# Annotation
#==================================================
# Script is capable of building different applications.
# Application target is an appropriate *.elf file name, 
# (e.g. "opcodes.elf") which must be listed in 
# ${ALL_ELF} variable and must have at least one rule
# with depending object files.
#
# See "Rules of different projects".
#
# WARNING !!!
# As the link process is not ideally implemented, when
# you are building an app then "boot.o" and "no_os.o"
# are usually dependencies. And "boot.o" MUST be listed
# as the first dependency!

AS             = mips-elf-as
CC             = mips-elf-gcc
LD             = mips-elf-ld
OD             = mips-elf-objdump

LDFLAGS        = -eentry -Ttext=0 -N -s
CFLAGS         = -I ${PLASMA_INCLUDE}

PLASMA_INCLUDE = ../plasma/tools

ALL_ELF        = opcodes.elf test.elf



.PHONY: help clean
help:


# Rules of different projects
#==================================================
opcodes.elf: opcodes.o

test.elf: boot.o test.o no_os.o


# General rules:
#==================================================
${ALL_ELF}:
	${LD} ${LDFLAGS} -Map ${@:.elf=.map} -o $@ $^
	${OD} -d -t -S  $@ > ${@:.elf=.lst}

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

%.o: %.asm
	${AS} -o $@ $<

%.o: %.a
	${AS} -o $@ $<


# Special .PHONY targets
#==================================================
clean:
	rm -r *.o *.elf *.lst *.map

help:
	@echo Select one of the targets:
	@echo ${ALL_ELF}


# Additional rules for "boot.o" and "no_os.o"
#==================================================
%.o: ${PLASMA_INCLUDE}/%.asm
	${AS} -o $@ $<

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