summaryrefslogtreecommitdiff
path: root/include/elf.h
blob: e7c51986df84d986e1b1ac4dd70cd29d4574b77d (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
/* SPDX-License-Identifier: BSD-3-Clause */
/*
 * Copyright (c) 1995, 1996, 2001, 2002
 * Erik Theisen.  All rights reserved.
 */

/* This is the ELF ABI header file formerly known as "elf_abi.h" */

#ifndef _ELF_H
#define _ELF_H

#ifndef __ASSEMBLER__
#include "compiler.h"

/* This version doesn't work for 64-bit ABIs - Erik */

/* These typedefs need to be handled better */
typedef uint32_t	Elf32_Addr;	/* Unsigned program address */
typedef uint32_t	Elf32_Off;	/* Unsigned file offset */
typedef int32_t		Elf32_Sword;	/* Signed large integer */
typedef uint32_t	Elf32_Word;	/* Unsigned large integer */
typedef uint16_t	Elf32_Half;	/* Unsigned medium integer */

/* 64-bit ELF base types */
typedef uint64_t	Elf64_Addr;
typedef uint16_t	Elf64_Half;
typedef int16_t		Elf64_SHalf;
typedef uint64_t	Elf64_Off;
typedef int32_t		Elf64_Sword;
typedef uint32_t	Elf64_Word;
typedef uint64_t	Elf64_Xword;
typedef int64_t		Elf64_Sxword;

/* e_ident[] identification indexes */
#define EI_MAG0		0		/* file ID */
#define EI_MAG1		1		/* file ID */
#define EI_MAG2		2		/* file ID */
#define EI_MAG3		3		/* file ID */
#define EI_CLASS	4		/* file class */
#define EI_DATA		5		/* data encoding */
#define EI_VERSION	6		/* ELF header version */
#define EI_OSABI	7		/* OS/ABI specific ELF extensions */
#define EI_ABIVERSION	8		/* ABI target version */
#define EI_PAD		9		/* start of pad bytes */
#define EI_NIDENT	16		/* Size of e_ident[] */

/* e_ident[] magic number */
#define	ELFMAG0		0x7f		/* e_ident[EI_MAG0] */
#define	ELFMAG1		'E'		/* e_ident[EI_MAG1] */
#define	ELFMAG2		'L'		/* e_ident[EI_MAG2] */
#define	ELFMAG3		'F'		/* e_ident[EI_MAG3] */
#define	ELFMAG		"\177ELF"	/* magic */
#define	SELFMAG		4		/* size of magic */

/* e_ident[] file class */
#define	ELFCLASSNONE	0		/* invalid */
#define	ELFCLASS32	1		/* 32-bit objs */
#define	ELFCLASS64	2		/* 64-bit objs */
#define	ELFCLASSNUM	3		/* number of classes */

/* e_ident[] data encoding */
#define ELFDATANONE	0		/* invalid */
#define ELFDATA2LSB	1		/* Little-Endian */
#define ELFDATA2MSB	2		/* Big-Endian */
#define ELFDATANUM	3		/* number of data encode defines */

/* e_ident[] OS/ABI specific ELF extensions */
#define ELFOSABI_NONE		0	/* No extension specified */
#define ELFOSABI_HPUX		1	/* Hewlett-Packard HP-UX */
#define ELFOSABI_NETBSD		2	/* NetBSD */
#define ELFOSABI_LINUX		3	/* Linux */
#define ELFOSABI_SOLARIS	6	/* Sun Solaris */
#define ELFOSABI_AIX		7	/* AIX */
#define ELFOSABI_IRIX		8	/* IRIX */
#define ELFOSABI_FREEBSD	9	/* FreeBSD */
#define ELFOSABI_TRU64		10	/* Compaq TRU64 UNIX */
#define ELFOSABI_MODESTO	11	/* Novell Modesto */
#define ELFOSABI_OPENBSD	12	/* OpenBSD */
/* 64-255 Architecture-specific value range */

/* e_ident[] ABI Version */
#define ELFABIVERSION		0

/* e_ident */
#define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \
		      (ehdr).e_ident[EI_MAG1] == ELFMAG1 && \
		      (ehdr).e_ident[EI_MAG2] == ELFMAG2 && \
		      (ehdr).e_ident[EI_MAG3] == ELFMAG3)

