xref: /xv6-public/Makefile (revision 0b6f4c08) 
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	sleeplock.o\
19	spinlock.o\
20	string.o\
21	swtch.o\
22	syscall.o\
23	sysfile.o\
24	sysproc.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$$' >/dev/null 2>&1; \
40	then echo 'i386-jos-elf-'; \
41	elif objdump -i 2>&1 | grep 'elf32-i386' >/dev/null 2>&1; \
42	then echo ''; \
43	else echo "***" 1>&2; \
44	echo "*** Error: Couldn't find an i386-*-elf version of GCC/binutils." 1>&2; \
45	echo "*** Is the directory with i386-jos-elf-gcc in your PATH?" 1>&2; \
46	echo "*** If your i386-*-elf toolchain is installed with a command" 1>&2; \
47	echo "*** prefix other than 'i386-jos-elf-', set your TOOLPREFIX" 1>&2; \
48	echo "*** environment variable to that prefix and run 'make' again." 1>&2; \
49	echo "*** To turn off this error, run 'gmake TOOLPREFIX= ...'." 1>&2; \
50	echo "***" 1>&2; exit 1; fi)
51endif
52
53# If the makefile can't find QEMU, specify its path here
54# QEMU = qemu-system-i386
55
56# Try to infer the correct QEMU
57ifndef QEMU
58QEMU = $(shell if which qemu > /dev/null; \
59	then echo qemu; exit; \
60	elif which qemu-system-i386 > /dev/null; \
61	then echo qemu-system-i386; exit; \
62	elif which qemu-system-x86_64 > /dev/null; \
63	then echo qemu-system-x86_64; exit; \
64	else \
65	qemu=/Applications/Q.app/Contents/MacOS/i386-softmmu.app/Contents/MacOS/i386-softmmu; \
66	if test -x $$qemu; then echo $$qemu; exit; fi; fi; \
67	echo "***" 1>&2; \
68	echo "*** Error: Couldn't find a working QEMU executable." 1>&2; \
69	echo "*** Is the directory containing the qemu binary in your PATH" 1>&2; \
70	echo "*** or have you tried setting the QEMU variable in Makefile?" 1>&2; \
71	echo "***" 1>&2; exit 1)
72endif
73
74CC = $(TOOLPREFIX)gcc
75AS = $(TOOLPREFIX)gas
76LD = $(TOOLPREFIX)ld
77OBJCOPY = $(TOOLPREFIX)objcopy
78OBJDUMP = $(TOOLPREFIX)objdump
79CFLAGS = -fno-pic -static -fno-builtin -fno-strict-aliasing -O2 -Wall -MD -ggdb -m32 -Werror -fno-omit-frame-pointer
80CFLAGS += $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
81ASFLAGS = -m32 -gdwarf-2 -Wa,-divide
82# FreeBSD ld wants ``elf_i386_fbsd''
83LDFLAGS += -m $(shell $(LD) -V | grep elf_i386 2>/dev/null | head -n 1)
84
85xv6.img: bootblock kernel fs.img
86	dd if=/dev/zero of=xv6.img count=10000
87	dd if=bootblock of=xv6.img conv=notrunc
88	dd if=kernel of=xv6.img seek=1 conv=notrunc
89
90xv6memfs.img: bootblock kernelmemfs
91	dd if=/dev/zero of=xv6memfs.img count=10000
92	dd if=bootblock of=xv6memfs.img conv=notrunc
93	dd if=kernelmemfs of=xv6memfs.img seek=1 conv=notrunc
94
95bootblock: bootasm.S bootmain.c
96	$(CC) $(CFLAGS) -fno-pic -O -nostdinc -I. -c bootmain.c
97	$(CC) $(CFLAGS) -fno-pic -nostdinc -I. -c bootasm.S
98	$(LD) $(LDFLAGS) -N -e start -Ttext 0x7C00 -o bootblock.o bootasm.o bootmain.o
