xref: /openbmc/u-boot/include/elf.h (revision b71d9e8b)
1 /* SPDX-License-Identifier: BSD-3-Clause */
2 /*
3  * Copyright (c) 1995, 1996, 2001, 2002
4  * Erik Theisen.  All rights reserved.
5  */
6 
7 /* This is the ELF ABI header file formerly known as "elf_abi.h" */
8 
9 #ifndef _ELF_H
10 #define _ELF_H
11 
12 #ifndef __ASSEMBLER__
13 #include "compiler.h"
14 
15 /* This version doesn't work for 64-bit ABIs - Erik */
16 
17 /* These typedefs need to be handled better */
18 typedef uint32_t	Elf32_Addr;	/* Unsigned program address */
19 typedef uint32_t	Elf32_Off;	/* Unsigned file offset */
20 typedef int32_t		Elf32_Sword;	/* Signed large integer */
21 typedef uint32_t	Elf32_Word;	/* Unsigned large integer */
22 typedef uint16_t	Elf32_Half;	/* Unsigned medium integer */
23 
24 /* 64-bit ELF base types */
25 typedef uint64_t	Elf64_Addr;
26 typedef uint16_t	Elf64_Half;
27 typedef int16_t		Elf64_SHalf;
28 typedef uint64_t	Elf64_Off;
29 typedef int32_t		Elf64_Sword;
30 typedef uint32_t	Elf64_Word;
31 typedef uint64_t	Elf64_Xword;
32 typedef int64_t		Elf64_Sxword;
33 
34 /* e_ident[] identification indexes */
35 #define EI_MAG0		0		/* file ID */
36 #define EI_MAG1		1		/* file ID */
37 #define EI_MAG2		2		/* file ID */
38 #define EI_MAG3		3		/* file ID */
39 #define EI_CLASS	4		/* file class */
40 #define EI_DATA		5		/* data encoding */
41 #define EI_VERSION	6		/* ELF header version */
42 #define EI_OSABI	7		/* OS/ABI specific ELF extensions */
43 #define EI_ABIVERSION	8		/* ABI target version */
44 #define EI_PAD		9		/* start of pad bytes */
45 #define EI_NIDENT	16		/* Size of e_ident[] */
46 
47 /* e_ident[] magic number */
48 #define	ELFMAG0		0x7f		/* e_ident[EI_MAG0] */
49 #define	ELFMAG1		'E'		/* e_ident[EI_MAG1] */
50 #define	ELFMAG2		'L'		/* e_ident[EI_MAG2] */
51 #define	ELFMAG3		'F'		/* e_ident[EI_MAG3] */
52 #define	ELFMAG		"\177ELF"	/* magic */
53 #define	SELFMAG		4		/* size of magic */
54 
55 /* e_ident[] file class */
56 #define	ELFCLASSNONE	0		/* invalid */
57 #define	ELFCLASS32	1		/* 32-bit objs */
58 #define	ELFCLASS64	2		/* 64-bit objs */
59 #define	ELFCLASSNUM	3		/* number of classes */
60 
61 /* e_ident[] data encoding */
62 #define ELFDATANONE	0		/* invalid */
63 #define ELFDATA2LSB	1		/* Little-Endian */
64 #define ELFDATA2MSB	2		/* Big-Endian */
65 #define ELFDATANUM	3		/* number of data encode defines */
66 
67 /* e_ident[] OS/ABI specific ELF extensions */
68 #define ELFOSABI_NONE		0	/* No extension specified */
69 #define ELFOSABI_HPUX		1	/* Hewlett-Packard HP-UX */
70 #define ELFOSABI_NETBSD		2	/* NetBSD */
71 #define ELFOSABI_LINUX		3	/* Linux */
72 #define ELFOSABI_SOLARIS	6	/* Sun Solaris */
73 #define ELFOSABI_AIX		7	/* AIX */
74 #define ELFOSABI_IRIX		8	/* IRIX */
75 #define ELFOSABI_FREEBSD	9	/* FreeBSD */
76 #define ELFOSABI_TRU64		10	/* Compaq TRU64 UNIX */
77 #define ELFOSABI_MODESTO	11	/* Novell Modesto */
78 #define ELFOSABI_OPENBSD	12	/* OpenBSD */
79 /* 64-255 Architecture-specific value range */
80 
81 /* e_ident[] ABI Version */
82 #define ELFABIVERSION		0
83 
84 /* e_ident */
85 #define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \
86 		      (ehdr).e_ident[EI_MAG1] == ELFMAG1 && \
87 		      (ehdr).e_ident[EI_MAG2] == ELFMAG2 && \
88 		      (ehdr).e_ident[EI_MAG3] == ELFMAG3)
89 
90 /* ELF Header */
91 typedef struct {
92 	unsigned char	e_ident[EI_NIDENT]; /* ELF Identification */
93 	Elf32_Half	e_type;		/* object file type */
94 	Elf32_Half	e_machine;	/* machine */
95 	Elf32_Word	e_version;	/* object file version */
96 	Elf32_Addr	e_entry;	/* virtual entry point */
97 	Elf32_Off	e_phoff;	/* program header table offset */
98 	Elf32_Off	e_shoff;	/* section header table offset */
99 	Elf32_Word	e_flags;	/* processor-specific flags */
100 	Elf32_Half	e_ehsize;	/* ELF header size */
