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252b5132 1/* ELF support for BFD.
348a3483 2 Copyright (C) 1991,92,93,94,95,96,97,98,1999 Free Software Foundation, Inc.
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3
4 Written by Fred Fish @ Cygnus Support, from information published
5 in "UNIX System V Release 4, Programmers Guide: ANSI C and
6 Programming Support Tools".
7
8This file is part of BFD, the Binary File Descriptor library.
9
10This program is free software; you can redistribute it and/or modify
11it under the terms of the GNU General Public License as published by
12the Free Software Foundation; either version 2 of the License, or
13(at your option) any later version.
14
15This program is distributed in the hope that it will be useful,
16but WITHOUT ANY WARRANTY; without even the implied warranty of
17MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18GNU General Public License for more details.
19
20You should have received a copy of the GNU General Public License
21along with this program; if not, write to the Free Software
22Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
23
24
25/* This file is part of ELF support for BFD, and contains the portions
26 that are common to both the internal and external representations.
27 For example, ELFMAG0 is the byte 0x7F in both the internal (in-memory)
28 and external (in-file) representations. */
29
30#ifndef _ELF_COMMON_H
31#define _ELF_COMMON_H
32
33/* Fields in e_ident[] */
34
35#define EI_MAG0 0 /* File identification byte 0 index */
36#define ELFMAG0 0x7F /* Magic number byte 0 */
37
38#define EI_MAG1 1 /* File identification byte 1 index */
39#define ELFMAG1 'E' /* Magic number byte 1 */
40
41#define EI_MAG2 2 /* File identification byte 2 index */
42#define ELFMAG2 'L' /* Magic number byte 2 */
43
44#define EI_MAG3 3 /* File identification byte 3 index */
45#define ELFMAG3 'F' /* Magic number byte 3 */
46
47#define EI_CLASS 4 /* File class */
48#define ELFCLASSNONE 0 /* Invalid class */
49#define ELFCLASS32 1 /* 32-bit objects */
50#define ELFCLASS64 2 /* 64-bit objects */
51
52#define EI_DATA 5 /* Data encoding */
53#define ELFDATANONE 0 /* Invalid data encoding */
54#define ELFDATA2LSB 1 /* 2's complement, little endian */
55#define ELFDATA2MSB 2 /* 2's complement, big endian */
56
57#define EI_VERSION 6 /* File version */
58
59#define EI_OSABI 7 /* Operating System/ABI indication */
60#define ELFOSABI_SYSV 0 /* UNIX System V ABI */
61#define ELFOSABI_HPUX 1 /* HP-UX operating system */
62#define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */
3d4920d7 63#define ELFOSABI_ARM 97 /* ARM */
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64
65#define EI_ABIVERSION 8 /* ABI version */
66
67#define EI_PAD 9 /* Start of padding bytes */
68
69
70/* Values for e_type, which identifies the object file type */
71
72#define ET_NONE 0 /* No file type */
73#define ET_REL 1 /* Relocatable file */
74#define ET_EXEC 2 /* Executable file */
75#define ET_DYN 3 /* Shared object file */
76#define ET_CORE 4 /* Core file */
77#define ET_LOOS 0xFE00 /* Operating system-specific */
78#define ET_HIOS 0xFEFF /* Operating system-specific */
79#define ET_LOPROC 0xFF00 /* Processor-specific */
80#define ET_HIPROC 0xFFFF /* Processor-specific */
81
82/* Values for e_machine, which identifies the architecture */
83
84#define EM_NONE 0 /* No machine */
85#define EM_M32 1 /* AT&T WE 32100 */
86#define EM_SPARC 2 /* SUN SPARC */
