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 18subdir := mach 19 20include ../Makeconfig 21 22headers = 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 25lock = spin-solid spin-lock mutex-init mutex-solid 26lock-headers = lock-intern.h spin-lock.h 27routines = $(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. 35interface-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). 39mach-interface-list := $(patsubst mach,mach_interface,$(mach-interface-list)) 40mach/mach_interface.defs = mach/mach.defs 41 42# Similarly for memory_object_user vs. memory_object 43mach-interface-list := $(patsubst memory_object,memory_object_user,\ 44 $(mach-interface-list)) 45mach/memory_object_user.defs = mach/memory_object.defs 46 47user-interfaces := $(addprefix mach/,$(mach-interface-list) \ 48 mach_port mach_host exc \ 49 )\ 50 $(addprefix device/,device device_request) 51 52server-interfaces := mach/exc 53 54# Clear any environment value. 55generated = 56 57# Avoid ssp before TLS is initialized. 58CFLAGS-mach_init.o = $(no-stack-protector) 59CFLAGS-RPC_vm_statistics.o = $(no-stack-protector) 60CFLAGS-RPC_vm_map.o = $(no-stack-protector) 61CFLAGS-RPC_vm_protect.o = $(no-stack-protector) 62CFLAGS-RPC_i386_set_gdt.o = $(no-stack-protector) 63CFLAGS-RPC_i386_set_ldt.o = $(no-stack-protector) 64CFLAGS-RPC_task_get_special_port.o = $(no-stack-protector) 65 66# Translate GNU names for CPUs into the names used in Mach header files. 67mach-machine = $(patsubst powerpc,ppc,$(base-machine)) 68 69# Define mach-syscalls and sysno-*. 70ifndef inhibit_mach_syscalls 71-include $(objpfx)mach-syscalls.mk 72endif 73$(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 $< > $@-new 83ifneq (,$(objpfx)) 84 sed $(sed-remove-objpfx) $@-dep >> $@-new 85else 86 cat $@-dep >> $@-new 87endif 88 rm -f $@-dep 89 mv -f $@-new $@ 90generated += mach-syscalls.mk 91 92ifndef mach-syscalls 93# We cannot make the deps properly until we know how to make the system 94# call functions, and for that we must know what they all are. 95no_deps=t 96else 97$(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 $@ 103generated += $(mach-syscalls:=.S) 104endif # mach-syscalls 105 106# These syscalls that look like RPCs actually have no RPC equivalents. 107mach-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 115ifndef 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. 119user-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)) 123endif 124 125# For some reason, the calls in this file are `protected' by an ifdef. 126MIGFLAGS-mach/mach4=-DMACH_PCSAMPLE 127 128# Make the MiG stubs for $(mach-shortcuts) be CALL_rpc. 129migdefines += $(foreach call,$(mach-shortcuts),-D$(call)=$(call)_rpc) 130$(mach-interface-list:%=mach/%.uh) \ 131 mach/mach_host.uh mach/mach_port.uh: $(objpfx)mach-syscalls.mk 132 133ifdef mach-shortcuts 134$(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 $@ 139generated += $(mach-shortcuts:%=%.c) 140endif # mach-shortcuts 141 142# Generate mach-shortcuts.h, which will contain the prototypes for the 143# shortcutted kernel RPC functions. 144$(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 $@ 157generated += mach-shortcuts.h 158 159before-compile += $(objpfx)mach-shortcuts.h 160 161include Machrules 162include ../Rules 163 164 165# A gcc bug prevents the generated file from working properly, 166# so we have one in the distribution for the time being. 167generated += errsystems.c 168$(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 176generated: $(addprefix $(common-objpfx),$(common-generated)) \ 177 $(addprefix $(objpfx),$(generated)) 178 179.PHONY: mach-before-compile 180mach-before-compile: $(mach-before-compile) 181