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Remove some malloc from JIT icall registration. (#14431)
[mono-project.git] / mono / mini / mini.c
blob8bbd3b74af200bc50d915b0af75a17536d84cfc1
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 #include <mono/utils/unlocked.h>
64 #include <mono/utils/mono-time.h>
65
66 #include "mini.h"
67 #include "seq-points.h"
68 #include "tasklets.h"
69 #include <string.h>
70 #include <ctype.h>
71 #include "trace.h"
72 #include "version.h"
73 #include "ir-emit.h"
74
75 #include "jit-icalls.h"
76
77 #include "mini-gc.h"
78 #include "debugger-agent.h"
79 #include "llvm-runtime.h"
80 #include "mini-llvm.h"
81 #include "lldb.h"
82 #include "aot-runtime.h"
83 #include "mini-runtime.h"
84
85 MonoCallSpec *mono_jit_trace_calls;
86 MonoMethodDesc *mono_inject_async_exc_method;
87 int mono_inject_async_exc_pos;
88 MonoMethodDesc *mono_break_at_bb_method;
89 int mono_break_at_bb_bb_num;
90 gboolean mono_do_x86_stack_align = TRUE;
91 gboolean mono_using_xdebug;
92
93 /* Counters */
94 static guint32 discarded_code;
95 static gint64 discarded_jit_time;
96 static guint32 jinfo_try_holes_size;
97
98 #define mono_jit_lock() mono_os_mutex_lock (&jit_mutex)
99 #define mono_jit_unlock() mono_os_mutex_unlock (&jit_mutex)
100 static mono_mutex_t jit_mutex;
101
102 static MonoBackend *current_backend;
103
104 #ifndef DISABLE_JIT
105
106 gpointer
107 mono_realloc_native_code (MonoCompile *cfg)
108 {
109 return g_realloc (cfg->native_code, cfg->code_size);
110 }
111
112 typedef struct {
113 MonoExceptionClause *clause;
114 MonoBasicBlock *basic_block;
115 int start_offset;
116 } TryBlockHole;
117
118 /**
119 * mono_emit_unwind_op:
120 *
121 * Add an unwind op with the given parameters for the list of unwind ops stored in
122 * cfg->unwind_ops.
123 */
124 void
125 mono_emit_unwind_op (MonoCompile *cfg, int when, int tag, int reg, int val)
126 {
127 MonoUnwindOp *op = (MonoUnwindOp *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoUnwindOp));
128
129 op->op = tag;
130 op->reg = reg;
131 op->val = val;
132 op->when = when;
133
134 cfg->unwind_ops = g_slist_append_mempool (cfg->mempool, cfg->unwind_ops, op);
135 if (cfg->verbose_level > 1) {
136 switch (tag) {
137 case DW_CFA_def_cfa:
138 printf ("CFA: [%x] def_cfa: %s+0x%x\n", when, mono_arch_regname (reg), val);
139 break;
140 case DW_CFA_def_cfa_register:
141 printf ("CFA: [%x] def_cfa_reg: %s\n", when, mono_arch_regname (reg));
142 break;
143 case DW_CFA_def_cfa_offset:
144 printf ("CFA: [%x] def_cfa_offset: 0x%x\n", when, val);
145 break;
146 case DW_CFA_offset:
147 printf ("CFA: [%x] offset: %s at cfa-0x%x\n", when, mono_arch_regname (reg), -val);
148 break;
149 }
150 }
151 }
152
153 /**
154 * mono_unlink_bblock:
155 *
156 * Unlink two basic blocks.
157 */
158 void
159 mono_unlink_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
160 {
161 int i, pos;
162 gboolean found;
163
164 found = FALSE;
165 for (i = 0; i < from->out_count; ++i) {
166 if (to == from->out_bb [i]) {
167 found = TRUE;
168 break;
169 }
170 }
171 if (found) {
172 pos = 0;
173 for (i = 0; i < from->out_count; ++i) {
174 if (from->out_bb [i] != to)
175 from->out_bb [pos ++] = from->out_bb [i];
176 }
177 g_assert (pos == from->out_count - 1);
178 from->out_count--;
179 }
180
181 found = FALSE;
182 for (i = 0; i < to->in_count; ++i) {
183 if (from == to->in_bb [i]) {
184 found = TRUE;
185 break;
186 }
187 }
188 if (found) {
189 pos = 0;
190 for (i = 0; i < to->in_count; ++i) {
191 if (to->in_bb [i] != from)
192 to->in_bb [pos ++] = to->in_bb [i];
193 }
194 g_assert (pos == to->in_count - 1);
195 to->in_count--;
196 }
197 }
198
199 /*
200 * mono_bblocks_linked:
201 *
202 * Return whenever BB1 and BB2 are linked in the CFG.
203 */
204 gboolean
205 mono_bblocks_linked (MonoBasicBlock *bb1, MonoBasicBlock *bb2)
206 {
207 int i;
208
209 for (i = 0; i < bb1->out_count; ++i) {
210 if (bb1->out_bb [i] == bb2)
211 return TRUE;
212 }
213
214 return FALSE;
215 }
216
217 static int
218 mono_find_block_region_notry (MonoCompile *cfg, int offset)
219 {
220 MonoMethodHeader *header = cfg->header;
221 MonoExceptionClause *clause;
222 int i;
223
224 for (i = 0; i < header->num_clauses; ++i) {
225 clause = &header->clauses [i];
226 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
227 (offset < (clause->handler_offset)))
228 return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
229
230 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
231 if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
232 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
233 else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
234 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
235 else
236 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
237 }
238 }
239
240 return -1;
241 }
242
243 /*
244 * mono_get_block_region_notry:
245 *
246 * Return the region corresponding to REGION, ignoring try clauses nested inside
247 * finally clauses.
248 */
249 int
250 mono_get_block_region_notry (MonoCompile *cfg, int region)
251 {
252 if ((region & (0xf << 4)) == MONO_REGION_TRY) {
253 MonoMethodHeader *header = cfg->header;
254
255 /*
256 * This can happen if a try clause is nested inside a finally clause.
257 */
258 int clause_index = (region >> 8) - 1;
259 g_assert (clause_index >= 0 && clause_index < header->num_clauses);
260
261 region = mono_find_block_region_notry (cfg, header->clauses [clause_index].try_offset);
262 }
263
264 return region;
265 }
266
267 MonoInst *
268 mono_find_spvar_for_region (MonoCompile *cfg, int region)
269 {
270 region = mono_get_block_region_notry (cfg, region);
271
272 return (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
273 }
274
275 static void
276 df_visit (MonoBasicBlock *start, int *dfn, MonoBasicBlock **array)
277 {
278 int i;
279
280 array [*dfn] = start;
281 /* g_print ("visit %d at %p (BB%ld)\n", *dfn, start->cil_code, start->block_num); */
282 for (i = 0; i < start->out_count; ++i) {
283 if (start->out_bb [i]->dfn)
284 continue;
285 (*dfn)++;
286 start->out_bb [i]->dfn = *dfn;
287 start->out_bb [i]->df_parent = start;
288 array [*dfn] = start->out_bb [i];
289 df_visit (start->out_bb [i], dfn, array);
290 }
291 }
292
293 guint32
294 mono_reverse_branch_op (guint32 opcode)
295 {
296 static const int reverse_map [] = {
297 CEE_BNE_UN, CEE_BLT, CEE_BLE, CEE_BGT, CEE_BGE,
298 CEE_BEQ, CEE_BLT_UN, CEE_BLE_UN, CEE_BGT_UN, CEE_BGE_UN
299 };
300 static const int reverse_fmap [] = {
301 OP_FBNE_UN, OP_FBLT, OP_FBLE, OP_FBGT, OP_FBGE,
302 OP_FBEQ, OP_FBLT_UN, OP_FBLE_UN, OP_FBGT_UN, OP_FBGE_UN
303 };
304 static const int reverse_lmap [] = {
305 OP_LBNE_UN, OP_LBLT, OP_LBLE, OP_LBGT, OP_LBGE,
306 OP_LBEQ, OP_LBLT_UN, OP_LBLE_UN, OP_LBGT_UN, OP_LBGE_UN
307 };
308 static const int reverse_imap [] = {
309 OP_IBNE_UN, OP_IBLT, OP_IBLE, OP_IBGT, OP_IBGE,
310 OP_IBEQ, OP_IBLT_UN, OP_IBLE_UN, OP_IBGT_UN, OP_IBGE_UN
311 };
312
313 if (opcode >= CEE_BEQ && opcode <= CEE_BLT_UN) {
314 opcode = reverse_map [opcode - CEE_BEQ];
315 } else if (opcode >= OP_FBEQ && opcode <= OP_FBLT_UN) {
316 opcode = reverse_fmap [opcode - OP_FBEQ];
317 } else if (opcode >= OP_LBEQ && opcode <= OP_LBLT_UN) {
318 opcode = reverse_lmap [opcode - OP_LBEQ];
319 } else if (opcode >= OP_IBEQ && opcode <= OP_IBLT_UN) {
320 opcode = reverse_imap [opcode - OP_IBEQ];
321 } else
322 g_assert_not_reached ();
323
324 return opcode;
325 }
326
327 guint
328 mono_type_to_store_membase (MonoCompile *cfg, MonoType *type)
329 {
330 type = mini_get_underlying_type (type);
331
332 handle_enum:
333 switch (type->type) {
334 case MONO_TYPE_I1:
335 case MONO_TYPE_U1:
336 return OP_STOREI1_MEMBASE_REG;
337 case MONO_TYPE_I2:
338 case MONO_TYPE_U2:
339 return OP_STOREI2_MEMBASE_REG;
340 case MONO_TYPE_I4:
341 case MONO_TYPE_U4:
342 return OP_STOREI4_MEMBASE_REG;
343 case MONO_TYPE_I:
344 case MONO_TYPE_U:
345 case MONO_TYPE_PTR:
346 case MONO_TYPE_FNPTR:
347 return OP_STORE_MEMBASE_REG;
348 case MONO_TYPE_CLASS:
349 case MONO_TYPE_STRING:
350 case MONO_TYPE_OBJECT:
351 case MONO_TYPE_SZARRAY:
352 case MONO_TYPE_ARRAY:
353 return OP_STORE_MEMBASE_REG;
354 case MONO_TYPE_I8:
355 case MONO_TYPE_U8:
356 return OP_STOREI8_MEMBASE_REG;
357 case MONO_TYPE_R4:
358 return OP_STORER4_MEMBASE_REG;
359 case MONO_TYPE_R8:
360 return OP_STORER8_MEMBASE_REG;
361 case MONO_TYPE_VALUETYPE:
362 if (m_class_is_enumtype (type->data.klass)) {
363 type = mono_class_enum_basetype_internal (type->data.klass);
364 goto handle_enum;
365 }
366 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type_internal (type)))
367 return OP_STOREX_MEMBASE;
368 return OP_STOREV_MEMBASE;
369 case MONO_TYPE_TYPEDBYREF:
370 return OP_STOREV_MEMBASE;
371 case MONO_TYPE_GENERICINST:
372 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type_internal (type)))
373 return OP_STOREX_MEMBASE;
374 type = m_class_get_byval_arg (type->data.generic_class->container_class);
375 goto handle_enum;
376 case MONO_TYPE_VAR:
377 case MONO_TYPE_MVAR:
378 g_assert (mini_type_var_is_vt (type));
379 return OP_STOREV_MEMBASE;
380 default:
381 g_error ("unknown type 0x%02x in type_to_store_membase", type->type);
382 }
383 return -1;
384 }
385
386 guint
387 mono_type_to_load_membase (MonoCompile *cfg, MonoType *type)
388 {
389 type = mini_get_underlying_type (type);
390
391 switch (type->type) {
392 case MONO_TYPE_I1:
393 return OP_LOADI1_MEMBASE;
394 case MONO_TYPE_U1:
395 return OP_LOADU1_MEMBASE;
396 case MONO_TYPE_I2:
397 return OP_LOADI2_MEMBASE;
398 case MONO_TYPE_U2:
399 return OP_LOADU2_MEMBASE;
400 case MONO_TYPE_I4:
401 return OP_LOADI4_MEMBASE;
402 case MONO_TYPE_U4:
403 return OP_LOADU4_MEMBASE;
404 case MONO_TYPE_I:
405 case MONO_TYPE_U:
406 case MONO_TYPE_PTR:
407 case MONO_TYPE_FNPTR:
408 return OP_LOAD_MEMBASE;
409 case MONO_TYPE_CLASS:
410 case MONO_TYPE_STRING:
411 case MONO_TYPE_OBJECT:
412 case MONO_TYPE_SZARRAY:
413 case MONO_TYPE_ARRAY:
414 return OP_LOAD_MEMBASE;
415 case MONO_TYPE_I8:
416 case MONO_TYPE_U8:
417 return OP_LOADI8_MEMBASE;
418 case MONO_TYPE_R4:
419 return OP_LOADR4_MEMBASE;
420 case MONO_TYPE_R8:
421 return OP_LOADR8_MEMBASE;
422 case MONO_TYPE_VALUETYPE:
423 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type_internal (type)))
424 return OP_LOADX_MEMBASE;
425 case MONO_TYPE_TYPEDBYREF:
426 return OP_LOADV_MEMBASE;
427 case MONO_TYPE_GENERICINST:
428 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type_internal (type)))
429 return OP_LOADX_MEMBASE;
430 if (mono_type_generic_inst_is_valuetype (type))
431 return OP_LOADV_MEMBASE;
432 else
433 return OP_LOAD_MEMBASE;
434 break;
435 case MONO_TYPE_VAR:
436 case MONO_TYPE_MVAR:
437 g_assert (cfg->gshared);
438 g_assert (mini_type_var_is_vt (type));
439 return OP_LOADV_MEMBASE;
440 default:
441 g_error ("unknown type 0x%02x in type_to_load_membase", type->type);
442 }
443 return -1;
444 }
445
446 guint
447 mini_type_to_stind (MonoCompile* cfg, MonoType *type)
448 {
449 type = mini_get_underlying_type (type);
450 if (cfg->gshared && !type->byref && (type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR)) {
451 g_assert (mini_type_var_is_vt (type));
452 return CEE_STOBJ;
453 }
454 return mono_type_to_stind (type);
455 }
456
457 int
458 mono_op_imm_to_op (int opcode)
459 {
460 switch (opcode) {
461 case OP_ADD_IMM:
462 #if SIZEOF_REGISTER == 4
463 return OP_IADD;
464 #else
465 return OP_LADD;
466 #endif
467 case OP_IADD_IMM:
468 return OP_IADD;
469 case OP_LADD_IMM:
470 return OP_LADD;
471 case OP_ISUB_IMM:
472 return OP_ISUB;
473 case OP_LSUB_IMM:
474 return OP_LSUB;
475 case OP_IMUL_IMM:
476 return OP_IMUL;
477 case OP_LMUL_IMM:
478 return OP_LMUL;
479 case OP_AND_IMM:
480 #if SIZEOF_REGISTER == 4
481 return OP_IAND;
482 #else
483 return OP_LAND;
484 #endif
485 case OP_OR_IMM:
486 #if SIZEOF_REGISTER == 4
487 return OP_IOR;
488 #else
489 return OP_LOR;
490 #endif
491 case OP_XOR_IMM:
492 #if SIZEOF_REGISTER == 4
493 return OP_IXOR;
494 #else
495 return OP_LXOR;
496 #endif
497 case OP_IAND_IMM:
498 return OP_IAND;
499 case OP_LAND_IMM:
500 return OP_LAND;
501 case OP_IOR_IMM:
502 return OP_IOR;
503 case OP_LOR_IMM:
504 return OP_LOR;
505 case OP_IXOR_IMM:
506 return OP_IXOR;
507 case OP_LXOR_IMM:
508 return OP_LXOR;
509 case OP_ISHL_IMM:
510 return OP_ISHL;
511 case OP_LSHL_IMM:
512 return OP_LSHL;
513 case OP_ISHR_IMM:
514 return OP_ISHR;
515 case OP_LSHR_IMM:
516 return OP_LSHR;
517 case OP_ISHR_UN_IMM:
518 return OP_ISHR_UN;
519 case OP_LSHR_UN_IMM:
520 return OP_LSHR_UN;
521 case OP_IDIV_IMM:
522 return OP_IDIV;
523 case OP_LDIV_IMM:
524 return OP_LDIV;
525 case OP_IDIV_UN_IMM:
526 return OP_IDIV_UN;
527 case OP_LDIV_UN_IMM:
528 return OP_LDIV_UN;
529 case OP_IREM_UN_IMM:
530 return OP_IREM_UN;
531 case OP_LREM_UN_IMM:
532 return OP_LREM_UN;
533 case OP_IREM_IMM:
534 return OP_IREM;
535 case OP_LREM_IMM:
536 return OP_LREM;
537 case OP_DIV_IMM:
538 #if SIZEOF_REGISTER == 4
539 return OP_IDIV;
540 #else
541 return OP_LDIV;
542 #endif
543 case OP_REM_IMM:
544 #if SIZEOF_REGISTER == 4
545 return OP_IREM;
546 #else
547 return OP_LREM;
548 #endif
549 case OP_ADDCC_IMM:
550 return OP_ADDCC;
551 case OP_ADC_IMM:
552 return OP_ADC;
553 case OP_SUBCC_IMM:
554 return OP_SUBCC;
555 case OP_SBB_IMM:
556 return OP_SBB;
557 case OP_IADC_IMM:
558 return OP_IADC;
559 case OP_ISBB_IMM:
560 return OP_ISBB;
561 case OP_COMPARE_IMM:
562 return OP_COMPARE;
563 case OP_ICOMPARE_IMM:
564 return OP_ICOMPARE;
565 case OP_LOCALLOC_IMM:
566 return OP_LOCALLOC;
567 }
568
569 return -1;
570 }
571
572 /*
573 * mono_decompose_op_imm:
574 *
575 * Replace the OP_.._IMM INS with its non IMM variant.
576 */
577 void
578 mono_decompose_op_imm (MonoCompile *cfg, MonoBasicBlock *bb, MonoInst *ins)
579 {
580 int opcode2 = mono_op_imm_to_op (ins->opcode);
581 MonoInst *temp;
582 guint32 dreg;
583 const char *spec = INS_INFO (ins->opcode);
584
585 if (spec [MONO_INST_SRC2] == 'l') {
586 dreg = mono_alloc_lreg (cfg);
587
588 /* Load the 64bit constant using decomposed ops */
589 MONO_INST_NEW (cfg, temp, OP_ICONST);
590 temp->inst_c0 = ins_get_l_low (ins);
591 temp->dreg = MONO_LVREG_LS (dreg);
592 mono_bblock_insert_before_ins (bb, ins, temp);
593
594 MONO_INST_NEW (cfg, temp, OP_ICONST);
595 temp->inst_c0 = ins_get_l_high (ins);
596 temp->dreg = MONO_LVREG_MS (dreg);
597 } else {
598 dreg = mono_alloc_ireg (cfg);
599
600 MONO_INST_NEW (cfg, temp, OP_ICONST);
601 temp->inst_c0 = ins->inst_imm;
602 temp->dreg = dreg;
603 }
604
605 mono_bblock_insert_before_ins (bb, ins, temp);
606
607 if (opcode2 == -1)
608 g_error ("mono_op_imm_to_op failed for %s\n", mono_inst_name (ins->opcode));
609 ins->opcode = opcode2;
610
611 if (ins->opcode == OP_LOCALLOC)
612 ins->sreg1 = dreg;
613 else
614 ins->sreg2 = dreg;
615
616 bb->max_vreg = MAX (bb->max_vreg, cfg->next_vreg);
617 }
618
619 static void
620 set_vreg_to_inst (MonoCompile *cfg, int vreg, MonoInst *inst)
621 {
622 if (vreg >= cfg->vreg_to_inst_len) {
623 MonoInst **tmp = cfg->vreg_to_inst;
624 int size = cfg->vreg_to_inst_len;
625
626 while (vreg >= cfg->vreg_to_inst_len)
627 cfg->vreg_to_inst_len = cfg->vreg_to_inst_len ? cfg->vreg_to_inst_len * 2 : 32;
628 cfg->vreg_to_inst = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * cfg->vreg_to_inst_len);
629 if (size)
630 memcpy (cfg->vreg_to_inst, tmp, size * sizeof (MonoInst*));
631 }
632 cfg->vreg_to_inst [vreg] = inst;
633 }
634
635 #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)))
636 #define mono_type_is_float(type) (!(type)->byref && (((type)->type == MONO_TYPE_R8) || ((type)->type == MONO_TYPE_R4)))
637
638 MonoInst*
639 mono_compile_create_var_for_vreg (MonoCompile *cfg, MonoType *type, int opcode, int vreg)
640 {
641 MonoInst *inst;
642 int num = cfg->num_varinfo;
643 gboolean regpair;
644
645 type = mini_get_underlying_type (type);
646
647 if ((num + 1) >= cfg->varinfo_count) {
648 int orig_count = cfg->varinfo_count;
649 cfg->varinfo_count = cfg->varinfo_count ? (cfg->varinfo_count * 2) : 32;
650 cfg->varinfo = (MonoInst **)g_realloc (cfg->varinfo, sizeof (MonoInst*) * cfg->varinfo_count);
651 cfg->vars = (MonoMethodVar *)g_realloc (cfg->vars, sizeof (MonoMethodVar) * cfg->varinfo_count);
652 memset (&cfg->vars [orig_count], 0, (cfg->varinfo_count - orig_count) * sizeof (MonoMethodVar));
653 }
654
655 cfg->stat_allocate_var++;
656
657 MONO_INST_NEW (cfg, inst, opcode);
658 inst->inst_c0 = num;
659 inst->inst_vtype = type;
660 inst->klass = mono_class_from_mono_type_internal (type);
661 mini_type_to_eval_stack_type (cfg, type, inst);
662 /* if set to 1 the variable is native */
663 inst->backend.is_pinvoke = 0;
664 inst->dreg = vreg;
665
666 if (mono_class_has_failure (inst->klass))
667 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
668
669 if (cfg->compute_gc_maps) {
670 if (type->byref) {
671 mono_mark_vreg_as_mp (cfg, vreg);
672 } else {
673 if ((MONO_TYPE_ISSTRUCT (type) && m_class_has_references (inst->klass)) || mini_type_is_reference (type)) {
674 inst->flags |= MONO_INST_GC_TRACK;
675 mono_mark_vreg_as_ref (cfg, vreg);
676 }
677 }
678 }
679
680 cfg->varinfo [num] = inst;
681
682 cfg->vars [num].idx = num;
683 cfg->vars [num].vreg = vreg;
684 cfg->vars [num].range.first_use.pos.bid = 0xffff;
685 cfg->vars [num].reg = -1;
686
687 if (vreg != -1)
688 set_vreg_to_inst (cfg, vreg, inst);
689
690 #if SIZEOF_REGISTER == 4
691 if (mono_arch_is_soft_float ()) {
692 regpair = mono_type_is_long (type) || mono_type_is_float (type);
693 } else {
694 regpair = mono_type_is_long (type);
695 }
696 #else
697 regpair = FALSE;
698 #endif
699
700 if (regpair) {
701 MonoInst *tree;
702
703 /*
704 * These two cannot be allocated using create_var_for_vreg since that would
705 * put it into the cfg->varinfo array, confusing many parts of the JIT.
