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)
21 #ifdef HAVE_SYS_TIME_H
25 #include <mono/utils/memcheck.h>
27 #include <mono/metadata/assembly.h>
28 #include <mono/metadata/loader.h>
29 #include <mono/metadata/tabledefs.h>
30 #include <mono/metadata/class.h>
31 #include <mono/metadata/object.h>
32 #include <mono/metadata/tokentype.h>
33 #include <mono/metadata/tabledefs.h>
34 #include <mono/metadata/threads.h>
35 #include <mono/metadata/appdomain.h>
36 #include <mono/metadata/debug-helpers.h>
37 #include "mono/metadata/profiler.h"
38 #include <mono/metadata/profiler-private.h>
39 #include <mono/metadata/mono-config.h>
40 #include <mono/metadata/environment.h>
41 #include <mono/metadata/mono-debug.h>
42 #include <mono/metadata/gc-internal.h>
43 #include <mono/metadata/threads-types.h>
44 #include <mono/metadata/verify.h>
45 #include <mono/metadata/verify-internals.h>
46 #include <mono/metadata/mempool-internals.h>
47 #include <mono/metadata/attach.h>
48 #include <mono/metadata/runtime.h>
49 #include <mono/utils/mono-math.h>
50 #include <mono/utils/mono-compiler.h>
51 #include <mono/utils/mono-counters.h>
52 #include <mono/utils/mono-error-internals.h>
53 #include <mono/utils/mono-logger-internal.h>
54 #include <mono/utils/mono-mmap.h>
55 #include <mono/utils/mono-path.h>
56 #include <mono/utils/mono-tls.h>
57 #include <mono/utils/mono-hwcap.h>
58 #include <mono/utils/dtrace.h>
59 #include <mono/utils/mono-threads.h>
60 #include <mono/io-layer/io-layer.h>
63 #include "seq-points.h"
71 #include "jit-icalls.h"
74 #include "debugger-agent.h"
76 MonoTraceSpec *mono_jit_trace_calls;
77 MonoMethodDesc *mono_inject_async_exc_method;
78 int mono_inject_async_exc_pos;
79 MonoMethodDesc *mono_break_at_bb_method;
80 int mono_break_at_bb_bb_num;
81 gboolean mono_do_x86_stack_align = TRUE;
82 gboolean mono_using_xdebug;
84 #define mono_jit_lock() mono_mutex_lock (&jit_mutex)
85 #define mono_jit_unlock() mono_mutex_unlock (&jit_mutex)
86 static mono_mutex_t jit_mutex;
91 mono_realloc_native_code (MonoCompile *cfg)
93 #if defined(__default_codegen__)
94 return g_realloc (cfg->native_code, cfg->code_size);
95 #elif defined(__native_client_codegen__)
98 guint alignment_check;
100 /* Save the old alignment offset so we can re-align after the realloc. */
101 old_padding = (guint)(cfg->native_code - cfg->native_code_alloc);
102 cfg->code_size = NACL_BUNDLE_ALIGN_UP (cfg->code_size);
104 cfg->native_code_alloc = g_realloc ( cfg->native_code_alloc,
105 cfg->code_size + kNaClAlignment );
107 /* Align native_code to next nearest kNaClAlignment byte. */
108 native_code = (guint)cfg->native_code_alloc + kNaClAlignment;
109 native_code = (guint)native_code & ~kNaClAlignmentMask;
111 /* Shift the data to be 32-byte aligned again. */
112 memmove (native_code, cfg->native_code_alloc + old_padding, cfg->code_size);
114 alignment_check = (guint)native_code & kNaClAlignmentMask;
115 g_assert (alignment_check == 0);
118 g_assert_not_reached ();
119 return cfg->native_code;
123 #ifdef __native_client_codegen__
125 /* Prevent instructions from straddling a 32-byte alignment boundary. */
126 /* Instructions longer than 32 bytes must be aligned internally. */
127 /* IN: pcode, instlen */
129 void mono_nacl_align_inst(guint8 **pcode, int instlen) {
132 space_in_block = kNaClAlignment - ((uintptr_t)(*pcode) & kNaClAlignmentMask);
134 if (G_UNLIKELY (instlen >= kNaClAlignment)) {
135 g_assert_not_reached();
136 } else if (instlen > space_in_block) {
137 *pcode = mono_arch_nacl_pad(*pcode, space_in_block);
141 /* Move emitted call sequence to the end of a kNaClAlignment-byte block. */
142 /* IN: start pointer to start of call sequence */
143 /* IN: pcode pointer to end of call sequence (current "IP") */
144 /* OUT: start pointer to the start of the call sequence after padding */
145 /* OUT: pcode pointer to the end of the call sequence after padding */
146 void mono_nacl_align_call(guint8 **start, guint8 **pcode) {
147 const size_t MAX_NACL_CALL_LENGTH = kNaClAlignment;
148 guint8 copy_of_call[MAX_NACL_CALL_LENGTH];
151 const size_t length = (size_t)((*pcode)-(*start));
152 g_assert(length < MAX_NACL_CALL_LENGTH);
154 memcpy(copy_of_call, *start, length);
155 temp = mono_nacl_pad_call(*start, (guint8)length);
156 memcpy(temp, copy_of_call, length);
158 (*pcode) = temp + length;
161 /* mono_nacl_pad_call(): Insert padding for Native Client call instructions */
162 /* code pointer to buffer for emitting code */
163 /* ilength length of call instruction */
164 guint8 *mono_nacl_pad_call(guint8 *code, guint8 ilength) {
165 int freeSpaceInBlock = kNaClAlignment - ((uintptr_t)code & kNaClAlignmentMask);
166 int padding = freeSpaceInBlock - ilength;
169 /* There isn't enough space in this block for the instruction. */
170 /* Fill this block and start a new one. */
171 code = mono_arch_nacl_pad(code, freeSpaceInBlock);
172 freeSpaceInBlock = kNaClAlignment;
173 padding = freeSpaceInBlock - ilength;
175 g_assert(ilength > 0);
176 g_assert(padding >= 0);
177 g_assert(padding < kNaClAlignment);
178 if (0 == padding) return code;
179 return mono_arch_nacl_pad(code, padding);
182 guint8 *mono_nacl_align(guint8 *code) {
183 int padding = kNaClAlignment - ((uintptr_t)code & kNaClAlignmentMask);
184 if (padding != kNaClAlignment) code = mono_arch_nacl_pad(code, padding);
188 void mono_nacl_fix_patches(const guint8 *code, MonoJumpInfo *ji)
190 #ifndef USE_JUMP_TABLES
191 MonoJumpInfo *patch_info;
192 for (patch_info = ji; patch_info; patch_info = patch_info->next) {
193 unsigned char *ip = patch_info->ip.i + code;
194 ip = mono_arch_nacl_skip_nops(ip);
195 patch_info->ip.i = ip - code;
199 #endif /* __native_client_codegen__ */
201 #ifdef USE_JUMP_TABLES
203 #define DEFAULT_JUMPTABLE_CHUNK_ELEMENTS 128
205 typedef struct MonoJumpTableChunk {
208 struct MonoJumpTableChunk *previous;
209 /* gpointer entries[total]; */
210 } MonoJumpTableChunk;
212 static MonoJumpTableChunk* g_jumptable;
213 #define mono_jumptable_lock() mono_mutex_lock (&jumptable_mutex)
214 #define mono_jumptable_unlock() mono_mutex_unlock (&jumptable_mutex)
215 static mono_mutex_t jumptable_mutex;
217 static MonoJumpTableChunk*
218 mono_create_jumptable_chunk (guint32 max_entries)
220 guint32 size = sizeof (MonoJumpTableChunk) + max_entries * sizeof(gpointer);
221 MonoJumpTableChunk *chunk = (MonoJumpTableChunk*) g_new0 (guchar, size);
222 chunk->total = max_entries;
227 mono_jumptable_init (void)
229 if (g_jumptable == NULL) {
230 mono_mutex_init_recursive (&jumptable_mutex);
231 g_jumptable = mono_create_jumptable_chunk (DEFAULT_JUMPTABLE_CHUNK_ELEMENTS);
236 mono_jumptable_add_entry (void)
238 return mono_jumptable_add_entries (1);
242 mono_jumptable_add_entries (guint32 entries)
247 mono_jumptable_init ();
248 mono_jumptable_lock ();
249 index = g_jumptable->active;
250 if (index + entries >= g_jumptable->total) {
252 * Grow jumptable, by adding one more chunk.
253 * We cannot realloc jumptable, as there could be pointers
254 * to existing jump table entries in the code, so instead
255 * we just add one more chunk.
257 guint32 max_entries = entries;
258 MonoJumpTableChunk *new_chunk;
260 if (max_entries < DEFAULT_JUMPTABLE_CHUNK_ELEMENTS)
261 max_entries = DEFAULT_JUMPTABLE_CHUNK_ELEMENTS;
262 new_chunk = mono_create_jumptable_chunk (max_entries);
263 /* Link old jumptable, so that we could free it up later. */
264 new_chunk->previous = g_jumptable;
265 g_jumptable = new_chunk;
268 g_jumptable->active = index + entries;
269 result = (gpointer*)((guchar*)g_jumptable + sizeof(MonoJumpTableChunk)) + index;
270 mono_jumptable_unlock();
276 mono_jumptable_cleanup (void)
279 MonoJumpTableChunk *current = g_jumptable, *prev;
280 while (current != NULL) {
281 prev = current->previous;
286 mono_mutex_destroy (&jumptable_mutex);
291 mono_jumptable_get_entry (guint8 *code_ptr)
293 return mono_arch_jumptable_entry_from_code (code_ptr);
296 #endif /* USE_JUMP_TABLES */
299 MonoExceptionClause *clause;
300 MonoBasicBlock *basic_block;
305 * mono_emit_unwind_op:
307 * Add an unwind op with the given parameters for the list of unwind ops stored in
311 mono_emit_unwind_op (MonoCompile *cfg, int when, int tag, int reg, int val)
313 MonoUnwindOp *op = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoUnwindOp));
320 cfg->unwind_ops = g_slist_append_mempool (cfg->mempool, cfg->unwind_ops, op);
321 if (cfg->verbose_level > 1) {
324 printf ("CFA: [%x] def_cfa: %s+0x%x\n", when, mono_arch_regname (reg), val);
326 case DW_CFA_def_cfa_register:
327 printf ("CFA: [%x] def_cfa_reg: %s\n", when, mono_arch_regname (reg));
329 case DW_CFA_def_cfa_offset:
330 printf ("CFA: [%x] def_cfa_offset: 0x%x\n", when, val);
333 printf ("CFA: [%x] offset: %s at cfa-0x%x\n", when, mono_arch_regname (reg), -val);
339 #define MONO_INIT_VARINFO(vi,id) do { \
340 (vi)->range.first_use.pos.bid = 0xffff; \
346 * mono_unlink_bblock:
348 * Unlink two basic blocks.
351 mono_unlink_bblock (MonoCompile *cfg, MonoBasicBlock *from, MonoBasicBlock* to)
357 for (i = 0; i < from->out_count; ++i) {
358 if (to == from->out_bb [i]) {
365 for (i = 0; i < from->out_count; ++i) {
366 if (from->out_bb [i] != to)
367 from->out_bb [pos ++] = from->out_bb [i];
369 g_assert (pos == from->out_count - 1);
374 for (i = 0; i < to->in_count; ++i) {
375 if (from == to->in_bb [i]) {
382 for (i = 0; i < to->in_count; ++i) {
383 if (to->in_bb [i] != from)
384 to->in_bb [pos ++] = to->in_bb [i];
386 g_assert (pos == to->in_count - 1);
392 * mono_bblocks_linked:
394 * Return whenever BB1 and BB2 are linked in the CFG.
397 mono_bblocks_linked (MonoBasicBlock *bb1, MonoBasicBlock *bb2)
401 for (i = 0; i < bb1->out_count; ++i) {
402 if (bb1->out_bb [i] == bb2)
410 mono_find_block_region_notry (MonoCompile *cfg, int offset)
412 MonoMethodHeader *header = cfg->header;
413 MonoExceptionClause *clause;
416 for (i = 0; i < header->num_clauses; ++i) {
417 clause = &header->clauses [i];
418 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
419 (offset < (clause->handler_offset)))
420 return ((i + 1) << 8) | MONO_REGION_FILTER | clause->flags;
422 if (MONO_OFFSET_IN_HANDLER (clause, offset)) {
423 if (clause->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
424 return ((i + 1) << 8) | MONO_REGION_FINALLY | clause->flags;
425 else if (clause->flags == MONO_EXCEPTION_CLAUSE_FAULT)
426 return ((i + 1) << 8) | MONO_REGION_FAULT | clause->flags;
428 return ((i + 1) << 8) | MONO_REGION_CATCH | clause->flags;
436 * mono_get_block_region_notry:
438 * Return the region corresponding to REGION, ignoring try clauses nested inside
442 mono_get_block_region_notry (MonoCompile *cfg, int region)
444 if ((region & (0xf << 4)) == MONO_REGION_TRY) {
445 MonoMethodHeader *header = cfg->header;
448 * This can happen if a try clause is nested inside a finally clause.
450 int clause_index = (region >> 8) - 1;
451 g_assert (clause_index >= 0 && clause_index < header->num_clauses);
453 region = mono_find_block_region_notry (cfg, header->clauses [clause_index].try_offset);
460 mono_find_spvar_for_region (MonoCompile *cfg, int region)
462 region = mono_get_block_region_notry (cfg, region);
464 return g_hash_table_lookup (cfg->spvars, GINT_TO_POINTER (region));
468 df_visit (MonoBasicBlock *start, int *dfn, MonoBasicBlock **array)
472 array [*dfn] = start;
473 /* g_print ("visit %d at %p (BB%ld)\n", *dfn, start->cil_code, start->block_num); */
474 for (i = 0; i < start->out_count; ++i) {
475 if (start->out_bb [i]->dfn)
478 start->out_bb [i]->dfn = *dfn;
479 start->out_bb [i]->df_parent = start;
480 array [*dfn] = start->out_bb [i];
481 df_visit (start->out_bb [i], dfn, array);
486 mono_reverse_branch_op (guint32 opcode)
488 static const int reverse_map [] = {
489 CEE_BNE_UN, CEE_BLT, CEE_BLE, CEE_BGT, CEE_BGE,
490 CEE_BEQ, CEE_BLT_UN, CEE_BLE_UN, CEE_BGT_UN, CEE_BGE_UN
492 static const int reverse_fmap [] = {
493 OP_FBNE_UN, OP_FBLT, OP_FBLE, OP_FBGT, OP_FBGE,
494 OP_FBEQ, OP_FBLT_UN, OP_FBLE_UN, OP_FBGT_UN, OP_FBGE_UN
496 static const int reverse_lmap [] = {
497 OP_LBNE_UN, OP_LBLT, OP_LBLE, OP_LBGT, OP_LBGE,
498 OP_LBEQ, OP_LBLT_UN, OP_LBLE_UN, OP_LBGT_UN, OP_LBGE_UN
500 static const int reverse_imap [] = {
501 OP_IBNE_UN, OP_IBLT, OP_IBLE, OP_IBGT, OP_IBGE,
502 OP_IBEQ, OP_IBLT_UN, OP_IBLE_UN, OP_IBGT_UN, OP_IBGE_UN
505 if (opcode >= CEE_BEQ && opcode <= CEE_BLT_UN) {
506 opcode = reverse_map [opcode - CEE_BEQ];
507 } else if (opcode >= OP_FBEQ && opcode <= OP_FBLT_UN) {
508 opcode = reverse_fmap [opcode - OP_FBEQ];
509 } else if (opcode >= OP_LBEQ && opcode <= OP_LBLT_UN) {
510 opcode = reverse_lmap [opcode - OP_LBEQ];
511 } else if (opcode >= OP_IBEQ && opcode <= OP_IBLT_UN) {
512 opcode = reverse_imap [opcode - OP_IBEQ];
514 g_assert_not_reached ();
520 mono_type_to_store_membase (MonoCompile *cfg, MonoType *type)
522 type = mini_get_underlying_type (type);
525 switch (type->type) {
528 return OP_STOREI1_MEMBASE_REG;
531 return OP_STOREI2_MEMBASE_REG;
534 return OP_STOREI4_MEMBASE_REG;
538 case MONO_TYPE_FNPTR:
539 return OP_STORE_MEMBASE_REG;
540 case MONO_TYPE_CLASS:
541 case MONO_TYPE_STRING:
542 case MONO_TYPE_OBJECT:
543 case MONO_TYPE_SZARRAY:
544 case MONO_TYPE_ARRAY:
545 return OP_STORE_MEMBASE_REG;
548 return OP_STOREI8_MEMBASE_REG;
550 return OP_STORER4_MEMBASE_REG;
552 return OP_STORER8_MEMBASE_REG;
553 case MONO_TYPE_VALUETYPE:
554 if (type->data.klass->enumtype) {
555 type = mono_class_enum_basetype (type->data.klass);
558 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
559 return OP_STOREX_MEMBASE;
560 return OP_STOREV_MEMBASE;
561 case MONO_TYPE_TYPEDBYREF:
562 return OP_STOREV_MEMBASE;
563 case MONO_TYPE_GENERICINST:
564 type = &type->data.generic_class->container_class->byval_arg;
568 g_assert (mini_type_var_is_vt (type));
569 return OP_STOREV_MEMBASE;
571 g_error ("unknown type 0x%02x in type_to_store_membase", type->type);
577 mono_type_to_load_membase (MonoCompile *cfg, MonoType *type)
579 type = mini_get_underlying_type (type);
581 switch (type->type) {
583 return OP_LOADI1_MEMBASE;
585 return OP_LOADU1_MEMBASE;
587 return OP_LOADI2_MEMBASE;
589 return OP_LOADU2_MEMBASE;
591 return OP_LOADI4_MEMBASE;
593 return OP_LOADU4_MEMBASE;
597 case MONO_TYPE_FNPTR:
598 return OP_LOAD_MEMBASE;
599 case MONO_TYPE_CLASS:
600 case MONO_TYPE_STRING:
601 case MONO_TYPE_OBJECT:
602 case MONO_TYPE_SZARRAY:
603 case MONO_TYPE_ARRAY:
604 return OP_LOAD_MEMBASE;
607 return OP_LOADI8_MEMBASE;
609 return OP_LOADR4_MEMBASE;
611 return OP_LOADR8_MEMBASE;
612 case MONO_TYPE_VALUETYPE:
613 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (type)))
614 return OP_LOADX_MEMBASE;
615 case MONO_TYPE_TYPEDBYREF:
616 return OP_LOADV_MEMBASE;
617 case MONO_TYPE_GENERICINST:
618 if (mono_type_generic_inst_is_valuetype (type))
619 return OP_LOADV_MEMBASE;
621 return OP_LOAD_MEMBASE;
625 g_assert (cfg->gshared);
626 g_assert (mini_type_var_is_vt (type));
627 return OP_LOADV_MEMBASE;
629 g_error ("unknown type 0x%02x in type_to_load_membase", type->type);
635 mini_type_to_stind (MonoCompile* cfg, MonoType *type)
637 type = mini_get_underlying_type (type);
638 if (cfg->gshared && !type->byref && (type->type == MONO_TYPE_VAR || type->type == MONO_TYPE_MVAR)) {
639 g_assert (mini_type_var_is_vt (type));
642 return mono_type_to_stind (type);
646 mono_op_imm_to_op (int opcode)
650 #if SIZEOF_REGISTER == 4
666 #if SIZEOF_REGISTER == 4
672 #if SIZEOF_REGISTER == 4
678 #if SIZEOF_REGISTER == 4
718 #if SIZEOF_REGISTER == 4
724 #if SIZEOF_REGISTER == 4
743 case OP_ICOMPARE_IMM:
745 case OP_LOCALLOC_IMM:
748 printf ("%s\n", mono_inst_name (opcode));
749 g_assert_not_reached ();
755 * mono_decompose_op_imm:
757 * Replace the OP_.._IMM INS with its non IMM variant.
