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  1. /* ARM COFF support for BFD.
  2.    Copyright (C) 1998-2015 Free Software Foundation, Inc.
  3.  
  4.    This file is part of BFD, the Binary File Descriptor library.
  5.  
  6.    This program is free software; you can redistribute it and/or modify
  7.    it under the terms of the GNU General Public License as published by
  8.    the Free Software Foundation; either version 3 of the License, or
  9.    (at your option) any later version.
  10.  
  11.    This program is distributed in the hope that it will be useful,
  12.    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14.    GNU General Public License for more details.
  15.  
  16.    You should have received a copy of the GNU General Public License
  17.    along with this program; if not, write to the Free Software Foundation,
  18.    Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  19.  
  20. #define COFFARM 1
  21.  
  22. #define L_LNNO_SIZE 2
  23. #define INCLUDE_COMDAT_FIELDS_IN_AUXENT
  24. #include "coff/external.h"
  25.  
  26. /* Bits for f_flags:
  27.         F_RELFLG        relocation info stripped from file
  28.         F_EXEC          file is executable (no unresolved external references)
  29.         F_LNNO          line numbers stripped from file
  30.         F_LSYMS         local symbols stripped from file
  31.         F_INTERWORK     file supports switching between ARM and Thumb instruction sets
  32.         F_INTERWORK_SET the F_INTERWORK bit is valid
  33.         F_APCS_FLOAT    code passes float arguments in float registers
  34.         F_PIC           code is reentrant/position-independent
  35.         F_AR32WR        file has byte ordering of an AR32WR machine (e.g. vax)
  36.         F_APCS_26       file uses 26 bit ARM Procedure Calling Standard
  37.         F_APCS_SET      the F_APCS_26, F_APCS_FLOAT and F_PIC bits have been initialised
  38.         F_SOFT_FLOAT    code does not use floating point instructions.  */
  39.  
  40. #define F_RELFLG        (0x0001)
  41. #define F_EXEC          (0x0002)
  42. #define F_LNNO          (0x0004)
  43. #define F_LSYMS         (0x0008)
  44. #define F_INTERWORK     (0x0010)
  45. #define F_INTERWORK_SET (0x0020)
  46. #define F_APCS_FLOAT    (0x0040)
  47. #undef  F_AR16WR
  48. #define F_PIC           (0x0080)
  49. #define F_AR32WR        (0x0100)
  50. #define F_APCS_26       (0x0400)
  51. #define F_APCS_SET      (0x0800)
  52. #define F_SOFT_FLOAT    (0x2000)
  53. #define F_VFP_FLOAT     (0x4000)
  54.  
  55. /* Bits stored in flags field of the internal_f structure */
  56.  
  57. #define F_INTERWORK     (0x0010)
  58. #define F_APCS_FLOAT    (0x0040)
  59. #define F_PIC           (0x0080)
  60. #define F_APCS26        (0x1000)
  61. #define F_ARM_ARCHITECTURE_MASK (0x4000+0x0800+0x0400)
  62. #define F_ARM_2         (0x0400)
  63. #define F_ARM_2a        (0x0800)
  64. #define F_ARM_3         (0x0c00)
  65. #define F_ARM_3M        (0x4000)
  66. #define F_ARM_4         (0x4400)
  67. #define F_ARM_4T        (0x4800)
  68. #define F_ARM_5         (0x4c00)
  69.  
  70. /*
  71.   ARMMAGIC ought to encoded the procesor type,
  72.   but it is too late to change it now, instead
  73.   the flags field of the internal_f structure
  74.   is used as shown above.
  75.  
  76.   XXX - NC 5/6/97.  */
  77.  
  78. #define ARMMAGIC        0xa00  /* I just made this up */
  79.  
  80. #define ARMBADMAG(x) (((x).f_magic != ARMMAGIC))
  81.  
  82. #define ARMPEMAGIC      0x1c0
  83. #define THUMBPEMAGIC    0x1c2
  84. #define ARMV7PEMAGIC    0x1c4
  85.  
  86. #undef  ARMBADMAG
  87. #define ARMBADMAG(x) (((x).f_magic != ARMMAGIC) && ((x).f_magic != ARMPEMAGIC) && ((x).f_magic != THUMBPEMAGIC) && ((x).f_magic != ARMV7PEMAGIC))
  88.  
  89. #define OMAGIC          0404    /* object files, eg as output */
  90. #define ZMAGIC          0413    /* demand load format, eg normal ld output */
  91. #define STMAGIC         0401    /* target shlib */
  92. #define SHMAGIC         0443    /* host   shlib */
  93.  
  94. /* define some NT default values */
  95. /*  #define NT_IMAGE_BASE        0x400000 moved to internal.h */
  96. #define NT_SECTION_ALIGNMENT 0x1000
  97. #define NT_FILE_ALIGNMENT    0x200  
  98. #define NT_DEF_RESERVE       0x100000
  99. #define NT_DEF_COMMIT        0x1000
  100.  
  101. /* We use the .rdata section to hold read only data.  */
  102. #define _LIT    ".rdata"
  103.  
  104. /********************** RELOCATION DIRECTIVES **********************/
  105. #ifdef ARM_WINCE
  106. struct external_reloc
  107. {
  108.   char r_vaddr[4];
  109.   char r_symndx[4];
  110.   char r_type[2];
  111. };
  112.  
  113. #define RELOC struct external_reloc
  114. #define RELSZ 10
  115.  
  116. #else
  117. struct external_reloc
  118. {
  119.   char r_vaddr[4];
  120.   char r_symndx[4];
  121.   char r_type[2];
  122.   char r_offset[4];
  123. };
  124.  
  125. #define RELOC struct external_reloc
  126. #define RELSZ 14
  127. #endif
  128.  
  129. #define ARM_NOTE_SECTION ".note"
  130.