706 */
707
708 /*
709 * Set flags to VOLATILE so SSA skips it.
710 */
711
712 if (cfg->verbose_level >= 4) {
713 printf (" Create LVAR R%d (R%d, R%d)\n", inst->dreg, MONO_LVREG_LS (inst->dreg), MONO_LVREG_MS (inst->dreg));
714 }
715
716 if (mono_arch_is_soft_float () && cfg->opt & MONO_OPT_SSA) {
717 if (mono_type_is_float (type))
718 inst->flags = MONO_INST_VOLATILE;
719 }
720
721 /* Allocate a dummy MonoInst for the first vreg */
722 MONO_INST_NEW (cfg, tree, OP_LOCAL);
723 tree->dreg = MONO_LVREG_LS (inst->dreg);
724 if (cfg->opt & MONO_OPT_SSA)
725 tree->flags = MONO_INST_VOLATILE;
726 tree->inst_c0 = num;
727 tree->type = STACK_I4;
728 tree->inst_vtype = mono_get_int32_type ();
729 tree->klass = mono_class_from_mono_type_internal (tree->inst_vtype);
730
731 set_vreg_to_inst (cfg, MONO_LVREG_LS (inst->dreg), tree);
732
733 /* Allocate a dummy MonoInst for the second vreg */
734 MONO_INST_NEW (cfg, tree, OP_LOCAL);
735 tree->dreg = MONO_LVREG_MS (inst->dreg);
736 if (cfg->opt & MONO_OPT_SSA)
737 tree->flags = MONO_INST_VOLATILE;
738 tree->inst_c0 = num;
739 tree->type = STACK_I4;
740 tree->inst_vtype = mono_get_int32_type ();
741 tree->klass = mono_class_from_mono_type_internal (tree->inst_vtype);
742
743 set_vreg_to_inst (cfg, MONO_LVREG_MS (inst->dreg), tree);
744 }
745
746 cfg->num_varinfo++;
747 if (cfg->verbose_level > 2)
748 g_print ("created temp %d (R%d) of type %s\n", num, vreg, mono_type_get_name (type));
749
750 return inst;
751 }
752
753 MonoInst*
754 mono_compile_create_var (MonoCompile *cfg, MonoType *type, int opcode)
755 {
756 int dreg;
757
758 #ifdef ENABLE_NETCORE
759 if (type->type == MONO_TYPE_VALUETYPE && !type->byref) {
760 MonoClass *klass = mono_class_from_mono_type_internal (type);
761 if (m_class_is_enumtype (klass) && m_class_get_image (klass) == mono_get_corlib () && !strcmp (m_class_get_name (klass), "StackCrawlMark")) {
762 if (!(cfg->method->flags & METHOD_ATTRIBUTE_REQSECOBJ))
763 g_error ("Method '%s' which contains a StackCrawlMark local variable must be decorated with [System.Security.DynamicSecurityMethod].", mono_method_get_full_name (cfg->method));
764 }
765 }
766 #endif
767
768 type = mini_get_underlying_type (type);
769
770 if (mono_type_is_long (type))
771 dreg = mono_alloc_dreg (cfg, STACK_I8);
772 else if (mono_arch_is_soft_float () && mono_type_is_float (type))
773 dreg = mono_alloc_dreg (cfg, STACK_R8);
774 else
775 /* All the others are unified */
776 dreg = mono_alloc_preg (cfg);
777
778 return mono_compile_create_var_for_vreg (cfg, type, opcode, dreg);
779 }
780
781 MonoInst*
782 mini_get_int_to_float_spill_area (MonoCompile *cfg)
783 {
784 #ifdef TARGET_X86
785 if (!cfg->iconv_raw_var) {
786 cfg->iconv_raw_var = mono_compile_create_var (cfg, mono_get_int32_type (), OP_LOCAL);
787 cfg->iconv_raw_var->flags |= MONO_INST_VOLATILE; /*FIXME, use the don't regalloc flag*/
788 }
789 return cfg->iconv_raw_var;
790 #else
791 return NULL;
792 #endif
793 }
794
795 void
796 mono_mark_vreg_as_ref (MonoCompile *cfg, int vreg)
797 {
798 if (vreg >= cfg->vreg_is_ref_len) {
799 gboolean *tmp = cfg->vreg_is_ref;
800 int size = cfg->vreg_is_ref_len;
801
802 while (vreg >= cfg->vreg_is_ref_len)
803 cfg->vreg_is_ref_len = cfg->vreg_is_ref_len ? cfg->vreg_is_ref_len * 2 : 32;
804 cfg->vreg_is_ref = (gboolean *)mono_mempool_alloc0 (cfg->mempool, sizeof (gboolean) * cfg->vreg_is_ref_len);
805 if (size)
806 memcpy (cfg->vreg_is_ref, tmp, size * sizeof (gboolean));
807 }
808 cfg->vreg_is_ref [vreg] = TRUE;
809 }
810
811 void
812 mono_mark_vreg_as_mp (MonoCompile *cfg, int vreg)
813 {
814 if (vreg >= cfg->vreg_is_mp_len) {
815 gboolean *tmp = cfg->vreg_is_mp;
816 int size = cfg->vreg_is_mp_len;
817
818 while (vreg >= cfg->vreg_is_mp_len)
819 cfg->vreg_is_mp_len = cfg->vreg_is_mp_len ? cfg->vreg_is_mp_len * 2 : 32;
820 cfg->vreg_is_mp = (gboolean *)mono_mempool_alloc0 (cfg->mempool, sizeof (gboolean) * cfg->vreg_is_mp_len);
821 if (size)
822 memcpy (cfg->vreg_is_mp, tmp, size * sizeof (gboolean));
823 }
824 cfg->vreg_is_mp [vreg] = TRUE;
825 }
826
827 static MonoType*
828 type_from_stack_type (MonoInst *ins)
829 {
830 switch (ins->type) {
831 case STACK_I4: return mono_get_int32_type ();
832 case STACK_I8: return m_class_get_byval_arg (mono_defaults.int64_class);
833 case STACK_PTR: return mono_get_int_type ();
834 case STACK_R8: return m_class_get_byval_arg (mono_defaults.double_class);
835 case STACK_MP:
836 /*
837 * this if used to be commented without any specific reason, but
838 * it breaks #80235 when commented
839 */
840 if (ins->klass)
841 return m_class_get_this_arg (ins->klass);
842 else
843 return m_class_get_this_arg (mono_defaults.object_class);
844 case STACK_OBJ:
845 /* ins->klass may not be set for ldnull.
846 * Also, if we have a boxed valuetype, we want an object lass,
847 * not the valuetype class
848 */
849 if (ins->klass && !m_class_is_valuetype (ins->klass))
850 return m_class_get_byval_arg (ins->klass);
851 return mono_get_object_type ();
852 case STACK_VTYPE: return m_class_get_byval_arg (ins->klass);
853 default:
854 g_error ("stack type %d to montype not handled\n", ins->type);
855 }
856 return NULL;
857 }
858
859 MonoType*
860 mono_type_from_stack_type (MonoInst *ins)
861 {
862 return type_from_stack_type (ins);
863 }
864
865 /*
866 * mono_add_ins_to_end:
867 *
868 * Same as MONO_ADD_INS, but add INST before any branches at the end of BB.
869 */
870 void
871 mono_add_ins_to_end (MonoBasicBlock *bb, MonoInst *inst)
872 {
873 int opcode;
874
875 if (!bb->code) {
876 MONO_ADD_INS (bb, inst);
877 return;
878 }
879
880 switch (bb->last_ins->opcode) {
881 case OP_BR:
882 case OP_BR_REG:
883 case CEE_BEQ:
884 case CEE_BGE:
885 case CEE_BGT:
886 case CEE_BLE:
887 case CEE_BLT:
888 case CEE_BNE_UN:
889 case CEE_BGE_UN:
890 case CEE_BGT_UN:
891 case CEE_BLE_UN:
892 case CEE_BLT_UN:
893 case OP_SWITCH:
894 mono_bblock_insert_before_ins (bb, bb->last_ins, inst);
895 break;
896 default:
897 if (MONO_IS_COND_BRANCH_OP (bb->last_ins)) {
898 /* Need to insert the ins before the compare */
899 if (bb->code == bb->last_ins) {
900 mono_bblock_insert_before_ins (bb, bb->last_ins, inst);
901 return;
902 }
903
904 if (bb->code->next == bb->last_ins) {
905 /* Only two instructions */
906 opcode = bb->code->opcode;
907
908 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)) {
909 /* NEW IR */
910 mono_bblock_insert_before_ins (bb, bb->code, inst);
911 } else {
912 mono_bblock_insert_before_ins (bb, bb->last_ins, inst);
913 }
914 } else {
915 opcode = bb->last_ins->prev->opcode;
916
917 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)) {
918 /* NEW IR */
919 mono_bblock_insert_before_ins (bb, bb->last_ins->prev, inst);
920 } else {
921 mono_bblock_insert_before_ins (bb, bb->last_ins, inst);
922 }
923 }
924 }
925 else
926 MONO_ADD_INS (bb, inst);
927 break;
928 }
929 }
930
931 void
932 mono_create_jump_table (MonoCompile *cfg, MonoInst *label, MonoBasicBlock **bbs, int num_blocks)
933 {
934 MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfo));
935 MonoJumpInfoBBTable *table;
936
937 table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
938 table->table = bbs;
939 table->table_size = num_blocks;
940
941 ji->ip.label = label;
942 ji->type = MONO_PATCH_INFO_SWITCH;
943 ji->data.table = table;
944 ji->next = cfg->patch_info;
945 cfg->patch_info = ji;
946 }
947
948 gboolean
949 mini_assembly_can_skip_verification (MonoDomain *domain, MonoMethod *method)
950 {
951 MonoAssembly *assembly = m_class_get_image (method->klass)->assembly;
952 if (method->wrapper_type != MONO_WRAPPER_NONE && method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
953 return FALSE;
954 if (assembly->in_gac || assembly->image == mono_defaults.corlib)
955 return FALSE;
956 return mono_assembly_has_skip_verification (assembly);
957 }
958
959 /*
960 * mini_method_verify:
961 *
962 * Verify the method using the verfier.
963 *
964 * Returns true if the method is invalid.
965 */
966 static gboolean
967 mini_method_verify (MonoCompile *cfg, MonoMethod *method, gboolean fail_compile)
968 {
969 GSList *tmp, *res;
970 gboolean is_fulltrust;
971
972 if (method->verification_success)
973 return FALSE;
974
975 if (!mono_verifier_is_enabled_for_method (method))
976 return FALSE;
977
978 /*skip verification implies the assembly must be */
979 is_fulltrust = mono_verifier_is_method_full_trust (method) || mini_assembly_can_skip_verification (cfg->domain, method);
980
981 res = mono_method_verify_with_current_settings (method, cfg->skip_visibility, is_fulltrust);
982
983 if (res) {
984 for (tmp = res; tmp; tmp = tmp->next) {
985 MonoVerifyInfoExtended *info = (MonoVerifyInfoExtended *)tmp->data;
986 if (info->info.status == MONO_VERIFY_ERROR) {
987 if (fail_compile) {
988 char *method_name = mono_method_full_name (method, TRUE);
989 cfg->exception_type = (MonoExceptionType)info->exception_type;
990 cfg->exception_message = g_strdup_printf ("Error verifying %s: %s", method_name, info->info.message);
991 g_free (method_name);
992 }
993 mono_free_verify_list (res);
994 return TRUE;
995 }
996 if (info->info.status == MONO_VERIFY_NOT_VERIFIABLE && (!is_fulltrust || info->exception_type == MONO_EXCEPTION_METHOD_ACCESS || info->exception_type == MONO_EXCEPTION_FIELD_ACCESS)) {
997 if (fail_compile) {
998 char *method_name = mono_method_full_name (method, TRUE);
999 char *msg = g_strdup_printf ("Error verifying %s: %s", method_name, info->info.message);
1000
1001 if (info->exception_type == MONO_EXCEPTION_METHOD_ACCESS)
1002 mono_error_set_generic_error (&cfg->error, "System", "MethodAccessException", "%s", msg);
1003 else if (info->exception_type == MONO_EXCEPTION_FIELD_ACCESS)
1004 mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "%s", msg);
1005 else if (info->exception_type == MONO_EXCEPTION_UNVERIFIABLE_IL)
1006 mono_error_set_generic_error (&cfg->error, "System.Security", "VerificationException", "%s", msg);
1007 if (!mono_error_ok (&cfg->error)) {
1008 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
1009 g_free (msg);
1010 } else {
1011 cfg->exception_type = (MonoExceptionType)info->exception_type;
1012 cfg->exception_message = msg;
1013 }
1014 g_free (method_name);
1015 }
1016 mono_free_verify_list (res);
1017 return TRUE;
1018 }
1019 }
1020 mono_free_verify_list (res);
1021 }
1022 method->verification_success = 1;
1023 return FALSE;
1024 }
1025
1026 /*Returns true if something went wrong*/
1027 gboolean
1028 mono_compile_is_broken (MonoCompile *cfg, MonoMethod *method, gboolean fail_compile)
1029 {
1030 MonoMethod *method_definition = method;
1031 gboolean dont_verify = m_class_get_image (method->klass)->assembly->corlib_internal;
1032
1033 while (method_definition->is_inflated) {
1034 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
1035 method_definition = imethod->declaring;
1036 }
1037
1038 return !dont_verify && mini_method_verify (cfg, method_definition, fail_compile);
1039 }
1040
1041 static void
1042 mono_dynamic_code_hash_insert (MonoDomain *domain, MonoMethod *method, MonoJitDynamicMethodInfo *ji)
1043 {
1044 if (!domain_jit_info (domain)->dynamic_code_hash)
1045 domain_jit_info (domain)->dynamic_code_hash = g_hash_table_new (NULL, NULL);
1046 g_hash_table_insert (domain_jit_info (domain)->dynamic_code_hash, method, ji);
1047 }
1048
1049 static MonoJitDynamicMethodInfo*
1050 mono_dynamic_code_hash_lookup (MonoDomain *domain, MonoMethod *method)
1051 {
1052 MonoJitDynamicMethodInfo *res;
1053
1054 if (domain_jit_info (domain)->dynamic_code_hash)
1055 res = (MonoJitDynamicMethodInfo *)g_hash_table_lookup (domain_jit_info (domain)->dynamic_code_hash, method);
1056 else
1057 res = NULL;
1058 return res;
1059 }
1060
1061 typedef struct {
1062 MonoClass *vtype;
1063 GList *active, *inactive;
1064 GSList *slots;
1065 } StackSlotInfo;
1066
1067 static gint
1068 compare_by_interval_start_pos_func (gconstpointer a, gconstpointer b)
1069 {
1070 MonoMethodVar *v1 = (MonoMethodVar*)a;
1071 MonoMethodVar *v2 = (MonoMethodVar*)b;
1072
1073 if (v1 == v2)
1074 return 0;
1075 else if (v1->interval->range && v2->interval->range)
1076 return v1->interval->range->from - v2->interval->range->from;
1077 else if (v1->interval->range)
1078 return -1;
1079 else
1080 return 1;
1081 }
1082
1083 #if 0
1084 #define LSCAN_DEBUG(a) do { a; } while (0)
1085 #else
1086 #define LSCAN_DEBUG(a)
1087 #endif
1088
1089 static gint32*
1090 mono_allocate_stack_slots2 (MonoCompile *cfg, gboolean backward, guint32 *stack_size, guint32 *stack_align)
1091 {
1092 int i, slot, offset, size;
1093 guint32 align;
1094 MonoMethodVar *vmv;
1095 MonoInst *inst;
1096 gint32 *offsets;
1097 GList *vars = NULL, *l, *unhandled;
1098 StackSlotInfo *scalar_stack_slots, *vtype_stack_slots, *slot_info;
1099 MonoType *t;
1100 int nvtypes;
1101 int vtype_stack_slots_size = 256;
1102 gboolean reuse_slot;
1103
1104 LSCAN_DEBUG (printf ("Allocate Stack Slots 2 for %s:\n", mono_method_full_name (cfg->method, TRUE)));
1105
1106 scalar_stack_slots = (StackSlotInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (StackSlotInfo) * MONO_TYPE_PINNED);
1107 vtype_stack_slots = NULL;
1108 nvtypes = 0;
1109
1110 offsets = (gint32 *)mono_mempool_alloc (cfg->mempool, sizeof (gint32) * cfg->num_varinfo);
1111 for (i = 0; i < cfg->num_varinfo; ++i)
1112 offsets [i] = -1;
1113
1114 for (i = cfg->locals_start; i < cfg->num_varinfo; i++) {
1115 inst = cfg->varinfo [i];
1116 vmv = MONO_VARINFO (cfg, i);
1117
1118 if ((inst->flags & MONO_INST_IS_DEAD) || inst->opcode == OP_REGVAR || inst->opcode == OP_REGOFFSET)
1119 continue;
1120
1121 vars = g_list_prepend (vars, vmv);
1122 }
1123
1124 vars = g_list_sort (vars, compare_by_interval_start_pos_func);
1125
1126 /* Sanity check */
1127 /*
1128 i = 0;
1129 for (unhandled = vars; unhandled; unhandled = unhandled->next) {
1130 MonoMethodVar *current = unhandled->data;
1131
1132 if (current->interval->range) {
1133 g_assert (current->interval->range->from >= i);
1134 i = current->interval->range->from;
1135 }
1136 }
1137 */
1138
1139 offset = 0;
1140 *stack_align = 0;
1141 for (unhandled = vars; unhandled; unhandled = unhandled->next) {
1142 MonoMethodVar *current = (MonoMethodVar *)unhandled->data;
1143
1144 vmv = current;
1145 inst = cfg->varinfo [vmv->idx];
1146
1147 t = mono_type_get_underlying_type (inst->inst_vtype);
1148 if (cfg->gsharedvt && mini_is_gsharedvt_variable_type (t))
1149 continue;
1150
1151 /* inst->backend.is_pinvoke indicates native sized value types, this is used by the
1152 * pinvoke wrappers when they call functions returning structures */
1153 if (inst->backend.is_pinvoke && MONO_TYPE_ISSTRUCT (t) && t->type != MONO_TYPE_TYPEDBYREF) {
1154 size = mono_class_native_size (mono_class_from_mono_type_internal (t), &align);
1155 }
1156 else {
1157 int ialign;
1158
1159 size = mini_type_stack_size (t, &ialign);
1160 align = ialign;
1161
1162 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type_internal (t)))
1163 align = 16;
1164 }
1165
1166 reuse_slot = TRUE;
1167 if (cfg->disable_reuse_stack_slots)
1168 reuse_slot = FALSE;
1169
1170 t = mini_get_underlying_type (t);
1171 switch (t->type) {
1172 case MONO_TYPE_GENERICINST:
1173 if (!mono_type_generic_inst_is_valuetype (t)) {
1174 slot_info = &scalar_stack_slots [t->type];
1175 break;
1176 }
1177 /* Fall through */
1178 case MONO_TYPE_VALUETYPE:
1179 if (!vtype_stack_slots)
1180 vtype_stack_slots = (StackSlotInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (StackSlotInfo) * vtype_stack_slots_size);
1181 for (i = 0; i < nvtypes; ++i)
1182 if (t->data.klass == vtype_stack_slots [i].vtype)
1183 break;
1184 if (i < nvtypes)
1185 slot_info = &vtype_stack_slots [i];
1186 else {
1187 if (nvtypes == vtype_stack_slots_size) {
1188 int new_slots_size = vtype_stack_slots_size * 2;
1189 StackSlotInfo* new_slots = (StackSlotInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (StackSlotInfo) * new_slots_size);
1190
1191 memcpy (new_slots, vtype_stack_slots, sizeof (StackSlotInfo) * vtype_stack_slots_size);
1192
1193 vtype_stack_slots = new_slots;
1194 vtype_stack_slots_size = new_slots_size;
1195 }
1196 vtype_stack_slots [nvtypes].vtype = t->data.klass;
1197 slot_info = &vtype_stack_slots [nvtypes];
1198 nvtypes ++;
1199 }
1200 if (cfg->disable_reuse_ref_stack_slots)
1201 reuse_slot = FALSE;
1202 break;
1203
1204 case MONO_TYPE_PTR:
1205 case MONO_TYPE_I:
1206 case MONO_TYPE_U:
1207 #if TARGET_SIZEOF_VOID_P == 4
1208 case MONO_TYPE_I4:
1209 #else
1210 case MONO_TYPE_I8:
1211 #endif
1212 if (cfg->disable_ref_noref_stack_slot_share) {
1213 slot_info = &scalar_stack_slots [MONO_TYPE_I];
1214 break;
1215 }
1216 /* Fall through */
1217
1218 case MONO_TYPE_CLASS:
1219 case MONO_TYPE_OBJECT:
1220 case MONO_TYPE_ARRAY:
1221 case MONO_TYPE_SZARRAY:
1222 case MONO_TYPE_STRING:
1223 /* Share non-float stack slots of the same size */
1224 slot_info = &scalar_stack_slots [MONO_TYPE_CLASS];
1225 if (cfg->disable_reuse_ref_stack_slots)
1226 reuse_slot = FALSE;
1227 break;
1228
1229 default:
1230 slot_info = &scalar_stack_slots [t->type];
1231 }
1232
1233 slot = 0xffffff;
1234 if (cfg->comp_done & MONO_COMP_LIVENESS) {
1235 int pos;
1236 gboolean changed;
1237
1238 //printf ("START %2d %08x %08x\n", vmv->idx, vmv->range.first_use.abs_pos, vmv->range.last_use.abs_pos);
1239
1240 if (!current->interval->range) {
1241 if (inst->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT))
1242 pos = ~0;
1243 else {
1244 /* Dead */
1245 inst->flags |= MONO_INST_IS_DEAD;
1246 continue;
1247 }
1248 }
1249 else
1250 pos = current->interval->range->from;
1251
1252 LSCAN_DEBUG (printf ("process R%d ", inst->dreg));
1253 if (current->interval->range)
1254 LSCAN_DEBUG (mono_linterval_print (current->interval));
1255 LSCAN_DEBUG (printf ("\n"));
1256
1257 /* Check for intervals in active which expired or inactive */
1258 changed = TRUE;
1259 /* FIXME: Optimize this */
1260 while (changed) {
1261 changed = FALSE;
1262 for (l = slot_info->active; l != NULL; l = l->next) {
1263 MonoMethodVar *v = (MonoMethodVar*)l->data;
1264
1265 if (v->interval->last_range->to < pos) {
1266 slot_info->active = g_list_delete_link (slot_info->active, l);
1267 slot_info->slots = g_slist_prepend_mempool (cfg->mempool, slot_info->slots, GINT_TO_POINTER (offsets [v->idx]));
1268 LSCAN_DEBUG (printf ("Interval R%d has expired, adding 0x%x to slots\n", cfg->varinfo [v->idx]->dreg, offsets [v->idx]));
1269 changed = TRUE;
1270 break;
1271 }
1272 else if (!mono_linterval_covers (v->interval, pos)) {
1273 slot_info->inactive = g_list_append (slot_info->inactive, v);
1274 slot_info->active = g_list_delete_link (slot_info->active, l);
1275 LSCAN_DEBUG (printf ("Interval R%d became inactive\n", cfg->varinfo [v->idx]->dreg));
1276 changed = TRUE;
1277 break;
1278 }
1279 }
1280 }
1281
1282 /* Check for intervals in inactive which expired or active */
1283 changed = TRUE;
1284 /* FIXME: Optimize this */
1285 while (changed) {
1286 changed = FALSE;
1287 for (l = slot_info->inactive; l != NULL; l = l->next) {
1288 MonoMethodVar *v = (MonoMethodVar*)l->data;
1289
1290 if (v->interval->last_range->to < pos) {
1291 slot_info->inactive = g_list_delete_link (slot_info->inactive, l);
1292 // FIXME: Enabling this seems to cause impossible to debug crashes
1293 //slot_info->slots = g_slist_prepend_mempool (cfg->mempool, slot_info->slots, GINT_TO_POINTER (offsets [v->idx]));
1294 LSCAN_DEBUG (printf ("Interval R%d has expired, adding 0x%x to slots\n", cfg->varinfo [v->idx]->dreg, offsets [v->idx]));
1295 changed = TRUE;
1296 break;
1297 }
1298 else if (mono_linterval_covers (v->interval, pos)) {
1299 slot_info->active = g_list_append (slot_info->active, v);
1300 slot_info->inactive = g_list_delete_link (slot_info->inactive, l);
1301 LSCAN_DEBUG (printf ("\tInterval R%d became active\n", cfg->varinfo [v->idx]->dreg));
1302 changed = TRUE;
1303 break;
1304 }
1305 }
1306 }
1307
1308 /*
1309 * This also handles the case when the variable is used in an
1310 * exception region, as liveness info is not computed there.
