1/* this is tc-z80.h
2   Copyright 2005 Free Software Foundation, Inc.
3
4   Contributed by Arnold Metselaar <arnold_m@operamail.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 Free
20   Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
21   02110-1301, USA.  */
22
23#ifndef TC_Z80
24#define TC_Z80
25
26#define TARGET_ARCH   bfd_arch_z80
27#define BFD_ARCH      TARGET_ARCH
28#define COFF_MAGIC    0x5A80
29#define TARGET_MACH   0
30#define TARGET_BYTES_BIG_ENDIAN  0
31
32/* If you define this macro, GAS will warn about the
33   use of nonstandard escape sequences in a string.  */
34#define ONLY_STANDARD_ESCAPES
35
36/* GAS will call this function for any expression that can not be
37   recognized.  When the function is called, `input_line_pointer'
38   will point to the start of the expression.  */
39#define md_operand(x)
40
41/* This should just call either `number_to_chars_bigendian' or
42   `number_to_chars_littleendian', whichever is appropriate.  On
43   targets like the MIPS which support options to change the
44   endianness, which function to call is a runtime decision.  On
45   other targets, `md_number_to_chars' can be a simple macro.  */
46#define md_number_to_chars number_to_chars_littleendian
47
48#define TC_COUNT_RELOC(x) 1
49
50#define TC_COFF_FIX2RTYPE(fixP) tc_coff_fix2rtype (fixP)
51#define md_convert_frag(b,s,f)   as_fatal ("convert_frag called\n")
52#define md_estimate_size_before_relax(f,s) \
53  (as_fatal (_("estimate_size_before_relax called")), 1)
54
55/* Define some functions to be called by generic code.  */
56#define md_end               z80_md_end
57#define md_start_line_hook() { if (z80_start_line_hook ()) continue; }
58#define TC_CONS_FIX_NEW z80_cons_fix_new
59
60extern void z80_md_end (void);
61extern int z80_start_line_hook (void);
62extern void z80_cons_fix_new (fragS *, int, int, expressionS *);
63
64#define WORKING_DOT_WORD
65
66/* If you define this macro, it means that `tc_gen_reloc' may return
67   multiple relocation entries for a single fixup.  In this case, the
68   return value of `tc_gen_reloc' is a pointer to a null terminated
69   array.  */
70#undef RELOC_EXPANSION_POSSIBLE
71
72/* No shared lib support, so we don't need to ensure
73   externally visible symbols can be overridden.  */
74#define EXTERN_FORCE_RELOC 0
75
76/* Values passed to md_apply_fix3 don't include the symbol value.  */
77#define MD_APPLY_SYM_VALUE(FIX) 0
78
79#define LISTING_WORD_SIZE 2
80
81/* A single '=' is accepted as a comparison operator.  */
82#define O_SINGLE_EQ O_eq
83
84/* A '$' is used to refer to the current location or as a hex. prefix.  */
85#define DOLLAR_DOT
86#define DOLLAR_AMBIGU                1
87#define LOCAL_LABELS_FB              1
88#define LITERAL_PREFIXPERCENT_BIN
89#define NUMBERS_WITH_SUFFIX          1
90#define NO_PSEUDO_DOT                1
91/* We allow single quotes to delimit character constants as
92   well, but it is cleaner to handle that in tc-z80.c.  */
93#define SINGLE_QUOTE_STRINGS
94#define NO_STRING_ESCAPES
95
96/* An `.lcomm' directive with no explicit alignment parameter will
97   use this macro to set P2VAR to the alignment that a request for
98   SIZE bytes will have.  The alignment is expressed as a power of
99   two.  If no alignment should take place, the macro definition
100   should do nothing.  Some targets define a `.bss' directive that is
101   also affected by this macro.  The default definition will set
102   P2VAR to the truncated power of two of sizes up to eight bytes.  */
103#define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) (P2VAR) = 0
104
105#endif
106