/* ELF Header */
typedef struct {
	unsigned char	e_ident[EI_NIDENT]; /* ELF Identification */
	Elf32_Half	e_type;		/* object file type */
	Elf32_Half	e_machine;	/* machine */
	Elf32_Word	e_version;	/* object file version */
	Elf32_Addr	e_entry;	/* virtual entry point */
	Elf32_Off	e_phoff;	/* program header table offset */
	Elf32_Off	e_shoff;	/* section header table offset */
	Elf32_Word	e_flags;	/* processor-specific flags */
	Elf32_Half	e_ehsize;	/* ELF header size */
	Elf32_Half	e_phentsize;	/* program header entry size */
	Elf32_Half	e_phnum;	/* number of program header entries */
	Elf32_Half	e_shentsize;	/* section header entry size */
	Elf32_Half	e_shnum;	/* number of section header entries */
	Elf32_Half	e_shstrndx;	/* section header table's "section
					   header string table" entry offset */
} Elf32_Ehdr;

typedef struct {
	unsigned char	e_ident[EI_NIDENT]; /* ELF Identification */
	Elf64_Half	e_type;		/* object file type */
	Elf64_Half	e_machine;	/* machine */
	Elf64_Word	e_version;	/* object file version */
	Elf64_Addr	e_entry;	/* virtual entry point */
	Elf64_Off	e_phoff;	/* program header table offset */
	Elf64_Off	e_shoff;	/* section header table offset */
	Elf64_Word	e_flags;	/* processor-specific flags */
	Elf64_Half	e_ehsize;	/* ELF header size */
	Elf64_Half	e_phentsize;	/* program header entry size */
	Elf64_Half	e_phnum;	/* number of program header entries */
	Elf64_Half	e_shentsize;	/* section header entry size */
	Elf64_Half	e_shnum;	/* number of section header entries */
	Elf64_Half	e_shstrndx;	/* section header table's "section
					   header string table" entry offset */
} Elf64_Ehdr;

/* e_type */
#define ET_NONE		0		/* No file type */
#define ET_REL		1		/* relocatable file */
#define ET_EXEC		2		/* executable file */
#define ET_DYN		3		/* shared object file */
#define ET_CORE		4		/* core file */
#define ET_NUM		5		/* number of types */
#define ET_LOOS		0xfe00		/* reserved range for operating */
#define ET_HIOS		0xfeff		/* system specific e_type */
#define ET_LOPROC	0xff00		/* reserved range for processor */
#define ET_HIPROC	0xffff		/* specific e_type */

