1/* $NetBSD: exec_elf.h,v 1.161 2019/06/07 23:35:52 christos 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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef _SYS_EXEC_ELF_H_
33#define _SYS_EXEC_ELF_H_
34
35/*
36 * The current ELF ABI specification is available at:
37 * http://www.sco.com/developers/gabi/
38 *
39 * Current header definitions are in:
40 * http://www.sco.com/developers/gabi/latest/ch4.eheader.html
41 */
42
43#if defined(_KERNEL) || defined(_STANDALONE)
44#include <sys/types.h>
45#else
46#include <inttypes.h>
47#include <stddef.h>
48#endif /* _KERNEL || _STANDALONE */
49
50#if HAVE_NBTOOL_CONFIG_H
51#include <nbinclude/machine/elf_machdep.h>
52#else
53#include <machine/elf_machdep.h>
54#endif
55
56typedef uint8_t Elf_Byte;
57
58typedef uint32_t Elf32_Addr;
59#define ELF32_FSZ_ADDR 4
60typedef uint32_t Elf32_Off;
61typedef int32_t Elf32_SOff;
62#define ELF32_FSZ_OFF 4
63typedef int32_t Elf32_Sword;
64#define ELF32_FSZ_SWORD 4
65typedef uint32_t Elf32_Word;
66#define ELF32_FSZ_WORD 4
67typedef uint16_t Elf32_Half;
68#define ELF32_FSZ_HALF 2
69typedef uint64_t Elf32_Lword;
70#define ELF32_FSZ_LWORD 8
71
72typedef uint64_t Elf64_Addr;
73#define ELF64_FSZ_ADDR 8
74typedef uint64_t Elf64_Off;
75typedef int64_t Elf64_SOff;
76#define ELF64_FSZ_OFF 8
77
78typedef int32_t Elf64_Sword;
79#define ELF64_FSZ_SWORD 4
80typedef uint32_t Elf64_Word;
81#define ELF64_FSZ_WORD 4
82
83typedef int64_t Elf64_Sxword;
84#define ELF64_FSZ_SXWORD 8
85typedef uint64_t Elf64_Xword;
86#define ELF64_FSZ_XWORD 8
87typedef uint64_t Elf64_Lword;
88#define ELF64_FSZ_LWORD 8
89typedef uint16_t Elf64_Half;
90#define ELF64_FSZ_HALF 2
91
92/*
93 * ELF Header
94 */
95#define ELF_NIDENT 16
96
97typedef struct {
98 unsigned char e_ident[ELF_NIDENT]; /* Id bytes */
99 Elf32_Half e_type; /* file type */
100 Elf32_Half e_machine; /* machine type */
101 Elf32_Word e_version; /* version number */
102 Elf32_Addr e_entry; /* entry point */
103 Elf32_Off e_phoff; /* Program hdr offset */
104 Elf32_Off e_shoff; /* Section hdr offset */
105 Elf32_Word e_flags; /* Processor flags */
106 Elf32_Half e_ehsize; /* sizeof ehdr */
107 Elf32_Half e_phentsize; /* Program header entry size */
108 Elf32_Half e_phnum; /* Number of program headers */
109 Elf32_Half e_shentsize; /* Section header entry size */
110 Elf32_Half e_shnum; /* Number of section headers */
111 Elf32_Half e_shstrndx; /* String table index */
112} Elf32_Ehdr;
113
114typedef struct {
115 unsigned char e_ident[ELF_NIDENT]; /* Id bytes */
116 Elf64_Half e_type; /* file type */
117 Elf64_Half e_machine; /* machine type */
118 Elf64_Word e_version; /* version number */
119 Elf64_Addr e_entry; /* entry point */
120 Elf64_Off e_phoff; /* Program hdr offset */
121 Elf64_Off e_shoff; /* Section hdr offset */
122 Elf64_Word e_flags; /* Processor flags */
123 Elf64_Half e_ehsize; /* sizeof ehdr */
124 Elf64_Half e_phentsize; /* Program header entry size */
125 Elf64_Half e_phnum; /* Number of program headers */
126 Elf64_Half e_shentsize; /* Section header entry size */
127 Elf64_Half e_shnum; /* Number of section headers */
128 Elf64_Half e_shstrndx; /* String table index */
129} Elf64_Ehdr;
130
131/* e_ident offsets */
132#define EI_MAG0 0 /* '\177' */
133#define EI_MAG1 1 /* 'E' */
134#define EI_MAG2 2 /* 'L' */
135#define EI_MAG3 3 /* 'F' */
136#define EI_CLASS 4 /* File class */
137#define EI_DATA 5 /* Data encoding */
138#define EI_VERSION 6 /* File version */
139#define EI_OSABI 7 /* Operating system/ABI identification */
140#define EI_ABIVERSION 8 /* ABI version */
141#define EI_PAD 9 /* Start of padding bytes up to EI_NIDENT*/
142#define EI_NIDENT 16 /* First non-ident header byte */
143
144/* e_ident[EI_MAG0,EI_MAG3] */
145#define ELFMAG0 0x7f
146#define ELFMAG1 'E'
147#define ELFMAG2 'L'
148#define ELFMAG3 'F'
149#define ELFMAG "\177ELF"
150#define SELFMAG 4
151
152/* e_ident[EI_CLASS] */
153#define ELFCLASSNONE 0 /* Invalid class */
154#define ELFCLASS32 1 /* 32-bit objects */
155#define ELFCLASS64 2 /* 64-bit objects */
156#define ELFCLASSNUM 3
157
158/* e_ident[EI_DATA] */
159#define ELFDATANONE 0 /* Invalid data encoding */
160#define ELFDATA2LSB 1 /* 2's complement values, LSB first */
161#define ELFDATA2MSB 2 /* 2's complement values, MSB first */
162
163/* e_ident[EI_VERSION] */
164#define EV_NONE 0 /* Invalid version */
165#define EV_CURRENT 1 /* Current version */
166#define EV_NUM 2
167
168/* e_ident[EI_OSABI] */
169#define ELFOSABI_SYSV 0 /* UNIX System V ABI */
170#define ELFOSABI_HPUX 1 /* HP-UX operating system */
171#define ELFOSABI_NETBSD 2 /* NetBSD */
172#define ELFOSABI_LINUX 3 /* GNU/Linux */
173#define ELFOSABI_HURD 4 /* GNU/Hurd */
174#define ELFOSABI_86OPEN 5 /* 86Open */
175#define ELFOSABI_SOLARIS 6 /* Solaris */
176#define ELFOSABI_MONTEREY 7 /* Monterey */
177#define ELFOSABI_IRIX 8 /* IRIX */
178#define ELFOSABI_FREEBSD 9 /* FreeBSD */
179#define ELFOSABI_TRU64 10 /* TRU64 UNIX */
180#define ELFOSABI_MODESTO 11 /* Novell Modesto */
181#define ELFOSABI_OPENBSD 12 /* OpenBSD */
182#define ELFOSABI_OPENVMS 13 /* OpenVMS */
183#define ELFOSABI_NSK 14 /* HP Non-Stop Kernel */
184#define ELFOSABI_AROS 15 /* Amiga Research OS */
185/* Unofficial OSABIs follow */
186#define ELFOSABI_ARM 97 /* ARM */
187#define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */
188
189#define ELFOSABI_NONE ELFOSABI_SYSV
190#define ELFOSABI_AIX ELFOSABI_MONTEREY
191
192/* e_type */
193#define ET_NONE 0 /* No file type */
194#define ET_REL 1 /* Relocatable file */
195#define ET_EXEC 2 /* Executable file */
196#define ET_DYN 3 /* Shared object file */
197#define ET_CORE 4 /* Core file */
198#define ET_NUM 5
199
200#define ET_LOOS 0xfe00 /* Operating system specific range */
201#define ET_HIOS 0xfeff
202#define ET_LOPROC 0xff00 /* Processor-specific range */
203#define ET_HIPROC 0xffff
204
205/* e_machine */
206#define EM_NONE 0 /* No machine */
207#define EM_M32 1 /* AT&T WE 32100 */
208#define EM_SPARC 2 /* SPARC */
209#define EM_386 3 /* Intel 80386 */
210#define EM_68K 4 /* Motorola 68000 */
211#define EM_88K 5 /* Motorola 88000 */
212#define EM_486 6 /* Intel 80486 [old] */
213#define EM_IAMCU 6 /* Intel MCU. */
214#define EM_860 7 /* Intel 80860 */
215#define EM_MIPS 8 /* MIPS I Architecture */
216#define EM_S370 9 /* Amdahl UTS on System/370 */
217#define EM_MIPS_RS3_LE 10 /* MIPS RS3000 Little-endian */
