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5191 | serge | 1 | /* ARM COFF support for BFD. |
2 | Copyright 1998, 1999, 2000, 2002, 2003, 2010, 2013 |
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3 | Free Software Foundation, Inc. |
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4 | |||
5 | This file is part of BFD, the Binary File Descriptor library. |
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6 | |||
7 | This program is free software; you can redistribute it and/or modify |
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8 | it under the terms of the GNU General Public License as published by |
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9 | the Free Software Foundation; either version 3 of the License, or |
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10 | (at your option) any later version. |
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11 | |||
12 | This program is distributed in the hope that it will be useful, |
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13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | GNU General Public License for more details. |
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16 | |||
17 | You should have received a copy of the GNU General Public License |
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18 | along with this program; if not, write to the Free Software Foundation, |
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19 | Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
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20 | |||
21 | #define COFFARM 1 |
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22 | |||
23 | #define L_LNNO_SIZE 2 |
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24 | #define INCLUDE_COMDAT_FIELDS_IN_AUXENT |
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25 | #include "coff/external.h" |
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26 | |||
27 | /* Bits for f_flags: |
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28 | F_RELFLG relocation info stripped from file |
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29 | F_EXEC file is executable (no unresolved external references) |
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30 | F_LNNO line numbers stripped from file |
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31 | F_LSYMS local symbols stripped from file |
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32 | F_INTERWORK file supports switching between ARM and Thumb instruction sets |
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33 | F_INTERWORK_SET the F_INTERWORK bit is valid |
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34 | F_APCS_FLOAT code passes float arguments in float registers |
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35 | F_PIC code is reentrant/position-independent |
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36 | F_AR32WR file has byte ordering of an AR32WR machine (e.g. vax) |
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37 | F_APCS_26 file uses 26 bit ARM Procedure Calling Standard |
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38 | F_APCS_SET the F_APCS_26, F_APCS_FLOAT and F_PIC bits have been initialised |
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39 | F_SOFT_FLOAT code does not use floating point instructions. */ |
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40 | |||
41 | #define F_RELFLG (0x0001) |
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42 | #define F_EXEC (0x0002) |
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43 | #define F_LNNO (0x0004) |
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44 | #define F_LSYMS (0x0008) |
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45 | #define F_INTERWORK (0x0010) |
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46 | #define F_INTERWORK_SET (0x0020) |
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47 | #define F_APCS_FLOAT (0x0040) |
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48 | #undef F_AR16WR |
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49 | #define F_PIC (0x0080) |
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50 | #define F_AR32WR (0x0100) |
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51 | #define F_APCS_26 (0x0400) |
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52 | #define F_APCS_SET (0x0800) |
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53 | #define F_SOFT_FLOAT (0x2000) |
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54 | #define F_VFP_FLOAT (0x4000) |
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55 | |||
56 | /* Bits stored in flags field of the internal_f structure */ |
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57 | |||
58 | #define F_INTERWORK (0x0010) |
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59 | #define F_APCS_FLOAT (0x0040) |
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60 | #define F_PIC (0x0080) |
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61 | #define F_APCS26 (0x1000) |
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62 | #define F_ARM_ARCHITECTURE_MASK (0x4000+0x0800+0x0400) |
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63 | #define F_ARM_2 (0x0400) |
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64 | #define F_ARM_2a (0x0800) |
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65 | #define F_ARM_3 (0x0c00) |
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66 | #define F_ARM_3M (0x4000) |
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67 | #define F_ARM_4 (0x4400) |
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68 | #define F_ARM_4T (0x4800) |
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69 | #define F_ARM_5 (0x4c00) |
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70 | |||
71 | /* |
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72 | ARMMAGIC ought to encoded the procesor type, |
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73 | but it is too late to change it now, instead |
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74 | the flags field of the internal_f structure |
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75 | is used as shown above. |
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76 | |||
77 | XXX - NC 5/6/97. */ |
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78 | |||
79 | #define ARMMAGIC 0xa00 /* I just made this up */ |
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80 | |||
81 | #define ARMBADMAG(x) (((x).f_magic != ARMMAGIC)) |
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82 | |||
83 | #define ARMPEMAGIC 0x1c0 |
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84 | #define THUMBPEMAGIC 0x1c2 |
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85 | #define ARMV7PEMAGIC 0x1c4 |
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86 | |||
87 | #undef ARMBADMAG |
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88 | #define ARMBADMAG(x) (((x).f_magic != ARMMAGIC) && ((x).f_magic != ARMPEMAGIC) && ((x).f_magic != THUMBPEMAGIC) && ((x).f_magic != ARMV7PEMAGIC)) |
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89 | |||
90 | #define OMAGIC 0404 /* object files, eg as output */ |
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91 | #define ZMAGIC 0413 /* demand load format, eg normal ld output */ |
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92 | #define STMAGIC 0401 /* target shlib */ |
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93 | #define SHMAGIC 0443 /* host shlib */ |
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94 | |||
95 | /* define some NT default values */ |
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96 | /* #define NT_IMAGE_BASE 0x400000 moved to internal.h */ |
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97 | #define NT_SECTION_ALIGNMENT 0x1000 |
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98 | #define NT_FILE_ALIGNMENT 0x200 |
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99 | #define NT_DEF_RESERVE 0x100000 |
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100 | #define NT_DEF_COMMIT 0x1000 |
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101 | |||
102 | /* We use the .rdata section to hold read only data. */ |
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103 | #define _LIT ".rdata" |
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104 | |||
105 | /********************** RELOCATION DIRECTIVES **********************/ |
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106 | #ifdef ARM_WINCE |
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107 | struct external_reloc |
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108 | { |
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109 | char r_vaddr[4]; |
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110 | char r_symndx[4]; |
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111 | char r_type[2]; |
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112 | }; |
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113 | |||
114 | #define RELOC struct external_reloc |
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115 | #define RELSZ 10 |
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116 | |||
117 | #else |
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118 | struct external_reloc |
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119 | { |
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120 | char r_vaddr[4]; |
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121 | char r_symndx[4]; |
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122 | char r_type[2]; |
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123 | char r_offset[4]; |
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124 | }; |
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125 | |||
126 | #define RELOC struct external_reloc |
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127 | #define RELSZ 14 |
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128 | #endif |
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129 | |||
130 | #define ARM_NOTE_SECTION ".note" |