-csrc = $(wildcard src/*.c) $(wildcard src/libc/*.c)
-ssrc = $(wildcard src/*.s) $(wildcard src/libc/*.s) $(wildcard src/boot/*.s)
-obj = $(csrc:.c=.o) $(ssrc:.s=.o)
+csrc = $(wildcard src/*.c) $(wildcard src/libc/*.c) $(wildcard src/census/*.c)
+ssrc = $(wildcard src/*.s) $(wildcard src/libc/*.s) $(wildcard src/boot/*.s) $(wildcard src/census/*.s)
+Ssrc = $(wildcard src/*.S)
+obj = $(csrc:.c=.o) $(ssrc:.s=.o) $(Ssrc:.S=.o)
dep = $(obj:.o=.d)
-elf = test
-bin = test.bin
+elf = bcensus
+bin = bcensus.bin
warn = -pedantic -Wall
+#opt = -O2
dbg = -g
inc = -Isrc -Isrc/libc
+gccopt = -fno-pic -ffreestanding -nostdinc -fno-builtin -ffast-math
-CFLAGS = $(ccarch) -march=i386 $(warn) $(dbg) -nostdinc -fno-builtin $(inc) $(def)
+CFLAGS = $(ccarch) -march=i386 $(warn) $(opt) $(dbg) $(gccopt) $(inc) $(def)
ASFLAGS = $(asarch) -march=i386 $(dbg) -nostdinc -fno-builtin $(inc)
-LDFLAGS = $(ldarch) -T pcboot.ld -print-gc-sections
+LDFLAGS = $(ldarch) -nostdlib -T pcboot.ld -print-gc-sections
+#QEMU_FLAGS = -fda floppy.img -serial file:serial.log -soundhw sb16
+QEMU_FLAGS = -hda disk.img -serial file:serial.log -soundhw sb16
ifneq ($(shell uname -m), i386)
ccarch = -m32
ldarch = -m elf_i386
endif
-floppy.img: $(bin)
+.PHONY: all
+all: disk.img #floppy.img
+
+disk.img: boot.img blank.img
+ @echo
+ @echo - patching pcboot onto the blank disk image ...
+ cp blank.img $@
+ dd if=boot.img of=$@ bs=512 status=none conv=notrunc
+ dd if=blank.img of=$@ bs=1 seek=440 skip=440 count=70 status=none conv=notrunc
+
+blank.img:
+ @echo
+ @echo - generating blank disk image with FAT partition ...
+ dd if=/dev/zero of=part.img bs=1024 count=63488
+ mkfs -t vfat -n PCBOOT part.img
+ dd if=/dev/zero of=$@ bs=1024 count=65536
+ echo start=2048 type=c | sfdisk $@
+ dd if=part.img of=$@ bs=512 seek=2048 conv=notrunc
+ rm part.img
+
+floppy.img: boot.img
dd if=/dev/zero of=$@ bs=512 count=2880
dd if=$< of=$@ conv=notrunc
+pcboot.iso: floppy.img
+ rm -rf cdrom
+ git archive --format=tar --prefix=cdrom/ HEAD | tar xf -
+ cp $< cdrom
+ mkisofs -o $@ -R -J -V pcboot -b $< cdrom
+
+
+boot.img: bootldr.bin $(bin)
+ cat bootldr.bin $(bin) >$@
+
+# bootldr.bin will contain .boot, .boot2, .bootend, and .lowtext
+bootldr.bin: $(elf)
+ objcopy -O binary -j '.boot*' -j .lowtext $< $@
+
+# the main binary will contain every section *except* those
$(bin): $(elf)
- objcopy -O binary $< $@
+ objcopy -O binary -R '.boot*' -R .lowtext $< $@
$(elf): $(obj)
$(LD) -o $@ $(obj) -Map link.map $(LDFLAGS)
+%.o: %.S
+ $(CC) -o $@ $(CFLAGS) -c $<
+
-include $(dep)
%.d: %.c
.PHONY: clean
clean:
- rm -f $(obj) $(bin) floppy.img
+ rm -f $(obj) $(bin) boot.img floppy.img disk.img link.map
.PHONY: cleandep
cleandep:
rm -f $(dep)
+.PHONY: disasm
+disasm: bootldr.disasm $(elf).disasm
+
+bootldr.disasm: $(elf)
+ objdump -d $< -j .boot -j .boot2 -j .lowtext -m i8086 >$@
+
+$(elf).disasm: $(elf)
+ objdump -d $< -j .startup -j .text -j .lowtext -m i386 >$@
+
+$(elf).sym: $(elf)
+ objcopy --only-keep-debug $< $@
+
.PHONY: run
run: $(bin)
- qemu-system-i386 -fda floppy.img -serial file:serial.log
+ qemu-system-i386 $(QEMU_FLAGS)
+
+.PHONY: debug
+debug: $(bin) $(elf).sym
+ qemu-system-i386 $(QEMU_FLAGS) -s -S
+
+.PHONY: sym
+sym: $(elf).sym
+
+.PHONY: mount
+mount: disk.img
+ mount -o loop,offset=1048576 $< /mnt
+
+.PHONY: data
+data: blank.img
+ mcopy -D o -i $<@@1M data/* ::.data
+ $(MAKE)