Add placeholders for a couple of instructions

wallento · May 28, 2020 · b48786d · b48786d
1 parent a1765ce
commit b48786d
Showing 1 changed file with 11 additions and 7 deletions.
diff --git a/riscvmodel/isa.py b/riscvmodel/isa.py
@@ -267,23 +267,27 @@ class InstructionFENCEI(Instruction):
 
 
 @isa("ecall", 0x73, 0)
-class InstructionECALL(Instruction):
-    pass
+class InstructionECALL(InstructionIType):
+    def execute(self, model: State):
+        pass
 
 
 @isa("ebreak", 0x73, 0)
 class InstructionEBREAK(Instruction):
-    pass
+    def execute(self, model: State):
+        pass
 
 
 @isa("csrrw", 0x73, 1)
-class InstructionCSRRW(Instruction):
-    pass
+class InstructionCSRRW(InstructionIType):
+    def execute(self, model: State):
+        pass
 
 
 @isa("csrrs", 0x73, 2)
-class InstructionCSRRS(Instruction):
-    pass
+class InstructionCSRRS(InstructionIType):
+    def execute(self, model: State):
+        pass
 
 
 @isa("csrrc", 0x73, 3)