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haiku/headers/private/system/elf32.h

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/*
* Copyright 2001, Travis Geiselbrecht. All rights reserved.
* Distributed under the terms of the NewOS License.
*
* Copyright 2002-2011, Haiku Inc. All Rights Reserved.
* Distributed under the terms of the MIT license.
*/
#ifndef _ELF32_H
#define _ELF32_H
#include <SupportDefs.h>
#include <ByteOrder.h>
#include <arch_elf.h>
typedef uint32 Elf32_Addr;
typedef uint16 Elf32_Half;
typedef uint32 Elf32_Off;
typedef int32 Elf32_Sword;
typedef uint32 Elf32_Word;
typedef Elf32_Half Elf32_Versym;
/*** ELF header ***/
#define EI_NIDENT 16
struct Elf32_Ehdr {
uint8 e_ident[EI_NIDENT];
Elf32_Half e_type;
Elf32_Half e_machine;
Elf32_Word e_version;
Elf32_Addr e_entry;
Elf32_Off e_phoff;
Elf32_Off e_shoff;
Elf32_Word e_flags;
Elf32_Half e_ehsize;
Elf32_Half e_phentsize;
Elf32_Half e_phnum;
Elf32_Half e_shentsize;
Elf32_Half e_shnum;
Elf32_Half e_shstrndx;
#ifdef __cplusplus
bool IsHostEndian() const;
#endif
};
#define ELF_MAGIC "\x7f""ELF"
// e_ident[] indices
#define EI_MAG0 0
#define EI_MAG1 1
#define EI_MAG2 2
#define EI_MAG3 3
#define EI_CLASS 4
#define EI_DATA 5
#define EI_VERSION 6
#define EI_PAD 7
// e_machine (Architecture)
#define EM_NONE 0 // No machine
#define EM_M32 1 // AT&T WE 32100
#define EM_SPARC 2 // Sparc
#define EM_386 3 // Intel 80386
#define EM_68K 4 // Motorola m68k family
#define EM_88K 5 // Motorola m88k family
#define EM_486 6 // Intel 80486, Reserved for future use
#define EM_860 7 // Intel 80860
#define EM_MIPS 8 // MIPS R3000 (officially, big-endian only)
#define EM_S370 9 // IBM System/370
#define EM_MIPS_RS3_LE 10 // MIPS R3000 little-endian, Deprecated
#define EM_PARISC 15 // HPPA
#define EM_VPP550 17 // Fujitsu VPP500
#define EM_SPARC32PLUS 18 // Sun "v8plus"
#define EM_960 19 // Intel 80960
#define EM_PPC 20 // PowerPC
#define EM_PPC64 21 // 64-bit PowerPC
#define EM_S390 22 // IBM S/390
#define EM_V800 36 // NEC V800 series
#define EM_FR20 37 // Fujitsu FR20
#define EM_RH32 38 // TRW RH32
#define EM_MCORE 39 // Motorola M*Core
#define EM_RCE 39 // Old name for MCore
#define EM_ARM 40 // ARM
#define EM_OLD_ALPHA 41 // Digital Alpha
#define EM_SH 42 // Renesas / SuperH SH
#define EM_SPARCV9 43 // SPARC v9 64-bit
#define EM_TRICORE 44 // Siemens Tricore embedded processor
#define EM_ARC 45 // ARC Cores
#define EM_H8_300 46 // Renesas H8/300
#define EM_H8_300H 47 // Renesas H8/300H
#define EM_H8S 48 // Renesas H8S
#define EM_H8_500 49 // Renesas H8/500
#define EM_IA_64 50 // Intel IA-64 Processor
#define EM_MIPS_X 51 // Stanford MIPS-X
#define EM_COLDFIRE 52 // Motorola Coldfire
#define EM_68HC12 53 // Motorola M68HC12
#define EM_MMA 54 // Fujitsu Multimedia Accelerator
#define EM_PCP 55 // Siemens PCP
#define EM_NCPU 56 // Sony nCPU embedded RISC processor
#define EM_NDR1 57 // Denso NDR1 microprocesspr
