookup_generic_class:
2876 *
2877 * Returns a MonoGenericClass with the given properties.
2878 *
2879 */
2880 MonoGenericClass *
2881 mono_metadata_lookup_generic_class (MonoClass *container_class, MonoGenericInst *inst, gboolean is_dynamic)
2882 {
2883 MonoGenericClass *gclass;
2884 MonoGenericClass helper;
2885 gboolean is_tb_open = mono_metadata_is_type_builder_generic_type_definition (container_class, inst, is_dynamic);
2886 MonoImageSet *set;
2887 CollectData data;
2888
2889 helper.container_class = container_class;
2890 helper.context.class_inst = inst;
2891 helper.context.method_inst = NULL;
2892 helper.is_dynamic = is_dynamic; /* We use this in a hash lookup, which does not attempt to downcast the pointer */
2893 helper.is_tb_open = is_tb_open;
2894 helper.cached_class = NULL;
2895
2896 collect_data_init (&data);
2897
2898 collect_gclass_images (&helper, &data);
2899
2900 set = get_image_set (data.images, data.nimages);
2901
2902 collect_data_free (&data);
2903
2904 mono_image_set_lock (set);
2905
2906 gclass = g_hash_table_lookup (set->gclass_cache, &helper);
2907
2908 /* A tripwire just to keep us honest */
2909 g_assert (!helper.cached_class);
2910
2911 if (gclass) {
2912 mono_image_set_unlock (set);
2913 return gclass;
2914 }
2915
2916 if (is_dynamic) {
2917 MonoDynamicGenericClass *dgclass = mono_image_set_new0 (set, MonoDynamicGenericClass, 1);
2918 gclass = &dgclass->generic_class;
2919 gclass->is_dynamic = 1;
2920 } else {
2921 gclass = mono_image_set_new0 (set, MonoGenericClass, 1);
2922 }
2923
2924 gclass->is_tb_open = is_tb_open;
2925 gclass->container_class = container_class;
2926 gclass->context.class_inst = inst;
2927 gclass->context.method_inst = NULL;
2928 gclass->owner = set;
2929 if (inst == container_class->generic_container->context.class_inst && !is_tb_open)
2930 gclass->cached_class = container_class;
2931
2932 g_hash_table_insert (set->gclass_cache, gclass, gclass);
2933
2934 mono_image_set_unlock (set);
2935
2936 return gclass;
2937 }
2938
2939 /*
2940 * mono_metadata_inflate_generic_inst:
2941 *
2942 * Instantiate the generic instance @ginst with the context @context.
2943 * Check @error for success.
2944 *
2945 */
2946 MonoGenericInst *
2947 mono_metadata_inflate_generic_inst (MonoGenericInst *ginst, MonoGenericContext *context, MonoError *error)
2948 {
2949 MonoType **type_argv;
2950 MonoGenericInst *nginst = NULL;
2951 int i, count = 0;
2952
2953 mono_error_init (error);
2954
2955 if (!ginst->is_open)
2956 return ginst;
2957
2958 type_argv = g_new0 (MonoType*, ginst->type_argc);
2959
2960 for (i = 0; i < ginst->type_argc; i++) {
2961 type_argv [i] = mono_class_inflate_generic_type_checked (ginst->type_argv [i], context, error);
2962 if (!mono_error_ok (error))
2963 goto cleanup;
2964 ++count;
2965 }
2966
2967 nginst = mono_metadata_get_generic_inst (ginst->type_argc, type_argv);
2968
2969 cleanup:
2970 for (i = 0; i < count; i++)
2971 mono_metadata_free_type (type_argv [i]);
2972 g_free (type_argv);
2973
2974 return nginst;
2975 }
2976
2977 MonoGenericInst *
2978 mono_metadata_parse_generic_inst (MonoImage *m, MonoGenericContainer *container,
2979 int count, const char *ptr, const char **rptr)
2980 {
2981 MonoType **type_argv;
2982 MonoGenericInst *ginst;
2983 int i;
2984
2985 type_argv = g_new0 (MonoType*, count);
2986
2987 for (i = 0; i < count; i++) {
2988 MonoType *t = mono_metadata_parse_type_full (m, container, MONO_PARSE_TYPE, 0, ptr, &ptr);
2989 if (!t) {
2990 g_free (type_argv);
2991 return NULL;
2992 }
2993 type_argv [i] = t;
2994 }
2995
2996 if (rptr)
2997 *rptr = ptr;
2998
2999 ginst = mono_metadata_get_generic_inst (count, type_argv);
3000
3001 g_free (type_argv);
3002
3003 return ginst;
3004 }
3005
3006 static gboolean
3007 do_mono_metadata_parse_generic_class (MonoType *type, MonoImage *m, MonoGenericContainer *container,
3008 const char *ptr, const char **rptr)
3009 {
3010 MonoGenericInst *inst;
3011 MonoClass *gklass;
3012 MonoType *gtype;
3013 int count;
3014
3015 gtype = mono_metadata_parse_type (m, MONO_PARSE_TYPE, 0, ptr, &ptr);
3016 if (gtype == NULL)
3017 return FALSE;
3018
3019 gklass = mono_class_from_mono_type (gtype);
3020 if (!gklass->generic_container)
3021 return FALSE;
3022
3023 count = mono_metadata_decode_value (ptr, &ptr);
3024 inst = mono_metadata_parse_generic_inst (m, container, count, ptr, &ptr);
3025 if (inst == NULL)
3026 return FALSE;
3027
3028 if (rptr)
3029 *rptr = ptr;
3030
3031 type->data.generic_class = mono_metadata_lookup_generic_class (gklass, inst, FALSE);
3032 return TRUE;
3033 }
3034
3035 /*
3036 * select_container:
3037 * @gc: The generic container to normalize
3038 * @type: The kind of generic parameters the resulting generic-container should contain
3039 */
3040
3041 static MonoGenericContainer *
3042 select_container (MonoGenericContainer *gc, MonoTypeEnum type)
3043 {
3044 gboolean is_var = (type == MONO_TYPE_VAR);
3045 if (!gc)
3046 return NULL;
3047
3048 g_assert (is_var || type == MONO_TYPE_MVAR);
3049
3050 if (is_var) {
3051 if (gc->is_method || gc->parent)
3052 /*
3053 * The current MonoGenericContainer is a generic method -> its `parent'
3054 * points to the containing class'es container.
3055 */
3056 return gc->parent;
3057 }
3058
3059 return gc;
3060 }
3061
3062 /*
3063 * mono_metadata_parse_generic_param:
3064 * @generic_container: Our MonoClass's or MonoMethod's MonoGenericContainer;
3065 * see mono_metadata_parse_type_full() for details.
3066 * Internal routine to parse a generic type parameter.
3067 * LOCKING: Acquires the loader lock
3068 */
3069 static MonoGenericParam *
3070 mono_metadata_parse_generic_param (MonoImage *m, MonoGenericContainer *generic_container,
3071 MonoTypeEnum type, const char *ptr, const char **rptr)
3072 {
3073 int index = mono_metadata_decode_value (ptr, &ptr);
3074 if (rptr)
3075 *rptr = ptr;
3076
3077 generic_container = select_container (generic_container, type);
3078 if (!generic_container) {
3079 /* Create dummy MonoGenericParam */
3080 MonoGenericParam *param;
3081
3082 param = mono_image_alloc0 (m, sizeof (MonoGenericParam));
3083 param->num = index;
3084 param->image = m;
3085
3086 return param;
3087 }
3088
3089 if (index >= generic_container->type_argc)
3090 return NULL;
3091
3092 return mono_generic_container_get_param (generic_container, index);
3093 }
3094
3095 /*
3096 * mono_metadata_get_shared_type:
3097 *
3098 * Return a shared instance of TYPE, if available, NULL otherwise.
3099 * Shared MonoType instances help save memory. Their contents should not be modified
3100 * by the caller. They do not need to be freed as their lifetime is bound by either
3101 * the lifetime of the runtime (builtin types), or the lifetime of the MonoClass
3102 * instance they are embedded in. If they are freed, they should be freed using
3103 * mono_metadata_free_type () instead of g_free ().
3104 */
3105 MonoType*
3106 mono_metadata_get_shared_type (MonoType *type)
3107 {
3108 MonoType *cached;
3109
3110 /* No need to use locking since nobody is modifying the hash table */
3111 if ((cached = g_hash_table_lookup (type_cache, type)))
3112 return cached;
3113
3114 switch (type->type){
3115 case MONO_TYPE_CLASS:
3116 case MONO_TYPE_VALUETYPE:
3117 if (type == &type->data.klass->byval_arg)
3118 return type;
3119 if (type == &type->data.klass->this_arg)
3120 return type;
3121 break;
3122 }
3123
3124 return NULL;
3125 }
3126
3127 static gboolean
3128 compare_type_literals (int class_type, int type_type)
3129 {
3130 /* byval_arg.type can be zero if we're decoding a type that references a class been loading.
3131 * See mcs/test/gtest-440. and #650936.
3132 * FIXME This better be moved to the metadata verifier as it can catch more cases.
3133 */
3134 if (!class_type)
3135 return TRUE;
3136 /* NET 1.1 assemblies might encode string and object in a denormalized way.
3137 * See #675464.
3138 */
3139 if (type_type == MONO_TYPE_CLASS && (class_type == MONO_TYPE_STRING || class_type == MONO_TYPE_OBJECT))
3140 return TRUE;
3141 return class_type == type_type;
3142 }
3143
3144 /*
3145 * do_mono_metadata_parse_type:
3146 * @type: MonoType to be filled in with the return value
3147 * @m: image context
3148 * @generic_context: generics_context
3149 * @transient: whenever to allocate data from the heap
3150 * @ptr: pointer to the encoded type
3151 * @rptr: pointer where the end of the encoded type is saved
3152 *
3153 * Internal routine used to "fill" the contents of @type from an
3154 * allocated pointer. This is done this way to avoid doing too
3155 * many mini-allocations (particularly for the MonoFieldType which
3156 * most of the time is just a MonoType, but sometimes might be augmented).
3157 *
3158 * This routine is used by mono_metadata_parse_type and
3159 * mono_metadata_parse_field_type
3160 *
3161 * This extracts a Type as specified in Partition II (22.2.12)
3162 *
3163 * Returns: FALSE if the type could not be loaded
3164 */
3165 static gboolean
3166 do_mono_metadata_parse_type (MonoType *type, MonoImage *m, MonoGenericContainer *container,
3167 gboolean transient, const char *ptr, const char **rptr)
3168 {
3169 gboolean ok = TRUE;
3170 type->type = mono_metadata_decode_value (ptr, &ptr);
3171
3172 switch (type->type){
3173 case MONO_TYPE_VOID:
3174 case MONO_TYPE_BOOLEAN:
3175 case MONO_TYPE_CHAR:
3176 case MONO_TYPE_I1:
3177 case MONO_TYPE_U1:
3178 case MONO_TYPE_I2:
3179 case MONO_TYPE_U2:
3180 case MONO_TYPE_I4:
3181 case MONO_TYPE_U4:
3182 case MONO_TYPE_I8:
3183 case MONO_TYPE_U8:
3184 case MONO_TYPE_R4:
3185 case MONO_TYPE_R8:
3186 case MONO_TYPE_I:
3187 case MONO_TYPE_U:
3188 case MONO_TYPE_STRING:
3189 case MONO_TYPE_OBJECT:
3190 case MONO_TYPE_TYPEDBYREF:
3191 break;
3192 case MONO_TYPE_VALUETYPE:
3193 case MONO_TYPE_CLASS: {
3194 guint32 token;
3195 MonoClass *class;
3196 MonoError error;
3197 token = mono_metadata_parse_typedef_or_ref (m, ptr, &ptr);
3198 class = mono_class_get_checked (m, token, &error);
3199 type->data.klass = class;
3200 if (!class) {
3201 mono_loader_set_error_from_mono_error (&error);
3202 mono_error_cleanup (&error); /*FIXME don't swallow the error message*/
3203 return FALSE;
3204 }
3205 if (!compare_type_literals (class->byval_arg.type, type->type))
3206 return FALSE;
3207 break;
3208 }
3209 case MONO_TYPE_SZARRAY: {
3210 MonoType *etype = mono_metadata_parse_type_full (m, container, MONO_PARSE_MOD_TYPE, 0, ptr, &ptr);
3211 if (!etype)
3212 return FALSE;
3213 type->data.klass = mono_class_from_mono_type (etype);
3214 if (!type->data.klass)
3215 return FALSE;
3216 break;
3217 }
3218 case MONO_TYPE_PTR:
3219 type->data.type = mono_metadata_parse_type_internal (m, container, MONO_PARSE_MOD_TYPE, 0, transient, ptr, &ptr);
3220 if (!type->data.type)
3221 return FALSE;
3222 break;
3223 case MONO_TYPE_FNPTR:
3224 type->data.method = mono_metadata_parse_method_signature_full (m, container, 0, ptr, &ptr);
3225 if (!type->data.method)
3226 return FALSE;
3227 break;
3228 case MONO_TYPE_ARRAY:
3229 type->data.array = mono_metadata_parse_array_internal (m, container, transient, ptr, &ptr);
3230 if (!type->data.array)
3231 return FALSE;
3232 break;
3233 case MONO_TYPE_MVAR:
3234 if (container && !container->is_method)
3235 return FALSE;
3236 case MONO_TYPE_VAR:
3237 type->data.generic_param = mono_metadata_parse_generic_param (m, container, type->type, ptr, &ptr);
3238 if (!type->data.generic_param)
3239 return FALSE;
3240 break;
3241 case MONO_TYPE_GENERICINST:
3242 ok = do_mono_metadata_parse_generic_class (type, m, container, ptr, &ptr);
3243 break;
3244 default:
3245 g_warning ("type 0x%02x not handled in do_mono_metadata_parse_type on image %s", type->type, m->name);
3246 return FALSE;
3247 }
3248
3249 if (rptr)
3250 *rptr = ptr;
3251 return ok;
3252 }
3253
3254 /*
3255 * mono_metadata_free_type:
3256 * @type: type to free
3257 *
3258 * Free the memory allocated for type @type which is allocated on the heap.
