1 #include <stdint.h>
2 #include <stdbool.h>
3 
4 void preserce_ptr_sz_fn(long x) {}
5 
6 #define __bpf_aligned __attribute__((aligned(8)))
7 
8 /*
9  * KERNEL
10  */
11 
12 struct core_reloc_kernel_output {
13 	int valid[10];
14 	char comm[sizeof("test_progs")];
15 	int comm_len;
16 	bool local_task_struct_matches;
17 };
18 
19 /*
20  * MODULE
21  */
22 
23 struct core_reloc_module_output {
24 	long long len;
25 	long long off;
26 	int read_ctx_sz;
27 	bool read_ctx_exists;
28 	bool buf_exists;
29 	bool len_exists;
30 	bool off_exists;
31 	/* we have test_progs[-flavor], so cut flavor part */
32 	char comm[sizeof("test_progs")];
33 	int comm_len;
34 };
35 
36 /*
37  * FLAVORS
38  */
39 struct core_reloc_flavors {
40 	int a;
41 	int b;
42 	int c;
43 };
44 
45 /* this is not a flavor, as it doesn't have triple underscore */
46 struct core_reloc_flavors__err_wrong_name {
47 	int a;
48 	int b;
49 	int c;
50 };
51 
52 /*
53  * NESTING
54  */
55 /* original set up, used to record relocations in BPF program */
56 struct core_reloc_nesting_substruct {
57 	int a;
58 };
59 
60 union core_reloc_nesting_subunion {
61 	int b;
62 };
63 
64 struct core_reloc_nesting {
65 	union {
66 		struct core_reloc_nesting_substruct a;
67 	} a;
68 	struct {
69 		union core_reloc_nesting_subunion b;
70 	} b;
71 };
72 
73 /* inlined anonymous struct/union instead of named structs in original */
74 struct core_reloc_nesting___anon_embed {
75 	int __just_for_padding;
76 	union {
77 		struct {
78 			int a;
79 		} a;
80 	} a;
81 	struct {
82 		union {
83 			int b;
84 		} b;
85 	} b;
86 };
87 
88 /* different mix of nested structs/unions than in original */
89 struct core_reloc_nesting___struct_union_mixup {
90 	int __a;
91 	struct {
92 		int __a;
93 		union {
94 			char __a;
95 			int a;
96 		} a;
97 	} a;
98 	int __b;
99 	union {
100 		int __b;
101 		union {
102 			char __b;
103 			int b;
104 		} b;
105 	} b;
106 };
107 
108 /* extra anon structs/unions, but still valid a.a.a and b.b.b accessors */
109 struct core_reloc_nesting___extra_nesting {
110 	int __padding;
111 	struct {
112 		struct {
113 			struct {
114 				struct {
115 					union {
116 						int a;
117 					} a;
118 				};
119 			};
120 		} a;
121 		int __some_more;
122 		struct {
123 			union {
124 				union {
125 					union {
126 						struct {
127 							int b;
128 						};
129 					} b;
130 				};
131 			} b;
132 		};
133 	};
134 };
135 
136 /* three flavors of same struct with different structure but same layout for
137  * a.a.a and b.b.b, thus successfully resolved and relocatable */
138 struct core_reloc_nesting___dup_compat_types {
139 	char __just_for_padding;
140 	/* 3 more bytes of padding */
141 	struct {
142 		struct {
143 			int a; /* offset 4 */
144 		} a;
145 	} a;
146 	long long __more_padding;
147 	struct {
148 		struct {
149 			int b; /* offset 16 */
150 		} b;
151 	} b;
152 };
153 
154 struct core_reloc_nesting___dup_compat_types__2 {
155 	int __aligned_padding;
156 	struct {
157 		int __trickier_noop[0];
158 		struct {
159 			char __some_more_noops[0];
160 			int a; /* offset 4 */
161 		} a;
162 	} a;
163 	int __more_padding;
164 	struct {
165 		struct {
166 			struct {
167 				int __critical_padding;
168 				int b; /* offset 16 */
169 			} b;
170 			int __does_not_matter;
171 		};
172 	} b;
173 	int __more_irrelevant_stuff;
174 };
175 
176 struct core_reloc_nesting___dup_compat_types__3 {
177 	char __correct_padding[4];
178 	struct {
179 		struct {
180 			int a; /* offset 4 */
181 		} a;
182 	} a;
183 	/* 8 byte padding due to next struct's alignment */
184 	struct {
185 		struct {
186 			int b;
187 		} b;
188 	} b __attribute__((aligned(16)));
189 };
190 
191 /* b.b.b field is missing */
192 struct core_reloc_nesting___err_missing_field {
193 	struct {
194 		struct {
195 			int a;
196 		} a;
197 	} a;
198 	struct {
199 		struct {
200 			int x;
201 		} b;
202 	} b;
203 };
204 
205 /* b.b.b field is an array of integers instead of plain int */
206 struct core_reloc_nesting___err_array_field {
207 	struct {
208 		struct {
209 			int a;
210 		} a;
211 	} a;
212 	struct {
213 		struct {
