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Makefile
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Makefile
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OBJS = \
bio.o\
console.o\
exec.o\
file.o\
fs.o\
ide.o\
kalloc.o\
kbd.o\
log.o\
main.o\
mp.o\
picirq.o\
pipe.o\
proc.o\
procasm.o\
spinlock.o\
string.o\
swtch.o\
syscall.o\
sysfile.o\
sysproc.o\
timer.o\
trapasm.o\
trap.o\
uart.o\
vectors.o\
vm.o\
# Cross-compiling (e.g., on Mac OS X)
TOOLPREFIX = mipsel-sde-elf-
# Using native tools (e.g., on X86 Linux)
#TOOLPREFIX =
# Try to infer the correct TOOLPREFIX if not set
ifndef TOOLPREFIX
TOOLPREFIX := $(shell if i386-jos-elf-objdump -i 2>&1 | grep '^elf32-i386$$' >/dev/null 2>&1; \
then echo 'i386-jos-elf-'; \
elif objdump -i 2>&1 | grep 'elf32-i386' >/dev/null 2>&1; \
then echo ''; \
else echo "***" 1>&2; \
echo "*** Error: Couldn't find an i386-*-elf version of GCC/binutils." 1>&2; \
echo "*** Is the directory with i386-jos-elf-gcc in your PATH?" 1>&2; \
echo "*** If your i386-*-elf toolchain is installed with a command" 1>&2; \
echo "*** prefix other than 'i386-jos-elf-', set your TOOLPREFIX" 1>&2; \
echo "*** environment variable to that prefix and run 'make' again." 1>&2; \
echo "*** To turn off this error, run 'gmake TOOLPREFIX= ...'." 1>&2; \
echo "***" 1>&2; exit 1; fi)
endif
# If the makefile can't find QEMU, specify its path here
# QEMU = qemu-system-i386
QEMU = qemu-system-mipsel
# Try to infer the correct QEMU
ifndef QEMU
QEMU = $(shell if which qemu > /dev/null; \
then echo qemu; exit; \
elif which qemu-system-i386 > /dev/null; \
then echo qemu-system-i386; exit; \
else \
qemu=/Applications/Q.app/Contents/MacOS/i386-softmmu.app/Contents/MacOS/i386-softmmu; \
if test -x $$qemu; then echo $$qemu; exit; fi; fi; \
echo "***" 1>&2; \
echo "*** Error: Couldn't find a working QEMU executable." 1>&2; \
echo "*** Is the directory containing the qemu binary in your PATH" 1>&2; \
echo "*** or have you tried setting the QEMU variable in Makefile?" 1>&2; \
echo "***" 1>&2; exit 1)
endif
CC = $(TOOLPREFIX)gcc
AS = $(TOOLPREFIX)gas
LD = $(TOOLPREFIX)ld
OBJCOPY = $(TOOLPREFIX)objcopy
OBJDUMP = $(TOOLPREFIX)objdump
CFLAGS = -fno-pic -static -fno-builtin -fno-strict-aliasing -fvar-tracking -fvar-tracking-assignments -O0 -g -std=gnu99 -Wall -Wunused-function -MD -gdwarf-2 -march=mips4 -G0 -fno-omit-frame-pointer -I.
CFLAGS += $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
ASFLAGS = -gdwarf-2 -I. -G0 -march=mips4
# FreeBSD ld wants ``elf_i386_fbsd''
LDFLAGS += -m elf32ltsmip -L. -G0
xv6memfs.img: kernelmemfs
dd if=/dev/zero of=xv6memfs.img count=10000
dd if=kernelmemfs of=xv6memfs.img seek=1 conv=notrunc
xv6.img: kernel fs.img
dd if=/dev/zero of=xv6.img count=10000
dd if=kernel of=xv6.img seek=1 conv=notrunc
bootblock: bootasm.S bootmain.c
$(CC) $(CFLAGS) -fno-pic -O -nostdinc -I. -c bootmain.c
$(CC) $(CFLAGS) -fno-pic -nostdinc -I. -c bootasm.S
$(LD) $(LDFLAGS) -N -e start -Ttext 0x7C00 -o bootblock.o bootasm.o bootmain.o
$(OBJDUMP) -S bootblock.o > bootblock.asm
$(OBJCOPY) -S -O binary -j .text bootblock.o bootblock
./sign.pl bootblock
initcode: initcode.S
$(CC) $(CFLAGS) -nostdinc -I. -c initcode.S
$(LD) $(LDFLAGS) -N -e start -Ttext 0 -o initcode.out initcode.o
$(OBJCOPY) -R .MIPS.abiflags -S -O binary initcode.out initcode
$(OBJDUMP) -S initcode.o > initcode.asm
kernel: $(OBJS) entry.o initcode kernel.ld
$(LD) $(LDFLAGS) -T kernel.ld -o kernel entry.o $(OBJS) -b binary initcode
$(OBJDUMP) -S kernel > kernel.asm
$(OBJDUMP) -t kernel | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > kernel.sym