3259 */
3260 void
3261 mono_metadata_free_type (MonoType *type)
3262 {
3263 if (type >= builtin_types && type < builtin_types + NBUILTIN_TYPES ())
3264 return;
3265
3266 switch (type->type){
3267 case MONO_TYPE_OBJECT:
3268 case MONO_TYPE_STRING:
3269 if (!type->data.klass)
3270 break;
3271 /* fall through */
3272 case MONO_TYPE_CLASS:
3273 case MONO_TYPE_VALUETYPE:
3274 if (type == &type->data.klass->byval_arg || type == &type->data.klass->this_arg)
3275 return;
3276 break;
3277 case MONO_TYPE_PTR:
3278 mono_metadata_free_type (type->data.type);
3279 break;
3280 case MONO_TYPE_FNPTR:
3281 mono_metadata_free_method_signature (type->data.method);
3282 break;
3283 case MONO_TYPE_ARRAY:
3284 mono_metadata_free_array (type->data.array);
3285 break;
3286 }
3287
3288 g_free (type);
3289 }
3290
3291 #if 0
3292 static void
3293 hex_dump (const char *buffer, int base, int count)
3294 {
3295 int show_header = 1;
3296 int i;
3297
3298 if (count < 0){
3299 count = -count;
3300 show_header = 0;
3301 }
3302
3303 for (i = 0; i < count; i++){
3304 if (show_header)
3305 if ((i % 16) == 0)
3306 printf ("\n0x%08x: ", (unsigned char) base + i);
3307
3308 printf ("%02x ", (unsigned char) (buffer [i]));
3309 }
3310 fflush (stdout);
3311 }
3312 #endif
3313
3314 /**
3315 * @ptr: Points to the beginning of the Section Data (25.3)
3316 */
3317 static MonoExceptionClause*
3318 parse_section_data (MonoImage *m, int *num_clauses, const unsigned char *ptr)
3319 {
3320 unsigned char sect_data_flags;
3321 const unsigned char *sptr;
3322 int is_fat;
3323 guint32 sect_data_len;
3324 MonoExceptionClause* clauses = NULL;
3325
3326 while (1) {
3327 /* align on 32-bit boundary */
3328 sptr = ptr = dword_align (ptr);
3329 sect_data_flags = *ptr;
3330 ptr++;
3331
3332 is_fat = sect_data_flags & METHOD_HEADER_SECTION_FAT_FORMAT;
3333 if (is_fat) {
3334 sect_data_len = (ptr [2] << 16) | (ptr [1] << 8) | ptr [0];
3335 ptr += 3;
3336 } else {
3337 sect_data_len = ptr [0];
3338 ++ptr;
3339 }
3340 /*
3341 g_print ("flags: %02x, len: %d\n", sect_data_flags, sect_data_len);
3342 hex_dump (sptr, 0, sect_data_len+8);
3343 g_print ("\nheader: ");
3344 hex_dump (sptr-4, 0, 4);
3345 g_print ("\n");
3346 */
3347
3348 if (sect_data_flags & METHOD_HEADER_SECTION_EHTABLE) {
3349 const unsigned char *p = dword_align (ptr);
3350 int i;
3351 *num_clauses = is_fat ? sect_data_len / 24: sect_data_len / 12;
3352 /* we could just store a pointer if we don't need to byteswap */
3353 clauses = g_malloc0 (sizeof (MonoExceptionClause) * (*num_clauses));
3354 for (i = 0; i < *num_clauses; ++i) {
3355 MonoExceptionClause *ec = &clauses [i];
3356 guint32 tof_value;
3357 if (is_fat) {
3358 ec->flags = read32 (p);
3359 ec->try_offset = read32 (p + 4);
3360 ec->try_len = read32 (p + 8);
3361 ec->handler_offset = read32 (p + 12);
3362 ec->handler_len = read32 (p + 16);
3363 tof_value = read32 (p + 20);
3364 p += 24;
3365 } else {
3366 ec->flags = read16 (p);
3367 ec->try_offset = read16 (p + 2);
3368 ec->try_len = *(p + 4);
3369 ec->handler_offset = read16 (p + 5);
3370 ec->handler_len = *(p + 7);
3371 tof_value = read32 (p + 8);
3372 p += 12;
3373 }
3374 if (ec->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
3375 ec->data.filter_offset = tof_value;
3376 } else if (ec->flags == MONO_EXCEPTION_CLAUSE_NONE) {
3377 ec->data.catch_class = NULL;
3378 if (tof_value) {
3379 MonoError error;
3380 ec->data.catch_class = mono_class_get_checked (m, tof_value, &error);
3381 if (!mono_error_ok (&error)) {
3382 mono_error_cleanup (&error); /* FIXME don't swallow the error */
3383 g_free (clauses);
3384 return NULL;
3385 }
3386 }
3387 } else {
3388 ec->data.catch_class = NULL;
3389 }
3390 /* g_print ("try %d: %x %04x-%04x %04x\n", i, ec->flags, ec->try_offset, ec->try_offset+ec->try_len, ec->try_len); */
3391 }
3392
3393 }
3394 if (sect_data_flags & METHOD_HEADER_SECTION_MORE_SECTS)
3395 ptr += sect_data_len - 4; /* LAMESPEC: it seems the size includes the header */
3396 else
3397 return clauses;
3398 }
3399 }
3400
3401 /*
3402 * mono_method_get_header_summary:
3403 * @method: The method to get the header.
3404 * @summary: Where to store the header
3405 *
3406 *
3407 * Returns: true if the header was properly decoded.
3408 */
3409 gboolean
3410 mono_method_get_header_summary (MonoMethod *method, MonoMethodHeaderSummary *summary)
3411 {
3412 int idx;
3413 guint32 rva;
3414 MonoImage* img;
3415 const char *ptr;
3416 unsigned char flags, format;
3417 guint16 fat_flags;
3418
3419 /*Only the GMD has a pointer to the metadata.*/
3420 while (method->is_inflated)
3421 method = ((MonoMethodInflated*)method)->declaring;
3422
3423 summary->code_size = 0;
3424 summary->has_clauses = FALSE;
3425
3426 /*FIXME extract this into a MACRO and share it with mono_method_get_header*/
3427 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))
3428 return FALSE;
3429
3430 if (method->wrapper_type != MONO_WRAPPER_NONE || method->sre_method) {
3431 MonoMethodHeader *header = ((MonoMethodWrapper *)method)->header;
3432 if (!header)
3433 return FALSE;
3434 summary->code_size = header->code_size;
3435 summary->has_clauses = header->num_clauses > 0;
3436 return TRUE;
3437 }
3438
3439
3440 idx = mono_metadata_token_index (method->token);
3441 img = method->klass->image;
3442 rva = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_RVA);
3443
3444 /*We must run the verifier since we'll be decoding it.*/
3445 if (!mono_verifier_verify_method_header (img, rva, NULL))
3446 return FALSE;
3447
3448 ptr = mono_image_rva_map (img, rva);
3449 g_assert (ptr);
3450
3451 flags = *(const unsigned char *)ptr;
3452 format = flags & METHOD_HEADER_FORMAT_MASK;
3453
3454 switch (format) {
3455 case METHOD_HEADER_TINY_FORMAT:
3456 ptr++;
3457 summary->code_size = flags >> 2;
3458 break;
3459 case METHOD_HEADER_FAT_FORMAT:
3460 fat_flags = read16 (ptr);
3461 ptr += 4;
3462 summary->code_size = read32 (ptr);
3463 if (fat_flags & METHOD_HEADER_MORE_SECTS)
3464 summary->has_clauses = TRUE;
3465 break;
3466 default:
3467 return FALSE;
3468 }
3469 return TRUE;
3470 }
3471
3472 /*
3473 * mono_metadata_parse_mh_full:
3474 * @m: metadata context
3475 * @generic_context: generics context
3476 * @ptr: pointer to the method header.
3477 *
3478 * Decode the method header at @ptr, including pointer to the IL code,
3479 * info about local variables and optional exception tables.
3480 * This is a Mono runtime internal function.
3481 *
3482 * LOCKING: Acquires the loader lock.
3483 *
3484 * Returns: a transient MonoMethodHeader allocated from the heap.
3485 */
3486 MonoMethodHeader *
3487 mono_metadata_parse_mh_full (MonoImage *m, MonoGenericContainer *container, const char *ptr)
3488 {
3489 MonoMethodHeader *mh = NULL;
3490 unsigned char flags = *(const unsigned char *) ptr;
3491 unsigned char format = flags & METHOD_HEADER_FORMAT_MASK;
3492 guint16 fat_flags;
3493 guint32 local_var_sig_tok, max_stack, code_size, init_locals;
3494 const unsigned char *code;
3495 MonoExceptionClause* clauses = NULL;
3496 int hsize, num_clauses = 0;
3497 MonoTableInfo *t = &m->tables [MONO_TABLE_STANDALONESIG];
3498 guint32 cols [MONO_STAND_ALONE_SIGNATURE_SIZE];
3499
3500 g_return_val_if_fail (ptr != NULL, NULL);
3501
3502 switch (format) {
3503 case METHOD_HEADER_TINY_FORMAT:
3504 mh = g_malloc0 (MONO_SIZEOF_METHOD_HEADER);
3505 ptr++;
3506 mh->max_stack = 8;
3507 mh->is_transient = TRUE;
3508 local_var_sig_tok = 0;
3509 mh->code_size = flags >> 2;
3510 mh->code = (unsigned char*)ptr;
3511 return mh;
3512 case METHOD_HEADER_FAT_FORMAT:
3513 fat_flags = read16 (ptr);
3514 ptr += 2;
3515 hsize = (fat_flags >> 12) & 0xf;
3516 max_stack = read16 (ptr);
3517 ptr += 2;
3518 code_size = read32 (ptr);
3519 ptr += 4;
3520 local_var_sig_tok = read32 (ptr);
3521 ptr += 4;
3522
3523 if (fat_flags & METHOD_HEADER_INIT_LOCALS)
3524 init_locals = 1;
3525 else
3526 init_locals = 0;
3527
3528 code = (unsigned char*)ptr;
3529
3530 if (!(fat_flags & METHOD_HEADER_MORE_SECTS))
3531 break;
3532
3533 /*
3534 * There are more sections
3535 */
3536 ptr = (char*)code + code_size;
3537 break;
3538 default:
3539 return NULL;
3540 }
3541
3542 if (local_var_sig_tok) {
3543 int idx = (local_var_sig_tok & 0xffffff)-1;
3544 if (idx >= t->rows || idx < 0)
3545 goto fail;
3546 mono_metadata_decode_row (t, idx, cols, 1);
3547
3548 if (!mono_verifier_verify_standalone_signature (m, cols [MONO_STAND_ALONE_SIGNATURE], NULL))
3549 goto fail;
3550 }
3551 if (fat_flags & METHOD_HEADER_MORE_SECTS)
3552 clauses = parse_section_data (m, &num_clauses, (const unsigned char*)ptr);
3553 if (local_var_sig_tok) {
3554 const char *locals_ptr;
3555 int len=0, i, bsize;
3556
3557 locals_ptr = mono_metadata_blob_heap (m, cols [MONO_STAND_ALONE_SIGNATURE]);
3558 bsize = mono_metadata_decode_blob_size (locals_ptr, &locals_ptr);
3559 if (*locals_ptr != 0x07)
3560 g_warning ("wrong signature for locals blob");
3561 locals_ptr++;
3562 len = mono_metadata_decode_value (locals_ptr, &locals_ptr);
3563 mh = g_malloc0 (MONO_SIZEOF_METHOD_HEADER + len * sizeof (MonoType*) + num_clauses * sizeof (MonoExceptionClause));
3564 mh->num_locals = len;
3565 for (i = 0; i < len; ++i) {
3566 mh->locals [i] = mono_metadata_parse_type_internal (m, container,
3567 MONO_PARSE_LOCAL, 0, TRUE, locals_ptr, &locals_ptr);
3568 if (!mh->locals [i])
3569 goto fail;
3570 }
3571 } else {
3572 mh = g_malloc0 (MONO_SIZEOF_METHOD_HEADER + num_clauses * sizeof (MonoExceptionClause));
3573 }
3574 mh->code = code;
3575 mh->code_size = code_size;
3576 mh->max_stack = max_stack;
3577 mh->is_transient = TRUE;
3578 mh->init_locals = init_locals;
3579 if (clauses) {
3580 MonoExceptionClause* clausesp = (MonoExceptionClause*)&mh->locals [mh->num_locals];
3581 memcpy (clausesp, clauses, num_clauses * sizeof (MonoExceptionClause));
3582 g_free (clauses);
3583 mh->clauses = clausesp;
3584 mh->num_clauses = num_clauses;
3585 }
3586 return mh;
3587 fail:
3588 g_free (clauses);
3589 g_free (mh);
3590 return NULL;
3591
3592 }
3593
3594 /*
3595 * mono_metadata_parse_mh:
3596 * @generic_context: generics context
3597 * @ptr: pointer to the method header.
3598 *
3599 * Decode the method header at @ptr, including pointer to the IL code,
3600 * info about local variables and optional exception tables.
3601 *
3602 * Returns: a transient MonoMethodHeader allocated from the heap.
3603 */
3604 MonoMethodHeader *
3605 mono_metadata_parse_mh (MonoImage *m, const char *ptr)
3606 {
3607 return mono_metadata_parse_mh_full (m, NULL, ptr);
3608 }
3609
3610 /*
3611 * mono_metadata_free_mh:
3612 * @mh: a method header
3613 *
3614 * Free the memory allocated for the method header.
3615 */
3616 void
3617 mono_metadata_free_mh (MonoMethodHeader *mh)
3618 {
3619 int i;
3620
3621 /* If it is not transient it means it's part of a wrapper method,
3622 * or a SRE-generated method, so the lifetime in that case is
3623 * dictated by the method's own lifetime
3624 */
3625 if (mh->is_transient) {
3626 for (i = 0; i < mh->num_locals; ++i)
3627 mono_metadata_free_type (mh->locals [i]);
3628 g_free (mh);
3629 }
3630 }
3631
3632 /*
3633 * mono_method_header_get_code:
3634 * @header: a MonoMethodHeader pointer
3635 * @code_size: memory location for returning the code size
3636 * @max_stack: memory location for returning the max stack
3637 *
3638 * Method header accessor to retreive info about the IL code properties:
3639 * a pointer to the IL code itself, the size of the code and the max number
3640 * of stack slots used by the code.
3641 *
3642 * Returns: pointer to the IL code represented by the method header.
3643 */
3644 const unsigned char*
3645 mono_method_header_get_code (MonoMethodHeader *header, guint32* code_size, guint32* max_stack)
3646 {
3647 if (code_size)
3648 *code_size = header->code_size;
3649 if (max_stack)
3650 *max_stack = header->max_stack;
3651 return header->code;
3652 }
3653
3654 /*
3655 * mono_method_header_get_locals:
3656 * @header: a MonoMethodHeader pointer
3657 * @num_locals: memory location for returning the number of local variables
3658 * @init_locals: memory location for returning the init_locals flag
3659 *
3660 * Method header accessor to retreive info about the local variables:
3661 * an array of local types, the number of locals and whether the locals
3662 * are supposed to be initialized to 0 on method entry
3663 *
3664 * Returns: pointer to an array of types of the local variables
3665 */
3666 MonoType**
3667 mono_method_header_get_locals (MonoMethodHeader *header, guint32* num_locals, gboolean *init_locals)
3668 {
3669 if (num_locals)
3670 *num_locals = header->num_locals;
3671 if (init_locals)
3672 *init_locals = header->init_locals;
3673 return header->locals;
3674 }
3675
3676 /*
3677 * mono_method_header_get_num_clauses:
3678 * @header: a MonoMethodHeader pointer
3679 *
3680 * Method header accessor to retreive the number of exception clauses.
3681 *
3682 * Returns: the number of exception clauses present
3683 */
3684 int
3685 mono_method_header_get_num_clauses (MonoMethodHeader *header)
3686 {
3687 return header->num_clauses;
3688 }
3689
3690 /*
3691 * mono_method_header_get_clauses:
3692 * @header: a MonoMethodHeader pointer
3693 * @method: MonoMethod the header belongs to
3694 * @iter: pointer to a iterator
3695 * @clause: pointer to a MonoExceptionClause structure which will be filled with the info
3696 *
3697 * Get the info about the exception clauses in the method. Set *iter to NULL to
3698 * initiate the iteration, then call the method repeatedly until it returns FALSE.
3699 * At each iteration, the structure pointed to by clause if filled with the
3700 * exception clause information.
3701 *
3702 * Returns: TRUE if clause was filled with info, FALSE if there are no more exception
3703 * clauses.
3704 */
3705 int
3706 mono_method_header_get_clauses (MonoMethodHeader *header, MonoMethod *method, gpointer *iter, MonoExceptionClause *clause)
3707 {
3708 MonoExceptionClause *sc;
3709 /* later we'll be able to use this interface to parse the clause info on demand,
3710 * without allocating anything.
3711 */
3712 if (!iter || !header->num_clauses)
3713 return FALSE;
3714 if (!*iter) {
3715 *iter = sc = header->clauses;
3716 *clause = *sc;
3717 return TRUE;
3718 }
3719 sc = *iter;
3720 sc++;
3721 if (sc < header->clauses + header->num_clauses) {
3722 *iter = sc;
3723 *clause = *sc;
3724 return TRUE;
3725 }
3726 return FALSE;
3727 }
3728
3729 /**
3730 * mono_metadata_parse_field_type:
3731 * @m: metadata context to extract information from
3732 * @ptr: pointer to the field signature
3733 * @rptr: pointer updated to match the end of the decoded stream
3734 *
3735 * Parses the field signature, and returns the type information for it.
3736 *
3737 * Returns: The MonoType that was extracted from @ptr.
3738 */
3739 MonoType *
3740 mono_metadata_parse_field_type (MonoImage *m, short field_flags, const char *ptr, const char **rptr)
3741 {
3742 return mono_metadata_parse_type (m, MONO_PARSE_FIELD, field_flags, ptr, rptr);
3743 }
3744
3745 /**
3746 * mono_metadata_parse_param:
3747 * @m: metadata context to extract information from
3748 * @ptr: pointer to the param signature
3749 * @rptr: pointer updated to match the end of the decoded stream
3750 *
3751 * Parses the param signature, and returns the type information for it.
3752 *
3753 * Returns: The MonoType that was extracted from @ptr.
3754 */
3755 MonoType *
3756 mono_metadata_parse_param (MonoImage *m, const char *ptr, const char **rptr)
3757 {
3758 return mono_metadata_parse_type (m, MONO_PARSE_PARAM, 0, ptr, rptr);
3759 }
3760
3761 /*
3762 * mono_metadata_token_from_dor:
3763 * @dor_token: A TypeDefOrRef coded index
3764 *
3765 * dor_token is a TypeDefOrRef coded index: it contains either
3766 * a TypeDef, TypeRef or TypeSpec in the lower bits, and the upper
3767 * bits contain an index into the table.