214 			int b[1];
215 		} b;
216 	} b;
217 };
218 
219 /* middle b container is missing */
220 struct core_reloc_nesting___err_missing_container {
221 	struct {
222 		struct {
223 			int a;
224 		} a;
225 	} a;
226 	struct {
227 		int x;
228 	} b;
229 };
230 
231 /* middle b container is referenced through pointer instead of being embedded */
232 struct core_reloc_nesting___err_nonstruct_container {
233 	struct {
234 		struct {
235 			int a;
236 		} a;
237 	} a;
238 	struct {
239 		struct {
240 			int b;
241 		} *b;
242 	} b;
243 };
244 
245 /* middle b container is an array of structs instead of plain struct */
246 struct core_reloc_nesting___err_array_container {
247 	struct {
248 		struct {
249 			int a;
250 		} a;
251 	} a;
252 	struct {
253 		struct {
254 			int b;
255 		} b[1];
256 	} b;
257 };
258 
259 /* two flavors of same struct with incompatible layout for b.b.b */
260 struct core_reloc_nesting___err_dup_incompat_types__1 {
261 	struct {
262 		struct {
263 			int a; /* offset 0 */
264 		} a;
265 	} a;
266 	struct {
267 		struct {
268 			int b; /* offset 4 */
269 		} b;
270 	} b;
271 };
272 
273 struct core_reloc_nesting___err_dup_incompat_types__2 {
274 	struct {
275 		struct {
276 			int a; /* offset 0 */
277 		} a;
278 	} a;
279 	int __extra_padding;
280 	struct {
281 		struct {
282 			int b; /* offset 8 (!) */
283 		} b;
284 	} b;
285 };
286 
287 /* two flavors of same struct having one of a.a.a and b.b.b, but not both */
288 struct core_reloc_nesting___err_partial_match_dups__a {
289 	struct {
290 		struct {
291 			int a;
292 		} a;
293 	} a;
294 };
295 
296 struct core_reloc_nesting___err_partial_match_dups__b {
297 	struct {
298 		struct {
299 			int b;
300 		} b;
301 	} b;
302 };
303 
304 struct core_reloc_nesting___err_too_deep {
305 	struct {
306 		struct {
307 			int a;
308 		} a;
309 	} a;
310 	/* 65 levels of nestedness for b.b.b */
311 	struct {
312 		struct {
313 			struct { struct { struct { struct { struct {
314 			struct { struct { struct { struct { struct {
315 			struct { struct { struct { struct { struct {
316 			struct { struct { struct { struct { struct {
317 			struct { struct { struct { struct { struct {
318 			struct { struct { struct { struct { struct {
319 			struct { struct { struct { struct { struct {
320 			struct { struct { struct { struct { struct {
321 			struct { struct { struct { struct { struct {
322 			struct { struct { struct { struct { struct {
323 			struct { struct { struct { struct { struct {
324 			struct { struct { struct { struct { struct {
325 				/* this one is one too much */
326 				struct {
327 					int b;
328 				};
329 			}; }; }; }; };
330 			}; }; }; }; };
331 			}; }; }; }; };
332 			}; }; }; }; };
333 			}; }; }; }; };
334 			}; }; }; }; };
335 			}; }; }; }; };
336 			}; }; }; }; };
337 			}; }; }; }; };
338 			}; }; }; }; };
339 			}; }; }; }; };
340 			}; }; }; }; };
341 		} b;
342 	} b;
343 };
344 
345 /*
346  * ARRAYS
347  */
348 struct core_reloc_arrays_output {
349 	int a2;
350 	char b123;
351 	int c1c;
352 	int d00d;
353 	int f10c;
354 };
355 
356 struct core_reloc_arrays_substruct {
357 	int c;
358 	int d;
359 };
360 
361 struct core_reloc_arrays {
362 	int a[5];
363 	char b[2][3][4];
364 	struct core_reloc_arrays_substruct c[3];
365 	struct core_reloc_arrays_substruct d[1][2];
366 	struct core_reloc_arrays_substruct f[][2];
367 };
368 
369 /* bigger array dimensions */
370 struct core_reloc_arrays___diff_arr_dim {
371 	int a[7];
372 	char b[3][4][5];
373 	struct core_reloc_arrays_substruct c[4];
374 	struct core_reloc_arrays_substruct d[2][3];
375 	struct core_reloc_arrays_substruct f[1][3];
376 };
377 
378 /* different size of array's value (struct) */
379 struct core_reloc_arrays___diff_arr_val_sz {
380 	int a[5];
381 	char b[2][3][4];
382 	struct {
383 		int __padding1;
384 		int c;
385 		int __padding2;
386 	} c[3];
387 	struct {
388 		int __padding1;
389 		int d;
390 		int __padding2;
391 	} d[1][2];
392 	struct {
393 		int __padding1;
394 		int c;
395 		int __padding2;
396 	} f[][2];
397 };
398 
399 struct core_reloc_arrays___equiv_zero_sz_arr {
400 	int a[5];
