rtld: add RELRO support
[dragonfly.git] / sys / sys / elf_common.h
CommitLineData
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1/*-
2 * Copyright (c) 1998 John D. Polstra.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
fcf53d9b 26 * $FreeBSD: src/sys/sys/elf_common.h,v 1.37 2010/11/23 12:51:08 kib Exp $
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27 */
28
29#ifndef _SYS_ELF_COMMON_H_
f8334305 30#define _SYS_ELF_COMMON_H_
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32#ifndef _SYS_TYPES_H_
33#include <sys/types.h>
34#endif
35
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36/*
37 * ELF definitions that are independent of architecture or word size.
38 */
39
40/*
41 * Note header. The ".note" section contains an array of notes. Each
42 * begins with this header, aligned to a word boundary. Immediately
43 * following the note header is n_namesz bytes of name, padded to the
44 * next word boundary. Then comes n_descsz bytes of descriptor, again
45 * padded to a word boundary. The values of n_namesz and n_descsz do
46 * not include the padding.
47 */
48
49typedef struct {
50 u_int32_t n_namesz; /* Length of name. */
51 u_int32_t n_descsz; /* Length of descriptor. */
52 u_int32_t n_type; /* Type of this note. */
53} Elf_Note;
54
55/* Indexes into the e_ident array. Keep synced with
139b8f34 56 http://www.sco.com/developers/gabi/latest/ch4.eheader.html */
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57#define EI_MAG0 0 /* Magic number, byte 0. */
58#define EI_MAG1 1 /* Magic number, byte 1. */
59#define EI_MAG2 2 /* Magic number, byte 2. */
60#define EI_MAG3 3 /* Magic number, byte 3. */
61#define EI_CLASS 4 /* Class of machine. */
62#define EI_DATA 5 /* Data format. */
63#define EI_VERSION 6 /* ELF format version. */
64#define EI_OSABI 7 /* Operating system / ABI identification */
65#define EI_ABIVERSION 8 /* ABI version */
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66#define EI_PAD 9 /* Start of padding (per SVR4 ABI). */
67#define EI_NIDENT 16 /* Size of e_ident array. */
68
69/* Values for the magic number bytes. */
70#define ELFMAG0 0x7f
71#define ELFMAG1 'E'
72#define ELFMAG2 'L'
73#define ELFMAG3 'F'
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74#define ELFMAG "\177ELF" /* magic string */
75#define SELFMAG 4 /* magic string size */
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76
77/* Values for e_ident[EI_VERSION] and e_version. */
78#define EV_NONE 0
79#define EV_CURRENT 1
80
81/* Values for e_ident[EI_CLASS]. */
82#define ELFCLASSNONE 0 /* Unknown class. */
83#define ELFCLASS32 1 /* 32-bit architecture. */
84#define ELFCLASS64 2 /* 64-bit architecture. */
85
86/* Values for e_ident[EI_DATA]. */
87#define ELFDATANONE 0 /* Unknown data format. */
88#define ELFDATA2LSB 1 /* 2's complement little-endian. */
89#define ELFDATA2MSB 2 /* 2's complement big-endian. */
90
91/* Values for e_ident[EI_OSABI]. */
fcf53d9b 92#define ELFOSABI_NONE 0 /* UNIX System V ABI */
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93#define ELFOSABI_HPUX 1 /* HP-UX operating system */
94#define ELFOSABI_NETBSD 2 /* NetBSD */
95#define ELFOSABI_LINUX 3 /* GNU/Linux */
96#define ELFOSABI_HURD 4 /* GNU/Hurd */
97#define ELFOSABI_86OPEN 5 /* 86Open common IA32 ABI */
98#define ELFOSABI_SOLARIS 6 /* Solaris */
fcf53d9b 99#define ELFOSABI_AIX 7 /* AIX */
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100#define ELFOSABI_IRIX 8 /* IRIX */
101#define ELFOSABI_FREEBSD 9 /* FreeBSD */
102#define ELFOSABI_TRU64 10 /* TRU64 UNIX */
103#define ELFOSABI_MODESTO 11 /* Novell Modesto */
104#define ELFOSABI_OPENBSD 12 /* OpenBSD */
fcf53d9b 105#define ELFOSABI_OPENVMS 13 /* Open VMS */
1d435259 106#define ELFOSABI_NSK 14 /* HP Non-Stop Kernel */
fcf53d9b 107#define ELFOSABI_AROS 15 /* Amiga Research OS */
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108#define ELFOSABI_ARM 97 /* ARM */
