1 | /*------------------------------------------------------------\ |
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2 | | | |
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3 | | Tool : systemcass | |
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4 | | | |
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5 | | File : entity.cc | |
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6 | | | |
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7 | | Author : Buchmann Richard | |
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8 | | Taktak Sami | |
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9 | | | |
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10 | | Date : 09_07_2004 | |
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11 | | | |
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12 | \------------------------------------------------------------*/ |
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13 | |
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14 | /* |
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15 | * This file is part of the Disydent Project |
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16 | * Copyright (C) Laboratoire LIP6 - Département ASIM |
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17 | * Universite Pierre et Marie Curie |
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18 | * |
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19 | * Home page : http://www-asim.lip6.fr/disydent |
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20 | * E-mail : mailto:richard.buchmann@lip6.fr |
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21 | * |
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22 | * This library is free software; you can redistribute it and/or modify it |
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23 | * under the terms of the GNU Library General Public License as published |
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24 | * by the Free Software Foundation; either version 2 of the License, or (at |
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25 | * your option) any later version. |
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26 | * |
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27 | * Disydent is distributed in the hope that it will be |
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28 | * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of |
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29 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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30 | * Public License for more details. |
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31 | * |
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32 | * You should have received a copy of the GNU General Public License along |
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33 | * with the GNU C Library; see the file COPYING. If not, write to the Free |
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34 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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35 | */ |
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36 | |
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37 | #include<iomanip> |
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38 | #include<list> |
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39 | #include<map> |
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40 | #include<vector> |
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41 | |
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42 | #include"assert.h" |
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43 | #include"entity.h" |
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44 | #include"sc_port.h" |
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45 | #include"sc_signal.h" |
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46 | #include"sc_module.h" |
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47 | |
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48 | using namespace std; |
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49 | |
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50 | namespace sc_core { |
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51 | equi_list_t equi_list; |
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52 | equi_table_t equi_table = NULL; |
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53 | |
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54 | ostream& operator << (ostream &, const entity &); |
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55 | ostream& operator << (ostream &, const equi_t &); |
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56 | |
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57 | struct predic4entity2equi_t_t |
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58 | { |
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59 | bool operator()(const entity &e1, const entity &e2) const |
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60 | { |
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61 | return e1.interface < e2.interface; |
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62 | } |
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63 | }; |
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64 | |
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65 | typedef std::map<entity,equi_list_t::iterator,predic4entity2equi_t_t> entity2equi_it_t; |
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66 | |
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67 | ostream& operator << (ostream& o, const entity2equi_it_t &m) |
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68 | { |
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69 | entity2equi_it_t::const_iterator i; |
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70 | for (i = m.begin(); i != m.end(); ++i) |
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71 | { |
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72 | o << (i->first) << " : " << *(i->second) << "\n"; |
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73 | } |
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74 | return o; |
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75 | } |
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76 | entity2equi_it_t equi_map; |
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77 | |
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78 | const equi_list_t& get_equi_list () |
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79 | { |
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80 | return equi_list; |
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81 | } |
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82 | |
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83 | unsigned int |
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84 | max (unsigned int a, unsigned int b) |
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85 | { |
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86 | return (a > b)?a:b; |
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87 | } |
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88 | |
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89 | static |
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90 | int get_signal_table_size (const equi_list_t &e) |
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91 | { |
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92 | // bug fix : remove the 0x0 equi from the list |
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93 | equi_list_t::const_iterator i; |
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94 | int capacity = 0; |
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95 | for (i = e.begin (); i != e.end (); ++i) { |
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96 | //cerr << i->begin()->object->name (); |
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97 | const entity &ent = *(i->begin()); |
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98 | int data_size = ent.data_size_in_bytes(); |
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99 | int number_of_part = ((data_size - 1) / sizeof(tab_t)) + 1; |
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100 | capacity += number_of_part; |
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101 | } |