1311 */
1312 /*
1313 * FIXME: All valuetypes are marked as INDIRECT because of LDADDR
1314 * opcodes.
1315 */
1316 if (! (inst->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT))) {
1317 if (slot_info->slots) {
1318 slot = GPOINTER_TO_INT (slot_info->slots->data);
1319
1320 slot_info->slots = slot_info->slots->next;
1321 }
1322
1323 /* FIXME: We might want to consider the inactive intervals as well if slot_info->slots is empty */
1324
1325 slot_info->active = mono_varlist_insert_sorted (cfg, slot_info->active, vmv, TRUE);
1326 }
1327 }
1328
1329 #if 0
1330 {
1331 static int count = 0;
1332 count ++;
1333
1334 if (count == atoi (g_getenv ("COUNT3")))
1335 printf ("LAST: %s\n", mono_method_full_name (cfg->method, TRUE));
1336 if (count > atoi (g_getenv ("COUNT3")))
1337 slot = 0xffffff;
1338 else
1339 mono_print_ins (inst);
1340 }
1341 #endif
1342
1343 LSCAN_DEBUG (printf ("R%d %s -> 0x%x\n", inst->dreg, mono_type_full_name (t), slot));
1344
1345 if (inst->flags & MONO_INST_LMF) {
1346 size = MONO_ABI_SIZEOF (MonoLMF);
1347 align = sizeof (target_mgreg_t);
1348 reuse_slot = FALSE;
1349 }
1350
1351 if (!reuse_slot)
1352 slot = 0xffffff;
1353
1354 if (slot == 0xffffff) {
1355 /*
1356 * Allways allocate valuetypes to sizeof (target_mgreg_t) to allow more
1357 * efficient copying (and to work around the fact that OP_MEMCPY
1358 * and OP_MEMSET ignores alignment).
1359 */
1360 if (MONO_TYPE_ISSTRUCT (t)) {
1361 align = MAX (align, sizeof (target_mgreg_t));
1362 align = MAX (align, mono_class_min_align (mono_class_from_mono_type_internal (t)));
1363 }
1364
1365 if (backward) {
1366 offset += size;
1367 offset += align - 1;
1368 offset &= ~(align - 1);
1369 slot = offset;
1370 }
1371 else {
1372 offset += align - 1;
1373 offset &= ~(align - 1);
1374 slot = offset;
1375 offset += size;
1376 }
1377
1378 if (*stack_align == 0)
1379 *stack_align = align;
1380 }
1381
1382 offsets [vmv->idx] = slot;
1383 }
1384 g_list_free (vars);
1385 for (i = 0; i < MONO_TYPE_PINNED; ++i) {
1386 if (scalar_stack_slots [i].active)
1387 g_list_free (scalar_stack_slots [i].active);
1388 }
1389 for (i = 0; i < nvtypes; ++i) {
1390 if (vtype_stack_slots [i].active)
1391 g_list_free (vtype_stack_slots [i].active);
1392 }
1393
1394 cfg->stat_locals_stack_size += offset;
1395
1396 *stack_size = offset;
1397 return offsets;
1398 }
1399
1400 /*
1401 * mono_allocate_stack_slots:
1402 *
1403 * Allocate stack slots for all non register allocated variables using a
1404 * linear scan algorithm.
1405 * Returns: an array of stack offsets.
1406 * STACK_SIZE is set to the amount of stack space needed.
1407 * STACK_ALIGN is set to the alignment needed by the locals area.
1408 */
1409 gint32*
1410 mono_allocate_stack_slots (MonoCompile *cfg, gboolean backward, guint32 *stack_size, guint32 *stack_align)
1411 {
1412 int i, slot, offset, size;
1413 guint32 align;
1414 MonoMethodVar *vmv;
1415 MonoInst *inst;
1416 gint32 *offsets;
1417 GList *vars = NULL, *l;
1418 StackSlotInfo *scalar_stack_slots, *vtype_stack_slots, *slot_info;
1419 MonoType *t;
1420 int nvtypes;
1421 int vtype_stack_slots_size = 256;
1422 gboolean reuse_slot;
1423
1424 if ((cfg->num_varinfo > 0) && MONO_VARINFO (cfg, 0)->interval)
1425 return mono_allocate_stack_slots2 (cfg, backward, stack_size, stack_align);
1426
1427 scalar_stack_slots = (StackSlotInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (StackSlotInfo) * MONO_TYPE_PINNED);
1428 vtype_stack_slots = NULL;
1429 nvtypes = 0;
1430
1431 offsets = (gint32 *)mono_mempool_alloc (cfg->mempool, sizeof (gint32) * cfg->num_varinfo);
1432 for (i = 0; i < cfg->num_varinfo; ++i)
1433 offsets [i] = -1;
1434
1435 for (i = cfg->locals_start; i < cfg->num_varinfo; i++) {
1436 inst = cfg->varinfo [i];
1437 vmv = MONO_VARINFO (cfg, i);
1438
1439 if ((inst->flags & MONO_INST_IS_DEAD) || inst->opcode == OP_REGVAR || inst->opcode == OP_REGOFFSET)
1440 continue;
1441
1442 vars = g_list_prepend (vars, vmv);
1443 }
1444
1445 vars = mono_varlist_sort (cfg, vars, 0);
1446 offset = 0;
1447 *stack_align = sizeof (target_mgreg_t);
1448 for (l = vars; l; l = l->next) {
1449 vmv = (MonoMethodVar *)l->data;
1450 inst = cfg->varinfo [vmv->idx];
1451
1452 t = mono_type_get_underlying_type (inst->inst_vtype);
1453 if (cfg->gsharedvt && mini_is_gsharedvt_variable_type (t))
1454 continue;
1455
1456 /* inst->backend.is_pinvoke indicates native sized value types, this is used by the
1457 * pinvoke wrappers when they call functions returning structures */
1458 if (inst->backend.is_pinvoke && MONO_TYPE_ISSTRUCT (t) && t->type != MONO_TYPE_TYPEDBYREF) {
1459 size = mono_class_native_size (mono_class_from_mono_type_internal (t), &align);
1460 } else {
1461 int ialign;
1462
1463 size = mini_type_stack_size (t, &ialign);
1464 align = ialign;
1465
1466 if (mono_class_has_failure (mono_class_from_mono_type_internal (t)))
1467 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
1468
1469 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type_internal (t)))
1470 align = 16;
1471 }
1472
1473 reuse_slot = TRUE;
1474 if (cfg->disable_reuse_stack_slots)
1475 reuse_slot = FALSE;
1476
1477 t = mini_get_underlying_type (t);
1478 switch (t->type) {
1479 case MONO_TYPE_GENERICINST:
1480 if (!mono_type_generic_inst_is_valuetype (t)) {
1481 slot_info = &scalar_stack_slots [t->type];
1482 break;
1483 }
1484 /* Fall through */
1485 case MONO_TYPE_VALUETYPE:
1486 if (!vtype_stack_slots)
1487 vtype_stack_slots = (StackSlotInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (StackSlotInfo) * vtype_stack_slots_size);
1488 for (i = 0; i < nvtypes; ++i)
1489 if (t->data.klass == vtype_stack_slots [i].vtype)
1490 break;
1491 if (i < nvtypes)
1492 slot_info = &vtype_stack_slots [i];
1493 else {
1494 if (nvtypes == vtype_stack_slots_size) {
1495 int new_slots_size = vtype_stack_slots_size * 2;
1496 StackSlotInfo* new_slots = (StackSlotInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (StackSlotInfo) * new_slots_size);
1497
1498 memcpy (new_slots, vtype_stack_slots, sizeof (StackSlotInfo) * vtype_stack_slots_size);
1499
1500 vtype_stack_slots = new_slots;
1501 vtype_stack_slots_size = new_slots_size;
1502 }
1503 vtype_stack_slots [nvtypes].vtype = t->data.klass;
1504 slot_info = &vtype_stack_slots [nvtypes];
1505 nvtypes ++;
1506 }
1507 if (cfg->disable_reuse_ref_stack_slots)
1508 reuse_slot = FALSE;
1509 break;
1510
1511 case MONO_TYPE_PTR:
1512 case MONO_TYPE_I:
1513 case MONO_TYPE_U:
1514 #if TARGET_SIZEOF_VOID_P == 4
1515 case MONO_TYPE_I4:
1516 #else
1517 case MONO_TYPE_I8:
1518 #endif
1519 if (cfg->disable_ref_noref_stack_slot_share) {
1520 slot_info = &scalar_stack_slots [MONO_TYPE_I];
1521 break;
1522 }
1523 /* Fall through */
1524
1525 case MONO_TYPE_CLASS:
1526 case MONO_TYPE_OBJECT:
1527 case MONO_TYPE_ARRAY:
1528 case MONO_TYPE_SZARRAY:
1529 case MONO_TYPE_STRING:
1530 /* Share non-float stack slots of the same size */
1531 slot_info = &scalar_stack_slots [MONO_TYPE_CLASS];
1532 if (cfg->disable_reuse_ref_stack_slots)
1533 reuse_slot = FALSE;
1534 break;
1535 case MONO_TYPE_VAR:
1536 case MONO_TYPE_MVAR:
1537 slot_info = &scalar_stack_slots [t->type];
1538 break;
1539 default:
1540 slot_info = &scalar_stack_slots [t->type];
1541 break;
1542 }
1543
1544 slot = 0xffffff;
1545 if (cfg->comp_done & MONO_COMP_LIVENESS) {
1546 //printf ("START %2d %08x %08x\n", vmv->idx, vmv->range.first_use.abs_pos, vmv->range.last_use.abs_pos);
1547
1548 /* expire old intervals in active */
1549 while (slot_info->active) {
1550 MonoMethodVar *amv = (MonoMethodVar *)slot_info->active->data;
1551
1552 if (amv->range.last_use.abs_pos > vmv->range.first_use.abs_pos)
1553 break;
1554
1555 //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);
1556
1557 slot_info->active = g_list_delete_link (slot_info->active, slot_info->active);
1558 slot_info->slots = g_slist_prepend_mempool (cfg->mempool, slot_info->slots, GINT_TO_POINTER (offsets [amv->idx]));
1559 }
1560
1561 /*
1562 * This also handles the case when the variable is used in an
1563 * exception region, as liveness info is not computed there.
1564 */
1565 /*
1566 * FIXME: All valuetypes are marked as INDIRECT because of LDADDR
1567 * opcodes.
1568 */
1569 if (! (inst->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT))) {
1570 if (slot_info->slots) {
1571 slot = GPOINTER_TO_INT (slot_info->slots->data);
1572
1573 slot_info->slots = slot_info->slots->next;
1574 }
1575
1576 slot_info->active = mono_varlist_insert_sorted (cfg, slot_info->active, vmv, TRUE);
1577 }
1578 }
1579
1580 #if 0
1581 {
1582 static int count = 0;
1583 count ++;
1584
1585 if (count == atoi (g_getenv ("COUNT")))
1586 printf ("LAST: %s\n", mono_method_full_name (cfg->method, TRUE));
1587 if (count > atoi (g_getenv ("COUNT")))
1588 slot = 0xffffff;
1589 else
1590 mono_print_ins (inst);
1591 }
1592 #endif
1593
1594 if (inst->flags & MONO_INST_LMF) {
1595 /*
1596 * This variable represents a MonoLMF structure, which has no corresponding
1597 * CLR type, so hard-code its size/alignment.
1598 */
1599 size = MONO_ABI_SIZEOF (MonoLMF);
1600 align = sizeof (target_mgreg_t);
1601 reuse_slot = FALSE;
1602 }
1603
1604 if (!reuse_slot)
1605 slot = 0xffffff;
1606
1607 if (slot == 0xffffff) {
1608 /*
1609 * Allways allocate valuetypes to sizeof (target_mgreg_t) to allow more
1610 * efficient copying (and to work around the fact that OP_MEMCPY
1611 * and OP_MEMSET ignores alignment).
1612 */
1613 if (MONO_TYPE_ISSTRUCT (t)) {
1614 align = MAX (align, sizeof (target_mgreg_t));
1615 align = MAX (align, mono_class_min_align (mono_class_from_mono_type_internal (t)));
1616 /*
1617 * Align the size too so the code generated for passing vtypes in
1618 * registers doesn't overwrite random locals.
1619 */
1620 size = (size + (align - 1)) & ~(align -1);
1621 }
1622
1623 if (backward) {
1624 offset += size;
1625 offset += align - 1;
1626 offset &= ~(align - 1);
1627 slot = offset;
1628 }
1629 else {
1630 offset += align - 1;
1631 offset &= ~(align - 1);
1632 slot = offset;
1633 offset += size;
1634 }
1635
1636 *stack_align = MAX (*stack_align, align);
1637 }
1638
1639 offsets [vmv->idx] = slot;
1640 }
1641 g_list_free (vars);
1642 for (i = 0; i < MONO_TYPE_PINNED; ++i) {
1643 if (scalar_stack_slots [i].active)
1644 g_list_free (scalar_stack_slots [i].active);
1645 }
1646 for (i = 0; i < nvtypes; ++i) {
1647 if (vtype_stack_slots [i].active)
1648 g_list_free (vtype_stack_slots [i].active);
1649 }
1650
1651 cfg->stat_locals_stack_size += offset;
1652
1653 *stack_size = offset;
1654 return offsets;
1655 }
1656
1657 #define EMUL_HIT_SHIFT 3
1658 #define EMUL_HIT_MASK ((1 << EMUL_HIT_SHIFT) - 1)
1659 /* small hit bitmap cache */
1660 static mono_byte emul_opcode_hit_cache [(OP_LAST>>EMUL_HIT_SHIFT) + 1] = {0};
1661 static short emul_opcode_num = 0;
1662 static short emul_opcode_alloced = 0;
1663 static short *emul_opcode_opcodes;
1664 static MonoJitICallInfo **emul_opcode_map;
1665
1666 MonoJitICallInfo *
1667 mono_find_jit_opcode_emulation (int opcode)
1668 {
1669 g_assert (opcode >= 0 && opcode <= OP_LAST);
1670 if (emul_opcode_hit_cache [opcode >> (EMUL_HIT_SHIFT + 3)] & (1 << (opcode & EMUL_HIT_MASK))) {
1671 int i;
1672 for (i = 0; i < emul_opcode_num; ++i) {
1673 if (emul_opcode_opcodes [i] == opcode)
1674 return emul_opcode_map [i];
1675 }
1676 }
1677 return NULL;
1678 }
1679
1680 void
1681 mini_register_opcode_emulation (int opcode, MonoJitICallInfo *info, const char *name, MonoMethodSignature *sig, gpointer func, const char *symbol, gboolean no_wrapper)
1682 {
1683 g_assert (info);
1684 g_assert (!sig->hasthis);
1685 g_assert (sig->param_count < 3);
1686
1687 mono_register_jit_icall_info (info, func, name, sig, no_wrapper, symbol);
1688
1689 if (emul_opcode_num >= emul_opcode_alloced) {
1690 int incr = emul_opcode_alloced? emul_opcode_alloced/2: 16;
1691 emul_opcode_alloced += incr;
1692 emul_opcode_map = (MonoJitICallInfo **)g_realloc (emul_opcode_map, sizeof (emul_opcode_map [0]) * emul_opcode_alloced);
1693 emul_opcode_opcodes = (short *)g_realloc (emul_opcode_opcodes, sizeof (emul_opcode_opcodes [0]) * emul_opcode_alloced);
1694 }
1695 emul_opcode_map [emul_opcode_num] = info;
1696 emul_opcode_opcodes [emul_opcode_num] = opcode;
1697 emul_opcode_num++;
1698 emul_opcode_hit_cache [opcode >> (EMUL_HIT_SHIFT + 3)] |= (1 << (opcode & EMUL_HIT_MASK));
1699 }
1700
1701 static void
1702 print_dfn (MonoCompile *cfg)
1703 {
1704 int i, j;
1705 char *code;
1706 MonoBasicBlock *bb;
1707 MonoInst *c;
1708
1709 {
1710 char *method_name = mono_method_full_name (cfg->method, TRUE);
1711 g_print ("IR code for method %s\n", method_name);
1712 g_free (method_name);
1713 }
1714
1715 for (i = 0; i < cfg->num_bblocks; ++i) {
1716 bb = cfg->bblocks [i];
1717 /*if (bb->cil_code) {
1718 char* code1, *code2;
1719 code1 = mono_disasm_code_one (NULL, cfg->method, bb->cil_code, NULL);
1720 if (bb->last_ins->cil_code)
1721 code2 = mono_disasm_code_one (NULL, cfg->method, bb->last_ins->cil_code, NULL);
1722 else
1723 code2 = g_strdup ("");
1724
1725 code1 [strlen (code1) - 1] = 0;
1726 code = g_strdup_printf ("%s -> %s", code1, code2);
1727 g_free (code1);
1728 g_free (code2);
1729 } else*/
1730 code = g_strdup ("\n");
1731 g_print ("\nBB%d (%d) (len: %d): %s", bb->block_num, i, bb->cil_length, code);
1732 MONO_BB_FOR_EACH_INS (bb, c) {
1733 mono_print_ins_index (-1, c);
1734 }
1735
1736 g_print ("\tprev:");
1737 for (j = 0; j < bb->in_count; ++j) {
1738 g_print (" BB%d", bb->in_bb [j]->block_num);
1739 }
1740 g_print ("\t\tsucc:");
1741 for (j = 0; j < bb->out_count; ++j) {
1742 g_print (" BB%d", bb->out_bb [j]->block_num);
1743 }
1744 g_print ("\n\tidom: BB%d\n", bb->idom? bb->idom->block_num: -1);
1745
1746 if (bb->idom)
1747 g_assert (mono_bitset_test_fast (bb->dominators, bb->idom->dfn));
1748
1749 if (bb->dominators)
1750 mono_blockset_print (cfg, bb->dominators, "\tdominators", bb->idom? bb->idom->dfn: -1);
1751 if (bb->dfrontier)
1752 mono_blockset_print (cfg, bb->dfrontier, "\tdfrontier", -1);
1753 g_free (code);
1754 }
1755
1756 g_print ("\n");
1757 }
1758
1759 void
1760 mono_bblock_add_inst (MonoBasicBlock *bb, MonoInst *inst)
1761 {
1762 MONO_ADD_INS (bb, inst);
1763 }
1764
1765 void
1766 mono_bblock_insert_after_ins (MonoBasicBlock *bb, MonoInst *ins, MonoInst *ins_to_insert)
1767 {
1768 if (ins == NULL) {
1769 ins = bb->code;
1770 bb->code = ins_to_insert;
1771
1772 /* Link with next */
1773 ins_to_insert->next = ins;
1774 if (ins)
1775 ins->prev = ins_to_insert;
1776
1777 if (bb->last_ins == NULL)
1778 bb->last_ins = ins_to_insert;
1779 } else {
1780 /* Link with next */
1781 ins_to_insert->next = ins->next;
1782 if (ins->next)
1783 ins->next->prev = ins_to_insert;
1784
1785 /* Link with previous */
1786 ins->next = ins_to_insert;
1787 ins_to_insert->prev = ins;
1788
1789 if (bb->last_ins == ins)
1790 bb->last_ins = ins_to_insert;
1791 }
1792 }
1793
1794 void
1795 mono_bblock_insert_before_ins (MonoBasicBlock *bb, MonoInst *ins, MonoInst *ins_to_insert)
1796 {
1797 if (ins == NULL) {
1798 ins = bb->code;
1799 if (ins)
1800 ins->prev = ins_to_insert;
1801 bb->code = ins_to_insert;
1802 ins_to_insert->next = ins;
1803 if (bb->last_ins == NULL)
1804 bb->last_ins = ins_to_insert;
1805 } else {
1806 /* Link with previous */
1807 if (ins->prev)
1808 ins->prev->next = ins_to_insert;
1809 ins_to_insert->prev = ins->prev;
1810
1811 /* Link with next */
1812 ins->prev = ins_to_insert;
1813 ins_to_insert->next = ins;
1814
1815 if (bb->code == ins)
1816 bb->code = ins_to_insert;
1817 }
1818 }
1819
1820 /*
1821 * mono_verify_bblock:
1822 *
1823 * Verify that the next and prev pointers are consistent inside the instructions in BB.