218 /* 11-14 - Reserved */
219#define EM_RS6000 11 /* IBM RS/6000 XXX reserved */
220#define EM_PARISC 15 /* Hewlett-Packard PA-RISC */
221#define EM_NCUBE 16 /* NCube XXX reserved */
222#define EM_VPP500 17 /* Fujitsu VPP500 */
223#define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */
224#define EM_960 19 /* Intel 80960 */
225#define EM_PPC 20 /* PowerPC */
226#define EM_PPC64 21 /* 64-bit PowerPC */
227 /* 22-35 - Reserved */
228#define EM_S390 22 /* System/390 XXX reserved */
229#define EM_V800 36 /* NEC V800 */
230#define EM_FR20 37 /* Fujitsu FR20 */
231#define EM_RH32 38 /* TRW RH-32 */
232#define EM_RCE 39 /* Motorola RCE */
233#define EM_ARM 40 /* Advanced RISC Machines ARM */
234#define EM_ALPHA 41 /* DIGITAL Alpha */
235#define EM_SH 42 /* Hitachi Super-H */
236#define EM_SPARCV9 43 /* SPARC Version 9 */
237#define EM_TRICORE 44 /* Siemens Tricore */
238#define EM_ARC 45 /* Argonaut RISC Core */
239#define EM_H8_300 46 /* Hitachi H8/300 */
240#define EM_H8_300H 47 /* Hitachi H8/300H */
241#define EM_H8S 48 /* Hitachi H8S */
242#define EM_H8_500 49 /* Hitachi H8/500 */
243#define EM_IA_64 50 /* Intel Merced Processor */
244#define EM_MIPS_X 51 /* Stanford MIPS-X */
245#define EM_COLDFIRE 52 /* Motorola Coldfire */
246#define EM_68HC12 53 /* Motorola MC68HC12 */
247#define EM_MMA 54 /* Fujitsu MMA Multimedia Accelerator */
248#define EM_PCP 55 /* Siemens PCP */
249#define EM_NCPU 56 /* Sony nCPU embedded RISC processor */
250#define EM_NDR1 57 /* Denso NDR1 microprocessor */
251#define EM_STARCORE 58 /* Motorola Star*Core processor */
252#define EM_ME16 59 /* Toyota ME16 processor */
253#define EM_ST100 60 /* STMicroelectronics ST100 processor */
254#define EM_TINYJ 61 /* Advanced Logic Corp. TinyJ embedded family processor */
255#define EM_X86_64 62 /* AMD x86-64 architecture */
256#define EM_PDSP 63 /* Sony DSP Processor */
257#define EM_PDP10 64 /* Digital Equipment Corp. PDP-10 */
258#define EM_PDP11 65 /* Digital Equipment Corp. PDP-11 */
259#define EM_FX66 66 /* Siemens FX66 microcontroller */
260#define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16 bit microcontroller */
261#define EM_ST7 68 /* STMicroelectronics ST7 8-bit microcontroller */
262#define EM_68HC16 69 /* Motorola MC68HC16 Microcontroller */
263#define EM_68HC11 70 /* Motorola MC68HC11 Microcontroller */
264#define EM_68HC08 71 /* Motorola MC68HC08 Microcontroller */
265#define EM_68HC05 72 /* Motorola MC68HC05 Microcontroller */
266#define EM_SVX 73 /* Silicon Graphics SVx */
267#define EM_ST19 74 /* STMicroelectronics ST19 8-bit CPU */
268#define EM_VAX 75 /* Digital VAX */
269#define EM_CRIS 76 /* Axis Communications 32-bit embedded processor */
270#define EM_JAVELIN 77 /* Infineon Technologies 32-bit embedded CPU */
271#define EM_FIREPATH 78 /* Element 14 64-bit DSP processor */
272#define EM_ZSP 79 /* LSI Logic's 16-bit DSP processor */
273#define EM_MMIX 80 /* Donald Knuth's educational 64-bit processor */
274#define EM_HUANY 81 /* Harvard's machine-independent format */
275#define EM_PRISM 82 /* SiTera Prism */
276#define EM_AVR 83 /* Atmel AVR 8-bit microcontroller */
277#define EM_FR30 84 /* Fujitsu FR30 */
278#define EM_D10V 85 /* Mitsubishi D10V */
279#define EM_D30V 86 /* Mitsubishi D30V */
280#define EM_V850 87 /* NEC v850 */
281#define EM_M32R 88 /* Mitsubishi M32R */
282#define EM_MN10300 89 /* Matsushita MN10300 */
283#define EM_MN10200 90 /* Matsushita MN10200 */
284#define EM_PJ 91 /* picoJava */
285#define EM_OR1K 92 /* OpenRISC 32-bit embedded processor */
286#define EM_OPENRISC EM_OR1K
287#define EM_ARC_A5 93 /* ARC Cores Tangent-A5 */
288#define EM_XTENSA 94 /* Tensilica Xtensa Architecture */
289#define EM_VIDEOCORE 95 /* Alphamosaic VideoCore processor */
290#define EM_TMM_GPP 96 /* Thompson Multimedia General Purpose Processor */
291#define EM_NS32K 97 /* National Semiconductor 32000 series */
292#define EM_TPC 98 /* Tenor Network TPC processor */
293#define EM_SNP1K 99 /* Trebia SNP 1000 processor */
294#define EM_ST200 100 /* STMicroelectronics ST200 microcontroller */
295#define EM_IP2K 101 /* Ubicom IP2xxx microcontroller family */
296#define EM_MAX 102 /* MAX processor */
297#define EM_CR 103 /* National Semiconductor CompactRISC micorprocessor */
298#define EM_F2MC16 104 /* Fujitsu F2MC16 */
299#define EM_MSP430 105 /* Texas Instruments MSP430 */
300#define EM_BLACKFIN 106 /* Analog Devices Blackfin DSP */
301#define EM_SE_C33 107 /* Seiko Epson S1C33 family */
302#define EM_SEP 108 /* Sharp embedded microprocessor */
303#define EM_ARCA 109 /* Arca RISC microprocessor */
304#define EM_UNICORE 110 /* UNICORE from PKU-Unity Ltd. and MPRC Peking University */
305#define EM_ALTERA_NIOS2 113 /* Altera Nios II soft-core processor */
306#define EM_AARCH64 183 /* AArch64 64-bit ARM microprocessor */
307#define EM_AVR32 185 /* Atmel Corporation 32-bit microprocessor family*/
308#define EM_TILE64 187 /* Tilera TILE64 multicore architecture family */
309#define EM_TILEPRO 188 /* Tilera TILEPro multicore architecture family */
310#define EM_MICROBLAZE 189 /* Xilinx MicroBlaze 32-bit RISC soft processor core */
311#define EM_TILEGX 192 /* Tilera TILE-GX multicore architecture family */
312#define EM_Z80 220 /* Zilog Z80 */
313#define EM_RISCV 243 /* RISC-V */
314
315/* Unofficial machine types follow */
316#define EM_ALPHA_EXP 36902 /* used by NetBSD/alpha; obsolete */
317#define EM_NUM 36903
318
319/*
320 * Program Header
321 */
322typedef struct {
323 Elf32_Word p_type; /* entry type */
324 Elf32_Off p_offset; /* offset */
325 Elf32_Addr p_vaddr; /* virtual address */
326 Elf32_Addr p_paddr; /* physical address */
327 Elf32_Word p_filesz; /* file size */
328 Elf32_Word p_memsz; /* memory size */
329 Elf32_Word p_flags; /* flags */
330 Elf32_Word p_align; /* memory & file alignment */
331} Elf32_Phdr;
332
333typedef struct {
334 Elf64_Word p_type; /* entry type */
335 Elf64_Word p_flags; /* flags */
336 Elf64_Off p_offset; /* offset */
337 Elf64_Addr p_vaddr; /* virtual address */
338 Elf64_Addr p_paddr; /* physical address */
339 Elf64_Xword p_filesz; /* file size */
340 Elf64_Xword p_memsz; /* memory size */
341 Elf64_Xword p_align; /* memory & file alignment */
342} Elf64_Phdr;
343
344/* p_type */
345#define PT_NULL 0 /* Program header table entry unused */
346#define PT_LOAD 1 /* Loadable program segment */
