?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
[profiler] Hide the GC roots callback behind a macro and mark it obsolete.
[mono-project.git] / mono / mini / mini.c
blob9948d16c14554277b1c313c217a664b2676a4ca5
1 /**
2 * \file
3 * The new Mono code generator.
4 *
5 * Authors:
6 * Paolo Molaro (lupus@ximian.com)
7 * Dietmar Maurer (dietmar@ximian.com)
8 *
9 * Copyright 2002-2003 Ximian, Inc.
10 * Copyright 2003-2010 Novell, Inc.
11 * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
12 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
13 */
14
15 #include <config.h>
16 #ifdef HAVE_ALLOCA_H
17 #include <alloca.h>
18 #endif
19 #ifdef HAVE_UNISTD_H
20 #include <unistd.h>
21 #endif
22 #include <math.h>
23 #ifdef HAVE_SYS_TIME_H
24 #include <sys/time.h>
25 #endif
26
27 #include <mono/utils/memcheck.h>
28
29 #include <mono/metadata/assembly.h>
30 #include <mono/metadata/loader.h>
31 #include <mono/metadata/tabledefs.h>
32 #include <mono/metadata/class.h>
33 #include <mono/metadata/object.h>
34 #include <mono/metadata/tokentype.h>
35 #include <mono/metadata/tabledefs.h>
36 #include <mono/metadata/threads.h>
37 #include <mono/metadata/appdomain.h>
38 #include <mono/metadata/debug-helpers.h>
39 #include <mono/metadata/profiler-private.h>
40 #include <mono/metadata/mono-config.h>
41 #include <mono/metadata/environment.h>
42 #include <mono/metadata/mono-debug.h>
43 #include <mono/metadata/gc-internals.h>
44 #include <mono/metadata/threads-types.h>
45 #include <mono/metadata/verify.h>
46 #include <mono/metadata/verify-internals.h>
47 #include <mono/metadata/mempool-internals.h>
48 #include <mono/metadata/attach.h>
49 #include <mono/metadata/runtime.h>
50 #include <mono/metadata/attrdefs.h>
51 #include <mono/utils/mono-math.h>
52 #include <mono/utils/mono-compiler.h>
53 #include <mono/utils/mono-counters.h>
54 #include <mono/utils/mono-error-internals.h>
55 #include <mono/utils/mono-logger-internals.h>
56 #include <mono/utils/mono-mmap.h>
57 #include <mono/utils/mono-path.h>
58 #include <mono/utils/mono-tls.h>
59 #include <mono/utils/mono-hwcap.h>
60 #include <mono/utils/dtrace.h>
61 #include <mono/utils/mono-threads.h>
62 #include <mono/utils/mono-threads-coop.h>
63
64 #include "mini.h"
65 #include "seq-points.h"
66 #include "tasklets.h"
67 #include <string.h>
68 #include <ctype.h>
69 #include "trace.h"
70 #include "version.h"
71 #include "ir-emit.h"
72
73 #include "jit-icalls.h"
74
75 #include "mini-gc.h"
76 #include "debugger-agent.h"
77 #include "llvm-runtime.h"
78 #include "mini-llvm.h"
79 #include "lldb.h"
80
81 MonoTraceSpec *mono_jit_trace_calls;
82 MonoMethodDesc *mono_inject_async_exc_method;
83 int mono_inject_async_exc_pos;
84 MonoMethodDesc *mono_break_at_bb_method;
85 int mono_break_at_bb_bb_num;
86 gboolean mono_do_x86_stack_align = TRUE;
87 gboolean mono_using_xdebug;
88
89 /* Counters */
90 static guint32 discarded_code;
91 static double discarded_jit_time;
92
93 #define mono_jit_lock() mono_os_mutex_lock (&jit_mutex)
94 #define mono_jit_unlock() mono_os_mutex_unlock (&jit_mutex)
95 static mono_mutex_t jit_mutex;
96
97 MonoBackend *current_backend;
98
99 #ifndef DISABLE_JIT
100
101 gpointer
102 mono_realloc_native_code (MonoCompile *cfg)
103 {
104 return g_realloc (cfg->native_code, cfg->code_size);
105 }
106
107 typedef struct {
108 MonoExceptionClause *clause;
109 MonoBasicBlock *basic_block;
110 int start_offset;
111 } TryBlockHole;
112
113 /**
114 * mono_emit_unwind_op:
115 *
116 * Add an unwind op with the given parameters for the list of unwind ops stored in
117 * cfg->unwind_ops.
118 */
119 void
120 mono_emit_unwind_op (MonoCompile *cfg, int when, int tag, int reg, int val)
121 {
122 MonoUnwindOp *op = (MonoUnwindOp *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoUnwindOp));
123
124 op->op = tag;
125 op->reg = reg;
126 op->val = val;
127 op->when = when;
128
129 cfg->unwind_ops = g_slist_append_mempool (cfg->mempool, cfg->unwind_ops, op);
130 if (cfg->verbose_level > 1) {
131 switch (tag) {
132 case DW_CFA_def_cfa:
133 printf ("CFA: [%x] def_cfa: %s+0x%x\n", when, mono_arch_regname (reg), val);
134 break;
135 case DW_CFA_def_cfa_register:
136 printf ("CFA: [%x] def_cfa_reg: %s\n", when, mono_arch_regname (reg));
137 break;
138 case DW_CFA_def_cfa_offset:
139 printf ("CFA: [%x] def_cfa_offset: 0x%x\n", when, val);
140 break;
141 case DW_CFA_offset:
142 printf ("CFA: [%x] offset: %s at cfa-0x%x\n", when, mono_arch_regname (reg), -val);
143 break;
144 }
145 }
146 }
147
148 /**
149 * mono_unlink_bblock:
150 *
151 * Unlink two basic blocks.
152 */
153 void
154 mono_unlink_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
155 {
156 int i, pos;
157 gboolean found;
158
159 found = FALSE;
160 for (i = 0; i < from->out_count; ++i) {
161 if (to == from->out_bb [i]) {
162 found = TRUE;
163 break;
164 }
165 }
166 if (found) {
167 pos = 0;
168 for (i = 0; i < from->out_count; ++i) {
169 if (from->out_bb [i] != to)
170 from->out_bb [pos ++] = from->out_bb [i];
171 }
172 g_assert (pos == from->out_count - 1);
173 from->out_count--;
174 }
175
176 found = FALSE;
177 for (i = 0; i < to->in_count; ++i) {
178 if (from == to->in_bb [i]) {
179 found = TRUE;
180 break;
181 }
182 }
183 if (found) {
184 pos = 0;
185 for (i = 0; i < to->in_count; ++i) {
186 if (to->in_bb [i] != from)
187 to->in_bb [pos ++] = to->in_bb [i];
188 }
189 g_assert (pos == to->in_count - 1);
190 to->in_count--;
191 }
192 }
193
194 /*
195 * mono_bblocks_linked:
196 *
197 * Return whenever BB1 and BB2 are linked in the CFG.
198 */
199 gboolean
200 mono_bblocks_linked (MonoBasicBlock *bb1, MonoBasicBlock *bb2)
201 {
202 int i;
203
204 for (i = 0; i < bb1->out_count; ++i) {
205 if (bb1->out_bb [i] == bb2)
206 return TRUE;
207 }
208
209 return FALSE;
210 }
211
212 static int
213 mono_find_block_region_notry (MonoCompile *cfg, int offset)
214 {
215 MonoMethodHeader *header = cfg->header;
216 MonoExceptionClause *clause;
217 int i;
218
219 for (i = 0; i < header->num_clauses; ++i) {
220 clause = &header->clauses [i];
221 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
222 (offset < (clause->handler_offset)))
223 return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
224
225 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
226 if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
227 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
228 else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
229 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
230 else
231 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
232 }
233 }
234
235 return -1;
236 }
237
238 /*
239 * mono_get_block_region_notry:
240 *
241 * Return the region corresponding to REGION, ignoring try clauses nested inside
242 * finally clauses.
243 */
244 int
245 mono_get_block_region_notry (MonoCompile *cfg, int region)
246 {
247 if ((region & (0xf << 4)) == MONO_REGION_TRY) {
248 MonoMethodHeader *header = cfg->header;
249
250 /*
251 * This can happen if a try clause is nested inside a finally clause.
252 */
253 int clause_index = (region >> 8) - 1;
254 g_assert (clause_index >= 0 && clause_index < header->num_clauses);
255
256 region = mono_find_block_region_notry (cfg, header->clauses [clause_index].try_offset);
257 }
258
259 return region;
260 }
261
262 MonoInst *
263 mono_find_spvar_for_region (MonoCompile *cfg, int region)
264 {
265 region = mono_get_block_region_notry (cfg, region);
266
267 return (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
268 }
269
270 static void
271 df_visit (MonoBasicBlock *start, int *dfn, MonoBasicBlock **array)
272 {
273 int i;
274
275 array [*dfn] = start;
276 /* g_print ("visit %d at %p (BB%ld)\n", *dfn, start->cil_code, start->block_num); */
277 for (i = 0; i < start->out_count; ++i) {
278 if (start->out_bb [i]->dfn)
279 continue;
280 (*dfn)++;
281 start->out_bb [i]->dfn = *dfn;
282 start->out_bb [i]->df_parent = start;
283 array [*dfn] = start->out_bb [i];
284 df_visit (start->out_bb [i], dfn, array);
285 }
286 }
287
288 guint32
289 mono_reverse_branch_op (guint32 opcode)
290 {
291 static const int reverse_map [] = {
292 CEE_BNE_UN, CEE_BLT, CEE_BLE, CEE_BGT, CEE_BGE,
293 CEE_BEQ, CEE_BLT_UN, CEE_BLE_UN, CEE_BGT_UN, CEE_BGE_UN
294 };
295 static const int reverse_fmap [] = {
296 OP_FBNE_UN, OP_FBLT, OP_FBLE, OP_FBGT, OP_FBGE,
297 OP_FBEQ, OP_FBLT_UN, OP_FBLE_UN, OP_FBGT_UN, OP_FBGE_UN
298 };
299 static const int reverse_lmap [] = {
300 OP_LBNE_UN, OP_LBLT, OP_LBLE, OP_LBGT, OP_LBGE,
301 OP_LBEQ, OP_LBLT_UN, OP_LBLE_UN, OP_LBGT_UN, OP_LBGE_UN
302 };
303 static const int reverse_imap [] = {
304 OP_IBNE_UN, OP_IBLT, OP_IBLE, OP_IBGT, OP_IBGE,
305 OP_IBEQ, OP_IBLT_UN, OP_IBLE_UN, OP_IBGT_UN, OP_IBGE_UN
306 };
307
308 if (opcode >= CEE_BEQ && opcode <= CEE_BLT_UN) {
309 opcode = reverse_map [opcode - CEE_BEQ];
310 } else if (opcode >= OP_FBEQ && opcode <= OP_FBLT_UN) {
311 opcode = reverse_fmap [opcode - OP_FBEQ];
312 } else if (opcode >= OP_LBEQ && opcode <= OP_LBLT_UN) {
313 opcode = reverse_lmap [opcode - OP_LBEQ];
314 } else if (opcode >= OP_IBEQ && opcode <= OP_IBLT_UN) {
315 opcode = reverse_imap [opcode - OP_IBEQ];
316 } else
317 g_assert_not_reached ();
318
319 return opcode;
320 }
321
322 guint
323 mono_type_to_store_membase (MonoCompile *cfg, MonoType *type)
324 {
325 type = mini_get_underlying_type (type);
326
327 handle_enum:
328 switch (type->type) {
329 case MONO_TYPE_I1:
330 case MONO_TYPE_U1:
331 return OP_STOREI1_MEMBASE_REG;
332 case MONO_TYPE_I2:
333 case MONO_TYPE_U2:
334 return OP_STOREI2_MEMBASE_REG;
335 case MONO_TYPE_I4:
336 case MONO_TYPE_U4:
337 return OP_STOREI4_MEMBASE_REG;
338 case MONO_TYPE_I:
339 case MONO_TYPE_U:
340 case MONO_TYPE_PTR:
341 case MONO_TYPE_FNPTR:
342 return OP_STORE_MEMBASE_REG;
343 case MONO_TYPE_CLASS:
344 case MONO_TYPE_STRING:
345 case MONO_TYPE_OBJECT:
346 case MONO_TYPE_SZARRAY:
347 case MONO_TYPE_ARRAY:
348 return OP_STORE_MEMBASE_REG;
349 case MONO_TYPE_I8:
350 case MONO_TYPE_U8:
351 return OP_STOREI8_MEMBASE_REG;
352 case MONO_TYPE_R4:
353 return OP_STORER4_MEMBASE_REG;
354 case MONO_TYPE_R8:
355 return OP_STORER8_MEMBASE_REG;
356 case MONO_TYPE_VALUETYPE:
357 if (type->data.klass->enumtype) {
358 type = mono_class_enum_basetype (type->data.klass);
359 goto handle_enum;
360 }
361 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
362 return OP_STOREX_MEMBASE;
363 return OP_STOREV_MEMBASE;
364 case MONO_TYPE_TYPEDBYREF:
365 return OP_STOREV_MEMBASE;
366 case MONO_TYPE_GENERICINST:
367 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
368 return OP_STOREX_MEMBASE;
369 type = &type->data.generic_class->container_class->byval_arg;
370 goto handle_enum;
371 case MONO_TYPE_VAR:
372 case MONO_TYPE_MVAR:
373 g_assert (mini_type_var_is_vt (type));
374 return OP_STOREV_MEMBASE;
375 default:
376 g_error ("unknown type 0x%02x in type_to_store_membase", type->type);
377 }
378 return -1;
379 }
380
381 guint
382 mono_type_to_load_membase (MonoCompile *cfg, MonoType *type)
383 {
384 type = mini_get_underlying_type (type);
385
386 switch (type->type) {
387 case MONO_TYPE_I1:
388 return OP_LOADI1_MEMBASE;
389 case MONO_TYPE_U1:
390 return OP_LOADU1_MEMBASE;
391 case MONO_TYPE_I2:
392 return OP_LOADI2_MEMBASE;
393 case MONO_TYPE_U2:
394 return OP_LOADU2_MEMBASE;
395 case MONO_TYPE_I4:
396 return OP_LOADI4_MEMBASE;
397 case MONO_TYPE_U4:
398 return OP_LOADU4_MEMBASE;
399 case MONO_TYPE_I:
400 case MONO_TYPE_U:
401 case MONO_TYPE_PTR:
402 case MONO_TYPE_FNPTR:
403 return OP_LOAD_MEMBASE;
404 case MONO_TYPE_CLASS:
405 case MONO_TYPE_STRING:
406 case MONO_TYPE_OBJECT:
407 case MONO_TYPE_SZARRAY:
408 case MONO_TYPE_ARRAY:
409 return OP_LOAD_MEMBASE;
410 case MONO_TYPE_I8:
411 case MONO_TYPE_U8:
412 return OP_LOADI8_MEMBASE;
413 case MONO_TYPE_R4:
414 return OP_LOADR4_MEMBASE;
415 case MONO_TYPE_R8:
416 return OP_LOADR8_MEMBASE;
417 case MONO_TYPE_VALUETYPE:
418 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
419 return OP_LOADX_MEMBASE;
420 case MONO_TYPE_TYPEDBYREF:
421 return OP_LOADV_MEMBASE;
422 case MONO_TYPE_GENERICINST:
423 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
424 return OP_LOADX_MEMBASE;
425 if (mono_type_generic_inst_is_valuetype (type))
426 return OP_LOADV_MEMBASE;
427 else
428 return OP_LOAD_MEMBASE;
429 break;
430 case MONO_TYPE_VAR:
431 case MONO_TYPE_MVAR:
432 g_assert (cfg->gshared);
433 g_assert (mini_type_var_is_vt (type));
434 return OP_LOADV_MEMBASE;
435 default:
436 g_error ("unknown type 0x%02x in type_to_load_membase", type->type);
437 }
438 return -1;
439 }
440
441 guint
442 mini_type_to_stind (MonoCompile* cfg, MonoType *type)
443 {
444 type = mini_get_underlying_type (type);
445 if (cfg->gshared && !type->byref && (type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR)) {
446 g_assert (mini_type_var_is_vt (type));
447 return CEE_STOBJ;
448 }
449 return mono_type_to_stind (type);
450 }
451
452 int
453 mono_op_imm_to_op (int opcode)
454 {
455 switch (opcode) {
456 case OP_ADD_IMM:
457 #if SIZEOF_REGISTER == 4
458 return OP_IADD;
459 #else
460 return OP_LADD;
461 #endif
462 case OP_IADD_IMM:
463 return OP_IADD;
464 case OP_LADD_IMM:
465 return OP_LADD;
466 case OP_ISUB_IMM:
467 return OP_ISUB;
468 case OP_LSUB_IMM:
469 return OP_LSUB;
470 case OP_IMUL_IMM:
471 return OP_IMUL;
472 case OP_LMUL_IMM:
473 return OP_LMUL;
474 case OP_AND_IMM:
475 #if SIZEOF_REGISTER == 4
476 return OP_IAND;
477 #else
478 return OP_LAND;
479 #endif
480 case OP_OR_IMM:
481 #if SIZEOF_REGISTER == 4
482 return OP_IOR;
483 #else
484 return OP_LOR;
485 #endif
486 case OP_XOR_IMM:
487 #if SIZEOF_REGISTER == 4
488 return OP_IXOR;
489 #else
490 return OP_LXOR;
491 #endif
492 case OP_IAND_IMM:
493 return OP_IAND;
494 case OP_LAND_IMM:
495 return OP_LAND;
496 case OP_IOR_IMM:
497 return OP_IOR;
498 case OP_LOR_IMM:
499 return OP_LOR;
500 case OP_IXOR_IMM:
501 return OP_IXOR;
502 case OP_LXOR_IMM:
503 return OP_LXOR;
504 case OP_ISHL_IMM:
505 return OP_ISHL;
506 case OP_LSHL_IMM:
507 return OP_LSHL;
508 case OP_ISHR_IMM:
509 return OP_ISHR;
510 case OP_LSHR_IMM:
511 return OP_LSHR;
512 case OP_ISHR_UN_IMM:
513 return OP_ISHR_UN;
514 case OP_LSHR_UN_IMM:
515 return OP_LSHR_UN;
516 case OP_IDIV_IMM:
517 return OP_IDIV;
518 case OP_LDIV_IMM:
519 return OP_LDIV;
520 case OP_IDIV_UN_IMM:
521 return OP_IDIV_UN;
522 case OP_LDIV_UN_IMM:
523 return OP_LDIV_UN;
524 case OP_IREM_UN_IMM:
525 return OP_IREM_UN;
526 case OP_LREM_UN_IMM:
527 return OP_LREM_UN;
528 case OP_IREM_IMM:
529 return OP_IREM;
530 case OP_LREM_IMM:
531 return OP_LREM;
532 case OP_DIV_IMM:
533 #if SIZEOF_REGISTER == 4
534 return OP_IDIV;
535 #else
536 return OP_LDIV;
537 #endif
538 case OP_REM_IMM:
539 #if SIZEOF_REGISTER == 4
540 return OP_IREM;
541 #else
542 return OP_LREM;
543 #endif
544 case OP_ADDCC_IMM:
545 return OP_ADDCC;
546 case OP_ADC_IMM:
547 return OP_ADC;
548 case OP_SUBCC_IMM:
549 return OP_SUBCC;
550 case OP_SBB_IMM:
551 return OP_SBB;
552 case OP_IADC_IMM:
553 return OP_IADC;
554 case OP_ISBB_IMM:
555 return OP_ISBB;
556 case OP_COMPARE_IMM:
557 return OP_COMPARE;
558 case OP_ICOMPARE_IMM:
559 return OP_ICOMPARE;
560 case OP_LOCALLOC_IMM:
561 return OP_LOCALLOC;
562 }
563
564 return -1;
565 }
566
567 /*
568 * mono_decompose_op_imm:
569 *
570 * Replace the OP_.._IMM INS with its non IMM variant.
