*/
#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
#include <glib.h>
#include "metadata.h"
+#include "tabledefs.h"
+#include "mono-endian.h"
+#include "cil-coff.h"
+#include "tokentype.h"
+#include "private.h"
+#include "class.h"
+
+static void do_mono_metadata_parse_type (MonoType *type, MonoImage *m, const char *ptr, const char **rptr);
+
+/*
+ * Encoding of the "description" argument:
+ *
+ * identifier [CODE ARG]
+ *
+ * If CODE is ':', then a lookup on table ARG is performed
+ * If CODE is '=', then a lookup in the aliased-table ARG is performed
+ * If CODE is '#', then this encodes a flag, ARG is the flag name.
+ *
+ * Aliased table for example is `CustomAttributeType' which depending on the
+ * information might refer to different tables.
+ */
+
+static MonoMetaTable AssemblySchema [] = {
+ { 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, NULL }
+};
+
+static MonoMetaTable AssemblyOSSchema [] = {
+ { MONO_MT_UINT32, "OSPlatformID" },
+ { MONO_MT_UINT32, "OSMajor" },
+ { MONO_MT_UINT32, "OSMinor" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable AssemblyProcessorSchema [] = {
+ { MONO_MT_UINT32, "Processor" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable AssemblyRefSchema [] = {
+ { 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, NULL }
+};
+
+static MonoMetaTable AssemblyRefOSSchema [] = {
+ { MONO_MT_UINT32, "OSPlatformID" },
+ { MONO_MT_UINT32, "OSMajorVersion" },
+ { MONO_MT_UINT32, "OSMinorVersion" },
+ { MONO_MT_TABLE_IDX, "AssemblyRef:AssemblyRef" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable AssemblyRefProcessorSchema [] = {
+ { MONO_MT_UINT32, "Processor" },
+ { MONO_MT_TABLE_IDX, "AssemblyRef:AssemblyRef" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable ClassLayoutSchema [] = {
+ { MONO_MT_UINT16, "PackingSize" },
+ { MONO_MT_UINT32, "ClassSize" },
+ { MONO_MT_TABLE_IDX, "Parent:TypeDef" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable ConstantSchema [] = {
+ { MONO_MT_UINT8, "Type" },
+ { MONO_MT_UINT8, "PaddingZero" },
+ { MONO_MT_CONST_IDX, "Parent" },
+ { MONO_MT_BLOB_IDX, "Value" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable CustomAttributeSchema [] = {
+ { MONO_MT_HASCAT_IDX, "Parent" },
+ { MONO_MT_CAT_IDX, "Type" },
+ { MONO_MT_BLOB_IDX, "Value" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable DeclSecuritySchema [] = {
+ { MONO_MT_UINT16, "Action" },
+ { MONO_MT_HASDEC_IDX, "Parent" },
+ { MONO_MT_BLOB_IDX, "PermissionSet" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable EventMapSchema [] = {
+ { MONO_MT_TABLE_IDX, "Parent:TypeDef" },
+ { MONO_MT_TABLE_IDX, "EventList:Event" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable EventSchema [] = {
+ { MONO_MT_UINT16, "EventFlags#EventAttribute" },
+ { MONO_MT_STRING_IDX, "Name" },
+ { MONO_MT_TABLE_IDX, "EventType" }, /* TypeDef or TypeRef */
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable ExportedTypeSchema [] = {
+ { 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, NULL }
+};
+
+static MonoMetaTable FieldSchema [] = {
+ { MONO_MT_UINT16, "Flags" },
+ { MONO_MT_STRING_IDX, "Name" },
+ { MONO_MT_BLOB_IDX, "Signature" },
+ { MONO_MT_END, NULL }
+};
+static MonoMetaTable FieldLayoutSchema [] = {
+ { MONO_MT_UINT32, "Offset" },
+ { MONO_MT_TABLE_IDX, "Field:Field" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable FieldMarshalSchema [] = {
+ { MONO_MT_HFM_IDX, "Parent" },
+ { MONO_MT_BLOB_IDX, "NativeType" },
+ { MONO_MT_END, NULL }
+};
+static MonoMetaTable FieldRVASchema [] = {
+ { MONO_MT_UINT32, "RVA" },
+ { MONO_MT_TABLE_IDX, "Field:Field" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable FileSchema [] = {
+ { MONO_MT_UINT32, "Flags" },
+ { MONO_MT_STRING_IDX, "Name" },
+ { MONO_MT_BLOB_IDX, "Value" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable ImplMapSchema [] = {
+ { MONO_MT_UINT16, "MappingFlag" },
+ { MONO_MT_MF_IDX, "MemberForwarded" },
+ { MONO_MT_STRING_IDX, "ImportName" },
+ { MONO_MT_TABLE_IDX, "ImportScope:ModuleRef" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable InterfaceImplSchema [] = {
+ { MONO_MT_TABLE_IDX, "Class:TypeDef" },
+ { MONO_MT_TDOR_IDX, "Interface=TypeDefOrRef" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable ManifestResourceSchema [] = {
+ { MONO_MT_UINT32, "Offset" },
+ { MONO_MT_UINT32, "Flags" },
+ { MONO_MT_STRING_IDX, "Name" },
+ { MONO_MT_IMPL_IDX, "Implementation" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable MemberRefSchema [] = {