101 	Elf32_Half	e_phentsize;	/* program header entry size */
102 	Elf32_Half	e_phnum;	/* number of program header entries */
103 	Elf32_Half	e_shentsize;	/* section header entry size */
104 	Elf32_Half	e_shnum;	/* number of section header entries */
105 	Elf32_Half	e_shstrndx;	/* section header table's "section
106 					   header string table" entry offset */
107 } Elf32_Ehdr;
108 
109 typedef struct {
110 	unsigned char	e_ident[EI_NIDENT]; /* ELF Identification */
111 	Elf64_Half	e_type;		/* object file type */
112 	Elf64_Half	e_machine;	/* machine */
113 	Elf64_Word	e_version;	/* object file version */
114 	Elf64_Addr	e_entry;	/* virtual entry point */
115 	Elf64_Off	e_phoff;	/* program header table offset */
116 	Elf64_Off	e_shoff;	/* section header table offset */
117 	Elf64_Word	e_flags;	/* processor-specific flags */
118 	Elf64_Half	e_ehsize;	/* ELF header size */
119 	Elf64_Half	e_phentsize;	/* program header entry size */
120 	Elf64_Half	e_phnum;	/* number of program header entries */
121 	Elf64_Half	e_shentsize;	/* section header entry size */
122 	Elf64_Half	e_shnum;	/* number of section header entries */
123 	Elf64_Half	e_shstrndx;	/* section header table's "section
124 					   header string table" entry offset */
125 } Elf64_Ehdr;
126 
127 /* e_type */
128 #define ET_NONE		0		/* No file type */
129 #define ET_REL		1		/* relocatable file */
130 #define ET_EXEC		2		/* executable file */
131 #define ET_DYN		3		/* shared object file */
132 #define ET_CORE		4		/* core file */
133 #define ET_NUM		5		/* number of types */
134 #define ET_LOOS		0xfe00		/* reserved range for operating */
135 #define ET_HIOS		0xfeff		/* system specific e_type */
136 #define ET_LOPROC	0xff00		/* reserved range for processor */
137 #define ET_HIPROC	0xffff		/* specific e_type */
138 
139 /* e_machine */
140 #define EM_NONE		0		/* No Machine */
141 #define EM_M32		1		/* AT&T WE 32100 */
142 #define EM_SPARC	2		/* SPARC */
143 #define EM_386		3		/* Intel 80386 */
144 #define EM_68K		4		/* Motorola 68000 */
145 #define EM_88K		5		/* Motorola 88000 */
146 #if 0
147 #define EM_486		6		/* RESERVED - was Intel 80486 */
148 #endif
149 #define EM_860		7		/* Intel 80860 */
150 #define EM_MIPS		8		/* MIPS R3000 Big-Endian only */
151 #define EM_S370		9		/* IBM System/370 Processor */
152 #define EM_MIPS_RS4_BE	10		/* MIPS R4000 Big-Endian */
153 #if 0
154 #define EM_SPARC64	11		/* RESERVED - was SPARC v9
155 					     64-bit unoffical */
156 #endif
157 /* RESERVED 11-14 for future use */
158 #define EM_PARISC	15		/* HPPA */
159 /* RESERVED 16 for future use */
160 #define EM_VPP500	17		/* Fujitsu VPP500 */
161 #define EM_SPARC32PLUS	18		/* Enhanced instruction set SPARC */
162 #define EM_960		19		/* Intel 80960 */
163 #define EM_PPC		20		/* PowerPC */
164 #define EM_PPC64	21		/* 64-bit PowerPC */
165 #define EM_S390		22		/* IBM System/390 Processor */
166 /* RESERVED 23-35 for future use */
167 #define EM_V800		36		/* NEC V800 */
168 #define EM_FR20		37		/* Fujitsu FR20 */
169 #define EM_RH32		38		/* TRW RH-32 */
170 #define EM_RCE		39		/* Motorola RCE */
171 #define EM_ARM		40		/* Advanced Risc Machines ARM */
172 #define EM_ALPHA	41		/* Digital Alpha */
173 #define EM_SH		42		/* Hitachi SH */
174 #define EM_SPARCV9	43		/* SPARC Version 9 */
175 #define EM_TRICORE	44		/* Siemens TriCore embedded processor */
176 #define EM_ARC		45		/* Argonaut RISC Core */
177 #define EM_H8_300	46		/* Hitachi H8/300 */
178 #define EM_H8_300H	47		/* Hitachi H8/300H */
179 #define EM_H8S		48		/* Hitachi H8S */
180 #define EM_H8_500	49		/* Hitachi H8/500 */
181 #define EM_IA_64	50		/* Intel Merced */
182 #define EM_MIPS_X	51		/* Stanford MIPS-X */
183 #define EM_COLDFIRE	52		/* Motorola Coldfire */
184 #define EM_68HC12	53		/* Motorola M68HC12 */
