1 | #ifndef morpheo_behavioural_core_multi_ooo_engine_ooo_engine_rename_unit_register_translation_unit_stat_list_unit_Types_h |
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2 | #define morpheo_behavioural_core_multi_ooo_engine_ooo_engine_rename_unit_register_translation_unit_stat_list_unit_Types_h |
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3 | |
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4 | /* |
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5 | * $Id: Types.h 88 2008-12-10 18:31:39Z rosiere $ |
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6 | * |
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7 | * [ Description ] |
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8 | * |
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9 | */ |
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10 | |
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11 | #include "Behavioural/include/Types.h" |
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12 | |
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13 | namespace morpheo { |
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14 | namespace behavioural { |
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15 | |
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16 | namespace core { |
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17 | namespace multi_ooo_engine { |
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18 | namespace ooo_engine { |
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19 | namespace rename_unit { |
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20 | namespace register_translation_unit { |
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21 | namespace stat_list_unit { |
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22 | |
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23 | class stat_list_entry_t |
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24 | { |
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25 | public : bool _is_free ; // set = is present in free list |
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26 | public : bool _is_link ; // set = is present in rat |
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27 | public : bool _is_valid; // set = an instruction have write in this register |
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28 | public : uint32_t _counter ; // number of register that must read this register |
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29 | |
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30 | public : stat_list_entry_t (void) {}; |
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31 | public : ~stat_list_entry_t (void) {}; |
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32 | |
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33 | public : void reset (bool is_link) |
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34 | { |
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35 | _is_free = 0; |
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36 | _is_link = is_link; |
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37 | _is_valid = 1; |
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38 | _counter = 0; |
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39 | } |
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40 | |
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41 | public : void insert_read (void) |
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42 | { |
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43 | _counter ++; |
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44 | } |
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45 | public : void insert_write (void) |
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46 | { |
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47 | _is_free = 0; |
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48 | _is_link = 1; |
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49 | _is_valid = 0; |
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50 | } |
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51 | |
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52 | public : void retire_read (void) |
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53 | { |
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54 | _counter --; |
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55 | } |
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56 | |
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57 | public : void retire_write_old (bool restore_old) |
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58 | { |
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59 | if (not restore_old) |
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60 | { |
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61 | _is_link = 0; |
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62 | } |
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63 | // else nothing |
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64 | } |
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65 | |
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66 | public : void retire_write_new (bool restore_old) |
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67 | { |
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68 | if (restore_old) |
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69 | { |
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70 | _is_link = 0; |
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71 | } |
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72 | |
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73 | // in all case |
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74 | _is_valid = 1; |
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75 | } |
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76 | |
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77 | public : void free (void) |
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78 | { |
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79 | _is_free = 1; |
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80 | } |
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81 | |
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82 | public : bool can_insert_read (uint32_t max_reader) |
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83 | { |
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84 | return ((_counter+1) < max_reader); |
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85 | } |
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86 | |
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87 | public : bool can_free (void) |
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88 | { |
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89 | return ((_is_free == 0) and |
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90 | (_is_link == 0) and |
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91 | // (_is_valid == 1) and // if is_link <- 0, then retire_write_old or reset |
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92 | (_counter == 0)); |
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93 | } |
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94 | |
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95 | public : friend std::ostream& operator<< (std::ostream& output, |
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96 | stat_list_entry_t & x) |
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97 | { |
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98 | output << x._is_free << " " |
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99 | << x._is_link << " " |
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100 | << x._is_valid << " " |
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101 | << x._counter; |
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102 | |
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103 | return output; |
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104 | } |
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105 | |
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106 | }; |
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107 | |
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108 | |
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109 | }; // end namespace stat_list_unit |
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110 | }; // end namespace register_translation_unit |
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111 | }; // end namespace rename_unit |
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112 | }; // end namespace ooo_engine |
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113 | }; // end namespace multi_ooo_engine |
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114 | }; // end namespace core |
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115 | |
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116 | }; // end namespace behavioural |
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117 | }; // end namespace morpheo |
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118 | |
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119 | #endif |
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