~martin-decky/helenos/rcu

/*

 * Copyright (c) 2006 Sergey Bondari

 * 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.

 * - The name of the author may not be used to endorse or promote products

 *   derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.

 */

/** @addtogroup generic

 * @{

 */

/** @file

 */

#ifndef ABI_ELF_H_

#define ABI_ELF_H_

/**

 * Current ELF version

 */

#define EV_CURRENT  1

/**

 * ELF types

 */

#define ET_NONE    0       /* No type */

#define ET_REL     1       /* Relocatable file */

#define ET_EXEC    2       /* Executable */

#define ET_DYN     3       /* Shared object */

#define ET_CORE    4       /* Core */

#define ET_LOPROC  0xff00  /* Processor specific */

#define ET_HIPROC  0xffff  /* Processor specific */

/**

 * ELF machine types

 */

#define EM_NO           0   /* No machine */

#define EM_SPARC        2   /* SPARC */

#define EM_386          3   /* i386 */

#define EM_MIPS         8   /* MIPS RS3000 */

#define EM_MIPS_RS3_LE  10  /* MIPS RS3000 LE */

#define EM_PPC          20  /* PPC32 */

#define EM_PPC64        21  /* PPC64 */

#define EM_ARM          40  /* ARM */

#define EM_SPARCV9      43  /* SPARC64 */

#define EM_IA_64        50  /* IA-64 */

#define EM_X86_64       62  /* AMD64/EMT64 */

/**

 * ELF identification indexes

 */

#define EI_MAG0        0

#define EI_MAG1        1

#define EI_MAG2        2

#define EI_MAG3        3

#define EI_CLASS       4   /* File class */

#define EI_DATA        5   /* Data encoding */

#define EI_VERSION     6   /* File version */

#define EI_OSABI       7

#define EI_ABIVERSION  8

#define EI_PAD         9   /* Start of padding bytes */

#define EI_NIDENT      16  /* ELF identification table size */

/**

 * ELF magic number

 */

#define ELFMAG0  0x7f

#define ELFMAG1  'E'

#define ELFMAG2  'L'

#define ELFMAG3  'F'

/**

 * ELF file classes

 */

#define ELFCLASSNONE  0

#define ELFCLASS32    1

#define ELFCLASS64    2

/**

 * ELF data encoding types

 */

#define ELFDATANONE  0

#define ELFDATA2LSB  1  /* Least significant byte first (little endian) */

#define ELFDATA2MSB  2  /* Most signigicant byte first (big endian) */

/**

 * ELF section types

 */

#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_LOOS      0x60000000

#define SHT_HIOS      0x6fffffff

#define SHT_LOPROC    0x70000000

#define SHT_HIPROC    0x7fffffff

#define SHT_LOUSER    0x80000000

#define SHT_HIUSER    0xffffffff

/**

 * ELF section flags

 */

#define SHF_WRITE      0x1

#define SHF_ALLOC      0x2

#define SHF_EXECINSTR  0x4

#define SHF_TLS        0x400

#define SHF_MASKPROC   0xf0000000

/** Macros for decomposing elf_symbol.st_info into binging and type */

#define ELF_ST_BIND(i)     ((i) >> 4)

#define ELF_ST_TYPE(i)     ((i) & 0x0f)

#define ELF_ST_INFO(b, t)  (((b) << 4) + ((t) & 0x0f))

/**

 * Symbol binding

 */

#define STB_LOCAL   0

#define STB_GLOBAL  1

#define STB_WEAK    2

#define STB_LOPROC  13

#define STB_HIPROC  15

/**

 * Symbol types

 */

#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

/**

 * Program 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_LOPROC   0x70000000

#define PT_HIPROC   0x7fffffff

/**

 * Program segment attributes.

 */

#define PF_X  1

#define PF_W  2

#define PF_R  4

/**

 * ELF data types

 *

 * These types are found to be identical in both 32-bit and 64-bit

 * ELF object file specifications. They are the only types used

 * in ELF header.

 */

typedef uint64_t elf_xword;

typedef int64_t elf_sxword;

typedef uint32_t elf_word;

typedef int32_t elf_sword;

typedef uint16_t elf_half;

/**

 * 32-bit ELF data types.

 *

 * These types are specific for 32-bit format.

