/mono/metadata/metadata.c
C | 6275 lines | 4101 code | 755 blank | 1419 comment | 812 complexity | bf8f29fef60437e41ff09079d207fef3 MD5 | raw file
Possible License(s): Unlicense, Apache-2.0, LGPL-2.0, MPL-2.0-no-copyleft-exception, CC-BY-SA-3.0, GPL-2.0
- /*
- * metadata.c: Routines for accessing the metadata
- *
- * Authors:
- * Miguel de Icaza (miguel@ximian.com)
- * Paolo Molaro (lupus@ximian.com)
- *
- * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
- * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
- */
- #include <config.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <glib.h>
- #include "metadata.h"
- #include "tabledefs.h"
- #include "mono-endian.h"
- #include "cil-coff.h"
- #include "tokentype.h"
- #include "metadata-internals.h"
- #include "class-internals.h"
- #include "verify-internals.h"
- #include "class.h"
- #include "marshal.h"
- #include "debug-helpers.h"
- #include <mono/utils/mono-error-internals.h>
-
- /* Auxiliary structure used for caching inflated signatures */
- typedef struct {
- MonoMethodSignature *sig;
- MonoGenericContext context;
- } MonoInflatedMethodSignature;
- static gboolean do_mono_metadata_parse_type (MonoType *type, MonoImage *m, MonoGenericContainer *container, gboolean transient,
- const char *ptr, const char **rptr);
- static gboolean do_mono_metadata_type_equal (MonoType *t1, MonoType *t2, gboolean signature_only);
- static gboolean mono_metadata_class_equal (MonoClass *c1, MonoClass *c2, gboolean signature_only);
- static gboolean mono_metadata_fnptr_equal (MonoMethodSignature *s1, MonoMethodSignature *s2, gboolean signature_only);
- static gboolean _mono_metadata_generic_class_equal (const MonoGenericClass *g1, const MonoGenericClass *g2,
- gboolean signature_only);
- static void free_generic_inst (MonoGenericInst *ginst);
- static void free_generic_class (MonoGenericClass *ginst);
- static void free_inflated_method (MonoMethodInflated *method);
- static void free_inflated_signature (MonoInflatedMethodSignature *sig);
- static void mono_metadata_field_info_full (MonoImage *meta, guint32 index, guint32 *offset, guint32 *rva, MonoMarshalSpec **marshal_spec, gboolean alloc_from_image);
- /*
- * This enumeration is used to describe the data types in the metadata
- * tables
- */
- enum {
- MONO_MT_END,
- /* Sized elements */
- MONO_MT_UINT32,
- MONO_MT_UINT16,
- MONO_MT_UINT8,
- /* Index into Blob heap */
- MONO_MT_BLOB_IDX,
- /* Index into String heap */
- MONO_MT_STRING_IDX,
- /* GUID index */
- MONO_MT_GUID_IDX,
- /* Pointer into a table */
- MONO_MT_TABLE_IDX,
- /* HasConstant:Parent pointer (Param, Field or Property) */
- MONO_MT_CONST_IDX,
- /* HasCustomAttribute index. Indexes any table except CustomAttribute */
- MONO_MT_HASCAT_IDX,
-
- /* CustomAttributeType encoded index */
- MONO_MT_CAT_IDX,
- /* HasDeclSecurity index: TypeDef Method or Assembly */
- MONO_MT_HASDEC_IDX,
- /* Implementation coded index: File, Export AssemblyRef */
- MONO_MT_IMPL_IDX,
- /* HasFieldMarshal coded index: Field or Param table */
- MONO_MT_HFM_IDX,
- /* MemberForwardedIndex: Field or Method */
- MONO_MT_MF_IDX,
- /* TypeDefOrRef coded index: typedef, typeref, typespec */
- MONO_MT_TDOR_IDX,
- /* MemberRefParent coded index: typeref, moduleref, method, memberref, typesepc, typedef */
- MONO_MT_MRP_IDX,
- /* MethodDefOrRef coded index: Method or Member Ref table */
- MONO_MT_MDOR_IDX,
- /* HasSemantic coded index: Event or Property */
- MONO_MT_HS_IDX,
- /* ResolutionScope coded index: Module, ModuleRef, AssemblytRef, TypeRef */
- MONO_MT_RS_IDX
- };
- const static unsigned char TableSchemas [] = {
- #define ASSEMBLY_SCHEMA_OFFSET 0
- MONO_MT_UINT32, /* "HashId" }, */
- MONO_MT_UINT16, /* "Major" }, */
- MONO_MT_UINT16, /* "Minor" }, */
- MONO_MT_UINT16, /* "BuildNumber" }, */
- MONO_MT_UINT16, /* "RevisionNumber" }, */
- MONO_MT_UINT32, /* "Flags" }, */
- MONO_MT_BLOB_IDX, /* "PublicKey" }, */
- MONO_MT_STRING_IDX, /* "Name" }, */
- MONO_MT_STRING_IDX, /* "Culture" }, */
- MONO_MT_END,
- #define ASSEMBLYOS_SCHEMA_OFFSET ASSEMBLY_SCHEMA_OFFSET + 10
- MONO_MT_UINT32, /* "OSPlatformID" }, */
- MONO_MT_UINT32, /* "OSMajor" }, */
- MONO_MT_UINT32, /* "OSMinor" }, */
- MONO_MT_END,
- #define ASSEMBLYPROC_SCHEMA_OFFSET ASSEMBLYOS_SCHEMA_OFFSET + 4
- MONO_MT_UINT32, /* "Processor" }, */
- MONO_MT_END,
- #define ASSEMBLYREF_SCHEMA_OFFSET ASSEMBLYPROC_SCHEMA_OFFSET + 2
- MONO_MT_UINT16, /* "Major" }, */
- MONO_MT_UINT16, /* "Minor" }, */
- MONO_MT_UINT16, /* "Build" }, */
- MONO_MT_UINT16, /* "Revision" }, */
- MONO_MT_UINT32, /* "Flags" }, */
- MONO_MT_BLOB_IDX, /* "PublicKeyOrToken" }, */
- MONO_MT_STRING_IDX, /* "Name" }, */
- MONO_MT_STRING_IDX, /* "Culture" }, */
- MONO_MT_BLOB_IDX, /* "HashValue" }, */
- MONO_MT_END,
- #define ASSEMBLYREFOS_SCHEMA_OFFSET ASSEMBLYREF_SCHEMA_OFFSET + 10
- MONO_MT_UINT32, /* "OSPlatformID" }, */
- MONO_MT_UINT32, /* "OSMajorVersion" }, */
- MONO_MT_UINT32, /* "OSMinorVersion" }, */
- MONO_MT_TABLE_IDX, /* "AssemblyRef:AssemblyRef" }, */
- MONO_MT_END,
- #define ASSEMBLYREFPROC_SCHEMA_OFFSET ASSEMBLYREFOS_SCHEMA_OFFSET + 5
- MONO_MT_UINT32, /* "Processor" }, */
- MONO_MT_TABLE_IDX, /* "AssemblyRef:AssemblyRef" }, */
- MONO_MT_END,
- #define CLASS_LAYOUT_SCHEMA_OFFSET ASSEMBLYREFPROC_SCHEMA_OFFSET + 3
- MONO_MT_UINT16, /* "PackingSize" }, */
- MONO_MT_UINT32, /* "ClassSize" }, */
- MONO_MT_TABLE_IDX, /* "Parent:TypeDef" }, */
- MONO_MT_END,
- #define CONSTANT_SCHEMA_OFFSET CLASS_LAYOUT_SCHEMA_OFFSET + 4
- MONO_MT_UINT8, /* "Type" }, */
- MONO_MT_UINT8, /* "PaddingZero" }, */
- MONO_MT_CONST_IDX, /* "Parent" }, */
- MONO_MT_BLOB_IDX, /* "Value" }, */
- MONO_MT_END,
- #define CUSTOM_ATTR_SCHEMA_OFFSET CONSTANT_SCHEMA_OFFSET + 5
- MONO_MT_HASCAT_IDX, /* "Parent" }, */
- MONO_MT_CAT_IDX, /* "Type" }, */
- MONO_MT_BLOB_IDX, /* "Value" }, */
- MONO_MT_END,
- #define DECL_SEC_SCHEMA_OFFSET CUSTOM_ATTR_SCHEMA_OFFSET + 4
- MONO_MT_UINT16, /* "Action" }, */
- MONO_MT_HASDEC_IDX, /* "Parent" }, */
- MONO_MT_BLOB_IDX, /* "PermissionSet" }, */
- MONO_MT_END,
- #define EVENTMAP_SCHEMA_OFFSET DECL_SEC_SCHEMA_OFFSET + 4
- MONO_MT_TABLE_IDX, /* "Parent:TypeDef" }, */
- MONO_MT_TABLE_IDX, /* "EventList:Event" }, */
- MONO_MT_END,
- #define EVENT_SCHEMA_OFFSET EVENTMAP_SCHEMA_OFFSET + 3
- MONO_MT_UINT16, /* "EventFlags#EventAttribute" }, */
- MONO_MT_STRING_IDX, /* "Name" }, */
- MONO_MT_TDOR_IDX, /* "EventType" }, TypeDef or TypeRef or TypeSpec */
- MONO_MT_END,
- #define EVENT_POINTER_SCHEMA_OFFSET EVENT_SCHEMA_OFFSET + 4
- MONO_MT_TABLE_IDX, /* "Event" }, */
- MONO_MT_END,
- #define EXPORTED_TYPE_SCHEMA_OFFSET EVENT_POINTER_SCHEMA_OFFSET + 2
- MONO_MT_UINT32, /* "Flags" }, */
- MONO_MT_TABLE_IDX, /* "TypeDefId" }, */
- MONO_MT_STRING_IDX, /* "TypeName" }, */
- MONO_MT_STRING_IDX, /* "TypeNameSpace" }, */
- MONO_MT_IMPL_IDX, /* "Implementation" }, */
- MONO_MT_END,
- #define FIELD_SCHEMA_OFFSET EXPORTED_TYPE_SCHEMA_OFFSET + 6
- MONO_MT_UINT16, /* "Flags" }, */
- MONO_MT_STRING_IDX, /* "Name" }, */
- MONO_MT_BLOB_IDX, /* "Signature" }, */
- MONO_MT_END,
- #define FIELD_LAYOUT_SCHEMA_OFFSET FIELD_SCHEMA_OFFSET + 4
- MONO_MT_UINT32, /* "Offset" }, */
- MONO_MT_TABLE_IDX, /* "Field:Field" }, */
- MONO_MT_END,
- #define FIELD_MARSHAL_SCHEMA_OFFSET FIELD_LAYOUT_SCHEMA_OFFSET + 3
- MONO_MT_HFM_IDX, /* "Parent" }, */
- MONO_MT_BLOB_IDX, /* "NativeType" }, */
- MONO_MT_END,
- #define FIELD_RVA_SCHEMA_OFFSET FIELD_MARSHAL_SCHEMA_OFFSET + 3
- MONO_MT_UINT32, /* "RVA" }, */
- MONO_MT_TABLE_IDX, /* "Field:Field" }, */
- MONO_MT_END,
- #define FIELD_POINTER_SCHEMA_OFFSET FIELD_RVA_SCHEMA_OFFSET + 3
- MONO_MT_TABLE_IDX, /* "Field" }, */
- MONO_MT_END,
- #define FILE_SCHEMA_OFFSET FIELD_POINTER_SCHEMA_OFFSET + 2
- MONO_MT_UINT32, /* "Flags" }, */
- MONO_MT_STRING_IDX, /* "Name" }, */
- MONO_MT_BLOB_IDX, /* "Value" }, */
- MONO_MT_END,
- #define IMPLMAP_SCHEMA_OFFSET FILE_SCHEMA_OFFSET + 4
- MONO_MT_UINT16, /* "MappingFlag" }, */
- MONO_MT_MF_IDX, /* "MemberForwarded" }, */
- MONO_MT_STRING_IDX, /* "ImportName" }, */
- MONO_MT_TABLE_IDX, /* "ImportScope:ModuleRef" }, */
- MONO_MT_END,
- #define IFACEMAP_SCHEMA_OFFSET IMPLMAP_SCHEMA_OFFSET + 5
- MONO_MT_TABLE_IDX, /* "Class:TypeDef" }, */
- MONO_MT_TDOR_IDX, /* "Interface=TypeDefOrRef" }, */
- MONO_MT_END,
- #define MANIFEST_SCHEMA_OFFSET IFACEMAP_SCHEMA_OFFSET + 3
- MONO_MT_UINT32, /* "Offset" }, */
- MONO_MT_UINT32, /* "Flags" }, */
- MONO_MT_STRING_IDX, /* "Name" }, */
- MONO_MT_IMPL_IDX, /* "Implementation" }, */
- MONO_MT_END,
- #define MEMBERREF_SCHEMA_OFFSET MANIFEST_SCHEMA_OFFSET + 5
- MONO_MT_MRP_IDX, /* "Class" }, */
- MONO_MT_STRING_IDX, /* "Name" }, */
- MONO_MT_BLOB_IDX, /* "Signature" }, */
- MONO_MT_END,
- #define METHOD_SCHEMA_OFFSET MEMBERREF_SCHEMA_OFFSET + 4
- MONO_MT_UINT32, /* "RVA" }, */
- MONO_MT_UINT16, /* "ImplFlags#MethodImplAttributes" }, */
- MONO_MT_UINT16, /* "Flags#MethodAttribute" }, */
- MONO_MT_STRING_IDX, /* "Name" }, */
- MONO_MT_BLOB_IDX, /* "Signature" }, */
- MONO_MT_TABLE_IDX, /* "ParamList:Param" }, */
- MONO_MT_END,
- #define METHOD_IMPL_SCHEMA_OFFSET METHOD_SCHEMA_OFFSET + 7
- MONO_MT_TABLE_IDX, /* "Class:TypeDef" }, */
- MONO_MT_MDOR_IDX, /* "MethodBody" }, */
- MONO_MT_MDOR_IDX, /* "MethodDeclaration" }, */
- MONO_MT_END,
- #define METHOD_SEMA_SCHEMA_OFFSET METHOD_IMPL_SCHEMA_OFFSET + 4
- MONO_MT_UINT16, /* "MethodSemantic" }, */
- MONO_MT_TABLE_IDX, /* "Method:Method" }, */
- MONO_MT_HS_IDX, /* "Association" }, */
- MONO_MT_END,
- #define METHOD_POINTER_SCHEMA_OFFSET METHOD_SEMA_SCHEMA_OFFSET + 4
- MONO_MT_TABLE_IDX, /* "Method" }, */
- MONO_MT_END,
- #define MODULE_SCHEMA_OFFSET METHOD_POINTER_SCHEMA_OFFSET + 2
- MONO_MT_UINT16, /* "Generation" }, */
- MONO_MT_STRING_IDX, /* "Name" }, */
- MONO_MT_GUID_IDX, /* "MVID" }, */
- MONO_MT_GUID_IDX, /* "EncID" }, */
- MONO_MT_GUID_IDX, /* "EncBaseID" }, */
- MONO_MT_END,
- #define MODULEREF_SCHEMA_OFFSET MODULE_SCHEMA_OFFSET + 6
- MONO_MT_STRING_IDX, /* "Name" }, */
- MONO_MT_END,
- #define NESTED_CLASS_SCHEMA_OFFSET MODULEREF_SCHEMA_OFFSET + 2
- MONO_MT_TABLE_IDX, /* "NestedClass:TypeDef" }, */
- MONO_MT_TABLE_IDX, /* "EnclosingClass:TypeDef" }, */
- MONO_MT_END,
- #define PARAM_SCHEMA_OFFSET NESTED_CLASS_SCHEMA_OFFSET + 3
- MONO_MT_UINT16, /* "Flags" }, */
- MONO_MT_UINT16, /* "Sequence" }, */
- MONO_MT_STRING_IDX, /* "Name" }, */
- MONO_MT_END,
- #define PARAM_POINTER_SCHEMA_OFFSET PARAM_SCHEMA_OFFSET + 4
- MONO_MT_TABLE_IDX, /* "Param" }, */
- MONO_MT_END,
- #define PROPERTY_SCHEMA_OFFSET PARAM_POINTER_SCHEMA_OFFSET + 2
- MONO_MT_UINT16, /* "Flags" }, */
- MONO_MT_STRING_IDX, /* "Name" }, */
- MONO_MT_BLOB_IDX, /* "Type" }, */
- MONO_MT_END,
- #define PROPERTY_POINTER_SCHEMA_OFFSET PROPERTY_SCHEMA_OFFSET + 4
- MONO_MT_TABLE_IDX, /* "Property" }, */
- MONO_MT_END,
- #define PROPERTY_MAP_SCHEMA_OFFSET PROPERTY_POINTER_SCHEMA_OFFSET + 2
- MONO_MT_TABLE_IDX, /* "Parent:TypeDef" }, */
- MONO_MT_TABLE_IDX, /* "PropertyList:Property" }, */
- MONO_MT_END,
- #define STDALON_SIG_SCHEMA_OFFSET PROPERTY_MAP_SCHEMA_OFFSET + 3
- MONO_MT_BLOB_IDX, /* "Signature" }, */
- MONO_MT_END,
- #define TYPEDEF_SCHEMA_OFFSET STDALON_SIG_SCHEMA_OFFSET + 2
- MONO_MT_UINT32, /* "Flags" }, */
- MONO_MT_STRING_IDX, /* "Name" }, */
- MONO_MT_STRING_IDX, /* "Namespace" }, */
- MONO_MT_TDOR_IDX, /* "Extends" }, */
- MONO_MT_TABLE_IDX, /* "FieldList:Field" }, */
- MONO_MT_TABLE_IDX, /* "MethodList:Method" }, */
- MONO_MT_END,
- #define TYPEREF_SCHEMA_OFFSET TYPEDEF_SCHEMA_OFFSET + 7
- MONO_MT_RS_IDX, /* "ResolutionScope=ResolutionScope" }, */
- MONO_MT_STRING_IDX, /* "Name" }, */
- MONO_MT_STRING_IDX, /* "Namespace" }, */
- MONO_MT_END,
- #define TYPESPEC_SCHEMA_OFFSET TYPEREF_SCHEMA_OFFSET + 4
- MONO_MT_BLOB_IDX, /* "Signature" }, */
- MONO_MT_END,
- #define GENPARAM_SCHEMA_OFFSET TYPESPEC_SCHEMA_OFFSET + 2
- MONO_MT_UINT16, /* "Number" }, */
- MONO_MT_UINT16, /* "Flags" }, */
- MONO_MT_TABLE_IDX, /* "Owner" }, TypeDef or MethodDef */
- MONO_MT_STRING_IDX, /* "Name" }, */
- MONO_MT_END,
- #define METHOD_SPEC_SCHEMA_OFFSET GENPARAM_SCHEMA_OFFSET + 5
- MONO_MT_MDOR_IDX, /* "Method" }, */
- MONO_MT_BLOB_IDX, /* "Signature" }, */
- MONO_MT_END,
- #define GEN_CONSTRAINT_SCHEMA_OFFSET METHOD_SPEC_SCHEMA_OFFSET + 3
- MONO_MT_TABLE_IDX, /* "GenericParam" }, */
- MONO_MT_TDOR_IDX, /* "Constraint" }, */
- MONO_MT_END,
- #define NULL_SCHEMA_OFFSET GEN_CONSTRAINT_SCHEMA_OFFSET + 3
- MONO_MT_END
- };
- /* Must be the same order as MONO_TABLE_* */
- const static unsigned char
- table_description [] = {
- MODULE_SCHEMA_OFFSET,
- TYPEREF_SCHEMA_OFFSET,
- TYPEDEF_SCHEMA_OFFSET,
- FIELD_POINTER_SCHEMA_OFFSET,
- FIELD_SCHEMA_OFFSET,
- METHOD_POINTER_SCHEMA_OFFSET,
- METHOD_SCHEMA_OFFSET,
- PARAM_POINTER_SCHEMA_OFFSET,
- PARAM_SCHEMA_OFFSET,
- IFACEMAP_SCHEMA_OFFSET,
- MEMBERREF_SCHEMA_OFFSET, /* 0xa */
- CONSTANT_SCHEMA_OFFSET,
- CUSTOM_ATTR_SCHEMA_OFFSET,
- FIELD_MARSHAL_SCHEMA_OFFSET,
- DECL_SEC_SCHEMA_OFFSET,
- CLASS_LAYOUT_SCHEMA_OFFSET,
- FIELD_LAYOUT_SCHEMA_OFFSET, /* 0x10 */
- STDALON_SIG_SCHEMA_OFFSET,
- EVENTMAP_SCHEMA_OFFSET,
- EVENT_POINTER_SCHEMA_OFFSET,
- EVENT_SCHEMA_OFFSET,
- PROPERTY_MAP_SCHEMA_OFFSET,
- PROPERTY_POINTER_SCHEMA_OFFSET,
- PROPERTY_SCHEMA_OFFSET,
- METHOD_SEMA_SCHEMA_OFFSET,
- METHOD_IMPL_SCHEMA_OFFSET,
- MODULEREF_SCHEMA_OFFSET, /* 0x1a */
- TYPESPEC_SCHEMA_OFFSET,
- IMPLMAP_SCHEMA_OFFSET,
- FIELD_RVA_SCHEMA_OFFSET,
- NULL_SCHEMA_OFFSET,
- NULL_SCHEMA_OFFSET,
- ASSEMBLY_SCHEMA_OFFSET, /* 0x20 */
- ASSEMBLYPROC_SCHEMA_OFFSET,
- ASSEMBLYOS_SCHEMA_OFFSET,
- ASSEMBLYREF_SCHEMA_OFFSET,
- ASSEMBLYREFPROC_SCHEMA_OFFSET,
- ASSEMBLYREFOS_SCHEMA_OFFSET,
- FILE_SCHEMA_OFFSET,
- EXPORTED_TYPE_SCHEMA_OFFSET,
- MANIFEST_SCHEMA_OFFSET,
- NESTED_CLASS_SCHEMA_OFFSET,
- GENPARAM_SCHEMA_OFFSET, /* 0x2a */
- METHOD_SPEC_SCHEMA_OFFSET,
- GEN_CONSTRAINT_SCHEMA_OFFSET
- };
- #ifdef HAVE_ARRAY_ELEM_INIT
- #define MSGSTRFIELD(line) MSGSTRFIELD1(line)
- #define MSGSTRFIELD1(line) str##line
- static const struct msgstr_t {
- #define TABLEDEF(a,b) char MSGSTRFIELD(__LINE__) [sizeof (b)];
- #include "mono/cil/tables.def"
- #undef TABLEDEF
- } tablestr = {
- #define TABLEDEF(a,b) b,
- #include "mono/cil/tables.def"
- #undef TABLEDEF
- };
- static const gint16 tableidx [] = {
- #define TABLEDEF(a,b) [a] = offsetof (struct msgstr_t, MSGSTRFIELD(__LINE__)),
- #include "mono/cil/tables.def"
- #undef TABLEDEF
- };
- #else
- #define TABLEDEF(a,b) b,
- static const char* const
- mono_tables_names [] = {
- #include "mono/cil/tables.def"
- NULL
- };
- #endif
- /**
- * mono_meta_table_name:
- * @table: table index
- *
- * Returns the name of the given ECMA metadata logical format table
- * as described in ECMA 335, Partition II, Section 22.
- *
- * Returns: the name for the @table index
- */
- const char *
- mono_meta_table_name (int table)
- {
- if ((table < 0) || (table > MONO_TABLE_LAST))
- return "";
- #ifdef HAVE_ARRAY_ELEM_INIT
- return (const char*)&tablestr + tableidx [table];
- #else
- return mono_tables_names [table];
- #endif
- }
- /* The guy who wrote the spec for this should not be allowed near a
- * computer again.
-
- If e is a coded token(see clause 23.1.7) that points into table ti out of n possible tables t0, .. tn-1,
- then it is stored as e << (log n) & tag{ t0, .. tn-1}[ ti] using 2 bytes if the maximum number of
- rows of tables t0, ..tn-1, is less than 2^16 - (log n), and using 4 bytes otherwise. The family of
- finite maps tag{ t0, ..tn-1} is defined below. Note that to decode a physical row, you need the
- inverse of this mapping.
- */
- #define rtsize(s,b) (((s) < (1 << (b)) ? 2 : 4))
- #define idx_size(tableidx) (meta->tables [(tableidx)].rows < 65536 ? 2 : 4)
- /* Reference: Partition II - 23.2.6 */
- /*
- * mono_metadata_compute_size:
- * @meta: metadata context
- * @tableindex: metadata table number
- * @result_bitfield: pointer to guint32 where to store additional info
- *
- * mono_metadata_compute_size() computes the lenght in bytes of a single
- * row in a metadata table. The size of each column is encoded in the
- * @result_bitfield return value along with the number of columns in the table.
- * the resulting bitfield should be handed to the mono_metadata_table_size()
- * and mono_metadata_table_count() macros.
- * This is a Mono runtime internal only function.
