include/coff/tic80.h

   1 /*** coff information for TI TMS320C80 (MVP) */
   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         char f_target_id[2];    /* target id (TIc80 specific)   */
  14 };
  15
  16 #define TIC80_ARCH_MAGIC        0x0C1   /* Goes in the file header magic number field */
  17 #define TIC80_TARGET_ID         0x95    /* Goes in the target id field */
  18
  19 #define TIC80BADMAG(x) ((x).f_magic != TIC80_ARCH_MAGIC)
  20
  21 #define FILHDR  struct external_filehdr
  22 #define FILHSZ  22
  23
  24
  25 /********************** AOUT "OPTIONAL HEADER" **********************/
  26
  27
  28 typedef struct
  29 {
  30   char  magic[2];               /* type of file                         */
  31   char  vstamp[2];              /* version stamp                        */
  32   char  tsize[4];               /* text size in bytes, padded to FW bdry*/
  33   char  dsize[4];               /* initialized data "  "                */
  34   char  bsize[4];               /* uninitialized data "   "             */
  35   char  entry[4];               /* entry pt.                            */
  36   char  text_start[4];          /* base of text used for this file */
  37   char  data_start[4];          /* base of data used for this file */
  38 }
  39 AOUTHDR;
  40
  41 #define TIC80_AOUTHDR_MAGIC     0x108   /* Goes in the optional file header magic number field */
  42
  43 #define AOUTHDRSZ 28
  44 #define AOUTSZ 28
  45
  46
  47
  48
  49 /********************** SECTION HEADER **********************/
  50
  51
  52 struct external_scnhdr {
  53         char            s_name[8];      /* section name                 */
  54         char            s_paddr[4];     /* physical address, aliased s_nlib */
  55         char            s_vaddr[4];     /* virtual address              */
  56         char            s_size[4];      /* section size                 */
  57         char            s_scnptr[4];    /* file ptr to raw data for section */
  58         char            s_relptr[4];    /* file ptr to relocation       */
  59         char            s_lnnoptr[4];   /* file ptr to line numbers     */
  60         char            s_nreloc[2];    /* number of relocation entries */
  61         char            s_nlnno[2];     /* number of line number entries*/
  62         char            s_flags[2];     /* flags                        */
  63         char            s_reserved[1];  /* reserved (TIc80 specific)    */
  64         char            s_mempage[1];   /* memory page number (TIc80)   */
  65 };
  66
  67 /*
  68  * names of "special" sections
  69  */
  70 #define _TEXT   ".text"
  71 #define _DATA   ".data"
  72 #define _BSS    ".bss"
  73 #define _CINIT  ".cinit"
  74 #define _CONST  ".const"
  75 #define _SWITCH ".switch"
  76 #define _STACK  ".stack"
  77 #define _SYSMEM ".sysmem"
  78
  79
  80 #define SCNHDR  struct external_scnhdr
  81 #define SCNHSZ  40
  82
  83
  84 /********************** LINE NUMBERS **********************/
  85
  86 /* 1 line number entry for every "breakpointable" source line in a section.
  87  * Line numbers are grouped on a per function basis; first entry in a function
  88  * grouping will have l_lnno = 0 and in place of physical address will be the
  89  * symbol table index of the function name.
  90  */
  91 struct external_lineno {
  92         union {
  93                 char l_symndx[4];       /* function name symbol index, iff l_lnno == 0*/
  94                 char l_paddr[4];        /* (physical) address of line number    */
  95         } l_addr;
  96         char l_lnno[2];                 /* line number  */
  97 };
  98
  99 #define GET_LINENO_LNNO(abfd, ext) bfd_h_get_16(abfd, (bfd_byte *) (ext->l_lnno));
 100 #define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_16(abfd,val,  (bfd_byte *) (ext->l_lnno));
 101
 102 #define LINENO  struct external_lineno
 103 #define LINESZ  6
 104
 105
 106 /********************** SYMBOLS **********************/
 107
 108 #define E_SYMNMLEN      8       /* # characters in a symbol name        */
 109 #define E_FILNMLEN      14      /* # characters in a file name          */
 110 #define E_DIMNUM        4       /* # array dimensions in auxiliary entry */
 111
 112 struct external_syment
 113 {
 114   union {
 115     char e_name[E_SYMNMLEN];
 116     struct {
 117       char e_zeroes[4];
 118       char e_offset[4];
 119     } e;
 120   } e;
 121   char e_value[4];
 122   char e_scnum[2];
 123   char e_type[2];
 124   char e_sclass[1];
 125   char e_numaux[1];
 126 };
 127
 128
 129
 130 #define N_BTMASK        (017)
 131 #define N_TMASK         (060)
 132 #define N_BTSHFT        (4)
