osprey/cygnus/include/coff/arm.h

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/*
 * Copyright 2003, 2004, 2005, 2006 PathScale, Inc.  All Rights Reserved.
 */

/* ARM COFF support for BFD.
   Copyright 1998, 1999, 2000, 2002, 2003 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)
#define F_VFP_FLOAT (0x4000)

/* 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

#define ARM_NOTE_SECTION ".note"

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