185 #define EM_MMA		54		/* Fujitsu MMA Multimedia Accelerator*/
186 #define EM_PCP		55		/* Siemens PCP */
187 #define EM_NCPU		56		/* Sony nCPU embeeded RISC */
188 #define EM_NDR1		57		/* Denso NDR1 microprocessor */
189 #define EM_STARCORE	58		/* Motorola Start*Core processor */
190 #define EM_ME16		59		/* Toyota ME16 processor */
191 #define EM_ST100	60		/* STMicroelectronic ST100 processor */
192 #define EM_TINYJ	61		/* Advanced Logic Corp. Tinyj emb.fam*/
193 #define EM_X86_64	62		/* AMD x86-64 */
194 #define EM_PDSP		63		/* Sony DSP Processor */
195 /* RESERVED 64,65 for future use */
196 #define EM_FX66		66		/* Siemens FX66 microcontroller */
197 #define EM_ST9PLUS	67		/* STMicroelectronics ST9+ 8/16 mc */
198 #define EM_ST7		68		/* STmicroelectronics ST7 8 bit mc */
199 #define EM_68HC16	69		/* Motorola MC68HC16 microcontroller */
200 #define EM_68HC11	70		/* Motorola MC68HC11 microcontroller */
201 #define EM_68HC08	71		/* Motorola MC68HC08 microcontroller */
202 #define EM_68HC05	72		/* Motorola MC68HC05 microcontroller */
203 #define EM_SVX		73		/* Silicon Graphics SVx */
204 #define EM_ST19		74		/* STMicroelectronics ST19 8 bit mc */
205 #define EM_VAX		75		/* Digital VAX */
206 #define EM_CHRIS	76		/* Axis Communications embedded proc. */
207 #define EM_JAVELIN	77		/* Infineon Technologies emb. proc. */
208 #define EM_FIREPATH	78		/* Element 14 64-bit DSP Processor */
209 #define EM_ZSP		79		/* LSI Logic 16-bit DSP Processor */
210 #define EM_MMIX		80		/* Donald Knuth's edu 64-bit proc. */
211 #define EM_HUANY	81		/* Harvard University mach-indep objs */
212 #define EM_PRISM	82		/* SiTera Prism */
213 #define EM_AVR		83		/* Atmel AVR 8-bit microcontroller */
214 #define EM_FR30		84		/* Fujitsu FR30 */
215 #define EM_D10V		85		/* Mitsubishi DV10V */
216 #define EM_D30V		86		/* Mitsubishi DV30V */
217 #define EM_V850		87		/* NEC v850 */
218 #define EM_M32R		88		/* Mitsubishi M32R */
219 #define EM_MN10300	89		/* Matsushita MN10200 */
220 #define EM_MN10200	90		/* Matsushita MN10200 */
221 #define EM_PJ		91		/* picoJava */
222 #define EM_NUM		92		/* number of machine types */
223 
224 /* Version */
225 #define EV_NONE		0		/* Invalid */
226 #define EV_CURRENT	1		/* Current */
227 #define EV_NUM		2		/* number of versions */
228 
229 /* Section Header */
230 typedef struct {
231 	Elf32_Word	sh_name;	/* name - index into section header
232 					   string table section */
233 	Elf32_Word	sh_type;	/* type */
234 	Elf32_Word	sh_flags;	/* flags */
235 	Elf32_Addr	sh_addr;	/* address */
236 	Elf32_Off	sh_offset;	/* file offset */
237 	Elf32_Word	sh_size;	/* section size */
238 	Elf32_Word	sh_link;	/* section header table index link */
239 	Elf32_Word	sh_info;	/* extra information */
240 	Elf32_Word	sh_addralign;	/* address alignment */
241 	Elf32_Word	sh_entsize;	/* section entry size */
242 } Elf32_Shdr;
243 
244 typedef struct {
245 	Elf64_Word	sh_name;	/* name - index into section header
246 					   string table section */
247 	Elf64_Word	sh_type;	/* type */
248 	Elf64_Xword	sh_flags;	/* flags */
249 	Elf64_Addr	sh_addr;	/* address */
250 	Elf64_Off	sh_offset;	/* file offset */
251 	Elf64_Xword	sh_size;	/* section size */
252 	Elf64_Word	sh_link;	/* section header table index link */
253 	Elf64_Word	sh_info;	/* extra information */
254 	Elf64_Xword	sh_addralign;	/* address alignment */
255 	Elf64_Xword	sh_entsize;	/* section entry size */
256 } Elf64_Shdr;
257 
258 /* Special Section Indexes */
259 #define SHN_UNDEF	0		/* undefined */
260 #define SHN_LORESERVE	0xff00		/* lower bounds of reserved indexes */
261 #define SHN_LOPROC	0xff00		/* reserved range for processor */
262 #define SHN_HIPROC	0xff1f		/* specific section indexes */
263 #define SHN_LOOS	0xff20		/* reserved range for operating */
264 #define SHN_HIOS	0xff3f		/* specific semantics */
