无法使用gcc编译asm hello世界 [英] Can't compile asm hello world with gcc
问题描述
这是 hello.s
.data
hello_str:
.string "Hello, world!\n"
.set hello_str_length, . - hello_str - 1
.text
.globl main
.type main, @function
main:
movl $4, %eax
movl $1, %ebx
movl $hello_str, %ecx
movl $hello_str_length, %edx
int $0x80
movl $1, %eax
movl $0, %ebx
int $0x80
.size main, . - main
我运行 gcc hello.s -o hello 并收到以下错误消息:
I run gcc hello.s -o hello and get this error:
/usr/bin/ld: /tmp/cc6ILJpd.o: relocation R_X86_64_32 against '.data' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: Nonrepresentable section on output
collect2:错误:ld返回1个退出状态
collect2: error: ld returned 1 exit status
然后我尝试运行 gcc hello.s -fPIC -o hello ,但是它什么也没做,错误是相同的.
Then I've tried running gcc hello.s -fPIC -o hello, but it didn't do anything, the error is the same.
我做错了什么?Ubuntu 17.04,GCC 6.3.0.
What am I doing wrong? Ubuntu 17.04, GCC 6.3.0.
推荐答案
您正在尝试以amd64模式编译i386代码,该方法不起作用.尝试以下方法:
You're trying to compile i386 code in amd64 mode, which doesn't work. Try this instead:
gcc -m32 hellos. -o hello
...强制执行i386模式.
...to force i386 mode.
我认识到这一点是因为我知道i386和amd64代码的样子,但是更好的线索是重定位名称 R_X86_64_32
.X86_64是amd64架构的另一个名称;所以这就是说X86_64体系结构是32位重定位.鉴于您没有为该体系结构编写代码,因此有一个合理的迹象表明它是错误的编译器.
I recognised this because I know what i386 and amd64 code looks like, but a better clue is in the relocation name, R_X86_64_32
. X86_64 is another name for the amd64 architecture; so what this is saying is that it's a 32 bit relocation for the X86_64 architecture. Given that you're not writing code for that architecture, that's a reasonable sign that it's the wrong compiler.
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