2 * metadata.c: Routines for accessing the metadata
5 * Miguel de Icaza (miguel@ximian.com)
6 * Paolo Molaro (lupus@ximian.com)
8 * (C) 2001-2002 Ximian, Inc.
16 #include "tabledefs.h"
17 #include "mono-endian.h"
19 #include "tokentype.h"
23 static void do_mono_metadata_parse_type (MonoType *type, MonoImage *m, const char *ptr, const char **rptr);
26 * Encoding of the "description" argument:
28 * identifier [CODE ARG]
30 * If CODE is ':', then a lookup on table ARG is performed
31 * If CODE is '=', then a lookup in the aliased-table ARG is performed
32 * If CODE is '#', then this encodes a flag, ARG is the flag name.
34 * Aliased table for example is `CustomAttributeType' which depending on the
35 * information might refer to different tables.
38 const static MonoMetaTable AssemblySchema [] = {
39 { MONO_MT_UINT32, "HashId" },
40 { MONO_MT_UINT16, "Major" },
41 { MONO_MT_UINT16, "Minor" },
42 { MONO_MT_UINT16, "BuildNumber" },
43 { MONO_MT_UINT16, "RevisionNumber" },
44 { MONO_MT_UINT32, "Flags" },
45 { MONO_MT_BLOB_IDX, "PublicKey" },
46 { MONO_MT_STRING_IDX, "Name" },
47 { MONO_MT_STRING_IDX, "Culture" },
51 const static MonoMetaTable AssemblyOSSchema [] = {
52 { MONO_MT_UINT32, "OSPlatformID" },
53 { MONO_MT_UINT32, "OSMajor" },
54 { MONO_MT_UINT32, "OSMinor" },
58 const static MonoMetaTable AssemblyProcessorSchema [] = {
59 { MONO_MT_UINT32, "Processor" },
63 const static MonoMetaTable AssemblyRefSchema [] = {
64 { MONO_MT_UINT16, "Major" },
65 { MONO_MT_UINT16, "Minor" },
66 { MONO_MT_UINT16, "Build" },
67 { MONO_MT_UINT16, "Revision" },
68 { MONO_MT_UINT32, "Flags" },
69 { MONO_MT_BLOB_IDX, "PublicKeyOrToken" },
70 { MONO_MT_STRING_IDX, "Name" },
71 { MONO_MT_STRING_IDX, "Culture" },
72 { MONO_MT_BLOB_IDX, "HashValue" },
76 const static MonoMetaTable AssemblyRefOSSchema [] = {
77 { MONO_MT_UINT32, "OSPlatformID" },
78 { MONO_MT_UINT32, "OSMajorVersion" },
79 { MONO_MT_UINT32, "OSMinorVersion" },
80 { MONO_MT_TABLE_IDX, "AssemblyRef:AssemblyRef" },
84 const static MonoMetaTable AssemblyRefProcessorSchema [] = {
85 { MONO_MT_UINT32, "Processor" },
86 { MONO_MT_TABLE_IDX, "AssemblyRef:AssemblyRef" },
90 const static MonoMetaTable ClassLayoutSchema [] = {
91 { MONO_MT_UINT16, "PackingSize" },
92 { MONO_MT_UINT32, "ClassSize" },
93 { MONO_MT_TABLE_IDX, "Parent:TypeDef" },
97 const static MonoMetaTable ConstantSchema [] = {
98 { MONO_MT_UINT8, "Type" },
99 { MONO_MT_UINT8, "PaddingZero" },
100 { MONO_MT_CONST_IDX, "Parent" },
101 { MONO_MT_BLOB_IDX, "Value" },
102 { MONO_MT_END, NULL }
105 const static MonoMetaTable CustomAttributeSchema [] = {
106 { MONO_MT_HASCAT_IDX, "Parent" },
107 { MONO_MT_CAT_IDX, "Type" },
108 { MONO_MT_BLOB_IDX, "Value" },
109 { MONO_MT_END, NULL }
112 const static MonoMetaTable DeclSecuritySchema [] = {
113 { MONO_MT_UINT16, "Action" },
114 { MONO_MT_HASDEC_IDX, "Parent" },
115 { MONO_MT_BLOB_IDX, "PermissionSet" },
116 { MONO_MT_END, NULL }
119 const static MonoMetaTable EventMapSchema [] = {
120 { MONO_MT_TABLE_IDX, "Parent:TypeDef" },
121 { MONO_MT_TABLE_IDX, "EventList:Event" },
122 { MONO_MT_END, NULL }
125 const static MonoMetaTable EventSchema [] = {
126 { MONO_MT_UINT16, "EventFlags#EventAttribute" },
127 { MONO_MT_STRING_IDX, "Name" },
128 { MONO_MT_TABLE_IDX, "EventType" }, /* TypeDef or TypeRef */
129 { MONO_MT_END, NULL }
132 const static MonoMetaTable ExportedTypeSchema [] = {
133 { MONO_MT_UINT32, "Flags" },
134 { MONO_MT_TABLE_IDX, "TypeDefId" },
135 { MONO_MT_STRING_IDX, "TypeName" },
136 { MONO_MT_STRING_IDX, "TypeNameSpace" },
137 { MONO_MT_IMPL_IDX, "Implementation" },
138 { MONO_MT_END, NULL }
141 const static MonoMetaTable FieldSchema [] = {
142 { MONO_MT_UINT16, "Flags" },
143 { MONO_MT_STRING_IDX, "Name" },
144 { MONO_MT_BLOB_IDX, "Signature" },
145 { MONO_MT_END, NULL }
147 const static MonoMetaTable FieldLayoutSchema [] = {
148 { MONO_MT_UINT32, "Offset" },
149 { MONO_MT_TABLE_IDX, "Field:Field" },
150 { MONO_MT_END, NULL }
153 const static MonoMetaTable FieldMarshalSchema [] = {
154 { MONO_MT_HFM_IDX, "Parent" },
155 { MONO_MT_BLOB_IDX, "NativeType" },
156 { MONO_MT_END, NULL }
158 const static MonoMetaTable FieldRVASchema [] = {
159 { MONO_MT_UINT32, "RVA" },
160 { MONO_MT_TABLE_IDX, "Field:Field" },
161 { MONO_MT_END, NULL }
164 const static MonoMetaTable FileSchema [] = {
165 { MONO_MT_UINT32, "Flags" },
166 { MONO_MT_STRING_IDX, "Name" },
167 { MONO_MT_BLOB_IDX, "Value" },
168 { MONO_MT_END, NULL }
171 const static MonoMetaTable ImplMapSchema [] = {
172 { MONO_MT_UINT16, "MappingFlag" },
173 { MONO_MT_MF_IDX, "MemberForwarded" },
174 { MONO_MT_STRING_IDX, "ImportName" },
175 { MONO_MT_TABLE_IDX, "ImportScope:ModuleRef" },
176 { MONO_MT_END, NULL }
179 const static MonoMetaTable InterfaceImplSchema [] = {
180 { MONO_MT_TABLE_IDX, "Class:TypeDef" },
181 { MONO_MT_TDOR_IDX, "Interface=TypeDefOrRef" },
182 { MONO_MT_END, NULL }
185 const static MonoMetaTable ManifestResourceSchema [] = {
186 { MONO_MT_UINT32, "Offset" },
187 { MONO_MT_UINT32, "Flags" },
188 { MONO_MT_STRING_IDX, "Name" },
189 { MONO_MT_IMPL_IDX, "Implementation" },
190 { MONO_MT_END, NULL }
193 const static MonoMetaTable MemberRefSchema [] = {
194 { MONO_MT_MRP_IDX, "Class" },
195 { MONO_MT_STRING_IDX, "Name" },
196 { MONO_MT_BLOB_IDX, "Signature" },
197 { MONO_MT_END, NULL }
200 const static MonoMetaTable MethodSchema [] = {
201 { MONO_MT_UINT32, "RVA" },
202 { MONO_MT_UINT16, "ImplFlags#MethodImplAttributes" },
203 { MONO_MT_UINT16, "Flags#MethodAttribute" },
204 { MONO_MT_STRING_IDX, "Name" },
205 { MONO_MT_BLOB_IDX, "Signature" },
206 { MONO_MT_TABLE_IDX, "ParamList:Param" },
207 { MONO_MT_END, NULL }
210 const static MonoMetaTable MethodImplSchema [] = {
211 { MONO_MT_TABLE_IDX, "Class:TypeDef" },
212 { MONO_MT_MDOR_IDX, "MethodBody" },
213 { MONO_MT_MDOR_IDX, "MethodDeclaration" },
214 { MONO_MT_END, NULL }
217 const static MonoMetaTable MethodSemanticsSchema [] = {
218 { MONO_MT_UINT16, "MethodSemantic" },
219 { MONO_MT_TABLE_IDX, "Method:Method" },
220 { MONO_MT_HS_IDX, "Association" },
221 { MONO_MT_END, NULL }
224 const static MonoMetaTable ModuleSchema [] = {
225 { MONO_MT_UINT16, "Generation" },
226 { MONO_MT_STRING_IDX, "Name" },
227 { MONO_MT_GUID_IDX, "MVID" },
228 { MONO_MT_GUID_IDX, "EncID" },
229 { MONO_MT_GUID_IDX, "EncBaseID" },
230 { MONO_MT_END, NULL }
233 const static MonoMetaTable ModuleRefSchema [] = {
234 { MONO_MT_STRING_IDX, "Name" },
235 { MONO_MT_END, NULL }
238 const static MonoMetaTable NestedClassSchema [] = {
239 { MONO_MT_TABLE_IDX, "NestedClass:TypeDef" },
240 { MONO_MT_TABLE_IDX, "EnclosingClass:TypeDef" },
241 { MONO_MT_END, NULL }
244 const static MonoMetaTable ParamSchema [] = {
245 { MONO_MT_UINT16, "Flags" },
246 { MONO_MT_UINT16, "Sequence" },
247 { MONO_MT_STRING_IDX, "Name" },
248 { MONO_MT_END, NULL }
251 const static MonoMetaTable PropertySchema [] = {
252 { MONO_MT_UINT16, "Flags" },
253 { MONO_MT_STRING_IDX, "Name" },
254 { MONO_MT_BLOB_IDX, "Type" },
255 { MONO_MT_END, NULL }
258 const static MonoMetaTable PropertyMapSchema [] = {
259 { MONO_MT_TABLE_IDX, "Parent:TypeDef" },
260 { MONO_MT_TABLE_IDX, "PropertyList:Property" },
261 { MONO_MT_END, NULL }
264 const static MonoMetaTable StandaloneSigSchema [] = {
265 { MONO_MT_BLOB_IDX, "Signature" },
266 { MONO_MT_END, NULL }
269 const static MonoMetaTable TypeDefSchema [] = {
270 { MONO_MT_UINT32, "Flags" },
271 { MONO_MT_STRING_IDX, "Name" },
272 { MONO_MT_STRING_IDX, "Namespace" },
273 { MONO_MT_TDOR_IDX, "Extends" },
274 { MONO_MT_TABLE_IDX, "FieldList:Field" },
275 { MONO_MT_TABLE_IDX, "MethodList:Method" },
276 { MONO_MT_END, NULL }
279 const static MonoMetaTable TypeRefSchema [] = {
280 { MONO_MT_RS_IDX, "ResolutionScope=ResolutionScope" },
281 { MONO_MT_STRING_IDX, "Name" },
282 { MONO_MT_STRING_IDX, "Namespace" },
283 { MONO_MT_END, NULL }
286 const static MonoMetaTable TypeSpecSchema [] = {
287 { MONO_MT_BLOB_IDX, "Signature" },
288 { MONO_MT_END, NULL }
291 const static MonoMetaTable GenericParamSchema [] = {
292 { MONO_MT_UINT16, "Number" },
293 { MONO_MT_UINT16, "Flags" },
294 { MONO_MT_TABLE_IDX, "Owner" }, /* TypeDef or MethodDef */
295 { MONO_MT_STRING_IDX, "Name" },
297 /* soon to be removed */
298 { MONO_MT_TABLE_IDX, "Kind" },
299 { MONO_MT_TABLE_IDX, "DeprecatedConstraint" },
301 { MONO_MT_END, NULL }
304 const static MonoMetaTable MethodSpecSchema [] = {
305 { MONO_MT_MDOR_IDX, "Method" },
306 { MONO_MT_BLOB_IDX, "Signature" },
307 { MONO_MT_END, NULL }
310 const static MonoMetaTable GenericParamConstraintSchema [] = {
311 { MONO_MT_TABLE_IDX, "GenericParam" },
312 { MONO_MT_TDOR_IDX, "Constraint" },