+ { MONO_MT_MRP_IDX, "Class" },
+ { MONO_MT_STRING_IDX, "Name" },
+ { MONO_MT_BLOB_IDX, "Signature" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable MethodSchema [] = {
+ { 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, NULL }
+};
+
+static MonoMetaTable MethodImplSchema [] = {
+ { MONO_MT_TABLE_IDX, "Class:TypeDef" },
+ { MONO_MT_MDOR_IDX, "MethodBody" },
+ { MONO_MT_MDOR_IDX, "MethodDeclaration" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable MethodSemanticsSchema [] = {
+ { MONO_MT_UINT16, "MethodSemantic" },
+ { MONO_MT_TABLE_IDX, "Method:Method" },
+ { MONO_MT_HS_IDX, "Association" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable ModuleSchema [] = {
+ { 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, NULL }
+};
+
+static MonoMetaTable ModuleRefSchema [] = {
+ { MONO_MT_STRING_IDX, "Name" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable NestedClassSchema [] = {
+ { MONO_MT_TABLE_IDX, "NestedClass:TypeDef" },
+ { MONO_MT_TABLE_IDX, "EnclosingClass:TypeDef" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable ParamSchema [] = {
+ { MONO_MT_UINT16, "Flags" },
+ { MONO_MT_UINT16, "Sequence" },
+ { MONO_MT_STRING_IDX, "Name" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable PropertySchema [] = {
+ { MONO_MT_UINT16, "Flags" },
+ { MONO_MT_STRING_IDX, "Name" },
+ { MONO_MT_BLOB_IDX, "Type" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable PropertyMapSchema [] = {
+ { MONO_MT_TABLE_IDX, "Parent:TypeDef" },
+ { MONO_MT_TABLE_IDX, "PropertyList:Property" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable StandaloneSigSchema [] = {
+ { MONO_MT_BLOB_IDX, "Signature" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable TypeDefSchema [] = {
+ { 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, NULL }
+};
+
+static MonoMetaTable TypeRefSchema [] = {
+ { MONO_MT_RS_IDX, "ResolutionScope=ResolutionScope" },
+ { MONO_MT_STRING_IDX, "Name" },
+ { MONO_MT_STRING_IDX, "Namespace" },
+ { MONO_MT_END, NULL }
+};
+
+static MonoMetaTable TypeSpecSchema [] = {
+ { MONO_MT_BLOB_IDX, "Signature" },
+ { MONO_MT_END, NULL }
+};
+
+static struct {
+ MonoMetaTable *table;
+ const char *name;
+} tables [] = {
+ /* 0 */ { ModuleSchema, "Module" },
+ /* 1 */ { TypeRefSchema, "TypeRef" },
+ /* 2 */ { TypeDefSchema, "TypeDef" },
+ /* 3 */ { NULL, NULL },
+ /* 4 */ { FieldSchema, "Field" },
+ /* 5 */ { NULL, NULL },
+ /* 6 */ { MethodSchema, "Method" },
+ /* 7 */ { NULL, NULL },
+ /* 8 */ { ParamSchema, "Param" },
+ /* 9 */ { InterfaceImplSchema, "InterfaceImpl" },
+ /* A */ { MemberRefSchema, "MemberRef" },
+ /* B */ { ConstantSchema, "Constant" },
+ /* C */ { CustomAttributeSchema, "CustomAttribute" },
+ /* D */ { FieldMarshalSchema, "FieldMarshal" },
+ /* E */ { DeclSecuritySchema, "DeclSecurity" },
+ /* F */ { ClassLayoutSchema, "ClassLayout" },
+ /* 10 */ { FieldLayoutSchema, "FieldLayout" },
+ /* 11 */ { StandaloneSigSchema, "StandaloneSig" },
+ /* 12 */ { EventMapSchema, "EventMap" },
+ /* 13 */ { NULL, NULL },
+ /* 14 */ { EventSchema, "Event" },
+ /* 15 */ { PropertyMapSchema, "PropertyMap" },
+ /* 16 */ { NULL, NULL },
+ /* 17 */ { PropertySchema, "PropertyTable" },
+ /* 18 */ { MethodSemanticsSchema, "MethodSemantics" },
+ /* 19 */ { MethodImplSchema, "MethodImpl" },
+ /* 1A */ { ModuleRefSchema, "ModuleRef" },
+ /* 1B */ { TypeSpecSchema, "TypeSpec" },
+ /* 1C */ { ImplMapSchema, "ImplMap" },
+ /* 1D */ { FieldRVASchema, "FieldRVA" },
+ /* 1E */ { NULL, NULL },
+ /* 1F */ { NULL, NULL },
+ /* 20 */ { AssemblySchema, "Assembly" },
+ /* 21 */ { AssemblyProcessorSchema, "AssemblyProcessor" },
+ /* 22 */ { AssemblyOSSchema, "AssemblyOS" },
+ /* 23 */ { AssemblyRefSchema, "AssemblyRef" },
+ /* 24 */ { AssemblyRefProcessorSchema, "AssemblyRefProcessor" },
+ /* 25 */ { AssemblyRefOSSchema, "AssemblyRefOS" },
+ /* 26 */ { FileSchema, "File" },
+ /* 27 */ { ExportedTypeSchema, "ExportedType" },
+ /* 28 */ { ManifestResourceSchema, "ManifestResource" },
+ /* 29 */ { NestedClassSchema, "NestedClass" },
+ /* 2A */ { NULL, NULL },
+ /* 2B */ { NULL, NULL },
+};
+
+/**
+ * mono_meta_table_name:
+ * @table: table index
+ *
+ * Returns the name for the @table index
+ */
+const char *
+mono_meta_table_name (int table)
+{
+ if ((table < 0) || (table > 0x29))
+ return "";
+
+ return tables [table].name;
+}
+
+/* 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.
