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annotate packages/services/loader/current/include/ppc_elf.h @ 3292:7f8e529b4d82 default tip

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Fix FREESCALE_EDMA_NBYTES_MLOFFYES_MLOFF() so it works with negative offsets.
author vae
date Wed, 29 Apr 2015 23:31:48 +0000
parents 74dbf4c3f2e1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #ifndef CYGONCE_LOADER_PPC_ELF_H
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2 #define CYGONCE_LOADER_PPC_ELF_H
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3
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4 //==========================================================================
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5 //
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6 // ppc_elf.h
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7 //
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8 // PowerPC 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 Free Software Foundation, 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
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19 // version.
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20 //
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21 // eCos is distributed in the hope that it will be useful, but WITHOUT
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22 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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23 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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24 // for more details.
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25 //
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26 // You should have received a copy of the GNU General Public License
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27 // along with eCos; if not, write to the Free Software Foundation, Inc.,
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28 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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29 //
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30 // As a special exception, if other files instantiate templates or use
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31 // macros or inline functions from this file, or you compile this file
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32 // and link it with other works to produce a work based on this file,
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33 // this file does not by itself cause the resulting work to be covered by
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34 // the GNU General Public License. However the source code for this file
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35 // must still be made available in accordance with section (3) of the GNU
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36 // General Public License v2.
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37 //
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38 // This exception does not invalidate any other reasons why a work based
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39 // on this file might be covered by the GNU General Public License.
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40 // -------------------------------------------
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41 // ####ECOSGPLCOPYRIGHTEND####
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42 //==========================================================================
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43 //#####DESCRIPTIONBEGIN####
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44 //
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45 // Author(s): nickg
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46 // Contributors: nickg
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47 // Date: 2000-11-20
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48 // Purpose: Define PowerPC ELF support
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49 // Description: This file contains definitions for configuring the dynamic
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50 // loader to deal with the PowerPC specific parts of the ELF
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51 // file format.
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52 //
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53 // Usage:
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54 // #include <cyg/loader/ppc_elf.h>
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55 // ...
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56 //
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57 //
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58 //####DESCRIPTIONEND####
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59 //
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60 //==========================================================================
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61
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62 #include <pkgconf/system.h>
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63 #include <pkgconf/hal.h>
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64
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65 #if defined(CYGPKG_HAL_POWERPC)
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66
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67 #ifndef CYG_LOADER_DYNAMIC_LD
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68
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69 #include <cyg/infra/cyg_type.h>
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70
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71 //--------------------------------------------------------------------------
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72 // Basic definitions
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73
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74 #define CYG_ELF_MACHINE EM_PPC
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75
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76 //--------------------------------------------------------------------------
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77 // Relocation types
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78 // Taken from binutils/include/elf/ppc.h - not currently sure which
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79 // of these are actually used in executables.
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80
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81
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82 #define R_PPC_NONE 0
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83 #define R_PPC_ADDR32 1
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84 #define R_PPC_ADDR24 2
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85 #define R_PPC_ADDR16 3
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86 #define R_PPC_ADDR16_LO 4
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87 #define R_PPC_ADDR16_HI 5
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88 #define R_PPC_ADDR16_HA 6
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89 #define R_PPC_ADDR14 7
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90 #define R_PPC_ADDR14_BRTAKEN 8
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91 #define R_PPC_ADDR14_BRNTAKEN 9
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92 #define R_PPC_REL24 10
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93 #define R_PPC_REL14 11
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94 #define R_PPC_REL14_BRTAKEN 12
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95 #define R_PPC_REL14_BRNTAKEN 13
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96 #define R_PPC_GOT16 14
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97 #define R_PPC_GOT16_LO 15
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98 #define R_PPC_GOT16_HI 16
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99 #define R_PPC_GOT16_HA 17
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100 #define R_PPC_PLTREL24 18
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101 #define R_PPC_COPY 19
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102 #define R_PPC_GLOB_DAT 20
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103 #define R_PPC_JMP_SLOT 21
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104 #define R_PPC_RELATIVE 22
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105 #define R_PPC_LOCAL24PC 23
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106 #define R_PPC_UADDR32 24
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107 #define R_PPC_UADDR16 25
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108 #define R_PPC_REL32 26
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109 #define R_PPC_PLT32 27
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110 #define R_PPC_PLTREL32 28
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111 #define R_PPC_PLT16_LO 29
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112 #define R_PPC_PLT16_HI 30
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113 #define R_PPC_PLT16_HA 31
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114 #define R_PPC_SDAREL16 32
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115 #define R_PPC_SECTOFF 33
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116 #define R_PPC_SECTOFF_LO 34
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117 #define R_PPC_SECTOFF_HI 35
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118 #define R_PPC_SECTOFF_HA 36
