Slim down print.s

[nameless-os.git] / Makefile

diff --git a/Makefile b/Makefile
index 9d95b1ef97134bcebc837fe4ab4cfab1e6fff45a..848c7959b14d9a1d439b3980c83cf7c6dedc0ce4 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1,18 +1,43 @@
-AS = yasm # choose yasm or nasm here
-ASFLAGS = -f bin # compile a raw binary
+AS = yasm
+LD = i686-elf-ld
+CC = i686-elf-gcc
 
-boot: boot.s print.s
-       $(AS) $(ASFLAGS) -o $@ boot.s
+GIT_REV = $(shell git rev-parse --short HEAD)
 
-clean:
-       -rm boot
+CFLAGS = -std=gnu89 -g -Iinclude/arch/x86 -ffreestanding -DGIT_COMMIT=\"$(GIT_REV)\"
+
+KERNEL_OBJ = kernel/entry.o kernel/arch/x86/tty/tty.o kernel/drivers/irq/i8259a.o kernel/arch/x86/irq/idt.o kernel/arch/x86/irq/sample_handler.o kernel/kernel.o
+
+all: boot.img kernel/kernel.elf
+
+boot.img: boot/x86/boot kernel/kernel.bin
+       cat boot/x86/boot kernel/kernel.bin > $@
+       truncate -s1440K $@
+
+boot/x86/boot: boot/x86/boot.s boot/x86/a20.s boot/x86/protected.s boot/x86/print.s
+       $(AS) -f bin boot/x86/boot.s -o $@
+
+kernel/kernel.bin: ${KERNEL_OBJ}
+       $(LD) -o $@ -T kernel/linker.ld ${KERNEL_OBJ}
+
+kernel/entry.o: kernel/entry.s
+       $(AS) -f elf kernel/entry.s -o $@
 
-run:
-       qemu-system-i386 boot
+kernel/arch/x86/tty/tty.o: kernel/arch/x86/tty/tty.c
 
-help:
-       @echo "Run 'make' to compile."
-       @echo "Run 'make clean' to delete compiled objects."
-       @echo "Run 'make run' to run the compiled object. Must have qemu-system-i386 (but x86_64 should work too)."
+kernel/drivers/irq/i8259a.o: kernel/drivers/irq/i8259a.c
+
+kernel/arch/x86/irq/idt.o: kernel/arch/x86/irq/idt.c
+
+kernel/arch/x86/irq/sample_handler.o: kernel/arch/x86/irq/sample_handler.c
+       $(CC) $(CFLAGS) -mgeneral-regs-only -c kernel/arch/x86/irq/sample_handler.c -o $@
+
+kernel/kernel.o: kernel/kernel.c
+
+kernel/kernel.elf: kernel/kernel.bin
+       $(LD) -o $@ -T kernel/linker.ld ${KERNEL_OBJ} --oformat=elf32-i386
+
+clean:
+       rm boot/x86/boot kernel/kernel.bin kernel/kernel.elf ${KERNEL_OBJ} boot.img
 
-.PHONY = clean run help
+.PHONY: all clean