extern void x1f4_hook_expression (void *x1f4_expression, unsigned *mask);
x1f4_hook_expression function describes the arguments evaluation
status for the
x1f4_expression function being evaluated.
See Late Function Arguments Evaluation.
After function call, the
unsigned record pointed to by
have the bits corresponding the already evaluated arguments set, the rest of
the bits unset. The least significant bit refers the last function argument,
the second least significant bit refers the second last function argument and
The function should only be called from the routine performing the symbolic function logic.
See struct x1f4_function_type.