3 * Images created at runtime.
7 * Paolo Molaro (lupus@ximian.com)
9 * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
10 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
11 * Copyright 2011 Rodrigo Kumpera
12 * Copyright 2016 Microsoft
14 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
19 #include "mono/metadata/object.h"
20 #include "mono/metadata/dynamic-image-internals.h"
21 #include "mono/metadata/dynamic-stream-internals.h"
22 #include "mono/metadata/gc-internals.h"
23 #include "mono/metadata/metadata-internals.h"
24 #include "mono/metadata/profiler-private.h"
25 #include "mono/metadata/reflection-internals.h"
26 #include "mono/metadata/sre-internals.h"
27 #include "mono/utils/checked-build.h"
28 #include "mono/utils/mono-error-internals.h"
29 #include "mono/utils/mono-os-mutex.h"
31 const unsigned char table_sizes [MONO_TABLE_NUM] = {
41 MONO_INTERFACEIMPL_SIZE,
42 MONO_MEMBERREF_SIZE, /* 0x0A */
44 MONO_CUSTOM_ATTR_SIZE,
45 MONO_FIELD_MARSHAL_SIZE,
46 MONO_DECL_SECURITY_SIZE,
47 MONO_CLASS_LAYOUT_SIZE,
48 MONO_FIELD_LAYOUT_SIZE, /* 0x10 */
49 MONO_STAND_ALONE_SIGNATURE_SIZE,
53 MONO_PROPERTY_MAP_SIZE,
56 MONO_METHOD_SEMA_SIZE,
58 MONO_MODULEREF_SIZE, /* 0x1A */
64 MONO_ASSEMBLY_SIZE, /* 0x20 */
65 MONO_ASSEMBLY_PROCESSOR_SIZE,
67 MONO_ASSEMBLYREF_SIZE,
68 MONO_ASSEMBLYREFPROC_SIZE,
69 MONO_ASSEMBLYREFOS_SIZE,
73 MONO_NESTED_CLASS_SIZE,
75 MONO_GENERICPARAM_SIZE, /* 0x2A */
77 MONO_GENPARCONSTRAINT_SIZE
81 // The dynamic images list is only needed to support the mempool reference tracking feature in checked-build.
82 static GPtrArray *dynamic_images;
83 static mono_mutex_t dynamic_images_mutex;
86 dynamic_images_lock (void)
88 mono_os_mutex_lock (&dynamic_images_mutex);
92 dynamic_images_unlock (void)
94 mono_os_mutex_unlock (&dynamic_images_mutex);
98 mono_dynamic_images_init (void)
100 mono_os_mutex_init (&dynamic_images_mutex);
103 #ifndef DISABLE_REFLECTION_EMIT
105 string_heap_init (MonoDynamicStream *sh)
107 mono_dynstream_init (sh);
111 #ifndef DISABLE_REFLECTION_EMIT
113 mono_blob_entry_hash (const char* str)
115 MONO_REQ_GC_NEUTRAL_MODE;
119 len = mono_metadata_decode_blob_size (str, &str);
123 for (str += 1; str < end; str++)
124 h = (h << 5) - h + *str;
132 mono_blob_entry_equal (const char *str1, const char *str2) {
133 MONO_REQ_GC_NEUTRAL_MODE;
138 len = mono_metadata_decode_blob_size (str1, &end1);
139 len2 = mono_metadata_decode_blob_size (str2, &end2);
142 return memcmp (end1, end2, len) == 0;
148 * mono_find_dynamic_image_owner:
150 * Find the dynamic image, if any, which a given pointer is located in the memory of.
153 mono_find_dynamic_image_owner (void *ptr)
155 MonoImage *owner = NULL;
158 dynamic_images_lock ();
162 for (i = 0; !owner && i < dynamic_images->len; ++i) {
163 MonoImage *image = (MonoImage *)g_ptr_array_index (dynamic_images, i);
164 if (mono_mempool_contains_addr (image->mempool, ptr))
169 dynamic_images_unlock ();
175 dynamic_image_lock (MonoDynamicImage *image)
178 mono_image_lock ((MonoImage*)image);
183 dynamic_image_unlock (MonoDynamicImage *image)
185 mono_image_unlock ((MonoImage*)image);
188 #ifndef DISABLE_REFLECTION_INIT
190 * mono_dynamic_image_register_token:
192 * Register the TOKEN->OBJ mapping in the mapping table in ASSEMBLY. This is required for
193 * the Module.ResolveXXXToken () methods to work.
