2 * method-builder.c: Functions for creating IL methods at runtime.
5 * Paolo Molaro (lupus@ximian.com)
7 * (C) 2002 Ximian, Inc. http://www.ximian.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;
68 mb->code = g_malloc (mb->code_size);
69 /* placeholder for the wrapper always at index 1 */
70 mono_mb_add_data (mb, NULL);
76 mono_mb_new_no_dup_name (MonoClass *klass, const char *name, MonoWrapperType type)
78 MonoMethodBuilder *mb = mono_mb_new_base (klass, type);
79 mb->name = (char*)name;
80 mb->no_dup_name = TRUE;
85 mono_mb_new (MonoClass *klass, const char *name, MonoWrapperType type)
87 MonoMethodBuilder *mb = mono_mb_new_base (klass, type);
88 mb->name = g_strdup (name);
93 mono_mb_free (MonoMethodBuilder *mb)
95 g_list_free (mb->locals_list);
106 mono_mb_add_local (MonoMethodBuilder *mb, MonoType *type)
110 g_assert (mb != NULL);
111 g_assert (type != NULL);
114 mb->locals_list = g_list_append (mb->locals_list, type);
121 * mono_mb_create_method:
123 * Create a MonoMethod from this method builder.
124 * Returns: the newly created method.
126 * LOCKING: Takes the loader lock.
129 mono_mb_create_method (MonoMethodBuilder *mb, MonoMethodSignature *signature, int max_stack)
131 MonoMethodHeader *header;
132 MonoMethodWrapper *mw;
138 g_assert (mb != NULL);
140 image = mb->method->klass->image;
146 method->name = mb->name;
147 method->dynamic = TRUE;
149 ((MonoMethodNormal *)method)->header = header = (MonoMethodHeader *)
150 g_malloc0 (sizeof (MonoMethodHeader) + mb->locals * sizeof (MonoType *));
152 header->code = mb->code;
154 for (i = 0, l = mb->locals_list; l; l = l->next, i++) {
155 header->locals [i] = mono_metadata_type_dup (NULL, (MonoType*)l->data);
158 /* Realloc the method info into a mempool */
160 method = mono_image_alloc0 (image, sizeof (MonoMethodWrapper));
161 memcpy (method, mb->method, sizeof (MonoMethodWrapper));
164 method->name = mb->name;
166 method->name = mono_image_strdup (image, mb->name);
168 ((MonoMethodNormal *)method)->header = header = (MonoMethodHeader *)
169 mono_image_alloc0 (image, sizeof (MonoMethodHeader) + 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;
182 header->max_stack = max_stack;
184 method->signature = signature;
186 header->code_size = mb->pos;
187 header->num_locals = mb->locals;
188 header->init_locals = TRUE;
190 mw = (MonoMethodWrapper*) mb->method;
191 i = g_list_length (mw->method_data);
195 l = g_list_reverse (mw->method_data);
197 data = g_malloc (sizeof (gpointer) * (i + 1));
199 data = mono_image_alloc (image, sizeof (gpointer) * (i + 1));
200 /* store the size in the first element */
201 data [0] = GUINT_TO_POINTER (i);
203 for (tmp = l; tmp; tmp = tmp->next) {
204 data [i++] = tmp->data;
208 ((MonoMethodWrapper*)method)->method_data = data;
211 static int total_code = 0;
212 static int total_alloc = 0;
213 total_code += mb->pos;
214 total_alloc += mb->code_size;
215 g_print ("code size: %d of %d (allocated: %d)\n", mb->pos, total_code, total_alloc);
218 #ifdef DEBUG_RUNTIME_CODE
219 printf ("RUNTIME CODE FOR %s\n", mono_method_full_name (method, TRUE));
