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1 # specify path to QEMU, installed with MacPorts
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2 QEMU = qemu-system-arm
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3
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4 include makefile.inc
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5
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12
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6 CC = arm-linux-gnu-gcc
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7 AS = arm-linux-gnu-as
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8 LD = arm-linux-gnu-ld
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9 OBJCOPY = arm-linux-gnu-objcopy
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10 OBJDUMP = arm-linux-gnu-objdump
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11
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12 CFLAGS = -fno-pic -static -fno-builtin -fno-strict-aliasing -Wall -I. -g -O0
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13
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14 ASFLAGS =
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15
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16 LIBGCC = $(shell $(CC) -print-libgcc-file-name)
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17
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18 LINK_BIN = $(call quiet-command,$(LD) $(LDFLAGS) \
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19 -T $(1) -o $(2) $(3) $(LIBS) -b binary $(4), " LINK $(TARGET_DIR)$@")
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20
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21 LINK_INIT = $(call quiet-command,$(LD) $(LDFLAGS) \
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22 $(1) -o $@.out $<, " LINK $(TARGET_DIR)$@")
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23 OBJCOPY_INIT = $(call quiet-command,$(OBJCOPY) \
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24 -S -O binary --prefix-symbols="_binary_$@" $@.out $@, " OBJCOPY $(TARGET_DIR)$@")
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25
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26
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27 # link the libgcc.a for __aeabi_idiv. ARM has no native support for div
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28 LIBS = $(LIBGCC)
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29
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30 OBJS = \
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31 lib/string.o \
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32 \
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33 arm.o\
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34 asm.o\
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35 bio.o\
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36 buddy.o\
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37 console.o\
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38 exec.o\
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39 file.o\
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40 fs.o\
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41 log.o\
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42 main.o\
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43 memide.o\
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44 pipe.o\
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45 proc.o\
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46 spinlock.o\
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47 start.o\
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48 swtch.o\
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49 syscall.o\
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50 sysfile.o\
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51 sysproc.o\
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52 trap_asm.o\
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53 trap.o\
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54 vm.o \
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55 \
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56 device/picirq.o \
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57 device/timer.o \
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58 device/uart.o
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59
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60 KERN_OBJS = $(OBJS) entry.o
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61 kernel.elf: $(addprefix build/,$(KERN_OBJS)) kernel.ld build/initcode build/fs.img
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62 cp -f build/initcode initcode
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63 cp -f build/fs.img fs.img
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64 $(call LINK_BIN, kernel.ld, kernel.elf, \
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65 $(addprefix build/,$(KERN_OBJS)), \
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66 initcode fs.img)
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67 $(OBJDUMP) -S kernel.elf > kernel.asm
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68 $(OBJDUMP) -t kernel.elf | sed '1,/SYMBOL TABLE/d; s/ .* / /; /^$$/d' > kernel.sym
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69 rm -f initcode fs.img
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70
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71 qemu: kernel.elf
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72 @clear
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73 @echo "Press Ctrl-A and then X to terminate QEMU session\n"
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74 $(QEMU) -M versatilepb -m 128 -cpu arm1176 -nographic -kernel kernel.elf
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75
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76 INITCODE_OBJ = initcode.o
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77 $(addprefix build/,$(INITCODE_OBJ)): initcode.S
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78 $(call build-directory)
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79 $(call AS_WITH, -nostdinc -I.)
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80
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81 #initcode is linked into the kernel, it will be used to craft the first process
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82 build/initcode: $(addprefix build/,$(INITCODE_OBJ))
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83 $(call LINK_INIT, -N -e start -Ttext 0)
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84 $(call OBJCOPY_INIT)
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85 $(OBJDUMP) -S $< > initcode.asm
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86
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87 build/fs.img:
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88 make -C tools
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89 make -C usr
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90
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91 clean:
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92 rm -rf build
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93 rm -f *.o *.d *.asm *.sym vectors.S bootblock entryother \
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94 initcode initcode.out kernel xv6.img fs.img kernel.elf memfs
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95 make -C tools clean
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96 make -C usr clean
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