Added makefiles

Makefile

@@ -0,0 +1,11 @@
+BUILD_DIR=./build
+
+.PHONY: clean
+
+all: $(BUILD_DIR)/bootloader.bin
+
+include make/bios
+include make/bootloader
+
+clean:
+	rm -drf $(BUILD_DIR)

make/bios

@@ -0,0 +1,12 @@
+BIOS_SRC = ./bios
+STAGE3_BIN = $(BUILD_DIR)/stage3.elf
+
+$(BUILD_DIR)/bootloader.bin: $(wildcard $(BIOS_SRC)/*.asm) $(STAGE3_BIN)
+	@mkdir -p "$(BUILD_DIR)"
+	nasm \
+		-f bin \
+		-o "$@" \
+		-l "$@.lst" \
+		-D STAGE3="$(STAGE3_BIN)" \
+		-i "$(BIOS_SRC)" \
+		"$(BIOS_SRC)/bootloader.asm"

make/bootloader

@@ -0,0 +1,29 @@
+STAGE3_SRC = ./bootloader/Cargo.toml ./bootloader/Cargo.lock $(shell find ./bootloader/src -type f)
+STAGE3_LD = ./bootloader/linkers/x86-unknown-none.ld
+
+# Compile stage 3 bootloader
+$(BUILD_DIR)/stage3.lib.a: $(STAGE3_SRC)
+	@mkdir -p $(BUILD_DIR)
+	env RUSTFLAGS="-C soft-float" \
+	cargo rustc \
+		--manifest-path="./bootloader/Cargo.toml" \
+		-Z build-std=core,alloc \
+		-Z build-std-features=compiler-builtins-mem \
+		--target "./bootloader/targets/x86-unknown-none.json" \
+		--lib \
+		--release \
+		-- \
+		--emit link="$(CURDIR)/$@"
+
+# Link stage 3 bootloader
+$(BUILD_DIR)/stage3.elf: $(BUILD_DIR)/stage3.lib.a $(STAGE3_LD)
+	ld \
+		-m elf_i386 \
+		--gc-sections \
+		-z max-page-size=0x1000 \
+		-T "$(STAGE3_LD)" \
+		-o "$@" \
+		"$<"
+
+	objcopy --only-keep-debug "$@" "$@.sym"
+	objcopy --strip-debug "$@"