include/coff/h8300.h

   1 /*** coff information for Hitachi H8/300 */
   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
  17 #define H8300MAGIC      0x8300
  18
  19
  20 #define H8300BADMAG(x) (((x).f_magic!=H8300MAGIC))
  21
  22 #define FILHDR  struct external_filehdr
  23 #define FILHSZ  sizeof(FILHDR)
  24
  25
  26 /********************** AOUT "OPTIONAL HEADER" **********************/
  27
  28
  29 typedef struct
  30 {
  31   char  magic[2];               /* type of file                         */
  32   char  vstamp[2];              /* version stamp                        */
  33   char  tsize[4];               /* text size in bytes, padded to FW bdry*/
  34   char  dsize[4];               /* initialized data "  "                */
  35   char  bsize[4];               /* uninitialized data "   "             */
  36   char  entry[4];               /* entry pt.                            */
  37   char  text_start[4];          /* base of text used for this file */
  38   char  data_start[4];          /* base of data used for this file */
  39 }
  40 AOUTHDR;
  41
  42
  43 #define AOUTHDRSZ (sizeof(AOUTHDR))
  44 #define AOUTSZ (sizeof(AOUTHDR))
  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[4];     /* flags                        */
  63 };
  64
  65 /*
  66  * names of "special" sections
  67  */
  68 #define _TEXT   ".text"
  69 #define _DATA   ".data"
  70 #define _BSS    ".bss"
  71
  72
  73 #define SCNHDR  struct external_scnhdr
  74 #define SCNHSZ  sizeof(SCNHDR)
  75
  76
  77 /********************** LINE NUMBERS **********************/
  78
  79 /* 1 line number entry for every "breakpointable" source line in a section.
  80  * Line numbers are grouped on a per function basis; first entry in a function
  81  * grouping will have l_lnno = 0 and in place of physical address will be the
  82  * symbol table index of the function name.
  83  */
  84 struct external_lineno {
  85         union {
  86                 char l_symndx[4];       /* function name symbol index, iff l_lnno == 0*/
  87                 char l_paddr[4];        /* (physical) address of line number    */
  88         } l_addr;
  89         char l_lnno[2]; /* line number          */
  90 };
  91
  92
  93 #define LINENO  struct external_lineno
  94 #define LINESZ  sizeof(LINENO)
  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 h8 don't have room in the instruction for the entire
 183    offset - eg the strange jump and high page addressing modes */
 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 #define DEFAULT_DATA_SECTION_ALIGNMENT 4
 198 #define DEFAULT_BSS_SECTION_ALIGNMENT 4
 199 #define DEFAULT_TEXT_SECTION_ALIGNMENT 4
 200 /* For new sections we havn't heard of before */
 201 #define DEFAULT_SECTION_ALIGNMENT 4