+ */
+int
+mono_metadata_compute_size (MonoImage *meta, int tableindex, guint32 *result_bitfield)
+{
+ guint32 bitfield = 0;
+ int size = 0, field_size;
+ int i, n, code;
+ int shift = 0;
+ MonoMetaTable *table = tables [tableindex].table;
+
+ for (i = 0; (code = table [i].code) != 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_ASSEMBLYPROCESSOR:
+ 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:
+ g_assert (i == 2);
+ field_size = MAX (idx_size (MONO_TABLE_TYPEDEF), idx_size(MONO_TABLE_TYPEREF));
+ field_size = MAX (field_size, idx_size(MONO_TABLE_TYPESPEC));
+ break;
+ case MONO_TABLE_EXPORTEDTYPE:
+ g_assert (i == 1);
+ field_size = idx_size (MONO_TABLE_TYPEDEF); 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_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_NESTEDCLASS:
+ g_assert (i == 0 || i == 1);
+ field_size = idx_size (MONO_TABLE_TYPEDEF); 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_TYPEDEF:
+ g_assert (i == 4 || i == 5);
+ field_size = i == 4 ? idx_size (MONO_TABLE_FIELD):
+ idx_size(MONO_TABLE_METHOD);
+ break;
+ default:
+ g_assert_not_reached ();
+ }
+ if (field_size != idx_size (tableindex))
+ g_warning ("size changed (%d to %d)", idx_size (tableindex), field_size);
+
+ 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);
+ n = MAX (n, meta->tables [MONO_TABLE_MEMBERREF].rows);
+
+ /* 3 bits to encode */
+ field_size = rtsize (n, 16 - 3);
+ break;
+
+ case MONO_MT_MDOR_IDX:
+
+ /*
+ * MethodDefOrRef: MethodDef, MemberRef
+ */
+ case MONO_MT_HS_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;
+
+ /*
+ * 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 < 64; i++){
+ if (meta->tables [i].rows == 0)
+ continue;
+
+ meta->tables [i].row_size = mono_metadata_compute_size (
+ meta, i, &meta->tables [i].size_bitfield);
+ meta->tables [i].base = base;
+ base += meta->tables [i].rows * meta->tables [i].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, "");
+
+ 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_get_table:
+ * @table: table to retrieve
+ *
+ * Returns the MonoMetaTable structure for table @table
+ */
+MonoMetaTable *
+mono_metadata_get_table (MonoMetaTableEnum table)
+{
+ int x = (int) table;
+
+ g_return_val_if_fail ((x > 0) && (x <= MONO_TABLE_LAST), NULL);
+
+ return tables [table].table;
+}
+
+/**
+ * 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_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_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_return_val_if_fail (index < meta->heap_blob.size, "");
+ 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 char *
+dword_align (const char *ptr)
+{
+ return (const char *) (((guint32) (ptr + 3)) & ~3);
+}
+
+/**
+ * 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 (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 = 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 (MonoTableInfo *t, int idx, guint col)
+{
+ guint32 bitfield = t->size_bitfield;
+ int i;
+ register const char *data = t->base + idx * t->row_size;
+ register int n;
+
+ g_assert (col < mono_metadata_table_count (bitfield));
+
+ 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 = 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 = ptr;
+
+ return len;
+}
+
+/*
+ * 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, &ptr);
+ return TRUE;
+ }
+ return FALSE;
+}
+
+/*
+ * mono_metadata_parse_array:
+ * @m: a metadata context.
+ * @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.
+ */
+MonoArrayType *
+mono_metadata_parse_array (MonoImage *m, const char *ptr, const char **rptr)
+{
+ int i;
+ MonoArrayType *array = g_new0 (MonoArrayType, 1);
+
+ array->type = mono_metadata_parse_type (m, MONO_PARSE_TYPE, 0, ptr, &ptr);
+ array->rank = mono_metadata_decode_value (ptr, &ptr);
+
+ array->numsizes = mono_metadata_decode_value (ptr, &ptr);
+ if (array->numsizes)
+ array->sizes = g_new0 (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 = g_new0 (int, array->numlobounds);
+ for (i = 0; i < array->numlobounds; ++i)
+ array->lobounds [i] = mono_metadata_decode_value (ptr, &ptr);
+
+ if (rptr)
+ *rptr = ptr;
+ return array;
+}
+
+/*
+ * mono_metadata_free_array:
+ * @array: array description
+ *
+ * Frees the array description returned from mono_metadata_parse_array().
+ */
+void
+mono_metadata_free_array (MonoArrayType *array)
+{
+ mono_metadata_free_type (array->type);
+ 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 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_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},
+ {{NULL}, 0, MONO_TYPE_OBJECT, 0, 0, 0},
+ {{NULL}, 0, MONO_TYPE_OBJECT, 0, 1, 0}
+};
+
+#define NBUILTIN_TYPES() (sizeof (builtin_types) / sizeof (builtin_types [0]))
+
+static GHashTable *type_cache = NULL;
+
+/*
+ * 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;
+ 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;
+}
+
+/*
+ * 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
+ *
+ * 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.
+ *
+ * Returns: a #MonoType structure representing the decoded type.
+ */
+MonoType*
+mono_metadata_parse_type (MonoImage *m, MonoParseTypeMode mode, short opt_attrs, const char *ptr, const char **rptr)
+{
+ MonoType *type, *cached;
+
+ if (!type_cache) {
+ 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, &builtin_types [i], &builtin_types [i]);
+ }
+
+ switch (mode) {
+ case MONO_PARSE_MOD_TYPE:
+ case MONO_PARSE_PARAM:
+ case MONO_PARSE_RET:
+ case MONO_PARSE_FIELD: {
+ /* count the modifiers */
+ const char *tmp_ptr = ptr;
+ int count = 0;
+ while (mono_metadata_parse_custom_mod (m, NULL, tmp_ptr, &tmp_ptr))
+ count++;
+ if (count) {
+ type = g_malloc0 (sizeof (MonoType) + (count - MONO_ZERO_LEN_ARRAY) * sizeof (MonoCustomMod));
+ type->num_mods = count;
+ if (count > 64)
+ g_warning ("got more than 64 modifiers in type");
+ /* save them this time */
+ count = 0;
+ while (mono_metadata_parse_custom_mod (m, &(type->modifiers [count]), ptr, &ptr))
+ count++;
+ break;
+ } /* fall through */
+ }
+ case MONO_PARSE_LOCAL:
+ case MONO_PARSE_TYPE:
+ /*
+ * Later we can avoid doing this allocation.