265 #define SHN_ABS		0xfff1		/* absolute value */
266 #define SHN_COMMON	0xfff2		/* common symbol */
267 #define SHN_XINDEX	0xffff		/* Index is an extra table */
268 #define SHN_HIRESERVE	0xffff		/* upper bounds of reserved indexes */
269 
270 /* sh_type */
271 #define SHT_NULL	0		/* inactive */
272 #define SHT_PROGBITS	1		/* program defined information */
273 #define SHT_SYMTAB	2		/* symbol table section */
274 #define SHT_STRTAB	3		/* string table section */
275 #define SHT_RELA	4		/* relocation section with addends*/
276 #define SHT_HASH	5		/* symbol hash table section */
277 #define SHT_DYNAMIC	6		/* dynamic section */
278 #define SHT_NOTE	7		/* note section */
279 #define SHT_NOBITS	8		/* no space section */
280 #define SHT_REL		9		/* relation section without addends */
281 #define SHT_SHLIB	10		/* reserved - purpose unknown */
282 #define SHT_DYNSYM	11		/* dynamic symbol table section */
283 #define SHT_INIT_ARRAY	14		/* Array of constructors */
284 #define SHT_FINI_ARRAY	15		/* Array of destructors */
285 #define SHT_PREINIT_ARRAY 16		/* Array of pre-constructors */
286 #define SHT_GROUP	17		/* Section group */
287 #define SHT_SYMTAB_SHNDX 18		/* Extended section indeces */
288 #define SHT_NUM		19		/* number of section types */
289 #define SHT_LOOS	0x60000000	/* Start OS-specific */
290 #define SHT_HIOS	0x6fffffff	/* End OS-specific */
291 #define SHT_LOPROC	0x70000000	/* reserved range for processor */
292 #define SHT_HIPROC	0x7fffffff	/* specific section header types */
293 #define SHT_LOUSER	0x80000000	/* reserved range for application */
294 #define SHT_HIUSER	0xffffffff	/* specific indexes */
295 
296 /* Section names */
297 #define ELF_BSS		".bss"		/* uninitialized data */
298 #define ELF_COMMENT	".comment"	/* version control information */
299 #define ELF_DATA	".data"		/* initialized data */
300 #define ELF_DATA1	".data1"	/* initialized data */
301 #define ELF_DEBUG	".debug"	/* debug */
302 #define ELF_DYNAMIC	".dynamic"	/* dynamic linking information */
303 #define ELF_DYNSTR	".dynstr"	/* dynamic string table */
304 #define ELF_DYNSYM	".dynsym"	/* dynamic symbol table */
305 #define ELF_FINI	".fini"		/* termination code */
306 #define ELF_FINI_ARRAY	".fini_array"	/* Array of destructors */
307 #define ELF_GOT		".got"		/* global offset table */
308 #define ELF_HASH	".hash"		/* symbol hash table */
309 #define ELF_INIT	".init"		/* initialization code */
310 #define ELF_INIT_ARRAY	".init_array"	/* Array of constuctors */
311 #define ELF_INTERP	".interp"	/* Pathname of program interpreter */
312 #define ELF_LINE	".line"		/* Symbolic line numnber information */
313 #define ELF_NOTE	".note"		/* Contains note section */
314 #define ELF_PLT		".plt"		/* Procedure linkage table */
315 #define ELF_PREINIT_ARRAY ".preinit_array" /* Array of pre-constructors */
316 #define ELF_REL_DATA	".rel.data"	/* relocation data */
317 #define ELF_REL_FINI	".rel.fini"	/* relocation termination code */
318 #define ELF_REL_INIT	".rel.init"	/* relocation initialization code */
319 #define ELF_REL_DYN	".rel.dyn"	/* relocaltion dynamic link info */
320 #define ELF_REL_RODATA	".rel.rodata"	/* relocation read-only data */
321 #define ELF_REL_TEXT	".rel.text"	/* relocation code */
322 #define ELF_RODATA	".rodata"	/* read-only data */
323 #define ELF_RODATA1	".rodata1"	/* read-only data */
324 #define ELF_SHSTRTAB	".shstrtab"	/* section header string table */
325 #define ELF_STRTAB	".strtab"	/* string table */
326 #define ELF_SYMTAB	".symtab"	/* symbol table */
327 #define ELF_SYMTAB_SHNDX ".symtab_shndx"/* symbol table section index */
328 #define ELF_TBSS	".tbss"		/* thread local uninit data */
329 #define ELF_TDATA	".tdata"	/* thread local init data */
330 #define ELF_TDATA1	".tdata1"	/* thread local init data */
