FreeBSD/Linux Kernel Cross Reference
sys/sys/elf_common.h

     /*-
      * Copyright (c) 1998 John D. Polstra.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. 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 AUTHOR 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 AUTHOR 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.
     *
     * $FreeBSD: releng/6.3/sys/sys/elf_common.h 173886 2007-11-24 19:45:58Z cvs2svn $
     */
    
    #ifndef _SYS_ELF_COMMON_H_
    #define _SYS_ELF_COMMON_H_ 1
    
    /*
     * ELF definitions that are independent of architecture or word size.
     */
    
    /*
     * Note header.  The ".note" section contains an array of notes.  Each
     * begins with this header, aligned to a word boundary.  Immediately
     * following the note header is n_namesz bytes of name, padded to the
     * next word boundary.  Then comes n_descsz bytes of descriptor, again
     * padded to a word boundary.  The values of n_namesz and n_descsz do
     * not include the padding.
     */
    
    typedef struct {
            u_int32_t       n_namesz;       /* Length of name. */
            u_int32_t       n_descsz;       /* Length of descriptor. */
            u_int32_t       n_type;         /* Type of this note. */
    } Elf_Note;
    
    /* Indexes into the e_ident array.  Keep synced with 
       http://www.sco.com/developer/gabi/ch4.eheader.html */
    #define EI_MAG0         0       /* Magic number, byte 0. */
    #define EI_MAG1         1       /* Magic number, byte 1. */
    #define EI_MAG2         2       /* Magic number, byte 2. */
    #define EI_MAG3         3       /* Magic number, byte 3. */
    #define EI_CLASS        4       /* Class of machine. */
    #define EI_DATA         5       /* Data format. */
    #define EI_VERSION      6       /* ELF format version. */
    #define EI_OSABI        7       /* Operating system / ABI identification */
    #define EI_ABIVERSION   8       /* ABI version */
    #define OLD_EI_BRAND    8       /* Start of architecture identification. */
    #define EI_PAD          9       /* Start of padding (per SVR4 ABI). */
    #define EI_NIDENT       16      /* Size of e_ident array. */
    
    /* Values for the magic number bytes. */
    #define ELFMAG0         0x7f
    #define ELFMAG1         'E'
    #define ELFMAG2         'L'
    #define ELFMAG3         'F'
    #define ELFMAG          "\177ELF"       /* magic string */
    #define SELFMAG         4               /* magic string size */
    
    /* Values for e_ident[EI_VERSION] and e_version. */
    #define EV_NONE         0
    #define EV_CURRENT      1
    
    /* Values for e_ident[EI_CLASS]. */
    #define ELFCLASSNONE    0       /* Unknown class. */
    #define ELFCLASS32      1       /* 32-bit architecture. */
    #define ELFCLASS64      2       /* 64-bit architecture. */
    
    /* Values for e_ident[EI_DATA]. */
    #define ELFDATANONE     0       /* Unknown data format. */
    #define ELFDATA2LSB     1       /* 2's complement little-endian. */
    #define ELFDATA2MSB     2       /* 2's complement big-endian. */
    
    /* Values for e_ident[EI_OSABI]. */
    #define ELFOSABI_NONE           0       /* UNIX System V ABI */
    #define ELFOSABI_HPUX           1       /* HP-UX operating system */
    #define ELFOSABI_NETBSD         2       /* NetBSD */
    #define ELFOSABI_LINUX          3       /* GNU/Linux */
    #define ELFOSABI_HURD           4       /* GNU/Hurd */
    #define ELFOSABI_86OPEN         5       /* 86Open common IA32 ABI */
    #define ELFOSABI_SOLARIS        6       /* Solaris */
    #define ELFOSABI_AIX            7       /* AIX */
    #define ELFOSABI_IRIX           8       /* IRIX */
    #define ELFOSABI_FREEBSD        9       /* FreeBSD */
    #define ELFOSABI_TRU64          10      /* TRU64 UNIX */
   #define ELFOSABI_MODESTO        11      /* Novell Modesto */
   #define ELFOSABI_OPENBSD        12      /* OpenBSD */
   #define ELFOSABI_OPENVMS        13      /* Open VMS */
   #define ELFOSABI_NSK            14      /* HP Non-Stop Kernel */
   #define ELFOSABI_ARM            97      /* ARM */
   #define ELFOSABI_STANDALONE     255     /* Standalone (embedded) application */
   
   #define ELFOSABI_SYSV           ELFOSABI_NONE   /* symbol used in old spec */
   #define ELFOSABI_MONTEREY       ELFOSABI_AIX    /* Monterey */
   