3768 *
3769 * Returns: an expanded token
3770 */
3771 guint32
3772 mono_metadata_token_from_dor (guint32 dor_index)
3773 {
3774 guint32 table, idx;
3775
3776 table = dor_index & 0x03;
3777 idx = dor_index >> 2;
3778
3779 switch (table){
3780 case 0: /* TypeDef */
3781 return MONO_TOKEN_TYPE_DEF | idx;
3782 case 1: /* TypeRef */
3783 return MONO_TOKEN_TYPE_REF | idx;
3784 case 2: /* TypeSpec */
3785 return MONO_TOKEN_TYPE_SPEC | idx;
3786 default:
3787 g_assert_not_reached ();
3788 }
3789
3790 return 0;
3791 }
3792
3793 /*
3794 * We use this to pass context information to the row locator
3795 */
3796 typedef struct {
3797 int idx; /* The index that we are trying to locate */
3798 int col_idx; /* The index in the row where idx may be stored */
3799 MonoTableInfo *t; /* pointer to the table */
3800 guint32 result;
3801 } locator_t;
3802
3803 /*
3804 * How the row locator works.
3805 *
3806 * Table A
3807 * ___|___
3808 * ___|___ Table B
3809 * ___|___------> _______
3810 * ___|___ _______
3811 *
3812 * A column in the rows of table A references an index in table B.
3813 * For example A may be the TYPEDEF table and B the METHODDEF table.
3814 *
3815 * Given an index in table B we want to get the row in table A
3816 * where the column n references our index in B.
3817 *
3818 * In the locator_t structure:
3819 * t is table A
3820 * col_idx is the column number
3821 * index is the index in table B
3822 * result will be the index in table A
3823 *
3824 * Examples:
3825 * Table A Table B column (in table A)
3826 * TYPEDEF METHODDEF MONO_TYPEDEF_METHOD_LIST
3827 * TYPEDEF FIELD MONO_TYPEDEF_FIELD_LIST
3828 * PROPERTYMAP PROPERTY MONO_PROPERTY_MAP_PROPERTY_LIST
3829 * INTERFIMPL TYPEDEF MONO_INTERFACEIMPL_CLASS
3830 * METHODSEM PROPERTY ASSOCIATION (encoded index)
3831 *
3832 * Note that we still don't support encoded indexes.
3833 *
3834 */
3835 static int
3836 typedef_locator (const void *a, const void *b)
3837 {
3838 locator_t *loc = (locator_t *) a;
3839 const char *bb = (const char *) b;
3840 int typedef_index = (bb - loc->t->base) / loc->t->row_size;
3841 guint32 col, col_next;
3842
3843 col = mono_metadata_decode_row_col (loc->t, typedef_index, loc->col_idx);
3844
3845 if (loc->idx < col)
3846 return -1;
3847
3848 /*
3849 * Need to check that the next row is valid.
3850 */
3851 if (typedef_index + 1 < loc->t->rows) {
3852 col_next = mono_metadata_decode_row_col (loc->t, typedef_index + 1, loc->col_idx);
3853 if (loc->idx >= col_next)
3854 return 1;
3855
3856 if (col == col_next)
3857 return 1;
3858 }
3859
3860 loc->result = typedef_index;
3861
3862 return 0;
3863 }
3864
3865 static int
3866 table_locator (const void *a, const void *b)
3867 {
3868 locator_t *loc = (locator_t *) a;
3869 const char *bb = (const char *) b;
3870 guint32 table_index = (bb - loc->t->base) / loc->t->row_size;
3871 guint32 col;
3872
3873 col = mono_metadata_decode_row_col (loc->t, table_index, loc->col_idx);
3874
3875 if (loc->idx == col) {
3876 loc->result = table_index;
3877 return 0;
3878 }
3879 if (loc->idx < col)
3880 return -1;
3881 else
3882 return 1;
3883 }
3884
3885 static int
3886 declsec_locator (const void *a, const void *b)
3887 {
3888 locator_t *loc = (locator_t *) a;
3889 const char *bb = (const char *) b;
3890 guint32 table_index = (bb - loc->t->base) / loc->t->row_size;
3891 guint32 col;
3892
3893 col = mono_metadata_decode_row_col (loc->t, table_index, loc->col_idx);
3894
3895 if (loc->idx == col) {
3896 loc->result = table_index;
3897 return 0;
3898 }
3899 if (loc->idx < col)
3900 return -1;
3901 else
3902 return 1;
3903 }
3904
3905 /**
3906 * search_ptr_table:
3907 *
3908 * Return the 1-based row index in TABLE, which must be one of the *Ptr tables,
3909 * which contains IDX.
3910 */
3911 static guint32
3912 search_ptr_table (MonoImage *image, int table, int idx)
3913 {
3914 MonoTableInfo *ptrdef = &image->tables [table];
3915 int i;
3916
3917 /* Use a linear search to find our index in the table */
3918 for (i = 0; i < ptrdef->rows; i ++)
3919 /* All the Ptr tables have the same structure */
3920 if (mono_metadata_decode_row_col (ptrdef, i, 0) == idx)
3921 break;
3922
3923 if (i < ptrdef->rows)
3924 return i + 1;
3925 else
3926 return idx;
3927 }
3928
3929 /**
3930 * mono_metadata_typedef_from_field:
3931 * @meta: metadata context
3932 * @index: FieldDef token
3933 *
3934 * Returns: the 1-based index into the TypeDef table of the type that
3935 * declared the field described by @index, or 0 if not found.
3936 */
3937 guint32
3938 mono_metadata_typedef_from_field (MonoImage *meta, guint32 index)
3939 {
3940 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_TYPEDEF];
3941 locator_t loc;
3942
3943 if (!tdef->base)
3944 return 0;
3945
3946 loc.idx = mono_metadata_token_index (index);
3947 loc.col_idx = MONO_TYPEDEF_FIELD_LIST;
3948 loc.t = tdef;
3949
3950 if (meta->uncompressed_metadata)
3951 loc.idx = search_ptr_table (meta, MONO_TABLE_FIELD_POINTER, loc.idx);
3952
3953 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, typedef_locator))
3954 return 0;
3955
3956 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
3957 return loc.result + 1;
3958 }
3959
3960 /*
3961 * mono_metadata_typedef_from_method:
3962 * @meta: metadata context
3963 * @index: MethodDef token
3964 *
3965 * Returns: the 1-based index into the TypeDef table of the type that
3966 * declared the method described by @index. 0 if not found.
3967 */
3968 guint32
3969 mono_metadata_typedef_from_method (MonoImage *meta, guint32 index)
3970 {
3971 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_TYPEDEF];
3972 locator_t loc;
3973
3974 if (!tdef->base)
3975 return 0;
3976
3977 loc.idx = mono_metadata_token_index (index);
3978 loc.col_idx = MONO_TYPEDEF_METHOD_LIST;
3979 loc.t = tdef;
3980
3981 if (meta->uncompressed_metadata)
3982 loc.idx = search_ptr_table (meta, MONO_TABLE_METHOD_POINTER, loc.idx);
3983
3984 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, typedef_locator))
3985 return 0;
3986
3987 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
3988 return loc.result + 1;
3989 }
3990
3991 /*
3992 * mono_metadata_interfaces_from_typedef_full:
3993 * @meta: metadata context
3994 * @index: typedef token
3995 * @interfaces: Out parameter used to store the interface array
3996 * @count: Out parameter used to store the number of interfaces
3997 * @heap_alloc_result: if TRUE the result array will be g_malloc'd
3998 * @context: The generic context
3999 *
4000 * The array of interfaces that the @index typedef token implements is returned in
4001 * @interfaces. The number of elements in the array is returned in @count.
4002 *
4003
4004 * Returns: TRUE on success, FALSE on failure.
4005 */
4006 gboolean
4007 mono_metadata_interfaces_from_typedef_full (MonoImage *meta, guint32 index, MonoClass ***interfaces, guint *count, gboolean heap_alloc_result, MonoGenericContext *context)
4008 {
4009 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_INTERFACEIMPL];
4010 locator_t loc;
4011 guint32 start, pos;
4012 guint32 cols [MONO_INTERFACEIMPL_SIZE];
4013 MonoClass **result;
4014
4015 *interfaces = NULL;
4016 *count = 0;
4017
4018 if (!tdef->base)
4019 return TRUE;
4020
4021 loc.idx = mono_metadata_token_index (index);
4022 loc.col_idx = MONO_INTERFACEIMPL_CLASS;
4023 loc.t = tdef;
4024
4025 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
4026 return TRUE;
4027
4028 start = loc.result;
4029 /*
4030 * We may end up in the middle of the rows...
4031 */
4032 while (start > 0) {
4033 if (loc.idx == mono_metadata_decode_row_col (tdef, start - 1, MONO_INTERFACEIMPL_CLASS))
4034 start--;
4035 else
4036 break;
4037 }
4038 pos = start;
4039 while (pos < tdef->rows) {
4040 mono_metadata_decode_row (tdef, pos, cols, MONO_INTERFACEIMPL_SIZE);
4041 if (cols [MONO_INTERFACEIMPL_CLASS] != loc.idx)
4042 break;
4043 ++pos;
4044 }
4045
4046 if (heap_alloc_result)
4047 result = g_new0 (MonoClass*, pos - start);
4048 else
4049 result = mono_image_alloc0 (meta, sizeof (MonoClass*) * (pos - start));
4050
4051 pos = start;
4052 while (pos < tdef->rows) {
4053 MonoError error;
4054 MonoClass *iface;
4055
4056 mono_metadata_decode_row (tdef, pos, cols, MONO_INTERFACEIMPL_SIZE);
4057 if (cols [MONO_INTERFACEIMPL_CLASS] != loc.idx)
4058 break;
4059 iface = mono_class_get_and_inflate_typespec_checked (
4060 meta, mono_metadata_token_from_dor (cols [MONO_INTERFACEIMPL_INTERFACE]), context, &error);
4061 if (iface == NULL) {
4062 mono_loader_set_error_from_mono_error (&error);
4063 mono_error_cleanup (&error); /* FIXME Don't swallow the error */
4064 return FALSE;
4065 }
4066 result [pos - start] = iface;
4067 ++pos;
4068 }
4069 *count = pos - start;
4070 *interfaces = result;
4071 return TRUE;
4072 }
4073
4074 /*
4075 * @meta: metadata context
4076 * @index: typedef token
4077 * @count: Out parameter used to store the number of interfaces
4078 *
4079 * The array of interfaces that the @index typedef token implements is returned in
4080 * @interfaces. The number of elements in the array is returned in @count. The returned
4081 * array is g_malloc'd and the caller must free it.
4082 *
4083 * LOCKING: Acquires the loader lock .
4084 *
4085 * Returns: the interface array on success, NULL on failure.
4086 */
4087
4088 MonoClass**
4089 mono_metadata_interfaces_from_typedef (MonoImage *meta, guint32 index, guint *count)
4090 {
4091 MonoClass **interfaces;
4092 gboolean rv;
4093
4094 rv = mono_metadata_interfaces_from_typedef_full (meta, index, &interfaces, count, TRUE, NULL);
4095 if (rv)
4096 return interfaces;
4097 else
4098 return NULL;
4099 }
4100
4101 /*
4102 * mono_metadata_nested_in_typedef:
4103 * @meta: metadata context
4104 * @index: typedef token
4105 *
4106 * Returns: the 1-based index into the TypeDef table of the type
4107 * where the type described by @index is nested.
4108 * Returns 0 if @index describes a non-nested type.
4109 */
4110 guint32
4111 mono_metadata_nested_in_typedef (MonoImage *meta, guint32 index)
4112 {
4113 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_NESTEDCLASS];
4114 locator_t loc;
4115
4116 if (!tdef->base)
4117 return 0;
4118
4119 loc.idx = mono_metadata_token_index (index);
4120 loc.col_idx = MONO_NESTED_CLASS_NESTED;
4121 loc.t = tdef;
4122
4123 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
4124 return 0;
4125
4126 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
4127 return mono_metadata_decode_row_col (tdef, loc.result, MONO_NESTED_CLASS_ENCLOSING) | MONO_TOKEN_TYPE_DEF;
4128 }
4129
4130 /*
4131 * mono_metadata_nesting_typedef:
4132 * @meta: metadata context
4133 * @index: typedef token
4134 *
4135 * Returns: the 1-based index into the TypeDef table of the first type
4136 * that is nested inside the type described by @index. The search starts at
4137 * @start_index. returns 0 if no such type is found.
4138 */
4139 guint32
4140 mono_metadata_nesting_typedef (MonoImage *meta, guint32 index, guint32 start_index)
4141 {
4142 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_NESTEDCLASS];
4143 guint32 start;
4144 guint32 class_index = mono_metadata_token_index (index);
4145
4146 if (!tdef->base)
4147 return 0;
4148
4149 start = start_index;
4150
4151 while (start <= tdef->rows) {
4152 if (class_index == mono_metadata_decode_row_col (tdef, start - 1, MONO_NESTED_CLASS_ENCLOSING))
4153 break;
4154 else
4155 start++;
4156 }
4157
4158 if (start > tdef->rows)
4159 return 0;
4160 else
4161 return start;
4162 }
4163
4164 /*
4165 * mono_metadata_packing_from_typedef:
4166 * @meta: metadata context
4167 * @index: token representing a type
4168 *
4169 * Returns: the info stored in the ClassLAyout table for the given typedef token
4170 * into the @packing and @size pointers.
4171 * Returns 0 if the info is not found.
4172 */
4173 guint32
4174 mono_metadata_packing_from_typedef (MonoImage *meta, guint32 index, guint32 *packing, guint32 *size)
4175 {
4176 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_CLASSLAYOUT];
4177 locator_t loc;
4178 guint32 cols [MONO_CLASS_LAYOUT_SIZE];
4179
4180 if (!tdef->base)
4181 return 0;
4182
4183 loc.idx = mono_metadata_token_index (index);
4184 loc.col_idx = MONO_CLASS_LAYOUT_PARENT;
4185 loc.t = tdef;
4186
4187 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
4188 return 0;
4189
4190 mono_metadata_decode_row (tdef, loc.result, cols, MONO_CLASS_LAYOUT_SIZE);
4191 if (packing)
4192 *packing = cols [MONO_CLASS_LAYOUT_PACKING_SIZE];
4193 if (size)
4194 *size = cols [MONO_CLASS_LAYOUT_CLASS_SIZE];
4195
4196 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
4197 return loc.result + 1;
4198 }
4199
4200 /*
4201 * mono_metadata_custom_attrs_from_index:
4202 * @meta: metadata context
4203 * @index: token representing the parent
4204 *
4205 * Returns: the 1-based index into the CustomAttribute table of the first
4206 * attribute which belongs to the metadata object described by @index.
4207 * Returns 0 if no such attribute is found.
4208 */
4209 guint32
4210 mono_metadata_custom_attrs_from_index (MonoImage *meta, guint32 index)
4211 {
4212 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_CUSTOMATTRIBUTE];
4213 locator_t loc;
4214
4215 if (!tdef->base)
4216 return 0;
4217
4218 loc.idx = index;
4219 loc.col_idx = MONO_CUSTOM_ATTR_PARENT;
4220 loc.t = tdef;
4221
4222 /* FIXME: Index translation */
4223
4224 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
4225 return 0;
4226
4227 /* Find the first entry by searching backwards */
4228 while ((loc.result > 0) && (mono_metadata_decode_row_col (tdef, loc.result - 1, MONO_CUSTOM_ATTR_PARENT) == index))
4229 loc.result --;
4230
4231 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
4232 return loc.result + 1;
4233 }
4234
4235 /*
4236 * mono_metadata_declsec_from_index:
4237 * @meta: metadata context
4238 * @index: token representing the parent
4239 *
4240 * Returns: the 0-based index into the DeclarativeSecurity table of the first
4241 * attribute which belongs to the metadata object described by @index.
4242 * Returns -1 if no such attribute is found.
4243 */
4244 guint32
4245 mono_metadata_declsec_from_index (MonoImage *meta, guint32 index)
4246 {
4247 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_DECLSECURITY];
4248 locator_t loc;
4249
4250 if (!tdef->base)
4251 return -1;
4252
4253 loc.idx = index;
4254 loc.col_idx = MONO_DECL_SECURITY_PARENT;
4255 loc.t = tdef;
4256
4257 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, declsec_locator))
4258 return -1;
4259
4260 /* Find the first entry by searching backwards */
4261 while ((loc.result > 0) && (mono_metadata_decode_row_col (tdef, loc.result - 1, MONO_DECL_SECURITY_PARENT) == index))
4262 loc.result --;
4263
4264 return loc.result;
4265 }
4266
4267 #ifdef DEBUG
4268 static void
4269 mono_backtrace (int limit)
4270 {
4271 void *array[limit];
4272 char **names;
4273 int i;
4274 backtrace (array, limit);
4275 names = backtrace_symbols (array, limit);
4276 for (i =0; i < limit; ++i) {
4277 g_print ("\t%s\n", names [i]);
4278 }
4279 g_free (names);
4280 }
4281 #endif
4282
4283 static int i8_align;
4284
4285 /*
4286 * mono_type_set_alignment:
4287 *
4288 * Set the alignment used by runtime to layout fields etc. of type TYPE to ALIGN.
4289 * This should only be used in AOT mode since the resulting layout will not match the
4290 * host abi layout.
4291 */
4292 void
4293 mono_type_set_alignment (MonoTypeEnum type, int align)
4294 {
4295 /* Support only a few types whose alignment is abi dependent */
4296 switch (type) {
4297 case MONO_TYPE_I8:
4298 i8_align = align;
4299 break;
4300 default:
4301 g_assert_not_reached ();
4302 break;
4303 }
4304 }
4305
4306 /*
4307 * mono_type_size:
4308 * @t: the type to return the size of
4309 *
4310 * Returns: the number of bytes required to hold an instance of this
4311 * type in memory
4312 */
4313 int
4314 mono_type_size (MonoType *t, int *align)
4315 {
4316 if (!t) {
4317 *align = 1;
4318 return 0;
4319 }
4320 if (t->byref) {
4321 *align = MONO_ABI_ALIGNOF (gpointer);
4322 return sizeof (gpointer);
4323 }
4324
4325 switch (t->type){
4326 case MONO_TYPE_VOID:
4327 *align = 1;
4328 return 0;
4329 case MONO_TYPE_BOOLEAN:
4330 *align = MONO_ABI_ALIGNOF (gint8);
4331 return 1;
4332 case MONO_TYPE_I1:
4333 case MONO_TYPE_U1:
4334 *align = MONO_ABI_ALIGNOF (gint8);
4335 return 1;
4336 case MONO_TYPE_CHAR:
4337 case MONO_TYPE_I2:
4338 case MONO_TYPE_U2:
4339 *align = MONO_ABI_ALIGNOF (gint16);
4340 return 2;
4341 case MONO_TYPE_I4:
4342 case MONO_TYPE_U4:
4343 *align = MONO_ABI_ALIGNOF (gint32);
4344 return 4;
4345 case MONO_TYPE_R4:
4346 *align = MONO_ABI_ALIGNOF (float);
4347 return 4;
4348 case MONO_TYPE_I8:
4349 case MONO_TYPE_U8:
4350 *align = MONO_ABI_ALIGNOF (gint64);
4351 return 8;
4352 case MONO_TYPE_R8:
4353 *align = MONO_ABI_ALIGNOF (double);
4354 return 8;
4355 case MONO_TYPE_I:
4356 case MONO_TYPE_U:
4357 *align = MONO_ABI_ALIGNOF (gpointer);
4358 return sizeof (gpointer);
4359 case MONO_TYPE_STRING:
4360 *align = MONO_ABI_ALIGNOF (gpointer);
4361 return sizeof (gpointer);
4362 case MONO_TYPE_OBJECT:
4363 *align = MONO_ABI_ALIGNOF (gpointer);
4364 return sizeof (gpointer);
4365 case MONO_TYPE_VALUETYPE: {
4366 if (t->data.klass->enumtype)
4367 return mono_type_size (mono_class_enum_basetype (t->data.klass), align);
4368 else
4369 return mono_class_value_size (t->data.klass, (guint32*)align);
4370 }
4371 case MONO_TYPE_CLASS:
4372 case MONO_TYPE_SZARRAY:
4373 case MONO_TYPE_PTR:
4374 case MONO_TYPE_FNPTR:
4375 case MONO_TYPE_ARRAY:
4376 *align = MONO_ABI_ALIGNOF (gpointer);
4377 return sizeof (gpointer);
4378 case MONO_TYPE_TYPEDBYREF:
4379 return mono_class_value_size (mono_defaults.typed_reference_class, (guint32*)align);
4380 case MONO_TYPE_GENERICINST: {
4381 MonoGenericClass *gclass = t->data.generic_class;
4382 MonoClass *container_class = gclass->container_class;
4383
4384 // g_assert (!gclass->inst->is_open);
4385
4386 if (container_class->valuetype) {
4387 if (container_class->enumtype)
4388 return mono_type_size (mono_class_enum_basetype (container_class), align);
4389 else
4390 return mono_class_value_size (mono_class_from_mono_type (t), (guint32*)align);
4391 } else {
4392 *align = MONO_ABI_ALIGNOF (gpointer);
4393 return sizeof (gpointer);
4394 }
4395 }
4396 case MONO_TYPE_VAR:
4397 case MONO_TYPE_MVAR:
4398 /* FIXME: Martin, this is wrong. */
4399 *align = MONO_ABI_ALIGNOF (gpointer);
4400 return sizeof (gpointer);
4401 default:
4402 g_error ("mono_type_size: type 0x%02x unknown", t->type);
4403 }
4404 return 0;
4405 }
4406
4407 /*
4408 * mono_type_stack_size:
4409 * @t: the type to return the size it uses on the stack
4410 *
4411 * Returns: the number of bytes required to hold an instance of this
4412 * type on the runtime stack
4413 */
4414 int
4415 mono_type_stack_size (MonoType *t, int *align)
4416 {
4417 return mono_type_stack_size_internal (t, align, FALSE);
4418 }
4419
4420 int
4421 mono_type_stack_size_internal (MonoType *t, int *align, gboolean allow_open)
4422 {
4423 int tmp;
4424 #if SIZEOF_VOID_P == SIZEOF_REGISTER
4425 int stack_slot_size = sizeof (gpointer);
4426 int stack_slot_align = MONO_ABI_ALIGNOF (gpointer);
4427 #elif SIZEOF_VOID_P < SIZEOF_REGISTER
4428 int stack_slot_size = SIZEOF_REGISTER;
4429 int stack_slot_align = SIZEOF_REGISTER;
4430 #endif
4431
4432 g_assert (t != NULL);
4433
4434 if (!align)
4435 align = &tmp;
4436
4437 if (t->byref) {
4438 *align = stack_slot_align;
4439 return stack_slot_size;
4440 }
4441
4442 switch (t->type){
4443 case MONO_TYPE_BOOLEAN:
4444 case MONO_TYPE_CHAR:
4445 case MONO_TYPE_I1:
4446 case MONO_TYPE_U1:
4447 case MONO_TYPE_I2:
4448 case MONO_TYPE_U2:
4449 case MONO_TYPE_I4:
4450 case MONO_TYPE_U4:
4451 case MONO_TYPE_I:
4452 case MONO_TYPE_U:
4453 case MONO_TYPE_STRING:
4454 case MONO_TYPE_OBJECT:
4455 case MONO_TYPE_CLASS:
4456 case MONO_TYPE_SZARRAY:
4457 case MONO_TYPE_PTR:
4458 case MONO_TYPE_FNPTR:
4459 case MONO_TYPE_ARRAY:
4460 *align = stack_slot_align;
4461 return stack_slot_size;
4462 case MONO_TYPE_VAR:
4463 case MONO_TYPE_MVAR:
4464 g_assert (allow_open);
4465 *align = stack_slot_align;
4466 return stack_slot_size;
4467 case MONO_TYPE_TYPEDBYREF:
4468 *align = stack_slot_align;
4469 return stack_slot_size * 3;
4470 case MONO_TYPE_R4:
4471 *align = MONO_ABI_ALIGNOF (float);
4472 return sizeof (float);
4473 case MONO_TYPE_I8:
4474 case MONO_TYPE_U8:
4475 *align = MONO_ABI_ALIGNOF (gint64);
4476 return sizeof (gint64);
4477 case MONO_TYPE_R8:
4478 *align = MONO_ABI_ALIGNOF (double);
4479 return sizeof (double);
4480 case MONO_TYPE_VALUETYPE: {
4481 guint32 size;
4482
4483 if (t->data.klass->enumtype)
4484 return mono_type_stack_size_internal (mono_class_enum_basetype (t->data.klass), align, allow_open);
4485 else {
4486 size = mono_class_value_size (t->data.klass, (guint32*)align);
4487
4488 *align = *align + stack_slot_align - 1;
4489 *align &= ~(stack_slot_align - 1);
4490
4491 size += stack_slot_size - 1;
4492 size &= ~(stack_slot_size - 1);
4493
4494 return size;
4495 }
4496 }
4497 case MONO_TYPE_GENERICINST: {
4498 MonoGenericClass *gclass = t->data.generic_class;
4499 MonoClass *container_class = gclass->container_class;
4500
4501 if (!allow_open)
4502 g_assert (!gclass->context.class_inst->is_open);
4503
4504 if (container_class->valuetype) {
4505 if (container_class->enumtype)
4506 return mono_type_stack_size_internal (mono_class_enum_basetype (container_class), align, allow_open);
4507 else {
4508 guint32 size = mono_class_value_size (mono_class_from_mono_type (t), (guint32*)align);
4509
4510 *align = *align + stack_slot_align - 1;
4511 *align &= ~(stack_slot_align - 1);
4512
4513 size += stack_slot_size - 1;
4514 size &= ~(stack_slot_size - 1);
4515
4516 return size;
4517 }
4518 } else {
4519 *align = stack_slot_align;
4520 return stack_slot_size;
4521 }
4522 }
4523 default:
4524 g_error ("type 0x%02x unknown", t->type);
4525 }
4526 return 0;
4527 }
4528
4529 gboolean
4530 mono_type_generic_inst_is_valuetype (MonoType *type)
4531 {
4532 g_assert (type->type == MONO_TYPE_GENERICINST);
4533 return type->data.generic_class->container_class->valuetype;
4534 }
4535
4536 gboolean
4537 mono_metadata_generic_class_is_valuetype (MonoGenericClass *gclass)
4538 {
4539 return gclass->container_class->valuetype;
4540 }
4541
4542 static gboolean
4543 _mono_metadata_generic_class_equal (const MonoGenericClass *g1, const MonoGenericClass *g2, gboolean signature_only)
4544 {
4545 MonoGenericInst *i1 = g1->context.class_inst;
4546 MonoGenericInst *i2 = g2->context.class_inst;
4547
4548 if (g1->is_dynamic != g2->is_dynamic)
4549 return FALSE;
4550 if (!mono_metadata_class_equal (g1->container_class, g2->container_class, signature_only))
4551 return FALSE;
4552 if (!mono_generic_inst_equal_full (i1, i2, signature_only))
4553 return FALSE;
4554 return g1->is_tb_open == g2->is_tb_open;
4555 }
4556
4557 static gboolean
4558 _mono_metadata_generic_class_container_equal (const MonoGenericClass *g1, MonoClass *c2, gboolean signature_only)
4559 {
4560 MonoGenericInst *i1 = g1->context.class_inst;
4561 MonoGenericInst *i2 = c2->generic_container->context.class_inst;
4562
4563 if (!mono_metadata_class_equal (g1->container_class, c2, signature_only))
4564 return FALSE;
4565 if (!mono_generic_inst_equal_full (i1, i2, signature_only))
4566 return FALSE;
4567 return !g1->is_tb_open;
4568 }
4569
4570 guint
4571 mono_metadata_generic_context_hash (const MonoGenericContext *context)
4572 {
4573 /* FIXME: check if this seed is good enough */
4574 guint hash = 0xc01dfee7;
4575 if (context->class_inst)
4576 hash = ((hash << 5) - hash) ^ mono_metadata_generic_inst_hash (context->class_inst);
4577 if (context->method_inst)
4578 hash = ((hash << 5) - hash) ^ mono_metadata_generic_inst_hash (context->method_inst);
4579 return hash;
4580 }
4581
4582 gboolean
4583 mono_metadata_generic_context_equal (const MonoGenericContext *g1, const MonoGenericContext *g2)
4584 {
4585 return g1->class_inst == g2->class_inst && g1->method_inst == g2->method_inst;
4586 }
4587
4588 /*
4589 * mono_metadata_str_hash:
4590 *
4591 * This should be used instead of g_str_hash for computing hash codes visible
4592 * outside this module, since g_str_hash () is not guaranteed to be stable
4593 * (its not the same in eglib for example).
4594 */
4595 guint
4596 mono_metadata_str_hash (gconstpointer v1)
4597 {
4598 /* Same as g_str_hash () in glib */
4599 char *p = (char *) v1;
4600 guint hash = *p;
4601
4602 while (*p++) {
4603 if (*p)
4604 hash = (hash << 5) - hash + *p;
4605 }
4606
4607 return hash;
4608 }
4609
4610 /*
4611 * mono_metadata_type_hash:
4612 * @t1: a type
4613 *
4614 * Computes an hash value for @t1 to be used in GHashTable.
4615 * The returned hash is guaranteed to be the same across executions.
4616 */
4617 guint
4618 mono_metadata_type_hash (MonoType *t1)
4619 {
4620 guint hash = t1->type;
4621
4622 hash |= t1->byref << 6; /* do not collide with t1->type values */
4623 switch (t1->type) {
4624 case MONO_TYPE_VALUETYPE:
4625 case MONO_TYPE_CLASS:
4626 case MONO_TYPE_SZARRAY: {
4627 MonoClass *class = t1->data.klass;
4628 /*
4629 * Dynamic classes must not be hashed on their type since it can change
4630 * during runtime. For example, if we hash a reference type that is
4631 * later made into a valuetype.
4632 *
4633 * This is specially problematic with generic instances since they are
4634 * inserted in a bunch of hash tables before been finished.
4635 */
4636 if (image_is_dynamic (class->image))
4637 return (t1->byref << 6) | mono_metadata_str_hash (class->name);
4638 return ((hash << 5) - hash) ^ mono_metadata_str_hash (class->name);
4639 }
4640 case MONO_TYPE_PTR:
4641 return ((hash << 5) - hash) ^ mono_metadata_type_hash (t1->data.type);
4642 case MONO_TYPE_ARRAY:
4643 return ((hash << 5) - hash) ^ mono_metadata_type_hash (&t1->data.array->eklass->byval_arg);
4644 case MONO_TYPE_GENERICINST:
4645 return ((hash << 5) - hash) ^ mono_generic_class_hash (t1->data.generic_class);
4646 case MONO_TYPE_VAR:
4647 case MONO_TYPE_MVAR:
4648 return ((hash << 5) - hash) ^ mono_metadata_generic_param_hash (t1->data.generic_param);
4649 }
4650 return hash;
4651 }
4652
4653 static guint
4654 mono_metadata_generic_param_hash (MonoGenericParam *p)
4655 {
4656 guint hash;
4657 MonoGenericParamInfo *info;
4658
4659 hash = (mono_generic_param_num (p) << 2) | p->serial;
4660 info = mono_generic_param_info (p);
4661 /* Can't hash on the owner klass/method, since those might not be set when this is called */
4662 if (info)
4663 hash = ((hash << 5) - hash) ^ info->token;
4664 return hash;
4665 }
4666
4667 static gboolean
4668 mono_metadata_generic_param_equal (MonoGenericParam *p1, MonoGenericParam *p2, gboolean signature_only)
4669 {
4670 if (p1 == p2)
4671 return TRUE;
4672 if (mono_generic_param_num (p1) != mono_generic_param_num (p2))
4673 return FALSE;
4674 if (p1->serial != p2->serial)
4675 return FALSE;
4676
4677 /*
4678 * We have to compare the image as well because if we didn't,
4679 * the generic_inst_cache lookup wouldn't care about the image
4680 * of generic params, so what could happen is that a generic
4681 * inst with params from image A is put into the cache, then
4682 * image B gets that generic inst from the cache, image A is
4683 * unloaded, so the inst is deleted, but image B still retains
4684 * a pointer to it.
4685 *
4686 * The AOT runtime doesn't set the image when it's decoding
4687 * types, so we only compare it when the owner is NULL.
4688 */
4689 if (mono_generic_param_owner (p1) == mono_generic_param_owner (p2) &&
4690 (mono_generic_param_owner (p1) || p1->image == p2->image))
4691 return TRUE;
4692
4693 /*
4694 * If `signature_only' is true, we're comparing two (method) signatures.
4695 * In this case, the owner of two type parameters doesn't need to match.
