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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4973 | right-hear | 1 | /* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */ |
| 2 | #ifndef __dj_include_coff_h_ |
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| 3 | #define __dj_include_coff_h_ |
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| 4 | |||
| 5 | #ifdef __cplusplus |
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| 6 | extern "C" { |
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| 7 | #endif |
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| 8 | |||
| 9 | #ifndef __dj_ENFORCE_ANSI_FREESTANDING |
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| 10 | |||
| 11 | #ifndef __STRICT_ANSI__ |
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| 12 | |||
| 13 | #ifndef _POSIX_SOURCE |
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| 14 | |||
| 15 | /*** coff information for Intel 386/486. */ |
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| 16 | |||
| 17 | /********************** FILE HEADER **********************/ |
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| 18 | |||
| 19 | struct external_filehdr { |
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| 20 | unsigned short f_magic; /* magic number */ |
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| 21 | unsigned short f_nscns; /* number of sections */ |
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| 22 | unsigned long f_timdat; /* time & date stamp */ |
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| 23 | unsigned long f_symptr; /* file pointer to symtab */ |
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| 24 | unsigned long f_nsyms; /* number of symtab entries */ |
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| 25 | unsigned short f_opthdr; /* sizeof(optional hdr) */ |
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| 26 | unsigned short f_flags; /* flags */ |
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| 27 | }; |
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| 28 | |||
| 29 | |||
| 30 | /* Bits for f_flags: |
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| 31 | * F_RELFLG relocation info stripped from file |
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| 32 | * F_EXEC file is executable (no unresolved external references) |
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| 33 | * F_LNNO line numbers stripped from file |
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| 34 | * F_LSYMS local symbols stripped from file |
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| 35 | * F_AR32WR file has byte ordering of an AR32WR machine (e.g. vax) |
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| 36 | */ |
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| 37 | |||
| 38 | #define F_RELFLG (0x0001) |
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| 39 | #define F_EXEC (0x0002) |
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| 40 | #define F_LNNO (0x0004) |
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| 41 | #define F_LSYMS (0x0008) |
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| 42 | |||
| 43 | |||
| 44 | |||
| 45 | #define I386MAGIC 0x14c |
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| 46 | #define I386AIXMAGIC 0x175 |
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| 47 | #define I386BADMAG(x) (((x).f_magic!=I386MAGIC) && (x).f_magic!=I386AIXMAGIC) |
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| 48 | |||
| 49 | |||
| 50 | #define FILHDR struct external_filehdr |
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| 51 | #define FILHSZ sizeof(FILHDR) |
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| 52 | |||
| 53 | |||
| 54 | /********************** AOUT "OPTIONAL HEADER" **********************/ |
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| 55 | |||
| 56 | |||
| 57 | typedef struct |
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| 58 | { |
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| 59 | unsigned short magic; /* type of file */ |
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| 60 | unsigned short vstamp; /* version stamp */ |
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| 61 | unsigned long tsize; /* text size in bytes, padded to FW bdry*/ |
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| 62 | unsigned long dsize; /* initialized data " " */ |
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| 63 | unsigned long bsize; /* uninitialized data " " */ |
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| 64 | unsigned long entry; /* entry pt. */ |
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| 65 | unsigned long text_start; /* base of text used for this file */ |
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| 66 | unsigned long data_start; /* base of data used for this file */ |
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| 67 | } |
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| 68 | AOUTHDR; |
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| 69 | |||
| 70 | |||
| 71 | typedef struct gnu_aout { |
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| 72 | unsigned long info; |
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| 73 | unsigned long tsize; |
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| 74 | unsigned long dsize; |
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| 75 | unsigned long bsize; |
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| 76 | unsigned long symsize; |
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| 77 | unsigned long entry; |
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| 78 | unsigned long txrel; |
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| 79 | unsigned long dtrel; |
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| 80 | } GNU_AOUT; |
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| 81 | |||
| 82 | #define AOUTSZ (sizeof(AOUTHDR)) |
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| 83 | |||
| 84 | #define OMAGIC 0404 /* object files, eg as output */ |
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| 85 | #define ZMAGIC 0413 /* demand load format, eg normal ld output */ |
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| 86 | #define STMAGIC 0401 /* target shlib */ |
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| 87 | #define SHMAGIC 0443 /* host shlib */ |
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| 88 | |||
| 89 | |||
| 90 | /********************** SECTION HEADER **********************/ |
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| 91 | |||
| 92 | |||
| 93 | struct external_scnhdr { |
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| 94 | char s_name[8]; /* section name */ |