/* e_machine */
#define EM_NONE		0		/* No Machine */
#define EM_M32		1		/* AT&T WE 32100 */
#define EM_SPARC	2		/* SPARC */
#define EM_386		3		/* Intel 80386 */
#define EM_68K		4		/* Motorola 68000 */
#define EM_88K		5		/* Motorola 88000 */
#if 0
#define EM_486		6		/* RESERVED - was Intel 80486 */
#endif
#define EM_860		7		/* Intel 80860 */
#define EM_MIPS		8		/* MIPS R3000 Big-Endian only */
#define EM_S370		9		/* IBM System/370 Processor */
#define EM_MIPS_RS4_BE	10		/* MIPS R4000 Big-Endian */
#if 0
#define EM_SPARC64	11		/* RESERVED - was SPARC v9
					     64-bit unoffical */
#endif
/* RESERVED 11-14 for future use */
#define EM_PARISC	15		/* HPPA */
/* RESERVED 16 for future use */
#define EM_VPP500	17		/* Fujitsu VPP500 */
#define EM_SPARC32PLUS	18		/* Enhanced instruction set SPARC */
#define EM_960		19		/* Intel 80960 */
#define EM_PPC		20		/* PowerPC */
#define EM_PPC64	21		/* 64-bit PowerPC */
#define EM_S390		22		/* IBM System/390 Processor */
/* RESERVED 23-35 for future use */
#define EM_V800		36		/* NEC V800 */
#define EM_FR20		37		/* Fujitsu FR20 */
#define EM_RH32		38		/* TRW RH-32 */
#define EM_RCE		39		/* Motorola RCE */
#define EM_ARM		40		/* Advanced Risc Machines ARM */
#define EM_ALPHA	41		/* Digital Alpha */
#define EM_SH		42		/* Hitachi SH */
#define EM_SPARCV9	43		/* SPARC Version 9 */
#define EM_TRICORE	44		/* Siemens TriCore embedded processor */
#define EM_ARC		45		/* Argonaut RISC Core */
#define EM_H8_300	46		/* Hitachi H8/300 */
#define EM_H8_300H	47		/* Hitachi H8/300H */
#define EM_H8S		48		/* Hitachi H8S */
#define EM_H8_500	49		/* Hitachi H8/500 */
#define EM_IA_64	50		/* Intel Merced */
#define EM_MIPS_X	51		/* Stanford MIPS-X */
#define EM_COLDFIRE	52		/* Motorola Coldfire */
#define EM_68HC12	53		/* Motorola M68HC12 */
#define EM_MMA		54		/* Fujitsu MMA Multimedia Accelerator*/
#define EM_PCP		55		/* Siemens PCP */
#define EM_NCPU		56		/* Sony nCPU embeeded RISC */
#define EM_NDR1		57		/* Denso NDR1 microprocessor */
#define EM_STARCORE	58		/* Motorola Start*Core processor */
#define EM_ME16		59		/* Toyota ME16 processor */
#define EM_ST100	60		/* STMicroelectronic ST100 processor */
#define EM_TINYJ	61		/* Advanced Logic Corp. Tinyj emb.fam*/
#define EM_X86_64	62		/* AMD x86-64 */
#define EM_PDSP		63		/* Sony DSP Processor */
/* RESERVED 64,65 for future use */
#define EM_FX66		66		/* Siemens FX66 microcontroller */
#define EM_ST9PLUS	67		/* STMicroelectronics ST9+ 8/16 mc */
#define EM_ST7		68		/* STmicroelectronics ST7 8 bit mc */
#define EM_68HC16	69		/* Motorola MC68HC16 microcontroller */
#define EM_68HC11	70		/* Motorola MC68HC11 microcontroller */
#define EM_68HC08	71		/* Motorola MC68HC08 microcontroller */
#define EM_68HC05	72		/* Motorola MC68HC05 microcontroller */
#define EM_SVX		73		/* Silicon Graphics SVx */
#define EM_ST19		74		/* STMicroelectronics ST19 8 bit mc */
#define EM_VAX		75		/* Digital VAX */
#define EM_CHRIS	76		/* Axis Communications embedded proc. */
#define EM_JAVELIN	77		/* Infineon Technologies emb. proc. */
#define EM_FIREPATH	78		/* Element 14 64-bit DSP Processor */
#define EM_ZSP		79		/* LSI Logic 16-bit DSP Processor */
#define EM_MMIX		80		/* Donald Knuth's edu 64-bit proc. */
#define EM_HUANY	81		/* Harvard University mach-indep objs */
#define EM_PRISM	82		/* SiTera Prism */
#define EM_AVR		83		/* Atmel AVR 8-bit microcontroller */
#define EM_FR30		84		/* Fujitsu FR30 */
#define EM_D10V		85		/* Mitsubishi DV10V */
#define EM_D30V		86		/* Mitsubishi DV30V */
#define EM_V850		87		/* NEC v850 */
#define EM_M32R		88		/* Mitsubishi M32R */
#define EM_MN10300	89		/* Matsushita MN10200 */
#define EM_MN10200	90		/* Matsushita MN10200 */
#define EM_PJ		91		/* picoJava */
#define EM_NUM		92		/* number of machine types */

/* Version */
#define EV_NONE		0		/* Invalid */
#define EV_CURRENT	1		/* Current */
#define EV_NUM		2		/* number of versions */

/* Section Header */
typedef struct {
	Elf32_Word	sh_name;	/* name - index into section header
					   string table section */
	Elf32_Word	sh_type;	/* type */
	Elf32_Word	sh_flags;	/* flags */
	Elf32_Addr	sh_addr;	/* address */
	Elf32_Off	sh_offset;	/* file offset */
	Elf32_Word	sh_size;	/* section size */
	Elf32_Word	sh_link;	/* section header table index link */
	Elf32_Word	sh_info;	/* extra information */
	Elf32_Word	sh_addralign;	/* address alignment */
	Elf32_Word	sh_entsize;	/* section entry size */
} Elf32_Shdr;

typedef struct {
	Elf64_Word	sh_name;	/* name - index into section header
					   string table section */
	Elf64_Word	sh_type;	/* type */
	Elf64_Xword	sh_flags;	/* flags */
	Elf64_Addr	sh_addr;	/* address */
	Elf64_Off	sh_offset;	/* file offset */
	Elf64_Xword	sh_size;	/* section size */
	Elf64_Word	sh_link;	/* section header table index link */
	Elf64_Word	sh_info;	/* extra information */
	Elf64_Xword	sh_addralign;	/* address alignment */
	Elf64_Xword	sh_entsize;	/* section entry size */
} Elf64_Shdr;

