-
Notifications
You must be signed in to change notification settings - Fork 706
/
KSObjCApple.h
1005 lines (857 loc) · 34.5 KB
/
KSObjCApple.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
//
// KSObjCApple.h
//
// Created by Karl Stenerud on 2012-08-30.
//
// Copyright (c) 2011 Apple Inc. All rights reserved.
//
// This file contains Original Code and/or Modifications of Original Code
// as defined in and that are subject to the Apple Public Source License
// Version 2.0 (the 'License'). You may not use this file except in
// compliance with the License. Please obtain a copy of the License at
// http://www.opensource.apple.com/apsl/ and read it before using this
// file.
//
// This file contains structures and constants copied from Apple header
// files, arranged for use in KSObjC.
#ifndef HDR_KSObjCApple_h
#define HDR_KSObjCApple_h
#include <objc/objc.h>
#include <CoreFoundation/CoreFoundation.h>
#ifdef __cplusplus
extern "C" {
#endif
#define MAKE_LIST_T(TYPE) \
typedef struct TYPE##_list_t { \
uint32_t entsizeAndFlags; \
uint32_t count; \
TYPE##_t first; \
} TYPE##_list_t; \
typedef TYPE##_list_t TYPE##_array_t
#define OBJC_OBJECT(NAME) \
NAME { \
Class isa OBJC_ISA_AVAILABILITY;
// ======================================================================
#pragma mark - objc4-680/runtime/objc-msg-x86_64.s -
// and objc4-680/runtime/objc-msg-arm64.s
// ======================================================================
// Use ISA_MASK_OLD before iOS 9, in and after iOS 9, use ISA_MASK
#if __x86_64__
# define ISA_TAG_MASK 1UL
# define ISA_MASK 0x00007ffffffffff8UL
#elif defined(__arm64__)
# define ISA_TAG_MASK 1UL
# define ISA_MASK_OLD 0x00000001fffffff8UL
# define ISA_MASK 0x0000000ffffffff8UL
#else
# define ISA_TAG_MASK 0UL
# define ISA_MASK ~1UL
#endif
// ======================================================================
#pragma mark - objc4-912.3/runtime/objc-config.h -
// ======================================================================
#if __ARM_ARCH_7K__ >= 2 || (__arm64__ && !__LP64__)
# define SUPPORT_INDEXED_ISA 1
#else
# define SUPPORT_INDEXED_ISA 0
#endif
// ======================================================================
#pragma mark - objc4-912.3/runtime/objc-internal.h -
// With removed nullability to suppress warning
// ======================================================================
#if __LP64__
#define OBJC_HAVE_TAGGED_POINTERS 1
#endif
// Tagged pointer layout and usage is subject to change on different OS versions.
// Tag indexes 0..<7 have a 60-bit payload.
// Tag index 7 is reserved.
// Tag indexes 8..<264 have a 52-bit payload.
// Tag index 264 is reserved.
#if __has_feature(objc_fixed_enum) || __cplusplus >= 201103L
enum objc_tag_index_t : uint16_t
#else
typedef uint16_t objc_tag_index_t;
enum
#endif
{
// 60-bit payloads
OBJC_TAG_NSAtom = 0,
OBJC_TAG_1 = 1,
OBJC_TAG_NSString = 2,
OBJC_TAG_NSNumber = 3,
OBJC_TAG_NSIndexPath = 4,
OBJC_TAG_NSManagedObjectID = 5,
OBJC_TAG_NSDate = 6,
// 60-bit reserved
OBJC_TAG_RESERVED_7 = 7,
// 52-bit payloads
OBJC_TAG_Photos_1 = 8,
OBJC_TAG_Photos_2 = 9,
OBJC_TAG_Photos_3 = 10,
OBJC_TAG_Photos_4 = 11,
OBJC_TAG_XPC_1 = 12,
OBJC_TAG_XPC_2 = 13,
OBJC_TAG_XPC_3 = 14,
OBJC_TAG_XPC_4 = 15,
OBJC_TAG_NSColor = 16,
OBJC_TAG_UIColor = 17,
OBJC_TAG_CGColor = 18,
OBJC_TAG_NSIndexSet = 19,
OBJC_TAG_NSMethodSignature = 20,
OBJC_TAG_UTTypeRecord = 21,
OBJC_TAG_Foundation_1 = 22,
OBJC_TAG_Foundation_2 = 23,
OBJC_TAG_Foundation_3 = 24,
OBJC_TAG_Foundation_4 = 25,
OBJC_TAG_CGRegion = 26,
// When using the split tagged pointer representation
// (OBJC_SPLIT_TAGGED_POINTERS), this is the first tag where
// the tag and payload are unobfuscated. All tags from here to
// OBJC_TAG_Last52BitPayload are unobfuscated. The shared cache
// builder is able to construct these as long as the low bit is
// not set (i.e. even-numbered tags).
