2 * method-builder.c: Functions for creating IL methods at runtime.
5 * Paolo Molaro (lupus@ximian.com)
7 * Copyright 2002-2003 Ximian, Inc (http://www.ximian.com)
8 * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
13 #include "mono/metadata/abi-details.h"
14 #include "mono/metadata/method-builder.h"
15 #include "mono/metadata/tabledefs.h"
16 #include "mono/metadata/exception.h"
17 #include "mono/metadata/appdomain.h"
18 #include "mono/metadata/debug-helpers.h"
19 #include "mono/metadata/metadata-internals.h"
20 #include "mono/metadata/domain-internals.h"
24 /* #define DEBUG_RUNTIME_CODE */
26 #define OPDEF(a,b,c,d,e,f,g,h,i,j) \
30 #include "mono/cil/opcode.def"
35 #ifdef DEBUG_RUNTIME_CODE
37 indenter (MonoDisHelper *dh, MonoMethod *method, guint32 ip_offset)
39 return g_strdup (" ");
42 static MonoDisHelper marshal_dh = {
52 static MonoMethodBuilder *
53 mono_mb_new_base (MonoClass *klass, MonoWrapperType type)
55 MonoMethodBuilder *mb;
58 g_assert (klass != NULL);
60 mb = g_new0 (MonoMethodBuilder, 1);
62 mb->method = m = (MonoMethod *)g_new0 (MonoMethodWrapper, 1);
66 m->wrapper_type = type;
70 mb->code = g_malloc (mb->code_size);
72 /* placeholder for the wrapper always at index 1 */
73 mono_mb_add_data (mb, NULL);
79 mono_mb_new_no_dup_name (MonoClass *klass, const char *name, MonoWrapperType type)
81 MonoMethodBuilder *mb = mono_mb_new_base (klass, type);
82 mb->name = (char*)name;
83 mb->no_dup_name = TRUE;
88 mono_mb_new (MonoClass *klass, const char *name, MonoWrapperType type)
90 MonoMethodBuilder *mb = mono_mb_new_base (klass, type);
91 mb->name = g_strdup (name);
96 mono_mb_free (MonoMethodBuilder *mb)
99 g_list_free (mb->locals_list);
102 if (!mb->no_dup_name)
108 if (!mb->no_dup_name)
115 * mono_mb_create_method:
117 * Create a MonoMethod from this method builder.
118 * Returns: the newly created method.
122 mono_mb_create_method (MonoMethodBuilder *mb, MonoMethodSignature *signature, int max_stack)
125 MonoMethodHeader *header;
127 MonoMethodWrapper *mw;
133 g_assert (mb != NULL);
135 image = mb->method->klass->image;
140 mw = (MonoMethodWrapper*)method;
142 method->name = mb->name;
143 method->dynamic = TRUE;
145 mw->header = header = (MonoMethodHeader *)
146 g_malloc0 (MONO_SIZEOF_METHOD_HEADER + mb->locals * sizeof (MonoType *));
148 header->code = mb->code;
150 for (i = 0, l = mb->locals_list; l; l = l->next, i++) {
151 header->locals [i] = mono_metadata_type_dup (NULL, (MonoType*)l->data);
156 /* Realloc the method info into a mempool */
158 method = mono_image_alloc0 (image, sizeof (MonoMethodWrapper));
159 memcpy (method, mb->method, sizeof (MonoMethodWrapper));
160 mw = (MonoMethodWrapper*) method;
163 method->name = mb->name;
165 method->name = mono_image_strdup (image, mb->name);
168 mw->header = header = (MonoMethodHeader *)
169 mono_image_alloc0 (image, MONO_SIZEOF_METHOD_HEADER + mb->locals * sizeof (MonoType *));
