summaryrefslogtreecommitdiffstats
path: root/include/asm-generic/vmlinux.lds.h
blob: cd28f63bfbc76f5180c62f92350dd0f4ea11ea35 (plain)
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
/*
 * Helper macros to support writing architecture specific
 * linker scripts.
 *
 * A minimal linker scripts has following content:
 * [This is a sample, architectures may have special requiriements]
 *
 * OUTPUT_FORMAT(...)
 * OUTPUT_ARCH(...)
 * ENTRY(...)
 * SECTIONS
 * {
 *	. = START;
 *	__init_begin = .;
 *	HEAD_TEXT_SECTION
 *	INIT_TEXT_SECTION(PAGE_SIZE)
 *	INIT_DATA_SECTION(...)
 *	PERCPU_SECTION(CACHELINE_SIZE)
 *	__init_end = .;
 *
 *	_stext = .;
 *	TEXT_SECTION = 0
 *	_etext = .;
 *
 *      _sdata = .;
 *	RO_DATA_SECTION(PAGE_SIZE)
 *	RW_DATA_SECTION(...)
 *	_edata = .;
 *
 *	EXCEPTION_TABLE(...)
 *	NOTES
 *
 *	BSS_SECTION(0, 0, 0)
 *	_end = .;
 *
 *	STABS_DEBUG
 *	DWARF_DEBUG
 *
 *	DISCARDS		// must be the last
 * }
 *
 * [__init_begin, __init_end] is the init section that may be freed after init
 * 	// __init_begin and __init_end should be page aligned, so that we can
 *	// free the whole .init memory
 * [_stext, _etext] is the text section
 * [_sdata, _edata] is the data section
 *
 * Some of the included output section have their own set of constants.
 * Examples are: [__initramfs_start, __initramfs_end] for initramfs and
 *               [__nosave_begin, __nosave_end] for the nosave data
 */

#ifndef LOAD_OFFSET
#define LOAD_OFFSET 0
#endif

/* Align . to a 8 byte boundary equals to maximum function alignment. */
#define ALIGN_FUNCTION()  . = ALIGN(8)

/*
 * LD_DEAD_CODE_DATA_ELIMINATION option enables -fdata-sections, which
 * generates .data.identifier sections, which need to be pulled in with
 * .data. We don't want to pull in .data..other sections, which Linux
 * has defined. Same for text and bss.
 *
 * RODATA_MAIN is not used because existing code already defines .rodata.x
 * sections to be brought in with rodata.
 */
#ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION
#define TEXT_MAIN .text .text.[0-9a-zA-Z_]*
#define DATA_MAIN .data .data.[0-9a-zA-Z_]* .data..LPBX*
#define SDATA_MAIN .sdata .sdata.[0-9a-zA-Z_]*
#define RODATA_MAIN .rodata .rodata.[0-9a-zA-Z_]*
#define BSS_MAIN .bss .bss.[0-9a-zA-Z_]*
#define SBSS_MAIN .sbss .sbss.[0-9a-zA-Z_]*
#else
#define TEXT_MAIN .text
#define DATA_MAIN .data
#define SDATA_MAIN .sdata
#define RODATA_MAIN .rodata
#define BSS_MAIN .bss
#define SBSS_MAIN .sbss
#endif

/*
 * Align to a 32 byte boundary equal to the
 * alignment gcc 4.5 uses for a struct
 */
#define STRUCT_ALIGNMENT 32
#define STRUCT_ALIGN() . = ALIGN(STRUCT_ALIGNMENT)

/* The actual configuration determine if the init/exit sections
 * are handled as text/data or they can be discarded (which
 * often happens at runtime)
 */
#ifdef CONFIG_HOTPLUG_CPU
#define CPU_KEEP(sec)    *(.cpu##sec)
#define CPU_DISCARD(sec)
#else
#define CPU_KEEP(sec)
#define CPU_DISCARD(sec) *(.cpu##sec)
#endif

#if defined(CONFIG_MEMORY_HOTPLUG)
#define MEM_KEEP(sec)    *(.mem##sec)
#define MEM_DISCARD(sec)
#else
#define MEM_KEEP(sec)
#define MEM_DISCARD(sec) *(.mem##sec)
#endif

#ifdef CONFIG_FTRACE_MCOUNT_RECORD
#ifdef CC_USING_PATCHABLE_FUNCTION_ENTRY
#define MCOUNT_REC()	. = ALIGN(8);				\
			__start_mcount_loc = .;			\
			KEEP(*(__patchable_function_entries))	\
			__stop_mcount_loc = .;
#else
#define MCOUNT_REC()	. = ALIGN(8);				\
			__start_mcount_loc = .;			\
			KEEP(*(__mcount_loc))			\
			__stop_mcount_loc = .;
#endif
#else
#define MCOUNT_REC()
#endif

