304 lines
10 KiB
Diff
304 lines
10 KiB
Diff
commit c2d549290d24aeae30a328a6b4061f60f095dea2
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Author: Joseph Myers <joseph@codesourcery.com>
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Date: Thu Jan 31 22:57:06 2013 +0000
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Remove bp-thunks code.
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Conflicts:
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sysdeps/generic/bp-thunks.h
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Copyright header change; file removed manually.
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diff --git a/Makerules b/Makerules
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index 9e572f48728b0f56..9bd7d603fc28a4de 100644
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--- a/Makerules
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+++ b/Makerules
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@@ -419,19 +419,15 @@ static-only-routines =
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endif
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endif
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-# Bounded pointer thunks are only built for *.ob
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-elide-bp-thunks = $(addprefix $(bppfx),$(bp-thunks))
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-
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elide-routines.oS += $(filter-out $(static-only-routines),\
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- $(routines) $(aux) $(sysdep_routines)) \
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- $(elide-bp-thunks)
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-elide-routines.os += $(static-only-routines) $(elide-bp-thunks)
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+ $(routines) $(aux) $(sysdep_routines))
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+elide-routines.os += $(static-only-routines)
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# If we have versioned code we don't need the old versions in any of the
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# static libraries.
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-elide-routines.o += $(shared-only-routines) $(elide-bp-thunks)
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-elide-routines.op += $(shared-only-routines) $(elide-bp-thunks)
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-elide-routines.og += $(shared-only-routines) $(elide-bp-thunks)
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+elide-routines.o += $(shared-only-routines)
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+elide-routines.op += $(shared-only-routines)
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+elide-routines.og += $(shared-only-routines)
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elide-routines.ob += $(shared-only-routines)
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# Shared library building.
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@@ -639,11 +635,7 @@ headers := $(headers) $(sysdep_headers)
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# This is the list of all object files, gotten by
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# replacing every ".c" in `sources' with a ".o".
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-# We also add bounded-pointer thunks, which are later
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-# elided for all suffixes except for `.ob'.
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-override objects := $(addprefix $(objpfx),$(sources:.c=.o) \
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- $(patsubst %,$(bppfx)%.o,\
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- $(filter $(routines) $(sysdep_routines),$(bp-thunks))))
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+override objects := $(addprefix $(objpfx),$(sources:.c=.o))
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# The makefile may define $(extra-libs) with `libfoo libbar'
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diff --git a/sysdeps/generic/bp-thunks.h b/sysdeps/generic/bp-thunks.h
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deleted file mode 100644
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index 1c9bba21c80387a5..0000000000000000
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--- a/sysdeps/generic/bp-thunks.h
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+++ /dev/null
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@@ -1,69 +0,0 @@
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-/* Bounded-pointer syscall thunk support.
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- Copyright (C) 2000, 2003 Free Software Foundation, Inc.
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- This file is part of the GNU C Library.
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- Contributed by Greg McGary <greg@mcgary.org>
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-
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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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-
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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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-
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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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-
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-#ifndef _bpthunks_h_
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-#define _bpthunks_h_
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-
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-#ifndef __ASSEMBLER__
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-
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-/* This header is included by the syscall BP thunks defined in
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- sysd-syscalls, as created by sysdeps/unix/make-syscalls.sh. It
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- includes all headers that contain prototype declarations for system
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- call functions. */
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-
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-#include <libc-symbols.h>
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-#include <bp-sym.h>
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-#include <bp-checks.h>
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-
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-/* Get `struct timeval' definition for select. */
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-#define __need_timeval
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-#include <bits/time.h>
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-
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-#include <stddef.h>
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-#include <unistd.h>
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-#include <sched.h>
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-#include <signal.h>
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-#include <fcntl.h>
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-#include <time.h>
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-#include <utime.h>
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-#include <stdio.h>
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-
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-#include <sys/types.h>
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-#include <sys/ioctl.h>
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-#include <sys/klog.h>
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-#include <sys/mman.h>
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-#include <sys/mount.h>
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-#include <sys/quota.h>
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-#include <sys/resource.h>
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-#include <sys/select.h>
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-#include <io/sys/sendfile.h>
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-#include <sys/socket.h>
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-#include <sys/stat.h>
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-#include <sys/statfs.h>
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-#include <sys/swap.h>
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-#include <sys/sysinfo.h>
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-#include <sys/time.h>
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-#include <sys/times.h>
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-#include <sys/timex.h>
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-#include <sys/utsname.h>
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-#include <sys/wait.h>
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-
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-#endif /* Not __ASSEMBLER__. */
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-
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-#endif /* _bpthunks_h_ */
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diff --git a/sysdeps/unix/Makefile b/sysdeps/unix/Makefile
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index 0ba5dcbcac323bb0..b369128d0cb6c2e7 100644
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--- a/sysdeps/unix/Makefile
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+++ b/sysdeps/unix/Makefile
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@@ -89,21 +89,10 @@ $(common-objpfx)sysd-syscalls: $(..)sysdeps/unix/make-syscalls.sh \
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mv -f $@T $@
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endif
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-# The $(bppfx)syscall.ob objects depend on s-proto-bp.d, which are
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-# generated to specify dependencies generated BP stubs have on headers.