571 */
572 void
573 mono_decompose_op_imm (MonoCompile *cfg, MonoBasicBlock *bb, MonoInst *ins)
574 {
575 int opcode2 = mono_op_imm_to_op (ins->opcode);
576 MonoInst *temp;
577 guint32 dreg;
578 const char *spec = INS_INFO (ins->opcode);
579
580 if (spec [MONO_INST_SRC2] == 'l') {
581 dreg = mono_alloc_lreg (cfg);
582
583 /* Load the 64bit constant using decomposed ops */
584 MONO_INST_NEW (cfg, temp, OP_ICONST);
585 temp->inst_c0 = ins->inst_ls_word;
586 temp->dreg = MONO_LVREG_LS (dreg);
587 mono_bblock_insert_before_ins (bb, ins, temp);
588
589 MONO_INST_NEW (cfg, temp, OP_ICONST);
590 temp->inst_c0 = ins->inst_ms_word;
591 temp->dreg = MONO_LVREG_MS (dreg);
592 } else {
593 dreg = mono_alloc_ireg (cfg);
594
595 MONO_INST_NEW (cfg, temp, OP_ICONST);
596 temp->inst_c0 = ins->inst_imm;
597 temp->dreg = dreg;
598 }
599
600 mono_bblock_insert_before_ins (bb, ins, temp);
601
602 if (opcode2 == -1)
603 g_error ("mono_op_imm_to_op failed for %s\n", mono_inst_name (ins->opcode));
604 ins->opcode = opcode2;
605
606 if (ins->opcode == OP_LOCALLOC)
607 ins->sreg1 = dreg;
608 else
609 ins->sreg2 = dreg;
610
611 bb->max_vreg = MAX (bb->max_vreg, cfg->next_vreg);
612 }
613
614 static void
615 set_vreg_to_inst (MonoCompile *cfg, int vreg, MonoInst *inst)
616 {
617 if (vreg >= cfg->vreg_to_inst_len) {
618 MonoInst **tmp = cfg->vreg_to_inst;
619 int size = cfg->vreg_to_inst_len;
620
621 while (vreg >= cfg->vreg_to_inst_len)
622 cfg->vreg_to_inst_len = cfg->vreg_to_inst_len ? cfg->vreg_to_inst_len * 2 : 32;
623 cfg->vreg_to_inst = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * cfg->vreg_to_inst_len);
624 if (size)
625 memcpy (cfg->vreg_to_inst, tmp, size * sizeof (MonoInst*));
626 }
627 cfg->vreg_to_inst [vreg] = inst;
628 }
629
630 #define mono_type_is_long(type) (!(type)->byref && ((mono_type_get_underlying_type (type)->type == MONO_TYPE_I8) || (mono_type_get_underlying_type (type)->type == MONO_TYPE_U8)))
631 #define mono_type_is_float(type) (!(type)->byref && (((type)->type == MONO_TYPE_R8) || ((type)->type == MONO_TYPE_R4)))
632
633 MonoInst*
634 mono_compile_create_var_for_vreg (MonoCompile *cfg, MonoType *type, int opcode, int vreg)
635 {
636 MonoInst *inst;
637 int num = cfg->num_varinfo;
638 gboolean regpair;
639
640 type = mini_get_underlying_type (type);
641
642 if ((num + 1) >= cfg->varinfo_count) {
643 int orig_count = cfg->varinfo_count;
644 cfg->varinfo_count = cfg->varinfo_count ? (cfg->varinfo_count * 2) : 32;
645 cfg->varinfo = (MonoInst **)g_realloc (cfg->varinfo, sizeof (MonoInst*) * cfg->varinfo_count);
646 cfg->vars = (MonoMethodVar *)g_realloc (cfg->vars, sizeof (MonoMethodVar) * cfg->varinfo_count);
647 memset (&cfg->vars [orig_count], 0, (cfg->varinfo_count - orig_count) * sizeof (MonoMethodVar));
648 }
649
650 cfg->stat_allocate_var++;
651
652 MONO_INST_NEW (cfg, inst, opcode);
653 inst->inst_c0 = num;
654 inst->inst_vtype = type;
655 inst->klass = mono_class_from_mono_type (type);
656 type_to_eval_stack_type (cfg, type, inst);
657 /* if set to 1 the variable is native */
658 inst->backend.is_pinvoke = 0;
659 inst->dreg = vreg;
660
661 if (mono_class_has_failure (inst->klass))
662 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
663
664 if (cfg->compute_gc_maps) {
665 if (type->byref) {
666 mono_mark_vreg_as_mp (cfg, vreg);
667 } else {
668 if ((MONO_TYPE_ISSTRUCT (type) && inst->klass->has_references) || mini_type_is_reference (type)) {
669 inst->flags |= MONO_INST_GC_TRACK;
670 mono_mark_vreg_as_ref (cfg, vreg);
671 }
672 }
673 }
674
675 cfg->varinfo [num] = inst;
676
677 cfg->vars [num].idx = num;
678 cfg->vars [num].vreg = vreg;
679 cfg->vars [num].range.first_use.pos.bid = 0xffff;
680 cfg->vars [num].reg = -1;
681
682 if (vreg != -1)
683 set_vreg_to_inst (cfg, vreg, inst);
684
685 #if SIZEOF_REGISTER == 4
686 if (mono_arch_is_soft_float ()) {
687 regpair = mono_type_is_long (type) || mono_type_is_float (type);
688 } else {
689 regpair = mono_type_is_long (type);
690 }
691 #else
692 regpair = FALSE;
693 #endif
694
695 if (regpair) {
696 MonoInst *tree;
697
698 /*
699 * These two cannot be allocated using create_var_for_vreg since that would
700 * put it into the cfg->varinfo array, confusing many parts of the JIT.
701 */
702
703 /*
704 * Set flags to VOLATILE so SSA skips it.
705 */
706
707 if (cfg->verbose_level >= 4) {
708 printf (" Create LVAR R%d (R%d, R%d)\n", inst->dreg, MONO_LVREG_LS (inst->dreg), MONO_LVREG_MS (inst->dreg));
709 }
710
711 if (mono_arch_is_soft_float () && cfg->opt & MONO_OPT_SSA) {
712 if (mono_type_is_float (type))
713 inst->flags = MONO_INST_VOLATILE;
714 }
715
716 /* Allocate a dummy MonoInst for the first vreg */
717 MONO_INST_NEW (cfg, tree, OP_LOCAL);
718 tree->dreg = MONO_LVREG_LS (inst->dreg);
719 if (cfg->opt & MONO_OPT_SSA)
720 tree->flags = MONO_INST_VOLATILE;
721 tree->inst_c0 = num;
722 tree->type = STACK_I4;
723 tree->inst_vtype = &mono_defaults.int32_class->byval_arg;
724 tree->klass = mono_class_from_mono_type (tree->inst_vtype);
725
726 set_vreg_to_inst (cfg, MONO_LVREG_LS (inst->dreg), tree);
727
728 /* Allocate a dummy MonoInst for the second vreg */
729 MONO_INST_NEW (cfg, tree, OP_LOCAL);
730 tree->dreg = MONO_LVREG_MS (inst->dreg);
731 if (cfg->opt & MONO_OPT_SSA)
732 tree->flags = MONO_INST_VOLATILE;
733 tree->inst_c0 = num;
734 tree->type = STACK_I4;
735 tree->inst_vtype = &mono_defaults.int32_class->byval_arg;
736 tree->klass = mono_class_from_mono_type (tree->inst_vtype);
737
738 set_vreg_to_inst (cfg, MONO_LVREG_MS (inst->dreg), tree);
739 }
740
741 cfg->num_varinfo++;
742 if (cfg->verbose_level > 2)
743 g_print ("created temp %d (R%d) of type %s\n", num, vreg, mono_type_get_name (type));
744 return inst;
745 }
746
747 MonoInst*
748 mono_compile_create_var (MonoCompile *cfg, MonoType *type, int opcode)
749 {
750 int dreg;
751 type = mini_get_underlying_type (type);
752
753 if (mono_type_is_long (type))
754 dreg = mono_alloc_dreg (cfg, STACK_I8);
755 else if (mono_arch_is_soft_float () && mono_type_is_float (type))
756 dreg = mono_alloc_dreg (cfg, STACK_R8);
757 else
758 /* All the others are unified */
759 dreg = mono_alloc_preg (cfg);
760
761 return mono_compile_create_var_for_vreg (cfg, type, opcode, dreg);
762 }
763
764 MonoInst*
765 mini_get_int_to_float_spill_area (MonoCompile *cfg)
766 {
767 #ifdef TARGET_X86
768 if (!cfg->iconv_raw_var) {
769 cfg->iconv_raw_var = mono_compile_create_var (cfg, &mono_defaults.int32_class->byval_arg, OP_LOCAL);
770 cfg->iconv_raw_var->flags |= MONO_INST_VOLATILE; /*FIXME, use the don't regalloc flag*/
771 }
772 return cfg->iconv_raw_var;
773 #else
774 return NULL;
775 #endif
776 }
777
778 void
779 mono_mark_vreg_as_ref (MonoCompile *cfg, int vreg)
780 {
781 if (vreg >= cfg->vreg_is_ref_len) {
782 gboolean *tmp = cfg->vreg_is_ref;
783 int size = cfg->vreg_is_ref_len;
784
785 while (vreg >= cfg->vreg_is_ref_len)
786 cfg->vreg_is_ref_len = cfg->vreg_is_ref_len ? cfg->vreg_is_ref_len * 2 : 32;
787 cfg->vreg_is_ref = (gboolean *)mono_mempool_alloc0 (cfg->mempool, sizeof (gboolean) * cfg->vreg_is_ref_len);
788 if (size)
789 memcpy (cfg->vreg_is_ref, tmp, size * sizeof (gboolean));
790 }
791 cfg->vreg_is_ref [vreg] = TRUE;
792 }
793
794 void
795 mono_mark_vreg_as_mp (MonoCompile *cfg, int vreg)
796 {
797 if (vreg >= cfg->vreg_is_mp_len) {
798 gboolean *tmp = cfg->vreg_is_mp;
799 int size = cfg->vreg_is_mp_len;
800
801 while (vreg >= cfg->vreg_is_mp_len)
802 cfg->vreg_is_mp_len = cfg->vreg_is_mp_len ? cfg->vreg_is_mp_len * 2 : 32;
803 cfg->vreg_is_mp = (gboolean *)mono_mempool_alloc0 (cfg->mempool, sizeof (gboolean) * cfg->vreg_is_mp_len);
804 if (size)
805 memcpy (cfg->vreg_is_mp, tmp, size * sizeof (gboolean));
806 }
807 cfg->vreg_is_mp [vreg] = TRUE;
808 }
809
810 static MonoType*
811 type_from_stack_type (MonoInst *ins)
812 {
813 switch (ins->type) {
814 case STACK_I4: return &mono_defaults.int32_class->byval_arg;
815 case STACK_I8: return &mono_defaults.int64_class->byval_arg;
816 case STACK_PTR: return &mono_defaults.int_class->byval_arg;
817 case STACK_R8: return &mono_defaults.double_class->byval_arg;
818 case STACK_MP:
819 /*
820 * this if used to be commented without any specific reason, but
821 * it breaks #80235 when commented
822 */
823 if (ins->klass)
824 return &ins->klass->this_arg;
825 else
826 return &mono_defaults.object_class->this_arg;
827 case STACK_OBJ:
828 /* ins->klass may not be set for ldnull.
829 * Also, if we have a boxed valuetype, we want an object lass,
830 * not the valuetype class
831 */
832 if (ins->klass && !ins->klass->valuetype)
833 return &ins->klass->byval_arg;
834 return &mono_defaults.object_class->byval_arg;
835 case STACK_VTYPE: return &ins->klass->byval_arg;
836 default:
837 g_error ("stack type %d to montype not handled\n", ins->type);
838 }
839 return NULL;
840 }
841
842 MonoType*
843 mono_type_from_stack_type (MonoInst *ins)
844 {
845 return type_from_stack_type (ins);
846 }
847
848 /*
849 * mono_add_ins_to_end:
850 *
851 * Same as MONO_ADD_INS, but add INST before any branches at the end of BB.
852 */
853 void
854 mono_add_ins_to_end (MonoBasicBlock *bb, MonoInst *inst)
855 {
856 int opcode;
857
858 if (!bb->code) {
859 MONO_ADD_INS (bb, inst);
860 return;
861 }
862
863 switch (bb->last_ins->opcode) {
864 case OP_BR:
865 case OP_BR_REG:
866 case CEE_BEQ:
867 case CEE_BGE:
868 case CEE_BGT:
869 case CEE_BLE:
870 case CEE_BLT:
871 case CEE_BNE_UN:
872 case CEE_BGE_UN:
873 case CEE_BGT_UN:
874 case CEE_BLE_UN:
875 case CEE_BLT_UN:
876 case OP_SWITCH:
877 mono_bblock_insert_before_ins (bb, bb->last_ins, inst);
878 break;
879 default:
880 if (MONO_IS_COND_BRANCH_OP (bb->last_ins)) {
881 /* Need to insert the ins before the compare */
882 if (bb->code == bb->last_ins) {
883 mono_bblock_insert_before_ins (bb, bb->last_ins, inst);
884 return;
885 }
886
887 if (bb->code->next == bb->last_ins) {
888 /* Only two instructions */
889 opcode = bb->code->opcode;
890
891 if ((opcode == OP_COMPARE) || (opcode == OP_COMPARE_IMM) || (opcode == OP_ICOMPARE) || (opcode == OP_ICOMPARE_IMM) || (opcode == OP_FCOMPARE) || (opcode == OP_LCOMPARE) || (opcode == OP_LCOMPARE_IMM) || (opcode == OP_RCOMPARE)) {
892 /* NEW IR */
893 mono_bblock_insert_before_ins (bb, bb->code, inst);
894 } else {
895 mono_bblock_insert_before_ins (bb, bb->last_ins, inst);
896 }
897 } else {
898 opcode = bb->last_ins->prev->opcode;
899
900 if ((opcode == OP_COMPARE) || (opcode == OP_COMPARE_IMM) || (opcode == OP_ICOMPARE) || (opcode == OP_ICOMPARE_IMM) || (opcode == OP_FCOMPARE) || (opcode == OP_LCOMPARE) || (opcode == OP_LCOMPARE_IMM) || (opcode == OP_RCOMPARE)) {
901 /* NEW IR */
902 mono_bblock_insert_before_ins (bb, bb->last_ins->prev, inst);
903 } else {
904 mono_bblock_insert_before_ins (bb, bb->last_ins, inst);
905 }
906 }
907 }
908 else
909 MONO_ADD_INS (bb, inst);
910 break;
911 }
912 }
913
914 void
915 mono_create_jump_table (MonoCompile *cfg, MonoInst *label, MonoBasicBlock **bbs, int num_blocks)
916 {
917 MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfo));
918 MonoJumpInfoBBTable *table;
919
920 table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
921 table->table = bbs;
922 table->table_size = num_blocks;
923
924 ji->ip.label = label;
925 ji->type = MONO_PATCH_INFO_SWITCH;
926 ji->data.table = table;
927 ji->next = cfg->patch_info;
928 cfg->patch_info = ji;
929 }
930
931 static MonoMethodSignature *
932 mono_get_array_new_va_signature (int arity)
933 {
934 static GHashTable *sighash;
935 MonoMethodSignature *res;
936 int i;
937
938 mono_jit_lock ();
939 if (!sighash) {
940 sighash = g_hash_table_new (NULL, NULL);
941 }
942 else if ((res = (MonoMethodSignature *)g_hash_table_lookup (sighash, GINT_TO_POINTER (arity)))) {
943 mono_jit_unlock ();
944 return res;
945 }
946
947 res = mono_metadata_signature_alloc (mono_defaults.corlib, arity + 1);
948
949 res->pinvoke = 1;
950 if (ARCH_VARARG_ICALLS)
951 /* Only set this only some archs since not all backends can handle varargs+pinvoke */
952 res->call_convention = MONO_CALL_VARARG;
953
954 #ifdef TARGET_WIN32
955 res->call_convention = MONO_CALL_C;
956 #endif
957
958 res->params [0] = &mono_defaults.int_class->byval_arg;
959 for (i = 0; i < arity; i++)
960 res->params [i + 1] = &mono_defaults.int_class->byval_arg;
961
962 res->ret = &mono_defaults.object_class->byval_arg;
963
964 g_hash_table_insert (sighash, GINT_TO_POINTER (arity), res);
965 mono_jit_unlock ();
966
967 return res;
968 }
969
970 MonoJitICallInfo *
971 mono_get_array_new_va_icall (int rank)
972 {
973 MonoMethodSignature *esig;
974 char icall_name [256];
975 char *name;
976 MonoJitICallInfo *info;
977
978 /* Need to register the icall so it gets an icall wrapper */
979 sprintf (icall_name, "ves_array_new_va_%d", rank);
980
981 mono_jit_lock ();
982 info = mono_find_jit_icall_by_name (icall_name);
983 if (info == NULL) {
984 esig = mono_get_array_new_va_signature (rank);
985 name = g_strdup (icall_name);
986 info = mono_register_jit_icall (mono_array_new_va, name, esig, FALSE);
987 }
988 mono_jit_unlock ();
989
990 return info;
991 }
992
993 gboolean
994 mini_class_is_system_array (MonoClass *klass)
995 {
996 if (klass->parent == mono_defaults.array_class)
997 return TRUE;
998 else
999 return FALSE;
1000 }
1001
1002 gboolean
1003 mini_assembly_can_skip_verification (MonoDomain *domain, MonoMethod *method)
1004 {
1005 MonoAssembly *assembly = method->klass->image->assembly;
1006 if (method->wrapper_type != MONO_WRAPPER_NONE && method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
1007 return FALSE;
1008 if (assembly->in_gac || assembly->image == mono_defaults.corlib)
1009 return FALSE;
1010 return mono_assembly_has_skip_verification (assembly);
1011 }
1012
1013 /*
1014 * mini_method_verify:
1015 *
1016 * Verify the method using the verfier.
1017 *
1018 * Returns true if the method is invalid.
1019 */
1020 static gboolean
1021 mini_method_verify (MonoCompile *cfg, MonoMethod *method, gboolean fail_compile)
1022 {
1023 GSList *tmp, *res;
1024 gboolean is_fulltrust;
1025
1026 if (method->verification_success)
1027 return FALSE;
1028
1029 if (!mono_verifier_is_enabled_for_method (method))
1030 return FALSE;
1031
1032 /*skip verification implies the assembly must be */
1033 is_fulltrust = mono_verifier_is_method_full_trust (method) || mini_assembly_can_skip_verification (cfg->domain, method);
1034
1035 res = mono_method_verify_with_current_settings (method, cfg->skip_visibility, is_fulltrust);
1036
1037 if (res) {
1038 for (tmp = res; tmp; tmp = tmp->next) {
1039 MonoVerifyInfoExtended *info = (MonoVerifyInfoExtended *)tmp->data;
1040 if (info->info.status == MONO_VERIFY_ERROR) {
1041 if (fail_compile) {
1042 char *method_name = mono_method_full_name (method, TRUE);
1043 cfg->exception_type = info->exception_type;
1044 cfg->exception_message = g_strdup_printf ("Error verifying %s: %s", method_name, info->info.message);
1045 g_free (method_name);
1046 }
1047 mono_free_verify_list (res);
1048 return TRUE;
1049 }
1050 if (info->info.status == MONO_VERIFY_NOT_VERIFIABLE && (!is_fulltrust || info->exception_type == MONO_EXCEPTION_METHOD_ACCESS || info->exception_type == MONO_EXCEPTION_FIELD_ACCESS)) {
1051 if (fail_compile) {
1052 char *method_name = mono_method_full_name (method, TRUE);
1053 char *msg = g_strdup_printf ("Error verifying %s: %s", method_name, info->info.message);
1054
1055 if (info->exception_type == MONO_EXCEPTION_METHOD_ACCESS)
1056 mono_error_set_generic_error (&cfg->error, "System", "MethodAccessException", "%s", msg);
1057 else if (info->exception_type == MONO_EXCEPTION_FIELD_ACCESS)
1058 mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "%s", msg);
1059 else if (info->exception_type == MONO_EXCEPTION_UNVERIFIABLE_IL)
1060 mono_error_set_generic_error (&cfg->error, "System.Security", "VerificationException", "%s", msg);
1061 if (!mono_error_ok (&cfg->error)) {
1062 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
1063 g_free (msg);
1064 } else {
1065 cfg->exception_type = info->exception_type;
1066 cfg->exception_message = msg;
1067 }
1068 g_free (method_name);
1069 }
1070 mono_free_verify_list (res);
1071 return TRUE;
1072 }
1073 }
1074 mono_free_verify_list (res);
1075 }
1076 method->verification_success = 1;
1077 return FALSE;
1078 }
1079
1080 /*Returns true if something went wrong*/
1081 gboolean
1082 mono_compile_is_broken (MonoCompile *cfg, MonoMethod *method, gboolean fail_compile)
1083 {
1084 MonoMethod *method_definition = method;
1085 gboolean dont_verify = method->klass->image->assembly->corlib_internal;
1086
1087 while (method_definition->is_inflated) {
1088 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
1089 method_definition = imethod->declaring;
1090 }
1091
1092 return !dont_verify && mini_method_verify (cfg, method_definition, fail_compile);
1093 }
1094
1095 static void
1096 mono_dynamic_code_hash_insert (MonoDomain *domain, MonoMethod *method, MonoJitDynamicMethodInfo *ji)
1097 {
1098 if (!domain_jit_info (domain)->dynamic_code_hash)
1099 domain_jit_info (domain)->dynamic_code_hash = g_hash_table_new (NULL, NULL);
1100 g_hash_table_insert (domain_jit_info (domain)->dynamic_code_hash, method, ji);
1101 }
1102
1103 static MonoJitDynamicMethodInfo*
1104 mono_dynamic_code_hash_lookup (MonoDomain *domain, MonoMethod *method)
1105 {
1106 MonoJitDynamicMethodInfo *res;
1107
1108 if (domain_jit_info (domain)->dynamic_code_hash)
1109 res = (MonoJitDynamicMethodInfo *)g_hash_table_lookup (domain_jit_info (domain)->dynamic_code_hash, method);
1110 else
1111 res = NULL;
1112 return res;
1113 }
1114
1115 typedef struct {
1116 MonoClass *vtype;
1117 GList *active, *inactive;
1118 GSList *slots;
1119 } StackSlotInfo;
1120
1121 static gint
1122 compare_by_interval_start_pos_func (gconstpointer a, gconstpointer b)
1123 {
1124 MonoMethodVar *v1 = (MonoMethodVar*)a;
1125 MonoMethodVar *v2 = (MonoMethodVar*)b;
1126
1127 if (v1 == v2)
1128 return 0;
1129 else if (v1->interval->range && v2->interval->range)
1130 return v1->interval->range->from - v2->interval->range->from;
1131 else if (v1->interval->range)
1132 return -1;
1133 else
1134 return 1;
1135 }
1136
1137 #if 0
1138 #define LSCAN_DEBUG(a) do { a; } while (0)
1139 #else
1140 #define LSCAN_DEBUG(a)
1141 #endif
1142
1143 static gint32*
1144 mono_allocate_stack_slots2 (MonoCompile *cfg, gboolean backward, guint32 *stack_size, guint32 *stack_align)
1145 {
1146 int i, slot, offset, size;
1147 guint32 align;
1148 MonoMethodVar *vmv;
1149 MonoInst *inst;
1150 gint32 *offsets;
1151 GList *vars = NULL, *l, *unhandled;
1152 StackSlotInfo *scalar_stack_slots, *vtype_stack_slots, *slot_info;
1153 MonoType *t;
1154 int nvtypes;
1155 gboolean reuse_slot;
1156
1157 LSCAN_DEBUG (printf ("Allocate Stack Slots 2 for %s:\n", mono_method_full_name (cfg->method, TRUE)));
1158
1159 scalar_stack_slots = (StackSlotInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (StackSlotInfo) * MONO_TYPE_PINNED);
1160 vtype_stack_slots = NULL;
1161 nvtypes = 0;
1162
1163 offsets = (gint32 *)mono_mempool_alloc (cfg->mempool, sizeof (gint32) * cfg->num_varinfo);
1164 for (i = 0; i < cfg->num_varinfo; ++i)
1165 offsets [i] = -1;
1166
1167 for (i = cfg->locals_start; i < cfg->num_varinfo; i++) {
1168 inst = cfg->varinfo [i];
1169 vmv = MONO_VARINFO (cfg, i);
1170
1171 if ((inst->flags & MONO_INST_IS_DEAD) || inst->opcode == OP_REGVAR || inst->opcode == OP_REGOFFSET)
1172 continue;
1173
1174 vars = g_list_prepend (vars, vmv);
1175 }
1176
1177 vars = g_list_sort (vars, compare_by_interval_start_pos_func);
1178
1179 /* Sanity check */
1180 /*
1181 i = 0;
1182 for (unhandled = vars; unhandled; unhandled = unhandled->next) {
1183 MonoMethodVar *current = unhandled->data;
1184
1185 if (current->interval->range) {
1186 g_assert (current->interval->range->from >= i);
1187 i = current->interval->range->from;
1188 }
1189 }
1190 */
1191
1192 offset = 0;
1193 *stack_align = 0;
1194 for (unhandled = vars; unhandled; unhandled = unhandled->next) {
1195 MonoMethodVar *current = (MonoMethodVar *)unhandled->data;
1196
1197 vmv = current;
1198 inst = cfg->varinfo [vmv->idx];
1199
1200 t = mono_type_get_underlying_type (inst->inst_vtype);
1201 if (cfg->gsharedvt && mini_is_gsharedvt_variable_type (t))
1202 continue;
1203
1204 /* inst->backend.is_pinvoke indicates native sized value types, this is used by the
1205 * pinvoke wrappers when they call functions returning structures */
