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julius |
#!/bin/sh
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# genscripts.sh - generate the ld-emulation-target specific files
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# Copyright 2007, 2008 Free Software Foundation, Inc.
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#
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# This file is part of the Gnu Linker.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3, or (at your option)
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# any later version.
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#
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# This program 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
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with GLD; see the file COPYING. If not, write to the Free
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# Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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# 02110-1301, USA.
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#
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# Usage: genscripts_extra.sh \
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# srcdir \
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# libdir \
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# prefix \
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# exec_prefix \
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# host \
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# target \
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# target_alias \
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# default_emulation \
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# native_lib_dirs \
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# use_sysroot \
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# this_emulation \
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# optional:
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# tool_dir \
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# customizer_script
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#
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# Sample usage:
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#
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# genscripts_extra.sh \
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# /sources/ld \
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# /usr/local/lib \
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# /usr/local \
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# /usr/local \
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# sparc-sun-sunos4.1.3 \
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# sparc-sun-sunos4.1.3 \
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# sparc-sun-sunos4.1.3 \
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# sun4 \
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# "" \
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# no \
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# sun3 \
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# sparc-sun-sunos4.1.3 \
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# sparc.sh
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#
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# produces the linker scripts:
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#
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# sun3.x [default linker script]
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# sun3.xbn [used when the linker is invoked with "-N"]
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# sun3.xn [used when the linker is invoked with "-n"]
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# sun3.xr [used when the linker is invoked with "-r"]
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# sun3.xu [used when the linker is invoked with "-Ur"]
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# and maybe:
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# sun3.xc [used when the linker is invoked with "-z combreloc"]
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# sun3.xsc [used when the linker is invoked with "--shared"]
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# sun3.xdc [used when the linker is invoked with "-pie"]
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# sun3.xa [used when the linker is invoked with "--enable-auto-import"]
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#
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# It also produced the C source file:
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#
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# em_sun3.c
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#
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# which is then compiled into the linker.
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#
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# The linker scripts are created by running the shell script
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# /sources/ld/emulparams/sparc.sh to set the value of ${SCRIPT_NAME}
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# (and any other variables it wants to). ${SCRIPT_NAME} is then
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# invoked with a variable called ${LD_FLAG} to tell it which version
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# of the linker script to create.
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srcdir=$1
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libdir=$2
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prefix=$3
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exec_prefix=$4
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host=$5
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target=$6
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target_alias=$7
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EMULATION_LIBPATH=$8
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NATIVE_LIB_DIRS=$9
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shift 9
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use_sysroot=$1
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EMULATION_NAME=$2
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TOOL_LIB=$3
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CUSTOMIZER_SCRIPT=$4
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# Can't use ${TOOL_LIB:-$target_alias} here due to an Ultrix shell bug.
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if [ "x${TOOL_LIB}" = "x" ] ; then
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tool_lib=${exec_prefix}/${target_alias}/lib
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else
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tool_lib=${exec_prefix}/${TOOL_LIB}/lib
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fi
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if [ "x${CUSTOMIZER_SCRIPT}" = "x" ] ; then
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CUSTOMIZER_SCRIPT=${EMULATION_NAME}
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fi
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CUSTOMIZER_SCRIPT="${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh"
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# Include the emulation-specific parameters:
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. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
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if test -d ldscripts; then
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true
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else
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mkdir ldscripts
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fi
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# Set some flags for the emultempl scripts. USE_LIBPATH will
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# be set for any libpath-using emulation; NATIVE will be set for a
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# libpath-using emulation where ${host} = ${target}. NATIVE
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# may already have been set by the emulparams file, but that's OK
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# (it'll just get set to "yes" twice).
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case " $EMULATION_LIBPATH " in
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*" ${EMULATION_NAME} "*)
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if [ "x${host}" = "x${target}" ] ; then
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NATIVE=yes
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USE_LIBPATH=yes
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elif [ "x${use_sysroot}" = "xyes" ] ; then
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USE_LIBPATH=yes
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fi
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;;
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esac
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# If the emulparams file sets NATIVE, make sure USE_LIBPATH is set also.
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if test "x$NATIVE" = "xyes" ; then
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USE_LIBPATH=yes
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fi
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# Set the library search path, for libraries named by -lfoo.
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# If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used.
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# Otherwise, the default is set here.
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#
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# The format is the usual list of colon-separated directories.
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# To force a logically empty LIB_PATH, do LIBPATH=":".
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#
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# If we are using a sysroot, prefix library paths with "=" to indicate this.
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#
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# If the emulparams file set LIBPATH_SUFFIX, prepend an extra copy of
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# the library path with the suffix applied.
