1OBJS = \ 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 log.o\ 13 main.o\ 14 mp.o\ 15 picirq.o\ 16 pipe.o\ 17 proc.o\ 18 spinlock.o\ 19 string.o\ 20 swtch.o\ 21 syscall.o\ 22 sysfile.o\ 23 sysproc.o\ 24 timer.o\ 25 trapasm.o\ 26 trap.o\ 27 uart.o\ 28 vectors.o\ 29 vm.o\ 30 31# Cross-compiling (e.g., on Mac OS X) 32# TOOLPREFIX = i386-jos-elf 33 34# Using native tools (e.g., on X86 Linux) 35#TOOLPREFIX = 36 37# Try to infer the correct TOOLPREFIX if not set 38ifndef TOOLPREFIX 39TOOLPREFIX := $(shell if i386-jos-elf-objdump -i 2>&1 | grep '^elf32-i386$$' >/dev/null 2>&1; \ 40 then echo 'i386-jos-elf-'; \ 41 elif objdump -i 2>&1 | grep 'elf32-i386' >/dev/null 2>&1; \ 42 then echo ''; \ 43 else echo "***" 1>&2; \ 44 echo "*** Error: Couldn't find an i386-*-elf version of GCC/binutils." 1>&2; \ 45 echo "*** Is the directory with i386-jos-elf-gcc in your PATH?" 1>&2; \ 46 echo "*** If your i386-*-elf toolchain is installed with a command" 1>&2; \ 47 echo "*** prefix other than 'i386-jos-elf-', set your TOOLPREFIX" 1>&2; \ 48 echo "*** environment variable to that prefix and run 'make' again." 1>&2; \ 49 echo "*** To turn off this error, run 'gmake TOOLPREFIX= ...'." 1>&2; \ 50 echo "***" 1>&2; exit 1; fi) 51endif 52 53# If the makefile can't find QEMU, specify its path here 54# QEMU = qemu-system-i386 55 56# Try to infer the correct QEMU 57ifndef QEMU 58QEMU = $(shell if which qemu > /dev/null; \ 59 then echo qemu; exit; \ 60 elif which qemu-system-i386 > /dev/null; \ 61 then echo qemu-system-i386; exit; \ 62 else \ 63 qemu=/Applications/Q.app/Contents/MacOS/i386-softmmu.app/Contents/MacOS/i386-softmmu; \ 64 if test -x $$qemu; then echo $$qemu; exit; fi; fi; \ 65 echo "***" 1>&2; \ 66 echo "*** Error: Couldn't find a working QEMU executable." 1>&2; \ 67 echo "*** Is the directory containing the qemu binary in your PATH" 1>&2; \ 68 echo "*** or have you tried setting the QEMU variable in Makefile?" 1>&2; \ 69 echo "***" 1>&2; exit 1) 70endif 71 72CC = $(TOOLPREFIX)gcc 73AS = $(TOOLPREFIX)gas 74LD = $(TOOLPREFIX)ld 75OBJCOPY = $(TOOLPREFIX)objcopy 76OBJDUMP = $(TOOLPREFIX)objdump 77#CFLAGS = -fno-pic -static -fno-builtin -fno-strict-aliasing -O2 -Wall -MD -ggdb -m32 -Werror -fno-omit-frame-pointer 78CFLAGS = -fno-pic -static -fno-builtin -fno-strict-aliasing -fvar-tracking -fvar-tracking-assignments -O0 -g -Wall -MD -gdwarf-2 -m32 -Werror -fno-omit-frame-pointer 79CFLAGS += $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector) 80ASFLAGS = -m32 -gdwarf-2 -Wa,-divide 81# FreeBSD ld wants ``elf_i386_fbsd'' 82LDFLAGS += -m $(shell $(LD) -V | grep elf_i386 2>/dev/null) 83 84xv6.img: bootblock kernel fs.img 85 dd if=/dev/zero of=xv6.img count=10000 86 dd if=bootblock of=xv6.img conv=notrunc 87 dd if=kernel of=xv6.img seek=1 conv=notrunc 88 89xv6memfs.img: bootblock kernelmemfs 90 dd if=/dev/zero of=xv6memfs.img count=10000 91 dd if=bootblock of=xv6memfs.img