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  1. /* coff information for Zilog Z80
  2.    Copyright (C) 2005-2015 Free Software Foundation, Inc.
  3.    Contributed by Arnold Metselaar <arnold_m@operamail.com>
  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, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  18.  
  19. #define L_LNNO_SIZE 4
  20. #include "coff/external.h"
  21.  
  22. /* z80 backend does not use dots in section names.  */
  23. #undef  _TEXT
  24. #define _TEXT "text"
  25. #undef  _DATA
  26. #define _DATA "data"
  27. #undef  _BSS
  28. #define _BSS "bss"
  29.  
  30. /* Type of cpu is stored in flags.  */
  31. #define F_MACHMASK 0xF000
  32.  
  33. /* Z80 COFF encodes the section alignment in the section header flags */
  34. #define COFF_ALIGN_IN_SECTION_HEADER 1
  35. #define COFF_ALIGN_IN_S_FLAGS 1
  36. #define F_ALGNMASK 0x0F00
  37. /* requires a power-of-two argument */
  38. #define COFF_ENCODE_ALIGNMENT(S,X) ((S).s_flags |= (((unsigned)(X)&0xF)<<8))
  39. /* result is a power of two */
  40. #define COFF_DECODE_ALIGNMENT(X) (((X)>>8)&0xF)
  41.  
  42. #define Z80MAGIC   0x805A
  43.  
  44. #define Z80BADMAG(x) (((x).f_magic != Z80MAGIC))
  45.  
  46. /* Relocation directives.  */
  47.  
  48. /* This format actually has more bits than we need.  */
  49.  
  50. struct external_reloc
  51. {
  52.   char r_vaddr[4];
  53.   char r_symndx[4];
  54.   char r_offset[4];
  55.   char r_type[2];
  56.   char r_stuff[2];
  57. };
  58.  
  59. #define RELOC struct external_reloc
  60. #define RELSZ 16
  61.