#include <glib.h>
#include "metadata.h"
#include "tabledefs.h"
-#include "endian.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:
*
#define idx_size(tableidx) (meta->tables [(tableidx)].rows < 65536 ? 2 : 4)
/* Reference: Partition II - 23.2.6 */
-static int
-compute_size (MonoMetadata *meta, MonoMetaTable *table, int tableindex, guint32 *result_bitfield)
+/*
+ * 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){
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);
- /* Permission seems to be a blob heap pointer */
+ 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);
- /* Signature seems to be a blob heap pointer */
+ 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);
* This is an internal function used by the image loader code.
*/
void
-mono_metadata_compute_table_bases (MonoMetadata *meta)
+mono_metadata_compute_table_bases (MonoImage *meta)
{
int i;
- char *base = meta->tables_base;
+ const char *base = meta->tables_base;
for (i = 0; i < 64; i++){
if (meta->tables [i].rows == 0)
continue;
- meta->tables [i].row_size = compute_size (
- meta, tables [i].table, i,
- &meta->tables [i].size_bitfield);
+ 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;
}
* Returns a pointer to the @idx element in the metadata table
* whose code is @table.
*/
-char *
-mono_metadata_locate (MonoMetadata *meta, int table, int idx)
+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));
}
-char *
-mono_metadata_locate_token (MonoMetadata *meta, guint32 token)
+/**
+ * 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);
}
* Returns: an in-memory pointer to the @index in the string heap.
*/
const char *
-mono_metadata_string_heap (MonoMetadata *meta, guint32 index)
+mono_metadata_string_heap (MonoImage *meta, guint32 index)
{
g_return_val_if_fail (index < meta->heap_strings.size, "");
- return meta->raw_metadata + meta->heap_strings.offset + index;
+ 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 (MonoMetadata *meta, guint32 index)
+mono_metadata_user_string (MonoImage *meta, guint32 index)
{
g_return_val_if_fail (index < meta->heap_us.size, "");
- return meta->raw_metadata + meta->heap_us.offset + index;
+ return meta->heap_us.data + index;
}
/**
* Returns: an in-memory pointer to the @index in the Blob heap.
*/
const char *
-mono_metadata_blob_heap (MonoMetadata *meta, guint32 index)
+mono_metadata_blob_heap (MonoImage *meta, guint32 index)
{
g_return_val_if_fail (index < meta->heap_blob.size, "");
- return meta->raw_metadata + meta->heap_blob.offset + index;
+ 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 *
{
guint32 bitfield = t->size_bitfield;
int i, count = mono_metadata_table_count (bitfield);
- char *data = t->base + idx * t->row_size;
+ const char *data = t->base + idx * t->row_size;
g_assert (res_size == count);
{
guint32 bitfield = t->size_bitfield;
int i;
- register char *data = t->base + idx * t->row_size;
+ register const char *data = t->base + idx * t->row_size;
register int n;
g_assert (col < mono_metadata_table_count (bitfield));
guint32
mono_metadata_decode_blob_size (const char *xptr, const char **rptr)
{
- const unsigned char *ptr = xptr;
+ const unsigned char *ptr = (const unsigned char *)xptr;
guint32 size;
if ((*ptr & 0x80) == 0){
guint32
mono_metadata_decode_value (const char *_ptr, const char **rptr)
{
- const unsigned char *ptr = (unsigned char *) _ptr;
+ const unsigned char *ptr = (const unsigned char *) _ptr;
unsigned char b = *ptr;
guint32 len;
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 (MonoMetadata *m, const char *ptr, const char **rptr)
+mono_metadata_parse_typedef_or_ref (MonoImage *m, const char *ptr, const char **rptr)
{
guint32 token;
- guint table;
token = mono_metadata_decode_value (ptr, &ptr);
-
- switch (token & 0x03) {
- case 0: table = MONO_TABLE_TYPEDEF; break;
- case 1: table = MONO_TABLE_TYPEREF; break;
- case 2: table = MONO_TABLE_TYPESPEC; break;
- default: g_error ("Unhandled encoding for typedef-or-ref coded index");
- }
if (rptr)
*rptr = ptr;
- return (token >> 2) | table << 24;
+ 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 (MonoMetadata *m, MonoCustomMod *dest, const char *ptr, const char **rptr)
+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->mod = *ptr++;
- dest->token = mono_metadata_parse_typedef_or_ref (m, ptr, &ptr);
+ 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;
}
-MonoArray *
-mono_metadata_parse_array (MonoMetadata *m, const char *ptr, const char **rptr)
+/*
+ * 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;
- MonoArray *array = g_new0 (MonoArray, 1);
+ MonoArrayType *array = g_new0 (MonoArrayType, 1);
- array->type = mono_metadata_parse_type (m, ptr, &ptr);
+ 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);
return array;
}
+/*
+ * mono_metadata_free_array:
+ * @array: array description
+ *
+ * Frees the array description returned from mono_metadata_parse_array().