#ifdef CONFIG_TRACE_BRANCH_PROFILING
#define LIKELY_PROFILE()	__start_annotated_branch_profile = .;	\
				KEEP(*(_ftrace_annotated_branch))	\
				__stop_annotated_branch_profile = .;
#else
#define LIKELY_PROFILE()
#endif

#ifdef CONFIG_PROFILE_ALL_BRANCHES
#define BRANCH_PROFILE()	__start_branch_profile = .;		\
				KEEP(*(_ftrace_branch))			\
				__stop_branch_profile = .;
#else
#define BRANCH_PROFILE()
#endif

#ifdef CONFIG_KPROBES
#define KPROBE_BLACKLIST()	. = ALIGN(8);				      \
				__start_kprobe_blacklist = .;		      \
				KEEP(*(_kprobe_blacklist))		      \
				__stop_kprobe_blacklist = .;
#else
#define KPROBE_BLACKLIST()
#endif

#ifdef CONFIG_FUNCTION_ERROR_INJECTION
#define ERROR_INJECT_WHITELIST()	STRUCT_ALIGN();			      \
			__start_error_injection_whitelist = .;		      \
			KEEP(*(_error_injection_whitelist))		      \
			__stop_error_injection_whitelist = .;
#else
#define ERROR_INJECT_WHITELIST()
#endif

#ifdef CONFIG_EVENT_TRACING
#define FTRACE_EVENTS()	. = ALIGN(8);					\
			__start_ftrace_events = .;			\
			KEEP(*(_ftrace_events))				\
			__stop_ftrace_events = .;			\
			__start_ftrace_eval_maps = .;			\
			KEEP(*(_ftrace_eval_map))			\
			__stop_ftrace_eval_maps = .;
#else
#define FTRACE_EVENTS()
#endif

#ifdef CONFIG_TRACING
#define TRACE_PRINTKS()	 __start___trace_bprintk_fmt = .;      \
			 KEEP(*(__trace_printk_fmt)) /* Trace_printk fmt' pointer */ \
			 __stop___trace_bprintk_fmt = .;
#define TRACEPOINT_STR() __start___tracepoint_str = .;	\
			 KEEP(*(__tracepoint_str)) /* Trace_printk fmt' pointer */ \
			 __stop___tracepoint_str = .;
#else
#define TRACE_PRINTKS()
#define TRACEPOINT_STR()
#endif

#ifdef CONFIG_FTRACE_SYSCALLS
#define TRACE_SYSCALLS() . = ALIGN(8);					\
			 __start_syscalls_metadata = .;			\
			 KEEP(*(__syscalls_metadata))			\
			 __stop_syscalls_metadata = .;
#else
#define TRACE_SYSCALLS()
#endif

#ifdef CONFIG_BPF_EVENTS
#define BPF_RAW_TP() STRUCT_ALIGN();					\
			 __start__bpf_raw_tp = .;			\
			 KEEP(*(__bpf_raw_tp_map))			\
			 __stop__bpf_raw_tp = .;
#else
#define BPF_RAW_TP()
#endif

#ifdef CONFIG_SERIAL_EARLYCON
#define EARLYCON_TABLE() . = ALIGN(8);				\
			 __earlycon_table = .;			\
			 KEEP(*(__earlycon_table))		\
			 __earlycon_table_end = .;
#else
#define EARLYCON_TABLE()
#endif

#ifdef CONFIG_SECURITY
#define LSM_TABLE()	. = ALIGN(8);					\
			__start_lsm_info = .;				\
			KEEP(*(.lsm_info.init))				\
			__end_lsm_info = .;
#else
#define LSM_TABLE()
#endif

#define ___OF_TABLE(cfg, name)	_OF_TABLE_##cfg(name)
#define __OF_TABLE(cfg, name)	___OF_TABLE(cfg, name)
#define OF_TABLE(cfg, name)	__OF_TABLE(IS_ENABLED(cfg), name)
#define _OF_TABLE_0(name)
#define _OF_TABLE_1(name)						\
	. = ALIGN(8);							\
	__##name##_of_table = .;					\
	KEEP(*(__##name##_of_table))					\
	KEEP(*(__##name##_of_table_end))

#define TIMER_OF_TABLES()	OF_TABLE(CONFIG_TIMER_OF, timer)
#define IRQCHIP_OF_MATCH_TABLE() OF_TABLE(CONFIG_IRQCHIP, irqchip)
#define CLK_OF_TABLES()		OF_TABLE(CONFIG_COMMON_CLK, clk)
#define RESERVEDMEM_OF_TABLES()	OF_TABLE(CONFIG_OF_RESERVED_MEM, reservedmem)
#define CPU_METHOD_OF_TABLES()	OF_TABLE(CONFIG_SMP, cpu_method)
#define CPUIDLE_METHOD_OF_TABLES() OF_TABLE(CONFIG_CPU_IDLE, cpuidle_method)

