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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 @ 115

Last change on this file since 115 was 115, checked in by rosiere, 15 years ago
1) Write queue with mealy 2) Network : fix bug 3) leak memory
Property svn:keywords set to `Id`
File size: 7.2 KB

Rev	Line
[110]	1	/*
	2	* $Id: Parameters.cpp 115 2009-04-20 21:29:17Z 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"
[111]	9	#include "Common/include/BitManipulation.h"
[110]	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"
[111]	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)
[110]	36	{
	37	log_begin(Two_Level_Branch_Predictor,FUNCTION);
	38
[111]	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 ;
[112]	46	_pht_size_counter = (have_pht)?(pht_size_counter):0;
	47	_pht_nb_counter = (have_pht)?(pht_nb_counter ):0;
[111]	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();
[110]	55
[112]	56	// history to update_prediction_table :
	57	// MSB : pht_history
	58	// LSB : bht_history
[115]	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 );
[112]	66
[111]	67	_size_history = _bht_size_shifter + _pht_size_counter;
	68	_bht_history_mask = gen_mask<Thistory_t>(_bht_size_shifter);
[115]	69	_bht_history_shift = 0;
[111]	70	_pht_history_mask = gen_mask<Thistory_t>(_pht_size_counter);
[115]	71	_pht_history_shift = _bht_size_shifter;
[111]	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%x",_bht_history_mask );
[115]	75	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _bht_history_shift : %d",_bht_history_shift );
[111]	76	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_history_mask : 0x%x",_pht_history_mask );
[115]	77	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_history_shift : %d",_pht_history_shift );
[111]	78
[115]	79	_bht_init_take = static_cast<Thistory_t>(-1)&_bht_history_mask;
[112]	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%x",_bht_init_take );
	85	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _bht_init_ntake : 0x%x",_bht_init_ntake);
	86	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_init_take : 0x%x",_pht_init_take );
	87	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_init_ntake : 0x%x",_pht_init_ntake);
	88
[111]	89	if (_have_bht)
[110]	90	{
[111]	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 );
[110]	94	}
	95
[111]	96	if (_have_pht)
	97	{
	98	_pht_counter_max = (1<<_pht_size_counter)-1;
	99
[115]	100	_pht_size_bank = (_have_bht)?(1<<_bht_size_shifter):1;
	101	_pht_nb_bank = _pht_nb_counter / _pht_size_bank;
[111]	102
[115]	103	// -------->\|
	104	// +---+ \|
	105	// \| \| \|--->
	106	// ---> --->\|
	107	// \| \| \|
	108	// +---+
	109	//
	110
[111]	111	_pht_address_share_mask = gen_mask<Taddress_t>(_pht_size_address_share);
[115]	112	_pht_address_share_shift = _bht_size_shifter-_pht_size_address_share;
[111]	113	_pht_address_bank_mask = gen_mask<Taddress_t>(log2(_pht_nb_bank));
[115]	114	_pht_address_bank_shift = _pht_size_address_share;
[111]	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 );
[115]	119	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_address_share_shift : %d" ,_pht_address_share_shift );
[111]	120	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_address_bank_mask : 0x%x",_pht_address_bank_mask );
[115]	121	log_printf(TRACE,Two_Level_Branch_Predictor,FUNCTION," * _pht_address_bank_shift : %d" ,_pht_address_bank_shift );
[111]	122	}
	123
	124	if (is_toplevel)
	125	copy();
	126
[110]	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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