2 * mini.c: The new Mono code generator.
5 * Paolo Molaro (lupus@ximian.com)
6 * Dietmar Maurer (dietmar@ximian.com)
8 * Copyright 2002-2003 Ximian, Inc.
9 * Copyright 2003-2010 Novell, Inc.
10 * Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
11 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
22 #ifdef HAVE_SYS_TIME_H
26 #include <mono/utils/memcheck.h>
28 #include <mono/metadata/assembly.h>
29 #include <mono/metadata/loader.h>
30 #include <mono/metadata/tabledefs.h>
31 #include <mono/metadata/class.h>
32 #include <mono/metadata/object.h>
33 #include <mono/metadata/tokentype.h>
34 #include <mono/metadata/tabledefs.h>
35 #include <mono/metadata/threads.h>
36 #include <mono/metadata/appdomain.h>
37 #include <mono/metadata/debug-helpers.h>
38 #include "mono/metadata/profiler.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/utils/mono-math.h>
51 #include <mono/utils/mono-compiler.h>
52 #include <mono/utils/mono-counters.h>
53 #include <mono/utils/mono-error-internals.h>
54 #include <mono/utils/mono-logger-internals.h>
55 #include <mono/utils/mono-mmap.h>
56 #include <mono/utils/mono-path.h>
57 #include <mono/utils/mono-tls.h>
58 #include <mono/utils/mono-hwcap.h>
59 #include <mono/utils/dtrace.h>
60 #include <mono/utils/mono-threads.h>
61 #include <mono/io-layer/io-layer.h>
64 #include "seq-points.h"
72 #include "jit-icalls.h"
75 #include "debugger-agent.h"
76 #include "llvm-runtime.h"
77 #include "mini-llvm.h"
79 MonoTraceSpec *mono_jit_trace_calls;
80 MonoMethodDesc *mono_inject_async_exc_method;
81 int mono_inject_async_exc_pos;
82 MonoMethodDesc *mono_break_at_bb_method;
83 int mono_break_at_bb_bb_num;
84 gboolean mono_do_x86_stack_align = TRUE;
85 gboolean mono_using_xdebug;
87 #define mono_jit_lock() mono_os_mutex_lock (&jit_mutex)
88 #define mono_jit_unlock() mono_os_mutex_unlock (&jit_mutex)
89 static mono_mutex_t jit_mutex;
91 MonoBackend *current_backend;
96 mono_realloc_native_code (MonoCompile *cfg)
98 #if defined(__default_codegen__)
99 return g_realloc (cfg->native_code, cfg->code_size);
100 #elif defined(__native_client_codegen__)
102 gpointer native_code;
103 guint alignment_check;
105 /* Save the old alignment offset so we can re-align after the realloc. */
106 old_padding = (guint)(cfg->native_code - cfg->native_code_alloc);
107 cfg->code_size = NACL_BUNDLE_ALIGN_UP (cfg->code_size);
109 cfg->native_code_alloc = g_realloc ( cfg->native_code_alloc,
110 cfg->code_size + kNaClAlignment );
112 /* Align native_code to next nearest kNaClAlignment byte. */
113 native_code = (guint)cfg->native_code_alloc + kNaClAlignment;
114 native_code = (guint)native_code & ~kNaClAlignmentMask;
116 /* Shift the data to be 32-byte aligned again. */
117 memmove (native_code, cfg->native_code_alloc + old_padding, cfg->code_size);
119 alignment_check = (guint)native_code & kNaClAlignmentMask;
120 g_assert (alignment_check == 0);
123 g_assert_not_reached ();
124 return cfg->native_code;
128 #ifdef __native_client_codegen__
130 /* Prevent instructions from straddling a 32-byte alignment boundary. */
131 /* Instructions longer than 32 bytes must be aligned internally. */
132 /* IN: pcode, instlen */
134 void mono_nacl_align_inst(guint8 **pcode, int instlen) {
137 space_in_block = kNaClAlignment - ((uintptr_t)(*pcode) & kNaClAlignmentMask);
139 if (G_UNLIKELY (instlen >= kNaClAlignment)) {
140 g_assert_not_reached();
141 } else if (instlen > space_in_block) {
142 *pcode = mono_arch_nacl_pad(*pcode, space_in_block);
146 /* Move emitted call sequence to the end of a kNaClAlignment-byte block. */
147 /* IN: start pointer to start of call sequence */
148 /* IN: pcode pointer to end of call sequence (current "IP") */
149 /* OUT: start pointer to the start of the call sequence after padding */
150 /* OUT: pcode pointer to the end of the call sequence after padding */
151 void mono_nacl_align_call(guint8 **start, guint8 **pcode) {
152 const size_t MAX_NACL_CALL_LENGTH = kNaClAlignment;
153 guint8 copy_of_call[MAX_NACL_CALL_LENGTH];
156 const size_t length = (size_t)((*pcode)-(*start));
157 g_assert(length < MAX_NACL_CALL_LENGTH);
159 memcpy(copy_of_call, *start, length);
160 temp = mono_nacl_pad_call(*start, (guint8)length);
161 memcpy(temp, copy_of_call, length);
163 (*pcode) = temp + length;
166 /* mono_nacl_pad_call(): Insert padding for Native Client call instructions */
167 /* code pointer to buffer for emitting code */
168 /* ilength length of call instruction */
169 guint8 *mono_nacl_pad_call(guint8 *code, guint8 ilength) {
170 int freeSpaceInBlock = kNaClAlignment - ((uintptr_t)code & kNaClAlignmentMask);
171 int padding = freeSpaceInBlock - ilength;
174 /* There isn't enough space in this block for the instruction. */
175 /* Fill this block and start a new one. */
176 code = mono_arch_nacl_pad(code, freeSpaceInBlock);
177 freeSpaceInBlock = kNaClAlignment;
178 padding = freeSpaceInBlock - ilength;
180 g_assert(ilength > 0);
181 g_assert(padding >= 0);
182 g_assert(padding < kNaClAlignment);
183 if (0 == padding) return code;
184 return mono_arch_nacl_pad(code, padding);
187 guint8 *mono_nacl_align(guint8 *code) {
188 int padding = kNaClAlignment - ((uintptr_t)code & kNaClAlignmentMask);
189 if (padding != kNaClAlignment) code = mono_arch_nacl_pad(code, padding);
193 void mono_nacl_fix_patches(const guint8 *code, MonoJumpInfo *ji)
195 #ifndef USE_JUMP_TABLES
196 MonoJumpInfo *patch_info;
197 for (patch_info = ji; patch_info; patch_info = patch_info->next) {
198 unsigned char *ip = patch_info->ip.i + code;
199 ip = mono_arch_nacl_skip_nops(ip);
200 patch_info->ip.i = ip - code;
204 #endif /* __native_client_codegen__ */
206 #ifdef USE_JUMP_TABLES
208 #define DEFAULT_JUMPTABLE_CHUNK_ELEMENTS 128
210 typedef struct MonoJumpTableChunk {
213 struct MonoJumpTableChunk *previous;
214 /* gpointer entries[total]; */
215 } MonoJumpTableChunk;
217 static MonoJumpTableChunk* g_jumptable;
218 #define mono_jumptable_lock() mono_os_mutex_lock (&jumptable_mutex)
219 #define mono_jumptable_unlock() mono_os_mutex_unlock (&jumptable_mutex)
220 static mono_mutex_t jumptable_mutex;
222 static MonoJumpTableChunk*
223 mono_create_jumptable_chunk (guint32 max_entries)
225 guint32 size = sizeof (MonoJumpTableChunk) + max_entries * sizeof(gpointer);
226 MonoJumpTableChunk *chunk = (MonoJumpTableChunk*) g_new0 (guchar, size);
227 chunk->total = max_entries;
232 mono_jumptable_init (void)
234 if (g_jumptable == NULL) {
235 mono_os_mutex_init_recursive (&jumptable_mutex);
236 g_jumptable = mono_create_jumptable_chunk (DEFAULT_JUMPTABLE_CHUNK_ELEMENTS);
241 mono_jumptable_add_entry (void)
243 return mono_jumptable_add_entries (1);
247 mono_jumptable_add_entries (guint32 entries)
252 mono_jumptable_init ();
253 mono_jumptable_lock ();
254 index = g_jumptable->active;
255 if (index + entries >= g_jumptable->total) {
257 * Grow jumptable, by adding one more chunk.
258 * We cannot realloc jumptable, as there could be pointers
259 * to existing jump table entries in the code, so instead
260 * we just add one more chunk.
262 guint32 max_entries = entries;
263 MonoJumpTableChunk *new_chunk;
265 if (max_entries < DEFAULT_JUMPTABLE_CHUNK_ELEMENTS)
266 max_entries = DEFAULT_JUMPTABLE_CHUNK_ELEMENTS;
267 new_chunk = mono_create_jumptable_chunk (max_entries);
268 /* Link old jumptable, so that we could free it up later. */
269 new_chunk->previous = g_jumptable;
270 g_jumptable = new_chunk;
273 g_jumptable->active = index + entries;
274 result = (gpointer*)((guchar*)g_jumptable + sizeof(MonoJumpTableChunk)) + index;
275 mono_jumptable_unlock();
281 mono_jumptable_cleanup (void)
284 MonoJumpTableChunk *current = g_jumptable, *prev;
285 while (current != NULL) {
286 prev = current->previous;
291 mono_os_mutex_destroy (&jumptable_mutex);
296 mono_jumptable_get_entry (guint8 *code_ptr)
298 return mono_arch_jumptable_entry_from_code (code_ptr);
301 #endif /* USE_JUMP_TABLES */
304 MonoExceptionClause *clause;
305 MonoBasicBlock *basic_block;
310 * mono_emit_unwind_op:
312 * Add an unwind op with the given parameters for the list of unwind ops stored in
316 mono_emit_unwind_op (MonoCompile *cfg, int when, int tag, int reg, int val)
318 MonoUnwindOp *op = (MonoUnwindOp *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoUnwindOp));
325 cfg->unwind_ops = g_slist_append_mempool (cfg->mempool, cfg->unwind_ops, op);
326 if (cfg->verbose_level > 1) {
329 printf ("CFA: [%x] def_cfa: %s+0x%x\n", when, mono_arch_regname (reg), val);
331 case DW_CFA_def_cfa_register:
332 printf ("CFA: [%x] def_cfa_reg: %s\n", when, mono_arch_regname (reg));
334 case DW_CFA_def_cfa_offset:
335 printf ("CFA: [%x] def_cfa_offset: 0x%x\n", when, val);
338 printf ("CFA: [%x] offset: %s at cfa-0x%x\n", when, mono_arch_regname (reg), -val);
344 #define MONO_INIT_VARINFO(vi,id) do { \
345 (vi)->range.first_use.pos.bid = 0xffff; \
351 * mono_unlink_bblock:
353 * Unlink two basic blocks.
356 mono_unlink_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
362 for (i = 0; i < from->out_count; ++i) {
363 if (to == from->out_bb [i]) {
370 for (i = 0; i < from->out_count; ++i) {
371 if (from->out_bb [i] != to)
372 from->out_bb [pos ++] = from->out_bb [i];
374 g_assert (pos == from->out_count - 1);
379 for (i = 0; i < to->in_count; ++i) {
380 if (from == to->in_bb [i]) {
387 for (i = 0; i < to->in_count; ++i) {
388 if (to->in_bb [i] != from)
389 to->in_bb [pos ++] = to->in_bb [i];
391 g_assert (pos == to->in_count - 1);
397 * mono_bblocks_linked:
399 * Return whenever BB1 and BB2 are linked in the CFG.
402 mono_bblocks_linked (MonoBasicBlock *bb1, MonoBasicBlock *bb2)
406 for (i = 0; i < bb1->out_count; ++i) {
407 if (bb1->out_bb [i] == bb2)
415 mono_find_block_region_notry (MonoCompile *cfg, int offset)
417 MonoMethodHeader *header = cfg->header;
418 MonoExceptionClause *clause;
421 for (i = 0; i < header->num_clauses; ++i) {
422 clause = &header->clauses [i];
423 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
424 (offset < (clause->handler_offset)))
425 return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
427 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
428 if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
429 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
430 else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
431 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
433 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
441 * mono_get_block_region_notry:
443 * Return the region corresponding to REGION, ignoring try clauses nested inside
447 mono_get_block_region_notry (MonoCompile *cfg, int region)
449 if ((region & (0xf << 4)) == MONO_REGION_TRY) {
450 MonoMethodHeader *header = cfg->header;
453 * This can happen if a try clause is nested inside a finally clause.
455 int clause_index = (region >> 8) - 1;
456 g_assert (clause_index >= 0 && clause_index < header->num_clauses);
458 region = mono_find_block_region_notry (cfg, header->clauses [clause_index].try_offset);
465 mono_find_spvar_for_region (MonoCompile *cfg, int region)
467 region = mono_get_block_region_notry (cfg, region);
469 return (MonoInst *)g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
473 df_visit (MonoBasicBlock *start, int *dfn, MonoBasicBlock **array)
477 array [*dfn] = start;
478 /* g_print ("visit %d at %p (BB%ld)\n", *dfn, start->cil_code, start->block_num); */
479 for (i = 0; i < start->out_count; ++i) {
480 if (start->out_bb [i]->dfn)
483 start->out_bb [i]->dfn = *dfn;
484 start->out_bb [i]->df_parent = start;
485 array [*dfn] = start->out_bb [i];
486 df_visit (start->out_bb [i], dfn, array);
491 mono_reverse_branch_op (guint32 opcode)
493 static const int reverse_map [] = {
494 CEE_BNE_UN, CEE_BLT, CEE_BLE, CEE_BGT, CEE_BGE,
495 CEE_BEQ, CEE_BLT_UN, CEE_BLE_UN, CEE_BGT_UN, CEE_BGE_UN
497 static const int reverse_fmap [] = {
498 OP_FBNE_UN, OP_FBLT, OP_FBLE, OP_FBGT, OP_FBGE,
499 OP_FBEQ, OP_FBLT_UN, OP_FBLE_UN, OP_FBGT_UN, OP_FBGE_UN
501 static const int reverse_lmap [] = {
502 OP_LBNE_UN, OP_LBLT, OP_LBLE, OP_LBGT, OP_LBGE,
503 OP_LBEQ, OP_LBLT_UN, OP_LBLE_UN, OP_LBGT_UN, OP_LBGE_UN
505 static const int reverse_imap [] = {
506 OP_IBNE_UN, OP_IBLT, OP_IBLE, OP_IBGT, OP_IBGE,
507 OP_IBEQ, OP_IBLT_UN, OP_IBLE_UN, OP_IBGT_UN, OP_IBGE_UN
510 if (opcode >= CEE_BEQ && opcode <= CEE_BLT_UN) {
511 opcode = reverse_map [opcode - CEE_BEQ];
512 } else if (opcode >= OP_FBEQ && opcode <= OP_FBLT_UN) {
513 opcode = reverse_fmap [opcode - OP_FBEQ];
514 } else if (opcode >= OP_LBEQ && opcode <= OP_LBLT_UN) {
515 opcode = reverse_lmap [opcode - OP_LBEQ];
516 } else if (opcode >= OP_IBEQ && opcode <= OP_IBLT_UN) {
517 opcode = reverse_imap [opcode - OP_IBEQ];
519 g_assert_not_reached ();
525 mono_type_to_store_membase (MonoCompile *cfg, MonoType *type)
527 type = mini_get_underlying_type (type);
530 switch (type->type) {
533 return OP_STOREI1_MEMBASE_REG;
536 return OP_STOREI2_MEMBASE_REG;
539 return OP_STOREI4_MEMBASE_REG;
543 case MONO_TYPE_FNPTR:
544 return OP_STORE_MEMBASE_REG;
545 case MONO_TYPE_CLASS:
546 case MONO_TYPE_STRING:
547 case MONO_TYPE_OBJECT:
548 case MONO_TYPE_SZARRAY:
549 case MONO_TYPE_ARRAY:
550 return OP_STORE_MEMBASE_REG;
553 return OP_STOREI8_MEMBASE_REG;
555 return OP_STORER4_MEMBASE_REG;
557 return OP_STORER8_MEMBASE_REG;
558 case MONO_TYPE_VALUETYPE:
559 if (type->data.klass->enumtype) {
560 type = mono_class_enum_basetype (type->data.klass);
563 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
564 return OP_STOREX_MEMBASE;
565 return OP_STOREV_MEMBASE;
566 case MONO_TYPE_TYPEDBYREF:
567 return OP_STOREV_MEMBASE;
568 case MONO_TYPE_GENERICINST:
569 type = &type->data.generic_class->container_class->byval_arg;
573 g_assert (mini_type_var_is_vt (type));
574 return OP_STOREV_MEMBASE;
576 g_error ("unknown type 0x%02x in type_to_store_membase", type->type);
582 mono_type_to_load_membase (MonoCompile *cfg, MonoType *type)
584 type = mini_get_underlying_type (type);
586 switch (type->type) {
588 return OP_LOADI1_MEMBASE;
590 return OP_LOADU1_MEMBASE;
592 return OP_LOADI2_MEMBASE;
594 return OP_LOADU2_MEMBASE;
596 return OP_LOADI4_MEMBASE;
598 return OP_LOADU4_MEMBASE;
602 case MONO_TYPE_FNPTR:
603 return OP_LOAD_MEMBASE;
604 case MONO_TYPE_CLASS:
605 case MONO_TYPE_STRING:
606 case MONO_TYPE_OBJECT:
607 case MONO_TYPE_SZARRAY:
608 case MONO_TYPE_ARRAY:
609 return OP_LOAD_MEMBASE;
612 return OP_LOADI8_MEMBASE;
614 return OP_LOADR4_MEMBASE;
616 return OP_LOADR8_MEMBASE;
617 case MONO_TYPE_VALUETYPE:
618 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
619 return OP_LOADX_MEMBASE;
620 case MONO_TYPE_TYPEDBYREF:
621 return OP_LOADV_MEMBASE;
622 case MONO_TYPE_GENERICINST:
623 if (mono_type_generic_inst_is_valuetype (type))
624 return OP_LOADV_MEMBASE;
626 return OP_LOAD_MEMBASE;
630 g_assert (cfg->gshared);
631 g_assert (mini_type_var_is_vt (type));
632 return OP_LOADV_MEMBASE;
634 g_error ("unknown type 0x%02x in type_to_load_membase", type->type);
640 mini_type_to_stind (MonoCompile* cfg, MonoType *type)
642 type = mini_get_underlying_type (type);
643 if (cfg->gshared && !type->byref && (type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR)) {
644 g_assert (mini_type_var_is_vt (type));
647 return mono_type_to_stind (type);
651 mono_op_imm_to_op (int opcode)
655 #if SIZEOF_REGISTER == 4
673 #if SIZEOF_REGISTER == 4
679 #if SIZEOF_REGISTER == 4
685 #if SIZEOF_REGISTER == 4
731 #if SIZEOF_REGISTER == 4
737 #if SIZEOF_REGISTER == 4
756 case OP_ICOMPARE_IMM:
758 case OP_LOCALLOC_IMM:
766 * mono_decompose_op_imm:
768 * Replace the OP_.._IMM INS with its non IMM variant.
