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17 lines
364 B
17 lines
364 B
.code32
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SYSWRITE = 4 # sys_write()系统调用号
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.global mywrite
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.text
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mywrite:
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pushl %ebp
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movl %esp, %ebp
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pushl %ebx
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movl 8(%ebp),%ebx # ebx ：文件描述符
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movl 12(%ebp),%ecx # ecx ：缓冲区指针
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movl 16(%ebp),%edx # edx ：显示字符数
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movl $SYSWRITE,%eax # eax ：系统调用号
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int $0x80
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popl %ebx
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mov %ebp, %esp
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popl %ebp
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ret
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