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/method-builder.h"
14 #include "mono/metadata/tabledefs.h"
15 #include "mono/metadata/exception.h"
16 #include "mono/metadata/appdomain.h"
17 #include "mono/metadata/debug-helpers.h"
18 #include "mono/metadata/metadata-internals.h"
19 #include "mono/metadata/domain-internals.h"
23 /* #define DEBUG_RUNTIME_CODE */
25 #define OPDEF(a,b,c,d,e,f,g,h,i,j) \
29 #include "mono/cil/opcode.def"
34 #ifdef DEBUG_RUNTIME_CODE
36 indenter (MonoDisHelper *dh, MonoMethod *method, guint32 ip_offset)
38 return g_strdup (" ");
41 static MonoDisHelper marshal_dh = {
51 static MonoMethodBuilder *
52 mono_mb_new_base (MonoClass *klass, MonoWrapperType type)
54 MonoMethodBuilder *mb;
57 g_assert (klass != NULL);
59 mb = g_new0 (MonoMethodBuilder, 1);
61 mb->method = m = (MonoMethod *)g_new0 (MonoMethodWrapper, 1);
65 m->wrapper_type = type;
69 mb->code = g_malloc (mb->code_size);
71 /* placeholder for the wrapper always at index 1 */
72 mono_mb_add_data (mb, NULL);
78 mono_mb_new_no_dup_name (MonoClass *klass, const char *name, MonoWrapperType type)
80 MonoMethodBuilder *mb = mono_mb_new_base (klass, type);
81 mb->name = (char*)name;
82 mb->no_dup_name = TRUE;
87 mono_mb_new (MonoClass *klass, const char *name, MonoWrapperType type)
89 MonoMethodBuilder *mb = mono_mb_new_base (klass, type);
90 mb->name = g_strdup (name);
95 mono_mb_free (MonoMethodBuilder *mb)
98 g_list_free (mb->locals_list);
101 if (!mb->no_dup_name)
107 if (!mb->no_dup_name)
114 * mono_mb_create_method:
116 * Create a MonoMethod from this method builder.
117 * Returns: the newly created method.
121 mono_mb_create_method (MonoMethodBuilder *mb, MonoMethodSignature *signature, int max_stack)
124 MonoMethodHeader *header;
126 MonoMethodWrapper *mw;
132 g_assert (mb != NULL);
134 image = mb->method->klass->image;
139 mw = (MonoMethodWrapper*)method;
141 method->name = mb->name;
142 method->dynamic = TRUE;
144 mw->header = header = (MonoMethodHeader *)
145 g_malloc0 (MONO_SIZEOF_METHOD_HEADER + mb->locals * sizeof (MonoType *));
147 header->code = mb->code;
149 for (i = 0, l = mb->locals_list; l; l = l->next, i++) {
150 header->locals [i] = mono_metadata_type_dup (NULL, (MonoType*)l->data);
155 /* Realloc the method info into a mempool */
157 method = mono_image_alloc0 (image, sizeof (MonoMethodWrapper));
158 memcpy (method, mb->method, sizeof (MonoMethodWrapper));
159 mw = (MonoMethodWrapper*) method;
162 method->name = mb->name;
164 method->name = mono_image_strdup (image, mb->name);
167 mw->header = header = (MonoMethodHeader *)
168 mono_image_alloc0 (image, MONO_SIZEOF_METHOD_HEADER + mb->locals * sizeof (MonoType *));
170 header->code = mono_image_alloc (image, mb->pos);
171 memcpy ((char*)header->code, mb->code, mb->pos);
173 for (i = 0, l = mb->locals_list; l; l = l->next, i++) {
174 header->locals [i] = (MonoType *)l->data;
179 method->signature = signature;
180 if (!signature->hasthis)
181 method->flags |= METHOD_ATTRIBUTE_STATIC;
187 header->max_stack = max_stack;
189 header->code_size = mb->pos;
190 header->num_locals = mb->locals;
191 header->init_locals = TRUE;
193 header->num_clauses = mb->num_clauses;
194 header->clauses = mb->clauses;
196 method->skip_visibility = mb->skip_visibility;
199 i = g_list_length (mw->method_data);
203 l = g_list_reverse (mw->method_data);
205 data = g_malloc (sizeof (gpointer) * (i + 1));
207 data = mono_image_alloc (image, sizeof (gpointer) * (i + 1));
208 /* store the size in the first element */
209 data [0] = GUINT_TO_POINTER (i);
211 for (tmp = l; tmp; tmp = tmp->next) {
212 data [i++] = tmp->data;
216 mw->method_data = data;
221 static int total_code = 0;
222 static int total_alloc = 0;
223 total_code += mb->pos;
224 total_alloc += mb->code_size;
