diff options
Diffstat (limited to 'mach/Machrules')
| -rw-r--r-- | mach/Machrules | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/mach/Machrules b/mach/Machrules new file mode 100644 index 0000000000..4f91d9bab7 --- /dev/null +++ b/mach/Machrules @@ -0,0 +1,212 @@ +# Rules for MiG interfaces that want to go into the C library. + +# Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. +# This file is part of the GNU C Library. + +# The GNU C Library is free software; you can redistribute it and/or +# modify it under the terms of the GNU Library General Public License +# as published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. + +# The GNU C Library 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 +# Library General Public License for more details. + +# You should have received a copy of the GNU Library General Public +# License along with the GNU C Library; see the file COPYING.LIB. If +# not, write to the Free Software Foundation, Inc., 675 Mass Ave, +# Cambridge, MA 02139, USA. + +# Makefiles may define these variable before including this file: +# user-interfaces Names of interfaces to put user stubs in for. +# server-interfaces Names of interfaces to put server stubs in for. +# interface-library Name of interface library to build and install. +# This file sets: +# interface-headers Names of generated interface header files. +# interface-routines Names of generated interface routines. +# All user stubs are put in individual files, prefixed with RPC_; header +# for both __ and non-__ names is put in foo.h. Server interfaces are +# written to foo_server.c and foo_server.h; the server functions are called +# _S_rpcname. + +# Includers can also add to or modify `migdefines' to set MiG flags. + +all: + +# Make sure no value comes from the environment, since we append to it. +# This is done also in ../Rules, but we append to the value before +# including Rules, which changes the origin. +ifneq "$(findstring env,$(origin generated))" "" +generated := +endif + + +include ../Makeconfig + +ifndef MIG +MIG = mig +endif +MIGFLAGS = -DMACH_IPC_COMPAT=0 -DSTANDALONE -DTypeCheck=0 \ + $(+includes) $(migdefines) -subrprefix __ + +.SUFFIXES: .defs # Just to set specified_rule_matched. + +define nl # This is needed by *.ir. + + +endef +ifdef user-interfaces +*.ir := $(addprefix $(objpfx),$(foreach if,$(user-interfaces),$(if).ir)) +ifndef inhibit_interface_rules +include $(*.ir) +endif +ifneq "$(*.ir)" "$(wildcard $(*.ir))" +# If any .ir file is missing, we will be unable to make all the deps. +no_deps=t +endif +generated += $(*.ir:$(objpfx)%=%) +endif + + +# %.ir defines a variable `%-calls', which lists the RPCs defined by +# %.defs, and a rule to build $(%-calls:%=RPC_$(%-userprefix)%.c) from +# %.defs, where $(%-userprefix) is the user prefix given in %.defs. We use +# the kludgificacious method of defining a pattern rule to build files +# matching patterns we are pretty damn sure will only match the particular +# files we have in mind. To be so damn sure, we use the silly names +# RPC_*.c and the pattern R%C_*.c because using __*.c and _%*.c (or any +# other useful pattern) causes the rule for `host_info' to also match +# `xxx_host_info', and analogous lossage. +# +# While we're at it, we figure out the imports used by %.defs and give them +# as dependencies of the object files for the generated RPC_*.c files. +# +# Depend on %.h just so they will be built from %.uh in the +# makefile-rebuilding run which builds %.ir; otherwise, %.uh is built as an +# intermediate in order to make %.ir and then removed before re-exec, when +# %.uh is built all over again to build %.h. +$(objpfx)%.ir: $(objpfx)%.uh $(objpfx)%.h + (awk "NF == 4 && (\$$2 == \"Routine\" || \$$2 == \"SimpleRoutine\")\ + { printf \"$*-calls += %s\\n\", \$$3 } \ + /^#include/ { printf \"$*-imports += %s\\n\", \$$2 }" $< ;\ + echo '$$($*-calls:%=$$(objpfx)R\%C_%.c): $$(objpfx)$*.ustamp ;';\ + echo '$$($*-calls:%=$$(objpfx)RPC_%.o): $$($*-imports:<%>=%)' ;\ + ) > $@-new + mv $@-new $@ +vpath Machrules ../mach # Find