760 mono_decompose_op_imm (MonoCompile *cfg, MonoBasicBlock *bb, MonoInst *ins)
764 MONO_INST_NEW (cfg, temp, OP_ICONST);
765 temp->inst_c0 = ins->inst_imm;
766 temp->dreg = mono_alloc_ireg (cfg);
767 mono_bblock_insert_before_ins (bb, ins, temp);
768 ins->opcode = mono_op_imm_to_op (ins->opcode);
769 if (ins->opcode == OP_LOCALLOC)
770 ins->sreg1 = temp->dreg;
772 ins->sreg2 = temp->dreg;
774 bb->max_vreg = MAX (bb->max_vreg, cfg->next_vreg);
778 set_vreg_to_inst (MonoCompile *cfg, int vreg, MonoInst *inst)
780 if (vreg >= cfg->vreg_to_inst_len) {
781 MonoInst **tmp = cfg->vreg_to_inst;
782 int size = cfg->vreg_to_inst_len;
784 while (vreg >= cfg->vreg_to_inst_len)
785 cfg->vreg_to_inst_len = cfg->vreg_to_inst_len ? cfg->vreg_to_inst_len * 2 : 32;
786 cfg->vreg_to_inst = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * cfg->vreg_to_inst_len);
788 memcpy (cfg->vreg_to_inst, tmp, size * sizeof (MonoInst*));
790 cfg->vreg_to_inst [vreg] = inst;
793 #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)))
794 #define mono_type_is_float(type) (!(type)->byref && (((type)->type == MONO_TYPE_R8) || ((type)->type == MONO_TYPE_R4)))
797 mono_compile_create_var_for_vreg (MonoCompile *cfg, MonoType *type, int opcode, int vreg)
800 int num = cfg->num_varinfo;
803 type = mini_get_underlying_type (type);
805 if ((num + 1) >= cfg->varinfo_count) {
806 int orig_count = cfg->varinfo_count;
807 cfg->varinfo_count = cfg->varinfo_count ? (cfg->varinfo_count * 2) : 32;
808 cfg->varinfo = (MonoInst **)g_realloc (cfg->varinfo, sizeof (MonoInst*) * cfg->varinfo_count);
809 cfg->vars = (MonoMethodVar *)g_realloc (cfg->vars, sizeof (MonoMethodVar) * cfg->varinfo_count);
810 memset (&cfg->vars [orig_count], 0, (cfg->varinfo_count - orig_count) * sizeof (MonoMethodVar));
813 cfg->stat_allocate_var++;
815 MONO_INST_NEW (cfg, inst, opcode);
817 inst->inst_vtype = type;
818 inst->klass = mono_class_from_mono_type (type);
819 type_to_eval_stack_type (cfg, type, inst);
820 /* if set to 1 the variable is native */
821 inst->backend.is_pinvoke = 0;
824 if (inst->klass->exception_type)
825 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
827 if (cfg->compute_gc_maps) {
829 mono_mark_vreg_as_mp (cfg, vreg);
831 if ((MONO_TYPE_ISSTRUCT (type) && inst->klass->has_references) || mini_type_is_reference (type)) {
832 inst->flags |= MONO_INST_GC_TRACK;
833 mono_mark_vreg_as_ref (cfg, vreg);
838 cfg->varinfo [num] = inst;
840 MONO_INIT_VARINFO (&cfg->vars [num], num);
841 MONO_VARINFO (cfg, num)->vreg = vreg;
844 set_vreg_to_inst (cfg, vreg, inst);
846 #if SIZEOF_REGISTER == 4
847 if (mono_arch_is_soft_float ()) {
848 regpair = mono_type_is_long (type) || mono_type_is_float (type);
850 regpair = mono_type_is_long (type);
860 * These two cannot be allocated using create_var_for_vreg since that would
861 * put it into the cfg->varinfo array, confusing many parts of the JIT.
865 * Set flags to VOLATILE so SSA skips it.
868 if (cfg->verbose_level >= 4) {
869 printf (" Create LVAR R%d (R%d, R%d)\n", inst->dreg, inst->dreg + 1, inst->dreg + 2);
872 if (mono_arch_is_soft_float () && cfg->opt & MONO_OPT_SSA) {
873 if (mono_type_is_float (type))
874 inst->flags = MONO_INST_VOLATILE;
877 /* Allocate a dummy MonoInst for the first vreg */
878 MONO_INST_NEW (cfg, tree, OP_LOCAL);
879 tree->dreg = inst->dreg + 1;
880 if (cfg->opt & MONO_OPT_SSA)
881 tree->flags = MONO_INST_VOLATILE;
883 tree->type = STACK_I4;
884 tree->inst_vtype = &mono_defaults.int32_class->byval_arg;
885 tree->klass = mono_class_from_mono_type (tree->inst_vtype);
887 set_vreg_to_inst (cfg, inst->dreg + 1, tree);
889 /* Allocate a dummy MonoInst for the second vreg */
890 MONO_INST_NEW (cfg, tree, OP_LOCAL);
891 tree->dreg = inst->dreg + 2;
892 if (cfg->opt & MONO_OPT_SSA)
893 tree->flags = MONO_INST_VOLATILE;
895 tree->type = STACK_I4;
896 tree->inst_vtype = &mono_defaults.int32_class->byval_arg;
897 tree->klass = mono_class_from_mono_type (tree->inst_vtype);
899 set_vreg_to_inst (cfg, inst->dreg + 2, tree);
903 if (cfg->verbose_level > 2)
904 g_print ("created temp %d (R%d) of type %s\n", num, vreg, mono_type_get_name (type));
909 mono_compile_create_var (MonoCompile *cfg, MonoType *type, int opcode)
912 type = mini_get_underlying_type (type);
914 if (mono_type_is_long (type))
915 dreg = mono_alloc_dreg (cfg, STACK_I8);
916 else if (mono_arch_is_soft_float () && mono_type_is_float (type))
917 dreg = mono_alloc_dreg (cfg, STACK_R8);
919 /* All the others are unified */
920 dreg = mono_alloc_preg (cfg);
922 return mono_compile_create_var_for_vreg (cfg, type, opcode, dreg);
926 mini_get_int_to_float_spill_area (MonoCompile *cfg)
929 if (!cfg->iconv_raw_var) {
930 cfg->iconv_raw_var = mono_compile_create_var (cfg, &mono_defaults.int32_class->byval_arg, OP_LOCAL);
931 cfg->iconv_raw_var->flags |= MONO_INST_VOLATILE; /*FIXME, use the don't regalloc flag*/
933 return cfg->iconv_raw_var;
940 mono_mark_vreg_as_ref (MonoCompile *cfg, int vreg)
942 if (vreg >= cfg->vreg_is_ref_len) {
943 gboolean *tmp = cfg->vreg_is_ref;
944 int size = cfg->vreg_is_ref_len;
946 while (vreg >= cfg->vreg_is_ref_len)
947 cfg->vreg_is_ref_len = cfg->vreg_is_ref_len ? cfg->vreg_is_ref_len * 2 : 32;
948 cfg->vreg_is_ref = mono_mempool_alloc0 (cfg->mempool, sizeof (gboolean) * cfg->vreg_is_ref_len);
950 memcpy (cfg->vreg_is_ref, tmp, size * sizeof (gboolean));
952 cfg->vreg_is_ref [vreg] = TRUE;
956 mono_mark_vreg_as_mp (MonoCompile *cfg, int vreg)
958 if (vreg >= cfg->vreg_is_mp_len) {
959 gboolean *tmp = cfg->vreg_is_mp;
960 int size = cfg->vreg_is_mp_len;
962 while (vreg >= cfg->vreg_is_mp_len)
963 cfg->vreg_is_mp_len = cfg->vreg_is_mp_len ? cfg->vreg_is_mp_len * 2 : 32;
964 cfg->vreg_is_mp = mono_mempool_alloc0 (cfg->mempool, sizeof (gboolean) * cfg->vreg_is_mp_len);
966 memcpy (cfg->vreg_is_mp, tmp, size * sizeof (gboolean));
968 cfg->vreg_is_mp [vreg] = TRUE;
972 type_from_stack_type (MonoInst *ins)
975 case STACK_I4: return &mono_defaults.int32_class->byval_arg;
976 case STACK_I8: return &mono_defaults.int64_class->byval_arg;
977 case STACK_PTR: return &mono_defaults.int_class->byval_arg;
978 case STACK_R8: return &mono_defaults.double_class->byval_arg;
981 * this if used to be commented without any specific reason, but
982 * it breaks #80235 when commented
985 return &ins->klass->this_arg;
987 return &mono_defaults.object_class->this_arg;
989 /* ins->klass may not be set for ldnull.
990 * Also, if we have a boxed valuetype, we want an object lass,
991 * not the valuetype class
993 if (ins->klass && !ins->klass->valuetype)
994 return &ins->klass->byval_arg;
995 return &mono_defaults.object_class->byval_arg;
996 case STACK_VTYPE: return &ins->klass->byval_arg;
998 g_error ("stack type %d to montype not handled\n", ins->type);
1004 mono_type_from_stack_type (MonoInst *ins)
1006 return type_from_stack_type (ins);
1010 * mono_add_ins_to_end:
1012 * Same as MONO_ADD_INS, but add INST before any branches at the end of BB.
1015 mono_add_ins_to_end (MonoBasicBlock *bb, MonoInst *inst)
1020 MONO_ADD_INS (bb, inst);
1024 switch (bb->last_ins->opcode) {
1038 mono_bblock_insert_before_ins (bb, bb->last_ins, inst);
1041 if (MONO_IS_COND_BRANCH_OP (bb->last_ins)) {
1042 /* Need to insert the ins before the compare */
1043 if (bb->code == bb->last_ins) {
1044 mono_bblock_insert_before_ins (bb, bb->last_ins, inst);
1048 if (bb->code->next == bb->last_ins) {
1049 /* Only two instructions */
1050 opcode = bb->code->opcode;
1052 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)) {
1054 mono_bblock_insert_before_ins (bb, bb->code, inst);
1056 mono_bblock_insert_before_ins (bb, bb->last_ins, inst);
1059 opcode = bb->last_ins->prev->opcode;
1061 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)) {
1063 mono_bblock_insert_before_ins (bb, bb->last_ins->prev, inst);
1065 mono_bblock_insert_before_ins (bb, bb->last_ins, inst);
1070 MONO_ADD_INS (bb, inst);
1076 mono_create_jump_table (MonoCompile *cfg, MonoInst *label, MonoBasicBlock **bbs, int num_blocks)
1078 MonoJumpInfo *ji = mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfo));
1079 MonoJumpInfoBBTable *table;
1081 table = mono_mempool_alloc (cfg->mempool, sizeof (MonoJumpInfoBBTable));
1083 table->table_size = num_blocks;
1085 ji->ip.label = label;
1086 ji->type = MONO_PATCH_INFO_SWITCH;
1087 ji->data.table = table;
1088 ji->next = cfg->patch_info;
1089 cfg->patch_info = ji;
1092 static MonoMethodSignature *
1093 mono_get_array_new_va_signature (int arity)
1095 static GHashTable *sighash;
1096 MonoMethodSignature *res;
1101 sighash = g_hash_table_new (NULL, NULL);
1103 else if ((res = g_hash_table_lookup (sighash, GINT_TO_POINTER (arity)))) {
1108 res = mono_metadata_signature_alloc (mono_defaults.corlib, arity + 1);
1111 if (ARCH_VARARG_ICALLS)
1112 /* Only set this only some archs since not all backends can handle varargs+pinvoke */
1113 res->call_convention = MONO_CALL_VARARG;
1116 res->call_convention = MONO_CALL_C;
1119 res->params [0] = &mono_defaults.int_class->byval_arg;
1120 for (i = 0; i < arity; i++)
1121 res->params [i + 1] = &mono_defaults.int_class->byval_arg;
1123 res->ret = &mono_defaults.object_class->byval_arg;
1125 g_hash_table_insert (sighash, GINT_TO_POINTER (arity), res);
1132 mono_get_array_new_va_icall (int rank)
1134 MonoMethodSignature *esig;
1135 char icall_name [256];
1137 MonoJitICallInfo *info;
1139 /* Need to register the icall so it gets an icall wrapper */
1140 sprintf (icall_name, "ves_array_new_va_%d", rank);
1143 info = mono_find_jit_icall_by_name (icall_name);
1145 esig = mono_get_array_new_va_signature (rank);
1146 name = g_strdup (icall_name);
1147 info = mono_register_jit_icall (mono_array_new_va, name, esig, FALSE);
1155 mini_class_is_system_array (MonoClass *klass)
1157 if (klass->parent == mono_defaults.array_class)
1164 mini_assembly_can_skip_verification (MonoDomain *domain, MonoMethod *method)
1166 MonoAssembly *assembly = method->klass->image->assembly;
1167 if (method->wrapper_type != MONO_WRAPPER_NONE && method->wrapper_type != MONO_WRAPPER_DYNAMIC_METHOD)
1169 if (assembly->in_gac || assembly->image == mono_defaults.corlib)
1171 return mono_assembly_has_skip_verification (assembly);
1175 * mini_method_verify:
1177 * Verify the method using the new verfier.
1179 * Returns true if the method is invalid.