#define EM_STARCORE 58 // Motorola Star*Core processor
#define EM_ME16 59 // Toyota ME16 processor
#define EM_ST100 60 // STMicroelectronics ST100 processor
#define EM_TINYJ 61 // Advanced Logic Corp. TinyJ embedded processor
#define EM_X86_64 62 // Advanced Micro Devices X86-64 processor
// architecture class (EI_CLASS)
#define ELFCLASS32 1
#define ELFCLASS64 2
// endian (EI_DATA)
#define ELFDATA2LSB 1 /* little endian */
#define ELFDATA2MSB 2 /* big endian */
/*** section header ***/
struct Elf32_Shdr {
Elf32_Word sh_name;
Elf32_Word sh_type;
Elf32_Word sh_flags;
Elf32_Addr sh_addr;
Elf32_Off sh_offset;
Elf32_Word sh_size;
Elf32_Word sh_link;
Elf32_Word sh_info;
Elf32_Word sh_addralign;
Elf32_Word sh_entsize;
};
// special section indices
#define SHN_UNDEF 0
#define SHN_LORESERVE 0xff00
#define SHN_LOPROC 0xff00
#define SHN_HIPROC 0xff1f
#define SHN_ABS 0xfff1
#define SHN_COMMON 0xfff2
#define SHN_HIRESERVE 0xffff
// section header type
#define SHT_NULL 0
#define SHT_PROGBITS 1
#define SHT_SYMTAB 2
#define SHT_STRTAB 3
#define SHT_RELA 4
#define SHT_HASH 5
#define SHT_DYNAMIC 6
#define SHT_NOTE 7
#define SHT_NOBITS 8
#define SHT_REL 9
#define SHT_SHLIB 10
#define SHT_DYNSYM 11
#define SHT_GNU_verdef 0x6ffffffd /* version definition section */
#define SHT_GNU_verneed 0x6ffffffe /* version needs section */
#define SHT_GNU_versym 0x6fffffff /* version symbol table */
#define SHT_LOPROC 0x70000000
#define SHT_HIPROC 0x7fffffff
#define SHT_LOUSER 0x80000000
#define SHT_HIUSER 0xffffffff
// section header flags
#define SHF_WRITE 1
#define SHF_ALLOC 2
#define SHF_EXECINSTR 4
#define SHF_MASKPROC 0xf0000000
/*** program header ***/
struct Elf32_Phdr {
Elf32_Word p_type;
Elf32_Off p_offset; /* offset from the beginning of the file of the segment */
Elf32_Addr p_vaddr; /* virtual address for the segment in memory */
Elf32_Addr p_paddr;
Elf32_Word p_filesz; /* the size of the segment in the file */
Elf32_Word p_memsz; /* the size of the segment in memory */
Elf32_Word p_flags;
Elf32_Word p_align;
#ifdef __cplusplus
bool IsReadWrite() const;
bool IsExecutable() const;
#endif
};
// program header segment types
#define PT_NULL 0
#define PT_LOAD 1
#define PT_DYNAMIC 2
#define PT_INTERP 3
#define PT_NOTE 4
#define PT_SHLIB 5
#define PT_PHDR 6
#define PT_STACK 0x6474e551
#define PT_LOPROC 0x70000000
#define PT_HIPROC 0x7fffffff
// program header segment flags
#define PF_EXECUTE 0x1
#define PF_WRITE 0x2
#define PF_READ 0x4
#define PF_PROTECTION_MASK (PF_EXECUTE | PF_WRITE | PF_READ)
#define PF_MASKPROC 0xf0000000
struct Elf32_Sym {
Elf32_Word st_name;
Elf32_Addr st_value;
Elf32_Word st_size;
uint8 st_info;
uint8 st_other;
Elf32_Half st_shndx;
#ifdef __cplusplus
uint8 Bind() const;
uint8 Type() const;
#endif
};
#define ELF32_ST_BIND(i) ((i) >> 4)
#define ELF32_ST_TYPE(i) ((i) & 0xf)
#define ELF32_ST_INFO(b, t) (((b) << 4) + ((t) & 0xf))
