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...
util
| Author | SHA1 | Date | |
|---|---|---|---|
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79e8024d61 | ||
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53c5c818d3 | ||
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56aacf5261 | ||
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3b6dc1bb98 | ||
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6bd4e66b23 | ||
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5ed6844af4 |
12
.gitignore
vendored
12
.gitignore
vendored
@ -11,7 +11,17 @@ entryother
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initcode
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initcode.out
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kernelmemfs
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mkfs
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mkfs/mkfs
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kernel/kernel
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user/usys.S
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.gdbinit
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*.zip
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xv6.out*
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.vagrant/
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submissions/
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ph
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barrier
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/lab-*.json
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.DS_Store
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*.dSYM
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*.pcap
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229
Makefile
229
Makefile
@ -1,14 +1,16 @@
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# To compile and run with a lab solution, set the lab name in conf/lab.mk
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# (e.g., LAB=util). Run make grade to test solution with the lab's
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# grade script (e.g., grade-lab-util).
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-include conf/lab.mk
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K=kernel
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U=user
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OBJS = \
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$K/entry.o \
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$K/start.o \
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$K/console.o \
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$K/printf.o \
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$K/uart.o \
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$K/kalloc.o \
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$K/spinlock.o \
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$K/string.o \
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$K/main.o \
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$K/vm.o \
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@ -30,6 +32,33 @@ OBJS = \
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$K/plic.o \
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$K/virtio_disk.o
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OBJS_KCSAN = \
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$K/start.o \
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$K/console.o \
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$K/printf.o \
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$K/uart.o \
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$K/spinlock.o
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ifdef KCSAN
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OBJS_KCSAN += \
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$K/kcsan.o
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endif
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ifeq ($(LAB),lock)
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OBJS += \
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$K/stats.o\
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$K/sprintf.o
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endif
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ifeq ($(LAB),net)
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OBJS += \
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$K/e1000.o \
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$K/net.o \
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$K/pci.o
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endif
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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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@ -57,6 +86,13 @@ OBJCOPY = $(TOOLPREFIX)objcopy
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OBJDUMP = $(TOOLPREFIX)objdump
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CFLAGS = -Wall -Werror -O -fno-omit-frame-pointer -ggdb -gdwarf-2
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ifdef LAB
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LABUPPER = $(shell echo $(LAB) | tr a-z A-Z)
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XCFLAGS += -DSOL_$(LABUPPER) -DLAB_$(LABUPPER)
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endif
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CFLAGS += $(XCFLAGS)
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CFLAGS += -MD
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CFLAGS += -mcmodel=medany
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# CFLAGS += -ffreestanding -fno-common -nostdlib -mno-relax
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@ -70,6 +106,15 @@ CFLAGS += -fno-builtin-printf -fno-builtin-fprintf -fno-builtin-vprintf
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CFLAGS += -I.
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CFLAGS += $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
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ifeq ($(LAB),net)
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CFLAGS += -DNET_TESTS_PORT=$(SERVERPORT)
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endif
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ifdef KCSAN
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CFLAGS += -DKCSAN
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KCSANFLAG = -fsanitize=thread -fno-inline
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endif
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# Disable PIE when possible (for Ubuntu 16.10 toolchain)
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ifneq ($(shell $(CC) -dumpspecs 2>/dev/null | grep -e '[^f]no-pie'),)
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CFLAGS += -fno-pie -no-pie
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@ -80,11 +125,17 @@ endif
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LDFLAGS = -z max-page-size=4096
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$K/kernel: $(OBJS) $K/kernel.ld $U/initcode
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$(LD) $(LDFLAGS) -T $K/kernel.ld -o $K/kernel $(OBJS)
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$K/kernel: $(OBJS) $(OBJS_KCSAN) $K/kernel.ld $U/initcode
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$(LD) $(LDFLAGS) -T $K/kernel.ld -o $K/kernel $(OBJS) $(OBJS_KCSAN)
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$(OBJDUMP) -S $K/kernel > $K/kernel.asm
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$(OBJDUMP) -t $K/kernel | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > $K/kernel.sym
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$(OBJS): EXTRAFLAG := $(KCSANFLAG)
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$K/%.o: $K/%.c
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$(CC) $(CFLAGS) $(EXTRAFLAG) -c -o $@ $<
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$U/initcode: $U/initcode.S
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$(CC) $(CFLAGS) -march=rv64g -nostdinc -I. -Ikernel -c $U/initcode.S -o $U/initcode.o
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$(LD) $(LDFLAGS) -N -e start -Ttext 0 -o $U/initcode.out $U/initcode.o
