blob: 63d93416a3e1246975bd390b8990b6067c350f97
1 | /* |
2 | * Copyright (c) 1995, 1996, 2001, 2002 |
3 | * Erik Theisen. All rights reserved. |
4 | * |
5 | * SPDX-License-Identifier: BSD-3-Clause |
6 | */ |
7 | |
8 | /* |
9 | * This is the ELF ABI header file |
10 | * formerly known as "elf_abi.h". |
11 | */ |
12 | |
13 | #ifndef _ELF_H |
14 | #define _ELF_H |
15 | |
16 | #include "compiler.h" |
17 | |
18 | /* |
19 | * This version doesn't work for 64-bit ABIs - Erik. |
20 | */ |
21 | |
22 | /* |
23 | * These typedefs need to be handled better. |
24 | */ |
25 | typedef uint32_t Elf32_Addr; /* Unsigned program address */ |
26 | typedef uint32_t Elf32_Off; /* Unsigned file offset */ |
27 | typedef int32_t Elf32_Sword; /* Signed large integer */ |
28 | typedef uint32_t Elf32_Word; /* Unsigned large integer */ |
29 | typedef uint16_t Elf32_Half; /* Unsigned medium integer */ |
30 | |
31 | /* e_ident[] identification indexes */ |
32 | #define EI_MAG0 0 /* file ID */ |
33 | #define EI_MAG1 1 /* file ID */ |
34 | #define EI_MAG2 2 /* file ID */ |
35 | #define EI_MAG3 3 /* file ID */ |
36 | #define EI_CLASS 4 /* file class */ |
37 | #define EI_DATA 5 /* data encoding */ |
38 | #define EI_VERSION 6 /* ELF header version */ |
39 | #define EI_OSABI 7 /* OS/ABI specific ELF extensions */ |
40 | #define EI_ABIVERSION 8 /* ABI target version */ |
41 | #define EI_PAD 9 /* start of pad bytes */ |
42 | #define EI_NIDENT 16 /* Size of e_ident[] */ |
43 | |
44 | /* e_ident[] magic number */ |
45 | #define ELFMAG0 0x7f /* e_ident[EI_MAG0] */ |
46 | #define ELFMAG1 'E' /* e_ident[EI_MAG1] */ |
47 | #define ELFMAG2 'L' /* e_ident[EI_MAG2] */ |
48 | #define ELFMAG3 'F' /* e_ident[EI_MAG3] */ |
49 | #define ELFMAG "\177ELF" /* magic */ |
50 | #define SELFMAG 4 /* size of magic */ |
51 | |
52 | /* e_ident[] file class */ |
53 | #define ELFCLASSNONE 0 /* invalid */ |
54 | #define ELFCLASS32 1 /* 32-bit objs */ |
55 | #define ELFCLASS64 2 /* 64-bit objs */ |
56 | #define ELFCLASSNUM 3 /* number of classes */ |
57 | |
58 | /* e_ident[] data encoding */ |
59 | #define ELFDATANONE 0 /* invalid */ |
60 | #define ELFDATA2LSB 1 /* Little-Endian */ |
61 | #define ELFDATA2MSB 2 /* Big-Endian */ |
62 | #define ELFDATANUM 3 /* number of data encode defines */ |
63 | |
64 | /* e_ident[] OS/ABI specific ELF extensions */ |
65 | #define ELFOSABI_NONE 0 /* No extension specified */ |
66 | #define ELFOSABI_HPUX 1 /* Hewlett-Packard HP-UX */ |
67 | #define ELFOSABI_NETBSD 2 /* NetBSD */ |
68 | #define ELFOSABI_LINUX 3 /* Linux */ |
69 | #define ELFOSABI_SOLARIS 6 /* Sun Solaris */ |
70 | #define ELFOSABI_AIX 7 /* AIX */ |
71 | #define ELFOSABI_IRIX 8 /* IRIX */ |
72 | #define ELFOSABI_FREEBSD 9 /* FreeBSD */ |
73 | #define ELFOSABI_TRU64 10 /* Compaq TRU64 UNIX */ |
74 | #define ELFOSABI_MODESTO 11 /* Novell Modesto */ |
75 | #define ELFOSABI_OPENBSD 12 /* OpenBSD */ |
76 | /* 64-255 Architecture-specific value range */ |
77 | |
78 | /* e_ident[] ABI Version */ |
79 | #define ELFABIVERSION 0 |
80 | |
81 | /* e_ident */ |
82 | #define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \ |
83 | (ehdr).e_ident[EI_MAG1] == ELFMAG1 && \ |
84 | (ehdr).e_ident[EI_MAG2] == ELFMAG2 && \ |
85 | (ehdr).e_ident[EI_MAG3] == ELFMAG3) |
86 | |
87 | /* ELF Header */ |
88 | typedef struct elfhdr{ |
89 | unsigned char e_ident[EI_NIDENT]; /* ELF Identification */ |
90 | Elf32_Half e_type; /* object file type */ |
