mach/Makefile

   1 # Copyright (C) 1991-2022 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 # <https://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 bits/mach/param.h
  25 lock = spin-solid spin-lock mutex-init mutex-solid
  26 lock-headers = lock-intern.h spin-lock.h
  27 routines = $(mach-syscalls) $(mach-shortcuts) \
  28            mach_init mig_strncpy mig_memcpy 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
  57 # Avoid ssp before TLS is initialized.
  58 CFLAGS-mach_init.o = $(no-stack-protector)
  59 CFLAGS-RPC_vm_statistics.o = $(no-stack-protector)
  60 CFLAGS-RPC_vm_map.o = $(no-stack-protector)
  61 CFLAGS-RPC_vm_protect.o = $(no-stack-protector)
  62 CFLAGS-RPC_i386_set_gdt.o = $(no-stack-protector)
  63 CFLAGS-RPC_i386_set_ldt.o = $(no-stack-protector)
  64 CFLAGS-RPC_task_get_special_port.o = $(no-stack-protector)
  65 \f
  66 # Translate GNU names for CPUs into the names used in Mach header files.
  67 mach-machine = $(patsubst powerpc,ppc,$(base-machine))
  68
  69 # Define mach-syscalls and sysno-*.
  70 ifndef inhibit_mach_syscalls
  71 -include $(objpfx)mach-syscalls.mk
  72 endif
  73 $(objpfx)mach-syscalls.mk: syscalls.awk Makefile libc-modules.h
  74 # Go kludges!!!
  75         $(make-target-directory)
  76 # We must use $(CFLAGS) to get -O flags that affect #if's in header files.
  77         echo '#include <mach/syscall_sw.h>' | \
  78         $(CC) $(CFLAGS) $(CPPFLAGS) -E -MD -MP -MF $@-dep -MT $@ \
  79               -x c-header - \
  80               -D_MACH_`echo $(mach-machine) | tr a-z A-Z`_SYSCALL_SW_H_=1 | \
  81         sed -n -e 's/^kernel_trap(\(.*\),\([-0-9]*\),\([0-9]*\))$$/\1 \2 \3/p'\
  82         | $(AWK) -f $< > $@-new
  83 ifneq (,$(objpfx))
  84         sed $(sed-remove-objpfx) $@-dep >> $@-new
  85 else
  86         cat $@-dep >> $@-new
  87 endif
  88         rm -f $@-dep
  89         mv -f $@-new $@
  90 generated += mach-syscalls.mk
  91
  92 ifndef mach-syscalls
  93 # We cannot make the deps properly until we know how to make the system
  94 # call functions, and for that we must know what they all are.
  95 no_deps=t
  96 else
  97 $(mach-syscalls:%=$(objpfx)%.S): $(objpfx)%.S: $(objpfx)mach-syscalls.mk
  98         (echo '#include <sysdep.h>'; \
  99          echo 'kernel_trap (__$*,$(sysno-$*),$(nargs-$*))'; \
 100          echo 'weak_alias (__$*, $*)'; \
 101          echo 'libc_hidden_def (__$*)') > $@-new
 102          mv -f $@-new $@
 103 generated += $(mach-syscalls:=.S)
 104 endif   # mach-syscalls
 105
 106 # These syscalls that look like RPCs actually have no RPC equivalents.
 107 mach-shortcuts := $(filter-out device_writev_request \
 108                                device_read_overwrite_request \
 109                                device_read_overwrite \
 110                                vm_read_overwrite \
 111                                thread_switch \
 112                                ,\
 113                   $(patsubst syscall_%,%,$(filter syscall_%,$(mach-syscalls))))
 114
 115 ifndef mach-shortcuts
 116 # Forget about mach_interface.defs for this run.  On the next run,
 117 # $(mach-shortcuts) will be set, and that will change how
 118 # mach_interface.defs is processed: it will get the -D flags below.
 119 user-interfaces := $(filter-out $(mach-interface-list:%=mach/%) \
 120                                 mach/mach_port mach/mach_host mach/mach4 mach/gnumach \
 121                                 device/device_request,\
 122                                 $(user-interfaces))
 123 endif
 124
 125 # For some reason, the calls in this file are `protected' by an ifdef.
 126 MIGFLAGS-mach/mach4=-DMACH_PCSAMPLE
 127
 128 # Make the MiG stubs for $(mach-shortcuts) be CALL_rpc.
 129 migdefines += $(foreach call,$(mach-shortcuts),-D$(call)=$(call)_rpc)
 130 $(mach-interface-list:%=mach/%.uh) \
 131   mach/mach_host.uh mach/mach_port.uh: $(objpfx)mach-syscalls.mk
 132
 133 ifdef mach-shortcuts
 134 $(mach-shortcuts:%=$(objpfx)%.c): $(objpfx)%.c: shortcut.awk \
 135                                                 $(objpfx)RPC_%_rpc.c
 136         $(AWK)  -v alias=$* -v call=__$* -v rpc=__$*_rpc \
 137                 -v syscall=__syscall_$* -f $^ > $@-new
 138         mv -f $@-new $@
 139 generated += $(mach-shortcuts:%=%.c)
 140 endif   # mach-shortcuts
 141
 142 # Generate mach-shortcuts.h, which will contain the prototypes for the
 143 # shortcutted kernel RPC functions.
 144 $(objpfx)mach-shortcuts.h: $(mach-interface-list:%=$(objpfx)mach/%.h) \
 145                            $(objpfx)mach/mach_host.h \
 146                            $(objpfx)mach/mach_port.h
 147 # The first line gets us one paragraph per line, with @s separating real lines.
 148 # The second line selects paragraphs for the shortcutted functions.
 149 # The third line removes `_rpc' from the names and reconstitutes the lines.
 150         ( echo "#include <mach/mach_types.h>" ; \
 151           echo "#include <mach/message.h>" ; \
 152           echo ; \
 153           cat $^ | tr \\012 @ | sed s/@@/@%/g | tr % \\012 \
 154           | grep '^/\* Routine [a-z0-9_]*_rpc \*/' \
 155           | sed 's/_rpc//g' | tr @ \\012 ) > $@-new
 156         mv -f $@-new $@
 157 generated += mach-shortcuts.h
 158
 159 before-compile += $(objpfx)mach-shortcuts.h
 160 \f
 161 include Machrules
 162 include ../Rules
 163
 164
 165 # A gcc bug prevents the generated file from working properly,
 166 # so we have one in the distribution for the time being.
 167 generated += errsystems.c
 168 $(objpfx)errsystems.c: errsystems.awk err_*.sub \
 169                        $(wildcard $(addsuffix /err_*.sub,$(+sysdep_dirs)))
 170         $(AWK) -v subsys='$(filter-out $<,$^)' -f $^ > $@.n
 171         mv -f $@.n $@
 172
 173
 174 # Convenient target to update all the generated source files.
 175 .PHONY: generated
 176 generated: $(addprefix $(common-objpfx),$(common-generated)) \
 177            $(addprefix $(objpfx),$(generated))
 178
 179 .PHONY: mach-before-compile
 180 mach-before-compile: $(mach-before-compile)