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102 | return capacity; |
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103 | } |
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104 | |
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105 | int get_signal_table_size () |
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106 | { |
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107 | return get_signal_table_size (equi_list); |
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108 | } |
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109 | |
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110 | sc_port_base* |
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111 | get_out_port (const equi_t &eq) |
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112 | { |
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113 | equi_t::const_iterator i; |
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114 | for (i = eq.begin (); i != eq.end (); ++i) { |
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115 | const char *type = i->kind (); |
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116 | if ((type == sc_core::sc_out_string)||(type == sc_core::sc_inout_string)) |
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117 | return i->port; |
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118 | } |
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119 | /* |
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120 | cerr << "Internal error : can't find out port in " |
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121 | << eq << ".\n"; |
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122 | exit(32); |
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123 | */ |
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124 | return NULL; |
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125 | } |
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126 | |
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127 | static |
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128 | sc_port_base* |
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129 | get_localvar (equi_t &eq) |
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130 | { |
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131 | equi_t::iterator i; |
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132 | for (i = eq.begin (); i != eq.end (); ++i) { |
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133 | const char *type = i->kind (); |
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134 | if (strcmp (type, "sc_localvar") == 0) |
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135 | return i->port; |
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136 | } |
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137 | return NULL; |
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138 | } |
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139 | |
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140 | static |
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141 | sc_port_base* |
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142 | get_signal (equi_t &eq) |
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143 | { |
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144 | equi_t::iterator i; |
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145 | for (i = eq.begin (); i != eq.end (); ++i) { |
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146 | const char *type = i->kind (); |
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147 | if (strcmp (type, "sc_signal") == 0) |
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148 | return i->port; |
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149 | } |
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150 | return NULL; |
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151 | } |
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152 | |
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153 | equi_t& |
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154 | get_equi (const sc_interface &i) |
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155 | { |
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156 | return get_equi (i.get_pointer ()); |
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157 | } |
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158 | |
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159 | struct predic4tab_t2equi_t_t |
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160 | { |
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161 | bool operator()(const tab_t *t1, const tab_t *t2) const |
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162 | { |
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163 | return t1 < t2; |
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164 | } |
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165 | }; |
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166 | |
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167 | #define get_equi_SPEEDUP |
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168 | equi_t& |
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169 | get_equi (const tab_t *pointer) |
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170 | { |
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171 | // result variable |
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172 | equi_list_t::iterator i; |
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173 | #if defined(get_equi_SPEEDUP) |
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174 | typedef std::map<const tab_t *,equi_list_t::iterator,predic4tab_t2equi_t_t> tab_t2equi_it_t; |
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175 | static tab_t2equi_it_t tab2equi_map; |
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176 | ASSERT(pointer != NULL); |
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177 | |
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178 | // boost |
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179 | tab_t2equi_it_t::/*const_*/iterator it = tab2equi_map.find (pointer); |
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180 | if (it != tab2equi_map.end ()) |
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181 | { |
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182 | i = it->second; |
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183 | return *i; |
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184 | } |
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185 | #endif |
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186 | // |
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187 | for (i = equi_list.begin (); i != equi_list.end (); ++i) { |
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188 | const equi_t::iterator &j = i->begin(); |
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189 | const entity &e = *j; |
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190 | const sc_interface *f = e.interface; |
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191 | const tab_t *p = f->get_pointer (); |
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192 | if (p == pointer) |
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193 | { |
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194 | #if defined(get_equi_SPEEDUP) |
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195 | tab2equi_map[pointer] = i; |
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196 | #endif |
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197 | return *i; |
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198 | } |
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199 | } |
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200 | cerr << "Internal error : get_equi(" << pointer << ")\n"; |
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201 | exit (11); |
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202 | } |
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203 | #undef get_equi_SPEEDUP |
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204 | |
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205 | bool |
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206 | has_equi (/*const*/ sc_port_base &port) |
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207 | { |
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208 | entity e(port); |
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209 | entity2equi_it_t::/*const_*/iterator it = equi_map.find (e); |