4696 */
4697
4698 return signature_only;
4699 }
4700
4701 static gboolean
4702 mono_metadata_class_equal (MonoClass *c1, MonoClass *c2, gboolean signature_only)
4703 {
4704 if (c1 == c2)
4705 return TRUE;
4706 if (c1->generic_class && c2->generic_class)
4707 return _mono_metadata_generic_class_equal (c1->generic_class, c2->generic_class, signature_only);
4708 if (c1->generic_class && c2->generic_container)
4709 return _mono_metadata_generic_class_container_equal (c1->generic_class, c2, signature_only);
4710 if (c1->generic_container && c2->generic_class)
4711 return _mono_metadata_generic_class_container_equal (c2->generic_class, c1, signature_only);
4712 if ((c1->byval_arg.type == MONO_TYPE_VAR) && (c2->byval_arg.type == MONO_TYPE_VAR))
4713 return mono_metadata_generic_param_equal (
4714 c1->byval_arg.data.generic_param, c2->byval_arg.data.generic_param, signature_only);
4715 if ((c1->byval_arg.type == MONO_TYPE_MVAR) && (c2->byval_arg.type == MONO_TYPE_MVAR))
4716 return mono_metadata_generic_param_equal (
4717 c1->byval_arg.data.generic_param, c2->byval_arg.data.generic_param, signature_only);
4718 if (signature_only &&
4719 (c1->byval_arg.type == MONO_TYPE_SZARRAY) && (c2->byval_arg.type == MONO_TYPE_SZARRAY))
4720 return mono_metadata_class_equal (c1->byval_arg.data.klass, c2->byval_arg.data.klass, signature_only);
4721 if (signature_only &&
4722 (c1->byval_arg.type == MONO_TYPE_ARRAY) && (c2->byval_arg.type == MONO_TYPE_ARRAY))
4723 return do_mono_metadata_type_equal (&c1->byval_arg, &c2->byval_arg, signature_only);
4724 return FALSE;
4725 }
4726
4727 static gboolean
4728 mono_metadata_fnptr_equal (MonoMethodSignature *s1, MonoMethodSignature *s2, gboolean signature_only)
4729 {
4730 gpointer iter1 = 0, iter2 = 0;
4731
4732 if (s1 == s2)
4733 return TRUE;
4734 if (s1->call_convention != s2->call_convention)
4735 return FALSE;
4736 if (s1->sentinelpos != s2->sentinelpos)
4737 return FALSE;
4738 if (s1->hasthis != s2->hasthis)
4739 return FALSE;
4740 if (s1->explicit_this != s2->explicit_this)
4741 return FALSE;
4742 if (! do_mono_metadata_type_equal (s1->ret, s2->ret, signature_only))
4743 return FALSE;
4744 if (s1->param_count != s2->param_count)
4745 return FALSE;
4746
4747 while (TRUE) {
4748 MonoType *t1 = mono_signature_get_params (s1, &iter1);
4749 MonoType *t2 = mono_signature_get_params (s2, &iter2);
4750
4751 if (t1 == NULL || t2 == NULL)
4752 return (t1 == t2);
4753 if (! do_mono_metadata_type_equal (t1, t2, signature_only))
4754 return FALSE;
4755 }
4756 }
4757
4758 /*
4759 * mono_metadata_type_equal:
4760 * @t1: a type
4761 * @t2: another type
4762 *
4763 * Determine if @t1 and @t2 represent the same type.
4764 * Returns: #TRUE if @t1 and @t2 are equal.
4765 */
4766 static gboolean
4767 do_mono_metadata_type_equal (MonoType *t1, MonoType *t2, gboolean signature_only)
4768 {
4769 if (t1->type != t2->type || t1->byref != t2->byref)
4770 return FALSE;
4771
4772 switch (t1->type) {
4773 case MONO_TYPE_VOID:
4774 case MONO_TYPE_BOOLEAN:
4775 case MONO_TYPE_CHAR:
4776 case MONO_TYPE_I1:
4777 case MONO_TYPE_U1:
4778 case MONO_TYPE_I2:
4779 case MONO_TYPE_U2:
4780 case MONO_TYPE_I4:
4781 case MONO_TYPE_U4:
4782 case MONO_TYPE_I8:
4783 case MONO_TYPE_U8:
4784 case MONO_TYPE_R4:
4785 case MONO_TYPE_R8:
4786 case MONO_TYPE_STRING:
4787 case MONO_TYPE_I:
4788 case MONO_TYPE_U:
4789 case MONO_TYPE_OBJECT:
4790 case MONO_TYPE_TYPEDBYREF:
4791 return TRUE;
4792 case MONO_TYPE_VALUETYPE:
4793 case MONO_TYPE_CLASS:
4794 case MONO_TYPE_SZARRAY:
4795 return mono_metadata_class_equal (t1->data.klass, t2->data.klass, signature_only);
4796 case MONO_TYPE_PTR:
4797 return do_mono_metadata_type_equal (t1->data.type, t2->data.type, signature_only);
4798 case MONO_TYPE_ARRAY:
4799 if (t1->data.array->rank != t2->data.array->rank)
4800 return FALSE;
4801 return mono_metadata_class_equal (t1->data.array->eklass, t2->data.array->eklass, signature_only);
4802 case MONO_TYPE_GENERICINST:
4803 return _mono_metadata_generic_class_equal (
4804 t1->data.generic_class, t2->data.generic_class, signature_only);
4805 case MONO_TYPE_VAR:
4806 return mono_metadata_generic_param_equal (
4807 t1->data.generic_param, t2->data.generic_param, signature_only);
4808 case MONO_TYPE_MVAR:
4809 return mono_metadata_generic_param_equal (
4810 t1->data.generic_param, t2->data.generic_param, signature_only);
4811 case MONO_TYPE_FNPTR:
4812 return mono_metadata_fnptr_equal (t1->data.method, t2->data.method, signature_only);
4813 default:
4814 g_error ("implement type compare for %0x!", t1->type);
4815 return FALSE;
4816 }
4817
4818 return FALSE;
4819 }
4820
4821 gboolean
4822 mono_metadata_type_equal (MonoType *t1, MonoType *t2)
4823 {
4824 return do_mono_metadata_type_equal (t1, t2, FALSE);
4825 }
4826
4827 /**
4828 * mono_metadata_type_equal_full:
4829 * @t1: a type
4830 * @t2: another type
4831 * @signature_only: if signature only comparison should be made
4832 *
4833 * Determine if @t1 and @t2 are signature compatible if @signature_only is #TRUE, otherwise
4834 * behaves the same way as mono_metadata_type_equal.
4835 * The function mono_metadata_type_equal(a, b) is just a shortcut for mono_metadata_type_equal_full(a, b, FALSE).
4836 * Returns: #TRUE if @t1 and @t2 are equal taking @signature_only into account.
4837 */
4838 gboolean
4839 mono_metadata_type_equal_full (MonoType *t1, MonoType *t2, gboolean signature_only)
4840 {
4841 return do_mono_metadata_type_equal (t1, t2, signature_only);
4842 }
4843
4844 /**
4845 * mono_metadata_signature_equal:
4846 * @sig1: a signature
4847 * @sig2: another signature
4848 *
4849 * Determine if @sig1 and @sig2 represent the same signature, with the
4850 * same number of arguments and the same types.
4851 * Returns: #TRUE if @sig1 and @sig2 are equal.
4852 */
4853 gboolean
4854 mono_metadata_signature_equal (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
4855 {
4856 int i;
4857
4858 if (sig1->hasthis != sig2->hasthis || sig1->param_count != sig2->param_count)
4859 return FALSE;
4860
4861 if (sig1->generic_param_count != sig2->generic_param_count)
4862 return FALSE;
4863
4864 /*
4865 * We're just comparing the signatures of two methods here:
4866 *
4867 * If we have two generic methods `void Foo<U> (U u)' and `void Bar<V> (V v)',
4868 * U and V are equal here.
4869 *
4870 * That's what the `signature_only' argument of do_mono_metadata_type_equal() is for.
4871 */
4872
4873 for (i = 0; i < sig1->param_count; i++) {
4874 MonoType *p1 = sig1->params[i];
4875 MonoType *p2 = sig2->params[i];
4876
4877 /* if (p1->attrs != p2->attrs)
4878 return FALSE;
4879 */
4880 if (!do_mono_metadata_type_equal (p1, p2, TRUE))
4881 return FALSE;
4882 }
4883
4884 if (!do_mono_metadata_type_equal (sig1->ret, sig2->ret, TRUE))
4885 return FALSE;
4886 return TRUE;
4887 }
4888
4889 /**
4890 * mono_metadata_type_dup:
4891 * @image: image to alloc memory from
4892 * @original: type to duplicate
4893 *
4894 * Returns: copy of type allocated from the image's mempool (or from the heap, if @image is null).
4895 */
4896 MonoType *
4897 mono_metadata_type_dup (MonoImage *image, const MonoType *o)
4898 {
4899 MonoType *r = NULL;
4900 int sizeof_o = MONO_SIZEOF_TYPE;
4901 if (o->num_mods)
4902 sizeof_o += o->num_mods * sizeof (MonoCustomMod);
4903
4904 r = image ? mono_image_alloc0 (image, sizeof_o) : g_malloc (sizeof_o);
4905
4906 memcpy (r, o, sizeof_o);
4907
4908 if (o->type == MONO_TYPE_PTR) {
4909 r->data.type = mono_metadata_type_dup (image, o->data.type);
4910 } else if (o->type == MONO_TYPE_ARRAY) {
4911 r->data.array = mono_dup_array_type (image, o->data.array);
4912 } else if (o->type == MONO_TYPE_FNPTR) {
4913 /*FIXME the dup'ed signature is leaked mono_metadata_free_type*/
4914 r->data.method = mono_metadata_signature_deep_dup (image, o->data.method);
4915 }
4916 return r;
4917 }
4918
4919 guint
4920 mono_signature_hash (MonoMethodSignature *sig)
4921 {
4922 guint i, res = sig->ret->type;
4923
4924 for (i = 0; i < sig->param_count; i++)
4925 res = (res << 5) - res + mono_type_hash (sig->params[i]);
4926
4927 return res;
4928 }
4929
4930 /*
4931 * mono_metadata_encode_value:
4932 * @value: value to encode
4933 * @buf: buffer where to write the compressed representation
4934 * @endbuf: pointer updated to point at the end of the encoded output
4935 *
4936 * Encodes the value @value in the compressed representation used
4937 * in metadata and stores the result in @buf. @buf needs to be big
4938 * enough to hold the data (4 bytes).
4939 */
4940 void
4941 mono_metadata_encode_value (guint32 value, char *buf, char **endbuf)
4942 {
4943 char *p = buf;
4944
4945 if (value < 0x80)
4946 *p++ = value;
4947 else if (value < 0x4000) {
4948 p [0] = 0x80 | (value >> 8);
4949 p [1] = value & 0xff;
4950 p += 2;
4951 } else {
4952 p [0] = (value >> 24) | 0xc0;
4953 p [1] = (value >> 16) & 0xff;
4954 p [2] = (value >> 8) & 0xff;
4955 p [3] = value & 0xff;
4956 p += 4;
4957 }
4958 if (endbuf)
4959 *endbuf = p;
4960 }
4961
4962 /*
4963 * mono_metadata_field_info:
4964 * @meta: the Image the field is defined in
4965 * @index: the index in the field table representing the field
4966 * @offset: a pointer to an integer where to store the offset that
4967 * may have been specified for the field in a FieldLayout table
4968 * @rva: a pointer to the RVA of the field data in the image that
4969 * may have been defined in a FieldRVA table
4970 * @marshal_spec: a pointer to the marshal spec that may have been
4971 * defined for the field in a FieldMarshal table.
4972 *
4973 * Gather info for field @index that may have been defined in the FieldLayout,
4974 * FieldRVA and FieldMarshal tables.
4975 * Either of offset, rva and marshal_spec can be NULL if you're not interested
4976 * in the data.
4977 */
4978 void
4979 mono_metadata_field_info (MonoImage *meta, guint32 index, guint32 *offset, guint32 *rva,
4980 MonoMarshalSpec **marshal_spec)
4981 {
4982 mono_metadata_field_info_full (meta, index, offset, rva, marshal_spec, FALSE);
4983 }
4984
4985 void
4986 mono_metadata_field_info_with_mempool (MonoImage *meta, guint32 index, guint32 *offset, guint32 *rva,
4987 MonoMarshalSpec **marshal_spec)
4988 {
4989 mono_metadata_field_info_full (meta, index, offset, rva, marshal_spec, TRUE);
4990 }
4991
4992 static void
4993 mono_metadata_field_info_full (MonoImage *meta, guint32 index, guint32 *offset, guint32 *rva,
4994 MonoMarshalSpec **marshal_spec, gboolean alloc_from_image)
4995 {
4996 MonoTableInfo *tdef;
4997 locator_t loc;
4998
4999 loc.idx = index + 1;
5000 if (meta->uncompressed_metadata)
5001 loc.idx = search_ptr_table (meta, MONO_TABLE_FIELD_POINTER, loc.idx);
5002
5003 if (offset) {
5004 tdef = &meta->tables [MONO_TABLE_FIELDLAYOUT];
5005
5006 loc.col_idx = MONO_FIELD_LAYOUT_FIELD;
5007 loc.t = tdef;
5008
5009 if (tdef->base && mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator)) {
5010 *offset = mono_metadata_decode_row_col (tdef, loc.result, MONO_FIELD_LAYOUT_OFFSET);
5011 } else {
5012 *offset = (guint32)-1;
5013 }
5014 }
5015 if (rva) {
5016 tdef = &meta->tables [MONO_TABLE_FIELDRVA];
5017
5018 loc.col_idx = MONO_FIELD_RVA_FIELD;
5019 loc.t = tdef;
5020
5021 if (tdef->base && mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator)) {
5022 /*
5023 * LAMESPEC: There is no signature, no nothing, just the raw data.
5024 */
5025 *rva = mono_metadata_decode_row_col (tdef, loc.result, MONO_FIELD_RVA_RVA);
5026 } else {
5027 *rva = 0;
5028 }
5029 }
5030 if (marshal_spec) {
5031 const char *p;
5032
5033 if ((p = mono_metadata_get_marshal_info (meta, index, TRUE))) {
5034 *marshal_spec = mono_metadata_parse_marshal_spec_full (alloc_from_image ? meta : NULL, meta, p);
5035 }
5036 }
5037
5038 }
5039
5040 /*
5041 * mono_metadata_get_constant_index:
5042 * @meta: the Image the field is defined in
5043 * @index: the token that may have a row defined in the constants table
5044 * @hint: possible position for the row
5045 *
5046 * @token must be a FieldDef, ParamDef or PropertyDef token.
5047 *
5048 * Returns: the index into the Constants table or 0 if not found.
5049 */
5050 guint32
5051 mono_metadata_get_constant_index (MonoImage *meta, guint32 token, guint32 hint)
5052 {
5053 MonoTableInfo *tdef;
5054 locator_t loc;
5055 guint32 index = mono_metadata_token_index (token);
5056
5057 tdef = &meta->tables [MONO_TABLE_CONSTANT];
5058 index <<= MONO_HASCONSTANT_BITS;
5059 switch (mono_metadata_token_table (token)) {
5060 case MONO_TABLE_FIELD:
5061 index |= MONO_HASCONSTANT_FIEDDEF;
5062 break;
5063 case MONO_TABLE_PARAM:
5064 index |= MONO_HASCONSTANT_PARAM;
5065 break;
5066 case MONO_TABLE_PROPERTY:
5067 index |= MONO_HASCONSTANT_PROPERTY;
5068 break;
5069 default:
5070 g_warning ("Not a valid token for the constant table: 0x%08x", token);
5071 return 0;
5072 }
5073 loc.idx = index;
5074 loc.col_idx = MONO_CONSTANT_PARENT;
5075 loc.t = tdef;
5076
5077 /* FIXME: Index translation */
5078
5079 if ((hint > 0) && (hint < tdef->rows) && (mono_metadata_decode_row_col (tdef, hint - 1, MONO_CONSTANT_PARENT) == index))
5080 return hint;
5081
5082 if (tdef->base && mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator)) {
5083 return loc.result + 1;
5084 }
5085 return 0;
5086 }
5087
5088 /*
5089 * mono_metadata_events_from_typedef:
5090 * @meta: metadata context
5091 * @index: 0-based index (in the TypeDef table) describing a type
5092 *
5093 * Returns: the 0-based index in the Event table for the events in the
5094 * type. The last event that belongs to the type (plus 1) is stored
5095 * in the @end_idx pointer.
