include/coff/i960.h

   1 /*** coff information for 80960.  Origins: Intel corp, natch. */
   2
   3 /* NOTE: Tagentries (cf TAGBITS) are no longer used by the 960 */
   4
   5 /********************** FILE HEADER **********************/
   6
   7 struct external_filehdr {
   8         char f_magic[2];        /* magic number                 */
   9         char f_nscns[2];        /* number of sections           */
  10         char f_timdat[4];       /* time & date stamp            */
  11         char f_symptr[4];       /* file pointer to symtab       */
  12         char f_nsyms[4];        /* number of symtab entries     */
  13         char f_opthdr[2];       /* sizeof(optional hdr)         */
  14         char f_flags[2];        /* flags                        */
  15 };
  16
  17 #define OMAGIC      (0407)      /* old impure format. data immediately
  18                                    follows text. both sections are rw. */
  19 #define NMAGIC      (0410)      /* split i&d, read-only text */
  20
  21 /*
  22 *       Intel 80960 (I960) processor flags.
  23 *       F_I960TYPE == mask for processor type field.
  24 */
  25
  26 #define F_I960TYPE      (0xf000)
  27 #define F_I960CORE      (0x1000)
  28 #define F_I960KB        (0x2000)
  29 #define F_I960SB        (0x2000)
  30 #define F_I960MC        (0x3000)
  31 #define F_I960XA        (0x4000)
  32 #define F_I960CA        (0x5000)
  33 #define F_I960KA        (0x6000)
  34 #define F_I960SA        (0x6000)
  35 /* start-sanitize-i960xl */
  36 #define F_I960XL        (0x7000)
  37 /* end-sanitize-i960xl */
  38 #define F_I960HX        (0x8000)
  39
  40
  41 /** i80960 Magic Numbers
  42 */
  43
  44 #define I960ROMAGIC     (0x160) /* read-only text segments */
  45 #define I960RWMAGIC     (0x161) /* read-write text segments */
  46
  47 #define I960BADMAG(x) (((x).f_magic!=I960ROMAGIC) && ((x).f_magic!=I960RWMAGIC))
  48
  49 #define FILHDR  struct external_filehdr
  50 #define FILHSZ  20
  51
  52 /********************** AOUT "OPTIONAL HEADER" **********************/
  53
  54 typedef struct {
  55         unsigned long   phys_addr;
  56         unsigned long   bitarray;
  57 } TAGBITS;
  58
  59
  60
  61 typedef struct
  62 {
  63   char  magic[2];               /* type of file                         */
  64   char  vstamp[2];              /* version stamp                        */
  65   char  tsize[4];               /* text size in bytes, padded to FW bdry*/
  66   char  dsize[4];               /* initialized data "  "                */
  67   char  bsize[4];               /* uninitialized data "   "             */
  68   char  entry[4];               /* entry pt.                            */
  69   char  text_start[4];          /* base of text used for this file */
  70   char  data_start[4];          /* base of data used for this file */
  71   char  tagentries[4];          /* number of tag entries to follow */
  72 }
  73 AOUTHDR;
  74
  75 /* return a pointer to the tag bits array */
  76
  77 #define TAGPTR(aout) ((TAGBITS *) (&(aout.tagentries)+1))
  78
  79 /* compute size of a header */
  80
  81 /*#define AOUTSZ(aout) (sizeof(AOUTHDR)+(aout.tagentries*sizeof(TAGBITS)))*/
  82 #define AOUTSZ (sizeof(AOUTHDR))
  83
  84
  85
  86 /********************** SECTION HEADER **********************/
  87
  88
  89 struct external_scnhdr {
  90         char            s_name[8];      /* section name                 */
  91         char            s_paddr[4];     /* physical address, aliased s_nlib */
  92         char            s_vaddr[4];     /* virtual address              */
  93         char            s_size[4];      /* section size                 */
  94         char            s_scnptr[4];    /* file ptr to raw data for section */
  95         char            s_relptr[4];    /* file ptr to relocation       */
  96         char            s_lnnoptr[4];   /* file ptr to line numbers     */
  97         char            s_nreloc[2];    /* number of relocation entries */
  98         char            s_nlnno[2];     /* number of line number entries*/
  99         char            s_flags[4];     /* flags                        */
 100         char            s_align[4];     /* section alignment            */
 101 };
 102
 103
 104 #define SCNHDR  struct external_scnhdr
 105 #define SCNHSZ  sizeof(SCNHDR)
 106
 107 /*
 108  * names of "special" sections
 109  */
 110 #define _TEXT   ".text"
 111 #define _DATA   ".data"
 112 #define _BSS    ".bss"
 113
 114 /********************** LINE NUMBERS **********************/
 115
 116 /* 1 line number entry for every "breakpointable" source line in a section.
