[deliverable/binutils-gdb.git] / ld / genscripts.sh

#!/bin/sh
# genscripts.sh - generate the ld-emulation-target specific files
# Copyright (C) 2004-2016 Free Software Foundation, Inc.
#
# 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 \
#          enable_initfini_array \
#          this_emulation \
# optional:
#          tool_dir
#
# Sample usage:
#
#   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
prefix=$3
exec_prefix=$4
host=$5
target=$6
target_alias=$7
EMULATION_LIBPATH=$8
NATIVE_LIB_DIRS=$9
shift 9
use_sysroot=$1
ENABLE_INITFINI_ARRAY=$2
EMULATION_NAME=$3
TOOL_LIB=$4

# Include the emulation-specific parameters:
CUSTOMIZER_SCRIPT="${srcdir}/emulparams/${EMULATION_NAME}.sh"
. ${CUSTOMIZER_SCRIPT}

if test -d ldscripts; then
  true
else
  mkdir ldscripts
fi

# Set some flags for the emultempl scripts.  USE_LIBPATH will
# be set for any libpath-using emulation; NATIVE will be set for a
# libpath-using emulation where ${host} = ${target}.  NATIVE
# may already have been set by the emulparams file, but that's OK
# (it'll just get set to "yes" twice).

case " $EMULATION_LIBPATH " in
  *" ${EMULATION_NAME} "*)
    if [ "x${host}" = "x${target}" ] ; then
      NATIVE=yes
      USE_LIBPATH=yes
    elif [ "x${use_sysroot}" = "xyes" ] ; then
      USE_LIBPATH=yes
    fi
    ;;
esac

# If the emulparams file sets NATIVE, make sure USE_LIBPATH is set also.
if test "x$NATIVE" = "xyes" ; then
  USE_LIBPATH=yes
fi

# Set the library search path, for libraries named by -lfoo.
# If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used.
# Otherwise, the default is set here.
#
# The format is the usual list of colon-separated directories.
# To force a logically empty LIB_PATH, do LIBPATH=":".
#
# If we are using a sysroot, prefix library paths with "=" to indicate this.
#
# If the emulparams file set LIBPATH_SUFFIX, prepend an extra copy of
# the library path with the suffix applied.

# Paths with LIBPATH_SUFFIX
lib_path1=
# Paths without LIBPATH_SUFFIX
lib_path2=
if [ "${LIB_PATH}" != ":" ] ; then
  lib_path2=${LIB_PATH}
fi

# Add args to lib_path1 and lib_path2, discarding any duplicates
append_to_lib_path()
{
  if [ $# != 0 ]; then
    for lib in "$@"; do
      # The "=" is harmless if we aren't using a sysroot, but also needless.
      if [ "x${use_sysroot}" = "xyes" ] ; then
	lib="=${lib}"
      fi
      skip_lib=no
      if test -n "${LIBPATH_SUFFIX}"; then
	case "${lib}" in
	  *${LIBPATH_SUFFIX})
	    case :${lib_path1}: in
	      *:${lib}:*) ;;
	      ::) lib_path1=${lib} ;;
	      *) lib_path1=${lib_path1}:${lib} ;;
	    esac ;;
	  *)
	    if test -n "${LIBPATH_SUFFIX_SKIP}"; then
	      case "${lib}" in
		*${LIBPATH_SUFFIX_SKIP}) skip_lib=yes ;;
	      esac
	    fi
	    if test "${skip_lib}" = "no"; then
	      case :${lib_path1}: in
		*:${lib}${LIBPATH_SUFFIX}:*) ;;
		::) lib_path1=${lib}${LIBPATH_SUFFIX} ;;
	        *) lib_path1=${lib_path1}:${lib}${LIBPATH_SUFFIX} ;;
	      esac
	    fi ;;
	esac
      fi
      if test "${skip_lib}" = "no"; then
	case :${lib_path1}:${lib_path2}: in
	  *:${lib}:*) ;;
	  *::) lib_path2=${lib} ;;
	  *) lib_path2=${lib_path2}:${lib} ;;
	esac
      fi
    done
  fi
}

