#/*Copyright 2020-2021 T-Head Semiconductor Co., Ltd.
#
#Licensed under the Apache License, Version 2.0 (the "License");
#you may not use this file except in compliance with the License.
#You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
#Unless required by applicable law or agreed to in writing, software
#distributed under the License is distributed on an "AS IS" BASIS,
#WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#See the License for the specific language governing permissions and
#limitations under the License.
#*/
#*/
#*/
# the compiler toolset setting

TOOL_EXTENSION = /opt/riscv/bin

CC      = ${TOOL_EXTENSION}/riscv64-unknown-elf-gcc
AS      = ${TOOL_EXTENSION}/riscv64-unknown-elf-as
LINK    = ${TOOL_EXTENSION}/riscv64-unknown-elf-ld
OBJDUMP = ${TOOL_EXTENSION}/riscv64-unknown-elf-objdump
OBJCOPY = ${TOOL_EXTENSION}/riscv64-unknown-elf-objcopy
CONVERT =./Srec2vmem

SSRC = $(wildcard *.S)
sSRC = $(wildcard *.s)
CSRC = $(wildcard *.c)

OBJECTS = $(SSRC:%.S=%.o) $(sSRC:%.s=%.o) $(CSRC:%.c=%.o)

CPU_ARCH_FLAG_0=e906f 
CASENAME=debug 
FILE=debug

FLAG_MARCH = -mtune=e906 
FLAG_MARCH += -march=rv32imafc
FLAG_ABI   = -mabi=ilp32f

CFLAGS = ${FLAG_MARCH} ${FLAG_ABI} 

ifeq (${CASENAME}, coremark)
  CFLAGS +=-c -v -O3 -funroll-all-loops -fgcse-sm -finline-limit=500 -fno-schedule-insns --param max-rtl-if-conversion-unpredictable-cost=100 -msignedness-cmpiv -fno-code-hoisting -mno-thread-jumps1 -mno-iv-adjust-addr-cost -mno-expand-split-imm -fno-tree-loop-distribution
else
  CFLAGS += -c -v -O2
endif

LINKFLAGS = -Tlinker.lcf -nostartfiles ${FLAG_MARCH} ${FLAG_ABI}

# LINKLIBS  = -L${TOOL_PATH}/lib/gcc/riscv64-unknown-elf/8.1.0/rv32imac
# LINKLIBS += -L${TOOL_PATH}/riscv64-unknown-elf/lib/rv32imac
# LINKLIBS += -L${TOOL_PATH}/riscv64-unknown-elf/lib

LINKLIBS = -lc -lgcc

OBJDUMPFLAGS = -S -Mnumeric

HEXFLAGS	= -O srec

%.o : %.c
	${CC} -c ${CFLAGS} -o $@ $<

%.o : %.s
	${CC} -c ${CFLAGS} -o $@ $<

%.o : %.S
	${CC} -c ${CFLAGS} -o $@ $<

${FILE}.elf : ${OBJECTS} linker.lcf
	${CC} ${LINKFLAGS} ${LINKLIBS} ${OBJECTS} -o $@ -lm 

${FILE}.obj : ${FILE}.elf
	${OBJDUMP} ${OBJDUMPFLAGS} $< > $@

INST_HEX = ${FILE}_inst.hex
DATA_HEX = ${FILE}_data.hex
FILE_HEX = ${FILE}.hex

${FILE}.hex : ${FILE}.elf
	${OBJCOPY} ${HEXFLAGS} $< ${INST_HEX} -j .text*  -j .rodata* -j .eh_frame*
	${OBJCOPY} ${HEXFLAGS} $< ${DATA_HEX} -j .data*  -j .bss -j .COMMON
	${OBJCOPY} ${HEXFLAGS} $< $@ 

INST_PAT = inst.pat
DATA_PAT = data.pat
FILE_PAT = case.pat

%.pat	: %.hex
	rm -f *.pat
	${CONVERT} ${INST_HEX} ${INST_PAT}
	${CONVERT} ${DATA_HEX} ${DATA_PAT}
	${CONVERT} ${FILE_HEX} ${FILE_PAT}


#--------------------------------------------------------------------
# target setting
.PHONY :all
all : ${FILE}.pat ${FILE}.hex ${FILE}.elf ${FILE}.obj

#---------------------------------------------------------------------
# clean some medium code and .pat
.PHONY :clean 
clean:
	rm -rf *.o *.pat  *.obj *.hex