Use a std::map to map target syscall flag bits to host flag bits. This avoids having to track the number of elements in the map separately. Change-Id: I43bd54f5286f11b9635d46240a55742ddfdb0901 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/45899 Reviewed-by: Gabe Black <gabe.black@gmail.com> Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br> Maintainer: Gabe Black <gabe.black@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>