#!/bin/sh
# genscripts.sh - generate the ld-emulation-target specific files
+# Copyright 2007, 2008 Free Software Foundation, Inc.
#
-# Usage: genscripts.sh srcdir libdir exec_prefix \
-# host target target_alias default_emulation \
-# native_lib_dirs use_sysroot this_emulation tool_dir
+# This file is part of the Gnu Linker.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GLD; see the file COPYING. If not, write to the Free
+# Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+# 02110-1301, USA.
+#
+# Usage: genscripts_extra.sh \
+# srcdir \
+# libdir \
+# prefix \
+# exec_prefix \
+# host \
+# target \
+# target_alias \
+# default_emulation \
+# native_lib_dirs \
+# use_sysroot \
+# this_emulation \
+# optional:
+# tool_dir \
+# customizer_script
#
# Sample usage:
-# genscripts.sh /djm/ld-devo/devo/ld /usr/local/lib /usr/local \
-# sparc-sun-sunos4.1.3 sparc-sun-sunos4.1.3 sparc-sun-sunos4.1.3 sun4 \
-# "" no sun3 sparc-sun-sunos4.1.3
-# produces sun3.x sun3.xbn sun3.xn sun3.xr sun3.xu em_sun3.c
+#
+# genscripts_extra.sh \
+# /sources/ld \
+# /usr/local/lib \
+# /usr/local \
+# /usr/local \
+# sparc-sun-sunos4.1.3 \
+# sparc-sun-sunos4.1.3 \
+# sparc-sun-sunos4.1.3 \
+# sun4 \
+# "" \
+# no \
+# sun3 \
+# sparc-sun-sunos4.1.3 \
+# sparc.sh
+#
+# produces the linker scripts:
+#
+# sun3.x [default linker script]
+# sun3.xbn [used when the linker is invoked with "-N"]
+# sun3.xn [used when the linker is invoked with "-n"]
+# sun3.xr [used when the linker is invoked with "-r"]
+# sun3.xu [used when the linker is invoked with "-Ur"]
+# and maybe:
+# sun3.xc [used when the linker is invoked with "-z combreloc"]
+# sun3.xsc [used when the linker is invoked with "--shared"]
+# sun3.xdc [used when the linker is invoked with "-pie"]
+# sun3.xa [used when the linker is invoked with "--enable-auto-import"]
+#
+# It also produced the C source file:
+#
+# em_sun3.c
+#
+# which is then compiled into the linker.
+#
+# The linker scripts are created by running the shell script
+# /sources/ld/emulparams/sparc.sh to set the value of ${SCRIPT_NAME}
+# (and any other variables it wants to). ${SCRIPT_NAME} is then
+# invoked with a variable called ${LD_FLAG} to tell it which version
+# of the linker script to create.
+
srcdir=$1
libdir=$2
-exec_prefix=$3
-host=$4
-target=$5
-target_alias=$6
-EMULATION_LIBPATH=$7
-NATIVE_LIB_DIRS=$8
-use_sysroot=$9
+prefix=$3
+exec_prefix=$4
+host=$5
+target=$6
+target_alias=$7
+EMULATION_LIBPATH=$8
+NATIVE_LIB_DIRS=$9
shift 9
-EMULATION_NAME=$1
-shift
-# Can't use ${1:-$target_alias} here due to an Ultrix shell bug.
-if [ "x$1" = "x" ] ; then
+use_sysroot=$1
+EMULATION_NAME=$2
+TOOL_LIB=$3
+CUSTOMIZER_SCRIPT=$4
+
+# Can't use ${TOOL_LIB:-$target_alias} here due to an Ultrix shell bug.