220 printf ("%s\n", mono_disasm_code (&marshal_dh, method, mb->code, mb->code + mb->pos));
223 mono_loader_unlock ();
228 mono_mb_add_data (MonoMethodBuilder *mb, gpointer data)
230 MonoMethodWrapper *mw;
232 g_assert (mb != NULL);
234 mw = (MonoMethodWrapper *)mb->method;
236 /* one O(n) is enough */
237 mw->method_data = g_list_prepend (mw->method_data, data);
239 return g_list_length (mw->method_data);
243 mono_mb_patch_addr (MonoMethodBuilder *mb, int pos, int value)
245 mb->code [pos] = value & 0xff;
246 mb->code [pos + 1] = (value >> 8) & 0xff;
247 mb->code [pos + 2] = (value >> 16) & 0xff;
248 mb->code [pos + 3] = (value >> 24) & 0xff;
252 mono_mb_patch_addr_s (MonoMethodBuilder *mb, int pos, gint8 value)
254 *((gint8 *)(&mb->code [pos])) = value;
258 mono_mb_emit_byte (MonoMethodBuilder *mb, guint8 op)
260 if (mb->pos >= mb->code_size) {
261 mb->code_size += mb->code_size >> 1;
262 mb->code = g_realloc (mb->code, mb->code_size);
265 mb->code [mb->pos++] = op;
269 mono_mb_emit_ldflda (MonoMethodBuilder *mb, gint32 offset)
271 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
272 mono_mb_emit_byte (mb, CEE_MONO_OBJADDR);
275 mono_mb_emit_icon (mb, offset);
276 mono_mb_emit_byte (mb, CEE_ADD);
281 mono_mb_emit_i4 (MonoMethodBuilder *mb, gint32 data)
283 if ((mb->pos + 4) >= mb->code_size) {
284 mb->code_size += mb->code_size >> 1;
285 mb->code = g_realloc (mb->code, mb->code_size);
288 mono_mb_patch_addr (mb, mb->pos, data);
293 mono_mb_emit_i2 (MonoMethodBuilder *mb, gint16 data)
295 if ((mb->pos + 2) >= mb->code_size) {
296 mb->code_size += mb->code_size >> 1;
297 mb->code = g_realloc (mb->code, mb->code_size);
300 mb->code [mb->pos] = data & 0xff;
301 mb->code [mb->pos + 1] = (data >> 8) & 0xff;
306 mono_mb_emit_op (MonoMethodBuilder *mb, guint8 op, gpointer data)
308 mono_mb_emit_byte (mb, op);
309 mono_mb_emit_i4 (mb, mono_mb_add_data (mb, data));
313 mono_mb_emit_ldstr (MonoMethodBuilder *mb, char *str)
315 mono_mb_emit_op (mb, CEE_LDSTR, str);
319 mono_mb_emit_ldarg (MonoMethodBuilder *mb, guint argnum)
322 mono_mb_emit_byte (mb, CEE_LDARG_0 + argnum);
323 } else if (argnum < 256) {
324 mono_mb_emit_byte (mb, CEE_LDARG_S);
325 mono_mb_emit_byte (mb, argnum);
327 mono_mb_emit_byte (mb, CEE_PREFIX1);
328 mono_mb_emit_byte (mb, CEE_LDARG);
329 mono_mb_emit_i2 (mb, argnum);
334 mono_mb_emit_ldarg_addr (MonoMethodBuilder *mb, guint argnum)
337 mono_mb_emit_byte (mb, CEE_LDARGA_S);
338 mono_mb_emit_byte (mb, argnum);
340 mono_mb_emit_byte (mb, CEE_PREFIX1);
341 mono_mb_emit_byte (mb, CEE_LDARGA);
342 mono_mb_emit_i2 (mb, argnum);
347 mono_mb_emit_ldloc_addr (MonoMethodBuilder *mb, guint locnum)
350 mono_mb_emit_byte (mb, CEE_LDLOCA_S);
351 mono_mb_emit_byte (mb, locnum);
353 mono_mb_emit_byte (mb, CEE_PREFIX1);
354 mono_mb_emit_byte (mb, CEE_LDLOCA);
355 mono_mb_emit_i2 (mb, locnum);
360 mono_mb_emit_ldloc (MonoMethodBuilder *mb, guint num)
363 mono_mb_emit_byte (mb, CEE_LDLOC_0 + num);
364 } else if (num < 256) {
365 mono_mb_emit_byte (mb, CEE_LDLOC_S);
366 mono_mb_emit_byte (mb, num);
368 mono_mb_emit_byte (mb, CEE_PREFIX1);
369 mono_mb_emit_byte (mb, CEE_LDLOC);
370 mono_mb_emit_i2 (mb, num);