OBJC_TAG_FirstUnobfuscatedSplitTag = 136, // 128 + 8, first ext tag with high bit set
OBJC_TAG_Constant_CFString = 136,
OBJC_TAG_First60BitPayload = 0,
OBJC_TAG_Last60BitPayload = 6,
OBJC_TAG_First52BitPayload = 8,
OBJC_TAG_Last52BitPayload = 263,
OBJC_TAG_RESERVED_264 = 264
};
#if __has_feature(objc_fixed_enum) && !defined(__cplusplus)
typedef enum objc_tag_index_t objc_tag_index_t;
#endif
#if OBJC_HAVE_TAGGED_POINTERS // (KSCrash) This line is moved here to make `objc_tag_index_t` enum visible for i386.
// Returns true if tagged pointers are enabled.
// The other functions below must not be called if tagged pointers are disabled.
static inline bool
_objc_taggedPointersEnabled(void);
// Create a tagged pointer object with the given tag and payload.
// Assumes the tag is valid.
// Assumes tagged pointers are enabled.
// The payload will be silently truncated to fit.
static inline void *
_objc_makeTaggedPointer(objc_tag_index_t tag, uintptr_t payload);
// Return true if ptr is a tagged pointer object.
// Does not check the validity of ptr's class.
static inline bool
_objc_isTaggedPointer(const void *ptr);
// Extract the tag value from the given tagged pointer object.
// Assumes ptr is a valid tagged pointer object.
// Does not check the validity of ptr's tag.
static inline objc_tag_index_t
_objc_getTaggedPointerTag(const void *ptr);
// Extract the payload from the given tagged pointer object.
// Assumes ptr is a valid tagged pointer object.
// The payload value is zero-extended.
static inline uintptr_t
_objc_getTaggedPointerValue(const void *ptr);
// Extract the payload from the given tagged pointer object.
// Assumes ptr is a valid tagged pointer object.
// The payload value is sign-extended.
static inline intptr_t
_objc_getTaggedPointerSignedValue(const void *ptr);
// Don't use the values below. Use the declarations above.
#if __arm64__
// ARM64 uses a new tagged pointer scheme where normal tags are in
// the low bits, extended tags are in the high bits, and half of the
// extended tag space is reserved for unobfuscated payloads.
# define OBJC_SPLIT_TAGGED_POINTERS 1
#else
# define OBJC_SPLIT_TAGGED_POINTERS 0
#endif
#if (TARGET_OS_OSX || TARGET_OS_MACCATALYST) && __x86_64__
// 64-bit Mac - tag bit is LSB
# define OBJC_MSB_TAGGED_POINTERS 0
#else
// Everything else - tag bit is MSB
# define OBJC_MSB_TAGGED_POINTERS 1
#endif
#define _OBJC_TAG_INDEX_MASK 0x7UL
#if OBJC_SPLIT_TAGGED_POINTERS
#define _OBJC_TAG_SLOT_COUNT 8
#define _OBJC_TAG_SLOT_MASK 0x7UL
#else
// array slot includes the tag bit itself
#define _OBJC_TAG_SLOT_COUNT 16
#define _OBJC_TAG_SLOT_MASK 0xfUL
#endif
#define _OBJC_TAG_EXT_INDEX_MASK 0xff
// array slot has no extra bits
#define _OBJC_TAG_EXT_SLOT_COUNT 256
#define _OBJC_TAG_EXT_SLOT_MASK 0xff
#if OBJC_SPLIT_TAGGED_POINTERS
# define _OBJC_TAG_MASK (1UL<<63)
# define _OBJC_TAG_INDEX_SHIFT 0
# define _OBJC_TAG_SLOT_SHIFT 0
# define _OBJC_TAG_PAYLOAD_LSHIFT 1
# define _OBJC_TAG_PAYLOAD_RSHIFT 4
# define _OBJC_TAG_EXT_MASK (_OBJC_TAG_MASK | 0x7UL)
# define _OBJC_TAG_NO_OBFUSCATION_MASK ((1UL<<62) | _OBJC_TAG_EXT_MASK)
# define _OBJC_TAG_CONSTANT_POINTER_MASK \
~(_OBJC_TAG_EXT_MASK | ((uintptr_t)_OBJC_TAG_EXT_SLOT_MASK << _OBJC_TAG_EXT_SLOT_SHIFT))
# define _OBJC_TAG_EXT_INDEX_SHIFT 55
# define _OBJC_TAG_EXT_SLOT_SHIFT 55
# define _OBJC_TAG_EXT_PAYLOAD_LSHIFT 9
# define _OBJC_TAG_EXT_PAYLOAD_RSHIFT 12
#elif OBJC_MSB_TAGGED_POINTERS
# define _OBJC_TAG_MASK (1UL<<63)
# define _OBJC_TAG_INDEX_SHIFT 60
# define _OBJC_TAG_SLOT_SHIFT 60
# define _OBJC_TAG_PAYLOAD_LSHIFT 4
# define _OBJC_TAG_PAYLOAD_RSHIFT 4
# define _OBJC_TAG_EXT_MASK (0xfUL<<60)
# define _OBJC_TAG_EXT_INDEX_SHIFT 52
# define _OBJC_TAG_EXT_SLOT_SHIFT 52
# define _OBJC_TAG_EXT_PAYLOAD_LSHIFT 12
# define _OBJC_TAG_EXT_PAYLOAD_RSHIFT 12
#else
# define _OBJC_TAG_MASK 1UL
# define _OBJC_TAG_INDEX_SHIFT 1
# define _OBJC_TAG_SLOT_SHIFT 0
# define _OBJC_TAG_PAYLOAD_LSHIFT 0
# define _OBJC_TAG_PAYLOAD_RSHIFT 4
# define _OBJC_TAG_EXT_MASK 0xfUL
# define _OBJC_TAG_EXT_INDEX_SHIFT 4
# define _OBJC_TAG_EXT_SLOT_SHIFT 4
# define _OBJC_TAG_EXT_PAYLOAD_LSHIFT 0
# define _OBJC_TAG_EXT_PAYLOAD_RSHIFT 12
#endif
// Map of tags to obfuscated tags.
