src/simple/Makefile - public/gem5-resources - Git at Google

 # Copyright (c) 2020 ARM Limited
 # All rights reserved.
 #
 # The license below extends only to copyright in the software and shall
 # not be construed as granting a license to any other intellectual
 # property including but not limited to intellectual property relating
 # to a hardware implementation of the functionality of the software
 # licensed hereunder.  You may use the software subject to the license
 # terms below provided that you ensure that this notice is replicated
 # unmodified and in its entirety in all distributions of the software,
 # modified or unmodified, in source code or in binary form.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met: redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer;
 # redistributions in binary form must reproduce the above copyright
 # notice, this list of conditions and the following disclaimer in the
 # documentation and/or other materials provided with the distribution;
 # neither the name of the copyright holders nor the names of its
 # contributors may be used to endorse or promote products derived from
 # this software without specific prior written permission.
 #
 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #

 # Input files for each build type. We whitelist barmetal ones,
 # and blacklist
 BARE_INS = \
   m5_exit \
   m5_checkpoint
 USER_INS = $(basename $(foreach BASE_DIR, . $(ISA), $(foreach IN_EXT, \
   $(IN_EXT_ASM) $(IN_EXT_C) $(IN_EXT_CXX), $(wildcard $(BASE_DIR)/*$(IN_EXT)))))

 # Input values.
 BOOTLOADER_SRC = bootloader/$(ISA)$(IN_EXT_ASM)
 BOOTLOADER_OBJ = $(OUT_DIR)/bootloader$(OBJ_EXT)
 CC = $(PREFIX)gcc
 CXX = $(PREFIX)g++
 GEM5_ROOT = $(CURDIR)/../../../gem5
 M5OP_OBJ = $(GEM5_ROOT)/util/m5/build/$(M5_ISA)/out/libm5.a
 # Common to USER and BARE.
 CFLAGS = $(CCFLAGS) -std=c11
 # Common to C and C++.
 CCFLAGS = \
   -I $(GEM5_ROOT)/include/ \
   -I $(GEM5_ROOT)/util/m5/src/ \
   -O3 \
   -Wall \
   -Werror \
   -Wextra \
   -fno-pie \
   -ggdb3 \
   -no-pie \
   -pedantic \
   -static \
   $(CCFLAGS_ISA)
 # -Wl,--whole-archive allows C++ threads to work with -static.
 # https://stackoverflow.com/questions/35116327/when-g-static-link-pthread-cause-segmentation-fault-why
 LDFLAGS_USER = \
   -lrt \
   -pthread \
   -Wl,--whole-archive \
   -lpthread \
   -Wl,--no-whole-archive
 CCFLAGS_BARE = $(CFLAGS) \
   -T link.ld \
   -Wl,--section-start=.text=0x80000000 \
   -fno-asynchronous-unwind-tables \
   -fno-unwind-tables \
   -nostartfiles \
   -nostdlib
 CFLAGS_USER = $(CFLAGS)
 CXXFLAGS = $(CCFLAGS) -std=c++11
 CXXFLAGS_BARE = $(CXXFLAGS)
 CXXFLAGS_USER = $(CXXFLAGS)
 IN_EXT_ASM = .S
 IN_EXT_C = .c
 IN_EXT_CXX = .cpp
 OUT_DIR_BASE = out
 OUT_DIR = $(OUT_DIR_BASE)/$(ISA)
 OUT_BARE_DIR = $(OUT_DIR)/bare
 OUT_SQUASHFS_DIR = $(OUT_DIR)/squashfs
 OUT_SQUASHFS_EXT = .squashfs
 OUT_USER_DIR = $(OUT_DIR)/user
 OBJ_EXT = .o
 OUT_EXT = .out