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@ -96,6 +147,10 @@ tags: $(OBJS) _init
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ULIB = $U/ulib.o $U/usys.o $U/printf.o $U/umalloc.o
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ifeq ($(LAB),lock)
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ULIB += $U/statistics.o
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endif
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_%: %.o $(ULIB)
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$(LD) $(LDFLAGS) -T $U/user.ld -o $@ $^
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$(OBJDUMP) -S $@ > $*.asm
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@ -114,7 +169,7 @@ $U/_forktest: $U/forktest.o $(ULIB)
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$(OBJDUMP) -S $U/_forktest > $U/forktest.asm
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mkfs/mkfs: mkfs/mkfs.c $K/fs.h $K/param.h
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gcc -Werror -Wall -I. -o mkfs/mkfs mkfs/mkfs.c
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gcc $(XCFLAGS) -Werror -Wall -I. -o mkfs/mkfs 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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@ -140,18 +195,96 @@ UPROGS=\
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$U/_wc\
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$U/_zombie\
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fs.img: mkfs/mkfs README $(UPROGS)
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mkfs/mkfs fs.img README $(UPROGS)
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ifeq ($(LAB),syscall)
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UPROGS += \
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$U/_attack\
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$U/_attacktest\
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$U/_secret
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endif
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ifeq ($(LAB),lock)
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UPROGS += \
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$U/_stats
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endif
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ifeq ($(LAB),traps)
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UPROGS += \
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$U/_call\
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$U/_bttest
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endif
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ifeq ($(LAB),lazy)
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UPROGS += \
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$U/_lazytests
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endif
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ifeq ($(LAB),cow)
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UPROGS += \
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$U/_cowtest
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endif
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ifeq ($(LAB),thread)
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UPROGS += \
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$U/_uthread
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$U/uthread_switch.o : $U/uthread_switch.S
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$(CC) $(CFLAGS) -c -o $U/uthread_switch.o $U/uthread_switch.S
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$U/_uthread: $U/uthread.o $U/uthread_switch.o $(ULIB)
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$(LD) $(LDFLAGS) -N -e main -Ttext 0 -o $U/_uthread $U/uthread.o $U/uthread_switch.o $(ULIB)
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$(OBJDUMP) -S $U/_uthread > $U/uthread.asm
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ph: notxv6/ph.c
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gcc -o ph -g -O2 $(XCFLAGS) notxv6/ph.c -pthread
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barrier: notxv6/barrier.c
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gcc -o barrier -g -O2 $(XCFLAGS) notxv6/barrier.c -pthread
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endif
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ifeq ($(LAB),pgtbl)
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UPROGS += \
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$U/_pgtbltest
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endif
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ifeq ($(LAB),lock)
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UPROGS += \
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$U/_kalloctest\
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$U/_bcachetest
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endif
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ifeq ($(LAB),fs)
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UPROGS += \
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$U/_bigfile
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endif
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ifeq ($(LAB),net)
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UPROGS += \
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$U/_nettest
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endif
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UEXTRA=
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ifeq ($(LAB),util)
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UEXTRA += user/xargstest.sh
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endif
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fs.img: mkfs/mkfs README $(UEXTRA) $(UPROGS)
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mkfs/mkfs fs.img README $(UEXTRA) $(UPROGS)
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-include kernel/*.d user/*.d
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clean:
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rm -f *.tex *.dvi *.idx *.aux *.log *.ind *.ilg \
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clean:
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rm -rf *.tex *.dvi *.idx *.aux *.log *.ind *.ilg *.dSYM *.zip *.pcap \
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*/*.o */*.d */*.asm */*.sym \
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$U/initcode $U/initcode.out $K/kernel fs.img \
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mkfs/mkfs .gdbinit \
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$U/usys.S \
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$(UPROGS)
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$U/initcode $U/initcode.out $U/usys.S $U/_* \
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$K/kernel \
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mkfs/mkfs fs.img .gdbinit __pycache__ xv6.out* \
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ph barrier
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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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@ -162,12 +295,23 @@ QEMUGDB = $(shell if $(QEMU) -help | grep -q '^-gdb'; \
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ifndef CPUS
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CPUS := 3
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endif
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ifeq ($(LAB),fs)
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CPUS := 1
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endif
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FWDPORT1 = $(shell expr `id -u` % 5000 + 25999)
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FWDPORT2 = $(shell expr `id -u` % 5000 + 30999)
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QEMUOPTS = -machine virt -bios none -kernel $K/kernel -m 128M -smp $(CPUS) -nographic
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QEMUOPTS += -global virtio-mmio.force-legacy=false
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QEMUOPTS += -drive file=fs.img,if=none,format=raw,id=x0
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QEMUOPTS += -device virtio-blk-device,drive=x0,bus=virtio-mmio-bus.0