- */
- int
- mono_metadata_compute_size (MonoImage *meta, int tableindex, guint32 *result_bitfield)
- {
- guint32 bitfield = 0;
- int size = 0, field_size = 0;
- int i, n, code;
- int shift = 0;
- const unsigned char *description = TableSchemas + table_description [tableindex];
- for (i = 0; (code = description [i]) != MONO_MT_END; i++){
- switch (code){
- case MONO_MT_UINT32:
- field_size = 4; break;
-
- case MONO_MT_UINT16:
- field_size = 2; break;
-
- case MONO_MT_UINT8:
- field_size = 1; break;
-
- case MONO_MT_BLOB_IDX:
- field_size = meta->idx_blob_wide ? 4 : 2; break;
-
- case MONO_MT_STRING_IDX:
- field_size = meta->idx_string_wide ? 4 : 2; break;
-
- case MONO_MT_GUID_IDX:
- field_size = meta->idx_guid_wide ? 4 : 2; break;
- case MONO_MT_TABLE_IDX:
- /* Uhm, a table index can point to other tables besides the current one
- * so, it's not correct to use the rowcount of the current table to
- * get the size for this column - lupus
- */
- switch (tableindex) {
- case MONO_TABLE_ASSEMBLYREFOS:
- g_assert (i == 3);
- field_size = idx_size (MONO_TABLE_ASSEMBLYREF); break;
- case MONO_TABLE_ASSEMBLYREFPROCESSOR:
- g_assert (i == 1);
- field_size = idx_size (MONO_TABLE_ASSEMBLYREF); break;
- case MONO_TABLE_CLASSLAYOUT:
- g_assert (i == 2);
- field_size = idx_size (MONO_TABLE_TYPEDEF); break;
- case MONO_TABLE_EVENTMAP:
- g_assert (i == 0 || i == 1);
- field_size = i ? idx_size (MONO_TABLE_EVENT):
- idx_size(MONO_TABLE_TYPEDEF);
- break;
- case MONO_TABLE_EVENT_POINTER:
- g_assert (i == 0);
- field_size = idx_size (MONO_TABLE_EVENT); break;
- case MONO_TABLE_EXPORTEDTYPE:
- g_assert (i == 1);
- /* the index is in another metadata file, so it must be 4 */
- field_size = 4; break;
- case MONO_TABLE_FIELDLAYOUT:
- g_assert (i == 1);
- field_size = idx_size (MONO_TABLE_FIELD); break;
- case MONO_TABLE_FIELDRVA:
- g_assert (i == 1);
- field_size = idx_size (MONO_TABLE_FIELD); break;
- case MONO_TABLE_FIELD_POINTER:
- g_assert (i == 0);
- field_size = idx_size (MONO_TABLE_FIELD); break;
- case MONO_TABLE_IMPLMAP:
- g_assert (i == 3);
- field_size = idx_size (MONO_TABLE_MODULEREF); break;
- case MONO_TABLE_INTERFACEIMPL:
- g_assert (i == 0);
- field_size = idx_size (MONO_TABLE_TYPEDEF); break;
- case MONO_TABLE_METHOD:
- g_assert (i == 5);
- field_size = idx_size (MONO_TABLE_PARAM); break;
- case MONO_TABLE_METHODIMPL:
- g_assert (i == 0);
- field_size = idx_size (MONO_TABLE_TYPEDEF); break;
- case MONO_TABLE_METHODSEMANTICS:
- g_assert (i == 1);
- field_size = idx_size (MONO_TABLE_METHOD); break;
- case MONO_TABLE_METHOD_POINTER:
- g_assert (i == 0);
- field_size = idx_size (MONO_TABLE_METHOD); break;
- case MONO_TABLE_NESTEDCLASS:
- g_assert (i == 0 || i == 1);
- field_size = idx_size (MONO_TABLE_TYPEDEF); break;
- case MONO_TABLE_PARAM_POINTER:
- g_assert (i == 0);
- field_size = idx_size (MONO_TABLE_PARAM); break;
- case MONO_TABLE_PROPERTYMAP:
- g_assert (i == 0 || i == 1);
- field_size = i ? idx_size (MONO_TABLE_PROPERTY):
- idx_size(MONO_TABLE_TYPEDEF);
- break;
- case MONO_TABLE_PROPERTY_POINTER:
- g_assert (i == 0);
- field_size = idx_size (MONO_TABLE_PROPERTY); break;
- case MONO_TABLE_TYPEDEF:
- g_assert (i == 4 || i == 5);
- field_size = i == 4 ? idx_size (MONO_TABLE_FIELD):
- idx_size(MONO_TABLE_METHOD);
- break;
- case MONO_TABLE_GENERICPARAM:
- g_assert (i == 2);
- n = MAX (meta->tables [MONO_TABLE_METHOD].rows, meta->tables [MONO_TABLE_TYPEDEF].rows);
- /*This is a coded token for 2 tables, so takes 1 bit */
- field_size = rtsize (n, 16 - MONO_TYPEORMETHOD_BITS);
- break;
- case MONO_TABLE_GENERICPARAMCONSTRAINT:
- g_assert (i == 0);
- field_size = idx_size (MONO_TABLE_GENERICPARAM);
- break;
-
- default:
- g_error ("Can't handle MONO_MT_TABLE_IDX for table %d element %d", tableindex, i);
- }
- break;
- /*
- * HasConstant: ParamDef, FieldDef, Property
- */
- case MONO_MT_CONST_IDX:
- n = MAX (meta->tables [MONO_TABLE_PARAM].rows,
- meta->tables [MONO_TABLE_FIELD].rows);
- n = MAX (n, meta->tables [MONO_TABLE_PROPERTY].rows);
- /* 2 bits to encode tag */
- field_size = rtsize (n, 16-2);
- break;
- /*
- * HasCustomAttribute: points to any table but
- * itself.
- */
- case MONO_MT_HASCAT_IDX:
- /*
- * We believe that since the signature and
- * permission are indexing the Blob heap,
- * we should consider the blob size first
- */
- /* I'm not a believer - lupus
- if (meta->idx_blob_wide){
- field_size = 4;
- break;
- }*/
-
- n = MAX (meta->tables [MONO_TABLE_METHOD].rows,
- meta->tables [MONO_TABLE_FIELD].rows);
- n = MAX (n, meta->tables [MONO_TABLE_TYPEREF].rows);
- n = MAX (n, meta->tables [MONO_TABLE_TYPEDEF].rows);
- n = MAX (n, meta->tables [MONO_TABLE_PARAM].rows);
- n = MAX (n, meta->tables [MONO_TABLE_INTERFACEIMPL].rows);
- n = MAX (n, meta->tables [MONO_TABLE_MEMBERREF].rows);
- n = MAX (n, meta->tables [MONO_TABLE_MODULE].rows);
- n = MAX (n, meta->tables [MONO_TABLE_DECLSECURITY].rows);
- n = MAX (n, meta->tables [MONO_TABLE_PROPERTY].rows);
- n = MAX (n, meta->tables [MONO_TABLE_EVENT].rows);
- n = MAX (n, meta->tables [MONO_TABLE_STANDALONESIG].rows);
- n = MAX (n, meta->tables [MONO_TABLE_MODULEREF].rows);
- n = MAX (n, meta->tables [MONO_TABLE_TYPESPEC].rows);
- n = MAX (n, meta->tables [MONO_TABLE_ASSEMBLY].rows);
- n = MAX (n, meta->tables [MONO_TABLE_ASSEMBLYREF].rows);
- n = MAX (n, meta->tables [MONO_TABLE_FILE].rows);
- n = MAX (n, meta->tables [MONO_TABLE_EXPORTEDTYPE].rows);
- n = MAX (n, meta->tables [MONO_TABLE_MANIFESTRESOURCE].rows);
- /* 5 bits to encode */
- field_size = rtsize (n, 16-5);
- break;
- /*
- * CustomAttributeType: TypeDef, TypeRef, MethodDef,
- * MemberRef and String.
- */
- case MONO_MT_CAT_IDX:
- /* String is a heap, if it is wide, we know the size */
- /* See above, nope.
- if (meta->idx_string_wide){
- field_size = 4;
- break;
- }*/
-
- n = MAX (meta->tables [MONO_TABLE_TYPEREF].rows,
- meta->tables [MONO_TABLE_TYPEDEF].rows);
- n = MAX (n, meta->tables [MONO_TABLE_METHOD].rows);
- n = MAX (n, meta->tables [MONO_TABLE_MEMBERREF].rows);
- /* 3 bits to encode */
- field_size = rtsize (n, 16-3);
- break;
- /*
- * HasDeclSecurity: Typedef, MethodDef, Assembly
- */
- case MONO_MT_HASDEC_IDX:
- n = MAX (meta->tables [MONO_TABLE_TYPEDEF].rows,
- meta->tables [MONO_TABLE_METHOD].rows);
- n = MAX (n, meta->tables [MONO_TABLE_ASSEMBLY].rows);
- /* 2 bits to encode */
- field_size = rtsize (n, 16-2);
- break;
- /*
- * Implementation: File, AssemblyRef, ExportedType
- */
- case MONO_MT_IMPL_IDX:
- n = MAX (meta->tables [MONO_TABLE_FILE].rows,
- meta->tables [MONO_TABLE_ASSEMBLYREF].rows);
- n = MAX (n, meta->tables [MONO_TABLE_EXPORTEDTYPE].rows);
- /* 2 bits to encode tag */
- field_size = rtsize (n, 16-2);
- break;
- /*
- * HasFieldMarshall: FieldDef, ParamDef
- */
- case MONO_MT_HFM_IDX:
- n = MAX (meta->tables [MONO_TABLE_FIELD].rows,
- meta->tables [MONO_TABLE_PARAM].rows);
- /* 1 bit used to encode tag */
- field_size = rtsize (n, 16-1);
- break;
- /*
- * MemberForwarded: FieldDef, MethodDef
- */
- case MONO_MT_MF_IDX:
- n = MAX (meta->tables [MONO_TABLE_FIELD].rows,
- meta->tables [MONO_TABLE_METHOD].rows);
- /* 1 bit used to encode tag */
- field_size = rtsize (n, 16-1);
- break;
- /*
- * TypeDefOrRef: TypeDef, ParamDef, TypeSpec
- * LAMESPEC
- * It is TypeDef, _TypeRef_, TypeSpec, instead.
- */
- case MONO_MT_TDOR_IDX:
- n = MAX (meta->tables [MONO_TABLE_TYPEDEF].rows,
- meta->tables [MONO_TABLE_TYPEREF].rows);
- n = MAX (n, meta->tables [MONO_TABLE_TYPESPEC].rows);
- /* 2 bits to encode */
- field_size = rtsize (n, 16-2);
- break;
- /*
- * MemberRefParent: TypeDef, TypeRef, MethodDef, ModuleRef, TypeSpec, MemberRef
- */
- case MONO_MT_MRP_IDX:
- n = MAX (meta->tables [MONO_TABLE_TYPEDEF].rows,
- meta->tables [MONO_TABLE_TYPEREF].rows);
- n = MAX (n, meta->tables [MONO_TABLE_METHOD].rows);
- n = MAX (n, meta->tables [MONO_TABLE_MODULEREF].rows);
- n = MAX (n, meta->tables [MONO_TABLE_TYPESPEC].rows);
- /* 3 bits to encode */
- field_size = rtsize (n, 16 - 3);
- break;
-
- /*
- * MethodDefOrRef: MethodDef, MemberRef
- */
- case MONO_MT_MDOR_IDX:
- n = MAX (meta->tables [MONO_TABLE_METHOD].rows,
- meta->tables [MONO_TABLE_MEMBERREF].rows);
- /* 1 bit used to encode tag */
- field_size = rtsize (n, 16-1);
- break;
-
- /*
- * HasSemantics: Property, Event
- */
- case MONO_MT_HS_IDX:
- n = MAX (meta->tables [MONO_TABLE_PROPERTY].rows,
- meta->tables [MONO_TABLE_EVENT].rows);
- /* 1 bit used to encode tag */
- field_size = rtsize (n, 16-1);
- break;
- /*
- * ResolutionScope: Module, ModuleRef, AssemblyRef, TypeRef
- */
- case MONO_MT_RS_IDX:
- n = MAX (meta->tables [MONO_TABLE_MODULE].rows,
- meta->tables [MONO_TABLE_MODULEREF].rows);
- n = MAX (n, meta->tables [MONO_TABLE_ASSEMBLYREF].rows);
- n = MAX (n, meta->tables [MONO_TABLE_TYPEREF].rows);
- /* 2 bits used to encode tag (ECMA spec claims 3) */
- field_size = rtsize (n, 16 - 2);
- break;
- }
- /*
- * encode field size as follows (we just need to
- * distinguish them).
- *
- * 4 -> 3
- * 2 -> 1
- * 1 -> 0
- */
- bitfield |= (field_size-1) << shift;
- shift += 2;
- size += field_size;
- /*g_print ("table %02x field %d size %d\n", tableindex, i, field_size);*/
- }
- *result_bitfield = (i << 24) | bitfield;
- return size;
- }
- /**
- * mono_metadata_compute_table_bases:
- * @meta: metadata context to compute table values
- *
- * Computes the table bases for the metadata structure.
- * This is an internal function used by the image loader code.
- */
- void
- mono_metadata_compute_table_bases (MonoImage *meta)
- {
- int i;
- const char *base = meta->tables_base;
-
- for (i = 0; i < MONO_TABLE_NUM; i++) {
- MonoTableInfo *table = &meta->tables [i];
- if (table->rows == 0)
- continue;
- table->row_size = mono_metadata_compute_size (meta, i, &table->size_bitfield);
- table->base = base;
- base += table->rows * table->row_size;
- }
- }
- /**
- * mono_metadata_locate:
- * @meta: metadata context
- * @table: table code.
- * @idx: index of element to retrieve from @table.
- *
- * Returns: a pointer to the @idx element in the metadata table
- * whose code is @table.
- */
- const char *
- mono_metadata_locate (MonoImage *meta, int table, int idx)
- {
- /* idx == 0 refers always to NULL */
- g_return_val_if_fail (idx > 0 && idx <= meta->tables [table].rows, ""); /*FIXME shouldn't we return NULL here?*/
-
- return meta->tables [table].base + (meta->tables [table].row_size * (idx - 1));
- }
- /**
- * mono_metadata_locate_token:
- * @meta: metadata context
- * @token: metadata token
- *
- * Returns: a pointer to the data in the metadata represented by the
- * token #token.
- */
- const char *
- mono_metadata_locate_token (MonoImage *meta, guint32 token)
- {
- return mono_metadata_locate (meta, token >> 24, token & 0xffffff);
- }
- /**
- * mono_metadata_string_heap:
- * @meta: metadata context
- * @index: index into the string heap.
- *
- * Returns: an in-memory pointer to the @index in the string heap.
- */
- const char *
- mono_metadata_string_heap (MonoImage *meta, guint32 index)
- {
- g_assert (index < meta->heap_strings.size);
- g_return_val_if_fail (index < meta->heap_strings.size, "");
- return meta->heap_strings.data + index;
- }
- /**
- * mono_metadata_user_string:
- * @meta: metadata context
- * @index: index into the user string heap.
- *
- * Returns: an in-memory pointer to the @index in the user string heap ("#US").
- */
- const char *
- mono_metadata_user_string (MonoImage *meta, guint32 index)
- {
- g_assert (index < meta->heap_us.size);
- g_return_val_if_fail (index < meta->heap_us.size, "");
- return meta->heap_us.data + index;
- }
- /**
- * mono_metadata_blob_heap:
- * @meta: metadata context
- * @index: index into the blob.
- *
- * Returns: an in-memory pointer to the @index in the Blob heap.
- */
- const char *
- mono_metadata_blob_heap (MonoImage *meta, guint32 index)
- {
- g_assert (index < meta->heap_blob.size);
- g_return_val_if_fail (index < meta->heap_blob.size, "");/*FIXME shouldn't we return NULL and check for index == 0?*/
- return meta->heap_blob.data + index;
- }
- /**
- * mono_metadata_guid_heap:
- * @meta: metadata context
- * @index: index into the guid heap.
- *
- * Returns: an in-memory pointer to the @index in the guid heap.
- */
- const char *
- mono_metadata_guid_heap (MonoImage *meta, guint32 index)
- {
- --index;
- index *= 16; /* adjust for guid size and 1-based index */
- g_return_val_if_fail (index < meta->heap_guid.size, "");
- return meta->heap_guid.data + index;
- }
- static const unsigned char *
- dword_align (const unsigned char *ptr)
- {
- #if SIZEOF_VOID_P == 8
- return (const unsigned char *) (((guint64) (ptr + 3)) & ~3);
- #else
- return (const unsigned char *) (((guint32) (ptr + 3)) & ~3);
- #endif
- }
- /**
- * mono_metadata_decode_row:
- * @t: table to extract information from.
- * @idx: index in table.
- * @res: array of @res_size cols to store the results in
- *
- * This decompresses the metadata element @idx in table @t
- * into the guint32 @res array that has res_size elements
- */
- void
- mono_metadata_decode_row (const MonoTableInfo *t, int idx, guint32 *res, int res_size)
- {
- guint32 bitfield = t->size_bitfield;
- int i, count = mono_metadata_table_count (bitfield);
- const char *data;
- g_assert (idx < t->rows);
- g_assert (idx >= 0);
- data = t->base + idx * t->row_size;
-
- g_assert (res_size == count);
- for (i = 0; i < count; i++) {
- int n = mono_metadata_table_size (bitfield, i);
- switch (n){
- case 1:
- res [i] = *data; break;
- case 2:
- res [i] = read16 (data); break;
- case 4:
- res [i] = read32 (data); break;
- default:
- g_assert_not_reached ();
- }
- data += n;
- }
- }
- /**
- * mono_metadata_decode_row_col:
- * @t: table to extract information from.
- * @idx: index for row in table.
- * @col: column in the row.
- *
- * This function returns the value of column @col from the @idx
- * row in the table @t.
- */
- guint32
- mono_metadata_decode_row_col (const MonoTableInfo *t, int idx, guint col)
- {
- guint32 bitfield = t->size_bitfield;
- int i;
- register const char *data;
- register int n;
-
- g_assert (idx < t->rows);
- g_assert (col < mono_metadata_table_count (bitfield));
- data = t->base + idx * t->row_size;
- n = mono_metadata_table_size (bitfield, 0);
- for (i = 0; i < col; ++i) {
- data += n;
- n = mono_metadata_table_size (bitfield, i + 1);
- }
- switch (n) {
- case 1:
- return *data;
- case 2:
- return read16 (data);
- case 4:
- return read32 (data);
- default:
- g_assert_not_reached ();
- }
- return 0;
- }
- /**
- * mono_metadata_decode_blob_size:
- * @ptr: pointer to a blob object
- * @rptr: the new position of the pointer
- *
- * This decodes a compressed size as described by 23.1.4 (a blob or user string object)
- *
- * Returns: the size of the blob object
- */
- guint32
- mono_metadata_decode_blob_size (const char *xptr, const char **rptr)
- {
- const unsigned char *ptr = (const unsigned char *)xptr;
- guint32 size;
-
- if ((*ptr & 0x80) == 0){
- size = ptr [0] & 0x7f;
- ptr++;
- } else if ((*ptr & 0x40) == 0){
- size = ((ptr [0] & 0x3f) << 8) + ptr [1];
- ptr += 2;
- } else {
- size = ((ptr [0] & 0x1f) << 24) +
- (ptr [1] << 16) +
- (ptr [2] << 8) +
- ptr [3];
- ptr += 4;
- }
- if (rptr)
- *rptr = (char*)ptr;
- return size;
- }
- /**
- * mono_metadata_decode_value:
- * @ptr: pointer to decode from
- * @rptr: the new position of the pointer
- *
- * This routine decompresses 32-bit values as specified in the "Blob and
- * Signature" section (22.2)
- *
- * Returns: the decoded value
- */
- guint32
- mono_metadata_decode_value (const char *_ptr, const char **rptr)
- {
- const unsigned char *ptr = (const unsigned char *) _ptr;
- unsigned char b = *ptr;
- guint32 len;
-
- if ((b & 0x80) == 0){
- len = b;
- ++ptr;
- } else if ((b & 0x40) == 0){
- len = ((b & 0x3f) << 8 | ptr [1]);
- ptr += 2;
- } else {
- len = ((b & 0x1f) << 24) |
- (ptr [1] << 16) |
- (ptr [2] << 8) |
- ptr [3];
- ptr += 4;
- }
- if (rptr)
- *rptr = (char*)ptr;
-
- return len;
- }
- /**
- * mono_metadata_decode_signed_value:
- * @ptr: pointer to decode from
- * @rptr: the new position of the pointer
- *
- * This routine decompresses 32-bit signed values
- * (not specified in the spec)
- *
- * Returns: the decoded value
- */
- gint32
- mono_metadata_decode_signed_value (const char *ptr, const char **rptr)
- {
- guint32 uval = mono_metadata_decode_value (ptr, rptr);
- gint32 ival = uval >> 1;
- if (!(uval & 1))
- return ival;
- /* ival is a truncated 2's complement negative number. */
- if (ival < 0x40)
- /* 6 bits = 7 bits for compressed representation (top bit is '0') - 1 sign bit */
- return ival - 0x40;
- if (ival < 0x2000)
- /* 13 bits = 14 bits for compressed representation (top bits are '10') - 1 sign bit */
- return ival - 0x2000;
- if (ival < 0x10000000)
- /* 28 bits = 29 bits for compressed representation (top bits are '110') - 1 sign bit */
- return ival - 0x10000000;
- g_assert (ival < 0x20000000);
- g_warning ("compressed signed value appears to use 29 bits for compressed representation: %x (raw: %8x)", ival, uval);
- return ival - 0x20000000;
- }
- /*
- * Translates the given 1-based index into the Method, Field, Event, or Param tables
- * using the *Ptr tables in uncompressed metadata, if they are available.
- *
- * FIXME: The caller is not forced to call this function, which is error-prone, since
- * forgetting to call it would only show up as a bug on uncompressed metadata.
- */
- guint32
- mono_metadata_translate_token_index (MonoImage *image, int table, guint32 idx)
- {
- if (!image->uncompressed_metadata)
- return idx;
- switch (table) {
- case MONO_TABLE_METHOD:
- if (image->tables [MONO_TABLE_METHOD_POINTER].rows)
- return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_METHOD_POINTER], idx - 1, MONO_METHOD_POINTER_METHOD);
- else
- return idx;
- case MONO_TABLE_FIELD:
- if (image->tables [MONO_TABLE_FIELD_POINTER].rows)
- return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_FIELD_POINTER], idx - 1, MONO_FIELD_POINTER_FIELD);
- else
- return idx;
- case MONO_TABLE_EVENT:
- if (image->tables [MONO_TABLE_EVENT_POINTER].rows)
- return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_EVENT_POINTER], idx - 1, MONO_EVENT_POINTER_EVENT);
- else
- return idx;
- case MONO_TABLE_PROPERTY:
- if (image->tables [MONO_TABLE_PROPERTY_POINTER].rows)
- return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_PROPERTY_POINTER], idx - 1, MONO_PROPERTY_POINTER_PROPERTY);
- else
- return idx;
- case MONO_TABLE_PARAM:
- if (image->tables [MONO_TABLE_PARAM_POINTER].rows)
- return mono_metadata_decode_row_col (&image->tables [MONO_TABLE_PARAM_POINTER], idx - 1, MONO_PARAM_POINTER_PARAM);
- else
- return idx;
- default:
- return idx;
- }
- }
- /**
- * mono_metadata_decode_table_row:
- *
- * Same as mono_metadata_decode_row, but takes an IMAGE+TABLE ID pair, and takes
- * uncompressed metadata into account, so it should be used to access the
- * Method, Field, Param and Event tables when the access is made from metadata, i.e.
- * IDX is retrieved from a metadata table, like MONO_TYPEDEF_FIELD_LIST.
- */
- void
- mono_metadata_decode_table_row (MonoImage *image, int table, int idx, guint32 *res, int res_size)
- {
- if (image->uncompressed_metadata)
- idx = mono_metadata_translate_token_index (image, table, idx + 1) - 1;
- mono_metadata_decode_row (&image->tables [table], idx, res, res_size);
- }
- /**
- * mono_metadata_decode_table_row_col:
- *
- * Same as mono_metadata_decode_row_col, but takes an IMAGE+TABLE ID pair, and takes
- * uncompressed metadata into account, so it should be used to access the
- * Method, Field, Param and Event tables.
- */
- guint32 mono_metadata_decode_table_row_col (MonoImage *image, int table, int idx, guint col)
- {
- if (image->uncompressed_metadata)
- idx = mono_metadata_translate_token_index (image, table, idx + 1) - 1;
- return mono_metadata_decode_row_col (&image->tables [table], idx, col);
- }
- /*
- * mono_metadata_parse_typedef_or_ref:
- * @m: a metadata context.
- * @ptr: a pointer to an encoded TypedefOrRef in @m
- * @rptr: pointer updated to match the end of the decoded stream
- *
- * Returns: a token valid in the @m metadata decoded from
- * the compressed representation.
- */
- guint32
- mono_metadata_parse_typedef_or_ref (MonoImage *m, const char *ptr, const char **rptr)
- {
- guint32 token;
- token = mono_metadata_decode_value (ptr, &ptr);
- if (rptr)
- *rptr = ptr;
- return mono_metadata_token_from_dor (token);
- }
- /*
- * mono_metadata_parse_custom_mod:
- * @m: a metadata context.
- * @dest: storage where the info about the custom modifier is stored (may be NULL)
- * @ptr: a pointer to (possibly) the start of a custom modifier list
- * @rptr: pointer updated to match the end of the decoded stream
- *
- * Checks if @ptr points to a type custom modifier compressed representation.
- *
- * Returns: #TRUE if a custom modifier was found, #FALSE if not.
- */
- int
- mono_metadata_parse_custom_mod (MonoImage *m, MonoCustomMod *dest, const char *ptr, const char **rptr)
- {
- MonoCustomMod local;
- if ((*ptr == MONO_TYPE_CMOD_OPT) || (*ptr == MONO_TYPE_CMOD_REQD)) {
- if (!dest)
- dest = &local;
- dest->required = *ptr == MONO_TYPE_CMOD_REQD ? 1 : 0;
- dest->token = mono_metadata_parse_typedef_or_ref (m, ptr + 1, rptr);
- return TRUE;
- }
- return FALSE;
- }
- /*
- * mono_metadata_parse_array_internal:
- * @m: a metadata context.
- * @transient: whenever to allocate data from the heap
- * @ptr: a pointer to an encoded array description.
- * @rptr: pointer updated to match the end of the decoded stream
- *
- * Decodes the compressed array description found in the metadata @m at @ptr.
- *
- * Returns: a #MonoArrayType structure describing the array type
- * and dimensions. Memory is allocated from the heap or from the image mempool, depending
- * on the value of @transient.
- *
- * LOCKING: Acquires the loader lock
- */
- static MonoArrayType *
- mono_metadata_parse_array_internal (MonoImage *m, MonoGenericContainer *container,
- gboolean transient, const char *ptr, const char **rptr)
- {
- int i;
- MonoArrayType *array;
- MonoType *etype;
-
- array = transient ? g_malloc0 (sizeof (MonoArrayType)) : mono_image_alloc0 (m, sizeof (MonoArrayType));
- etype = mono_metadata_parse_type_full (m, container, MONO_PARSE_TYPE, 0, ptr, &ptr);
- if (!etype)
- return NULL;
- array->eklass = mono_class_from_mono_type (etype);
- array->rank = mono_metadata_decode_value (ptr, &ptr);
- array->numsizes = mono_metadata_decode_value (ptr, &ptr);
- if (array->numsizes)
- array->sizes = transient ? g_malloc0 (sizeof (int) * array->numsizes) : mono_image_alloc0 (m, sizeof (int) * array->numsizes);
- for (i = 0; i < array->numsizes; ++i)
- array->sizes [i] = mono_metadata_decode_value (ptr, &ptr);
- array->numlobounds = mono_metadata_decode_value (ptr, &ptr);
- if (array->numlobounds)
- array->lobounds = transient ? g_malloc0 (sizeof (int) * array->numlobounds) : mono_image_alloc0 (m, sizeof (int) * array->numlobounds);
- for (i = 0; i < array->numlobounds; ++i)
- array->lobounds [i] = mono_metadata_decode_signed_value (ptr, &ptr);
- if (rptr)
- *rptr = ptr;
- return array;
- }
- MonoArrayType *
- mono_metadata_parse_array_full (MonoImage *m, MonoGenericContainer *container,
- const char *ptr, const char **rptr)
- {
- return mono_metadata_parse_array_internal (m, container, FALSE, ptr, rptr);
- }
- MonoArrayType *
- mono_metadata_parse_array (MonoImage *m, const char *ptr, const char **rptr)
- {
- return mono_metadata_parse_array_full (m, NULL, ptr, rptr);
- }
- /*
- * mono_metadata_free_array:
- * @array: array description
- *
- * Frees the array description returned from mono_metadata_parse_array().