+ */
+ type = g_new0 (MonoType, 1);
+ break;
+ default:
+ g_assert_not_reached ();
+ }
+
+ type->attrs = opt_attrs;
+ if (mode == MONO_PARSE_LOCAL) {
+ /*
+ * check for pinned flag
+ */
+ if (*ptr == MONO_TYPE_PINNED) {
+ type->pinned = 1;
+ ++ptr;
+ }
+ }
+
+ switch (*ptr) {
+ case MONO_TYPE_BYREF:
+ if (mode == MONO_PARSE_FIELD)
+ g_warning ("A field type cannot be byref");
+ type->byref = 1;
+ ptr++;
+ /* follow through */
+ default:
+ /*if (*ptr == MONO_TYPE_VOID && mode != MONO_PARSE_RET)
+ g_error ("void not allowed in param");*/
+ do_mono_metadata_parse_type (type, m, ptr, &ptr);
+ break;
+ }
+ if (rptr)
+ *rptr = ptr;
+ if (mode != MONO_PARSE_PARAM && !type->num_mods && (cached = g_hash_table_lookup (type_cache, type))) {
+ mono_metadata_free_type (type);
+ return cached;
+ } else {
+ return type;
+ }
+}
+
+/*
+ * mono_metadata_parse_method_signature:
+ * @m: metadata context
+ * @def: use #TRUE when parsing MethodDef, #FALSE with MethodRef 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.
+ *
+ * Returns: a MonoMethodSignature describing the signature.
+ */
+MonoMethodSignature *
+mono_metadata_parse_method_signature (MonoImage *m, int def, const char *ptr, const char **rptr)
+{
+ MonoMethodSignature *method;
+ int i;
+ guint32 hasthis = 0, explicit_this = 0, call_convention, param_count;
+
+ if (*ptr & 0x20)
+ hasthis = 1;
+ if (*ptr & 0x40)
+ explicit_this = 1;
+ call_convention = *ptr & 0x0F;
+ ptr++;
+ param_count = mono_metadata_decode_value (ptr, &ptr);
+
+ method = g_malloc0 (sizeof (MonoMethodSignature) + (param_count - MONO_ZERO_LEN_ARRAY) * sizeof (MonoType*));
+ method->param_count = param_count;
+ method->hasthis = hasthis;
+ method->explicit_this = explicit_this;
+ method->call_convention = call_convention;
+ method->ret = mono_metadata_parse_type (m, MONO_PARSE_RET, 0, ptr, &ptr);
+
+ if (method->param_count) {
+ method->sentinelpos = -1;
+
+ for (i = 0; i < method->param_count; ++i) {
+ if (*ptr == MONO_TYPE_SENTINEL) {
+ if (method->call_convention != MONO_CALL_VARARG || def)
+ g_error ("found sentinel for methoddef or no vararg method");
+ method->sentinelpos = i;
+ ptr++;
+ }
+ method->params [i] = mono_metadata_parse_type (m, MONO_PARSE_PARAM, 0, ptr, &ptr);
+ }
+ }
+
+ if (rptr)
+ *rptr = ptr;
+ /*
+ * Add signature to a cache and increase ref count...
+ */
+ return method;
+}
+
+/*
+ * mono_metadata_free_method_signature:
+ * @sig: signature to destroy
+ *
+ * Free the memory allocated in the signature @sig.
+ */
+void
+mono_metadata_free_method_signature (MonoMethodSignature *sig)
+{
+ int i;
+ mono_metadata_free_type (sig->ret);
+ for (i = 0; i < sig->param_count; ++i)
+ mono_metadata_free_type (sig->params [i]);
+
+ g_free (sig);
+}
+
+/*
+ * do_mono_metadata_parse_type:
+ * @type: MonoType to be filled in with the return value
+ * @
+ * 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)
+ */
+static void
+do_mono_metadata_parse_type (MonoType *type, MonoImage *m, const char *ptr, const char **rptr)
+{
+ 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;
+ token = mono_metadata_parse_typedef_or_ref (m, ptr, &ptr);
+ type->data.klass = mono_class_get (m, token);
+ break;
+ }
+ case MONO_TYPE_SZARRAY:
+ case MONO_TYPE_PTR:
+ type->data.type = mono_metadata_parse_type (m, MONO_PARSE_MOD_TYPE, 0, ptr, &ptr);
+ break;
+ case MONO_TYPE_FNPTR:
+ type->data.method = mono_metadata_parse_method_signature (m, 0, ptr, &ptr);
+ break;
+ case MONO_TYPE_ARRAY:
+ type->data.array = mono_metadata_parse_array (m, ptr, &ptr);
+ break;
+ default:
+ g_error ("type 0x%02x not handled in mono_metadata_parse_type", type->type);
+ }
+
+ if (rptr)
+ *rptr = ptr;
+}
+
+/*
+ * mono_metadata_free_type:
+ * @type: type to free
+ *
+ * Free the memory allocated for type @type.
+ */
+void
+mono_metadata_free_type (MonoType *type)
+{
+ if (type >= builtin_types && type < builtin_types + NBUILTIN_TYPES ())
+ return;
+ switch (type->type){
+ case MONO_TYPE_SZARRAY:
+ 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
+
+/**
+ * @mh: The Method header
+ * @ptr: Points to the beginning of the Section Data (25.3)
+ */
+static void
+parse_section_data (MonoMethodHeader *mh, const unsigned char *ptr)
+{
+ unsigned char sect_data_flags;
+ const unsigned char *sptr;
+ int is_fat;
+ guint32 sect_data_len;
+
+ while (1) {
+ /* align on 32-bit boundary */
+ /* FIXME: not 64-bit clean code */
+ 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;
+ mh->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 */
+ mh->clauses = g_new0 (MonoExceptionClause, mh->num_clauses);
+ for (i = 0; i < mh->num_clauses; ++i) {
+ MonoExceptionClause *ec = &mh->clauses [i];
+
+ if (is_fat) {
+ /* we could memcpy and byteswap */
+ ec->flags = read32 (p);
+ p += 4;
+ ec->try_offset = read32 (p);
+ p += 4;
+ ec->try_len = read32 (p);
+ p += 4;
+ ec->handler_offset = read32 (p);
+ p += 4;
+ ec->handler_len = read32 (p);
+ p += 4;
+ ec->token_or_filter = read32 (p);
+ p += 4;
+ } else {
+ ec->flags = read16 (p);
+ p += 2;
+ ec->try_offset = read16 (p);
+ p += 2;
+ ec->try_len = *p;
+ ++p;
+ ec->handler_offset = read16 (p);
+ p += 2;
+ ec->handler_len = *p;
+ ++p;
+ ec->token_or_filter = read32 (p);
+ p += 4;
+ }
+ /* 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;
+ }
+}
+
+/*
+ * mono_metadata_parse_mh:
+ * @m: metadata 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.
