Add jni macro assembler skeleton for riscv64.

Note: Most functions are unimplemeted.

Test: m test-art-host-gtest
Bug: 283082089
Signed-off-by: Lifang Xia <lifang_xia@linux.alibaba.com>
Signed-off-by: Wendong Wang <wangwd@xcvmbyte.com>
Change-Id: Ifb0c6c15bd9e1159ea2c90edc306335ca634c1d8
4 files changed