inline \ MACROs

Hi,
I want to avoid the CALL \ RET overhead of a certain function which is called only once in my program.

I understand the uVision compiler does not support the inline keyword (http://www.keil.com/support/docs/1755.htm), and I should use macros instead.
The problem is that uVision cannot step into macros when debugging.

Is there any good solution for this problem?

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