5096 */
5097 guint32
5098 mono_metadata_events_from_typedef (MonoImage *meta, guint32 index, guint *end_idx)
5099 {
5100 locator_t loc;
5101 guint32 start, end;
5102 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_EVENTMAP];
5103
5104 *end_idx = 0;
5105
5106 if (!tdef->base)
5107 return 0;
5108
5109 loc.t = tdef;
5110 loc.col_idx = MONO_EVENT_MAP_PARENT;
5111 loc.idx = index + 1;
5112
5113 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
5114 return 0;
5115
5116 start = mono_metadata_decode_row_col (tdef, loc.result, MONO_EVENT_MAP_EVENTLIST);
5117 if (loc.result + 1 < tdef->rows) {
5118 end = mono_metadata_decode_row_col (tdef, loc.result + 1, MONO_EVENT_MAP_EVENTLIST) - 1;
5119 } else {
5120 end = meta->tables [MONO_TABLE_EVENT].rows;
5121 }
5122
5123 *end_idx = end;
5124 return start - 1;
5125 }
5126
5127 /*
5128 * mono_metadata_methods_from_event:
5129 * @meta: metadata context
5130 * @index: 0-based index (in the Event table) describing a event
5131 *
5132 * Returns: the 0-based index in the MethodDef table for the methods in the
5133 * event. The last method that belongs to the event (plus 1) is stored
5134 * in the @end_idx pointer.
5135 */
5136 guint32
5137 mono_metadata_methods_from_event (MonoImage *meta, guint32 index, guint *end_idx)
5138 {
5139 locator_t loc;
5140 guint start, end;
5141 guint32 cols [MONO_METHOD_SEMA_SIZE];
5142 MonoTableInfo *msemt = &meta->tables [MONO_TABLE_METHODSEMANTICS];
5143
5144 *end_idx = 0;
5145 if (!msemt->base)
5146 return 0;
5147
5148 if (meta->uncompressed_metadata)
5149 index = search_ptr_table (meta, MONO_TABLE_EVENT_POINTER, index + 1) - 1;
5150
5151 loc.t = msemt;
5152 loc.col_idx = MONO_METHOD_SEMA_ASSOCIATION;
5153 loc.idx = ((index + 1) << MONO_HAS_SEMANTICS_BITS) | MONO_HAS_SEMANTICS_EVENT; /* Method association coded index */
5154
5155 if (!mono_binary_search (&loc, msemt->base, msemt->rows, msemt->row_size, table_locator))
5156 return 0;
5157
5158 start = loc.result;
5159 /*
5160 * We may end up in the middle of the rows...
5161 */
5162 while (start > 0) {
5163 if (loc.idx == mono_metadata_decode_row_col (msemt, start - 1, MONO_METHOD_SEMA_ASSOCIATION))
5164 start--;
5165 else
5166 break;
5167 }
5168 end = start + 1;
5169 while (end < msemt->rows) {
5170 mono_metadata_decode_row (msemt, end, cols, MONO_METHOD_SEMA_SIZE);
5171 if (cols [MONO_METHOD_SEMA_ASSOCIATION] != loc.idx)
5172 break;
5173 ++end;
5174 }
5175 *end_idx = end;
5176 return start;
5177 }
5178
5179 /*
5180 * mono_metadata_properties_from_typedef:
5181 * @meta: metadata context
5182 * @index: 0-based index (in the TypeDef table) describing a type
5183 *
5184 * Returns: the 0-based index in the Property table for the properties in the
5185 * type. The last property that belongs to the type (plus 1) is stored
5186 * in the @end_idx pointer.
5187 */
5188 guint32
5189 mono_metadata_properties_from_typedef (MonoImage *meta, guint32 index, guint *end_idx)
5190 {
5191 locator_t loc;
5192 guint32 start, end;
5193 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_PROPERTYMAP];
5194
5195 *end_idx = 0;
5196
5197 if (!tdef->base)
5198 return 0;
5199
5200 loc.t = tdef;
5201 loc.col_idx = MONO_PROPERTY_MAP_PARENT;
5202 loc.idx = index + 1;
5203
5204 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
5205 return 0;
5206
5207 start = mono_metadata_decode_row_col (tdef, loc.result, MONO_PROPERTY_MAP_PROPERTY_LIST);
5208 if (loc.result + 1 < tdef->rows) {
5209 end = mono_metadata_decode_row_col (tdef, loc.result + 1, MONO_PROPERTY_MAP_PROPERTY_LIST) - 1;
5210 } else {
5211 end = meta->tables [MONO_TABLE_PROPERTY].rows;
5212 }
5213
5214 *end_idx = end;
5215 return start - 1;
5216 }
5217
5218 /*
5219 * mono_metadata_methods_from_property:
5220 * @meta: metadata context
5221 * @index: 0-based index (in the PropertyDef table) describing a property
5222 *
5223 * Returns: the 0-based index in the MethodDef table for the methods in the
5224 * property. The last method that belongs to the property (plus 1) is stored
5225 * in the @end_idx pointer.
5226 */
5227 guint32
5228 mono_metadata_methods_from_property (MonoImage *meta, guint32 index, guint *end_idx)
5229 {
5230 locator_t loc;
5231 guint start, end;
5232 guint32 cols [MONO_METHOD_SEMA_SIZE];
5233 MonoTableInfo *msemt = &meta->tables [MONO_TABLE_METHODSEMANTICS];
5234
5235 *end_idx = 0;
5236 if (!msemt->base)
5237 return 0;
5238
5239 if (meta->uncompressed_metadata)
5240 index = search_ptr_table (meta, MONO_TABLE_PROPERTY_POINTER, index + 1) - 1;
5241
5242 loc.t = msemt;
5243 loc.col_idx = MONO_METHOD_SEMA_ASSOCIATION;
5244 loc.idx = ((index + 1) << MONO_HAS_SEMANTICS_BITS) | MONO_HAS_SEMANTICS_PROPERTY; /* Method association coded index */
5245
5246 if (!mono_binary_search (&loc, msemt->base, msemt->rows, msemt->row_size, table_locator))
5247 return 0;
5248
5249 start = loc.result;
5250 /*
5251 * We may end up in the middle of the rows...
5252 */
5253 while (start > 0) {
5254 if (loc.idx == mono_metadata_decode_row_col (msemt, start - 1, MONO_METHOD_SEMA_ASSOCIATION))
5255 start--;
5256 else
5257 break;
5258 }
5259 end = start + 1;
5260 while (end < msemt->rows) {
5261 mono_metadata_decode_row (msemt, end, cols, MONO_METHOD_SEMA_SIZE);
5262 if (cols [MONO_METHOD_SEMA_ASSOCIATION] != loc.idx)
5263 break;
5264 ++end;
5265 }
5266 *end_idx = end;
5267 return start;
5268 }
5269
5270 guint32
5271 mono_metadata_implmap_from_method (MonoImage *meta, guint32 method_idx)
5272 {
5273 locator_t loc;
5274 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_IMPLMAP];
5275
5276 if (!tdef->base)
5277 return 0;
5278
5279 /* No index translation seems to be needed */
5280
5281 loc.t = tdef;
5282 loc.col_idx = MONO_IMPLMAP_MEMBER;
5283 loc.idx = ((method_idx + 1) << MONO_MEMBERFORWD_BITS) | MONO_MEMBERFORWD_METHODDEF;
5284
5285 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
5286 return 0;
5287
5288 return loc.result + 1;
5289 }
5290
5291 /**
5292 * @image: context where the image is created
5293 * @type_spec: typespec token
5294 * @deprecated use mono_type_create_from_typespec_checked that has proper error handling
5295 *
5296 * Creates a MonoType representing the TypeSpec indexed by the @type_spec
5297 * token.
5298 */
5299 MonoType *
5300 mono_type_create_from_typespec (MonoImage *image, guint32 type_spec)
5301 {
5302 MonoError error;
5303 MonoType *type = mono_type_create_from_typespec_checked (image, type_spec, &error);
5304 if (!type) {
5305 mono_loader_set_error_from_mono_error (&error);
5306 mono_error_cleanup (&error); /* FIXME don't swallow error*/
5307 }
5308 return type;
5309 }
5310
5311 MonoType *
5312 mono_type_create_from_typespec_checked (MonoImage *image, guint32 type_spec, MonoError *error)
5313
5314 {
5315 guint32 idx = mono_metadata_token_index (type_spec);
5316 MonoTableInfo *t;
5317 guint32 cols [MONO_TYPESPEC_SIZE];
5318 const char *ptr;
5319 guint32 len;
5320 MonoType *type, *type2;
5321
5322 mono_error_init (error);
5323
5324 mono_image_lock (image);
5325 type = g_hash_table_lookup (image->typespec_cache, GUINT_TO_POINTER (type_spec));
5326 mono_image_unlock (image);
5327 if (type)
5328 return type;
5329
5330 t = &image->tables [MONO_TABLE_TYPESPEC];
5331
5332 mono_metadata_decode_row (t, idx-1, cols, MONO_TYPESPEC_SIZE);
5333 ptr = mono_metadata_blob_heap (image, cols [MONO_TYPESPEC_SIGNATURE]);
5334
5335 if (!mono_verifier_verify_typespec_signature (image, cols [MONO_TYPESPEC_SIGNATURE], type_spec, NULL)) {
5336 mono_error_set_bad_image (error, image, "Could not verify type spec %08x.", type_spec);
5337 return NULL;
5338 }
5339
5340 len = mono_metadata_decode_value (ptr, &ptr);
5341
5342 type = mono_metadata_parse_type_internal (image, NULL, MONO_PARSE_TYPE, 0, TRUE, ptr, &ptr);
5343 if (!type) {
5344 if (mono_loader_get_last_error ())
5345 mono_error_set_from_loader_error (error);
5346 else
5347 mono_error_set_bad_image (error, image, "Could not parse type spec %08x.", type_spec);
5348 return NULL;
5349 }
5350
5351 type2 = mono_metadata_type_dup (image, type);
5352 mono_metadata_free_type (type);
5353
5354 mono_image_lock (image);
5355 type = g_hash_table_lookup (image->typespec_cache, GUINT_TO_POINTER (type_spec));
5356 /* We might leak some data in the image mempool if found */
5357 if (!type) {
5358 g_hash_table_insert (image->typespec_cache, GUINT_TO_POINTER (type_spec), type2);
5359 type = type2;
5360 }
5361 mono_image_unlock (image);
5362
5363 return type;
5364 }
5365
5366
5367 static char*
5368 mono_image_strndup (MonoImage *image, const char *data, guint len)
5369 {
5370 char *res;
5371 if (!image)
5372 return g_strndup (data, len);
5373 res = mono_image_alloc (image, len + 1);
5374 memcpy (res, data, len);
5375 res [len] = 0;
5376 return res;
5377 }
5378
5379 MonoMarshalSpec *
5380 mono_metadata_parse_marshal_spec (MonoImage *image, const char *ptr)
5381 {
5382 return mono_metadata_parse_marshal_spec_full (NULL, image, ptr);
5383 }
5384
5385 /*
5386 * If IMAGE is non-null, memory will be allocated from its mempool, otherwise it will be allocated using malloc.
5387 * PARENT_IMAGE is the image containing the marshal spec.
5388 */
5389 MonoMarshalSpec *
5390 mono_metadata_parse_marshal_spec_full (MonoImage *image, MonoImage *parent_image, const char *ptr)
5391 {
5392 MonoMarshalSpec *res;
5393 int len;
5394 const char *start = ptr;
5395
5396 /* fixme: this is incomplete, but I cant find more infos in the specs */
5397
5398 if (image)
5399 res = mono_image_alloc0 (image, sizeof (MonoMarshalSpec));
5400 else
5401 res = g_new0 (MonoMarshalSpec, 1);
5402
5403 len = mono_metadata_decode_value (ptr, &ptr);
5404 res->native = *ptr++;
5405
5406 if (res->native == MONO_NATIVE_LPARRAY) {
5407 res->data.array_data.param_num = -1;
5408 res->data.array_data.num_elem = -1;
5409 res->data.array_data.elem_mult = -1;
5410
5411 if (ptr - start <= len)
5412 res->data.array_data.elem_type = *ptr++;
5413 if (ptr - start <= len)
5414 res->data.array_data.param_num = mono_metadata_decode_value (ptr, &ptr);
5415 if (ptr - start <= len)
5416 res->data.array_data.num_elem = mono_metadata_decode_value (ptr, &ptr);
5417 if (ptr - start <= len) {
5418 /*
5419 * LAMESPEC: Older spec versions say this parameter comes before
5420 * num_elem. Never spec versions don't talk about elem_mult at
5421 * all, but csc still emits it, and it is used to distinguish
5422 * between param_num being 0, and param_num being omitted.
5423 * So if (param_num == 0) && (num_elem > 0), then
5424 * elem_mult == 0 -> the array size is num_elem
5425 * elem_mult == 1 -> the array size is @param_num + num_elem
5426 */
5427 res->data.array_data.elem_mult = mono_metadata_decode_value (ptr, &ptr);
5428 }
5429 }
5430
5431 if (res->native == MONO_NATIVE_BYVALTSTR) {
5432 if (ptr - start <= len)
5433 res->data.array_data.num_elem = mono_metadata_decode_value (ptr, &ptr);
5434 }
5435
5436 if (res->native == MONO_NATIVE_BYVALARRAY) {
5437 if (ptr - start <= len)
5438 res->data.array_data.num_elem = mono_metadata_decode_value (ptr, &ptr);
5439 }
5440
5441 if (res->native == MONO_NATIVE_CUSTOM) {
5442 /* skip unused type guid */
5443 len = mono_metadata_decode_value (ptr, &ptr);
5444 ptr += len;
5445 /* skip unused native type name */
5446 len = mono_metadata_decode_value (ptr, &ptr);
5447 ptr += len;
5448 /* read custom marshaler type name */
5449 len = mono_metadata_decode_value (ptr, &ptr);
5450 res->data.custom_data.custom_name = mono_image_strndup (image, ptr, len);
5451 ptr += len;
5452 /* read cookie string */
5453 len = mono_metadata_decode_value (ptr, &ptr);
5454 res->data.custom_data.cookie = mono_image_strndup (image, ptr, len);
5455 res->data.custom_data.image = parent_image;
5456 }
5457
5458 if (res->native == MONO_NATIVE_SAFEARRAY) {
5459 res->data.safearray_data.elem_type = 0;
5460 res->data.safearray_data.num_elem = 0;
5461 if (ptr - start <= len)
5462 res->data.safearray_data.elem_type = *ptr++;
5463 if (ptr - start <= len)
5464 res->data.safearray_data.num_elem = *ptr++;
5465 }
5466 return res;
5467 }
5468
5469 void
5470 mono_metadata_free_marshal_spec (MonoMarshalSpec *spec)
5471 {
5472 if (spec->native == MONO_NATIVE_CUSTOM) {
5473 g_free (spec->data.custom_data.custom_name);
5474 g_free (spec->data.custom_data.cookie);
5475 }
5476 g_free (spec);
5477 }
5478
5479 /**
5480 * mono_type_to_unmanaged:
5481 *
5482 * Returns: A MonoMarshalNative enumeration value (MONO_NATIVE_) value
5483 * describing the underlying native reprensetation of the type.
5484 *
5485 * In addition the value pointed by
5486 * "conv" will contain the kind of marshalling required for this
5487 * particular type one of the MONO_MARSHAL_CONV_ enumeration values.
