2 * aot-runtime.c: mono Ahead of Time compiler
5 * Dietmar Maurer (dietmar@ximian.com)
6 * Zoltan Varga (vargaz@gmail.com)
8 * (C) 2002 Ximian, Inc.
12 #include <sys/types.h>
18 #ifdef HAVE_SYS_MMAN_H
27 #ifdef HAVE_EXECINFO_H
34 #ifdef HAVE_SYS_WAIT_H
35 #include <sys/wait.h> /* for WIFEXITED, WEXITSTATUS */
38 #ifdef HAVE_DL_ITERATE_PHDR
42 #include <mono/metadata/tabledefs.h>
43 #include <mono/metadata/class.h>
44 #include <mono/metadata/object.h>
45 #include <mono/metadata/tokentype.h>
46 #include <mono/metadata/appdomain.h>
47 #include <mono/metadata/debug-helpers.h>
48 #include <mono/metadata/assembly.h>
49 #include <mono/metadata/metadata-internals.h>
50 #include <mono/metadata/marshal.h>
51 #include <mono/metadata/gc-internal.h>
52 #include <mono/metadata/monitor.h>
53 #include <mono/metadata/threads-types.h>
54 #include <mono/metadata/mono-endian.h>
55 #include <mono/utils/mono-logger-internal.h>
56 #include <mono/utils/mono-mmap.h>
57 #include "mono/utils/mono-compiler.h"
58 #include <mono/utils/mono-counters.h>
66 #define SHARED_EXT ".dll"
67 #elif ((defined(__ppc__) || defined(__powerpc__) || defined(__ppc64__)) || defined(__MACH__)) && !defined(__linux__)
68 #define SHARED_EXT ".dylib"
69 #elif defined(__APPLE__) && defined(TARGET_X86) && !defined(__native_client_codegen__)
70 #define SHARED_EXT ".dylib"
72 #define SHARED_EXT ".so"
75 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
76 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
78 typedef struct MonoAotModule
{
80 /* Pointer to the Global Offset Table */
82 GHashTable
*name_cache
;
83 GHashTable
*extra_methods
;
84 /* Maps methods to their code */
85 GHashTable
*method_to_code
;
86 /* Maps pointers into the method info to the methods themselves */
87 GHashTable
*method_ref_to_method
;
88 MonoAssemblyName
*image_names
;
90 MonoAssembly
*assembly
;
91 MonoImage
**image_table
;
92 guint32 image_table_len
;
102 gint32
*code_offsets
;
103 /* This contains <offset, index> pairs sorted by offset */
104 /* This is needed because LLVM emitted methods can be in any order */
105 gint32
*sorted_code_offsets
;
106 gint32 sorted_code_offsets_len
;
107 guint32
*method_info_offsets
;
108 guint32
*got_info_offsets
;
109 guint32
*ex_info_offsets
;
110 guint32
*class_info_offsets
;
111 guint32
*methods_loaded
;
112 guint16
*class_name_table
;
113 guint32
*extra_method_table
;
114 guint32
*extra_method_info_offsets
;
118 /* Points to the mono EH data created by LLVM */
119 guint8
*mono_eh_frame
;
121 /* Points to the trampolines */
122 guint8
*trampolines
[MONO_AOT_TRAMP_NUM
];
123 /* The first unused trampoline of each kind */
124 guint32 trampoline_index
[MONO_AOT_TRAMP_NUM
];
126 MonoAotFileInfo info
;
132 static GHashTable
*aot_modules
;
133 #define mono_aot_lock() EnterCriticalSection (&aot_mutex)
134 #define mono_aot_unlock() LeaveCriticalSection (&aot_mutex)
135 static CRITICAL_SECTION aot_mutex
;
138 * Maps assembly names to the mono_aot_module_<NAME>_info symbols in the
139 * AOT modules registered by mono_aot_register_module ().
141 static GHashTable
*static_aot_modules
;
144 * Maps MonoJitInfo* to the aot module they belong to, this can be different
145 * from ji->method->klass->image's aot module for generic instances.
147 static GHashTable
*ji_to_amodule
;
150 * Whenever to AOT compile loaded assemblies on demand and store them in
151 * a cache under $HOME/.mono/aot-cache.
153 static gboolean use_aot_cache
= FALSE
;
156 * Whenever to spawn a new process to AOT a file or do it in-process. Only relevant if
157 * use_aot_cache is TRUE.
159 static gboolean spawn_compiler
= TRUE
;
162 static gint32 mono_last_aot_method
= -1;
164 static gboolean make_unreadable
= FALSE
;
165 static guint32 name_table_accesses
= 0;
166 static guint32 n_pagefaults
= 0;
168 /* Used to speed-up find_aot_module () */
169 static gsize aot_code_low_addr
= (gssize
)-1;
170 static gsize aot_code_high_addr
= 0;
172 static GHashTable
*aot_jit_icall_hash
;
175 init_plt (MonoAotModule
*info
);
177 /*****************************************************/
179 /*****************************************************/
184 * Load one of the images referenced by AMODULE. Returns NULL if the image is not
185 * found, and sets the loader error if SET_ERROR is TRUE.
188 load_image (MonoAotModule
*amodule
, int index
, gboolean set_error
)
190 MonoAssembly
*assembly
;
191 MonoImageOpenStatus status
;
193 g_assert (index
< amodule
->image_table_len
);
195 if (amodule
->image_table
[index
])
196 return amodule
->image_table
[index
];
197 if (amodule
->out_of_date
)
200 assembly
= mono_assembly_load (&amodule
->image_names
[index
], amodule
->assembly
->basedir
, &status
);
202 mono_trace (G_LOG_LEVEL_INFO
, MONO_TRACE_AOT
, "AOT module %s is unusable because dependency %s is not found.\n", amodule
->aot_name
, amodule
->image_names
[index
].name
);
203 amodule
->out_of_date
= TRUE
;
206 char *full_name
= mono_stringify_assembly_name (&amodule
->image_names
[index
]);
207 mono_loader_set_error_assembly_load (full_name
, FALSE
);
213 if (strcmp (assembly
->image
->guid
, amodule
->image_guids
[index
])) {
214 mono_trace (G_LOG_LEVEL_INFO
, MONO_TRACE_AOT
, "AOT module %s is unusable (GUID of dependent assembly %s doesn't match (expected '%s', got '%s').\n", amodule
->aot_name
, amodule
->image_names
[index
].name
, amodule
->image_guids
[index
], assembly
->image
->guid
);
215 amodule
->out_of_date
= TRUE
;
219 amodule
->image_table
[index
] = assembly
->image
;
220 return assembly
->image
;
224 decode_value (guint8
*ptr
, guint8
**rptr
)
229 if ((b
& 0x80) == 0){
232 } else if ((b
& 0x40) == 0){
233 len
= ((b
& 0x3f) << 8 | ptr
[1]);
235 } else if (b
!= 0xff) {
236 len
= ((b
& 0x1f) << 24) |
243 len
= (ptr
[1] << 24) | (ptr
[2] << 16) | (ptr
[3] << 8) | ptr
[4];
249 //printf ("DECODE: %d.\n", len);
254 * mono_aot_get_method:
256 * Decode an offset table emitted by emit_offset_table (), returning the INDEXth
260 mono_aot_get_offset (guint32
*table
, int index
)
262 int i
, group
, ngroups
, index_entry_size
;
263 int start_offset
, offset
, noffsets
, group_size
;
264 guint8
*data_start
, *p
;
265 guint32
*index32
= NULL
;
266 guint16
*index16
= NULL
;
268 noffsets
= table
[0];
269 group_size
= table
[1];
271 index_entry_size
= table
[3];
272 group
= index
/ group_size
;
274 if (index_entry_size
== 2) {
275 index16
= (guint16
*)&table
[4];
276 data_start
= (guint8
*)&index16
[ngroups
];
277 p
= data_start
+ index16
[group
];
279 index32
= (guint32
*)&table
[4];
280 data_start
= (guint8
*)&index32
[ngroups
];
281 p
= data_start
+ index32
[group
];
284 /* offset will contain the value of offsets [group * group_size] */
285 offset
= start_offset
= decode_value (p
, &p
);
286 for (i
= group
* group_size
+ 1; i
<= index
; ++i
) {
287 offset
+= decode_value (p
, &p
);
290 //printf ("Offset lookup: %d -> %d, start=%d, p=%d\n", index, offset, start_offset, table [3 + group]);
296 decode_resolve_method_ref (MonoAotModule
*module
, guint8
*buf
, guint8
**endbuf
);
299 decode_klass_ref (MonoAotModule
*module
, guint8
*buf
, guint8
**endbuf
);
301 static MonoGenericInst
*
302 decode_generic_inst (MonoAotModule
*module
, guint8
*buf
, guint8
**endbuf
)
305 MonoType
**type_argv
;
306 MonoGenericInst
*inst
;
309 type_argc
= decode_value (p
, &p
);
310 type_argv
= g_new0 (MonoType
*, type_argc
);
312 for (i
= 0; i
< type_argc
; ++i
) {
313 MonoClass
*pclass
= decode_klass_ref (module
, p
, &p
);
318 type_argv
[i
] = &pclass
->byval_arg
;
321 inst
= mono_metadata_get_generic_inst (type_argc
, type_argv
);
330 decode_generic_context (MonoAotModule
*module
, MonoGenericContext
*ctx
, guint8
*buf
, guint8
**endbuf
)
332 gboolean has_class_inst
, has_method_inst
;
335 has_class_inst
= decode_value (p
, &p
);
336 if (has_class_inst
) {
337 ctx
->class_inst
= decode_generic_inst (module
, p
, &p
);
338 if (!ctx
->class_inst
)
341 has_method_inst
= decode_value (p
, &p
);
342 if (has_method_inst
) {
343 ctx
->method_inst
= decode_generic_inst (module
, p
, &p
);
344 if (!ctx
->method_inst
)
353 decode_klass_ref (MonoAotModule
*module
, guint8
*buf
, guint8
**endbuf
)
356 MonoClass
*klass
, *eklass
;
360 token
= decode_value (p
, &p
);
365 if (mono_metadata_token_table (token
) == 0) {
366 image
= load_image (module
, decode_value (p
, &p
), TRUE
);
369 klass
= mono_class_get (image
, MONO_TOKEN_TYPE_DEF
+ token
);
370 } else if (mono_metadata_token_table (token
) == MONO_TABLE_TYPESPEC
) {
371 if (token
== MONO_TOKEN_TYPE_SPEC
) {
372 MonoTypeEnum type
= decode_value (p
, &p
);
374 if (type
== MONO_TYPE_GENERICINST
) {
376 MonoGenericContext ctx
;
379 gclass
= decode_klass_ref (module
, p
, &p
);
382 g_assert (gclass
->generic_container
);
384 memset (&ctx
, 0, sizeof (ctx
));
385 ctx
.class_inst
= decode_generic_inst (module
, p
, &p
);
388 type
= mono_class_inflate_generic_type (&gclass
->byval_arg
, &ctx
);
389 klass
= mono_class_from_mono_type (type
);
390 mono_metadata_free_type (type
);
391 } else if ((type
== MONO_TYPE_VAR
) || (type
== MONO_TYPE_MVAR
)) {
393 MonoGenericContainer
*container
;
395 int num
= decode_value (p
, &p
);
396 gboolean is_method
= decode_value (p
, &p
);
399 MonoMethod
*method_def
;
400 g_assert (type
== MONO_TYPE_MVAR
);
401 method_def
= decode_resolve_method_ref (module
, p
, &p
);
405 container
= mono_method_get_generic_container (method_def
);
407 MonoClass
*class_def
;
408 g_assert (type
== MONO_TYPE_VAR
);
409 class_def
= decode_klass_ref (module
, p
, &p
);
413 container
= class_def
->generic_container
;
416 g_assert (container
);
418 // FIXME: Memory management
419 t
= g_new0 (MonoType
, 1);
421 t
->data
.generic_param
= mono_generic_container_get_param (container
, num
);
423 // FIXME: Maybe use types directly to avoid
424 // the overhead of creating MonoClass-es
425 klass
= mono_class_from_mono_type (t
);
429 g_assert_not_reached ();
432 image
= load_image (module
, decode_value (p
, &p
), TRUE
);
435 klass
= mono_class_get (image
, token
);
437 } else if (token
== MONO_TOKEN_TYPE_DEF
) {
439 image
= load_image (module
, decode_value (p
, &p
), TRUE
);
442 rank
= decode_value (p
, &p
);
443 eklass
= decode_klass_ref (module
, p
, &p
);
444 klass
= mono_array_class_get (eklass
, rank
);
446 g_assert_not_reached ();
454 static MonoClassField
*
455 decode_field_info (MonoAotModule
*module
, guint8
*buf
, guint8
**endbuf
)
457 MonoClass
*klass
= decode_klass_ref (module
, buf
, &buf
);
464 token
= MONO_TOKEN_FIELD_DEF
+ decode_value (p
, &p
);
468 return mono_class_get_field (klass
, token
);
471 /* Stores information returned by decode_method_ref () */
476 gboolean no_aot_trampoline
;
480 * decode_method_ref_with_target:
482 * Decode a method reference, storing the image/token into a MethodRef structure.
483 * This avoids loading metadata for the method if the caller does not need it. If the method has
484 * no token, then it is loaded from metadata and ref->method is set to the method instance.
485 * If TARGET is non-NULL, abort decoding if it can be determined that the decoded method couldn't resolve to TARGET, and return FALSE.
