X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=Makefile;h=0722ce4d6f5a5cd0ea4dc8c0dd357e5bcc9cc6d0;hb=34ae2440d7cd133051523bce2aac0760cf8296eb;hp=7e0f1b02dd141b81704f24256aa00ec8732af30a;hpb=e552b31989dbb36f780428332be1b4958d26a37b;p=bootcensus

diff --git a/Makefile b/Makefile
index 7e0f1b0..0722ce4 100644
--- a/Makefile
+++ b/Makefile
@@ -9,8 +9,8 @@ warn = -pedantic -Wall
 dbg = -g
 inc = -Isrc -Isrc/libc
 
-CFLAGS = $(ccarch) $(warn) $(dbg) -nostdinc -fno-builtin $(inc) $(def)
-ASFLAGS = $(asarch) $(dbg) -nostdinc -fno-builtin $(inc)
+CFLAGS = $(ccarch) -march=i386 $(warn) $(dbg) -nostdinc -fno-builtin $(inc) $(def)
+ASFLAGS = $(asarch) -march=i386 $(dbg) -nostdinc -fno-builtin $(inc)
 LDFLAGS = $(ldarch) -T pcboot.ld -print-gc-sections
 
 
@@ -20,12 +20,20 @@ ifneq ($(shell uname -m), i386)
 	ldarch = -m elf_i386
 endif
 
-floppy.img: $(bin)
+floppy.img: boot.img
 	dd if=/dev/zero of=$@ 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)
@@ -37,12 +45,21 @@ $(elf): $(obj)
 
 .PHONY: clean
 clean:
-	rm -f $(obj) $(bin) floppy.img
+	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 $< -j .startup -j .text -m i386 >$@
+
 .PHONY: run
 run: $(bin)
 	qemu-system-i386 -fda floppy.img -serial file:serial.log