1206 if (inst->backend.is_pinvoke && MONO_TYPE_ISSTRUCT (t) && t->type != MONO_TYPE_TYPEDBYREF) {
1207 size = mono_class_native_size (mono_class_from_mono_type (t), &align);
1208 }
1209 else {
1210 int ialign;
1211
1212 size = mini_type_stack_size (t, &ialign);
1213 align = ialign;
1214
1215 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (t)))
1216 align = 16;
1217 }
1218
1219 reuse_slot = TRUE;
1220 if (cfg->disable_reuse_stack_slots)
1221 reuse_slot = FALSE;
1222
1223 t = mini_get_underlying_type (t);
1224 switch (t->type) {
1225 case MONO_TYPE_GENERICINST:
1226 if (!mono_type_generic_inst_is_valuetype (t)) {
1227 slot_info = &scalar_stack_slots [t->type];
1228 break;
1229 }
1230 /* Fall through */
1231 case MONO_TYPE_VALUETYPE:
1232 if (!vtype_stack_slots)
1233 vtype_stack_slots = (StackSlotInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (StackSlotInfo) * 256);
1234 for (i = 0; i < nvtypes; ++i)
1235 if (t->data.klass == vtype_stack_slots [i].vtype)
1236 break;
1237 if (i < nvtypes)
1238 slot_info = &vtype_stack_slots [i];
1239 else {
1240 g_assert (nvtypes < 256);
1241 vtype_stack_slots [nvtypes].vtype = t->data.klass;
1242 slot_info = &vtype_stack_slots [nvtypes];
1243 nvtypes ++;
1244 }
1245 if (cfg->disable_reuse_ref_stack_slots)
1246 reuse_slot = FALSE;
1247 break;
1248
1249 case MONO_TYPE_PTR:
1250 case MONO_TYPE_I:
1251 case MONO_TYPE_U:
1252 #if SIZEOF_VOID_P == 4
1253 case MONO_TYPE_I4:
1254 #else
1255 case MONO_TYPE_I8:
1256 #endif
1257 if (cfg->disable_ref_noref_stack_slot_share) {
1258 slot_info = &scalar_stack_slots [MONO_TYPE_I];
1259 break;
1260 }
1261 /* Fall through */
1262
1263 case MONO_TYPE_CLASS:
1264 case MONO_TYPE_OBJECT:
1265 case MONO_TYPE_ARRAY:
1266 case MONO_TYPE_SZARRAY:
1267 case MONO_TYPE_STRING:
1268 /* Share non-float stack slots of the same size */
1269 slot_info = &scalar_stack_slots [MONO_TYPE_CLASS];
1270 if (cfg->disable_reuse_ref_stack_slots)
1271 reuse_slot = FALSE;
1272 break;
1273
1274 default:
1275 slot_info = &scalar_stack_slots [t->type];
1276 }
1277
1278 slot = 0xffffff;
1279 if (cfg->comp_done & MONO_COMP_LIVENESS) {
1280 int pos;
1281 gboolean changed;
1282
1283 //printf ("START %2d %08x %08x\n", vmv->idx, vmv->range.first_use.abs_pos, vmv->range.last_use.abs_pos);
1284
1285 if (!current->interval->range) {
1286 if (inst->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT))
1287 pos = ~0;
1288 else {
1289 /* Dead */
1290 inst->flags |= MONO_INST_IS_DEAD;
1291 continue;
1292 }
1293 }
1294 else
1295 pos = current->interval->range->from;
1296
1297 LSCAN_DEBUG (printf ("process R%d ", inst->dreg));
1298 if (current->interval->range)
1299 LSCAN_DEBUG (mono_linterval_print (current->interval));
1300 LSCAN_DEBUG (printf ("\n"));
1301
1302 /* Check for intervals in active which expired or inactive */
1303 changed = TRUE;
1304 /* FIXME: Optimize this */
1305 while (changed) {
1306 changed = FALSE;
1307 for (l = slot_info->active; l != NULL; l = l->next) {
1308 MonoMethodVar *v = (MonoMethodVar*)l->data;
1309
1310 if (v->interval->last_range->to < pos) {
1311 slot_info->active = g_list_delete_link (slot_info->active, l);
1312 slot_info->slots = g_slist_prepend_mempool (cfg->mempool, slot_info->slots, GINT_TO_POINTER (offsets [v->idx]));
1313 LSCAN_DEBUG (printf ("Interval R%d has expired, adding 0x%x to slots\n", cfg->varinfo [v->idx]->dreg, offsets [v->idx]));
1314 changed = TRUE;
1315 break;
1316 }
1317 else if (!mono_linterval_covers (v->interval, pos)) {
1318 slot_info->inactive = g_list_append (slot_info->inactive, v);
1319 slot_info->active = g_list_delete_link (slot_info->active, l);
1320 LSCAN_DEBUG (printf ("Interval R%d became inactive\n", cfg->varinfo [v->idx]->dreg));
1321 changed = TRUE;
1322 break;
1323 }
1324 }
1325 }
1326
1327 /* Check for intervals in inactive which expired or active */
1328 changed = TRUE;
1329 /* FIXME: Optimize this */
1330 while (changed) {
1331 changed = FALSE;
1332 for (l = slot_info->inactive; l != NULL; l = l->next) {
1333 MonoMethodVar *v = (MonoMethodVar*)l->data;
1334
1335 if (v->interval->last_range->to < pos) {
1336 slot_info->inactive = g_list_delete_link (slot_info->inactive, l);
1337 // FIXME: Enabling this seems to cause impossible to debug crashes
1338 //slot_info->slots = g_slist_prepend_mempool (cfg->mempool, slot_info->slots, GINT_TO_POINTER (offsets [v->idx]));
1339 LSCAN_DEBUG (printf ("Interval R%d has expired, adding 0x%x to slots\n", cfg->varinfo [v->idx]->dreg, offsets [v->idx]));
1340 changed = TRUE;
1341 break;
1342 }
1343 else if (mono_linterval_covers (v->interval, pos)) {
1344 slot_info->active = g_list_append (slot_info->active, v);
1345 slot_info->inactive = g_list_delete_link (slot_info->inactive, l);
1346 LSCAN_DEBUG (printf ("\tInterval R%d became active\n", cfg->varinfo [v->idx]->dreg));
1347 changed = TRUE;
1348 break;
1349 }
1350 }
1351 }
1352
1353 /*
1354 * This also handles the case when the variable is used in an
1355 * exception region, as liveness info is not computed there.
1356 */
1357 /*
1358 * FIXME: All valuetypes are marked as INDIRECT because of LDADDR
1359 * opcodes.
1360 */
1361 if (! (inst->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT))) {
1362 if (slot_info->slots) {
1363 slot = GPOINTER_TO_INT (slot_info->slots->data);
1364
1365 slot_info->slots = slot_info->slots->next;
1366 }
1367
1368 /* FIXME: We might want to consider the inactive intervals as well if slot_info->slots is empty */
1369
1370 slot_info->active = mono_varlist_insert_sorted (cfg, slot_info->active, vmv, TRUE);
1371 }
1372 }
1373
1374 #if 0
1375 {
1376 static int count = 0;
1377 count ++;
1378
1379 if (count == atoi (g_getenv ("COUNT3")))
1380 printf ("LAST: %s\n", mono_method_full_name (cfg->method, TRUE));
1381 if (count > atoi (g_getenv ("COUNT3")))
1382 slot = 0xffffff;
1383 else {
1384 mono_print_ins (inst);
1385 }
1386 }
1387 #endif
1388
1389 LSCAN_DEBUG (printf ("R%d %s -> 0x%x\n", inst->dreg, mono_type_full_name (t), slot));
1390
1391 if (inst->flags & MONO_INST_LMF) {
1392 size = sizeof (MonoLMF);
1393 align = sizeof (mgreg_t);
1394 reuse_slot = FALSE;
1395 }
1396
1397 if (!reuse_slot)
1398 slot = 0xffffff;
1399
1400 if (slot == 0xffffff) {
1401 /*
1402 * Allways allocate valuetypes to sizeof (gpointer) to allow more
1403 * efficient copying (and to work around the fact that OP_MEMCPY
1404 * and OP_MEMSET ignores alignment).
1405 */
1406 if (MONO_TYPE_ISSTRUCT (t)) {
1407 align = MAX (align, sizeof (gpointer));
1408 align = MAX (align, mono_class_min_align (mono_class_from_mono_type (t)));
1409 }
1410
1411 if (backward) {
1412 offset += size;
1413 offset += align - 1;
1414 offset &= ~(align - 1);
1415 slot = offset;
1416 }
1417 else {
1418 offset += align - 1;
1419 offset &= ~(align - 1);
1420 slot = offset;
1421 offset += size;
1422 }
1423
1424 if (*stack_align == 0)
1425 *stack_align = align;
1426 }
1427
1428 offsets [vmv->idx] = slot;
1429 }
1430 g_list_free (vars);
1431 for (i = 0; i < MONO_TYPE_PINNED; ++i) {
1432 if (scalar_stack_slots [i].active)
1433 g_list_free (scalar_stack_slots [i].active);
1434 }
1435 for (i = 0; i < nvtypes; ++i) {
1436 if (vtype_stack_slots [i].active)
1437 g_list_free (vtype_stack_slots [i].active);
1438 }
1439
1440 cfg->stat_locals_stack_size += offset;
1441
1442 *stack_size = offset;
1443 return offsets;
1444 }
1445
1446 /*
1447 * mono_allocate_stack_slots:
1448 *
1449 * Allocate stack slots for all non register allocated variables using a
1450 * linear scan algorithm.
1451 * Returns: an array of stack offsets.
1452 * STACK_SIZE is set to the amount of stack space needed.
1453 * STACK_ALIGN is set to the alignment needed by the locals area.
1454 */
1455 gint32*
1456 mono_allocate_stack_slots (MonoCompile *cfg, gboolean backward, guint32 *stack_size, guint32 *stack_align)
1457 {
1458 int i, slot, offset, size;
1459 guint32 align;
1460 MonoMethodVar *vmv;
1461 MonoInst *inst;
1462 gint32 *offsets;
1463 GList *vars = NULL, *l;
1464 StackSlotInfo *scalar_stack_slots, *vtype_stack_slots, *slot_info;
1465 MonoType *t;
1466 int nvtypes;
1467 gboolean reuse_slot;
1468
1469 if ((cfg->num_varinfo > 0) && MONO_VARINFO (cfg, 0)->interval)
1470 return mono_allocate_stack_slots2 (cfg, backward, stack_size, stack_align);
1471
1472 scalar_stack_slots = (StackSlotInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (StackSlotInfo) * MONO_TYPE_PINNED);
1473 vtype_stack_slots = NULL;
1474 nvtypes = 0;
1475
1476 offsets = (gint32 *)mono_mempool_alloc (cfg->mempool, sizeof (gint32) * cfg->num_varinfo);
1477 for (i = 0; i < cfg->num_varinfo; ++i)
1478 offsets [i] = -1;
1479
1480 for (i = cfg->locals_start; i < cfg->num_varinfo; i++) {
1481 inst = cfg->varinfo [i];
1482 vmv = MONO_VARINFO (cfg, i);
1483
1484 if ((inst->flags & MONO_INST_IS_DEAD) || inst->opcode == OP_REGVAR || inst->opcode == OP_REGOFFSET)
1485 continue;
1486
1487 vars = g_list_prepend (vars, vmv);
1488 }
1489
1490 vars = mono_varlist_sort (cfg, vars, 0);
1491 offset = 0;
1492 *stack_align = sizeof(mgreg_t);
1493 for (l = vars; l; l = l->next) {
1494 vmv = (MonoMethodVar *)l->data;
1495 inst = cfg->varinfo [vmv->idx];
1496
1497 t = mono_type_get_underlying_type (inst->inst_vtype);
1498 if (cfg->gsharedvt && mini_is_gsharedvt_variable_type (t))
1499 continue;
1500
1501 /* inst->backend.is_pinvoke indicates native sized value types, this is used by the
1502 * pinvoke wrappers when they call functions returning structures */
1503 if (inst->backend.is_pinvoke && MONO_TYPE_ISSTRUCT (t) && t->type != MONO_TYPE_TYPEDBYREF) {
1504 size = mono_class_native_size (mono_class_from_mono_type (t), &align);
1505 } else {
1506 int ialign;
1507
1508 size = mini_type_stack_size (t, &ialign);
1509 align = ialign;
1510
1511 if (mono_class_has_failure (mono_class_from_mono_type (t)))
1512 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
1513
1514 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (t)))
1515 align = 16;
1516 }
1517
1518 reuse_slot = TRUE;
1519 if (cfg->disable_reuse_stack_slots)
1520 reuse_slot = FALSE;
1521
1522 t = mini_get_underlying_type (t);
1523 switch (t->type) {
1524 case MONO_TYPE_GENERICINST:
1525 if (!mono_type_generic_inst_is_valuetype (t)) {
1526 slot_info = &scalar_stack_slots [t->type];
1527 break;
1528 }
1529 /* Fall through */
1530 case MONO_TYPE_VALUETYPE:
1531 if (!vtype_stack_slots)
1532 vtype_stack_slots = (StackSlotInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (StackSlotInfo) * 256);
1533 for (i = 0; i < nvtypes; ++i)
1534 if (t->data.klass == vtype_stack_slots [i].vtype)
1535 break;
1536 if (i < nvtypes)
1537 slot_info = &vtype_stack_slots [i];
1538 else {
1539 g_assert (nvtypes < 256);
1540 vtype_stack_slots [nvtypes].vtype = t->data.klass;
1541 slot_info = &vtype_stack_slots [nvtypes];
1542 nvtypes ++;
1543 }
1544 if (cfg->disable_reuse_ref_stack_slots)
1545 reuse_slot = FALSE;
1546 break;
1547
1548 case MONO_TYPE_PTR:
1549 case MONO_TYPE_I:
1550 case MONO_TYPE_U:
1551 #if SIZEOF_VOID_P == 4
1552 case MONO_TYPE_I4:
1553 #else
1554 case MONO_TYPE_I8:
1555 #endif
1556 if (cfg->disable_ref_noref_stack_slot_share) {
1557 slot_info = &scalar_stack_slots [MONO_TYPE_I];
1558 break;
1559 }
1560 /* Fall through */
1561
1562 case MONO_TYPE_CLASS:
1563 case MONO_TYPE_OBJECT:
1564 case MONO_TYPE_ARRAY:
1565 case MONO_TYPE_SZARRAY:
1566 case MONO_TYPE_STRING:
1567 /* Share non-float stack slots of the same size */
1568 slot_info = &scalar_stack_slots [MONO_TYPE_CLASS];
1569 if (cfg->disable_reuse_ref_stack_slots)
1570 reuse_slot = FALSE;
1571 break;
1572 case MONO_TYPE_VAR:
1573 case MONO_TYPE_MVAR:
1574 slot_info = &scalar_stack_slots [t->type];
1575 break;
1576 default:
1577 slot_info = &scalar_stack_slots [t->type];
1578 break;
1579 }
1580
1581 slot = 0xffffff;
1582 if (cfg->comp_done & MONO_COMP_LIVENESS) {
1583 //printf ("START %2d %08x %08x\n", vmv->idx, vmv->range.first_use.abs_pos, vmv->range.last_use.abs_pos);
1584
1585 /* expire old intervals in active */
1586 while (slot_info->active) {
1587 MonoMethodVar *amv = (MonoMethodVar *)slot_info->active->data;
1588
1589 if (amv->range.last_use.abs_pos > vmv->range.first_use.abs_pos)
1590 break;
1591
1592 //printf ("EXPIR %2d %08x %08x C%d R%d\n", amv->idx, amv->range.first_use.abs_pos, amv->range.last_use.abs_pos, amv->spill_costs, amv->reg);
1593
1594 slot_info->active = g_list_delete_link (slot_info->active, slot_info->active);
1595 slot_info->slots = g_slist_prepend_mempool (cfg->mempool, slot_info->slots, GINT_TO_POINTER (offsets [amv->idx]));
1596 }
1597
1598 /*
1599 * This also handles the case when the variable is used in an
1600 * exception region, as liveness info is not computed there.
1601 */
1602 /*
1603 * FIXME: All valuetypes are marked as INDIRECT because of LDADDR
1604 * opcodes.
1605 */
1606 if (! (inst->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT))) {
1607 if (slot_info->slots) {
1608 slot = GPOINTER_TO_INT (slot_info->slots->data);
1609
1610 slot_info->slots = slot_info->slots->next;
1611 }
1612
1613 slot_info->active = mono_varlist_insert_sorted (cfg, slot_info->active, vmv, TRUE);
1614 }
1615 }
1616
1617 {
1618 static int count = 0;
1619 count ++;
1620
1621 /*
1622 if (count == atoi (g_getenv ("COUNT")))
1623 printf ("LAST: %s\n", mono_method_full_name (cfg->method, TRUE));
1624 if (count > atoi (g_getenv ("COUNT")))
1625 slot = 0xffffff;
1626 else {
1627 mono_print_ins (inst);
1628 }
1629 */
1630 }
1631
1632 if (inst->flags & MONO_INST_LMF) {
1633 /*
1634 * This variable represents a MonoLMF structure, which has no corresponding
1635 * CLR type, so hard-code its size/alignment.
1636 */
1637 size = sizeof (MonoLMF);
1638 align = sizeof (mgreg_t);
1639 reuse_slot = FALSE;
1640 }
1641
1642 if (!reuse_slot)
1643 slot = 0xffffff;
1644
1645 if (slot == 0xffffff) {
1646 /*
1647 * Allways allocate valuetypes to sizeof (gpointer) to allow more
1648 * efficient copying (and to work around the fact that OP_MEMCPY
1649 * and OP_MEMSET ignores alignment).
1650 */
1651 if (MONO_TYPE_ISSTRUCT (t)) {
1652 align = MAX (align, sizeof (gpointer));
1653 align = MAX (align, mono_class_min_align (mono_class_from_mono_type (t)));
1654 /*
1655 * Align the size too so the code generated for passing vtypes in
1656 * registers doesn't overwrite random locals.
1657 */
1658 size = (size + (align - 1)) & ~(align -1);
1659 }
1660
1661 if (backward) {
1662 offset += size;
1663 offset += align - 1;
1664 offset &= ~(align - 1);
1665 slot = offset;
1666 }
1667 else {
1668 offset += align - 1;
1669 offset &= ~(align - 1);
1670 slot = offset;
1671 offset += size;
1672 }
1673
1674 *stack_align = MAX (*stack_align, align);
1675 }
1676
1677 offsets [vmv->idx] = slot;
1678 }
1679 g_list_free (vars);
1680 for (i = 0; i < MONO_TYPE_PINNED; ++i) {
1681 if (scalar_stack_slots [i].active)
1682 g_list_free (scalar_stack_slots [i].active);
1683 }
1684 for (i = 0; i < nvtypes; ++i) {
1685 if (vtype_stack_slots [i].active)
1686 g_list_free (vtype_stack_slots [i].active);
1687 }
1688
1689 cfg->stat_locals_stack_size += offset;
1690
1691 *stack_size = offset;
1692 return offsets;
1693 }
1694
1695 #define EMUL_HIT_SHIFT 3
1696 #define EMUL_HIT_MASK ((1 << EMUL_HIT_SHIFT) - 1)
1697 /* small hit bitmap cache */
1698 static mono_byte emul_opcode_hit_cache [(OP_LAST>>EMUL_HIT_SHIFT) + 1] = {0};
1699 static short emul_opcode_num = 0;
1700 static short emul_opcode_alloced = 0;
1701 static short *emul_opcode_opcodes;
1702 static MonoJitICallInfo **emul_opcode_map;
1703
1704 MonoJitICallInfo *
1705 mono_find_jit_opcode_emulation (int opcode)
1706 {
1707 g_assert (opcode >= 0 && opcode <= OP_LAST);
1708 if (emul_opcode_hit_cache [opcode >> (EMUL_HIT_SHIFT + 3)] & (1 << (opcode & EMUL_HIT_MASK))) {
1709 int i;
1710 for (i = 0; i < emul_opcode_num; ++i) {
1711 if (emul_opcode_opcodes [i] == opcode)
1712 return emul_opcode_map [i];
1713 }
1714 }
1715 return NULL;
1716 }
1717
1718 void
1719 mini_register_opcode_emulation (int opcode, const char *name, const char *sigstr, gpointer func, const char *symbol, gboolean no_throw)
1720 {
1721 MonoJitICallInfo *info;
1722 MonoMethodSignature *sig = mono_create_icall_signature (sigstr);
1723
1724 g_assert (!sig->hasthis);
1725 g_assert (sig->param_count < 3);
1726
1727 /* Opcode emulation functions are assumed to don't call mono_raise_exception () */
1728 info = mono_register_jit_icall_full (func, name, sig, no_throw, TRUE, symbol);
1729
1730 if (emul_opcode_num >= emul_opcode_alloced) {
1731 int incr = emul_opcode_alloced? emul_opcode_alloced/2: 16;
1732 emul_opcode_alloced += incr;
1733 emul_opcode_map = (MonoJitICallInfo **)g_realloc (emul_opcode_map, sizeof (emul_opcode_map [0]) * emul_opcode_alloced);
1734 emul_opcode_opcodes = (short *)g_realloc (emul_opcode_opcodes, sizeof (emul_opcode_opcodes [0]) * emul_opcode_alloced);
1735 }
1736 emul_opcode_map [emul_opcode_num] = info;
1737 emul_opcode_opcodes [emul_opcode_num] = opcode;
1738 emul_opcode_num++;
1739 emul_opcode_hit_cache [opcode >> (EMUL_HIT_SHIFT + 3)] |= (1 << (opcode & EMUL_HIT_MASK));
1740 }
1741
1742 static void
1743 print_dfn (MonoCompile *cfg)
1744 {
1745 int i, j;
1746 char *code;
1747 MonoBasicBlock *bb;
1748 MonoInst *c;
1749
1750 {
1751 char *method_name = mono_method_full_name (cfg->method, TRUE);
1752 g_print ("IR code for method %s\n", method_name);
1753 g_free (method_name);
1754 }
1755
1756 for (i = 0; i < cfg->num_bblocks; ++i) {
1757 bb = cfg->bblocks [i];
1758 /*if (bb->cil_code) {
1759 char* code1, *code2;
1760 code1 = mono_disasm_code_one (NULL, cfg->method, bb->cil_code, NULL);
1761 if (bb->last_ins->cil_code)
1762 code2 = mono_disasm_code_one (NULL, cfg->method, bb->last_ins->cil_code, NULL);
1763 else
1764 code2 = g_strdup ("");
1765
1766 code1 [strlen (code1) - 1] = 0;
1767 code = g_strdup_printf ("%s -> %s", code1, code2);
1768 g_free (code1);
1769 g_free (code2);
1770 } else*/
1771 code = g_strdup ("\n");
1772 g_print ("\nBB%d (%d) (len: %d): %s", bb->block_num, i, bb->cil_length, code);
1773 MONO_BB_FOR_EACH_INS (bb, c) {
1774 mono_print_ins_index (-1, c);
1775 }
1776
1777 g_print ("\tprev:");
1778 for (j = 0; j < bb->in_count; ++j) {
1779 g_print (" BB%d", bb->in_bb [j]->block_num);
1780 }
1781 g_print ("\t\tsucc:");
1782 for (j = 0; j < bb->out_count; ++j) {
1783 g_print (" BB%d", bb->out_bb [j]->block_num);
1784 }
1785 g_print ("\n\tidom: BB%d\n", bb->idom? bb->idom->block_num: -1);
1786
1787 if (bb->idom)
1788 g_assert (mono_bitset_test_fast (bb->dominators, bb->idom->dfn));
1789
1790 if (bb->dominators)
1791 mono_blockset_print (cfg, bb->dominators, "\tdominators", bb->idom? bb->idom->dfn: -1);
1792 if (bb->dfrontier)
1793 mono_blockset_print (cfg, bb->dfrontier, "\tdfrontier", -1);
1794 g_free (code);
1795 }
1796
1797 g_print ("\n");
1798 }
1799
1800 void
1801 mono_bblock_add_inst (MonoBasicBlock *bb, MonoInst *inst)
1802 {
1803 MONO_ADD_INS (bb, inst);
1804 }
1805
1806 void
1807 mono_bblock_insert_after_ins (MonoBasicBlock *bb, MonoInst *ins, MonoInst *ins_to_insert)
1808 {
1809 if (ins == NULL) {
1810 ins = bb->code;
1811 bb->code = ins_to_insert;
1812
1813 /* Link with next */
1814 ins_to_insert->next = ins;
1815 if (ins)
1816 ins->prev = ins_to_insert;
1817
1818 if (bb->last_ins == NULL)
1819 bb->last_ins = ins_to_insert;
1820 } else {
1821 /* Link with next */
1822 ins_to_insert->next = ins->next;
1823 if (ins->next)
1824 ins->next->prev = ins_to_insert;
1825
1826 /* Link with previous */
1827 ins->next = ins_to_insert;
1828 ins_to_insert->prev = ins;
1829
1830 if (bb->last_ins == ins)
1831 bb->last_ins = ins_to_insert;
1832 }
1833 }
1834
1835 void
1836 mono_bblock_insert_before_ins (MonoBasicBlock *bb, MonoInst *ins, MonoInst *ins_to_insert)
1837 {
1838 if (ins == NULL) {
1839 ins = bb->code;
1840 if (ins)
1841 ins->prev = ins_to_insert;
1842 bb->code = ins_to_insert;
1843 ins_to_insert->next = ins;
1844 if (bb->last_ins == NULL)
1845 bb->last_ins = ins_to_insert;
1846 } else {
1847 /* Link with previous */
1848 if (ins->prev)
1849 ins->prev->next = ins_to_insert;
1850 ins_to_insert->prev = ins->prev;
1851
1852 /* Link with next */
1853 ins->prev = ins_to_insert;
1854 ins_to_insert->next = ins;
1855
1856 if (bb->code == ins)
1857 bb->code = ins_to_insert;
1858 }
1859 }
1860
1861 /*
1862 * mono_verify_bblock:
1863 *
1864 * Verify that the next and prev pointers are consistent inside the instructions in BB.
