FreeBSD/Linux Kernel Cross Reference
sys/sys/exec_elf.h
1 /* $NetBSD: exec_elf.h,v 1.75 2004/02/13 11:36:23 wiz Exp $ */
2
3 /*-
4 * Copyright (c) 1994 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Christos Zoulas.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 #ifndef _SYS_EXEC_ELF_H_
40 #define _SYS_EXEC_ELF_H_
41
42 /*
43 * The current ELF ABI specification is available at:
44 * http://www.sco.com/developers/gabi/
45 *
46 * Current header definitions are in:
47 * http://www.sco.com/developers/gabi/latest/ch4.eheader.html
48 */
49
50 #if defined(_KERNEL) || defined(_STANDALONE)
51 #include <sys/types.h>
52 #else
53 #include <inttypes.h>
54 #endif /* _KERNEL || _STANDALONE */
55
56 #include <machine/elf_machdep.h>
57
58 typedef uint8_t Elf_Byte;
59
60 typedef uint32_t Elf32_Addr;
61 #define ELF32_FSZ_ADDR 4
62 typedef uint32_t Elf32_Off;
63 #define ELF32_FSZ_OFF 4
64 typedef int32_t Elf32_Sword;
65 #define ELF32_FSZ_SWORD 4
66 typedef uint32_t Elf32_Word;
67 #define ELF32_FSZ_WORD 4
68 typedef uint16_t Elf32_Half;
69 #define ELF32_FSZ_HALF 2
70
71 typedef uint64_t Elf64_Addr;
72 #define ELF64_FSZ_ADDR 8
73 typedef uint64_t Elf64_Off;
74 #define ELF64_FSZ_OFF 8
75 typedef int32_t Elf64_Shalf;
76 #define ELF64_FSZ_SHALF 4
77
78 #ifndef ELF64_FSZ_SWORD
79 typedef int32_t Elf64_Sword;
80 #define ELF64_FSZ_SWORD 4
81 #endif /* ELF64_FSZ_SWORD */
82 #ifndef ELF64_FSZ_WORD
83 typedef uint32_t Elf64_Word;
84 #define ELF64_FSZ_WORD 4
85 #endif /* ELF64_FSZ_WORD */
86
87 typedef int64_t Elf64_Sxword;
88 #define ELF64_FSZ_XWORD 8
89 typedef uint64_t Elf64_Xword;
90 #define ELF64_FSZ_XWORD 8
91 typedef uint32_t Elf64_Half;
92 #define ELF64_FSZ_HALF 4
93 typedef uint16_t Elf64_Quarter;
94 #define ELF64_FSZ_QUARTER 2
95
96 /*
97 * ELF Header
98 */
99 #define ELF_NIDENT 16
100
101 typedef struct {
102 unsigned char e_ident[ELF_NIDENT]; /* Id bytes */
103 Elf32_Half e_type; /* file type */
104 Elf32_Half e_machine; /* machine type */
105 Elf32_Word e_version; /* version number */
106 Elf32_Addr e_entry; /* entry point */
107 Elf32_Off e_phoff; /* Program hdr offset */
108 Elf32_Off e_shoff; /* Section hdr offset */
109 Elf32_Word e_flags; /* Processor flags */
110 Elf32_Half e_ehsize; /* sizeof ehdr */
111 Elf32_Half e_phentsize; /* Program header entry size */
112 Elf32_Half e_phnum; /* Number of program headers */
113 Elf32_Half e_shentsize; /* Section header entry size */
114 Elf32_Half e_shnum; /* Number of section headers */
115 Elf32_Half e_shstrndx; /* String table index */
116 } Elf32_Ehdr;
117
118 typedef struct {
119 unsigned char e_ident[ELF_NIDENT]; /* Id bytes */
120 Elf64_Quarter e_type; /* file type */
121 Elf64_Quarter e_machine; /* machine type */
122 Elf64_Half e_version; /* version number */
123 Elf64_Addr e_entry; /* entry point */
124 Elf64_Off e_phoff; /* Program hdr offset */
125 Elf64_Off e_shoff; /* Section hdr offset */
126 Elf64_Half e_flags; /* Processor flags */
127 Elf64_Quarter e_ehsize; /* sizeof ehdr */
128 Elf64_Quarter e_phentsize; /* Program header entry size */
129 Elf64_Quarter e_phnum; /* Number of program headers */
130 Elf64_Quarter e_shentsize; /* Section header entry size */
131 Elf64_Quarter e_shnum; /* Number of section headers */
132 Elf64_Quarter e_shstrndx; /* String table index */
133 } Elf64_Ehdr;
134
135 /* e_ident offsets */
136 #define EI_MAG0 0 /* '\177' */
137 #define EI_MAG1 1 /* 'E' */
138 #define EI_MAG2 2 /* 'L' */
139 #define EI_MAG3 3 /* 'F' */
140 #define EI_CLASS 4 /* File class */
141 #define EI_DATA 5 /* Data encoding */
142 #define EI_VERSION 6 /* File version */
143 #define EI_OSABI 7 /* Operating system/ABI identification */
144 #define EI_ABIVERSION 8 /* ABI version */
145 #define EI_PAD 9 /* Start of padding bytes up to EI_NIDENT*/
146
147 /* e_ident[EI_MAG0,EI_MAG3] */
148 #define ELFMAG0 0x7f
149 #define ELFMAG1 'E'
150 #define ELFMAG2 'L'
151 #define ELFMAG3 'F'
152 #define ELFMAG "\177ELF"
153 #define SELFMAG 4
154
155 /* e_ident[EI_CLASS] */
