FreeBSD/Linux Kernel Cross Reference
sys/sys/exec_elf.h
1 /* $NetBSD: exec_elf.h,v 1.81 2005/02/26 22:25:34 perry 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 #define EI_NIDENT 16 /* First non-ident header byte */
147
148 /* e_ident[EI_MAG0,EI_MAG3] */
149 #define ELFMAG0 0x7f
150 #define ELFMAG1 'E'
151 #define ELFMAG2 'L'
152 #define ELFMAG3 'F'
153 #define ELFMAG "\177ELF"
154 #define SELFMAG 4
155
156 /* e_ident[EI_CLASS] */
157 #define ELFCLASSNONE 0 /* Invalid class */
158 #define ELFCLASS32 1 /* 32-bit objects */
159 #define ELFCLASS64 2 /* 64-bit objects */
160 #define ELFCLASSNUM 3
161
162 /* e_ident[EI_DATA] */
163 #define ELFDATANONE 0 /* Invalid data encoding */
164 #define ELFDATA2LSB 1 /* 2's complement values, LSB first */
165 #define ELFDATA2MSB 2 /* 2's complement values, MSB first */
166
167 /* e_ident[EI_VERSION] */
168 #define EV_NONE 0 /* Invalid version */
169 #define EV_CURRENT 1 /* Current version */
170 #define EV_NUM 2
171
172 /* e_ident[EI_OSABI] */
173 #define ELFOSABI_SYSV 0 /* UNIX System V ABI */
174 #define ELFOSABI_HPUX 1 /* HP-UX operating system */
175 #define ELFOSABI_NETBSD 2 /* NetBSD */
176 #define ELFOSABI_LINUX 3 /* GNU/Linux */
177 #define ELFOSABI_HURD 4 /* GNU/Hurd */
178 #define ELFOSABI_86OPEN 5 /* 86Open */
179 #define ELFOSABI_SOLARIS 6 /* Solaris */
180 #define ELFOSABI_MONTEREY 7 /* Monterey */
181 #define ELFOSABI_IRIX 8 /* IRIX */
182 #define ELFOSABI_FREEBSD 9 /* FreeBSD */
183 #define ELFOSABI_TRU64 10 /* TRU64 UNIX */
184 #define ELFOSABI_MODESTO 11 /* Novell Modesto */
185 #define ELFOSABI_OPENBSD 12 /* OpenBSD */
186 /* Unofficial OSABIs follow */
187 #define ELFOSABI_ARM 97 /* ARM */
188 #define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */
189
190 /* e_type */
191 #define ET_NONE 0 /* No file type */
192 #define ET_REL 1 /* Relocatable file */
193 #define ET_EXEC 2 /* Executable file */
194 #define ET_DYN 3 /* Shared object file */
195 #define ET_CORE 4 /* Core file */
196 #define ET_NUM 5
197
198 #define ET_LOOS 0xfe00 /* Operating system specific range */
199 #define ET_HIOS 0xfeff
200 #define ET_LOPROC 0xff00 /* Processor-specific range */
201 #define ET_HIPROC 0xffff
202
203 /* e_machine */
204 #define EM_NONE 0 /* No machine */
205 #define EM_M32 1 /* AT&T WE 32100 */
206 #define EM_SPARC 2 /* SPARC */
207 #define EM_386 3 /* Intel 80386 */
208 #define EM_68K 4 /* Motorola 68000 */
209 #define EM_88K 5 /* Motorola 88000 */
210 #define EM_486 6 /* Intel 80486 */
211 #define EM_860 7 /* Intel 80860 */
212 #define EM_MIPS 8 /* MIPS I Architecture */
213 #define EM_S370 9 /* Amdahl UTS on System/370 */
214 #define EM_MIPS_RS3_LE 10 /* MIPS RS3000 Little-endian */
215 /* 11-14 - Reserved */
216 #define EM_RS6000 11 /* IBM RS/6000 XXX reserved */
217 #define EM_PARISC 15 /* Hewlett-Packard PA-RISC */
218 #define EM_NCUBE 16 /* NCube XXX reserved */
219 #define EM_VPP500 17 /* Fujitsu VPP500 */
220 #define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */
221 #define EM_960 19 /* Intel 80960 */
222 #define EM_PPC 20 /* PowerPC */
223 #define EM_PPC64 21 /* 64-bit PowerPC */
224 /* 22-35 - Reserved */
225 #define EM_V800 36 /* NEC V800 */
226 #define EM_FR20 37 /* Fujitsu FR20 */
227 #define EM_RH32 38 /* TRW RH-32 */
228 #define EM_RCE 39 /* Motorola RCE */
229 #define EM_ARM 40 /* Advanced RISC Machines ARM */
230 #define EM_ALPHA 41 /* DIGITAL Alpha */
231 #define EM_SH 42 /* Hitachi Super-H */
232 #define EM_SPARCV9 43 /* SPARC Version 9 */