extern uintptr_t objc_debug_taggedpointer_obfuscator;
#if OBJC_SPLIT_TAGGED_POINTERS
extern uint8_t objc_debug_tag60_permutations[8];
static inline uintptr_t _objc_basicTagToObfuscatedTag(uintptr_t tag) {
return objc_debug_tag60_permutations[tag];
}
static inline uintptr_t _objc_obfuscatedTagToBasicTag(uintptr_t tag) {
for (unsigned i = 0; i < 7; i++)
if (objc_debug_tag60_permutations[i] == tag)
return i;
return 7;
}
#endif
static inline void *
_objc_encodeTaggedPointer_withObfuscator(uintptr_t ptr, uintptr_t obfuscator)
{
uintptr_t value = (obfuscator ^ ptr);
#if OBJC_SPLIT_TAGGED_POINTERS
if ((value & _OBJC_TAG_NO_OBFUSCATION_MASK) == _OBJC_TAG_NO_OBFUSCATION_MASK)
return (void *)ptr;
uintptr_t basicTag = (value >> _OBJC_TAG_INDEX_SHIFT) & _OBJC_TAG_INDEX_MASK;
uintptr_t permutedTag = _objc_basicTagToObfuscatedTag(basicTag);
value &= ~(_OBJC_TAG_INDEX_MASK << _OBJC_TAG_INDEX_SHIFT);
value |= permutedTag << _OBJC_TAG_INDEX_SHIFT;
#endif
return (void *)value;
}
static inline uintptr_t
_objc_decodeTaggedPointer_noPermute_withObfuscator(const void *ptr,
uintptr_t obfuscator)
{
uintptr_t value = (uintptr_t)ptr;
#if OBJC_SPLIT_TAGGED_POINTERS
if ((value & _OBJC_TAG_NO_OBFUSCATION_MASK) == _OBJC_TAG_NO_OBFUSCATION_MASK)
return value;
#endif
return value ^ obfuscator;
}
static inline uintptr_t
_objc_decodeTaggedPointer_withObfuscator(const void *ptr,
uintptr_t obfuscator)
{
uintptr_t value
= _objc_decodeTaggedPointer_noPermute_withObfuscator(ptr, obfuscator);
#if OBJC_SPLIT_TAGGED_POINTERS
uintptr_t basicTag = (value >> _OBJC_TAG_INDEX_SHIFT) & _OBJC_TAG_INDEX_MASK;
value &= ~(_OBJC_TAG_INDEX_MASK << _OBJC_TAG_INDEX_SHIFT);
value |= _objc_obfuscatedTagToBasicTag(basicTag) << _OBJC_TAG_INDEX_SHIFT;
#endif
return value;
}
static inline void *
_objc_encodeTaggedPointer(uintptr_t ptr)
{
return _objc_encodeTaggedPointer_withObfuscator(ptr, objc_debug_taggedpointer_obfuscator);
}
static inline uintptr_t
_objc_decodeTaggedPointer_noPermute(const void *ptr)
{
return _objc_decodeTaggedPointer_noPermute_withObfuscator(ptr, objc_debug_taggedpointer_obfuscator);
}
static inline uintptr_t
_objc_decodeTaggedPointer(const void *ptr)
{
return _objc_decodeTaggedPointer_withObfuscator(ptr, objc_debug_taggedpointer_obfuscator);
}
static inline bool
_objc_taggedPointersEnabled(void)
{
extern uintptr_t objc_debug_taggedpointer_mask;
return (objc_debug_taggedpointer_mask != 0);
}
__attribute__((no_sanitize("unsigned-shift-base")))
static inline void *
_objc_makeTaggedPointer_withObfuscator(objc_tag_index_t tag, uintptr_t value,
uintptr_t obfuscator)
{
// PAYLOAD_LSHIFT and PAYLOAD_RSHIFT are the payload extraction shifts.
// They are reversed here for payload insertion.
