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
  36
  37 /** i80960 Magic Numbers
  38 */
  39
  40 #define I960ROMAGIC     (0x160) /* read-only text segments */
  41 #define I960RWMAGIC     (0x161) /* read-write text segments */
  42
  43 #define I960BADMAG(x) (((x).f_magic!=I960ROMAGIC) && ((x).f_magic!=I960RWMAGIC))
  44
  45 #define FILHDR  struct external_filehdr
  46 #define FILHSZ  20
  47
  48 /********************** AOUT "OPTIONAL HEADER" **********************/
  49
  50 typedef struct {
  51         unsigned long   phys_addr;
  52         unsigned long   bitarray;
  53 } TAGBITS;
  54
  55
  56
  57 typedef struct
  58 {
  59   char  magic[2];               /* type of file                         */
  60   char  vstamp[2];              /* version stamp                        */
  61   char  tsize[4];               /* text size in bytes, padded to FW bdry*/
  62   char  dsize[4];               /* initialized data "  "                */
  63   char  bsize[4];               /* uninitialized data "   "             */
  64   char  entry[4];               /* entry pt.                            */
  65   char  text_start[4];          /* base of text used for this file */
  66   char  data_start[4];          /* base of data used for this file */
  67   char  tagentries[4];          /* number of tag entries to follow */
  68 }
  69 AOUTHDR;
  70
  71 /* return a pointer to the tag bits array */
  72
  73 #define TAGPTR(aout) ((TAGBITS *) (&(aout.tagentries)+1))
  74
  75 /* compute size of a header */
  76
  77 /*#define AOUTSZ(aout) (sizeof(AOUTHDR)+(aout.tagentries*sizeof(TAGBITS)))*/
  78 #define AOUTSZ (sizeof(AOUTHDR))
  79
  80
  81
  82 /********************** SECTION HEADER **********************/
  83
  84
  85 struct external_scnhdr {
  86         char            s_name[8];      /* section name                 */
  87         char            s_paddr[4];     /* physical address, aliased s_nlib */
  88         char            s_vaddr[4];     /* virtual address              */
  89         char            s_size[4];      /* section size                 */
  90         char            s_scnptr[4];    /* file ptr to raw data for section */
  91         char            s_relptr[4];    /* file ptr to relocation       */
  92         char            s_lnnoptr[4];   /* file ptr to line numbers     */
  93         char            s_nreloc[2];    /* number of relocation entries */
  94         char            s_nlnno[2];     /* number of line number entries*/
  95         char            s_flags[4];     /* flags                        */
  96         char            s_align[4];     /* section alignment            */
  97 };
  98
  99
 100 #define SCNHDR  struct external_scnhdr
 101 #define SCNHSZ  sizeof(SCNHDR)
 102
 103 /*
 104  * names of "special" sections
 105  */
 106 #define _TEXT   ".text"
 107 #define _DATA   ".data"
 108 #define _BSS    ".bss"
 109
 110 /********************** LINE NUMBERS **********************/
 111
 112 /* 1 line number entry for every "breakpointable" source line in a section.
 113  * Line numbers are grouped on a per function basis; first entry in a function
 114  * grouping will have l_lnno = 0 and in place of physical address will be the
 115  * symbol table index of the function name.
