Added hello world project

riscv-bldc-forced-commutation/Makefile

@@ -0,0 +1,28 @@
+
+TARGET    = riscv-bldc
+C_SRCS    = $(wildcard src/*.c)  $(BSP_BASE)/drivers/fe300prci/fe300prci_driver.c $(BSP_BASE)/drivers/plic/plic_driver.c
+CXX_SRCS  = $(wildcard src/*.cpp) 
+HEADERS   = $(wildcard src/*.h)
+CFLAGS    = -g 
+CFLAGS   += -fno-builtin-printf -DUSE_PLIC -DUSE_M_TIME -DNO_INIT -I./src
+CXXFLAGS  = -fno-use-cxa-atexit
+LDFLAGS   = -Wl,--wrap=printf
+LDFLAGS  += -g -lstdc++ -fno-use-cxa-atexit -march=$(RISCV_ARCH) -mabi=$(RISCV_ABI) -mcmodel=medany
+
+
+BOARD=freedom-e300-hifive1
+LINK_TARGET=flash
+RISCV_ARCH=rv32imac
+RISCV_ABI=ilp32
+
+TOOL_DIR?=/opt/riscv/FreedomStudio/20180122/SiFive/riscv64-unknown-elf-gcc-20171231-x86_64-linux-centos6/bin
+BSP_BASE = ./bsp
+include $(BSP_BASE)/env/common.mk
+
+.PHONY: all
+all: $(TARGET).dump
+
+$(TARGET).dump: $(TARGET)
+	$(TOOL_DIR)/$(TRIPLET)-objdump -d -S -C $< > $@
+
+	

riscv-bldc-forced-commutation/bsp/env/common.mk

@@ -28,9 +28,10 @@ LDFLAGS += -T $(LINKER_SCRIPT) -nostartfiles
 LDFLAGS += -L$(ENV_DIR) --specs=nano.specs
 
 ASM_OBJS := $(ASM_SRCS:.S=.o)
-C_OBJS := $(C_SRCS:.c=.o)
+C_OBJS   := $(C_SRCS:.c=.o)
+CXX_OBJS := $(CXX_SRCS:.cpp=.o)
 
-LINK_OBJS += $(ASM_OBJS) $(C_OBJS)
+LINK_OBJS += $(ASM_OBJS) $(C_OBJS) $(CXX_OBJS)
 LINK_DEPS += $(LINKER_SCRIPT)
 
 CLEAN_OBJS += $(TARGET) $(LINK_OBJS)
@@ -39,15 +40,24 @@ CFLAGS += -march=$(RISCV_ARCH)
 CFLAGS += -mabi=$(RISCV_ABI)
 CFLAGS += -mcmodel=medany
 
-$(TARGET): $(LINK_OBJS) $(LINK_DEPS)
-	$(CC) $(CFLAGS) $(INCLUDES) $(LINK_OBJS) -o $@ $(LDFLAGS)
+TRIPLET?=riscv64-unknown-elf
+CXX=$(TOOL_DIR)/$(TRIPLET)-c++
+CC=$(TOOL_DIR)/$(TRIPLET)-gcc
+LD=$(TOOL_DIR)/$(TRIPLET)-gcc
 
+
+$(TARGET): $(LINK_OBJS) $(LINK_DEPS)
+	$(LD) $(LINK_OBJS) $(LDFLAGS) $(LIBWRAP) -o $@
+	
 $(ASM_OBJS): %.o: %.S $(HEADERS)
 	$(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $<
 
 $(C_OBJS): %.o: %.c $(HEADERS)
 	$(CC) $(CFLAGS) $(INCLUDES) -include sys/cdefs.h -c -o $@ $<
 
+$(CXX_OBJS): %.o: %.cpp $(HEADERS)
+	$(CXX) $(CFLAGS) $(CXXFLAGS) $(INCLUDES) -include sys/cdefs.h -c -o $@ $<
+
 .PHONY: clean
 clean:
 	rm -f $(CLEAN_OBJS)