将动态链接器与qemu-arm一起使用 [英] Using dynamic linker with qemu-arm

问题描述

我有一个使用 arm-linux-gnueabi 工具链编译的非常简单的arm可执行文件.我可以使用 qemu-arm 执行它，而不会出现任何问题:

I have a very simple arm executable compiled with the arm-linux-gnueabi toolchain. I can execute it with qemu-arm without any problem:

$ qemu-arm -L /usr/arm-linux-gnueabi/ ./a.out
Hello world !

运行没有任何参数的链接器似乎也可以:

Running the linker without any argument seems to work as well:

qemu-arm /usr/arm-linux-gnueabi/lib/ld-linux.so.3
Usage: ld.so [OPTION]... EXECUTABLE-FILE [ARGS-FOR-PROGRAM...]
You have invoked `ld.so', the helper program for shared library executables.
...

但是，如果我希望链接程序运行我的可执行文件，则会发生以下情况:

However if I want the linker to run my executable, here is what happens:

$ qemu-arm -L /usr/arm-linux-gnueabi/ /usr/arm-linux-gnueabi/lib/ld-linux.so.3 a.out
a.out: error while loading shared libraries: a.out: cannot open shared object file

这是strace的输出: https://pastebin.com/uJ7AhBdh

Here is the output of strace: https://pastebin.com/uJ7AhBdh

知道为什么会这样吗?

推荐答案

我无法在Ubuntu 20.04上重现该问题:

I can't reproduce the problem on Ubuntu 20.04:

sudo apt install gcc-arm-linux-gnueabihf qemu-user
printf '
#include <stdio.h>
#include <stdlib.h>

int main() {
    puts("hello world");
    return EXIT_SUCCESS;
}
' >  hello_world.c
qemu-arm -L /usr/arm-linux-gnueabihf ./hello_world

和aarch64:

sudo apt install gcc-aarch64-linux-gnu qemu-user
aarch64-linux-gnu-gcc -ggdb3 -static -o hello_world hello_world.c
qemu-aarch64 -L /usr/aarch64-linux-gnu ./hello_world

都很好.

您还可以提供确切的发行版吗?

Can you also provide your exact distro version?

已针对GDB步骤调试删除:

Reletated for GDB step debug: How to GDB step debug a dynamically linked executable in QEMU user mode?

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