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source: trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Direction/Meta_Predictor/Two_Level_Branch_Predictor/src/Parameters.cpp @ 124

Last change on this file since 124 was 124, checked in by rosiere, 15 years ago
1) Add test and configuration 2) Fix Bug 3) Add log file in load store unit 4) Fix Bug in environment
Property svn:keywords set to `Id`
File size: 7.2 KB

Line
1	/*
2	* $Id: Parameters.cpp 124 2009-06-17 12:11:25Z rosiere $
3	*
4	* [ Description ]
5	*
6	*/
7
8	#include "Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Direction/Meta_Predictor/Two_Level_Branch_Predictor/include/Parameters.h"
9	#include "Common/include/BitManipulation.h"
10
11	namespace morpheo {
12	namespace behavioural {
13	namespace core {
14	namespace multi_front_end {
15	namespace front_end {
16	namespace prediction_unit {
17	namespace direction {
18	namespace meta_predictor {
19	namespace two_level_branch_predictor {
20
21
22	#undef FUNCTION
23	#define FUNCTION "Two_Level_Branch_Predictor::Parameters"
24	Parameters::Parameters (uint32_t nb_inst_predict ,
25	uint32_t nb_inst_update ,
26	uint32_t size_address ,
27	bool have_bht ,
28	uint32_t bht_size_shifter ,
29	uint32_t bht_nb_shifter ,
30	bool have_pht ,
31	uint32_t pht_size_counter ,
32	uint32_t pht_nb_counter ,
33	uint32_t pht_size_address_share,
34	bool update_on_prediction ,
35	bool is_toplevel)
36	{
37	log_begin(Two_Level_Branch_Predictor,FUNCTION);
38
39	_nb_inst_predict = nb_inst_predict ;
40	_nb_inst_update = nb_inst_update ;
41	_size_address = size_address ;
42	_have_bht = have_bht ;
43	_bht_size_shifter = (have_bht)?(bht_size_shifter):0;
44	_bht_nb_shifter = (have_bht)?(bht_nb_shifter ):0;
45	_have_pht = have_pht ;
46	_pht_size_counter = (have_pht)?(pht_size_counter):0;
47	_pht_nb_counter = (have_pht)?(pht_nb_counter ):0;
48	_pht_size_address_share = (have_bht and have_pht)?(pht_size_address_share):0;
49	_update_on_prediction = update_on_prediction ;
50
51	_bht_size_address = (_have_bht)?log2(_bht_nb_shifter):0;
52	_pht_size_address = (_have_pht)?log2(_pht_nb_counter):0;
53
54	test();
55
56	// history to update_prediction_table :
57	// MSB : pht_history
58	// LSB : bht_history
59	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _have_bht : %d",_have_bht );
60	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _bht_size_shifter : %d",_bht_size_shifter);
61	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _bht_nb_shifter : %d",_bht_nb_shifter );
62
63	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _have_pht : %d",_have_pht );
64	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_size_counter : %d",_pht_size_counter);
65	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_nb_counter : %d",_pht_nb_counter );
66
67	_size_history = _bht_size_shifter + _pht_size_counter;
68	_bht_history_mask = gen_mask<Thistory_t>(_bht_size_shifter);
69	_bht_history_shift = 0;
70	_pht_history_mask = gen_mask<Thistory_t>(_pht_size_counter);
71	_pht_history_shift = _bht_size_shifter;
72
73	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _size_history : %d",_size_history );
74	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _bht_history_mask : 0x%llx",_bht_history_mask );
75	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _bht_history_shift : %lld",_bht_history_shift );
76	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_history_mask : 0x%llx",_pht_history_mask );
77	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_history_shift : %lld",_pht_history_shift );
78
79	_bht_init_take = static_cast<Thistory_t>(-1)&_bht_history_mask;
80	_bht_init_ntake = 0;
81	_pht_init_take = (1<<(_pht_size_counter-1)); // size = 4 : 1000/2
82	_pht_init_ntake = _pht_init_take-1; // size = 4 : 0111/2
83
84	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _bht_init_take : 0x%llx",_bht_init_take );
85	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _bht_init_ntake : 0x%llx",_bht_init_ntake);
86	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_init_take : 0x%llx",_pht_init_take );
87	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_init_ntake : 0x%llx",_pht_init_ntake);
88
89	if (_have_bht)
90	{
91	_bht_address_mask = gen_mask<Taddress_t>(_bht_size_address);
92
93	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _bht_address_mask : 0x%x",_bht_address_mask );
94	}
95
96	if (_have_pht)
97	{
98	_pht_counter_max = (1<<_pht_size_counter)-1;
99
100	_pht_size_bank = (_have_bht)?(1<<_bht_size_shifter):1;
101	_pht_nb_bank = _pht_nb_counter / _pht_size_bank;
102
103	// -------->\|
104	// +---+ \|
105	// \| \| \|--->
106	// ---> --->\|
107	// \| \| \|
108	// +---+
109	//
110
111	_pht_address_share_mask = gen_mask<Taddress_t>(_pht_size_address_share);
112	_pht_address_share_shift = _bht_size_shifter-_pht_size_address_share;
113	_pht_address_bank_mask = gen_mask<Taddress_t>(log2(_pht_nb_bank));
114	_pht_address_bank_shift = _pht_size_address_share;
115
116	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_nb_bank : %d" ,_pht_nb_bank );
117	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_size_bank : %d" ,_pht_size_bank );
118	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_address_share_mask : 0x%x",_pht_address_share_mask );
119	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_address_share_shift : %d" ,_pht_address_share_shift );
120	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_address_bank_mask : 0x%x",_pht_address_bank_mask );
121	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_address_bank_shift : %d" ,_pht_address_bank_shift );
122	}
123
124	if (is_toplevel)
125	copy();
126
127	log_end(Two_Level_Branch_Predictor,FUNCTION);
128	};
129
130	// #undef FUNCTION
131	// #define FUNCTION "Two_Level_Branch_Predictor::Parameters (copy)"
132	// Parameters::Parameters (Parameters & param)
133	// {
134	// log_begin(Two_Level_Branch_Predictor,FUNCTION);
135	// test();
136	// log_end(Two_Level_Branch_Predictor,FUNCTION);
137	// };
138
139	#undef FUNCTION
140	#define FUNCTION "Two_Level_Branch_Predictor::~Parameters"
141	Parameters::~Parameters (void)
142	{
143	log_begin(Two_Level_Branch_Predictor,FUNCTION);
144	log_end(Two_Level_Branch_Predictor,FUNCTION);
145	};
146
147	#undef FUNCTION
148	#define FUNCTION "Two_Level_Branch_Predictor::copy"
149	void Parameters::copy (void)
150	{
151	log_begin(Two_Level_Branch_Predictor,FUNCTION);
152	log_end(Two_Level_Branch_Predictor,FUNCTION);
153	};
154
155	}; // end namespace two_level_branch_predictor
156	}; // end namespace meta_predictor
157	}; // end namespace direction
158	}; // end namespace prediction_unit
159	}; // end namespace front_end
160	}; // end namespace multi_front_end
161	}; // end namespace core
162
163	}; // end namespace behavioural
164	}; // end namespace morpheo

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