5488 */
5489 guint32
5490 mono_type_to_unmanaged (MonoType *type, MonoMarshalSpec *mspec, gboolean as_field,
5491 gboolean unicode, MonoMarshalConv *conv)
5492 {
5493 MonoMarshalConv dummy_conv;
5494 int t = type->type;
5495
5496 if (!conv)
5497 conv = &dummy_conv;
5498
5499 *conv = MONO_MARSHAL_CONV_NONE;
5500
5501 if (type->byref)
5502 return MONO_NATIVE_UINT;
5503
5504 handle_enum:
5505 switch (t) {
5506 case MONO_TYPE_BOOLEAN:
5507 if (mspec) {
5508 switch (mspec->native) {
5509 case MONO_NATIVE_VARIANTBOOL:
5510 *conv = MONO_MARSHAL_CONV_BOOL_VARIANTBOOL;
5511 return MONO_NATIVE_VARIANTBOOL;
5512 case MONO_NATIVE_BOOLEAN:
5513 *conv = MONO_MARSHAL_CONV_BOOL_I4;
5514 return MONO_NATIVE_BOOLEAN;
5515 case MONO_NATIVE_I1:
5516 case MONO_NATIVE_U1:
5517 return mspec->native;
5518 default:
5519 g_error ("cant marshal bool to native type %02x", mspec->native);
5520 }
5521 }
5522 *conv = MONO_MARSHAL_CONV_BOOL_I4;
5523 return MONO_NATIVE_BOOLEAN;
5524 case MONO_TYPE_CHAR:
5525 if (mspec) {
5526 switch (mspec->native) {
5527 case MONO_NATIVE_U2:
5528 case MONO_NATIVE_U1:
5529 return mspec->native;
5530 default:
5531 g_error ("cant marshal char to native type %02x", mspec->native);
5532 }
5533 }
5534 return unicode ? MONO_NATIVE_U2 : MONO_NATIVE_U1;
5535 case MONO_TYPE_I1: return MONO_NATIVE_I1;
5536 case MONO_TYPE_U1: return MONO_NATIVE_U1;
5537 case MONO_TYPE_I2: return MONO_NATIVE_I2;
5538 case MONO_TYPE_U2: return MONO_NATIVE_U2;
5539 case MONO_TYPE_I4: return MONO_NATIVE_I4;
5540 case MONO_TYPE_U4: return MONO_NATIVE_U4;
5541 case MONO_TYPE_I8: return MONO_NATIVE_I8;
5542 case MONO_TYPE_U8: return MONO_NATIVE_U8;
5543 case MONO_TYPE_R4: return MONO_NATIVE_R4;
5544 case MONO_TYPE_R8: return MONO_NATIVE_R8;
5545 case MONO_TYPE_STRING:
5546 if (mspec) {
5547 switch (mspec->native) {
5548 case MONO_NATIVE_BSTR:
5549 *conv = MONO_MARSHAL_CONV_STR_BSTR;
5550 return MONO_NATIVE_BSTR;
5551 case MONO_NATIVE_LPSTR:
5552 *conv = MONO_MARSHAL_CONV_STR_LPSTR;
5553 return MONO_NATIVE_LPSTR;
5554 case MONO_NATIVE_LPWSTR:
5555 *conv = MONO_MARSHAL_CONV_STR_LPWSTR;
5556 return MONO_NATIVE_LPWSTR;
5557 case MONO_NATIVE_LPTSTR:
5558 *conv = MONO_MARSHAL_CONV_STR_LPTSTR;
5559 return MONO_NATIVE_LPTSTR;
5560 case MONO_NATIVE_ANSIBSTR:
5561 *conv = MONO_MARSHAL_CONV_STR_ANSIBSTR;
5562 return MONO_NATIVE_ANSIBSTR;
5563 case MONO_NATIVE_TBSTR:
5564 *conv = MONO_MARSHAL_CONV_STR_TBSTR;
5565 return MONO_NATIVE_TBSTR;
5566 case MONO_NATIVE_BYVALTSTR:
5567 if (unicode)
5568 *conv = MONO_MARSHAL_CONV_STR_BYVALWSTR;
5569 else
5570 *conv = MONO_MARSHAL_CONV_STR_BYVALSTR;
5571 return MONO_NATIVE_BYVALTSTR;
5572 default:
5573 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);
5574 }
5575 }
5576 if (unicode) {
5577 *conv = MONO_MARSHAL_CONV_STR_LPWSTR;
5578 return MONO_NATIVE_LPWSTR;
5579 }
5580 else {
5581 *conv = MONO_MARSHAL_CONV_STR_LPSTR;
5582 return MONO_NATIVE_LPSTR;
5583 }
5584 case MONO_TYPE_PTR: return MONO_NATIVE_UINT;
5585 case MONO_TYPE_VALUETYPE: /*FIXME*/
5586 if (type->data.klass->enumtype) {
5587 t = mono_class_enum_basetype (type->data.klass)->type;
5588 goto handle_enum;
5589 }
5590 if (type->data.klass == mono_defaults.handleref_class){
5591 *conv = MONO_MARSHAL_CONV_HANDLEREF;
5592 return MONO_NATIVE_INT;
5593 }
5594 return MONO_NATIVE_STRUCT;
5595 case MONO_TYPE_SZARRAY:
5596 case MONO_TYPE_ARRAY:
5597 if (mspec) {
5598 switch (mspec->native) {
5599 case MONO_NATIVE_BYVALARRAY:
5600 if ((type->data.klass->element_class == mono_defaults.char_class) && !unicode)
5601 *conv = MONO_MARSHAL_CONV_ARRAY_BYVALCHARARRAY;
5602 else
5603 *conv = MONO_MARSHAL_CONV_ARRAY_BYVALARRAY;
5604 return MONO_NATIVE_BYVALARRAY;
5605 case MONO_NATIVE_SAFEARRAY:
5606 *conv = MONO_MARSHAL_CONV_ARRAY_SAVEARRAY;
5607 return MONO_NATIVE_SAFEARRAY;
5608 case MONO_NATIVE_LPARRAY:
5609 *conv = MONO_MARSHAL_CONV_ARRAY_LPARRAY;
5610 return MONO_NATIVE_LPARRAY;
5611 default:
5612 g_error ("cant marshal array as native type %02x", mspec->native);
5613 }
5614 }
5615
5616 *conv = MONO_MARSHAL_CONV_ARRAY_LPARRAY;
5617 return MONO_NATIVE_LPARRAY;
5618 case MONO_TYPE_I: return MONO_NATIVE_INT;
5619 case MONO_TYPE_U: return MONO_NATIVE_UINT;
5620 case MONO_TYPE_CLASS:
5621 case MONO_TYPE_OBJECT: {
5622 /* FIXME : we need to handle ArrayList and StringBuilder here, probably */
5623 if (mspec) {
5624 switch (mspec->native) {
5625 case MONO_NATIVE_STRUCT:
5626 return MONO_NATIVE_STRUCT;
5627 case MONO_NATIVE_CUSTOM:
5628 return MONO_NATIVE_CUSTOM;
5629 case MONO_NATIVE_INTERFACE:
5630 *conv = MONO_MARSHAL_CONV_OBJECT_INTERFACE;
5631 return MONO_NATIVE_INTERFACE;
5632 case MONO_NATIVE_IDISPATCH:
5633 *conv = MONO_MARSHAL_CONV_OBJECT_IDISPATCH;
5634 return MONO_NATIVE_IDISPATCH;
5635 case MONO_NATIVE_IUNKNOWN:
5636 *conv = MONO_MARSHAL_CONV_OBJECT_IUNKNOWN;
5637 return MONO_NATIVE_IUNKNOWN;
5638 case MONO_NATIVE_FUNC:
5639 if (t == MONO_TYPE_CLASS && (type->data.klass == mono_defaults.multicastdelegate_class ||
5640 type->data.klass == mono_defaults.delegate_class ||
5641 type->data.klass->parent == mono_defaults.multicastdelegate_class)) {
5642 *conv = MONO_MARSHAL_CONV_DEL_FTN;
5643 return MONO_NATIVE_FUNC;
5644 }
5645 /* Fall through */
5646 default:
5647 g_error ("cant marshal object as native type %02x", mspec->native);
5648 }
5649 }
5650 if (t == MONO_TYPE_CLASS && (type->data.klass == mono_defaults.multicastdelegate_class ||
5651 type->data.klass == mono_defaults.delegate_class ||
5652 type->data.klass->parent == mono_defaults.multicastdelegate_class)) {
5653 *conv = MONO_MARSHAL_CONV_DEL_FTN;
5654 return MONO_NATIVE_FUNC;
5655 }
5656 if (mono_defaults.safehandle_class && type->data.klass == mono_defaults.safehandle_class){
5657 *conv = MONO_MARSHAL_CONV_SAFEHANDLE;
5658 return MONO_NATIVE_INT;
5659 }
5660 *conv = MONO_MARSHAL_CONV_OBJECT_STRUCT;
5661 return MONO_NATIVE_STRUCT;
5662 }
5663 case MONO_TYPE_FNPTR: return MONO_NATIVE_FUNC;
5664 case MONO_TYPE_GENERICINST:
5665 type = &type->data.generic_class->container_class->byval_arg;
5666 t = type->type;
5667 goto handle_enum;
5668 case MONO_TYPE_TYPEDBYREF:
5669 default:
5670 g_error ("type 0x%02x not handled in marshal", t);
5671 }
5672 return MONO_NATIVE_MAX;
5673 }
5674
5675 const char*
5676 mono_metadata_get_marshal_info (MonoImage *meta, guint32 idx, gboolean is_field)
5677 {
5678 locator_t loc;
5679 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_FIELDMARSHAL];
5680
5681 if (!tdef->base)
5682 return NULL;
5683
5684 loc.t = tdef;
5685 loc.col_idx = MONO_FIELD_MARSHAL_PARENT;
5686 loc.idx = ((idx + 1) << MONO_HAS_FIELD_MARSHAL_BITS) | (is_field? MONO_HAS_FIELD_MARSHAL_FIELDSREF: MONO_HAS_FIELD_MARSHAL_PARAMDEF);
5687
5688 /* FIXME: Index translation */
5689
5690 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
5691 return NULL;
5692
5693 return mono_metadata_blob_heap (meta, mono_metadata_decode_row_col (tdef, loc.result, MONO_FIELD_MARSHAL_NATIVE_TYPE));
5694 }
5695
5696 MonoMethod*
5697 method_from_method_def_or_ref (MonoImage *m, guint32 tok, MonoGenericContext *context)
5698 {
5699 MonoError error;
5700 MonoMethod *result = NULL;
5701 guint32 idx = tok >> MONO_METHODDEFORREF_BITS;
5702
5703 switch (tok & MONO_METHODDEFORREF_MASK) {
5704 case MONO_METHODDEFORREF_METHODDEF:
5705 result = mono_get_method_checked (m, MONO_TOKEN_METHOD_DEF | idx, NULL, context, &error);
5706 break;
5707 case MONO_METHODDEFORREF_METHODREF:
5708 result = mono_get_method_checked (m, MONO_TOKEN_MEMBER_REF | idx, NULL, context, &error);
5709 break;
5710 default:
5711 g_assert_not_reached ();
5712 }
5713
5714 if (!mono_error_ok (&error)) {
5715 mono_loader_set_error_from_mono_error (&error);
5716 mono_error_cleanup (&error);
5717 }
5718 return result;
5719 }
5720
5721 /*
5722 * mono_class_get_overrides_full:
5723 *
5724 * Return the method overrides belonging to class @type_token in @overrides, and
5725 * the number of overrides in @num_overrides.
5726 *
5727 * Returns: TRUE on success, FALSE on failure.
5728 */
5729 gboolean
5730 mono_class_get_overrides_full (MonoImage *image, guint32 type_token, MonoMethod ***overrides, gint32 *num_overrides,
5731 MonoGenericContext *generic_context)
5732 {
5733 MonoError error;
5734 locator_t loc;
5735 MonoTableInfo *tdef = &image->tables [MONO_TABLE_METHODIMPL];
5736 guint32 start, end;
5737 gint32 i, num;
5738 guint32 cols [MONO_METHODIMPL_SIZE];
5739 MonoMethod **result;
5740 gint32 ok = TRUE;
5741
5742 *overrides = NULL;
5743 if (num_overrides)
5744 *num_overrides = 0;
5745
5746 if (!tdef->base)
5747 return TRUE;
5748
5749 loc.t = tdef;
5750 loc.col_idx = MONO_METHODIMPL_CLASS;
5751 loc.idx = mono_metadata_token_index (type_token);
5752
5753 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
5754 return TRUE;
5755
5756 start = loc.result;
5757 end = start + 1;
5758 /*
5759 * We may end up in the middle of the rows...
5760 */
5761 while (start > 0) {
5762 if (loc.idx == mono_metadata_decode_row_col (tdef, start - 1, MONO_METHODIMPL_CLASS))
5763 start--;
5764 else
5765 break;
5766 }
5767 while (end < tdef->rows) {
5768 if (loc.idx == mono_metadata_decode_row_col (tdef, end, MONO_METHODIMPL_CLASS))
5769 end++;
5770 else
5771 break;
5772 }
5773 num = end - start;
5774 result = g_new (MonoMethod*, num * 2);
5775 for (i = 0; i < num; ++i) {
5776 MonoMethod *method;
5777
5778 if (!mono_verifier_verify_methodimpl_row (image, start + i, &error)) {
5779 mono_error_cleanup (&error);
5780 ok = FALSE;
5781 break;
5782 }
5783
5784 mono_metadata_decode_row (tdef, start + i, cols, MONO_METHODIMPL_SIZE);
5785 method = method_from_method_def_or_ref (
5786 image, cols [MONO_METHODIMPL_DECLARATION], generic_context);
5787 if (method == NULL)
5788 ok = FALSE;
5789 result [i * 2] = method;
5790 method = method_from_method_def_or_ref (
5791 image, cols [MONO_METHODIMPL_BODY], generic_context);
5792 if (method == NULL)
5793 ok = FALSE;
5794 result [i * 2 + 1] = method;
5795 }
5796
5797 *overrides = result;
5798 if (num_overrides)
5799 *num_overrides = num;
5800 return ok;
5801 }
5802
5803 /**
5804 * mono_guid_to_string:
5805 *
5806 * Converts a 16 byte Microsoft GUID to the standard string representation.
5807 */
5808 char *
5809 mono_guid_to_string (const guint8 *guid)
5810 {
5811 return g_strdup_printf ("%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
5812 guid[3], guid[2], guid[1], guid[0],
5813 guid[5], guid[4],
5814 guid[7], guid[6],
5815 guid[8], guid[9],
5816 guid[10], guid[11], guid[12], guid[13], guid[14], guid[15]);
5817 }
5818
5819 static gboolean
5820 get_constraints (MonoImage *image, int owner, MonoClass ***constraints, MonoGenericContainer *container, MonoError *error)
5821 {
5822 MonoTableInfo *tdef = &image->tables [MONO_TABLE_GENERICPARAMCONSTRAINT];
5823 guint32 cols [MONO_GENPARCONSTRAINT_SIZE];
5824 guint32 i, token, found;
5825 MonoClass *klass, **res;
5826 GSList *cons = NULL, *tmp;
5827 MonoGenericContext *context = &container->context;
5828
5829 mono_error_init (error);
5830
5831 *constraints = NULL;
5832 found = 0;
5833 for (i = 0; i < tdef->rows; ++i) {
5834 mono_metadata_decode_row (tdef, i, cols, MONO_GENPARCONSTRAINT_SIZE);
5835 if (cols [MONO_GENPARCONSTRAINT_GENERICPAR] == owner) {
5836 token = mono_metadata_token_from_dor (cols [MONO_GENPARCONSTRAINT_CONSTRAINT]);
5837 klass = mono_class_get_and_inflate_typespec_checked (image, token, context, error);
5838 if (!klass) {
5839 g_slist_free (cons);
5840 return FALSE;
5841 }
5842 cons = g_slist_append (cons, klass);
5843 ++found;
5844 } else {
5845 /* contiguous list finished */
5846 if (found)
5847 break;
5848 }
5849 }
5850 if (!found)
5851 return TRUE;
5852 res = mono_image_alloc0 (image, sizeof (MonoClass*) * (found + 1));
5853 for (i = 0, tmp = cons; i < found; ++i, tmp = tmp->next) {
5854 res [i] = tmp->data;
5855 }
5856 g_slist_free (cons);
5857 *constraints = res;
5858 return TRUE;
5859 }
5860
5861 /*
5862 * mono_metadata_get_generic_param_row:
5863 *
5864 * @image:
5865 * @token: TypeOrMethodDef token, owner for GenericParam
5866 * @owner: coded token, set on return
5867 *
5868 * Returns: 1-based row-id in the GenericParam table whose
5869 * owner is @token. 0 if not found.
5870 */
5871 guint32
5872 mono_metadata_get_generic_param_row (MonoImage *image, guint32 token, guint32 *owner)
5873 {
5874 MonoTableInfo *tdef = &image->tables [MONO_TABLE_GENERICPARAM];
5875 locator_t loc;
5876
5877 g_assert (owner);
5878 if (!tdef->base)
5879 return 0;
5880
5881 if (mono_metadata_token_table (token) == MONO_TABLE_TYPEDEF)
5882 *owner = MONO_TYPEORMETHOD_TYPE;
5883 else if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
5884 *owner = MONO_TYPEORMETHOD_METHOD;
5885 else {
5886 g_error ("wrong token %x to get_generic_param_row", token);
5887 return 0;
5888 }
5889 *owner |= mono_metadata_token_index (token) << MONO_TYPEORMETHOD_BITS;
5890
5891 loc.idx = *owner;
5892 loc.col_idx = MONO_GENERICPARAM_OWNER;
5893 loc.t = tdef;
5894
5895 if (!mono_binary_search (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
5896 return 0;
5897
5898 /* Find the first entry by searching backwards */
5899 while ((loc.result > 0) && (mono_metadata_decode_row_col (tdef, loc.result - 1, MONO_GENERICPARAM_OWNER) == loc.idx))
5900 loc.result --;
5901
5902 return loc.result + 1;
5903 }
5904
5905 gboolean
5906 mono_metadata_has_generic_params (MonoImage *image, guint32 token)
5907 {
5908 guint32 owner;
5909 return mono_metadata_get_generic_param_row (image, token, &owner);
5910 }
5911
5912 /*
5913 * Memory is allocated from IMAGE's mempool.
