gcc编译器编译.bin文件出问题

bin\gcc -c test.c
bin\objcopy -O binary test.o binfile

其实我知道你们也不懂。
发发牢骚

The linker always uses a linker script. If you do not supply one yourself, the linker will use a default script that is compiled into the linker executable. You can use the ‘--verbose’ command line option to display the default linker script. Certain command line options, such as ‘-r’ or ‘-N’, will affect the default linker script.
You may supply your own linker script by using the ‘-T’ command line option. When you do this, your linker script will replace the default linker script.

文件名：aaa.lds
SECTIONS {
. = 0x00000000;
.text : { * (.text); }
. = 0x00000400;
.data : { * (.data); }
}
文件名：Assembler.s
.data # 数据段声明
msg : .string "Hello, world!//n" # 要输出的字符串
len = . - msg # 字串长度
.text # 代码段声明
.global _start # 指定入口函数
_start: # 在屏幕上显示一个字符串
movl $len, %edx # 参数三：字符串长度
movl $msg, %ecx # 参数二：要显示的字符串
movl $1, %ebx # 参数一：文件描述符(stdout)
movl $4, %eax # 系统调用号(sys_write)
int $0x80 # 调用内核功能
# 退出程序
movl $0,%ebx # 参数一：退出代码
movl $1,%eax # 系统调用号(sys_exit)
int $0x80 # 调用内核功能
dos mingw命令行：
as -o Assembler.o Assembler.s
ld -T aaa.lds -o sum-data.elf Assembler.o
objcopy -O binary data.elf binfile.bin
成功生成纯机器指令

又系统删贴。XXX