1/* coff information for Zilog Z80
2   Copyright (C) 2005-2022 Free Software Foundation, Inc.
3   Contributed by Arnold Metselaar <arnold_m@operamail.com>
4
5   This program is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by
7   the Free Software Foundation; either version 3 of the License, or
8   (at your option) any later version.
9
10   This program is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   GNU General Public License for more details.
14
15   You should have received a copy of the GNU General Public License
16   along with this program; if not, write to the Free Software
17   Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
18
19#define L_LNNO_SIZE 4
20#include "coff/external.h"
21
22/* z80 backend does not use dots in section names.  */
23#undef  _TEXT
24#define _TEXT "text"
25#undef  _DATA
26#define _DATA "data"
27#undef  _BSS
28#define _BSS "bss"
29
30/* Type of cpu is stored in flags.  */
31#define F_MACHMASK 0xF000
32
33/* Z80 COFF encodes the section alignment in the section header flags */
34#define COFF_ALIGN_IN_SECTION_HEADER 1
35#define COFF_ALIGN_IN_S_FLAGS 1
36#define F_ALGNMASK 0x0F00
37/* requires a power-of-two argument */
38#define COFF_ENCODE_ALIGNMENT(B,S,X) \
39  ((S).s_flags |= (((unsigned) (X) & 0xF) << 8), true)
40/* result is a power of two */
41#define COFF_DECODE_ALIGNMENT(X) (((X) >> 8) & 0xF)
42
43#define	Z80MAGIC   0x805A
44
45#define Z80BADMAG(x) (((x).f_magic != Z80MAGIC))
46
47/* Relocation directives.  */
48
49/* This format actually has more bits than we need.  */
50
51struct external_reloc
52{
53  char r_vaddr[4];
54  char r_symndx[4];
55  char r_offset[4];
56  char r_type[2];
57  char r_stuff[2];
58};
59
60#define RELOC struct external_reloc
61#define RELSZ 16
62
63/* Z80 relocations.  */
64#define R_IMM16   0x01		/* 16 bit abs */
65#define R_JR      0x02		/* jr  8 bit disp */
66#define R_IMM32   0x11		/* 32 bit abs */
67#define R_IMM8    0x22		/* 8 bit abs */
68
69#define R_OFF8    0x32		/* 8 bit signed abs, for (i[xy]+d) */
70#define R_IMM24   0x33		/* 24 bit abs */
71#define R_IMM16BE 0x3A		/* 16 bit abs, big endian */
72#define R_BYTE0   0x34		/* first (lowest) 8 bits of multibyte value */
73#define R_BYTE1   0x35		/* second 8 bits of multibyte value */
74#define R_BYTE2   0x36		/* third 8 bits of multibyte value */
75#define R_BYTE3   0x37		/* fourth (highest) 8 bits of multibyte value */
76#define R_WORD0   0x38		/* lowest 16 bits of 32 or 24 bit value */
77#define R_WORD1   0x39		/* highest 16 bits of 32 or 24 bit value */
78