87#define EM_386 3 /* Intel 80386 */
88#define EM_68K 4 /* Motorola m68k family */
89#define EM_88K 5 /* Motorola m88k family */
90#define EM_486 6 /* Intel 80486 */
91#define EM_860 7 /* Intel 80860 */
92#define EM_MIPS 8 /* MIPS R3000 (officially, big-endian only) */
93#define EM_S370 9 /* Amdahl */
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94#define EM_MIPS_RS4_BE 10 /* MIPS R4000 big-endian */ /* Depreciated */
95#define EM_MIPS_RS3_LE 10 /* MIPS R3000 little-endian (Oct 4 1999 Draft)*/ /* Depreciated */
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96
97#define EM_PARISC 15 /* HPPA */
0fc731e4 98
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99#define EM_VPP550 17 /* Fujitsu VPP500 */
100#define EM_SPARC32PLUS 18 /* Sun's "v8plus" */
101#define EM_960 19 /* Intel 80960 */
102#define EM_PPC 20 /* PowerPC */
348a3483 103#define EM_PPC64 21 /* 64-bit PowerPC */
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104
105#define EM_V800 36 /* NEC V800 series */
106#define EM_FR20 37 /* Fujitsu FR20 */
107#define EM_RH32 38 /* TRW RH32 */
108#define EM_MCORE 39 /* Motorolla MCore */ /* May also be taken by Fujitsu MMA */
0fc731e4 109#define EM_RCE 39 /* Old name for MCore */
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110#define EM_ARM 40 /* ARM */
111#define EM_OLD_ALPHA 41 /* Digital Alpha */
112#define EM_SH 42 /* Hitachi SH */
113#define EM_SPARCV9 43 /* SPARC v9 64-bit */
114#define EM_TRICORE 44 /* Siemens Tricore embedded processor */
115#define EM_ARC 45 /* Argonaut RISC Core, Argonaut Technologies Inc. */
116#define EM_H8_300 46 /* Hitachi H8/300 */
117#define EM_H8_300H 47 /* Hitachi H8/300H */
118#define EM_H8S 48 /* Hitachi H8S */
119#define EM_H8_500 49 /* Hitachi H8/500 */
120#define EM_IA_64 50 /* Intel MercedTM Processor */
121#define EM_MIPS_X 51 /* Stanford MIPS-X */
122#define EM_COLDFIRE 52 /* Motorola Coldfire */
123#define EM_68HC12 53 /* Motorola M68HC12 */
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124#define EM_MMA 54 /* Fujitsu Multimedia Accelerator */
125#define EM_PCP 55 /* Siemens PCP */
126#define EM_NCPU 56 /* Sony nCPU embedded RISC processor */
127#define EM_NDR1 57 /* Denso NDR1 microprocesspr */
128#define EM_STARCORE 58 /* Motorola Star*Core processor */
129#define EM_ME16 59 /* Toyota ME16 processor */
130#define EM_ST100 60 /* STMicroelectronics ST100 processor */
131#define EM_TINYJ 61 /* Advanced Logic Corp. TinyJ embedded processor */
132
133#define EM_FX66 66 /* Siemens FX66 microcontroller */
134#define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16 bit microcontroller */
135#define EM_ST7 68 /* STMicroelectronics ST7 8-bit microcontroller */
136#define EM_68HC16 69 /* Motorola MC68HC16 Microcontroller */
137#define EM_68HC11 70 /* Motorola MC68HC11 Microcontroller */
138#define EM_68HC08 71 /* Motorola MC68HC08 Microcontroller */
139#define EM_68HC05 72 /* Motorola MC68HC05 Microcontroller */
140#define EM_SVX 73 /* Silicon Graphics SVx */
141#define EM_ST19 74 /* STMicroelectronics ST19 8-bit microcontroller */
142#define EM_VAX 75 /* Digital VAX */
252b5132 143
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144#define EM_PJ 99 /* picoJava */
145
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146/* If it is necessary to assign new unofficial EM_* values, please pick large
147 random numbers (0x8523, 0xa7f2, etc.) to minimize the chances of collision
148 with official or non-GNU unofficial values.