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| 95 | unsigned long s_paddr; /* physical address, aliased s_nlib */ |
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| 96 | unsigned long s_vaddr; /* virtual address */ |
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| 97 | unsigned long s_size; /* section size */ |
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| 98 | unsigned long s_scnptr; /* file ptr to raw data for section */ |
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| 99 | unsigned long s_relptr; /* file ptr to relocation */ |
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| 100 | unsigned long s_lnnoptr; /* file ptr to line numbers */ |
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| 101 | unsigned short s_nreloc; /* number of relocation entries */ |
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| 102 | unsigned short s_nlnno; /* number of line number entries*/ |
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| 103 | unsigned long s_flags; /* flags */ |
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| 104 | }; |
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| 105 | |||
| 106 | #define SCNHDR struct external_scnhdr |
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| 107 | #define SCNHSZ sizeof(SCNHDR) |
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| 108 | |||
| 109 | /* |
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| 110 | * names of "special" sections |
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| 111 | */ |
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| 112 | #define _TEXT ".text" |
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| 113 | #define _DATA ".data" |
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| 114 | #define _BSS ".bss" |
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| 115 | #define _COMMENT ".comment" |
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| 116 | #define _LIB ".lib" |
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| 117 | |||
| 118 | /* |
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| 119 | * s_flags "type" |
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| 120 | */ |
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| 121 | #define STYP_TEXT (0x0020) /* section contains text only */ |
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| 122 | #define STYP_DATA (0x0040) /* section contains data only */ |
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| 123 | #define STYP_BSS (0x0080) /* section contains bss only */ |
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| 124 | |||
| 125 | /********************** LINE NUMBERS **********************/ |
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| 126 | |||
| 127 | /* 1 line number entry for every "breakpointable" source line in a section. |
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| 128 | * Line numbers are grouped on a per function basis; first entry in a function |
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| 129 | * grouping will have l_lnno = 0 and in place of physical address will be the |
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| 130 | * symbol table index of the function name. |
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| 131 | */ |
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| 132 | struct external_lineno { |
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| 133 | union { |
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| 134 | unsigned long l_symndx __attribute__((packed)); /* function name symbol index, iff l_lnno == 0 */ |
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| 135 | unsigned long l_paddr __attribute__((packed)); /* (physical) address of line number */ |
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| 136 | } l_addr; |
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| 137 | unsigned short l_lnno; /* line number */ |
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| 138 | }; |
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| 139 | |||
| 140 | |||
| 141 | #define LINENO struct external_lineno |
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| 142 | #define LINESZ sizeof(LINENO) |
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| 143 | |||
| 144 | |||
| 145 | /********************** SYMBOLS **********************/ |
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| 146 | |||
| 147 | #define E_SYMNMLEN 8 /* # characters in a symbol name */ |
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| 148 | #define E_FILNMLEN 14 /* # characters in a file name */ |
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| 149 | #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ |
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| 150 | |||
| 151 | struct external_syment |
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| 152 | { |
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| 153 | union { |
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| 154 | char e_name[E_SYMNMLEN]; |
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| 155 | struct { |
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| 156 | unsigned long e_zeroes __attribute__((packed)); |
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| 157 | unsigned long e_offset __attribute__((packed)); |
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| 158 | } e; |
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| 159 | } e; |
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| 160 | unsigned long e_value __attribute__((packed)); |
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| 161 | short e_scnum; |
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| 162 | unsigned short e_type; |
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| 163 | unsigned char e_sclass; |
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| 164 | unsigned char e_numaux; |
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| 165 | }; |
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| 166 | |||
| 167 | #define N_BTMASK (0xf) |
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| 168 | #define N_TMASK (0x30) |
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| 169 | #define N_BTSHFT (4) |
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| 170 | #define N_TSHIFT (2) |
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| 171 | |||
| 172 | union external_auxent { |
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| 173 | struct { |
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| 174 | unsigned long x_tagndx __attribute__((packed)); /* str, un, or enum tag indx */ |
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| 175 | union { |
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| 176 | struct { |
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| 177 | unsigned short x_lnno; /* declaration line number */ |
