90 lines
2.6 KiB
Plaintext
90 lines
2.6 KiB
Plaintext
#
|
|
# Makefile fragment for JOS kernel.
|
|
# This is NOT a complete makefile;
|
|
# you must run GNU make in the top-level directory
|
|
# where the GNUmakefile is located.
|
|
#
|
|
|
|
OBJDIRS += kern
|
|
|
|
KERN_LDFLAGS := $(LDFLAGS) -T kern/kernel.ld -nostdlib
|
|
|
|
# entry.S must be first, so that it's the first code in the text segment!!!
|
|
#
|
|
# We also snatch the use of a couple handy source files
|
|
# from the lib directory, to avoid gratuitous code duplication.
|
|
KERN_SRCFILES := kern/entry.S \
|
|
kern/entrypgdir.c \
|
|
kern/init.c \
|
|
kern/console.c \
|
|
kern/monitor.c \
|
|
kern/pmap.c \
|
|
kern/env.c \
|
|
kern/kclock.c \
|
|
kern/picirq.c \
|
|
kern/printf.c \
|
|
kern/trap.c \
|
|
kern/trapentry.S \
|
|
kern/sched.c \
|
|
kern/syscall.c \
|
|
kern/kdebug.c \
|
|
lib/printfmt.c \
|
|
lib/readline.c \
|
|
lib/string.c
|
|
|
|
# Only build files if they exist.
|
|
KERN_SRCFILES := $(wildcard $(KERN_SRCFILES))
|
|
|
|
# Binary program images to embed within the kernel.
|
|
KERN_BINFILES :=
|
|
|
|
KERN_OBJFILES := $(patsubst %.c, $(OBJDIR)/%.o, $(KERN_SRCFILES))
|
|
KERN_OBJFILES := $(patsubst %.S, $(OBJDIR)/%.o, $(KERN_OBJFILES))
|
|
KERN_OBJFILES := $(patsubst $(OBJDIR)/lib/%, $(OBJDIR)/kern/%, $(KERN_OBJFILES))
|
|
|
|
KERN_BINFILES := $(patsubst %, $(OBJDIR)/%, $(KERN_BINFILES))
|
|
|
|
# How to build kernel object files
|
|
$(OBJDIR)/kern/%.o: kern/%.c $(OBJDIR)/.vars.KERN_CFLAGS
|
|
@echo + cc $<
|
|
@mkdir -p $(@D)
|
|
$(V)$(CC) -nostdinc $(KERN_CFLAGS) -c -o $@ $<
|
|
|
|
$(OBJDIR)/kern/%.o: kern/%.S $(OBJDIR)/.vars.KERN_CFLAGS
|
|
@echo + as $<
|
|
@mkdir -p $(@D)
|
|
$(V)$(CC) -nostdinc $(KERN_CFLAGS) -c -o $@ $<
|
|
|
|
$(OBJDIR)/kern/%.o: lib/%.c $(OBJDIR)/.vars.KERN_CFLAGS
|
|
@echo + cc $<
|
|
@mkdir -p $(@D)
|
|
$(V)$(CC) -nostdinc $(KERN_CFLAGS) -c -o $@ $<
|
|
|
|
# Special flags for kern/init
|
|
$(OBJDIR)/kern/init.o: override KERN_CFLAGS+=$(INIT_CFLAGS)
|
|
$(OBJDIR)/kern/init.o: $(OBJDIR)/.vars.INIT_CFLAGS
|
|
|
|
# How to build the kernel itself
|
|
$(OBJDIR)/kern/kernel: $(KERN_OBJFILES) $(KERN_BINFILES) kern/kernel.ld \
|
|
$(OBJDIR)/.vars.KERN_LDFLAGS
|
|
@echo + ld $@
|
|
$(V)$(LD) -o $@ $(KERN_LDFLAGS) $(KERN_OBJFILES) $(GCC_LIB) -b binary $(KERN_BINFILES)
|
|
$(V)$(OBJDUMP) -S $@ > $@.asm
|
|
$(V)$(NM) -n $@ > $@.sym
|
|
|
|
# How to build the kernel disk image
|
|
$(OBJDIR)/kern/kernel.img: $(OBJDIR)/kern/kernel $(OBJDIR)/boot/boot
|
|
@echo + mk $@
|
|
$(V)dd if=/dev/zero of=$(OBJDIR)/kern/kernel.img~ count=10000 2>/dev/null
|
|
$(V)dd if=$(OBJDIR)/boot/boot of=$(OBJDIR)/kern/kernel.img~ conv=notrunc 2>/dev/null
|
|
$(V)dd if=$(OBJDIR)/kern/kernel of=$(OBJDIR)/kern/kernel.img~ seek=1 conv=notrunc 2>/dev/null
|
|
$(V)mv $(OBJDIR)/kern/kernel.img~ $(OBJDIR)/kern/kernel.img
|
|
|
|
all: $(OBJDIR)/kern/kernel.img
|
|
|
|
grub: $(OBJDIR)/jos-grub
|
|
|
|
$(OBJDIR)/jos-grub: $(OBJDIR)/kern/kernel
|
|
@echo + oc $@
|
|
$(V)$(OBJCOPY) --adjust-vma=0x10000000 $^ $@
|