#define STT_NOTYPE 0
#define STT_OBJECT 1
#define STT_FUNC 2
#define STT_SECTION 3
#define STT_FILE 4
#define STT_LOPROC 13
#define STT_HIPROC 15
#define STB_LOCAL 0
#define STB_GLOBAL 1
#define STB_WEAK 2
#define STB_LOPROC 13
#define STB_HIPROC 15
#define STN_UNDEF 0
struct Elf32_Rel {
Elf32_Addr r_offset;
Elf32_Word r_info;
#ifdef __cplusplus
uint8 SymbolIndex() const;
uint8 Type() const;
#endif
};
#ifdef __cplusplus
struct Elf32_Rela : public Elf32_Rel {
#else
struct Elf32_Rela {
Elf32_Addr r_offset;
Elf32_Word r_info;
#endif
Elf32_Sword r_addend;
};
#define ELF32_R_SYM(i) ((i) >> 8)
#define ELF32_R_TYPE(i) ((unsigned char)(i))
#define ELF32_R_INFO(s, t) (((s) << 8) + (unsigned char)(t))
struct Elf32_Dyn {
Elf32_Sword d_tag;
union {
Elf32_Word d_val;
Elf32_Addr d_ptr;
} d_un;
};
#define DT_NULL 0
#define DT_NEEDED 1
#define DT_PLTRELSZ 2
#define DT_PLTGOT 3
#define DT_HASH 4
#define DT_STRTAB 5
#define DT_SYMTAB 6
#define DT_RELA 7
#define DT_RELASZ 8
#define DT_RELAENT 9
#define DT_STRSZ 10
#define DT_SYMENT 11
#define DT_INIT 12
#define DT_FINI 13
#define DT_SONAME 14
#define DT_RPATH 15
#define DT_SYMBOLIC 16
#define DT_REL 17
#define DT_RELSZ 18
#define DT_RELENT 19
#define DT_PLTREL 20
#define DT_DEBUG 21
#define DT_TEXTREL 22
#define DT_JMPREL 23
#define DT_BIND_NOW 24 /* no lazy binding */
#define DT_INIT_ARRAY 25 /* init function array */
#define DT_FINI_ARRAY 26 /* termination function array */
#define DT_INIT_ARRAYSZ 27 /* init function array size */
#define DT_FINI_ARRAYSZ 28 /* termination function array size */
#define DT_RUNPATH 29 /* library search path (supersedes DT_RPATH) */
#define DT_FLAGS 30 /* flags (see below) */
#define DT_ENCODING 32
#define DT_PREINIT_ARRAY 32 /* preinitialization array */
#define DT_PREINIT_ARRAYSZ 33 /* preinitialization array size */
#define DT_VERSYM 0x6ffffff0 /* symbol version table */
#define DT_VERDEF 0x6ffffffc /* version definition table */
#define DT_VERDEFNUM 0x6ffffffd /* number of version definitions */
#define DT_VERNEED 0x6ffffffe /* table with needed versions */
#define DT_VERNEEDNUM 0x6fffffff /* number of needed versions */
#define DT_LOPROC 0x70000000
#define DT_HIPROC 0x7fffffff
/* DT_FLAGS values */
#define DF_ORIGIN 0x01
#define DF_SYMBOLIC 0x02
#define DF_TEXTREL 0x04
#define DF_BIND_NOW 0x08
#define DF_STATIC_TLS 0x10
/* version definition section */
struct Elf32_Verdef {
Elf32_Half vd_version; /* version revision */
Elf32_Half vd_flags; /* version information flags */
Elf32_Half vd_ndx; /* version index as specified in the
symbol version table */
Elf32_Half vd_cnt; /* number of associated verdaux entries */
Elf32_Word vd_hash; /* version name hash value */
Elf32_Word vd_aux; /* byte offset to verdaux array */
Elf32_Word vd_next; /* byte offset to next verdef entry */
};
/* values for vd_version (version revision) */
#define VER_DEF_NONE 0 /* no version */
#define VER_DEF_CURRENT 1 /* current version */
