2 * metadata.c: Routines for accessing the metadata
5 * Miguel de Icaza (miguel@ximian.com)
6 * Paolo Molaro (lupus@ximian.com)
8 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
9 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
21 #include "tabledefs.h"
22 #include "mono-endian.h"
24 #include "tokentype.h"
25 #include "metadata-internals.h"
26 #include "class-internals.h"
29 static gboolean do_mono_metadata_parse_type (MonoType *type, MonoImage *m, MonoGenericContainer *container,
30 const char *ptr, const char **rptr);
32 static gboolean do_mono_metadata_type_equal (MonoType *t1, MonoType *t2, gboolean signature_only);
33 static gboolean mono_metadata_class_equal (MonoClass *c1, MonoClass *c2, gboolean signature_only);
34 static gboolean mono_metadata_fnptr_equal (MonoMethodSignature *s1, MonoMethodSignature *s2, gboolean signature_only);
35 static gboolean _mono_metadata_generic_class_equal (const MonoGenericClass *g1, const MonoGenericClass *g2,
36 gboolean signature_only);
37 static void free_generic_inst (MonoGenericInst *ginst);
38 static void free_generic_class (MonoGenericClass *ginst);
39 static void free_inflated_method (MonoMethodInflated *method);
42 * This enumeration is used to describe the data types in the metadata
53 /* Index into Blob heap */
56 /* Index into String heap */
62 /* Pointer into a table */
65 /* HasConstant:Parent pointer (Param, Field or Property) */
68 /* HasCustomAttribute index. Indexes any table except CustomAttribute */
71 /* CustomAttributeType encoded index */
74 /* HasDeclSecurity index: TypeDef Method or Assembly */
77 /* Implementation coded index: File, Export AssemblyRef */
80 /* HasFieldMarshal coded index: Field or Param table */
83 /* MemberForwardedIndex: Field or Method */
86 /* TypeDefOrRef coded index: typedef, typeref, typespec */
89 /* MemberRefParent coded index: typeref, moduleref, method, memberref, typesepc, typedef */
92 /* MethodDefOrRef coded index: Method or Member Ref table */
95 /* HasSemantic coded index: Event or Property */
98 /* ResolutionScope coded index: Module, ModuleRef, AssemblytRef, TypeRef */
102 const static unsigned char TableSchemas [] = {
103 #define ASSEMBLY_SCHEMA_OFFSET 0
104 MONO_MT_UINT32, /* "HashId" }, */
105 MONO_MT_UINT16, /* "Major" }, */
106 MONO_MT_UINT16, /* "Minor" }, */
107 MONO_MT_UINT16, /* "BuildNumber" }, */
108 MONO_MT_UINT16, /* "RevisionNumber" }, */
109 MONO_MT_UINT32, /* "Flags" }, */
110 MONO_MT_BLOB_IDX, /* "PublicKey" }, */
111 MONO_MT_STRING_IDX, /* "Name" }, */
112 MONO_MT_STRING_IDX, /* "Culture" }, */
115 #define ASSEMBLYOS_SCHEMA_OFFSET ASSEMBLY_SCHEMA_OFFSET + 10
116 MONO_MT_UINT32, /* "OSPlatformID" }, */
117 MONO_MT_UINT32, /* "OSMajor" }, */
118 MONO_MT_UINT32, /* "OSMinor" }, */
121 #define ASSEMBLYPROC_SCHEMA_OFFSET ASSEMBLYOS_SCHEMA_OFFSET + 4
122 MONO_MT_UINT32, /* "Processor" }, */
125 #define ASSEMBLYREF_SCHEMA_OFFSET ASSEMBLYPROC_SCHEMA_OFFSET + 2
126 MONO_MT_UINT16, /* "Major" }, */
127 MONO_MT_UINT16, /* "Minor" }, */
128 MONO_MT_UINT16, /* "Build" }, */
129 MONO_MT_UINT16, /* "Revision" }, */
130 MONO_MT_UINT32, /* "Flags" }, */
131 MONO_MT_BLOB_IDX, /* "PublicKeyOrToken" }, */
132 MONO_MT_STRING_IDX, /* "Name" }, */
133 MONO_MT_STRING_IDX, /* "Culture" }, */
134 MONO_MT_BLOB_IDX, /* "HashValue" }, */
137 #define ASSEMBLYREFOS_SCHEMA_OFFSET ASSEMBLYREF_SCHEMA_OFFSET + 10
138 MONO_MT_UINT32, /* "OSPlatformID" }, */
139 MONO_MT_UINT32, /* "OSMajorVersion" }, */
140 MONO_MT_UINT32, /* "OSMinorVersion" }, */
141 MONO_MT_TABLE_IDX, /* "AssemblyRef:AssemblyRef" }, */
144 #define ASSEMBLYREFPROC_SCHEMA_OFFSET ASSEMBLYREFOS_SCHEMA_OFFSET + 5
145 MONO_MT_UINT32, /* "Processor" }, */
146 MONO_MT_TABLE_IDX, /* "AssemblyRef:AssemblyRef" }, */
149 #define CLASS_LAYOUT_SCHEMA_OFFSET ASSEMBLYREFPROC_SCHEMA_OFFSET + 3
150 MONO_MT_UINT16, /* "PackingSize" }, */
151 MONO_MT_UINT32, /* "ClassSize" }, */
152 MONO_MT_TABLE_IDX, /* "Parent:TypeDef" }, */
155 #define CONSTANT_SCHEMA_OFFSET CLASS_LAYOUT_SCHEMA_OFFSET + 4
156 MONO_MT_UINT8, /* "Type" }, */
157 MONO_MT_UINT8, /* "PaddingZero" }, */
158 MONO_MT_CONST_IDX, /* "Parent" }, */
159 MONO_MT_BLOB_IDX, /* "Value" }, */
162 #define CUSTOM_ATTR_SCHEMA_OFFSET CONSTANT_SCHEMA_OFFSET + 5
163 MONO_MT_HASCAT_IDX, /* "Parent" }, */
164 MONO_MT_CAT_IDX, /* "Type" }, */
165 MONO_MT_BLOB_IDX, /* "Value" }, */
168 #define DECL_SEC_SCHEMA_OFFSET CUSTOM_ATTR_SCHEMA_OFFSET + 4
169 MONO_MT_UINT16, /* "Action" }, */
170 MONO_MT_HASDEC_IDX, /* "Parent" }, */
171 MONO_MT_BLOB_IDX, /* "PermissionSet" }, */
174 #define EVENTMAP_SCHEMA_OFFSET DECL_SEC_SCHEMA_OFFSET + 4
175 MONO_MT_TABLE_IDX, /* "Parent:TypeDef" }, */
176 MONO_MT_TABLE_IDX, /* "EventList:Event" }, */
179 #define EVENT_SCHEMA_OFFSET EVENTMAP_SCHEMA_OFFSET + 3
180 MONO_MT_UINT16, /* "EventFlags#EventAttribute" }, */
181 MONO_MT_STRING_IDX, /* "Name" }, */
182 MONO_MT_TABLE_IDX, /* "EventType" }, TypeDef or TypeRef */
185 #define EVENT_POINTER_SCHEMA_OFFSET EVENT_SCHEMA_OFFSET + 4
186 MONO_MT_TABLE_IDX, /* "Event" }, */
189 #define EXPORTED_TYPE_SCHEMA_OFFSET EVENT_POINTER_SCHEMA_OFFSET + 2
190 MONO_MT_UINT32, /* "Flags" }, */
191 MONO_MT_TABLE_IDX, /* "TypeDefId" }, */
192 MONO_MT_STRING_IDX, /* "TypeName" }, */
193 MONO_MT_STRING_IDX, /* "TypeNameSpace" }, */
194 MONO_MT_IMPL_IDX, /* "Implementation" }, */
197 #define FIELD_SCHEMA_OFFSET EXPORTED_TYPE_SCHEMA_OFFSET + 6
198 MONO_MT_UINT16, /* "Flags" }, */
199 MONO_MT_STRING_IDX, /* "Name" }, */
200 MONO_MT_BLOB_IDX, /* "Signature" }, */
203 #define FIELD_LAYOUT_SCHEMA_OFFSET FIELD_SCHEMA_OFFSET + 4
204 MONO_MT_UINT32, /* "Offset" }, */
205 MONO_MT_TABLE_IDX, /* "Field:Field" }, */
208 #define FIELD_MARSHAL_SCHEMA_OFFSET FIELD_LAYOUT_SCHEMA_OFFSET + 3
209 MONO_MT_HFM_IDX, /* "Parent" }, */
210 MONO_MT_BLOB_IDX, /* "NativeType" }, */
213 #define FIELD_RVA_SCHEMA_OFFSET FIELD_MARSHAL_SCHEMA_OFFSET + 3
214 MONO_MT_UINT32, /* "RVA" }, */
215 MONO_MT_TABLE_IDX, /* "Field:Field" }, */
218 #define FIELD_POINTER_SCHEMA_OFFSET FIELD_RVA_SCHEMA_OFFSET + 3
219 MONO_MT_TABLE_IDX, /* "Field" }, */
222 #define FILE_SCHEMA_OFFSET FIELD_POINTER_SCHEMA_OFFSET + 2
223 MONO_MT_UINT32, /* "Flags" }, */
224 MONO_MT_STRING_IDX, /* "Name" }, */
225 MONO_MT_BLOB_IDX, /* "Value" }, */
228 #define IMPLMAP_SCHEMA_OFFSET FILE_SCHEMA_OFFSET + 4
229 MONO_MT_UINT16, /* "MappingFlag" }, */
230 MONO_MT_MF_IDX, /* "MemberForwarded" }, */
231 MONO_MT_STRING_IDX, /* "ImportName" }, */
232 MONO_MT_TABLE_IDX, /* "ImportScope:ModuleRef" }, */
235 #define IFACEMAP_SCHEMA_OFFSET IMPLMAP_SCHEMA_OFFSET + 5
236 MONO_MT_TABLE_IDX, /* "Class:TypeDef" }, */
237 MONO_MT_TDOR_IDX, /* "Interface=TypeDefOrRef" }, */
240 #define MANIFEST_SCHEMA_OFFSET IFACEMAP_SCHEMA_OFFSET + 3
241 MONO_MT_UINT32, /* "Offset" }, */
242 MONO_MT_UINT32, /* "Flags" }, */
243 MONO_MT_STRING_IDX, /* "Name" }, */
244 MONO_MT_IMPL_IDX, /* "Implementation" }, */
247 #define MEMBERREF_SCHEMA_OFFSET MANIFEST_SCHEMA_OFFSET + 5
248 MONO_MT_MRP_IDX, /* "Class" }, */
249 MONO_MT_STRING_IDX, /* "Name" }, */
250 MONO_MT_BLOB_IDX, /* "Signature" }, */
253 #define METHOD_SCHEMA_OFFSET MEMBERREF_SCHEMA_OFFSET + 4
254 MONO_MT_UINT32, /* "RVA" }, */
255 MONO_MT_UINT16, /* "ImplFlags#MethodImplAttributes" }, */
256 MONO_MT_UINT16, /* "Flags#MethodAttribute" }, */
257 MONO_MT_STRING_IDX, /* "Name" }, */
258 MONO_MT_BLOB_IDX, /* "Signature" }, */
259 MONO_MT_TABLE_IDX, /* "ParamList:Param" }, */
262 #define METHOD_IMPL_SCHEMA_OFFSET METHOD_SCHEMA_OFFSET + 7
263 MONO_MT_TABLE_IDX, /* "Class:TypeDef" }, */
264 MONO_MT_MDOR_IDX, /* "MethodBody" }, */
265 MONO_MT_MDOR_IDX, /* "MethodDeclaration" }, */
268 #define METHOD_SEMA_SCHEMA_OFFSET METHOD_IMPL_SCHEMA_OFFSET + 4
269 MONO_MT_UINT16, /* "MethodSemantic" }, */
270 MONO_MT_TABLE_IDX, /* "Method:Method" }, */
271 MONO_MT_HS_IDX, /* "Association" }, */
274 #define METHOD_POINTER_SCHEMA_OFFSET METHOD_SEMA_SCHEMA_OFFSET + 4
275 MONO_MT_TABLE_IDX, /* "Method" }, */
278 #define MODULE_SCHEMA_OFFSET METHOD_POINTER_SCHEMA_OFFSET + 2
279 MONO_MT_UINT16, /* "Generation" }, */
280 MONO_MT_STRING_IDX, /* "Name" }, */
281 MONO_MT_GUID_IDX, /* "MVID" }, */
282 MONO_MT_GUID_IDX, /* "EncID" }, */
283 MONO_MT_GUID_IDX, /* "EncBaseID" }, */
286 #define MODULEREF_SCHEMA_OFFSET MODULE_SCHEMA_OFFSET + 6
287 MONO_MT_STRING_IDX, /* "Name" }, */
290 #define NESTED_CLASS_SCHEMA_OFFSET MODULEREF_SCHEMA_OFFSET + 2
291 MONO_MT_TABLE_IDX, /* "NestedClass:TypeDef" }, */
292 MONO_MT_TABLE_IDX, /* "EnclosingClass:TypeDef" }, */
295 #define PARAM_SCHEMA_OFFSET NESTED_CLASS_SCHEMA_OFFSET + 3
296 MONO_MT_UINT16, /* "Flags" }, */
297 MONO_MT_UINT16, /* "Sequence" }, */
298 MONO_MT_STRING_IDX, /* "Name" }, */
301 #define PARAM_POINTER_SCHEMA_OFFSET PARAM_SCHEMA_OFFSET + 4
302 MONO_MT_TABLE_IDX, /* "Param" }, */
305 #define PROPERTY_SCHEMA_OFFSET PARAM_POINTER_SCHEMA_OFFSET + 2
306 MONO_MT_UINT16, /* "Flags" }, */
307 MONO_MT_STRING_IDX, /* "Name" }, */
308 MONO_MT_BLOB_IDX, /* "Type" }, */
311 #define PROPERTY_POINTER_SCHEMA_OFFSET PROPERTY_SCHEMA_OFFSET + 4
312 MONO_MT_TABLE_IDX, /* "Property" }, */
315 #define PROPERTY_MAP_SCHEMA_OFFSET PROPERTY_POINTER_SCHEMA_OFFSET + 2
316 MONO_MT_TABLE_IDX, /* "Parent:TypeDef" }, */
317 MONO_MT_TABLE_IDX, /* "PropertyList:Property" }, */
320 #define STDALON_SIG_SCHEMA_OFFSET PROPERTY_MAP_SCHEMA_OFFSET + 3
321 MONO_MT_BLOB_IDX, /* "Signature" }, */
324 #define TYPEDEF_SCHEMA_OFFSET STDALON_SIG_SCHEMA_OFFSET + 2
325 MONO_MT_UINT32, /* "Flags" }, */
326 MONO_MT_STRING_IDX, /* "Name" }, */
327 MONO_MT_STRING_IDX, /* "Namespace" }, */
328 MONO_MT_TDOR_IDX, /* "Extends" }, */
329 MONO_MT_TABLE_IDX, /* "FieldList:Field" }, */
330 MONO_MT_TABLE_IDX, /* "MethodList:Method" }, */
333 #define TYPEREF_SCHEMA_OFFSET TYPEDEF_SCHEMA_OFFSET + 7
334 MONO_MT_RS_IDX, /* "ResolutionScope=ResolutionScope" }, */
335 MONO_MT_STRING_IDX, /* "Name" }, */
336 MONO_MT_STRING_IDX, /* "Namespace" }, */
339 #define TYPESPEC_SCHEMA_OFFSET TYPEREF_SCHEMA_OFFSET + 4
340 MONO_MT_BLOB_IDX, /* "Signature" }, */
343 #define GENPARAM_SCHEMA_OFFSET TYPESPEC_SCHEMA_OFFSET + 2
344 MONO_MT_UINT16, /* "Number" }, */
345 MONO_MT_UINT16, /* "Flags" }, */
346 MONO_MT_TABLE_IDX, /* "Owner" }, TypeDef or MethodDef */
347 MONO_MT_STRING_IDX, /* "Name" }, */
350 #define METHOD_SPEC_SCHEMA_OFFSET GENPARAM_SCHEMA_OFFSET + 5
351 MONO_MT_MDOR_IDX, /* "Method" }, */
352 MONO_MT_BLOB_IDX, /* "Signature" }, */
355 #define GEN_CONSTRAINT_SCHEMA_OFFSET METHOD_SPEC_SCHEMA_OFFSET + 3
356 MONO_MT_TABLE_IDX, /* "GenericParam" }, */
357 MONO_MT_TDOR_IDX, /* "Constraint" }, */
360 #define NULL_SCHEMA_OFFSET GEN_CONSTRAINT_SCHEMA_OFFSET + 3
364 /* Must be the same order as MONO_TABLE_* */
365 const static unsigned char
366 table_description [] = {
367 MODULE_SCHEMA_OFFSET,
368 TYPEREF_SCHEMA_OFFSET,
369 TYPEDEF_SCHEMA_OFFSET,
370 FIELD_POINTER_SCHEMA_OFFSET,
372 METHOD_POINTER_SCHEMA_OFFSET,
373 METHOD_SCHEMA_OFFSET,
374 PARAM_POINTER_SCHEMA_OFFSET,
376 IFACEMAP_SCHEMA_OFFSET,
377 MEMBERREF_SCHEMA_OFFSET, /* 0xa */
378 CONSTANT_SCHEMA_OFFSET,
379 CUSTOM_ATTR_SCHEMA_OFFSET,
380 FIELD_MARSHAL_SCHEMA_OFFSET,
381 DECL_SEC_SCHEMA_OFFSET,
382 CLASS_LAYOUT_SCHEMA_OFFSET,
383 FIELD_LAYOUT_SCHEMA_OFFSET, /* 0x10 */
384 STDALON_SIG_SCHEMA_OFFSET,
385 EVENTMAP_SCHEMA_OFFSET,
386 EVENT_POINTER_SCHEMA_OFFSET,
388 PROPERTY_MAP_SCHEMA_OFFSET,
389 PROPERTY_POINTER_SCHEMA_OFFSET,
390 PROPERTY_SCHEMA_OFFSET,
391 METHOD_SEMA_SCHEMA_OFFSET,
392 METHOD_IMPL_SCHEMA_OFFSET,
393 MODULEREF_SCHEMA_OFFSET, /* 0x1a */
394 TYPESPEC_SCHEMA_OFFSET,
395 IMPLMAP_SCHEMA_OFFSET,
396 FIELD_RVA_SCHEMA_OFFSET,
399 ASSEMBLY_SCHEMA_OFFSET, /* 0x20 */
400 ASSEMBLYPROC_SCHEMA_OFFSET,
401 ASSEMBLYOS_SCHEMA_OFFSET,
402 ASSEMBLYREF_SCHEMA_OFFSET,
403 ASSEMBLYREFPROC_SCHEMA_OFFSET,
404 ASSEMBLYREFOS_SCHEMA_OFFSET,
406 EXPORTED_TYPE_SCHEMA_OFFSET,
407 MANIFEST_SCHEMA_OFFSET,
408 NESTED_CLASS_SCHEMA_OFFSET,
409 GENPARAM_SCHEMA_OFFSET, /* 0x2a */
410 METHOD_SPEC_SCHEMA_OFFSET,
411 GEN_CONSTRAINT_SCHEMA_OFFSET
414 #ifdef HAVE_ARRAY_ELEM_INIT
415 #define MSGSTRFIELD(line) MSGSTRFIELD1(line)
416 #define MSGSTRFIELD1(line) str##line
417 static const struct msgstr_t {
418 #define TABLEDEF(a,b) char MSGSTRFIELD(__LINE__) [sizeof (b)];
419 #include "mono/cil/tables.def"
422 #define TABLEDEF(a,b) b,
423 #include "mono/cil/tables.def"
426 static const gint16 tableidx [] = {
427 #define TABLEDEF(a,b) [a] = offsetof (struct msgstr_t, MSGSTRFIELD(__LINE__)),
428 #include "mono/cil/tables.def"
433 #define TABLEDEF(a,b) b,
434 static const char* const
435 mono_tables_names [] = {
436 #include "mono/cil/tables.def"
442 /* Auxiliary structure used for caching inflated signatures */
444 MonoMethodSignature *sig;
445 MonoGenericContext context;
446 } MonoInflatedMethodSignature;
449 * mono_image_alloc_lock:
451 * Same as mono_image_alloc, but do the locking as well.
452 * LOCKING: Acquires the loader lock.
455 mono_image_alloc_lock (MonoImage *image, guint size)
460 res = mono_image_alloc (image, size);
461 mono_loader_unlock ();
467 * mono_image_alloc0_lock:
469 * Same as mono_image_alloc, but do the locking as well.
470 * LOCKING: Acquires the loader lock.
473 mono_image_alloc0_lock (MonoImage *image, guint size)
478 res = mono_image_alloc0 (image, size);
479 mono_loader_unlock ();
485 * mono_meta_table_name:
486 * @table: table index
488 * Returns the name of the given ECMA metadata logical format table
489 * as described in ECMA 335, Partition II, Section 22.