+ */
void
-mono_metadata_free_array (MonoArray *array)
+mono_metadata_free_array (MonoArrayType *array)
{
mono_metadata_free_type (array->type);
g_free (array->sizes);
g_free (array);
}
-MonoParam *
-mono_metadata_parse_param (MonoMetadata *m, int rettype, const char *ptr, const char **rptr)
+/*
+ * 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 char *tmp_ptr = ptr;
- MonoParam *param;
- int count = 0;
- int byref = 0;
-
- /* count the modifiers */
- while (mono_metadata_parse_custom_mod (m, NULL, tmp_ptr, &tmp_ptr))
- count++;
- param = g_malloc0(sizeof(MonoParam)+(count-MONO_ZERO_LEN_ARRAY)*sizeof(MonoCustomMod));
- param->num_modifiers = count;
- /* save them this time */
- count = 0;
- while (mono_metadata_parse_custom_mod (m, &(param->modifiers[count]), ptr, &ptr))
- count++;
- switch (*ptr) {
- case MONO_TYPE_TYPEDBYREF:
- param->typedbyref = 1;
- ptr++;
+ 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:
- byref = 1;
+ 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 && !rettype)
- g_error ("void not allowed in param");
- param->type = mono_metadata_parse_type (m, ptr, &ptr);
- param->type->byref = byref;
+ /*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;
- return param;
-}
-
-void
-mono_metadata_free_param (MonoParam *param)
-{
- if (param->type)
- mono_metadata_free_type (param->type);
- g_free (param);
+ 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 (MonoMetadata *m, int def, const char *ptr, const char **rptr)
+mono_metadata_parse_method_signature (MonoImage *m, int def, const char *ptr, const char **rptr)
{
- MonoMethodSignature *method = g_new0(MonoMethodSignature, 1);
- int i, align, offset = 0;
+ MonoMethodSignature *method;
+ int i;
+ guint32 hasthis = 0, explicit_this = 0, call_convention, param_count;
if (*ptr & 0x20)
- method->hasthis = 1;
+ hasthis = 1;
if (*ptr & 0x40)
- method->explicit_this = 1;
- method->call_convention = *ptr & 0x0F;
+ explicit_this = 1;
+ call_convention = *ptr & 0x0F;
ptr++;
- method->param_count = mono_metadata_decode_value (ptr, &ptr);
- method->ret = mono_metadata_parse_param (m, 1, ptr, &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->hasthis)
- offset += sizeof(gpointer);
if (method->param_count) {
- int size;
-
- method->params = g_new0(MonoParam*, method->param_count);
method->sentinelpos = -1;
for (i = 0; i < method->param_count; ++i) {
method->sentinelpos = i;
ptr++;
}
- method->params [i] = mono_metadata_parse_param (m, 0, ptr, &ptr);
- size = mono_type_size (method->params [i]->type, &align);
- offset += (offset % align);
- offset += size;
+ method->params [i] = mono_metadata_parse_type (m, MONO_PARSE_PARAM, 0, ptr, &ptr);
}
}
- method->params_size = offset;
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 *method)
+mono_metadata_free_method_signature (MonoMethodSignature *sig)
{
int i;
- mono_metadata_free_param (method->ret);
- for (i = 0; i < method->param_count; ++i)
- mono_metadata_free_param (method->params[i]);
+ mono_metadata_free_type (sig->ret);
+ for (i = 0; i < sig->param_count; ++i)
+ mono_metadata_free_type (sig->params [i]);
- g_free (method->params);
- g_free (method);
+ g_free (sig);
}
/*
* This extracts a Type as specified in Partition II (22.2.12)
*/
static void
-do_mono_metadata_parse_type (MonoType *type, MonoMetadata *m, const char *ptr, const char **rptr)
+do_mono_metadata_parse_type (MonoType *type, MonoImage *m, const char *ptr, const char **rptr)
{
type->type = mono_metadata_decode_value (ptr, &ptr);
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:
- if (mono_metadata_parse_custom_mod (m, NULL, ptr, NULL)) {
- const char *tmp_ptr = ptr;
- MonoModifiedType *mtype;