#define VER_DEF_NUM 2 /* given version number */
/* values for vd_flags (version information flags) */
#define VER_FLG_BASE 0x1 /* version definition of file itself */
#define VER_FLG_WEAK 0x2 /* weak version identifier */
/* values for versym symbol index */
#define VER_NDX_LOCAL 0 /* symbol is local */
#define VER_NDX_GLOBAL 1 /* symbol is global/unversioned */
#define VER_NDX_INITIAL 2 /* initial version -- that's the one given
to symbols when a library becomes
versioned; handled by the linker (and
runtime loader) similar to
VER_NDX_GLOBAL */
#define VER_NDX_LORESERVE 0xff00 /* beginning of reserved entries */
#define VER_NDX_ELIMINATE 0xff01 /* symbol is to be eliminated */
#define VER_NDX_FLAG_HIDDEN 0x8000 /* flag: version is hidden */
#define VER_NDX_MASK 0x7fff /* mask to get the actual version index */
#define VER_NDX(x) ((x) & VER_NDX_MASK)
/* auxiliary version information */
struct Elf32_Verdaux {
Elf32_Word vda_name; /* string table offset to version or dependency
name */
Elf32_Word vda_next; /* byte offset to next verdaux entry */
};
/* version dependency section */
struct Elf32_Verneed {
Elf32_Half vn_version; /* version of structure */
Elf32_Half vn_cnt; /* number of associated vernaux entries */
Elf32_Word vn_file; /* byte offset to file name for this
dependency */
Elf32_Word vn_aux; /* byte offset to vernaux array */
Elf32_Word vn_next; /* byte offset to next verneed entry */
};
/* values for vn_version (version revision) */
#define VER_NEED_NONE 0 /* no version */
#define VER_NEED_CURRENT 1 /* current version */
#define VER_NEED_NUM 2 /* given version number */
/* auxiliary needed version information */
struct Elf32_Vernaux {
Elf32_Word vna_hash; /* dependency name hash value */
Elf32_Half vna_flags; /* dependency specific information flags */
Elf32_Half vna_other; /* version index as specified in the symbol
version table */
Elf32_Word vna_name; /* string table offset to dependency name */
Elf32_Word vna_next; /* byte offset to next vernaux entry */
};
/* values for vna_flags */
#define VER_FLG_WEAK 0x2 /* weak version identifier */
/*** inline functions ***/
#ifdef __cplusplus
inline bool
Elf32_Ehdr::IsHostEndian() const
{
#if B_HOST_IS_LENDIAN
return e_ident[EI_DATA] == ELFDATA2LSB;
#elif B_HOST_IS_BENDIAN
return e_ident[EI_DATA] == ELFDATA2MSB;
#endif
}
inline bool
Elf32_Phdr::IsReadWrite() const
{
return !(~p_flags & (PF_READ | PF_WRITE));
}
inline bool
Elf32_Phdr::IsExecutable() const
{
return (p_flags & PF_EXECUTE) != 0;
}
inline uint8
Elf32_Sym::Bind() const
{
return ELF32_ST_BIND(st_info);
}
inline uint8
Elf32_Sym::Type() const
{
return ELF32_ST_TYPE(st_info);
}
inline uint8
Elf32_Rel::SymbolIndex() const
{
return ELF32_R_SYM(r_info);
}
inline uint8
Elf32_Rel::Type() const
{
return ELF32_R_TYPE(r_info);
}
#endif /* __cplusplus */
#endif /* _ELF32_H_ */
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