1865 */
1866 void
1867 mono_verify_bblock (MonoBasicBlock *bb)
1868 {
1869 MonoInst *ins, *prev;
1870
1871 prev = NULL;
1872 for (ins = bb->code; ins; ins = ins->next) {
1873 g_assert (ins->prev == prev);
1874 prev = ins;
1875 }
1876 if (bb->last_ins)
1877 g_assert (!bb->last_ins->next);
1878 }
1879
1880 /*
1881 * mono_verify_cfg:
1882 *
1883 * Perform consistency checks on the JIT data structures and the IR
1884 */
1885 void
1886 mono_verify_cfg (MonoCompile *cfg)
1887 {
1888 MonoBasicBlock *bb;
1889
1890 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
1891 mono_verify_bblock (bb);
1892 }
1893
1894 // This will free many fields in cfg to save
1895 // memory. Note that this must be safe to call
1896 // multiple times. It must be idempotent.
1897 void
1898 mono_empty_compile (MonoCompile *cfg)
1899 {
1900 mono_free_loop_info (cfg);
1901
1902 // These live in the mempool, and so must be freed
1903 // first
1904 for (GSList *l = cfg->headers_to_free; l; l = l->next) {
1905 mono_metadata_free_mh ((MonoMethodHeader *)l->data);
1906 }
1907 cfg->headers_to_free = NULL;
1908
1909 if (cfg->mempool) {
1910 //mono_mempool_stats (cfg->mempool);
1911 mono_mempool_destroy (cfg->mempool);
1912 cfg->mempool = NULL;
1913 }
1914
1915 g_free (cfg->varinfo);
1916 cfg->varinfo = NULL;
1917
1918 g_free (cfg->vars);
1919 cfg->vars = NULL;
1920
1921 if (cfg->rs) {
1922 mono_regstate_free (cfg->rs);
1923 cfg->rs = NULL;
1924 }
1925 }
1926
1927 void
1928 mono_destroy_compile (MonoCompile *cfg)
1929 {
1930 mono_empty_compile (cfg);
1931
1932 if (cfg->header)
1933 mono_metadata_free_mh (cfg->header);
1934
1935 if (cfg->spvars)
1936 g_hash_table_destroy (cfg->spvars);
1937 if (cfg->exvars)
1938 g_hash_table_destroy (cfg->exvars);
1939
1940 g_list_free (cfg->ldstr_list);
1941
1942 if (cfg->token_info_hash)
1943 g_hash_table_destroy (cfg->token_info_hash);
1944
1945 if (cfg->abs_patches)
1946 g_hash_table_destroy (cfg->abs_patches);
1947
1948 mono_debug_free_method (cfg);
1949
1950 g_free (cfg->varinfo);
1951 g_free (cfg->vars);
1952 g_free (cfg->exception_message);
1953 g_free (cfg);
1954 }
1955
1956 void
1957 mono_add_patch_info (MonoCompile *cfg, int ip, MonoJumpInfoType type, gconstpointer target)
1958 {
1959 MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfo));
1960
1961 ji->ip.i = ip;
1962 ji->type = type;
1963 ji->data.target = target;
1964 ji->next = cfg->patch_info;
1965
1966 cfg->patch_info = ji;
1967 }
1968
1969 void
1970 mono_add_patch_info_rel (MonoCompile *cfg, int ip, MonoJumpInfoType type, gconstpointer target, int relocation)
1971 {
1972 MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfo));
1973
1974 ji->ip.i = ip;
1975 ji->type = type;
1976 ji->relocation = relocation;
1977 ji->data.target = target;
1978 ji->next = cfg->patch_info;
1979
1980 cfg->patch_info = ji;
1981 }
1982
1983 void
1984 mono_remove_patch_info (MonoCompile *cfg, int ip)
1985 {
1986 MonoJumpInfo **ji = &cfg->patch_info;
1987
1988 while (*ji) {
1989 if ((*ji)->ip.i == ip)
1990 *ji = (*ji)->next;
1991 else
1992 ji = &((*ji)->next);
1993 }
1994 }
1995
1996 void
1997 mono_add_seq_point (MonoCompile *cfg, MonoBasicBlock *bb, MonoInst *ins, int native_offset)
1998 {
1999 ins->inst_offset = native_offset;
2000 g_ptr_array_add (cfg->seq_points, ins);
2001 if (bb) {
2002 bb->seq_points = g_slist_prepend_mempool (cfg->mempool, bb->seq_points, ins);
2003 bb->last_seq_point = ins;
2004 }
2005 }
2006
2007 void
2008 mono_add_var_location (MonoCompile *cfg, MonoInst *var, gboolean is_reg, int reg, int offset, int from, int to)
2009 {
2010 MonoDwarfLocListEntry *entry = (MonoDwarfLocListEntry *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDwarfLocListEntry));
2011
2012 if (is_reg)
2013 g_assert (offset == 0);
2014
2015 entry->is_reg = is_reg;
2016 entry->reg = reg;
2017 entry->offset = offset;
2018 entry->from = from;
2019 entry->to = to;
2020
2021 if (var == cfg->args [0])
2022 cfg->this_loclist = g_slist_append_mempool (cfg->mempool, cfg->this_loclist, entry);
2023 else if (var == cfg->rgctx_var)
2024 cfg->rgctx_loclist = g_slist_append_mempool (cfg->mempool, cfg->rgctx_loclist, entry);
2025 }
2026
2027 static void
2028 mono_compile_create_vars (MonoCompile *cfg)
2029 {
2030 MonoMethodSignature *sig;
2031 MonoMethodHeader *header;
2032 int i;
2033
2034 header = cfg->header;
2035
2036 sig = mono_method_signature (cfg->method);
2037
2038 if (!MONO_TYPE_IS_VOID (sig->ret)) {
2039 cfg->ret = mono_compile_create_var (cfg, sig->ret, OP_ARG);
2040 /* Inhibit optimizations */
2041 cfg->ret->flags |= MONO_INST_VOLATILE;
2042 }
2043 if (cfg->verbose_level > 2)
2044 g_print ("creating vars\n");
2045
2046 cfg->args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, (sig->param_count + sig->hasthis) * sizeof (MonoInst*));
2047
2048 if (sig->hasthis) {
2049 cfg->args [0] = mono_compile_create_var (cfg, &cfg->method->klass->this_arg, OP_ARG);
2050 cfg->this_arg = cfg->args [0];
2051 }
2052
2053 for (i = 0; i < sig->param_count; ++i) {
2054 cfg->args [i + sig->hasthis] = mono_compile_create_var (cfg, sig->params [i], OP_ARG);
2055 }
2056
2057 if (cfg->verbose_level > 2) {
2058 if (cfg->ret) {
2059 printf ("\treturn : ");
2060 mono_print_ins (cfg->ret);
2061 }
2062
2063 if (sig->hasthis) {
2064 printf ("\tthis: ");
2065 mono_print_ins (cfg->args [0]);
2066 }
2067
2068 for (i = 0; i < sig->param_count; ++i) {
2069 printf ("\targ [%d]: ", i);
2070 mono_print_ins (cfg->args [i + sig->hasthis]);
2071 }
2072 }
2073
2074 cfg->locals_start = cfg->num_varinfo;
2075 cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, header->num_locals * sizeof (MonoInst*));
2076
2077 if (cfg->verbose_level > 2)
2078 g_print ("creating locals\n");
2079
2080 for (i = 0; i < header->num_locals; ++i)
2081 cfg->locals [i] = mono_compile_create_var (cfg, header->locals [i], OP_LOCAL);
2082
2083 if (cfg->verbose_level > 2)
2084 g_print ("locals done\n");
2085
2086 #ifdef ENABLE_LLVM
2087 if (COMPILE_LLVM (cfg))
2088 mono_llvm_create_vars (cfg);
2089 else
2090 mono_arch_create_vars (cfg);
2091 #else
2092 mono_arch_create_vars (cfg);
2093 #endif
2094
2095 if (cfg->method->save_lmf && cfg->create_lmf_var) {
2096 MonoInst *lmf_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2097 lmf_var->flags |= MONO_INST_VOLATILE;
2098 lmf_var->flags |= MONO_INST_LMF;
2099 cfg->lmf_var = lmf_var;
2100 }
2101 }
2102
2103 void
2104 mono_print_code (MonoCompile *cfg, const char* msg)
2105 {
2106 MonoBasicBlock *bb;
2107
2108 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
2109 mono_print_bb (bb, msg);
2110 }
2111
2112 static void
2113 mono_postprocess_patches (MonoCompile *cfg)
2114 {
2115 MonoJumpInfo *patch_info;
2116 int i;
2117
2118 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
2119 switch (patch_info->type) {
2120 case MONO_PATCH_INFO_ABS: {
2121 MonoJitICallInfo *info = mono_find_jit_icall_by_addr (patch_info->data.target);
2122
2123 /*
2124 * Change patches of type MONO_PATCH_INFO_ABS into patches describing the
2125 * absolute address.
2126 */
2127 if (info) {
2128 //printf ("TEST %s %p\n", info->name, patch_info->data.target);
2129 /* for these array methods we currently register the same function pointer
2130 * since it's a vararg function. But this means that mono_find_jit_icall_by_addr ()
2131 * will return the incorrect one depending on the order they are registered.
2132 * See tests/test-arr.cs
2133 */
2134 if (strstr (info->name, "ves_array_new_va_") == NULL && strstr (info->name, "ves_array_element_address_") == NULL) {
2135 patch_info->type = MONO_PATCH_INFO_INTERNAL_METHOD;
2136 patch_info->data.name = info->name;
2137 }
2138 }
2139
2140 if (patch_info->type == MONO_PATCH_INFO_ABS) {
2141 if (cfg->abs_patches) {
2142 MonoJumpInfo *abs_ji = (MonoJumpInfo *)g_hash_table_lookup (cfg->abs_patches, patch_info->data.target);
2143 if (abs_ji) {
2144 patch_info->type = abs_ji->type;
2145 patch_info->data.target = abs_ji->data.target;
2146 }
2147 }
2148 }
2149
2150 break;
2151 }
2152 case MONO_PATCH_INFO_SWITCH: {
2153 gpointer *table;
2154 if (cfg->method->dynamic) {
2155 table = (void **)mono_code_manager_reserve (cfg->dynamic_info->code_mp, sizeof (gpointer) * patch_info->data.table->table_size);
2156 } else {
2157 table = (void **)mono_domain_code_reserve (cfg->domain, sizeof (gpointer) * patch_info->data.table->table_size);
2158 }
2159
2160 for (i = 0; i < patch_info->data.table->table_size; i++) {
2161 /* Might be NULL if the switch is eliminated */
2162 if (patch_info->data.table->table [i]) {
2163 g_assert (patch_info->data.table->table [i]->native_offset);
2164 table [i] = GINT_TO_POINTER (patch_info->data.table->table [i]->native_offset);
2165 } else {
2166 table [i] = NULL;
2167 }
2168 }
2169 patch_info->data.table->table = (MonoBasicBlock**)table;
2170 break;
2171 }
2172 case MONO_PATCH_INFO_METHOD_JUMP: {
2173 MonoJumpList *jlist;
2174 MonoDomain *domain = cfg->domain;
2175 unsigned char *ip = cfg->native_code + patch_info->ip.i;
2176
2177 mono_domain_lock (domain);
2178 jlist = (MonoJumpList *)g_hash_table_lookup (domain_jit_info (domain)->jump_target_hash, patch_info->data.method);
2179 if (!jlist) {
2180 jlist = (MonoJumpList *)mono_domain_alloc0 (domain, sizeof (MonoJumpList));
2181 g_hash_table_insert (domain_jit_info (domain)->jump_target_hash, patch_info->data.method, jlist);
2182 }
2183 jlist->list = g_slist_prepend (jlist->list, ip);
2184 mono_domain_unlock (domain);
2185 break;
2186 }
2187 default:
2188 /* do nothing */
2189 break;
2190 }
2191 }
2192 }
2193
2194 void
2195 mono_codegen (MonoCompile *cfg)
2196 {
2197 MonoBasicBlock *bb;
2198 int max_epilog_size;
2199 guint8 *code;
2200 MonoDomain *code_domain;
2201 guint unwindlen = 0;
2202
2203 if (mono_using_xdebug)
2204 /*
2205 * Recent gdb versions have trouble processing symbol files containing
2206 * overlapping address ranges, so allocate all code from the code manager
2207 * of the root domain. (#666152).
2208 */
2209 code_domain = mono_get_root_domain ();
2210 else
2211 code_domain = cfg->domain;
2212
2213 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2214 cfg->spill_count = 0;
2215 /* we reuse dfn here */
2216 /* bb->dfn = bb_count++; */
2217
2218 mono_arch_lowering_pass (cfg, bb);
2219
2220 if (cfg->opt & MONO_OPT_PEEPHOLE)
2221 mono_arch_peephole_pass_1 (cfg, bb);
2222
2223 mono_local_regalloc (cfg, bb);
2224
2225 if (cfg->opt & MONO_OPT_PEEPHOLE)
2226 mono_arch_peephole_pass_2 (cfg, bb);
2227
2228 if (cfg->gen_seq_points && !cfg->gen_sdb_seq_points)
2229 mono_bb_deduplicate_op_il_seq_points (cfg, bb);
2230 }
2231
2232 code = mono_arch_emit_prolog (cfg);
2233
2234 cfg->code_len = code - cfg->native_code;
2235 cfg->prolog_end = cfg->code_len;
2236 cfg->cfa_reg = cfg->cur_cfa_reg;
2237 cfg->cfa_offset = cfg->cur_cfa_offset;
2238
2239 mono_debug_open_method (cfg);
2240
2241 /* emit code all basic blocks */
2242 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2243 bb->native_offset = cfg->code_len;
2244 bb->real_native_offset = cfg->code_len;
2245 //if ((bb == cfg->bb_entry) || !(bb->region == -1 && !bb->dfn))
2246 mono_arch_output_basic_block (cfg, bb);
2247 bb->native_length = cfg->code_len - bb->native_offset;
2248
2249 if (bb == cfg->bb_exit) {
2250 cfg->epilog_begin = cfg->code_len;
2251 mono_arch_emit_epilog (cfg);
2252 cfg->epilog_end = cfg->code_len;
2253 }
2254 }
2255
2256 mono_arch_emit_exceptions (cfg);
2257
2258 max_epilog_size = 0;
2259
2260 /* we always allocate code in cfg->domain->code_mp to increase locality */
2261 cfg->code_size = cfg->code_len + max_epilog_size;
2262
2263 /* fixme: align to MONO_ARCH_CODE_ALIGNMENT */
2264
2265 #ifdef MONO_ARCH_HAVE_UNWIND_TABLE
2266 unwindlen = mono_arch_unwindinfo_init_method_unwind_info (cfg);
2267 #endif
2268
2269 if (cfg->method->dynamic) {
2270 /* Allocate the code into a separate memory pool so it can be freed */
2271 cfg->dynamic_info = g_new0 (MonoJitDynamicMethodInfo, 1);
2272 cfg->dynamic_info->code_mp = mono_code_manager_new_dynamic ();
2273 mono_domain_lock (cfg->domain);
2274 mono_dynamic_code_hash_insert (cfg->domain, cfg->method, cfg->dynamic_info);
2275 mono_domain_unlock (cfg->domain);
2276
2277 if (mono_using_xdebug)
2278 /* See the comment for cfg->code_domain */
2279 code = (guint8 *)mono_domain_code_reserve (code_domain, cfg->code_size + cfg->thunk_area + unwindlen);
2280 else
2281 code = (guint8 *)mono_code_manager_reserve (cfg->dynamic_info->code_mp, cfg->code_size + cfg->thunk_area + unwindlen);
2282 } else {
2283 code = (guint8 *)mono_domain_code_reserve (code_domain, cfg->code_size + cfg->thunk_area + unwindlen);
2284 }
2285
2286 if (cfg->thunk_area) {
2287 cfg->thunks_offset = cfg->code_size + unwindlen;
2288 cfg->thunks = code + cfg->thunks_offset;
2289 memset (cfg->thunks, 0, cfg->thunk_area);
2290 }
2291
2292 g_assert (code);
2293 memcpy (code, cfg->native_code, cfg->code_len);
2294 g_free (cfg->native_code);
2295 cfg->native_code = code;
2296 code = cfg->native_code + cfg->code_len;
2297
2298 /* g_assert (((int)cfg->native_code & (MONO_ARCH_CODE_ALIGNMENT - 1)) == 0); */
2299 mono_postprocess_patches (cfg);
2300
2301 #ifdef VALGRIND_JIT_REGISTER_MAP
2302 if (valgrind_register){
2303 char* nm = mono_method_full_name (cfg->method, TRUE);
2304 VALGRIND_JIT_REGISTER_MAP (nm, cfg->native_code, cfg->native_code + cfg->code_len);
2305 g_free (nm);
2306 }
2307 #endif
2308
2309 if (cfg->verbose_level > 0) {
2310 char* nm = mono_method_get_full_name (cfg->method);
2311 g_print ("Method %s emitted at %p to %p (code length %d) [%s]\n",
2312 nm,
2313 cfg->native_code, cfg->native_code + cfg->code_len, cfg->code_len, cfg->domain->friendly_name);
2314 g_free (nm);
2315 }
2316
2317 {
2318 gboolean is_generic = FALSE;
2319
2320 if (cfg->method->is_inflated || mono_method_get_generic_container (cfg->method) ||
2321 mono_class_is_gtd (cfg->method->klass) || mono_class_is_ginst (cfg->method->klass)) {
2322 is_generic = TRUE;
2323 }
2324
2325 if (cfg->gshared)
2326 g_assert (is_generic);
2327 }
2328
2329 #ifdef MONO_ARCH_HAVE_SAVE_UNWIND_INFO
2330 mono_arch_save_unwind_info (cfg);
2331 #endif
2332
2333 #ifdef MONO_ARCH_HAVE_PATCH_CODE_NEW
2334 {
2335 MonoJumpInfo *ji;
2336 gpointer target;
2337
2338 for (ji = cfg->patch_info; ji; ji = ji->next) {
2339 if (cfg->compile_aot) {
2340 switch (ji->type) {
2341 case MONO_PATCH_INFO_BB:
2342 case MONO_PATCH_INFO_LABEL:
2343 break;
2344 default:
2345 /* No need to patch these */
2346 continue;
2347 }
2348 }
2349
2350 if (ji->type == MONO_PATCH_INFO_NONE)
2351 continue;
2352
2353 target = mono_resolve_patch_target (cfg->method, cfg->domain, cfg->native_code, ji, cfg->run_cctors, &cfg->error);
2354 if (!mono_error_ok (&cfg->error)) {
2355 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
2356 return;
2357 }
2358 mono_arch_patch_code_new (cfg, cfg->domain, cfg->native_code, ji, target);
2359 }
2360 }
2361 #else
2362 mono_arch_patch_code (cfg, cfg->method, cfg->domain, cfg->native_code, cfg->patch_info, cfg->run_cctors, &cfg->error);
2363 if (!is_ok (&cfg->error)) {
2364 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
2365 return;
2366 }
2367 #endif
2368
2369 if (cfg->method->dynamic) {
2370 if (mono_using_xdebug)
2371 mono_domain_code_commit (code_domain, cfg->native_code, cfg->code_size, cfg->code_len);
2372 else
2373 mono_code_manager_commit (cfg->dynamic_info->code_mp, cfg->native_code, cfg->code_size, cfg->code_len);
2374 } else {
2375 mono_domain_code_commit (code_domain, cfg->native_code, cfg->code_size, cfg->code_len);
2376 }
2377 MONO_PROFILER_RAISE (jit_code_buffer, (cfg->native_code, cfg->code_len, MONO_PROFILER_CODE_BUFFER_METHOD, cfg->method));
2378
2379 mono_arch_flush_icache (cfg->native_code, cfg->code_len);
2380
2381 mono_debug_close_method (cfg);
2382
2383 #ifdef MONO_ARCH_HAVE_UNWIND_TABLE
2384 mono_arch_unwindinfo_install_method_unwind_info (&cfg->arch.unwindinfo, cfg->native_code, cfg->code_len);
2385 #endif
2386 }
2387
2388 static void
2389 compute_reachable (MonoBasicBlock *bb)
2390 {
2391 int i;
2392
2393 if (!(bb->flags & BB_VISITED)) {
2394 bb->flags |= BB_VISITED;
2395 for (i = 0; i < bb->out_count; ++i)
2396 compute_reachable (bb->out_bb [i]);
2397 }
2398 }
2399
2400 static void mono_bb_ordering (MonoCompile *cfg)
2401 {
2402 int dfn = 0;
2403 /* Depth-first ordering on basic blocks */
2404 cfg->bblocks = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * (cfg->num_bblocks + 1));
2405
2406 cfg->max_block_num = cfg->num_bblocks;
2407
2408 df_visit (cfg->bb_entry, &dfn, cfg->bblocks);
2409 if (cfg->num_bblocks != dfn + 1) {
2410 MonoBasicBlock *bb;
2411
2412 cfg->num_bblocks = dfn + 1;
2413
2414 /* remove unreachable code, because the code in them may be
2415 * inconsistent (access to dead variables for example) */
2416 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
2417 bb->flags &= ~BB_VISITED;
2418 compute_reachable (cfg->bb_entry);
2419 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
2420 if (bb->flags & BB_EXCEPTION_HANDLER)
2421 compute_reachable (bb);
2422 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2423 if (!(bb->flags & BB_VISITED)) {
2424 if (cfg->verbose_level > 1)
2425 g_print ("found unreachable code in BB%d\n", bb->block_num);
2426 bb->code = bb->last_ins = NULL;
2427 while (bb->out_count)
2428 mono_unlink_bblock (cfg, bb, bb->out_bb [0]);
2429 }
2430 }
2431 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
2432 bb->flags &= ~BB_VISITED;
2433 }
2434 }
2435
2436 static void
2437 mono_handle_out_of_line_bblock (MonoCompile *cfg)
2438 {
2439 MonoBasicBlock *bb;
2440 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2441 if (bb->next_bb && bb->next_bb->out_of_line && bb->last_ins && !MONO_IS_BRANCH_OP (bb->last_ins)) {
2442 MonoInst *ins;
2443 MONO_INST_NEW (cfg, ins, OP_BR);
2444 MONO_ADD_INS (bb, ins);
2445 ins->inst_target_bb = bb->next_bb;
2446 }
2447 }
2448 }
2449
2450 static MonoJitInfo*
2451 create_jit_info (MonoCompile *cfg, MonoMethod *method_to_compile)
2452 {
2453 GSList *tmp;
2454 MonoMethodHeader *header;
2455 MonoJitInfo *jinfo;
2456 MonoJitInfoFlags flags = JIT_INFO_NONE;
2457 int num_clauses, num_holes = 0;
2458 guint32 stack_size = 0;
2459
2460 g_assert (method_to_compile == cfg->method);
2461 header = cfg->header;
2462
2463 if (cfg->gshared)
2464 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_GENERIC_JIT_INFO);
2465
2466 if (cfg->arch_eh_jit_info) {
2467 MonoJitArgumentInfo *arg_info;
2468 MonoMethodSignature *sig = mono_method_signature (cfg->method_to_register);
2469
2470 /*
2471 * This cannot be computed during stack walking, as
2472 * mono_arch_get_argument_info () is not signal safe.