109#define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */
110
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111#define ELFOSABI_SYSV ELFOSABI_NONE /* symbol used in old spec */
112#define ELFOSABI_MONTEREY ELFOSABI_AIX /* Monterey */
113
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114/* e_ident */
115#define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \
116 (ehdr).e_ident[EI_MAG1] == ELFMAG1 && \
117 (ehdr).e_ident[EI_MAG2] == ELFMAG2 && \
118 (ehdr).e_ident[EI_MAG3] == ELFMAG3)
119
120/* Values for e_type. */
121#define ET_NONE 0 /* Unknown type. */
122#define ET_REL 1 /* Relocatable. */
123#define ET_EXEC 2 /* Executable. */
124#define ET_DYN 3 /* Shared object. */
125#define ET_CORE 4 /* Core file. */
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126#define ET_LOOS 0xfe00 /* First operating system specific. */
127#define ET_HIOS 0xfeff /* Last operating system-specific. */
128#define ET_LOPROC 0xff00 /* First processor-specific. */
129#define ET_HIPROC 0xffff /* Last processor-specific. */
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130
131/* Values for e_machine. */
132#define EM_NONE 0 /* Unknown machine. */
133#define EM_M32 1 /* AT&T WE32100. */
134#define EM_SPARC 2 /* Sun SPARC. */
135#define EM_386 3 /* Intel i386. */
136#define EM_68K 4 /* Motorola 68000. */
137#define EM_88K 5 /* Motorola 88000. */
984263bc 138#define EM_860 7 /* Intel i860. */
139b8f34 139#define EM_MIPS 8 /* MIPS R3000 Big-Endian only. */
139b8f34 140#define EM_S370 9 /* IBM System/370. */
fcf53d9b 141#define EM_MIPS_RS3_LE 10 /* MIPS R3000 Little-Endian. */
139b8f34 142#define EM_PARISC 15 /* HP PA-RISC. */
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143#define EM_VPP500 17 /* Fujitsu VPP500. */
144#define EM_SPARC32PLUS 18 /* SPARC v8plus. */
145#define EM_960 19 /* Intel 80960. */
146#define EM_PPC 20 /* PowerPC 32-bit. */
147#define EM_PPC64 21 /* PowerPC 64-bit. */
148#define EM_S390 22 /* IBM System/390. */
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149#define EM_V800 36 /* NEC V800. */
150#define EM_FR20 37 /* Fujitsu FR20. */
151#define EM_RH32 38 /* TRW RH-32. */
152#define EM_RCE 39 /* Motorola RCE. */
153#define EM_ARM 40 /* ARM. */
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154#define EM_SH 42 /* Hitachi SH. */
155#define EM_SPARCV9 43 /* SPARC v9 64-bit. */
156#define EM_TRICORE 44 /* Siemens TriCore embedded processor. */
157#define EM_ARC 45 /* Argonaut RISC Core. */
158#define EM_H8_300 46 /* Hitachi H8/300. */
159#define EM_H8_300H 47 /* Hitachi H8/300H. */
160#define EM_H8S 48 /* Hitachi H8S. */
161#define EM_H8_500 49 /* Hitachi H8/500. */
162#define EM_IA_64 50 /* Intel IA-64 Processor. */
163#define EM_MIPS_X 51 /* Stanford MIPS-X. */
164#define EM_COLDFIRE 52 /* Motorola ColdFire. */
165#define EM_68HC12 53 /* Motorola M68HC12. */
166#define EM_MMA 54 /* Fujitsu MMA. */
167#define EM_PCP 55 /* Siemens PCP. */
168#define EM_NCPU 56 /* Sony nCPU. */
169#define EM_NDR1 57 /* Denso NDR1 microprocessor. */
170#define EM_STARCORE 58 /* Motorola Star*Core processor. */
171#define EM_ME16 59 /* Toyota ME16 processor. */
172#define EM_ST100 60 /* STMicroelectronics ST100 processor. */
173#define EM_TINYJ 61 /* Advanced Logic Corp. TinyJ processor. */
984263bc 174#define EM_X86_64 62 /* Advanced Micro Devices x86-64 */
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175#define EM_PDSP 63 /* Sony DSP Processor */
176#define EM_FX66 66 /* Siemens FX66 microcontroller */
177#define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16 mc */
178#define EM_ST7 68 /* STmicroelectronics ST7 8 bit mc */
179#define EM_68HC16 69 /* Motorola MC68HC16 microcontroller */
180#define EM_68HC11 70 /* Motorola MC68HC11 microcontroller */
181#define EM_68HC08 71 /* Motorola MC68HC08 microcontroller */
182#define EM_68HC05 72 /* Motorola MC68HC05 microcontroller */