# Always search $(tooldir)/lib, aka /usr/local/TARGET/lib when native
# except when LIBPATH=":".
if [ "${LIB_PATH}" != ":" ] ; then
  libs=
  if [ "x${TOOL_LIB}" = "x" ] ; then
    if [ "x${NATIVE}" = "xyes" ] ; then
      libs="${exec_prefix}/${target_alias}/lib"
    fi
  else
    # 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 "${NATIVE}:${LIBPATH_SUFFIX}:${TOOL_LIB}" in
      :* | *::* | *:*:*${LIBPATH_SUFFIX}) ;;
      *) libs="${exec_prefix}/${target_alias}/lib${LIBPATH_SUFFIX}" ;;
    esac
    libs="${exec_prefix}/${TOOL_LIB}/lib ${libs}"
  fi
  append_to_lib_path ${libs}
fi

if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes ] ; then
  libs=${NATIVE_LIB_DIRS}
  if [ "x${NATIVE}" = "xyes" ] ; then
    case " ${libs} " in
      *" ${libdir} "*) ;;
      *) libs="${libdir} ${libs}" ;;
    esac
  fi
  append_to_lib_path ${libs}
fi

case :${lib_path1}:${lib_path2}: in
  *:: | ::*) LIB_PATH=${lib_path1}${lib_path2} ;;
  *) LIB_PATH=${lib_path1}:${lib_path2} ;;
esac

LIB_SEARCH_DIRS=`echo ${LIB_PATH} | sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`

# We need it for testsuite.
set $EMULATION_LIBPATH
if [ "x$1" = "x$EMULATION_NAME" ]; then
    test -d tmpdir || mkdir tmpdir
    rm -f tmpdir/libpath.exp
    echo "set libpath \"${LIB_PATH}\"" | sed -e 's/:/ /g' > tmpdir/libpath.exp
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
# script files is actually used depends on command line options given
# to ld.  (SCRIPT_NAME was set in the emulparams_file.)
#
# A .x script file is the default script.
# A .xr script is for linking without relocation (-r flag).
# A .xu script is like .xr, but *do* create constructors (-Ur flag).
# A .xn script is for linking with -n flag (mix text and data on same page).
# A .xbn script is for linking with -N flag (mix text and data on same page).
# A .xs script is for generating a shared library with the --shared
#   flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the
#   emulation parameters.
# A .xc script is for linking with -z combreloc; it is only generated if
#   $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
#   $SCRIPT_NAME is "elf".
# A .xsc script is for linking with --shared -z combreloc; it is generated
#   if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
#   $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation
#   parameters too.

if [ "x$SCRIPT_NAME" = "xelf" ]; then
  GENERATE_COMBRELOC_SCRIPT=yes
fi

SEGMENT_SIZE=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}}

# Determine DATA_ALIGNMENT for the 5 variants, using
# 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-${DATA_ALIGNMENT_}}"
DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}"
DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}"
DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"

LD_FLAG=r
DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
( echo "/* Script for ld -r: link without relocation */"
  . ${CUSTOMIZER_SCRIPT}
  . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xr

LD_FLAG=u
DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
CONSTRUCTING=" "
( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
  . ${CUSTOMIZER_SCRIPT}
  . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xu

LD_FLAG=
DATA_ALIGNMENT=${DATA_ALIGNMENT_}
RELOCATING=" "
( echo "/* Default linker script, for normal executables */"
  . ${CUSTOMIZER_SCRIPT}
  . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.x

LD_FLAG=n
DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
( echo "/* Script for -n: mix text and data on same page */"
  . ${CUSTOMIZER_SCRIPT}
  . ${srcdir}/scripttempl/${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 */"
  . ${CUSTOMIZER_SCRIPT}
  . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xbn

if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
  DATA_ALIGNMENT=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}}
  LD_FLAG=c
  COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
  ( echo "/* Script for -z combreloc: combine and sort reloc sections */"
    . ${CUSTOMIZER_SCRIPT}
    . ${srcdir}/scripttempl/${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}
    . ${srcdir}/scripttempl/${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=" "
  (
    echo "/* Script for ld --shared: link shared library */"
    . ${CUSTOMIZER_SCRIPT}
    . ${srcdir}/scripttempl/${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}.xsc.tmp
    ( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
      . ${CUSTOMIZER_SCRIPT}
      . ${srcdir}/scripttempl/${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}
      . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
    ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xsw
    rm -f ${COMBRELOC}
    COMBRELOC=
    unset RELRO_NOW
  fi
  unset CREATE_SHLIB
fi

if test -n "$GENERATE_PIE_SCRIPT"; then
  LD_FLAG=pie
  DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
  CREATE_PIE=" "
  (
    echo "/* Script for ld -pie: link position independent executable */"
    . ${CUSTOMIZER_SCRIPT}
    . ${srcdir}/scripttempl/${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}.xdc.tmp
    ( echo "/* Script for -pie -z combreloc: position independent executable, combine & sort relocs */"
      . ${CUSTOMIZER_SCRIPT}
      . ${srcdir}/scripttempl/${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}
      . ${srcdir}/scripttempl/${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}
    . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
  ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xa
fi