# kernelmemfs is a copy of kernel that maintains the
# disk image in memory instead of writing to a disk.
# This is not so useful for testing persistent storage or
# exploring disk buffering implementations, but it is
# great for testing the kernel on real hardware without
# needing a scratch disk.
MEMFSOBJS = $(filter-out ide.o,$(OBJS)) memide.o
kernelmemfs: $(MEMFSOBJS) entry.o initcode kernel.ld fs.img
$(LD) $(LDFLAGS) -T kernel.ld -o kernelmemfs entry.o $(MEMFSOBJS) -b binary initcode fs.img
$(OBJDUMP) -S kernelmemfs > kernelmemfs.asm
$(OBJDUMP) -t kernelmemfs | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > kernelmemfs.sym
tags: $(OBJS) _init
etags *.S *.c
vectors.S: vectors.pl
perl vectors.pl > vectors.S
ULIB = lib/ulib.o lib/usys.o lib/printf.o lib/umalloc.o
_%: usr/%.o $(ULIB)
$(LD) $(LDFLAGS) -N -e main -Ttext 0 -o $*.o $^
$(OBJCOPY) -R .MIPS.abiflags $*.o $@
$(OBJDUMP) -S $*.o > $*.asm
$(OBJDUMP) -t $*.o | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > $*.sym
_forktest: usr/forktest.o $(ULIB)
# forktest has less library code linked in - needs to be small
# in order to be able to max out the proc table.
$(LD) $(LDFLAGS) -N -e main -Ttext 0 -o _forktest usr/forktest.o lib/ulib.o lib/usys.o
$(OBJDUMP) -S _forktest > forktest.asm
mkfs: tools/mkfs.c fs.h
gcc -g -Werror -Wall -std=gnu99 -o mkfs tools/mkfs.c -idirafter .
# Prevent deletion of intermediate files, e.g. cat.o, after first build, so
# that disk image changes after first build are persistent until clean. More
# details:
# http://www.gnu.org/software/make/manual/html_node/Chained-Rules.html
.PRECIOUS: %.o
BACK_UPROGS=\
_cat\
_echo\
_forktest\
_grep\
_init\
_kill\
_ln\
_ls\
_mkdir\
_rm\
_sh\
_stressfs\
_usertests\
_wc\
_zombie\
UPROGS=\
_cat\
_echo\
_forktest\
_grep\
_init\
_kill\
_ln\
_ls\
_mkdir\
_rm\
_sh\
_stressfs\
_wc\
_zombie\
fs.img: mkfs README $(UPROGS)
./mkfs fs.img README $(UPROGS)
-include *.d
clean:
rm -f *.tex *.dvi *.idx *.aux *.log *.ind *.ilg \
*.o *.d *.asm *.sym vectors.S bootblock \
initcode initcode.out kernel xv6.img fs.img kernelmemfs mkfs \
$(UPROGS) \
lib/*.o lib/*.d \
usr/*.o usr/*.d usr/*.sym usr/*.asm
# try to generate a unique GDB port
GDBPORT = $(shell expr `id -u` % 5000 + 25000)
# QEMU's gdb stub command line changed in 0.11
QEMUGDB = $(shell if $(QEMU) -help | grep -q '^-gdb'; \
then echo "-gdb tcp::$(GDBPORT)"; \
else echo "-s -p $(GDBPORT)"; fi)
ifndef CPUS
CPUS := 1
endif
# QEMUOPTS = -hdb fs.img -kernel kernel -smp $(CPUS) -m 512 $(QEMUEXTRA)
QEMUOPTS = -hdb fs.img -kernel kernel -smp 1 -m 256 -M mips
QEMUOPTSMEMFS = -kernel kernelmemfs -smp 1 -m 256 -M mips
qemu: fs.img kernel
@echo -e "\033[0;31m'make qemu' is not implemented at current. Run 'make qemu-memfs'!\033[0m"
$(QEMU) -serial mon:stdio $(QEMUOPTS)
qemu-memfs: kernelmemfs
$(QEMU) -serial mon:stdio $(QEMUOPTSMEMFS)
qemu-nox: fs.img xv6.img
$(QEMU) -nographic $(QEMUOPTS)
#.gdbinit: .gdbinit.tmpl
# sed "s/localhost:1234/localhost:$(GDBPORT)/" < $^ > $@
#qemu-gdb: fs.img xv6.img .gdbinit
# @echo "*** Now run 'gdb'." 1>&2
# $(QEMU) -serial mon:stdio $(QEMUOPTS) -S $(QEMUGDB)
qemu-gdb: fs.img kernel .gdbinit
@echo -e "\033[0;31m'make qemu-gdb' is not implemented at current. Run 'make qemu-memfs-gdb'!\033[0m"
@echo "*** Now run 'gdb'." 1>&2
$(QEMU) -serial mon:stdio $(QEMUOPTS) -S $(QEMUGDB)
qemu-memfs-gdb: kernelmemfs .gdbinit
@echo "*** Now run 'gdb'." 1>&2
$(QEMU) -serial mon:stdio $(QEMUOPTSMEMFS) -S $(QEMUGDB)
qemu-nox-gdb: fs.img xv6.img .gdbinit
@echo "*** Now run 'gdb'." 1>&2
$(QEMU) -nographic $(QEMUOPTS) -S $(QEMUGDB)