1/* tc-cr16.h -- Header file for tc-cr16.c, the CR16 GAS port.
2   Copyright 2007 Free Software Foundation, Inc.
3
4   Contributed by M R Swami Reddy <MR.Swami.Reddy@nsc.com>
5
6   This file is part of GAS, the GNU Assembler.
7
8   GAS is free software; you can redistribute it and/or modify
9   it under the terms of the GNU General Public License as published by
10   the Free Software Foundation; either version 2, or (at your option)
11   any later version.
12
13   GAS is distributed in the hope that it will be useful,
14   but WITHOUT ANY WARRANTY; without even the implied warranty of
15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16   GNU General Public License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with GAS; see the file COPYING.  If not, write to the
20   Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
21   MA 02110-1301, USA.  */
22
23#ifndef TC_CR16_H
24#define TC_CR16_H
25
26#define TC_CR16 1
27
28#define TARGET_BYTES_BIG_ENDIAN 0
29
30#define TARGET_FORMAT "elf32-cr16"
31#define TARGET_ARCH   bfd_arch_cr16
32
33#define WORKING_DOT_WORD
34#define LOCAL_LABEL_PREFIX '.'
35
36#define md_undefined_symbol(s)  0
37#define md_number_to_chars      number_to_chars_littleendian
38
39/* We do relaxing in the assembler as well as the linker.  */
40extern const struct relax_type md_relax_table[];
41#define TC_GENERIC_RELAX_TABLE md_relax_table
42
43/* We do not want to adjust any relocations to make implementation of
44   linker relaxations easier.  */
45#define tc_fix_adjustable(fixP)  0
46
47/* We need to force out some relocations when relaxing.  */
48#define TC_FORCE_RELOCATION(FIXP) cr16_force_relocation (FIXP)
49extern int cr16_force_relocation (struct fix *);
50
51/* Fixup debug sections since we will never relax them.  */
52#define TC_LINKRELAX_FIXUP(seg) (seg->flags & SEC_ALLOC)
53
54/* CR16 instructions, with operands included, are a multiple
55   of two bytes long.  */
56#define DWARF2_LINE_MIN_INSN_LENGTH 2
57
58extern void cr16_cons_fix_new (struct frag *, int, int, struct expressionS *);
59/* This is called by emit_expr when creating a reloc for a cons.
60   We could use the definition there, except that we want to handle
61   the CR16 reloc type specially, rather than the BFD_RELOC type.  */
62#define TC_CONS_FIX_NEW(FRAG, OFF, LEN, EXP) \
63  cr16_cons_fix_new (FRAG, OFF, LEN, EXP)
64
65/* Give an error if a frag containing code is not aligned to a 2-byte
66   boundary.  */
67#define md_frag_check(FRAGP) \
68  if ((FRAGP)->has_code                                                \
69      && (((FRAGP)->fr_address + (FRAGP)->insn_addr) & 1) != 0)        \
70     as_bad_where ((FRAGP)->fr_file, (FRAGP)->fr_line,                 \
71                  _("instruction address is not a multiple of 2"));
72
73#endif /* TC_CR16_H */
74