- int count = 0;
-
- type->custom_mod = 1;
- /* count the modifiers */
- while (mono_metadata_parse_custom_mod (m, NULL, tmp_ptr, &tmp_ptr))
- count++;
- type->data.mtype = mtype = g_malloc0(sizeof(MonoModifiedType)+(count-MONO_ZERO_LEN_ARRAY)*sizeof(MonoCustomMod));
- mtype->num_modifiers = count;
- count = 0;
-
- /* save them this time */
- while (mono_metadata_parse_custom_mod (m, &(mtype->modifiers[count]), ptr, &ptr))
- count++;
- mtype->type = mono_metadata_parse_type (m, ptr, &ptr);
- } else {
- type->data.type = mono_metadata_parse_type (m, ptr, &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);
*rptr = ptr;
}
-/**
- * mono_metadata_parse_type:
- * @m: metadata context to scan
- * @ptr: pointer to encoded Type stream.
- * @rptr: the new position in the stream after parsing the type
+/*
+ * mono_metadata_free_type:
+ * @type: type to free
*
- * Returns: A MonoType structure that has the parsed information
- * from the type stored at @ptr in the metadata table @m.
+ * Free the memory allocated for type @type.
*/
-MonoType *
-mono_metadata_parse_type (MonoMetadata *m, const char *ptr, const char **rptr)
-{
- /* should probably be allocated in a memchunk */
- MonoType *type = g_new0(MonoType, 1);
-
- do_mono_metadata_parse_type (type, m, ptr, rptr);
-
- return 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:
- if (!type->custom_mod) {
- if (type->data.type)
- mono_metadata_free_type (type->data.type);
- } else if (type->data.mtype) {
- mono_metadata_free_type (type->data.mtype->type);
- g_free (type->data.mtype);
- }
+ mono_metadata_free_type (type->data.type);
break;
case MONO_TYPE_FNPTR:
mono_metadata_free_method_signature (type->data.method);
g_free (type);
}
+#if 0
static void
hex_dump (const char *buffer, int base, int count)
{
}
fflush (stdout);
}
+#endif
/**
* @mh: The Method header
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);
}
/* 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 */
}
}
+/*
+ * 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 (MonoMetadata *m, const char *ptr)
+mono_metadata_parse_mh (MonoImage *m, const char *ptr)
{
MonoMethodHeader *mh;
- unsigned char flags = *(unsigned char *) ptr;
+ unsigned char flags = *(const unsigned char *) ptr;
unsigned char format = flags & METHOD_HEADER_FORMAT_MASK;
guint16 fat_flags;
- guint32 local_var_sig_tok;
+ 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);
- mh = g_new0 (MonoMethodHeader, 1);
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;
- break;
-
+ 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
- //
+ /*
+ * The spec claims 3 bits, but the Beta2 is
+ * incorrect
+ */
mh->code_size = flags >> 2;
mh->code = ptr;
- break;
-
+ return mh;
case METHOD_HEADER_FAT_FORMAT:
fat_flags = read16 (ptr);
ptr += 2;
hsize = (fat_flags >> 12) & 0xf;
- mh->max_stack = *(guint16 *) ptr;
+ max_stack = read16 (ptr);
ptr += 2;
- mh->code_size = *(guint32 *) ptr;
+ code_size = read32 (ptr);
ptr += 4;
- local_var_sig_tok = *(guint32 *) ptr;
+ local_var_sig_tok = read32 (ptr);
ptr += 4;
if (fat_flags & METHOD_HEADER_INIT_LOCALS)
- mh->init_locals = 1;
+ init_locals = 1;
else
- mh->init_locals = 0;
+ init_locals = 0;
- mh->code = ptr;
+ code = ptr;
if (!(fat_flags & METHOD_HEADER_MORE_SECTS))
break;
/*
* There are more sections
*/
- ptr = mh->code + mh->code_size;
+ ptr = code + code_size;
- parse_section_data (mh, (const unsigned char*)ptr);
break;
default:
- g_free (mh);
return NULL;
}
if (local_var_sig_tok) {
MonoTableInfo *t = &m->tables [MONO_TABLE_STANDALONESIG];
- const char *ptr;
- guint32 cols [MONO_STAND_ALONG_SIGNATURE_SIZE];
+ const char *locals_ptr;