- */
- void
- mono_metadata_free_array (MonoArrayType *array)
- {
- g_free (array->sizes);
- g_free (array->lobounds);
- g_free (array);
- }
- /*
- * need to add common field and param attributes combinations:
- * [out] param
- * public static
- * public static literal
- * private
- * private static
- * private static literal
- */
- static const MonoType
- builtin_types[] = {
- /* data, attrs, type, nmods, byref, pinned */
- {{NULL}, 0, MONO_TYPE_VOID, 0, 0, 0},
- {{NULL}, 0, MONO_TYPE_BOOLEAN, 0, 0, 0},
- {{NULL}, 0, MONO_TYPE_BOOLEAN, 0, 1, 0},
- {{NULL}, 0, MONO_TYPE_CHAR, 0, 0, 0},
- {{NULL}, 0, MONO_TYPE_CHAR, 0, 1, 0},
- {{NULL}, 0, MONO_TYPE_I1, 0, 0, 0},
- {{NULL}, 0, MONO_TYPE_I1, 0, 1, 0},
- {{NULL}, 0, MONO_TYPE_U1, 0, 0, 0},
- {{NULL}, 0, MONO_TYPE_U1, 0, 1, 0},
- {{NULL}, 0, MONO_TYPE_I2, 0, 0, 0},
- {{NULL}, 0, MONO_TYPE_I2, 0, 1, 0},
- {{NULL}, 0, MONO_TYPE_U2, 0, 0, 0},
- {{NULL}, 0, MONO_TYPE_U2, 0, 1, 0},
- {{NULL}, 0, MONO_TYPE_I4, 0, 0, 0},
- {{NULL}, 0, MONO_TYPE_I4, 0, 1, 0},
- {{NULL}, 0, MONO_TYPE_U4, 0, 0, 0},
- {{NULL}, 0, MONO_TYPE_U4, 0, 1, 0},
- {{NULL}, 0, MONO_TYPE_I8, 0, 0, 0},
- {{NULL}, 0, MONO_TYPE_I8, 0, 1, 0},
- {{NULL}, 0, MONO_TYPE_U8, 0, 0, 0},
- {{NULL}, 0, MONO_TYPE_U8, 0, 1, 0},
- {{NULL}, 0, MONO_TYPE_R4, 0, 0, 0},
- {{NULL}, 0, MONO_TYPE_R4, 0, 1, 0},
- {{NULL}, 0, MONO_TYPE_R8, 0, 0, 0},
- {{NULL}, 0, MONO_TYPE_R8, 0, 1, 0},
- {{NULL}, 0, MONO_TYPE_STRING, 0, 0, 0},
- {{NULL}, 0, MONO_TYPE_STRING, 0, 1, 0},
- {{NULL}, 0, MONO_TYPE_OBJECT, 0, 0, 0},
- {{NULL}, 0, MONO_TYPE_OBJECT, 0, 1, 0},
- {{NULL}, 0, MONO_TYPE_TYPEDBYREF, 0, 0, 0},
- {{NULL}, 0, MONO_TYPE_I, 0, 0, 0},
- {{NULL}, 0, MONO_TYPE_I, 0, 1, 0},
- {{NULL}, 0, MONO_TYPE_U, 0, 0, 0},
- {{NULL}, 0, MONO_TYPE_U, 0, 1, 0},
- };
- #define NBUILTIN_TYPES() (sizeof (builtin_types) / sizeof (builtin_types [0]))
- static GHashTable *type_cache = NULL;
- static int next_generic_inst_id = 0;
- static MonoImageSet *mscorlib_image_set;
- static GPtrArray *image_sets;
- static guint mono_generic_class_hash (gconstpointer data);
- /*
- * MonoTypes with modifies are never cached, so we never check or use that field.
- */
- static guint
- mono_type_hash (gconstpointer data)
- {
- const MonoType *type = (const MonoType *) data;
- if (type->type == MONO_TYPE_GENERICINST)
- return mono_generic_class_hash (type->data.generic_class);
- else
- return type->type | (type->byref << 8) | (type->attrs << 9);
- }
- static gint
- mono_type_equal (gconstpointer ka, gconstpointer kb)
- {
- const MonoType *a = (const MonoType *) ka;
- const MonoType *b = (const MonoType *) kb;
-
- if (a->type != b->type || a->byref != b->byref || a->attrs != b->attrs || a->pinned != b->pinned)
- return 0;
- /* need other checks */
- return 1;
- }
- guint
- mono_metadata_generic_inst_hash (gconstpointer data)
- {
- const MonoGenericInst *ginst = (const MonoGenericInst *) data;
- guint hash = 0;
- int i;
-
- for (i = 0; i < ginst->type_argc; ++i) {
- hash *= 13;
- hash += mono_metadata_type_hash (ginst->type_argv [i]);
- }
- return hash ^ (ginst->is_open << 8);
- }
- static gboolean
- mono_generic_inst_equal_full (const MonoGenericInst *a, const MonoGenericInst *b, gboolean signature_only)
- {
- int i;
- #ifndef MONO_SMALL_CONFIG
- if (a->id && b->id) {
- if (a->id == b->id)
- return TRUE;
- if (!signature_only)
- return FALSE;
- }
- #endif
- if (a->is_open != b->is_open || a->type_argc != b->type_argc)
- return FALSE;
- for (i = 0; i < a->type_argc; ++i) {
- if (!do_mono_metadata_type_equal (a->type_argv [i], b->type_argv [i], signature_only))
- return FALSE;
- }
- return TRUE;
- }
- gboolean
- mono_metadata_generic_inst_equal (gconstpointer ka, gconstpointer kb)
- {
- const MonoGenericInst *a = (const MonoGenericInst *) ka;
- const MonoGenericInst *b = (const MonoGenericInst *) kb;
- return mono_generic_inst_equal_full (a, b, FALSE);
- }
- static guint
- mono_generic_class_hash (gconstpointer data)
- {
- const MonoGenericClass *gclass = (const MonoGenericClass *) data;
- guint hash = mono_metadata_type_hash (&gclass->container_class->byval_arg);
- hash *= 13;
- hash += gclass->is_tb_open;
- hash += mono_metadata_generic_context_hash (&gclass->context);
- return hash;
- }
- static gboolean
- mono_generic_class_equal (gconstpointer ka, gconstpointer kb)
- {
- const MonoGenericClass *a = (const MonoGenericClass *) ka;
- const MonoGenericClass *b = (const MonoGenericClass *) kb;
- return _mono_metadata_generic_class_equal (a, b, FALSE);
- }
- /**
- * mono_metadata_init:
- *
- * Initialize the global variables of this module.
- * This is a Mono runtime internal function.
- */
- void
- mono_metadata_init (void)
- {
- int i;
- type_cache = g_hash_table_new (mono_type_hash, mono_type_equal);
- for (i = 0; i < NBUILTIN_TYPES (); ++i)
- g_hash_table_insert (type_cache, (gpointer) &builtin_types [i], (gpointer) &builtin_types [i]);
- }
- /**
- * mono_metadata_cleanup:
- *
- * Free all resources used by this module.
- * This is a Mono runtime internal function.
- */
- void
- mono_metadata_cleanup (void)
- {
- g_hash_table_destroy (type_cache);
- type_cache = NULL;
- g_ptr_array_free (image_sets, TRUE);
- image_sets = NULL;
- }
- /**
- * mono_metadata_parse_type:
- * @m: metadata context
- * @mode: king of type that may be found at @ptr
- * @opt_attrs: optional attributes to store in the returned type
- * @ptr: pointer to the type representation
- * @rptr: pointer updated to match the end of the decoded stream
- * @transient: whenever to allocate the result from the heap or from a mempool
- *
- * Decode a compressed type description found at @ptr in @m.
- * @mode can be one of MONO_PARSE_MOD_TYPE, MONO_PARSE_PARAM, MONO_PARSE_RET,
- * MONO_PARSE_FIELD, MONO_PARSE_LOCAL, MONO_PARSE_TYPE.
- * This function can be used to decode type descriptions in method signatures,
- * field signatures, locals signatures etc.
- *
- * To parse a generic type, `generic_container' points to the current class'es
- * (the `generic_container' field in the MonoClass) or the current generic method's
- * (stored in image->property_hash) generic container.
- * When we encounter any MONO_TYPE_VAR or MONO_TYPE_MVAR's, they're looked up in
- * this MonoGenericContainer.
- *
- * LOCKING: Acquires the loader lock.
- *
- * Returns: a #MonoType structure representing the decoded type.
- */
- static MonoType*
- mono_metadata_parse_type_internal (MonoImage *m, MonoGenericContainer *container, MonoParseTypeMode mode,
- short opt_attrs, gboolean transient, const char *ptr, const char **rptr)
- {
- MonoType *type, *cached;
- MonoType stype;
- gboolean byref = FALSE;
- gboolean pinned = FALSE;
- const char *tmp_ptr;
- int count = 0;
- gboolean found;
- /*
- * According to the spec, custom modifiers should come before the byref
- * flag, but the IL produced by ilasm from the following signature:
- * object modopt(...) &
- * starts with a byref flag, followed by the modifiers. (bug #49802)
- * Also, this type seems to be different from 'object & modopt(...)'. Maybe
- * it would be better to treat byref as real type constructor instead of
- * a modifier...
- * Also, pinned should come before anything else, but some MSV++ produced
- * assemblies violate this (#bug 61990).
- */
- /* Count the modifiers first */
- tmp_ptr = ptr;
- found = TRUE;
- while (found) {
- switch (*tmp_ptr) {
- case MONO_TYPE_PINNED:
- case MONO_TYPE_BYREF:
- ++tmp_ptr;
- break;
- case MONO_TYPE_CMOD_REQD:
- case MONO_TYPE_CMOD_OPT:
- count ++;
- mono_metadata_parse_custom_mod (m, NULL, tmp_ptr, &tmp_ptr);
- break;
- default:
- found = FALSE;
- }
- }
- if (count) {
- int size;
- size = MONO_SIZEOF_TYPE + ((gint32)count) * sizeof (MonoCustomMod);
- type = transient ? g_malloc0 (size) : mono_image_alloc0 (m, size);
- type->num_mods = count;
- if (count > 64)
- g_warning ("got more than 64 modifiers in type");
- } else {
- type = &stype;
- memset (type, 0, MONO_SIZEOF_TYPE);
- }
- /* Parse pinned, byref and custom modifiers */
- found = TRUE;
- count = 0;
- while (found) {
- switch (*ptr) {
- case MONO_TYPE_PINNED:
- pinned = TRUE;
- ++ptr;
- break;
- case MONO_TYPE_BYREF:
- byref = TRUE;
- ++ptr;
- break;
- case MONO_TYPE_CMOD_REQD:
- case MONO_TYPE_CMOD_OPT:
- mono_metadata_parse_custom_mod (m, &(type->modifiers [count]), ptr, &ptr);
- count ++;
- break;
- default:
- found = FALSE;
- }
- }
-
- type->attrs = opt_attrs;
- type->byref = byref;
- type->pinned = pinned ? 1 : 0;
- if (!do_mono_metadata_parse_type (type, m, container, transient, ptr, &ptr)) {
- return NULL;
- }
- if (rptr)
- *rptr = ptr;
- if (!type->num_mods && !transient) {
- /* no need to free type here, because it is on the stack */
- if ((type->type == MONO_TYPE_CLASS || type->type == MONO_TYPE_VALUETYPE) && !type->pinned && !type->attrs) {
- MonoType *ret = type->byref ? &type->data.klass->this_arg : &type->data.klass->byval_arg;
- /* Consider the case:
- class Foo<T> { class Bar {} }
- class Test : Foo<Test>.Bar {}
- When Foo<Test> is being expanded, 'Test' isn't yet initialized. It's actually in
- a really pristine state: it doesn't even know whether 'Test' is a reference or a value type.
- We ensure that the MonoClass is in a state that we can canonicalize to:
- klass->byval_arg.data.klass == klass
- klass->this_arg.data.klass == klass
- If we can't canonicalize 'type', it doesn't matter, since later users of 'type' will do it.
- LOCKING: even though we don't explicitly hold a lock, in the problematic case 'ret' is a field
- of a MonoClass which currently holds the loader lock. 'type' is local.
- */
- if (ret->data.klass == type->data.klass) {
- return ret;
- }
- }
- /* No need to use locking since nobody is modifying the hash table */
- if ((cached = g_hash_table_lookup (type_cache, type))) {
- return cached;
- }
- }
-
- /* printf ("%x %x %c %s\n", type->attrs, type->num_mods, type->pinned ? 'p' : ' ', mono_type_full_name (type)); */
-
- if (type == &stype) {
- type = transient ? g_malloc (MONO_SIZEOF_TYPE) : mono_image_alloc (m, MONO_SIZEOF_TYPE);
- memcpy (type, &stype, MONO_SIZEOF_TYPE);
- }
- return type;
- }
- MonoType*
- mono_metadata_parse_type_full (MonoImage *m, MonoGenericContainer *container, MonoParseTypeMode mode,
- short opt_attrs, const char *ptr, const char **rptr)
- {
- return mono_metadata_parse_type_internal (m, container, mode, opt_attrs, FALSE, ptr, rptr);
- }
- /*
- * LOCKING: Acquires the loader lock.
- */
- MonoType*
- mono_metadata_parse_type (MonoImage *m, MonoParseTypeMode mode, short opt_attrs,
- const char *ptr, const char **rptr)
- {
- return mono_metadata_parse_type_full (m, NULL, mode, opt_attrs, ptr, rptr);
- }
- gboolean
- mono_metadata_method_has_param_attrs (MonoImage *m, int def)
- {
- MonoTableInfo *paramt = &m->tables [MONO_TABLE_PARAM];
- MonoTableInfo *methodt = &m->tables [MONO_TABLE_METHOD];
- guint lastp, i, param_index = mono_metadata_decode_row_col (methodt, def - 1, MONO_METHOD_PARAMLIST);
- if (def < methodt->rows)
- lastp = mono_metadata_decode_row_col (methodt, def, MONO_METHOD_PARAMLIST);
- else
- lastp = m->tables [MONO_TABLE_PARAM].rows + 1;
- for (i = param_index; i < lastp; ++i) {
- guint32 flags = mono_metadata_decode_row_col (paramt, i - 1, MONO_PARAM_FLAGS);
- if (flags)
- return TRUE;
- }
- return FALSE;
- }
- /*
- * mono_metadata_get_param_attrs:
- *
- * @m The image to loader parameter attributes from
- * @def method def token (one based)
- * @param_count number of params to decode including the return value
- *
- * Return the parameter attributes for the method whose MethodDef index is DEF. The
- * returned memory needs to be freed by the caller. If all the param attributes are
- * 0, then NULL is returned.
- */
- int*
- mono_metadata_get_param_attrs (MonoImage *m, int def, int param_count)
- {
- MonoTableInfo *paramt = &m->tables [MONO_TABLE_PARAM];
- MonoTableInfo *methodt = &m->tables [MONO_TABLE_METHOD];
- guint32 cols [MONO_PARAM_SIZE];
- guint lastp, i, param_index = mono_metadata_decode_row_col (methodt, def - 1, MONO_METHOD_PARAMLIST);
- int *pattrs = NULL;
- if (def < methodt->rows)
- lastp = mono_metadata_decode_row_col (methodt, def, MONO_METHOD_PARAMLIST);
- else
- lastp = paramt->rows + 1;
- for (i = param_index; i < lastp; ++i) {
- mono_metadata_decode_row (paramt, i - 1, cols, MONO_PARAM_SIZE);
- if (cols [MONO_PARAM_FLAGS]) {
- if (!pattrs)
- pattrs = g_new0 (int, param_count);
- /* at runtime we just ignore this kind of malformed file:
- * the verifier can signal the error to the user
- */
- if (cols [MONO_PARAM_SEQUENCE] >= param_count)
- continue;
- pattrs [cols [MONO_PARAM_SEQUENCE]] = cols [MONO_PARAM_FLAGS];
- }
- }
- return pattrs;
- }
- /*
- * mono_metadata_parse_signature_full:
- * @image: metadata context
- * @generic_container: generic container
- * @toke: metadata token
- *
- * Decode a method signature stored in the STANDALONESIG table
- *
- * LOCKING: Assumes the loader lock is held.
- *
- * Returns: a MonoMethodSignature describing the signature.
- */
- MonoMethodSignature*
- mono_metadata_parse_signature_full (MonoImage *image, MonoGenericContainer *generic_container, guint32 token)
- {
- MonoTableInfo *tables = image->tables;
- guint32 idx = mono_metadata_token_index (token);
- guint32 sig;
- const char *ptr;
- if (image->dynamic)
- return mono_lookup_dynamic_token (image, token, NULL);
- g_assert (mono_metadata_token_table(token) == MONO_TABLE_STANDALONESIG);
-
- sig = mono_metadata_decode_row_col (&tables [MONO_TABLE_STANDALONESIG], idx - 1, 0);
- ptr = mono_metadata_blob_heap (image, sig);
- mono_metadata_decode_blob_size (ptr, &ptr);
- return mono_metadata_parse_method_signature_full (image, generic_container, 0, ptr, NULL);
- }
- /*
- * mono_metadata_parse_signature:
- * @image: metadata context
- * @toke: metadata token
- *
- * Decode a method signature stored in the STANDALONESIG table
- *
- * Returns: a MonoMethodSignature describing the signature.
- */
- MonoMethodSignature*
- mono_metadata_parse_signature (MonoImage *image, guint32 token)
- {
- return mono_metadata_parse_signature_full (image, NULL, token);
- }
- /*
- * mono_metadata_signature_alloc:
- * @image: metadata context
- * @nparmas: number of parameters in the signature
- *
- * Allocate a MonoMethodSignature structure with the specified number of params.
- * The return type and the params types need to be filled later.
- * This is a Mono runtime internal function.
- *
- * LOCKING: Assumes the loader lock is held.
- *
- * Returns: the new MonoMethodSignature structure.
- */
- MonoMethodSignature*
- mono_metadata_signature_alloc (MonoImage *m, guint32 nparams)
- {
- MonoMethodSignature *sig;
- sig = mono_image_alloc0 (m, MONO_SIZEOF_METHOD_SIGNATURE + ((gint32)nparams) * sizeof (MonoType*));
- sig->param_count = nparams;
- sig->sentinelpos = -1;
- return sig;
- }
- static MonoMethodSignature*
- mono_metadata_signature_dup_internal (MonoImage *image, MonoMemPool *mp, MonoMethodSignature *sig)
- {
- int sigsize;
- MonoMethodSignature *ret;
- sigsize = MONO_SIZEOF_METHOD_SIGNATURE + sig->param_count * sizeof (MonoType *);
- if (image) {
- ret = mono_image_alloc (image, sigsize);
- } else if (mp) {
- ret = mono_mempool_alloc (mp, sigsize);
- } else {
- ret = g_malloc (sigsize);
- }
- memcpy (ret, sig, sigsize);
- return ret;
- }
- MonoMethodSignature*
- mono_metadata_signature_dup_full (MonoImage *image, MonoMethodSignature *sig)
- {
- return mono_metadata_signature_dup_internal (image, NULL, sig);
- }
- /*The mempool is accessed without synchronization*/
- MonoMethodSignature*
- mono_metadata_signature_dup_mempool (MonoMemPool *mp, MonoMethodSignature *sig)
- {
- return mono_metadata_signature_dup_internal (NULL, mp, sig);
- }
- /*
- * mono_metadata_signature_dup:
- * @sig: method signature
- *
- * Duplicate an existing MonoMethodSignature so it can be modified.
- * This is a Mono runtime internal function.
- *
- * Returns: the new MonoMethodSignature structure.
- */
- MonoMethodSignature*
- mono_metadata_signature_dup (MonoMethodSignature *sig)
- {
- return mono_metadata_signature_dup_full (NULL, sig);
- }
- /*
- * mono_metadata_signature_size:
- *
- * Return the amount of memory allocated to SIG.
- */
- guint32
- mono_metadata_signature_size (MonoMethodSignature *sig)
- {
- return MONO_SIZEOF_METHOD_SIGNATURE + sig->param_count * sizeof (MonoType *);
- }
- /*
- * mono_metadata_parse_method_signature:
- * @m: metadata context
- * @generic_container: generics container
- * @def: the MethodDef index or 0 for Ref signatures.
- * @ptr: pointer to the signature metadata representation
- * @rptr: pointer updated to match the end of the decoded stream
- *
- * Decode a method signature stored at @ptr.
- * This is a Mono runtime internal function.
- *
- * LOCKING: Assumes the loader lock is held.
- *
- * Returns: a MonoMethodSignature describing the signature.
- */
- MonoMethodSignature *
- mono_metadata_parse_method_signature_full (MonoImage *m, MonoGenericContainer *container,
- int def, const char *ptr, const char **rptr)
- {
- MonoMethodSignature *method;
- int i, *pattrs = NULL;
- guint32 hasthis = 0, explicit_this = 0, call_convention, param_count;
- guint32 gen_param_count = 0;
- gboolean is_open = FALSE;
- if (*ptr & 0x10)
- gen_param_count = 1;
- if (*ptr & 0x20)
- hasthis = 1;
- if (*ptr & 0x40)
- explicit_this = 1;
- call_convention = *ptr & 0x0F;
- ptr++;
- if (gen_param_count)
- gen_param_count = mono_metadata_decode_value (ptr, &ptr);
- param_count = mono_metadata_decode_value (ptr, &ptr);
- if (def)
- pattrs = mono_metadata_get_param_attrs (m, def, param_count + 1); /*Must be + 1 since signature's param count doesn't account for the return value */
- method = mono_metadata_signature_alloc (m, param_count);
- method->hasthis = hasthis;
- method->explicit_this = explicit_this;
- method->call_convention = call_convention;
- method->generic_param_count = gen_param_count;
- if (call_convention != 0xa) {
- method->ret = mono_metadata_parse_type_full (m, container, MONO_PARSE_RET, pattrs ? pattrs [0] : 0, ptr, &ptr);
- if (!method->ret) {
- mono_metadata_free_method_signature (method);
- g_free (pattrs);
- return NULL;
- }
- is_open = mono_class_is_open_constructed_type (method->ret);
- }
- for (i = 0; i < method->param_count; ++i) {
- if (*ptr == MONO_TYPE_SENTINEL) {
- if (method->call_convention != MONO_CALL_VARARG || def) {
- g_warning ("found sentinel for methoddef or no vararg method 0x%08x on image %s", def, m->name);
- g_free (pattrs);
- return NULL;
- }
- if (method->sentinelpos >= 0) {
- g_warning ("found sentinel twice in the same signature for method 0x%08x on image %s", def, m->name);
- g_free (pattrs);
- return NULL;
- }
- method->sentinelpos = i;
- ptr++;
- }
- method->params [i] = mono_metadata_parse_type_full (m, container, MONO_PARSE_PARAM, pattrs ? pattrs [i+1] : 0, ptr, &ptr);
- if (!method->params [i]) {
- mono_metadata_free_method_signature (method);
- g_free (pattrs);
- return NULL;
- }
- if (!is_open)
- is_open = mono_class_is_open_constructed_type (method->params [i]);
- }
- /* The sentinel could be missing if the caller does not pass any additional arguments */
- if (!def && method->call_convention == MONO_CALL_VARARG && method->sentinelpos < 0)
- method->sentinelpos = method->param_count;
- method->has_type_parameters = is_open;
- if (def && (method->call_convention == MONO_CALL_VARARG))
- method->sentinelpos = method->param_count;
- g_free (pattrs);
- if (rptr)
- *rptr = ptr;
- /*
- * Add signature to a cache and increase ref count...
- */
- return method;
- }
- /*
- * mono_metadata_parse_method_signature:
- * @m: metadata context
- * @def: the MethodDef index or 0 for Ref signatures.
- * @ptr: pointer to the signature metadata representation
- * @rptr: pointer updated to match the end of the decoded stream
- *
- * Decode a method signature stored at @ptr.
- * This is a Mono runtime internal function.
- *
- * LOCKING: Assumes the loader lock is held.
- *
- * Returns: a MonoMethodSignature describing the signature.
- */
- MonoMethodSignature *
- mono_metadata_parse_method_signature (MonoImage *m, int def, const char *ptr, const char **rptr)
- {
- return mono_metadata_parse_method_signature_full (m, NULL, def, ptr, rptr);
- }
- /*
- * mono_metadata_free_method_signature:
- * @sig: signature to destroy
- *
- * Free the memory allocated in the signature @sig.
- * This method needs to be robust and work also on partially-built
- * signatures, so it does extra checks.
