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#
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#
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# Copyright (C) 2005 Martin Decky
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# Copyright (C) 2005 Martin Decky
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# All rights reserved.
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# All rights reserved.
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#
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#
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# Redistribution and use in source and binary forms, with or without
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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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# modification, are permitted provided that the following conditions
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# are met:
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# are met:
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#
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#
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# - Redistributions of source code must retain the above copyright
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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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#   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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# - 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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#   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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#   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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# - 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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#   derived from this software without specific prior written permission.
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#
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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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# 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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# 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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# 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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# 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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# 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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# 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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# 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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# 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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# (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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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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#
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## Make some default assumptions
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## Make some default assumptions
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#
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#
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ifndef ARCH
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ifndef ARCH
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	ARCH = ia32
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	ARCH = ia32
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endif
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endif
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## Common compiler flags
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SOURCES = \
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	libc \
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#
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	init
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DEFS = -DARCH=$(ARCH)
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CLEANS := $(addsuffix .clean,$(SOURCES))
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CFLAGS = -fno-builtin -fomit-frame-pointer -Werror-implicit-function-declaration -Wmissing-prototypes -Werror -O3 -nostdlib -nostdinc -Ilibc/include
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LFLAGS = -M
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AFLAGS =
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## Setup platform configuration
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.PHONY: all $(SOURCES) $(CLEANS) clean
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#
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include libc/arch/$(ARCH)/Makefile.inc
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all: $(SOURCES)
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## Toolchain configuration
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clean: $(CLEANS)
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#
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	find $(SOURCES) -name '*.o' -follow -exec rm \{\} \;
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ifeq ($(COMPILER),native)
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	CC = gcc
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$(CLEANS):
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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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	$(MAKE) -C $(basename $@) clean ARCH=$(ARCH)
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endif
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.PHONY: all clean
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all: init
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clean:
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	-rm -f init init.map _link.ld *.o
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	$(MAKE) -C libc clean ARCH=$(ARCH)
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libc/libc.a:
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$(SOURCES):
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	$(MAKE) -C libc all ARCH=$(ARCH)
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	$(MAKE) -C $@ all ARCH=$(ARCH)
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_link.ld: _link.ld.in
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	$(CC) $(DEFS) $(CFLAGS) -E -x c $< | grep -v "^\#" > $@
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init: init.o libc/libc.a _link.ld
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	$(LD) -T _link.ld $(LFLAGS) init.o libc/libc.a -o $@ -Map init.map
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%.o: %.S
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	$(CC) $(DEFS) $(AFLAGS) $(CFLAGS) -D__ASM__ -c $< -o $@
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%.o: %.s
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	$(AS) $(AFLAGS) $< -o $@
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%.o: %.c
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	$(CC) $(DEFS) $(CFLAGS) -c $< -o $@
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