// ASSERT(_objc_taggedPointersEnabled());
if (tag <= OBJC_TAG_Last60BitPayload) {
// ASSERT(((value << _OBJC_TAG_PAYLOAD_RSHIFT) >> _OBJC_TAG_PAYLOAD_LSHIFT) == value);
uintptr_t result =
(_OBJC_TAG_MASK |
((uintptr_t)tag << _OBJC_TAG_INDEX_SHIFT) |
((value << _OBJC_TAG_PAYLOAD_RSHIFT) >> _OBJC_TAG_PAYLOAD_LSHIFT));
return _objc_encodeTaggedPointer_withObfuscator(result, obfuscator);
} else {
// ASSERT(tag >= OBJC_TAG_First52BitPayload);
// ASSERT(tag <= OBJC_TAG_Last52BitPayload);
// ASSERT(((value << _OBJC_TAG_EXT_PAYLOAD_RSHIFT) >> _OBJC_TAG_EXT_PAYLOAD_LSHIFT) == value);
uintptr_t result =
(_OBJC_TAG_EXT_MASK |
((uintptr_t)(tag - OBJC_TAG_First52BitPayload) << _OBJC_TAG_EXT_INDEX_SHIFT) |
((value << _OBJC_TAG_EXT_PAYLOAD_RSHIFT) >> _OBJC_TAG_EXT_PAYLOAD_LSHIFT));
return _objc_encodeTaggedPointer_withObfuscator(result, obfuscator);
}
}
static inline void *
_objc_makeTaggedPointer(objc_tag_index_t tag, uintptr_t value)
{
return _objc_makeTaggedPointer_withObfuscator(tag, value, objc_debug_taggedpointer_obfuscator);
}
static inline bool
_objc_isTaggedPointer(const void *ptr)
{
return ((uintptr_t)ptr & _OBJC_TAG_MASK) == _OBJC_TAG_MASK;
}
static inline bool
_objc_isTaggedPointerOrNil(const void *ptr)
{
// this function is here so that clang can turn this into
// a comparison with NULL when this is appropriate
// it turns out it's not able to in many cases without this
return !ptr || ((uintptr_t)ptr & _OBJC_TAG_MASK) == _OBJC_TAG_MASK;
}
static inline objc_tag_index_t
_objc_getTaggedPointerTag_withObfuscator(const void *ptr,
uintptr_t obfuscator)
{
// ASSERT(_objc_isTaggedPointer(ptr));
uintptr_t value = _objc_decodeTaggedPointer_withObfuscator(ptr, obfuscator);
uintptr_t basicTag = (value >> _OBJC_TAG_INDEX_SHIFT) & _OBJC_TAG_INDEX_MASK;
uintptr_t extTag = (value >> _OBJC_TAG_EXT_INDEX_SHIFT) & _OBJC_TAG_EXT_INDEX_MASK;
if (basicTag == _OBJC_TAG_INDEX_MASK) {
return (objc_tag_index_t)(extTag + OBJC_TAG_First52BitPayload);
} else {
return (objc_tag_index_t)basicTag;
}
}
__attribute__((no_sanitize("unsigned-shift-base")))
static inline uintptr_t
_objc_getTaggedPointerValue_withObfuscator(const void *ptr,
uintptr_t obfuscator)
{
// ASSERT(_objc_isTaggedPointer(ptr));
uintptr_t value = _objc_decodeTaggedPointer_noPermute_withObfuscator(ptr, obfuscator);
uintptr_t basicTag = (value >> _OBJC_TAG_INDEX_SHIFT) & _OBJC_TAG_INDEX_MASK;
if (basicTag == _OBJC_TAG_INDEX_MASK) {
return (value << _OBJC_TAG_EXT_PAYLOAD_LSHIFT) >> _OBJC_TAG_EXT_PAYLOAD_RSHIFT;
} else {
return (value << _OBJC_TAG_PAYLOAD_LSHIFT) >> _OBJC_TAG_PAYLOAD_RSHIFT;
}
}
__attribute__((no_sanitize("unsigned-shift-base")))
static inline intptr_t
_objc_getTaggedPointerSignedValue_withObfuscator(const void *ptr,
uintptr_t obfuscator)
{
// ASSERT(_objc_isTaggedPointer(ptr));
uintptr_t value = _objc_decodeTaggedPointer_noPermute_withObfuscator(ptr, obfuscator);
uintptr_t basicTag = (value >> _OBJC_TAG_INDEX_SHIFT) & _OBJC_TAG_INDEX_MASK;
if (basicTag == _OBJC_TAG_INDEX_MASK) {
return ((intptr_t)value << _OBJC_TAG_EXT_PAYLOAD_LSHIFT) >> _OBJC_TAG_EXT_PAYLOAD_RSHIFT;
} else {
return ((intptr_t)value << _OBJC_TAG_PAYLOAD_LSHIFT) >> _OBJC_TAG_PAYLOAD_RSHIFT;
}
}
static inline objc_tag_index_t
_objc_getTaggedPointerTag(const void *ptr)
{
return _objc_getTaggedPointerTag_withObfuscator(ptr, objc_debug_taggedpointer_obfuscator);
}
static inline uintptr_t
_objc_getTaggedPointerValue(const void *ptr)
{
return _objc_getTaggedPointerValue_withObfuscator(ptr, objc_debug_taggedpointer_obfuscator);
}
static inline intptr_t
_objc_getTaggedPointerSignedValue(const void *ptr)
{
return _objc_getTaggedPointerSignedValue_withObfuscator(ptr, objc_debug_taggedpointer_obfuscator);
}
# if OBJC_SPLIT_TAGGED_POINTERS
static inline void *
_objc_getTaggedPointerRawPointerValue(const void *ptr) {
return (void *)((uintptr_t)ptr & _OBJC_TAG_CONSTANT_POINTER_MASK);
}
# endif
#else
// Just check for nil when we don't support tagged pointers.
