1 | /* |
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2 | * $Id: Random.cpp 81 2008-04-15 18:40:01Z rosiere $ |
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3 | * |
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4 | * [ Description ] |
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5 | * |
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6 | */ |
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7 | |
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8 | #include "Behavioural/Custom/include/Random.h" |
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9 | |
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10 | namespace morpheo { |
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11 | namespace behavioural { |
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12 | namespace custom { |
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13 | namespace random { |
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14 | |
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15 | static uint32_t _num_group; |
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16 | |
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17 | Random::Random (uint32_t num_group) |
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18 | { |
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19 | _num_group = num_group; |
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20 | }; |
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21 | |
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22 | uint32_t Random::get_nb_register (void) |
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23 | { |
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24 | return 4; |
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25 | }; |
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26 | |
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27 | access_mode_t Random::get_access_mode (uint32_t reg) |
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28 | { |
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29 | // All reg is access by supervisor |
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30 | if (reg == num_register_random) |
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31 | return access_mode_t (SPR_ACCESS_MODE_READ_ONLY, SPR_ACCESS_MODE_READ_ONLY); |
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32 | |
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33 | return access_mode_t (SPR_ACCESS_MODE_READ_ONLY_COND, SPR_ACCESS_MODE_READ_WRITE); |
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34 | } |
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35 | |
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36 | custom_decod_t * Random::get_custom_decod (Toperation_t operation) |
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37 | { |
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38 | // TODO !!!!! |
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39 | return NULL; |
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40 | } |
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41 | |
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42 | custom_execute_genMoore_t * Random::get_custom_execute_genMoore (Toperation_t operation) |
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43 | { |
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44 | return &(morpheo::behavioural::core::multi_execute_loop::execute_loop::multi_execute_unit::execute_unit::functionnal_unit::operation_unimplemented); // unimplemented function |
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45 | } |
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46 | |
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47 | custom_execute_transition_t * Random::get_custom_execute_transition (void) |
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48 | { |
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49 | // No treatment a the end cycle |
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50 | return &(function_transition); |
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51 | } |
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52 | |
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53 | custom_execute_transition_t * Random::get_custom_execute_reset (void) |
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54 | { |
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55 | // No treatment a the end cycle |
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56 | return &(function_reset); |
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57 | } |
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58 | |
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59 | void Random::function_transition (morpheo::behavioural::core::multi_execute_loop::execute_loop::multi_execute_unit::execute_unit::functionnal_unit::execute_register_t * reg, |
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60 | morpheo::behavioural::core::multi_execute_loop::execute_loop::multi_execute_unit::execute_unit::functionnal_unit::execute_param_t * param) |
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61 | { |
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62 | std::cout << "<Random::function_transition> Transition" << std::endl; |
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63 | |
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64 | uint32_t num_group = reg->_access_num_group; |
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65 | uint32_t num_register = reg->_access_num_register; |
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66 | if (num_group == _num_group) |
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67 | { |
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68 | // Test if have a read of num_register_random |
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69 | if ((reg->_i_read_spr) and |
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70 | (num_register == num_register_random)) |
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71 | { |
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72 | Tgeneral_data_t random = reg->_spr[num_group][num_register_random]; |
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73 | Tgeneral_data_t cst1 = reg->_spr[num_group][num_register_cst1 ]; |
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74 | Tgeneral_data_t cst2 = reg->_spr[num_group][num_register_cst2 ]; |
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75 | Tgeneral_data_t max = reg->_spr[num_group][num_register_max ]; |
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76 | |
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77 | // make a new value |
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78 | reg->_spr[num_group][num_register_random] = (cst1*random+cst2)%max; |
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79 | } |
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80 | |
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81 | // Test if write in register_max |
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82 | if (reg->_i_write_spr and |
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83 | (reg->_spr[num_group][num_register] == 0)) |
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84 | { |
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85 | reg->_spr[num_group][num_register] = reg->_spr_old; |
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86 | } |
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87 | } |
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88 | }; |
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89 | |
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90 | void Random::function_reset (morpheo::behavioural::core::multi_execute_loop::execute_loop::multi_execute_unit::execute_unit::functionnal_unit::execute_register_t * reg, |
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91 | morpheo::behavioural::core::multi_execute_loop::execute_loop::multi_execute_unit::execute_unit::functionnal_unit::execute_param_t * param) |
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92 | { |
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93 | std::cout << "<Random::function_reset> Reset" << std::endl; |
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94 | |
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95 | reg->_spr[_num_group][num_register_random] = 0xbebe; |
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96 | reg->_spr[_num_group][num_register_cst1 ] = 0xdeadbeef; |
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97 | reg->_spr[_num_group][num_register_cst2 ] = 0x666; |
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98 | reg->_spr[_num_group][num_register_max ] = 0xffffffff; |
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99 | }; |
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100 | |
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101 | }; // end namespace random |
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102 | }; // end namespace custom |
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103 | }; // end namespace behavioural |
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104 | }; // end namespace morpheo |
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