771 mono_decompose_op_imm (MonoCompile *cfg, MonoBasicBlock *bb, MonoInst *ins)
773 int opcode2 = mono_op_imm_to_op (ins->opcode);
776 const char *spec = INS_INFO (ins->opcode);
778 if (spec [MONO_INST_SRC2] == 'l') {
779 dreg = mono_alloc_lreg (cfg);
781 /* Load the 64bit constant using decomposed ops */
782 MONO_INST_NEW (cfg, temp, OP_ICONST);
783 temp->inst_c0 = ins->inst_ls_word;
784 temp->dreg = MONO_LVREG_LS (dreg);
785 mono_bblock_insert_before_ins (bb, ins, temp);
787 MONO_INST_NEW (cfg, temp, OP_ICONST);
788 temp->inst_c0 = ins->inst_ms_word;
789 temp->dreg = MONO_LVREG_MS (dreg);
791 dreg = mono_alloc_ireg (cfg);
793 MONO_INST_NEW (cfg, temp, OP_ICONST);
794 temp->inst_c0 = ins->inst_imm;
798 mono_bblock_insert_before_ins (bb, ins, temp);
801 g_error ("mono_op_imm_to_op failed for %s\n", mono_inst_name (ins->opcode));
802 ins->opcode = opcode2;
804 if (ins->opcode == OP_LOCALLOC)
809 bb->max_vreg = MAX (bb->max_vreg, cfg->next_vreg);
813 set_vreg_to_inst (MonoCompile *cfg, int vreg, MonoInst *inst)
815 if (vreg >= cfg->vreg_to_inst_len) {
816 MonoInst **tmp = cfg->vreg_to_inst;
817 int size = cfg->vreg_to_inst_len;
819 while (vreg >= cfg->vreg_to_inst_len)
820 cfg->vreg_to_inst_len = cfg->vreg_to_inst_len ? cfg->vreg_to_inst_len * 2 : 32;
821 cfg->vreg_to_inst = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * cfg->vreg_to_inst_len);
823 memcpy (cfg->vreg_to_inst, tmp, size * sizeof (MonoInst*));
825 cfg->vreg_to_inst [vreg] = inst;
828 #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)))
829 #define mono_type_is_float(type) (!(type)->byref && (((type)->type == MONO_TYPE_R8) || ((type)->type == MONO_TYPE_R4)))
832 mono_compile_create_var_for_vreg (MonoCompile *cfg, MonoType *type, int opcode, int vreg)
835 int num = cfg->num_varinfo;
838 type = mini_get_underlying_type (type);
840 if ((num + 1) >= cfg->varinfo_count) {
841 int orig_count = cfg->varinfo_count;
842 cfg->varinfo_count = cfg->varinfo_count ? (cfg->varinfo_count * 2) : 32;
843 cfg->varinfo = (MonoInst **)g_realloc (cfg->varinfo, sizeof (MonoInst*) * cfg->varinfo_count);
844 cfg->vars = (MonoMethodVar *)g_realloc (cfg->vars, sizeof (MonoMethodVar) * cfg->varinfo_count);
845 memset (&cfg->vars [orig_count], 0, (cfg->varinfo_count - orig_count) * sizeof (MonoMethodVar));
848 cfg->stat_allocate_var++;
850 MONO_INST_NEW (cfg, inst, opcode);
852 inst->inst_vtype = type;
853 inst->klass = mono_class_from_mono_type (type);
854 type_to_eval_stack_type (cfg, type, inst);
855 /* if set to 1 the variable is native */
856 inst->backend.is_pinvoke = 0;
859 if (mono_class_has_failure (inst->klass))
860 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
862 if (cfg->compute_gc_maps) {
864 mono_mark_vreg_as_mp (cfg, vreg);
866 if ((MONO_TYPE_ISSTRUCT (type) && inst->klass->has_references) || mini_type_is_reference (type)) {
867 inst->flags |= MONO_INST_GC_TRACK;
868 mono_mark_vreg_as_ref (cfg, vreg);
873 cfg->varinfo [num] = inst;
875 MONO_INIT_VARINFO (&cfg->vars [num], num);
876 MONO_VARINFO (cfg, num)->vreg = vreg;
879 set_vreg_to_inst (cfg, vreg, inst);
881 #if SIZEOF_REGISTER == 4
882 if (mono_arch_is_soft_float ()) {
883 regpair = mono_type_is_long (type) || mono_type_is_float (type);
885 regpair = mono_type_is_long (type);
895 * These two cannot be allocated using create_var_for_vreg since that would
896 * put it into the cfg->varinfo array, confusing many parts of the JIT.
900 * Set flags to VOLATILE so SSA skips it.
903 if (cfg->verbose_level >= 4) {
904 printf (" Create LVAR R%d (R%d, R%d)\n", inst->dreg, MONO_LVREG_LS (inst->dreg), MONO_LVREG_MS (inst->dreg));
907 if (mono_arch_is_soft_float () && cfg->opt & MONO_OPT_SSA) {
908 if (mono_type_is_float (type))
909 inst->flags = MONO_INST_VOLATILE;
912 /* Allocate a dummy MonoInst for the first vreg */
913 MONO_INST_NEW (cfg, tree, OP_LOCAL);
914 tree->dreg = MONO_LVREG_LS (inst->dreg);
915 if (cfg->opt & MONO_OPT_SSA)
916 tree->flags = MONO_INST_VOLATILE;
918 tree->type = STACK_I4;
919 tree->inst_vtype = &mono_defaults.int32_class->byval_arg;
920 tree->klass = mono_class_from_mono_type (tree->inst_vtype);
922 set_vreg_to_inst (cfg, MONO_LVREG_LS (inst->dreg), tree);
924 /* Allocate a dummy MonoInst for the second vreg */
925 MONO_INST_NEW (cfg, tree, OP_LOCAL);
926 tree->dreg = MONO_LVREG_MS (inst->dreg);
927 if (cfg->opt & MONO_OPT_SSA)
928 tree->flags = MONO_INST_VOLATILE;
930 tree->type = STACK_I4;
931 tree->inst_vtype = &mono_defaults.int32_class->byval_arg;
932 tree->klass = mono_class_from_mono_type (tree->inst_vtype);
934 set_vreg_to_inst (cfg, MONO_LVREG_MS (inst->dreg), tree);
938 if (cfg->verbose_level > 2)
939 g_print ("created temp %d (R%d) of type %s\n", num, vreg, mono_type_get_name (type));
944 mono_compile_create_var (MonoCompile *cfg, MonoType *type, int opcode)
947 type = mini_get_underlying_type (type);
949 if (mono_type_is_long (type))
950 dreg = mono_alloc_dreg (cfg, STACK_I8);
951 else if (mono_arch_is_soft_float () && mono_type_is_float (type))
952 dreg = mono_alloc_dreg (cfg, STACK_R8);
954 /* All the others are unified */
955 dreg = mono_alloc_preg (cfg);
957 return mono_compile_create_var_for_vreg (cfg, type, opcode, dreg);
961 mini_get_int_to_float_spill_area (MonoCompile *cfg)
964 if (!cfg->iconv_raw_var) {
965 cfg->iconv_raw_var = mono_compile_create_var (cfg, &mono_defaults.int32_class->byval_arg, OP_LOCAL);
966 cfg->iconv_raw_var->flags |= MONO_INST_VOLATILE; /*FIXME, use the don't regalloc flag*/
968 return cfg->iconv_raw_var;
975 mono_mark_vreg_as_ref (MonoCompile *cfg, int vreg)
977 if (vreg >= cfg->vreg_is_ref_len) {
978 gboolean *tmp = cfg->vreg_is_ref;
979 int size = cfg->vreg_is_ref_len;
981 while (vreg >= cfg->vreg_is_ref_len)
982 cfg->vreg_is_ref_len = cfg->vreg_is_ref_len ? cfg->vreg_is_ref_len * 2 : 32;
983 cfg->vreg_is_ref = (gboolean *)mono_mempool_alloc0 (cfg->mempool, sizeof (gboolean) * cfg->vreg_is_ref_len);
985 memcpy (cfg->vreg_is_ref, tmp, size * sizeof (gboolean));
987 cfg->vreg_is_ref [vreg] = TRUE;
991 mono_mark_vreg_as_mp (MonoCompile *cfg, int vreg)
993 if (vreg >= cfg->vreg_is_mp_len) {
994 gboolean *tmp = cfg->vreg_is_mp;
995 int size = cfg->vreg_is_mp_len;
997 while (vreg >= cfg->vreg_is_mp_len)
998 cfg->vreg_is_mp_len = cfg->vreg_is_mp_len ? cfg->vreg_is_mp_len * 2 : 32;
999 cfg->vreg_is_mp = (gboolean *)mono_mempool_alloc0 (cfg->mempool, sizeof (gboolean) * cfg->vreg_is_mp_len);
1001 memcpy (cfg->vreg_is_mp, tmp, size * sizeof (gboolean));
1003 cfg->vreg_is_mp [vreg] = TRUE;
1007 type_from_stack_type (MonoInst *ins)
1009 switch (ins->type) {
1010 case STACK_I4: return &mono_defaults.int32_class->byval_arg;
1011 case STACK_I8: return &mono_defaults.int64_class->byval_arg;
1012 case STACK_PTR: return &mono_defaults.int_class->byval_arg;
1013 case STACK_R8: return &mono_defaults.double_class->byval_arg;
1016 * this if used to be commented without any specific reason, but
1017 * it breaks #80235 when commented
1020 return &ins->klass->this_arg;
1022 return &mono_defaults.object_class->this_arg;
1024 /* ins->klass may not be set for ldnull.
1025 * Also, if we have a boxed valuetype, we want an object lass,
1026 * not the valuetype class
1028 if (ins->klass && !ins->klass->valuetype)
1029 return &ins->klass->byval_arg;
1030 return &mono_defaults.object_class->byval_arg;
1031 case STACK_VTYPE: return &ins->klass->byval_arg;
1033 g_error ("stack type %d to montype not handled\n", ins->type);
1039 mono_type_from_stack_type (MonoInst *ins)
1041 return type_from_stack_type (ins);
1045 * mono_add_ins_to_end:
1047 * Same as MONO_ADD_INS, but add INST before any branches at the end of BB.
1050 mono_add_ins_to_end (MonoBasicBlock *bb, MonoInst *inst)
1055 MONO_ADD_INS (bb, inst);
1059 switch (bb->last_ins->opcode) {
1073 mono_bblock_insert_before_ins (bb, bb->last_ins, inst);
1076 if (MONO_IS_COND_BRANCH_OP (bb->last_ins)) {
1077 /* Need to insert the ins before the compare */
1078 if (bb->code == bb->last_ins) {
1079 mono_bblock_insert_before_ins (bb, bb->last_ins, inst);
1083 if (bb->code->next == bb->last_ins) {
1084 /* Only two instructions */
1085 opcode = bb->code->opcode;
1087 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)) {
1089 mono_bblock_insert_before_ins (bb, bb->code, inst);
1091 mono_bblock_insert_before_ins (bb, bb->last_ins, inst);
1094 opcode = bb->last_ins->prev->opcode;
1096 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)) {
1098 mono_bblock_insert_before_ins (bb, bb->last_ins->prev, inst);
1100 mono_bblock_insert_before_ins (bb, bb->last_ins, inst);
1105 MONO_ADD_INS (bb, inst);
1111 mono_create_jump_table (MonoCompile *cfg, MonoInst *label, MonoBasicBlock **bbs, int num_blocks)
1113 MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfo));
1114 MonoJumpInfoBBTable *table;
1116 table = (MonoJumpInfoBBTable *)mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
1118 table->table_size = num_blocks;
1120 ji->ip.label = label;
1121 ji->type = MONO_PATCH_INFO_SWITCH;
1122 ji->data.table = table;
1123 ji->next = cfg->patch_info;
1124 cfg->patch_info = ji;
1127 static MonoMethodSignature *
1128 mono_get_array_new_va_signature (int arity)
1130 static GHashTable *sighash;
1131 MonoMethodSignature *res;
1136 sighash = g_hash_table_new (NULL, NULL);
1138 else if ((res = (MonoMethodSignature *)g_hash_table_lookup (sighash, GINT_TO_POINTER (arity)))) {
1143 res = mono_metadata_signature_alloc (mono_defaults.corlib, arity + 1);
1146 if (ARCH_VARARG_ICALLS)
1147 /* Only set this only some archs since not all backends can handle varargs+pinvoke */
1148 res->call_convention = MONO_CALL_VARARG;
1151 res->call_convention = MONO_CALL_C;
1154 res->params [0] = &mono_defaults.int_class->byval_arg;
1155 for (i = 0; i < arity; i++)
1156 res->params [i + 1] = &mono_defaults.int_class->byval_arg;
1158 res->ret = &mono_defaults.object_class->byval_arg;
1160 g_hash_table_insert (sighash, GINT_TO_POINTER (arity), res);
1167 mono_get_array_new_va_icall (int rank)
1169 MonoMethodSignature *esig;
1170 char icall_name [256];
1172 MonoJitICallInfo *info;
1174 /* Need to register the icall so it gets an icall wrapper */
1175 sprintf (icall_name, "ves_array_new_va_%d", rank);
1178 info = mono_find_jit_icall_by_name (icall_name);
1180 esig = mono_get_array_new_va_signature (rank);
1181 name = g_strdup (icall_name);
1182 info = mono_register_jit_icall (mono_array_new_va, name, esig, FALSE);
1190 mini_class_is_system_array (MonoClass *klass)
1192 if (klass->parent == mono_defaults.array_class)
1199 mini_assembly_can_skip_verification (MonoDomain *domain, MonoMethod *method)
1201 MonoAssembly *assembly = method->klass->image->assembly;
1202 if (method->wrapper_type != MONO_WRAPPER_NONE && method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
1204 if (assembly->in_gac || assembly->image == mono_defaults.corlib)
1206 return mono_assembly_has_skip_verification (assembly);
1210 * mini_method_verify:
1212 * Verify the method using the verfier.
1214 * Returns true if the method is invalid.