488 decode_method_ref_with_target (MonoAotModule
*module
, MethodRef
*ref
, MonoMethod
*target
, guint8
*buf
, guint8
**endbuf
)
490 guint32 image_index
, value
;
491 MonoImage
*image
= NULL
;
494 memset (ref
, 0, sizeof (MethodRef
));
496 value
= decode_value (p
, &p
);
497 image_index
= value
>> 24;
499 if (image_index
== MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE
) {
500 ref
->no_aot_trampoline
= TRUE
;
501 value
= decode_value (p
, &p
);
502 image_index
= value
>> 24;
505 if (image_index
< MONO_AOT_METHODREF_MIN
|| image_index
== MONO_AOT_METHODREF_METHODSPEC
|| image_index
== MONO_AOT_METHODREF_GINST
) {
506 if (target
&& target
->wrapper_type
)
510 if (image_index
== MONO_AOT_METHODREF_WRAPPER
) {
511 guint32 wrapper_type
;
513 wrapper_type
= decode_value (p
, &p
);
515 if (target
&& target
->wrapper_type
!= wrapper_type
)
519 image
= mono_defaults
.corlib
;
521 switch (wrapper_type
) {
522 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK
: {
523 MonoMethod
*m
= decode_resolve_method_ref (module
, p
, &p
);
527 mono_class_init (m
->klass
);
528 ref
->method
= mono_marshal_get_remoting_invoke_with_check (m
);
531 case MONO_WRAPPER_PROXY_ISINST
: {
532 MonoClass
*klass
= decode_klass_ref (module
, p
, &p
);
535 ref
->method
= mono_marshal_get_proxy_cancast (klass
);
538 case MONO_WRAPPER_LDFLD
:
539 case MONO_WRAPPER_LDFLDA
:
540 case MONO_WRAPPER_STFLD
:
541 case MONO_WRAPPER_ISINST
: {
542 MonoClass
*klass
= decode_klass_ref (module
, p
, &p
);
545 if (wrapper_type
== MONO_WRAPPER_LDFLD
)
546 ref
->method
= mono_marshal_get_ldfld_wrapper (&klass
->byval_arg
);
547 else if (wrapper_type
== MONO_WRAPPER_LDFLDA
)
548 ref
->method
= mono_marshal_get_ldflda_wrapper (&klass
->byval_arg
);
549 else if (wrapper_type
== MONO_WRAPPER_STFLD
)
550 ref
->method
= mono_marshal_get_stfld_wrapper (&klass
->byval_arg
);
551 else if (wrapper_type
== MONO_WRAPPER_ISINST
)
552 ref
->method
= mono_marshal_get_isinst (klass
);
554 g_assert_not_reached ();
557 case MONO_WRAPPER_LDFLD_REMOTE
:
558 ref
->method
= mono_marshal_get_ldfld_remote_wrapper (NULL
);
560 case MONO_WRAPPER_STFLD_REMOTE
:
561 ref
->method
= mono_marshal_get_stfld_remote_wrapper (NULL
);
563 case MONO_WRAPPER_ALLOC
: {
564 int atype
= decode_value (p
, &p
);
566 ref
->method
= mono_gc_get_managed_allocator_by_type (atype
);
569 case MONO_WRAPPER_WRITE_BARRIER
:
570 ref
->method
= mono_gc_get_write_barrier ();
572 case MONO_WRAPPER_STELEMREF
:
573 ref
->method
= mono_marshal_get_stelemref ();
575 case MONO_WRAPPER_SYNCHRONIZED
: {
576 MonoMethod
*m
= decode_resolve_method_ref (module
, p
, &p
);
580 ref
->method
= mono_marshal_get_synchronized_wrapper (m
);
583 case MONO_WRAPPER_UNKNOWN
: {
584 MonoMethodDesc
*desc
;
585 MonoMethod
*orig_method
;
586 int subtype
= decode_value (p
, &p
);
588 if (subtype
== MONO_AOT_WRAPPER_PTR_TO_STRUCTURE
|| subtype
== MONO_AOT_WRAPPER_STRUCTURE_TO_PTR
) {
589 MonoClass
*klass
= decode_klass_ref (module
, p
, &p
);
595 if (klass
!= target
->klass
)
598 if (subtype
== MONO_AOT_WRAPPER_PTR_TO_STRUCTURE
) {
599 if (strcmp (target
->name
, "PtrToStructure"))
601 ref
->method
= mono_marshal_get_ptr_to_struct (klass
);
603 if (strcmp (target
->name
, "StructureToPtr"))
605 ref
->method
= mono_marshal_get_struct_to_ptr (klass
);
608 if (subtype
== MONO_AOT_WRAPPER_MONITOR_ENTER
)
609 desc
= mono_method_desc_new ("Monitor:Enter", FALSE
);
610 else if (subtype
== MONO_AOT_WRAPPER_MONITOR_EXIT
)
611 desc
= mono_method_desc_new ("Monitor:Exit", FALSE
);
612 else if (subtype
== MONO_AOT_WRAPPER_MONITOR_ENTER_V4
)
613 desc
= mono_method_desc_new ("Monitor:Enter(object,bool&)", FALSE
);
615 g_assert_not_reached ();
616 orig_method
= mono_method_desc_search_in_class (desc
, mono_defaults
.monitor_class
);
617 g_assert (orig_method
);
618 mono_method_desc_free (desc
);
619 ref
->method
= mono_monitor_get_fast_path (orig_method
);
623 case MONO_WRAPPER_RUNTIME_INVOKE
: {
625 MonoMethod
*m
= decode_resolve_method_ref (module
, p
, &p
);
629 ref
->method
= mono_marshal_get_runtime_invoke (m
, FALSE
);
632 case MONO_WRAPPER_MANAGED_TO_MANAGED
: {
633 int subtype
= decode_value (p
, &p
);
635 if (subtype
== MONO_AOT_WRAPPER_ELEMENT_ADDR
) {
636 int rank
= decode_value (p
, &p
);
637 int elem_size
= decode_value (p
, &p
);
639 ref
->method
= mono_marshal_get_array_address (rank
, elem_size
);
641 g_assert_not_reached ();
645 case MONO_WRAPPER_MANAGED_TO_NATIVE
: {
646 MonoMethod
*m
= decode_resolve_method_ref (module
, p
, &p
);
651 /* This should only happen when looking for an extra method */
653 if (mono_marshal_method_from_wrapper (target
) == m
)
654 ref
->method
= target
;
659 case MONO_WRAPPER_CASTCLASS
: {
660 int subtype
= decode_value (p
, &p
);
662 if (subtype
== MONO_AOT_WRAPPER_CASTCLASS_WITH_CACHE
)
663 ref
->method
= mono_marshal_get_castclass_with_cache ();
664 else if (subtype
== MONO_AOT_WRAPPER_ISINST_WITH_CACHE
)
665 ref
->method
= mono_marshal_get_isinst_with_cache ();
667 g_assert_not_reached ();
671 g_assert_not_reached ();
673 } else if (image_index
== MONO_AOT_METHODREF_WRAPPER_NAME
) {
676 /* Can't decode these */
677 g_assert_not_reached ();
678 } else if (image_index
== MONO_AOT_METHODREF_METHODSPEC
) {
679 image_index
= decode_value (p
, &p
);
680 ref
->token
= decode_value (p
, &p
);
682 image
= load_image (module
, image_index
, TRUE
);
685 } else if (image_index
== MONO_AOT_METHODREF_GINST
) {
687 MonoGenericContext ctx
;
690 * These methods do not have a token which resolves them, so we
691 * resolve them immediately.
693 klass
= decode_klass_ref (module
, p
, &p
);
697 if (target
&& target
->klass
!= klass
)
700 image_index
= decode_value (p
, &p
);
701 ref
->token
= decode_value (p
, &p
);
703 image
= load_image (module
, image_index
, TRUE
);
707 ref
->method
= mono_get_method_full (image
, ref
->token
, NULL
, NULL
);
711 memset (&ctx
, 0, sizeof (ctx
));
713 if (FALSE
&& klass
->generic_class
) {
714 ctx
.class_inst
= klass
->generic_class
->context
.class_inst
;
715 ctx
.method_inst
= NULL
;
717 ref
->method
= mono_class_inflate_generic_method_full (ref
->method
, klass
, &ctx
);
720 memset (&ctx
, 0, sizeof (ctx
));
722 if (!decode_generic_context (module
, &ctx
, p
, &p
))
725 ref
->method
= mono_class_inflate_generic_method_full (ref
->method
, klass
, &ctx
);
726 } else if (image_index
== MONO_AOT_METHODREF_ARRAY
) {
730 klass
= decode_klass_ref (module
, p
, &p
);
733 method_type
= decode_value (p
, &p
);
734 switch (method_type
) {
736 ref
->method
= mono_class_get_method_from_name (klass
, ".ctor", klass
->rank
);
739 ref
->method
= mono_class_get_method_from_name (klass
, ".ctor", klass
->rank
* 2);
742 ref
->method
= mono_class_get_method_from_name (klass
, "Get", -1);
745 ref
->method
= mono_class_get_method_from_name (klass
, "Address", -1);
748 ref
->method
= mono_class_get_method_from_name (klass
, "Set", -1);
751 g_assert_not_reached ();
754 g_assert (image_index
< MONO_AOT_METHODREF_MIN
);
755 ref
->token
= MONO_TOKEN_METHOD_DEF
| (value
& 0xffffff);
757 image
= load_image (module
, image_index
, TRUE
);
770 decode_method_ref (MonoAotModule
*module
, MethodRef
*ref
, guint8
*buf
, guint8
**endbuf
)
772 return decode_method_ref_with_target (module
, ref
, NULL
, buf
, endbuf
);
776 * decode_resolve_method_ref_with_target:
778 * Similar to decode_method_ref, but resolve and return the method itself.
781 decode_resolve_method_ref_with_target (MonoAotModule
*module
, MonoMethod
*target
, guint8
*buf
, guint8
**endbuf
)
786 res
= decode_method_ref_with_target (module
, &ref
, target
, buf
, endbuf
);
793 return mono_get_method (ref
.image
, ref
.token
, NULL
);
797 decode_resolve_method_ref (MonoAotModule
*module
, guint8
*buf
, guint8
**endbuf
)
799 return decode_resolve_method_ref_with_target (module
, NULL
, buf
, endbuf
);
803 create_cache_structure (void)
809 home
= g_get_home_dir ();
813 tmp
= g_build_filename (home
, ".mono", NULL
);
814 if (!g_file_test (tmp
, G_FILE_TEST_IS_DIR
)) {
815 mono_trace (G_LOG_LEVEL_INFO
, MONO_TRACE_AOT
, "AOT creating directory %s", tmp
);
819 err
= mkdir (tmp
, 0777);
822 mono_trace (G_LOG_LEVEL_INFO
, MONO_TRACE_AOT
, "AOT failed: %s", g_strerror (errno
));
828 tmp
= g_build_filename (home
, ".mono", "aot-cache", NULL
);
829 if (!g_file_test (tmp
, G_FILE_TEST_IS_DIR
)) {
830 mono_trace (G_LOG_LEVEL_INFO
, MONO_TRACE_AOT
, "AOT creating directory %s", tmp
);
834 err
= mkdir (tmp
, 0777);
837 mono_trace (G_LOG_LEVEL_INFO
, MONO_TRACE_AOT
, "AOT failed: %s", g_strerror (errno
));
846 * load_aot_module_from_cache:
848 * Experimental code to AOT compile loaded assemblies on demand.
851 * - Add environment variable MONO_AOT_CACHE_OPTIONS
852 * - Add options for controlling the cache size
853 * - Handle full cache by deleting old assemblies lru style
854 * - Add options for excluding assemblies during development
855 * - Maybe add a threshold after an assembly is AOT compiled
856 * - invoking a new mono process is a security risk
857 * - recompile the AOT module if one of its dependencies changes
860 load_aot_module_from_cache (MonoAssembly
*assembly
, char **aot_name
)
862 char *fname
, *cmd
, *tmp2
, *aot_options
;
871 if (assembly
->image
->dynamic
)
874 create_cache_structure ();
876 home
= g_get_home_dir ();
878 tmp2
= g_strdup_printf ("%s-%s%s", assembly
->image
->assembly_name
, assembly
->image
->guid
, SHARED_EXT
);
879 fname
= g_build_filename (home
, ".mono", "aot-cache", tmp2
, NULL
);
883 mono_trace (G_LOG_LEVEL_INFO
, MONO_TRACE_AOT
, "AOT trying to load from cache: '%s'.", fname
);
884 module
= mono_dl_open (fname
, MONO_DL_LAZY
, NULL
);
887 mono_trace (G_LOG_LEVEL_INFO
, MONO_TRACE_AOT
, "AOT not found.");
889 mono_trace (G_LOG_LEVEL_MESSAGE
, MONO_TRACE_AOT
, "AOT precompiling assembly '%s'... ", assembly
->image
->name
);
891 aot_options
= g_strdup_printf ("outfile=%s", fname
);
893 if (spawn_compiler
) {
894 /* FIXME: security */
895 /* FIXME: Has to pass the assembly loading path to the child process */
896 cmd
= g_strdup_printf ("mono -O=all --aot=%s %s", aot_options
, assembly
->image
->name
);
898 res
= g_spawn_command_line_sync (cmd
, &out
, &err
, &exit_status
, NULL
);
900 #if !defined(HOST_WIN32) && !defined(__ppc__) && !defined(__ppc64__) && !defined(__powerpc__)
902 if (!WIFEXITED (exit_status
) && (WEXITSTATUS (exit_status
) == 0))
903 mono_trace (G_LOG_LEVEL_MESSAGE
, MONO_TRACE_AOT
, "AOT failed: %s.", err
);
905 mono_trace (G_LOG_LEVEL_MESSAGE
, MONO_TRACE_AOT
, "AOT succeeded.");
912 res
= mono_compile_assembly (assembly
, mono_parse_default_optimizations (NULL
), aot_options
);
914 mono_trace (G_LOG_LEVEL_MESSAGE
, MONO_TRACE_AOT
, "AOT failed.");
916 mono_trace (G_LOG_LEVEL_MESSAGE
, MONO_TRACE_AOT
, "AOT succeeded.");
920 module
= mono_dl_open (fname
, MONO_DL_LAZY
, NULL
);
922 g_free (aot_options
);
929 find_symbol (MonoDl
*module
, gpointer
*globals
, const char *name
, gpointer
*value
)
933 guint16
*table
, *entry
;
937 /* The first entry points to the hash */
941 table_size
= table
[0];
944 hash
= mono_metadata_str_hash (name
) % table_size
;
946 entry
= &table
[hash
* 2];
948 /* Search the hash for the index into the globals table */
950 while (entry
[0] != 0) {
951 guint32 index
= entry
[0] - 1;
952 guint32 next
= entry
[1];
954 //printf ("X: %s %s\n", (char*)globals [index * 2], name);
956 if (!strcmp (globals
[index
* 2], name
)) {
957 global_index
= index
;
962 entry
= &table
[next
* 2];
968 if (global_index
!= -1)
969 *value
= globals
[global_index
* 2 + 1];
973 char *err
= mono_dl_symbol (module
, name
, value
);
981 check_usable (MonoAssembly
*assembly
, MonoAotFileInfo
*info
, char **out_msg
)
985 gboolean usable
= TRUE
;
989 if (strcmp (assembly
->image
->guid
, info
->assembly_guid
)) {
990 msg
= g_strdup_printf ("doesn't match assembly");
994 build_info
= mono_get_runtime_build_info ();
995 if (strlen (info
->runtime_version
) > 0 && strcmp (info
->runtime_version
, build_info
)) {
996 msg
= g_strdup_printf ("compiled against runtime version '%s' while this runtime has version '%s'", info
->runtime_version
, build_info
);
1001 full_aot
= info
->flags
& MONO_AOT_FILE_FLAG_FULL_AOT
;
1003 if (mono_aot_only
&& !full_aot
) {
1004 msg
= g_strdup_printf ("not compiled with --aot=full");
1007 if (!mono_aot_only
&& full_aot
) {
1008 msg
= g_strdup_printf ("compiled with --aot=full");
1012 /* mono_arch_find_imt_method () requires this */
1013 if ((info
->flags
& MONO_AOT_FILE_FLAG_WITH_LLVM
) && !mono_use_llvm
) {
1014 msg
= g_strdup_printf ("compiled against LLVM");
1017 if (!(info
->flags
& MONO_AOT_FILE_FLAG_WITH_LLVM
) && mono_use_llvm
) {
1018 msg
= g_strdup_printf ("not compiled against LLVM");
1022 if (mini_get_debug_options ()->mdb_optimizations
&& !(info
->flags
& MONO_AOT_FILE_FLAG_DEBUG
) && !full_aot
) {
1023 msg
= g_strdup_printf ("not compiled for debugging");
1029 if (info
->gc_name_index
!= -1) {
1030 char *gc_name
= (char*)&blob
[info
->gc_name_index
];
1031 const char *current_gc_name
= mono_gc_get_gc_name ();
1033 if (strcmp (current_gc_name
, gc_name
) != 0) {
1034 msg
= g_strdup_printf ("compiled against GC %s, while the current runtime uses GC %s.\n", gc_name
, current_gc_name
);
1044 load_aot_module (MonoAssembly
*assembly
, gpointer user_data
)
1047 MonoAotModule
*amodule
;
1049 gboolean usable
= TRUE
;
1050 char *version_symbol
= NULL
;
1052 gpointer
*globals
= NULL
;
1053 MonoAotFileInfo
*info
= NULL
;
1056 gboolean do_load_image
= TRUE
;
1058 if (mono_compile_aot
)
1061 if (assembly
->image
->aot_module
)
1063 * Already loaded. This can happen because the assembly loading code might invoke
1064 * the assembly load hooks multiple times for the same assembly.