#ifdef CONFIG_ACPI
#define ACPI_PROBE_TABLE(name)						\
	. = ALIGN(8);							\
	__##name##_acpi_probe_table = .;				\
	KEEP(*(__##name##_acpi_probe_table))				\
	__##name##_acpi_probe_table_end = .;
#else
#define ACPI_PROBE_TABLE(name)
#endif

#ifdef CONFIG_THERMAL
#define THERMAL_TABLE(name)						\
	. = ALIGN(8);							\
	__##name##_thermal_table = .;					\
	KEEP(*(__##name##_thermal_table))				\
	__##name##_thermal_table_end = .;
#else
#define THERMAL_TABLE(name)
#endif

#define KERNEL_DTB()							\
	STRUCT_ALIGN();							\
	__dtb_start = .;						\
	KEEP(*(.dtb.init.rodata))					\
	__dtb_end = .;

/*
 * .data section
 */
#define DATA_DATA							\
	*(.xiptext)							\
	*(DATA_MAIN)							\
	*(.ref.data)							\
	*(.data..shared_aligned) /* percpu related */			\
	MEM_KEEP(init.data*)						\
	MEM_KEEP(exit.data*)						\
	*(.data.unlikely)						\
	__start_once = .;						\
	*(.data.once)							\
	__end_once = .;							\
	STRUCT_ALIGN();							\
	*(__tracepoints)						\
	/* implement dynamic printk debug */				\
	. = ALIGN(8);							\
	__start___verbose = .;						\
	KEEP(*(__verbose))                                              \
	__stop___verbose = .;						\
	LIKELY_PROFILE()		       				\
	BRANCH_PROFILE()						\
	TRACE_PRINTKS()							\
	BPF_RAW_TP()							\
	TRACEPOINT_STR()

/*
 * Data section helpers
 */
#define NOSAVE_DATA							\
	. = ALIGN(PAGE_SIZE);						\
	__nosave_begin = .;						\
	*(.data..nosave)						\
	. = ALIGN(PAGE_SIZE);						\
	__nosave_end = .;

#define PAGE_ALIGNED_DATA(page_align)					\
	. = ALIGN(page_align);						\
	*(.data..page_aligned)

#define READ_MOSTLY_DATA(align)						\
	. = ALIGN(align);						\
	*(.data..read_mostly)						\
	. = ALIGN(align);

#define CACHELINE_ALIGNED_DATA(align)					\
	. = ALIGN(align);						\
	*(.data..cacheline_aligned)

#define INIT_TASK_DATA(align)						\
	. = ALIGN(align);						\
	__start_init_task = .;						\
	init_thread_union = .;						\
	init_stack = .;							\
	KEEP(*(.data..init_task))					\
	KEEP(*(.data..init_thread_info))				\
	. = __start_init_task + THREAD_SIZE;				\
	__end_init_task = .;

#define JUMP_TABLE_DATA							\
	. = ALIGN(8);							\
	__start___jump_table = .;					\
	KEEP(*(__jump_table))						\
	__stop___jump_table = .;

/*
 * Allow architectures to handle ro_after_init data on their
 * own by defining an empty RO_AFTER_INIT_DATA.
 */
#ifndef RO_AFTER_INIT_DATA
#define RO_AFTER_INIT_DATA						\
	__start_ro_after_init = .;					\
	*(.data..ro_after_init)						\
	JUMP_TABLE_DATA							\
	__end_ro_after_init = .;
#endif

