include/coff/z80.h

/* coff information for Zilog Z80
   Copyright (C) 2005-2021 Free Software Foundation, Inc.
   Contributed by Arnold Metselaar <arnold_m@operamail.com>

   This program 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 3 of the License, or
   (at your option) any later version.
   
   This program 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 this program; if not, write to the Free Software
   Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */

#define L_LNNO_SIZE 4
#include "coff/external.h"

/* z80 backend does not use dots in section names.  */
#undef  _TEXT
#define _TEXT "text"
#undef  _DATA
#define _DATA "data"
#undef  _BSS
#define _BSS "bss"

/* Type of cpu is stored in flags.  */
#define F_MACHMASK 0xF000

/* Z80 COFF encodes the section alignment in the section header flags */
#define COFF_ALIGN_IN_SECTION_HEADER 1
#define COFF_ALIGN_IN_S_FLAGS 1
#define F_ALGNMASK 0x0F00
/* requires a power-of-two argument */
#define COFF_ENCODE_ALIGNMENT(B,S,X) \
  ((S).s_flags |= (((unsigned) (X) & 0xF) << 8), true)
/* result is a power of two */
#define COFF_DECODE_ALIGNMENT(X) (((X) >> 8) & 0xF)

#define	Z80MAGIC   0x805A

#define Z80BADMAG(x) (((x).f_magic != Z80MAGIC))

/* Relocation directives.  */

/* This format actually has more bits than we need.  */

struct external_reloc
{
  char r_vaddr[4];
  char r_symndx[4];
  char r_offset[4];
  char r_type[2];
  char r_stuff[2];
};

#define RELOC struct external_reloc
#define RELSZ 16

/* Z80 relocations.  */
#define R_IMM16   0x01		/* 16 bit abs */
#define R_JR      0x02		/* jr  8 bit disp */
#define R_IMM32   0x11		/* 32 bit abs */
#define R_IMM8    0x22		/* 8 bit abs */

#define R_OFF8    0x32		/* 8 bit signed abs, for (i[xy]+d) */
#define R_IMM24   0x33		/* 24 bit abs */
#define R_IMM16BE 0x3A		/* 16 bit abs, big endian */
#define R_BYTE0   0x34		/* first (lowest) 8 bits of multibyte value */
#define R_BYTE1   0x35		/* second 8 bits of multibyte value */
#define R_BYTE2   0x36		/* third 8 bits of multibyte value */
#define R_BYTE3   0x37		/* fourth (highest) 8 bits of multibyte value */
#define R_WORD0   0x38		/* lowest 16 bits of 32 or 24 bit value */
#define R_WORD1   0x39		/* highest 16 bits of 32 or 24 bit value */