kern/Makefrag

   1 #
   2 # Makefile fragment for JOS kernel.
   3 # This is NOT a complete makefile;
   4 # you must run GNU make in the top-level directory
   5 # where the GNUmakefile is located.
   6 #
   7
   8 OBJDIRS += kern
   9
  10 KERN_LDFLAGS := $(LDFLAGS) -T kern/kernel.ld -nostdlib
  11
  12 # entry.S must be first, so that it's the first code in the text segment!!!
  13 #
  14 # We also snatch the use of a couple handy source files
  15 # from the lib directory, to avoid gratuitous code duplication.
  16 KERN_SRCFILES :=        kern/entry.S \
  17                         kern/init.c \
  18                         kern/console.c \
  19                         kern/monitor.c \
  20                         kern/pmap.c \
  21                         kern/env.c \
  22                         kern/kclock.c \
  23                         kern/picirq.c \
  24                         kern/printf.c \
  25                         kern/trap.c \
  26                         kern/trapentry.S \
  27                         kern/sched.c \
  28                         kern/syscall.c \
  29                         kern/kdebug.c \
  30                         lib/printfmt.c \
  31                         lib/readline.c \
  32                         lib/string.c
  33
  34 # Only build files if they exist.
  35 KERN_SRCFILES := $(wildcard $(KERN_SRCFILES))
  36
  37 # Binary program images to embed within the kernel.
  38 KERN_BINFILES :=        user/idle \
  39                         user/yield \
  40                         user/dumbfork \
  41                         user/faultread \
  42                         user/faultwrite \
  43                         user/faultdie \
  44                         user/faultalloc \
  45                         user/faultallocbad \
  46                         user/faultnostack \
  47                         user/faultbadhandler \
  48                         user/faultevilhandler \
  49                         user/forktree \
  50                         user/spin \
  51                         user/fairness \
  52                         user/pingpong \
  53                         user/pingpongs \
  54                         user/primes \
  55                         user/hello
  56
  57 KERN_OBJFILES := $(patsubst %.c, $(OBJDIR)/%.o, $(KERN_SRCFILES))
  58 KERN_OBJFILES := $(patsubst %.S, $(OBJDIR)/%.o, $(KERN_OBJFILES))
  59 KERN_OBJFILES := $(patsubst $(OBJDIR)/lib/%, $(OBJDIR)/kern/%, $(KERN_OBJFILES))
  60
  61 KERN_BINFILES := $(patsubst %, $(OBJDIR)/%, $(KERN_BINFILES))
  62
  63 # How to build kernel object files
  64 $(OBJDIR)/kern/%.o: kern/%.c
  65         @echo + cc $<
  66         @mkdir -p $(@D)
  67         $(V)$(CC) -nostdinc $(KERN_CFLAGS) -c -o $@ $<
  68
  69 $(OBJDIR)/kern/%.o: kern/%.S
  70         @echo + as $<
  71         @mkdir -p $(@D)
  72         $(V)$(CC) -nostdinc $(KERN_CFLAGS) -c -o $@ $<
  73
  74 $(OBJDIR)/kern/%.o: lib/%.c
  75         @echo + cc $<
  76         @mkdir -p $(@D)
  77         $(V)$(CC) -nostdinc $(KERN_CFLAGS) -c -o $@ $<
  78
  79 # How to build the kernel itself
  80 $(OBJDIR)/kern/kernel: $(KERN_OBJFILES) $(KERN_BINFILES) kern/kernel.ld
  81         @echo + ld $@
  82         $(V)$(LD) -o $@ $(KERN_LDFLAGS) $(KERN_OBJFILES) $(GCC_LIB) -b binary $(KERN_BINFILES)
  83         $(V)$(OBJDUMP) -S $@ > $@.asm
  84         $(V)$(NM) -n $@ > $@.sym
  85
  86 # How to build the Bochs disk image
  87 $(OBJDIR)/kern/bochs.img: $(OBJDIR)/kern/kernel $(OBJDIR)/boot/boot
  88         @echo + mk $@
  89         $(V)dd if=/dev/zero of=$(OBJDIR)/kern/bochs.img~ count=10000 2>/dev/null
  90         $(V)dd if=$(OBJDIR)/boot/boot of=$(OBJDIR)/kern/bochs.img~ conv=notrunc 2>/dev/null
  91         $(V)dd if=$(OBJDIR)/kern/kernel of=$(OBJDIR)/kern/bochs.img~ seek=1 conv=notrunc 2>/dev/null
  92         $(V)mv $(OBJDIR)/kern/bochs.img~ $(OBJDIR)/kern/bochs.img
  93
  94 all: $(OBJDIR)/kern/bochs.img
  95
  96 grub: $(OBJDIR)/jos-grub
  97
  98 $(OBJDIR)/jos-grub: $(OBJDIR)/kern/kernel
  99         @echo + oc $@
 100         $(V)$(OBJCOPY) --adjust-vma=0x10000000 $^ $@