491 * Returns: the name for the @table index
494 mono_meta_table_name (int table)
496 if ((table < 0) || (table > MONO_TABLE_LAST))
499 #ifdef HAVE_ARRAY_ELEM_INIT
500 return (const char*)&tablestr + tableidx [table];
502 return mono_tables_names [table];
506 /* The guy who wrote the spec for this should not be allowed near a
509 If e is a coded token(see clause 23.1.7) that points into table ti out of n possible tables t0, .. tn-1,
510 then it is stored as e << (log n) & tag{ t0, .. tn-1}[ ti] using 2 bytes if the maximum number of
511 rows of tables t0, ..tn-1, is less than 2^16 - (log n), and using 4 bytes otherwise. The family of
512 finite maps tag{ t0, ..tn-1} is defined below. Note that to decode a physical row, you need the
513 inverse of this mapping.
516 #define rtsize(s,b) (((s) < (1 << (b)) ? 2 : 4))
517 #define idx_size(tableidx) (meta->tables [(tableidx)].rows < 65536 ? 2 : 4)
519 /* Reference: Partition II - 23.2.6 */
521 * mono_metadata_compute_size:
522 * @meta: metadata context
523 * @tableindex: metadata table number
524 * @result_bitfield: pointer to guint32 where to store additional info
526 * mono_metadata_compute_size() computes the lenght in bytes of a single
527 * row in a metadata table. The size of each column is encoded in the
528 * @result_bitfield return value along with the number of columns in the table.
529 * the resulting bitfield should be handed to the mono_metadata_table_size()
530 * and mono_metadata_table_count() macros.
531 * This is a Mono runtime internal only function.
534 mono_metadata_compute_size (MonoImage *meta, int tableindex, guint32 *result_bitfield)
536 guint32 bitfield = 0;
537 int size = 0, field_size = 0;
540 const unsigned char *description = TableSchemas + table_description [tableindex];
542 for (i = 0; (code = description [i]) != MONO_MT_END; i++){
545 field_size = 4; break;
548 field_size = 2; break;
551 field_size = 1; break;
553 case MONO_MT_BLOB_IDX:
554 field_size = meta->idx_blob_wide ? 4 : 2; break;
556 case MONO_MT_STRING_IDX:
557 field_size = meta->idx_string_wide ? 4 : 2; break;
559 case MONO_MT_GUID_IDX:
560 field_size = meta->idx_guid_wide ? 4 : 2; break;
562 case MONO_MT_TABLE_IDX:
563 /* Uhm, a table index can point to other tables besides the current one
564 * so, it's not correct to use the rowcount of the current table to
565 * get the size for this column - lupus
567 switch (tableindex) {
568 case MONO_TABLE_ASSEMBLYREFOS:
570 field_size = idx_size (MONO_TABLE_ASSEMBLYREF); break;
571 case MONO_TABLE_ASSEMBLYPROCESSOR:
573 field_size = idx_size (MONO_TABLE_ASSEMBLYREF); break;
574 case MONO_TABLE_CLASSLAYOUT:
576 field_size = idx_size (MONO_TABLE_TYPEDEF); break;
577 case MONO_TABLE_EVENTMAP:
578 g_assert (i == 0 || i == 1);
579 field_size = i ? idx_size (MONO_TABLE_EVENT):
580 idx_size(MONO_TABLE_TYPEDEF);
582 case MONO_TABLE_EVENT:
584 n = MAX (meta->tables [MONO_TABLE_TYPEDEF].rows, meta->tables [MONO_TABLE_TYPEREF].rows);
585 n = MAX (n, meta->tables [MONO_TABLE_TYPESPEC].rows);
586 /*This is a coded token for 3 tables, so takes 2 bits */
587 field_size = rtsize (n, 16 - MONO_TYPEDEFORREF_BITS);
589 case MONO_TABLE_EVENT_POINTER:
591 field_size = idx_size (MONO_TABLE_EVENT); break;
592 case MONO_TABLE_EXPORTEDTYPE:
594 /* the index is in another metadata file, so it must be 4 */
595 field_size = 4; break;
596 case MONO_TABLE_FIELDLAYOUT:
598 field_size = idx_size (MONO_TABLE_FIELD); break;
599 case MONO_TABLE_FIELDRVA:
601 field_size = idx_size (MONO_TABLE_FIELD); break;
602 case MONO_TABLE_FIELD_POINTER:
604 field_size = idx_size (MONO_TABLE_FIELD); break;
605 case MONO_TABLE_IMPLMAP:
607 field_size = idx_size (MONO_TABLE_MODULEREF); break;
608 case MONO_TABLE_INTERFACEIMPL:
610 field_size = idx_size (MONO_TABLE_TYPEDEF); break;
611 case MONO_TABLE_METHOD:
613 field_size = idx_size (MONO_TABLE_PARAM); break;
614 case MONO_TABLE_METHODIMPL:
616 field_size = idx_size (MONO_TABLE_TYPEDEF); break;
617 case MONO_TABLE_METHODSEMANTICS:
619 field_size = idx_size (MONO_TABLE_METHOD); break;
620 case MONO_TABLE_METHOD_POINTER:
622 field_size = idx_size (MONO_TABLE_METHOD); break;
623 case MONO_TABLE_NESTEDCLASS:
624 g_assert (i == 0 || i == 1);
625 field_size = idx_size (MONO_TABLE_TYPEDEF); break;
626 case MONO_TABLE_PARAM_POINTER:
628 field_size = idx_size (MONO_TABLE_PARAM); break;
629 case MONO_TABLE_PROPERTYMAP:
630 g_assert (i == 0 || i == 1);
631 field_size = i ? idx_size (MONO_TABLE_PROPERTY):
632 idx_size(MONO_TABLE_TYPEDEF);
634 case MONO_TABLE_PROPERTY_POINTER:
636 field_size = idx_size (MONO_TABLE_PROPERTY); break;
637 case MONO_TABLE_TYPEDEF:
638 g_assert (i == 4 || i == 5);
639 field_size = i == 4 ? idx_size (MONO_TABLE_FIELD):
640 idx_size(MONO_TABLE_METHOD);
642 case MONO_TABLE_GENERICPARAM:
643 g_assert (i == 2 || i == 4 || i == 5);
645 n = MAX (meta->tables [MONO_TABLE_METHOD].rows, meta->tables [MONO_TABLE_TYPEDEF].rows);
646 /*This is a coded token for 2 tables, so takes 1 bit */
647 field_size = rtsize (n, 16 - MONO_TYPEORMETHOD_BITS);
649 field_size = idx_size (MONO_TABLE_TYPEDEF);
651 field_size = idx_size (MONO_TABLE_TYPEDEF);
654 case MONO_TABLE_GENERICPARAMCONSTRAINT:
656 field_size = idx_size (MONO_TABLE_GENERICPARAM);
660 g_assert_not_reached ();
665 * HasConstant: ParamDef, FieldDef, Property
667 case MONO_MT_CONST_IDX:
668 n = MAX (meta->tables [MONO_TABLE_PARAM].rows,
669 meta->tables [MONO_TABLE_FIELD].rows);
670 n = MAX (n, meta->tables [MONO_TABLE_PROPERTY].rows);
672 /* 2 bits to encode tag */
673 field_size = rtsize (n, 16-2);
677 * HasCustomAttribute: points to any table but
680 case MONO_MT_HASCAT_IDX:
682 * We believe that since the signature and
683 * permission are indexing the Blob heap,
684 * we should consider the blob size first
686 /* I'm not a believer - lupus
687 if (meta->idx_blob_wide){
692 n = MAX (meta->tables [MONO_TABLE_METHOD].rows,
693 meta->tables [MONO_TABLE_FIELD].rows);
694 n = MAX (n, meta->tables [MONO_TABLE_TYPEREF].rows);
695 n = MAX (n, meta->tables [MONO_TABLE_TYPEDEF].rows);
696 n = MAX (n, meta->tables [MONO_TABLE_PARAM].rows);
697 n = MAX (n, meta->tables [MONO_TABLE_INTERFACEIMPL].rows);
698 n = MAX (n, meta->tables [MONO_TABLE_MEMBERREF].rows);
699 n = MAX (n, meta->tables [MONO_TABLE_MODULE].rows);
700 n = MAX (n, meta->tables [MONO_TABLE_DECLSECURITY].rows);
701 n = MAX (n, meta->tables [MONO_TABLE_PROPERTY].rows);
702 n = MAX (n, meta->tables [MONO_TABLE_EVENT].rows);
703 n = MAX (n, meta->tables [MONO_TABLE_STANDALONESIG].rows);
704 n = MAX (n, meta->tables [MONO_TABLE_MODULEREF].rows);
705 n = MAX (n, meta->tables [MONO_TABLE_TYPESPEC].rows);
706 n = MAX (n, meta->tables [MONO_TABLE_ASSEMBLY].rows);
707 n = MAX (n, meta->tables [MONO_TABLE_ASSEMBLYREF].rows);
708 n = MAX (n, meta->tables [MONO_TABLE_FILE].rows);
709 n = MAX (n, meta->tables [MONO_TABLE_EXPORTEDTYPE].rows);
710 n = MAX (n, meta->tables [MONO_TABLE_MANIFESTRESOURCE].rows);
712 /* 5 bits to encode */
713 field_size = rtsize (n, 16-5);
717 * CustomAttributeType: TypeDef, TypeRef, MethodDef,
718 * MemberRef and String.
720 case MONO_MT_CAT_IDX:
721 /* String is a heap, if it is wide, we know the size */
723 if (meta->idx_string_wide){
728 n = MAX (meta->tables [MONO_TABLE_TYPEREF].rows,
729 meta->tables [MONO_TABLE_TYPEDEF].rows);
730 n = MAX (n, meta->tables [MONO_TABLE_METHOD].rows);
731 n = MAX (n, meta->tables [MONO_TABLE_MEMBERREF].rows);
733 /* 3 bits to encode */
734 field_size = rtsize (n, 16-3);
738 * HasDeclSecurity: Typedef, MethodDef, Assembly
740 case MONO_MT_HASDEC_IDX:
741 n = MAX (meta->tables [MONO_TABLE_TYPEDEF].rows,
742 meta->tables [MONO_TABLE_METHOD].rows);
743 n = MAX (n, meta->tables [MONO_TABLE_ASSEMBLY].rows);
745 /* 2 bits to encode */
746 field_size = rtsize (n, 16-2);
750 * Implementation: File, AssemblyRef, ExportedType
752 case MONO_MT_IMPL_IDX:
753 n = MAX (meta->tables [MONO_TABLE_FILE].rows,
754 meta->tables [MONO_TABLE_ASSEMBLYREF].rows);
755 n = MAX (n, meta->tables [MONO_TABLE_EXPORTEDTYPE].rows);
757 /* 2 bits to encode tag */
758 field_size = rtsize (n, 16-2);
762 * HasFieldMarshall: FieldDef, ParamDef
764 case MONO_MT_HFM_IDX:
765 n = MAX (meta->tables [MONO_TABLE_FIELD].rows,
766 meta->tables [MONO_TABLE_PARAM].rows);
768 /* 1 bit used to encode tag */
769 field_size = rtsize (n, 16-1);
773 * MemberForwarded: FieldDef, MethodDef
776 n = MAX (meta->tables [MONO_TABLE_FIELD].rows,
777 meta->tables [MONO_TABLE_METHOD].rows);
779 /* 1 bit used to encode tag */
780 field_size = rtsize (n, 16-1);
784 * TypeDefOrRef: TypeDef, ParamDef, TypeSpec
786 * It is TypeDef, _TypeRef_, TypeSpec, instead.
788 case MONO_MT_TDOR_IDX:
789 n = MAX (meta->tables [MONO_TABLE_TYPEDEF].rows,
790 meta->tables [MONO_TABLE_TYPEREF].rows);
791 n = MAX (n, meta->tables [MONO_TABLE_TYPESPEC].rows);
793 /* 2 bits to encode */
794 field_size = rtsize (n, 16-2);
798 * MemberRefParent: TypeDef, TypeRef, MethodDef, ModuleRef, TypeSpec, MemberRef
800 case MONO_MT_MRP_IDX:
801 n = MAX (meta->tables [MONO_TABLE_TYPEDEF].rows,
802 meta->tables [MONO_TABLE_TYPEREF].rows);
803 n = MAX (n, meta->tables [MONO_TABLE_METHOD].rows);
804 n = MAX (n, meta->tables [MONO_TABLE_MODULEREF].rows);
805 n = MAX (n, meta->tables [MONO_TABLE_TYPESPEC].rows);
806 n = MAX (n, meta->tables [MONO_TABLE_MEMBERREF].rows);
808 /* 3 bits to encode */
809 field_size = rtsize (n, 16 - 3);
813 * MethodDefOrRef: MethodDef, MemberRef
815 case MONO_MT_MDOR_IDX:
816 n = MAX (meta->tables [MONO_TABLE_METHOD].rows,
817 meta->tables [MONO_TABLE_MEMBERREF].rows);
819 /* 1 bit used to encode tag */
820 field_size = rtsize (n, 16-1);
824 * HasSemantics: Property, Event
827 n = MAX (meta->tables [MONO_TABLE_PROPERTY].rows,
828 meta->tables [MONO_TABLE_EVENT].rows);
830 /* 1 bit used to encode tag */
831 field_size = rtsize (n, 16-1);
835 * ResolutionScope: Module, ModuleRef, AssemblyRef, TypeRef
838 n = MAX (meta->tables [MONO_TABLE_MODULE].rows,
839 meta->tables [MONO_TABLE_MODULEREF].rows);
840 n = MAX (n, meta->tables [MONO_TABLE_ASSEMBLYREF].rows);
841 n = MAX (n, meta->tables [MONO_TABLE_TYPEREF].rows);
843 /* 2 bits used to encode tag (ECMA spec claims 3) */
844 field_size = rtsize (n, 16 - 2);
849 * encode field size as follows (we just need to
856 bitfield |= (field_size-1) << shift;
859 /*g_print ("table %02x field %d size %d\n", tableindex, i, field_size);*/
862 *result_bitfield = (i << 24) | bitfield;
867 * mono_metadata_compute_table_bases:
868 * @meta: metadata context to compute table values
870 * Computes the table bases for the metadata structure.
871 * This is an internal function used by the image loader code.
874 mono_metadata_compute_table_bases (MonoImage *meta)
877 const char *base = meta->tables_base;
879 for (i = 0; i < MONO_TABLE_NUM; i++) {
880 MonoTableInfo *table = &meta->tables [i];
881 if (table->rows == 0)
884 table->row_size = mono_metadata_compute_size (meta, i, &table->size_bitfield);
886 base += table->rows * table->row_size;
891 * mono_metadata_locate:
892 * @meta: metadata context
893 * @table: table code.
894 * @idx: index of element to retrieve from @table.
896 * Returns: a pointer to the @idx element in the metadata table
897 * whose code is @table.
900 mono_metadata_locate (MonoImage *meta, int table, int idx)
902 /* idx == 0 refers always to NULL */
903 g_return_val_if_fail (idx > 0 && idx <= meta->tables [table].rows, "");
905 return meta->tables [table].base + (meta->tables [table].row_size * (idx - 1));
909 * mono_metadata_locate_token:
910 * @meta: metadata context
911 * @token: metadata token
913 * Returns: a pointer to the data in the metadata represented by the
917 mono_metadata_locate_token (MonoImage *meta, guint32 token)
919 return mono_metadata_locate (meta, token >> 24, token & 0xffffff);
923 * mono_metadata_string_heap:
924 * @meta: metadata context
925 * @index: index into the string heap.
927 * Returns: an in-memory pointer to the @index in the string heap.
930 mono_metadata_string_heap (MonoImage *meta, guint32 index)
932 g_return_val_if_fail (index < meta->heap_strings.size, "");
933 return meta->heap_strings.data + index;
937 * mono_metadata_user_string:
938 * @meta: metadata context
939 * @index: index into the user string heap.
941 * Returns: an in-memory pointer to the @index in the user string heap ("#US").
944 mono_metadata_user_string (MonoImage *meta, guint32 index)
946 g_return_val_if_fail (index < meta->heap_us.size, "");
947 return meta->heap_us.data + index;
951 * mono_metadata_blob_heap:
952 * @meta: metadata context
953 * @index: index into the blob.
955 * Returns: an in-memory pointer to the @index in the Blob heap.
958 mono_metadata_blob_heap (MonoImage *meta, guint32 index)
960 g_return_val_if_fail (index < meta->heap_blob.size, "");
961 return meta->heap_blob.data + index;
965 * mono_metadata_guid_heap:
966 * @meta: metadata context
967 * @index: index into the guid heap.
969 * Returns: an in-memory pointer to the @index in the guid heap.
972 mono_metadata_guid_heap (MonoImage *meta, guint32 index)
975 index *= 16; /* adjust for guid size and 1-based index */
976 g_return_val_if_fail (index < meta->heap_guid.size, "");
977 return meta->heap_guid.data + index;
980 static const unsigned char *
981 dword_align (const unsigned char *ptr)
983 #if SIZEOF_VOID_P == 8
984 return (const unsigned char *) (((guint64) (ptr + 3)) & ~3);
986 return (const unsigned char *) (((guint32) (ptr + 3)) & ~3);
991 * mono_metadata_decode_row:
992 * @t: table to extract information from.
993 * @idx: index in table.
994 * @res: array of @res_size cols to store the results in
996 * This decompresses the metadata element @idx in table @t
997 * into the guint32 @res array that has res_size elements
1000 mono_metadata_decode_row (const MonoTableInfo *t, int idx, guint32 *res, int res_size)
1002 guint32 bitfield = t->size_bitfield;
1003 int i, count = mono_metadata_table_count (bitfield);
1006 g_assert (idx < t->rows);
1007 data = t->base + idx * t->row_size;
1009 g_assert (res_size == count);
1011 for (i = 0; i < count; i++) {
1012 int n = mono_metadata_table_size (bitfield, i);
1016 res [i] = *data; break;
1018 res [i] = read16 (data); break;
1020 res [i] = read32 (data); break;
1022 g_assert_not_reached ();
1029 * mono_metadata_decode_row_col:
1030 * @t: table to extract information from.
1031 * @idx: index for row in table.
1032 * @col: column in the row.
1034 * This function returns the value of column @col from the @idx
1035 * row in the table @t.
1038 mono_metadata_decode_row_col (const MonoTableInfo *t, int idx, guint col)
1040 guint32 bitfield = t->size_bitfield;
1042 register const char *data;
1045 g_assert (idx < t->rows);
1046 g_assert (col < mono_metadata_table_count (bitfield));
1047 data = t->base + idx * t->row_size;
1049 n = mono_metadata_table_size (bitfield, 0);
1050 for (i = 0; i < col; ++i) {
1052 n = mono_metadata_table_size (bitfield, i + 1);
1058 return read16 (data);
1060 return read32 (data);
1062 g_assert_not_reached ();
1068 * mono_metadata_decode_blob_size:
1069 * @ptr: pointer to a blob object
1070 * @rptr: the new position of the pointer
1072 * This decodes a compressed size as described by 23.1.4 (a blob or user string object)
1074 * Returns: the size of the blob object
1077 mono_metadata_decode_blob_size (const char *xptr, const char **rptr)
1079 const unsigned char *ptr = (const unsigned char *)xptr;
1082 if ((*ptr & 0x80) == 0){
1083 size = ptr [0] & 0x7f;
1085 } else if ((*ptr & 0x40) == 0){
1086 size = ((ptr [0] & 0x3f) << 8) + ptr [1];
1089 size = ((ptr [0] & 0x1f) << 24) +
1101 * mono_metadata_decode_value:
1102 * @ptr: pointer to decode from
1103 * @rptr: the new position of the pointer
1105 * This routine decompresses 32-bit values as specified in the "Blob and
1106 * Signature" section (22.2)
1108 * Returns: the decoded value
1111 mono_metadata_decode_value (const char *_ptr, const char **rptr)
1113 const unsigned char *ptr = (const unsigned char *) _ptr;
1114 unsigned char b = *ptr;
1117 if ((b & 0x80) == 0){
1120 } else if ((b & 0x40) == 0){
1121 len = ((b & 0x3f) << 8 | ptr [1]);
1124 len = ((b & 0x1f) << 24) |
1137 * mono_metadata_decode_signed_value:
1138 * @ptr: pointer to decode from
1139 * @rptr: the new position of the pointer
1141 * This routine decompresses 32-bit signed values
1142 * (not specified in the spec)
1144 * Returns: the decoded value
1147 mono_metadata_decode_signed_value (const char *ptr, const char **rptr)
1149 guint32 uval = mono_metadata_decode_value (ptr, rptr);
1150 gint32 ival = uval >> 1;
1153 /* ival is a truncated 2's complement negative number. */
1155 /* 6 bits = 7 bits for compressed representation (top bit is '0') - 1 sign bit */
1158 /* 13 bits = 14 bits for compressed representation (top bits are '10') - 1 sign bit */
1159 return ival - 0x2000;
1160 if (ival < 0x10000000)
1161 /* 28 bits = 29 bits for compressed representation (top bits are '110') - 1 sign bit */
1162 return ival - 0x10000000;
1163 g_assert (ival < 0x20000000);
1164 g_warning ("compressed signed value appears to use 29 bits for compressed representation: %x (raw: %8x)", ival, uval);
1165 return ival - 0x20000000;
1169 * Translates the given 1-based index into the Method, Field, Event, or Param tables
1170 * using the *Ptr tables in uncompressed metadata, if they are available.
1172 * FIXME: The caller is not forced to call this function, which is error-prone, since
1173 * forgetting to call it would only show up as a bug on uncompressed metadata.