/*
 * Read only Data
 */
#define RO_DATA_SECTION(align)						\
	. = ALIGN((align));						\
	.rodata           : AT(ADDR(.rodata) - LOAD_OFFSET) {		\
		__start_rodata = .;					\
		*(.rodata) *(.rodata.*)					\
		RO_AFTER_INIT_DATA	/* Read only after init */	\
		. = ALIGN(8);						\
		__start___tracepoints_ptrs = .;				\
		KEEP(*(__tracepoints_ptrs)) /* Tracepoints: pointer array */ \
		__stop___tracepoints_ptrs = .;				\
		*(__tracepoints_strings)/* Tracepoints: strings */	\
	}								\
									\
	.rodata1          : AT(ADDR(.rodata1) - LOAD_OFFSET) {		\
		*(.rodata1)						\
	}								\
									\
	/* PCI quirks */						\
	.pci_fixup        : AT(ADDR(.pci_fixup) - LOAD_OFFSET) {	\
		__start_pci_fixups_early = .;				\
		KEEP(*(.pci_fixup_early))				\
		__end_pci_fixups_early = .;				\
		__start_pci_fixups_header = .;				\
		KEEP(*(.pci_fixup_header))				\
		__end_pci_fixups_header = .;				\
		__start_pci_fixups_final = .;				\
		KEEP(*(.pci_fixup_final))				\
		__end_pci_fixups_final = .;				\
		__start_pci_fixups_enable = .;				\
		KEEP(*(.pci_fixup_enable))				\
		__end_pci_fixups_enable = .;				\
		__start_pci_fixups_resume = .;				\
		KEEP(*(.pci_fixup_resume))				\
		__end_pci_fixups_resume = .;				\
		__start_pci_fixups_resume_early = .;			\
		KEEP(*(.pci_fixup_resume_early))			\
		__end_pci_fixups_resume_early = .;			\
		__start_pci_fixups_suspend = .;				\
		KEEP(*(.pci_fixup_suspend))				\
		__end_pci_fixups_suspend = .;				\
		__start_pci_fixups_suspend_late = .;			\
		KEEP(*(.pci_fixup_suspend_late))			\
		__end_pci_fixups_suspend_late = .;			\
	}								\
									\
	/* Built-in firmware blobs */					\
	.builtin_fw        : AT(ADDR(.builtin_fw) - LOAD_OFFSET) {	\
		__start_builtin_fw = .;					\
		KEEP(*(.builtin_fw))					\
		__end_builtin_fw = .;					\
	}								\
									\
	TRACEDATA							\
									\
	/* Kernel symbol table: Normal symbols */			\
	__ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {		\
		__start___ksymtab = .;					\
		KEEP(*(SORT(___ksymtab+*)))				\
		__stop___ksymtab = .;					\
	}								\
									\
	/* Kernel symbol table: GPL-only symbols */			\
	__ksymtab_gpl     : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) {	\
		__start___ksymtab_gpl = .;				\
		KEEP(*(SORT(___ksymtab_gpl+*)))				\
		__stop___ksymtab_gpl = .;				\
	}								\
									\
	/* Kernel symbol table: Normal unused symbols */		\
	__ksymtab_unused  : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) {	\
		__start___ksymtab_unused = .;				\
		KEEP(*(SORT(___ksymtab_unused+*)))			\
		__stop___ksymtab_unused = .;				\
	}								\
									\
	/* Kernel symbol table: GPL-only unused symbols */		\
	__ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
		__start___ksymtab_unused_gpl = .;			\
		KEEP(*(SORT(___ksymtab_unused_gpl+*)))			\
		__stop___ksymtab_unused_gpl = .;			\
	}								\
									\
	/* Kernel symbol table: GPL-future-only symbols */		\
	__ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
		__start___ksymtab_gpl_future = .;			\
		KEEP(*(SORT(___ksymtab_gpl_future+*)))			\
		__stop___ksymtab_gpl_future = .;			\
	}								\
									\
	/* Kernel symbol table: Normal symbols */			\
	__kcrctab         : AT(ADDR(__kcrctab) - LOAD_OFFSET) {		\
		__start___kcrctab = .;					\
		KEEP(*(SORT(___kcrctab+*)))				\
		__stop___kcrctab = .;					\
	}								\
									\
	/* Kernel symbol table: GPL-only symbols */			\
	__kcrctab_gpl     : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) {	\
		__start___kcrctab_gpl = .;				\
		KEEP(*(SORT(___kcrctab_gpl+*)))				\
		__stop___kcrctab_gpl = .;				\
	}								\
									\
	/* Kernel symbol table: Normal unused symbols */		\
	__kcrctab_unused  : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) {	\
		__start___kcrctab_unused = .;				\
		KEEP(*(SORT(___kcrctab_unused+*)))			\
		__stop___kcrctab_unused = .;				\
	}								\
									\
	/* Kernel symbol table: GPL-only unused symbols */		\
	__kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
		__start___kcrctab_unused_gpl = .;			\
		KEEP(*(SORT(___kcrctab_unused_gpl+*)))			\
		__stop___kcrctab_unused_gpl = .;			\
	}								\
									\
	/* Kernel symbol table: GPL-future-only symbols */		\
	__kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
		__start___kcrctab_gpl_future = .;			\
		KEEP(*(SORT(___kcrctab_gpl_future+*)))			\
		__stop___kcrctab_gpl_future = .;			\
	}								\
									\
	/* Kernel symbol table: strings */				\
        __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) {	\
		*(__ksymtab_strings)					\
	}								\
									\
	/* __*init sections */						\
	__init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) {		\
		*(.ref.rodata)						\
		MEM_KEEP(init.rodata)					\
		MEM_KEEP(exit.rodata)					\
	}								\
									\
	/* Built-in module parameters. */				\
	__param : AT(ADDR(__param) - LOAD_OFFSET) {			\
		__start___param = .;					\
		KEEP(*(__param))					\
		__stop___param = .;					\
	}								\
									\
	/* Built-in module versions. */					\
	__modver : AT(ADDR(__modver) - LOAD_OFFSET) {			\
		__start___modver = .;					\
		KEEP(*(__modver))					\
		__stop___modver = .;					\
		. = ALIGN((align));					\
		__end_rodata = .;					\
	}								\
	. = ALIGN((align));