1068 if (assembly
->image
->dynamic
)
1071 if (mono_security_get_mode () == MONO_SECURITY_MODE_CAS
)
1075 if (static_aot_modules
)
1076 info
= g_hash_table_lookup (static_aot_modules
, assembly
->aname
.name
);
1082 /* Statically linked AOT module */
1084 aot_name
= g_strdup_printf ("%s", assembly
->aname
.name
);
1085 mono_trace (G_LOG_LEVEL_INFO
, MONO_TRACE_AOT
, "Found statically linked AOT module '%s'.\n", aot_name
);
1086 globals
= info
->globals
;
1089 sofile
= load_aot_module_from_cache (assembly
, &aot_name
);
1092 aot_name
= g_strdup_printf ("%s%s", assembly
->image
->name
, SHARED_EXT
);
1094 sofile
= mono_dl_open (aot_name
, MONO_DL_LAZY
, &err
);
1097 mono_trace (G_LOG_LEVEL_INFO
, MONO_TRACE_AOT
, "AOT failed to load AOT module %s: %s\n", aot_name
, err
);
1103 if (!sofile
&& !globals
) {
1104 if (mono_aot_only
) {
1105 fprintf (stderr
, "Failed to load AOT module '%s' in aot-only mode.\n", aot_name
);
1113 find_symbol (sofile
, globals
, "mono_aot_version", (gpointer
*) &version_symbol
);
1114 find_symbol (sofile
, globals
, "mono_aot_file_info", (gpointer
*)&info
);
1117 if (version_symbol
) {
1118 /* Old file format */
1119 version
= atoi (version_symbol
);
1122 version
= info
->version
;
1125 if (version
!= MONO_AOT_FILE_VERSION
) {
1126 msg
= g_strdup_printf ("wrong file format version (expected %d got %d)", MONO_AOT_FILE_VERSION
, version
);
1129 usable
= check_usable (assembly
, info
, &msg
);
1133 if (mono_aot_only
) {
1134 fprintf (stderr
, "Failed to load AOT module '%s' while running in aot-only mode: %s.\n", aot_name
, msg
);
1137 mono_trace (G_LOG_LEVEL_INFO
, MONO_TRACE_AOT
, "AOT module %s is unusable: %s.\n", aot_name
, msg
);
1142 mono_dl_close (sofile
);
1143 assembly
->image
->aot_module
= NULL
;
1148 g_assert (info
->double_align
== __alignof__ (double));
1149 g_assert (info
->long_align
== __alignof__ (gint64
));
1153 amodule
= g_new0 (MonoAotModule
, 1);
1154 amodule
->aot_name
= aot_name
;
1155 amodule
->assembly
= assembly
;
1157 memcpy (&amodule
->info
, info
, sizeof (*info
));
1159 amodule
->got
= amodule
->info
.got
;
1160 amodule
->got
[0] = assembly
->image
;
1161 amodule
->globals
= globals
;
1162 amodule
->sofile
= sofile
;
1163 amodule
->method_to_code
= g_hash_table_new (mono_aligned_addr_hash
, NULL
);
1164 amodule
->blob
= blob
;
1166 /* Read image table */
1168 guint32 table_len
, i
;
1171 table
= info
->image_table
;
1174 table_len
= *(guint32
*)table
;
1175 table
+= sizeof (guint32
);
1176 amodule
->image_table
= g_new0 (MonoImage
*, table_len
);
1177 amodule
->image_names
= g_new0 (MonoAssemblyName
, table_len
);
1178 amodule
->image_guids
= g_new0 (char*, table_len
);
1179 amodule
->image_table_len
= table_len
;
1180 for (i
= 0; i
< table_len
; ++i
) {
1181 MonoAssemblyName
*aname
= &(amodule
->image_names
[i
]);
1183 aname
->name
= g_strdup (table
);
1184 table
+= strlen (table
) + 1;
1185 amodule
->image_guids
[i
] = g_strdup (table
);
1186 table
+= strlen (table
) + 1;
1188 aname
->culture
= g_strdup (table
);
1189 table
+= strlen (table
) + 1;
1190 memcpy (aname
->public_key_token
, table
, strlen (table
) + 1);
1191 table
+= strlen (table
) + 1;
1193 table
= ALIGN_PTR_TO (table
, 8);
1194 aname
->flags
= *(guint32
*)table
;
1196 aname
->major
= *(guint32
*)table
;
1198 aname
->minor
= *(guint32
*)table
;
1200 aname
->build
= *(guint32
*)table
;
1202 aname
->revision
= *(guint32
*)table
;
1207 amodule
->code_offsets
= info
->code_offsets
;
1208 amodule
->code
= info
->methods
;
1210 /* Mask out thumb interop bit */
1211 amodule
->code
= (void*)((mgreg_t
)amodule
->code
& ~1);
1213 amodule
->code_end
= info
->methods_end
;
1214 amodule
->method_info_offsets
= info
->method_info_offsets
;
1215 amodule
->ex_info_offsets
= info
->ex_info_offsets
;
1216 amodule
->class_info_offsets
= info
->class_info_offsets
;
1217 amodule
->class_name_table
= info
->class_name_table
;
1218 amodule
->extra_method_table
= info
->extra_method_table
;
1219 amodule
->extra_method_info_offsets
= info
->extra_method_info_offsets
;
1220 amodule
->got_info_offsets
= info
->got_info_offsets
;
1221 amodule
->unwind_info
= info
->unwind_info
;
1222 amodule
->mem_end
= info
->mem_end
;
1223 amodule
->mem_begin
= amodule
->code
;
1224 amodule
->plt
= info
->plt
;
1225 amodule
->plt_end
= info
->plt_end
;
1226 amodule
->mono_eh_frame
= info
->mono_eh_frame
;
1227 amodule
->trampolines
[MONO_AOT_TRAMP_SPECIFIC
] = info
->specific_trampolines
;
1228 amodule
->trampolines
[MONO_AOT_TRAMP_STATIC_RGCTX
] = info
->static_rgctx_trampolines
;
1229 amodule
->trampolines
[MONO_AOT_TRAMP_IMT_THUNK
] = info
->imt_thunks
;
1230 amodule
->thumb_end
= info
->thumb_end
;
1232 if (make_unreadable
) {
1233 #ifndef TARGET_WIN32
1235 guint8
*page_start
, *page_end
;
1238 addr
= amodule
->mem_begin
;
1239 len
= amodule
->mem_end
- amodule
->mem_begin
;
1241 /* Round down in both directions to avoid modifying data which is not ours */
1242 page_start
= (guint8
*) (((gssize
) (addr
)) & ~ (mono_pagesize () - 1)) + mono_pagesize ();
1243 page_end
= (guint8
*) (((gssize
) (addr
+ len
)) & ~ (mono_pagesize () - 1));
1244 if (page_end
> page_start
) {
1245 err
= mono_mprotect (page_start
, (page_end
- page_start
), MONO_MMAP_NONE
);
1246 g_assert (err
== 0);
1253 aot_code_low_addr
= MIN (aot_code_low_addr
, (gsize
)amodule
->code
);
1254 aot_code_high_addr
= MAX (aot_code_high_addr
, (gsize
)amodule
->code_end
);
1256 g_hash_table_insert (aot_modules
, assembly
, amodule
);
1259 mono_jit_info_add_aot_module (assembly
->image
, amodule
->code
, amodule
->code_end
);
1261 assembly
->image
->aot_module
= amodule
;
1263 if (mono_aot_only
) {
1264 if (mono_defaults
.corlib
) {
1265 /* The second got slot contains the mscorlib got addr */
1266 MonoAotModule
*mscorlib_amodule
= mono_defaults
.corlib
->aot_module
;
1268 amodule
->got
[1] = mscorlib_amodule
->got
;
1270 amodule
->got
[1] = amodule
->got
;
1274 if (mono_gc_is_moving ()) {
1277 memset (&ji
, 0, sizeof (ji
));
1278 ji
.type
= MONO_PATCH_INFO_GC_CARD_TABLE_ADDR
;
1280 amodule
->got
[2] = mono_resolve_patch_target (NULL
, mono_get_root_domain (), NULL
, &ji
, FALSE
);
1284 * Since we store methoddef and classdef tokens when referring to methods/classes in
1285 * referenced assemblies, we depend on the exact versions of the referenced assemblies.
1286 * MS calls this 'hard binding'. This means we have to load all referenced assemblies
1287 * non-lazily, since we can't handle out-of-date errors later.
1288 * The cached class info also depends on the exact assemblies.
1290 #if defined(__native_client__)
1291 /* TODO: Don't 'load_image' on mscorlib due to a */
1292 /* recursive loading problem. This should be */
1293 /* removed if mscorlib is loaded from disk. */
1294 if (strncmp(assembly
->aname
.name
, "mscorlib", 8)) {
1295 do_load_image
= TRUE
;
1297 do_load_image
= FALSE
;
1300 if (do_load_image
) {
1301 for (i
= 0; i
< amodule
->image_table_len
; ++i
)
1302 load_image (amodule
, i
, FALSE
);
1305 if (amodule
->out_of_date
) {
1306 mono_trace (G_LOG_LEVEL_INFO
, MONO_TRACE_AOT
, "AOT Module %s is unusable because a dependency is out-of-date.\n", assembly
->image
->name
);
1307 if (mono_aot_only
) {
1308 fprintf (stderr
, "Failed to load AOT module '%s' while running in aot-only mode because a dependency cannot be found or it is out of date.\n", aot_name
);
1313 mono_trace (G_LOG_LEVEL_INFO
, MONO_TRACE_AOT
, "AOT loaded AOT Module for %s.\n", assembly
->image
->name
);
1317 * mono_aot_register_globals:
1319 * This is called by the ctor function in AOT images compiled with the
1320 * 'no-dlsym' option.
1323 mono_aot_register_globals (gpointer
*globals
)
1325 g_assert_not_reached ();
1329 * mono_aot_register_module:
1331 * This should be called by embedding code to register AOT modules statically linked
1332 * into the executable. AOT_INFO should be the value of the
1333 * 'mono_aot_module_<ASSEMBLY_NAME>_info' global symbol from the AOT module.
1336 mono_aot_register_module (gpointer
*aot_info
)
1340 MonoAotFileInfo
*info
= (gpointer
)aot_info
;
1342 g_assert (info
->version
== MONO_AOT_FILE_VERSION
);
1344 globals
= info
->globals
;
1347 aname
= info
->assembly_name
;
1349 /* This could be called before startup */
1353 if (!static_aot_modules
)
1354 static_aot_modules
= g_hash_table_new (g_str_hash
, g_str_equal
);
1356 g_hash_table_insert (static_aot_modules
, aname
, info
);
1363 mono_aot_init (void)
1365 InitializeCriticalSection (&aot_mutex
);
1366 aot_modules
= g_hash_table_new (NULL
, NULL
);
1368 mono_install_assembly_load_hook (load_aot_module
, NULL
);
1370 if (g_getenv ("MONO_LASTAOT"))
1371 mono_last_aot_method
= atoi (g_getenv ("MONO_LASTAOT"));
1372 if (g_getenv ("MONO_AOT_CACHE"))
1373 use_aot_cache
= TRUE
;
1377 mono_aot_cleanup (void)
1379 if (aot_jit_icall_hash
)
1380 g_hash_table_destroy (aot_jit_icall_hash
);
1382 g_hash_table_destroy (aot_modules
);
1386 decode_cached_class_info (MonoAotModule
*module
, MonoCachedClassInfo
*info
, guint8
*buf
, guint8
**endbuf
)
1392 info
->vtable_size
= decode_value (buf
, &buf
);
1393 if (info
->vtable_size
== -1)
1396 flags
= decode_value (buf
, &buf
);
1397 info
->ghcimpl
= (flags
>> 0) & 0x1;
1398 info
->has_finalize
= (flags
>> 1) & 0x1;
1399 info
->has_cctor
= (flags
>> 2) & 0x1;
1400 info
->has_nested_classes
= (flags
>> 3) & 0x1;
1401 info
->blittable
= (flags
>> 4) & 0x1;
1402 info
->has_references
= (flags
>> 5) & 0x1;
1403 info
->has_static_refs
= (flags
>> 6) & 0x1;
1404 info
->no_special_static_fields
= (flags
>> 7) & 0x1;
1405 info
->is_generic_container
= (flags
>> 8) & 0x1;
1407 if (info
->has_cctor
) {
1408 res
= decode_method_ref (module
, &ref
, buf
, &buf
);
1411 info
->cctor_token
= ref
.token
;
1413 if (info
->has_finalize
) {
1414 res
= decode_method_ref (module
, &ref
, buf
, &buf
);
1417 info
->finalize_image
= ref
.image
;
1418 info
->finalize_token
= ref
.token
;
1421 info
->instance_size
= decode_value (buf
, &buf
);
1422 info
->class_size
= decode_value (buf
, &buf
);
1423 info
->packing_size
= decode_value (buf
, &buf
);
1424 info
->min_align
= decode_value (buf
, &buf
);
1432 mono_aot_get_method_from_vt_slot (MonoDomain
*domain
, MonoVTable
*vtable
, int slot
)
1435 MonoClass
*klass
= vtable
->klass
;
1436 MonoAotModule
*amodule
= klass
->image
->aot_module
;
1438 MonoCachedClassInfo class_info
;
1443 if (MONO_CLASS_IS_INTERFACE (klass
) || klass
->rank
|| !amodule
)
1446 info
= &amodule
->blob
[mono_aot_get_offset (amodule
->class_info_offsets
, mono_metadata_token_index (klass
->type_token
) - 1)];
1449 err
= decode_cached_class_info (amodule
, &class_info
, p
, &p
);
1453 for (i
= 0; i
< slot
; ++i
)
1454 decode_method_ref (amodule
, &ref
, p
, &p
);
1456 res
= decode_method_ref (amodule
, &ref
, p
, &p
);
1459 if (ref
.no_aot_trampoline
)
1462 if (mono_metadata_token_index (ref
.token
) == 0)
1465 return mono_aot_get_method_from_token (domain
, ref
.image
, ref
.token
);
1469 mono_aot_get_cached_class_info (MonoClass
*klass
, MonoCachedClassInfo
*res
)
1471 MonoAotModule
*amodule
= klass
->image
->aot_module
;
1475 if (klass
->rank
|| !amodule
)
1478 p
= (guint8
*)&amodule
->blob
[mono_aot_get_offset (amodule
->class_info_offsets
, mono_metadata_token_index (klass
->type_token
) - 1)];
1480 err
= decode_cached_class_info (amodule
, res
, p
, &p
);
1488 * mono_aot_get_class_from_name:
1490 * Obtains a MonoClass with a given namespace and a given name which is located in IMAGE,
1491 * using a cache stored in the AOT file.
1492 * Stores the resulting class in *KLASS if found, stores NULL otherwise.