1824 */
1825 void
1826 mono_verify_bblock (MonoBasicBlock *bb)
1827 {
1828 MonoInst *ins, *prev;
1829
1830 prev = NULL;
1831 for (ins = bb->code; ins; ins = ins->next) {
1832 g_assert (ins->prev == prev);
1833 prev = ins;
1834 }
1835 if (bb->last_ins)
1836 g_assert (!bb->last_ins->next);
1837 }
1838
1839 /*
1840 * mono_verify_cfg:
1841 *
1842 * Perform consistency checks on the JIT data structures and the IR
1843 */
1844 void
1845 mono_verify_cfg (MonoCompile *cfg)
1846 {
1847 MonoBasicBlock *bb;
1848
1849 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
1850 mono_verify_bblock (bb);
1851 }
1852
1853 // This will free many fields in cfg to save
1854 // memory. Note that this must be safe to call
1855 // multiple times. It must be idempotent.
1856 void
1857 mono_empty_compile (MonoCompile *cfg)
1858 {
1859 mono_free_loop_info (cfg);
1860
1861 // These live in the mempool, and so must be freed
1862 // first
1863 for (GSList *l = cfg->headers_to_free; l; l = l->next) {
1864 mono_metadata_free_mh ((MonoMethodHeader *)l->data);
1865 }
1866 cfg->headers_to_free = NULL;
1867
1868 if (cfg->mempool) {
1869 //mono_mempool_stats (cfg->mempool);
1870 mono_mempool_destroy (cfg->mempool);
1871 cfg->mempool = NULL;
1872 }
1873
1874 g_free (cfg->varinfo);
1875 cfg->varinfo = NULL;
1876
1877 g_free (cfg->vars);
1878 cfg->vars = NULL;
1879
1880 if (cfg->rs) {
1881 mono_regstate_free (cfg->rs);
1882 cfg->rs = NULL;
1883 }
1884 }
1885
1886 void
1887 mono_destroy_compile (MonoCompile *cfg)
1888 {
1889 mono_empty_compile (cfg);
1890
1891 mono_metadata_free_mh (cfg->header);
1892
1893 g_hash_table_destroy (cfg->spvars);
1894 g_hash_table_destroy (cfg->exvars);
1895 g_list_free (cfg->ldstr_list);
1896 g_hash_table_destroy (cfg->token_info_hash);
1897 g_hash_table_destroy (cfg->abs_patches);
1898
1899 mono_debug_free_method (cfg);
1900
1901 g_free (cfg->varinfo);
1902 g_free (cfg->vars);
1903 g_free (cfg->exception_message);
1904 g_free (cfg);
1905 }
1906
1907 void
1908 mono_add_patch_info (MonoCompile *cfg, int ip, MonoJumpInfoType type, gconstpointer target)
1909 {
1910 if (type == MONO_PATCH_INFO_NONE)
1911 return;
1912
1913 MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfo));
1914
1915 ji->ip.i = ip;
1916 ji->type = type;
1917 ji->data.target = target;
1918 ji->next = cfg->patch_info;
1919
1920 cfg->patch_info = ji;
1921 }
1922
1923 void
1924 mono_add_patch_info_rel (MonoCompile *cfg, int ip, MonoJumpInfoType type, gconstpointer target, int relocation)
1925 {
1926 if (type == MONO_PATCH_INFO_NONE)
1927 return;
1928
1929 MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfo));
1930
1931 ji->ip.i = ip;
1932 ji->type = type;
1933 ji->relocation = relocation;
1934 ji->data.target = target;
1935 ji->next = cfg->patch_info;
1936
1937 cfg->patch_info = ji;
1938 }
1939
1940 void
1941 mono_remove_patch_info (MonoCompile *cfg, int ip)
1942 {
1943 MonoJumpInfo **ji = &cfg->patch_info;
1944
1945 while (*ji) {
1946 if ((*ji)->ip.i == ip)
1947 *ji = (*ji)->next;
1948 else
1949 ji = &((*ji)->next);
1950 }
1951 }
1952
1953 void
1954 mono_add_seq_point (MonoCompile *cfg, MonoBasicBlock *bb, MonoInst *ins, int native_offset)
1955 {
1956 ins->inst_offset = native_offset;
1957 g_ptr_array_add (cfg->seq_points, ins);
1958 if (bb) {
1959 bb->seq_points = g_slist_prepend_mempool (cfg->mempool, bb->seq_points, ins);
1960 bb->last_seq_point = ins;
1961 }
1962 }
1963
1964 void
1965 mono_add_var_location (MonoCompile *cfg, MonoInst *var, gboolean is_reg, int reg, int offset, int from, int to)
1966 {
1967 MonoDwarfLocListEntry *entry = (MonoDwarfLocListEntry *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDwarfLocListEntry));
1968
1969 if (is_reg)
1970 g_assert (offset == 0);
1971
1972 entry->is_reg = is_reg;
1973 entry->reg = reg;
1974 entry->offset = offset;
1975 entry->from = from;
1976 entry->to = to;
1977
1978 if (var == cfg->args [0])
1979 cfg->this_loclist = g_slist_append_mempool (cfg->mempool, cfg->this_loclist, entry);
1980 else if (var == cfg->rgctx_var)
1981 cfg->rgctx_loclist = g_slist_append_mempool (cfg->mempool, cfg->rgctx_loclist, entry);
1982 }
1983
1984 static void
1985 mono_apply_volatile (MonoInst *inst, MonoBitSet *set, gsize index)
1986 {
1987 inst->flags |= mono_bitset_test_safe (set, index) ? MONO_INST_VOLATILE : 0;
1988 }
1989
1990 static void
1991 mono_compile_create_vars (MonoCompile *cfg)
1992 {
1993 MonoMethodSignature *sig;
1994 MonoMethodHeader *header;
1995 int i;
1996
1997 header = cfg->header;
1998
1999 sig = mono_method_signature_internal (cfg->method);
2000
2001 if (!MONO_TYPE_IS_VOID (sig->ret)) {
2002 cfg->ret = mono_compile_create_var (cfg, sig->ret, OP_ARG);
2003 /* Inhibit optimizations */
2004 cfg->ret->flags |= MONO_INST_VOLATILE;
2005 }
2006 if (cfg->verbose_level > 2)
2007 g_print ("creating vars\n");
2008
2009 cfg->args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, (sig->param_count + sig->hasthis) * sizeof (MonoInst*));
2010
2011 if (sig->hasthis) {
2012 MonoInst* arg = mono_compile_create_var (cfg, m_class_get_this_arg (cfg->method->klass), OP_ARG);
2013 mono_apply_volatile (arg, header->volatile_args, 0);
2014 cfg->args [0] = arg;
2015 cfg->this_arg = arg;
2016 }
2017
2018 for (i = 0; i < sig->param_count; ++i) {
2019 MonoInst* arg = mono_compile_create_var (cfg, sig->params [i], OP_ARG);
2020 mono_apply_volatile (arg, header->volatile_args, i + sig->hasthis);
2021 cfg->args [i + sig->hasthis] = arg;
2022 }
2023
2024 if (cfg->verbose_level > 2) {
2025 if (cfg->ret) {
2026 printf ("\treturn : ");
2027 mono_print_ins (cfg->ret);
2028 }
2029
2030 if (sig->hasthis) {
2031 printf ("\tthis: ");
2032 mono_print_ins (cfg->args [0]);
2033 }
2034
2035 for (i = 0; i < sig->param_count; ++i) {
2036 printf ("\targ [%d]: ", i);
2037 mono_print_ins (cfg->args [i + sig->hasthis]);
2038 }
2039 }
2040
2041 cfg->locals_start = cfg->num_varinfo;
2042 cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, header->num_locals * sizeof (MonoInst*));
2043
2044 if (cfg->verbose_level > 2)
2045 g_print ("creating locals\n");
2046
2047 for (i = 0; i < header->num_locals; ++i) {
2048 if (cfg->verbose_level > 2)
2049 g_print ("\tlocal [%d]: ", i);
2050 cfg->locals [i] = mono_compile_create_var (cfg, header->locals [i], OP_LOCAL);
2051 mono_apply_volatile (cfg->locals [i], header->volatile_locals, i);
2052 }
2053
2054 if (cfg->verbose_level > 2)
2055 g_print ("locals done\n");
2056
2057 #ifdef ENABLE_LLVM
2058 if (COMPILE_LLVM (cfg))
2059 mono_llvm_create_vars (cfg);
2060 else
2061 mono_arch_create_vars (cfg);
2062 #else
2063 mono_arch_create_vars (cfg);
2064 #endif
2065
2066 if (cfg->method->save_lmf && cfg->create_lmf_var) {
2067 MonoInst *lmf_var = mono_compile_create_var (cfg, mono_get_int_type (), OP_LOCAL);
2068 lmf_var->flags |= MONO_INST_VOLATILE;
2069 lmf_var->flags |= MONO_INST_LMF;
2070 cfg->lmf_var = lmf_var;
2071 }
2072 }
2073
2074 void
2075 mono_print_code (MonoCompile *cfg, const char* msg)
2076 {
2077 MonoBasicBlock *bb;
2078
2079 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
2080 mono_print_bb (bb, msg);
2081 }
2082
2083 static void
2084 mono_postprocess_patches (MonoCompile *cfg)
2085 {
2086 MonoJumpInfo *patch_info;
2087 int i;
2088
2089 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
2090 switch (patch_info->type) {
2091 case MONO_PATCH_INFO_ABS: {
2092 MonoJitICallInfo *info = mono_find_jit_icall_by_addr (patch_info->data.target);
2093
2094 /*
2095 * Change patches of type MONO_PATCH_INFO_ABS into patches describing the
2096 * absolute address.
2097 */
2098 if (info) {
2099 patch_info->type = MONO_PATCH_INFO_JIT_ICALL;
2100 patch_info->data.name = info->name;
2101 }
2102
2103 if (patch_info->type == MONO_PATCH_INFO_ABS) {
2104 if (cfg->abs_patches) {
2105 MonoJumpInfo *abs_ji = (MonoJumpInfo *)g_hash_table_lookup (cfg->abs_patches, patch_info->data.target);
2106 if (abs_ji) {
2107 patch_info->type = abs_ji->type;
2108 patch_info->data.target = abs_ji->data.target;
2109 }
2110 }
2111 }
2112
2113 break;
2114 }
2115 case MONO_PATCH_INFO_SWITCH: {
2116 gpointer *table;
2117 if (cfg->method->dynamic) {
2118 table = (void **)mono_code_manager_reserve (cfg->dynamic_info->code_mp, sizeof (gpointer) * patch_info->data.table->table_size);
2119 } else {
2120 table = (void **)mono_domain_code_reserve (cfg->domain, sizeof (gpointer) * patch_info->data.table->table_size);
2121 }
2122
2123 for (i = 0; i < patch_info->data.table->table_size; i++) {
2124 /* Might be NULL if the switch is eliminated */
2125 if (patch_info->data.table->table [i]) {
2126 g_assert (patch_info->data.table->table [i]->native_offset);
2127 table [i] = GINT_TO_POINTER (patch_info->data.table->table [i]->native_offset);
2128 } else {
2129 table [i] = NULL;
2130 }
2131 }
2132 patch_info->data.table->table = (MonoBasicBlock**)table;
2133 break;
2134 }
2135 case MONO_PATCH_INFO_METHOD_JUMP: {
2136 unsigned char *ip = cfg->native_code + patch_info->ip.i;
2137
2138 mini_register_jump_site (cfg->domain, patch_info->data.method, ip);
2139 break;
2140 }
2141 default:
2142 /* do nothing */
2143 break;
2144 }
2145 }
2146 }
2147
2148 void
2149 mono_codegen (MonoCompile *cfg)
2150 {
2151 MonoBasicBlock *bb;
2152 int max_epilog_size;
2153 guint8 *code;
2154 MonoDomain *code_domain;
2155 guint unwindlen = 0;
2156
2157 if (mono_using_xdebug)
2158 /*
2159 * Recent gdb versions have trouble processing symbol files containing
2160 * overlapping address ranges, so allocate all code from the code manager
2161 * of the root domain. (#666152).
2162 */
2163 code_domain = mono_get_root_domain ();
2164 else
2165 code_domain = cfg->domain;
2166
2167 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2168 cfg->spill_count = 0;
2169 /* we reuse dfn here */
2170 /* bb->dfn = bb_count++; */
2171
2172 mono_arch_lowering_pass (cfg, bb);
2173
2174 if (cfg->opt & MONO_OPT_PEEPHOLE)
2175 mono_arch_peephole_pass_1 (cfg, bb);
2176
2177 mono_local_regalloc (cfg, bb);
2178
2179 if (cfg->opt & MONO_OPT_PEEPHOLE)
2180 mono_arch_peephole_pass_2 (cfg, bb);
2181
2182 if (cfg->gen_seq_points && !cfg->gen_sdb_seq_points)
2183 mono_bb_deduplicate_op_il_seq_points (cfg, bb);
2184 }
2185
2186 code = mono_arch_emit_prolog (cfg);
2187
2188 set_code_cursor (cfg, code);
2189 cfg->prolog_end = cfg->code_len;
2190 cfg->cfa_reg = cfg->cur_cfa_reg;
2191 cfg->cfa_offset = cfg->cur_cfa_offset;
2192
2193 mono_debug_open_method (cfg);
2194
2195 /* emit code all basic blocks */
2196 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2197 bb->native_offset = cfg->code_len;
2198 bb->real_native_offset = cfg->code_len;
2199 //if ((bb == cfg->bb_entry) || !(bb->region == -1 && !bb->dfn))
2200 mono_arch_output_basic_block (cfg, bb);
2201 bb->native_length = cfg->code_len - bb->native_offset;
2202
2203 if (bb == cfg->bb_exit) {
2204 cfg->epilog_begin = cfg->code_len;
2205 mono_arch_emit_epilog (cfg);
2206 cfg->epilog_end = cfg->code_len;
2207 }
2208
2209 if (bb->clause_holes) {
2210 GList *tmp;
2211 for (tmp = bb->clause_holes; tmp; tmp = tmp->prev)
2212 mono_cfg_add_try_hole (cfg, ((MonoLeaveClause *) tmp->data)->clause, cfg->native_code + bb->native_offset, bb);
2213 }
2214 }
2215
2216 mono_arch_emit_exceptions (cfg);
2217
2218 max_epilog_size = 0;
2219
2220 /* we always allocate code in cfg->domain->code_mp to increase locality */
2221 cfg->code_size = cfg->code_len + max_epilog_size;
2222
2223 /* fixme: align to MONO_ARCH_CODE_ALIGNMENT */
2224
2225 #ifdef MONO_ARCH_HAVE_UNWIND_TABLE
2226 if (!cfg->compile_aot)
2227 unwindlen = mono_arch_unwindinfo_init_method_unwind_info (cfg);
2228 #endif
2229
2230 if (cfg->method->dynamic) {
2231 /* Allocate the code into a separate memory pool so it can be freed */
2232 cfg->dynamic_info = g_new0 (MonoJitDynamicMethodInfo, 1);
2233 cfg->dynamic_info->code_mp = mono_code_manager_new_dynamic ();
2234 mono_domain_lock (cfg->domain);
2235 mono_dynamic_code_hash_insert (cfg->domain, cfg->method, cfg->dynamic_info);
2236 mono_domain_unlock (cfg->domain);
2237
2238 if (mono_using_xdebug)
2239 /* See the comment for cfg->code_domain */
2240 code = (guint8 *)mono_domain_code_reserve (code_domain, cfg->code_size + cfg->thunk_area + unwindlen);
2241 else
2242 code = (guint8 *)mono_code_manager_reserve (cfg->dynamic_info->code_mp, cfg->code_size + cfg->thunk_area + unwindlen);
2243 } else {
2244 code = (guint8 *)mono_domain_code_reserve (code_domain, cfg->code_size + cfg->thunk_area + unwindlen);
2245 }
2246
2247 if (cfg->thunk_area) {
2248 cfg->thunks_offset = cfg->code_size + unwindlen;
2249 cfg->thunks = code + cfg->thunks_offset;
2250 memset (cfg->thunks, 0, cfg->thunk_area);
2251 }
2252
2253 g_assert (code);
2254 memcpy (code, cfg->native_code, cfg->code_len);
2255 g_free (cfg->native_code);
2256 cfg->native_code = code;
2257 code = cfg->native_code + cfg->code_len;
2258
2259 /* g_assert (((int)cfg->native_code & (MONO_ARCH_CODE_ALIGNMENT - 1)) == 0); */
2260 mono_postprocess_patches (cfg);
2261
2262 #ifdef VALGRIND_JIT_REGISTER_MAP
2263 if (valgrind_register){
2264 char* nm = mono_method_full_name (cfg->method, TRUE);
2265 VALGRIND_JIT_REGISTER_MAP (nm, cfg->native_code, cfg->native_code + cfg->code_len);
2266 g_free (nm);
2267 }
2268 #endif
2269
2270 if (cfg->verbose_level > 0) {
2271 char* nm = mono_method_get_full_name (cfg->method);
2272 g_print ("Method %s emitted at %p to %p (code length %d) [%s]\n",
2273 nm,
2274 cfg->native_code, cfg->native_code + cfg->code_len, cfg->code_len, cfg->domain->friendly_name);
2275 g_free (nm);
2276 }
2277
2278 {
2279 gboolean is_generic = FALSE;
2280
2281 if (cfg->method->is_inflated || mono_method_get_generic_container (cfg->method) ||
2282 mono_class_is_gtd (cfg->method->klass) || mono_class_is_ginst (cfg->method->klass)) {
2283 is_generic = TRUE;
2284 }
2285
2286 if (cfg->gshared)
2287 g_assert (is_generic);
2288 }
2289
2290 #ifdef MONO_ARCH_HAVE_SAVE_UNWIND_INFO
2291 mono_arch_save_unwind_info (cfg);
2292 #endif
2293
2294 #ifdef MONO_ARCH_HAVE_PATCH_CODE_NEW
2295 {
2296 MonoJumpInfo *ji;
2297 gpointer target;
2298
2299 for (ji = cfg->patch_info; ji; ji = ji->next) {
2300 if (cfg->compile_aot) {
2301 switch (ji->type) {
2302 case MONO_PATCH_INFO_BB:
2303 case MONO_PATCH_INFO_LABEL:
2304 break;
2305 default:
2306 /* No need to patch these */
2307 continue;
2308 }
2309 }
2310
2311 if (ji->type == MONO_PATCH_INFO_NONE)
2312 continue;
2313
2314 target = mono_resolve_patch_target (cfg->method, cfg->domain, cfg->native_code, ji, cfg->run_cctors, &cfg->error);
2315 if (!mono_error_ok (&cfg->error)) {
2316 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
2317 return;
2318 }
2319 mono_arch_patch_code_new (cfg, cfg->domain, cfg->native_code, ji, target);
2320 }
2321 }
2322 #else
2323 mono_arch_patch_code (cfg, cfg->method, cfg->domain, cfg->native_code, cfg->patch_info, cfg->run_cctors, &cfg->error);
2324 if (!is_ok (&cfg->error)) {
2325 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
2326 return;
2327 }
2328 #endif
2329
2330 if (cfg->method->dynamic) {
2331 if (mono_using_xdebug)
2332 mono_domain_code_commit (code_domain, cfg->native_code, cfg->code_size, cfg->code_len);
2333 else
2334 mono_code_manager_commit (cfg->dynamic_info->code_mp, cfg->native_code, cfg->code_size, cfg->code_len);
2335 } else {
2336 mono_domain_code_commit (code_domain, cfg->native_code, cfg->code_size, cfg->code_len);
2337 }
2338 MONO_PROFILER_RAISE (jit_code_buffer, (cfg->native_code, cfg->code_len, MONO_PROFILER_CODE_BUFFER_METHOD, cfg->method));
2339
2340 mono_arch_flush_icache (cfg->native_code, cfg->code_len);
2341
2342 mono_debug_close_method (cfg);
2343
2344 #ifdef MONO_ARCH_HAVE_UNWIND_TABLE
2345 if (!cfg->compile_aot)
2346 mono_arch_unwindinfo_install_method_unwind_info (&cfg->arch.unwindinfo, cfg->native_code, cfg->code_len);
2347 #endif
2348 }
2349
2350 static void
2351 compute_reachable (MonoBasicBlock *bb)
2352 {
2353 int i;
2354
2355 if (!(bb->flags & BB_VISITED)) {
2356 bb->flags |= BB_VISITED;
2357 for (i = 0; i < bb->out_count; ++i)
2358 compute_reachable (bb->out_bb [i]);
2359 }
2360 }
2361
2362 static void mono_bb_ordering (MonoCompile *cfg)
2363 {
2364 int dfn = 0;
2365 /* Depth-first ordering on basic blocks */
2366 cfg->bblocks = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * (cfg->num_bblocks + 1));
2367
2368 cfg->max_block_num = cfg->num_bblocks;
2369
2370 df_visit (cfg->bb_entry, &dfn, cfg->bblocks);
2371
2372 #if defined(__GNUC__) && __GNUC__ == 7 && defined(__x86_64__)
2373 /* workaround for an AMD specific issue that only happens on GCC 7 so far,
2374 * for more information see https://github.com/mono/mono/issues/9298 */
2375 mono_memory_barrier ();
2376 #endif
2377 g_assertf (cfg->num_bblocks >= dfn, "cfg->num_bblocks=%d, dfn=%d\n", cfg->num_bblocks, dfn);
2378
2379 if (cfg->num_bblocks != dfn + 1) {
2380 MonoBasicBlock *bb;
2381
2382 cfg->num_bblocks = dfn + 1;
2383
2384 /* remove unreachable code, because the code in them may be
2385 * inconsistent (access to dead variables for example) */
2386 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
2387 bb->flags &= ~BB_VISITED;
2388 compute_reachable (cfg->bb_entry);
2389 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
2390 if (bb->flags & BB_EXCEPTION_HANDLER)
2391 compute_reachable (bb);
2392 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2393 if (!(bb->flags & BB_VISITED)) {
2394 if (cfg->verbose_level > 1)
2395 g_print ("found unreachable code in BB%d\n", bb->block_num);
2396 bb->code = bb->last_ins = NULL;
2397 while (bb->out_count)
2398 mono_unlink_bblock (cfg, bb, bb->out_bb [0]);
2399 }
2400 }
2401 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
2402 bb->flags &= ~BB_VISITED;
2403 }
2404 }
2405
2406 static void
2407 mono_handle_out_of_line_bblock (MonoCompile *cfg)
2408 {
2409 MonoBasicBlock *bb;
2410 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2411 if (bb->next_bb && bb->next_bb->out_of_line && bb->last_ins && !MONO_IS_BRANCH_OP (bb->last_ins)) {
2412 MonoInst *ins;
2413 MONO_INST_NEW (cfg, ins, OP_BR);
2414 MONO_ADD_INS (bb, ins);
2415 ins->inst_target_bb = bb->next_bb;
2416 }
2417 }
2418 }
2419
2420 static MonoJitInfo*
2421 create_jit_info (MonoCompile *cfg, MonoMethod *method_to_compile)
2422 {
2423 GSList *tmp;
2424 MonoMethodHeader *header;
2425 MonoJitInfo *jinfo;
2426 MonoJitInfoFlags flags = JIT_INFO_NONE;
2427 int num_clauses, num_holes = 0;
2428 guint32 stack_size = 0;
2429
2430 g_assert (method_to_compile == cfg->method);
2431 header = cfg->header;
2432
2433 if (cfg->gshared)
2434 flags |= JIT_INFO_HAS_GENERIC_JIT_INFO;
2435
2436 if (cfg->arch_eh_jit_info) {
2437 MonoJitArgumentInfo *arg_info;
2438 MonoMethodSignature *sig = mono_method_signature_internal (cfg->method_to_register);
2439
2440 /*
2441 * This cannot be computed during stack walking, as
2442 * mono_arch_get_argument_info () is not signal safe.
