1 | /*
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2 | * TOPPERS Software
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3 | * Toyohashi Open Platform for Embedded Real-Time Systems
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4 | *
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5 | * Copyright (C) 2005-2008 by TAKAGI Nobuhisa
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6 | *
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7 | * ãLì ÒÍCȺÌ(1)`(4)Ìðð½·êÉÀèC{\tgEF
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8 | * Ai{\tgEFAðüϵ½àÌðÜÞDȺ¯¶jðgpE¡»Eü
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9 | * ÏEÄzziȺCpÆÄÔj·é±Æð³Åø·éD
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10 | * (1) {\tgEFAð\[XR[hÌ`Åp·éêÉÍCãLÌì
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11 | * \¦C±Ìpð¨æÑºLÌ³ÛØKèªC»ÌÜÜÌ`Å\[
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12 | * XR[hÉÜÜêĢ鱯D
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13 | * (2) {\tgEFAðCCu`®ÈÇC¼Ì\tgEFAJÉg
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14 | * pÅ«é`ÅÄzz·éêÉÍCÄzzɺ¤hL
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15 | gip
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16 | * Ò}j
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17 | AÈÇjÉCãLÌì \¦C±Ìpð¨æÑºL
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18 | * Ì³ÛØKèðfÚ·é±ÆD
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19 | * (3) {\tgEFAðC@íÉgÝÞÈÇC¼Ì\tgEFAJÉg
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20 | * pūȢ`ÅÄzz·éêÉÍCÌ¢¸ê©Ìðð½·±
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21 | * ÆD
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22 | * (a) Äzzɺ¤hL
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23 | gipÒ}j
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24 | AÈÇjÉCãLÌ
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25 | * ì \¦C±Ìpð¨æÑºLÌ³ÛØKèðfÚ·é±ÆD
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26 | * (b) ÄzzÌ`ÔðCÊÉèßéû@ÉæÁÄCTOPPERSvWFNgÉ
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27 | * ñ·é±ÆD
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28 | * (4) {\tgEFAÌpÉæè¼ÚIܽÍÔÚIɶ¶é¢©Èé¹
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29 | * Q©çàCãLì Ò¨æÑTOPPERSvWFNgðÆÓ·é±ÆD
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30 | * ܽC{\tgEFAÌ[UܽÍGh[U©çÌ¢©Èé
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31 | * RÉîÿ©çàCãLì Ò¨æÑTOPPERSvWFNgð
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32 | * ÆÓ·é±ÆD
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33 | *
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34 | * {\tgEFAÍC³ÛØÅñ³êÄ¢éàÌÅ éDãLì Ò¨
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35 | * æÑTOPPERSvWFNgÍC{\tgEFAÉÖµÄCÁèÌgpÚI
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36 | * ÉηéK«àÜßÄC¢©ÈéÛØàsíÈ¢DܽC{\tgEF
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37 | * AÌpÉæè¼ÚIܽÍÔÚIɶ¶½¢©Èé¹QÉÖµÄàC»
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38 | * ÌÓCðíÈ¢D
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39 | *
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40 | */
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41 |
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42 | /*
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43 | * toppers/s_record.cpp
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44 | */
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45 | #include "toppers/s_record.hpp"
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46 | #include <istream>
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47 | #include <algorithm>
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48 | #include <cctype>
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49 | #include <cstring>
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50 |
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51 | namespace toppers
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52 | {
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53 |
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54 | /*!
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55 | * \brief SR[hÌ[h
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56 | * \param istr üÍXg[
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57 | */
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58 | void s_record::load( std::istream& istr )
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59 | {
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60 | int type = -1;
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61 |
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62 | while ( istr )
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63 | {
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64 | std::string buf;
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65 | std::getline( istr, buf );
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66 | if ( buf.empty() )
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67 | {
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68 | break;
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69 | }
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70 | record rec = read_record( buf );
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71 |
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72 | // Üèµ§É͵Ȣ
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73 | if ( '1' <= rec.type && rec.type <= '3' )
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74 | {
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75 | bool done = false;
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76 | typedef std::vector< value_type >::iterator iterator;
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77 | for ( iterator iter( data_.begin() ), last( data_.end() ); iter != last; ++iter )
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78 | {
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79 | if ( rec.address == iter->first + iter->second.size() )
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80 | {
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81 | std::copy( rec.data.begin(), rec.data.end(), std::back_inserter( iter->second ) );
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82 | done = true;
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83 | }
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84 | }
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85 | if ( !done )
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86 | {
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87 | data_.push_back( value_type( rec.address, std::vector< unsigned char >( rec.data.begin(), rec.data.end() ) ) );
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88 | }
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89 | }
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90 | type = rec.type;
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91 | }
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92 |
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93 | cache_ = data_.begin();
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94 | }
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95 |
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96 | /*!
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97 | * \brief wèAhXÌoCgf[^æ¾
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98 | * \param address AhXwè
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99 | * \return address Åwèµ½AhXÌoCgf[^ðÔ·
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100 | */
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101 | int s_record::operator[]( size_type address ) const
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102 | {
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103 | typedef std::vector< value_type >::const_iterator const_iterator;
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104 | if ( cache_ != data_.end() )
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105 | {
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106 | const_iterator iter( cache_ );
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107 | if ( iter->first <= address && address < iter->first + iter->second.size() )
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108 | {
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109 | return iter->second.at( address - iter->first );
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110 | }
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111 | }
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112 | for ( const_iterator iter( cache_ ), last( data_.end() ); iter != last; ++iter )
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113 | {
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114 | if ( iter->first <= address && address < iter->first + iter->second.size() )
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115 | {
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116 | cache_ = iter;
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117 | return iter->second.at( address - iter->first );
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118 | }
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119 | }
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120 | for ( const_iterator iter( data_.begin() ), last( cache_ ); iter != last; ++iter )
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121 | {
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122 | if ( iter->first <= address && address < iter->first + iter->second.size() )
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123 | {
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124 | cache_ = iter;
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125 | return iter->second.at( address - iter->first );
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126 | }
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127 | }
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128 | return -1;
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129 | }
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130 |
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131 | /*!