313 { MONO_MT_END, NULL }
316 const static struct {
317 const MonoMetaTable *table;
320 /* 0 */ { ModuleSchema, "Module" },
321 /* 1 */ { TypeRefSchema, "TypeRef" },
322 /* 2 */ { TypeDefSchema, "TypeDef" },
323 /* 3 */ { NULL, NULL },
324 /* 4 */ { FieldSchema, "Field" },
325 /* 5 */ { NULL, NULL },
326 /* 6 */ { MethodSchema, "Method" },
327 /* 7 */ { NULL, NULL },
328 /* 8 */ { ParamSchema, "Param" },
329 /* 9 */ { InterfaceImplSchema, "InterfaceImpl" },
330 /* A */ { MemberRefSchema, "MemberRef" },
331 /* B */ { ConstantSchema, "Constant" },
332 /* C */ { CustomAttributeSchema, "CustomAttribute" },
333 /* D */ { FieldMarshalSchema, "FieldMarshal" },
334 /* E */ { DeclSecuritySchema, "DeclSecurity" },
335 /* F */ { ClassLayoutSchema, "ClassLayout" },
336 /* 10 */ { FieldLayoutSchema, "FieldLayout" },
337 /* 11 */ { StandaloneSigSchema, "StandaloneSig" },
338 /* 12 */ { EventMapSchema, "EventMap" },
339 /* 13 */ { NULL, NULL },
340 /* 14 */ { EventSchema, "Event" },
341 /* 15 */ { PropertyMapSchema, "PropertyMap" },
342 /* 16 */ { NULL, NULL },
343 /* 17 */ { PropertySchema, "PropertyTable" },
344 /* 18 */ { MethodSemanticsSchema, "MethodSemantics" },
345 /* 19 */ { MethodImplSchema, "MethodImpl" },
346 /* 1A */ { ModuleRefSchema, "ModuleRef" },
347 /* 1B */ { TypeSpecSchema, "TypeSpec" },
348 /* 1C */ { ImplMapSchema, "ImplMap" },
349 /* 1D */ { FieldRVASchema, "FieldRVA" },
350 /* 1E */ { NULL, NULL },
351 /* 1F */ { NULL, NULL },
352 /* 20 */ { AssemblySchema, "Assembly" },
353 /* 21 */ { AssemblyProcessorSchema, "AssemblyProcessor" },
354 /* 22 */ { AssemblyOSSchema, "AssemblyOS" },
355 /* 23 */ { AssemblyRefSchema, "AssemblyRef" },
356 /* 24 */ { AssemblyRefProcessorSchema, "AssemblyRefProcessor" },
357 /* 25 */ { AssemblyRefOSSchema, "AssemblyRefOS" },
358 /* 26 */ { FileSchema, "File" },
359 /* 27 */ { ExportedTypeSchema, "ExportedType" },
360 /* 28 */ { ManifestResourceSchema, "ManifestResource" },
361 /* 29 */ { NestedClassSchema, "NestedClass" },
362 /* 2A */ { GenericParamSchema, "GenericParam" },
363 /* 2B */ { MethodSpecSchema, "MethodSpec" },
364 /* 2C */ { GenericParamConstraintSchema, "GenericParamConstraint" },
368 * mono_meta_table_name:
369 * @table: table index
371 * Returns the name for the @table index
374 mono_meta_table_name (int table)
376 if ((table < 0) || (table > 0x2c))
379 return tables [table].name;
382 /* The guy who wrote the spec for this should not be allowed near a
385 If e is a coded token(see clause 23.1.7) that points into table ti out of n possible tables t0, .. tn-1,
386 then it is stored as e << (log n) & tag{ t0, .. tn-1}[ ti] using 2 bytes if the maximum number of
387 rows of tables t0, ..tn-1, is less than 2^16 - (log n), and using 4 bytes otherwise. The family of
388 finite maps tag{ t0, ..tn-1} is defined below. Note that to decode a physical row, you need the
389 inverse of this mapping.
392 #define rtsize(s,b) (((s) < (1 << (b)) ? 2 : 4))
393 #define idx_size(tableidx) (meta->tables [(tableidx)].rows < 65536 ? 2 : 4)
395 /* Reference: Partition II - 23.2.6 */
397 * mono_metadata_compute_size:
398 * @meta: metadata context
399 * @tableindex: metadata table number
400 * @result_bitfield: pointer to guint32 where to store additional info
402 * mono_metadata_compute_size() computes the lenght in bytes of a single
403 * row in a metadata table. The size of each column is encoded in the
404 * @result_bitfield return value along with the number of columns in the table.
405 * the resulting bitfield should be handed to the mono_metadata_table_size()
406 * and mono_metadata_table_count() macros.
409 mono_metadata_compute_size (MonoImage *meta, int tableindex, guint32 *result_bitfield)
411 guint32 bitfield = 0;
412 int size = 0, field_size;
415 const MonoMetaTable *table = tables [tableindex].table;
417 for (i = 0; (code = table [i].code) != MONO_MT_END; i++){
420 field_size = 4; break;
423 field_size = 2; break;
426 field_size = 1; break;
428 case MONO_MT_BLOB_IDX:
429 field_size = meta->idx_blob_wide ? 4 : 2; break;
431 case MONO_MT_STRING_IDX:
432 field_size = meta->idx_string_wide ? 4 : 2; break;
434 case MONO_MT_GUID_IDX:
435 field_size = meta->idx_guid_wide ? 4 : 2; break;
437 case MONO_MT_TABLE_IDX:
438 /* Uhm, a table index can point to other tables besides the current one
439 * so, it's not correct to use the rowcount of the current table to
440 * get the size for this column - lupus
442 switch (tableindex) {
443 case MONO_TABLE_ASSEMBLYREFOS:
445 field_size = idx_size (MONO_TABLE_ASSEMBLYREF); break;
446 case MONO_TABLE_ASSEMBLYPROCESSOR:
448 field_size = idx_size (MONO_TABLE_ASSEMBLYREF); break;
449 case MONO_TABLE_CLASSLAYOUT:
451 field_size = idx_size (MONO_TABLE_TYPEDEF); break;
452 case MONO_TABLE_EVENTMAP:
453 g_assert (i == 0 || i == 1);
454 field_size = i ? idx_size (MONO_TABLE_EVENT):
455 idx_size(MONO_TABLE_TYPEDEF);
457 case MONO_TABLE_EVENT:
459 field_size = MAX (idx_size (MONO_TABLE_TYPEDEF), idx_size(MONO_TABLE_TYPEREF));
460 field_size = MAX (field_size, idx_size(MONO_TABLE_TYPESPEC));
462 case MONO_TABLE_EXPORTEDTYPE:
464 /* the index is in another metadata file, so it must be 4 */
465 field_size = 4; break;
466 case MONO_TABLE_FIELDLAYOUT:
468 field_size = idx_size (MONO_TABLE_FIELD); break;
469 case MONO_TABLE_FIELDRVA:
471 field_size = idx_size (MONO_TABLE_FIELD); break;
472 case MONO_TABLE_IMPLMAP:
474 field_size = idx_size (MONO_TABLE_MODULEREF); break;
475 case MONO_TABLE_INTERFACEIMPL:
477 field_size = idx_size (MONO_TABLE_TYPEDEF); break;
478 case MONO_TABLE_METHOD:
480 field_size = idx_size (MONO_TABLE_PARAM); break;
481 case MONO_TABLE_METHODIMPL:
483 field_size = idx_size (MONO_TABLE_TYPEDEF); break;
484 case MONO_TABLE_METHODSEMANTICS:
486 field_size = idx_size (MONO_TABLE_METHOD); break;
487 case MONO_TABLE_NESTEDCLASS:
488 g_assert (i == 0 || i == 1);
489 field_size = idx_size (MONO_TABLE_TYPEDEF); break;
490 case MONO_TABLE_PROPERTYMAP:
491 g_assert (i == 0 || i == 1);
492 field_size = i ? idx_size (MONO_TABLE_PROPERTY):
493 idx_size(MONO_TABLE_TYPEDEF);
495 case MONO_TABLE_TYPEDEF:
496 g_assert (i == 4 || i == 5);
497 field_size = i == 4 ? idx_size (MONO_TABLE_FIELD):
498 idx_size(MONO_TABLE_METHOD);
499 case MONO_TABLE_GENERICPARAM:
500 g_assert (i == 2 || i == 4 || i == 5);
502 field_size = MAX (idx_size (MONO_TABLE_METHOD), idx_size (MONO_TABLE_TYPEDEF));
504 field_size = idx_size (MONO_TABLE_TYPEDEF);
506 field_size = idx_size (MONO_TABLE_TYPEDEF);
509 case MONO_TABLE_GENERICPARAMCONSTRAINT:
511 field_size = idx_size (MONO_TABLE_GENERICPARAM);
515 g_assert_not_reached ();
517 if (tableindex != MONO_TABLE_EXPORTEDTYPE && field_size != idx_size (tableindex))
518 g_warning ("size changed (%d to %d)", idx_size (tableindex), field_size);
523 * HasConstant: ParamDef, FieldDef, Property
525 case MONO_MT_CONST_IDX:
526 n = MAX (meta->tables [MONO_TABLE_PARAM].rows,
527 meta->tables [MONO_TABLE_FIELD].rows);
528 n = MAX (n, meta->tables [MONO_TABLE_PROPERTY].rows);
530 /* 2 bits to encode tag */
531 field_size = rtsize (n, 16-2);
535 * HasCustomAttribute: points to any table but
538 case MONO_MT_HASCAT_IDX:
540 * We believe that since the signature and
541 * permission are indexing the Blob heap,
542 * we should consider the blob size first
544 /* I'm not a believer - lupus
545 if (meta->idx_blob_wide){
550 n = MAX (meta->tables [MONO_TABLE_METHOD].rows,
551 meta->tables [MONO_TABLE_FIELD].rows);
552 n = MAX (n, meta->tables [MONO_TABLE_TYPEREF].rows);
553 n = MAX (n, meta->tables [MONO_TABLE_TYPEDEF].rows);
554 n = MAX (n, meta->tables [MONO_TABLE_PARAM].rows);
555 n = MAX (n, meta->tables [MONO_TABLE_INTERFACEIMPL].rows);
556 n = MAX (n, meta->tables [MONO_TABLE_MEMBERREF].rows);
557 n = MAX (n, meta->tables [MONO_TABLE_MODULE].rows);
558 n = MAX (n, meta->tables [MONO_TABLE_DECLSECURITY].rows);
559 n = MAX (n, meta->tables [MONO_TABLE_PROPERTY].rows);
560 n = MAX (n, meta->tables [MONO_TABLE_EVENT].rows);
561 n = MAX (n, meta->tables [MONO_TABLE_STANDALONESIG].rows);
562 n = MAX (n, meta->tables [MONO_TABLE_MODULEREF].rows);
563 n = MAX (n, meta->tables [MONO_TABLE_TYPESPEC].rows);
564 n = MAX (n, meta->tables [MONO_TABLE_ASSEMBLY].rows);
565 n = MAX (n, meta->tables [MONO_TABLE_ASSEMBLYREF].rows);
566 n = MAX (n, meta->tables [MONO_TABLE_FILE].rows);
567 n = MAX (n, meta->tables [MONO_TABLE_EXPORTEDTYPE].rows);
568 n = MAX (n, meta->tables [MONO_TABLE_MANIFESTRESOURCE].rows);
570 /* 5 bits to encode */
571 field_size = rtsize (n, 16-5);
575 * CustomAttributeType: TypeDef, TypeRef, MethodDef,
576 * MemberRef and String.