1494 * Returns: TRUE if the klass was found/not found in the cache, FALSE if no aot file was
1498 mono_aot_get_class_from_name (MonoImage
*image
, const char *name_space
, const char *name
, MonoClass
**klass
)
1500 MonoAotModule
*amodule
= image
->aot_module
;
1501 guint16
*table
, *entry
;
1504 char full_name_buf
[1024];
1506 const char *name2
, *name_space2
;
1508 guint32 cols
[MONO_TYPEDEF_SIZE
];
1509 GHashTable
*nspace_table
;
1511 if (!amodule
|| !amodule
->class_name_table
)
1518 /* First look in the cache */
1519 if (!amodule
->name_cache
)
1520 amodule
->name_cache
= g_hash_table_new (g_str_hash
, g_str_equal
);
1521 nspace_table
= g_hash_table_lookup (amodule
->name_cache
, name_space
);
1523 *klass
= g_hash_table_lookup (nspace_table
, name
);
1530 table_size
= amodule
->class_name_table
[0];
1531 table
= amodule
->class_name_table
+ 1;
1533 if (name_space
[0] == '\0')
1534 full_name
= g_strdup_printf ("%s", name
);
1536 if (strlen (name_space
) + strlen (name
) < 1000) {
1537 sprintf (full_name_buf
, "%s.%s", name_space
, name
);
1538 full_name
= full_name_buf
;
1540 full_name
= g_strdup_printf ("%s.%s", name_space
, name
);
1543 hash
= mono_metadata_str_hash (full_name
) % table_size
;
1544 if (full_name
!= full_name_buf
)
1547 entry
= &table
[hash
* 2];
1549 if (entry
[0] != 0) {
1550 t
= &image
->tables
[MONO_TABLE_TYPEDEF
];
1553 guint32 index
= entry
[0];
1554 guint32 next
= entry
[1];
1555 guint32 token
= mono_metadata_make_token (MONO_TABLE_TYPEDEF
, index
);
1557 name_table_accesses
++;
1559 mono_metadata_decode_row (t
, index
- 1, cols
, MONO_TYPEDEF_SIZE
);
1561 name2
= mono_metadata_string_heap (image
, cols
[MONO_TYPEDEF_NAME
]);
1562 name_space2
= mono_metadata_string_heap (image
, cols
[MONO_TYPEDEF_NAMESPACE
]);
1564 if (!strcmp (name
, name2
) && !strcmp (name_space
, name_space2
)) {
1566 *klass
= mono_class_get (image
, token
);
1571 nspace_table
= g_hash_table_lookup (amodule
->name_cache
, name_space
);
1572 if (!nspace_table
) {
1573 nspace_table
= g_hash_table_new (g_str_hash
, g_str_equal
);
1574 g_hash_table_insert (amodule
->name_cache
, (char*)name_space2
, nspace_table
);
1576 g_hash_table_insert (nspace_table
, (char*)name2
, *klass
);
1583 entry
= &table
[next
* 2];
1596 * decode_mono_eh_frame:
1598 * Decode the EH information emitted by our modified LLVM compiler and construct a
1599 * MonoJitInfo structure from it.
1600 * LOCKING: Acquires the domain lock.
1603 decode_llvm_mono_eh_frame (MonoAotModule
*amodule
, MonoDomain
*domain
,
1604 MonoMethod
*method
, guint8
*code
,
1605 MonoJitExceptionInfo
*clauses
, int num_clauses
,
1606 int extra_size
, GSList
**nesting
,
1607 int *this_reg
, int *this_offset
)
1610 guint8
*fde
, *cie
, *code_start
, *code_end
;
1611 int version
, fde_count
;
1613 int i
, j
, pos
, left
, right
, offset
, offset1
, offset2
, code_len
;
1614 MonoJitExceptionInfo
*ei
;
1615 guint32 fde_len
, ei_len
, nested_len
, nindex
;
1616 gpointer
*type_info
;
1618 MonoLLVMFDEInfo info
;
1620 g_assert (amodule
->mono_eh_frame
);
1622 p
= amodule
->mono_eh_frame
;
1624 /* p points to data emitted by LLVM in DwarfException::EmitMonoEHFrame () */
1628 g_assert (version
== 1);
1630 p
= ALIGN_PTR_TO (p
, 4);
1632 fde_count
= *(guint32
*)p
;
1636 /* There is +1 entry in the table */
1637 cie
= p
+ ((fde_count
+ 1) * 8);
1639 /* Binary search in the table to find the entry for code */
1640 offset
= code
- amodule
->mono_eh_frame
;
1645 pos
= (left
+ right
) / 2;
1647 offset1
= table
[(pos
* 2)];
1648 if (pos
+ 1 == fde_count
)
1650 offset2
= amodule
->code_end
- amodule
->code
;
1652 offset2
= table
[(pos
+ 1) * 2];
1654 if (offset
< offset1
)
1656 else if (offset
>= offset2
)
1662 code_start
= amodule
->mono_eh_frame
+ table
[(pos
* 2)];
1663 /* This won't overflow because there is +1 entry in the table */
1664 code_end
= amodule
->mono_eh_frame
+ table
[(pos
* 2) + 2];
1665 code_len
= code_end
- code_start
;
1667 g_assert (code
>= code_start
&& code
< code_end
);
1669 fde
= amodule
->mono_eh_frame
+ table
[(pos
* 2) + 1];
1670 /* This won't overflow because there is +1 entry in the table */
1671 fde_len
= table
[(pos
* 2) + 2 + 1] - table
[(pos
* 2) + 1];
1673 mono_unwind_decode_llvm_mono_fde (fde
, fde_len
, cie
, code_start
, &info
);
1675 ei_len
= info
.ex_info_len
;
1676 type_info
= info
.type_info
;
1677 *this_reg
= info
.this_reg
;
1678 *this_offset
= info
.this_offset
;
1680 /* Count number of nested clauses */
1682 for (i
= 0; i
< ei_len
; ++i
) {
1683 /* This might be unaligned */
1684 gint32 cindex1
= read32 (type_info
[i
]);
1687 for (l
= nesting
[cindex1
]; l
; l
= l
->next
) {
1688 gint32 nesting_cindex
= GPOINTER_TO_INT (l
->data
);
1690 for (j
= 0; j
< ei_len
; ++j
) {
1691 gint32 cindex2
= read32 (type_info
[j
]);
1693 if (cindex2
== nesting_cindex
)
1700 * LLVM might represent one IL region with multiple regions, so have to
1701 * allocate a new JI.
1704 mono_domain_alloc0 (domain
, MONO_SIZEOF_JIT_INFO
+ (sizeof (MonoJitExceptionInfo
) * (ei_len
+ nested_len
)) + extra_size
);
1706 jinfo
->code_size
= code_len
;
1707 jinfo
->used_regs
= mono_cache_unwind_info (info
.unw_info
, info
.unw_info_len
);
1708 jinfo
->method
= method
;
1709 jinfo
->code_start
= code
;
1710 jinfo
->domain_neutral
= 0;
1711 /* This signals that used_regs points to a normal cached unwind info */
1712 jinfo
->from_aot
= 0;
1713 jinfo
->num_clauses
= ei_len
+ nested_len
;
1715 for (i
= 0; i
< ei_len
; ++i
) {
1717 * orig_jinfo contains the original IL exception info saved by the AOT
1718 * compiler, we have to combine that with the information produced by LLVM
1720 /* The type_info entries contain IL clause indexes */
1721 int clause_index
= read32 (type_info
[i
]);
1722 MonoJitExceptionInfo
*jei
= &jinfo
->clauses
[i
];
1723 MonoJitExceptionInfo
*orig_jei
= &clauses
[clause_index
];
1725 g_assert (clause_index
< num_clauses
);
1726 jei
->flags
= orig_jei
->flags
;
1727 jei
->data
.catch_class
= orig_jei
->data
.catch_class
;
1729 jei
->try_start
= ei
[i
].try_start
;
1730 jei
->try_end
= ei
[i
].try_end
;
1731 jei
->handler_start
= ei
[i
].handler_start
;
1733 /* Make sure we transition to thumb when a handler starts */
1734 if (amodule
->thumb_end
&& (guint8
*)jei
->handler_start
< amodule
->thumb_end
)
1735 jei
->handler_start
= (void*)((mgreg_t
)jei
->handler_start
+ 1);
1738 /* See exception_cb () in mini-llvm.c as to why this is needed */
1740 for (i
= 0; i
< ei_len
; ++i
) {
1741 gint32 cindex1
= read32 (type_info
[i
]);
1744 for (l
= nesting
[cindex1
]; l
; l
= l
->next
) {
1745 gint32 nesting_cindex
= GPOINTER_TO_INT (l
->data
);
1747 for (j
= 0; j
< ei_len
; ++j
) {
1748 gint32 cindex2
= read32 (type_info
[j
]);
1750 if (cindex2
== nesting_cindex
) {
1752 * The try interval comes from the nested clause, everything else from the
1755 memcpy (&jinfo
->clauses
[nindex
], &jinfo
->clauses
[j
], sizeof (MonoJitExceptionInfo
));
1756 jinfo
->clauses
[nindex
].try_start
= jinfo
->clauses
[i
].try_start
;
1757 jinfo
->clauses
[nindex
].try_end
= jinfo
->clauses
[i
].try_end
;
1763 g_assert (nindex
== ei_len
+ nested_len
);
1769 * LOCKING: Acquires the domain lock.
1772 decode_exception_debug_info (MonoAotModule
*amodule
, MonoDomain
*domain
,
1773 MonoMethod
*method
, guint8
* ex_info
, guint8
*addr
,
1774 guint8
*code
, guint32 code_len
)
1776 int i
, buf_len
, num_clauses
;
1778 guint used_int_regs
, flags
;
1779 gboolean has_generic_jit_info
, has_dwarf_unwind_info
, has_clauses
, has_seq_points
, has_try_block_holes
;
1780 gboolean from_llvm
, has_gc_map
;
1782 int generic_info_size
, try_holes_info_size
, num_holes
, this_reg
= 0, this_offset
= 0;
1784 /* Load the method info from the AOT file */
1787 flags
= decode_value (p
, &p
);
1788 has_generic_jit_info
= (flags
& 1) != 0;
1789 has_dwarf_unwind_info
= (flags
& 2) != 0;
1790 has_clauses
= (flags
& 4) != 0;
1791 has_seq_points
= (flags
& 8) != 0;
1792 from_llvm
= (flags
& 16) != 0;
1793 has_try_block_holes
= (flags
& 32) != 0;
1794 has_gc_map
= (flags
& 64) != 0;
1796 if (has_dwarf_unwind_info
) {
1799 offset
= decode_value (p
, &p
);
1800 g_assert (offset
< (1 << 30));
1801 used_int_regs
= offset
;
1803 used_int_regs
= decode_value (p
, &p
);
1805 if (has_generic_jit_info
)
1806 generic_info_size
= sizeof (MonoGenericJitInfo
);
1808 generic_info_size
= 0;
1810 if (has_try_block_holes
) {
1811 num_holes
= decode_value (p
, &p
);
1812 try_holes_info_size
= sizeof (MonoTryBlockHoleTableJitInfo
) + num_holes
* sizeof (MonoTryBlockHoleJitInfo
);
1814 num_holes
= try_holes_info_size
= 0;
1816 /* Exception table */
1818 num_clauses
= decode_value (p
, &p
);
1823 MonoJitExceptionInfo
*clauses
;
1827 * Part of the info is encoded by the AOT compiler, the rest is in the .eh_frame
1830 clauses
= g_new0 (MonoJitExceptionInfo
, num_clauses
);
1831 nesting
= g_new0 (GSList
*, num_clauses
);
1833 for (i
= 0; i
< num_clauses
; ++i
) {
1834 MonoJitExceptionInfo
*ei
= &clauses
[i
];
1836 ei
->flags
= decode_value (p
, &p
);
1838 if (decode_value (p
, &p
))
1839 ei
->data
.catch_class
= decode_klass_ref (amodule
, p
, &p
);
1841 /* Read the list of nesting clauses */
1843 int nesting_index
= decode_value (p
, &p
);
1844 if (nesting_index
== -1)
1846 nesting
[i
] = g_slist_prepend (nesting
[i
], GINT_TO_POINTER (nesting_index
));
1850 jinfo
= decode_llvm_mono_eh_frame (amodule
, domain
, method
, code
, clauses
, num_clauses
, generic_info_size
+ try_holes_info_size
, nesting
, &this_reg
, &this_offset
);
1851 jinfo
->from_llvm
= 1;
1854 for (i
= 0; i
< num_clauses
; ++i
)
1855 g_slist_free (nesting
[i
]);
1859 mono_domain_alloc0 (domain
, MONO_SIZEOF_JIT_INFO
+ (sizeof (MonoJitExceptionInfo
) * num_clauses
) + generic_info_size
+ try_holes_info_size
);
1860 jinfo
->num_clauses
= num_clauses
;
1862 for (i
= 0; i
< jinfo
->num_clauses
; ++i
) {
1863 MonoJitExceptionInfo
*ei
= &jinfo
->clauses
[i
];
1865 ei
->flags
= decode_value (p
, &p
);
1867 ei
->exvar_offset
= decode_value (p
, &p
);
1869 if (ei
->flags
== MONO_EXCEPTION_CLAUSE_FILTER
|| ei
->flags
== MONO_EXCEPTION_CLAUSE_FINALLY
)
1870 ei
->data
.filter
= code
+ decode_value (p
, &p
);
1872 if (decode_value (p
, &p
))
1873 ei
->data
.catch_class
= decode_klass_ref (amodule
, p
, &p
);
1876 ei
->try_start
= code
+ decode_value (p
, &p
);
1877 ei
->try_end
= code
+ decode_value (p
, &p
);
1878 ei
->handler_start
= code
+ decode_value (p
, &p
);
1881 jinfo
->code_size
= code_len
;
1882 jinfo
->used_regs
= used_int_regs
;
1883 jinfo
->method
= method
;
1884 jinfo
->code_start
= code
;
1885 jinfo
->domain_neutral
= 0;
1886 jinfo
->from_aot
= 1;
1889 if (has_generic_jit_info
) {
1890 MonoGenericJitInfo
*gi
;
1892 jinfo
->has_generic_jit_info
= 1;
1894 gi
= mono_jit_info_get_generic_jit_info (jinfo
);
1898 gi
->has_this
= this_reg
!= -1;
1899 gi
->this_reg
= this_reg
;
1900 gi
->this_offset
= this_offset
;
1902 gi
->has_this
= decode_value (p
, &p
);
1903 gi
->this_reg
= decode_value (p
, &p
);
1904 gi
->this_offset
= decode_value (p
, &p
);
1907 /* This currently contains no data */
1908 gi
->generic_sharing_context
= g_new0 (MonoGenericSharingContext
, 1);
1910 jinfo
->method
= decode_resolve_method_ref (amodule
, p
, &p
);
1913 if (has_try_block_holes
) {
1914 MonoTryBlockHoleTableJitInfo
*table
;
1916 jinfo
->has_try_block_holes
= 1;
1918 table
= mono_jit_info_get_try_block_hole_table_info (jinfo
);
1921 table
->num_holes
= (guint16
)num_holes
;
1922 for (i
= 0; i
< num_holes
; ++i
) {
1923 MonoTryBlockHoleJitInfo
*hole
= &table
->holes
[i
];
1924 hole
->clause
= decode_value (p
, &p
);
1925 hole
->length
= decode_value (p
, &p
);
1926 hole
->offset
= decode_value (p
, &p
);
1930 if (has_seq_points
) {
1931 MonoSeqPointInfo
*seq_points
;
1932 int il_offset
, native_offset
, last_il_offset
, last_native_offset
, j
;
1934 int len
= decode_value (p
, &p
);
1936 seq_points
= g_malloc0 (sizeof (MonoSeqPointInfo
) + (len
- MONO_ZERO_LEN_ARRAY
) * sizeof (SeqPoint
));
1937 seq_points
->len
= len
;
1938 last_il_offset
= last_native_offset
= 0;
1939 for (i
= 0; i
< len
; ++i
) {
1940 SeqPoint
*sp
= &seq_points
->seq_points
[i
];
1941 il_offset
= last_il_offset
+ decode_value (p
, &p
);
1942 native_offset
= last_native_offset
+ decode_value (p
, &p
);
1944 sp
->il_offset
= il_offset
;
1945 sp
->native_offset
= native_offset
;
1947 sp
->next_len
= decode_value (p
, &p
);
1948 sp
->next
= g_new (int, sp
->next_len
);
1949 for (j
= 0; j
< sp
->next_len
; ++j
)
1950 sp
->next
[j
] = decode_value (p
, &p
);
1952 last_il_offset
= il_offset
;
1953 last_native_offset
= native_offset
;
1956 mono_domain_lock (domain
);
1957 g_hash_table_insert (domain_jit_info (domain
)->seq_points
, method
, seq_points
);
1958 mono_domain_unlock (domain
);
1961 /* Load debug info */
1962 buf_len
= decode_value (p
, &p
);
1963 mono_debug_add_aot_method (domain
, method
, code
, p
, buf_len
);
1967 int map_size
= decode_value (p
, &p
);
1968 /* The GC map requires 4 bytes of alignment */
1969 while ((guint64
)(gsize
)p
% 4)
1975 if (amodule
!= jinfo
->method
->klass
->image
->aot_module
) {
1978 ji_to_amodule
= g_hash_table_new (NULL
, NULL
);
1979 g_hash_table_insert (ji_to_amodule
, jinfo
, amodule
);
1987 * mono_aot_get_unwind_info:
1989 * Return a pointer to the DWARF unwind info belonging to JI.