183#define EM_SVX 73 /* Silicon Graphics SVx */
184#define EM_ST19 74 /* STMicroelectronics ST19 8 bit mc */
185#define EM_VAX 75 /* Digital VAX */
186#define EM_CRIS 76 /* Axis Comm. 32-bit embedded processor */
187#define EM_JAVELIN 77 /* Infineon Tech. 32-bit embedded processor */
188#define EM_FIREPATH 78 /* Element 14 64-bit DSP Processor */
189#define EM_ZSP 79 /* LSI Logic 16-bit DSP Processor */
190#define EM_MMIX 80 /* Donald Knuth's educational 64-bit proc */
191#define EM_HUANY 81 /* Harvard Uni. machine-independent obj files */
192#define EM_PRISM 82 /* SiTera Prism */
193#define EM_AVR 83 /* Atmel AVR 8-bit microcontroller */
194#define EM_FR30 84 /* Fujitsu FR30 */
195#define EM_D10V 85 /* Mitsubishi D10V */
196#define EM_D30V 86 /* Mitsubishi D30V */
197#define EM_V850 87 /* NEC v850 */
198#define EM_M32R 88 /* Mitsubishi M32R */
199#define EM_MN10300 89 /* Matsushita MN10300 */
200#define EM_MN10200 90 /* Matsushita MN10200 */
201#define EM_PJ 91 /* picoJava */
202#define EM_OPENRISC 92 /* OpenRISC 32-bit embedded processor */
203#define EM_ARC_A5 93 /* ARC Cores Tangent-A5 */
204#define EM_XTENSA 94 /* Tensilica Xtensa Architecture */
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205#define EM_VIDEOCORE 95 /* Alphamosaic VideoCore processor */
206#define EM_TMM_GPP 96 /* Thompson Multimedia General Purpose Proc */
207#define EM_NS32K 97 /* National Semiconductor 32000 series */
208#define EM_TPC 98 /* Tenor Network TPC processor */
209#define EM_SNP1K 99 /* Trebia SNP 1000 processor */
210#define EM_ST200 100 /* STMicroelectronics ST200 microcontroller */
211#define EM_IP2K 101 /* Ubicom IP2xxx microcontroller family */
212#define EM_MAX 102 /* MAX Processor */
213#define EM_CR 103 /* NatSemi CompactRISC microprocessor */
214#define EM_F2MC16 104 /* Fujitsu F2MC16 */
215#define EM_MSP430 105 /* TI embedded microcontroller msp430 */
216#define EM_BLACKFIN 106 /* Analog Devices Blackfin (DSP) processor */
217#define EM_SE_C33 107 /* S1C33 Family of Seiko Epson processors */
218#define EM_SEP 108 /* Sharp embedded microprocessor */
219#define EM_ARCA 109 /* Arca RISC Microprocessor */
220#define EM_UNICORE 110 /* Microprocessor series from PKU-Unity Ltd. */
221 /* and MPRC of Peking University */
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222
223/* Non-standard or deprecated. */
224#define EM_486 6 /* Intel i486. */
225#define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */
226#define EM_ALPHA_STD 41 /* Digital Alpha (standard value). */
cfade883 227#define EM_ALPHA 0x9026 /* Alpha (written in the absence of an ABI) */
fcf53d9b 228
434cb74d 229#define EM_NUM 111
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230
231/* Special section indexes. */
232#define SHN_UNDEF 0 /* Undefined, missing, irrelevant. */
233#define SHN_LORESERVE 0xff00 /* First of reserved range. */
234#define SHN_LOPROC 0xff00 /* First processor-specific. */
235#define SHN_HIPROC 0xff1f /* Last processor-specific. */
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236#define SHN_LOOS 0xff20 /* First operating system-specific. */
237#define SHN_HIOS 0xff3f /* Last operating system-specific. */
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238#define SHN_ABS 0xfff1 /* Absolute values. */
239#define SHN_COMMON 0xfff2 /* Common data. */
139b8f34 240#define SHN_XINDEX 0xffff /* Escape -- index stored elsewhere. */
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241#define SHN_HIRESERVE 0xffff /* Last of reserved range. */
242
243/* sh_type */
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244#define SHT_NULL 0 /* inactive */
245#define SHT_PROGBITS 1 /* program defined information */
246#define SHT_SYMTAB 2 /* symbol table section */
247#define SHT_STRTAB 3 /* string table section */
139b8f34 248#define SHT_RELA 4 /* relocation section with addends */
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249#define SHT_HASH 5 /* symbol hash table section */
