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[binutils.git] / include / coff / arm.h

/* ARM COFF support for BFD.
   Copyright 1998, 1999, 2000 Free Software Foundation, Inc.

   This file is part of BFD, the Binary File Descriptor library.

   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 2 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,
   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#define COFFARM 1

#define L_LNNO_SIZE 2
#define INCLUDE_COMDAT_FIELDS_IN_AUXENT
#include "coff/external.h"

/* Bits for f_flags:
 	F_RELFLG	relocation info stripped from file
 	F_EXEC		file is executable (no unresolved external references)
 	F_LNNO		line numbers stripped from file
 	F_LSYMS		local symbols stripped from file
        F_INTERWORK     file supports switching between ARM and Thumb instruction sets
        F_INTERWORK_SET the F_INTERWORK bit is valid
 	F_APCS_FLOAT	code passes float arguments in float registers
 	F_PIC		code is reentrant/position-independent
 	F_AR32WR	file has byte ordering of an AR32WR machine (e.g. vax)
 	F_APCS_26	file uses 26 bit ARM Procedure Calling Standard
 	F_APCS_SET	the F_APCS_26, F_APCS_FLOAT and F_PIC bits have been initialised
 	F_SOFT_FLOAT	code does not use floating point instructions.  */

#define F_RELFLG	(0x0001)
#define F_EXEC		(0x0002)
#define F_LNNO		(0x0004)
#define F_LSYMS		(0x0008)
#define F_INTERWORK	(0x0010)
#define F_INTERWORK_SET	(0x0020)
#define F_APCS_FLOAT	(0x0040)
#undef  F_AR16WR
#define F_PIC		(0x0080)
#define	F_AR32WR	(0x0100)
#define F_APCS_26	(0x0400)
#define F_APCS_SET	(0x0800)
#define F_SOFT_FLOAT	(0x2000)

/* Bits stored in flags field of the internal_f structure */

#define F_INTERWORK	(0x0010)
#define F_APCS_FLOAT	(0x0040)
#define F_PIC		(0x0080)
#define F_APCS26	(0x1000)
#define F_ARM_ARCHITECTURE_MASK (0x4000+0x0800+0x0400)
#define F_ARM_2		(0x0400)
#define F_ARM_2a	(0x0800)
#define F_ARM_3		(0x0c00)
#define F_ARM_3M	(0x4000)
#define F_ARM_4		(0x4400)
#define F_ARM_4T	(0x4800)
#define F_ARM_5		(0x4c00)

/*
  ARMMAGIC ought to encoded the procesor type,
  but it is too late to change it now, instead
  the flags field of the internal_f structure
  is used as shown above.
 
  XXX - NC 5/6/97.  */

#define	ARMMAGIC	0xa00  /* I just made this up */

#define ARMBADMAG(x) (((x).f_magic != ARMMAGIC))

#define	ARMPEMAGIC	0x1c0
#define	THUMBPEMAGIC	0x1c2

#undef  ARMBADMAG
#define ARMBADMAG(x) (((x).f_magic != ARMMAGIC) && ((x).f_magic != ARMPEMAGIC) && ((x).f_magic != THUMBPEMAGIC))

#define OMAGIC          0404    /* object files, eg as output */
#define ZMAGIC          0413    /* demand load format, eg normal ld output */
#define STMAGIC		0401	/* target shlib */
#define SHMAGIC		0443	/* host   shlib */

/* define some NT default values */
/*  #define NT_IMAGE_BASE        0x400000 moved to internal.h */
#define NT_SECTION_ALIGNMENT 0x1000
#define NT_FILE_ALIGNMENT    0x200  
#define NT_DEF_RESERVE       0x100000
#define NT_DEF_COMMIT        0x1000

/* We use the .rdata section to hold read only data.  */
#define _LIT	".rdata"

/********************** RELOCATION DIRECTIVES **********************/
#ifdef ARM_WINCE
struct external_reloc
{
  char r_vaddr[4];
  char r_symndx[4];
  char r_type[2];
};

#define RELOC struct external_reloc
#define RELSZ 10

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

#define RELOC struct external_reloc
#define RELSZ 14
#endif