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210 | if (it == equi_map.end ()) |
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211 | { |
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212 | return false; |
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213 | } |
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214 | return true; |
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215 | } |
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216 | |
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217 | static |
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218 | bool |
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219 | is_register (const equi_t &eq) |
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220 | { |
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221 | return eq.size () == 1; |
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222 | } |
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223 | |
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224 | static |
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225 | int |
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226 | count_level (const char *s, char c) |
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227 | { |
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228 | int i; |
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229 | int counter = 0; |
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230 | for (i = 0; s[i] != '\0'; ++i) { |
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231 | if (s[i] == c) |
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232 | ++counter; |
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233 | } |
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234 | return counter; |
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235 | } |
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236 | |
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237 | const char* |
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238 | get_name (const equi_t& e) |
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239 | { |
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240 | equi_t::const_iterator top_iter = e.begin (); |
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241 | #ifdef DEBUG |
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242 | if (top_iter == e.end ()) { |
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243 | cerr << "Internal error : no signal in " << e << endl; |
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244 | exit (25); |
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245 | } |
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246 | if (top_iter->object == NULL) { |
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247 | cerr << "Internal error : no object bound to "; |
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248 | cerr << *top_iter; |
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249 | cerr << endl; |
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250 | exit (26); |
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251 | } |
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252 | if (top_iter->object->name () == NULL) { |
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253 | cerr << "Internal error : signal has no name.\n"; |
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254 | cerr << *top_iter; |
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255 | cerr << endl; |
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256 | } |
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257 | #endif |
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258 | int top_level = count_level (top_iter->object->name (),'.'); |
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259 | equi_t::const_iterator i; |
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260 | for (i = ++(e.begin ()); i != e.end (); ++i) { |
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261 | int current_level = count_level (i->object->name (),'.'); |
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262 | if (current_level < top_level) { |
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263 | top_iter = i; |
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264 | top_level = current_level; |
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265 | } |
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266 | } |
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267 | #if 0 |
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268 | cerr << "get_name of " << e; |
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269 | cerr << " return " << top_iter->object->name () << endl; |
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270 | #endif |
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271 | return top_iter->object->name (); |
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272 | } |
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273 | |
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274 | const char* |
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275 | get_name (const tab_t *pointer) |
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276 | { |
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277 | return get_name (get_equi (pointer)); |
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278 | } |
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279 | |
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280 | static |
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281 | const sc_module& |
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282 | get_module (const string &s) |
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283 | { |
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284 | instances_set_t::iterator i; |
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285 | for (i = instances_set.begin (); i != instances_set.end (); ++i) { |
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286 | if (strcmp ((*i)->name (), s.c_str ()) == 0) |
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287 | return **i; |
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288 | } |
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289 | cerr << "Internal error : get_module\n"; |
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290 | exit (27); |
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291 | } |
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292 | |
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293 | template<typename T> static |
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294 | equi_list_t::iterator get_equi (T &e) |
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295 | { |
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296 | entity2equi_it_t::iterator it = equi_map.find (entity(e)); |
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297 | if (it == equi_map.end()) |
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298 | { |
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299 | // cerr << "Internal error : get_equi (T &)"; |
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300 | return equi_list.end (); |
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301 | } |
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302 | return it->second; |
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303 | } |
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304 | |
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305 | template<typename T> static |
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306 | void |
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307 | add_equi (equi_list_t::iterator &x, T &y) |
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308 | { |
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309 | entity e(y); |
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310 | x->push_back (e); |
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311 | equi_map[e] = x; |
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312 | } |
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313 | |
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314 | template<typename T> static |
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315 | equi_list_t::iterator |