578 case MONO_MT_CAT_IDX:
579 /* String is a heap, if it is wide, we know the size */
581 if (meta->idx_string_wide){
586 n = MAX (meta->tables [MONO_TABLE_TYPEREF].rows,
587 meta->tables [MONO_TABLE_TYPEDEF].rows);
588 n = MAX (n, meta->tables [MONO_TABLE_METHOD].rows);
589 n = MAX (n, meta->tables [MONO_TABLE_MEMBERREF].rows);
591 /* 3 bits to encode */
592 field_size = rtsize (n, 16-3);
596 * HasDeclSecurity: Typedef, MethodDef, Assembly
598 case MONO_MT_HASDEC_IDX:
599 n = MAX (meta->tables [MONO_TABLE_TYPEDEF].rows,
600 meta->tables [MONO_TABLE_METHOD].rows);
601 n = MAX (n, meta->tables [MONO_TABLE_ASSEMBLY].rows);
603 /* 2 bits to encode */
604 field_size = rtsize (n, 16-2);
608 * Implementation: File, AssemblyRef, ExportedType
610 case MONO_MT_IMPL_IDX:
611 n = MAX (meta->tables [MONO_TABLE_FILE].rows,
612 meta->tables [MONO_TABLE_ASSEMBLYREF].rows);
613 n = MAX (n, meta->tables [MONO_TABLE_EXPORTEDTYPE].rows);
615 /* 2 bits to encode tag */
616 field_size = rtsize (n, 16-2);
620 * HasFieldMarshall: FieldDef, ParamDef
622 case MONO_MT_HFM_IDX:
623 n = MAX (meta->tables [MONO_TABLE_FIELD].rows,
624 meta->tables [MONO_TABLE_PARAM].rows);
626 /* 1 bit used to encode tag */
627 field_size = rtsize (n, 16-1);
631 * MemberForwarded: FieldDef, MethodDef
634 n = MAX (meta->tables [MONO_TABLE_FIELD].rows,
635 meta->tables [MONO_TABLE_METHOD].rows);
637 /* 1 bit used to encode tag */
638 field_size = rtsize (n, 16-1);
642 * TypeDefOrRef: TypeDef, ParamDef, TypeSpec
644 * It is TypeDef, _TypeRef_, TypeSpec, instead.
646 case MONO_MT_TDOR_IDX:
647 n = MAX (meta->tables [MONO_TABLE_TYPEDEF].rows,
648 meta->tables [MONO_TABLE_TYPEREF].rows);
649 n = MAX (n, meta->tables [MONO_TABLE_TYPESPEC].rows);
651 /* 2 bits to encode */
652 field_size = rtsize (n, 16-2);
656 * MemberRefParent: TypeDef, TypeRef, MethodDef, ModuleRef, TypeSpec, MemberRef
658 case MONO_MT_MRP_IDX:
659 n = MAX (meta->tables [MONO_TABLE_TYPEDEF].rows,
660 meta->tables [MONO_TABLE_TYPEREF].rows);
661 n = MAX (n, meta->tables [MONO_TABLE_METHOD].rows);
662 n = MAX (n, meta->tables [MONO_TABLE_MODULEREF].rows);
663 n = MAX (n, meta->tables [MONO_TABLE_TYPESPEC].rows);
664 n = MAX (n, meta->tables [MONO_TABLE_MEMBERREF].rows);
666 /* 3 bits to encode */
667 field_size = rtsize (n, 16 - 3);
670 case MONO_MT_MDOR_IDX:
673 * MethodDefOrRef: MethodDef, MemberRef
676 n = MAX (meta->tables [MONO_TABLE_METHOD].rows,
677 meta->tables [MONO_TABLE_MEMBERREF].rows);
679 /* 1 bit used to encode tag */
680 field_size = rtsize (n, 16-1);
684 * ResolutionScope: Module, ModuleRef, AssemblyRef, TypeRef
687 n = MAX (meta->tables [MONO_TABLE_MODULE].rows,
688 meta->tables [MONO_TABLE_MODULEREF].rows);
689 n = MAX (n, meta->tables [MONO_TABLE_ASSEMBLYREF].rows);
690 n = MAX (n, meta->tables [MONO_TABLE_TYPEREF].rows);
692 /* 2 bits used to encode tag (ECMA spec claims 3) */
693 field_size = rtsize (n, 16 - 2);
698 * encode field size as follows (we just need to
705 bitfield |= (field_size-1) << shift;
708 /*g_print ("table %02x field %d size %d\n", tableindex, i, field_size);*/
711 *result_bitfield = (i << 24) | bitfield;
716 * mono_metadata_compute_table_bases:
717 * @meta: metadata context to compute table values
719 * Computes the table bases for the metadata structure.
720 * This is an internal function used by the image loader code.
723 mono_metadata_compute_table_bases (MonoImage *meta)
726 const char *base = meta->tables_base;
728 for (i = 0; i < 64; i++){
729 if (meta->tables [i].rows == 0)
732 meta->tables [i].row_size = mono_metadata_compute_size (
733 meta, i, &meta->tables [i].size_bitfield);
734 meta->tables [i].base = base;
735 base += meta->tables [i].rows * meta->tables [i].row_size;
740 * mono_metadata_locate:
741 * @meta: metadata context
742 * @table: table code.
743 * @idx: index of element to retrieve from @table.
745 * Returns a pointer to the @idx element in the metadata table
746 * whose code is @table.
749 mono_metadata_locate (MonoImage *meta, int table, int idx)
751 /* idx == 0 refers always to NULL */
752 g_return_val_if_fail (idx > 0 && idx <= meta->tables [table].rows, "");
754 return meta->tables [table].base + (meta->tables [table].row_size * (idx - 1));
758 * mono_metadata_locate_token:
759 * @meta: metadata context
760 * @token: metadata token
762 * Returns a pointer to the data in the metadata represented by the
766 mono_metadata_locate_token (MonoImage *meta, guint32 token)
768 return mono_metadata_locate (meta, token >> 24, token & 0xffffff);
772 * mono_metadata_get_table:
773 * @table: table to retrieve
775 * Returns the MonoMetaTable structure for table @table
777 const MonoMetaTable *
778 mono_metadata_get_table (MonoMetaTableEnum table)
782 g_return_val_if_fail ((x > 0) && (x <= MONO_TABLE_LAST), NULL);
784 return tables [table].table;
788 * mono_metadata_string_heap:
789 * @meta: metadata context
790 * @index: index into the string heap.
792 * Returns: an in-memory pointer to the @index in the string heap.
795 mono_metadata_string_heap (MonoImage *meta, guint32 index)
797 g_return_val_if_fail (index < meta->heap_strings.size, "");
798 return meta->heap_strings.data + index;
802 * mono_metadata_user_string:
803 * @meta: metadata context
804 * @index: index into the user string heap.
806 * Returns: an in-memory pointer to the @index in the user string heap ("#US").
809 mono_metadata_user_string (MonoImage *meta, guint32 index)
811 g_return_val_if_fail (index < meta->heap_us.size, "");
812 return meta->heap_us.data + index;
816 * mono_metadata_blob_heap:
817 * @meta: metadata context
818 * @index: index into the blob.
820 * Returns: an in-memory pointer to the @index in the Blob heap.
823 mono_metadata_blob_heap (MonoImage *meta, guint32 index)
825 g_return_val_if_fail (index < meta->heap_blob.size, "");
826 return meta->heap_blob.data + index;
830 * mono_metadata_guid_heap:
831 * @meta: metadata context
832 * @index: index into the guid heap.
834 * Returns: an in-memory pointer to the @index in the guid heap.
837 mono_metadata_guid_heap (MonoImage *meta, guint32 index)
840 index *= 16; /* adjust for guid size and 1-based index */
841 g_return_val_if_fail (index < meta->heap_guid.size, "");
842 return meta->heap_guid.data + index;
846 dword_align (const char *ptr)
848 return (const char *) (((guint32) (ptr + 3)) & ~3);
852 * mono_metadata_decode_row:
853 * @t: table to extract information from.
854 * @idx: index in table.
855 * @res: array of @res_size cols to store the results in
857 * This decompresses the metadata element @idx in table @t
858 * into the guint32 @res array that has res_size elements
861 mono_metadata_decode_row (MonoTableInfo *t, int idx, guint32 *res, int res_size)
863 guint32 bitfield = t->size_bitfield;
864 int i, count = mono_metadata_table_count (bitfield);
865 const char *data = t->base + idx * t->row_size;
867 g_assert (res_size == count);
869 for (i = 0; i < count; i++){
870 int n = mono_metadata_table_size (bitfield, i);
874 res [i] = *data; break;
876 res [i] = read16 (data); break;
879 res [i] = read32 (data); break;
882 g_assert_not_reached ();
889 * mono_metadata_decode_row_col:
890 * @t: table to extract information from.
891 * @idx: index for row in table.
892 * @col: column in the row.
894 * This function returns the value of column @col from the @idx
895 * row in the table @t.
898 mono_metadata_decode_row_col (MonoTableInfo *t, int idx, guint col)
900 guint32 bitfield = t->size_bitfield;
902 register const char *data = t->base + idx * t->row_size;
905 g_assert (col < mono_metadata_table_count (bitfield));
907 n = mono_metadata_table_size (bitfield, 0);
908 for (i = 0; i < col; ++i) {
910 n = mono_metadata_table_size (bitfield, i + 1);
916 return read16 (data);
918 return read32 (data);
920 g_assert_not_reached ();
925 * mono_metadata_decode_blob_size:
926 * @ptr: pointer to a blob object
927 * @rptr: the new position of the pointer
929 * This decodes a compressed size as described by 23.1.4 (a blob or user string object)
931 * Returns: the size of the blob object
934 mono_metadata_decode_blob_size (const char *xptr, const char **rptr)
936 const unsigned char *ptr = (const unsigned char *)xptr;
939 if ((*ptr & 0x80) == 0){
940 size = ptr [0] & 0x7f;
942 } else if ((*ptr & 0x40) == 0){
943 size = ((ptr [0] & 0x3f) << 8) + ptr [1];
946 size = ((ptr [0] & 0x1f) << 24) +
959 * mono_metadata_decode_value:
960 * @ptr: pointer to decode from
961 * @rptr: the new position of the pointer
963 * This routine decompresses 32-bit values as specified in the "Blob and
964 * Signature" section (22.2)
966 * Returns: the decoded value
969 mono_metadata_decode_value (const char *_ptr, const char **rptr)
971 const unsigned char *ptr = (const unsigned char *) _ptr;
972 unsigned char b = *ptr;
975 if ((b & 0x80) == 0){
978 } else if ((b & 0x40) == 0){
979 len = ((b & 0x3f) << 8 | ptr [1]);
982 len = ((b & 0x1f) << 24) |
995 * mono_metadata_parse_typedef_or_ref:
996 * @m: a metadata context.
997 * @ptr: a pointer to an encoded TypedefOrRef in @m
998 * @rptr: pointer updated to match the end of the decoded stream
1000 * Returns: a token valid in the @m metadata decoded from
1001 * the compressed representation.
1004 mono_metadata_parse_typedef_or_ref (MonoImage *m, const char *ptr, const char **rptr)
1007 token = mono_metadata_decode_value (ptr, &ptr);
1010 return mono_metadata_token_from_dor (token);
1014 * mono_metadata_parse_custom_mod:
1015 * @m: a metadata context.
1016 * @dest: storage where the info about the custom modifier is stored (may be NULL)
1017 * @ptr: a pointer to (possibly) the start of a custom modifier list
1018 * @rptr: pointer updated to match the end of the decoded stream
1020 * Checks if @ptr points to a type custom modifier compressed representation.
1022 * Returns: #TRUE if a custom modifier was found, #FALSE if not.
1025 mono_metadata_parse_custom_mod (MonoImage *m, MonoCustomMod *dest, const char *ptr, const char **rptr)
1027 MonoCustomMod local;
1028 if ((*ptr == MONO_TYPE_CMOD_OPT) ||
1029 (*ptr == MONO_TYPE_CMOD_REQD)) {
1032 dest->required = *ptr == MONO_TYPE_CMOD_REQD ? 1 : 0;
1033 dest->token = mono_metadata_parse_typedef_or_ref (m, ptr + 1, rptr);
1040 * mono_metadata_parse_array:
1041 * @m: a metadata context.