225 g_print ("code size: %d of %d (allocated: %d)\n", mb->pos, total_code, total_alloc);
228 #ifdef DEBUG_RUNTIME_CODE
229 printf ("RUNTIME CODE FOR %s\n", mono_method_full_name (method, TRUE));
230 printf ("%s\n", mono_disasm_code (&marshal_dh, method, mb->code, mb->code + mb->pos));
233 if (mb->param_names) {
234 char **param_names = mono_image_alloc0 (image, signature->param_count * sizeof (gpointer));
235 for (i = 0; i < signature->param_count; ++i)
236 param_names [i] = mono_image_strdup (image, mb->param_names [i]);
238 mono_image_lock (image);
239 if (!image->wrapper_param_names)
240 image->wrapper_param_names = g_hash_table_new (NULL, NULL);
241 g_hash_table_insert (image->wrapper_param_names, method, param_names);
242 mono_image_unlock (image);
250 mono_mb_add_data (MonoMethodBuilder *mb, gpointer data)
252 MonoMethodWrapper *mw;
254 g_assert (mb != NULL);
256 mw = (MonoMethodWrapper *)mb->method;
258 /* one O(n) is enough */
259 mw->method_data = g_list_prepend (mw->method_data, data);
261 return g_list_length (mw->method_data);
267 mono_mb_add_local (MonoMethodBuilder *mb, MonoType *type)
271 g_assert (mb != NULL);
272 g_assert (type != NULL);
275 mb->locals_list = g_list_append (mb->locals_list, type);
282 mono_mb_patch_addr (MonoMethodBuilder *mb, int pos, int value)
284 mb->code [pos] = value & 0xff;
285 mb->code [pos + 1] = (value >> 8) & 0xff;
286 mb->code [pos + 2] = (value >> 16) & 0xff;
287 mb->code [pos + 3] = (value >> 24) & 0xff;
291 mono_mb_patch_addr_s (MonoMethodBuilder *mb, int pos, gint8 value)
293 *((gint8 *)(&mb->code [pos])) = value;
297 mono_mb_emit_byte (MonoMethodBuilder *mb, guint8 op)
299 if (mb->pos >= mb->code_size) {
300 mb->code_size += mb->code_size >> 1;
301 mb->code = g_realloc (mb->code, mb->code_size);
304 mb->code [mb->pos++] = op;
308 mono_mb_emit_ldflda (MonoMethodBuilder *mb, gint32 offset)
310 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
311 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
314 mono_mb_emit_icon (mb, offset);
315 mono_mb_emit_byte (mb, CEE_ADD);
320 mono_mb_emit_i4 (MonoMethodBuilder *mb, gint32 data)
322 if ((mb->pos + 4) >= mb->code_size) {
323 mb->code_size += mb->code_size >> 1;
324 mb->code = g_realloc (mb->code, mb->code_size);
327 mono_mb_patch_addr (mb, mb->pos, data);
332 mono_mb_emit_i2 (MonoMethodBuilder *mb, gint16 data)
334 if ((mb->pos + 2) >= mb->code_size) {
335 mb->code_size += mb->code_size >> 1;
336 mb->code = g_realloc (mb->code, mb->code_size);
339 mb->code [mb->pos] = data & 0xff;
340 mb->code [mb->pos + 1] = (data >> 8) & 0xff;
345 mono_mb_emit_op (MonoMethodBuilder *mb, guint8 op, gpointer data)
347 mono_mb_emit_byte (mb, op);
348 mono_mb_emit_i4 (mb, mono_mb_add_data (mb, data));
352 mono_mb_emit_ldstr (MonoMethodBuilder *mb, char *str)
354 mono_mb_emit_op (mb, CEE_LDSTR, str);
358 mono_mb_emit_ldarg (MonoMethodBuilder *mb, guint argnum)
361 mono_mb_emit_byte (mb, CEE_LDARG_0 + argnum);
362 } else if (argnum < 256) {
363 mono_mb_emit_byte (mb, CEE_LDARG_S);
364 mono_mb_emit_byte (mb, argnum);
366 mono_mb_emit_byte (mb, CEE_PREFIX1);
367 mono_mb_emit_byte (mb, CEE_LDARG);
368 mono_mb_emit_i2 (mb, argnum);
373 mono_mb_emit_ldarg_addr (MonoMethodBuilder *mb, guint argnum)
376 mono_mb_emit_byte (mb, CEE_LDARGA_S);
377 mono_mb_emit_byte (mb, argnum);
379 mono_mb_emit_byte (mb, CEE_PREFIX1);
380 mono_mb_emit_byte (mb, CEE_LDARGA);
381 mono_mb_emit_i2 (mb, argnum);
386 mono_mb_emit_ldloc_addr (MonoMethodBuilder *mb, guint locnum)
389 mono_mb_emit_byte (mb, CEE_LDLOCA_S);
390 mono_mb_emit_byte (mb, locnum);
392 mono_mb_emit_byte (mb, CEE_PREFIX1);
393 mono_mb_emit_byte (mb, CEE_LDLOCA);
394 mono_mb_emit_i2 (mb, locnum);
399 mono_mb_emit_ldloc (MonoMethodBuilder *mb, guint num)
402 mono_mb_emit_byte (mb, CEE_LDLOC_0 + num);
403 } else if (num < 256) {