static inline bool
_objc_isTaggedPointerOrNil(const void *ptr)
{
return !ptr;
}
// OBJC_HAVE_TAGGED_POINTERS
#endif
// ======================================================================
#pragma mark - objc4-680/runtime/objc-os.h -
// ======================================================================
#ifdef __LP64__
# define WORD_SHIFT 3UL
# define WORD_MASK 7UL
# define WORD_BITS 64
# define FAST_DATA_MASK 0x00007ffffffffff8UL
#else
# define WORD_SHIFT 2UL
# define WORD_MASK 3UL
# define WORD_BITS 32
# define FAST_DATA_MASK 0xfffffffcUL
#endif
// ======================================================================
#pragma mark - objc4-680/runtime/runtime.h -
// ======================================================================
typedef struct objc_cache *Cache;
// ======================================================================
#pragma mark - objc4-680/runtime/objc-runtime-new.h -
// ======================================================================
typedef struct method_t {
SEL name;
const char *types;
IMP imp;
} method_t;
MAKE_LIST_T(method);
typedef struct ivar_t {
#if __x86_64__
// *offset was originally 64-bit on some x86_64 platforms.
// We read and write only 32 bits of it.
// Some metadata provides all 64 bits. This is harmless for unsigned
// little-endian values.
// Some code uses all 64 bits. class_addIvar() over-allocates the
// offset for their benefit.
#endif
int32_t *offset;
const char *name;
const char *type;
// alignment is sometimes -1; use alignment() instead
uint32_t alignment_raw;
uint32_t size;
} ivar_t;
MAKE_LIST_T(ivar);
typedef struct property_t {
const char *name;
const char *attributes;
} property_t;
MAKE_LIST_T(property);
typedef struct OBJC_OBJECT(protocol_t)
const char *mangledName;
struct protocol_list_t *protocols;
method_list_t *instanceMethods;
method_list_t *classMethods;
method_list_t *optionalInstanceMethods;
method_list_t *optionalClassMethods;
property_list_t *instanceProperties;
uint32_t size; // sizeof(protocol_t)
uint32_t flags;
// Fields below this point are not always present on disk.
const char **extendedMethodTypes;
const char *_demangledName;
} protocol_t;
MAKE_LIST_T(protocol);
// Values for class_ro_t->flags
// These are emitted by the compiler and are part of the ABI.
// class is a metaclass
#define RO_META (1<<0)
// class is a root class
#define RO_ROOT (1<<1)
typedef struct class_ro_t {
uint32_t flags;
uint32_t instanceStart;
uint32_t instanceSize;
#ifdef __LP64__
uint32_t reserved;
#endif
const uint8_t * ivarLayout;
const char * name;
method_list_t * baseMethodList;
protocol_list_t * baseProtocols;
const ivar_list_t * ivars;
const uint8_t * weakIvarLayout;
property_list_t *baseProperties;
} class_ro_t;
struct class_rw_ext_t {
const class_ro_t *ro;
method_array_t methods;
property_array_t properties;
protocol_array_t protocols;
char *demangledName;
uint32_t version;
};
typedef struct class_rw_t {
uint32_t flags;
uint16_t witness;
#if SUPPORT_INDEXED_ISA
uint16_t index;
#endif
uintptr_t ro_or_rw_ext;
Class firstSubclass;
Class nextSiblingClass;
} class_rw_t;
typedef struct class_t {
struct class_t *isa;
struct class_t *superclass;
#pragma clang diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
Cache cache;
#pragma clang diagnostic pop
IMP *vtable;
uintptr_t data_NEVER_USE; // class_rw_t * plus custom rr/alloc flags
} class_t;
// ======================================================================
#pragma mark - CF-1153.18/CFRuntime.h -
// ======================================================================
typedef struct __CFRuntimeBase {
uintptr_t _cfisa;
uint8_t _cfinfo[4];
#if __LP64__
uint32_t _rc;
#endif
} CFRuntimeBase;
// ======================================================================
#pragma mark - CF-1153.18/CFInternal.h -
// ======================================================================
#if defined(__BIG_ENDIAN__)
#define __CF_BIG_ENDIAN__ 1
#define __CF_LITTLE_ENDIAN__ 0
#endif
#if defined(__LITTLE_ENDIAN__)
#define __CF_LITTLE_ENDIAN__ 1
#define __CF_BIG_ENDIAN__ 0
#endif
#define CF_INFO_BITS (!!(__CF_BIG_ENDIAN__) * 3)
#define CF_RC_BITS (!!(__CF_LITTLE_ENDIAN__) * 3)
/* Bit manipulation macros */
/* Bits are numbered from 31 on left to 0 on right */
/* May or may not work if you use them on bitfields in types other than UInt32, bitfields the full width of a UInt32, or anything else for which they were not designed. */
/* In the following, N1 and N2 specify an inclusive range N2..N1 with N1 >= N2 */
#define __CFBitfieldMask(N1, N2) ((((UInt32)~0UL) << (31UL - (N1) + (N2))) >> (31UL - N1))
#define __CFBitfieldGetValue(V, N1, N2) (((V) & __CFBitfieldMask(N1, N2)) >> (N2))
// ======================================================================
#pragma mark - CF-1153.18/CFString.c -
// ======================================================================
// This is separate for C++
struct __notInlineMutable {
void *buffer;
CFIndex length;
CFIndex capacity; // Capacity in bytes
unsigned int hasGap:1; // Currently unused
unsigned int isFixedCapacity:1;
unsigned int isExternalMutable:1;
unsigned int capacityProvidedExternally:1;
#if __LP64__
unsigned long desiredCapacity:60;
#else
unsigned long desiredCapacity:28;
#endif
CFAllocatorRef contentsAllocator; // Optional
}; // The only mutable variant for CFString
/* !!! Never do sizeof(CFString); the union is here just to make it easier to access some fields.