156 #define ELFCLASSNONE 0 /* Invalid class */
157 #define ELFCLASS32 1 /* 32-bit objects */
158 #define ELFCLASS64 2 /* 64-bit objects */
159 #define ELFCLASSNUM 3
160
161 /* e_ident[EI_DATA] */
162 #define ELFDATANONE 0 /* Invalid data encoding */
163 #define ELFDATA2LSB 1 /* 2's complement values, LSB first */
164 #define ELFDATA2MSB 2 /* 2's complement values, MSB first */
165
166 /* e_ident[EI_VERSION] */
167 #define EV_NONE 0 /* Invalid version */
168 #define EV_CURRENT 1 /* Current version */
169 #define EV_NUM 2
170
171 /* e_ident[EI_OSABI] */
172 #define ELFOSABI_SYSV 0 /* UNIX System V ABI */
173 #define ELFOSABI_HPUX 1 /* HP-UX operating system */
174 #define ELFOSABI_NETBSD 2 /* NetBSD */
175 #define ELFOSABI_LINUX 3 /* GNU/Linux */
176 #define ELFOSABI_HURD 4 /* GNU/Hurd */
177 #define ELFOSABI_86OPEN 5 /* 86Open */
178 #define ELFOSABI_SOLARIS 6 /* Solaris */
179 #define ELFOSABI_MONTEREY 7 /* Monterey */
180 #define ELFOSABI_IRIX 8 /* IRIX */
181 #define ELFOSABI_FREEBSD 9 /* FreeBSD */
182 #define ELFOSABI_TRU64 10 /* TRU64 UNIX */
183 #define ELFOSABI_MODESTO 11 /* Novell Modesto */
184 #define ELFOSABI_OPENBSD 12 /* OpenBSD */
185 /* Unofficial OSABIs follow */
186 #define ELFOSABI_ARM 97 /* ARM */
187 #define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */
188
189 /* e_type */
190 #define ET_NONE 0 /* No file type */
191 #define ET_REL 1 /* Relocatable file */
192 #define ET_EXEC 2 /* Executable file */
193 #define ET_DYN 3 /* Shared object file */
194 #define ET_CORE 4 /* Core file */
195 #define ET_NUM 5
196
197 #define ET_LOOS 0xfe00 /* Operating system specific range */
198 #define ET_HIOS 0xfeff
199 #define ET_LOPROC 0xff00 /* Processor-specific range */
200 #define ET_HIPROC 0xffff
201
202 /* e_machine */
203 #define EM_NONE 0 /* No machine */
204 #define EM_M32 1 /* AT&T WE 32100 */
205 #define EM_SPARC 2 /* SPARC */
206 #define EM_386 3 /* Intel 80386 */
207 #define EM_68K 4 /* Motorola 68000 */
208 #define EM_88K 5 /* Motorola 88000 */
209 #define EM_486 6 /* Intel 80486 */
210 #define EM_860 7 /* Intel 80860 */
211 #define EM_MIPS 8 /* MIPS I Architecture */
212 #define EM_S370 9 /* Amdahl UTS on System/370 */
213 #define EM_MIPS_RS3_LE 10 /* MIPS RS3000 Little-endian */
214 /* 11-14 - Reserved */
215 #define EM_RS6000 11 /* IBM RS/6000 XXX reserved */
216 #define EM_PARISC 15 /* Hewlett-Packard PA-RISC */
217 #define EM_NCUBE 16 /* NCube XXX reserved */
218 #define EM_VPP500 17 /* Fujitsu VPP500 */
219 #define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */
220 #define EM_960 19 /* Intel 80960 */
221 #define EM_PPC 20 /* PowerPC */
222 #define EM_PPC64 21 /* 64-bit PowerPC */
223 /* 22-35 - Reserved */
224 #define EM_V800 36 /* NEC V800 */
225 #define EM_FR20 37 /* Fujitsu FR20 */
226 #define EM_RH32 38 /* TRW RH-32 */
227 #define EM_RCE 39 /* Motorola RCE */
228 #define EM_ARM 40 /* Advanced RISC Machines ARM */
229 #define EM_ALPHA 41 /* DIGITAL Alpha */
230 #define EM_SH 42 /* Hitachi Super-H */
231 #define EM_SPARCV9 43 /* SPARC Version 9 */
232 #define EM_TRICORE 44 /* Siemens Tricore */
233 #define EM_ARC 45 /* Argonaut RISC Core */
234 #define EM_H8_300 46 /* Hitachi H8/300 */
235 #define EM_H8_300H 47 /* Hitachi H8/300H */
236 #define EM_H8S 48 /* Hitachi H8S */
237 #define EM_H8_500 49 /* Hitachi H8/500 */
238 #define EM_IA_64 50 /* Intel Merced Processor */
239 #define EM_MIPS_X 51 /* Stanford MIPS-X */
240 #define EM_COLDFIRE 52 /* Motorola Coldfire */
241 #define EM_68HC12 53 /* Motorola MC68HC12 */
242 #define EM_MMA 54 /* Fujitsu MMA Multimedia Accelerator */
243 #define EM_PCP 55 /* Siemens PCP */
244 #define EM_NCPU 56 /* Sony nCPU embedded RISC processor */
245 #define EM_NDR1 57 /* Denso NDR1 microprocessor */
246 #define EM_STARCORE 58 /* Motorola Star*Core processor */
247 #define EM_ME16 59 /* Toyota ME16 processor */
248 #define EM_ST100 60 /* STMicroelectronics ST100 processor */
249 #define EM_TINYJ 61 /* Advanced Logic Corp. TinyJ embedded family processor */