- */
- void
- mono_metadata_free_method_signature (MonoMethodSignature *sig)
- {
- /* Everything is allocated from mempools */
- /*
- int i;
- if (sig->ret)
- mono_metadata_free_type (sig->ret);
- for (i = 0; i < sig->param_count; ++i) {
- if (sig->params [i])
- mono_metadata_free_type (sig->params [i]);
- }
- */
- }
- void
- mono_metadata_free_inflated_signature (MonoMethodSignature *sig)
- {
- int i;
- /* Allocated in inflate_generic_signature () */
- if (sig->ret)
- mono_metadata_free_type (sig->ret);
- for (i = 0; i < sig->param_count; ++i) {
- if (sig->params [i])
- mono_metadata_free_type (sig->params [i]);
- }
- g_free (sig);
- }
- static gboolean
- inflated_method_equal (gconstpointer a, gconstpointer b)
- {
- const MonoMethodInflated *ma = a;
- const MonoMethodInflated *mb = b;
- if (ma->declaring != mb->declaring)
- return FALSE;
- if (ma->method.method.is_mb_open != mb->method.method.is_mb_open)
- return FALSE;
- return mono_metadata_generic_context_equal (&ma->context, &mb->context);
- }
- static guint
- inflated_method_hash (gconstpointer a)
- {
- const MonoMethodInflated *ma = a;
- return (mono_metadata_generic_context_hash (&ma->context) ^ mono_aligned_addr_hash (ma->declaring)) + ma->method.method.is_mb_open;
- }
- static gboolean
- inflated_signature_equal (gconstpointer a, gconstpointer b)
- {
- const MonoInflatedMethodSignature *sig1 = a;
- const MonoInflatedMethodSignature *sig2 = b;
- /* sig->sig is assumed to be canonized */
- if (sig1->sig != sig2->sig)
- return FALSE;
- /* The generic instances are canonized */
- return mono_metadata_generic_context_equal (&sig1->context, &sig2->context);
- }
- static guint
- inflated_signature_hash (gconstpointer a)
- {
- const MonoInflatedMethodSignature *sig = a;
- /* sig->sig is assumed to be canonized */
- return mono_metadata_generic_context_hash (&sig->context) ^ mono_aligned_addr_hash (sig->sig);
- }
- /*static void
- dump_ginst (MonoGenericInst *ginst)
- {
- int i;
- char *name;
- g_print ("Ginst: <");
- for (i = 0; i < ginst->type_argc; ++i) {
- if (i != 0)
- g_print (", ");
- name = mono_type_get_name (ginst->type_argv [i]);
- g_print ("%s", name);
- g_free (name);
- }
- g_print (">");
- }*/
- static gboolean type_in_image (MonoType *type, MonoImage *image);
- static gboolean
- signature_in_image (MonoMethodSignature *sig, MonoImage *image)
- {
- gpointer iter = NULL;
- MonoType *p;
- while ((p = mono_signature_get_params (sig, &iter)) != NULL)
- if (type_in_image (p, image))
- return TRUE;
- return type_in_image (mono_signature_get_return_type (sig), image);
- }
- static gboolean
- ginst_in_image (MonoGenericInst *ginst, MonoImage *image)
- {
- int i;
- for (i = 0; i < ginst->type_argc; ++i) {
- if (type_in_image (ginst->type_argv [i], image))
- return TRUE;
- }
- return FALSE;
- }
- static gboolean
- gclass_in_image (MonoGenericClass *gclass, MonoImage *image)
- {
- return gclass->container_class->image == image ||
- ginst_in_image (gclass->context.class_inst, image);
- }
- static gboolean
- type_in_image (MonoType *type, MonoImage *image)
- {
- retry:
- switch (type->type) {
- case MONO_TYPE_GENERICINST:
- return gclass_in_image (type->data.generic_class, image);
- case MONO_TYPE_PTR:
- type = type->data.type;
- goto retry;
- case MONO_TYPE_SZARRAY:
- type = &type->data.klass->byval_arg;
- goto retry;
- case MONO_TYPE_ARRAY:
- type = &type->data.array->eklass->byval_arg;
- goto retry;
- case MONO_TYPE_FNPTR:
- return signature_in_image (type->data.method, image);
- case MONO_TYPE_VAR: {
- MonoGenericContainer *container = mono_type_get_generic_param_owner (type);
- if (container) {
- g_assert (!container->is_method);
- /*
- * FIXME: The following check is here solely
- * for monodis, which uses the internal
- * function
- * mono_metadata_load_generic_params(). The
- * caller of that function needs to fill in
- * owner->klass or owner->method of the
- * returned struct, but monodis doesn't do
- * that. The image unloading depends on that,
- * however, so a crash results without this
- * check.
- */
- if (!container->owner.klass)
- return container->image == image;
- return container->owner.klass->image == image;
- } else {
- return type->data.generic_param->image == image;
- }
- }
- case MONO_TYPE_MVAR: {
- MonoGenericContainer *container = mono_type_get_generic_param_owner (type);
- if (type->data.generic_param->image == image)
- return TRUE;
- if (container) {
- g_assert (container->is_method);
- if (!container->owner.method)
- /* RefEmit created generic param whose method is not finished */
- return container->image == image;
- return container->owner.method->klass->image == image;
- } else {
- return type->data.generic_param->image == image;
- }
- }
- default:
- /* At this point, we should've avoided all potential allocations in mono_class_from_mono_type () */
- return image == mono_class_from_mono_type (type)->image;
- }
- }
- /*
- * get_image_set:
- *
- * Return a MonoImageSet representing the set of images in IMAGES.
- *
- * LOCKING: Assumes the loader lock is held.
- */
- static MonoImageSet*
- get_image_set (MonoImage **images, int nimages)
- {
- int i, j, k;
- MonoImageSet *set;
- GSList *l;
- if (!image_sets)
- image_sets = g_ptr_array_new ();
- /* Common case */
- if (nimages == 1 && images [0] == mono_defaults.corlib && mscorlib_image_set)
- return mscorlib_image_set;
- /* Happens with empty generic instances */
- if (nimages == 0)
- return mscorlib_image_set;
- if (images [0] == mono_defaults.corlib && nimages > 1)
- l = images [1]->image_sets;
- else
- l = images [0]->image_sets;
- set = NULL;
- for (; l; l = l->next) {
- set = l->data;
- if (set->nimages == nimages) {
- for (j = 0; j < nimages; ++j) {
- for (k = 0; k < nimages; ++k)
- if (set->images [k] == images [j])
- break;
- if (k == nimages)
- /* Not found */
- break;
- }
- if (j == nimages)
- /* Found */
- break;
- }
- }
- if (!l) {
- /* Not found */
- set = g_new0 (MonoImageSet, 1);
- set->nimages = nimages;
- set->images = g_new0 (MonoImage*, nimages);
- InitializeCriticalSection (&set->lock);
- for (i = 0; i < nimages; ++i)
- set->images [i] = images [i];
- set->gclass_cache = g_hash_table_new_full (mono_generic_class_hash, mono_generic_class_equal, NULL, (GDestroyNotify)free_generic_class);
- set->ginst_cache = g_hash_table_new_full (mono_metadata_generic_inst_hash, mono_metadata_generic_inst_equal, NULL, (GDestroyNotify)free_generic_inst);
- set->gmethod_cache = g_hash_table_new_full (inflated_method_hash, inflated_method_equal, NULL, (GDestroyNotify)free_inflated_method);
- set->gsignature_cache = g_hash_table_new_full (inflated_signature_hash, inflated_signature_equal, NULL, (GDestroyNotify)free_inflated_signature);
-
- for (i = 0; i < nimages; ++i)
- set->images [i]->image_sets = g_slist_prepend (set->images [i]->image_sets, set);
- g_ptr_array_add (image_sets, set);
- }
- if (nimages == 1 && images [0] == mono_defaults.corlib)
- mscorlib_image_set = set;
- return set;
- }
- static void
- delete_image_set (MonoImageSet *set)
- {
- int i;
- g_hash_table_destroy (set->gclass_cache);
- g_hash_table_destroy (set->ginst_cache);
- g_hash_table_destroy (set->gmethod_cache);
- g_hash_table_destroy (set->gsignature_cache);
- for (i = 0; i < set->nimages; ++i)
- set->images [i]->image_sets = g_slist_remove (set->images [i]->image_sets, set);
- g_ptr_array_remove (image_sets, set);
- if (set->mempool)
- mono_mempool_destroy (set->mempool);
- g_free (set->images);
- DeleteCriticalSection (&set->lock);
- g_free (set);
- }
- static void
- mono_image_set_lock (MonoImageSet *set)
- {
- EnterCriticalSection (&set->lock);
- }
- static void
- mono_image_set_unlock (MonoImageSet *set)
- {
- LeaveCriticalSection (&set->lock);
- }
- gpointer
- mono_image_set_alloc (MonoImageSet *set, guint size)
- {
- gpointer res;
- mono_image_set_lock (set);
- if (!set->mempool)
- set->mempool = mono_mempool_new_size (1024);
- res = mono_mempool_alloc (set->mempool, size);
- mono_image_set_unlock (set);
- return res;
- }
- gpointer
- mono_image_set_alloc0 (MonoImageSet *set, guint size)
- {
- gpointer res;
- mono_image_set_lock (set);
- if (!set->mempool)
- set->mempool = mono_mempool_new_size (1024);
- res = mono_mempool_alloc0 (set->mempool, size);
- mono_image_set_unlock (set);
- return res;
- }
- char*
- mono_image_set_strdup (MonoImageSet *set, const char *s)
- {
- char *res;
- mono_image_set_lock (set);
- if (!set->mempool)
- set->mempool = mono_mempool_new_size (1024);
- res = mono_mempool_strdup (set->mempool, s);
- mono_image_set_unlock (set);
- return res;
- }
- /*
- * Structure used by the collect_..._images functions to store the image list.
- */
- typedef struct {
- MonoImage *image_buf [64];
- MonoImage **images;
- int nimages, images_len;
- } CollectData;
- static void
- collect_data_init (CollectData *data)
- {
- data->images = data->image_buf;
- data->images_len = 64;
- data->nimages = 0;
- }
- static void
- collect_data_free (CollectData *data)
- {
- if (data->images != data->image_buf)
- g_free (data->images);
- }
- static void
- enlarge_data (CollectData *data)
- {
- int new_len = data->images_len < 16 ? 16 : data->images_len * 2;
- MonoImage **d = g_new (MonoImage *, new_len);
- // FIXME: test this
- g_assert_not_reached ();
- memcpy (d, data->images, data->images_len);
- if (data->images != data->image_buf)
- g_free (data->images);
- data->images = d;
- data->images_len = new_len;
- }
- static inline void
- add_image (MonoImage *image, CollectData *data)
- {
- int i;
- /* The arrays are small, so use a linear search instead of a hash table */
- for (i = 0; i < data->nimages; ++i)
- if (data->images [i] == image)
- return;
- if (data->nimages == data->images_len)
- enlarge_data (data);
- data->images [data->nimages ++] = image;
- }
- static void
- collect_type_images (MonoType *type, CollectData *data);
- static void
- collect_ginst_images (MonoGenericInst *ginst, CollectData *data)
- {
- int i;
- for (i = 0; i < ginst->type_argc; ++i) {
- collect_type_images (ginst->type_argv [i], data);
- }
- }
- static void
- collect_gclass_images (MonoGenericClass *gclass, CollectData *data)
- {
- add_image (gclass->container_class->image, data);
- if (gclass->context.class_inst)
- collect_ginst_images (gclass->context.class_inst, data);
- }
- static void
- collect_signature_images (MonoMethodSignature *sig, CollectData *data)
- {
- gpointer iter = NULL;
- MonoType *p;
- collect_type_images (mono_signature_get_return_type (sig), data);
- while ((p = mono_signature_get_params (sig, &iter)) != NULL)
- collect_type_images (p, data);
- }
- static void
- collect_inflated_signature_images (MonoInflatedMethodSignature *sig, CollectData *data)
- {
- collect_signature_images (sig->sig, data);
- if (sig->context.class_inst)
- collect_ginst_images (sig->context.class_inst, data);
- if (sig->context.method_inst)
- collect_ginst_images (sig->context.method_inst, data);
- }
- static void
- collect_method_images (MonoMethodInflated *method, CollectData *data)
- {
- add_image (method->declaring->klass->image, data);
- if (method->context.class_inst)
- collect_ginst_images (method->context.class_inst, data);
- if (method->context.method_inst)
- collect_ginst_images (method->context.method_inst, data);
- /*
- if (((MonoMethod*)method)->signature)
- collect_signature_images (mono_method_signature ((MonoMethod*)method), data);
- */
- }
- static void
- collect_type_images (MonoType *type, CollectData *data)
- {
- retry:
- switch (type->type) {
- case MONO_TYPE_GENERICINST:
- collect_gclass_images (type->data.generic_class, data);
- break;
- case MONO_TYPE_PTR:
- type = type->data.type;
- goto retry;
- case MONO_TYPE_SZARRAY:
- type = &type->data.klass->byval_arg;
- goto retry;
- case MONO_TYPE_ARRAY:
- type = &type->data.array->eklass->byval_arg;
- goto retry;
- case MONO_TYPE_FNPTR:
- //return signature_in_image (type->data.method, image);
- g_assert_not_reached ();
- case MONO_TYPE_VAR: {
- MonoGenericContainer *container = mono_type_get_generic_param_owner (type);
- if (container) {
- g_assert (!container->is_method);
- /*
- * FIXME: The following check is here solely
- * for monodis, which uses the internal
- * function
- * mono_metadata_load_generic_params(). The
- * caller of that function needs to fill in
- * owner->klass or owner->method of the
- * returned struct, but monodis doesn't do
- * that. The image unloading depends on that,
- * however, so a crash results without this
- * check.
- */
- if (!container->owner.klass)
- add_image (container->image, data);
- else
- add_image (container->owner.klass->image, data);
- } else {
- add_image (type->data.generic_param->image, data);
- }
- }
- break;
- case MONO_TYPE_MVAR: {
- MonoGenericContainer *container = mono_type_get_generic_param_owner (type);
- if (type->data.generic_param->image)
- add_image (type->data.generic_param->image, data);
- if (container) {
- if (!container->owner.method) {
- /* RefEmit created generic param whose method is not finished */
- add_image (container->image, data);
- } else {
- g_assert (container->is_method);
- add_image (container->owner.method->klass->image, data);
- }
- } else {
- add_image (type->data.generic_param->image, data);
- }
- }
- break;
- case MONO_TYPE_CLASS:
- case MONO_TYPE_VALUETYPE:
- add_image (mono_class_from_mono_type (type)->image, data);
- break;
- default:
- add_image (mono_defaults.corlib, data);
- }
- }
- typedef struct {
- MonoImage *image;
- GSList *list;
- } CleanForImageUserData;
- static gboolean
- steal_gclass_in_image (gpointer key, gpointer value, gpointer data)
- {
- MonoGenericClass *gclass = key;
- CleanForImageUserData *user_data = data;
- g_assert (gclass_in_image (gclass, user_data->image));
- user_data->list = g_slist_prepend (user_data->list, gclass);
- return TRUE;
- }
- static gboolean
- steal_ginst_in_image (gpointer key, gpointer value, gpointer data)
- {
- MonoGenericInst *ginst = key;
- CleanForImageUserData *user_data = data;
- // This doesn't work during corlib compilation
- //g_assert (ginst_in_image (ginst, user_data->image));
- user_data->list = g_slist_prepend (user_data->list, ginst);
- return TRUE;
- }
- static gboolean
- inflated_method_in_image (gpointer key, gpointer value, gpointer data)
- {
- MonoImage *image = data;
- MonoMethodInflated *method = key;
- // FIXME:
- // https://bugzilla.novell.com/show_bug.cgi?id=458168
- g_assert (method->declaring->klass->image == image ||
- (method->context.class_inst && ginst_in_image (method->context.class_inst, image)) ||
- (method->context.method_inst && ginst_in_image (method->context.method_inst, image)) || (((MonoMethod*)method)->signature && signature_in_image (mono_method_signature ((MonoMethod*)method), image)));
- return TRUE;
- }
- static gboolean
- inflated_signature_in_image (gpointer key, gpointer value, gpointer data)
- {
- MonoImage *image = data;
- MonoInflatedMethodSignature *sig = key;
- return signature_in_image (sig->sig, image) ||
- (sig->context.class_inst && ginst_in_image (sig->context.class_inst, image)) ||
- (sig->context.method_inst && ginst_in_image (sig->context.method_inst, image));
- }
- static void
- check_gmethod (gpointer key, gpointer value, gpointer data)
- {
- MonoMethodInflated *method = key;
- MonoImage *image = data;
- if (method->context.class_inst)
- g_assert (!ginst_in_image (method->context.class_inst, image));
- if (method->context.method_inst)
- g_assert (!ginst_in_image (method->context.method_inst, image));
- if (((MonoMethod*)method)->signature)
- g_assert (!signature_in_image (mono_method_signature ((MonoMethod*)method), image));
- }
- /*
- * check_image_sets:
- *
- * Run a consistency check on the image set data structures.
- */
- static G_GNUC_UNUSED void
- check_image_sets (MonoImage *image)
- {
- int i;
- GSList *l = image->image_sets;
- if (!image_sets)
- return;
- for (i = 0; i < image_sets->len; ++i) {
- MonoImageSet *set = g_ptr_array_index (image_sets, i);
- if (!g_slist_find (l, set)) {
- g_hash_table_foreach (set->gmethod_cache, check_gmethod, image);
- }
- }
- }
- GSList*
- mono_metadata_clean_for_image (MonoImage *image)
- {
- CleanForImageUserData ginst_data, gclass_data;
- GSList *l, *set_list, *free_list = NULL;
- //check_image_sets (image);
- /*
- * The data structures could reference each other so we delete them in two phases.
- * This is required because of the hashing functions in gclass/ginst_cache.
- */
- ginst_data.image = gclass_data.image = image;
- ginst_data.list = gclass_data.list = NULL;
- mono_loader_lock ();
- /* Collect the items to delete */
- /* delete_image_set () modifies the lists so make a copy */
- for (l = image->image_sets; l; l = l->next) {
- MonoImageSet *set = l->data;
- g_hash_table_foreach_steal (set->gclass_cache, steal_gclass_in_image, &gclass_data);
- g_hash_table_foreach_steal (set->ginst_cache, steal_ginst_in_image, &ginst_data);
- g_hash_table_foreach_remove (set->gmethod_cache, inflated_method_in_image, image);
- g_hash_table_foreach_remove (set->gsignature_cache, inflated_signature_in_image, image);
- }
- /* Delete the removed items */
- for (l = ginst_data.list; l; l = l->next)
- free_generic_inst (l->data);
- for (l = gclass_data.list; l; l = l->next)
- free_generic_class (l->data);
- g_slist_free (ginst_data.list);
- g_slist_free (gclass_data.list);
- /* delete_image_set () modifies the lists so make a copy */
- set_list = g_slist_copy (image->image_sets);
- for (l = set_list; l; l = l->next) {
- MonoImageSet *set = l->data;
- delete_image_set (set);
- }
- g_slist_free (set_list);
- mono_loader_unlock ();
- return free_list;
- }
- static void
- free_inflated_method (MonoMethodInflated *imethod)
- {
- int i;
- MonoMethod *method = (MonoMethod*)imethod;
- mono_marshal_free_inflated_wrappers (method);
- if (method->signature)
- mono_metadata_free_inflated_signature (method->signature);
- 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))) {
- MonoMethodHeader *header = imethod->header;
- if (header) {
- /* Allocated in inflate_generic_header () */
- for (i = 0; i < header->num_locals; ++i)
- mono_metadata_free_type (header->locals [i]);
- g_free (header->clauses);
- g_free (header);
- }
- }
- g_free (method);
- }
- static void
- free_generic_inst (MonoGenericInst *ginst)
- {
- int i;
- /* The ginst itself is allocated from the image set mempool */
- for (i = 0; i < ginst->type_argc; ++i)
- mono_metadata_free_type (ginst->type_argv [i]);
- }
- static void
- free_generic_class (MonoGenericClass *gclass)
- {
- /* The gclass itself is allocated from the image set mempool */
- if (gclass->is_dynamic)
- mono_reflection_free_dynamic_generic_class (gclass);
- if (gclass->cached_class && gclass->cached_class->interface_id)
- mono_unload_interface_id (gclass->cached_class);
- }
- static void
- free_inflated_signature (MonoInflatedMethodSignature *sig)
- {
- mono_metadata_free_inflated_signature (sig->sig);
- g_free (sig);
- }
- /*
- * LOCKING: assumes the loader lock is held.
- */
- MonoMethodInflated*
- mono_method_inflated_lookup (MonoMethodInflated* method, gboolean cache)
- {
- CollectData data;
- MonoImageSet *set;
- collect_data_init (&data);
- collect_method_images (method, &data);
- set = get_image_set (data.images, data.nimages);
- collect_data_free (&data);
- if (cache) {
- g_hash_table_insert (set->gmethod_cache, method, method);
- return method;
- } else {
- return g_hash_table_lookup (set->gmethod_cache, method);
- }
- }
- /*
- * mono_metadata_get_inflated_signature:
- *
- * Given an inflated signature and a generic context, return a canonical copy of the
- * signature. The returned signature might be equal to SIG or it might be a cached copy.
- */
- MonoMethodSignature *
- mono_metadata_get_inflated_signature (MonoMethodSignature *sig, MonoGenericContext *context)
- {
- MonoInflatedMethodSignature helper;
- MonoInflatedMethodSignature *res;
- CollectData data;
- MonoImageSet *set;
- mono_loader_lock ();
- helper.sig = sig;
- helper.context.class_inst = context->class_inst;
- helper.context.method_inst = context->method_inst;
- collect_data_init (&data);
- collect_inflated_signature_images (&helper, &data);
- set = get_image_set (data.images, data.nimages);
- collect_data_free (&data);
- res = g_hash_table_lookup (set->gsignature_cache, &helper);
- if (!res) {
- res = g_new0 (MonoInflatedMethodSignature, 1);
- res->sig = sig;
- res->context.class_inst = context->class_inst;
- res->context.method_inst = context->method_inst;
- g_hash_table_insert (set->gsignature_cache, res, res);
- }
- mono_loader_unlock ();
- return res->sig;
- }
- /*
- * mono_metadata_get_generic_inst:
- *
- * Given a list of types, return a MonoGenericInst that represents that list.
- * The returned MonoGenericInst has its own copy of the list of types. The list
- * passed in the argument can be freed, modified or disposed of.
- *
- */
- MonoGenericInst *
- mono_metadata_get_generic_inst (int type_argc, MonoType **type_argv)
- {
- MonoGenericInst *ginst;
- gboolean is_open;
- int i;
- int size = MONO_SIZEOF_GENERIC_INST + type_argc * sizeof (MonoType *);
- CollectData data;
- MonoImageSet *set;
- for (i = 0; i < type_argc; ++i)
- if (mono_class_is_open_constructed_type (type_argv [i]))
- break;
- is_open = (i < type_argc);
- ginst = g_alloca (size);
- memset (ginst, 0, sizeof (MonoGenericInst));
- ginst->is_open = is_open;
- ginst->type_argc = type_argc;
- memcpy (ginst->type_argv, type_argv, type_argc * sizeof (MonoType *));
- mono_loader_lock ();
- collect_data_init (&data);
- collect_ginst_images (ginst, &data);
- set = get_image_set (data.images, data.nimages);
- collect_data_free (&data);
- ginst = g_hash_table_lookup (set->ginst_cache, ginst);
- if (!ginst) {
- ginst = mono_image_set_alloc0 (set, size);
- #ifndef MONO_SMALL_CONFIG
- ginst->id = ++next_generic_inst_id;
- #endif
- ginst->is_open = is_open;
- ginst->type_argc = type_argc;
- for (i = 0; i < type_argc; ++i)
- ginst->type_argv [i] = mono_metadata_type_dup (NULL, type_argv [i]);
- g_hash_table_insert (set->ginst_cache, ginst, ginst);
- }
- mono_loader_unlock ();
- return ginst;
- }
- static gboolean
- mono_metadata_is_type_builder_generic_type_definition (MonoClass *container_class, MonoGenericInst *inst, gboolean is_dynamic)
- {
- MonoGenericContainer *container = container_class->generic_container;
- if (!is_dynamic || container_class->wastypebuilder || container->type_argc != inst->type_argc)
- return FALSE;
- return inst == container->context.class_inst;
- }
- /*
- * mono_metadata_lookup_generic_class:
- *
- * Returns a MonoGenericClass with the given properties.
- *
- */
- MonoGenericClass *
- mono_metadata_lookup_generic_class (MonoClass *container_class, MonoGenericInst *inst, gboolean is_dynamic)
- {
- MonoGenericClass *gclass;
- MonoGenericClass helper;
- gboolean is_tb_open = mono_metadata_is_type_builder_generic_type_definition (container_class, inst, is_dynamic);
- MonoImageSet *set;
- CollectData data;
- helper.container_class = container_class;
- helper.context.class_inst = inst;
- helper.context.method_inst = NULL;
- helper.is_dynamic = is_dynamic; /* We use this in a hash lookup, which does not attempt to downcast the pointer */
- helper.is_tb_open = is_tb_open;
- helper.cached_class = NULL;
- mono_loader_lock ();
- collect_data_init (&data);
- collect_gclass_images (&helper, &data);
- set = get_image_set (data.images, data.nimages);
- collect_data_free (&data);
- gclass = g_hash_table_lookup (set->gclass_cache, &helper);
- /* A tripwire just to keep us honest */
- g_assert (!helper.cached_class);
- if (gclass) {
- mono_loader_unlock ();
- return gclass;
- }
- if (is_dynamic) {
- MonoDynamicGenericClass *dgclass = mono_image_set_new0 (set, MonoDynamicGenericClass, 1);
- gclass = &dgclass->generic_class;
- gclass->is_dynamic = 1;
- } else {
- gclass = mono_image_set_new0 (set, MonoGenericClass, 1);
- }
- gclass->is_tb_open = is_tb_open;
- gclass->container_class = container_class;
- gclass->context.class_inst = inst;
- gclass->context.method_inst = NULL;
- gclass->owner = set;
- if (inst == container_class->generic_container->context.class_inst && !is_tb_open)
- gclass->cached_class = container_class;
- g_hash_table_insert (set->gclass_cache, gclass, gclass);
- mono_loader_unlock ();
- return gclass;
- }
- /*
- * mono_metadata_inflate_generic_inst:
- *
- * Instantiate the generic instance @ginst with the context @context.
- * Check @error for success.
- *
- */
- MonoGenericInst *
- mono_metadata_inflate_generic_inst (MonoGenericInst *ginst, MonoGenericContext *context, MonoError *error)
- {
- MonoType **type_argv;
- MonoGenericInst *nginst = NULL;
- int i, count = 0;
- mono_error_init (error);
- if (!ginst->is_open)
- return ginst;
- type_argv = g_new0 (MonoType*, ginst->type_argc);
- for (i = 0; i < ginst->type_argc; i++) {
- type_argv [i] = mono_class_inflate_generic_type_checked (ginst->type_argv [i], context, error);
- if (!mono_error_ok (error))
- goto cleanup;
- ++count;
- }
- nginst = mono_metadata_get_generic_inst (ginst->type_argc, type_argv);
- cleanup:
- for (i = 0; i < count; i++)
- mono_metadata_free_type (type_argv [i]);
- g_free (type_argv);
- return nginst;
- }
- MonoGenericInst *
- mono_metadata_parse_generic_inst (MonoImage *m, MonoGenericContainer *container,
- int count, const char *ptr, const char **rptr)
- {
- MonoType **type_argv;
- MonoGenericInst *ginst;
- int i;
- type_argv = g_new0 (MonoType*, count);
- for (i = 0; i < count; i++) {
- MonoType *t = mono_metadata_parse_type_full (m, container, MONO_PARSE_TYPE, 0, ptr, &ptr);
- if (!t) {
- g_free (type_argv);
- return NULL;
- }
- type_argv [i] = t;
- }
- if (rptr)
- *rptr = ptr;
- ginst = mono_metadata_get_generic_inst (count, type_argv);
- g_free (type_argv);
- return ginst;
- }
- static gboolean
- do_mono_metadata_parse_generic_class (MonoType *type, MonoImage *m, MonoGenericContainer *container,
- const char *ptr, const char **rptr)
- {
- MonoGenericInst *inst;
- MonoClass *gklass;
- MonoType *gtype;
- int count;
- gtype = mono_metadata_parse_type (m, MONO_PARSE_TYPE, 0, ptr, &ptr);
- if (gtype == NULL)
- return FALSE;
- gklass = mono_class_from_mono_type (gtype);
- if (!gklass->generic_container)
- return FALSE;
- count = mono_metadata_decode_value (ptr, &ptr);
- inst = mono_metadata_parse_generic_inst (m, container, count, ptr, &ptr);
- if (inst == NULL)
- return FALSE;
- if (rptr)
- *rptr = ptr;
- type->data.generic_class = mono_metadata_lookup_generic_class (gklass, inst, FALSE);
- return TRUE;
- }
- /*
- * select_container:
- * @gc: The generic container to normalize
- * @type: The kind of generic parameters the resulting generic-container should contain
- */
- static MonoGenericContainer *
- select_container (MonoGenericContainer *gc, MonoTypeEnum type)
- {
- gboolean is_var = (type == MONO_TYPE_VAR);
- if (!gc)
- return NULL;
- g_assert (is_var || type == MONO_TYPE_MVAR);
- if (is_var) {
- if (gc->is_method || gc->parent)
- /*
- * The current MonoGenericContainer is a generic method -> its `parent'
- * points to the containing class'es container.