331 #define ELF_TEXT	".text"		/* code */
332 
333 /* Section Attribute Flags - sh_flags */
334 #define SHF_WRITE	0x1		/* Writable */
335 #define SHF_ALLOC	0x2		/* occupies memory */
336 #define SHF_EXECINSTR	0x4		/* executable */
337 #define SHF_MERGE	0x10		/* Might be merged */
338 #define SHF_STRINGS	0x20		/* Contains NULL terminated strings */
339 #define SHF_INFO_LINK	0x40		/* sh_info contains SHT index */
340 #define SHF_LINK_ORDER	0x80		/* Preserve order after combining*/
341 #define SHF_OS_NONCONFORMING 0x100	/* Non-standard OS specific handling */
342 #define SHF_GROUP	0x200		/* Member of section group */
343 #define SHF_TLS		0x400		/* Thread local storage */
344 #define SHF_MASKOS	0x0ff00000	/* OS specific */
345 #define SHF_MASKPROC	0xf0000000	/* reserved bits for processor */
346 					/* specific section attributes */
347 
348 /* Section Group Flags */
349 #define GRP_COMDAT	0x1		/* COMDAT group */
350 #define GRP_MASKOS	0x0ff00000	/* Mask OS specific flags */
351 #define GRP_MASKPROC	0xf0000000	/* Mask processor specific flags */
352 
353 /* Symbol Table Entry */
354 typedef struct {
355 	Elf32_Word	st_name;	/* name - index into string table */
356 	Elf32_Addr	st_value;	/* symbol value */
357 	Elf32_Word	st_size;	/* symbol size */
358 	unsigned char	st_info;	/* type and binding */
359 	unsigned char	st_other;	/* 0 - no defined meaning */
360 	Elf32_Half	st_shndx;	/* section header index */
361 } Elf32_Sym;
362 
363 /* Symbol table index */
364 #define STN_UNDEF	0		/* undefined */
365 
366 /* Extract symbol info - st_info */
367 #define ELF32_ST_BIND(x)	((x) >> 4)
368 #define ELF32_ST_TYPE(x)	(((unsigned int) x) & 0xf)
369 #define ELF32_ST_INFO(b,t)	(((b) << 4) + ((t) & 0xf))
370 #define ELF32_ST_VISIBILITY(x)	((x) & 0x3)
371 
372 /* Symbol Binding - ELF32_ST_BIND - st_info */
373 #define STB_LOCAL	0		/* Local symbol */
374 #define STB_GLOBAL	1		/* Global symbol */
375 #define STB_WEAK	2		/* like global - lower precedence */
376 #define STB_NUM		3		/* number of symbol bindings */
377 #define STB_LOOS	10		/* reserved range for operating */
378 #define STB_HIOS	12		/* system specific symbol bindings */
379 #define STB_LOPROC	13		/* reserved range for processor */
380 #define STB_HIPROC	15		/* specific symbol bindings */
381 
382 /* Symbol type - ELF32_ST_TYPE - st_info */
383 #define STT_NOTYPE	0		/* not specified */
384 #define STT_OBJECT	1		/* data object */
385 #define STT_FUNC	2		/* function */
386 #define STT_SECTION	3		/* section */
387 #define STT_FILE	4		/* file */
388 #define STT_NUM		5		/* number of symbol types */
389 #define STT_TLS		6		/* Thread local storage symbol */
390 #define STT_LOOS	10		/* reserved range for operating */
391 #define STT_HIOS	12		/* system specific symbol types */
392 #define STT_LOPROC	13		/* reserved range for processor */
393 #define STT_HIPROC	15		/* specific symbol types */
394 
395 /* Symbol visibility - ELF32_ST_VISIBILITY - st_other */
396 #define STV_DEFAULT	0		/* Normal visibility rules */
397 #define STV_INTERNAL	1		/* Processor specific hidden class */
398 #define STV_HIDDEN	2		/* Symbol unavailable in other mods */
399 #define STV_PROTECTED	3		/* Not preemptible, not exported */
400 
401 /* Relocation entry with implicit addend */
402 typedef struct {
403 	Elf32_Addr	r_offset;	/* offset of relocation */
404 	Elf32_Word	r_info;		/* symbol table index and type */
405 } Elf32_Rel;
406 
407 /* Relocation entry with explicit addend */
408 typedef struct {
409 	Elf32_Addr	r_offset;	/* offset of relocation */
410 	Elf32_Word	r_info;		/* symbol table index and type */
411 	Elf32_Sword	r_addend;
412 } Elf32_Rela;
413 
414 typedef struct {
415 	Elf64_Addr r_offset;	/* Location at which to apply the action */
416 	Elf64_Xword r_info;	/* index and type of relocation */
417 } Elf64_Rel;
418 
