include/coff-m68k.h

   1 /*** coff information for M68K */
   2
   3 /********************** FILE HEADER **********************/
   4
   5 struct external_filehdr {
   6         char f_magic[2];        /* magic number                 */
   7         char f_nscns[2];        /* number of sections           */
   8         char f_timdat[4];       /* time & date stamp            */
   9         char f_symptr[4];       /* file pointer to symtab       */
  10         char f_nsyms[4];        /* number of symtab entries     */
  11         char f_opthdr[2];       /* sizeof(optional hdr)         */
  12         char f_flags[2];        /* flags                        */
  13 };
  14
  15
  16 /* Motorola 68000/68008/68010/68020 */
  17 #define MC68MAGIC       0520
  18 #define MC68KWRMAGIC    0520    /* writeable text segments */
  19 #define MC68TVMAGIC     0521
  20 #define MC68KROMAGIC    0521    /* readonly shareable text segments */
  21 #define MC68KPGMAGIC    0522    /* demand paged text segments */
  22 #define M68MAGIC        0210
  23 #define M68TVMAGIC      0211
  24
  25 #define M68KBADMAG(x) (((x).f_magic!=MC68MAGIC) && ((x).f_magic!=MC68KWRMAGIC) && ((x).f_magic!=MC68TVMAGIC) && \
  26   ((x).f_magic!=MC68KROMAGIC) && ((x).f_magic!=MC68KPGMAGIC) && ((x).f_magic!=M68MAGIC) && ((x).f_magic!=M68TVMAGIC) )
  27
  28
  29
  30 #define FILHDR  struct external_filehdr
  31 #define FILHSZ  sizeof(FILHDR)
  32
  33
  34 /********************** AOUT "OPTIONAL HEADER" **********************/
  35
  36
  37 typedef struct
  38 {
  39   char  magic[2];               /* type of file                         */
  40   char  vstamp[2];              /* version stamp                        */
  41   char  tsize[4];               /* text size in bytes, padded to FW bdry*/
  42   char  dsize[4];               /* initialized data "  "                */
  43   char  bsize[4];               /* uninitialized data "   "             */
  44   char  entry[4];               /* entry pt.                            */
  45   char  text_start[4];          /* base of text used for this file */
  46   char  data_start[4];          /* base of data used for this file */
  47   char  tagentries[4];          /* number of tag entries to follow */
  48 }
  49 AOUTHDR;
  50
  51 #define AOUTSZ (sizeof(AOUTHDR))
  52
  53
  54
  55 /********************** SECTION HEADER **********************/
  56
  57
  58 struct external_scnhdr {
  59         char            s_name[8];      /* section name                 */
  60         char            s_paddr[4];     /* physical address, aliased s_nlib */
  61         char            s_vaddr[4];     /* virtual address              */
  62         char            s_size[4];      /* section size                 */
  63         char            s_scnptr[4];    /* file ptr to raw data for section */
  64         char            s_relptr[4];    /* file ptr to relocation       */
  65         char            s_lnnoptr[4];   /* file ptr to line numbers     */
  66         char            s_nreloc[2];    /* number of relocation entries */
  67         char            s_nlnno[2];     /* number of line number entries*/
  68         char            s_flags[4];     /* flags                        */
  69 };
  70
  71 /*
  72  * names of "special" sections
  73  */
  74 #define _TEXT   ".text"
  75 #define _DATA   ".data"
  76 #define _BSS    ".bss"
  77
  78
  79 #define SCNHDR  struct external_scnhdr
  80 #define SCNHSZ  sizeof(SCNHDR)
  81
  82
  83 /********************** LINE NUMBERS **********************/
  84
  85 /* 1 line number entry for every "breakpointable" source line in a section.
  86  * Line numbers are grouped on a per function basis; first entry in a function
  87  * grouping will have l_lnno = 0 and in place of physical address will be the
  88  * symbol table index of the function name.
