xref: /openbmc/u-boot/include/elf.h (revision 96c2961ba68e0baf463998301a09eddf76f462e6)
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