   /* e_ident */
   #define IS_ELF(ehdr)    ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \
                            (ehdr).e_ident[EI_MAG1] == ELFMAG1 && \
                            (ehdr).e_ident[EI_MAG2] == ELFMAG2 && \
                            (ehdr).e_ident[EI_MAG3] == ELFMAG3)
   
   /* Values for e_type. */
   #define ET_NONE         0       /* Unknown type. */
   #define ET_REL          1       /* Relocatable. */
   #define ET_EXEC         2       /* Executable. */
   #define ET_DYN          3       /* Shared object. */
   #define ET_CORE         4       /* Core file. */
   #define ET_LOOS         0xfe00  /* First operating system specific. */
   #define ET_HIOS         0xfeff  /* Last operating system-specific. */
   #define ET_LOPROC       0xff00  /* First processor-specific. */
   #define ET_HIPROC       0xffff  /* Last processor-specific. */
   
   /* Values for e_machine. */
   #define EM_NONE         0       /* Unknown machine. */
   #define EM_M32          1       /* AT&T WE32100. */
   #define EM_SPARC        2       /* Sun SPARC. */
   #define EM_386          3       /* Intel i386. */
   #define EM_68K          4       /* Motorola 68000. */
   #define EM_88K          5       /* Motorola 88000. */
   #define EM_860          7       /* Intel i860. */
   #define EM_MIPS         8       /* MIPS R3000 Big-Endian only. */
   #define EM_S370         9       /* IBM System/370. */
   #define EM_MIPS_RS3_LE  10      /* MIPS R3000 Little-Endian. */
   #define EM_PARISC       15      /* HP PA-RISC. */
   #define EM_VPP500       17      /* Fujitsu VPP500. */
   #define EM_SPARC32PLUS  18      /* SPARC v8plus. */
   #define EM_960          19      /* Intel 80960. */
   #define EM_PPC          20      /* PowerPC 32-bit. */
   #define EM_PPC64        21      /* PowerPC 64-bit. */
   #define EM_S390         22      /* IBM System/390. */
   #define EM_V800         36      /* NEC V800. */
   #define EM_FR20         37      /* Fujitsu FR20. */
   #define EM_RH32         38      /* TRW RH-32. */
   #define EM_RCE          39      /* Motorola RCE. */
   #define EM_ARM          40      /* ARM. */
   #define EM_SH           42      /* Hitachi SH. */
   #define EM_SPARCV9      43      /* SPARC v9 64-bit. */
   #define EM_TRICORE      44      /* Siemens TriCore embedded processor. */
   #define EM_ARC          45      /* Argonaut RISC Core. */
   #define EM_H8_300       46      /* Hitachi H8/300. */
   #define EM_H8_300H      47      /* Hitachi H8/300H. */
   #define EM_H8S          48      /* Hitachi H8S. */
   #define EM_H8_500       49      /* Hitachi 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 MMA. */
   #define EM_PCP          55      /* Siemens PCP. */
   #define EM_NCPU         56      /* Sony nCPU. */
   #define EM_NDR1         57      /* Denso NDR1 microprocessor. */
   #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 processor. */
   #define EM_X86_64       62      /* Advanced Micro Devices x86-64 */
   
   /* Non-standard or deprecated. */
   #define EM_486          6       /* Intel i486. */
   #define EM_MIPS_RS4_BE  10      /* MIPS R4000 Big-Endian */
   #define EM_ALPHA_STD    41      /* Digital Alpha (standard value). */
   #define EM_ALPHA        0x9026  /* Alpha (written in the absence of an ABI) */
   
   /* Special section indexes. */
   #define SHN_UNDEF            0          /* Undefined, missing, irrelevant. */
   #define SHN_LORESERVE   0xff00          /* First of reserved range. */
   #define SHN_LOPROC      0xff00          /* First processor-specific. */
   #define SHN_HIPROC      0xff1f          /* Last processor-specific. */
   #define SHN_LOOS        0xff20          /* First operating system-specific. */
   #define SHN_HIOS        0xff3f          /* Last operating system-specific. */
   #define SHN_ABS         0xfff1          /* Absolute values. */
   #define SHN_COMMON      0xfff2          /* Common data. */
   #define SHN_XINDEX      0xffff          /* Escape -- index stored elsewhere. */
   #define SHN_HIRESERVE   0xffff          /* Last of reserved range. */
   
