Remember where each symbol was defined and where it was referenced. Write this

[cc65] / src / ca65 / expr.h

diff --git a/src/ca65/expr.h b/src/ca65/expr.h
index de03e19ba5cf18df96d2cce3d1db09105c69616a..694a3b1a63820633023d30859c95994cc515716d 100644 (file)
--- a/src/ca65/expr.h
+++ b/src/ca65/expr.h
@@ -6,10 +6,10 @@
 /*                                                                           */
 /*                                                                           */
 /*                                                                           */
-/* (C) 1998-2003 Ullrich von Bassewitz                                       */
-/*               Römerstraße 52                                              */
-/*               D-70794 Filderstadt                                         */
-/* EMail:        uz@cc65.org                                                 */
+/* (C) 1998-2011, Ullrich von Bassewitz                                      */
+/*                Roemerstrasse 52                                           */
+/*                D-70794 Filderstadt                                        */
+/* EMail:         uz@cc65.org                                                */
 /*                                                                           */
 /*                                                                           */
 /* This software is provided 'as-is', without any expressed or implied       */
@@ -79,6 +79,9 @@ ExprNode* SimplifyExpr (ExprNode* Expr, const struct ExprDesc* D);
 ExprNode* GenLiteralExpr (long Val);
 /* Return an expression tree that encodes the given literal value */
 
+ExprNode* GenLiteral0 (void);
+/* Return an expression tree that encodes the the number zero */
+
 ExprNode* GenSymExpr (struct SymEntry* Sym);
 /* Return an expression node that encodes the given symbol */
 
@@ -126,6 +129,12 @@ int IsWordRange (long Val);
 int IsFarRange (long Val);
 /* Return true if this is a far (24 bit) value */
 
+int IsEasyConst (const ExprNode* E, long* Val);
+/* Do some light checking if the given node is a constant. Don't care if E is
+ * a complex expression. If E is a constant, return true and place its value
+ * into Val, provided that Val is not NULL.
+ */
+
 ExprNode* CloneExpr (ExprNode* Expr);
 /* Clone the given expression tree. The function will simply clone symbol
  * nodes, it will not resolve them.
@@ -134,6 +143,23 @@ ExprNode* CloneExpr (ExprNode* Expr);
 void WriteExpr (ExprNode* Expr);
 /* Write the given expression to the object file */
 
+void ExprGuessedAddrSize (const ExprNode* Expr, unsigned char AddrSize);
+/* Mark the address size of the given expression tree as guessed. The address
+ * size passed as argument is the one NOT used, because the actual address
+ * size wasn't known. Example: Zero page addressing was not used because symbol
+ * is undefined, and absolute addressing was available.
+ * This function will actually parse the expression tree for undefined symbols,
+ * and mark these symbols accordingly.
+ */
+
+ExprNode* FuncBankByte (void);
+/* Handle the .BANKBYTE builtin function */
+
+ExprNode* FuncLoByte (void);
+/* Handle the .LOBYTE builtin function */
+
+ExprNode* FuncHiByte (void);
+/* Handle the .HIBYTE builtin function */
 
 
 /* End of expr.h */