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| 178 | unsigned short x_size; /* str/union/array size */ |
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| 179 | } x_lnsz; |
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| 180 | unsigned long x_fsize __attribute__((packed)); /* size of function */ |
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| 181 | } x_misc; |
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| 182 | union { |
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| 183 | struct { /* if ISFCN, tag, or .bb */ |
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| 184 | unsigned long x_lnnoptr __attribute__((packed)); /* ptr to fcn line # */ |
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| 185 | unsigned long x_endndx __attribute__((packed)); /* entry ndx past block end */ |
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| 186 | } x_fcn; |
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| 187 | struct { /* if ISARY, up to 4 dimen. */ |
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| 188 | unsigned short x_dimen[E_DIMNUM]; |
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| 189 | } x_ary; |
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| 190 | } x_fcnary; |
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| 191 | unsigned short x_tvndx; /* tv index */ |
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| 192 | } x_sym; |
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| 193 | |||
| 194 | union { |
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| 195 | char x_fname[E_FILNMLEN]; |
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| 196 | struct { |
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| 197 | unsigned long x_zeroes __attribute__((packed)); |
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| 198 | unsigned long x_offset __attribute__((packed)); |
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| 199 | } x_n; |
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| 200 | } x_file; |
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| 201 | |||
| 202 | struct { |
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| 203 | unsigned long x_scnlen __attribute__((packed)); /* section length */ |
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| 204 | unsigned short x_nreloc; /* # relocation entries */ |
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| 205 | unsigned short x_nlinno; /* # line numbers */ |
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| 206 | } x_scn; |
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| 207 | |||
| 208 | struct { |
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| 209 | unsigned long x_tvfill __attribute__((packed)); /* tv fill value */ |
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| 210 | unsigned short x_tvlen; /* length of .tv */ |
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| 211 | unsigned short x_tvran[2]; /* tv range */ |
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| 212 | } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ |
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| 213 | |||
| 214 | |||
| 215 | }; |
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| 216 | |||
| 217 | #define SYMENT struct external_syment |
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| 218 | #define SYMESZ sizeof(SYMENT) |
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| 219 | #define AUXENT union external_auxent |
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| 220 | #define AUXESZ sizeof(AUXENT) |
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| 221 | |||
| 222 | |||
| 223 | # define _ETEXT "etext" |
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| 224 | |||
| 225 | |||
| 226 | /* Relocatable symbols have number of the section in which they are defined, |
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| 227 | or one of the following: */ |
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| 228 | |||
| 229 | #define N_UNDEF ((short)0) /* undefined symbol */ |
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| 230 | #define N_ABS ((short)-1) /* value of symbol is absolute */ |
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| 231 | #define N_DEBUG ((short)-2) /* debugging symbol -- value is meaningless */ |
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| 232 | #define N_TV ((short)-3) /* indicates symbol needs preload transfer vector */ |
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| 233 | #define P_TV ((short)-4) /* indicates symbol needs postload transfer vector*/ |
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| 234 | |||
| 235 | /* |
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| 236 | * Type of a symbol, in low N bits of the word |
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| 237 | */ |
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| 238 | #define T_NULL 0 |
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| 239 | #define T_VOID 1 /* function argument (only used by compiler) */ |
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| 240 | #define T_CHAR 2 /* character */ |
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| 241 | #define T_SHORT 3 /* short integer */ |
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| 242 | #define T_INT 4 /* integer */ |
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| 243 | #define T_LONG 5 /* long integer */ |
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| 244 | #define T_FLOAT 6 /* floating point */ |
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| 245 | #define T_DOUBLE 7 /* double word */ |
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| 246 | #define T_STRUCT 8 /* structure */ |
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| 247 | #define T_UNION 9 /* union */ |
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| 248 | #define T_ENUM 10 /* enumeration */ |
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| 249 | #define T_MOE 11 /* member of enumeration*/ |
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| 250 | #define T_UCHAR 12 /* unsigned character */ |
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| 251 | #define T_USHORT 13 /* unsigned short */ |
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| 252 | #define T_UINT 14 /* unsigned integer */ |
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| 253 | #define T_ULONG 15 /* unsigned long */ |
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| 254 | #define T_LNGDBL 16 /* long double */ |
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| 255 | |||
| 256 | /* |
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| 257 | * derived types, in n_type |
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| 258 | */ |