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ifeq ($(LAB),net)
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QEMUOPTS += -netdev user,id=net0,hostfwd=udp::$(FWDPORT1)-:2000,hostfwd=udp::$(FWDPORT2)-:2001 -object filter-dump,id=net0,netdev=net0,file=packets.pcap
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QEMUOPTS += -device e1000,netdev=net0,bus=pcie.0
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endif
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qemu: $K/kernel fs.img
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$(QEMU) $(QEMUOPTS)
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@ -178,3 +322,56 @@ qemu-gdb: $K/kernel .gdbinit fs.img
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@echo "*** Now run 'gdb' in another window." 1>&2
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$(QEMU) $(QEMUOPTS) -S $(QEMUGDB)
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ifeq ($(LAB),net)
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# try to generate a unique port for the echo server
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SERVERPORT = $(shell expr `id -u` % 5000 + 25099)
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|
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endif
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|
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##
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## FOR testing lab grading script
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##
|
||||
|
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ifneq ($(V),@)
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GRADEFLAGS += -v
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endif
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|
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print-gdbport:
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@echo $(GDBPORT)
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|
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grade:
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@echo $(MAKE) clean
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@$(MAKE) clean || \
|
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(echo "'make clean' failed. HINT: Do you have another running instance of xv6?" && exit 1)
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./grade-lab-$(LAB) $(GRADEFLAGS)
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|
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##
|
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## FOR submissions
|
||||
##
|
||||
|
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submit-check:
|
||||
@if ! test -d .git; then \
|
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echo No .git directory, is this a git repository?; \
|
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false; \
|
||||
fi
|
||||
@if test "$$(git symbolic-ref HEAD)" != refs/heads/$(LAB); then \
|
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git branch; \
|
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read -p "You are not on the $(LAB) branch. Hand-in the current branch? [y/N] " r; \
|
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test "$$r" = y; \
|
||||
fi
|
||||
@if ! git diff-files --quiet || ! git diff-index --quiet --cached HEAD; then \
|
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git status -s; \
|
||||
echo; \
|
||||
echo "You have uncomitted changes. Please commit or stash them."; \
|
||||
false; \
|
||||
fi
|
||||
@if test -n "`git status -s`"; then \
|
||||
git status -s; \
|
||||
read -p "Untracked files will not be handed in. Continue? [y/N] " r; \
|
||||
test "$$r" = y; \
|
||||
fi
|
||||
|
||||
zipball: clean submit-check
|
||||
git archive --verbose --format zip --output lab.zip HEAD
|
||||
|
||||
.PHONY: zipball clean grade submit-check
|
||||
|
||||
1
conf/lab.mk
Normal file
1
conf/lab.mk
Normal file
@ -0,0 +1 @@
|
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LAB=util
|
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105
grade-lab-util
Executable file
105
grade-lab-util
Executable file
@ -0,0 +1,105 @@
|
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#!/usr/bin/env python3
|
||||
|
||||
import re
|
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from gradelib import *
|
||||
|
||||
r = Runner(save("xv6.out"))
|
||||
|
||||
@test(5, "sleep, no arguments")
|
||||
def test_sleep_no_args():
|
||||
r.run_qemu(shell_script([
|
||||
'sleep'
|
||||
]))
|
||||
r.match(no=["exec .* failed", "$ sleep\n$"])
|
||||
|
||||
@test(5, "sleep, returns")
|
||||
def test_sleep_no_args():
|
||||
r.run_qemu(shell_script([
|
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'sleep',
|
||||
'echo OK'
|
||||
]))
|
||||
r.match('^OK$', no=["exec .* failed", "$ sleep\n$"])
|
||||
|
||||
@test(10, "sleep, makes syscall")
|
||||
def test_sleep():
|
||||
r.run_qemu(shell_script([
|
||||
'sleep 10',
|
||||
'echo FAIL'
|
||||
]), stop_breakpoint('sys_sleep'))
|
||||
r.match('\\$ sleep 10', no=['FAIL'])
|
||||
|
||||
@test(20, "pingpong")
|
||||
def test_pingpong():
|
||||
r.run_qemu(shell_script([
|
||||
'pingpong', 'echo OK'
|
||||
]))
|
||||
r.match('^\\d+: received ping$', '^\\d+: received pong$', '^OK$')
|
||||
|
||||
@test(20, "primes")
|
||||
def test_primes():
|
||||
r.run_qemu(shell_script([
|
||||
'primes', 'echo OK'
|
||||
]))
|
||||
args = ['prime %d' % i for i in [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269]]
|
||||
args.append('^OK$')
|
||||
r.match(*args)
|
||||
|
||||
@test(10, "find, in current directory")
|
||||
def test_find_curdir():
|
||||
fn = random_str()
|
||||
r.run_qemu(shell_script([
|
||||
'echo > %s' % fn,
|
||||
'find . %s' % fn
|
||||
]))
|
||||
r.match('./%s' % fn)
|
||||
r.match(no=["./README", "README"])
|
||||
|
||||
@test(10, "find, in sub-directory")
|
||||
def test_find_curdir():
|
||||
dd = random_str()
|
||||
fn = random_str()
|
||||
r.run_qemu(shell_script([
|
||||
'echo > %s' % fn,
|
||||
'mkdir %s' % dd,
|
||||
'echo > %s/%s' % (dd, fn),
|
||||
'find %s %s' % (dd, fn)
|
||||
]))
|
||||
r.match('%s/%s' % (dd, fn))
|
||||
r.match(no=['./%s' % fn])
|
||||
|
||||
@test(10, "find, recursive")
|
||||
def test_find_recursive():
|
||||
needle = random_str()
|
||||
dirs = [random_str() for _ in range(3)]
|
||||
r.run_qemu(shell_script([
|
||||
'mkdir %s' % dirs[0],
|
||||
'echo > %s/%s' % (dirs[0], needle),
|
||||
'mkdir %s/%s' % (dirs[0], dirs[1]),
|
||||
'echo > %s/%s/%s' % (dirs[0], dirs[1], needle),
|
||||
'mkdir %s' % dirs[2],
|
||||
'echo > %s/%s' % (dirs[2], needle),
|
||||
'find . %s' % needle
|
||||
]))
|
||||
r.match('./%s/%s' % (dirs[0], needle),
|
||||
'./%s/%s/%s' % (dirs[0], dirs[1], needle),
|
||||
'./%s/%s' % (dirs[2], needle))
|
||||
|
||||
@test(10, "xargs")
|
||||
def test_xargs():
|
||||
r.run_qemu(shell_script([
|
||||
'sh < xargstest.sh',
|
||||
'echo DONE',
|
||||
], 'DONE'))
|
||||
matches = re.findall("hello", r.qemu.output)
|
||||
assert_equal(len(matches), 3, "Number of appearances of 'hello'")
|
||||
|
||||
@test(9, "xargs, multi-line echo")
|
||||
def test_xargs_multiline():
|
||||
r.run_qemu(shell_script(['(echo 1 ; echo 2) | xargs echo']))
|
||||
r.match('^1$', '^2$')
|
||||
|
||||
@test(1, "time")
|
||||
def test_time():
|
||||
check_time()
|
||||
|
||||
run_tests()
|
||||
628
gradelib.py
Normal file
628
gradelib.py
Normal file
@ -0,0 +1,628 @@
|
||||
from __future__ import print_function
|
||||
|
||||
import sys, os, re, time, socket, select, subprocess, errno, shutil, random, string, json
|
||||
from subprocess import check_call, Popen
|
||||
from optparse import OptionParser
|
||||
|
||||
__all__ = []
|
||||
|
||||
##################################################################
|
||||
# Test structure
|
||||
#
|
||||
|
||||
__all__ += ["test", "end_part", "run_tests", "get_current_test"]
|
||||
|
||||
TESTS = []
|
||||
TOTAL = POSSIBLE = 0
|
||||
PART_TOTAL = PART_POSSIBLE = 0
|
||||
CURRENT_TEST = None
|
||||
GRADES = {}
|
||||
|
||||
def test(points, title=None, parent=None):
|
||||
"""Decorator for declaring test functions. If title is None, the
|
||||
title of the test will be derived from the function name by
|
||||
stripping the leading "test_" and replacing underscores with
|
||||
spaces."""