1992 mono_aot_get_unwind_info (MonoJitInfo
*ji
, guint32
*unwind_info_len
)
1994 MonoAotModule
*amodule
= ji
->method
->klass
->image
->aot_module
;
1996 guint8
*code
= ji
->code_start
;
1999 g_assert (ji
->from_aot
);
2001 if (!(code
>= amodule
->code
&& code
<= amodule
->code_end
)) {
2002 /* ji belongs to a different aot module than amodule */
2004 g_assert (ji_to_amodule
);
2005 amodule
= g_hash_table_lookup (ji_to_amodule
, ji
);
2007 g_assert (code
>= amodule
->code
&& code
<= amodule
->code_end
);
2011 p
= amodule
->unwind_info
+ ji
->used_regs
;
2012 *unwind_info_len
= decode_value (p
, &p
);
2016 static G_GNUC_UNUSED
int
2017 compare_ints (const void *a
, const void *b
)
2019 return *(gint32
*)a
- *(gint32
*)b
;
2023 msort_code_offsets_internal (gint32
*array
, int lo
, int hi
, gint32
*scratch
)
2025 int mid
= (lo
+ hi
) / 2;
2032 for (i
= lo
; i
< hi
; ++i
)
2033 if (array
[(i
* 2)] > array
[(i
* 2) + 2])
2036 /* Already sorted */
2040 msort_code_offsets_internal (array
, lo
, mid
, scratch
);
2041 msort_code_offsets_internal (array
, mid
+ 1, hi
, scratch
);
2043 if (array
[mid
* 2] < array
[(mid
+ 1) * 2])
2049 for (i
= lo
; i
<= hi
; i
++) {
2050 if (t_lo
<= mid
&& ((t_hi
> hi
) || array
[t_lo
* 2] < array
[t_hi
* 2])) {
2051 scratch
[(i
* 2)] = array
[t_lo
* 2];
2052 scratch
[(i
* 2) + 1] = array
[(t_lo
*2) + 1];
2055 scratch
[(i
* 2)] = array
[t_hi
* 2];
2056 scratch
[(i
* 2) + 1] = array
[(t_hi
*2) + 1];
2060 for (i
= lo
; i
<= hi
; ++i
) {
2061 array
[(i
* 2)] = scratch
[i
* 2];
2062 array
[(i
* 2) + 1] = scratch
[(i
* 2) + 1];
2067 msort_code_offsets (gint32
*array
, int len
)
2071 scratch
= g_new (gint32
, len
* 2);
2072 msort_code_offsets_internal (array
, 0, len
- 1, scratch
);
2077 mono_aot_find_jit_info (MonoDomain
*domain
, MonoImage
*image
, gpointer addr
)
2079 int pos
, left
, right
, offset
, offset1
, offset2
, code_len
;
2080 int method_index
, table_len
, is_wrapper
;
2082 MonoAotModule
*amodule
= image
->aot_module
;
2085 guint8
*code
, *ex_info
, *p
;
2087 int nmethods
= amodule
->info
.nmethods
;
2088 gint32
*code_offsets
;
2094 if (domain
!= mono_get_root_domain ())
2098 offset
= (guint8
*)addr
- amodule
->code
;
2100 /* Compute a sorted table mapping code offsets to method indexes. */
2101 if (!amodule
->sorted_code_offsets
) {
2102 code_offsets
= g_new0 (gint32
, nmethods
* 2);
2104 for (i
= 0; i
< nmethods
; ++i
) {
2105 /* Skip the -1 entries to speed up sorting */
2106 if (amodule
->code_offsets
[i
] == 0xffffffff)
2108 code_offsets
[(offsets_len
* 2)] = amodule
->code_offsets
[i
];
2109 code_offsets
[(offsets_len
*2) + 1] = i
;
2112 /* Use a merge sort as this is mostly sorted */
2113 msort_code_offsets (code_offsets
, offsets_len
);
2114 //qsort (code_offsets, offsets_len, sizeof (gint32) * 2, compare_ints);
2115 for (i
= 0; i
< offsets_len
-1; ++i
)
2116 g_assert (code_offsets
[(i
* 2)] <= code_offsets
[(i
+ 1) * 2]);
2118 if (InterlockedCompareExchangePointer ((gpointer
*)&amodule
->sorted_code_offsets
, code_offsets
, NULL
) != NULL
)
2119 /* Somebody got in before us */
2120 g_free (code_offsets
);
2121 amodule
->sorted_code_offsets_len
= offsets_len
;
2124 code_offsets
= amodule
->sorted_code_offsets
;
2125 offsets_len
= amodule
->sorted_code_offsets_len
;
2127 /* Binary search in the sorted_code_offsets table */
2129 right
= offsets_len
;
2131 pos
= (left
+ right
) / 2;
2133 offset1
= code_offsets
[(pos
* 2)];
2134 if (pos
+ 1 == offsets_len
)
2135 offset2
= amodule
->code_end
- amodule
->code
;
2137 offset2
= code_offsets
[(pos
+ 1) * 2];
2139 if (offset
< offset1
)
2141 else if (offset
>= offset2
)
2147 g_assert (offset
>= code_offsets
[(pos
* 2)]);
2148 if (pos
+ 1 < offsets_len
)
2149 g_assert (offset
< code_offsets
[((pos
+ 1) * 2)]);
2150 method_index
= code_offsets
[(pos
* 2) + 1];
2152 code
= &amodule
->code
[amodule
->code_offsets
[method_index
]];
2153 ex_info
= &amodule
->blob
[mono_aot_get_offset (amodule
->ex_info_offsets
, method_index
)];
2155 if (pos
== offsets_len
- 1)
2156 code_len
= amodule
->code_end
- code
;
2158 code_len
= code_offsets
[(pos
+ 1) * 2] - code_offsets
[pos
* 2];
2160 g_assert ((guint8
*)code
<= (guint8
*)addr
&& (guint8
*)addr
< (guint8
*)code
+ code_len
);
2162 /* Might be a wrapper/extra method */
2163 if (amodule
->extra_methods
) {
2165 method
= g_hash_table_lookup (amodule
->extra_methods
, GUINT_TO_POINTER (method_index
));
2172 if (method_index
>= image
->tables
[MONO_TABLE_METHOD
].rows
) {
2174 * This is hit for extra methods which are called directly, so they are
2175 * not in amodule->extra_methods.
2177 table_len
= amodule
->extra_method_info_offsets
[0];
2178 table
= amodule
->extra_method_info_offsets
+ 1;
2185 pos
= ((left
+ right
) / 2);
2187 g_assert (pos
< table_len
);
2189 if (table
[pos
* 2] < method_index
)
2191 else if (table
[pos
* 2] > method_index
)
2197 p
= amodule
->blob
+ table
[(pos
* 2) + 1];
2198 is_wrapper
= decode_value (p
, &p
);
2199 g_assert (!is_wrapper
);
2200 method
= decode_resolve_method_ref (amodule
, p
, &p
);
2203 token
= mono_metadata_make_token (MONO_TABLE_METHOD
, method_index
+ 1);
2204 method
= mono_get_method (image
, token
, NULL
);
2211 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
2213 jinfo
= decode_exception_debug_info (amodule
, domain
, method
, ex_info
, addr
, code
, code_len
);
2215 g_assert ((guint8
*)addr
>= (guint8
*)jinfo
->code_start
);
2216 g_assert ((guint8
*)addr
< (guint8
*)jinfo
->code_start
+ jinfo
->code_size
);
2218 /* Add it to the normal JitInfo tables */
2219 mono_jit_info_table_add (domain
, jinfo
);
2225 decode_patch (MonoAotModule
*aot_module
, MonoMemPool
*mp
, MonoJumpInfo
*ji
, guint8
*buf
, guint8
**endbuf
)
2233 case MONO_PATCH_INFO_METHOD
:
2234 case MONO_PATCH_INFO_METHOD_JUMP
:
2235 case MONO_PATCH_INFO_ICALL_ADDR
:
2236 case MONO_PATCH_INFO_METHOD_RGCTX
: {
2240 res
= decode_method_ref (aot_module
, &ref
, p
, &p
);
2244 if (!ref
.method
&& !mono_aot_only
&& !ref
.no_aot_trampoline
&& (ji
->type
== MONO_PATCH_INFO_METHOD
) && (mono_metadata_token_table (ref
.token
) == MONO_TABLE_METHOD
)) {
2245 ji
->data
.target
= mono_create_ftnptr (mono_domain_get (), mono_create_jit_trampoline_from_token (ref
.image
, ref
.token
));
2246 ji
->type
= MONO_PATCH_INFO_ABS
;
2250 ji
->data
.method
= ref
.method
;
2252 ji
->data
.method
= mono_get_method (ref
.image
, ref
.token
, NULL
);
2253 g_assert (ji
->data
.method
);
2254 mono_class_init (ji
->data
.method
->klass
);
2258 case MONO_PATCH_INFO_INTERNAL_METHOD
:
2259 case MONO_PATCH_INFO_JIT_ICALL_ADDR
: {
2260 guint32 len
= decode_value (p
, &p
);
2262 ji
->data
.name
= (char*)p
;
2266 case MONO_PATCH_INFO_METHODCONST
:
2268 ji
->data
.method
= decode_resolve_method_ref (aot_module
, p
, &p
);
2269 if (!ji
->data
.method
)
2272 case MONO_PATCH_INFO_VTABLE
:
2273 case MONO_PATCH_INFO_CLASS
:
2274 case MONO_PATCH_INFO_IID
:
2275 case MONO_PATCH_INFO_ADJUSTED_IID
:
2277 ji
->data
.klass
= decode_klass_ref (aot_module
, p
, &p
);
2278 if (!ji
->data
.klass
)
2281 case MONO_PATCH_INFO_CLASS_INIT
:
2282 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE
:
2283 ji
->data
.klass
= decode_klass_ref (aot_module
, p
, &p
);
2284 if (!ji
->data
.klass
)
2287 case MONO_PATCH_INFO_IMAGE
:
2288 ji
->data
.image
= load_image (aot_module
, decode_value (p
, &p
), TRUE
);
2289 if (!ji
->data
.image
)
2292 case MONO_PATCH_INFO_FIELD
:
2293 case MONO_PATCH_INFO_SFLDA
:
2295 ji
->data
.field
= decode_field_info (aot_module
, p
, &p
);
2296 if (!ji
->data
.field
)
2299 case MONO_PATCH_INFO_SWITCH
:
2300 ji
->data
.table
= mono_mempool_alloc0 (mp
, sizeof (MonoJumpInfoBBTable
));
2301 ji
->data
.table
->table_size
= decode_value (p
, &p
);
2302 table
= mono_domain_alloc (mono_domain_get (), sizeof (gpointer
) * ji
->data
.table
->table_size
);
2303 ji
->data
.table
->table
= (MonoBasicBlock
**)table
;
2304 for (i
= 0; i
< ji
->data
.table
->table_size
; i
++)
2305 table
[i
] = (gpointer
)(gssize
)decode_value (p
, &p
);
2307 case MONO_PATCH_INFO_R4
: {
2310 ji
->data
.target
= mono_domain_alloc0 (mono_domain_get (), sizeof (float));
2311 val
= decode_value (p
, &p
);
2312 *(float*)ji
->data
.target
= *(float*)&val
;
2315 case MONO_PATCH_INFO_R8
: {
2319 ji
->data
.target
= mono_domain_alloc0 (mono_domain_get (), sizeof (double));
2321 val
[0] = decode_value (p
, &p
);
2322 val
[1] = decode_value (p
, &p
);
2323 v
= ((guint64
)val
[1] << 32) | ((guint64
)val
[0]);
2324 *(double*)ji
->data
.target
= *(double*)&v
;
2327 case MONO_PATCH_INFO_LDSTR
:
2328 image
= load_image (aot_module
, decode_value (p
, &p
), TRUE
);
2331 ji
->data
.token
= mono_jump_info_token_new (mp
, image
, MONO_TOKEN_STRING
+ decode_value (p
, &p
));
2333 case MONO_PATCH_INFO_RVA
:
2334 case MONO_PATCH_INFO_DECLSEC
:
2335 case MONO_PATCH_INFO_LDTOKEN
:
2336 case MONO_PATCH_INFO_TYPE_FROM_HANDLE
:
2338 image
= load_image (aot_module
, decode_value (p
, &p
), TRUE
);
2341 ji
->data
.token
= mono_jump_info_token_new (mp
, image
, decode_value (p
, &p
));
2343 ji
->data
.token
->has_context
= decode_value (p
, &p
);
2344 if (ji
->data
.token
->has_context
) {
2345 gboolean res
= decode_generic_context (aot_module
, &ji
->data
.token
->context
, p
, &p
);
2350 case MONO_PATCH_INFO_EXC_NAME
:
2351 ji
->data
.klass
= decode_klass_ref (aot_module
, p
, &p
);
2352 if (!ji
->data
.klass
)
2354 ji
->data
.name
= ji
->data
.klass
->name
;
2356 case MONO_PATCH_INFO_METHOD_REL
:
2357 ji
->data
.offset
= decode_value (p
, &p
);
2359 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG
:
2360 case MONO_PATCH_INFO_GENERIC_CLASS_INIT
:
2361 case MONO_PATCH_INFO_MONITOR_ENTER
:
2362 case MONO_PATCH_INFO_MONITOR_EXIT
:
2363 case MONO_PATCH_INFO_GC_CARD_TABLE_ADDR
:
2364 case MONO_PATCH_INFO_CASTCLASS_CACHE
:
2366 case MONO_PATCH_INFO_RGCTX_FETCH
: {
2368 MonoJumpInfoRgctxEntry
*entry
;
2370 entry
= mono_mempool_alloc0 (mp
, sizeof (MonoJumpInfoRgctxEntry
));
2371 entry
->method
= decode_resolve_method_ref (aot_module
, p
, &p
);
2372 entry
->in_mrgctx
= decode_value (p
, &p
);
2373 entry
->info_type
= decode_value (p
, &p
);
2374 entry
->data
= mono_mempool_alloc0 (mp
, sizeof (MonoJumpInfo
));
2375 entry
->data
->type
= decode_value (p
, &p
);
2377 res
= decode_patch (aot_module
, mp
, entry
->data
, p
, &p
);
2380 ji
->data
.rgctx_entry
= entry
;
2383 case MONO_PATCH_INFO_SEQ_POINT_INFO
:
2385 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE
: {
2386 MonoJumpInfoImtTramp
*imt_tramp
= mono_mempool_alloc0 (mp
, sizeof (MonoJumpInfoImtTramp
));
2388 imt_tramp
->method
= decode_resolve_method_ref (aot_module
, p
, &p
);
2389 imt_tramp
->vt_offset
= decode_value (p
, &p
);
2391 ji
->data
.imt_tramp
= imt_tramp
;
2395 g_warning ("unhandled type %d", ji
->type
);
2396 g_assert_not_reached ();
2407 static MonoJumpInfo
*
2408 load_patch_info (MonoAotModule
*aot_module
, MonoMemPool
*mp
, int n_patches
,
2409 guint32
**got_slots
,
2410 guint8
*buf
, guint8
**endbuf
)
2412 MonoJumpInfo
*patches
;
2418 patches
= mono_mempool_alloc0 (mp
, sizeof (MonoJumpInfo
) * n_patches
);
2420 *got_slots
= g_malloc (sizeof (guint32
) * n_patches
);
2422 for (pindex
= 0; pindex
< n_patches
; ++pindex
) {
2423 MonoJumpInfo
*ji
= &patches
[pindex
];
2428 got_offset
= decode_value (p
, &p
);
2430 if (aot_module
->got
[got_offset
]) {
2431 /* Already loaded */
2432 //printf ("HIT!\n");
2434 shared_p
= aot_module
->blob
+ mono_aot_get_offset (aot_module
->got_info_offsets
, got_offset
);
2436 ji
->type
= decode_value (shared_p
, &shared_p
);
2438 res
= decode_patch (aot_module
, mp
, ji
, shared_p
, &shared_p
);
2443 (*got_slots
) [pindex
] = got_offset
;
2450 g_free (*got_slots
);
2457 register_jump_target_got_slot (MonoDomain
*domain
, MonoMethod
*method
, gpointer
*got_slot
)
2460 * Jump addresses cannot be patched by the trampoline code since it
2461 * does not have access to the caller's address. Instead, we collect
2462 * the addresses of the GOT slots pointing to a method, and patch
2463 * them after the method has been compiled.