 117  * Line numbers are grouped on a per function basis; first entry in a function
 118  * grouping will have l_lnno = 0 and in place of physical address will be the
 119  * symbol table index of the function name.
 120  */
 121 struct external_lineno {
 122         union {
 123                 char l_symndx[4];       /* function name symbol index, iff l_lnno == 0*/
 124                 char l_paddr[4];        /* (physical) address of line number    */
 125         } l_addr;
 126         char l_lnno[2];         /* line number          */
 127         char padding[2];        /* force alignment      */
 128 };
 129
 130
 131 #define LINENO  struct external_lineno
 132 #define LINESZ  8
 133
 134
 135 /********************** SYMBOLS **********************/
 136
 137 #define E_SYMNMLEN      8       /* # characters in a symbol name        */
 138 #define E_FILNMLEN      14      /* # characters in a file name          */
 139 #define E_DIMNUM        4       /* # array dimensions in auxiliary entry */
 140
 141 struct external_syment
 142 {
 143   union {
 144     char e_name[E_SYMNMLEN];
 145     struct {
 146       char e_zeroes[4];
 147       char e_offset[4];
 148     } e;
 149   } e;
 150   char e_value[4];
 151   char e_scnum[2];
 152   char e_flags[2];
 153   char e_type[4];
 154   char e_sclass[1];
 155   char e_numaux[1];
 156   char pad2[2];
 157 };
 158
 159
 160
 161
 162 #define N_BTMASK        (0x1f)
 163 #define N_TMASK         (0x60)
 164 #define N_BTSHFT        (5)
 165 #define N_TSHIFT        (2)
 166
 167 union external_auxent {
 168         struct {
 169                 char x_tagndx[4];       /* str, un, or enum tag indx */
 170                 union {
 171                         struct {
 172                             char  x_lnno[2]; /* declaration line number */
 173                             char  x_size[2]; /* str/union/array size */
 174                         } x_lnsz;
 175                         char x_fsize[4];        /* size of function */
 176                 } x_misc;
 177                 union {
 178                         struct {                /* if ISFCN, tag, or .bb */
 179                             char x_lnnoptr[4];  /* ptr to fcn line # */
 180                             char x_endndx[4];   /* entry ndx past block end */
 181                         } x_fcn;
 182                         struct {                /* if ISARY, up to 4 dimen. */
 183                             char x_dimen[E_DIMNUM][2];
 184                         } x_ary;
 185                 } x_fcnary;
 186                 char x_tvndx[2];                /* tv index */
 187         } x_sym;
 188
 189         union {
 190                 char x_fname[E_FILNMLEN];
 191                 struct {
 192                         char x_zeroes[4];
 193                         char x_offset[4];
 194                 } x_n;
 195         } x_file;
 196
 197         struct {
 198                 char x_scnlen[4];                       /* section length */
 199                 char x_nreloc[2];       /* # relocation entries */
 200                 char x_nlinno[2];       /* # line numbers */
 201         } x_scn;
 202
 203         struct {
 204                 char x_tvfill[4];       /* tv fill value */
 205                 char x_tvlen[2];        /* length of .tv */
 206                 char x_tvran[2][2];     /* tv range */
 207         } x_tv;         /* info about .tv section (in auxent of symbol .tv)) */
 208
 209         /******************************************
 210          *  I960-specific *2nd* aux. entry formats
 211          ******************************************/
 212         struct {
 213           /* This is a very old typo that keeps getting propagated. */
 214 #define x_stdindx x_stindx
 215                 char x_stindx[4];       /* sys. table entry */
 216         } x_sc; /* system call entry */
 217
 218         struct {
 219                 char x_balntry[4]; /* BAL entry point */
 220         } x_bal; /* BAL-callable function */
 221
 222         struct {
 223                 char x_timestamp[4];            /* time stamp */
 224                 char    x_idstring[20];         /* producer identity string */
 225         } x_ident;                              /* Producer ident info */
 226
 227 };
 228
 229
 230
 231 #define SYMENT  struct external_syment
 232 #define SYMESZ  sizeof(SYMENT)                  /* FIXME - calc by hand */
 233 #define AUXENT  union external_auxent
 234 #define AUXESZ  sizeof(AUXENT)                  /* FIXME - calc by hand */
 235
 236 #       define _ETEXT   "_etext"
 237
 238 /********************** RELOCATION DIRECTIVES **********************/
 239
 240 struct external_reloc {
 241   char r_vaddr[4];
 242   char r_symndx[4];
 243   char r_type[2];
 244   char pad[2];
 245 };
 246
 247
 248 /* Relevent values for r_type and i960.  Would someone please document them */
 249
 250
 251 #define RELOC struct external_reloc
 252 #define RELSZ 12
 253