347#define PT_DYNAMIC 2 /* Dynamic linking information */
348#define PT_INTERP 3 /* Program interpreter */
349#define PT_NOTE 4 /* Auxiliary information */
350#define PT_SHLIB 5 /* Reserved, unspecified semantics */
351#define PT_PHDR 6 /* Entry for header table itself */
352#define PT_TLS 7 /* TLS initialisation image */
353#define PT_NUM 8
354
355#define PT_LOOS 0x60000000 /* OS-specific range */
356
357/* GNU-specific */
358#define PT_GNU_EH_FRAME 0x6474e550 /* EH frame segment */
359#define PT_GNU_STACK 0x6474e551 /* Indicate executable stack */
360#define PT_GNU_RELRO 0x6474e552 /* Make read-only after relocation */
361
362#define PT_HIOS 0x6fffffff
363#define PT_LOPROC 0x70000000 /* Processor-specific range */
364#define PT_HIPROC 0x7fffffff
365
366#define PT_MIPS_REGINFO 0x70000000
367#define PT_MIPS_ABIFLAGS 0x70000003
368
369/* p_flags */
370#define PF_R 0x4 /* Segment is readable */
371#define PF_W 0x2 /* Segment is writable */
372#define PF_X 0x1 /* Segment is executable */
373
374#define PF_MASKOS 0x0ff00000 /* Operating system specific values */
375#define PF_MASKPROC 0xf0000000 /* Processor-specific values */
376
377/* Extended program header index. */
378#define PN_XNUM 0xffff
379
380/*
381 * Section Headers
382 */
383typedef struct {
384 Elf32_Word sh_name; /* section name (.shstrtab index) */
385 Elf32_Word sh_type; /* section type */
386 Elf32_Word sh_flags; /* section flags */
387 Elf32_Addr sh_addr; /* virtual address */
388 Elf32_Off sh_offset; /* file offset */
389 Elf32_Word sh_size; /* section size */
390 Elf32_Word sh_link; /* link to another */
391 Elf32_Word sh_info; /* misc info */
392 Elf32_Word sh_addralign; /* memory alignment */
393 Elf32_Word sh_entsize; /* table entry size */
394} Elf32_Shdr;
395
396typedef struct {
397 Elf64_Word sh_name; /* section name (.shstrtab index) */
398 Elf64_Word sh_type; /* section type */
399 Elf64_Xword sh_flags; /* section flags */
400 Elf64_Addr sh_addr; /* virtual address */
401 Elf64_Off sh_offset; /* file offset */
402 Elf64_Xword sh_size; /* section size */
403 Elf64_Word sh_link; /* link to another */
404 Elf64_Word sh_info; /* misc info */
405 Elf64_Xword sh_addralign; /* memory alignment */
406 Elf64_Xword sh_entsize; /* table entry size */
407} Elf64_Shdr;
408
409/* sh_type */
410#define SHT_NULL 0 /* Section header table entry unused */
411#define SHT_PROGBITS 1 /* Program information */
412#define SHT_SYMTAB 2 /* Symbol table */
413#define SHT_STRTAB 3 /* String table */
414#define SHT_RELA 4 /* Relocation information w/ addend */
415#define SHT_HASH 5 /* Symbol hash table */
416#define SHT_DYNAMIC 6 /* Dynamic linking information */
417#define SHT_NOTE 7 /* Auxiliary information */
418#define SHT_NOBITS 8 /* No space allocated in file image */
419#define SHT_REL 9 /* Relocation information w/o addend */
420#define SHT_SHLIB 10 /* Reserved, unspecified semantics */
421#define SHT_DYNSYM 11 /* Symbol table for dynamic linker */
422#define SHT_INIT_ARRAY 14 /* Initialization function pointers */
423#define SHT_FINI_ARRAY 15 /* Termination function pointers */
424#define SHT_PREINIT_ARRAY 16 /* Pre-initialization function ptrs */
425#define SHT_GROUP 17 /* Section group */
426#define SHT_SYMTAB_SHNDX 18 /* Section indexes (see SHN_XINDEX) */
427#define SHT_NUM 19
428
429#define SHT_LOOS 0x60000000 /* Operating system specific range */
430#define SHT_GNU_INCREMENTAL_INPUTS 0x6fff4700 /* GNU incremental build data */
431#define SHT_LOSUNW 0x6ffffff4
432#define SHT_SUNW_dof 0x6ffffff4
433#define SHT_GNU_ATTRIBUTES 0x6ffffff5 /* GNU object attributes */
434#define SHT_SUNW_cap 0x6ffffff5
435#define SHT_SUNW_SIGNATURE 0x6ffffff6
436#define SHT_GNU_HASH 0x6ffffff6 /* GNU style symbol hash table */
437#define SHT_GNU_LIBLIST 0x6ffffff7 /* GNU list of prelink dependencies */
438#define SHT_SUNW_move 0x6ffffffa
439#define SHT_SUNW_COMDAT 0x6ffffffb
440#define SHT_SUNW_syminfo 0x6ffffffc
441#define SHT_SUNW_verdef 0x6ffffffd /* Versions defined by file */
442#define SHT_GNU_verdef SHT_SUNW_verdef
443#define SHT_SUNW_verneed 0x6ffffffe /* Versions needed by file */
444#define SHT_GNU_verneed SHT_SUNW_verneed
445#define SHT_SUNW_versym 0x6fffffff /* Symbol versions */
446#define SHT_GNU_versym SHT_SUNW_versym
447#define SHT_HISUNW 0x6fffffff
448#define SHT_HIOS 0x6fffffff
449#define SHT_LOPROC 0x70000000 /* Processor-specific range */
450#define SHT_AMD64_UNWIND 0x70000001 /* unwind information */
451#define SHT_ARM_EXIDX 0x70000001 /* exception index table */
452#define SHT_ARM_PREEMPTMAP 0x70000002 /* BPABI DLL dynamic linking
453 * pre-emption map */
454#define SHT_ARM_ATTRIBUTES 0x70000003 /* Object file compatibility
455 * attributes */
456#define SHT_ARM_DEBUGOVERLAY 0x70000004 /* See DBGOVL for details */
457#define SHT_ARM_OVERLAYSECTION 0x70000005
458#define SHT_MIPS_REGINFO 0x70000006
459#define SHT_MIPS_OPTIONS 0x7000000d
460#define SHT_MIPS_DWARF 0x7000001e /* MIPS gcc uses MIPS_DWARF */
461#define SHT_HIPROC 0x7fffffff
462#define SHT_LOUSER 0x80000000 /* Application-specific range */
463#define SHT_HIUSER 0xffffffff
464
465/* sh_flags */
466#define SHF_WRITE 0x00000001 /* Contains writable data */
467#define SHF_ALLOC 0x00000002 /* Occupies memory */
468#define SHF_EXECINSTR 0x00000004 /* Contains executable insns */
469#define SHF_MERGE 0x00000010 /* Might be merged */
470#define SHF_STRINGS 0x00000020 /* Contains nul terminated strings */
471#define SHF_INFO_LINK 0x00000040 /* "sh_info" contains SHT index */
472#define SHF_LINK_ORDER 0x00000080 /* Preserve order after combining */
473#define SHF_OS_NONCONFORMING 0x00000100 /* OS specific handling required */
474#define SHF_GROUP 0x00000200 /* Is member of a group */
475#define SHF_TLS 0x00000400 /* Holds thread-local data */
476#define SHF_MASKOS 0x0ff00000 /* Operating system specific values */
477#define SHF_MASKPROC 0xf0000000 /* Processor-specific values */
478#define SHF_ORDERED 0x40000000 /* Ordering requirement (Solaris) */
479#define SHF_EXCLUDE 0x80000000 /* Excluded unless unles ref/alloc
480 (Solaris).*/
481/*
482 * Symbol Table
483 */
484typedef struct {
485 Elf32_Word st_name; /* Symbol name (.strtab index) */
486 Elf32_Word st_value; /* value of symbol */
487 Elf32_Word st_size; /* size of symbol */
488 Elf_Byte st_info; /* type / binding attrs */
489 Elf_Byte st_other; /* unused */
