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#
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# Copyright (C) 2005 Martin Decky
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# - Redistributions of source code must retain the above copyright
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#   notice, this list of conditions and the following disclaimer.
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# - Redistributions in binary form must reproduce the above copyright
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#   notice, this list of conditions and the following disclaimer in the
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#   documentation and/or other materials provided with the distribution.
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# - The name of the author may not be used to endorse or promote products
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#   derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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## Kernel release
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#
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VERSION = 0
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PATCHLEVEL = 1
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SUBLEVEL = 0
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EXTRAVERSION =
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NAME = Dawn
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RELEASE = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
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## Make some default assumptions
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#
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ifndef ARCH
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	ARCH = ia32
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endif
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## Common compiler flags
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#
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CFLAGS = -fno-builtin -fomit-frame-pointer -Werror-implicit-function-declaration -Wmissing-prototypes -Werror -O3 -nostdlib -nostdinc -Igeneric/include/
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LFLAGS = -M
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## Setup kernel configuration
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#
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include Makefile.config
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include Makefile.config
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include arch/$(ARCH)/Makefile.inc
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include arch/$(ARCH)/Makefile.inc
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include genarch/Makefile.inc
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include genarch/Makefile.inc
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ifeq ($(CONFIG_DEBUG),n)
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	DEFS += -DNDEBUG
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endif
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ifeq ($(CONFIG_DEBUG_SPINLOCK),y)
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	DEFS += -DDEBUG_SPINLOCK
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endif
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## Toolchain configuration
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#
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ifeq ($(COMPILER),native)
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	CC = gcc
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	AS = as
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	LD = ld
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	OBJCOPY = objcopy
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	OBJDUMP = objdump
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else
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	CC = $(TOOLCHAIN_DIR)/$(TARGET)-gcc
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	AS = $(TOOLCHAIN_DIR)/$(TARGET)-as
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	LD = $(TOOLCHAIN_DIR)/$(TARGET)-ld
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	OBJCOPY = $(TOOLCHAIN_DIR)/$(TARGET)-objcopy
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	OBJDUMP = $(TOOLCHAIN_DIR)/$(TARGET)-objdump
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endif
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## Generic kernel sources
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#
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GENERIC_SOURCES = \
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sources=generic/src/cpu/cpu.c \
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	generic/src/cpu/cpu.c \
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	generic/src/main/main.c \
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	generic/src/main/main.c \
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	generic/src/main/kinit.c \
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	generic/src/main/kinit.c \
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	generic/src/main/uinit.c \
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	generic/src/main/uinit.c \
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	generic/src/proc/scheduler.c \
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	generic/src/proc/scheduler.c \
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	generic/src/proc/thread.c \
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	generic/src/proc/thread.c \
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	generic/src/synch/semaphore.c \
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	generic/src/synch/semaphore.c \
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	generic/src/synch/waitq.c \
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	generic/src/synch/waitq.c \
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	generic/src/smp/ipi.c \
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	generic/src/smp/ipi.c \
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	generic/src/fb/font-8x16.c
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	generic/src/fb/font-8x16.c
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GENERIC_OBJECTS := $(addsuffix .o,$(basename $(GENERIC_SOURCES)))
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# CFLAGS options same for all targets
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ARCH_OBJECTS := $(addsuffix .o,$(basename $(ARCH_SOURCES)))
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CFLAGS+=-nostdinc -Igeneric/include/ -Werror-implicit-function-declaration -Wmissing-prototypes -Werror
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GENARCH_OBJECTS := $(addsuffix .o,$(basename $(GENARCH_SOURCES)))
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ifdef DEBUG_SPINLOCK
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CFLAGS+=-D$(DEBUG_SPINLOCK)
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.PHONY: all clean config depend
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endif
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ifdef USERSPACE
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CFLAGS+=-D$(USERSPACE)
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endif
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ifdef TEST
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test_objects:=$(addsuffix .o,$(basename test/$(TEST_DIR)/$(TEST_FILE)))
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CFLAGS+=-D$(TEST)
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endif