/* RODATA & RO_DATA provided for backward compatibility.
 * All archs are supposed to use RO_DATA() */
#define RODATA          RO_DATA_SECTION(4096)
#define RO_DATA(align)  RO_DATA_SECTION(align)

/*
 * .text section. Map to function alignment to avoid address changes
 * during second ld run in second ld pass when generating System.map
 *
 * TEXT_MAIN here will match .text.fixup and .text.unlikely if dead
 * code elimination is enabled, so these sections should be converted
 * to use ".." first.
 */
#define TEXT_TEXT							\
		ALIGN_FUNCTION();					\
		*(.text.hot TEXT_MAIN .text.fixup .text.unlikely)	\
		*(.text..refcount)					\
		*(.ref.text)						\
	MEM_KEEP(init.text*)						\
	MEM_KEEP(exit.text*)						\


/* sched.text is aling to function alignment to secure we have same
 * address even at second ld pass when generating System.map */
#define SCHED_TEXT							\
		ALIGN_FUNCTION();					\
		__sched_text_start = .;					\
		*(.sched.text)						\
		__sched_text_end = .;

/* spinlock.text is aling to function alignment to secure we have same
 * address even at second ld pass when generating System.map */
#define LOCK_TEXT							\
		ALIGN_FUNCTION();					\
		__lock_text_start = .;					\
		*(.spinlock.text)					\
		__lock_text_end = .;

#define CPUIDLE_TEXT							\
		ALIGN_FUNCTION();					\
		__cpuidle_text_start = .;				\
		*(.cpuidle.text)					\
		__cpuidle_text_end = .;

#define KPROBES_TEXT							\
		ALIGN_FUNCTION();					\
		__kprobes_text_start = .;				\
		*(.kprobes.text)					\
		__kprobes_text_end = .;

#define ENTRY_TEXT							\
		ALIGN_FUNCTION();					\
		__entry_text_start = .;					\
		*(.entry.text)						\
		__entry_text_end = .;

#define IRQENTRY_TEXT							\
		ALIGN_FUNCTION();					\
		__irqentry_text_start = .;				\
		*(.irqentry.text)					\
		__irqentry_text_end = .;

#define SOFTIRQENTRY_TEXT						\
		ALIGN_FUNCTION();					\
		__softirqentry_text_start = .;				\
		*(.softirqentry.text)					\
		__softirqentry_text_end = .;

/* Section used for early init (in .S files) */
#define HEAD_TEXT  KEEP(*(.head.text))

#define HEAD_TEXT_SECTION							\
	.head.text : AT(ADDR(.head.text) - LOAD_OFFSET) {		\
		HEAD_TEXT						\
	}

/*
 * Exception table
 */
#define EXCEPTION_TABLE(align)						\
	. = ALIGN(align);						\
	__ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {		\
		__start___ex_table = .;					\
		KEEP(*(__ex_table))					\
		__stop___ex_table = .;					\
	}

/*
 * Init task
 */
#define INIT_TASK_DATA_SECTION(align)					\
	. = ALIGN(align);						\
	.data..init_task :  AT(ADDR(.data..init_task) - LOAD_OFFSET) {	\
		INIT_TASK_DATA(align)					\
	}

#ifdef CONFIG_CONSTRUCTORS
#define KERNEL_CTORS()	. = ALIGN(8);			   \
			__ctors_start = .;		   \
			KEEP(*(.ctors))			   \
			KEEP(*(SORT(.init_array.*)))	   \
			KEEP(*(.init_array))		   \
			__ctors_end = .;
#else
#define KERNEL_CTORS()
#endif

/* init and exit section handling */
#define INIT_DATA							\
	KEEP(*(SORT(___kentry+*)))					\
	*(.init.data init.data.*)					\
	MEM_DISCARD(init.data*)						\
	KERNEL_CTORS()							\
	MCOUNT_REC()							\
	*(.init.rodata .init.rodata.*)					\
	FTRACE_EVENTS()							\
	TRACE_SYSCALLS()						\
	KPROBE_BLACKLIST()						\
	ERROR_INJECT_WHITELIST()					\
	MEM_DISCARD(init.rodata)					\
	CLK_OF_TABLES()							\
	RESERVEDMEM_OF_TABLES()						\
	TIMER_OF_TABLES()						\
	CPU_METHOD_OF_TABLES()						\
	CPUIDLE_METHOD_OF_TABLES()					\
	KERNEL_DTB()							\
	IRQCHIP_OF_MATCH_TABLE()					\
	ACPI_PROBE_TABLE(irqchip)					\
	ACPI_PROBE_TABLE(timer)						\
	THERMAL_TABLE(governor)						\
	EARLYCON_TABLE()						\
	LSM_TABLE()

