mach/Makefile

   1 # Copyright (C) 1991-2016 Free Software Foundation, Inc.
   2 # This file is part of the GNU C Library.
   3
   4 # The GNU C Library is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU Lesser General Public
   6 # License as published by the Free Software Foundation; either
   7 # version 2.1 of the License, or (at your option) any later version.
   8
   9 # The GNU C Library is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 # Lesser General Public License for more details.
  13
  14 # You should have received a copy of the GNU Lesser General Public
  15 # License along with the GNU C Library; if not, see
  16 # <http://www.gnu.org/licenses/>.
  17
  18 subdir := mach
  19
  20 include ../Makeconfig
  21
  22 headers = mach_init.h mach.h mach_error.h mach-shortcuts.h mach/mach_traps.h \
  23           $(interface-headers) mach/mach.h mach/mig_support.h mach/error.h \
  24           $(lock-headers) machine-sp.h
  25 lock = spin-solid spin-lock mutex-init mutex-solid
  26 lock-headers = lock-intern.h machine-lock.h spin-lock.h
  27 routines = $(mach-syscalls) $(mach-shortcuts) \
  28            mach_init mig_strncpy msg \
  29            mig-alloc mig-dealloc mig-reply \
  30            msg-destroy msgserver \
  31            mach_error errstring error_compat errsystems \
  32            devstream setup-thread $(lock)
  33
  34 # The RPC interfaces go in a separate library.
  35 interface-library := libmachuser
  36
  37 # We produce mach_interface.h from mach.defs because there is already a
  38 # <mach/mach.h> that is not the interface header (thanks CMU).
  39 mach-interface-list := $(patsubst mach,mach_interface,$(mach-interface-list))
  40 mach/mach_interface.defs = mach/mach.defs
  41
  42 # Similarly for memory_object_user vs. memory_object
  43 mach-interface-list := $(patsubst memory_object,memory_object_user,\
  44                                   $(mach-interface-list))
  45 mach/memory_object_user.defs = mach/memory_object.defs
  46
  47 user-interfaces := $(addprefix mach/,$(mach-interface-list)     \
  48                                      mach_port mach_host exc    \
  49                     )\
  50                    $(addprefix device/,device device_request)
  51
  52 server-interfaces := mach/exc
  53
  54 # Clear any environment value.
  55 generated =
  56 \f
  57 # Translate GNU names for CPUs into the names used in Mach header files.
  58 mach-machine = $(patsubst powerpc,ppc,$(base-machine))
  59
  60 # Define mach-syscalls and sysno-*.
  61 ifndef inhibit_mach_syscalls
  62 -include $(objpfx)mach-syscalls.mk
  63 endif
  64 $(objpfx)mach-syscalls.mk: syscalls.awk Makefile libc-modules.h
  65 # Go kludges!!!
  66         $(make-target-directory)
  67 # We must use $(CFLAGS) to get -O flags that affect #if's in header files.
  68         echo '#include <mach/syscall_sw.h>' | \
  69         $(CC) $(CFLAGS) $(CPPFLAGS) -E -MD -MP -MF $@-dep -MT $@ \
  70               -x c-header - \
  71               -D_MACH_`echo $(mach-machine) | tr a-z A-Z`_SYSCALL_SW_H_=1 | \
  72         sed -n -e 's/^kernel_trap(\(.*\),\([-0-9]*\),\([0-9]*\))$$/\1 \2 \3/p'\
  73         | $(AWK) -f $< > $@-new
  74 ifneq (,$(objpfx))
  75         sed $(sed-remove-objpfx) $@-dep >> $@-new
  76 else
  77         cat $@-dep >> $@-new
  78 endif
  79         rm -f $@-dep
  80         mv -f $@-new $@
  81 generated += mach-syscalls.mk
  82
  83 ifndef mach-syscalls
  84 # We cannot make the deps properly until we know how to make the system
  85 # call functions, and for that we must know what they all are.
