Makefile

   1 export AS = yasm
   2 export CC = i686-elf-gcc
   3 QEMU = qemu-system-i386 -monitor stdio
   4
   5 export GIT_REV = $(shell git describe --long HEAD)
   6
   7 CFLAGS = -std=gnu99 -g -Iinclude/arch/x86 -ffreestanding -DGIT_COMMIT=\"$(GIT_REV)\"
   8
   9 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/arch/x86/time/i8254.o kernel/kernel.o
  10 BOOTLOADER_OBJ = boot/x86/mbr boot/x86/vbr-fat32 boot/x86/stage3/LOADER.BIN
  11
  12 default: kernel/kernel.elf bootloader
  13
  14 all: default boot/x86/disk.img
  15
  16 bootloader: $(BOOTLOADER_OBJ)
  17
  18 run: all
  19         $(QEMU) boot/x86/disk.img
  20
  21 debug: all
  22         $(QEMU) -s -S boot/x86/disk.img
  23
  24 boot/x86/mbr: boot/x86/mbr.s
  25 boot/x86/vbr-fat32: boot/x86/vbr-fat32.s boot/x86/fat32/*.s
  26 boot/x86/stage3/LOADER.BIN: boot/x86/stage3/*.s boot/x86/fat32/*.s
  27 $(BOOTLOADER_OBJ):
  28         $(MAKE) -C boot/x86
  29
  30 boot/x86/disk.img: boot/x86/mbr boot/x86/vbr-fat32 boot/x86/stage3/LOADER.BIN boot/x86/disk.dump kernel/kernel.bin
  31         truncate -s1G boot/x86/disk.img
  32         sfdisk boot/x86/disk.img < boot/x86/disk.dump
  33         mkfs.fat -F 32 --offset 2048 boot/x86/disk.img
  34         dd if=boot/x86/mbr of=boot/x86/disk.img bs=440 count=1 conv=notrunc
  35         dd if=boot/x86/vbr-fat32 of=boot/x86/disk.img bs=1 skip=90 seek=1048666 conv=notrunc
  36         mcopy -i boot/x86/disk.img@@1M boot/x86/stage3/LOADER.BIN ::.
  37         mcopy -i boot/x86/disk.img@@1M kernel/kernel.bin ::./KERNEL.BIN
  38
  39 kernel/kernel.bin: ${KERNEL_OBJ} kernel/linker.ld
  40         $(CC) -ffreestanding -nostdlib -o $@ -T kernel/linker.ld ${KERNEL_OBJ}
  41
  42 kernel/entry.o: kernel/entry.s
  43         $(AS) -f elf $< -o $@
  44
  45 kernel/arch/x86/irq/sample_handler.o: kernel/arch/x86/irq/sample_handler.c
  46         $(CC) $(CFLAGS) -mgeneral-regs-only -c $< -o $@
  47
  48 kernel/kernel.elf: kernel/kernel.bin
  49         $(CC) -ffreestanding -nostdlib -o $@ -T kernel/linker.ld ${KERNEL_OBJ} -Wl,--oformat=elf32-i386
  50         i686-elf-objcopy --only-keep-debug kernel/kernel.elf kernel/kernel.dbg
  51         i686-elf-objcopy --add-gnu-debuglink=kernel/kernel.dbg kernel/kernel.elf
  52         i686-elf-strip --strip-unneeded kernel/kernel.elf
  53
  54 clean:
  55         -rm kernel/kernel.{bin,dbg,elf} ${KERNEL_OBJ}
  56         cd boot/x86 && $(MAKE) clean
  57
  58 .PHONY: default all clean run debug bootloader