171 header->code = mono_image_alloc (image, mb->pos);
172 memcpy ((char*)header->code, mb->code, mb->pos);
174 for (i = 0, l = mb->locals_list; l; l = l->next, i++) {
175 header->locals [i] = (MonoType *)l->data;
180 method->signature = signature;
181 if (!signature->hasthis)
182 method->flags |= METHOD_ATTRIBUTE_STATIC;
188 header->max_stack = max_stack;
190 header->code_size = mb->pos;
191 header->num_locals = mb->locals;
192 header->init_locals = TRUE;
194 header->num_clauses = mb->num_clauses;
195 header->clauses = mb->clauses;
197 method->skip_visibility = mb->skip_visibility;
200 i = g_list_length (mw->method_data);
204 l = g_list_reverse (mw->method_data);
205 if (method_is_dynamic (method))
206 data = g_malloc (sizeof (gpointer) * (i + 1));
208 data = mono_image_alloc (image, sizeof (gpointer) * (i + 1));
209 /* store the size in the first element */
210 data [0] = GUINT_TO_POINTER (i);
212 for (tmp = l; tmp; tmp = tmp->next) {
213 data [i++] = tmp->data;
217 mw->method_data = data;
222 static int total_code = 0;
223 static int total_alloc = 0;
224 total_code += mb->pos;
225 total_alloc += mb->code_size;
226 g_print ("code size: %d of %d (allocated: %d)\n", mb->pos, total_code, total_alloc);
229 #ifdef DEBUG_RUNTIME_CODE
230 printf ("RUNTIME CODE FOR %s\n", mono_method_full_name (method, TRUE));
231 printf ("%s\n", mono_disasm_code (&marshal_dh, method, mb->code, mb->code + mb->pos));
234 if (mb->param_names) {
235 char **param_names = mono_image_alloc0 (image, signature->param_count * sizeof (gpointer));
236 for (i = 0; i < signature->param_count; ++i)
237 param_names [i] = mono_image_strdup (image, mb->param_names [i]);
239 mono_image_lock (image);
240 if (!image->wrapper_param_names)
241 image->wrapper_param_names = g_hash_table_new (NULL, NULL);
242 g_hash_table_insert (image->wrapper_param_names, method, param_names);
243 mono_image_unlock (image);
251 mono_mb_add_data (MonoMethodBuilder *mb, gpointer data)
253 MonoMethodWrapper *mw;
255 g_assert (mb != NULL);
257 mw = (MonoMethodWrapper *)mb->method;
259 /* one O(n) is enough */
260 mw->method_data = g_list_prepend (mw->method_data, data);
262 return g_list_length (mw->method_data);
268 mono_mb_add_local (MonoMethodBuilder *mb, MonoType *type)
272 g_assert (mb != NULL);
273 g_assert (type != NULL);
276 mb->locals_list = g_list_append (mb->locals_list, type);
283 mono_mb_patch_addr (MonoMethodBuilder *mb, int pos, int value)
285 mb->code [pos] = value & 0xff;
286 mb->code [pos + 1] = (value >> 8) & 0xff;
287 mb->code [pos + 2] = (value >> 16) & 0xff;
288 mb->code [pos + 3] = (value >> 24) & 0xff;
292 mono_mb_patch_addr_s (MonoMethodBuilder *mb, int pos, gint8 value)
294 *((gint8 *)(&mb->code [pos])) = value;
298 mono_mb_emit_byte (MonoMethodBuilder *mb, guint8 op)
300 if (mb->pos >= mb->code_size) {
301 mb->code_size += mb->code_size >> 1;
302 mb->code = g_realloc (mb->code, mb->code_size);