1042 * @ptr: a pointer to an encoded array description.
1043 * @rptr: pointer updated to match the end of the decoded stream
1045 * Decodes the compressed array description found in the metadata @m at @ptr.
1047 * Returns: a #MonoArrayType structure describing the array type
1051 mono_metadata_parse_array (MonoImage *m, const char *ptr, const char **rptr)
1054 MonoArrayType *array = g_new0 (MonoArrayType, 1);
1056 array->type = mono_metadata_parse_type (m, MONO_PARSE_TYPE, 0, ptr, &ptr);
1057 array->rank = mono_metadata_decode_value (ptr, &ptr);
1059 array->numsizes = mono_metadata_decode_value (ptr, &ptr);
1060 if (array->numsizes)
1061 array->sizes = g_new0 (int, array->numsizes);
1062 for (i = 0; i < array->numsizes; ++i)
1063 array->sizes [i] = mono_metadata_decode_value (ptr, &ptr);
1065 array->numlobounds = mono_metadata_decode_value (ptr, &ptr);
1066 if (array->numlobounds)
1067 array->lobounds = g_new0 (int, array->numlobounds);
1068 for (i = 0; i < array->numlobounds; ++i)
1069 array->lobounds [i] = mono_metadata_decode_value (ptr, &ptr);
1077 * mono_metadata_free_array:
1078 * @array: array description
1080 * Frees the array description returned from mono_metadata_parse_array().
1083 mono_metadata_free_array (MonoArrayType *array)
1085 mono_metadata_free_type (array->type);
1086 g_free (array->sizes);
1087 g_free (array->lobounds);
1092 * need to add common field and param attributes combinations:
1095 * public static literal
1098 * private static literal
1102 /* data, attrs, type, nmods, byref, pinned */
1103 {{NULL}, 0, MONO_TYPE_VOID, 0, 0, 0},
1104 {{NULL}, 0, MONO_TYPE_BOOLEAN, 0, 0, 0},
1105 {{NULL}, 0, MONO_TYPE_BOOLEAN, 0, 1, 0},
1106 {{NULL}, 0, MONO_TYPE_CHAR, 0, 0, 0},
1107 {{NULL}, 0, MONO_TYPE_CHAR, 0, 1, 0},
1108 {{NULL}, 0, MONO_TYPE_I1, 0, 0, 0},
1109 {{NULL}, 0, MONO_TYPE_I1, 0, 1, 0},
1110 {{NULL}, 0, MONO_TYPE_U1, 0, 0, 0},
1111 {{NULL}, 0, MONO_TYPE_U1, 0, 1, 0},
1112 {{NULL}, 0, MONO_TYPE_I2, 0, 0, 0},
1113 {{NULL}, 0, MONO_TYPE_I2, 0, 1, 0},
1114 {{NULL}, 0, MONO_TYPE_U2, 0, 0, 0},
1115 {{NULL}, 0, MONO_TYPE_U2, 0, 1, 0},
1116 {{NULL}, 0, MONO_TYPE_I4, 0, 0, 0},
1117 {{NULL}, 0, MONO_TYPE_I4, 0, 1, 0},
1118 {{NULL}, 0, MONO_TYPE_U4, 0, 0, 0},
1119 {{NULL}, 0, MONO_TYPE_U4, 0, 1, 0},
1120 {{NULL}, 0, MONO_TYPE_I8, 0, 0, 0},
1121 {{NULL}, 0, MONO_TYPE_I8, 0, 1, 0},
1122 {{NULL}, 0, MONO_TYPE_U8, 0, 0, 0},
1123 {{NULL}, 0, MONO_TYPE_U8, 0, 1, 0},
1124 {{NULL}, 0, MONO_TYPE_R4, 0, 0, 0},
1125 {{NULL}, 0, MONO_TYPE_R4, 0, 1, 0},
1126 {{NULL}, 0, MONO_TYPE_R8, 0, 0, 0},
1127 {{NULL}, 0, MONO_TYPE_R8, 0, 1, 0},
1128 {{NULL}, 0, MONO_TYPE_STRING, 0, 0, 0},
1129 {{NULL}, 0, MONO_TYPE_STRING, 0, 1, 0},
1130 {{NULL}, 0, MONO_TYPE_TYPEDBYREF, 0, 0, 0},
1131 {{NULL}, 0, MONO_TYPE_I, 0, 0, 0},
1132 {{NULL}, 0, MONO_TYPE_I, 0, 1, 0},
1133 {{NULL}, 0, MONO_TYPE_U, 0, 0, 0},
1134 {{NULL}, 0, MONO_TYPE_U, 0, 1, 0},
1137 #define NBUILTIN_TYPES() (sizeof (builtin_types) / sizeof (builtin_types [0]))
1139 static GHashTable *type_cache = NULL;
1142 * MonoTypes with modifies are never cached, so we never check or use that field.
1145 mono_type_hash (gconstpointer data)
1147 const MonoType *type = (const MonoType *) data;
1148 return type->type | (type->byref << 8) | (type->attrs << 9);
1152 mono_type_equal (gconstpointer ka, gconstpointer kb)
1154 const MonoType *a = (const MonoType *) ka;
1155 const MonoType *b = (const MonoType *) kb;
1157 if (a->type != b->type || a->byref != b->byref || a->attrs != b->attrs || a->pinned != b->pinned)
1159 /* need other checks */
1164 * mono_metadata_parse_type:
1165 * @m: metadata context
1166 * @mode: king of type that may be found at @ptr
1167 * @opt_attrs: optional attributes to store in the returned type
1168 * @ptr: pointer to the type representation
1169 * @rptr: pointer updated to match the end of the decoded stream
1171 * Decode a compressed type description found at @ptr in @m.
1172 * @mode can be one of MONO_PARSE_MOD_TYPE, MONO_PARSE_PARAM, MONO_PARSE_RET,
1173 * MONO_PARSE_FIELD, MONO_PARSE_LOCAL, MONO_PARSE_TYPE.
1174 * This function can be used to decode type descriptions in method signatures,
1175 * field signatures, locals signatures etc.
1177 * Returns: a #MonoType structure representing the decoded type.
1180 mono_metadata_parse_type (MonoImage *m, MonoParseTypeMode mode, short opt_attrs, const char *ptr, const char **rptr)
1182 MonoType *type, *cached;
1186 type_cache = g_hash_table_new (mono_type_hash, mono_type_equal);
1188 for (i = 0; i < NBUILTIN_TYPES (); ++i)
1189 g_hash_table_insert (type_cache, &builtin_types [i], &builtin_types [i]);
1193 case MONO_PARSE_MOD_TYPE:
1194 case MONO_PARSE_PARAM:
1195 case MONO_PARSE_RET:
1196 case MONO_PARSE_LOCAL: /* should not have modifiers according to the spec, but ms tools disagree */
1197 case MONO_PARSE_FIELD: {
1198 /* count the modifiers */
1199 const char *tmp_ptr = ptr;
1201 while (mono_metadata_parse_custom_mod (m, NULL, tmp_ptr, &tmp_ptr))
1204 type = g_malloc0 (sizeof (MonoType) + ((gint32)count - MONO_ZERO_LEN_ARRAY) * sizeof (MonoCustomMod));
1205 type->num_mods = count;
1207 g_warning ("got more than 64 modifiers in type");
1208 /* save them this time */
1210 while (mono_metadata_parse_custom_mod (m, &(type->modifiers [count]), ptr, &ptr))
1213 } /* fall through */
1215 case MONO_PARSE_TYPE:
1217 * Later we can avoid doing this allocation.
1219 type = g_new0 (MonoType, 1);
1222 g_assert_not_reached ();
1225 type->attrs = opt_attrs;
1226 if (mode == MONO_PARSE_LOCAL) {
1228 * check for pinned flag
1230 if (*ptr == MONO_TYPE_PINNED) {
1237 case MONO_TYPE_BYREF:
1238 if (mode == MONO_PARSE_FIELD)
1239 g_warning ("A field type cannot be byref");
1242 /* follow through */
1244 /*if (*ptr == MONO_TYPE_VOID && mode != MONO_PARSE_RET)
1245 g_error ("void not allowed in param");*/
1246 do_mono_metadata_parse_type (type, m, ptr, &ptr);
1251 if (mode != MONO_PARSE_PARAM && !type->num_mods && (cached = g_hash_table_lookup (type_cache, type))) {
1252 mono_metadata_free_type (type);
1260 * mono_metadata_parse_signature:
1261 * @image: metadata context
1262 * @toke: metadata token
1264 * Decode a method signature stored in the STANDALONESIG table
1266 * Returns: a MonoMethodSignature describing the signature.
1268 MonoMethodSignature *
1269 mono_metadata_parse_signature (MonoImage *image, guint32 token)
1271 MonoTableInfo *tables = image->tables;
1272 guint32 idx = mono_metadata_token_index (token);
1276 if (image->assembly->dynamic)
1277 return mono_lookup_dynamic_token (image, token);
1279 g_assert (mono_metadata_token_table(token) == MONO_TABLE_STANDALONESIG);
1281 sig = mono_metadata_decode_row_col (&tables [MONO_TABLE_STANDALONESIG], idx - 1, 0);
1283 ptr = mono_metadata_blob_heap (image, sig);
1284 mono_metadata_decode_blob_size (ptr, &ptr);
1286 return mono_metadata_parse_method_signature (image, FALSE, ptr, NULL);
1289 MonoMethodSignature*
1290 mono_metadata_signature_alloc (MonoImage *m, guint32 nparams)
1292 MonoMethodSignature *sig;
1294 /* later we want to allocate signatures with mempools */
1295 sig = g_malloc0 (sizeof (MonoMethodSignature) + ((gint32)nparams - MONO_ZERO_LEN_ARRAY) * sizeof (MonoType*));
1296 sig->param_count = nparams;
1302 * mono_metadata_parse_method_signature:
1303 * @m: metadata context
1304 * @def: the MethodDef index or 0 for Ref signatures.
1305 * @ptr: pointer to the signature metadata representation
1306 * @rptr: pointer updated to match the end of the decoded stream
1308 * Decode a method signature stored at @ptr.
1310 * Returns: a MonoMethodSignature describing the signature.
1312 MonoMethodSignature *
1313 mono_metadata_parse_method_signature (MonoImage *m, int def, const char *ptr, const char **rptr)
1315 MonoMethodSignature *method;
1316 int i, ret_attrs = 0, *pattrs = NULL;
1317 guint32 hasthis = 0, explicit_this = 0, call_convention, param_count;
1318 guint32 gen_param_count = 0;
1321 gen_param_count = 1;
1326 call_convention = *ptr & 0x0F;
1328 if (gen_param_count)
1329 gen_param_count = mono_metadata_decode_value (ptr, &ptr);
1330 param_count = mono_metadata_decode_value (ptr, &ptr);
1331 pattrs = g_new0 (int, param_count);
1334 MonoTableInfo *paramt = &m->tables [MONO_TABLE_PARAM];
1335 MonoTableInfo *methodt = &m->tables [MONO_TABLE_METHOD];
1336 guint32 cols [MONO_PARAM_SIZE];
1337 guint lastp, param_index = mono_metadata_decode_row_col (methodt, def - 1, MONO_METHOD_PARAMLIST);
1339 if (def < methodt->rows)
1340 lastp = mono_metadata_decode_row_col (methodt, def, MONO_METHOD_PARAMLIST);
1342 lastp = paramt->rows + 1;
1343 for (i = param_index; i < lastp; ++i) {
1344 mono_metadata_decode_row (paramt, i - 1, cols, MONO_PARAM_SIZE);
1345 if (!cols [MONO_PARAM_SEQUENCE])
1346 ret_attrs = cols [MONO_PARAM_FLAGS];
1348 pattrs [cols [MONO_PARAM_SEQUENCE] - 1] = cols [MONO_PARAM_FLAGS];
1351 method = mono_metadata_signature_alloc (m, param_count);
1352 method->hasthis = hasthis;
1353 method->explicit_this = explicit_this;
1354 method->call_convention = call_convention;
1355 if (call_convention != 0xa)
1356 method->ret = mono_metadata_parse_type (m, MONO_PARSE_RET, ret_attrs, ptr, &ptr);
1358 if (method->param_count) {
1359 method->sentinelpos = -1;
1361 for (i = 0; i < method->param_count; ++i) {
1362 if (*ptr == MONO_TYPE_SENTINEL) {
1363 if (method->call_convention != MONO_CALL_VARARG || def)
1364 g_error ("found sentinel for methoddef or no vararg method");
1365 method->sentinelpos = i;
1368 method->params [i] = mono_metadata_parse_type (m, MONO_PARSE_PARAM, pattrs [i], ptr, &ptr);
1376 * Add signature to a cache and increase ref count...
