| blob | f4f9ed33892d9572b0b05d6f054b90eb7f7356ab |
1 /*
2 * method-to-ir.c: Convert CIL to the JIT internal representation
3 *
4 * Author:
5 * Paolo Molaro (lupus@ximian.com)
6 * Dietmar Maurer (dietmar@ximian.com)
7 *
8 * (C) 2002 Ximian, Inc.
9 */
11 #include <config.h>
12 #include <signal.h>
14 #ifdef HAVE_UNISTD_H
15 #include <unistd.h>
16 #endif
18 #include <math.h>
19 #include <string.h>
20 #include <ctype.h>
22 #ifdef HAVE_SYS_TIME_H
23 #include <sys/time.h>
24 #endif
26 #ifdef HAVE_ALLOCA_H
27 #include <alloca.h>
28 #endif
30 #include <mono/utils/memcheck.h>
32 #include <mono/metadata/assembly.h>
33 #include <mono/metadata/attrdefs.h>
34 #include <mono/metadata/loader.h>
35 #include <mono/metadata/tabledefs.h>
36 #include <mono/metadata/class.h>
37 #include <mono/metadata/object.h>
38 #include <mono/metadata/exception.h>
39 #include <mono/metadata/opcodes.h>
40 #include <mono/metadata/mono-endian.h>
41 #include <mono/metadata/tokentype.h>
42 #include <mono/metadata/tabledefs.h>
43 #include <mono/metadata/marshal.h>
44 #include <mono/metadata/debug-helpers.h>
45 #include <mono/metadata/mono-debug.h>
46 #include <mono/metadata/gc-internal.h>
47 #include <mono/metadata/security-manager.h>
48 #include <mono/metadata/threads-types.h>
49 #include <mono/metadata/security-core-clr.h>
50 #include <mono/metadata/monitor.h>
51 #include <mono/metadata/profiler-private.h>
52 #include <mono/metadata/profiler.h>
53 #include <mono/utils/mono-compiler.h>
54 #include <mono/metadata/mono-basic-block.h>
65 #define BRANCH_COST 10
66 #define INLINE_LENGTH_LIMIT 20
67 #define INLINE_FAILURE do {\
68 if ((cfg->method != method) && (method->wrapper_type == MONO_WRAPPER_NONE))\
69 goto inline_failure;\
70 } while (0)
71 #define CHECK_CFG_EXCEPTION do {\
72 if (cfg->exception_type != MONO_EXCEPTION_NONE)\
73 goto exception_exit;\
74 } while (0)
75 #define METHOD_ACCESS_FAILURE do { \
76 char *method_fname = mono_method_full_name (method, TRUE); \
77 char *cil_method_fname = mono_method_full_name (cil_method, TRUE); \
78 mono_cfg_set_exception (cfg, MONO_EXCEPTION_METHOD_ACCESS); \
79 cfg->exception_message = g_strdup_printf ("Method `%s' is inaccessible from method `%s'\n", cil_method_fname, method_fname); \
80 g_free (method_fname); \
81 g_free (cil_method_fname); \
82 goto exception_exit; \
83 } while (0)
84 #define FIELD_ACCESS_FAILURE do { \
85 char *method_fname = mono_method_full_name (method, TRUE); \
86 char *field_fname = mono_field_full_name (field); \
87 mono_cfg_set_exception (cfg, MONO_EXCEPTION_FIELD_ACCESS); \
88 cfg->exception_message = g_strdup_printf ("Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname); \
89 g_free (method_fname); \
90 g_free (field_fname); \
91 goto exception_exit; \
92 } while (0)
93 #define GENERIC_SHARING_FAILURE(opcode) do { \
94 if (cfg->generic_sharing_context) { \
95 if (cfg->verbose_level > 2) \
96 printf ("sharing failed for method %s.%s.%s/%d opcode %s line %d\n", method->klass->name_space, method->klass->name, method->name, method->signature->param_count, mono_opcode_name ((opcode)), __LINE__); \
97 mono_cfg_set_exception (cfg, MONO_EXCEPTION_GENERIC_SHARING_FAILED); \
98 goto exception_exit; \
99 } \
100 } while (0)
101 #define OUT_OF_MEMORY_FAILURE do { \
102 mono_cfg_set_exception (cfg, MONO_EXCEPTION_OUT_OF_MEMORY); \
103 goto exception_exit; \
104 } while (0)
105 /* Determine whenever 'ins' represents a load of the 'this' argument */
106 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
114 MonoInst* mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig, MonoInst **args);
115 void mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native);
118 /* helper methods signatures */
127 /*
128 * Instruction metadata
129 */
130 #ifdef MINI_OP
131 #undef MINI_OP
132 #endif
133 #ifdef MINI_OP3
134 #undef MINI_OP3
135 #endif
137 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
143 #if SIZEOF_REGISTER == 8
144 #define LREG IREG
145 #else
147 #endif
148 /* keep in sync with the enum in mini.h */
149 const char
150 ins_info[] = {
152 };
153 #undef MINI_OP
154 #undef MINI_OP3
156 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
157 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
158 /*
159 * This should contain the index of the last sreg + 1. This is not the same
160 * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
161 */
164 };
165 #undef MINI_OP
166 #undef MINI_OP3
168 #define MONO_INIT_VARINFO(vi,id) do { \
169 (vi)->range.first_use.pos.bid = 0xffff; \
170 (vi)->reg = -1; \
171 (vi)->idx = (id); \
172 } while (0)
174 void
176 {
180 }
182 guint32
184 {
186 }
188 guint32
190 {
192 }
194 guint32
196 {
198 }
200 guint32
202 {
204 }
206 /*
207 * mono_alloc_ireg_ref:
208 *
209 * Allocate an IREG, and mark it as holding a GC ref.
210 */
211 guint32
213 {
215 }
217 /*
218 * mono_alloc_ireg_mp:
219 *
220 * Allocate an IREG, and mark it as holding a managed pointer.
221 */
222 guint32
224 {
226 }
228 /*
229 * mono_alloc_ireg_copy:
230 *
231 * Allocate an IREG with the same GC type as VREG.
232 */
233 guint32
235 {
240 else
242 }
244 guint
246 {
250 handle_enum:
276 #if SIZEOF_REGISTER == 8
278 #else
280 #endif
289 }
304 }
306 }
308 void
310 {
323 }
325 void
327 {
335 }
337 /*
338 * Can't put this at the beginning, since other files reference stuff from this
339 * file.
340 */
341 #ifndef DISABLE_JIT
343 #define UNVERIFIED do { if (mini_get_debug_options ()->break_on_unverified) G_BREAKPOINT (); else goto unverified; } while (0)
345 #define LOAD_ERROR do { if (mini_get_debug_options ()->break_on_unverified) G_BREAKPOINT (); else goto load_error; } while (0)
347 #define GET_BBLOCK(cfg,tblock,ip) do { \
348 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
349 if (!(tblock)) { \
350 if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
351 NEW_BBLOCK (cfg, (tblock)); \
352 (tblock)->cil_code = (ip); \
353 ADD_BBLOCK (cfg, (tblock)); \
354 } \
355 } while (0)
357 #if defined(TARGET_X86) || defined(TARGET_AMD64)
358 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
359 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
360 (dest)->dreg = alloc_ireg_mp ((cfg)); \
361 (dest)->sreg1 = (sr1); \
362 (dest)->sreg2 = (sr2); \
363 (dest)->inst_imm = (imm); \
364 (dest)->backend.shift_amount = (shift); \
365 MONO_ADD_INS ((cfg)->cbb, (dest)); \
366 } while (0)
367 #endif
369 #if SIZEOF_REGISTER == 8
370 #define ADD_WIDEN_OP(ins, arg1, arg2) do { \
372 if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) { \
373 MonoInst *widen; \
374 int dr = alloc_preg (cfg); \
375 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg); \
376 (ins)->sreg2 = widen->dreg; \
377 } \
378 } while (0)
379 #else
380 #define ADD_WIDEN_OP(ins, arg1, arg2)
381 #endif
383 #define ADD_BINOP(op) do { \
384 MONO_INST_NEW (cfg, ins, (op)); \
385 sp -= 2; \
386 ins->sreg1 = sp [0]->dreg; \
387 ins->sreg2 = sp [1]->dreg; \
388 type_from_op (ins, sp [0], sp [1]); \
389 CHECK_TYPE (ins); \
391 ADD_WIDEN_OP (ins, sp [0], sp [1]); \
392 ins->dreg = alloc_dreg ((cfg), (ins)->type); \
393 MONO_ADD_INS ((cfg)->cbb, (ins)); \
394 *sp++ = mono_decompose_opcode ((cfg), (ins)); \
395 } while (0)
397 #define ADD_UNOP(op) do { \
398 MONO_INST_NEW (cfg, ins, (op)); \
399 sp--; \
400 ins->sreg1 = sp [0]->dreg; \
401 type_from_op (ins, sp [0], NULL); \
402 CHECK_TYPE (ins); \
403 (ins)->dreg = alloc_dreg ((cfg), (ins)->type); \
404 MONO_ADD_INS ((cfg)->cbb, (ins)); \
405 *sp++ = mono_decompose_opcode (cfg, ins); \
406 } while (0)
408 #define ADD_BINCOND(next_block) do { \
409 MonoInst *cmp; \
410 sp -= 2; \
411 MONO_INST_NEW(cfg, cmp, OP_COMPARE); \
412 cmp->sreg1 = sp [0]->dreg; \
413 cmp->sreg2 = sp [1]->dreg; \
414 type_from_op (cmp, sp [0], sp [1]); \
415 CHECK_TYPE (cmp); \
416 type_from_op (ins, sp [0], sp [1]); \
417 ins->inst_many_bb = mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2); \
418 GET_BBLOCK (cfg, tblock, target); \
419 link_bblock (cfg, bblock, tblock); \
420 ins->inst_true_bb = tblock; \
421 if ((next_block)) { \
422 link_bblock (cfg, bblock, (next_block)); \
423 ins->inst_false_bb = (next_block); \
424 start_new_bblock = 1; \
425 } else { \
426 GET_BBLOCK (cfg, tblock, ip); \
427 link_bblock (cfg, bblock, tblock); \
428 ins->inst_false_bb = tblock; \
429 start_new_bblock = 2; \
430 } \
431 if (sp != stack_start) { \
432 handle_stack_args (cfg, stack_start, sp - stack_start); \
433 CHECK_UNVERIFIABLE (cfg); \
434 } \
435 MONO_ADD_INS (bblock, cmp); \
436 MONO_ADD_INS (bblock, ins); \
437 } while (0)
439 /* *
440 * link_bblock: Links two basic blocks
441 *
442 * links two basic blocks in the control flow graph, the 'from'
443 * argument is the starting block and the 'to' argument is the block
444 * the control flow ends to after 'from'.
445 */
446 static void
448 {
452 #if 0
455 printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
456 else
461 else
463 }
464 #endif
471 }
472 }
477 }
481 }
488 }
489 }
494 }
498 }
499 }
501 void
503 {
505 }
507 /**
508 * mono_find_block_region:
509 *
510 * We mark each basic block with a region ID. We use that to avoid BB
511 * optimizations when blocks are in different regions.
512 *
513 * Returns:
514 * A region token that encodes where this region is, and information
515 * about the clause owner for this block.
516 *
517 * The region encodes the try/catch/filter clause that owns this block
518 * as well as the type. -1 is a special value that represents a block
519 * that is in none of try/catch/filter.
520 */
521 static int
523 {
530 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
539 else
541 }
545 }
548 }
552 {
564 }
565 }
567 }
569 static void
571 {
579 /* prevent it from being register allocated */
583 }
585 MonoInst *
587 {
589 }
593 {
601 /* prevent it from being register allocated */
607 }
609 /*
610 * Returns the type used in the eval stack when @type is loaded.
611 * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
612 */
613 void
615 {
622 }
624 handle_enum:
668 }
678 /* FIXME: all the arguments must be references for now,
679 * later look inside cfg and see if the arg num is
680 * really a reference
681 */
687 }
688 }
690 /*
691 * The following tables are used to quickly validate the IL code in type_from_op ().
692 */
693 static const char
703 };
705 static const char
706 neg_table [] = {
708 };
710 /* reduce the size of this table */
711 static const char
721 };
723 static const char
725 /* Inv i L p F & O vt */
734 };
736 /* reduce the size of this table */
737 static const char
747 };
749 /*
750 * Tables to map from the non-specific opcode to the matching
751 * type-specific opcode.
752 */
753 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
754 static const guint16
757 };
759 /* handles from CEE_NEG to CEE_CONV_U8 */
760 static const guint16
763 };
765 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
766 static const guint16
768 0, OP_ICONV_TO_U2-CEE_CONV_U2, OP_LCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_FCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2, OP_PCONV_TO_U2-CEE_CONV_U2
769 };
771 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
772 static const guint16
774 0, OP_ICONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_LCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_FCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN, OP_PCONV_TO_OVF_I1_UN-CEE_CONV_OVF_I1_UN
775 };
777 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
778 static const guint16
780 0, OP_ICONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_LCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_FCONV_TO_OVF_I1-CEE_CONV_OVF_I1, OP_PCONV_TO_OVF_I1-CEE_CONV_OVF_I1
781 };
783 /* handles from CEE_BEQ to CEE_BLT_UN */
784 static const guint16
786 0, OP_IBEQ-CEE_BEQ, OP_LBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_FBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ, OP_PBEQ-CEE_BEQ
787 };
789 /* handles from CEE_CEQ to CEE_CLT_UN */
790 static const guint16
792 0, OP_ICEQ-OP_CEQ, OP_LCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_FCEQ-OP_CEQ, OP_PCEQ-OP_CEQ, OP_PCEQ-OP_CEQ
793 };
795 /*
796 * Sets ins->type (the type on the eval stack) according to the
797 * type of the opcode and the arguments to it.