250 #define EM_X86_64 62 /* AMD x86-64 architecture */
251 #define EM_PDSP 63 /* Sony DSP Processor */
252 #define EM_PDP10 64 /* Digital Equipment Corp. PDP-10 */
253 #define EM_PDP11 65 /* Digital Equipment Corp. PDP-11 */
254 #define EM_FX66 66 /* Siemens FX66 microcontroller */
255 #define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16 bit microcontroller */
256 #define EM_ST7 68 /* STMicroelectronics ST7 8-bit microcontroller */
257 #define EM_68HC16 69 /* Motorola MC68HC16 Microcontroller */
258 #define EM_68HC11 70 /* Motorola MC68HC11 Microcontroller */
259 #define EM_68HC08 71 /* Motorola MC68HC08 Microcontroller */
260 #define EM_68HC05 72 /* Motorola MC68HC05 Microcontroller */
261 #define EM_SVX 73 /* Silicon Graphics SVx */
262 #define EM_ST19 74 /* STMicroelectronics ST19 8-bit CPU */
263 #define EM_VAX 75 /* Digital VAX */
264 #define EM_CRIS 76 /* Axis Communications 32-bit embedded processor */
265 #define EM_JAVELIN 77 /* Infineon Technologies 32-bit embedded CPU */
266 #define EM_FIREPATH 78 /* Element 14 64-bit DSP processor */
267 #define EM_ZSP 79 /* LSI Logic's 16-bit DSP processor */
268 #define EM_MMIX 80 /* Donald Knuth's educational 64-bit processor */
269 #define EM_HUANY 81 /* Harvard's machine-independent format */
270 #define EM_PRISM 82 /* SiTera Prism */
271 #define EM_AVR 83 /* Atmel AVR 8-bit microcontroller */
272 #define EM_FR30 84 /* Fujitsu FR30 */
273 #define EM_D10V 85 /* Mitsubishi D10V */
274 #define EM_D30V 86 /* Mitsubishi D30V */
275 #define EM_V850 87 /* NEC v850 */
276 #define EM_M32R 88 /* Mitsubishi M32R */
277 #define EM_MN10300 89 /* Matsushita MN10300 */
278 #define EM_MN10200 90 /* Matsushita MN10200 */
279 #define EM_PJ 91 /* picoJava */
280 #define EM_OPENRISC 92 /* OpenRISC 32-bit embedded processor */
281 #define EM_ARC_A5 93 /* ARC Cores Tangent-A5 */
282 #define EM_XTENSA 94 /* Tensilica Xtensa Architecture */
283 #define EM_NS32K 97 /* National Semiconductor 32000 series */
284
285 /* Unofficial machine types follow */
286 #define EM_ALPHA_EXP 36902 /* used by NetBSD/alpha; obsolete */
287 #define EM_NUM 36903
288
289 /*
290 * Program Header
291 */
292 typedef struct {
293 Elf32_Word p_type; /* entry type */
294 Elf32_Off p_offset; /* offset */
295 Elf32_Addr p_vaddr; /* virtual address */
296 Elf32_Addr p_paddr; /* physical address */
297 Elf32_Word p_filesz; /* file size */
298 Elf32_Word p_memsz; /* memory size */
299 Elf32_Word p_flags; /* flags */
300 Elf32_Word p_align; /* memory & file alignment */
301 } Elf32_Phdr;
302
303 typedef struct {
304 Elf64_Half p_type; /* entry type */
305 Elf64_Half p_flags; /* flags */
306 Elf64_Off p_offset; /* offset */
307 Elf64_Addr p_vaddr; /* virtual address */
308 Elf64_Addr p_paddr; /* physical address */
309 Elf64_Xword p_filesz; /* file size */
310 Elf64_Xword p_memsz; /* memory size */
311 Elf64_Xword p_align; /* memory & file alignment */
312 } Elf64_Phdr;
313
314 /* p_type */
315 #define PT_NULL 0 /* Program header table entry unused */
316 #define PT_LOAD 1 /* Loadable program segment */
317 #define PT_DYNAMIC 2 /* Dynamic linking information */
318 #define PT_INTERP 3 /* Program interpreter */
319 #define PT_NOTE 4 /* Auxiliary information */
320 #define PT_SHLIB 5 /* Reserved, unspecified semantics */
321 #define PT_PHDR 6 /* Entry for header table itself */
322 #define PT_NUM 7
323
324 #define PT_LOOS 0x60000000 /* OS-specific range */
325 #define PT_HIOS 0x6fffffff
326 #define PT_LOPROC 0x70000000 /* Processor-specific range */
327 #define PT_HIPROC 0x7fffffff
328
329 #define PT_MIPS_REGINFO 0x70000000
330
331 /* p_flags */
332 #define PF_R 0x4 /* Segment is readable */
333 #define PF_W 0x2 /* Segment is writable */
334 #define PF_X 0x1 /* Segment is executable */
335
336 #define PF_MASKOS 0x0ff00000 /* Operating system specific values */
337 #define PF_MASKPROC 0xf0000000 /* Processor-specific values */
338
339 /*
340 * Section Headers
341 */
342 typedef struct {
