Add strings to type system and parser/lexer

[snipe.git] / codegen / codegen.sml

diff --git a/codegen/codegen.sml b/codegen/codegen.sml
index aad17706ccf41f312e0bc2e99bec6d7ff82e36de..de8fa1e7867f5fcc851a1bfb924bb9975ef31c4e 100644 (file)
--- a/codegen/codegen.sml
+++ b/codegen/codegen.sml
@@ -40,7 +40,7 @@ struct
 (*      val _ = print ("s1 = " ^ Tm.sfx s1 ^ ", s2 = " ^ Tm.sfx s2 ^ ", ") *)
 (*      val _ = print ("rs = " ^ Tm.sfx rs ^ " from " ^ TU.Print.pp_exp e1 ^ " and " ^ TU.Print.pp_exp e2 ^ "\n") *)
     in
-      i1 @ i2 @ [X.INSN (X.AL, oper (d, t))]
+      [X.COMMENT "binophit" ] @ i1 @ i2 @ [X.INSN (X.AL, oper (d, t)), X.COMMENT "binophit done"]
     end
   
   (* cmphit : X.oper -> X.exp -> X.insn list
@@ -125,9 +125,9 @@ struct
     (*| munch_exp d (T.BINOP(T.SUB, e1, T.CONST n)) = binophit_c d X.SUB e1 n
     | munch_exp d (T.BINOP(T.SUB, e1, T.TEMP t)) = binophit_t d X.SUB e1 t*)
     | munch_exp d (T.BINOP(T.SUB, e1, e2)) = binophit d X.SUB e1 e2
-    | munch_exp d (T.BINOP(T.MUL, _, _)) = raise ErrorMsg.InternalError "MUL does not exist on blargcpu"
-    | munch_exp d (T.BINOP(T.DIV, _, _)) = raise ErrorMsg.InternalError "DIV does not exist on blargcpu"
-    | munch_exp d (T.BINOP(T.MOD, _, _)) = raise ErrorMsg.InternalError "MOD does not exist on blargcpu"
+    | munch_exp d (T.BINOP(T.MUL, e1, e2)) = munch_exp d (T.CALL (Symbol.symbol "__blarg_mul", [e1, e2]))
+    | munch_exp d (T.BINOP(T.DIV, e1, e2)) = munch_exp d (T.CALL (Symbol.symbol "__blarg_div", [e1, e2]))
+    | munch_exp d (T.BINOP(T.MOD, e1, e2)) = munch_exp d (T.CALL (Symbol.symbol "__blarg_mod", [e1, e2]))
     | munch_exp d (T.BINOP(T.LSH, e1, e2)) = binophit d X.SHL e1 e2
     | munch_exp d (T.BINOP(T.RSH, e1, e2)) = binophit d X.SHR e1 e2
     | munch_exp d (T.BINOP(T.BITAND, e1, e2)) = binophit d X.AND e1 e2
@@ -231,8 +231,8 @@ struct
 
   and condhit e1 e2 (pos, neg) =
     let
-      val t1 = X.TEMP (Temp.new ("var neq 1"))
-      val t2 = X.TEMP (Temp.new ("var neq 2"))
+      val t1 = X.TEMP (Temp.new ("var cond 1"))
+      val t2 = X.TEMP (Temp.new ("var cond 2"))
       val i1 = munch_exp t1 e1
       val i2 = munch_exp t2 e2
     in
@@ -250,11 +250,11 @@ struct
           (insns, neg, pos)
         end
     | munch_cond (T.BINOP(T.NEQ, e1, e2)) = condhit e1 e2 (X.NE, X.EQ)
-    | munch_cond (T.BINOP(T.EQ, e1, e2)) = condhit e1 e2 (X.EQ, X.NE)
-    | munch_cond (T.BINOP(T.LE, e1, e2)) = condhit e1 e2 (X.LE, X.GT)
-    | munch_cond (T.BINOP(T.LT, e1, e2)) = condhit e1 e2 (X.LT, X.GE)
-    | munch_cond (T.BINOP(T.GT, e1, e2)) = condhit e1 e2 (X.GT, X.LE)
-    | munch_cond (T.BINOP(T.GE, e1, e2)) = condhit e1 e2 (X.GE, X.LT)
+    | munch_cond (T.BINOP(T.EQ, e1, e2)) =  condhit e1 e2 (X.EQ, X.NE)
+    | munch_cond (T.BINOP(T.LE, e1, e2)) =  condhit e1 e2 (X.LE, X.GT)
+    | munch_cond (T.BINOP(T.LT, e1, e2)) =  condhit e1 e2 (X.LT, X.GE)
+    | munch_cond (T.BINOP(T.GT, e1, e2)) =  condhit e1 e2 (X.GT, X.LE)
+    | munch_cond (T.BINOP(T.GE, e1, e2)) =  condhit e1 e2 (X.GE, X.LT)
 
     | munch_cond (T.BINOP(T.BE, e1, e2)) = raise ErrorMsg.InternalError "memory safety not supported"
 
@@ -269,7 +269,7 @@ struct
   (* munch_lval : T.exp -> X.operand
    * Takes an expression that has been typechecked as being a valid lvalue and a location of a datum, and then returns an instruction list to store.
    *)
-  and munch_lval (T.TEMP t) oper = [X.INSN (X.AL, X.MOV (oper, X.TEMP t))]
+  and munch_lval (T.TEMP t) oper = [X.INSN (X.AL, X.MOV (X.TEMP t, oper))]
     | munch_lval (T.MEMORY m) oper = 
       let
         val t = X.TEMP (Tm.new "lv addr")