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316 | new_equi (T &x) /* parameter is not 'const' because we need to modify pointer port/signal at end of elaboration step */ |
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317 | { |
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318 | equi_list_t::iterator it = equi_list.insert (equi_list.begin (),equi_t(1,entity(x))); |
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319 | equi_map[entity(x)] = it; |
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320 | return it; |
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321 | } |
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322 | |
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323 | // sort by number of connected ports bound to the signal |
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324 | static |
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325 | int |
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326 | operator<(const equi_t &e1, const equi_t &e2) |
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327 | { |
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328 | return (e1.size() < e2.size ()); |
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329 | } |
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330 | |
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331 | // sort by data size |
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332 | /* |
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333 | int operator<(const equi_t &e1, const equi_t &e2) |
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334 | { |
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335 | return (e1.begin()->data_size () < e2.begin()->data_size ()); |
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336 | } |
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337 | */ |
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338 | // random sort |
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339 | /* |
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340 | int operator<(const equi_t &e1, const equi_t &e2) |
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341 | { |
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342 | typedef std::map<const equi_t*,int> m_t; |
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343 | static m_t m; |
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344 | if (m[&e1] == 0) |
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345 | m[&e1] = rand (); |
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346 | if (m[&e2] == 0) |
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347 | m[&e2] = rand (); |
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348 | return m[&e1] < m[&e2]; |
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349 | } |
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350 | */ |
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351 | void sort_equi_list () |
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352 | { |
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353 | //load (); |
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354 | equi_list.sort (); |
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355 | //equi_list.reverse (); |
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356 | } |
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357 | |
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358 | #if defined(DUMP_SIGNALS_STATS) |
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359 | static unsigned int equi_real_size; |
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360 | #endif |
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361 | |
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362 | unsigned int |
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363 | get_sizeof_signals_table () |
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364 | { |
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365 | equi_list_t::iterator i; |
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366 | int table_size = 0; |
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367 | //cerr << "external table includes :\n"; |
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368 | for (i = equi_list.begin (); i != equi_list.end (); ++i) { |
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369 | if (get_out_port (*i)) |
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370 | continue; |
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371 | if (get_signal (*i)) |
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372 | continue; |
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373 | //cerr << get_name (*i) << " "; |
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374 | const entity &ent = *(i->begin()); |
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375 | int data_size = ent.data_size_in_bytes(); |
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376 | int number_of_part = ((data_size - 1) / sizeof(tab_t)) + 1; |
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377 | table_size += number_of_part; |
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378 | } |
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379 | return table_size; |
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380 | } |
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381 | |
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382 | void |
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383 | create_signals_table () |
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384 | { |
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385 | if (dump_stage) |
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386 | cerr << "Allocating signals table.\n"; |
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387 | //cerr << "\n"; |
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388 | unsigned int table_size = get_sizeof_signals_table (); |
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389 | equi_table = new tab_t[table_size]; //(0xCD); |
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390 | #if defined(DUMP_SIGNALS_STATS) |
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391 | equi_real_size = table_size; |
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392 | #endif |
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393 | #if defined(INIT_SIGNALS_TO_ZERO) |
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394 | memset (equi_table, 0, sizeof (tab_t) * table_size); |
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395 | #else |
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396 | memset (equi_table, 0xCD, sizeof (tab_t) * table_size); |
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397 | #endif |
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398 | } |
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399 | |
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400 | static |
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401 | void |
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402 | bind_equi_to_table (equi_t &e, tab_t * const pointer) |
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403 | { |
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404 | ASSERT(pointer != NULL); |
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405 | equi_t::iterator i; |
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406 | for (i = e.begin (); i != e.end (); ++i) { |
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407 | sc_interface *const inter = i->interface; |
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408 | inter->set_pointer (pointer); |
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409 | // We can't initialize data to zero there |
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410 | // because we can't write the right amount of bits. |
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411 | // It may produce some segmentation fault errors. |
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412 | // The pointer is aligned to 32 bits. |
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413 | } |
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414 | } |
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415 | |
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416 | void |
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417 | bind_to_table () |
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418 | { |
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419 | if (dump_stage) |
