# Makefile fragment for common parts of all simulators.
# Copyright 1997-2022 Free Software Foundation, Inc.
# Contributed by Cygnus Support.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# This Makefile fragment consists of two separate parts.
# They are merged into the final Makefile at points denoted by
# "## COMMON_PRE_CONFIG_FRAG" and "## COMMON_POST_CONFIG_FRAG".
#
# The target Makefile should look like:
#
#># Copyright blah blah
#>
#>## COMMON_PRE_CONFIG_FRAG
#>
#># Any overrides necessary for the SIM_FOO config vars.
#>SIM_FOO = ...
#>
#>## COMMON_POST_CONFIG_FRAG
#>
#># Rules to build target specific .o's.

## COMMON_PRE_CONFIG_FRAG

srcdir = @abs_srcdir@
VPATH = $(srcdir):$(srccom)
srccom = $(srcdir)/../common
srcroot = $(srcdir)/../..
srcsim = $(srcdir)/..

@SIM_COMMON_BUILD_FALSE@config.status = config.status
@SIM_COMMON_BUILD_TRUE@config.status = ../config.status

# Settings from top-level configure.
include ../arch-subdir.mk

include $(srcroot)/gdb/silent-rules.mk

ifeq ($(V),0)
ECHO_STAMP = @echo "  GEN   "
ECHO_IGEN  = @echo "  IGEN   $(<F)";
else
ECHO_STAMP = @:
endif

# Helper code from gnulib.
GNULIB_PARENT_DIR = ../..
include $(GNULIB_PARENT_DIR)/gnulib/Makefile.gnulib.inc

# This can be referenced by the gettext configuration code.
top_builddir = ..

SHELL = @SHELL@

SIM_BITSIZE = @sim_bitsize@
SIM_FLOAT = @sim_float@
SIM_WARN_CFLAGS = $(WARN_CFLAGS)
SIM_WERROR_CFLAGS = $(WERROR_CFLAGS)

# Dependency tracking information.
depcomp = $(SHELL) $(srcroot)/depcomp

# Note that these are overridden by GNU make-specific code below if
# GNU make is used.  The overrides implement dependency tracking.
COMPILE.pre = $(CC) $(C_DIALECT)
COMPILE.post = -c -o $@
COMPILE = $(ECHO_CC) $(COMPILE.pre) $(ALL_CFLAGS) $(COMPILE.post)
POSTCOMPILE = @true

# igen leaks memory, and therefore makes AddressSanitizer unhappy.  Disable
# leak detection while running it.
IGEN = ../igen/igen$(EXEEXT)
IGEN_RUN = ASAN_OPTIONS=detect_leaks=0 $(IGEN)

# Each simulator's Makefile.in defines one or more of these variables
# to override our settings as necessary.  There is no need to define these
# in the simulator's Makefile.in if one is using the default value.  In fact
# it's preferable not to.

# List of object files, less common parts.
SIM_OBJS =
# List of extra dependencies.
# Generally this consists of simulator specific files included by sim-main.h.
SIM_EXTRA_DEPS =
# List of flags to always pass to $(CC).
SIM_EXTRA_CFLAGS =
# List of extra libraries to link with.
SIM_EXTRA_LIBS =
# List of main object files for `run'.
SIM_RUN_OBJS = nrun.o
# Dependency of `clean' to clean any extra files.
SIM_EXTRA_CLEAN =
# Likewise `distclean'
SIM_EXTRA_DISTCLEAN =

# Every time a new general purpose source file was added every target's
# Makefile.in needed to be updated to include the file in SIM_OBJS.
# This doesn't scale.
# This variable specifies all the generic stuff common to the newer simulators.
# Things like sim-reason.o can't go here as the cpu may provide its own
# (though hopefully in time that won't be so).  Things like sim-bits.o can go
# here.  Some files are used by all simulators (e.g. callback.o).
# Those files are specified in LIB_OBJS below.