1217 mini_method_verify (MonoCompile *cfg, MonoMethod *method, gboolean fail_compile)
1220 gboolean is_fulltrust;
1222 if (method->verification_success)
1225 if (!mono_verifier_is_enabled_for_method (method))
1228 /*skip verification implies the assembly must be */
1229 is_fulltrust = mono_verifier_is_method_full_trust (method) || mini_assembly_can_skip_verification (cfg->domain, method);
1231 res = mono_method_verify_with_current_settings (method, cfg->skip_visibility, is_fulltrust);
1234 for (tmp = res; tmp; tmp = tmp->next) {
1235 MonoVerifyInfoExtended *info = (MonoVerifyInfoExtended *)tmp->data;
1236 if (info->info.status == MONO_VERIFY_ERROR) {
1238 char *method_name = mono_method_full_name (method, TRUE);
1239 cfg->exception_type = info->exception_type;
1240 cfg->exception_message = g_strdup_printf ("Error verifying %s: %s", method_name, info->info.message);
1241 g_free (method_name);
1243 mono_free_verify_list (res);
1246 if (info->info.status == MONO_VERIFY_NOT_VERIFIABLE && (!is_fulltrust || info->exception_type == MONO_EXCEPTION_METHOD_ACCESS || info->exception_type == MONO_EXCEPTION_FIELD_ACCESS)) {
1248 char *method_name = mono_method_full_name (method, TRUE);
1249 char *msg = g_strdup_printf ("Error verifying %s: %s", method_name, info->info.message);
1251 if (info->exception_type == MONO_EXCEPTION_METHOD_ACCESS)
1252 mono_error_set_generic_error (&cfg->error, "System", "MethodAccessException", "%s", msg);
1253 else if (info->exception_type == MONO_EXCEPTION_FIELD_ACCESS)
1254 mono_error_set_generic_error (&cfg->error, "System", "FieldAccessException", "%s", msg);
1255 else if (info->exception_type == MONO_EXCEPTION_UNVERIFIABLE_IL)
1256 mono_error_set_generic_error (&cfg->error, "System.Security", "VerificationException", msg);
1257 if (!mono_error_ok (&cfg->error)) {
1258 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
1261 cfg->exception_type = info->exception_type;
1262 cfg->exception_message = msg;
1264 g_free (method_name);
1266 mono_free_verify_list (res);
1270 mono_free_verify_list (res);
1272 method->verification_success = 1;
1276 /*Returns true if something went wrong*/
1278 mono_compile_is_broken (MonoCompile *cfg, MonoMethod *method, gboolean fail_compile)
1280 MonoMethod *method_definition = method;
1281 gboolean dont_verify = method->klass->image->assembly->corlib_internal;
1283 while (method_definition->is_inflated) {
1284 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
1285 method_definition = imethod->declaring;
1288 return !dont_verify && mini_method_verify (cfg, method_definition, fail_compile);
1292 mono_dynamic_code_hash_insert (MonoDomain *domain, MonoMethod *method, MonoJitDynamicMethodInfo *ji)
1294 if (!domain_jit_info (domain)->dynamic_code_hash)
1295 domain_jit_info (domain)->dynamic_code_hash = g_hash_table_new (NULL, NULL);
1296 g_hash_table_insert (domain_jit_info (domain)->dynamic_code_hash, method, ji);
1299 static MonoJitDynamicMethodInfo*
1300 mono_dynamic_code_hash_lookup (MonoDomain *domain, MonoMethod *method)
1302 MonoJitDynamicMethodInfo *res;
1304 if (domain_jit_info (domain)->dynamic_code_hash)
1305 res = (MonoJitDynamicMethodInfo *)g_hash_table_lookup (domain_jit_info (domain)->dynamic_code_hash, method);
1313 GList *active, *inactive;
1318 compare_by_interval_start_pos_func (gconstpointer a, gconstpointer b)
1320 MonoMethodVar *v1 = (MonoMethodVar*)a;
1321 MonoMethodVar *v2 = (MonoMethodVar*)b;
1325 else if (v1->interval->range && v2->interval->range)
1326 return v1->interval->range->from - v2->interval->range->from;
1327 else if (v1->interval->range)
1334 #define LSCAN_DEBUG(a) do { a; } while (0)
1336 #define LSCAN_DEBUG(a)
1340 mono_allocate_stack_slots2 (MonoCompile *cfg, gboolean backward, guint32 *stack_size, guint32 *stack_align)
1342 int i, slot, offset, size;
1347 GList *vars = NULL, *l, *unhandled;
1348 StackSlotInfo *scalar_stack_slots, *vtype_stack_slots, *slot_info;
1351 gboolean reuse_slot;
1353 LSCAN_DEBUG (printf ("Allocate Stack Slots 2 for %s:\n", mono_method_full_name (cfg->method, TRUE)));
1355 scalar_stack_slots = (StackSlotInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (StackSlotInfo) * MONO_TYPE_PINNED);
1356 vtype_stack_slots = NULL;
1359 offsets = (gint32 *)mono_mempool_alloc (cfg->mempool, sizeof (gint32) * cfg->num_varinfo);
1360 for (i = 0; i < cfg->num_varinfo; ++i)
1363 for (i = cfg->locals_start; i < cfg->num_varinfo; i++) {
1364 inst = cfg->varinfo [i];
1365 vmv = MONO_VARINFO (cfg, i);
1367 if ((inst->flags & MONO_INST_IS_DEAD) || inst->opcode == OP_REGVAR || inst->opcode == OP_REGOFFSET)
1370 vars = g_list_prepend (vars, vmv);
1373 vars = g_list_sort (g_list_copy (vars), compare_by_interval_start_pos_func);
1378 for (unhandled = vars; unhandled; unhandled = unhandled->next) {
1379 MonoMethodVar *current = unhandled->data;
1381 if (current->interval->range) {
1382 g_assert (current->interval->range->from >= i);
1383 i = current->interval->range->from;
1390 for (unhandled = vars; unhandled; unhandled = unhandled->next) {
1391 MonoMethodVar *current = (MonoMethodVar *)unhandled->data;
1394 inst = cfg->varinfo [vmv->idx];
1396 t = mono_type_get_underlying_type (inst->inst_vtype);
1397 if (cfg->gsharedvt && mini_is_gsharedvt_variable_type (t))
1400 /* inst->backend.is_pinvoke indicates native sized value types, this is used by the
1401 * pinvoke wrappers when they call functions returning structures */
1402 if (inst->backend.is_pinvoke && MONO_TYPE_ISSTRUCT (t) && t->type != MONO_TYPE_TYPEDBYREF) {
1403 size = mono_class_native_size (mono_class_from_mono_type (t), &align);
1408 size = mini_type_stack_size (t, &ialign);
1411 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (t)))
1416 if (cfg->disable_reuse_stack_slots)
1419 t = mini_get_underlying_type (t);
1421 case MONO_TYPE_GENERICINST:
1422 if (!mono_type_generic_inst_is_valuetype (t)) {
1423 slot_info = &scalar_stack_slots [t->type];
1427 case MONO_TYPE_VALUETYPE:
1428 if (!vtype_stack_slots)
1429 vtype_stack_slots = (StackSlotInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (StackSlotInfo) * 256);
1430 for (i = 0; i < nvtypes; ++i)
1431 if (t->data.klass == vtype_stack_slots [i].vtype)
1434 slot_info = &vtype_stack_slots [i];
1436 g_assert (nvtypes < 256);
1437 vtype_stack_slots [nvtypes].vtype = t->data.klass;
1438 slot_info = &vtype_stack_slots [nvtypes];
1441 if (cfg->disable_reuse_ref_stack_slots)
1448 #if SIZEOF_VOID_P == 4
1453 if (cfg->disable_ref_noref_stack_slot_share) {
1454 slot_info = &scalar_stack_slots [MONO_TYPE_I];
1459 case MONO_TYPE_CLASS:
1460 case MONO_TYPE_OBJECT:
1461 case MONO_TYPE_ARRAY:
1462 case MONO_TYPE_SZARRAY:
1463 case MONO_TYPE_STRING:
1464 /* Share non-float stack slots of the same size */
1465 slot_info = &scalar_stack_slots [MONO_TYPE_CLASS];
1466 if (cfg->disable_reuse_ref_stack_slots)
1471 slot_info = &scalar_stack_slots [t->type];
1475 if (cfg->comp_done & MONO_COMP_LIVENESS) {
1479 //printf ("START %2d %08x %08x\n", vmv->idx, vmv->range.first_use.abs_pos, vmv->range.last_use.abs_pos);
1481 if (!current->interval->range) {
1482 if (inst->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT))
1486 inst->flags |= MONO_INST_IS_DEAD;
1491 pos = current->interval->range->from;
1493 LSCAN_DEBUG (printf ("process R%d ", inst->dreg));
1494 if (current->interval->range)
1495 LSCAN_DEBUG (mono_linterval_print (current->interval));
1496 LSCAN_DEBUG (printf ("\n"));
1498 /* Check for intervals in active which expired or inactive */
1500 /* FIXME: Optimize this */
1503 for (l = slot_info->active; l != NULL; l = l->next) {
1504 MonoMethodVar *v = (MonoMethodVar*)l->data;
1506 if (v->interval->last_range->to < pos) {
1507 slot_info->active = g_list_delete_link (slot_info->active, l);
1508 slot_info->slots = g_slist_prepend_mempool (cfg->mempool, slot_info->slots, GINT_TO_POINTER (offsets [v->idx]));
1509 LSCAN_DEBUG (printf ("Interval R%d has expired, adding 0x%x to slots\n", cfg->varinfo [v->idx]->dreg, offsets [v->idx]));
1513 else if (!mono_linterval_covers (v->interval, pos)) {
1514 slot_info->inactive = g_list_append (slot_info->inactive, v);
1515 slot_info->active = g_list_delete_link (slot_info->active, l);
1516 LSCAN_DEBUG (printf ("Interval R%d became inactive\n", cfg->varinfo [v->idx]->dreg));
1523 /* Check for intervals in inactive which expired or active */
1525 /* FIXME: Optimize this */
1528 for (l = slot_info->inactive; l != NULL; l = l->next) {
1529 MonoMethodVar *v = (MonoMethodVar*)l->data;
1531 if (v->interval->last_range->to < pos) {
1532 slot_info->inactive = g_list_delete_link (slot_info->inactive, l);
1533 // FIXME: Enabling this seems to cause impossible to debug crashes
1534 //slot_info->slots = g_slist_prepend_mempool (cfg->mempool, slot_info->slots, GINT_TO_POINTER (offsets [v->idx]));
1535 LSCAN_DEBUG (printf ("Interval R%d has expired, adding 0x%x to slots\n", cfg->varinfo [v->idx]->dreg, offsets [v->idx]));
1539 else if (mono_linterval_covers (v->interval, pos)) {
1540 slot_info->active = g_list_append (slot_info->active, v);
1541 slot_info->inactive = g_list_delete_link (slot_info->inactive, l);
1542 LSCAN_DEBUG (printf ("\tInterval R%d became active\n", cfg->varinfo [v->idx]->dreg));
1550 * This also handles the case when the variable is used in an
1551 * exception region, as liveness info is not computed there.
1554 * FIXME: All valuetypes are marked as INDIRECT because of LDADDR
1557 if (! (inst->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT))) {
1558 if (slot_info->slots) {
1559 slot = GPOINTER_TO_INT (slot_info->slots->data);
1561 slot_info->slots = slot_info->slots->next;
1564 /* FIXME: We might want to consider the inactive intervals as well if slot_info->slots is empty */
1566 slot_info->active = mono_varlist_insert_sorted (cfg, slot_info->active, vmv, TRUE);
1572 static int count = 0;
1575 if (count == atoi (g_getenv ("COUNT3")))
1576 printf ("LAST: %s\n", mono_method_full_name (cfg->method, TRUE));
1577 if (count > atoi (g_getenv ("COUNT3")))
1580 mono_print_ins (inst);
1585 LSCAN_DEBUG (printf ("R%d %s -> 0x%x\n", inst->dreg, mono_type_full_name (t), slot));
1587 if (inst->flags & MONO_INST_LMF) {
1588 size = sizeof (MonoLMF);
1589 align = sizeof (mgreg_t);
1596 if (slot == 0xffffff) {
1598 * Allways allocate valuetypes to sizeof (gpointer) to allow more
1599 * efficient copying (and to work around the fact that OP_MEMCPY
1600 * and OP_MEMSET ignores alignment).
1602 if (MONO_TYPE_ISSTRUCT (t)) {
1603 align = MAX (align, sizeof (gpointer));
1604 align = MAX (align, mono_class_min_align (mono_class_from_mono_type (t)));
1609 offset += align - 1;
1610 offset &= ~(align - 1);
1614 offset += align - 1;
1615 offset &= ~(align - 1);
1620 if (*stack_align == 0)
1621 *stack_align = align;
1624 offsets [vmv->idx] = slot;
1627 for (i = 0; i < MONO_TYPE_PINNED; ++i) {
1628 if (scalar_stack_slots [i].active)
1629 g_list_free (scalar_stack_slots [i].active);
1631 for (i = 0; i < nvtypes; ++i) {
1632 if (vtype_stack_slots [i].active)
1633 g_list_free (vtype_stack_slots [i].active);
1636 cfg->stat_locals_stack_size += offset;
1638 *stack_size = offset;
1643 * mono_allocate_stack_slots:
1645 * Allocate stack slots for all non register allocated variables using a
1646 * linear scan algorithm.
1647 * Returns: an array of stack offsets.
1648 * STACK_SIZE is set to the amount of stack space needed.
1649 * STACK_ALIGN is set to the alignment needed by the locals area.
1652 mono_allocate_stack_slots (MonoCompile *cfg, gboolean backward, guint32 *stack_size, guint32 *stack_align)
1654 int i, slot, offset, size;
1659 GList *vars = NULL, *l;
1660 StackSlotInfo *scalar_stack_slots, *vtype_stack_slots, *slot_info;
1663 gboolean reuse_slot;
1665 if ((cfg->num_varinfo > 0) && MONO_VARINFO (cfg, 0)->interval)
1666 return mono_allocate_stack_slots2 (cfg, backward, stack_size, stack_align);
1668 scalar_stack_slots = (StackSlotInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (StackSlotInfo) * MONO_TYPE_PINNED);
1669 vtype_stack_slots = NULL;
1672 offsets = (gint32 *)mono_mempool_alloc (cfg->mempool, sizeof (gint32) * cfg->num_varinfo);
1673 for (i = 0; i < cfg->num_varinfo; ++i)
1676 for (i = cfg->locals_start; i < cfg->num_varinfo; i++) {
1677 inst = cfg->varinfo [i];
1678 vmv = MONO_VARINFO (cfg, i);
1680 if ((inst->flags & MONO_INST_IS_DEAD) || inst->opcode == OP_REGVAR || inst->opcode == OP_REGOFFSET)
1683 vars = g_list_prepend (vars, vmv);
1686 vars = mono_varlist_sort (cfg, vars, 0);
1688 *stack_align = sizeof(mgreg_t);
1689 for (l = vars; l; l = l->next) {
1690 vmv = (MonoMethodVar *)l->data;
1691 inst = cfg->varinfo [vmv->idx];
1693 t = mono_type_get_underlying_type (inst->inst_vtype);
1694 if (cfg->gsharedvt && mini_is_gsharedvt_variable_type (t))
1697 /* inst->backend.is_pinvoke indicates native sized value types, this is used by the
1698 * pinvoke wrappers when they call functions returning structures */
1699 if (inst->backend.is_pinvoke && MONO_TYPE_ISSTRUCT (t) && t->type != MONO_TYPE_TYPEDBYREF) {
1700 size = mono_class_native_size (mono_class_from_mono_type (t), &align);
1704 size = mini_type_stack_size (t, &ialign);
1707 if (mono_class_has_failure (mono_class_from_mono_type (t)))
1708 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
1710 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (t)))
1715 if (cfg->disable_reuse_stack_slots)
1718 t = mini_get_underlying_type (t);
1720 case MONO_TYPE_GENERICINST:
1721 if (!mono_type_generic_inst_is_valuetype (t)) {
1722 slot_info = &scalar_stack_slots [t->type];
1726 case MONO_TYPE_VALUETYPE:
1727 if (!vtype_stack_slots)
1728 vtype_stack_slots = (StackSlotInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (StackSlotInfo) * 256);
1729 for (i = 0; i < nvtypes; ++i)
1730 if (t->data.klass == vtype_stack_slots [i].vtype)
1733 slot_info = &vtype_stack_slots [i];
1735 g_assert (nvtypes < 256);
1736 vtype_stack_slots [nvtypes].vtype = t->data.klass;
1737 slot_info = &vtype_stack_slots [nvtypes];
1740 if (cfg->disable_reuse_ref_stack_slots)
1747 #if SIZEOF_VOID_P == 4
1752 if (cfg->disable_ref_noref_stack_slot_share) {
1753 slot_info = &scalar_stack_slots [MONO_TYPE_I];
1758 case MONO_TYPE_CLASS:
1759 case MONO_TYPE_OBJECT:
1760 case MONO_TYPE_ARRAY:
1761 case MONO_TYPE_SZARRAY:
1762 case MONO_TYPE_STRING:
1763 /* Share non-float stack slots of the same size */
1764 slot_info = &scalar_stack_slots [MONO_TYPE_CLASS];
1765 if (cfg->disable_reuse_ref_stack_slots)
1769 case MONO_TYPE_MVAR:
1770 slot_info = &scalar_stack_slots [t->type];
1773 slot_info = &scalar_stack_slots [t->type];
1778 if (cfg->comp_done & MONO_COMP_LIVENESS) {
1779 //printf ("START %2d %08x %08x\n", vmv->idx, vmv->range.first_use.abs_pos, vmv->range.last_use.abs_pos);
1781 /* expire old intervals in active */
1782 while (slot_info->active) {
1783 MonoMethodVar *amv = (MonoMethodVar *)slot_info->active->data;
1785 if (amv->range.last_use.abs_pos > vmv->range.first_use.abs_pos)
1788 //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);
1790 slot_info->active = g_list_delete_link (slot_info->active, slot_info->active);
1791 slot_info->slots = g_slist_prepend_mempool (cfg->mempool, slot_info->slots, GINT_TO_POINTER (offsets [amv->idx]));
1795 * This also handles the case when the variable is used in an
1796 * exception region, as liveness info is not computed there.
1799 * FIXME: All valuetypes are marked as INDIRECT because of LDADDR
1802 if (! (inst->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT))) {
1803 if (slot_info->slots) {
1804 slot = GPOINTER_TO_INT (slot_info->slots->data);
1806 slot_info->slots = slot_info->slots->next;
1809 slot_info->active = mono_varlist_insert_sorted (cfg, slot_info->active, vmv, TRUE);
1814 static int count = 0;
1818 if (count == atoi (g_getenv ("COUNT")))
1819 printf ("LAST: %s\n", mono_method_full_name (cfg->method, TRUE));
1820 if (count > atoi (g_getenv ("COUNT")))
1823 mono_print_ins (inst);
1828 if (inst->flags & MONO_INST_LMF) {
1830 * This variable represents a MonoLMF structure, which has no corresponding
1831 * CLR type, so hard-code its size/alignment.
1833 size = sizeof (MonoLMF);
1834 align = sizeof (mgreg_t);
1841 if (slot == 0xffffff) {
1843 * Allways allocate valuetypes to sizeof (gpointer) to allow more
1844 * efficient copying (and to work around the fact that OP_MEMCPY
1845 * and OP_MEMSET ignores alignment).
1847 if (MONO_TYPE_ISSTRUCT (t)) {
1848 align = MAX (align, sizeof (gpointer));
1849 align = MAX (align, mono_class_min_align (mono_class_from_mono_type (t)));
1851 * Align the size too so the code generated for passing vtypes in
1852 * registers doesn't overwrite random locals.
1854 size = (size + (align - 1)) & ~(align -1);
1859 offset += align - 1;
1860 offset &= ~(align - 1);
1864 offset += align - 1;
1865 offset &= ~(align - 1);
1870 *stack_align = MAX (*stack_align, align);
1873 offsets [vmv->idx] = slot;
1876 for (i = 0; i < MONO_TYPE_PINNED; ++i) {
1877 if (scalar_stack_slots [i].active)
1878 g_list_free (scalar_stack_slots [i].active);
1880 for (i = 0; i < nvtypes; ++i) {
1881 if (vtype_stack_slots [i].active)
1882 g_list_free (vtype_stack_slots [i].active);
1885 cfg->stat_locals_stack_size += offset;
1887 *stack_size = offset;
1891 #define EMUL_HIT_SHIFT 3
1892 #define EMUL_HIT_MASK ((1 << EMUL_HIT_SHIFT) - 1)
1893 /* small hit bitmap cache */
1894 static mono_byte emul_opcode_hit_cache [(OP_LAST>>EMUL_HIT_SHIFT) + 1] = {0};
1895 static short emul_opcode_num = 0;
1896 static short emul_opcode_alloced = 0;
1897 static short *emul_opcode_opcodes;
1898 static MonoJitICallInfo **emul_opcode_map;
1901 mono_find_jit_opcode_emulation (int opcode)
1903 g_assert (opcode >= 0 && opcode <= OP_LAST);
1904 if (emul_opcode_hit_cache [opcode >> (EMUL_HIT_SHIFT + 3)] & (1 << (opcode & EMUL_HIT_MASK))) {
1906 for (i = 0; i < emul_opcode_num; ++i) {
1907 if (emul_opcode_opcodes [i] == opcode)
1908 return emul_opcode_map [i];
1915 mini_register_opcode_emulation (int opcode, const char *name, const char *sigstr, gpointer func, const char *symbol, gboolean no_throw)
1917 MonoJitICallInfo *info;
1918 MonoMethodSignature *sig = mono_create_icall_signature (sigstr);
1920 g_assert (!sig->hasthis);
1921 g_assert (sig->param_count < 3);
1923 /* Opcode emulation functions are assumed to don't call mono_raise_exception () */
1924 info = mono_register_jit_icall_full (func, name, sig, no_throw, TRUE, symbol);
1926 if (emul_opcode_num >= emul_opcode_alloced) {
1927 int incr = emul_opcode_alloced? emul_opcode_alloced/2: 16;
1928 emul_opcode_alloced += incr;
1929 emul_opcode_map = (MonoJitICallInfo **)g_realloc (emul_opcode_map, sizeof (emul_opcode_map [0]) * emul_opcode_alloced);
1930 emul_opcode_opcodes = (short *)g_realloc (emul_opcode_opcodes, sizeof (emul_opcode_opcodes [0]) * emul_opcode_alloced);
1932 emul_opcode_map [emul_opcode_num] = info;
1933 emul_opcode_opcodes [emul_opcode_num] = opcode;
1935 emul_opcode_hit_cache [opcode >> (EMUL_HIT_SHIFT + 3)] |= (1 << (opcode & EMUL_HIT_MASK));
1939 print_dfn (MonoCompile *cfg)
1947 char *method_name = mono_method_full_name (cfg->method, TRUE);
1948 g_print ("IR code for method %s\n", method_name);
1949 g_free (method_name);
1952 for (i = 0; i < cfg->num_bblocks; ++i) {
1953 bb = cfg->bblocks [i];
1954 /*if (bb->cil_code) {
1955 char* code1, *code2;
1956 code1 = mono_disasm_code_one (NULL, cfg->method, bb->cil_code, NULL);
1957 if (bb->last_ins->cil_code)
1958 code2 = mono_disasm_code_one (NULL, cfg->method, bb->last_ins->cil_code, NULL);
1960 code2 = g_strdup ("");
1962 code1 [strlen (code1) - 1] = 0;
1963 code = g_strdup_printf ("%s -> %s", code1, code2);
1967 code = g_strdup ("\n");
1968 g_print ("\nBB%d (%d) (len: %d): %s", bb->block_num, i, bb->cil_length, code);
1969 MONO_BB_FOR_EACH_INS (bb, c) {
1970 mono_print_ins_index (-1, c);
1973 g_print ("\tprev:");
1974 for (j = 0; j < bb->in_count; ++j) {
1975 g_print (" BB%d", bb->in_bb [j]->block_num);
1977 g_print ("\t\tsucc:");
1978 for (j = 0; j < bb->out_count; ++j) {
1979 g_print (" BB%d", bb->out_bb [j]->block_num);
1981 g_print ("\n\tidom: BB%d\n", bb->idom? bb->idom->block_num: -1);
1984 g_assert (mono_bitset_test_fast (bb->dominators, bb->idom->dfn));
1987 mono_blockset_print (cfg, bb->dominators, "\tdominators", bb->idom? bb->idom->dfn: -1);
1989 mono_blockset_print (cfg, bb->dfrontier, "\tdfrontier", -1);
1997 mono_bblock_add_inst (MonoBasicBlock *bb, MonoInst *inst)
1999 MONO_ADD_INS (bb, inst);
2003 mono_bblock_insert_after_ins (MonoBasicBlock *bb, MonoInst *ins, MonoInst *ins_to_insert)
2007 bb->code = ins_to_insert;
2009 /* Link with next */
2010 ins_to_insert->next = ins;
2012 ins->prev = ins_to_insert;
2014 if (bb->last_ins == NULL)
2015 bb->last_ins = ins_to_insert;
2017 /* Link with next */
2018 ins_to_insert->next = ins->next;
2020 ins->next->prev = ins_to_insert;
2022 /* Link with previous */
2023 ins->next = ins_to_insert;
2024 ins_to_insert->prev = ins;
2026 if (bb->last_ins == ins)
2027 bb->last_ins = ins_to_insert;
2032 mono_bblock_insert_before_ins (MonoBasicBlock *bb, MonoInst *ins, MonoInst *ins_to_insert)
2037 ins->prev = ins_to_insert;
2038 bb->code = ins_to_insert;
2039 ins_to_insert->next = ins;
2040 if (bb->last_ins == NULL)
2041 bb->last_ins = ins_to_insert;
2043 /* Link with previous */
2045 ins->prev->next = ins_to_insert;
2046 ins_to_insert->prev = ins->prev;
2048 /* Link with next */
2049 ins->prev = ins_to_insert;
2050 ins_to_insert->next = ins;
2052 if (bb->code == ins)
2053 bb->code = ins_to_insert;
2058 * mono_verify_bblock:
2060 * Verify that the next and prev pointers are consistent inside the instructions in BB.