1176 mono_metadata_translate_token_index (MonoImage *image, int table, guint32 idx)
1178 if (!image->uncompressed_metadata)
1182 case MONO_TABLE_METHOD:
1183 if (image->tables [MONO_TABLE_METHOD_POINTER].rows)
1184 return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_METHOD_POINTER], idx - 1, MONO_METHOD_POINTER_METHOD);
1187 case MONO_TABLE_FIELD:
1188 if (image->tables [MONO_TABLE_FIELD_POINTER].rows)
1189 return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_FIELD_POINTER], idx - 1, MONO_FIELD_POINTER_FIELD);
1192 case MONO_TABLE_EVENT:
1193 if (image->tables [MONO_TABLE_EVENT_POINTER].rows)
1194 return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_EVENT_POINTER], idx - 1, MONO_EVENT_POINTER_EVENT);
1197 case MONO_TABLE_PROPERTY:
1198 if (image->tables [MONO_TABLE_PROPERTY_POINTER].rows)
1199 return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_PROPERTY_POINTER], idx - 1, MONO_PROPERTY_POINTER_PROPERTY);
1202 case MONO_TABLE_PARAM:
1203 if (image->tables [MONO_TABLE_PARAM_POINTER].rows)
1204 return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_PARAM_POINTER], idx - 1, MONO_PARAM_POINTER_PARAM);
1213 * mono_metadata_decode_table_row:
1215 * Same as mono_metadata_decode_row, but takes an IMAGE+TABLE ID pair, and takes
1216 * uncompressed metadata into account, so it should be used to access the
1217 * Method, Field, Param and Event tables when the access is made from metadata, i.e.
1218 * IDX is retrieved from a metadata table, like MONO_TYPEDEF_FIELD_LIST.
1221 mono_metadata_decode_table_row (MonoImage *image, int table, int idx, guint32 *res, int res_size)
1223 if (image->uncompressed_metadata)
1224 idx = mono_metadata_translate_token_index (image, table, idx + 1) - 1;
1226 mono_metadata_decode_row (&image->tables [table], idx, res, res_size);
1230 * mono_metadata_decode_table_row_col:
1232 * Same as mono_metadata_decode_row_col, but takes an IMAGE+TABLE ID pair, and takes
1233 * uncompressed metadata into account, so it should be used to access the
1234 * Method, Field, Param and Event tables.
1236 guint32 mono_metadata_decode_table_row_col (MonoImage *image, int table, int idx, guint col)
1238 if (image->uncompressed_metadata)
1239 idx = mono_metadata_translate_token_index (image, table, idx + 1) - 1;
1241 return mono_metadata_decode_row_col (&image->tables [table], idx, col);
1245 * mono_metadata_parse_typedef_or_ref:
1246 * @m: a metadata context.
1247 * @ptr: a pointer to an encoded TypedefOrRef in @m
1248 * @rptr: pointer updated to match the end of the decoded stream
1250 * Returns: a token valid in the @m metadata decoded from
1251 * the compressed representation.
1254 mono_metadata_parse_typedef_or_ref (MonoImage *m, const char *ptr, const char **rptr)
1257 token = mono_metadata_decode_value (ptr, &ptr);
1260 return mono_metadata_token_from_dor (token);
1264 * mono_metadata_parse_custom_mod:
1265 * @m: a metadata context.
1266 * @dest: storage where the info about the custom modifier is stored (may be NULL)
1267 * @ptr: a pointer to (possibly) the start of a custom modifier list
1268 * @rptr: pointer updated to match the end of the decoded stream
1270 * Checks if @ptr points to a type custom modifier compressed representation.
1272 * Returns: #TRUE if a custom modifier was found, #FALSE if not.
1275 mono_metadata_parse_custom_mod (MonoImage *m, MonoCustomMod *dest, const char *ptr, const char **rptr)
1277 MonoCustomMod local;
1278 if ((*ptr == MONO_TYPE_CMOD_OPT) || (*ptr == MONO_TYPE_CMOD_REQD)) {
1281 dest->required = *ptr == MONO_TYPE_CMOD_REQD ? 1 : 0;
1282 dest->token = mono_metadata_parse_typedef_or_ref (m, ptr + 1, rptr);
1289 * mono_metadata_parse_array_full:
1290 * @m: a metadata context.
1291 * @ptr: a pointer to an encoded array description.
1292 * @rptr: pointer updated to match the end of the decoded stream
1294 * Decodes the compressed array description found in the metadata @m at @ptr.
1296 * Returns: a #MonoArrayType structure describing the array type
1297 * and dimensions. Memory is allocated from the image mempool.
1299 * LOCKING: Acquires the loader lock
1302 mono_metadata_parse_array_full (MonoImage *m, MonoGenericContainer *container,
1303 const char *ptr, const char **rptr)
1306 MonoArrayType *array;
1309 array = mono_image_alloc0_lock (m, sizeof (MonoArrayType));
1310 etype = mono_metadata_parse_type_full (m, container, MONO_PARSE_TYPE, 0, ptr, &ptr);
1313 array->eklass = mono_class_from_mono_type (etype);
1314 array->rank = mono_metadata_decode_value (ptr, &ptr);
1316 array->numsizes = mono_metadata_decode_value (ptr, &ptr);
1317 if (array->numsizes)
1318 array->sizes = g_new0 (int, array->numsizes);
1319 for (i = 0; i < array->numsizes; ++i)
1320 array->sizes [i] = mono_metadata_decode_value (ptr, &ptr);
1322 array->numlobounds = mono_metadata_decode_value (ptr, &ptr);
1323 if (array->numlobounds)
1324 array->lobounds = g_new0 (int, array->numlobounds);
1325 for (i = 0; i < array->numlobounds; ++i)
1326 array->lobounds [i] = mono_metadata_decode_signed_value (ptr, &ptr);
1334 mono_metadata_parse_array (MonoImage *m, const char *ptr, const char **rptr)
1336 return mono_metadata_parse_array_full (m, NULL, ptr, rptr);
1340 * mono_metadata_free_array:
1341 * @array: array description
1343 * Frees the array description returned from mono_metadata_parse_array().
1346 mono_metadata_free_array (MonoArrayType *array)
1348 g_free (array->sizes);
1349 g_free (array->lobounds);
1354 * need to add common field and param attributes combinations:
1357 * public static literal
1360 * private static literal
1362 static const MonoType
1364 /* data, attrs, type, nmods, byref, pinned */
1365 {{NULL}, 0, MONO_TYPE_VOID, 0, 0, 0},
1366 {{NULL}, 0, MONO_TYPE_BOOLEAN, 0, 0, 0},
1367 {{NULL}, 0, MONO_TYPE_BOOLEAN, 0, 1, 0},
1368 {{NULL}, 0, MONO_TYPE_CHAR, 0, 0, 0},
1369 {{NULL}, 0, MONO_TYPE_CHAR, 0, 1, 0},
1370 {{NULL}, 0, MONO_TYPE_I1, 0, 0, 0},
1371 {{NULL}, 0, MONO_TYPE_I1, 0, 1, 0},
1372 {{NULL}, 0, MONO_TYPE_U1, 0, 0, 0},
1373 {{NULL}, 0, MONO_TYPE_U1, 0, 1, 0},
1374 {{NULL}, 0, MONO_TYPE_I2, 0, 0, 0},
1375 {{NULL}, 0, MONO_TYPE_I2, 0, 1, 0},
1376 {{NULL}, 0, MONO_TYPE_U2, 0, 0, 0},
1377 {{NULL}, 0, MONO_TYPE_U2, 0, 1, 0},
1378 {{NULL}, 0, MONO_TYPE_I4, 0, 0, 0},
1379 {{NULL}, 0, MONO_TYPE_I4, 0, 1, 0},
1380 {{NULL}, 0, MONO_TYPE_U4, 0, 0, 0},
1381 {{NULL}, 0, MONO_TYPE_U4, 0, 1, 0},
1382 {{NULL}, 0, MONO_TYPE_I8, 0, 0, 0},
1383 {{NULL}, 0, MONO_TYPE_I8, 0, 1, 0},
1384 {{NULL}, 0, MONO_TYPE_U8, 0, 0, 0},
1385 {{NULL}, 0, MONO_TYPE_U8, 0, 1, 0},
1386 {{NULL}, 0, MONO_TYPE_R4, 0, 0, 0},
1387 {{NULL}, 0, MONO_TYPE_R4, 0, 1, 0},
1388 {{NULL}, 0, MONO_TYPE_R8, 0, 0, 0},
1389 {{NULL}, 0, MONO_TYPE_R8, 0, 1, 0},
1390 {{NULL}, 0, MONO_TYPE_STRING, 0, 0, 0},
1391 {{NULL}, 0, MONO_TYPE_STRING, 0, 1, 0},
1392 {{NULL}, 0, MONO_TYPE_OBJECT, 0, 0, 0},
1393 {{NULL}, 0, MONO_TYPE_OBJECT, 0, 1, 0},
1394 {{NULL}, 0, MONO_TYPE_TYPEDBYREF, 0, 0, 0},
1395 {{NULL}, 0, MONO_TYPE_I, 0, 0, 0},
1396 {{NULL}, 0, MONO_TYPE_I, 0, 1, 0},
1397 {{NULL}, 0, MONO_TYPE_U, 0, 0, 0},
1398 {{NULL}, 0, MONO_TYPE_U, 0, 1, 0},
1401 #define NBUILTIN_TYPES() (sizeof (builtin_types) / sizeof (builtin_types [0]))
1403 static GHashTable *type_cache = NULL;
1404 static GHashTable *generic_inst_cache = NULL;
1405 static GHashTable *generic_class_cache = NULL;
1406 static int next_generic_inst_id = 0;
1409 * Protected by the loader lock.
1410 * It has a MonoMethodInflated* as key and value.
1411 * The key lookup will just access the declaring and context fields
1413 static GHashTable *generic_method_cache = NULL;
1416 * Protected by the loader lock.
1417 * It has a MonoInflatedMethodSignature* as key and value.
1419 static GHashTable *generic_signature_cache = NULL;
1421 static guint mono_generic_class_hash (gconstpointer data);
1424 * MonoTypes with modifies are never cached, so we never check or use that field.
1427 mono_type_hash (gconstpointer data)
1429 const MonoType *type = (const MonoType *) data;
1430 if (type->type == MONO_TYPE_GENERICINST)
1431 return mono_generic_class_hash (type->data.generic_class);
1433 return type->type | (type->byref << 8) | (type->attrs << 9);
1437 mono_type_equal (gconstpointer ka, gconstpointer kb)
1439 const MonoType *a = (const MonoType *) ka;
1440 const MonoType *b = (const MonoType *) kb;
1442 if (a->type != b->type || a->byref != b->byref || a->attrs != b->attrs || a->pinned != b->pinned)
1444 /* need other checks */
1449 mono_metadata_generic_inst_hash (gconstpointer data)
1451 const MonoGenericInst *ginst = (const MonoGenericInst *) data;
1455 for (i = 0; i < ginst->type_argc; ++i) {
1457 hash += mono_metadata_type_hash (ginst->type_argv [i]);
1460 return hash ^ (ginst->is_open << 8);
1464 mono_generic_inst_equal_full (const MonoGenericInst *a, const MonoGenericInst *b, gboolean signature_only)
1468 if (a->id && b->id) {
1471 if (!signature_only)
1475 if (a->is_open != b->is_open || a->type_argc != b->type_argc)
1477 for (i = 0; i < a->type_argc; ++i) {
1478 if (!do_mono_metadata_type_equal (a->type_argv [i], b->type_argv [i], signature_only))
1485 mono_metadata_generic_inst_equal (gconstpointer ka, gconstpointer kb)
1487 const MonoGenericInst *a = (const MonoGenericInst *) ka;
1488 const MonoGenericInst *b = (const MonoGenericInst *) kb;
1490 return mono_generic_inst_equal_full (a, b, FALSE);
1494 mono_generic_class_hash (gconstpointer data)
1496 const MonoGenericClass *gclass = (const MonoGenericClass *) data;
1497 guint hash = mono_metadata_type_hash (&gclass->container_class->byval_arg);
1500 hash += gclass->is_tb_open;
1501 hash += mono_metadata_generic_context_hash (&gclass->context);
1507 mono_generic_class_equal (gconstpointer ka, gconstpointer kb)
1509 const MonoGenericClass *a = (const MonoGenericClass *) ka;
1510 const MonoGenericClass *b = (const MonoGenericClass *) kb;
1512 return _mono_metadata_generic_class_equal (a, b, FALSE);
1516 * mono_metadata_init:
1518 * Initialize the global variables of this module.
1519 * This is a Mono runtime internal function.
1522 mono_metadata_init (void)
1526 type_cache = g_hash_table_new (mono_type_hash, mono_type_equal);
1527 generic_inst_cache = g_hash_table_new_full (mono_metadata_generic_inst_hash, mono_metadata_generic_inst_equal, NULL, (GDestroyNotify)free_generic_inst);
1528 generic_class_cache = g_hash_table_new_full (mono_generic_class_hash, mono_generic_class_equal, NULL, (GDestroyNotify)free_generic_class);
1530 for (i = 0; i < NBUILTIN_TYPES (); ++i)
1531 g_hash_table_insert (type_cache, (gpointer) &builtin_types [i], (gpointer) &builtin_types [i]);
1535 * mono_metadata_cleanup:
1537 * Free all resources used by this module.
1538 * This is a Mono runtime internal function.
1541 mono_metadata_cleanup (void)
1543 g_hash_table_destroy (type_cache);
1544 g_hash_table_destroy (generic_inst_cache);
1545 g_hash_table_destroy (generic_class_cache);
1546 if (generic_method_cache)
1547 g_hash_table_destroy (generic_method_cache);
1548 if (generic_signature_cache)
1549 g_hash_table_destroy (generic_signature_cache);
1551 generic_inst_cache = NULL;
1552 generic_class_cache = NULL;
1553 generic_method_cache = NULL;
1554 generic_signature_cache = NULL;
1558 * mono_metadata_parse_type:
1559 * @m: metadata context
1560 * @mode: king of type that may be found at @ptr
1561 * @opt_attrs: optional attributes to store in the returned type
1562 * @ptr: pointer to the type representation
1563 * @rptr: pointer updated to match the end of the decoded stream
1565 * Decode a compressed type description found at @ptr in @m.
1566 * @mode can be one of MONO_PARSE_MOD_TYPE, MONO_PARSE_PARAM, MONO_PARSE_RET,
1567 * MONO_PARSE_FIELD, MONO_PARSE_LOCAL, MONO_PARSE_TYPE.
1568 * This function can be used to decode type descriptions in method signatures,
1569 * field signatures, locals signatures etc.
1571 * To parse a generic type, `generic_container' points to the current class'es
1572 * (the `generic_container' field in the MonoClass) or the current generic method's
1573 * (the `generic_container' field in the MonoMethodNormal) generic container.
1574 * When we encounter any MONO_TYPE_VAR or MONO_TYPE_MVAR's, they're looked up in
1575 * this MonoGenericContainer.
1576 * This is a Mono runtime internal function.
1578 * LOCKING: Acquires the loader lock.
1580 * Returns: a #MonoType structure representing the decoded type.
1583 mono_metadata_parse_type_full (MonoImage *m, MonoGenericContainer *container, MonoParseTypeMode mode,
1584 short opt_attrs, const char *ptr, const char **rptr)
1586 MonoType *type, *cached;
1588 gboolean byref = FALSE;
1589 gboolean pinned = FALSE;
1590 const char *tmp_ptr;
1595 * According to the spec, custom modifiers should come before the byref
1596 * flag, but the IL produced by ilasm from the following signature:
1597 * object modopt(...) &
1598 * starts with a byref flag, followed by the modifiers. (bug #49802)
1599 * Also, this type seems to be different from 'object & modopt(...)'. Maybe
1600 * it would be better to treat byref as real type constructor instead of
1602 * Also, pinned should come before anything else, but some MSV++ produced
1603 * assemblies violate this (#bug 61990).
1606 /* Count the modifiers first */
1611 case MONO_TYPE_PINNED:
1612 case MONO_TYPE_BYREF:
1615 case MONO_TYPE_CMOD_REQD:
1616 case MONO_TYPE_CMOD_OPT:
1618 mono_metadata_parse_custom_mod (m, NULL, tmp_ptr, &tmp_ptr);
1626 type = mono_image_alloc0_lock (m, sizeof (MonoType) + ((gint32)count - MONO_ZERO_LEN_ARRAY) * sizeof (MonoCustomMod));
1627 type->num_mods = count;
1629 g_warning ("got more than 64 modifiers in type");
1632 memset (type, 0, sizeof (MonoType));
1635 /* Parse pinned, byref and custom modifiers */
1640 case MONO_TYPE_PINNED:
1644 case MONO_TYPE_BYREF:
1648 case MONO_TYPE_CMOD_REQD:
1649 case MONO_TYPE_CMOD_OPT:
1650 mono_metadata_parse_custom_mod (m, &(type->modifiers [count]), ptr, &ptr);
1658 type->attrs = opt_attrs;
1659 type->byref = byref;
1660 type->pinned = pinned ? 1 : 0;
1662 if (!do_mono_metadata_parse_type (type, m, container, ptr, &ptr)) {
1669 if (!type->num_mods) {
1670 /* no need to free type here, because it is on the stack */
1671 if ((type->type == MONO_TYPE_CLASS || type->type == MONO_TYPE_VALUETYPE) && !type->pinned && !type->attrs) {
1672 MonoType *ret = type->byref ? &type->data.klass->this_arg : &type->data.klass->byval_arg;
1674 /* Consider the case:
1676 class Foo<T> { class Bar {} }
1677 class Test : Foo<Test>.Bar {}
1679 When Foo<Test> is being expanded, 'Test' isn't yet initialized. It's actually in
1680 a really pristine state: it doesn't even know whether 'Test' is a reference or a value type.
1682 We ensure that the MonoClass is in a state that we can canonicalize to:
1684 klass->byval_arg.data.klass == klass
1685 klass->this_arg.data.klass == klass
1687 If we can't canonicalize 'type', it doesn't matter, since later users of 'type' will do it.
1689 LOCKING: even though we don't explicitly hold a lock, in the problematic case 'ret' is a field
1690 of a MonoClass which currently holds the loader lock. 'type' is local.
1692 if (ret->data.klass == type->data.klass) {
1696 /* No need to use locking since nobody is modifying the hash table */
1697 if ((cached = g_hash_table_lookup (type_cache, type))) {
1702 /* printf ("%x %x %c %s\n", type->attrs, type->num_mods, type->pinned ? 'p' : ' ', mono_type_full_name (type)); */
1704 if (type == &stype) {
1705 type = mono_image_alloc_lock (m, sizeof (MonoType));
1706 memcpy (type, &stype, sizeof (MonoType));
1712 * LOCKING: Acquires the loader lock.
1715 mono_metadata_parse_type (MonoImage *m, MonoParseTypeMode mode, short opt_attrs,
1716 const char *ptr, const char **rptr)
1718 return mono_metadata_parse_type_full (m, NULL, mode, opt_attrs, ptr, rptr);
1722 * mono_metadata_get_param_attrs:
1724 * Return the parameter attributes for the method whose MethodDef index is DEF. The
1725 * returned memory needs to be freed by the caller. If all the param attributes are
1726 * 0, then NULL is returned.
1729 mono_metadata_get_param_attrs (MonoImage *m, int def)
1731 MonoTableInfo *paramt = &m->tables [MONO_TABLE_PARAM];
1732 MonoTableInfo *methodt = &m->tables [MONO_TABLE_METHOD];
1733 guint32 cols [MONO_PARAM_SIZE];
1734 guint lastp, i, param_index = mono_metadata_decode_row_col (&m->tables [MONO_TABLE_METHOD], def - 1, MONO_METHOD_PARAMLIST);
1737 if (def < methodt->rows)
1738 lastp = mono_metadata_decode_row_col (&m->tables [MONO_TABLE_METHOD], def, MONO_METHOD_PARAMLIST);
1740 lastp = paramt->rows + 1;
1742 for (i = param_index; i < lastp; ++i) {
1743 mono_metadata_decode_row (&m->tables [MONO_TABLE_PARAM], i - 1, cols, MONO_PARAM_SIZE);
1744 if (cols [MONO_PARAM_FLAGS]) {
1746 pattrs = g_new0 (int, 1 + (lastp - param_index));
1747 pattrs [cols [MONO_PARAM_SEQUENCE]] = cols [MONO_PARAM_FLAGS];
1755 * mono_metadata_parse_signature_full:
1756 * @image: metadata context
1757 * @generic_container: generic container
1758 * @toke: metadata token
1760 * Decode a method signature stored in the STANDALONESIG table
1762 * LOCKING: Assumes the loader lock is held.
1764 * Returns: a MonoMethodSignature describing the signature.
1766 MonoMethodSignature*
1767 mono_metadata_parse_signature_full (MonoImage *image, MonoGenericContainer *generic_container, guint32 token)
1769 MonoTableInfo *tables = image->tables;
1770 guint32 idx = mono_metadata_token_index (token);
1775 return mono_lookup_dynamic_token (image, token, NULL);
1777 g_assert (mono_metadata_token_table(token) == MONO_TABLE_STANDALONESIG);
1779 sig = mono_metadata_decode_row_col (&tables [MONO_TABLE_STANDALONESIG], idx - 1, 0);
1781 ptr = mono_metadata_blob_heap (image, sig);
1782 mono_metadata_decode_blob_size (ptr, &ptr);
1784 return mono_metadata_parse_method_signature_full (image, generic_container, 0, ptr, NULL);
1788 * mono_metadata_parse_signature:
1789 * @image: metadata context
1790 * @toke: metadata token
1792 * Decode a method signature stored in the STANDALONESIG table
1794 * Returns: a MonoMethodSignature describing the signature.