1182 mini_method_verify (MonoCompile *cfg, MonoMethod *method, gboolean fail_compile)
1185 gboolean is_fulltrust;
1186 MonoLoaderError *error;
1188 if (method->verification_success)
1191 if (!mono_verifier_is_enabled_for_method (method))
1194 /*skip verification implies the assembly must be */
1195 is_fulltrust = mono_verifier_is_method_full_trust (method) || mini_assembly_can_skip_verification (cfg->domain, method);
1197 res = mono_method_verify_with_current_settings (method, cfg->skip_visibility, is_fulltrust);
1199 if ((error = mono_loader_get_last_error ())) {
1201 cfg->exception_type = error->exception_type;
1203 mono_loader_clear_error ();
1205 mono_free_verify_list (res);
1210 for (tmp = res; tmp; tmp = tmp->next) {
1211 MonoVerifyInfoExtended *info = (MonoVerifyInfoExtended *)tmp->data;
1212 if (info->info.status == MONO_VERIFY_ERROR) {
1214 char *method_name = mono_method_full_name (method, TRUE);
1215 cfg->exception_type = info->exception_type;
1216 cfg->exception_message = g_strdup_printf ("Error verifying %s: %s", method_name, info->info.message);
1217 g_free (method_name);
1219 mono_free_verify_list (res);
1222 if (info->info.status == MONO_VERIFY_NOT_VERIFIABLE && (!is_fulltrust || info->exception_type == MONO_EXCEPTION_METHOD_ACCESS || info->exception_type == MONO_EXCEPTION_FIELD_ACCESS)) {
1224 char *method_name = mono_method_full_name (method, TRUE);
1225 cfg->exception_type = info->exception_type;
1226 cfg->exception_message = g_strdup_printf ("Error verifying %s: %s", method_name, info->info.message);
1227 g_free (method_name);
1229 mono_free_verify_list (res);
1233 mono_free_verify_list (res);
1235 method->verification_success = 1;
1239 /*Returns true if something went wrong*/
1241 mono_compile_is_broken (MonoCompile *cfg, MonoMethod *method, gboolean fail_compile)
1243 MonoMethod *method_definition = method;
1244 gboolean dont_verify = method->klass->image->assembly->corlib_internal;
1246 while (method_definition->is_inflated) {
1247 MonoMethodInflated *imethod = (MonoMethodInflated *) method_definition;
1248 method_definition = imethod->declaring;
1251 return !dont_verify && mini_method_verify (cfg, method_definition, fail_compile);
1255 mono_dynamic_code_hash_insert (MonoDomain *domain, MonoMethod *method, MonoJitDynamicMethodInfo *ji)
1257 if (!domain_jit_info (domain)->dynamic_code_hash)
1258 domain_jit_info (domain)->dynamic_code_hash = g_hash_table_new (NULL, NULL);
1259 g_hash_table_insert (domain_jit_info (domain)->dynamic_code_hash, method, ji);
1262 static MonoJitDynamicMethodInfo*
1263 mono_dynamic_code_hash_lookup (MonoDomain *domain, MonoMethod *method)
1265 MonoJitDynamicMethodInfo *res;
1267 if (domain_jit_info (domain)->dynamic_code_hash)
1268 res = g_hash_table_lookup (domain_jit_info (domain)->dynamic_code_hash, method);
1276 GList *active, *inactive;
1281 compare_by_interval_start_pos_func (gconstpointer a, gconstpointer b)
1283 MonoMethodVar *v1 = (MonoMethodVar*)a;
1284 MonoMethodVar *v2 = (MonoMethodVar*)b;
1288 else if (v1->interval->range && v2->interval->range)
1289 return v1->interval->range->from - v2->interval->range->from;
1290 else if (v1->interval->range)
1297 #define LSCAN_DEBUG(a) do { a; } while (0)
1299 #define LSCAN_DEBUG(a)
1303 mono_allocate_stack_slots2 (MonoCompile *cfg, gboolean backward, guint32 *stack_size, guint32 *stack_align)
1305 int i, slot, offset, size;
1310 GList *vars = NULL, *l, *unhandled;
1311 StackSlotInfo *scalar_stack_slots, *vtype_stack_slots, *slot_info;
1314 gboolean reuse_slot;
1316 LSCAN_DEBUG (printf ("Allocate Stack Slots 2 for %s:\n", mono_method_full_name (cfg->method, TRUE)));
1318 scalar_stack_slots = mono_mempool_alloc0 (cfg->mempool, sizeof (StackSlotInfo) * MONO_TYPE_PINNED);
1319 vtype_stack_slots = NULL;
1322 offsets = mono_mempool_alloc (cfg->mempool, sizeof (gint32) * cfg->num_varinfo);
1323 for (i = 0; i < cfg->num_varinfo; ++i)
1326 for (i = cfg->locals_start; i < cfg->num_varinfo; i++) {
1327 inst = cfg->varinfo [i];
1328 vmv = MONO_VARINFO (cfg, i);
1330 if ((inst->flags & MONO_INST_IS_DEAD) || inst->opcode == OP_REGVAR || inst->opcode == OP_REGOFFSET)
1333 vars = g_list_prepend (vars, vmv);
1336 vars = g_list_sort (g_list_copy (vars), compare_by_interval_start_pos_func);
1341 for (unhandled = vars; unhandled; unhandled = unhandled->next) {
1342 MonoMethodVar *current = unhandled->data;
1344 if (current->interval->range) {
1345 g_assert (current->interval->range->from >= i);
1346 i = current->interval->range->from;
1353 for (unhandled = vars; unhandled; unhandled = unhandled->next) {
1354 MonoMethodVar *current = unhandled->data;
1357 inst = cfg->varinfo [vmv->idx];
1359 t = mono_type_get_underlying_type (inst->inst_vtype);
1360 if (cfg->gsharedvt && mini_is_gsharedvt_variable_type (t))
1363 /* inst->backend.is_pinvoke indicates native sized value types, this is used by the
1364 * pinvoke wrappers when they call functions returning structures */
1365 if (inst->backend.is_pinvoke && MONO_TYPE_ISSTRUCT (t) && t->type != MONO_TYPE_TYPEDBYREF) {
1366 size = mono_class_native_size (mono_class_from_mono_type (t), &align);
1371 size = mini_type_stack_size (t, &ialign);
1374 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (t)))
1379 if (cfg->disable_reuse_stack_slots)
1382 t = mini_get_underlying_type (t);
1384 case MONO_TYPE_GENERICINST:
1385 if (!mono_type_generic_inst_is_valuetype (t)) {
1386 slot_info = &scalar_stack_slots [t->type];
1390 case MONO_TYPE_VALUETYPE:
1391 if (!vtype_stack_slots)
1392 vtype_stack_slots = mono_mempool_alloc0 (cfg->mempool, sizeof (StackSlotInfo) * 256);
1393 for (i = 0; i < nvtypes; ++i)
1394 if (t->data.klass == vtype_stack_slots [i].vtype)
1397 slot_info = &vtype_stack_slots [i];
1399 g_assert (nvtypes < 256);
1400 vtype_stack_slots [nvtypes].vtype = t->data.klass;
1401 slot_info = &vtype_stack_slots [nvtypes];
1404 if (cfg->disable_reuse_ref_stack_slots)
1411 #if SIZEOF_VOID_P == 4
1416 if (cfg->disable_ref_noref_stack_slot_share) {
1417 slot_info = &scalar_stack_slots [MONO_TYPE_I];
1422 case MONO_TYPE_CLASS:
1423 case MONO_TYPE_OBJECT:
1424 case MONO_TYPE_ARRAY:
1425 case MONO_TYPE_SZARRAY:
1426 case MONO_TYPE_STRING:
1427 /* Share non-float stack slots of the same size */
1428 slot_info = &scalar_stack_slots [MONO_TYPE_CLASS];
1429 if (cfg->disable_reuse_ref_stack_slots)
1434 slot_info = &scalar_stack_slots [t->type];
1438 if (cfg->comp_done & MONO_COMP_LIVENESS) {
1442 //printf ("START %2d %08x %08x\n", vmv->idx, vmv->range.first_use.abs_pos, vmv->range.last_use.abs_pos);
1444 if (!current->interval->range) {
1445 if (inst->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT))
1449 inst->flags |= MONO_INST_IS_DEAD;
1454 pos = current->interval->range->from;
1456 LSCAN_DEBUG (printf ("process R%d ", inst->dreg));
1457 if (current->interval->range)
1458 LSCAN_DEBUG (mono_linterval_print (current->interval));
1459 LSCAN_DEBUG (printf ("\n"));
1461 /* Check for intervals in active which expired or inactive */
1463 /* FIXME: Optimize this */
1466 for (l = slot_info->active; l != NULL; l = l->next) {
1467 MonoMethodVar *v = (MonoMethodVar*)l->data;
1469 if (v->interval->last_range->to < pos) {
1470 slot_info->active = g_list_delete_link (slot_info->active, l);
1471 slot_info->slots = g_slist_prepend_mempool (cfg->mempool, slot_info->slots, GINT_TO_POINTER (offsets [v->idx]));
1472 LSCAN_DEBUG (printf ("Interval R%d has expired, adding 0x%x to slots\n", cfg->varinfo [v->idx]->dreg, offsets [v->idx]));
1476 else if (!mono_linterval_covers (v->interval, pos)) {
1477 slot_info->inactive = g_list_append (slot_info->inactive, v);
1478 slot_info->active = g_list_delete_link (slot_info->active, l);
1479 LSCAN_DEBUG (printf ("Interval R%d became inactive\n", cfg->varinfo [v->idx]->dreg));
1486 /* Check for intervals in inactive which expired or active */
1488 /* FIXME: Optimize this */
1491 for (l = slot_info->inactive; l != NULL; l = l->next) {
1492 MonoMethodVar *v = (MonoMethodVar*)l->data;
1494 if (v->interval->last_range->to < pos) {
1495 slot_info->inactive = g_list_delete_link (slot_info->inactive, l);
1496 // FIXME: Enabling this seems to cause impossible to debug crashes
1497 //slot_info->slots = g_slist_prepend_mempool (cfg->mempool, slot_info->slots, GINT_TO_POINTER (offsets [v->idx]));
1498 LSCAN_DEBUG (printf ("Interval R%d has expired, adding 0x%x to slots\n", cfg->varinfo [v->idx]->dreg, offsets [v->idx]));
1502 else if (mono_linterval_covers (v->interval, pos)) {
1503 slot_info->active = g_list_append (slot_info->active, v);
1504 slot_info->inactive = g_list_delete_link (slot_info->inactive, l);
1505 LSCAN_DEBUG (printf ("\tInterval R%d became active\n", cfg->varinfo [v->idx]->dreg));
1513 * This also handles the case when the variable is used in an
1514 * exception region, as liveness info is not computed there.
1517 * FIXME: All valuetypes are marked as INDIRECT because of LDADDR
1520 if (! (inst->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT))) {
1521 if (slot_info->slots) {
1522 slot = GPOINTER_TO_INT (slot_info->slots->data);
1524 slot_info->slots = slot_info->slots->next;
1527 /* FIXME: We might want to consider the inactive intervals as well if slot_info->slots is empty */
1529 slot_info->active = mono_varlist_insert_sorted (cfg, slot_info->active, vmv, TRUE);
1535 static int count = 0;
1538 if (count == atoi (g_getenv ("COUNT3")))
1539 printf ("LAST: %s\n", mono_method_full_name (cfg->method, TRUE));
1540 if (count > atoi (g_getenv ("COUNT3")))
1543 mono_print_ins (inst);
1548 LSCAN_DEBUG (printf ("R%d %s -> 0x%x\n", inst->dreg, mono_type_full_name (t), slot));
1550 if (inst->flags & MONO_INST_LMF) {
1551 size = sizeof (MonoLMF);
1552 align = sizeof (mgreg_t);
1559 if (slot == 0xffffff) {
1561 * Allways allocate valuetypes to sizeof (gpointer) to allow more
1562 * efficient copying (and to work around the fact that OP_MEMCPY
1563 * and OP_MEMSET ignores alignment).
1565 if (MONO_TYPE_ISSTRUCT (t)) {
1566 align = MAX (align, sizeof (gpointer));
1567 align = MAX (align, mono_class_min_align (mono_class_from_mono_type (t)));
1572 offset += align - 1;
1573 offset &= ~(align - 1);
1577 offset += align - 1;
1578 offset &= ~(align - 1);
1583 if (*stack_align == 0)
1584 *stack_align = align;
1587 offsets [vmv->idx] = slot;
1590 for (i = 0; i < MONO_TYPE_PINNED; ++i) {
1591 if (scalar_stack_slots [i].active)
1592 g_list_free (scalar_stack_slots [i].active);
1594 for (i = 0; i < nvtypes; ++i) {
1595 if (vtype_stack_slots [i].active)
1596 g_list_free (vtype_stack_slots [i].active);
1599 cfg->stat_locals_stack_size += offset;
1601 *stack_size = offset;
1606 * mono_allocate_stack_slots:
1608 * Allocate stack slots for all non register allocated variables using a
1609 * linear scan algorithm.
1610 * Returns: an array of stack offsets.
1611 * STACK_SIZE is set to the amount of stack space needed.
1612 * STACK_ALIGN is set to the alignment needed by the locals area.
1615 mono_allocate_stack_slots (MonoCompile *cfg, gboolean backward, guint32 *stack_size, guint32 *stack_align)
1617 int i, slot, offset, size;
1622 GList *vars = NULL, *l;
1623 StackSlotInfo *scalar_stack_slots, *vtype_stack_slots, *slot_info;
1626 gboolean reuse_slot;
1628 if ((cfg->num_varinfo > 0) && MONO_VARINFO (cfg, 0)->interval)
1629 return mono_allocate_stack_slots2 (cfg, backward, stack_size, stack_align);
1631 scalar_stack_slots = mono_mempool_alloc0 (cfg->mempool, sizeof (StackSlotInfo) * MONO_TYPE_PINNED);
1632 vtype_stack_slots = NULL;
1635 offsets = mono_mempool_alloc (cfg->mempool, sizeof (gint32) * cfg->num_varinfo);
1636 for (i = 0; i < cfg->num_varinfo; ++i)
1639 for (i = cfg->locals_start; i < cfg->num_varinfo; i++) {
1640 inst = cfg->varinfo [i];
1641 vmv = MONO_VARINFO (cfg, i);
1643 if ((inst->flags & MONO_INST_IS_DEAD) || inst->opcode == OP_REGVAR || inst->opcode == OP_REGOFFSET)
1646 vars = g_list_prepend (vars, vmv);
1649 vars = mono_varlist_sort (cfg, vars, 0);
1651 *stack_align = sizeof(mgreg_t);
1652 for (l = vars; l; l = l->next) {
1654 inst = cfg->varinfo [vmv->idx];
1656 t = mono_type_get_underlying_type (inst->inst_vtype);
1657 if (cfg->gsharedvt && mini_is_gsharedvt_variable_type (t))
1660 /* inst->backend.is_pinvoke indicates native sized value types, this is used by the
1661 * pinvoke wrappers when they call functions returning structures */
1662 if (inst->backend.is_pinvoke && MONO_TYPE_ISSTRUCT (t) && t->type != MONO_TYPE_TYPEDBYREF) {
1663 size = mono_class_native_size (mono_class_from_mono_type (t), &align);
1667 size = mini_type_stack_size (t, &ialign);
1670 if (mono_class_from_mono_type (t)->exception_type)
1671 mono_cfg_set_exception (cfg, MONO_EXCEPTION_TYPE_LOAD);
1673 if (MONO_CLASS_IS_SIMD (cfg, mono_class_from_mono_type (t)))
1678 if (cfg->disable_reuse_stack_slots)
1681 t = mini_get_underlying_type (t);
1683 case MONO_TYPE_GENERICINST:
1684 if (!mono_type_generic_inst_is_valuetype (t)) {
1685 slot_info = &scalar_stack_slots [t->type];
1689 case MONO_TYPE_VALUETYPE:
1690 if (!vtype_stack_slots)
1691 vtype_stack_slots = mono_mempool_alloc0 (cfg->mempool, sizeof (StackSlotInfo) * 256);
1692 for (i = 0; i < nvtypes; ++i)
1693 if (t->data.klass == vtype_stack_slots [i].vtype)
1696 slot_info = &vtype_stack_slots [i];
1698 g_assert (nvtypes < 256);
1699 vtype_stack_slots [nvtypes].vtype = t->data.klass;
1700 slot_info = &vtype_stack_slots [nvtypes];
1703 if (cfg->disable_reuse_ref_stack_slots)
1710 #if SIZEOF_VOID_P == 4
1715 if (cfg->disable_ref_noref_stack_slot_share) {
1716 slot_info = &scalar_stack_slots [MONO_TYPE_I];
1721 case MONO_TYPE_CLASS:
1722 case MONO_TYPE_OBJECT:
1723 case MONO_TYPE_ARRAY:
1724 case MONO_TYPE_SZARRAY:
1725 case MONO_TYPE_STRING:
1726 /* Share non-float stack slots of the same size */
1727 slot_info = &scalar_stack_slots [MONO_TYPE_CLASS];
1728 if (cfg->disable_reuse_ref_stack_slots)
1732 case MONO_TYPE_MVAR:
1733 slot_info = &scalar_stack_slots [t->type];
1736 slot_info = &scalar_stack_slots [t->type];
1741 if (cfg->comp_done & MONO_COMP_LIVENESS) {
1742 //printf ("START %2d %08x %08x\n", vmv->idx, vmv->range.first_use.abs_pos, vmv->range.last_use.abs_pos);
1744 /* expire old intervals in active */
1745 while (slot_info->active) {
1746 MonoMethodVar *amv = (MonoMethodVar *)slot_info->active->data;
1748 if (amv->range.last_use.abs_pos > vmv->range.first_use.abs_pos)
1751 //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);
1753 slot_info->active = g_list_delete_link (slot_info->active, slot_info->active);
1754 slot_info->slots = g_slist_prepend_mempool (cfg->mempool, slot_info->slots, GINT_TO_POINTER (offsets [amv->idx]));
1758 * This also handles the case when the variable is used in an
1759 * exception region, as liveness info is not computed there.
1762 * FIXME: All valuetypes are marked as INDIRECT because of LDADDR
1765 if (! (inst->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT))) {
1766 if (slot_info->slots) {
1767 slot = GPOINTER_TO_INT (slot_info->slots->data);
1769 slot_info->slots = slot_info->slots->next;
1772 slot_info->active = mono_varlist_insert_sorted (cfg, slot_info->active, vmv, TRUE);
1777 static int count = 0;
1781 if (count == atoi (g_getenv ("COUNT")))
1782 printf ("LAST: %s\n", mono_method_full_name (cfg->method, TRUE));
1783 if (count > atoi (g_getenv ("COUNT")))
1786 mono_print_ins (inst);
1791 if (inst->flags & MONO_INST_LMF) {
1793 * This variable represents a MonoLMF structure, which has no corresponding
1794 * CLR type, so hard-code its size/alignment.
1796 size = sizeof (MonoLMF);
1797 align = sizeof (mgreg_t);
1804 if (slot == 0xffffff) {
1806 * Allways allocate valuetypes to sizeof (gpointer) to allow more
1807 * efficient copying (and to work around the fact that OP_MEMCPY
1808 * and OP_MEMSET ignores alignment).
1810 if (MONO_TYPE_ISSTRUCT (t)) {
1811 align = MAX (align, sizeof (gpointer));
1812 align = MAX (align, mono_class_min_align (mono_class_from_mono_type (t)));
1814 * Align the size too so the code generated for passing vtypes in
1815 * registers doesn't overwrite random locals.