1382 * mono_metadata_free_method_signature:
1383 * @sig: signature to destroy
1385 * Free the memory allocated in the signature @sig.
1388 mono_metadata_free_method_signature (MonoMethodSignature *sig)
1391 mono_metadata_free_type (sig->ret);
1392 for (i = 0; i < sig->param_count; ++i)
1393 mono_metadata_free_type (sig->params [i]);
1398 static MonoGenericInst *
1399 mono_metadata_parse_generic_inst (MonoImage *m, const char *ptr, const char **rptr)
1401 MonoGenericInst *generic_inst = g_new0 (MonoGenericInst, 1);
1404 generic_inst->generic_type = mono_metadata_parse_type (m, MONO_PARSE_TYPE, 0, ptr, &ptr);
1405 generic_inst->type_argc = count = mono_metadata_decode_value (ptr, &ptr);
1406 generic_inst->type_argv = g_new0 (MonoType*, count);
1408 for (i = 0; i < generic_inst->type_argc; i++)
1409 generic_inst->type_argv [i] = mono_metadata_parse_type (m, MONO_PARSE_TYPE, 0, ptr, &ptr);
1414 return generic_inst;
1418 * do_mono_metadata_parse_type:
1419 * @type: MonoType to be filled in with the return value
1421 * Internal routine used to "fill" the contents of @type from an
1422 * allocated pointer. This is done this way to avoid doing too
1423 * many mini-allocations (particularly for the MonoFieldType which
1424 * most of the time is just a MonoType, but sometimes might be augmented).
1426 * This routine is used by mono_metadata_parse_type and
1427 * mono_metadata_parse_field_type
1429 * This extracts a Type as specified in Partition II (22.2.12)
1432 do_mono_metadata_parse_type (MonoType *type, MonoImage *m, const char *ptr, const char **rptr)
1434 type->type = mono_metadata_decode_value (ptr, &ptr);
1436 switch (type->type){
1437 case MONO_TYPE_VOID:
1438 case MONO_TYPE_BOOLEAN:
1439 case MONO_TYPE_CHAR:
1452 case MONO_TYPE_STRING:
1453 case MONO_TYPE_OBJECT:
1454 case MONO_TYPE_TYPEDBYREF:
1456 case MONO_TYPE_VALUETYPE:
1457 case MONO_TYPE_CLASS: {
1459 token = mono_metadata_parse_typedef_or_ref (m, ptr, &ptr);
1460 type->data.klass = mono_class_get (m, token);
1463 case MONO_TYPE_SZARRAY:
1465 type->data.type = mono_metadata_parse_type (m, MONO_PARSE_MOD_TYPE, 0, ptr, &ptr);
1467 case MONO_TYPE_FNPTR:
1468 type->data.method = mono_metadata_parse_method_signature (m, 0, ptr, &ptr);
1470 case MONO_TYPE_ARRAY:
1471 type->data.array = mono_metadata_parse_array (m, ptr, &ptr);
1474 case MONO_TYPE_MVAR:
1476 type->data.type_param = mono_metadata_decode_value (ptr, &ptr);
1479 case MONO_TYPE_GENERICINST:
1480 type->data.generic_inst = mono_metadata_parse_generic_inst (m, ptr, &ptr);
1484 g_error ("type 0x%02x not handled in do_mono_metadata_parse_type", type->type);
1492 * mono_metadata_free_type:
1493 * @type: type to free
1495 * Free the memory allocated for type @type.
1498 mono_metadata_free_type (MonoType *type)
1500 if (type >= builtin_types && type < builtin_types + NBUILTIN_TYPES ())
1502 switch (type->type){
1503 case MONO_TYPE_SZARRAY:
1505 mono_metadata_free_type (type->data.type);
1507 case MONO_TYPE_FNPTR:
1508 mono_metadata_free_method_signature (type->data.method);
1510 case MONO_TYPE_ARRAY:
1511 mono_metadata_free_array (type->data.array);
1519 hex_dump (const char *buffer, int base, int count)
1521 int show_header = 1;
1529 for (i = 0; i < count; i++){
1532 printf ("\n0x%08x: ", (unsigned char) base + i);
1534 printf ("%02x ", (unsigned char) (buffer [i]));
1541 * @mh: The Method header
1542 * @ptr: Points to the beginning of the Section Data (25.3)
1545 parse_section_data (MonoMethodHeader *mh, const unsigned char *ptr)
1547 unsigned char sect_data_flags;
1548 const unsigned char *sptr;
1550 guint32 sect_data_len;
1553 /* align on 32-bit boundary */
1554 /* FIXME: not 64-bit clean code */
1555 sptr = ptr = dword_align (ptr);
1556 sect_data_flags = *ptr;
1559 is_fat = sect_data_flags & METHOD_HEADER_SECTION_FAT_FORMAT;
1561 sect_data_len = (ptr [2] << 16) | (ptr [1] << 8) | ptr [0];
1564 sect_data_len = ptr [0];
1568 g_print ("flags: %02x, len: %d\n", sect_data_flags, sect_data_len);
1569 hex_dump (sptr, 0, sect_data_len+8);
1570 g_print ("\nheader: ");
1571 hex_dump (sptr-4, 0, 4);
1575 if (sect_data_flags & METHOD_HEADER_SECTION_EHTABLE) {
1576 const unsigned char *p = dword_align (ptr);
1578 mh->num_clauses = is_fat ? sect_data_len / 24: sect_data_len / 12;
1579 /* we could just store a pointer if we don't need to byteswap */
1580 mh->clauses = g_new0 (MonoExceptionClause, mh->num_clauses);
1581 for (i = 0; i < mh->num_clauses; ++i) {
1582 MonoExceptionClause *ec = &mh->clauses [i];
1585 /* we could memcpy and byteswap */
1586 ec->flags = read32 (p);
1588 ec->try_offset = read32 (p);
1590 ec->try_len = read32 (p);
1592 ec->handler_offset = read32 (p);
1594 ec->handler_len = read32 (p);
1596 ec->token_or_filter = read32 (p);
1599 ec->flags = read16 (p);
1601 ec->try_offset = read16 (p);
1605 ec->handler_offset = read16 (p);
1607 ec->handler_len = *p;
1609 ec->token_or_filter = read32 (p);
1612 /* g_print ("try %d: %x %04x-%04x %04x\n", i, ec->flags, ec->try_offset, ec->try_offset+ec->try_len, ec->try_len); */
1616 if (sect_data_flags & METHOD_HEADER_SECTION_MORE_SECTS)
1617 ptr += sect_data_len - 4; /* LAMESPEC: it seems the size includes the header */
1624 * mono_metadata_parse_mh:
1625 * @m: metadata context
1626 * @ptr: pointer to the method header.
1628 * Decode the method header at @ptr, including pointer to the IL code,
1629 * info about local variables and optional exception tables.
1631 * Returns: a MonoMethodHeader.
1634 mono_metadata_parse_mh (MonoImage *m, const char *ptr)
1636 MonoMethodHeader *mh;
1637 unsigned char flags = *(const unsigned char *) ptr;
1638 unsigned char format = flags & METHOD_HEADER_FORMAT_MASK;
1640 guint32 local_var_sig_tok, max_stack, code_size, init_locals;
1641 const unsigned char *code;
1644 g_return_val_if_fail (ptr != NULL, NULL);
1647 case METHOD_HEADER_TINY_FORMAT:
1648 mh = g_new0 (MonoMethodHeader, 1);
1651 local_var_sig_tok = 0;
1652 mh->code_size = flags >> 2;
1655 case METHOD_HEADER_TINY_FORMAT1:
1656 mh = g_new0 (MonoMethodHeader, 1);
1659 local_var_sig_tok = 0;
1662 * The spec claims 3 bits, but the Beta2 is
1665 mh->code_size = flags >> 2;
1668 case METHOD_HEADER_FAT_FORMAT:
1669 fat_flags = read16 (ptr);
1671 hsize = (fat_flags >> 12) & 0xf;
1672 max_stack = read16 (ptr);
1674 code_size = read32 (ptr);
1676 local_var_sig_tok = read32 (ptr);
1679 if (fat_flags & METHOD_HEADER_INIT_LOCALS)
1686 if (!(fat_flags & METHOD_HEADER_MORE_SECTS))
1690 * There are more sections
1692 ptr = code + code_size;
1700 if (local_var_sig_tok) {
1701 MonoTableInfo *t = &m->tables [MONO_TABLE_STANDALONESIG];
1702 const char *locals_ptr;
1703 guint32 cols [MONO_STAND_ALONE_SIGNATURE_SIZE];
1704 int len=0, i, bsize;
1706 mono_metadata_decode_row (t, (local_var_sig_tok & 0xffffff)-1, cols, 1);
1707 locals_ptr = mono_metadata_blob_heap (m, cols [MONO_STAND_ALONE_SIGNATURE]);
1708 bsize = mono_metadata_decode_blob_size (locals_ptr, &locals_ptr);
1709 if (*locals_ptr != 0x07)
1710 g_warning ("wrong signature for locals blob");
1712 len = mono_metadata_decode_value (locals_ptr, &locals_ptr);
1713 mh = g_malloc0 (sizeof (MonoMethodHeader) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (MonoType*));
1714 mh->num_locals = len;
1715 for (i = 0; i < len; ++i)
1716 mh->locals [i] = mono_metadata_parse_type (m, MONO_PARSE_LOCAL, 0, locals_ptr, &locals_ptr);
1718 mh = g_new0 (MonoMethodHeader, 1);
1721 mh->code_size = code_size;
1722 mh->max_stack = max_stack;
1723 mh->init_locals = init_locals;
1724 if (fat_flags & METHOD_HEADER_MORE_SECTS)
1725 parse_section_data (mh, (const unsigned char*)ptr);
1730 * mono_metadata_free_mh:
1731 * @mh: a method header
1733 * Free the memory allocated for the method header.
1736 mono_metadata_free_mh (MonoMethodHeader *mh)
1739 for (i = 0; i < mh->num_locals; ++i)
1740 mono_metadata_free_type (mh->locals[i]);
1741 g_free (mh->clauses);
1746 * mono_metadata_parse_field_type:
1747 * @m: metadata context to extract information from
1748 * @ptr: pointer to the field signature
1749 * @rptr: pointer updated to match the end of the decoded stream
1751 * Parses the field signature, and returns the type information for it.
1753 * Returns: The MonoType that was extracted from @ptr.
1756 mono_metadata_parse_field_type (MonoImage *m, short field_flags, const char *ptr, const char **rptr)
1758 return mono_metadata_parse_type (m, MONO_PARSE_FIELD, field_flags, ptr, rptr);
1762 * mono_metadata_parse_param:
1763 * @m: metadata context to extract information from
1764 * @ptr: pointer to the param signature
1765 * @rptr: pointer updated to match the end of the decoded stream
1767 * Parses the param signature, and returns the type information for it.
1769 * Returns: The MonoType that was extracted from @ptr.
1772 mono_metadata_parse_param (MonoImage *m, const char *ptr, const char **rptr)
1774 return mono_metadata_parse_type (m, MONO_PARSE_PARAM, 0, ptr, rptr);
1778 * mono_metadata_token_from_dor:
1779 * @dor_token: A TypeDefOrRef coded index
1781 * dor_token is a TypeDefOrRef coded index: it contains either
1782 * a TypeDef, TypeRef or TypeSpec in the lower bits, and the upper
1783 * bits contain an index into the table.
