add riscv32mini-nemu

scripts/riscv32mini-nemu.mk

@@ -0,0 +1,24 @@
+include $(AM_HOME)/scripts/isa/riscv.mk
+include $(AM_HOME)/scripts/platform/nemu.mk
+
+export PATH := $(PATH):$(abspath $(AM_HOME)/tools/rvmini)
+CC = rvmini-gcc
+AS = rvmini-gcc
+CXX = rvmini-g++
+
+CFLAGS  += -DISA_H=\"riscv/riscv.h\"
+COMMON_CFLAGS += -march=rv32i_zicsr -mabi=ilp32  # overwrite
+LDFLAGS       += -melf32lriscv                   # overwrite
+
+AM_SRCS += riscv/nemu/start.S \
+           riscv/nemu/cte.c \
+           riscv/nemu/trap.S \
+           riscv/nemu/vme.c
+
+AM_SRCS += riscv/npc/libgcc/div.S \
+           riscv/npc/libgcc/muldi3.S \
+           riscv/npc/libgcc/multi3.c \
+           riscv/npc/libgcc/ashldi3.c \
+           riscv/npc/libgcc/unused.c
+
+INC_PATH += $(AM_HOME)/am/src/riscv/npc/libgcc