401 	char b[2][3][4];
402 	struct core_reloc_arrays_substruct c[3];
403 	struct core_reloc_arrays_substruct d[1][2];
404 	/* equivalent to flexible array */
405 	struct core_reloc_arrays_substruct f[][2];
406 };
407 
408 struct core_reloc_arrays___fixed_arr {
409 	int a[5];
410 	char b[2][3][4];
411 	struct core_reloc_arrays_substruct c[3];
412 	struct core_reloc_arrays_substruct d[1][2];
413 	/* not a flexible array anymore, but within access bounds */
414 	struct core_reloc_arrays_substruct f[1][2];
415 };
416 
417 struct core_reloc_arrays___err_too_small {
418 	int a[2]; /* this one is too small */
419 	char b[2][3][4];
420 	struct core_reloc_arrays_substruct c[3];
421 	struct core_reloc_arrays_substruct d[1][2];
422 	struct core_reloc_arrays_substruct f[][2];
423 };
424 
425 struct core_reloc_arrays___err_too_shallow {
426 	int a[5];
427 	char b[2][3]; /* this one lacks one dimension */
428 	struct core_reloc_arrays_substruct c[3];
429 	struct core_reloc_arrays_substruct d[1][2];
430 	struct core_reloc_arrays_substruct f[][2];
431 };
432 
433 struct core_reloc_arrays___err_non_array {
434 	int a; /* not an array */
435 	char b[2][3][4];
436 	struct core_reloc_arrays_substruct c[3];
437 	struct core_reloc_arrays_substruct d[1][2];
438 	struct core_reloc_arrays_substruct f[][2];
439 };
440 
441 struct core_reloc_arrays___err_wrong_val_type {
442 	int a[5];
443 	char b[2][3][4];
444 	int c[3]; /* value is not a struct */
445 	struct core_reloc_arrays_substruct d[1][2];
446 	struct core_reloc_arrays_substruct f[][2];
447 };
448 
449 struct core_reloc_arrays___err_bad_zero_sz_arr {
450 	/* zero-sized array, but not at the end */
451 	struct core_reloc_arrays_substruct f[0][2];
452 	int a[5];
453 	char b[2][3][4];
454 	struct core_reloc_arrays_substruct c[3];
455 	struct core_reloc_arrays_substruct d[1][2];
456 };
457 
458 /*
459  * PRIMITIVES
460  */
461 enum core_reloc_primitives_enum {
462 	A = 0,
463 	B = 1,
464 };
465 
466 struct core_reloc_primitives {
467 	char a;
468 	int b;
469 	enum core_reloc_primitives_enum c;
470 	void *d __bpf_aligned;
471 	int (*f)(const char *) __bpf_aligned;
472 };
473 
474 struct core_reloc_primitives___diff_enum_def {
475 	char a;
476 	int b;
477 	void *d __bpf_aligned;
478 	int (*f)(const char *) __bpf_aligned;
479 	enum {
480 		X = 100,
481 		Y = 200,
482 	} c __bpf_aligned; /* inline enum def with differing set of values */
483 };
484 
485 struct core_reloc_primitives___diff_func_proto {
486 	void (*f)(int) __bpf_aligned; /* incompatible function prototype */
487 	void *d __bpf_aligned;
488 	enum core_reloc_primitives_enum c __bpf_aligned;
489 	int b;
490 	char a;
491 };
492 
493 struct core_reloc_primitives___diff_ptr_type {
494 	const char * const d __bpf_aligned; /* different pointee type + modifiers */
495 	char a __bpf_aligned;
496 	int b;
497 	enum core_reloc_primitives_enum c;
498 	int (*f)(const char *) __bpf_aligned;
499 };
500 
501 struct core_reloc_primitives___err_non_enum {
502 	char a[1];
503 	int b;
504 	int c; /* int instead of enum */
505 	void *d __bpf_aligned;
506 	int (*f)(const char *) __bpf_aligned;
507 };
508 
509 struct core_reloc_primitives___err_non_int {
510 	char a[1];
511 	int *b __bpf_aligned; /* ptr instead of int */
512 	enum core_reloc_primitives_enum c __bpf_aligned;
513 	void *d __bpf_aligned;
514 	int (*f)(const char *) __bpf_aligned;
515 };
516 
517 struct core_reloc_primitives___err_non_ptr {
518 	char a[1];
519 	int b;
520 	enum core_reloc_primitives_enum c;
521 	int d; /* int instead of ptr */
522 	int (*f)(const char *) __bpf_aligned;
523 };
524 
525 /*
526  * MODS
527  */
528 struct core_reloc_mods_output {
529 	int a, b, c, d, e, f, g, h;
530 };
531 
532 typedef const int int_t;
533 typedef const char *char_ptr_t __bpf_aligned;
534 typedef const int arr_t[7];
535 
536 struct core_reloc_mods_substruct {
537 	int x;
538 	int y;
539 };
540 
541 typedef struct {
542 	int x;
543 	int y;
544 } core_reloc_mods_substruct_t;
545 
546 struct core_reloc_mods {
547 	int a;
548 	int_t b;
549 	char *c __bpf_aligned;
550 	char_ptr_t d;
551 	int e[3] __bpf_aligned;
552 	arr_t f;
