192d4f04ed
a null pointer - due to optimization breaking.
21 lines
707 B
Makefile
21 lines
707 B
Makefile
objects = entry.o kernel.o handler.o interrupt.o v86.o print.o
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CFLAGS = -target "i686-elf" -m32 -ffreestanding -march=pentium-m -fno-stack-protector -nostdlib -c
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%.o: %.nasm
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nasm -f elf32 -o $@ $<
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%.o: %.c
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clang $(CFLAGS) -O2 $<
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all: $(objects)
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nasm boot.nasm -o boot.bin
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# not sure why but if interrupt.c has any optimization everything just breaks immediately
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gcc -Tlink.ld -m32 -ffreestanding -nostartfiles -nostdlib -o kernel.bin\
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$(objects)
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dd bs=256 count=1 conv=notrunc if=boot.bin of=virtdisk.bin
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dd bs=512 seek=1 conv=notrunc if=kernel.bin of=virtdisk.bin
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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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