375 mono_mb_emit_stloc (MonoMethodBuilder *mb, guint num)
378 mono_mb_emit_byte (mb, CEE_STLOC_0 + num);
379 } else if (num < 256) {
380 mono_mb_emit_byte (mb, CEE_STLOC_S);
381 mono_mb_emit_byte (mb, num);
383 mono_mb_emit_byte (mb, CEE_PREFIX1);
384 mono_mb_emit_byte (mb, CEE_STLOC);
385 mono_mb_emit_i2 (mb, num);
390 mono_mb_emit_icon (MonoMethodBuilder *mb, gint32 value)
392 if (value >= -1 && value < 8) {
393 mono_mb_emit_byte (mb, CEE_LDC_I4_0 + value);
394 } else if (value >= -128 && value <= 127) {
395 mono_mb_emit_byte (mb, CEE_LDC_I4_S);
396 mono_mb_emit_byte (mb, value);
398 mono_mb_emit_byte (mb, CEE_LDC_I4);
399 mono_mb_emit_i4 (mb, value);
404 mono_mb_get_label (MonoMethodBuilder *mb)
410 mono_mb_get_pos (MonoMethodBuilder *mb)
416 mono_mb_emit_branch (MonoMethodBuilder *mb, guint8 op)
419 mono_mb_emit_byte (mb, op);
421 mono_mb_emit_i4 (mb, 0);
426 mono_mb_emit_short_branch (MonoMethodBuilder *mb, guint8 op)
429 mono_mb_emit_byte (mb, op);
431 mono_mb_emit_byte (mb, 0);
437 mono_mb_emit_branch_label (MonoMethodBuilder *mb, guint8 op, guint32 label)
439 mono_mb_emit_byte (mb, op);
440 mono_mb_emit_i4 (mb, label - (mb->pos + 4));
444 mono_mb_patch_branch (MonoMethodBuilder *mb, guint32 pos)
446 mono_mb_patch_addr (mb, pos, mb->pos - (pos + 4));
450 mono_mb_patch_short_branch (MonoMethodBuilder *mb, guint32 pos)
452 mono_mb_patch_addr_s (mb, pos, mb->pos - (pos + 1));
456 mono_mb_emit_ptr (MonoMethodBuilder *mb, gpointer ptr)
458 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
459 mono_mb_emit_op (mb, CEE_MONO_LDPTR, ptr);
463 mono_mb_emit_calli (MonoMethodBuilder *mb, MonoMethodSignature *sig)
465 mono_mb_emit_op (mb, CEE_CALLI, sig);
469 mono_mb_emit_managed_call (MonoMethodBuilder *mb, MonoMethod *method, MonoMethodSignature *opt_sig)
471 mono_mb_emit_op (mb, CEE_CALL, method);
475 mono_mb_emit_native_call (MonoMethodBuilder *mb, MonoMethodSignature *sig, gpointer func)
477 mono_mb_emit_ptr (mb, func);
478 mono_mb_emit_calli (mb, sig);
482 mono_mb_emit_icall (MonoMethodBuilder *mb, gpointer func)
484 mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
485 mono_mb_emit_op (mb, CEE_MONO_ICALL, func);
489 mono_mb_emit_exception_full (MonoMethodBuilder *mb, const char *exc_nspace, const char *exc_name, const char *msg)
491 MonoMethod *ctor = NULL;
493 MonoClass *mme = mono_class_from_name (mono_defaults.corlib, exc_nspace, exc_name);
494 mono_class_init (mme);
495 ctor = mono_class_get_method_from_name (mme, ".ctor", 0);
497 mono_mb_emit_op (mb, CEE_NEWOBJ, ctor);
499 mono_mb_emit_byte (mb, CEE_DUP);
500 mono_mb_emit_ldflda (mb, G_STRUCT_OFFSET (MonoException, message));
501 mono_mb_emit_ldstr (mb, (char*)msg);
502 mono_mb_emit_byte (mb, CEE_STIND_REF);
504 mono_mb_emit_byte (mb, CEE_THROW);
508 mono_mb_emit_exception (MonoMethodBuilder *mb, const char *exc_name, const char *msg)
510 mono_mb_emit_exception_full (mb, "System", exc_name, msg);
514 mono_mb_emit_add_to_local (MonoMethodBuilder *mb, guint16 local, gint32 incr)
516 mono_mb_emit_ldloc (mb, local);
517 mono_mb_emit_icon (mb, incr);
518 mono_mb_emit_byte (mb, CEE_ADD);
519 mono_mb_emit_stloc (mb, local);