233 #define EM_TRICORE 44 /* Siemens Tricore */
234 #define EM_ARC 45 /* Argonaut RISC Core */
235 #define EM_H8_300 46 /* Hitachi H8/300 */
236 #define EM_H8_300H 47 /* Hitachi H8/300H */
237 #define EM_H8S 48 /* Hitachi H8S */
238 #define EM_H8_500 49 /* Hitachi H8/500 */
239 #define EM_IA_64 50 /* Intel Merced Processor */
240 #define EM_MIPS_X 51 /* Stanford MIPS-X */
241 #define EM_COLDFIRE 52 /* Motorola Coldfire */
242 #define EM_68HC12 53 /* Motorola MC68HC12 */
243 #define EM_MMA 54 /* Fujitsu MMA Multimedia Accelerator */
244 #define EM_PCP 55 /* Siemens PCP */
245 #define EM_NCPU 56 /* Sony nCPU embedded RISC processor */
246 #define EM_NDR1 57 /* Denso NDR1 microprocessor */
247 #define EM_STARCORE 58 /* Motorola Star*Core processor */
248 #define EM_ME16 59 /* Toyota ME16 processor */
249 #define EM_ST100 60 /* STMicroelectronics ST100 processor */
250 #define EM_TINYJ 61 /* Advanced Logic Corp. TinyJ embedded family processor */
251 #define EM_X86_64 62 /* AMD x86-64 architecture */
252 #define EM_PDSP 63 /* Sony DSP Processor */
253 #define EM_PDP10 64 /* Digital Equipment Corp. PDP-10 */
254 #define EM_PDP11 65 /* Digital Equipment Corp. PDP-11 */
255 #define EM_FX66 66 /* Siemens FX66 microcontroller */
256 #define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16 bit microcontroller */
257 #define EM_ST7 68 /* STMicroelectronics ST7 8-bit microcontroller */
258 #define EM_68HC16 69 /* Motorola MC68HC16 Microcontroller */
259 #define EM_68HC11 70 /* Motorola MC68HC11 Microcontroller */
260 #define EM_68HC08 71 /* Motorola MC68HC08 Microcontroller */
261 #define EM_68HC05 72 /* Motorola MC68HC05 Microcontroller */
262 #define EM_SVX 73 /* Silicon Graphics SVx */
263 #define EM_ST19 74 /* STMicroelectronics ST19 8-bit CPU */
264 #define EM_VAX 75 /* Digital VAX */
265 #define EM_CRIS 76 /* Axis Communications 32-bit embedded processor */
266 #define EM_JAVELIN 77 /* Infineon Technologies 32-bit embedded CPU */
267 #define EM_FIREPATH 78 /* Element 14 64-bit DSP processor */
268 #define EM_ZSP 79 /* LSI Logic's 16-bit DSP processor */
269 #define EM_MMIX 80 /* Donald Knuth's educational 64-bit processor */
270 #define EM_HUANY 81 /* Harvard's machine-independent format */
271 #define EM_PRISM 82 /* SiTera Prism */
272 #define EM_AVR 83 /* Atmel AVR 8-bit microcontroller */
273 #define EM_FR30 84 /* Fujitsu FR30 */
274 #define EM_D10V 85 /* Mitsubishi D10V */
275 #define EM_D30V 86 /* Mitsubishi D30V */
276 #define EM_V850 87 /* NEC v850 */
277 #define EM_M32R 88 /* Mitsubishi M32R */
278 #define EM_MN10300 89 /* Matsushita MN10300 */
279 #define EM_MN10200 90 /* Matsushita MN10200 */
280 #define EM_PJ 91 /* picoJava */
281 #define EM_OPENRISC 92 /* OpenRISC 32-bit embedded processor */
282 #define EM_ARC_A5 93 /* ARC Cores Tangent-A5 */
283 #define EM_XTENSA 94 /* Tensilica Xtensa Architecture */
284 #define EM_NS32K 97 /* National Semiconductor 32000 series */
285
286 /* Unofficial machine types follow */
287 #define EM_ALPHA_EXP 36902 /* used by NetBSD/alpha; obsolete */
288 #define EM_NUM 36903
289
290 /*
291 * Program Header
292 */
293 typedef struct {
294 Elf32_Word p_type; /* entry type */
295 Elf32_Off p_offset; /* offset */
296 Elf32_Addr p_vaddr; /* virtual address */
297 Elf32_Addr p_paddr; /* physical address */
298 Elf32_Word p_filesz; /* file size */
299 Elf32_Word p_memsz; /* memory size */
300 Elf32_Word p_flags; /* flags */
301 Elf32_Word p_align; /* memory & file alignment */