#define INIT_TEXT							\
	*(.init.text .init.text.*)					\
	*(.text.startup)						\
	MEM_DISCARD(init.text*)

#define EXIT_DATA							\
	*(.exit.data .exit.data.*)					\
	*(.fini_array .fini_array.*)					\
	*(.dtors .dtors.*)						\
	MEM_DISCARD(exit.data*)						\
	MEM_DISCARD(exit.rodata*)

#define EXIT_TEXT							\
	*(.exit.text)							\
	*(.text.exit)							\
	MEM_DISCARD(exit.text)

#define EXIT_CALL							\
	*(.exitcall.exit)

/*
 * bss (Block Started by Symbol) - uninitialized data
 * zeroed during startup
 */
#define SBSS(sbss_align)						\
	. = ALIGN(sbss_align);						\
	.sbss : AT(ADDR(.sbss) - LOAD_OFFSET) {				\
		*(.dynsbss)						\
		*(SBSS_MAIN)						\
		*(.scommon)						\
	}

/*
 * Allow archectures to redefine BSS_FIRST_SECTIONS to add extra
 * sections to the front of bss.
 */
#ifndef BSS_FIRST_SECTIONS
#define BSS_FIRST_SECTIONS
#endif

#define BSS(bss_align)							\
	. = ALIGN(bss_align);						\
	.bss : AT(ADDR(.bss) - LOAD_OFFSET) {				\
		BSS_FIRST_SECTIONS					\
		*(.bss..page_aligned)					\
		*(.dynbss)						\
		*(BSS_MAIN)						\
		*(COMMON)						\
	}

/*
 * DWARF debug sections.
 * Symbols in the DWARF debugging sections are relative to
 * the beginning of the section so we begin them at 0.
 */
#define DWARF_DEBUG							\
		/* DWARF 1 */						\
		.debug          0 : { *(.debug) }			\
		.line           0 : { *(.line) }			\
		/* GNU DWARF 1 extensions */				\
		.debug_srcinfo  0 : { *(.debug_srcinfo) }		\
		.debug_sfnames  0 : { *(.debug_sfnames) }		\
		/* DWARF 1.1 and DWARF 2 */				\
		.debug_aranges  0 : { *(.debug_aranges) }		\
		.debug_pubnames 0 : { *(.debug_pubnames) }		\
		/* DWARF 2 */						\
		.debug_info     0 : { *(.debug_info			\
				.gnu.linkonce.wi.*) }			\
		.debug_abbrev   0 : { *(.debug_abbrev) }		\
		.debug_line     0 : { *(.debug_line) }			\
		.debug_frame    0 : { *(.debug_frame) }			\
		.debug_str      0 : { *(.debug_str) }			\
		.debug_loc      0 : { *(.debug_loc) }			\
		.debug_macinfo  0 : { *(.debug_macinfo) }		\
		.debug_pubtypes 0 : { *(.debug_pubtypes) }		\
		/* DWARF 3 */						\
		.debug_ranges	0 : { *(.debug_ranges) }		\
		/* SGI/MIPS DWARF 2 extensions */			\
		.debug_weaknames 0 : { *(.debug_weaknames) }		\
		.debug_funcnames 0 : { *(.debug_funcnames) }		\
		.debug_typenames 0 : { *(.debug_typenames) }		\
		.debug_varnames  0 : { *(.debug_varnames) }		\
		/* GNU DWARF 2 extensions */				\
		.debug_gnu_pubnames 0 : { *(.debug_gnu_pubnames) }	\
		.debug_gnu_pubtypes 0 : { *(.debug_gnu_pubtypes) }	\
		/* DWARF 4 */						\
		.debug_types	0 : { *(.debug_types) }			\
		/* DWARF 5 */						\
		.debug_macro	0 : { *(.debug_macro) }			\
		.debug_addr	0 : { *(.debug_addr) }

		/* Stabs debugging sections.  */
#define STABS_DEBUG							\
		.stab 0 : { *(.stab) }					\
		.stabstr 0 : { *(.stabstr) }				\
		.stab.excl 0 : { *(.stab.excl) }			\
		.stab.exclstr 0 : { *(.stab.exclstr) }			\
		.stab.index 0 : { *(.stab.index) }			\
		.stab.indexstr 0 : { *(.stab.indexstr) }		\
		.comment 0 : { *(.comment) }

