#----------------------------------------------------------------------------#
#                           GNU GPL OS/K                                     #
#                                                                            #
#  Authors:    spectral`                                                     #
#              NeoX                                                          #
#                                                                            #
#  Desc:       Project Makefile                                              #
#----------------------------------------------------------------------------#

CCNAME="/opt/cross-cc/bin/x86_64-elf-gcc"
CC2NAME=gcc
COPTIM=-O2
CLDSCR=-T kernel.ld
CWARNS=-pedantic -Wall -Wextra -Werror
CINCLUDES=-isystem./kaleid/include
CDEFINES=

CFLAGS1=-nostdlib -ffreestanding -mcmodel=large
CFLAGS2=-mno-red-zone -mno-mmx -mno-sse -mno-sse2
CFLAGS=$(CFLAGS1) $(CFLAGS2)

CC=$(CCNAME) $(COPTIM) $(CWARNS) $(CFLAGS) $(CDEFINES) $(CINCLUDES)
KCC=$(CC) -D_OSK_SOURCE -D_KALEID_KERNEL

ASM=nasm
ASMFLAGS=
BOOTFLAGS=-f bin

BINDIR=../bin
OBJDIR=../obj

BOOTDIR=boot
COMMDIR=kaleid/common
KERNDIR=kaleid/kernel
SYSTDIR=kaleid/system
LINXDIR=kaleid/common/test
INCDIR=kaleid/include

all: bootloader kernel

boot.mbr.s: $(BOOTDIR)/mbr.s $(BOOTDIR)/mbr.inc
	$(ASM) $(BOOTFLAGS) $(BOOTDIR)/mbr.s -o $(OBJDIR)/boot/mbr.bin

boot.loader.s: $(BOOTDIR)/loader.s
	$(ASM) $(BOOTFLAGS) $(BOOTDIR)/loader.s -o $(OBJDIR)/boot/loader.bin

bootloader: boot.mbr.s boot.loader.s
	cp $(OBJDIR)/boot/mbr.bin $(BINDIR)/mbr.bin
	cp $(OBJDIR)/boot/loader.bin $(BINDIR)/loader.bin
    
#----------------------------------------------------------------------------#
# TESTING MAKEFILE

pseudo_kern:
	$(ASM) $(BOOTFLAGS) $(BOOTDIR)/pseudo_kernel.s -o $(OBJDIR)/boot/pkernel.bin

testing: bootloader pseudo_kern
	cat $(BINDIR)/bootloader.bin $(OBJDIR)/boot/pkernel.bin > $(BINDIR)/boot.bin

#----------------------------------------------------------------------------#
# COMMON MAKEFILE

COBJDIR=$(OBJDIR)/$(COMMDIR)
LOBJDIR=$(OBJDIR)/$(LINXDIR)

#COMMDEPS=$(COMMDIR)/common.h $(COMMDIR)/stdlib.h $(KERNDIR)/config.h
COMMDEPS=$(INCDIR)/kaleid.h  $(INCDIR)/kaldefs.h $(INCDIR)/kaltypes.h \
         $(INCDIR)/kalmask.h $(INCDIR)/kalmask.h $(INCDIR)/kalassrt.h

COMMSRCS=$(COMMDIR)/string.c $(COMMDIR)/status.c \
         $(COMMDIR)/convert.c $(COMMDIR)/memory.c

COMMOBJS=$(COBJDIR)/string.o $(COBJDIR)/status.o \
         $(COBJDIR)/convert.o $(COBJDIR)/memory.o

common: $(COMMDEPS) $(COMMSRCS)
	$(KCC) -c $(COMMDIR)/string.c -o $(COBJDIR)/string.o
	$(KCC) -c $(COMMDIR)/status.c -o $(COBJDIR)/status.o
	$(KCC) -c $(COMMDIR)/memory.c -o $(COBJDIR)/memory.o
	$(KCC) -c $(COMMDIR)/convert.c -o $(COBJDIR)/convert.o

CCC=$(CC2NAME) $(COPTIM) $(CWARNS) $(CINCLUDES)

test-common:  $(COMMSRCS)
	$(CCC) -c $(COMMDIR)/string.c -o $(COBJDIR)/string.o
	$(CCC) -c $(COMMDIR)/status.c -o $(COBJDIR)/status.o
	$(CCC) -c $(COMMDIR)/memory.c -o $(COBJDIR)/memory.o
	$(CCC) -c $(COMMDIR)/convert.c -o $(COBJDIR)/convert.o
	$(CCC) -c $(LINXDIR)/test-common.c -o $(LOBJDIR)/test-common.o
	$(CCC) $(COMMOBJS) $(LOBJDIR)/test-common.o -o $(BINDIR)/kaleid-common.elf

#----------------------------------------------------------------------------#
# KERNEL MAKEFILE

KOBJDIR=$(OBJDIR)/$(KERNDIR)

KERNDEPS=common $(KERNDIR)/init.h     $(KERNDIR)/io/terminal.h $(KERNDIR)/ke/lock.h \
                $(KERNDIR)/io/ports.h $(KERNDIR)/ke/panic.h    $(KERNDIR)/ke/state.h

KERNSRCS=$(KERNDIR)/init.c     $(KERNDIR)/io/terminal.c $(KERNDIR)/ke/lock.c \
         $(KERNDIR)/io/ports.c $(KERNDIR)/ke/panic.c    $(KERNDIR)/ke/state.c

KERNOBJS=$(KOBJDIR)/init.o     $(KOBJDIR)/io/terminal.o $(KOBJDIR)/ke/lock.o \
         $(KOBJDIR)/io/ports.o $(KOBJDIR)/ke/panic.o    $(KOBJDIR)/ke/state.o

kernel: common $(KERNSRCS)
	$(KCC) -c $(KERNDIR)/init.c         -o $(KOBJDIR)/init.o
	$(KCC) -c $(KERNDIR)/ke/lock.c     -o $(KOBJDIR)/ke/lock.o
	$(KCC) -c $(KERNDIR)/ke/state.c     -o $(KOBJDIR)/ke/state.o
	$(KCC) -c $(KERNDIR)/ke/panic.c     -o $(KOBJDIR)/ke/panic.o
	$(KCC) -c $(KERNDIR)/io/ports.c     -o $(KOBJDIR)/io/ports.o
	$(KCC) -c $(KERNDIR)/io/terminal.c  -o $(KOBJDIR)/io/terminal.o
	$(KCC) $(CLDSCR) $(COMMOBJS) $(KERNOBJS) -o $(BINDIR)/kaleid-kernel.elf

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