libc/include/elf.h

/*
 * Copyright (C) 2008 The Android Open Source Project
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _ELF_H
#define _ELF_H

#include <sys/cdefs.h>

#include <bits/auxvec.h>
#include <bits/elf_arm.h>
#include <bits/elf_arm64.h>
#include <bits/elf_mips.h>
#include <bits/elf_x86.h>
#include <bits/elf_x86_64.h>
#include <linux/elf.h>
#include <linux/elf-em.h>

#define ELF32_R_INFO(sym, type) ((((Elf32_Word)sym) << 8) | ((type) & 0xff))
#define ELF64_R_INFO(sym, type) ((((Elf64_Xword)sym) << 32) | ((type) & 0xffffffff))

typedef __s64 Elf32_Sxword;

typedef struct {
  __u32 a_type;
  union {
    __u32 a_val;
  } a_un;
} Elf32_auxv_t;

typedef struct {
  __u64 a_type;
  union {
    __u64 a_val;
  } a_un;
} Elf64_auxv_t;

typedef Elf32_Half Elf32_Versym;
typedef Elf64_Half Elf64_Versym;

typedef struct {
  Elf32_Half vd_version;
  Elf32_Half vd_flags;
  Elf32_Half vd_ndx;
  Elf32_Half vd_cnt;
  Elf32_Word vd_hash;
  Elf32_Word vd_aux;
  Elf32_Word vd_next;
} Elf32_Verdef;

typedef struct {
  Elf32_Word vda_name;
  Elf32_Word vda_next;
} Elf32_Verdaux;

typedef struct {
  Elf64_Half vd_version;
  Elf64_Half vd_flags;
  Elf64_Half vd_ndx;
  Elf64_Half vd_cnt;
  Elf64_Word vd_hash;
  Elf64_Word vd_aux;
  Elf64_Word vd_next;
} Elf64_Verdef;

typedef struct {
  Elf64_Word vda_name;
  Elf64_Word vda_next;
} Elf64_Verdaux;

typedef struct {
  Elf32_Half vn_version;
  Elf32_Half vn_cnt;
  Elf32_Word vn_file;
  Elf32_Word vn_aux;
  Elf32_Word vn_next;
} Elf32_Verneed;

typedef struct {
  Elf32_Word vna_hash;
  Elf32_Half vna_flags;
  Elf32_Half vna_other;
  Elf32_Word vna_name;
  Elf32_Word vna_next;
} Elf32_Vernaux;

typedef struct {
  Elf64_Half vn_version;
  Elf64_Half vn_cnt;
  Elf64_Word vn_file;
  Elf64_Word vn_aux;
  Elf64_Word vn_next;
} Elf64_Verneed;

typedef struct {
  Elf64_Word vna_hash;
  Elf64_Half vna_flags;
  Elf64_Half vna_other;
  Elf64_Word vna_name;
  Elf64_Word vna_next;
} Elf64_Vernaux;

#define DF_ORIGIN     0x00000001
#define DF_SYMBOLIC   0x00000002
#define DF_TEXTREL    0x00000004
#define DF_BIND_NOW   0x00000008
#define DF_STATIC_TLS 0x00000010

#define DF_1_NOW        0x00000001 /* Perform complete relocation processing. */
#define DF_1_GLOBAL     0x00000002 /* implies RTLD_GLOBAL */
#define DF_1_GROUP      0x00000004
#define DF_1_NODELETE   0x00000008 /* implies RTLD_NODELETE */
#define DF_1_LOADFLTR   0x00000010
#define DF_1_INITFIRST  0x00000020
#define DF_1_NOOPEN     0x00000040 /* Object can not be used with dlopen(3) */
#define DF_1_ORIGIN     0x00000080
#define DF_1_DIRECT     0x00000100
#define DF_1_TRANS      0x00000200
#define DF_1_INTERPOSE  0x00000400
#define DF_1_NODEFLIB   0x00000800
#define DF_1_NODUMP     0x00001000 /* Object cannot be dumped with dldump(3) */
#define DF_1_CONFALT    0x00002000
#define DF_1_ENDFILTEE  0x00004000
#define DF_1_DISPRELDNE 0x00008000
#define DF_1_DISPRELPND 0x00010000
#define DF_1_NODIRECT   0x00020000
#define DF_1_IGNMULDEF  0x00040000 /* Internal use */
#define DF_1_NOKSYMS    0x00080000 /* Internal use */
#define DF_1_NOHDR      0x00100000 /* Internal use */
#define DF_1_EDITED     0x00200000
#define DF_1_NORELOC    0x00400000 /* Internal use */
#define DF_1_SYMINTPOSE 0x00800000
#define DF_1_GLOBAUDIT  0x01000000
#define DF_1_SINGLETON  0x02000000
#define DF_1_STUB       0x04000000
#define DF_1_PIE        0x08000000

#define DT_BIND_NOW 24
#define DT_INIT_ARRAY 25
#define DT_FINI_ARRAY 26
#define DT_INIT_ARRAYSZ 27
#define DT_FINI_ARRAYSZ 28
#define DT_RUNPATH 29
#define DT_FLAGS 30
/* glibc and BSD disagree for DT_ENCODING; glibc looks wrong. */
#define DT_PREINIT_ARRAY 32
#define DT_PREINIT_ARRAYSZ 33

/* Android compressed rel/rela sections */
#define DT_ANDROID_REL (DT_LOOS + 2)
#define DT_ANDROID_RELSZ (DT_LOOS + 3)

#define DT_ANDROID_RELA (DT_LOOS + 4)
#define DT_ANDROID_RELASZ (DT_LOOS + 5)

/* gnu hash entry */
#define DT_GNU_HASH 0x6ffffef5

#define ELFOSABI_SYSV 0 /* Synonym for ELFOSABI_NONE used by valgrind. */

#define PT_GNU_RELRO 0x6474e552

#undef ELF_ST_TYPE
#define ELF_ST_TYPE(x) ((x) & 0xf)
#define ELF_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf))
#define ELF32_ST_INFO(b,t) ELF_ST_INFO(b,t)
#define ELF64_ST_INFO(b,t) ELF_ST_INFO(b,t)

#define STB_LOOS      10
#define STB_HIOS      12
#define STB_LOPROC    13
#define STB_HIPROC    15

#define SHT_LOOS    0x60000000
#define SHT_HIOS    0x6fffffff

#define STN_UNDEF     0

#define STT_GNU_IFUNC 10
#define STT_LOOS      10
#define STT_HIOS      12
#define STT_LOPROC    13
#define STT_HIPROC    15

#define STV_DEFAULT   0
#define STV_INTERNAL  1
#define STV_HIDDEN    2
#define STV_PROTECTED 3

/* The kernel uses NT_PRFPREG but glibc also offers NT_FPREGSET */
#define NT_FPREGSET NT_PRFPREG

#define ELF_NOTE_GNU "GNU"

#define NT_GNU_BUILD_ID 3

#define VER_FLG_BASE 0x1
#define VER_FLG_WEAK 0x2

#define VER_NDX_LOCAL  0
#define VER_NDX_GLOBAL 1

#endif /* _ELF_H */