在GAS中，宏参数是按名称指定的。

In GAS, macro arguments are given by name. For example.

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_ syscall宏最多可定义6个参数(不过此处只显示了3个)。

The _syscall macros are defined up to six arguments deep (although only three are shown here).

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_ syscall宏最多可定义6个参数(不过此处只显示了3个)。

The _syscall macros are defined up to six arguments deep (although only three are shown here).

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