91 | Elf32_Half e_machine; /* machine */ |
92 | Elf32_Word e_version; /* object file version */ |
93 | Elf32_Addr e_entry; /* virtual entry point */ |
94 | Elf32_Off e_phoff; /* program header table offset */ |
95 | Elf32_Off e_shoff; /* section header table offset */ |
96 | Elf32_Word e_flags; /* processor-specific flags */ |
97 | Elf32_Half e_ehsize; /* ELF header size */ |
98 | Elf32_Half e_phentsize; /* program header entry size */ |
99 | Elf32_Half e_phnum; /* number of program header entries */ |
100 | Elf32_Half e_shentsize; /* section header entry size */ |
101 | Elf32_Half e_shnum; /* number of section header entries */ |
102 | Elf32_Half e_shstrndx; /* section header table's "section |
103 | header string table" entry offset */ |
104 | } Elf32_Ehdr; |
105 | |
106 | /* e_type */ |
107 | #define ET_NONE 0 /* No file type */ |
108 | #define ET_REL 1 /* relocatable file */ |
109 | #define ET_EXEC 2 /* executable file */ |
110 | #define ET_DYN 3 /* shared object file */ |
111 | #define ET_CORE 4 /* core file */ |
112 | #define ET_NUM 5 /* number of types */ |
113 | #define ET_LOOS 0xfe00 /* reserved range for operating */ |
114 | #define ET_HIOS 0xfeff /* system specific e_type */ |
115 | #define ET_LOPROC 0xff00 /* reserved range for processor */ |
116 | #define ET_HIPROC 0xffff /* specific e_type */ |
117 | |
118 | /* e_machine */ |
119 | #define EM_NONE 0 /* No Machine */ |
120 | #define EM_M32 1 /* AT&T WE 32100 */ |
121 | #define EM_SPARC 2 /* SPARC */ |
122 | #define EM_386 3 /* Intel 80386 */ |
123 | #define EM_68K 4 /* Motorola 68000 */ |
124 | #define EM_88K 5 /* Motorola 88000 */ |
125 | #if 0 |
126 | #define EM_486 6 /* RESERVED - was Intel 80486 */ |
127 | #endif |
128 | #define EM_860 7 /* Intel 80860 */ |
129 | #define EM_MIPS 8 /* MIPS R3000 Big-Endian only */ |
130 | #define EM_S370 9 /* IBM System/370 Processor */ |
131 | #define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */ |
132 | #if 0 |
133 | #define EM_SPARC64 11 /* RESERVED - was SPARC v9 |
134 | 64-bit unoffical */ |
135 | #endif |
136 | /* RESERVED 11-14 for future use */ |
137 | #define EM_PARISC 15 /* HPPA */ |
138 | /* RESERVED 16 for future use */ |
139 | #define EM_VPP500 17 /* Fujitsu VPP500 */ |
140 | #define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */ |
141 | #define EM_960 19 /* Intel 80960 */ |
142 | #define EM_PPC 20 /* PowerPC */ |
143 | #define EM_PPC64 21 /* 64-bit PowerPC */ |
144 | #define EM_S390 22 /* IBM System/390 Processor */ |
145 | /* RESERVED 23-35 for future use */ |
146 | #define EM_V800 36 /* NEC V800 */ |
147 | #define EM_FR20 37 /* Fujitsu FR20 */ |
148 | #define EM_RH32 38 /* TRW RH-32 */ |
149 | #define EM_RCE 39 /* Motorola RCE */ |
150 | #define EM_ARM 40 /* Advanced Risc Machines ARM */ |
151 | #define EM_ALPHA 41 /* Digital Alpha */ |
152 | #define EM_SH 42 /* Hitachi SH */ |
153 | #define EM_SPARCV9 43 /* SPARC Version 9 */ |
154 | #define EM_TRICORE 44 /* Siemens TriCore embedded processor */ |
155 | #define EM_ARC 45 /* Argonaut RISC Core */ |
156 | #define EM_H8_300 46 /* Hitachi H8/300 */ |
157 | #define EM_H8_300H 47 /* Hitachi H8/300H */ |
158 | #define EM_H8S 48 /* Hitachi H8S */ |
159 | #define EM_H8_500 49 /* Hitachi H8/500 */ |
160 | #define EM_IA_64 50 /* Intel Merced */ |
161 | #define EM_MIPS_X 51 /* Stanford MIPS-X */ |
162 | #define EM_COLDFIRE 52 /* Motorola Coldfire */ |
163 | #define EM_68HC12 53 /* Motorola M68HC12 */ |