343 Elf32_Word sh_name; /* section name (.shstrtab index) */
344 Elf32_Word sh_type; /* section type */
345 Elf32_Word sh_flags; /* section flags */
346 Elf32_Addr sh_addr; /* virtual address */
347 Elf32_Off sh_offset; /* file offset */
348 Elf32_Word sh_size; /* section size */
349 Elf32_Word sh_link; /* link to another */
350 Elf32_Word sh_info; /* misc info */
351 Elf32_Word sh_addralign; /* memory alignment */
352 Elf32_Word sh_entsize; /* table entry size */
353 } Elf32_Shdr;
354
355 typedef struct {
356 Elf64_Half sh_name; /* section name (.shstrtab index) */
357 Elf64_Half sh_type; /* section type */
358 Elf64_Xword sh_flags; /* section flags */
359 Elf64_Addr sh_addr; /* virtual address */
360 Elf64_Off sh_offset; /* file offset */
361 Elf64_Xword sh_size; /* section size */
362 Elf64_Half sh_link; /* link to another */
363 Elf64_Half sh_info; /* misc info */
364 Elf64_Xword sh_addralign; /* memory alignment */
365 Elf64_Xword sh_entsize; /* table entry size */
366 } Elf64_Shdr;
367
368 /* sh_type */
369 #define SHT_NULL 0 /* Section header table entry unused */
370 #define SHT_PROGBITS 1 /* Program information */
371 #define SHT_SYMTAB 2 /* Symbol table */
372 #define SHT_STRTAB 3 /* String table */
373 #define SHT_RELA 4 /* Relocation information w/ addend */
374 #define SHT_HASH 5 /* Symbol hash table */
375 #define SHT_DYNAMIC 6 /* Dynamic linking information */
376 #define SHT_NOTE 7 /* Auxiliary information */
377 #define SHT_NOBITS 8 /* No space allocated in file image */
378 #define SHT_REL 9 /* Relocation information w/o addend */
379 #define SHT_SHLIB 10 /* Reserved, unspecified semantics */
380 #define SHT_DYNSYM 11 /* Symbol table for dynamic linker */
381 #define SHT_NUM 12
382
383 #define SHT_LOOS 0x60000000 /* Operating system specific range */
384 #define SHT_HIOS 0x6fffffff
385 #define SHT_LOPROC 0x70000000 /* Processor-specific range */
386 #define SHT_HIPROC 0x7fffffff
387 #define SHT_LOUSER 0x80000000 /* Application-specific range */
388 #define SHT_HIUSER 0xffffffff
389
390 /* sh_flags */
391 #define SHF_WRITE 0x1 /* Section contains writable data */
392 #define SHF_ALLOC 0x2 /* Section occupies memory */
393 #define SHF_EXECINSTR 0x4 /* Section contains executable insns */
394
395 #define SHF_MASKOS 0x0f000000 /* Operating system specific values */
396 #define SHF_MASKPROC 0xf0000000 /* Processor-specific values */
397
398 /*
399 * Symbol Table
400 */
401 typedef struct {
402 Elf32_Word st_name; /* Symbol name (.symtab index) */
403 Elf32_Word st_value; /* value of symbol */
404 Elf32_Word st_size; /* size of symbol */
405 Elf_Byte st_info; /* type / binding attrs */
406 Elf_Byte st_other; /* unused */
407 Elf32_Half st_shndx; /* section index of symbol */
408 } Elf32_Sym;
409
410 typedef struct {
411 Elf64_Half st_name; /* Symbol name (.symtab index) */
412 Elf_Byte st_info; /* type / binding attrs */
413 Elf_Byte st_other; /* unused */
414 Elf64_Quarter st_shndx; /* section index of symbol */
415 Elf64_Addr st_value; /* value of symbol */
416 Elf64_Xword st_size; /* size of symbol */
417 } Elf64_Sym;
418
419 /* Symbol Table index of the undefined symbol */
420 #define ELF_SYM_UNDEFINED 0
421
422 /* st_info: Symbol Bindings */
423 #define STB_LOCAL 0 /* local symbol */
424 #define STB_GLOBAL 1 /* global symbol */
425 #define STB_WEAK 2 /* weakly defined global symbol */
426 #define STB_NUM 3
427
428 #define STB_LOOS 10 /* Operating system specific range */
429 #define STB_HIOS 12
430 #define STB_LOPROC 13 /* Processor-specific range */
431 #define STB_HIPROC 15
432
433 /* st_info: Symbol Types */
434 #define STT_NOTYPE 0 /* Type not specified */
435 #define STT_OBJECT 1 /* Associated with a data object */
436 #define STT_FUNC 2 /* Associated with a function */
437 #define STT_SECTION 3 /* Associated with a section */
438 #define STT_FILE 4 /* Associated with a file name */
439 #define STT_NUM 5
440
441 #define STT_LOOS 10 /* Operating system specific range */
442 #define STT_HIOS 12
