/*****************************************************************************/
/* */
-/* function.h */
+/* function.h */
/* */
-/* Function management */
+/* Function management */
/* */
/* */
/* */
#ifndef FUNCTION_H
#define FUNCTION_H
-
+#include "coll.h"
/*****************************************************************************/
-/* data */
+/* Data */
/*****************************************************************************/
+/* Enumeration for function flags */
+typedef enum {
+ FF_NONE = 0x0000,
+ FF_HAS_RETURN = 0x0001, /* Function has a return statement */
+ FF_IS_MAIN = 0x0002, /* This is the main function */
+ FF_VOID_RETURN = 0x0004, /* Function returning void */
+} funcflags_t;
+
+/* Structure that holds all data needed for function activation */
+struct Function {
+ struct SymEntry* FuncEntry; /* Symbol table entry */
+ Type* ReturnType; /* Function return type */
+ FuncDesc* Desc; /* Function descriptor */
+ int Reserved; /* Reserved local space */
+ unsigned RetLab; /* Return code label */
+ int TopLevelSP; /* SP at function top level */
+ unsigned RegOffs; /* Register variable space offset */
+ funcflags_t Flags; /* Function flags */
+ Collection LocalsBlockStack; /* Stack of blocks with local vars */
+};
/* Structure that holds all data needed for function activation */
typedef struct Function Function;
/*****************************************************************************/
-/* Code */
+/* Code */
/*****************************************************************************/
int F_ReserveLocalSpace (Function* F, unsigned Size);
/* Reserve (but don't allocate) the given local space and return the stack
- * offset.
- */
+** offset.
+*/
int F_GetStackPtr (const Function* F);
/* Return the current stack pointer including reserved (but not allocated)
- * space on the stack.
- */
+** space on the stack.
+*/
void F_AllocLocalSpace (Function* F);
/* Allocate any local space previously reserved. The function will do
- * nothing if there is no reserved local space.
- */
+** nothing if there is no reserved local space.
+*/
int F_AllocRegVar (Function* F, const Type* Type);
/* Allocate a register variable for the given variable type. If the allocation
- * was successful, return the offset of the register variable in the register
- * bank (zero page storage). If there is no register space left, return -1.
- */
+** was successful, return the offset of the register variable in the register
+** bank (zero page storage). If there is no register space left, return -1.
+*/
void NewFunc (struct SymEntry* Func);
/* Parse argument declarations and function body. */
/* End of function.h */
-#endif
-
-
+#endif