| blob | 2f51b2e4431550d6cc23f6bc084d256ae4b16385 |
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/loader.h>
34 #include <mono/metadata/tabledefs.h>
35 #include <mono/metadata/class.h>
36 #include <mono/metadata/object.h>
37 #include <mono/metadata/exception.h>
38 #include <mono/metadata/opcodes.h>
39 #include <mono/metadata/mono-endian.h>
40 #include <mono/metadata/tokentype.h>
41 #include <mono/metadata/tabledefs.h>
42 #include <mono/metadata/marshal.h>
43 #include <mono/metadata/debug-helpers.h>
44 #include <mono/metadata/mono-debug.h>
45 #include <mono/metadata/gc-internal.h>
46 #include <mono/metadata/security-manager.h>
47 #include <mono/metadata/threads-types.h>
48 #include <mono/metadata/security-core-clr.h>
49 #include <mono/metadata/monitor.h>
50 #include <mono/metadata/profiler-private.h>
51 #include <mono/metadata/profiler.h>
52 #include <mono/utils/mono-compiler.h>
53 #include <mono/metadata/mono-basic-block.h>
64 #define BRANCH_COST 100
65 #define INLINE_LENGTH_LIMIT 20
66 #define INLINE_FAILURE do {\
67 if ((cfg->method != method) && (method->wrapper_type == MONO_WRAPPER_NONE))\
68 goto inline_failure;\
69 } while (0)
70 #define CHECK_CFG_EXCEPTION do {\
71 if (cfg->exception_type != MONO_EXCEPTION_NONE)\
72 goto exception_exit;\
73 } while (0)
74 #define METHOD_ACCESS_FAILURE do { \
75 char *method_fname = mono_method_full_name (method, TRUE); \
76 char *cil_method_fname = mono_method_full_name (cil_method, TRUE); \
77 cfg->exception_type = MONO_EXCEPTION_METHOD_ACCESS; \
78 cfg->exception_message = g_strdup_printf ("Method `%s' is inaccessible from method `%s'\n", cil_method_fname, method_fname); \
79 g_free (method_fname); \
80 g_free (cil_method_fname); \
81 goto exception_exit; \
82 } while (0)
83 #define FIELD_ACCESS_FAILURE do { \
84 char *method_fname = mono_method_full_name (method, TRUE); \
85 char *field_fname = mono_field_full_name (field); \
86 cfg->exception_type = MONO_EXCEPTION_FIELD_ACCESS; \
87 cfg->exception_message = g_strdup_printf ("Field `%s' is inaccessible from method `%s'\n", field_fname, method_fname); \
88 g_free (method_fname); \
89 g_free (field_fname); \
90 goto exception_exit; \
91 } while (0)
92 #define GENERIC_SHARING_FAILURE(opcode) do { \
93 if (cfg->generic_sharing_context) { \
94 if (cfg->verbose_level > 2) \
95 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__); \
96 cfg->exception_type = MONO_EXCEPTION_GENERIC_SHARING_FAILED; \
97 goto exception_exit; \
98 } \
99 } while (0)
101 /* Determine whenever 'ins' represents a load of the 'this' argument */
102 #define MONO_CHECK_THIS(ins) (mono_method_signature (cfg->method)->hasthis && ((ins)->opcode == OP_MOVE) && ((ins)->sreg1 == cfg->args [0]->dreg))
110 MonoInst* mono_emit_native_call (MonoCompile *cfg, gconstpointer func, MonoMethodSignature *sig, MonoInst **args);
111 void mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native);
114 /* helper methods signature */
123 /*
124 * Instruction metadata
125 */
126 #ifdef MINI_OP
127 #undef MINI_OP
128 #endif
129 #ifdef MINI_OP3
130 #undef MINI_OP3
131 #endif
133 #define MINI_OP3(a,b,dest,src1,src2,src3) dest, src1, src2, src3,
139 #if SIZEOF_REGISTER == 8
140 #define LREG IREG
141 #else
143 #endif
144 /* keep in sync with the enum in mini.h */
145 const char
146 ins_info[] = {
148 };
149 #undef MINI_OP
150 #undef MINI_OP3
152 #define MINI_OP(a,b,dest,src1,src2) ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0)),
153 #define MINI_OP3(a,b,dest,src1,src2,src3) ((src3) != NONE ? 3 : ((src2) != NONE ? 2 : ((src1) != NONE ? 1 : 0))),
154 /*
155 * This should contain the index of the last sreg + 1. This is not the same
156 * as the number of sregs for opcodes like IA64_CMP_EQ_IMM.
157 */
160 };
161 #undef MINI_OP
162 #undef MINI_OP3
164 #define MONO_INIT_VARINFO(vi,id) do { \
165 (vi)->range.first_use.pos.bid = 0xffff; \
166 (vi)->reg = -1; \
167 (vi)->idx = (id); \
168 } while (0)
170 void
172 {
176 }
178 guint32
180 {
182 }
184 guint32
186 {
188 }
190 guint32
192 {
194 }
196 guint32
198 {
200 }
202 guint
204 {
208 handle_enum:
234 #if SIZEOF_REGISTER == 8
236 #else
238 #endif
247 }
262 }
264 }
266 void
268 {
281 }
283 /*
284 * Can't put this at the beginning, since other files reference stuff from this
285 * file.
286 */
287 #ifndef DISABLE_JIT
289 #define UNVERIFIED do { if (mini_get_debug_options ()->break_on_unverified) G_BREAKPOINT (); else goto unverified; } while (0)
291 #define GET_BBLOCK(cfg,tblock,ip) do { \
292 (tblock) = cfg->cil_offset_to_bb [(ip) - cfg->cil_start]; \
293 if (!(tblock)) { \
294 if ((ip) >= end || (ip) < header->code) UNVERIFIED; \
295 NEW_BBLOCK (cfg, (tblock)); \
296 (tblock)->cil_code = (ip); \
297 ADD_BBLOCK (cfg, (tblock)); \
298 } \
299 } while (0)
301 #if defined(TARGET_X86) || defined(TARGET_AMD64)
302 #define EMIT_NEW_X86_LEA(cfg,dest,sr1,sr2,shift,imm) do { \
303 MONO_INST_NEW (cfg, dest, OP_X86_LEA); \
304 (dest)->dreg = alloc_preg ((cfg)); \
305 (dest)->sreg1 = (sr1); \
306 (dest)->sreg2 = (sr2); \
307 (dest)->inst_imm = (imm); \
308 (dest)->backend.shift_amount = (shift); \
309 MONO_ADD_INS ((cfg)->cbb, (dest)); \
310 } while (0)
311 #endif
313 #if SIZEOF_REGISTER == 8
314 #define ADD_WIDEN_OP(ins, arg1, arg2) do { \
316 if ((arg1)->type == STACK_PTR && (arg2)->type == STACK_I4) { \
317 MonoInst *widen; \
318 int dr = alloc_preg (cfg); \
319 EMIT_NEW_UNALU (cfg, widen, OP_SEXT_I4, dr, (arg2)->dreg); \
320 (ins)->sreg2 = widen->dreg; \
321 } \
322 } while (0)
323 #else
324 #define ADD_WIDEN_OP(ins, arg1, arg2)
325 #endif
327 #define ADD_BINOP(op) do { \
328 MONO_INST_NEW (cfg, ins, (op)); \
329 sp -= 2; \
330 ins->sreg1 = sp [0]->dreg; \
331 ins->sreg2 = sp [1]->dreg; \
332 type_from_op (ins, sp [0], sp [1]); \
333 CHECK_TYPE (ins); \
335 ADD_WIDEN_OP (ins, sp [0], sp [1]); \
336 ins->dreg = alloc_dreg ((cfg), (ins)->type); \
337 MONO_ADD_INS ((cfg)->cbb, (ins)); \
338 *sp++ = mono_decompose_opcode ((cfg), (ins)); \
339 } while (0)
341 #define ADD_UNOP(op) do { \
342 MONO_INST_NEW (cfg, ins, (op)); \
343 sp--; \
344 ins->sreg1 = sp [0]->dreg; \
345 type_from_op (ins, sp [0], NULL); \
346 CHECK_TYPE (ins); \
347 (ins)->dreg = alloc_dreg ((cfg), (ins)->type); \
348 MONO_ADD_INS ((cfg)->cbb, (ins)); \
349 *sp++ = mono_decompose_opcode (cfg, ins); \
350 } while (0)
352 #define ADD_BINCOND(next_block) do { \
353 MonoInst *cmp; \
354 sp -= 2; \
355 MONO_INST_NEW(cfg, cmp, OP_COMPARE); \
356 cmp->sreg1 = sp [0]->dreg; \
357 cmp->sreg2 = sp [1]->dreg; \
358 type_from_op (cmp, sp [0], sp [1]); \
359 CHECK_TYPE (cmp); \
360 type_from_op (ins, sp [0], sp [1]); \
361 ins->inst_many_bb = mono_mempool_alloc (cfg->mempool, sizeof(gpointer)*2); \
362 GET_BBLOCK (cfg, tblock, target); \
363 link_bblock (cfg, bblock, tblock); \
364 ins->inst_true_bb = tblock; \
365 if ((next_block)) { \
366 link_bblock (cfg, bblock, (next_block)); \
367 ins->inst_false_bb = (next_block); \
368 start_new_bblock = 1; \
369 } else { \
370 GET_BBLOCK (cfg, tblock, ip); \
371 link_bblock (cfg, bblock, tblock); \
372 ins->inst_false_bb = tblock; \
373 start_new_bblock = 2; \
374 } \
375 if (sp != stack_start) { \
376 handle_stack_args (cfg, stack_start, sp - stack_start); \
377 CHECK_UNVERIFIABLE (cfg); \
378 } \
379 MONO_ADD_INS (bblock, cmp); \
380 MONO_ADD_INS (bblock, ins); \
381 } while (0)
383 /* *
384 * link_bblock: Links two basic blocks
385 *
386 * links two basic blocks in the control flow graph, the 'from'
387 * argument is the starting block and the 'to' argument is the block
388 * the control flow ends to after 'from'.
389 */
390 static void
392 {
396 #if 0
399 printf ("edge from IL%04x to IL_%04x\n", from->cil_code - cfg->cil_code, to->cil_code - cfg->cil_code);
400 else
405 else
407 }
408 #endif
415 }
416 }
421 }
425 }
432 }
433 }
438 }
442 }
443 }
445 void
447 {
449 }
451 /**
452 * mono_find_block_region:
453 *
454 * We mark each basic block with a region ID. We use that to avoid BB
455 * optimizations when blocks are in different regions.
456 *
457 * Returns:
458 * A region token that encodes where this region is, and information
459 * about the clause owner for this block.
460 *
461 * The region encodes the try/catch/filter clause that owns this block
462 * as well as the type. -1 is a special value that represents a block
463 * that is in none of try/catch/filter.
464 */
465 static int
467 {
474 if ((clause->flags == MONO_EXCEPTION_CLAUSE_FILTER) && (offset >= clause->data.filter_offset) &&
483 else
485 }
489 }
492 }
496 {
508 }
509 }
511 }
513 static void
515 {
523 /* prevent it from being register allocated */
527 }
529 MonoInst *
531 {
533 }
537 {
545 /* prevent it from being register allocated */
551 }
553 /*
554 * Returns the type used in the eval stack when @type is loaded.
555 * FIXME: return a MonoType/MonoClass for the byref and VALUETYPE cases.
556 */
557 void
559 {
566 }
568 handle_enum:
612 }
622 /* FIXME: all the arguments must be references for now,
623 * later look inside cfg and see if the arg num is
624 * really a reference
625 */
631 }
632 }
634 /*
635 * The following tables are used to quickly validate the IL code in type_from_op ().
636 */
637 static const char
647 };
649 static const char
650 neg_table [] = {
652 };
654 /* reduce the size of this table */
655 static const char
665 };
667 static const char
669 /* Inv i L p F & O vt */
678 };
680 /* reduce the size of this table */
681 static const char
691 };
693 /*
694 * Tables to map from the non-specific opcode to the matching
695 * type-specific opcode.
696 */
697 /* handles from CEE_ADD to CEE_SHR_UN (CEE_REM_UN for floats) */
698 static const guint16
701 };
703 /* handles from CEE_NEG to CEE_CONV_U8 */
704 static const guint16
707 };
709 /* handles from CEE_CONV_U2 to CEE_SUB_OVF_UN */
710 static const guint16
712 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
713 };
715 /* handles from CEE_CONV_OVF_I1_UN to CEE_CONV_OVF_U_UN */
716 static const guint16
718 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
719 };
721 /* handles from CEE_CONV_OVF_I1 to CEE_CONV_OVF_U8 */
722 static const guint16
724 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
725 };
727 /* handles from CEE_BEQ to CEE_BLT_UN */
728 static const guint16
730 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
731 };
733 /* handles from CEE_CEQ to CEE_CLT_UN */
734 static const guint16
736 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
737 };
739 /*
740 * Sets ins->type (the type on the eval stack) according to the
741 * type of the opcode and the arguments to it.
742 * Invalid IL code is marked by setting ins->type to the invalid value STACK_INV.
743 *
744 * FIXME: this function sets ins->type unconditionally in some cases, but
745 * it should set it to invalid for some types (a conv.x on an object)
746 */
747 static void
751 /* binops */
757 /* FIXME: check unverifiable args for STACK_MP */
779 if ((src1->type == STACK_I8) || ((SIZEOF_REGISTER == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
783 else
788 if ((src1->type == STACK_I8) || ((SIZEOF_REGISTER == 8) && ((src1->type == STACK_PTR) || (src1->type == STACK_OBJ) || (src1->type == STACK_MP))))
814 /* unops */
822 else
843 }
876 #if SIZEOF_REGISTER == 8
878 #else
880 #endif
888 }
956 }
960 }
962 static const char
963 ldind_type [] = {
964 STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I4, STACK_I8, STACK_PTR, STACK_R8, STACK_R8, STACK_OBJ
965 };
967 #if 0
969 static const char
972 };
974 static int
986 }
987 args++;
988 }
1009 }
1022 }
1023 /*if (!param_table [args [i].type] [sig->params [i]->type])
1024 return 0;*/
1025 }
1027 }
1028 #endif
1030 /*
1031 * When we need a pointer to the current domain many times in a method, we
1032 * call mono_domain_get() once and we store the result in a local variable.
1033 * This function returns the variable that represents the MonoDomain*.
1034 */
1037 {
1041 }
1043 /*
1044 * The got_var contains the address of the Global Offset Table when AOT
1045 * compiling.