443 #define STT_LOPROC 13 /* Processor-specific range */
444 #define STT_HIPROC 15
445
446 /* st_info utility macros */
447 #define ELF32_ST_BIND(info) ((Elf32_Word)(info) >> 4)
448 #define ELF32_ST_TYPE(info) ((Elf32_Word)(info) & 0xf)
449 #define ELF32_ST_INFO(bind,type) ((Elf_Byte)(((bind) << 4) | ((type) & 0xf)))
450
451 #define ELF64_ST_BIND(info) ((Elf64_Xword)(info) >> 4)
452 #define ELF64_ST_TYPE(info) ((Elf64_Xword)(info) & 0xf)
453 #define ELF64_ST_INFO(bind,type) ((Elf_Byte)(((bind) << 4) | ((type) & 0xf)))
454
455 /*
456 * Special section indexes
457 */
458 #define SHN_UNDEF 0 /* Undefined section */
459
460 #define SHN_LORESERVE 0xff00 /* Reserved range */
461 #define SHN_ABS 0xfff1 /* Absolute symbols */
462 #define SHN_COMMON 0xfff2 /* Common symbols */
463 #define SHN_HIRESERVE 0xffff
464
465 #define SHN_LOPROC 0xff00 /* Processor-specific range */
466 #define SHN_HIPROC 0xff1f
467 #define SHN_LOOS 0xff20 /* Operating system specific range */
468 #define SHN_HIOS 0xff3f
469
470 #define SHN_MIPS_ACOMMON 0xff00
471 #define SHN_MIPS_TEXT 0xff01
472 #define SHN_MIPS_DATA 0xff02
473 #define SHN_MIPS_SCOMMON 0xff03
474
475 /*
476 * Relocation Entries
477 */
478 typedef struct {
479 Elf32_Word r_offset; /* where to do it */
480 Elf32_Word r_info; /* index & type of relocation */
481 } Elf32_Rel;
482
483 typedef struct {
484 Elf32_Word r_offset; /* where to do it */
485 Elf32_Word r_info; /* index & type of relocation */
486 Elf32_Sword r_addend; /* adjustment value */
487 } Elf32_Rela;
488
489 /* r_info utility macros */
490 #define ELF32_R_SYM(info) ((info) >> 8)
491 #define ELF32_R_TYPE(info) ((info) & 0xff)
492 #define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type))
493
494 typedef struct {
495 Elf64_Addr r_offset; /* where to do it */
496 Elf64_Xword r_info; /* index & type of relocation */
497 } Elf64_Rel;
498
499 typedef struct {
500 Elf64_Addr r_offset; /* where to do it */
501 Elf64_Xword r_info; /* index & type of relocation */
502 Elf64_Sxword r_addend; /* adjustment value */
503 } Elf64_Rela;
504
505 /* r_info utility macros */
506 #define ELF64_R_SYM(info) ((info) >> 32)
507 #define ELF64_R_TYPE(info) ((info) & 0xffffffff)
508 #define ELF64_R_INFO(sym,type) (((sym) << 32) + (type))
509
510 /*
511 * Dynamic Section structure array
512 */
513 typedef struct {
514 Elf32_Word d_tag; /* entry tag value */
515 union {
516 Elf32_Addr d_ptr;
517 Elf32_Word d_val;
518 } d_un;
519 } Elf32_Dyn;
520
521 typedef struct {
522 Elf64_Xword d_tag; /* entry tag value */
523 union {
524 Elf64_Addr d_ptr;
525 Elf64_Xword d_val;
526 } d_un;
527 } Elf64_Dyn;
528
529 /* d_tag */
530 #define DT_NULL 0 /* Marks end of dynamic array */
531 #define DT_NEEDED 1 /* Name of needed library (DT_STRTAB offset) */
532 #define DT_PLTRELSZ 2 /* Size, in bytes, of relocations in PLT */
533 #define DT_PLTGOT 3 /* Address of PLT and/or GOT */
534 #define DT_HASH 4 /* Address of symbol hash table */
535 #define DT_STRTAB 5 /* Address of string table */
536 #define DT_SYMTAB 6 /* Address of symbol table */
537 #define DT_RELA 7 /* Address of Rela relocation table */
538 #define DT_RELASZ 8 /* Size, in bytes, of DT_RELA table */
539 #define DT_RELAENT 9 /* Size, in bytes, of one DT_RELA entry */
540 #define DT_STRSZ 10 /* Size, in bytes, of DT_STRTAB table */
541 #define DT_SYMENT 11 /* Size, in bytes, of one DT_SYMTAB entry */
542 #define DT_INIT 12 /* Address of initialization function */
543 #define DT_FINI 13 /* Address of termination function */
544 #define DT_SONAME 14 /* Shared object name (DT_STRTAB offset) */
545 #define DT_RPATH 15 /* Library search path (DT_STRTAB offset) */
546 #define DT_SYMBOLIC 16 /* Start symbol search within local object */
547 #define DT_REL 17 /* Address of Rel relocation table */
548 #define DT_RELSZ 18 /* Size, in bytes, of DT_REL table */
549 #define DT_RELENT 19 /* Size, in bytes, of one DT_REL entry */
550 #define DT_PLTREL 20 /* Type of PLT relocation entries */
