Add register definitions to stack_core.
(cherry picked from commit 5521841a42)
Change-Id: I2d9d2ae075efe8d8c92fac387d2ae30f9cbb999c
Add register definitions to stack_core.
(cherry picked from commit 5521841a42)
Change-Id: I2d9d2ae075efe8d8c92fac387d2ae30f9cbb999c