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source: trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_Front_end/Front_end/Prediction_unit/Update_Prediction_Table/include/Types.h @ 105

Last change on this file since 105 was 105, checked in by rosiere, 15 years ago
1) Bug fix : Load Miss Speculation (in Commit_unit, Update Prediction Table and Context State) 2) Change address, in rob write address_next. 3) Move Meta_Predictor in save directory
Property svn:keywords set to `Id`
File size: 9.9 KB

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1	#ifndef morpheo_behavioural_core_multi_front_end_front_end_prediction_unit_update_prediction_table_Types_h
2	#define morpheo_behavioural_core_multi_front_end_front_end_prediction_unit_update_prediction_table_Types_h
3
4	/*
5	* $Id: Types.h 105 2009-02-05 11:18:31Z rosiere $
6	*
7	* [ Description ]
8	*
9	*/
10
11	#include "Behavioural/include/Types.h"
12
13	namespace morpheo {
14	namespace behavioural {
15	namespace core {
16	namespace multi_front_end {
17	namespace front_end {
18	namespace prediction_unit {
19	namespace update_prediction_table {
20
21	typedef enum
22	{
23	EVENT_STATE_OK , // Can predict
24	EVENT_STATE_MISS_FLUSH_UFPT , // in decod stage, detect a miss , continue to execute but flush ufpt
25	EVENT_STATE_MISS_FLUSH_UFPT_AND_UPT , // in commit stage, detect a miss , stop context and flush ufpt and upt
26	EVENT_STATE_MISS_FLUSH_UPT , // in commit stage, detect a miss , context is stop and ufpt is flush, update RAS
27	EVENT_STATE_EVENT_FLUSH_UFPT , // in commit stage, detect an event, continue to execute but flush ufpt
28	EVENT_STATE_EVENT_FLUSH_UFPT_AND_UPT, // in commit stage, detect an event, stop context and flush ufpt and upt
29	EVENT_STATE_EVENT_FLUSH_UPT , // in commit stage, detect an event, context is stop and ufpt is flush, update RAS
30	EVENT_STATE_UPDATE_CONTEXT , // prediction unit is update, send signal to context manager
31	EVENT_STATE_WAIT_END_EVENT // prediction unit is ok, wait the end of event (send by Context State)
32	} event_state_t;
33
34	typedef enum
35	{
36	UPDATE_FETCH_PREDICTION_STATE_EMPTY , // Slot is empty
37	UPDATE_FETCH_PREDICTION_STATE_WAIT_DECOD , // Have make a prediction, wait decod
38	UPDATE_FETCH_PREDICTION_STATE_EVENT , // previous branch is a miss prediction
39	UPDATE_FETCH_PREDICTION_STATE_END // branch is updated
40	} ufpt_state_t;
41
42	typedef enum
43	{
44	UPDATE_PREDICTION_STATE_EMPTY , // Slot is empty
45	UPDATE_PREDICTION_STATE_WAIT_END , // Have make a prediction, wait branch_complete
46	UPDATE_PREDICTION_STATE_OK , // this branch is a hit prediction
47	UPDATE_PREDICTION_STATE_KO , // this branch is a miss prediction
48	UPDATE_PREDICTION_STATE_EVENT , // previous branch is a miss prediction
49	UPDATE_PREDICTION_STATE_END_OK , // branch is updated, update pointer
50	UPDATE_PREDICTION_STATE_END_KO_WAIT_END , // branch is updated, don't update pointer
51	UPDATE_PREDICTION_STATE_END_KO // branch is updated, don't update pointer
52	} upt_state_t;
53
54	class ufpt_entry_t
55	{
56	public : ufpt_state_t _state ;
57	public : Tbranch_condition_t _condition ;
58	public : Taddress_t _address_src ;
59	public : Taddress_t _address_dest ;
60	public : Tcontrol_t _last_take ;
61	//public : Tcontrol_t _good_take ;
62	public : Tcontrol_t _is_accurate ;
63	public : Thistory_t _history ;
64	public : Taddress_t _address_ras ;
65	public : Tptr_t _index_ras ;
66	//public : Tcontrol_t _ifetch_prediction;
67	};
68
69	class upt_entry_t
70	{
71	public : upt_state_t _state ;
72	public : Tbranch_condition_t _condition ;
73	public : Taddress_t _address_src ;
74	public : Taddress_t _address_dest ;
75	public : Tcontrol_t _last_take ;
76	public : Tcontrol_t _good_take ; // not in ufpt
77	public : Tcontrol_t _is_accurate ;
78	public : Thistory_t _history ;
79	public : Taddress_t _address_ras ;
80	public : Tptr_t _index_ras ;
81	public : Tcontrol_t _ifetch_prediction; // not in ufpt
82	};
83
84
85	// BRANCH_CONDITION_NONE_WITHOUT_WRITE_STACK
86	// BRANCH_CONDITION_NONE_WITH_WRITE_STACK
87	// BRANCH_CONDITION_FLAG_UNSET
88	// BRANCH_CONDITION_FLAG_SET
89	// BRANCH_CONDITION_READ_REGISTER_WITHOUT_WRITE_STACK
90	// BRANCH_CONDITION_READ_REGISTER_WITH_WRITE_STACK
91	// BRANCH_CONDITION_READ_STACK
92
93