2443 */
2444 arg_info = g_newa (MonoJitArgumentInfo, sig->param_count + 1);
2445 stack_size = mono_arch_get_argument_info (sig, sig->param_count, arg_info);
2446
2447 if (stack_size)
2448 flags |= JIT_INFO_HAS_ARCH_EH_INFO;
2449 }
2450
2451 if (cfg->has_unwind_info_for_epilog && !(flags & JIT_INFO_HAS_ARCH_EH_INFO))
2452 flags |= JIT_INFO_HAS_ARCH_EH_INFO;
2453
2454 if (cfg->thunk_area)
2455 flags |= JIT_INFO_HAS_THUNK_INFO;
2456
2457 if (cfg->try_block_holes) {
2458 for (tmp = cfg->try_block_holes; tmp; tmp = tmp->next) {
2459 TryBlockHole *hole = (TryBlockHole *)tmp->data;
2460 MonoExceptionClause *ec = hole->clause;
2461 int hole_end = hole->basic_block->native_offset + hole->basic_block->native_length;
2462 MonoBasicBlock *clause_last_bb = cfg->cil_offset_to_bb [ec->try_offset + ec->try_len];
2463 g_assert (clause_last_bb);
2464
2465 /* Holes at the end of a try region can be represented by simply reducing the size of the block itself.*/
2466 if (clause_last_bb->native_offset != hole_end)
2467 ++num_holes;
2468 }
2469 if (num_holes)
2470 flags |= JIT_INFO_HAS_TRY_BLOCK_HOLES;
2471 if (G_UNLIKELY (cfg->verbose_level >= 4))
2472 printf ("Number of try block holes %d\n", num_holes);
2473 }
2474
2475 if (COMPILE_LLVM (cfg))
2476 num_clauses = cfg->llvm_ex_info_len;
2477 else
2478 num_clauses = header->num_clauses;
2479
2480 if (cfg->method->dynamic)
2481 jinfo = (MonoJitInfo *)g_malloc0 (mono_jit_info_size (flags, num_clauses, num_holes));
2482 else
2483 jinfo = (MonoJitInfo *)mono_domain_alloc0 (cfg->domain, mono_jit_info_size (flags, num_clauses, num_holes));
2484 jinfo_try_holes_size += num_holes * sizeof (MonoTryBlockHoleJitInfo);
2485
2486 mono_jit_info_init (jinfo, cfg->method_to_register, cfg->native_code, cfg->code_len, flags, num_clauses, num_holes);
2487 jinfo->domain_neutral = (cfg->opt & MONO_OPT_SHARED) != 0;
2488
2489 if (COMPILE_LLVM (cfg))
2490 jinfo->from_llvm = TRUE;
2491
2492 if (cfg->gshared) {
2493 MonoInst *inst;
2494 MonoGenericJitInfo *gi;
2495 GSList *loclist = NULL;
2496
2497 gi = mono_jit_info_get_generic_jit_info (jinfo);
2498 g_assert (gi);
2499
2500 if (cfg->method->dynamic)
2501 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2502 else
2503 gi->generic_sharing_context = (MonoGenericSharingContext *)mono_domain_alloc0 (cfg->domain, sizeof (MonoGenericSharingContext));
2504 mini_init_gsctx (cfg->method->dynamic ? NULL : cfg->domain, NULL, cfg->gsctx_context, gi->generic_sharing_context);
2505
2506 if ((method_to_compile->flags & METHOD_ATTRIBUTE_STATIC) ||
2507 mini_method_get_context (method_to_compile)->method_inst ||
2508 m_class_is_valuetype (method_to_compile->klass)) {
2509 g_assert (cfg->rgctx_var);
2510 }
2511
2512 gi->has_this = 1;
2513
2514 if ((method_to_compile->flags & METHOD_ATTRIBUTE_STATIC) ||
2515 mini_method_get_context (method_to_compile)->method_inst ||
2516 m_class_is_valuetype (method_to_compile->klass)) {
2517 inst = cfg->rgctx_var;
2518 if (!COMPILE_LLVM (cfg))
2519 g_assert (inst->opcode == OP_REGOFFSET);
2520 loclist = cfg->rgctx_loclist;
2521 } else {
2522 inst = cfg->args [0];
2523 loclist = cfg->this_loclist;
2524 }
2525
2526 if (loclist) {
2527 /* Needed to handle async exceptions */
2528 GSList *l;
2529 int i;
2530
2531 gi->nlocs = g_slist_length (loclist);
2532 if (cfg->method->dynamic)
2533 gi->locations = (MonoDwarfLocListEntry *)g_malloc0 (gi->nlocs * sizeof (MonoDwarfLocListEntry));
2534 else
2535 gi->locations = (MonoDwarfLocListEntry *)mono_domain_alloc0 (cfg->domain, gi->nlocs * sizeof (MonoDwarfLocListEntry));
2536 i = 0;
2537 for (l = loclist; l; l = l->next) {
2538 memcpy (&(gi->locations [i]), l->data, sizeof (MonoDwarfLocListEntry));
2539 i ++;
2540 }
2541 }
2542
2543 if (COMPILE_LLVM (cfg)) {
2544 g_assert (cfg->llvm_this_reg != -1);
2545 gi->this_in_reg = 0;
2546 gi->this_reg = cfg->llvm_this_reg;
2547 gi->this_offset = cfg->llvm_this_offset;
2548 } else if (inst->opcode == OP_REGVAR) {
2549 gi->this_in_reg = 1;
2550 gi->this_reg = inst->dreg;
2551 } else {
2552 g_assert (inst->opcode == OP_REGOFFSET);
2553 #ifdef TARGET_X86
2554 g_assert (inst->inst_basereg == X86_EBP);
2555 #elif defined(TARGET_AMD64)
2556 g_assert (inst->inst_basereg == X86_EBP || inst->inst_basereg == X86_ESP);
2557 #endif
2558 g_assert (inst->inst_offset >= G_MININT32 && inst->inst_offset <= G_MAXINT32);
2559
2560 gi->this_in_reg = 0;
2561 gi->this_reg = inst->inst_basereg;
2562 gi->this_offset = inst->inst_offset;
2563 }
2564 }
2565
2566 if (num_holes) {
2567 MonoTryBlockHoleTableJitInfo *table;
2568 int i;
2569
2570 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2571 table->num_holes = (guint16)num_holes;
2572 i = 0;
2573 for (tmp = cfg->try_block_holes; tmp; tmp = tmp->next) {
2574 guint32 start_bb_offset;
2575 MonoTryBlockHoleJitInfo *hole;
2576 TryBlockHole *hole_data = (TryBlockHole *)tmp->data;
2577 MonoExceptionClause *ec = hole_data->clause;
2578 int hole_end = hole_data->basic_block->native_offset + hole_data->basic_block->native_length;
2579 MonoBasicBlock *clause_last_bb = cfg->cil_offset_to_bb [ec->try_offset + ec->try_len];
2580 g_assert (clause_last_bb);
2581
2582 /* Holes at the end of a try region can be represented by simply reducing the size of the block itself.*/
2583 if (clause_last_bb->native_offset == hole_end)
2584 continue;
2585
2586 start_bb_offset = hole_data->start_offset - hole_data->basic_block->native_offset;
2587 hole = &table->holes [i++];
2588 hole->clause = hole_data->clause - &header->clauses [0];
2589 hole->offset = (guint32)hole_data->start_offset;
2590 hole->length = (guint16)(hole_data->basic_block->native_length - start_bb_offset);
2591
2592 if (G_UNLIKELY (cfg->verbose_level >= 4))
2593 printf ("\tTry block hole at eh clause %d offset %x length %x\n", hole->clause, hole->offset, hole->length);
2594 }
2595 g_assert (i == num_holes);
2596 }
2597
2598 if (jinfo->has_arch_eh_info) {
2599 MonoArchEHJitInfo *info;
2600
2601 info = mono_jit_info_get_arch_eh_info (jinfo);
2602
2603 info->stack_size = stack_size;
2604 }
2605
2606 if (cfg->thunk_area) {
2607 MonoThunkJitInfo *info;
2608
2609 info = mono_jit_info_get_thunk_info (jinfo);
2610 info->thunks_offset = cfg->thunks_offset;
2611 info->thunks_size = cfg->thunk_area;
2612 }
2613
2614 if (COMPILE_LLVM (cfg)) {
2615 if (num_clauses)
2616 memcpy (&jinfo->clauses [0], &cfg->llvm_ex_info [0], num_clauses * sizeof (MonoJitExceptionInfo));
2617 } else if (header->num_clauses) {
2618 int i;
2619
2620 for (i = 0; i < header->num_clauses; i++) {
2621 MonoExceptionClause *ec = &header->clauses [i];
2622 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2623 MonoBasicBlock *tblock;
2624 MonoInst *exvar;
2625
2626 ei->flags = ec->flags;
2627
2628 if (G_UNLIKELY (cfg->verbose_level >= 4))
2629 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);
2630
2631 exvar = mono_find_exvar_for_offset (cfg, ec->handler_offset);
2632 ei->exvar_offset = exvar ? exvar->inst_offset : 0;
2633
2634 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
2635 tblock = cfg->cil_offset_to_bb [ec->data.filter_offset];
2636 g_assert (tblock);
2637 ei->data.filter = cfg->native_code + tblock->native_offset;
2638 } else {
2639 ei->data.catch_class = ec->data.catch_class;
2640 }
2641
2642 tblock = cfg->cil_offset_to_bb [ec->try_offset];
2643 g_assert (tblock);
2644 g_assert (tblock->native_offset);
2645 ei->try_start = cfg->native_code + tblock->native_offset;
2646 if (tblock->extend_try_block) {
2647 /*
2648 * Extend the try block backwards to include parts of the previous call
2649 * instruction.
2650 */
2651 ei->try_start = (guint8*)ei->try_start - cfg->backend->monitor_enter_adjustment;
2652 }
2653 if (ec->try_offset + ec->try_len < header->code_size)
2654 tblock = cfg->cil_offset_to_bb [ec->try_offset + ec->try_len];
2655 else
2656 tblock = cfg->bb_exit;
2657 if (G_UNLIKELY (cfg->verbose_level >= 4))
2658 printf ("looking for end of try [%d, %d] -> %p (code size %d)\n", ec->try_offset, ec->try_len, tblock, header->code_size);
2659 g_assert (tblock);
2660 if (!tblock->native_offset) {
2661 int j, end;
2662 for (j = ec->try_offset + ec->try_len, end = ec->try_offset; j >= end; --j) {
2663 MonoBasicBlock *bb = cfg->cil_offset_to_bb [j];
2664 if (bb && bb->native_offset) {
2665 tblock = bb;
2666 break;
2667 }
2668 }
2669 }
2670 ei->try_end = cfg->native_code + tblock->native_offset;
2671 g_assert (tblock->native_offset);
2672 tblock = cfg->cil_offset_to_bb [ec->handler_offset];
2673 g_assert (tblock);
2674 ei->handler_start = cfg->native_code + tblock->native_offset;
2675
2676 for (tmp = cfg->try_block_holes; tmp; tmp = tmp->next) {
2677 TryBlockHole *hole = (TryBlockHole *)tmp->data;
2678 gpointer hole_end = cfg->native_code + (hole->basic_block->native_offset + hole->basic_block->native_length);
2679 if (hole->clause == ec && hole_end == ei->try_end) {
2680 if (G_UNLIKELY (cfg->verbose_level >= 4))
2681 printf ("\tShortening try block %d from %x to %x\n", i, (int)((guint8*)ei->try_end - cfg->native_code), hole->start_offset);
2682
2683 ei->try_end = cfg->native_code + hole->start_offset;
2684 break;
2685 }
2686 }
2687
2688 if (ec->flags == MONO_EXCEPTION_CLAUSE_FINALLY) {
2689 int end_offset;
2690 if (ec->handler_offset + ec->handler_len < header->code_size) {
2691 tblock = cfg->cil_offset_to_bb [ec->handler_offset + ec->handler_len];
2692 if (tblock->native_offset) {
2693 end_offset = tblock->native_offset;
2694 } else {
2695 int j, end;
2696
2697 for (j = ec->handler_offset + ec->handler_len, end = ec->handler_offset; j >= end; --j) {
2698 MonoBasicBlock *bb = cfg->cil_offset_to_bb [j];
2699 if (bb && bb->native_offset) {
2700 tblock = bb;
2701 break;
2702 }
2703 }
2704 end_offset = tblock->native_offset + tblock->native_length;
2705 }
2706 } else {
2707 end_offset = cfg->epilog_begin;
2708 }
2709 ei->data.handler_end = cfg->native_code + end_offset;
2710 }
2711 }
2712 }
2713
2714 if (G_UNLIKELY (cfg->verbose_level >= 4)) {
2715 int i;
2716 for (i = 0; i < jinfo->num_clauses; i++) {
2717 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2718 int start = (guint8*)ei->try_start - cfg->native_code;
2719 int end = (guint8*)ei->try_end - cfg->native_code;
2720 int handler = (guint8*)ei->handler_start - cfg->native_code;
2721 int handler_end = (guint8*)ei->data.handler_end - cfg->native_code;
2722
2723 printf ("JitInfo EH clause %d flags %x try %x-%x handler %x-%x\n", i, ei->flags, start, end, handler, handler_end);
2724 }
2725 }
2726
2727 if (cfg->encoded_unwind_ops) {
2728 /* Generated by LLVM */
2729 jinfo->unwind_info = mono_cache_unwind_info (cfg->encoded_unwind_ops, cfg->encoded_unwind_ops_len);
2730 g_free (cfg->encoded_unwind_ops);
2731 } else if (cfg->unwind_ops) {
2732 guint32 info_len;
2733 guint8 *unwind_info = mono_unwind_ops_encode (cfg->unwind_ops, &info_len);
2734 guint32 unwind_desc;
2735
2736 unwind_desc = mono_cache_unwind_info (unwind_info, info_len);
2737
2738 if (cfg->has_unwind_info_for_epilog) {
2739 MonoArchEHJitInfo *info;
2740
2741 info = mono_jit_info_get_arch_eh_info (jinfo);
2742 g_assert (info);
2743 info->epilog_size = cfg->code_len - cfg->epilog_begin;
2744 }
2745 jinfo->unwind_info = unwind_desc;
2746 g_free (unwind_info);
2747 } else {
2748 jinfo->unwind_info = cfg->used_int_regs;
2749 }
2750
2751 return jinfo;
2752 }
2753
2754 /* Return whenever METHOD is a gsharedvt method */
2755 static gboolean
2756 is_gsharedvt_method (MonoMethod *method)
2757 {
2758 MonoGenericContext *context;
2759 MonoGenericInst *inst;
2760 int i;
2761
2762 if (!method->is_inflated)
2763 return FALSE;
2764 context = mono_method_get_context (method);
2765 inst = context->class_inst;
2766 if (inst) {
2767 for (i = 0; i < inst->type_argc; ++i)
2768 if (mini_is_gsharedvt_gparam (inst->type_argv [i]))
2769 return TRUE;
2770 }
2771 inst = context->method_inst;
2772 if (inst) {
2773 for (i = 0; i < inst->type_argc; ++i)
2774 if (mini_is_gsharedvt_gparam (inst->type_argv [i]))
2775 return TRUE;
2776 }
2777 return FALSE;
2778 }
2779
2780 static gboolean
2781 is_open_method (MonoMethod *method)
2782 {
2783 MonoGenericContext *context;
2784
2785 if (!method->is_inflated)
2786 return FALSE;
2787 context = mono_method_get_context (method);
2788 if (context->class_inst && context->class_inst->is_open)
2789 return TRUE;
2790 if (context->method_inst && context->method_inst->is_open)
2791 return TRUE;
2792 return FALSE;
2793 }
2794
2795 static void
2796 mono_insert_nop_in_empty_bb (MonoCompile *cfg)
2797 {
2798 MonoBasicBlock *bb;
2799 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2800 if (bb->code)
2801 continue;
2802 MonoInst *nop;
2803 MONO_INST_NEW (cfg, nop, OP_NOP);
2804 MONO_ADD_INS (bb, nop);
2805 }
2806 }
2807 static void
2808 insert_safepoint (MonoCompile *cfg, MonoBasicBlock *bblock)
2809 {
2810 MonoInst *poll_addr, *ins;
2811
2812 if (cfg->disable_gc_safe_points)
2813 return;
2814
2815 if (cfg->verbose_level > 1)
2816 printf ("ADDING SAFE POINT TO BB %d\n", bblock->block_num);
2817
2818 g_assert (mini_safepoints_enabled ());
2819 NEW_AOTCONST (cfg, poll_addr, MONO_PATCH_INFO_GC_SAFE_POINT_FLAG, (gpointer)&mono_polling_required);
2820
2821 MONO_INST_NEW (cfg, ins, OP_GC_SAFE_POINT);
2822 ins->sreg1 = poll_addr->dreg;
2823
2824 if (bblock->flags & BB_EXCEPTION_HANDLER) {
2825 MonoInst *eh_op = bblock->code;
2826
2827 if (eh_op && eh_op->opcode != OP_START_HANDLER && eh_op->opcode != OP_GET_EX_OBJ) {
2828 eh_op = NULL;
2829 } else {
2830 MonoInst *next_eh_op = eh_op ? eh_op->next : NULL;
2831 // skip all EH relateds ops
2832 while (next_eh_op && (next_eh_op->opcode == OP_START_HANDLER || next_eh_op->opcode == OP_GET_EX_OBJ)) {
2833 eh_op = next_eh_op;
2834 next_eh_op = eh_op->next;
2835 }
2836 }
2837
2838 mono_bblock_insert_after_ins (bblock, eh_op, poll_addr);
2839 mono_bblock_insert_after_ins (bblock, poll_addr, ins);
2840 } else if (bblock == cfg->bb_entry) {
2841 mono_bblock_insert_after_ins (bblock, bblock->last_ins, poll_addr);
2842 mono_bblock_insert_after_ins (bblock, poll_addr, ins);
2843
2844 } else {
2845 mono_bblock_insert_before_ins (bblock, NULL, poll_addr);
2846 mono_bblock_insert_after_ins (bblock, poll_addr, ins);
2847 }
2848 }
2849
2850 /*
2851 This code inserts safepoints into managed code at important code paths.
2852 Those are:
2853
2854 -the first basic block
2855 -landing BB for exception handlers
2856 -loop body starts.
