我这里是ubuntu x86-64，照着抄你的代码运行非常正常。
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编译运行：
as run.s -o run.o
ld run.o -o run
./run
GDB调试也没问题
GNU gdb (Ubuntu 8.1.1-0ubuntu1) 8.1.1
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and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
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For help, type "help".
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Reading symbols from run...done.
(gdb) b _start
Breakpoint 1 at 0x400078: file run.s, line 6.
(gdb) r
Starting program: /home/×××××××/Desktop/run
Breakpoint 1, _start () at run.s:6
6 movl $1, %eax
(gdb) ni
7 movl $0, %ebx
(gdb) ni
8 int $0x80
(gdb) ni
[Inferior 1 (process 10617) exited normally]
(gdb) b _start
linux中的“段错误”通常是由内存分配失败或指针误指引起！
请检查程序中内存分配语句及其释放过程是否合理！
出段错误是一件好事。。。说明你的代码在指针这里出了问题。。。最怕的是编译过了但是程序跑飞了的这种逻辑错误。。改都不知道怎么改。。。出段错误 你在程序里你觉得肯能有错的地方加上行打印 printf("%d\n",__LINE__); 或是隔几行加一个。。然后看程序死在那了。