1817 size = (size + (align - 1)) & ~(align -1);
1822 offset += align - 1;
1823 offset &= ~(align - 1);
1827 offset += align - 1;
1828 offset &= ~(align - 1);
1833 *stack_align = MAX (*stack_align, align);
1836 offsets [vmv->idx] = slot;
1839 for (i = 0; i < MONO_TYPE_PINNED; ++i) {
1840 if (scalar_stack_slots [i].active)
1841 g_list_free (scalar_stack_slots [i].active);
1843 for (i = 0; i < nvtypes; ++i) {
1844 if (vtype_stack_slots [i].active)
1845 g_list_free (vtype_stack_slots [i].active);
1848 cfg->stat_locals_stack_size += offset;
1850 *stack_size = offset;
1854 #define EMUL_HIT_SHIFT 3
1855 #define EMUL_HIT_MASK ((1 << EMUL_HIT_SHIFT) - 1)
1856 /* small hit bitmap cache */
1857 static mono_byte emul_opcode_hit_cache [(OP_LAST>>EMUL_HIT_SHIFT) + 1] = {0};
1858 static short emul_opcode_num = 0;
1859 static short emul_opcode_alloced = 0;
1860 static short *emul_opcode_opcodes;
1861 static MonoJitICallInfo **emul_opcode_map;
1864 mono_find_jit_opcode_emulation (int opcode)
1866 g_assert (opcode >= 0 && opcode <= OP_LAST);
1867 if (emul_opcode_hit_cache [opcode >> (EMUL_HIT_SHIFT + 3)] & (1 << (opcode & EMUL_HIT_MASK))) {
1869 for (i = 0; i < emul_opcode_num; ++i) {
1870 if (emul_opcode_opcodes [i] == opcode)
1871 return emul_opcode_map [i];
1878 mini_register_opcode_emulation (int opcode, const char *name, const char *sigstr, gpointer func, const char *symbol, gboolean no_throw)
1880 MonoJitICallInfo *info;
1881 MonoMethodSignature *sig = mono_create_icall_signature (sigstr);
1883 g_assert (!sig->hasthis);
1884 g_assert (sig->param_count < 3);
1886 /* Opcode emulation functions are assumed to don't call mono_raise_exception () */
1887 info = mono_register_jit_icall_full (func, name, sig, no_throw, TRUE, symbol);
1889 if (emul_opcode_num >= emul_opcode_alloced) {
1890 int incr = emul_opcode_alloced? emul_opcode_alloced/2: 16;
1891 emul_opcode_alloced += incr;
1892 emul_opcode_map = g_realloc (emul_opcode_map, sizeof (emul_opcode_map [0]) * emul_opcode_alloced);
1893 emul_opcode_opcodes = g_realloc (emul_opcode_opcodes, sizeof (emul_opcode_opcodes [0]) * emul_opcode_alloced);
1895 emul_opcode_map [emul_opcode_num] = info;
1896 emul_opcode_opcodes [emul_opcode_num] = opcode;
1898 emul_opcode_hit_cache [opcode >> (EMUL_HIT_SHIFT + 3)] |= (1 << (opcode & EMUL_HIT_MASK));
1902 print_dfn (MonoCompile *cfg)
1910 char *method_name = mono_method_full_name (cfg->method, TRUE);
1911 g_print ("IR code for method %s\n", method_name);
1912 g_free (method_name);
1915 for (i = 0; i < cfg->num_bblocks; ++i) {
1916 bb = cfg->bblocks [i];
1917 /*if (bb->cil_code) {
1918 char* code1, *code2;
1919 code1 = mono_disasm_code_one (NULL, cfg->method, bb->cil_code, NULL);
1920 if (bb->last_ins->cil_code)
1921 code2 = mono_disasm_code_one (NULL, cfg->method, bb->last_ins->cil_code, NULL);
1923 code2 = g_strdup ("");
1925 code1 [strlen (code1) - 1] = 0;
1926 code = g_strdup_printf ("%s -> %s", code1, code2);
1930 code = g_strdup ("\n");
1931 g_print ("\nBB%d (%d) (len: %d): %s", bb->block_num, i, bb->cil_length, code);
1932 MONO_BB_FOR_EACH_INS (bb, c) {
1933 mono_print_ins_index (-1, c);
1936 g_print ("\tprev:");
1937 for (j = 0; j < bb->in_count; ++j) {
1938 g_print (" BB%d", bb->in_bb [j]->block_num);
1940 g_print ("\t\tsucc:");
1941 for (j = 0; j < bb->out_count; ++j) {
1942 g_print (" BB%d", bb->out_bb [j]->block_num);
1944 g_print ("\n\tidom: BB%d\n", bb->idom? bb->idom->block_num: -1);
1947 g_assert (mono_bitset_test_fast (bb->dominators, bb->idom->dfn));
1950 mono_blockset_print (cfg, bb->dominators, "\tdominators", bb->idom? bb->idom->dfn: -1);
1952 mono_blockset_print (cfg, bb->dfrontier, "\tdfrontier", -1);
1960 mono_bblock_add_inst (MonoBasicBlock *bb, MonoInst *inst)
1962 MONO_ADD_INS (bb, inst);
1966 mono_bblock_insert_after_ins (MonoBasicBlock *bb, MonoInst *ins, MonoInst *ins_to_insert)
1970 bb->code = ins_to_insert;
1972 /* Link with next */
1973 ins_to_insert->next = ins;
1975 ins->prev = ins_to_insert;
1977 if (bb->last_ins == NULL)
1978 bb->last_ins = ins_to_insert;
1980 /* Link with next */
1981 ins_to_insert->next = ins->next;
1983 ins->next->prev = ins_to_insert;
1985 /* Link with previous */
1986 ins->next = ins_to_insert;
1987 ins_to_insert->prev = ins;
1989 if (bb->last_ins == ins)
1990 bb->last_ins = ins_to_insert;
1995 mono_bblock_insert_before_ins (MonoBasicBlock *bb, MonoInst *ins, MonoInst *ins_to_insert)
2000 ins->prev = ins_to_insert;
2001 bb->code = ins_to_insert;
2002 ins_to_insert->next = ins;
2003 if (bb->last_ins == NULL)
2004 bb->last_ins = ins_to_insert;
2006 /* Link with previous */
2008 ins->prev->next = ins_to_insert;
2009 ins_to_insert->prev = ins->prev;
2011 /* Link with next */
2012 ins->prev = ins_to_insert;
2013 ins_to_insert->next = ins;
2015 if (bb->code == ins)
2016 bb->code = ins_to_insert;
2021 * mono_verify_bblock:
2023 * Verify that the next and prev pointers are consistent inside the instructions in BB.
2026 mono_verify_bblock (MonoBasicBlock *bb)
2028 MonoInst *ins, *prev;
2031 for (ins = bb->code; ins; ins = ins->next) {
2032 g_assert (ins->prev == prev);
2036 g_assert (!bb->last_ins->next);
2042 * Perform consistency checks on the JIT data structures and the IR
2045 mono_verify_cfg (MonoCompile *cfg)
2049 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
2050 mono_verify_bblock (bb);
2054 mono_destroy_compile (MonoCompile *cfg)
2059 mono_metadata_free_mh (cfg->header);
2060 //mono_mempool_stats (cfg->mempool);
2061 mono_free_loop_info (cfg);
2063 mono_regstate_free (cfg->rs);
2065 g_hash_table_destroy (cfg->spvars);
2067 g_hash_table_destroy (cfg->exvars);
2068 for (l = cfg->headers_to_free; l; l = l->next)
2069 mono_metadata_free_mh (l->data);
2070 g_list_free (cfg->ldstr_list);
2071 g_hash_table_destroy (cfg->token_info_hash);
2072 if (cfg->abs_patches)
2073 g_hash_table_destroy (cfg->abs_patches);
2074 mono_mempool_destroy (cfg->mempool);
2076 mono_debug_free_method (cfg);
2078 g_free (cfg->varinfo);
2080 g_free (cfg->exception_message);
2085 mono_create_tls_get_offset (MonoCompile *cfg, int offset)
2089 if (!MONO_ARCH_HAVE_TLS_GET)
2095 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
2096 ins->dreg = mono_alloc_preg (cfg);
2097 ins->inst_offset = offset;
2102 mini_tls_get_supported (MonoCompile *cfg, MonoTlsKey key)
2104 if (!MONO_ARCH_HAVE_TLS_GET)
2107 if (cfg->compile_aot)
2108 return ARCH_HAVE_TLS_GET_REG;
2110 return mini_get_tls_offset (key) != -1;
2114 mono_create_tls_get (MonoCompile *cfg, MonoTlsKey key)
2116 if (!MONO_ARCH_HAVE_TLS_GET)
2120 * TLS offsets might be different at AOT time, so load them from a GOT slot and
2121 * use a different opcode.
2123 if (cfg->compile_aot) {
2124 if (ARCH_HAVE_TLS_GET_REG) {
2127 EMIT_NEW_TLS_OFFSETCONST (cfg, c, key);
2128 MONO_INST_NEW (cfg, ins, OP_TLS_GET_REG);
2129 ins->dreg = mono_alloc_preg (cfg);
2130 ins->sreg1 = c->dreg;
2137 return mono_create_tls_get_offset (cfg, mini_get_tls_offset (key));
2141 mono_get_jit_tls_intrinsic (MonoCompile *cfg)
2143 return mono_create_tls_get (cfg, TLS_KEY_JIT_TLS);
2147 mono_get_domain_intrinsic (MonoCompile* cfg)
2149 return mono_create_tls_get (cfg, TLS_KEY_DOMAIN);
2153 mono_get_thread_intrinsic (MonoCompile* cfg)
2155 return mono_create_tls_get (cfg, TLS_KEY_THREAD);
2159 mono_get_lmf_intrinsic (MonoCompile* cfg)
2161 return mono_create_tls_get (cfg, TLS_KEY_LMF);
2165 mono_get_lmf_addr_intrinsic (MonoCompile* cfg)
2167 return mono_create_tls_get (cfg, TLS_KEY_LMF_ADDR);
2171 mono_add_patch_info (MonoCompile *cfg, int ip, MonoJumpInfoType type, gconstpointer target)
2173 MonoJumpInfo *ji = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfo));
2177 ji->data.target = target;
2178 ji->next = cfg->patch_info;
2180 cfg->patch_info = ji;
2184 mono_add_patch_info_rel (MonoCompile *cfg, int ip, MonoJumpInfoType type, gconstpointer target, int relocation)
2186 MonoJumpInfo *ji = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfo));
2190 ji->relocation = relocation;
2191 ji->data.target = target;
2192 ji->next = cfg->patch_info;
2194 cfg->patch_info = ji;
2198 mono_remove_patch_info (MonoCompile *cfg, int ip)
2200 MonoJumpInfo **ji = &cfg->patch_info;
2203 if ((*ji)->ip.i == ip)
2206 ji = &((*ji)->next);
2211 mono_add_seq_point (MonoCompile *cfg, MonoBasicBlock *bb, MonoInst *ins, int native_offset)
2213 ins->inst_offset = native_offset;
2214 g_ptr_array_add (cfg->seq_points, ins);
2216 bb->seq_points = g_slist_prepend_mempool (cfg->mempool, bb->seq_points, ins);
2217 bb->last_seq_point = ins;
2222 mono_add_var_location (MonoCompile *cfg, MonoInst *var, gboolean is_reg, int reg, int offset, int from, int to)
2224 MonoDwarfLocListEntry *entry = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoDwarfLocListEntry));
2227 g_assert (offset == 0);
2229 entry->is_reg = is_reg;
2231 entry->offset = offset;
2235 if (var == cfg->args [0])
2236 cfg->this_loclist = g_slist_append_mempool (cfg->mempool, cfg->this_loclist, entry);
2237 else if (var == cfg->rgctx_var)
2238 cfg->rgctx_loclist = g_slist_append_mempool (cfg->mempool, cfg->rgctx_loclist, entry);
2242 mono_compile_create_vars (MonoCompile *cfg)
2244 MonoMethodSignature *sig;
2245 MonoMethodHeader *header;
2248 header = cfg->header;
2250 sig = mono_method_signature (cfg->method);
2252 if (!MONO_TYPE_IS_VOID (sig->ret)) {
2253 cfg->ret = mono_compile_create_var (cfg, sig->ret, OP_ARG);
2254 /* Inhibit optimizations */
2255 cfg->ret->flags |= MONO_INST_VOLATILE;
2257 if (cfg->verbose_level > 2)
2258 g_print ("creating vars\n");
2260 cfg->args = mono_mempool_alloc0 (cfg->mempool, (sig->param_count + sig->hasthis) * sizeof (MonoInst*));
2263 cfg->args [0] = mono_compile_create_var (cfg, &cfg->method->klass->this_arg, OP_ARG);
2265 for (i = 0; i < sig->param_count; ++i) {
2266 cfg->args [i + sig->hasthis] = mono_compile_create_var (cfg, sig->params [i], OP_ARG);
2269 if (cfg->verbose_level > 2) {
2271 printf ("\treturn : ");
2272 mono_print_ins (cfg->ret);
2276 printf ("\tthis: ");
2277 mono_print_ins (cfg->args [0]);
2280 for (i = 0; i < sig->param_count; ++i) {
2281 printf ("\targ [%d]: ", i);
2282 mono_print_ins (cfg->args [i + sig->hasthis]);
2286 cfg->locals_start = cfg->num_varinfo;
2287 cfg->locals = mono_mempool_alloc0 (cfg->mempool, header->num_locals * sizeof (MonoInst*));
2289 if (cfg->verbose_level > 2)
2290 g_print ("creating locals\n");
2292 for (i = 0; i < header->num_locals; ++i)
2293 cfg->locals [i] = mono_compile_create_var (cfg, header->locals [i], OP_LOCAL);
2295 if (cfg->verbose_level > 2)
2296 g_print ("locals done\n");
2298 mono_arch_create_vars (cfg);
2300 if (cfg->method->save_lmf && cfg->create_lmf_var) {
2301 MonoInst *lmf_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
2302 lmf_var->flags |= MONO_INST_VOLATILE;
2303 lmf_var->flags |= MONO_INST_LMF;
2304 cfg->lmf_var = lmf_var;
2309 mono_print_code (MonoCompile *cfg, const char* msg)
2313 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
2314 mono_print_bb (bb, msg);
2318 mono_postprocess_patches (MonoCompile *cfg)
2320 MonoJumpInfo *patch_info;
2323 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
2324 switch (patch_info->type) {
2325 case MONO_PATCH_INFO_ABS: {
2326 MonoJitICallInfo *info = mono_find_jit_icall_by_addr (patch_info->data.target);
2329 * Change patches of type MONO_PATCH_INFO_ABS into patches describing the
2333 //printf ("TEST %s %p\n", info->name, patch_info->data.target);
2334 /* for these array methods we currently register the same function pointer
2335 * since it's a vararg function. But this means that mono_find_jit_icall_by_addr ()
2336 * will return the incorrect one depending on the order they are registered.
2337 * See tests/test-arr.cs
2339 if (strstr (info->name, "ves_array_new_va_") == NULL && strstr (info->name, "ves_array_element_address_") == NULL) {
2340 patch_info->type = MONO_PATCH_INFO_INTERNAL_METHOD;
2341 patch_info->data.name = info->name;
2345 if (patch_info->type == MONO_PATCH_INFO_ABS) {
2346 if (cfg->abs_patches) {
2347 MonoJumpInfo *abs_ji = g_hash_table_lookup (cfg->abs_patches, patch_info->data.target);
2349 patch_info->type = abs_ji->type;
2350 patch_info->data.target = abs_ji->data.target;
2357 case MONO_PATCH_INFO_SWITCH: {
2359 #if defined(__native_client__) && defined(__native_client_codegen__)
2360 /* This memory will leak. */
2361 /* TODO: can we free this when */
2362 /* making the final jump table? */
2363 table = g_malloc0 (sizeof(gpointer) * patch_info->data.table->table_size);
2365 if (cfg->method->dynamic) {
2366 table = mono_code_manager_reserve (cfg->dynamic_info->code_mp, sizeof (gpointer) * patch_info->data.table->table_size);
2368 table = mono_domain_code_reserve (cfg->domain, sizeof (gpointer) * patch_info->data.table->table_size);
2372 for (i = 0; i < patch_info->data.table->table_size; i++) {
2373 /* Might be NULL if the switch is eliminated */
2374 if (patch_info->data.table->table [i]) {
2375 g_assert (patch_info->data.table->table [i]->native_offset);
2376 table [i] = GINT_TO_POINTER (patch_info->data.table->table [i]->native_offset);
2381 patch_info->data.table->table = (MonoBasicBlock**)table;
2384 case MONO_PATCH_INFO_METHOD_JUMP: {
2385 MonoJumpList *jlist;
2386 MonoDomain *domain = cfg->domain;
2387 unsigned char *ip = cfg->native_code + patch_info->ip.i;
2388 #if defined(__native_client__) && defined(__native_client_codegen__)
2389 /* When this jump target gets evaluated, the method */
2390 /* will be installed in the dynamic code section, */
2391 /* not at the location of cfg->native_code. */
2392 ip = nacl_inverse_modify_patch_target (cfg->native_code) + patch_info->ip.i;
2395 mono_domain_lock (domain);
2396 jlist = g_hash_table_lookup (domain_jit_info (domain)->jump_target_hash, patch_info->data.method);
2398 jlist = mono_domain_alloc0 (domain, sizeof (MonoJumpList));
2399 g_hash_table_insert (domain_jit_info (domain)->jump_target_hash, patch_info->data.method, jlist);
2401 jlist->list = g_slist_prepend (jlist->list, ip);
2402 mono_domain_unlock (domain);
2413 mono_codegen (MonoCompile *cfg)
2416 int max_epilog_size;
2418 MonoDomain *code_domain;
2419 guint unwindlen = 0;
2421 if (mono_using_xdebug)
2423 * Recent gdb versions have trouble processing symbol files containing
2424 * overlapping address ranges, so allocate all code from the code manager
2425 * of the root domain. (#666152).
2427 code_domain = mono_get_root_domain ();
2429 code_domain = cfg->domain;
2431 #if defined(__native_client_codegen__) && defined(__native_client__)
2434 /* This keeps patch targets from being transformed during
2435 * ordinary method compilation, for local branches and jumps.