/* Special Section Indexes */
#define SHN_UNDEF	0		/* undefined */
#define SHN_LORESERVE	0xff00		/* lower bounds of reserved indexes */
#define SHN_LOPROC	0xff00		/* reserved range for processor */
#define SHN_HIPROC	0xff1f		/* specific section indexes */
#define SHN_LOOS	0xff20		/* reserved range for operating */
#define SHN_HIOS	0xff3f		/* specific semantics */
#define SHN_ABS		0xfff1		/* absolute value */
#define SHN_COMMON	0xfff2		/* common symbol */
#define SHN_XINDEX	0xffff		/* Index is an extra table */
#define SHN_HIRESERVE	0xffff		/* upper bounds of reserved indexes */

/* sh_type */
#define SHT_NULL	0		/* inactive */
#define SHT_PROGBITS	1		/* program defined information */
#define SHT_SYMTAB	2		/* symbol table section */
#define SHT_STRTAB	3		/* string table section */
#define SHT_RELA	4		/* relocation section with addends*/
#define SHT_HASH	5		/* symbol hash table section */
#define SHT_DYNAMIC	6		/* dynamic section */
#define SHT_NOTE	7		/* note section */
#define SHT_NOBITS	8		/* no space section */
#define SHT_REL		9		/* relation section without addends */
#define SHT_SHLIB	10		/* reserved - purpose unknown */
#define SHT_DYNSYM	11		/* dynamic symbol table section */
#define SHT_INIT_ARRAY	14		/* Array of constructors */
#define SHT_FINI_ARRAY	15		/* Array of destructors */
#define SHT_PREINIT_ARRAY 16		/* Array of pre-constructors */
#define SHT_GROUP	17		/* Section group */
#define SHT_SYMTAB_SHNDX 18		/* Extended section indeces */
#define SHT_NUM		19		/* number of section types */
#define SHT_LOOS	0x60000000	/* Start OS-specific */
#define SHT_HIOS	0x6fffffff	/* End OS-specific */
#define SHT_LOPROC	0x70000000	/* reserved range for processor */
#define SHT_HIPROC	0x7fffffff	/* specific section header types */
#define SHT_LOUSER	0x80000000	/* reserved range for application */
#define SHT_HIUSER	0xffffffff	/* specific indexes */

/* Section names */
#define ELF_BSS		".bss"		/* uninitialized data */
#define ELF_COMMENT	".comment"	/* version control information */
#define ELF_DATA	".data"		/* initialized data */
#define ELF_DATA1	".data1"	/* initialized data */
#define ELF_DEBUG	".debug"	/* debug */
#define ELF_DYNAMIC	".dynamic"	/* dynamic linking information */
#define ELF_DYNSTR	".dynstr"	/* dynamic string table */
#define ELF_DYNSYM	".dynsym"	/* dynamic symbol table */
#define ELF_FINI	".fini"		/* termination code */
#define ELF_FINI_ARRAY	".fini_array"	/* Array of destructors */
#define ELF_GOT		".got"		/* global offset table */
#define ELF_HASH	".hash"		/* symbol hash table */
#define ELF_INIT	".init"		/* initialization code */
#define ELF_INIT_ARRAY	".init_array"	/* Array of constuctors */
#define ELF_INTERP	".interp"	/* Pathname of program interpreter */
#define ELF_LINE	".line"		/* Symbolic line numnber information */
#define ELF_NOTE	".note"		/* Contains note section */
#define ELF_PLT		".plt"		/* Procedure linkage table */
#define ELF_PREINIT_ARRAY ".preinit_array" /* Array of pre-constructors */
#define ELF_REL_DATA	".rel.data"	/* relocation data */
#define ELF_REL_FINI	".rel.fini"	/* relocation termination code */
#define ELF_REL_INIT	".rel.init"	/* relocation initialization code */
#define ELF_REL_DYN	".rel.dyn"	/* relocaltion dynamic link info */
#define ELF_REL_RODATA	".rel.rodata"	/* relocation read-only data */
#define ELF_REL_TEXT	".rel.text"	/* relocation code */
#define ELF_RODATA	".rodata"	/* read-only data */
#define ELF_RODATA1	".rodata1"	/* read-only data */
#define ELF_SHSTRTAB	".shstrtab"	/* section header string table */
#define ELF_STRTAB	".strtab"	/* string table */
#define ELF_SYMTAB	".symtab"	/* symbol table */
#define ELF_SYMTAB_SHNDX ".symtab_shndx"/* symbol table section index */
#define ELF_TBSS	".tbss"		/* thread local uninit data */
#define ELF_TDATA	".tdata"	/* thread local init data */
#define ELF_TDATA1	".tdata1"	/* thread local init data */
#define ELF_TEXT	".text"		/* code */