 ifeq ($(ISA),)
 ISA = $(shell uname -m)
 endif

 ifeq ($(ISA),x86_64)
 CCFLAGS_ISA = -msse3
 M5_ISA = x86
 PREFIX =
 else
 M5_ISA = $(ISA)
 ifeq ($(ISA),aarch64)
 CCFLAGS_ISA = -Xassembler -march=all
 # Input files just for this ISA.
 ISA_BARE_INS = semihost_exit
 # Exclude baremetal only builds.
 USER_INS := $(filter-out $(ISA)/semihost_exit, $(USER_INS))
 # Commented out for now because otherwise adds an
 # empty entry to the target list.
 #ISA_USER_INS =
 PREFIX = aarch64-linux-gnu-
 else
 ifeq ($(ISA),arm)
 PREFIX = arm-linux-gnueabihf-
 else
 ifeq ($(ISA),riscv)
 PREFIX = riscv64-linux-gnu-
 # riscv does not have an util/m5/m5op_
 M5OP_OBJ =
 USER_INS := $(filter-out ./m5_checkpoint ./m5_exit, $(USER_INS))
 else
 ifeq ($(ISA),sparc64)
 PREFIX = sparc64-linux-
 # sparc64 does not have an util/m5/m5op_
 M5OP_OBJ =
 # At present sparc64 only compiles the pthread binaries. Other binaries have
 # not been tested.
 USER_INS := $(filter-out ./m5_checkpoint \
                          ./m5_exit \
                          ./chdir_print \
                          ./hello \
                          ./hellp_cpp \
                          ./m5_exit_addr \
                          ./page_access_wrap \
                          ./stack_print \
                          ./std_thread, $(USER_INS))
 else
 $(error unknown isa $(ISA))
 endif
 endif
 endif
 endif
 endif

 # Calculated values.
 BARE_OUTS = $(addprefix $(OUT_BARE_DIR)/, $(addsuffix $(OUT_EXT), $(BARE_INS) $(addprefix $(ISA)/,$(ISA_BARE_INS))))
 SQUASHFS_OUTS = $(addprefix $(OUT_USER_DIR)/, $(addsuffix $(OUT_EXT), $(USER_INS)))
 USER_OUTS = $(addprefix $(OUT_USER_DIR)/, $(addsuffix $(OUT_EXT), $(USER_INS)))

 .PHONY: all bare clean mkdir user

 user: mkdir-user $(USER_OUTS)

 bare: mkdir-bare $(BARE_OUTS)

 all: bare user

 user-show:
 	@echo $(USER_OUTS)

 $(OUT_BARE_DIR)/%$(OUT_EXT): %$(IN_EXT_ASM) $(M5OP_OBJ)
 	$(CC) $(CCFLAGS_BARE) -o '$@' $^

 $(OUT_USER_DIR)/%$(OUT_EXT): %$(IN_EXT_ASM) $(M5OP_OBJ)
 	$(CC) $(CFLAGS_USER) -o '$@' $^

 $(OUT_BARE_DIR)/%$(OUT_EXT): %$(IN_EXT_C) $(M5OP_OBJ) $(BOOTLOADER_OBJ)
 	$(CC) $(CCFLAGS_BARE) -o '$@' $^

 $(OUT_USER_DIR)/%$(OUT_EXT): %$(IN_EXT_C) $(M5OP_OBJ)
 	$(CC) $(CFLAGS_USER) -o '$@' $^ $(LDFLAGS_USER)

 $(OUT_SQUASHFS_DIR)/%$(OUT_SQUASHFS_EXT): $(OUT_USER_DIR)/%$(OUT_EXT)
 	@# Create dev so that the kernel can automount CONFIG_DEVTMPFS=y.
 	mkdir -p '$(basename $@)/sbin' '$(basename $@)/dev'
 	cp '$<' '$(basename $@)/sbin/init'
 	@# Existing squashfs files don't get updated otherwise.
 	rm -f '$@'
 	mksquashfs '$(basename $@)' '$@'

 $(OUT_BARE_DIR)/%$(OUT_EXT): %$(IN_EXT_CXX) $(M5OP_OBJ) $(BOOTLOADER_OBJ)
 	$(CXX) $(CXXFLAGS_BARE) -o '$@' $^

 $(OUT_USER_DIR)/%$(OUT_EXT): %$(IN_EXT_CXX) $(M5OP_OBJ)
 	$(CXX) $(CXXFLAGS_USER) -o '$@' $^ $(LDFLAGS_USER)

 $(BOOTLOADER_OBJ): $(BOOTLOADER_SRC)
 	$(CC) $(CFLAGS_USER) -c -o '$@' '$<'

