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How to analyze common block subroutines and its call tree?

bin zhou

I got a problem while my compiler works with OT(9), the problem is the stack pointer underflow and I have validated. The reason is OT(9) created new Common Block Subroutines in application, and some subroutines call other subroutines, Every additional Call increase the stack pointer by 2 Bytes.
So, I want to check Common Block Subroutines in map file, but it just list the location of Common Block Subroutines and I can't find the call tree related with Common Block Subroutines. How can I find the call tree related with Common Block Subroutines?