case "$COMPILE_IN: $EMULATION_LIBPATH " in
    :*" ${EMULATION_NAME} "*) COMPILE_IN=yes;;
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${EMULATION_NAME}.c.
# Start with an empty file, then the sourced .em script
# can use the "fragment" function to append.
> e${EMULATION_NAME}.c
source_em ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em
Commit	Line	Data
	1	#!/bin/sh
	2	# genscripts.sh - generate the ld-emulation-target specific files
	3	# Copyright (C) 2004-2016 Free Software Foundation, Inc.
	4	#
	5	# This file is part of the Gnu Linker.
	6	#
	7	# This program is free software; you can redistribute it and/or modify
	8	# it under the terms of the GNU General Public License as published by
	9	# the Free Software Foundation; either version 3, or (at your option)
	10	# any later version.
	11	#
	12	# This program is distributed in the hope that it will be useful,
	13	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	# GNU General Public License for more details.
	16	#
	17	# You should have received a copy of the GNU General Public License
	18	# along with GLD; see the file COPYING. If not, write to the Free
	19	# Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
	20	# 02110-1301, USA.
	21	#
	22	# Usage: genscripts_extra.sh \
	23	# srcdir \
	24	# libdir \
	25	# prefix \
	26	# exec_prefix \
	27	# host \
	28	# target \
	29	# target_alias \
	30	# default_emulation \
	31	# native_lib_dirs \
	32	# use_sysroot \
	33	# enable_initfini_array \
	34	# this_emulation \
	35	# optional:
	36	# tool_dir
	37	#
	38	# Sample usage:
	39	#
	40	# genscripts_extra.sh \
	41	# /sources/ld \
	42	# /usr/local/lib \
	43	# /usr/local \
	44	# /usr/local \
	45	# sparc-sun-sunos4.1.3 \
	46	# sparc-sun-sunos4.1.3 \
	47	# sparc-sun-sunos4.1.3 \
	48	# sun4 \
	49	# "" \
	50	# no \
	51	# sun3 \
	52	# sparc-sun-sunos4.1.3 \
	53	# sparc.sh
	54	#
	55	# produces the linker scripts:
	56	#
	57	# sun3.x [default linker script]
	58	# sun3.xbn [used when the linker is invoked with "-N"]
	59	# sun3.xn [used when the linker is invoked with "-n"]
	60	# sun3.xr [used when the linker is invoked with "-r"]
	61	# sun3.xu [used when the linker is invoked with "-Ur"]
	62	# and maybe:
	63	# sun3.xc [used when the linker is invoked with "-z combreloc"]
	64	# sun3.xsc [used when the linker is invoked with "--shared"]
	65	# sun3.xdc [used when the linker is invoked with "-pie"]
	66	# sun3.xa [used when the linker is invoked with "--enable-auto-import"]
	67	#
	68	# It also produced the C source file:
	69	#
	70	# em_sun3.c
	71	#
	72	# which is then compiled into the linker.
	73	#
	74	# The linker scripts are created by running the shell script
	75	# /sources/ld/emulparams/sparc.sh to set the value of ${SCRIPT_NAME}
	76	# (and any other variables it wants to). ${SCRIPT_NAME} is then
	77	# invoked with a variable called ${LD_FLAG} to tell it which version
	78	# of the linker script to create.
	79
	80
	81	srcdir=$1
	82	libdir=$2
	83	prefix=$3
	84	exec_prefix=$4
	85	host=$5
	86	target=$6
	87	target_alias=$7
	88	EMULATION_LIBPATH=$8
	89	NATIVE_LIB_DIRS=$9
	90	shift 9
	91	use_sysroot=$1
	92	ENABLE_INITFINI_ARRAY=$2
	93	EMULATION_NAME=$3
	94	TOOL_LIB=$4
	95
	96	# Include the emulation-specific parameters:
	97	CUSTOMIZER_SCRIPT="${srcdir}/emulparams/${EMULATION_NAME}.sh"
	98	. ${CUSTOMIZER_SCRIPT}
	99
	100	if test -d ldscripts; then
	101	true
	102	else
	103	mkdir ldscripts
	104	fi
	105
	106	# Set some flags for the emultempl scripts. USE_LIBPATH will
	107	# be set for any libpath-using emulation; NATIVE will be set for a
	108	# libpath-using emulation where ${host} = ${target}. NATIVE
	109	# may already have been set by the emulparams file, but that's OK
	110	# (it'll just get set to "yes" twice).
	111
	112	case " $EMULATION_LIBPATH " in
	113	" ${EMULATION_NAME} ")
	114	if [ "x${host}" = "x${target}" ] ; then
	115	NATIVE=yes
	116	USE_LIBPATH=yes
	117	elif [ "x${use_sysroot}" = "xyes" ] ; then
	118	USE_LIBPATH=yes