 133 #define N_TSHIFT        (2)
 134
 135 /* FIXME - need to correlate with TIc80 Code Generation Tools User's Guide, CG:A-25 */
 136 union external_auxent {
 137         struct {
 138                 char x_tagndx[4];       /* str, un, or enum tag indx */
 139                 union {
 140                         struct {
 141                             char  x_lnno[2]; /* declaration line number */
 142                             char  x_size[2]; /* str/union/array size */
 143                         } x_lnsz;
 144                         char x_fsize[4];        /* size of function */
 145                 } x_misc;
 146                 union {
 147                         struct {                /* if ISFCN, tag, or .bb */
 148                             char x_lnnoptr[4];  /* ptr to fcn line # */
 149                             char x_endndx[4];   /* entry ndx past block end */
 150                         } x_fcn;
 151                         struct {                /* if ISARY, up to 4 dimen. */
 152                             char x_dimen[E_DIMNUM][2];
 153                         } x_ary;
 154                 } x_fcnary;
 155                 char x_tvndx[2];                /* tv index */
 156         } x_sym;
 157
 158         union {
 159                 char x_fname[E_FILNMLEN];
 160                 struct {
 161                         char x_zeroes[4];
 162                         char x_offset[4];
 163                 } x_n;
 164         } x_file;
 165
 166         struct {
 167                 char x_scnlen[4];                       /* section length */
 168                 char x_nreloc[2];       /* # relocation entries */
 169                 char x_nlinno[2];       /* # line numbers */
 170         } x_scn;
 171
 172         struct {
 173                 char x_tvfill[4];       /* tv fill value */
 174                 char x_tvlen[2];        /* length of .tv */
 175                 char x_tvran[2][2];     /* tv range */
 176         } x_tv;         /* info about .tv section (in auxent of symbol .tv)) */
 177
 178
 179 };
 180
 181 #define SYMENT  struct external_syment
 182 #define SYMESZ  18
 183 #define AUXENT  union external_auxent
 184 #define AUXESZ  18
 185
 186
 187
 188 /********************** RELOCATION DIRECTIVES **********************/
 189
 190 /* The external reloc has an offset field, because some of the reloc
 191    types on the h8 don't have room in the instruction for the entire
 192    offset - eg the strange jump and high page addressing modes */
 193
 194 struct external_reloc {
 195   char r_vaddr[4];
 196   char r_symndx[4];
 197   char r_reserved[2];
 198   char r_type[2];
 199 };
 200
 201
 202 #define RELOC struct external_reloc
 203 #define RELSZ 12
 204
 205 /* TIc80 relocation types. */
 206
 207 #define R_ABS           0x00            /* Absolute address - no relocation */
 208 #define R_RELLONGX      0x11            /* PP: 32 bits, direct */
 209 #define R_PPBASE        0x34            /* PP: Global base address type */
 210 #define R_PPLBASE       0x35            /* PP: Local base address type */
 211 #define R_PP15          0x38            /* PP: Global 15 bit offset */
 212 #define R_PP15W         0x39            /* PP: Global 15 bit offset divided by 4 */
 213 #define R_PP15H         0x3A            /* PP: Global 15 bit offset divided by 2 */
 214 #define R_PP16B         0x3B            /* PP: Global 16 bit offset for bytes */
 215 #define R_PPL15         0x3C            /* PP: Local 15 bit offset */
 216 #define R_PPL15W        0x3D            /* PP: Local 15 bit offset divided by 4 */
 217 #define R_PPL15H        0x3E            /* PP: Local 15 bit offset divided by 2 */
 218 #define R_PPL16B        0x3F            /* PP: Local 16 bit offset for bytes */
 219 #define R_PPN15         0x40            /* PP: Global 15 bit negative offset */
 220 #define R_PPN15W        0x41            /* PP: Global 15 bit negative offset divided by 4 */
 221 #define R_PPN15H        0x42            /* PP: Global 15 bit negative offset divided by 2 */
 222 #define R_PPN16B        0x43            /* PP: Global 16 bit negative byte offset */
 223 #define R_PPLN15        0x44            /* PP: Local 15 bit negative offset */
 224 #define R_PPLN15W       0x45            /* PP: Local 15 bit negative offset divided by 4 */
 225 #define R_PPLN15H       0x46            /* PP: Local 15 bit negative offset divided by 2 */
 226 #define R_PPLN16B       0x47            /* PP: Local 16 bit negative byte offset */
 227 #define R_MPPCR15W      0x4E            /* MP: 15 bit PC-relative divided by 4 */
 228 #define R_MPPCR         0x4F            /* MP: 32 bit PC-relative divided by 4 */