2437 nacl_allow_target_modification (FALSE);
2440 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2441 cfg->spill_count = 0;
2442 /* we reuse dfn here */
2443 /* bb->dfn = bb_count++; */
2445 mono_arch_lowering_pass (cfg, bb);
2447 if (cfg->opt & MONO_OPT_PEEPHOLE)
2448 mono_arch_peephole_pass_1 (cfg, bb);
2450 mono_local_regalloc (cfg, bb);
2452 if (cfg->opt & MONO_OPT_PEEPHOLE)
2453 mono_arch_peephole_pass_2 (cfg, bb);
2455 if (cfg->gen_seq_points && !cfg->gen_sdb_seq_points)
2456 mono_bb_deduplicate_op_il_seq_points (cfg, bb);
2459 if (cfg->prof_options & MONO_PROFILE_COVERAGE)
2460 cfg->coverage_info = mono_profiler_coverage_alloc (cfg->method, cfg->num_bblocks);
2462 code = mono_arch_emit_prolog (cfg);
2464 cfg->code_len = code - cfg->native_code;
2465 cfg->prolog_end = cfg->code_len;
2466 cfg->cfa_reg = cfg->cur_cfa_reg;
2467 cfg->cfa_offset = cfg->cur_cfa_offset;
2469 mono_debug_open_method (cfg);
2471 /* emit code all basic blocks */
2472 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2473 bb->native_offset = cfg->code_len;
2474 bb->real_native_offset = cfg->code_len;
2475 //if ((bb == cfg->bb_entry) || !(bb->region == -1 && !bb->dfn))
2476 mono_arch_output_basic_block (cfg, bb);
2477 bb->native_length = cfg->code_len - bb->native_offset;
2479 if (bb == cfg->bb_exit) {
2480 cfg->epilog_begin = cfg->code_len;
2481 mono_arch_emit_epilog (cfg);
2482 cfg->epilog_end = cfg->code_len;
2486 #ifdef __native_client_codegen__
2487 mono_nacl_fix_patches (cfg->native_code, cfg->patch_info);
2489 mono_arch_emit_exceptions (cfg);
2491 max_epilog_size = 0;
2493 /* we always allocate code in cfg->domain->code_mp to increase locality */
2494 cfg->code_size = cfg->code_len + max_epilog_size;
2495 #ifdef __native_client_codegen__
2496 cfg->code_size = NACL_BUNDLE_ALIGN_UP (cfg->code_size);
2498 /* fixme: align to MONO_ARCH_CODE_ALIGNMENT */
2500 #ifdef MONO_ARCH_HAVE_UNWIND_TABLE
2501 unwindlen = mono_arch_unwindinfo_get_size (cfg->arch.unwindinfo);
2504 if (cfg->method->dynamic) {
2505 /* Allocate the code into a separate memory pool so it can be freed */
2506 cfg->dynamic_info = g_new0 (MonoJitDynamicMethodInfo, 1);
2507 cfg->dynamic_info->code_mp = mono_code_manager_new_dynamic ();
2508 mono_domain_lock (cfg->domain);
2509 mono_dynamic_code_hash_insert (cfg->domain, cfg->method, cfg->dynamic_info);
2510 mono_domain_unlock (cfg->domain);
2512 if (mono_using_xdebug)
2513 /* See the comment for cfg->code_domain */
2514 code = mono_domain_code_reserve (code_domain, cfg->code_size + cfg->thunk_area + unwindlen);
2516 code = mono_code_manager_reserve (cfg->dynamic_info->code_mp, cfg->code_size + cfg->thunk_area + unwindlen);
2518 code = mono_domain_code_reserve (code_domain, cfg->code_size + cfg->thunk_area + unwindlen);
2520 #if defined(__native_client_codegen__) && defined(__native_client__)
2521 nacl_allow_target_modification (TRUE);
2523 if (cfg->thunk_area) {
2524 cfg->thunks_offset = cfg->code_size + unwindlen;
2525 cfg->thunks = code + cfg->thunks_offset;
2526 memset (cfg->thunks, 0, cfg->thunk_area);
2530 memcpy (code, cfg->native_code, cfg->code_len);
2531 #if defined(__default_codegen__)
2532 g_free (cfg->native_code);
2533 #elif defined(__native_client_codegen__)
2534 if (cfg->native_code_alloc) {
2535 g_free (cfg->native_code_alloc);
2536 cfg->native_code_alloc = 0;
2538 else if (cfg->native_code) {
2539 g_free (cfg->native_code);
2541 #endif /* __native_client_codegen__ */
2542 cfg->native_code = code;
2543 code = cfg->native_code + cfg->code_len;
2545 /* g_assert (((int)cfg->native_code & (MONO_ARCH_CODE_ALIGNMENT - 1)) == 0); */
2546 mono_postprocess_patches (cfg);
2548 #ifdef VALGRIND_JIT_REGISTER_MAP
2549 if (valgrind_register){
2550 char* nm = mono_method_full_name (cfg->method, TRUE);
2551 VALGRIND_JIT_REGISTER_MAP (nm, cfg->native_code, cfg->native_code + cfg->code_len);
2556 if (cfg->verbose_level > 0) {
2557 char* nm = mono_method_full_name (cfg->method, TRUE);
2558 g_print ("Method %s emitted at %p to %p (code length %d) [%s]\n",
2560 cfg->native_code, cfg->native_code + cfg->code_len, cfg->code_len, cfg->domain->friendly_name);
2565 gboolean is_generic = FALSE;
2567 if (cfg->method->is_inflated || mono_method_get_generic_container (cfg->method) ||
2568 cfg->method->klass->generic_container || cfg->method->klass->generic_class) {
2573 g_assert (is_generic);
2576 #ifdef MONO_ARCH_HAVE_SAVE_UNWIND_INFO
2577 mono_arch_save_unwind_info (cfg);
2580 #if defined(__native_client_codegen__) && defined(__native_client__)
2581 if (!cfg->compile_aot) {
2582 if (cfg->method->dynamic) {
2583 code_dest = nacl_code_manager_get_code_dest(cfg->dynamic_info->code_mp, cfg->native_code);
2585 code_dest = nacl_domain_get_code_dest(cfg->domain, cfg->native_code);
2590 #if defined(__native_client_codegen__)
2591 mono_nacl_fix_patches (cfg->native_code, cfg->patch_info);
2594 #ifdef MONO_ARCH_HAVE_PATCH_CODE_NEW
2599 for (ji = cfg->patch_info; ji; ji = ji->next) {
2600 if (cfg->compile_aot) {
2602 case MONO_PATCH_INFO_BB:
2603 case MONO_PATCH_INFO_LABEL:
2606 /* No need to patch these */
2611 if (ji->type == MONO_PATCH_INFO_NONE)
2614 target = mono_resolve_patch_target (cfg->method, cfg->domain, cfg->native_code, ji, cfg->run_cctors);
2615 mono_arch_patch_code_new (cfg, cfg->domain, cfg->native_code, ji, target);
2619 mono_arch_patch_code (cfg, cfg->method, cfg->domain, cfg->native_code, cfg->patch_info, cfg->run_cctors);
2622 if (cfg->method->dynamic) {
2623 if (mono_using_xdebug)
2624 mono_domain_code_commit (code_domain, cfg->native_code, cfg->code_size, cfg->code_len);
2626 mono_code_manager_commit (cfg->dynamic_info->code_mp, cfg->native_code, cfg->code_size, cfg->code_len);
2628 mono_domain_code_commit (code_domain, cfg->native_code, cfg->code_size, cfg->code_len);
2630 #if defined(__native_client_codegen__) && defined(__native_client__)
2631 cfg->native_code = code_dest;
2633 mono_profiler_code_buffer_new (cfg->native_code, cfg->code_len, MONO_PROFILER_CODE_BUFFER_METHOD, cfg->method);
2635 mono_arch_flush_icache (cfg->native_code, cfg->code_len);
2637 mono_debug_close_method (cfg);
2639 #ifdef MONO_ARCH_HAVE_UNWIND_TABLE
2640 mono_arch_unwindinfo_install_unwind_info (&cfg->arch.unwindinfo, cfg->native_code, cfg->code_len);
2645 compute_reachable (MonoBasicBlock *bb)
2649 if (!(bb->flags & BB_VISITED)) {
2650 bb->flags |= BB_VISITED;
2651 for (i = 0; i < bb->out_count; ++i)
2652 compute_reachable (bb->out_bb [i]);
2657 mono_handle_out_of_line_bblock (MonoCompile *cfg)
2660 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
2661 if (bb->next_bb && bb->next_bb->out_of_line && bb->last_ins && !MONO_IS_BRANCH_OP (bb->last_ins)) {
2663 MONO_INST_NEW (cfg, ins, OP_BR);
2664 MONO_ADD_INS (bb, ins);
2665 ins->inst_target_bb = bb->next_bb;
2671 create_jit_info (MonoCompile *cfg, MonoMethod *method_to_compile)
2674 MonoMethodHeader *header;
2676 MonoJitInfoFlags flags = JIT_INFO_NONE;
2677 int num_clauses, num_holes = 0;
2678 guint32 stack_size = 0;
2680 g_assert (method_to_compile == cfg->method);
2681 header = cfg->header;
2684 flags |= JIT_INFO_HAS_GENERIC_JIT_INFO;
2686 if (cfg->arch_eh_jit_info) {
2687 MonoJitArgumentInfo *arg_info;
2688 MonoMethodSignature *sig = mono_method_signature (cfg->method_to_register);
2691 * This cannot be computed during stack walking, as
2692 * mono_arch_get_argument_info () is not signal safe.
2694 arg_info = g_newa (MonoJitArgumentInfo, sig->param_count + 1);
2695 stack_size = mono_arch_get_argument_info (sig, sig->param_count, arg_info);
2698 flags |= JIT_INFO_HAS_ARCH_EH_INFO;
2701 if (cfg->has_unwind_info_for_epilog && !(flags & JIT_INFO_HAS_ARCH_EH_INFO))
2702 flags |= JIT_INFO_HAS_ARCH_EH_INFO;
2704 if (cfg->thunk_area)
2705 flags |= JIT_INFO_HAS_THUNK_INFO;
2707 if (cfg->try_block_holes) {
2708 for (tmp = cfg->try_block_holes; tmp; tmp = tmp->next) {
2709 TryBlockHole *hole = tmp->data;
2710 MonoExceptionClause *ec = hole->clause;
2711 int hole_end = hole->basic_block->native_offset + hole->basic_block->native_length;
2712 MonoBasicBlock *clause_last_bb = cfg->cil_offset_to_bb [ec->try_offset + ec->try_len];
2713 g_assert (clause_last_bb);
2715 /* Holes at the end of a try region can be represented by simply reducing the size of the block itself.*/
2716 if (clause_last_bb->native_offset != hole_end)
2720 flags |= JIT_INFO_HAS_TRY_BLOCK_HOLES;
2721 if (G_UNLIKELY (cfg->verbose_level >= 4))
2722 printf ("Number of try block holes %d\n", num_holes);
2725 if (COMPILE_LLVM (cfg))
2726 num_clauses = cfg->llvm_ex_info_len;
2728 num_clauses = header->num_clauses;
2730 if (cfg->method->dynamic)
2731 jinfo = g_malloc0 (mono_jit_info_size (flags, num_clauses, num_holes));
2733 jinfo = mono_domain_alloc0 (cfg->domain, mono_jit_info_size (flags, num_clauses, num_holes));
2734 mono_jit_info_init (jinfo, cfg->method_to_register, cfg->native_code, cfg->code_len, flags, num_clauses, num_holes);
2735 jinfo->domain_neutral = (cfg->opt & MONO_OPT_SHARED) != 0;
2737 if (COMPILE_LLVM (cfg))
2738 jinfo->from_llvm = TRUE;
2742 MonoGenericJitInfo *gi;
2743 GSList *loclist = NULL;
2745 gi = mono_jit_info_get_generic_jit_info (jinfo);
2748 if (cfg->method->dynamic)
2749 gi->generic_sharing_context = g_new0 (MonoGenericSharingContext, 1);
2751 gi->generic_sharing_context = mono_domain_alloc0 (cfg->domain, sizeof (MonoGenericSharingContext));
2752 mini_init_gsctx (cfg->method->dynamic ? NULL : cfg->domain, NULL, cfg->gsctx_context, gi->generic_sharing_context);
2754 if ((method_to_compile->flags & METHOD_ATTRIBUTE_STATIC) ||
2755 mini_method_get_context (method_to_compile)->method_inst ||
2756 method_to_compile->klass->valuetype) {
2757 g_assert (cfg->rgctx_var);
2762 if ((method_to_compile->flags & METHOD_ATTRIBUTE_STATIC) ||
2763 mini_method_get_context (method_to_compile)->method_inst ||
2764 method_to_compile->klass->valuetype) {
2765 inst = cfg->rgctx_var;
2766 if (!COMPILE_LLVM (cfg))
2767 g_assert (inst->opcode == OP_REGOFFSET);
2768 loclist = cfg->rgctx_loclist;
2770 inst = cfg->args [0];
2771 loclist = cfg->this_loclist;
2775 /* Needed to handle async exceptions */
2779 gi->nlocs = g_slist_length (loclist);
2780 if (cfg->method->dynamic)
2781 gi->locations = g_malloc0 (gi->nlocs * sizeof (MonoDwarfLocListEntry));
2783 gi->locations = mono_domain_alloc0 (cfg->domain, gi->nlocs * sizeof (MonoDwarfLocListEntry));
2785 for (l = loclist; l; l = l->next) {
2786 memcpy (&(gi->locations [i]), l->data, sizeof (MonoDwarfLocListEntry));
2791 if (COMPILE_LLVM (cfg)) {
2792 g_assert (cfg->llvm_this_reg != -1);
2793 gi->this_in_reg = 0;
2794 gi->this_reg = cfg->llvm_this_reg;
2795 gi->this_offset = cfg->llvm_this_offset;
2796 } else if (inst->opcode == OP_REGVAR) {
2797 gi->this_in_reg = 1;
2798 gi->this_reg = inst->dreg;
2800 g_assert (inst->opcode == OP_REGOFFSET);
2802 g_assert (inst->inst_basereg == X86_EBP);
2803 #elif defined(TARGET_AMD64)
2804 g_assert (inst->inst_basereg == X86_EBP || inst->inst_basereg == X86_ESP);
2806 g_assert (inst->inst_offset >= G_MININT32 && inst->inst_offset <= G_MAXINT32);
2808 gi->this_in_reg = 0;
2809 gi->this_reg = inst->inst_basereg;
2810 gi->this_offset = inst->inst_offset;
2815 MonoTryBlockHoleTableJitInfo *table;
2818 table = mono_jit_info_get_try_block_hole_table_info (jinfo);
2819 table->num_holes = (guint16)num_holes;
2821 for (tmp = cfg->try_block_holes; tmp; tmp = tmp->next) {
2822 guint32 start_bb_offset;
2823 MonoTryBlockHoleJitInfo *hole;
2824 TryBlockHole *hole_data = tmp->data;
2825 MonoExceptionClause *ec = hole_data->clause;
2826 int hole_end = hole_data->basic_block->native_offset + hole_data->basic_block->native_length;
2827 MonoBasicBlock *clause_last_bb = cfg->cil_offset_to_bb [ec->try_offset + ec->try_len];
2828 g_assert (clause_last_bb);
2830 /* Holes at the end of a try region can be represented by simply reducing the size of the block itself.*/
2831 if (clause_last_bb->native_offset == hole_end)
2834 start_bb_offset = hole_data->start_offset - hole_data->basic_block->native_offset;
2835 hole = &table->holes [i++];
2836 hole->clause = hole_data->clause - &header->clauses [0];
2837 hole->offset = (guint32)hole_data->start_offset;
2838 hole->length = (guint16)(hole_data->basic_block->native_length - start_bb_offset);
2840 if (G_UNLIKELY (cfg->verbose_level >= 4))
2841 printf ("\tTry block hole at eh clause %d offset %x length %x\n", hole->clause, hole->offset, hole->length);
2843 g_assert (i == num_holes);
2846 if (jinfo->has_arch_eh_info) {
2847 MonoArchEHJitInfo *info;
2849 info = mono_jit_info_get_arch_eh_info (jinfo);
2851 info->stack_size = stack_size;
2854 if (cfg->thunk_area) {
2855 MonoThunkJitInfo *info;
2857 info = mono_jit_info_get_thunk_info (jinfo);
2858 info->thunks_offset = cfg->thunks_offset;
2859 info->thunks_size = cfg->thunk_area;
2862 if (COMPILE_LLVM (cfg)) {
2864 memcpy (&jinfo->clauses [0], &cfg->llvm_ex_info [0], num_clauses * sizeof (MonoJitExceptionInfo));
2865 } else if (header->num_clauses) {
2868 for (i = 0; i < header->num_clauses; i++) {
2869 MonoExceptionClause *ec = &header->clauses [i];
2870 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2871 MonoBasicBlock *tblock;
2872 MonoInst *exvar, *spvar;
2874 ei->flags = ec->flags;
2876 if (G_UNLIKELY (cfg->verbose_level >= 4))
2877 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);
2880 * The spvars are needed by mono_arch_install_handler_block_guard ().