- */
- return gc->parent;
- }
- return gc;
- }
- /*
- * mono_metadata_parse_generic_param:
- * @generic_container: Our MonoClass's or MonoMethod's MonoGenericContainer;
- * see mono_metadata_parse_type_full() for details.
- * Internal routine to parse a generic type parameter.
- * LOCKING: Acquires the loader lock
- */
- static MonoGenericParam *
- mono_metadata_parse_generic_param (MonoImage *m, MonoGenericContainer *generic_container,
- MonoTypeEnum type, const char *ptr, const char **rptr)
- {
- int index = mono_metadata_decode_value (ptr, &ptr);
- if (rptr)
- *rptr = ptr;
- generic_container = select_container (generic_container, type);
- if (!generic_container) {
- /* Create dummy MonoGenericParam */
- MonoGenericParam *param;
- param = mono_image_alloc0 (m, sizeof (MonoGenericParam));
- param->num = index;
- param->image = m;
- return param;
- }
- if (index >= generic_container->type_argc)
- return NULL;
- return mono_generic_container_get_param (generic_container, index);
- }
- /*
- * mono_metadata_get_shared_type:
- *
- * Return a shared instance of TYPE, if available, NULL otherwise.
- * Shared MonoType instances help save memory. Their contents should not be modified
- * by the caller. They do not need to be freed as their lifetime is bound by either
- * the lifetime of the runtime (builtin types), or the lifetime of the MonoClass
- * instance they are embedded in. If they are freed, they should be freed using
- * mono_metadata_free_type () instead of g_free ().
- */
- MonoType*
- mono_metadata_get_shared_type (MonoType *type)
- {
- MonoType *cached;
- /* No need to use locking since nobody is modifying the hash table */
- if ((cached = g_hash_table_lookup (type_cache, type)))
- return cached;
- switch (type->type){
- case MONO_TYPE_CLASS:
- case MONO_TYPE_VALUETYPE:
- if (type == &type->data.klass->byval_arg)
- return type;
- if (type == &type->data.klass->this_arg)
- return type;
- break;
- }
- return NULL;
- }
- static gboolean
- compare_type_literals (int class_type, int type_type)
- {
- /* byval_arg.type can be zero if we're decoding a type that references a class been loading.
- * See mcs/test/gtest-440. and #650936.
- * FIXME This better be moved to the metadata verifier as it can catch more cases.
- */
- if (!class_type)
- return TRUE;
- /* NET 1.1 assemblies might encode string and object in a denormalized way.
- * See #675464.
- */
- if (type_type == MONO_TYPE_CLASS && (class_type == MONO_TYPE_STRING || class_type == MONO_TYPE_OBJECT))
- return TRUE;
- return class_type == type_type;
- }
- /*
- * do_mono_metadata_parse_type:
- * @type: MonoType to be filled in with the return value
- * @m: image context
- * @generic_context: generics_context
- * @transient: whenever to allocate data from the heap
- * @ptr: pointer to the encoded type
- * @rptr: pointer where the end of the encoded type is saved
- *
- * Internal routine used to "fill" the contents of @type from an
- * allocated pointer. This is done this way to avoid doing too
- * many mini-allocations (particularly for the MonoFieldType which
- * most of the time is just a MonoType, but sometimes might be augmented).
- *
- * This routine is used by mono_metadata_parse_type and
- * mono_metadata_parse_field_type
- *
- * This extracts a Type as specified in Partition II (22.2.12)
- *
- * Returns: FALSE if the type could not be loaded
- */
- static gboolean
- do_mono_metadata_parse_type (MonoType *type, MonoImage *m, MonoGenericContainer *container,
- gboolean transient, const char *ptr, const char **rptr)
- {
- gboolean ok = TRUE;
- type->type = mono_metadata_decode_value (ptr, &ptr);
-
- switch (type->type){
- case MONO_TYPE_VOID:
- case MONO_TYPE_BOOLEAN:
- case MONO_TYPE_CHAR:
- case MONO_TYPE_I1:
- case MONO_TYPE_U1:
- case MONO_TYPE_I2:
- case MONO_TYPE_U2:
- case MONO_TYPE_I4:
- case MONO_TYPE_U4:
- case MONO_TYPE_I8:
- case MONO_TYPE_U8:
- case MONO_TYPE_R4:
- case MONO_TYPE_R8:
- case MONO_TYPE_I:
- case MONO_TYPE_U:
- case MONO_TYPE_STRING:
- case MONO_TYPE_OBJECT:
- case MONO_TYPE_TYPEDBYREF:
- break;
- case MONO_TYPE_VALUETYPE:
- case MONO_TYPE_CLASS: {
- guint32 token;
- MonoClass *class;
- token = mono_metadata_parse_typedef_or_ref (m, ptr, &ptr);
- class = mono_class_get (m, token);
- type->data.klass = class;
- if (!class)
- return FALSE;
- if (!compare_type_literals (class->byval_arg.type, type->type))
- return FALSE;
- break;
- }
- case MONO_TYPE_SZARRAY: {
- MonoType *etype = mono_metadata_parse_type_full (m, container, MONO_PARSE_MOD_TYPE, 0, ptr, &ptr);
- if (!etype)
- return FALSE;
- type->data.klass = mono_class_from_mono_type (etype);
- if (!type->data.klass)
- return FALSE;
- break;
- }
- case MONO_TYPE_PTR:
- type->data.type = mono_metadata_parse_type_internal (m, container, MONO_PARSE_MOD_TYPE, 0, transient, ptr, &ptr);
- if (!type->data.type)
- return FALSE;
- break;
- case MONO_TYPE_FNPTR:
- type->data.method = mono_metadata_parse_method_signature_full (m, container, 0, ptr, &ptr);
- if (!type->data.method)
- return FALSE;
- break;
- case MONO_TYPE_ARRAY:
- type->data.array = mono_metadata_parse_array_internal (m, container, transient, ptr, &ptr);
- if (!type->data.array)
- return FALSE;
- break;
- case MONO_TYPE_MVAR:
- if (container && !container->is_method)
- return FALSE;
- case MONO_TYPE_VAR:
- type->data.generic_param = mono_metadata_parse_generic_param (m, container, type->type, ptr, &ptr);
- if (!type->data.generic_param)
- return FALSE;
- break;
- case MONO_TYPE_GENERICINST:
- ok = do_mono_metadata_parse_generic_class (type, m, container, ptr, &ptr);
- break;
- default:
- g_warning ("type 0x%02x not handled in do_mono_metadata_parse_type on image %s", type->type, m->name);
- return FALSE;
- }
-
- if (rptr)
- *rptr = ptr;
- return ok;
- }
- /*
- * mono_metadata_free_type:
- * @type: type to free
- *
- * Free the memory allocated for type @type which is allocated on the heap.
- */
- void
- mono_metadata_free_type (MonoType *type)
- {
- if (type >= builtin_types && type < builtin_types + NBUILTIN_TYPES ())
- return;
-
- switch (type->type){
- case MONO_TYPE_OBJECT:
- case MONO_TYPE_STRING:
- if (!type->data.klass)
- break;
- /* fall through */
- case MONO_TYPE_CLASS:
- case MONO_TYPE_VALUETYPE:
- if (type == &type->data.klass->byval_arg || type == &type->data.klass->this_arg)
- return;
- break;
- case MONO_TYPE_PTR:
- mono_metadata_free_type (type->data.type);
- break;
- case MONO_TYPE_FNPTR:
- mono_metadata_free_method_signature (type->data.method);
- break;
- case MONO_TYPE_ARRAY:
- mono_metadata_free_array (type->data.array);
- break;
- }
- g_free (type);
- }
- #if 0
- static void
- hex_dump (const char *buffer, int base, int count)
- {
- int show_header = 1;
- int i;
- if (count < 0){
- count = -count;
- show_header = 0;
- }
-
- for (i = 0; i < count; i++){
- if (show_header)
- if ((i % 16) == 0)
- printf ("\n0x%08x: ", (unsigned char) base + i);
- printf ("%02x ", (unsigned char) (buffer [i]));
- }
- fflush (stdout);
- }
- #endif
- /**
- * @ptr: Points to the beginning of the Section Data (25.3)
- */
- static MonoExceptionClause*
- parse_section_data (MonoImage *m, int *num_clauses, const unsigned char *ptr)
- {
- unsigned char sect_data_flags;
- const unsigned char *sptr;
- int is_fat;
- guint32 sect_data_len;
- MonoExceptionClause* clauses = NULL;
-
- while (1) {
- /* align on 32-bit boundary */
- sptr = ptr = dword_align (ptr);
- sect_data_flags = *ptr;
- ptr++;
-
- is_fat = sect_data_flags & METHOD_HEADER_SECTION_FAT_FORMAT;
- if (is_fat) {
- sect_data_len = (ptr [2] << 16) | (ptr [1] << 8) | ptr [0];
- ptr += 3;
- } else {
- sect_data_len = ptr [0];
- ++ptr;
- }
- /*
- g_print ("flags: %02x, len: %d\n", sect_data_flags, sect_data_len);
- hex_dump (sptr, 0, sect_data_len+8);
- g_print ("\nheader: ");
- hex_dump (sptr-4, 0, 4);
- g_print ("\n");
- */
-
- if (sect_data_flags & METHOD_HEADER_SECTION_EHTABLE) {
- const unsigned char *p = dword_align (ptr);
- int i;
- *num_clauses = is_fat ? sect_data_len / 24: sect_data_len / 12;
- /* we could just store a pointer if we don't need to byteswap */
- clauses = g_malloc0 (sizeof (MonoExceptionClause) * (*num_clauses));
- for (i = 0; i < *num_clauses; ++i) {
- MonoExceptionClause *ec = &clauses [i];
- guint32 tof_value;
- if (is_fat) {
- ec->flags = read32 (p);
- ec->try_offset = read32 (p + 4);
- ec->try_len = read32 (p + 8);
- ec->handler_offset = read32 (p + 12);
- ec->handler_len = read32 (p + 16);
- tof_value = read32 (p + 20);
- p += 24;
- } else {
- ec->flags = read16 (p);
- ec->try_offset = read16 (p + 2);
- ec->try_len = *(p + 4);
- ec->handler_offset = read16 (p + 5);
- ec->handler_len = *(p + 7);
- tof_value = read32 (p + 8);
- p += 12;
- }
- if (ec->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
- ec->data.filter_offset = tof_value;
- } else if (ec->flags == MONO_EXCEPTION_CLAUSE_NONE) {
- ec->data.catch_class = tof_value? mono_class_get (m, tof_value): 0;
- } else {
- ec->data.catch_class = NULL;
- }
- /* g_print ("try %d: %x %04x-%04x %04x\n", i, ec->flags, ec->try_offset, ec->try_offset+ec->try_len, ec->try_len); */
- }
- }
- if (sect_data_flags & METHOD_HEADER_SECTION_MORE_SECTS)
- ptr += sect_data_len - 4; /* LAMESPEC: it seems the size includes the header */
- else
- return clauses;
- }
- }
- /*
- * mono_method_get_header_summary:
- * @method: The method to get the header.
- * @summary: Where to store the header
- *
- *
- * Returns: true if the header was properly decoded.
- */
- gboolean
- mono_method_get_header_summary (MonoMethod *method, MonoMethodHeaderSummary *summary)
- {
- int idx;
- guint32 rva;
- MonoImage* img;
- const char *ptr;
- unsigned char flags, format;
- guint16 fat_flags;
- /*Only the GMD has a pointer to the metadata.*/
- while (method->is_inflated)
- method = ((MonoMethodInflated*)method)->declaring;
- summary->code_size = 0;
- summary->has_clauses = FALSE;
- /*FIXME extract this into a MACRO and share it with mono_method_get_header*/
- 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))
- return FALSE;
- if (method->wrapper_type != MONO_WRAPPER_NONE || method->sre_method) {
- MonoMethodHeader *header = ((MonoMethodWrapper *)method)->header;
- if (!header)
- return FALSE;
- summary->code_size = header->code_size;
- summary->has_clauses = header->num_clauses > 0;
- return TRUE;
- }
- idx = mono_metadata_token_index (method->token);
- img = method->klass->image;
- rva = mono_metadata_decode_row_col (&img->tables [MONO_TABLE_METHOD], idx - 1, MONO_METHOD_RVA);
- /*We must run the verifier since we'll be decoding it.*/
- if (!mono_verifier_verify_method_header (img, rva, NULL))
- return FALSE;
- ptr = mono_image_rva_map (img, rva);
- g_assert (ptr);
- flags = *(const unsigned char *)ptr;
- format = flags & METHOD_HEADER_FORMAT_MASK;
- switch (format) {
- case METHOD_HEADER_TINY_FORMAT:
- ptr++;
- summary->code_size = flags >> 2;
- break;
- case METHOD_HEADER_FAT_FORMAT:
- fat_flags = read16 (ptr);
- ptr += 4;
- summary->code_size = read32 (ptr);
- if (fat_flags & METHOD_HEADER_MORE_SECTS)
- summary->has_clauses = TRUE;
- break;
- default:
- return FALSE;
- }
- return TRUE;
- }
- /*
- * mono_metadata_parse_mh_full:
- * @m: metadata context
- * @generic_context: generics context
- * @ptr: pointer to the method header.
- *
- * Decode the method header at @ptr, including pointer to the IL code,
- * info about local variables and optional exception tables.
- * This is a Mono runtime internal function.
- *
- * LOCKING: Acquires the loader lock.
- *
- * Returns: a transient MonoMethodHeader allocated from the heap.
- */
- MonoMethodHeader *
- mono_metadata_parse_mh_full (MonoImage *m, MonoGenericContainer *container, const char *ptr)
- {
- MonoMethodHeader *mh;
- unsigned char flags = *(const unsigned char *) ptr;
- unsigned char format = flags & METHOD_HEADER_FORMAT_MASK;
- guint16 fat_flags;
- guint32 local_var_sig_tok, max_stack, code_size, init_locals;
- const unsigned char *code;
- MonoExceptionClause* clauses = NULL;
- int hsize, num_clauses = 0;
- MonoTableInfo *t = &m->tables [MONO_TABLE_STANDALONESIG];
- guint32 cols [MONO_STAND_ALONE_SIGNATURE_SIZE];
- g_return_val_if_fail (ptr != NULL, NULL);
- switch (format) {
- case METHOD_HEADER_TINY_FORMAT:
- mh = g_malloc0 (MONO_SIZEOF_METHOD_HEADER);
- ptr++;
- mh->max_stack = 8;
- mh->is_transient = TRUE;
- local_var_sig_tok = 0;
- mh->code_size = flags >> 2;
- mh->code = (unsigned char*)ptr;
- return mh;
- case METHOD_HEADER_FAT_FORMAT:
- fat_flags = read16 (ptr);
- ptr += 2;
- hsize = (fat_flags >> 12) & 0xf;
- max_stack = read16 (ptr);
- ptr += 2;
- code_size = read32 (ptr);
- ptr += 4;
- local_var_sig_tok = read32 (ptr);
- ptr += 4;
- if (fat_flags & METHOD_HEADER_INIT_LOCALS)
- init_locals = 1;
- else
- init_locals = 0;
- code = (unsigned char*)ptr;
- if (!(fat_flags & METHOD_HEADER_MORE_SECTS))
- break;
- /*
- * There are more sections
- */
- ptr = (char*)code + code_size;
- break;
- default:
- return NULL;
- }
- if (local_var_sig_tok) {
- int idx = (local_var_sig_tok & 0xffffff)-1;
- if (idx >= t->rows || idx < 0)
- return NULL;
- mono_metadata_decode_row (t, idx, cols, 1);
- if (!mono_verifier_verify_standalone_signature (m, cols [MONO_STAND_ALONE_SIGNATURE], NULL))
- return NULL;
- }
- if (fat_flags & METHOD_HEADER_MORE_SECTS)
- clauses = parse_section_data (m, &num_clauses, (const unsigned char*)ptr);
- if (local_var_sig_tok) {
- const char *locals_ptr;
- int len=0, i, bsize;
- locals_ptr = mono_metadata_blob_heap (m, cols [MONO_STAND_ALONE_SIGNATURE]);
- bsize = mono_metadata_decode_blob_size (locals_ptr, &locals_ptr);
- if (*locals_ptr != 0x07)
- g_warning ("wrong signature for locals blob");
- locals_ptr++;
- len = mono_metadata_decode_value (locals_ptr, &locals_ptr);
- mh = g_malloc0 (MONO_SIZEOF_METHOD_HEADER + len * sizeof (MonoType*) + num_clauses * sizeof (MonoExceptionClause));
- mh->num_locals = len;
- for (i = 0; i < len; ++i) {
- mh->locals [i] = mono_metadata_parse_type_internal (m, container,
- MONO_PARSE_LOCAL, 0, TRUE, locals_ptr, &locals_ptr);
- if (!mh->locals [i]) {
- g_free (clauses);
- g_free (mh);
- return NULL;
- }
- }
- } else {
- mh = g_malloc0 (MONO_SIZEOF_METHOD_HEADER + num_clauses * sizeof (MonoExceptionClause));
- }
- mh->code = code;
- mh->code_size = code_size;
- mh->max_stack = max_stack;
- mh->is_transient = TRUE;
- mh->init_locals = init_locals;
- if (clauses) {
- MonoExceptionClause* clausesp = (MonoExceptionClause*)&mh->locals [mh->num_locals];
- memcpy (clausesp, clauses, num_clauses * sizeof (MonoExceptionClause));
- g_free (clauses);
- mh->clauses = clausesp;
- mh->num_clauses = num_clauses;
- }
- return mh;
- }
- /*
- * mono_metadata_parse_mh:
- * @generic_context: generics context
- * @ptr: pointer to the method header.
- *
- * Decode the method header at @ptr, including pointer to the IL code,
- * info about local variables and optional exception tables.
- * This is a Mono runtime internal function.
- *
- * Returns: a MonoMethodHeader.
- */
- MonoMethodHeader *
- mono_metadata_parse_mh (MonoImage *m, const char *ptr)
- {
- MonoMethodHeader *res;
- mono_loader_lock ();
- res = mono_metadata_parse_mh_full (m, NULL, ptr);
- mono_loader_unlock ();
- return res;
- }
- /*
- * mono_metadata_free_mh:
- * @mh: a method header
- *
- * Free the memory allocated for the method header.
- */
- void
- mono_metadata_free_mh (MonoMethodHeader *mh)
- {
- int i;
- /* If it is not transient it means it's part of a wrapper method,
- * or a SRE-generated method, so the lifetime in that case is
- * dictated by the method's own lifetime
- */
- if (mh->is_transient) {
- for (i = 0; i < mh->num_locals; ++i)
- mono_metadata_free_type (mh->locals [i]);
- g_free (mh);
- }
- }
- /*
- * mono_method_header_get_code:
- * @header: a MonoMethodHeader pointer
- * @code_size: memory location for returning the code size
- * @max_stack: memory location for returning the max stack
- *
- * Method header accessor to retreive info about the IL code properties:
- * a pointer to the IL code itself, the size of the code and the max number
- * of stack slots used by the code.
- *
- * Returns: pointer to the IL code represented by the method header.
- */
- const unsigned char*
- mono_method_header_get_code (MonoMethodHeader *header, guint32* code_size, guint32* max_stack)
- {
- if (code_size)
- *code_size = header->code_size;
- if (max_stack)
- *max_stack = header->max_stack;
- return header->code;
- }
- /*
- * mono_method_header_get_locals:
- * @header: a MonoMethodHeader pointer
- * @num_locals: memory location for returning the number of local variables
- * @init_locals: memory location for returning the init_locals flag
- *
- * Method header accessor to retreive info about the local variables:
- * an array of local types, the number of locals and whether the locals
- * are supposed to be initialized to 0 on method entry
- *
- * Returns: pointer to an array of types of the local variables
- */
- MonoType**
- mono_method_header_get_locals (MonoMethodHeader *header, guint32* num_locals, gboolean *init_locals)
- {
- if (num_locals)
- *num_locals = header->num_locals;
- if (init_locals)
- *init_locals = header->init_locals;
- return header->locals;
- }
- /*
- * mono_method_header_get_num_clauses:
- * @header: a MonoMethodHeader pointer
- *
- * Method header accessor to retreive the number of exception clauses.
- *
- * Returns: the number of exception clauses present
- */
- int
- mono_method_header_get_num_clauses (MonoMethodHeader *header)
- {
- return header->num_clauses;
- }
- /*
- * mono_method_header_get_clauses:
- * @header: a MonoMethodHeader pointer
- * @method: MonoMethod the header belongs to
- * @iter: pointer to a iterator
- * @clause: pointer to a MonoExceptionClause structure which will be filled with the info
- *
- * Get the info about the exception clauses in the method. Set *iter to NULL to
- * initiate the iteration, then call the method repeatedly until it returns FALSE.
- * At each iteration, the structure pointed to by clause if filled with the
- * exception clause information.
- *
- * Returns: TRUE if clause was filled with info, FALSE if there are no more exception
- * clauses.
- */
- int
- mono_method_header_get_clauses (MonoMethodHeader *header, MonoMethod *method, gpointer *iter, MonoExceptionClause *clause)
- {
- MonoExceptionClause *sc;
- /* later we'll be able to use this interface to parse the clause info on demand,
- * without allocating anything.
- */
- if (!iter || !header->num_clauses)
- return FALSE;
- if (!*iter) {
- *iter = sc = header->clauses;
- *clause = *sc;
- return TRUE;
- }
- sc = *iter;
- sc++;
- if (sc < header->clauses + header->num_clauses) {
- *iter = sc;
- *clause = *sc;
- return TRUE;
- }
- return FALSE;
- }
- /**
- * mono_metadata_parse_field_type:
- * @m: metadata context to extract information from
- * @ptr: pointer to the field signature
- * @rptr: pointer updated to match the end of the decoded stream
- *
- * Parses the field signature, and returns the type information for it.
- *
- * Returns: The MonoType that was extracted from @ptr.
- */
- MonoType *
- mono_metadata_parse_field_type (MonoImage *m, short field_flags, const char *ptr, const char **rptr)
- {
- return mono_metadata_parse_type (m, MONO_PARSE_FIELD, field_flags, ptr, rptr);
- }
- /**
- * mono_metadata_parse_param:
- * @m: metadata context to extract information from
- * @ptr: pointer to the param signature
- * @rptr: pointer updated to match the end of the decoded stream
- *
- * Parses the param signature, and returns the type information for it.
- *
- * Returns: The MonoType that was extracted from @ptr.
- */
- MonoType *
- mono_metadata_parse_param (MonoImage *m, const char *ptr, const char **rptr)
- {
- return mono_metadata_parse_type (m, MONO_PARSE_PARAM, 0, ptr, rptr);
- }
- /*
- * mono_metadata_token_from_dor:
- * @dor_token: A TypeDefOrRef coded index
- *
- * dor_token is a TypeDefOrRef coded index: it contains either
- * a TypeDef, TypeRef or TypeSpec in the lower bits, and the upper
- * bits contain an index into the table.
- *
- * Returns: an expanded token
- */
- guint32
- mono_metadata_token_from_dor (guint32 dor_index)
- {
- guint32 table, idx;
- table = dor_index & 0x03;
- idx = dor_index >> 2;
- switch (table){
- case 0: /* TypeDef */
- return MONO_TOKEN_TYPE_DEF | idx;
- case 1: /* TypeRef */
- return MONO_TOKEN_TYPE_REF | idx;
- case 2: /* TypeSpec */
- return MONO_TOKEN_TYPE_SPEC | idx;
- default:
- g_assert_not_reached ();
- }
- return 0;
- }
- /*
- * We use this to pass context information to the row locator
- */
- typedef struct {
- int idx; /* The index that we are trying to locate */
- int col_idx; /* The index in the row where idx may be stored */
- MonoTableInfo *t; /* pointer to the table */
- guint32 result;
- } locator_t;
- /*
- * How the row locator works.
- *
- * Table A
- * ___|___
- * ___|___ Table B
- * ___|___------> _______
- * ___|___ _______
- *
- * A column in the rows of table A references an index in table B.
- * For example A may be the TYPEDEF table and B the METHODDEF table.
- *
- * Given an index in table B we want to get the row in table A
- * where the column n references our index in B.
- *
- * In the locator_t structure:
- * t is table A
- * col_idx is the column number
- * index is the index in table B
- * result will be the index in table A
- *
- * Examples:
- * Table A Table B column (in table A)
- * TYPEDEF METHODDEF MONO_TYPEDEF_METHOD_LIST
- * TYPEDEF FIELD MONO_TYPEDEF_FIELD_LIST
- * PROPERTYMAP PROPERTY MONO_PROPERTY_MAP_PROPERTY_LIST
- * INTERFIMPL TYPEDEF MONO_INTERFACEIMPL_CLASS
- * METHODSEM PROPERTY ASSOCIATION (encoded index)
- *
- * Note that we still don't support encoded indexes.
- *
- */
- static int
- typedef_locator (const void *a, const void *b)
- {
- locator_t *loc = (locator_t *) a;
- const char *bb = (const char *) b;
- int typedef_index = (bb - loc->t->base) / loc->t->row_size;
- guint32 col, col_next;
- col = mono_metadata_decode_row_col (loc->t, typedef_index, loc->col_idx);
- if (loc->idx < col)
- return -1;
- /*
- * Need to check that the next row is valid.
- */
- if (typedef_index + 1 < loc->t->rows) {
- col_next = mono_metadata_decode_row_col (loc->t, typedef_index + 1, loc->col_idx);
- if (loc->idx >= col_next)
- return 1;
- if (col == col_next)
- return 1;
- }
- loc->result = typedef_index;
-
- return 0;
- }
- static int
- table_locator (const void *a, const void *b)
- {
- locator_t *loc = (locator_t *) a;
- const char *bb = (const char *) b;
- guint32 table_index = (bb - loc->t->base) / loc->t->row_size;
- guint32 col;
-
- col = mono_metadata_decode_row_col (loc->t, table_index, loc->col_idx);
- if (loc->idx == col) {
- loc->result = table_index;
- return 0;
- }
- if (loc->idx < col)
- return -1;
- else
- return 1;
- }
- static int
- declsec_locator (const void *a, const void *b)
- {
- locator_t *loc = (locator_t *) a;
- const char *bb = (const char *) b;
- guint32 table_index = (bb - loc->t->base) / loc->t->row_size;
- guint32 col;
- col = mono_metadata_decode_row_col (loc->t, table_index, loc->col_idx);
- if (loc->idx == col) {
- loc->result = table_index;
- return 0;
- }
- if (loc->idx < col)
- return -1;
- else
- return 1;
- }
- /**
- * search_ptr_table:
- *
- * Return the 1-based row index in TABLE, which must be one of the *Ptr tables,
- * which contains IDX.