|
||||
|
||||
def register_test(fn, title=title):
|
||||
if not title:
|
||||
assert fn.__name__.startswith("test_")
|
||||
title = fn.__name__[5:].replace("_", " ")
|
||||
if parent:
|
||||
title = " " + title
|
||||
|
||||
def run_test():
|
||||
global TOTAL, POSSIBLE, CURRENT_TEST, GRADES
|
||||
|
||||
# Handle test dependencies
|
||||
if run_test.complete:
|
||||
return run_test.ok
|
||||
run_test.complete = True
|
||||
parent_failed = False
|
||||
if parent:
|
||||
parent_failed = not parent()
|
||||
|
||||
# Run the test
|
||||
fail = None
|
||||
start = time.time()
|
||||
CURRENT_TEST = run_test
|
||||
sys.stdout.write("== Test %s == " % title)
|
||||
if parent:
|
||||
sys.stdout.write("\n")
|
||||
sys.stdout.flush()
|
||||
try:
|
||||
if parent_failed:
|
||||
raise AssertionError('Parent failed: %s' % parent.__name__)
|
||||
fn()
|
||||
except AssertionError as e:
|
||||
fail = str(e)
|
||||
|
||||
# Display and handle test result
|
||||
POSSIBLE += points
|
||||
if points:
|
||||
print("%s: %s" % (title, \
|
||||
(color("red", "FAIL") if fail else color("green", "OK"))), end=' ')
|
||||
if time.time() - start > 0.1:
|
||||
print("(%.1fs)" % (time.time() - start), end=' ')
|
||||
print()
|
||||
if fail:
|
||||
print(" %s" % fail.replace("\n", "\n "))
|
||||
else:
|
||||
TOTAL += points
|
||||
if points:
|
||||
GRADES[title] = 0 if fail else points
|
||||
|
||||
for callback in run_test.on_finish:
|
||||
callback(fail)
|
||||
CURRENT_TEST = None
|
||||
|
||||
run_test.ok = not fail
|
||||
return run_test.ok
|
||||
|
||||
# Record test metadata on the test wrapper function
|
||||
run_test.__name__ = fn.__name__
|
||||
run_test.title = title
|
||||
run_test.complete = False
|
||||
run_test.ok = False
|
||||
run_test.on_finish = []
|
||||
TESTS.append(run_test)
|
||||
return run_test
|
||||
return register_test
|
||||
|
||||
def end_part(name):
|
||||
def show_part():
|
||||
global PART_TOTAL, PART_POSSIBLE
|
||||
print("Part %s score: %d/%d" % \
|
||||
(name, TOTAL - PART_TOTAL, POSSIBLE - PART_POSSIBLE))
|
||||
print()
|
||||
PART_TOTAL, PART_POSSIBLE = TOTAL, POSSIBLE
|
||||
show_part.title = ""
|
||||
TESTS.append(show_part)
|
||||
|
||||
def write_results():
|
||||
global options
|
||||
if not options.results:
|
||||
return
|
||||
try:
|
||||
with open(options.results, "w") as f:
|
||||
f.write(json.dumps(GRADES))
|
||||
except OSError as e:
|
||||
print("Provided a bad results path. Error:", e)
|
||||
|
||||
def run_tests():
|
||||
"""Set up for testing and run the registered test functions."""
|
||||
|
||||
# Handle command line
|
||||
global options
|
||||
parser = OptionParser(usage="usage: %prog [-v] [filters...]")
|
||||
parser.add_option("-v", "--verbose", action="store_true",
|
||||
help="print commands")
|
||||
parser.add_option("--color", choices=["never", "always", "auto"],
|
||||
default="auto", help="never, always, or auto")
|
||||
parser.add_option("--results", help="results file path")
|
||||
(options, args) = parser.parse_args()
|
||||
|
||||
# Start with a full build to catch build errors
|
||||
make()
|
||||
|
||||
# Clean the file system if there is one
|
||||
reset_fs()
|
||||
|
||||
# Run tests
|
||||
limit = list(map(str.lower, args))
|
||||
try:
|
||||
for test in TESTS:
|
||||
if not limit or any(l in test.title.lower() for l in limit):
|
||||
test()
|
||||
if not limit:
|
||||
write_results()
|
||||
print("Score: %d/%d" % (TOTAL, POSSIBLE))
|
||||
except KeyboardInterrupt:
|
||||
pass
|
||||
if TOTAL < POSSIBLE:
|
||||
sys.exit(1)
|
||||
|
||||
def get_current_test():
|
||||
if not CURRENT_TEST:
|
||||
raise RuntimeError("No test is running")
|
||||
return CURRENT_TEST
|
||||
|
||||
##################################################################
|
||||
# Assertions
|
||||
#
|
||||
|
||||
__all__ += ["assert_equal", "assert_lines_match"]
|
||||
|
||||
def assert_equal(got, expect, msg=""):
|
||||
if got == expect:
|
||||
return
|
||||
if msg:
|
||||
msg += "\n"
|
||||
raise AssertionError("%sgot:\n %s\nexpected:\n %s" %
|
||||
(msg, str(got).replace("\n", "\n "),
|
||||
str(expect).replace("\n", "\n ")))
|
||||
|
||||
def assert_lines_match(text, *regexps, **kw):
|
||||
"""Assert that all of regexps match some line in text. If a 'no'
|
||||
keyword argument is given, it must be a list of regexps that must
|
||||
*not* match any line in text."""