490 Elf32_Half st_shndx; /* section index of symbol */
491} Elf32_Sym;
492
493typedef struct {
494 Elf64_Word st_name; /* Symbol name (.strtab index) */
495 Elf_Byte st_info; /* type / binding attrs */
496 Elf_Byte st_other; /* unused */
497 Elf64_Half st_shndx; /* section index of symbol */
498 Elf64_Addr st_value; /* value of symbol */
499 Elf64_Xword st_size; /* size of symbol */
500} Elf64_Sym;
501
502/* Symbol Table index of the undefined symbol */
503#define ELF_SYM_UNDEFINED 0
504
505#define STN_UNDEF 0 /* undefined index */
506
507/* st_info: Symbol Bindings */
508#define STB_LOCAL 0 /* local symbol */
509#define STB_GLOBAL 1 /* global symbol */
510#define STB_WEAK 2 /* weakly defined global symbol */
511#define STB_NUM 3
512
513#define STB_LOOS 10 /* Operating system specific range */
514#define STB_HIOS 12
515#define STB_LOPROC 13 /* Processor-specific range */
516#define STB_HIPROC 15
517
518/* st_info: Symbol Types */
519#define STT_NOTYPE 0 /* Type not specified */
520#define STT_OBJECT 1 /* Associated with a data object */
521#define STT_FUNC 2 /* Associated with a function */
522#define STT_SECTION 3 /* Associated with a section */
523#define STT_FILE 4 /* Associated with a file name */
524#define STT_COMMON 5 /* Uninitialised common block */
525#define STT_TLS 6 /* Thread local data object */
526#define STT_NUM 7
527
528#define STT_LOOS 10 /* Operating system specific range */
529#define STT_GNU_IFUNC 10 /* GNU extension: indirect function */
530#define STT_HIOS 12
531#define STT_LOPROC 13 /* Processor-specific range */
532#define STT_HIPROC 15
533
534/* st_other: Visibility Types */
535#define STV_DEFAULT 0 /* use binding type */
536#define STV_INTERNAL 1 /* not referenced from outside */
537#define STV_HIDDEN 2 /* not visible, may be used via ptr */
538#define STV_PROTECTED 3 /* visible, not preemptible */
539#define STV_EXPORTED 4
540#define STV_SINGLETON 5
541#define STV_ELIMINATE 6
542
543/* st_info/st_other utility macros */
544#define ELF_ST_BIND(info) ((uint32_t)(info) >> 4)
545#define ELF_ST_TYPE(info) ((uint32_t)(info) & 0xf)
546#define ELF_ST_INFO(bind,type) ((Elf_Byte)(((bind) << 4) | \
547 ((type) & 0xf)))
548#define ELF_ST_VISIBILITY(other) ((uint32_t)(other) & 3)
549
550/*
551 * Special section indexes
552 */
553#define SHN_UNDEF 0 /* Undefined section */
554
555#define SHN_LORESERVE 0xff00 /* Reserved range */
556#define SHN_ABS 0xfff1 /* Absolute symbols */
557#define SHN_COMMON 0xfff2 /* Common symbols */
558#define SHN_XINDEX 0xffff /* Escape -- index stored elsewhere */
559#define SHN_HIRESERVE 0xffff
560
561#define SHN_LOPROC 0xff00 /* Processor-specific range */
562#define SHN_HIPROC 0xff1f
563#define SHN_LOOS 0xff20 /* Operating system specific range */
564#define SHN_HIOS 0xff3f
565
566#define SHN_MIPS_ACOMMON 0xff00
567#define SHN_MIPS_TEXT 0xff01
568#define SHN_MIPS_DATA 0xff02
569#define SHN_MIPS_SCOMMON 0xff03
570
571/*
572 * Relocation Entries
573 */
574typedef struct {
575 Elf32_Word r_offset; /* where to do it */
576 Elf32_Word r_info; /* index & type of relocation */
577} Elf32_Rel;
578
579typedef struct {
580 Elf32_Word r_offset; /* where to do it */
581 Elf32_Word r_info; /* index & type of relocation */
582 Elf32_Sword r_addend; /* adjustment value */
583} Elf32_Rela;
584
585/* r_info utility macros */
586#define ELF32_R_SYM(info) ((info) >> 8)
587#define ELF32_R_TYPE(info) ((info) & 0xff)
588#define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type))
589
590typedef struct {
591 Elf64_Addr r_offset; /* where to do it */
592 Elf64_Xword r_info; /* index & type of relocation */
593} Elf64_Rel;
594
595typedef struct {
596 Elf64_Addr r_offset; /* where to do it */
597 Elf64_Xword r_info; /* index & type of relocation */
598 Elf64_Sxword r_addend; /* adjustment value */
599} Elf64_Rela;
600
601/* r_info utility macros */
602#define ELF64_R_SYM(info) ((info) >> 32)
603#define ELF64_R_TYPE(info) ((info) & 0xffffffff)
604#define ELF64_R_INFO(sym,type) (((sym) << 32) + (type))
605
606/*
607 * Move entries
608 */
609typedef struct {
610 Elf32_Lword m_value; /* symbol value */
611 Elf32_Word m_info; /* size + index */
612 Elf32_Word m_poffset; /* symbol offset */
613 Elf32_Half m_repeat; /* repeat count */
614 Elf32_Half m_stride; /* stride info */
615} Elf32_Move;
616
617#define ELF32_M_SYM(info) ((info) >> 8)
618#define ELF32_M_SIZE(info) ((info) & 0xff)
619#define ELF32_M_INFO(sym, size) (((sym) << 8) + (unsigned char)(size))
620
621typedef struct {
622 Elf64_Lword m_value; /* symbol value */
623 Elf64_Xword m_info; /* size + index */
624 Elf64_Xword m_poffset; /* symbol offset */
625 Elf64_Word m_repeat; /* repeat count */
626 Elf64_Word m_stride; /* stride info */
627} Elf64_Move;
628
629#define ELF64_M_SYM(info) ((info) >> 8)
630#define ELF64_M_SIZE(info) ((info) & 0xff)
631#define ELF64_M_INFO(sym, size) (((sym) << 8) + (unsigned char)(size))
632
633/*
634 * Hardware/software capabilities entry
635 */
636typedef struct {
637 Elf32_Word c_tag; /* entry tag value */
638 union {
639 Elf32_Addr c_ptr;
640 Elf32_Word c_val;
641 } c_un;
642} Elf32_Cap;
643
644typedef struct {
645 Elf64_Xword c_tag; /* entry tag value */
646 union {
647 Elf64_Addr c_ptr;
648 Elf64_Xword c_val;
649 } c_un;
650} Elf64_Cap;
651
652/*
653 * Dynamic Section structure array
654 */
655typedef struct {
656 Elf32_Word d_tag; /* entry tag value */
657 union {
658 Elf32_Addr d_ptr;
659 Elf32_Word d_val;
660 } d_un;
661} Elf32_Dyn;
662
663typedef struct {
664 Elf64_Xword d_tag; /* entry tag value */
665 union {
666 Elf64_Addr d_ptr;
667 Elf64_Xword d_val;
668 } d_un;
669} Elf64_Dyn;
670
671/* d_tag */
672#define DT_NULL 0 /* Marks end of dynamic array */
673#define DT_NEEDED 1 /* Name of needed library (DT_STRTAB offset) */
674#define DT_PLTRELSZ 2 /* Size, in bytes, of relocations in PLT */
675#define DT_PLTGOT 3 /* Address of PLT and/or GOT */
676#define DT_HASH 4 /* Address of symbol hash table */
677#define DT_STRTAB 5 /* Address of string table */
678#define DT_SYMTAB 6 /* Address of symbol table */
679#define DT_RELA 7 /* Address of Rela relocation table */
680#define DT_RELASZ 8 /* Size, in bytes, of DT_RELA table */
681#define DT_RELAENT 9 /* Size, in bytes, of one DT_RELA entry */
682#define DT_STRSZ 10 /* Size, in bytes, of DT_STRTAB table */
683#define DT_SYMENT 11 /* Size, in bytes, of one DT_SYMTAB entry */