94	#define update_btb(cond) true
95
96	#define update_dir(cond) ((cond == BRANCH_CONDITION_FLAG_UNSET) or \
97	(cond == BRANCH_CONDITION_FLAG_SET))
98
99	#define update_ras(cond) ((cond == BRANCH_CONDITION_NONE_WITH_WRITE_STACK ) or \
100	(cond == BRANCH_CONDITION_READ_REGISTER_WITH_WRITE_STACK) or \
101	(cond == BRANCH_CONDITION_READ_STACK ))
102
103	#define push_ras(cond) ((cond == BRANCH_CONDITION_NONE_WITH_WRITE_STACK ) or \
104	(cond == BRANCH_CONDITION_READ_REGISTER_WITH_WRITE_STACK))
105
106	#define pop_ras(cond) ((cond == BRANCH_CONDITION_READ_STACK ))
107
108	#define need_update(cond) update_ras(cond)
109
110	}; // end namespace update_prediction_table
111	}; // end namespace prediction_unit
112	}; // end namespace front_end
113	}; // end namespace multi_front_end
114	}; // end namespace core
115	}; // end namespace behavioural
116
117	template<> inline std::string toString<morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::event_state_t>(const morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::event_state_t& x)
118	{
119	switch (x)
120	{
121	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::EVENT_STATE_OK : return "ok" ; break;
122	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::EVENT_STATE_MISS_FLUSH_UFPT : return "miss_flush_ufpt" ; break;
123	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::EVENT_STATE_MISS_FLUSH_UFPT_AND_UPT : return "miss_flush_ufpt_and_upt" ; break;
124	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::EVENT_STATE_MISS_FLUSH_UPT : return "miss_flush_upt" ; break;
125	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::EVENT_STATE_EVENT_FLUSH_UPT : return "event_flush_upt" ; break;
126	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::EVENT_STATE_EVENT_FLUSH_UFPT : return "event_flush_ufpt" ; break;
127	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::EVENT_STATE_EVENT_FLUSH_UFPT_AND_UPT: return "event_flush_ufpt_and_upt"; break;
128	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::EVENT_STATE_UPDATE_CONTEXT : return "update_context" ; break;
129	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::EVENT_STATE_WAIT_END_EVENT : return "wait_and_event" ; break;
130	default : return ""; break;
131	}
132	};
133
134	template<> inline std::string toString<morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::ufpt_state_t>(const morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::ufpt_state_t& x)
135	{
136	switch (x)
137	{
138	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_FETCH_PREDICTION_STATE_EMPTY : return "empty" ; break;
139	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_FETCH_PREDICTION_STATE_WAIT_DECOD : return "wait_decod"; break;
140	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_FETCH_PREDICTION_STATE_EVENT : return "event" ; break;
141	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_FETCH_PREDICTION_STATE_END : return "end" ; break;
142	default : return "" ; break;
143	}
144	};
145
146	template<> inline std::string toString<morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::upt_state_t>(const morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::upt_state_t& x)
147	{
148	switch (x)
149	{
150	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_PREDICTION_STATE_EMPTY : return "empty" ; break;
151	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_PREDICTION_STATE_WAIT_END : return "wait_end" ; break;
152	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_PREDICTION_STATE_OK : return "ok" ; break;
153	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_PREDICTION_STATE_KO : return "ko" ; break;
154	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_PREDICTION_STATE_EVENT : return "event" ; break;
155	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_PREDICTION_STATE_END_OK : return "end_ok" ; break;
156	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_PREDICTION_STATE_END_KO_WAIT_END: return "end_ko_wait_end" ; break;
157	case morpheo::behavioural::core::multi_front_end::front_end::prediction_unit::update_prediction_table::UPDATE_PREDICTION_STATE_END_KO : return "end_ko" ; break;
158	default : return "" ; break;
159	}
160	};
161
162	}; // end namespace morpheo
163
164	#endif

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