1785 * Returns: an expanded token
1788 mono_metadata_token_from_dor (guint32 dor_index)
1792 table = dor_index & 0x03;
1793 idx = dor_index >> 2;
1796 case 0: /* TypeDef */
1797 return MONO_TOKEN_TYPE_DEF | idx;
1799 case 1: /* TypeRef */
1800 return MONO_TOKEN_TYPE_REF | idx;
1802 case 2: /* TypeSpec */
1803 return MONO_TOKEN_TYPE_SPEC | idx;
1806 g_assert_not_reached ();
1813 * We use this to pass context information to the row locator
1816 int idx; /* The index that we are trying to locate */
1817 int col_idx; /* The index in the row where idx may be stored */
1818 MonoTableInfo *t; /* pointer to the table */
1822 #define CSIZE(x) (sizeof (x) / 4)
1825 * How the row locator works.
1830 * ___|___------> _______
1833 * A column in the rows of table A references an index in table B.
1834 * For example A may be the TYPEDEF table and B the METHODDEF table.
1836 * Given an index in table B we want to get the row in table A
1837 * where the column n references our index in B.
1839 * In the locator_t structure:
1841 * col_idx is the column number
1842 * index is the index in table B
1843 * result will be the index in table A
1846 * Table A Table B column (in table A)
1847 * TYPEDEF METHODDEF MONO_TYPEDEF_METHOD_LIST
1848 * TYPEDEF FIELD MONO_TYPEDEF_FIELD_LIST
1849 * PROPERTYMAP PROPERTY MONO_PROPERTY_MAP_PROPERTY_LIST
1850 * INTERFIMPL TYPEDEF MONO_INTERFACEIMPL_CLASS
1851 * METHODSEM PROPERTY ASSOCIATION (encoded index)
1853 * Note that we still don't support encoded indexes.
1857 typedef_locator (const void *a, const void *b)
1859 locator_t *loc = (locator_t *) a;
1860 const char *bb = (const char *) b;
1861 int typedef_index = (bb - loc->t->base) / loc->t->row_size;
1862 guint32 col, col_next;
1864 col = mono_metadata_decode_row_col (loc->t, typedef_index, loc->col_idx);
1870 * Need to check that the next row is valid.
1872 if (typedef_index + 1 < loc->t->rows) {
1873 col_next = mono_metadata_decode_row_col (loc->t, typedef_index + 1, loc->col_idx);
1874 if (loc->idx >= col_next)
1877 if (col == col_next)
1881 loc->result = typedef_index;
1887 table_locator (const void *a, const void *b)
1889 locator_t *loc = (locator_t *) a;
1890 const char *bb = (const char *) b;
1891 guint32 table_index = (bb - loc->t->base) / loc->t->row_size;
1894 col = mono_metadata_decode_row_col (loc->t, table_index, loc->col_idx);
1896 if (loc->idx == col) {
1897 loc->result = table_index;
1907 * mono_metadata_typedef_from_field:
1908 * @meta: metadata context
1909 * @index: FieldDef token
1911 * Returns the 1-based index into the TypeDef table of the type that
1912 * declared the field described by @index.
1913 * Returns 0 if not found.
1916 mono_metadata_typedef_from_field (MonoImage *meta, guint32 index)
1918 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_TYPEDEF];
1924 loc.idx = mono_metadata_token_index (index);
1925 loc.col_idx = MONO_TYPEDEF_FIELD_LIST;
1928 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, typedef_locator))
1929 g_assert_not_reached ();
1931 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
1932 return loc.result + 1;
1936 * mono_metadata_typedef_from_method:
1937 * @meta: metadata context
1938 * @index: MethodDef token
1940 * Returns the 1-based index into the TypeDef table of the type that
1941 * declared the method described by @index.
1942 * Returns 0 if not found.
1945 mono_metadata_typedef_from_method (MonoImage *meta, guint32 index)
1947 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_TYPEDEF];
1953 loc.idx = mono_metadata_token_index (index);
1954 loc.col_idx = MONO_TYPEDEF_METHOD_LIST;
1957 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, typedef_locator))
1958 g_assert_not_reached ();
1960 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
1961 return loc.result + 1;
1965 * mono_metadata_interfaces_from_typedef:
1966 * @meta: metadata context
1967 * @index: typedef token
1969 * Returns and array of interfaces that the @index typedef token implements.
1970 * The number of elemnts in the array is returned in @count.
1973 mono_metadata_interfaces_from_typedef (MonoImage *meta, guint32 index, guint *count)
1975 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_INTERFACEIMPL];
1978 guint32 cols [MONO_INTERFACEIMPL_SIZE];
1986 loc.idx = mono_metadata_token_index (index);
1987 loc.col_idx = MONO_INTERFACEIMPL_CLASS;
1990 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
1995 * We may end up in the middle of the rows...
1998 if (loc.idx == mono_metadata_decode_row_col (tdef, start - 1, MONO_INTERFACEIMPL_CLASS))
2005 while (start < tdef->rows) {
2006 mono_metadata_decode_row (tdef, start, cols, MONO_INTERFACEIMPL_SIZE);
2007 if (cols [MONO_INTERFACEIMPL_CLASS] != loc.idx)
2009 result = g_renew (MonoClass*, result, i + 1);
2010 result [i] = mono_class_get (meta, mono_metadata_token_from_dor (cols [MONO_INTERFACEIMPL_INTERFACE]));
2018 * mono_metadata_nested_in_typedef:
2019 * @meta: metadata context
2020 * @index: typedef token
2022 * Returns: the 1-based index into the TypeDef table of the type
2023 * where the type described by @index is nested.
2024 * Retruns 0 if @index describes a non-nested type.
2027 mono_metadata_nested_in_typedef (MonoImage *meta, guint32 index)
2029 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_NESTEDCLASS];
2035 loc.idx = mono_metadata_token_index (index);
2036 loc.col_idx = MONO_NESTED_CLASS_NESTED;
2039 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
2042 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
2043 return mono_metadata_decode_row_col (tdef, loc.result, MONO_NESTED_CLASS_ENCLOSING) | MONO_TOKEN_TYPE_DEF;
2047 * mono_metadata_nesting_typedef:
2048 * @meta: metadata context
2049 * @index: typedef token
2051 * Returns: the 1-based index into the TypeDef table of the first type
2052 * that is nested inside the type described by @index. The search starts at
2054 * Returns 0 if no such type is found.
2057 mono_metadata_nesting_typedef (MonoImage *meta, guint32 index, guint32 start_index)
2059 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_NESTEDCLASS];
2061 guint32 class_index = mono_metadata_token_index (index);
2066 start = start_index;
2068 while (start <= tdef->rows) {
2069 if (class_index == mono_metadata_decode_row_col (tdef, start - 1, MONO_NESTED_CLASS_ENCLOSING))
2075 if (start > tdef->rows)
2082 * mono_metadata_packing_from_typedef:
2083 * @meta: metadata context
2084 * @index: token representing a type
2086 * Returns the info stored in the ClassLAyout table for the given typedef token
2087 * into the @packing and @size pointers.
2088 * Returns 0 if the info is not found.
2091 mono_metadata_packing_from_typedef (MonoImage *meta, guint32 index, guint32 *packing, guint32 *size)
2093 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_CLASSLAYOUT];
2095 guint32 cols [MONO_CLASS_LAYOUT_SIZE];
2100 loc.idx = mono_metadata_token_index (index);
2101 loc.col_idx = MONO_CLASS_LAYOUT_PARENT;
2104 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
2107 mono_metadata_decode_row (tdef, loc.result, cols, MONO_CLASS_LAYOUT_SIZE);
2109 *packing = cols [MONO_CLASS_LAYOUT_PACKING_SIZE];
2111 *size = cols [MONO_CLASS_LAYOUT_CLASS_SIZE];
2113 /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
2114 return loc.result + 1;
2118 /*#define __alignof__(a) sizeof(a)*/
2119 #define __alignof__(type) G_STRUCT_OFFSET(struct { char c; type x; }, x)
2124 * @t: the type to return the size of
2126 * Returns: the number of bytes required to hold an instance of this
2130 mono_type_size (MonoType *t, gint *align)
2137 *align = __alignof__(gpointer);
2138 return sizeof (gpointer);
2142 case MONO_TYPE_VOID:
2145 case MONO_TYPE_BOOLEAN:
2146 *align = __alignof__(gint8);
2150 *align = __alignof__(gint8);
2152 case MONO_TYPE_CHAR:
2155 *align = __alignof__(gint16);
2159 *align = __alignof__(gint32);
2162 *align = __alignof__(float);
2166 *align = __alignof__(gint64);
2169 *align = __alignof__(double);
2173 *align = __alignof__(gpointer);
2174 return sizeof (gpointer);
2175 case MONO_TYPE_STRING:
2176 *align = __alignof__(gpointer);
2177 return sizeof (gpointer);
2178 case MONO_TYPE_OBJECT:
2179 *align = __alignof__(gpointer);
2180 return sizeof (gpointer);
2181 case MONO_TYPE_VALUETYPE: {
2182 if (t->data.klass->enumtype)
2183 return mono_type_size (t->data.klass->enum_basetype, align);
2185 return mono_class_value_size (t->data.klass, align);
2187 case MONO_TYPE_CLASS:
2188 case MONO_TYPE_SZARRAY:
2190 case MONO_TYPE_FNPTR:
2191 case MONO_TYPE_ARRAY:
2192 case MONO_TYPE_TYPEDBYREF: /* we may want to use a struct {MonoType* type, void *data } instead ...*/
2193 *align = __alignof__(gpointer);
2194 return sizeof (gpointer);
2196 g_error ("mono_type_size: type 0x%02x unknown", t->type);
2202 * mono_type_stack_size:
2203 * @t: the type to return the size it uses on the stack
2205 * Returns: the number of bytes required to hold an instance of this
2206 * type on the runtime stack
2209 mono_type_stack_size (MonoType *t, gint *align)
2213 g_assert (t != NULL);
2219 *align = __alignof__(gpointer);
2220 return sizeof (gpointer);
2224 case MONO_TYPE_BOOLEAN:
2225 case MONO_TYPE_CHAR:
2234 case MONO_TYPE_STRING:
2235 case MONO_TYPE_OBJECT:
2236 case MONO_TYPE_CLASS:
2237 case MONO_TYPE_SZARRAY:
2239 case MONO_TYPE_FNPTR:
2240 case MONO_TYPE_ARRAY:
2241 case MONO_TYPE_TYPEDBYREF:
2242 *align = __alignof__(gpointer);
2243 return sizeof (gpointer);
2245 *align = __alignof__(float);
2246 return sizeof (float);
2249 *align = __alignof__(gint64);
2250 return sizeof (gint64);
2252 *align = __alignof__(double);
2253 return sizeof (double);
2254 case MONO_TYPE_VALUETYPE: {
2257 if (t->data.klass->enumtype)
2258 return mono_type_stack_size (t->data.klass->enum_basetype, align);
2260 size = mono_class_value_size (t->data.klass, align);
2262 *align = *align + __alignof__(gpointer) - 1;
2263 *align &= ~(__alignof__(gpointer) - 1);
2265 size += sizeof (gpointer) - 1;
2266 size &= ~(sizeof (gpointer) - 1);
2272 g_error ("type 0x%02x unknown", t->type);
2278 * mono_metadata_type_hash:
2281 * Computes an hash value for @t1 to be used in GHashTable.
2284 mono_metadata_type_hash (MonoType *t1)
2286 guint hash = t1->type;
2288 hash |= t1->byref << 6; /* do not collide with t1->type values */
2290 case MONO_TYPE_VALUETYPE:
2291 case MONO_TYPE_CLASS:
2292 /* check if the distribution is good enough */
2293 return ((hash << 5) - hash) ^ g_str_hash (t1->data.klass->name);
2295 return ((hash << 5) - hash) ^ mono_metadata_type_hash (t1->data.type);
2296 case MONO_TYPE_SZARRAY:
2297 if (t1->data.type->type == MONO_TYPE_OBJECT)
2298 return ((hash << 5) - hash);
2299 return ((hash << 5) - hash) ^ (gint32)(t1->data.type->data.klass);
2300 case MONO_TYPE_ARRAY:
2301 return ((hash << 5) - hash) ^ mono_metadata_type_hash (t1->data.array->type);
2307 * mono_metadata_type_equal:
2311 * Determine if @t1 and @t2 represent the same type.