conv=notrunc 92 dd if=kernelmemfs of=xv6memfs.img seek=1 conv=notrunc 93 94bootblock: bootasm.S bootmain.c 95 $(CC) $(CFLAGS) -fno-pic -O -nostdinc -I. -c bootmain.c 96 $(CC) $(CFLAGS) -fno-pic -nostdinc -I. -c bootasm.S 97 $(LD) $(LDFLAGS) -N -e start -Ttext 0x7C00 -o bootblock.o bootasm.o bootmain.o 98 $(OBJDUMP) -S bootblock.o > bootblock.asm 99 $(OBJCOPY) -S -O binary -j .text bootblock.o bootblock 100 ./sign.pl bootblock 101 102entryother: entryother.S 103 $(CC) $(CFLAGS) -fno-pic -nostdinc -I. -c entryother.S 104 $(LD) $(LDFLAGS) -N -e start -Ttext 0x7000 -o bootblockother.o entryother.o 105 $(OBJCOPY) -S -O binary -j .text bootblockother.o entryother 106 $(OBJDUMP) -S bootblockother.o > entryother.asm 107 108initcode: initcode.S 109 $(CC) $(CFLAGS) -nostdinc -I. -c initcode.S 110 $(LD) $(LDFLAGS) -N -e start -Ttext 0 -o initcode.out initcode.o 111 $(OBJCOPY) -S -O binary initcode.out initcode 112 $(OBJDUMP) -S initcode.o > initcode.asm 113 114kernel: $(OBJS) entry.o entryother initcode kernel.ld 115 $(LD) $(LDFLAGS) -T kernel.ld -o kernel entry.o $(OBJS) -b binary initcode entryother 116 $(OBJDUMP) -S kernel > kernel.asm 117 $(OBJDUMP) -t kernel | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > kernel.sym 118 119# kernelmemfs is a copy of kernel that maintains the 120# disk image in memory instead of writing to a disk. 121# This is not so useful for testing persistent storage or 122# exploring disk buffering implementations, but it is 123# great for testing the kernel on real hardware without 124# needing a scratch disk. 125MEMFSOBJS = $(filter-out ide.o,$(OBJS)) memide.o 126kernelmemfs: $(MEMFSOBJS) entry.o entryother initcode fs.img 127 $(LD) $(LDFLAGS) -Ttext 0x100000 -e main -o kernelmemfs entry.o $(MEMFSOBJS) -b binary initcode entryother fs.img 128 $(OBJDUMP) -S kernelmemfs > kernelmemfs.asm 129 $(OBJDUMP) -t kernelmemfs | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > kernelmemfs.sym 130 131tags: $(OBJS) entryother.S _init 132 etags *.S *.c 133 134vectors.S: vectors.pl 135 perl vectors.pl > vectors.S 136 137ULIB = ulib.o usys.o printf.o umalloc.o 138 139_%: %.o $(ULIB) 140 $(LD) $(LDFLAGS) -N -e main -Ttext 0 -o $@ $^ 141 $(OBJDUMP) -S $@ > $*.asm 142 $(OBJDUMP) -t $@ | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > $*.sym 143 144_forktest: forktest.o $(ULIB) 145 # forktest has less library code linked in - needs to be small 146 # in order to be able to max out the proc table. 147 $(LD) $(LDFLAGS) -N -e main -Ttext 0 -o _forktest forktest.o ulib.o usys.o 148 $(OBJDUMP) -S _forktest > forktest.asm 149 150mkfs: mkfs.c fs.h 151 gcc -Werror -Wall -o mkfs mkfs.c 152 153# Prevent deletion of intermediate files, e.g. cat.o, after first build, so 154# that disk image changes after first build are persistent until clean. More 155# details: 156# http://www.gnu.org/software/make/manual/html_node/Chained-Rules.html 157.PRECIOUS: %.o 158 