Mercurial > ecos
annotate packages/services/loader/current/include/mips_elf.h @ 208:e0c0827131d1 ecos
Merge from eCos master repository on 2002-05-20-20:11:54-BST
| author | jlarmour |
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| date | Mon, 20 May 2002 22:19:26 +0000 |
| parents | 022f1e506033 |
| children | d2c90368aeef |
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1 #ifndef CYGONCE_LOADER_MIPS_ELF_H |
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2 #define CYGONCE_LOADER_MIPS_ELF_H |
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3 |
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4 //========================================================================== |
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5 // |
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6 // mips_elf.h |
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7 // |
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8 // MIPS specific ELF file format support |
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9 // |
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10 //========================================================================== |
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11 //####ECOSGPLCOPYRIGHTBEGIN#### |
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12 // ------------------------------------------- |
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13 // This file is part of eCos, the Embedded Configurable Operating System. |
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14 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. |
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15 // |
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16 // eCos is free software; you can redistribute it and/or modify it under |
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17 // the terms of the GNU General Public License as published by the Free |
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18 // Software Foundation; either version 2 or (at your option) any later version. |
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19 // |
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20 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY |
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21 // WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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22 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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23 // for more details. |
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24 // |
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25 // You should have received a copy of the GNU General Public License along |
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26 // with eCos; if not, write to the Free Software Foundation, Inc., |
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27 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
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28 // |
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29 // As a special exception, if other files instantiate templates or use macros |
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30 // or inline functions from this file, or you compile this file and link it |
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31 // with other works to produce a work based on this file, this file does not |
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32 // by itself cause the resulting work to be covered by the GNU General Public |
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33 // License. However the source code for this file must still be made available |
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34 // in accordance with section (3) of the GNU General Public License. |
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35 // |
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36 // This exception does not invalidate any other reasons why a work based on |
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37 // this file might be covered by the GNU General Public License. |
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38 // |
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39 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. |
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40 // at http://sources.redhat.com/ecos/ecos-license |
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41 // ------------------------------------------- |
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42 //####ECOSGPLCOPYRIGHTEND#### |
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43 //========================================================================== |
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44 //#####DESCRIPTIONBEGIN#### |
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45 // |
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46 // Author(s): nickg |
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47 // Contributors: nickg |
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48 // Date: 2000-11-20 |
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49 // Purpose: Define MIPS ELF support |
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50 // Description: This file contains definitions for configuring the dynamic |
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51 // loader to deal with the MIPS specific parts of the ELF |
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52 // file format. |
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53 // |
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54 // Usage: |
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55 // #include <cyg/loader/mips_elf.h> |
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56 // ... |
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57 // |
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58 // |
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59 //####DESCRIPTIONEND#### |
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60 // |
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61 //========================================================================== |
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62 |
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63 #include <pkgconf/system.h> |
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64 #include <pkgconf/hal.h> |
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65 |
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66 |
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67 #if defined(CYGPKG_HAL_MIPS) |
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68 |
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69 #ifndef CYG_LOADER_DYNAMIC_LD |
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70 |
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71 #include <cyg/infra/cyg_type.h> |
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72 |
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73 //-------------------------------------------------------------------------- |
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74 // Basic definitions |
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75 |
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76 #define CYG_ELF_MACHINE EM_MIPS |
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77 |
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78 //-------------------------------------------------------------------------- |
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79 // Relocation types |
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80 // Taken from bfd/include/elf/mips.h - not currently sure which of these |
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81 // are actually used in executables. |
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82 |
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83 #define R_MIPS_NONE 0 |
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84 #define R_MIPS_16 1 |
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85 #define R_MIPS_32 2 |
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86 #define R_MIPS_REL32 3 |
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87 #define R_MIPS_26 4 |
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88 #define R_MIPS_HI16 5 |
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89 #define R_MIPS_LO16 6 |
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90 #define R_MIPS_GPREL16 7 |
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91 #define R_MIPS_LITERAL 8 |
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92 #define R_MIPS_GOT16 9 |
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93 #define R_MIPS_PC16 10 |
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94 #define R_MIPS_CALL16 11 |
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95 #define R_MIPS_GPREL32 12 |
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96 /* Irix and MIPS16 relocs currently omitted. */ |
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97 /* These are GNU extensions to handle embedded-pic. */ |
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98 #define R_MIPS_PC32 248 |
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99 #define R_MIPS_PC64 249 |
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100 #define R_MIPS_GNU_REL16_S2 250 |
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101 #define R_MIPS_GNU_REL_LO16 251 |
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102 #define R_MIPS_GNU_REL_HI16 252 |
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103 /* These are GNU extensions to enable C++ vtable garbage collection. */ |
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104 #define R_MIPS_GNU_VTINHERIT 253 |
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105 #define R_MIPS_GNU_VTENTRY 254 |
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106 |
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107 //-------------------------------------------------------------------------- |
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108 // Processor specific customization class for Cyg_LoadObject class. |
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109 |
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110 #ifdef __cplusplus |
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111 |
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112 class Cyg_LoadObject_Proc : |
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113 public Cyg_LoadObject_Base |
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114 { |
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115 public: |
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116 |
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117 inline Cyg_LoadObject_Proc() |
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118 : Cyg_LoadObject_Base() |
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119 { |
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120 }; |
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121 |
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122 inline Cyg_LoadObject_Proc( Cyg_LoaderStream& stream, |
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123 cyg_uint32 mode, |
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124 Cyg_LoaderMemAlloc *mem ) |
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125 : Cyg_LoadObject_Base( stream, mode, mem ) |
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126 { |
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127 }; |
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128 |
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129 inline ~Cyg_LoadObject_Proc() {}; |
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130 |
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131 cyg_code apply_rel( unsigned char type, Elf32_Word sym, Elf32_Addr offset ); |
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132 |
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133 cyg_code apply_rela( unsigned char type, Elf32_Word sym, |
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134 Elf32_Addr offset, Elf32_Sword addend ); |
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135 }; |
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136 |
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137 //-------------------------------------------------------------------------- |
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138 |
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139 inline cyg_code Cyg_LoadObject_Proc::apply_rel( unsigned char type, |
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140 Elf32_Word sym, |
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141 Elf32_Addr offset ) |
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142 { |
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143 return 0; |
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144 } |
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145 |
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146 inline cyg_code Cyg_LoadObject_Proc::apply_rela( unsigned char type, |
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147 Elf32_Word sym, |
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148 Elf32_Addr offset, |
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149 Elf32_Sword addend ) |
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150 { |
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151 return 0; |
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152 } |
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153 |
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154 |
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155 //-------------------------------------------------------------------------- |
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156 |
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157 #endif // __cplusplus |
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158 |
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159 #else // CYG_LOADER_DYNAMIC_LD |
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160 |
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161 //-------------------------------------------------------------------------- |
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162 |
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163 #define CYG_LOADER_DYNAMIC_PREFIX \ |
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164 OUTPUT_FORMAT("elf32-bigmips", "elf32-bigmips", "elf32-littlemips") \ |
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165 OUTPUT_ARCH("mips") |
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166 |
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167 |
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168 //-------------------------------------------------------------------------- |
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169 |
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170 #endif // CYG_LOADER_DYNAMIC_LD |
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171 |
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172 #endif // defined(CYGPKG_HAL_MIPS) |
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173 |
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174 //-------------------------------------------------------------------------- |
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175 #endif // ifndef CYGONCE_LOADER_MIPS_ELF_H |
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176 // End of mips_elf.h |
