include/coff/z8k.h

   1 /*** coff information for Zilog Z800N */
   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 /* Type of cpu is stored in flags */
  17 #define F_Z8001    0x1000
  18 #define F_Z8002    0x2000
  19 #define F_MACHMASK 0xf000
  20
  21 #define Z8KMAGIC        0x8000
  22
  23 #define Z8KBADMAG(x) (((x).f_magic!=Z8KMAGIC))
  24
  25 #define FILHDR  struct external_filehdr
  26 #define FILHSZ  sizeof(FILHDR)
  27
  28
  29 /********************** AOUT "OPTIONAL HEADER" **********************/
  30
  31
  32 typedef struct
  33 {
  34   char  magic[2];               /* type of file                         */
  35   char  vstamp[2];              /* version stamp                        */
  36   char  tsize[4];               /* text size in bytes, padded to FW bdry*/
  37   char  dsize[4];               /* initialized data "  "                */
  38   char  bsize[4];               /* uninitialized data "   "             */
  39   char  entry[4];               /* entry pt.                            */
  40   char  text_start[4];          /* base of text used for this file */
  41   char  data_start[4];          /* base of data used for this file */
  42 }
  43 AOUTHDR;
  44
  45
  46 #define AOUTHDRSZ (sizeof(AOUTHDR))
  47 #define AOUTSZ (sizeof(AOUTHDR))
  48
  49
  50
  51
  52 /********************** SECTION HEADER **********************/
  53
  54
  55 struct external_scnhdr {
  56         char            s_name[8];      /* section name                 */
  57         char            s_paddr[4];     /* physical address, aliased s_nlib */
  58         char            s_vaddr[4];     /* virtual address              */
  59         char            s_size[4];      /* section size                 */
  60         char            s_scnptr[4];    /* file ptr to raw data for section */
  61         char            s_relptr[4];    /* file ptr to relocation       */
  62         char            s_lnnoptr[4];   /* file ptr to line numbers     */
  63         char            s_nreloc[2];    /* number of relocation entries */
  64         char            s_nlnno[2];     /* number of line number entries*/
  65         char            s_flags[4];     /* flags                        */
  66 };
  67
  68 /*
  69  * names of "special" sections
  70  */
  71 #define _TEXT   ".text"
  72 #define _DATA   ".data"
  73 #define _BSS    ".bss"
  74
  75
  76 #define SCNHDR  struct external_scnhdr
  77 #define SCNHSZ  sizeof(SCNHDR)
  78
  79
  80 /********************** LINE NUMBERS **********************/
  81
  82 /* 1 line number entry for every "breakpointable" source line in a section.
  83  * Line numbers are grouped on a per function basis; first entry in a function
  84  * grouping will have l_lnno = 0 and in place of physical address will be the
  85  * symbol table index of the function name.
  86  */
  87 struct external_lineno {
  88         union {
  89                 char l_symndx[4];       /* function name symbol index, iff l_lnno == 0*/
  90                 char l_paddr[4];        /* (physical) address of line number    */
  91         } l_addr;
  92         char l_lnno[4]; /* line number          */
  93 };
  94
  95 #define GET_LINENO_LNNO(abfd, ext) bfd_h_get_32(abfd, (bfd_byte *) (ext->l_lnno));
  96 #define PUT_LINENO_LNNO(abfd,val, ext) bfd_h_put_32(abfd,val,  (bfd_byte *) (ext->l_lnno));
  97
  98 #define LINENO  struct external_lineno
  99 #define LINESZ  sizeof(LINENO)
 100
 101
 102 /********************** SYMBOLS **********************/
 103
 104 #define E_SYMNMLEN      8       /* # characters in a symbol name        */
 105 #define E_FILNMLEN      14      /* # characters in a file name          */
 106 #define E_DIMNUM        4       /* # array dimensions in auxiliary entry */
 107
 108 struct external_syment
 109 {
 110   union {
 111     char e_name[E_SYMNMLEN];
 112     struct {
 113       char e_zeroes[4];
 114       char e_offset[4];
 115     } e;
 116   } e;
 117   char e_value[4];
 118   char e_scnum[2];
 119   char e_type[2];
 120   char e_sclass[1];
 121   char e_numaux[1];
 122 };
 123
 124
 125
 126 #define N_BTMASK        (017)
 127 #define N_TMASK         (060)
 128 #define N_BTSHFT        (4)
 129 #define N_TSHIFT        (2)
 130
 131
 132 union external_auxent {
 133         struct {
 134                 char x_tagndx[4];       /* str, un, or enum tag indx */
 135                 union {
 136                         struct {
 137                             char  x_lnno[2]; /* declaration line number */
 138                             char  x_size[2]; /* str/union/array size */
 139                         } x_lnsz;
 140                         char x_fsize[4];        /* size of function */
 141                 } x_misc;
 142                 union {
 143                         struct {                /* if ISFCN, tag, or .bb */
 144                             char x_lnnoptr[4];  /* ptr to fcn line # */
 145                             char x_endndx[4];   /* entry ndx past block end */
 146                         } x_fcn;
 147                         struct {                /* if ISARY, up to 4 dimen. */
 148                             char x_dimen[E_DIMNUM][2];
 149                         } x_ary;
 150                 } x_fcnary;
 151                 char x_tvndx[2];                /* tv index */
 152         } x_sym;
 153
 154         union {
 155                 char x_fname[E_FILNMLEN];
 156                 struct {
 157                         char x_zeroes[4];
 158                         char x_offset[4];
 159                 } x_n;
 160         } x_file;
 161
 162         struct {
 163                 char x_scnlen[4];                       /* section length */
 164                 char x_nreloc[2];       /* # relocation entries */
 165                 char x_nlinno[2];       /* # line numbers */
 166         } x_scn;
 167
 168         struct {
 169                 char x_tvfill[4];       /* tv fill value */
 170                 char x_tvlen[2];        /* length of .tv */
 171                 char x_tvran[2][2];     /* tv range */
 172         } x_tv;         /* info about .tv section (in auxent of symbol .tv)) */
 173
 174
 175 };
 176
 177 #define SYMENT  struct external_syment
 178 #define SYMESZ  18
 179 #define AUXENT  union external_auxent
 180 #define AUXESZ  18
 181
 182
 183
 184 /********************** RELOCATION DIRECTIVES **********************/
 185
 186 /* The external reloc has an offset field, because some of the reloc
 187    types on the h8 don't have room in the instruction for the entire
 188    offset - eg the strange jump and high page addressing modes */
 189
 190 struct external_reloc {
 191   char r_vaddr[4];
 192   char r_symndx[4];
 193   char r_offset[4];
 194   char r_type[2];
 195   char r_stuff[2];
 196 };
 197
 198
 199 #define RELOC struct external_reloc
 200 #define RELSZ 16
 201
 202 #define DEFAULT_DATA_SECTION_ALIGNMENT 4
 203 #define DEFAULT_BSS_SECTION_ALIGNMENT 4
 204 #define DEFAULT_TEXT_SECTION_ALIGNMENT 4
 205 /* For new sections we havn't heard of before */
 206 #define DEFAULT_SECTION_ALIGNMENT 4