Question

Why do most compilers avoid using the ENTER instruction?

a.

It is a highly complex instruction that performs the work of many instructions

b.

It creates performance problems due to its lengthy microcode

c.

Both a and b

d.

None of the above

Posted under Reverse Engineering

Answer: (c).Both a and b Explanation:The ENTER instruction is a highly complex instruction that performs the work of quite a few instructions, and it is implemented using a fairly lengthy piece of microcode, which creates some performance problems. For this reason, most compilers seem to avoid using ENTER, even if they support nested code blocks for languages such as C and C++.

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