AFLAGS=-felf64
AS=yasm $(AFLAGS)
CFLAGS= -ffreestanding -mno-red-zone  -mcmodel=large
CFLAGS= -Wall -Iinclude -Ipci -Iklib -I. -std=c99 -nostdlibinc -Wno-parentheses -ffreestanding -mcmodel=large -mno-red-zone -mno-mmx -mno-sse -mno-sse2 -fomit-frame-pointer
LDFLAGS= -L. -Tlink64.ld
CFLAGS32= -ffreestanding -mno-red-zone -mno-mmx -mno-sse -mno-sse2
OS=$(shell uname -s)

DIS= objdump -M intel -d

LIBSRC=$(wildcard klib/*.c)
#LIBOBJS:=$(addsuffix .o,$(basename, $(wildcard klib/*.c)))
LIBOBJS:=$(addsuffix .o, $(basename $(wildcard klib/*.c)))
#LIBOBJS:=$(addprefix klib/, $(LIBOBJS))

#PATH:=/home/nw/src/kernel/cc/sysroot/bin:$(PATH)
#export PATH

CC=clang -target amd64-elf-zos
LD=ld
OBJCOPY=objcopy

ifeq ($(OS),Darwin)
#	CC=/opt/local/libexec/llvm-3.9/bin/clang
	LD=x86_64-elf-ld
	AR=x86_64-elf-ar
	OBJCOPY=x86_64-elf-objcopy
endif

zos: zos64
	$(OBJCOPY) $< -O elf32-i386 $@

usermode.o: usermode.c
	$(CC) $(CFLAGS) -fpic -c -o $@ $<

include/errno.h: include/errno.in tools/mkerrno
	tools/mkerrno $< > $@

libklib.a: CFLAGS+=-D_PDCLIB_restrict=restrict
libklib.a: $(LIBOBJS)
	$(AR) rcu $@ $(LIBOBJS)

vfs/vfs.o: vfs/vfs.c vfs/vfs.h | include/errno.h
vfs/pipes.o: vfs/pipes.c vfs/vfs.h | include/errno.h

libvfs.a: vfs/pipes.o vfs/vfs.o
	$(AR) rcu $@ $+

pci/func.o: pci/func.c

libpci.a: pci/pci.o pci/func.o
	$(AR) rcu $@ $+

pic.o: pic.h interrupt.h

zos64: libklib.a
zos64: link64.ld

KOBJS= boot32.o bootz.o kernel.o interrupt.o idt.o \
       pic.o ioport.o timer.o tty.o mem.o \
       memx64.o spinlock.o process.o taskx64.o kbd.o \
       cpu.o syscalls.o smp.o \
       usermain.o
KLIBS=libpci.a libklib.a

zos64: $(KOBJS) $(KLIBS) link64.ld
	$(LD) $(LDFLAGS) -z max-page-size=0x1000 -nostdlib $(KOBJS) $(KLIBS) -o $@

zemu: zos
	#qemu-system-x86_64 -d in_asm,op -m 512M -kernel $< -vnc :0
	qemu-system-x86_64 -monitor stdio -m 256MB -kernel $< -vnc :0 -append 'mboot hb' \
		    -drive file=rdisk.img,if=none,id=mydisk \
		        -device ich9-ahci,id=ahci \
			    -device ide-drive,drive=mydisk,bus=ahci.0
		    #-device ide-hd,drive=mydisk
cemu: zos
	#qemu-system-x86_64 -d in_asm,op -m 512M -kernel $< -vnc :0
	qemu-system-x86_64 -monitor stdio -m 256MB -kernel $< -display curses -append 'mboot hb' \
		    -drive file=rdisk.img,if=none,id=mydisk \
		        -device ich9-ahci,id=ahci \
			    -device ide-drive,drive=mydisk,bus=ahci.0
		    #-device ide-hd,drive=mydisk

rdisk.img:
	qemu-img create -f qcow2 $@ 1G

mem.o: mem.c mem.h multiboot.h
interrupt.o: interrupt.c interrupt.h
process.o: process.c process.h

#		-initrd TODO
memu: zos rdisk.img
	#qemu-system-x86_64 -d in_asm,op -m 512M -kernel $< -vnc :0
	qemu-system-x86_64 $(SMP) -d cpu_reset -monitor stdio -m 256MB \
		-kernel $< -append 'mboot hb' \
		    -drive file=rdisk.img,if=none,id=mydisk \
		        -device ich9-ahci,id=ahci \
			    -device ide-drive,drive=mydisk,bus=ahci.0
		    #-device ide-hd,drive=mydisk

cemu2: zos
	qemu-system-x86_64 -display curses -m 512M -kernel $< -append 'mboot hb'

kernel.o: kernel.c multiboot.h
	$(CC) $(CFLAGS) -o $@ -c $<

clean:
	rm -f *.o *.a zos64 zos klib/*.o vfs/*.o pci/*.o ahci/*.o

%.o%.s:
	$(AS) -o $@ $<

%.o%.c:
	$(CC) $(CFLAGS) -c -o $@ $<

tprintk.o: printk.c
	cc -Wall -Wno-parentheses -I. -c -o $@ $+

test: t/t_printk tprintk.o
	t/t_printk

t/t_printk.o: t/t_printk.c
	cc -Wall -I. -c -o $@ $+

t/t_printk: tprintk.o t/t_printk.o
	cc -Wall -o $@ $+

%.d%.o:
	$(DIS) $<