+ *
+ * Returns: a MonoMethodHeader.
+ */
+MonoMethodHeader *
+mono_metadata_parse_mh (MonoImage *m, 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;
+ int hsize;
+
+ g_return_val_if_fail (ptr != NULL, NULL);
+
+ switch (format){
+ case METHOD_HEADER_TINY_FORMAT:
+ mh = g_new0 (MonoMethodHeader, 1);
+ ptr++;
+ mh->max_stack = 8;
+ local_var_sig_tok = 0;
+ mh->code_size = flags >> 2;
+ mh->code = ptr;
+ return mh;
+ case METHOD_HEADER_TINY_FORMAT1:
+ mh = g_new0 (MonoMethodHeader, 1);
+ ptr++;
+ mh->max_stack = 8;
+ local_var_sig_tok = 0;
+
+ /*
+ * The spec claims 3 bits, but the Beta2 is
+ * incorrect
+ */
+ mh->code_size = flags >> 2;
+ mh->code = 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 = ptr;
+
+ if (!(fat_flags & METHOD_HEADER_MORE_SECTS))
+ break;
+
+ /*
+ * There are more sections
+ */
+ ptr = code + code_size;
+
+ break;
+
+ default:
+ return NULL;
+ }
+
+ if (local_var_sig_tok) {
+ MonoTableInfo *t = &m->tables [MONO_TABLE_STANDALONESIG];
+ const char *locals_ptr;
+ guint32 cols [MONO_STAND_ALONE_SIGNATURE_SIZE];
+ int len=0, i, bsize;
+
+ mono_metadata_decode_row (t, (local_var_sig_tok & 0xffffff)-1, cols, 1);
+ 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 (sizeof (MonoMethodHeader) + (len - MONO_ZERO_LEN_ARRAY) * sizeof (MonoType*));
+ mh->num_locals = len;
+ for (i = 0; i < len; ++i)
+ mh->locals [i] = mono_metadata_parse_type (m, MONO_PARSE_LOCAL, 0, locals_ptr, &locals_ptr);
+ } else {
+ mh = g_new0 (MonoMethodHeader, 1);
+ }
+ mh->code = code;
+ mh->code_size = code_size;
+ mh->max_stack = max_stack;
+ mh->init_locals = init_locals;
+ if (fat_flags & METHOD_HEADER_MORE_SECTS)
+ parse_section_data (mh, (const unsigned char*)ptr);
+ return mh;
+}
+
+/*
+ * 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;
+ for (i = 0; i < mh->num_locals; ++i)
+ mono_metadata_free_type (mh->locals[i]);
+ g_free (mh->clauses);
+ g_free (mh);
+}
+
+/**
+ * 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;
+
+#define CSIZE(x) (sizeof (x) / 4)
+
+/*
+ * 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;
+}
+
+/*
+ * 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.
+ * Returns 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 (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, typedef_locator))
+ g_assert_not_reached ();
+
+ /* 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.
+ * Returns 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 (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, typedef_locator))
+ g_assert_not_reached ();
+
+ /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
+ return loc.result + 1;
+}
+
+/*
+ * mono_metadata_interfaces_from_typedef:
+ * @meta: metadata context
+ * @index: typedef token
+ *
+ * Returns and array of interfaces that the @index typedef token implements.
+ * The number of elemnts in the array is returned in @count.
+ */
+MonoClass**
+mono_metadata_interfaces_from_typedef (MonoImage *meta, guint32 index, guint *count)
+{
+ MonoTableInfo *tdef = &meta->tables [MONO_TABLE_INTERFACEIMPL];
+ locator_t loc;
+ guint32 start, i;
+ guint32 cols [MONO_INTERFACEIMPL_SIZE];
+ MonoClass **result;
+
+ *count = 0;
+
+ if (!tdef->base)
+ return NULL;
+
+ loc.idx = mono_metadata_token_index (index);
+ loc.col_idx = MONO_INTERFACEIMPL_CLASS;
+ loc.t = tdef;
+
+ if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
+ return NULL;
+
+ 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;
+ }
+ result = NULL;
+ i = 0;
+ while (start < tdef->rows) {
+ mono_metadata_decode_row (tdef, start, cols, MONO_INTERFACEIMPL_SIZE);
+ if (cols [MONO_INTERFACEIMPL_CLASS] != loc.idx)
+ break;
+ result = g_renew (MonoClass*, result, i + 1);
+ result [i] = mono_class_get (meta, mono_metadata_token_from_dor (cols [MONO_INTERFACEIMPL_INTERFACE]));
+ *count = ++i;
+ ++start;
+ }
+ return result;
+}
+
+/*
+ * mono_metadata_nested_in_typedef:
+ * @meta: metadata context
+ * @index: typedef token
+ *
+ * Returns: the 1-based index into the TypeDef table of the type
+ * where the type described by @index is nested.
+ * Retruns 0 if @index describes a non-nested type.