798 * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
799 *
800 * FIXME: this function sets ins->type unconditionally in some cases, but
801 * it should set it to invalid for some types (a conv.x on an object)
802 */
803 static void
807 /* binops */
813 /* FIXME: check unverifiable args for STACK_MP */
835 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
839 else
844 if ((src1->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
870 /* unops */
878 else
899 }
932 #if SIZEOF_VOID_P == 8
934 #else
936 #endif
944 }
1012 }
1016 }
1018 static const char
1019 ldind_type [] = {
1020 STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_R8, STACK_OBJ
1021 };
1023 #if 0
1025 static const char
1028 };
1030 static int
1042 }
1043 args++;
1044 }
1065 }
1078 }
1079 /*if (!param_table [args [i].type] [sig->params [i]->type])
1080 return 0;*/
1081 }
1083 }
1084 #endif
1086 /*
1087 * When we need a pointer to the current domain many times in a method, we
1088 * call mono_domain_get() once and we store the result in a local variable.
1089 * This function returns the variable that represents the MonoDomain*.
1090 */
1093 {
1097 }
1099 /*
1100 * The got_var contains the address of the Global Offset Table when AOT
1101 * compiling.
1102 */
1103 MonoInst *
1105 {
1106 #ifdef MONO_ARCH_NEED_GOT_VAR
1111 }
1113 #else
1115 #endif
1116 }
1120 {
1125 /* force the var to be stack allocated */
1127 }
1130 }
1145 }
1147 }
1151 {
1186 else
1191 }
1194 }
1198 {
1232 }
1234 }
1236 /*
1237 * We try to share variables when possible
1238 */
1241 {
1245 /* inlining can result in deeper stacks */
1265 }
1267 }
1269 static void
1271 {
1272 /*
1273 * Don't use this if a generic_context is set, since that means AOT can't
1274 * look up the method using just the image+token.
1275 * table == 0 means this is a reference made from a wrapper.
1276 */
1278 MonoJumpInfoToken *jump_info_token = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1282 }
1283 }
1285 /*
1286 * This function is called to handle items that are left on the evaluation stack
1287 * at basic block boundaries. What happens is that we save the values to local variables
1288 * and we reload them later when first entering the target basic block (with the
1289 * handle_loaded_temps () function).
1290 * A single joint point will use the same variables (stored in the array bb->out_stack or
1291 * bb->in_stack, if the basic block is before or after the joint point).
1292 *
1293 * This function needs to be called _before_ emitting the last instruction of
1294 * the bb (i.e. before emitting a branch).
1295 * If the stack merge fails at a join point, cfg->unverifiable is set.
1296 */
1297 static void
1299 {
1304 gboolean found;
1312 //printf ("bblock %d has out:", bb->block_num);
1316 /* exception handlers are linked, but they should not be considered for stack args */
1319 //printf (" %d", outb->block_num);
1324 }
1325 }
1326 //printf ("\n");
1330 /*
1331 * try to reuse temps already allocated for this purpouse, if they occupy the same
1332 * stack slot and if they are of the same type.
1333 * This won't cause conflicts since if 'local' is used to
1334 * store one of the values in the in_stack of a bblock, then
1335 * the same variable will be used for the same outgoing stack
1336 * slot as well.
1337 * This doesn't work when inlining methods, since the bblocks
1338 * in the inlined methods do not inherit their in_stack from
1339 * the bblock they are inlined to. See bug #58863 for an
1340 * example.
1341 */
1344 else
1346 }
1347 }
1348 }
1352 /* exception handlers are linked, but they should not be considered for stack args */
1359 }
1361 }
1364 }
1374 }
1376 /*
1377 * It is possible that the out bblocks already have in_stack assigned, and
1378 * the in_stacks differ. In this case, we will store to all the different
1379 * in_stacks.
1380 */
1385 /* Find a bblock which has a different in_stack */
1389 /* exception handlers are linked, but they should not be considered for stack args */
1391 bindex++;
1393 }
1401 }
1405 }
1406 bindex ++;
1407 }
1408 }
1409 }
1411 /* Emit code which loads interface_offsets [klass->interface_id]
1412 * The array is stored in memory before vtable.
1413 */
1414 static void
1415 mini_emit_load_intf_reg_vtable (MonoCompile *cfg, int intf_reg, int vtable_reg, MonoClass *klass)
1416 {
1424 }
1426 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, intf_reg, vtable_reg, -((klass->interface_id + 1) * SIZEOF_VOID_P));
1427 }
1428 }
1430 static void
1431 mini_emit_interface_bitmap_check (MonoCompile *cfg, int intf_bit_reg, int base_reg, int offset, MonoClass *klass)
1432 {
1434 #ifdef COMPRESSED_INTERFACE_BITMAP
1442 else
1446 #else
1461 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, ibitmap_byte_reg, ibitmap_byte_address_reg, 0);
1467 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, ibitmap_byte_reg, ibitmap_reg, klass->interface_id >> 3);
1468 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_AND_IMM, intf_bit_reg, ibitmap_byte_reg, 1 << (klass->interface_id & 7));
1469 }
1470 #endif
1471 }
1473 /*
1474 * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoClass
1475 * stored in "klass_reg" implements the interface "klass".
1476 */
1477 static void
1478 mini_emit_load_intf_bit_reg_class (MonoCompile *cfg, int intf_bit_reg, int klass_reg, MonoClass *klass)
1479 {
1480 mini_emit_interface_bitmap_check (cfg, intf_bit_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, interface_bitmap), klass);
1481 }
1483 /*
1484 * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoVTable
1485 * stored in "vtable_reg" implements the interface "klass".
1486 */
1487 static void
1488 mini_emit_load_intf_bit_reg_vtable (MonoCompile *cfg, int intf_bit_reg, int vtable_reg, MonoClass *klass)
1489 {
1490 mini_emit_interface_bitmap_check (cfg, intf_bit_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, interface_bitmap), klass);
1491 }
1493 /*
1494 * Emit code which checks whenever the interface id of @klass is smaller than
1495 * than the value given by max_iid_reg.
1496 */
1497 static void
1500 {
1505 }
1506 else
1510 else
1512 }
1514 /* Same as above, but obtains max_iid from a vtable */
1515 static void
1518 {
1521 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, max_interface_id));
1523 }
1525 /* Same as above, but obtains max_iid from a klass */
1526 static void
1529 {
1532 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, max_interface_id));
1534 }
1536 static void
1537 mini_emit_isninst_cast_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_ins, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1538 {
1544 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, idepth));
1547 }
1548 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, supertypes));
1558 }
1560 }
1562 static void
1563 mini_emit_isninst_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1564 {
1566 }
1568 static void
1569 mini_emit_iface_cast (MonoCompile *cfg, int vtable_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1570 {
1578 else
1580 }
1582 /*
1583 * Variant of the above that takes a register to the class, not the vtable.
1584 */
1585 static void
1586 mini_emit_iface_class_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1587 {
1595 else
1597 }
1600 mini_emit_class_check_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_inst)
1601 {
1610 }
1612 }
1616 {
1618 }
1621 mini_emit_class_check_branch (MonoCompile *cfg, int klass_reg, MonoClass *klass, int branch_op, MonoBasicBlock *target)
1622 {
1629 }
1631 }
1633 static void
1634 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null);
1636 static void
1637 mini_emit_castclass_inst (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoInst *klass_inst, MonoBasicBlock *object_is_null)
1638 {
1644 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, rank));
1647 // MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
1648 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, cast_class));
1652 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, object_is_null);
1655 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, object_is_null);
1662 // Pass -1 as obj_reg to skip the check below for arrays of arrays
1664 }
1667 /* Check that the object is a vector too */
1672 }
1679 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, idepth));
1682 }
1683 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, supertypes));
1686 }
1687 }
1689 static void
1690 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null)
1691 {
1693 }
1695 static void
1697 {
1716 #if SIZEOF_REGISTER == 8
1720 #endif
1721 }
1722 }
1728 else
1732 /* This could be optimized further if neccesary */
1737 }
1739 }
1741 #if !NO_UNALIGNED_ACCESS
1747 }
1752 }
1753 }
1754 #endif
1760 }
1765 }
1770 }
1771 }
1773 void
1774 mini_emit_memcpy (MonoCompile *cfg, int destreg, int doffset, int srcreg, int soffset, int size, int align)
1775 {
1781 /*FIXME arbitrary hack to avoid unbound code expansion.*/
1785 /* This could be optimized further if neccesary */
1793 }
1794 }
1796 #if !NO_UNALIGNED_ACCESS
1805 }
1806 }
1807 #endif
1816 }
1824 }
1832 }
1833 }
1835 static int
1836 ret_type_to_call_opcode (MonoType *type, int calli, int virt, MonoGenericSharingContext *gsctx)
1837 {
1841 handle_enum:
1885 }
1887 }
1889 /*
1890 * target_type_is_incompatible:
1891 * @cfg: MonoCompile context
1892 *
1893 * Check that the item @arg on the evaluation stack can be stored
1894 * in the target type (can be a local, or field, etc).
1895 * The cfg arg can be used to check if we need verification or just
1896 * validity checks.
1897 *
1898 * Returns: non-0 value if arg can't be stored on a target.
1899 */
1900 static int
1902 {
1907 /* FIXME: check that the pointed to types match */
1913 }
1931 /* STACK_MP is needed when setting pinned locals */
1948 /* FIXME: check type compatibility */
1985 /* FIXME: check type compatibility */
1987 }
1990 /* FIXME: all the arguments must be references for now,
1991 * later look inside cfg and see if the arg num is
1992 * really a reference
1993 */
2000 }
2002 }
2004 /*
2005 * Prepare arguments for passing to a function call.
2006 * Return a non-zero value if the arguments can't be passed to the given
2007 * signature.
2008 * The type checks are not yet complete and some conversions may need
2009 * casts on 32 or 64 bit architectures.
2010 *
2011 * FIXME: implement this using target_type_is_incompatible ()
2012 */
2013 static int
2015 {
2022 args++;
2023 }
2029 }
2032 handle_enum:
2052 if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2077 }
2092 }
2093 }
2095 }
2097 static int
2099 {
2113 }
2116 }
2118 static int
2120 {
2134 }
2137 }
2139 #ifdef MONO_ARCH_HAVE_IMT
2140 static void
2142 {
2158 }
2160 #ifdef ENABLE_LLVM
2162 #endif
2163 #ifdef MONO_ARCH_IMT_REG
2165 #else
2166 /* Need this to keep the IMT arg alive */
2168 #endif
2170 }
2172 #ifdef MONO_ARCH_IMT_REG
2185 }
2188 #else
2190 #endif
2191 }
2192 #endif
2196 {
2204 }
2209 {
2211 #ifdef MONO_ARCH_SOFT_FLOAT
2213 #endif
2217 else
2218 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (sig->ret, calli, virtual, cfg->generic_sharing_context));
2229 //g_assert_not_reached ();
2230 }
2237 /*
2238 * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2239 * address of return value to increase optimization opportunities.
2240 * Before vtype decomposition, the dreg of the call ins itself represents the
2241 * fact the call modifies the return value. After decomposition, the call will
2242 * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2243 * will be transformed into an LDADDR.
2244 */
2248 /* We reference the call too since call->dreg could change during optimization */
2258 #ifdef MONO_ARCH_SOFT_FLOAT
2260 /*
2261 * If the call has a float argument, we would need to do an r8->r4 conversion using
2262 * an icall, but that cannot be done during the call sequence since it would clobber
2263 * the call registers + the stack. So we do it before emitting the call.
2264 */
2271 else
2282 /* The result will be in an int vreg */
2284 }
2285 }
2286 }
2287 #endif
2289 #ifdef ENABLE_LLVM
2292 else
2294 #else
2296 #endif
2302 }
2304 static void
2306 {
2307 #ifdef MONO_ARCH_RGCTX_REG
2311 #ifdef ENABLE_LLVM
2313 #endif
2314 #else
2315 NOT_IMPLEMENTED;
2316 #endif
2317 }
2320 mono_emit_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *rgctx_arg)
2321 {
2328 }
2340 }
2343 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, int rgctx_type);
2350 {
2351 gboolean might_be_remote;
2361 }
2364 /* Create the real signature */
2365 /* FIXME: Cache these */
2370 }
2383 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2386 }
2392 else
2402 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
2403 if ((method->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (method->name, "Invoke"))) {
2408 /* Make a call to delegate->invoke_impl */
2414 /* We must emit a dummy use here because the delegate trampoline will
2415 replace the 'this' argument with the delegate target making this activation
2416 no longer a root for the delegate.
2417 This is an issue for delegates that target collectible code such as dynamic
2418 methods of GC'able assemblies.
2420 For a test case look into #667921.
2422 FIXME: a dummy use is not the best way to do it as the local register allocator
2423 will put it on a caller save register and spil it around the call.
2424 Ideally, we would either put it on a callee save register or only do the store part.
2425 */
2429 }
2430 #endif
2437 /*
2438 * the method is not virtual, we just need to ensure this is not null
2439 * and then we can call the method directly.
2440 */
2442 /*
2443 * The check above ensures method is not gshared, this is needed since
2444 * gshared methods can't have wrappers.
2445 */
2447 }
2457 }
2460 /*
2461 * the method is virtual, but we can statically dispatch since either
2462 * it's class or the method itself are sealed.
2463 * But first we need to ensure it's not a null reference.
2464 */
2471 }
2476 MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, G_STRUCT_OFFSET (MonoObject, vtable));
2479 #ifdef MONO_ARCH_HAVE_IMT
2485 }
2486 #endif
2491 }
2496 #ifdef MONO_ARCH_HAVE_IMT
2500 }
2501 #endif
2502 }
2506 }
2514 }
2516 MonoInst*
2518 {
2519 return mono_emit_method_call_full (cfg, method, mono_method_signature (method), args, this, NULL, NULL);
2520 }
2522 MonoInst*
2525 {
2536 }
2538 MonoInst*
2540 {
2546 }
2548 /*
2549 * mono_emit_abs_call:
2550 *
2551 * Emit a call to the runtime function described by PATCH_TYPE and DATA.
2552 */
2556 {
2560 /*
2561 * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2562 * handle it.
2563 */
2570 }
2574 {
2579 /*
2580 * Native code might return non register sized integers
2581 * without initializing the upper bits.
2582 */
2598 }
2607 }
2608 }
2609 }
2612 }
2616 {
2622 }
2624 }
2626 static void
2628 {
2642 /*FIXME support nested value types so this works for: struct X { Y y; int z;} struct Y { object a,b; }*/
2646 }
2647 }
2648 }
2650 static void
2652 {
2654 gpointer card_table_mask;
2668 #ifdef MONO_ARCH_HAVE_CARD_TABLE_WBARRIER
2670 #endif
2679 else
2691 /*We can't use PADD_IMM since the cardtable might end up in high addresses and amd64 doesn't support
2692 * IMM's larger than 32bits.
2693 */
2701 }
2708 }
2716 }
2717 }
2719 static gboolean
2720 mono_emit_wb_aware_memcpy (MonoCompile *cfg, MonoClass *klass, MonoInst *iargs[4], int size, int align)
2721 {
2728 /*types with references can't have alignment smaller than sizeof(void*) */
2732 /*This value cannot be bigger than 32 due to the way we calculate the required wb bitmap.*/
2738 /* We don't unroll more than 5 stores to avoid code bloat. */
2740 /*This is harmless and simplify mono_gc_wbarrier_value_copy_bitmap */
2748 }
2757 /*tmp = dreg*/
2771 /*tmp += sizeof (void*)*/
2775 }
2776 }
2778 /* Those cannot be references since size < sizeof (void*) */
2784 }
2791 }
2798 }
2801 }
2803 /*
2804 * Emit code to copy a valuetype of type @klass whose address is stored in
2805 * @src->dreg to memory whose address is stored at @dest->dreg.
2806 */
2807 void
2808 mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native)
2809 {
2816 /*
2817 * This check breaks with spilled vars... need to handle it during verification anyway.
2818 * g_assert (klass && klass == src->klass && klass == dest->klass);
2819 */
2823 else
2826 /* if native is true there should be no references in the struct */
2828 /* Avoid barriers when storing to the stack */
2839 /* It's ok to intrinsify under gsharing since shared code types are layout stable. */
2840 if ((cfg->opt & MONO_OPT_INTRINS) && mono_emit_wb_aware_memcpy (cfg, klass, iargs, n, align)) {
2850 }
2851 }
2855 }
2856 }
2859 /* FIXME: Optimize the case when src/dest is OP_LDADDR */
2868 }
2869 }
2873 {
2879 }
2881 }
2883 void
2885 {
2888 guint32 align;
2891 /* FIXME: Optimize this for the case when dest is an LDADDR */
2898 }
2905 }
2906 }
2910 {
2943 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, G_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
2945 }
2953 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this->dreg, G_STRUCT_OFFSET (MonoObject, vtable));
2955 }
2956 }
2959 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, int info_type)
2960 {
2970 }
2974 {
2975 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
2976 }
2981 {
2982 MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_CLASS, klass, rgctx_type);
2986 }
2988 /*
2989 * emit_get_rgctx_method:
2990 *
2991 * Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
2992 * normal constants, else emit a load from the rgctx.
2993 */
2997 {
3010 }
3012 MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_METHODCONST, cmethod, rgctx_type);
3016 }
3017 }
3022 {
3023 MonoJumpInfoRgctxEntry *entry = mono_patch_info_rgctx_entry_new (cfg->mempool, cfg->current_method, context_used & MONO_GENERIC_CONTEXT_USED_METHOD, MONO_PATCH_INFO_FIELD, field, rgctx_type);
3027 }
3029 /*
3030 * On return the caller must check @klass for load errors.
3031 */
3032 static void
3034 {
3051 }
3054 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_GENERIC_CLASS_INIT, NULL, helper_sig_generic_class_init_trampoline_llvm, &vtable_arg);
3055 else
3056 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_GENERIC_CLASS_INIT, NULL, helper_sig_generic_class_init_trampoline, &vtable_arg);
3057 #ifdef MONO_ARCH_VTABLE_REG
3060 #else
3061 NOT_IMPLEMENTED;
3062 #endif
3063 }
3065 static void
3067 {
3077 }
3083 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, G_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
3085 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, G_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
3086 }
3087 }
3089 static void
3091 {
3092 /* Reset the variables holding the cast details */
3097 /* It is enough to reset the from field */
3098 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, G_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3099 }
3100 }
3102 /*
3103 * On return the caller must check @array_class for load errors
3104 */
3105 static void
3107 {
3116 MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj->dreg, G_STRUCT_OFFSET (MonoObject, vtable));
3127 }
3148 }
3149 }
3154 }
3156 /**
3157 * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
3158 * generic code is generated.
3159 */
3162 {
3168 /* FIXME: What if the class is shared? We might not
3169 have to get the address of the method from the
3170 RGCTX. */
3172 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3179 }
3180 }
3184 {
3193 MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
3194 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, rank));
3196 /* FIXME: generics */
3199 // Check rank == 0
3204 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, element_class));
3209 /* This assertion is from the unboxcast insn */
3221 }
3223 NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_MP), obj_reg, sizeof (MonoObject));
3229 }
3231 /*
3232 * Returns NULL and set the cfg exception on error.
3233 */
3236 {
3245 /*
3246 FIXME: we cannot get managed_alloc here because we can't get
3247 the class's vtable (because it's not a closed class)
3249 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3250 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (vtable, for_box);
3251 */
3255 else
3266 }
3269 }
3276 } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !klass->generic_class) {
3277 /* This happens often in argument checking code, eg. throw new FooException... */
3278 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
3284 gboolean pass_lw;
3290 }
3292 #ifndef MONO_CROSS_COMPILE
3294 #endif
3299 }
3306 }
3309 }
3310 }
3313 }
3315 /*
3316 * Returns NULL and set the cfg exception on error.
3317 */
3320 {
3327 /* FIXME: What if the class is shared? We might not
3328 have to get the method address from the RGCTX. */
3330 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3336 }
3337 }
3343 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3346 }
3349 static gboolean
3351 {
3364 }
3368 if (!(mono_generic_container_get_param_info (container, i)->flags & (MONO_GEN_PARAM_VARIANT|MONO_GEN_PARAM_COVARIANT)))
3376 }
3378 }
3380 // FIXME: This doesn't work yet (class libs tests fail?)
3381 #define is_complex_isinst(klass) (TRUE || (klass->flags & TYPE_ATTRIBUTE_INTERFACE) || klass->rank || mono_class_is_nullable (klass) || klass->marshalbyref || (klass->flags & TYPE_ATTRIBUTE_SEALED) || klass->byval_arg.type == MONO_TYPE_VAR || klass->byval_arg.type == MONO_TYPE_MVAR)
3383 /*
3384 * Returns NULL and set the cfg exception on error.
3385 */
3388 {
3403 /* obj */
3406 /* klass - it's the second element of the cache entry*/
3407 EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
3409 /* cache */
3413 }
3418 /* Complex case, handle by an icall */
3420 /* obj */
3423 /* klass */
3428 /* Simple case, handled by the code below */
3429 }
3430 }
3447 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
3448 /* the remoting code is broken, access the class for now */
3449 if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
3455 }
3460 }
3465 }
3466 }
3473 }
3475 /*
3476 * Returns NULL and set the cfg exception on error.
3477 */
3480 {
3497 /* obj */
3500 /* klass - it's the second element of the cache entry*/
3501 EMIT_NEW_LOAD_MEMBASE (cfg, args [1], OP_LOAD_MEMBASE, alloc_preg (cfg), cache_ins->dreg, sizeof (gpointer));
3503 /* cache */
3507 }
3512 /* Complex case, handle by an icall */
3514 /* obj */
3517 /* klass */
3522 /* Simple case, the code below can handle it */
3523 }
3524 }
3530 /* Do the assignment at the beginning, so the other assignment can be if converted */
3542 /* the is_null_bb target simply copies the input register to the output */
3552 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, rank));
3556 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, cast_class));
3560 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
3564 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
3574 /* Check that the object is a vector too */
3579 }
3581 /* the is_null_bb target simply copies the input register to the output */
3583 }
3587 /* the is_null_bb target simply copies the input register to the output */
3590 if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
3592 /* the remoting code is broken, access the class for now */
3593 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
3599 }
3604 }
3609 /* the is_null_bb target simply copies the input register to the output */
3611 }
3612 }
3613 }
3625 }
3629 {
3630 /* This opcode takes as input an object reference and a class, and returns:
3631 0) if the object is an instance of the class,
3632 1) if the object is not instance of the class,
3633 2) if the object is a proxy whose type cannot be determined */
3660 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
3663 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
3671 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
3673 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
3674 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, G_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
3677 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
3687 }
3705 /* FIXME: */
3711 }
3715 {
3716 /* This opcode takes as input an object reference and a class, and returns:
3717 0) if the object is an instance of the class,
3718 1) if the object is a proxy whose type cannot be determined
3719 an InvalidCastException exception is thrown otherwhise*/
3747 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
3759 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
3762 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
3763 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, G_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
3766 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
3782 }
3790 /* FIXME: */
3796 }
3798 /*
3799 * Returns NULL and set the cfg exception on error.
3800 */
3802 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used)
3803 {
3815 /* Inline the contents of mono_delegate_ctor */
3817 /* Set target field */
3818 /* Optimize away setting of NULL target */
3820 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
3823 EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, target));
3825 }
3826 }
3828 /* Set method field */
3830 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
3833 EMIT_NEW_BIALU_IMM (cfg, ptr, OP_PADD_IMM, dreg, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, method));
3835 }
3836 /*
3837 * To avoid looking up the compiled code belonging to the target method
3838 * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
3839 * store it, and we fill it after the method has been compiled.
3840 */
3845 code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
3855 }
3859 }
3860 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
3861 }
3863 /* Set invoke_impl field */
3869 }
3870 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
3872 /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
3875 }
3879 {
3882 /* Need to register the icall so it gets an icall wrapper */
3887 /* mono_array_new_va () needs a vararg calling convention */
3890 /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
3892 }
3894 static void
3896 {
3905 /* Add it to the start of the first bblock */
3909 }
3910 else
3915 /*
3916 * Add a dummy use to keep the got_var alive, since real uses might
3917 * only be generated by the back ends.
3918 * Add it to end_bblock, so the variable's lifetime covers the whole
3919 * method.
3920 * It would be better to make the usage of the got var explicit in all
3921 * cases when the backend needs it (i.e. calls, throw etc.), so this
3922 * wouldn't be needed.
3923 */
3926 }
3931 static gboolean
3933 {
3934 MonoMethodHeaderSummary header;
3936 #ifdef MONO_ARCH_SOFT_FLOAT
3939 #endif
3947 #ifdef MONO_ARCH_HAVE_LMF_OPS
3952 #endif
3958 /*runtime, icall and pinvoke are checked by summary call*/
3965 /* also consider num_locals? */
3966 /* Do the size check early to avoid creating vtables */
3970 else
3973 }
3977 /*
3978 * if we can initialize the class of the method right away, we do,
3979 * otherwise we don't allow inlining if the class needs initialization,
3980 * since it would mean inserting a call to mono_runtime_class_init()
3981 * inside the inlined code
3982 */
3986 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
3988 /* No vtable created yet */
3993 /* This makes so that inline cannot trigger */
3994 /* .cctors: too many apps depend on them */
3995 /* running with a specific order... */
3999 }
4002 /* No vtable created yet */
4009 }
4011 /*
4012 * If we're compiling for shared code
4013 * the cctor will need to be run at aot method load time, for example,
4014 * or at the end of the compilation of the inlining method.
4015 */
4016 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
4018 }
4020 /*
4021 * CAS - do not inline methods with declarative security
4022 * Note: this has to be before any possible return TRUE;
4023 */
4027 #ifdef MONO_ARCH_SOFT_FLOAT
4028 /* FIXME: */
4034 #endif
4037 }
4039 static gboolean
4041 {
4052 /* The initialization is already done before the method is called */
4056 }
4059 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
4060 {
4062 guint32 size;
4072 #if SIZEOF_REGISTER == 8
4073 /* The array reg is 64 bits but the index reg is only 32 */
4075 /* Not needed */
4080 }
4081 #else
4087 }
4088 #endif
4093 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4097 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], G_STRUCT_OFFSET (MonoArray, vector));
4102 }
4103 #endif
4115 }
4117 #ifndef MONO_ARCH_EMULATE_MUL_DIV
4119 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
4120 {
4134 guint32 size;
4142 /* range checking */
4173 }
4174 #endif
4177 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
4178 {
4189 #ifndef MONO_ARCH_EMULATE_MUL_DIV
4190 /* emit_ldelema_2 depends on OP_LMUL */
4193 }
4194 #endif
4201 }
4203 static MonoBreakPolicy
4205 {
4207 }
4211 /**
4212 * mono_set_break_policy:
4213 * policy_callback: the new callback function
4214 *
4215 * Allow embedders to decide wherther to actually obey breakpoint instructions
4216 * (both break IL instructions and Debugger.Break () method calls), for example
4217 * to not allow an app to be aborted by a perfectly valid IL opcode when executing
4218 * untrusted or semi-trusted code.