 $(M5OP_OBJ):
 	cd $(GEM5_ROOT) && scons -C util/m5 build/$(M5_ISA)/out/m5

 clean:
 	rm -rf '$(OUT_DIR_BASE)'

 mkdir-bare:
 	mkdir -p '$(OUT_BARE_DIR)/$(ISA)'

 mkdir-user:
 	mkdir -p '$(OUT_USER_DIR)/$(ISA)'
	# Copyright (c) 2020 ARM Limited
	# All rights reserved.
	#
	# The license below extends only to copyright in the software and shall
	# not be construed as granting a license to any other intellectual
	# property including but not limited to intellectual property relating
	# to a hardware implementation of the functionality of the software
	# licensed hereunder. You may use the software subject to the license
	# terms below provided that you ensure that this notice is replicated
	# unmodified and in its entirety in all distributions of the software,
	# modified or unmodified, in source code or in binary form.
	#
	# Redistribution and use in source and binary forms, with or without
	# modification, are permitted provided that the following conditions are
	# met: redistributions of source code must retain the above copyright
	# notice, this list of conditions and the following disclaimer;
	# redistributions in binary form must reproduce the above copyright
	# notice, this list of conditions and the following disclaimer in the
	# documentation and/or other materials provided with the distribution;
	# neither the name of the copyright holders nor the names of its
	# contributors may be used to endorse or promote products derived from
	# this software without specific prior written permission.
	#
	# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	#

	# Input files for each build type. We whitelist barmetal ones,
	# and blacklist
	BARE_INS = \
	m5_exit \
	m5_checkpoint
	USER_INS = $(basename $(foreach BASE_DIR, . $(ISA), $(foreach IN_EXT, \
	$(IN_EXT_ASM) $(IN_EXT_C) $(IN_EXT_CXX), $(wildcard $(BASE_DIR)/*$(IN_EXT)))))

	# Input values.
	BOOTLOADER_SRC = bootloader/$(ISA)$(IN_EXT_ASM)
	BOOTLOADER_OBJ = $(OUT_DIR)/bootloader$(OBJ_EXT)
	CC = $(PREFIX)gcc
	CXX = $(PREFIX)g++
	GEM5_ROOT = $(CURDIR)/../../../gem5
	M5OP_OBJ = $(GEM5_ROOT)/util/m5/build/$(M5_ISA)/out/libm5.a
	# Common to USER and BARE.
	CFLAGS = $(CCFLAGS) -std=c11
	# Common to C and C++.
	CCFLAGS = \
	-I $(GEM5_ROOT)/include/ \
	-I $(GEM5_ROOT)/util/m5/src/ \
	-O3 \
	-Wall \
	-Werror \
	-Wextra \
	-fno-pie \
	-ggdb3 \
	-no-pie \
	-pedantic \
	-static \
	$(CCFLAGS_ISA)
	# -Wl,--whole-archive allows C++ threads to work with -static.
	# https://stackoverflow.com/questions/35116327/when-g-static-link-pthread-cause-segmentation-fault-why
	LDFLAGS_USER = \
	-lrt \
	-pthread \
	-Wl,--whole-archive \
	-lpthread \
	-Wl,--no-whole-archive
	CCFLAGS_BARE = $(CFLAGS) \
	-T link.ld \
	-Wl,--section-start=.text=0x80000000 \
	-fno-asynchronous-unwind-tables \
	-fno-unwind-tables \
	-nostartfiles \
	-nostdlib
	CFLAGS_USER = $(CFLAGS)
	CXXFLAGS = $(CCFLAGS) -std=c++11
	CXXFLAGS_BARE = $(CXXFLAGS)
	CXXFLAGS_USER = $(CXXFLAGS)
	IN_EXT_ASM = .S
	IN_EXT_C = .c
	IN_EXT_CXX = .cpp
	OUT_DIR_BASE = out
	OUT_DIR = $(OUT_DIR_BASE)/$(ISA)
	OUT_BARE_DIR = $(OUT_DIR)/bare
	OUT_SQUASHFS_DIR = $(OUT_DIR)/squashfs
	OUT_SQUASHFS_EXT = .squashfs
	OUT_USER_DIR = $(OUT_DIR)/user
	OBJ_EXT = .o
	OUT_EXT = .out