 */

typedef uint32_t elf32_addr;

typedef uint32_t elf32_off;

/**

 * 64-bit ELF data types.

 *

 * These types are specific for 64-bit format.

 */

typedef uint64_t elf64_addr;

typedef uint64_t elf64_off;

/** ELF header */

struct elf32_header {

	uint8_t e_ident[EI_NIDENT];

	elf_half e_type;

	elf_half e_machine;

	elf_word e_version;

	elf32_addr e_entry;

	elf32_off e_phoff;

	elf32_off e_shoff;

	elf_word e_flags;

	elf_half e_ehsize;

	elf_half e_phentsize;

	elf_half e_phnum;

	elf_half e_shentsize;

	elf_half e_shnum;

	elf_half e_shstrndx;

};

struct elf64_header {

	uint8_t e_ident[EI_NIDENT];

	elf_half e_type;

	elf_half e_machine;

	elf_word e_version;

	elf64_addr e_entry;

	elf64_off e_phoff;

	elf64_off e_shoff;

	elf_word e_flags;

	elf_half e_ehsize;

	elf_half e_phentsize;

	elf_half e_phnum;

	elf_half e_shentsize;

	elf_half e_shnum;

	elf_half e_shstrndx;

};

/**

 * ELF segment header.

 * Segments headers are also known as program headers.

 */

struct elf32_segment_header {

	elf_word p_type;

	elf32_off p_offset;

	elf32_addr p_vaddr;

	elf32_addr p_paddr;

	elf_word p_filesz;

	elf_word p_memsz;

	elf_word p_flags;

	elf_word p_align;

};

struct elf64_segment_header {

	elf_word p_type;

	elf_word p_flags;

	elf64_off p_offset;

	elf64_addr p_vaddr;

	elf64_addr p_paddr;

	elf_xword p_filesz;

	elf_xword p_memsz;

	elf_xword p_align;

};

/**

 * ELF section header

 */

struct elf32_section_header {

	elf_word sh_name;

	elf_word sh_type;

	elf_word sh_flags;

	elf32_addr sh_addr;

	elf32_off sh_offset;

	elf_word sh_size;

	elf_word sh_link;

	elf_word sh_info;

	elf_word sh_addralign;

	elf_word sh_entsize;

};

struct elf64_section_header {

	elf_word sh_name;

	elf_word sh_type;

	elf_xword sh_flags;

	elf64_addr sh_addr;

	elf64_off sh_offset;

	elf_xword sh_size;

	elf_word sh_link;

	elf_word sh_info;

	elf_xword sh_addralign;

	elf_xword sh_entsize;

};

/**

 * ELF symbol table entry

 */

struct elf32_symbol {

	elf_word st_name;

	elf32_addr st_value;

	elf_word st_size;

	uint8_t st_info;

	uint8_t st_other;

	elf_half st_shndx;

};

struct elf64_symbol {

	elf_word st_name;

	uint8_t st_info;

	uint8_t st_other;

	elf_half st_shndx;

	elf64_addr st_value;

	elf_xword st_size;

};

/*

 * ELF note segment entry

 */

struct elf32_note {

	elf_word namesz;

	elf_word descsz;

	elf_word type;

};

/*

 * NOTE: namesz, descsz and type should be 64-bits wide (elf_xword)

 * per the 64-bit ELF spec. The Linux kernel however screws up and

 * defines them as Elf64_Word, which is 32-bits wide(!). We are trying

 * to make our core files compatible with Linux GDB target so we copy

 * the blunder here.

 */

struct elf64_note {

	elf_word namesz;

	elf_word descsz;

	elf_word type;

};

#ifdef __32_BITS__

typedef struct elf32_header elf_header_t;

typedef struct elf32_segment_header elf_segment_header_t;

typedef struct elf32_section_header elf_section_header_t;

typedef struct elf32_symbol elf_symbol_t;

typedef struct elf32_note elf_note_t;

#endif

#ifdef __64_BITS__

typedef struct elf64_header elf_header_t;

typedef struct elf64_segment_header elf_segment_header_t;

typedef struct elf64_section_header elf_section_header_t;

typedef struct elf64_symbol elf_symbol_t;

typedef struct elf64_note elf_note_t;

#endif

#endif

/** @}

 */