4219 *
4220 * @policy_callback will be called every time a break point instruction needs to
4221 * be inserted with the method argument being the method that calls Debugger.Break()
4222 * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
4223 * if it wants the breakpoint to not be effective in the given method.
4224 * #MONO_BREAK_POLICY_ALWAYS is the default.
4225 */
4226 void
4228 {
4231 else
4233 }
4235 static gboolean
4247 }
4248 }
4250 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
4252 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4253 {
4257 /* the bounds check is already done by the callers */
4265 }
4267 }
4270 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4271 {
4273 #ifdef MONO_ARCH_SIMD_INTRINSICS
4278 }
4279 #endif
4282 }
4285 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4286 {
4301 #if SIZEOF_REGISTER == 8
4302 /* The array reg is 64 bits but the index reg is only 32 */
4304 #else
4306 #endif
4309 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4310 EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, G_STRUCT_OFFSET (MonoString, chars));
4312 /* Avoid a warning */
4316 #else
4321 #endif
4326 /* Decompose later to allow more optimizations */
4338 /* The corlib functions check for oob already. */
4341 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, add_reg, G_STRUCT_OFFSET (MonoString, chars), args [2]->dreg);
4350 MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, G_STRUCT_OFFSET (MonoObject, vtable));
4351 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, G_STRUCT_OFFSET (MonoVTable, type));
4355 #if !defined(MONO_ARCH_EMULATE_MUL_DIV)
4365 #endif
4376 #ifndef MONO_BIG_ARRAYS
4377 /*
4378 * This is an inline version of GetLength/GetLowerBound(0) used frequently in
4379 * Array methods.
4380 */
4381 if ((strcmp (cmethod->name, "GetLength") == 0 || strcmp (cmethod->name, "GetLowerBound") == 0) && args [1]->opcode == OP_ICONST && args [1]->inst_c0 == 0) {
4394 /* Non-szarray case */
4398 else
4403 /* Szarray case */
4407 else
4415 }
4416 #endif
4457 }
4459 #if defined(MONO_ARCH_MONITOR_OBJECT_REG)
4464 /*
4465 * Pass the argument normally, the LLVM backend will handle the
4466 * calling convention problems.
4467 */
4468 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER, NULL, helper_sig_monitor_enter_exit_trampoline_llvm, args);
4474 }
4481 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_EXIT, NULL, helper_sig_monitor_enter_exit_trampoline_llvm, args);
4487 }
4490 }
4491 #elif defined(MONO_ARCH_ENABLE_MONITOR_IL_FASTPATH)
4494 /* Avoid infinite recursion */
4507 #endif
4513 #if SIZEOF_REGISTER == 8
4515 /* 64 bit reads are already atomic */
4521 }
4522 #endif
4524 #ifdef MONO_ARCH_HAVE_ATOMIC_ADD
4531 #if SIZEOF_REGISTER == 8
4534 #endif
4548 }
4555 #if SIZEOF_REGISTER == 8
4558 #endif
4572 }
4578 #if SIZEOF_REGISTER == 8
4581 #endif
4591 }
4592 }
4595 #ifdef MONO_ARCH_HAVE_ATOMIC_EXCHANGE
4597 guint32 opcode;
4602 #if SIZEOF_REGISTER == 8
4606 #else
4609 #endif
4610 else
4633 }
4637 }
4640 #ifdef MONO_ARCH_HAVE_ATOMIC_CAS
4667 /* g_assert_not_reached (); */
4668 }
4671 }
4681 else
4685 }
4688 #ifdef TARGET_WIN32
4690 #else
4692 #endif
4694 }
4696 /*
4697 * There is general branches code for Min/Max, but it does not work for
4698 * all inputs:
4699 * http://everything2.com/?node_id=1051618
4700 */
4701 }
4703 #ifdef MONO_ARCH_SIMD_INTRINSICS
4708 }
4709 #endif
4712 }
4714 /*
4715 * This entry point could be used later for arbitrary method
4716 * redirection.
4717 */
4721 {
4723 /* managed string allocation support */
4724 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && !(cfg->opt & MONO_OPT_SHARED)) {
4730 #ifndef MONO_CROSS_COMPILE
4732 #endif
4738 }
4739 }
4741 }
4743 static void
4745 {
4750 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
4752 /*
4753 * FIXME: We should use *args++ = sp [0], but that would mean the arg
4754 * would be different than the MonoInst's used to represent arguments, and
4755 * the ldelema implementation can't deal with that.
4756 * Solution: When ldelema is used on an inline argument, create a var for
4757 * it, emit ldelema on that var, and emit the saving code below in
4758 * inline_method () if needed.
4759 */
4762 /* This uses cfg->args [i] which is set by the preceeding line */
4765 sp++;
4766 }
4767 }
4769 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
4770 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
4772 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
4773 static gboolean
4775 {
4784 else
4786 }
4794 //return (strncmp_result <= 0);
4798 }
4799 }
4800 #endif
4802 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
4803 static gboolean
4805 {
4815 }
4816 }
4824 //return (strncmp_result <= 0);
4828 }
4829 }
4830 #endif
4832 static int
4833 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
4835 {
4843 guint prev_real_offset;
4848 guint32 prev_cil_offset_to_bb_len;
4855 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
4858 #endif
4859 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
4862 #endif
4865 printf ("INLINE START %p %s -> %s\n", cmethod, mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
4870 }
4872 /* allocate local variables */
4885 }
4887 /*Must verify before creating locals as it can cause the JIT to assert.*/
4891 }
4893 /* allocate space to store the return value */
4896 }
4903 /* allocate start and end blocks */
4904 /* This is needed so if the inline is aborted, we can clean up */
4931 costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, dont_inline, sp, real_offset, virtual);
4951 printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
4955 /* always add some code to avoid block split failures */
4962 /*
4963 * Get rid of the begin and end bblocks if possible to aid local
4964 * optimizations.
4965 */
4968 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
4975 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
4978 }
4981 }
4984 /*
4985 * If the inlined method contains only a throw, then the ret var is not
4986 * set, so set it to a dummy value.
4987 */
5015 }
5016 }
5020 }
5029 /* This gets rid of the newly added bblocks */
5031 }
5034 }
5036 /*
5037 * Some of these comments may well be out-of-date.
5038 * Design decisions: we do a single pass over the IL code (and we do bblock
5039 * splitting/merging in the few cases when it's required: a back jump to an IL
5040 * address that was not already seen as bblock starting point).
5041 * Code is validated as we go (full verification is still better left to metadata/verify.c).
5042 * Complex operations are decomposed in simpler ones right away. We need to let the
5043 * arch-specific code peek and poke inside this process somehow (except when the
5044 * optimizations can take advantage of the full semantic info of coarse opcodes).
5045 * All the opcodes of the form opcode.s are 'normalized' to opcode.
5046 * MonoInst->opcode initially is the IL opcode or some simplification of that
5047 * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
5048 * opcode with value bigger than OP_LAST.
5049 * At this point the IR can be handed over to an interpreter, a dumb code generator
5050 * or to the optimizing code generator that will translate it to SSA form.
5051 *
5052 * Profiling directed optimizations.
5053 * We may compile by default with few or no optimizations and instrument the code
5054 * or the user may indicate what methods to optimize the most either in a config file
5055 * or through repeated runs where the compiler applies offline the optimizations to
5056 * each method and then decides if it was worth it.
5057 */
5059 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
5060 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
5061 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
5062 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
5063 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
5064 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
5065 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
5066 #define CHECK_TYPELOAD(klass) if (!(klass) || (klass)->exception_type) {cfg->exception_ptr = klass; LOAD_ERROR;}
5068 /* offset from br.s -> br like opcodes */
5069 #define BIG_BRANCH_OFFSET 13
5071 static gboolean
5073 {
5077 }
5079 static int
5080 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
5081 {
5085 guint cli_addr;
5093 UNVERIFIED;
5097 ip++;
5132 guint32 j;
5142 }
5144 }
5151 }
5156 /* Find the start of the bblock containing the throw */
5160 bb_start --;
5161 }
5164 }
5165 }
5167 unverified:
5170 }
5173 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
5174 {
5183 }
5186 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
5187 {
5190 if (method && cfg && !cfg->generic_sharing_context && mono_class_is_open_constructed_type (&method->klass->byval_arg))
5194 }
5198 {
5203 else
5208 }
5210 /*
5211 * Returns TRUE if the JIT should abort inlining because "callee"
5212 * is influenced by security attributes.
5213 */
5214 static
5216 {
5217 guint32 result;
5221 }
5228 /* Generate code to throw a SecurityException before the actual call/link */
5236 /* don't hide previous results */
5240 }
5243 }
5247 {
5253 }
5256 }
5258 static void
5260 {
5266 }
5268 /*
5269 * Return the original method is a wrapper is specified. We can only access
5270 * the custom attributes from the original method.
5271 */
5274 {
5278 /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
5282 /* in other cases we need to find the original method */
5284 }
5286 static void
5287 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field,
5289 {
5290 /* we can't get the coreclr security level on wrappers since they don't have the attributes */
5291 MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
5294 }
5296 static void
5297 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee,
5299 {
5300 /* we can't get the coreclr security level on wrappers since they don't have the attributes */
5301 MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
5304 }
5306 /*
5307 * Check that the IL instructions at ip are the array initialization
5308 * sequence and return the pointer to the data and the size.
5309 */
5311 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
5312 {
5313 /*
5314 * newarr[System.Int32]
5315 * dup
5316 * ldtoken field valuetype ...
5317 * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
5318 */
5323 guint32 rva;
5328 MonoClassField *field = mono_field_from_token (method->klass->image, field_token, &dummy_class, NULL);
5339 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
5346 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
5347 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
5357 #ifdef ARM_FPU_FPA
5359 #endif
5363 #endif
5366 }
5371 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
5376 /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
5377 /* for aot code we do the lookup on load */
5381 /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
5384 }
5386 }
5388 }
5390 static void
5392 {
5399 else
5402 cfg->exception_message = g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code);
5406 }
5408 static void
5410 {
5414 }
5416 static gboolean
5418 {
5423 else
5426 }
5428 static void
5430 {
5435 /* Optimize reg-reg moves away */
5436 /*
5437 * Can't optimize other opcodes, since sp[0] might point to
5438 * the last ins of a decomposed opcode.
5439 */
5443 }
5444 }
5446 /*
5447 * ldloca inhibits many optimizations so try to get rid of it in common
5448 * cases.
5449 */
5452 {
5462 }
5464 if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
5467 /* From the INITOBJ case */
5479 }
5483 }
5484 load_error:
5486 }
5488 static gboolean
5490 {
5495 }
5497 }
5499 /*
5500 * is_jit_optimizer_disabled:
5501 *
5502 * Determine whenever M's assembly has a DebuggableAttribute with the
5503 * IsJITOptimizerDisabled flag set.
5504 */
5505 static gboolean
5507 {
5519 klass = mono_class_from_name (mono_defaults.corlib, "System.Diagnostics", "DebuggableAttribute");
5521 /* Linked away */
5526 }
5538 /* Decode the attribute. See reflection.c */
5544 // FIXME: Support named parameters
5546 if (sig->param_count != 2 || sig->params [0]->type != MONO_TYPE_BOOLEAN || sig->params [1]->type != MONO_TYPE_BOOLEAN)
5548 /* Two boolean arguments */
5549 p ++;
5551 }
5553 }
5560 }
5562 static gboolean
5563 is_supported_tail_call (MonoCompile *cfg, MonoMethod *method, MonoMethod *cmethod, MonoMethodSignature *fsig)
5564 {
5565 gboolean supported_tail_call;
5568 #ifdef MONO_ARCH_USE_OP_TAIL_CALL
5569 supported_tail_call = MONO_ARCH_USE_OP_TAIL_CALL (mono_method_signature (method), mono_method_signature (cmethod));
5570 #else
5571 supported_tail_call = mono_metadata_signature_equal (mono_method_signature (method), mono_method_signature (cmethod)) && !MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->ret);
5572 #endif
5575 if (fsig->params [i]->byref || fsig->params [i]->type == MONO_TYPE_PTR || fsig->params [i]->type == MONO_TYPE_FNPTR)
5576 /* These can point to the current method's stack */
5578 }
5580 /* this might point to the current method's stack */
5589 /* Debugging support */
5590 #if 0
5593 count ++;
5599 }
5600 }
5601 #endif
5604 }
5606 /*
5607 * mono_method_to_ir:
5608 *
5609 * Translate the .net IL into linear IR.