- */
- static guint32
- search_ptr_table (MonoImage *image, int table, int idx)
- {
- MonoTableInfo *ptrdef = &image->tables [table];
- int i;
- /* Use a linear search to find our index in the table */
- for (i = 0; i < ptrdef->rows; i ++)
- /* All the Ptr tables have the same structure */
- if (mono_metadata_decode_row_col (ptrdef, i, 0) == idx)
- break;
- if (i < ptrdef->rows)
- return i + 1;
- else
- return idx;
- }
- /**
- * mono_metadata_typedef_from_field:
- * @meta: metadata context
- * @index: FieldDef token
- *
- * Returns: the 1-based index into the TypeDef table of the type that
- * declared the field described by @index, or 0 if not found.
- */
- guint32
- mono_metadata_typedef_from_field (MonoImage *meta, guint32 index)
- {
- MonoTableInfo *tdef = &meta->tables [MONO_TABLE_TYPEDEF];
- locator_t loc;
- if (!tdef->base)
- return 0;
- loc.idx = mono_metadata_token_index (index);
- loc.col_idx = MONO_TYPEDEF_FIELD_LIST;
- loc.t = tdef;
- if (meta->uncompressed_metadata)
- loc.idx = search_ptr_table (meta, MONO_TABLE_FIELD_POINTER, loc.idx);
- if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, typedef_locator))
- return 0;
- /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
- return loc.result + 1;
- }
- /*
- * mono_metadata_typedef_from_method:
- * @meta: metadata context
- * @index: MethodDef token
- *
- * Returns: the 1-based index into the TypeDef table of the type that
- * declared the method described by @index. 0 if not found.
- */
- guint32
- mono_metadata_typedef_from_method (MonoImage *meta, guint32 index)
- {
- MonoTableInfo *tdef = &meta->tables [MONO_TABLE_TYPEDEF];
- locator_t loc;
-
- if (!tdef->base)
- return 0;
- loc.idx = mono_metadata_token_index (index);
- loc.col_idx = MONO_TYPEDEF_METHOD_LIST;
- loc.t = tdef;
- if (meta->uncompressed_metadata)
- loc.idx = search_ptr_table (meta, MONO_TABLE_METHOD_POINTER, loc.idx);
- if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, typedef_locator))
- return 0;
- /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
- return loc.result + 1;
- }
- /*
- * mono_metadata_interfaces_from_typedef_full:
- * @meta: metadata context
- * @index: typedef token
- * @interfaces: Out parameter used to store the interface array
- * @count: Out parameter used to store the number of interfaces
- * @heap_alloc_result: if TRUE the result array will be g_malloc'd
- * @context: The generic context
- *
- * The array of interfaces that the @index typedef token implements is returned in
- * @interfaces. The number of elements in the array is returned in @count.
- *
- * LOCKING: Assumes the loader lock is held.
- *
- * Returns: TRUE on success, FALSE on failure.
- */
- gboolean
- mono_metadata_interfaces_from_typedef_full (MonoImage *meta, guint32 index, MonoClass ***interfaces, guint *count, gboolean heap_alloc_result, MonoGenericContext *context)
- {
- MonoTableInfo *tdef = &meta->tables [MONO_TABLE_INTERFACEIMPL];
- locator_t loc;
- guint32 start, pos;
- guint32 cols [MONO_INTERFACEIMPL_SIZE];
- MonoClass **result;
- *interfaces = NULL;
- *count = 0;
- if (!tdef->base)
- return TRUE;
- loc.idx = mono_metadata_token_index (index);
- loc.col_idx = MONO_INTERFACEIMPL_CLASS;
- loc.t = tdef;
- if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
- return TRUE;
- start = loc.result;
- /*
- * We may end up in the middle of the rows...
- */
- while (start > 0) {
- if (loc.idx == mono_metadata_decode_row_col (tdef, start - 1, MONO_INTERFACEIMPL_CLASS))
- start--;
- else
- break;
- }
- pos = start;
- while (pos < tdef->rows) {
- mono_metadata_decode_row (tdef, pos, cols, MONO_INTERFACEIMPL_SIZE);
- if (cols [MONO_INTERFACEIMPL_CLASS] != loc.idx)
- break;
- ++pos;
- }
- if (heap_alloc_result)
- result = g_new0 (MonoClass*, pos - start);
- else
- result = mono_image_alloc0 (meta, sizeof (MonoClass*) * (pos - start));
- pos = start;
- while (pos < tdef->rows) {
- MonoClass *iface;
-
- mono_metadata_decode_row (tdef, pos, cols, MONO_INTERFACEIMPL_SIZE);
- if (cols [MONO_INTERFACEIMPL_CLASS] != loc.idx)
- break;
- iface = mono_class_get_full (
- meta, mono_metadata_token_from_dor (cols [MONO_INTERFACEIMPL_INTERFACE]), context);
- if (iface == NULL)
- return FALSE;
- result [pos - start] = iface;
- ++pos;
- }
- *count = pos - start;
- *interfaces = result;
- return TRUE;
- }
- /*
- * @meta: metadata context
- * @index: typedef token
- * @count: Out parameter used to store the number of interfaces
- *
- * The array of interfaces that the @index typedef token implements is returned in
- * @interfaces. The number of elements in the array is returned in @count. The returned
- * array is g_malloc'd and the caller must free it.
- *
- * LOCKING: Acquires the loader lock .
- *
- * Returns: the interface array on success, NULL on failure.
- */
- MonoClass**
- mono_metadata_interfaces_from_typedef (MonoImage *meta, guint32 index, guint *count)
- {
- MonoClass **interfaces;
- gboolean rv;
- mono_loader_lock ();
- rv = mono_metadata_interfaces_from_typedef_full (meta, index, &interfaces, count, TRUE, NULL);
- mono_loader_unlock ();
- if (rv)
- return interfaces;
- else
- return NULL;
- }
- /*
- * mono_metadata_nested_in_typedef:
- * @meta: metadata context
- * @index: typedef token
- *
- * Returns: the 1-based index into the TypeDef table of the type
- * where the type described by @index is nested.
- * Retruns 0 if @index describes a non-nested type.
- */
- guint32
- mono_metadata_nested_in_typedef (MonoImage *meta, guint32 index)
- {
- MonoTableInfo *tdef = &meta->tables [MONO_TABLE_NESTEDCLASS];
- locator_t loc;
-
- if (!tdef->base)
- return 0;
- loc.idx = mono_metadata_token_index (index);
- loc.col_idx = MONO_NESTED_CLASS_NESTED;
- loc.t = tdef;
- if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
- return 0;
- /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
- return mono_metadata_decode_row_col (tdef, loc.result, MONO_NESTED_CLASS_ENCLOSING) | MONO_TOKEN_TYPE_DEF;
- }
- /*
- * mono_metadata_nesting_typedef:
- * @meta: metadata context
- * @index: typedef token
- *
- * Returns: the 1-based index into the TypeDef table of the first type
- * that is nested inside the type described by @index. The search starts at
- * @start_index. returns 0 if no such type is found.
- */
- guint32
- mono_metadata_nesting_typedef (MonoImage *meta, guint32 index, guint32 start_index)
- {
- MonoTableInfo *tdef = &meta->tables [MONO_TABLE_NESTEDCLASS];
- guint32 start;
- guint32 class_index = mono_metadata_token_index (index);
-
- if (!tdef->base)
- return 0;
- start = start_index;
- while (start <= tdef->rows) {
- if (class_index == mono_metadata_decode_row_col (tdef, start - 1, MONO_NESTED_CLASS_ENCLOSING))
- break;
- else
- start++;
- }
- if (start > tdef->rows)
- return 0;
- else
- return start;
- }
- /*
- * mono_metadata_packing_from_typedef:
- * @meta: metadata context
- * @index: token representing a type
- *
- * Returns: the info stored in the ClassLAyout table for the given typedef token
- * into the @packing and @size pointers.
- * Returns 0 if the info is not found.
- */
- guint32
- mono_metadata_packing_from_typedef (MonoImage *meta, guint32 index, guint32 *packing, guint32 *size)
- {
- MonoTableInfo *tdef = &meta->tables [MONO_TABLE_CLASSLAYOUT];
- locator_t loc;
- guint32 cols [MONO_CLASS_LAYOUT_SIZE];
-
- if (!tdef->base)
- return 0;
- loc.idx = mono_metadata_token_index (index);
- loc.col_idx = MONO_CLASS_LAYOUT_PARENT;
- loc.t = tdef;
- if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
- return 0;
- mono_metadata_decode_row (tdef, loc.result, cols, MONO_CLASS_LAYOUT_SIZE);
- if (packing)
- *packing = cols [MONO_CLASS_LAYOUT_PACKING_SIZE];
- if (size)
- *size = cols [MONO_CLASS_LAYOUT_CLASS_SIZE];
- /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
- return loc.result + 1;
- }
- /*
- * mono_metadata_custom_attrs_from_index:
- * @meta: metadata context
- * @index: token representing the parent
- *
- * Returns: the 1-based index into the CustomAttribute table of the first
- * attribute which belongs to the metadata object described by @index.
- * Returns 0 if no such attribute is found.
- */
- guint32
- mono_metadata_custom_attrs_from_index (MonoImage *meta, guint32 index)
- {
- MonoTableInfo *tdef = &meta->tables [MONO_TABLE_CUSTOMATTRIBUTE];
- locator_t loc;
-
- if (!tdef->base)
- return 0;
- loc.idx = index;
- loc.col_idx = MONO_CUSTOM_ATTR_PARENT;
- loc.t = tdef;
- /* FIXME: Index translation */
- if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
- return 0;
- /* Find the first entry by searching backwards */
- while ((loc.result > 0) && (mono_metadata_decode_row_col (tdef, loc.result - 1, MONO_CUSTOM_ATTR_PARENT) == index))
- loc.result --;
- /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
- return loc.result + 1;
- }
- /*
- * mono_metadata_declsec_from_index:
- * @meta: metadata context
- * @index: token representing the parent
- *
- * Returns: the 0-based index into the DeclarativeSecurity table of the first
- * attribute which belongs to the metadata object described by @index.
- * Returns -1 if no such attribute is found.
- */
- guint32
- mono_metadata_declsec_from_index (MonoImage *meta, guint32 index)
- {
- MonoTableInfo *tdef = &meta->tables [MONO_TABLE_DECLSECURITY];
- locator_t loc;
- if (!tdef->base)
- return -1;
- loc.idx = index;
- loc.col_idx = MONO_DECL_SECURITY_PARENT;
- loc.t = tdef;
- if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, declsec_locator))
- return -1;
- /* Find the first entry by searching backwards */
- while ((loc.result > 0) && (mono_metadata_decode_row_col (tdef, loc.result - 1, MONO_DECL_SECURITY_PARENT) == index))
- loc.result --;
- return loc.result;
- }
- #ifdef DEBUG
- static void
- mono_backtrace (int limit)
- {
- void *array[limit];
- char **names;
- int i;
- backtrace (array, limit);
- names = backtrace_symbols (array, limit);
- for (i =0; i < limit; ++i) {
- g_print ("\t%s\n", names [i]);
- }
- g_free (names);
- }
- #endif
- #define abi__alignof__(type) G_STRUCT_OFFSET(struct { char c; type x; }, x)
- /*
- * mono_type_size:
- * @t: the type to return the size of
- *
- * Returns: the number of bytes required to hold an instance of this
- * type in memory
- */
- int
- mono_type_size (MonoType *t, int *align)
- {
- if (!t) {
- *align = 1;
- return 0;
- }
- if (t->byref) {
- *align = abi__alignof__(gpointer);
- return sizeof (gpointer);
- }
- switch (t->type){
- case MONO_TYPE_VOID:
- *align = 1;
- return 0;
- case MONO_TYPE_BOOLEAN:
- *align = abi__alignof__(gint8);
- return 1;
- case MONO_TYPE_I1:
- case MONO_TYPE_U1:
- *align = abi__alignof__(gint8);
- return 1;
- case MONO_TYPE_CHAR:
- case MONO_TYPE_I2:
- case MONO_TYPE_U2:
- *align = abi__alignof__(gint16);
- return 2;
- case MONO_TYPE_I4:
- case MONO_TYPE_U4:
- *align = abi__alignof__(gint32);
- return 4;
- case MONO_TYPE_R4:
- *align = abi__alignof__(float);
- return 4;
- case MONO_TYPE_I8:
- case MONO_TYPE_U8:
- *align = abi__alignof__(gint64);
- return 8;
- case MONO_TYPE_R8:
- *align = abi__alignof__(double);
- return 8;
- case MONO_TYPE_I:
- case MONO_TYPE_U:
- *align = abi__alignof__(gpointer);
- return sizeof (gpointer);
- case MONO_TYPE_STRING:
- *align = abi__alignof__(gpointer);
- return sizeof (gpointer);
- case MONO_TYPE_OBJECT:
- *align = abi__alignof__(gpointer);
- return sizeof (gpointer);
- case MONO_TYPE_VALUETYPE: {
- if (t->data.klass->enumtype)
- return mono_type_size (mono_class_enum_basetype (t->data.klass), align);
- else
- return mono_class_value_size (t->data.klass, (guint32*)align);
- }
- case MONO_TYPE_CLASS:
- case MONO_TYPE_SZARRAY:
- case MONO_TYPE_PTR:
- case MONO_TYPE_FNPTR:
- case MONO_TYPE_ARRAY:
- *align = abi__alignof__(gpointer);
- return sizeof (gpointer);
- case MONO_TYPE_TYPEDBYREF:
- return mono_class_value_size (mono_defaults.typed_reference_class, (guint32*)align);
- case MONO_TYPE_GENERICINST: {
- MonoGenericClass *gclass = t->data.generic_class;
- MonoClass *container_class = gclass->container_class;
- // g_assert (!gclass->inst->is_open);
- if (container_class->valuetype) {
- if (container_class->enumtype)
- return mono_type_size (mono_class_enum_basetype (container_class), align);
- else
- return mono_class_value_size (mono_class_from_mono_type (t), (guint32*)align);
- } else {
- *align = abi__alignof__(gpointer);
- return sizeof (gpointer);
- }
- }
- case MONO_TYPE_VAR:
- case MONO_TYPE_MVAR:
- /* FIXME: Martin, this is wrong. */
- *align = abi__alignof__(gpointer);
- return sizeof (gpointer);
- default:
- g_error ("mono_type_size: type 0x%02x unknown", t->type);
- }
- return 0;
- }
- /*
- * mono_type_stack_size:
- * @t: the type to return the size it uses on the stack
- *
- * Returns: the number of bytes required to hold an instance of this
- * type on the runtime stack
- */
- int
- mono_type_stack_size (MonoType *t, int *align)
- {
- return mono_type_stack_size_internal (t, align, FALSE);
- }
- int
- mono_type_stack_size_internal (MonoType *t, int *align, gboolean allow_open)
- {
- int tmp;
- #if SIZEOF_VOID_P == SIZEOF_REGISTER
- int stack_slot_size = sizeof (gpointer);
- int stack_slot_align = abi__alignof__ (gpointer);
- #elif SIZEOF_VOID_P < SIZEOF_REGISTER
- int stack_slot_size = SIZEOF_REGISTER;
- int stack_slot_align = SIZEOF_REGISTER;
- #endif
- g_assert (t != NULL);
- if (!align)
- align = &tmp;
- if (t->byref) {
- *align = stack_slot_align;
- return stack_slot_size;
- }
- switch (t->type){
- case MONO_TYPE_BOOLEAN:
- case MONO_TYPE_CHAR:
- case MONO_TYPE_I1:
- case MONO_TYPE_U1:
- case MONO_TYPE_I2:
- case MONO_TYPE_U2:
- case MONO_TYPE_I4:
- case MONO_TYPE_U4:
- case MONO_TYPE_I:
- case MONO_TYPE_U:
- case MONO_TYPE_STRING:
- case MONO_TYPE_OBJECT:
- case MONO_TYPE_CLASS:
- case MONO_TYPE_SZARRAY:
- case MONO_TYPE_PTR:
- case MONO_TYPE_FNPTR:
- case MONO_TYPE_ARRAY:
- *align = stack_slot_align;
- return stack_slot_size;
- case MONO_TYPE_VAR:
- case MONO_TYPE_MVAR:
- g_assert (allow_open);
- *align = stack_slot_align;
- return stack_slot_size;
- case MONO_TYPE_TYPEDBYREF:
- *align = stack_slot_align;
- return stack_slot_size * 3;
- case MONO_TYPE_R4:
- *align = abi__alignof__(float);
- return sizeof (float);
- case MONO_TYPE_I8:
- case MONO_TYPE_U8:
- *align = abi__alignof__(gint64);
- return sizeof (gint64);
- case MONO_TYPE_R8:
- *align = abi__alignof__(double);
- return sizeof (double);
- case MONO_TYPE_VALUETYPE: {
- guint32 size;
- if (t->data.klass->enumtype)
- return mono_type_stack_size_internal (mono_class_enum_basetype (t->data.klass), align, allow_open);
- else {
- size = mono_class_value_size (t->data.klass, (guint32*)align);
- *align = *align + stack_slot_align - 1;
- *align &= ~(stack_slot_align - 1);
- size += stack_slot_size - 1;
- size &= ~(stack_slot_size - 1);
- return size;
- }
- }
- case MONO_TYPE_GENERICINST: {
- MonoGenericClass *gclass = t->data.generic_class;
- MonoClass *container_class = gclass->container_class;
- if (!allow_open)
- g_assert (!gclass->context.class_inst->is_open);
- if (container_class->valuetype) {
- if (container_class->enumtype)
- return mono_type_stack_size_internal (mono_class_enum_basetype (container_class), align, allow_open);
- else {
- guint32 size = mono_class_value_size (mono_class_from_mono_type (t), (guint32*)align);
- *align = *align + stack_slot_align - 1;
- *align &= ~(stack_slot_align - 1);
- size += stack_slot_size - 1;
- size &= ~(stack_slot_size - 1);
- return size;
- }
- } else {
- *align = stack_slot_align;
- return stack_slot_size;
- }
- }
- default:
- g_error ("type 0x%02x unknown", t->type);
- }
- return 0;
- }
- gboolean
- mono_type_generic_inst_is_valuetype (MonoType *type)
- {
- g_assert (type->type == MONO_TYPE_GENERICINST);
- return type->data.generic_class->container_class->valuetype;
- }
- gboolean
- mono_metadata_generic_class_is_valuetype (MonoGenericClass *gclass)
- {
- return gclass->container_class->valuetype;
- }
- static gboolean
- _mono_metadata_generic_class_equal (const MonoGenericClass *g1, const MonoGenericClass *g2, gboolean signature_only)
- {
- MonoGenericInst *i1 = g1->context.class_inst;
- MonoGenericInst *i2 = g2->context.class_inst;
- if (g1->is_dynamic != g2->is_dynamic)
- return FALSE;
- if (!mono_metadata_class_equal (g1->container_class, g2->container_class, signature_only))
- return FALSE;
- if (!mono_generic_inst_equal_full (i1, i2, signature_only))
- return FALSE;
- return g1->is_tb_open == g2->is_tb_open;
- }
- static gboolean
- _mono_metadata_generic_class_container_equal (const MonoGenericClass *g1, MonoClass *c2, gboolean signature_only)
- {
- MonoGenericInst *i1 = g1->context.class_inst;
- MonoGenericInst *i2 = c2->generic_container->context.class_inst;
- if (!mono_metadata_class_equal (g1->container_class, c2, signature_only))
- return FALSE;
- if (!mono_generic_inst_equal_full (i1, i2, signature_only))
- return FALSE;
- return !g1->is_tb_open;
- }
- guint
- mono_metadata_generic_context_hash (const MonoGenericContext *context)
- {
- /* FIXME: check if this seed is good enough */
- guint hash = 0xc01dfee7;
- if (context->class_inst)
- hash = ((hash << 5) - hash) ^ mono_metadata_generic_inst_hash (context->class_inst);
- if (context->method_inst)
- hash = ((hash << 5) - hash) ^ mono_metadata_generic_inst_hash (context->method_inst);
- return hash;
- }
- gboolean
- mono_metadata_generic_context_equal (const MonoGenericContext *g1, const MonoGenericContext *g2)
- {
- return g1->class_inst == g2->class_inst && g1->method_inst == g2->method_inst;
- }
- /*
- * mono_metadata_str_hash:
- *
- * This should be used instead of g_str_hash for computing hash codes visible
- * outside this module, since g_str_hash () is not guaranteed to be stable
- * (its not the same in eglib for example).
- */
- guint
- mono_metadata_str_hash (gconstpointer v1)
- {
- /* Same as g_str_hash () in glib */
- char *p = (char *) v1;
- guint hash = *p;
- while (*p++) {
- if (*p)
- hash = (hash << 5) - hash + *p;
- }
- return hash;
- }
- /*
- * mono_metadata_type_hash:
- * @t1: a type
- *
- * Computes an hash value for @t1 to be used in GHashTable.
- * The returned hash is guaranteed to be the same across executions.
- */
- guint
- mono_metadata_type_hash (MonoType *t1)
- {
- guint hash = t1->type;
- hash |= t1->byref << 6; /* do not collide with t1->type values */
- switch (t1->type) {
- case MONO_TYPE_VALUETYPE:
- case MONO_TYPE_CLASS:
- case MONO_TYPE_SZARRAY: {
- MonoClass *class = t1->data.klass;
- /*
- * Dynamic classes must not be hashed on their type since it can change
- * during runtime. For example, if we hash a reference type that is
- * later made into a valuetype.
- *
- * This is specially problematic with generic instances since they are
- * inserted in a bunch of hash tables before been finished.
- */
- if (class->image->dynamic)
- return (t1->byref << 6) | mono_metadata_str_hash (class->name);
- return ((hash << 5) - hash) ^ mono_metadata_str_hash (class->name);
- }
- case MONO_TYPE_PTR:
- return ((hash << 5) - hash) ^ mono_metadata_type_hash (t1->data.type);
- case MONO_TYPE_ARRAY:
- return ((hash << 5) - hash) ^ mono_metadata_type_hash (&t1->data.array->eklass->byval_arg);
- case MONO_TYPE_GENERICINST:
- return ((hash << 5) - hash) ^ mono_generic_class_hash (t1->data.generic_class);
- }
- return hash;
- }
- static gboolean
- mono_metadata_generic_param_equal (MonoGenericParam *p1, MonoGenericParam *p2, gboolean signature_only)
- {
- if (p1 == p2)
- return TRUE;
- if (mono_generic_param_num (p1) != mono_generic_param_num (p2))
- return FALSE;
- if (p1->serial != p2->serial)
- return FALSE;
- /*
- * We have to compare the image as well because if we didn't,
- * the generic_inst_cache lookup wouldn't care about the image
- * of generic params, so what could happen is that a generic
- * inst with params from image A is put into the cache, then
- * image B gets that generic inst from the cache, image A is
- * unloaded, so the inst is deleted, but image B still retains
- * a pointer to it.
- *
- * The AOT runtime doesn't set the image when it's decoding
- * types, so we only compare it when the owner is NULL.
- */
- if (mono_generic_param_owner (p1) == mono_generic_param_owner (p2) &&
- (mono_generic_param_owner (p1) || p1->image == p2->image))
- return TRUE;
- /*
- * If `signature_only' is true, we're comparing two (method) signatures.
- * In this case, the owner of two type parameters doesn't need to match.
- */
- return signature_only;
- }
- static gboolean
- mono_metadata_class_equal (MonoClass *c1, MonoClass *c2, gboolean signature_only)
- {
- if (c1 == c2)
- return TRUE;
- if (c1->generic_class && c2->generic_class)
- return _mono_metadata_generic_class_equal (c1->generic_class, c2->generic_class, signature_only);
- if (c1->generic_class && c2->generic_container)
- return _mono_metadata_generic_class_container_equal (c1->generic_class, c2, signature_only);
- if (c1->generic_container && c2->generic_class)
- return _mono_metadata_generic_class_container_equal (c2->generic_class, c1, signature_only);
- if ((c1->byval_arg.type == MONO_TYPE_VAR) && (c2->byval_arg.type == MONO_TYPE_VAR))
- return mono_metadata_generic_param_equal (
- c1->byval_arg.data.generic_param, c2->byval_arg.data.generic_param, signature_only);
- if ((c1->byval_arg.type == MONO_TYPE_MVAR) && (c2->byval_arg.type == MONO_TYPE_MVAR))
- return mono_metadata_generic_param_equal (
- c1->byval_arg.data.generic_param, c2->byval_arg.data.generic_param, signature_only);
- if (signature_only &&
- (c1->byval_arg.type == MONO_TYPE_SZARRAY) && (c2->byval_arg.type == MONO_TYPE_SZARRAY))
- return mono_metadata_class_equal (c1->byval_arg.data.klass, c2->byval_arg.data.klass, signature_only);
- if (signature_only &&
- (c1->byval_arg.type == MONO_TYPE_ARRAY) && (c2->byval_arg.type == MONO_TYPE_ARRAY))
- return do_mono_metadata_type_equal (&c1->byval_arg, &c2->byval_arg, signature_only);
- return FALSE;
- }
- static gboolean
- mono_metadata_fnptr_equal (MonoMethodSignature *s1, MonoMethodSignature *s2, gboolean signature_only)
- {
- gpointer iter1 = 0, iter2 = 0;
- if (s1 == s2)
- return TRUE;
- if (s1->call_convention != s2->call_convention)
- return FALSE;
- if (s1->sentinelpos != s2->sentinelpos)
- return FALSE;
- if (s1->hasthis != s2->hasthis)
- return FALSE;
- if (s1->explicit_this != s2->explicit_this)
- return FALSE;
- if (! do_mono_metadata_type_equal (s1->ret, s2->ret, signature_only))
- return FALSE;
- if (s1->param_count != s2->param_count)
- return FALSE;
- while (TRUE) {
- MonoType *t1 = mono_signature_get_params (s1, &iter1);
- MonoType *t2 = mono_signature_get_params (s2, &iter2);
- if (t1 == NULL || t2 == NULL)
- return (t1 == t2);
- if (! do_mono_metadata_type_equal (t1, t2, signature_only))
- return FALSE;
- }
- }
- /*
- * mono_metadata_type_equal:
- * @t1: a type
- * @t2: another type
- *
- * Determine if @t1 and @t2 represent the same type.
- * Returns: #TRUE if @t1 and @t2 are equal.