+ */
+guint32
+mono_metadata_nested_in_typedef (MonoImage *meta, guint32 index)
+{
+ MonoTableInfo *tdef = &meta->tables [MONO_TABLE_NESTEDCLASS];
+ locator_t loc;
+
+ if (!tdef->base)
+ return 0;
+
+ loc.idx = mono_metadata_token_index (index);
+ loc.col_idx = MONO_NESTED_CLASS_NESTED;
+ loc.t = tdef;
+
+ if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
+ return 0;
+
+ /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
+ return mono_metadata_decode_row_col (tdef, loc.result, MONO_NESTED_CLASS_ENCLOSING) | MONO_TOKEN_TYPE_DEF;
+}
+
+/*
+ * mono_metadata_nesting_typedef:
+ * @meta: metadata context
+ * @index: typedef token
+ *
+ * Returns: the 1-based index into the TypeDef table of the first type
+ * that is nested inside the type described by @index.
+ * Retruns 0 if @index doesn't have nested types.
+ */
+guint32
+mono_metadata_nesting_typedef (MonoImage *meta, guint32 index)
+{
+ MonoTableInfo *tdef = &meta->tables [MONO_TABLE_NESTEDCLASS];
+ locator_t loc;
+ guint32 start;
+
+ if (!tdef->base)
+ return 0;
+
+ loc.idx = mono_metadata_token_index (index);
+ loc.col_idx = MONO_NESTED_CLASS_ENCLOSING;
+ loc.t = tdef;
+
+ if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
+ return 0;
+
+ start = loc.result;
+
+ while (start > 0) {
+ if (loc.idx == mono_metadata_decode_row_col (tdef, start - 1, MONO_NESTED_CLASS_ENCLOSING))
+ start--;
+ else
+ break;
+ }
+
+ /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
+ return start + 1;
+}
+
+/*
+ * mono_metadata_packing_from_typedef:
+ * @meta: metadata context
+ * @index: token representing a type
+ *
+ * Returns the info stored in the ClassLAyout table for the given typedef token
+ * into the @packing and @size pointers.
+ * Returns 0 if the info is not found.
+ */
+guint32
+mono_metadata_packing_from_typedef (MonoImage *meta, guint32 index, guint32 *packing, guint32 *size)
+{
+ MonoTableInfo *tdef = &meta->tables [MONO_TABLE_CLASSLAYOUT];
+ locator_t loc;
+ guint32 cols [MONO_CLASS_LAYOUT_SIZE];
+
+ if (!tdef->base)
+ return 0;
+
+ loc.idx = mono_metadata_token_index (index);
+ loc.col_idx = MONO_CLASS_LAYOUT_PARENT;
+ loc.t = tdef;
+
+ if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
+ return 0;
+
+ mono_metadata_decode_row (tdef, loc.result, cols, MONO_CLASS_LAYOUT_SIZE);
+ if (packing)
+ *packing = cols [MONO_CLASS_LAYOUT_PACKING_SIZE];
+ if (size)
+ *size = cols [MONO_CLASS_LAYOUT_CLASS_SIZE];
+
+ /* loc_result is 0..1, needs to be mapped to table index (that is +1) */
+ return loc.result + 1;
+}
+
+#ifndef __GNUC__
+#define __alignof__(a) sizeof(a)
+#endif
+
+/*
+ * 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, gint *align)
+{
+ if (!t) {
+ *align = 1;
+ return 0;
+ }
+ if (t->byref) {
+ *align = __alignof__(gpointer);
+ return sizeof (gpointer);
+ }
+
+ switch (t->type){
+ case MONO_TYPE_VOID:
+ *align = 1;
+ return 0;
+ case MONO_TYPE_BOOLEAN:
+ *align = __alignof__(char);
+ return sizeof (char);
+
+ case MONO_TYPE_CHAR:
+ *align = __alignof__(short);
+ return sizeof (short);
+
+ case MONO_TYPE_I1:
+ case MONO_TYPE_U1:
+ *align = __alignof__(char);
+ return 1;
+
+ case MONO_TYPE_I2:
+ case MONO_TYPE_U2:
+ *align = __alignof__(gint16);
+ return 2;
+
+ case MONO_TYPE_I4:
+ case MONO_TYPE_U4:
+ *align = __alignof__(gint32);
+ return 4;
+ case MONO_TYPE_R4:
+ *align = __alignof__(float);
+ return 4;
+
+ case MONO_TYPE_I8:
+ case MONO_TYPE_U8:
+ *align = __alignof__(gint64);
+ case MONO_TYPE_R8:
+ *align = __alignof__(double);
+ return 8;
+
+ case MONO_TYPE_I:
+ case MONO_TYPE_U:
+ *align = __alignof__(gpointer);
+ return sizeof (gpointer);
+
+ case MONO_TYPE_STRING:
+ *align = __alignof__(gpointer);
+ return sizeof (gpointer);
+
+ case MONO_TYPE_OBJECT:
+ *align = __alignof__(gpointer);
+ return sizeof (gpointer);
+
+ case MONO_TYPE_VALUETYPE: {
+ guint32 size;
+
+ if (!t->data.klass->size_inited)
+ mono_class_init (t->data.klass);
+
+ if (t->data.klass->enumtype) {
+ return mono_type_size (t->data.klass->enum_basetype, align);
+ } else {
+ size = mono_class_value_size (t->data.klass, align);
+ return size;
+ }
+ }
+ case MONO_TYPE_CLASS:
+ case MONO_TYPE_SZARRAY:
+ case MONO_TYPE_PTR:
+ case MONO_TYPE_FNPTR:
+ case MONO_TYPE_ARRAY:
+ case MONO_TYPE_TYPEDBYREF: /* we may want to use a struct {MonoType* type, void *data } instead ...*/
+ *align = __alignof__(gpointer);
+ return sizeof (gpointer);
+ default:
+ g_error ("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, gint *align)
+{
+ g_assert (t != NULL);
+
+ if (t->byref) {
+ *align = __alignof__(gpointer);
+ return sizeof (gpointer);
+ }
+
+ 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:
+ case MONO_TYPE_TYPEDBYREF:
+ *align = __alignof__(gpointer);
+ return sizeof (gpointer);
+ case MONO_TYPE_R4:
+ *align = __alignof__(float);
+ return 4;
+
+ case MONO_TYPE_I8:
+ case MONO_TYPE_U8:
+ *align = __alignof__(gint64);
+ case MONO_TYPE_R8:
+ *align = __alignof__(double);
+ return 8;
+
+ case MONO_TYPE_VALUETYPE: {
+ guint32 size;
+
+ if (t->data.klass->enumtype)
+ return mono_type_stack_size (t->data.klass->enum_basetype, align);
+ else {
+ size = mono_class_value_size (t->data.klass, align);
+ *align = __alignof__(gpointer);
+ return size;
+ }
+ }
+ default:
+ g_error ("type 0x%02x unknown", t->type);
+ }
+ return 0;
+}
+
+/*
+ * mono_metadata_type_hash:
+ * @t1: a type
+ *
+ * Computes an hash value for @t1 to be used in GHashTable.