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| 259 | #define DT_NON (0) /* no derived type */ |
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| 260 | #define DT_PTR (1) /* pointer */ |
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| 261 | #define DT_FCN (2) /* function */ |
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| 262 | #define DT_ARY (3) /* array */ |
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| 263 | |||
| 264 | #define BTYPE(x) ((x) & N_BTMASK) |
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| 265 | |||
| 266 | #define ISPTR(x) (((x) & N_TMASK) == (DT_PTR << N_BTSHFT)) |
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| 267 | #define ISFCN(x) (((x) & N_TMASK) == (DT_FCN << N_BTSHFT)) |
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| 268 | #define ISARY(x) (((x) & N_TMASK) == (DT_ARY << N_BTSHFT)) |
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| 269 | #define ISTAG(x) ((x)==C_STRTAG||(x)==C_UNTAG||(x)==C_ENTAG) |
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| 270 | #define DECREF(x) ((((x)>>N_TSHIFT)&~N_BTMASK)|((x)&N_BTMASK)) |
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| 271 | |||
| 272 | /********************** STORAGE CLASSES **********************/ |
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| 273 | |||
| 274 | /* This used to be defined as -1, but now n_sclass is unsigned. */ |
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| 275 | #define C_EFCN 0xff /* physical end of function */ |
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| 276 | #define C_NULL 0 |
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| 277 | #define C_AUTO 1 /* automatic variable */ |
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| 278 | #define C_EXT 2 /* external symbol */ |
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| 279 | #define C_STAT 3 /* static */ |
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| 280 | #define C_REG 4 /* register variable */ |
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| 281 | #define C_EXTDEF 5 /* external definition */ |
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| 282 | #define C_LABEL 6 /* label */ |
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| 283 | #define C_ULABEL 7 /* undefined label */ |
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| 284 | #define C_MOS 8 /* member of structure */ |
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| 285 | #define C_ARG 9 /* function argument */ |
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| 286 | #define C_STRTAG 10 /* structure tag */ |
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| 287 | #define C_MOU 11 /* member of union */ |
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| 288 | #define C_UNTAG 12 /* union tag */ |
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| 289 | #define C_TPDEF 13 /* type definition */ |
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| 290 | #define C_USTATIC 14 /* undefined static */ |
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| 291 | #define C_ENTAG 15 /* enumeration tag */ |
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| 292 | #define C_MOE 16 /* member of enumeration */ |
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| 293 | #define C_REGPARM 17 /* register parameter */ |
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| 294 | #define C_FIELD 18 /* bit field */ |
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| 295 | #define C_AUTOARG 19 /* auto argument */ |
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| 296 | #define C_LASTENT 20 /* dummy entry (end of block) */ |
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| 297 | #define C_BLOCK 100 /* ".bb" or ".eb" */ |
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| 298 | #define C_FCN 101 /* ".bf" or ".ef" */ |
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| 299 | #define C_EOS 102 /* end of structure */ |
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| 300 | #define C_FILE 103 /* file name */ |
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| 301 | #define C_LINE 104 /* line # reformatted as symbol table entry */ |
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| 302 | #define C_ALIAS 105 /* duplicate tag */ |
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| 303 | #define C_HIDDEN 106 /* ext symbol in dmert public lib */ |
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| 304 | |||
| 305 | /********************** RELOCATION DIRECTIVES **********************/ |
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| 306 | |||
| 307 | |||
| 308 | |||
| 309 | struct external_reloc { |
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| 310 | unsigned long r_vaddr __attribute__((packed)); |
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| 311 | unsigned long r_symndx __attribute__((packed)); |
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| 312 | unsigned short r_type; |
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| 313 | }; |
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| 314 | |||
| 315 | |||
| 316 | #define RELOC struct external_reloc |
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| 317 | #define RELSZ sizeof(RELOC) |
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| 318 | |||
| 319 | #define RELOC_REL32 20 /* 32-bit PC-relative address */ |
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| 320 | #define RELOC_ADDR32 6 /* 32-bit absolute address */ |
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| 321 | |||
| 322 | #define DEFAULT_DATA_SECTION_ALIGNMENT 4 |
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| 323 | #define DEFAULT_BSS_SECTION_ALIGNMENT 4 |
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| 324 | #define DEFAULT_TEXT_SECTION_ALIGNMENT 4 |
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| 325 | /* For new sections we havn't heard of before */ |
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| 326 | #define DEFAULT_SECTION_ALIGNMENT 4 |
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| 327 | |||
| 328 | #endif /* !_POSIX_SOURCE */ |
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| 329 | #endif /* !__STRICT_ANSI__ */ |
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| 330 | #endif /* !__dj_ENFORCE_ANSI_FREESTANDING */ |
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| 331 | |||
| 332 | #ifndef __dj_ENFORCE_FUNCTION_CALLS |
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| 333 | #endif /* !__dj_ENFORCE_FUNCTION_CALLS */ |
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| 334 | |||
| 335 | #ifdef __cplusplus |
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| 336 | } |
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| 337 | #endif |
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| 338 | |||
| 339 | #endif /* !__dj_include_coff_h_ */ |