2063 mono_verify_bblock (MonoBasicBlock *bb)
2065 MonoInst *ins, *prev;
2068 for (ins = bb->code; ins; ins = ins->next) {
2069 g_assert (ins->prev == prev);
2073 g_assert (!bb->last_ins->next);
2079 * Perform consistency checks on the JIT data structures and the IR
2082 mono_verify_cfg (MonoCompile *cfg)
2086 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
2087 mono_verify_bblock (bb);
2091 mono_destroy_compile (MonoCompile *cfg)
2096 mono_metadata_free_mh (cfg->header);
2097 //mono_mempool_stats (cfg->mempool);
2098 mono_free_loop_info (cfg);
2100 mono_regstate_free (cfg->rs);
2102 g_hash_table_destroy (cfg->spvars);
2104 g_hash_table_destroy (cfg->exvars);
2105 for (l = cfg->headers_to_free; l; l = l->next)
2106 mono_metadata_free_mh ((MonoMethodHeader *)l->data);
2107 g_list_free (cfg->ldstr_list);
2108 g_hash_table_destroy (cfg->token_info_hash);
2109 if (cfg->abs_patches)
2110 g_hash_table_destroy (cfg->abs_patches);
2111 mono_mempool_destroy (cfg->mempool);
2113 mono_debug_free_method (cfg);
2115 g_free (cfg->varinfo);
2117 g_free (cfg->exception_message);
2122 mono_create_tls_get_offset (MonoCompile *cfg, int offset)
2126 if (!cfg->backend->have_tls_get)
2132 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
2133 ins->dreg = mono_alloc_preg (cfg);
2134 ins->inst_offset = offset;
2139 mini_tls_get_supported (MonoCompile *cfg, MonoTlsKey key)
2141 if (!cfg->backend->have_tls_get)
2144 if (cfg->compile_aot)
2145 return cfg->backend->have_tls_get_reg;
2147 return mini_get_tls_offset (key) != -1;
2151 mono_create_tls_get (MonoCompile *cfg, MonoTlsKey key)
2153 if (!cfg->backend->have_tls_get)
2157 * TLS offsets might be different at AOT time, so load them from a GOT slot and
2158 * use a different opcode.
2160 if (cfg->compile_aot) {
2161 if (cfg->backend->have_tls_get_reg) {
2164 EMIT_NEW_TLS_OFFSETCONST (cfg, c, key);
2165 MONO_INST_NEW (cfg, ins, OP_TLS_GET_REG);
2166 ins->dreg = mono_alloc_preg (cfg);
2167 ins->sreg1 = c->dreg;
2174 return mono_create_tls_get_offset (cfg, mini_get_tls_offset (key));
2178 mono_get_jit_tls_intrinsic (MonoCompile *cfg)
2180 return mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
2184 mono_get_domain_intrinsic (MonoCompile* cfg)
2186 return mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
2190 mono_get_thread_intrinsic (MonoCompile* cfg)
2192 return mono_create_tls_get (cfg, TLS_KEY_THREAD);
2196 mono_get_lmf_intrinsic (MonoCompile* cfg)
2198 return mono_create_tls_get (cfg, TLS_KEY_LMF);
2202 mono_get_lmf_addr_intrinsic (MonoCompile* cfg)
2204 return mono_create_tls_get (cfg, TLS_KEY_LMF_ADDR);
2208 mono_add_patch_info (MonoCompile *cfg, int ip, MonoJumpInfoType type, gconstpointer target)
2210 MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfo));
2214 ji->data.target = target;
2215 ji->next = cfg->patch_info;
2217 cfg->patch_info = ji;
2221 mono_add_patch_info_rel (MonoCompile *cfg, int ip, MonoJumpInfoType type, gconstpointer target, int relocation)
2223 MonoJumpInfo *ji = (MonoJumpInfo *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfo));
2227 ji->relocation = relocation;
2228 ji->data.target = target;
2229 ji->next = cfg->patch_info;
2231 cfg->patch_info = ji;
2235 mono_remove_patch_info (MonoCompile *cfg, int ip)
2237 MonoJumpInfo **ji = &cfg->patch_info;
2240 if ((*ji)->ip.i == ip)
2243 ji = &((*ji)->next);
2248 mono_add_seq_point (MonoCompile *cfg, MonoBasicBlock *bb, MonoInst *ins, int native_offset)
2250 ins->inst_offset = native_offset;
2251 g_ptr_array_add (cfg->seq_points, ins);
2253 bb->seq_points = g_slist_prepend_mempool (cfg->mempool, bb->seq_points, ins);
2254 bb->last_seq_point = ins;
2259 mono_add_var_location (MonoCompile *cfg, MonoInst *var, gboolean is_reg, int reg, int offset, int from, int to)
2261 MonoDwarfLocListEntry *entry = (MonoDwarfLocListEntry *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDwarfLocListEntry));
2264 g_assert (offset == 0);
2266 entry->is_reg = is_reg;
2268 entry->offset = offset;
2272 if (var == cfg->args [0])
2273 cfg->this_loclist = g_slist_append_mempool (cfg->mempool, cfg->this_loclist, entry);
2274 else if (var == cfg->rgctx_var)
2275 cfg->rgctx_loclist = g_slist_append_mempool (cfg->mempool, cfg->rgctx_loclist, entry);
2279 mono_compile_create_vars (MonoCompile *cfg)
2281 MonoMethodSignature *sig;
2282 MonoMethodHeader *header;
2285 header = cfg->header;
2287 sig = mono_method_signature (cfg->method);
2289 if (!MONO_TYPE_IS_VOID (sig->ret)) {
2290 cfg->ret = mono_compile_create_var (cfg, sig->ret, OP_ARG);
2291 /* Inhibit optimizations */
2292 cfg->ret->flags |= MONO_INST_VOLATILE;
2294 if (cfg->verbose_level > 2)
2295 g_print ("creating vars\n");
2297 cfg->args = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, (sig->param_count + sig->hasthis) * sizeof (MonoInst*));
2300 cfg->args [0] = mono_compile_create_var (cfg, &cfg->method->klass->this_arg, OP_ARG);
2302 for (i = 0; i < sig->param_count; ++i) {
2303 cfg->args [i + sig->hasthis] = mono_compile_create_var (cfg, sig->params [i], OP_ARG);
2306 if (cfg->verbose_level > 2) {
2308 printf ("\treturn : ");
2309 mono_print_ins (cfg->ret);
2313 printf ("\tthis: ");
2314 mono_print_ins (cfg->args [0]);
2317 for (i = 0; i < sig->param_count; ++i) {
2318 printf ("\targ [%d]: ", i);
2319 mono_print_ins (cfg->args [i + sig->hasthis]);
2323 cfg->locals_start = cfg->num_varinfo;
2324 cfg->locals = (MonoInst **)mono_mempool_alloc0 (cfg->mempool, header->num_locals * sizeof (MonoInst*));
2326 if (cfg->verbose_level > 2)
2327 g_print ("creating locals\n");
2329 for (i = 0; i < header->num_locals; ++i)
2330 cfg->locals [i] = mono_compile_create_var (cfg, header->locals [i], OP_LOCAL);
2332 if (cfg->verbose_level > 2)
2333 g_print ("locals done\n");
2336 if (COMPILE_LLVM (cfg))
2337 mono_llvm_create_vars (cfg);
2339 mono_arch_create_vars (cfg);
2341 mono_arch_create_vars (cfg);
2344 if (cfg->method->save_lmf && cfg->create_lmf_var) {
2345 MonoInst *lmf_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2346 lmf_var->flags |= MONO_INST_VOLATILE;
2347 lmf_var->flags |= MONO_INST_LMF;
2348 cfg->lmf_var = lmf_var;
2353 mono_print_code (MonoCompile *cfg, const char* msg)
2357 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
2358 mono_print_bb (bb, msg);
2362 mono_postprocess_patches (MonoCompile *cfg)
2364 MonoJumpInfo *patch_info;
2367 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
2368 switch (patch_info->type) {
2369 case MONO_PATCH_INFO_ABS: {
2370 MonoJitICallInfo *info = mono_find_jit_icall_by_addr (patch_info->data.target);
2373 * Change patches of type MONO_PATCH_INFO_ABS into patches describing the
2377 //printf ("TEST %s %p\n", info->name, patch_info->data.target);
2378 /* for these array methods we currently register the same function pointer
2379 * since it's a vararg function. But this means that mono_find_jit_icall_by_addr ()
2380 * will return the incorrect one depending on the order they are registered.
2381 * See tests/test-arr.cs
2383 if (strstr (info->name, "ves_array_new_va_") == NULL && strstr (info->name, "ves_array_element_address_") == NULL) {
2384 patch_info->type = MONO_PATCH_INFO_INTERNAL_METHOD;
2385 patch_info->data.name = info->name;
2389 if (patch_info->type == MONO_PATCH_INFO_ABS) {
2390 if (cfg->abs_patches) {
2391 MonoJumpInfo *abs_ji = (MonoJumpInfo *)g_hash_table_lookup (cfg->abs_patches, patch_info->data.target);
2393 patch_info->type = abs_ji->type;
2394 patch_info->data.target = abs_ji->data.target;
2401 case MONO_PATCH_INFO_SWITCH: {
2403 #if defined(__native_client__) && defined(__native_client_codegen__)
2404 /* This memory will leak. */
2405 /* TODO: can we free this when */
2406 /* making the final jump table? */
2407 table = g_malloc0 (sizeof(gpointer) * patch_info->data.table->table_size);
2409 if (cfg->method->dynamic) {
2410 table = (void **)mono_code_manager_reserve (cfg->dynamic_info->code_mp, sizeof (gpointer) * patch_info->data.table->table_size);
2412 table = (void **)mono_domain_code_reserve (cfg->domain, sizeof (gpointer) * patch_info->data.table->table_size);
2416 for (i = 0; i < patch_info->data.table->table_size; i++) {
2417 /* Might be NULL if the switch is eliminated */
2418 if (patch_info->data.table->table [i]) {
2419 g_assert (patch_info->data.table->table [i]->native_offset);
2420 table [i] = GINT_TO_POINTER (patch_info->data.table->table [i]->native_offset);
2425 patch_info->data.table->table = (MonoBasicBlock**)table;
2428 case MONO_PATCH_INFO_METHOD_JUMP: {
2429 MonoJumpList *jlist;
2430 MonoDomain *domain = cfg->domain;
2431 unsigned char *ip = cfg->native_code + patch_info->ip.i;
2432 #if defined(__native_client__) && defined(__native_client_codegen__)
2433 /* When this jump target gets evaluated, the method */
2434 /* will be installed in the dynamic code section, */
2435 /* not at the location of cfg->native_code. */
2436 ip = nacl_inverse_modify_patch_target (cfg->native_code) + patch_info->ip.i;
2439 mono_domain_lock (domain);
2440 jlist = (MonoJumpList *)g_hash_table_lookup (domain_jit_info (domain)->jump_target_hash, patch_info->data.method);
2442 jlist = (MonoJumpList *)mono_domain_alloc0 (domain, sizeof (MonoJumpList));
2443 g_hash_table_insert (domain_jit_info (domain)->jump_target_hash, patch_info->data.method, jlist);
2445 jlist->list = g_slist_prepend (jlist->list, ip);
2446 mono_domain_unlock (domain);
2457 mono_codegen (MonoCompile *cfg)
2460 int max_epilog_size;
2462 MonoDomain *code_domain;
2463 guint unwindlen = 0;
2465 if (mono_using_xdebug)
2467 * Recent gdb versions have trouble processing symbol files containing
2468 * overlapping address ranges, so allocate all code from the code manager
2469 * of the root domain. (#666152).
2471 code_domain = mono_get_root_domain ();
2473 code_domain = cfg->domain;
2475 #if defined(__native_client_codegen__) && defined(__native_client__)
2478 /* This keeps patch targets from being transformed during
2479 * ordinary method compilation, for local branches and jumps.