|
||||
|
||||
def assert_lines_match_kw(no=[]):
|
||||
return no
|
||||
no = assert_lines_match_kw(**kw)
|
||||
|
||||
# Check text against regexps
|
||||
lines = text.splitlines()
|
||||
good = set()
|
||||
bad = set()
|
||||
for i, line in enumerate(lines):
|
||||
if any(re.match(r, line) for r in regexps):
|
||||
good.add(i)
|
||||
regexps = [r for r in regexps if not re.match(r, line)]
|
||||
if any(re.match(r, line) for r in no):
|
||||
bad.add(i)
|
||||
|
||||
if not regexps and not bad:
|
||||
return
|
||||
|
||||
# We failed; construct an informative failure message
|
||||
show = set()
|
||||
for lineno in good.union(bad):
|
||||
for offset in range(-2, 3):
|
||||
show.add(lineno + offset)
|
||||
if regexps:
|
||||
show.update(n for n in range(len(lines) - 5, len(lines)))
|
||||
|
||||
msg = []
|
||||
last = -1
|
||||
for lineno in sorted(show):
|
||||
if 0 <= lineno < len(lines):
|
||||
if lineno != last + 1:
|
||||
msg.append("...")
|
||||
last = lineno
|
||||
msg.append("%s %s" % (color("red", "BAD ") if lineno in bad else
|
||||
color("green", "GOOD") if lineno in good
|
||||
else " ",
|
||||
lines[lineno]))
|
||||
if last != len(lines) - 1:
|
||||
msg.append("...")
|
||||
if bad:
|
||||
msg.append("unexpected lines in output")
|
||||
for r in regexps:
|
||||
msg.append(color("red", "MISSING") + " '%s'" % r)
|
||||
raise AssertionError("\n".join(msg))
|
||||
|
||||
##################################################################
|
||||
# Utilities
|
||||
#
|
||||
|
||||
__all__ += ["make", "maybe_unlink", "reset_fs", "color", "random_str", "check_time", "check_answers"]
|
||||
|
||||
MAKE_TIMESTAMP = 0
|
||||
|
||||
def pre_make():
|
||||
"""Delay prior to running make to ensure file mtimes change."""
|
||||
while int(time.time()) == MAKE_TIMESTAMP:
|
||||
time.sleep(0.1)
|
||||
|
||||
def post_make():
|
||||
"""Record the time after make completes so that the next run of
|
||||
make can be delayed if needed."""
|
||||
global MAKE_TIMESTAMP
|
||||
MAKE_TIMESTAMP = int(time.time())
|
||||
|
||||
def make(*target):
|
||||
pre_make()
|
||||
if Popen(("make",) + target).wait():
|
||||
sys.exit(1)
|
||||
post_make()
|
||||
|
||||
def show_command(cmd):
|
||||
from pipes import quote
|
||||
print("\n$", " ".join(map(quote, cmd)))
|
||||
|
||||
def maybe_unlink(*paths):
|
||||
for path in paths:
|
||||
try:
|
||||
os.unlink(path)
|
||||
except EnvironmentError as e:
|
||||
if e.errno != errno.ENOENT:
|
||||
raise
|
||||
|
||||
COLORS = {"default": "\033[0m", "red": "\033[31m", "green": "\033[32m"}
|
||||
|
||||
def color(name, text):
|
||||
if options.color == "always" or (options.color == "auto" and os.isatty(1)):
|
||||
return COLORS[name] + text + COLORS["default"]
|
||||
return text
|
||||
|
||||
def reset_fs():
|
||||
if os.path.exists("obj/fs/clean-fs.img"):
|
||||
shutil.copyfile("obj/fs/clean-fs.img", "obj/fs/fs.img")
|
||||
|
||||
def random_str(n=8):
|
||||
letters = string.ascii_letters + string.digits
|
||||
return ''.join(random.choice(letters) for _ in range(n))
|
||||
|
||||
def check_time():
|
||||
try:
|
||||
print("")
|
||||
with open('time.txt') as f:
|
||||
d = f.read().strip()
|
||||
if not re.match(r'^\d+$', d):
|
||||
raise AssertionError('time.txt does not contain a single integer (number of hours spent on the lab)')
|
||||
except IOError:
|
||||
raise AssertionError('Cannot read time.txt')
|
||||
|
||||
def check_answers(file, n=10):
|
||||
try:
|
||||
print("")
|
||||
with open(file) as f:
|
||||
d = f.read().strip()
|
||||
if len(d) < n:
|
||||
raise AssertionError('%s does not seem to contain enough text' % file)
|
||||
except IOError:
|
||||
raise AssertionError('Cannot read %s' % file)
|
||||
|
||||
|
||||
##################################################################
|
||||
# Controllers
|
||||
#
|
||||
|
||||
__all__ += ["QEMU", "GDBClient"]
|
||||
|
||||
class QEMU(object):
|
||||
_GDBPORT = None
|
||||
|
||||
def __init__(self, *make_args):
|
||||
# Check that QEMU is not currently running
|
||||
try:
|
||||
GDBClient(self.get_gdb_port(), timeout=0).close()
|
||||
except socket.error:
|
||||
pass
|
||||
else:
|
||||
print("""\
|
||||
GDB stub found on port %d.