- */
- static gboolean
- do_mono_metadata_type_equal (MonoType *t1, MonoType *t2, gboolean signature_only)
- {
- if (t1->type != t2->type || t1->byref != t2->byref)
- return FALSE;
- switch (t1->type) {
- case MONO_TYPE_VOID:
- case MONO_TYPE_BOOLEAN:
- case MONO_TYPE_CHAR:
- case MONO_TYPE_I1:
- case MONO_TYPE_U1:
- case MONO_TYPE_I2:
- case MONO_TYPE_U2:
- case MONO_TYPE_I4:
- case MONO_TYPE_U4:
- case MONO_TYPE_I8:
- case MONO_TYPE_U8:
- case MONO_TYPE_R4:
- case MONO_TYPE_R8:
- case MONO_TYPE_STRING:
- case MONO_TYPE_I:
- case MONO_TYPE_U:
- case MONO_TYPE_OBJECT:
- case MONO_TYPE_TYPEDBYREF:
- return TRUE;
- case MONO_TYPE_VALUETYPE:
- case MONO_TYPE_CLASS:
- case MONO_TYPE_SZARRAY:
- return mono_metadata_class_equal (t1->data.klass, t2->data.klass, signature_only);
- case MONO_TYPE_PTR:
- return do_mono_metadata_type_equal (t1->data.type, t2->data.type, signature_only);
- case MONO_TYPE_ARRAY:
- if (t1->data.array->rank != t2->data.array->rank)
- return FALSE;
- return mono_metadata_class_equal (t1->data.array->eklass, t2->data.array->eklass, signature_only);
- case MONO_TYPE_GENERICINST:
- return _mono_metadata_generic_class_equal (
- t1->data.generic_class, t2->data.generic_class, signature_only);
- case MONO_TYPE_VAR:
- return mono_metadata_generic_param_equal (
- t1->data.generic_param, t2->data.generic_param, signature_only);
- case MONO_TYPE_MVAR:
- return mono_metadata_generic_param_equal (
- t1->data.generic_param, t2->data.generic_param, signature_only);
- case MONO_TYPE_FNPTR:
- return mono_metadata_fnptr_equal (t1->data.method, t2->data.method, signature_only);
- default:
- g_error ("implement type compare for %0x!", t1->type);
- return FALSE;
- }
- return FALSE;
- }
- gboolean
- mono_metadata_type_equal (MonoType *t1, MonoType *t2)
- {
- return do_mono_metadata_type_equal (t1, t2, FALSE);
- }
- /**
- * mono_metadata_type_equal_full:
- * @t1: a type
- * @t2: another type
- * @signature_only: if signature only comparison should be made
- *
- * Determine if @t1 and @t2 are signature compatible if @signature_only is #TRUE, otherwise
- * behaves the same way as mono_metadata_type_equal.
- * The function mono_metadata_type_equal(a, b) is just a shortcut for mono_metadata_type_equal_full(a, b, FALSE).
- * Returns: #TRUE if @t1 and @t2 are equal taking @signature_only into account.
- */
- gboolean
- mono_metadata_type_equal_full (MonoType *t1, MonoType *t2, gboolean signature_only)
- {
- return do_mono_metadata_type_equal (t1, t2, signature_only);
- }
- /**
- * mono_metadata_signature_equal:
- * @sig1: a signature
- * @sig2: another signature
- *
- * Determine if @sig1 and @sig2 represent the same signature, with the
- * same number of arguments and the same types.
- * Returns: #TRUE if @sig1 and @sig2 are equal.
- */
- gboolean
- mono_metadata_signature_equal (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
- {
- int i;
- if (sig1->hasthis != sig2->hasthis || sig1->param_count != sig2->param_count)
- return FALSE;
- if (sig1->generic_param_count != sig2->generic_param_count)
- return FALSE;
- /*
- * We're just comparing the signatures of two methods here:
- *
- * If we have two generic methods `void Foo<U> (U u)' and `void Bar<V> (V v)',
- * U and V are equal here.
- *
- * That's what the `signature_only' argument of do_mono_metadata_type_equal() is for.
- */
- for (i = 0; i < sig1->param_count; i++) {
- MonoType *p1 = sig1->params[i];
- MonoType *p2 = sig2->params[i];
-
- /* if (p1->attrs != p2->attrs)
- return FALSE;
- */
- if (!do_mono_metadata_type_equal (p1, p2, TRUE))
- return FALSE;
- }
- if (!do_mono_metadata_type_equal (sig1->ret, sig2->ret, TRUE))
- return FALSE;
- return TRUE;
- }
- /**
- * mono_metadata_type_dup:
- * @image: image to alloc memory from
- * @original: type to duplicate
- *
- * Returns: copy of type allocated from the image's mempool (or from the heap, if @image is null).
- */
- MonoType *
- mono_metadata_type_dup (MonoImage *image, const MonoType *o)
- {
- MonoType *r = NULL;
- int sizeof_o = MONO_SIZEOF_TYPE;
- if (o->num_mods)
- sizeof_o += o->num_mods * sizeof (MonoCustomMod);
- r = image ? mono_image_alloc0 (image, sizeof_o) : g_malloc (sizeof_o);
- memcpy (r, o, sizeof_o);
- if (o->type == MONO_TYPE_PTR) {
- r->data.type = mono_metadata_type_dup (image, o->data.type);
- } else if (o->type == MONO_TYPE_ARRAY) {
- r->data.array = mono_dup_array_type (image, o->data.array);
- } else if (o->type == MONO_TYPE_FNPTR) {
- /*FIXME the dup'ed signature is leaked mono_metadata_free_type*/
- r->data.method = mono_metadata_signature_deep_dup (image, o->data.method);
- }
- return r;
- }
- guint
- mono_signature_hash (MonoMethodSignature *sig)
- {
- guint i, res = sig->ret->type;
- for (i = 0; i < sig->param_count; i++)
- res = (res << 5) - res + mono_type_hash (sig->params[i]);
- return res;
- }
- /*
- * mono_metadata_encode_value:
- * @value: value to encode
- * @buf: buffer where to write the compressed representation
- * @endbuf: pointer updated to point at the end of the encoded output
- *
- * Encodes the value @value in the compressed representation used
- * in metadata and stores the result in @buf. @buf needs to be big
- * enough to hold the data (4 bytes).
- */
- void
- mono_metadata_encode_value (guint32 value, char *buf, char **endbuf)
- {
- char *p = buf;
-
- if (value < 0x80)
- *p++ = value;
- else if (value < 0x4000) {
- p [0] = 0x80 | (value >> 8);
- p [1] = value & 0xff;
- p += 2;
- } else {
- p [0] = (value >> 24) | 0xc0;
- p [1] = (value >> 16) & 0xff;
- p [2] = (value >> 8) & 0xff;
- p [3] = value & 0xff;
- p += 4;
- }
- if (endbuf)
- *endbuf = p;
- }
- /*
- * mono_metadata_field_info:
- * @meta: the Image the field is defined in
- * @index: the index in the field table representing the field
- * @offset: a pointer to an integer where to store the offset that
- * may have been specified for the field in a FieldLayout table
- * @rva: a pointer to the RVA of the field data in the image that
- * may have been defined in a FieldRVA table
- * @marshal_spec: a pointer to the marshal spec that may have been
- * defined for the field in a FieldMarshal table.
- *
- * Gather info for field @index that may have been defined in the FieldLayout,
- * FieldRVA and FieldMarshal tables.
- * Either of offset, rva and marshal_spec can be NULL if you're not interested
- * in the data.
- */
- void
- mono_metadata_field_info (MonoImage *meta, guint32 index, guint32 *offset, guint32 *rva,
- MonoMarshalSpec **marshal_spec)
- {
- mono_metadata_field_info_full (meta, index, offset, rva, marshal_spec, FALSE);
- }
- void
- mono_metadata_field_info_with_mempool (MonoImage *meta, guint32 index, guint32 *offset, guint32 *rva,
- MonoMarshalSpec **marshal_spec)
- {
- mono_metadata_field_info_full (meta, index, offset, rva, marshal_spec, TRUE);
- }
- static void
- mono_metadata_field_info_full (MonoImage *meta, guint32 index, guint32 *offset, guint32 *rva,
- MonoMarshalSpec **marshal_spec, gboolean alloc_from_image)
- {
- MonoTableInfo *tdef;
- locator_t loc;
- loc.idx = index + 1;
- if (meta->uncompressed_metadata)
- loc.idx = search_ptr_table (meta, MONO_TABLE_FIELD_POINTER, loc.idx);
- if (offset) {
- tdef = &meta->tables [MONO_TABLE_FIELDLAYOUT];
- loc.col_idx = MONO_FIELD_LAYOUT_FIELD;
- loc.t = tdef;
- if (tdef->base && bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator)) {
- *offset = mono_metadata_decode_row_col (tdef, loc.result, MONO_FIELD_LAYOUT_OFFSET);
- } else {
- *offset = (guint32)-1;
- }
- }
- if (rva) {
- tdef = &meta->tables [MONO_TABLE_FIELDRVA];
- loc.col_idx = MONO_FIELD_RVA_FIELD;
- loc.t = tdef;
-
- if (tdef->base && bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator)) {
- /*
- * LAMESPEC: There is no signature, no nothing, just the raw data.
- */
- *rva = mono_metadata_decode_row_col (tdef, loc.result, MONO_FIELD_RVA_RVA);
- } else {
- *rva = 0;
- }
- }
- if (marshal_spec) {
- const char *p;
-
- if ((p = mono_metadata_get_marshal_info (meta, index, TRUE))) {
- *marshal_spec = mono_metadata_parse_marshal_spec_full (alloc_from_image ? meta : NULL, p);
- }
- }
- }
- /*
- * mono_metadata_get_constant_index:
- * @meta: the Image the field is defined in
- * @index: the token that may have a row defined in the constants table
- * @hint: possible position for the row
- *
- * @token must be a FieldDef, ParamDef or PropertyDef token.
- *
- * Returns: the index into the Constants table or 0 if not found.
- */
- guint32
- mono_metadata_get_constant_index (MonoImage *meta, guint32 token, guint32 hint)
- {
- MonoTableInfo *tdef;
- locator_t loc;
- guint32 index = mono_metadata_token_index (token);
- tdef = &meta->tables [MONO_TABLE_CONSTANT];
- index <<= MONO_HASCONSTANT_BITS;
- switch (mono_metadata_token_table (token)) {
- case MONO_TABLE_FIELD:
- index |= MONO_HASCONSTANT_FIEDDEF;
- break;
- case MONO_TABLE_PARAM:
- index |= MONO_HASCONSTANT_PARAM;
- break;
- case MONO_TABLE_PROPERTY:
- index |= MONO_HASCONSTANT_PROPERTY;
- break;
- default:
- g_warning ("Not a valid token for the constant table: 0x%08x", token);
- return 0;
- }
- loc.idx = index;
- loc.col_idx = MONO_CONSTANT_PARENT;
- loc.t = tdef;
- /* FIXME: Index translation */
- if ((hint > 0) && (hint < tdef->rows) && (mono_metadata_decode_row_col (tdef, hint - 1, MONO_CONSTANT_PARENT) == index))
- return hint;
- if (tdef->base && bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator)) {
- return loc.result + 1;
- }
- return 0;
- }
- /*
- * mono_metadata_events_from_typedef:
- * @meta: metadata context
- * @index: 0-based index (in the TypeDef table) describing a type
- *
- * Returns: the 0-based index in the Event table for the events in the
- * type. The last event that belongs to the type (plus 1) is stored
- * in the @end_idx pointer.
- */
- guint32
- mono_metadata_events_from_typedef (MonoImage *meta, guint32 index, guint *end_idx)
- {
- locator_t loc;
- guint32 start, end;
- MonoTableInfo *tdef = &meta->tables [MONO_TABLE_EVENTMAP];
- *end_idx = 0;
-
- if (!tdef->base)
- return 0;
- loc.t = tdef;
- loc.col_idx = MONO_EVENT_MAP_PARENT;
- loc.idx = index + 1;
- if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
- return 0;
-
- start = mono_metadata_decode_row_col (tdef, loc.result, MONO_EVENT_MAP_EVENTLIST);
- if (loc.result + 1 < tdef->rows) {
- end = mono_metadata_decode_row_col (tdef, loc.result + 1, MONO_EVENT_MAP_EVENTLIST) - 1;
- } else {
- end = meta->tables [MONO_TABLE_EVENT].rows;
- }
- *end_idx = end;
- return start - 1;
- }
- /*
- * mono_metadata_methods_from_event:
- * @meta: metadata context
- * @index: 0-based index (in the Event table) describing a event
- *
- * Returns: the 0-based index in the MethodDef table for the methods in the
- * event. The last method that belongs to the event (plus 1) is stored
- * in the @end_idx pointer.
- */
- guint32
- mono_metadata_methods_from_event (MonoImage *meta, guint32 index, guint *end_idx)
- {
- locator_t loc;
- guint start, end;
- guint32 cols [MONO_METHOD_SEMA_SIZE];
- MonoTableInfo *msemt = &meta->tables [MONO_TABLE_METHODSEMANTICS];
- *end_idx = 0;
- if (!msemt->base)
- return 0;
- if (meta->uncompressed_metadata)
- index = search_ptr_table (meta, MONO_TABLE_EVENT_POINTER, index + 1) - 1;
- loc.t = msemt;
- loc.col_idx = MONO_METHOD_SEMA_ASSOCIATION;
- loc.idx = ((index + 1) << MONO_HAS_SEMANTICS_BITS) | MONO_HAS_SEMANTICS_EVENT; /* Method association coded index */
- if (!bsearch (&loc, msemt->base, msemt->rows, msemt->row_size, table_locator))
- return 0;
- start = loc.result;
- /*
- * We may end up in the middle of the rows...
- */
- while (start > 0) {
- if (loc.idx == mono_metadata_decode_row_col (msemt, start - 1, MONO_METHOD_SEMA_ASSOCIATION))
- start--;
- else
- break;
- }
- end = start + 1;
- while (end < msemt->rows) {
- mono_metadata_decode_row (msemt, end, cols, MONO_METHOD_SEMA_SIZE);
- if (cols [MONO_METHOD_SEMA_ASSOCIATION] != loc.idx)
- break;
- ++end;
- }
- *end_idx = end;
- return start;
- }
- /*
- * mono_metadata_properties_from_typedef:
- * @meta: metadata context
- * @index: 0-based index (in the TypeDef table) describing a type
- *
- * Returns: the 0-based index in the Property table for the properties in the
- * type. The last property that belongs to the type (plus 1) is stored
- * in the @end_idx pointer.
- */
- guint32
- mono_metadata_properties_from_typedef (MonoImage *meta, guint32 index, guint *end_idx)
- {
- locator_t loc;
- guint32 start, end;
- MonoTableInfo *tdef = &meta->tables [MONO_TABLE_PROPERTYMAP];
- *end_idx = 0;
-
- if (!tdef->base)
- return 0;
- loc.t = tdef;
- loc.col_idx = MONO_PROPERTY_MAP_PARENT;
- loc.idx = index + 1;
- if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
- return 0;
-
- start = mono_metadata_decode_row_col (tdef, loc.result, MONO_PROPERTY_MAP_PROPERTY_LIST);
- if (loc.result + 1 < tdef->rows) {
- end = mono_metadata_decode_row_col (tdef, loc.result + 1, MONO_PROPERTY_MAP_PROPERTY_LIST) - 1;
- } else {
- end = meta->tables [MONO_TABLE_PROPERTY].rows;
- }
- *end_idx = end;
- return start - 1;
- }
- /*
- * mono_metadata_methods_from_property:
- * @meta: metadata context
- * @index: 0-based index (in the PropertyDef table) describing a property
- *
- * Returns: the 0-based index in the MethodDef table for the methods in the
- * property. The last method that belongs to the property (plus 1) is stored
- * in the @end_idx pointer.
- */
- guint32
- mono_metadata_methods_from_property (MonoImage *meta, guint32 index, guint *end_idx)
- {
- locator_t loc;
- guint start, end;
- guint32 cols [MONO_METHOD_SEMA_SIZE];
- MonoTableInfo *msemt = &meta->tables [MONO_TABLE_METHODSEMANTICS];
- *end_idx = 0;
- if (!msemt->base)
- return 0;
- if (meta->uncompressed_metadata)
- index = search_ptr_table (meta, MONO_TABLE_PROPERTY_POINTER, index + 1) - 1;
- loc.t = msemt;
- loc.col_idx = MONO_METHOD_SEMA_ASSOCIATION;
- loc.idx = ((index + 1) << MONO_HAS_SEMANTICS_BITS) | MONO_HAS_SEMANTICS_PROPERTY; /* Method association coded index */
- if (!bsearch (&loc, msemt->base, msemt->rows, msemt->row_size, table_locator))
- return 0;
- start = loc.result;
- /*
- * We may end up in the middle of the rows...
- */
- while (start > 0) {
- if (loc.idx == mono_metadata_decode_row_col (msemt, start - 1, MONO_METHOD_SEMA_ASSOCIATION))
- start--;
- else
- break;
- }
- end = start + 1;
- while (end < msemt->rows) {
- mono_metadata_decode_row (msemt, end, cols, MONO_METHOD_SEMA_SIZE);
- if (cols [MONO_METHOD_SEMA_ASSOCIATION] != loc.idx)
- break;
- ++end;
- }
- *end_idx = end;
- return start;
- }
- guint32
- mono_metadata_implmap_from_method (MonoImage *meta, guint32 method_idx)
- {
- locator_t loc;
- MonoTableInfo *tdef = &meta->tables [MONO_TABLE_IMPLMAP];
- if (!tdef->base)
- return 0;
- /* No index translation seems to be needed */
- loc.t = tdef;
- loc.col_idx = MONO_IMPLMAP_MEMBER;
- loc.idx = ((method_idx + 1) << MONO_MEMBERFORWD_BITS) | MONO_MEMBERFORWD_METHODDEF;
- if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
- return 0;
- return loc.result + 1;
- }
- /**
- * @image: context where the image is created
- * @type_spec: typespec token
- *
- * Creates a MonoType representing the TypeSpec indexed by the @type_spec
- * token.
- */
- MonoType *
- mono_type_create_from_typespec (MonoImage *image, guint32 type_spec)
- {
- guint32 idx = mono_metadata_token_index (type_spec);
- MonoTableInfo *t;
- guint32 cols [MONO_TYPESPEC_SIZE];
- const char *ptr;
- guint32 len;
- MonoType *type, *type2;
- mono_loader_lock ();
- type = g_hash_table_lookup (image->typespec_cache, GUINT_TO_POINTER (type_spec));
- if (type) {
- mono_loader_unlock ();
- return type;
- }
- t = &image->tables [MONO_TABLE_TYPESPEC];
- mono_metadata_decode_row (t, idx-1, cols, MONO_TYPESPEC_SIZE);
- ptr = mono_metadata_blob_heap (image, cols [MONO_TYPESPEC_SIGNATURE]);
- if (!mono_verifier_verify_typespec_signature (image, cols [MONO_TYPESPEC_SIGNATURE], type_spec, NULL)) {
- mono_loader_unlock ();
- return NULL;
- }
- len = mono_metadata_decode_value (ptr, &ptr);
- type = mono_metadata_parse_type_internal (image, NULL, MONO_PARSE_TYPE, 0, TRUE, ptr, &ptr);
- if (!type) {
- mono_loader_unlock ();
- return NULL;
- }
- type2 = g_hash_table_lookup (image->typespec_cache, GUINT_TO_POINTER (type_spec));
- if (type2) {
- mono_loader_unlock ();
- return type2;
- }
- type2 = mono_metadata_type_dup (image, type);
- g_hash_table_insert (image->typespec_cache, GUINT_TO_POINTER (type_spec), type2);
- mono_metadata_free_type (type);
- mono_loader_unlock ();
- return type2;
- }
- static char*
- mono_image_strndup (MonoImage *image, const char *data, guint len)
- {
- char *res;
- if (!image)
- return g_strndup (data, len);
- res = mono_image_alloc (image, len + 1);
- memcpy (res, data, len);
- res [len] = 0;
- return res;
- }
- MonoMarshalSpec *
- mono_metadata_parse_marshal_spec (MonoImage *image, const char *ptr)
- {
- return mono_metadata_parse_marshal_spec_full (NULL, ptr);
- }
- MonoMarshalSpec *
- mono_metadata_parse_marshal_spec_full (MonoImage *image, const char *ptr)
- {
- MonoMarshalSpec *res;
- int len;
- const char *start = ptr;
- /* fixme: this is incomplete, but I cant find more infos in the specs */
- if (image)
- res = mono_image_alloc0 (image, sizeof (MonoMarshalSpec));
- else
- res = g_new0 (MonoMarshalSpec, 1);
-
- len = mono_metadata_decode_value (ptr, &ptr);
- res->native = *ptr++;
- if (res->native == MONO_NATIVE_LPARRAY) {
- res->data.array_data.param_num = -1;
- res->data.array_data.num_elem = -1;
- res->data.array_data.elem_mult = -1;
- if (ptr - start <= len)
- res->data.array_data.elem_type = *ptr++;
- if (ptr - start <= len)
- res->data.array_data.param_num = mono_metadata_decode_value (ptr, &ptr);
- if (ptr - start <= len)
- res->data.array_data.num_elem = mono_metadata_decode_value (ptr, &ptr);
- if (ptr - start <= len) {
- /*
- * LAMESPEC: Older spec versions say this parameter comes before
- * num_elem. Never spec versions don't talk about elem_mult at
- * all, but csc still emits it, and it is used to distinguish
- * between param_num being 0, and param_num being omitted.
- * So if (param_num == 0) && (num_elem > 0), then
- * elem_mult == 0 -> the array size is num_elem
- * elem_mult == 1 -> the array size is @param_num + num_elem
- */
- res->data.array_data.elem_mult = mono_metadata_decode_value (ptr, &ptr);
- }
- }
- if (res->native == MONO_NATIVE_BYVALTSTR) {
- if (ptr - start <= len)
- res->data.array_data.num_elem = mono_metadata_decode_value (ptr, &ptr);
- }
- if (res->native == MONO_NATIVE_BYVALARRAY) {
- if (ptr - start <= len)
- res->data.array_data.num_elem = mono_metadata_decode_value (ptr, &ptr);
- }
-
- if (res->native == MONO_NATIVE_CUSTOM) {
- /* skip unused type guid */
- len = mono_metadata_decode_value (ptr, &ptr);
- ptr += len;
- /* skip unused native type name */
- len = mono_metadata_decode_value (ptr, &ptr);
- ptr += len;
- /* read custom marshaler type name */
- len = mono_metadata_decode_value (ptr, &ptr);
- res->data.custom_data.custom_name = mono_image_strndup (image, ptr, len);
- ptr += len;
- /* read cookie string */
- len = mono_metadata_decode_value (ptr, &ptr);
- res->data.custom_data.cookie = mono_image_strndup (image, ptr, len);
- }
- if (res->native == MONO_NATIVE_SAFEARRAY) {
- res->data.safearray_data.elem_type = 0;
- res->data.safearray_data.num_elem = 0;
- if (ptr - start <= len)
- res->data.safearray_data.elem_type = *ptr++;
- if (ptr - start <= len)
- res->data.safearray_data.num_elem = *ptr++;
- }
- return res;
- }
- void
- mono_metadata_free_marshal_spec (MonoMarshalSpec *spec)
- {
- if (spec->native == MONO_NATIVE_CUSTOM) {
- g_free (spec->data.custom_data.custom_name);
- g_free (spec->data.custom_data.cookie);
- }
- g_free (spec);
- }
- /**
- * mono_type_to_unmanaged:
- *
- * Returns: A MonoMarshalNative enumeration value (MONO_NATIVE_) value
- * describing the underlying native reprensetation of the type.
- *
- * In addition the value pointed by
- * "conv" will contain the kind of marshalling required for this
- * particular type one of the MONO_MARSHAL_CONV_ enumeration values.
