ruby: automate permission setting

This patch integrates permissions with cache and memory states, and then
automates the setting of permissions within the generated code.  No longer
does one need to manually set the permissions within the setState funciton.
This patch will faciliate easier functional access support by always correctly
setting permissions for both cache and memory states.

--HG--
rename : src/mem/slicc/ast/EnumDeclAST.py => src/mem/slicc/ast/StateDeclAST.py
rename : src/mem/slicc/ast/TypeFieldEnumAST.py => src/mem/slicc/ast/TypeFieldStateAST.py

1 files changed, 13 insertions, 0 deletions

diff --git a/src/mem/slicc/symbols/StateMachine.py b/src/mem/slicc/symbols/StateMachine.py
index 1251196c9..3c5f860ea 100644
--- a/src/mem/slicc/symbols/StateMachine.py
+++ b/src/mem/slicc/symbols/StateMachine.py
@@ -347,6 +347,8 @@ static int m_num_controllers;
 // Set and Reset for cache_entry variable
 void set_cache_entry(${{self.EntryType.c_ident}}*& m_cache_entry_ptr, AbstractCacheEntry* m_new_cache_entry);
 void unset_cache_entry(${{self.EntryType.c_ident}}*& m_cache_entry_ptr);
+// Set permissions for the cache_entry
+void set_permission(${{self.EntryType.c_ident}}*& m_cache_entry_ptr, AccessPermission perm);
 ''')
 
         if self.TBEType != None:
@@ -850,6 +852,15 @@ $c_ident::unset_cache_entry(${{self.EntryType.c_ident}}*& m_cache_entry_ptr)
 {
   m_cache_entry_ptr = 0;
 }
+
+void
+$c_ident::set_permission(${{self.EntryType.c_ident}}*& m_cache_entry_ptr,
+                         AccessPermission perm)
+{
+    if (m_cache_entry_ptr != NULL) {
+       m_cache_entry_ptr->changePermission(perm);
+    }
+}
 ''')
 
         if self.TBEType != None:
@@ -1090,10 +1101,12 @@ ${ident}_Controller::doTransition(${ident}_Event event,
 ''')
         if self.TBEType != None and self.EntryType != None:
             code('${ident}_setState(m_tbe_ptr, m_cache_entry_ptr, addr, next_state);')
+            code('set_permission(m_cache_entry_ptr, ${ident}_State_to_permission(next_state));')
         elif self.TBEType != None:
             code('${ident}_setState(m_tbe_ptr, addr, next_state);')
         elif self.EntryType != None:
             code('${ident}_setState(m_cache_entry_ptr, addr, next_state);')
+            code('set_permission(m_cache_entry_ptr, ${ident}_State_to_permission(next_state));')
         else:
             code('${ident}_setState(addr, next_state);')