1  /* tc-crx.h -- Header file for tc-crx.c, the CRX GAS port.
       2     Copyright (C) 2004-2023 Free Software Foundation, Inc.
       3  
       4     Contributed by Tomer Levi, NSC, Israel.
       5     Originally written for GAS 2.12 by Tomer Levi, NSC, Israel.
       6     Updates, BFDizing, GNUifying and ELF support by Tomer Levi.
       7  
       8     This file is part of GAS, the GNU Assembler.
       9  
      10     GAS is free software; you can redistribute it and/or modify
      11     it under the terms of the GNU General Public License as published by
      12     the Free Software Foundation; either version 3, or (at your option)
      13     any later version.
      14  
      15     GAS is distributed in the hope that it will be useful,
      16     but WITHOUT ANY WARRANTY; without even the implied warranty of
      17     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      18     GNU General Public License for more details.
      19  
      20     You should have received a copy of the GNU General Public License
      21     along with GAS; see the file COPYING.  If not, write to the
      22     Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
      23     MA 02110-1301, USA.  */
      24  
      25  #ifndef TC_CRX_H
      26  #define TC_CRX_H
      27  
      28  #define TC_CRX 1
      29  
      30  #define TARGET_BYTES_BIG_ENDIAN 0
      31  
      32  #define TARGET_FORMAT "elf32-crx"
      33  #define TARGET_ARCH   bfd_arch_crx
      34  
      35  #define WORKING_DOT_WORD
      36  #define LOCAL_LABEL_PREFIX '.'
      37  
      38  #define md_undefined_symbol(s)	0
      39  #define md_number_to_chars	number_to_chars_littleendian
      40  
      41  /* We do relaxing in the assembler as well as the linker.  */
      42  extern const struct relax_type md_relax_table[];
      43  #define TC_GENERIC_RELAX_TABLE md_relax_table
      44  
      45  /* We do not want to adjust any relocations to make implementation of
      46     linker relaxations easier.  */
      47  #define tc_fix_adjustable(fixP)	0
      48  
      49  /* We need to force out some relocations when relaxing.  */
      50  #define TC_FORCE_RELOCATION(FIXP) crx_force_relocation (FIXP)
      51  extern int crx_force_relocation (struct fix *);
      52  
      53  /* Fixup debug sections since we will never relax them.  */
      54  #define TC_LINKRELAX_FIXUP(seg) (seg->flags & SEC_ALLOC)
      55  
      56  /* CRX instructions, with operands included, are a multiple
      57     of two bytes long.  */
      58  #define DWARF2_LINE_MIN_INSN_LENGTH 2
      59  
      60  /* This is called by emit_expr when creating a reloc for a cons.
      61     We could use the definition there, except that we want to handle
      62     the CRX reloc type specially, rather than the BFD_RELOC type.  */
      63  #define TC_CONS_FIX_NEW(FRAG, OFF, LEN, EXP, RELOC) \
      64        (void) RELOC, \
      65        fix_new_exp (FRAG, OFF, (int) LEN, EXP, 0, \
      66  	LEN == 1 ? BFD_RELOC_CRX_NUM8 \
      67  	: LEN == 2 ? BFD_RELOC_CRX_NUM16 \
      68  	: LEN == 4 ? BFD_RELOC_CRX_NUM32 \
      69  	: BFD_RELOC_NONE);
      70  
      71  /* Give an error if a frag containing code is not aligned to a 2-byte
      72     boundary.  */
      73  #define md_frag_check(FRAGP) \
      74    if ((FRAGP)->has_code							\
      75        && (((FRAGP)->fr_address + (FRAGP)->insn_addr) & 1) != 0)		\
      76       as_bad_where ((FRAGP)->fr_file, (FRAGP)->fr_line,			\
      77  		   _("instruction address is not a multiple of 2"));
      78  
      79  #endif /* TC_CRX_H */