/* Section Attribute Flags - sh_flags */
#define SHF_WRITE	0x1		/* Writable */
#define SHF_ALLOC	0x2		/* occupies memory */
#define SHF_EXECINSTR	0x4		/* executable */
#define SHF_MERGE	0x10		/* Might be merged */
#define SHF_STRINGS	0x20		/* Contains NULL terminated strings */
#define SHF_INFO_LINK	0x40		/* sh_info contains SHT index */
#define SHF_LINK_ORDER	0x80		/* Preserve order after combining*/
#define SHF_OS_NONCONFORMING 0x100	/* Non-standard OS specific handling */
#define SHF_GROUP	0x200		/* Member of section group */
#define SHF_TLS		0x400		/* Thread local storage */
#define SHF_MASKOS	0x0ff00000	/* OS specific */
#define SHF_MASKPROC	0xf0000000	/* reserved bits for processor */
					/* specific section attributes */

/* Section Group Flags */
#define GRP_COMDAT	0x1		/* COMDAT group */
#define GRP_MASKOS	0x0ff00000	/* Mask OS specific flags */
#define GRP_MASKPROC	0xf0000000	/* Mask processor specific flags */

/* Symbol Table Entry */
typedef struct {
	Elf32_Word	st_name;	/* name - index into string table */
	Elf32_Addr	st_value;	/* symbol value */
	Elf32_Word	st_size;	/* symbol size */
	unsigned char	st_info;	/* type and binding */
	unsigned char	st_other;	/* 0 - no defined meaning */
	Elf32_Half	st_shndx;	/* section header index */
} Elf32_Sym;

/* Symbol table index */
#define STN_UNDEF	0		/* undefined */

/* Extract symbol info - st_info */
#define ELF32_ST_BIND(x)	((x) >> 4)
#define ELF32_ST_TYPE(x)	(((unsigned int) x) & 0xf)
#define ELF32_ST_INFO(b,t)	(((b) << 4) + ((t) & 0xf))
#define ELF32_ST_VISIBILITY(x)	((x) & 0x3)

/* Symbol Binding - ELF32_ST_BIND - st_info */
#define STB_LOCAL	0		/* Local symbol */
#define STB_GLOBAL	1		/* Global symbol */
#define STB_WEAK	2		/* like global - lower precedence */
#define STB_NUM		3		/* number of symbol bindings */
#define STB_LOOS	10		/* reserved range for operating */
#define STB_HIOS	12		/* system specific symbol bindings */
#define STB_LOPROC	13		/* reserved range for processor */
#define STB_HIPROC	15		/* specific symbol bindings */

/* Symbol type - ELF32_ST_TYPE - st_info */
#define STT_NOTYPE	0		/* not specified */
#define STT_OBJECT	1		/* data object */
#define STT_FUNC	2		/* function */
#define STT_SECTION	3		/* section */
#define STT_FILE	4		/* file */
#define STT_NUM		5		/* number of symbol types */
#define STT_TLS		6		/* Thread local storage symbol */
#define STT_LOOS	10		/* reserved range for operating */
#define STT_HIOS	12		/* system specific symbol types */
#define STT_LOPROC	13		/* reserved range for processor */
#define STT_HIPROC	15		/* specific symbol types */

/* Symbol visibility - ELF32_ST_VISIBILITY - st_other */
#define STV_DEFAULT	0		/* Normal visibility rules */
#define STV_INTERNAL	1		/* Processor specific hidden class */
#define STV_HIDDEN	2		/* Symbol unavailable in other mods */
#define STV_PROTECTED	3		/* Not preemptible, not exported */

/* Relocation entry with implicit addend */
typedef struct {
	Elf32_Addr	r_offset;	/* offset of relocation */
	Elf32_Word	r_info;		/* symbol table index and type */
} Elf32_Rel;

/* Relocation entry with explicit addend */
typedef struct {
	Elf32_Addr	r_offset;	/* offset of relocation */
	Elf32_Word	r_info;		/* symbol table index and type */
	Elf32_Sword	r_addend;
} Elf32_Rela;

typedef struct {
	Elf64_Addr r_offset;	/* Location at which to apply the action */
	Elf64_Xword r_info;	/* index and type of relocation */
} Elf64_Rel;

typedef struct {
	Elf64_Addr r_offset;	/* Location at which to apply the action */
	Elf64_Xword r_info;	/* index and type of relocation */
	Elf64_Sxword r_addend;	/* Constant addend used to compute value */
} Elf64_Rela;

/* Extract relocation info - r_info */
#define ELF32_R_SYM(i)		((i) >> 8)
#define ELF32_R_TYPE(i)		((unsigned char) (i))
#define ELF32_R_INFO(s,t)	(((s) << 8) + (unsigned char)(t))