|
||||
QEMU appears to already be running. Please exit it if possible or use
|
||||
'killall qemu' or 'killall qemu.real'.""" % self.get_gdb_port(), file=sys.stderr)
|
||||
sys.exit(1)
|
||||
|
||||
if options.verbose:
|
||||
show_command(("make",) + make_args)
|
||||
cmd = ("make", "-s", "--no-print-directory") + make_args
|
||||
self.proc = Popen(cmd, stdout=subprocess.PIPE,
|
||||
stderr=subprocess.STDOUT,
|
||||
stdin=subprocess.PIPE)
|
||||
# Accumulated output as a string
|
||||
self.output = ""
|
||||
# Accumulated output as a bytearray
|
||||
self.outbytes = bytearray()
|
||||
self.on_output = []
|
||||
|
||||
@staticmethod
|
||||
def get_gdb_port():
|
||||
if QEMU._GDBPORT is None:
|
||||
p = Popen(["make", "-s", "--no-print-directory", "print-gdbport"],
|
||||
stdout=subprocess.PIPE)
|
||||
(out, _) = p.communicate()
|
||||
if p.returncode:
|
||||
raise RuntimeError(
|
||||
"Failed to get gdbport: make exited with %d" %
|
||||
p.returncode)
|
||||
QEMU._GDBPORT = int(out)
|
||||
return QEMU._GDBPORT
|
||||
|
||||
def fileno(self):
|
||||
if self.proc:
|
||||
return self.proc.stdout.fileno()
|
||||
|
||||
def handle_read(self):
|
||||
buf = os.read(self.proc.stdout.fileno(), 4096)
|
||||
self.outbytes.extend(buf)
|
||||
self.output = self.outbytes.decode("utf-8", "replace")
|
||||
for callback in self.on_output:
|
||||
callback(buf)
|
||||
if buf == b"":
|
||||
self.wait()
|
||||
return
|
||||
|
||||
def write(self, buf):
|
||||
if isinstance(buf, str):
|
||||
buf = buf.encode('utf-8')
|
||||
self.proc.stdin.write(buf)
|
||||
self.proc.stdin.flush()
|
||||
|
||||
def wait(self):
|
||||
if self.proc:
|
||||
self.proc.wait()
|
||||
self.proc = None
|
||||
|
||||
def kill(self):
|
||||
if self.proc:
|
||||
self.proc.terminate()
|
||||
|
||||
class GDBClient(object):
|
||||
def __init__(self, port, timeout=15):
|
||||
start = time.time()
|
||||
while True:
|
||||
self.sock = socket.socket()
|
||||
try:
|
||||
self.sock.settimeout(1)
|
||||
self.sock.connect(("localhost", port))
|
||||
break
|
||||
except socket.error:
|
||||
if time.time() >= start + timeout:
|
||||
raise
|
||||
self.__buf = ""
|
||||
|
||||
def fileno(self):
|
||||
if self.sock:
|
||||
return self.sock.fileno()
|
||||
|
||||
def handle_read(self):
|
||||
try:
|
||||
data = self.sock.recv(4096).decode("ascii", "replace")
|
||||
except socket.error:
|
||||
data = ""
|
||||
if data == "":
|
||||
self.sock.close()
|
||||
self.sock = None
|
||||
return
|
||||
self.__buf += data
|
||||
|
||||
while True:
|
||||
m = re.search(r"\$([^#]*)#[0-9a-zA-Z]{2}", self.__buf)
|
||||
if not m:
|
||||
break
|
||||
pkt = m.group(1)
|
||||
self.__buf = self.__buf[m.end():]
|
||||
|
||||
if pkt.startswith("T05"):
|
||||
# Breakpoint
|
||||
raise TerminateTest
|
||||
|
||||
def __send(self, cmd):
|
||||
packet = "$%s#%02x" % (cmd, sum(map(ord, cmd)) % 256)
|
||||
self.sock.sendall(packet.encode("ascii"))
|
||||
|
||||
def __send_break(self):
|
||||
self.sock.sendall(b"\x03")
|
||||
|
||||
def close(self):
|
||||
if self.sock:
|
||||
self.sock.close()
|
||||
self.sock = None
|
||||
|
||||
def cont(self):
|
||||
self.__send("c")
|
||||
|
||||
def breakpoint(self, addr):
|
||||
self.__send("Z1,%x,1" % addr)
|
||||
|
||||
|
||||
##################################################################
|
||||
# QEMU test runner
|
||||
#
|
||||
|
||||
__all__ += ["TerminateTest", "Runner"]
|
||||
|
||||
class TerminateTest(Exception):
|
||||
pass
|
||||
|
||||
class Runner():
|
||||
def __init__(self, *default_monitors):
|
||||
self.__default_monitors = default_monitors
|
||||
|
||||
def run_qemu(self, *monitors, **kw):
|
||||
"""Run a QEMU-based test. monitors should functions that will
|
||||
be called with this Runner instance once QEMU and GDB are
|
||||
started. Typically, they should register callbacks that throw
|
||||
TerminateTest when stop events occur. The target_base
|
||||
argument gives the make target to run. The make_args argument
|
||||
should be a list of additional arguments to pass to make. The
|
||||
timeout argument bounds how long to run before returning."""
|
||||
|
||||
def run_qemu_kw(target_base="qemu", make_args=[], timeout=30):
|
||||
return target_base, make_args, timeout
|
||||
target_base, make_args, timeout = run_qemu_kw(**kw)
|
||||
|
||||
# Start QEMU
|
||||
pre_make()
|
||||
self.qemu = QEMU(target_base + "-gdb", *make_args)
|
||||
self.gdb = None
|
||||
|
||||
try:
|
||||
# Wait for QEMU to start or make to fail. This will set
|
||||
# self.gdb if QEMU starts.
|
||||
self.qemu.on_output = [self.__monitor_start]
|
||||
self.__react([self.qemu], timeout=90)
|
||||
self.qemu.on_output = []
|
||||
if self.gdb is None:
|
||||
print("Failed to connect to QEMU; output:")
|
||||
print(self.qemu.output)
|
||||
sys.exit(1)
|
||||
post_make()
|
||||
|
||||
# QEMU and GDB are up
|
||||
self.reactors = [self.qemu, self.gdb]
|
||||
|
||||
# Start monitoring
|
||||
for m in self.__default_monitors + monitors:
|
||||
m(self)
|
||||
|
||||
# Run and react
|
||||
self.gdb.cont()
|
||||
self.__react(self.reactors, timeout)
|
||||
finally:
|
||||
# Shutdown QEMU
|
||||
try:
|
||||
if self.gdb is None:
|
||||
sys.exit(1)
|
||||
self.qemu.kill()
|
||||
self.__react(self.reactors, 5)
|
||||
self.gdb.close()
|
||||
self.qemu.wait()
|
||||
except:
|
||||
print("""\
|
||||
Failed to shutdown QEMU. You might need to 'killall qemu' or
|
||||
'killall qemu.real'.