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-# These deps use file names relative to a subdir, so don't
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-# include them in the parent directory.
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-ifneq (,$(filter $(unix-syscalls),$(routines) $(sysdep_routines) $(aux)))
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-ifndef no_deps
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--include $(common-objpfx)s-proto-bp.d
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-endif
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-endif
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-
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$(common-objpfx)s-%.d: $(..)sysdeps/unix/s-%.S \
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$(wildcard $(+sysdep_dirs:%=%/syscalls.list))
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$(+make-deps)
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-common-generated += s-proto-bp.d
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postclean-generated += sysd-syscalls
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endif
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diff --git a/sysdeps/unix/make-syscalls.sh b/sysdeps/unix/make-syscalls.sh
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index 2c701a2bf59183b2..4ec17c99bc16eaee 100644
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--- a/sysdeps/unix/make-syscalls.sh
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+++ b/sysdeps/unix/make-syscalls.sh
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@@ -36,10 +36,6 @@
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# W: wait status, optionally-NULL pointer to int (e.g., 2nd arg of wait4)
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#
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-ptr='[abBfFINpPsSWV]' # all pointer keyletters
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-int='[inv]' # all scalar keyletters
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-typ='[ifnNpP]' # typed-arg keyletters: we capture type for use in thunk
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-
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##############################################################################
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thisdir=$1; shift
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@@ -313,114 +309,4 @@ while read file srcfile caller syscall args strong weak; do
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;;
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esac
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- case x"$callnum",$srcfile,$args in
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- x[_-],-,* | x*,*.[sS],*V*) ;;
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- x*,-,*$ptr* | x*,*.[sS],*$ptr*)
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-
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- nv_weak=`for name in $weak; do
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- case $name in
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- *@*) ;;
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- *) echo $name;;
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- esac; done`
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-
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- # choose the name with the fewest leading underscores, preferably none
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- set `echo $strong $nv_weak |tr '@ \t' ' \n\n' |sort -r`
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- callname=$1
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-
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- # convert signature string to individual numbered arg names
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- # e.g., i:ipbN -> i0 i1 p2 b3 N4
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- set `echo $args |
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- sed -e 's/^\(.\):\(.*\)/\2 <\10>/' \
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- -e 's/^\([^ ]\)\(.*\)/\2 <\11>/' \
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- -e 's/^\([^ ]\)\(.*\)/\2 <\12>/' \
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- -e 's/^\([^ ]\)\(.*\)/\2 <\13>/' \
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- -e 's/^\([^ ]\)\(.*\)/\2 <\14>/' \
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- -e 's/^\([^ ]\)\(.*\)/\2 <\15>/' \
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- -e 's/^\([^ ]\)\(.*\)/\2 <\16>/' \
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- -e 's/^\([^ ]\)\(.*\)/\2 <\17>/' \
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- -e 's/^\([^ ]\)\(.*\)/\2 <\18>/' \
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- -e 's/^\([^ ]\)\(.*\)/\2 <\19>/'`
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- rtn=$1; shift
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- args=$*
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- arglist=`echo $* |sed 's/ /, /g'`
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-
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- # The best way to understand what's going on here is to examine
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- # the output in BUILDDIR/sysd-syscalls.
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-
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- # generate makefile envelope & rule head
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- echo "ifeq (,\$(filter $file,\$(bp-thunks)))"
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- echo "bp-thunks += $file"
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- echo "\$(objpfx)\$(bppfx)$file.ob: \$(common-objpfx)s-proto-bp.d"
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-
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- # generate macro head
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- echo " (echo '#define $callname(`echo $arglist | \
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- sed -e 's/[<>]//g'`) `echo $rtn | \
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- sed -e 's/<\('$typ'0\)>/\1v;/g' \
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- -e 's/<\(b0\)>/x0; extern char \1v;/g'` \\'; \\"
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-
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- # generate extern decls of dummy variables for each arg
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- echo " echo '`echo $args | \
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- sed -e 's/<\('$typ'[1-9]\)>/extern \1, \1v;/g' \
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- -e 's/<\([abBFIsSV][1-9]\)>/extern char \1v;/g' \
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- -e 's/<\([Wv][1-9]\)>/extern int \1v;/g'` \\'; \\"
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-
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- # generate bounded-pointer thunk declarator
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- echo " echo '`echo $rtn | \
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- sed -e 's/<\('$ptr'0\)>/__typeof (\1v) *__bounded/g' \
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- -e 's/<\('$int'0\)>/__typeof (\1v)/g'` BP_SYM ($strong) (`echo $arglist | \
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- sed -e 's/<\('$ptr'[1-9]\)>/__typeof (\1v) *__bounded \1a/g' \
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- -e 's/<\('$int'[1-9]\)>/__typeof (\1v) \1a/g'`) { \\'; \\"
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-
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- # generate extern primitive syscall declaration
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- echo " echo ' extern `echo $rtn | \
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- sed -e 's/<\('$ptr'0\)>/__typeof (\1v) *__unbounded/g' \
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- -e 's/<\('$int'0\)>/__typeof (\1v)/g'` ($callname) (`echo $arglist | \
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- sed -e 's/<\('$ptr'[1-9]\)>/__typeof (\1v) *__unbounded/g' \
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- -e 's/<\('$int'[1-9]\)>/__typeof (\1v)/g'`); \\'; \\"
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-
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- # generate call the primtive system call, optionally wrapping bounds
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- # around the result if the signature's return keyletter is `b'.
