32 lines
963 B
Makefile
32 lines
963 B
Makefile
all: boot.img kernel.bin
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src/%.o: src/%.c
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bcc -ansi -0 -c -o $@ $<
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kernel.bin: src/screen.o src/conio.o src/string.o src/stdlib.o src/basic.o src/kernel.o
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ld86 -d -M -o $@ $^ | tee ld86.out
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asm/kernel_syms.S: kernel.bin
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cat ld86.out | \
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grep -E "^\s+kernel\s+[a-zA-Z0-9_]+ 0 [0-9]+" | \
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python -c "import sys; print '\n'.join([\"_extern_c%s:\n jmp 0x1000:0x%04x\" % (x.lstrip(' ').replace('kernel', '').lstrip(' ').split(' ')[0], int(x.lstrip(' ').replace('kernel', '').lstrip(' ').split(' ')[4], 16)) for x in sys.stdin.readlines()])" > asm/kernel_syms.S
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boot.bin: asm/kernel_syms.S asm/bootloader.S asm/bootloader.S
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cd asm && nasm bootloader.S -f bin -o ../$@
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asm/%.o: asm/%.S
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nasm $< -f as86 -o $@
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boot.img: boot.bin kernel.bin
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dd if=/dev/zero of=boot.img ibs=1k count=1440
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cat $^ > boot.tmp
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dd if=boot.tmp of=boot.img conv=notrunc
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rm -f boot.tmp
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test: boot.img
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bochs -f bochsrc -q
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.PHONY: clean
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clean:
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rm -f boot.bin asm/*o src/*o
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