2473 */
2474 arg_info = g_newa (MonoJitArgumentInfo, sig->param_count + 1);
2475 stack_size = mono_arch_get_argument_info (sig, sig->param_count, arg_info);
2476
2477 if (stack_size)
2478 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_ARCH_EH_INFO);
2479 }
2480
2481 if (cfg->has_unwind_info_for_epilog && !(flags & JIT_INFO_HAS_ARCH_EH_INFO))
2482 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_ARCH_EH_INFO);
2483
2484 if (cfg->thunk_area)
2485 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_THUNK_INFO);
2486
2487 if (cfg->try_block_holes) {
2488 for (tmp = cfg->try_block_holes; tmp; tmp = tmp->next) {
2489 TryBlockHole *hole = (TryBlockHole *)tmp->data;
2490 MonoExceptionClause *ec = hole->clause;
2491 int hole_end = hole->basic_block->native_offset + hole->basic_block->native_length;
2492 MonoBasicBlock *clause_last_bb = cfg->cil_offset_to_bb [ec->try_offset + ec->try_len];
2493 g_assert (clause_last_bb);
2494
2495 /* Holes at the end of a try region can be represented by simply reducing the size of the block itself.*/
2496 if (clause_last_bb->native_offset != hole_end)
2497 ++num_holes;
2498 }
2499 if (num_holes)
2500 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_TRY_BLOCK_HOLES);
2501 if (G_UNLIKELY (cfg->verbose_level >= 4))
2502 printf ("Number of try block holes %d\n", num_holes);
2503 }
2504
2505 if (COMPILE_LLVM (cfg))
2506 num_clauses = cfg->llvm_ex_info_len;
2507 else
2508 num_clauses = header->num_clauses;
2509
2510 if (cfg->method->dynamic)
2511 jinfo = (MonoJitInfo *)g_malloc0 (mono_jit_info_size (flags, num_clauses, num_holes));
2512 else
2513 jinfo = (MonoJitInfo *)mono_domain_alloc0 (cfg->domain, mono_jit_info_size (flags, num_clauses, num_holes));
2514 mono_jit_info_init (jinfo, cfg->method_to_register, cfg->native_code, cfg->code_len, flags, num_clauses, num_holes);
2515 jinfo->domain_neutral = (cfg->opt & MONO_OPT_SHARED) != 0;
2516
2517 if (COMPILE_LLVM (cfg))
2518 jinfo->from_llvm = TRUE;
2519
2520 if (cfg->gshared) {
2521 MonoInst *inst;
2522 MonoGenericJitInfo *gi;
2523 GSList *loclist = NULL;
2524
2525 gi = mono_jit_info_get_generic_jit_info (jinfo);
2526 g_assert (gi);
2527
2528 if (cfg->method->dynamic)
2529 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2530 else
2531 gi->generic_sharing_context = (MonoGenericSharingContext *)mono_domain_alloc0 (cfg->domain, sizeof (MonoGenericSharingContext));
2532 mini_init_gsctx (cfg->method->dynamic ? NULL : cfg->domain, NULL, cfg->gsctx_context, gi->generic_sharing_context);
2533
2534 if ((method_to_compile->flags & METHOD_ATTRIBUTE_STATIC) ||
2535 mini_method_get_context (method_to_compile)->method_inst ||
2536 method_to_compile->klass->valuetype) {
2537 g_assert (cfg->rgctx_var);
2538 }
2539
2540 gi->has_this = 1;
2541
2542 if ((method_to_compile->flags & METHOD_ATTRIBUTE_STATIC) ||
2543 mini_method_get_context (method_to_compile)->method_inst ||
2544 method_to_compile->klass->valuetype) {
2545 inst = cfg->rgctx_var;
2546 if (!COMPILE_LLVM (cfg))
2547 g_assert (inst->opcode == OP_REGOFFSET);
2548 loclist = cfg->rgctx_loclist;
2549 } else {
2550 inst = cfg->args [0];
2551 loclist = cfg->this_loclist;
2552 }
2553
2554 if (loclist) {
2555 /* Needed to handle async exceptions */
2556 GSList *l;
2557 int i;
2558
2559 gi->nlocs = g_slist_length (loclist);
2560 if (cfg->method->dynamic)
2561 gi->locations = (MonoDwarfLocListEntry *)g_malloc0 (gi->nlocs * sizeof (MonoDwarfLocListEntry));
2562 else
2563 gi->locations = (MonoDwarfLocListEntry *)mono_domain_alloc0 (cfg->domain, gi->nlocs * sizeof (MonoDwarfLocListEntry));
2564 i = 0;
2565 for (l = loclist; l; l = l->next) {
2566 memcpy (&(gi->locations [i]), l->data, sizeof (MonoDwarfLocListEntry));
2567 i ++;
2568 }
2569 }
2570
2571 if (COMPILE_LLVM (cfg)) {
2572 g_assert (cfg->llvm_this_reg != -1);
2573 gi->this_in_reg = 0;
2574 gi->this_reg = cfg->llvm_this_reg;
2575 gi->this_offset = cfg->llvm_this_offset;
2576 } else if (inst->opcode == OP_REGVAR) {
2577 gi->this_in_reg = 1;
2578 gi->this_reg = inst->dreg;
2579 } else {
2580 g_assert (inst->opcode == OP_REGOFFSET);
2581 #ifdef TARGET_X86
2582 g_assert (inst->inst_basereg == X86_EBP);
2583 #elif defined(TARGET_AMD64)
2584 g_assert (inst->inst_basereg == X86_EBP || inst->inst_basereg == X86_ESP);
2585 #endif
2586 g_assert (inst->inst_offset >= G_MININT32 && inst->inst_offset <= G_MAXINT32);
2587
2588 gi->this_in_reg = 0;
2589 gi->this_reg = inst->inst_basereg;
2590 gi->this_offset = inst->inst_offset;
2591 }
2592 }
2593
2594 if (num_holes) {
2595 MonoTryBlockHoleTableJitInfo *table;
2596 int i;
2597
2598 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2599 table->num_holes = (guint16)num_holes;
2600 i = 0;
2601 for (tmp = cfg->try_block_holes; tmp; tmp = tmp->next) {
2602 guint32 start_bb_offset;
2603 MonoTryBlockHoleJitInfo *hole;
2604 TryBlockHole *hole_data = (TryBlockHole *)tmp->data;
2605 MonoExceptionClause *ec = hole_data->clause;
2606 int hole_end = hole_data->basic_block->native_offset + hole_data->basic_block->native_length;
2607 MonoBasicBlock *clause_last_bb = cfg->cil_offset_to_bb [ec->try_offset + ec->try_len];
2608 g_assert (clause_last_bb);
2609
2610 /* Holes at the end of a try region can be represented by simply reducing the size of the block itself.*/
2611 if (clause_last_bb->native_offset == hole_end)
2612 continue;
2613
2614 start_bb_offset = hole_data->start_offset - hole_data->basic_block->native_offset;
2615 hole = &table->holes [i++];
2616 hole->clause = hole_data->clause - &header->clauses [0];
2617 hole->offset = (guint32)hole_data->start_offset;
2618 hole->length = (guint16)(hole_data->basic_block->native_length - start_bb_offset);
2619
2620 if (G_UNLIKELY (cfg->verbose_level >= 4))
2621 printf ("\tTry block hole at eh clause %d offset %x length %x\n", hole->clause, hole->offset, hole->length);
2622 }
2623 g_assert (i == num_holes);
2624 }
2625
2626 if (jinfo->has_arch_eh_info) {
2627 MonoArchEHJitInfo *info;
2628
2629 info = mono_jit_info_get_arch_eh_info (jinfo);
2630
2631 info->stack_size = stack_size;
2632 }
2633
2634 if (cfg->thunk_area) {
2635 MonoThunkJitInfo *info;
2636
2637 info = mono_jit_info_get_thunk_info (jinfo);
2638 info->thunks_offset = cfg->thunks_offset;
2639 info->thunks_size = cfg->thunk_area;
2640 }
2641
2642 if (COMPILE_LLVM (cfg)) {
2643 if (num_clauses)
2644 memcpy (&jinfo->clauses [0], &cfg->llvm_ex_info [0], num_clauses * sizeof (MonoJitExceptionInfo));
2645 } else if (header->num_clauses) {
2646 int i;
2647
2648 for (i = 0; i < header->num_clauses; i++) {
2649 MonoExceptionClause *ec = &header->clauses [i];
2650 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2651 MonoBasicBlock *tblock;
2652 MonoInst *exvar, *spvar;
2653
2654 ei->flags = ec->flags;
2655
2656 if (G_UNLIKELY (cfg->verbose_level >= 4))
2657 printf ("IL clause: try 0x%x-0x%x handler 0x%x-0x%x filter 0x%x\n", ec->try_offset, ec->try_offset + ec->try_len, ec->handler_offset, ec->handler_offset + ec->handler_len, ec->flags == MONO_EXCEPTION_CLAUSE_FILTER ? ec->data.filter_offset : 0);
2658
2659 /*
2660 * The spvars are needed by mono_arch_install_handler_block_guard ().
2661 */
2662 if (ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY) {
2663 int region;
2664
2665 region = ((i + 1) << 8) | MONO_REGION_FINALLY | ec->flags;
2666 spvar = mono_find_spvar_for_region (cfg, region);
2667 g_assert (spvar);
2668 ei->exvar_offset = spvar->inst_offset;
2669 } else {
2670 exvar = mono_find_exvar_for_offset (cfg, ec->handler_offset);
2671 ei->exvar_offset = exvar ? exvar->inst_offset : 0;
2672 }
2673
2674 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
2675 tblock = cfg->cil_offset_to_bb [ec->data.filter_offset];
2676 g_assert (tblock);
2677 ei->data.filter = cfg->native_code + tblock->native_offset;
2678 } else {
2679 ei->data.catch_class = ec->data.catch_class;
2680 }
2681
2682 tblock = cfg->cil_offset_to_bb [ec->try_offset];
2683 g_assert (tblock);
2684 g_assert (tblock->native_offset);
2685 ei->try_start = cfg->native_code + tblock->native_offset;
2686 if (tblock->extend_try_block) {
2687 /*
2688 * Extend the try block backwards to include parts of the previous call
2689 * instruction.
2690 */
2691 ei->try_start = (guint8*)ei->try_start - cfg->backend->monitor_enter_adjustment;
2692 }
2693 if (ec->try_offset + ec->try_len < header->code_size)
2694 tblock = cfg->cil_offset_to_bb [ec->try_offset + ec->try_len];
2695 else
2696 tblock = cfg->bb_exit;
2697 if (G_UNLIKELY (cfg->verbose_level >= 4))
2698 printf ("looking for end of try [%d, %d] -> %p (code size %d)\n", ec->try_offset, ec->try_len, tblock, header->code_size);
2699 g_assert (tblock);
2700 if (!tblock->native_offset) {
2701 int j, end;
2702 for (j = ec->try_offset + ec->try_len, end = ec->try_offset; j >= end; --j) {
2703 MonoBasicBlock *bb = cfg->cil_offset_to_bb [j];
2704 if (bb && bb->native_offset) {
2705 tblock = bb;
2706 break;
2707 }
2708 }
2709 }
2710 ei->try_end = cfg->native_code + tblock->native_offset;
2711 g_assert (tblock->native_offset);
2712 tblock = cfg->cil_offset_to_bb [ec->handler_offset];
2713 g_assert (tblock);
2714 ei->handler_start = cfg->native_code + tblock->native_offset;
2715
2716 for (tmp = cfg->try_block_holes; tmp; tmp = tmp->next) {
2717 TryBlockHole *hole = (TryBlockHole *)tmp->data;
2718 gpointer hole_end = cfg->native_code + (hole->basic_block->native_offset + hole->basic_block->native_length);
2719 if (hole->clause == ec && hole_end == ei->try_end) {
2720 if (G_UNLIKELY (cfg->verbose_level >= 4))
2721 printf ("\tShortening try block %d from %x to %x\n", i, (int)((guint8*)ei->try_end - cfg->native_code), hole->start_offset);
2722
2723 ei->try_end = cfg->native_code + hole->start_offset;
2724 break;
2725 }
2726 }
2727
2728 if (ec->flags == MONO_EXCEPTION_CLAUSE_FINALLY) {
2729 int end_offset;
2730 if (ec->handler_offset + ec->handler_len < header->code_size) {
2731 tblock = cfg->cil_offset_to_bb [ec->handler_offset + ec->handler_len];
2732 if (tblock->native_offset) {
2733 end_offset = tblock->native_offset;
2734 } else {
2735 int j, end;
2736
2737 for (j = ec->handler_offset + ec->handler_len, end = ec->handler_offset; j >= end; --j) {
2738 MonoBasicBlock *bb = cfg->cil_offset_to_bb [j];
2739 if (bb && bb->native_offset) {
2740 tblock = bb;
2741 break;
2742 }
2743 }
2744 end_offset = tblock->native_offset + tblock->native_length;
2745 }
2746 } else {
2747 end_offset = cfg->epilog_begin;
2748 }
2749 ei->data.handler_end = cfg->native_code + end_offset;
2750 }
2751 }
2752 }
2753
2754 if (G_UNLIKELY (cfg->verbose_level >= 4)) {
2755 int i;
2756 for (i = 0; i < jinfo->num_clauses; i++) {
2757 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2758 int start = (guint8*)ei->try_start - cfg->native_code;
2759 int end = (guint8*)ei->try_end - cfg->native_code;
2760 int handler = (guint8*)ei->handler_start - cfg->native_code;
2761 int handler_end = (guint8*)ei->data.handler_end - cfg->native_code;
2762
2763 printf ("JitInfo EH clause %d flags %x try %x-%x handler %x-%x\n", i, ei->flags, start, end, handler, handler_end);
2764 }
2765 }
2766
2767 if (cfg->encoded_unwind_ops) {
2768 /* Generated by LLVM */
2769 jinfo->unwind_info = mono_cache_unwind_info (cfg->encoded_unwind_ops, cfg->encoded_unwind_ops_len);
2770 g_free (cfg->encoded_unwind_ops);
2771 } else if (cfg->unwind_ops) {
2772 guint32 info_len;
2773 guint8 *unwind_info = mono_unwind_ops_encode (cfg->unwind_ops, &info_len);
2774 guint32 unwind_desc;
2775
2776 unwind_desc = mono_cache_unwind_info (unwind_info, info_len);
2777
2778 if (cfg->has_unwind_info_for_epilog) {
2779 MonoArchEHJitInfo *info;
2780
2781 info = mono_jit_info_get_arch_eh_info (jinfo);
2782 g_assert (info);
2783 info->epilog_size = cfg->code_len - cfg->epilog_begin;
2784 }
2785 jinfo->unwind_info = unwind_desc;
2786 g_free (unwind_info);
2787 } else {
2788 jinfo->unwind_info = cfg->used_int_regs;
2789 }
2790
2791 return jinfo;
2792 }
2793
2794 /* Return whenever METHOD is a gsharedvt method */
2795 static gboolean
2796 is_gsharedvt_method (MonoMethod *method)
2797 {
2798 MonoGenericContext *context;
2799 MonoGenericInst *inst;
2800 int i;
2801
2802 if (!method->is_inflated)
2803 return FALSE;
2804 context = mono_method_get_context (method);
2805 inst = context->class_inst;
2806 if (inst) {
2807 for (i = 0; i < inst->type_argc; ++i)
2808 if (mini_is_gsharedvt_gparam (inst->type_argv [i]))
2809 return TRUE;
2810 }
2811 inst = context->method_inst;
2812 if (inst) {
2813 for (i = 0; i < inst->type_argc; ++i)
2814 if (mini_is_gsharedvt_gparam (inst->type_argv [i]))
2815 return TRUE;
2816 }
2817 return FALSE;
2818 }
2819
2820 static gboolean
2821 is_open_method (MonoMethod *method)
2822 {
2823 MonoGenericContext *context;
2824
2825 if (!method->is_inflated)
2826 return FALSE;
2827 context = mono_method_get_context (method);
2828 if (context->class_inst && context->class_inst->is_open)
2829 return TRUE;
2830 if (context->method_inst && context->method_inst->is_open)
2831 return TRUE;
2832 return FALSE;
2833 }
2834
2835 static void
2836 mono_insert_nop_in_empty_bb (MonoCompile *cfg)
2837 {
2838 MonoBasicBlock *bb;
2839 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2840 if (bb->code)
2841 continue;
2842 MonoInst *nop;
2843 MONO_INST_NEW (cfg, nop, OP_NOP);
2844 MONO_ADD_INS (bb, nop);
2845 }
2846 }
2847 static void
2848 mono_create_gc_safepoint (MonoCompile *cfg, MonoBasicBlock *bblock)
2849 {
2850 MonoInst *poll_addr, *ins;
2851
2852 if (cfg->disable_gc_safe_points)
2853 return;
2854
2855 if (cfg->verbose_level > 1)
2856 printf ("ADDING SAFE POINT TO BB %d\n", bblock->block_num);
2857
2858 g_assert (mono_threads_is_coop_enabled ());
2859 NEW_AOTCONST (cfg, poll_addr, MONO_PATCH_INFO_GC_SAFE_POINT_FLAG, (gpointer)&mono_polling_required);
2860
2861 MONO_INST_NEW (cfg, ins, OP_GC_SAFE_POINT);
2862 ins->sreg1 = poll_addr->dreg;
2863
2864 if (bblock->flags & BB_EXCEPTION_HANDLER) {
2865 MonoInst *eh_op = bblock->code;
2866
2867 if (eh_op && eh_op->opcode != OP_START_HANDLER && eh_op->opcode != OP_GET_EX_OBJ) {
2868 eh_op = NULL;
2869 } else {
2870 MonoInst *next_eh_op = eh_op ? eh_op->next : NULL;
2871 // skip all EH relateds ops
2872 while (next_eh_op && (next_eh_op->opcode == OP_START_HANDLER || next_eh_op->opcode == OP_GET_EX_OBJ)) {
2873 eh_op = next_eh_op;
2874 next_eh_op = eh_op->next;
2875 }
2876 }
2877
2878 mono_bblock_insert_after_ins (bblock, eh_op, poll_addr);
2879 mono_bblock_insert_after_ins (bblock, poll_addr, ins);
2880 } else if (bblock == cfg->bb_entry) {
2881 mono_bblock_insert_after_ins (bblock, bblock->last_ins, poll_addr);
2882 mono_bblock_insert_after_ins (bblock, poll_addr, ins);
2883
2884 } else {
2885 mono_bblock_insert_before_ins (bblock, NULL, poll_addr);
2886 mono_bblock_insert_after_ins (bblock, poll_addr, ins);
2887 }
2888 }
2889
2890 /*
2891 This code inserts safepoints into managed code at important code paths.
2892 Those are:
2893
2894 -the first basic block
2895 -landing BB for exception handlers
2896 -loop body starts.