159UPROGS=\ 160 _cat\ 161 _echo\ 162 _forktest\ 163 _grep\ 164 _init\ 165 _kill\ 166 _ln\ 167 _ls\ 168 _mkdir\ 169 _rm\ 170 _sh\ 171 _stressfs\ 172 _usertests\ 173 _wc\ 174 _zombie\ 175 176fs.img: mkfs README $(UPROGS) 177 ./mkfs fs.img README $(UPROGS) 178 179-include *.d 180 181clean: 182 rm -f *.tex *.dvi *.idx *.aux *.log *.ind *.ilg \ 183 *.o *.d *.asm *.sym vectors.S bootblock entryother \ 184 initcode initcode.out kernel xv6.img fs.img kernelmemfs mkfs \ 185 .gdbinit \ 186 $(UPROGS) 187 188# make a printout 189FILES = $(shell grep -v '^\#' runoff.list) 190PRINT = runoff.list runoff.spec README toc.hdr toc.ftr $(FILES) 191 192xv6.pdf: $(PRINT) 193 ./runoff 194 ls -l xv6.pdf 195 196print: xv6.pdf 197 198# run in emulators 199 200bochs : fs.img xv6.img 201 if [ ! -e .bochsrc ]; then ln -s dot-bochsrc .bochsrc; fi 202 bochs -q 203 204# try to generate a unique GDB port 205GDBPORT = $(shell expr `id -u` % 5000 + 25000) 206# QEMU's gdb stub command line changed in 0.11 207QEMUGDB = $(shell if $(QEMU) -help | grep -q '^-gdb'; \ 208 then echo "-gdb tcp::$(GDBPORT)"; \ 209 else echo "-s -p $(GDBPORT)"; fi) 210ifndef CPUS 211CPUS := 2 212endif 213QEMUOPTS = -hdb fs.img xv6.img -smp $(CPUS) -m 512 $(QEMUEXTRA) 214 215qemu: fs.img xv6.img 216 $(QEMU) -serial mon:stdio $(QEMUOPTS) 217 218qemu-memfs: xv6memfs.img 219 $(QEMU) xv6memfs.img -smp $(CPUS) 220 221qemu-nox: fs.img xv6.img 222 $(QEMU) -nographic $(QEMUOPTS) 223 224.gdbinit: .gdbinit.tmpl 225 sed "s/localhost:1234/localhost:$(GDBPORT)/" < $^ > $@ 226 227qemu-gdb: fs.img xv6.img .gdbinit 228 @echo "*** Now run 'gdb'." 1>&2 229 $(QEMU) -serial mon:stdio $(QEMUOPTS) -S $(QEMUGDB) 230 231qemu-nox-gdb: fs.img xv6.img .gdbinit 232 @echo "*** Now run 'gdb'." 1>&2 233 $(QEMU) -nographic $(QEMUOPTS) -S $(QEMUGDB) 234 235# CUT HERE 236# prepare dist for students 237# after running make dist, probably want to 238# rename it to rev0 or rev1 or so on and then 239# check in that version. 240 241EXTRA=\ 242 mkfs.c ulib.c user.h cat.c echo.c forktest.c grep.c kill.c\ 243 ln.c ls.c mkdir.c rm.c stressfs.c usertests.c wc.c zombie.c\ 244 printf.c umalloc.c\ 245 README dot-bochsrc *.pl toc.* runoff runoff1 runoff.list\ 246 .gdbinit.tmpl gdbutil\ 247 248dist: 249 rm -rf dist 250 mkdir dist 251 for i in $(FILES); \ 252 do \ 253 grep -v PAGEBREAK $$i >dist/$$i; \ 254 done 255 sed '/CUT HERE/,$$d' Makefile >dist/Makefile 256 echo >dist/runoff.spec 257 cp $(EXTRA) dist 258 259dist-test: 260 rm -rf dist 261 make dist 262 rm -rf dist-test 263 mkdir dist-test 264 cp dist/* dist-test 265 cd dist-test; $(MAKE) print 266 cd dist-test; $(MAKE) bochs || true 267 cd dist-test; $(MAKE) qemu 268 269# update this rule (change rev#) when it is time to 270# make a new revision. 271tar: 272 rm -rf /tmp/xv6 273 mkdir -p /tmp/xv6 274 cp dist/* dist/.gdbinit.tmpl /tmp/xv6 275 (cd /tmp; tar cf - xv6) | gzip >xv6-rev5.tar.gz 276 277.PHONY: dist-test dist 278