302 } Elf32_Phdr;
303
304 typedef struct {
305 Elf64_Half p_type; /* entry type */
306 Elf64_Half p_flags; /* flags */
307 Elf64_Off p_offset; /* offset */
308 Elf64_Addr p_vaddr; /* virtual address */
309 Elf64_Addr p_paddr; /* physical address */
310 Elf64_Xword p_filesz; /* file size */
311 Elf64_Xword p_memsz; /* memory size */
312 Elf64_Xword p_align; /* memory & file alignment */
313 } Elf64_Phdr;
314
315 /* p_type */
316 #define PT_NULL 0 /* Program header table entry unused */
317 #define PT_LOAD 1 /* Loadable program segment */
318 #define PT_DYNAMIC 2 /* Dynamic linking information */
319 #define PT_INTERP 3 /* Program interpreter */
320 #define PT_NOTE 4 /* Auxiliary information */
321 #define PT_SHLIB 5 /* Reserved, unspecified semantics */
322 #define PT_PHDR 6 /* Entry for header table itself */
323 #define PT_NUM 7
324
325 #define PT_LOOS 0x60000000 /* OS-specific range */
326 #define PT_HIOS 0x6fffffff
327 #define PT_LOPROC 0x70000000 /* Processor-specific range */
328 #define PT_HIPROC 0x7fffffff
329
330 #define PT_MIPS_REGINFO 0x70000000
331
332 /* p_flags */
333 #define PF_R 0x4 /* Segment is readable */
334 #define PF_W 0x2 /* Segment is writable */
335 #define PF_X 0x1 /* Segment is executable */
336
337 #define PF_MASKOS 0x0ff00000 /* Operating system specific values */
338 #define PF_MASKPROC 0xf0000000 /* Processor-specific values */
339
340 /*
341 * Section Headers
342 */
343 typedef struct {
344 Elf32_Word sh_name; /* section name (.shstrtab index) */
345 Elf32_Word sh_type; /* section type */
346 Elf32_Word sh_flags; /* section flags */
347 Elf32_Addr sh_addr; /* virtual address */
348 Elf32_Off sh_offset; /* file offset */
349 Elf32_Word sh_size; /* section size */
350 Elf32_Word sh_link; /* link to another */
351 Elf32_Word sh_info; /* misc info */
352 Elf32_Word sh_addralign; /* memory alignment */
353 Elf32_Word sh_entsize; /* table entry size */
354 } Elf32_Shdr;
355
356 typedef struct {
357 Elf64_Half sh_name; /* section name (.shstrtab index) */
358 Elf64_Half sh_type; /* section type */
359 Elf64_Xword sh_flags; /* section flags */
360 Elf64_Addr sh_addr; /* virtual address */
361 Elf64_Off sh_offset; /* file offset */
362 Elf64_Xword sh_size; /* section size */
363 Elf64_Half sh_link; /* link to another */
364 Elf64_Half sh_info; /* misc info */
365 Elf64_Xword sh_addralign; /* memory alignment */
366 Elf64_Xword sh_entsize; /* table entry size */
367 } Elf64_Shdr;
368
369 /* sh_type */
370 #define SHT_NULL 0 /* Section header table entry unused */
371 #define SHT_PROGBITS 1 /* Program information */
372 #define SHT_SYMTAB 2 /* Symbol table */
373 #define SHT_STRTAB 3 /* String table */
374 #define SHT_RELA 4 /* Relocation information w/ addend */
375 #define SHT_HASH 5 /* Symbol hash table */
376 #define SHT_DYNAMIC 6 /* Dynamic linking information */
377 #define SHT_NOTE 7 /* Auxiliary information */
378 #define SHT_NOBITS 8 /* No space allocated in file image */
379 #define SHT_REL 9 /* Relocation information w/o addend */
380 #define SHT_SHLIB 10 /* Reserved, unspecified semantics */
381 #define SHT_DYNSYM 11 /* Symbol table for dynamic linker */
382 #define SHT_NUM 12
383
384 #define SHT_LOOS 0x60000000 /* Operating system specific range */
385 #define SHT_HIOS 0x6fffffff
386 #define SHT_LOPROC 0x70000000 /* Processor-specific range */
387 #define SHT_HIPROC 0x7fffffff
388 #define SHT_LOUSER 0x80000000 /* Application-specific range */
389 #define SHT_HIUSER 0xffffffff
