include/coff/we32k.h

   1 /*** coff information for we32k */
   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 /* Bits for f_flags:
  17  *      F_RELFLG        relocation info stripped from file
  18  *      F_EXEC          file is executable (no unresolved external references)
  19  *      F_LNNO          line numbers stripped from file
  20  *      F_LSYMS         local symbols stripped from file
  21  *      F_AR32WR        file has byte ordering of an AR32WR machine (e.g. vax)
  22  */
  23
  24 #define F_RELFLG        (0x0001)
  25 #define F_EXEC          (0x0002)
  26 #define F_LNNO          (0x0004)
  27 #define F_LSYMS         (0x0008)
  28 #define F_BM32B         (0020000)
  29 #define F_BM32MAU       (0040000)
  30
  31 #define WE32KMAGIC      0x170   /* we32k sans transfer vector */
  32 #define FBOMAGIC        0x170   /* we32k sans transfer vector */
  33 #define MTVMAGIC        0x171   /* we32k with transfer vector */
  34 #define RBOMAGIC        0x172   /* reserved */
  35 #define WE32KBADMAG(x) (((x).f_magic != WE32KMAGIC) \
  36                         && ((x).f_magic != FBOMAGIC) \
  37                         && ((x).f_magic != RBOMAGIC) \
  38                         && ((x).f_magic != MTVMAGIC))
  39
  40 #define FILHDR  struct external_filehdr
  41 #define FILHSZ  20
  42
  43
  44 /********************** AOUT "OPTIONAL HEADER" **********************/
  45
  46
  47 typedef struct
  48 {
  49   char  magic[2];               /* type of file                         */
  50   char  vstamp[2];              /* version stamp                        */
  51   char  tsize[4];               /* text size in bytes, padded to FW bdry*/
  52   char  dsize[4];               /* initialized data "  "                */
  53   char  bsize[4];               /* uninitialized data "   "             */
  54   char  entry[4];               /* entry pt.                            */
  55   char  text_start[4];          /* base of text used for this file */
  56   char  data_start[4];          /* base of data used for this file */
  57 }
  58 AOUTHDR;
  59
  60 #define AOUTSZ 28
  61 #define AOUTHDRSZ 28
  62
  63 /********************** SECTION HEADER **********************/
  64
  65
  66 struct external_scnhdr {
  67         char            s_name[8];      /* section name                 */
  68         char            s_paddr[4];     /* physical address, aliased s_nlib */
  69         char            s_vaddr[4];     /* virtual address              */
  70         char            s_size[4];      /* section size                 */
  71         char            s_scnptr[4];    /* file ptr to raw data for section */
  72         char            s_relptr[4];    /* file ptr to relocation       */
  73         char            s_lnnoptr[4];   /* file ptr to line numbers     */
  74         char            s_nreloc[2];    /* number of relocation entries */
  75         char            s_nlnno[2];     /* number of line number entries*/
  76         char            s_flags[4];     /* flags                        */
  77 };
  78
  79 #define SCNHDR  struct external_scnhdr
  80 #define SCNHSZ  40
  81
  82 /*
  83  * names of "special" sections
  84  */
  85 #define _TEXT   ".text"
  86 #define _DATA   ".data"
  87 #define _BSS    ".bss"
  88 #define _TV     ".tv"
  89 #define _INIT   ".init"
  90 #define _FINI   ".fini"
  91
  92 /********************** LINE NUMBERS **********************/
  93
  94 /* 1 line number entry for every "breakpointable" source line in a section.
  95  * Line numbers are grouped on a per function basis; first entry in a function
  96  * grouping will have l_lnno = 0 and in place of physical address will be the
  97  * symbol table index of the function name.
  98  */
  99 struct external_lineno {
 100         union {
 101                 char l_symndx[4];       /* function name symbol index, iff l_lnno == 0*/
 102                 char l_paddr[4];        /* (physical) address of line number    */
 103         } l_addr;
 104         char l_lnno[2]; /* line number          */
 105 };
 106
 107
 108 #define LINENO  struct external_lineno
 109 #define LINESZ  6
 110
 111
 112 /********************** SYMBOLS **********************/
 113
 114 #define E_SYMNMLEN      8       /* # characters in a symbol name        */
 115 #define E_FILNMLEN      14      /* # characters in a file name          */
 116 #define E_DIMNUM        4       /* # array dimensions in auxiliary entry */
 117
 118 struct external_syment
 119 {
 120   union {
 121     char e_name[E_SYMNMLEN];
 122     struct {
 123       char e_zeroes[4];
 124       char e_offset[4];
 125     } e;
 126   } e;
 127   char e_value[4];
 128   char e_scnum[2];
 129   char e_type[2];
 130   char e_sclass[1];
 131   char e_numaux[1];
 132 };
 133
 134 #define N_BTMASK        (0xf)
 135 #define N_TMASK         (0x30)
 136 #define N_BTSHFT        (4)
 137 #define N_TSHIFT        (2)
 138
 139 union external_auxent {
 140         struct {
 141                 char x_tagndx[4];       /* str, un, or enum tag indx */
 142                 union {
 143                         struct {
 144                             char  x_lnno[2]; /* declaration line number */
 145                             char  x_size[2]; /* str/union/array size */
 146                         } x_lnsz;
 147                         char x_fsize[4];        /* size of function */
 148                 } x_misc;
 149                 union {
 150                         struct {                /* if ISFCN, tag, or .bb */
 151                             char x_lnnoptr[4];  /* ptr to fcn line # */
 152                             char x_endndx[4];   /* entry ndx past block end */
 153                         } x_fcn;
 154                         struct {                /* if ISARY, up to 4 dimen. */
 155                             char x_dimen[E_DIMNUM][2];
 156                         } x_ary;
 157                 } x_fcnary;
 158                 char x_tvndx[2];                /* tv index */
 159         } x_sym;
 160
 161         union {
 162                 char x_fname[E_FILNMLEN];
 163                 struct {
 164                         char x_zeroes[4];
 165                         char x_offset[4];
 166                 } x_n;
 167         } x_file;
 168
 169         struct {
 170                 char x_scnlen[4];                       /* section length */
 171                 char x_nreloc[2];       /* # relocation entries */
 172                 char x_nlinno[2];       /* # line numbers */
 173         } x_scn;
 174
 175         struct {
 176                 char x_tvfill[4];       /* tv fill value */
 177                 char x_tvlen[2];        /* length of .tv */
 178                 char x_tvran[2][2];     /* tv range */
 179         } x_tv;         /* info about .tv section (in auxent of symbol .tv)) */
 180
 181
 182 };
 183
 184 #define SYMENT  struct external_syment
 185 #define SYMESZ  18
 186 #define AUXENT  union external_auxent
 187 #define AUXESZ  18
 188
 189
 190 #       define _ETEXT   "etext"
 191
 192
 193 /********************** RELOCATION DIRECTIVES **********************/
 194
 195
 196
 197 struct external_reloc {
 198   char r_vaddr[4];
 199   char r_symndx[4];
 200   char r_type[2];
 201 };
 202
 203
 204 #define RELOC struct external_reloc
 205 #define RELSZ 10
 206