1796 MonoMethodSignature*
1797 mono_metadata_parse_signature (MonoImage *image, guint32 token)
1799 return mono_metadata_parse_signature_full (image, NULL, token);
1803 * mono_metadata_signature_alloc:
1804 * @image: metadata context
1805 * @nparmas: number of parameters in the signature
1807 * Allocate a MonoMethodSignature structure with the specified number of params.
1808 * The return type and the params types need to be filled later.
1809 * This is a Mono runtime internal function.
1811 * LOCKING: Assumes the loader lock is held.
1813 * Returns: the new MonoMethodSignature structure.
1815 MonoMethodSignature*
1816 mono_metadata_signature_alloc (MonoImage *m, guint32 nparams)
1818 MonoMethodSignature *sig;
1820 sig = mono_image_alloc0_lock (m, sizeof (MonoMethodSignature) + ((gint32)nparams - MONO_ZERO_LEN_ARRAY) * sizeof (MonoType*));
1821 sig->param_count = nparams;
1822 sig->sentinelpos = -1;
1827 MonoMethodSignature*
1828 mono_metadata_signature_dup_full (MonoMemPool *mp, MonoMethodSignature *sig)
1832 sigsize = sizeof (MonoMethodSignature) + (sig->param_count - MONO_ZERO_LEN_ARRAY) * sizeof (MonoType *);
1835 MonoMethodSignature *ret;
1836 mono_loader_lock ();
1837 ret = mono_mempool_alloc (mp, sigsize);
1838 mono_loader_unlock ();
1840 memcpy (ret, sig, sigsize);
1843 return g_memdup (sig, sigsize);
1848 * mono_metadata_signature_dup:
1849 * @sig: method signature
1851 * Duplicate an existing MonoMethodSignature so it can be modified.
1852 * This is a Mono runtime internal function.
1854 * Returns: the new MonoMethodSignature structure.
1856 MonoMethodSignature*
1857 mono_metadata_signature_dup (MonoMethodSignature *sig)
1859 return mono_metadata_signature_dup_full (NULL, sig);
1863 * mono_metadata_signature_size:
1865 * Return the amount of memory allocated to SIG.
1868 mono_metadata_signature_size (MonoMethodSignature *sig)
1870 return sizeof (MonoMethodSignature) + (sig->param_count - MONO_ZERO_LEN_ARRAY) * sizeof (MonoType *);
1874 * mono_metadata_parse_method_signature:
1875 * @m: metadata context
1876 * @generic_container: generics container
1877 * @def: the MethodDef index or 0 for Ref signatures.
1878 * @ptr: pointer to the signature metadata representation
1879 * @rptr: pointer updated to match the end of the decoded stream
1881 * Decode a method signature stored at @ptr.
1882 * This is a Mono runtime internal function.
1884 * LOCKING: Assumes the loader lock is held.
1886 * Returns: a MonoMethodSignature describing the signature.
1888 MonoMethodSignature *
1889 mono_metadata_parse_method_signature_full (MonoImage *m, MonoGenericContainer *container,
1890 int def, const char *ptr, const char **rptr)
1892 MonoMethodSignature *method;
1893 int i, *pattrs = NULL;
1894 guint32 hasthis = 0, explicit_this = 0, call_convention, param_count;
1895 guint32 gen_param_count = 0;
1896 gboolean is_open = FALSE;
1899 gen_param_count = 1;
1904 call_convention = *ptr & 0x0F;
1906 if (gen_param_count)
1907 gen_param_count = mono_metadata_decode_value (ptr, &ptr);
1908 param_count = mono_metadata_decode_value (ptr, &ptr);
1911 pattrs = mono_metadata_get_param_attrs (m, def);
1912 method = mono_metadata_signature_alloc (m, param_count);
1913 method->hasthis = hasthis;
1914 method->explicit_this = explicit_this;
1915 method->call_convention = call_convention;
1916 method->generic_param_count = gen_param_count;
1918 if (call_convention != 0xa) {
1919 method->ret = mono_metadata_parse_type_full (m, container, MONO_PARSE_RET, pattrs ? pattrs [0] : 0, ptr, &ptr);
1921 mono_metadata_free_method_signature (method);
1925 is_open = mono_class_is_open_constructed_type (method->ret);
1928 for (i = 0; i < method->param_count; ++i) {
1929 if (*ptr == MONO_TYPE_SENTINEL) {
1930 if (method->call_convention != MONO_CALL_VARARG || def)
1931 g_error ("found sentinel for methoddef or no vararg method");
1932 if (method->sentinelpos >= 0)
1933 g_error ("found sentinel twice in the same signature");
1934 method->sentinelpos = i;
1937 method->params [i] = mono_metadata_parse_type_full (m, container, MONO_PARSE_PARAM, pattrs ? pattrs [i+1] : 0, ptr, &ptr);
1938 if (!method->params [i]) {
1939 mono_metadata_free_method_signature (method);
1944 is_open = mono_class_is_open_constructed_type (method->params [i]);
1947 /* The sentinel could be missing if the caller does not pass any additional arguments */
1948 if (!def && method->call_convention == MONO_CALL_VARARG && method->sentinelpos < 0)
1949 method->sentinelpos = method->param_count;
1951 method->has_type_parameters = is_open;
1953 if (def && (method->call_convention == MONO_CALL_VARARG))
1954 method->sentinelpos = method->param_count;
1961 * Add signature to a cache and increase ref count...
1968 * mono_metadata_parse_method_signature:
1969 * @m: metadata context
1970 * @def: the MethodDef index or 0 for Ref signatures.
1971 * @ptr: pointer to the signature metadata representation
1972 * @rptr: pointer updated to match the end of the decoded stream
1974 * Decode a method signature stored at @ptr.
1975 * This is a Mono runtime internal function.
1977 * LOCKING: Assumes the loader lock is held.
1979 * Returns: a MonoMethodSignature describing the signature.
1981 MonoMethodSignature *
1982 mono_metadata_parse_method_signature (MonoImage *m, int def, const char *ptr, const char **rptr)
1984 return mono_metadata_parse_method_signature_full (m, NULL, def, ptr, rptr);
1988 * mono_metadata_free_method_signature:
1989 * @sig: signature to destroy
1991 * Free the memory allocated in the signature @sig.
1992 * This method needs to be robust and work also on partially-built
1993 * signatures, so it does extra checks.
1996 mono_metadata_free_method_signature (MonoMethodSignature *sig)
1998 /* Everything is allocated from mempools */
2002 mono_metadata_free_type (sig->ret);
2003 for (i = 0; i < sig->param_count; ++i) {
2004 if (sig->params [i])
2005 mono_metadata_free_type (sig->params [i]);
2011 mono_metadata_free_inflated_signature (MonoMethodSignature *sig)
2015 /* Allocated in inflate_generic_signature () */
2017 mono_metadata_free_type (sig->ret);
2018 for (i = 0; i < sig->param_count; ++i) {
2019 if (sig->params [i])
2020 mono_metadata_free_type (sig->params [i]);
2026 inflated_method_equal (gconstpointer a, gconstpointer b)
2028 const MonoMethodInflated *ma = a;
2029 const MonoMethodInflated *mb = b;
2030 if (ma->declaring != mb->declaring)
2032 if (ma->method.method.is_mb_open != mb->method.method.is_mb_open)
2034 return mono_metadata_generic_context_equal (&ma->context, &mb->context);
2038 inflated_method_hash (gconstpointer a)
2040 const MonoMethodInflated *ma = a;
2041 return (mono_metadata_generic_context_hash (&ma->context) ^ mono_aligned_addr_hash (ma->declaring)) + ma->method.method.is_mb_open;
2045 inflated_signature_equal (gconstpointer a, gconstpointer b)
2047 const MonoInflatedMethodSignature *sig1 = a;
2048 const MonoInflatedMethodSignature *sig2 = b;
2050 /* sig->sig is assumed to be canonized */
2051 if (sig1->sig != sig2->sig)
2053 /* The generic instances are canonized */
2054 return mono_metadata_generic_context_equal (&sig1->context, &sig2->context);
2058 inflated_signature_hash (gconstpointer a)
2060 const MonoInflatedMethodSignature *sig = a;
2062 /* sig->sig is assumed to be canonized */
2063 return mono_metadata_generic_context_hash (&sig->context) ^ mono_aligned_addr_hash (sig->sig);
2067 dump_ginst (MonoGenericInst *ginst)
2072 g_print ("Ginst: <");
2073 for (i = 0; i < ginst->type_argc; ++i) {
2076 name = mono_type_get_name (ginst->type_argv [i]);
2077 g_print ("%s", name);
2083 static gboolean type_in_image (MonoType *type, MonoImage *image);
2086 signature_in_image (MonoMethodSignature *sig, MonoImage *image)
2088 gpointer iter = NULL;
2091 while ((p = mono_signature_get_params (sig, &iter)) != NULL)
2092 if (type_in_image (p, image))
2095 return type_in_image (mono_signature_get_return_type (sig), image);
2099 ginst_in_image (MonoGenericInst *ginst, MonoImage *image)
2103 for (i = 0; i < ginst->type_argc; ++i) {
2104 if (type_in_image (ginst->type_argv [i], image))
2112 gclass_in_image (MonoGenericClass *gclass, MonoImage *image)
2114 return gclass->container_class->image == image ||
2115 ginst_in_image (gclass->context.class_inst, image);
2119 type_in_image (MonoType *type, MonoImage *image)
2122 switch (type->type) {
2123 case MONO_TYPE_GENERICINST:
2124 return gclass_in_image (type->data.generic_class, image);
2126 type = type->data.type;
2128 case MONO_TYPE_SZARRAY:
2129 type = &type->data.klass->byval_arg;
2131 case MONO_TYPE_ARRAY:
2132 type = &type->data.array->eklass->byval_arg;
2134 case MONO_TYPE_FNPTR:
2135 return signature_in_image (type->data.method, image);
2137 if (type->data.generic_param->owner) {
2138 g_assert (!type->data.generic_param->owner->is_method);
2140 * FIXME: The following check is here solely
2141 * for monodis, which uses the internal
2143 * mono_metadata_load_generic_params(). The
2144 * caller of that function needs to fill in
2145 * owner->klass or owner->method of the
2146 * returned struct, but monodis doesn't do
2147 * that. The image unloading depends on that,
2148 * however, so a crash results without this
2151 if (!type->data.generic_param->owner->owner.klass)
2153 return type->data.generic_param->owner->owner.klass->image == image;
2155 return type->data.generic_param->image == image;
2157 case MONO_TYPE_MVAR:
2158 if (type->data.generic_param->owner) {
2159 g_assert (type->data.generic_param->owner->is_method);
2160 if (!type->data.generic_param->owner->owner.method)
2161 /* RefEmit created generic param whose method is not finished */
2163 return type->data.generic_param->owner->owner.method->klass->image == image;
2165 return type->data.generic_param->image == image;
2168 /* At this point, we should've avoided all potential allocations in mono_class_from_mono_type () */
2169 return image == mono_class_from_mono_type (type)->image;
2176 } CleanForImageUserData;
2179 steal_gclass_in_image (gpointer key, gpointer value, gpointer data)
2181 MonoGenericClass *gclass = key;
2182 CleanForImageUserData *user_data = data;
2184 if (!gclass_in_image (gclass, user_data->image))
2187 user_data->list = g_slist_prepend (user_data->list, gclass);
2192 steal_ginst_in_image (gpointer key, gpointer value, gpointer data)
2194 MonoGenericInst *ginst = key;
2195 CleanForImageUserData *user_data = data;
2197 if (!ginst_in_image (ginst, user_data->image))
2200 user_data->list = g_slist_prepend (user_data->list, ginst);
2205 inflated_method_in_image (gpointer key, gpointer value, gpointer data)
2207 MonoImage *image = data;
2208 MonoMethodInflated *method = key;
2211 // https://bugzilla.novell.com/show_bug.cgi?id=458168
2212 return method->declaring->klass->image == image ||
2213 (method->context.class_inst && ginst_in_image (method->context.class_inst, image)) ||
2214 (method->context.method_inst && ginst_in_image (method->context.method_inst, image)) || (((MonoMethod*)method)->signature && signature_in_image (mono_method_signature ((MonoMethod*)method), image));
2218 inflated_signature_in_image (gpointer key, gpointer value, gpointer data)
2220 MonoImage *image = data;
2221 MonoInflatedMethodSignature *sig = key;
2223 return signature_in_image (sig->sig, image) ||
2224 (sig->context.class_inst && ginst_in_image (sig->context.class_inst, image)) ||
2225 (sig->context.method_inst && ginst_in_image (sig->context.method_inst, image));
2229 mono_metadata_clean_for_image (MonoImage *image)
2231 CleanForImageUserData ginst_data, gclass_data;
2234 /* The data structures could reference each other so we delete them in two phases */
2235 ginst_data.image = gclass_data.image = image;
2236 ginst_data.list = gclass_data.list = NULL;
2238 mono_loader_lock ();
2239 /* Collect the items to delete and remove them from the hash table */
2240 g_hash_table_foreach_steal (generic_inst_cache, steal_ginst_in_image, &ginst_data);
2241 g_hash_table_foreach_steal (generic_class_cache, steal_gclass_in_image, &gclass_data);
2242 if (generic_method_cache)
2243 g_hash_table_foreach_remove (generic_method_cache, inflated_method_in_image, image);
2244 if (generic_signature_cache)
2245 g_hash_table_foreach_remove (generic_signature_cache, inflated_signature_in_image, image);
2246 /* Delete the removed items */
2247 for (l = ginst_data.list; l; l = l->next)
2248 free_generic_inst (l->data);
2249 for (l = gclass_data.list; l; l = l->next)
2250 free_generic_class (l->data);
2251 g_slist_free (ginst_data.list);
2252 g_slist_free (gclass_data.list);
2253 mono_class_unregister_image_generic_subclasses (image);
2254 mono_loader_unlock ();
2258 free_inflated_method (MonoMethodInflated *imethod)
2261 MonoMethod *method = (MonoMethod*)imethod;
2263 if (method->signature)
2264 mono_metadata_free_inflated_signature (method->signature);
2266 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))) {
2267 MonoMethodNormal* mn = (MonoMethodNormal*) method;
2268 MonoMethodHeader *header = mn->header;
2271 /* Allocated in inflate_generic_header () */
2272 for (i = 0; i < header->num_locals; ++i)
2273 mono_metadata_free_type (header->locals [i]);
2274 g_free (header->clauses);
2283 free_generic_inst (MonoGenericInst *ginst)
2287 for (i = 0; i < ginst->type_argc; ++i)
2288 mono_metadata_free_type (ginst->type_argv [i]);
2294 free_generic_class (MonoGenericClass *gclass)
2298 /* FIXME: The dynamic case */
2299 if (gclass->cached_class && !gclass->cached_class->image->dynamic && !mono_generic_class_is_generic_type_definition (gclass)) {
2300 MonoClass *class = gclass->cached_class;
2302 /* Allocated in mono_class_init () */
2303 g_free (class->methods);
2305 g_free (class->ext->properties);
2306 /* Allocated in mono_generic_class_get_class () */
2307 g_free (class->interfaces);
2309 } else if (gclass->is_dynamic) {
2310 MonoDynamicGenericClass *dgclass = (MonoDynamicGenericClass *)gclass;
2312 for (i = 0; i < dgclass->count_fields; ++i) {
2313 MonoClassField *field = dgclass->fields + i;
2314 mono_metadata_free_type (field->type);
2315 g_free ((char*)field->name);
2317 for (i = 0; i < dgclass->count_properties; ++i) {
2318 MonoProperty *property = dgclass->properties + i;
2319 g_free ((char*)property->name);
2321 for (i = 0; i < dgclass->count_events; ++i) {
2322 MonoEvent *event = dgclass->events + i;
2323 g_free ((char*)event->name);
2326 g_free (dgclass->methods);
2327 g_free (dgclass->ctors);
2328 g_free (dgclass->fields);
2329 g_free (dgclass->properties);
2330 g_free (dgclass->events);
2331 g_free (dgclass->field_objects);
2332 g_free (dgclass->field_generic_types);
2333 if (!mono_generic_class_is_generic_type_definition (gclass))
2334 g_free (gclass->cached_class);
2340 free_inflated_signature (MonoInflatedMethodSignature *sig)
2342 mono_metadata_free_inflated_signature (sig->sig);
2347 * LOCKING: assumes the loader lock is held.
2350 mono_method_inflated_lookup (MonoMethodInflated* method, gboolean cache)
2353 if (!generic_method_cache)
2354 generic_method_cache = g_hash_table_new_full (inflated_method_hash, inflated_method_equal, NULL, (GDestroyNotify)free_inflated_method);
2355 g_hash_table_insert (generic_method_cache, method, method);
2358 if (generic_method_cache)
2359 return g_hash_table_lookup (generic_method_cache, method);
2365 * mono_metadata_get_inflated_signature:
2367 * Given an inflated signature and a generic context, return a canonical copy of the
2368 * signature. The returned signature might be equal to SIG or it might be a cached copy.
2370 MonoMethodSignature *
2371 mono_metadata_get_inflated_signature (MonoMethodSignature *sig, MonoGenericContext *context)
2373 MonoInflatedMethodSignature helper;
2374 MonoInflatedMethodSignature *res;
2376 mono_loader_lock ();
2377 if (!generic_signature_cache)
2378 generic_signature_cache = g_hash_table_new_full (inflated_signature_hash, inflated_signature_equal, NULL, (GDestroyNotify)free_inflated_signature);
2381 helper.context.class_inst = context->class_inst;
2382 helper.context.method_inst = context->method_inst;
2383 res = g_hash_table_lookup (generic_signature_cache, &helper);
2385 res = g_new0 (MonoInflatedMethodSignature, 1);
2387 res->context.class_inst = context->class_inst;
2388 res->context.method_inst = context->method_inst;
2389 g_hash_table_insert (generic_signature_cache, res, res);
2392 mono_loader_unlock ();
2397 * mono_metadata_get_generic_inst:
2399 * Given a list of types, return a MonoGenericInst that represents that list.
2400 * The returned MonoGenericInst has its own copy of the list of types. The list
2401 * passed in the argument can be freed, modified or disposed of.
2405 mono_metadata_get_generic_inst (int type_argc, MonoType **type_argv)
2407 MonoGenericInst *ginst;
2410 int size = sizeof (MonoGenericInst) + (type_argc - MONO_ZERO_LEN_ARRAY) * sizeof (MonoType *);
2412 for (i = 0; i < type_argc; ++i)
2413 if (mono_class_is_open_constructed_type (type_argv [i]))
2415 is_open = (i < type_argc);
2417 ginst = alloca (size);
2419 ginst->is_open = is_open;
2420 ginst->type_argc = type_argc;
2421 memcpy (ginst->type_argv, type_argv, type_argc * sizeof (MonoType *));
2423 mono_loader_lock ();
2425 ginst = g_hash_table_lookup (generic_inst_cache, ginst);
2427 ginst = g_malloc (size);
2428 ginst->id = ++next_generic_inst_id;
2429 ginst->is_open = is_open;
2430 ginst->type_argc = type_argc;
2432 for (i = 0; i < type_argc; ++i)
2433 ginst->type_argv [i] = mono_metadata_type_dup (NULL, type_argv [i]);
2435 g_hash_table_insert (generic_inst_cache, ginst, ginst);
2438 mono_loader_unlock ();
2443 mono_metadata_is_type_builder_generic_type_definition (MonoClass *container_class, MonoGenericInst *inst, gboolean is_dynamic)
2445 MonoGenericContainer *container = container_class->generic_container;
2447 if (!is_dynamic || container_class->wastypebuilder || container->type_argc != inst->type_argc)
2449 return inst == container->context.class_inst;
2453 * mono_metadata_lookup_generic_class:
2455 * Returns a MonoGenericClass with the given properties.
2459 mono_metadata_lookup_generic_class (MonoClass *container_class, MonoGenericInst *inst, gboolean is_dynamic)
2461 MonoGenericClass *gclass;
2462 MonoGenericClass helper;
2463 gboolean is_tb_open = mono_metadata_is_type_builder_generic_type_definition (container_class, inst, is_dynamic);
2465 helper.container_class = container_class;
2466 helper.context.class_inst = inst;
2467 helper.context.method_inst = NULL;
2468 helper.is_dynamic = is_dynamic; /* We use this in a hash lookup, which does not attempt to downcast the pointer */
2469 helper.is_tb_open = is_tb_open;
2470 helper.cached_class = NULL;
2472 mono_loader_lock ();
2474 gclass = g_hash_table_lookup (generic_class_cache, &helper);
2476 /* A tripwire just to keep us honest */
2477 g_assert (!helper.cached_class);
2480 mono_loader_unlock ();
2485 MonoDynamicGenericClass *dgclass = g_new0 (MonoDynamicGenericClass, 1);
2486 gclass = &dgclass->generic_class;
2487 gclass->is_dynamic = 1;
2489 gclass = g_new0 (MonoGenericClass, 1);
2492 gclass->is_tb_open = is_tb_open;
2493 gclass->container_class = container_class;
2494 gclass->context.class_inst = inst;
2495 gclass->context.method_inst = NULL;
2496 if (inst == container_class->generic_container->context.class_inst && !is_tb_open)
2497 gclass->cached_class = container_class;
2499 g_hash_table_insert (generic_class_cache, gclass, gclass);
2501 mono_loader_unlock ();
2507 * mono_metadata_inflate_generic_inst:
2509 * Instantiate the generic instance @ginst with the context @context.