SIM_COMMON_HW_OBJS = \
	hw-alloc.o \
	hw-base.o \
	hw-device.o \
	hw-events.o \
	hw-handles.o \
	hw-instances.o \
	hw-ports.o \
	hw-properties.o \
	hw-tree.o \
	sim-hw.o \

SIM_NEW_COMMON_OBJS = \
	sim-arange.o \
	sim-bits.o \
	sim-close.o \
	sim-command.o \
	sim-config.o \
	sim-core.o \
	sim-cpu.o \
	sim-endian.o \
	sim-engine.o \
	sim-events.o \
	sim-fpu.o \
	sim-hload.o \
	sim-hrw.o \
	sim-io.o \
	sim-info.o \
	sim-memopt.o \
	sim-model.o \
	sim-module.o \
	sim-options.o \
	sim-profile.o \
	sim-reason.o \
	sim-reg.o \
	sim-signal.o \
	sim-stop.o \
	sim-syscall.o \
	sim-trace.o \
	sim-utils.o \
	sim-watch.o \
	\
	$(SIM_HW_OBJS) \

## End COMMON_PRE_CONFIG_FRAG

## COMMON_POST_CONFIG_FRAG

CONFIG_CFLAGS = \
	-DHAVE_CONFIG_H \
	$(SIM_BITSIZE) \
	$(SIM_FLOAT) \
	$(SIM_HW_CFLAGS) \
	$(SIM_INLINE) \
	$(SIM_WARN_CFLAGS) \
	$(SIM_WERROR_CFLAGS)
CSEARCH = -I. -I$(srcdir) -I$(srccom) \
  -I$(srcroot)/include \
  -I../../bfd -I$(srcroot)/bfd \
  -I$(srcroot)/opcodes \
  -I../..
ALL_CFLAGS = $(CONFIG_CFLAGS) $(CSEARCH) $(INCGNU) $(SIM_EXTRA_CFLAGS) $(CFLAGS)
BUILD_CFLAGS = $(CFLAGS_FOR_BUILD) $(CSEARCH)

COMMON_DEP_CFLAGS = $(CONFIG_CFLAGS) $(CSEARCH) $(SIM_EXTRA_CFLAGS)

SIM_HW_DEVICES = cfi core pal glue $(SIM_EXTRA_HW_DEVICES)

LIBIBERTY_LIB = ../../libiberty/libiberty.a
BFD_LIB = ../../bfd/libbfd.la
OPCODES_LIB = ../../opcodes/libopcodes.la
LIBDEPS = $(BFD_LIB) $(OPCODES_LIB) $(LIBIBERTY_LIB)
EXTRA_LIBS = $(BFD_LIB) $(OPCODES_LIB) $(LIBIBERTY_LIB) \
	$(COMMON_LIBS) $(SIM_EXTRA_LIBS) $(LIBGNU) $(LIBGNU_EXTRA_LIBS)

COMMON_OBJS_NAMES = \
	callback.o \
	portability.o \
	sim-load.o \
	syscall.o \
	target-newlib-errno.o \
	target-newlib-open.o \
	target-newlib-signal.o \
	target-newlib-syscall.o \
	version.o
COMMON_OBJS = $(COMMON_OBJS_NAMES:%=../common/%)

LIB_OBJS = modules.o $(COMMON_OBJS) $(SIM_OBJS)

COMPILE_FOR_BUILD = $(CC_FOR_BUILD) $(BUILD_CFLAGS)
LINK_FOR_BUILD = $(CC_FOR_BUILD) $(BUILD_CFLAGS) $(LDFLAGS_FOR_BUILD) -o $@

RUNTESTFLAGS =

all: libsim.a run$(EXEEXT)

libsim.a: $(LIB_OBJS)
	$(SILENCE) rm -f libsim.a
	$(ECHO_AR) $(AR) $(AR_FLAGS) libsim.a $(LIB_OBJS)
	$(ECHO_RANLIB) $(RANLIB) libsim.a

run$(EXEEXT): $(SIM_RUN_OBJS) libsim.a $(LIBDEPS)
	$(ECHO_CCLD) $(LIBTOOL) $(AM_V_lt) --tag=CC --mode=link \
	  $(CC) $(ALL_CFLAGS) $(LDFLAGS) -o run$(EXEEXT) \
	  $(SIM_RUN_OBJS) libsim.a $(EXTRA_LIBS)

#
# Dependency tracking.  Most of this is conditional on GNU Make being
# found by configure; if GNU Make is not found, we fall back to a
# simpler scheme.
#

ifeq ($(DEPMODE),depmode=gcc3)
# Note that we put the dependencies into a .Tpo file, then move them
# into place if the compile succeeds.  We need this because gcc does
# not atomically write the dependency output file.
override COMPILE.post = -c -o $@ -MT $@ -MMD -MP \
	-MF $(DEPDIR)/$(basename $(@F)).Tpo
override POSTCOMPILE = @mv $(DEPDIR)/$(basename $(@F)).Tpo \
	$(DEPDIR)/$(basename $(@F)).Po
else
override COMPILE.pre = source='$<' object='$@' libtool=no \
	DEPDIR=$(DEPDIR) $(DEPMODE) $(depcomp) $(CC)
# depcomp handles atomicity for us, so we don't need a postcompile
# step.
override POSTCOMPILE =
endif

all_object_files = $(LIB_OBJS) $(SIM_RUN_OBJS)
generated_files = \
	$(SIM_EXTRA_DEPS) \
	hw-config.h \
	modules.c