	ifeq ($(ISA),)
	ISA = $(shell uname -m)
	endif

	ifeq ($(ISA),x86_64)
	CCFLAGS_ISA = -msse3
	M5_ISA = x86
	PREFIX =
	else
	M5_ISA = $(ISA)
	ifeq ($(ISA),aarch64)
	CCFLAGS_ISA = -Xassembler -march=all
	# Input files just for this ISA.
	ISA_BARE_INS = semihost_exit
	# Exclude baremetal only builds.
	USER_INS := $(filter-out $(ISA)/semihost_exit, $(USER_INS))
	# Commented out for now because otherwise adds an
	# empty entry to the target list.
	#ISA_USER_INS =
	PREFIX = aarch64-linux-gnu-
	else
	ifeq ($(ISA),arm)
	PREFIX = arm-linux-gnueabihf-
	else
	ifeq ($(ISA),riscv)
	PREFIX = riscv64-linux-gnu-
	# riscv does not have an util/m5/m5op_
	M5OP_OBJ =
	USER_INS := $(filter-out ./m5_checkpoint ./m5_exit, $(USER_INS))
	else
	ifeq ($(ISA),sparc64)
	PREFIX = sparc64-linux-
	# sparc64 does not have an util/m5/m5op_
	M5OP_OBJ =
	# At present sparc64 only compiles the pthread binaries. Other binaries have
	# not been tested.
	USER_INS := $(filter-out ./m5_checkpoint \
	./m5_exit \
	./chdir_print \
	./hello \
	./hellp_cpp \
	./m5_exit_addr \
	./page_access_wrap \
	./stack_print \
	./std_thread, $(USER_INS))
	else
	$(error unknown isa $(ISA))
	endif
	endif
	endif
	endif
	endif

	# Calculated values.
	BARE_OUTS = $(addprefix $(OUT_BARE_DIR)/, $(addsuffix $(OUT_EXT), $(BARE_INS) $(addprefix $(ISA)/,$(ISA_BARE_INS))))
	SQUASHFS_OUTS = $(addprefix $(OUT_USER_DIR)/, $(addsuffix $(OUT_EXT), $(USER_INS)))
	USER_OUTS = $(addprefix $(OUT_USER_DIR)/, $(addsuffix $(OUT_EXT), $(USER_INS)))

	.PHONY: all bare clean mkdir user

	user: mkdir-user $(USER_OUTS)

	bare: mkdir-bare $(BARE_OUTS)

	all: bare user

	user-show:
	@echo $(USER_OUTS)

	$(OUT_BARE_DIR)/%$(OUT_EXT): %$(IN_EXT_ASM) $(M5OP_OBJ)
	$(CC) $(CCFLAGS_BARE) -o '$@' $^

	$(OUT_USER_DIR)/%$(OUT_EXT): %$(IN_EXT_ASM) $(M5OP_OBJ)
	$(CC) $(CFLAGS_USER) -o '$@' $^

	$(OUT_BARE_DIR)/%$(OUT_EXT): %$(IN_EXT_C) $(M5OP_OBJ) $(BOOTLOADER_OBJ)
	$(CC) $(CCFLAGS_BARE) -o '$@' $^

	$(OUT_USER_DIR)/%$(OUT_EXT): %$(IN_EXT_C) $(M5OP_OBJ)
	$(CC) $(CFLAGS_USER) -o '$@' $^ $(LDFLAGS_USER)

	$(OUT_SQUASHFS_DIR)/%$(OUT_SQUASHFS_EXT): $(OUT_USER_DIR)/%$(OUT_EXT)
	@# Create dev so that the kernel can automount CONFIG_DEVTMPFS=y.
	mkdir -p '$(basename $@)/sbin' '$(basename $@)/dev'
	cp '$<' '$(basename $@)/sbin/init'
	@# Existing squashfs files don't get updated otherwise.
	rm -f '$@'
	mksquashfs '$(basename $@)' '$@'

	$(OUT_BARE_DIR)/%$(OUT_EXT): %$(IN_EXT_CXX) $(M5OP_OBJ) $(BOOTLOADER_OBJ)
	$(CXX) $(CXXFLAGS_BARE) -o '$@' $^

	$(OUT_USER_DIR)/%$(OUT_EXT): %$(IN_EXT_CXX) $(M5OP_OBJ)
	$(CXX) $(CXXFLAGS_USER) -o '$@' $^ $(LDFLAGS_USER)

	$(BOOTLOADER_OBJ): $(BOOTLOADER_SRC)
	$(CC) $(CFLAGS_USER) -c -o '$@' '$<'

	$(M5OP_OBJ):
	cd $(GEM5_ROOT) && scons -C util/m5 build/$(M5_ISA)/out/m5

	clean:
	rm -rf '$(OUT_DIR_BASE)'

	mkdir-bare:
	mkdir -p '$(OUT_BARE_DIR)/$(ISA)'

	mkdir-user:
	mkdir -p '$(OUT_USER_DIR)/$(ISA)'