2513 mono_metadata_inflate_generic_inst (MonoGenericInst *ginst, MonoGenericContext *context)
2515 MonoType **type_argv;
2516 MonoGenericInst *nginst;
2519 if (!ginst->is_open)
2522 type_argv = g_new0 (MonoType*, ginst->type_argc);
2524 for (i = 0; i < ginst->type_argc; i++)
2525 type_argv [i] = mono_class_inflate_generic_type (ginst->type_argv [i], context);
2527 nginst = mono_metadata_get_generic_inst (ginst->type_argc, type_argv);
2529 for (i = 0; i < ginst->type_argc; i++)
2530 mono_metadata_free_type (type_argv [i]);
2537 mono_metadata_parse_generic_inst (MonoImage *m, MonoGenericContainer *container,
2538 int count, const char *ptr, const char **rptr)
2540 MonoType **type_argv;
2541 MonoGenericInst *ginst;
2544 type_argv = g_new0 (MonoType*, count);
2546 for (i = 0; i < count; i++) {
2547 MonoType *t = mono_metadata_parse_type_full (m, container, MONO_PARSE_TYPE, 0, ptr, &ptr);
2558 ginst = mono_metadata_get_generic_inst (count, type_argv);
2566 do_mono_metadata_parse_generic_class (MonoType *type, MonoImage *m, MonoGenericContainer *container,
2567 const char *ptr, const char **rptr)
2569 MonoGenericInst *inst;
2574 gtype = mono_metadata_parse_type (m, MONO_PARSE_TYPE, 0, ptr, &ptr);
2578 gklass = mono_class_from_mono_type (gtype);
2579 if (!gklass->generic_container)
2582 count = mono_metadata_decode_value (ptr, &ptr);
2583 inst = mono_metadata_parse_generic_inst (m, container, count, ptr, &ptr);
2590 type->data.generic_class = mono_metadata_lookup_generic_class (gklass, inst, FALSE);
2596 * @gc: The generic container to normalize
2597 * @type: The kind of generic parameters the resulting generic-container should contain
2600 static MonoGenericContainer *
2601 select_container (MonoGenericContainer *gc, MonoTypeEnum type)
2603 gboolean is_var = (type == MONO_TYPE_VAR);
2607 g_assert (is_var || type == MONO_TYPE_MVAR);
2610 if (gc->is_method || gc->parent)
2612 * The current MonoGenericContainer is a generic method -> its `parent'
2613 * points to the containing class'es container.
2622 * mono_metadata_parse_generic_param:
2623 * @generic_container: Our MonoClass's or MonoMethodNormal's MonoGenericContainer;
2624 * see mono_metadata_parse_type_full() for details.
2625 * Internal routine to parse a generic type parameter.
2626 * LOCKING: Acquires the loader lock
2628 static MonoGenericParam *
2629 mono_metadata_parse_generic_param (MonoImage *m, MonoGenericContainer *generic_container,
2630 MonoTypeEnum type, const char *ptr, const char **rptr)
2632 int index = mono_metadata_decode_value (ptr, &ptr);
2636 generic_container = select_container (generic_container, type);
2637 if (!generic_container) {
2638 /* Create dummy MonoGenericParam */
2639 MonoGenericParam *param;
2641 param = mono_image_alloc0_lock (m, sizeof (MonoGenericParam));
2642 param->name = mono_image_alloc0_lock (m, 8);
2643 sprintf ((char*)param->name, "%d", index);
2650 g_assert (index < generic_container->type_argc);
2651 return &generic_container->type_params [index];
2655 * mono_metadata_get_shared_type:
2657 * Return a shared instance of TYPE, if available, NULL otherwise.
2658 * Shared MonoType instances help save memory. Their contents should not be modified
2659 * by the caller. They do not need to be freed as their lifetime is bound by either
2660 * the lifetime of the runtime (builtin types), or the lifetime of the MonoClass
2661 * instance they are embedded in. If they are freed, they should be freed using
2662 * mono_metadata_free_type () instead of g_free ().
2665 mono_metadata_get_shared_type (MonoType *type)
2669 /* No need to use locking since nobody is modifying the hash table */
2670 if ((cached = g_hash_table_lookup (type_cache, type)))
2673 switch (type->type){
2674 case MONO_TYPE_CLASS:
2675 case MONO_TYPE_VALUETYPE:
2676 if (type == &type->data.klass->byval_arg)
2678 if (type == &type->data.klass->this_arg)
2687 * do_mono_metadata_parse_type:
2688 * @type: MonoType to be filled in with the return value
2690 * @generic_context: generics_context
2691 * @ptr: pointer to the encoded type
2692 * @rptr: pointer where the end of the encoded type is saved
2694 * Internal routine used to "fill" the contents of @type from an
2695 * allocated pointer. This is done this way to avoid doing too
2696 * many mini-allocations (particularly for the MonoFieldType which
2697 * most of the time is just a MonoType, but sometimes might be augmented).
2699 * This routine is used by mono_metadata_parse_type and
2700 * mono_metadata_parse_field_type
2702 * This extracts a Type as specified in Partition II (22.2.12)
2704 * Returns: FALSE if the type could not be loaded
2707 do_mono_metadata_parse_type (MonoType *type, MonoImage *m, MonoGenericContainer *container,
2708 const char *ptr, const char **rptr)
2711 type->type = mono_metadata_decode_value (ptr, &ptr);
2713 switch (type->type){
2714 case MONO_TYPE_VOID:
2715 case MONO_TYPE_BOOLEAN:
2716 case MONO_TYPE_CHAR:
2729 case MONO_TYPE_STRING:
2730 case MONO_TYPE_OBJECT:
2731 case MONO_TYPE_TYPEDBYREF:
2733 case MONO_TYPE_VALUETYPE:
2734 case MONO_TYPE_CLASS: {
2736 token = mono_metadata_parse_typedef_or_ref (m, ptr, &ptr);
2737 type->data.klass = mono_class_get (m, token);
2738 if (!type->data.klass)
2742 case MONO_TYPE_SZARRAY: {
2743 MonoType *etype = mono_metadata_parse_type_full (m, container, MONO_PARSE_MOD_TYPE, 0, ptr, &ptr);
2746 type->data.klass = mono_class_from_mono_type (etype);
2750 type->data.type = mono_metadata_parse_type_full (m, container, MONO_PARSE_MOD_TYPE, 0, ptr, &ptr);
2751 if (!type->data.type)
2754 case MONO_TYPE_FNPTR:
2755 type->data.method = mono_metadata_parse_method_signature_full (m, container, 0, ptr, &ptr);
2757 case MONO_TYPE_ARRAY:
2758 type->data.array = mono_metadata_parse_array_full (m, container, ptr, &ptr);
2760 case MONO_TYPE_MVAR:
2762 type->data.generic_param = mono_metadata_parse_generic_param (m, container, type->type, ptr, &ptr);
2764 case MONO_TYPE_GENERICINST:
2765 ok = do_mono_metadata_parse_generic_class (type, m, container, ptr, &ptr);
2768 g_error ("type 0x%02x not handled in do_mono_metadata_parse_type", type->type);
2777 * mono_metadata_free_type:
2778 * @type: type to free
2780 * Free the memory allocated for type @type which is allocated on the heap.
2783 mono_metadata_free_type (MonoType *type)
2785 if (type >= builtin_types && type < builtin_types + NBUILTIN_TYPES ())
2788 switch (type->type){
2789 case MONO_TYPE_OBJECT:
2790 case MONO_TYPE_STRING:
2791 if (!type->data.klass)
2794 case MONO_TYPE_CLASS:
2795 case MONO_TYPE_VALUETYPE:
2796 if (type == &type->data.klass->byval_arg || type == &type->data.klass->this_arg)
2800 mono_metadata_free_type (type->data.type);
2802 case MONO_TYPE_FNPTR:
2803 mono_metadata_free_method_signature (type->data.method);
2805 case MONO_TYPE_ARRAY:
2806 mono_metadata_free_array (type->data.array);
2815 hex_dump (const char *buffer, int base, int count)
2817 int show_header = 1;
2825 for (i = 0; i < count; i++){
2828 printf ("\n0x%08x: ", (unsigned char) base + i);
2830 printf ("%02x ", (unsigned char) (buffer [i]));
2837 * @mh: The Method header
2838 * @ptr: Points to the beginning of the Section Data (25.3)
2841 parse_section_data (MonoImage *m, MonoMethodHeader *mh, const unsigned char *ptr)
2843 unsigned char sect_data_flags;
2844 const unsigned char *sptr;
2846 guint32 sect_data_len;
2849 /* align on 32-bit boundary */
2850 sptr = ptr = dword_align (ptr);
2851 sect_data_flags = *ptr;
2854 is_fat = sect_data_flags & METHOD_HEADER_SECTION_FAT_FORMAT;
2856 sect_data_len = (ptr [2] << 16) | (ptr [1] << 8) | ptr [0];
2859 sect_data_len = ptr [0];
2863 g_print ("flags: %02x, len: %d\n", sect_data_flags, sect_data_len);
2864 hex_dump (sptr, 0, sect_data_len+8);
2865 g_print ("\nheader: ");
2866 hex_dump (sptr-4, 0, 4);
2870 if (sect_data_flags & METHOD_HEADER_SECTION_EHTABLE) {
2871 const unsigned char *p = dword_align (ptr);
2873 mh->num_clauses = is_fat ? sect_data_len / 24: sect_data_len / 12;
2874 /* we could just store a pointer if we don't need to byteswap */
2875 mh->clauses = mono_image_alloc0_lock (m, sizeof (MonoExceptionClause) * mh->num_clauses);
2876 for (i = 0; i < mh->num_clauses; ++i) {
2877 MonoExceptionClause *ec = &mh->clauses [i];
2880 ec->flags = read32 (p);
2881 ec->try_offset = read32 (p + 4);
2882 ec->try_len = read32 (p + 8);
2883 ec->handler_offset = read32 (p + 12);
2884 ec->handler_len = read32 (p + 16);
2885 tof_value = read32 (p + 20);
2888 ec->flags = read16 (p);
2889 ec->try_offset = read16 (p + 2);
2890 ec->try_len = *(p + 4);
2891 ec->handler_offset = read16 (p + 5);
2892 ec->handler_len = *(p + 7);
2893 tof_value = read32 (p + 8);
2896 if (ec->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
2897 ec->data.filter_offset = tof_value;
2898 } else if (ec->flags == MONO_EXCEPTION_CLAUSE_NONE) {
2899 ec->data.catch_class = tof_value? mono_class_get (m, tof_value): 0;
2901 ec->data.catch_class = NULL;
2903 /* g_print ("try %d: %x %04x-%04x %04x\n", i, ec->flags, ec->try_offset, ec->try_offset+ec->try_len, ec->try_len); */
2907 if (sect_data_flags & METHOD_HEADER_SECTION_MORE_SECTS)
2908 ptr += sect_data_len - 4; /* LAMESPEC: it seems the size includes the header */
2915 * mono_metadata_parse_mh_full:
2916 * @m: metadata context
2917 * @generic_context: generics context
2918 * @ptr: pointer to the method header.
2920 * Decode the method header at @ptr, including pointer to the IL code,
2921 * info about local variables and optional exception tables.
2922 * This is a Mono runtime internal function.
2924 * LOCKING: Acquires the loader lock.
2926 * Returns: a MonoMethodHeader allocated from the image mempool.
2929 mono_metadata_parse_mh_full (MonoImage *m, MonoGenericContainer *container, const char *ptr)
2931 MonoMethodHeader *mh;
2932 unsigned char flags = *(const unsigned char *) ptr;
2933 unsigned char format = flags & METHOD_HEADER_FORMAT_MASK;
2935 guint32 local_var_sig_tok, max_stack, code_size, init_locals;
2936 const unsigned char *code;
2939 g_return_val_if_fail (ptr != NULL, NULL);
2942 case METHOD_HEADER_TINY_FORMAT:
2943 mh = mono_image_alloc0_lock (m, sizeof (MonoMethodHeader));
2946 local_var_sig_tok = 0;
2947 mh->code_size = flags >> 2;
2948 mh->code = (unsigned char*)ptr;
2950 case METHOD_HEADER_TINY_FORMAT1:
2951 mh = mono_image_alloc0_lock (m, sizeof (MonoMethodHeader));
2954 local_var_sig_tok = 0;
2957 * The spec claims 3 bits, but the Beta2 is
2960 mh->code_size = flags >> 2;
2961 mh->code = (unsigned char*)ptr;
2963 case METHOD_HEADER_FAT_FORMAT:
2964 fat_flags = read16 (ptr);
2966 hsize = (fat_flags >> 12) & 0xf;
2967 max_stack = read16 (ptr);
2969 code_size = read32 (ptr);
2971 local_var_sig_tok = read32 (ptr);
2974 if (fat_flags & METHOD_HEADER_INIT_LOCALS)
2979 code = (unsigned char*)ptr;
2981 if (!(fat_flags & METHOD_HEADER_MORE_SECTS))
2985 * There are more sections
2987 ptr = (char*)code + code_size;
2993 if (local_var_sig_tok) {
2994 MonoTableInfo *t = &m->tables [MONO_TABLE_STANDALONESIG];
2995 const char *locals_ptr;
2996 guint32 cols [MONO_STAND_ALONE_SIGNATURE_SIZE];
2997 int len=0, i, bsize;
2999 mono_metadata_decode_row (t, (local_var_sig_tok & 0xffffff)-1, cols, 1);
3000 locals_ptr = mono_metadata_blob_heap (m, cols [MONO_STAND_ALONE_SIGNATURE]);
3001 bsize = mono_metadata_decode_blob_size (locals_ptr, &locals_ptr);
3002 if (*locals_ptr != 0x07)
3003 g_warning ("wrong signature for locals blob");
3005 len = mono_metadata_decode_value (locals_ptr, &locals_ptr);
3006 mh = mono_image_alloc0_lock (m, sizeof (MonoMethodHeader) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (MonoType*));
3007 mh->num_locals = len;
3008 for (i = 0; i < len; ++i) {
3009 mh->locals [i] = mono_metadata_parse_type_full (
3010 m, container, MONO_PARSE_LOCAL, 0, locals_ptr, &locals_ptr);
3011 if (!mh->locals [i]) {
3016 mh = mono_image_alloc0_lock (m, sizeof (MonoMethodHeader));
3019 mh->code_size = code_size;
3020 mh->max_stack = max_stack;
3021 mh->init_locals = init_locals;
3022 if (fat_flags & METHOD_HEADER_MORE_SECTS)
3023 parse_section_data (m, mh, (const unsigned char*)ptr);
3028 * mono_metadata_parse_mh:
3029 * @generic_context: generics context
3030 * @ptr: pointer to the method header.
3032 * Decode the method header at @ptr, including pointer to the IL code,
3033 * info about local variables and optional exception tables.
3034 * This is a Mono runtime internal function.
3036 * Returns: a MonoMethodHeader.
3039 mono_metadata_parse_mh (MonoImage *m, const char *ptr)
3041 MonoMethodHeader *res;
3043 mono_loader_lock ();
3045 res = mono_metadata_parse_mh_full (m, NULL, ptr);
3047 mono_loader_unlock ();
3053 * mono_metadata_free_mh:
3054 * @mh: a method header
3056 * Free the memory allocated for the method header.
3057 * This is a Mono runtime internal function.
3060 mono_metadata_free_mh (MonoMethodHeader *mh)
3062 /* Allocated from the mempool */
3066 * mono_method_header_get_code:
3067 * @header: a MonoMethodHeader pointer
3068 * @code_size: memory location for returning the code size
3069 * @max_stack: memory location for returning the max stack
3071 * Method header accessor to retreive info about the IL code properties:
3072 * a pointer to the IL code itself, the size of the code and the max number
3073 * of stack slots used by the code.
3075 * Returns: pointer to the IL code represented by the method header.
3077 const unsigned char*
3078 mono_method_header_get_code (MonoMethodHeader *header, guint32* code_size, guint32* max_stack)
3081 *code_size = header->code_size;
3083 *max_stack = header->max_stack;
3084 return header->code;
3088 * mono_method_header_get_locals:
3089 * @header: a MonoMethodHeader pointer
3090 * @num_locals: memory location for returning the number of local variables
3091 * @init_locals: memory location for returning the init_locals flag
3093 * Method header accessor to retreive info about the local variables:
3094 * an array of local types, the number of locals and whether the locals
3095 * are supposed to be initialized to 0 on method entry
3097 * Returns: pointer to an array of types of the local variables
3100 mono_method_header_get_locals (MonoMethodHeader *header, guint32* num_locals, gboolean *init_locals)
3103 *num_locals = header->num_locals;
3105 *init_locals = header->init_locals;
3106 return header->locals;
3110 * mono_method_header_get_num_clauses:
3111 * @header: a MonoMethodHeader pointer
3113 * Method header accessor to retreive the number of exception clauses.
3115 * Returns: the number of exception clauses present
3118 mono_method_header_get_num_clauses (MonoMethodHeader *header)
3120 return header->num_clauses;
3124 * mono_method_header_get_clauses:
3125 * @header: a MonoMethodHeader pointer
3126 * @method: MonoMethod the header belongs to
3127 * @iter: pointer to a iterator
3128 * @clause: pointer to a MonoExceptionClause structure which will be filled with the info
3130 * Get the info about the exception clauses in the method. Set *iter to NULL to
3131 * initiate the iteration, then call the method repeatedly until it returns FALSE.
3132 * At each iteration, the structure pointed to by clause if filled with the
3133 * exception clause information.
3135 * Returns: TRUE if clause was filled with info, FALSE if there are no more exception
3139 mono_method_header_get_clauses (MonoMethodHeader *header, MonoMethod *method, gpointer *iter, MonoExceptionClause *clause)
3141 MonoExceptionClause *sc;
3142 /* later we'll be able to use this interface to parse the clause info on demand,
3143 * without allocating anything.
3145 if (!iter || !header->num_clauses)
3148 *iter = sc = header->clauses;
3154 if (sc < header->clauses + header->num_clauses) {
3163 * mono_metadata_parse_field_type:
3164 * @m: metadata context to extract information from
3165 * @ptr: pointer to the field signature
3166 * @rptr: pointer updated to match the end of the decoded stream
3168 * Parses the field signature, and returns the type information for it.
3170 * Returns: The MonoType that was extracted from @ptr.
3173 mono_metadata_parse_field_type (MonoImage *m, short field_flags, const char *ptr, const char **rptr)
3175 return mono_metadata_parse_type (m, MONO_PARSE_FIELD, field_flags, ptr, rptr);
3179 * mono_metadata_parse_param:
3180 * @m: metadata context to extract information from
3181 * @ptr: pointer to the param signature
3182 * @rptr: pointer updated to match the end of the decoded stream
3184 * Parses the param signature, and returns the type information for it.
3186 * Returns: The MonoType that was extracted from @ptr.
3189 mono_metadata_parse_param (MonoImage *m, const char *ptr, const char **rptr)
3191 return mono_metadata_parse_type (m, MONO_PARSE_PARAM, 0, ptr, rptr);
3195 * mono_metadata_token_from_dor:
3196 * @dor_token: A TypeDefOrRef coded index
3198 * dor_token is a TypeDefOrRef coded index: it contains either
3199 * a TypeDef, TypeRef or TypeSpec in the lower bits, and the upper
3200 * bits contain an index into the table.
3202 * Returns: an expanded token
3205 mono_metadata_token_from_dor (guint32 dor_index)
3209 table = dor_index & 0x03;
3210 idx = dor_index >> 2;
3213 case 0: /* TypeDef */
3214 return MONO_TOKEN_TYPE_DEF | idx;
3215 case 1: /* TypeRef */
3216 return MONO_TOKEN_TYPE_REF | idx;
3217 case 2: /* TypeSpec */
3218 return MONO_TOKEN_TYPE_SPEC | idx;
3220 g_assert_not_reached ();
3227 * We use this to pass context information to the row locator
3230 int idx; /* The index that we are trying to locate */
3231 int col_idx; /* The index in the row where idx may be stored */
3232 MonoTableInfo *t; /* pointer to the table */
3237 * How the row locator works.
3242 * ___|___------> _______
3245 * A column in the rows of table A references an index in table B.
3246 * For example A may be the TYPEDEF table and B the METHODDEF table.
3248 * Given an index in table B we want to get the row in table A
3249 * where the column n references our index in B.
3251 * In the locator_t structure:
3253 * col_idx is the column number
3254 * index is the index in table B
3255 * result will be the index in table A
3258 * Table A Table B column (in table A)
3259 * TYPEDEF METHODDEF MONO_TYPEDEF_METHOD_LIST
3260 * TYPEDEF FIELD MONO_TYPEDEF_FIELD_LIST
3261 * PROPERTYMAP PROPERTY MONO_PROPERTY_MAP_PROPERTY_LIST
3262 * INTERFIMPL TYPEDEF MONO_INTERFACEIMPL_CLASS
3263 * METHODSEM PROPERTY ASSOCIATION (encoded index)
3265 * Note that we still don't support encoded indexes.