684#define DT_INIT 12 /* Address of initialization function */
685#define DT_FINI 13 /* Address of termination function */
686#define DT_SONAME 14 /* Shared object name (DT_STRTAB offset) */
687#define DT_RPATH 15 /* Library search path (DT_STRTAB offset) */
688#define DT_SYMBOLIC 16 /* Start symbol search within local object */
689#define DT_REL 17 /* Address of Rel relocation table */
690#define DT_RELSZ 18 /* Size, in bytes, of DT_REL table */
691#define DT_RELENT 19 /* Size, in bytes, of one DT_REL entry */
692#define DT_PLTREL 20 /* Type of PLT relocation entries */
693#define DT_DEBUG 21 /* Used for debugging; unspecified */
694#define DT_TEXTREL 22 /* Relocations might modify non-writable seg */
695#define DT_JMPREL 23 /* Address of relocations associated with PLT */
696#define DT_BIND_NOW 24 /* Process all relocations at load-time */
697#define DT_INIT_ARRAY 25 /* Address of initialization function array */
698#define DT_FINI_ARRAY 26 /* Size, in bytes, of DT_INIT_ARRAY array */
699#define DT_INIT_ARRAYSZ 27 /* Address of termination function array */
700#define DT_FINI_ARRAYSZ 28 /* Size, in bytes, of DT_FINI_ARRAY array*/
701#define DT_RUNPATH 29 /* overrides DT_RPATH */
702#define DT_FLAGS 30 /* Encodes ORIGIN, SYMBOLIC, TEXTREL, BIND_NOW, STATIC_TLS */
703#define DT_ENCODING 31 /* ??? */
704#define DT_PREINIT_ARRAY 32 /* Address of pre-init function array */
705#define DT_PREINIT_ARRAYSZ 33 /* Size, in bytes, of DT_PREINIT_ARRAY array */
706#define DT_NUM 34
707
708#define DT_LOOS 0x60000000 /* Operating system specific range */
709#define DT_VERSYM 0x6ffffff0 /* Symbol versions */
710#define DT_FLAGS_1 0x6ffffffb /* ELF dynamic flags */
711#define DT_VERDEF 0x6ffffffc /* Versions defined by file */
712#define DT_VERDEFNUM 0x6ffffffd /* Number of versions defined by file */
713#define DT_VERNEED 0x6ffffffe /* Versions needed by file */
714#define DT_VERNEEDNUM 0x6fffffff /* Number of versions needed by file */
715#define DT_HIOS 0x6fffffff
716#define DT_LOPROC 0x70000000 /* Processor-specific range */
717#define DT_HIPROC 0x7fffffff
718
719/* Flag values for DT_FLAGS */
720#define DF_ORIGIN 0x00000001 /* uses $ORIGIN */
721#define DF_SYMBOLIC 0x00000002 /* */
722#define DF_TEXTREL 0x00000004 /* */
723#define DF_BIND_NOW 0x00000008 /* */
724#define DF_STATIC_TLS 0x00000010 /* */
725
726/* Flag values for DT_FLAGS_1 */
727#define DF_1_NOW 0x00000001 /* Same as DF_BIND_NOW */
728#define DF_1_GLOBAL 0x00000002 /* Unused */
729#define DF_1_GROUP 0x00000004 /* Is member of group */
730#define DF_1_NODELETE 0x00000008 /* Cannot be deleted from process */
731#define DF_1_LOADFLTR 0x00000010 /* Immediate loading of filters */
732#define DF_1_INITFIRST 0x00000020 /* init/fini takes priority */
733#define DF_1_NOOPEN 0x00000040 /* Do not allow loading on dlopen() */
734#define DF_1_ORIGIN 0x00000080 /* Require $ORIGIN processing */
735#define DF_1_DIRECT 0x00000100 /* Enable direct bindings */
736#define DF_1_INTERPOSE 0x00000400 /* Is an interposer */
737#define DF_1_NODEFLIB 0x00000800 /* Ignore default library search path */
738#define DF_1_NODUMP 0x00001000 /* Cannot be dumped with dldump(3C) */
739#define DF_1_CONFALT 0x00002000 /* Configuration alternative */
740#define DF_1_ENDFILTEE 0x00004000 /* Filtee ends filter's search */
741#define DF_1_DISPRELDNE 0x00008000 /* Did displacement relocation */
742#define DF_1_DISPRELPND 0x00010000 /* Pending displacement relocation */
743#define DF_1_NODIRECT 0x00020000 /* Has non-direct bindings */
744#define DF_1_IGNMULDEF 0x00040000 /* Used internally */
745#define DF_1_NOKSYMS 0x00080000 /* Used internally */
746#define DF_1_NOHDR 0x00100000 /* Used internally */
747#define DF_1_EDITED 0x00200000 /* Has been modified since build */
748#define DF_1_NORELOC 0x00400000 /* Used internally */
749#define DF_1_SYMINTPOSE 0x00800000 /* Has individual symbol interposers */
750#define DF_1_GLOBAUDIT 0x01000000 /* Require global auditing */
751#define DF_1_SINGLETON 0x02000000 /* Has singleton symbols */
752#define DF_1_STUB 0x04000000 /* Stub */
753#define DF_1_PIE 0x08000000 /* Position Independent Executable */
754
755/*
756 * Auxiliary Vectors
757 */
758typedef struct {
759 Elf32_Word a_type; /* 32-bit id */
760 Elf32_Word a_v; /* 32-bit id */
761} Aux32Info;
762
763typedef struct {
764 Elf64_Word a_type; /* 32-bit id */
765 Elf64_Xword a_v; /* 64-bit id */
766} Aux64Info;
767
768/* a_type */
769#define AT_NULL 0 /* Marks end of array */
770#define AT_IGNORE 1 /* No meaning, a_un is undefined */
771#define AT_EXECFD 2 /* Open file descriptor of object file */
772#define AT_PHDR 3 /* &phdr[0] */
773#define AT_PHENT 4 /* sizeof(phdr[0]) */
774#define AT_PHNUM 5 /* # phdr entries */
775#define AT_PAGESZ 6 /* PAGESIZE */
776#define AT_BASE 7 /* Interpreter base addr */
777#define AT_FLAGS 8 /* Processor flags */
778#define AT_ENTRY 9 /* Entry address of executable */
779#define AT_DCACHEBSIZE 10 /* Data cache block size */
780#define AT_ICACHEBSIZE 11 /* Instruction cache block size */
781#define AT_UCACHEBSIZE 12 /* Unified cache block size */
782#define AT_STACKBASE 13 /* Base address of the main thread */
783
784 /* Vendor specific */
785#define AT_MIPS_NOTELF 10 /* XXX a_val != 0 -> MIPS XCOFF executable */
786
787#define AT_EUID 2000 /* euid (solaris compatible numbers) */
788#define AT_RUID 2001 /* ruid (solaris compatible numbers) */
789#define AT_EGID 2002 /* egid (solaris compatible numbers) */
790#define AT_RGID 2003 /* rgid (solaris compatible numbers) */
791
792 /* Solaris kernel specific */
793#define AT_SUN_LDELF 2004 /* dynamic linker's ELF header */
794#define AT_SUN_LDSHDR 2005 /* dynamic linker's section header */
795#define AT_SUN_LDNAME 2006 /* dynamic linker's name */
796#define AT_SUN_LPGSIZE 2007 /* large pagesize */
797
798 /* Other information */
799#define AT_SUN_PLATFORM 2008 /* sysinfo(SI_PLATFORM) */
800#define AT_SUN_HWCAP 2009 /* process hardware capabilities */
801#define AT_SUN_IFLUSH 2010 /* do we need to flush the instruction cache? */
802#define AT_SUN_CPU 2011 /* CPU name */
803 /* ibcs2 emulation band aid */
804#define AT_SUN_EMUL_ENTRY 2012 /* coff entry point */
805#define AT_SUN_EMUL_EXECFD 2013 /* coff file descriptor */
806 /* Executable's fully resolved name */
807#define AT_SUN_EXECNAME 2014
808
809/*
810 * The header for GNU-style hash sections.