164 | #define EM_MMA 54 /* Fujitsu MMA Multimedia Accelerator*/ |
165 | #define EM_PCP 55 /* Siemens PCP */ |
166 | #define EM_NCPU 56 /* Sony nCPU embeeded RISC */ |
167 | #define EM_NDR1 57 /* Denso NDR1 microprocessor */ |
168 | #define EM_STARCORE 58 /* Motorola Start*Core processor */ |
169 | #define EM_ME16 59 /* Toyota ME16 processor */ |
170 | #define EM_ST100 60 /* STMicroelectronic ST100 processor */ |
171 | #define EM_TINYJ 61 /* Advanced Logic Corp. Tinyj emb.fam*/ |
172 | #define EM_X86_64 62 /* AMD x86-64 */ |
173 | #define EM_PDSP 63 /* Sony DSP Processor */ |
174 | /* RESERVED 64,65 for future use */ |
175 | #define EM_FX66 66 /* Siemens FX66 microcontroller */ |
176 | #define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16 mc */ |
177 | #define EM_ST7 68 /* STmicroelectronics ST7 8 bit mc */ |
178 | #define EM_68HC16 69 /* Motorola MC68HC16 microcontroller */ |
179 | #define EM_68HC11 70 /* Motorola MC68HC11 microcontroller */ |
180 | #define EM_68HC08 71 /* Motorola MC68HC08 microcontroller */ |
181 | #define EM_68HC05 72 /* Motorola MC68HC05 microcontroller */ |
182 | #define EM_SVX 73 /* Silicon Graphics SVx */ |
183 | #define EM_ST19 74 /* STMicroelectronics ST19 8 bit mc */ |
184 | #define EM_VAX 75 /* Digital VAX */ |
185 | #define EM_CHRIS 76 /* Axis Communications embedded proc. */ |
186 | #define EM_JAVELIN 77 /* Infineon Technologies emb. proc. */ |
187 | #define EM_FIREPATH 78 /* Element 14 64-bit DSP Processor */ |
188 | #define EM_ZSP 79 /* LSI Logic 16-bit DSP Processor */ |
189 | #define EM_MMIX 80 /* Donald Knuth's edu 64-bit proc. */ |
190 | #define EM_HUANY 81 /* Harvard University mach-indep objs */ |
191 | #define EM_PRISM 82 /* SiTera Prism */ |
192 | #define EM_AVR 83 /* Atmel AVR 8-bit microcontroller */ |
193 | #define EM_FR30 84 /* Fujitsu FR30 */ |
194 | #define EM_D10V 85 /* Mitsubishi DV10V */ |
195 | #define EM_D30V 86 /* Mitsubishi DV30V */ |
196 | #define EM_V850 87 /* NEC v850 */ |
197 | #define EM_M32R 88 /* Mitsubishi M32R */ |
198 | #define EM_MN10300 89 /* Matsushita MN10200 */ |
199 | #define EM_MN10200 90 /* Matsushita MN10200 */ |
200 | #define EM_PJ 91 /* picoJava */ |
201 | #define EM_NUM 92 /* number of machine types */ |
202 | |
203 | /* Version */ |
204 | #define EV_NONE 0 /* Invalid */ |
205 | #define EV_CURRENT 1 /* Current */ |
206 | #define EV_NUM 2 /* number of versions */ |
207 | |
208 | /* Section Header */ |
209 | typedef struct { |
210 | Elf32_Word sh_name; /* name - index into section header |
211 | string table section */ |
212 | Elf32_Word sh_type; /* type */ |
213 | Elf32_Word sh_flags; /* flags */ |
214 | Elf32_Addr sh_addr; /* address */ |
215 | Elf32_Off sh_offset; /* file offset */ |
216 | Elf32_Word sh_size; /* section size */ |
217 | Elf32_Word sh_link; /* section header table index link */ |
218 | Elf32_Word sh_info; /* extra information */ |
219 | Elf32_Word sh_addralign; /* address alignment */ |
220 | Elf32_Word sh_entsize; /* section entry size */ |
221 | } Elf32_Shdr; |
222 | |
223 | /* Special Section Indexes */ |
224 | #define SHN_UNDEF 0 /* undefined */ |
225 | #define SHN_LORESERVE 0xff00 /* lower bounds of reserved indexes */ |
226 | #define SHN_LOPROC 0xff00 /* reserved range for processor */ |
227 | #define SHN_HIPROC 0xff1f /* specific section indexes */ |
228 | #define SHN_LOOS 0xff20 /* reserved range for operating */ |