196 mono_dynamic_image_register_token (MonoDynamicImage *assembly, guint32 token, MonoObjectHandle obj)
198 MONO_REQ_GC_UNSAFE_MODE;
200 dynamic_image_lock (assembly);
201 mono_g_hash_table_insert (assembly->tokens, GUINT_TO_POINTER (token), MONO_HANDLE_RAW (obj));
202 dynamic_image_unlock (assembly);
206 mono_dynamic_image_register_token (MonoDynamicImage *assembly, guint32 token, MonoObjectHandle obj)
212 lookup_dyn_token (MonoDynamicImage *assembly, guint32 token)
214 MONO_REQ_GC_UNSAFE_MODE;
218 dynamic_image_lock (assembly);
219 obj = (MonoObject *)mono_g_hash_table_lookup (assembly->tokens, GUINT_TO_POINTER (token));
220 dynamic_image_unlock (assembly);
227 * mono_dynamic_image_is_valid_token:
229 * Returns TRUE if token is valid in the given image.
233 mono_dynamic_image_is_valid_token (MonoDynamicImage *image, guint32 token)
235 return lookup_dyn_token (image, token) != NULL;
238 #ifndef DISABLE_REFLECTION_EMIT
240 #endif /* DISABLE_REFLECTION_EMIT */
242 #ifndef DISABLE_REFLECTION_EMIT
244 * mono_reflection_lookup_dynamic_token:
246 * Finish the Builder object pointed to by TOKEN and return the corresponding
247 * runtime structure. If HANDLE_CLASS is not NULL, it is set to the class required by
248 * mono_ldtoken. If valid_token is TRUE, assert if it is not found in the token->object
251 * LOCKING: Take the loader lock
254 mono_reflection_lookup_dynamic_token (MonoImage *image, guint32 token, gboolean valid_token, MonoClass **handle_class, MonoGenericContext *context, MonoError *error)
256 MonoDynamicImage *assembly = (MonoDynamicImage*)image;
262 obj = lookup_dyn_token (assembly, token);
265 g_error ("Could not find required dynamic token 0x%08x", token);
267 mono_error_set_execution_engine (error, "Could not find dynamic token 0x%08x", token);
273 handle_class = &klass;
274 gpointer result = mono_reflection_resolve_object (image, obj, handle_class, context, error);
277 #else /* DISABLE_REFLECTION_EMIT */
279 mono_reflection_lookup_dynamic_token (MonoImage *image, guint32 token, gboolean valid_token, MonoClass **handle_class, MonoGenericContext *context, MonoError *error)
284 #endif /* DISABLE_REFLECTION_EMIT */
286 #ifndef DISABLE_REFLECTION_EMIT
288 mono_dynamic_image_create (MonoDynamicAssembly *assembly, char *assembly_name, char *module_name)
290 static const guchar entrycode [16] = {0xff, 0x25, 0};
291 MonoDynamicImage *image;
296 if (!strcmp (mono_get_runtime_info ()->framework_version, "2.1"))
297 version = "v2.0.50727"; /* HACK: SL 2 enforces the .net 2 metadata version */
299 version = mono_get_runtime_info ()->runtime_version;
302 /* The MonoGHashTable's need GC tracking */
303 image = (MonoDynamicImage *)GC_MALLOC (sizeof (MonoDynamicImage));
305 image = g_new0 (MonoDynamicImage, 1);
308 mono_profiler_module_event (&image->image, MONO_PROFILE_START_LOAD);
310 /*g_print ("created image %p\n", image);*/
311 /* keep in sync with image.c */
312 image->image.name = assembly_name;
313 image->image.assembly_name = image->image.name; /* they may be different */
314 image->image.module_name = module_name;
315 image->image.version = g_strdup (version);
316 image->image.md_version_major = 1;
317 image->image.md_version_minor = 1;
318 image->image.dynamic = TRUE;
320 image->image.references = g_new0 (MonoAssembly*, 1);
321 image->image.references [0] = NULL;
323 mono_image_init (&image->image);
325 image->token_fixups = mono_g_hash_table_new_type ((GHashFunc)mono_object_hash, NULL, MONO_HASH_KEY_GC, MONO_ROOT_SOURCE_REFLECTION, "dynamic module token fixups table");