2465 MonoJitDomainInfo
*info
= domain_jit_info (domain
);
2468 mono_domain_lock (domain
);
2469 if (!info
->jump_target_got_slot_hash
)
2470 info
->jump_target_got_slot_hash
= g_hash_table_new (NULL
, NULL
);
2471 list
= g_hash_table_lookup (info
->jump_target_got_slot_hash
, method
);
2472 list
= g_slist_prepend (list
, got_slot
);
2473 g_hash_table_insert (info
->jump_target_got_slot_hash
, method
, list
);
2474 mono_domain_unlock (domain
);
2480 * Load the method identified by METHOD_INDEX from the AOT image. Return a
2481 * pointer to the native code of the method, or NULL if not found.
2482 * METHOD might not be set if the caller only has the image/token info.
2485 load_method (MonoDomain
*domain
, MonoAotModule
*amodule
, MonoImage
*image
, MonoMethod
*method
, guint32 token
, int method_index
)
2488 gboolean from_plt
= method
== NULL
;
2490 int i
, pindex
, n_patches
, used_strings
;
2491 gboolean keep_patches
= TRUE
;
2493 MonoJitInfo
*jinfo
= NULL
;
2494 guint8
*code
, *info
;
2496 if (mono_profiler_get_events () & MONO_PROFILE_ENTER_LEAVE
)
2499 if ((domain
!= mono_get_root_domain ()) && (!(amodule
->info
.opts
& MONO_OPT_SHARED
)))
2500 /* Non shared AOT code can't be used in other appdomains */
2503 if (amodule
->out_of_date
)
2506 if (amodule
->code_offsets
[method_index
] == 0xffffffff) {
2507 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG
, MONO_TRACE_AOT
)) {
2511 method
= mono_get_method (image
, token
, NULL
);
2512 full_name
= mono_method_full_name (method
, TRUE
);
2513 mono_trace (G_LOG_LEVEL_DEBUG
, MONO_TRACE_AOT
, "AOT NOT FOUND: %s.\n", full_name
);
2519 code
= &amodule
->code
[amodule
->code_offsets
[method_index
]];
2521 info
= &amodule
->blob
[mono_aot_get_offset (amodule
->method_info_offsets
, method_index
)];
2523 if (amodule
->thumb_end
&& code
< amodule
->thumb_end
) {
2524 /* Convert this into a thumb address */
2525 g_assert ((amodule
->code_offsets
[method_index
] & 0x1) == 0);
2526 code
= &amodule
->code
[amodule
->code_offsets
[method_index
] + 1];
2530 if (!amodule
->methods_loaded
)
2531 amodule
->methods_loaded
= g_new0 (guint32
, amodule
->info
.nmethods
+ 1);
2534 if ((amodule
->methods_loaded
[method_index
/ 32] >> (method_index
% 32)) & 0x1)
2537 if (mono_last_aot_method
!= -1) {
2538 if (mono_jit_stats
.methods_aot
>= mono_last_aot_method
)
2540 else if (mono_jit_stats
.methods_aot
== mono_last_aot_method
- 1) {
2542 method
= mono_get_method (image
, token
, NULL
);
2544 char *name
= mono_method_full_name (method
, TRUE
);
2545 printf ("LAST AOT METHOD: %s.\n", name
);
2548 printf ("LAST AOT METHOD: %p %d\n", code
, method_index
);
2556 klass
= method
->klass
;
2557 decode_klass_ref (amodule
, p
, &p
);
2559 klass
= decode_klass_ref (amodule
, p
, &p
);
2562 if (amodule
->info
.opts
& MONO_OPT_SHARED
)
2563 used_strings
= decode_value (p
, &p
);
2567 for (i
= 0; i
< used_strings
; i
++) {
2568 guint token
= decode_value (p
, &p
);
2569 mono_ldstr (mono_get_root_domain (), image
, mono_metadata_token_index (token
));
2572 if (amodule
->info
.opts
& MONO_OPT_SHARED
)
2573 keep_patches
= FALSE
;
2575 n_patches
= decode_value (p
, &p
);
2577 keep_patches
= FALSE
;
2580 MonoJumpInfo
*patches
;
2586 mp
= mono_mempool_new ();
2588 patches
= load_patch_info (amodule
, mp
, n_patches
, &got_slots
, p
, &p
);
2589 if (patches
== NULL
)
2592 for (pindex
= 0; pindex
< n_patches
; ++pindex
) {
2593 MonoJumpInfo
*ji
= &patches
[pindex
];
2595 if (!amodule
->got
[got_slots
[pindex
]]) {
2596 amodule
->got
[got_slots
[pindex
]] = mono_resolve_patch_target (method
, domain
, code
, ji
, TRUE
);
2597 if (ji
->type
== MONO_PATCH_INFO_METHOD_JUMP
)
2598 amodule
->got
[got_slots
[pindex
]] = mono_create_ftnptr (domain
, amodule
->got
[got_slots
[pindex
]]);
2599 if (ji
->type
== MONO_PATCH_INFO_METHOD_JUMP
)
2600 register_jump_target_got_slot (domain
, ji
->data
.method
, &(amodule
->got
[got_slots
[pindex
]]));
2602 ji
->type
= MONO_PATCH_INFO_NONE
;
2608 mono_mempool_destroy (mp
);
2611 if (mono_trace_is_traced (G_LOG_LEVEL_DEBUG
, MONO_TRACE_AOT
)) {
2615 method
= mono_get_method (image
, token
, NULL
);
2617 full_name
= mono_method_full_name (method
, TRUE
);
2620 jinfo
= mono_aot_find_jit_info (domain
, amodule
->assembly
->image
, code
);
2622 mono_trace (G_LOG_LEVEL_DEBUG
, MONO_TRACE_AOT
, "AOT FOUND method %s [%p - %p %p]\n", full_name
, code
, code
+ jinfo
->code_size
, info
);
2628 InterlockedIncrement (&mono_jit_stats
.methods_aot
);
2630 amodule
->methods_loaded
[method_index
/ 32] |= 1 << (method_index
% 32);
2634 if (method
&& method
->wrapper_type
)
2635 g_hash_table_insert (amodule
->method_to_code
, method
, code
);
2639 if (mono_profiler_get_events () & MONO_PROFILE_JIT_COMPILATION
) {
2643 method
= mono_get_method (image
, token
, NULL
);
2646 mono_profiler_method_jit (method
);
2647 jinfo
= mono_jit_info_table_find (domain
, (char*)code
);
2649 mono_profiler_method_end_jit (method
, jinfo
, MONO_PROFILE_OK
);
2652 if (from_plt
&& klass
&& !klass
->generic_container
)
2653 mono_runtime_class_init (mono_class_vtable (domain
, klass
));
2658 /* FIXME: The space in domain->mp is wasted */
2659 if (amodule
->info
.opts
& MONO_OPT_SHARED
)
2660 /* No need to cache patches */
2661 mono_mempool_destroy (mp
);
2670 find_extra_method_in_amodule (MonoAotModule
*amodule
, MonoMethod
*method
, const char *name
)
2672 guint32 table_size
, entry_size
, hash
;
2673 guint32
*table
, *entry
;
2675 static guint32 n_extra_decodes
;
2680 table_size
= amodule
->extra_method_table
[0];
2681 table
= amodule
->extra_method_table
+ 1;
2684 hash
= mono_aot_method_hash (method
) % table_size
;
2686 entry
= &table
[hash
* entry_size
];
2693 guint32 key
= entry
[0];
2694 guint32 value
= entry
[1];
2695 guint32 next
= entry
[entry_size
- 1];
2698 int is_wrapper_name
;
2700 p
= amodule
->blob
+ key
;
2701 is_wrapper_name
= decode_value (p
, &p
);
2702 if (is_wrapper_name
) {
2703 int wrapper_type
= decode_value (p
, &p
);
2704 if (wrapper_type
== method
->wrapper_type
&& !strcmp (name
, (char*)p
)) {
2712 if (!amodule
->method_ref_to_method
)
2713 amodule
->method_ref_to_method
= g_hash_table_new (NULL
, NULL
);
2714 m
= g_hash_table_lookup (amodule
->method_ref_to_method
, p
);
2717 m
= decode_resolve_method_ref_with_target (amodule
, method
, p
, &p
);
2720 g_hash_table_insert (amodule
->method_ref_to_method
, orig_p
, m
);
2729 /* Special case: wrappers of shared generic methods */
2730 if (m
&& method
->wrapper_type
&& m
->wrapper_type
== m
->wrapper_type
&&
2731 method
->wrapper_type
== MONO_WRAPPER_SYNCHRONIZED
) {
2732 MonoMethod
*w1
= mono_marshal_method_from_wrapper (method
);
2733 MonoMethod
*w2
= mono_marshal_method_from_wrapper (m
);
2735 if (w1
->is_inflated
&& ((MonoMethodInflated
*)w1
)->declaring
== w2
) {
2741 /* Methods decoded needlessly */
2743 //printf ("%d %s %s %p\n", n_extra_decodes, mono_method_full_name (method, TRUE), mono_method_full_name (m, TRUE), orig_p);
2749 entry
= &table
[next
* entry_size
];
2758 add_module_cb (gpointer key
, gpointer value
, gpointer user_data
)
2760 g_ptr_array_add ((GPtrArray
*)user_data
, value
);
2764 * find_extra_method:
2766 * Try finding METHOD in the extra_method table in all AOT images.
2767 * Return its method index, or 0xffffff if not found. Set OUT_AMODULE to the AOT
2768 * module where the method was found.
2771 find_extra_method (MonoMethod
*method
, MonoAotModule
**out_amodule
)
2778 if (method
->wrapper_type
)
2779 name
= mono_aot_wrapper_name (method
);
2781 /* Try the method's module first */
2782 *out_amodule
= method
->klass
->image
->aot_module
;
2783 index
= find_extra_method_in_amodule (method
->klass
->image
->aot_module
, method
, name
);
2784 if (index
!= 0xffffff) {
2790 * Try all other modules.
2791 * This is needed because generic instances klass->image points to the image
2792 * containing the generic definition, but the native code is generated to the
2793 * AOT image which contains the reference.
2796 /* Make a copy to avoid doing the search inside the aot lock */
2797 modules
= g_ptr_array_new ();
2799 g_hash_table_foreach (aot_modules
, add_module_cb
, modules
);
2803 for (i
= 0; i
< modules
->len
; ++i
) {
2804 MonoAotModule
*amodule
= g_ptr_array_index (modules
, i
);
2806 if (amodule
!= method
->klass
->image
->aot_module
)
2807 index
= find_extra_method_in_amodule (amodule
, method
, name
);
2808 if (index
!= 0xffffff) {
2809 *out_amodule
= amodule
;
2814 g_ptr_array_free (modules
, TRUE
);
2821 * mono_aot_get_method:
2823 * Return a pointer to the AOTed native code for METHOD if it can be found,
2825 * On platforms with function pointers, this doesn't return a function pointer.
2828 mono_aot_get_method (MonoDomain
*domain
, MonoMethod
*method
)
2830 MonoClass
*klass
= method
->klass
;
2831 guint32 method_index
;
2832 MonoAotModule
*amodule
= klass
->image
->aot_module
;
2838 if (amodule
->out_of_date
)
2841 if ((method
->iflags
& METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL
) ||
2842 (method
->flags
& METHOD_ATTRIBUTE_PINVOKE_IMPL
) ||
2843 (method
->iflags
& METHOD_IMPL_ATTRIBUTE_RUNTIME
) ||
2844 (method
->flags
& METHOD_ATTRIBUTE_ABSTRACT
))
2848 * Use the original method instead of its invoke-with-check wrapper.
