mach/Makefile

   1 # Copyright (C) 1991-2023 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_strlen 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 CFLAGS-RPC_thread_set_state.o = $(no-stack-protector)
  66 \f
  67 # Translate GNU names for CPUs into the names used in Mach header files.
  68 mach-machine = $(patsubst powerpc,ppc,$(base-machine))
  69
  70 # Define mach-syscalls and sysno-*.
  71 ifndef inhibit_mach_syscalls
  72 -include $(objpfx)mach-syscalls.mk
  73 endif
  74 $(objpfx)mach-syscalls.mk: syscalls.awk Makefile libc-modules.h
  75 # Go kludges!!!
  76         $(make-target-directory)
  77 # We must use $(CFLAGS) to get -O flags that affect #if's in header files.
  78         echo '#include <mach/syscall_sw.h>' | \
  79         $(CC) $(CFLAGS) $(CPPFLAGS) -E -MD -MP -MF $@-dep -MT $@ \
  80               -x c-header - \
  81               -D_MACH_`echo $(mach-machine) | tr a-z A-Z`_SYSCALL_SW_H_=1 | \
  82         sed -n -e 's/^kernel_trap(\(.*\),\([-0-9]*\),\([0-9]*\))$$/\1 \2 \3/p'\
  83         | $(AWK) -f $< > $@-new
  84 ifneq (,$(objpfx))
  85         sed $(sed-remove-objpfx) $@-dep >> $@-new
  86 else
  87         cat $@-dep >> $@-new
  88 endif
  89         rm -f $@-dep
  90         mv -f $@-new $@
  91 generated += mach-syscalls.mk
  92
  93 ifndef mach-syscalls
  94 # We cannot make the deps properly until we know how to make the system
  95 # call functions, and for that we must know what they all are.
  96 no_deps=t
  97 else
  98 $(mach-syscalls:%=$(objpfx)%.S): $(objpfx)%.S: $(objpfx)mach-syscalls.mk
  99         (echo '#include <sysdep.h>'; \
 100          echo 'kernel_trap (__$*,$(sysno-$*),$(nargs-$*))'; \
 101          echo 'weak_alias (__$*, $*)'; \
 102          echo 'libc_hidden_def (__$*)') > $@-new
 103          mv -f $@-new $@
 104 generated += $(mach-syscalls:=.S)
 105 endif   # mach-syscalls
 106
 107 # These syscalls that look like RPCs actually have no RPC equivalents.
 108 mach-shortcuts := $(filter-out device_writev_request \
 109                                device_read_overwrite_request \
 110                                device_read_overwrite \
 111                                vm_read_overwrite \
 112                                thread_switch \
 113                                ,\
 114                   $(patsubst syscall_%,%,$(filter syscall_%,$(mach-syscalls))))
 115
 116 ifndef mach-shortcuts
 117 # Forget about mach_interface.defs for this run.  On the next run,
 118 # $(mach-shortcuts) will be set, and that will change how
 119 # mach_interface.defs is processed: it will get the -D flags below.
 120 user-interfaces := $(filter-out $(mach-interface-list:%=mach/%) \
 121                                 mach/mach_port mach/mach_host mach/mach4 mach/gnumach \
 122                                 device/device_request,\
 123                                 $(user-interfaces))
 124 endif
 125
 126 # For some reason, the calls in this file are `protected' by an ifdef.
 127 MIGFLAGS-mach/mach4 = -DMACH_PCSAMPLE
 128 MIGFLAGS-device/device = -DDEVICE_ENABLE_DEVICE_OPEN_NEW
 129
 130 # Make the MiG stubs for $(mach-shortcuts) be CALL_rpc.
 131 migdefines += $(foreach call,$(mach-shortcuts),-D$(call)=$(call)_rpc)
 132 $(mach-interface-list:%=mach/%.uh) \
 133   mach/mach_host.uh mach/mach_port.uh: $(objpfx)mach-syscalls.mk
 134
 135 ifdef mach-shortcuts
 136 $(mach-shortcuts:%=$(objpfx)%.c): $(objpfx)%.c: shortcut.awk \
 137                                                 $(objpfx)RPC_%_rpc.c
 138         $(AWK)  -v alias=$* -v call=__$* -v rpc=__$*_rpc \
 139                 -v syscall=__syscall_$* -f $^ > $@-new
 140         mv -f $@-new $@
 141 generated += $(mach-shortcuts:%=%.c)
 142 endif   # mach-shortcuts
 143
 144 # Generate mach-shortcuts.h, which will contain the prototypes for the
 145 # shortcutted kernel RPC functions.
 146 $(objpfx)mach-shortcuts.h: $(mach-interface-list:%=$(objpfx)mach/%.h) \
 147                            $(objpfx)mach/mach_host.h \
 148                            $(objpfx)mach/mach_port.h
 149 # The first line gets us one paragraph per line, with @s separating real lines.
 150 # The second line selects paragraphs for the shortcutted functions.
 151 # The third line removes `_rpc' from the names and reconstitutes the lines.
 152         ( echo "#include <mach/mach_types.h>" ; \
 153           echo "#include <mach/message.h>" ; \
 154           echo ; \
 155           cat $^ | tr \\012 @ | sed s/@@/@%/g | tr % \\012 \
 156           | grep '^/\* Routine [a-z0-9_]*_rpc \*/' \
 157           | sed 's/_rpc//g' | tr @ \\012 ) > $@-new
 158         mv -f $@-new $@
 159 generated += mach-shortcuts.h
 160
 161 before-compile += $(objpfx)mach-shortcuts.h
 162 \f
 163 include Machrules
 164 include ../Rules
 165
 166
 167 # A gcc bug prevents the generated file from working properly,
 168 # so we have one in the distribution for the time being.
 169 generated += errsystems.c
 170 $(objpfx)errsystems.c: errsystems.awk err_*.sub \
 171                        $(wildcard $(addsuffix /err_*.sub,$(+sysdep_dirs)))
 172         $(AWK) -v subsys='$(filter-out $<,$^)' -f $^ > $@.n
 173         mv -f $@.n $@
 174
 175
 176 # Convenient target to update all the generated source files.
 177 .PHONY: generated
 178 generated: $(addprefix $(common-objpfx),$(common-generated)) \
 179            $(addprefix $(objpfx),$(generated))
 180
 181 .PHONY: mach-before-compile
 182 mach-before-compile: $(mach-before-compile)