2481 nacl_allow_target_modification (FALSE);
2484 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2485 cfg->spill_count = 0;
2486 /* we reuse dfn here */
2487 /* bb->dfn = bb_count++; */
2489 mono_arch_lowering_pass (cfg, bb);
2491 if (cfg->opt & MONO_OPT_PEEPHOLE)
2492 mono_arch_peephole_pass_1 (cfg, bb);
2494 mono_local_regalloc (cfg, bb);
2496 if (cfg->opt & MONO_OPT_PEEPHOLE)
2497 mono_arch_peephole_pass_2 (cfg, bb);
2499 if (cfg->gen_seq_points && !cfg->gen_sdb_seq_points)
2500 mono_bb_deduplicate_op_il_seq_points (cfg, bb);
2503 if (cfg->prof_options & MONO_PROFILE_COVERAGE)
2504 cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, cfg->num_bblocks);
2506 code = mono_arch_emit_prolog (cfg);
2508 cfg->code_len = code - cfg->native_code;
2509 cfg->prolog_end = cfg->code_len;
2510 cfg->cfa_reg = cfg->cur_cfa_reg;
2511 cfg->cfa_offset = cfg->cur_cfa_offset;
2513 mono_debug_open_method (cfg);
2515 /* emit code all basic blocks */
2516 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2517 bb->native_offset = cfg->code_len;
2518 bb->real_native_offset = cfg->code_len;
2519 //if ((bb == cfg->bb_entry) || !(bb->region == -1 && !bb->dfn))
2520 mono_arch_output_basic_block (cfg, bb);
2521 bb->native_length = cfg->code_len - bb->native_offset;
2523 if (bb == cfg->bb_exit) {
2524 cfg->epilog_begin = cfg->code_len;
2525 mono_arch_emit_epilog (cfg);
2526 cfg->epilog_end = cfg->code_len;
2530 #ifdef __native_client_codegen__
2531 mono_nacl_fix_patches (cfg->native_code, cfg->patch_info);
2533 mono_arch_emit_exceptions (cfg);
2535 max_epilog_size = 0;
2537 /* we always allocate code in cfg->domain->code_mp to increase locality */
2538 cfg->code_size = cfg->code_len + max_epilog_size;
2539 #ifdef __native_client_codegen__
2540 cfg->code_size = NACL_BUNDLE_ALIGN_UP (cfg->code_size);
2542 /* fixme: align to MONO_ARCH_CODE_ALIGNMENT */
2544 #ifdef MONO_ARCH_HAVE_UNWIND_TABLE
2545 unwindlen = mono_arch_unwindinfo_get_size (cfg->arch.unwindinfo);
2548 if (cfg->method->dynamic) {
2549 /* Allocate the code into a separate memory pool so it can be freed */
2550 cfg->dynamic_info = g_new0 (MonoJitDynamicMethodInfo, 1);
2551 cfg->dynamic_info->code_mp = mono_code_manager_new_dynamic ();
2552 mono_domain_lock (cfg->domain);
2553 mono_dynamic_code_hash_insert (cfg->domain, cfg->method, cfg->dynamic_info);
2554 mono_domain_unlock (cfg->domain);
2556 if (mono_using_xdebug)
2557 /* See the comment for cfg->code_domain */
2558 code = (guint8 *)mono_domain_code_reserve (code_domain, cfg->code_size + cfg->thunk_area + unwindlen);
2560 code = (guint8 *)mono_code_manager_reserve (cfg->dynamic_info->code_mp, cfg->code_size + cfg->thunk_area + unwindlen);
2562 code = (guint8 *)mono_domain_code_reserve (code_domain, cfg->code_size + cfg->thunk_area + unwindlen);
2564 #if defined(__native_client_codegen__) && defined(__native_client__)
2565 nacl_allow_target_modification (TRUE);
2567 if (cfg->thunk_area) {
2568 cfg->thunks_offset = cfg->code_size + unwindlen;
2569 cfg->thunks = code + cfg->thunks_offset;
2570 memset (cfg->thunks, 0, cfg->thunk_area);
2574 memcpy (code, cfg->native_code, cfg->code_len);
2575 #if defined(__default_codegen__)
2576 g_free (cfg->native_code);
2577 #elif defined(__native_client_codegen__)
2578 if (cfg->native_code_alloc) {
2579 g_free (cfg->native_code_alloc);
2580 cfg->native_code_alloc = 0;
2582 else if (cfg->native_code) {
2583 g_free (cfg->native_code);
2585 #endif /* __native_client_codegen__ */
2586 cfg->native_code = code;
2587 code = cfg->native_code + cfg->code_len;
2589 /* g_assert (((int)cfg->native_code & (MONO_ARCH_CODE_ALIGNMENT - 1)) == 0); */
2590 mono_postprocess_patches (cfg);
2592 #ifdef VALGRIND_JIT_REGISTER_MAP
2593 if (valgrind_register){
2594 char* nm = mono_method_full_name (cfg->method, TRUE);
2595 VALGRIND_JIT_REGISTER_MAP (nm, cfg->native_code, cfg->native_code + cfg->code_len);
2600 if (cfg->verbose_level > 0) {
2601 char* nm = mono_method_get_full_name (cfg->method);
2602 char *opt_descr = mono_opt_descr (cfg->opt);
2603 g_print ("Method %s emitted at %p to %p (code length %d) [%s] with opts %s\n",
2605 cfg->native_code, cfg->native_code + cfg->code_len, cfg->code_len, cfg->domain->friendly_name,
2612 gboolean is_generic = FALSE;
2614 if (cfg->method->is_inflated || mono_method_get_generic_container (cfg->method) ||
2615 cfg->method->klass->generic_container || cfg->method->klass->generic_class) {
2620 g_assert (is_generic);
2623 #ifdef MONO_ARCH_HAVE_SAVE_UNWIND_INFO
2624 mono_arch_save_unwind_info (cfg);
2627 #if defined(__native_client_codegen__) && defined(__native_client__)
2628 if (!cfg->compile_aot) {
2629 if (cfg->method->dynamic) {
2630 code_dest = nacl_code_manager_get_code_dest(cfg->dynamic_info->code_mp, cfg->native_code);
2632 code_dest = nacl_domain_get_code_dest(cfg->domain, cfg->native_code);
2637 #if defined(__native_client_codegen__)
2638 mono_nacl_fix_patches (cfg->native_code, cfg->patch_info);
2641 #ifdef MONO_ARCH_HAVE_PATCH_CODE_NEW
2646 for (ji = cfg->patch_info; ji; ji = ji->next) {
2647 if (cfg->compile_aot) {
2649 case MONO_PATCH_INFO_BB:
2650 case MONO_PATCH_INFO_LABEL:
2653 /* No need to patch these */
2658 if (ji->type == MONO_PATCH_INFO_NONE)
2661 target = mono_resolve_patch_target (cfg->method, cfg->domain, cfg->native_code, ji, cfg->run_cctors, &cfg->error);
2662 if (!mono_error_ok (&cfg->error)) {
2663 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
2666 mono_arch_patch_code_new (cfg, cfg->domain, cfg->native_code, ji, target);
2670 mono_arch_patch_code (cfg, cfg->method, cfg->domain, cfg->native_code, cfg->patch_info, cfg->run_cctors);
2673 if (cfg->method->dynamic) {
2674 if (mono_using_xdebug)
2675 mono_domain_code_commit (code_domain, cfg->native_code, cfg->code_size, cfg->code_len);
2677 mono_code_manager_commit (cfg->dynamic_info->code_mp, cfg->native_code, cfg->code_size, cfg->code_len);
2679 mono_domain_code_commit (code_domain, cfg->native_code, cfg->code_size, cfg->code_len);
2681 #if defined(__native_client_codegen__) && defined(__native_client__)
2682 cfg->native_code = code_dest;
2684 mono_profiler_code_buffer_new (cfg->native_code, cfg->code_len, MONO_PROFILER_CODE_BUFFER_METHOD, cfg->method);
2686 mono_arch_flush_icache (cfg->native_code, cfg->code_len);
2688 mono_debug_close_method (cfg);
2690 #ifdef MONO_ARCH_HAVE_UNWIND_TABLE
2691 mono_arch_unwindinfo_install_unwind_info (&cfg->arch.unwindinfo, cfg->native_code, cfg->code_len);
2696 compute_reachable (MonoBasicBlock *bb)
2700 if (!(bb->flags & BB_VISITED)) {
2701 bb->flags |= BB_VISITED;
2702 for (i = 0; i < bb->out_count; ++i)
2703 compute_reachable (bb->out_bb [i]);
2707 static void mono_bb_ordering (MonoCompile *cfg)
2710 /* Depth-first ordering on basic blocks */
2711 cfg->bblocks = (MonoBasicBlock **)mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * (cfg->num_bblocks + 1));
2713 cfg->max_block_num = cfg->num_bblocks;
2715 df_visit (cfg->bb_entry, &dfn, cfg->bblocks);
2716 if (cfg->num_bblocks != dfn + 1) {
2719 cfg->num_bblocks = dfn + 1;
2721 /* remove unreachable code, because the code in them may be
2722 * inconsistent (access to dead variables for example) */
2723 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
2724 bb->flags &= ~BB_VISITED;
2725 compute_reachable (cfg->bb_entry);
2726 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
2727 if (bb->flags & BB_EXCEPTION_HANDLER)
2728 compute_reachable (bb);
2729 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2730 if (!(bb->flags & BB_VISITED)) {
2731 if (cfg->verbose_level > 1)
2732 g_print ("found unreachable code in BB%d\n", bb->block_num);
2733 bb->code = bb->last_ins = NULL;
2734 while (bb->out_count)
2735 mono_unlink_bblock (cfg, bb, bb->out_bb [0]);
2738 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
2739 bb->flags &= ~BB_VISITED;
2744 mono_handle_out_of_line_bblock (MonoCompile *cfg)
2747 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2748 if (bb->next_bb && bb->next_bb->out_of_line && bb->last_ins && !MONO_IS_BRANCH_OP (bb->last_ins)) {
2750 MONO_INST_NEW (cfg, ins, OP_BR);
2751 MONO_ADD_INS (bb, ins);
2752 ins->inst_target_bb = bb->next_bb;
2758 create_jit_info (MonoCompile *cfg, MonoMethod *method_to_compile)
2761 MonoMethodHeader *header;
2763 MonoJitInfoFlags flags = JIT_INFO_NONE;
2764 int num_clauses, num_holes = 0;
2765 guint32 stack_size = 0;
2767 g_assert (method_to_compile == cfg->method);
2768 header = cfg->header;
2771 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_GENERIC_JIT_INFO);
2773 if (cfg->arch_eh_jit_info) {
2774 MonoJitArgumentInfo *arg_info;
2775 MonoMethodSignature *sig = mono_method_signature (cfg->method_to_register);
2778 * This cannot be computed during stack walking, as
2779 * mono_arch_get_argument_info () is not signal safe.
2781 arg_info = g_newa (MonoJitArgumentInfo, sig->param_count + 1);
2782 stack_size = mono_arch_get_argument_info (sig, sig->param_count, arg_info);
2785 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_ARCH_EH_INFO);
2788 if (cfg->has_unwind_info_for_epilog && !(flags & JIT_INFO_HAS_ARCH_EH_INFO))
2789 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_ARCH_EH_INFO);
2791 if (cfg->thunk_area)
2792 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_THUNK_INFO);
2794 if (cfg->try_block_holes) {
2795 for (tmp = cfg->try_block_holes; tmp; tmp = tmp->next) {
2796 TryBlockHole *hole = (TryBlockHole *)tmp->data;
2797 MonoExceptionClause *ec = hole->clause;
2798 int hole_end = hole->basic_block->native_offset + hole->basic_block->native_length;
2799 MonoBasicBlock *clause_last_bb = cfg->cil_offset_to_bb [ec->try_offset + ec->try_len];
2800 g_assert (clause_last_bb);
2802 /* Holes at the end of a try region can be represented by simply reducing the size of the block itself.*/
2803 if (clause_last_bb->native_offset != hole_end)
2807 flags = (MonoJitInfoFlags)(flags | JIT_INFO_HAS_TRY_BLOCK_HOLES);
2808 if (G_UNLIKELY (cfg->verbose_level >= 4))
2809 printf ("Number of try block holes %d\n", num_holes);
2812 if (COMPILE_LLVM (cfg))
2813 num_clauses = cfg->llvm_ex_info_len;
2815 num_clauses = header->num_clauses;
2817 if (cfg->method->dynamic)
2818 jinfo = (MonoJitInfo *)g_malloc0 (mono_jit_info_size (flags, num_clauses, num_holes));
2820 jinfo = (MonoJitInfo *)mono_domain_alloc0 (cfg->domain, mono_jit_info_size (flags, num_clauses, num_holes));
2821 mono_jit_info_init (jinfo, cfg->method_to_register, cfg->native_code, cfg->code_len, flags, num_clauses, num_holes);
2822 jinfo->domain_neutral = (cfg->opt & MONO_OPT_SHARED) != 0;
2824 if (COMPILE_LLVM (cfg))
2825 jinfo->from_llvm = TRUE;
2829 MonoGenericJitInfo *gi;
2830 GSList *loclist = NULL;
2832 gi = mono_jit_info_get_generic_jit_info (jinfo);
2835 if (cfg->method->dynamic)
2836 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2838 gi->generic_sharing_context = (MonoGenericSharingContext *)mono_domain_alloc0 (cfg->domain, sizeof (MonoGenericSharingContext));
2839 mini_init_gsctx (cfg->method->dynamic ? NULL : cfg->domain, NULL, cfg->gsctx_context, gi->generic_sharing_context);
2841 if ((method_to_compile->flags & METHOD_ATTRIBUTE_STATIC) ||
2842 mini_method_get_context (method_to_compile)->method_inst ||
2843 method_to_compile->klass->valuetype) {
2844 g_assert (cfg->rgctx_var);
2849 if ((method_to_compile->flags & METHOD_ATTRIBUTE_STATIC) ||
2850 mini_method_get_context (method_to_compile)->method_inst ||
2851 method_to_compile->klass->valuetype) {
2852 inst = cfg->rgctx_var;
2853 if (!COMPILE_LLVM (cfg))
2854 g_assert (inst->opcode == OP_REGOFFSET);
2855 loclist = cfg->rgctx_loclist;
2857 inst = cfg->args [0];
2858 loclist = cfg->this_loclist;
2862 /* Needed to handle async exceptions */
2866 gi->nlocs = g_slist_length (loclist);
2867 if (cfg->method->dynamic)
2868 gi->locations = (MonoDwarfLocListEntry *)g_malloc0 (gi->nlocs * sizeof (MonoDwarfLocListEntry));
2870 gi->locations = (MonoDwarfLocListEntry *)mono_domain_alloc0 (cfg->domain, gi->nlocs * sizeof (MonoDwarfLocListEntry));
2872 for (l = loclist; l; l = l->next) {
2873 memcpy (&(gi->locations [i]), l->data, sizeof (MonoDwarfLocListEntry));
2878 if (COMPILE_LLVM (cfg)) {
2879 g_assert (cfg->llvm_this_reg != -1);
2880 gi->this_in_reg = 0;
2881 gi->this_reg = cfg->llvm_this_reg;
2882 gi->this_offset = cfg->llvm_this_offset;
2883 } else if (inst->opcode == OP_REGVAR) {
2884 gi->this_in_reg = 1;
2885 gi->this_reg = inst->dreg;
2887 g_assert (inst->opcode == OP_REGOFFSET);
2889 g_assert (inst->inst_basereg == X86_EBP);
2890 #elif defined(TARGET_AMD64)
2891 g_assert (inst->inst_basereg == X86_EBP || inst->inst_basereg == X86_ESP);
2893 g_assert (inst->inst_offset >= G_MININT32 && inst->inst_offset <= G_MAXINT32);
2895 gi->this_in_reg = 0;
2896 gi->this_reg = inst->inst_basereg;
2897 gi->this_offset = inst->inst_offset;
2902 MonoTryBlockHoleTableJitInfo *table;
2905 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2906 table->num_holes = (guint16)num_holes;
2908 for (tmp = cfg->try_block_holes; tmp; tmp = tmp->next) {
2909 guint32 start_bb_offset;
2910 MonoTryBlockHoleJitInfo *hole;
2911 TryBlockHole *hole_data = (TryBlockHole *)tmp->data;
2912 MonoExceptionClause *ec = hole_data->clause;
2913 int hole_end = hole_data->basic_block->native_offset + hole_data->basic_block->native_length;
2914 MonoBasicBlock *clause_last_bb = cfg->cil_offset_to_bb [ec->try_offset + ec->try_len];
2915 g_assert (clause_last_bb);
2917 /* Holes at the end of a try region can be represented by simply reducing the size of the block itself.*/
2918 if (clause_last_bb->native_offset == hole_end)
2921 start_bb_offset = hole_data->start_offset - hole_data->basic_block->native_offset;
2922 hole = &table->holes [i++];
2923 hole->clause = hole_data->clause - &header->clauses [0];
2924 hole->offset = (guint32)hole_data->start_offset;
2925 hole->length = (guint16)(hole_data->basic_block->native_length - start_bb_offset);
2927 if (G_UNLIKELY (cfg->verbose_level >= 4))
2928 printf ("\tTry block hole at eh clause %d offset %x length %x\n", hole->clause, hole->offset, hole->length);
2930 g_assert (i == num_holes);
2933 if (jinfo->has_arch_eh_info) {
2934 MonoArchEHJitInfo *info;
2936 info = mono_jit_info_get_arch_eh_info (jinfo);
2938 info->stack_size = stack_size;
2941 if (cfg->thunk_area) {
2942 MonoThunkJitInfo *info;
2944 info = mono_jit_info_get_thunk_info (jinfo);
2945 info->thunks_offset = cfg->thunks_offset;
2946 info->thunks_size = cfg->thunk_area;
2949 if (COMPILE_LLVM (cfg)) {
2951 memcpy (&jinfo->clauses [0], &cfg->llvm_ex_info [0], num_clauses * sizeof (MonoJitExceptionInfo));
2952 } else if (header->num_clauses) {
2955 for (i = 0; i < header->num_clauses; i++) {
2956 MonoExceptionClause *ec = &header->clauses [i];
2957 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2958 MonoBasicBlock *tblock;
2959 MonoInst *exvar, *spvar;
2961 ei->flags = ec->flags;
2963 if (G_UNLIKELY (cfg->verbose_level >= 4))
2964 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);
2967 * The spvars are needed by mono_arch_install_handler_block_guard ().
2969 if (ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY) {
2972 region = ((i + 1) << 8) | MONO_REGION_FINALLY | ec->flags;
2973 spvar = mono_find_spvar_for_region (cfg, region);
2975 ei->exvar_offset = spvar->inst_offset;
2977 exvar = mono_find_exvar_for_offset (cfg, ec->handler_offset);
2978 ei->exvar_offset = exvar ? exvar->inst_offset : 0;
2981 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
2982 tblock = cfg->cil_offset_to_bb [ec->data.filter_offset];
2984 ei->data.filter = cfg->native_code + tblock->native_offset;
2986 ei->data.catch_class = ec->data.catch_class;
2989 tblock = cfg->cil_offset_to_bb [ec->try_offset];
2991 g_assert (tblock->native_offset);
2992 ei->try_start = cfg->native_code + tblock->native_offset;
2993 if (tblock->extend_try_block) {
2995 * Extend the try block backwards to include parts of the previous call
2998 ei->try_start = (guint8*)ei->try_start - cfg->backend->monitor_enter_adjustment;
3000 if (ec->try_offset + ec->try_len < header->code_size)
3001 tblock = cfg->cil_offset_to_bb [ec->try_offset + ec->try_len];
3003 tblock = cfg->bb_exit;
3004 if (G_UNLIKELY (cfg->verbose_level >= 4))
3005 printf ("looking for end of try [%d, %d] -> %p (code size %d)\n", ec->try_offset, ec->try_len, tblock, header->code_size);
3007 if (!tblock->native_offset) {
3009 for (j = ec->try_offset + ec->try_len, end = ec->try_offset; j >= end; --j) {
3010 MonoBasicBlock *bb = cfg->cil_offset_to_bb [j];
3011 if (bb && bb->native_offset) {
3017 ei->try_end = cfg->native_code + tblock->native_offset;
3018 g_assert (tblock->native_offset);
3019 tblock = cfg->cil_offset_to_bb [ec->handler_offset];
3021 ei->handler_start = cfg->native_code + tblock->native_offset;
3023 for (tmp = cfg->try_block_holes; tmp; tmp = tmp->next) {
3024 TryBlockHole *hole = (TryBlockHole *)tmp->data;
3025 gpointer hole_end = cfg->native_code + (hole->basic_block->native_offset + hole->basic_block->native_length);
3026 if (hole->clause == ec && hole_end == ei->try_end) {
3027 if (G_UNLIKELY (cfg->verbose_level >= 4))
3028 printf ("\tShortening try block %d from %x to %x\n", i, (int)((guint8*)ei->try_end - cfg->native_code), hole->start_offset);
3030 ei->try_end = cfg->native_code + hole->start_offset;
3035 if (ec->flags == MONO_EXCEPTION_CLAUSE_FINALLY) {
3037 if (ec->handler_offset + ec->handler_len < header->code_size) {
3038 tblock = cfg->cil_offset_to_bb [ec->handler_offset + ec->handler_len];
3039 if (tblock->native_offset) {
3040 end_offset = tblock->native_offset;
3044 for (j = ec->handler_offset + ec->handler_len, end = ec->handler_offset; j >= end; --j) {
3045 MonoBasicBlock *bb = cfg->cil_offset_to_bb [j];
3046 if (bb && bb->native_offset) {
3051 end_offset = tblock->native_offset + tblock->native_length;
3054 end_offset = cfg->epilog_begin;
3056 ei->data.handler_end = cfg->native_code + end_offset;
3061 if (G_UNLIKELY (cfg->verbose_level >= 4)) {
3063 for (i = 0; i < jinfo->num_clauses; i++) {
3064 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
3065 int start = (guint8*)ei->try_start - cfg->native_code;
3066 int end = (guint8*)ei->try_end - cfg->native_code;
3067 int handler = (guint8*)ei->handler_start - cfg->native_code;
3068 int handler_end = (guint8*)ei->data.handler_end - cfg->native_code;
3070 printf ("JitInfo EH clause %d flags %x try %x-%x handler %x-%x\n", i, ei->flags, start, end, handler, handler_end);
3074 if (cfg->encoded_unwind_ops) {
3075 /* Generated by LLVM */
3076 jinfo->unwind_info = mono_cache_unwind_info (cfg->encoded_unwind_ops, cfg->encoded_unwind_ops_len);
3077 g_free (cfg->encoded_unwind_ops);
3078 } else if (cfg->unwind_ops) {
3080 guint8 *unwind_info = mono_unwind_ops_encode (cfg->unwind_ops, &info_len);
3081 guint32 unwind_desc;
3083 unwind_desc = mono_cache_unwind_info (unwind_info, info_len);
3085 if (cfg->has_unwind_info_for_epilog) {
3086 MonoArchEHJitInfo *info;
3088 info = mono_jit_info_get_arch_eh_info (jinfo);
3090 info->epilog_size = cfg->code_len - cfg->epilog_begin;
3092 jinfo->unwind_info = unwind_desc;
3093 g_free (unwind_info);
3095 jinfo->unwind_info = cfg->used_int_regs;
3101 /* Return whenever METHOD is a gsharedvt method */
3103 is_gsharedvt_method (MonoMethod *method)
3105 MonoGenericContext *context;
3106 MonoGenericInst *inst;
3109 if (!method->is_inflated)
3111 context = mono_method_get_context (method);
3112 inst = context->class_inst;
3114 for (i = 0; i < inst->type_argc; ++i)
3115 if (mini_is_gsharedvt_gparam (inst->type_argv [i]))
3118 inst = context->method_inst;
3120 for (i = 0; i < inst->type_argc; ++i)
3121 if (mini_is_gsharedvt_gparam (inst->type_argv [i]))
3128 is_open_method (MonoMethod *method)
3130 MonoGenericContext *context;
3132 if (!method->is_inflated)
3134 context = mono_method_get_context (method);
3135 if (context->class_inst && context->class_inst->is_open)
3137 if (context->method_inst && context->method_inst->is_open)
3143 mono_create_gc_safepoint (MonoCompile *cfg, MonoBasicBlock *bblock)
3145 MonoInst *poll_addr, *ins;
3146 if (cfg->verbose_level > 1)
3147 printf ("ADDING SAFE POINT TO BB %d\n", bblock->block_num);
3149 #if defined(__native_client_codegen__)
3150 NEW_AOTCONST (cfg, poll_addr, MONO_PATCH_INFO_GC_SAFE_POINT_FLAG, (gpointer)&__nacl_thread_suspension_needed);
3152 g_assert (mono_threads_is_coop_enabled ());
3153 NEW_AOTCONST (cfg, poll_addr, MONO_PATCH_INFO_GC_SAFE_POINT_FLAG, (gpointer)&mono_polling_required);
3156 MONO_INST_NEW (cfg, ins, OP_GC_SAFE_POINT);
3157 ins->sreg1 = poll_addr->dreg;
3159 if (bblock->flags & BB_EXCEPTION_HANDLER) {
3160 MonoInst *eh_op = bblock->code;
3162 if (eh_op && eh_op->opcode != OP_START_HANDLER && eh_op->opcode != OP_GET_EX_OBJ) {
3165 MonoInst *next_eh_op = eh_op ? eh_op->next : NULL;
3166 // skip all EH relateds ops
3167 while (next_eh_op && (next_eh_op->opcode == OP_START_HANDLER || next_eh_op->opcode == OP_GET_EX_OBJ)) {
3169 next_eh_op = eh_op->next;
3173 mono_bblock_insert_after_ins (bblock, eh_op, poll_addr);
3174 mono_bblock_insert_after_ins (bblock, poll_addr, ins);
3175 } else if (bblock == cfg->bb_entry) {
3176 mono_bblock_insert_after_ins (bblock, bblock->last_ins, poll_addr);
3177 mono_bblock_insert_after_ins (bblock, poll_addr, ins);
3180 mono_bblock_insert_before_ins (bblock, NULL, poll_addr);
3181 mono_bblock_insert_after_ins (bblock, poll_addr, ins);