2849 * This is not a problem when using full-aot, since it doesn't support
2852 if (mono_aot_only
&& method
->wrapper_type
== MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK
)
2853 return mono_aot_get_method (domain
, mono_marshal_method_from_wrapper (method
));
2855 g_assert (klass
->inited
);
2857 /* Find method index */
2858 if (method
->is_inflated
&& mono_method_is_generic_sharable_impl_full (method
, FALSE
, FALSE
)) {
2860 * For generic methods, we store the fully shared instance in place of the
2863 method
= mono_method_get_declaring_generic_method (method
);
2864 method_index
= mono_metadata_token_index (method
->token
) - 1;
2865 } else if (method
->is_inflated
|| !method
->token
) {
2866 /* This hash table is used to avoid the slower search in the extra_method_table in the AOT image */
2868 code
= g_hash_table_lookup (amodule
->method_to_code
, method
);
2873 method_index
= find_extra_method (method
, &amodule
);
2875 * Special case the ICollection<T> wrappers for arrays, as they cannot
2876 * be statically enumerated, and each wrapper ends up calling the same
2879 if (method_index
== 0xffffff && method
->wrapper_type
== MONO_WRAPPER_MANAGED_TO_MANAGED
&& method
->klass
->rank
&& strstr (method
->name
, "System.Collections.Generic")) {
2880 MonoMethod
*m
= mono_aot_get_array_helper_from_wrapper (method
);
2882 code
= mono_aot_get_method (domain
, m
);
2884 if (mono_method_needs_static_rgctx_invoke (m
, FALSE
)) {
2885 code
= mono_create_static_rgctx_trampoline (m
, mono_create_ftnptr (domain
, code
));
2886 /* The call above returns an ftnptr */
2887 code
= mono_get_addr_from_ftnptr (code
);
2895 * Special case Array.GetGenericValueImpl which is a generic icall.
2896 * Generic sharing currently can't handle it, but the icall returns data using
2897 * an out parameter, so the managed-to-native wrappers can share the same code.
2899 if (method_index
== 0xffffff && method
->wrapper_type
== MONO_WRAPPER_MANAGED_TO_NATIVE
&& method
->klass
== mono_defaults
.array_class
&& !strcmp (method
->name
, "GetGenericValueImpl")) {
2901 MonoGenericContext ctx
;
2902 MonoType
*args
[16];
2904 if (mono_method_signature (method
)->params
[1]->type
== MONO_TYPE_OBJECT
)
2905 /* Avoid recursion */
2908 m
= mono_class_get_method_from_name (mono_defaults
.array_class
, "GetGenericValueImpl", 2);
2911 memset (&ctx
, 0, sizeof (ctx
));
2912 args
[0] = &mono_defaults
.object_class
->byval_arg
;
2913 ctx
.method_inst
= mono_metadata_get_generic_inst (1, args
);
2915 m
= mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m
, &ctx
), TRUE
, TRUE
);
2918 * Get the code for the <object> instantiation which should be emitted into
2919 * the mscorlib aot image by the AOT compiler.
2921 code
= mono_aot_get_method (domain
, m
);
2926 /* Same for CompareExchange<T> */
2927 if (method_index
== 0xffffff && method
->wrapper_type
== MONO_WRAPPER_MANAGED_TO_NATIVE
&& method
->klass
->image
== mono_defaults
.corlib
&& !strcmp (method
->klass
->name_space
, "System.Threading") && !strcmp (method
->klass
->name
, "Interlocked") && !strcmp (method
->name
, "CompareExchange") && MONO_TYPE_IS_REFERENCE (mono_method_signature (method
)->params
[1])) {
2929 MonoGenericContext ctx
;
2930 MonoType
*args
[16];
2931 gpointer iter
= NULL
;
2933 while ((m
= mono_class_get_methods (method
->klass
, &iter
))) {
2934 if (mono_method_signature (m
)->generic_param_count
&& !strcmp (m
->name
, "CompareExchange"))
2939 memset (&ctx
, 0, sizeof (ctx
));
2940 args
[0] = &mono_defaults
.object_class
->byval_arg
;
2941 ctx
.method_inst
= mono_metadata_get_generic_inst (1, args
);
2943 m
= mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (m
, &ctx
), TRUE
, TRUE
);
2945 /* Avoid recursion */
2950 * Get the code for the <object> instantiation which should be emitted into
2951 * the mscorlib aot image by the AOT compiler.
2953 code
= mono_aot_get_method (domain
, m
);
2958 if (method_index
== 0xffffff && method
->is_inflated
&& mono_method_is_generic_sharable_impl_full (method
, FALSE
, TRUE
)) {
2959 /* Partial sharing */
2960 method_index
= find_extra_method (mini_get_shared_method (method
), &amodule
);
2963 if (method_index
== 0xffffff) {
2964 if (mono_aot_only
&& mono_trace_is_traced (G_LOG_LEVEL_DEBUG
, MONO_TRACE_AOT
)) {
2967 full_name
= mono_method_full_name (method
, TRUE
);
2968 mono_trace (G_LOG_LEVEL_DEBUG
, MONO_TRACE_AOT
, "AOT NOT FOUND: %s.\n", full_name
);
2974 if (method_index
== 0xffffff)
2977 /* Needed by find_jit_info */
2979 if (!amodule
->extra_methods
)
2980 amodule
->extra_methods
= g_hash_table_new (NULL
, NULL
);
2981 g_hash_table_insert (amodule
->extra_methods
, GUINT_TO_POINTER (method_index
), method
);
2985 method_index
= mono_metadata_token_index (method
->token
) - 1;
2988 return load_method (domain
, amodule
, klass
->image
, method
, method
->token
, method_index
);
2992 * Same as mono_aot_get_method, but we try to avoid loading any metadata from the
2996 mono_aot_get_method_from_token (MonoDomain
*domain
, MonoImage
*image
, guint32 token
)
2998 MonoAotModule
*aot_module
= image
->aot_module
;
3004 method_index
= mono_metadata_token_index (token
) - 1;
3006 return load_method (domain
, aot_module
, image
, NULL
, token
, method_index
);
3012 } IsGotEntryUserData
;
3015 check_is_got_entry (gpointer key
, gpointer value
, gpointer user_data
)
3017 IsGotEntryUserData
*data
= (IsGotEntryUserData
*)user_data
;
3018 MonoAotModule
*aot_module
= (MonoAotModule
*)value
;
3020 if (aot_module
->got
&& (data
->addr
>= (guint8
*)(aot_module
->got
)) && (data
->addr
< (guint8
*)(aot_module
->got
+ aot_module
->info
.got_size
)))
3025 mono_aot_is_got_entry (guint8
*code
, guint8
*addr
)
3027 IsGotEntryUserData user_data
;
3032 user_data
.addr
= addr
;
3033 user_data
.res
= FALSE
;
3035 g_hash_table_foreach (aot_modules
, check_is_got_entry
, &user_data
);
3038 return user_data
.res
;
3043 MonoAotModule
*module
;
3044 } FindAotModuleUserData
;
3047 find_aot_module_cb (gpointer key
, gpointer value
, gpointer user_data
)
3049 FindAotModuleUserData
*data
= (FindAotModuleUserData
*)user_data
;
3050 MonoAotModule
*aot_module
= (MonoAotModule
*)value
;
3052 if ((data
->addr
>= (guint8
*)(aot_module
->code
)) && (data
->addr
< (guint8
*)(aot_module
->code_end
)))
3053 data
->module
= aot_module
;
3056 static inline MonoAotModule
*
3057 find_aot_module (guint8
*code
)
3059 FindAotModuleUserData user_data
;
3064 /* Reading these need no locking */
3065 if (((gsize
)code
< aot_code_low_addr
) || ((gsize
)code
> aot_code_high_addr
))
3068 user_data
.addr
= code
;
3069 user_data
.module
= NULL
;
3072 g_hash_table_foreach (aot_modules
, find_aot_module_cb
, &user_data
);
3075 return user_data
.module
;
3079 mono_aot_patch_plt_entry (guint8
*code
, gpointer
*got
, mgreg_t
*regs
, guint8
*addr
)
3082 * Since AOT code is only used in the root domain,
3083 * mono_domain_get () != mono_get_root_domain () means the calling method
3084 * is AppDomain:InvokeInDomain, so this is the same check as in
3085 * mono_method_same_domain () but without loading the metadata for the method.
3087 if (mono_domain_get () == mono_get_root_domain ())
3088 mono_arch_patch_plt_entry (code
, got
, regs
, addr
);
3092 * mono_aot_plt_resolve:
3094 * This function is called by the entries in the PLT to resolve the actual method that
3095 * needs to be called. It returns a trampoline to the method and patches the PLT entry.
3096 * Returns NULL if the something cannot be loaded.
3099 mono_aot_plt_resolve (gpointer aot_module
, guint32 plt_info_offset
, guint8
*code
)
3101 #ifdef MONO_ARCH_AOT_SUPPORTED
3102 guint8
*p
, *target
, *plt_entry
;
3104 MonoAotModule
*module
= (MonoAotModule
*)aot_module
;
3105 gboolean res
, no_ftnptr
= FALSE
;
3108 //printf ("DYN: %p %d\n", aot_module, plt_info_offset);
3110 p
= &module
->blob
[plt_info_offset
];
3112 ji
.type
= decode_value (p
, &p
);
3114 mp
= mono_mempool_new_size (512);
3115 res
= decode_patch (module
, mp
, &ji
, p
, &p
);
3118 mono_mempool_destroy (mp
);
3123 * Avoid calling resolve_patch_target in the full-aot case if possible, since
3124 * it would create a trampoline, and we don't need that.
3125 * We could do this only if the method does not need the special handling
3126 * in mono_magic_trampoline ().
3128 if (mono_aot_only
&& ji
.type
== MONO_PATCH_INFO_METHOD
&& !ji
.data
.method
->is_generic
&& !mono_method_check_context_used (ji
.data
.method
) && !(ji
.data
.method
->iflags
& METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED
) &&
3129 !mono_method_needs_static_rgctx_invoke (ji
.data
.method
, FALSE
)) {
3130 target
= mono_jit_compile_method (ji
.data
.method
);
3133 target
= mono_resolve_patch_target (NULL
, mono_domain_get (), NULL
, &ji
, TRUE
);
3137 * The trampoline expects us to return a function descriptor on platforms which use
3138 * it, but resolve_patch_target returns a direct function pointer for some type of
3139 * patches, so have to translate between the two.
3140 * FIXME: Clean this up, but how ?
3142 if (ji
.type
== MONO_PATCH_INFO_ABS
|| ji
.type
== MONO_PATCH_INFO_INTERNAL_METHOD
|| ji
.type
== MONO_PATCH_INFO_CLASS_INIT
|| ji
.type
== MONO_PATCH_INFO_ICALL_ADDR
|| ji
.type
== MONO_PATCH_INFO_JIT_ICALL_ADDR
|| ji
.type
== MONO_PATCH_INFO_RGCTX_FETCH
) {
3143 /* These should already have a function descriptor */
3144 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3145 /* Our function descriptors have a 0 environment, gcc created ones don't */
3146 if (ji
.type
!= MONO_PATCH_INFO_INTERNAL_METHOD
&& ji
.type
!= MONO_PATCH_INFO_JIT_ICALL_ADDR
&& ji
.type
!= MONO_PATCH_INFO_ICALL_ADDR
)
3147 g_assert (((gpointer
*)target
) [2] == 0);
3150 } else if (!no_ftnptr
) {
3151 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3152 g_assert (((gpointer
*)target
) [2] != 0);
3154 target
= mono_create_ftnptr (mono_domain_get (), target
);
3157 mono_mempool_destroy (mp
);
3159 /* Patch the PLT entry with target which might be the actual method not a trampoline */
3160 plt_entry
= mono_aot_get_plt_entry (code
);
3161 g_assert (plt_entry
);
3162 mono_aot_patch_plt_entry (plt_entry
, module
->got
, NULL
, target
);
3166 g_assert_not_reached ();
3174 * Initialize the PLT table of the AOT module. Called lazily when the first AOT
3175 * method in the module is loaded to avoid committing memory by writing to it.
3176 * LOCKING: Assumes the AOT lock is held.
3179 init_plt (MonoAotModule
*amodule
)
3184 if (amodule
->plt_inited
)
3187 tramp
= mono_create_specific_trampoline (amodule
, MONO_TRAMPOLINE_AOT_PLT
, mono_get_root_domain (), NULL
);
3190 * Initialize the PLT entries in the GOT to point to the default targets.
3193 tramp
= mono_create_ftnptr (mono_domain_get (), tramp
);
3194 for (i
= 1; i
< amodule
->info
.plt_size
; ++i
)
3195 /* All the default entries point to the AOT trampoline */
3196 ((gpointer
*)amodule
->got
)[amodule
->info
.plt_got_offset_base
+ i
] = tramp
;
3198 amodule
->plt_inited
= TRUE
;
3202 * mono_aot_get_plt_entry:
3204 * Return the address of the PLT entry called by the code at CODE if exists.
3207 mono_aot_get_plt_entry (guint8
*code
)
3209 MonoAotModule
*amodule
= find_aot_module (code
);
3210 guint8
*target
= NULL
;
3216 if (amodule
->thumb_end
&& code
< amodule
->thumb_end
) {
3217 return mono_arm_get_thumb_plt_entry (code
);
3221 #ifdef MONO_ARCH_AOT_SUPPORTED
3222 target
= mono_arch_get_call_target (code
);
3224 g_assert_not_reached ();
3227 if ((target
>= (guint8
*)(amodule
->plt
)) && (target
< (guint8
*)(amodule
->plt_end
)))
3234 * mono_aot_get_plt_info_offset:
3236 * Return the PLT info offset belonging to the plt entry called by CODE.
3239 mono_aot_get_plt_info_offset (mgreg_t
*regs
, guint8
*code
)
3241 guint8
*plt_entry
= mono_aot_get_plt_entry (code
);
3243 g_assert (plt_entry
);
3245 /* The offset is embedded inside the code after the plt entry */
3246 #ifdef MONO_ARCH_AOT_SUPPORTED
3247 return mono_arch_get_plt_info_offset (plt_entry
, regs
, code
);
3249 g_assert_not_reached ();
3255 mono_create_ftnptr_malloc (guint8
*code
)
3257 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
3258 MonoPPCFunctionDescriptor
*ftnptr
= g_malloc0 (sizeof (MonoPPCFunctionDescriptor
));
3260 ftnptr
->code
= code
;
3271 * mono_aot_register_jit_icall:
3273 * Register a JIT icall which is called by trampolines in full-aot mode. This should
3274 * be called from mono_arch_init () during startup.
3277 mono_aot_register_jit_icall (const char *name
, gpointer addr
)
3279 /* No need for locking */
3280 if (!aot_jit_icall_hash
)
3281 aot_jit_icall_hash
= g_hash_table_new (g_str_hash
, g_str_equal
);
3282 g_hash_table_insert (aot_jit_icall_hash
, (char*)name
, addr
);
3288 * Load the function named NAME from the aot image.
