In this homework mini-project your team will add a simplesystem call to xv6. Your new syscall should look like this: inthowmanysys(void) Your system call returns the number of systemcalls that have taken place so far.
HintYou can start by taking a look and using another system call,like getpid() to get an idea of how the code works . Most of thetime will be spent on understanding the code. There shouldn’t be awhole lot of code added you can use any editor and gcc as acompiler.
Check this Lab tutorial for C programming in three easy pieceswebsite:http://pages.cs.wisc.edu/~remzi/OSTEP/lab-tutorial.pdf
DetailsSetting up the environment.-Download XV6-Unzip the file-tar
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