#ifdef CONFIG_GENERIC_BUG
#define BUG_TABLE							\
	. = ALIGN(8);							\
	__bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) {		\
		__start___bug_table = .;				\
		KEEP(*(__bug_table))					\
		__stop___bug_table = .;					\
	}
#else
#define BUG_TABLE
#endif

#ifdef CONFIG_UNWINDER_ORC
#define ORC_UNWIND_TABLE						\
	. = ALIGN(4);							\
	.orc_unwind_ip : AT(ADDR(.orc_unwind_ip) - LOAD_OFFSET) {	\
		__start_orc_unwind_ip = .;				\
		KEEP(*(.orc_unwind_ip))					\
		__stop_orc_unwind_ip = .;				\
	}								\
	. = ALIGN(2);							\
	.orc_unwind : AT(ADDR(.orc_unwind) - LOAD_OFFSET) {		\
		__start_orc_unwind = .;					\
		KEEP(*(.orc_unwind))					\
		__stop_orc_unwind = .;					\
	}								\
	. = ALIGN(4);							\
	.orc_lookup : AT(ADDR(.orc_lookup) - LOAD_OFFSET) {		\
		orc_lookup = .;						\
		. += (((SIZEOF(.text) + LOOKUP_BLOCK_SIZE - 1) /	\
			LOOKUP_BLOCK_SIZE) + 1) * 4;			\
		orc_lookup_end = .;					\
	}
#else
#define ORC_UNWIND_TABLE
#endif

#ifdef CONFIG_PM_TRACE
#define TRACEDATA							\
	. = ALIGN(4);							\
	.tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {		\
		__tracedata_start = .;					\
		KEEP(*(.tracedata))					\
		__tracedata_end = .;					\
	}
#else
#define TRACEDATA
#endif

#define NOTES								\
	.notes : AT(ADDR(.notes) - LOAD_OFFSET) {			\
		__start_notes = .;					\
		KEEP(*(.note.*))					\
		__stop_notes = .;					\
	}

#define INIT_SETUP(initsetup_align)					\
		. = ALIGN(initsetup_align);				\
		__setup_start = .;					\
		KEEP(*(.init.setup))					\
		__setup_end = .;

#define INIT_CALLS_LEVEL(level)						\
		__initcall##level##_start = .;				\
		KEEP(*(.initcall##level##.init))			\
		KEEP(*(.initcall##level##s.init))			\

#define INIT_CALLS							\
		__initcall_start = .;					\
		KEEP(*(.initcallearly.init))				\
		INIT_CALLS_LEVEL(0)					\
		INIT_CALLS_LEVEL(1)					\
		INIT_CALLS_LEVEL(2)					\
		INIT_CALLS_LEVEL(3)					\
		INIT_CALLS_LEVEL(4)					\
		INIT_CALLS_LEVEL(5)					\
		INIT_CALLS_LEVEL(rootfs)				\
		INIT_CALLS_LEVEL(6)					\
		INIT_CALLS_LEVEL(7)					\
		__initcall_end = .;

#define CON_INITCALL							\
		__con_initcall_start = .;				\
		KEEP(*(.con_initcall.init))				\
		__con_initcall_end = .;

#ifdef CONFIG_BLK_DEV_INITRD
#define INIT_RAM_FS							\
	. = ALIGN(4);							\
	__initramfs_start = .;						\
	KEEP(*(.init.ramfs))						\
	. = ALIGN(8);							\
	KEEP(*(.init.ramfs.info))
#else
#define INIT_RAM_FS
#endif

/*
 * Memory encryption operates on a page basis. Since we need to clear
 * the memory encryption mask for this section, it needs to be aligned
 * on a page boundary and be a page-size multiple in length.
 *
 * Note: We use a separate section so that only this section gets
 * decrypted to avoid exposing more than we wish.
 */
#ifdef CONFIG_AMD_MEM_ENCRYPT
#define PERCPU_DECRYPTED_SECTION					\
	. = ALIGN(PAGE_SIZE);						\
	*(.data..percpu..decrypted)					\
	. = ALIGN(PAGE_SIZE);
#else
#define PERCPU_DECRYPTED_SECTION
#endif


/*
 * Default discarded sections.
 *
 * Some archs want to discard exit text/data at runtime rather than
 * link time due to cross-section references such as alt instructions,
 * bug table, eh_frame, etc.  DISCARDS must be the last of output
 * section definitions so that such archs put those in earlier section
 * definitions.
 */
#define DISCARDS							\
	/DISCARD/ : {							\
	EXIT_TEXT							\
	EXIT_DATA							\
	EXIT_CALL							\
	*(.discard)							\
	*(.discard.*)							\
	*(.modinfo)							\
	}