551 #define DT_DEBUG 21 /* Used for debugging; unspecified */
552 #define DT_TEXTREL 22 /* Relocations might modify non-writable seg */
553 #define DT_JMPREL 23 /* Address of relocations associated with PLT */
554 #define DT_BIND_NOW 24 /* Process all relocations at load-time */
555 #define DT_INIT_ARRAY 25 /* Address of initialization function array */
556 #define DT_FINI_ARRAY 26 /* Size, in bytes, of DT_INIT_ARRAY array */
557 #define DT_INIT_ARRAYSZ 27 /* Address of termination function array */
558 #define DT_FINI_ARRAYSZ 28 /* Size, in bytes, of DT_FINI_ARRAY array*/
559 #define DT_NUM 29
560
561 #define DT_LOOS 0x60000000 /* Operating system specific range */
562 #define DT_HIOS 0x6fffffff
563 #define DT_LOPROC 0x70000000 /* Processor-specific range */
564 #define DT_HIPROC 0x7fffffff
565
566 /*
567 * Auxiliary Vectors
568 */
569 typedef struct {
570 Elf32_Word a_type; /* 32-bit id */
571 Elf32_Word a_v; /* 32-bit id */
572 } Aux32Info;
573
574 typedef struct {
575 Elf64_Half a_type; /* 32-bit id */
576 Elf64_Xword a_v; /* 64-bit id */
577 } Aux64Info;
578
579 /* a_type */
580 #define AT_NULL 0 /* Marks end of array */
581 #define AT_IGNORE 1 /* No meaning, a_un is undefined */
582 #define AT_EXECFD 2 /* Open file descriptor of object file */
583 #define AT_PHDR 3 /* &phdr[0] */
584 #define AT_PHENT 4 /* sizeof(phdr[0]) */
585 #define AT_PHNUM 5 /* # phdr entries */
586 #define AT_PAGESZ 6 /* PAGESIZE */
587 #define AT_BASE 7 /* Interpreter base addr */
588 #define AT_FLAGS 8 /* Processor flags */
589 #define AT_ENTRY 9 /* Entry address of executable */
590 #define AT_DCACHEBSIZE 10 /* Data cache block size */
591 #define AT_ICACHEBSIZE 11 /* Instruction cache block size */
592 #define AT_UCACHEBSIZE 12 /* Unified cache block size */
593
594 /* Vendor specific */
595 #define AT_MIPS_NOTELF 10 /* XXX a_val != 0 -> MIPS XCOFF executable */
596
597 #define AT_EUID 2000 /* euid (solaris compatible numbers) */
598 #define AT_RUID 2001 /* ruid (solaris compatible numbers) */
599 #define AT_EGID 2002 /* egid (solaris compatible numbers) */
600 #define AT_RGID 2003 /* rgid (solaris compatible numbers) */
601
602 /* Solaris kernel specific */
603 #define AT_SUN_LDELF 2004 /* dynamic linker's ELF header */
604 #define AT_SUN_LDSHDR 2005 /* dynamic linker's section header */
605 #define AT_SUN_LDNAME 2006 /* dynamic linker's name */
606 #define AT_SUN_LPGSIZE 2007 /* large pagesize */
607
608 /* Other information */
609 #define AT_SUN_PLATFORM 2008 /* sysinfo(SI_PLATFORM) */
610 #define AT_SUN_HWCAP 2009 /* process hardware capabilities */
611 #define AT_SUN_IFLUSH 2010 /* do we need to flush the instruction cache? */
612 #define AT_SUN_CPU 2011 /* CPU name */
613 /* ibcs2 emulation band aid */
614 #define AT_SUN_EMUL_ENTRY 2012 /* coff entry point */
615 #define AT_SUN_EMUL_EXECFD 2013 /* coff file descriptor */
616 /* Executable's fully resolved name */
617 #define AT_SUN_EXECNAME 2014
618
619 /*
620 * Note Headers
621 */
622 typedef struct {
623 Elf32_Word n_namesz;
624 Elf32_Word n_descsz;
625 Elf32_Word n_type;
626 } Elf32_Nhdr;
627
628 typedef struct {
629 Elf64_Half n_namesz;
630 Elf64_Half n_descsz;
631 Elf64_Half n_type;
632 } Elf64_Nhdr;
633
634 #define ELF_NOTE_TYPE_ABI_TAG 1
635
636 /* GNU-specific note name and description sizes */
637 #define ELF_NOTE_ABI_NAMESZ 4
638 #define ELF_NOTE_ABI_DESCSZ 16
639 /* GNU-specific note name */
640 #define ELF_NOTE_ABI_NAME "GNU\0"
641
642 /* GNU-specific OS/version value stuff */
643 #define ELF_NOTE_ABI_OS_LINUX 0
644 #define ELF_NOTE_ABI_OS_HURD 1
645 #define ELF_NOTE_ABI_OS_SOLARIS 2
646
647 /* NetBSD-specific note type: Emulation name. desc is emul name string. */
648 #define ELF_NOTE_TYPE_NETBSD_TAG 1
649
650 /* NetBSD-specific note name and description sizes */
651 #define ELF_NOTE_NETBSD_NAMESZ 7
652 #define ELF_NOTE_NETBSD_DESCSZ 4
653 /* NetBSD-specific note name */
654 #define ELF_NOTE_NETBSD_NAME "NetBSD\0\0"
655
656 /*
657 * NetBSD-specific core file information.