|
||||
""")
|
||||
raise
|
||||
|
||||
def __monitor_start(self, output):
|
||||
if b"\n" in output:
|
||||
try:
|
||||
self.gdb = GDBClient(self.qemu.get_gdb_port(), timeout=2)
|
||||
raise TerminateTest
|
||||
except socket.error:
|
||||
pass
|
||||
if not len(output):
|
||||
raise TerminateTest
|
||||
|
||||
def __react(self, reactors, timeout):
|
||||
deadline = time.time() + timeout
|
||||
try:
|
||||
while True:
|
||||
timeleft = deadline - time.time()
|
||||
if timeleft < 0:
|
||||
sys.stdout.write("Timeout! ")
|
||||
sys.stdout.flush()
|
||||
return
|
||||
|
||||
rset = [r for r in reactors if r.fileno() is not None]
|
||||
if not rset:
|
||||
return
|
||||
|
||||
rset, _, _ = select.select(rset, [], [], timeleft)
|
||||
for reactor in rset:
|
||||
reactor.handle_read()
|
||||
except TerminateTest:
|
||||
pass
|
||||
|
||||
def user_test(self, binary, *monitors, **kw):
|
||||
"""Run a user test using the specified binary. Monitors and
|
||||
keyword arguments are as for run_qemu. This runs on a disk
|
||||
snapshot unless the keyword argument 'snapshot' is False."""
|
||||
|
||||
maybe_unlink("obj/kern/init.o", "obj/kern/kernel")
|
||||
if kw.pop("snapshot", True):
|
||||
kw.setdefault("make_args", []).append("QEMUEXTRA+=-snapshot")
|
||||
self.run_qemu(target_base="run-%s" % binary, *monitors, **kw)
|
||||
|
||||
def match(self, *args, **kwargs):
|
||||
"""Shortcut to call assert_lines_match on the most recent QEMU
|
||||
output."""
|
||||
|
||||
assert_lines_match(self.qemu.output, *args, **kwargs)
|
||||
|
||||
##################################################################
|
||||
# Monitors
|
||||
#
|
||||
|
||||
__all__ += ["save", "stop_breakpoint", "call_on_line", "stop_on_line", "shell_script"]
|
||||
|
||||
def save(path):
|
||||
"""Return a monitor that writes QEMU's output to path. If the
|
||||
test fails, copy the output to path.test-name."""
|
||||
|
||||
def setup_save(runner):
|
||||
f.seek(0)
|
||||
f.truncate()
|
||||
runner.qemu.on_output.append(f.write)
|
||||
get_current_test().on_finish.append(save_on_finish)
|
||||
|
||||
def save_on_finish(fail):
|
||||
f.flush()
|
||||
save_path = path + "." + get_current_test().__name__[5:]
|
||||
if fail:
|
||||
shutil.copyfile(path, save_path)
|
||||
print(" QEMU output saved to %s" % save_path)
|
||||
elif os.path.exists(save_path):
|
||||
os.unlink(save_path)
|
||||
print(" (Old %s failure log removed)" % save_path)
|
||||
|
||||
f = open(path, "wb")
|
||||
return setup_save
|
||||
|
||||
def stop_breakpoint(addr):
|
||||
"""Returns a monitor that stops when addr is reached. addr may be
|
||||
a number or the name of a symbol."""
|
||||
|
||||
def setup_breakpoint(runner):
|
||||
if isinstance(addr, str):
|
||||
addrs = [int(sym[:16], 16) for sym in open("kernel/kernel.sym")
|
||||
if sym[17:].strip() == addr]
|
||||
assert len(addrs), "Symbol %s not found" % addr
|
||||
runner.gdb.breakpoint(addrs[0])
|
||||
else:
|
||||
runner.gdb.breakpoint(addr)
|
||||
return setup_breakpoint
|
||||
|
||||
def call_on_line(regexp, callback):
|
||||
"""Returns a monitor that calls 'callback' when QEMU prints a line
|
||||
matching 'regexp'."""
|
||||
|
||||
def setup_call_on_line(runner):
|
||||
buf = bytearray()
|
||||
def handle_output(output):
|
||||
buf.extend(output)
|
||||
while b"\n" in buf:
|
||||
line, buf[:] = buf.split(b"\n", 1)
|
||||
line = line.decode("utf-8", "replace")
|
||||
if re.match(regexp, line):
|
||||
callback(line)
|
||||
runner.qemu.on_output.append(handle_output)
|
||||
return setup_call_on_line
|
||||
|
||||
def stop_on_line(regexp):
|
||||
"""Returns a monitor that stops when QEMU prints a line matching
|
||||
'regexp'."""
|
||||
|
||||
def stop(line):
|
||||
raise TerminateTest
|
||||
return call_on_line(regexp, stop)
|
||||
|
||||
def shell_script(script, terminate_match=None):
|
||||
"""Returns a monitor that plays the script, and stops when the script is
|
||||
done executing."""