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- echo " echo ' return `echo $rtn |
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- sed -e 's/<b0>/BOUNDED_N (/' \
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- -e 's/<.0>//'`($callname) (`echo $arglist | \
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- sed -e 's/<\(a[1-9]\)>/__ptrvalue (\1a)/g' \
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- -e 's/<\(n[1-9]\)>, <\(V[1-9]\)>/\1a, CHECK_N_PAGES (\2a, \1a)/g' \
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- -e 's/<\(b[1-9]\)>, <\(n[1-9]\)>/CHECK_N (\1a, \2a), \2a/g' \
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- -e 's/<\(b[1-9]\)>, <\(N[1-9]\)>/CHECK_N (\1a, *CHECK_1 (\2a)), __ptrvalue (\2a)/g' \
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- -e 's/<\(B[1-9]\)>, <\(n[1-9]\)>/CHECK_N_NULL_OK (\1a, \2a), \2a/g' \
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- -e 's/<\(B[1-9]\)>, <\(N[1-9]\)>/CHECK_N_NULL_OK (\1a, *CHECK_1 (\2a)), __ptrvalue (\2a)/g' \
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- -e 's/<\(f[1-9]\)>/CHECK_N (\1a, 2)/g' \
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- -e 's/<\(i[1-9]\)>, <\(F[1-9]\)>/\1a, CHECK_FCNTL (\2a, \1a)/g' \
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- -e 's/<\(i[1-9]\)>, <\(I[1-9]\)>/\1a, CHECK_IOCTL (\2a, \1a)/g' \
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- -e 's/<\(p[1-9]\)>/CHECK_1 (\1a)/g' \
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- -e 's/<\([PW][1-9]\)>/CHECK_1_NULL_OK (\1a)/g' \
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- -e 's/<\(s[1-9]\)>/CHECK_STRING (\1a)/g' \
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- -e 's/<\(S[1-9]\)>/CHECK_STRING_NULL_OK (\1a)/g' \
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- -e 's/<\([ivn][1-9]\)>/\1a/g'`)`echo $rtn $args |
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- sed -e 's/<b0>.*<\(n[1-9]\)>.*/, \1a)/' \
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- -e 's/<.0>.*//'`; \\'; \\"
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-
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- echo " echo '} \\'; \\"
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-
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- echo " echo 'libc_hidden_def (BP_SYM ($strong)) \\'; \\"
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-
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- # generate thunk aliases
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- for name in $nv_weak; do
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- echo " echo 'weak_alias (BP_SYM ($strong), BP_SYM ($name)) \\'; \\"
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- echo " echo 'libc_hidden_weak (BP_SYM ($name)) \\'; \\"
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- done
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-
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- # wrap up
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- echo "\
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- echo ''; \\
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- echo '#include <bp-thunks.h>'; \\
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- ) | \$(COMPILE.c) -x c -o \$@ -"
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-### Use this for debugging intermediate output:
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-### ) >\$(@:.ob=.c)
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-### \$(subst -c,-E,\$(COMPILE.c)) -o \$(@:.ob=.ib) \$(@:.ob=.c)
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-### \$(COMPILE.c) -x cpp-output -o \$@ \$(@:.ob=.ib)"
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- echo endif
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- ;;
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- esac
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-
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done
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diff --git a/sysdeps/unix/s-proto-bp.S b/sysdeps/unix/s-proto-bp.S
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deleted file mode 100644
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index ba0363e16ffc4bd8..0000000000000000
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--- a/sysdeps/unix/s-proto-bp.S
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+++ /dev/null
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@@ -1,4 +0,0 @@
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-/* This file exists just to have its dependencies determined.
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- Those dependencies are then used for the bp thunk objects. */
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-
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-#include <bp-thunks.h>
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diff --git a/sysdeps/unix/sysv/linux/i386/bp-thunks.h b/sysdeps/unix/sysv/linux/i386/bp-thunks.h
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deleted file mode 100644
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index 59a42ddefe8ed33e..0000000000000000
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--- a/sysdeps/unix/sysv/linux/i386/bp-thunks.h
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+++ /dev/null
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@@ -1,4 +0,0 @@
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-#ifndef __ASSEMBLER__
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-# include <sysdeps/generic/bp-thunks.h>
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-# include <sys/vm86.h>
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-#endif
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