553 	struct core_reloc_mods_substruct g;
554 	core_reloc_mods_substruct_t h;
555 };
556 
557 /* a/b, c/d, e/f, and g/h pairs are swapped */
558 struct core_reloc_mods___mod_swap {
559 	int b;
560 	int_t a;
561 	char *d __bpf_aligned;
562 	char_ptr_t c;
563 	int f[3] __bpf_aligned;
564 	arr_t e;
565 	struct {
566 		int y;
567 		int x;
568 	} h;
569 	core_reloc_mods_substruct_t g;
570 };
571 
572 typedef int int1_t;
573 typedef int1_t int2_t;
574 typedef int2_t int3_t;
575 
576 typedef int arr1_t[5];
577 typedef arr1_t arr2_t;
578 typedef arr2_t arr3_t;
579 typedef arr3_t arr4_t;
580 
581 typedef const char * const volatile fancy_char_ptr_t __bpf_aligned;
582 
583 typedef core_reloc_mods_substruct_t core_reloc_mods_substruct_tt;
584 
585 /* we need more typedefs */
586 struct core_reloc_mods___typedefs {
587 	core_reloc_mods_substruct_tt g;
588 	core_reloc_mods_substruct_tt h;
589 	arr4_t f;
590 	arr4_t e;
591 	fancy_char_ptr_t d;
592 	fancy_char_ptr_t c;
593 	int3_t b __bpf_aligned;
594 	int3_t a;
595 };
596 
597 /*
598  * PTR_AS_ARR
599  */
600 struct core_reloc_ptr_as_arr {
601 	int a;
602 };
603 
604 struct core_reloc_ptr_as_arr___diff_sz {
605 	int :32; /* padding */
606 	char __some_more_padding;
607 	int a;
608 };
609 
610 /*
611  * INTS
612  */
613 struct core_reloc_ints {
614 	uint8_t		u8_field;
615 	int8_t		s8_field;
616 	uint16_t	u16_field;
617 	int16_t		s16_field;
618 	uint32_t	u32_field;
619 	int32_t		s32_field;
620 	uint64_t	u64_field;
621 	int64_t		s64_field;
622 };
623 
624 /* signed/unsigned types swap */
625 struct core_reloc_ints___reverse_sign {
626 	int8_t		u8_field;
627 	uint8_t		s8_field;
628 	int16_t		u16_field;
629 	uint16_t	s16_field;
630 	int32_t		u32_field;
631 	uint32_t	s32_field;
632 	int64_t		u64_field;
633 	uint64_t	s64_field;
634 };
635 
636 struct core_reloc_ints___bool {
637 	bool		u8_field; /* bool instead of uint8 */
638 	int8_t		s8_field;
639 	uint16_t	u16_field;
640 	int16_t		s16_field;
641 	uint32_t	u32_field;
642 	int32_t		s32_field;
643 	uint64_t	u64_field;
644 	int64_t		s64_field;
645 };
646 
647 /*
648  * MISC
649  */
650 struct core_reloc_misc_output {
651 	int a, b, c;
652 };
653 
654 struct core_reloc_misc___a {
655 	int a1;
656 	int a2;
657 };
658 
659 struct core_reloc_misc___b {
660 	int b1;
661 	int b2;
662 };
663 
664 /* this one extends core_reloc_misc_extensible struct from BPF prog */
665 struct core_reloc_misc_extensible {
666 	int a;
667 	int b;
668 	int c;
669 	int d;
670 };
671 
672 /*
673  * FIELD EXISTENCE
674  */
675 struct core_reloc_existence_output {
676 	int a_exists;
677 	int a_value;
678 	int b_exists;
679 	int b_value;
680 	int c_exists;
681 	int c_value;
682 	int arr_exists;
683 	int arr_value;
684 	int s_exists;
685 	int s_value;
686 };
687 
688 struct core_reloc_existence {
689 	int a;
690 	struct {
691 		int b;
692 	};
693 	int c;
694 	int arr[1];
695 	struct {
696 		int x;
697 	} s;
698 };
699 
700 struct core_reloc_existence___minimal {
701 	int a;
702 };
703 
704 struct core_reloc_existence___wrong_field_defs {
705 	void *a;
706 	int b[1];
707 	struct{ int x; } c;
708 	int arr;
709 	int s;
710 };
711 
712 /*
713  * BITFIELDS
714  */
715 /* bitfield read results, all as plain integers */
716 struct core_reloc_bitfields_output {
717 	int64_t		ub1;
718 	int64_t		ub2;
719 	int64_t		ub7;
720 	int64_t		sb4;
721 	int64_t		sb20;
722 	int64_t		u32;
723 	int64_t		s32;
724 };
725 
726 struct core_reloc_bitfields {
727 	/* unsigned bitfields */
728 	uint8_t		ub1: 1;
729 	uint8_t		ub2: 2;
730 	uint32_t	ub7: 7;
731 	/* signed bitfields */
732 	int8_t		sb4: 4;
733 	int32_t		sb20: 20;
734 	/* non-bitfields */
735 	uint32_t	u32;
736 	int32_t		s32;
737 };
738 
739 /* different bit sizes (both up and down) */
740 struct core_reloc_bitfields___bit_sz_change {
741 	/* unsigned bitfields */
742 	uint16_t	ub1: 3;		/*  1 ->  3 */
743 	uint32_t	ub2: 20;	/*  2 -> 20 */
744 	uint8_t		ub7: 1;		/*  7 ->  1 */
745 	/* signed bitfields */
746 	int8_t		sb4: 1;		/*  4 ->  1 */
747 	int32_t		sb20: 30;	/* 20 -> 30 */
748 	/* non-bitfields */
749 	uint16_t	u32;			/* 32 -> 16 */
750 	int64_t		s32 __bpf_aligned;	/* 32 -> 64 */
