+static AMD64_XMM_Reg_No float_param_regs [] = { AMD64_XMM0, AMD64_XMM1, AMD64_XMM2, AMD64_XMM3 };
+
+static AMD64_Reg_No return_regs [] = { AMD64_RAX };
+
+static AMD64_XMM_Reg_No float_return_regs [] = { AMD64_XMM0 };
+
+#define PARAM_REGS G_N_ELEMENTS(param_regs)
+#define FLOAT_PARAM_REGS G_N_ELEMENTS(float_param_regs)
+#define RETURN_REGS G_N_ELEMENTS(return_regs)
+#define FLOAT_RETURN_REGS G_N_ELEMENTS(float_return_regs)
+