419 typedef struct {
420 	Elf64_Addr r_offset;	/* Location at which to apply the action */
421 	Elf64_Xword r_info;	/* index and type of relocation */
422 	Elf64_Sxword r_addend;	/* Constant addend used to compute value */
423 } Elf64_Rela;
424 
425 /* Extract relocation info - r_info */
426 #define ELF32_R_SYM(i)		((i) >> 8)
427 #define ELF32_R_TYPE(i)		((unsigned char) (i))
428 #define ELF32_R_INFO(s,t)	(((s) << 8) + (unsigned char)(t))
429 
430 /* Program Header */
431 typedef struct {
432 	Elf32_Word	p_type;		/* segment type */
433 	Elf32_Off	p_offset;	/* segment offset */
434 	Elf32_Addr	p_vaddr;	/* virtual address of segment */
435 	Elf32_Addr	p_paddr;	/* physical address of segment */
436 	Elf32_Word	p_filesz;	/* number of bytes in file for seg */
437 	Elf32_Word	p_memsz;	/* number of bytes in mem. for seg */
438 	Elf32_Word	p_flags;	/* flags */
439 	Elf32_Word	p_align;	/* memory alignment */
440 } Elf32_Phdr;
441 
442 typedef struct {
443 	Elf64_Word	p_type;		/* segment type */
444 	Elf64_Word	p_flags;	/* flags */
445 	Elf64_Off	p_offset;	/* segment offset */
446 	Elf64_Addr	p_vaddr;	/* virtual address of segment */
447 	Elf64_Addr	p_paddr;	/* physical address of segment */
448 	Elf64_Xword	p_filesz;	/* number of bytes in file for seg */
449 	Elf64_Xword	p_memsz;	/* number of bytes in mem. for seg */
450 	Elf64_Xword	p_align;	/* memory alignment */
451 } Elf64_Phdr;
452 
453 /* Segment types - p_type */
454 #define PT_NULL		0		/* unused */
455 #define PT_LOAD		1		/* loadable segment */
456 #define PT_DYNAMIC	2		/* dynamic linking section */
457 #define PT_INTERP	3		/* the RTLD */
458 #define PT_NOTE		4		/* auxiliary information */
459 #define PT_SHLIB	5		/* reserved - purpose undefined */
460 #define PT_PHDR		6		/* program header */
461 #define PT_TLS		7		/* Thread local storage template */
462 #define PT_NUM		8		/* Number of segment types */
463 #define PT_LOOS		0x60000000	/* reserved range for operating */
464 #define PT_HIOS		0x6fffffff	/* system specific segment types */
465 #define PT_LOPROC	0x70000000	/* reserved range for processor */
466 #define PT_HIPROC	0x7fffffff	/* specific segment types */
467 
468 /* Segment flags - p_flags */
469 #define PF_X		0x1		/* Executable */
470 #define PF_W		0x2		/* Writable */
471 #define PF_R		0x4		/* Readable */
472 #define PF_MASKOS	0x0ff00000	/* OS specific segment flags */
473 #define PF_MASKPROC	0xf0000000	/* reserved bits for processor */
474 					/* specific segment flags */
475 /* Dynamic structure */
476 typedef struct {
477 	Elf32_Sword	d_tag;		/* controls meaning of d_val */
478 	union {
479 		Elf32_Word	d_val;	/* Multiple meanings - see d_tag */
480 		Elf32_Addr	d_ptr;	/* program virtual address */
481 	} d_un;
482 } Elf32_Dyn;
483 
484 extern Elf32_Dyn	_DYNAMIC[];
485 
486 typedef struct {
487 	Elf64_Sxword d_tag;		/* entry tag value */
488 	union {
489 		Elf64_Xword d_val;
490 		Elf64_Addr d_ptr;
491 	} d_un;
492 } Elf64_Dyn;
493 
494 #define ELF64_R_SYM(i)			((i) >> 32)
495 #define ELF64_R_TYPE(i)			((i) & 0xffffffff)
496 
497 /* Dynamic Array Tags - d_tag */
498 #define DT_NULL		0		/* marks end of _DYNAMIC array */
499 #define DT_NEEDED	1		/* string table offset of needed lib */
500 #define DT_PLTRELSZ	2		/* size of relocation entries in PLT */
501 #define DT_PLTGOT	3		/* address PLT/GOT */
502 #define DT_HASH		4		/* address of symbol hash table */
503 #define DT_STRTAB	5		/* address of string table */
504 #define DT_SYMTAB	6		/* address of symbol table */
505 #define DT_RELA		7		/* address of relocation table */
506 #define DT_RELASZ	8		/* size of relocation table */
507 #define DT_RELAENT	9		/* size of relocation entry */
508 #define DT_STRSZ	10		/* size of string table */
509 #define DT_SYMENT	11		/* size of symbol table entry */