149
150 NOTE: Do not just increment the most recent number by one.
151 Somebody else somewhere will do exactly the same thing, and you
152 will have a collision. Instead, pick a random number. */
153
154/* Cygnus PowerPC ELF backend. Written in the absence of an ABI. */
155#define EM_CYGNUS_POWERPC 0x9025
156
157/* Old version of Sparc v9, from before the ABI; this should be
158 removed shortly. */
159#define EM_OLD_SPARCV9 11
160
161/* Old version of PowerPC, this should be removed shortly. */
162#define EM_PPC_OLD 17
163
164/* Cygnus ARC ELF backend. Written in the absence of an ABI. */
165#define EM_CYGNUS_ARC 0x9040
166
167/* Cygnus M32R ELF backend. Written in the absence of an ABI. */
168#define EM_CYGNUS_M32R 0x9041
169
170/* Alpha backend magic number. Written in the absence of an ABI. */
171#define EM_ALPHA 0x9026
172
173/* D10V backend magic number. Written in the absence of an ABI. */
174#define EM_CYGNUS_D10V 0x7650
175
176/* D30V backend magic number. Written in the absence of an ABI. */
177#define EM_CYGNUS_D30V 0x7676
178
179/* V850 backend magic number. Written in the absense of an ABI. */
180#define EM_CYGNUS_V850 0x9080
181
182/* mn10200 and mn10300 backend magic numbers.
183 Written in the absense of an ABI. */
184#define EM_CYGNUS_MN10200 0xdead
185#define EM_CYGNUS_MN10300 0xbeef
186
187/* FR30 magic number - no EABI available. */
188#define EM_CYGNUS_FR30 0x3330
189
190/* See the above comment before you add a new EM_* value here. */
191
192/* Values for e_version */
193
194#define EV_NONE 0 /* Invalid ELF version */
195#define EV_CURRENT 1 /* Current version */
196
197/* Values for program header, p_type field */
198
199#define PT_NULL 0 /* Program header table entry unused */
200#define PT_LOAD 1 /* Loadable program segment */
201#define PT_DYNAMIC 2 /* Dynamic linking information */
202#define PT_INTERP 3 /* Program interpreter */
203#define PT_NOTE 4 /* Auxiliary information */
204#define PT_SHLIB 5 /* Reserved, unspecified semantics */
205#define PT_PHDR 6 /* Entry for header table itself */
206#define PT_LOOS 0x60000000 /* OS-specific */
207#define PT_HIOS 0x6fffffff /* OS-specific */
208#define PT_LOPROC 0x70000000 /* Processor-specific */
209#define PT_HIPROC 0x7FFFFFFF /* Processor-specific */
210
211/* Program segment permissions, in program header p_flags field */
212
213#define PF_X (1 << 0) /* Segment is executable */
214#define PF_W (1 << 1) /* Segment is writable */
215#define PF_R (1 << 2) /* Segment is readable */
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216/* #define PF_MASKOS 0x0F000000 *//* OS-specific reserved bits */
217#define PF_MASKOS 0x0FF00000 /* New value, Oct 4, 1999 Draft */
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218#define PF_MASKPROC 0xF0000000 /* Processor-specific reserved bits */
219
220/* Values for section header, sh_type field */
221
222#define SHT_NULL 0 /* Section header table entry unused */
223#define SHT_PROGBITS 1 /* Program specific (private) data */
224#define SHT_SYMTAB 2 /* Link editing symbol table */
225#define SHT_STRTAB 3 /* A string table */
226#define SHT_RELA 4 /* Relocation entries with addends */
227#define SHT_HASH 5 /* A symbol hash table */
228#define SHT_DYNAMIC 6 /* Information for dynamic linking */