658 *
659 * NetBSD ELF core files use notes to provide information about
660 * the process's state. The note name is "NetBSD-CORE" for
661 * information that is global to the process, and "NetBSD-CORE@nn",
662 * where "nn" is the lwpid of the LWP that the information belongs
663 * to (such as register state).
664 *
665 * We use the following note identifiers:
666 *
667 * ELF_NOTE_NETBSD_CORE_PROCINFO
668 * Note is a "netbsd_elfcore_procinfo" structure.
669 *
670 * We also use ptrace(2) request numbers (the ones that exist in
671 * machine-dependent space) to identify register info notes. The
672 * info in such notes is in the same format that ptrace(2) would
673 * export that information.
674 *
675 * Please try to keep the members of this structure nicely aligned,
676 * and if you add elements, add them to the end and bump the version.
677 */
678
679 #define ELF_NOTE_NETBSD_CORE_NAME "NetBSD-CORE"
680
681 #define ELF_NOTE_NETBSD_CORE_PROCINFO 1
682
683 #define NETBSD_ELFCORE_PROCINFO_VERSION 1
684
685 struct netbsd_elfcore_procinfo {
686 /* Version 1 fields start here. */
687 uint32_t cpi_version; /* netbsd_elfcore_procinfo version */
688 uint32_t cpi_cpisize; /* sizeof(netbsd_elfcore_procinfo) */
689 uint32_t cpi_signo; /* killing signal */
690 uint32_t cpi_sigcode; /* signal code */
691 uint32_t cpi_sigpend[4]; /* pending signals */
692 uint32_t cpi_sigmask[4]; /* blocked signals */
693 uint32_t cpi_sigignore[4];/* blocked signals */
694 uint32_t cpi_sigcatch[4];/* blocked signals */
695 int32_t cpi_pid; /* process ID */
696 int32_t cpi_ppid; /* parent process ID */
697 int32_t cpi_pgrp; /* process group ID */
698 int32_t cpi_sid; /* session ID */
699 uint32_t cpi_ruid; /* real user ID */
700 uint32_t cpi_euid; /* effective user ID */
701 uint32_t cpi_svuid; /* saved user ID */
702 uint32_t cpi_rgid; /* real group ID */
703 uint32_t cpi_egid; /* effective group ID */
704 uint32_t cpi_svgid; /* saved group ID */
705 uint32_t cpi_nlwps; /* number of LWPs */
706 int8_t cpi_name[32]; /* copy of p->p_comm */
707 /* Add version 2 fields below here. */
708 int32_t cpi_siglwp; /* LWP target of killing signal */
709 };
710
711 #if defined(ELFSIZE)
712 #define CONCAT(x,y) __CONCAT(x,y)
713 #define ELFNAME(x) CONCAT(elf,CONCAT(ELFSIZE,CONCAT(_,x)))
714 #define ELFNAME2(x,y) CONCAT(x,CONCAT(_elf,CONCAT(ELFSIZE,CONCAT(_,y))))
715 #define ELFNAMEEND(x) CONCAT(x,CONCAT(_elf,ELFSIZE))
716 #define ELFDEFNNAME(x) CONCAT(ELF,CONCAT(ELFSIZE,CONCAT(_,x)))
717 #endif
718
719 #if defined(ELFSIZE) && (ELFSIZE == 32)
720 #define Elf_Ehdr Elf32_Ehdr
721 #define Elf_Phdr Elf32_Phdr
722 #define Elf_Shdr Elf32_Shdr
723 #define Elf_Sym Elf32_Sym
724 #define Elf_Rel Elf32_Rel
725 #define Elf_Rela Elf32_Rela
726 #define Elf_Dyn Elf32_Dyn
727 #define Elf_Word Elf32_Word
728 #define Elf_Sword Elf32_Sword
729 #define Elf_Addr Elf32_Addr
730 #define Elf_Off Elf32_Off
731 #define Elf_Nhdr Elf32_Nhdr
732
733 #define ELF_R_SYM ELF32_R_SYM
734 #define ELF_R_TYPE ELF32_R_TYPE
735 #define ELFCLASS ELFCLASS32
736
737 #define ELF_ST_BIND ELF32_ST_BIND
738 #define ELF_ST_TYPE ELF32_ST_TYPE
739 #define ELF_ST_INFO ELF32_ST_INFO
740
741 #define AuxInfo Aux32Info
742 #elif defined(ELFSIZE) && (ELFSIZE == 64)