390
391 /* sh_flags */
392 #define SHF_WRITE 0x1 /* Section contains writable data */
393 #define SHF_ALLOC 0x2 /* Section occupies memory */
394 #define SHF_EXECINSTR 0x4 /* Section contains executable insns */
395
396 #define SHF_MASKOS 0x0f000000 /* Operating system specific values */
397 #define SHF_MASKPROC 0xf0000000 /* Processor-specific values */
398
399 /*
400 * Symbol Table
401 */
402 typedef struct {
403 Elf32_Word st_name; /* Symbol name (.symtab index) */
404 Elf32_Word st_value; /* value of symbol */
405 Elf32_Word st_size; /* size of symbol */
406 Elf_Byte st_info; /* type / binding attrs */
407 Elf_Byte st_other; /* unused */
408 Elf32_Half st_shndx; /* section index of symbol */
409 } Elf32_Sym;
410
411 typedef struct {
412 Elf64_Half st_name; /* Symbol name (.symtab index) */
413 Elf_Byte st_info; /* type / binding attrs */
414 Elf_Byte st_other; /* unused */
415 Elf64_Quarter st_shndx; /* section index of symbol */
416 Elf64_Addr st_value; /* value of symbol */
417 Elf64_Xword st_size; /* size of symbol */
418 } Elf64_Sym;
419
420 /* Symbol Table index of the undefined symbol */
421 #define ELF_SYM_UNDEFINED 0
422
423 #define STN_UNDEF 0 /* undefined index */
424
425 /* st_info: Symbol Bindings */
426 #define STB_LOCAL 0 /* local symbol */
427 #define STB_GLOBAL 1 /* global symbol */
428 #define STB_WEAK 2 /* weakly defined global symbol */
429 #define STB_NUM 3
430
431 #define STB_LOOS 10 /* Operating system specific range */
432 #define STB_HIOS 12
433 #define STB_LOPROC 13 /* Processor-specific range */
434 #define STB_HIPROC 15
435
436 /* st_info: Symbol Types */
437 #define STT_NOTYPE 0 /* Type not specified */
438 #define STT_OBJECT 1 /* Associated with a data object */
439 #define STT_FUNC 2 /* Associated with a function */
440 #define STT_SECTION 3 /* Associated with a section */
441 #define STT_FILE 4 /* Associated with a file name */
442 #define STT_NUM 5
443
444 #define STT_LOOS 10 /* Operating system specific range */
445 #define STT_HIOS 12
446 #define STT_LOPROC 13 /* Processor-specific range */
447 #define STT_HIPROC 15
448
449 /* st_other: Visibility Types */
450 #define STV_DEFAULT 0 /* use binding type */
451 #define STV_INTERNAL 1 /* not referenced from outside */
452 #define STV_HIDDEN 2 /* not visible, may be used via ptr */
453 #define STV_PROTECTED 3 /* visible, not preemptible */
454
455 /* st_info/st_other utility macros */
456 #define ELF_ST_BIND(info) ((uint32_t)(info) >> 4)
457 #define ELF_ST_TYPE(info) ((uint32_t)(info) & 0xf)
458 #define ELF_ST_INFO(bind,type) ((Elf_Byte)(((bind) << 4) | \
459 ((type) & 0xf)))
460 #define ELF_ST_VISIBILITY(other) ((uint32_t)(other) & 3)
461
462 /*
463 * Special section indexes
464 */
465 #define SHN_UNDEF 0 /* Undefined section */
466
467 #define SHN_LORESERVE 0xff00 /* Reserved range */
468 #define SHN_ABS 0xfff1 /* Absolute symbols */
469 #define SHN_COMMON 0xfff2 /* Common symbols */
470 #define SHN_HIRESERVE 0xffff
471
472 #define SHN_LOPROC 0xff00 /* Processor-specific range */
473 #define SHN_HIPROC 0xff1f
474 #define SHN_LOOS 0xff20 /* Operating system specific range */
475 #define SHN_HIOS 0xff3f
476
477 #define SHN_MIPS_ACOMMON 0xff00
478 #define SHN_MIPS_TEXT 0xff01
479 #define SHN_MIPS_DATA 0xff02
480 #define SHN_MIPS_SCOMMON 0xff03
481
482 /*
483 * Relocation Entries
484 */
485 typedef struct {
486 Elf32_Word r_offset; /* where to do it */
487 Elf32_Word r_info; /* index & type of relocation */
488 } Elf32_Rel;