+ */
+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:
+ /* check if the distribution is good enough */
+ return hash << 7 | g_str_hash (t1->data.klass->name);
+ case MONO_TYPE_PTR:
+ case MONO_TYPE_SZARRAY:
+ return hash << 7 | mono_metadata_type_hash (t1->data.type);
+ }
+ return hash;
+}
+
+/*
+ * 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.
+ */
+gboolean
+mono_metadata_type_equal (MonoType *t1, MonoType *t2)
+{
+ 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:
+ return TRUE;
+ case MONO_TYPE_VALUETYPE:
+ case MONO_TYPE_CLASS:
+ return t1->data.klass == t2->data.klass;
+ case MONO_TYPE_PTR:
+ case MONO_TYPE_SZARRAY:
+ return mono_metadata_type_equal (t1->data.type, t2->data.type);
+ case MONO_TYPE_ARRAY:
+ if (t1->data.array->rank != t2->data.array->rank)
+ return FALSE;
+ return mono_metadata_type_equal (t1->data.array->type, t2->data.array->type);
+ default:
+ g_error ("implement type compare for %0x!", t1->type);
+ return FALSE;
+ }
+
+ return FALSE;
+}
+
+/*
+ * 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;
+
+ 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 (!mono_metadata_type_equal (p1, p2))
+ return FALSE;
+ }
+
+ if (!mono_metadata_type_equal (sig1->ret, sig2->ret))
+ return FALSE;
+ return TRUE;
+}
+
+/*
+ * 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 <= 127)
+ *p++ = value;
+ else if (value <= 16384) {
+ 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_info: a pointer to the marshal signature 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_info can be NULL if you're not interested
+ * in the data.
+ */
+void
+mono_metadata_field_info (MonoImage *meta, guint32 index, guint32 *offset, guint32 *rva, const char **marshal_info)
+{
+ MonoTableInfo *tdef;
+ locator_t loc;
+
+ loc.idx = index + 1;
+ if (offset) {
+ tdef = &meta->tables [MONO_TABLE_FIELDLAYOUT];
+
+ loc.col_idx = MONO_FIELD_LAYOUT_FIELD;
+ loc.t = tdef;
+
+ if (tdef->base && bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator)) {
+ *offset = mono_metadata_decode_row_col (tdef, loc.result, MONO_FIELD_LAYOUT_OFFSET);
+ } else {
+ *offset = (guint32)-1;
+ }
+ }
+ if (rva) {
+ tdef = &meta->tables [MONO_TABLE_FIELDRVA];
+
+ loc.col_idx = MONO_FIELD_RVA_FIELD;
+ loc.t = tdef;
+
+ if (tdef->base && bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator)) {
+ /*
+ * LAMESPEC: There is no signature, no nothing, just the raw data.
+ */
+ *rva = mono_metadata_decode_row_col (tdef, loc.result, MONO_FIELD_RVA_RVA);
+ } else {
+ *rva = 0;
+ }
+ }
+
+}
+
+/*
+ * 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
+ *
+ * @token must be a FieldDef, ParamDef or PropertyDef token.
+ *
+ * Returns: the index into the Constsnts table or 0 if not found.
+ */
+guint32
+mono_metadata_get_constant_index (MonoImage *meta, guint32 token)
+{
+ MonoTableInfo *tdef;
+ locator_t loc;
+ guint32 index = mono_metadata_token_index (token);
+
+ tdef = &meta->tables [MONO_TABLE_CONSTANT];
+ index <<= HASCONSTANT_BITS;
+ switch (mono_metadata_token_table (token)) {
+ case MONO_TABLE_FIELD:
+ index |= HASCONSTANT_FIEDDEF;
+ break;
+ case MONO_TABLE_PARAM:
+ index |= HASCONSTANT_PARAM;
+ break;
+ case MONO_TABLE_PROPERTY:
+ index |= 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;
+
+ if (tdef->base && bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator)) {
+ return loc.result + 1;
+ }
+ return 0;
+}
+
+/*
+ * mono_metadata_events_from_typedef:
+ * @meta: metadata context
+ * @index: 0-based index (in the TypeDef table) describing a type
+ *
+ * Returns: the 0-based index in the Event table for the events in the
+ * type. The last event that belongs to the type (plus 1) is stored
+ * in the @end_idx pointer.
