You may find the source for Devel::StackTrace instructive.

$ perl -MDevel::StackTrace -e '
  hlagh("bar");
  sub hlagh { quork("baz") }
  sub quork { print Devel::StackTrace->new()->as_string() }
'
Trace begun at -e line 1
main::quork('baz') called at -e line 1
main::hlagh('bar') called at -e line 1
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