/* Program Header */
typedef struct {
	Elf32_Word	p_type;		/* segment type */
	Elf32_Off	p_offset;	/* segment offset */
	Elf32_Addr	p_vaddr;	/* virtual address of segment */
	Elf32_Addr	p_paddr;	/* physical address of segment */
	Elf32_Word	p_filesz;	/* number of bytes in file for seg */
	Elf32_Word	p_memsz;	/* number of bytes in mem. for seg */
	Elf32_Word	p_flags;	/* flags */
	Elf32_Word	p_align;	/* memory alignment */
} Elf32_Phdr;

typedef struct {
	Elf64_Word	p_type;		/* segment type */
	Elf64_Word	p_flags;	/* flags */
	Elf64_Off	p_offset;	/* segment offset */
	Elf64_Addr	p_vaddr;	/* virtual address of segment */
	Elf64_Addr	p_paddr;	/* physical address of segment */
	Elf64_Xword	p_filesz;	/* number of bytes in file for seg */
	Elf64_Xword	p_memsz;	/* number of bytes in mem. for seg */
	Elf64_Xword	p_align;	/* memory alignment */
} Elf64_Phdr;

/* Segment types - p_type */
#define PT_NULL		0		/* unused */
#define PT_LOAD		1		/* loadable segment */
#define PT_DYNAMIC	2		/* dynamic linking section */
#define PT_INTERP	3		/* the RTLD */
#define PT_NOTE		4		/* auxiliary information */
#define PT_SHLIB	5		/* reserved - purpose undefined */
#define PT_PHDR		6		/* program header */
#define PT_TLS		7		/* Thread local storage template */
#define PT_NUM		8		/* Number of segment types */
#define PT_LOOS		0x60000000	/* reserved range for operating */
#define PT_HIOS		0x6fffffff	/* system specific segment types */
#define PT_LOPROC	0x70000000	/* reserved range for processor */
#define PT_HIPROC	0x7fffffff	/* specific segment types */

/* Segment flags - p_flags */
#define PF_X		0x1		/* Executable */
#define PF_W		0x2		/* Writable */
#define PF_R		0x4		/* Readable */
#define PF_MASKOS	0x0ff00000	/* OS specific segment flags */
#define PF_MASKPROC	0xf0000000	/* reserved bits for processor */
					/* specific segment flags */
/* Dynamic structure */
typedef struct {
	Elf32_Sword	d_tag;		/* controls meaning of d_val */
	union {
		Elf32_Word	d_val;	/* Multiple meanings - see d_tag */
		Elf32_Addr	d_ptr;	/* program virtual address */
	} d_un;
} Elf32_Dyn;

extern Elf32_Dyn	_DYNAMIC[];

typedef struct {
	Elf64_Sxword d_tag;		/* entry tag value */
	union {
		Elf64_Xword d_val;
		Elf64_Addr d_ptr;
	} d_un;
} Elf64_Dyn;

#define ELF64_R_SYM(i)			((i) >> 32)
#define ELF64_R_TYPE(i)			((i) & 0xffffffff)

/* Dynamic Array Tags - d_tag */
#define DT_NULL		0		/* marks end of _DYNAMIC array */
#define DT_NEEDED	1		/* string table offset of needed lib */
#define DT_PLTRELSZ	2		/* size of relocation entries in PLT */
#define DT_PLTGOT	3		/* address PLT/GOT */
#define DT_HASH		4		/* address of symbol hash table */
#define DT_STRTAB	5		/* address of string table */
#define DT_SYMTAB	6		/* address of symbol table */
#define DT_RELA		7		/* address of relocation table */
#define DT_RELASZ	8		/* size of relocation table */
#define DT_RELAENT	9		/* size of relocation entry */
#define DT_STRSZ	10		/* size of string table */
#define DT_SYMENT	11		/* size of symbol table entry */
#define DT_INIT		12		/* address of initialization func */
#define DT_FINI		13		/* address of termination function */
#define DT_SONAME	14		/* string table offset of shared obj */
#define DT_RPATH	15		/* string table offset of library
					   search path */
#define DT_SYMBOLIC	16		/* start sym search in shared obj */
#define DT_REL		17		/* address of rel. tbl. w addends */
#define DT_RELSZ	18		/* size of DT_REL relocation table */
#define DT_RELENT	19		/* size of DT_REL relocation entry */
#define DT_PLTREL	20		/* PLT referenced relocation entry */
#define DT_DEBUG	21		/* bugger */
#define DT_TEXTREL	22		/* Allow rel. mod. to unwritable seg */
#define DT_JMPREL	23		/* add. of PLT's relocation entries */
#define DT_BIND_NOW	24		/* Process relocations of object */
#define DT_INIT_ARRAY	25		/* Array with addresses of init fct */
#define DT_FINI_ARRAY	26		/* Array with addresses of fini fct */
#define DT_INIT_ARRAYSZ	27		/* Size in bytes of DT_INIT_ARRAY */
#define DT_FINI_ARRAYSZ	28		/* Size in bytes of DT_FINI_ARRAY */
#define DT_RUNPATH	29		/* Library search path */
#define DT_FLAGS	30		/* Flags for the object being loaded */
#define DT_ENCODING	32		/* Start of encoded range */
#define DT_PREINIT_ARRAY 32		/* Array with addresses of preinit fct*/
#define DT_PREINIT_ARRAYSZ 33		/* size in bytes of DT_PREINIT_ARRAY */
#define DT_NUM		34		/* Number used */
#define DT_LOOS		0x60000000	/* reserved range for OS */
#define DT_HIOS		0x6fffffff	/* specific dynamic array tags */
#define DT_LOPROC	0x70000000	/* reserved range for processor */
#define DT_HIPROC	0x7fffffff	/* specific dynamic array tags */

