Makefile

   1 OBJS = \
   2         bio.o\
   3         console.o\
   4         exec.o\
   5         file.o\
   6         fs.o\
   7         ide.o\
   8         ioapic.o\
   9         kalloc.o\
  10         kbd.o\
  11         lapic.o\
  12         main.o\
  13         mp.o\
  14         picirq.o\
  15         pipe.o\
  16         proc.o\
  17         spinlock.o\
  18         string.o\
  19         swtch.o\
  20         syscall.o\
  21         sysfile.o\
  22         sysproc.o\
  23         timer.o\
  24         trapasm.o\
  25         trap.o\
  26         uart.o\
  27         vectors.o\
  28         vm.o\
  29
  30 # Cross-compiling (e.g., on Mac OS X)
  31 #TOOLPREFIX = i386-jos-elf-
  32
  33 # Using native tools (e.g., on X86 Linux)
  34 #TOOLPREFIX =
  35
  36 # Try to infer the correct TOOLPREFIX if not set
  37 ifndef TOOLPREFIX
  38 TOOLPREFIX := $(shell if i386-jos-elf-objdump -i 2>&1 | grep '^elf32-i386$$' >/dev/null 2>&1; \
  39         then echo 'i386-jos-elf-'; \
  40         elif objdump -i 2>&1 | grep 'elf32-i386' >/dev/null 2>&1; \
  41         then echo ''; \
  42         else echo "***" 1>&2; \
  43         echo "*** Error: Couldn't find an i386-*-elf version of GCC/binutils." 1>&2; \
  44         echo "*** Is the directory with i386-jos-elf-gcc in your PATH?" 1>&2; \
  45         echo "*** If your i386-*-elf toolchain is installed with a command" 1>&2; \
  46         echo "*** prefix other than 'i386-jos-elf-', set your TOOLPREFIX" 1>&2; \
  47         echo "*** environment variable to that prefix and run 'make' again." 1>&2; \
  48         echo "*** To turn off this error, run 'gmake TOOLPREFIX= ...'." 1>&2; \
  49         echo "***" 1>&2; exit 1; fi)
  50 endif
  51
  52 # If the makefile can't find QEMU, specify its path here
  53 #QEMU =
  54
  55 # Try to infer the correct QEMU
  56 ifndef QEMU
  57 QEMU = $(shell if which qemu > /dev/null; \
  58         then echo qemu; exit; \
  59         else \
  60         qemu=/Applications/Q.app/Contents/MacOS/i386-softmmu.app/Contents/MacOS/i386-softmmu; \
  61         if test -x $$qemu; then echo $$qemu; exit; fi; fi; \
  62         echo "***" 1>&2; \
  63         echo "*** Error: Couldn't find a working QEMU executable." 1>&2; \
  64         echo "*** Is the directory containing the qemu binary in your PATH" 1>&2; \
  65         echo "*** or have you tried setting the QEMU variable in Makefile?" 1>&2; \
  66         echo "***" 1>&2; exit 1)
  67 endif
  68
  69 CC = $(TOOLPREFIX)gcc
  70 AS = $(TOOLPREFIX)gas
  71 LD = $(TOOLPREFIX)ld
  72 OBJCOPY = $(TOOLPREFIX)objcopy
  73 OBJDUMP = $(TOOLPREFIX)objdump
  74 CFLAGS = -fno-pic -static -fno-builtin -fno-strict-aliasing -O2 -Wall -MD -ggdb -m32 -Werror
  75 CFLAGS += $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
  76 ASFLAGS = -m32 -gdwarf-2
  77 # FreeBSD ld wants ``elf_i386_fbsd''
  78 LDFLAGS += -m $(shell $(LD) -V | grep elf_i386 2>/dev/null)
  79
  80 xv6.img: bootblock kernel fs.img
  81         dd if=/dev/zero of=xv6.img count=10000
  82         dd if=bootblock of=xv6.img conv=notrunc
  83         dd if=kernel of=xv6.img seek=1 conv=notrunc
  84
  85 xv6memfs.img: bootblock kernelmemfs
  86         dd if=/dev/zero of=xv6memfs.img count=10000
  87         dd if=bootblock of=xv6memfs.img conv=notrunc
  88         dd if=kernelmemfs of=xv6memfs.img seek=1 conv=notrunc
  89
  90 bootblock: bootasm.S bootmain.c
  91         $(CC) $(CFLAGS) -fno-pic -O -nostdinc -I. -c bootmain.c
  92         $(CC) $(CFLAGS) -fno-pic -nostdinc -I. -c bootasm.S
  93         $(LD) $(LDFLAGS) -N -e start -Ttext 0x7C00 -o bootblock.o bootasm.o bootmain.o
  94         $(OBJDUMP) -S bootblock.o > bootblock.asm
  95         $(OBJCOPY) -S -O binary -j .text bootblock.o bootblock
  96         ./sign.pl bootblock
  97
  98 bootother: bootother.S
  99         $(CC) $(CFLAGS) -nostdinc -I. -c bootother.S
 100         $(LD) $(LDFLAGS) -N -e start -Ttext 0x7000 -o bootother.out bootother.o
 101         $(OBJCOPY) -S -O binary bootother.out bootother
 102         $(OBJDUMP) -S bootother.o > bootother.asm
 103
 104 initcode: initcode.S
 105         $(CC) $(CFLAGS) -nostdinc -I. -c initcode.S
 106         $(LD) $(LDFLAGS) -N -e start -Ttext 0 -o initcode.out initcode.o
 107         $(OBJCOPY) -S -O binary initcode.out initcode
 108         $(OBJDUMP) -S initcode.o > initcode.asm
 109
 110 kernel: $(OBJS) multiboot.o data.o bootother initcode
 111         $(LD) $(LDFLAGS) -Ttext 0x100000 -e main -o kernel multiboot.o data.o $(OBJS) -b binary initcode bootother
 112         $(OBJDUMP) -S kernel > kernel.asm
 113         $(OBJDUMP) -t kernel | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > kernel.sym
 114
 115 # kernelmemfs is a copy of kernel that maintains the
 116 # disk image in memory instead of writing to a disk.