2897
2898 */
2899 static void
2900 mono_insert_safepoints (MonoCompile *cfg)
2901 {
2902 MonoBasicBlock *bb;
2903
2904 if (!mono_threads_is_coop_enabled ())
2905 return;
2906
2907 if (cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2908 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2909 g_assert (mono_threads_is_coop_enabled ());
2910 gpointer poll_func = &mono_threads_state_poll;
2911
2912 if (info && info->subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER && info->d.icall.func == poll_func) {
2913 if (cfg->verbose_level > 1)
2914 printf ("SKIPPING SAFEPOINTS for the polling function icall\n");
2915 return;
2916 }
2917 }
2918
2919 if (cfg->method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
2920 if (cfg->verbose_level > 1)
2921 printf ("SKIPPING SAFEPOINTS for native-to-managed wrappers.\n");
2922 return;
2923 }
2924
2925 if (cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2926 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2927
2928 if (info && info->subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER &&
2929 (info->d.icall.func == mono_thread_interruption_checkpoint ||
2930 info->d.icall.func == mono_threads_exit_gc_safe_region_unbalanced)) {
2931 /* These wrappers are called from the wrapper for the polling function, leading to potential stack overflow */
2932 if (cfg->verbose_level > 1)
2933 printf ("SKIPPING SAFEPOINTS for wrapper %s\n", cfg->method->name);
2934 return;
2935 }
2936 }
2937
2938 if (cfg->verbose_level > 1)
2939 printf ("INSERTING SAFEPOINTS\n");
2940 if (cfg->verbose_level > 2)
2941 mono_print_code (cfg, "BEFORE SAFEPOINTS");
2942
2943 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2944 if (bb->loop_body_start || bb == cfg->bb_entry || bb->flags & BB_EXCEPTION_HANDLER)
2945 mono_create_gc_safepoint (cfg, bb);
2946 }
2947
2948 if (cfg->verbose_level > 2)
2949 mono_print_code (cfg, "AFTER SAFEPOINTS");
2950
2951 }
2952
2953
2954 static void
2955 mono_insert_branches_between_bblocks (MonoCompile *cfg)
2956 {
2957 MonoBasicBlock *bb;
2958
2959 /* Add branches between non-consecutive bblocks */
2960 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2961 if (bb->last_ins && MONO_IS_COND_BRANCH_OP (bb->last_ins) &&
2962 bb->last_ins->inst_false_bb && bb->next_bb != bb->last_ins->inst_false_bb) {
2963 /* we are careful when inverting, since bugs like #59580
2964 * could show up when dealing with NaNs.
2965 */
2966 if (MONO_IS_COND_BRANCH_NOFP(bb->last_ins) && bb->next_bb == bb->last_ins->inst_true_bb) {
2967 MonoBasicBlock *tmp = bb->last_ins->inst_true_bb;
2968 bb->last_ins->inst_true_bb = bb->last_ins->inst_false_bb;
2969 bb->last_ins->inst_false_bb = tmp;
2970
2971 bb->last_ins->opcode = mono_reverse_branch_op (bb->last_ins->opcode);
2972 } else {
2973 MonoInst *inst = (MonoInst *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst));
2974 inst->opcode = OP_BR;
2975 inst->inst_target_bb = bb->last_ins->inst_false_bb;
2976 mono_bblock_add_inst (bb, inst);
2977 }
2978 }
2979 }
2980
2981 if (cfg->verbose_level >= 4) {
2982 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2983 MonoInst *tree = bb->code;
2984 g_print ("DUMP BLOCK %d:\n", bb->block_num);
2985 if (!tree)
2986 continue;
2987 for (; tree; tree = tree->next) {
2988 mono_print_ins_index (-1, tree);
2989 }
2990 }
2991 }
2992
2993 /* FIXME: */
2994 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2995 bb->max_vreg = cfg->next_vreg;
2996 }
2997 }
2998
2999 static void
3000 init_backend (MonoBackend *backend)
3001 {
3002 #ifdef MONO_ARCH_NEED_GOT_VAR
3003 backend->need_got_var = 1;
3004 #endif
3005 #ifdef MONO_ARCH_HAVE_CARD_TABLE_WBARRIER
3006 backend->have_card_table_wb = 1;
3007 #endif
3008 #ifdef MONO_ARCH_HAVE_OP_GENERIC_CLASS_INIT
3009 backend->have_op_generic_class_init = 1;
3010 #endif
3011 #ifdef MONO_ARCH_EMULATE_MUL_DIV
3012 backend->emulate_mul_div = 1;
3013 #endif
3014 #ifdef MONO_ARCH_EMULATE_DIV
3015 backend->emulate_div = 1;
3016 #endif
3017 #if !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
3018 backend->emulate_long_shift_opts = 1;
3019 #endif
3020 #ifdef MONO_ARCH_HAVE_OBJC_GET_SELECTOR
3021 backend->have_objc_get_selector = 1;
3022 #endif
3023 #ifdef MONO_ARCH_HAVE_GENERALIZED_IMT_TRAMPOLINE
3024 backend->have_generalized_imt_trampoline = 1;
3025 #endif
3026 #ifdef MONO_ARCH_GSHARED_SUPPORTED
3027 backend->gshared_supported = 1;
3028 #endif
3029 if (MONO_ARCH_USE_FPSTACK)
3030 backend->use_fpstack = 1;
3031 #ifdef MONO_ARCH_HAVE_LIVERANGE_OPS
3032 backend->have_liverange_ops = 1;
3033 #endif
3034 #ifdef MONO_ARCH_HAVE_OP_TAIL_CALL
3035 backend->have_op_tail_call = 1;
3036 #endif
3037 #ifndef MONO_ARCH_MONITOR_ENTER_ADJUSTMENT
3038 backend->monitor_enter_adjustment = 1;
3039 #else
3040 backend->monitor_enter_adjustment = MONO_ARCH_MONITOR_ENTER_ADJUSTMENT;
3041 #endif
3042 #if defined(__mono_ilp32__)
3043 backend->ilp32 = 1;
3044 #endif
3045 #ifdef MONO_ARCH_HAVE_DUMMY_INIT
3046 backend->have_dummy_init = 1;
3047 #endif
3048 #ifdef MONO_ARCH_NEED_DIV_CHECK
3049 backend->need_div_check = 1;
3050 #endif
3051 #ifdef NO_UNALIGNED_ACCESS
3052 backend->no_unaligned_access = 1;
3053 #endif
3054 #ifdef MONO_ARCH_DYN_CALL_PARAM_AREA
3055 backend->dyn_call_param_area = MONO_ARCH_DYN_CALL_PARAM_AREA;
3056 #endif
3057 #ifdef MONO_ARCH_NO_DIV_WITH_MUL
3058 backend->disable_div_with_mul = 1;
3059 #endif
3060 }
3061
3062 /*
3063 * mini_method_compile:
3064 * @method: the method to compile
3065 * @opts: the optimization flags to use
3066 * @domain: the domain where the method will be compiled in
3067 * @flags: compilation flags
3068 * @parts: debug flag
3069 *
3070 * Returns: a MonoCompile* pointer. Caller must check the exception_type
3071 * field in the returned struct to see if compilation succeded.
3072 */
3073 MonoCompile*
3074 mini_method_compile (MonoMethod *method, guint32 opts, MonoDomain *domain, JitFlags flags, int parts, int aot_method_index)
3075 {
3076 MonoMethodHeader *header;
3077 MonoMethodSignature *sig;
3078 MonoError err;
3079 MonoCompile *cfg;
3080 int i, code_size_ratio;
3081 gboolean try_generic_shared, try_llvm = FALSE;
3082 MonoMethod *method_to_compile, *method_to_register;
3083 gboolean method_is_gshared = FALSE;
3084 gboolean run_cctors = (flags & JIT_FLAG_RUN_CCTORS) ? 1 : 0;
3085 gboolean compile_aot = (flags & JIT_FLAG_AOT) ? 1 : 0;
3086 gboolean full_aot = (flags & JIT_FLAG_FULL_AOT) ? 1 : 0;
3087 gboolean disable_direct_icalls = (flags & JIT_FLAG_NO_DIRECT_ICALLS) ? 1 : 0;
3088 gboolean gsharedvt_method = FALSE;
3089 #ifdef ENABLE_LLVM
3090 gboolean llvm = (flags & JIT_FLAG_LLVM) ? 1 : 0;
3091 #endif
3092 static gboolean verbose_method_inited;
3093 static char *verbose_method_name;
3094
3095 InterlockedIncrement (&mono_jit_stats.methods_compiled);
3096 MONO_PROFILER_RAISE (jit_begin, (method));
3097 if (MONO_METHOD_COMPILE_BEGIN_ENABLED ())
3098 MONO_PROBE_METHOD_COMPILE_BEGIN (method);
3099
3100 gsharedvt_method = is_gsharedvt_method (method);
3101
3102 /*
3103 * In AOT mode, method can be the following:
3104 * - a gsharedvt method.
3105 * - a method inflated with type parameters. This is for ref/partial sharing.
3106 * - a method inflated with concrete types.
3107 */
3108 if (compile_aot) {
3109 if (is_open_method (method)) {
3110 try_generic_shared = TRUE;
3111 method_is_gshared = TRUE;
3112 } else {
3113 try_generic_shared = FALSE;
3114 }
3115 g_assert (opts & MONO_OPT_GSHARED);
3116 } else {
3117 try_generic_shared = mono_class_generic_sharing_enabled (method->klass) &&
3118 (opts & MONO_OPT_GSHARED) && mono_method_is_generic_sharable (method, FALSE);
3119 if (mini_is_gsharedvt_sharable_method (method)) {
3120 /*
3121 if (!mono_debug_count ())
3122 try_generic_shared = FALSE;
3123 */
3124 }
3125 }
3126
3127 /*
3128 if (try_generic_shared && !mono_debug_count ())
3129 try_generic_shared = FALSE;
3130 */
3131
3132 if (opts & MONO_OPT_GSHARED) {
3133 if (try_generic_shared)
3134 mono_stats.generics_sharable_methods++;
3135 else if (mono_method_is_generic_impl (method))
3136 mono_stats.generics_unsharable_methods++;
3137 }
3138
3139 #ifdef ENABLE_LLVM
3140 try_llvm = mono_use_llvm || llvm;
3141 #endif
3142
3143 restart_compile:
3144 if (method_is_gshared) {
3145 method_to_compile = method;
3146 } else {
3147 if (try_generic_shared) {
3148 method_to_compile = mini_get_shared_method (method);
3149 g_assert (method_to_compile);
3150 } else {
3151 method_to_compile = method;
3152 }
3153 }
3154
3155 cfg = g_new0 (MonoCompile, 1);
3156 cfg->method = method_to_compile;
3157 cfg->mempool = mono_mempool_new ();
3158 cfg->opt = opts;
3159 cfg->run_cctors = run_cctors;
3160 cfg->domain = domain;
3161 cfg->verbose_level = mini_verbose;
3162 cfg->compile_aot = compile_aot;
3163 cfg->full_aot = full_aot;
3164 cfg->disable_omit_fp = debug_options.disable_omit_fp;
3165 cfg->skip_visibility = method->skip_visibility;
3166 cfg->orig_method = method;
3167 cfg->gen_seq_points = !debug_options.no_seq_points_compact_data || debug_options.gen_sdb_seq_points;
3168 cfg->gen_sdb_seq_points = debug_options.gen_sdb_seq_points;
3169 cfg->llvm_only = (flags & JIT_FLAG_LLVM_ONLY) != 0;
3170 cfg->backend = current_backend;
3171
3172 #ifdef PLATFORM_ANDROID
3173 if (cfg->method->wrapper_type != MONO_WRAPPER_NONE) {
3174 /* FIXME: Why is this needed */
3175 cfg->gen_seq_points = FALSE;
3176 cfg->gen_sdb_seq_points = FALSE;
3177 }
3178 #endif
3179 if (cfg->method->wrapper_type == MONO_WRAPPER_ALLOC) {
3180 /* We can't have seq points inside gc critical regions */
3181 cfg->gen_seq_points = FALSE;
3182 cfg->gen_sdb_seq_points = FALSE;
3183 }
3184 /* coop requires loop detection to happen */
3185 if (mono_threads_is_coop_enabled ())
3186 cfg->opt |= MONO_OPT_LOOP;
3187 cfg->explicit_null_checks = debug_options.explicit_null_checks || (flags & JIT_FLAG_EXPLICIT_NULL_CHECKS);
3188 cfg->soft_breakpoints = debug_options.soft_breakpoints;
3189 cfg->check_pinvoke_callconv = debug_options.check_pinvoke_callconv;
3190 cfg->disable_direct_icalls = disable_direct_icalls;
3191 cfg->direct_pinvoke = (flags & JIT_FLAG_DIRECT_PINVOKE) != 0;
3192 if (try_generic_shared)
3193 cfg->gshared = TRUE;
3194 cfg->compile_llvm = try_llvm;
3195 cfg->token_info_hash = g_hash_table_new (NULL, NULL);
3196 if (cfg->compile_aot)
3197 cfg->method_index = aot_method_index;
3198
3199 /*
3200 if (!mono_debug_count ())
3201 cfg->opt &= ~MONO_OPT_FLOAT32;
3202 */
3203 if (cfg->llvm_only)
3204 cfg->opt &= ~MONO_OPT_SIMD;
3205 cfg->r4fp = (cfg->opt & MONO_OPT_FLOAT32) ? 1 : 0;
3206 cfg->r4_stack_type = cfg->r4fp ? STACK_R4 : STACK_R8;
3207
3208 if (cfg->gen_seq_points)
3209 cfg->seq_points = g_ptr_array_new ();
3210 error_init (&cfg->error);
3211
3212 if (cfg->compile_aot && !try_generic_shared && (method->is_generic || mono_class_is_gtd (method->klass) || method_is_gshared)) {
3213 cfg->exception_type = MONO_EXCEPTION_GENERIC_SHARING_FAILED;
3214 return cfg;
3215 }
3216
3217 if (cfg->gshared && (gsharedvt_method || mini_is_gsharedvt_sharable_method (method))) {
3218 MonoMethodInflated *inflated;
3219 MonoGenericContext *context;
3220
3221 if (gsharedvt_method) {
3222 g_assert (method->is_inflated);
3223 inflated = (MonoMethodInflated*)method;
3224 context = &inflated->context;
3225
3226 /* We are compiling a gsharedvt method directly */
3227 g_assert (compile_aot);
3228 } else {
3229 g_assert (method_to_compile->is_inflated);
3230 inflated = (MonoMethodInflated*)method_to_compile;
3231 context = &inflated->context;
3232 }
3233
3234 mini_init_gsctx (NULL, cfg->mempool, context, &cfg->gsctx);
3235 cfg->gsctx_context = context;
3236
3237 cfg->gsharedvt = TRUE;
3238 if (!cfg->llvm_only) {
3239 cfg->disable_llvm = TRUE;
3240 cfg->exception_message = g_strdup ("gsharedvt");
3241 }
3242 }
3243
3244 if (cfg->gshared) {
3245 method_to_register = method_to_compile;
3246 } else {
3247 g_assert (method == method_to_compile);
3248 method_to_register = method;
3249 }
3250 cfg->method_to_register = method_to_register;
3251
3252 error_init (&err);
3253 sig = mono_method_signature_checked (cfg->method, &err);
3254 if (!sig) {
3255 cfg->exception_type = MONO_EXCEPTION_TYPE_LOAD;
3256 cfg->exception_message = g_strdup (mono_error_get_message (&err));
3257 mono_error_cleanup (&err);
3258 if (MONO_METHOD_COMPILE_END_ENABLED ())
3259 MONO_PROBE_METHOD_COMPILE_END (method, FALSE);
3260 return cfg;
3261 }
3262
3263 header = cfg->header = mono_method_get_header_checked (cfg->method, &cfg->error);
3264 if (!header) {
3265 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
3266 if (MONO_METHOD_COMPILE_END_ENABLED ())
3267 MONO_PROBE_METHOD_COMPILE_END (method, FALSE);
3268 return cfg;
3269 }
3270
3271 #ifdef ENABLE_LLVM
3272 {
3273 static gboolean inited;
3274
3275 if (!inited)
3276 inited = TRUE;
3277
3278 /*
3279 * Check for methods which cannot be compiled by LLVM early, to avoid
3280 * the extra compilation pass.
3281 */
3282 if (COMPILE_LLVM (cfg)) {
3283 mono_llvm_check_method_supported (cfg);
3284 if (cfg->disable_llvm) {
3285 if (cfg->verbose_level >= (cfg->llvm_only ? 0 : 1)) {
3286 //nm = mono_method_full_name (cfg->method, TRUE);
3287 printf ("LLVM failed for '%s': %s\n", method->name, cfg->exception_message);
3288 //g_free (nm);
3289 }
3290 if (cfg->llvm_only) {
3291 g_free (cfg->exception_message);
3292 cfg->disable_aot = TRUE;
3293 return cfg;
3294 }
3295 mono_destroy_compile (cfg);
3296 try_llvm = FALSE;
3297 goto restart_compile;
3298 }
3299 }
3300 }
3301 #endif
3302
3303 /* The debugger has no liveness information, so avoid sharing registers/stack slots */
3304 if (debug_options.mdb_optimizations) {
3305 cfg->disable_reuse_registers = TRUE;
3306 cfg->disable_reuse_stack_slots = TRUE;
3307 /*
3308 * This decreases the change the debugger will read registers/stack slots which are
3309 * not yet initialized.
3310 */
3311 cfg->disable_initlocals_opt = TRUE;
3312
3313 cfg->extend_live_ranges = TRUE;
3314
3315 /* The debugger needs all locals to be on the stack or in a global register */
3316 cfg->disable_vreg_to_lvreg = TRUE;
3317
3318 /* Don't remove unused variables when running inside the debugger since the user
3319 * may still want to view them. */
3320 cfg->disable_deadce_vars = TRUE;
3321
3322 cfg->opt &= ~MONO_OPT_DEADCE;
3323 cfg->opt &= ~MONO_OPT_INLINE;
3324 cfg->opt &= ~MONO_OPT_COPYPROP;
3325 cfg->opt &= ~MONO_OPT_CONSPROP;
3326
3327 /* This is needed for the soft debugger, which doesn't like code after the epilog */
3328 cfg->disable_out_of_line_bblocks = TRUE;
3329 }
3330
3331 if (mono_using_xdebug) {
3332 /*
3333 * Make each variable use its own register/stack slot and extend
3334 * their liveness to cover the whole method, making them displayable
3335 * in gdb even after they are dead.
3336 */
3337 cfg->disable_reuse_registers = TRUE;
3338 cfg->disable_reuse_stack_slots = TRUE;
3339 cfg->extend_live_ranges = TRUE;
3340 cfg->compute_precise_live_ranges = TRUE;
3341 }
3342
3343 mini_gc_init_cfg (cfg);
3344
3345 if (method->wrapper_type == MONO_WRAPPER_UNKNOWN) {
3346 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
3347
3348 /* These wrappers are using linkonce linkage, so they can't access GOT slots */
3349 if ((info && (info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN_SIG || info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT_SIG))) {
3350 cfg->disable_gc_safe_points = TRUE;
3351 /* This is safe, these wrappers only store to the stack */
3352 cfg->gen_write_barriers = FALSE;
3353 }
3354 }
3355
3356 if (COMPILE_LLVM (cfg)) {
3357 cfg->opt |= MONO_OPT_ABCREM;
3358 }
3359
3360 if (!verbose_method_inited) {
3361 verbose_method_name = g_getenv ("MONO_VERBOSE_METHOD");
3362 verbose_method_inited = TRUE;
3363 }
3364 if (verbose_method_name) {
3365 const char *name = verbose_method_name;
3366
3367 if ((strchr (name, '.') > name) || strchr (name, ':')) {
3368 MonoMethodDesc *desc;
3369
3370 desc = mono_method_desc_new (name, TRUE);
3371 if (mono_method_desc_full_match (desc, cfg->method)) {
3372 cfg->verbose_level = 4;
3373 }
3374 mono_method_desc_free (desc);
3375 } else {
3376 if (strcmp (cfg->method->name, name) == 0)
3377 cfg->verbose_level = 4;
3378 }
3379 }
3380
3381 cfg->intvars = (guint16 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint16) * STACK_MAX * header->max_stack);
3382
3383 if (cfg->verbose_level > 0) {
3384 char *method_name;
3385
3386 method_name = mono_method_get_full_name (method);
3387 g_print ("converting %s%s%smethod %s\n", COMPILE_LLVM (cfg) ? "llvm " : "", cfg->gsharedvt ? "gsharedvt " : "", (cfg->gshared && !cfg->gsharedvt) ? "gshared " : "", method_name);
3388 /*
3389 if (COMPILE_LLVM (cfg))
3390 g_print ("converting llvm method %s\n", method_name = mono_method_full_name (method, TRUE));
3391 else if (cfg->gsharedvt)
3392 g_print ("converting gsharedvt method %s\n", method_name = mono_method_full_name (method_to_compile, TRUE));
3393 else if (cfg->gshared)
3394 g_print ("converting shared method %s\n", method_name = mono_method_full_name (method_to_compile, TRUE));
3395 else
3396 g_print ("converting method %s\n", method_name = mono_method_full_name (method, TRUE));
3397 */
3398 g_free (method_name);
3399 }
3400
3401 if (cfg->opt & MONO_OPT_ABCREM)
3402 cfg->opt |= MONO_OPT_SSA;
3403
3404 cfg->rs = mono_regstate_new ();
3405 cfg->next_vreg = cfg->rs->next_vreg;
3406
3407 /* FIXME: Fix SSA to handle branches inside bblocks */
3408 if (cfg->opt & MONO_OPT_SSA)
3409 cfg->enable_extended_bblocks = FALSE;
3410
3411 /*
3412 * FIXME: This confuses liveness analysis because variables which are assigned after
3413 * a branch inside a bblock become part of the kill set, even though the assignment
3414 * might not get executed. This causes the optimize_initlocals pass to delete some
3415 * assignments which are needed.