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420 | cerr << "Binding ports/signals to the table.\n"; |
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421 | equi_list_t::iterator i; |
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422 | int index = 0; |
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423 | for (i = equi_list.begin (); i != equi_list.end (); ++i) { |
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424 | sc_interface *out = get_out_port (*i); |
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425 | if (out) { |
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426 | bind_equi_to_table (*i, out->get_pointer ()); |
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427 | } else { |
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428 | sc_interface *reg = get_signal (*i); |
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429 | if (reg == NULL) |
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430 | reg = get_localvar (*i); |
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431 | if (reg) { |
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432 | bind_equi_to_table (*i, reg->get_pointer ()); |
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433 | } else { |
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434 | bind_equi_to_table (*i, &(equi_table[index])); |
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435 | index += (i->begin()->data_size_in_bytes() - 1) / sizeof(tab_t) + 1; |
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436 | } |
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437 | } |
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438 | } |
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439 | } |
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440 | |
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441 | ostream& |
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442 | operator << (ostream &o, const entity &e) |
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443 | { |
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444 | #if 0 |
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445 | o << "entity ("; |
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446 | if (e.object) |
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447 | o << e.object->name (); |
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448 | else |
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449 | o << "no object"; |
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450 | if (e.interface) |
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451 | o << ", pointer = 0x" << hex << e.interface->get_pointer (); |
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452 | else |
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453 | o << ", no interface"; |
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454 | o << ")"; |
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455 | #else |
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456 | ASSERT(e.object != NULL); |
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457 | o << e.object->name (); |
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458 | #endif |
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459 | return o; |
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460 | } |
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461 | |
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462 | ostream& |
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463 | operator << (ostream &o, const equi_t &e) |
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464 | { |
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465 | bool nb = 0; |
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466 | equi_t::const_iterator i; |
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467 | for (i = e.begin (); i != e.end (); ++i) { |
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468 | const entity &ity = *i; |
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469 | o << ((nb++)?" = ":"") << ity; |
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470 | } |
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471 | return o; |
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472 | } |
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473 | |
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474 | void |
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475 | print_table (ostream &o) |
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476 | { |
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477 | o << "Signal list\n" |
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478 | << "-----------\n"; |
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479 | equi_list_t::const_iterator i; |
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480 | for (i = equi_list.begin (); i != equi_list.end (); ++i) { |
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481 | const equi_t &eq = *i; |
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482 | #if 0 |
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483 | o << i->begin()->interface->get_pointer () << " : "; |
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484 | o << (*i); |
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485 | o << "\n"; |
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486 | #else |
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487 | o << "(" << get_name (eq) << ") <=> " << eq << ".\n"; |
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488 | #endif |
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489 | } |
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490 | } |
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491 | |
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492 | void |
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493 | print_table_stats (ostream &o) |
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494 | { |
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495 | #if defined(DUMP_SIGNALS_STATS) |
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496 | int nb_reg = 0; |
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497 | int nb_sig = 0; |
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498 | int real_size = 0; |
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499 | |
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500 | // count |
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501 | equi_list_t::const_iterator i; |
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502 | int num; |
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503 | for (num = 0, i = equi_list.begin (); i != equi_list.end (); ++num, ++i) { |
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504 | if (is_register (*i)) |
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505 | ++nb_reg; |
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506 | else |
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507 | ++nb_sig; |
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508 | } |
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509 | |
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510 | // print results |
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511 | o << "Statistics :\n"; |
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512 | o << "#registers : " << nb_reg << endl; |
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513 | o << "#signals : " << nb_sig << endl; |
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514 | o << "current table size : " << equi_real_size << endl; |
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515 | #endif |
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516 | } |
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517 | |
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518 | #ifdef DUMP_SIGNAL_STATS |
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519 | typedef map<tab_t*,long long int> counter_t; |
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520 | static counter_t counter; |
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521 | long long int unnecessary = 0; |
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522 | long long int total_assig = 0; |
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523 | #endif |
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524 | |
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525 | const char* |