510 #define DT_INIT		12		/* address of initialization func */
511 #define DT_FINI		13		/* address of termination function */
512 #define DT_SONAME	14		/* string table offset of shared obj */
513 #define DT_RPATH	15		/* string table offset of library
514 					   search path */
515 #define DT_SYMBOLIC	16		/* start sym search in shared obj */
516 #define DT_REL		17		/* address of rel. tbl. w addends */
517 #define DT_RELSZ	18		/* size of DT_REL relocation table */
518 #define DT_RELENT	19		/* size of DT_REL relocation entry */
519 #define DT_PLTREL	20		/* PLT referenced relocation entry */
520 #define DT_DEBUG	21		/* bugger */
521 #define DT_TEXTREL	22		/* Allow rel. mod. to unwritable seg */
522 #define DT_JMPREL	23		/* add. of PLT's relocation entries */
523 #define DT_BIND_NOW	24		/* Process relocations of object */
524 #define DT_INIT_ARRAY	25		/* Array with addresses of init fct */
525 #define DT_FINI_ARRAY	26		/* Array with addresses of fini fct */
526 #define DT_INIT_ARRAYSZ	27		/* Size in bytes of DT_INIT_ARRAY */
527 #define DT_FINI_ARRAYSZ	28		/* Size in bytes of DT_FINI_ARRAY */
528 #define DT_RUNPATH	29		/* Library search path */
529 #define DT_FLAGS	30		/* Flags for the object being loaded */
530 #define DT_ENCODING	32		/* Start of encoded range */
531 #define DT_PREINIT_ARRAY 32		/* Array with addresses of preinit fct*/
532 #define DT_PREINIT_ARRAYSZ 33		/* size in bytes of DT_PREINIT_ARRAY */
533 #define DT_NUM		34		/* Number used */
534 #define DT_LOOS		0x60000000	/* reserved range for OS */
535 #define DT_HIOS		0x6fffffff	/* specific dynamic array tags */
536 #define DT_LOPROC	0x70000000	/* reserved range for processor */
537 #define DT_HIPROC	0x7fffffff	/* specific dynamic array tags */
538 
539 /* Dynamic Tag Flags - d_un.d_val */
540 #define DF_ORIGIN	0x01		/* Object may use DF_ORIGIN */
541 #define DF_SYMBOLIC	0x02		/* Symbol resolutions starts here */
542 #define DF_TEXTREL	0x04		/* Object contains text relocations */
543 #define DF_BIND_NOW	0x08		/* No lazy binding for this object */
544 #define DF_STATIC_TLS	0x10		/* Static thread local storage */
545 
546 /* Standard ELF hashing function */
547 unsigned long elf_hash(const unsigned char *name);
548 
549 #define ELF_TARG_VER	1	/* The ver for which this code is intended */
550 
551 #endif /* __ASSEMBLER */
552 
553 /* ELF register definitions */
554 #define R_386_NONE	0
555 #define R_386_32	1
556 #define R_386_PC32	2
557 #define R_386_GOT32	3
558 #define R_386_PLT32	4
559 #define R_386_COPY	5
560 #define R_386_GLOB_DAT	6
561 #define R_386_JMP_SLOT	7
562 #define R_386_RELATIVE	8
563 #define R_386_GOTOFF	9
564 #define R_386_GOTPC	10
565 #define R_386_NUM	11
566 
567 /* x86-64 relocation types */
568 #define R_X86_64_NONE		0	/* No reloc */
569 #define R_X86_64_64		1	/* Direct 64 bit  */
570 #define R_X86_64_PC32		2	/* PC relative 32 bit signed */
571 #define R_X86_64_GOT32		3	/* 32 bit GOT entry */
572 #define R_X86_64_PLT32		4	/* 32 bit PLT address */
573 #define R_X86_64_COPY		5	/* Copy symbol at runtime */
574 #define R_X86_64_GLOB_DAT	6	/* Create GOT entry */
575 #define R_X86_64_JUMP_SLOT	7	/* Create PLT entry */
576 #define R_X86_64_RELATIVE	8	/* Adjust by program base */
577 /* 32 bit signed pc relative offset to GOT */
578 #define R_X86_64_GOTPCREL	9
579 #define R_X86_64_32		10	/* Direct 32 bit zero extended */
580 #define R_X86_64_32S		11	/* Direct 32 bit sign extended */
581 #define R_X86_64_16		12	/* Direct 16 bit zero extended */
582 #define R_X86_64_PC16		13	/* 16 bit sign extended pc relative */
583 #define R_X86_64_8		14	/* Direct 8 bit sign extended  */
584 #define R_X86_64_PC8		15	/* 8 bit sign extended pc relative */
585 
586 #define R_X86_64_NUM		16
587 
588 /*
589  * XXX - PowerPC defines really don't belong in here,
590  * but we'll put them in for simplicity.