3416 * Also, the mono_if_conversion pass needs to be modified to recognize the code
3417 * created by this.
3418 */
3419 //cfg->enable_extended_bblocks = TRUE;
3420
3421 /*We must verify the method before doing any IR generation as mono_compile_create_vars can assert.*/
3422 if (mono_compile_is_broken (cfg, cfg->method, TRUE)) {
3423 if (mini_get_debug_options ()->break_on_unverified)
3424 G_BREAKPOINT ();
3425 return cfg;
3426 }
3427
3428 /*
3429 * create MonoInst* which represents arguments and local variables
3430 */
3431 mono_compile_create_vars (cfg);
3432
3433 mono_cfg_dump_create_context (cfg);
3434 mono_cfg_dump_begin_group (cfg);
3435
3436 MONO_TIME_TRACK (mono_jit_stats.jit_method_to_ir, i = mono_method_to_ir (cfg, method_to_compile, NULL, NULL, NULL, NULL, 0, FALSE));
3437 mono_cfg_dump_ir (cfg, "method-to-ir");
3438
3439 if (cfg->gdump_ctx != NULL) {
3440 /* workaround for graph visualization, as it doesn't handle empty basic blocks properly */
3441 mono_insert_nop_in_empty_bb (cfg);
3442 mono_cfg_dump_ir (cfg, "mono_insert_nop_in_empty_bb");
3443 }
3444
3445 if (i < 0) {
3446 if (try_generic_shared && cfg->exception_type == MONO_EXCEPTION_GENERIC_SHARING_FAILED) {
3447 if (compile_aot) {
3448 if (MONO_METHOD_COMPILE_END_ENABLED ())
3449 MONO_PROBE_METHOD_COMPILE_END (method, FALSE);
3450 return cfg;
3451 }
3452 mono_destroy_compile (cfg);
3453 try_generic_shared = FALSE;
3454 goto restart_compile;
3455 }
3456 g_assert (cfg->exception_type != MONO_EXCEPTION_GENERIC_SHARING_FAILED);
3457
3458 if (MONO_METHOD_COMPILE_END_ENABLED ())
3459 MONO_PROBE_METHOD_COMPILE_END (method, FALSE);
3460 /* cfg contains the details of the failure, so let the caller cleanup */
3461 return cfg;
3462 }
3463
3464 cfg->stat_basic_blocks += cfg->num_bblocks;
3465
3466 if (COMPILE_LLVM (cfg)) {
3467 MonoInst *ins;
3468
3469 /* The IR has to be in SSA form for LLVM */
3470 cfg->opt |= MONO_OPT_SSA;
3471
3472 // FIXME:
3473 if (cfg->ret) {
3474 // Allow SSA on the result value
3475 cfg->ret->flags &= ~MONO_INST_VOLATILE;
3476
3477 // Add an explicit return instruction referencing the return value
3478 MONO_INST_NEW (cfg, ins, OP_SETRET);
3479 ins->sreg1 = cfg->ret->dreg;
3480
3481 MONO_ADD_INS (cfg->bb_exit, ins);
3482 }
3483
3484 cfg->opt &= ~MONO_OPT_LINEARS;
3485
3486 /* FIXME: */
3487 cfg->opt &= ~MONO_OPT_BRANCH;
3488 }
3489
3490 /* todo: remove code when we have verified that the liveness for try/catch blocks
3491 * works perfectly
3492 */
3493 /*
3494 * Currently, this can't be commented out since exception blocks are not
3495 * processed during liveness analysis.
3496 * It is also needed, because otherwise the local optimization passes would
3497 * delete assignments in cases like this:
3498 * r1 <- 1
3499 * <something which throws>
3500 * r1 <- 2
3501 * This also allows SSA to be run on methods containing exception clauses, since
3502 * SSA will ignore variables marked VOLATILE.
3503 */
3504 MONO_TIME_TRACK (mono_jit_stats.jit_liveness_handle_exception_clauses, mono_liveness_handle_exception_clauses (cfg));
3505 mono_cfg_dump_ir (cfg, "liveness_handle_exception_clauses");
3506
3507 MONO_TIME_TRACK (mono_jit_stats.jit_handle_out_of_line_bblock, mono_handle_out_of_line_bblock (cfg));
3508 mono_cfg_dump_ir (cfg, "handle_out_of_line_bblock");
3509
3510 /*g_print ("numblocks = %d\n", cfg->num_bblocks);*/
3511
3512 if (!COMPILE_LLVM (cfg)) {
3513 MONO_TIME_TRACK (mono_jit_stats.jit_decompose_long_opts, mono_decompose_long_opts (cfg));
3514 mono_cfg_dump_ir (cfg, "decompose_long_opts");
3515 }
3516
3517 /* Should be done before branch opts */
3518 if (cfg->opt & (MONO_OPT_CONSPROP | MONO_OPT_COPYPROP)) {
3519 MONO_TIME_TRACK (mono_jit_stats.jit_local_cprop, mono_local_cprop (cfg));
3520 mono_cfg_dump_ir (cfg, "local_cprop");
3521 }
3522
3523 if (cfg->flags & MONO_CFG_HAS_TYPE_CHECK) {
3524 MONO_TIME_TRACK (mono_jit_stats.jit_decompose_typechecks, mono_decompose_typechecks (cfg));
3525 if (cfg->gdump_ctx != NULL) {
3526 /* workaround for graph visualization, as it doesn't handle empty basic blocks properly */
3527 mono_insert_nop_in_empty_bb (cfg);
3528 }
3529 mono_cfg_dump_ir (cfg, "decompose_typechecks");
3530 }
3531
3532 /*
3533 * Should be done after cprop which can do strength reduction on
3534 * some of these ops, after propagating immediates.
3535 */
3536 if (cfg->has_emulated_ops) {
3537 MONO_TIME_TRACK (mono_jit_stats.jit_local_emulate_ops, mono_local_emulate_ops (cfg));
3538 mono_cfg_dump_ir (cfg, "local_emulate_ops");
3539 }
3540
3541 if (cfg->opt & MONO_OPT_BRANCH) {
3542 MONO_TIME_TRACK (mono_jit_stats.jit_optimize_branches, mono_optimize_branches (cfg));
3543 mono_cfg_dump_ir (cfg, "optimize_branches");
3544 }
3545
3546 /* This must be done _before_ global reg alloc and _after_ decompose */
3547 MONO_TIME_TRACK (mono_jit_stats.jit_handle_global_vregs, mono_handle_global_vregs (cfg));
3548 mono_cfg_dump_ir (cfg, "handle_global_vregs");
3549 if (cfg->opt & MONO_OPT_DEADCE) {
3550 MONO_TIME_TRACK (mono_jit_stats.jit_local_deadce, mono_local_deadce (cfg));
3551 mono_cfg_dump_ir (cfg, "local_deadce");
3552 }
3553 if (cfg->opt & MONO_OPT_ALIAS_ANALYSIS) {
3554 MONO_TIME_TRACK (mono_jit_stats.jit_local_alias_analysis, mono_local_alias_analysis (cfg));
3555 mono_cfg_dump_ir (cfg, "local_alias_analysis");
3556 }
3557 /* Disable this for LLVM to make the IR easier to handle */
3558 if (!COMPILE_LLVM (cfg)) {
3559 MONO_TIME_TRACK (mono_jit_stats.jit_if_conversion, mono_if_conversion (cfg));
3560 mono_cfg_dump_ir (cfg, "if_conversion");
3561 }
3562
3563 mono_threads_safepoint ();
3564
3565 MONO_TIME_TRACK (mono_jit_stats.jit_bb_ordering, mono_bb_ordering (cfg));
3566 mono_cfg_dump_ir (cfg, "bb_ordering");
3567
3568 if (((cfg->num_varinfo > 2000) || (cfg->num_bblocks > 1000)) && !cfg->compile_aot) {
3569 /*
3570 * we disable some optimizations if there are too many variables
3571 * because JIT time may become too expensive. The actual number needs
3572 * to be tweaked and eventually the non-linear algorithms should be fixed.
3573 */
3574 cfg->opt &= ~ (MONO_OPT_LINEARS | MONO_OPT_COPYPROP | MONO_OPT_CONSPROP);
3575 cfg->disable_ssa = TRUE;
3576 }
3577
3578 if (cfg->num_varinfo > 10000 && !cfg->llvm_only)
3579 /* Disable llvm for overly complex methods */
3580 cfg->disable_ssa = TRUE;
3581
3582 if (cfg->opt & MONO_OPT_LOOP) {
3583 MONO_TIME_TRACK (mono_jit_stats.jit_compile_dominator_info, mono_compile_dominator_info (cfg, MONO_COMP_DOM | MONO_COMP_IDOM));
3584 MONO_TIME_TRACK (mono_jit_stats.jit_compute_natural_loops, mono_compute_natural_loops (cfg));
3585 }
3586
3587 MONO_TIME_TRACK (mono_jit_stats.jit_insert_safepoints, mono_insert_safepoints (cfg));
3588 mono_cfg_dump_ir (cfg, "insert_safepoints");
3589
3590 /* after method_to_ir */
3591 if (parts == 1) {
3592 if (MONO_METHOD_COMPILE_END_ENABLED ())
3593 MONO_PROBE_METHOD_COMPILE_END (method, TRUE);
3594 return cfg;
3595 }
3596
3597 /*
3598 if (header->num_clauses)
3599 cfg->disable_ssa = TRUE;
3600 */
3601
3602 //#define DEBUGSSA "logic_run"
3603 //#define DEBUGSSA_CLASS "Tests"
3604 #ifdef DEBUGSSA
3605
3606 if (!cfg->disable_ssa) {
3607 mono_local_cprop (cfg);
3608
3609 #ifndef DISABLE_SSA
3610 mono_ssa_compute (cfg);
3611 #endif
3612 }
3613 #else
3614 if (cfg->opt & MONO_OPT_SSA) {
3615 if (!(cfg->comp_done & MONO_COMP_SSA) && !cfg->disable_ssa) {
3616 #ifndef DISABLE_SSA
3617 MONO_TIME_TRACK (mono_jit_stats.jit_ssa_compute, mono_ssa_compute (cfg));
3618 mono_cfg_dump_ir (cfg, "ssa_compute");
3619 #endif
3620
3621 if (cfg->verbose_level >= 2) {
3622 print_dfn (cfg);
3623 }
3624 }
3625 }
3626 #endif
3627
3628 /* after SSA translation */
3629 if (parts == 2) {
3630 if (MONO_METHOD_COMPILE_END_ENABLED ())
3631 MONO_PROBE_METHOD_COMPILE_END (method, TRUE);
3632 return cfg;
3633 }
3634
3635 if ((cfg->opt & MONO_OPT_CONSPROP) || (cfg->opt & MONO_OPT_COPYPROP)) {
3636 if (cfg->comp_done & MONO_COMP_SSA && !COMPILE_LLVM (cfg)) {
3637 #ifndef DISABLE_SSA
3638 MONO_TIME_TRACK (mono_jit_stats.jit_ssa_cprop, mono_ssa_cprop (cfg));
3639 mono_cfg_dump_ir (cfg, "ssa_cprop");
3640 #endif
3641 }
3642 }
3643
3644 #ifndef DISABLE_SSA
3645 if (cfg->comp_done & MONO_COMP_SSA && !COMPILE_LLVM (cfg)) {
3646 //mono_ssa_strength_reduction (cfg);
3647
3648 if (cfg->opt & MONO_OPT_DEADCE) {
3649 MONO_TIME_TRACK (mono_jit_stats.jit_ssa_deadce, mono_ssa_deadce (cfg));
3650 mono_cfg_dump_ir (cfg, "ssa_deadce");
3651 }
3652
3653 if ((cfg->flags & (MONO_CFG_HAS_LDELEMA|MONO_CFG_HAS_CHECK_THIS)) && (cfg->opt & MONO_OPT_ABCREM)) {
3654 MONO_TIME_TRACK (mono_jit_stats.jit_perform_abc_removal, mono_perform_abc_removal (cfg));
3655 mono_cfg_dump_ir (cfg, "perform_abc_removal");
3656 }
3657
3658 MONO_TIME_TRACK (mono_jit_stats.jit_ssa_remove, mono_ssa_remove (cfg));
3659 mono_cfg_dump_ir (cfg, "ssa_remove");
3660 MONO_TIME_TRACK (mono_jit_stats.jit_local_cprop2, mono_local_cprop (cfg));
3661 mono_cfg_dump_ir (cfg, "local_cprop2");
3662 MONO_TIME_TRACK (mono_jit_stats.jit_handle_global_vregs2, mono_handle_global_vregs (cfg));
3663 mono_cfg_dump_ir (cfg, "handle_global_vregs2");
3664 if (cfg->opt & MONO_OPT_DEADCE) {
3665 MONO_TIME_TRACK (mono_jit_stats.jit_local_deadce2, mono_local_deadce (cfg));
3666 mono_cfg_dump_ir (cfg, "local_deadce2");
3667 }
3668
3669 if (cfg->opt & MONO_OPT_BRANCH) {
3670 MONO_TIME_TRACK (mono_jit_stats.jit_optimize_branches2, mono_optimize_branches (cfg));
3671 mono_cfg_dump_ir (cfg, "optimize_branches2");
3672 }
3673 }
3674 #endif
3675
3676 if (cfg->comp_done & MONO_COMP_SSA && COMPILE_LLVM (cfg)) {
3677 mono_ssa_loop_invariant_code_motion (cfg);
3678 mono_cfg_dump_ir (cfg, "loop_invariant_code_motion");
3679 /* This removes MONO_INST_FAULT flags too so perform it unconditionally */
3680 if (cfg->opt & MONO_OPT_ABCREM) {
3681 mono_perform_abc_removal (cfg);
3682 mono_cfg_dump_ir (cfg, "abc_removal");
3683 }
3684 }
3685
3686 /* after SSA removal */
3687 if (parts == 3) {
3688 if (MONO_METHOD_COMPILE_END_ENABLED ())
3689 MONO_PROBE_METHOD_COMPILE_END (method, TRUE);
3690 return cfg;
3691 }
3692
3693 if (cfg->llvm_only && cfg->gsharedvt)
3694 mono_ssa_remove_gsharedvt (cfg);
3695
3696 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
3697 if (COMPILE_SOFT_FLOAT (cfg))
3698 mono_decompose_soft_float (cfg);
3699 #endif
3700 MONO_TIME_TRACK (mono_jit_stats.jit_decompose_vtype_opts, mono_decompose_vtype_opts (cfg));
3701 if (cfg->flags & MONO_CFG_HAS_ARRAY_ACCESS) {
3702 MONO_TIME_TRACK (mono_jit_stats.jit_decompose_array_access_opts, mono_decompose_array_access_opts (cfg));
3703 mono_cfg_dump_ir (cfg, "decompose_array_access_opts");
3704 }
3705
3706 if (cfg->got_var) {
3707 #ifndef MONO_ARCH_GOT_REG
3708 GList *regs;
3709 #endif
3710 int got_reg;
3711
3712 g_assert (cfg->got_var_allocated);
3713
3714 /*
3715 * Allways allocate the GOT var to a register, because keeping it
3716 * in memory will increase the number of live temporaries in some
3717 * code created by inssel.brg, leading to the well known spills+
3718 * branches problem. Testcase: mcs crash in
3719 * System.MonoCustomAttrs:GetCustomAttributes.
3720 */
3721 #ifdef MONO_ARCH_GOT_REG
3722 got_reg = MONO_ARCH_GOT_REG;
3723 #else
3724 regs = mono_arch_get_global_int_regs (cfg);
3725 g_assert (regs);
3726 got_reg = GPOINTER_TO_INT (regs->data);
3727 g_list_free (regs);
3728 #endif
3729 cfg->got_var->opcode = OP_REGVAR;
3730 cfg->got_var->dreg = got_reg;
3731 cfg->used_int_regs |= 1LL << cfg->got_var->dreg;
3732 }
3733
3734 /*
3735 * Have to call this again to process variables added since the first call.
3736 */
3737 MONO_TIME_TRACK(mono_jit_stats.jit_liveness_handle_exception_clauses2, mono_liveness_handle_exception_clauses (cfg));
3738
3739 if (cfg->opt & MONO_OPT_LINEARS) {
3740 GList *vars, *regs, *l;
3741
3742 /* fixme: maybe we can avoid to compute livenesss here if already computed ? */
3743 cfg->comp_done &= ~MONO_COMP_LIVENESS;
3744 if (!(cfg->comp_done & MONO_COMP_LIVENESS))
3745 MONO_TIME_TRACK (mono_jit_stats.jit_analyze_liveness, mono_analyze_liveness (cfg));
3746
3747 if ((vars = mono_arch_get_allocatable_int_vars (cfg))) {
3748 regs = mono_arch_get_global_int_regs (cfg);
3749 /* Remove the reg reserved for holding the GOT address */
3750 if (cfg->got_var) {
3751 for (l = regs; l; l = l->next) {
3752 if (GPOINTER_TO_UINT (l->data) == cfg->got_var->dreg) {
3753 regs = g_list_delete_link (regs, l);
3754 break;
3755 }
3756 }
3757 }
3758 MONO_TIME_TRACK (mono_jit_stats.jit_linear_scan, mono_linear_scan (cfg, vars, regs, &cfg->used_int_regs));
3759 mono_cfg_dump_ir (cfg, "linear_scan");
3760 }
3761 }
3762
3763 //mono_print_code (cfg, "");
3764
3765 //print_dfn (cfg);
3766
3767 /* variables are allocated after decompose, since decompose could create temps */
3768 if (!COMPILE_LLVM (cfg)) {
3769 MONO_TIME_TRACK (mono_jit_stats.jit_arch_allocate_vars, mono_arch_allocate_vars (cfg));
3770 mono_cfg_dump_ir (cfg, "arch_allocate_vars");
3771 if (cfg->exception_type)
3772 return cfg;
3773 }
3774
3775 if (cfg->gsharedvt)
3776 mono_allocate_gsharedvt_vars (cfg);
3777
3778 if (!COMPILE_LLVM (cfg)) {
3779 gboolean need_local_opts;
3780 MONO_TIME_TRACK (mono_jit_stats.jit_spill_global_vars, mono_spill_global_vars (cfg, &need_local_opts));
3781 mono_cfg_dump_ir (cfg, "spill_global_vars");
3782
3783 if (need_local_opts || cfg->compile_aot) {
3784 /* To optimize code created by spill_global_vars */
3785 MONO_TIME_TRACK (mono_jit_stats.jit_local_cprop3, mono_local_cprop (cfg));
3786 if (cfg->opt & MONO_OPT_DEADCE)
3787 MONO_TIME_TRACK (mono_jit_stats.jit_local_deadce3, mono_local_deadce (cfg));
3788 mono_cfg_dump_ir (cfg, "needs_local_opts");
3789 }
3790 }
3791
3792 mono_insert_branches_between_bblocks (cfg);
3793
3794 if (COMPILE_LLVM (cfg)) {
3795 #ifdef ENABLE_LLVM
3796 char *nm;
3797
3798 /* The IR has to be in SSA form for LLVM */
3799 if (!(cfg->comp_done & MONO_COMP_SSA)) {
3800 cfg->exception_message = g_strdup ("SSA disabled.");
3801 cfg->disable_llvm = TRUE;
3802 }
3803
3804 if (cfg->flags & MONO_CFG_HAS_ARRAY_ACCESS)
3805 mono_decompose_array_access_opts (cfg);
3806
3807 if (!cfg->disable_llvm)
3808 mono_llvm_emit_method (cfg);
3809 if (cfg->disable_llvm) {
3810 if (cfg->verbose_level >= (cfg->llvm_only ? 0 : 1)) {
3811 //nm = mono_method_full_name (cfg->method, TRUE);
3812 printf ("LLVM failed for '%s': %s\n", method->name, cfg->exception_message);
3813 //g_free (nm);
3814 }
3815 if (cfg->llvm_only) {
3816 cfg->disable_aot = TRUE;
3817 return cfg;
3818 }
3819 mono_destroy_compile (cfg);
3820 try_llvm = FALSE;
3821 goto restart_compile;
3822 }
3823
3824 if (cfg->verbose_level > 0 && !cfg->compile_aot) {
3825 nm = mono_method_full_name (cfg->method, TRUE);
3826 g_print ("LLVM Method %s emitted at %p to %p (code length %d) [%s]\n",
3827 nm,
3828 cfg->native_code, cfg->native_code + cfg->code_len, cfg->code_len, cfg->domain->friendly_name);
3829 g_free (nm);
3830 }
3831 #endif
3832 } else {
3833 MONO_TIME_TRACK (mono_jit_stats.jit_codegen, mono_codegen (cfg));
3834 mono_cfg_dump_ir (cfg, "codegen");
3835 if (cfg->exception_type)
3836 return cfg;
3837 }
3838
3839 if (COMPILE_LLVM (cfg))
3840 InterlockedIncrement (&mono_jit_stats.methods_with_llvm);
3841 else
3842 InterlockedIncrement (&mono_jit_stats.methods_without_llvm);
3843
3844 MONO_TIME_TRACK (mono_jit_stats.jit_create_jit_info, cfg->jit_info = create_jit_info (cfg, method_to_compile));
3845
3846 #ifdef MONO_ARCH_HAVE_LIVERANGE_OPS
3847 if (cfg->extend_live_ranges) {
3848 /* Extend live ranges to cover the whole method */
3849 for (i = 0; i < cfg->num_varinfo; ++i)
3850 MONO_VARINFO (cfg, i)->live_range_end = cfg->code_len;
3851 }
3852 #endif
3853
3854 MONO_TIME_TRACK (mono_jit_stats.jit_gc_create_gc_map, mini_gc_create_gc_map (cfg));
3855 MONO_TIME_TRACK (mono_jit_stats.jit_save_seq_point_info, mono_save_seq_point_info (cfg));
3856
3857 if (!cfg->compile_aot) {
3858 mono_save_xdebug_info (cfg);
3859 mono_lldb_save_method_info (cfg);
3860 }
3861
3862 if (cfg->verbose_level >= 2) {
3863 char *id = mono_method_full_name (cfg->method, FALSE);
3864 mono_disassemble_code (cfg, cfg->native_code, cfg->code_len, id + 3);
3865 g_free (id);
3866 }
3867
3868 if (!cfg->compile_aot && !(flags & JIT_FLAG_DISCARD_RESULTS)) {
3869 mono_domain_lock (cfg->domain);
3870 mono_jit_info_table_add (cfg->domain, cfg->jit_info);
3871
3872 if (cfg->method->dynamic)
3873 mono_dynamic_code_hash_lookup (cfg->domain, cfg->method)->ji = cfg->jit_info;
3874 mono_domain_unlock (cfg->domain);
3875 }
3876
3877 #if 0
3878 if (cfg->gsharedvt)
3879 printf ("GSHAREDVT: %s\n", mono_method_full_name (cfg->method, TRUE));
3880 #endif
3881
3882 /* collect statistics */
3883 #ifndef DISABLE_PERFCOUNTERS
3884 mono_perfcounters->jit_methods++;
3885 mono_perfcounters->jit_bytes += header->code_size;
3886 #endif
3887 mono_jit_stats.allocated_code_size += cfg->code_len;
3888 code_size_ratio = cfg->code_len;
3889 if (code_size_ratio > mono_jit_stats.biggest_method_size && mono_jit_stats.enabled) {
3890 mono_jit_stats.biggest_method_size = code_size_ratio;
3891 g_free (mono_jit_stats.biggest_method);
3892 mono_jit_stats.biggest_method = g_strdup_printf ("%s::%s)", method->klass->name, method->name);
3893 }
3894 code_size_ratio = (code_size_ratio * 100) / header->code_size;
3895 if (code_size_ratio > mono_jit_stats.max_code_size_ratio && mono_jit_stats.enabled) {
3896 mono_jit_stats.max_code_size_ratio = code_size_ratio;
3897 g_free (mono_jit_stats.max_ratio_method);
3898 mono_jit_stats.max_ratio_method = g_strdup_printf ("%s::%s)", method->klass->name, method->name);
3899 }
3900 mono_jit_stats.native_code_size += cfg->code_len;
3901
3902 if (MONO_METHOD_COMPILE_END_ENABLED ())
3903 MONO_PROBE_METHOD_COMPILE_END (method, TRUE);
3904
3905 mono_cfg_dump_close_group (cfg);
3906
3907 return cfg;
3908 }
3909
3910 gboolean
3911 mini_class_has_reference_variant_generic_argument (MonoCompile *cfg, MonoClass *klass, int context_used)
3912 {
3913 int i;
3914 MonoGenericContainer *container;
3915 MonoGenericInst *ginst;
3916
3917 if (mono_class_is_ginst (klass)) {
3918 container = mono_class_get_generic_container (mono_class_get_generic_class (klass)->container_class);
3919 ginst = mono_class_get_generic_class (klass)->context.class_inst;
3920 } else if (mono_class_is_gtd (klass) && context_used) {
3921 container = mono_class_get_generic_container (klass);
3922 ginst = container->context.class_inst;
3923 } else {
3924 return FALSE;
3925 }
3926
3927 for (i = 0; i < container->type_argc; ++i) {
3928 MonoType *type;
3929 if (!(mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT)))
3930 continue;
3931 type = ginst->type_argv [i];
3932 if (mini_type_is_reference (type))
3933 return TRUE;
3934 }
3935 return FALSE;
3936 }
3937
3938 void*
3939 mono_arch_instrument_epilog (MonoCompile *cfg, void *func, void *p, gboolean enable_arguments)
3940 {
3941 return mono_arch_instrument_epilog_full (cfg, func, p, enable_arguments, FALSE);
3942 }
3943
3944 void
3945 mono_cfg_add_try_hole (MonoCompile *cfg, MonoExceptionClause *clause, guint8 *start, MonoBasicBlock *bb)
3946 {
3947 TryBlockHole *hole = (TryBlockHole *)mono_mempool_alloc (cfg->mempool, sizeof (TryBlockHole));
3948 hole->clause = clause;
3949 hole->start_offset = start - cfg->native_code;
3950 hole->basic_block = bb;
3951
3952 cfg->try_block_holes = g_slist_append_mempool (cfg->mempool, cfg->try_block_holes, hole);
3953 }
3954
3955 void
3956 mono_cfg_set_exception (MonoCompile *cfg, int type)
3957 {
3958 cfg->exception_type = type;
3959 }
3960
3961 /* Assumes ownership of the MSG argument */
3962 void
3963 mono_cfg_set_exception_invalid_program (MonoCompile *cfg, char *msg)
3964 {
3965 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
3966 mono_error_set_generic_error (&cfg->error, "System", "InvalidProgramException", "%s", msg);
3967 }
3968
3969 #endif /* DISABLE_JIT */
3970
3971 static MonoJitInfo*
3972 create_jit_info_for_trampoline (MonoMethod *wrapper, MonoTrampInfo *info)
3973 {
3974 MonoDomain *domain = mono_get_root_domain ();
3975 MonoJitInfo *jinfo;
3976 guint8 *uw_info;
3977 guint32 info_len;
3978
3979 if (info->uw_info) {
3980 uw_info = info->uw_info;
3981 info_len = info->uw_info_len;
3982 } else {
3983 uw_info = mono_unwind_ops_encode (info->unwind_ops, &info_len);
3984 }
3985
3986 jinfo = (MonoJitInfo *)mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO);
3987 jinfo->d.method = wrapper;
3988 jinfo->code_start = info->code;
3989 jinfo->code_size = info->code_size;
3990 jinfo->unwind_info = mono_cache_unwind_info (uw_info, info_len);
3991
3992 if (!info->uw_info)
3993 g_free (uw_info);
3994
3995 return jinfo;
3996 }
3997
3998 GTimer *mono_time_track_start ()
3999 {
4000 return g_timer_new ();
4001 }
4002
4003 void mono_time_track_end (double *time, GTimer *timer)
4004 {
4005 g_timer_stop (timer);
4006 *time += g_timer_elapsed (timer, NULL);
4007 g_timer_destroy (timer);
4008 }
4009
4010 void mono_update_jit_stats (MonoCompile *cfg)
4011 {
4012 mono_jit_stats.allocate_var += cfg->stat_allocate_var;
4013 mono_jit_stats.locals_stack_size += cfg->stat_locals_stack_size;
4014 mono_jit_stats.basic_blocks += cfg->stat_basic_blocks;
4015 mono_jit_stats.max_basic_blocks = MAX (cfg->stat_basic_blocks, mono_jit_stats.max_basic_blocks);
4016 mono_jit_stats.cil_code_size += cfg->stat_cil_code_size;
4017 mono_jit_stats.regvars += cfg->stat_n_regvars;
4018 mono_jit_stats.inlineable_methods += cfg->stat_inlineable_methods;
4019 mono_jit_stats.inlined_methods += cfg->stat_inlined_methods;
4020 mono_jit_stats.code_reallocs += cfg->stat_code_reallocs;
4021 }
4022
4023 /*
4024 * mono_jit_compile_method_inner:
4025 *
4026 * Main entry point for the JIT.