751 };
752 
753 /* turn bitfield into non-bitfield and vice versa */
754 struct core_reloc_bitfields___bitfield_vs_int {
755 	uint64_t	ub1;		/*  3 -> 64 non-bitfield */
756 	uint8_t		ub2;		/* 20 ->  8 non-bitfield */
757 	int64_t		ub7 __bpf_aligned;	/*  7 -> 64 non-bitfield signed */
758 	int64_t		sb4 __bpf_aligned;	/*  4 -> 64 non-bitfield signed */
759 	uint64_t	sb20 __bpf_aligned;	/* 20 -> 16 non-bitfield unsigned */
760 	int32_t		u32: 20;		/* 32 non-bitfield -> 20 bitfield */
761 	uint64_t	s32: 60 __bpf_aligned;	/* 32 non-bitfield -> 60 bitfield */
762 };
763 
764 struct core_reloc_bitfields___just_big_enough {
765 	uint64_t	ub1: 4;
766 	uint64_t	ub2: 60; /* packed tightly */
767 	uint32_t	ub7;
768 	uint32_t	sb4;
769 	uint32_t	sb20;
770 	uint32_t	u32;
771 	uint32_t	s32;
772 } __attribute__((packed)) ;
773 
774 struct core_reloc_bitfields___err_too_big_bitfield {
775 	uint64_t	ub1: 4;
776 	uint64_t	ub2: 61; /* packed tightly */
777 	uint32_t	ub7;
778 	uint32_t	sb4;
779 	uint32_t	sb20;
780 	uint32_t	u32;
781 	uint32_t	s32;
782 } __attribute__((packed)) ;
783 
784 /*
785  * SIZE
786  */
787 struct core_reloc_size_output {
788 	int int_sz;
789 	int int_off;
790 	int struct_sz;
791 	int struct_off;
792 	int union_sz;
793 	int union_off;
794 	int arr_sz;
795 	int arr_off;
796 	int arr_elem_sz;
797 	int arr_elem_off;
798 	int ptr_sz;
799 	int ptr_off;
800 	int enum_sz;
801 	int enum_off;
802 	int float_sz;
803 	int float_off;
804 };
805 
806 struct core_reloc_size {
807 	int int_field;
808 	struct { int x; } struct_field;
809 	union { int x; } union_field;
810 	int arr_field[4];
811 	void *ptr_field;
812 	enum { VALUE = 123 } enum_field;
813 	float float_field;
814 };
815 
816 struct core_reloc_size___diff_sz {
817 	uint64_t int_field;
818 	struct { int x; int y; int z; } struct_field;
819 	union { int x; char bla[123]; } union_field;
820 	char arr_field[10];
821 	void *ptr_field;
822 	enum { OTHER_VALUE = 0xFFFFFFFFFFFFFFFF } enum_field;
823 	double float_field;
824 };
825 
826 struct core_reloc_size___diff_offs {
827 	float float_field;
828 	enum { YET_OTHER_VALUE = 123 } enum_field;
829 	void *ptr_field;
830 	int arr_field[4];
831 	union { int x; } union_field;
832 	struct { int x; } struct_field;
833 	int int_field;
834 };
835 
836 /* Error case of two candidates with the fields (int_field) at the same
837  * offset, but with differing final relocation values: size 4 vs size 1
838  */
839 struct core_reloc_size___err_ambiguous1 {
840 	/* int at offset 0 */
841 	int int_field;
842 
843 	struct { int x; } struct_field;
844 	union { int x; } union_field;
845 	int arr_field[4];
846 	void *ptr_field;
847 	enum { VALUE___1 = 123 } enum_field;
848 	float float_field;
849 };
850 
851 struct core_reloc_size___err_ambiguous2 {
852 	/* char at offset 0 */
853 	char int_field;
854 
855 	struct { int x; } struct_field;
856 	union { int x; } union_field;
857 	int arr_field[4];
858 	void *ptr_field;
859 	enum { VALUE___2 = 123 } enum_field;
860 	float float_field;
861 };
862 
863 /*
864  * TYPE EXISTENCE, MATCH & SIZE
865  */
866 struct core_reloc_type_based_output {
867 	bool struct_exists;
868 	bool complex_struct_exists;
869 	bool union_exists;
870 	bool enum_exists;
871 	bool typedef_named_struct_exists;
872 	bool typedef_anon_struct_exists;
873 	bool typedef_struct_ptr_exists;
874 	bool typedef_int_exists;
875 	bool typedef_enum_exists;
876 	bool typedef_void_ptr_exists;
877 	bool typedef_func_proto_exists;
878 	bool typedef_arr_exists;
879 
880 	bool struct_matches;
881 	bool complex_struct_matches;
882 	bool union_matches;
883 	bool enum_matches;
884 	bool typedef_named_struct_matches;
885 	bool typedef_anon_struct_matches;
886 	bool typedef_struct_ptr_matches;
887 	bool typedef_int_matches;
888 	bool typedef_enum_matches;
889 	bool typedef_void_ptr_matches;
890 	bool typedef_func_proto_matches;
891 	bool typedef_arr_matches;
892 
893 	int struct_sz;
894 	int union_sz;
895 	int enum_sz;
896 	int typedef_named_struct_sz;
897 	int typedef_anon_struct_sz;
898 	int typedef_struct_ptr_sz;
899 	int typedef_int_sz;
900 	int typedef_enum_sz;
