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  1. /* coff information for TI TMS320C80 (MVP)
  2.    
  3.    Copyright (C) 2001-2015 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_FILHDR
  21. #define DO_NOT_DEFINE_SCNHDR
  22. #define L_LNNO_SIZE 2
  23. #include "coff/external.h"
  24.  
  25. /********************** FILE HEADER **********************/
  26.  
  27. struct external_filehdr
  28.   {
  29.     char f_magic[2];    /* magic number                 */
  30.     char f_nscns[2];    /* number of sections           */
  31.     char f_timdat[4];   /* time & date stamp            */
  32.     char f_symptr[4];   /* file pointer to symtab       */
  33.     char f_nsyms[4];    /* number of symtab entries     */
  34.     char f_opthdr[2];   /* sizeof(optional hdr)         */
  35.     char f_flags[2];    /* flags                        */
  36.     char f_target_id[2];/* target id (TIc80 specific)   */
  37. };
  38.  
  39. #define TIC80_ARCH_MAGIC        0x0C1   /* Goes in the file header magic number field */
  40. #define TIC80_TARGET_ID         0x95    /* Goes in the target id field */
  41.  
  42. #define TIC80BADMAG(x) ((x).f_magic != TIC80_ARCH_MAGIC)
  43.  
  44. #define FILHDR  struct external_filehdr
  45. #define FILHSZ  22
  46.  
  47. #define TIC80_AOUTHDR_MAGIC     0x108   /* Goes in the optional file header magic number field */
  48.  
  49. /********************** SECTION HEADER **********************/
  50.  
  51. struct external_scnhdr
  52. {
  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. /* Names of "special" sections.  */
  68. #define _TEXT   ".text"
  69. #define _DATA   ".data"
  70. #define _BSS    ".bss"
  71. #define _CINIT  ".cinit"
  72. #define _CONST  ".const"
  73. #define _SWITCH ".switch"
  74. #define _STACK  ".stack"
  75. #define _SYSMEM ".sysmem"
  76.  
  77. #define SCNHDR  struct external_scnhdr
  78. #define SCNHSZ  40
  79.  
  80. /* FIXME - need to correlate external_auxent with
  81.    TIc80 Code Generation Tools User's Guide, CG:A-25 */
  82.  
  83. /********************** RELOCATION DIRECTIVES **********************/
  84.  
  85. /* The external reloc has an offset field, because some of the reloc
  86.    types on the h8 don't have room in the instruction for the entire
  87.    offset - eg the strange jump and high page addressing modes.  */
  88.  
  89. struct external_reloc
  90. {
  91.   char r_vaddr[4];
  92.   char r_symndx[4];
  93.   char r_reserved[2];
  94.   char r_type[2];
  95. };
  96.  
  97. #define RELOC struct external_reloc
  98. #define RELSZ 12
  99.  
  100. /* TIc80 relocation types. */
  101.  
  102. #define R_ABS           0x00            /* Absolute address - no relocation */
  103. #define R_RELLONGX      0x11            /* PP: 32 bits, direct */
  104. #define R_PPBASE        0x34            /* PP: Global base address type */
  105. #define R_PPLBASE       0x35            /* PP: Local base address type */
  106. #define R_PP15          0x38            /* PP: Global 15 bit offset */
  107. #define R_PP15W         0x39            /* PP: Global 15 bit offset divided by 4 */
  108. #define R_PP15H         0x3A            /* PP: Global 15 bit offset divided by 2 */
  109. #define R_PP16B         0x3B            /* PP: Global 16 bit offset for bytes */
  110. #define R_PPL15         0x3C            /* PP: Local 15 bit offset */
  111. #define R_PPL15W        0x3D            /* PP: Local 15 bit offset divided by 4 */
  112. #define R_PPL15H        0x3E            /* PP: Local 15 bit offset divided by 2 */
  113. #define R_PPL16B        0x3F            /* PP: Local 16 bit offset for bytes */
  114. #define R_PPN15         0x40            /* PP: Global 15 bit negative offset */
  115. #define R_PPN15W        0x41            /* PP: Global 15 bit negative offset divided by 4 */
  116. #define R_PPN15H        0x42            /* PP: Global 15 bit negative offset divided by 2 */
  117. #define R_PPN16B        0x43            /* PP: Global 16 bit negative byte offset */
  118. #define R_PPLN15        0x44            /* PP: Local 15 bit negative offset */
  119. #define R_PPLN15W       0x45            /* PP: Local 15 bit negative offset divided by 4 */
  120. #define R_PPLN15H       0x46            /* PP: Local 15 bit negative offset divided by 2 */
  121. #define R_PPLN16B       0x47            /* PP: Local 16 bit negative byte offset */
  122. #define R_MPPCR15W      0x4E            /* MP: 15 bit PC-relative divided by 4 */
  123. #define R_MPPCR         0x4F            /* MP: 32 bit PC-relative divided by 4 */
  124.