[gem5-dev] Change in gem5/gem5[develop]: mem-ruby: expose transition info to actions

[Gerrit]

Tiago Mück has uploaded this change for review. (  
https://gem5-review.googlesource.com/c/public/gem5/+/31420 )

Change subject: mem-ruby: expose transition info to actions
......................................................................

mem-ruby: expose transition info to actions

SLICC compiler generates the curTransitionEvent and
curTransitionNextState functions, which allows actions to check which
event triggered the current transition and what's the next state.

Change-Id: I79c8c4f2839633b7fb3b23cbbdbb32f25db90eab
Signed-off-by: Tiago Mück <tiago.m...@arm.com>
---
M src/mem/slicc/symbols/StateMachine.py
1 file changed, 12 insertions(+), 2 deletions(-)



diff --git a/src/mem/slicc/symbols/StateMachine.py  
b/src/mem/slicc/symbols/StateMachine.py
index 1f28069..90c74d2 100644
--- a/src/mem/slicc/symbols/StateMachine.py
+++ b/src/mem/slicc/symbols/StateMachine.py
@@ -380,6 +380,12 @@
         code('''
                                     Addr addr);

+${ident}_Event m_curTransitionEvent;
+${ident}_State m_curTransitionNextState;
+
+${ident}_Event curTransitionEvent() { return m_curTransitionEvent; }
+${ident}_State curTransitionNextState() { return m_curTransitionNextState;  
}
+
 int m_counters[${ident}_State_NUM][${ident}_Event_NUM];
 int m_event_counters[${ident}_Event_NUM];
 bool m_possible[${ident}_State_NUM][${ident}_Event_NUM];
@@ -1428,6 +1434,8 @@
         code('''
                                         Addr addr)
 {
+    m_curTransitionEvent = event;
+    m_curTransitionNextState = next_state;
     switch(HASH_FUN(state, event)) {
 ''')

@@ -1448,10 +1456,12 @@
                     # is determined before any actions of the transition
                     # execute, and therefore the next state calculation  
cannot
                     # depend on any of the transitionactions.
-                    case('next_state = getNextState(addr);')
+                    case('next_state = getNextState(addr); '
+                         'm_curTransitionNextState = next_state;')
                 else:
                     ns_ident = trans.nextState.ident
-                    case('next_state = ${ident}_State_${ns_ident};')
+                    case('next_state = ${ident}_State_${ns_ident}; '
+                         'm_curTransitionNextState = next_state;')

             actions = trans.actions
             request_types = trans.request_types

--
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Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: I79c8c4f2839633b7fb3b23cbbdbb32f25db90eab
Gerrit-Change-Number: 31420
Gerrit-PatchSet: 1
Gerrit-Owner: Tiago Mück <tiago.m...@arm.com>
Gerrit-MessageType: newchange
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