# Ensure that generated files are created early.  Use order-only
# dependencies if available.  They require GNU make 3.80 or newer,
# and the .VARIABLES variable was introduced at the same time.
ifdef .VARIABLES
$(all_object_files): | $(generated_files)
else
$(all_object_files) : $(generated_files)
endif

# Dependencies.
-include $(patsubst %.o, $(DEPDIR)/%.Po, $(all_object_files))

# FIXME This is one very simple-minded way of generating the file hw-config.h
hw-config.h: stamp-hw ; @true
stamp-hw: Makefile.in $(srccom)/Make-common.in $(config.status) Makefile
	$(ECHO_STAMP) hw-config.h
	$(SILENCE) ( \
	sim_hw="$(SIM_HW_DEVICES)" ; \
	echo "/* generated by Makefile */" ; \
	printf "extern const struct hw_descriptor dv_%s_descriptor[];\n" $$sim_hw ; \
	echo "const struct hw_descriptor * const hw_descriptors[] = {" ; \
	printf "  dv_%s_descriptor,\n" $$sim_hw ; \
	echo "  NULL," ; \
	echo "};" \
	) > tmp-hw.h
	$(SILENCE) $(SHELL) $(srcroot)/move-if-change tmp-hw.h hw-config.h
	$(SILENCE) touch $@

test-hw-events: $(srccom)/hw-events.c libsim.a
	$(ECHO_CCLD) $(LIBTOOL) $(AM_V_lt) --tag=CC --mode=link \
		$(CC) $(ALL_CFLAGS) -DMAIN -o test-hw-events$(EXEEXT) \
		$(srccom)/hw-events.c libsim.a $(EXTRA_LIBS)

# See sim_pre_argv_init and sim_module_install in sim-module.c for more details.
modules.c: stamp-modules ; @true
stamp-modules: Makefile $(SIM_OBJS:.o=.c)
	$(ECHO_STAMP) modules.c
	$(SILENCE) LANG=C ; export LANG ; \
	LC_ALL=C ; export LC_ALL ; \
	sed -n -e '/^sim_install_/{s/^\(sim_install_[a-z_0-9A-Z]*\).*/\1/;p}' $^ | sort >$@.l-tmp
	@set -e; (\
	echo '/* Do not modify this file.  */'; \
	echo '/* It is created automatically by the Makefile.  */'; \
	echo '#include "libiberty.h"'; \
	echo '#include "sim-module.h"'; \
	sed -e 's:\(.*\):extern MODULE_INIT_FN \1;:' $@.l-tmp; \
	echo 'MODULE_INSTALL_FN * const sim_modules_detected[] = {'; \
	sed -e 's:\(.*\):  \1,:' $@.l-tmp; \
	echo '};'; \
	echo 'const int sim_modules_detected_len = ARRAY_SIZE (sim_modules_detected);'; \
	) >$@.tmp
	$(SILENCE) $(SHELL) $(srcroot)/move-if-change $@.tmp modules.c
	$(SILENCE) rm -f $@.l-tmp $@.tmp
	$(SILENCE) touch $@

# Support targets.

install:
installdirs:
uninstall:

check:

html:
clean-html:
install-html:

info:
clean-info:
install-info:

pdf:
clean-pdf:
install-pdf:

.NOEXPORT:
MAKEOVERRIDES=

tags etags: TAGS

# Macros like EXTERN_SIM_CORE confuse tags.
# And the sim-n-foo.h files create functions that can't be found either.
TAGS: force
	cd $(srcdir) && \
	etags --regex '/^\([[:lower:]_]+\) (/\1/' --regex '/^\/[*] TAGS: .*/' \
		*.[ch] ../common/*.[ch]

mostlyclean clean: $(SIM_EXTRA_CLEAN)
	rm -f *.[oa] *~ core \
		run$(EXEEXT) libsim.a \
		hw-config.h stamp-hw \
		modules.c stamp-modules \
		tmp-mloop.hin tmp-mloop.h tmp-mloop.cin tmp-mloop.c

distclean maintainer-clean realclean: clean $(SIM_EXTRA_DISTCLEAN)
	rm -f TAGS
	rm -f Makefile config.cache config.log config.status

