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[thirdparty/u-boot.git] / include / elf.h
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 __ASSEMBLY__
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 __ASSEMBLY__
694 int valid_elf_image(unsigned long addr);
695 unsigned long load_elf64_image_phdr(unsigned long addr);
696 unsigned long load_elf64_image_shdr(unsigned long addr);
697 unsigned long load_elf_image_phdr(unsigned long addr);
698 unsigned long load_elf_image_shdr(unsigned long addr);
699 #endif
700
701 #endif /* _ELF_H */
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