include/coff/tic30.h

   1 /*** coff information for Texas Instruments TMS320C3X */
   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 #define TIC30MAGIC      0xC000
  17
  18 #define TIC30BADMAG(x) (((x).f_magic!=TIC30MAGIC))
  19
  20 #define FILHDR  struct external_filehdr
  21 #define FILHSZ  20
  22
  23
  24 /********************** AOUT "OPTIONAL HEADER" **********************/
  25
  26
  27 typedef struct
  28 {
  29   char  magic[2];               /* type of file                         */
  30   char  vstamp[2];              /* version stamp                        */
  31   char  tsize[4];               /* text size in bytes, padded to FW bdry*/
  32   char  dsize[4];               /* initialized data "  "                */
  33   char  bsize[4];               /* uninitialized data "   "             */
  34   char  entry[4];               /* entry pt.                            */
  35   char  text_start[4];          /* base of text used for this file */
  36   char  data_start[4];          /* base of data used for this file */
  37 }
  38 AOUTHDR;
  39
  40
  41 #define AOUTHDRSZ 28
  42 #define AOUTSZ 28
  43
  44
  45
  46
  47 /********************** SECTION HEADER **********************/
  48
  49
  50 struct external_scnhdr {
  51         char            s_name[8];      /* section name                 */
  52         char            s_paddr[4];     /* physical address, aliased s_nlib */
  53         char            s_vaddr[4];     /* virtual address              */
  54         char            s_size[4];      /* section size                 */
  55         char            s_scnptr[4];    /* file ptr to raw data for section */
  56         char            s_relptr[4];    /* file ptr to relocation       */
  57         char            s_lnnoptr[4];   /* file ptr to line numbers     */
  58         char            s_nreloc[2];    /* number of relocation entries */
  59         char            s_nlnno[2];     /* number of line number entries*/
  60         char            s_flags[4];     /* flags                        */
  61 };
  62
  63 /*
  64  * names of "special" sections
  65  */
  66 #define _TEXT   ".text"
  67 #define _DATA   ".data"
  68 #define _BSS    ".bss"
  69
  70
  71 #define SCNHDR  struct external_scnhdr
  72 #define SCNHSZ  40
  73
  74
  75 /********************** LINE NUMBERS **********************/
  76
  77 /* 1 line number entry for every "breakpointable" source line in a section.
  78  * Line numbers are grouped on a per function basis; first entry in a function
  79  * grouping will have l_lnno = 0 and in place of physical address will be the
  80  * symbol table index of the function name.
  81  */
  82 struct external_lineno {
  83         union {
  84                 char l_symndx[4];       /* function name symbol index, iff l_lnno == 0*/
  85                 char l_paddr[4];        /* (physical) address of line number    */
  86         } l_addr;
  87         char l_lnno[4]; /* line number          */
  88 };
  89
  90 #define GET_LINENO_LNNO(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) (ext->l_lnno));
  91 #define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_32(abfd,val,  (bfd_byte *) (ext->l_lnno));
  92
  93 #define LINENO  struct external_lineno
  94 #define LINESZ  8
  95
  96
  97 /********************** SYMBOLS **********************/
  98
  99 #define E_SYMNMLEN      8       /* # characters in a symbol name        */
 100 #define E_FILNMLEN      14      /* # characters in a file name          */
 101 #define E_DIMNUM        4       /* # array dimensions in auxiliary entry */
 102
 103 struct external_syment
 104 {
 105   union {
 106     char e_name[E_SYMNMLEN];
 107     struct {
 108       char e_zeroes[4];
 109       char e_offset[4];
 110     } e;
 111   } e;
 112   char e_value[4];
 113   char e_scnum[2];
 114   char e_type[2];
 115   char e_sclass[1];
 116   char e_numaux[1];
 117 };
 118
 119
 120
 121 #define N_BTMASK        (017)
 122 #define N_TMASK         (060)
 123 #define N_BTSHFT        (4)
 124 #define N_TSHIFT        (2)
 125
 126
 127 union external_auxent {
 128   struct {
 129         char x_tagndx[4];       /* str, un, or enum tag indx */
 130         union {
 131           struct {
 132                 char  x_lnno[2]; /* declaration line number */
 133                 char  x_size[2]; /* str/union/array size */
 134           } x_lnsz;
 135           char x_fsize[4];      /* size of function */
 136         } x_misc;
 137         union {
 138           struct {              /* if ISFCN, tag, or .bb */
 139                 char x_lnnoptr[4];      /* ptr to fcn line # */
 140                 char x_endndx[4];       /* entry ndx past block end */
 141           } x_fcn;
 142           struct {              /* if ISARY, up to 4 dimen. */
 143                 char x_dimen[E_DIMNUM][2];
 144           } x_ary;
 145         } x_fcnary;
 146         char x_tvndx[2];                /* tv index */
 147   } x_sym;
 148
 149   union {
 150         char x_fname[E_FILNMLEN];
 151         struct {
 152           char x_zeroes[4];
 153           char x_offset[4];
 154         } x_n;
 155   } x_file;
 156
 157   struct {
 158         char x_scnlen[4];                       /* section length */
 159         char x_nreloc[2];       /* # relocation entries */
 160         char x_nlinno[2];       /* # line numbers */
 161   } x_scn;
 162
 163   struct {
 164         char x_tvfill[4];       /* tv fill value */
 165         char x_tvlen[2];        /* length of .tv */
 166         char x_tvran[2][2];     /* tv range */
 167   } x_tv;               /* info about .tv section (in auxent of symbol .tv)) */
 168
 169
 170 };
 171
 172 #define SYMENT  struct external_syment
 173 #define SYMESZ  18
 174 #define AUXENT  union external_auxent
 175 #define AUXESZ  18
 176
 177
 178
 179 /********************** RELOCATION DIRECTIVES **********************/
 180
 181 /* The external reloc has an offset field, because some of the reloc
 182    types on the z8k don't have room in the instruction for the entire
 183    offset - eg with segments */
 184
 185 struct external_reloc {
 186   char r_vaddr[4];
 187   char r_symndx[4];
 188   char r_offset[4];
 189   char r_type[2];
 190   char r_stuff[2];
 191 };
 192
 193
 194 #define RELOC struct external_reloc
 195 #define RELSZ 16
 196
 197 /* TMS320C30 relocation types.  */
 198
 199 #define R_TIC30_ABS16 0x100  /* 16 bit absolute. */
 200 #define R_TIC30_ABS24 0x101  /* 24 bit absolute. */
 201 #define R_TIC30_ABS32 0x102  /* 32 bit absolute. */
 202 #define R_TIC30_LDP   0x103  /* LDP bits 23-16 to 7-0. */
 203 #define R_TIC30_PC16  0x104  /* 16 bit pc relative. */