-int ia32_cmp_reg_projnum_assoc(const void *a, const void *b, size_t len);
-void ia32_set_reg_projnum(const arch_register_t *reg, long proj_num, set *reg_set);
-long ia32_get_reg_projnum(const arch_register_t *reg, set *reg_set);
+/**
+ * Enters for each general purpose register the corresponding 16bit
+ * name into a pmap.
+ */
+void ia32_build_16bit_reg_map(pmap *reg_map);
+
+/**
+ * Enters for each general purpose register the corresponding 8bit
+ * name into a pmap.
+ */
+void ia32_build_8bit_reg_map(pmap *reg_map);
+
+/**
+ * Returns the corresponding mapped name for a register.
+ */
+const char *ia32_get_mapped_reg_name(pmap *reg_map, const arch_register_t *reg);
+
+/**
+ * Check all parameters and determine the maximum number of parameters
+ * to pass in gp regs resp. in fp regs.
+ *
+ * @param n The number of parameters
+ * @param modes The list of the parameter modes
+ * @param n_int Holds the number of int parameters to be passed in regs after the call
+ * @param n_float Holds the number of float parameters to be passed in regs after the call
+ * @return The number of the last parameter to be passed in register
+ */
+int ia32_get_n_regparam_class(int n, ir_mode **modes, int *n_int, int *n_float);
+
+/**
+ * Returns the register for parameter nr.
+ *
+ * @param n The number of parameters
+ * @param modes The list of the parameter modes
+ * @param nr The number of the parameter to return the requirements for
+ * @param cc The calling convention
+ * @return The register
+ */
+const arch_register_t *ia32_get_RegParam_reg(int n, ir_mode **modes, long nr, unsigned cc);