3269 typedef_locator (const void *a, const void *b)
3271 locator_t *loc = (locator_t *) a;
3272 const char *bb = (const char *) b;
3273 int typedef_index = (bb - loc->t->base) / loc->t->row_size;
3274 guint32 col, col_next;
3276 col = mono_metadata_decode_row_col (loc->t, typedef_index, loc->col_idx);
3282 * Need to check that the next row is valid.
3284 if (typedef_index + 1 < loc->t->rows) {
3285 col_next = mono_metadata_decode_row_col (loc->t, typedef_index + 1, loc->col_idx);
3286 if (loc->idx >= col_next)
3289 if (col == col_next)
3293 loc->result = typedef_index;
3299 table_locator (const void *a, const void *b)
3301 locator_t *loc = (locator_t *) a;
3302 const char *bb = (const char *) b;
3303 guint32 table_index = (bb - loc->t->base) / loc->t->row_size;
3306 col = mono_metadata_decode_row_col (loc->t, table_index, loc->col_idx);
3308 if (loc->idx == col) {
3309 loc->result = table_index;
3319 declsec_locator (const void *a, const void *b)
3321 locator_t *loc = (locator_t *) a;
3322 const char *bb = (const char *) b;
3323 guint32 table_index = (bb - loc->t->base) / loc->t->row_size;
3326 col = mono_metadata_decode_row_col (loc->t, table_index, loc->col_idx);
3328 if (loc->idx == col) {
3329 loc->result = table_index;
3341 * Return the 1-based row index in TABLE, which must be one of the *Ptr tables,
3342 * which contains IDX.
3345 search_ptr_table (MonoImage *image, int table, int idx)
3347 MonoTableInfo *ptrdef = &image->tables [table];
3350 /* Use a linear search to find our index in the table */
3351 for (i = 0; i < ptrdef->rows; i ++)
3352 /* All the Ptr tables have the same structure */
3353 if (mono_metadata_decode_row_col (ptrdef, i, 0) == idx)
3356 if (i < ptrdef->rows)
3363 * mono_metadata_typedef_from_field:
3364 * @meta: metadata context
3365 * @index: FieldDef token
3367 * Returns: the 1-based index into the TypeDef table of the type that
3368 * declared the field described by @index, or 0 if not found.
3371 mono_metadata_typedef_from_field (MonoImage *meta, guint32 index)
3373 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_TYPEDEF];
3379 loc.idx = mono_metadata_token_index (index);
3380 loc.col_idx = MONO_TYPEDEF_FIELD_LIST;
3383 if (meta->uncompressed_metadata)
3384 loc.idx = search_ptr_table (meta, MONO_TABLE_FIELD_POINTER, loc.idx);
3386 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, typedef_locator))
3387 g_assert_not_reached ();
3389 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
3390 return loc.result + 1;
3394 * mono_metadata_typedef_from_method:
3395 * @meta: metadata context
3396 * @index: MethodDef token
3398 * Returns: the 1-based index into the TypeDef table of the type that
3399 * declared the method described by @index. 0 if not found.
3402 mono_metadata_typedef_from_method (MonoImage *meta, guint32 index)
3404 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_TYPEDEF];
3410 loc.idx = mono_metadata_token_index (index);
3411 loc.col_idx = MONO_TYPEDEF_METHOD_LIST;
3414 if (meta->uncompressed_metadata)
3415 loc.idx = search_ptr_table (meta, MONO_TABLE_METHOD_POINTER, loc.idx);
3417 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, typedef_locator))
3418 g_assert_not_reached ();
3420 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
3421 return loc.result + 1;
3425 * mono_metadata_interfaces_from_typedef_full:
3426 * @meta: metadata context
3427 * @index: typedef token
3429 * The array of interfaces that the @index typedef token implements is returned in
3430 * @interfaces. The number of elemnts in the array is returned in @count.
3432 * LOCKING: Assumes the loader lock is held.
3434 * Returns: TRUE on success, FALSE on failure.
3437 mono_metadata_interfaces_from_typedef_full (MonoImage *meta, guint32 index, MonoClass ***interfaces, guint *count, MonoGenericContext *context)
3439 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_INTERFACEIMPL];
3442 guint32 cols [MONO_INTERFACEIMPL_SIZE];
3451 loc.idx = mono_metadata_token_index (index);
3452 loc.col_idx = MONO_INTERFACEIMPL_CLASS;
3455 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
3460 * We may end up in the middle of the rows...
3463 if (loc.idx == mono_metadata_decode_row_col (tdef, start - 1, MONO_INTERFACEIMPL_CLASS))
3469 while (pos < tdef->rows) {
3470 mono_metadata_decode_row (tdef, pos, cols, MONO_INTERFACEIMPL_SIZE);
3471 if (cols [MONO_INTERFACEIMPL_CLASS] != loc.idx)
3476 result = mono_image_alloc0_lock (meta, sizeof (MonoClass*) * (pos - start));
3479 while (pos < tdef->rows) {
3482 mono_metadata_decode_row (tdef, pos, cols, MONO_INTERFACEIMPL_SIZE);
3483 if (cols [MONO_INTERFACEIMPL_CLASS] != loc.idx)
3485 iface = mono_class_get_full (
3486 meta, mono_metadata_token_from_dor (cols [MONO_INTERFACEIMPL_INTERFACE]), context);
3489 result [pos - start] = iface;
3492 *count = pos - start;
3493 *interfaces = result;
3498 mono_metadata_interfaces_from_typedef (MonoImage *meta, guint32 index, guint *count)
3500 MonoClass **interfaces;
3503 mono_loader_lock ();
3504 rv = mono_metadata_interfaces_from_typedef_full (meta, index, &interfaces, count, NULL);
3505 mono_loader_unlock ();
3513 * mono_metadata_nested_in_typedef:
3514 * @meta: metadata context
3515 * @index: typedef token
3517 * Returns: the 1-based index into the TypeDef table of the type
3518 * where the type described by @index is nested.
3519 * Retruns 0 if @index describes a non-nested type.
3522 mono_metadata_nested_in_typedef (MonoImage *meta, guint32 index)
3524 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_NESTEDCLASS];
3530 loc.idx = mono_metadata_token_index (index);
3531 loc.col_idx = MONO_NESTED_CLASS_NESTED;
3534 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
3537 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
3538 return mono_metadata_decode_row_col (tdef, loc.result, MONO_NESTED_CLASS_ENCLOSING) | MONO_TOKEN_TYPE_DEF;
3542 * mono_metadata_nesting_typedef:
3543 * @meta: metadata context
3544 * @index: typedef token
3546 * Returns: the 1-based index into the TypeDef table of the first type
3547 * that is nested inside the type described by @index. The search starts at
3548 * @start_index. returns 0 if no such type is found.
3551 mono_metadata_nesting_typedef (MonoImage *meta, guint32 index, guint32 start_index)
3553 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_NESTEDCLASS];
3555 guint32 class_index = mono_metadata_token_index (index);
3560 start = start_index;
3562 while (start <= tdef->rows) {
3563 if (class_index == mono_metadata_decode_row_col (tdef, start - 1, MONO_NESTED_CLASS_ENCLOSING))
3569 if (start > tdef->rows)
3576 * mono_metadata_packing_from_typedef:
3577 * @meta: metadata context
3578 * @index: token representing a type
3580 * Returns: the info stored in the ClassLAyout table for the given typedef token
3581 * into the @packing and @size pointers.
3582 * Returns 0 if the info is not found.
3585 mono_metadata_packing_from_typedef (MonoImage *meta, guint32 index, guint32 *packing, guint32 *size)
3587 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_CLASSLAYOUT];
3589 guint32 cols [MONO_CLASS_LAYOUT_SIZE];
3594 loc.idx = mono_metadata_token_index (index);
3595 loc.col_idx = MONO_CLASS_LAYOUT_PARENT;
3598 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
3601 mono_metadata_decode_row (tdef, loc.result, cols, MONO_CLASS_LAYOUT_SIZE);
3603 *packing = cols [MONO_CLASS_LAYOUT_PACKING_SIZE];
3605 *size = cols [MONO_CLASS_LAYOUT_CLASS_SIZE];
3607 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
3608 return loc.result + 1;
3612 * mono_metadata_custom_attrs_from_index:
3613 * @meta: metadata context
3614 * @index: token representing the parent
3616 * Returns: the 1-based index into the CustomAttribute table of the first
3617 * attribute which belongs to the metadata object described by @index.
3618 * Returns 0 if no such attribute is found.
3621 mono_metadata_custom_attrs_from_index (MonoImage *meta, guint32 index)
3623 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_CUSTOMATTRIBUTE];
3630 loc.col_idx = MONO_CUSTOM_ATTR_PARENT;
3633 /* FIXME: Index translation */
3635 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
3638 /* Find the first entry by searching backwards */
3639 while ((loc.result > 0) && (mono_metadata_decode_row_col (tdef, loc.result - 1, MONO_CUSTOM_ATTR_PARENT) == index))
3642 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
3643 return loc.result + 1;
3647 * mono_metadata_declsec_from_index:
3648 * @meta: metadata context
3649 * @index: token representing the parent
3651 * Returns: the 0-based index into the DeclarativeSecurity table of the first
3652 * attribute which belongs to the metadata object described by @index.
3653 * Returns -1 if no such attribute is found.
3656 mono_metadata_declsec_from_index (MonoImage *meta, guint32 index)
3658 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_DECLSECURITY];
3665 loc.col_idx = MONO_DECL_SECURITY_PARENT;
3668 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, declsec_locator))
3671 /* Find the first entry by searching backwards */
3672 while ((loc.result > 0) && (mono_metadata_decode_row_col (tdef, loc.result - 1, MONO_DECL_SECURITY_PARENT) == index))
3680 mono_backtrace (int limit)
3685 backtrace (array, limit);
3686 names = backtrace_symbols (array, limit);
3687 for (i =0; i < limit; ++i) {
3688 g_print ("\t%s\n", names [i]);
3695 /*#define __alignof__(a) sizeof(a)*/
3696 #define __alignof__(type) G_STRUCT_OFFSET(struct { char c; type x; }, x)
3701 * @t: the type to return the size of
3703 * Returns: the number of bytes required to hold an instance of this
3707 mono_type_size (MonoType *t, int *align)
3714 *align = __alignof__(gpointer);
3715 return sizeof (gpointer);
3719 case MONO_TYPE_VOID:
3722 case MONO_TYPE_BOOLEAN:
3723 *align = __alignof__(gint8);
3727 *align = __alignof__(gint8);
3729 case MONO_TYPE_CHAR:
3732 *align = __alignof__(gint16);
3736 *align = __alignof__(gint32);
3739 *align = __alignof__(float);
3743 *align = __alignof__(gint64);
3746 *align = __alignof__(double);
3750 *align = __alignof__(gpointer);
3751 return sizeof (gpointer);
3752 case MONO_TYPE_STRING:
3753 *align = __alignof__(gpointer);
3754 return sizeof (gpointer);
3755 case MONO_TYPE_OBJECT:
3756 *align = __alignof__(gpointer);
3757 return sizeof (gpointer);
3758 case MONO_TYPE_VALUETYPE: {
3759 if (t->data.klass->enumtype)
3760 return mono_type_size (mono_class_enum_basetype (t->data.klass), align);
3762 return mono_class_value_size (t->data.klass, (guint32*)align);
3764 case MONO_TYPE_CLASS:
3765 case MONO_TYPE_SZARRAY:
3767 case MONO_TYPE_FNPTR:
3768 case MONO_TYPE_ARRAY:
3769 *align = __alignof__(gpointer);
3770 return sizeof (gpointer);
3771 case MONO_TYPE_TYPEDBYREF:
3772 return mono_class_value_size (mono_defaults.typed_reference_class, (guint32*)align);
3773 case MONO_TYPE_GENERICINST: {
3774 MonoGenericClass *gclass = t->data.generic_class;
3775 MonoClass *container_class = gclass->container_class;
3777 // g_assert (!gclass->inst->is_open);
3779 if (container_class->valuetype) {
3780 if (container_class->enumtype)
3781 return mono_type_size (mono_class_enum_basetype (container_class), align);
3783 return mono_class_value_size (mono_class_from_mono_type (t), (guint32*)align);
3785 *align = __alignof__(gpointer);
3786 return sizeof (gpointer);
3790 case MONO_TYPE_MVAR:
3791 /* FIXME: Martin, this is wrong. */
3792 *align = __alignof__(gpointer);
3793 return sizeof (gpointer);
3795 g_error ("mono_type_size: type 0x%02x unknown", t->type);
3801 * mono_type_stack_size:
3802 * @t: the type to return the size it uses on the stack
3804 * Returns: the number of bytes required to hold an instance of this
3805 * type on the runtime stack
3808 mono_type_stack_size (MonoType *t, int *align)
3810 return mono_type_stack_size_internal (t, align, FALSE);
3814 mono_type_stack_size_internal (MonoType *t, int *align, gboolean allow_open)
3817 #if SIZEOF_VOID_P == SIZEOF_REGISTER
3818 int stack_slot_size = sizeof (gpointer);
3819 int stack_slot_align = __alignof__ (gpointer);
3820 #elif SIZEOF_VOID_P < SIZEOF_REGISTER
3821 int stack_slot_size = SIZEOF_REGISTER;
3822 int stack_slot_align = SIZEOF_REGISTER;
3825 g_assert (t != NULL);
3831 *align = stack_slot_align;
3832 return stack_slot_size;
3836 case MONO_TYPE_BOOLEAN:
3837 case MONO_TYPE_CHAR:
3846 case MONO_TYPE_STRING:
3847 case MONO_TYPE_OBJECT:
3848 case MONO_TYPE_CLASS:
3849 case MONO_TYPE_SZARRAY:
3851 case MONO_TYPE_FNPTR:
3852 case MONO_TYPE_ARRAY:
3853 *align = stack_slot_align;
3854 return stack_slot_size;
3856 case MONO_TYPE_MVAR:
3857 g_assert (allow_open);
3858 *align = stack_slot_align;
3859 return stack_slot_size;
3860 case MONO_TYPE_TYPEDBYREF:
3861 *align = stack_slot_align;
3862 return stack_slot_size * 3;
3864 *align = __alignof__(float);
3865 return sizeof (float);
3868 *align = __alignof__(gint64);
3869 return sizeof (gint64);
3871 *align = __alignof__(double);
3872 return sizeof (double);
3873 case MONO_TYPE_VALUETYPE: {
3876 if (t->data.klass->enumtype)
3877 return mono_type_stack_size_internal (mono_class_enum_basetype (t->data.klass), align, allow_open);
3879 size = mono_class_value_size (t->data.klass, (guint32*)align);
3881 *align = *align + stack_slot_align - 1;
3882 *align &= ~(stack_slot_align - 1);
3884 size += stack_slot_size - 1;
3885 size &= ~(stack_slot_size - 1);
3890 case MONO_TYPE_GENERICINST: {
3891 MonoGenericClass *gclass = t->data.generic_class;
3892 MonoClass *container_class = gclass->container_class;
3895 g_assert (!gclass->context.class_inst->is_open);
3897 if (container_class->valuetype) {
3898 if (container_class->enumtype)
3899 return mono_type_stack_size_internal (mono_class_enum_basetype (container_class), align, allow_open);
3901 guint32 size = mono_class_value_size (mono_class_from_mono_type (t), (guint32*)align);
3903 *align = *align + stack_slot_align - 1;
3904 *align &= ~(stack_slot_align - 1);
3906 size += stack_slot_size - 1;
3907 size &= ~(stack_slot_size - 1);
3912 *align = stack_slot_align;
3913 return stack_slot_size;
3917 g_error ("type 0x%02x unknown", t->type);
3923 mono_type_generic_inst_is_valuetype (MonoType *type)
3925 g_assert (type->type == MONO_TYPE_GENERICINST);
3926 return type->data.generic_class->container_class->valuetype;
3930 mono_metadata_generic_class_is_valuetype (MonoGenericClass *gclass)
3932 return gclass->container_class->valuetype;
3936 _mono_metadata_generic_class_equal (const MonoGenericClass *g1, const MonoGenericClass *g2, gboolean signature_only)
3938 MonoGenericInst *i1 = g1->context.class_inst;
3939 MonoGenericInst *i2 = g2->context.class_inst;
3941 if (g1->is_dynamic != g2->is_dynamic)
3943 if (!mono_metadata_class_equal (g1->container_class, g2->container_class, signature_only))
3945 if (!mono_generic_inst_equal_full (i1, i2, signature_only))
3947 return g1->is_tb_open == g2->is_tb_open;
3951 _mono_metadata_generic_class_container_equal (const MonoGenericClass *g1, MonoClass *c2, gboolean signature_only)
3953 MonoGenericInst *i1 = g1->context.class_inst;
3954 MonoGenericInst *i2 = c2->generic_container->context.class_inst;
3956 if (!mono_metadata_class_equal (g1->container_class, c2, signature_only))
3958 if (!mono_generic_inst_equal_full (i1, i2, signature_only))
3960 return !g1->is_tb_open;
3964 mono_metadata_generic_context_hash (const MonoGenericContext *context)
3966 /* FIXME: check if this seed is good enough */
3967 guint hash = 0xc01dfee7;
3968 if (context->class_inst)
3969 hash = ((hash << 5) - hash) ^ mono_metadata_generic_inst_hash (context->class_inst);
3970 if (context->method_inst)
3971 hash = ((hash << 5) - hash) ^ mono_metadata_generic_inst_hash (context->method_inst);
3976 mono_metadata_generic_context_equal (const MonoGenericContext *g1, const MonoGenericContext *g2)
3978 return g1->class_inst == g2->class_inst && g1->method_inst == g2->method_inst;
3982 * mono_metadata_type_hash:
3985 * Computes an hash value for @t1 to be used in GHashTable.
3988 mono_metadata_type_hash (MonoType *t1)
3990 guint hash = t1->type;
3992 hash |= t1->byref << 6; /* do not collide with t1->type values */
3994 case MONO_TYPE_VALUETYPE:
3995 case MONO_TYPE_CLASS:
3996 case MONO_TYPE_SZARRAY:
3997 /* check if the distribution is good enough */
3998 return ((hash << 5) - hash) ^ g_str_hash (t1->data.klass->name);
4000 return ((hash << 5) - hash) ^ mono_metadata_type_hash (t1->data.type);
4001 case MONO_TYPE_ARRAY:
4002 return ((hash << 5) - hash) ^ mono_metadata_type_hash (&t1->data.array->eklass->byval_arg);
4003 case MONO_TYPE_GENERICINST:
4004 return ((hash << 5) - hash) ^ mono_generic_class_hash (t1->data.generic_class);
4010 mono_metadata_generic_param_equal (MonoGenericParam *p1, MonoGenericParam *p2, gboolean signature_only)
4014 if (p1->num != p2->num)
4018 * We have to compare the image as well because if we didn't,
4019 * the generic_inst_cache lookup wouldn't care about the image
4020 * of generic params, so what could happen is that a generic
4021 * inst with params from image A is put into the cache, then
4022 * image B gets that generic inst from the cache, image A is
4023 * unloaded, so the inst is deleted, but image B still retains
4026 * The AOT runtime doesn't set the image when it's decoding
4027 * types, so we only compare it when the owner is NULL.
4029 if (p1->owner == p2->owner && (p1->owner || p1->image == p2->image))
4033 * If `signature_only' is true, we're comparing two (method) signatures.
4034 * In this case, the owner of two type parameters doesn't need to match.
4037 return signature_only;
4041 mono_metadata_class_equal (MonoClass *c1, MonoClass *c2, gboolean signature_only)
4045 if (c1->generic_class && c2->generic_class)
4046 return _mono_metadata_generic_class_equal (c1->generic_class, c2->generic_class, signature_only);
4047 if (c1->generic_class && c2->generic_container)
4048 return _mono_metadata_generic_class_container_equal (c1->generic_class, c2, signature_only);
4049 if (c1->generic_container && c2->generic_class)
4050 return _mono_metadata_generic_class_container_equal (c2->generic_class, c1, signature_only);
4051 if ((c1->byval_arg.type == MONO_TYPE_VAR) && (c2->byval_arg.type == MONO_TYPE_VAR))
4052 return mono_metadata_generic_param_equal (
4053 c1->byval_arg.data.generic_param, c2->byval_arg.data.generic_param, signature_only);
4054 if ((c1->byval_arg.type == MONO_TYPE_MVAR) && (c2->byval_arg.type == MONO_TYPE_MVAR))
4055 return mono_metadata_generic_param_equal (
4056 c1->byval_arg.data.generic_param, c2->byval_arg.data.generic_param, signature_only);
4057 if (signature_only &&
4058 (c1->byval_arg.type == MONO_TYPE_SZARRAY) && (c2->byval_arg.type == MONO_TYPE_SZARRAY))
4059 return mono_metadata_class_equal (c1->byval_arg.data.klass, c2->byval_arg.data.klass, signature_only);
4064 mono_metadata_fnptr_equal (MonoMethodSignature *s1, MonoMethodSignature *s2, gboolean signature_only)
4066 gpointer iter1 = 0, iter2 = 0;
4070 if (s1->call_convention != s2->call_convention)
4072 if (s1->sentinelpos != s2->sentinelpos)
4074 if (s1->hasthis != s2->hasthis)
4076 if (s1->explicit_this != s2->explicit_this)
4078 if (! do_mono_metadata_type_equal (s1->ret, s2->ret, signature_only))
4080 if (s1->param_count != s2->param_count)
4084 MonoType *t1 = mono_signature_get_params (s1, &iter1);
4085 MonoType *t2 = mono_signature_get_params (s2, &iter2);
4087 if (t1 == NULL || t2 == NULL)
4089 if (! do_mono_metadata_type_equal (t1, t2, signature_only))
4095 * mono_metadata_type_equal:
4099 * Determine if @t1 and @t2 represent the same type.
