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  1. /* coff information for 88k bcs
  2.    
  3.    Copyright 2001, 2010 Free Software Foundation, Inc.
  4.  
  5.    This program is free software; you can redistribute it and/or modify
  6.    it under the terms of the GNU General Public License as published by
  7.    the Free Software Foundation; either version 3 of the License, or
  8.    (at your option) any later version.
  9.    
  10.    This program is distributed in the hope that it will be useful,
  11.    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13.    GNU General Public License for more details.
  14.    
  15.    You should have received a copy of the GNU General Public License
  16.    along with this program; if not, write to the Free Software
  17.    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  18.    MA 02110-1301, USA.  */
  19.  
  20. #define DO_NOT_DEFINE_SCNHDR
  21. #define L_LNNO_SIZE 4
  22. #define DO_NOT_DEFINE_SYMENT
  23. #define DO_NOT_DEFINE_AUXENT
  24. #include "coff/external.h"
  25.  
  26. #define MC88MAGIC  0540           /* 88k BCS executable */
  27. #define MC88DMAGIC 0541           /* DG/UX executable   */
  28. #define MC88OMAGIC 0555           /* Object file        */
  29.  
  30. #define MC88BADMAG(x) (((x).f_magic != MC88MAGIC) \
  31.                     && ((x).f_magic != MC88DMAGIC) \
  32.                     && ((x).f_magic != MC88OMAGIC))
  33.  
  34. #define PAGEMAGIC3   0414 /* Split i&d, zero mapped */
  35. #define PAGEMAGICBCS 0413
  36.  
  37. /********************** SECTION HEADER **********************/
  38.  
  39. struct external_scnhdr
  40. {
  41.   char          s_name[8];      /* section name                 */
  42.   char          s_paddr[4];     /* physical address, aliased s_nlib */
  43.   char          s_vaddr[4];     /* virtual address              */
  44.   char          s_size[4];      /* section size                 */
  45.   char          s_scnptr[4];    /* file ptr to raw data for section */
  46.   char          s_relptr[4];    /* file ptr to relocation       */
  47.   char          s_lnnoptr[4];   /* file ptr to line numbers     */
  48.   char          s_nreloc[4];    /* number of relocation entries */
  49.   char          s_nlnno[4];     /* number of line number entries*/
  50.   char          s_flags[4];     /* flags                        */
  51. };
  52.  
  53. #define SCNHDR  struct external_scnhdr
  54. #define SCNHSZ  44
  55.  
  56. /* Names of "special" sections.  */
  57. #define _TEXT   ".text"
  58. #define _DATA   ".data"
  59. #define _BSS    ".bss"
  60. #define _COMMENT ".comment"
  61.  
  62.  
  63. /********************** SYMBOLS **********************/
  64.  
  65. #define E_SYMNMLEN      8       /* # characters in a symbol name        */
  66. #define E_FILNMLEN      14      /* # characters in a file name          */
  67. #define E_DIMNUM        4       /* # array dimensions in auxiliary entry */
  68.  
  69. struct external_syment
  70. {
  71.   union
  72.   {
  73.     char e_name[E_SYMNMLEN];
  74.  
  75.     struct
  76.     {
  77.       char e_zeroes[4];
  78.       char e_offset[4];
  79.     } e;
  80.  
  81.   } e;
  82.  
  83.   char e_value[4];
  84.   char e_scnum[2];
  85.   char e_type[2];
  86.   char e_sclass[1];
  87.   char e_numaux[1];
  88.   char pad2[2];
  89. };
  90.  
  91. #define N_BTMASK        017
  92. #define N_TMASK         060
  93. #define N_BTSHFT        4
  94. #define N_TSHIFT        2
  95.  
  96. /* Note that this isn't the same shape as other coffs */
  97. union external_auxent
  98. {
  99.   struct
  100.   {
  101.     char x_tagndx[4];           /* str, un, or enum tag indx */
  102.     /* 4 */
  103.    
  104.     union
  105.     {
  106.       char x_fsize[4];          /* size of function */
  107.  
  108.       struct
  109.       {
  110.         char  x_lnno[4];        /* declaration line number */
  111.         char  x_size[4];        /* str/union/array size */
  112.       } x_lnsz;
  113.  
  114.     } x_misc;
  115.    
  116.     /* 12 */
  117.     union
  118.     {
  119.       struct                    /* if ISFCN, tag, or .bb */
  120.       {
  121.         char x_lnnoptr[4];      /* ptr to fcn line # */
  122.         char x_endndx[4];               /* entry ndx past block end */
  123.       } x_fcn;
  124.  
  125.       struct                    /* if ISARY, up to 4 dimen. */
  126.       {
  127.         char x_dimen[E_DIMNUM][2];
  128.       } x_ary;
  129.  
  130.     } x_fcnary;
  131.     /* 20 */
  132.    
  133.   } x_sym;
  134.  
  135.   union
  136.   {
  137.     char x_fname[E_FILNMLEN];
  138.  
  139.     struct
  140.     {
  141.       char x_zeroes[4];
  142.       char x_offset[4];
  143.     } x_n;
  144.  
  145.   } x_file;
  146.  
  147.   struct
  148.   {
  149.     char x_scnlen[4];           /* section length */
  150.     char x_nreloc[4];           /* # relocation entries */
  151.     char x_nlinno[4];           /* # line numbers */
  152.   } x_scn;
  153.  
  154.   struct
  155.   {
  156.     char x_tvfill[4];           /* tv fill value */
  157.     char x_tvlen[2];            /* length of .tv */
  158.     char x_tvran[2][2];         /* tv range */
  159.   } x_tv;                       /* info about .tv section (in auxent of symbol .tv)) */
  160. };
  161.  
  162. #define GET_LNSZ_SIZE(abfd, ext) \
  163.   H_GET_32 (abfd, ext->x_sym.x_misc.x_lnsz.x_size)
  164. #define GET_LNSZ_LNNO(abfd, ext) \
  165.   H_GET_32 (abfd, ext->x_sym.x_misc.x_lnsz.x_lnno)
  166. #define PUT_LNSZ_LNNO(abfd, in, ext) \
  167.   H_PUT_32 (abfd, in, ext->x_sym.x_misc.x_lnsz.x_lnno)
  168. #define PUT_LNSZ_SIZE(abfd, in, ext) \
  169.   H_PUT_32 (abfd, in, ext->x_sym.x_misc.x_lnsz.x_size)
  170. #define GET_SCN_NRELOC(abfd, ext) \
  171.   H_GET_32 (abfd, ext->x_scn.x_nreloc)
  172. #define GET_SCN_NLINNO(abfd, ext) \
  173.   H_GET_32 (abfd, ext->x_scn.x_nlinno)
  174. #define PUT_SCN_NRELOC(abfd, in, ext) \
  175.   H_PUT_32 (abfd, in, ext->x_scn.x_nreloc)
  176. #define PUT_SCN_NLINNO(abfd, in, ext) \
  177.   H_PUT_32 (abfd,in, ext->x_scn.x_nlinno)
  178.  
  179. #define SYMENT  struct external_syment
  180. #define SYMESZ  20
  181. #define AUXENT  union external_auxent
  182. #define AUXESZ  20
  183.  
  184. /********************** RELOCATION DIRECTIVES **********************/
  185.  
  186. struct external_reloc
  187. {
  188.   char r_vaddr[4];
  189.   char r_symndx[4];
  190.   char r_type[2];
  191.   char r_offset[2];
  192. };
  193.  
  194. #define RELOC struct external_reloc
  195. #define RELSZ  12
  196.  
  197. #define NO_TVNDX
  198.