5610 */
5611 int
5612 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
5615 {
5616 MonoError error;
5636 guint num_args;
5639 MonoDeclSecurityActions actions;
5644 gboolean disable_inline;
5648 /* serialization and xdomain stuff may need access to private fields and methods */
5658 /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
5673 cfg->exception_message = g_strdup_printf ("Missing or incorrect header for method %s", cfg->method->name);
5674 }
5676 }
5688 /*
5689 * Methods without init_locals set could cause asserts in various passes
5690 * (#497220).
5691 */
5698 }
5700 /* SkipVerification is not allowed if core-clr is enabled */
5704 }
5721 }
5729 }
5731 cfg->cil_offset_to_bb = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
5752 /* ENTRY BLOCK */
5757 #if defined(__native_client_codegen__)
5761 #endif
5763 /* EXIT BLOCK */
5776 }
5777 /* handle exception clauses */
5803 }
5805 /* todo: is a fault block unsafe to optimize? */
5808 }
5811 /*printf ("clause try IL_%04x to IL_%04x handler %d at IL_%04x to IL_%04x\n", clause->try_offset, clause->try_offset + clause->try_len, clause->flags, clause->handler_offset, clause->handler_offset + clause->handler_len);
5812 while (p < end) {
5813 printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
5814 }*/
5815 /* catch and filter blocks get the exception object on the stack */
5820 /* mostly like handle_stack_args (), but just sets the input args */
5821 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
5826 /*
5827 * Add a dummy use for the exvar so its liveness info will be
5828 * correct.
5829 */
5839 /* The filter block shares the exvar with the handler block */
5843 }
5844 }
5850 /*
5851 * In shared generic code with catch
5852 * clauses containing type variables
5853 * the exception handling code has to
5854 * be able to get to the rgctx.
5855 * Therefore we have to make sure that
5856 * the vtable/mrgctx argument (for
5857 * static or generic methods) or the
5858 * "this" argument (for non-static
5859 * methods) are live.
5860 */
5869 }
5870 }
5871 }
5877 }
5879 /* FIRST CODE BLOCK */
5892 }
5893 }
5899 /* at this point having security doesn't mean we have any code to generate */
5901 /* Only Demand, NonCasDemand and DemandChoice requires code generation.
5902 * And we do not want to enter the next section (with allocation) if we
5903 * have nothing to generate */
5905 }
5907 /* we must Demand SecurityPermission.Unmanaged before P/Invoking */
5914 /* unless the method or it's class has the [SuppressUnmanagedCodeSecurity] attribute */
5917 }
5925 }
5928 }
5930 /* not a P/Invoke after all */
5932 }
5933 }
5935 if ((init_locals || (cfg->method == method && (cfg->opt & MONO_OPT_SHARED))) || cfg->compile_aot || security || pinvoke) {
5936 /* we use a separate basic block for the initialization code */
5949 }
5951 /* at this point we know, if security is TRUE, that some code needs to be generated */
5958 /* Add code for SecurityAction.Demand */
5961 /* Calls static void SecurityManager.InternalDemand (byte* permissions, int size); */
5963 }
5965 /* CLR 1.x uses a .noncasdemand (but 2.x doesn't) */
5966 /* For Mono we re-route non-CAS Demand to Demand (as the managed code must deal with it anyway) */
5969 /* Calls static void SecurityManager.InternalDemand (byte* permissions, int size); */
5971 }
5973 /* New in 2.0, Demand must succeed for one of the permissions (i.e. not all) */
5976 /* Calls static void SecurityManager.InternalDemandChoice (byte* permissions, int size); */
5978 }
5979 }
5981 /* we must Demand SecurityPermission.Unmanaged before p/invoking */
5984 }
5987 /* check if this is native code, e.g. an icall or a p/invoke */
5994 /* if this ia a native call then it can only be JITted from platform code */
6000 }
6001 }
6002 }
6003 }
6004 }
6007 UNVERIFIED;
6011 UNVERIFIED;
6012 }
6019 UNVERIFIED;
6020 }
6023 /* We force the vtable variable here for all shared methods
6024 for the possibility that they might show up in a stack
6025 trace where their exact instantiation is needed. */
6032 /* FIXME: Is there a better way to do this?
6033 We need the variable live for the duration
6034 of the whole method. */
6036 }
6037 }
6039 /* add a check for this != NULL to inlined methods */
6046 }
6053 UNVERIFIED;
6054 }
6056 }
6058 /* we use a spare stack slot in SWITCH and NEWOBJ and others */
6059 stack_start = sp = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
6067 else
6079 }
6089 }
6100 }
6109 }
6112 }
6113 }
6131 }
6135 }
6136 }
6137 /*
6138 * Sequence points are points where the debugger can place a breakpoint.
6139 * Currently, we generate these automatically at points where the IL
6140 * stack is empty.
6141 */
6145 }
6153 /* TODO: Use an increment here */
6154 #if defined(TARGET_X86)
6159 #else
6162 #endif
6163 }
6166 printf ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
6172 else
6174 ip++;
6180 else
6182 ip++;
6193 ip++;
6204 ip++;
6216 UNVERIFIED;
6221 }
6248 UNVERIFIED;
6271 }
6277 }
6284 UNVERIFIED;
6347 #ifdef TARGET_POWERPC
6348 /* FIXME: Clean this up */
6351 #endif
6353 /* FIXME: we should really allocate this only late in the compilation process */
6373 }
6379 }
6384 #ifdef TARGET_POWERPC
6385 /* FIXME: Clean this up */
6388 #endif
6390 /* FIXME: we should really allocate this only late in the compilation process */
6410 }
6416 }
6421 sp--;
6436 }
6439 ip++;
6442 #ifdef TARGET_X86
6444 /* we need to pop the value from the x86 FP stack */
6446 #endif
6451 INLINE_FAILURE;
6455 UNVERIFIED;
6457 /* FIXME: check the signature matches */
6461 LOAD_ERROR;
6467 CHECK_CFG_EXCEPTION;
6469 #ifdef MONO_ARCH_USE_OP_TAIL_CALL
6470 {
6474 /* Handle tail calls similarly to calls */
6488 }
6489 #else
6491 /* Prevent arguments from being optimized away */
6498 #endif
6503 }
6530 else
6538 /*
6539 * This is a call through a function pointer using a pinvoke
6540 * signature. Have to create a wrapper and call that instead.
6541 * FIXME: This is very slow, need to create a wrapper at JIT time
6542 * instead based on the signature.
6543 */
6548 }
6556 if ((constrained_call->byval_arg.type == MONO_TYPE_VAR || constrained_call->byval_arg.type == MONO_TYPE_MVAR) && cfg->generic_sharing_context) {
6557 /*
6558 * This is needed since get_method_constrained can't find
6559 * the method in klass representing a type var.
6560 * The type var is guaranteed to be a reference type in this
6561 * case.
6562 */
6567 cmethod = mono_get_method_constrained (image, token, constrained_call, generic_context, &cil_method);
6568 }
6572 }
6575 LOAD_ERROR;
6579 target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context));
6580 }
6583 METHOD_ACCESS_FAILURE;
6584 }
6590 /* MS.NET seems to silently convert this to a callvirt */
6593 {
6594 /*
6595 * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
6596 * converts to a callvirt.
6597 *
6598 * tests/bug-515884.il is an example of this behavior
6599 */
6600 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
6602 if (!virtual && cmethod->klass->marshalbyref && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
6604 }
6608 LOAD_ERROR;
6618 LOAD_ERROR;
6628 }
6629 }
6637 INLINE_FAILURE;
6638 CHECK_CFG_EXCEPTION;
6639 }
6643 }
6646 UNVERIFIED;
6653 //g_assert (!virtual || fsig->hasthis);
6658 /*
6659 * We have the `constrained.' prefix opcode.
6660 */
6662 /*
6663 * The type parameter is instantiated as a valuetype,
6664 * but that type doesn't override the method we're
6665 * calling, so we need to box `this'.
6666 */
6669 sp [0] = handle_box (cfg, ins, constrained_call, mono_class_check_context_used (constrained_call));
6670 CHECK_CFG_EXCEPTION;
6674 /*
6675 * The type parameter is instantiated as a reference
6676 * type. We have a managed pointer on the stack, so
6677 * we need to dereference it here.
6678 */
6685 }
6688 UNVERIFIED;
6690 /*
6691 * If the callee is a shared method, then its static cctor
6692 * might not get called after the call was patched.
6693 */
6694 if (cfg->generic_sharing_context && cmethod && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable_impl (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
6697 }
6705 /*
6706 * Pass vtable iff target method might
6707 * be shared, which means that sharing
6708 * is enabled for its class and its
6709 * context is sharable (and it's not a
6710 * generic method).
6711 */
6715 }
6727 }
6735 /* Generic method interface
6736 calls are resolved via a
6737 helper function and don't
6738 need an imt. */
6741 }
6743 /*
6744 * If a shared method calls another
6745 * shared method then the caller must
6746 * have a generic sharing context
6747 * because the magic trampoline
6748 * requires it. FIXME: We shouldn't
6749 * have to force the vtable/mrgctx
6750 * variable here. Instead there
6751 * should be a flag in the cfg to
6752 * request a generic sharing context.
6753 */
6757 }
6767 }
6768 }
6774 /*
6775 * emit_get_rgctx_method () calls mono_class_vtable () so check
6776 * for type load errors before.
6777 */
6780 }
6784 /* !marshalbyref is needed to properly handle generic methods + remoting */
6791 }
6792 }
6800 }
6805 /* Calling virtual generic methods */
6816 /* Prevent inlining of methods that contain indirect calls */
6817 INLINE_FAILURE;
6819 #if MONO_ARCH_HAVE_GENERALIZED_IMT_THUNK && defined(MONO_ARCH_GSHARED_SUPPORTED)
6828 #endif
6829 {
6834 /* FIXME: This should be a managed pointer */
6847 }
6852 CHECK_CFG_EXCEPTION;
6857 }
6859 /*
6860 * Implement a workaround for the inherent races involved in locking:
6861 * Monitor.Enter ()
6862 * try {
6863 * } finally {
6864 * Monitor.Exit ()
6865 * }
6866 * If a thread abort happens between the call to Monitor.Enter () and the start of the
6867 * try block, the Exit () won't be executed, see:
6868 * http://www.bluebytesoftware.com/blog/2007/01/30/MonitorEnterThreadAbortsAndOrphanedLocks.aspx
6869 * To work around this, we extend such try blocks to include the last x bytes
6870 * of the Monitor.Enter () call.
6871 */
6872 if (cmethod && cmethod->klass == mono_defaults.monitor_class && !strcmp (cmethod->name, "Enter") && mono_method_signature (cmethod)->param_count == 1) {
6876 /*
6877 * Only extend try blocks with a finally, to avoid catching exceptions thrown
6878 * from Monitor.Enter like ArgumentNullException.
6879 */
6881 /* Mark this bblock as needing to be extended */
6883 }
6884 }
6886 /* Conversion to a JIT intrinsic */
6887 if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
6892 sp++;
6893 }
6895 CHECK_CFG_EXCEPTION;
6900 }
6902 /* Inlining */
6904 (!virtual || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
6912 /* Prevent inlining of methods that call wrappers */
6913 INLINE_FAILURE;
6916 }
6918 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, dont_inline, always))) {
6924 /* *sp is already set by inline_method */
6925 sp++;
6930 }
6931 }
6935 /* Tail recursion elimination */
6936 if ((cfg->opt & MONO_OPT_TAILC) && *ip == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
6940 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
6941 INLINE_FAILURE;
6943 /* keep it simple */
6947 }
6959 /* skip the CEE_RET, too */
6962 else
6967 }
6968 }
6970 /* Generic sharing */
6971 /* FIXME: only do this for generic methods if
6972 they are not shared! */
6978 INLINE_FAILURE;
6983 /*
6984 * We are compiling a call to a
6985 * generic method from shared code,
6986 * which means that we have to look up
6987 * the method in the rgctx and do an
6988 * indirect call.
6989 */
6990 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
6991 }
6993 /* Indirect calls */
7001 else
7002 /* FIXME: what the hell is this??? */
7006 /* Prevent inlining of methods with indirect calls */
7007 INLINE_FAILURE;
7016 /*
7017 * Instead of emitting an indirect call, emit a direct call
7018 * with the contents of the aotconst as the patch info.
7019 */
7020 ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR, addr->inst_p0, fsig, sp);
7022 } else if (addr->opcode == OP_GOT_ENTRY && addr->inst_right->inst_c1 == MONO_PATCH_INFO_ICALL_ADDR) {
7023 ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR, addr->inst_right->inst_left, fsig, sp);
7027 }
7028 }
7032 CHECK_CFG_EXCEPTION;
7037 }
7039 /* Array methods */
7053 }
7056 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, val->dreg);
7057 if (cfg->gen_write_barriers && val->type == STACK_OBJ && !(val->opcode == OP_PCONST && val->inst_c0 == 0))
7075 }
7077 CHECK_CFG_EXCEPTION;
7082 }
7089 CHECK_CFG_EXCEPTION;
7094 }
7096 /* Tail prefix / tail call optimization */
7098 /* FIXME: Enabling TAILC breaks some inlining/stack trace/etc tests */
7099 /* FIXME: runtime generic context pointer for jumps? */
7100 /* FIXME: handle this for generic sharing eventually */
7104 && !vtable_arg && !cfg->generic_sharing_context && is_supported_tail_call (cfg, method, cmethod, fsig);
7109 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
7110 INLINE_FAILURE;
7112 //printf ("HIT: %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
7114 #ifdef MONO_ARCH_USE_OP_TAIL_CALL
7115 /* Handle tail calls similarly to calls */
7116 call = mono_emit_call_args (cfg, mono_method_signature (cmethod), sp, FALSE, FALSE, TRUE, FALSE);
7117 #else
7123 /*
7124 * We implement tail calls by storing the actual arguments into the
7125 * argument variables, then emitting a CEE_JMP.