	119	fi
	120	;;
	121	esac
	122
	123	# If the emulparams file sets NATIVE, make sure USE_LIBPATH is set also.
	124	if test "x$NATIVE" = "xyes" ; then
	125	USE_LIBPATH=yes
	126	fi
	127
	128	# Set the library search path, for libraries named by -lfoo.
	129	# If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used.
	130	# Otherwise, the default is set here.
	131	#
	132	# The format is the usual list of colon-separated directories.
	133	# To force a logically empty LIB_PATH, do LIBPATH=":".
	134	#
	135	# If we are using a sysroot, prefix library paths with "=" to indicate this.
	136	#
	137	# If the emulparams file set LIBPATH_SUFFIX, prepend an extra copy of
	138	# the library path with the suffix applied.
	139
	140	# Paths with LIBPATH_SUFFIX
	141	lib_path1=
	142	# Paths without LIBPATH_SUFFIX
	143	lib_path2=
	144	if [ "${LIB_PATH}" != ":" ] ; then
	145	lib_path2=${LIB_PATH}
	146	fi
	147
	148	# Add args to lib_path1 and lib_path2, discarding any duplicates
	149	append_to_lib_path()
	150	{
	151	if [ $# != 0 ]; then
	152	for lib in "$@"; do
	153	# The "=" is harmless if we aren't using a sysroot, but also needless.
	154	if [ "x${use_sysroot}" = "xyes" ] ; then
	155	lib="=${lib}"
	156	fi
	157	skip_lib=no
	158	if test -n "${LIBPATH_SUFFIX}"; then
	159	case "${lib}" in
	160	*${LIBPATH_SUFFIX})
	161	case :${lib_path1}: in
	162	:${lib}:) ;;
	163	::) lib_path1=${lib} ;;
	164	*) lib_path1=${lib_path1}:${lib} ;;
	165	esac ;;
	166	*)
	167	if test -n "${LIBPATH_SUFFIX_SKIP}"; then
	168	case "${lib}" in
	169	*${LIBPATH_SUFFIX_SKIP}) skip_lib=yes ;;
	170	esac
	171	fi
	172	if test "${skip_lib}" = "no"; then
	173	case :${lib_path1}: in
	174	:${lib}${LIBPATH_SUFFIX}:) ;;
	175	::) lib_path1=${lib}${LIBPATH_SUFFIX} ;;
	176	*) lib_path1=${lib_path1}:${lib}${LIBPATH_SUFFIX} ;;
	177	esac
	178	fi ;;
	179	esac
	180	fi
	181	if test "${skip_lib}" = "no"; then
	182	case :${lib_path1}:${lib_path2}: in
	183	:${lib}:) ;;
	184	*::) lib_path2=${lib} ;;
	185	*) lib_path2=${lib_path2}:${lib} ;;
	186	esac
	187	fi
	188	done
	189	fi
	190	}
	191
	192	# Always search $(tooldir)/lib, aka /usr/local/TARGET/lib when native
	193	# except when LIBPATH=":".
	194	if [ "${LIB_PATH}" != ":" ] ; then
	195	libs=
	196	if [ "x${TOOL_LIB}" = "x" ] ; then
	197	if [ "x${NATIVE}" = "xyes" ] ; then
	198	libs="${exec_prefix}/${target_alias}/lib"
	199	fi
	200	else
	201	# For multilib'ed targets, ensure both ${target_alias}/lib${LIBPATH_SUFFIX}
	202	# and ${TOOL_LIB}/lib${LIBPATH_SUFFIX} are in the default search path,
	203	# because 64bit libraries may be in both places, depending on
	204	# cross-development setup method (e.g.: /usr/s390x-linux/lib64
	205	# vs. /usr/s390-linux/lib64)
	206	case "${NATIVE}:${LIBPATH_SUFFIX}:${TOOL_LIB}" in
	207	:* \| :: \| ::*${LIBPATH_SUFFIX}) ;;
	208	*) libs="${exec_prefix}/${target_alias}/lib${LIBPATH_SUFFIX}" ;;
	209	esac
	210	libs="${exec_prefix}/${TOOL_LIB}/lib ${libs}"
	211	fi
	212	append_to_lib_path ${libs}
	213	fi
	214
	215	if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes ] ; then
	216	libs=${NATIVE_LIB_DIRS}
	217	if [ "x${NATIVE}" = "xyes" ] ; then
	218	case " ${libs} " in
	219	" ${libdir} ") ;;
	220	*) libs="${libdir} ${libs}" ;;
	221	esac
	222	fi
	223	append_to_lib_path ${libs}
	224	fi
	225
	226	case :${lib_path1}:${lib_path2}: in
	227	:: \| ::) LIB_PATH=${lib_path1}${lib_path2} ;;
	228	*) LIB_PATH=${lib_path1}:${lib_path2} ;;
	229	esac
	230
	231	LIB_SEARCH_DIRS=`echo ${LIB_PATH} \| sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`
	232
	233	# We need it for testsuite.
	234	set $EMULATION_LIBPATH
	235	if [ "x$1" = "x$EMULATION_NAME" ]; then
	236	test -d tmpdir \|\| mkdir tmpdir
	237	rm -f tmpdir/libpath.exp
	238	echo "set libpath \"${LIB_PATH}\"" \| sed -e 's/:/ /g' > tmpdir/libpath.exp
	239	fi
	240
	241	# Generate 5 or 6 script files from a master script template in
	242	# ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6