4100 * Returns: #TRUE if @t1 and @t2 are equal.
4103 do_mono_metadata_type_equal (MonoType *t1, MonoType *t2, gboolean signature_only)
4105 if (t1->type != t2->type || t1->byref != t2->byref)
4109 case MONO_TYPE_VOID:
4110 case MONO_TYPE_BOOLEAN:
4111 case MONO_TYPE_CHAR:
4122 case MONO_TYPE_STRING:
4125 case MONO_TYPE_OBJECT:
4126 case MONO_TYPE_TYPEDBYREF:
4128 case MONO_TYPE_VALUETYPE:
4129 case MONO_TYPE_CLASS:
4130 case MONO_TYPE_SZARRAY:
4131 return mono_metadata_class_equal (t1->data.klass, t2->data.klass, signature_only);
4133 return do_mono_metadata_type_equal (t1->data.type, t2->data.type, signature_only);
4134 case MONO_TYPE_ARRAY:
4135 if (t1->data.array->rank != t2->data.array->rank)
4137 return mono_metadata_class_equal (t1->data.array->eklass, t2->data.array->eklass, signature_only);
4138 case MONO_TYPE_GENERICINST:
4139 return _mono_metadata_generic_class_equal (
4140 t1->data.generic_class, t2->data.generic_class, signature_only);
4142 return mono_metadata_generic_param_equal (
4143 t1->data.generic_param, t2->data.generic_param, signature_only);
4144 case MONO_TYPE_MVAR:
4145 return mono_metadata_generic_param_equal (
4146 t1->data.generic_param, t2->data.generic_param, signature_only);
4147 case MONO_TYPE_FNPTR:
4148 return mono_metadata_fnptr_equal (t1->data.method, t2->data.method, signature_only);
4150 g_error ("implement type compare for %0x!", t1->type);
4158 mono_metadata_type_equal (MonoType *t1, MonoType *t2)
4160 return do_mono_metadata_type_equal (t1, t2, FALSE);
4164 * mono_metadata_type_equal_full:
4167 * @signature_only: if signature only comparison should be made
4169 * Determine if @t1 and @t2 are signature compatible if @signature_only is #TRUE, otherwise
4170 * behaves the same way as mono_metadata_type_equal.
4171 * The function mono_metadata_type_equal(a, b) is just a shortcut for mono_metadata_type_equal_full(a, b, FALSE).
4172 * Returns: #TRUE if @t1 and @t2 are equal taking @signature_only into account.
4175 mono_metadata_type_equal_full (MonoType *t1, MonoType *t2, gboolean signature_only)
4177 return do_mono_metadata_type_equal (t1, t2, signature_only);
4181 * mono_metadata_signature_equal:
4182 * @sig1: a signature
4183 * @sig2: another signature
4185 * Determine if @sig1 and @sig2 represent the same signature, with the
4186 * same number of arguments and the same types.
4187 * Returns: #TRUE if @sig1 and @sig2 are equal.
4190 mono_metadata_signature_equal (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
4194 if (sig1->hasthis != sig2->hasthis || sig1->param_count != sig2->param_count)
4197 if (sig1->generic_param_count != sig2->generic_param_count)
4201 * We're just comparing the signatures of two methods here:
4203 * If we have two generic methods `void Foo<U> (U u)' and `void Bar<V> (V v)',
4204 * U and V are equal here.
4206 * That's what the `signature_only' argument of do_mono_metadata_type_equal() is for.
4209 for (i = 0; i < sig1->param_count; i++) {
4210 MonoType *p1 = sig1->params[i];
4211 MonoType *p2 = sig2->params[i];
4213 /* if (p1->attrs != p2->attrs)
4216 if (!do_mono_metadata_type_equal (p1, p2, TRUE))
4220 if (!do_mono_metadata_type_equal (sig1->ret, sig2->ret, TRUE))
4226 * mono_metadata_type_dup:
4227 * @mp: mempool to use
4228 * @original: type to duplicate
4230 * Returns: copy of type allocated from mempool (or from the heap, if @mp is null).
4233 mono_metadata_type_dup (MonoMemPool *mp, const MonoType *o)
4236 int sizeof_o = sizeof (MonoType);
4238 sizeof_o += (o->num_mods - MONO_ZERO_LEN_ARRAY) * sizeof (MonoCustomMod);
4240 mono_loader_lock ();
4241 r = mp ? mono_mempool_alloc0 (mp, sizeof_o) : g_malloc (sizeof_o);
4242 mono_loader_unlock ();
4244 memcpy (r, o, sizeof_o);
4246 if (o->type == MONO_TYPE_PTR) {
4247 r->data.type = mono_metadata_type_dup (mp, o->data.type);
4248 } else if (o->type == MONO_TYPE_ARRAY) {
4249 r->data.array = mono_dup_array_type (mp, o->data.array);
4250 } else if (o->type == MONO_TYPE_FNPTR) {
4251 /*FIXME the dup'ed signature is leaked mono_metadata_free_type*/
4252 r->data.method = mono_metadata_signature_deep_dup (mp, o->data.method);
4258 mono_signature_hash (MonoMethodSignature *sig)
4260 guint i, res = sig->ret->type;
4262 for (i = 0; i < sig->param_count; i++)
4263 res = (res << 5) - res + mono_type_hash (sig->params[i]);
4269 * mono_metadata_encode_value:
4270 * @value: value to encode
4271 * @buf: buffer where to write the compressed representation
4272 * @endbuf: pointer updated to point at the end of the encoded output
4274 * Encodes the value @value in the compressed representation used
4275 * in metadata and stores the result in @buf. @buf needs to be big
4276 * enough to hold the data (4 bytes).
4279 mono_metadata_encode_value (guint32 value, char *buf, char **endbuf)
4285 else if (value < 0x4000) {
4286 p [0] = 0x80 | (value >> 8);
4287 p [1] = value & 0xff;
4290 p [0] = (value >> 24) | 0xc0;
4291 p [1] = (value >> 16) & 0xff;
4292 p [2] = (value >> 8) & 0xff;
4293 p [3] = value & 0xff;
4301 * mono_metadata_field_info:
4302 * @meta: the Image the field is defined in
4303 * @index: the index in the field table representing the field
4304 * @offset: a pointer to an integer where to store the offset that
4305 * may have been specified for the field in a FieldLayout table
4306 * @rva: a pointer to the RVA of the field data in the image that
4307 * may have been defined in a FieldRVA table
4308 * @marshal_spec: a pointer to the marshal spec that may have been
4309 * defined for the field in a FieldMarshal table.
4311 * Gather info for field @index that may have been defined in the FieldLayout,
4312 * FieldRVA and FieldMarshal tables.
4313 * Either of offset, rva and marshal_spec can be NULL if you're not interested
4317 mono_metadata_field_info (MonoImage *meta, guint32 index, guint32 *offset, guint32 *rva,
4318 MonoMarshalSpec **marshal_spec)
4320 mono_metadata_field_info_with_mempool (NULL, meta, index, offset, rva, marshal_spec);
4324 mono_metadata_field_info_with_mempool (MonoMemPool *mempool, MonoImage *meta, guint32 index, guint32 *offset, guint32 *rva,
4325 MonoMarshalSpec **marshal_spec)
4327 MonoTableInfo *tdef;
4330 loc.idx = index + 1;
4331 if (meta->uncompressed_metadata)
4332 loc.idx = search_ptr_table (meta, MONO_TABLE_FIELD_POINTER, loc.idx);
4335 tdef = &meta->tables [MONO_TABLE_FIELDLAYOUT];
4337 loc.col_idx = MONO_FIELD_LAYOUT_FIELD;
4340 if (tdef->base && bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator)) {
4341 *offset = mono_metadata_decode_row_col (tdef, loc.result, MONO_FIELD_LAYOUT_OFFSET);
4343 *offset = (guint32)-1;
4347 tdef = &meta->tables [MONO_TABLE_FIELDRVA];
4349 loc.col_idx = MONO_FIELD_RVA_FIELD;
4352 if (tdef->base && bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator)) {
4354 * LAMESPEC: There is no signature, no nothing, just the raw data.
4356 *rva = mono_metadata_decode_row_col (tdef, loc.result, MONO_FIELD_RVA_RVA);
4364 if ((p = mono_metadata_get_marshal_info (meta, index, TRUE))) {
4365 *marshal_spec = mono_metadata_parse_marshal_spec_with_mempool (mempool, p);
4372 * mono_metadata_get_constant_index:
4373 * @meta: the Image the field is defined in
4374 * @index: the token that may have a row defined in the constants table
4375 * @hint: possible position for the row
4377 * @token must be a FieldDef, ParamDef or PropertyDef token.
4379 * Returns: the index into the Constants table or 0 if not found.
4382 mono_metadata_get_constant_index (MonoImage *meta, guint32 token, guint32 hint)
4384 MonoTableInfo *tdef;
4386 guint32 index = mono_metadata_token_index (token);
4388 tdef = &meta->tables [MONO_TABLE_CONSTANT];
4389 index <<= MONO_HASCONSTANT_BITS;
4390 switch (mono_metadata_token_table (token)) {
4391 case MONO_TABLE_FIELD:
4392 index |= MONO_HASCONSTANT_FIEDDEF;
4394 case MONO_TABLE_PARAM:
4395 index |= MONO_HASCONSTANT_PARAM;
4397 case MONO_TABLE_PROPERTY:
4398 index |= MONO_HASCONSTANT_PROPERTY;
4401 g_warning ("Not a valid token for the constant table: 0x%08x", token);
4405 loc.col_idx = MONO_CONSTANT_PARENT;
4408 /* FIXME: Index translation */
4410 if ((hint > 0) && (hint < tdef->rows) && (mono_metadata_decode_row_col (tdef, hint - 1, MONO_CONSTANT_PARENT) == index))
4413 if (tdef->base && bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator)) {
4414 return loc.result + 1;
4420 * mono_metadata_events_from_typedef:
4421 * @meta: metadata context
4422 * @index: 0-based index (in the TypeDef table) describing a type
4424 * Returns: the 0-based index in the Event table for the events in the
4425 * type. The last event that belongs to the type (plus 1) is stored
4426 * in the @end_idx pointer.
4429 mono_metadata_events_from_typedef (MonoImage *meta, guint32 index, guint *end_idx)
4433 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_EVENTMAP];
4441 loc.col_idx = MONO_EVENT_MAP_PARENT;
4442 loc.idx = index + 1;
4444 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
4447 start = mono_metadata_decode_row_col (tdef, loc.result, MONO_EVENT_MAP_EVENTLIST);
4448 if (loc.result + 1 < tdef->rows) {
4449 end = mono_metadata_decode_row_col (tdef, loc.result + 1, MONO_EVENT_MAP_EVENTLIST) - 1;
4451 end = meta->tables [MONO_TABLE_EVENT].rows;
4459 * mono_metadata_methods_from_event:
4460 * @meta: metadata context
4461 * @index: 0-based index (in the Event table) describing a event
4463 * Returns: the 0-based index in the MethodDef table for the methods in the
4464 * event. The last method that belongs to the event (plus 1) is stored
4465 * in the @end_idx pointer.
4468 mono_metadata_methods_from_event (MonoImage *meta, guint32 index, guint *end_idx)
4472 guint32 cols [MONO_METHOD_SEMA_SIZE];
4473 MonoTableInfo *msemt = &meta->tables [MONO_TABLE_METHODSEMANTICS];
4479 if (meta->uncompressed_metadata)
4480 index = search_ptr_table (meta, MONO_TABLE_EVENT_POINTER, index + 1) - 1;
4483 loc.col_idx = MONO_METHOD_SEMA_ASSOCIATION;
4484 loc.idx = ((index + 1) << MONO_HAS_SEMANTICS_BITS) | MONO_HAS_SEMANTICS_EVENT; /* Method association coded index */
4486 if (!bsearch (&loc, msemt->base, msemt->rows, msemt->row_size, table_locator))
4491 * We may end up in the middle of the rows...
4494 if (loc.idx == mono_metadata_decode_row_col (msemt, start - 1, MONO_METHOD_SEMA_ASSOCIATION))
4500 while (end < msemt->rows) {
4501 mono_metadata_decode_row (msemt, end, cols, MONO_METHOD_SEMA_SIZE);
4502 if (cols [MONO_METHOD_SEMA_ASSOCIATION] != loc.idx)
4511 * mono_metadata_properties_from_typedef:
4512 * @meta: metadata context
4513 * @index: 0-based index (in the TypeDef table) describing a type
4515 * Returns: the 0-based index in the Property table for the properties in the
4516 * type. The last property that belongs to the type (plus 1) is stored
4517 * in the @end_idx pointer.
4520 mono_metadata_properties_from_typedef (MonoImage *meta, guint32 index, guint *end_idx)
4524 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_PROPERTYMAP];
4532 loc.col_idx = MONO_PROPERTY_MAP_PARENT;
4533 loc.idx = index + 1;
4535 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
4538 start = mono_metadata_decode_row_col (tdef, loc.result, MONO_PROPERTY_MAP_PROPERTY_LIST);
4539 if (loc.result + 1 < tdef->rows) {
4540 end = mono_metadata_decode_row_col (tdef, loc.result + 1, MONO_PROPERTY_MAP_PROPERTY_LIST) - 1;
4542 end = meta->tables [MONO_TABLE_PROPERTY].rows;
4550 * mono_metadata_methods_from_property:
4551 * @meta: metadata context
4552 * @index: 0-based index (in the PropertyDef table) describing a property
4554 * Returns: the 0-based index in the MethodDef table for the methods in the
4555 * property. The last method that belongs to the property (plus 1) is stored
4556 * in the @end_idx pointer.
4559 mono_metadata_methods_from_property (MonoImage *meta, guint32 index, guint *end_idx)
4563 guint32 cols [MONO_METHOD_SEMA_SIZE];
4564 MonoTableInfo *msemt = &meta->tables [MONO_TABLE_METHODSEMANTICS];
4570 if (meta->uncompressed_metadata)
4571 index = search_ptr_table (meta, MONO_TABLE_PROPERTY_POINTER, index + 1) - 1;
4574 loc.col_idx = MONO_METHOD_SEMA_ASSOCIATION;
4575 loc.idx = ((index + 1) << MONO_HAS_SEMANTICS_BITS) | MONO_HAS_SEMANTICS_PROPERTY; /* Method association coded index */
4577 if (!bsearch (&loc, msemt->base, msemt->rows, msemt->row_size, table_locator))
4582 * We may end up in the middle of the rows...
4585 if (loc.idx == mono_metadata_decode_row_col (msemt, start - 1, MONO_METHOD_SEMA_ASSOCIATION))
4591 while (end < msemt->rows) {
4592 mono_metadata_decode_row (msemt, end, cols, MONO_METHOD_SEMA_SIZE);
4593 if (cols [MONO_METHOD_SEMA_ASSOCIATION] != loc.idx)
4602 mono_metadata_implmap_from_method (MonoImage *meta, guint32 method_idx)
4605 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_IMPLMAP];
4610 /* No index translation seems to be needed */
4613 loc.col_idx = MONO_IMPLMAP_MEMBER;
4614 loc.idx = ((method_idx + 1) << MONO_MEMBERFORWD_BITS) | MONO_MEMBERFORWD_METHODDEF;
4616 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
4619 return loc.result + 1;
4623 * @image: context where the image is created
4624 * @type_spec: typespec token
4626 * Creates a MonoType representing the TypeSpec indexed by the @type_spec
4630 mono_type_create_from_typespec (MonoImage *image, guint32 type_spec)
4632 guint32 idx = mono_metadata_token_index (type_spec);
4634 guint32 cols [MONO_TYPESPEC_SIZE];
4637 MonoType *type, *type2;
4639 mono_loader_lock ();
4641 type = g_hash_table_lookup (image->typespec_cache, GUINT_TO_POINTER (type_spec));
4643 mono_loader_unlock ();
4647 t = &image->tables [MONO_TABLE_TYPESPEC];
4649 mono_metadata_decode_row (t, idx-1, cols, MONO_TYPESPEC_SIZE);
4650 ptr = mono_metadata_blob_heap (image, cols [MONO_TYPESPEC_SIGNATURE]);
4651 len = mono_metadata_decode_value (ptr, &ptr);
4653 type = mono_image_alloc0 (image, sizeof (MonoType));
4655 if (*ptr == MONO_TYPE_BYREF) {
4660 if (!do_mono_metadata_parse_type (type, image, NULL, ptr, &ptr)) {
4661 mono_loader_unlock ();
4665 type2 = g_hash_table_lookup (image->typespec_cache, GUINT_TO_POINTER (type_spec));
4668 mono_loader_unlock ();
4672 g_hash_table_insert (image->typespec_cache, GUINT_TO_POINTER (type_spec), type);
4674 mono_loader_unlock ();
4681 mono_mempool_strndup (MonoMemPool *mp, const char *data, guint len)
4685 return g_strndup (data, len);
4686 res = mono_mempool_alloc (mp, len + 1);
4687 memcpy (res, data, len);
4693 mono_metadata_parse_marshal_spec (MonoImage *image, const char *ptr)
4695 return mono_metadata_parse_marshal_spec_with_mempool (NULL, ptr);
4699 mono_metadata_parse_marshal_spec_with_mempool (MonoMemPool *mempool, const char *ptr)
4701 MonoMarshalSpec *res;
4703 const char *start = ptr;
4705 /* fixme: this is incomplete, but I cant find more infos in the specs */
4708 res = mono_mempool_alloc0 (mempool, sizeof (MonoMarshalSpec));
4710 res = g_new0 (MonoMarshalSpec, 1);
4712 len = mono_metadata_decode_value (ptr, &ptr);
4713 res->native = *ptr++;
4715 if (res->native == MONO_NATIVE_LPARRAY) {
4716 res->data.array_data.param_num = -1;
4717 res->data.array_data.num_elem = -1;
4718 res->data.array_data.elem_mult = -1;
4720 if (ptr - start <= len)
4721 res->data.array_data.elem_type = *ptr++;
4722 if (ptr - start <= len)
4723 res->data.array_data.param_num = mono_metadata_decode_value (ptr, &ptr);
4724 if (ptr - start <= len)
4725 res->data.array_data.num_elem = mono_metadata_decode_value (ptr, &ptr);
4726 if (ptr - start <= len) {
4728 * LAMESPEC: Older spec versions say this parameter comes before
4729 * num_elem. Never spec versions don't talk about elem_mult at
4730 * all, but csc still emits it, and it is used to distinguish
4731 * between param_num being 0, and param_num being omitted.
4732 * So if (param_num == 0) && (num_elem > 0), then
4733 * elem_mult == 0 -> the array size is num_elem
4734 * elem_mult == 1 -> the array size is @param_num + num_elem
4736 res->data.array_data.elem_mult = mono_metadata_decode_value (ptr, &ptr);
4740 if (res->native == MONO_NATIVE_BYVALTSTR) {
4741 if (ptr - start <= len)
4742 res->data.array_data.num_elem = mono_metadata_decode_value (ptr, &ptr);
4745 if (res->native == MONO_NATIVE_BYVALARRAY) {
4746 if (ptr - start <= len)
4747 res->data.array_data.num_elem = mono_metadata_decode_value (ptr, &ptr);
4750 if (res->native == MONO_NATIVE_CUSTOM) {
4751 /* skip unused type guid */
4752 len = mono_metadata_decode_value (ptr, &ptr);
4754 /* skip unused native type name */
4755 len = mono_metadata_decode_value (ptr, &ptr);
4757 /* read custom marshaler type name */
4758 len = mono_metadata_decode_value (ptr, &ptr);
4759 res->data.custom_data.custom_name = mono_mempool_strndup (mempool, ptr, len);
4761 /* read cookie string */
4762 len = mono_metadata_decode_value (ptr, &ptr);
4763 res->data.custom_data.cookie = mono_mempool_strndup (mempool, ptr, len);
4766 if (res->native == MONO_NATIVE_SAFEARRAY) {
4767 res->data.safearray_data.elem_type = 0;
4768 res->data.safearray_data.num_elem = 0;
4769 if (ptr - start <= len)
4770 res->data.safearray_data.elem_type = *ptr++;
4771 if (ptr - start <= len)
4772 res->data.safearray_data.num_elem = *ptr++;
4778 mono_metadata_free_marshal_spec (MonoMarshalSpec *spec)
4780 if (spec->native == MONO_NATIVE_CUSTOM) {
4781 g_free (spec->data.custom_data.custom_name);
4782 g_free (spec->data.custom_data.cookie);
4788 * mono_type_to_unmanaged:
4790 * Returns: A MonoMarshalNative enumeration value (MONO_NATIVE_) value
4791 * describing the underlying native reprensetation of the type.
