是否有x86操作码可用于将立即字节移动到直接存储位置(不使用寄存器)? [英] Is there an x86 opcode for moving an immediate byte to a direct memory location (without using registers)?

问题描述

是否有一种方法可以将特定的立即字节大小数字移动"到直接存储位置?即

Is there a way to 'mov'e a specific immediate byte-size number into a direct memory location? I.e.

MOV 10h,ffffh

将值16写入存储器地址65535?如果是这样，那是哪个操作码，还是我必须先将内存地址存储到寄存器中?

to write the value 16 into the memory address 65535? If so, which opcode is that, orwould I have to store a memory address into a register first?

推荐答案

是.操作码为C6.您应该免费下载英特尔ISA文档的副本，该文档可用.

Yes. The opcode is C6. You should download a copy of the Intel ISA documents, which are freely available.

关于您的后续问题:示例的完整编码为:

To your follow-up question: the full encoding of your example is:

  c6      04      25   ff ff 00 00   10
opcode  modr/m   sib     address     immediate

这篇关于是否有x86操作码可用于将立即字节移动到直接存储位置(不使用寄存器)?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！