[ros-dev] About @KfLowerIrql at 4

[Fan Zhang]

hi, i'm a newbie of ReacOS.
I looked a piece of code in syscall.S which is come from 0.2.7 edtion.

    /* Raise IRQL to APC_LEVEL */
    movl $1, %ecx
    call @KfRaiseIrql at 4

could anybody help me explain why the function is decorated by @ in the head?
and why transfer argument by ecx?


Thank you



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