3186 This code inserts safepoints into managed code at important code paths.
3189 -the first basic block
3190 -landing BB for exception handlers
3195 mono_insert_safepoints (MonoCompile *cfg)
3199 #if !defined(__native_client_codegen__)
3200 if (!mono_threads_is_coop_enabled ())
3204 if (cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
3205 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
3206 #if defined(__native_client__) || defined(__native_client_codegen__)
3207 gpointer poll_func = &mono_nacl_gc;
3209 g_assert (mono_threads_is_coop_enabled ());
3210 gpointer poll_func = &mono_threads_state_poll;
3213 if (info && info->subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER && info->d.icall.func == poll_func) {
3214 if (cfg->verbose_level > 1)
3215 printf ("SKIPPING SAFEPOINTS for the polling function icall\n");
3220 if (cfg->method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
3221 if (cfg->verbose_level > 1)
3222 printf ("SKIPPING SAFEPOINTS for native-to-managed wrappers.\n");
3226 if (cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
3227 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
3229 if (info && info->subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER &&
3230 (info->d.icall.func == mono_thread_interruption_checkpoint ||
3231 info->d.icall.func == mono_threads_finish_blocking ||
3232 info->d.icall.func == mono_threads_reset_blocking_start)) {
3233 /* These wrappers are called from the wrapper for the polling function, leading to potential stack overflow */
3234 if (cfg->verbose_level > 1)
3235 printf ("SKIPPING SAFEPOINTS for wrapper %s\n", cfg->method->name);
3240 if (cfg->verbose_level > 1)
3241 printf ("INSERTING SAFEPOINTS\n");
3242 if (cfg->verbose_level > 2)
3243 mono_print_code (cfg, "BEFORE SAFEPOINTS");
3245 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
3246 if (bb->loop_body_start || bb == cfg->bb_entry || bb->flags & BB_EXCEPTION_HANDLER)
3247 mono_create_gc_safepoint (cfg, bb);
3250 if (cfg->verbose_level > 2)
3251 mono_print_code (cfg, "AFTER SAFEPOINTS");
3257 mono_insert_branches_between_bblocks (MonoCompile *cfg)
3261 /* Add branches between non-consecutive bblocks */
3262 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
3263 if (bb->last_ins && MONO_IS_COND_BRANCH_OP (bb->last_ins) &&
3264 bb->last_ins->inst_false_bb && bb->next_bb != bb->last_ins->inst_false_bb) {
3265 /* we are careful when inverting, since bugs like #59580
3266 * could show up when dealing with NaNs.
3268 if (MONO_IS_COND_BRANCH_NOFP(bb->last_ins) && bb->next_bb == bb->last_ins->inst_true_bb) {
3269 MonoBasicBlock *tmp = bb->last_ins->inst_true_bb;
3270 bb->last_ins->inst_true_bb = bb->last_ins->inst_false_bb;
3271 bb->last_ins->inst_false_bb = tmp;
3273 bb->last_ins->opcode = mono_reverse_branch_op (bb->last_ins->opcode);
3275 MonoInst *inst = (MonoInst *)mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst));
3276 inst->opcode = OP_BR;
3277 inst->inst_target_bb = bb->last_ins->inst_false_bb;
3278 mono_bblock_add_inst (bb, inst);
3283 if (cfg->verbose_level >= 4) {
3284 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
3285 MonoInst *tree = bb->code;
3286 g_print ("DUMP BLOCK %d:\n", bb->block_num);
3289 for (; tree; tree = tree->next) {
3290 mono_print_ins_index (-1, tree);
3296 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
3297 bb->max_vreg = cfg->next_vreg;
3302 init_backend (MonoBackend *backend)
3304 #ifdef MONO_ARCH_NEED_GOT_VAR
3305 backend->need_got_var = 1;
3307 #ifdef MONO_ARCH_HAVE_CARD_TABLE_WBARRIER
3308 backend->have_card_table_wb = 1;
3310 #ifdef MONO_ARCH_HAVE_OP_GENERIC_CLASS_INIT
3311 backend->have_op_generic_class_init = 1;
3313 #ifdef MONO_ARCH_EMULATE_MUL_DIV
3314 backend->emulate_mul_div = 1;
3316 #ifdef MONO_ARCH_EMULATE_DIV
3317 backend->emulate_div = 1;
3319 #if !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
3320 backend->emulate_long_shift_opts = 1;
3322 #ifdef MONO_ARCH_HAVE_OBJC_GET_SELECTOR
3323 backend->have_objc_get_selector = 1;
3325 #ifdef MONO_ARCH_HAVE_GENERALIZED_IMT_THUNK
3326 backend->have_generalized_imt_thunk = 1;
3328 #ifdef MONO_ARCH_GSHARED_SUPPORTED
3329 backend->gshared_supported = 1;
3331 if (MONO_ARCH_HAVE_TLS_GET)
3332 backend->have_tls_get = 1;
3333 #ifdef MONO_ARCH_HAVE_TLS_GET_REG
3334 backend->have_tls_get_reg = 1;
3336 if (MONO_ARCH_USE_FPSTACK)
3337 backend->use_fpstack = 1;
3338 #ifdef MONO_ARCH_HAVE_LIVERANGE_OPS
3339 backend->have_liverange_ops = 1;
3341 #ifdef MONO_ARCH_HAVE_OP_TAIL_CALL
3342 backend->have_op_tail_call = 1;
3344 #ifndef MONO_ARCH_MONITOR_ENTER_ADJUSTMENT
3345 backend->monitor_enter_adjustment = 1;
3347 backend->monitor_enter_adjustment = MONO_ARCH_MONITOR_ENTER_ADJUSTMENT;
3349 #if defined(__mono_ilp32__)
3352 #ifdef MONO_ARCH_HAVE_DUMMY_INIT
3353 backend->have_dummy_init = 1;
3355 #ifdef MONO_ARCH_NEED_DIV_CHECK
3356 backend->need_div_check = 1;
3358 #ifdef NO_UNALIGNED_ACCESS
3359 backend->no_unaligned_access = 1;
3361 #ifdef MONO_ARCH_DYN_CALL_PARAM_AREA
3362 backend->dyn_call_param_area = MONO_ARCH_DYN_CALL_PARAM_AREA;
3367 * mini_method_compile:
3368 * @method: the method to compile
3369 * @opts: the optimization flags to use
3370 * @domain: the domain where the method will be compiled in
3371 * @flags: compilation flags
3372 * @parts: debug flag
3374 * Returns: a MonoCompile* pointer. Caller must check the exception_type
3375 * field in the returned struct to see if compilation succeded.
3378 mini_method_compile (MonoMethod *method, guint32 opts, MonoDomain *domain, JitFlags flags, int parts, int aot_method_index)
3380 MonoMethodHeader *header;
3381 MonoMethodSignature *sig;
3384 int i, code_size_ratio;
3385 gboolean try_generic_shared, try_llvm = FALSE;
3386 MonoMethod *method_to_compile, *method_to_register;
3387 gboolean method_is_gshared = FALSE;
3388 gboolean run_cctors = (flags & JIT_FLAG_RUN_CCTORS) ? 1 : 0;
3389 gboolean compile_aot = (flags & JIT_FLAG_AOT) ? 1 : 0;
3390 gboolean full_aot = (flags & JIT_FLAG_FULL_AOT) ? 1 : 0;
3391 gboolean disable_direct_icalls = (flags & JIT_FLAG_NO_DIRECT_ICALLS) ? 1 : 0;
3392 gboolean gsharedvt_method = FALSE;
3394 gboolean llvm = (flags & JIT_FLAG_LLVM) ? 1 : 0;
3396 static gboolean verbose_method_inited;
3397 static const char *verbose_method_name;
3399 InterlockedIncrement (&mono_jit_stats.methods_compiled);
3400 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION)
3401 mono_profiler_method_jit (method);
3402 if (MONO_METHOD_COMPILE_BEGIN_ENABLED ())
3403 MONO_PROBE_METHOD_COMPILE_BEGIN (method);
3405 gsharedvt_method = is_gsharedvt_method (method);
3408 * In AOT mode, method can be the following:
3409 * - a gsharedvt method.
3410 * - a method inflated with type parameters. This is for ref/partial sharing.
3411 * - a method inflated with concrete types.
3414 if (is_open_method (method)) {
3415 try_generic_shared = TRUE;
3416 method_is_gshared = TRUE;
3418 try_generic_shared = FALSE;
3420 g_assert (opts & MONO_OPT_GSHARED);
3422 try_generic_shared = mono_class_generic_sharing_enabled (method->klass) &&
3423 (opts & MONO_OPT_GSHARED) && mono_method_is_generic_sharable (method, FALSE);
3424 if (mini_is_gsharedvt_sharable_method (method)) {
3426 if (!mono_debug_count ())
3427 try_generic_shared = FALSE;
3433 if (try_generic_shared && !mono_debug_count ())
3434 try_generic_shared = FALSE;
3437 if (opts & MONO_OPT_GSHARED) {
3438 if (try_generic_shared)
3439 mono_stats.generics_sharable_methods++;
3440 else if (mono_method_is_generic_impl (method))
3441 mono_stats.generics_unsharable_methods++;
3445 try_llvm = mono_use_llvm || llvm;
3449 if (method_is_gshared) {
3450 method_to_compile = method;
3452 if (try_generic_shared) {
3453 method_to_compile = mini_get_shared_method (method);
3454 g_assert (method_to_compile);
3456 method_to_compile = method;
3460 cfg = g_new0 (MonoCompile, 1);
3461 cfg->method = method_to_compile;
3462 cfg->mempool = mono_mempool_new ();
3464 cfg->prof_options = mono_profiler_get_events ();
3465 cfg->run_cctors = run_cctors;
3466 cfg->domain = domain;
3467 cfg->verbose_level = mini_verbose;
3468 cfg->compile_aot = compile_aot;
3469 cfg->full_aot = full_aot;
3470 cfg->disable_omit_fp = debug_options.disable_omit_fp;
3471 cfg->skip_visibility = method->skip_visibility;
3472 cfg->orig_method = method;
3473 cfg->gen_seq_points = debug_options.gen_seq_points_compact_data || debug_options.gen_sdb_seq_points;
3474 cfg->gen_sdb_seq_points = debug_options.gen_sdb_seq_points;
3475 cfg->llvm_only = (flags & JIT_FLAG_LLVM_ONLY) != 0;
3476 cfg->backend = current_backend;
3478 #ifdef PLATFORM_ANDROID
3479 if (cfg->method->wrapper_type != MONO_WRAPPER_NONE) {
3480 /* FIXME: Why is this needed */
3481 cfg->gen_seq_points = FALSE;
3482 cfg->gen_sdb_seq_points = FALSE;
3485 /* coop / nacl requires loop detection to happen */
3486 #if defined(__native_client_codegen__)
3487 cfg->opt |= MONO_OPT_LOOP;
3489 if (mono_threads_is_coop_enabled ())
3490 cfg->opt |= MONO_OPT_LOOP;
3492 cfg->explicit_null_checks = debug_options.explicit_null_checks || (flags & JIT_FLAG_EXPLICIT_NULL_CHECKS);
3493 cfg->soft_breakpoints = debug_options.soft_breakpoints;
3494 cfg->check_pinvoke_callconv = debug_options.check_pinvoke_callconv;
3495 cfg->disable_direct_icalls = disable_direct_icalls;
3496 if (try_generic_shared)
3497 cfg->gshared = TRUE;
3498 cfg->compile_llvm = try_llvm;
3499 cfg->token_info_hash = g_hash_table_new (NULL, NULL);
3500 if (cfg->compile_aot)
3501 cfg->method_index = aot_method_index;
3504 if (!mono_debug_count ())
3505 cfg->opt &= ~MONO_OPT_FLOAT32;
3508 cfg->opt &= ~MONO_OPT_SIMD;
3509 cfg->r4fp = (cfg->opt & MONO_OPT_FLOAT32) ? 1 : 0;
3510 cfg->r4_stack_type = cfg->r4fp ? STACK_R4 : STACK_R8;
3512 if (cfg->gen_seq_points)
3513 cfg->seq_points = g_ptr_array_new ();
3514 mono_error_init (&cfg->error);
3516 if (cfg->compile_aot && !try_generic_shared && (method->is_generic || method->klass->generic_container || method_is_gshared)) {
3517 cfg->exception_type = MONO_EXCEPTION_GENERIC_SHARING_FAILED;
3521 if (cfg->gshared && (gsharedvt_method || mini_is_gsharedvt_sharable_method (method))) {
3522 MonoMethodInflated *inflated;
3523 MonoGenericContext *context;
3525 if (gsharedvt_method) {
3526 g_assert (method->is_inflated);
3527 inflated = (MonoMethodInflated*)method;
3528 context = &inflated->context;
3530 /* We are compiling a gsharedvt method directly */
3531 g_assert (compile_aot);
3533 g_assert (method_to_compile->is_inflated);
3534 inflated = (MonoMethodInflated*)method_to_compile;
3535 context = &inflated->context;
3538 mini_init_gsctx (NULL, cfg->mempool, context, &cfg->gsctx);
3539 cfg->gsctx_context = context;
3541 cfg->gsharedvt = TRUE;
3542 if (!cfg->llvm_only) {
3543 cfg->disable_llvm = TRUE;
3544 cfg->exception_message = g_strdup ("gsharedvt");
3549 method_to_register = method_to_compile;
3551 g_assert (method == method_to_compile);
3552 method_to_register = method;
3554 cfg->method_to_register = method_to_register;
3556 mono_error_init (&err);
3557 sig = mono_method_signature_checked (cfg->method, &err);
3559 cfg->exception_type = MONO_EXCEPTION_TYPE_LOAD;
3560 cfg->exception_message = g_strdup (mono_error_get_message (&err));
3561 mono_error_cleanup (&err);
3562 if (MONO_METHOD_COMPILE_END_ENABLED ())
3563 MONO_PROBE_METHOD_COMPILE_END (method, FALSE);
3567 header = cfg->header = mono_method_get_header_checked (cfg->method, &cfg->error);
3569 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
3570 if (MONO_METHOD_COMPILE_END_ENABLED ())
3571 MONO_PROBE_METHOD_COMPILE_END (method, FALSE);
3577 static gboolean inited;
3583 * Check for methods which cannot be compiled by LLVM early, to avoid
3584 * the extra compilation pass.
3586 if (COMPILE_LLVM (cfg)) {
3587 mono_llvm_check_method_supported (cfg);
3588 if (cfg->disable_llvm) {
3589 if (cfg->verbose_level >= (cfg->llvm_only ? 0 : 1)) {
3590 //nm = mono_method_full_name (cfg->method, TRUE);
3591 printf ("LLVM failed for '%s': %s\n", method->name, cfg->exception_message);
3594 if (cfg->llvm_only) {
3595 cfg->disable_aot = TRUE;
3598 mono_destroy_compile (cfg);
3600 goto restart_compile;
3606 /* The debugger has no liveness information, so avoid sharing registers/stack slots */
3607 if (debug_options.mdb_optimizations) {
3608 cfg->disable_reuse_registers = TRUE;
3609 cfg->disable_reuse_stack_slots = TRUE;
3611 * This decreases the change the debugger will read registers/stack slots which are
3612 * not yet initialized.