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if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes ] ; then
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LIB_PATH2=
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libs=${NATIVE_LIB_DIRS}
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if [ "x${use_sysroot}" != "xyes" ] ; then
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case " ${libs} " in
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*" ${libdir} "*) ;;
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*) libs="${libdir} ${libs}" ;;
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esac
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case " ${libs} " in
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*" ${tool_lib} "*) ;;
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*) libs="${tool_lib} ${libs}" ;;
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esac
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fi
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for lib in ${libs}; do
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# The "=" is harmless if we aren't using a sysroot, but also needless.
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if [ "x${use_sysroot}" = "xyes" ] ; then
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lib="=${lib}"
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fi
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addsuffix=
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case "${LIBPATH_SUFFIX}:${lib}" in
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:*) ;;
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*:*${LIBPATH_SUFFIX}) ;;
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*) addsuffix=yes ;;
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esac
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if test -n "$addsuffix"; then
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case :${LIB_PATH}: in
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*:${lib}${LIBPATH_SUFFIX}:*) ;;
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::) LIB_PATH=${lib}${LIBPATH_SUFFIX} ;;
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*) LIB_PATH=${LIB_PATH}:${lib}${LIBPATH_SUFFIX} ;;
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esac
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case :${LIB_PATH}:${LIB_PATH2}: in
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*:${lib}:*) ;;
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*::) LIB_PATH2=${lib} ;;
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*) LIB_PATH2=${LIB_PATH2}:${lib} ;;
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esac
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else
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case :${LIB_PATH2}: in
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*:${lib}:*) ;;
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::) LIB_PATH2=${lib} ;;
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*) LIB_PATH2=${LIB_PATH2}:${lib} ;;
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esac
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fi
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done
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case :${LIB_PATH}:${LIB_PATH2}: in
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*:: | ::*) LIB_PATH=${LIB_PATH}${LIB_PATH2} ;;
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*) LIB_PATH=${LIB_PATH}:${LIB_PATH2} ;;
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esac
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# For multilib'ed targets, ensure both ${target_alias}/lib${LIBPATH_SUFFIX}
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# and ${TOOL_LIB}/lib${LIBPATH_SUFFIX} are in the default search path, because
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# 64bit libraries may be in both places, depending on cross-development
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# setup method (e.g.: /usr/s390x-linux/lib64 vs /usr/s390-linux/lib64)
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case "${LIBPATH_SUFFIX}:${tool_lib}" in
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:*) ;;
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*:*${LIBPATH_SUFFIX}) ;;
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*)
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paths="${exec_prefix}/${target_alias}/lib${LIBPATH_SUFFIX}"
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if [ x"${TOOL_LIB}" != x ]; then
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paths="${paths} ${exec_prefix}/${TOOL_LIB}/lib${LIBPATH_SUFFIX}"
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fi
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for path in $paths; do
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case :${LIB_PATH}: in
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::: | *:${path}:*) ;;
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*) LIB_PATH=${path}:${LIB_PATH} ;;
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esac
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done
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;;
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esac
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fi
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# Always search $(tooldir)/lib, aka /usr/local/TARGET/lib, except for
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# sysrooted configurations and when LIBPATH=":".
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if [ "x${use_sysroot}" != "xyes" ] ; then
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case :${LIB_PATH}: in
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::: | *:${tool_lib}:*) ;;
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::) LIB_PATH=${tool_lib} ;;
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*) LIB_PATH=${tool_lib}:${LIB_PATH} ;;
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esac
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# For multilib targets, search both $tool_lib dirs
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if [ "x${LIBPATH_SUFFIX}" != "x" ] ; then
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case :${LIB_PATH}: in
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::: | *:${tool_lib}${LIBPATH_SUFFIX}:*) ;;
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::) LIB_PATH=${tool_lib}${LIBPATH_SUFFIX} ;;
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*) LIB_PATH=${tool_lib}${LIBPATH_SUFFIX}:${LIB_PATH} ;;
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esac
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fi
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fi
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LIB_SEARCH_DIRS=`echo ${LIB_PATH} | sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`
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# We need it for testsuite.
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set $EMULATION_LIBPATH
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if [ "x$1" = "x$EMULATION_NAME" ]; then
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test -d tmpdir || mkdir tmpdir
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rm -f tmpdir/libpath.exp
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echo "set libpath \"${LIB_PATH}\"" | sed -e 's/:/ /g' > tmpdir/libpath.exp
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fi
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# Generate 5 or 6 script files from a master script template in
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# ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6
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# script files is actually used depends on command line options given
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# to ld. (SCRIPT_NAME was set in the emulparams_file.)
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#
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# A .x script file is the default script.
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# A .xr script is for linking without relocation (-r flag).
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# A .xu script is like .xr, but *do* create constructors (-Ur flag).
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# A .xn script is for linking with -n flag (mix text and data on same page).
