turn, the ESP and SS registers are loaded from the stack.</p>
<p>If parameters are passed to the called procedure during an inter-privilege level call, the optional source operand must be used with the RET instruction to release the parameters on the return. Here, the parameters are released both from the called procedure’s stack and the calling procedure’s stack (that is, the stack being returned to).</p>
<p>In 64-bit mode, the default operation size of this instruction is the stack-address size, i.e. 