source: trunk/IPs/systemC/processor/Morpheo/Behavioural/Core/Multi_OOO_Engine/OOO_Engine/Rename_unit/Register_translation_unit/Register_Address_Translation_unit/src/Register_Address_Translation_unit_transition.cpp @ 104

Last change on this file since 104 was 104, checked in by rosiere, 15 years ago

Fix Bug :
1) Load Store Unit : check big endian
2) Commit unit & RAT : add retire_event interface
  • Property svn:keywords set to Id
File size: 7.8 KB
Line 
1#ifdef SYSTEMC
2/*
3 * $Id: Register_Address_Translation_unit_transition.cpp 104 2009-01-21 21:53:13Z rosiere $
4 *
5 * [ Description ]
6 *
7 */
8
9#include "Behavioural/Core/Multi_OOO_Engine/OOO_Engine/Rename_unit/Register_translation_unit/Register_Address_Translation_unit/include/Register_Address_Translation_unit.h"
10
11namespace morpheo                    {
12namespace behavioural {
13namespace core {
14namespace multi_ooo_engine {
15namespace ooo_engine {
16namespace rename_unit {
17namespace register_translation_unit {
18namespace register_address_translation_unit {
19
20
21#undef  FUNCTION
22#define FUNCTION "Register_Address_Translation_unit::transition"
23  void Register_Address_Translation_unit::transition (void)
24  {
25    log_begin(Register_Address_Translation_unit,FUNCTION);
26    log_function(Register_Address_Translation_unit,FUNCTION,_name.c_str());
27
28    if (PORT_READ(in_NRESET) == 0)
29      {
30        uint32_t gpr = 1;
31        uint32_t spr = 0;
32
33        for (uint32_t i=0; i<_param->_nb_front_end; i++)
34          for (uint32_t j=0; j<_param->_nb_context[i]; j++)
35            {
36              rat_gpr [i][j][0] = 0;
37
38              for (uint32_t k=1; k<_param->_nb_general_register_logic; k++)
39                {
40                  rat_gpr             [i][j][k] = gpr++;
41//                rat_gpr_update_table[i][j][k] = 0;
42                }
43              for (uint32_t k=0; k<_param->_nb_special_register_logic; k++)
44                {
45                  rat_spr             [i][j][k] = spr++;
46//                rat_spr_update_table[i][j][k] = 0;
47                }
48            }
49      }
50    else
51      {
52        // Note : GPR[0] is never write (in decod's stage : write_rd = 0 when num_reg_rd_log == 0)
53
54        // =====================================================
55        // ====[ INSERT ]=======================================
56        // =====================================================
57        // First : interface insert
58        for (uint32_t i=0; i<_param->_nb_inst_insert; i++)
59          // Test transaction
60          if (PORT_READ(in_INSERT_VAL [i]) and internal_INSERT_ACK  [i])
61            {
62              log_printf(TRACE,Register_Address_Translation_unit,FUNCTION,"  * INSERT [%d]",i);
63
64              Tcontext_t front_end_id = (_param->_have_port_front_end_id)?PORT_READ(in_RENAME_FRONT_END_ID [i]):0;
65              Tcontext_t context_id   = (_param->_have_port_context_id  )?PORT_READ(in_RENAME_CONTEXT_ID   [i]):0;
66             
67              // Test if write
68              if (PORT_READ(in_INSERT_WRITE_RD [i]) == 1)
69                rat_gpr[front_end_id][context_id][PORT_READ(in_INSERT_NUM_REG_RD_LOG [i])] = PORT_READ(in_INSERT_NUM_REG_RD_PHY [i]);
70              if (PORT_READ(in_INSERT_WRITE_RE [i]) == 1)
71                rat_spr[front_end_id][context_id][PORT_READ(in_INSERT_NUM_REG_RE_LOG [i])] = PORT_READ(in_INSERT_NUM_REG_RE_PHY [i]);
72            }
73
74        // =====================================================
75        // ====[ RETIRE_EVENT ]=================================
76        // =====================================================
77        for (uint32_t i=0; i<_param->_nb_front_end; ++i)
78          for (uint32_t j=0; j<_param->_nb_context[i]; ++j)
79            if (PORT_READ(in_RETIRE_EVENT_VAL [i][j]) and internal_RETIRE_EVENT_ACK [i][j])
80              // Test if event have just occure
81              if (PORT_READ(in_RETIRE_EVENT_STATE [i][j]) == EVENT_STATE_EVENT)
82                {
83                  log_printf(TRACE,Register_Address_Translation_unit,FUNCTION,"    * Reset Update Table");
84                 
85                  // Reset update_table
86                  for (uint32_t k=0; k<_param->_nb_general_register_logic; k++)
87                    rat_gpr_update_table [i][j][k] = 0;
88                  for (uint32_t k=0; k<_param->_nb_special_register_logic; k++)
89                    rat_spr_update_table [i][j][k] = 0;
90                }
91
92        // =====================================================
93        // ====[ RETIRE ]=======================================
94        // =====================================================
95        // Second : interface retire
96        //  (because if an event on the same thread : the instruction is already renamed)
97        for (uint32_t i=0; i<_param->_nb_inst_retire; i++)
98          if (PORT_READ(in_RETIRE_VAL [i]) and internal_RETIRE_ACK [i])
99            {
100              log_printf(TRACE,Register_Address_Translation_unit,FUNCTION,"  * RETIRE [%d]",i);
101
102              // if no event : no effect, because the RAT content the most recently register
103              // but if they have a event (exception or miss speculation), the rat must restore the oldest value
104              // To restore the oldest valid value, we use the rat_update_table. if the bit is unset, also they have none update on this register
105              // the retire interface became of the Re Order Buffer, also is in program sequence !