 117 # This is not so useful for testing persistent storage or
 118 # exploring disk buffering implementations, but it is
 119 # great for testing the kernel on real hardware without
 120 # needing a scratch disk.
 121 MEMFSOBJS = $(filter-out ide.o,$(OBJS)) memide.o
 122 kernelmemfs: $(MEMFSOBJS) multiboot.o data.o bootother initcode fs.img
 123         $(LD) $(LDFLAGS) -Ttext 0x100000 -e main -o kernelmemfs multiboot.o data.o $(MEMFSOBJS) -b binary initcode bootother fs.img
 124         $(OBJDUMP) -S kernelmemfs > kernelmemfs.asm
 125         $(OBJDUMP) -t kernelmemfs | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > kernelmemfs.sym
 126
 127 tags: $(OBJS) bootother.S _init
 128         etags *.S *.c
 129
 130 vectors.S: vectors.pl
 131         perl vectors.pl > vectors.S
 132
 133 ULIB = ulib.o usys.o printf.o umalloc.o
 134
 135 _%: %.o $(ULIB)
 136         $(LD) $(LDFLAGS) -N -e main -Ttext 0 -o $@ $^
 137         $(OBJDUMP) -S $@ > $*.asm
 138         $(OBJDUMP) -t $@ | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > $*.sym
 139
 140 _forktest: forktest.o $(ULIB)
 141         # forktest has less library code linked in - needs to be small
 142         # in order to be able to max out the proc table.
 143         $(LD) $(LDFLAGS) -N -e main -Ttext 0 -o _forktest forktest.o ulib.o usys.o
 144         $(OBJDUMP) -S _forktest > forktest.asm
 145
 146 mkfs: mkfs.c fs.h
 147         gcc -m32 -Werror -Wall -o mkfs mkfs.c
 148
 149 UPROGS=\
 150         _cat\
 151         _echo\
 152         _forktest\
 153         _grep\
 154         _init\
 155         _kill\
 156         _ln\
 157         _ls\
 158         _mkdir\
 159         _rm\
 160         _sh\
 161         _stressfs\
 162         _usertests\
 163         _wc\
 164         _zombie\
 165
 166 fs.img: mkfs README $(UPROGS)
 167         ./mkfs fs.img README $(UPROGS)
 168
 169 -include *.d
 170
 171 clean:
 172         rm -f *.tex *.dvi *.idx *.aux *.log *.ind *.ilg \
 173         *.o *.d *.asm *.sym vectors.S parport.out \
 174         bootblock kernel xv6.img fs.img mkfs \
 175         $(UPROGS)
 176
 177 # make a printout
 178 FILES = $(shell grep -v '^\#' runoff.list)
 179 PRINT = runoff.list runoff.spec $(FILES)
 180
 181 xv6.pdf: $(PRINT)
 182         ./runoff
 183         ls -l xv6.pdf
 184
 185 print: xv6.pdf
 186
 187 # run in emulators
 188
 189 bochs : fs.img xv6.img
 190         if [ ! -e .bochsrc ]; then ln -s dot-bochsrc .bochsrc; fi
 191         bochs -q
 192
 193 # try to generate a unique GDB port
 194 GDBPORT = $(shell expr `id -u` % 5000 + 25000)
 195 # QEMU's gdb stub command line changed in 0.11
 196 QEMUGDB = $(shell if $(QEMU) -help | grep -q '^-gdb'; \
 197         then echo "-gdb tcp::$(GDBPORT)"; \
 198         else echo "-s -p $(GDBPORT)"; fi)
 199 ifndef CPUS
 200 CPUS := 2
 201 endif
 202 QEMUOPTS = -hdb fs.img xv6.img -smp $(CPUS)
 203
 204 qemu: fs.img xv6.img
 205         $(QEMU) -serial mon:stdio $(QEMUOPTS)
 206
 207 qemu-memfs: xv6memfs.img
 208         $(QEMU) xv6memfs.img -smp $(CPUS)
 209
 210 qemu-nox: fs.img xv6.img
 211         $(QEMU) -nographic $(QEMUOPTS)
 212
 213 .gdbinit: .gdbinit.tmpl
 214         sed "s/localhost:1234/localhost:$(GDBPORT)/" < $^ > $@
 215
 216 qemu-gdb: fs.img xv6.img .gdbinit
 217         @echo "*** Now run 'gdb'." 1>&2
 218         $(QEMU) -serial mon:stdio $(QEMUOPTS) -S $(QEMUGDB)
 219
 220 qemu-nox-gdb: fs.img xv6.img .gdbinit
 221         @echo "*** Now run 'gdb'." 1>&2
 222         $(QEMU) -nographic $(QEMUOPTS) -S $(QEMUGDB)
 223