2882 if (ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY) {
2885 region = ((i + 1) << 8) | MONO_REGION_FINALLY | ec->flags;
2886 spvar = mono_find_spvar_for_region (cfg, region);
2888 ei->exvar_offset = spvar->inst_offset;
2890 exvar = mono_find_exvar_for_offset (cfg, ec->handler_offset);
2891 ei->exvar_offset = exvar ? exvar->inst_offset : 0;
2894 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER) {
2895 tblock = cfg->cil_offset_to_bb [ec->data.filter_offset];
2897 ei->data.filter = cfg->native_code + tblock->native_offset;
2899 ei->data.catch_class = ec->data.catch_class;
2902 tblock = cfg->cil_offset_to_bb [ec->try_offset];
2904 g_assert (tblock->native_offset);
2905 ei->try_start = cfg->native_code + tblock->native_offset;
2906 if (tblock->extend_try_block) {
2908 * Extend the try block backwards to include parts of the previous call
2911 ei->try_start = (guint8*)ei->try_start - MONO_ARCH_MONITOR_ENTER_ADJUSTMENT;
2913 tblock = cfg->cil_offset_to_bb [ec->try_offset + ec->try_len];
2915 if (!tblock->native_offset) {
2917 for (j = ec->try_offset + ec->try_len, end = ec->try_offset; j >= end; --j) {
2918 MonoBasicBlock *bb = cfg->cil_offset_to_bb [j];
2919 if (bb && bb->native_offset) {
2925 ei->try_end = cfg->native_code + tblock->native_offset;
2926 g_assert (tblock->native_offset);
2927 tblock = cfg->cil_offset_to_bb [ec->handler_offset];
2929 ei->handler_start = cfg->native_code + tblock->native_offset;
2931 for (tmp = cfg->try_block_holes; tmp; tmp = tmp->next) {
2932 TryBlockHole *hole = tmp->data;
2933 gpointer hole_end = cfg->native_code + (hole->basic_block->native_offset + hole->basic_block->native_length);
2934 if (hole->clause == ec && hole_end == ei->try_end) {
2935 if (G_UNLIKELY (cfg->verbose_level >= 4))
2936 printf ("\tShortening try block %d from %x to %x\n", i, (int)((guint8*)ei->try_end - cfg->native_code), hole->start_offset);
2938 ei->try_end = cfg->native_code + hole->start_offset;
2943 if (ec->flags == MONO_EXCEPTION_CLAUSE_FINALLY) {
2945 if (ec->handler_offset + ec->handler_len < header->code_size) {
2946 tblock = cfg->cil_offset_to_bb [ec->handler_offset + ec->handler_len];
2947 if (tblock->native_offset) {
2948 end_offset = tblock->native_offset;
2952 for (j = ec->handler_offset + ec->handler_len, end = ec->handler_offset; j >= end; --j) {
2953 MonoBasicBlock *bb = cfg->cil_offset_to_bb [j];
2954 if (bb && bb->native_offset) {
2959 end_offset = tblock->native_offset + tblock->native_length;
2962 end_offset = cfg->epilog_begin;
2964 ei->data.handler_end = cfg->native_code + end_offset;
2969 if (G_UNLIKELY (cfg->verbose_level >= 4)) {
2971 for (i = 0; i < jinfo->num_clauses; i++) {
2972 MonoJitExceptionInfo *ei = &jinfo->clauses [i];
2973 int start = (guint8*)ei->try_start - cfg->native_code;
2974 int end = (guint8*)ei->try_end - cfg->native_code;
2975 int handler = (guint8*)ei->handler_start - cfg->native_code;
2976 int handler_end = (guint8*)ei->data.handler_end - cfg->native_code;
2978 printf ("JitInfo EH clause %d flags %x try %x-%x handler %x-%x\n", i, ei->flags, start, end, handler, handler_end);
2982 if (cfg->encoded_unwind_ops) {
2983 /* Generated by LLVM */
2984 jinfo->unwind_info = mono_cache_unwind_info (cfg->encoded_unwind_ops, cfg->encoded_unwind_ops_len);
2985 g_free (cfg->encoded_unwind_ops);
2986 } else if (cfg->unwind_ops) {
2988 guint8 *unwind_info = mono_unwind_ops_encode (cfg->unwind_ops, &info_len);
2989 guint32 unwind_desc;
2991 unwind_desc = mono_cache_unwind_info (unwind_info, info_len);
2993 if (cfg->has_unwind_info_for_epilog) {
2994 MonoArchEHJitInfo *info;
2996 info = mono_jit_info_get_arch_eh_info (jinfo);
2998 info->epilog_size = cfg->code_len - cfg->epilog_begin;
3000 jinfo->unwind_info = unwind_desc;
3001 g_free (unwind_info);
3003 jinfo->unwind_info = cfg->used_int_regs;
3009 /* Return whenever METHOD is a gsharedvt method */
3011 is_gsharedvt_method (MonoMethod *method)
3013 MonoGenericContext *context;
3014 MonoGenericInst *inst;
3017 if (!method->is_inflated)
3019 context = mono_method_get_context (method);
3020 inst = context->class_inst;
3022 for (i = 0; i < inst->type_argc; ++i)
3023 if (mini_is_gsharedvt_gparam (inst->type_argv [i]))
3026 inst = context->method_inst;
3028 for (i = 0; i < inst->type_argc; ++i)
3029 if (mini_is_gsharedvt_gparam (inst->type_argv [i]))
3036 is_open_method (MonoMethod *method)
3038 MonoGenericContext *context;
3040 if (!method->is_inflated)
3042 context = mono_method_get_context (method);
3043 if (context->class_inst && context->class_inst->is_open)
3045 if (context->method_inst && context->method_inst->is_open)
3050 #if defined(__native_client_codegen__) || USE_COOP_GC
3053 mono_create_gc_safepoint (MonoCompile *cfg, MonoBasicBlock *bblock)
3055 MonoInst *poll_addr, *ins;
3056 if (cfg->verbose_level > 1)
3057 printf ("ADDING SAFE POINT TO BB %d\n", bblock->block_num);
3059 #if defined(__native_client_codegen__)
3060 NEW_AOTCONST (cfg, poll_addr, MONO_PATCH_INFO_GC_SAFE_POINT_FLAG, (gpointer)&__nacl_thread_suspension_needed);
3062 NEW_AOTCONST (cfg, poll_addr, MONO_PATCH_INFO_GC_SAFE_POINT_FLAG, (gpointer)&mono_polling_required);
3065 MONO_INST_NEW (cfg, ins, OP_GC_SAFE_POINT);
3066 ins->sreg1 = poll_addr->dreg;
3068 if (bblock->flags & BB_EXCEPTION_HANDLER) {
3069 MonoInst *eh_op = bblock->code;
3071 if (eh_op && eh_op->opcode != OP_START_HANDLER && eh_op->opcode != OP_GET_EX_OBJ) {
3074 MonoInst *next_eh_op = eh_op ? eh_op->next : NULL;
3075 // skip all EH relateds ops
3076 while (next_eh_op && (next_eh_op->opcode == OP_START_HANDLER || next_eh_op->opcode == OP_GET_EX_OBJ)) {
3078 next_eh_op = eh_op->next;
3082 mono_bblock_insert_after_ins (bblock, eh_op, poll_addr);
3083 mono_bblock_insert_after_ins (bblock, poll_addr, ins);
3084 } else if (bblock == cfg->bb_entry) {
3085 mono_bblock_insert_after_ins (bblock, bblock->last_ins, poll_addr);
3086 mono_bblock_insert_after_ins (bblock, poll_addr, ins);
3089 mono_bblock_insert_before_ins (bblock, NULL, poll_addr);
3090 mono_bblock_insert_after_ins (bblock, poll_addr, ins);
3095 This code inserts safepoints into managed code at important code paths.
3098 -the first basic block
3099 -landing BB for exception handlers
3104 mono_insert_safepoints (MonoCompile *cfg)
3107 if (cfg->method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
3108 WrapperInfo *info = mono_marshal_get_wrapper_info (cfg->method);
3109 #if defined(__native_client__) || defined(__native_client_codegen__)
3110 gpointer poll_func = &mono_nacl_gc;
3111 #elif defined(USE_COOP_GC)
3112 gpointer poll_func = &mono_threads_state_poll;
3114 gpointer poll_func = NULL;
3117 if (info && info->subtype == WRAPPER_SUBTYPE_ICALL_WRAPPER && info->d.icall.func == poll_func) {
3118 if (cfg->verbose_level > 1)
3119 printf ("SKIPPING SAFEPOINTS for the polling function icall\n");
3124 if (cfg->method->wrapper_type == MONO_WRAPPER_NATIVE_TO_MANAGED) {
3125 if (cfg->verbose_level > 1)
3126 printf ("SKIPPING SAFEPOINTS for native-to-managed wrappers.\n");
3130 if (cfg->verbose_level > 1)
3131 printf ("INSERTING SAFEPOINTS\n");
3132 if (cfg->verbose_level > 2)
3133 mono_print_code (cfg, "BEFORE SAFEPOINTS");
3135 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
3136 if (bb->loop_body_start || bb == cfg->bb_entry || bb->flags & BB_EXCEPTION_HANDLER)
3137 mono_create_gc_safepoint (cfg, bb);
3140 if (cfg->verbose_level > 2)
3141 mono_print_code (cfg, "AFTER SAFEPOINTS");
3148 mono_insert_safepoints (MonoCompile *cfg)
3155 * mini_method_compile:
3156 * @method: the method to compile
3157 * @opts: the optimization flags to use
3158 * @domain: the domain where the method will be compiled in
3159 * @flags: compilation flags
3160 * @parts: debug flag
3162 * Returns: a MonoCompile* pointer. Caller must check the exception_type
3163 * field in the returned struct to see if compilation succeded.
3166 mini_method_compile (MonoMethod *method, guint32 opts, MonoDomain *domain, JitFlags flags, int parts, int aot_method_index)
3168 MonoMethodHeader *header;
3169 MonoMethodSignature *sig;
3172 int dfn, i, code_size_ratio;
3173 gboolean try_generic_shared, try_llvm = FALSE;
3174 MonoMethod *method_to_compile, *method_to_register;
3175 gboolean method_is_gshared = FALSE;
3176 gboolean run_cctors = (flags & JIT_FLAG_RUN_CCTORS) ? 1 : 0;
3177 gboolean compile_aot = (flags & JIT_FLAG_AOT) ? 1 : 0;
3178 gboolean full_aot = (flags & JIT_FLAG_FULL_AOT) ? 1 : 0;
3179 gboolean disable_direct_icalls = (flags & JIT_FLAG_NO_DIRECT_ICALLS) ? 1 : 0;
3180 gboolean gsharedvt_method = FALSE;
3182 gboolean llvm = (flags & JIT_FLAG_LLVM) ? 1 : 0;
3184 static gboolean verbose_method_inited;
3185 static const char *verbose_method_name;
3187 InterlockedIncrement (&mono_jit_stats.methods_compiled);
3188 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION)
3189 mono_profiler_method_jit (method);
3190 if (MONO_METHOD_COMPILE_BEGIN_ENABLED ())
3191 MONO_PROBE_METHOD_COMPILE_BEGIN (method);
3193 gsharedvt_method = is_gsharedvt_method (method);
3196 * In AOT mode, method can be the following:
3197 * - a gsharedvt method.
3198 * - a method inflated with type parameters. This is for ref/partial sharing.
3199 * - a method inflated with concrete types.
3202 if (is_open_method (method)) {
3203 try_generic_shared = TRUE;
3204 method_is_gshared = TRUE;
3206 try_generic_shared = FALSE;
3208 g_assert (opts & MONO_OPT_GSHARED);
3210 try_generic_shared = mono_class_generic_sharing_enabled (method->klass) &&
3211 (opts & MONO_OPT_GSHARED) && mono_method_is_generic_sharable (method, FALSE);
3212 if (mini_is_gsharedvt_sharable_method (method)) {
3213 if (!mono_debug_count ())
3214 try_generic_shared = FALSE;
3219 if (try_generic_shared && !mono_debug_count ())
3220 try_generic_shared = FALSE;
3223 if (opts & MONO_OPT_GSHARED) {
3224 if (try_generic_shared)
3225 mono_stats.generics_sharable_methods++;
3226 else if (mono_method_is_generic_impl (method))
3227 mono_stats.generics_unsharable_methods++;
3231 try_llvm = mono_use_llvm || llvm;
3235 if (method_is_gshared) {
3236 method_to_compile = method;
3238 if (try_generic_shared) {
3239 method_to_compile = mini_get_shared_method (method);
3240 g_assert (method_to_compile);
3242 method_to_compile = method;
3246 cfg = g_new0 (MonoCompile, 1);
3247 cfg->method = method_to_compile;
3248 cfg->header = mono_method_get_header (cfg->method);
3249 cfg->mempool = mono_mempool_new ();
3251 cfg->prof_options = mono_profiler_get_events ();
3252 cfg->run_cctors = run_cctors;
3253 cfg->domain = domain;
3254 cfg->verbose_level = mini_verbose;
3255 cfg->compile_aot = compile_aot;
3256 cfg->full_aot = full_aot;
3257 cfg->skip_visibility = method->skip_visibility;
3258 cfg->orig_method = method;
3259 cfg->gen_seq_points = debug_options.gen_seq_points_compact_data || debug_options.gen_sdb_seq_points;
3260 cfg->gen_sdb_seq_points = debug_options.gen_sdb_seq_points;
3262 #ifdef PLATFORM_ANDROID
3263 if (cfg->method->wrapper_type != MONO_WRAPPER_NONE) {
3264 /* FIXME: Why is this needed */
3265 cfg->gen_seq_points = FALSE;
3266 cfg->gen_sdb_seq_points = FALSE;
3269 /* coop / nacl requires loop detection to happen */
3270 #if defined(__native_client_codegen__) || defined(USE_COOP_GC)
3271 cfg->opt |= MONO_OPT_LOOP;
3274 cfg->explicit_null_checks = debug_options.explicit_null_checks;
3275 cfg->soft_breakpoints = debug_options.soft_breakpoints;
3276 cfg->check_pinvoke_callconv = debug_options.check_pinvoke_callconv;
3277 cfg->disable_direct_icalls = disable_direct_icalls;
3278 if (try_generic_shared)
3279 cfg->gshared = TRUE;
3280 cfg->compile_llvm = try_llvm;
3281 cfg->token_info_hash = g_hash_table_new (NULL, NULL);
3282 if (cfg->compile_aot)
3283 cfg->method_index = aot_method_index;
3285 if (!mono_debug_count ())
3286 cfg->opt &= ~MONO_OPT_FLOAT32;
3287 cfg->r4fp = (cfg->opt & MONO_OPT_FLOAT32) ? 1 : 0;
3288 cfg->r4_stack_type = cfg->r4fp ? STACK_R4 : STACK_R8;
3290 if (cfg->gen_seq_points)
3291 cfg->seq_points = g_ptr_array_new ();
3292 mono_error_init (&cfg->error);
3294 if (cfg->compile_aot && !try_generic_shared && (method->is_generic || method->klass->generic_container || method_is_gshared)) {
3295 cfg->exception_type = MONO_EXCEPTION_GENERIC_SHARING_FAILED;
3299 if (cfg->gshared && (gsharedvt_method || mini_is_gsharedvt_sharable_method (method))) {
3300 MonoMethodInflated *inflated;
3301 MonoGenericContext *context;
3303 if (gsharedvt_method) {
3304 g_assert (method->is_inflated);
3305 inflated = (MonoMethodInflated*)method;
3306 context = &inflated->context;
3308 /* We are compiling a gsharedvt method directly */
3309 g_assert (compile_aot);
3311 g_assert (method_to_compile->is_inflated);
3312 inflated = (MonoMethodInflated*)method_to_compile;
3313 context = &inflated->context;
3316 mini_init_gsctx (NULL, cfg->mempool, context, &cfg->gsctx);
3317 cfg->gsctx_context = context;
3319 cfg->gsharedvt = TRUE;
3321 cfg->disable_llvm = TRUE;
3322 cfg->exception_message = g_strdup ("gsharedvt");
3326 method_to_register = method_to_compile;
3328 g_assert (method == method_to_compile);
3329 method_to_register = method;
3331 cfg->method_to_register = method_to_register;
3333 mono_error_init (&err);
3334 sig = mono_method_signature_checked (cfg->method, &err);
3336 cfg->exception_type = MONO_EXCEPTION_TYPE_LOAD;
3337 cfg->exception_message = g_strdup (mono_error_get_message (&err));
3338 mono_error_cleanup (&err);
3339 if (MONO_METHOD_COMPILE_END_ENABLED ())
3340 MONO_PROBE_METHOD_COMPILE_END (method, FALSE);
3344 header = cfg->header;
3346 MonoLoaderError *error;
3348 if ((error = mono_loader_get_last_error ())) {
3349 cfg->exception_type = error->exception_type;
3351 cfg->exception_type = MONO_EXCEPTION_INVALID_PROGRAM;
3352 cfg->exception_message = g_strdup_printf ("Missing or incorrect header for method %s", cfg->method->name);
3354 if (MONO_METHOD_COMPILE_END_ENABLED ())
3355 MONO_PROBE_METHOD_COMPILE_END (method, FALSE);
3361 static gboolean inited;
3367 * Check for methods which cannot be compiled by LLVM early, to avoid
3368 * the extra compilation pass.
3370 if (COMPILE_LLVM (cfg)) {
3371 mono_llvm_check_method_supported (cfg);
3372 if (cfg->disable_llvm) {
3373 if (cfg->verbose_level >= 1) {
3374 //nm = mono_method_full_name (cfg->method, TRUE);
3375 printf ("LLVM failed for '%s': %s\n", method->name, cfg->exception_message);
3378 mono_destroy_compile (cfg);
3380 goto restart_compile;
3386 /* The debugger has no liveness information, so avoid sharing registers/stack slots */
3387 if (debug_options.mdb_optimizations) {
3388 cfg->disable_reuse_registers = TRUE;
3389 cfg->disable_reuse_stack_slots = TRUE;
3391 * This decreases the change the debugger will read registers/stack slots which are
3392 * not yet initialized.
3394 cfg->disable_initlocals_opt = TRUE;
3396 cfg->extend_live_ranges = TRUE;
3398 /* Temporarily disable this when running in the debugger until we have support
3399 * for this in the debugger. */
3400 /* This is no longer needed with sdb */
3401 //cfg->disable_omit_fp = TRUE;
3403 /* The debugger needs all locals to be on the stack or in a global register */
3404 cfg->disable_vreg_to_lvreg = TRUE;
3406 /* Don't remove unused variables when running inside the debugger since the user
3407 * may still want to view them. */
3408 cfg->disable_deadce_vars = TRUE;
3410 // cfg->opt |= MONO_OPT_SHARED;
3411 cfg->opt &= ~MONO_OPT_DEADCE;
3412 cfg->opt &= ~MONO_OPT_INLINE;
3413 cfg->opt &= ~MONO_OPT_COPYPROP;
3414 cfg->opt &= ~MONO_OPT_CONSPROP;
3415 /* This is no longer needed with sdb */
3416 //cfg->opt &= ~MONO_OPT_GSHARED;
3418 /* This is needed for the soft debugger, which doesn't like code after the epilog */
3419 cfg->disable_out_of_line_bblocks = TRUE;
3422 if (mono_using_xdebug) {
3424 * Make each variable use its own register/stack slot and extend
3425 * their liveness to cover the whole method, making them displayable
3426 * in gdb even after they are dead.