229 | #define SHN_HIOS 0xff3f /* specific semantics */ |
230 | #define SHN_ABS 0xfff1 /* absolute value */ |
231 | #define SHN_COMMON 0xfff2 /* common symbol */ |
232 | #define SHN_XINDEX 0xffff /* Index is an extra table */ |
233 | #define SHN_HIRESERVE 0xffff /* upper bounds of reserved indexes */ |
234 | |
235 | /* sh_type */ |
236 | #define SHT_NULL 0 /* inactive */ |
237 | #define SHT_PROGBITS 1 /* program defined information */ |
238 | #define SHT_SYMTAB 2 /* symbol table section */ |
239 | #define SHT_STRTAB 3 /* string table section */ |
240 | #define SHT_RELA 4 /* relocation section with addends*/ |
241 | #define SHT_HASH 5 /* symbol hash table section */ |
242 | #define SHT_DYNAMIC 6 /* dynamic section */ |
243 | #define SHT_NOTE 7 /* note section */ |
244 | #define SHT_NOBITS 8 /* no space section */ |
245 | #define SHT_REL 9 /* relation section without addends */ |
246 | #define SHT_SHLIB 10 /* reserved - purpose unknown */ |
247 | #define SHT_DYNSYM 11 /* dynamic symbol table section */ |
248 | #define SHT_INIT_ARRAY 14 /* Array of constructors */ |
249 | #define SHT_FINI_ARRAY 15 /* Array of destructors */ |
250 | #define SHT_PREINIT_ARRAY 16 /* Array of pre-constructors */ |
251 | #define SHT_GROUP 17 /* Section group */ |
252 | #define SHT_SYMTAB_SHNDX 18 /* Extended section indeces */ |
253 | #define SHT_NUM 19 /* number of section types */ |
254 | #define SHT_LOOS 0x60000000 /* Start OS-specific */ |
255 | #define SHT_HIOS 0x6fffffff /* End OS-specific */ |
256 | #define SHT_LOPROC 0x70000000 /* reserved range for processor */ |
257 | #define SHT_HIPROC 0x7fffffff /* specific section header types */ |
258 | #define SHT_LOUSER 0x80000000 /* reserved range for application */ |
259 | #define SHT_HIUSER 0xffffffff /* specific indexes */ |
260 | |
261 | /* Section names */ |
262 | #define ELF_BSS ".bss" /* uninitialized data */ |
263 | #define ELF_COMMENT ".comment" /* version control information */ |
264 | #define ELF_DATA ".data" /* initialized data */ |
265 | #define ELF_DATA1 ".data1" /* initialized data */ |
266 | #define ELF_DEBUG ".debug" /* debug */ |
267 | #define ELF_DYNAMIC ".dynamic" /* dynamic linking information */ |
268 | #define ELF_DYNSTR ".dynstr" /* dynamic string table */ |
269 | #define ELF_DYNSYM ".dynsym" /* dynamic symbol table */ |
270 | #define ELF_FINI ".fini" /* termination code */ |
271 | #define ELF_FINI_ARRAY ".fini_array" /* Array of destructors */ |
272 | #define ELF_GOT ".got" /* global offset table */ |
273 | #define ELF_HASH ".hash" /* symbol hash table */ |
274 | #define ELF_INIT ".init" /* initialization code */ |
275 | #define ELF_INIT_ARRAY ".init_array" /* Array of constuctors */ |
276 | #define ELF_INTERP ".interp" /* Pathname of program interpreter */ |
277 | #define ELF_LINE ".line" /* Symbolic line numnber information */ |
278 | #define ELF_NOTE ".note" /* Contains note section */ |
279 | #define ELF_PLT ".plt" /* Procedure linkage table */ |
280 | #define ELF_PREINIT_ARRAY ".preinit_array" /* Array of pre-constructors */ |
281 | #define ELF_REL_DATA ".rel.data" /* relocation data */ |
282 | #define ELF_REL_FINI ".rel.fini" /* relocation termination code */ |
283 | #define ELF_REL_INIT ".rel.init" /* relocation initialization code */ |
284 | #define ELF_REL_DYN ".rel.dyn" /* relocaltion dynamic link info */ |
285 | #define ELF_REL_RODATA ".rel.rodata" /* relocation read-only data */ |
286 | #define ELF_REL_TEXT ".rel.text" /* relocation code */ |