229#define SHT_NOTE 7 /* Information that marks file */
230#define SHT_NOBITS 8 /* Section occupies no space in file */
231#define SHT_REL 9 /* Relocation entries, no addends */
232#define SHT_SHLIB 10 /* Reserved, unspecified semantics */
233#define SHT_DYNSYM 11 /* Dynamic linking symbol table */
234
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235#define SHT_INIT_ARRAY 14 /* Array of pointers to init functions */
236#define SHT_FINI_ARRAY 15 /* Array of pointers to finish functions */
237#define SHT_PREINIT_ARRAY 16 /* Array of pointers to pre-init functions */
238
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239#define SHT_LOOS 0x60000000 /* Operating system specific semantics, lo */
240#define SHT_HIOS 0x6fffffff /* Operating system specific semantics, hi */
241
242/* The next three section types are defined by Solaris, and are named
243 SHT_SUNW*. We use them in GNU code, so we also define SHT_GNU*
244 versions. */
245#define SHT_SUNW_verdef 0x6ffffffd /* Versions defined by file */
246#define SHT_SUNW_verneed 0x6ffffffe /* Versions needed by file */
247#define SHT_SUNW_versym 0x6fffffff /* Symbol versions */
248
249#define SHT_GNU_verdef SHT_SUNW_verdef
250#define SHT_GNU_verneed SHT_SUNW_verneed
251#define SHT_GNU_versym SHT_SUNW_versym
252
253#define SHT_LOPROC 0x70000000 /* Processor-specific semantics, lo */
254#define SHT_HIPROC 0x7FFFFFFF /* Processor-specific semantics, hi */
255#define SHT_LOUSER 0x80000000 /* Application-specific semantics */
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256/* #define SHT_HIUSER 0x8FFFFFFF *//* Application-specific semantics */
257#define SHT_HIUSER 0xFFFFFFFF /* New value, defined in Oct 4, 1999 Draft */
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258
259/* Values for section header, sh_flags field */
260
261#define SHF_WRITE (1 << 0) /* Writable data during execution */
262#define SHF_ALLOC (1 << 1) /* Occupies memory during execution */
263#define SHF_EXECINSTR (1 << 2) /* Executable machine instructions */
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264#define SHF_MERGE (1 << 4) /* Data in this section can be merged */
265#define SHF_STRINGS (1 << 5) /* Contains null terminated character strings */
266#define SHF_INFO_LINK (1 << 6) /* sh_info holds section header table index */
267#define SHF_LINK_ORDER (1 << 7) /* Preserve section ordering when linking */
268#define SHF_OS_NONCONFORMING (1 << 8) /* OS specifci processing required */
269
270/* #define SHF_MASKOS 0x0F000000 *//* OS-specific semantics */
271#define SHF_MASKOS 0x0FF00000 /* New value, Oct 4, 1999 Draft */
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272#define SHF_MASKPROC 0xF0000000 /* Processor-specific semantics */
273
274/* Values of note segment descriptor types for core files. */
275
276#define NT_PRSTATUS 1 /* Contains copy of prstatus struct */
277#define NT_FPREGSET 2 /* Contains copy of fpregset struct */
278#define NT_PRPSINFO 3 /* Contains copy of prpsinfo struct */
7e3c779a 279#define NT_TASKSTRUCT 4 /* Contains copy of task struct */
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280#define NT_PRXFPREG 0x46e62b7f /* Contains a user_xfpregs_struct; */
281 /* note name must be "LINUX". */
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282