	243	# script files is actually used depends on command line options given
	244	# to ld. (SCRIPT_NAME was set in the emulparams_file.)
	245	#
	246	# A .x script file is the default script.
	247	# A .xr script is for linking without relocation (-r flag).
	248	# A .xu script is like .xr, but do create constructors (-Ur flag).
	249	# A .xn script is for linking with -n flag (mix text and data on same page).
	250	# A .xbn script is for linking with -N flag (mix text and data on same page).
	251	# A .xs script is for generating a shared library with the --shared
	252	# flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the
	253	# emulation parameters.
	254	# A .xc script is for linking with -z combreloc; it is only generated if
	255	# $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
	256	# $SCRIPT_NAME is "elf".
	257	# A .xsc script is for linking with --shared -z combreloc; it is generated
	258	# if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
	259	# $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation
	260	# parameters too.
	261
	262	if [ "x$SCRIPT_NAME" = "xelf" ]; then
	263	GENERATE_COMBRELOC_SCRIPT=yes
	264	fi
	265
	266	SEGMENT_SIZE=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}}
	267
	268	# Determine DATA_ALIGNMENT for the 5 variants, using
	269	# values specified in the emulparams/<script_to_run>.sh file or default.
	270
	271	DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}"
	272	DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}"
	273	DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}"
	274	DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}"
	275	DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"
	276
	277	LD_FLAG=r
	278	DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
	279	DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
	280	( echo "/* Script for ld -r: link without relocation */"
	281	. ${CUSTOMIZER_SCRIPT}
	282	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	283	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xr
	284
	285	LD_FLAG=u
	286	DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
	287	CONSTRUCTING=" "
	288	( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
	289	. ${CUSTOMIZER_SCRIPT}
	290	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	291	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xu
	292
	293	LD_FLAG=
	294	DATA_ALIGNMENT=${DATA_ALIGNMENT_}
	295	RELOCATING=" "
	296	( echo "/* Default linker script, for normal executables */"
	297	. ${CUSTOMIZER_SCRIPT}
	298	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	299	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.x
	300
	301	LD_FLAG=n
	302	DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
	303	( echo "/* Script for -n: mix text and data on same page */"
	304	. ${CUSTOMIZER_SCRIPT}
	305	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	306	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xn
	307
	308	LD_FLAG=N
	309	DATA_ALIGNMENT=${DATA_ALIGNMENT_N}
	310	( echo "/* Script for -N: mix text and data on same page; don't align data */"
	311	. ${CUSTOMIZER_SCRIPT}
	312	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	313	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xbn
	314
	315	if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
	316	DATA_ALIGNMENT=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}}
	317	LD_FLAG=c
	318	COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
	319	( echo "/* Script for -z combreloc: combine and sort reloc sections */"
	320	. ${CUSTOMIZER_SCRIPT}
	321	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	322	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xc
	323	rm -f ${COMBRELOC}
	324	LD_FLAG=w
	325	RELRO_NOW=" "
	326	COMBRELOC=ldscripts/${EMULATION_NAME}.xw.tmp
	327	( echo "/* Script for -z combreloc -z now -z relro: combine and sort reloc sections */"
	328	. ${CUSTOMIZER_SCRIPT}