99	$(OBJDUMP) -S bootblock.o > bootblock.asm
100	$(OBJCOPY) -S -O binary -j .text bootblock.o bootblock
101	./sign.pl bootblock
102
103entryother: entryother.S
104	$(CC) $(CFLAGS) -fno-pic -nostdinc -I. -c entryother.S
105	$(LD) $(LDFLAGS) -N -e start -Ttext 0x7000 -o bootblockother.o entryother.o
106	$(OBJCOPY) -S -O binary -j .text bootblockother.o entryother
107	$(OBJDUMP) -S bootblockother.o > entryother.asm
108
109initcode: initcode.S
110	$(CC) $(CFLAGS) -nostdinc -I. -c initcode.S
111	$(LD) $(LDFLAGS) -N -e start -Ttext 0 -o initcode.out initcode.o
112	$(OBJCOPY) -S -O binary initcode.out initcode
113	$(OBJDUMP) -S initcode.o > initcode.asm
114
115kernel: $(OBJS) entry.o entryother initcode kernel.ld
116	$(LD) $(LDFLAGS) -T kernel.ld -o kernel entry.o $(OBJS) -b binary initcode entryother
117	$(OBJDUMP) -S kernel > kernel.asm
118	$(OBJDUMP) -t kernel | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > kernel.sym
119
120# kernelmemfs is a copy of kernel that maintains the
121# disk image in memory instead of writing to a disk.
122# This is not so useful for testing persistent storage or
123# exploring disk buffering implementations, but it is
124# great for testing the kernel on real hardware without
125# needing a scratch disk.
126MEMFSOBJS = $(filter-out ide.o,$(OBJS)) memide.o
127kernelmemfs: $(MEMFSOBJS) entry.o entryother initcode kernel.ld fs.img
128	$(LD) $(LDFLAGS) -T kernel.ld -o kernelmemfs entry.o  $(MEMFSOBJS) -b binary initcode entryother fs.img
129	$(OBJDUMP) -S kernelmemfs > kernelmemfs.asm
130	$(OBJDUMP) -t kernelmemfs | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > kernelmemfs.sym
131
132tags: $(OBJS) entryother.S _init
133	etags *.S *.c
134
135vectors.S: vectors.pl
136	perl vectors.pl > vectors.S
137
138ULIB = ulib.o usys.o printf.o umalloc.o
139
140_%: %.o $(ULIB)
141	$(LD) $(LDFLAGS) -N -e main -Ttext 0 -o $@ $^
142	$(OBJDUMP) -S $@ > $*.asm
143	$(OBJDUMP) -t $@ | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > $*.sym
144
145_forktest: forktest.o $(ULIB)
146	# forktest has less library code linked in - needs to be small
147	# in order to be able to max out the proc table.
148	$(LD) $(LDFLAGS) -N -e main -Ttext 0 -o _forktest forktest.o ulib.o usys.o
149	$(OBJDUMP) -S _forktest > forktest.asm
150
151mkfs: mkfs.c fs.h
152	gcc -Werror -Wall -o mkfs mkfs.c
153
154# Prevent deletion of intermediate files, e.g. cat.o, after first build, so
155# that disk image changes after first build are persistent until clean.  More
156# details:
157# http://www.gnu.org/software/make/manual/html_node/Chained-Rules.html
158.PRECIOUS: %.o
159
160UPROGS=\
161	_cat\
162	_echo\
163	_forktest\
164	_grep\
165	_init\
166	_kill\
167	_ln\
168	_ls\
169	_mkdir\
170	_rm\
171	_sh\
172	_stressfs\
173	_usertests\
174	_wc\
175	_zombie\
176
177fs.img: mkfs README $(UPROGS)
178	./mkfs fs.img README $(UPROGS)