283/* Note segments for core files on dir-style procfs systems. */
284
285#define NT_PSTATUS 10 /* Has a struct pstatus */
286#define NT_FPREGS 12 /* Has a struct fpregset */
287#define NT_PSINFO 13 /* Has a struct psinfo */
288#define NT_LWPSTATUS 16 /* Has a struct lwpstatus_t */
289#define NT_LWPSINFO 17 /* Has a struct lwpsinfo_t */
290
291/* Values of note segment descriptor types for object files. */
292/* (Only for hppa right now. Should this be moved elsewhere?) */
293
294#define NT_VERSION 1 /* Contains a version string. */
295
296/* These three macros disassemble and assemble a symbol table st_info field,
297 which contains the symbol binding and symbol type. The STB_ and STT_
298 defines identify the binding and type. */
299
300#define ELF_ST_BIND(val) (((unsigned int)(val)) >> 4)
301#define ELF_ST_TYPE(val) ((val) & 0xF)
302#define ELF_ST_INFO(bind,type) (((bind) << 4) + ((type) & 0xF))
303
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304/* The 64bit and 32bit versions of these macros are identical, but
305 the ELF spec defines them, so here they are. */
306#define ELF32_ST_BIND ELF_ST_BIND
307#define ELF32_ST_TYPE ELF_ST_TYPE
308#define ELF32_ST_INFO ELF_ST_INFO
309#define ELF64_ST_BIND ELF_ST_BIND
310#define ELF64_ST_TYPE ELF_ST_TYPE
311#define ELF64_ST_INFO ELF_ST_INFO
312
313/* These two macros disassemble and assemble a symbol's visibility into
314 the st_other field. The STV_ defines specificy the actual visibility. */
315
316#define ELF_ST_VISIBILITY(v) ((v) & 0x3)
317#define ELF_ST_OTHER(o) ((o) & ~0x3)
318
319#define ELF32_ST_VISIBILITY ELF_ST_VISIBILITY
320#define ELF32_ST_OTHER ELF_ST_OTHER
321#define ELF64_ST_VISIBILITY ELF_ST_VISIBILITY
322#define ELF64_ST_OTHER ELF_ST_OTHER
323
324
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325#define STN_UNDEF 0 /* undefined symbol index */
326
327#define STB_LOCAL 0 /* Symbol not visible outside obj */
328#define STB_GLOBAL 1 /* Symbol visible outside obj */
329#define STB_WEAK 2 /* Like globals, lower precedence */
330#define STB_LOOS 10 /* OS-specific semantics */
331#define STB_HIOS 12 /* OS-specific semantics */
332#define STB_LOPROC 13 /* Application-specific semantics */
333#define STB_HIPROC 15 /* Application-specific semantics */
334
335#define STT_NOTYPE 0 /* Symbol type is unspecified */
336#define STT_OBJECT 1 /* Symbol is a data object */
337#define STT_FUNC 2 /* Symbol is a code object */
338#define STT_SECTION 3 /* Symbol associated with a section */
339#define STT_FILE 4 /* Symbol gives a file name */
0fc731e4 340#define STT_COMMON 5 /* An uninitialised common block */
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341#define STT_LOOS 10 /* OS-specific semantics */
342#define STT_HIOS 12 /* OS-specific semantics */
343#define STT_LOPROC 13 /* Application-specific semantics */
344#define STT_HIPROC 15 /* Application-specific semantics */
345
346/* Special section indices, which may show up in st_shndx fields, among
347 other places. */
348
349#define SHN_UNDEF 0 /* Undefined section reference */
350#define SHN_LORESERVE 0xFF00 /* Begin range of reserved indices */
351#define SHN_LOPROC 0xFF00 /* Begin range of appl-specific */
352#define SHN_HIPROC 0xFF1F /* End range of appl-specific */
353#define SHN_LOOS 0xFF20 /* OS specific semantics, lo */