  86 no_deps=t
  87 else
  88 $(mach-syscalls:%=$(objpfx)%.S): $(objpfx)%.S: $(objpfx)mach-syscalls.mk
  89         (echo '#include <sysdep.h>'; \
  90          echo 'kernel_trap (__$*,$(sysno-$*),$(nargs-$*))'; \
  91          echo 'weak_alias (__$*, $*)') > $@-new
  92          mv -f $@-new $@
  93 generated += $(mach-syscalls:=.S)
  94 endif   # mach-syscalls
  95
  96 # These syscalls that look like RPCs actually have no RPC equivalents.
  97 mach-shortcuts := $(filter-out device_writev_request \
  98                                device_read_overwrite_request \
  99                                device_read_overwrite \
 100                                vm_read_overwrite \
 101                                thread_switch \
 102                                ,\
 103                   $(patsubst syscall_%,%,$(filter syscall_%,$(mach-syscalls))))
 104
 105 ifndef mach-shortcuts
 106 # Forget about mach_interface.defs for this run.  On the next run,
 107 # $(mach-shortcuts) will be set, and that will change how
 108 # mach_interface.defs is processed: it will get the -D flags below.
 109 user-interfaces := $(filter-out $(mach-interface-list:%=mach/%) \
 110                                 mach/mach_port mach/mach_host mach/mach4 \
 111                                 device/device_request,\
 112                                 $(user-interfaces))
 113 endif
 114
 115 # For some reason, the calls in this file are `protected' by an ifdef.
 116 MIGFLAGS-mach/mach4=-DMACH_PCSAMPLE
 117
 118 # Make the MiG stubs for $(mach-shortcuts) be CALL_rpc.
 119 migdefines += $(foreach call,$(mach-shortcuts),-D$(call)=$(call)_rpc)
 120 $(mach-interface-list:%=mach/%.uh) \
 121   mach/mach_host.uh mach/mach_port.uh: $(objpfx)mach-syscalls.mk
 122
 123 ifdef mach-shortcuts
 124 $(mach-shortcuts:%=$(objpfx)%.c): $(objpfx)%.c: shortcut.awk \
 125                                                 $(objpfx)RPC_%_rpc.c
 126         $(AWK)  -v alias=$* -v call=__$* -v rpc=__$*_rpc \
 127                 -v syscall=__syscall_$* -f $^ > $@-new
 128         mv -f $@-new $@
 129 generated += $(mach-shortcuts:%=%.c)
 130 endif   # mach-shortcuts
 131
 132 # Generate mach-shortcuts.h, which will contain the prototypes for the
 133 # shortcutted kernel RPC functions.
 134 $(objpfx)mach-shortcuts.h: $(mach-interface-list:%=$(objpfx)mach/%.h) \
 135                            $(objpfx)mach/mach_host.h \
 136                            $(objpfx)mach/mach_port.h
 137 # The first line gets us one paragraph per line, with @s separating real lines.
 138 # The second line selects paragraphs for the shortcutted functions.
 139 # The third line removes `_rpc' from the names and reconstitutes the lines.
 140         cat $^ | tr \\012 @ | sed s/@@/@%/g | tr % \\012 \
 141         | grep '^/\* Routine [a-z0-9_]*_rpc \*/' \
 142         | sed 's/_rpc//g' | tr @ \\012 > $@-new
 143         mv -f $@-new $@
 144 generated += mach-shortcuts.h
 145
 146 before-compile += $(objpfx)mach-shortcuts.h
 147 \f
 148 include Machrules
 149 include ../Rules
 150
 151
 152 # A gcc bug prevents the generated file from working properly,
 153 # so we have one in the distribution for the time being.
 154 generated += errsystems.c
 155 $(objpfx)errsystems.c: errsystems.awk err_*.sub \
 156                        $(wildcard $(addsuffix /err_*.sub,$(+sysdep_dirs)))
 157         $(AWK) -v subsys='$(filter-out $<,$^)' -f $^ > $@.n
 158         mv -f $@.n $@
 159
 160
 161 # Convenient target to update all the generated source files.
 162 .PHONY: generated
 163 generated: $(addprefix $(common-objpfx),$(common-generated)) \
 164            $(addprefix $(objpfx),$(generated))
 165
 166 .PHONY: mach-before-compile
 167 mach-before-compile: $(mach-before-compile)