   /* sh_type */
   #define SHT_NULL                0       /* inactive */
   #define SHT_PROGBITS            1       /* program defined information */
   #define SHT_SYMTAB              2       /* symbol table section */
   #define SHT_STRTAB              3       /* string table section */
   #define SHT_RELA                4       /* relocation section with addends */
   #define SHT_HASH                5       /* symbol hash table section */
   #define SHT_DYNAMIC             6       /* dynamic section */ 
   #define SHT_NOTE                7       /* note section */
   #define SHT_NOBITS              8       /* no space section */
   #define SHT_REL                 9       /* relocation section - no addends */
   #define SHT_SHLIB               10      /* reserved - purpose unknown */
   #define SHT_DYNSYM              11      /* dynamic symbol table section */ 
   #define SHT_INIT_ARRAY          14      /* Initialization function pointers. */
   #define SHT_FINI_ARRAY          15      /* Termination function pointers. */
   #define SHT_PREINIT_ARRAY       16      /* Pre-initialization function ptrs. */
   #define SHT_GROUP               17      /* Section group. */
   #define SHT_SYMTAB_SHNDX        18      /* Section indexes (see SHN_XINDEX). */
   #define SHT_LOOS        0x60000000      /* First of OS specific semantics */
   #define SHT_HIOS        0x6fffffff      /* Last of OS specific semantics */
   #define SHT_LOPROC      0x70000000      /* reserved range for processor */
   #define SHT_HIPROC      0x7fffffff      /* specific section header types */
   #define SHT_LOUSER      0x80000000      /* reserved range for application */
   #define SHT_HIUSER      0xffffffff      /* specific indexes */
   
   /* Flags for sh_flags. */
   #define SHF_WRITE               0x1     /* Section contains writable data. */
   #define SHF_ALLOC               0x2     /* Section occupies memory. */
   #define SHF_EXECINSTR           0x4     /* Section contains instructions. */
   #define SHF_MERGE               0x10    /* Section may be merged. */
   #define SHF_STRINGS             0x20    /* Section contains strings. */
   #define SHF_INFO_LINK           0x40    /* sh_info holds section index. */
   #define SHF_LINK_ORDER          0x80    /* Special ordering requirements. */
   #define SHF_OS_NONCONFORMING    0x100   /* OS-specific processing required. */
   #define SHF_GROUP               0x200   /* Member of section group. */
   #define SHF_TLS                 0x400   /* Section contains TLS data. */
   #define SHF_MASKOS      0x0ff00000      /* OS-specific semantics. */
   #define SHF_MASKPROC    0xf0000000      /* Processor-specific semantics. */
   
   /* Values for p_type. */
   #define PT_NULL         0       /* Unused entry. */
   #define PT_LOAD         1       /* Loadable segment. */
   #define PT_DYNAMIC      2       /* Dynamic linking information segment. */
   #define PT_INTERP       3       /* Pathname of interpreter. */
   #define PT_NOTE         4       /* Auxiliary information. */
   #define PT_SHLIB        5       /* Reserved (not used). */
   #define PT_PHDR         6       /* Location of program header itself. */
   #define PT_TLS          7       /* Thread local storage segment */
   #define PT_LOOS         0x60000000      /* First OS-specific. */
   #define PT_HIOS         0x6fffffff      /* Last OS-specific. */
   #define PT_LOPROC       0x70000000      /* First processor-specific type. */
   #define PT_HIPROC       0x7fffffff      /* Last processor-specific type. */
   
   /* Values for p_flags. */
   #define PF_X            0x1             /* Executable. */
   #define PF_W            0x2             /* Writable. */
   #define PF_R            0x4             /* Readable. */
   #define PF_MASKOS       0x0ff00000      /* Operating system-specific. */
   #define PF_MASKPROC     0xf0000000      /* Processor-specific. */
   