.c.o:
	$(COMPILE) $<
	$(POSTCOMPILE)

# Dummy target to force execution of dependent targets.
force:

Makefile: Makefile.in $(srccom)/Make-common.in $(config.status)
@SIM_COMMON_BUILD_FALSE@	$(ECHO_GEN) CONFIG_HEADERS= $(SHELL) ./config.status
@SIM_COMMON_BUILD_TRUE@	$(ECHO_GEN) pwd=`pwd` && subdir=`basename "$$pwd"` && cd .. && \
@SIM_COMMON_BUILD_TRUE@		$(SHELL) ./config.status Make-common.sim $$subdir/Makefile.sim $$subdir/Makefile

@SIM_COMMON_BUILD_FALSE@config.status: configure
@SIM_COMMON_BUILD_FALSE@	$(ECHO_GEN) $(SHELL) ./config.status --recheck


# CGEN support

GUILE = `if [ -f ../../guile/libguile/guile ]; then echo ../../guile/libguile/guile; else echo guile ; fi`
CGEN = "$(GUILE) -l $(CGENDIR)/guile.scm -s"
CGENFLAGS = -v
CGEN_CPU_DIR = $(CGENDIR)/cpu

# Most ports use the files here instead of cgen/cpu.
CPU_DIR = $(srcroot)/cpu

CGEN_READ_SCM = $(CGENDIR)/sim.scm
CGEN_ARCH_SCM = $(CGENDIR)/sim-arch.scm
CGEN_CPU_SCM = $(CGENDIR)/sim-cpu.scm $(CGENDIR)/sim-model.scm
CGEN_DECODE_SCM = $(CGENDIR)/sim-decode.scm
CGEN_DESC_SCM = $(CGENDIR)/desc.scm $(CGENDIR)/desc-cpu.scm

# Various choices for which cpu specific files to generate.
# These are passed to cgen.sh in the "extrafiles" argument.
CGEN_CPU_EXTR = /extr/
CGEN_CPU_READ = /read/
CGEN_CPU_WRITE = /write/
CGEN_CPU_SEM = /sem/
CGEN_CPU_SEMSW = /semsw/

CGEN_FLAGS_TO_PASS = \
	CGEN='$(CGEN)' \
	CGENFLAGS="$(CGENFLAGS)"

# We store the generated files in the source directory until we decide to
# ship a Scheme interpreter with gdb/binutils.  Maybe we never will.

cgen-arch: force
	$(SHELL) $(srccom)/cgen.sh arch $(srcdir) \
		$(CGEN) $(CGENDIR) "$(CGENFLAGS)" \
		$(arch) "$(FLAGS)" ignored "$(isa)" $(mach) ignored \
		$(archfile) ignored

cgen-cpu: force
	$(SHELL) $(srccom)/cgen.sh cpu $(srcdir) \
		$(CGEN) $(CGENDIR) "$(CGENFLAGS)" \
		$(arch) "$(FLAGS)" $(cpu) "$(isa)" $(mach) "$(SUFFIX)" \
		$(archfile) "$(EXTRAFILES)"

cgen-defs: force
	$(SHELL) $(srccom)/cgen.sh defs $(srcdir) \
		$(CGEN) $(CGENDIR) "$(CGENFLAGS)" \
		$(arch) "$(FLAGS)" $(cpu) "$(isa)" $(mach) "$(SUFFIX)" \
		$(archfile) ignored

cgen-decode: force
	$(SHELL) $(srccom)/cgen.sh decode $(srcdir) \
		$(CGEN) $(CGENDIR) "$(CGENFLAGS)" \
		$(arch) "$(FLAGS)" $(cpu) "$(isa)" $(mach) "$(SUFFIX)" \
		$(archfile) "$(EXTRAFILES)"

cgen-cpu-decode: force
	$(SHELL) $(srccom)/cgen.sh cpu-decode $(srcdir) \
		$(CGEN) $(CGENDIR) "$(CGENFLAGS)" \
		$(arch) "$(FLAGS)" $(cpu) "$(isa)" $(mach) "$(SUFFIX)" \
		$(archfile) "$(EXTRAFILES)"

cgen-desc: force
	$(SHELL) $(srccom)/cgen.sh desc $(srcdir) \
		$(CGEN) $(CGENDIR) "$(CGENFLAGS)" \
		$(arch) "$(FLAGS)" $(cpu) "$(isa)" $(mach) "$(SUFFIX)" \
		$(archfile) ignored $(opcfile)

## End COMMON_POST_CONFIG_FRAG