+ */
+guint32
+mono_metadata_events_from_typedef (MonoImage *meta, guint32 index, guint *end_idx)
+{
+ locator_t loc;
+ guint32 start, end;
+ MonoTableInfo *tdef = &meta->tables [MONO_TABLE_EVENTMAP];
+
+ *end_idx = 0;
+
+ if (!tdef->base)
+ return 0;
+
+ loc.t = tdef;
+ loc.col_idx = MONO_EVENT_MAP_PARENT;
+ loc.idx = index + 1;
+
+ if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
+ return 0;
+
+ start = mono_metadata_decode_row_col (tdef, loc.result, MONO_EVENT_MAP_EVENTLIST);
+ if (loc.result + 1 < tdef->rows) {
+ end = mono_metadata_decode_row_col (tdef, loc.result + 1, MONO_EVENT_MAP_EVENTLIST) - 1;
+ } else {
+ end = meta->tables [MONO_TABLE_EVENT].rows;
+ }
+
+ *end_idx = end;
+ return start - 1;
+}
+
+/*
+ * mono_metadata_methods_from_event:
+ * @meta: metadata context
+ * @index: 0-based index (in the Event table) describing a event
+ *
+ * Returns: the 0-based index in the MethodDef table for the methods in the
+ * event. The last method that belongs to the event (plus 1) is stored
+ * in the @end_idx pointer.
+ */
+guint32
+mono_metadata_methods_from_event (MonoImage *meta, guint32 index, guint *end_idx)
+{
+ locator_t loc;
+ guint start, end;
+ guint32 cols [MONO_METHOD_SEMA_SIZE];
+ MonoTableInfo *msemt = &meta->tables [MONO_TABLE_METHODSEMANTICS];
+
+ *end_idx = 0;
+ if (!msemt->base)
+ return 0;
+
+ loc.t = msemt;
+ loc.col_idx = MONO_METHOD_SEMA_ASSOCIATION;
+ loc.idx = ((index + 1) << HAS_SEMANTICS_BITS) | HAS_SEMANTICS_EVENT; /* Method association coded index */
+
+ if (!bsearch (&loc, msemt->base, msemt->rows, msemt->row_size, table_locator))
+ return 0;
+
+ start = loc.result;
+ /*
+ * We may end up in the middle of the rows...
+ */
+ while (start > 0) {
+ if (loc.idx == mono_metadata_decode_row_col (msemt, start - 1, MONO_METHOD_SEMA_ASSOCIATION))
+ start--;
+ else
+ break;
+ }
+ end = start + 1;
+ while (end < msemt->rows) {
+ mono_metadata_decode_row (msemt, end, cols, MONO_METHOD_SEMA_SIZE);
+ if (cols [MONO_METHOD_SEMA_ASSOCIATION] != loc.idx)
+ break;
+ ++end;
+ }
+ *end_idx = end;
+ return start;
+}
+
+/*
+ * mono_metadata_properties_from_typedef:
+ * @meta: metadata context
+ * @index: 0-based index (in the TypeDef table) describing a type
+ *
+ * Returns: the 0-based index in the Property table for the properties in the
+ * type. The last property that belongs to the type (plus 1) is stored
+ * in the @end_idx pointer.
+ */
+guint32
+mono_metadata_properties_from_typedef (MonoImage *meta, guint32 index, guint *end_idx)
+{
+ locator_t loc;
+ guint32 start, end;
+ MonoTableInfo *tdef = &meta->tables [MONO_TABLE_PROPERTYMAP];
+
+ *end_idx = 0;
+
+ if (!tdef->base)
+ return 0;
+
+ loc.t = tdef;
+ loc.col_idx = MONO_PROPERTY_MAP_PARENT;
+ loc.idx = index + 1;
+
+ if (!bsearch (&loc, tdef->base, tdef->rows, tdef->row_size, table_locator))
+ return 0;
+
+ start = mono_metadata_decode_row_col (tdef, loc.result, MONO_PROPERTY_MAP_PROPERTY_LIST);
+ if (loc.result + 1 < tdef->rows) {
+ end = mono_metadata_decode_row_col (tdef, loc.result + 1, MONO_PROPERTY_MAP_PROPERTY_LIST) - 1;
+ } else {
+ end = meta->tables [MONO_TABLE_PROPERTY].rows;
+ }
+
+ *end_idx = end;
+ return start - 1;
+}
+
+/*
+ * mono_metadata_methods_from_property:
+ * @meta: metadata context
+ * @index: 0-based index (in the PropertyDef table) describing a property
+ *
+ * Returns: the 0-based index in the MethodDef table for the methods in the
+ * property. The last method that belongs to the property (plus 1) is stored
+ * in the @end_idx pointer.
+ */
+guint32
+mono_metadata_methods_from_property (MonoImage *meta, guint32 index, guint *end_idx)
+{
+ locator_t loc;
+ guint start, end;
+ guint32 cols [MONO_METHOD_SEMA_SIZE];
+ MonoTableInfo *msemt = &meta->tables [MONO_TABLE_METHODSEMANTICS];
+
+ *end_idx = 0;
+ if (!msemt->base)
+ return 0;
+
+ loc.t = msemt;
+ loc.col_idx = MONO_METHOD_SEMA_ASSOCIATION;
+ loc.idx = ((index + 1) << HAS_SEMANTICS_BITS) | HAS_SEMANTICS_PROPERTY; /* Method association coded index */
+
+ if (!bsearch (&loc, msemt->base, msemt->rows, msemt->row_size, table_locator))
+ return 0;
+
+ start = loc.result;
+ /*
+ * We may end up in the middle of the rows...
+ */
+ while (start > 0) {
+ if (loc.idx == mono_metadata_decode_row_col (msemt, start - 1, MONO_METHOD_SEMA_ASSOCIATION))
+ start--;
+ else
+ break;
+ }
+ end = start + 1;
+ while (end < msemt->rows) {
+ mono_metadata_decode_row (msemt, end, cols, MONO_METHOD_SEMA_SIZE);
+ if (cols [MONO_METHOD_SEMA_ASSOCIATION] != loc.idx)
+ break;
+ ++end;
+ }
+ *end_idx = end;
+ return start;
+}
+
+/**
+ * @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;
+
+ 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]);
+ len = mono_metadata_decode_value (ptr, &ptr);
+ type = mono_metadata_parse_type (image, MONO_PARSE_TYPE, 0, ptr, &ptr);
+
+ return type;
+}
projects / mono.git / blobdiff