354#define SHN_HIOS 0xFF3F /* OS specific semantics, hi */
355#define SHN_ABS 0xFFF1 /* Associated symbol is absolute */
356#define SHN_COMMON 0xFFF2 /* Associated symbol is in common */
357#define SHN_HIRESERVE 0xFFFF /* End range of reserved indices */
358
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359/* The following constants control how a symbol may be accessed once it has
360 become part of an executable or shared library. */
361
362#define STV_DEFAULT 0 /* Visibility is specified by binding type */
363#define STV_INTERNAL 1 /* OS specific version of STV_HIDDEN */
364#define STV_HIDDEN 2 /* Can only be seen inside currect component */
365#define STV_PROTECTED 3 /* Treat as STB_LOCAL inside current component */
366
367
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368/* relocation info handling macros */
369
370#define ELF32_R_SYM(i) ((i) >> 8)
371#define ELF32_R_TYPE(i) ((i) & 0xff)
372#define ELF32_R_INFO(s,t) (((s) << 8) + ((t) & 0xff))
373
374#define ELF64_R_SYM(i) ((i) >> 32)
375#define ELF64_R_TYPE(i) ((i) & 0xffffffff)
376#define ELF64_R_INFO(s,t) (((bfd_vma) (s) << 32) + (bfd_vma) (t))
377
378/* Dynamic section tags */
379
380#define DT_NULL 0
381#define DT_NEEDED 1
382#define DT_PLTRELSZ 2
383#define DT_PLTGOT 3
384#define DT_HASH 4
385#define DT_STRTAB 5
386#define DT_SYMTAB 6
387#define DT_RELA 7
388#define DT_RELASZ 8
389#define DT_RELAENT 9
390#define DT_STRSZ 10
391#define DT_SYMENT 11
392#define DT_INIT 12
393#define DT_FINI 13
394#define DT_SONAME 14
395#define DT_RPATH 15
396#define DT_SYMBOLIC 16
397#define DT_REL 17
398#define DT_RELSZ 18
399#define DT_RELENT 19
400#define DT_PLTREL 20
401#define DT_DEBUG 21
402#define DT_TEXTREL 22
403#define DT_JMPREL 23
404#define DT_BIND_NOW 24
405#define DT_INIT_ARRAY 25
406#define DT_FINI_ARRAY 26
407#define DT_INIT_ARRAYSZ 27
408#define DT_FINI_ARRAYSZ 28
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409#define DT_RUNPATH 29
410#define DT_FLAGS 30
411#define DT_ENCODING 31 /* Note: Oct 4, 1999 Draft specifies this as 32, but this conflicts with DT_PREINIT_ARRAY */
412#define DT_PREINIT_ARRAY 32
413#define DT_PREINIT_ARRAYSZ 33
252b5132 414
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415#define DT_LOOS 0x60000000 /* Note: Oct 4, 1999 draft has this as 0x6fff000d */
416#define DT_HIOS 0x6fffffff /* Note: Oct 4, 1999 draft has this as 0x6fff0000 */
417#define DT_LOPROC 0x70000000
418#define DT_HIPROC 0x7fffffff
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419
420/* The next four dynamic tags are used on Solaris. We support them
421 everywhere. */
422#define DT_VALRNGLO 0x6ffffd00
423#define DT_PLTPADSZ 0x6ffffdf9
424#define DT_MOVEENT 0x6ffffdfa
425#define DT_MOVESZ 0x6ffffdfb
426#define DT_FEATURE_1 0x6ffffdfc
427#define DT_POSFLAG_1 0x6ffffdfd
428#define DT_SYMINSZ 0x6ffffdfe
429#define DT_SYMINENT 0x6ffffdff
430#define DT_VALRNGHI 0x6ffffdff
431
432#define DT_ADDRRNGLO 0x6ffffe00
433#define DT_SYMINFO 0x6ffffeff
434#define DT_ADDRRNGHI 0x6ffffeff
435
436#define DT_RELACOUNT 0x6ffffff9
437#define DT_RELCOUNT 0x6ffffffa
438#define DT_FLAGS_1 0x6ffffffb
439#define DT_VERDEF 0x6ffffffc
440#define DT_VERDEFNUM 0x6ffffffd
441#define DT_VERNEED 0x6ffffffe
442#define DT_VERNEEDNUM 0x6fffffff
443
444/* This tag is a GNU extension to the Solaris version scheme. */