250#define SHT_DYNAMIC 6 /* dynamic section */
251#define SHT_NOTE 7 /* note section */
252#define SHT_NOBITS 8 /* no space section */
139b8f34 253#define SHT_REL 9 /* relocation section - no addends */
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254#define SHT_SHLIB 10 /* reserved - purpose unknown */
255#define SHT_DYNSYM 11 /* dynamic symbol table section */
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256#define SHT_INIT_ARRAY 14 /* Initialization function pointers. */
257#define SHT_FINI_ARRAY 15 /* Termination function pointers. */
258#define SHT_PREINIT_ARRAY 16 /* Pre-initialization function ptrs. */
259#define SHT_GROUP 17 /* Section group. */
260#define SHT_SYMTAB_SHNDX 18 /* Section indexes (see SHN_XINDEX). */
261
fcf53d9b 262#define SHT_NUM 19 /* number of section types */
139b8f34 263
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264#define SHT_LOOS 0x60000000 /* First of OS specific semantics */
265#define SHT_HIOS 0x6fffffff /* Last of OS specific semantics */
266#define SHT_LOPROC 0x70000000 /* reserved range for processor */
267#define SHT_AMD64_UNWIND 0x70000001 /* unwind information */
268#define SHT_HIPROC 0x7fffffff /* specific section header types */
269#define SHT_LOUSER 0x80000000 /* reserved range for application */
270#define SHT_HIUSER 0xffffffff /* specific indexes */
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271
272/* Flags for sh_flags. */
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273#define SHF_WRITE 0x1 /* Section contains writable data. */
274#define SHF_ALLOC 0x2 /* Section occupies memory. */
275#define SHF_EXECINSTR 0x4 /* Section contains instructions. */
276#define SHF_MERGE 0x10 /* Section may be merged. */
277#define SHF_STRINGS 0x20 /* Section contains strings. */
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278#define SHF_INFO_LINK 0x40 /* sh_info holds section index. */
279#define SHF_LINK_ORDER 0x80 /* Special ordering requirements. */
280#define SHF_OS_NONCONFORMING 0x100 /* OS-specific processing required. */
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281#define SHF_GROUP 0x200 /* Member of section group. */
282#define SHF_TLS 0x400 /* Section contains TLS data. */
283#define SHF_MASKOS 0x0ff00000 /* OS-specific semantics. */
284#define SHF_MASKPROC 0xf0000000 /* Processor-specific semantics. */
984263bc 285
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286/* Section group flags. */
287#define GRP_COMDAT 0x1 /* Group is a COMDAT. */
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288#define GRP_MASKOS 0x0ff00000 /* Reserved for OS-specific. */
289#define GRP_MASKPROC 0xf0000000 /* Reserved for processor-specific. */
7204f479 290
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291/* Values for p_type. */
292#define PT_NULL 0 /* Unused entry. */
293#define PT_LOAD 1 /* Loadable segment. */
294#define PT_DYNAMIC 2 /* Dynamic linking information segment. */
295#define PT_INTERP 3 /* Pathname of interpreter. */
296#define PT_NOTE 4 /* Auxiliary information. */
297#define PT_SHLIB 5 /* Reserved (not used). */
298#define PT_PHDR 6 /* Location of program header itself. */
fcf53d9b 299#define PT_TLS 7 /* Thread local storage segment */
984263bc 300
167f7029 301#define PT_COUNT 8 /* Number of defined p_type values. */
984263bc 302
139b8f34 303#define PT_LOOS 0x60000000 /* First OS-specific. */
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304#define PT_GNU_EH_FRAME 0x6474e550 /* GCC .eh_frame_hdr segment */
305#define PT_GNU_STACK 0x6474e551 /* Indicates stack executability */
306#define PT_GNU_RELRO 0x6474e552 /* Read-only after relocation */
139b8f34 307#define PT_HIOS 0x6fffffff /* Last OS-specific. */
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308#define PT_LOPROC 0x70000000 /* First processor-specific type. */
309#define PT_HIPROC 0x7fffffff /* Last processor-specific type. */