901 	int typedef_void_ptr_sz;
902 	int typedef_func_proto_sz;
903 	int typedef_arr_sz;
904 };
905 
906 struct a_struct {
907 	int x;
908 };
909 
910 struct a_complex_struct {
911 	union {
912 		struct a_struct * restrict a;
913 		void *b;
914 	} x;
915 	volatile long y;
916 };
917 
918 union a_union {
919 	int y;
920 	int z;
921 };
922 
923 typedef struct a_struct named_struct_typedef;
924 
925 typedef struct { int x, y, z; } anon_struct_typedef;
926 
927 typedef struct {
928 	int a, b, c;
929 } *struct_ptr_typedef;
930 
931 enum an_enum {
932 	AN_ENUM_VAL1 = 1,
933 	AN_ENUM_VAL2 = 2,
934 	AN_ENUM_VAL3 = 3,
935 };
936 
937 typedef int int_typedef;
938 
939 typedef enum { TYPEDEF_ENUM_VAL1, TYPEDEF_ENUM_VAL2 } enum_typedef;
940 
941 typedef void *void_ptr_typedef;
942 
943 typedef int (*func_proto_typedef)(long);
944 
945 typedef char arr_typedef[20];
946 
947 struct core_reloc_type_based {
948 	struct a_struct f1;
949 	struct a_complex_struct f2;
950 	union a_union f3;
951 	enum an_enum f4;
952 	named_struct_typedef f5;
953 	anon_struct_typedef f6;
954 	struct_ptr_typedef f7;
955 	int_typedef f8;
956 	enum_typedef f9;
957 	void_ptr_typedef f10;
958 	func_proto_typedef f11;
959 	arr_typedef f12;
960 };
961 
962 /* no types in target */
963 struct core_reloc_type_based___all_missing {
964 };
965 
966 /* different member orders, enum variant values, signedness, etc */
967 struct a_struct___diff {
968 	int x;
969 	int a;
970 };
971 
972 struct a_struct___forward;
973 
974 struct a_complex_struct___diff {
975 	union {
976 		struct a_struct___forward *a;
977 		void *b;
978 	} x;
979 	volatile long y;
980 };
981 
982 union a_union___diff {
983 	int z;
984 	int y;
985 };
986 
987 typedef struct a_struct___diff named_struct_typedef___diff;
988 
989 typedef struct { int z, x, y; } anon_struct_typedef___diff;
990 
991 typedef struct {
992 	int c;
993 	int b;
994 	int a;
995 } *struct_ptr_typedef___diff;
996 
997 enum an_enum___diff {
998 	AN_ENUM_VAL2___diff = 0,
999 	AN_ENUM_VAL1___diff = 42,
1000 	AN_ENUM_VAL3___diff = 1,
1001 };
1002 
1003 typedef unsigned int int_typedef___diff;
1004 
1005 typedef enum { TYPEDEF_ENUM_VAL2___diff, TYPEDEF_ENUM_VAL1___diff = 50 } enum_typedef___diff;
1006 
1007 typedef const void *void_ptr_typedef___diff;
1008 
1009 typedef int_typedef___diff (*func_proto_typedef___diff)(long);
1010 
1011 typedef char arr_typedef___diff[3];
1012 
1013 struct core_reloc_type_based___diff {
1014 	struct a_struct___diff f1;
1015 	struct a_complex_struct___diff f2;
1016 	union a_union___diff f3;
1017 	enum an_enum___diff f4;
1018 	named_struct_typedef___diff f5;
1019 	anon_struct_typedef___diff f6;
1020 	struct_ptr_typedef___diff f7;
1021 	int_typedef___diff f8;
1022 	enum_typedef___diff f9;
1023 	void_ptr_typedef___diff f10;
1024 	func_proto_typedef___diff f11;
1025 	arr_typedef___diff f12;
1026 };
1027 
1028 /* different type sizes, extra modifiers, anon vs named enums, etc */
1029 struct a_struct___diff_sz {
1030 	long x;
1031 	int y;
1032 	char z;
1033 };
1034 
1035 union a_union___diff_sz {
1036 	char yy;
1037 	char zz;
1038 };
1039 
1040 typedef struct a_struct___diff_sz named_struct_typedef___diff_sz;
1041 
1042 typedef struct { long xx, yy, zzz; } anon_struct_typedef___diff_sz;
1043 
1044 typedef struct {
1045 	char aa[1], bb[2], cc[3];
1046 } *struct_ptr_typedef___diff_sz;
1047 
1048 enum an_enum___diff_sz {
1049 	AN_ENUM_VAL1___diff_sz = 0x123412341234,
1050 	AN_ENUM_VAL2___diff_sz = 2,
1051 };
1052 
1053 typedef unsigned long int_typedef___diff_sz;
1054 
1055 typedef enum an_enum___diff_sz enum_typedef___diff_sz;
1056 
1057 typedef const void * const void_ptr_typedef___diff_sz;
1058 
1059 typedef int_typedef___diff_sz (*func_proto_typedef___diff_sz)(char);
1060 
1061 typedef int arr_typedef___diff_sz[2];
1062 
1063 struct core_reloc_type_based___diff_sz {
1064 	struct a_struct___diff_sz f1;
1065 	union a_union___diff_sz f2;
1066 	enum an_enum___diff_sz f3;
1067 	named_struct_typedef___diff_sz f4;
1068 	anon_struct_typedef___diff_sz f5;
1069 	struct_ptr_typedef___diff_sz f6;
1070 	int_typedef___diff_sz f7;
1071 	enum_typedef___diff_sz f8;