489
490 typedef struct {
491 Elf32_Word r_offset; /* where to do it */
492 Elf32_Word r_info; /* index & type of relocation */
493 Elf32_Sword r_addend; /* adjustment value */
494 } Elf32_Rela;
495
496 /* r_info utility macros */
497 #define ELF32_R_SYM(info) ((info) >> 8)
498 #define ELF32_R_TYPE(info) ((info) & 0xff)
499 #define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type))
500
501 typedef struct {
502 Elf64_Addr r_offset; /* where to do it */
503 Elf64_Xword r_info; /* index & type of relocation */
504 } Elf64_Rel;
505
506 typedef struct {
507 Elf64_Addr r_offset; /* where to do it */
508 Elf64_Xword r_info; /* index & type of relocation */
509 Elf64_Sxword r_addend; /* adjustment value */
510 } Elf64_Rela;
511
512 /* r_info utility macros */
513 #define ELF64_R_SYM(info) ((info) >> 32)
514 #define ELF64_R_TYPE(info) ((info) & 0xffffffff)
515 #define ELF64_R_INFO(sym,type) (((sym) << 32) + (type))
516
517 /*
518 * Dynamic Section structure array
519 */
520 typedef struct {
521 Elf32_Word d_tag; /* entry tag value */
522 union {
523 Elf32_Addr d_ptr;
524 Elf32_Word d_val;
525 } d_un;
526 } Elf32_Dyn;
527
528 typedef struct {
529 Elf64_Xword d_tag; /* entry tag value */
530 union {
531 Elf64_Addr d_ptr;
532 Elf64_Xword d_val;
533 } d_un;
534 } Elf64_Dyn;
535
536 /* d_tag */
537 #define DT_NULL 0 /* Marks end of dynamic array */
538 #define DT_NEEDED 1 /* Name of needed library (DT_STRTAB offset) */
539 #define DT_PLTRELSZ 2 /* Size, in bytes, of relocations in PLT */
540 #define DT_PLTGOT 3 /* Address of PLT and/or GOT */
541 #define DT_HASH 4 /* Address of symbol hash table */
542 #define DT_STRTAB 5 /* Address of string table */
543 #define DT_SYMTAB 6 /* Address of symbol table */
544 #define DT_RELA 7 /* Address of Rela relocation table */
545 #define DT_RELASZ 8 /* Size, in bytes, of DT_RELA table */
546 #define DT_RELAENT 9 /* Size, in bytes, of one DT_RELA entry */
547 #define DT_STRSZ 10 /* Size, in bytes, of DT_STRTAB table */
548 #define DT_SYMENT 11 /* Size, in bytes, of one DT_SYMTAB entry */
549 #define DT_INIT 12 /* Address of initialization function */
550 #define DT_FINI 13 /* Address of termination function */
551 #define DT_SONAME 14 /* Shared object name (DT_STRTAB offset) */
552 #define DT_RPATH 15 /* Library search path (DT_STRTAB offset) */
553 #define DT_SYMBOLIC 16 /* Start symbol search within local object */
554 #define DT_REL 17 /* Address of Rel relocation table */
555 #define DT_RELSZ 18 /* Size, in bytes, of DT_REL table */
556 #define DT_RELENT 19 /* Size, in bytes, of one DT_REL entry */
557 #define DT_PLTREL 20 /* Type of PLT relocation entries */
558 #define DT_DEBUG 21 /* Used for debugging; unspecified */
559 #define DT_TEXTREL 22 /* Relocations might modify non-writable seg */
560 #define DT_JMPREL 23 /* Address of relocations associated with PLT */
561 #define DT_BIND_NOW 24 /* Process all relocations at load-time */
562 #define DT_INIT_ARRAY 25 /* Address of initialization function array */
563 #define DT_FINI_ARRAY 26 /* Size, in bytes, of DT_INIT_ARRAY array */
564 #define DT_INIT_ARRAYSZ 27 /* Address of termination function array */
565 #define DT_FINI_ARRAYSZ 28 /* Size, in bytes, of DT_FINI_ARRAY array*/
566 #define DT_NUM 29
567
568 #define DT_LOOS 0x60000000 /* Operating system specific range */
569 #define DT_HIOS 0x6fffffff
570 #define DT_LOPROC 0x70000000 /* Processor-specific range */
571 #define DT_HIPROC 0x7fffffff
572
573 /*
574 * Auxiliary Vectors
