/* * 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 #include #include #include #include #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 #include /* 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 { class Bar {} } class Test : Foo.Bar {} When Foo 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) { MonoMethod *m = method->declaring; 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); /* * Dynamic assemblies have no references, so the images they depend on can be unloaded before them. */ if (m->klass->image->dynamic) collect_signature_images (mono_method_signature (m), 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); } } } void mono_metadata_clean_for_image (MonoImage *image) { CleanForImageUserData ginst_data, gclass_data; GSList *l, *set_list; //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 (); } 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 (!mono_binary_search (&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 (!mono_binary_search (&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 (!mono_binary_search (&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. * Returns 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 (!mono_binary_search (&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 (!mono_binary_search (&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 (!mono_binary_search (&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 (!mono_binary_search (&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)' and `void Bar (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 && mono_binary_search (&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 && mono_binary_search (&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 && mono_binary_search (&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 (!mono_binary_search (&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 (!mono_binary_search (&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 (!mono_binary_search (&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 (!mono_binary_search (&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 (!mono_binary_search (&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 (!mono_binary_search (&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 (!mono_binary_search (&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 (!mono_binary_search (&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_param_is_out * @sig: the method signature inspected * @param_num: the 0-based index of the inspected parameter * * Returns: #TRUE if the parameter is an out parameter, #FALSE * otherwise. */ mono_bool mono_signature_param_is_out (MonoMethodSignature *sig, int param_num) { g_assert (param_num >= 0 && param_num < sig->param_count); return (sig->params [param_num]->attrs & PARAM_ATTRIBUTE_OUT) != 0; } /** * 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; }