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99ee4d26dc
When linked statically, TLS initialization is not achieved before mach_init and alike, so ssp accesses to tcbhead's stack_guard would crash. We can just avoid using ssp in the few functions needed before TLS is set up. * mach/Makefile (CFLAGS-mach_init.o, CFLAGS-RPC_vm_statistics.o, CFLAGS-RPC_vm_map.o, CFLAGS-RPC_vm_protect.o, CFLAGS-RPC_i386_set_gdt.o, CFLAGS-RPC_i386_set_ldt.o, CFLAGS-RPC_task_get_special_port.o): Add $(no-stack-protector). * hurd/Makefile (CFLAGS-hurdstartup.o, CFLAGS-RPC_exec_startup_get_info.o): Add $(no-stack-protector).
177 lines
6.3 KiB
Makefile
177 lines
6.3 KiB
Makefile
# Copyright (C) 1991-2017 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <http://www.gnu.org/licenses/>.
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subdir := mach
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include ../Makeconfig
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headers = mach_init.h mach.h mach_error.h mach-shortcuts.h mach/mach_traps.h \
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$(interface-headers) mach/mach.h mach/mig_support.h mach/error.h \
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$(lock-headers) machine-sp.h
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lock = spin-solid spin-lock mutex-init mutex-solid
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lock-headers = lock-intern.h machine-lock.h spin-lock.h
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routines = $(mach-syscalls) $(mach-shortcuts) \
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mach_init mig_strncpy msg \
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mig-alloc mig-dealloc mig-reply \
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msg-destroy msgserver \
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mach_error errstring error_compat errsystems \
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devstream setup-thread $(lock)
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# The RPC interfaces go in a separate library.
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interface-library := libmachuser
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# We produce mach_interface.h from mach.defs because there is already a
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# <mach/mach.h> that is not the interface header (thanks CMU).
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mach-interface-list := $(patsubst mach,mach_interface,$(mach-interface-list))
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mach/mach_interface.defs = mach/mach.defs
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# Similarly for memory_object_user vs. memory_object
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mach-interface-list := $(patsubst memory_object,memory_object_user,\
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$(mach-interface-list))
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mach/memory_object_user.defs = mach/memory_object.defs
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user-interfaces := $(addprefix mach/,$(mach-interface-list) \
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mach_port mach_host exc \
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)\
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$(addprefix device/,device device_request)
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server-interfaces := mach/exc
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# Clear any environment value.
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generated =
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# Avoid ssp before TLS is initialized.
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CFLAGS-mach_init.o = $(no-stack-protector)
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CFLAGS-RPC_vm_statistics.o = $(no-stack-protector)
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CFLAGS-RPC_vm_map.o = $(no-stack-protector)
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CFLAGS-RPC_vm_protect.o = $(no-stack-protector)
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CFLAGS-RPC_i386_set_gdt.o = $(no-stack-protector)
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CFLAGS-RPC_i386_set_ldt.o = $(no-stack-protector)
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CFLAGS-RPC_task_get_special_port.o = $(no-stack-protector)
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# Translate GNU names for CPUs into the names used in Mach header files.
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mach-machine = $(patsubst powerpc,ppc,$(base-machine))
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# Define mach-syscalls and sysno-*.
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ifndef inhibit_mach_syscalls
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-include $(objpfx)mach-syscalls.mk
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endif
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$(objpfx)mach-syscalls.mk: syscalls.awk Makefile libc-modules.h
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# Go kludges!!!
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$(make-target-directory)
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# We must use $(CFLAGS) to get -O flags that affect #if's in header files.
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echo '#include <mach/syscall_sw.h>' | \
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$(CC) $(CFLAGS) $(CPPFLAGS) -E -MD -MP -MF $@-dep -MT $@ \
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-x c-header - \
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-D_MACH_`echo $(mach-machine) | tr a-z A-Z`_SYSCALL_SW_H_=1 | \
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sed -n -e 's/^kernel_trap(\(.*\),\([-0-9]*\),\([0-9]*\))$$/\1 \2 \3/p'\
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| $(AWK) -f $< > $@-new
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ifneq (,$(objpfx))
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sed $(sed-remove-objpfx) $@-dep >> $@-new
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else
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cat $@-dep >> $@-new
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endif
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rm -f $@-dep
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mv -f $@-new $@
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generated += mach-syscalls.mk
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ifndef mach-syscalls
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# We cannot make the deps properly until we know how to make the system
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# call functions, and for that we must know what they all are.
