汇编中的cmp

Question

I'm new to assembly and ran accross the following ling:

cmp 0x2c(%esp),%esi

It's clearly trying to compare, but I don't know what 0x2c(%esp) is. I'm using GDB, so a command to access that value would be helpful. The next line sees if the two values are equal.

Answer 1

我不熟悉您的汇编器的语法，但我收集到的结果是将寄存器ESI的内容与（堆栈指针+ 2C十六进制）内存位置的内容进行比较

Answer 2

This is at&t syntax. You can switch gdb to intel syntax using set disassembly-flavor intel to get more readable code. You can examine the value using for example x/d $esp+0x2c .