3614 cfg->disable_initlocals_opt = TRUE;
3616 cfg->extend_live_ranges = TRUE;
3618 /* The debugger needs all locals to be on the stack or in a global register */
3619 cfg->disable_vreg_to_lvreg = TRUE;
3621 /* Don't remove unused variables when running inside the debugger since the user
3622 * may still want to view them. */
3623 cfg->disable_deadce_vars = TRUE;
3625 cfg->opt &= ~MONO_OPT_DEADCE;
3626 cfg->opt &= ~MONO_OPT_INLINE;
3627 cfg->opt &= ~MONO_OPT_COPYPROP;
3628 cfg->opt &= ~MONO_OPT_CONSPROP;
3630 /* This is needed for the soft debugger, which doesn't like code after the epilog */
3631 cfg->disable_out_of_line_bblocks = TRUE;
3634 if (mono_using_xdebug) {
3636 * Make each variable use its own register/stack slot and extend
3637 * their liveness to cover the whole method, making them displayable
3638 * in gdb even after they are dead.
3640 cfg->disable_reuse_registers = TRUE;
3641 cfg->disable_reuse_stack_slots = TRUE;
3642 cfg->extend_live_ranges = TRUE;
3643 cfg->compute_precise_live_ranges = TRUE;
3646 mini_gc_init_cfg (cfg);
3648 if (COMPILE_LLVM (cfg)) {
3649 cfg->opt |= MONO_OPT_ABCREM;
3652 if (!verbose_method_inited) {
3653 verbose_method_name = g_getenv ("MONO_VERBOSE_METHOD");
3654 verbose_method_inited = TRUE;
3656 if (verbose_method_name) {
3657 const char *name = verbose_method_name;
3659 if ((strchr (name, '.') > name) || strchr (name, ':')) {
3660 MonoMethodDesc *desc;
3662 desc = mono_method_desc_new (name, TRUE);
3663 if (mono_method_desc_full_match (desc, cfg->method)) {
3664 cfg->verbose_level = 4;
3666 mono_method_desc_free (desc);
3668 if (strcmp (cfg->method->name, name) == 0)
3669 cfg->verbose_level = 4;
3673 cfg->intvars = (guint16 *)mono_mempool_alloc0 (cfg->mempool, sizeof (guint16) * STACK_MAX * header->max_stack);
3675 if (cfg->verbose_level > 0) {
3678 method_name = mono_method_get_full_name (method);
3679 g_print ("converting %s%s%smethod %s\n", COMPILE_LLVM (cfg) ? "llvm " : "", cfg->gsharedvt ? "gsharedvt " : "", (cfg->gshared && !cfg->gsharedvt) ? "gshared " : "", method_name);
3681 if (COMPILE_LLVM (cfg))
3682 g_print ("converting llvm method %s\n", method_name = mono_method_full_name (method, TRUE));
3683 else if (cfg->gsharedvt)
3684 g_print ("converting gsharedvt method %s\n", method_name = mono_method_full_name (method_to_compile, TRUE));
3685 else if (cfg->gshared)
3686 g_print ("converting shared method %s\n", method_name = mono_method_full_name (method_to_compile, TRUE));
3688 g_print ("converting method %s\n", method_name = mono_method_full_name (method, TRUE));
3690 g_free (method_name);
3693 if (cfg->opt & MONO_OPT_ABCREM)
3694 cfg->opt |= MONO_OPT_SSA;
3696 cfg->rs = mono_regstate_new ();
3697 cfg->next_vreg = cfg->rs->next_vreg;
3699 /* FIXME: Fix SSA to handle branches inside bblocks */
3700 if (cfg->opt & MONO_OPT_SSA)
3701 cfg->enable_extended_bblocks = FALSE;
3704 * FIXME: This confuses liveness analysis because variables which are assigned after
3705 * a branch inside a bblock become part of the kill set, even though the assignment
3706 * might not get executed. This causes the optimize_initlocals pass to delete some
3707 * assignments which are needed.
3708 * Also, the mono_if_conversion pass needs to be modified to recognize the code
3711 //cfg->enable_extended_bblocks = TRUE;
3713 /*We must verify the method before doing any IR generation as mono_compile_create_vars can assert.*/
3714 if (mono_compile_is_broken (cfg, cfg->method, TRUE)) {
3715 if (mini_get_debug_options ()->break_on_unverified)
3721 * create MonoInst* which represents arguments and local variables
3723 mono_compile_create_vars (cfg);
3725 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));
3728 if (try_generic_shared && cfg->exception_type == MONO_EXCEPTION_GENERIC_SHARING_FAILED) {
3730 if (MONO_METHOD_COMPILE_END_ENABLED ())
3731 MONO_PROBE_METHOD_COMPILE_END (method, FALSE);
3734 mono_destroy_compile (cfg);
3735 try_generic_shared = FALSE;
3736 goto restart_compile;
3738 g_assert (cfg->exception_type != MONO_EXCEPTION_GENERIC_SHARING_FAILED);
3740 if (MONO_METHOD_COMPILE_END_ENABLED ())
3741 MONO_PROBE_METHOD_COMPILE_END (method, FALSE);
3742 /* cfg contains the details of the failure, so let the caller cleanup */
3746 cfg->stat_basic_blocks += cfg->num_bblocks;
3748 if (COMPILE_LLVM (cfg)) {
3751 /* The IR has to be in SSA form for LLVM */
3752 cfg->opt |= MONO_OPT_SSA;
3756 // Allow SSA on the result value
3757 cfg->ret->flags &= ~MONO_INST_VOLATILE;
3759 // Add an explicit return instruction referencing the return value
3760 MONO_INST_NEW (cfg, ins, OP_SETRET);
3761 ins->sreg1 = cfg->ret->dreg;
3763 MONO_ADD_INS (cfg->bb_exit, ins);
3766 cfg->opt &= ~MONO_OPT_LINEARS;
3769 cfg->opt &= ~MONO_OPT_BRANCH;
3772 /* todo: remove code when we have verified that the liveness for try/catch blocks
3776 * Currently, this can't be commented out since exception blocks are not
3777 * processed during liveness analysis.
3778 * It is also needed, because otherwise the local optimization passes would
3779 * delete assignments in cases like this:
3781 * <something which throws>
3783 * This also allows SSA to be run on methods containing exception clauses, since
3784 * SSA will ignore variables marked VOLATILE.
3786 MONO_TIME_TRACK (mono_jit_stats.jit_liveness_handle_exception_clauses, mono_liveness_handle_exception_clauses (cfg));
3788 MONO_TIME_TRACK (mono_jit_stats.jit_handle_out_of_line_bblock, mono_handle_out_of_line_bblock (cfg));
3790 /*g_print ("numblocks = %d\n", cfg->num_bblocks);*/
3792 if (!COMPILE_LLVM (cfg)) {
3793 MONO_TIME_TRACK (mono_jit_stats.jit_decompose_long_opts, mono_decompose_long_opts (cfg));
3796 /* Should be done before branch opts */
3797 if (cfg->opt & (MONO_OPT_CONSPROP | MONO_OPT_COPYPROP))
3798 MONO_TIME_TRACK (mono_jit_stats.jit_local_cprop, mono_local_cprop (cfg));
3801 * Should be done after cprop which can do strength reduction on
3802 * some of these ops, after propagating immediates.
3804 if (cfg->has_emulated_ops)
3805 MONO_TIME_TRACK (mono_jit_stats.jit_local_emulate_ops, mono_local_emulate_ops (cfg));
3807 if (cfg->opt & MONO_OPT_BRANCH)
3808 MONO_TIME_TRACK (mono_jit_stats.jit_optimize_branches, mono_optimize_branches (cfg));
3810 /* This must be done _before_ global reg alloc and _after_ decompose */
3811 MONO_TIME_TRACK (mono_jit_stats.jit_handle_global_vregs, mono_handle_global_vregs (cfg));
3812 if (cfg->opt & MONO_OPT_DEADCE)
3813 MONO_TIME_TRACK (mono_jit_stats.jit_local_deadce, mono_local_deadce (cfg));
3814 if (cfg->opt & MONO_OPT_ALIAS_ANALYSIS)
3815 MONO_TIME_TRACK (mono_jit_stats.jit_local_alias_analysis, mono_local_alias_analysis (cfg));
3816 /* Disable this for LLVM to make the IR easier to handle */
3817 if (!COMPILE_LLVM (cfg))
3818 MONO_TIME_TRACK (mono_jit_stats.jit_if_conversion, mono_if_conversion (cfg));
3820 mono_threads_safepoint ();
3822 MONO_TIME_TRACK (mono_jit_stats.jit_bb_ordering, mono_bb_ordering (cfg));
3824 if (((cfg->num_varinfo > 2000) || (cfg->num_bblocks > 1000)) && !cfg->compile_aot) {
3826 * we disable some optimizations if there are too many variables
3827 * because JIT time may become too expensive. The actual number needs
3828 * to be tweaked and eventually the non-linear algorithms should be fixed.
3830 cfg->opt &= ~ (MONO_OPT_LINEARS | MONO_OPT_COPYPROP | MONO_OPT_CONSPROP);
3831 cfg->disable_ssa = TRUE;
3834 if (cfg->opt & MONO_OPT_LOOP) {
3835 MONO_TIME_TRACK (mono_jit_stats.jit_compile_dominator_info, mono_compile_dominator_info (cfg, MONO_COMP_DOM | MONO_COMP_IDOM));
3836 MONO_TIME_TRACK (mono_jit_stats.jit_compute_natural_loops, mono_compute_natural_loops (cfg));
3839 MONO_TIME_TRACK (mono_jit_stats.jit_insert_safepoints, mono_insert_safepoints (cfg));
3841 /* after method_to_ir */
3843 if (MONO_METHOD_COMPILE_END_ENABLED ())
3844 MONO_PROBE_METHOD_COMPILE_END (method, TRUE);
3849 if (header->num_clauses)
3850 cfg->disable_ssa = TRUE;
3853 //#define DEBUGSSA "logic_run"
3854 //#define DEBUGSSA_CLASS "Tests"
3857 if (!cfg->disable_ssa) {
3858 mono_local_cprop (cfg);
3861 mono_ssa_compute (cfg);
3865 if (cfg->opt & MONO_OPT_SSA) {
3866 if (!(cfg->comp_done & MONO_COMP_SSA) && !cfg->disable_ssa) {
3868 MONO_TIME_TRACK (mono_jit_stats.jit_ssa_compute, mono_ssa_compute (cfg));
3871 if (cfg->verbose_level >= 2) {
3878 /* after SSA translation */
3880 if (MONO_METHOD_COMPILE_END_ENABLED ())
3881 MONO_PROBE_METHOD_COMPILE_END (method, TRUE);
3885 if ((cfg->opt & MONO_OPT_CONSPROP) || (cfg->opt & MONO_OPT_COPYPROP)) {
3886 if (cfg->comp_done & MONO_COMP_SSA && !COMPILE_LLVM (cfg)) {
3888 MONO_TIME_TRACK (mono_jit_stats.jit_ssa_cprop, mono_ssa_cprop (cfg));
3894 if (cfg->comp_done & MONO_COMP_SSA && !COMPILE_LLVM (cfg)) {
3895 //mono_ssa_strength_reduction (cfg);
3897 if (cfg->opt & MONO_OPT_DEADCE)
3898 MONO_TIME_TRACK (mono_jit_stats.jit_ssa_deadce, mono_ssa_deadce (cfg));
3900 if ((cfg->flags & (MONO_CFG_HAS_LDELEMA|MONO_CFG_HAS_CHECK_THIS)) && (cfg->opt & MONO_OPT_ABCREM))
3901 MONO_TIME_TRACK (mono_jit_stats.jit_perform_abc_removal, mono_perform_abc_removal (cfg));
3903 MONO_TIME_TRACK (mono_jit_stats.jit_ssa_remove, mono_ssa_remove (cfg));
3904 MONO_TIME_TRACK (mono_jit_stats.jit_local_cprop2, mono_local_cprop (cfg));
3905 MONO_TIME_TRACK (mono_jit_stats.jit_handle_global_vregs2, mono_handle_global_vregs (cfg));
3906 if (cfg->opt & MONO_OPT_DEADCE)
3907 MONO_TIME_TRACK (mono_jit_stats.jit_local_deadce2, mono_local_deadce (cfg));
3909 if (cfg->opt & MONO_OPT_BRANCH)
3910 MONO_TIME_TRACK (mono_jit_stats.jit_optimize_branches2, mono_optimize_branches (cfg));
3914 if (cfg->comp_done & MONO_COMP_SSA && COMPILE_LLVM (cfg)) {
3915 mono_ssa_loop_invariant_code_motion (cfg);
3916 /* This removes MONO_INST_FAULT flags too so perform it unconditionally */
3917 if (cfg->opt & MONO_OPT_ABCREM)
3918 mono_perform_abc_removal (cfg);
3921 /* after SSA removal */
3923 if (MONO_METHOD_COMPILE_END_ENABLED ())
3924 MONO_PROBE_METHOD_COMPILE_END (method, TRUE);
3928 if (cfg->llvm_only && cfg->gsharedvt)
3929 mono_ssa_remove_gsharedvt (cfg);
3931 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
3932 if (COMPILE_SOFT_FLOAT (cfg))
3933 mono_decompose_soft_float (cfg);
3935 MONO_TIME_TRACK (mono_jit_stats.jit_decompose_vtype_opts, mono_decompose_vtype_opts (cfg));
3936 if (cfg->flags & MONO_CFG_HAS_ARRAY_ACCESS)
3937 MONO_TIME_TRACK (mono_jit_stats.jit_decompose_array_access_opts, mono_decompose_array_access_opts (cfg));
3940 #ifndef MONO_ARCH_GOT_REG
3945 g_assert (cfg->got_var_allocated);
3948 * Allways allocate the GOT var to a register, because keeping it
3949 * in memory will increase the number of live temporaries in some
3950 * code created by inssel.brg, leading to the well known spills+
3951 * branches problem. Testcase: mcs crash in
3952 * System.MonoCustomAttrs:GetCustomAttributes.
3954 #ifdef MONO_ARCH_GOT_REG
3955 got_reg = MONO_ARCH_GOT_REG;
3957 regs = mono_arch_get_global_int_regs (cfg);
3959 got_reg = GPOINTER_TO_INT (regs->data);
3962 cfg->got_var->opcode = OP_REGVAR;
3963 cfg->got_var->dreg = got_reg;
3964 cfg->used_int_regs |= 1LL << cfg->got_var->dreg;
3968 * Have to call this again to process variables added since the first call.