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526 | get_module_name (const equi_t &eq) |
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527 | { |
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528 | if (!is_register (eq)) { |
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529 | /* |
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530 | cerr << "get_module_name doesn't work yet upon non-register.\n"; |
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531 | |
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532 | const sc_port_base &port = *(i->port); |
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533 | const sc_module &module = port.get_module (); |
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534 | */ |
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535 | return "top_level"; |
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536 | } |
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537 | const entity &ent = *(eq.begin ()); |
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538 | #ifdef DEBUG |
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539 | if (ent.type != sc_core::entity::SIGNAL) |
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540 | exit(28); |
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541 | #endif |
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542 | // get module name from sc_signal used like a register |
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543 | const char *sig_name = ent.object->name (); |
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544 | const char *sep = strchr (sig_name,'.'); |
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545 | #ifdef DEBUG |
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546 | if (sep == NULL) { |
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547 | exit (30); |
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548 | } |
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549 | #endif |
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550 | int end_pos = sep - sig_name; |
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551 | string module_name (sig_name, end_pos); |
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552 | // can't return the char* pointer from string since it will be invalid. |
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553 | return get_module (module_name).name (); |
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554 | } |
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555 | |
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556 | static |
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557 | void |
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558 | merge_equi (equi_list_t::iterator &x, equi_list_t::iterator &y) |
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559 | { |
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560 | equi_t::iterator i; |
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561 | equi_t &y2 = *y; |
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562 | for (i = y2.begin(); i != y2.end(); ++i) |
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563 | { |
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564 | entity &e = *i; |
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565 | equi_map[e] = x; |
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566 | } |
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567 | |
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568 | x->merge (*y); |
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569 | equi_list.erase (y); |
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570 | } |
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571 | |
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572 | // sort by data size |
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573 | #ifdef DATASIZE_SORT |
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574 | int |
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575 | operator<(const equi_t &e1, const equi_t &e2) |
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576 | { |
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577 | return (e1.begin()->data_size () < e2.begin()->data_size ()); |
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578 | } |
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579 | #endif |
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580 | |
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581 | // random sort |
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582 | #ifdef RANDOM_SORT |
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583 | int |
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584 | operator<(const equi_t &e1, const equi_t &e2) |
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585 | { |
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586 | typedef std::map<const equi_t*,int> m_t; |
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587 | static m_t m; |
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588 | if (m[&e1] == 0) |
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589 | m[&e1] = rand (); |
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590 | if (m[&e2] == 0) |
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591 | m[&e2] = rand (); |
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592 | return m[&e1] < m[&e2]; |
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593 | } |
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594 | #endif |
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595 | |
---|
596 | #if defined(DUMP_SIGNALS_STATS) |
---|
597 | static unsigned int equi_real_size; |
---|
598 | #endif |
---|
599 | |
---|
600 | void |
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601 | bind (sc_signal_base &x) |
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602 | { |
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603 | #if 0 |
---|
604 | //defined(DEBUG) |
---|
605 | equi_list_t::iterator x_equi = get_equi (x); |
---|
606 | if ((x_equi != equi_list.end())) { |
---|
607 | cerr << "Internal error : Signal already in the table\n"; |
---|
608 | return; |
---|
609 | } |
---|
610 | #endif |
---|
611 | new_equi (x); |
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612 | } |
---|
613 | |
---|
614 | void |
---|
615 | bind (sc_port_base &x) |
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616 | { |
---|
617 | new_equi (x); |
---|
618 | } |
---|
619 | |
---|
620 | template <typename T> static |
---|
621 | void |
---|
622 | test_before_bind (sc_port_base& p1,T& p2) |
---|
623 | { |
---|
624 | bool t1 = (p1.kind () != NULL); |
---|
625 | bool t2 = (p2.kind () != NULL); |
---|
626 | if (t1 && t2) |
---|
627 | return; |
---|
628 | if (t1 == true) |
---|
629 | cerr << "Trying to bind '" << p1.name() << "' to an unknown type.\n"; |
---|
630 | else if (t2 == true) |
---|
631 | cerr << "Trying to bind '" << p2.name() << "' to an unknown type.\n"; |
---|
632 | else |
---|
633 | cerr << "Binding failed. Please check the netlist description.\n"; |
---|
634 | exit (20040525); |
---|
635 | } |
---|
636 | |
---|
637 | template <typename T> static |
---|
638 | void |
---|
639 | tbind (sc_port_base &x,T &y) |
---|
640 | { |
---|
641 | // ASSERT(x.get_pointer () != NULL); // x pointer may be NULL |
---|
642 | // ASSERT(y.get_pointer () != NULL); // y pointer may be NULL |
---|
643 | equi_list_t::iterator x_equi = get_equi (x); |
---|
644 | equi_list_t::iterator y_equi = get_equi (y); |
---|
645 | if ((x_equi != equi_list.end()) && (y_equi != equi_list.end())) { |
---|
646 | // 2 equipotentials are equals |
---|
647 | merge_equi (x_equi, y_equi); |
---|
648 | } else if ((x_equi != equi_list.end())) { |
---|
649 | // add y |
---|
650 | add_equi (x_equi,y); |
---|
651 | } else if ((y_equi != equi_list.end())) { |
---|
652 | // add y |
---|
653 | add_equi (y_equi,x); |
---|
654 | } else { |
---|
655 | // add a new equi |
---|
656 | x_equi = new_equi (x); |
---|
657 | add_equi (x_equi, y); |
---|
658 | } |
---|
659 | } |
---|
660 | |
---|
661 | void |
---|
662 | bind (sc_port_base& p1,sc_port_base& p2) |
---|
663 | { test_before_bind (p1, p2); tbind (p1, p2); } |
---|
664 | |
---|
665 | void |
---|
666 | bind (sc_port_base& p1,sc_signal_base& s1) |
---|
667 | { test_before_bind (p1, s1); tbind (p1, s1); } |
---|
668 | |
---|
669 | |
---|
670 | } // end of sc_core namespace |
---|
671 | |
---|