X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=Makefile;h=1a2f7341865eb90a822bccce0edae32380f29789;hb=d1e8a437c1fab4535f82c4c214ec3330ac32e48d;hp=d03487663b0f0945c2dd1fff40fe4e359fac05a3;hpb=e5b5905eb3134a409638a5a20462000ef159e1e6;p=bootcensus

diff --git a/Makefile b/Makefile
index d034876..1a2f734 100644
--- a/Makefile
+++ b/Makefile
@@ -6,12 +6,14 @@ elf = test
 bin = test.bin
 
 warn = -pedantic -Wall
+#opt = -O2
 dbg = -g
 inc = -Isrc -Isrc/libc
+gccopt = -fno-pic -ffreestanding -nostdinc -fno-builtin
 
-CFLAGS = $(ccarch) $(warn) $(dbg) -nostdinc -fno-builtin $(inc) $(def)
-ASFLAGS = $(asarch) $(dbg) -nostdinc -fno-builtin $(inc)
-LDFLAGS = $(ldarch) -T pcboot.ld -print-gc-sections
+CFLAGS = $(ccarch) -march=i386 $(warn) $(opt) $(dbg) $(gccopt) $(inc) $(def)
+ASFLAGS = $(asarch) -march=i386 $(dbg) -nostdinc -fno-builtin $(inc)
+LDFLAGS = $(ldarch) -nostdlib -T pcboot.ld -print-gc-sections
 
 
 ifneq ($(shell uname -m), i386)
@@ -20,8 +22,20 @@ ifneq ($(shell uname -m), i386)
 	ldarch = -m elf_i386
 endif
 
+floppy.img: boot.img
+	dd if=/dev/zero of=$@ bs=512 count=2880
+	dd if=$< of=$@ conv=notrunc
+
+boot.img: bootldr.bin $(bin)
+	cat bootldr.bin $(bin) >$@
+
+# bootldr.bin will contain only .boot and .boot2
+bootldr.bin: $(elf)
+	objcopy -O binary -j '.boot*' $< $@
+
+# the main binary will contain every section *except* .boot and .boot2
 $(bin): $(elf)
-	objcopy -O binary $< $@
+	objcopy -O binary -R '.boot*' $< $@
 
 $(elf): $(obj)
 	$(LD) -o $@ $(obj) -Map link.map $(LDFLAGS)
@@ -33,12 +47,31 @@ $(elf): $(obj)
 
 .PHONY: clean
 clean:
-	rm -f $(obj) $(bin)
+	rm -f $(obj) $(bin) boot.img floppy.img link.map
 
 .PHONY: cleandep
 cleandep:
 	rm -f $(dep)
 
+.PHONY: disasm
+disasm: bootldr.disasm $(elf).disasm
+
+bootldr.disasm: $(elf)
+	objdump -d $< -j .boot -j .boot2 -m i8086 >$@
+
+$(elf).disasm: $(elf)
+	objdump -d $< -j .startup -j .text -m i386 >$@
+
+$(elf).sym: $(elf)
+	objcopy --only-keep-debug $< $@
+
 .PHONY: run
 run: $(bin)
-	qemu-system-i386 -fda $(bin)
+	qemu-system-i386 -fda floppy.img -serial file:serial.log
+
+.PHONY: debug
+debug: $(bin) $(elf).sym
+	qemu-system-i386 -fda floppy.img -serial file:serial.log -s -S
+
+.PHONY: sym
+sym: $(elf).sym