106
107              Tcontext_t         front_end_id = (_param->_have_port_front_end_id)?PORT_READ(in_RETIRE_FRONT_END_ID [i]):0;
108              Tcontext_t         context_id   = (_param->_have_port_context_id  )?PORT_READ(in_RETIRE_CONTEXT_ID   [i]):0;
109              Tevent_state_t     event_state  = PORT_READ(in_RETIRE_EVENT_STATE [front_end_id][context_id]);
110
111              if (event_state != EVENT_STATE_NO_EVENT)
112                {
113                  log_printf(TRACE,Register_Address_Translation_unit,FUNCTION,"    * front_end_id : %d",front_end_id);
114                  log_printf(TRACE,Register_Address_Translation_unit,FUNCTION,"    * context_id   : %d",context_id);
115                  log_printf(TRACE,Register_Address_Translation_unit,FUNCTION,"    * event_state  : %d",event_state);
116
117                  // Test if write and have not a previous update
118                  if (PORT_READ(in_RETIRE_WRITE_RD [i]) == 1)
119                    {
120                      Tgeneral_address_t rd_log = PORT_READ(in_RETIRE_NUM_REG_RD_LOG [i]);
121                     
122                      log_printf(TRACE,Register_Address_Translation_unit,FUNCTION,"    * retire RD");
123                      log_printf(TRACE,Register_Address_Translation_unit,FUNCTION,"      * rd_log       : %d",rd_log);
124                     
125//                    if (RETIRE_RESTORE_RD_PHY_OLD [i])
126                      if (rat_gpr_update_table [front_end_id][context_id][rd_log] == 0)
127                        {                     
128                          rat_gpr              [front_end_id][context_id][rd_log] = PORT_READ(in_RETIRE_NUM_REG_RD_PHY_OLD [i]);
129                          rat_gpr_update_table [front_end_id][context_id][rd_log] = 1;
130                        }
131                    }
132
133                  if (PORT_READ(in_RETIRE_WRITE_RE [i]) == 1)
134                    {
135                      Tspecial_address_t re_log = PORT_READ(in_RETIRE_NUM_REG_RE_LOG [i]);
136
137                      log_printf(TRACE,Register_Address_Translation_unit,FUNCTION,"    * retire RE");
138                      log_printf(TRACE,Register_Address_Translation_unit,FUNCTION,"      * re_log       : %d",re_log);
139
140//                    if (RETIRE_RESTORE_RE_PHY_OLD [i])
141                      if (rat_spr_update_table [front_end_id][context_id][re_log] == 0)
142                        {                     
143                          rat_spr              [front_end_id][context_id][re_log] = PORT_READ(in_RETIRE_NUM_REG_RE_PHY_OLD [i]);
144                          rat_spr_update_table [front_end_id][context_id][re_log] = 1;
145                        }
146                    }
147                }
148            }
149      }
150
151#if (DEBUG >= DEBUG_TRACE) and (DEBUG_Register_Address_Translation_unit == true)
152    log_printf(TRACE,Register_Address_Translation_unit,FUNCTION,"  * Dump RAT (Register_Address_Translation_unit)");
153    for (uint32_t i=0; i<_param->_nb_front_end; ++i)
154      for (uint32_t j=0; j<_param->_nb_context[i]; ++j)
155        {
156          log_printf(TRACE,Register_Address_Translation_unit,FUNCTION,"    * front_end[%d].context[%d]",i,j);
157
158          for (uint32_t k=0; k<_param->_nb_general_register_logic; ++k)
159            log_printf(TRACE,Register_Address_Translation_unit,FUNCTION,"      * GPR[%.4d] - %.5d %.1d",k,rat_gpr[i][j][k],rat_gpr_update_table[i][j][k]);
160
161          for (uint32_t k=0; k<_param->_nb_special_register_logic; ++k)
162            log_printf(TRACE,Register_Address_Translation_unit,FUNCTION,"      * SPR[%.4d] - %.5d %.1d",k,rat_spr[i][j][k],rat_spr_update_table[i][j][k]);
163        }
164#endif
165
166#if defined(STATISTICS) or defined(VHDL_TESTBENCH)
167    end_cycle ();
168#endif
169
170    log_end(Register_Address_Translation_unit,FUNCTION);
171  };
172
173}; // end namespace register_address_translation_unit
174}; // end namespace register_translation_unit
175}; // end namespace rename_unit
176}; // end namespace ooo_engine
177}; // end namespace multi_ooo_engine
178}; // end namespace core
179
180}; // end namespace behavioural
181}; // end namespace morpheo             
182#endif
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