*/
struct __CFString {
CFRuntimeBase base;
union { // In many cases the allocated structs are smaller than these
struct __inline1 {
CFIndex length;
} inline1; // Bytes follow the length
struct __notInlineImmutable1 {
void *buffer; // Note that the buffer is in the same place for all non-inline variants of CFString
CFIndex length;
CFAllocatorRef contentsDeallocator; // Optional; just the dealloc func is used
} notInlineImmutable1; // This is the usual not-inline immutable CFString
struct __notInlineImmutable2 {
void *buffer;
CFAllocatorRef contentsDeallocator; // Optional; just the dealloc func is used
} notInlineImmutable2; // This is the not-inline immutable CFString when length is stored with the contents (first byte)
struct __notInlineMutable notInlineMutable;
} variants;
};
/*
I = is immutable
E = not inline contents
U = is Unicode
N = has NULL byte
L = has length byte
D = explicit deallocator for contents (for mutable objects, allocator)
C = length field is CFIndex (rather than UInt32); only meaningful for 64-bit, really
if needed this bit (valuable real-estate) can be given up for another bit elsewhere, since this info is needed just for 64-bit
Also need (only for mutable)
F = is fixed
G = has gap
Cap, DesCap = capacity
B7 B6 B5 B4 B3 B2 B1 B0
U N L C I
B6 B5
0 0 inline contents
0 1 E (freed with default allocator)
1 0 E (not freed)
1 1 E D
!!! Note: Constant CFStrings use the bit patterns:
C8 (11001000 = default allocator, not inline, not freed contents; 8-bit; has NULL byte; doesn't have length; is immutable)
D0 (11010000 = default allocator, not inline, not freed contents; Unicode; is immutable)
The bit usages should not be modified in a way that would effect these bit patterns.
*/
enum {
__kCFFreeContentsWhenDoneMask = 0x020,
__kCFFreeContentsWhenDone = 0x020,
__kCFContentsMask = 0x060,
__kCFHasInlineContents = 0x000,
__kCFNotInlineContentsNoFree = 0x040, // Don't free
__kCFNotInlineContentsDefaultFree = 0x020, // Use allocator's free function
__kCFNotInlineContentsCustomFree = 0x060, // Use a specially provided free function
__kCFHasContentsAllocatorMask = 0x060,
__kCFHasContentsAllocator = 0x060, // (For mutable strings) use a specially provided allocator
__kCFHasContentsDeallocatorMask = 0x060,
__kCFHasContentsDeallocator = 0x060,
__kCFIsMutableMask = 0x01,
__kCFIsMutable = 0x01,
__kCFIsUnicodeMask = 0x10,
__kCFIsUnicode = 0x10,
__kCFHasNullByteMask = 0x08,
__kCFHasNullByte = 0x08,
__kCFHasLengthByteMask = 0x04,
__kCFHasLengthByte = 0x04,
// !!! Bit 0x02 has been freed up
};
// !!! Assumptions:
// Mutable strings are not inline
// Compile-time constant strings are not inline
// Mutable strings always have explicit length (but they might also have length byte and null byte)
// If there is an explicit length, always use that instead of the length byte (length byte is useful for quickly returning pascal strings)
// Never look at the length byte for the length; use __CFStrLength or __CFStrLength2
/* The following set of functions and macros need to be updated on change to the bit configuration
*/
CF_INLINE Boolean __CFStrIsMutable(CFStringRef str) {return (str->base._cfinfo[CF_INFO_BITS] & __kCFIsMutableMask) == __kCFIsMutable;}
CF_INLINE Boolean __CFStrIsInline(CFStringRef str) {return (str->base._cfinfo[CF_INFO_BITS] & __kCFContentsMask) == __kCFHasInlineContents;}
CF_INLINE Boolean __CFStrFreeContentsWhenDone(CFStringRef str) {return (str->base._cfinfo[CF_INFO_BITS] & __kCFFreeContentsWhenDoneMask) == __kCFFreeContentsWhenDone;}
CF_INLINE Boolean __CFStrHasContentsDeallocator(CFStringRef str) {return (str->base._cfinfo[CF_INFO_BITS] & __kCFHasContentsDeallocatorMask) == __kCFHasContentsDeallocator;}
CF_INLINE Boolean __CFStrIsUnicode(CFStringRef str) {return (str->base._cfinfo[CF_INFO_BITS] & __kCFIsUnicodeMask) == __kCFIsUnicode;}
CF_INLINE Boolean __CFStrIsEightBit(CFStringRef str) {return (str->base._cfinfo[CF_INFO_BITS] & __kCFIsUnicodeMask) != __kCFIsUnicode;}
CF_INLINE Boolean __CFStrHasNullByte(CFStringRef str) {return (str->base._cfinfo[CF_INFO_BITS] & __kCFHasNullByteMask) == __kCFHasNullByte;}
CF_INLINE Boolean __CFStrHasLengthByte(CFStringRef str) {return (str->base._cfinfo[CF_INFO_BITS] & __kCFHasLengthByteMask) == __kCFHasLengthByte;}
CF_INLINE Boolean __CFStrHasExplicitLength(CFStringRef str) {return (str->base._cfinfo[CF_INFO_BITS] & (__kCFIsMutableMask | __kCFHasLengthByteMask)) != __kCFHasLengthByte;} // Has explicit length if (1) mutable or (2) not mutable and no length byte
CF_INLINE Boolean __CFStrIsConstant(CFStringRef str) {
#if __LP64__
return str->base._rc == 0;
#else
return (str->base._cfinfo[CF_RC_BITS]) == 0;
#endif
}
/* Returns ptr to the buffer (which might include the length byte).