|
||||
|
||||
def setup_call_on_line(runner):
|
||||
class context:
|
||||
n = 0
|
||||
buf = bytearray()
|
||||
def handle_output(output):
|
||||
context.buf.extend(output)
|
||||
if terminate_match is not None:
|
||||
if re.match(terminate_match, context.buf.decode('utf-8', 'replace')):
|
||||
raise TerminateTest
|
||||
if b'$ ' in context.buf:
|
||||
context.buf = bytearray()
|
||||
if context.n < len(script):
|
||||
runner.qemu.write(script[context.n])
|
||||
runner.qemu.write('\n')
|
||||
context.n += 1
|
||||
else:
|
||||
if terminate_match is None:
|
||||
raise TerminateTest
|
||||
runner.qemu.on_output.append(handle_output)
|
||||
return setup_call_on_line
|
||||
@ -1,4 +1,8 @@
|
||||
#define NPROC 64 // maximum number of processes
|
||||
#ifdef LAB_FS
|
||||
#define NPROC 10 // maximum number of processes
|
||||
#else
|
||||
#define NPROC 64 // maximum number of processes (speedsup bigfile)
|
||||
#endif
|
||||
#define NCPU 8 // maximum number of CPUs
|
||||
#define NOFILE 16 // open files per process
|
||||
#define NFILE 100 // open files per system
|
||||
@ -9,7 +13,21 @@
|
||||
#define MAXOPBLOCKS 10 // max # of blocks any FS op writes
|
||||
#define LOGSIZE (MAXOPBLOCKS*3) // max data blocks in on-disk log
|
||||
#define NBUF (MAXOPBLOCKS*3) // size of disk block cache
|
||||
#define FSSIZE 2000 // size of file system in blocks
|
||||
#ifdef LAB_FS
|
||||
#define FSSIZE 200000 // size of file system in blocks
|
||||
#else
|
||||
#ifdef LAB_LOCK
|
||||
#define FSSIZE 10000 // size of file system in blocks
|
||||
#else
|
||||
#define FSSIZE 2000 // size of file system in blocks
|
||||
#endif
|
||||
#endif
|
||||
#define MAXPATH 128 // maximum file path name
|
||||
#define USERSTACK 1 // user stack pages
|
||||
|
||||
#ifdef LAB_UTIL
|
||||
#define USERSTACK 2 // user stack pages
|
||||
#else
|
||||
#define USERSTACK 1 // user stack pages
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
@ -179,14 +179,16 @@ static inline uint64
|
||||
r_stimecmp()
|
||||
{
|
||||
uint64 x;
|
||||
asm volatile("csrr %0, stimecmp" : "=r" (x) );
|
||||
// asm volatile("csrr %0, stimecmp" : "=r" (x) );
|
||||
asm volatile("csrr %0, 0x14d" : "=r" (x) );
|
||||
return x;
|
||||
}
|
||||
|
||||
static inline void
|
||||
w_stimecmp(uint64 x)
|
||||
{
|
||||
asm volatile("csrw stimecmp, %0" : : "r" (x));
|
||||
// asm volatile("csrw stimecmp, %0" : : "r" (x));
|
||||
asm volatile("csrw 0x14d, %0" : : "r" (x));
|
||||
}
|
||||
|
||||
// Machine Environment Configuration Register
|
||||
@ -194,14 +196,16 @@ static inline uint64
|
||||
r_menvcfg()
|
||||
{
|
||||
uint64 x;
|
||||
asm volatile("csrr %0, menvcfg" : "=r" (x) );
|
||||
// asm volatile("csrr %0, menvcfg" : "=r" (x) );
|
||||
asm volatile("csrr %0, 0x30a" : "=r" (x) );
|
||||
return x;
|
||||
}
|
||||
|
||||
static inline void
|
||||
w_menvcfg(uint64 x)
|
||||
{
|
||||
asm volatile("csrw menvcfg, %0" : : "r" (x));
|
||||
//asm volatile("csrw menvcfg, %0" : : "r" (x));
|
||||
asm volatile("csrw 0x30a, %0" : : "r" (x));
|
||||
}
|
||||
|
||||
// Physical Memory Protection
|
||||
@ -310,6 +314,14 @@ r_sp()
|
||||
return x;
|
||||
}
|
||||
|
||||
static inline uint64
|
||||
r_fp()
|
||||
{
|
||||
uint64 x;
|
||||
asm volatile("mv %0, s0" : "=r" (x) );
|
||||
return x;
|
||||
}
|
||||
|
||||
// read and write tp, the thread pointer, which xv6 uses to hold
|
||||
// this core's hartid (core number), the index into cpus[].
|
||||
static inline uint64
|
||||
@ -350,6 +362,11 @@ typedef uint64 *pagetable_t; // 512 PTEs
|
||||
#define PGSIZE 4096 // bytes per page
|
||||
#define PGSHIFT 12 // bits of offset within a page
|
||||
|
||||
#ifdef LAB_PGTBL
|
||||
#define SUPERPGSIZE (2 * (1 << 20)) // bytes per page
|
||||
#define SUPERPGROUNDUP(sz) (((sz)+SUPERPGSIZE-1) & ~(SUPERPGSIZE-1))
|
||||
#endif
|
||||
|
||||
#define PGROUNDUP(sz) (((sz)+PGSIZE-1) & ~(PGSIZE-1))
|
||||
#define PGROUNDDOWN(a) (((a)) & ~(PGSIZE-1))
|
||||
|
||||
@ -359,6 +376,12 @@ typedef uint64 *pagetable_t; // 512 PTEs
|
||||
#define PTE_X (1L << 3)
|
||||
#define PTE_U (1L << 4) // user can access
|
||||
|
||||
|
||||
|
||||
#if defined(LAB_MMAP) || defined(LAB_PGTBL)
|
||||
#define PTE_LEAF(pte) (((pte) & PTE_R) | ((pte) & PTE_W) | ((pte) & PTE_X))
|
||||
#endif
|
||||
|
||||
// shift a physical address to the right place for a PTE.
|
||||
#define PA2PTE(pa) ((((uint64)pa) >> 12) << 10)
|
||||
|
||||
|
||||
6
user/xargstest.sh
Normal file
6
user/xargstest.sh
Normal file
@ -0,0 +1,6 @@
|
||||
mkdir a
|
||||
echo hello > a/b
|
||||
mkdir c
|
||||
echo hello > c/b
|
||||
echo hello > b
|
||||
find . b | xargs grep hello
|
||||
Loading…
Reference in New Issue
Block a user