The instruction following the call instruction must be a ret 跟在調(diào)用指令后面的指令必須是ret 。
It indicates that the current method s stack frame should be removed before the call instruction is executed 它指示在執(zhí)行調(diào)用指令前應(yīng)移除當(dāng)前方法的堆棧幀。
Performs a postfixed method call instruction such that the current method s stack frame is removed before the actual call instruction is executed 執(zhí)行后綴的方法調(diào)用指令,以便在執(zhí)行實際調(diào)用指令前移除當(dāng)前方法的堆棧幀。
When an emulator supporting user - mode emulation encounters a system call instruction , on the other hand , it does not transfer control to the emulated exception handler ; instead it interprets the system call itself 另一方面,當(dāng)一個支持用戶模式仿真的仿真器碰到一個系統(tǒng)調(diào)用指令時,它并不是把控制轉(zhuǎn)交給仿真的異常處理程序,相反,它會自己解釋該系統(tǒng)調(diào)用。
System calls . when an emulator ordinarily encounters a powerpc system call instruction , it emulates the exception by storing the instruction address into the srr0 register , setting some architecture - defined bits in srr1 , and transferring control to physical address 0xc00 . some powerpc variants allow more control over this behavior , but this is the traditional powerpc model 當(dāng)仿真器正常地碰到一個powerpc系統(tǒng)調(diào)用指令時,它便將指令地址存入到srr0寄存器,設(shè)置srr1中某些體系結(jié)構(gòu)定義的位,并將控制權(quán)轉(zhuǎn)交給物理地址0xc00 ,從而仿真這個異常(有些powerpc的變種允許對這種行為有更多的控制,但是這里的這種是傳統(tǒng)的powerpc模型) 。