/* Dynamic Tag Flags - d_un.d_val */
#define DF_ORIGIN	0x01		/* Object may use DF_ORIGIN */
#define DF_SYMBOLIC	0x02		/* Symbol resolutions starts here */
#define DF_TEXTREL	0x04		/* Object contains text relocations */
#define DF_BIND_NOW	0x08		/* No lazy binding for this object */
#define DF_STATIC_TLS	0x10		/* Static thread local storage */

/* Standard ELF hashing function */
unsigned long elf_hash(const unsigned char *name);

#define ELF_TARG_VER	1	/* The ver for which this code is intended */

#endif /* __ASSEMBLER */

/* ELF register definitions */
#define R_386_NONE	0
#define R_386_32	1
#define R_386_PC32	2
#define R_386_GOT32	3
#define R_386_PLT32	4
#define R_386_COPY	5
#define R_386_GLOB_DAT	6
#define R_386_JMP_SLOT	7
#define R_386_RELATIVE	8
#define R_386_GOTOFF	9
#define R_386_GOTPC	10
#define R_386_NUM	11

/* x86-64 relocation types */
#define R_X86_64_NONE		0	/* No reloc */
#define R_X86_64_64		1	/* Direct 64 bit  */
#define R_X86_64_PC32		2	/* PC relative 32 bit signed */
#define R_X86_64_GOT32		3	/* 32 bit GOT entry */
#define R_X86_64_PLT32		4	/* 32 bit PLT address */
#define R_X86_64_COPY		5	/* Copy symbol at runtime */
#define R_X86_64_GLOB_DAT	6	/* Create GOT entry */
#define R_X86_64_JUMP_SLOT	7	/* Create PLT entry */
#define R_X86_64_RELATIVE	8	/* Adjust by program base */
/* 32 bit signed pc relative offset to GOT */
#define R_X86_64_GOTPCREL	9
#define R_X86_64_32		10	/* Direct 32 bit zero extended */
#define R_X86_64_32S		11	/* Direct 32 bit sign extended */
#define R_X86_64_16		12	/* Direct 16 bit zero extended */
#define R_X86_64_PC16		13	/* 16 bit sign extended pc relative */
#define R_X86_64_8		14	/* Direct 8 bit sign extended  */
#define R_X86_64_PC8		15	/* 8 bit sign extended pc relative */

#define R_X86_64_NUM		16

/*
 * XXX - PowerPC defines really don't belong in here,
 * but we'll put them in for simplicity.
 */

/* Values for Elf32/64_Ehdr.e_flags */
#define EF_PPC_EMB		0x80000000	/* PowerPC embedded flag */

#define EF_PPC64_ELFV1_ABI	0x00000001
#define EF_PPC64_ELFV2_ABI	0x00000002

/* Cygnus local bits below */
#define EF_PPC_RELOCATABLE	0x00010000	/* PowerPC -mrelocatable flag*/
#define EF_PPC_RELOCATABLE_LIB	0x00008000	/* PowerPC -mrelocatable-lib
						   flag */