4027 */
4028 gpointer
4029 mono_jit_compile_method_inner (MonoMethod *method, MonoDomain *target_domain, int opt, MonoError *error)
4030 {
4031 MonoCompile *cfg;
4032 gpointer code = NULL;
4033 MonoJitInfo *jinfo, *info;
4034 MonoVTable *vtable;
4035 MonoException *ex = NULL;
4036 GTimer *jit_timer;
4037 MonoMethod *prof_method, *shared;
4038
4039 error_init (error);
4040
4041 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
4042 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
4043 MonoMethod *nm;
4044 MonoMethodPInvoke* piinfo = (MonoMethodPInvoke *) method;
4045
4046 if (!piinfo->addr) {
4047 if (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
4048 piinfo->addr = mono_lookup_internal_call (method);
4049 else if (method->iflags & METHOD_IMPL_ATTRIBUTE_NATIVE)
4050 #ifdef HOST_WIN32
4051 g_warning ("Method '%s' in assembly '%s' contains native code that cannot be executed by Mono in modules loaded from byte arrays. The assembly was probably created using C++/CLI.\n", mono_method_full_name (method, TRUE), method->klass->image->name);
4052 #else
4053 g_warning ("Method '%s' in assembly '%s' contains native code that cannot be executed by Mono on this platform. The assembly was probably created using C++/CLI.\n", mono_method_full_name (method, TRUE), method->klass->image->name);
4054 #endif
4055 else
4056 mono_lookup_pinvoke_call (method, NULL, NULL);
4057 }
4058 nm = mono_marshal_get_native_wrapper (method, TRUE, mono_aot_only);
4059 gpointer compiled_method = mono_compile_method_checked (nm, error);
4060 return_val_if_nok (error, NULL);
4061 code = mono_get_addr_from_ftnptr (compiled_method);
4062 jinfo = mono_jit_info_table_find (target_domain, (char *)code);
4063 if (!jinfo)
4064 jinfo = mono_jit_info_table_find (mono_domain_get (), (char *)code);
4065 if (jinfo)
4066 MONO_PROFILER_RAISE (jit_done, (method, jinfo));
4067 return code;
4068 } else if ((method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME)) {
4069 const char *name = method->name;
4070 char *full_name, *msg;
4071 MonoMethod *nm;
4072
4073 if (method->klass->parent == mono_defaults.multicastdelegate_class) {
4074 if (*name == '.' && (strcmp (name, ".ctor") == 0)) {
4075 MonoJitICallInfo *mi = mono_find_jit_icall_by_name ("ves_icall_mono_delegate_ctor");
4076 g_assert (mi);
4077 /*
4078 * We need to make sure this wrapper
4079 * is compiled because it might end up
4080 * in an (M)RGCTX if generic sharing
4081 * is enabled, and would be called
4082 * indirectly. If it were a
4083 * trampoline we'd try to patch that
4084 * indirect call, which is not
4085 * possible.
4086 */
4087 return mono_get_addr_from_ftnptr ((gpointer)mono_icall_get_wrapper_full (mi, TRUE));
4088 } else if (*name == 'I' && (strcmp (name, "Invoke") == 0)) {
4089 if (mono_llvm_only) {
4090 nm = mono_marshal_get_delegate_invoke (method, NULL);
4091 gpointer compiled_ptr = mono_compile_method_checked (nm, error);
4092 mono_error_assert_ok (error);
4093 return mono_get_addr_from_ftnptr (compiled_ptr);
4094 }
4095 return mono_create_delegate_trampoline (target_domain, method->klass);
4096 } else if (*name == 'B' && (strcmp (name, "BeginInvoke") == 0)) {
4097 nm = mono_marshal_get_delegate_begin_invoke (method);
4098 gpointer compiled_ptr = mono_compile_method_checked (nm, error);
4099 mono_error_assert_ok (error);
4100 return mono_get_addr_from_ftnptr (compiled_ptr);
4101 } else if (*name == 'E' && (strcmp (name, "EndInvoke") == 0)) {
4102 nm = mono_marshal_get_delegate_end_invoke (method);
4103 gpointer compiled_ptr = mono_compile_method_checked (nm, error);
4104 mono_error_assert_ok (error);
4105 return mono_get_addr_from_ftnptr (compiled_ptr);
4106 }
4107 }
4108
4109 full_name = mono_method_full_name (method, TRUE);
4110 msg = g_strdup_printf ("Unrecognizable runtime implemented method '%s'", full_name);
4111 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "InvalidProgramException", msg);
4112 mono_error_set_exception_instance (error, ex);
4113 g_free (full_name);
4114 g_free (msg);
4115 return NULL;
4116 }
4117
4118 if (method->wrapper_type == MONO_WRAPPER_UNKNOWN) {
4119 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
4120
4121 if (info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN || info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) {
4122 static MonoTrampInfo *in_tinfo, *out_tinfo;
4123 MonoTrampInfo *tinfo;
4124 MonoJitInfo *jinfo;
4125 gboolean is_in = info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN;
4126
4127 if (is_in && in_tinfo)
4128 return in_tinfo->code;
4129 else if (!is_in && out_tinfo)
4130 return out_tinfo->code;
4131
4132 /*
4133 * This is a special wrapper whose body is implemented in assembly, like a trampoline. We use a wrapper so EH
4134 * works.
4135 * FIXME: The caller signature doesn't match the callee, which might cause problems on some platforms
4136 */
4137 if (mono_aot_only)
4138 mono_aot_get_trampoline_full (is_in ? "gsharedvt_trampoline" : "gsharedvt_out_trampoline", &tinfo);
4139 else
4140 mono_arch_get_gsharedvt_trampoline (&tinfo, FALSE);
4141 jinfo = create_jit_info_for_trampoline (method, tinfo);
4142 mono_jit_info_table_add (mono_get_root_domain (), jinfo);
4143 if (is_in)
4144 in_tinfo = tinfo;
4145 else
4146 out_tinfo = tinfo;
4147 return tinfo->code;
4148 }
4149 }
4150
4151 if (mono_aot_only) {
4152 char *fullname = mono_method_full_name (method, TRUE);
4153 mono_error_set_execution_engine (error, "Attempting to JIT compile method '%s' while running in aot-only mode. See https://developer.xamarin.com/guides/ios/advanced_topics/limitations/ for more information.\n", fullname);
4154 g_free (fullname);
4155
4156 return NULL;
4157 }
4158
4159 jit_timer = mono_time_track_start ();
4160 cfg = mini_method_compile (method, opt, target_domain, JIT_FLAG_RUN_CCTORS, 0, -1);
4161 double jit_time = 0.0;
4162 mono_time_track_end (&jit_time, jit_timer);
4163 mono_jit_stats.jit_time += jit_time;
4164
4165 prof_method = cfg->method;
4166
4167 switch (cfg->exception_type) {
4168 case MONO_EXCEPTION_NONE:
4169 break;
4170 case MONO_EXCEPTION_TYPE_LOAD:
4171 case MONO_EXCEPTION_MISSING_FIELD:
4172 case MONO_EXCEPTION_MISSING_METHOD:
4173 case MONO_EXCEPTION_FILE_NOT_FOUND:
4174 case MONO_EXCEPTION_BAD_IMAGE:
4175 case MONO_EXCEPTION_INVALID_PROGRAM: {
4176 /* Throw a type load exception if needed */
4177 if (cfg->exception_ptr) {
4178 ex = mono_class_get_exception_for_failure ((MonoClass *)cfg->exception_ptr);
4179 } else {
4180 if (cfg->exception_type == MONO_EXCEPTION_MISSING_FIELD)
4181 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "MissingFieldException", cfg->exception_message);
4182 else if (cfg->exception_type == MONO_EXCEPTION_MISSING_METHOD)
4183 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "MissingMethodException", cfg->exception_message);
4184 else if (cfg->exception_type == MONO_EXCEPTION_TYPE_LOAD)
4185 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "TypeLoadException", cfg->exception_message);
4186 else if (cfg->exception_type == MONO_EXCEPTION_FILE_NOT_FOUND)
4187 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System.IO", "FileNotFoundException", cfg->exception_message);
4188 else if (cfg->exception_type == MONO_EXCEPTION_BAD_IMAGE)
4189 ex = mono_get_exception_bad_image_format (cfg->exception_message);
4190 else if (cfg->exception_type == MONO_EXCEPTION_INVALID_PROGRAM)
4191 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "InvalidProgramException", cfg->exception_message);
4192 else
4193 g_assert_not_reached ();
4194 }
4195 break;
4196 }
4197 case MONO_EXCEPTION_MONO_ERROR:
4198 // FIXME: MonoError has no copy ctor
4199 g_assert (!mono_error_ok (&cfg->error));
4200 ex = mono_error_convert_to_exception (&cfg->error);
4201 break;
4202 default:
4203 g_assert_not_reached ();
4204 }
4205
4206 if (ex) {
4207 MONO_PROFILER_RAISE (jit_failed, (method));
4208
4209 mono_destroy_compile (cfg);
4210 mono_error_set_exception_instance (error, ex);
4211
4212 return NULL;
4213 }
4214
4215 if (mono_method_is_generic_sharable (method, FALSE))
4216 shared = mini_get_shared_method (method);
4217 else
4218 shared = NULL;
4219
4220 mono_domain_lock (target_domain);
4221
4222 /* Check if some other thread already did the job. In this case, we can
4223 discard the code this thread generated. */
4224
4225 info = mini_lookup_method (target_domain, method, shared);
4226 if (info) {
4227 /* We can't use a domain specific method in another domain */
4228 if ((target_domain == mono_domain_get ()) || info->domain_neutral) {
4229 code = info->code_start;
4230 discarded_code ++;
4231 discarded_jit_time += jit_time;
4232 }
4233 }
4234 if (code == NULL) {
4235 /* The lookup + insert is atomic since this is done inside the domain lock */
4236 mono_domain_jit_code_hash_lock (target_domain);
4237 mono_internal_hash_table_insert (&target_domain->jit_code_hash, cfg->jit_info->d.method, cfg->jit_info);
4238 mono_domain_jit_code_hash_unlock (target_domain);
4239
4240 code = cfg->native_code;
4241
4242 if (cfg->gshared && mono_method_is_generic_sharable (method, FALSE))
4243 mono_stats.generics_shared_methods++;
4244 if (cfg->gsharedvt)
4245 mono_stats.gsharedvt_methods++;
4246 }
4247
4248 jinfo = cfg->jit_info;
4249
4250 /*
4251 * Update global stats while holding a lock, instead of doing many
4252 * InterlockedIncrement operations during JITting.
4253 */
4254 mono_update_jit_stats (cfg);
4255
4256 mono_destroy_compile (cfg);
4257
4258 #ifndef DISABLE_JIT
4259 if (domain_jit_info (target_domain)->jump_target_hash) {
4260 MonoJumpInfo patch_info;
4261 MonoJumpList *jlist;
4262 GSList *tmp;
4263 jlist = (MonoJumpList *)g_hash_table_lookup (domain_jit_info (target_domain)->jump_target_hash, method);
4264 if (jlist) {
4265 patch_info.next = NULL;
4266 patch_info.ip.i = 0;
4267 patch_info.type = MONO_PATCH_INFO_METHOD_JUMP;
4268 patch_info.data.method = method;
4269 g_hash_table_remove (domain_jit_info (target_domain)->jump_target_hash, method);
4270
4271 #ifdef MONO_ARCH_HAVE_PATCH_CODE_NEW
4272 for (tmp = jlist->list; tmp; tmp = tmp->next) {
4273 gpointer target = mono_resolve_patch_target (NULL, target_domain, (guint8 *)tmp->data, &patch_info, TRUE, error);
4274 if (!mono_error_ok (error))
4275 break;
4276 mono_arch_patch_code_new (NULL, target_domain, (guint8 *)tmp->data, &patch_info, target);
4277 }
4278 #else
4279 for (tmp = jlist->list; tmp; tmp = tmp->next) {
4280 mono_arch_patch_code (NULL, NULL, target_domain, tmp->data, &patch_info, TRUE, error);
4281 if (!is_ok (error))
4282 break;
4283 }
4284 #endif
4285 }
4286 }
4287
4288 /* Update llvm callees */
4289 if (domain_jit_info (target_domain)->llvm_jit_callees) {
4290 GSList *callees = g_hash_table_lookup (domain_jit_info (target_domain)->llvm_jit_callees, method);
4291 GSList *l;
4292
4293 for (l = callees; l; l = l->next) {
4294 gpointer *addr = (gpointer*)l->data;
4295
4296 *addr = code;
4297 }
4298 }
4299
4300 mono_emit_jit_map (jinfo);
4301 #endif
4302 mono_domain_unlock (target_domain);
4303
4304 if (!mono_error_ok (error))
4305 return NULL;
4306
4307 vtable = mono_class_vtable (target_domain, method->klass);
4308 if (!vtable) {
4309 g_assert (mono_class_has_failure (method->klass));
4310 mono_error_set_for_class_failure (error, method->klass);
4311 return NULL;
4312 }
4313
4314 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
4315 if (mono_marshal_method_from_wrapper (method)) {
4316 /* Native func wrappers have no method */
4317 /* The profiler doesn't know about wrappers, so pass the original icall method */
4318 MONO_PROFILER_RAISE (jit_done, (mono_marshal_method_from_wrapper (method), jinfo));
4319 }
4320 }
4321 MONO_PROFILER_RAISE (jit_done, (method, jinfo));
4322 if (prof_method != method)
4323 MONO_PROFILER_RAISE (jit_done, (prof_method, jinfo));
4324
4325 if (!(method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE ||
4326 method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK ||
4327 method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE)) {
4328 if (!mono_runtime_class_init_full (vtable, error))
4329 return NULL;
4330 }
4331 return code;
4332 }
4333
4334 /*
4335 * mini_get_underlying_type:
4336 *
4337 * Return the type the JIT will use during compilation.
4338 * Handles: byref, enums, native types, bool/char, ref types, generic sharing.
4339 * For gsharedvt types, it will return the original VAR/MVAR.
4340 */
4341 MonoType*
4342 mini_get_underlying_type (MonoType *type)
4343 {
4344 return mini_type_get_underlying_type (type);
4345 }
4346
4347 void
4348 mini_jit_init (void)
4349 {
4350 mono_counters_register ("Discarded method code", MONO_COUNTER_JIT | MONO_COUNTER_INT, &discarded_code);
4351 mono_counters_register ("Time spent JITting discarded code", MONO_COUNTER_JIT | MONO_COUNTER_DOUBLE, &discarded_jit_time);
4352
4353 mono_os_mutex_init_recursive (&jit_mutex);
4354 #ifndef DISABLE_JIT
4355 current_backend = g_new0 (MonoBackend, 1);
4356 init_backend (current_backend);
4357 #endif
4358 }
4359
4360 void
4361 mini_jit_cleanup (void)
4362 {
4363 #ifndef DISABLE_JIT
4364 g_free (emul_opcode_map);
4365 g_free (emul_opcode_opcodes);
4366 #endif
4367 }
4368
4369 #ifndef ENABLE_LLVM
4370 void
4371 mono_llvm_emit_aot_file_info (MonoAotFileInfo *info, gboolean has_jitted_code)
4372 {
4373 g_assert_not_reached ();
4374 }
4375
4376 void mono_llvm_emit_aot_data (const char *symbol, guint8 *data, int data_len)
4377 {
4378 g_assert_not_reached ();
4379 }
4380
4381 #endif
4382
4383 #if !defined(ENABLE_LLVM_RUNTIME) && !defined(ENABLE_LLVM)
4384
4385 void
4386 mono_llvm_cpp_throw_exception (void)
4387 {
4388 g_assert_not_reached ();
4389 }
4390
4391 #endif
4392
4393 #ifdef DISABLE_JIT
4394
4395 MonoCompile*
4396 mini_method_compile (MonoMethod *method, guint32 opts, MonoDomain *domain, JitFlags flags, int parts, int aot_method_index)
4397 {
4398 g_assert_not_reached ();
4399 return NULL;
4400 }
4401
4402 void
4403 mono_destroy_compile (MonoCompile *cfg)
4404 {
4405 g_assert_not_reached ();
4406 }
4407
4408 void
4409 mono_add_patch_info (MonoCompile *cfg, int ip, MonoJumpInfoType type, gconstpointer target)
4410 {
4411 g_assert_not_reached ();
4412 }
4413
4414 #endif /* DISABLE_JIT */
Mirror of the official Mono project git repository