3291 load_function (MonoAotModule
*amodule
, const char *name
)
3295 int n_patches
, pindex
;
3301 symbol
= g_strdup_printf ("%s", name
);
3302 find_symbol (amodule
->sofile
, amodule
->globals
, symbol
, (gpointer
*)&code
);
3305 g_error ("Symbol '%s' not found in AOT file '%s'.\n", name
, amodule
->aot_name
);
3307 mono_trace (G_LOG_LEVEL_DEBUG
, MONO_TRACE_AOT
, "AOT FOUND function '%s' in AOT file '%s'.\n", name
, amodule
->aot_name
);
3311 symbol
= g_strdup_printf ("%s_p", name
);
3312 find_symbol (amodule
->sofile
, amodule
->globals
, symbol
, (gpointer
*)&p
);
3315 /* Nothing to patch */
3318 p
= amodule
->blob
+ *(guint32
*)p
;
3320 /* Similar to mono_aot_load_method () */
3322 n_patches
= decode_value (p
, &p
);
3325 MonoJumpInfo
*patches
;
3328 mp
= mono_mempool_new ();
3330 patches
= load_patch_info (amodule
, mp
, n_patches
, &got_slots
, p
, &p
);
3333 for (pindex
= 0; pindex
< n_patches
; ++pindex
) {
3334 MonoJumpInfo
*ji
= &patches
[pindex
];
3337 if (amodule
->got
[got_slots
[pindex
]])
3341 * When this code is executed, the runtime may not be initalized yet, so
3342 * resolve the patch info by hand.
3344 if (ji
->type
== MONO_PATCH_INFO_JIT_ICALL_ADDR
) {
3345 if (!strcmp (ji
->data
.name
, "mono_get_lmf_addr")) {
3346 target
= mono_get_lmf_addr
;
3347 } else if (!strcmp (ji
->data
.name
, "mono_thread_force_interruption_checkpoint")) {
3348 target
= mono_thread_force_interruption_checkpoint
;
3349 } else if (!strcmp (ji
->data
.name
, "mono_exception_from_token")) {
3350 target
= mono_exception_from_token
;
3351 } else if (!strcmp (ji
->data
.name
, "mono_throw_exception")) {
3352 target
= mono_get_throw_exception ();
3353 } else if (strstr (ji
->data
.name
, "trampoline_func_") == ji
->data
.name
) {
3354 int tramp_type2
= atoi (ji
->data
.name
+ strlen ("trampoline_func_"));
3355 target
= (gpointer
)mono_get_trampoline_func (tramp_type2
);
3356 } else if (strstr (ji
->data
.name
, "specific_trampoline_lazy_fetch_") == ji
->data
.name
) {
3357 /* atoll is needed because the the offset is unsigned */
3361 res
= sscanf (ji
->data
.name
, "specific_trampoline_lazy_fetch_%u", &slot
);
3362 g_assert (res
== 1);
3363 target
= mono_create_specific_trampoline (GUINT_TO_POINTER (slot
), MONO_TRAMPOLINE_RGCTX_LAZY_FETCH
, mono_get_root_domain (), NULL
);
3364 target
= mono_create_ftnptr_malloc (target
);
3365 } else if (!strcmp (ji
->data
.name
, "specific_trampoline_monitor_enter")) {
3366 target
= mono_create_specific_trampoline (NULL
, MONO_TRAMPOLINE_MONITOR_ENTER
, mono_get_root_domain (), NULL
);
3367 target
= mono_create_ftnptr_malloc (target
);
3368 } else if (!strcmp (ji
->data
.name
, "specific_trampoline_monitor_exit")) {
3369 target
= mono_create_specific_trampoline (NULL
, MONO_TRAMPOLINE_MONITOR_EXIT
, mono_get_root_domain (), NULL
);
3370 target
= mono_create_ftnptr_malloc (target
);
3371 } else if (!strcmp (ji
->data
.name
, "specific_trampoline_generic_class_init")) {
3372 target
= mono_create_specific_trampoline (NULL
, MONO_TRAMPOLINE_GENERIC_CLASS_INIT
, mono_get_root_domain (), NULL
);
3373 target
= mono_create_ftnptr_malloc (target
);
3374 } else if (!strcmp (ji
->data
.name
, "mono_thread_get_and_clear_pending_exception")) {
3375 target
= mono_thread_get_and_clear_pending_exception
;
3376 } else if (strstr (ji
->data
.name
, "generic_trampoline_")) {
3377 target
= mono_aot_get_trampoline (ji
->data
.name
);
3378 } else if (aot_jit_icall_hash
&& g_hash_table_lookup (aot_jit_icall_hash
, ji
->data
.name
)) {
3379 /* Registered by mono_arch_init () */
3380 target
= g_hash_table_lookup (aot_jit_icall_hash
, ji
->data
.name
);
3382 fprintf (stderr
, "Unknown relocation '%s'\n", ji
->data
.name
);
3383 g_assert_not_reached ();
3387 /* Hopefully the code doesn't have patches which need method or
3390 target
= mono_resolve_patch_target (NULL
, NULL
, code
, ji
, FALSE
);
3394 amodule
->got
[got_slots
[pindex
]] = target
;
3399 mono_mempool_destroy (mp
);
3406 * Return the trampoline identified by NAME from the mscorlib AOT file.
3407 * On ppc64, this returns a function descriptor.
3410 mono_aot_get_trampoline (const char *name
)
3413 MonoAotModule
*amodule
;
3415 image
= mono_defaults
.corlib
;
3418 amodule
= image
->aot_module
;
3421 return mono_create_ftnptr_malloc (load_function (amodule
, name
));
3424 /* Return a given kind of trampoline */
3426 get_numerous_trampoline (MonoAotTrampoline tramp_type
, int n_got_slots
, MonoAotModule
**out_amodule
, guint32
*got_offset
, guint32
*out_tramp_size
)
3428 MonoAotModule
*amodule
;
3429 int index
, tramp_size
;
3432 /* Currently, we keep all trampolines in the mscorlib AOT image */
3433 image
= mono_defaults
.corlib
;
3438 amodule
= image
->aot_module
;
3441 *out_amodule
= amodule
;
3443 if (amodule
->trampoline_index
[tramp_type
] == amodule
->info
.num_trampolines
[tramp_type
])
3444 g_error ("Ran out of trampolines of type %d in '%s' (%d)\n", tramp_type
, image
->name
, amodule
->info
.num_trampolines
[tramp_type
]);
3446 index
= amodule
->trampoline_index
[tramp_type
] ++;
3450 *got_offset
= amodule
->info
.trampoline_got_offset_base
[tramp_type
] + (index
* n_got_slots
);
3452 tramp_size
= amodule
->info
.trampoline_size
[tramp_type
];
3455 *out_tramp_size
= tramp_size
;
3457 return amodule
->trampolines
[tramp_type
] + (index
* tramp_size
);
3461 * Return a specific trampoline from the AOT file.
3464 mono_aot_create_specific_trampoline (MonoImage
*image
, gpointer arg1
, MonoTrampolineType tramp_type
, MonoDomain
*domain
, guint32
*code_len
)
3466 MonoAotModule
*amodule
;
3467 guint32 got_offset
, tramp_size
;
3468 guint8
*code
, *tramp
;
3469 static gpointer generic_trampolines
[MONO_TRAMPOLINE_NUM
];
3470 static gboolean inited
;
3471 static guint32 num_trampolines
;
3477 mono_counters_register ("Specific trampolines", MONO_COUNTER_JIT
| MONO_COUNTER_INT
, &num_trampolines
);
3486 if (!generic_trampolines
[tramp_type
]) {
3489 symbol
= mono_get_generic_trampoline_name (tramp_type
);
3490 generic_trampolines
[tramp_type
] = mono_aot_get_trampoline (symbol
);
3494 tramp
= generic_trampolines
[tramp_type
];
3497 code
= get_numerous_trampoline (MONO_AOT_TRAMP_SPECIFIC
, 2, &amodule
, &got_offset
, &tramp_size
);
3499 amodule
->got
[got_offset
] = tramp
;
3500 amodule
->got
[got_offset
+ 1] = arg1
;
3503 *code_len
= tramp_size
;
3509 mono_aot_get_static_rgctx_trampoline (gpointer ctx
, gpointer addr
)
3511 MonoAotModule
*amodule
;
3515 code
= get_numerous_trampoline (MONO_AOT_TRAMP_STATIC_RGCTX
, 2, &amodule
, &got_offset
, NULL
);
3517 amodule
->got
[got_offset
] = ctx
;
3518 amodule
->got
[got_offset
+ 1] = addr
;
3520 /* The caller expects an ftnptr */
3521 return mono_create_ftnptr (mono_domain_get (), code
);
3525 mono_aot_get_unbox_trampoline (MonoMethod
*method
)
3527 guint32 method_index
= mono_metadata_token_index (method
->token
) - 1;
3528 MonoAotModule
*amodule
;
3532 if (method
->is_inflated
&& !mono_method_is_generic_sharable_impl (method
, FALSE
)) {
3533 guint32 index
= find_extra_method (method
, &amodule
);
3534 g_assert (index
!= 0xffffff);
3536 symbol
= g_strdup_printf ("ut_e_%d", index
);
3538 amodule
= method
->klass
->image
->aot_module
;
3541 symbol
= g_strdup_printf ("ut_%d", method_index
);
3543 code
= load_function (amodule
, symbol
);
3546 /* The caller expects an ftnptr */
3547 return mono_create_ftnptr (mono_domain_get (), code
);
3551 mono_aot_get_lazy_fetch_trampoline (guint32 slot
)
3556 symbol
= mono_get_rgctx_fetch_trampoline_name (slot
);
3557 code
= load_function (mono_defaults
.corlib
->aot_module
, symbol
);
3559 /* The caller expects an ftnptr */
3560 return mono_create_ftnptr (mono_domain_get (), code
);
3564 mono_aot_get_imt_thunk (MonoVTable
*vtable
, MonoDomain
*domain
, MonoIMTCheckItem
**imt_entries
, int count
, gpointer fail_tramp
)
3569 int i
, index
, real_count
;
3570 MonoAotModule
*amodule
;
3572 code
= get_numerous_trampoline (MONO_AOT_TRAMP_IMT_THUNK
, 1, &amodule
, &got_offset
, NULL
);
3575 for (i
= 0; i
< count
; ++i
) {
3576 MonoIMTCheckItem
*item
= imt_entries
[i
];
3578 if (item
->is_equals
)
3582 /* Save the entries into an array */
3583 buf
= mono_domain_alloc (domain
, (real_count
+ 1) * 2 * sizeof (gpointer
));
3585 for (i
= 0; i
< count
; ++i
) {
3586 MonoIMTCheckItem
*item
= imt_entries
[i
];
3588 if (!item
->is_equals
)
3591 g_assert (item
->key
);
3593 buf
[(index
* 2)] = item
->key
;
3594 if (item
->has_target_code
) {
3595 gpointer
*p
= mono_domain_alloc (domain
, sizeof (gpointer
));
3596 *p
= item
->value
.target_code
;
3597 buf
[(index
* 2) + 1] = p
;
3599 buf
[(index
* 2) + 1] = &(vtable
->vtable
[item
->value
.vtable_slot
]);
3603 buf
[(index
* 2)] = NULL
;
3604 buf
[(index
* 2) + 1] = fail_tramp
;
3606 amodule
->got
[got_offset
] = buf
;
3612 * mono_aot_set_make_unreadable:
3614 * Set whenever to make all mmaped memory unreadable. In conjuction with a
3615 * SIGSEGV handler, this is useful to find out which pages the runtime tries to read.
3618 mono_aot_set_make_unreadable (gboolean unreadable
)
3622 make_unreadable
= unreadable
;
3624 if (make_unreadable
&& !inited
) {
3625 mono_counters_register ("AOT pagefaults", MONO_COUNTER_JIT
| MONO_COUNTER_INT
, &n_pagefaults
);
3630 MonoAotModule
*module
;
3635 find_map (gpointer key
, gpointer value
, gpointer user_data
)
3637 MonoAotModule
*module
= (MonoAotModule
*)value
;
3638 FindMapUserData
*data
= (FindMapUserData
*)user_data
;
3641 if ((data
->ptr
>= module
->mem_begin
) && (data
->ptr
< module
->mem_end
))
3642 data
->module
= module
;
3645 static MonoAotModule
*
3646 find_module_for_addr (void *ptr
)
3648 FindMapUserData data
;
3650 if (!make_unreadable
)
3654 data
.ptr
= (guint8
*)ptr
;
3657 g_hash_table_foreach (aot_modules
, (GHFunc
)find_map
, &data
);
3664 * mono_aot_is_pagefault:
3666 * Should be called from a SIGSEGV signal handler to find out whenever @ptr is
3667 * within memory allocated by this module.
3670 mono_aot_is_pagefault (void *ptr
)
3672 if (!make_unreadable
)
3676 * Not signal safe, but SIGSEGV's are synchronous, and
3677 * this is only turned on by a MONO_DEBUG option.
3679 return find_module_for_addr (ptr
) != NULL
;
3683 * mono_aot_handle_pagefault:
3685 * Handle a pagefault caused by an unreadable page by making it readable again.
3688 mono_aot_handle_pagefault (void *ptr
)
3690 #ifndef PLATFORM_WIN32
3691 guint8
* start
= (guint8
*)ROUND_DOWN (((gssize
)ptr
), mono_pagesize ());
3695 res
= mono_mprotect (start
, mono_pagesize (), MONO_MMAP_READ
|MONO_MMAP_WRITE
|MONO_MMAP_EXEC
);
3696 g_assert (res
== 0);
3707 mono_aot_init (void)
3712 mono_aot_get_method (MonoDomain
*domain
, MonoMethod
*method
)
3718 mono_aot_is_got_entry (guint8
*code
, guint8
*addr
)
3724 mono_aot_get_cached_class_info (MonoClass
*klass
, MonoCachedClassInfo
*res
)
3730 mono_aot_get_class_from_name (MonoImage
*image
, const char *name_space
, const char *name
, MonoClass
**klass
)
3736 mono_aot_find_jit_info (MonoDomain
*domain
, MonoImage
*image
, gpointer addr
)
3742 mono_aot_get_method_from_token (MonoDomain
*domain
, MonoImage
*image
, guint32 token
)
3748 mono_aot_get_plt_entry (guint8
*code
)
3754 mono_aot_plt_resolve (gpointer aot_module
, guint32 plt_info_offset
, guint8
*code
)
3760 mono_aot_patch_plt_entry (guint8
*code
, gpointer
*got
, mgreg_t
*regs
, guint8
*addr
)
3765 mono_aot_get_method_from_vt_slot (MonoDomain
*domain
, MonoVTable
*vtable
, int slot
)
3771 mono_aot_get_plt_info_offset (mgreg_t
*regs
, guint8
*code
)
3773 g_assert_not_reached ();
3779 mono_aot_create_specific_trampoline (MonoImage
*image
, gpointer arg1
, MonoTrampolineType tramp_type
, MonoDomain
*domain
, guint32
*code_len
)
3781 g_assert_not_reached ();
3786 mono_aot_get_static_rgctx_trampoline (gpointer ctx
, gpointer addr
)
3788 g_assert_not_reached ();
3793 mono_aot_get_trampoline (const char *name
)
3795 g_assert_not_reached ();
3800 mono_aot_get_unbox_trampoline (MonoMethod
*method
)
3802 g_assert_not_reached ();
3807 mono_aot_get_lazy_fetch_trampoline (guint32 slot
)
3809 g_assert_not_reached ();
3814 mono_aot_get_imt_thunk (MonoVTable
*vtable
, MonoDomain
*domain
, MonoIMTCheckItem
**imt_entries
, int count
, gpointer fail_tramp
)
3816 g_assert_not_reached ();
3821 mono_aot_get_unwind_info (MonoJitInfo
*ji
, guint32
*unwind_info_len
)
3823 g_assert_not_reached ();
3828 mono_aot_register_jit_icall (const char *name
, gpointer addr
)