Added builder

bootloader/Makefile

@@ -0,0 +1,48 @@
+# Build script for BIOS (legacy) boot.
+#
+# This compiles our bootloader as a static library,
+# and wraps it in a multistage loader.
+
+
+BUILD = ./build
+BIOS_BUILD = $(BUILD)/bios
+
+STAGE2_SECTOR=34
+
+.PHONY: all
+all: $(BIOS_BUILD)/bios.mbr.bin $(BIOS_BUILD)/bios.stage2.bin
+
+.PHONY: clean
+clean:
+	rm -drf $(BUILD)
+
+include bios.mk
+
+# Compile bootloader as library
+LIB_SRC = ./bootloader/Cargo.toml ./bootloader/Cargo.lock $(shell find ./bootloader/src -type f)
+$(BUILD)/bios.lib: $(LIB_SRC)
+	@mkdir -p $(BUILD)
+	env RUSTFLAGS="-C soft-float" \
+	cargo rustc \
+		--manifest-path="./bootloader/Cargo.toml" \
+		-Z build-std=core,alloc \
+		-Z build-std-features=compiler-builtins-mem \
+		--target "./bootloader/targets/x86-unknown-none.json" \
+		--lib \
+		--release \
+		-- \
+		--emit link="$(CURDIR)/$@"
+
+# Link bootloader
+BIOS_LD = ./bootloader/linkers/x86-unknown-none.ld
+$(BUILD)/bios.elf: $(BUILD)/bios.lib $(BIOS_LD)
+	ld \
+		-m elf_i386 \
+		--gc-sections \
+		-z max-page-size=0x1000 \
+		-T "$(BIOS_LD)" \
+		-o "$@" \
+		"$<"
+
+	objcopy --only-keep-debug "$@" "$@.sym"
+	objcopy --strip-debug "$@"