1 1.1 itohy /* 2 1.2 itohy * m68k a.out / ELF file structure definitions 3 1.1 itohy * 4 1.4 itohy * written by ITOH Yasufumi 5 1.1 itohy * public domain 6 1.1 itohy * 7 1.4 itohy * $NetBSD: aout68k.h,v 1.4 2011/02/21 02:31:58 itohy Exp $ 8 1.1 itohy */ 9 1.1 itohy /* 10 1.1 itohy * NetBSD/m68k a.out format (OMAGIC, NMAGIC) 11 1.1 itohy * 12 1.1 itohy * ---------------------------- 13 1.1 itohy * | file header (32 bytes) | 14 1.1 itohy * |--------------------------| 15 1.1 itohy * | text | 16 1.1 itohy * |--------------------------| 17 1.1 itohy * | data | 18 1.1 itohy * |--------------------------| 19 1.1 itohy * | text relocation table | 20 1.1 itohy * |--------------------------| 21 1.1 itohy * | data relocation table | 22 1.1 itohy * |--------------------------| 23 1.1 itohy * | symbol table | 24 1.1 itohy * |--------------------------| 25 1.1 itohy * | string table | 26 1.1 itohy * ---------------------------- 27 1.1 itohy * 28 1.1 itohy * OMAGIC: text and data segments are loaded contiguous 29 1.1 itohy * NMAGIC: data segment is loaded at the next page of the text 30 1.1 itohy */ 31 1.1 itohy 32 1.1 itohy struct aout_m68k { 33 1.1 itohy be_uint32_t a_magic; /* encoded magic number */ 34 1.1 itohy be_uint32_t a_text; /* size of text section */ 35 1.1 itohy be_uint32_t a_data; /* size of data section */ 36 1.1 itohy be_uint32_t a_bss; /* size of bss */ 37 1.1 itohy be_uint32_t a_syms; /* size of symbol table */ 38 1.1 itohy be_uint32_t a_entry; /* entry point address */ 39 1.1 itohy be_uint32_t a_trsize; /* size of text relocation */ 40 1.1 itohy be_uint32_t a_drsize; /* size of data relocation */ 41 1.1 itohy }; 42 1.1 itohy 43 1.1 itohy #define AOUT_GET_MAGIC(e) (((e)->a_magic.val[2]<<8) | (e)->a_magic.val[3]) 44 1.1 itohy #define AOUT_OMAGIC 0407 45 1.1 itohy #define AOUT_NMAGIC 0410 46 1.1 itohy #define AOUT_ZMAGIC 0413 /* demand paging --- header is in the text */ 47 1.1 itohy 48 1.1 itohy #define AOUT_GET_FLAGS(e) ((e)->a_magic.val[0] >> 2) 49 1.1 itohy #define AOUT_FLAG_PIC 0x10 50 1.1 itohy #define AOUT_FLAG_DYNAMIC 0x20 51 1.1 itohy 52 1.1 itohy /* machine ID */ 53 1.1 itohy #define AOUT_GET_MID(e) ((((e)->a_magic.val[0] & 0x03) << 8) | \ 54 1.1 itohy (e)->a_magic.val[1]) 55 1.1 itohy #define AOUT_MID_M68K 135 /* m68k BSD binary, 8KB page */ 56 1.1 itohy #define AOUT_MID_M68K4K 136 /* m68k BSD binary, 4KB page */ 57 1.1 itohy 58 1.1 itohy #define AOUT_PAGESIZE(e) (AOUT_GET_MAGIC(e) == AOUT_OMAGIC ? 1 : \ 59 1.1 itohy AOUT_GET_MID(e) == AOUT_MID_M68K ? 8192 : 4096) 60 1.2 itohy 61 1.2 itohy /* 62 1.2 itohy * m68k ELF executable format 63 1.2 itohy * 64 1.2 itohy * -------------------------------------- 65 1.2 itohy * | ELF header (52 bytes) | 66 1.2 itohy * |------------------------------------| 67 1.2 itohy * | Program header (32bytes x 1 or 2) | 68 1.2 itohy * |------------------------------------| 69 1.2 itohy * | section 1 (text) | 70 1.2 itohy * |------------------------------------| 71 1.2 itohy * | section 2 (data) | 72 1.2 itohy * |------------------------------------| 73 1.2 itohy * | ... | 74 1.2 itohy * |------------------------------------| 75 1.2 itohy * | section header table (optional) | 76 1.2 itohy * -------------------------------------- 77 1.2 itohy */ 78 1.2 itohy 79 1.2 itohy /* 80 1.2 itohy * ELF header for m68k 81 1.2 itohy */ 82 1.2 itohy