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Annotation of Gnu-Mach/include/mach/exec/elf.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1995, 1994, 1993, 1992, 1991, 1990  
        !             3:  * Open Software Foundation, Inc. 
        !             4:  *  
        !             5:  * Permission to use, copy, modify, and distribute this software and 
        !             6:  * its documentation for any purpose and without fee is hereby granted, 
        !             7:  * provided that the above copyright notice appears in all copies and 
        !             8:  * that both the copyright notice and this permission notice appear in 
        !             9:  * supporting documentation, and that the name of ("OSF") or Open Software 
        !            10:  * Foundation not be used in advertising or publicity pertaining to 
        !            11:  * distribution of the software without specific, written prior permission. 
        !            12:  *  
        !            13:  * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE 
        !            14:  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
        !            15:  * FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL OSF BE LIABLE FOR ANY 
        !            16:  * SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 
        !            17:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN 
        !            18:  * ACTION OF CONTRACT, NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING 
        !            19:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE 
        !            20:  * 
        !            21:  */
        !            22: /*
        !            23:  * OSF Research Institute MK6.1 (unencumbered) 1/31/1995
        !            24:  */
        !            25: #ifndef _MACH_EXEC_ELF_H_
        !            26: #define _MACH_EXEC_ELF_H_
        !            27: 
        !            28: #include <mach/machine/exec/elf.h>
        !            29: 
        !            30: /* ELF Header - figure 4-3, page 4-4 */
        !            31: 
        !            32: #define EI_NIDENT 16
        !            33: 
        !            34: typedef struct {
        !            35:   unsigned char                e_ident[EI_NIDENT];
        !            36:   Elf32_Half           e_type;
        !            37:   Elf32_Half           e_machine;
        !            38:   Elf32_Word           e_version;
        !            39:   Elf32_Addr           e_entry;
        !            40:   Elf32_Off            e_phoff;
        !            41:   Elf32_Off            e_shoff;
        !            42:   Elf32_Word           e_flags;
        !            43:   Elf32_Half           e_ehsize;
        !            44:   Elf32_Half           e_phentsize;
        !            45:   Elf32_Half           e_phnum;
        !            46:   Elf32_Half           e_shentsize;
        !            47:   Elf32_Half           e_shnum;
        !            48:   Elf32_Half           e_shstrndx;
        !            49: } Elf32_Ehdr;
        !            50: 
        !            51: 
        !            52: /* e_ident[] identification indexes - figure 4-4, page 4-7 */
        !            53:   
        !            54: #define EI_MAG0                0
        !            55: #define EI_MAG1                1
        !            56: #define EI_MAG2                2
        !            57: #define EI_MAG3                3
        !            58: #define EI_CLASS       4
        !            59: #define EI_DATA                5
        !            60: #define EI_VERSION     6
        !            61: #define EI_PAD         7
        !            62: 
        !            63: /* magic number - pg 4-8 */
        !            64: 
        !            65: #define ELFMAG0                0x7f
        !            66: #define ELFMAG1                'E'
        !            67: #define ELFMAG2                'L'
        !            68: #define ELFMAG3                'F'
        !            69: 
        !            70: /* file class or capacity - page 4-8 */
        !            71: 
        !            72: #define ELFCLASSNONE   0
        !            73: #define ELFCLASS32     1
        !            74: #define ELFCLASS64     2
        !            75: 
        !            76: /* date encoding - page 4-9 */
        !            77: 
        !            78: #define ELFDATANONE    0
        !            79: #define ELFDATA2LSB    1
        !            80: #define ELFDATA2MSB    2
        !            81: 
        !            82: /* object file types - page 4-5 */
        !            83: 
        !            84: #define ET_NONE                0
        !            85: #define ET_REL         1
        !            86: #define ET_EXEC                2
        !            87: #define ET_DYN         3
        !            88: #define ET_CORE                4
        !            89: 
        !            90: #define ET_LOPROC      0xff00