   /* Values for d_tag. */
   #define DT_NULL         0       /* Terminating entry. */
   #define DT_NEEDED       1       /* String table offset of a needed shared
                                      library. */
   #define DT_PLTRELSZ     2       /* Total size in bytes of PLT relocations. */
   #define DT_PLTGOT       3       /* Processor-dependent address. */
   #define DT_HASH         4       /* Address of symbol hash table. */
   #define DT_STRTAB       5       /* Address of string table. */
   #define DT_SYMTAB       6       /* Address of symbol table. */
   #define DT_RELA         7       /* Address of ElfNN_Rela relocations. */
   #define DT_RELASZ       8       /* Total size of ElfNN_Rela relocations. */
   #define DT_RELAENT      9       /* Size of each ElfNN_Rela relocation entry. */
   #define DT_STRSZ        10      /* Size of string table. */
   #define DT_SYMENT       11      /* Size of each symbol table entry. */
   #define DT_INIT         12      /* Address of initialization function. */
   #define DT_FINI         13      /* Address of finalization function. */
   #define DT_SONAME       14      /* String table offset of shared object
                                      name. */
   #define DT_RPATH        15      /* String table offset of library path. [sup] */
   #define DT_SYMBOLIC     16      /* Indicates "symbolic" linking. [sup] */
   #define DT_REL          17      /* Address of ElfNN_Rel relocations. */
   #define DT_RELSZ        18      /* Total size of ElfNN_Rel relocations. */
   #define DT_RELENT       19      /* Size of each ElfNN_Rel relocation. */
   #define DT_PLTREL       20      /* Type of relocation used for PLT. */
   #define DT_DEBUG        21      /* Reserved (not used). */
   #define DT_TEXTREL      22      /* Indicates there may be relocations in
                                      non-writable segments. [sup] */
   #define DT_JMPREL       23      /* Address of PLT relocations. */
   #define DT_BIND_NOW     24      /* [sup] */
   #define DT_INIT_ARRAY   25      /* Address of the array of pointers to
                                      initialization functions */
   #define DT_FINI_ARRAY   26      /* Address of the array of pointers to
                                      termination functions */
   #define DT_INIT_ARRAYSZ 27      /* Size in bytes of the array of
                                      initialization functions. */
   #define DT_FINI_ARRAYSZ 28      /* Size in bytes of the array of
                                      terminationfunctions. */
   #define DT_RUNPATH      29      /* String table offset of a null-terminated
                                      library search path string. */
   #define DT_FLAGS        30      /* Object specific flag values. */
   #define DT_ENCODING     32      /* Values greater than or equal to DT_ENCODING
                                      and less than DT_LOOS follow the rules for
                                      the interpretation of the d_un union
                                      as follows: even == 'd_ptr', even == 'd_val'
                                      or none */
   #define DT_PREINIT_ARRAY 32     /* Address of the array of pointers to
                                      pre-initialization functions. */
   #define DT_PREINIT_ARRAYSZ 33   /* Size in bytes of the array of
                                      pre-initialization functions. */
   #define DT_LOOS         0x6000000d      /* First OS-specific */
   #define DT_HIOS         0x6ffff000      /* Last OS-specific */
   #define DT_LOPROC       0x70000000      /* First processor-specific type. */
   #define DT_HIPROC       0x7fffffff      /* Last processor-specific type. */
   
   /* Values for DT_FLAGS */
   #define DF_ORIGIN       0x0001  /* Indicates that the object being loaded may
                                      make reference to the $ORIGIN substitution
                                      string */
   #define DF_SYMBOLIC     0x0002  /* Indicates "symbolic" linking. */
   #define DF_TEXTREL      0x0004  /* Indicates there may be relocations in
                                      non-writable segments. */
   #define DF_BIND_NOW     0x0008  /* Indicates that the dynamic linker should
                                      process all relocations for the object
                                      containing this entry before transferring
                                      control to the program. */
   #define DF_STATIC_TLS   0x0010  /* Indicates that the shared object or
                                      executable contains code using a static
                                      thread-local storage scheme. */
   
   /* Values for n_type.  Used in core files. */
   #define NT_PRSTATUS     1       /* Process status. */
   #define NT_FPREGSET     2       /* Floating point registers. */
   #define NT_PRPSINFO     3       /* Process state info. */
   
   /* Symbol Binding - ELFNN_ST_BIND - st_info */
   #define STB_LOCAL       0       /* Local symbol */
   #define STB_GLOBAL      1       /* Global symbol */
   #define STB_WEAK        2       /* like global - lower precedence */
   #define STB_LOOS        10      /* Reserved range for operating system */
   #define STB_HIOS        12      /*   specific semantics. */
   #define STB_LOPROC      13      /* reserved range for processor */
   #define STB_HIPROC      15      /*   specific semantics. */
   
   /* Symbol type - ELFNN_ST_TYPE - st_info */
   #define STT_NOTYPE      0       /* Unspecified type. */
   #define STT_OBJECT      1       /* Data object. */
   #define STT_FUNC        2       /* Function. */
   #define STT_SECTION     3       /* Section. */
   #define STT_FILE        4       /* Source file. */
   #define STT_COMMON      5       /* Uninitialized common block. */
   #define STT_TLS         6       /* TLS object. */
   #define STT_LOOS        10      /* Reserved range for operating system */
   #define STT_HIOS        12      /*   specific semantics. */
   #define STT_LOPROC      13      /* reserved range for processor */
   #define STT_HIPROC      15      /*   specific semantics. */
   
   /* Symbol visibility - ELFNN_ST_VISIBILITY - st_other */
   #define STV_DEFAULT     0x0     /* Default visibility (see binding). */
   #define STV_INTERNAL    0x1     /* Special meaning in relocatable objects. */
   #define STV_HIDDEN      0x2     /* Not visible. */
   #define STV_PROTECTED   0x3     /* Visible but not preemptible. */
   
   /* Special symbol table indexes. */
   #define STN_UNDEF       0       /* Undefined symbol index. */
   
   #endif /* !_SYS_ELF_COMMON_H_ */

Cache object: 27bfdc06756039284c7e519836f8b523