/**
 * PERCPU_INPUT - the percpu input sections
 * @cacheline: cacheline size
 *
 * The core percpu section names and core symbols which do not rely
 * directly upon load addresses.
 *
 * @cacheline is used to align subsections to avoid false cacheline
 * sharing between subsections for different purposes.
 */
#define PERCPU_INPUT(cacheline)						\
	__per_cpu_start = .;						\
	*(.data..percpu..first)						\
	. = ALIGN(PAGE_SIZE);						\
	*(.data..percpu..page_aligned)					\
	. = ALIGN(cacheline);						\
	*(.data..percpu..read_mostly)					\
	. = ALIGN(cacheline);						\
	*(.data..percpu)						\
	*(.data..percpu..shared_aligned)				\
	PERCPU_DECRYPTED_SECTION					\
	__per_cpu_end = .;

/**
 * PERCPU_VADDR - define output section for percpu area
 * @cacheline: cacheline size
 * @vaddr: explicit base address (optional)
 * @phdr: destination PHDR (optional)
 *
 * Macro which expands to output section for percpu area.
 *
 * @cacheline is used to align subsections to avoid false cacheline
 * sharing between subsections for different purposes.
 *
 * If @vaddr is not blank, it specifies explicit base address and all
 * percpu symbols will be offset from the given address.  If blank,
 * @vaddr always equals @laddr + LOAD_OFFSET.
 *
 * @phdr defines the output PHDR to use if not blank.  Be warned that
 * output PHDR is sticky.  If @phdr is specified, the next output
 * section in the linker script will go there too.  @phdr should have
 * a leading colon.
 *
 * Note that this macros defines __per_cpu_load as an absolute symbol.
 * If there is no need to put the percpu section at a predetermined
 * address, use PERCPU_SECTION.
 */
#define PERCPU_VADDR(cacheline, vaddr, phdr)				\
	__per_cpu_load = .;						\
	.data..percpu vaddr : AT(__per_cpu_load - LOAD_OFFSET) {	\
		PERCPU_INPUT(cacheline)					\
	} phdr								\
	. = __per_cpu_load + SIZEOF(.data..percpu);

/**
 * PERCPU_SECTION - define output section for percpu area, simple version
 * @cacheline: cacheline size
 *
 * Align to PAGE_SIZE and outputs output section for percpu area.  This
 * macro doesn't manipulate @vaddr or @phdr and __per_cpu_load and
 * __per_cpu_start will be identical.
 *
 * This macro is equivalent to ALIGN(PAGE_SIZE); PERCPU_VADDR(@cacheline,,)
 * except that __per_cpu_load is defined as a relative symbol against
 * .data..percpu which is required for relocatable x86_32 configuration.
 */
#define PERCPU_SECTION(cacheline)					\
	. = ALIGN(PAGE_SIZE);						\
	.data..percpu	: AT(ADDR(.data..percpu) - LOAD_OFFSET) {	\
		__per_cpu_load = .;					\
		PERCPU_INPUT(cacheline)					\
	}


/*
 * Definition of the high level *_SECTION macros
 * They will fit only a subset of the architectures
 */


/*
 * Writeable data.
 * All sections are combined in a single .data section.
 * The sections following CONSTRUCTORS are arranged so their
 * typical alignment matches.
 * A cacheline is typical/always less than a PAGE_SIZE so
 * the sections that has this restriction (or similar)
 * is located before the ones requiring PAGE_SIZE alignment.
 * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which
 * matches the requirement of PAGE_ALIGNED_DATA.
 *
 * use 0 as page_align if page_aligned data is not used */
#define RW_DATA_SECTION(cacheline, pagealigned, inittask)		\
	. = ALIGN(PAGE_SIZE);						\
	.data : AT(ADDR(.data) - LOAD_OFFSET) {				\
		INIT_TASK_DATA(inittask)				\
		NOSAVE_DATA						\
		PAGE_ALIGNED_DATA(pagealigned)				\
		CACHELINE_ALIGNED_DATA(cacheline)			\
		READ_MOSTLY_DATA(cacheline)				\
		DATA_DATA						\
		CONSTRUCTORS						\
	}								\
	BUG_TABLE							\

#define INIT_TEXT_SECTION(inittext_align)				\
	. = ALIGN(inittext_align);					\
	.init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {		\
		_sinittext = .;						\
		INIT_TEXT						\
		_einittext = .;						\
	}

#define INIT_DATA_SECTION(initsetup_align)				\
	.init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {		\
		INIT_DATA						\
		INIT_SETUP(initsetup_align)				\
		INIT_CALLS						\
		CON_INITCALL						\
		INIT_RAM_FS						\
	}

#define BSS_SECTION(sbss_align, bss_align, stop_align)			\
	. = ALIGN(sbss_align);						\
	__bss_start = .;						\
	SBSS(sbss_align)						\
	BSS(bss_align)							\
	. = ALIGN(stop_align);						\
	__bss_stop = .;