2857
2858 */
2859 static void
2860 insert_safepoints (MonoCompile *cfg)
2861 {
2862 MonoBasicBlock *bb;
2863
2864 g_assert (mini_safepoints_enabled ());
2865
2866 if (COMPILE_LLVM (cfg)) {
2867 if (!cfg->llvm_only && cfg->compile_aot) {
2868 /* We rely on LLVM's safepoints insertion capabilities. */
2869 if (cfg->verbose_level > 1)
2870 printf ("SKIPPING SAFEPOINTS for code compiled with LLVM\n");
2871 return;
2872 }
2873 }
2874
2875 if (cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
2876 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2877 /* These wrappers are called from the wrapper for the polling function, leading to potential stack overflow */
2878 if (info && info->subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER &&
2879 (info->d.icall.func == mono_threads_state_poll ||
2880 info->d.icall.func == mono_thread_interruption_checkpoint ||
2881 info->d.icall.func == mono_threads_exit_gc_safe_region_unbalanced)) {
2882 if (cfg->verbose_level > 1)
2883 printf ("SKIPPING SAFEPOINTS for the polling function icall\n");
2884 return;
2885 }
2886 }
2887
2888 if (cfg->method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
2889 if (cfg->verbose_level > 1)
2890 printf ("SKIPPING SAFEPOINTS for native-to-managed wrappers.\n");
2891 return;
2892 }
2893
2894 if (cfg->method->wrapper_type == MONO_WRAPPER_OTHER) {
2895 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
2896
2897 if (info && (info->subtype == WRAPPER_SUBTYPE_INTERP_IN || info->subtype == WRAPPER_SUBTYPE_INTERP_LMF)) {
2898 /* These wrappers shouldn't do any icalls */
2899 if (cfg->verbose_level > 1)
2900 printf ("SKIPPING SAFEPOINTS for interp-in wrappers.\n");
2901 return;
2902 }
2903 }
2904
2905 if (cfg->verbose_level > 1)
2906 printf ("INSERTING SAFEPOINTS\n");
2907 if (cfg->verbose_level > 2)
2908 mono_print_code (cfg, "BEFORE SAFEPOINTS");
2909
2910 /* if the method doesn't contain
2911 * (1) a call (so it's a leaf method)
2912 * (2) and no loops
2913 * we can skip the GC safepoint on method entry. */
2914 gboolean requires_safepoint = cfg->has_calls;
2915
2916 for (bb = cfg->bb_entry->next_bb; bb; bb = bb->next_bb) {
2917 if (bb->loop_body_start || (bb->flags & BB_EXCEPTION_HANDLER)) {
2918 requires_safepoint = TRUE;
2919 insert_safepoint (cfg, bb);
2920 }
2921 }
2922
2923 if (requires_safepoint)
2924 insert_safepoint (cfg, cfg->bb_entry);
2925
2926 if (cfg->verbose_level > 2)
2927 mono_print_code (cfg, "AFTER SAFEPOINTS");
2928
2929 }
2930
2931
2932 static void
2933 mono_insert_branches_between_bblocks (MonoCompile *cfg)
2934 {
2935 MonoBasicBlock *bb;
2936
2937 /* Add branches between non-consecutive bblocks */
2938 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2939 if (bb->last_ins && MONO_IS_COND_BRANCH_OP (bb->last_ins) &&
2940 bb->last_ins->inst_false_bb && bb->next_bb != bb->last_ins->inst_false_bb) {
2941 /* we are careful when inverting, since bugs like #59580
2942 * could show up when dealing with NaNs.
2943 */
2944 if (MONO_IS_COND_BRANCH_NOFP(bb->last_ins) && bb->next_bb == bb->last_ins->inst_true_bb) {
2945 MonoBasicBlock *tmp = bb->last_ins->inst_true_bb;
2946 bb->last_ins->inst_true_bb = bb->last_ins->inst_false_bb;
2947 bb->last_ins->inst_false_bb = tmp;
2948
2949 bb->last_ins->opcode = mono_reverse_branch_op (bb->last_ins->opcode);
2950 } else {
2951 MonoInst *inst = (MonoInst *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst));
2952 inst->opcode = OP_BR;
2953 inst->inst_target_bb = bb->last_ins->inst_false_bb;
2954 mono_bblock_add_inst (bb, inst);
2955 }
2956 }
2957 }
2958
2959 if (cfg->verbose_level >= 4) {
2960 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2961 MonoInst *tree = bb->code;
2962 g_print ("DUMP BLOCK %d:\n", bb->block_num);
2963 if (!tree)
2964 continue;
2965 for (; tree; tree = tree->next) {
2966 mono_print_ins_index (-1, tree);
2967 }
2968 }
2969 }
2970
2971 /* FIXME: */
2972 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2973 bb->max_vreg = cfg->next_vreg;
2974 }
2975 }
2976
2977 static void
2978 init_backend (MonoBackend *backend)
2979 {
2980 #ifdef MONO_ARCH_NEED_GOT_VAR
2981 backend->need_got_var = 1;
2982 #endif
2983 #ifdef MONO_ARCH_HAVE_CARD_TABLE_WBARRIER
2984 backend->have_card_table_wb = 1;
2985 #endif
2986 #ifdef MONO_ARCH_HAVE_OP_GENERIC_CLASS_INIT
2987 backend->have_op_generic_class_init = 1;
2988 #endif
2989 #ifdef MONO_ARCH_EMULATE_MUL_DIV
2990 backend->emulate_mul_div = 1;
2991 #endif
2992 #ifdef MONO_ARCH_EMULATE_DIV
2993 backend->emulate_div = 1;
2994 #endif
2995 #if !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
2996 backend->emulate_long_shift_opts = 1;
2997 #endif
2998 #ifdef MONO_ARCH_HAVE_OBJC_GET_SELECTOR
2999 backend->have_objc_get_selector = 1;
3000 #endif
3001 #ifdef MONO_ARCH_HAVE_GENERALIZED_IMT_TRAMPOLINE
3002 backend->have_generalized_imt_trampoline = 1;
3003 #endif
3004 #ifdef MONO_ARCH_GSHARED_SUPPORTED
3005 backend->gshared_supported = 1;
3006 #endif
3007 if (MONO_ARCH_USE_FPSTACK)
3008 backend->use_fpstack = 1;
3009 // Does the ABI have a volatile non-parameter register, so tailcall
3010 // can pass context to generics or interfaces?
3011 backend->have_volatile_non_param_register = MONO_ARCH_HAVE_VOLATILE_NON_PARAM_REGISTER;
3012 #ifdef MONO_ARCH_HAVE_OP_TAILCALL_MEMBASE
3013 backend->have_op_tailcall_membase = 1;
3014 #endif
3015 #ifdef MONO_ARCH_HAVE_OP_TAILCALL_REG
3016 backend->have_op_tailcall_reg = 1;
3017 #endif
3018 #ifndef MONO_ARCH_MONITOR_ENTER_ADJUSTMENT
3019 backend->monitor_enter_adjustment = 1;
3020 #else
3021 backend->monitor_enter_adjustment = MONO_ARCH_MONITOR_ENTER_ADJUSTMENT;
3022 #endif
3023 #if defined(MONO_ARCH_ILP32)
3024 backend->ilp32 = 1;
3025 #endif
3026 #ifdef MONO_ARCH_NEED_DIV_CHECK
3027 backend->need_div_check = 1;
3028 #endif
3029 #ifdef NO_UNALIGNED_ACCESS
3030 backend->no_unaligned_access = 1;
3031 #endif
3032 #ifdef MONO_ARCH_DYN_CALL_PARAM_AREA
3033 backend->dyn_call_param_area = MONO_ARCH_DYN_CALL_PARAM_AREA;
3034 #endif
3035 #ifdef MONO_ARCH_NO_DIV_WITH_MUL
3036 backend->disable_div_with_mul = 1;
3037 #endif
3038 #ifdef MONO_ARCH_EXPLICIT_NULL_CHECKS
3039 backend->explicit_null_checks = 1;
3040 #endif
3041 #ifdef MONO_ARCH_HAVE_OPTIMIZED_DIV
3042 backend->optimized_div = 1;
3043 #endif
3044 }
3045
3046 /*
3047 * mini_method_compile:
3048 * @method: the method to compile
3049 * @opts: the optimization flags to use
3050 * @domain: the domain where the method will be compiled in
3051 * @flags: compilation flags
3052 * @parts: debug flag
3053 *
3054 * Returns: a MonoCompile* pointer. Caller must check the exception_type
3055 * field in the returned struct to see if compilation succeded.
3056 */
3057 MonoCompile*
3058 mini_method_compile (MonoMethod *method, guint32 opts, MonoDomain *domain, JitFlags flags, int parts, int aot_method_index)
3059 {
3060 MonoMethodHeader *header;
3061 MonoMethodSignature *sig;
3062 MonoCompile *cfg;
3063 int i;
3064 gboolean try_generic_shared, try_llvm = FALSE;
3065 MonoMethod *method_to_compile, *method_to_register;
3066 gboolean method_is_gshared = FALSE;
3067 gboolean run_cctors = (flags & JIT_FLAG_RUN_CCTORS) ? 1 : 0;
3068 gboolean compile_aot = (flags & JIT_FLAG_AOT) ? 1 : 0;
3069 gboolean full_aot = (flags & JIT_FLAG_FULL_AOT) ? 1 : 0;
3070 gboolean disable_direct_icalls = (flags & JIT_FLAG_NO_DIRECT_ICALLS) ? 1 : 0;
3071 gboolean gsharedvt_method = FALSE;
3072 #ifdef ENABLE_LLVM
3073 gboolean llvm = (flags & JIT_FLAG_LLVM) ? 1 : 0;
3074 #endif
3075 static gboolean verbose_method_inited;
3076 static char **verbose_method_names;
3077
3078 mono_atomic_inc_i32 (&mono_jit_stats.methods_compiled);
3079 MONO_PROFILER_RAISE (jit_begin, (method));
3080 if (MONO_METHOD_COMPILE_BEGIN_ENABLED ())
3081 MONO_PROBE_METHOD_COMPILE_BEGIN (method);
3082
3083 gsharedvt_method = is_gsharedvt_method (method);
3084
3085 /*
3086 * In AOT mode, method can be the following:
3087 * - a gsharedvt method.
3088 * - a method inflated with type parameters. This is for ref/partial sharing.
3089 * - a method inflated with concrete types.
3090 */
3091 if (compile_aot) {
3092 if (is_open_method (method)) {
3093 try_generic_shared = TRUE;
3094 method_is_gshared = TRUE;
3095 } else {
3096 try_generic_shared = FALSE;
3097 }
3098 g_assert (opts & MONO_OPT_GSHARED);
3099 } else {
3100 try_generic_shared = mono_class_generic_sharing_enabled (method->klass) &&
3101 (opts & MONO_OPT_GSHARED) && mono_method_is_generic_sharable_full (method, FALSE, FALSE, FALSE);
3102 if (mini_is_gsharedvt_sharable_method (method)) {
3103 /*
3104 if (!mono_debug_count ())
3105 try_generic_shared = FALSE;
3106 */
3107 }
3108 }
3109
3110 /*
3111 if (try_generic_shared && !mono_debug_count ())
3112 try_generic_shared = FALSE;
3113 */
3114
3115 if (opts & MONO_OPT_GSHARED) {
3116 if (try_generic_shared)
3117 mono_atomic_inc_i32 (&mono_stats.generics_sharable_methods);
3118 else if (mono_method_is_generic_impl (method))
3119 mono_atomic_inc_i32 (&mono_stats.generics_unsharable_methods);
3120 }
3121
3122 #ifdef ENABLE_LLVM
3123 try_llvm = mono_use_llvm || llvm;
3124 #endif
3125
3126 #ifndef MONO_ARCH_FLOAT32_SUPPORTED
3127 opts &= ~MONO_OPT_FLOAT32;
3128 #endif
3129
3130 restart_compile:
3131 if (method_is_gshared) {
3132 method_to_compile = method;
3133 } else {
3134 if (try_generic_shared) {
3135 ERROR_DECL (error);
3136 method_to_compile = mini_get_shared_method_full (method, SHARE_MODE_NONE, error);
3137 mono_error_assert_ok (error);
3138 } else {
3139 method_to_compile = method;
3140 }
3141 }
3142
3143 cfg = g_new0 (MonoCompile, 1);
3144 cfg->method = method_to_compile;
3145 cfg->mempool = mono_mempool_new ();
3146 cfg->opt = opts;
3147 cfg->run_cctors = run_cctors;
3148 cfg->domain = domain;
3149 cfg->verbose_level = mini_verbose;
3150 cfg->compile_aot = compile_aot;
3151 cfg->full_aot = full_aot;
3152 cfg->disable_omit_fp = mini_debug_options.disable_omit_fp;
3153 cfg->skip_visibility = method->skip_visibility;
3154 cfg->orig_method = method;
3155 cfg->gen_seq_points = !mini_debug_options.no_seq_points_compact_data || mini_debug_options.gen_sdb_seq_points;
3156 cfg->gen_sdb_seq_points = mini_debug_options.gen_sdb_seq_points;
3157 cfg->llvm_only = (flags & JIT_FLAG_LLVM_ONLY) != 0;
3158 cfg->interp = (flags & JIT_FLAG_INTERP) != 0;
3159 cfg->backend = current_backend;
3160
3161 #ifdef HOST_ANDROID
3162 if (cfg->method->wrapper_type != MONO_WRAPPER_NONE) {
3163 /* FIXME: Why is this needed */
3164 cfg->gen_seq_points = FALSE;
3165 cfg->gen_sdb_seq_points = FALSE;
3166 }
3167 #endif
3168 if (cfg->method->wrapper_type == MONO_WRAPPER_ALLOC) {
3169 /* We can't have seq points inside gc critical regions */
3170 cfg->gen_seq_points = FALSE;
3171 cfg->gen_sdb_seq_points = FALSE;
3172 }
3173 /* coop requires loop detection to happen */
3174 if (mini_safepoints_enabled ())
3175 cfg->opt |= MONO_OPT_LOOP;
3176 if (cfg->backend->explicit_null_checks) {
3177 /* some platforms have null pages, so we can't SIGSEGV */
3178 cfg->explicit_null_checks = TRUE;
3179 } else {
3180 cfg->explicit_null_checks = mini_debug_options.explicit_null_checks || (flags & JIT_FLAG_EXPLICIT_NULL_CHECKS);
3181 }
3182 cfg->soft_breakpoints = mini_debug_options.soft_breakpoints;
3183 cfg->check_pinvoke_callconv = mini_debug_options.check_pinvoke_callconv;
3184 cfg->disable_direct_icalls = disable_direct_icalls;
3185 cfg->direct_pinvoke = (flags & JIT_FLAG_DIRECT_PINVOKE) != 0;
3186 if (try_generic_shared)
3187 cfg->gshared = TRUE;
3188 cfg->compile_llvm = try_llvm;
3189 cfg->token_info_hash = g_hash_table_new (NULL, NULL);
3190 if (cfg->compile_aot)
3191 cfg->method_index = aot_method_index;
3192
3193 /*
3194 if (!mono_debug_count ())
3195 cfg->opt &= ~MONO_OPT_FLOAT32;
3196 */
3197 if (cfg->llvm_only)
3198 cfg->opt &= ~MONO_OPT_SIMD;
3199 cfg->r4fp = (cfg->opt & MONO_OPT_FLOAT32) ? 1 : 0;
3200 cfg->r4_stack_type = cfg->r4fp ? STACK_R4 : STACK_R8;
3201
3202 if (cfg->gen_seq_points)
3203 cfg->seq_points = g_ptr_array_new ();
3204 error_init (&cfg->error);
3205
3206 if (cfg->compile_aot && !try_generic_shared && (method->is_generic || mono_class_is_gtd (method->klass) || method_is_gshared)) {
3207 cfg->exception_type = MONO_EXCEPTION_GENERIC_SHARING_FAILED;
3208 return cfg;
3209 }
3210
3211 if (cfg->gshared && (gsharedvt_method || mini_is_gsharedvt_sharable_method (method))) {
3212 MonoMethodInflated *inflated;
3213 MonoGenericContext *context;
3214
3215 if (gsharedvt_method) {
3216 g_assert (method->is_inflated);
3217 inflated = (MonoMethodInflated*)method;
3218 context = &inflated->context;
3219
3220 /* We are compiling a gsharedvt method directly */
3221 g_assert (compile_aot);
3222 } else {
3223 g_assert (method_to_compile->is_inflated);
3224 inflated = (MonoMethodInflated*)method_to_compile;
3225 context = &inflated->context;
3226 }
3227
3228 mini_init_gsctx (NULL, cfg->mempool, context, &cfg->gsctx);
3229 cfg->gsctx_context = context;
3230
3231 cfg->gsharedvt = TRUE;
3232 if (!cfg->llvm_only) {
3233 cfg->disable_llvm = TRUE;
3234 cfg->exception_message = g_strdup ("gsharedvt");
3235 }
3236 }
3237
3238 if (cfg->gshared) {
3239 method_to_register = method_to_compile;
3240 } else {
3241 g_assert (method == method_to_compile);
3242 method_to_register = method;
3243 }
3244 cfg->method_to_register = method_to_register;
3245
3246 ERROR_DECL (err);
3247 sig = mono_method_signature_checked (cfg->method, err);
3248 if (!sig) {
3249 cfg->exception_type = MONO_EXCEPTION_TYPE_LOAD;
3250 cfg->exception_message = g_strdup (mono_error_get_message (err));
3251 mono_error_cleanup (err);
3252 if (MONO_METHOD_COMPILE_END_ENABLED ())
3253 MONO_PROBE_METHOD_COMPILE_END (method, FALSE);
3254 return cfg;
3255 }
3256
3257 header = cfg->header = mono_method_get_header_checked (cfg->method, &cfg->error);
3258 if (!header) {
3259 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
3260 if (MONO_METHOD_COMPILE_END_ENABLED ())
3261 MONO_PROBE_METHOD_COMPILE_END (method, FALSE);
3262 return cfg;
3263 }
3264
3265 #ifdef ENABLE_LLVM
3266 {
3267 static gboolean inited;
3268
3269 if (!inited)
3270 inited = TRUE;
3271
3272 /*
3273 * Check for methods which cannot be compiled by LLVM early, to avoid
3274 * the extra compilation pass.
3275 */
3276 if (COMPILE_LLVM (cfg)) {
3277 mono_llvm_check_method_supported (cfg);
3278 if (cfg->disable_llvm) {
3279 if (cfg->verbose_level >= (cfg->llvm_only ? 0 : 1)) {
3280 //nm = mono_method_full_name (cfg->method, TRUE);
3281 printf ("LLVM failed for '%s.%s': %s\n", m_class_get_name (method->klass), method->name, cfg->exception_message);
3282 //g_free (nm);
3283 }
3284 if (cfg->llvm_only) {
3285 g_free (cfg->exception_message);
3286 cfg->disable_aot = TRUE;
3287 return cfg;
3288 }
3289 mono_destroy_compile (cfg);
3290 try_llvm = FALSE;
3291 goto restart_compile;
3292 }
3293 }
3294 }
3295 #endif
3296
3297 cfg->prof_flags = mono_profiler_get_call_instrumentation_flags (cfg->method);
3298 cfg->prof_coverage = mono_profiler_coverage_instrumentation_enabled (cfg->method);
3299
3300 gboolean trace = mono_jit_trace_calls != NULL && mono_trace_eval (cfg->method);
3301 if (trace)
3302 cfg->prof_flags = (MonoProfilerCallInstrumentationFlags)(
3303 MONO_PROFILER_CALL_INSTRUMENTATION_ENTER | MONO_PROFILER_CALL_INSTRUMENTATION_ENTER_CONTEXT |
3304 MONO_PROFILER_CALL_INSTRUMENTATION_LEAVE | MONO_PROFILER_CALL_INSTRUMENTATION_LEAVE_CONTEXT);
3305
3306 /* The debugger has no liveness information, so avoid sharing registers/stack slots */
3307 if (mini_debug_options.mdb_optimizations || MONO_CFG_PROFILE_CALL_CONTEXT (cfg)) {
3308 cfg->disable_reuse_registers = TRUE;
3309 cfg->disable_reuse_stack_slots = TRUE;
3310 /*
3311 * This decreases the change the debugger will read registers/stack slots which are
3312 * not yet initialized.
3313 */
3314 cfg->disable_initlocals_opt = TRUE;
3315
3316 cfg->extend_live_ranges = TRUE;
3317
3318 /* The debugger needs all locals to be on the stack or in a global register */
3319 cfg->disable_vreg_to_lvreg = TRUE;
3320
3321 /* Don't remove unused variables when running inside the debugger since the user
3322 * may still want to view them. */
3323 cfg->disable_deadce_vars = TRUE;
3324
3325 cfg->opt &= ~MONO_OPT_DEADCE;
3326 cfg->opt &= ~MONO_OPT_INLINE;
3327 cfg->opt &= ~MONO_OPT_COPYPROP;
3328 cfg->opt &= ~MONO_OPT_CONSPROP;
3329
3330 /* This is needed for the soft debugger, which doesn't like code after the epilog */
3331 cfg->disable_out_of_line_bblocks = TRUE;
3332 }
3333
3334 if (mono_using_xdebug) {
3335 /*
3336 * Make each variable use its own register/stack slot and extend
3337 * their liveness to cover the whole method, making them displayable
3338 * in gdb even after they are dead.
