include/coff/arm.h

   1 /* ARM COFF support for BFD.
   2    Copyright 1998, 1999, 2000, 2002, 2003, 2010, 2013
   3    Free Software Foundation, Inc.
   4
   5    This file is part of BFD, the Binary File Descriptor library.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software Foundation,
  19    Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  20
  21 #define COFFARM 1
  22
  23 #define L_LNNO_SIZE 2
  24 #define INCLUDE_COMDAT_FIELDS_IN_AUXENT
  25 #include "coff/external.h"
  26
  27 /* Bits for f_flags:
  28         F_RELFLG        relocation info stripped from file
  29         F_EXEC          file is executable (no unresolved external references)
  30         F_LNNO          line numbers stripped from file
  31         F_LSYMS         local symbols stripped from file
  32         F_INTERWORK     file supports switching between ARM and Thumb instruction sets
  33         F_INTERWORK_SET the F_INTERWORK bit is valid
  34         F_APCS_FLOAT    code passes float arguments in float registers
  35         F_PIC           code is reentrant/position-independent
  36         F_AR32WR        file has byte ordering of an AR32WR machine (e.g. vax)
  37         F_APCS_26       file uses 26 bit ARM Procedure Calling Standard
  38         F_APCS_SET      the F_APCS_26, F_APCS_FLOAT and F_PIC bits have been initialised
  39         F_SOFT_FLOAT    code does not use floating point instructions.  */
  40
  41 #define F_RELFLG        (0x0001)
  42 #define F_EXEC          (0x0002)
  43 #define F_LNNO          (0x0004)
  44 #define F_LSYMS         (0x0008)
  45 #define F_INTERWORK     (0x0010)
  46 #define F_INTERWORK_SET (0x0020)
  47 #define F_APCS_FLOAT    (0x0040)
  48 #undef  F_AR16WR
  49 #define F_PIC           (0x0080)
  50 #define F_AR32WR        (0x0100)
  51 #define F_APCS_26       (0x0400)
  52 #define F_APCS_SET      (0x0800)
  53 #define F_SOFT_FLOAT    (0x2000)
  54 #define F_VFP_FLOAT     (0x4000)
  55
  56 /* Bits stored in flags field of the internal_f structure */
  57
  58 #define F_INTERWORK     (0x0010)
  59 #define F_APCS_FLOAT    (0x0040)
  60 #define F_PIC           (0x0080)
  61 #define F_APCS26        (0x1000)
  62 #define F_ARM_ARCHITECTURE_MASK (0x4000+0x0800+0x0400)
  63 #define F_ARM_2         (0x0400)
  64 #define F_ARM_2a        (0x0800)
  65 #define F_ARM_3         (0x0c00)
  66 #define F_ARM_3M        (0x4000)
  67 #define F_ARM_4         (0x4400)
  68 #define F_ARM_4T        (0x4800)
  69 #define F_ARM_5         (0x4c00)
  70
  71 /*
  72   ARMMAGIC ought to encoded the procesor type,
  73   but it is too late to change it now, instead
  74   the flags field of the internal_f structure
  75   is used as shown above.
  76
  77   XXX - NC 5/6/97.  */
  78
  79 #define ARMMAGIC        0xa00  /* I just made this up */
  80
  81 #define ARMBADMAG(x) (((x).f_magic != ARMMAGIC))
  82
  83 #define ARMPEMAGIC      0x1c0
  84 #define THUMBPEMAGIC    0x1c2
  85 #define ARMV7PEMAGIC    0x1c4
  86
  87 #undef  ARMBADMAG
  88 #define ARMBADMAG(x) (((x).f_magic != ARMMAGIC) && ((x).f_magic != ARMPEMAGIC) && ((x).f_magic != THUMBPEMAGIC) && ((x).f_magic != ARMV7PEMAGIC))
  89
  90 #define OMAGIC          0404    /* object files, eg as output */
  91 #define ZMAGIC          0413    /* demand load format, eg normal ld output */
  92 #define STMAGIC         0401    /* target shlib */
  93 #define SHMAGIC         0443    /* host   shlib */
  94
  95 /* define some NT default values */
  96 /*  #define NT_IMAGE_BASE        0x400000 moved to internal.h */
  97 #define NT_SECTION_ALIGNMENT 0x1000
  98 #define NT_FILE_ALIGNMENT    0x200
  99 #define NT_DEF_RESERVE       0x100000
 100 #define NT_DEF_COMMIT        0x1000
 101
 102 /* We use the .rdata section to hold read only data.  */
 103 #define _LIT    ".rdata"
 104
 105 /********************** RELOCATION DIRECTIVES **********************/
 106 #ifdef ARM_WINCE
 107 struct external_reloc
 108 {
 109   char r_vaddr[4];
 110   char r_symndx[4];
 111   char r_type[2];
 112 };
 113
 114 #define RELOC struct external_reloc
 115 #define RELSZ 10
 116
 117 #else
 118 struct external_reloc
 119 {
 120   char r_vaddr[4];
 121   char r_symndx[4];
 122   char r_type[2];
 123   char r_offset[4];
 124 };
 125
 126 #define RELOC struct external_reloc
 127 #define RELSZ 14
 128 #endif
 129
 130 #define ARM_NOTE_SECTION ".note"