811 */
812typedef struct {
813 uint32_t gh_nbuckets; /* Number of hash buckets. */
814 uint32_t gh_symndx; /* First visible symbol in .dynsym. */
815 uint32_t gh_maskwords; /* #maskwords used in bloom filter. */
816 uint32_t gh_shift2; /* Bloom filter shift count. */
817} Elf_GNU_Hash_Header;
818
819/*
820 * Note Headers
821 */
822typedef struct {
823 Elf32_Word n_namesz;
824 Elf32_Word n_descsz;
825 Elf32_Word n_type;
826} Elf32_Nhdr;
827
828typedef struct {
829 Elf64_Word n_namesz;
830 Elf64_Word n_descsz;
831 Elf64_Word n_type;
832} Elf64_Nhdr;
833
834#define ELF_NOTE_GNU_NAMESZ 4
835#define ELF_NOTE_GNU_NAME "GNU\0"
836
837/*
838 * GNU-specific note type: ABI tag
839 * name: GNU\0
840 * namesz: 4
841 * desc:
842 * word[0]: OS tag
843 * word[1]: major version
844 * word[2]: minor version
845 * word[3]: teeny version
846 * descsz: 16
847 */
848/* GNU-specific note name and description sizes */
849#define ELF_NOTE_TYPE_ABI_TAG 1
850#define ELF_NOTE_ABI_NAME ELF_NOTE_GNU_NAME
851#define ELF_NOTE_ABI_NAMESZ ELF_NOTE_GNU_NAMESZ
852#define ELF_NOTE_ABI_DESCSZ 16
853/* GNU-specific OS/version value stuff */
854#define ELF_NOTE_ABI_OS_LINUX 0
855#define ELF_NOTE_ABI_OS_HURD 1
856#define ELF_NOTE_ABI_OS_SOLARIS 2
857#define ELF_NOTE_ABI_OS_KFREEBSD 3
858#define ELF_NOTE_ABI_OS_KNETBSD 4
859
860/* Old gcc style, under the ABI tag */
861#define ELF_NOTE_OGCC_NAMESZ 8
862#define ELF_NOTE_OGCC_NAME "01.01\0\0\0\0"
863#define ELF_NOTE_OGCC_DESCSZ 0
864
865/*
866 * GNU-specific note type: Hardware capabilities
867 * name: GNU\0
868 * namesz: 4
869 * desc:
870 * word[0]: Number of entries
871 * word[1]: Bitmask of enabled entries
872 * Followed by a byte id, and a NUL terminated string per entry
873 * descsz: variable
874 */
875#define ELF_NOTE_TYPE_GNU_HWCAP 2
876
877/*
878 * GNU-specific note type: Build ID generated by ld
879 * name: GNU\0
880 * desc:
881 * word[0..4] SHA1 [default]
882 * or
883 * word[0..3] md5 or uuid
884 * descsz: 16 or 20
885 */
886#define ELF_NOTE_TYPE_GNU_BUILD_ID 3
887
888/* SuSE-specific note type: ABI
889 * name: SuSE\0
890 * namesz: 5
891 * desc:
892 * half[0] = MMmm
893 *
894 * M = product major version
895 * m = product minor version
896 * descsz: 2
897 */
898#define ELF_NOTE_TYPE_SUSE_TAG 1
899/* SuSE-specific note name and description sizes */
900#define ELF_NOTE_SUSE_NAMESZ 5
901#define ELF_NOTE_SUSE_DESCSZ 2
902/* SuSE-specific note name */
903#define ELF_NOTE_SUSE_NAME "SuSE\0"
904
905/* SuSE-specific note type: version
906 * name: SuSE\0\0\0\0
907 * namesz: 8
908 * desc:
909 * word[0] = VVTTMMmm
910 *
911 * V = version of following data
912 * T = product type: [box, sles, nld, whatever]
913 * M = product major version
914 * m = product minor version
915 * descsz: 8
916 */
917#define ELF_NOTE_TYPE_SUSE_VERSION_TAG 0x45537553 /* SuSE in LE */
918/* SuSE-specific note name and description sizes */
919#define ELF_NOTE_SUSE_VERSION_NAMESZ 8
920#define ELF_NOTE_SUSE_VERSION_DESCSZ 8
921/* SuSE-specific note name */
922#define ELF_NOTE_SUSE_VERSION_NAME "SuSE\0\0\0\0"
923
924/* Go-specific note type: buildid
925 * name: Go\0\0
926 * namesz: 4
927 * desc:
928 * words[10]
929 * descsz: 40
930 */
931#define ELF_NOTE_TYPE_GO_BUILDID_TAG 4
932#define ELF_NOTE_GO_BUILDID_NAMESZ 4
933#define ELF_NOTE_GO_BUILDID_DESCSZ 40
934#define ELF_NOTE_GO_BUILDID_NAME "Go\0\0"
935
936/* NetBSD-specific note type: NetBSD ABI version.
937 * name: NetBSD\0\0
938 * namesz: 8
939 * desc:
940 * word[0]: MMmmrrpp00
941 *
942 * M = major version
943 * m = minor version
944 * r = release ["",A-Z,Z[A-Z] but numeric]
945 * p = patchlevel
946 * descsz: 4
947 */
948#define ELF_NOTE_TYPE_NETBSD_TAG 1
949/* NetBSD-specific note name and description sizes */
950#define ELF_NOTE_NETBSD_NAMESZ 7
951#define ELF_NOTE_NETBSD_DESCSZ 4
952/* NetBSD-specific note name */
953#define ELF_NOTE_NETBSD_NAME "NetBSD\0\0"
954
955/* NetBSD-specific note type: Emulation (obsolete; last used early 2000)
956 * name: NetBSD\0\0
957 * namesz: 8
958 * desc:
959 * "netbsd\0"
960 *
961 * descsz: 8
962 */
963#define ELF_NOTE_TYPE_NETBSD_EMUL_TAG 2
964#define ELF_NOTE_NETBSD_EMUL_NAMESZ 7
965#define ELF_NOTE_NETBSD_EMUL_DESCSZ 7
966/* NetBSD-specific note name */
967#define ELF_NOTE_NETBSD_EMUL_NAME "NetBSD\0\0"
968
969/*
970 * NetBSD-specific note type: PaX.
971 * There should be 1 NOTE per executable.
972 * name: PaX\0
973 * namesz: 4
974 * desc:
975 * word[0]: capability bitmask
976 * descsz: 4
977 */
978#define ELF_NOTE_TYPE_PAX_TAG 3
979#define ELF_NOTE_PAX_MPROTECT 0x01 /* Force enable Mprotect */
980#define ELF_NOTE_PAX_NOMPROTECT 0x02 /* Force disable Mprotect */
981#define ELF_NOTE_PAX_GUARD 0x04 /* Force enable Segvguard */
982#define ELF_NOTE_PAX_NOGUARD 0x08 /* Force disable Segvguard */
983#define ELF_NOTE_PAX_ASLR 0x10 /* Force enable ASLR */
984#define ELF_NOTE_PAX_NOASLR 0x20 /* Force disable ASLR */
985#define ELF_NOTE_PAX_NAMESZ 4
986#define ELF_NOTE_PAX_NAME "PaX\0"
987#define ELF_NOTE_PAX_DESCSZ 4
988
989/*
990 * NetBSD-specific core file information.
991 *
992 * NetBSD ELF core files use notes to provide information about
993 * the process's state. The note name is "NetBSD-CORE" for
994 * information that is global to the process, and "NetBSD-CORE@nn",
995 * where "nn" is the lwpid of the LWP that the information belongs
996 * to (such as register state).
997 *
998 * We use the following note identifiers:
999 *
1000 * ELF_NOTE_NETBSD_CORE_PROCINFO
1001 * Note is a "netbsd_elfcore_procinfo" structure.
1002 * ELF_NOTE_NETBSD_CORE_AUXV
1003 * Note is an array of AuxInfo structures.
1004 *
1005 * We also use ptrace(2) request numbers (the ones that exist in
1006 * machine-dependent space) to identify register info notes. The
1007 * info in such notes is in the same format that ptrace(2) would
1008 * export that information.
1009 *
1010 * Please try to keep the members of this structure nicely aligned,
1011 * and if you add elements, add them to the end and bump the version.