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arch_objects:=$(addsuffix .o,$(basename $(arch_sources)))
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genarch_objects:=$(addsuffix .o,$(basename $(genarch_sources)))
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objects:=$(addsuffix .o,$(basename $(sources)))
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.PHONY : all config depend build clean dist-clean boot
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all: dist-clean config depend build
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all: kernel.bin
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-include Makefile.depend
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-include Makefile.depend
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config:
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clean:
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	find generic/src/ generic/include/ -name arch -type l -exec rm \{\} \;
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	find generic/src/ arch/$(ARCH)/src/ genarch/src/ -name '*.o' -exec rm \{\} \;
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	find generic/src/ generic/include/ -name genarch -type l -exec rm \{\} \;
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	ln -s ../../arch/$(ARCH)/src/ generic/src/arch
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	ln -s ../../arch/$(ARCH)/include/ generic/include/arch
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	ln -s ../../genarch/src/ generic/src/genarch
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	ln -s ../../genarch/include/ generic/include/genarch
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	-rm -f kernel.bin kernel.map kernel.map.pre kernel.objdump src/debug/real_map.bin Makefile.depend generic/include/arch generic/include/genarch
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depend:
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config:
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	$(CC) $(CFLAGS) -M $(arch_sources) $(genarch_sources) $(sources) >Makefile.depend
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	ln -sfn ../../arch/$(ARCH)/include/ generic/include/arch
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	ln -sfn ../../genarch/include/ generic/include/genarch
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build: kernel.bin boot
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depend: config
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	$(CC) $(CFLAGS) -M $(ARCH_SOURCES) $(GENARCH_SOURCES) $(GENERIC_SOURCES) > Makefile.depend
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clean:
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	find generic/src/ arch/$(ARCH)/src/ genarch/src/ test/ -name '*.o' -exec rm \{\} \;
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	-rm *.bin kernel.map kernel.map.pre kernel.objdump generic/src/debug/real_map.bin
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	$(MAKE) -C arch/$(ARCH)/boot/ clean
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arch/$(ARCH)/_link.ld: arch/$(ARCH)/_link.ld.in
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dist-clean:
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	find generic/src/ generic/include/ -name arch -type l -exec rm \{\} \;
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	$(CC) $(CFLAGS) -E -x c $< | grep -v "^\#" > $@
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	find generic/src/ generic/include/ -name genarch -type l -exec rm \{\} \;
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	-rm Makefile.depend
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	-$(MAKE) clean
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generic/src/debug/real_map.bin: $(arch_objects) $(genarch_objects) $(objects) $(test_objects) arch/$(ARCH)/_link.ld
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generic/src/debug/real_map.bin: depend arch/$(ARCH)/_link.ld $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS)
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	$(OBJCOPY) -I binary -O $(BFD_NAME) -B $(BFD_ARCH) --prefix-sections=symtab Makefile generic/src/debug/empty_map.o
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	$(OBJCOPY) -I binary -O $(BFD_NAME) -B $(BFD_ARCH) --prefix-sections=symtab Makefile generic/src/debug/empty_map.o
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	$(LD) -T arch/$(ARCH)/_link.ld $(LFLAGS) $(arch_objects) $(genarch_objects) $(objects) $(test_objects) generic/src/debug/empty_map.o -o $@ -Map kernel.map.pre
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	$(LD) -T arch/$(ARCH)/_link.ld $(LFLAGS) $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS) generic/src/debug/empty_map.o -o $@ -Map kernel.map.pre
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	$(OBJDUMP) -t $(arch_objects) $(genarch_objects) $(objects) $(test_objects) > kernel.objdump
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	$(OBJDUMP) -t $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS) > kernel.objdump
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	tools/genmap.py kernel.map.pre kernel.objdump generic/src/debug/real_map.bin
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	tools/genmap.py kernel.map.pre kernel.objdump generic/src/debug/real_map.bin
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generic/src/debug/real_map.o: generic/src/debug/real_map.bin
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generic/src/debug/real_map.o: generic/src/debug/real_map.bin
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	$(OBJCOPY) -I binary -O $(BFD_NAME) -B $(BFD_ARCH) --prefix-sections=symtab $< $@
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	$(OBJCOPY) -I binary -O $(BFD_NAME) -B $(BFD_ARCH) --prefix-sections=symtab $< $@
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kernel.bin: $(arch_objects) $(genarch_objects) $(objects) $(test_objects) arch/$(ARCH)/_link.ld generic/src/debug/real_map.o
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kernel.bin: depend arch/$(ARCH)/_link.ld $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS) generic/src/debug/real_map.o
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	$(LD) -T arch/$(ARCH)/_link.ld $(LFLAGS) $(arch_objects) $(genarch_objects) $(objects) $(test_objects) generic/src/debug/real_map.o -o $@ -Map kernel.map
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	$(LD) -T arch/$(ARCH)/_link.ld $(LFLAGS) $(ARCH_OBJECTS) $(GENARCH_OBJECTS) $(GENERIC_OBJECTS) generic/src/debug/real_map.o -o $@ -Map kernel.map
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%.o: %.S
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%.o: %.S
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	$(CC) $(ASFLAGS) $(CFLAGS) -c $< -o $@
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	$(CC) $(ASFLAGS) $(CFLAGS) -c $< -o $@
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%.o: %.s
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%.o: %.s
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	$(AS) $(ASFLAGS) $< -o $@
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	$(AS) $(ASFLAGS) $< -o $@
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%.o: %.c
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%.o: %.c
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	$(CC) $(CFLAGS) -c $< -o $@
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	$(CC) $(CFLAGS) -c $< -o $@
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KS=`cat kernel.bin | wc -c`
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boot:
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	$(MAKE) -C arch/$(ARCH)/boot build KERNEL_SIZE=$(KS)
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