xref: /xv6-public/Makefile (revision b1c66ca8) 
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	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	log.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$$' >/dev/null 2>&1; \
40	then echo 'i386-jos-elf-'; \
41	elif objdump -i 2>&1 | grep 'elf32-i386' >/dev/null 2>&1; \
42	then echo ''; \
43	else echo "***" 1>&2; \
44	echo "*** Error: Couldn't find an i386-*-elf version of GCC/binutils." 1>&2; \
45	echo "*** Is the directory with i386-jos-elf-gcc in your PATH?" 1>&2; \
46	echo "*** If your i386-*-elf toolchain is installed with a command" 1>&2; \
47	echo "*** prefix other than 'i386-jos-elf-', set your TOOLPREFIX" 1>&2; \
48	echo "*** environment variable to that prefix and run 'make' again." 1>&2; \
49	echo "*** To turn off this error, run 'gmake TOOLPREFIX= ...'." 1>&2; \
50	echo "***" 1>&2; exit 1; fi)
51endif
52
53# If the makefile can't find QEMU, specify its path here
54#QEMU =
55
56# Try to infer the correct QEMU
57ifndef QEMU
58QEMU = $(shell if which qemu > /dev/null; \
59	then echo qemu; exit; \
60	else \
61	qemu=/Applications/Q.app/Contents/MacOS/i386-softmmu.app/Contents/MacOS/i386-softmmu; \
62	if test -x $$qemu; then echo $$qemu; exit; fi; fi; \
63	echo "***" 1>&2; \
64	echo "*** Error: Couldn't find a working QEMU executable." 1>&2; \
65	echo "*** Is the directory containing the qemu binary in your PATH" 1>&2; \
66	echo "*** or have you tried setting the QEMU variable in Makefile?" 1>&2; \
67	echo "***" 1>&2; exit 1)
68endif
69
70CC = $(TOOLPREFIX)gcc
71AS = $(TOOLPREFIX)gas
72LD = $(TOOLPREFIX)ld
73OBJCOPY = $(TOOLPREFIX)objcopy
74OBJDUMP = $(TOOLPREFIX)objdump
75#CFLAGS = -fno-pic -static -fno-builtin -fno-strict-aliasing -O2 -Wall -MD -ggdb -m32 -Werror -fno-omit-frame-pointer
76CFLAGS = -fno-pic -static -fno-builtin -fno-strict-aliasing -Wall -MD -ggdb -m32 -Werror -fno-omit-frame-pointer
77CFLAGS += $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
78ASFLAGS = -m32 -gdwarf-2 -Wa,-divide
79# FreeBSD ld wants ``elf_i386_fbsd''
80LDFLAGS += -m $(shell $(LD) -V | grep elf_i386 2>/dev/null)
81
82xv6.img: bootblock kernel fs.img
83	dd if=/dev/zero of=xv6.img count=10000
84	dd if=bootblock of=xv6.img conv=notrunc
85	dd if=kernel of=xv6.img seek=1 conv=notrunc
86
87xv6memfs.img: bootblock kernelmemfs
88	dd if=/dev/zero of=xv6memfs.img count=10000
89	dd if=bootblock of=xv6memfs.img conv=notrunc
90	dd if=kernelmemfs of=xv6memfs.img seek=1 conv=notrunc
91
92bootblock: bootasm.S bootmain.c
93	$(CC) $(CFLAGS) -fno-pic -O -nostdinc -I. -c bootmain.c
94	$(CC) $(CFLAGS) -fno-pic -nostdinc -I. -c bootasm.S
95	$(LD) $(LDFLAGS) -N -e start -Ttext 0x7C00 -o bootblock.o bootasm.o bootmain.o
96	$(OBJDUMP) -S bootblock.o > bootblock.asm
97	$(OBJCOPY) -S -O binary -j .text bootblock.o bootblock
98	./sign.pl bootblock
99
100entryother: entryother.S
101	$(CC) $(CFLAGS) -fno-pic -nostdinc -I. -c entryother.S
102	$(LD) $(LDFLAGS) -N -e start -Ttext 0x7000 -o bootblockother.o entryother.o
103	$(OBJCOPY) -S -O binary -j .text bootblockother.o entryother
104	$(OBJDUMP) -S bootblockother.o > entryother.asm
105
106initcode: initcode.S
107	$(CC) $(CFLAGS) -nostdinc -I. -c initcode.S
108	$(LD) $(LDFLAGS) -N -e start -Ttext 0 -o initcode.out initcode.o
109	$(OBJCOPY) -S -O binary initcode.out initcode
110	$(OBJDUMP) -S initcode.o > initcode.asm
111
112kernel: $(OBJS) entry.o entryother initcode kernel.ld
113	$(LD) $(LDFLAGS) -T kernel.ld -o kernel entry.o $(OBJS) -b binary initcode entryother
114	$(OBJDUMP) -S kernel > kernel.asm
115	$(OBJDUMP) -t kernel | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > kernel.sym
116
117# kernelmemfs is a copy of kernel that maintains the
118# disk image in memory instead of writing to a disk.
119# This is not so useful for testing persistent storage or
120# exploring disk buffering implementations, but it is
121# great for testing the kernel on real hardware without
122# needing a scratch disk.
