include/elf/m68hc11.h

   1 /* m68hc11 & m68hc12 ELF support for BFD.
   2    Copyright 1999, 2000, 2001, 2002 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 2 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      /* GNU extension for linker relaxation.
  46         Mark beginning of a jump instruction (any form).  */
  47   RELOC_NUMBER (R_M68HC11_RL_JUMP, 20)
  48
  49      /* Mark beginning of Gcc relaxation group instruction.  */
  50   RELOC_NUMBER (R_M68HC11_RL_GROUP, 21)
  51 END_RELOC_NUMBERS (R_M68HC11_max)
  52
  53 /* Processor specific flags for the ELF header e_flags field.  */
  54
  55 /* ABI identification.  */
  56 #define EF_M68HC11_ABI  0x00000000F
  57
  58 /* Integers are 32-bit long.  */
  59 #define E_M68HC11_I32   0x000000001
  60
  61 /* Doubles are 64-bit long.  */
  62 #define E_M68HC11_F64   0x000000002
  63
  64 /* Uses 68HC12 memory banks.  */
  65 #define E_M68HC12_BANKS 0x000000004
  66
  67 #define EF_M68HC11_MACH_MASK 0xF0
  68 #define EF_M68HC11_GENERIC   0x00 /* Generic 68HC12/backward compatibility.  */
  69 #define EF_M68HC12_MACH      0x10 /* 68HC12 microcontroller.  */
  70 #define EF_M68HCS12_MACH     0x20 /* 68HCS12 microcontroller.  */
  71 #define EF_M68HC11_MACH(mach) ((mach) & EF_M68HC11_MACH_MASK)
  72
  73 /* True if we can merge machines.  A generic HC12 can work on any proc
  74    but once we have specific code, merge is not possible.  */
  75 #define EF_M68HC11_CAN_MERGE_MACH(mach1, mach2) \
  76   ((EF_M68HC11_MACH (mach1) == EF_M68HC11_MACH (mach2)) \
  77    || (EF_M68HC11_MACH (mach1) == EF_M68HC11_GENERIC) \
  78    || (EF_M68HC11_MACH (mach2) == EF_M68HC11_GENERIC))
  79
  80 #define EF_M68HC11_MERGE_MACH(mach1, mach2) \
  81   (((EF_M68HC11_MACH (mach1) == EF_M68HC11_MACH (mach2)) \
  82     || (EF_M68HC11_MACH (mach1) == EF_M68HC11_GENERIC)) ? \
  83       EF_M68HC11_MACH (mach2) : EF_M68HC11_MACH (mach1))
  84
  85 \f
  86 /* Special values for the st_other field in the symbol table.  These
  87    are used for 68HC12 to identify far functions (must be called with
  88    'call' and returns with 'rtc').  */
  89 #define STO_M68HC12_FAR 0x80
  90
  91 /* Identify interrupt handlers.  This is used by the debugger to
  92    correctly compute the stack frame.  */
  93 #define STO_M68HC12_INTERRUPT 0x40
  94
  95 #endif