7126 */
7128 /* Prevent argument from being register allocated */
7131 }
7132 #endif
7141 CHECK_CFG_EXCEPTION;
7146 // FIXME: Eliminate unreachable epilogs
7148 /*
7149 * OP_TAILCALL has no return value, so skip the CEE_RET if it is
7150 * only reachable from this call.
7151 */
7156 }
7158 /* Common call */
7159 INLINE_FAILURE;
7166 CHECK_CFG_EXCEPTION;
7171 }
7174 /* return from inlined method */
7175 /*
7176 * If in_count == 0, that means the ret is unreachable due to
7177 * being preceeded by a throw. In that case, inline_method () will
7178 * handle setting the return value
7179 * (test case: test_0_inline_throw ()).
7180 */
7185 //g_assert (returnvar != -1);
7188 }
7194 /*
7195 * Place a seq point here too even through the IL stack is not
7196 * empty, so a step over on
7197 * call <FOO>
7198 * ret
7199 * will work correctly.
7200 */
7203 }
7209 if ((method->wrapper_type == MONO_WRAPPER_DYNAMIC_METHOD || method->wrapper_type == MONO_WRAPPER_NONE) && target_type_is_incompatible (cfg, ret_type, *sp))
7210 UNVERIFIED;
7224 }
7226 #ifdef MONO_ARCH_SOFT_FLOAT
7236 }
7237 #else
7239 #endif
7240 }
7241 }
7242 }
7244 UNVERIFIED;
7246 ip++;
7255 ip++;
7265 }
7283 ip++;
7285 ip++;
7295 ip++;
7306 }
7325 UNVERIFIED;
7326 ip ++;
7330 sp--;
7340 }
7347 #if SIZEOF_REGISTER == 4
7349 /* Convert it to OP_LCOMPARE */
7357 }
7358 #endif
7374 }
7388 ip++;
7406 gboolean use_op_switch;
7414 UNVERIFIED;
7429 }
7432 /*
7433 * Link the current bb with the targets as well, so handle_stack_args
7434 * will set their in_stack correctly.
7435 */
7443 }
7457 #ifdef TARGET_ARM
7458 /* ARM implements SWITCH statements differently */
7459 /* FIXME: Make it use the generic implementation */
7462 #endif
7479 else
7482 #if SIZEOF_REGISTER == 8
7483 /* The upper word might not be zero, and we add it to a 64 bit address later */
7485 #endif
7495 }
7497 /* FIXME: Use load_memindex */
7501 }
7505 }
7533 }
7559 if (cfg->gen_write_barriers && *ip == CEE_STIND_REF && method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !((sp [1]->opcode == OP_PCONST) && (sp [1]->inst_p0 == 0)))
7577 /* Use the immediate opcodes if possible */
7586 }
7587 }
7592 ip++;
7617 /* FIXME: Pass opcode to is_inst_imm */
7619 /* Use the immediate opcodes if possible */
7620 if (((sp [1]->opcode == OP_ICONST) || (sp [1]->opcode == OP_I8CONST)) && mono_arch_is_inst_imm (sp [1]->opcode == OP_ICONST ? sp [1]->inst_c0 : sp [1]->inst_l)) {
7627 #if SIZEOF_REGISTER == 8
7629 #else
7632 #endif
7633 }
7634 else
7638 /* Might be followed by an instruction added by ADD_WIDEN_OP */
7641 }
7642 }
7646 ip++;
7663 /* Special case this earlier so we have long constants in the IR */
7668 #if SIZEOF_REGISTER == 8
7671 else
7673 #else
7677 else
7679 #endif
7681 }
7684 }
7685 ip++;
7699 }
7700 ip++;
7712 }
7713 ip++;
7731 CHECK_CFG_EXCEPTION;
7732 ip++;
7742 ip++;
7767 }
7782 /* Optimize the common ldobj+stloc combination */
7797 }
7807 }
7809 /* Optimize the ldobj+stobj combination */
7810 /* The reference case ends up being a load+store anyway */
7811 if (((ip [5] == CEE_STOBJ) && ip_in_bb (cfg, bblock, ip + 5) && read32 (ip + 6) == token) && !generic_class_is_reference_type (cfg, klass)) {
7814 sp --;
7821 }
7830 }
7840 }
7852 }
7863 /*
7864 * Avoid relocations in AOT and save some space by using a
7865 * version of helper_ldstr specialized to mscorlib.
7866 */
7870 /* Avoid creating the string object */
7874 }
7875 }
7876 else
7881 }
7887 OUT_OF_MEMORY_FAILURE;
7891 }
7892 }
7893 }
7895 sp++;
7901 MonoInst this_ins;
7909 LOAD_ERROR;
7912 LOAD_ERROR;
7917 LOAD_ERROR;
7924 INLINE_FAILURE;
7925 CHECK_CFG_EXCEPTION;
7928 }
7930 if (cfg->generic_sharing_context && cmethod && cmethod->klass != method->klass && cmethod->klass->generic_class && mono_method_is_generic_sharable_impl (cmethod, TRUE) && mono_class_needs_cctor_run (cmethod->klass, method)) {
7933 }
7952 }
7953 }
7954 }
7959 /*
7960 * Generate smaller code for the common newobj <exception> instruction in
7961 * argument checking code.
7962 */
7989 }
7994 }
7996 /* move the args to allow room for 'this' in the first position */
8000 }
8002 /* check_call_signature () requires sp[0] to be set */
8006 UNVERIFIED;
8016 /* Avoid varargs in the common case */
8023 else
8028 /* we simply pass a null pointer */
8030 /* now call the string ctor */
8042 /*
8043 * The code generated by mini_emit_virtual_call () expects
8044 * iargs [0] to be a boxed instance, but luckily the vcall
8045 * will be transformed into a normal call there.
8046 */
8055 /*
8056 * TypeInitializationExceptions thrown from the mono_runtime_class_init
8057 * call in mono_jit_runtime_invoke () can abort the finalizer thread.
8058 * As a workaround, we call class cctors before allocating objects.
8059 */
8060 if (mini_field_access_needs_cctor_run (cfg, method, vtable) && !(g_slist_find (class_inits, vtable))) {
8061 mono_emit_abs_call (cfg, MONO_PATCH_INFO_CLASS_INIT, vtable->klass, helper_sig_class_init_trampoline, NULL);
8063 printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
8065 }
8069 }
8075 /* Now call the actual ctor */
8076 /* Avoid virtual calls to ctors if possible */
8081 if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
8085 sp++;
8086 }
8088 CHECK_CFG_EXCEPTION;
8095 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, dont_inline, FALSE))) {
8101 INLINE_FAILURE;
8103 }
8114 INLINE_FAILURE;
8117 }
8118 }
8121 /* Valuetype */
8125 }
8126 else
8132 }
8141 UNVERIFIED;
8146 if (!context_used && mini_class_has_reference_variant_generic_argument (klass, context_used)) {
8150 /* obj */
8153 /* klass */
8156 /* inline cache*/
8157 /*FIXME AOT support*/
8160 else
8163 /*The wrapper doesn't inline well so the bloat of inlining doesn't pay off.*/
8167 } else if (!context_used && (klass->marshalbyref || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
8177 CHECK_CFG_EXCEPTION;
8187 }
8190 CHECK_CFG_EXCEPTION;
8194 }
8204 UNVERIFIED;
8209 if (!context_used && mini_class_has_reference_variant_generic_argument (klass, context_used)) {
8213 /* obj */
8216 /* klass */
8219 /* inline cache*/
8220 /*FIXME AOT support*/
8226 } else if (!context_used && (klass->marshalbyref || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
8236 CHECK_CFG_EXCEPTION;
8246 }
8249 CHECK_CFG_EXCEPTION;
8253 }
8255 }
8270 /* CASTCLASS FIXME kill this huge slice of duplicated code*/
8271 if (!context_used && mini_class_has_reference_variant_generic_argument (klass, context_used)) {
8275 /* obj */
8278 /* klass */
8281 /* inline cache*/
8282 /*FIXME AOT support*/
8285 else
8288 /*The wrapper doesn't inline well so the bloat of inlining doesn't pay off.*/
8292 } else if (!context_used && (klass->marshalbyref || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
8302 CHECK_CFG_EXCEPTION;
8313 CHECK_CFG_EXCEPTION;
8317 }
8319 }
8326 }
8328 /* UNBOX */
8334 /* LDOBJ */
8340 }
8361 }
8364 UNVERIFIED;
8366 UNVERIFIED;
8367 /* frequent check in generic code: box (struct), brtrue */
8369 // FIXME: LLVM can't handle the inconsistent bb linking
8383 printf ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
8385 }
8391 ip++;
8393 ip++;
8398 ip++;
8404 }
8406 /*
8407 * We need to link both bblocks, since it is needed for handling stack
8408 * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
8409 * Branching to only one of them would lead to inconsistencies, so
8410 * generate an ICONST+BRTRUE, the branch opts will get rid of them.
8411 */
8422 }
8431 /* The JIT can't eliminate the iconst+compare */
8435 }
8439 }
8443 CHECK_CFG_EXCEPTION;
8447 }
8471 }
8475 }
8481 guint foffset;
8489 }
8491 UNVERIFIED;
8493 UNVERIFIED;
8499 }
8502 }
8504 LOAD_ERROR;
8506 FIELD_ACCESS_FAILURE;
8509 /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
8510 any visible *instance* field (in fact there's a single case for a static field in Marshal) XXX
8511 if (mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR)
8512 ensure_method_is_allowed_to_access_field (cfg, method, field, bblock, ip);
8513 */
8518 UNVERIFIED;
8519 if ((klass->marshalbyref && !MONO_CHECK_THIS (sp [0])) || klass->contextbound || klass == mono_defaults.marshalbyrefobject_class) {
8533 CHECK_CFG_EXCEPTION;
8542 }
8552 if (cfg->gen_write_barriers && mini_type_to_stind (cfg, field->type) == CEE_STIND_REF && !(sp [1]->opcode == OP_PCONST && sp [1]->inst_c0 == 0)) {
8553 /* insert call to write barrier */
8560 }
8563 }
8567 }
8569 if ((klass->marshalbyref && !MONO_CHECK_THIS (sp [0])) || klass->contextbound || klass == mono_defaults.marshalbyrefobject_class) {
8570 MonoMethod *wrapper = (*ip == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
8576 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
8580 CHECK_CFG_EXCEPTION;
8592 }
8597 /* Have to compute the address of the variable */
8602 else
8607 }
8613 }
8631 }
8632 }
8636 }
8642 gboolean is_special_static;
8651 }
8652 else
8655 LOAD_ERROR;
8658 FIELD_ACCESS_FAILURE;
8660 /* if the class is Critical then transparent code cannot access it's fields */
8664 /*
8665 * We can only support shared generic static
8666 * field access on architectures where the
8667 * trampoline code has been extended to handle
8668 * the generic class init.
8669 */
8670 #ifndef MONO_ARCH_VTABLE_REG
8672 #endif
8681 /* The special_static_fields field is init'd in mono_class_vtable, so it needs
8682 * to be called here.
8683 */
8687 }
8695 /* Generate IR to compute the field address */
8696 if (is_special_static && ((gsize)addr & 0x80000000) == 0 && mono_get_thread_intrinsic (cfg) && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
8697 /*
8698 * Fast access to TLS data
8699 * Inline version of get_thread_static_data () in
8700 * threads.c.
8701 */
8702 guint32 offset;
8706 // offset &= 0x7fffffff;
8707 // idx = (offset >> 24) - 1;
8708 // return ((char*) thread->static_data [idx]) + (offset & 0xffffff);
8713 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, G_STRUCT_OFFSET (MonoInternalThread, static_data));
8718 /* For TLS variables, this will return the TLS offset */
8741 }
8754 }
8759 /*
8760 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
8761 method->klass->name_space, method->klass->name, method->name,
8762 depth, field->offset);
8763 */
8768 /*
8769 * The pointer we're computing here is
8770 *
8771 * super_info.static_data + field->offset
8772 */
8781 }
8794 if (mini_field_access_needs_cctor_run (cfg, method, vtable) && !(g_slist_find (class_inits, vtable))) {
8795 mono_emit_abs_call (cfg, MONO_PATCH_INFO_CLASS_INIT, vtable->klass, helper_sig_class_init_trampoline, NULL);
8797 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
8802 /* This makes so that inline cannot trigger */
8803 /* .cctors: too many apps depend on them */
8804 /* running with a specific order... */
8806 INLINE_FAILURE;
8811 }
8812 }
8813 }
8818 else
8824 }
8825 }
8827 /* Generate IR to do the actual load/store operation */
8836 sp--;
8847 }
8854 }
8855 /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
8861 sp++;
8865 sp++;
8870 sp++;
8874 sp++;
8879 sp++;
8883 sp++;
8891 sp++;
8901 sp++;
8904 }
8909 sp++;
8917 }
8918 }
8929 }
8930 }
8934 }
8942 /* FIXME: should check item at sp [1] is compatible with the type of the store. */
8946 /* insert call to write barrier */
8948 }
8954 /*
8955 * Array opcodes
8956 */
8961 guint32 field_token;
8982 }
8987 /* FIXME: we cannot get a managed
8988 allocator because we can't get the
8989 open generic class's vtable. We
8990 have the same problem in
8991 handle_alloc(). This
8992 needs to be solved so that we can
8993 have managed allocs of shared
8994 generic classes. */
8995 /*
8996 MonoVTable *array_class_vtable = mono_class_vtable (cfg->domain, array_class);
8997 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class_vtable, 1);
8998 */
9001 /* FIXME: Decompose later to help abcrem */
9003 /* vtable */
9006 /* array len */
9011 else
9015 /* Decompose now to avoid problems with references to the domainvar */
9024 /* Decompose later since it is needed by abcrem */
9039 /* Needed so mono_emit_load_get_addr () gets called */
9041 }
9042 }
9049 /*
9050 * we inline/optimize the initialization sequence if possible.
