newlib/include/elf/m68hc11.h

/* m68hc11 & m68hc12 ELF support for BFD.
   Copyright 1999, 2000, 2001, 2002, 2010, 2012 Free Software Foundation, Inc.

   This file is part of BFD, the Binary File Descriptor library.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software Foundation,
   Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */

#ifndef _ELF_M68HC11_H
#define _ELF_M68HC11_H

#include "elf/reloc-macros.h"

/* Relocation types.  */
START_RELOC_NUMBERS (elf_m68hc11_reloc_type)
  RELOC_NUMBER (R_M68HC11_NONE, 0)
  RELOC_NUMBER (R_M68HC11_8, 1)
  RELOC_NUMBER (R_M68HC11_HI8, 2)
  RELOC_NUMBER (R_M68HC11_LO8, 3)
  RELOC_NUMBER (R_M68HC11_PCREL_8, 4)
  RELOC_NUMBER (R_M68HC11_16, 5)
  RELOC_NUMBER (R_M68HC11_32, 6)
  RELOC_NUMBER (R_M68HC11_3B, 7)
  RELOC_NUMBER (R_M68HC11_PCREL_16, 8)

     /* These are GNU extensions to enable C++ vtable garbage collection.  */
  RELOC_NUMBER (R_M68HC11_GNU_VTINHERIT, 9)
  RELOC_NUMBER (R_M68HC11_GNU_VTENTRY, 10)

  RELOC_NUMBER (R_M68HC11_24, 11)
  RELOC_NUMBER (R_M68HC11_LO16, 12)
  RELOC_NUMBER (R_M68HC11_PAGE, 13)

  RELOC_NUMBER (R_M68HC12_16B, 15)
  RELOC_NUMBER (R_M68HC12_PCREL_9, 16)
  RELOC_NUMBER (R_M68HC12_PCREL_10, 17)
  RELOC_NUMBER (R_M68HC12_HI8XG, 18)
  RELOC_NUMBER (R_M68HC12_LO8XG, 19)

     /* GNU extension for linker relaxation.
        Mark beginning of a jump instruction (any form).  */
  RELOC_NUMBER (R_M68HC11_RL_JUMP, 20)

     /* Mark beginning of Gcc relaxation group instruction.  */
  RELOC_NUMBER (R_M68HC11_RL_GROUP, 21)
END_RELOC_NUMBERS (R_M68HC11_max)

/* Processor specific flags for the ELF header e_flags field.  */

/* ABI identification.  */
#define EF_M68HC11_ABI  0x00000000F

/* Integers are 32-bit long.  */
#define E_M68HC11_I32   0x000000001

/* Doubles are 64-bit long.  */
#define E_M68HC11_F64   0x000000002

/* Uses 68HC12 memory banks.  */
#define E_M68HC12_BANKS 0x000000004

/* XGATE ram offsetting.  */
#define E_M68HC11_XGATE_RAMOFFSET     0x000000100

/* Suppress warnings */
#define E_M68HC11_NO_BANK_WARNING     0x000000200

#define EF_M68HC11_MACH_MASK 0xF0
#define EF_M68HC11_GENERIC   0x00 /* Generic 68HC12/backward compatibility.  */
#define EF_M68HC12_MACH      0x10 /* 68HC12 microcontroller.  */
#define EF_M68HCS12_MACH     0x20 /* 68HCS12 microcontroller.  */
#define EF_M68HC11_MACH(mach) ((mach) & EF_M68HC11_MACH_MASK)

/* True if we can merge machines.  A generic HC12 can work on any proc
   but once we have specific code, merge is not possible.  */
#define EF_M68HC11_CAN_MERGE_MACH(mach1, mach2) \
  ((EF_M68HC11_MACH (mach1) == EF_M68HC11_MACH (mach2)) \
   || (EF_M68HC11_MACH (mach1) == EF_M68HC11_GENERIC) \
   || (EF_M68HC11_MACH (mach2) == EF_M68HC11_GENERIC))

#define EF_M68HC11_MERGE_MACH(mach1, mach2) \
  (((EF_M68HC11_MACH (mach1) == EF_M68HC11_MACH (mach2)) \
    || (EF_M68HC11_MACH (mach1) == EF_M68HC11_GENERIC)) ? \
      EF_M68HC11_MACH (mach2) : EF_M68HC11_MACH (mach1))


/* Special values for the st_other field in the symbol table.  These
   are used for 68HC12 to identify far functions (must be called with
   'call' and returns with 'rtc').  */
#define STO_M68HC12_FAR          0x80

/* Identify interrupt handlers.  This is used by the debugger to
   correctly compute the stack frame.  */
#define STO_M68HC12_INTERRUPT    0x40
     
#endif