*/
CF_INLINE const void *__CFStrContents(CFStringRef str) {
if (__CFStrIsInline(str)) {
return (const void *)(((uintptr_t)&(str->variants)) + (__CFStrHasExplicitLength(str) ? sizeof(CFIndex) : 0));
} else { // Not inline; pointer is always word 2
return str->variants.notInlineImmutable1.buffer;
}
}
// ======================================================================
#pragma mark - CF-1153.18/CFURL.c -
// ======================================================================
struct __CFURL {
CFRuntimeBase _cfBase;
UInt32 _flags;
CFStringEncoding _encoding; // The encoding to use when asked to remove percent escapes
CFStringRef _string; // Never NULL
CFURLRef _base;
struct _CFURLAdditionalData* _extra;
void *_resourceInfo; // For use by CoreServicesInternal to cache property values. Retained and released by CFURL.
CFRange _ranges[1]; // variable length (1 to 9) array of ranges
};
// ======================================================================
#pragma mark - CF-1153.18/CFDate.c -
// ======================================================================
struct __CFDate {
// According to CFDate.c the structure is a CFRuntimeBase followed
// by the time. In fact, it's only an isa pointer followed by the time.
//struct CFRuntimeBase _base;
uintptr_t _cfisa;
CFAbsoluteTime _time; /* immutable */
};
// ======================================================================
#pragma mark - CF-1153.18/CFNumber.c -
// ======================================================================
struct __CFNumber {
CFRuntimeBase _base;
uint64_t _pad; // need this space here for the constant objects
/* 0 or 8 more bytes allocated here */
};
// ======================================================================
#pragma mark - CF-1153.18/CFArray.c -
// ======================================================================
struct __CFArrayBucket {
const void *_item;
};
struct __CFArrayDeque {
uintptr_t _leftIdx;
uintptr_t _capacity;
/* struct __CFArrayBucket buckets follow here */
};
struct __CFArray {
CFRuntimeBase _base;
CFIndex _count; /* number of objects */
CFIndex _mutations;
int32_t _mutInProgress;
/* __strong */ void *_store; /* can be NULL when MutableDeque */
};
/* Flag bits */
enum { /* Bits 0-1 */
__kCFArrayImmutable = 0,
__kCFArrayDeque = 2,
};
enum { /* Bits 2-3 */
__kCFArrayHasNullCallBacks = 0,
__kCFArrayHasCFTypeCallBacks = 1,
__kCFArrayHasCustomCallBacks = 3 /* callbacks are at end of header */
};
CF_INLINE CFIndex __CFArrayGetType(CFArrayRef array) {
return __CFBitfieldGetValue(((const CFRuntimeBase *)array)->_cfinfo[CF_INFO_BITS], 1, 0);
}
CF_INLINE CFIndex __CFArrayGetSizeOfType(CFIndex t) {
CFIndex size = 0;
size += sizeof(struct __CFArray);
if (__CFBitfieldGetValue((unsigned long)t, 3, 2) == __kCFArrayHasCustomCallBacks) {
size += sizeof(CFArrayCallBacks);
}
return size;
}
/* Only applies to immutable and mutable-deque-using arrays;
* Returns the bucket holding the left-most real value in the latter case. */
CF_INLINE struct __CFArrayBucket *__CFArrayGetBucketsPtr(CFArrayRef array) {
switch (__CFArrayGetType(array)) {
case __kCFArrayImmutable:
return (struct __CFArrayBucket *)((uint8_t *)array + __CFArrayGetSizeOfType(((CFRuntimeBase *)array)->_cfinfo[CF_INFO_BITS]));
case __kCFArrayDeque: {
struct __CFArrayDeque *deque = (struct __CFArrayDeque *)array->_store;
return (struct __CFArrayBucket *)((uint8_t *)deque + sizeof(struct __CFArrayDeque) + deque->_leftIdx * sizeof(struct __CFArrayBucket));
}
}
return NULL;
}
// ======================================================================
#pragma mark - CF-1153.18/CFBasicHash.h -
// ======================================================================
typedef struct __CFBasicHash *CFBasicHashRef;
typedef const struct __CFBasicHash *CFConstBasicHashRef;