4793 * In addition the value pointed by
4794 * "conv" will contain the kind of marshalling required for this
4795 * particular type one of the MONO_MARSHAL_CONV_ enumeration values.
4798 mono_type_to_unmanaged (MonoType *type, MonoMarshalSpec *mspec, gboolean as_field,
4799 gboolean unicode, MonoMarshalConv *conv)
4801 MonoMarshalConv dummy_conv;
4807 *conv = MONO_MARSHAL_CONV_NONE;
4810 return MONO_NATIVE_UINT;
4814 case MONO_TYPE_BOOLEAN:
4816 switch (mspec->native) {
4817 case MONO_NATIVE_VARIANTBOOL:
4818 *conv = MONO_MARSHAL_CONV_BOOL_VARIANTBOOL;
4819 return MONO_NATIVE_VARIANTBOOL;
4820 case MONO_NATIVE_BOOLEAN:
4821 *conv = MONO_MARSHAL_CONV_BOOL_I4;
4822 return MONO_NATIVE_BOOLEAN;
4823 case MONO_NATIVE_I1:
4824 case MONO_NATIVE_U1:
4825 return mspec->native;
4827 g_error ("cant marshal bool to native type %02x", mspec->native);
4830 *conv = MONO_MARSHAL_CONV_BOOL_I4;
4831 return MONO_NATIVE_BOOLEAN;
4832 case MONO_TYPE_CHAR: return MONO_NATIVE_U2;
4833 case MONO_TYPE_I1: return MONO_NATIVE_I1;
4834 case MONO_TYPE_U1: return MONO_NATIVE_U1;
4835 case MONO_TYPE_I2: return MONO_NATIVE_I2;
4836 case MONO_TYPE_U2: return MONO_NATIVE_U2;
4837 case MONO_TYPE_I4: return MONO_NATIVE_I4;
4838 case MONO_TYPE_U4: return MONO_NATIVE_U4;
4839 case MONO_TYPE_I8: return MONO_NATIVE_I8;
4840 case MONO_TYPE_U8: return MONO_NATIVE_U8;
4841 case MONO_TYPE_R4: return MONO_NATIVE_R4;
4842 case MONO_TYPE_R8: return MONO_NATIVE_R8;
4843 case MONO_TYPE_STRING:
4845 switch (mspec->native) {
4846 case MONO_NATIVE_BSTR:
4847 *conv = MONO_MARSHAL_CONV_STR_BSTR;
4848 return MONO_NATIVE_BSTR;
4849 case MONO_NATIVE_LPSTR:
4850 *conv = MONO_MARSHAL_CONV_STR_LPSTR;
4851 return MONO_NATIVE_LPSTR;
4852 case MONO_NATIVE_LPWSTR:
4853 *conv = MONO_MARSHAL_CONV_STR_LPWSTR;
4854 return MONO_NATIVE_LPWSTR;
4855 case MONO_NATIVE_LPTSTR:
4856 *conv = MONO_MARSHAL_CONV_STR_LPTSTR;
4857 return MONO_NATIVE_LPTSTR;
4858 case MONO_NATIVE_ANSIBSTR:
4859 *conv = MONO_MARSHAL_CONV_STR_ANSIBSTR;
4860 return MONO_NATIVE_ANSIBSTR;
4861 case MONO_NATIVE_TBSTR:
4862 *conv = MONO_MARSHAL_CONV_STR_TBSTR;
4863 return MONO_NATIVE_TBSTR;
4864 case MONO_NATIVE_BYVALTSTR:
4866 *conv = MONO_MARSHAL_CONV_STR_BYVALWSTR;
4868 *conv = MONO_MARSHAL_CONV_STR_BYVALSTR;
4869 return MONO_NATIVE_BYVALTSTR;
4871 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);
4875 *conv = MONO_MARSHAL_CONV_STR_LPWSTR;
4876 return MONO_NATIVE_LPWSTR;
4879 *conv = MONO_MARSHAL_CONV_STR_LPSTR;
4880 return MONO_NATIVE_LPSTR;
4882 case MONO_TYPE_PTR: return MONO_NATIVE_UINT;
4883 case MONO_TYPE_VALUETYPE: /*FIXME*/
4884 if (type->data.klass->enumtype) {
4885 t = mono_class_enum_basetype (type->data.klass)->type;
4888 if (type->data.klass == mono_defaults.handleref_class){
4889 *conv = MONO_MARSHAL_CONV_HANDLEREF;
4890 return MONO_NATIVE_INT;
4892 return MONO_NATIVE_STRUCT;
4893 case MONO_TYPE_SZARRAY:
4894 case MONO_TYPE_ARRAY:
4896 switch (mspec->native) {
4897 case MONO_NATIVE_BYVALARRAY:
4898 if ((type->data.klass->element_class == mono_defaults.char_class) && !unicode)
4899 *conv = MONO_MARSHAL_CONV_ARRAY_BYVALCHARARRAY;
4901 *conv = MONO_MARSHAL_CONV_ARRAY_BYVALARRAY;
4902 return MONO_NATIVE_BYVALARRAY;
4903 case MONO_NATIVE_SAFEARRAY:
4904 *conv = MONO_MARSHAL_CONV_ARRAY_SAVEARRAY;
4905 return MONO_NATIVE_SAFEARRAY;
4906 case MONO_NATIVE_LPARRAY:
4907 *conv = MONO_MARSHAL_CONV_ARRAY_LPARRAY;
4908 return MONO_NATIVE_LPARRAY;
4910 g_error ("cant marshal array as native type %02x", mspec->native);
4914 *conv = MONO_MARSHAL_CONV_ARRAY_LPARRAY;
4915 return MONO_NATIVE_LPARRAY;
4916 case MONO_TYPE_I: return MONO_NATIVE_INT;
4917 case MONO_TYPE_U: return MONO_NATIVE_UINT;
4918 case MONO_TYPE_CLASS:
4919 case MONO_TYPE_OBJECT: {
4920 /* FIXME : we need to handle ArrayList and StringBuilder here, probably */
4922 switch (mspec->native) {
4923 case MONO_NATIVE_STRUCT:
4924 return MONO_NATIVE_STRUCT;
4925 case MONO_NATIVE_CUSTOM:
4926 return MONO_NATIVE_CUSTOM;
4927 case MONO_NATIVE_INTERFACE:
4928 *conv = MONO_MARSHAL_CONV_OBJECT_INTERFACE;
4929 return MONO_NATIVE_INTERFACE;
4930 case MONO_NATIVE_IDISPATCH:
4931 *conv = MONO_MARSHAL_CONV_OBJECT_IDISPATCH;
4932 return MONO_NATIVE_IDISPATCH;
4933 case MONO_NATIVE_IUNKNOWN:
4934 *conv = MONO_MARSHAL_CONV_OBJECT_IUNKNOWN;
4935 return MONO_NATIVE_IUNKNOWN;
4936 case MONO_NATIVE_FUNC:
4937 if (t == MONO_TYPE_CLASS && (type->data.klass == mono_defaults.multicastdelegate_class ||
4938 type->data.klass == mono_defaults.delegate_class ||
4939 type->data.klass->parent == mono_defaults.multicastdelegate_class)) {
4940 *conv = MONO_MARSHAL_CONV_DEL_FTN;
4941 return MONO_NATIVE_FUNC;
4945 g_error ("cant marshal object as native type %02x", mspec->native);
4948 if (t == MONO_TYPE_CLASS && (type->data.klass == mono_defaults.multicastdelegate_class ||
4949 type->data.klass == mono_defaults.delegate_class ||
4950 type->data.klass->parent == mono_defaults.multicastdelegate_class)) {
4951 *conv = MONO_MARSHAL_CONV_DEL_FTN;
4952 return MONO_NATIVE_FUNC;
4954 if (mono_defaults.safehandle_class && type->data.klass == mono_defaults.safehandle_class){
4955 *conv = MONO_MARSHAL_CONV_SAFEHANDLE;
4956 return MONO_NATIVE_INT;
4958 *conv = MONO_MARSHAL_CONV_OBJECT_STRUCT;
4959 return MONO_NATIVE_STRUCT;
4961 case MONO_TYPE_FNPTR: return MONO_NATIVE_FUNC;
4962 case MONO_TYPE_GENERICINST:
4963 type = &type->data.generic_class->container_class->byval_arg;
4966 case MONO_TYPE_TYPEDBYREF:
4968 g_error ("type 0x%02x not handled in marshal", t);
4970 return MONO_NATIVE_MAX;
4974 mono_metadata_get_marshal_info (MonoImage *meta, guint32 idx, gboolean is_field)
4977 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_FIELDMARSHAL];
4983 loc.col_idx = MONO_FIELD_MARSHAL_PARENT;
4984 loc.idx = ((idx + 1) << MONO_HAS_FIELD_MARSHAL_BITS) | (is_field? MONO_HAS_FIELD_MARSHAL_FIELDSREF: MONO_HAS_FIELD_MARSHAL_PARAMDEF);
4986 /* FIXME: Index translation */
4988 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
4991 return mono_metadata_blob_heap (meta, mono_metadata_decode_row_col (tdef, loc.result, MONO_FIELD_MARSHAL_NATIVE_TYPE));
4995 method_from_method_def_or_ref (MonoImage *m, guint32 tok, MonoGenericContext *context)
4997 guint32 idx = tok >> MONO_METHODDEFORREF_BITS;
4999 switch (tok & MONO_METHODDEFORREF_MASK) {
5000 case MONO_METHODDEFORREF_METHODDEF:
5001 return mono_get_method_full (m, MONO_TOKEN_METHOD_DEF | idx, NULL, context);
5002 case MONO_METHODDEFORREF_METHODREF:
5003 return mono_get_method_full (m, MONO_TOKEN_MEMBER_REF | idx, NULL, context);
5005 g_assert_not_reached ();
5010 * mono_class_get_overrides_full:
5012 * Return the method overrides belonging to class @type_token in @overrides, and
5013 * the number of overrides in @num_overrides.
5015 * Returns: TRUE on success, FALSE on failure.
5018 mono_class_get_overrides_full (MonoImage *image, guint32 type_token, MonoMethod ***overrides, gint32 *num_overrides,
5019 MonoGenericContext *generic_context)
5022 MonoTableInfo *tdef = &image->tables [MONO_TABLE_METHODIMPL];
5025 guint32 cols [MONO_METHODIMPL_SIZE];
5026 MonoMethod **result;
5037 loc.col_idx = MONO_METHODIMPL_CLASS;
5038 loc.idx = mono_metadata_token_index (type_token);
5040 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
5046 * We may end up in the middle of the rows...
5049 if (loc.idx == mono_metadata_decode_row_col (tdef, start - 1, MONO_METHODIMPL_CLASS))
5054 while (end < tdef->rows) {
5055 if (loc.idx == mono_metadata_decode_row_col (tdef, end, MONO_METHODIMPL_CLASS))
5061 result = g_new (MonoMethod*, num * 2);
5062 for (i = 0; i < num; ++i) {
5065 mono_metadata_decode_row (tdef, start + i, cols, MONO_METHODIMPL_SIZE);
5066 method = method_from_method_def_or_ref (
5067 image, cols [MONO_METHODIMPL_DECLARATION], generic_context);
5070 result [i * 2] = method;
5071 method = method_from_method_def_or_ref (
5072 image, cols [MONO_METHODIMPL_BODY], generic_context);
5075 result [i * 2 + 1] = method;
5078 *overrides = result;
5080 *num_overrides = num;
5085 * mono_guid_to_string:
5087 * Converts a 16 byte Microsoft GUID to the standard string representation.
5090 mono_guid_to_string (const guint8 *guid)
5092 return g_strdup_printf ("%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
5093 guid[3], guid[2], guid[1], guid[0],
5097 guid[10], guid[11], guid[12], guid[13], guid[14], guid[15]);
5101 get_constraints (MonoImage *image, int owner, MonoClass ***constraints, MonoGenericContainer *container)
5103 MonoTableInfo *tdef = &image->tables [MONO_TABLE_GENERICPARAMCONSTRAINT];
5104 guint32 cols [MONO_GENPARCONSTRAINT_SIZE];
5105 guint32 i, token, found;
5106 MonoClass *klass, **res;
5107 GList *cons = NULL, *tmp;
5108 MonoGenericContext *context = &container->context;
5110 *constraints = NULL;
5112 for (i = 0; i < tdef->rows; ++i) {
5113 mono_metadata_decode_row (tdef, i, cols, MONO_GENPARCONSTRAINT_SIZE);
5114 if (cols [MONO_GENPARCONSTRAINT_GENERICPAR] == owner) {
5115 token = mono_metadata_token_from_dor (cols [MONO_GENPARCONSTRAINT_CONSTRAINT]);
5116 klass = mono_class_get_full (image, token, context);
5117 cons = g_list_append (cons, klass);
5120 /* contiguous list finished */
5127 res = g_new0 (MonoClass*, found + 1);
5128 for (i = 0, tmp = cons; i < found; ++i, tmp = tmp->next) {
5129 res [i] = tmp->data;
5137 * mono_metadata_get_generic_param_row:
5140 * @token: TypeOrMethodDef token, owner for GenericParam
5141 * @owner: coded token, set on return
5143 * Returns: 1-based row-id in the GenericParam table whose
5144 * owner is @token. 0 if not found.
5147 mono_metadata_get_generic_param_row (MonoImage *image, guint32 token, guint32 *owner)
5149 MonoTableInfo *tdef = &image->tables [MONO_TABLE_GENERICPARAM];
5156 if (mono_metadata_token_table (token) == MONO_TABLE_TYPEDEF)
5157 *owner = MONO_TYPEORMETHOD_TYPE;
5158 else if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
5159 *owner = MONO_TYPEORMETHOD_METHOD;
5161 g_error ("wrong token %x to get_generic_param_row", token);
5164 *owner |= mono_metadata_token_index (token) << MONO_TYPEORMETHOD_BITS;
5167 loc.col_idx = MONO_GENERICPARAM_OWNER;
5170 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
5173 /* Find the first entry by searching backwards */
5174 while ((loc.result > 0) && (mono_metadata_decode_row_col (tdef, loc.result - 1, MONO_GENERICPARAM_OWNER) == loc.idx))
5177 return loc.result + 1;
5181 mono_metadata_has_generic_params (MonoImage *image, guint32 token)
5184 return mono_metadata_get_generic_param_row (image, token, &owner);
5188 * mono_metadata_load_generic_param_constraints:
5190 * Load the generic parameter constraints for the newly created generic type or method
5191 * represented by @token and @container. The @container is the new container which has
5192 * been returned by a call to mono_metadata_load_generic_params() with this @token.
5195 mono_metadata_load_generic_param_constraints (MonoImage *image, guint32 token,
5196 MonoGenericContainer *container)
5198 guint32 start_row, i, owner;
5199 if (! (start_row = mono_metadata_get_generic_param_row (image, token, &owner)))
5201 for (i = 0; i < container->type_argc; i++)
5202 get_constraints (image, start_row + i, &container->type_params [i].constraints, container);
5206 * mono_metadata_load_generic_params:
5208 * Load the type parameters from the type or method definition @token.
5210 * Use this method after parsing a type or method definition to figure out whether it's a generic
5211 * type / method. When parsing a method definition, @parent_container points to the generic container
5212 * of the current class, if any.
5214 * Note: This method does not load the constraints: for typedefs, this has to be done after fully
5215 * creating the type.
5217 * Returns: NULL if @token is not a generic type or method definition or the new generic container.
5219 * LOCKING: Acquires the loader lock
5222 MonoGenericContainer *
5223 mono_metadata_load_generic_params (MonoImage *image, guint32 token, MonoGenericContainer *parent_container)
5225 MonoTableInfo *tdef = &image->tables [MONO_TABLE_GENERICPARAM];
5226 guint32 cols [MONO_GENERICPARAM_SIZE];
5227 guint32 i, owner = 0, n;
5228 MonoGenericContainer *container;
5229 MonoGenericParam *params;
5230 MonoGenericContext *context;
5232 if (!(i = mono_metadata_get_generic_param_row (image, token, &owner)))
5234 mono_metadata_decode_row (tdef, i - 1, cols, MONO_GENERICPARAM_SIZE);
5237 container = mono_image_alloc0_lock (image, sizeof (MonoGenericContainer));
5240 params = g_realloc (params, sizeof (MonoGenericParam) * n);
5241 memset (¶ms [n - 1], 0, sizeof (MonoGenericParam));
5242 params [n - 1].owner = container;
5243 params [n - 1].flags = cols [MONO_GENERICPARAM_FLAGS];
5244 params [n - 1].num = cols [MONO_GENERICPARAM_NUMBER];
5245 params [n - 1].name = mono_metadata_string_heap (image, cols [MONO_GENERICPARAM_NAME]);
5246 if (++i > tdef->rows)
5248 mono_metadata_decode_row (tdef, i - 1, cols, MONO_GENERICPARAM_SIZE);
5249 } while (cols [MONO_GENERICPARAM_OWNER] == owner);
5251 container->type_argc = n;
5252 container->type_params = mono_image_alloc0_lock (image, sizeof (MonoGenericParam) * n);
5253 memcpy (container->type_params, params, sizeof (MonoGenericParam) * n);
5255 container->parent = parent_container;
5257 if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
5258 container->is_method = 1;
5260 g_assert (container->parent == NULL || container->is_method);
5262 context = &container->context;
5263 if (container->is_method) {
5264 context->class_inst = container->parent ? container->parent->context.class_inst : NULL;
5265 context->method_inst = mono_get_shared_generic_inst (container);
5267 context->class_inst = mono_get_shared_generic_inst (container);
5274 mono_get_shared_generic_inst (MonoGenericContainer *container)
5276 MonoType **type_argv;
5278 MonoGenericInst *nginst;
5281 type_argv = g_new0 (MonoType *, container->type_argc);
5282 helper = g_new0 (MonoType, container->type_argc);
5284 for (i = 0; i < container->type_argc; i++) {
5285 MonoType *t = &helper [i];
5287 t->type = container->is_method ? MONO_TYPE_MVAR : MONO_TYPE_VAR;
5288 t->data.generic_param = &container->type_params [i];
5293 nginst = mono_metadata_get_generic_inst (container->type_argc, type_argv);
5302 mono_type_is_byref (MonoType *type)
5308 mono_type_get_type (MonoType *type)
5313 /* For MONO_TYPE_FNPTR */
5314 MonoMethodSignature*
5315 mono_type_get_signature (MonoType *type)
5317 return type->data.method;
5320 /* For MONO_TYPE_CLASS, VALUETYPE */
5322 mono_type_get_class (MonoType *type)
5324 return type->data.klass;
5327 /* For MONO_TYPE_ARRAY */
5329 mono_type_get_array_type (MonoType *type)
5331 return type->data.array;
5334 /* For MONO_TYPE_PTR */
5336 mono_type_get_ptr_type (MonoType *type)
5338 return type->data.type;
5342 mono_type_get_modifiers (MonoType *type, gboolean *is_required, gpointer *iter)
5344 /* FIXME: implement */
5349 mono_signature_get_return_type (MonoMethodSignature *sig)
5355 mono_signature_get_params (MonoMethodSignature *sig, gpointer *iter)
5361 /* start from the first */
5362 if (sig->param_count) {
5363 *iter = &sig->params [0];
5364 return sig->params [0];
5372 if (type < &sig->params [sig->param_count]) {
5380 mono_signature_get_param_count (MonoMethodSignature *sig)
5382 return sig->param_count;
5386 mono_signature_get_call_conv (MonoMethodSignature *sig)
5388 return sig->call_convention;
5392 mono_signature_vararg_start (MonoMethodSignature *sig)
5394 return sig->sentinelpos;
5398 mono_signature_is_instance (MonoMethodSignature *sig)
5400 return sig->hasthis;
5404 mono_signature_explicit_this (MonoMethodSignature *sig)
5406 return sig->explicit_this;
5409 /* for use with allocated memory blocks (assumes alignment is to 8 bytes) */
5411 mono_aligned_addr_hash (gconstpointer ptr)
5413 return GPOINTER_TO_UINT (ptr) >> 3;
5417 * If @field belongs to an inflated generic class, return the corresponding field of the
5418 * generic type definition class.
5421 mono_metadata_get_corresponding_field_from_generic_type_definition (MonoClassField *field)
5426 if (!field->parent->generic_class)
5429 gtd = field->parent->generic_class->container_class;
5430 offset = field - field->parent->fields;
5431 return gtd->fields + offset;
5435 * If @event belongs to an inflated generic class, return the corresponding event of the
5436 * generic type definition class.
5439 mono_metadata_get_corresponding_event_from_generic_type_definition (MonoEvent *event)
5444 if (!event->parent->generic_class)
5447 gtd = event->parent->generic_class->container_class;
5448 offset = event - event->parent->ext->events;
5449 return gtd->ext->events + offset;
5453 * If @property belongs to an inflated generic class, return the corresponding property of the
5454 * generic type definition class.
5457 mono_metadata_get_corresponding_property_from_generic_type_definition (MonoProperty *property)
5462 if (!property->parent->generic_class)
5465 gtd = property->parent->generic_class->container_class;
5466 offset = property - property->parent->ext->properties;
5467 return gtd->ext->properties + offset;