743 #define Elf_Ehdr Elf64_Ehdr
744 #define Elf_Phdr Elf64_Phdr
745 #define Elf_Shdr Elf64_Shdr
746 #define Elf_Sym Elf64_Sym
747 #define Elf_Rel Elf64_Rel
748 #define Elf_Rela Elf64_Rela
749 #define Elf_Dyn Elf64_Dyn
750 #define Elf_Word Elf64_Word
751 #define Elf_Sword Elf64_Sword
752 #define Elf_Addr Elf64_Addr
753 #define Elf_Off Elf64_Off
754 #define Elf_Nhdr Elf64_Nhdr
755
756 #define ELF_R_SYM ELF64_R_SYM
757 #define ELF_R_TYPE ELF64_R_TYPE
758 #define ELFCLASS ELFCLASS64
759
760 #define ELF_ST_BIND ELF64_ST_BIND
761 #define ELF_ST_TYPE ELF64_ST_TYPE
762 #define ELF_ST_INFO ELF64_ST_INFO
763
764 #define AuxInfo Aux64Info
765 #endif
766
767 #ifdef _KERNEL
768
769 #define ELF_AUX_ENTRIES 12 /* Size of aux array passed to loader */
770 #define ELF32_NO_ADDR (~(Elf32_Addr)0) /* Indicates addr. not yet filled in */
771 #define ELF32_LINK_ADDR ((Elf32_Addr)-2) /* advises to use link address */
772 #define ELF64_NO_ADDR (~(Elf64_Addr)0) /* Indicates addr. not yet filled in */
773 #define ELF64_LINK_ADDR ((Elf64_Addr)-2) /* advises to use link address */
774
775 #if defined(ELFSIZE) && (ELFSIZE == 64)
776 #define ELF_NO_ADDR ELF64_NO_ADDR
777 #define ELF_LINK_ADDR ELF64_LINK_ADDR
778 #elif defined(ELFSIZE) && (ELFSIZE == 32)
779 #define ELF_NO_ADDR ELF32_NO_ADDR
780 #define ELF_LINK_ADDR ELF32_LINK_ADDR
781 #endif
782
783 #ifndef ELF32_EHDR_FLAGS_OK
784 #define ELF32_EHDR_FLAGS_OK(eh) 1
785 #endif
786
787 #ifndef ELF64_EHDR_FLAGS_OK
788 #define ELF64_EHDR_FLAGS_OK(eh) 1
789 #endif
790
791 #if defined(ELFSIZE) && (ELFSIZE == 64)
792 #define ELF_EHDR_FLAGS_OK(eh) ELF64_EHDR_FLAGS_OK(eh)
793 #else
794 #define ELF_EHDR_FLAGS_OK(eh) ELF32_EHDR_FLAGS_OK(eh)
795 #endif
796
797 #if defined(ELFSIZE)
798 struct elf_args {
799 Elf_Addr arg_entry; /* program entry point */
800 Elf_Addr arg_interp; /* Interpreter load address */
801 Elf_Addr arg_phaddr; /* program header address */
802 Elf_Addr arg_phentsize; /* Size of program header */
803 Elf_Addr arg_phnum; /* Number of program headers */
804 };
805 #endif
806
807 #ifndef _LKM
808 #include "opt_execfmt.h"
809 #endif
810
811 #ifdef EXEC_ELF32
812 int exec_elf32_makecmds(struct proc *, struct exec_package *);
813 int elf32_copyargs(struct proc *, struct exec_package *,
814 struct ps_strings *, char **, void *);
815
816 int coredump_elf32(struct lwp *, struct vnode *, struct ucred *);
817 int coredump_writenote_elf32(struct proc *, struct vnode *,
818 struct ucred *, off_t, Elf32_Nhdr *, const char *, void *);
819
820 int elf32_check_header(Elf32_Ehdr *, int);
821 #endif
822
823 #ifdef EXEC_ELF64
824 int exec_elf64_makecmds(struct proc *, struct exec_package *);
825 int elf64_read_from(struct proc *, struct vnode *, u_long, caddr_t, int);
826 int elf64_copyargs(struct proc *, struct exec_package *,
827 struct ps_strings *, char **, void *);
828
829 int coredump_elf64 __P((struct lwp *, struct vnode *, struct ucred *));
830 int coredump_writenote_elf64 __P((struct proc *, struct vnode *,
831 struct ucred *, off_t, Elf64_Nhdr *, const char *, void *));
832
833 int elf64_check_header(Elf64_Ehdr *, int);
834 #endif
835
836 #endif /* _KERNEL */
837
838 #endif /* !_SYS_EXEC_ELF_H_ */
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