e2b@psuecl.bitnet (11/06/90)
I am having a problem writing a dynamic profiler for the SUN 4. I spawn a child process and overlay it with an existing program using the execl command. The SUN 4 does not have the necessary hardware to implement the single step command of the ptrace system call. When ptrace(SINGLE_STEP,...) is executed an I/O error is returned. If anyone knows how to dynamically single step through a program using ptrace or any other way, I would greatly appreciate you letting me know. I can be reached at E2B@PSUECL.bitnet, or please post a solution to this newsgroup. Eric Bass