179
180-include *.d
181
182clean:
183	rm -f *.tex *.dvi *.idx *.aux *.log *.ind *.ilg \
184	*.o *.d *.asm *.sym vectors.S bootblock entryother \
185	initcode initcode.out kernel xv6.img fs.img kernelmemfs mkfs \
186	.gdbinit \
187	$(UPROGS)
188
189# make a printout
190FILES = $(shell grep -v '^\#' runoff.list)
191PRINT = runoff.list runoff.spec README toc.hdr toc.ftr $(FILES)
192
193xv6.pdf: $(PRINT)
194	./runoff
195	ls -l xv6.pdf
196
197print: xv6.pdf
198
199# run in emulators
200
201bochs : fs.img xv6.img
202	if [ ! -e .bochsrc ]; then ln -s dot-bochsrc .bochsrc; fi
203	bochs -q
204
205# try to generate a unique GDB port
206GDBPORT = $(shell expr `id -u` % 5000 + 25000)
207# QEMU's gdb stub command line changed in 0.11
208QEMUGDB = $(shell if $(QEMU) -help | grep -q '^-gdb'; \
209	then echo "-gdb tcp::$(GDBPORT)"; \
210	else echo "-s -p $(GDBPORT)"; fi)
211ifndef CPUS
212CPUS := 2
213endif
214QEMUOPTS = -drive file=fs.img,index=1,media=disk,format=raw -drive file=xv6.img,index=0,media=disk,format=raw -smp $(CPUS) -m 512 $(QEMUEXTRA)
215
216qemu: fs.img xv6.img
217	$(QEMU) -serial mon:stdio $(QEMUOPTS)
218
219qemu-memfs: xv6memfs.img
220	$(QEMU) -drive file=xv6memfs.img,index=0,media=disk,format=raw -smp $(CPUS) -m 256
221
222qemu-nox: fs.img xv6.img
223	$(QEMU) -nographic $(QEMUOPTS)
224
225.gdbinit: .gdbinit.tmpl
226	sed "s/localhost:1234/localhost:$(GDBPORT)/" < $^ > $@
227
228qemu-gdb: fs.img xv6.img .gdbinit
229	@echo "*** Now run 'gdb'." 1>&2
230	$(QEMU) -serial mon:stdio $(QEMUOPTS) -S $(QEMUGDB)
231
232qemu-nox-gdb: fs.img xv6.img .gdbinit
233	@echo "*** Now run 'gdb'." 1>&2
234	$(QEMU) -nographic $(QEMUOPTS) -S $(QEMUGDB)
235
236# CUT HERE
237# prepare dist for students
238# after running make dist, probably want to
239# rename it to rev0 or rev1 or so on and then
240# check in that version.
241
242EXTRA=\
243	mkfs.c ulib.c user.h cat.c echo.c forktest.c grep.c kill.c\
244	ln.c ls.c mkdir.c rm.c stressfs.c usertests.c wc.c zombie.c\
245	printf.c umalloc.c\
246	README dot-bochsrc *.pl toc.* runoff runoff1 runoff.list\
247	.gdbinit.tmpl gdbutil\
248
249dist:
250	rm -rf dist
251	mkdir dist
252	for i in $(FILES); \
253	do \
254		grep -v PAGEBREAK $$i >dist/$$i; \
255	done
256	sed '/CUT HERE/,$$d' Makefile >dist/Makefile
257	echo >dist/runoff.spec
258	cp $(EXTRA) dist
259
260dist-test:
261	rm -rf dist
262	make dist
263	rm -rf dist-test
264	mkdir dist-test
265	cp dist/* dist-test
266	cd dist-test; $(MAKE) print
267	cd dist-test; $(MAKE) bochs || true
268	cd dist-test; $(MAKE) qemu
269
270# update this rule (change rev#) when it is time to
271# make a new revision.
272tar:
273	rm -rf /tmp/xv6
274	mkdir -p /tmp/xv6
275	cp dist/* dist/.gdbinit.tmpl /tmp/xv6
276	(cd /tmp; tar cf - xv6) | gzip >xv6-rev10.tar.gz  # the next one will be 10 (9/17)
277
278.PHONY: dist-test dist
279