Load ELF kernel instead of flat binary

[nameless-os.git] / boot / x86 / Makefile

diff --git a/boot/x86/Makefile b/boot/x86/Makefile
index 015780113b39cf299577587119689da30d821d1c..e75e8dc23573c664b7cbeb8de2ab66ae69720b39 100644 (file)
--- a/boot/x86/Makefile
+++ b/boot/x86/Makefile
@@ -1,4 +1,10 @@
-default: mbr vbr-fat32 stage3/LOADER.BIN
+default: mbr vbr-fat32 stage3/LOADER.BIN stage3/loader.elf
+
+CFLAGS=-g -ffreestanding -Istage3
+LD=i686-elf-gcc
+LDFLAGS=-T stage3/stage3.ld -ffreestanding -nostdlib -g
+
+STAGE3_OBJ=stage3/loader.o stage3/paging.o stage3/elf.o stage3/prekernel.o
 
 mbr: mbr.s
        $(AS) $(ASFLAGS) -w-zeroing -o $@ $<
@@ -6,10 +12,16 @@ mbr: mbr.s
 vbr-fat32: vbr-fat32.s fat32/*.s
        $(AS) $(ASFLAGS) -o $@ $<
 
-stage3/LOADER.BIN: stage3/loader.s stage3/*.s
-       $(AS) $(ASFLAGS) -o $@ $<
+stage3/loader.elf: $(STAGE3_OBJ)
+       $(CC) $(LDFLAGS) -o $@ $^ -lgcc -Wl,--oformat=elf32-i386
+
+stage3/LOADER.BIN: $(STAGE3_OBJ)
+       $(CC) $(LDFLAGS) -o $@ $^ -lgcc
+
+stage3/loader.o: stage3/loader.s stage3/*.s
+       $(AS) $(ASFLAGS) -f elf -g dwarf2 -DGIT_REVISION=\"$(GIT_REV)\" -o $@ $<
 
 clean:
-       -rm mbr vbr-fat32 stage3/LOADER.BIN disk.img
+       -rm mbr vbr-fat32 stage3/LOADER.BIN stage3/loader.elf $(STAGE3_OBJ) disk.img
 
 .PHONY : default clean