3339 */
3340 cfg->disable_reuse_registers = TRUE;
3341 cfg->disable_reuse_stack_slots = TRUE;
3342 cfg->extend_live_ranges = TRUE;
3343 cfg->compute_precise_live_ranges = TRUE;
3344 }
3345
3346 mini_gc_init_cfg (cfg);
3347
3348 if (method->wrapper_type == MONO_WRAPPER_OTHER) {
3349 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
3350
3351 if ((info && (info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN_SIG || info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT_SIG))) {
3352 cfg->disable_gc_safe_points = TRUE;
3353 /* This is safe, these wrappers only store to the stack */
3354 cfg->gen_write_barriers = FALSE;
3355 }
3356 }
3357
3358 if (COMPILE_LLVM (cfg)) {
3359 cfg->opt |= MONO_OPT_ABCREM;
3360 }
3361
3362 if (!verbose_method_inited) {
3363 char *env = g_getenv ("MONO_VERBOSE_METHOD");
3364 if (env != NULL)
3365 verbose_method_names = g_strsplit (env, ";", -1);
3366
3367 verbose_method_inited = TRUE;
3368 }
3369 if (verbose_method_names) {
3370 int i;
3371
3372 for (i = 0; verbose_method_names [i] != NULL; i++){
3373 const char *name = verbose_method_names [i];
3374
3375 if ((strchr (name, '.') > name) || strchr (name, ':')) {
3376 MonoMethodDesc *desc;
3377
3378 desc = mono_method_desc_new (name, TRUE);
3379 if (desc) {
3380 if (mono_method_desc_full_match (desc, cfg->method)) {
3381 cfg->verbose_level = 4;
3382 }
3383 mono_method_desc_free (desc);
3384 }
3385 } else {
3386 if (strcmp (cfg->method->name, name) == 0)
3387 cfg->verbose_level = 4;
3388 }
3389 }
3390 }
3391
3392 cfg->intvars = (guint16 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint16) * STACK_MAX * header->max_stack);
3393
3394 if (cfg->verbose_level > 0) {
3395 char *method_name;
3396
3397 method_name = mono_method_get_full_name (method);
3398 g_print ("converting %s%s%smethod %s\n", COMPILE_LLVM (cfg) ? "llvm " : "", cfg->gsharedvt ? "gsharedvt " : "", (cfg->gshared && !cfg->gsharedvt) ? "gshared " : "", method_name);
3399 /*
3400 if (COMPILE_LLVM (cfg))
3401 g_print ("converting llvm method %s\n", method_name = mono_method_full_name (method, TRUE));
3402 else if (cfg->gsharedvt)
3403 g_print ("converting gsharedvt method %s\n", method_name = mono_method_full_name (method_to_compile, TRUE));
3404 else if (cfg->gshared)
3405 g_print ("converting shared method %s\n", method_name = mono_method_full_name (method_to_compile, TRUE));
3406 else
3407 g_print ("converting method %s\n", method_name = mono_method_full_name (method, TRUE));
3408 */
3409 g_free (method_name);
3410 }
3411
3412 if (cfg->opt & MONO_OPT_ABCREM)
3413 cfg->opt |= MONO_OPT_SSA;
3414
3415 cfg->rs = mono_regstate_new ();
3416 cfg->next_vreg = cfg->rs->next_vreg;
3417
3418 /* FIXME: Fix SSA to handle branches inside bblocks */
3419 if (cfg->opt & MONO_OPT_SSA)
3420 cfg->enable_extended_bblocks = FALSE;
3421
3422 /*
3423 * FIXME: This confuses liveness analysis because variables which are assigned after
3424 * a branch inside a bblock become part of the kill set, even though the assignment
3425 * might not get executed. This causes the optimize_initlocals pass to delete some
3426 * assignments which are needed.
3427 * Also, the mono_if_conversion pass needs to be modified to recognize the code
3428 * created by this.
3429 */
3430 //cfg->enable_extended_bblocks = TRUE;
3431
3432 /*We must verify the method before doing any IR generation as mono_compile_create_vars can assert.*/
3433 if (mono_compile_is_broken (cfg, cfg->method, TRUE)) {
3434 if (mini_get_debug_options ()->break_on_unverified)
3435 G_BREAKPOINT ();
3436 return cfg;
3437 }
3438
3439 /*
3440 * create MonoInst* which represents arguments and local variables
3441 */
3442 mono_compile_create_vars (cfg);
3443
3444 mono_cfg_dump_create_context (cfg);
3445 mono_cfg_dump_begin_group (cfg);
3446
3447 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));
3448 mono_cfg_dump_ir (cfg, "method-to-ir");
3449
3450 if (cfg->gdump_ctx != NULL) {
3451 /* workaround for graph visualization, as it doesn't handle empty basic blocks properly */
3452 mono_insert_nop_in_empty_bb (cfg);
3453 mono_cfg_dump_ir (cfg, "mono_insert_nop_in_empty_bb");
3454 }
3455
3456 if (i < 0) {
3457 if (try_generic_shared && cfg->exception_type == MONO_EXCEPTION_GENERIC_SHARING_FAILED) {
3458 if (compile_aot) {
3459 if (MONO_METHOD_COMPILE_END_ENABLED ())
3460 MONO_PROBE_METHOD_COMPILE_END (method, FALSE);
3461 return cfg;
3462 }
3463 mono_destroy_compile (cfg);
3464 try_generic_shared = FALSE;
3465 goto restart_compile;
3466 }
3467 g_assert (cfg->exception_type != MONO_EXCEPTION_GENERIC_SHARING_FAILED);
3468
3469 if (MONO_METHOD_COMPILE_END_ENABLED ())
3470 MONO_PROBE_METHOD_COMPILE_END (method, FALSE);
3471 /* cfg contains the details of the failure, so let the caller cleanup */
3472 return cfg;
3473 }
3474
3475 cfg->stat_basic_blocks += cfg->num_bblocks;
3476
3477 if (COMPILE_LLVM (cfg)) {
3478 MonoInst *ins;
3479
3480 /* The IR has to be in SSA form for LLVM */
3481 cfg->opt |= MONO_OPT_SSA;
3482
3483 // FIXME:
3484 if (cfg->ret) {
3485 // Allow SSA on the result value
3486 cfg->ret->flags &= ~MONO_INST_VOLATILE;
3487
3488 // Add an explicit return instruction referencing the return value
3489 MONO_INST_NEW (cfg, ins, OP_SETRET);
3490 ins->sreg1 = cfg->ret->dreg;
3491
3492 MONO_ADD_INS (cfg->bb_exit, ins);
3493 }
3494
3495 cfg->opt &= ~MONO_OPT_LINEARS;
3496
3497 /* FIXME: */
3498 cfg->opt &= ~MONO_OPT_BRANCH;
3499 }
3500
3501 /* todo: remove code when we have verified that the liveness for try/catch blocks
3502 * works perfectly
3503 */
3504 /*
3505 * Currently, this can't be commented out since exception blocks are not
3506 * processed during liveness analysis.
3507 * It is also needed, because otherwise the local optimization passes would
3508 * delete assignments in cases like this:
3509 * r1 <- 1
3510 * <something which throws>
3511 * r1 <- 2
3512 * This also allows SSA to be run on methods containing exception clauses, since
3513 * SSA will ignore variables marked VOLATILE.
3514 */
3515 MONO_TIME_TRACK (mono_jit_stats.jit_liveness_handle_exception_clauses, mono_liveness_handle_exception_clauses (cfg));
3516 mono_cfg_dump_ir (cfg, "liveness_handle_exception_clauses");
3517
3518 MONO_TIME_TRACK (mono_jit_stats.jit_handle_out_of_line_bblock, mono_handle_out_of_line_bblock (cfg));
3519 mono_cfg_dump_ir (cfg, "handle_out_of_line_bblock");
3520
3521 /*g_print ("numblocks = %d\n", cfg->num_bblocks);*/
3522
3523 if (!COMPILE_LLVM (cfg)) {
3524 MONO_TIME_TRACK (mono_jit_stats.jit_decompose_long_opts, mono_decompose_long_opts (cfg));
3525 mono_cfg_dump_ir (cfg, "decompose_long_opts");
3526 }
3527
3528 /* Should be done before branch opts */
3529 if (cfg->opt & (MONO_OPT_CONSPROP | MONO_OPT_COPYPROP)) {
3530 MONO_TIME_TRACK (mono_jit_stats.jit_local_cprop, mono_local_cprop (cfg));
3531 mono_cfg_dump_ir (cfg, "local_cprop");
3532 }
3533
3534 if (cfg->flags & MONO_CFG_HAS_TYPE_CHECK) {
3535 MONO_TIME_TRACK (mono_jit_stats.jit_decompose_typechecks, mono_decompose_typechecks (cfg));
3536 if (cfg->gdump_ctx != NULL) {
3537 /* workaround for graph visualization, as it doesn't handle empty basic blocks properly */
3538 mono_insert_nop_in_empty_bb (cfg);
3539 }
3540 mono_cfg_dump_ir (cfg, "decompose_typechecks");
3541 }
3542
3543 /*
3544 * Should be done after cprop which can do strength reduction on
3545 * some of these ops, after propagating immediates.
3546 */
3547 if (cfg->has_emulated_ops) {
3548 MONO_TIME_TRACK (mono_jit_stats.jit_local_emulate_ops, mono_local_emulate_ops (cfg));
3549 mono_cfg_dump_ir (cfg, "local_emulate_ops");
3550 }
3551
3552 if (cfg->opt & MONO_OPT_BRANCH) {
3553 MONO_TIME_TRACK (mono_jit_stats.jit_optimize_branches, mono_optimize_branches (cfg));
3554 mono_cfg_dump_ir (cfg, "optimize_branches");
3555 }
3556
3557 /* This must be done _before_ global reg alloc and _after_ decompose */
3558 MONO_TIME_TRACK (mono_jit_stats.jit_handle_global_vregs, mono_handle_global_vregs (cfg));
3559 mono_cfg_dump_ir (cfg, "handle_global_vregs");
3560 if (cfg->opt & MONO_OPT_DEADCE) {
3561 MONO_TIME_TRACK (mono_jit_stats.jit_local_deadce, mono_local_deadce (cfg));
3562 mono_cfg_dump_ir (cfg, "local_deadce");
3563 }
3564 if (cfg->opt & MONO_OPT_ALIAS_ANALYSIS) {
3565 MONO_TIME_TRACK (mono_jit_stats.jit_local_alias_analysis, mono_local_alias_analysis (cfg));
3566 mono_cfg_dump_ir (cfg, "local_alias_analysis");
3567 }
3568 /* Disable this for LLVM to make the IR easier to handle */
3569 if (!COMPILE_LLVM (cfg)) {
3570 MONO_TIME_TRACK (mono_jit_stats.jit_if_conversion, mono_if_conversion (cfg));
3571 mono_cfg_dump_ir (cfg, "if_conversion");
3572 }
3573
3574 mono_threads_safepoint ();
3575
3576 MONO_TIME_TRACK (mono_jit_stats.jit_bb_ordering, mono_bb_ordering (cfg));
3577 mono_cfg_dump_ir (cfg, "bb_ordering");
3578
3579 if (((cfg->num_varinfo > 2000) || (cfg->num_bblocks > 1000)) && !cfg->compile_aot) {
3580 /*
3581 * we disable some optimizations if there are too many variables
3582 * because JIT time may become too expensive. The actual number needs
3583 * to be tweaked and eventually the non-linear algorithms should be fixed.
3584 */
3585 cfg->opt &= ~ (MONO_OPT_LINEARS | MONO_OPT_COPYPROP | MONO_OPT_CONSPROP);
3586 cfg->disable_ssa = TRUE;
3587 }
3588
3589 if (cfg->num_varinfo > 10000 && !cfg->llvm_only)
3590 /* Disable llvm for overly complex methods */
3591 cfg->disable_ssa = TRUE;
3592
3593 if (cfg->opt & MONO_OPT_LOOP) {
3594 MONO_TIME_TRACK (mono_jit_stats.jit_compile_dominator_info, mono_compile_dominator_info (cfg, MONO_COMP_DOM | MONO_COMP_IDOM));
3595 MONO_TIME_TRACK (mono_jit_stats.jit_compute_natural_loops, mono_compute_natural_loops (cfg));
3596 }
3597
3598 if (mono_threads_are_safepoints_enabled ()) {
3599 MONO_TIME_TRACK (mono_jit_stats.jit_insert_safepoints, insert_safepoints (cfg));
3600 mono_cfg_dump_ir (cfg, "insert_safepoints");
3601 }
3602
3603 /* after method_to_ir */
3604 if (parts == 1) {
3605 if (MONO_METHOD_COMPILE_END_ENABLED ())
3606 MONO_PROBE_METHOD_COMPILE_END (method, TRUE);
3607 return cfg;
3608 }
3609
3610 /*
3611 if (header->num_clauses)
3612 cfg->disable_ssa = TRUE;
3613 */
3614
3615 //#define DEBUGSSA "logic_run"
3616 //#define DEBUGSSA_CLASS "Tests"
3617 #ifdef DEBUGSSA
3618
3619 if (!cfg->disable_ssa) {
3620 mono_local_cprop (cfg);
3621
3622 #ifndef DISABLE_SSA
3623 mono_ssa_compute (cfg);
3624 #endif
3625 }
3626 #else
3627 if (cfg->opt & MONO_OPT_SSA) {
3628 if (!(cfg->comp_done & MONO_COMP_SSA) && !cfg->disable_ssa) {
3629 #ifndef DISABLE_SSA
3630 MONO_TIME_TRACK (mono_jit_stats.jit_ssa_compute, mono_ssa_compute (cfg));
3631 mono_cfg_dump_ir (cfg, "ssa_compute");
3632 #endif
3633
3634 if (cfg->verbose_level >= 2) {
3635 print_dfn (cfg);
3636 }
3637 }
3638 }
3639 #endif
3640
3641 /* after SSA translation */
3642 if (parts == 2) {
3643 if (MONO_METHOD_COMPILE_END_ENABLED ())
3644 MONO_PROBE_METHOD_COMPILE_END (method, TRUE);
3645 return cfg;
3646 }
3647
3648 if ((cfg->opt & MONO_OPT_CONSPROP) || (cfg->opt & MONO_OPT_COPYPROP)) {
3649 if (cfg->comp_done & MONO_COMP_SSA && !COMPILE_LLVM (cfg)) {
3650 #ifndef DISABLE_SSA
3651 MONO_TIME_TRACK (mono_jit_stats.jit_ssa_cprop, mono_ssa_cprop (cfg));
3652 mono_cfg_dump_ir (cfg, "ssa_cprop");
3653 #endif
3654 }
3655 }
3656
3657 #ifndef DISABLE_SSA
3658 if (cfg->comp_done & MONO_COMP_SSA && !COMPILE_LLVM (cfg)) {
3659 //mono_ssa_strength_reduction (cfg);
3660
3661 if (cfg->opt & MONO_OPT_DEADCE) {
3662 MONO_TIME_TRACK (mono_jit_stats.jit_ssa_deadce, mono_ssa_deadce (cfg));
3663 mono_cfg_dump_ir (cfg, "ssa_deadce");
3664 }
3665
3666 if ((cfg->flags & (MONO_CFG_HAS_LDELEMA|MONO_CFG_HAS_CHECK_THIS)) && (cfg->opt & MONO_OPT_ABCREM)) {
3667 MONO_TIME_TRACK (mono_jit_stats.jit_perform_abc_removal, mono_perform_abc_removal (cfg));
3668 mono_cfg_dump_ir (cfg, "perform_abc_removal");
3669 }
3670
3671 MONO_TIME_TRACK (mono_jit_stats.jit_ssa_remove, mono_ssa_remove (cfg));
3672 mono_cfg_dump_ir (cfg, "ssa_remove");
3673 MONO_TIME_TRACK (mono_jit_stats.jit_local_cprop2, mono_local_cprop (cfg));
3674 mono_cfg_dump_ir (cfg, "local_cprop2");
3675 MONO_TIME_TRACK (mono_jit_stats.jit_handle_global_vregs2, mono_handle_global_vregs (cfg));
3676 mono_cfg_dump_ir (cfg, "handle_global_vregs2");
3677 if (cfg->opt & MONO_OPT_DEADCE) {
3678 MONO_TIME_TRACK (mono_jit_stats.jit_local_deadce2, mono_local_deadce (cfg));
3679 mono_cfg_dump_ir (cfg, "local_deadce2");
3680 }
3681
3682 if (cfg->opt & MONO_OPT_BRANCH) {
3683 MONO_TIME_TRACK (mono_jit_stats.jit_optimize_branches2, mono_optimize_branches (cfg));
3684 mono_cfg_dump_ir (cfg, "optimize_branches2");
3685 }
3686 }
3687 #endif
3688
3689 if (cfg->comp_done & MONO_COMP_SSA && COMPILE_LLVM (cfg)) {
3690 mono_ssa_loop_invariant_code_motion (cfg);
3691 mono_cfg_dump_ir (cfg, "loop_invariant_code_motion");
3692 /* This removes MONO_INST_FAULT flags too so perform it unconditionally */
3693 if (cfg->opt & MONO_OPT_ABCREM) {
3694 mono_perform_abc_removal (cfg);
3695 mono_cfg_dump_ir (cfg, "abc_removal");
3696 }
3697 }
3698
3699 /* after SSA removal */
3700 if (parts == 3) {
3701 if (MONO_METHOD_COMPILE_END_ENABLED ())
3702 MONO_PROBE_METHOD_COMPILE_END (method, TRUE);
3703 return cfg;
3704 }
3705
3706 if (cfg->llvm_only && cfg->gsharedvt)
3707 mono_ssa_remove_gsharedvt (cfg);
3708
3709 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
3710 if (COMPILE_SOFT_FLOAT (cfg))
3711 mono_decompose_soft_float (cfg);
3712 #endif
3713 MONO_TIME_TRACK (mono_jit_stats.jit_decompose_vtype_opts, mono_decompose_vtype_opts (cfg));
3714 if (cfg->flags & MONO_CFG_NEEDS_DECOMPOSE) {
3715 MONO_TIME_TRACK (mono_jit_stats.jit_decompose_array_access_opts, mono_decompose_array_access_opts (cfg));
3716 mono_cfg_dump_ir (cfg, "decompose_array_access_opts");
3717 }
3718
3719 if (cfg->got_var) {
3720 #ifndef MONO_ARCH_GOT_REG
3721 GList *regs;
3722 #endif
3723 int got_reg;
3724
3725 g_assert (cfg->got_var_allocated);
3726
3727 /*
3728 * Allways allocate the GOT var to a register, because keeping it
3729 * in memory will increase the number of live temporaries in some
3730 * code created by inssel.brg, leading to the well known spills+
3731 * branches problem. Testcase: mcs crash in
3732 * System.MonoCustomAttrs:GetCustomAttributes.
3733 */
3734 #ifdef MONO_ARCH_GOT_REG
3735 got_reg = MONO_ARCH_GOT_REG;
3736 #else
3737 regs = mono_arch_get_global_int_regs (cfg);
3738 g_assert (regs);
3739 got_reg = GPOINTER_TO_INT (regs->data);
3740 g_list_free (regs);
3741 #endif
3742 cfg->got_var->opcode = OP_REGVAR;
3743 cfg->got_var->dreg = got_reg;
3744 cfg->used_int_regs |= 1LL << cfg->got_var->dreg;
3745 }
3746
3747 /*
3748 * Have to call this again to process variables added since the first call.
