QEMU := qemu-system-x86_64
QEMU_FLAGS := -m 10M -smp 4 -cpu qemu64,pdpe1gb

ARCH_TEMP_FILES := $(BUILD_DIR)/$(KERNEL_EXEC).elf32

# qemu refuses to boot ELF64 binaries. this creates a patched version of the kernel
# binary to trick qemu into thinking its an ELF32.
# this has no effect on the kernel itself; the x86_64 kernel's
# entry point is 32-bit machine code.
$(BUILD_DIR)/$(KERNEL_EXEC).elf32: $(BUILD_DIR)/$(KERNEL_EXEC)
	@cp $(BUILD_DIR)/$(KERNEL_EXEC) $(BUILD_DIR)/$(KERNEL_EXEC).elf32
	$(BUILD_DIR)/tools/e64patch/e64patch $(BUILD_DIR)/$(KERNEL_EXEC).elf32

$(BUILD_DIR)/socks-kernel.iso: $(BUILD_DIR)/$(KERNEL_EXEC)
	@$(BUILD_DIR)/../tools/socks.mkrescue

run: $(BUILD_DIR)/$(KERNEL_EXEC) $(BUILD_DIR)/$(KERNEL_EXEC).elf32
	@printf "    \033[1;93mQEMU\033[0m   $<\n"

	@$(QEMU) -kernel $(BUILD_DIR)/$(KERNEL_EXEC).elf32 -monitor stdio $(QEMU_FLAGS) -serial file:$(BUILD_DIR)/socks.log

run-curses: $(BUILD_DIR)/$(KERNEL_EXEC) $(BUILD_DIR)/$(KERNEL_EXEC).elf32
	@printf "    \033[1;93mQEMU\033[0m   $<\n"

	@$(QEMU) -kernel $(BUILD_DIR)/$(KERNEL_EXEC).elf32 -monitor stdio $(QEMU_FLAGS) -display curses -serial file:$(BUILD_DIR)/socks.log

run-cd-curses: $(BUILD_DIR)/socks-kernel.iso
	@printf "    \033[1;93mQEMU\033[0m   $<\n"

	@$(QEMU) -cdrom $(BUILD_DIR)/socks-kernel.iso  $(QEMU_FLAGS) -display curses -serial file:$(BUILD_DIR)/socks.log

debug: $(BUILD_DIR)/$(KERNEL_EXEC) $(BUILD_DIR)/$(KERNEL_EXEC).elf32
	@./tools/kernel-debug/debug_session.sh \
		tools/kernel-debug/gdb_session_init \
		tools/kernel-debug/lldb_session_init \
		$(QEMU) \
			-kernel $(BUILD_DIR)/$(KERNEL_EXEC).elf32 -S -s \
			-monitor stdio -serial file:$(BUILD_DIR)/socks.log $(QEMU_FLAGS)


debug-curses: $(BUILD_DIR)/$(KERNEL_EXEC) $(BUILD_DIR)/$(KERNEL_EXEC).elf32
	@./tools/kernel-debug/debug_session.sh \
		tools/kernel-debug/gdb_session_init \
		tools/kernel-debug/lldb_session_init \
		$(QEMU) \
			-kernel $(BUILD_DIR)/$(KERNEL_EXEC).elf32 -S -s \
			-display curses -serial file:$(BUILD_DIR)/socks.log $(QEMU_FLAGS) > build/qemu.log

debug-cd-curses: $(BUILD_DIR)/socks-kernel.iso
	@./tools/kernel-debug/debug_session.sh \
		tools/kernel-debug/gdb_session_init \
		tools/kernel-debug/lldb_session_init \
		$(QEMU) \
			-cdrom $(BUILD_DIR)/socks-kernel.iso -S -s \
			-display curses -serial file:$(BUILD_DIR)/socks.log $(QEMU_FLAGS) > build/qemu.log