/* m88k.h -- Assembler for the Motorola 88000
   Contributed by Devon Bowen of Buffalo University
   and Torbjorn Granlund of the Swedish Institute of Computer Science.
   Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000,
   2002 Free Software Foundation, Inc.

This file is part of GAS, the GNU Assembler.

GAS 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 2, or (at your option)
any later version.

GAS 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 GAS; see the file COPYING.  If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.  */

#define TC_M88K

#define TARGET_BYTES_BIG_ENDIAN 1
#undef REGISTER_PREFIX

#ifdef OBJ_AOUT
#ifdef TE_OpenBSD
#define TARGET_FORMAT "a.out-m88k-openbsd"
#endif
#endif

#ifdef M88KCOFF
#define BFD_ARCH bfd_arch_m88k
#define COFF_MAGIC MC88OMAGIC
#define COFF_FLAGS F_AR32W
#endif

#ifdef OBJ_ELF
#define BFD_ARCH bfd_arch_m88k
#define TARGET_ARCH bfd_arch_m88k
#define TARGET_FORMAT		"elf32-m88k"
#if defined(TE_OpenBSD)
#define REGISTER_PREFIX '%'
#else
#define REGISTER_PREFIX '#'
#endif
#endif

#define CUSTOM_RELOC_FORMAT

/* different type of relocation available in the m88k */

#ifdef BFD_ASSEMBLER
#include "bfd.h"
#define	m88k_reloc_type bfd_reloc_code_real
#else
enum m88k_reloc_type
{
  RELOC_LO16,		/* lo16(sym) */
  RELOC_HI16,		/* hi16(sym) */
  RELOC_PC16,		/* bb0, bb1, bcnd */
  RELOC_PC26,		/* br, bsr */
  RELOC_32,		/* jump tables, etc */
  RELOC_IW16,		/* global access through linker regs 28 */
  NO_RELOC
};

#define NEED_FX_R_TYPE
#ifdef M88KCOFF
#define TC_KEEP_FX_OFFSET
#endif
#define TC_CONS_RELOC RELOC_32

struct reloc_info_m88k
{
  unsigned long int r_address;
  unsigned int r_symbolnum:24;
  unsigned int r_extern:1;
  unsigned int r_pad:3;
  enum m88k_reloc_type r_type:4;
  long int r_addend;
};

#define relocation_info reloc_info_m88k
#endif /* BFD_ASSEMBLER */

#ifdef OBJ_ELF

/* This is used to recognize #abdiff, #got_rel and #plt symbols.
   The relocation type is stored in X_md.  */
#define md_parse_name m88k_parse_name
extern int m88k_parse_name (const char *, expressionS *, char *);

/* This expression evaluates to true if the relocation is for a local
   object for which we still want to do the relocation at runtime.
   False if we are willing to perform this relocation while building
   the .o file.  Only concerns pcrel relocs.  */

#define TC_FORCE_RELOCATION_LOCAL(FIX)			\
  (!(FIX)->fx_pcrel					\
   || (FIX)->fx_plt					\
   || (FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL	\
   || TC_FORCE_RELOCATION (FIX))

/* Keep relocations relative to the GOT, or non-PC relative.  */
#define tc_fix_adjustable(FIX) m88k_fix_adjustable (FIX)
extern int m88k_fix_adjustable PARAMS ((struct fix *));

#endif /* OBJ_ELF */

#ifndef OBJ_ELF
/* The m88k uses '@' to start local labels, except on ELF.  */
#define LEX_AT (LEX_BEGIN_NAME | LEX_NAME)

#ifndef BFD_ASSEMBLER
#define LOCAL_LABEL(name) \
  ((name[0] =='@' && (name [1] == 'L' || name [1] == '.')) \
   || (name[0] == 'L' && name[1] == '0' && name[2] == '\001'))
#endif
#endif /* OBJ_ELF */

#if !defined(OBJ_ELF) || !defined(TE_OpenBSD)
/* The m88k uses pseudo-ops with no leading period, except on OpenBSD ELF.  */
#define NO_PSEUDO_DOT 1
#endif

/* Don't warn on word overflow; it happens on %hi relocs.  */
#undef WARN_SIGNED_OVERFLOW_WORD

#define md_convert_frag(b,s,f)		{as_fatal (_("m88k convert_frag\n"));}

/* We don't need to do anything special for undefined symbols.  */
#define md_undefined_symbol(s) 0

/* We have no special operand handling.  */
#define md_operand(e)

#define tc_aout_pre_write_hook(x)      do { } while (0)
#define tc_crawl_symbol_chain(a)       do { } while (0)

#ifdef M88KCOFF

/* Whether a reloc should be output.  */
#define TC_COUNT_RELOC(fixp) ((fixp)->fx_addsy != NULL)

/* Get the BFD reloc type to use for a gas fixS structure.  */
#define TC_COFF_FIX2RTYPE(fixp) tc_coff_fix2rtype (fixp)

/* No special hook needed for symbols.  */
#define tc_coff_symbol_emit_hook(s)

/* Align sections to a four byte boundary.  */
#ifndef max
#define max(a,b)	(((a) > (b)) ? (a) : (b))
#endif
#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN)	max (section_alignment[(int) (SEG)], 4)

#endif /* M88KCOFF */

/* Fill in rs_align_code fragments.  */
extern void m88k_handle_align PARAMS ((fragS *));
#define HANDLE_ALIGN(frag)  m88k_handle_align (frag)

#define MAX_MEM_FOR_RS_ALIGN_CODE  (3 + 4)

#define elf_tc_final_processing m88k_elf_final_processing
extern void m88k_elf_final_processing (void);

/* word pseudo outputs 32-bit values, no risk of ``broken words'' */
#define WORKING_DOT_WORD