1072 	void_ptr_typedef___diff_sz f9;
1073 	func_proto_typedef___diff_sz f10;
1074 	arr_typedef___diff_sz f11;
1075 };
1076 
1077 /* incompatibilities between target and local types */
1078 union a_struct___incompat { /* union instead of struct */
1079 	int x;
1080 };
1081 
1082 struct a_union___incompat { /* struct instead of union */
1083 	int y;
1084 	int z;
1085 };
1086 
1087 /* typedef to union, not to struct */
1088 typedef union a_struct___incompat named_struct_typedef___incompat;
1089 
1090 /* typedef to void pointer, instead of struct */
1091 typedef void *anon_struct_typedef___incompat;
1092 
1093 /* extra pointer indirection */
1094 typedef struct {
1095 	int a, b, c;
1096 } **struct_ptr_typedef___incompat;
1097 
1098 /* typedef of a struct with int, instead of int */
1099 typedef struct { int x; } int_typedef___incompat;
1100 
1101 /* typedef to func_proto, instead of enum */
1102 typedef int (*enum_typedef___incompat)(void);
1103 
1104 /* pointer to char instead of void */
1105 typedef char *void_ptr_typedef___incompat;
1106 
1107 /* void return type instead of int */
1108 typedef void (*func_proto_typedef___incompat)(long);
1109 
1110 /* multi-dimensional array instead of a single-dimensional */
1111 typedef int arr_typedef___incompat[20][2];
1112 
1113 struct core_reloc_type_based___incompat {
1114 	union a_struct___incompat f1;
1115 	struct a_union___incompat f2;
1116 	/* the only valid one is enum, to check that something still succeeds */
1117 	enum an_enum f3;
1118 	named_struct_typedef___incompat f4;
1119 	anon_struct_typedef___incompat f5;
1120 	struct_ptr_typedef___incompat f6;
1121 	int_typedef___incompat f7;
1122 	enum_typedef___incompat f8;
1123 	void_ptr_typedef___incompat f9;
1124 	func_proto_typedef___incompat f10;
1125 	arr_typedef___incompat f11;
1126 };
1127 
1128 /* func_proto with incompatible signature */
1129 typedef void (*func_proto_typedef___fn_wrong_ret1)(long);
1130 typedef int * (*func_proto_typedef___fn_wrong_ret2)(long);
1131 typedef struct { int x; } int_struct_typedef;
1132 typedef int_struct_typedef (*func_proto_typedef___fn_wrong_ret3)(long);
1133 typedef int (*func_proto_typedef___fn_wrong_arg)(void *);
1134 typedef int (*func_proto_typedef___fn_wrong_arg_cnt1)(long, long);
1135 typedef int (*func_proto_typedef___fn_wrong_arg_cnt2)(void);
1136 
1137 struct core_reloc_type_based___fn_wrong_args {
1138 	/* one valid type to make sure relos still work */
1139 	struct a_struct f1;
1140 	func_proto_typedef___fn_wrong_ret1 f2;
1141 	func_proto_typedef___fn_wrong_ret2 f3;
1142 	func_proto_typedef___fn_wrong_ret3 f4;
1143 	func_proto_typedef___fn_wrong_arg f5;
1144 	func_proto_typedef___fn_wrong_arg_cnt1 f6;
1145 	func_proto_typedef___fn_wrong_arg_cnt2 f7;
1146 };
1147 
1148 /*
1149  * TYPE ID MAPPING (LOCAL AND TARGET)
1150  */
1151 struct core_reloc_type_id_output {
1152 	int local_anon_struct;
1153 	int local_anon_union;
1154 	int local_anon_enum;
1155 	int local_anon_func_proto_ptr;
1156 	int local_anon_void_ptr;
1157 	int local_anon_arr;
1158 
1159 	int local_struct;
1160 	int local_union;
1161 	int local_enum;
1162 	int local_int;
1163 	int local_struct_typedef;
1164 	int local_func_proto_typedef;
1165 	int local_arr_typedef;
1166 
1167 	int targ_struct;
1168 	int targ_union;
1169 	int targ_enum;
1170 	int targ_int;
1171 	int targ_struct_typedef;
1172 	int targ_func_proto_typedef;
1173 	int targ_arr_typedef;
1174 };
1175 
1176 struct core_reloc_type_id {
1177 	struct a_struct f1;
1178 	union a_union f2;
1179 	enum an_enum f3;
1180 	named_struct_typedef f4;
1181 	func_proto_typedef f5;
1182 	arr_typedef f6;
1183 };
1184 
1185 struct core_reloc_type_id___missing_targets {
1186 	/* nothing */
1187 };
1188 
1189 /*
1190  * ENUMERATOR VALUE EXISTENCE AND VALUE RELOCATION
1191  */
1192 struct core_reloc_enumval_output {
1193 	bool named_val1_exists;
1194 	bool named_val2_exists;
1195 	bool named_val3_exists;
1196 	bool anon_val1_exists;
1197 	bool anon_val2_exists;
1198 	bool anon_val3_exists;
1199 
1200 	int named_val1;
1201 	int named_val2;
1202 	int anon_val1;
1203 	int anon_val2;
1204 };