123MEMFSOBJS = $(filter-out ide.o,$(OBJS)) memide.o
124kernelmemfs: $(MEMFSOBJS) entry.o entryother initcode fs.img
125	$(LD) $(LDFLAGS) -Ttext 0x100000 -e main -o kernelmemfs entry.o  $(MEMFSOBJS) -b binary initcode entryother fs.img
126	$(OBJDUMP) -S kernelmemfs > kernelmemfs.asm
127	$(OBJDUMP) -t kernelmemfs | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > kernelmemfs.sym
128
129tags: $(OBJS) entryother.S _init
130	etags *.S *.c
131
132vectors.S: vectors.pl
133	perl vectors.pl > vectors.S
134
135ULIB = ulib.o usys.o printf.o umalloc.o
136
137_%: %.o $(ULIB)
138	$(LD) $(LDFLAGS) -N -e main -Ttext 0 -o $@ $^
139	$(OBJDUMP) -S $@ > $*.asm
140	$(OBJDUMP) -t $@ | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > $*.sym
141
142_forktest: forktest.o $(ULIB)
143	# forktest has less library code linked in - needs to be small
144	# in order to be able to max out the proc table.
145	$(LD) $(LDFLAGS) -N -e main -Ttext 0 -o _forktest forktest.o ulib.o usys.o
146	$(OBJDUMP) -S _forktest > forktest.asm
147
148mkfs: mkfs.c fs.h
149	gcc -m32 -Werror -Wall -o mkfs mkfs.c
150
151UPROGS=\
152	_cat\
153	_echo\
154	_forktest\
155	_grep\
156	_init\
157	_kill\
158	_ln\
159	_ls\
160	_mkdir\
161	_rm\
162	_sh\
163	_stressfs\
164	_usertests\
165	_wc\
166	_zombie\
167
168fs.img: mkfs README $(UPROGS)
169	./mkfs fs.img README $(UPROGS)
170
171-include *.d
172
173clean:
174	rm -f *.tex *.dvi *.idx *.aux *.log *.ind *.ilg \
175	*.o *.d *.asm *.sym vectors.S bootblock entryother \
176	initcode initcode.out kernel xv6.img fs.img kernelmemfs mkfs \
177	.gdbinit \
178	$(UPROGS)
179
180# make a printout
181FILES = $(shell grep -v '^\#' runoff.list)
182PRINT = runoff.list runoff.spec README toc.hdr toc.ftr $(FILES)
183
184xv6.pdf: $(PRINT)
185	./runoff
186	ls -l xv6.pdf
187
188print: xv6.pdf
189
190# run in emulators
191
192bochs : fs.img xv6.img
193	if [ ! -e .bochsrc ]; then ln -s dot-bochsrc .bochsrc; fi
194	bochs -q
195
196# try to generate a unique GDB port
197GDBPORT = $(shell expr `id -u` % 5000 + 25000)
198# QEMU's gdb stub command line changed in 0.11
199QEMUGDB = $(shell if $(QEMU) -help | grep -q '^-gdb'; \
200	then echo "-gdb tcp::$(GDBPORT)"; \
201	else echo "-s -p $(GDBPORT)"; fi)
202ifndef CPUS
203CPUS := 2
204endif
205QEMUOPTS = -hdb fs.img xv6.img -smp $(CPUS) -m 512 $(QEMUEXTRA)
206
207qemu: fs.img xv6.img
208	$(QEMU) -serial mon:stdio $(QEMUOPTS)
209
210qemu-memfs: xv6memfs.img
211	$(QEMU) xv6memfs.img -smp $(CPUS)
212
213qemu-nox: fs.img xv6.img
214	$(QEMU) -nographic $(QEMUOPTS)
215
216.gdbinit: .gdbinit.tmpl
217	sed "s/localhost:1234/localhost:$(GDBPORT)/" < $^ > $@
218
219qemu-gdb: fs.img xv6.img .gdbinit
220	@echo "*** Now run 'gdb'." 1>&2
221	$(QEMU) -serial mon:stdio $(QEMUOPTS) -S $(QEMUGDB)
222
223qemu-nox-gdb: fs.img xv6.img .gdbinit
224	@echo "*** Now run 'gdb'." 1>&2
225	$(QEMU) -nographic $(QEMUOPTS) -S $(QEMUGDB)
226
227# CUT HERE
228# prepare dist for students
229# after running make dist, probably want to
230# rename it to rev0 or rev1 or so on and then
231# check in that version.
232
233EXTRA=\
234	mkfs.c ulib.c user.h cat.c echo.c forktest.c grep.c kill.c\
235	ln.c ls.c mkdir.c rm.c stressfs.c usertests.c wc.c zombie.c\
236	printf.c umalloc.c\
237	README dot-bochsrc *.pl toc.* runoff runoff1 runoff.list\
238	.gdbinit.tmpl gdbutil\
239
240dist:
241	rm -rf dist
242	mkdir dist
243	for i in $(FILES); \
244	do \
245		grep -v PAGEBREAK $$i >dist/$$i; \
246	done
247	sed '/CUT HERE/,$$d' Makefile >dist/Makefile
248	echo >dist/runoff.spec
249	cp $(EXTRA) dist
250
251dist-test:
252	rm -rf dist
253	make dist
254	rm -rf dist-test
255	mkdir dist-test
256	cp dist/* dist-test
257	cd dist-test; $(MAKE) print
258	cd dist-test; $(MAKE) bochs || true
259	cd dist-test; $(MAKE) qemu
260
261# update this rule (change rev#) when it is time to
262# make a new revision.
263tar:
264	rm -rf /tmp/xv6
265	mkdir -p /tmp/xv6
266	cp dist/* dist/.gdbinit.tmpl /tmp/xv6
267	(cd /tmp; tar cf - xv6) | gzip >xv6-rev5.tar.gz
268
269.PHONY: dist-test dist
270