310
311/* Values for p_flags. */
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312#define PF_X 0x1 /* Executable. */
313#define PF_W 0x2 /* Writable. */
314#define PF_R 0x4 /* Readable. */
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315#define PF_MASKOS 0x0ff00000 /* Operating system-specific. */
316#define PF_MASKPROC 0xf0000000 /* Processor-specific. */
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317
318/* Values for d_tag. */
319#define DT_NULL 0 /* Terminating entry. */
320#define DT_NEEDED 1 /* String table offset of a needed shared
321 library. */
322#define DT_PLTRELSZ 2 /* Total size in bytes of PLT relocations. */
323#define DT_PLTGOT 3 /* Processor-dependent address. */
324#define DT_HASH 4 /* Address of symbol hash table. */
325#define DT_STRTAB 5 /* Address of string table. */
326#define DT_SYMTAB 6 /* Address of symbol table. */
327#define DT_RELA 7 /* Address of ElfNN_Rela relocations. */
328#define DT_RELASZ 8 /* Total size of ElfNN_Rela relocations. */
329#define DT_RELAENT 9 /* Size of each ElfNN_Rela relocation entry. */
330#define DT_STRSZ 10 /* Size of string table. */
331#define DT_SYMENT 11 /* Size of each symbol table entry. */
332#define DT_INIT 12 /* Address of initialization function. */
333#define DT_FINI 13 /* Address of finalization function. */
334#define DT_SONAME 14 /* String table offset of shared object
335 name. */
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336#define DT_RPATH 15 /* String table offset of library path. [sup] */
337#define DT_SYMBOLIC 16 /* Indicates "symbolic" linking. [sup] */
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338#define DT_REL 17 /* Address of ElfNN_Rel relocations. */
339#define DT_RELSZ 18 /* Total size of ElfNN_Rel relocations. */
340#define DT_RELENT 19 /* Size of each ElfNN_Rel relocation. */
341#define DT_PLTREL 20 /* Type of relocation used for PLT. */
342#define DT_DEBUG 21 /* Reserved (not used). */
343#define DT_TEXTREL 22 /* Indicates there may be relocations in
167f7029 344 non-writable segments. [sup] */
984263bc 345#define DT_JMPREL 23 /* Address of PLT relocations. */
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346#define DT_BIND_NOW 24 /* [sup] */
347#define DT_INIT_ARRAY 25 /* Address of the array of pointers to
167f7029 348 initialization functions */
fcf53d9b 349#define DT_FINI_ARRAY 26 /* Address of the array of pointers to
167f7029 350 termination functions */
fcf53d9b 351#define DT_INIT_ARRAYSZ 27 /* Size in bytes of the array of
167f7029 352 initialization functions. */
fcf53d9b 353#define DT_FINI_ARRAYSZ 28 /* Size in bytes of the array of
167f7029 354 terminationfunctions. */
fcf53d9b 355#define DT_RUNPATH 29 /* String table offset of a null-terminated
167f7029 356 library search path string. */
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357#define DT_FLAGS 30 /* Object specific flag values. */
358#define DT_ENCODING 32 /* Values greater than or equal to DT_ENCODING
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359 and less than DT_LOOS follow the rules for
360 the interpretation of the d_un union
fcf53d9b 361 as follows: even == 'd_ptr', odd == 'd_val'
167f7029 362 or none */
fcf53d9b 363#define DT_PREINIT_ARRAY 32 /* Address of the array of pointers to
167f7029 364 pre-initialization functions. */
fcf53d9b 365#define DT_PREINIT_ARRAYSZ 33 /* Size in bytes of the array of
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366 pre-initialization functions. */
367
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368#define DT_COUNT 34 /* Number of defined d_tag values. */
369
370#define DT_LOOS 0x6000000d /* First OS-specific */
371#define DT_HIOS 0x6fff0000 /* Last OS-specific */
984263bc 372
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373/*
374 * DT_* entries which fall between DT_VALRNGHI & DT_VALRNGLO use the
375 * Dyn.d_un.d_val field of the Elf*_Dyn structure.