287 | #define ELF_RODATA ".rodata" /* read-only data */ |
288 | #define ELF_RODATA1 ".rodata1" /* read-only data */ |
289 | #define ELF_SHSTRTAB ".shstrtab" /* section header string table */ |
290 | #define ELF_STRTAB ".strtab" /* string table */ |
291 | #define ELF_SYMTAB ".symtab" /* symbol table */ |
292 | #define ELF_SYMTAB_SHNDX ".symtab_shndx"/* symbol table section index */ |
293 | #define ELF_TBSS ".tbss" /* thread local uninit data */ |
294 | #define ELF_TDATA ".tdata" /* thread local init data */ |
295 | #define ELF_TDATA1 ".tdata1" /* thread local init data */ |
296 | #define ELF_TEXT ".text" /* code */ |
297 | |
298 | /* Section Attribute Flags - sh_flags */ |
299 | #define SHF_WRITE 0x1 /* Writable */ |
300 | #define SHF_ALLOC 0x2 /* occupies memory */ |
301 | #define SHF_EXECINSTR 0x4 /* executable */ |
302 | #define SHF_MERGE 0x10 /* Might be merged */ |
303 | #define SHF_STRINGS 0x20 /* Contains NULL terminated strings */ |
304 | #define SHF_INFO_LINK 0x40 /* sh_info contains SHT index */ |
305 | #define SHF_LINK_ORDER 0x80 /* Preserve order after combining*/ |
306 | #define SHF_OS_NONCONFORMING 0x100 /* Non-standard OS specific handling */ |
307 | #define SHF_GROUP 0x200 /* Member of section group */ |
308 | #define SHF_TLS 0x400 /* Thread local storage */ |
309 | #define SHF_MASKOS 0x0ff00000 /* OS specific */ |
310 | #define SHF_MASKPROC 0xf0000000 /* reserved bits for processor */ |
311 | /* specific section attributes */ |
312 | |
313 | /* Section Group Flags */ |
314 | #define GRP_COMDAT 0x1 /* COMDAT group */ |
315 | #define GRP_MASKOS 0x0ff00000 /* Mask OS specific flags */ |
316 | #define GRP_MASKPROC 0xf0000000 /* Mask processor specific flags */ |
317 | |
318 | /* Symbol Table Entry */ |
319 | typedef struct elf32_sym { |
320 | Elf32_Word st_name; /* name - index into string table */ |
321 | Elf32_Addr st_value; /* symbol value */ |
322 | Elf32_Word st_size; /* symbol size */ |
323 | unsigned char st_info; /* type and binding */ |
324 | unsigned char st_other; /* 0 - no defined meaning */ |
325 | Elf32_Half st_shndx; /* section header index */ |
326 | } Elf32_Sym; |
327 | |
328 | /* Symbol table index */ |
329 | #define STN_UNDEF 0 /* undefined */ |
330 | |
331 | /* Extract symbol info - st_info */ |
332 | #define ELF32_ST_BIND(x) ((x) >> 4) |
333 | #define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf) |
334 | #define ELF32_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf)) |
335 | #define ELF32_ST_VISIBILITY(x) ((x) & 0x3) |
336 | |
337 | /* Symbol Binding - ELF32_ST_BIND - st_info */ |
338 | #define STB_LOCAL 0 /* Local symbol */ |
339 | #define STB_GLOBAL 1 /* Global symbol */ |
340 | #define STB_WEAK 2 /* like global - lower precedence */ |
341 | #define STB_NUM 3 /* number of symbol bindings */ |
342 | #define STB_LOOS 10 /* reserved range for operating */ |
343 | #define STB_HIOS 12 /* system specific symbol bindings */ |
344 | #define STB_LOPROC 13 /* reserved range for processor */ |
345 | #define STB_HIPROC 15 /* specific symbol bindings */ |
346 | |
347 | /* Symbol type - ELF32_ST_TYPE - st_info */ |
348 | #define STT_NOTYPE 0 /* not specified */ |
349 | #define STT_OBJECT 1 /* data object */ |
350 | #define STT_FUNC 2 /* function */ |
351 | #define STT_SECTION 3 /* section */ |
352 | #define STT_FILE 4 /* file */ |
353 | #define STT_NUM 5 /* number of symbol types */ |