3970 MONO_TIME_TRACK(mono_jit_stats.jit_liveness_handle_exception_clauses2, mono_liveness_handle_exception_clauses (cfg));
3972 if (cfg->opt & MONO_OPT_LINEARS) {
3973 GList *vars, *regs, *l;
3975 /* fixme: maybe we can avoid to compute livenesss here if already computed ? */
3976 cfg->comp_done &= ~MONO_COMP_LIVENESS;
3977 if (!(cfg->comp_done & MONO_COMP_LIVENESS))
3978 MONO_TIME_TRACK (mono_jit_stats.jit_analyze_liveness, mono_analyze_liveness (cfg));
3980 if ((vars = mono_arch_get_allocatable_int_vars (cfg))) {
3981 regs = mono_arch_get_global_int_regs (cfg);
3982 /* Remove the reg reserved for holding the GOT address */
3984 for (l = regs; l; l = l->next) {
3985 if (GPOINTER_TO_UINT (l->data) == cfg->got_var->dreg) {
3986 regs = g_list_delete_link (regs, l);
3991 MONO_TIME_TRACK (mono_jit_stats.jit_linear_scan, mono_linear_scan (cfg, vars, regs, &cfg->used_int_regs));
3995 //mono_print_code (cfg, "");
3999 /* variables are allocated after decompose, since decompose could create temps */
4000 if (!COMPILE_LLVM (cfg)) {
4001 MONO_TIME_TRACK (mono_jit_stats.jit_arch_allocate_vars, mono_arch_allocate_vars (cfg));
4002 if (cfg->exception_type)
4007 mono_allocate_gsharedvt_vars (cfg);
4009 if (!COMPILE_LLVM (cfg)) {
4010 gboolean need_local_opts;
4011 MONO_TIME_TRACK (mono_jit_stats.jit_spill_global_vars, mono_spill_global_vars (cfg, &need_local_opts));
4013 if (need_local_opts || cfg->compile_aot) {
4014 /* To optimize code created by spill_global_vars */
4015 MONO_TIME_TRACK (mono_jit_stats.jit_local_cprop3, mono_local_cprop (cfg));
4016 if (cfg->opt & MONO_OPT_DEADCE)
4017 MONO_TIME_TRACK (mono_jit_stats.jit_local_deadce3, mono_local_deadce (cfg));
4021 mono_insert_branches_between_bblocks (cfg);
4023 if (COMPILE_LLVM (cfg)) {
4027 /* The IR has to be in SSA form for LLVM */
4028 if (!(cfg->comp_done & MONO_COMP_SSA)) {
4029 cfg->exception_message = g_strdup ("SSA disabled.");
4030 cfg->disable_llvm = TRUE;
4033 if (cfg->flags & MONO_CFG_HAS_ARRAY_ACCESS)
4034 mono_decompose_array_access_opts (cfg);
4036 if (!cfg->disable_llvm)
4037 mono_llvm_emit_method (cfg);
4038 if (cfg->disable_llvm) {
4039 if (cfg->verbose_level >= (cfg->llvm_only ? 0 : 1)) {
4040 //nm = mono_method_full_name (cfg->method, TRUE);
4041 printf ("LLVM failed for '%s': %s\n", method->name, cfg->exception_message);
4044 if (cfg->llvm_only) {
4045 cfg->disable_aot = TRUE;
4048 mono_destroy_compile (cfg);
4050 goto restart_compile;
4053 if (cfg->verbose_level > 0 && !cfg->compile_aot) {
4054 nm = mono_method_full_name (cfg->method, TRUE);
4055 g_print ("LLVM Method %s emitted at %p to %p (code length %d) [%s]\n",
4057 cfg->native_code, cfg->native_code + cfg->code_len, cfg->code_len, cfg->domain->friendly_name);
4062 MONO_TIME_TRACK (mono_jit_stats.jit_codegen, mono_codegen (cfg));
4063 if (cfg->exception_type)
4067 if (COMPILE_LLVM (cfg))
4068 InterlockedIncrement (&mono_jit_stats.methods_with_llvm);
4070 InterlockedIncrement (&mono_jit_stats.methods_without_llvm);
4072 MONO_TIME_TRACK (mono_jit_stats.jit_create_jit_info, cfg->jit_info = create_jit_info (cfg, method_to_compile));
4074 #ifdef MONO_ARCH_HAVE_LIVERANGE_OPS
4075 if (cfg->extend_live_ranges) {
4076 /* Extend live ranges to cover the whole method */
4077 for (i = 0; i < cfg->num_varinfo; ++i)
4078 MONO_VARINFO (cfg, i)->live_range_end = cfg->code_len;
4082 if (!cfg->compile_aot)
4083 mono_save_xdebug_info (cfg);
4085 MONO_TIME_TRACK (mono_jit_stats.jit_gc_create_gc_map, mini_gc_create_gc_map (cfg));
4087 MONO_TIME_TRACK (mono_jit_stats.jit_save_seq_point_info, mono_save_seq_point_info (cfg));
4089 if (cfg->verbose_level >= 2) {
4090 char *id = mono_method_full_name (cfg->method, FALSE);
4091 mono_disassemble_code (cfg, cfg->native_code, cfg->code_len, id + 3);
4095 if (!cfg->compile_aot) {
4096 mono_domain_lock (cfg->domain);
4097 mono_jit_info_table_add (cfg->domain, cfg->jit_info);
4099 if (cfg->method->dynamic)
4100 mono_dynamic_code_hash_lookup (cfg->domain, cfg->method)->ji = cfg->jit_info;
4101 mono_domain_unlock (cfg->domain);
4106 printf ("GSHAREDVT: %s\n", mono_method_full_name (cfg->method, TRUE));
4109 /* collect statistics */
4110 #ifndef DISABLE_PERFCOUNTERS
4111 mono_perfcounters->jit_methods++;
4112 mono_perfcounters->jit_bytes += header->code_size;
4114 mono_jit_stats.allocated_code_size += cfg->code_len;
4115 code_size_ratio = cfg->code_len;
4116 if (code_size_ratio > mono_jit_stats.biggest_method_size && mono_jit_stats.enabled) {
4117 mono_jit_stats.biggest_method_size = code_size_ratio;
4118 g_free (mono_jit_stats.biggest_method);
4119 mono_jit_stats.biggest_method = g_strdup_printf ("%s::%s)", method->klass->name, method->name);
4121 code_size_ratio = (code_size_ratio * 100) / header->code_size;
4122 if (code_size_ratio > mono_jit_stats.max_code_size_ratio && mono_jit_stats.enabled) {
4123 mono_jit_stats.max_code_size_ratio = code_size_ratio;
4124 g_free (mono_jit_stats.max_ratio_method);
4125 mono_jit_stats.max_ratio_method = g_strdup_printf ("%s::%s)", method->klass->name, method->name);
4127 mono_jit_stats.native_code_size += cfg->code_len;
4129 if (MONO_METHOD_COMPILE_END_ENABLED ())
4130 MONO_PROBE_METHOD_COMPILE_END (method, TRUE);
4136 mono_arch_instrument_epilog (MonoCompile *cfg, void *func, void *p, gboolean enable_arguments)
4138 return mono_arch_instrument_epilog_full (cfg, func, p, enable_arguments, FALSE);
4142 mono_cfg_add_try_hole (MonoCompile *cfg, MonoExceptionClause *clause, guint8 *start, MonoBasicBlock *bb)
4144 TryBlockHole *hole = (TryBlockHole *)mono_mempool_alloc (cfg->mempool, sizeof (TryBlockHole));
4145 hole->clause = clause;
4146 hole->start_offset = start - cfg->native_code;
4147 hole->basic_block = bb;
4149 cfg->try_block_holes = g_slist_append_mempool (cfg->mempool, cfg->try_block_holes, hole);
4153 mono_cfg_set_exception (MonoCompile *cfg, int type)
4155 cfg->exception_type = type;
4158 /* Assumes ownership of the MSG argument */
4160 mono_cfg_set_exception_invalid_program (MonoCompile *cfg, char *msg)
4162 mono_cfg_set_exception (cfg, MONO_EXCEPTION_MONO_ERROR);
4163 mono_error_set_generic_error (&cfg->error, "System", "InvalidProgramException", msg);
4166 #endif /* DISABLE_JIT */
4169 create_jit_info_for_trampoline (MonoMethod *wrapper, MonoTrampInfo *info)
4171 MonoDomain *domain = mono_get_root_domain ();
4176 if (info->uw_info) {
4177 uw_info = info->uw_info;
4178 info_len = info->uw_info_len;
4180 uw_info = mono_unwind_ops_encode (info->unwind_ops, &info_len);
4183 jinfo = (MonoJitInfo *)mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO);
4184 jinfo->d.method = wrapper;
4185 jinfo->code_start = info->code;
4186 jinfo->code_size = info->code_size;
4187 jinfo->unwind_info = mono_cache_unwind_info (uw_info, info_len);
4195 GTimer *mono_time_track_start ()
4197 return g_timer_new ();
4200 void mono_time_track_end (double *time, GTimer *timer)
4202 g_timer_stop (timer);
4203 *time += g_timer_elapsed (timer, NULL);
4204 g_timer_destroy (timer);
4207 void mono_update_jit_stats (MonoCompile *cfg)
4209 mono_jit_stats.allocate_var += cfg->stat_allocate_var;
4210 mono_jit_stats.locals_stack_size += cfg->stat_locals_stack_size;
4211 mono_jit_stats.basic_blocks += cfg->stat_basic_blocks;
4212 mono_jit_stats.max_basic_blocks = MAX (cfg->stat_basic_blocks, mono_jit_stats.max_basic_blocks);
4213 mono_jit_stats.cil_code_size += cfg->stat_cil_code_size;
4214 mono_jit_stats.regvars += cfg->stat_n_regvars;
4215 mono_jit_stats.inlineable_methods += cfg->stat_inlineable_methods;
4216 mono_jit_stats.inlined_methods += cfg->stat_inlined_methods;
4217 mono_jit_stats.code_reallocs += cfg->stat_code_reallocs;
4221 * mono_jit_compile_method_inner:
4223 * Main entry point for the JIT.
4226 mono_jit_compile_method_inner (MonoMethod *method, MonoDomain *target_domain, int opt, MonoError *error)
4229 gpointer code = NULL;
4230 MonoJitInfo *jinfo, *info;
4232 MonoException *ex = NULL;
4233 guint32 prof_options;
4235 MonoMethod *prof_method, *shared;
4237 mono_error_init (error);
4239 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
4240 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
4242 MonoMethodPInvoke* piinfo = (MonoMethodPInvoke *) method;
4244 if (!piinfo->addr) {
4245 if (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
4246 piinfo->addr = mono_lookup_internal_call (method);
4247 else if (method->iflags & METHOD_IMPL_ATTRIBUTE_NATIVE)
4249 g_warning ("Method '%s' in assembly '%s' contains native code that cannot be executed by Mono in modules loaded from byte arrays. The assembly was probably created using C++/CLI.\n", mono_method_full_name (method, TRUE), method->klass->image->name);
4251 g_warning ("Method '%s' in assembly '%s' contains native code that cannot be executed by Mono on this platform. The assembly was probably created using C++/CLI.\n", mono_method_full_name (method, TRUE), method->klass->image->name);
4254 mono_lookup_pinvoke_call (method, NULL, NULL);
4256 nm = mono_marshal_get_native_wrapper (method, TRUE, mono_aot_only);
4257 code = mono_get_addr_from_ftnptr (mono_compile_method (nm));
4258 jinfo = mono_jit_info_table_find (target_domain, (char *)code);
4260 jinfo = mono_jit_info_table_find (mono_domain_get (), (char *)code);
4262 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
4264 } else if ((method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME)) {
4265 const char *name = method->name;
4266 char *full_name, *msg;
4269 if (method->klass->parent == mono_defaults.multicastdelegate_class) {
4270 if (*name == '.' && (strcmp (name, ".ctor") == 0)) {
4271 MonoJitICallInfo *mi = mono_find_jit_icall_by_name ("mono_delegate_ctor");
4274 * We need to make sure this wrapper
4275 * is compiled because it might end up
4276 * in an (M)RGCTX if generic sharing
4277 * is enabled, and would be called
4278 * indirectly. If it were a
4279 * trampoline we'd try to patch that
4280 * indirect call, which is not
4283 return mono_get_addr_from_ftnptr ((gpointer)mono_icall_get_wrapper_full (mi, TRUE));
4284 } else if (*name == 'I' && (strcmp (name, "Invoke") == 0)) {
4285 if (mono_llvm_only) {
4286 nm = mono_marshal_get_delegate_invoke (method, NULL);
4287 return mono_get_addr_from_ftnptr (mono_compile_method (nm));
4289 return mono_create_delegate_trampoline (target_domain, method->klass);
4290 } else if (*name == 'B' && (strcmp (name, "BeginInvoke") == 0)) {
4291 nm = mono_marshal_get_delegate_begin_invoke (method);
4292 return mono_get_addr_from_ftnptr (mono_compile_method (nm));
4293 } else if (*name == 'E' && (strcmp (name, "EndInvoke") == 0)) {
4294 nm = mono_marshal_get_delegate_end_invoke (method);
4295 return mono_get_addr_from_ftnptr (mono_compile_method (nm));
4299 full_name = mono_method_full_name (method, TRUE);
4300 msg = g_strdup_printf ("Unrecognizable runtime implemented method '%s'", full_name);
4301 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "InvalidProgramException", msg);
4302 mono_error_set_exception_instance (error, ex);
4308 if (method->wrapper_type == MONO_WRAPPER_UNKNOWN) {
4309 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
4311 if (info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN || info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) {
4312 static MonoTrampInfo *in_tinfo, *out_tinfo;
4313 MonoTrampInfo *tinfo;
4315 gboolean is_in = info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN;
4317 if (is_in && in_tinfo)
4318 return in_tinfo->code;
4319 else if (!is_in && out_tinfo)
4320 return out_tinfo->code;
4323 * This is a special wrapper whose body is implemented in assembly, like a trampoline. We use a wrapper so EH
4325 * FIXME: The caller signature doesn't match the callee, which might cause problems on some platforms
4328 mono_aot_get_trampoline_full (is_in ? "gsharedvt_trampoline" : "gsharedvt_out_trampoline", &tinfo);
4330 mono_arch_get_gsharedvt_trampoline (&tinfo, FALSE);
4331 jinfo = create_jit_info_for_trampoline (method, tinfo);
4332 mono_jit_info_table_add (mono_get_root_domain (), jinfo);
4341 if (mono_aot_only) {
4342 char *fullname = mono_method_full_name (method, TRUE);
4343 char *msg = g_strdup_printf ("Attempting to JIT compile method '%s' while running with --aot-only. See http://docs.xamarin.com/ios/about/limitations for more information.\n", fullname);
4345 ex = mono_get_exception_execution_engine (msg);
4346 mono_error_set_exception_instance (error, ex);
4353 jit_timer = mono_time_track_start ();
4354 cfg = mini_method_compile (method, opt, target_domain, JIT_FLAG_RUN_CCTORS, 0, -1);
4355 mono_time_track_end (&mono_jit_stats.jit_time, jit_timer);
4357 prof_method = cfg->method;
4359 switch (cfg->exception_type) {
4360 case MONO_EXCEPTION_NONE:
4362 case MONO_EXCEPTION_TYPE_LOAD:
4363 case MONO_EXCEPTION_MISSING_FIELD:
4364 case MONO_EXCEPTION_MISSING_METHOD:
4365 case MONO_EXCEPTION_FILE_NOT_FOUND:
4366 case MONO_EXCEPTION_BAD_IMAGE:
4367 case MONO_EXCEPTION_INVALID_PROGRAM: {
4368 /* Throw a type load exception if needed */
4369 if (cfg->exception_ptr) {
4370 ex = mono_class_get_exception_for_failure ((MonoClass *)cfg->exception_ptr);
4372 if (cfg->exception_type == MONO_EXCEPTION_MISSING_FIELD)
4373 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "MissingFieldException", cfg->exception_message);
4374 else if (cfg->exception_type == MONO_EXCEPTION_MISSING_METHOD)
4375 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "MissingMethodException", cfg->exception_message);
4376 else if (cfg->exception_type == MONO_EXCEPTION_TYPE_LOAD)
4377 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "TypeLoadException", cfg->exception_message);
4378 else if (cfg->exception_type == MONO_EXCEPTION_FILE_NOT_FOUND)
4379 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System.IO", "FileNotFoundException", cfg->exception_message);
4380 else if (cfg->exception_type == MONO_EXCEPTION_BAD_IMAGE)
4381 ex = mono_get_exception_bad_image_format (cfg->exception_message);
4382 else if (cfg->exception_type == MONO_EXCEPTION_INVALID_PROGRAM)
4383 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "InvalidProgramException", cfg->exception_message);
4385 g_assert_not_reached ();
4389 case MONO_EXCEPTION_MONO_ERROR:
4390 // FIXME: MonoError has no copy ctor
4391 g_assert (!mono_error_ok (&cfg->error));
4392 ex = mono_error_convert_to_exception (&cfg->error);
4395 g_assert_not_reached ();
4399 if (cfg->prof_options & MONO_PROFILE_JIT_COMPILATION)
4400 mono_profiler_method_end_jit (method, NULL, MONO_PROFILE_FAILED);
4402 mono_destroy_compile (cfg);
4403 mono_error_set_exception_instance (error, ex);
4408 if (mono_method_is_generic_sharable (method, FALSE))
4409 shared = mini_get_shared_method (method);
4413 mono_domain_lock (target_domain);
4415 /* Check if some other thread already did the job. In this case, we can
4416 discard the code this thread generated. */
4418 info = mini_lookup_method (target_domain, method, shared);
4420 /* We can't use a domain specific method in another domain */
4421 if ((target_domain == mono_domain_get ()) || info->domain_neutral) {
4422 code = info->code_start;
4423 // printf("Discarding code for method %s\n", method->name);
4427 /* The lookup + insert is atomic since this is done inside the domain lock */
4428 mono_domain_jit_code_hash_lock (target_domain);
4429 mono_internal_hash_table_insert (&target_domain->jit_code_hash, cfg->jit_info->d.method, cfg->jit_info);
4430 mono_domain_jit_code_hash_unlock (target_domain);
4432 code = cfg->native_code;
4434 if (cfg->gshared && mono_method_is_generic_sharable (method, FALSE))
4435 mono_stats.generics_shared_methods++;
4437 mono_stats.gsharedvt_methods++;
4440 jinfo = cfg->jit_info;
4442 prof_options = cfg->prof_options;
4445 * Update global stats while holding a lock, instead of doing many
4446 * InterlockedIncrement operations during JITting.
4448 mono_update_jit_stats (cfg);
4450 mono_destroy_compile (cfg);
4453 if (domain_jit_info (target_domain)->jump_target_hash) {
4454 MonoJumpInfo patch_info;
4455 MonoJumpList *jlist;
4457 jlist = (MonoJumpList *)g_hash_table_lookup (domain_jit_info (target_domain)->jump_target_hash, method);
4459 patch_info.next = NULL;
4460 patch_info.ip.i = 0;
4461 patch_info.type = MONO_PATCH_INFO_METHOD_JUMP;
4462 patch_info.data.method = method;
4463 g_hash_table_remove (domain_jit_info (target_domain)->jump_target_hash, method);
4465 #if defined(__native_client_codegen__) && defined(__native_client__)
4466 /* These patches are applied after a method has been installed, no target munging is needed. */
4467 nacl_allow_target_modification (FALSE);
4469 #ifdef MONO_ARCH_HAVE_PATCH_CODE_NEW
4470 for (tmp = jlist->list; tmp; tmp = tmp->next) {
4471 gpointer target = mono_resolve_patch_target (NULL, target_domain, (guint8 *)tmp->data, &patch_info, TRUE, error);
4472 if (!mono_error_ok (error))
4474 mono_arch_patch_code_new (NULL, target_domain, (guint8 *)tmp->data, &patch_info, target);
4477 for (tmp = jlist->list; tmp; tmp = tmp->next)
4478 mono_arch_patch_code (NULL, NULL, target_domain, tmp->data, &patch_info, TRUE);
4480 #if defined(__native_client_codegen__) && defined(__native_client__)
4481 nacl_allow_target_modification (TRUE);
4486 /* Update llvm callees */
4487 if (domain_jit_info (target_domain)->llvm_jit_callees) {
4488 GSList *callees = g_hash_table_lookup (domain_jit_info (target_domain)->llvm_jit_callees, method);
4491 for (l = callees; l; l = l->next) {
4492 gpointer *addr = (gpointer*)l->data;
4498 mono_emit_jit_map (jinfo);
4500 mono_domain_unlock (target_domain);
4502 if (!mono_error_ok (error))
4505 vtable = mono_class_vtable (target_domain, method->klass);
4507 ex = mono_class_get_exception_for_failure (method->klass);
4509 mono_error_set_exception_instance (error, ex);
4513 if (prof_options & MONO_PROFILE_JIT_COMPILATION) {
4514 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
4515 if (mono_marshal_method_from_wrapper (method)) {
4516 /* Native func wrappers have no method */
4517 /* The profiler doesn't know about wrappers, so pass the original icall method */
4518 mono_profiler_method_end_jit (mono_marshal_method_from_wrapper (method), jinfo, MONO_PROFILE_OK);
4521 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
4522 if (prof_method != method) {
4523 mono_profiler_method_end_jit (prof_method, jinfo, MONO_PROFILE_OK);
4527 if (!mono_runtime_class_init_full (vtable, error))
4533 * mini_get_underlying_type:
4535 * Return the type the JIT will use during compilation.
4536 * Handles: byref, enums, native types, generic sharing.
4537 * For gsharedvt types, it will return the original VAR/MVAR.
4540 mini_get_underlying_type (MonoType *type)
4542 return mini_type_get_underlying_type (type);
4546 mini_jit_init (void)
4548 mono_os_mutex_init_recursive (&jit_mutex);
4550 current_backend = g_new0 (MonoBackend, 1);
4551 init_backend (current_backend);
4556 mini_jit_cleanup (void)
4559 g_free (emul_opcode_map);
4560 g_free (emul_opcode_opcodes);
4566 mono_llvm_emit_aot_file_info (MonoAotFileInfo *info, gboolean has_jitted_code)
4568 g_assert_not_reached ();
4571 void mono_llvm_emit_aot_data (const char *symbol, guint8 *data, int data_len)
4573 g_assert_not_reached ();
4578 #if !defined(ENABLE_LLVM_RUNTIME) && !defined(ENABLE_LLVM)
4581 mono_llvm_cpp_throw_exception (void)
4583 g_assert_not_reached ();
4591 mini_method_compile (MonoMethod *method, guint32 opts, MonoDomain *domain, JitFlags flags, int parts, int aot_method_index)
4593 g_assert_not_reached ();
4598 mono_destroy_compile (MonoCompile *cfg)
4600 g_assert_not_reached ();
4604 mono_add_patch_info (MonoCompile *cfg, int ip, MonoJumpInfoType type, gconstpointer target)
4606 g_assert_not_reached ();
4609 #endif /* DISABLE_JIT */