2312 * Returns: #TRUE if @t1 and @t2 are equal.
2315 mono_metadata_type_equal (MonoType *t1, MonoType *t2)
2317 if (t1->type != t2->type ||
2318 t1->byref != t2->byref)
2322 case MONO_TYPE_VOID:
2323 case MONO_TYPE_BOOLEAN:
2324 case MONO_TYPE_CHAR:
2335 case MONO_TYPE_STRING:
2338 case MONO_TYPE_OBJECT:
2339 case MONO_TYPE_TYPEDBYREF:
2341 case MONO_TYPE_VALUETYPE:
2342 case MONO_TYPE_CLASS:
2343 return t1->data.klass == t2->data.klass;
2345 return mono_metadata_type_equal (t1->data.type, t2->data.type);
2346 case MONO_TYPE_SZARRAY:
2348 if (t1->data.type->type != t2->data.type->type)
2350 if (t1->data.type->type == MONO_TYPE_CLASS || t1->data.type->type == MONO_TYPE_VALUETYPE)
2351 return t1->data.type->data.klass == t2->data.type->data.klass;
2352 if (t1->data.type->type == MONO_TYPE_SZARRAY) {
2357 return mono_metadata_type_equal (t1->data.type, t2->data.type);
2358 case MONO_TYPE_ARRAY:
2359 if (t1->data.array->rank != t2->data.array->rank)
2361 return mono_metadata_type_equal (t1->data.array->type, t2->data.array->type);
2363 g_error ("implement type compare for %0x!", t1->type);
2371 * mono_metadata_signature_equal:
2372 * @sig1: a signature
2373 * @sig2: another signature
2375 * Determine if @sig1 and @sig2 represent the same signature, with the
2376 * same number of arguments and the same types.
2377 * Returns: #TRUE if @sig1 and @sig2 are equal.
2380 mono_metadata_signature_equal (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
2384 if (sig1->hasthis != sig2->hasthis ||
2385 sig1->param_count != sig2->param_count)
2388 for (i = 0; i < sig1->param_count; i++) {
2389 MonoType *p1 = sig1->params[i];
2390 MonoType *p2 = sig2->params[i];
2392 //if (p1->attrs != p2->attrs)
2395 if (!mono_metadata_type_equal (p1, p2))
2399 if (!mono_metadata_type_equal (sig1->ret, sig2->ret))
2405 mono_signature_hash (MonoMethodSignature *sig)
2407 guint i, res = sig->ret->type;
2409 for (i = 0; i < sig->param_count; i++)
2410 res = (res << 5) - res + sig->params[i]->type;
2416 * mono_metadata_encode_value:
2417 * @value: value to encode
2418 * @buf: buffer where to write the compressed representation
2419 * @endbuf: pointer updated to point at the end of the encoded output
2421 * Encodes the value @value in the compressed representation used
2422 * in metadata and stores the result in @buf. @buf needs to be big
2423 * enough to hold the data (4 bytes).
2426 mono_metadata_encode_value (guint32 value, char *buf, char **endbuf)
2432 else if (value <= 16384) {
2433 p [0] = 0x80 | (value >> 8);
2434 p [1] = value & 0xff;
2437 p [0] = (value >> 24) | 0xc0;
2438 p [1] = (value >> 16) & 0xff;
2439 p [2] = (value >> 8) & 0xff;
2440 p [3] = value & 0xff;
2448 * mono_metadata_field_info:
2449 * @meta: the Image the field is defined in
2450 * @index: the index in the field table representing the field
2451 * @offset: a pointer to an integer where to store the offset that
2452 * may have been specified for the field in a FieldLayout table
2453 * @rva: a pointer to the RVA of the field data in the image that
2454 * may have been defined in a FieldRVA table
2455 * @marshal_spec: a pointer to the marshal spec that may have been
2456 * defined for the field in a FieldMarshal table.
2458 * Gather info for field @index that may have been defined in the FieldLayout,
2459 * FieldRVA and FieldMarshal tables.
2460 * Either of offset, rva and marshal_spec can be NULL if you're not interested
2464 mono_metadata_field_info (MonoImage *meta, guint32 index, guint32 *offset, guint32 *rva,
2465 MonoMarshalSpec **marshal_spec)
2467 MonoTableInfo *tdef;
2470 loc.idx = index + 1;
2472 tdef = &meta->tables [MONO_TABLE_FIELDLAYOUT];
2474 loc.col_idx = MONO_FIELD_LAYOUT_FIELD;
2477 if (tdef->base && bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator)) {
2478 *offset = mono_metadata_decode_row_col (tdef, loc.result, MONO_FIELD_LAYOUT_OFFSET);
2480 *offset = (guint32)-1;
2484 tdef = &meta->tables [MONO_TABLE_FIELDRVA];
2486 loc.col_idx = MONO_FIELD_RVA_FIELD;
2489 if (tdef->base && bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator)) {
2491 * LAMESPEC: There is no signature, no nothing, just the raw data.
2493 *rva = mono_metadata_decode_row_col (tdef, loc.result, MONO_FIELD_RVA_RVA);
2501 if ((p = mono_metadata_get_marshal_info (meta, index, TRUE))) {
2502 *marshal_spec = mono_metadata_parse_marshal_spec (meta, p);
2509 * mono_metadata_get_constant_index:
2510 * @meta: the Image the field is defined in
2511 * @index: the token that may have a row defined in the constants table
2513 * @token must be a FieldDef, ParamDef or PropertyDef token.
2515 * Returns: the index into the Constsnts table or 0 if not found.
2518 mono_metadata_get_constant_index (MonoImage *meta, guint32 token)
2520 MonoTableInfo *tdef;
2522 guint32 index = mono_metadata_token_index (token);
2524 tdef = &meta->tables [MONO_TABLE_CONSTANT];
2525 index <<= HASCONSTANT_BITS;
2526 switch (mono_metadata_token_table (token)) {
2527 case MONO_TABLE_FIELD:
2528 index |= HASCONSTANT_FIEDDEF;
2530 case MONO_TABLE_PARAM:
2531 index |= HASCONSTANT_PARAM;
2533 case MONO_TABLE_PROPERTY:
2534 index |= HASCONSTANT_PROPERTY;
2537 g_warning ("Not a valid token for the constant table: 0x%08x", token);
2541 loc.col_idx = MONO_CONSTANT_PARENT;
2544 if (tdef->base && bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator)) {
2545 return loc.result + 1;
2551 * mono_metadata_events_from_typedef:
2552 * @meta: metadata context
2553 * @index: 0-based index (in the TypeDef table) describing a type
2555 * Returns: the 0-based index in the Event table for the events in the
2556 * type. The last event that belongs to the type (plus 1) is stored
2557 * in the @end_idx pointer.
2560 mono_metadata_events_from_typedef (MonoImage *meta, guint32 index, guint *end_idx)
2564 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_EVENTMAP];
2572 loc.col_idx = MONO_EVENT_MAP_PARENT;
2573 loc.idx = index + 1;
2575 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
2578 start = mono_metadata_decode_row_col (tdef, loc.result, MONO_EVENT_MAP_EVENTLIST);
2579 if (loc.result + 1 < tdef->rows) {
2580 end = mono_metadata_decode_row_col (tdef, loc.result + 1, MONO_EVENT_MAP_EVENTLIST) - 1;
2582 end = meta->tables [MONO_TABLE_EVENT].rows;
2590 * mono_metadata_methods_from_event:
2591 * @meta: metadata context
2592 * @index: 0-based index (in the Event table) describing a event
2594 * Returns: the 0-based index in the MethodDef table for the methods in the
2595 * event. The last method that belongs to the event (plus 1) is stored
2596 * in the @end_idx pointer.
2599 mono_metadata_methods_from_event (MonoImage *meta, guint32 index, guint *end_idx)
2603 guint32 cols [MONO_METHOD_SEMA_SIZE];
2604 MonoTableInfo *msemt = &meta->tables [MONO_TABLE_METHODSEMANTICS];
2611 loc.col_idx = MONO_METHOD_SEMA_ASSOCIATION;
2612 loc.idx = ((index + 1) << HAS_SEMANTICS_BITS) | HAS_SEMANTICS_EVENT; /* Method association coded index */
2614 if (!bsearch (&loc, msemt->base, msemt->rows, msemt->row_size, table_locator))
2619 * We may end up in the middle of the rows...
2622 if (loc.idx == mono_metadata_decode_row_col (msemt, start - 1, MONO_METHOD_SEMA_ASSOCIATION))
2628 while (end < msemt->rows) {
2629 mono_metadata_decode_row (msemt, end, cols, MONO_METHOD_SEMA_SIZE);
2630 if (cols [MONO_METHOD_SEMA_ASSOCIATION] != loc.idx)
2639 * mono_metadata_properties_from_typedef:
2640 * @meta: metadata context
2641 * @index: 0-based index (in the TypeDef table) describing a type
2643 * Returns: the 0-based index in the Property table for the properties in the
2644 * type. The last property that belongs to the type (plus 1) is stored
2645 * in the @end_idx pointer.
2648 mono_metadata_properties_from_typedef (MonoImage *meta, guint32 index, guint *end_idx)
2652 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_PROPERTYMAP];
2660 loc.col_idx = MONO_PROPERTY_MAP_PARENT;
2661 loc.idx = index + 1;
2663 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
2666 start = mono_metadata_decode_row_col (tdef, loc.result, MONO_PROPERTY_MAP_PROPERTY_LIST);
2667 if (loc.result + 1 < tdef->rows) {
2668 end = mono_metadata_decode_row_col (tdef, loc.result + 1, MONO_PROPERTY_MAP_PROPERTY_LIST) - 1;
2670 end = meta->tables [MONO_TABLE_PROPERTY].rows;
2678 * mono_metadata_methods_from_property:
2679 * @meta: metadata context
2680 * @index: 0-based index (in the PropertyDef table) describing a property
2682 * Returns: the 0-based index in the MethodDef table for the methods in the
2683 * property. The last method that belongs to the property (plus 1) is stored
2684 * in the @end_idx pointer.
2687 mono_metadata_methods_from_property (MonoImage *meta, guint32 index, guint *end_idx)
2691 guint32 cols [MONO_METHOD_SEMA_SIZE];
2692 MonoTableInfo *msemt = &meta->tables [MONO_TABLE_METHODSEMANTICS];
2699 loc.col_idx = MONO_METHOD_SEMA_ASSOCIATION;
2700 loc.idx = ((index + 1) << HAS_SEMANTICS_BITS) | HAS_SEMANTICS_PROPERTY; /* Method association coded index */
2702 if (!bsearch (&loc, msemt->base, msemt->rows, msemt->row_size, table_locator))
2707 * We may end up in the middle of the rows...