354 | #define STT_TLS 6 /* Thread local storage symbol */ |
355 | #define STT_LOOS 10 /* reserved range for operating */ |
356 | #define STT_HIOS 12 /* system specific symbol types */ |
357 | #define STT_LOPROC 13 /* reserved range for processor */ |
358 | #define STT_HIPROC 15 /* specific symbol types */ |
359 | |
360 | /* Symbol visibility - ELF32_ST_VISIBILITY - st_other */ |
361 | #define STV_DEFAULT 0 /* Normal visibility rules */ |
362 | #define STV_INTERNAL 1 /* Processor specific hidden class */ |
363 | #define STV_HIDDEN 2 /* Symbol unavailable in other mods */ |
364 | #define STV_PROTECTED 3 /* Not preemptible, not exported */ |
365 | |
366 | |
367 | /* Relocation entry with implicit addend */ |
368 | typedef struct |
369 | { |
370 | Elf32_Addr r_offset; /* offset of relocation */ |
371 | Elf32_Word r_info; /* symbol table index and type */ |
372 | } Elf32_Rel; |
373 | |
374 | /* Relocation entry with explicit addend */ |
375 | typedef struct |
376 | { |
377 | Elf32_Addr r_offset; /* offset of relocation */ |
378 | Elf32_Word r_info; /* symbol table index and type */ |
379 | Elf32_Sword r_addend; |
380 | } Elf32_Rela; |
381 | |
382 | /* Extract relocation info - r_info */ |
383 | #define ELF32_R_SYM(i) ((i) >> 8) |
384 | #define ELF32_R_TYPE(i) ((unsigned char) (i)) |
385 | #define ELF32_R_INFO(s,t) (((s) << 8) + (unsigned char)(t)) |
386 | |
387 | /* Program Header */ |
388 | typedef struct { |
389 | Elf32_Word p_type; /* segment type */ |
390 | Elf32_Off p_offset; /* segment offset */ |
391 | Elf32_Addr p_vaddr; /* virtual address of segment */ |
392 | Elf32_Addr p_paddr; /* physical address - ignored? */ |
393 | Elf32_Word p_filesz; /* number of bytes in file for seg. */ |
394 | Elf32_Word p_memsz; /* number of bytes in mem. for seg. */ |
395 | Elf32_Word p_flags; /* flags */ |
396 | Elf32_Word p_align; /* memory alignment */ |
397 | } Elf32_Phdr; |
398 | |
399 | /* Segment types - p_type */ |
400 | #define PT_NULL 0 /* unused */ |
401 | #define PT_LOAD 1 /* loadable segment */ |
402 | #define PT_DYNAMIC 2 /* dynamic linking section */ |
403 | #define PT_INTERP 3 /* the RTLD */ |
404 | #define PT_NOTE 4 /* auxiliary information */ |
405 | #define PT_SHLIB 5 /* reserved - purpose undefined */ |
406 | #define PT_PHDR 6 /* program header */ |
407 | #define PT_TLS 7 /* Thread local storage template */ |
408 | #define PT_NUM 8 /* Number of segment types */ |
409 | #define PT_LOOS 0x60000000 /* reserved range for operating */ |
410 | #define PT_HIOS 0x6fffffff /* system specific segment types */ |
411 | #define PT_LOPROC 0x70000000 /* reserved range for processor */ |
412 | #define PT_HIPROC 0x7fffffff /* specific segment types */ |
413 | |
414 | /* Segment flags - p_flags */ |
415 | #define PF_X 0x1 /* Executable */ |
416 | #define PF_W 0x2 /* Writable */ |
417 | #define PF_R 0x4 /* Readable */ |
418 | #define PF_MASKOS 0x0ff00000 /* OS specific segment flags */ |
419 | #define PF_MASKPROC 0xf0000000 /* reserved bits for processor */ |
420 | /* specific segment flags */ |
421 | /* Dynamic structure */ |
422 | typedef struct |
423 | { |
424 | Elf32_Sword d_tag; /* controls meaning of d_val */ |
425 | union |
426 | { |
427 | Elf32_Word d_val; /* Multiple meanings - see d_tag */ |
428 | Elf32_Addr d_ptr; /* program virtual address */ |
429 | } d_un; |
430 | } Elf32_Dyn; |
431 | |
432 | extern Elf32_Dyn _DYNAMIC[]; |
433 | |
434 | /* Dynamic Array Tags - d_tag */ |
