ELF标头魔术-为什么要放入0x7F? [英] ELF Header Magic - Why was 0x7F put in it?

问题描述

我所阅读的有关ELF标头魔术的所有资源都指出它包含ASCII编码的"ELF"，然后简要地提到0x7F被附加在它前面，没有任何解释.

Every resource I have read concerning the ELF header magic points out that it contains ASCII encoded "ELF", and then briefly mentions that 0x7F is prepended to it without explanation.

有没有理由使用0x7F?

Is there a reason for the 0x7F?

这是否是为了避免与现有格式冲突?现有标准合规性吗?用于检测有关磁盘或内存的东西吗?

Was it meant to avoid conflict with an existing format? Existing standard compliance? Used to detect something concerning the disk or memory?

推荐答案

很明显，它是 leet .

7F听起来像精灵中的精灵.字母L可以用7表示.用F发音字母L，听起来像Elf.不能有其他字节，只能是0x7F.

7F sounds like Elf in leet. The letter L can be represented as 7 in leet. Pronounce the letter L with an F and it sounds like Elf. There couldn't be other byte but 0x7F.

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