1046 */
1047 MonoInst *
1049 {
1050 #ifdef MONO_ARCH_NEED_GOT_VAR
1055 }
1057 #else
1059 #endif
1060 }
1064 {
1069 /* force the var to be stack allocated */
1071 }
1074 }
1089 }
1091 }
1095 {
1130 else
1135 }
1138 }
1142 {
1176 }
1178 }
1180 /*
1181 * We try to share variables when possible
1182 */
1185 {
1189 /* inlining can result in deeper stacks */
1209 }
1211 }
1213 static void
1215 {
1216 /*
1217 * Don't use this if a generic_context is set, since that means AOT can't
1218 * look up the method using just the image+token.
1219 * table == 0 means this is a reference made from a wrapper.
1220 */
1222 MonoJumpInfoToken *jump_info_token = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoJumpInfoToken));
1226 }
1227 }
1229 /*
1230 * This function is called to handle items that are left on the evaluation stack
1231 * at basic block boundaries. What happens is that we save the values to local variables
1232 * and we reload them later when first entering the target basic block (with the
1233 * handle_loaded_temps () function).
1234 * A single joint point will use the same variables (stored in the array bb->out_stack or
1235 * bb->in_stack, if the basic block is before or after the joint point).
1236 *
1237 * This function needs to be called _before_ emitting the last instruction of
1238 * the bb (i.e. before emitting a branch).
1239 * If the stack merge fails at a join point, cfg->unverifiable is set.
1240 */
1241 static void
1243 {
1248 gboolean found;
1256 //printf ("bblock %d has out:", bb->block_num);
1260 /* exception handlers are linked, but they should not be considered for stack args */
1263 //printf (" %d", outb->block_num);
1268 }
1269 }
1270 //printf ("\n");
1274 /*
1275 * try to reuse temps already allocated for this purpouse, if they occupy the same
1276 * stack slot and if they are of the same type.
1277 * This won't cause conflicts since if 'local' is used to
1278 * store one of the values in the in_stack of a bblock, then
1279 * the same variable will be used for the same outgoing stack
1280 * slot as well.
1281 * This doesn't work when inlining methods, since the bblocks
1282 * in the inlined methods do not inherit their in_stack from
1283 * the bblock they are inlined to. See bug #58863 for an
1284 * example.
1285 */
1288 else
1290 }
1291 }
1292 }
1296 /* exception handlers are linked, but they should not be considered for stack args */
1303 }
1305 }
1308 }
1318 }
1320 /*
1321 * It is possible that the out bblocks already have in_stack assigned, and
1322 * the in_stacks differ. In this case, we will store to all the different
1323 * in_stacks.
1324 */
1329 /* Find a bblock which has a different in_stack */
1333 /* exception handlers are linked, but they should not be considered for stack args */
1335 bindex++;
1337 }
1345 }
1349 }
1350 bindex ++;
1351 }
1352 }
1353 }
1355 /* Emit code which loads interface_offsets [klass->interface_id]
1356 * The array is stored in memory before vtable.
1357 */
1358 static void
1359 mini_emit_load_intf_reg_vtable (MonoCompile *cfg, int intf_reg, int vtable_reg, MonoClass *klass)
1360 {
1368 }
1370 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, intf_reg, vtable_reg, -((klass->interface_id + 1) * SIZEOF_VOID_P));
1371 }
1372 }
1374 static void
1375 mini_emit_interface_bitmap_check (MonoCompile *cfg, int intf_bit_reg, int base_reg, int offset, MonoClass *klass)
1376 {
1378 #ifdef COMPRESSED_INTERFACE_BITMAP
1386 else
1390 #else
1405 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, ibitmap_byte_reg, ibitmap_byte_address_reg, 0);
1411 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADI1_MEMBASE, ibitmap_byte_reg, ibitmap_reg, klass->interface_id >> 3);
1412 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_AND_IMM, intf_bit_reg, ibitmap_byte_reg, 1 << (klass->interface_id & 7));
1413 }
1414 #endif
1415 }
1417 /*
1418 * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoClass
1419 * stored in "klass_reg" implements the interface "klass".
1420 */
1421 static void
1422 mini_emit_load_intf_bit_reg_class (MonoCompile *cfg, int intf_bit_reg, int klass_reg, MonoClass *klass)
1423 {
1424 mini_emit_interface_bitmap_check (cfg, intf_bit_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, interface_bitmap), klass);
1425 }
1427 /*
1428 * Emit code which loads into "intf_bit_reg" a nonzero value if the MonoVTable
1429 * stored in "vtable_reg" implements the interface "klass".
1430 */
1431 static void
1432 mini_emit_load_intf_bit_reg_vtable (MonoCompile *cfg, int intf_bit_reg, int vtable_reg, MonoClass *klass)
1433 {
1434 mini_emit_interface_bitmap_check (cfg, intf_bit_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, interface_bitmap), klass);
1435 }
1437 /*
1438 * Emit code which checks whenever the interface id of @klass is smaller than
1439 * than the value given by max_iid_reg.
1440 */
1441 static void
1444 {
1449 }
1450 else
1454 else
1456 }
1458 /* Same as above, but obtains max_iid from a vtable */
1459 static void
1462 {
1465 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, max_interface_id));
1467 }
1469 /* Same as above, but obtains max_iid from a klass */
1470 static void
1473 {
1476 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, max_iid_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, max_interface_id));
1478 }
1480 static void
1481 mini_emit_isninst_cast_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_ins, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1482 {
1488 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, idepth));
1491 }
1492 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, supertypes));
1502 }
1504 }
1506 static void
1507 mini_emit_isninst_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1508 {
1510 }
1512 static void
1513 mini_emit_iface_cast (MonoCompile *cfg, int vtable_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1514 {
1522 else
1524 }
1526 /*
1527 * Variant of the above that takes a register to the class, not the vtable.
1528 */
1529 static void
1530 mini_emit_iface_class_cast (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoBasicBlock *false_target, MonoBasicBlock *true_target)
1531 {
1539 else
1541 }
1544 mini_emit_class_check_inst (MonoCompile *cfg, int klass_reg, MonoClass *klass, MonoInst *klass_inst)
1545 {
1554 }
1556 }
1560 {
1562 }
1565 mini_emit_class_check_branch (MonoCompile *cfg, int klass_reg, MonoClass *klass, int branch_op, MonoBasicBlock *target)
1566 {
1573 }
1575 }
1577 static void
1578 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null);
1580 static void
1581 mini_emit_castclass_inst (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoInst *klass_inst, MonoBasicBlock *object_is_null)
1582 {
1588 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, rank));
1591 // MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, klass));
1592 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, cast_class));
1596 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, object_is_null);
1599 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, object_is_null);
1606 // Pass -1 as obj_reg to skip the check below for arrays of arrays
1608 }
1611 /* Check that the object is a vector too */
1616 }
1623 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU2_MEMBASE, idepth_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, idepth));
1626 }
1627 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, stypes_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, supertypes));
1630 }
1631 }
1633 static void
1634 mini_emit_castclass (MonoCompile *cfg, int obj_reg, int klass_reg, MonoClass *klass, MonoBasicBlock *object_is_null)
1635 {
1637 }
1639 static void
1641 {
1660 #if SIZEOF_REGISTER == 8
1664 #endif
1665 }
1666 }
1672 else
1676 /* This could be optimized further if neccesary */
1681 }
1683 }
1685 #if !NO_UNALIGNED_ACCESS
1691 }
1696 }
1697 }
1698 #endif
1704 }
1709 }
1714 }
1715 }
1717 void
1718 mini_emit_memcpy (MonoCompile *cfg, int destreg, int doffset, int srcreg, int soffset, int size, int align)
1719 {
1725 /*FIXME arbitrary hack to avoid unbound code expansion.*/
1729 /* This could be optimized further if neccesary */
1737 }
1738 }
1740 #if !NO_UNALIGNED_ACCESS
1749 }
1750 }
1751 #endif
1760 }
1768 }
1776 }
1777 }
1779 static int
1780 ret_type_to_call_opcode (MonoType *type, int calli, int virt, MonoGenericSharingContext *gsctx)
1781 {
1785 handle_enum:
1829 }
1831 }
1833 /*
1834 * target_type_is_incompatible:
1835 * @cfg: MonoCompile context
1836 *
1837 * Check that the item @arg on the evaluation stack can be stored
1838 * in the target type (can be a local, or field, etc).
1839 * The cfg arg can be used to check if we need verification or just
1840 * validity checks.
1841 *
1842 * Returns: non-0 value if arg can't be stored on a target.
1843 */
1844 static int
1846 {
1851 /* FIXME: check that the pointed to types match */
1857 }
1875 /* STACK_MP is needed when setting pinned locals */
1892 /* FIXME: check type compatibility */
1929 /* FIXME: check type compatibility */
1931 }
1934 /* FIXME: all the arguments must be references for now,
1935 * later look inside cfg and see if the arg num is
1936 * really a reference
1937 */
1944 }
1946 }
1948 /*
1949 * Prepare arguments for passing to a function call.
1950 * Return a non-zero value if the arguments can't be passed to the given
1951 * signature.
1952 * The type checks are not yet complete and some conversions may need
1953 * casts on 32 or 64 bit architectures.
1954 *
1955 * FIXME: implement this using target_type_is_incompatible ()
1956 */
1957 static int
1959 {
1966 args++;
1967 }
1973 }
1976 handle_enum:
1996 if (args [i]->type != STACK_I4 && args [i]->type != STACK_PTR && args [i]->type != STACK_MP && args [i]->type != STACK_OBJ)
2021 }
2036 }
2037 }
2039 }
2041 static int
2043 {
2057 }
2060 }
2062 static int
2064 {
2078 }
2081 }
2083 #ifdef MONO_ARCH_HAVE_IMT
2084 static void
2086 {
2087 #ifdef MONO_ARCH_IMT_REG
2100 }
2102 #ifdef ENABLE_LLVM
2105 #endif
2107 #else
2109 #endif
2110 }
2111 #endif
2115 {
2123 }
2128 {
2130 #ifdef MONO_ARCH_SOFT_FLOAT
2132 #endif
2136 else
2137 MONO_INST_NEW_CALL (cfg, call, ret_type_to_call_opcode (sig->ret, calli, virtual, cfg->generic_sharing_context));
2147 //g_assert_not_reached ();
2148 }
2155 /*
2156 * We use a new opcode OP_OUTARG_VTRETADDR instead of LDADDR for emitting the
2157 * address of return value to increase optimization opportunities.
2158 * Before vtype decomposition, the dreg of the call ins itself represents the
2159 * fact the call modifies the return value. After decomposition, the call will
2160 * be transformed into one of the OP_VOIDCALL opcodes, and the VTRETADDR opcode
2161 * will be transformed into an LDADDR.
2162 */
2166 /* We reference the call too since call->dreg could change during optimization */
2176 #ifdef MONO_ARCH_SOFT_FLOAT
2178 /*
2179 * If the call has a float argument, we would need to do an r8->r4 conversion using
2180 * an icall, but that cannot be done during the call sequence since it would clobber
2181 * the call registers + the stack. So we do it before emitting the call.
2182 */
2189 else
2200 /* The result will be in an int vreg */
2202 }
2203 }
2204 }
2205 #endif
2207 #ifdef ENABLE_LLVM
2210 else
2212 #else
2214 #endif
2220 }
2224 {
2232 }
2234 static void
2236 {
2237 #ifdef MONO_ARCH_RGCTX_REG
2241 #ifdef ENABLE_LLVM
2243 #endif
2244 #else
2245 NOT_IMPLEMENTED;
2246 #endif
2247 }
2250 mono_emit_rgctx_calli (MonoCompile *cfg, MonoMethodSignature *sig, MonoInst **args, MonoInst *addr, MonoInst *rgctx_arg)
2251 {
2258 }
2263 }
2266 emit_get_rgctx_method (MonoCompile *cfg, int context_used, MonoMethod *cmethod, int rgctx_type);
2273 {
2274 gboolean might_be_remote;
2281 /* Create the real signature */
2282 /* FIXME: Cache these */
2287 }
2299 addr = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_REMOTING_INVOKE_WITH_CHECK);
2302 }
2308 else
2318 #ifdef MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
2319 if ((method->klass->parent == mono_defaults.multicastdelegate_class) && (!strcmp (method->name, "Invoke"))) {
2322 /* Make a call to delegate->invoke_impl */
2329 }
2330 #endif
2337 /*
2338 * the method is not virtual, we just need to ensure this is not null
2339 * and then we can call the method directly.
2340 */
2342 /*
2343 * The check above ensures method is not gshared, this is needed since
2344 * gshared methods can't have wrappers.
2345 */
2347 }
2357 }
2360 /*
2361 * the method is virtual, but we can statically dispatch since either
2362 * it's class or the method itself are sealed.
2363 * But first we need to ensure it's not a null reference.
2364 */
2371 }
2376 MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, this_reg, G_STRUCT_OFFSET (MonoObject, vtable));
2379 #ifdef MONO_ARCH_HAVE_IMT
2385 }
2386 #endif
2391 }
2396 #ifdef MONO_ARCH_HAVE_IMT
2400 }
2401 #endif
2402 }
2406 }
2411 }
2414 mono_emit_rgctx_method_call_full (MonoCompile *cfg, MonoMethod *method, MonoMethodSignature *sig,
2416 {
2424 }
2432 }
2434 MonoInst*
2436 {
2437 return mono_emit_method_call_full (cfg, method, mono_method_signature (method), args, this, NULL);
2438 }
2440 MonoInst*
2443 {
2454 }
2456 MonoInst*
2458 {
2464 }
2466 /*
2467 * mono_emit_abs_call:
2468 *
2469 * Emit a call to the runtime function described by PATCH_TYPE and DATA.
2470 */
2474 {
2478 /*
2479 * We pass ji as the call address, the PATCH_INFO_ABS resolving code will
2480 * handle it.
2481 */
2488 }
2492 {
2497 /*
2498 * Native code might return non register sized integers
2499 * without initializing the upper bits.
2500 */
2516 }
2525 }
2526 }
2527 }
2530 }
2534 {
2540 }
2542 }
2544 #if HAVE_WRITE_BARRIERS
2546 static void
2548 {
2562 /*FIXME support nested value types so this works for: struct X { Y y; int z;} struct Y { object a,b; }*/
2566 }
2567 }
2568 }
2570 static gboolean
2571 mono_emit_wb_aware_memcpy (MonoCompile *cfg, MonoClass *klass, int destreg, int doffset, int srcreg, int soffset, int size, int align)
2572 {
2580 /*types with references can't have alignment smaller than sizeof(void*) */
2584 /*
2585 * This value cannot be biger than 32 due to the way we calculate the required wb bitmap.