	329	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	330	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xw
	331	rm -f ${COMBRELOC}
	332	COMBRELOC=
	333	unset RELRO_NOW
	334	fi
	335
	336	if test -n "$GENERATE_SHLIB_SCRIPT"; then
	337	LD_FLAG=shared
	338	DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
	339	CREATE_SHLIB=" "
	340	(
	341	echo "/* Script for ld --shared: link shared library */"
	342	. ${CUSTOMIZER_SCRIPT}
	343	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	344	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xs
	345	if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
	346	LD_FLAG=cshared
	347	DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
	348	COMBRELOC=ldscripts/${EMULATION_NAME}.xsc.tmp
	349	( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
	350	. ${CUSTOMIZER_SCRIPT}
	351	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	352	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xsc
	353	rm -f ${COMBRELOC}
	354	LD_FLAG=wshared
	355	RELRO_NOW=" "
	356	COMBRELOC=ldscripts/${EMULATION_NAME}.xsw.tmp
	357	( echo "/* Script for --shared -z combreloc -z now -z relro: shared library, combine & sort relocs */"
	358	. ${CUSTOMIZER_SCRIPT}
	359	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	360	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xsw
	361	rm -f ${COMBRELOC}
	362	COMBRELOC=
	363	unset RELRO_NOW
	364	fi
	365	unset CREATE_SHLIB
	366	fi
	367
	368	if test -n "$GENERATE_PIE_SCRIPT"; then
	369	LD_FLAG=pie
	370	DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
	371	CREATE_PIE=" "
	372	(
	373	echo "/* Script for ld -pie: link position independent executable */"
	374	. ${CUSTOMIZER_SCRIPT}
	375	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	376	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xd
	377	if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
	378	LD_FLAG=cpie
	379	DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
	380	COMBRELOC=ldscripts/${EMULATION_NAME}.xdc.tmp
	381	( echo "/* Script for -pie -z combreloc: position independent executable, combine & sort relocs */"
	382	. ${CUSTOMIZER_SCRIPT}
	383	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	384	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xdc
	385	rm -f ${COMBRELOC}
	386	LD_FLAG=wpie
	387	RELRO_NOW=" "
	388	COMBRELOC=ldscripts/${EMULATION_NAME}.xdw.tmp
	389	( echo "/* Script for -pie -z combreloc -z now -z relro: position independent executable, combine & sort relocs */"
	390	. ${CUSTOMIZER_SCRIPT}
	391	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	392	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xdw
	393	rm -f ${COMBRELOC}
	394	COMBRELOC=
	395	unset RELRO_NOW
	396	fi
	397	unset CREATE_PIE
	398	fi
	399
	400	if test -n "$GENERATE_AUTO_IMPORT_SCRIPT"; then
	401	LD_FLAG=auto_import
	402	DATA_ALIGNMENT=${DATA_ALIGNMENT_}
	403	(
	404	echo "/* Script for ld --enable-auto-import: Like the default script except read only data is placed into .data */"
	405	. ${CUSTOMIZER_SCRIPT}
	406	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	407	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xa
	408	fi
	409
	410	case "$COMPILE_IN: $EMULATION_LIBPATH " in
	411	:" ${EMULATION_NAME} ") COMPILE_IN=yes;;
	412	esac
	413
	414	# PR ld/5652:
	415	# Determine if the shell has support for the variable BASH_LINENO.
	416	# When it is the case, it is only available inside functions.
	417	has_lineno()
	418	{
	419	test "x$BASH_LINENO" != "x"
	420	}
	421
	422	# Enable accruate error source in the compiler error messages, if possible.
	423	if has_lineno; then
	424	. ${srcdir}/genscrba.sh
	425	else
	426	source_em()
	427	{
	428	. $1
	429	}
	430	fragment()
	431	{
	432	cat >> e${EMULATION_NAME}.c
	433	}
	434	fi
	435
	436	# Generate e${EMULATION_NAME}.c.
	437	# Start with an empty file, then the sourced .em script
	438	# can use the "fragment" function to append.
	439	> e${EMULATION_NAME}.c
	440	source_em ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em