5914 */
5915 gboolean
5916 mono_metadata_load_generic_param_constraints_checked (MonoImage *image, guint32 token,
5917 MonoGenericContainer *container, MonoError *error)
5918 {
5919
5920 guint32 start_row, i, owner;
5921 mono_error_init (error);
5922
5923 if (! (start_row = mono_metadata_get_generic_param_row (image, token, &owner)))
5924 return TRUE;
5925 for (i = 0; i < container->type_argc; i++) {
5926 if (!get_constraints (image, start_row + i, &mono_generic_container_get_param_info (container, i)->constraints, container, error)) {
5927 g_assert (!mono_loader_get_last_error ());
5928 return FALSE;
5929 }
5930 }
5931 return TRUE;
5932 }
5933
5934 /*
5935 * mono_metadata_load_generic_params:
5936 *
5937 * Load the type parameters from the type or method definition @token.
5938 *
5939 * Use this method after parsing a type or method definition to figure out whether it's a generic
5940 * type / method. When parsing a method definition, @parent_container points to the generic container
5941 * of the current class, if any.
5942 *
5943 * Note: This method does not load the constraints: for typedefs, this has to be done after fully
5944 * creating the type.
5945 *
5946 * Returns: NULL if @token is not a generic type or method definition or the new generic container.
5947 *
5948 * LOCKING: Acquires the loader lock
5949 *
5950 */
5951 MonoGenericContainer *
5952 mono_metadata_load_generic_params (MonoImage *image, guint32 token, MonoGenericContainer *parent_container)
5953 {
5954 MonoTableInfo *tdef = &image->tables [MONO_TABLE_GENERICPARAM];
5955 guint32 cols [MONO_GENERICPARAM_SIZE];
5956 guint32 i, owner = 0, n;
5957 MonoGenericContainer *container;
5958 MonoGenericParamFull *params;
5959 MonoGenericContext *context;
5960
5961 if (!(i = mono_metadata_get_generic_param_row (image, token, &owner)))
5962 return NULL;
5963 mono_metadata_decode_row (tdef, i - 1, cols, MONO_GENERICPARAM_SIZE);
5964 params = NULL;
5965 n = 0;
5966 container = mono_image_alloc0 (image, sizeof (MonoGenericContainer));
5967 container->image = image;
5968 do {
5969 n++;
5970 params = g_realloc (params, sizeof (MonoGenericParamFull) * n);
5971 memset (&params [n - 1], 0, sizeof (MonoGenericParamFull));
5972 params [n - 1].param.owner = container;
5973 params [n - 1].param.num = cols [MONO_GENERICPARAM_NUMBER];
5974 params [n - 1].info.token = i | MONO_TOKEN_GENERIC_PARAM;
5975 params [n - 1].info.flags = cols [MONO_GENERICPARAM_FLAGS];
5976 params [n - 1].info.name = mono_metadata_string_heap (image, cols [MONO_GENERICPARAM_NAME]);
5977 if (params [n - 1].param.num != n - 1)
5978 g_warning ("GenericParam table unsorted or hole in generic param sequence: token %d", i);
5979 if (++i > tdef->rows)
5980 break;
5981 mono_metadata_decode_row (tdef, i - 1, cols, MONO_GENERICPARAM_SIZE);
5982 } while (cols [MONO_GENERICPARAM_OWNER] == owner);
5983
5984 container->type_argc = n;
5985 container->type_params = mono_image_alloc0 (image, sizeof (MonoGenericParamFull) * n);
5986 memcpy (container->type_params, params, sizeof (MonoGenericParamFull) * n);
5987 g_free (params);
5988 container->parent = parent_container;
5989
5990 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
5991 container->is_method = 1;
5992
5993 g_assert (container->parent == NULL || container->is_method);
5994
5995 context = &container->context;
5996 if (container->is_method) {
5997 context->class_inst = container->parent ? container->parent->context.class_inst : NULL;
5998 context->method_inst = mono_get_shared_generic_inst (container);
5999 } else {
6000 context->class_inst = mono_get_shared_generic_inst (container);
6001 }
6002
6003 return container;
6004 }
6005
6006 MonoGenericInst *
6007 mono_get_shared_generic_inst (MonoGenericContainer *container)
6008 {
6009 MonoType **type_argv;
6010 MonoType *helper;
6011 MonoGenericInst *nginst;
6012 int i;
6013
6014 type_argv = g_new0 (MonoType *, container->type_argc);
6015 helper = g_new0 (MonoType, container->type_argc);
6016
6017 for (i = 0; i < container->type_argc; i++) {
6018 MonoType *t = &helper [i];
6019
6020 t->type = container->is_method ? MONO_TYPE_MVAR : MONO_TYPE_VAR;
6021 t->data.generic_param = mono_generic_container_get_param (container, i);
6022
6023 type_argv [i] = t;
6024 }
6025
6026 nginst = mono_metadata_get_generic_inst (container->type_argc, type_argv);
6027
6028 g_free (type_argv);
6029 g_free (helper);
6030
6031 return nginst;
6032 }
6033
6034 /**
6035 * mono_type_is_byref:
6036 * @type: the MonoType operated on
6037 *
6038 * Returns: #TRUE if @type represents a type passed by reference,
6039 * #FALSE otherwise.
6040 */
6041 gboolean
6042 mono_type_is_byref (MonoType *type)
6043 {
6044 return type->byref;
6045 }
6046
6047 /**
6048 * mono_type_get_type:
6049 * @type: the MonoType operated on
6050 *
6051 * Returns: the IL type value for @type. This is one of the MonoTypeEnum
6052 * enum members like MONO_TYPE_I4 or MONO_TYPE_STRING.
6053 */
6054 int
6055 mono_type_get_type (MonoType *type)
6056 {
6057 return type->type;
6058 }
6059
6060 /**
6061 * mono_type_get_signature:
6062 * @type: the MonoType operated on
6063 *
6064 * It is only valid to call this function if @type is a MONO_TYPE_FNPTR.
6065 *
6066 * Returns: the MonoMethodSignature pointer that describes the signature
6067 * of the function pointer @type represents.
6068 */
6069 MonoMethodSignature*
6070 mono_type_get_signature (MonoType *type)
6071 {
6072 g_assert (type->type == MONO_TYPE_FNPTR);
6073 return type->data.method;
6074 }
6075
6076 /**
6077 * mono_type_get_class:
6078 * @type: the MonoType operated on
6079 *
6080 * It is only valid to call this function if @type is a MONO_TYPE_CLASS or a
6081 * MONO_TYPE_VALUETYPE. For more general functionality, use mono_class_from_mono_type (),
6082 * instead
6083 *
6084 * Returns: the MonoClass pointer that describes the class that @type represents.
6085 */
6086 MonoClass*
6087 mono_type_get_class (MonoType *type)
6088 {
6089 /* FIXME: review the runtime users before adding the assert here */
6090 return type->data.klass;
6091 }
6092
6093 /**
6094 * mono_type_get_array_type:
6095 * @type: the MonoType operated on
6096 *
6097 * It is only valid to call this function if @type is a MONO_TYPE_ARRAY.
6098 *
6099 * Returns: a MonoArrayType struct describing the array type that @type
6100 * represents. The info includes details such as rank, array element type
6101 * and the sizes and bounds of multidimensional arrays.
6102 */
6103 MonoArrayType*
6104 mono_type_get_array_type (MonoType *type)
6105 {
6106 return type->data.array;
6107 }
6108
6109 /**
6110 * mono_type_get_ptr_type:
6111 * @type: the MonoType operated on
6112 *
6113 * It is only valid to call this function if @type is a MONO_TYPE_PTR.
6114 * instead
6115 *
6116 * Returns: the MonoType pointer that describes the type that @type
6117 * represents a pointer to.
6118 */
6119 MonoType*
6120 mono_type_get_ptr_type (MonoType *type)
6121 {
6122 g_assert (type->type == MONO_TYPE_PTR);
6123 return type->data.type;
6124 }
6125
6126 MonoClass*
6127 mono_type_get_modifiers (MonoType *type, gboolean *is_required, gpointer *iter)
6128 {
6129 /* FIXME: implement */
6130 return NULL;
6131 }
6132
6133 /**
6134 * mono_type_is_struct:
6135 * @type: the MonoType operated on
6136 *
6137 * Returns: #TRUE is @type is a struct, that is a ValueType but not en enum
6138 * or a basic type like System.Int32. #FALSE otherwise.
6139 */
6140 mono_bool
6141 mono_type_is_struct (MonoType *type)
6142 {
6143 return (!type->byref && ((type->type == MONO_TYPE_VALUETYPE &&
6144 !type->data.klass->enumtype) || (type->type == MONO_TYPE_TYPEDBYREF) ||
6145 ((type->type == MONO_TYPE_GENERICINST) &&
6146 mono_metadata_generic_class_is_valuetype (type->data.generic_class) &&
6147 !type->data.generic_class->container_class->enumtype)));
6148 }
6149
6150 /**
6151 * mono_type_is_void:
6152 * @type: the MonoType operated on
6153 *
6154 * Returns: #TRUE is @type is System.Void. #FALSE otherwise.
6155 */
6156 mono_bool
6157 mono_type_is_void (MonoType *type)
6158 {
6159 return (type && (type->type == MONO_TYPE_VOID) && !type->byref);
6160 }
6161
6162 /**
6163 * mono_type_is_pointer:
6164 * @type: the MonoType operated on
6165 *
6166 * Returns: #TRUE is @type is a managed or unmanaged pointer type. #FALSE otherwise.
6167 */
6168 mono_bool
6169 mono_type_is_pointer (MonoType *type)
6170 {
6171 return (type && ((type->byref || (type->type == MONO_TYPE_I) || type->type == MONO_TYPE_STRING)
6172 || (type->type == MONO_TYPE_SZARRAY) || (type->type == MONO_TYPE_CLASS) ||
6173 (type->type == MONO_TYPE_U) || (type->type == MONO_TYPE_OBJECT) ||
6174 (type->type == MONO_TYPE_ARRAY) || (type->type == MONO_TYPE_PTR) ||
6175 (type->type == MONO_TYPE_FNPTR)));
6176 }
6177
6178 /**
6179 * mono_type_is_reference:
6180 * @type: the MonoType operated on
6181 *
6182 * Returns: #TRUE is @type represents an object reference . #FALSE otherwise.
6183 */
6184 mono_bool
6185 mono_type_is_reference (MonoType *type)
6186 {
6187 return (type && (((type->type == MONO_TYPE_STRING) ||
6188 (type->type == MONO_TYPE_SZARRAY) || (type->type == MONO_TYPE_CLASS) ||
6189 (type->type == MONO_TYPE_OBJECT) || (type->type == MONO_TYPE_ARRAY)) ||
6190 ((type->type == MONO_TYPE_GENERICINST) &&
6191 !mono_metadata_generic_class_is_valuetype (type->data.generic_class))));
6192 }
6193
6194 /**
6195 * mono_signature_get_return_type:
6196 * @sig: the method signature inspected
6197 *
6198 * Returns: the return type of the method signature @sig
6199 */
6200 MonoType*
6201 mono_signature_get_return_type (MonoMethodSignature *sig)
6202 {
6203 return sig->ret;
6204 }
6205
6206 /**
6207 * mono_signature_get_params:
6208 * @sig: the method signature inspected
6209 * #iter: pointer to an iterator
6210 *
6211 * Iterates over the parameters for the method signature @sig.
6212 * A void* pointer must be initualized to #NULL to start the iteration
6213 * and it's address is passed to this function repeteadly until it returns
6214 * #NULL.
6215 *
6216 * Returns: the next parameter type of the method signature @sig,
6217 * #NULL when finished.
6218 */
6219 MonoType*
6220 mono_signature_get_params (MonoMethodSignature *sig, gpointer *iter)
6221 {
6222 MonoType** type;
6223 if (!iter)
6224 return NULL;
6225 if (!*iter) {
6226 /* start from the first */
6227 if (sig->param_count) {
6228 *iter = &sig->params [0];
6229 return sig->params [0];
6230 } else {
6231 /* no method */
6232 return NULL;
6233 }
6234 }
6235 type = *iter;
6236 type++;
6237 if (type < &sig->params [sig->param_count]) {
6238 *iter = type;
6239 return *type;
6240 }
6241 return NULL;
6242 }
6243
6244 /**
6245 * mono_signature_get_param_count:
6246 * @sig: the method signature inspected
6247 *
6248 * Returns: the number of parameters in the method signature @sig.
6249 */
6250 guint32
6251 mono_signature_get_param_count (MonoMethodSignature *sig)
6252 {
6253 return sig->param_count;
6254 }
6255
6256 /**
6257 * mono_signature_get_call_conv:
6258 * @sig: the method signature inspected
6259 *
6260 * Returns: the call convention of the method signature @sig.
6261 */
6262 guint32
6263 mono_signature_get_call_conv (MonoMethodSignature *sig)
6264 {
6265 return sig->call_convention;
6266 }
6267
6268 /**
6269 * mono_signature_vararg_start:
6270 * @sig: the method signature inspected
6271 *
6272 * Returns: the number of the first vararg parameter in the
6273 * method signature @sig. -1 if this is not a vararg signature.
6274 */
6275 int
6276 mono_signature_vararg_start (MonoMethodSignature *sig)
6277 {
6278 return sig->sentinelpos;
6279 }
6280
6281 /**
6282 * mono_signature_is_instance:
6283 * @sig: the method signature inspected
6284 *
6285 * Returns: #TRUE if this the method signature @sig has an implicit
6286 * first instance argument. #FALSE otherwise.
6287 */
6288 gboolean
6289 mono_signature_is_instance (MonoMethodSignature *sig)
6290 {
6291 return sig->hasthis;
6292 }
6293
6294 /**
6295 * mono_signature_param_is_out
6296 * @sig: the method signature inspected
6297 * @param_num: the 0-based index of the inspected parameter
6298 *
6299 * Returns: #TRUE if the parameter is an out parameter, #FALSE
6300 * otherwise.
6301 */
6302 mono_bool
6303 mono_signature_param_is_out (MonoMethodSignature *sig, int param_num)
6304 {
6305 g_assert (param_num >= 0 && param_num < sig->param_count);
6306 return (sig->params [param_num]->attrs & PARAM_ATTRIBUTE_OUT) != 0;
6307 }
6308
6309 /**
6310 * mono_signature_explicit_this:
6311 * @sig: the method signature inspected
6312 *
6313 * Returns: #TRUE if this the method signature @sig has an explicit
6314 * instance argument. #FALSE otherwise.
6315 */
6316 gboolean
6317 mono_signature_explicit_this (MonoMethodSignature *sig)
6318 {
6319 return sig->explicit_this;
6320 }
6321
6322 /* for use with allocated memory blocks (assumes alignment is to 8 bytes) */
6323 guint
6324 mono_aligned_addr_hash (gconstpointer ptr)
6325 {
6326 return GPOINTER_TO_UINT (ptr) >> 3;
6327 }
6328
6329 /*
6330 * If @field belongs to an inflated generic class, return the corresponding field of the
6331 * generic type definition class.
6332 */
6333 MonoClassField*
6334 mono_metadata_get_corresponding_field_from_generic_type_definition (MonoClassField *field)
6335 {
6336 MonoClass *gtd;
6337 int offset;
6338
6339 if (!field->parent->generic_class)
6340 return field;
6341
6342 gtd = field->parent->generic_class->container_class;
6343 offset = field - field->parent->fields;
6344 return gtd->fields + offset;
6345 }
6346
6347 /*
6348 * If @event belongs to an inflated generic class, return the corresponding event of the
6349 * generic type definition class.
6350 */
6351 MonoEvent*
6352 mono_metadata_get_corresponding_event_from_generic_type_definition (MonoEvent *event)
6353 {
6354 MonoClass *gtd;
6355 int offset;
6356
6357 if (!event->parent->generic_class)
6358 return event;
6359
6360 gtd = event->parent->generic_class->container_class;
6361 offset = event - event->parent->ext->events;
6362 return gtd->ext->events + offset;
6363 }
6364
6365 /*
6366 * If @property belongs to an inflated generic class, return the corresponding property of the
6367 * generic type definition class.
6368 */
6369 MonoProperty*
6370 mono_metadata_get_corresponding_property_from_generic_type_definition (MonoProperty *property)
6371 {
6372 MonoClass *gtd;
6373 int offset;
6374
6375 if (!property->parent->generic_class)
6376 return property;
6377
6378 gtd = property->parent->generic_class->container_class;
6379 offset = property - property->parent->ext->properties;
6380 return gtd->ext->properties + offset;
6381 }
6382
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