1012 */
1013
1014#define ELF_NOTE_NETBSD_CORE_NAME "NetBSD-CORE"
1015
1016#define ELF_NOTE_NETBSD_CORE_PROCINFO 1
1017#define ELF_NOTE_NETBSD_CORE_AUXV 2
1018
1019#define NETBSD_ELFCORE_PROCINFO_VERSION 1
1020
1021struct netbsd_elfcore_procinfo {
1022 /* Version 1 fields start here. */
1023 uint32_t cpi_version; /* our version */
1024 uint32_t cpi_cpisize; /* sizeof(this struct) */
1025 uint32_t cpi_signo; /* killing signal */
1026 uint32_t cpi_sigcode; /* signal code */
1027 uint32_t cpi_sigpend[4]; /* pending signals */
1028 uint32_t cpi_sigmask[4]; /* blocked signals */
1029 uint32_t cpi_sigignore[4]; /* ignored signals */
1030 uint32_t cpi_sigcatch[4]; /* caught signals */
1031 int32_t cpi_pid; /* process ID */
1032 int32_t cpi_ppid; /* parent process ID */
1033 int32_t cpi_pgrp; /* process group ID */
1034 int32_t cpi_sid; /* session ID */
1035 uint32_t cpi_ruid; /* real user ID */
1036 uint32_t cpi_euid; /* effective user ID */
1037 uint32_t cpi_svuid; /* saved user ID */
1038 uint32_t cpi_rgid; /* real group ID */
1039 uint32_t cpi_egid; /* effective group ID */
1040 uint32_t cpi_svgid; /* saved group ID */
1041 uint32_t cpi_nlwps; /* number of LWPs */
1042 int8_t cpi_name[32]; /* copy of p->p_comm */
1043 /* Add version 2 fields below here. */
1044 int32_t cpi_siglwp; /* LWP target of killing signal */
1045};
1046
1047/*
1048 * NetBSD-specific note type: MACHINE_ARCH.
1049 * There should be 1 NOTE per executable.
1050 * name: NetBSD\0
1051 * namesz: 7
1052 * desc: string
1053 * descsz: variable
1054 */
1055#define ELF_NOTE_TYPE_MARCH_TAG 5
1056/* NetBSD-specific note name and description sizes */
1057#define ELF_NOTE_MARCH_NAMESZ ELF_NOTE_NETBSD_NAMESZ
1058/* NetBSD-specific note name */
1059#define ELF_NOTE_MARCH_NAME ELF_NOTE_NETBSD_NAME
1060
1061/*
1062 * NetBSD-specific note type: MCMODEL
1063 * There should be 1 NOTE per executable.
1064 * name: NetBSD\0
1065 * namesz: 7
1066 * code model: string
1067 */
1068
1069#define ELF_NOTE_TYPE_MCMODEL_TAG 6
1070/* NetBSD-specific note name and description sizes */
1071#define ELF_NOTE_MCMODEL_NAMESZ ELF_NOTE_NETBSD_NAMESZ
1072/* NetBSD-specific note name */
1073#define ELF_NOTE_MCMODEL_NAME ELF_NOTE_NETBSD_NAME
1074
1075
1076#if !defined(ELFSIZE)
1077# if defined(_RUMPKERNEL) || !defined(_KERNEL)
1078# define ELFSIZE ARCH_ELFSIZE
1079# else
1080# define ELFSIZE KERN_ELFSIZE
1081# endif
1082#endif
1083
1084#if defined(ELFSIZE)
1085#define CONCAT(x,y) __CONCAT(x,y)
1086#define ELFNAME(x) CONCAT(elf,CONCAT(ELFSIZE,CONCAT(_,x)))
1087#define ELFNAME2(x,y) CONCAT(x,CONCAT(_elf,CONCAT(ELFSIZE,CONCAT(_,y))))
1088#define ELFNAMEEND(x) CONCAT(x,CONCAT(_elf,ELFSIZE))
1089#define ELFDEFNNAME(x) CONCAT(ELF,CONCAT(ELFSIZE,CONCAT(_,x)))
1090#define ElfW(x) CONCAT(Elf,CONCAT(ELFSIZE,CONCAT(_,x)))
1091#endif
1092
1093#if defined(ELFSIZE) && (ELFSIZE == 32)
1094#define Elf_Ehdr Elf32_Ehdr
1095#define Elf_Phdr Elf32_Phdr
1096#define Elf_Shdr Elf32_Shdr
1097#define Elf_Sym Elf32_Sym
1098#define Elf_Rel Elf32_Rel
1099#define Elf_Rela Elf32_Rela
1100#define Elf_Dyn Elf32_Dyn
1101#define Elf_Word Elf32_Word
1102#define Elf_Sword Elf32_Sword
1103#define Elf_Half Elf32_Half
1104#define Elf_Addr Elf32_Addr
1105#define Elf_Off Elf32_Off
1106#define Elf_SOff Elf32_SOff
1107#define Elf_Nhdr Elf32_Nhdr
1108#define Elf_Verdef Elf32_Verdef
1109#define Elf_Verdaux Elf32_Verdaux
1110#define Elf_Verneed Elf32_Verneed
1111#define Elf_Vernaux Elf32_Vernaux
1112#define Elf_Versym Elf32_Versym
1113
1114#define ELF_R_SYM ELF32_R_SYM
1115#define ELF_R_TYPE ELF32_R_TYPE
1116#define ELFCLASS ELFCLASS32
1117
1118#define AuxInfo Aux32Info
1119#elif defined(ELFSIZE) && (ELFSIZE == 64)
1120#define Elf_Ehdr Elf64_Ehdr
1121#define Elf_Phdr Elf64_Phdr
1122#define Elf_Shdr Elf64_Shdr
1123#define Elf_Sym Elf64_Sym
1124#define Elf_Rel Elf64_Rel
1125#define Elf_Rela Elf64_Rela
1126#define Elf_Dyn Elf64_Dyn
1127#define Elf_Word Elf64_Word
1128#define Elf_Sword Elf64_Sword
1129#define Elf_Half Elf64_Half
1130#define Elf_Addr Elf64_Addr
1131#define Elf_Off Elf64_Off
1132#define Elf_SOff Elf64_SOff
1133#define Elf_Nhdr Elf64_Nhdr
1134#define Elf_Verdef Elf64_Verdef
1135#define Elf_Verdaux Elf64_Verdaux
1136#define Elf_Verneed Elf64_Verneed
1137#define Elf_Vernaux Elf64_Vernaux
1138#define Elf_Versym Elf64_Versym
1139
1140#define ELF_R_SYM ELF64_R_SYM
1141#define ELF_R_TYPE ELF64_R_TYPE
1142#define ELFCLASS ELFCLASS64
1143
1144#define AuxInfo Aux64Info
1145#endif
1146
1147#ifndef Elf_Symindx
1148#define Elf_Symindx uint32_t
1149#endif
1150
1151#define ELF32_ST_BIND(info) ELF_ST_BIND(info)
1152#define ELF32_ST_TYPE(info) ELF_ST_TYPE(info)
1153#define ELF32_ST_INFO(bind,type) ELF_ST_INFO(bind,type)
1154#define ELF32_ST_VISIBILITY(other) ELF_ST_VISIBILITY(other)
1155
1156#define ELF64_ST_BIND(info) ELF_ST_BIND(info)
1157#define ELF64_ST_TYPE(info) ELF_ST_TYPE(info)
1158#define ELF64_ST_INFO(bind,type) ELF_ST_INFO(bind,type)
1159#define ELF64_ST_VISIBILITY(other) ELF_ST_VISIBILITY(other)
1160
1161typedef struct {
1162 Elf32_Half si_boundto; /* direct bindings - symbol bound to */
1163 Elf32_Half si_flags; /* per symbol flags */
1164} Elf32_Syminfo;
1165
1166typedef struct {
1167 Elf64_Word si_boundto; /* direct bindings - symbol bound to */
1168 Elf64_Word si_flags; /* per symbol flags */
1169} Elf64_Syminfo;
1170
1171#define SYMINFO_FLG_DIRECT 0x0001 /* symbol ref has direct association
1172 to object containing definition */
1173#define SYMINFO_FLG_PASSTHRU 0x0002 /* ignored - see SYMINFO_FLG_FILTER */
1174#define SYMINFO_FLG_COPY 0x0004 /* symbol is a copy-reloc */
1175#define SYMINFO_FLG_LAZYLOAD 0x0008 /* object containing defn should be
1176 lazily-loaded */
1177#define SYMINFO_FLG_DIRECTBIND 0x0010 /* ref should be bound directly to
1178 object containing definition */
1179#define SYMINFO_FLG_NOEXTDIRECT 0x0020 /* don't let an external reference
1180 directly bind to this symbol */
1181#define SYMINFO_FLG_FILTER 0x0002 /* symbol ref is associated to a */
1182#define SYMINFO_FLG_AUXILIARY 0x0040 /* standard or auxiliary filter */
1183
1184#define SYMINFO_BT_SELF 0xffff /* symbol bound to self */
1185#define SYMINFO_BT_PARENT 0xfffe /* symbol bound to parent */
1186#define SYMINFO_BT_NONE 0xfffd /* no special symbol binding */
1187#define SYMINFO_BT_EXTERN 0xfffc /* symbol defined as external */
1188#define SYMINFO_BT_LOWRESERVE 0xff00 /* beginning of reserved entries */
1189
1190#define SYMINFO_NONE 0 /* Syminfo version */
1191#define SYMINFO_CURRENT 1
1192#define SYMINFO_NUM 2
1193
1194/*
1195 * These constants are used for Elf32_Verdef struct's version number.
