22 lines
875 B
Makefile
22 lines
875 B
Makefile
QEMU := qemu-system-x86_64
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ARCH_TEMP_FILES := $(BUILDDIR)/$(KERNEL_EXEC).elf32
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# qemu refuses to boot ELF64 binaries. this creates a patched version of the kernel
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# binary to trick qemu into thinking its an ELF32.
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# this has no effect on the kernel itself; the x86_64 kernel's
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# entry point is 32-bit machine code.
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$(BUILDDIR)/$(KERNEL_EXEC).elf32: $(BUILDDIR)/$(KERNEL_EXEC)
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@cp $(BUILDDIR)/$(KERNEL_EXEC) $(BUILDDIR)/$(KERNEL_EXEC).elf32
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@printf '\x03\x00' | dd of=$(BUILDDIR)/$(KERNEL_EXEC).elf32 bs=1 seek=18 count=2 conv=notrunc 2> /dev/null
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run: $(BUILDDIR)/$(KERNEL_EXEC) $(BUILDDIR)/$(KERNEL_EXEC).elf32
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@echo " \033[1;93mBOOT\033[0m $<"
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@$(QEMU) -kernel $(BUILDDIR)/$(KERNEL_EXEC).elf32
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debug: $(BUILDDIR)/$(KERNEL_EXEC) $(BUILDDIR)/$(KERNEL_EXEC).elf32
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@echo " \033[1;93mBOOT\033[0m $<"
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@$(QEMU) -kernel $(BUILDDIR)/$(KERNEL_EXEC).elf32 -S -s
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