575 */
576 typedef struct {
577 Elf32_Word a_type; /* 32-bit id */
578 Elf32_Word a_v; /* 32-bit id */
579 } Aux32Info;
580
581 typedef struct {
582 Elf64_Half a_type; /* 32-bit id */
583 Elf64_Xword a_v; /* 64-bit id */
584 } Aux64Info;
585
586 /* a_type */
587 #define AT_NULL 0 /* Marks end of array */
588 #define AT_IGNORE 1 /* No meaning, a_un is undefined */
589 #define AT_EXECFD 2 /* Open file descriptor of object file */
590 #define AT_PHDR 3 /* &phdr[0] */
591 #define AT_PHENT 4 /* sizeof(phdr[0]) */
592 #define AT_PHNUM 5 /* # phdr entries */
593 #define AT_PAGESZ 6 /* PAGESIZE */
594 #define AT_BASE 7 /* Interpreter base addr */
595 #define AT_FLAGS 8 /* Processor flags */
596 #define AT_ENTRY 9 /* Entry address of executable */
597 #define AT_DCACHEBSIZE 10 /* Data cache block size */
598 #define AT_ICACHEBSIZE 11 /* Instruction cache block size */
599 #define AT_UCACHEBSIZE 12 /* Unified cache block size */
600
601 /* Vendor specific */
602 #define AT_MIPS_NOTELF 10 /* XXX a_val != 0 -> MIPS XCOFF executable */
603
604 #define AT_EUID 2000 /* euid (solaris compatible numbers) */
605 #define AT_RUID 2001 /* ruid (solaris compatible numbers) */
606 #define AT_EGID 2002 /* egid (solaris compatible numbers) */
607 #define AT_RGID 2003 /* rgid (solaris compatible numbers) */
608
609 /* Solaris kernel specific */
610 #define AT_SUN_LDELF 2004 /* dynamic linker's ELF header */
611 #define AT_SUN_LDSHDR 2005 /* dynamic linker's section header */
612 #define AT_SUN_LDNAME 2006 /* dynamic linker's name */
613 #define AT_SUN_LPGSIZE 2007 /* large pagesize */
614
615 /* Other information */
616 #define AT_SUN_PLATFORM 2008 /* sysinfo(SI_PLATFORM) */
617 #define AT_SUN_HWCAP 2009 /* process hardware capabilities */
618 #define AT_SUN_IFLUSH 2010 /* do we need to flush the instruction cache? */
619 #define AT_SUN_CPU 2011 /* CPU name */
620 /* ibcs2 emulation band aid */
621 #define AT_SUN_EMUL_ENTRY 2012 /* coff entry point */
622 #define AT_SUN_EMUL_EXECFD 2013 /* coff file descriptor */
623 /* Executable's fully resolved name */
624 #define AT_SUN_EXECNAME 2014
625
626 /*
627 * Note Headers
628 */
629 typedef struct {
630 Elf32_Word n_namesz;
631 Elf32_Word n_descsz;
632 Elf32_Word n_type;
633 } Elf32_Nhdr;
634
635 typedef struct {
636 Elf64_Half n_namesz;
637 Elf64_Half n_descsz;
638 Elf64_Half n_type;
639 } Elf64_Nhdr;
640
641 #define ELF_NOTE_TYPE_ABI_TAG 1
642
643 /* GNU-specific note name and description sizes */
644 #define ELF_NOTE_ABI_NAMESZ 4
645 #define ELF_NOTE_ABI_DESCSZ 16
646 /* GNU-specific note name */
647 #define ELF_NOTE_ABI_NAME "GNU\0"
648
649 /* GNU-specific OS/version value stuff */
650 #define ELF_NOTE_ABI_OS_LINUX 0
651 #define ELF_NOTE_ABI_OS_HURD 1
652 #define ELF_NOTE_ABI_OS_SOLARIS 2
653
654 /* NetBSD-specific note type: Emulation name. desc is emul name string. */
655 #define ELF_NOTE_TYPE_NETBSD_TAG 1
656
657 /* NetBSD-specific note name and description sizes */
658 #define ELF_NOTE_NETBSD_NAMESZ 7
659 #define ELF_NOTE_NETBSD_DESCSZ 4
660 /* NetBSD-specific note name */
661 #define ELF_NOTE_NETBSD_NAME "NetBSD\0\0"
662
663 /*
664 * NetBSD-specific core file information.
665 *
666 * NetBSD ELF core files use notes to provide information about
667 * the process's state. The note name is "NetBSD-CORE" for
668 * information that is global to the process, and "NetBSD-CORE@nn",
669 * where "nn" is the lwpid of the LWP that the information belongs
670 * to (such as register state).
