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例如图4.11中的normal函数,用gcc -O2 -S编译的结果如图4.12所示。normal函数调用了一个有9个整数参数的外部函数,这样它必须有栈帧来为调用的子函数准备参数。可以看到,编译器生成了一个32字节的栈帧,把最后一个浮点参数9保存到偏移0,把返回地址$ra保存到偏移24。
其中不论是图 4.11: normal函数代码,还是图 4.12: normal函数的gcc -O2编译结果,都只有整形参数。 没有“浮点”参数。
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感谢,马上修复。
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其中不论是图 4.11: normal函数代码,还是图 4.12: normal函数的gcc -O2编译结果,都只有整形参数。
没有“浮点”参数。
The text was updated successfully, but these errors were encountered: