tree 757afc374274bae4b0d978d76e7df915efeaae82
parent 0704741ad29c06129fa0cf09956d3c55b38a8b88
author Johnathan Van Why <jrvanwhy@google.com> 1607106856 -0800
committer Johnathan Van Why <jrvanwhy@google.com> 1607106856 -0800

Change r1 in four_arg_syscall to a u32.

I mistakenly kept it as a `usize` in my previous commit because memop passes pointers using r1, but four_arg_syscall is not used to call memop. Therefore the second argument can always be a u32.