305 mb->code [mb->pos++] = op;
309 mono_mb_emit_ldflda (MonoMethodBuilder *mb, gint32 offset)
311 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
312 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
315 mono_mb_emit_icon (mb, offset);
316 mono_mb_emit_byte (mb, CEE_ADD);
321 mono_mb_emit_i4 (MonoMethodBuilder *mb, gint32 data)
323 if ((mb->pos + 4) >= mb->code_size) {
324 mb->code_size += mb->code_size >> 1;
325 mb->code = g_realloc (mb->code, mb->code_size);
328 mono_mb_patch_addr (mb, mb->pos, data);
333 mono_mb_emit_i2 (MonoMethodBuilder *mb, gint16 data)
335 if ((mb->pos + 2) >= mb->code_size) {
336 mb->code_size += mb->code_size >> 1;
337 mb->code = g_realloc (mb->code, mb->code_size);
340 mb->code [mb->pos] = data & 0xff;
341 mb->code [mb->pos + 1] = (data >> 8) & 0xff;
346 mono_mb_emit_op (MonoMethodBuilder *mb, guint8 op, gpointer data)
348 mono_mb_emit_byte (mb, op);
349 mono_mb_emit_i4 (mb, mono_mb_add_data (mb, data));
353 mono_mb_emit_ldstr (MonoMethodBuilder *mb, char *str)
355 mono_mb_emit_op (mb, CEE_LDSTR, str);
359 mono_mb_emit_ldarg (MonoMethodBuilder *mb, guint argnum)
362 mono_mb_emit_byte (mb, CEE_LDARG_0 + argnum);
363 } else if (argnum < 256) {
364 mono_mb_emit_byte (mb, CEE_LDARG_S);
365 mono_mb_emit_byte (mb, argnum);
367 mono_mb_emit_byte (mb, CEE_PREFIX1);
368 mono_mb_emit_byte (mb, CEE_LDARG);
369 mono_mb_emit_i2 (mb, argnum);
374 mono_mb_emit_ldarg_addr (MonoMethodBuilder *mb, guint argnum)
377 mono_mb_emit_byte (mb, CEE_LDARGA_S);
378 mono_mb_emit_byte (mb, argnum);
380 mono_mb_emit_byte (mb, CEE_PREFIX1);
381 mono_mb_emit_byte (mb, CEE_LDARGA);
382 mono_mb_emit_i2 (mb, argnum);
387 mono_mb_emit_ldloc_addr (MonoMethodBuilder *mb, guint locnum)
390 mono_mb_emit_byte (mb, CEE_LDLOCA_S);
391 mono_mb_emit_byte (mb, locnum);
393 mono_mb_emit_byte (mb, CEE_PREFIX1);
394 mono_mb_emit_byte (mb, CEE_LDLOCA);
395 mono_mb_emit_i2 (mb, locnum);
400 mono_mb_emit_ldloc (MonoMethodBuilder *mb, guint num)
403 mono_mb_emit_byte (mb, CEE_LDLOC_0 + num);
404 } else if (num < 256) {
405 mono_mb_emit_byte (mb, CEE_LDLOC_S);
406 mono_mb_emit_byte (mb, num);
408 mono_mb_emit_byte (mb, CEE_PREFIX1);
409 mono_mb_emit_byte (mb, CEE_LDLOC);
410 mono_mb_emit_i2 (mb, num);
415 mono_mb_emit_stloc (MonoMethodBuilder *mb, guint num)
418 mono_mb_emit_byte (mb, CEE_STLOC_0 + num);
419 } else if (num < 256) {
420 mono_mb_emit_byte (mb, CEE_STLOC_S);
421 mono_mb_emit_byte (mb, num);
423 mono_mb_emit_byte (mb, CEE_PREFIX1);
424 mono_mb_emit_byte (mb, CEE_STLOC);
425 mono_mb_emit_i2 (mb, num);
430 mono_mb_emit_icon (MonoMethodBuilder *mb, gint32 value)
432 if (value >= -1 && value < 8) {
433 mono_mb_emit_byte (mb, CEE_LDC_I4_0 + value);
434 } else if (value >= -128 && value <= 127) {
435 mono_mb_emit_byte (mb, CEE_LDC_I4_S);
436 mono_mb_emit_byte (mb, value);
438 mono_mb_emit_byte (mb, CEE_LDC_I4);
439 mono_mb_emit_i4 (mb, value);
444 mono_mb_get_label (MonoMethodBuilder *mb)