+if [ "x${TOOL_LIB}" = "x" ] ; then
tool_lib=${exec_prefix}/${target_alias}/lib
else
- tool_lib=${exec_prefix}/$1/lib
+ tool_lib=${exec_prefix}/${TOOL_LIB}/lib
+fi
+
+if [ "x${CUSTOMIZER_SCRIPT}" = "x" ] ; then
+ CUSTOMIZER_SCRIPT=${EMULATION_NAME}
fi
+CUSTOMIZER_SCRIPT="${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh"
# Include the emulation-specific parameters:
-. ${srcdir}/emulparams/${EMULATION_NAME}.sh
+. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
if test -d ldscripts; then
true
if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes ] ; then
LIB_PATH2=
- if [ x"$use_sysroot" != xyes ] ; then
- LIB_PATH2=${libdir}
+
+ libs=${NATIVE_LIB_DIRS}
+ if [ "x${use_sysroot}" != "xyes" ] ; then
+ case " ${libs} " in
+ *" ${libdir} "*) ;;
+ *) libs="${libdir} ${libs}" ;;
+ esac
+ case " ${libs} " in
+ *" ${tool_lib} "*) ;;
+ *) libs="${tool_lib} ${libs}" ;;
+ esac
fi
- for lib in ${NATIVE_LIB_DIRS}; do
+
+ for lib in ${libs}; do
# The "=" is harmless if we aren't using a sysroot, but also needless.
if [ "x${use_sysroot}" = "xyes" ] ; then
lib="=${lib}"
esac
fi
done
+
case :${LIB_PATH}:${LIB_PATH2}: in
*:: | ::*) LIB_PATH=${LIB_PATH}${LIB_PATH2} ;;
*) LIB_PATH=${LIB_PATH}:${LIB_PATH2} ;;
esac
-fi
+ # For multilib'ed targets, ensure both ${target_alias}/lib${LIBPATH_SUFFIX}
+ # and ${TOOL_LIB}/lib${LIBPATH_SUFFIX} are in the default search path, because
+ # 64bit libraries may be in both places, depending on cross-development
+ # setup method (e.g.: /usr/s390x-linux/lib64 vs /usr/s390-linux/lib64)
+ case "${LIBPATH_SUFFIX}:${tool_lib}" in
+ :*) ;;
+ *:*${LIBPATH_SUFFIX}) ;;
+ *)
+ paths="${exec_prefix}/${target_alias}/lib${LIBPATH_SUFFIX}"
+ if [ x"${TOOL_LIB}" != x ]; then
+ paths="${paths} ${exec_prefix}/${TOOL_LIB}/lib${LIBPATH_SUFFIX}"
+ fi
+ for path in $paths; do
+ case :${LIB_PATH}: in
+ ::: | *:${path}:*) ;;
+ *) LIB_PATH=${path}:${LIB_PATH} ;;
+ esac
+ done
+ ;;
+ esac
+fi
# Always search $(tooldir)/lib, aka /usr/local/TARGET/lib, except for
# sysrooted configurations and when LIBPATH=":".
::) LIB_PATH=${tool_lib} ;;
*) LIB_PATH=${tool_lib}:${LIB_PATH} ;;
esac
+ # For multilib targets, search both $tool_lib dirs
+ if [ "x${LIBPATH_SUFFIX}" != "x" ] ; then
+ case :${LIB_PATH}: in
+ ::: | *:${tool_lib}${LIBPATH_SUFFIX}:*) ;;
+ ::) LIB_PATH=${tool_lib}${LIBPATH_SUFFIX} ;;
+ *) LIB_PATH=${tool_lib}${LIBPATH_SUFFIX}:${LIB_PATH} ;;
+ esac
+ fi
fi
LIB_SEARCH_DIRS=`echo ${LIB_PATH} | sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`
# We need it for testsuite.
-case " $EMULATION_LIBPATH " in
- *" ${EMULATION_NAME} "*)
+set $EMULATION_LIBPATH
+if [ "x$1" = "x$EMULATION_NAME" ]; then
test -d tmpdir || mkdir tmpdir
- test -f tmpdir/libpath.exp || \
+ rm -f tmpdir/libpath.exp
echo "set libpath \"${LIB_PATH}\"" | sed -e 's/:/ /g' > tmpdir/libpath.exp
- ;;
-esac
+fi
# Generate 5 or 6 script files from a master script template in
# ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6
SEGMENT_SIZE=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}}
# Determine DATA_ALIGNMENT for the 5 variants, using
-# values specified in the emulparams/<emulation>.sh file or default.
+# values specified in the emulparams/<script_to_run>.sh file or default.
DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}"
DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}"
DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
( echo "/* Script for ld -r: link without relocation */"
- . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+ . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xr
DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
CONSTRUCTING=" "
( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
- . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+ . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xu
DATA_ALIGNMENT=${DATA_ALIGNMENT_}
RELOCATING=" "
( echo "/* Default linker script, for normal executables */"
- . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+ . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.x
LD_FLAG=n
DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
-TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}}
( echo "/* Script for -n: mix text and data on same page */"
- . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+ . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xn
LD_FLAG=N
DATA_ALIGNMENT=${DATA_ALIGNMENT_N}
( echo "/* Script for -N: mix text and data on same page; don't align data */"
- . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+ . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xbn
LD_FLAG=c
COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
( echo "/* Script for -z combreloc: combine and sort reloc sections */"
- . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+ . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xc
rm -f ${COMBRELOC}
+ LD_FLAG=w
+ RELRO_NOW=" "
+ COMBRELOC=ldscripts/${EMULATION_NAME}.xw.tmp
+ ( echo "/* Script for -z combreloc -z now -z relro: combine and sort reloc sections */"
+ . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
+ . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+ ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xw
+ rm -f ${COMBRELOC}
COMBRELOC=
+ unset RELRO_NOW
fi
if test -n "$GENERATE_SHLIB_SCRIPT"; then
LD_FLAG=shared
DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
CREATE_SHLIB=" "
- # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR.
(
echo "/* Script for ld --shared: link shared library */"
- . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+ . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xs
if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
LD_FLAG=cshared
DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
- COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
+ COMBRELOC=ldscripts/${EMULATION_NAME}.xsc.tmp
( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
- . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+ . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xsc
rm -f ${COMBRELOC}
+ LD_FLAG=wshared
+ RELRO_NOW=" "
+ COMBRELOC=ldscripts/${EMULATION_NAME}.xsw.tmp
+ ( echo "/* Script for --shared -z combreloc -z now -z relro: shared library, combine & sort relocs */"
+ . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
+ . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+ ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xsw
+ rm -f ${COMBRELOC}
COMBRELOC=
+ unset RELRO_NOW
fi
unset CREATE_SHLIB
fi
LD_FLAG=pie
DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
CREATE_PIE=" "
- # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR.
(
echo "/* Script for ld -pie: link position independent executable */"
- . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+ . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xd
if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
LD_FLAG=cpie
DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
- COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
+ COMBRELOC=ldscripts/${EMULATION_NAME}.xdc.tmp
( echo "/* Script for -pie -z combreloc: position independent executable, combine & sort relocs */"
- . ${srcdir}/emulparams/${EMULATION_NAME}.sh
+ . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xdc
rm -f ${COMBRELOC}
+ LD_FLAG=wpie
+ RELRO_NOW=" "
+ COMBRELOC=ldscripts/${EMULATION_NAME}.xdw.tmp
+ ( echo "/* Script for -pie -z combreloc -z now -z relro: position independent executable, combine & sort relocs */"
+ . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
+ . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+ ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xdw
+ rm -f ${COMBRELOC}
COMBRELOC=
+ unset RELRO_NOW
fi
unset CREATE_PIE
fi
+if test -n "$GENERATE_AUTO_IMPORT_SCRIPT"; then
+ LD_FLAG=auto_import
+ DATA_ALIGNMENT=${DATA_ALIGNMENT_}
+ (
+ echo "/* Script for ld --enable-auto-import: Like the default script except read only data is placed into .data */"
+ . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
+ . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
+ ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xa
+fi
+
case " $EMULATION_LIBPATH " in
*" ${EMULATION_NAME} "*) COMPILE_IN=true;;
esac
+# PR ld/5652:
+# Determine if the shell has support for the variable BASH_LINENO.
+# When it is the case, it is only available inside functions.
+has_lineno()
+{
+ test "x$BASH_LINENO" != "x"
+}
+
+# Enable accruate error source in the compiler error messages, if possible.
+if has_lineno; then
+ . ${srcdir}/genscrba.sh
+else
+ source_em()
+ {
+ . $1
+ }
+ fragment()
+ {
+ cat >> e${EMULATION_NAME}.c
+ }
+fi
+
# Generate e${EMULATION_NAME}.c.
-. ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em
+# Start with an empty file, then the sourced .em script
+# can use the "fragment" function to append.
+> e${EMULATION_NAME}.c
+source_em ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em