2586 * FIXME tune this value.
2587 */
2596 /*tmp = dreg + doffset*/
2602 }
2617 }
2625 //tmp += sizeof (void*)
2629 }
2630 }
2632 /* Those cannot be references since size < sizeof (void*) */
2639 }
2647 }
2655 }
2658 }
2659 #endif
2661 /*
2662 * Emit code to copy a valuetype of type @klass whose address is stored in
2663 * @src->dreg to memory whose address is stored at @dest->dreg.
2664 */
2665 void
2666 mini_emit_stobj (MonoCompile *cfg, MonoInst *dest, MonoInst *src, MonoClass *klass, gboolean native)
2667 {
2674 /*
2675 * This check breaks with spilled vars... need to handle it during verification anyway.
2676 * g_assert (klass && klass == src->klass && klass == dest->klass);
2677 */
2681 else
2684 #if HAVE_WRITE_BARRIERS
2685 /* if native is true there should be no references in the struct */
2687 /* Avoid barriers when storing to the stack */
2697 /*FIXME can we use the intrinsics version when context_used == TRUE? */
2700 } else if ((cfg->opt & MONO_OPT_INTRINS) && mono_emit_wb_aware_memcpy (cfg, klass, dest->dreg, 0, src->dreg, 0, n, align)) {
2708 }
2709 }
2713 }
2714 }
2715 #endif
2718 /* FIXME: Optimize the case when src/dest is OP_LDADDR */
2727 }
2728 }
2732 {
2738 }
2740 }
2742 void
2744 {
2747 guint32 align;
2750 /* FIXME: Optimize this for the case when dest is an LDADDR */
2757 }
2764 }
2765 }
2769 {
2802 EMIT_NEW_LOAD_MEMBASE (cfg, vtable_var, OP_LOAD_MEMBASE, vtable_reg, mrgctx_var->dreg, G_STRUCT_OFFSET (MonoMethodRuntimeGenericContext, class_vtable));
2804 }
2813 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, vtable_reg, this->dreg, G_STRUCT_OFFSET (MonoObject, vtable));
2815 }
2816 }
2819 mono_patch_info_rgctx_entry_new (MonoMemPool *mp, MonoMethod *method, gboolean in_mrgctx, MonoJumpInfoType patch_type, gconstpointer patch_data, int info_type)
2820 {
2830 }
2834 {
2835 return mono_emit_abs_call (cfg, MONO_PATCH_INFO_RGCTX_FETCH, entry, helper_sig_rgctx_lazy_fetch_trampoline, &rgctx);
2836 }
2841 {
2842 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);
2846 }
2848 /*
2849 * emit_get_rgctx_method:
2850 *
2851 * Emit IR to load the property RGCTX_TYPE of CMETHOD. If context_used is 0, emit
2852 * normal constants, else emit a load from the rgctx.
2853 */
2857 {
2870 }
2872 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);
2876 }
2877 }
2882 {
2883 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);
2887 }
2889 /*
2890 * On return the caller must check @klass for load errors.
2891 */
2892 static void
2894 {
2911 }
2914 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_GENERIC_CLASS_INIT, NULL, helper_sig_generic_class_init_trampoline_llvm, &vtable_arg);
2915 else
2916 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_GENERIC_CLASS_INIT, NULL, helper_sig_generic_class_init_trampoline, &vtable_arg);
2917 #ifdef MONO_ARCH_VTABLE_REG
2920 #else
2921 NOT_IMPLEMENTED;
2922 #endif
2923 }
2925 /*
2926 * On return the caller must check @array_class for load errors
2927 */
2928 static void
2930 {
2948 }
2969 }
2970 }
2973 }
2975 static void
2977 {
2987 }
2993 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, G_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), klass_reg);
2995 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, tls_get->dreg, G_STRUCT_OFFSET (MonoJitTlsData, class_cast_to), to_klass_reg);
2996 }
2997 }
2999 static void
3001 {
3002 /* Reset the variables holding the cast details */
3007 /* It is enough to reset the from field */
3008 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STORE_MEMBASE_IMM, tls_get->dreg, G_STRUCT_OFFSET (MonoJitTlsData, class_cast_from), 0);
3009 }
3010 }
3012 /**
3013 * Handles unbox of a Nullable<T>. If context_used is non zero, then shared
3014 * generic code is generated.
3015 */
3018 {
3024 /* FIXME: What if the class is shared? We might not
3025 have to get the address of the method from the
3026 RGCTX. */
3028 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3035 }
3036 }
3040 {
3049 MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vtable_reg, obj_reg, G_STRUCT_OFFSET (MonoObject, vtable));
3050 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, rank));
3052 /* FIXME: generics */
3055 // Check rank == 0
3060 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, element_class));
3065 /* This assertion is from the unboxcast insn */
3077 }
3079 NEW_BIALU_IMM (cfg, add, OP_ADD_IMM, alloc_dreg (cfg, STACK_PTR), obj_reg, sizeof (MonoObject));
3085 }
3087 /*
3088 * Returns NULL and set the cfg exception on error.
3089 */
3092 {
3101 /*
3102 FIXME: we cannot get managed_alloc here because we can't get
3103 the class's vtable (because it's not a closed class)
3105 MonoVTable *vtable = mono_class_vtable (cfg->domain, klass);
3106 MonoMethod *managed_alloc = mono_gc_get_managed_allocator (vtable, for_box);
3107 */
3111 else
3122 }
3125 }
3132 } else if (cfg->compile_aot && cfg->cbb->out_of_line && klass->type_token && klass->image == mono_defaults.corlib && !klass->generic_class) {
3133 /* This happens often in argument checking code, eg. throw new FooException... */
3134 /* Avoid relocations and save some space by calling a helper function specialized to mscorlib */
3140 gboolean pass_lw;
3146 }
3148 #ifndef MONO_CROSS_COMPILE
3150 #endif
3155 }
3162 }
3165 }
3166 }
3169 }
3171 /*
3172 * Returns NULL and set the cfg exception on error.
3173 */
3176 {
3183 /* FIXME: What if the class is shared? We might not
3184 have to get the method address from the RGCTX. */
3186 MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
3192 }
3193 }
3199 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, &klass->byval_arg, alloc->dreg, sizeof (MonoObject), val->dreg);
3202 }
3204 // FIXME: This doesn't work yet (class libs tests fail?)
3205 #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) || mono_class_has_variant_generic_params (klass) || klass->byval_arg.type == MONO_TYPE_VAR || klass->byval_arg.type == MONO_TYPE_MVAR)
3207 /*
3208 * Returns NULL and set the cfg exception on error.
3209 */
3212 {
3225 /* Complex case, handle by an icall */
3227 /* obj */
3230 /* klass */
3235 /* Simple case, handled by the code below */
3236 }
3237 }
3254 if (!klass->rank && !cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
3255 /* the remoting code is broken, access the class for now */
3256 if (0) { /*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
3262 }
3267 }
3272 }
3273 }
3280 }
3282 /*
3283 * Returns NULL and set the cfg exception on error.
3284 */
3287 {
3301 /* Complex case, handle by an icall */
3303 /* obj */
3306 /* klass */
3311 /* Simple case, the code below can handle it */
3312 }
3313 }
3319 /* Do the assignment at the beginning, so the other assignment can be if converted */
3331 /* the is_null_bb target simply copies the input register to the output */
3341 MONO_EMIT_NEW_LOAD_MEMBASE_OP (cfg, OP_LOADU1_MEMBASE, rank_reg, vtable_reg, G_STRUCT_OFFSET (MonoVTable, rank));
3345 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, eclass_reg, klass_reg, G_STRUCT_OFFSET (MonoClass, cast_class));
3349 mini_emit_class_check_branch (cfg, parent_reg, mono_defaults.enum_class->parent, OP_PBNE_UN, is_null_bb);
3353 mini_emit_class_check_branch (cfg, eclass_reg, mono_defaults.enum_class->parent, OP_PBEQ, is_null_bb);
3363 /* Check that the object is a vector too */
3368 }
3370 /* the is_null_bb target simply copies the input register to the output */
3372 }
3376 /* the is_null_bb target simply copies the input register to the output */
3379 if (!cfg->compile_aot && !(cfg->opt & MONO_OPT_SHARED) && (klass->flags & TYPE_ATTRIBUTE_SEALED)) {
3381 /* the remoting code is broken, access the class for now */
3382 if (0) {/*FIXME what exactly is broken? This change refers to r39380 from 2005 and mention some remoting fixes were due.*/
3388 }
3393 }
3398 /* the is_null_bb target simply copies the input register to the output */
3400 }
3401 }
3402 }
3414 }
3418 {
3419 /* This opcode takes as input an object reference and a class, and returns:
3420 0) if the object is an instance of the class,
3421 1) if the object is not instance of the class,
3422 2) if the object is a proxy whose type cannot be determined */
3449 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, false_bb);
3452 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
3460 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
3462 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
3463 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, G_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
3466 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
3476 }
3494 /* FIXME: */
3500 }
3504 {
3505 /* This opcode takes as input an object reference and a class, and returns:
3506 0) if the object is an instance of the class,
3507 1) if the object is a proxy whose type cannot be determined
3508 an InvalidCastException exception is thrown otherwhise*/
3536 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
3548 mini_emit_class_check_branch (cfg, klass_reg, mono_defaults.transparent_proxy_class, OP_PBNE_UN, no_proxy_bb);
3551 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, remote_class));
3552 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, klass_reg, tmp_reg, G_STRUCT_OFFSET (MonoRemoteClass, proxy_class));
3555 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, tmp_reg, obj_reg, G_STRUCT_OFFSET (MonoTransparentProxy, custom_type_info));
3571 }
3579 /* FIXME: */
3585 }
3587 /*
3588 * Returns NULL and set the cfg exception on error.
3589 */
3591 handle_delegate_ctor (MonoCompile *cfg, MonoClass *klass, MonoInst *target, MonoMethod *method, int context_used)
3592 {
3602 /* Inline the contents of mono_delegate_ctor */
3604 /* Set target field */
3605 /* Optimize away setting of NULL target */
3607 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, target), target->dreg);
3609 /* Set method field */
3611 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, method), method_ins->dreg);
3613 /*
3614 * To avoid looking up the compiled code belonging to the target method
3615 * in mono_delegate_trampoline (), we allocate a per-domain memory slot to
3616 * store it, and we fill it after the method has been compiled.
3617 */
3622 code_slot_ins = emit_get_rgctx_method (cfg, context_used, method, MONO_RGCTX_INFO_METHOD_DELEGATE_CODE);
3632 }
3636 }
3637 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, method_code), code_slot_ins->dreg);
3638 }
3640 /* Set invoke_impl field */
3646 }
3647 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STORE_MEMBASE_REG, obj->dreg, G_STRUCT_OFFSET (MonoDelegate, invoke_impl), tramp_ins->dreg);
3649 /* All the checks which are in mono_delegate_ctor () are done by the delegate trampoline */
3652 }
3656 {
3659 /* Need to register the icall so it gets an icall wrapper */
3664 /* mono_array_new_va () needs a vararg calling convention */
3667 /* FIXME: This uses info->sig, but it should use the signature of the wrapper */
3669 }
3671 static void
3673 {
3682 /* Add it to the start of the first bblock */
3686 }
3687 else
3692 /*
3693 * Add a dummy use to keep the got_var alive, since real uses might
3694 * only be generated by the back ends.
3695 * Add it to end_bblock, so the variable's lifetime covers the whole
3696 * method.
3697 * It would be better to make the usage of the got var explicit in all
3698 * cases when the backend needs it (i.e. calls, throw etc.), so this
3699 * wouldn't be needed.
3700 */
3703 }
3708 static gboolean
3710 {
3711 MonoMethodHeaderSummary header;
3713 #ifdef MONO_ARCH_SOFT_FLOAT
3716 #endif
3724 #ifdef MONO_ARCH_HAVE_LMF_OPS
3729 #endif
3735 /*runtime, icall and pinvoke are checked by summary call*/
3742 /* also consider num_locals? */
3743 /* Do the size check early to avoid creating vtables */
3747 else
3750 }
3754 /*
3755 * if we can initialize the class of the method right away, we do,
3756 * otherwise we don't allow inlining if the class needs initialization,
3757 * since it would mean inserting a call to mono_runtime_class_init()
3758 * inside the inlined code
3759 */
3763 /*FIXME it would easier and lazier to just use mono_class_try_get_vtable */
3765 /* No vtable created yet */
3770 /* This makes so that inline cannot trigger */
3771 /* .cctors: too many apps depend on them */
3772 /* running with a specific order... */
3776 }
3779 /* No vtable created yet */
3786 }
3788 /*
3789 * If we're compiling for shared code
3790 * the cctor will need to be run at aot method load time, for example,
3791 * or at the end of the compilation of the inlining method.
3792 */
3793 if (mono_class_needs_cctor_run (method->klass, NULL) && !((method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
3795 }
3797 /*
3798 * CAS - do not inline methods with declarative security
3799 * Note: this has to be before any possible return TRUE;
3800 */
3804 #ifdef MONO_ARCH_SOFT_FLOAT
3805 /* FIXME: */
3811 #endif
3814 }
3816 static gboolean
3818 {
3829 /* The initialization is already done before the method is called */
3833 }
3836 mini_emit_ldelema_1_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index, gboolean bcheck)
3837 {
3839 guint32 size;
3849 #if SIZEOF_REGISTER == 8
3850 /* The array reg is 64 bits but the index reg is only 32 */
3852 /* Not needed */
3857 }
3858 #else
3864 }
3865 #endif
3870 #if defined(TARGET_X86) || defined(TARGET_AMD64)
3874 EMIT_NEW_X86_LEA (cfg, ins, array_reg, index2_reg, fast_log2 [size], G_STRUCT_OFFSET (MonoArray, vector));
3878 }
3879 #endif
3890 }
3892 #ifndef MONO_ARCH_EMULATE_MUL_DIV
3894 mini_emit_ldelema_2_ins (MonoCompile *cfg, MonoClass *klass, MonoInst *arr, MonoInst *index_ins1, MonoInst *index_ins2)
3895 {
3909 guint32 size;
3917 /* range checking */
3948 }
3949 #endif
3952 mini_emit_ldelema_ins (MonoCompile *cfg, MonoMethod *cmethod, MonoInst **sp, unsigned char *ip, gboolean is_set)
3953 {
3964 #ifndef MONO_ARCH_EMULATE_MUL_DIV
3965 /* emit_ldelema_2 depends on OP_LMUL */
3968 }
3969 #endif
3976 }
3978 static MonoBreakPolicy
3980 {
3982 }
3986 /**
3987 * mono_set_break_policy:
3988 * policy_callback: the new callback function
3989 *
3990 * Allow embedders to decide wherther to actually obey breakpoint instructions
3991 * (both break IL instructions and Debugger.Break () method calls), for example
3992 * to not allow an app to be aborted by a perfectly valid IL opcode when executing
3993 * untrusted or semi-trusted code.