671 *
672 * We use the following note identifiers:
673 *
674 * ELF_NOTE_NETBSD_CORE_PROCINFO
675 * Note is a "netbsd_elfcore_procinfo" structure.
676 *
677 * We also use ptrace(2) request numbers (the ones that exist in
678 * machine-dependent space) to identify register info notes. The
679 * info in such notes is in the same format that ptrace(2) would
680 * export that information.
681 *
682 * Please try to keep the members of this structure nicely aligned,
683 * and if you add elements, add them to the end and bump the version.
684 */
685
686 #define ELF_NOTE_NETBSD_CORE_NAME "NetBSD-CORE"
687
688 #define ELF_NOTE_NETBSD_CORE_PROCINFO 1
689
690 #define NETBSD_ELFCORE_PROCINFO_VERSION 1
691
692 struct netbsd_elfcore_procinfo {
693 /* Version 1 fields start here. */
694 uint32_t cpi_version; /* netbsd_elfcore_procinfo version */
695 uint32_t cpi_cpisize; /* sizeof(netbsd_elfcore_procinfo) */
696 uint32_t cpi_signo; /* killing signal */
697 uint32_t cpi_sigcode; /* signal code */
698 uint32_t cpi_sigpend[4]; /* pending signals */
699 uint32_t cpi_sigmask[4]; /* blocked signals */
700 uint32_t cpi_sigignore[4];/* blocked signals */
701 uint32_t cpi_sigcatch[4];/* blocked signals */
702 int32_t cpi_pid; /* process ID */
703 int32_t cpi_ppid; /* parent process ID */
704 int32_t cpi_pgrp; /* process group ID */
705 int32_t cpi_sid; /* session ID */
706 uint32_t cpi_ruid; /* real user ID */
707 uint32_t cpi_euid; /* effective user ID */
708 uint32_t cpi_svuid; /* saved user ID */
709 uint32_t cpi_rgid; /* real group ID */
710 uint32_t cpi_egid; /* effective group ID */
711 uint32_t cpi_svgid; /* saved group ID */
712 uint32_t cpi_nlwps; /* number of LWPs */
713 int8_t cpi_name[32]; /* copy of p->p_comm */
714 /* Add version 2 fields below here. */
715 int32_t cpi_siglwp; /* LWP target of killing signal */
716 };
717
718 #if defined(ELFSIZE)
719 #define CONCAT(x,y) __CONCAT(x,y)
720 #define ELFNAME(x) CONCAT(elf,CONCAT(ELFSIZE,CONCAT(_,x)))
721 #define ELFNAME2(x,y) CONCAT(x,CONCAT(_elf,CONCAT(ELFSIZE,CONCAT(_,y))))
722 #define ELFNAMEEND(x) CONCAT(x,CONCAT(_elf,ELFSIZE))
723 #define ELFDEFNNAME(x) CONCAT(ELF,CONCAT(ELFSIZE,CONCAT(_,x)))
724 #endif
725
726 #if defined(ELFSIZE) && (ELFSIZE == 32)
727 #define Elf_Ehdr Elf32_Ehdr
728 #define Elf_Phdr Elf32_Phdr
729 #define Elf_Shdr Elf32_Shdr
730 #define Elf_Sym Elf32_Sym
731 #define Elf_Rel Elf32_Rel
732 #define Elf_Rela Elf32_Rela
733 #define Elf_Dyn Elf32_Dyn
734 #define Elf_Word Elf32_Word
735 #define Elf_Sword Elf32_Sword
736 #define Elf_Addr Elf32_Addr
737 #define Elf_Off Elf32_Off
738 #define Elf_Nhdr Elf32_Nhdr
739
740 #define ELF_R_SYM ELF32_R_SYM
741 #define ELF_R_TYPE ELF32_R_TYPE
742 #define ELFCLASS ELFCLASS32
743
744 #define AuxInfo Aux32Info
745 #elif defined(ELFSIZE) && (ELFSIZE == 64)
746 #define Elf_Ehdr Elf64_Ehdr
747 #define Elf_Phdr Elf64_Phdr
748 #define Elf_Shdr Elf64_Shdr
749 #define Elf_Sym Elf64_Sym
750 #define Elf_Rel Elf64_Rel
751 #define Elf_Rela Elf64_Rela
752 #define Elf_Dyn Elf64_Dyn
753 #define Elf_Word Elf64_Word
754 #define Elf_Sword Elf64_Sword
755 #define Elf_Addr Elf64_Addr
756 #define Elf_Off Elf64_Off
757 #define Elf_Nhdr Elf64_Nhdr