2710 if (loc.idx == mono_metadata_decode_row_col (msemt, start - 1, MONO_METHOD_SEMA_ASSOCIATION))
2716 while (end < msemt->rows) {
2717 mono_metadata_decode_row (msemt, end, cols, MONO_METHOD_SEMA_SIZE);
2718 if (cols [MONO_METHOD_SEMA_ASSOCIATION] != loc.idx)
2727 mono_metadata_implmap_from_method (MonoImage *meta, guint32 method_idx)
2730 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_IMPLMAP];
2736 loc.col_idx = MONO_IMPLMAP_MEMBER;
2737 loc.idx = ((method_idx + 1) << MEMBERFORWD_BITS) | MEMBERFORWD_METHODDEF;
2739 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
2742 return loc.result + 1;
2746 * @image: context where the image is created
2747 * @type_spec: typespec token
2749 * Creates a MonoType representing the TypeSpec indexed by the @type_spec
2753 mono_type_create_from_typespec (MonoImage *image, guint32 type_spec)
2755 guint32 idx = mono_metadata_token_index (type_spec);
2757 guint32 cols [MONO_TYPESPEC_SIZE];
2762 t = &image->tables [MONO_TABLE_TYPESPEC];
2764 mono_metadata_decode_row (t, idx-1, cols, MONO_TYPESPEC_SIZE);
2765 ptr = mono_metadata_blob_heap (image, cols [MONO_TYPESPEC_SIGNATURE]);
2766 len = mono_metadata_decode_value (ptr, &ptr);
2767 type = mono_metadata_parse_type (image, MONO_PARSE_TYPE, 0, ptr, &ptr);
2773 mono_metadata_parse_marshal_spec (MonoImage *image, const char *ptr)
2775 MonoMarshalSpec *res;
2777 const char *start = ptr;
2779 /* fixme: this is incomplete, but I cant find more infos in the specs */
2781 res = g_new0 (MonoMarshalSpec, 1);
2783 len = mono_metadata_decode_value (ptr, &ptr);
2784 res->native = *ptr++;
2786 if (res->native == MONO_NATIVE_LPARRAY) {
2787 if (ptr - start <= len)
2788 res->data.array_data.elem_type = *ptr++;
2789 if (ptr - start <= len)
2790 res->data.array_data.param_num = mono_metadata_decode_value (ptr, &ptr);
2791 if (ptr - start <= len)
2792 res->data.array_data.num_elem = mono_metadata_decode_value (ptr, &ptr);
2795 if (res->native == MONO_NATIVE_BYVALTSTR) {
2796 if (ptr - start <= len)
2797 res->data.array_data.num_elem = mono_metadata_decode_value (ptr, &ptr);
2800 if (res->native == MONO_NATIVE_BYVALARRAY) {
2801 if (ptr - start <= len)
2802 res->data.array_data.num_elem = mono_metadata_decode_value (ptr, &ptr);
2805 if (res->native == MONO_NATIVE_CUSTOM) {
2806 /* skip unused type guid */
2807 len = mono_metadata_decode_value (ptr, &ptr);
2809 /* skip unused native type name */
2810 len = mono_metadata_decode_value (ptr, &ptr);
2812 /* read custom marshaler type name */
2813 len = mono_metadata_decode_value (ptr, &ptr);
2814 res->data.custom_data.custom_name = g_strndup (ptr, len);
2816 /* read cookie string */
2817 len = mono_metadata_decode_value (ptr, &ptr);
2818 res->data.custom_data.cookie = g_strndup (ptr, len);
2825 mono_type_to_unmanaged (MonoType *type, MonoMarshalSpec *mspec, gboolean as_field,
2826 gboolean unicode, MonoMarshalConv *conv)
2828 MonoMarshalConv dummy_conv;
2834 *conv = MONO_MARSHAL_CONV_NONE;
2837 return MONO_NATIVE_UINT;
2841 case MONO_TYPE_BOOLEAN:
2843 switch (mspec->native) {
2844 case MONO_NATIVE_VARIANTBOOL:
2845 *conv = MONO_MARSHAL_CONV_BOOL_VARIANTBOOL;
2846 return MONO_NATIVE_VARIANTBOOL;
2847 case MONO_NATIVE_BOOLEAN:
2848 *conv = MONO_MARSHAL_CONV_BOOL_I4;
2849 return MONO_NATIVE_BOOLEAN;
2850 case MONO_NATIVE_U1:
2851 return MONO_NATIVE_U1;
2853 g_error ("cant marshal bool to native type %02x", mspec->native);
2856 *conv = MONO_MARSHAL_CONV_BOOL_I4;
2857 return MONO_NATIVE_BOOLEAN;
2858 case MONO_TYPE_CHAR: return MONO_NATIVE_U2;
2859 case MONO_TYPE_I1: return MONO_NATIVE_I1;
2860 case MONO_TYPE_U1: return MONO_NATIVE_U1;
2861 case MONO_TYPE_I2: return MONO_NATIVE_I2;
2862 case MONO_TYPE_U2: return MONO_NATIVE_U2;
2863 case MONO_TYPE_I4: return MONO_NATIVE_I4;
2864 case MONO_TYPE_U4: return MONO_NATIVE_U4;
2865 case MONO_TYPE_I8: return MONO_NATIVE_I8;
2866 case MONO_TYPE_U8: return MONO_NATIVE_U8;
2867 case MONO_TYPE_R4: return MONO_NATIVE_R4;
2868 case MONO_TYPE_R8: return MONO_NATIVE_R8;
2869 case MONO_TYPE_STRING:
2871 switch (mspec->native) {
2872 case MONO_NATIVE_BSTR:
2873 *conv = MONO_MARSHAL_CONV_STR_BSTR;
2874 return MONO_NATIVE_BSTR;
2875 case MONO_NATIVE_LPSTR:
2876 *conv = MONO_MARSHAL_CONV_STR_LPSTR;
2877 return MONO_NATIVE_LPSTR;
2878 case MONO_NATIVE_LPWSTR:
2879 *conv = MONO_MARSHAL_CONV_STR_LPWSTR;
2880 return MONO_NATIVE_LPWSTR;
2881 case MONO_NATIVE_LPTSTR:
2882 *conv = MONO_MARSHAL_CONV_STR_LPTSTR;
2883 return MONO_NATIVE_LPTSTR;
2884 case MONO_NATIVE_ANSIBSTR:
2885 *conv = MONO_MARSHAL_CONV_STR_ANSIBSTR;
2886 return MONO_NATIVE_ANSIBSTR;
2887 case MONO_NATIVE_TBSTR:
2888 *conv = MONO_MARSHAL_CONV_STR_TBSTR;
2889 return MONO_NATIVE_TBSTR;
2890 case MONO_NATIVE_BYVALTSTR:
2892 *conv = MONO_MARSHAL_CONV_STR_BYVALWSTR;
2894 *conv = MONO_MARSHAL_CONV_STR_BYVALSTR;
2895 return MONO_NATIVE_BYVALTSTR;
2897 g_error ("cant marshal string to native type %02x", mspec->native);
2900 *conv = MONO_MARSHAL_CONV_STR_LPTSTR;
2901 return MONO_NATIVE_LPTSTR;
2902 case MONO_TYPE_PTR: return MONO_NATIVE_UINT;
2903 case MONO_TYPE_VALUETYPE: /*FIXME*/
2904 if (type->data.klass->enumtype) {
2905 t = type->data.klass->enum_basetype->type;
2908 return MONO_NATIVE_STRUCT;
2909 case MONO_TYPE_SZARRAY:
2910 case MONO_TYPE_ARRAY:
2912 switch (mspec->native) {
2913 case MONO_NATIVE_BYVALARRAY:
2914 *conv = MONO_MARSHAL_CONV_ARRAY_BYVALARRAY;
2915 return MONO_NATIVE_BYVALARRAY;
2916 case MONO_NATIVE_SAFEARRAY:
2917 *conv = MONO_MARSHAL_CONV_ARRAY_SAVEARRAY;
2918 return MONO_NATIVE_SAFEARRAY;
2919 case MONO_NATIVE_LPARRAY:
2920 *conv = MONO_MARSHAL_CONV_ARRAY_LPARRAY;
2921 return MONO_NATIVE_LPARRAY;
2923 g_error ("cant marshal array as native type %02x", mspec->native);
2927 *conv = MONO_MARSHAL_CONV_ARRAY_LPARRAY;
2928 return MONO_NATIVE_LPARRAY;
2929 case MONO_TYPE_I: return MONO_NATIVE_INT;
2930 case MONO_TYPE_U: return MONO_NATIVE_UINT;
2931 case MONO_TYPE_CLASS:
2932 case MONO_TYPE_OBJECT: {
2933 /* FIXME : we need to handle ArrayList and StringBuilder here, probably */
2935 switch (mspec->native) {
2936 case MONO_NATIVE_STRUCT:
2937 return MONO_NATIVE_STRUCT;
2938 case MONO_NATIVE_INTERFACE:
2939 *conv = MONO_MARSHAL_CONV_OBJECT_INTERFACE;
2940 return MONO_NATIVE_INTERFACE;
2941 case MONO_NATIVE_IDISPATCH:
2942 *conv = MONO_MARSHAL_CONV_OBJECT_IDISPATCH;
2943 return MONO_NATIVE_IDISPATCH;
2944 case MONO_NATIVE_IUNKNOWN:
2945 *conv = MONO_MARSHAL_CONV_OBJECT_IUNKNOWN;
2946 return MONO_NATIVE_IUNKNOWN;
2948 g_error ("cant marshal object as native type %02x", mspec->native);
2951 if (t == MONO_TYPE_CLASS && (type->data.klass == mono_defaults.multicastdelegate_class ||
2952 type->data.klass == mono_defaults.delegate_class ||
2953 type->data.klass->parent == mono_defaults.multicastdelegate_class)) {
2954 *conv = MONO_MARSHAL_CONV_DEL_FTN;
2955 return MONO_NATIVE_FUNC;
2957 *conv = MONO_MARSHAL_CONV_OBJECT_STRUCT;
2958 return MONO_NATIVE_STRUCT;
2960 case MONO_TYPE_FNPTR: return MONO_NATIVE_FUNC;
2961 case MONO_TYPE_TYPEDBYREF:
2963 g_error ("type 0x%02x not handled in marshal", t);
2965 return MONO_NATIVE_MAX;
2969 mono_metadata_get_marshal_info (MonoImage *meta, guint32 idx, gboolean is_field)
2972 MonoTableInfo *tdef = &meta->tables [MONO_TABLE_FIELDMARSHAL];
2978 loc.col_idx = MONO_FIELD_MARSHAL_PARENT;
2979 loc.idx = ((idx + 1) << HAS_FIELD_MARSHAL_BITS) | (is_field? HAS_FIELD_MARSHAL_FIELDSREF: HAS_FIELD_MARSHAL_PARAMDEF);
2981 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
2984 return mono_metadata_blob_heap (meta, mono_metadata_decode_row_col (tdef, loc.result, MONO_FIELD_MARSHAL_NATIVE_TYPE));
2988 method_from_method_def_or_ref (MonoImage *m, guint32 tok)
2990 guint32 idx = tok >> METHODDEFORREF_BITS;
2991 switch (tok & METHODDEFORREF_MASK) {
2992 case METHODDEFORREF_METHODDEF:
2993 return mono_get_method (m, MONO_TOKEN_METHOD_DEF | idx, NULL);
2994 case METHODDEFORREF_METHODREF:
2995 return mono_get_method (m, MONO_TOKEN_MEMBER_REF | idx, NULL);
2997 g_assert_not_reached ();
3002 mono_class_get_overrides (MonoImage *image, guint32 type_token, gint32 *num_overrides)
3005 MonoTableInfo *tdef = &image->tables [MONO_TABLE_METHODIMPL];
3008 guint32 cols [MONO_METHODIMPL_SIZE];
3009 MonoMethod **result;
3018 loc.col_idx = MONO_METHODIMPL_CLASS;
3019 loc.idx = mono_metadata_token_index (type_token);
3021 if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
3027 * We may end up in the middle of the rows...
3030 if (loc.idx == mono_metadata_decode_row_col (tdef, start - 1, MONO_METHODIMPL_CLASS))
3035 while (end < tdef->rows) {
3036 if (loc.idx == mono_metadata_decode_row_col (tdef, end, MONO_METHODIMPL_CLASS))
3042 result = g_new (MonoMethod*, num * 2);
3043 for (i = 0; i < num; ++i) {
3044 mono_metadata_decode_row (tdef, start + i, cols, MONO_METHODIMPL_SIZE);
3045 result [i * 2] = method_from_method_def_or_ref (image, cols [MONO_METHODIMPL_DECLARATION]);
3046 result [i * 2 + 1] = method_from_method_def_or_ref (image, cols [MONO_METHODIMPL_BODY]);
3050 *num_overrides = num;
3055 * mono_guid_to_string:
3057 * Converts a 16 byte Microsoft GUID to the standard string representation.
3060 mono_guid_to_string (const guint8 *guid)
3062 return g_strdup_printf ("%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
3063 guid[3], guid[2], guid[1], guid[0],
3067 guid[10], guid[11], guid[12], guid[13], guid[14], guid[15]);