376 */
377#define DT_VALRNGLO 0x6ffffd00
378#define DT_CHECKSUM 0x6ffffdf8 /* elf checksum */
379#define DT_PLTPADSZ 0x6ffffdf9 /* pltpadding size */
380#define DT_MOVEENT 0x6ffffdfa /* move table entry size */
381#define DT_MOVESZ 0x6ffffdfb /* move table size */
382#define DT_FEATURE_1 0x6ffffdfc /* feature holder */
383#define DT_POSFLAG_1 0x6ffffdfd /* flags for DT_* entries, effecting */
384 /* the following DT_* entry. */
385 /* See DF_P1_* definitions */
386#define DT_SYMINSZ 0x6ffffdfe /* syminfo table size (in bytes) */
387#define DT_SYMINENT 0x6ffffdff /* syminfo entry size (in bytes) */
388#define DT_VALRNGHI 0x6ffffdff
389
390/*
391 * DT_* entries which fall between DT_ADDRRNGHI & DT_ADDRRNGLO use the
392 * Dyn.d_un.d_ptr field of the Elf*_Dyn structure.
393 *
394 * If any adjustment is made to the ELF object after it has been
395 * built, these entries will need to be adjusted.
396 */
397#define DT_ADDRRNGLO 0x6ffffe00
398#define DT_GNU_HASH 0x6ffffef5 /* GNU-style hash table */
399#define DT_CONFIG 0x6ffffefa /* configuration information */
400#define DT_DEPAUDIT 0x6ffffefb /* dependency auditing */
401#define DT_AUDIT 0x6ffffefc /* object auditing */
402#define DT_PLTPAD 0x6ffffefd /* pltpadding (sparcv9) */
403#define DT_MOVETAB 0x6ffffefe /* move table */
404#define DT_SYMINFO 0x6ffffeff /* syminfo table */
405#define DT_ADDRRNGHI 0x6ffffeff
406
407#define DT_VERSYM 0x6ffffff0 /* Address of versym section. */
408#define DT_RELACOUNT 0x6ffffff9 /* number of RELATIVE relocations */
409#define DT_RELCOUNT 0x6ffffffa /* number of RELATIVE relocations */
410#define DT_FLAGS_1 0x6ffffffb /* state flags - see DF_1_* defs */
411#define DT_VERDEF 0x6ffffffc /* Address of verdef section. */
412#define DT_VERDEFNUM 0x6ffffffd /* Number of elems in verdef section */
413#define DT_VERNEED 0x6ffffffe /* Address of verneed section. */
414#define DT_VERNEEDNUM 0x6fffffff /* Number of elems in verneed section */
415
416#define DT_LOPROC 0x70000000 /* First processor-specific type. */
417#define DT_AUXILIARY 0x7ffffffd /* shared library auxiliary name */
418#define DT_USED 0x7ffffffe /* ignored - same as needed */
419#define DT_FILTER 0x7fffffff /* shared library filter name */
420#define DT_HIPROC 0x7fffffff /* Last processor-specific type. */
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421
422/* Values for DT_FLAGS */
fcf53d9b 423#define DF_ORIGIN 0x0001 /* Indicates that the object being loaded may
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424 make reference to the $ORIGIN substitution
425 string */
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426#define DF_SYMBOLIC 0x0002 /* Indicates "symbolic" linking. */
427#define DF_TEXTREL 0x0004 /* Indicates there may be relocations in
167f7029 428 non-writable segments. */
fcf53d9b 429#define DF_BIND_NOW 0x0008 /* Indicates that the dynamic linker should
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430 process all relocations for the object
431 containing this entry before transferring
432 control to the program. */
fcf53d9b 433#define DF_STATIC_TLS 0x0010 /* Indicates that the shared object or
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434 executable contains code using a static
435 thread-local storage scheme. */
984263bc 436