  89  */
  90 struct external_lineno {
  91         union {
  92                 char l_symndx[4];       /* function name symbol index, iff l_lnno == 0*/
  93                 char l_paddr[4];        /* (physical) address of line number    */
  94         } l_addr;
  95         char l_lnno[2]; /* line number          */
  96 };
  97
  98
  99 #define LINENO  struct external_lineno
 100 #define LINESZ  sizeof(LINENO)
 101
 102
 103 /********************** SYMBOLS **********************/
 104
 105 #define E_SYMNMLEN      8       /* # characters in a symbol name        */
 106 #define E_FILNMLEN      14      /* # characters in a file name          */
 107 #define E_DIMNUM        4       /* # array dimensions in auxiliary entry */
 108
 109 struct external_syment
 110 {
 111   union {
 112     char e_name[E_SYMNMLEN];
 113     struct {
 114       char e_zeroes[4];
 115       char e_offset[4];
 116     } e;
 117   } e;
 118   char e_value[4];
 119   char e_scnum[2];
 120   char e_type[2];
 121   char e_sclass[1];
 122   char e_numaux[1];
 123 };
 124
 125
 126
 127 #define N_BTMASK        (017)
 128 #define N_TMASK         (060)
 129 #define N_BTSHFT        (4)
 130 #define N_TSHIFT        (2)
 131
 132
 133 union external_auxent {
 134         struct {
 135                 char x_tagndx[4];       /* str, un, or enum tag indx */
 136                 union {
 137                         struct {
 138                             char  x_lnno[2]; /* declaration line number */
 139                             char  x_size[2]; /* str/union/array size */
 140                         } x_lnsz;
 141                         char x_fsize[4];        /* size of function */
 142                 } x_misc;
 143                 union {
 144                         struct {                /* if ISFCN, tag, or .bb */
 145                             char x_lnnoptr[4];  /* ptr to fcn line # */
 146                             char x_endndx[4];   /* entry ndx past block end */
 147                         } x_fcn;
 148                         struct {                /* if ISARY, up to 4 dimen. */
 149                             char x_dimen[E_DIMNUM][2];
 150                         } x_ary;
 151                 } x_fcnary;
 152                 char x_tvndx[2];                /* tv index */
 153         } x_sym;
 154
 155         union {
 156                 char x_fname[E_FILNMLEN];
 157                 struct {
 158                         char x_zeroes[4];
 159                         char x_offset[4];
 160                 } x_n;
 161         } x_file;
 162
 163         struct {
 164                 char x_scnlen[4];                       /* section length */
 165                 char x_nreloc[2];       /* # relocation entries */
 166                 char x_nlinno[2];       /* # line numbers */
 167         } x_scn;
 168
 169         struct {
 170                 char x_tvfill[4];       /* tv fill value */
 171                 char x_tvlen[2];        /* length of .tv */
 172                 char x_tvran[2][2];     /* tv range */
 173         } x_tv;         /* info about .tv section (in auxent of symbol .tv)) */
 174
 175
 176 };
 177
 178 #define SYMENT  struct external_syment
 179 #define SYMESZ  18
 180 #define AUXENT  union external_auxent
 181 #define AUXESZ  18
 182
 183
 184
 185 /********************** RELOCATION DIRECTIVES **********************/
 186
 187
 188 struct external_reloc {
 189   char r_vaddr[4];
 190   char r_symndx[4];
 191   char r_type[2];
 192 };
 193
 194
 195 #define RELOC struct external_reloc
 196 #define RELSZ 10
 197
 198 #define DEFAULT_DATA_SECTION_ALIGNMENT 4
 199 #define DEFAULT_BSS_SECTION_ALIGNMENT 4
 200 #define DEFAULT_TEXT_SECTION_ALIGNMENT 4
 201 /* For new sections we havn't heard of before */
 202 #define DEFAULT_SECTION_ALIGNMENT 4