758
759 #define ELF_R_SYM ELF64_R_SYM
760 #define ELF_R_TYPE ELF64_R_TYPE
761 #define ELFCLASS ELFCLASS64
762
763 #define AuxInfo Aux64Info
764 #endif
765
766 #define ELF32_ST_BIND(info) ELF_ST_BIND(info)
767 #define ELF32_ST_TYPE(info) ELF_ST_TYPE(info)
768 #define ELF32_ST_INFO(bind,type) ELF_ST_INFO(bind,type)
769 #define ELF32_ST_VISIBILITY(other) ELF_ST_VISIBILITY(other)
770
771 #define ELF64_ST_BIND(info) ELF_ST_BIND(info)
772 #define ELF64_ST_TYPE(info) ELF_ST_TYPE(info)
773 #define ELF64_ST_INFO(bind,type) ELF_ST_INFO(bind,type)
774 #define ELF64_ST_VISIBILITY(other) ELF_ST_VISIBILITY(other)
775
776 #ifdef _KERNEL
777
778 #define ELF_AUX_ENTRIES 12 /* Size of aux array passed to loader */
779 #define ELF32_NO_ADDR (~(Elf32_Addr)0) /* Indicates addr. not yet filled in */
780 #define ELF32_LINK_ADDR ((Elf32_Addr)-2) /* advises to use link address */
781 #define ELF64_NO_ADDR (~(Elf64_Addr)0) /* Indicates addr. not yet filled in */
782 #define ELF64_LINK_ADDR ((Elf64_Addr)-2) /* advises to use link address */
783
784 #if defined(ELFSIZE) && (ELFSIZE == 64)
785 #define ELF_NO_ADDR ELF64_NO_ADDR
786 #define ELF_LINK_ADDR ELF64_LINK_ADDR
787 #elif defined(ELFSIZE) && (ELFSIZE == 32)
788 #define ELF_NO_ADDR ELF32_NO_ADDR
789 #define ELF_LINK_ADDR ELF32_LINK_ADDR
790 #endif
791
792 #ifndef ELF32_EHDR_FLAGS_OK
793 #define ELF32_EHDR_FLAGS_OK(eh) 1
794 #endif
795
796 #ifndef ELF64_EHDR_FLAGS_OK
797 #define ELF64_EHDR_FLAGS_OK(eh) 1
798 #endif
799
800 #if defined(ELFSIZE) && (ELFSIZE == 64)
801 #define ELF_EHDR_FLAGS_OK(eh) ELF64_EHDR_FLAGS_OK(eh)
802 #else
803 #define ELF_EHDR_FLAGS_OK(eh) ELF32_EHDR_FLAGS_OK(eh)
804 #endif
805
806 #if defined(ELFSIZE)
807 struct elf_args {
808 Elf_Addr arg_entry; /* program entry point */
809 Elf_Addr arg_interp; /* Interpreter load address */
810 Elf_Addr arg_phaddr; /* program header address */
811 Elf_Addr arg_phentsize; /* Size of program header */
812 Elf_Addr arg_phnum; /* Number of program headers */
813 };
814 #endif
815
816 #ifndef _LKM
817 #include "opt_execfmt.h"
818 #endif
819
820 #ifdef EXEC_ELF32
821 int exec_elf32_makecmds(struct proc *, struct exec_package *);
822 int elf32_copyargs(struct proc *, struct exec_package *,
823 struct ps_strings *, char **, void *);
824
825 int coredump_elf32(struct lwp *, struct vnode *, struct ucred *);
826 int coredump_writenote_elf32(struct proc *, struct vnode *,
827 struct ucred *, off_t, Elf32_Nhdr *, const char *, void *);
828
829 int elf32_check_header(Elf32_Ehdr *, int);
830 #endif
831
832 #ifdef EXEC_ELF64
833 int exec_elf64_makecmds(struct proc *, struct exec_package *);
834 int elf64_read_from(struct proc *, struct vnode *, u_long, caddr_t, int);
835 int elf64_copyargs(struct proc *, struct exec_package *,
836 struct ps_strings *, char **, void *);
837
838 int coredump_elf64(struct lwp *, struct vnode *, struct ucred *);
839 int coredump_writenote_elf64(struct proc *, struct vnode *,
840 struct ucred *, off_t, Elf64_Nhdr *, const char *, void *);
841
842 int elf64_check_header(Elf64_Ehdr *, int);
843 #endif
844
845 #endif /* _KERNEL */
846
847 #endif /* !_SYS_EXEC_ELF_H_ */
Cache object: c773110340fcd30f7581b53c635ef0bc
|