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132 | * \brief SR[hÌ®lÇÝÝ
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133 | * \param base ÇÝÝÊuÌæªAhX
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134 | * \param size ®lÌoCg
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135 | * \param little_endian gGfBAÈç trueArbOGfBAÈç false ðwè
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136 | * \return ÇÝñ¾®lðÔ·
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137 | */
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138 | boost::uintmax_t s_record::get_value( std::size_t base, std::size_t size, bool little_endian ) const
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139 | {
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140 | boost::uintmax_t value = 0;
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141 | if ( little_endian )
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142 | {
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143 | for ( long j = static_cast< long >( size-1 ); j >= 0; j-- )
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144 | {
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145 | int t = ( *this )[ base + j ];
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146 | if ( t < 0 )
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147 | {
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148 | throw data_error();
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149 | }
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150 | value = ( value << 8 ) | ( t & 0xff );
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151 | }
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152 | }
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153 | else
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154 | {
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155 | for ( std::size_t j = 0; j < size; j++ )
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156 | {
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157 | int t = ( *this )[ base + j ];
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158 | if ( t < 0 )
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159 | {
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160 | throw data_error();
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161 | }
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162 | value = ( value << 8 ) | ( t & 0xff );
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163 | }
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164 | }
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165 | return value;
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166 | }
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167 |
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168 | unsigned long s_record::lower_bound() const
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169 | {
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170 | return data_.front().first;
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171 | }
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172 |
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173 | unsigned long s_record::upper_bound() const
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174 | {
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175 | return data_.back().first + data_.back().second.size();
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176 | }
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177 |
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178 | /*!
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179 | * \brief SR[hÌPsÇÝÝ
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180 | * \param rec_buf Psobt@
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181 | * \return ÇÝÝÊðÔ·
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182 | */
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183 | s_record::record const s_record::read_record( std::string const& rec_buf )
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184 | {
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185 | std::string buf( rec_buf );
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186 |
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187 | // sÉ'\r'ܽÍ'\n'ªc¯µÄ¢éêÌÎô
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188 | while ( std::isspace( static_cast< unsigned char >( *buf.rbegin() ) ) )
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189 | {
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190 | buf = buf.substr( 0, buf.size()-1 );
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191 | }
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192 |
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193 | if ( buf.size() < 10 || buf[0] != 'S' )
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194 | {
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195 | throw format_error();
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196 | }
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197 | int ch = static_cast< unsigned char >( buf[1] );
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198 | int address_length = 4;
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199 | std::string::size_type size = buf.size();
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200 |
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201 | switch ( ch )
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202 | {
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203 | case '1':
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204 | case '9':
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205 | address_length = 4;
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206 | break;
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207 | case '2':
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208 | case '8':
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209 | address_length = 6;
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210 | break;
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211 | case '3':
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212 | case '7':
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213 | address_length = 8;
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214 | break;
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215 | default:
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216 | if ( !std::isdigit( static_cast< unsigned char >( ch ) ) )
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217 | {
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218 | throw format_error();
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219 | }
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220 | break;
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221 | }
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222 |
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223 | record rec;
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224 | rec.type = ch;
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225 | rec.length = xdigit_to_int( buf[2] ) << 4 | xdigit_to_int( buf[3] );
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226 | if ( rec.length * 2u + 4 != buf.size() )
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227 | {
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228 | throw format_error();
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229 | }
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230 | rec.length -= address_length/2 + 1; // AhXÆ`FbNTÌ·³ðø¢ÄAf[^·É¼·
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231 |
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232 | rec.address = 0;
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233 | int base = 4;
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234 | for ( int i = 0; i < address_length; i++ )
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235 | {
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236 | rec.address = rec.address << 4 | xdigit_to_int( buf[base+i] );
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237 | }
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238 |
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239 | base += address_length;
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240 | rec.data.reserve( rec.length );
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241 | for ( int i = 0; i < rec.length; i++ )
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242 | {
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243 | rec.data.push_back( static_cast< unsigned char >( xdigit_to_int( buf[base+i*2] ) << 4 | xdigit_to_int( buf[base+i*2+1] ) ) );
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244 | }
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245 |
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246 | rec.checksum = xdigit_to_int( buf[size-2] ) << 4 | xdigit_to_int( buf[size-1] );
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247 |
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248 | // `FbNT»èÍȪ
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249 |
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250 | return rec;
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251 | }
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252 |
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253 | /*!
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254 | * \brief \Zi©çlÖÌÏ·
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255 | * \param ch \Zii¶j
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256 | * \return ch Éηél
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257 | */
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258 | int s_record::xdigit_to_int( int ch )
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259 | {
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260 | static char const xdigits[] = "0123456789abcdef";
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261 |
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262 | ch = std::tolower( static_cast< unsigned char >( ch ) );
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263 | char const* s = std::strchr( xdigits, ch );
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264 | if ( s == 0 )
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265 | {
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266 | return -1;
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267 | }
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268 | return s - xdigits;
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269 | }
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270 |
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271 | }
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