450 mono_mb_get_pos (MonoMethodBuilder *mb)
456 mono_mb_emit_branch (MonoMethodBuilder *mb, guint8 op)
459 mono_mb_emit_byte (mb, op);
461 mono_mb_emit_i4 (mb, 0);
466 mono_mb_emit_short_branch (MonoMethodBuilder *mb, guint8 op)
469 mono_mb_emit_byte (mb, op);
471 mono_mb_emit_byte (mb, 0);
477 mono_mb_emit_branch_label (MonoMethodBuilder *mb, guint8 op, guint32 label)
479 mono_mb_emit_byte (mb, op);
480 mono_mb_emit_i4 (mb, label - (mb->pos + 4));
484 mono_mb_patch_branch (MonoMethodBuilder *mb, guint32 pos)
486 mono_mb_patch_addr (mb, pos, mb->pos - (pos + 4));
490 mono_mb_patch_short_branch (MonoMethodBuilder *mb, guint32 pos)
492 mono_mb_patch_addr_s (mb, pos, mb->pos - (pos + 1));
496 mono_mb_emit_ptr (MonoMethodBuilder *mb, gpointer ptr)
498 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
499 mono_mb_emit_op (mb, CEE_MONO_LDPTR, ptr);
503 mono_mb_emit_calli (MonoMethodBuilder *mb, MonoMethodSignature *sig)
505 mono_mb_emit_op (mb, CEE_CALLI, sig);
509 mono_mb_emit_managed_call (MonoMethodBuilder *mb, MonoMethod *method, MonoMethodSignature *opt_sig)
511 mono_mb_emit_op (mb, CEE_CALL, method);
515 mono_mb_emit_native_call (MonoMethodBuilder *mb, MonoMethodSignature *sig, gpointer func)
517 mono_mb_emit_ptr (mb, func);
518 mono_mb_emit_calli (mb, sig);
522 mono_mb_emit_icall (MonoMethodBuilder *mb, gpointer func)
524 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
525 mono_mb_emit_op (mb, CEE_MONO_ICALL, func);
529 mono_mb_emit_exception_full (MonoMethodBuilder *mb, const char *exc_nspace, const char *exc_name, const char *msg)
531 MonoMethod *ctor = NULL;
533 MonoClass *mme = mono_class_from_name (mono_defaults.corlib, exc_nspace, exc_name);
534 mono_class_init (mme);
535 ctor = mono_class_get_method_from_name (mme, ".ctor", 0);
537 mono_mb_emit_op (mb, CEE_NEWOBJ, ctor);
539 mono_mb_emit_byte (mb, CEE_DUP);
540 mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoException, message));
541 mono_mb_emit_ldstr (mb, (char*)msg);
542 mono_mb_emit_byte (mb, CEE_STIND_REF);
544 mono_mb_emit_byte (mb, CEE_THROW);
548 mono_mb_emit_exception (MonoMethodBuilder *mb, const char *exc_name, const char *msg)
550 mono_mb_emit_exception_full (mb, "System", exc_name, msg);
554 mono_mb_emit_add_to_local (MonoMethodBuilder *mb, guint16 local, gint32 incr)
556 mono_mb_emit_ldloc (mb, local);
557 mono_mb_emit_icon (mb, incr);
558 mono_mb_emit_byte (mb, CEE_ADD);
559 mono_mb_emit_stloc (mb, local);
563 mono_mb_set_clauses (MonoMethodBuilder *mb, int num_clauses, MonoExceptionClause *clauses)
565 mb->num_clauses = num_clauses;
566 mb->clauses = clauses;
570 * mono_mb_set_param_names:
572 * PARAM_NAMES should have length equal to the sig->param_count, the caller retains
573 * ownership of the array, and its entries.
576 mono_mb_set_param_names (MonoMethodBuilder *mb, const char **param_names)
578 mb->param_names = param_names;
581 #endif /* DISABLE_JIT */