XLEN ?= 32

RISCV_TOOLCHAIN_PATH ?= $(wildcard ../../../../riscv-gnu-toolchain/drops)
POCL_CC_PATH ?= $(wildcard ../../../../pocl/drops_riscv_cc)
POCL_INC_PATH ?= $(wildcard ../include)
POCL_LIB_PATH ?= $(wildcard ../lib)
VORTEX_RT_PATH ?= $(wildcard ../../../runtime)
VX_SIMX_PATH ?= $(wildcard ../../../simx/obj_dir)

CC  = $(RISCV_TOOLCHAIN_PATH)/bin/riscv32-unknown-elf-gcc
CXX = $(RISCV_TOOLCHAIN_PATH)/bin/riscv32-unknown-elf-g++
DMP = $(RISCV_TOOLCHAIN_PATH)/bin/riscv32-unknown-elf-objdump
HEX = $(RISCV_TOOLCHAIN_PATH)/bin/riscv32-unknown-elf-objcopy
GDB = $(RISCV_TOOLCHAIN_PATH)/bin/riscv32-unknown-elf-gdb

VX_SRCS =  $(VORTEX_RT_PATH)/newlib/newlib.c
VX_SRCS += $(VORTEX_RT_PATH)/startup/vx_start.S
VX_SRCS += $(VORTEX_RT_PATH)/intrinsics/vx_intrinsics.S
VX_SRCS += $(VORTEX_RT_PATH)/io/vx_io.S $(VORTEX_RT_PATH)/io/vx_io.c
VX_SRCS += $(VORTEX_RT_PATH)/fileio/fileio.S
VX_SRCS += $(VORTEX_RT_PATH)/tests/tests.c
VX_SRCS += $(VORTEX_RT_PATH)/vx_api/vx_api.c

VX_CFLAGS = -nostartfiles -Wl,-Bstatic,-T,$(VORTEX_RT_PATH)/startup/vx_link$(XLEN).ld

CXXFLAGS =  -g -O0 -march=rv32im -mabi=ilp32 
CXXFLAGS += -ffreestanding # program may not begin at main()
CXXFLAGS += -Wl,--gc-sections # enable garbage collection of unused input sections
CXXFLAGS += -fno-rtti -fno-non-call-exceptions # disable RTTI and exceptions
CXXFLAGS += -I$(POCL_INC_PATH) -I.

VX_LIBS = -Wl,--whole-archive lib$(PROJECT).a -Wl,--no-whole-archive $(POCL_LIB_PATH)/libOpenCL.a
QEMU_LIBS = $(VORTEX_RT_PATH)/qemu/vx_api.c -Wl,--whole-archive lib$(PROJECT).a -Wl,--no-whole-archive $(POCL_LIB_PATH)/libOpenCL.a

PROJECT = sad

SRCS = main.cc args.c parboil_opencl.c ocl.c gpu_info.c file.c image.c OpenCL_common.cpp

all: $(PROJECT).dump $(PROJECT).hex

lib$(PROJECT).a: kernel.cl
	POCL_DEBUG=all POCL_DEBUG_LLVM_PASSES=1 LD_LIBRARY_PATH=$(RISCV_TOOLCHAIN_PATH)/lib:$(POCL_CC_PATH)/lib $(POCL_CC_PATH)/bin/poclcc -o lib$(PROJECT).a kernel.cl

$(PROJECT).elf: $(SRCS) lib$(PROJECT).a
	$(CXX) $(CXXFLAGS) $(VX_CFLAGS) $(VX_SRCS) $(SRCS) $(VX_LIBS) -o $(PROJECT).elf

$(PROJECT).qemu: $(SRCS) lib$(PROJECT).a
	$(CXX) $(CXXFLAGS) $(SRCS) $(QEMU_LIBS) -o $(PROJECT).qemu

$(PROJECT).hex: $(PROJECT).elf
	$(HEX) -O ihex $(PROJECT).elf $(PROJECT).hex

$(PROJECT).dump: $(PROJECT).elf
	$(DMP) -D $(PROJECT).elf > $(PROJECT).dump

run: $(PROJECT).hex
	POCL_DEBUG=all $(VX_SIMX_PATH)/Vcache_simX -E $(PROJECT).hex -s -b 1> emulator.debug

qemu: $(PROJECT).qemu
	POCL_DEBUG=all $(RISCV_TOOLCHAIN_PATH)/bin/qemu-riscv32 -d in_asm -D debug.log $(PROJECT).qemu

gdb-s: $(PROJECT).qemu
	POCL_DEBUG=all $(RISCV_TOOLCHAIN_PATH)/bin/qemu-riscv32 -g 1234 -d in_asm -D debug.log $(PROJECT).qemu

gdb-c: $(PROJECT).qemu
	$(GDB) $(PROJECT).qemu

clean:
	rm -rf *.o *.elf *.dump *.hex *.qemu *.log *.debug