动态链接和静态链接的指令点值 [英] instruction point value of dynamic linking and static linking

问题描述

通过使用Intel的引脚，我打印出了具有动态链接和静态链接的程序的指令指针(ip)值.

By using Intel's pin, I printed out the instruction pointer (ip) values for a program with dynamic linking and static linking.

而且我发现，即使它们是同一程序，它们的ip值也大不相同.

And I've found that their ip values are quite different, even though they are the same program.

具有静态链接的程序的第一个ip值显示为0x400f50.

A program with static linking shows 0x400f50 for its very first ip value.

但是具有动态链接的程序的第一个ip值显示为0x7f94f0762090

but a program with dynamic linking shows 0x7f94f0762090 for its first ip value

我不确定他们为什么会有这么大的差距.

I am not sure why they have that quite a large gap.

如果有人可以帮助我找出原因，我们将不胜感激

It would be appreciated if anyone could help me find out the reason

推荐答案

我不确定他们为什么会有这么大的差距.

I am not sure why they have that quite a large gap.

因为动态链接程序无法以二进制形式开始执行:在控制权转移到主可执行文件中的_start之前，前几千条指令在动态链接器(ld-linux)中执行.

Because a dynamically linked program does not start executing in the binary: the first few thousands of instructions are executed in the dynamic linker (ld-linux), before control is transferred to _start in the main executable.

另请参见此答案.

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