- */
- guint32
- mono_type_to_unmanaged (MonoType *type, MonoMarshalSpec *mspec, gboolean as_field,
- gboolean unicode, MonoMarshalConv *conv)
- {
- MonoMarshalConv dummy_conv;
- int t = type->type;
- if (!conv)
- conv = &dummy_conv;
- *conv = MONO_MARSHAL_CONV_NONE;
- if (type->byref)
- return MONO_NATIVE_UINT;
- handle_enum:
- switch (t) {
- case MONO_TYPE_BOOLEAN:
- if (mspec) {
- switch (mspec->native) {
- case MONO_NATIVE_VARIANTBOOL:
- *conv = MONO_MARSHAL_CONV_BOOL_VARIANTBOOL;
- return MONO_NATIVE_VARIANTBOOL;
- case MONO_NATIVE_BOOLEAN:
- *conv = MONO_MARSHAL_CONV_BOOL_I4;
- return MONO_NATIVE_BOOLEAN;
- case MONO_NATIVE_I1:
- case MONO_NATIVE_U1:
- return mspec->native;
- default:
- g_error ("cant marshal bool to native type %02x", mspec->native);
- }
- }
- *conv = MONO_MARSHAL_CONV_BOOL_I4;
- return MONO_NATIVE_BOOLEAN;
- case MONO_TYPE_CHAR:
- if (mspec) {
- switch (mspec->native) {
- case MONO_NATIVE_U2:
- case MONO_NATIVE_U1:
- return mspec->native;
- default:
- g_error ("cant marshal char to native type %02x", mspec->native);
- }
- }
- return unicode ? MONO_NATIVE_U2 : MONO_NATIVE_U1;
- case MONO_TYPE_I1: return MONO_NATIVE_I1;
- case MONO_TYPE_U1: return MONO_NATIVE_U1;
- case MONO_TYPE_I2: return MONO_NATIVE_I2;
- case MONO_TYPE_U2: return MONO_NATIVE_U2;
- case MONO_TYPE_I4: return MONO_NATIVE_I4;
- case MONO_TYPE_U4: return MONO_NATIVE_U4;
- case MONO_TYPE_I8: return MONO_NATIVE_I8;
- case MONO_TYPE_U8: return MONO_NATIVE_U8;
- case MONO_TYPE_R4: return MONO_NATIVE_R4;
- case MONO_TYPE_R8: return MONO_NATIVE_R8;
- case MONO_TYPE_STRING:
- if (mspec) {
- switch (mspec->native) {
- case MONO_NATIVE_BSTR:
- *conv = MONO_MARSHAL_CONV_STR_BSTR;
- return MONO_NATIVE_BSTR;
- case MONO_NATIVE_LPSTR:
- *conv = MONO_MARSHAL_CONV_STR_LPSTR;
- return MONO_NATIVE_LPSTR;
- case MONO_NATIVE_LPWSTR:
- *conv = MONO_MARSHAL_CONV_STR_LPWSTR;
- return MONO_NATIVE_LPWSTR;
- case MONO_NATIVE_LPTSTR:
- *conv = MONO_MARSHAL_CONV_STR_LPTSTR;
- return MONO_NATIVE_LPTSTR;
- case MONO_NATIVE_ANSIBSTR:
- *conv = MONO_MARSHAL_CONV_STR_ANSIBSTR;
- return MONO_NATIVE_ANSIBSTR;
- case MONO_NATIVE_TBSTR:
- *conv = MONO_MARSHAL_CONV_STR_TBSTR;
- return MONO_NATIVE_TBSTR;
- case MONO_NATIVE_BYVALTSTR:
- if (unicode)
- *conv = MONO_MARSHAL_CONV_STR_BYVALWSTR;
- else
- *conv = MONO_MARSHAL_CONV_STR_BYVALSTR;
- return MONO_NATIVE_BYVALTSTR;
- default:
- 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);
- }
- }
- if (unicode) {
- *conv = MONO_MARSHAL_CONV_STR_LPWSTR;
- return MONO_NATIVE_LPWSTR;
- }
- else {
- *conv = MONO_MARSHAL_CONV_STR_LPSTR;
- return MONO_NATIVE_LPSTR;
- }
- case MONO_TYPE_PTR: return MONO_NATIVE_UINT;
- case MONO_TYPE_VALUETYPE: /*FIXME*/
- if (type->data.klass->enumtype) {
- t = mono_class_enum_basetype (type->data.klass)->type;
- goto handle_enum;
- }
- if (type->data.klass == mono_defaults.handleref_class){
- *conv = MONO_MARSHAL_CONV_HANDLEREF;
- return MONO_NATIVE_INT;
- }
- return MONO_NATIVE_STRUCT;
- case MONO_TYPE_SZARRAY:
- case MONO_TYPE_ARRAY:
- if (mspec) {
- switch (mspec->native) {
- case MONO_NATIVE_BYVALARRAY:
- if ((type->data.klass->element_class == mono_defaults.char_class) && !unicode)
- *conv = MONO_MARSHAL_CONV_ARRAY_BYVALCHARARRAY;
- else
- *conv = MONO_MARSHAL_CONV_ARRAY_BYVALARRAY;
- return MONO_NATIVE_BYVALARRAY;
- case MONO_NATIVE_SAFEARRAY:
- *conv = MONO_MARSHAL_CONV_ARRAY_SAVEARRAY;
- return MONO_NATIVE_SAFEARRAY;
- case MONO_NATIVE_LPARRAY:
- *conv = MONO_MARSHAL_CONV_ARRAY_LPARRAY;
- return MONO_NATIVE_LPARRAY;
- default:
- g_error ("cant marshal array as native type %02x", mspec->native);
- }
- }
- *conv = MONO_MARSHAL_CONV_ARRAY_LPARRAY;
- return MONO_NATIVE_LPARRAY;
- case MONO_TYPE_I: return MONO_NATIVE_INT;
- case MONO_TYPE_U: return MONO_NATIVE_UINT;
- case MONO_TYPE_CLASS:
- case MONO_TYPE_OBJECT: {
- /* FIXME : we need to handle ArrayList and StringBuilder here, probably */
- if (mspec) {
- switch (mspec->native) {
- case MONO_NATIVE_STRUCT:
- return MONO_NATIVE_STRUCT;
- case MONO_NATIVE_CUSTOM:
- return MONO_NATIVE_CUSTOM;
- case MONO_NATIVE_INTERFACE:
- *conv = MONO_MARSHAL_CONV_OBJECT_INTERFACE;
- return MONO_NATIVE_INTERFACE;
- case MONO_NATIVE_IDISPATCH:
- *conv = MONO_MARSHAL_CONV_OBJECT_IDISPATCH;
- return MONO_NATIVE_IDISPATCH;
- case MONO_NATIVE_IUNKNOWN:
- *conv = MONO_MARSHAL_CONV_OBJECT_IUNKNOWN;
- return MONO_NATIVE_IUNKNOWN;
- case MONO_NATIVE_FUNC:
- if (t == MONO_TYPE_CLASS && (type->data.klass == mono_defaults.multicastdelegate_class ||
- type->data.klass == mono_defaults.delegate_class ||
- type->data.klass->parent == mono_defaults.multicastdelegate_class)) {
- *conv = MONO_MARSHAL_CONV_DEL_FTN;
- return MONO_NATIVE_FUNC;
- }
- /* Fall through */
- default:
- g_error ("cant marshal object as native type %02x", mspec->native);
- }
- }
- if (t == MONO_TYPE_CLASS && (type->data.klass == mono_defaults.multicastdelegate_class ||
- type->data.klass == mono_defaults.delegate_class ||
- type->data.klass->parent == mono_defaults.multicastdelegate_class)) {
- *conv = MONO_MARSHAL_CONV_DEL_FTN;
- return MONO_NATIVE_FUNC;
- }
- if (mono_defaults.safehandle_class && type->data.klass == mono_defaults.safehandle_class){
- *conv = MONO_MARSHAL_CONV_SAFEHANDLE;
- return MONO_NATIVE_INT;
- }
- *conv = MONO_MARSHAL_CONV_OBJECT_STRUCT;
- return MONO_NATIVE_STRUCT;
- }
- case MONO_TYPE_FNPTR: return MONO_NATIVE_FUNC;
- case MONO_TYPE_GENERICINST:
- type = &type->data.generic_class->container_class->byval_arg;
- t = type->type;
- goto handle_enum;
- case MONO_TYPE_TYPEDBYREF:
- default:
- g_error ("type 0x%02x not handled in marshal", t);
- }
- return MONO_NATIVE_MAX;
- }
- const char*
- mono_metadata_get_marshal_info (MonoImage *meta, guint32 idx, gboolean is_field)
- {
- locator_t loc;
- MonoTableInfo *tdef = &meta->tables [MONO_TABLE_FIELDMARSHAL];
- if (!tdef->base)
- return NULL;
- loc.t = tdef;
- loc.col_idx = MONO_FIELD_MARSHAL_PARENT;
- loc.idx = ((idx + 1) << MONO_HAS_FIELD_MARSHAL_BITS) | (is_field? MONO_HAS_FIELD_MARSHAL_FIELDSREF: MONO_HAS_FIELD_MARSHAL_PARAMDEF);
- /* FIXME: Index translation */
- if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
- return NULL;
- return mono_metadata_blob_heap (meta, mono_metadata_decode_row_col (tdef, loc.result, MONO_FIELD_MARSHAL_NATIVE_TYPE));
- }
- MonoMethod*
- method_from_method_def_or_ref (MonoImage *m, guint32 tok, MonoGenericContext *context)
- {
- guint32 idx = tok >> MONO_METHODDEFORREF_BITS;
- switch (tok & MONO_METHODDEFORREF_MASK) {
- case MONO_METHODDEFORREF_METHODDEF:
- return mono_get_method_full (m, MONO_TOKEN_METHOD_DEF | idx, NULL, context);
- case MONO_METHODDEFORREF_METHODREF:
- return mono_get_method_full (m, MONO_TOKEN_MEMBER_REF | idx, NULL, context);
- }
- g_assert_not_reached ();
- return NULL;
- }
- /*
- * mono_class_get_overrides_full:
- *
- * Return the method overrides belonging to class @type_token in @overrides, and
- * the number of overrides in @num_overrides.
- *
- * Returns: TRUE on success, FALSE on failure.
- */
- gboolean
- mono_class_get_overrides_full (MonoImage *image, guint32 type_token, MonoMethod ***overrides, gint32 *num_overrides,
- MonoGenericContext *generic_context)
- {
- MonoError error;
- locator_t loc;
- MonoTableInfo *tdef = &image->tables [MONO_TABLE_METHODIMPL];
- guint32 start, end;
- gint32 i, num;
- guint32 cols [MONO_METHODIMPL_SIZE];
- MonoMethod **result;
- gint32 ok = TRUE;
-
- *overrides = NULL;
- if (num_overrides)
- *num_overrides = 0;
- if (!tdef->base)
- return TRUE;
- loc.t = tdef;
- loc.col_idx = MONO_METHODIMPL_CLASS;
- loc.idx = mono_metadata_token_index (type_token);
- if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
- return TRUE;
- start = loc.result;
- end = start + 1;
- /*
- * We may end up in the middle of the rows...
- */
- while (start > 0) {
- if (loc.idx == mono_metadata_decode_row_col (tdef, start - 1, MONO_METHODIMPL_CLASS))
- start--;
- else
- break;
- }
- while (end < tdef->rows) {
- if (loc.idx == mono_metadata_decode_row_col (tdef, end, MONO_METHODIMPL_CLASS))
- end++;
- else
- break;
- }
- num = end - start;
- result = g_new (MonoMethod*, num * 2);
- for (i = 0; i < num; ++i) {
- MonoMethod *method;
- if (!mono_verifier_verify_methodimpl_row (image, start + i, &error)) {
- mono_error_cleanup (&error);
- ok = FALSE;
- break;
- }
- mono_metadata_decode_row (tdef, start + i, cols, MONO_METHODIMPL_SIZE);
- method = method_from_method_def_or_ref (
- image, cols [MONO_METHODIMPL_DECLARATION], generic_context);
- if (method == NULL)
- ok = FALSE;
- result [i * 2] = method;
- method = method_from_method_def_or_ref (
- image, cols [MONO_METHODIMPL_BODY], generic_context);
- if (method == NULL)
- ok = FALSE;
- result [i * 2 + 1] = method;
- }
- *overrides = result;
- if (num_overrides)
- *num_overrides = num;
- return ok;
- }
- /**
- * mono_guid_to_string:
- *
- * Converts a 16 byte Microsoft GUID to the standard string representation.
- */
- char *
- mono_guid_to_string (const guint8 *guid)
- {
- return g_strdup_printf ("%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
- guid[3], guid[2], guid[1], guid[0],
- guid[5], guid[4],
- guid[7], guid[6],
- guid[8], guid[9],
- guid[10], guid[11], guid[12], guid[13], guid[14], guid[15]);
- }
- static gboolean
- get_constraints (MonoImage *image, int owner, MonoClass ***constraints, MonoGenericContainer *container)
- {
- MonoTableInfo *tdef = &image->tables [MONO_TABLE_GENERICPARAMCONSTRAINT];
- guint32 cols [MONO_GENPARCONSTRAINT_SIZE];
- guint32 i, token, found;
- MonoClass *klass, **res;
- GSList *cons = NULL, *tmp;
- MonoGenericContext *context = &container->context;
- *constraints = NULL;
- found = 0;
- for (i = 0; i < tdef->rows; ++i) {
- mono_metadata_decode_row (tdef, i, cols, MONO_GENPARCONSTRAINT_SIZE);
- if (cols [MONO_GENPARCONSTRAINT_GENERICPAR] == owner) {
- token = mono_metadata_token_from_dor (cols [MONO_GENPARCONSTRAINT_CONSTRAINT]);
- klass = mono_class_get_full (image, token, context);
- if (!klass) {
- g_slist_free (cons);
- return FALSE;
- }
- cons = g_slist_append (cons, klass);
- ++found;
- } else {
- /* contiguous list finished */
- if (found)
- break;
- }
- }
- if (!found)
- return TRUE;
- res = mono_image_alloc0 (image, sizeof (MonoClass*) * (found + 1));
- for (i = 0, tmp = cons; i < found; ++i, tmp = tmp->next) {
- res [i] = tmp->data;
- }
- g_slist_free (cons);
- *constraints = res;
- return TRUE;
- }
- /*
- * mono_metadata_get_generic_param_row:
- *
- * @image:
- * @token: TypeOrMethodDef token, owner for GenericParam
- * @owner: coded token, set on return
- *
- * Returns: 1-based row-id in the GenericParam table whose
- * owner is @token. 0 if not found.
- */
- guint32
- mono_metadata_get_generic_param_row (MonoImage *image, guint32 token, guint32 *owner)
- {
- MonoTableInfo *tdef = &image->tables [MONO_TABLE_GENERICPARAM];
- locator_t loc;
- g_assert (owner);
- if (!tdef->base)
- return 0;
- if (mono_metadata_token_table (token) == MONO_TABLE_TYPEDEF)
- *owner = MONO_TYPEORMETHOD_TYPE;
- else if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
- *owner = MONO_TYPEORMETHOD_METHOD;
- else {
- g_error ("wrong token %x to get_generic_param_row", token);
- return 0;
- }
- *owner |= mono_metadata_token_index (token) << MONO_TYPEORMETHOD_BITS;
- loc.idx = *owner;
- loc.col_idx = MONO_GENERICPARAM_OWNER;
- loc.t = tdef;
- if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
- return 0;
- /* Find the first entry by searching backwards */
- while ((loc.result > 0) && (mono_metadata_decode_row_col (tdef, loc.result - 1, MONO_GENERICPARAM_OWNER) == loc.idx))
- loc.result --;
- return loc.result + 1;
- }
- gboolean
- mono_metadata_has_generic_params (MonoImage *image, guint32 token)
- {
- guint32 owner;
- return mono_metadata_get_generic_param_row (image, token, &owner);
- }
- /*
- * Memory is allocated from IMAGE's mempool.
- */
- gboolean
- mono_metadata_load_generic_param_constraints_full (MonoImage *image, guint32 token,
- MonoGenericContainer *container)
- {
- guint32 start_row, i, owner;
- if (! (start_row = mono_metadata_get_generic_param_row (image, token, &owner)))
- return TRUE;
- for (i = 0; i < container->type_argc; i++) {
- if (!get_constraints (image, start_row + i, &mono_generic_container_get_param_info (container, i)->constraints, container))
- return FALSE;
- }
- return TRUE;
- }
- /*
- * mono_metadata_load_generic_param_constraints:
- *
- * @image: metadata context
- * @token: metadata token to load the contraints, can be methodef or typedef.
- * @container: generic container to load into.
- *
- * Load the generic parameter constraints for the newly created generic type or method
- * represented by @token and @container. The @container is the new container which has
- * been returned by a call to mono_metadata_load_generic_params() with this @token.
- * Memory is allocated from IMAGE's mempool.
- */
- void
- mono_metadata_load_generic_param_constraints (MonoImage *image, guint32 token,
- MonoGenericContainer *container)
- {
- mono_metadata_load_generic_param_constraints_full (image, token, container);
- /*FIXME this function can potentially exit with a pending loader error and cause all sort of havok */
- }
- /*
- * mono_metadata_load_generic_params:
- *
- * Load the type parameters from the type or method definition @token.
- *
- * Use this method after parsing a type or method definition to figure out whether it's a generic
- * type / method. When parsing a method definition, @parent_container points to the generic container
- * of the current class, if any.
- *
- * Note: This method does not load the constraints: for typedefs, this has to be done after fully
- * creating the type.
- *
- * Returns: NULL if @token is not a generic type or method definition or the new generic container.
- *
- * LOCKING: Acquires the loader lock
- *
- */
- MonoGenericContainer *
- mono_metadata_load_generic_params (MonoImage *image, guint32 token, MonoGenericContainer *parent_container)
- {
- MonoTableInfo *tdef = &image->tables [MONO_TABLE_GENERICPARAM];
- guint32 cols [MONO_GENERICPARAM_SIZE];
- guint32 i, owner = 0, n;
- MonoGenericContainer *container;
- MonoGenericParamFull *params;
- MonoGenericContext *context;
- if (!(i = mono_metadata_get_generic_param_row (image, token, &owner)))
- return NULL;
- mono_metadata_decode_row (tdef, i - 1, cols, MONO_GENERICPARAM_SIZE);
- params = NULL;
- n = 0;
- container = mono_image_alloc0 (image, sizeof (MonoGenericContainer));
- container->image = image;
- do {
- n++;
- params = g_realloc (params, sizeof (MonoGenericParamFull) * n);
- memset (¶ms [n - 1], 0, sizeof (MonoGenericParamFull));
- params [n - 1].param.owner = container;
- params [n - 1].param.num = cols [MONO_GENERICPARAM_NUMBER];
- params [n - 1].info.token = i | MONO_TOKEN_GENERIC_PARAM;
- params [n - 1].info.flags = cols [MONO_GENERICPARAM_FLAGS];
- params [n - 1].info.name = mono_metadata_string_heap (image, cols [MONO_GENERICPARAM_NAME]);
- if (params [n - 1].param.num != n - 1)
- g_warning ("GenericParam table unsorted or hole in generic param sequence: token %d", i);
- if (++i > tdef->rows)
- break;
- mono_metadata_decode_row (tdef, i - 1, cols, MONO_GENERICPARAM_SIZE);
- } while (cols [MONO_GENERICPARAM_OWNER] == owner);
- container->type_argc = n;
- container->type_params = mono_image_alloc0 (image, sizeof (MonoGenericParamFull) * n);
- memcpy (container->type_params, params, sizeof (MonoGenericParamFull) * n);
- g_free (params);
- container->parent = parent_container;
- if (mono_metadata_token_table (token) == MONO_TABLE_METHOD)
- container->is_method = 1;
- g_assert (container->parent == NULL || container->is_method);
- context = &container->context;
- if (container->is_method) {
- context->class_inst = container->parent ? container->parent->context.class_inst : NULL;
- context->method_inst = mono_get_shared_generic_inst (container);
- } else {
- context->class_inst = mono_get_shared_generic_inst (container);
- }
- return container;
- }
- MonoGenericInst *
- mono_get_shared_generic_inst (MonoGenericContainer *container)
- {
- MonoType **type_argv;
- MonoType *helper;
- MonoGenericInst *nginst;
- int i;
- type_argv = g_new0 (MonoType *, container->type_argc);
- helper = g_new0 (MonoType, container->type_argc);
- for (i = 0; i < container->type_argc; i++) {
- MonoType *t = &helper [i];
- t->type = container->is_method ? MONO_TYPE_MVAR : MONO_TYPE_VAR;
- t->data.generic_param = mono_generic_container_get_param (container, i);
- type_argv [i] = t;
- }
- nginst = mono_metadata_get_generic_inst (container->type_argc, type_argv);
- g_free (type_argv);
- g_free (helper);
- return nginst;
- }
- /**
- * mono_type_is_byref:
- * @type: the MonoType operated on
- *
- * Returns: #TRUE if @type represents a type passed by reference,
- * #FALSE otherwise.
- */
- gboolean
- mono_type_is_byref (MonoType *type)
- {
- return type->byref;
- }
- /**
- * mono_type_get_type:
- * @type: the MonoType operated on
- *
- * Returns: the IL type value for @type. This is one of the MonoTypeEnum
- * enum members like MONO_TYPE_I4 or MONO_TYPE_STRING.
- */
- int
- mono_type_get_type (MonoType *type)
- {
- return type->type;
- }
- /**
- * mono_type_get_signature:
- * @type: the MonoType operated on
- *
- * It is only valid to call this function if @type is a MONO_TYPE_FNPTR.
- *
- * Returns: the MonoMethodSignature pointer that describes the signature
- * of the function pointer @type represents.
- */
- MonoMethodSignature*
- mono_type_get_signature (MonoType *type)
- {
- g_assert (type->type == MONO_TYPE_FNPTR);
- return type->data.method;
- }
- /**
- * mono_type_get_class:
- * @type: the MonoType operated on
- *
- * It is only valid to call this function if @type is a MONO_TYPE_CLASS or a
- * MONO_TYPE_VALUETYPE. For more general functionality, use mono_class_from_mono_type (),
- * instead
- *
- * Returns: the MonoClass pointer that describes the class that @type represents.
- */
- MonoClass*
- mono_type_get_class (MonoType *type)
- {
- /* FIXME: review the runtime users before adding the assert here */
- return type->data.klass;
- }
- /**
- * mono_type_get_array_type:
- * @type: the MonoType operated on
- *
- * It is only valid to call this function if @type is a MONO_TYPE_ARRAY.
- *
- * Returns: a MonoArrayType struct describing the array type that @type
- * represents. The info includes details such as rank, array element type
- * and the sizes and bounds of multidimensional arrays.
- */
- MonoArrayType*
- mono_type_get_array_type (MonoType *type)
- {
- return type->data.array;
- }
- /**
- * mono_type_get_ptr_type:
- * @type: the MonoType operated on
- *
- * It is only valid to call this function if @type is a MONO_TYPE_PTR.
- * instead
- *
- * Returns: the MonoType pointer that describes the type that @type
- * represents a pointer to.
- */
- MonoType*
- mono_type_get_ptr_type (MonoType *type)
- {
- g_assert (type->type == MONO_TYPE_PTR);
- return type->data.type;
- }
- MonoClass*
- mono_type_get_modifiers (MonoType *type, gboolean *is_required, gpointer *iter)
- {
- /* FIXME: implement */
- return NULL;
- }
- /**
- * mono_type_is_struct:
- * @type: the MonoType operated on
- *
- * Returns: #TRUE is @type is a struct, that is a ValueType but not en enum
- * or a basic type like System.Int32. #FALSE otherwise.
- */
- mono_bool
- mono_type_is_struct (MonoType *type)
- {
- return (!type->byref && ((type->type == MONO_TYPE_VALUETYPE &&
- !type->data.klass->enumtype) || (type->type == MONO_TYPE_TYPEDBYREF) ||
- ((type->type == MONO_TYPE_GENERICINST) &&
- mono_metadata_generic_class_is_valuetype (type->data.generic_class) &&
- !type->data.generic_class->container_class->enumtype)));
- }
- /**
- * mono_type_is_void:
- * @type: the MonoType operated on
- *
- * Returns: #TRUE is @type is System.Void. #FALSE otherwise.
- */
- mono_bool
- mono_type_is_void (MonoType *type)
- {
- return (type && (type->type == MONO_TYPE_VOID) && !type->byref);
- }
- /**
- * mono_type_is_pointer:
- * @type: the MonoType operated on
- *
- * Returns: #TRUE is @type is a managed or unmanaged pointer type. #FALSE otherwise.
- */
- mono_bool
- mono_type_is_pointer (MonoType *type)
- {
- return (type && ((type->byref || (type->type == MONO_TYPE_I) || type->type == MONO_TYPE_STRING)
- || (type->type == MONO_TYPE_SZARRAY) || (type->type == MONO_TYPE_CLASS) ||
- (type->type == MONO_TYPE_U) || (type->type == MONO_TYPE_OBJECT) ||
- (type->type == MONO_TYPE_ARRAY) || (type->type == MONO_TYPE_PTR) ||
- (type->type == MONO_TYPE_FNPTR)));
- }
- /**
- * mono_type_is_reference:
- * @type: the MonoType operated on
- *
- * Returns: #TRUE is @type represents an object reference . #FALSE otherwise.
- */
- mono_bool
- mono_type_is_reference (MonoType *type)
- {
- return (type && (((type->type == MONO_TYPE_STRING) ||
- (type->type == MONO_TYPE_SZARRAY) || (type->type == MONO_TYPE_CLASS) ||
- (type->type == MONO_TYPE_OBJECT) || (type->type == MONO_TYPE_ARRAY)) ||
- ((type->type == MONO_TYPE_GENERICINST) &&
- !mono_metadata_generic_class_is_valuetype (type->data.generic_class))));
- }
- /**
- * mono_signature_get_return_type:
- * @sig: the method signature inspected
- *
- * Returns: the return type of the method signature @sig
- */
- MonoType*
- mono_signature_get_return_type (MonoMethodSignature *sig)
- {
- return sig->ret;
- }
- /**
- * mono_signature_get_params:
- * @sig: the method signature inspected
- * #iter: pointer to an iterator
- *
- * Iterates over the parameters for the method signature @sig.
- * A void* pointer must be initualized to #NULL to start the iteration
- * and it's address is passed to this function repeteadly until it returns
- * #NULL.
- *
- * Returns: the next parameter type of the method signature @sig,
- * #NULL when finished.
- */
- MonoType*
- mono_signature_get_params (MonoMethodSignature *sig, gpointer *iter)
- {
- MonoType** type;
- if (!iter)
- return NULL;
- if (!*iter) {
- /* start from the first */
- if (sig->param_count) {
- *iter = &sig->params [0];
- return sig->params [0];
- } else {
- /* no method */
- return NULL;
- }
- }
- type = *iter;
- type++;
- if (type < &sig->params [sig->param_count]) {
- *iter = type;
- return *type;
- }
- return NULL;
- }
- /**
- * mono_signature_get_param_count:
- * @sig: the method signature inspected
- *
- * Returns: the number of parameters in the method signature @sig.
- */
- guint32
- mono_signature_get_param_count (MonoMethodSignature *sig)
- {
- return sig->param_count;
- }
- /**
- * mono_signature_get_call_conv:
- * @sig: the method signature inspected
- *
- * Returns: the call convention of the method signature @sig.
- */
- guint32
- mono_signature_get_call_conv (MonoMethodSignature *sig)
- {
- return sig->call_convention;
- }
- /**
- * mono_signature_vararg_start:
- * @sig: the method signature inspected
- *
- * Returns: the number of the first vararg parameter in the
- * method signature @sig. -1 if this is not a vararg signature.
- */
- int
- mono_signature_vararg_start (MonoMethodSignature *sig)
- {
- return sig->sentinelpos;
- }
- /**
- * mono_signature_is_instance:
- * @sig: the method signature inspected
- *
- * Returns: #TRUE if this the method signature @sig has an implicit
- * first instance argument. #FALSE otherwise.
- */
- gboolean
- mono_signature_is_instance (MonoMethodSignature *sig)
- {
- return sig->hasthis;
- }
- /**
- * mono_signature_explicit_this:
- * @sig: the method signature inspected
- *
- * Returns: #TRUE if this the method signature @sig has an explicit
- * instance argument. #FALSE otherwise.
- */
- gboolean
- mono_signature_explicit_this (MonoMethodSignature *sig)
- {
- return sig->explicit_this;
- }
- /* for use with allocated memory blocks (assumes alignment is to 8 bytes) */
- guint
- mono_aligned_addr_hash (gconstpointer ptr)
- {
- return GPOINTER_TO_UINT (ptr) >> 3;
- }
- /*
- * If @field belongs to an inflated generic class, return the corresponding field of the
- * generic type definition class.
- */
- MonoClassField*
- mono_metadata_get_corresponding_field_from_generic_type_definition (MonoClassField *field)
- {
- MonoClass *gtd;
- int offset;
- if (!field->parent->generic_class)
- return field;
- gtd = field->parent->generic_class->container_class;
- offset = field - field->parent->fields;
- return gtd->fields + offset;
- }
- /*
- * If @event belongs to an inflated generic class, return the corresponding event of the
- * generic type definition class.
- */
- MonoEvent*
- mono_metadata_get_corresponding_event_from_generic_type_definition (MonoEvent *event)
- {
- MonoClass *gtd;
- int offset;
- if (!event->parent->generic_class)
- return event;
- gtd = event->parent->generic_class->container_class;
- offset = event - event->parent->ext->events;
- return gtd->ext->events + offset;
- }
- /*
- * If @property belongs to an inflated generic class, return the corresponding property of the
- * generic type definition class.
- */
- MonoProperty*
- mono_metadata_get_corresponding_property_from_generic_type_definition (MonoProperty *property)
- {
- MonoClass *gtd;
- int offset;
- if (!property->parent->generic_class)
- return property;
- gtd = property->parent->generic_class->container_class;
- offset = property - property->parent->ext->properties;
- return gtd->ext->properties + offset;
- }