326 image->method_to_table_idx = g_hash_table_new (NULL, NULL);
327 image->field_to_table_idx = g_hash_table_new (NULL, NULL);
328 image->method_aux_hash = g_hash_table_new (NULL, NULL);
329 image->vararg_aux_hash = g_hash_table_new (NULL, NULL);
330 image->handleref = g_hash_table_new (NULL, NULL);
331 image->handleref_managed = mono_g_hash_table_new_type ((GHashFunc)mono_object_hash, NULL, MONO_HASH_KEY_GC, MONO_ROOT_SOURCE_REFLECTION, "dynamic module reference-to-token table");
332 image->tokens = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_VALUE_GC, MONO_ROOT_SOURCE_REFLECTION, "dynamic module tokens table");
333 image->generic_def_objects = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_VALUE_GC, MONO_ROOT_SOURCE_REFLECTION, "dynamic module generic definitions table");
334 image->typespec = g_hash_table_new ((GHashFunc)mono_metadata_type_hash, (GCompareFunc)mono_metadata_type_equal);
335 image->typeref = g_hash_table_new ((GHashFunc)mono_metadata_type_hash, (GCompareFunc)mono_metadata_type_equal);
336 image->blob_cache = g_hash_table_new ((GHashFunc)mono_blob_entry_hash, (GCompareFunc)mono_blob_entry_equal);
337 image->gen_params = g_ptr_array_new ();
338 image->remapped_tokens = mono_g_hash_table_new_type (NULL, NULL, MONO_HASH_VALUE_GC, MONO_ROOT_SOURCE_REFLECTION, "dynamic module remapped tokens table");
340 /*g_print ("string heap create for image %p (%s)\n", image, module_name);*/
341 string_heap_init (&image->sheap);
342 mono_dynstream_add_data (&image->us, "", 1);
343 mono_dynamic_image_add_to_blob_cached (image, (char*) "", 1, NULL, 0);
344 /* import tables... */
345 mono_dynstream_add_data (&image->code, (char*)entrycode, sizeof (entrycode));
346 image->iat_offset = mono_dynstream_add_zero (&image->code, 8); /* two IAT entries */
347 image->idt_offset = mono_dynstream_add_zero (&image->code, 2 * sizeof (MonoIDT)); /* two IDT entries */
348 image->imp_names_offset = mono_dynstream_add_zero (&image->code, 2); /* flags for name entry */
349 mono_dynstream_add_data (&image->code, "_CorExeMain", 12);
350 mono_dynstream_add_data (&image->code, "mscoree.dll", 12);
351 image->ilt_offset = mono_dynstream_add_zero (&image->code, 8); /* two ILT entries */
352 mono_dynstream_data_align (&image->code);
354 image->cli_header_offset = mono_dynstream_add_zero (&image->code, sizeof (MonoCLIHeader));
356 for (i=0; i < MONO_TABLE_NUM; ++i) {
357 image->tables [i].next_idx = 1;
358 image->tables [i].columns = table_sizes [i];
361 image->image.assembly = (MonoAssembly*)assembly;
362 image->run = assembly->run;
363 image->save = assembly->save;
364 image->pe_kind = 0x1; /* ILOnly */
365 image->machine = 0x14c; /* I386 */
367 mono_profiler_module_loaded (&image->image, MONO_PROFILE_OK);
369 dynamic_images_lock ();
372 dynamic_images = g_ptr_array_new ();
374 g_ptr_array_add (dynamic_images, image);
376 dynamic_images_unlock ();
380 #else /* DISABLE_REFLECTION_EMIT */
382 mono_dynamic_image_create (MonoDynamicAssembly *assembly, char *assembly_name, char *module_name)
384 g_assert_not_reached ();
387 #endif /* DISABLE_REFLECTION_EMIT */
390 mono_dynamic_image_add_to_blob_cached (MonoDynamicImage *assembly, char *b1, int s1, char *b2, int s2)
392 MONO_REQ_GC_NEUTRAL_MODE;
396 gpointer oldkey, oldval;
398 copy = (char *)g_malloc (s1+s2);
399 memcpy (copy, b1, s1);
400 memcpy (copy + s1, b2, s2);
401 if (g_hash_table_lookup_extended (assembly->blob_cache, copy, &oldkey, &oldval)) {
403 idx = GPOINTER_TO_UINT (oldval);
405 idx = mono_dynstream_add_data (&assembly->blob, b1, s1);