        !            91: #define ET_HIPROC      0xffff
        !            92: 
        !            93: /* architecture - page 4-5 */
        !            94: 
        !            95: #define EM_NONE                0
        !            96: #define EM_M32         1
        !            97: #define EM_SPARC       2
        !            98: #define EM_386         3
        !            99: #define EM_68K         4
        !           100: #define EM_88K         5
        !           101: #define EM_860         7
        !           102: #define EM_MIPS                8
        !           103: #define EM_MIPS_RS4_BE 10
        !           104: #define EM_SPARC64     11
        !           105: #define EM_PARISC      15
        !           106: #define EM_PPC         20
        !           107: 
        !           108: /* version - page 4-6 */
        !           109: 
        !           110: #define EV_NONE                0
        !           111: #define EV_CURRENT     1
        !           112: 
        !           113: /* special section indexes - page 4-11, figure 4-7 */
        !           114: 
        !           115: #define SHN_UNDEF       0
        !           116: #define SHN_LORESERVE   0xff00
        !           117: #define SHN_LOPROC      0xff00
        !           118: #define SHN_HIPROC      0xff1f
        !           119: #define SHN_ABS         0xfff1
        !           120: #define SHN_COMMON      0xfff2
        !           121: #define SHN_HIRESERVE   0xffff
        !           122: 
        !           123: /* section header - page 4-13, figure 4-8 */
        !           124: 
        !           125: typedef struct {
        !           126:   Elf32_Word           sh_name;
        !           127:   Elf32_Word           sh_type;
        !           128:   Elf32_Word           sh_flags;
        !           129:   Elf32_Addr           sh_addr;
        !           130:   Elf32_Off            sh_offset;
        !           131:   Elf32_Word           sh_size;
        !           132:   Elf32_Word           sh_link;
        !           133:   Elf32_Word           sh_info;
        !           134:   Elf32_Word           sh_addralign;
        !           135:   Elf32_Word           sh_entsize;
        !           136: } Elf32_Shdr;
        !           137: 
        !           138: /* section types - page 4-15, figure 4-9 */
        !           139: 
        !           140: #define SHT_NULL       0
        !           141: #define SHT_PROGBITS   1
        !           142: #define SHT_SYMTAB     2
        !           143: #define SHT_STRTAB     3
        !           144: #define SHT_RELA       4
        !           145: #define SHT_HASH       5
        !           146: #define SHT_DYNAMIC    6
        !           147: #define SHT_NOTE       7
        !           148: #define SHT_NOBITS     8
        !           149: #define SHT_REL                9
        !           150: #define SHT_SHLIB      10
        !           151: #define SHT_DYNSYM     11
        !           152: 
        !           153: #define SHT_LOPROC     0x70000000
        !           154: #define SHT_HIPROC     0x7fffffff
        !           155: #define SHT_LOUSER     0x80000000
        !           156: #define SHT_HIUSER     0xffffffff
        !           157: 
        !           158: /* section attribute flags - page 4-18, figure 4-11 */
        !           159: 
        !           160: #define        SHF_WRITE       0x1
        !           161: #define SHF_ALLOC      0x2
        !           162: #define        SHF_EXECINSTR   0x4
        !           163: #define SHF_MASKPROC   0xf0000000
        !           164: 
        !           165: /* symbol table - page 4-25, figure 4-15 */
        !           166: typedef struct
        !           167: {
        !           168:     Elf32_Word    st_name;
        !           169:     Elf32_Addr    st_value;
        !           170:     Elf32_Word    st_size;
        !           171:     unsigned char st_info;
        !           172:     unsigned char st_other;
        !           173:     Elf32_Half    st_shndx;
        !           174: } Elf32_Sym;
        !           175: 
        !           176: /* symbol type and binding attributes - page 4-26 */
        !           177: 
        !           178: #define ELF32_ST_BIND(i)    ((i) >> 4)
        !           179: #define ELF32_ST_TYPE(i)    ((i) & 0xf)
        !           180: #define ELF32_ST_INFO(b,t)  (((b)<<4)+((t)&0xf))
        !           181: 
        !           182: /* symbol binding - page 4-26, figure 4-16 */
        !           183: 
        !           184: #define STB_LOCAL    0
        !           185: #define STB_GLOBAL   1
        !           186: #define STB_WEAK     2
        !           187: #define STB_LOPROC  13
        !           188: #define STB_HIPROC  15
        !           189: 
        !           190: /* symbol types - page 4-28, figure 4-17 */
        !           191: 
        !           192: #define STT_NOTYPE   0
        !           193: #define STT_OBJECT   1