3994 *
3995 * @policy_callback will be called every time a break point instruction needs to
3996 * be inserted with the method argument being the method that calls Debugger.Break()
3997 * or has the IL break instruction. The callback should return #MONO_BREAK_POLICY_NEVER
3998 * if it wants the breakpoint to not be effective in the given method.
3999 * #MONO_BREAK_POLICY_ALWAYS is the default.
4000 */
4001 void
4003 {
4006 else
4008 }
4010 static gboolean
4022 }
4023 }
4025 /* optimize the simple GetGenericValueImpl/SetGenericValueImpl generic icalls */
4027 emit_array_generic_access (MonoCompile *cfg, MonoMethodSignature *fsig, MonoInst **args, int is_set)
4028 {
4032 /* the bounds check is already done by the callers */
4040 }
4042 }
4045 mini_emit_inst_for_ctor (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4046 {
4048 #ifdef MONO_ARCH_SIMD_INTRINSICS
4053 }
4054 #endif
4057 }
4060 mini_emit_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4061 {
4076 #if SIZEOF_REGISTER == 8
4077 /* The array reg is 64 bits but the index reg is only 32 */
4079 #else
4081 #endif
4084 #if defined(TARGET_X86) || defined(TARGET_AMD64)
4085 EMIT_NEW_X86_LEA (cfg, ins, args [0]->dreg, index_reg, 1, G_STRUCT_OFFSET (MonoString, chars));
4087 /* Avoid a warning */
4091 #else
4096 #endif
4101 /* Decompose later to allow more optimizations */
4112 /* The corlib functions check for oob already. */
4115 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREI2_MEMBASE_REG, add_reg, G_STRUCT_OFFSET (MonoString, chars), args [2]->dreg);
4124 MONO_EMIT_NEW_LOAD_MEMBASE_FAULT (cfg, vt_reg, args [0]->dreg, G_STRUCT_OFFSET (MonoObject, vtable));
4125 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, vt_reg, G_STRUCT_OFFSET (MonoVTable, type));
4129 #if !defined(MONO_ARCH_EMULATE_MUL_DIV) && !defined(HAVE_MOVING_COLLECTOR)
4139 #endif
4188 }
4190 #if defined(MONO_ARCH_MONITOR_OBJECT_REG)
4195 /*
4196 * Pass the argument normally, the LLVM backend will handle the
4197 * calling convention problems.
4198 */
4199 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_ENTER, NULL, helper_sig_monitor_enter_exit_trampoline_llvm, args);
4205 }
4212 call = (MonoCallInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_MONITOR_EXIT, NULL, helper_sig_monitor_enter_exit_trampoline_llvm, args);
4218 }
4221 }
4222 #elif defined(MONO_ARCH_ENABLE_MONITOR_IL_FASTPATH)
4225 /* Avoid infinite recursion */
4238 #endif
4244 #if SIZEOF_REGISTER == 8
4246 /* 64 bit reads are already atomic */
4252 }
4253 #endif
4255 #ifdef MONO_ARCH_HAVE_ATOMIC_ADD
4262 #if SIZEOF_REGISTER == 8
4265 #endif
4279 }
4286 #if SIZEOF_REGISTER == 8
4289 #endif
4303 }
4309 #if SIZEOF_REGISTER == 8
4312 #endif
4322 }
4323 }
4326 #ifdef MONO_ARCH_HAVE_ATOMIC_EXCHANGE
4328 guint32 opcode;
4333 #if SIZEOF_REGISTER == 8
4337 #else
4340 #endif
4341 else
4364 }
4366 #if HAVE_WRITE_BARRIERS
4372 }
4373 #endif
4374 }
4377 #ifdef MONO_ARCH_HAVE_ATOMIC_CAS
4404 /* g_assert_not_reached (); */
4405 }
4406 #if HAVE_WRITE_BARRIERS
4412 }
4413 #endif
4414 }
4424 else
4428 }
4431 #ifdef TARGET_WIN32
4433 #else
4435 #endif
4437 }
4439 /*
4440 * There is general branches code for Min/Max, but it does not work for
4441 * all inputs:
4442 * http://everything2.com/?node_id=1051618
4443 */
4444 }
4446 #ifdef MONO_ARCH_SIMD_INTRINSICS
4451 }
4452 #endif
4455 }
4457 /*
4458 * This entry point could be used later for arbitrary method
4459 * redirection.
4460 */
4464 {
4466 /* managed string allocation support */
4467 if (strcmp (method->name, "InternalAllocateStr") == 0 && !(mono_profiler_events & MONO_PROFILE_ALLOCATIONS)) {
4473 #ifndef MONO_CROSS_COMPILE
4475 #endif
4481 }
4482 }
4484 }
4486 static void
4488 {
4493 MonoType *argtype = (sig->hasthis && (i == 0)) ? type_from_stack_type (*sp) : sig->params [i - sig->hasthis];
4495 /*
4496 * FIXME: We should use *args++ = sp [0], but that would mean the arg
4497 * would be different than the MonoInst's used to represent arguments, and
4498 * the ldelema implementation can't deal with that.
4499 * Solution: When ldelema is used on an inline argument, create a var for
4500 * it, emit ldelema on that var, and emit the saving code below in
4501 * inline_method () if needed.
4502 */
4505 /* This uses cfg->args [i] which is set by the preceeding line */
4508 sp++;
4509 }
4510 }
4512 #define MONO_INLINE_CALLED_LIMITED_METHODS 1
4513 #define MONO_INLINE_CALLER_LIMITED_METHODS 1
4515 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
4516 static gboolean
4518 {
4527 else
4529 }
4537 //return (strncmp_result <= 0);
4541 }
4542 }
4543 #endif
4545 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
4546 static gboolean
4548 {
4558 }
4559 }
4567 //return (strncmp_result <= 0);
4571 }
4572 }
4573 #endif
4575 static int
4576 inline_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **sp,
4578 {
4586 guint prev_real_offset;
4591 guint32 prev_cil_offset_to_bb_len;
4598 #if (MONO_INLINE_CALLED_LIMITED_METHODS)
4601 #endif
4602 #if (MONO_INLINE_CALLER_LIMITED_METHODS)
4605 #endif
4608 printf ("INLINE START %p %s -> %s\n", cmethod, mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
4613 }
4615 /* allocate local variables */
4623 }
4625 /* allocate space to store the return value */
4628 }
4636 /* allocate start and end blocks */
4637 /* This is needed so if the inline is aborted, we can clean up */
4661 costs = mono_method_to_ir (cfg, cmethod, sbblock, ebblock, rvar, dont_inline, sp, real_offset, *ip == CEE_CALLVIRT);
4681 printf ("INLINE END %s -> %s\n", mono_method_full_name (cfg->method, TRUE), mono_method_full_name (cmethod, TRUE));
4685 /* always add some code to avoid block split failures */
4692 /*
4693 * Get rid of the begin and end bblocks if possible to aid local
4694 * optimizations.
4695 */
4698 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] != ebblock))
4705 if ((prev_cbb->out_count == 1) && (prev_cbb->out_bb [0]->in_count == 1) && (prev_cbb->out_bb [0] == prev)) {
4708 }
4711 }
4714 /*
4715 * If the inlined method contains only a throw, then the ret var is not
4716 * set, so set it to a dummy value.
4717 */
4745 }
4746 }
4750 }
4759 /* This gets rid of the newly added bblocks */
4761 }
4764 }
4766 /*
4767 * Some of these comments may well be out-of-date.
4768 * Design decisions: we do a single pass over the IL code (and we do bblock
4769 * splitting/merging in the few cases when it's required: a back jump to an IL
4770 * address that was not already seen as bblock starting point).
4771 * Code is validated as we go (full verification is still better left to metadata/verify.c).
4772 * Complex operations are decomposed in simpler ones right away. We need to let the
4773 * arch-specific code peek and poke inside this process somehow (except when the
4774 * optimizations can take advantage of the full semantic info of coarse opcodes).
4775 * All the opcodes of the form opcode.s are 'normalized' to opcode.
4776 * MonoInst->opcode initially is the IL opcode or some simplification of that
4777 * (OP_LOAD, OP_STORE). The arch-specific code may rearrange it to an arch-specific
4778 * opcode with value bigger than OP_LAST.
4779 * At this point the IR can be handed over to an interpreter, a dumb code generator
4780 * or to the optimizing code generator that will translate it to SSA form.
4781 *
4782 * Profiling directed optimizations.
4783 * We may compile by default with few or no optimizations and instrument the code
4784 * or the user may indicate what methods to optimize the most either in a config file
4785 * or through repeated runs where the compiler applies offline the optimizations to
4786 * each method and then decides if it was worth it.
4787 */
4789 #define CHECK_TYPE(ins) if (!(ins)->type) UNVERIFIED
4790 #define CHECK_STACK(num) if ((sp - stack_start) < (num)) UNVERIFIED
4791 #define CHECK_STACK_OVF(num) if (((sp - stack_start) + (num)) > header->max_stack) UNVERIFIED
4792 #define CHECK_ARG(num) if ((unsigned)(num) >= (unsigned)num_args) UNVERIFIED
4793 #define CHECK_LOCAL(num) if ((unsigned)(num) >= (unsigned)header->num_locals) UNVERIFIED
4794 #define CHECK_OPSIZE(size) if (ip + size > end) UNVERIFIED
4795 #define CHECK_UNVERIFIABLE(cfg) if (cfg->unverifiable) UNVERIFIED
4796 #define CHECK_TYPELOAD(klass) if (!(klass) || (klass)->exception_type) {cfg->exception_ptr = klass; goto load_error;}
4798 /* offset from br.s -> br like opcodes */
4799 #define BIG_BRANCH_OFFSET 13
4801 static gboolean
4803 {
4807 }
4809 static int
4810 get_basic_blocks (MonoCompile *cfg, MonoMethodHeader* header, guint real_offset, unsigned char *start, unsigned char *end, unsigned char **pos)
4811 {
4815 guint cli_addr;
4823 UNVERIFIED;
4827 ip++;
4862 guint32 j;
4872 }
4874 }
4881 }
4886 /* Find the start of the bblock containing the throw */
4890 bb_start --;
4891 }
4894 }
4895 }
4897 unverified:
4900 }
4903 mini_get_method_allow_open (MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
4904 {
4913 }
4916 mini_get_method (MonoCompile *cfg, MonoMethod *m, guint32 token, MonoClass *klass, MonoGenericContext *context)
4917 {
4920 if (method && cfg && !cfg->generic_sharing_context && mono_class_is_open_constructed_type (&method->klass->byval_arg))
4924 }
4928 {
4933 else
4938 }
4940 /*
4941 * Returns TRUE if the JIT should abort inlining because "callee"
4942 * is influenced by security attributes.
4943 */
4944 static
4946 {
4947 guint32 result;
4951 }
4958 /* Generate code to throw a SecurityException before the actual call/link */
4966 /* don't hide previous results */
4970 }
4973 }
4977 {
4983 }
4986 }
4988 static void
4990 {
4996 }
4998 /*
4999 * Return the original method is a wrapper is specified. We can only access
5000 * the custom attributes from the original method.
5001 */
5004 {
5008 /* native code (which is like Critical) can call any managed method XXX FIXME XXX to validate all usages */
5012 /* in other cases we need to find the original method */
5014 }
5016 static void
5017 ensure_method_is_allowed_to_access_field (MonoCompile *cfg, MonoMethod *caller, MonoClassField *field,
5019 {
5020 /* we can't get the coreclr security level on wrappers since they don't have the attributes */
5021 MonoException *ex = mono_security_core_clr_is_field_access_allowed (get_original_method (caller), field);
5024 }
5026 static void
5027 ensure_method_is_allowed_to_call_method (MonoCompile *cfg, MonoMethod *caller, MonoMethod *callee,
5029 {
5030 /* we can't get the coreclr security level on wrappers since they don't have the attributes */
5031 MonoException *ex = mono_security_core_clr_is_call_allowed (get_original_method (caller), callee);
5034 }
5036 /*
5037 * Check that the IL instructions at ip are the array initialization
5038 * sequence and return the pointer to the data and the size.
5039 */
5041 initialize_array_data (MonoMethod *method, gboolean aot, unsigned char *ip, MonoClass *klass, guint32 len, int *out_size, guint32 *out_field_token)
5042 {
5043 /*
5044 * newarr[System.Int32]
5045 * dup
5046 * ldtoken field valuetype ...
5047 * call void class [mscorlib]System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(class [mscorlib]System.Array, valuetype [mscorlib]System.RuntimeFieldHandle)
5048 */
5053 guint32 rva;
5058 MonoClassField *field = mono_field_from_token (method->klass->image, field_token, &dummy_class, NULL);
5069 if (strcmp (cmethod->name, "InitializeArray") || strcmp (cmethod->klass->name, "RuntimeHelpers") || cmethod->klass->image != mono_defaults.corlib)
5076 /* we need to swap on big endian, so punt. Should we handle R4 and R8 as well? */
5077 #if TARGET_BYTE_ORDER == G_LITTLE_ENDIAN
5087 #ifdef ARM_FPU_FPA
5089 #endif
5093 #endif
5096 }
5101 /*g_print ("optimized in %s: size: %d, numelems: %d\n", method->name, size, newarr->inst_newa_len->inst_c0);*/
5106 /*g_print ("field: 0x%08x, rva: %d, rva_ptr: %p\n", read32 (ip + 2), rva, data_ptr);*/
5107 /* for aot code we do the lookup on load */
5111 /*FIXME is it possible to AOT a SRE assembly not meant to be saved? */
5114 }
5116 }
5118 }
5120 static void
5122 {
5129 else
5132 cfg->exception_message = g_strdup_printf ("Invalid IL code in %s: %s\n", method_fname, method_code);
5136 }
5138 static void
5140 {
5144 }
5146 static gboolean
5148 {
5153 else
5156 }
5158 static void
5160 {
5165 /* Optimize reg-reg moves away */
5166 /*
5167 * Can't optimize other opcodes, since sp[0] might point to
5168 * the last ins of a decomposed opcode.