3749 */
3750 MONO_TIME_TRACK(mono_jit_stats.jit_liveness_handle_exception_clauses2, mono_liveness_handle_exception_clauses (cfg));
3751
3752 if (cfg->opt & MONO_OPT_LINEARS) {
3753 GList *vars, *regs, *l;
3754
3755 /* fixme: maybe we can avoid to compute livenesss here if already computed ? */
3756 cfg->comp_done &= ~MONO_COMP_LIVENESS;
3757 if (!(cfg->comp_done & MONO_COMP_LIVENESS))
3758 MONO_TIME_TRACK (mono_jit_stats.jit_analyze_liveness, mono_analyze_liveness (cfg));
3759
3760 if ((vars = mono_arch_get_allocatable_int_vars (cfg))) {
3761 regs = mono_arch_get_global_int_regs (cfg);
3762 /* Remove the reg reserved for holding the GOT address */
3763 if (cfg->got_var) {
3764 for (l = regs; l; l = l->next) {
3765 if (GPOINTER_TO_UINT (l->data) == cfg->got_var->dreg) {
3766 regs = g_list_delete_link (regs, l);
3767 break;
3768 }
3769 }
3770 }
3771 MONO_TIME_TRACK (mono_jit_stats.jit_linear_scan, mono_linear_scan (cfg, vars, regs, &cfg->used_int_regs));
3772 mono_cfg_dump_ir (cfg, "linear_scan");
3773 }
3774 }
3775
3776 //mono_print_code (cfg, "");
3777
3778 //print_dfn (cfg);
3779
3780 /* variables are allocated after decompose, since decompose could create temps */
3781 if (!COMPILE_LLVM (cfg)) {
3782 MONO_TIME_TRACK (mono_jit_stats.jit_arch_allocate_vars, mono_arch_allocate_vars (cfg));
3783 mono_cfg_dump_ir (cfg, "arch_allocate_vars");
3784 if (cfg->exception_type)
3785 return cfg;
3786 }
3787
3788 if (cfg->gsharedvt)
3789 mono_allocate_gsharedvt_vars (cfg);
3790
3791 if (!COMPILE_LLVM (cfg)) {
3792 gboolean need_local_opts;
3793 MONO_TIME_TRACK (mono_jit_stats.jit_spill_global_vars, mono_spill_global_vars (cfg, &need_local_opts));
3794 mono_cfg_dump_ir (cfg, "spill_global_vars");
3795
3796 if (need_local_opts || cfg->compile_aot) {
3797 /* To optimize code created by spill_global_vars */
3798 MONO_TIME_TRACK (mono_jit_stats.jit_local_cprop3, mono_local_cprop (cfg));
3799 if (cfg->opt & MONO_OPT_DEADCE)
3800 MONO_TIME_TRACK (mono_jit_stats.jit_local_deadce3, mono_local_deadce (cfg));
3801 mono_cfg_dump_ir (cfg, "needs_local_opts");
3802 }
3803 }
3804
3805 mono_insert_branches_between_bblocks (cfg);
3806
3807 if (COMPILE_LLVM (cfg)) {
3808 #ifdef ENABLE_LLVM
3809 char *nm;
3810
3811 /* The IR has to be in SSA form for LLVM */
3812 if (!(cfg->comp_done & MONO_COMP_SSA)) {
3813 cfg->exception_message = g_strdup ("SSA disabled.");
3814 cfg->disable_llvm = TRUE;
3815 }
3816
3817 if (cfg->flags & MONO_CFG_NEEDS_DECOMPOSE)
3818 mono_decompose_array_access_opts (cfg);
3819
3820 if (!cfg->disable_llvm)
3821 mono_llvm_emit_method (cfg);
3822 if (cfg->disable_llvm) {
3823 if (cfg->verbose_level >= (cfg->llvm_only ? 0 : 1)) {
3824 //nm = mono_method_full_name (cfg->method, TRUE);
3825 printf ("LLVM failed for '%s.%s': %s\n", m_class_get_name (method->klass), method->name, cfg->exception_message);
3826 //g_free (nm);
3827 }
3828 if (cfg->llvm_only) {
3829 cfg->disable_aot = TRUE;
3830 return cfg;
3831 }
3832 mono_destroy_compile (cfg);
3833 try_llvm = FALSE;
3834 goto restart_compile;
3835 }
3836
3837 if (cfg->verbose_level > 0 && !cfg->compile_aot) {
3838 nm = mono_method_get_full_name (cfg->method);
3839 g_print ("LLVM Method %s emitted at %p to %p (code length %d) [%s]\n",
3840 nm,
3841 cfg->native_code, cfg->native_code + cfg->code_len, cfg->code_len, cfg->domain->friendly_name);
3842 g_free (nm);
3843 }
3844 #endif
3845 } else {
3846 MONO_TIME_TRACK (mono_jit_stats.jit_codegen, mono_codegen (cfg));
3847 mono_cfg_dump_ir (cfg, "codegen");
3848 if (cfg->exception_type)
3849 return cfg;
3850 }
3851
3852 if (COMPILE_LLVM (cfg))
3853 mono_atomic_inc_i32 (&mono_jit_stats.methods_with_llvm);
3854 else
3855 mono_atomic_inc_i32 (&mono_jit_stats.methods_without_llvm);
3856
3857 MONO_TIME_TRACK (mono_jit_stats.jit_create_jit_info, cfg->jit_info = create_jit_info (cfg, method_to_compile));
3858
3859 if (cfg->extend_live_ranges) {
3860 /* Extend live ranges to cover the whole method */
3861 for (i = 0; i < cfg->num_varinfo; ++i)
3862 MONO_VARINFO (cfg, i)->live_range_end = cfg->code_len;
3863 }
3864
3865 MONO_TIME_TRACK (mono_jit_stats.jit_gc_create_gc_map, mini_gc_create_gc_map (cfg));
3866 MONO_TIME_TRACK (mono_jit_stats.jit_save_seq_point_info, mono_save_seq_point_info (cfg, cfg->jit_info));
3867
3868 if (!cfg->compile_aot) {
3869 mono_save_xdebug_info (cfg);
3870 mono_lldb_save_method_info (cfg);
3871 }
3872
3873 if (cfg->verbose_level >= 2) {
3874 char *id = mono_method_full_name (cfg->method, FALSE);
3875 mono_disassemble_code (cfg, cfg->native_code, cfg->code_len, id + 3);
3876 g_free (id);
3877 }
3878
3879 if (!cfg->compile_aot && !(flags & JIT_FLAG_DISCARD_RESULTS)) {
3880 mono_domain_lock (cfg->domain);
3881 mono_jit_info_table_add (cfg->domain, cfg->jit_info);
3882
3883 if (cfg->method->dynamic)
3884 mono_dynamic_code_hash_lookup (cfg->domain, cfg->method)->ji = cfg->jit_info;
3885 mono_domain_unlock (cfg->domain);
3886 }
3887
3888 #if 0
3889 if (cfg->gsharedvt)
3890 printf ("GSHAREDVT: %s\n", mono_method_full_name (cfg->method, TRUE));
3891 #endif
3892
3893 /* collect statistics */
3894 #ifndef DISABLE_PERFCOUNTERS
3895 mono_atomic_inc_i32 (&mono_perfcounters->jit_methods);
3896 mono_atomic_fetch_add_i32 (&mono_perfcounters->jit_bytes, header->code_size);
3897 #endif
3898 gint32 code_size_ratio = cfg->code_len;
3899 mono_atomic_fetch_add_i32 (&mono_jit_stats.allocated_code_size, code_size_ratio);
3900 mono_atomic_fetch_add_i32 (&mono_jit_stats.native_code_size, code_size_ratio);
3901 /* FIXME: use an explicit function to read booleans */
3902 if ((gboolean)mono_atomic_load_i32 ((gint32*)&mono_jit_stats.enabled)) {
3903 if (code_size_ratio > mono_atomic_load_i32 (&mono_jit_stats.biggest_method_size)) {
3904 mono_atomic_store_i32 (&mono_jit_stats.biggest_method_size, code_size_ratio);
3905 char *biggest_method = g_strdup_printf ("%s::%s)", m_class_get_name (method->klass), method->name);
3906 biggest_method = (char*)mono_atomic_xchg_ptr ((gpointer*)&mono_jit_stats.biggest_method, biggest_method);
3907 g_free (biggest_method);
3908 }
3909 code_size_ratio = (code_size_ratio * 100) / header->code_size;
3910 if (code_size_ratio > mono_atomic_load_i32 (&mono_jit_stats.max_code_size_ratio)) {
3911 mono_atomic_store_i32 (&mono_jit_stats.max_code_size_ratio, code_size_ratio);
3912 char *max_ratio_method = g_strdup_printf ("%s::%s)", m_class_get_name (method->klass), method->name);
3913 max_ratio_method = (char*)mono_atomic_xchg_ptr ((gpointer*)&mono_jit_stats.max_ratio_method, max_ratio_method);
3914 g_free (max_ratio_method);
3915 }
3916 }
3917
3918 if (MONO_METHOD_COMPILE_END_ENABLED ())
3919 MONO_PROBE_METHOD_COMPILE_END (method, TRUE);
3920
3921 mono_cfg_dump_close_group (cfg);
3922
3923 return cfg;
3924 }
3925
3926 gboolean
3927 mini_class_has_reference_variant_generic_argument (MonoCompile *cfg, MonoClass *klass, int context_used)
3928 {
3929 int i;
3930 MonoGenericContainer *container;
3931 MonoGenericInst *ginst;
3932
3933 if (mono_class_is_ginst (klass)) {
3934 container = mono_class_get_generic_container (mono_class_get_generic_class (klass)->container_class);
3935 ginst = mono_class_get_generic_class (klass)->context.class_inst;
3936 } else if (mono_class_is_gtd (klass) && context_used) {
3937 container = mono_class_get_generic_container (klass);
3938 ginst = container->context.class_inst;
3939 } else {
3940 return FALSE;
3941 }
3942
3943 for (i = 0; i < container->type_argc; ++i) {
3944 MonoType *type;
3945 if (!(mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT)))
3946 continue;
3947 type = ginst->type_argv [i];
3948 if (mini_type_is_reference (type))
3949 return TRUE;
3950 }
3951 return FALSE;
3952 }
3953
3954 void
3955 mono_cfg_add_try_hole (MonoCompile *cfg, MonoExceptionClause *clause, guint8 *start, MonoBasicBlock *bb)
3956 {
3957 TryBlockHole *hole = (TryBlockHole *)mono_mempool_alloc (cfg->mempool, sizeof (TryBlockHole));
3958 hole->clause = clause;
3959 hole->start_offset = start - cfg->native_code;
3960 hole->basic_block = bb;
3961
3962 cfg->try_block_holes = g_slist_append_mempool (cfg->mempool, cfg->try_block_holes, hole);
3963 }
3964
3965 void
3966 mono_cfg_set_exception (MonoCompile *cfg, MonoExceptionType type)
3967 {
3968 cfg->exception_type = type;
3969 }
3970
3971 /* Assumes ownership of the MSG argument */
3972 void
3973 mono_cfg_set_exception_invalid_program (MonoCompile *cfg, char *msg)
3974 {
3975 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
3976 mono_error_set_generic_error (&cfg->error, "System", "InvalidProgramException", "%s", msg);
3977 }
3978
3979 #endif /* DISABLE_JIT */
3980
3981 gint64 mono_time_track_start ()
3982 {
3983 return mono_100ns_ticks ();
3984 }
3985
3986 /*
3987 * mono_time_track_end:
3988 *
3989 * Uses UnlockedAddDouble () to update \param time.
3990 */
3991 void mono_time_track_end (gint64 *time, gint64 start)
3992 {
3993 UnlockedAdd64 (time, mono_100ns_ticks () - start);
3994 }
3995
3996 /*
3997 * mono_update_jit_stats:
3998 *
3999 * Only call this function in locked environments to avoid data races.
4000 */
4001 MONO_NO_SANITIZE_THREAD
4002 void
4003 mono_update_jit_stats (MonoCompile *cfg)
4004 {
4005 mono_jit_stats.allocate_var += cfg->stat_allocate_var;
4006 mono_jit_stats.locals_stack_size += cfg->stat_locals_stack_size;
4007 mono_jit_stats.basic_blocks += cfg->stat_basic_blocks;
4008 mono_jit_stats.max_basic_blocks = MAX (cfg->stat_basic_blocks, mono_jit_stats.max_basic_blocks);
4009 mono_jit_stats.cil_code_size += cfg->stat_cil_code_size;
4010 mono_jit_stats.regvars += cfg->stat_n_regvars;
4011 mono_jit_stats.inlineable_methods += cfg->stat_inlineable_methods;
4012 mono_jit_stats.inlined_methods += cfg->stat_inlined_methods;
4013 mono_jit_stats.code_reallocs += cfg->stat_code_reallocs;
4014 }
4015
4016 /*
4017 * mono_jit_compile_method_inner:
4018 *
4019 * Main entry point for the JIT.
4020 */
4021 gpointer
4022 mono_jit_compile_method_inner (MonoMethod *method, MonoDomain *target_domain, int opt, MonoError *error)
4023 {
4024 MonoCompile *cfg;
4025 gpointer code = NULL;
4026 MonoJitInfo *jinfo, *info;
4027 MonoVTable *vtable;
4028 MonoException *ex = NULL;
4029 gint64 start;
4030 MonoMethod *prof_method, *shared;
4031
4032 error_init (error);
4033
4034 start = mono_time_track_start ();
4035 cfg = mini_method_compile (method, opt, target_domain, JIT_FLAG_RUN_CCTORS, 0, -1);
4036 gint64 jit_time = 0.0;
4037 mono_time_track_end (&jit_time, start);
4038 UnlockedAdd64 (&mono_jit_stats.jit_time, jit_time);
4039
4040 prof_method = cfg->method;
4041
4042 switch (cfg->exception_type) {
4043 case MONO_EXCEPTION_NONE:
4044 break;
4045 case MONO_EXCEPTION_TYPE_LOAD:
4046 case MONO_EXCEPTION_MISSING_FIELD:
4047 case MONO_EXCEPTION_MISSING_METHOD:
4048 case MONO_EXCEPTION_FILE_NOT_FOUND:
4049 case MONO_EXCEPTION_BAD_IMAGE:
4050 case MONO_EXCEPTION_INVALID_PROGRAM: {
4051 /* Throw a type load exception if needed */
4052 if (cfg->exception_ptr) {
4053 ex = mono_class_get_exception_for_failure ((MonoClass *)cfg->exception_ptr);
4054 } else {
4055 if (cfg->exception_type == MONO_EXCEPTION_MISSING_FIELD)
4056 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "MissingFieldException", cfg->exception_message);
4057 else if (cfg->exception_type == MONO_EXCEPTION_MISSING_METHOD)
4058 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "MissingMethodException", cfg->exception_message);
4059 else if (cfg->exception_type == MONO_EXCEPTION_TYPE_LOAD)
4060 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "TypeLoadException", cfg->exception_message);
4061 else if (cfg->exception_type == MONO_EXCEPTION_FILE_NOT_FOUND)
4062 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System.IO", "FileNotFoundException", cfg->exception_message);
4063 else if (cfg->exception_type == MONO_EXCEPTION_BAD_IMAGE)
4064 ex = mono_get_exception_bad_image_format (cfg->exception_message);
4065 else if (cfg->exception_type == MONO_EXCEPTION_INVALID_PROGRAM)
4066 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "InvalidProgramException", cfg->exception_message);
4067 else
4068 g_assert_not_reached ();
4069 }
4070 break;
4071 }
4072 case MONO_EXCEPTION_MONO_ERROR:
4073 // FIXME: MonoError has no copy ctor
4074 g_assert (!mono_error_ok (&cfg->error));
4075 ex = mono_error_convert_to_exception (&cfg->error);
4076 break;
4077 default:
4078 g_assert_not_reached ();
4079 }
4080
4081 if (ex) {
4082 MONO_PROFILER_RAISE (jit_failed, (method));
4083
4084 mono_destroy_compile (cfg);
4085 mono_error_set_exception_instance (error, ex);
4086
4087 return NULL;
4088 }
4089
4090 if (mono_method_is_generic_sharable (method, FALSE)) {
4091 shared = mini_get_shared_method_full (method, SHARE_MODE_NONE, error);
4092 if (!is_ok (error)) {
4093 MONO_PROFILER_RAISE (jit_failed, (method));
4094 mono_destroy_compile (cfg);
4095 return NULL;
4096 }
4097 } else {
4098 shared = NULL;
4099 }
4100
4101 mono_domain_lock (target_domain);
4102
4103 /* Check if some other thread already did the job. In this case, we can
4104 discard the code this thread generated. */
4105
4106 info = mini_lookup_method (target_domain, method, shared);
4107 if (info) {
4108 /* We can't use a domain specific method in another domain */
4109 if ((target_domain == mono_domain_get ()) || info->domain_neutral) {
4110 code = info->code_start;
4111 discarded_code ++;
4112 discarded_jit_time += jit_time;
4113 }
4114 }
4115 if (code == NULL) {
4116 /* The lookup + insert is atomic since this is done inside the domain lock */
4117 mono_domain_jit_code_hash_lock (target_domain);
4118 mono_internal_hash_table_insert (&target_domain->jit_code_hash, cfg->jit_info->d.method, cfg->jit_info);
4119 mono_domain_jit_code_hash_unlock (target_domain);
4120
4121 code = cfg->native_code;
4122
4123 if (cfg->gshared && mono_method_is_generic_sharable (method, FALSE))
4124 mono_atomic_inc_i32 (&mono_stats.generics_shared_methods);
4125 if (cfg->gsharedvt)
4126 mono_atomic_inc_i32 (&mono_stats.gsharedvt_methods);
4127 }
4128
4129 jinfo = cfg->jit_info;
4130
4131 /*
4132 * Update global stats while holding a lock, instead of doing many
4133 * mono_atomic_inc_i32 operations during JITting.
4134 */
4135 mono_update_jit_stats (cfg);
4136
4137 mono_destroy_compile (cfg);
4138
4139 #ifndef DISABLE_JIT
4140 /* Update llvm callees */
4141 if (domain_jit_info (target_domain)->llvm_jit_callees) {
4142 GSList *callees = (GSList*)g_hash_table_lookup (domain_jit_info (target_domain)->llvm_jit_callees, method);
4143 GSList *l;
4144
4145 for (l = callees; l; l = l->next) {
4146 gpointer *addr = (gpointer*)l->data;
4147
4148 *addr = code;
4149 }
4150 }
4151
4152 mono_emit_jit_map (jinfo);
4153 #endif
4154 mono_domain_unlock (target_domain);
4155
4156 if (!mono_error_ok (error))
4157 return NULL;
4158
4159 vtable = mono_class_vtable_checked (target_domain, method->klass, error);
4160 return_val_if_nok (error, NULL);
4161
4162 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
4163 if (mono_marshal_method_from_wrapper (method)) {
4164 /* Native func wrappers have no method */
4165 /* The profiler doesn't know about wrappers, so pass the original icall method */
4166 MONO_PROFILER_RAISE (jit_done, (mono_marshal_method_from_wrapper (method), jinfo));
4167 }
4168 }
4169 MONO_PROFILER_RAISE (jit_done, (method, jinfo));
4170 if (prof_method != method)
4171 MONO_PROFILER_RAISE (jit_done, (prof_method, jinfo));
4172
4173 if (!(method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE ||
4174 method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK ||
4175 method->wrapper_type == MONO_WRAPPER_XDOMAIN_INVOKE)) {
4176 if (!mono_runtime_class_init_full (vtable, error))
4177 return NULL;
4178 }
4179 return code;
4180 }
4181
4182 /*
4183 * mini_get_underlying_type:
4184 *
4185 * Return the type the JIT will use during compilation.
4186 * Handles: byref, enums, native types, bool/char, ref types, generic sharing.
4187 * For gsharedvt types, it will return the original VAR/MVAR.
4188 */
4189 MonoType*
4190 mini_get_underlying_type (MonoType *type)
4191 {
4192 return mini_type_get_underlying_type (type);
4193 }
4194
4195 void
4196 mini_jit_init (void)
4197 {
4198 mono_counters_register ("Discarded method code", MONO_COUNTER_JIT | MONO_COUNTER_INT, &discarded_code);
4199 mono_counters_register ("Time spent JITting discarded code", MONO_COUNTER_JIT | MONO_COUNTER_LONG | MONO_COUNTER_TIME, &discarded_jit_time);
4200 mono_counters_register ("Try holes memory size", MONO_COUNTER_JIT | MONO_COUNTER_INT, &jinfo_try_holes_size);
4201
4202 mono_os_mutex_init_recursive (&jit_mutex);
4203 #ifndef DISABLE_JIT
4204 current_backend = g_new0 (MonoBackend, 1);
4205 init_backend (current_backend);
4206 #endif
4207 }
4208
4209 void
4210 mini_jit_cleanup (void)
4211 {
4212 #ifndef DISABLE_JIT
4213 g_free (emul_opcode_map);
4214 g_free (emul_opcode_opcodes);
4215 #endif
4216 }
4217
4218 #ifndef ENABLE_LLVM
4219 void
4220 mono_llvm_emit_aot_file_info (MonoAotFileInfo *info, gboolean has_jitted_code)
4221 {
4222 g_assert_not_reached ();
4223 }
4224
4225 void mono_llvm_emit_aot_data (const char *symbol, guint8 *data, int data_len)
4226 {
4227 g_assert_not_reached ();
4228 }
4229
4230 #endif
4231
4232 #if !defined(ENABLE_LLVM_RUNTIME) && !defined(ENABLE_LLVM)
4233
4234 void
4235 mono_llvm_cpp_throw_exception (void)
4236 {
4237 g_assert_not_reached ();
4238 }
4239
4240 void
4241 mono_llvm_cpp_catch_exception (MonoLLVMInvokeCallback cb, gpointer arg, gboolean *out_thrown)
4242 {
4243 g_assert_not_reached ();
4244 }
4245
4246 #endif
4247
4248 #ifdef DISABLE_JIT
4249
4250 MonoCompile*
4251 mini_method_compile (MonoMethod *method, guint32 opts, MonoDomain *domain, JitFlags flags, int parts, int aot_method_index)
4252 {
4253 g_assert_not_reached ();
4254 return NULL;
4255 }
4256
4257 void
4258 mono_destroy_compile (MonoCompile *cfg)
4259 {
4260 g_assert_not_reached ();
4261 }
4262
4263 void
4264 mono_add_patch_info (MonoCompile *cfg, int ip, MonoJumpInfoType type, gconstpointer target)
4265 {
4266 g_assert_not_reached ();
4267 }
4268
4269 #else // DISABLE_JIT
4270
4271 guint8*
4272 mini_realloc_code_slow (MonoCompile *cfg, int size)
4273 {
4274 const int EXTRA_CODE_SPACE = 16;
4275
4276 if (cfg->code_len + size > (cfg->code_size - EXTRA_CODE_SPACE)) {
4277 while (cfg->code_len + size > (cfg->code_size - EXTRA_CODE_SPACE))
4278 cfg->code_size = cfg->code_size * 2 + EXTRA_CODE_SPACE;
4279 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
4280 cfg->stat_code_reallocs++;
4281 }
4282 return cfg->native_code + cfg->code_len;
4283 }
4284
4285 #endif /* DISABLE_JIT */
4286
4287 gboolean
4288 mini_class_is_system_array (MonoClass *klass)
4289 {
4290 return m_class_get_parent (klass) == mono_defaults.array_class;
4291 }
4292
4293 /*
4294 * mono_target_pagesize:
4295 *
4296 * query pagesize used to determine if an implicit NRE can be used
4297 */
4298 int
4299 mono_target_pagesize (void)
4300 {
4301 /* We could query the system's pagesize via mono_pagesize (), however there
4302 * are pitfalls: sysconf (3) is called on some posix like systems, and per
4303 * POSIX.1-2008 this function doesn't have to be async-safe. Since this
4304 * function can be called from a signal handler, we simplify things by
4305 * using 4k on all targets. Implicit null-checks with an offset larger than
4306 * 4k are _very_ uncommon, so we don't mind emitting an explicit null-check
4307 * for those cases.
4308 */
4309 return 4 * 1024;
4310 }
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