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  1. /* m68hc11 & m68hc12 ELF support for BFD.
  2.    Copyright (C) 1999-2015 Free Software Foundation, Inc.
  3.  
  4.    This file is part of BFD, the Binary File Descriptor library.
  5.  
  6.    This program is free software; you can redistribute it and/or modify
  7.    it under the terms of the GNU General Public License as published by
  8.    the Free Software Foundation; either version 3 of the License, or
  9.    (at your option) any later version.
  10.  
  11.    This program is distributed in the hope that it will be useful,
  12.    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14.    GNU General Public License for more details.
  15.  
  16.    You should have received a copy of the GNU General Public License
  17.    along with this program; if not, write to the Free Software Foundation,
  18.    Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  19.  
  20. #ifndef _ELF_M68HC11_H
  21. #define _ELF_M68HC11_H
  22.  
  23. #include "elf/reloc-macros.h"
  24.  
  25. /* Relocation types.  */
  26. START_RELOC_NUMBERS (elf_m68hc11_reloc_type)
  27.   RELOC_NUMBER (R_M68HC11_NONE, 0)
  28.   RELOC_NUMBER (R_M68HC11_8, 1)
  29.   RELOC_NUMBER (R_M68HC11_HI8, 2)
  30.   RELOC_NUMBER (R_M68HC11_LO8, 3)
  31.   RELOC_NUMBER (R_M68HC11_PCREL_8, 4)
  32.   RELOC_NUMBER (R_M68HC11_16, 5)
  33.   RELOC_NUMBER (R_M68HC11_32, 6)
  34.   RELOC_NUMBER (R_M68HC11_3B, 7)
  35.   RELOC_NUMBER (R_M68HC11_PCREL_16, 8)
  36.  
  37.      /* These are GNU extensions to enable C++ vtable garbage collection.  */
  38.   RELOC_NUMBER (R_M68HC11_GNU_VTINHERIT, 9)
  39.   RELOC_NUMBER (R_M68HC11_GNU_VTENTRY, 10)
  40.  
  41.   RELOC_NUMBER (R_M68HC11_24, 11)
  42.   RELOC_NUMBER (R_M68HC11_LO16, 12)
  43.   RELOC_NUMBER (R_M68HC11_PAGE, 13)
  44.  
  45.   RELOC_NUMBER (R_M68HC12_16B, 15)
  46.   RELOC_NUMBER (R_M68HC12_PCREL_9, 16)
  47.   RELOC_NUMBER (R_M68HC12_PCREL_10, 17)
  48.   RELOC_NUMBER (R_M68HC12_HI8XG, 18)
  49.   RELOC_NUMBER (R_M68HC12_LO8XG, 19)
  50.  
  51.      /* GNU extension for linker relaxation.
  52.         Mark beginning of a jump instruction (any form).  */
  53.   RELOC_NUMBER (R_M68HC11_RL_JUMP, 20)
  54.  
  55.      /* Mark beginning of Gcc relaxation group instruction.  */
  56.   RELOC_NUMBER (R_M68HC11_RL_GROUP, 21)
  57. END_RELOC_NUMBERS (R_M68HC11_max)
  58.  
  59. /* Processor specific flags for the ELF header e_flags field.  */
  60.  
  61. /* ABI identification.  */
  62. #define EF_M68HC11_ABI  0x00000000F
  63.  
  64. /* Integers are 32-bit long.  */
  65. #define E_M68HC11_I32   0x000000001
  66.  
  67. /* Doubles are 64-bit long.  */
  68. #define E_M68HC11_F64   0x000000002
  69.  
  70. /* Uses 68HC12 memory banks.  */
  71. #define E_M68HC12_BANKS 0x000000004
  72.  
  73. /* XGATE ram offsetting.  */
  74. #define E_M68HC11_XGATE_RAMOFFSET     0x000000100
  75.  
  76. /* Suppress warnings */
  77. #define E_M68HC11_NO_BANK_WARNING     0x000000200
  78.  
  79. #define EF_M68HC11_MACH_MASK 0xF0
  80. #define EF_M68HC11_GENERIC   0x00 /* Generic 68HC12/backward compatibility.  */
  81. #define EF_M68HC12_MACH      0x10 /* 68HC12 microcontroller.  */
  82. #define EF_M68HCS12_MACH     0x20 /* 68HCS12 microcontroller.  */
  83. #define EF_M68HC11_MACH(mach) ((mach) & EF_M68HC11_MACH_MASK)
  84.  
  85. /* True if we can merge machines.  A generic HC12 can work on any proc
  86.    but once we have specific code, merge is not possible.  */
  87. #define EF_M68HC11_CAN_MERGE_MACH(mach1, mach2) \
  88.   ((EF_M68HC11_MACH (mach1) == EF_M68HC11_MACH (mach2)) \
  89.    || (EF_M68HC11_MACH (mach1) == EF_M68HC11_GENERIC) \
  90.    || (EF_M68HC11_MACH (mach2) == EF_M68HC11_GENERIC))
  91.  
  92. #define EF_M68HC11_MERGE_MACH(mach1, mach2) \
  93.   (((EF_M68HC11_MACH (mach1) == EF_M68HC11_MACH (mach2)) \
  94.     || (EF_M68HC11_MACH (mach1) == EF_M68HC11_GENERIC)) ? \
  95.       EF_M68HC11_MACH (mach2) : EF_M68HC11_MACH (mach1))
  96.  
  98. /* Special values for the st_other field in the symbol table.  These
  99.    are used for 68HC12 to identify far functions (must be called with
  100.    'call' and returns with 'rtc').  */
  101. #define STO_M68HC12_FAR          0x80
  102.  
  103. /* Identify interrupt handlers.  This is used by the debugger to
  104.    correctly compute the stack frame.  */
  105. #define STO_M68HC12_INTERRUPT    0x40
  106.      
  107. #endif
  108.