2023-02-10 19:20:17 -06:00
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objects = entry.o kernel.o task.o handler.o interrupt.o v86.o print.o tss.o dosfs/dosfs.o gdt.o\
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usermode.o paging.o fault.o tests.o kbd.o helper.o progs.o disk.o hexedit.o
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CFLAGS = -target "i686-elf" -m32 -mgeneral-regs-only -ffreestanding\
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-march=i686 -fno-stack-protector -Wno-int-conversion -nostdlib -c
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LFLAGS = -Wl,--gc-sections -Wl,--print-gc-sections -m32 -nostartfiles -nostdlib
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ifeq ($(OUTFILE),)
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OUTFILE = virtdisk.bin
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endif
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.PHONY: $(OUTFILE)
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all: $(OUTFILE)
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$(OUTFILE): boot.bin kernel.bin
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# Copy to boot sector, don't overwrite MBR
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dd bs=400 count=1 conv=notrunc if=boot.bin of=$@
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# Write kernel beyond boot sector, maximum 128K (256 sectors)
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dd bs=512 count=256 seek=1 conv=notrunc if=kernel.bin of=$@
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boot.bin: boot.nasm
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nasm -o $@ $<
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kernel.bin: out.o link.ld
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clang $(LFLAGS) -Wl,-M -Tlink.ld -ffreestanding -o $@ $<
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out.o: $(objects)
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clang $(LFLAGS) -e entry -r -o $@ $^
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2022-09-16 15:50:58 -05:00
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%.o: %.nasm
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nasm -f elf32 -o $@ $<
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%.o: %.c
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2023-02-10 19:20:17 -06:00
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clang $(CFLAGS) -ffunction-sections -fdata-sections -Os -o $@ $<
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2022-09-14 16:50:44 -05:00
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virtdisk:
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dd bs=1M count=32 if=/dev/zero of=virtdisk.bin
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echo -n -e '\x55\xaa' | dd bs=1 seek=510 conv=notrunc of=virtdisk.bin
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2022-09-16 15:50:58 -05:00
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2022-09-21 17:14:11 -05:00
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clean:
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2023-02-10 19:20:17 -06:00
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rm -f $(objects) out.o kernel.bin boot.bin
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