From 14845124cf5d4fb42a04cb1262b32bd3d00f45f8 Mon Sep 17 00:00:00 2001
From: Johannes Stoelp <johannes.stoelp@gmail.com>
Date: Mon, 23 Dec 2024 22:51:52 +0100
Subject: mbr: rm->pm, then jump into zig

---
 x86-bare-metal/mbr-palette/Makefile | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 x86-bare-metal/mbr-palette/Makefile

(limited to 'x86-bare-metal/mbr-palette/Makefile')

diff --git a/x86-bare-metal/mbr-palette/Makefile b/x86-bare-metal/mbr-palette/Makefile
new file mode 100644
index 0000000..7642791
--- /dev/null
+++ b/x86-bare-metal/mbr-palette/Makefile
@@ -0,0 +1,28 @@
+O := BUILD
+
+$(O)/boot: $(O)/boot.elf | dump_info
+	objcopy -O binary $< $@
+
+$(O)/boot.elf: mbr.ld $(O)/mbr.o $(O)/zmbr.o
+	ld -o $@ -nostdlib -T $^
+
+$(O)/mbr.o: mbr.S | $(O)
+	gcc -m32 -c -o $@ -ffreestanding mbr.S
+
+$(O)/zmbr.o: zmbr.zig | $(O)
+	zig build-obj -femit-bin=$@ -target x86-freestanding-none -O ReleaseSmall $<
+
+clean:
+	$(RM) -r $(O)
+
+$(O):
+	mkdir -p $(O)
+
+dump_info: $(O)/boot.elf
+	objdump -Mintel --disassemble=kmain --visualize-jumps=extended-color $<
+	readelf -W -l $<
+	size $<
+	size $< | awk '/$(notdir $<)/ { print "MBR utilization " $$1/512 "%" }'
+
+run: $(O)/boot
+	qemu-system-i386 -hda $< $(QEMU_ARGS)
-- 
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