9051 * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
9052 * for small sizes open code the memcpy
9053 * ensure the rva field is big enough
9054 */
9055 if ((cfg->opt & MONO_OPT_INTRINS) && ip + 6 < end && ip_in_bb (cfg, bblock, ip + 6) && (len_ins->opcode == OP_ICONST) && (data_ptr = initialize_array_data (method, cfg->compile_aot, ip, klass, len_ins->inst_c0, &data_size, &field_token))) {
9060 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, G_STRUCT_OFFSET (MonoArray, vector));
9062 EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
9065 }
9069 }
9072 }
9077 UNVERIFIED;
9083 /* This flag will be inherited by the decomposition */
9088 ip ++;
9096 UNVERIFIED;
9102 /* we need to make sure that this array is exactly the type it needs
9103 * to be for correctness. the wrappers are lax with their usage
9104 * so we need to ignore them here
9105 */
9110 }
9140 }
9141 else
9145 UNVERIFIED;
9152 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + G_STRUCT_OFFSET (MonoArray, vector);
9159 }
9163 else
9166 }
9189 }
9190 else
9194 UNVERIFIED;
9196 /* storing a NULL doesn't need any of the complex checks in stelemref */
9208 UNVERIFIED;
9210 UNVERIFIED;
9221 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + G_STRUCT_OFFSET (MonoArray, vector);
9228 }
9229 }
9233 else
9237 }
9252 }
9270 // FIXME:
9273 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
9283 // FIXME:
9288 }
9289 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, G_STRUCT_OFFSET (MonoTypedRef, value));
9294 }
9309 loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
9317 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
9318 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, G_STRUCT_OFFSET (MonoClass, byval_arg));
9319 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
9325 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
9326 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, G_STRUCT_OFFSET (MonoClass, byval_arg));
9327 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
9329 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
9330 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, klass), klass);
9331 }
9332 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
9340 }
9342 gpointer handle;
9356 }
9359 }
9361 LOAD_ERROR;
9366 /* This case handles ldtoken
9367 of an open type, like for
9368 typeof(Gen<>). */
9371 /* If we get a MONO_TYPE_CLASS
9372 then we need to provide the
9373 open type, not an
9374 instantiation of it. */
9377 else
9383 else
9385 }
9395 else
9409 }
9430 /* Special case for static synchronized wrappers */
9431 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
9433 /* FIXME: n is not a normal token */
9436 }
9439 }
9442 }
9455 MONO_RGCTX_INFO_TYPE);
9464 }
9469 }
9473 }
9474 }
9479 }
9485 ip++;
9498 ip++;
9501 /*
9502 * Control will leave the method so empty the stack, otherwise
9503 * the next basic block will start with a nonempty stack.
9504 */
9506 sp--;
9507 }
9519 }
9521 /* empty the stack */
9523 sp--;
9524 }
9526 /*
9527 * If this leave statement is in a catch block, check for a
9528 * pending exception, and rethrow it if necessary.
9529 * We avoid doing this in runtime invoke wrappers, since those are called
9530 * by native code which excepts the wrapper to catch all exceptions.
9531 */
9535 /*
9536 * Use <= in the final comparison to handle clauses with multiple
9537 * leave statements, like in bug #78024.
9538 * The ordering of the exception clauses guarantees that we find the
9539 * innermost clause.
9540 */
9541 if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && (clause->flags == MONO_EXCEPTION_CLAUSE_NONE) && (ip - header->code + ((*ip == CEE_LEAVE) ? 5 : 2)) <= (clause->handler_offset + clause->handler_len) && method->wrapper_type != MONO_WRAPPER_RUNTIME_INVOKE) {
9545 /*
9546 MonoInst *load;
9548 NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
9549 */
9555 /*
9556 * Currently, we always rethrow the abort exception, despite the
9557 * fact that this is not correct. See thread6.cs for an example.
9558 * But propagating the abort exception is more important than
9559 * getting the sematics right.
9560 */
9567 }
9568 }
9587 /*
9588 * Link the finally bblock with the target, since it will
9589 * conceptually branch there.
9590 * FIXME: Have to link the bblock containing the endfinally.
9591 */
9594 }
9595 }
9597 }
9608 else
9612 }
9614 /*
9615 * Mono specific opcodes
9616 */
9624 gpointer func;
9643 }
9645 gpointer ptr;
9652 if (cfg->compile_aot && (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) && (strstr (method->name, "__icall_wrapper_") == method->name)) {
9662 /* Will be transformed into an AOTCONST later */
9667 }
9668 }
9669 /* FIXME: Generalize this */
9675 }
9680 /* Can't embed random pointers into AOT code */
9683 }
9686 gpointer ptr;
9700 }
9704 }
9711 // FIXME:
9717 }
9734 }
9747 /*
9748 * Similar to LDOBJ, but instead load the unmanaged
9749 * representation of the vtype to the stack.
9750 */
9759 {
9774 }
9777 /*
9778 * Same as RET, but return the native representation of a vtype
9779 * to the caller.
9780 */
9796 }
9800 UNVERIFIED;
9809 }
9820 else
9826 }
9829 #ifdef MONO_ARCH_HAVE_LMF_OPS
9833 #endif
9863 /* It would be easier to call a trampoline, but that would put an
9864 * extra frame on the stack, confusing exception handling. So
9865 * implement it inline using an opcode for now.
9866 */
9869 cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9870 /* prevent it from being register allocated */
9872 }
9874 /* Has to use a call inst since it local regalloc expects it */
9882 #ifdef MONO_ARCH_DYN_CALL_PARAM_AREA
9884 #endif
9890 }
9894 }
9896 }
9902 /* somewhat similar to LDTOKEN */
9905 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
9916 }
9924 /*
9925 * The following transforms:
9926 * CEE_CEQ into OP_CEQ
9927 * CEE_CGT into OP_CGT
9928 * CEE_CGT_UN into OP_CGT_UN
9929 * CEE_CLT into OP_CLT
9930 * CEE_CLT_UN into OP_CLT_UN
9931 */
9940 if ((sp [0]->type == STACK_I8) || ((SIZEOF_VOID_P == 8) && ((sp [0]->type == STACK_PTR) || (sp [0]->type == STACK_OBJ) || (sp [0]->type == STACK_MP))))
9944 else
9952 /*
9953 * The backends expect the fceq opcodes to do the
9954 * comparison too.
9955 */
9959 }
9964 }
9968 gboolean needs_static_rgctx_invoke;
9975 LOAD_ERROR;
9987 METHOD_ACCESS_FAILURE;
9991 INLINE_FAILURE;
9992 CHECK_CFG_EXCEPTION;
9995 }
9997 /*
9998 * Optimize the common case of ldftn+delegate creation
9999 */
10000 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, bblock, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
10001 MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
10009 LOAD_ERROR;
10017 /*LAME IMPL: We must not add a null check for virtual invoke delegates.*/
10018 if (mono_method_signature (invoke)->param_count == mono_method_signature (cmethod)->param_count) {
10021 }
10022 }
10024 #if defined(MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE)
10025 /* FIXME: SGEN support */
10029 g_print ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
10030 sp --;
10032 CHECK_CFG_EXCEPTION;
10034 sp ++;
10036 }
10037 #endif
10038 }
10039 }
10048 }
10057 LOAD_ERROR;
10065 INLINE_FAILURE;
10066 CHECK_CFG_EXCEPTION;
10069 }
10079 else
10085 }
10112 UNVERIFIED;
10136 }
10142 }
10150 UNVERIFIED;
10159 UNVERIFIED;
10161 /*
10162 * Inlining this into a loop in a parent could lead to
10163 * stack overflows which is different behavior than the
10164 * non-inlined case, thus disable inlining in this case.
10165 */
10188 UNVERIFIED;
10200 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
10204 }
10205 }
10208 UNVERIFIED;
10211 }
10214 /* FIXME: record alignment? we can assume 1 for now */
10225 /* Can't inline tail calls at this time */
10238 else
10248 else
10259 if ((ip [1] == CEE_CPBLK) && (cfg->opt & MONO_OPT_INTRINS) && (sp [2]->opcode == OP_ICONST) && ((n = sp [2]->inst_c0) <= sizeof (gpointer) * 5)) {
10261 } else if ((ip [1] == CEE_INITBLK) && (cfg->opt & MONO_OPT_INTRINS) && (sp [2]->opcode == OP_ICONST) && ((n = sp [2]->inst_c0) <= sizeof (gpointer) * 5) && (sp [1]->opcode == OP_ICONST) && (sp [1]->inst_c0 == 0)) {
10262 /* emit_memset only works when val == 0 */
10274 }
10275 }
10279 }
10286 /* we ignore the no-nullcheck for now since we
10287 * really do it explicitly only when doing callvirt->call
10288 */
10297 if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
10300 }
10301 }
10320 }
10322 guint32 align;
10328 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !method->klass->image->dynamic && !generic_context) {
10336 }
10341 }
10348 // FIXME:
10351 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
10353 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, G_STRUCT_OFFSET (MonoTypedRef, type));
10357 }
10368 UNVERIFIED;
10372 UNVERIFIED;
10373 }
10375 }
10378 UNVERIFIED;
10382 UNVERIFIED;
10383 }
10384 }
10386 UNVERIFIED;
10399 }
10403 }
10406 }
10408 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
10410 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
10412 #endif
10447 }
10448 }
10449 }
10452 /* Emit initialization for ref vars */
10453 // FIXME: Avoid duplication initialization for IL locals.
10459 }
10460 }
10462 /* Add a sequence point for method entry/exit events */
10468 }
10480 }
10481 }
10489 /* Method is too large */
10497 }
10506 exception_exit:
10510 inline_failure:
10513 load_error:
10517 unverified:
10521 cleanup:
10527 }
10529 static int
10531 {
10545 }
10548 }
10552 int
10554 {
10616 #if defined(TARGET_X86) || defined (TARGET_AMD64)
10621 #endif
10622 #if defined(TARGET_AMD64)
10625 #endif
10636 }
10639 }
10641 static int
10643 {
10669 }
10672 }
10674 static int
10676 {
10695 }
10698 }
10700 int
10702 {
10703 // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
10704 #if defined(TARGET_X86) || defined(TARGET_AMD64)
10716 #if SIZEOF_REGISTER == 8
10719 #endif
10720 }
10721 #endif
10724 }
10728 {
10729 #if defined(TARGET_X86)
10761 }
10762 #endif
10764 #if defined(TARGET_AMD64)
10765 if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
10816 }
10817 #endif
10820 }
10824 {
10825 #if defined(TARGET_X86) || defined(TARGET_AMD64)
10833 }
10834 #endif
10837 }
10841 {
10842 #ifdef TARGET_X86
10843 /* FIXME: This has sign extension issues */
10844 /*
10845 if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
10846 return OP_X86_COMPARE_MEMBASE8_IMM;
10847 */
10849 if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
10861 }
10862 #endif
10864 #ifdef TARGET_AMD64
10865 /* FIXME: This has sign extension issues */
10866 /*
10867 if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
10868 return OP_X86_COMPARE_MEMBASE8_IMM;
10869 */
10873 #ifdef __mono_ilp32__
10875 #else
10877 #endif
10880 /* FIXME: This only works for 32 bit immediates
10881 case OP_COMPARE_IMM:
10882 case OP_LCOMPARE_IMM:
10883 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
10884 return OP_AMD64_COMPARE_MEMBASE_IMM;
10885 */
10892 #ifdef __mono_ilp32__
10896 #else
10898 #endif
10905 }
10906 #endif
10909 }
10913 {
10914 #ifdef TARGET_X86
10915 if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
10932 }
10933 #endif
10935 #ifdef TARGET_AMD64
10936 #ifdef __mono_ilp32__
10937 if ((load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE) || (load_opcode == OP_LOAD_MEMBASE) ) {
10938 #else
10940 #endif
10954 }
10955 #ifdef __mono_ilp32__
10957 #else
10959 #endif
10974 }
10975 }
10976 #endif
10979 }
10981 int
10983 {
10985 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
10990 #endif
10991 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
10997 #endif
11000 }
11001 }
11003 #ifndef DISABLE_JIT
11005 /**
11006 * mono_handle_global_vregs:
11007 *
11008 * Make vregs used in more than one bblock 'global', i.e. allocate a variable
11009 * for them.
11010 */
11011 void
11013 {
11020 #ifdef MONO_ARCH_SIMD_INTRINSICS
11023 #endif
11025 /* Find local vregs used in more than one bb */
11037 gint32 prev_bb;
11067 }
11069 #if SIZEOF_REGISTER == 4
11070 /* In the LLVM case, the long opcodes are not decomposed */
11072 /*
11073 * Since some instructions reference the original long vreg,
11074 * and some reference the two component vregs, it is quite hard
11075 * to determine when it needs to be global. So be conservative.