ourselves. + +ifndef transform-user-stub-output +transform-user-stub-output = tmp +define transform-user-stub +echo "weak_alias (__$$call, $$call)" >> $(objpfx)tmp_$${call}.c; +endef +endif + +# Not an implicit rule so the stamps are never removed as intermediates! +$(patsubst %,$(objpfx)%.ustamp,$(user-interfaces)): $(objpfx)%.ustamp: %.defs + $(MIG) $< $(MIGFLAGS) $(user-MIGFLAGS) \ + -prefix __ -i $(objpfx)tmp_ \ + -server /dev/null -user /dev/null -header /dev/null + for call in $($*-calls); do \ + $(transform-user-stub) \ + ../move-if-change $(objpfx)$(transform-user-stub-output)_$${call}.c \ + $(objpfx)RPC_$${call}.c; \ + done + touch $@ + +# Look for the server stub files where they will be written. +vpath %_server.c $(addprefix $(objpfx),$(sort $(dir $(server-interfaces)))) + +# Build the server stubs in $(objdir). +$(objpfx)%_server.c $(objpfx)%_server.h: %.defs + $(MIG) $< $(MIGFLAGS) $(server-MIGFLAGS) \ + -prefix _S_ \ + -user /dev/null -header /dev/null \ + -server $(@:.h=.c) -sheader $(@:.c=.h) + +# To get header files that declare both the straight and __ functions, +# we generate two files and paste them together. +$(objpfx)%.uh: %.defs; $(mig.uh) +define mig.uh +$(make-target-directory) +$(MIG) $< $(MIGFLAGS) \ + -header $@ -server /dev/null -user /dev/null +endef +$(objpfx)%.__h: %.defs; $(mig.__h) +define mig.__h +$(make-target-directory) +$(MIG) $< $(MIGFLAGS) -prefix __ \ + -header $@ -server /dev/null -user /dev/null +endef + +$(objpfx)%.h: $(objpfx)%.__h $(objpfx)%.uh +# The last line of foo.__h is "#endif _foo_user_". +# The first two lines of foo.uh are "#ifndef _foo_user_"/"#define _foo_user_". + (sed -e '$$d' $<; sed -e '1,2d' $(word 2,$^)) > $@-new + mv $@-new $@ + +interface-routines := $(foreach if,$(user-interfaces), \ + $(addprefix RPC_,$($(if)-calls))) \ + $(server-interfaces:%=%_server) +interface-headers := $(user-interfaces:%=%.h) \ + $(server-interfaces:%=%_server.h) + +# Remove the generated user stub source and header files, +# and don't distribute them. +mach-generated = $(interface-routines:%=%.c) \ + $(foreach h,$(interface-headers:%.h=%),$h.h $h.uh $h.__h) +generated += $(mach-generated) + +# These are needed to generate the dependencies. +before-compile += $(interface-headers:%=$(objpfx)%) + +# Don't let these be intermediate files and get removed. +$(foreach h,$(interface-headers:%.h=$(objpfx)%),$h.h $h.__h $h.uh) : +$(interface-routines:%=$(objpfx)%.c) : + +# Convenient target to generate all the headers. +.PHONY: interface-headers +interface-headers: $(interface-headers) + +# Don't automatically generate dependencies for the sources we generate. +# There are likely to be a whole lot of them, and we know their +# dependencies ahead of time anyway because they're boilerplate. +omit-deps += $(interface-routines) + +# Specify the static dependencies of the generated files. +$(foreach if,$(user-interfaces),$($(if)-calls:%=$(objpfx)RPC_%.o))): \ + mach/boolean.h mach/kern_return.h mach/message.h mach/notify.h \ + mach/mach_types.h mach/mig_errors.h mach/mig_support.h mach/msg_type.h \ + $(..)libc-symbols.h $(objpfx)config.h +$(server-interfaces:%=$(objpfx)%.o): \ + mach/boolean.h mach/kern_return.h mach/message.h mach/mig_errors.h \ + mach/mig_support.h mach/std_types.h +# The MiG-generated sources also depend on the imports in their .defs files. +# These dependencies are generated into the .ir files above. + +# If defined, $(interface-library) is `libNAME.a'. It is to be a library +# containing all the MiG-generated functions for the specified interfaces. + +ifdef interface-library + +$(interface-library)-objs := $(interface-routines:%=%.o) + +install-lib += $(interface-library) +extra-objs += $($(interface-library)-objs) + +$(objpfx)$(interface-library): $(addprefix $(objpfx),\ + $($(interface-library)-objs)) +ifdef objdir + cd $(objdir); $(AR) cru$(verbose) $(@:$(objpfx)%=%) $(^:$(objpfx)%=%) +else + $(AR) cru$(verbose) $@ $^ +endif + $(RANLIB) $@ + +lib-noranlib: $(objpfx)$(interface-library) + +mostlyclean: + -rm -f $(objpfx)$(interface-library) + +endif |