5169 */
5173 }
5174 }
5176 /*
5177 * ldloca inhibits many optimizations so try to get rid of it in common
5178 * cases.
5179 */
5182 {
5192 }
5194 if (ip + 6 < end && (ip [0] == CEE_PREFIX1) && (ip [1] == CEE_INITOBJ) && ip_in_bb (cfg, cfg->cbb, ip + 1)) {
5197 /* From the INITOBJ case */
5209 }
5213 }
5214 load_error:
5216 }
5218 static gboolean
5220 {
5225 }
5227 }
5229 /*
5230 * mono_method_to_ir:
5231 *
5232 * Translate the .net IL into linear IR.
5233 */
5234 int
5235 mono_method_to_ir (MonoCompile *cfg, MonoMethod *method, MonoBasicBlock *start_bblock, MonoBasicBlock *end_bblock,
5238 {
5239 MonoError error;
5259 guint num_args;
5262 MonoDeclSecurityActions actions;
5268 /* serialization and xdomain stuff may need access to private fields and methods */
5278 /* still some type unsafety issues in marshal wrappers... (unknown is PtrToStructure) */
5296 /*
5297 * Methods without init_locals set could cause asserts in various passes
5298 * (#497220).
5299 */
5306 }
5308 /* SkipVerification is not allowed if core-clr is enabled */
5312 }
5332 }
5340 }
5342 cfg->cil_offset_to_bb = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoBasicBlock*) * header->code_size);
5363 /* ENTRY BLOCK */
5369 /* EXIT BLOCK */
5381 }
5382 /* handle exception clauses */
5403 /* todo: is a fault block unsafe to optimize? */
5406 }
5409 /*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);
5410 while (p < end) {
5411 printf ("%s", mono_disasm_code_one (NULL, method, p, &p));
5412 }*/
5413 /* catch and filter blocks get the exception object on the stack */
5418 /* mostly like handle_stack_args (), but just sets the input args */
5419 /* printf ("handling clause at IL_%04x\n", clause->handler_offset); */
5424 /*
5425 * Add a dummy use for the exvar so its liveness info will be
5426 * correct.
5427 */
5437 /* The filter block shares the exvar with the handler block */
5441 }
5442 }
5448 /*
5449 * In shared generic code with catch
5450 * clauses containing type variables
5451 * the exception handling code has to
5452 * be able to get to the rgctx.
5453 * Therefore we have to make sure that
5454 * the vtable/mrgctx argument (for
5455 * static or generic methods) or the
5456 * "this" argument (for non-static
5457 * methods) are live.
5458 */
5467 }
5468 }
5469 }
5475 }
5477 /* FIRST CODE BLOCK */
5490 }
5491 }
5497 /* at this point having security doesn't mean we have any code to generate */
5499 /* Only Demand, NonCasDemand and DemandChoice requires code generation.
5500 * And we do not want to enter the next section (with allocation) if we
5501 * have nothing to generate */
5503 }
5505 /* we must Demand SecurityPermission.Unmanaged before P/Invoking */
5512 /* unless the method or it's class has the [SuppressUnmanagedCodeSecurity] attribute */
5515 }
5523 }
5526 }
5528 /* not a P/Invoke after all */
5530 }
5531 }
5533 if ((init_locals || (cfg->method == method && (cfg->opt & MONO_OPT_SHARED))) || cfg->compile_aot || security || pinvoke) {
5534 /* we use a separate basic block for the initialization code */
5547 }
5549 /* at this point we know, if security is TRUE, that some code needs to be generated */
5556 /* Add code for SecurityAction.Demand */
5559 /* Calls static void SecurityManager.InternalDemand (byte* permissions, int size); */
5561 }
5563 /* CLR 1.x uses a .noncasdemand (but 2.x doesn't) */
5564 /* For Mono we re-route non-CAS Demand to Demand (as the managed code must deal with it anyway) */
5567 /* Calls static void SecurityManager.InternalDemand (byte* permissions, int size); */
5569 }
5571 /* New in 2.0, Demand must succeed for one of the permissions (i.e. not all) */
5574 /* Calls static void SecurityManager.InternalDemandChoice (byte* permissions, int size); */
5576 }
5577 }
5579 /* we must Demand SecurityPermission.Unmanaged before p/invoking */
5582 }
5585 /* check if this is native code, e.g. an icall or a p/invoke */
5592 /* if this ia a native call then it can only be JITted from platform code */
5598 }
5599 }
5600 }
5601 }
5602 }
5605 UNVERIFIED;
5609 UNVERIFIED;
5610 }
5617 UNVERIFIED;
5618 }
5621 /* We force the vtable variable here for all shared methods
5622 for the possibility that they might show up in a stack
5623 trace where their exact instantiation is needed. */
5630 /* FIXME: Is there a better way to do this?
5631 We need the variable live for the duration
5632 of the whole method. */
5634 }
5635 }
5637 /* add a check for this != NULL to inlined methods */
5644 }
5651 UNVERIFIED;
5652 }
5654 }
5656 /* we use a spare stack slot in SWITCH and NEWOBJ and others */
5657 stack_start = sp = mono_mempool_alloc0 (cfg->mempool, sizeof (MonoInst*) * (header->max_stack + 1));
5665 else
5677 }
5687 }
5698 }
5707 }
5710 }
5711 }
5729 }
5733 }
5734 }
5735 /*
5736 * Sequence points are points where the debugger can place a breakpoint.
5737 * Currently, we generate these automatically at points where the IL
5738 * stack is empty.
5739 */
5743 }
5751 /* TODO: Use an increment here */
5752 #if defined(TARGET_X86)
5757 #else
5760 #endif
5761 }
5764 printf ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
5770 else
5772 ip++;
5778 else
5780 ip++;
5791 ip++;
5802 ip++;
5814 UNVERIFIED;
5819 }
5846 UNVERIFIED;
5869 }
5875 }
5882 UNVERIFIED;
5945 #ifdef TARGET_POWERPC
5946 /* FIXME: Clean this up */
5949 #endif
5951 /* FIXME: we should really allocate this only late in the compilation process */
5971 }
5977 }
5982 #ifdef TARGET_POWERPC
5983 /* FIXME: Clean this up */
5986 #endif
5988 /* FIXME: we should really allocate this only late in the compilation process */
6008 }
6014 }
6019 sp--;
6034 }
6037 ip++;
6040 #ifdef TARGET_X86
6042 /* we need to pop the value from the x86 FP stack */
6044 #endif
6049 INLINE_FAILURE;
6053 UNVERIFIED;
6055 /* FIXME: check the signature matches */
6065 CHECK_CFG_EXCEPTION;
6067 #ifdef MONO_ARCH_USE_OP_TAIL_CALL
6068 {
6072 /* Handle tail calls similarly to calls */
6086 }
6087 #else
6089 /* Prevent arguments from being optimized away */
6096 #endif
6101 }
6128 else
6136 /*
6137 * This is a call through a function pointer using a pinvoke
6138 * signature. Have to create a wrapper and call that instead.
6139 * FIXME: This is very slow, need to create a wrapper at JIT time
6140 * instead based on the signature.
6141 */
6146 }
6154 if ((constrained_call->byval_arg.type == MONO_TYPE_VAR || constrained_call->byval_arg.type == MONO_TYPE_MVAR) && cfg->generic_sharing_context) {
6155 /*
6156 * This is needed since get_method_constrained can't find
6157 * the method in klass representing a type var.
6158 * The type var is guaranteed to be a reference type in this
6159 * case.
6160 */
6165 cmethod = mono_get_method_constrained (image, token, constrained_call, generic_context, &cil_method);
6166 }
6170 }
6177 target_method = mini_get_method_allow_open (method, token, NULL, &(mono_method_get_generic_container (method_definition)->context));
6178 }
6181 METHOD_ACCESS_FAILURE;
6182 }
6188 /* MS.NET seems to silently convert this to a callvirt */
6191 {
6192 /*
6193 * MS.NET accepts non virtual calls to virtual final methods of transparent proxy classes and
6194 * converts to a callvirt.
6195 *
6196 * tests/bug-515884.il is an example of this behavior
6197 */
6198 const int test_flags = METHOD_ATTRIBUTE_VIRTUAL | METHOD_ATTRIBUTE_FINAL | METHOD_ATTRIBUTE_STATIC;
6200 if (!virtual && cmethod->klass->marshalbyref && (cmethod->flags & test_flags) == expected_flags && cfg->method->wrapper_type == MONO_WRAPPER_NONE)
6202 }
6226 }
6227 }
6235 INLINE_FAILURE;
6236 CHECK_CFG_EXCEPTION;
6237 }
6241 }
6244 UNVERIFIED;
6251 //g_assert (!virtual || fsig->hasthis);
6256 /*
6257 * We have the `constrained.' prefix opcode.
6258 */
6260 /*
6261 * The type parameter is instantiated as a valuetype,
6262 * but that type doesn't override the method we're
6263 * calling, so we need to box `this'.
6264 */
6267 sp [0] = handle_box (cfg, ins, constrained_call, mono_class_check_context_used (constrained_call));
6268 CHECK_CFG_EXCEPTION;
6272 /*
6273 * The type parameter is instantiated as a reference
6274 * type. We have a managed pointer on the stack, so
6275 * we need to dereference it here.
6276 */
6283 }
6286 UNVERIFIED;
6288 /*
6289 * If the callee is a shared method, then its static cctor
6290 * might not get called after the call was patched.
6291 */
6292 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)) {
6295 }
6303 /*
6304 * Pass vtable iff target method might
6305 * be shared, which means that sharing
6306 * is enabled for its class and its
6307 * context is sharable (and it's not a
6308 * generic method).
6309 */
6313 }
6325 }
6333 /* Generic method interface
6334 calls are resolved via a
6335 helper function and don't
6336 need an imt. */
6339 }
6341 /*
6342 * If a shared method calls another
6343 * shared method then the caller must
6344 * have a generic sharing context
6345 * because the magic trampoline
6346 * requires it. FIXME: We shouldn't
6347 * have to force the vtable/mrgctx
6348 * variable here. Instead there
6349 * should be a flag in the cfg to
6350 * request a generic sharing context.
6351 */
6355 }
6365 }
6366 }
6372 /*
6373 * emit_get_rgctx_method () calls mono_class_vtable () so check
6374 * for type load errors before.
6375 */
6378 }
6387 }
6388 }
6396 }
6401 /* Calling virtual generic methods */
6412 /* Prevent inlining of methods that contain indirect calls */
6413 INLINE_FAILURE;
6415 #if MONO_ARCH_HAVE_GENERALIZED_IMT_THUNK && defined(MONO_ARCH_GSHARED_SUPPORTED)
6424 #endif
6425 {
6430 /* FIXME: This should be a managed pointer */
6443 }
6448 CHECK_CFG_EXCEPTION;
6453 }
6455 #ifdef MONO_ARCH_USE_OP_TAIL_CALL
6456 supported_tail_call = cmethod && MONO_ARCH_USE_OP_TAIL_CALL (mono_method_signature (method), mono_method_signature (cmethod));
6457 #else
6458 supported_tail_call = cmethod && mono_metadata_signature_equal (mono_method_signature (method), mono_method_signature (cmethod)) && !MONO_TYPE_ISSTRUCT (mono_method_signature (cmethod)->ret);
6459 #endif
6461 /* Tail prefix */
6462 /* FIXME: runtime generic context pointer for jumps? */
6463 /* FIXME: handle this for generic sharing eventually */
6464 if ((ins_flag & MONO_INST_TAILCALL) && !cfg->generic_sharing_context && !vtable_arg && cmethod && (*ip == CEE_CALL) && supported_tail_call) {
6467 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
6468 INLINE_FAILURE;
6470 #ifdef MONO_ARCH_USE_OP_TAIL_CALL
6471 /* Handle tail calls similarly to calls */
6473 #else
6479 /*
6480 * We implement tail calls by storing the actual arguments into the
6481 * argument variables, then emitting a CEE_JMP.
6482 */
6484 /* Prevent argument from being register allocated */
6487 }
6488 #endif
6497 CHECK_CFG_EXCEPTION;
6499 /* skip CEE_RET as well */
6503 }
6505 /* Conversion to a JIT intrinsic */
6506 if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_method (cfg, cmethod, fsig, sp))) {
6510 sp++;
6511 }
6513 CHECK_CFG_EXCEPTION;
6518 }
6520 /* Inlining */
6522 (!virtual || !(cmethod->flags & METHOD_ATTRIBUTE_VIRTUAL) || MONO_METHOD_IS_FINAL (cmethod)) &&
6530 /* Prevent inlining of methods that call wrappers */
6531 INLINE_FAILURE;
6534 }
6536 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, dont_inline, allways))) {
6542 /* *sp is already set by inline_method */
6543 sp++;
6548 }
6549 }
6553 /* Tail recursion elimination */
6554 if ((cfg->opt & MONO_OPT_TAILC) && *ip == CEE_CALL && cmethod == method && ip [5] == CEE_RET && !vtable_arg) {
6558 /* Prevent inlining of methods with tail calls (the call stack would be altered) */
6559 INLINE_FAILURE;
6561 /* keep it simple */
6565 }
6577 /* skip the CEE_RET, too */
6580 else
6585 }
6586 }
6588 /* Generic sharing */
6589 /* FIXME: only do this for generic methods if
6590 they are not shared! */
6596 INLINE_FAILURE;
6601 /*
6602 * We are compiling a call to a
6603 * generic method from shared code,
6604 * which means that we have to look up
6605 * the method in the rgctx and do an
6606 * indirect call.
6607 */
6608 addr = emit_get_rgctx_method (cfg, context_used, cmethod, MONO_RGCTX_INFO_GENERIC_METHOD_CODE);
6609 }
6611 /* Indirect calls */
6619 else
6620 /* FIXME: what the hell is this??? */
6624 /* Prevent inlining of methods with indirect calls */
6625 INLINE_FAILURE;
6637 /*
6638 * Instead of emitting an indirect call, emit a direct call
6639 * with the contents of the aotconst as the patch info.
