+.PHONY: qemu
+qemu: out/main out/startup.nsh OVMF_CODE.fd OVMF_VARS.fd
+ # Based on https://wiki.osdev.org/UEFI#Emulation_with_QEMU_and_OVMF
+ qemu-system-x86_64 -cpu qemu64 \
+ -drive if=pflash,format=raw,unit=0,file=OVMF_CODE.fd,readonly=on \
+ -drive if=pflash,format=raw,unit=1,file=OVMF_VARS.fd \
+ -net none \
+ -drive format=raw,file=fat:rw:out \
+ -display type=gtk,zoom-to-fit=on
+
+# Assuming 'ovmf' package on Arch Linux is installed.
+OVMF_CODE.fd: /usr/share/ovmf/x64/OVMF_CODE.fd
+ cp $< $@
+OVMF_VARS.fd: /usr/share/ovmf/x64/OVMF_VARS.fd
+ cp $< $@
+
+out/main: main.asm impl.asm bootstrap.asm sys.f os/uefi.asm
+ mkdir -p out
+ OS_INCLUDE=os/uefi.asm fasm $< $@
+
+out/startup.nsh:
+ mkdir -p out
+ echo 'fs0:main' >out/startup.nsh