3428 cfg->disable_reuse_registers = TRUE;
3429 cfg->disable_reuse_stack_slots = TRUE;
3430 cfg->extend_live_ranges = TRUE;
3431 cfg->compute_precise_live_ranges = TRUE;
3434 mini_gc_init_cfg (cfg);
3436 if (COMPILE_LLVM (cfg)) {
3437 cfg->opt |= MONO_OPT_ABCREM;
3440 if (!verbose_method_inited) {
3441 verbose_method_name = g_getenv ("MONO_VERBOSE_METHOD");
3442 verbose_method_inited = TRUE;
3444 if (verbose_method_name) {
3445 const char *name = verbose_method_name;
3447 if ((strchr (name, '.') > name) || strchr (name, ':')) {
3448 MonoMethodDesc *desc;
3450 desc = mono_method_desc_new (name, TRUE);
3451 if (mono_method_desc_full_match (desc, cfg->method)) {
3452 cfg->verbose_level = 4;
3454 mono_method_desc_free (desc);
3456 if (strcmp (cfg->method->name, name) == 0)
3457 cfg->verbose_level = 4;
3461 cfg->intvars = mono_mempool_alloc0 (cfg->mempool, sizeof (guint16) * STACK_MAX * header->max_stack);
3463 if (cfg->verbose_level > 0) {
3466 method_name = mono_method_full_name (method, TRUE);
3467 g_print ("converting %s%s%smethod %s\n", COMPILE_LLVM (cfg) ? "llvm " : "", cfg->gsharedvt ? "gsharedvt " : "", (cfg->gshared && !cfg->gsharedvt) ? "gshared " : "", method_name);
3469 if (COMPILE_LLVM (cfg))
3470 g_print ("converting llvm method %s\n", method_name = mono_method_full_name (method, TRUE));
3471 else if (cfg->gsharedvt)
3472 g_print ("converting gsharedvt method %s\n", method_name = mono_method_full_name (method_to_compile, TRUE));
3473 else if (cfg->gshared)
3474 g_print ("converting shared method %s\n", method_name = mono_method_full_name (method_to_compile, TRUE));
3476 g_print ("converting method %s\n", method_name = mono_method_full_name (method, TRUE));
3478 g_free (method_name);
3481 if (cfg->opt & MONO_OPT_ABCREM)
3482 cfg->opt |= MONO_OPT_SSA;
3484 cfg->rs = mono_regstate_new ();
3485 cfg->next_vreg = cfg->rs->next_vreg;
3487 /* FIXME: Fix SSA to handle branches inside bblocks */
3488 if (cfg->opt & MONO_OPT_SSA)
3489 cfg->enable_extended_bblocks = FALSE;
3492 * FIXME: This confuses liveness analysis because variables which are assigned after
3493 * a branch inside a bblock become part of the kill set, even though the assignment
3494 * might not get executed. This causes the optimize_initlocals pass to delete some
3495 * assignments which are needed.
3496 * Also, the mono_if_conversion pass needs to be modified to recognize the code
3499 //cfg->enable_extended_bblocks = TRUE;
3501 /*We must verify the method before doing any IR generation as mono_compile_create_vars can assert.*/
3502 if (mono_compile_is_broken (cfg, cfg->method, TRUE)) {
3503 if (mini_get_debug_options ()->break_on_unverified)
3509 * create MonoInst* which represents arguments and local variables
3511 mono_compile_create_vars (cfg);
3513 i = mono_method_to_ir (cfg, method_to_compile, NULL, NULL, NULL, NULL, 0, FALSE);
3516 if (try_generic_shared && cfg->exception_type == MONO_EXCEPTION_GENERIC_SHARING_FAILED) {
3518 if (MONO_METHOD_COMPILE_END_ENABLED ())
3519 MONO_PROBE_METHOD_COMPILE_END (method, FALSE);
3522 mono_destroy_compile (cfg);
3523 try_generic_shared = FALSE;
3524 goto restart_compile;
3526 g_assert (cfg->exception_type != MONO_EXCEPTION_GENERIC_SHARING_FAILED);
3528 if (MONO_METHOD_COMPILE_END_ENABLED ())
3529 MONO_PROBE_METHOD_COMPILE_END (method, FALSE);
3530 /* cfg contains the details of the failure, so let the caller cleanup */
3534 cfg->stat_basic_blocks += cfg->num_bblocks;
3536 if (COMPILE_LLVM (cfg)) {
3539 /* The IR has to be in SSA form for LLVM */
3540 cfg->opt |= MONO_OPT_SSA;
3544 // Allow SSA on the result value
3545 cfg->ret->flags &= ~MONO_INST_VOLATILE;
3547 // Add an explicit return instruction referencing the return value
3548 MONO_INST_NEW (cfg, ins, OP_SETRET);
3549 ins->sreg1 = cfg->ret->dreg;
3551 MONO_ADD_INS (cfg->bb_exit, ins);
3554 cfg->opt &= ~MONO_OPT_LINEARS;
3557 cfg->opt &= ~MONO_OPT_BRANCH;
3560 /* todo: remove code when we have verified that the liveness for try/catch blocks
3564 * Currently, this can't be commented out since exception blocks are not
3565 * processed during liveness analysis.
3566 * It is also needed, because otherwise the local optimization passes would
3567 * delete assignments in cases like this:
3569 * <something which throws>
3571 * This also allows SSA to be run on methods containing exception clauses, since
3572 * SSA will ignore variables marked VOLATILE.
3574 mono_liveness_handle_exception_clauses (cfg);
3576 mono_handle_out_of_line_bblock (cfg);
3578 /*g_print ("numblocks = %d\n", cfg->num_bblocks);*/
3580 if (!COMPILE_LLVM (cfg))
3581 mono_decompose_long_opts (cfg);
3583 /* Should be done before branch opts */
3584 if (cfg->opt & (MONO_OPT_CONSPROP | MONO_OPT_COPYPROP))
3585 mono_local_cprop (cfg);
3587 if (cfg->opt & MONO_OPT_BRANCH)
3588 mono_optimize_branches (cfg);
3590 /* This must be done _before_ global reg alloc and _after_ decompose */
3591 mono_handle_global_vregs (cfg);
3592 if (cfg->opt & MONO_OPT_DEADCE)
3593 mono_local_deadce (cfg);
3594 if (cfg->opt & MONO_OPT_ALIAS_ANALYSIS)
3595 mono_local_alias_analysis (cfg);
3596 /* Disable this for LLVM to make the IR easier to handle */
3597 if (!COMPILE_LLVM (cfg))
3598 mono_if_conversion (cfg);
3600 MONO_SUSPEND_CHECK ();
3602 /* Depth-first ordering on basic blocks */
3603 cfg->bblocks = mono_mempool_alloc (cfg->mempool, sizeof (MonoBasicBlock*) * (cfg->num_bblocks + 1));
3605 cfg->max_block_num = cfg->num_bblocks;
3608 df_visit (cfg->bb_entry, &dfn, cfg->bblocks);
3609 if (cfg->num_bblocks != dfn + 1) {
3612 cfg->num_bblocks = dfn + 1;
3614 /* remove unreachable code, because the code in them may be
3615 * inconsistent (access to dead variables for example) */
3616 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
3617 bb->flags &= ~BB_VISITED;
3618 compute_reachable (cfg->bb_entry);
3619 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
3620 if (bb->flags & BB_EXCEPTION_HANDLER)
3621 compute_reachable (bb);
3622 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
3623 if (!(bb->flags & BB_VISITED)) {
3624 if (cfg->verbose_level > 1)
3625 g_print ("found unreachable code in BB%d\n", bb->block_num);
3626 bb->code = bb->last_ins = NULL;
3627 while (bb->out_count)
3628 mono_unlink_bblock (cfg, bb, bb->out_bb [0]);
3631 for (bb = cfg->bb_entry; bb; bb = bb->next_bb)
3632 bb->flags &= ~BB_VISITED;
3635 if (((cfg->num_varinfo > 2000) || (cfg->num_bblocks > 1000)) && !cfg->compile_aot) {
3637 * we disable some optimizations if there are too many variables
3638 * because JIT time may become too expensive. The actual number needs
3639 * to be tweaked and eventually the non-linear algorithms should be fixed.
3641 cfg->opt &= ~ (MONO_OPT_LINEARS | MONO_OPT_COPYPROP | MONO_OPT_CONSPROP);
3642 cfg->disable_ssa = TRUE;
3645 if (cfg->opt & MONO_OPT_LOOP) {
3646 mono_compile_dominator_info (cfg, MONO_COMP_DOM | MONO_COMP_IDOM);
3647 mono_compute_natural_loops (cfg);
3650 mono_insert_safepoints (cfg);
3652 /* after method_to_ir */
3654 if (MONO_METHOD_COMPILE_END_ENABLED ())
3655 MONO_PROBE_METHOD_COMPILE_END (method, TRUE);
3660 if (header->num_clauses)
3661 cfg->disable_ssa = TRUE;
3664 //#define DEBUGSSA "logic_run"
3665 //#define DEBUGSSA_CLASS "Tests"
3668 if (!cfg->disable_ssa) {
3669 mono_local_cprop (cfg);
3672 mono_ssa_compute (cfg);
3676 if (cfg->opt & MONO_OPT_SSA) {
3677 if (!(cfg->comp_done & MONO_COMP_SSA) && !cfg->disable_ssa) {
3679 mono_ssa_compute (cfg);
3682 if (cfg->verbose_level >= 2) {
3689 /* after SSA translation */
3691 if (MONO_METHOD_COMPILE_END_ENABLED ())
3692 MONO_PROBE_METHOD_COMPILE_END (method, TRUE);
3696 if ((cfg->opt & MONO_OPT_CONSPROP) || (cfg->opt & MONO_OPT_COPYPROP)) {
3697 if (cfg->comp_done & MONO_COMP_SSA && !COMPILE_LLVM (cfg)) {
3699 mono_ssa_cprop (cfg);
3705 if (cfg->comp_done & MONO_COMP_SSA && !COMPILE_LLVM (cfg)) {
3706 //mono_ssa_strength_reduction (cfg);
3708 if (cfg->opt & MONO_OPT_DEADCE)
3709 mono_ssa_deadce (cfg);
3711 if ((cfg->flags & (MONO_CFG_HAS_LDELEMA|MONO_CFG_HAS_CHECK_THIS)) && (cfg->opt & MONO_OPT_ABCREM))
3712 mono_perform_abc_removal (cfg);
3714 mono_ssa_remove (cfg);
3715 mono_local_cprop (cfg);
3716 mono_handle_global_vregs (cfg);
3717 if (cfg->opt & MONO_OPT_DEADCE)
3718 mono_local_deadce (cfg);
3720 if (cfg->opt & MONO_OPT_BRANCH)
3721 mono_optimize_branches (cfg);
3725 if (cfg->comp_done & MONO_COMP_SSA && COMPILE_LLVM (cfg)) {
3726 mono_ssa_loop_invariant_code_motion (cfg);
3727 /* This removes MONO_INST_FAULT flags too so perform it unconditionally */
3728 if (cfg->opt & MONO_OPT_ABCREM)
3729 mono_perform_abc_removal (cfg);
3732 /* after SSA removal */
3734 if (MONO_METHOD_COMPILE_END_ENABLED ())
3735 MONO_PROBE_METHOD_COMPILE_END (method, TRUE);
3739 #ifdef MONO_ARCH_SOFT_FLOAT_FALLBACK
3740 if (COMPILE_SOFT_FLOAT (cfg))
3741 mono_decompose_soft_float (cfg);
3743 if (COMPILE_LLVM (cfg))
3744 mono_decompose_vtype_opts_llvm (cfg);
3746 mono_decompose_vtype_opts (cfg);
3747 if (cfg->flags & MONO_CFG_HAS_ARRAY_ACCESS)
3748 mono_decompose_array_access_opts (cfg);
3751 #ifndef MONO_ARCH_GOT_REG
3756 g_assert (cfg->got_var_allocated);
3759 * Allways allocate the GOT var to a register, because keeping it
3760 * in memory will increase the number of live temporaries in some
3761 * code created by inssel.brg, leading to the well known spills+
3762 * branches problem. Testcase: mcs crash in
3763 * System.MonoCustomAttrs:GetCustomAttributes.
3765 #ifdef MONO_ARCH_GOT_REG
3766 got_reg = MONO_ARCH_GOT_REG;
3768 regs = mono_arch_get_global_int_regs (cfg);
3770 got_reg = GPOINTER_TO_INT (regs->data);
3773 cfg->got_var->opcode = OP_REGVAR;
3774 cfg->got_var->dreg = got_reg;
3775 cfg->used_int_regs |= 1LL << cfg->got_var->dreg;
3779 * Have to call this again to process variables added since the first call.
3781 mono_liveness_handle_exception_clauses (cfg);
3783 if (cfg->opt & MONO_OPT_LINEARS) {
3784 GList *vars, *regs, *l;
3786 /* fixme: maybe we can avoid to compute livenesss here if already computed ? */
3787 cfg->comp_done &= ~MONO_COMP_LIVENESS;
3788 if (!(cfg->comp_done & MONO_COMP_LIVENESS))
3789 mono_analyze_liveness (cfg);
3791 if ((vars = mono_arch_get_allocatable_int_vars (cfg))) {
3792 regs = mono_arch_get_global_int_regs (cfg);
3793 /* Remove the reg reserved for holding the GOT address */
3795 for (l = regs; l; l = l->next) {
3796 if (GPOINTER_TO_UINT (l->data) == cfg->got_var->dreg) {
3797 regs = g_list_delete_link (regs, l);
3802 mono_linear_scan (cfg, vars, regs, &cfg->used_int_regs);
3806 //mono_print_code (cfg, "");
3810 /* variables are allocated after decompose, since decompose could create temps */
3811 if (!COMPILE_LLVM (cfg)) {
3812 mono_arch_allocate_vars (cfg);
3813 if (cfg->exception_type)
3819 gboolean need_local_opts;
3821 if (!COMPILE_LLVM (cfg)) {
3822 mono_spill_global_vars (cfg, &need_local_opts);
3824 if (need_local_opts || cfg->compile_aot) {
3825 /* To optimize code created by spill_global_vars */
3826 mono_local_cprop (cfg);
3827 if (cfg->opt & MONO_OPT_DEADCE)
3828 mono_local_deadce (cfg);
3832 /* Add branches between non-consecutive bblocks */
3833 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
3834 if (bb->last_ins && MONO_IS_COND_BRANCH_OP (bb->last_ins) &&
3835 bb->last_ins->inst_false_bb && bb->next_bb != bb->last_ins->inst_false_bb) {
3836 /* we are careful when inverting, since bugs like #59580
3837 * could show up when dealing with NaNs.