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# A .xbn script is for linking with -N flag (mix text and data on same page).
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# A .xs script is for generating a shared library with the --shared
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# flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the
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# emulation parameters.
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# A .xc script is for linking with -z combreloc; it is only generated if
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# $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
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# $SCRIPT_NAME is "elf".
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# A .xsc script is for linking with --shared -z combreloc; it is generated
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# if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
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# $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation
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# parameters too.
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if [ "x$SCRIPT_NAME" = "xelf" ]; then
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GENERATE_COMBRELOC_SCRIPT=yes
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fi
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| 276 |
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| 277 |
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SEGMENT_SIZE=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}}
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| 278 |
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| 279 |
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# Determine DATA_ALIGNMENT for the 5 variants, using
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| 280 |
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# values specified in the emulparams/<script_to_run>.sh file or default.
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| 281 |
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DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}"
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DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}"
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DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}"
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DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}"
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DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"
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| 287 |
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| 288 |
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LD_FLAG=r
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DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
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| 290 |
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DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
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| 291 |
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( echo "/* Script for ld -r: link without relocation */"
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| 292 |
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. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
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| 293 |
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. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
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| 294 |
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) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xr
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| 295 |
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LD_FLAG=u
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DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
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CONSTRUCTING=" "
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| 299 |
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( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
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| 300 |
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. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
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| 301 |
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. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
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) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xu
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| 303 |
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LD_FLAG=
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DATA_ALIGNMENT=${DATA_ALIGNMENT_}
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| 306 |
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RELOCATING=" "
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| 307 |
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( echo "/* Default linker script, for normal executables */"
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| 308 |
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. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
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| 309 |
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. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
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| 310 |
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) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.x
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| 311 |
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| 312 |
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LD_FLAG=n
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| 313 |
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DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
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| 314 |
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( echo "/* Script for -n: mix text and data on same page */"
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| 315 |
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. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
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| 316 |
|
|