11076 */
11078 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
11082 }
11084 /*
11085 * Make the component vregs volatile since the optimizations can
11086 * get confused otherwise.
11087 */
11090 }
11091 #endif
11097 /* 0 is a valid block num */
11100 if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
11110 mono_compile_create_var_for_vreg (cfg, &mono_defaults.object_class->byval_arg, OP_LOCAL, vreg);
11111 else
11115 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
11118 mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
11125 }
11126 }
11128 /* Flag as having been used in more than one bb */
11130 }
11131 }
11132 }
11133 }
11135 /* If a variable is used in only one bblock, convert it into a local vreg */
11146 #if SIZEOF_REGISTER == 8
11148 #endif
11149 #if !defined(TARGET_X86) && !defined(MONO_ARCH_SOFT_FLOAT)
11150 /* Enabling this screws up the fp stack on x86 */
11152 #endif
11153 /* Arguments are implicitly global */
11154 /* Putting R4 vars into registers doesn't work currently */
11155 if ((var->opcode != OP_ARG) && (var != cfg->ret) && !(var->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)) && (vreg_to_bb [var->dreg] != -1) && (var->klass->byval_arg.type != MONO_TYPE_R4) && !cfg->disable_vreg_to_lvreg) {
11156 /*
11157 * Make that the variable's liveness interval doesn't contain a call, since
11158 * that would cause the lvreg to be spilled, making the whole optimization
11159 * useless.
11160 */
11161 /* This is too slow for JIT compilation */
11162 #if 0
11182 }
11183 }
11188 ins_index ++;
11189 }
11193 }
11194 #endif
11200 }
11202 }
11203 }
11205 /*
11206 * Compress the varinfo and vars tables so the liveness computation is faster and
11207 * takes up less space.
11208 */
11220 #if SIZEOF_REGISTER == 4
11222 /* Modify the two component vars too */
11229 }
11230 #endif
11231 }
11232 pos ++;
11233 }
11234 }
11238 }
11240 /**
11241 * mono_spill_global_vars:
11242 *
11243 * Generate spill code for variables which are not allocated to registers,
11244 * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
11245 * code is generated which could be optimized by the local optimization passes.
11246 */
11247 void
11249 {
11265 /* FIXME: Move this function to mini.c */
11269 #ifdef MONO_ARCH_SIMD_INTRINSICS
11271 #endif
11273 #if SIZEOF_REGISTER == 4
11274 /* Create MonoInsts for longs */
11301 }
11304 }
11305 }
11306 }
11307 #endif
11310 /* registers need liveness info even for !non refs */
11316 }
11317 }
11319 /* FIXME: widening and truncation */
11321 /*
11322 * As an optimization, when a variable allocated to the stack is first loaded into
11323 * an lvreg, we will remember the lvreg and use it the next time instead of loading
11324 * the variable again.
11325 */
11331 /*
11332 * These arrays contain the first and last instructions accessing a given
11333 * variable.
11334 * Since we emit bblocks in the same order we process them here, and we
11335 * don't split live ranges, these will precisely describe the live range of
11336 * the variable, i.e. the instruction range where a valid value can be found
11337 * in the variables location.
11338 * The live range is computed using the liveness info computed by the liveness pass.
11339 * We can't use vmv->range, since that is an abstract live range, and we need
11340 * one which is instruction precise.
11341 * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
11342 */
11343 /* FIXME: Only do this if debugging info is requested */
11349 /* Add spill loads/stores */
11356 /* Clear vreg_to_lvreg array */
11374 /*
11375 * We handle LDADDR here as well, since it can only be decomposed
11376 * when variable addresses are known.
11377 */
11382 /* Happens on SPARC/S390 where vtypes are passed by reference */
11387 }
11393 NOT_IMPLEMENTED;
11400 }
11404 }
11409 }
11411 /*
11412 * Store opcodes have destbasereg in the dreg, but in reality, it is an
11413 * src register.
11414 * FIXME:
11415 */
11429 else
11439 }
11441 /***************/
11442 /* DREG */
11443 /***************/
11445 g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
11459 } else if ((ins->dreg == ins->sreg1) && (spec [MONO_INST_DEST] == 'i') && (spec [MONO_INST_SRC1] == 'i') && !vreg_to_lvreg [ins->dreg] && (op_to_op_dest_membase (store_opcode, ins->opcode) != -1)) {
11460 /*
11461 * Instead of emitting a load+store, use a _membase opcode.
11462 */
11472 }
11475 guint32 lvreg;
11481 /* Invalidate any previous lvreg for this vreg */
11489 }
11494 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET, ins->dreg + 1);
11496 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET, ins->dreg + 2);
11499 }
11503 /* Try to fuse the store into the instruction itself */
11504 /* FIXME: Add more instructions */
11505 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
11511 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE))) {
11529 // FIXME: The backends expect the base reg to be in inst_basereg
11536 /* printf ("INS: "); mono_print_ins (ins); */
11537 /* Create a store instruction */
11538 NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
11540 /* Insert it after the instruction */
11545 /*
11546 * We can't assign ins->dreg to var->dreg here, since the
11547 * sregs could use it. So set a flag, and do it after
11548 * the sregs.
11549 */
11550 if ((!MONO_ARCH_USE_FPSTACK || ((store_opcode != OP_STORER8_MEMBASE_REG) && (store_opcode != OP_STORER4_MEMBASE_REG))) && !((var)->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)))
11552 }
11553 }
11554 }
11559 }
11567 }
11568 }
11570 /************/
11571 /* SREGS */
11572 /************/
11583 guint32 load_opcode;
11587 //mono_inst_set_src_registers (ins, sregs);
11591 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
11595 /* var->dreg is a hreg */
11598 }
11601 }
11612 /* The variable is already loaded to an lvreg */
11616 //mono_inst_set_src_registers (ins, sregs);
11618 }
11620 /* Try to fuse the load into the instruction */
11624 //mono_inst_set_src_registers (ins, sregs);
11629 //mono_inst_set_src_registers (ins, sregs);
11636 //printf ("%d ", srcindex); mono_print_ins (ins);
11640 if ((!MONO_ARCH_USE_FPSTACK || ((load_opcode != OP_LOADR8_MEMBASE) && (load_opcode != OP_LOADR4_MEMBASE))) && !((var)->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT)) && !no_lvreg) {
11642 /*
11643 * sreg refers to the value loaded by the load
11644 * emitted below, but we need to use ins->dreg
11645 * since it refers to the store emitted earlier.
11646 */
11648 }
11653 }
11654 }
11657 //mono_inst_set_src_registers (ins, sregs);
11660 NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, sreg + 2, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
11662 NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, sreg + 1, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
11665 }
11667 #if SIZEOF_REGISTER == 4
11669 #endif
11673 }
11674 }
11679 }
11681 if (cfg->compute_gc_maps && var->dreg < orig_next_vreg && (var->flags & MONO_INST_GC_TRACK)) {
11687 }
11688 }
11689 }
11698 }
11704 }
11707 /* Clear vreg_to_lvreg array */
11714 }
11718 }
11720 /* Extend the live range based on the liveness info */
11726 /* The liveness info is incomplete */
11730 /* Live from at least the first ins of this bb */
11733 }
11736 /* Live at least until the last ins of this bb */
11739 }
11740 }
11741 }
11742 }
11744 #ifdef MONO_ARCH_HAVE_LIVERANGE_OPS
11745 /*
11746 * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
11747 * by storing the current native offset into MonoMethodVar->live_range_start/end.
11748 */
11759 }
11766 else
11768 }
11769 }
11770 }
11771 #endif
11777 }
11779 /**
11780 * FIXME:
11781 * - use 'iadd' instead of 'int_add'
11782 * - handling ovf opcodes: decompose in method_to_ir.
11783 * - unify iregs/fregs
11784 * -> partly done, the missing parts are:
11785 * - a more complete unification would involve unifying the hregs as well, so
11786 * code wouldn't need if (fp) all over the place. but that would mean the hregs
11787 * would no longer map to the machine hregs, so the code generators would need to
11788 * be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
11789 * wouldn't work any more. Duplicating the code in mono_local_regalloc () into
11790 * fp/non-fp branches speeds it up by about 15%.
11791 * - use sext/zext opcodes instead of shifts
11792 * - add OP_ICALL
11793 * - get rid of TEMPLOADs if possible and use vregs instead
11794 * - clean up usage of OP_P/OP_ opcodes
11795 * - cleanup usage of DUMMY_USE
11796 * - cleanup the setting of ins->type for MonoInst's which are pushed on the
11797 * stack
11798 * - set the stack type and allocate a dreg in the EMIT_NEW macros
11799 * - get rid of all the <foo>2 stuff when the new JIT is ready.
11800 * - make sure handle_stack_args () is called before the branch is emitted
11801 * - when the new IR is done, get rid of all unused stuff
11802 * - COMPARE/BEQ as separate instructions or unify them ?
11803 * - keeping them separate allows specialized compare instructions like
11804 * compare_imm, compare_membase
11805 * - most back ends unify fp compare+branch, fp compare+ceq
11806 * - integrate mono_save_args into inline_method
11807 * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
11808 * - handle long shift opts on 32 bit platforms somehow: they require
11809 * 3 sregs (2 for arg1 and 1 for arg2)
11810 * - make byref a 'normal' type.
11811 * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
11812 * variable if needed.
11813 * - do not start a new IL level bblock when cfg->cbb is changed by a function call
11814 * like inline_method.
11815 * - remove inlining restrictions
11816 * - fix LNEG and enable cfold of INEG
11817 * - generalize x86 optimizations like ldelema as a peephole optimization
11818 * - add store_mem_imm for amd64
11819 * - optimize the loading of the interruption flag in the managed->native wrappers
11820 * - avoid special handling of OP_NOP in passes
11821 * - move code inserting instructions into one function/macro.
11822 * - try a coalescing phase after liveness analysis
11823 * - add float -> vreg conversion + local optimizations on !x86
11824 * - figure out how to handle decomposed branches during optimizations, ie.
11825 * compare+branch, op_jump_table+op_br etc.
11826 * - promote RuntimeXHandles to vregs
11827 * - vtype cleanups:
11828 * - add a NEW_VARLOADA_VREG macro
11829 * - the vtype optimizations are blocked by the LDADDR opcodes generated for
11830 * accessing vtype fields.
11831 * - get rid of I8CONST on 64 bit platforms
11832 * - dealing with the increase in code size due to branches created during opcode
11833 * decomposition:
11834 * - use extended basic blocks
11835 * - all parts of the JIT
11836 * - handle_global_vregs () && local regalloc
11837 * - avoid introducing global vregs during decomposition, like 'vtable' in isinst
11838 * - sources of increase in code size:
11839 * - vtypes
11840 * - long compares
11841 * - isinst and castclass
11842 * - lvregs not allocated to global registers even if used multiple times
11843 * - call cctors outside the JIT, to make -v output more readable and JIT timings more
11844 * meaningful.
11845 * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
11846 * - add all micro optimizations from the old JIT
11847 * - put tree optimizations into the deadce pass
11848 * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
11849 * specific function.
11850 * - unify the float comparison opcodes with the other comparison opcodes, i.e.
11851 * fcompare + branchCC.
11852 * - create a helper function for allocating a stack slot, taking into account
11853 * MONO_CFG_HAS_SPILLUP.
11854 * - merge r68207.
11855 * - merge the ia64 switch changes.
11856 * - optimize mono_regstate2_alloc_int/float.
11857 * - fix the pessimistic handling of variables accessed in exception handler blocks.
11858 * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
11859 * parts of the tree could be separated by other instructions, killing the tree
11860 * arguments, or stores killing loads etc. Also, should we fold loads into other
11861 * instructions if the result of the load is used multiple times ?
11862 * - make the REM_IMM optimization in mini-x86.c arch-independent.
11863 * - LAST MERGE: 108395.
11864 * - when returning vtypes in registers, generate IR and append it to the end of the
11865 * last bb instead of doing it in the epilog.
11866 * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
11867 */
11869 /*
11871 NOTES
11872 -----
11874 - When to decompose opcodes:
11875 - earlier: this makes some optimizations hard to implement, since the low level IR
11876 no longer contains the neccessary information. But it is easier to do.
11877 - later: harder to implement, enables more optimizations.
11878 - Branches inside bblocks:
11879 - created when decomposing complex opcodes.
11880 - branches to another bblock: harmless, but not tracked by the branch
11881 optimizations, so need to branch to a label at the start of the bblock.
11882 - branches to inside the same bblock: very problematic, trips up the local
11883 reg allocator. Can be fixed by spitting the current bblock, but that is a
11884 complex operation, since some local vregs can become global vregs etc.
11885 - Local/global vregs:
11886 - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
11887 local register allocator.
11888 - global vregs: used in more than one bblock. Have an associated MonoMethodVar
11889 structure, created by mono_create_var (). Assigned to hregs or the stack by
11890 the global register allocator.
11891 - When to do optimizations like alu->alu_imm:
11892 - earlier -> saves work later on since the IR will be smaller/simpler
11893 - later -> can work on more instructions
11894 - Handling of valuetypes:
11895 - When a vtype is pushed on the stack, a new temporary is created, an
11896 instruction computing its address (LDADDR) is emitted and pushed on
11897 the stack. Need to optimize cases when the vtype is used immediately as in
11898 argument passing, stloc etc.
11899 - Instead of the to_end stuff in the old JIT, simply call the function handling
11900 the values on the stack before emitting the last instruction of the bb.
11901 */