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437/* Values for DT_FLAGS_1 */
438#define DF_1_BIND_NOW 0x00000001 /* Same as DF_BIND_NOW */
439#define DF_1_GLOBAL 0x00000002 /* Set the RTLD_GLOBAL for object */
440#define DF_1_NODELETE 0x00000008 /* Set the RTLD_NODELETE for object */
441#define DF_1_LOADFLTR 0x00000010 /* Immediate loading of filtees */
442#define DF_1_NOOPEN 0x00000040 /* Do not allow loading on dlopen() */
443#define DF_1_ORIGIN 0x00000080 /* Process $ORIGIN */
444
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445/* Values for n_type. Used in core files. */
446#define NT_PRSTATUS 1 /* Process status. */
447#define NT_FPREGSET 2 /* Floating point registers. */
448#define NT_PRPSINFO 3 /* Process state info. */
fcf53d9b 449#define NT_THRMISC 7 /* Thread miscellaneous info. */
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450
451/* Symbol Binding - ELFNN_ST_BIND - st_info */
452#define STB_LOCAL 0 /* Local symbol */
453#define STB_GLOBAL 1 /* Global symbol */
454#define STB_WEAK 2 /* like global - lower precedence */
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455#define STB_LOOS 10 /* Reserved range for operating system */
456#define STB_HIOS 12 /* specific semantics. */
984263bc 457#define STB_LOPROC 13 /* reserved range for processor */
139b8f34 458#define STB_HIPROC 15 /* specific semantics. */
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459
460/* Symbol type - ELFNN_ST_TYPE - st_info */
461#define STT_NOTYPE 0 /* Unspecified type. */
462#define STT_OBJECT 1 /* Data object. */
463#define STT_FUNC 2 /* Function. */
464#define STT_SECTION 3 /* Section. */
465#define STT_FILE 4 /* Source file. */
139b8f34 466#define STT_COMMON 5 /* Uninitialized common block. */
ca339402 467#define STT_TLS 6 /* TLS object. */
fcf53d9b 468#define STT_NUM 7
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469#define STT_LOOS 10 /* Reserved range for operating system */
470#define STT_HIOS 12 /* specific semantics. */
984263bc 471#define STT_LOPROC 13 /* reserved range for processor */
139b8f34 472#define STT_HIPROC 15 /* specific semantics. */
984263bc 473
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474/* Symbol visibility - ELFNN_ST_VISIBILITY - st_other */
475#define STV_DEFAULT 0x0 /* Default visibility (see binding). */
476#define STV_INTERNAL 0x1 /* Special meaning in relocatable objects. */
477#define STV_HIDDEN 0x2 /* Not visible. */
478#define STV_PROTECTED 0x3 /* Visible but not preemptible. */
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479#define STV_EXPORTED 0x4
480#define STV_SINGLETON 0x5
481#define STV_ELIMINATE 0x6
482
483/* Special symbol table indexes. */
484#define STN_UNDEF 0 /* Undefined symbol index. */
485
486/* Symbol versioning flags. */
487#define VER_DEF_CURRENT 1
488#define VER_DEF_IDX(x) VER_NDX(x)
489
490#define VER_FLG_BASE 0x01
491#define VER_FLG_WEAK 0x02
492
493#define VER_NEED_CURRENT 1
494#define VER_NEED_WEAK (1u << 15)
495#define VER_NEED_HIDDEN VER_NDX_HIDDEN
496#define VER_NEED_IDX(x) VER_NDX(x)
497
498#define VER_NDX_LOCAL 0
499#define VER_NDX_GLOBAL 1
500#define VER_NDX_GIVEN 2
501
502#define VER_NDX_HIDDEN (1u << 15)
503#define VER_NDX(x) ((x) & ~(1u << 15))
9618074e 504
984263bc 505#endif /* !_SYS_ELF_COMMON_H_ */