/* PowerPC relocations defined by the ABIs */
#define R_PPC_NONE		0
#define R_PPC_ADDR32		1	/* 32bit absolute address */
#define R_PPC_ADDR24		2	/* 26bit address, 2 bits ignored */
#define R_PPC_ADDR16		3	/* 16bit absolute address */
#define R_PPC_ADDR16_LO		4	/* lower 16bit of absolute address */
#define R_PPC_ADDR16_HI		5	/* high 16bit of absolute address */
#define R_PPC_ADDR16_HA		6	/* adjusted high 16bit */
#define R_PPC_ADDR14		7	/* 16bit address, 2 bits ignored */
#define R_PPC_ADDR14_BRTAKEN	8
#define R_PPC_ADDR14_BRNTAKEN	9
#define R_PPC_REL24		10	/* PC relative 26 bit */
#define R_PPC_REL14		11	/* PC relative 16 bit */
#define R_PPC_REL14_BRTAKEN	12
#define R_PPC_REL14_BRNTAKEN	13
#define R_PPC_GOT16		14
#define R_PPC_GOT16_LO		15
#define R_PPC_GOT16_HI		16
#define R_PPC_GOT16_HA		17
#define R_PPC_PLTREL24		18
#define R_PPC_COPY		19
#define R_PPC_GLOB_DAT		20
#define R_PPC_JMP_SLOT		21
#define R_PPC_RELATIVE		22
#define R_PPC_LOCAL24PC		23
#define R_PPC_UADDR32		24
#define R_PPC_UADDR16		25
#define R_PPC_REL32		26
#define R_PPC_PLT32		27
#define R_PPC_PLTREL32		28
#define R_PPC_PLT16_LO		29
#define R_PPC_PLT16_HI		30
#define R_PPC_PLT16_HA		31
#define R_PPC_SDAREL16		32
#define R_PPC_SECTOFF		33
#define R_PPC_SECTOFF_LO	34
#define R_PPC_SECTOFF_HI	35
#define R_PPC_SECTOFF_HA	36
/* Keep this the last entry */
#define R_PPC_NUM		37

/*
 * The remaining relocs are from the Embedded ELF ABI, and are not
 * in the SVR4 ELF ABI.
 */
#define R_PPC_EMB_NADDR32	101
#define R_PPC_EMB_NADDR16	102
#define R_PPC_EMB_NADDR16_LO	103
#define R_PPC_EMB_NADDR16_HI	104
#define R_PPC_EMB_NADDR16_HA	105
#define R_PPC_EMB_SDAI16	106
#define R_PPC_EMB_SDA2I16	107
#define R_PPC_EMB_SDA2REL	108
#define R_PPC_EMB_SDA21		109	/* 16 bit offset in SDA */
#define R_PPC_EMB_MRKREF	110
#define R_PPC_EMB_RELSEC16	111
#define R_PPC_EMB_RELST_LO	112
#define R_PPC_EMB_RELST_HI	113
#define R_PPC_EMB_RELST_HA	114
#define R_PPC_EMB_BIT_FLD	115
#define R_PPC_EMB_RELSDA	116	/* 16 bit relative offset in SDA */

/* Diab tool relocations */
#define R_PPC_DIAB_SDA21_LO	180	/* like EMB_SDA21, but lower 16 bit */
#define R_PPC_DIAB_SDA21_HI	181	/* like EMB_SDA21, but high 16 bit */
#define R_PPC_DIAB_SDA21_HA	182	/* like EMB_SDA21, adjusted high 16 */
#define R_PPC_DIAB_RELSDA_LO	183	/* like EMB_RELSDA, but lower 16 bit */
#define R_PPC_DIAB_RELSDA_HI	184	/* like EMB_RELSDA, but high 16 bit */
#define R_PPC_DIAB_RELSDA_HA	185	/* like EMB_RELSDA, adjusted high 16 */

/*
 * This is a phony reloc to handle any old fashioned TOC16 references
 * that may still be in object files.
 */
#define R_PPC_TOC16		255

 /* ARM relocs */
#define R_ARM_NONE		0	/* No reloc */
#define R_ARM_RELATIVE		23	/* Adjust by program base */

/* AArch64 relocs */
#define R_AARCH64_NONE		0	/* No relocation */
#define R_AARCH64_RELATIVE	1027	/* Adjust by program base */

/* RISC-V relocations */
#define R_RISCV_32		1
#define R_RISCV_64		2
#define R_RISCV_RELATIVE	3

#ifndef __ASSEMBLER__
int valid_elf_image(unsigned long addr);
unsigned long load_elf64_image_phdr(unsigned long addr);
unsigned long load_elf64_image_shdr(unsigned long addr);
unsigned long load_elf_image_phdr(unsigned long addr);
unsigned long load_elf_image_shdr(unsigned long addr);
#endif

#endif /* _ELF_H */