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