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
|
| 317 |
|
|
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xn
|
| 318 |
|
|
|
| 319 |
|
|
LD_FLAG=N
|
| 320 |
|
|
DATA_ALIGNMENT=${DATA_ALIGNMENT_N}
|
| 321 |
|
|
( echo "/* Script for -N: mix text and data on same page; don't align data */"
|
| 322 |
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
| 323 |
|
|
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
|
| 324 |
|
|
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xbn
|
| 325 |
|
|
|
| 326 |
|
|
if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
|
| 327 |
|
|
DATA_ALIGNMENT=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}}
|
| 328 |
|
|
LD_FLAG=c
|
| 329 |
|
|
COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
|
| 330 |
|
|
( echo "/* Script for -z combreloc: combine and sort reloc sections */"
|
| 331 |
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
| 332 |
|
|
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
|
| 333 |
|
|
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xc
|
| 334 |
|
|
rm -f ${COMBRELOC}
|
| 335 |
|
|
LD_FLAG=w
|
| 336 |
|
|
RELRO_NOW=" "
|
| 337 |
|
|
COMBRELOC=ldscripts/${EMULATION_NAME}.xw.tmp
|
| 338 |
|
|
( echo "/* Script for -z combreloc -z now -z relro: combine and sort reloc sections */"
|
| 339 |
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
| 340 |
|
|
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
|
| 341 |
|
|
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xw
|
| 342 |
|
|
rm -f ${COMBRELOC}
|
| 343 |
|
|
COMBRELOC=
|
| 344 |
|
|
unset RELRO_NOW
|
| 345 |
|
|
fi
|
| 346 |
|
|
|
| 347 |
|
|
if test -n "$GENERATE_SHLIB_SCRIPT"; then
|
| 348 |
|
|
LD_FLAG=shared
|
| 349 |
|
|
DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
|
| 350 |
|
|
CREATE_SHLIB=" "
|
| 351 |
|
|
(
|
| 352 |
|
|
echo "/* Script for ld --shared: link shared library */"
|
| 353 |
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
| 354 |
|
|
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
|
| 355 |
|
|
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xs
|
| 356 |
|
|
if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
|
| 357 |
|
|
LD_FLAG=cshared
|
| 358 |
|
|
DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
|
| 359 |
|
|
COMBRELOC=ldscripts/${EMULATION_NAME}.xsc.tmp
|
| 360 |
|
|
( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
|
| 361 |
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
| 362 |
|
|
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
|
| 363 |
|
|
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xsc
|
| 364 |
|
|
rm -f ${COMBRELOC}
|
| 365 |
|
|
LD_FLAG=wshared
|
| 366 |
|
|
RELRO_NOW=" "
|
| 367 |
|
|
COMBRELOC=ldscripts/${EMULATION_NAME}.xsw.tmp
|
| 368 |
|
|
( echo "/* Script for --shared -z combreloc -z now -z relro: shared library, combine & sort relocs */"
|
| 369 |
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
| 370 |
|
|
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
|
| 371 |
|
|
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xsw
|
| 372 |
|
|
rm -f ${COMBRELOC}
|
| 373 |
|
|
COMBRELOC=
|
| 374 |
|
|
unset RELRO_NOW
|
| 375 |
|
|
fi
|
| 376 |
|
|
unset CREATE_SHLIB
|
| 377 |
|
|
fi
|
| 378 |
|
|
|
| 379 |
|
|
if test -n "$GENERATE_PIE_SCRIPT"; then
|
| 380 |
|
|
LD_FLAG=pie
|
| 381 |
|
|
DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
|
| 382 |
|
|
CREATE_PIE=" "
|
| 383 |
|
|
(
|
| 384 |
|
|
echo "/* Script for ld -pie: link position independent executable */"
|
| 385 |
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
| 386 |
|
|
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
|
| 387 |
|
|
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xd
|
| 388 |
|
|
if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
|
| 389 |
|
|
LD_FLAG=cpie
|
| 390 |
|
|
DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
|
| 391 |
|
|
COMBRELOC=ldscripts/${EMULATION_NAME}.xdc.tmp
|
| 392 |
|
|
( echo "/* Script for -pie -z combreloc: position independent executable, combine & sort relocs */"
|
| 393 |
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
| 394 |
|
|
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
|
| 395 |
|
|
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xdc
|
| 396 |
|
|
rm -f ${COMBRELOC}
|
| 397 |
|
|
LD_FLAG=wpie
|
| 398 |
|
|
RELRO_NOW=" "
|
| 399 |
|
|
COMBRELOC=ldscripts/${EMULATION_NAME}.xdw.tmp
|
| 400 |
|
|
( echo "/* Script for -pie -z combreloc -z now -z relro: position independent executable, combine & sort relocs */"
|
| 401 |
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
| 402 |
|
|
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
|
| 403 |
|
|
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xdw
|
| 404 |
|
|
rm -f ${COMBRELOC}
|
| 405 |
|
|
COMBRELOC=
|
| 406 |
|
|
unset RELRO_NOW
|
| 407 |
|
|
fi
|
| 408 |
|
|
unset CREATE_PIE
|
| 409 |
|
|
fi
|
| 410 |
|
|
|
| 411 |
|
|
if test -n "$GENERATE_AUTO_IMPORT_SCRIPT"; then
|
| 412 |
|
|
LD_FLAG=auto_import
|
| 413 |
|
|
DATA_ALIGNMENT=${DATA_ALIGNMENT_}
|
| 414 |
|
|
(
|
| 415 |
|
|
echo "/* Script for ld --enable-auto-import: Like the default script except read only data is placed into .data */"
|
| 416 |
|
|
. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
|
| 417 |
|
|
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
|
| 418 |
|
|
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xa
|
| 419 |
|
|
fi
|
| 420 |
|
|
|
| 421 |
|
|
case " $EMULATION_LIBPATH " in
|
| 422 |
|
|
*" ${EMULATION_NAME} "*) COMPILE_IN=true;;
|
| 423 |
|
|
esac
|
| 424 |
|
|
|
| 425 |
|
|
# PR ld/5652:
|
| 426 |
|
|
# Determine if the shell has support for the variable BASH_LINENO.
|
| 427 |
|
|
# When it is the case, it is only available inside functions.
|
| 428 |
|
|
has_lineno()
|
| 429 |
|
|
{
|
| 430 |
|
|
test "x$BASH_LINENO" != "x"
|
| 431 |
|
|
}
|
| 432 |
|
|
|
| 433 |
|
|
# Enable accruate error source in the compiler error messages, if possible.
|
| 434 |
|
|
if has_lineno; then
|
| 435 |
|
|
. ${srcdir}/genscrba.sh
|
| 436 |
|
|
else
|
| 437 |
|
|
source_em()
|
| 438 |
|
|
{
|
| 439 |
|
|
. $1
|
| 440 |
|
|
}
|
| 441 |
|
|
fragment()
|
| 442 |
|
|
{
|
| 443 |
|
|
cat >> e${EMULATION_NAME}.c
|
| 444 |
|
|
}
|
| 445 |
|
|
fi
|
| 446 |
|
|
|
| 447 |
|
|
# Generate e${EMULATION_NAME}.c.
|
| 448 |
|
|
# Start with an empty file, then the sourced .em script
|
| 449 |
|
|
# can use the "fragment" function to append.
|
| 450 |
|
|
> e${EMULATION_NAME}.c
|
| 451 |
|
|
source_em ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em
|