435 | #define DT_NULL 0 /* marks end of _DYNAMIC array */ |
436 | #define DT_NEEDED 1 /* string table offset of needed lib */ |
437 | #define DT_PLTRELSZ 2 /* size of relocation entries in PLT */ |
438 | #define DT_PLTGOT 3 /* address PLT/GOT */ |
439 | #define DT_HASH 4 /* address of symbol hash table */ |
440 | #define DT_STRTAB 5 /* address of string table */ |
441 | #define DT_SYMTAB 6 /* address of symbol table */ |
442 | #define DT_RELA 7 /* address of relocation table */ |
443 | #define DT_RELASZ 8 /* size of relocation table */ |
444 | #define DT_RELAENT 9 /* size of relocation entry */ |
445 | #define DT_STRSZ 10 /* size of string table */ |
446 | #define DT_SYMENT 11 /* size of symbol table entry */ |
447 | #define DT_INIT 12 /* address of initialization func. */ |
448 | #define DT_FINI 13 /* address of termination function */ |
449 | #define DT_SONAME 14 /* string table offset of shared obj */ |
450 | #define DT_RPATH 15 /* string table offset of library |
451 | search path */ |
452 | #define DT_SYMBOLIC 16 /* start sym search in shared obj. */ |
453 | #define DT_REL 17 /* address of rel. tbl. w addends */ |
454 | #define DT_RELSZ 18 /* size of DT_REL relocation table */ |
455 | #define DT_RELENT 19 /* size of DT_REL relocation entry */ |
456 | #define DT_PLTREL 20 /* PLT referenced relocation entry */ |
457 | #define DT_DEBUG 21 /* bugger */ |
458 | #define DT_TEXTREL 22 /* Allow rel. mod. to unwritable seg */ |
459 | #define DT_JMPREL 23 /* add. of PLT's relocation entries */ |
460 | #define DT_BIND_NOW 24 /* Process relocations of object */ |
461 | #define DT_INIT_ARRAY 25 /* Array with addresses of init fct */ |
462 | #define DT_FINI_ARRAY 26 /* Array with addresses of fini fct */ |
463 | #define DT_INIT_ARRAYSZ 27 /* Size in bytes of DT_INIT_ARRAY */ |
464 | #define DT_FINI_ARRAYSZ 28 /* Size in bytes of DT_FINI_ARRAY */ |
465 | #define DT_RUNPATH 29 /* Library search path */ |
466 | #define DT_FLAGS 30 /* Flags for the object being loaded */ |
467 | #define DT_ENCODING 32 /* Start of encoded range */ |
468 | #define DT_PREINIT_ARRAY 32 /* Array with addresses of preinit fct*/ |
469 | #define DT_PREINIT_ARRAYSZ 33 /* size in bytes of DT_PREINIT_ARRAY */ |
470 | #define DT_NUM 34 /* Number used. */ |
471 | #define DT_LOOS 0x60000000 /* reserved range for OS */ |
472 | #define DT_HIOS 0x6fffffff /* specific dynamic array tags */ |
473 | #define DT_LOPROC 0x70000000 /* reserved range for processor */ |
474 | #define DT_HIPROC 0x7fffffff /* specific dynamic array tags */ |
475 | |
476 | /* Dynamic Tag Flags - d_un.d_val */ |
477 | #define DF_ORIGIN 0x01 /* Object may use DF_ORIGIN */ |
478 | #define DF_SYMBOLIC 0x02 /* Symbol resolutions starts here */ |
479 | #define DF_TEXTREL 0x04 /* Object contains text relocations */ |
480 | #define DF_BIND_NOW 0x08 /* No lazy binding for this object */ |
481 | #define DF_STATIC_TLS 0x10 /* Static thread local storage */ |
482 | |
483 | /* Standard ELF hashing function */ |
484 | unsigned long elf_hash(const unsigned char *name); |
485 | |
486 | #define ELF_TARG_VER 1 /* The ver for which this code is intended */ |
487 | |
488 | /* |
489 | * XXX - PowerPC defines really don't belong in here, |
490 | * but we'll put them in for simplicity. |
491 | */ |
492 | |
493 | /* Values for Elf32/64_Ehdr.e_flags. */ |
494 | #define EF_PPC_EMB 0x80000000 /* PowerPC embedded flag */ |
495 | |
496 | /* Cygnus local bits below */ |