6640 */
6641 ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR, addr->inst_p0, fsig, sp);
6643 } else if (addr->opcode == OP_GOT_ENTRY && addr->inst_right->inst_c1 == MONO_PATCH_INFO_ICALL_ADDR) {
6644 ins = (MonoInst*)mono_emit_abs_call (cfg, MONO_PATCH_INFO_ICALL_ADDR, addr->inst_right->inst_left, fsig, sp);
6648 }
6649 }
6653 CHECK_CFG_EXCEPTION;
6658 }
6660 /* Array methods */
6672 }
6675 EMIT_NEW_STORE_MEMBASE_TYPE (cfg, ins, fsig->params [fsig->param_count - 1], addr->dreg, 0, sp [fsig->param_count]->dreg);
6692 }
6694 CHECK_CFG_EXCEPTION;
6699 }
6706 CHECK_CFG_EXCEPTION;
6711 }
6713 /* Common call */
6714 INLINE_FAILURE;
6719 ins = (MonoInst*)mono_emit_method_call_full (cfg, cmethod, fsig, sp, virtual ? sp [0] : NULL, imt_arg);
6721 ins = (MonoInst*)mono_emit_method_call_full (cfg, cmethod, fsig, sp, virtual ? sp [0] : NULL, NULL);
6722 }
6727 CHECK_CFG_EXCEPTION;
6732 }
6735 /* return from inlined method */
6736 /*
6737 * If in_count == 0, that means the ret is unreachable due to
6738 * being preceeded by a throw. In that case, inline_method () will
6739 * handle setting the return value
6740 * (test case: test_0_inline_throw ()).
6741 */
6746 //g_assert (returnvar != -1);
6749 }
6755 /*
6756 * Place a seq point here too even through the IL stack is not
6757 * empty, so a step over on
6758 * call <FOO>
6759 * ret
6760 * will work correctly.
6761 */
6764 }
6781 }
6783 #ifdef MONO_ARCH_SOFT_FLOAT
6793 }
6794 #else
6796 #endif
6797 }
6798 }
6799 }
6801 UNVERIFIED;
6803 ip++;
6812 ip++;
6822 }
6840 ip++;
6842 ip++;
6852 ip++;
6863 }
6882 UNVERIFIED;
6883 ip ++;
6887 sp--;
6897 }
6904 #if SIZEOF_REGISTER == 4
6906 /* Convert it to OP_LCOMPARE */
6914 }
6915 #endif
6931 }
6945 ip++;
6963 gboolean use_op_switch;
6971 UNVERIFIED;
6984 }
6987 /*
6988 * Link the current bb with the targets as well, so handle_stack_args
6989 * will set their in_stack correctly.
6990 */
6998 }
7012 #ifdef TARGET_ARM
7013 /* ARM implements SWITCH statements differently */
7014 /* FIXME: Make it use the generic implementation */
7017 #endif
7034 else
7037 #if SIZEOF_REGISTER == 8
7038 /* The upper word might not be zero, and we add it to a 64 bit address later */
7040 #endif
7050 }
7052 /* FIXME: Use load_memindex */
7056 }
7060 }
7085 }
7111 #if HAVE_WRITE_BARRIERS
7112 if (*ip == CEE_STIND_REF && method->wrapper_type != MONO_WRAPPER_WRITE_BARRIER && !((sp [1]->opcode == OP_PCONST) && (sp [1]->inst_p0 == 0))) {
7114 /* insert call to write barrier */
7118 }
7119 #endif
7136 /* Use the immediate opcodes if possible */
7145 }
7146 }
7151 ip++;
7176 /* FIXME: Pass opcode to is_inst_imm */
7178 /* Use the immediate opcodes if possible */
7179 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)) {
7186 #if SIZEOF_REGISTER == 8
7188 #else
7191 #endif
7192 }
7193 else
7197 /* Might be followed by an instruction added by ADD_WIDEN_OP */
7200 }
7201 }
7205 ip++;
7222 /* Special case this earlier so we have long constants in the IR */
7227 #if SIZEOF_REGISTER == 8
7230 else
7232 #else
7236 else
7238 #endif
7240 }
7243 }
7244 ip++;
7258 }
7259 ip++;
7271 }
7272 ip++;
7290 CHECK_CFG_EXCEPTION;
7291 ip++;
7301 ip++;
7322 #if HAVE_WRITE_BARRIERS
7328 }
7329 #endif
7332 }
7347 /* Optimize the common ldobj+stloc combination */
7362 }
7372 }
7374 /* Optimize the ldobj+stobj combination */
7375 /* The reference case ends up being a load+store anyway */
7376 if (((ip [5] == CEE_STOBJ) && ip_in_bb (cfg, bblock, ip + 5) && read32 (ip + 6) == token) && !generic_class_is_reference_type (cfg, klass)) {
7379 sp --;
7386 }
7395 }
7405 }
7417 }
7428 /*
7429 * Avoid relocations in AOT and save some space by using a
7430 * version of helper_ldstr specialized to mscorlib.
7431 */
7435 /* Avoid creating the string object */
7439 }
7440 }
7441 else
7446 }
7453 }
7454 }
7455 }
7457 sp++;
7463 MonoInst this_ins;
7486 INLINE_FAILURE;
7487 CHECK_CFG_EXCEPTION;
7490 }
7509 }
7510 }
7511 }
7516 /*
7517 * Generate smaller code for the common newobj <exception> instruction in
7518 * argument checking code.
7519 */
7546 }
7551 }
7553 /* move the args to allow room for 'this' in the first position */
7557 }
7559 /* check_call_signature () requires sp[0] to be set */
7563 UNVERIFIED;
7573 /* Avoid varargs in the common case */
7580 else
7585 /* we simply pass a null pointer */
7587 /* now call the string ctor */
7599 /*
7600 * The code generated by mini_emit_virtual_call () expects
7601 * iargs [0] to be a boxed instance, but luckily the vcall
7602 * will be transformed into a normal call there.
7603 */
7612 /*
7613 * TypeInitializationExceptions thrown from the mono_runtime_class_init
7614 * call in mono_jit_runtime_invoke () can abort the finalizer thread.
7615 * As a workaround, we call class cctors before allocating objects.
7616 */
7617 if (mini_field_access_needs_cctor_run (cfg, method, vtable) && !(g_slist_find (class_inits, vtable))) {
7618 mono_emit_abs_call (cfg, MONO_PATCH_INFO_CLASS_INIT, vtable->klass, helper_sig_class_init_trampoline, NULL);
7620 printf ("class %s.%s needs init call for ctor\n", cmethod->klass->name_space, cmethod->klass->name);
7622 }
7626 }
7632 /* Now call the actual ctor */
7633 /* Avoid virtual calls to ctors if possible */
7638 if (cmethod && (cfg->opt & MONO_OPT_INTRINS) && (ins = mini_emit_inst_for_ctor (cfg, cmethod, fsig, sp))) {
7642 sp++;
7643 }
7645 CHECK_CFG_EXCEPTION;
7656 if ((costs = inline_method (cfg, cmethod, fsig, sp, ip, cfg->real_offset, dont_inline, FALSE))) {
7662 INLINE_FAILURE;
7664 }
7675 INLINE_FAILURE;
7678 }
7679 }
7682 /* Valuetype */
7686 }
7687 else
7693 }
7702 UNVERIFIED;
7710 /* obj */
7713 /* klass */
7720 } else if (!context_used && (klass->marshalbyref || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
7739 }
7742 CHECK_CFG_EXCEPTION;
7746 }
7756 UNVERIFIED;
7764 /* obj */
7767 /* klass */
7771 sp++;
7774 } else if (!context_used && (klass->marshalbyref || klass->flags & TYPE_ATTRIBUTE_INTERFACE)) {
7793 }
7796 CHECK_CFG_EXCEPTION;
7800 }
7802 }
7817 /* CASTCLASS FIXME kill this huge slice of duplicated code*/
7821 /* obj */
7823 /* klass */
7850 CHECK_CFG_EXCEPTION;
7854 }
7856 }
7863 }
7865 /* UNBOX */
7871 /* LDOBJ */
7877 }
7898 }
7901 UNVERIFIED;
7903 UNVERIFIED;
7904 /* frequent check in generic code: box (struct), brtrue */
7906 ip + 5 < end && ip_in_bb (cfg, bblock, ip + 5) && (ip [5] == CEE_BRTRUE || ip [5] == CEE_BRTRUE_S)) {
7907 /*printf ("box-brtrue opt at 0x%04x in %s\n", real_offset, method->name);*/
7912 ip++;
7914 ip++;
7917 ip++;
7920 }
7925 /*
7926 * This leads to some inconsistency, since the two bblocks are
7927 * not really connected, but it is needed for handling stack
7928 * arguments correctly (See test_0_box_brtrue_opt_regress_81102).
7929 * FIXME: This should only be needed if sp != stack_start, but that
7930 * doesn't work for some reason (test failure in mcs/tests on x86).
7931 */
7937 }
7941 }
7945 CHECK_CFG_EXCEPTION;
7949 }
7973 }
7977 }
7983 guint foffset;
7991 }
7993 UNVERIFIED;
7995 UNVERIFIED;
8001 }
8004 }
8008 FIELD_ACCESS_FAILURE;
8011 /* XXX this is technically required but, so far (SL2), no [SecurityCritical] types (not many exists) have
8012 any visible *instance* field (in fact there's a single case for a static field in Marshal) XXX
8013 if (mono_security_get_mode () == MONO_SECURITY_MODE_CORE_CLR)
8014 ensure_method_is_allowed_to_access_field (cfg, method, field, bblock, ip);
8015 */
8020 UNVERIFIED;
8021 if ((klass->marshalbyref && !MONO_CHECK_THIS (sp [0])) || klass->contextbound || klass == mono_defaults.marshalbyrefobject_class) {
8043 }
8052 #if HAVE_WRITE_BARRIERS
8053 if (mini_type_to_stind (cfg, field->type) == CEE_STIND_REF && !(sp [1]->opcode == OP_PCONST && sp [1]->inst_c0 == 0)) {
8054 /* insert call to write barrier */
8065 }
8066 #endif
8069 }
8073 }
8075 if ((klass->marshalbyref && !MONO_CHECK_THIS (sp [0])) || klass->contextbound || klass == mono_defaults.marshalbyrefobject_class) {
8076 MonoMethod *wrapper = (*ip == CEE_LDFLDA) ? mono_marshal_get_ldflda_wrapper (field->type) : mono_marshal_get_ldfld_wrapper (field->type);
8082 EMIT_NEW_ICONST (cfg, iargs [3], klass->valuetype ? field->offset - sizeof (MonoObject) : field->offset);
8097 }
8102 /* Have to compute the address of the variable */
8107 else
8112 }
8130 }
8131 }
8135 }
8141 gboolean is_special_static;
8149 }
8150 else
8156 FIELD_ACCESS_FAILURE;
8158 /* if the class is Critical then transparent code cannot access it's fields */
8162 /*
8163 * We can only support shared generic static
8164 * field access on architectures where the
8165 * trampoline code has been extended to handle
8166 * the generic class init.
8167 */
8168 #ifndef MONO_ARCH_VTABLE_REG
8170 #endif
8177 /* The special_static_fields field is init'd in mono_class_vtable, so it needs
8178 * to be called here.
8179 */
8183 }
8191 /* Generate IR to compute the field address */
8192 if (is_special_static && ((gsize)addr & 0x80000000) == 0 && mono_get_thread_intrinsic (cfg) && !(cfg->opt & MONO_OPT_SHARED) && !context_used) {
8193 /*
8194 * Fast access to TLS data
8195 * Inline version of get_thread_static_data () in
8196 * threads.c.
8197 */
8198 guint32 offset;
8202 // offset &= 0x7fffffff;
8203 // idx = (offset >> 24) - 1;
8204 // return ((char*) thread->static_data [idx]) + (offset & 0xffffff);
8209 MONO_EMIT_NEW_LOAD_MEMBASE (cfg, static_data_reg, thread_ins->dreg, G_STRUCT_OFFSET (MonoInternalThread, static_data));
8214 /* For TLS variables, this will return the TLS offset */
8237 }
8250 }
8255 /*
8256 g_print ("sharing static field access in %s.%s.%s - depth %d offset %d\n",
8257 method->klass->name_space, method->klass->name, method->name,
8258 depth, field->offset);
8259 */
8264 /*
8265 * The pointer we're computing here is
8266 *
8267 * super_info.static_data + field->offset
8268 */
8277 }
8290 if (mini_field_access_needs_cctor_run (cfg, method, vtable) && !(g_slist_find (class_inits, vtable))) {
8291 mono_emit_abs_call (cfg, MONO_PATCH_INFO_CLASS_INIT, vtable->klass, helper_sig_class_init_trampoline, NULL);
8293 printf ("class %s.%s needs init call for %s\n", klass->name_space, klass->name, mono_field_get_name (field));
8298 /* This makes so that inline cannot trigger */
8299 /* .cctors: too many apps depend on them */
8300 /* running with a specific order... */
8302 INLINE_FAILURE;
8307 }
8308 }
8309 }
8314 else
8320 }
8321 }
8323 /* Generate IR to do the actual load/store operation */
8332 sp--;
8343 }
8350 }
8351 /* printf ("RO-FIELD %s.%s:%s\n", klass->name_space, klass->name, mono_field_get_name (field));*/
8357 sp++;
8361 sp++;
8366 sp++;
8370 sp++;
8375 sp++;
8379 sp++;
8385 #ifndef HAVE_MOVING_COLLECTOR
8391 #endif
8394 sp++;
8399 sp++;
8407 }
8408 }
8419 }
8420 }
8424 }
8432 /* FIXME: should check item at sp [1] is compatible with the type of the store. */
8434 #if HAVE_WRITE_BARRIERS
8438 /* insert call to write barrier */
8442 }
8443 #endif
8449 /*
8450 * Array opcodes
8451 */
8456 guint32 field_token;
8477 }
8482 /* FIXME: we cannot get a managed
8483 allocator because we can't get the
8484 open generic class's vtable. We
8485 have the same problem in
8486 handle_alloc(). This
8487 needs to be solved so that we can
8488 have managed allocs of shared
8489 generic classes. */
8490 /*
8491 MonoVTable *array_class_vtable = mono_class_vtable (cfg->domain, array_class);
8492 MonoMethod *managed_alloc = mono_gc_get_managed_array_allocator (array_class_vtable, 1);
8493 */
8496 /* FIXME: Decompose later to help abcrem */
8498 /* vtable */
8501 /* array len */
8506 else
8510 /* Decompose now to avoid problems with references to the domainvar */
8519 /* Decompose later since it is needed by abcrem */
8534 /* Needed so mono_emit_load_get_addr () gets called */
8536 }
8537 }
8544 /*
8545 * we inline/optimize the initialization sequence if possible.
