riscv: Move trap handler codes to mtrap.S
Currently the M-mode trap handler codes are in start.S. For future
extension, move them to a separate file mtrap.S.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Anup Patel <anup@brainfault.org>
diff --git a/arch/riscv/cpu/Makefile b/arch/riscv/cpu/Makefile
index 2cc6757..6bf6f91 100644
--- a/arch/riscv/cpu/Makefile
+++ b/arch/riscv/cpu/Makefile
@@ -4,4 +4,4 @@
extra-y = start.o
-obj-y += cpu.o
+obj-y += cpu.o mtrap.o