406 mono_dynstream_add_data (&assembly->blob, b2, s2);
407 g_hash_table_insert (assembly->blob_cache, copy, GUINT_TO_POINTER (idx));
413 mono_dynimage_alloc_table (MonoDynamicTable *table, guint nrows)
415 MONO_REQ_GC_NEUTRAL_MODE;
418 g_assert (table->columns);
419 if (nrows + 1 >= table->alloc_rows) {
420 while (nrows + 1 >= table->alloc_rows) {
421 if (table->alloc_rows == 0)
422 table->alloc_rows = 16;
424 table->alloc_rows *= 2;
427 table->values = (guint32 *)g_renew (guint32, table->values, (table->alloc_rows) * table->columns);
433 free_blob_cache_entry (gpointer key, gpointer val, gpointer user_data)
439 release_hashtable (MonoGHashTable **hash)
442 mono_g_hash_table_destroy (*hash);
448 mono_dynamic_image_release_gc_roots (MonoDynamicImage *image)
450 release_hashtable (&image->token_fixups);
451 release_hashtable (&image->handleref_managed);
452 release_hashtable (&image->tokens);
453 release_hashtable (&image->remapped_tokens);
454 release_hashtable (&image->generic_def_objects);
457 // Free dynamic image pass one: Free resources but not image itself
459 mono_dynamic_image_free (MonoDynamicImage *image)
461 MonoDynamicImage *di = image;
466 g_hash_table_destroy (di->typespec);
468 g_hash_table_destroy (di->typeref);
470 g_hash_table_destroy (di->handleref);
471 if (di->handleref_managed)
472 mono_g_hash_table_destroy (di->handleref_managed);
474 mono_g_hash_table_destroy (di->tokens);
475 if (di->remapped_tokens)
476 mono_g_hash_table_destroy (di->remapped_tokens);
477 if (di->generic_def_objects)
478 mono_g_hash_table_destroy (di->generic_def_objects);
479 if (di->blob_cache) {
480 g_hash_table_foreach (di->blob_cache, free_blob_cache_entry, NULL);
481 g_hash_table_destroy (di->blob_cache);
483 if (di->standalonesig_cache)
484 g_hash_table_destroy (di->standalonesig_cache);
485 for (list = di->array_methods; list; list = list->next) {
486 ArrayMethod *am = (ArrayMethod *)list->data;
487 mono_sre_array_method_free (am);
489 g_list_free (di->array_methods);
490 if (di->gen_params) {
491 for (i = 0; i < di->gen_params->len; i++) {
492 GenericParamTableEntry *entry = (GenericParamTableEntry *)g_ptr_array_index (di->gen_params, i);
493 mono_sre_generic_param_table_entry_free (entry);
495 g_ptr_array_free (di->gen_params, TRUE);
497 if (di->token_fixups)
498 mono_g_hash_table_destroy (di->token_fixups);
499 if (di->method_to_table_idx)
500 g_hash_table_destroy (di->method_to_table_idx);
501 if (di->field_to_table_idx)
502 g_hash_table_destroy (di->field_to_table_idx);
503 if (di->method_aux_hash)
504 g_hash_table_destroy (di->method_aux_hash);
505 if (di->vararg_aux_hash)
506 g_hash_table_destroy (di->vararg_aux_hash);
507 g_free (di->strong_name);
508 g_free (di->win32_res);
510 g_free (di->public_key);
512 /*g_print ("string heap destroy for image %p\n", di);*/
513 mono_dynamic_stream_reset (&di->sheap);
514 mono_dynamic_stream_reset (&di->code);
515 mono_dynamic_stream_reset (&di->resources);
516 mono_dynamic_stream_reset (&di->us);
517 mono_dynamic_stream_reset (&di->blob);
518 mono_dynamic_stream_reset (&di->tstream);
519 mono_dynamic_stream_reset (&di->guid);
520 for (i = 0; i < MONO_TABLE_NUM; ++i) {
521 g_free (di->tables [i].values);
524 dynamic_images_lock ();
527 g_ptr_array_remove (dynamic_images, di);
529 dynamic_images_unlock ();
532 // Free dynamic image pass two: Free image itself (might never get called in some debug modes)
534 mono_dynamic_image_free_image (MonoDynamicImage *image)
536 /* See create_dynamic_mono_image () */
538 /* Allocated using GC_MALLOC */