struct elf_m68k_hdr { 83 1.2 itohy #define EI_MAG0 0 84 1.2 itohy #define EI_MAG1 1 85 1.2 itohy #define EI_MAG2 2 86 1.2 itohy #define EI_MAG3 3 87 1.2 itohy #define EI_CLASS 4 88 1.2 itohy #define EI_DATA 5 89 1.2 itohy #define EI_VERSION 6 90 1.2 itohy #define EL_NIDENT 16 91 1.2 itohy u_int8_t e_ident[EL_NIDENT]; /* ELF magic */ 92 1.2 itohy #define ELFMAG0 0x7f 93 1.2 itohy #define ELFMAG1 0x45 /* 'E' */ 94 1.2 itohy #define ELFMAG2 0x4c /* 'L' */ 95 1.2 itohy #define ELFMAG3 0x46 /* 'F' */ 96 1.2 itohy #define ELFCLASS32 1 /* 32bit */ 97 1.2 itohy #define ELFDATA2MSB 2 /* big endian */ 98 1.2 itohy be_uint16_t e_type; /* type of this file */ 99 1.3 itohy #define ET_EXEC 2 100 1.2 itohy be_uint16_t e_machine; /* architecture id */ 101 1.2 itohy #define EM_68K 4 102 1.2 itohy be_uint32_t e_version; 103 1.2 itohy #define EV_CURRENT 1 104 1.2 itohy be_uint32_t e_entry; /* entry address */ 105 1.2 itohy be_uint32_t e_phoff; /* program header address */ 106 1.2 itohy be_uint32_t e_shoff; 107 1.2 itohy be_uint32_t e_flags; 108 1.2 itohy be_uint16_t e_ehsize; 109 1.2 itohy be_uint16_t e_phentsize; /* program header entry size */ 110 1.2 itohy be_uint16_t e_phnum; /* number of program header entries */ 111 1.2 itohy be_uint16_t e_shentsize; /* section header entry size */ 112 1.2 itohy be_uint16_t e_shnum; /* number of section header entries */ 113 1.2 itohy be_uint16_t e_shstrndx; 114 1.2 itohy }; 115 1.2 itohy 116 1.2 itohy #define SIZE_ELF68K_HDR (sizeof(struct elf_m68k_hdr)) 117 1.2 itohy 118 1.2 itohy /* 119 1.2 itohy * Section header for m68k ELF 120 1.2 itohy */ 121 1.2 itohy struct elf_m68k_shdr { 122 1.2 itohy be_uint32_t sh_name; 123 1.2 itohy be_uint32_t sh_type; 124 1.2 itohy #define SHT_PROGBITS 1 125 1.2 itohy be_uint32_t sh_flags; 126 1.2 itohy #define SHF_WRITE 1 127 1.2 itohy #define SHF_ALLOC 2 128 1.2 itohy #define SHF_EXECINSTR 4 129 1.2 itohy be_uint32_t sh_addr; 130 1.2 itohy be_uint32_t sh_offset; 131 1.2 itohy be_uint32_t sh_size; 132 1.2 itohy be_uint32_t sh_link; 133 1.2 itohy be_uint32_t sh_info; 134 1.2 itohy be_uint32_t sh_addralign; 135 1.2 itohy be_uint32_t sh_entsize; 136 1.2 itohy }; 137 1.2 itohy 138 1.2 itohy #define ELF68K_ISDATASEG(sh) \ 139 1.2 itohy (get_uint32(&(sh)->sh_type) == SHT_PROGBITS && \ 140 1.2 itohy (get_uint32(&(sh)->sh_flags) & \ 141 1.2 itohy (SHF_WRITE | SHF_ALLOC | SHF_EXECINSTR)) == \ 142 1.2 itohy (SHF_WRITE | SHF_ALLOC)) /* no SHF_EXECINSTR */ 143 1.2 itohy 144 1.2 itohy #define SIZE_ELF68K_SHDR (sizeof(struct elf_m68k_shdr)) 145 1.2 itohy 146 1.2 itohy /* 147 1.2 itohy * Program header for m68k ELF 148 1.2 itohy */ 149 1.2 itohy struct elf_m68k_phdr { 150 1.2 itohy be_uint32_t p_type; /* type of segment */ 151 1.2 itohy #define PT_LOAD 1 152 1.2 itohy be_uint32_t p_offset; /* file offset */ 153 1.2 itohy be_uint32_t p_vaddr; /* virtual address */ 154 1.2 itohy be_uint32_t p_paddr; /* physical address (ignored) */ 155 1.2 itohy be_uint32_t p_filesz; /* size on file */ 156 1.2 itohy be_uint32_t p_memsz; /* size on memory */ 157 1.2 itohy be_uint32_t p_flags; 158 1.2 itohy #define PF_R 4 159 1.2 itohy #define PF_W 2 160 1.2 itohy #define PF_X 1 161 1.2 itohy be_uint32_t p_align; 162 1.2 itohy }; 163 1.2 itohy 164 1.2 itohy #define SIZE_ELF68K_PHDR (sizeof(struct elf_m68k_phdr)) 165
Indexes created Sun Sep 28 16:09:52 GMT 2025