218 lines
5.3 KiB
Makefile
218 lines
5.3 KiB
Makefile
OBJS = \
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start.o \
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console.o \
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uart.o \
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kalloc.o \
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spinlock.o \
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string.o \
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main.o \
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vm.o \
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proc.o \
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swtch.o \
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trampoline.o \
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trap.o \
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syscall.o \
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sysproc.o \
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bio.o \
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fs.o \
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log.o \
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sleeplock.o \
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file.o \
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pipe.o \
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ramdisk.o \
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exec.o \
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sysfile.o \
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kernelvec.o \
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plic.o
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# riscv64-unknown-elf- or riscv64-linux-gnu-
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# perhaps in /opt/riscv/bin
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#TOOLPREFIX =
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# Try to infer the correct TOOLPREFIX if not set
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ifndef TOOLPREFIX
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TOOLPREFIX := $(shell if riscv64-unknown-elf-objdump -i 2>&1 | grep 'elf64-big' >/dev/null 2>&1; \
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then echo 'riscv64-unknown-elf-'; \
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elif riscv64-linux-gnu-objdump -i 2>&1 | grep 'elf64-big' >/dev/null 2>&1; \
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then echo 'riscv64-linux-gnu-'; \
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else echo "***" 1>&2; \
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echo "*** Error: Couldn't find an riscv64 version of GCC/binutils." 1>&2; \
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echo "*** To turn off this error, run 'gmake TOOLPREFIX= ...'." 1>&2; \
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echo "***" 1>&2; exit 1; fi)
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endif
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QEMU = qemu-system-riscv64
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CC = $(TOOLPREFIX)gcc
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AS = $(TOOLPREFIX)gas
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LD = $(TOOLPREFIX)ld
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OBJCOPY = $(TOOLPREFIX)objcopy
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OBJDUMP = $(TOOLPREFIX)objdump
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# CFLAGS = -fno-pic -static -fno-builtin -fno-strict-aliasing -Wall -MD -ggdb -Werror -fno-omit-frame-pointer -O
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CFLAGS = -Wall -Werror
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CFLAGS += -mcmodel=medany
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CFLAGS += -ffreestanding -fno-common -nostdlib -mno-relax
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CFLAGS += $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
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# Disable PIE when possible (for Ubuntu 16.10 toolchain)
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ifneq ($(shell $(CC) -dumpspecs 2>/dev/null | grep -e '[^f]no-pie'),)
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CFLAGS += -fno-pie -no-pie
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endif
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ifneq ($(shell $(CC) -dumpspecs 2>/dev/null | grep -e '[^f]nopie'),)
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CFLAGS += -fno-pie -nopie
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endif
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LDFLAGS = -z max-page-size=4096
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kernel: $(OBJS) entry.o kernel.ld initcode
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$(LD) $(LDFLAGS) -T kernel.ld -o kernel entry.o $(OBJS)
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$(OBJDUMP) -S kernel > kernel.asm
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$(OBJDUMP) -t kernel | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > kernel.sym
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initcode: initcode.S
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$(CC) $(CFLAGS) -nostdinc -I. -c initcode.S
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$(LD) $(LDFLAGS) -N -e start -Ttext 0 -o initcode.out initcode.o
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$(OBJCOPY) -S -O binary initcode.out initcode
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$(OBJDUMP) -S initcode.o > initcode.asm
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tags: $(OBJS) entryother.S _init
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etags *.S *.c
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vectors.S: vectors.pl
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./vectors.pl > vectors.S
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ULIB = ulib.o usys.o printf.o umalloc.o
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_%: %.o $(ULIB)
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$(LD) $(LDFLAGS) -N -e main -Ttext 0 -o $@ $^
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$(OBJDUMP) -S $@ > $*.asm
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$(OBJDUMP) -t $@ | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > $*.sym
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usys.S : usys.pl
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perl ./usys.pl > usys.S
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_forktest: forktest.o $(ULIB)
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# forktest has less library code linked in - needs to be small
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# in order to be able to max out the proc table.