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119
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120 /* The remaining relocs are from the Embedded ELF ABI, and are not
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121 in the SVR4 ELF ABI. */
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122 #define R_PPC_EMB_NADDR32 101
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123 #define R_PPC_EMB_NADDR16 102
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124 #define R_PPC_EMB_NADDR16_LO 103
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125 #define R_PPC_EMB_NADDR16_HI 104
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126 #define R_PPC_EMB_NADDR16_HA 105
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127 #define R_PPC_EMB_SDAI16 106
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128 #define R_PPC_EMB_SDA2I16 107
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129 #define R_PPC_EMB_SDA2REL 108
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130 #define R_PPC_EMB_SDA21 109
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131 #define R_PPC_EMB_MRKREF 110
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132 #define R_PPC_EMB_RELSEC16 111
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133 #define R_PPC_EMB_RELST_LO 112
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134 #define R_PPC_EMB_RELST_HI 113
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135 #define R_PPC_EMB_RELST_HA 114
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136 #define R_PPC_EMB_BIT_FLD 115
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137 #define R_PPC_EMB_RELSDA 116
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138
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139 /* These are GNU extensions to enable C++ vtable garbage collection. */
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140 #define R_PPC_GNU_VTINHERIT 253
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141 #define R_PPC_GNU_VTENTRY 254
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142
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143 /* This is a phony reloc to handle any old fashioned TOC16 references
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144 that may still be in object files. */
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145 #define R_PPC_TOC16 255
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146
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147
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148 //--------------------------------------------------------------------------
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149 // Processor specific customization class for Cyg_LoadObject class.
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150
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151 #ifdef __cplusplus
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152
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153 class Cyg_LoadObject_Proc :
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154 public Cyg_LoadObject_Base
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155 {
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156 public:
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157
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158 inline Cyg_LoadObject_Proc()
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159 : Cyg_LoadObject_Base()
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160 {
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161 };
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162
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163 inline Cyg_LoadObject_Proc( Cyg_LoaderStream& stream,
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164 cyg_uint32 mode,
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165 Cyg_LoaderMemAlloc *mem )
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166 : Cyg_LoadObject_Base( stream, mode, mem )
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167 {
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168 };
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169
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170 inline ~Cyg_LoadObject_Proc() {};
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171
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172 cyg_code apply_rel( unsigned char type, Elf32_Word sym, Elf32_Addr offset );
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173
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174 cyg_code apply_rela( unsigned char type, Elf32_Word sym,
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175 Elf32_Addr offset, Elf32_Sword addend );
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176 };
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177
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178 //--------------------------------------------------------------------------
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179
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180 inline cyg_code Cyg_LoadObject_Proc::apply_rel( unsigned char type,
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181 Elf32_Word sym,
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182 Elf32_Addr offset )
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183 {
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184 return 0;
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185 }
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186
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187 inline cyg_code Cyg_LoadObject_Proc::apply_rela( unsigned char type,
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188 Elf32_Word sym,
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189 Elf32_Addr offset,
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190 Elf32_Sword addend )
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191 {
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192 return 0; // CYG_LOADERR_INVALID_RELOC;
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193 }
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194
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195 //--------------------------------------------------------------------------
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196
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197 externC void abort() CYGBLD_ATTRIB_WEAK;
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198
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199 externC void abort() { for(;;); }
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200
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201 externC int strcmp(const char *a, const char *b) CYGBLD_ATTRIB_WEAK;
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202
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203 externC int strcmp(const char *a, const char *b) { return a==b; }
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204
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205 externC unsigned int strlen(const char *a) CYGBLD_ATTRIB_WEAK;
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206
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207 externC unsigned int strlen(const char *a) { return 1; }
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208
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209 //--------------------------------------------------------------------------
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210
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211 #endif // __cplusplus
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212
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213 #else // CYG_LOADER_DYNAMIC_LD
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214
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215 //--------------------------------------------------------------------------
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216
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217 #define CYG_LOADER_DYNAMIC_PREFIX \
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218 OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc") \
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219 OUTPUT_ARCH("powerpc")
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220
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221 /* Adjust the address for the data segment. We want to adjust up to
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222 the same address within the page on the next page up. */
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223 #define CYG_LOADER_DYNAMIC_DATA_ALIGN \
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224 . = ALIGN(0x1000) + (. & (0x1000 - 1));
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225
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226 //--------------------------------------------------------------------------
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227
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228 #endif // CYG_LOADER_DYNAMIC_LD
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229
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230 #endif // defined(CYGPKG_HAL_POWERPC) && __cplusplus
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231
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232 //--------------------------------------------------------------------------
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233 #endif // ifndef CYGONCE_LOADER_PPC_ELF_H
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234 // End of ppc_elf.h