497 | #define EF_PPC_RELOCATABLE 0x00010000 /* PowerPC -mrelocatable flag*/ |
498 | #define EF_PPC_RELOCATABLE_LIB 0x00008000 /* PowerPC -mrelocatable-lib |
499 | flag */ |
500 | |
501 | /* PowerPC relocations defined by the ABIs */ |
502 | #define R_PPC_NONE 0 |
503 | #define R_PPC_ADDR32 1 /* 32bit absolute address */ |
504 | #define R_PPC_ADDR24 2 /* 26bit address, 2 bits ignored. */ |
505 | #define R_PPC_ADDR16 3 /* 16bit absolute address */ |
506 | #define R_PPC_ADDR16_LO 4 /* lower 16bit of absolute address */ |
507 | #define R_PPC_ADDR16_HI 5 /* high 16bit of absolute address */ |
508 | #define R_PPC_ADDR16_HA 6 /* adjusted high 16bit */ |
509 | #define R_PPC_ADDR14 7 /* 16bit address, 2 bits ignored */ |
510 | #define R_PPC_ADDR14_BRTAKEN 8 |
511 | #define R_PPC_ADDR14_BRNTAKEN 9 |
512 | #define R_PPC_REL24 10 /* PC relative 26 bit */ |
513 | #define R_PPC_REL14 11 /* PC relative 16 bit */ |
514 | #define R_PPC_REL14_BRTAKEN 12 |
515 | #define R_PPC_REL14_BRNTAKEN 13 |
516 | #define R_PPC_GOT16 14 |
517 | #define R_PPC_GOT16_LO 15 |
518 | #define R_PPC_GOT16_HI 16 |
519 | #define R_PPC_GOT16_HA 17 |
520 | #define R_PPC_PLTREL24 18 |
521 | #define R_PPC_COPY 19 |
522 | #define R_PPC_GLOB_DAT 20 |
523 | #define R_PPC_JMP_SLOT 21 |
524 | #define R_PPC_RELATIVE 22 |
525 | #define R_PPC_LOCAL24PC 23 |
526 | #define R_PPC_UADDR32 24 |
527 | #define R_PPC_UADDR16 25 |
528 | #define R_PPC_REL32 26 |
529 | #define R_PPC_PLT32 27 |
530 | #define R_PPC_PLTREL32 28 |
531 | #define R_PPC_PLT16_LO 29 |
532 | #define R_PPC_PLT16_HI 30 |
533 | #define R_PPC_PLT16_HA 31 |
534 | #define R_PPC_SDAREL16 32 |
535 | #define R_PPC_SECTOFF 33 |
536 | #define R_PPC_SECTOFF_LO 34 |
537 | #define R_PPC_SECTOFF_HI 35 |
538 | #define R_PPC_SECTOFF_HA 36 |
539 | /* Keep this the last entry. */ |
540 | #define R_PPC_NUM 37 |
541 | |
542 | /* The remaining relocs are from the Embedded ELF ABI, and are not |
543 | in the SVR4 ELF ABI. */ |
544 | #define R_PPC_EMB_NADDR32 101 |
545 | #define R_PPC_EMB_NADDR16 102 |
546 | #define R_PPC_EMB_NADDR16_LO 103 |
547 | #define R_PPC_EMB_NADDR16_HI 104 |
548 | #define R_PPC_EMB_NADDR16_HA 105 |
549 | #define R_PPC_EMB_SDAI16 106 |
550 | #define R_PPC_EMB_SDA2I16 107 |
551 | #define R_PPC_EMB_SDA2REL 108 |
552 | #define R_PPC_EMB_SDA21 109 /* 16 bit offset in SDA */ |
553 | #define R_PPC_EMB_MRKREF 110 |
554 | #define R_PPC_EMB_RELSEC16 111 |
555 | #define R_PPC_EMB_RELST_LO 112 |
556 | #define R_PPC_EMB_RELST_HI 113 |
557 | #define R_PPC_EMB_RELST_HA 114 |
558 | #define R_PPC_EMB_BIT_FLD 115 |
559 | #define R_PPC_EMB_RELSDA 116 /* 16 bit relative offset in SDA */ |
560 | |
561 | /* Diab tool relocations. */ |
562 | #define R_PPC_DIAB_SDA21_LO 180 /* like EMB_SDA21, but lower 16 bit */ |
563 | #define R_PPC_DIAB_SDA21_HI 181 /* like EMB_SDA21, but high 16 bit */ |
564 | #define R_PPC_DIAB_SDA21_HA 182 /* like EMB_SDA21, adjusted high 16 */ |
565 | #define R_PPC_DIAB_RELSDA_LO 183 /* like EMB_RELSDA, but lower 16 bit */ |
566 | #define R_PPC_DIAB_RELSDA_HI 184 /* like EMB_RELSDA, but high 16 bit */ |
567 | #define R_PPC_DIAB_RELSDA_HA 185 /* like EMB_RELSDA, adjusted high 16 */ |
568 | |
569 | /* This is a phony reloc to handle any old fashioned TOC16 references |
570 | that may still be in object files. */ |
571 | #define R_PPC_TOC16 255 |
572 | |
573 | int valid_elf_image(unsigned long addr); |
574 | |
575 | #endif /* _ELF_H */ |
576 |