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$(LD) $(LDFLAGS) -N -e main -Ttext 0 -o _forktest forktest.o ulib.o usys.o
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$(OBJDUMP) -S _forktest > forktest.asm
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mkfs: mkfs.c fs.h
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gcc -Werror -Wall -o mkfs mkfs.c
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# Prevent deletion of intermediate files, e.g. cat.o, after first build, so
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# that disk image changes after first build are persistent until clean. More
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# details:
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# http://www.gnu.org/software/make/manual/html_node/Chained-Rules.html
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.PRECIOUS: %.o
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UPROGS=\
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_cat\
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_echo\
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_forktest\
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_grep\
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_init\
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_kill\
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_ln\
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_ls\
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_mkdir\
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_rm\
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_sh\
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_stressfs\
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_usertests\
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_wc\
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_zombie\
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fs.img: mkfs README $(UPROGS)
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./mkfs fs.img README $(UPROGS)
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-include *.d
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clean:
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rm -f *.tex *.dvi *.idx *.aux *.log *.ind *.ilg \
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*.o *.d *.asm *.sym vectors.S bootblock entryother \
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initcode initcode.out kernel fs.img kernelmemfs \
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mkfs .gdbinit \
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$(UPROGS)
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# make a printout
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FILES = $(shell grep -v '^\#' runoff.list)
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PRINT = runoff.list runoff.spec README toc.hdr toc.ftr $(FILES)
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xv6.pdf: $(PRINT)
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./runoff
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ls -l xv6.pdf
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print: xv6.pdf
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# try to generate a unique GDB port
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GDBPORT = $(shell expr `id -u` % 5000 + 25000)
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# QEMU's gdb stub command line changed in 0.11
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QEMUGDB = $(shell if $(QEMU) -help | grep -q '^-gdb'; \
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then echo "-gdb tcp::$(GDBPORT)"; \
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else echo "-s -p $(GDBPORT)"; fi)
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ifndef CPUS
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CPUS := 2
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endif
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QEMUOPTS = -machine virt -kernel kernel -m 3G -smp $(CPUS) -nographic
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QEMUOPTS += -initrd fs.img
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qemu: kernel fs.img
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$(QEMU) $(QEMUOPTS)
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.gdbinit: .gdbinit.tmpl-riscv
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sed "s/:1234/:$(GDBPORT)/" < $^ > $@
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qemu-gdb: kernel .gdbinit fs.img
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@echo "*** Now run 'gdb'." 1>&2
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$(QEMU) $(QEMUOPTS) -S $(QEMUGDB)
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qemu-nox-gdb: fs.img kernel .gdbinit
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@echo "*** Now run 'gdb'." 1>&2
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$(QEMU) -nographic $(QEMUOPTS) -S $(QEMUGDB)
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# CUT HERE
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# prepare dist for students
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# after running make dist, probably want to
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# rename it to rev0 or rev1 or so on and then
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# check in that version.
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EXTRA=\
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mkfs.c ulib.c user.h cat.c echo.c forktest.c grep.c kill.c\
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ln.c ls.c mkdir.c rm.c stressfs.c usertests.c wc.c zombie.c\
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printf.c umalloc.c\
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README dot-bochsrc *.pl toc.* runoff runoff1 runoff.list\
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.gdbinit.tmpl gdbutil\
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dist:
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rm -rf dist
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mkdir dist
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for i in $(FILES); \
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do \
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grep -v PAGEBREAK $$i >dist/$$i; \
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done
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sed '/CUT HERE/,$$d' Makefile >dist/Makefile
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echo >dist/runoff.spec
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cp $(EXTRA) dist
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dist-test:
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rm -rf dist
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make dist
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rm -rf dist-test
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mkdir dist-test
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cp dist/* dist-test
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cd dist-test; $(MAKE) print
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cd dist-test; $(MAKE) bochs || true
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cd dist-test; $(MAKE) qemu
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# update this rule (change rev#) when it is time to
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# make a new revision.
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tar:
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rm -rf /tmp/xv6
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mkdir -p /tmp/xv6
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cp dist/* dist/.gdbinit.tmpl /tmp/xv6
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(cd /tmp; tar cf - xv6) | gzip >xv6-rev10.tar.gz # the next one will be 10 (9/17)
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.PHONY: dist-test dist
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