445#define DT_VERSYM 0x6ffffff0
446
447#define DT_LOPROC 0x70000000
448#define DT_HIPROC 0x7fffffff
449
450/* These section tags are used on Solaris. We support them
451 everywhere, and hope they do not conflict. */
452
453#define DT_AUXILIARY 0x7ffffffd
454#define DT_USED 0x7ffffffe
455#define DT_FILTER 0x7fffffff
456
457/* Values used in DT_FEATURE_1 .dynamic entry. */
458#define DTF_1_PARINIT 0x00000001
459
460/* Flag values used in the DT_POSFLAG_1 .dynamic entry. */
461#define DF_P1_LAZYLOAD 0x00000001
462#define DF_P1_GROUPPERM 0x00000002
463
464/* Flag value in in the DT_1_FLAGS .dynamic entry. */
465#define DF_1_NOW 0x00000001
466#define DF_1_GLOBAL 0x00000002
467#define DF_1_GROUP 0x00000004
468#define DF_1_NODELETE 0x00000008
469#define DF_1_LOADFLTR 0x00000010
470#define DF_1_INITFIRST 0x00000020
471#define DF_1_NOOPEN 0x00000040
472#define DF_1_ORIGIN 0x00000080
473#define DF_1_DIRECT 0x00000100
474#define DF_1_TRANS 0x00000200
475#define DF_1_INTERPOSE 0x00000400
476
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477/* Flag values for the DT_FLAGS entry. */
478#define DF_ORIGIN (1 << 0)
479#define DF_SYMBOLIC (1 << 1)
480#define DF_TEXTREL (1 << 2)
481#define DF_BIND_NOW (1 << 3)
482
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483/* These constants are used for the version number of a Elf32_Verdef
484 structure. */
485
486#define VER_DEF_NONE 0
487#define VER_DEF_CURRENT 1
488
489/* These constants appear in the vd_flags field of a Elf32_Verdef
490 structure. */
491
492#define VER_FLG_BASE 0x1
493#define VER_FLG_WEAK 0x2
494
495/* These special constants can be found in an Elf32_Versym field. */
496
497#define VER_NDX_LOCAL 0
498#define VER_NDX_GLOBAL 1
499
500/* These constants are used for the version number of a Elf32_Verneed
501 structure. */
502
503#define VER_NEED_NONE 0
504#define VER_NEED_CURRENT 1
505
506/* This flag appears in a Versym structure. It means that the symbol
507 is hidden, and is only visible with an explicit version number.
508 This is a GNU extension. */
509
510#define VERSYM_HIDDEN 0x8000
511
512/* This is the mask for the rest of the Versym information. */
513
514#define VERSYM_VERSION 0x7fff
515
516/* This is a special token which appears as part of a symbol name. It
517 indictes that the rest of the name is actually the name of a
518 version node, and is not part of the actual name. This is a GNU
519 extension. For example, the symbol name `stat@ver2' is taken to
520 mean the symbol `stat' in version `ver2'. */
521
522#define ELF_VER_CHR '@'
523
524/* Possible values for si_boundto. */
525#define SYMINFO_BT_SELF 0xffff /* Symbol bound to self */
526#define SYMINFO_BT_PARENT 0xfffe /* Symbol bound to parent */
527#define SYMINFO_BT_LOWRESERVE 0xff00 /* Beginning of reserved entries */
528
529/* Possible bitmasks for si_flags. */
530#define SYMINFO_FLG_DIRECT 0x0001 /* Direct bound symbol */
531#define SYMINFO_FLG_PASSTHRU 0x0002 /* Pass-thru symbol for translator */
532#define SYMINFO_FLG_COPY 0x0004 /* Symbol is a copy-reloc */
533#define SYMINFO_FLG_LAZYLOAD 0x0008 /* Symbol bound to object to be lazy
534 loaded */
535/* Syminfo version values. */
536#define SYMINFO_NONE 0
537#define SYMINFO_CURRENT 1
538#define SYMINFO_NUM 2
539
540#endif /* _ELF_COMMON_H */