typedef struct __CFBasicHashCallbacks CFBasicHashCallbacks;
struct __CFBasicHashCallbacks {
uintptr_t (*retainValue)(CFAllocatorRef alloc, uintptr_t stack_value); // Return 2nd arg or new value
uintptr_t (*retainKey)(CFAllocatorRef alloc, uintptr_t stack_key); // Return 2nd arg or new key
void (*releaseValue)(CFAllocatorRef alloc, uintptr_t stack_value);
void (*releaseKey)(CFAllocatorRef alloc, uintptr_t stack_key);
Boolean (*equateValues)(uintptr_t coll_value1, uintptr_t stack_value2); // 1st arg is in-collection value, 2nd arg is probe parameter OR in-collection value for a second collection
Boolean (*equateKeys)(uintptr_t coll_key1, uintptr_t stack_key2); // 1st arg is in-collection key, 2nd arg is probe parameter
CFHashCode (*hashKey)(uintptr_t stack_key);
uintptr_t (*getIndirectKey)(uintptr_t coll_value); // Return key; 1st arg is in-collection value
CFStringRef (*copyValueDescription)(uintptr_t stack_value);
CFStringRef (*copyKeyDescription)(uintptr_t stack_key);
};
// ======================================================================
#pragma mark - CF-1153.18/CFBasicHash.c -
// ======================================================================
// Prime numbers. Values above 100 have been adjusted up so that the
// malloced block size will be just below a multiple of 512; values
// above 1200 have been adjusted up to just below a multiple of 4096.
static const uintptr_t __CFBasicHashTableSizes[64] = {
0, 3, 7, 13, 23, 41, 71, 127, 191, 251, 383, 631, 1087, 1723,
2803, 4523, 7351, 11959, 19447, 31231, 50683, 81919, 132607,
214519, 346607, 561109, 907759, 1468927, 2376191, 3845119,
6221311, 10066421, 16287743, 26354171, 42641881, 68996069,
111638519, 180634607, 292272623, 472907251,
#if __LP64__
765180413UL, 1238087663UL, 2003267557UL, 3241355263UL, 5244622819UL,
#if 0
8485977589UL, 13730600407UL, 22216578047UL, 35947178479UL,
58163756537UL, 94110934997UL, 152274691561UL, 246385626107UL,
398660317687UL, 645045943807UL, 1043706260983UL, 1688752204787UL,
2732458465769UL, 4421210670577UL, 7153669136377UL,
11574879807461UL, 18728548943849UL, 30303428750843UL
#endif
#endif
};
typedef union {
uintptr_t neutral;
void* Xstrong; // Changed from type 'id'
void* Xweak; // Changed from type 'id'
} CFBasicHashValue;
struct __CFBasicHash {
CFRuntimeBase base;
struct { // 192 bits
uint16_t mutations;
uint8_t hash_style:2;
uint8_t keys_offset:1;
uint8_t counts_offset:2;
uint8_t counts_width:2;
uint8_t hashes_offset:2;
uint8_t strong_values:1;
uint8_t strong_keys:1;
uint8_t weak_values:1;
uint8_t weak_keys:1;
uint8_t int_values:1;
uint8_t int_keys:1;
uint8_t indirect_keys:1;
uint32_t used_buckets; /* number of used buckets */
uint64_t deleted:16;
uint64_t num_buckets_idx:8; /* index to number of buckets */
uint64_t __kret:10;
uint64_t __vret:10;
uint64_t __krel:10;
uint64_t __vrel:10;
uint64_t __:1;
uint64_t null_rc:1;
uint64_t fast_grow:1;
uint64_t finalized:1;
uint64_t __kdes:10;
uint64_t __vdes:10;
uint64_t __kequ:10;
uint64_t __vequ:10;
uint64_t __khas:10;
uint64_t __kget:10;
} bits;
void *pointers[1];
};
CF_INLINE CFBasicHashValue *__CFBasicHashGetValues(CFConstBasicHashRef ht) {
return (CFBasicHashValue *)ht->pointers[0];
}
CF_INLINE CFBasicHashValue *__CFBasicHashGetKeys(CFConstBasicHashRef ht) {
return (CFBasicHashValue *)ht->pointers[ht->bits.keys_offset];
}
CF_INLINE void *__CFBasicHashGetCounts(CFConstBasicHashRef ht) {
return (void *)ht->pointers[ht->bits.counts_offset];
}
CF_INLINE uintptr_t __CFBasicHashGetSlotCount(CFConstBasicHashRef ht, CFIndex idx) {
void *counts = __CFBasicHashGetCounts(ht);
switch (ht->bits.counts_width) {
case 0: return ((uint8_t *)counts)[idx];
case 1: return ((uint16_t *)counts)[idx];
case 2: return ((uint32_t *)counts)[idx];
case 3: return (uintptr_t)((uint64_t *)counts)[idx];
}
return 0;
}