+ guint32 cols [MONO_STAND_ALONE_SIGNATURE_SIZE];
int len=0, i, bsize;
- guint offset = 0;
mono_metadata_decode_row (t, (local_var_sig_tok & 0xffffff)-1, cols, 1);
- ptr = mono_metadata_blob_heap (m, cols [MONO_STAND_ALONG_SIGNATURE]);
- bsize = mono_metadata_decode_blob_size (ptr, &ptr);
- if (*ptr != 0x07)
+ 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");
- ptr++;
- len = mono_metadata_decode_value (ptr, &ptr);
+ 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;
- if (!mh->num_locals)
- return mh;
- mh->locals = g_new (MonoType*, len);
- for (i = 0; i < len; ++i) {
- gboolean pinned = FALSE;
- int val;
- int align;
- const char *p = ptr;
- val = mono_metadata_decode_blob_size (ptr, &ptr);
- if (val == MONO_TYPE_PINNED) {
- p = ptr;
- pinned = TRUE;
- val = mono_metadata_decode_blob_size (ptr, &ptr);
- }
- if (val == MONO_TYPE_BYREF) {
- p = ptr;
- }
- mh->locals [i] = mono_metadata_parse_type (m, p, &ptr);
- if (pinned)
- mh->locals [i]->constraint = MONO_TYPE_PINNED;
- if (val == MONO_TYPE_BYREF)
- mh->locals [i]->byref = 1;
-
- val = mono_type_size (mh->locals [i], &align);
- offset += (offset % align);
- offset += val;
- }
- mh->locals_size = offset;
+ 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->locals);
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 MonoFieldType that was extracted from @ptr.
+ * 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.
*/
-MonoFieldType *
-mono_metadata_parse_field_type (MonoMetadata *m, const char *ptr, const char **rptr)
+MonoType *
+mono_metadata_parse_param (MonoImage *m, const char *ptr, const char **rptr)
{
- return mono_metadata_parse_param (m, 0, ptr, rptr);
+ return mono_metadata_parse_type (m, MONO_PARSE_PARAM, 0, ptr, rptr);
}
/*
guint32
mono_metadata_token_from_dor (guint32 dor_index)
{
- int table, idx;
+ guint32 table, idx;
table = dor_index & 0x03;
idx = dor_index >> 2;
* 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.
typedef_locator (const void *a, const void *b)
{
locator_t *loc = (locator_t *) a;
- char *bb = (char *) b;
+ const char *bb = (const char *) b;
int typedef_index = (bb - loc->t->base) / loc->t->row_size;
guint32 col, col_next;
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 (MonoMetadata *meta, guint32 index)
+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;
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 (MonoMetadata *meta, guint32 index)
+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;
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
case MONO_TYPE_VALUETYPE: {
guint32 size;
- size = mono_class_value_size (t->data.klass, align);
- return 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:
return 0;
}
-static gboolean
-mono_metadata_type_equal (MonoMetadata *m1, MonoType *t1, MonoMetadata *m2, MonoType *t2)
+/*
+ * 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)
case MONO_TYPE_I:
case MONO_TYPE_U:
case MONO_TYPE_OBJECT:
- break;
+ 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 TRUE;
+ 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 (MonoMetadata *m1, MonoMethodSignature *sig1,
- MonoMetadata *m2, MonoMethodSignature *sig2)
+mono_metadata_signature_equal (MonoMethodSignature *sig1, MonoMethodSignature *sig2)
{
int i;
return FALSE;
for (i = 0; i < sig1->param_count; i++) {
- MonoParam *p1 = sig1->params[i];
- MonoParam *p2 = sig2->params[i];
+ MonoType *p1 = sig1->params[i];
+ MonoType *p2 = sig2->params[i];
- if (p1->param_attrs != p2->param_attrs ||
- p1->typedbyref != p2->typedbyref)
+ if (p1->attrs != p2->attrs)
return FALSE;
- if (!mono_metadata_type_equal (m1, p1->type, m2, p2->type))
+ 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