 116  */
 117 struct external_lineno {
 118         union {
 119                 char l_symndx[4];       /* function name symbol index, iff l_lnno == 0*/
 120                 char l_paddr[4];        /* (physical) address of line number    */
 121         } l_addr;
 122         char l_lnno[2];         /* line number          */
 123         char padding[2];        /* force alignment      */
 124 };
 125
 126
 127 #define LINENO  struct external_lineno
 128 #define LINESZ  8
 129
 130
 131 /********************** SYMBOLS **********************/
 132
 133 #define E_SYMNMLEN      8       /* # characters in a symbol name        */
 134 #define E_FILNMLEN      14      /* # characters in a file name          */
 135 #define E_DIMNUM        4       /* # array dimensions in auxiliary entry */
 136
 137 struct external_syment
 138 {
 139   union {
 140     char e_name[E_SYMNMLEN];
 141     struct {
 142       char e_zeroes[4];
 143       char e_offset[4];
 144     } e;
 145   } e;
 146   char e_value[4];
 147   char e_scnum[2];
 148   char e_flags[2];
 149   char e_type[4];
 150   char e_sclass[1];
 151   char e_numaux[1];
 152   char pad2[2];
 153 };
 154
 155
 156
 157
 158 #define N_BTMASK        (0x1f)
 159 #define N_TMASK         (0x60)
 160 #define N_BTSHFT        (5)
 161 #define N_TSHIFT        (2)
 162
 163 union external_auxent {
 164         struct {
 165                 char x_tagndx[4];       /* str, un, or enum tag indx */
 166                 union {
 167                         struct {
 168                             char  x_lnno[2]; /* declaration line number */
 169                             char  x_size[2]; /* str/union/array size */
 170                         } x_lnsz;
 171                         char x_fsize[4];        /* size of function */
 172                 } x_misc;
 173                 union {
 174                         struct {                /* if ISFCN, tag, or .bb */
 175                             char x_lnnoptr[4];  /* ptr to fcn line # */
 176                             char x_endndx[4];   /* entry ndx past block end */
 177                         } x_fcn;
 178                         struct {                /* if ISARY, up to 4 dimen. */
 179                             char x_dimen[E_DIMNUM][2];
 180                         } x_ary;
 181                 } x_fcnary;
 182                 char x_tvndx[2];                /* tv index */
 183         } x_sym;
 184
 185         union {
 186                 char x_fname[E_FILNMLEN];
 187                 struct {
 188                         char x_zeroes[4];
 189                         char x_offset[4];
 190                 } x_n;
 191         } x_file;
 192
 193         struct {
 194                 char x_scnlen[4];                       /* section length */
 195                 char x_nreloc[2];       /* # relocation entries */
 196                 char x_nlinno[2];       /* # line numbers */
 197         } x_scn;
 198
 199         struct {
 200                 char x_tvfill[4];       /* tv fill value */
 201                 char x_tvlen[2];        /* length of .tv */
 202                 char x_tvran[2][2];     /* tv range */
 203         } x_tv;         /* info about .tv section (in auxent of symbol .tv)) */
 204
 205         /******************************************
 206          *  I960-specific *2nd* aux. entry formats
 207          ******************************************/
 208         struct {
 209           /* This is a very old typo that keeps getting propagated. */
 210 #define x_stdindx x_stindx
 211                 char x_stindx[4];       /* sys. table entry */
 212         } x_sc; /* system call entry */
 213
 214         struct {
 215                 char x_balntry[4]; /* BAL entry point */
 216         } x_bal; /* BAL-callable function */
 217
 218         struct {
 219                 char x_timestamp[4];            /* time stamp */
 220                 char    x_idstring[20];         /* producer identity string */
 221         } x_ident;                              /* Producer ident info */
 222
 223 };
 224
 225
 226
 227 #define SYMENT  struct external_syment
 228 #define SYMESZ  sizeof(SYMENT)                  /* FIXME - calc by hand */
 229 #define AUXENT  union external_auxent
 230 #define AUXESZ  sizeof(AUXENT)                  /* FIXME - calc by hand */
 231
 232 #       define _ETEXT   "_etext"
 233
 234 /********************** RELOCATION DIRECTIVES **********************/
 235
 236 struct external_reloc {
 237   char r_vaddr[4];
 238   char r_symndx[4];
 239   char r_type[2];
 240   char pad[2];
 241 };
 242
 243
 244 /* Relevent values for r_type and i960.  Would someone please document them */
 245
 246
 247 #define RELOC struct external_reloc
 248 #define RELSZ 12
 249
 250 #define DEFAULT_DATA_SECTION_ALIGNMENT 4
 251 #define DEFAULT_BSS_SECTION_ALIGNMENT 4
 252 #define DEFAULT_TEXT_SECTION_ALIGNMENT 16
 253 /* For new sections we havn't heard of before */
 254 #define DEFAULT_SECTION_ALIGNMENT 4