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On SPARC, the kernel needs to be able to restore the current register window from the stack when returning from a syscall. That presents a bit of a problem in freeAndExit since we're deallocating the stack! The good news is that, since we do not care about the contents of the incoming and local registers at that point, we can just tell the kernel that our stack is this undefined global buffer.
On SPARC, the kernel needs to be able to restore the current register window from the stack when returning from a syscall. That presents a bit of a problem in
freeAndExitsince we're deallocating the stack! The good news is that, since we do not care about the contents of the incoming and local registers at that point, we can just tell the kernel that our stack is this undefined global buffer.