1196 */
1197#define VER_DEF_NONE 0
1198#define VER_DEF_CURRENT 1
1199
1200/*
1201 * These constants are used for Elf32_Verdef struct's vd_ndx.
1202 */
1203#define VER_DEF_IDX(x) VER_NDX(x)
1204
1205/*
1206 * These constants are used for Elf32_Verdef struct's vd_flags.
1207 */
1208#define VER_FLG_BASE 0x1
1209#define VER_FLG_WEAK 0x2
1210
1211/*
1212 * These are used in an Elf32_Versym field.
1213 */
1214#define VER_NDX_LOCAL 0
1215#define VER_NDX_GLOBAL 1
1216#define VER_NDX_GIVEN 2
1217
1218/*
1219 * These constants are used for Elf32_Verneed struct's version number.
1220 */
1221#define VER_NEED_NONE 0
1222#define VER_NEED_CURRENT 1
1223
1224/*
1225 * These constants are used for Elf32_Vernaux struct's vna_other.
1226 */
1227#define VER_NEED_HIDDEN VER_NDX_HIDDEN
1228#define VER_NEED_IDX(x) VER_NDX(x)
1229
1230/* index */
1231#define VER_NDX_HIDDEN 0x8000
1232#define VER_NDX(x) ((x) & ~VER_NDX_HIDDEN)
1233
1234/*
1235 * GNU Extension hidding symbol
1236 */
1237#define VERSYM_HIDDEN 0x8000
1238#define VERSYM_VERSION 0x7fff
1239
1240#define ELF_VER_CHR '@'
1241
1242/*
1243 * These are current size independent.
1244 */
1245
1246typedef struct {
1247 Elf32_Half vd_version; /* version number of structure */
1248 Elf32_Half vd_flags; /* flags (VER_FLG_*) */
1249 Elf32_Half vd_ndx; /* version index */
1250 Elf32_Half vd_cnt; /* number of verdaux entries */
1251 Elf32_Word vd_hash; /* hash of name */
1252 Elf32_Word vd_aux; /* offset to verdaux entries */
1253 Elf32_Word vd_next; /* offset to next verdef */
1254} Elf32_Verdef;
1255typedef Elf32_Verdef Elf64_Verdef;
1256
1257typedef struct {
1258 Elf32_Word vda_name; /* string table offset of name */
1259 Elf32_Word vda_next; /* offset to verdaux */
1260} Elf32_Verdaux;
1261typedef Elf32_Verdaux Elf64_Verdaux;
1262
1263typedef struct {
1264 Elf32_Half vn_version; /* version number of structure */
1265 Elf32_Half vn_cnt; /* number of vernaux entries */
1266 Elf32_Word vn_file; /* string table offset of library name*/
1267 Elf32_Word vn_aux; /* offset to vernaux entries */
1268 Elf32_Word vn_next; /* offset to next verneed */
1269} Elf32_Verneed;
1270typedef Elf32_Verneed Elf64_Verneed;
1271
1272typedef struct {
1273 Elf32_Word vna_hash; /* Hash of dependency name */
1274 Elf32_Half vna_flags; /* flags (VER_FLG_*) */
1275 Elf32_Half vna_other; /* unused */
1276 Elf32_Word vna_name; /* string table offset to version name*/
1277 Elf32_Word vna_next; /* offset to next vernaux */
1278} Elf32_Vernaux;
1279typedef Elf32_Vernaux Elf64_Vernaux;
1280
1281typedef struct {
1282 Elf32_Half vs_vers;
1283} Elf32_Versym;
1284typedef Elf32_Versym Elf64_Versym;
1285
1286#ifdef _KERNEL
1287
1288/*
1289 * Arbitrary limits to avoid DoS for excessive memory allocation.
1290 */
1291#define ELF_MAXPHNUM 128
1292#define ELF_MAXSHNUM 32768
1293#define ELF_MAXNOTESIZE 1024
1294
1295#define ELF_AUX_ENTRIES 15 /* Max size of aux array passed to loader */
1296#define ELF32_NO_ADDR (~(Elf32_Addr)0) /* Indicates addr. not yet filled in */
1297#define ELF32_LINK_ADDR ((Elf32_Addr)-2) /* advises to use link address */
1298#define ELF64_NO_ADDR (~(Elf64_Addr)0) /* Indicates addr. not yet filled in */
1299#define ELF64_LINK_ADDR ((Elf64_Addr)-2) /* advises to use link address */
1300
1301#if defined(ELFSIZE) && (ELFSIZE == 64)
1302#define ELF_NO_ADDR ELF64_NO_ADDR
1303#define ELF_LINK_ADDR ELF64_LINK_ADDR
1304#elif defined(ELFSIZE) && (ELFSIZE == 32)
1305#define ELF_NO_ADDR ELF32_NO_ADDR
1306#define ELF_LINK_ADDR ELF32_LINK_ADDR
1307#endif
1308
1309#ifndef ELF32_EHDR_FLAGS_OK
1310#define ELF32_EHDR_FLAGS_OK(eh) 1
1311#endif
1312
1313#ifndef ELF64_EHDR_FLAGS_OK
1314#define ELF64_EHDR_FLAGS_OK(eh) 1
1315#endif
1316
1317#if defined(ELFSIZE) && (ELFSIZE == 64)
1318#define ELF_EHDR_FLAGS_OK(eh) ELF64_EHDR_FLAGS_OK(eh)
1319#else
1320#define ELF_EHDR_FLAGS_OK(eh) ELF32_EHDR_FLAGS_OK(eh)
1321#endif
1322
1323#if defined(ELFSIZE)
1324struct elf_args {
1325 Elf_Addr arg_entry; /* program entry point */
1326 Elf_Addr arg_interp; /* Interpreter load address */
1327 Elf_Addr arg_phaddr; /* program header address */
1328 Elf_Addr arg_phentsize; /* Size of program header */
1329 Elf_Addr arg_phnum; /* Number of program headers */
1330};
1331#endif
1332
1333#ifdef _KERNEL_OPT
1334#include "opt_execfmt.h"
1335#endif
1336
1337struct ps_strings;
1338struct coredump_iostate;
1339struct note_state;
1340struct exec_package;
1341
1342#ifdef EXEC_ELF32
1343int exec_elf32_makecmds(struct lwp *, struct exec_package *);
1344int elf32_populate_auxv(struct lwp *, struct exec_package *, char **);
1345int elf32_copyargs(struct lwp *, struct exec_package *,
1346 struct ps_strings *, char **, void *);
1347
1348int coredump_elf32(struct lwp *, struct coredump_iostate *);
1349void coredump_savenote_elf32(struct note_state *, unsigned int,
1350 const char *, void *, size_t);
1351
1352int elf32_check_header(Elf32_Ehdr *);
1353#endif
1354
1355#ifdef EXEC_ELF64
1356int exec_elf64_makecmds(struct lwp *, struct exec_package *);
1357int elf64_populate_auxv(struct lwp *, struct exec_package *, char **);
1358int elf64_copyargs(struct lwp *, struct exec_package *,
1359 struct ps_strings *, char **, void *);
1360
1361int coredump_elf64(struct lwp *, struct coredump_iostate *);
1362void coredump_savenote_elf64(struct note_state *, unsigned int,
1363 const char *, void *, size_t);
1364
1365int elf64_check_header(Elf64_Ehdr *);
1366#endif
1367
1368#endif /* _KERNEL */
1369
1370#endif /* !_SYS_EXEC_ELF_H_ */
1371