        !           194: #define STT_FUNC     2
        !           195: #define STT_SECTION  3
        !           196: #define STT_FILE     4
        !           197: #define STT_LOPROC  13
        !           198: #define STT_HIPROC  15
        !           199: 
        !           200: 
        !           201: /* relocation entries - page 4-31, figure 4-19 */
        !           202: 
        !           203: typedef struct
        !           204: {
        !           205:     Elf32_Addr r_offset;
        !           206:     Elf32_Word r_info;
        !           207: } Elf32_Rel;
        !           208: 
        !           209: typedef struct
        !           210: {
        !           211:     Elf32_Addr r_offset;
        !           212:     Elf32_Word r_info;
        !           213:     Elf32_Sword r_addend;
        !           214: } Elf32_Rela;
        !           215: 
        !           216: /* Macros to split/combine relocation type and symbol page 4-32 */
        !           217: 
        !           218: #define ELF32_R_SYM(__i)       ((__i)>>8)
        !           219: #define ELF32_R_TYPE(__i)      ((unsigned char) (__i))
        !           220: #define ELF32_R_INFO(__s, __t) (((__s)<<8) + (unsigned char) (__t))
        !           221: 
        !           222: 
        !           223: /* program header - page 5-2, figure 5-1 */
        !           224: 
        !           225: typedef struct {
        !           226:   Elf32_Word           p_type;
        !           227:   Elf32_Off            p_offset;
        !           228:   Elf32_Addr           p_vaddr;
        !           229:   Elf32_Addr           p_paddr;
        !           230:   Elf32_Word           p_filesz;
        !           231:   Elf32_Word           p_memsz;
        !           232:   Elf32_Word           p_flags;
        !           233:   Elf32_Word           p_align;
        !           234: } Elf32_Phdr;
        !           235: 
        !           236: /* segment types - page 5-3, figure 5-2 */
        !           237: 
        !           238: #define PT_NULL                0
        !           239: #define PT_LOAD                1
        !           240: #define PT_DYNAMIC     2
        !           241: #define PT_INTERP      3
        !           242: #define PT_NOTE                4
        !           243: #define PT_SHLIB       5
        !           244: #define PT_PHDR                6
        !           245: 
        !           246: #define PT_LOPROC      0x70000000
        !           247: #define PT_HIPROC      0x7fffffff
        !           248: 
        !           249: /* segment permissions - page 5-6 */
        !           250: 
        !           251: #define PF_X           0x1
        !           252: #define PF_W           0x2
        !           253: #define PF_R           0x4
        !           254: #define PF_MASKPROC    0xf0000000
        !           255: 
        !           256: 
        !           257: /* dynamic structure - page 5-15, figure 5-9 */
        !           258: 
        !           259: typedef struct {
        !           260:        Elf32_Sword     d_tag;
        !           261:        union {
        !           262:            Elf32_Word  d_val;
        !           263:            Elf32_Addr  d_ptr;
        !           264:        } d_un;
        !           265: } Elf32_Dyn;
        !           266: 
        !           267: /* Dynamic array tags - page 5-16, figure 5-10.  */
        !           268: 
        !           269: #define DT_NULL                0
        !           270: #define DT_NEEDED      1
        !           271: #define DT_PLTRELSZ    2
        !           272: #define DT_PLTGOT      3
        !           273: #define DT_HASH                4
        !           274: #define DT_STRTAB      5
        !           275: #define DT_SYMTAB      6
        !           276: #define DT_RELA                7
        !           277: #define DT_RELASZ      8
        !           278: #define DT_RELAENT      9
        !           279: #define DT_STRSZ       10
        !           280: #define DT_SYMENT      11
        !           281: #define DT_INIT                12
        !           282: #define DT_FINI                13
        !           283: #define DT_SONAME      14
        !           284: #define DT_RPATH       15
        !           285: #define DT_SYMBOLIC    16
        !           286: #define DT_REL         17
        !           287: #define DT_RELSZ       18
        !           288: #define DT_RELENT      19
        !           289: #define DT_PLTREL      20
        !           290: #define DT_DEBUG       21
        !           291: #define DT_TEXTREL     22
        !           292: #define DT_JMPREL      23
        !           293: 
        !           294: /*
        !           295:  *     Bootstrap doesn't need machine dependent extensions.
        !           296:  */
        !           297: 
        !           298: #endif /* _MACH_EXEC_ELF_H_ */

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