591  */
592 
593 /* Values for Elf32/64_Ehdr.e_flags */
594 #define EF_PPC_EMB		0x80000000	/* PowerPC embedded flag */
595 
596 #define EF_PPC64_ELFV1_ABI	0x00000001
597 #define EF_PPC64_ELFV2_ABI	0x00000002
598 
599 /* Cygnus local bits below */
600 #define EF_PPC_RELOCATABLE	0x00010000	/* PowerPC -mrelocatable flag*/
601 #define EF_PPC_RELOCATABLE_LIB	0x00008000	/* PowerPC -mrelocatable-lib
602 						   flag */
603 
604 /* PowerPC relocations defined by the ABIs */
605 #define R_PPC_NONE		0
606 #define R_PPC_ADDR32		1	/* 32bit absolute address */
607 #define R_PPC_ADDR24		2	/* 26bit address, 2 bits ignored */
608 #define R_PPC_ADDR16		3	/* 16bit absolute address */
609 #define R_PPC_ADDR16_LO		4	/* lower 16bit of absolute address */
610 #define R_PPC_ADDR16_HI		5	/* high 16bit of absolute address */
611 #define R_PPC_ADDR16_HA		6	/* adjusted high 16bit */
612 #define R_PPC_ADDR14		7	/* 16bit address, 2 bits ignored */
613 #define R_PPC_ADDR14_BRTAKEN	8
614 #define R_PPC_ADDR14_BRNTAKEN	9
615 #define R_PPC_REL24		10	/* PC relative 26 bit */
616 #define R_PPC_REL14		11	/* PC relative 16 bit */
617 #define R_PPC_REL14_BRTAKEN	12
618 #define R_PPC_REL14_BRNTAKEN	13
619 #define R_PPC_GOT16		14
620 #define R_PPC_GOT16_LO		15
621 #define R_PPC_GOT16_HI		16
622 #define R_PPC_GOT16_HA		17
623 #define R_PPC_PLTREL24		18
624 #define R_PPC_COPY		19
625 #define R_PPC_GLOB_DAT		20
626 #define R_PPC_JMP_SLOT		21
627 #define R_PPC_RELATIVE		22
628 #define R_PPC_LOCAL24PC		23
629 #define R_PPC_UADDR32		24
630 #define R_PPC_UADDR16		25
631 #define R_PPC_REL32		26
632 #define R_PPC_PLT32		27
633 #define R_PPC_PLTREL32		28
634 #define R_PPC_PLT16_LO		29
635 #define R_PPC_PLT16_HI		30
636 #define R_PPC_PLT16_HA		31
637 #define R_PPC_SDAREL16		32
638 #define R_PPC_SECTOFF		33
639 #define R_PPC_SECTOFF_LO	34
640 #define R_PPC_SECTOFF_HI	35
641 #define R_PPC_SECTOFF_HA	36
642 /* Keep this the last entry */
643 #define R_PPC_NUM		37
644 
645 /*
646  * The remaining relocs are from the Embedded ELF ABI, and are not
647  * in the SVR4 ELF ABI.
648  */
649 #define R_PPC_EMB_NADDR32	101
650 #define R_PPC_EMB_NADDR16	102
651 #define R_PPC_EMB_NADDR16_LO	103
652 #define R_PPC_EMB_NADDR16_HI	104
653 #define R_PPC_EMB_NADDR16_HA	105
654 #define R_PPC_EMB_SDAI16	106
655 #define R_PPC_EMB_SDA2I16	107
656 #define R_PPC_EMB_SDA2REL	108
657 #define R_PPC_EMB_SDA21		109	/* 16 bit offset in SDA */
658 #define R_PPC_EMB_MRKREF	110
659 #define R_PPC_EMB_RELSEC16	111
660 #define R_PPC_EMB_RELST_LO	112
661 #define R_PPC_EMB_RELST_HI	113
662 #define R_PPC_EMB_RELST_HA	114
663 #define R_PPC_EMB_BIT_FLD	115
664 #define R_PPC_EMB_RELSDA	116	/* 16 bit relative offset in SDA */
665 
666 /* Diab tool relocations */
667 #define R_PPC_DIAB_SDA21_LO	180	/* like EMB_SDA21, but lower 16 bit */
668 #define R_PPC_DIAB_SDA21_HI	181	/* like EMB_SDA21, but high 16 bit */
669 #define R_PPC_DIAB_SDA21_HA	182	/* like EMB_SDA21, adjusted high 16 */
670 #define R_PPC_DIAB_RELSDA_LO	183	/* like EMB_RELSDA, but lower 16 bit */
671 #define R_PPC_DIAB_RELSDA_HI	184	/* like EMB_RELSDA, but high 16 bit */
672 #define R_PPC_DIAB_RELSDA_HA	185	/* like EMB_RELSDA, adjusted high 16 */
673 
674 /*
675  * This is a phony reloc to handle any old fashioned TOC16 references
676  * that may still be in object files.
677  */
678 #define R_PPC_TOC16		255
679 
680  /* ARM relocs */
681 #define R_ARM_NONE		0	/* No reloc */
682 #define R_ARM_RELATIVE		23	/* Adjust by program base */
683 
684 /* AArch64 relocs */
685 #define R_AARCH64_NONE		0	/* No relocation */
686 #define R_AARCH64_RELATIVE	1027	/* Adjust by program base */
687 
688 /* RISC-V relocations */
689 #define R_RISCV_32		1
690 #define R_RISCV_64		2
691 #define R_RISCV_RELATIVE	3
692 
693 #ifndef __ASSEMBLER__
694 int valid_elf_image(unsigned long addr);
695 #endif
696 
697 #endif /* _ELF_H */
698