1205 
1206 struct core_reloc_enum64val_output {
1207 	bool unsigned_val1_exists;
1208 	bool unsigned_val2_exists;
1209 	bool unsigned_val3_exists;
1210 	bool signed_val1_exists;
1211 	bool signed_val2_exists;
1212 	bool signed_val3_exists;
1213 
1214 	long unsigned_val1;
1215 	long unsigned_val2;
1216 	long signed_val1;
1217 	long signed_val2;
1218 };
1219 
1220 enum named_enum {
1221 	NAMED_ENUM_VAL1 = 1,
1222 	NAMED_ENUM_VAL2 = 2,
1223 	NAMED_ENUM_VAL3 = 3,
1224 };
1225 
1226 typedef enum {
1227 	ANON_ENUM_VAL1 = 0x10,
1228 	ANON_ENUM_VAL2 = 0x20,
1229 	ANON_ENUM_VAL3 = 0x30,
1230 } anon_enum;
1231 
1232 struct core_reloc_enumval {
1233 	enum named_enum f1;
1234 	anon_enum f2;
1235 };
1236 
1237 enum named_unsigned_enum64 {
1238 	UNSIGNED_ENUM64_VAL1 = 0x1ffffffffULL,
1239 	UNSIGNED_ENUM64_VAL2 = 0x2,
1240 	UNSIGNED_ENUM64_VAL3 = 0x3ffffffffULL,
1241 };
1242 
1243 enum named_signed_enum64 {
1244 	SIGNED_ENUM64_VAL1 = 0x1ffffffffLL,
1245 	SIGNED_ENUM64_VAL2 = -2,
1246 	SIGNED_ENUM64_VAL3 = 0x3ffffffffLL,
1247 };
1248 
1249 struct core_reloc_enum64val {
1250 	enum named_unsigned_enum64 f1;
1251 	enum named_signed_enum64 f2;
1252 };
1253 
1254 /* differing enumerator values */
1255 enum named_enum___diff {
1256 	NAMED_ENUM_VAL1___diff = 101,
1257 	NAMED_ENUM_VAL2___diff = 202,
1258 	NAMED_ENUM_VAL3___diff = 303,
1259 };
1260 
1261 typedef enum {
1262 	ANON_ENUM_VAL1___diff = 0x11,
1263 	ANON_ENUM_VAL2___diff = 0x22,
1264 	ANON_ENUM_VAL3___diff = 0x33,
1265 } anon_enum___diff;
1266 
1267 struct core_reloc_enumval___diff {
1268 	enum named_enum___diff f1;
1269 	anon_enum___diff f2;
1270 };
1271 
1272 enum named_unsigned_enum64___diff {
1273 	UNSIGNED_ENUM64_VAL1___diff = 0x101ffffffffULL,
1274 	UNSIGNED_ENUM64_VAL2___diff = 0x202ffffffffULL,
1275 	UNSIGNED_ENUM64_VAL3___diff = 0x303ffffffffULL,
1276 };
1277 
1278 enum named_signed_enum64___diff {
1279 	SIGNED_ENUM64_VAL1___diff = -101,
1280 	SIGNED_ENUM64_VAL2___diff = -202,
1281 	SIGNED_ENUM64_VAL3___diff = -303,
1282 };
1283 
1284 struct core_reloc_enum64val___diff {
1285 	enum named_unsigned_enum64___diff f1;
1286 	enum named_signed_enum64___diff f2;
1287 };
1288 
1289 /* missing (optional) third enum value */
1290 enum named_enum___val3_missing {
1291 	NAMED_ENUM_VAL1___val3_missing = 111,
1292 	NAMED_ENUM_VAL2___val3_missing = 222,
1293 };
1294 
1295 typedef enum {
1296 	ANON_ENUM_VAL1___val3_missing = 0x111,
1297 	ANON_ENUM_VAL2___val3_missing = 0x222,
1298 } anon_enum___val3_missing;
1299 
1300 struct core_reloc_enumval___val3_missing {
1301 	enum named_enum___val3_missing f1;
1302 	anon_enum___val3_missing f2;
1303 };
1304 
1305 enum named_unsigned_enum64___val3_missing {
1306 	UNSIGNED_ENUM64_VAL1___val3_missing = 0x111ffffffffULL,
1307 	UNSIGNED_ENUM64_VAL2___val3_missing = 0x222,
1308 };
1309 
1310 enum named_signed_enum64___val3_missing {
1311 	SIGNED_ENUM64_VAL1___val3_missing = 0x111ffffffffLL,
1312 	SIGNED_ENUM64_VAL2___val3_missing = -222,
1313 };
1314 
1315 struct core_reloc_enum64val___val3_missing {
1316 	enum named_unsigned_enum64___val3_missing f1;
1317 	enum named_signed_enum64___val3_missing f2;
1318 };
1319 
1320 /* missing (mandatory) second enum value, should fail */
1321 enum named_enum___err_missing {
1322 	NAMED_ENUM_VAL1___err_missing = 1,
1323 	NAMED_ENUM_VAL3___err_missing = 3,
1324 };
1325 
1326 typedef enum {
1327 	ANON_ENUM_VAL1___err_missing = 0x111,
1328 	ANON_ENUM_VAL3___err_missing = 0x222,
1329 } anon_enum___err_missing;
1330 
1331 struct core_reloc_enumval___err_missing {
1332 	enum named_enum___err_missing f1;
1333 	anon_enum___err_missing f2;
1334 };
1335 
1336 enum named_unsigned_enum64___err_missing {
1337 	UNSIGNED_ENUM64_VAL1___err_missing = 0x1ffffffffULL,
1338 	UNSIGNED_ENUM64_VAL3___err_missing = 0x3ffffffffULL,
1339 };
1340 
1341 enum named_signed_enum64___err_missing {
1342 	SIGNED_ENUM64_VAL1___err_missing = 0x1ffffffffLL,
1343 	SIGNED_ENUM64_VAL3___err_missing = -3,
1344 };
1345 
1346 struct core_reloc_enum64val___err_missing {
1347 	enum named_unsigned_enum64___err_missing f1;
1348 	enum named_signed_enum64___err_missing f2;
1349 };
1350