8546 * we should also allocate the array as not cleared, since we spend as much time clearing to 0 as initializing
8547 * for small sizes open code the memcpy
8548 * ensure the rva field is big enough
8549 */
8550 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))) {
8555 EMIT_NEW_BIALU_IMM (cfg, iargs [0], OP_PADD_IMM, add_reg, ins->dreg, G_STRUCT_OFFSET (MonoArray, vector));
8557 EMIT_NEW_AOTCONST_TOKEN (cfg, iargs [1], MONO_PATCH_INFO_RVA, method->klass->image, GPOINTER_TO_UINT(field_token), STACK_PTR, NULL);
8560 }
8564 }
8567 }
8572 UNVERIFIED;
8582 ip ++;
8590 UNVERIFIED;
8596 /* we need to make sure that this array is exactly the type it needs
8597 * to be for correctness. the wrappers are lax with their usage
8598 * so we need to ignore them here
8599 */
8604 }
8634 }
8635 else
8639 UNVERIFIED;
8646 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + G_STRUCT_OFFSET (MonoArray, vector);
8653 }
8657 else
8660 }
8683 }
8684 else
8688 UNVERIFIED;
8690 /* storing a NULL doesn't need any of the complex checks in stelemref */
8697 UNVERIFIED;
8699 UNVERIFIED;
8710 int offset = (mono_class_array_element_size (klass) * sp [1]->inst_c0) + G_STRUCT_OFFSET (MonoArray, vector);
8717 }
8718 }
8722 else
8726 }
8741 }
8759 // FIXME:
8762 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
8772 // FIXME:
8777 }
8778 EMIT_NEW_LOAD_MEMBASE (cfg, ins, OP_LOAD_MEMBASE, dreg, src->dreg, G_STRUCT_OFFSET (MonoTypedRef, value));
8783 }
8798 loc = mono_compile_create_var (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL);
8806 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, klass), const_ins->dreg);
8807 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_ins->dreg, G_STRUCT_OFFSET (MonoClass, byval_arg));
8808 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
8814 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, klass), const_reg);
8815 MONO_EMIT_NEW_BIALU_IMM (cfg, OP_ADD_IMM, type_reg, const_reg, G_STRUCT_OFFSET (MonoClass, byval_arg));
8816 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, type), type_reg);
8818 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, type), &klass->byval_arg);
8819 MONO_EMIT_NEW_STORE_MEMBASE_IMM (cfg, OP_STOREP_MEMBASE_IMM, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, klass), klass);
8820 }
8821 MONO_EMIT_NEW_STORE_MEMBASE (cfg, OP_STOREP_MEMBASE_REG, addr->dreg, G_STRUCT_OFFSET (MonoTypedRef, value), sp [0]->dreg);
8829 }
8831 gpointer handle;
8845 }
8848 }
8855 /* This case handles ldtoken
8856 of an open type, like for
8857 typeof(Gen<>). */
8860 /* If we get a MONO_TYPE_CLASS
8861 then we need to provide the
8862 open type, not an
8863 instantiation of it. */
8866 else
8872 else
8874 }
8884 else
8898 }
8919 /* Special case for static synchronized wrappers */
8920 EMIT_NEW_TYPE_FROM_HANDLE_CONST (cfg, ins, tclass->image, tclass->type_token, generic_context);
8922 /* FIXME: n is not a normal token */
8925 }
8928 }
8931 }
8944 MONO_RGCTX_INFO_TYPE);
8953 }
8958 }
8962 }
8963 }
8968 }
8974 ip++;
8987 ip++;
8990 /*
8991 * Control will leave the method so empty the stack, otherwise
8992 * the next basic block will start with a nonempty stack.
8993 */
8995 sp--;
8996 }
9008 }
9010 /* empty the stack */
9012 sp--;
9013 }
9015 /*
9016 * If this leave statement is in a catch block, check for a
9017 * pending exception, and rethrow it if necessary.
9018 * We avoid doing this in runtime invoke wrappers, since those are called
9019 * by native code which excepts the wrapper to catch all exceptions.
9020 */
9024 /*
9025 * Use <= in the final comparison to handle clauses with multiple
9026 * leave statements, like in bug #78024.
9027 * The ordering of the exception clauses guarantees that we find the
9028 * innermost clause.
9029 */
9030 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) {
9034 /*
9035 MonoInst *load;
9037 NEW_TEMPLOAD (cfg, load, mono_find_exvar_for_offset (cfg, clause->handler_offset)->inst_c0);
9038 */
9044 /*
9045 * Currently, we allways rethrow the abort exception, despite the
9046 * fact that this is not correct. See thread6.cs for an example.
9047 * But propagating the abort exception is more important than
9048 * getting the sematics right.
9049 */
9056 }
9057 }
9076 /*
9077 * Link the finally bblock with the target, since it will
9078 * conceptually branch there.
9079 * FIXME: Have to link the bblock containing the endfinally.
9080 */
9083 }
9084 }
9086 }
9097 else
9101 }
9103 /*
9104 * Mono specific opcodes
9105 */
9113 gpointer func;
9132 }
9134 gpointer ptr;
9141 if (cfg->compile_aot && (method->wrapper_type == MONO_WRAPPER_MANAGED_TO_NATIVE) && (strstr (method->name, "__icall_wrapper_") == method->name)) {
9151 /* Will be transformed into an AOTCONST later */
9156 }
9157 }
9158 /* FIXME: Generalize this */
9164 }
9169 /* Can't embed random pointers into AOT code */
9172 }
9175 gpointer ptr;
9189 }
9193 }
9200 // FIXME:
9206 }
9223 }
9236 /*
9237 * Similar to LDOBJ, but instead load the unmanaged
9238 * representation of the vtype to the stack.
9239 */
9248 {
9263 }
9266 /*
9267 * Same as RET, but return the native representation of a vtype
9268 * to the caller.
9269 */
9285 }
9289 UNVERIFIED;
9298 }
9309 else
9315 }
9318 #ifdef MONO_ARCH_HAVE_LMF_OPS
9322 #endif
9352 /* It would be easier to call a trampoline, but that would put an
9353 * extra frame on the stack, confusing exception handling. So
9354 * implement it inline using an opcode for now.
9355 */
9358 cfg->dyn_call_var = mono_compile_create_var (cfg, &mono_defaults.int_class->byval_arg, OP_LOCAL);
9359 /* prevent it from being register allocated */
9361 }
9363 /* Has to use a call inst since it local regalloc expects it */
9371 #ifdef MONO_ARCH_DYN_CALL_PARAM_AREA
9373 #endif
9379 }
9383 }
9385 }
9391 /* somewhat similar to LDTOKEN */
9394 vtvar = mono_compile_create_var (cfg, &mono_defaults.argumenthandle_class->byval_arg, OP_LOCAL);
9405 }
9413 /*
9414 * The following transforms:
9415 * CEE_CEQ into OP_CEQ
9416 * CEE_CGT into OP_CGT
9417 * CEE_CGT_UN into OP_CGT_UN
9418 * CEE_CLT into OP_CLT
9419 * CEE_CLT_UN into OP_CLT_UN
9420 */
9429 if ((sp [0]->type == STACK_I8) || ((SIZEOF_REGISTER == 8) && ((sp [0]->type == STACK_PTR) || (sp [0]->type == STACK_OBJ) || (sp [0]->type == STACK_MP))))
9433 else
9441 /*
9442 * The backends expect the fceq opcodes to do the
9443 * comparison too.
9444 */
9448 }
9453 }
9457 gboolean needs_static_rgctx_invoke;
9476 METHOD_ACCESS_FAILURE;
9480 INLINE_FAILURE;
9481 CHECK_CFG_EXCEPTION;
9484 }
9486 /*
9487 * Optimize the common case of ldftn+delegate creation
9488 */
9489 if ((sp > stack_start) && (ip + 6 + 5 < end) && ip_in_bb (cfg, bblock, ip + 6) && (ip [6] == CEE_NEWOBJ)) {
9490 MonoMethod *ctor_method = mini_get_method (cfg, method, read32 (ip + 7), NULL, generic_context);
9502 #if defined(MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE) && !defined(HAVE_WRITE_BARRIERS)
9503 /* FIXME: SGEN support */
9509 g_print ("converting (in B%d: stack: %d) %s", bblock->block_num, (int)(sp - stack_start), mono_disasm_code_one (NULL, method, ip, NULL));
9511 sp --;
9513 CHECK_CFG_EXCEPTION;
9515 sp ++;
9517 }
9518 #endif
9519 }
9520 }
9529 }
9546 INLINE_FAILURE;
9547 CHECK_CFG_EXCEPTION;
9550 }
9560 else
9566 }
9593 UNVERIFIED;
9617 }
9623 }
9631 UNVERIFIED;
9640 UNVERIFIED;
9642 /*
9643 * Inlining this into a loop in a parent could lead to
9644 * stack overflows which is different behavior than the
9645 * non-inlined case, thus disable inlining in this case.
9646 */
9669 UNVERIFIED;
9681 ((ip - header->code) > clause->data.filter_offset && (ip - header->code) <= clause->handler_offset) &&
9685 }
9686 }
9689 UNVERIFIED;
9692 }
9695 /* FIXME: record alignment? we can assume 1 for now */
9706 /* Can't inline tail calls at this time */
9719 else
9729 else
9740 if ((ip [1] == CEE_CPBLK) && (cfg->opt & MONO_OPT_INTRINS) && (sp [2]->opcode == OP_ICONST) && ((n = sp [2]->inst_c0) <= sizeof (gpointer) * 5)) {
9742 } 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)) {
9743 /* emit_memset only works when val == 0 */
9755 }
9756 }
9760 }
9767 /* we ignore the no-nullcheck for now since we
9768 * really do it explicitly only when doing callvirt->call
9769 */
9778 if (MONO_OFFSET_IN_HANDLER (clause, ip - header->code) && !(clause->flags & MONO_EXCEPTION_CLAUSE_FINALLY)) {
9781 }
9782 }
9801 }
9803 guint32 align;
9809 if (mono_metadata_token_table (token) == MONO_TABLE_TYPESPEC && !method->klass->image->dynamic) {
9817 }
9822 }
9829 // FIXME:
9832 src_var = mono_compile_create_var_for_vreg (cfg, &mono_defaults.typed_reference_class->byval_arg, OP_LOCAL, sp [0]->dreg);
9834 EMIT_NEW_LOAD_MEMBASE_TYPE (cfg, ins, &mono_defaults.typehandle_class->byval_arg, src->dreg, G_STRUCT_OFFSET (MonoTypedRef, type));
9838 }
9849 UNVERIFIED;
9853 UNVERIFIED;
9854 }
9856 }
9859 UNVERIFIED;
9863 UNVERIFIED;
9864 }
9865 }
9867 UNVERIFIED;
9880 }
9884 }
9887 }
9889 #if defined(TARGET_POWERPC) || defined(TARGET_X86)
9891 /* FIXME: The plt slots require a GOT var even if the method doesn't use it */
9893 #endif
9928 }
9929 }
9930 }
9933 /* Emit initialization for ref vars */
9934 // FIXME: Avoid duplication initialization for IL locals.
9940 }
9941 }
9943 /* Add a sequence point for method entry/exit events */
9949 }
9961 }
9962 }
9970 /* Method is too large */
9978 }
9987 exception_exit:
9991 inline_failure:
9994 load_error:
9998 unverified:
10002 cleanup:
10008 }
10010 static int
10012 {
10026 }
10029 }
10033 int
10035 {
10097 #if defined(TARGET_X86) || defined (TARGET_AMD64)
10102 #endif
10103 #if defined(TARGET_AMD64)
10106 #endif
10117 }
10120 }
10122 static int
10124 {
10150 }
10153 }
10155 static int
10157 {
10176 }
10179 }
10181 int
10183 {
10184 // FIXME: Add a MONO_ARCH_HAVE_LOAD_MEM macro
10185 #if defined(TARGET_X86) || defined(TARGET_AMD64)
10197 #if SIZEOF_REGISTER == 8
10200 #endif
10201 }
10202 #endif
10205 }
10209 {
10210 #if defined(TARGET_X86)
10242 }
10243 #endif
10245 #if defined(TARGET_AMD64)
10246 if (!((store_opcode == OP_STORE_MEMBASE_REG) || (store_opcode == OP_STOREI4_MEMBASE_REG) || (store_opcode == OP_STOREI8_MEMBASE_REG)))
10297 }
10298 #endif
10301 }
10305 {
10306 #if defined(TARGET_X86) || defined(TARGET_AMD64)
10314 }
10315 #endif
10318 }
10322 {
10323 #ifdef TARGET_X86
10324 /* FIXME: This has sign extension issues */
10325 /*
10326 if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
10327 return OP_X86_COMPARE_MEMBASE8_IMM;
10328 */
10330 if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
10342 }
10343 #endif
10345 #ifdef TARGET_AMD64
10346 /* FIXME: This has sign extension issues */
10347 /*
10348 if ((opcode == OP_ICOMPARE_IMM) && (load_opcode == OP_LOADU1_MEMBASE))
10349 return OP_X86_COMPARE_MEMBASE8_IMM;
10350 */
10357 /* FIXME: This only works for 32 bit immediates
10358 case OP_COMPARE_IMM:
10359 case OP_LCOMPARE_IMM:
10360 if ((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI8_MEMBASE))
10361 return OP_AMD64_COMPARE_MEMBASE_IMM;
10362 */
10376 }
10377 #endif
10380 }
10384 {
10385 #ifdef TARGET_X86
10386 if (!((load_opcode == OP_LOAD_MEMBASE) || (load_opcode == OP_LOADI4_MEMBASE) || (load_opcode == OP_LOADU4_MEMBASE)))
10403 }
10404 #endif
10406 #ifdef TARGET_AMD64
10447 }
10448 #endif
10451 }
10453 int
10455 {
10457 #if SIZEOF_REGISTER == 4 && !defined(MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS)
10462 #endif
10463 #if defined(MONO_ARCH_EMULATE_MUL_DIV) || defined(MONO_ARCH_EMULATE_DIV)
10469 #endif
10472 }
10473 }
10475 #ifndef DISABLE_JIT
10477 /**
10478 * mono_handle_global_vregs:
10479 *
10480 * Make vregs used in more than one bblock 'global', i.e. allocate a variable
10481 * for them.