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no_deps=t
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else
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$(mach-syscalls:%=$(objpfx)%.S): $(objpfx)%.S: $(objpfx)mach-syscalls.mk
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(echo '#include <sysdep.h>'; \
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echo 'kernel_trap (__$*,$(sysno-$*),$(nargs-$*))'; \
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echo 'weak_alias (__$*, $*)') > $@-new
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mv -f $@-new $@
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generated += $(mach-syscalls:=.S)
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endif # mach-syscalls
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# These syscalls that look like RPCs actually have no RPC equivalents.
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mach-shortcuts := $(filter-out device_writev_request \
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device_read_overwrite_request \
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device_read_overwrite \
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vm_read_overwrite \
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thread_switch \
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,\
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$(patsubst syscall_%,%,$(filter syscall_%,$(mach-syscalls))))
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ifndef mach-shortcuts
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# Forget about mach_interface.defs for this run. On the next run,
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# $(mach-shortcuts) will be set, and that will change how
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# mach_interface.defs is processed: it will get the -D flags below.
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user-interfaces := $(filter-out $(mach-interface-list:%=mach/%) \
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mach/mach_port mach/mach_host mach/mach4 \
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device/device_request,\
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$(user-interfaces))
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endif
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# For some reason, the calls in this file are `protected' by an ifdef.
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MIGFLAGS-mach/mach4=-DMACH_PCSAMPLE
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# Make the MiG stubs for $(mach-shortcuts) be CALL_rpc.
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migdefines += $(foreach call,$(mach-shortcuts),-D$(call)=$(call)_rpc)
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$(mach-interface-list:%=mach/%.uh) \
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mach/mach_host.uh mach/mach_port.uh: $(objpfx)mach-syscalls.mk
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ifdef mach-shortcuts
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$(mach-shortcuts:%=$(objpfx)%.c): $(objpfx)%.c: shortcut.awk \
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$(objpfx)RPC_%_rpc.c
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$(AWK) -v alias=$* -v call=__$* -v rpc=__$*_rpc \
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-v syscall=__syscall_$* -f $^ > $@-new
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mv -f $@-new $@
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generated += $(mach-shortcuts:%=%.c)
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endif # mach-shortcuts
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# Generate mach-shortcuts.h, which will contain the prototypes for the
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# shortcutted kernel RPC functions.
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$(objpfx)mach-shortcuts.h: $(mach-interface-list:%=$(objpfx)mach/%.h) \
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$(objpfx)mach/mach_host.h \
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$(objpfx)mach/mach_port.h
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# The first line gets us one paragraph per line, with @s separating real lines.
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# The second line selects paragraphs for the shortcutted functions.
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# The third line removes `_rpc' from the names and reconstitutes the lines.
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cat $^ | tr \\012 @ | sed s/@@/@%/g | tr % \\012 \
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| grep '^/\* Routine [a-z0-9_]*_rpc \*/' \
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| sed 's/_rpc//g' | tr @ \\012 > $@-new
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mv -f $@-new $@
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generated += mach-shortcuts.h
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before-compile += $(objpfx)mach-shortcuts.h
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include Machrules
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include ../Rules
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# A gcc bug prevents the generated file from working properly,
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# so we have one in the distribution for the time being.
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generated += errsystems.c
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$(objpfx)errsystems.c: errsystems.awk err_*.sub \
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$(wildcard $(addsuffix /err_*.sub,$(+sysdep_dirs)))
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$(AWK) -v subsys='$(filter-out $<,$^)' -f $^ > $@.n
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mv -f $@.n $@
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# Convenient target to update all the generated source files.
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.PHONY: generated
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generated: $(addprefix $(common-objpfx),$(common-generated)) \
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$(addprefix $(objpfx),$(generated))
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.PHONY: mach-before-compile
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mach-before-compile: $(mach-before-compile)
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