404 mono_mb_emit_byte (mb, CEE_LDLOC_S);
405 mono_mb_emit_byte (mb, num);
407 mono_mb_emit_byte (mb, CEE_PREFIX1);
408 mono_mb_emit_byte (mb, CEE_LDLOC);
409 mono_mb_emit_i2 (mb, num);
414 mono_mb_emit_stloc (MonoMethodBuilder *mb, guint num)
417 mono_mb_emit_byte (mb, CEE_STLOC_0 + num);
418 } else if (num < 256) {
419 mono_mb_emit_byte (mb, CEE_STLOC_S);
420 mono_mb_emit_byte (mb, num);
422 mono_mb_emit_byte (mb, CEE_PREFIX1);
423 mono_mb_emit_byte (mb, CEE_STLOC);
424 mono_mb_emit_i2 (mb, num);
429 mono_mb_emit_icon (MonoMethodBuilder *mb, gint32 value)
431 if (value >= -1 && value < 8) {
432 mono_mb_emit_byte (mb, CEE_LDC_I4_0 + value);
433 } else if (value >= -128 && value <= 127) {
434 mono_mb_emit_byte (mb, CEE_LDC_I4_S);
435 mono_mb_emit_byte (mb, value);
437 mono_mb_emit_byte (mb, CEE_LDC_I4);
438 mono_mb_emit_i4 (mb, value);
443 mono_mb_get_label (MonoMethodBuilder *mb)
449 mono_mb_get_pos (MonoMethodBuilder *mb)
455 mono_mb_emit_branch (MonoMethodBuilder *mb, guint8 op)
458 mono_mb_emit_byte (mb, op);
460 mono_mb_emit_i4 (mb, 0);
465 mono_mb_emit_short_branch (MonoMethodBuilder *mb, guint8 op)
468 mono_mb_emit_byte (mb, op);
470 mono_mb_emit_byte (mb, 0);
476 mono_mb_emit_branch_label (MonoMethodBuilder *mb, guint8 op, guint32 label)
478 mono_mb_emit_byte (mb, op);
479 mono_mb_emit_i4 (mb, label - (mb->pos + 4));
483 mono_mb_patch_branch (MonoMethodBuilder *mb, guint32 pos)
485 mono_mb_patch_addr (mb, pos, mb->pos - (pos + 4));
489 mono_mb_patch_short_branch (MonoMethodBuilder *mb, guint32 pos)
491 mono_mb_patch_addr_s (mb, pos, mb->pos - (pos + 1));
495 mono_mb_emit_ptr (MonoMethodBuilder *mb, gpointer ptr)
497 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
498 mono_mb_emit_op (mb, CEE_MONO_LDPTR, ptr);
502 mono_mb_emit_calli (MonoMethodBuilder *mb, MonoMethodSignature *sig)
504 mono_mb_emit_op (mb, CEE_CALLI, sig);
508 mono_mb_emit_managed_call (MonoMethodBuilder *mb, MonoMethod *method, MonoMethodSignature *opt_sig)
510 mono_mb_emit_op (mb, CEE_CALL, method);
514 mono_mb_emit_native_call (MonoMethodBuilder *mb, MonoMethodSignature *sig, gpointer func)
516 mono_mb_emit_ptr (mb, func);
517 mono_mb_emit_calli (mb, sig);
521 mono_mb_emit_icall (MonoMethodBuilder *mb, gpointer func)
523 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
524 mono_mb_emit_op (mb, CEE_MONO_ICALL, func);
528 mono_mb_emit_exception_full (MonoMethodBuilder *mb, const char *exc_nspace, const char *exc_name, const char *msg)
530 MonoMethod *ctor = NULL;
532 MonoClass *mme = mono_class_from_name (mono_defaults.corlib, exc_nspace, exc_name);
533 mono_class_init (mme);
534 ctor = mono_class_get_method_from_name (mme, ".ctor", 0);
536 mono_mb_emit_op (mb, CEE_NEWOBJ, ctor);
538 mono_mb_emit_byte (mb, CEE_DUP);
539 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoException, message));
540 mono_mb_emit_ldstr (mb, (char*)msg);
541 mono_mb_emit_byte (mb, CEE_STIND_REF);
543 mono_mb_emit_byte (mb, CEE_THROW);
547 mono_mb_emit_exception (MonoMethodBuilder *mb, const char *exc_name, const char *msg)
549 mono_mb_emit_exception_full (mb, "System", exc_name, msg);
553 mono_mb_emit_add_to_local (MonoMethodBuilder *mb, guint16 local, gint32 incr)
555 mono_mb_emit_ldloc (mb, local);
556 mono_mb_emit_icon (mb, incr);
557 mono_mb_emit_byte (mb, CEE_ADD);
558 mono_mb_emit_stloc (mb, local);
562 mono_mb_set_clauses (MonoMethodBuilder *mb, int num_clauses, MonoExceptionClause *clauses)
564 mb->num_clauses = num_clauses;
565 mb->clauses = clauses;
569 * mono_mb_set_param_names:
571 * PARAM_NAMES should have length equal to the sig->param_count, the caller retains
572 * ownership of the array, and its entries.
575 mono_mb_set_param_names (MonoMethodBuilder *mb, const char **param_names)
577 mb->param_names = param_names;
580 #endif /* DISABLE_JIT */