10482 */
10483 void
10485 {
10492 #ifdef MONO_ARCH_SIMD_INTRINSICS
10495 #endif
10497 /* Find local vregs used in more than one bb */
10509 gint32 prev_bb;
10539 }
10541 #if SIZEOF_REGISTER == 4
10542 /* In the LLVM case, the long opcodes are not decomposed */
10544 /*
10545 * Since some instructions reference the original long vreg,
10546 * and some reference the two component vregs, it is quite hard
10547 * to determine when it needs to be global. So be conservative.
10548 */
10550 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
10554 }
10556 /*
10557 * Make the component vregs volatile since the optimizations can
10558 * get confused otherwise.
10559 */
10562 }
10563 #endif
10569 /* 0 is a valid block num */
10572 if (((regtype == 'i' && (vreg < MONO_MAX_IREGS))) || (regtype == 'f' && (vreg < MONO_MAX_FREGS)))
10584 mono_compile_create_var_for_vreg (cfg, &mono_defaults.int64_class->byval_arg, OP_LOCAL, vreg);
10587 mono_compile_create_var_for_vreg (cfg, &mono_defaults.double_class->byval_arg, OP_LOCAL, vreg);
10594 }
10595 }
10597 /* Flag as having been used in more than one bb */
10599 }
10600 }
10601 }
10602 }
10604 /* If a variable is used in only one bblock, convert it into a local vreg */
10615 #if SIZEOF_REGISTER == 8
10617 #endif
10618 #if !defined(TARGET_X86) && !defined(MONO_ARCH_SOFT_FLOAT)
10619 /* Enabling this screws up the fp stack on x86 */
10621 #endif
10622 /* Arguments are implicitly global */
10623 /* Putting R4 vars into registers doesn't work currently */
10624 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) {
10625 /*
10626 * Make that the variable's liveness interval doesn't contain a call, since
10627 * that would cause the lvreg to be spilled, making the whole optimization
10628 * useless.
10629 */
10630 /* This is too slow for JIT compilation */
10631 #if 0
10651 }
10652 }
10657 ins_index ++;
10658 }
10662 }
10663 #endif
10669 }
10671 }
10672 }
10674 /*
10675 * Compress the varinfo and vars tables so the liveness computation is faster and
10676 * takes up less space.
10677 */
10689 #if SIZEOF_REGISTER == 4
10691 /* Modify the two component vars too */
10698 }
10699 #endif
10700 }
10701 pos ++;
10702 }
10703 }
10707 }
10709 /**
10710 * mono_spill_global_vars:
10711 *
10712 * Generate spill code for variables which are not allocated to registers,
10713 * and replace vregs with their allocated hregs. *need_local_opts is set to TRUE if
10714 * code is generated which could be optimized by the local optimization passes.
10715 */
10716 void
10718 {
10734 /* FIXME: Move this function to mini.c */
10738 #ifdef MONO_ARCH_SIMD_INTRINSICS
10740 #endif
10742 #if SIZEOF_REGISTER == 4
10743 /* Create MonoInsts for longs */
10770 }
10773 }
10774 }
10775 }
10776 #endif
10778 /* FIXME: widening and truncation */
10780 /*
10781 * As an optimization, when a variable allocated to the stack is first loaded into
10782 * an lvreg, we will remember the lvreg and use it the next time instead of loading
10783 * the variable again.
10784 */
10790 /*
10791 * These arrays contain the first and last instructions accessing a given
10792 * variable.
10793 * Since we emit bblocks in the same order we process them here, and we
10794 * don't split live ranges, these will precisely describe the live range of
10795 * the variable, i.e. the instruction range where a valid value can be found
10796 * in the variables location.
10797 * The live range is computed using the liveness info computed by the liveness pass.
10798 * We can't use vmv->range, since that is an abstract live range, and we need
10799 * one which is instruction precise.
10800 * FIXME: Variables used in out-of-line bblocks have a hole in their live range.
10801 */
10802 /* FIXME: Only do this if debugging info is requested */
10808 /* Add spill loads/stores */
10815 /* Clear vreg_to_lvreg array */
10833 /*
10834 * We handle LDADDR here as well, since it can only be decomposed
10835 * when variable addresses are known.
10836 */
10841 /* Happens on SPARC/S390 where vtypes are passed by reference */
10846 }
10852 NOT_IMPLEMENTED;
10859 }
10863 }
10868 }
10870 /*
10871 * Store opcodes have destbasereg in the dreg, but in reality, it is an
10872 * src register.
10873 * FIXME:
10874 */
10888 else
10898 }
10900 /***************/
10901 /* DREG */
10902 /***************/
10904 g_assert (((ins->dreg == -1) && (regtype == ' ')) || ((ins->dreg != -1) && (regtype != ' ')));
10918 } 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)) {
10919 /*
10920 * Instead of emitting a load+store, use a _membase opcode.
10921 */
10931 }
10934 guint32 lvreg;
10940 /* Invalidate any previous lvreg for this vreg */
10948 }
10953 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET, ins->dreg + 1);
10955 NEW_STORE_MEMBASE (cfg, store_ins, OP_STOREI4_MEMBASE_REG, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET, ins->dreg + 2);
10958 }
10962 /* Try to fuse the store into the instruction itself */
10963 /* FIXME: Add more instructions */
10964 if (!lvreg && ((ins->opcode == OP_ICONST) || ((ins->opcode == OP_I8CONST) && (ins->inst_c0 == 0)))) {
10970 } else if (!lvreg && ((ins->opcode == OP_MOVE) || (ins->opcode == OP_FMOVE) || (ins->opcode == OP_LMOVE))) {
10988 // FIXME: The backends expect the base reg to be in inst_basereg
10995 /* printf ("INS: "); mono_print_ins (ins); */
10996 /* Create a store instruction */
10997 NEW_STORE_MEMBASE (cfg, store_ins, store_opcode, var->inst_basereg, var->inst_offset, ins->dreg);
10999 /* Insert it after the instruction */
11004 /*
11005 * We can't assign ins->dreg to var->dreg here, since the
11006 * sregs could use it. So set a flag, and do it after
11007 * the sregs.
11008 */
11009 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)))
11011 }
11012 }
11013 }
11018 }
11019 }
11021 /************/
11022 /* SREGS */
11023 /************/
11034 guint32 load_opcode;
11038 //mono_inst_set_src_registers (ins, sregs);
11042 }
11053 /* The variable is already loaded to an lvreg */
11057 //mono_inst_set_src_registers (ins, sregs);
11059 }
11061 /* Try to fuse the load into the instruction */
11065 //mono_inst_set_src_registers (ins, sregs);
11070 //mono_inst_set_src_registers (ins, sregs);
11077 //printf ("%d ", srcindex); mono_print_ins (ins);
11081 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) {
11083 /*
11084 * sreg refers to the value loaded by the load
11085 * emitted below, but we need to use ins->dreg
11086 * since it refers to the store emitted earlier.
11087 */
11089 }
11094 }
11095 }
11098 //mono_inst_set_src_registers (ins, sregs);
11101 NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, sreg + 2, var->inst_basereg, var->inst_offset + MINI_MS_WORD_OFFSET);
11103 NEW_LOAD_MEMBASE (cfg, load_ins, OP_LOADI4_MEMBASE, sreg + 1, var->inst_basereg, var->inst_offset + MINI_LS_WORD_OFFSET);
11106 }
11108 #if SIZEOF_REGISTER == 4
11110 #endif
11114 }
11115 }
11120 }
11121 }
11122 }
11131 }
11137 }
11140 /* Clear vreg_to_lvreg array */
11147 }
11151 }
11153 /* Extend the live range based on the liveness info */
11159 /* The liveness info is incomplete */
11163 /* Live from at least the first ins of this bb */
11166 }
11169 /* Live at least until the last ins of this bb */
11172 }
11173 }
11174 }
11175 }
11177 #ifdef MONO_ARCH_HAVE_LIVERANGE_OPS
11178 /*
11179 * Emit LIVERANGE_START/LIVERANGE_END opcodes, the backend will implement them
11180 * by storing the current native offset into MonoMethodVar->live_range_start/end.
11181 */
11192 }
11199 else
11201 }
11202 }
11203 }
11204 #endif
11210 }
11212 /**
11213 * FIXME:
11214 * - use 'iadd' instead of 'int_add'
11215 * - handling ovf opcodes: decompose in method_to_ir.
11216 * - unify iregs/fregs
11217 * -> partly done, the missing parts are:
11218 * - a more complete unification would involve unifying the hregs as well, so
11219 * code wouldn't need if (fp) all over the place. but that would mean the hregs
11220 * would no longer map to the machine hregs, so the code generators would need to
11221 * be modified. Also, on ia64 for example, niregs + nfregs > 256 -> bitmasks
11222 * wouldn't work any more. Duplicating the code in mono_local_regalloc () into
11223 * fp/non-fp branches speeds it up by about 15%.
11224 * - use sext/zext opcodes instead of shifts
11225 * - add OP_ICALL
11226 * - get rid of TEMPLOADs if possible and use vregs instead
11227 * - clean up usage of OP_P/OP_ opcodes
11228 * - cleanup usage of DUMMY_USE
11229 * - cleanup the setting of ins->type for MonoInst's which are pushed on the
11230 * stack
11231 * - set the stack type and allocate a dreg in the EMIT_NEW macros
11232 * - get rid of all the <foo>2 stuff when the new JIT is ready.
11233 * - make sure handle_stack_args () is called before the branch is emitted
11234 * - when the new IR is done, get rid of all unused stuff
11235 * - COMPARE/BEQ as separate instructions or unify them ?
11236 * - keeping them separate allows specialized compare instructions like
11237 * compare_imm, compare_membase
11238 * - most back ends unify fp compare+branch, fp compare+ceq
11239 * - integrate mono_save_args into inline_method
11240 * - get rid of the empty bblocks created by MONO_EMIT_NEW_BRACH_BLOCK2
11241 * - handle long shift opts on 32 bit platforms somehow: they require
11242 * 3 sregs (2 for arg1 and 1 for arg2)
11243 * - make byref a 'normal' type.
11244 * - use vregs for bb->out_stacks if possible, handle_global_vreg will make them a
11245 * variable if needed.
11246 * - do not start a new IL level bblock when cfg->cbb is changed by a function call
11247 * like inline_method.
11248 * - remove inlining restrictions
11249 * - fix LNEG and enable cfold of INEG
11250 * - generalize x86 optimizations like ldelema as a peephole optimization
11251 * - add store_mem_imm for amd64
11252 * - optimize the loading of the interruption flag in the managed->native wrappers
11253 * - avoid special handling of OP_NOP in passes
11254 * - move code inserting instructions into one function/macro.
11255 * - try a coalescing phase after liveness analysis
11256 * - add float -> vreg conversion + local optimizations on !x86
11257 * - figure out how to handle decomposed branches during optimizations, ie.
11258 * compare+branch, op_jump_table+op_br etc.
11259 * - promote RuntimeXHandles to vregs
11260 * - vtype cleanups:
11261 * - add a NEW_VARLOADA_VREG macro
11262 * - the vtype optimizations are blocked by the LDADDR opcodes generated for
11263 * accessing vtype fields.
11264 * - get rid of I8CONST on 64 bit platforms
11265 * - dealing with the increase in code size due to branches created during opcode
11266 * decomposition:
11267 * - use extended basic blocks
11268 * - all parts of the JIT
11269 * - handle_global_vregs () && local regalloc
11270 * - avoid introducing global vregs during decomposition, like 'vtable' in isinst
11271 * - sources of increase in code size:
11272 * - vtypes
11273 * - long compares
11274 * - isinst and castclass
11275 * - lvregs not allocated to global registers even if used multiple times
11276 * - call cctors outside the JIT, to make -v output more readable and JIT timings more
11277 * meaningful.
11278 * - check for fp stack leakage in other opcodes too. (-> 'exceptions' optimization)
11279 * - add all micro optimizations from the old JIT
11280 * - put tree optimizations into the deadce pass
11281 * - decompose op_start_handler/op_endfilter/op_endfinally earlier using an arch
11282 * specific function.
11283 * - unify the float comparison opcodes with the other comparison opcodes, i.e.
11284 * fcompare + branchCC.
11285 * - create a helper function for allocating a stack slot, taking into account
11286 * MONO_CFG_HAS_SPILLUP.
11287 * - merge r68207.
11288 * - merge the ia64 switch changes.
11289 * - optimize mono_regstate2_alloc_int/float.
11290 * - fix the pessimistic handling of variables accessed in exception handler blocks.
11291 * - need to write a tree optimization pass, but the creation of trees is difficult, i.e.
11292 * parts of the tree could be separated by other instructions, killing the tree
11293 * arguments, or stores killing loads etc. Also, should we fold loads into other
11294 * instructions if the result of the load is used multiple times ?
11295 * - make the REM_IMM optimization in mini-x86.c arch-independent.
11296 * - LAST MERGE: 108395.
11297 * - when returning vtypes in registers, generate IR and append it to the end of the
11298 * last bb instead of doing it in the epilog.
11299 * - change the store opcodes so they use sreg1 instead of dreg to store the base register.
11300 */
11302 /*
11304 NOTES
11305 -----
11307 - When to decompose opcodes:
11308 - earlier: this makes some optimizations hard to implement, since the low level IR
11309 no longer contains the neccessary information. But it is easier to do.
11310 - later: harder to implement, enables more optimizations.
11311 - Branches inside bblocks:
11312 - created when decomposing complex opcodes.
11313 - branches to another bblock: harmless, but not tracked by the branch
11314 optimizations, so need to branch to a label at the start of the bblock.
11315 - branches to inside the same bblock: very problematic, trips up the local
11316 reg allocator. Can be fixed by spitting the current bblock, but that is a
11317 complex operation, since some local vregs can become global vregs etc.
11318 - Local/global vregs:
11319 - local vregs: temporary vregs used inside one bblock. Assigned to hregs by the
11320 local register allocator.
11321 - global vregs: used in more than one bblock. Have an associated MonoMethodVar
11322 structure, created by mono_create_var (). Assigned to hregs or the stack by
11323 the global register allocator.
11324 - When to do optimizations like alu->alu_imm:
11325 - earlier -> saves work later on since the IR will be smaller/simpler
11326 - later -> can work on more instructions
11327 - Handling of valuetypes:
11328 - When a vtype is pushed on the stack, a new temporary is created, an
11329 instruction computing its address (LDADDR) is emitted and pushed on
11330 the stack. Need to optimize cases when the vtype is used immediately as in
11331 argument passing, stloc etc.
11332 - Instead of the to_end stuff in the old JIT, simply call the function handling
11333 the values on the stack before emitting the last instruction of the bb.
11334 */