3839 if (MONO_IS_COND_BRANCH_NOFP(bb->last_ins) && bb->next_bb == bb->last_ins->inst_true_bb) {
3840 MonoBasicBlock *tmp = bb->last_ins->inst_true_bb;
3841 bb->last_ins->inst_true_bb = bb->last_ins->inst_false_bb;
3842 bb->last_ins->inst_false_bb = tmp;
3844 bb->last_ins->opcode = mono_reverse_branch_op (bb->last_ins->opcode);
3846 MonoInst *inst = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst));
3847 inst->opcode = OP_BR;
3848 inst->inst_target_bb = bb->last_ins->inst_false_bb;
3849 mono_bblock_add_inst (bb, inst);
3854 if (cfg->verbose_level >= 4) {
3855 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
3856 MonoInst *tree = bb->code;
3857 g_print ("DUMP BLOCK %d:\n", bb->block_num);
3860 for (; tree; tree = tree->next) {
3861 mono_print_ins_index (-1, tree);
3867 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
3868 bb->max_vreg = cfg->next_vreg;
3872 if (COMPILE_LLVM (cfg)) {
3876 /* The IR has to be in SSA form for LLVM */
3877 if (!(cfg->comp_done & MONO_COMP_SSA)) {
3878 cfg->exception_message = g_strdup ("SSA disabled.");
3879 cfg->disable_llvm = TRUE;
3882 if (cfg->flags & MONO_CFG_HAS_ARRAY_ACCESS)
3883 mono_decompose_array_access_opts (cfg);
3885 if (!cfg->disable_llvm)
3886 mono_llvm_emit_method (cfg);
3887 if (cfg->disable_llvm) {
3888 if (cfg->verbose_level >= 1) {
3889 //nm = mono_method_full_name (cfg->method, TRUE);
3890 printf ("LLVM failed for '%s': %s\n", method->name, cfg->exception_message);
3893 mono_destroy_compile (cfg);
3895 goto restart_compile;
3898 if (cfg->verbose_level > 0 && !cfg->compile_aot) {
3899 nm = mono_method_full_name (cfg->method, TRUE);
3900 g_print ("LLVM Method %s emitted at %p to %p (code length %d) [%s]\n",
3902 cfg->native_code, cfg->native_code + cfg->code_len, cfg->code_len, cfg->domain->friendly_name);
3910 if (COMPILE_LLVM (cfg))
3911 InterlockedIncrement (&mono_jit_stats.methods_with_llvm);
3913 InterlockedIncrement (&mono_jit_stats.methods_without_llvm);
3915 cfg->jit_info = create_jit_info (cfg, method_to_compile);
3917 #ifdef MONO_ARCH_HAVE_LIVERANGE_OPS
3918 if (cfg->extend_live_ranges) {
3919 /* Extend live ranges to cover the whole method */
3920 for (i = 0; i < cfg->num_varinfo; ++i)
3921 MONO_VARINFO (cfg, i)->live_range_end = cfg->code_len;
3925 if (!cfg->compile_aot)
3926 mono_save_xdebug_info (cfg);
3928 mini_gc_create_gc_map (cfg);
3930 mono_save_seq_point_info (cfg);
3932 if (cfg->verbose_level >= 2) {
3933 char *id = mono_method_full_name (cfg->method, FALSE);
3934 mono_disassemble_code (cfg, cfg->native_code, cfg->code_len, id + 3);
3938 if (!cfg->compile_aot) {
3939 mono_domain_lock (cfg->domain);
3940 mono_jit_info_table_add (cfg->domain, cfg->jit_info);
3942 if (cfg->method->dynamic)
3943 mono_dynamic_code_hash_lookup (cfg->domain, cfg->method)->ji = cfg->jit_info;
3944 mono_domain_unlock (cfg->domain);
3949 printf ("GSHAREDVT: %s\n", mono_method_full_name (cfg->method, TRUE));
3952 /* collect statistics */
3953 #ifndef DISABLE_PERFCOUNTERS
3954 mono_perfcounters->jit_methods++;
3955 mono_perfcounters->jit_bytes += header->code_size;
3957 mono_jit_stats.allocated_code_size += cfg->code_len;
3958 code_size_ratio = cfg->code_len;
3959 if (code_size_ratio > mono_jit_stats.biggest_method_size && mono_jit_stats.enabled) {
3960 mono_jit_stats.biggest_method_size = code_size_ratio;
3961 g_free (mono_jit_stats.biggest_method);
3962 mono_jit_stats.biggest_method = g_strdup_printf ("%s::%s)", method->klass->name, method->name);
3964 code_size_ratio = (code_size_ratio * 100) / header->code_size;
3965 if (code_size_ratio > mono_jit_stats.max_code_size_ratio && mono_jit_stats.enabled) {
3966 mono_jit_stats.max_code_size_ratio = code_size_ratio;
3967 g_free (mono_jit_stats.max_ratio_method);
3968 mono_jit_stats.max_ratio_method = g_strdup_printf ("%s::%s)", method->klass->name, method->name);
3970 mono_jit_stats.native_code_size += cfg->code_len;
3972 if (MONO_METHOD_COMPILE_END_ENABLED ())
3973 MONO_PROBE_METHOD_COMPILE_END (method, TRUE);
3979 mono_arch_instrument_epilog (MonoCompile *cfg, void *func, void *p, gboolean enable_arguments)
3981 return mono_arch_instrument_epilog_full (cfg, func, p, enable_arguments, FALSE);
3985 mono_cfg_add_try_hole (MonoCompile *cfg, MonoExceptionClause *clause, guint8 *start, MonoBasicBlock *bb)
3987 TryBlockHole *hole = mono_mempool_alloc (cfg->mempool, sizeof (TryBlockHole));
3988 hole->clause = clause;
3989 hole->start_offset = start - cfg->native_code;
3990 hole->basic_block = bb;
3992 cfg->try_block_holes = g_slist_append_mempool (cfg->mempool, cfg->try_block_holes, hole);
3996 mono_cfg_set_exception (MonoCompile *cfg, int type)
3998 cfg->exception_type = type;
4001 #endif /* DISABLE_JIT */
4004 create_jit_info_for_trampoline (MonoMethod *wrapper, MonoTrampInfo *info)
4006 MonoDomain *domain = mono_get_root_domain ();
4011 if (info->uw_info) {
4012 uw_info = info->uw_info;
4013 info_len = info->uw_info_len;
4015 uw_info = mono_unwind_ops_encode (info->unwind_ops, &info_len);
4018 jinfo = mono_domain_alloc0 (domain, MONO_SIZEOF_JIT_INFO);
4019 jinfo->d.method = wrapper;
4020 jinfo->code_start = info->code;
4021 jinfo->code_size = info->code_size;
4022 jinfo->unwind_info = mono_cache_unwind_info (uw_info, info_len);
4031 * mono_jit_compile_method_inner:
4033 * Main entry point for the JIT.
4036 mono_jit_compile_method_inner (MonoMethod *method, MonoDomain *target_domain, int opt, MonoException **jit_ex)
4039 gpointer code = NULL;
4040 MonoJitInfo *jinfo, *info;
4042 MonoException *ex = NULL;
4043 guint32 prof_options;
4045 MonoMethod *prof_method, *shared;
4047 if ((method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) ||
4048 (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL)) {
4050 MonoMethodPInvoke* piinfo = (MonoMethodPInvoke *) method;
4052 if (!piinfo->addr) {
4053 if (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
4054 piinfo->addr = mono_lookup_internal_call (method);
4055 else if (method->iflags & METHOD_IMPL_ATTRIBUTE_NATIVE)
4057 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);
4059 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);
4062 mono_lookup_pinvoke_call (method, NULL, NULL);
4064 nm = mono_marshal_get_native_wrapper (method, TRUE, mono_aot_only);
4065 code = mono_get_addr_from_ftnptr (mono_compile_method (nm));
4066 jinfo = mono_jit_info_table_find (target_domain, code);
4068 jinfo = mono_jit_info_table_find (mono_domain_get (), code);
4070 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
4072 } else if ((method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME)) {
4073 const char *name = method->name;
4074 char *full_name, *msg;
4077 if (method->klass->parent == mono_defaults.multicastdelegate_class) {
4078 if (*name == '.' && (strcmp (name, ".ctor") == 0)) {
4079 MonoJitICallInfo *mi = mono_find_jit_icall_by_name ("mono_delegate_ctor");
4082 * We need to make sure this wrapper
4083 * is compiled because it might end up
4084 * in an (M)RGCTX if generic sharing
4085 * is enabled, and would be called
4086 * indirectly. If it were a
4087 * trampoline we'd try to patch that
4088 * indirect call, which is not
4091 return mono_get_addr_from_ftnptr ((gpointer)mono_icall_get_wrapper_full (mi, TRUE));
4092 } else if (*name == 'I' && (strcmp (name, "Invoke") == 0)) {
4093 return mono_create_delegate_trampoline (target_domain, method->klass);
4094 } else if (*name == 'B' && (strcmp (name, "BeginInvoke") == 0)) {
4095 nm = mono_marshal_get_delegate_begin_invoke (method);
4096 return mono_get_addr_from_ftnptr (mono_compile_method (nm));
4097 } else if (*name == 'E' && (strcmp (name, "EndInvoke") == 0)) {
4098 nm = mono_marshal_get_delegate_end_invoke (method);
4099 return mono_get_addr_from_ftnptr (mono_compile_method (nm));
4103 full_name = mono_method_full_name (method, TRUE);
4104 msg = g_strdup_printf ("Unrecognizable runtime implemented method '%s'", full_name);
4105 *jit_ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "InvalidProgramException", msg);
4111 if (method->wrapper_type == MONO_WRAPPER_UNKNOWN) {
4112 WrapperInfo *info = mono_marshal_get_wrapper_info (method);
4114 if (info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN || info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_OUT) {
4115 static MonoTrampInfo *in_tinfo, *out_tinfo;
4116 MonoTrampInfo *tinfo;
4118 gboolean is_in = info->subtype == WRAPPER_SUBTYPE_GSHAREDVT_IN;
4120 if (is_in && in_tinfo)
4121 return in_tinfo->code;
4122 else if (!is_in && out_tinfo)
4123 return out_tinfo->code;
4126 * This is a special wrapper whose body is implemented in assembly, like a trampoline. We use a wrapper so EH
4128 * FIXME: The caller signature doesn't match the callee, which might cause problems on some platforms
4131 mono_aot_get_trampoline_full (is_in ? "gsharedvt_trampoline" : "gsharedvt_out_trampoline", &tinfo);
4133 mono_arch_get_gsharedvt_trampoline (&tinfo, FALSE);
4134 jinfo = create_jit_info_for_trampoline (method, tinfo);
4135 mono_jit_info_table_add (mono_get_root_domain (), jinfo);
4144 if (mono_aot_only) {
4145 char *fullname = mono_method_full_name (method, TRUE);
4146 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);
4148 *jit_ex = mono_get_exception_execution_engine (msg);
4155 jit_timer = g_timer_new ();
4157 cfg = mini_method_compile (method, opt, target_domain, JIT_FLAG_RUN_CCTORS, 0, -1);
4158 prof_method = cfg->method;
4160 g_timer_stop (jit_timer);
4161 mono_jit_stats.jit_time += g_timer_elapsed (jit_timer, NULL);
4162 g_timer_destroy (jit_timer);
4164 switch (cfg->exception_type) {
4165 case MONO_EXCEPTION_NONE:
4167 case MONO_EXCEPTION_TYPE_LOAD:
4168 case MONO_EXCEPTION_MISSING_FIELD:
4169 case MONO_EXCEPTION_MISSING_METHOD:
4170 case MONO_EXCEPTION_FILE_NOT_FOUND:
4171 case MONO_EXCEPTION_BAD_IMAGE: {
4172 /* Throw a type load exception if needed */
4173 MonoLoaderError *error = mono_loader_get_last_error ();
4176 ex = mono_loader_error_prepare_exception (error);
4178 if (cfg->exception_ptr) {
4179 ex = mono_class_get_exception_for_failure (cfg->exception_ptr);
4181 if (cfg->exception_type == MONO_EXCEPTION_MISSING_FIELD)
4182 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "MissingFieldException", cfg->exception_message);
4183 else if (cfg->exception_type == MONO_EXCEPTION_MISSING_METHOD)
4184 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "MissingMethodException", cfg->exception_message);
4185 else if (cfg->exception_type == MONO_EXCEPTION_TYPE_LOAD)
4186 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "TypeLoadException", cfg->exception_message);
4187 else if (cfg->exception_type == MONO_EXCEPTION_FILE_NOT_FOUND)
4188 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System.IO", "FileNotFoundException", cfg->exception_message);
4189 else if (cfg->exception_type == MONO_EXCEPTION_BAD_IMAGE)
4190 ex = mono_get_exception_bad_image_format (cfg->exception_message);
4192 g_assert_not_reached ();
4197 case MONO_EXCEPTION_INVALID_PROGRAM:
4198 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "InvalidProgramException", cfg->exception_message);
4200 case MONO_EXCEPTION_UNVERIFIABLE_IL:
4201 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System.Security", "VerificationException", cfg->exception_message);
4203 case MONO_EXCEPTION_METHOD_ACCESS:
4204 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "MethodAccessException", cfg->exception_message);
4206 case MONO_EXCEPTION_FIELD_ACCESS:
4207 ex = mono_exception_from_name_msg (mono_defaults.corlib, "System", "FieldAccessException", cfg->exception_message);
4209 case MONO_EXCEPTION_OBJECT_SUPPLIED: {
4210 MonoException *exp = cfg->exception_ptr;
4211 MONO_GC_UNREGISTER_ROOT (cfg->exception_ptr);
4216 case MONO_EXCEPTION_OUT_OF_MEMORY:
4217 ex = mono_domain_get ()->out_of_memory_ex;
4219 case MONO_EXCEPTION_MONO_ERROR:
4220 g_assert (!mono_error_ok (&cfg->error));
4221 ex = mono_error_convert_to_exception (&cfg->error);
4224 g_assert_not_reached ();
4228 if (cfg->prof_options & MONO_PROFILE_JIT_COMPILATION)
4229 mono_profiler_method_end_jit (method, NULL, MONO_PROFILE_FAILED);
4231 mono_destroy_compile (cfg);
4237 if (mono_method_is_generic_sharable (method, FALSE))
4238 shared = mini_get_shared_method (method);
4242 mono_domain_lock (target_domain);
4244 /* Check if some other thread already did the job. In this case, we can
4245 discard the code this thread generated. */
4247 info = mini_lookup_method (target_domain, method, shared);
4249 /* We can't use a domain specific method in another domain */
4250 if ((target_domain == mono_domain_get ()) || info->domain_neutral) {
4251 code = info->code_start;
4252 // printf("Discarding code for method %s\n", method->name);
4256 /* The lookup + insert is atomic since this is done inside the domain lock */
4257 mono_domain_jit_code_hash_lock (target_domain);
4258 mono_internal_hash_table_insert (&target_domain->jit_code_hash, cfg->jit_info->d.method, cfg->jit_info);
4259 mono_domain_jit_code_hash_unlock (target_domain);
4261 code = cfg->native_code;
4263 if (cfg->gshared && mono_method_is_generic_sharable (method, FALSE))
4264 mono_stats.generics_shared_methods++;
4266 mono_stats.gsharedvt_methods++;
4269 jinfo = cfg->jit_info;
4271 prof_options = cfg->prof_options;
4274 * Update global stats while holding a lock, instead of doing many
4275 * InterlockedIncrement operations during JITting.
4277 mono_jit_stats.allocate_var += cfg->stat_allocate_var;
4278 mono_jit_stats.locals_stack_size += cfg->stat_locals_stack_size;
4279 mono_jit_stats.basic_blocks += cfg->stat_basic_blocks;
4280 mono_jit_stats.max_basic_blocks = MAX (cfg->stat_basic_blocks, mono_jit_stats.max_basic_blocks);
4281 mono_jit_stats.cil_code_size += cfg->stat_cil_code_size;
4282 mono_jit_stats.regvars += cfg->stat_n_regvars;
4283 mono_jit_stats.inlineable_methods += cfg->stat_inlineable_methods;
4284 mono_jit_stats.inlined_methods += cfg->stat_inlined_methods;
4285 mono_jit_stats.code_reallocs += cfg->stat_code_reallocs;
4287 mono_destroy_compile (cfg);
4290 if (domain_jit_info (target_domain)->jump_target_hash) {
4291 MonoJumpInfo patch_info;
4292 MonoJumpList *jlist;
4294 jlist = g_hash_table_lookup (domain_jit_info (target_domain)->jump_target_hash, method);
4296 patch_info.next = NULL;
4297 patch_info.ip.i = 0;
4298 patch_info.type = MONO_PATCH_INFO_METHOD_JUMP;
4299 patch_info.data.method = method;
4300 g_hash_table_remove (domain_jit_info (target_domain)->jump_target_hash, method);
4302 #if defined(__native_client_codegen__) && defined(__native_client__)
4303 /* These patches are applied after a method has been installed, no target munging is needed. */
4304 nacl_allow_target_modification (FALSE);
4306 #ifdef MONO_ARCH_HAVE_PATCH_CODE_NEW
4307 for (tmp = jlist->list; tmp; tmp = tmp->next) {
4308 gpointer target = mono_resolve_patch_target (NULL, target_domain, tmp->data, &patch_info, TRUE);
4309 mono_arch_patch_code_new (NULL, target_domain, tmp->data, &patch_info, target);
4312 for (tmp = jlist->list; tmp; tmp = tmp->next)
4313 mono_arch_patch_code (NULL, NULL, target_domain, tmp->data, &patch_info, TRUE);
4315 #if defined(__native_client_codegen__) && defined(__native_client__)
4316 nacl_allow_target_modification (TRUE);
4321 mono_emit_jit_map (jinfo);
4323 mono_domain_unlock (target_domain);
4325 vtable = mono_class_vtable (target_domain, method->klass);
4327 ex = mono_class_get_exception_for_failure (method->klass);
4333 if (prof_options & MONO_PROFILE_JIT_COMPILATION) {
4334 if (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) {
4335 if (mono_marshal_method_from_wrapper (method)) {
4336 /* Native func wrappers have no method */
4337 /* The profiler doesn't know about wrappers, so pass the original icall method */
4338 mono_profiler_method_end_jit (mono_marshal_method_from_wrapper (method), jinfo, MONO_PROFILE_OK);
4341 mono_profiler_method_end_jit (method, jinfo, MONO_PROFILE_OK);
4342 if (prof_method != method) {
4343 mono_profiler_method_end_jit (prof_method, jinfo, MONO_PROFILE_OK);
4347 ex = mono_runtime_class_init_full (vtable, FALSE);
4355 /* Dummy versions of some arch specific functions to avoid ifdefs at call sites */
4357 #ifndef MONO_ARCH_GSHAREDVT_SUPPORTED
4360 mono_arch_gsharedvt_sig_supported (MonoMethodSignature *sig)
4366 mono_arch_get_gsharedvt_call_info (gpointer addr, MonoMethodSignature *normal_sig, MonoMethodSignature *gsharedvt_sig, gboolean gsharedvt_in, gint32 vcall_offset, gboolean calli)
4368 g_assert_not_reached ();
4373 mono_arch_get_gsharedvt_arg_trampoline (MonoDomain *domain, gpointer arg, gpointer addr)
4375 g_assert_not_reached ();
4380 mono_arch_get_gsharedvt_trampoline (MonoTrampInfo **info, gboolean aot)
4382 g_assert_not_reached ();
4388 #if defined(MONO_ARCH_GSHAREDVT_SUPPORTED) && !defined(ENABLE_GSHAREDVT)
4391 mono_arch_gsharedvt_sig_supported (MonoMethodSignature *sig)
4397 mono_arch_get_gsharedvt_call_info (gpointer addr, MonoMethodSignature *normal_sig, MonoMethodSignature *gsharedvt_sig, gboolean gsharedvt_in, gint32 vcall_offset, gboolean calli)
4407 mono_llvm_emit_aot_file_info (MonoAotFileInfo *info, gboolean has_jitted_code)
4409 g_assert_not_reached ();
4412 void mono_llvm_emit_aot_data (const char *symbol, guint8 *data, int data_len)
4414 g_assert_not_reached ();
4419 * mini_get_underlying_type:
4421 * Return the type the JIT will use during compilation.
4422 * Handles: byref, enums, native types, generic sharing.
4423 * For gsharedvt types, it will return the original VAR/MVAR.
4426 mini_get_underlying_type (MonoType *type)
4428 return mini_type_get_underlying_type (type);
4432 mini_jit_init (void)
4434 mono_mutex_init_recursive (&jit_mutex);
4438 mini_jit_cleanup (void)
4441 g_free (emul_opcode_map);
4442 g_free (emul_opcode_opcodes);
4449 mini_method_compile (MonoMethod *method, guint32 opts, MonoDomain *domain, JitFlags flags, int parts, int aot_method_index)
4451 g_assert_not_reached ();
4456 mono_destroy_compile (MonoCompile *cfg)
4458 g_assert_not_reached ();
4462 mono_add_patch_info (MonoCompile *cfg, int ip, MonoJumpInfoType type, gconstpointer target)
4464 g_assert_not_reached ();
4467 #endif /* DISABLE_JIT */