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

#!/bin/sh
# genscripts.sh - generate the ld-emulation-target specific files
# Copyright 2004, 2006, 2007, 2008, 2009 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 \
#          this_emulation \
# optional:
#          tool_dir \
#          customizer_script
#
# 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
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}/${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:
. ${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.

if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes ] ; then
  LIB_PATH2=

  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 ${libs}; do
    # The "=" is harmless if we aren't using a sysroot, but also needless.
    if [ "x${use_sysroot}" = "xyes" ] ; then
      lib="=${lib}"
    fi
    addsuffix=
    case "${LIBPATH_SUFFIX}:${lib}" in
      :*) ;;
      *:*${LIBPATH_SUFFIX}) ;;
      *) addsuffix=yes ;;
    esac
    if test -n "$addsuffix"; then
      case :${LIB_PATH}: in
	*:${lib}${LIBPATH_SUFFIX}:*) ;;
	::) LIB_PATH=${lib}${LIBPATH_SUFFIX} ;;
	*) LIB_PATH=${LIB_PATH}:${lib}${LIBPATH_SUFFIX} ;;
      esac
      case :${LIB_PATH}:${LIB_PATH2}: in
	*:${lib}:*) ;;
	*::) LIB_PATH2=${lib} ;;
	*) LIB_PATH2=${LIB_PATH2}:${lib} ;;
      esac
    else
      case :${LIB_PATH2}: in
	*:${lib}:*) ;;
	::) LIB_PATH2=${lib} ;;
	*) LIB_PATH2=${LIB_PATH2}:${lib} ;;
      esac
    fi
  done

  case :${LIB_PATH}:${LIB_PATH2}: in
    *:: | ::*) LIB_PATH=${LIB_PATH}${LIB_PATH2} ;;
    *) LIB_PATH=${LIB_PATH}:${LIB_PATH2} ;;
  esac

  # 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 $(tooldir)/lib, aka /usr/local/TARGET/lib, except for
# sysrooted configurations and when LIBPATH=":".
if [ "x${use_sysroot}" != "xyes" ] ; then
  case :${LIB_PATH}: in
  ::: | *:${tool_lib}:*) ;;
  ::) 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.
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 " $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${EMULATION_NAME}.c.
# Start with an empty file, then the sourced .em script
# can use the "fragment" function to append.
> e${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 2004, 2006, 2007, 2008, 2009 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	# this_emulation \
	34	# optional:
	35	# tool_dir \
	36	# customizer_script
	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	EMULATION_NAME=$2
	93	TOOL_LIB=$3
	94	CUSTOMIZER_SCRIPT=$4
	95
	96	# Can't use ${TOOL_LIB:-$target_alias} here due to an Ultrix shell bug.
	97	if [ "x${TOOL_LIB}" = "x" ] ; then
	98	tool_lib=${exec_prefix}/${target_alias}/lib
	99	else
	100	tool_lib=${exec_prefix}/${TOOL_LIB}/lib
	101	fi
	102
	103	if [ "x${CUSTOMIZER_SCRIPT}" = "x" ] ; then
	104	CUSTOMIZER_SCRIPT=${EMULATION_NAME}
	105	fi
	106	CUSTOMIZER_SCRIPT="${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh"
	107
	108	# Include the emulation-specific parameters:
	109	. ${CUSTOMIZER_SCRIPT}
	110
	111	if test -d ldscripts; then
	112	true
	113	else
	114	mkdir ldscripts
	115	fi
	116
	117	# Set some flags for the emultempl scripts. USE_LIBPATH will
	118	# be set for any libpath-using emulation; NATIVE will be set for a
	119	# libpath-using emulation where ${host} = ${target}. NATIVE
	120	# may already have been set by the emulparams file, but that's OK
	121	# (it'll just get set to "yes" twice).
	122
	123	case " $EMULATION_LIBPATH " in
	124	" ${EMULATION_NAME} ")
	125	if [ "x${host}" = "x${target}" ] ; then
	126	NATIVE=yes
	127	USE_LIBPATH=yes
	128	elif [ "x${use_sysroot}" = "xyes" ] ; then
	129	USE_LIBPATH=yes
	130	fi
	131	;;
	132	esac
	133
	134	# If the emulparams file sets NATIVE, make sure USE_LIBPATH is set also.
	135	if test "x$NATIVE" = "xyes" ; then
	136	USE_LIBPATH=yes
	137	fi
	138
	139	# Set the library search path, for libraries named by -lfoo.
	140	# If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used.
	141	# Otherwise, the default is set here.
	142	#
	143	# The format is the usual list of colon-separated directories.
	144	# To force a logically empty LIB_PATH, do LIBPATH=":".
	145	#
	146	# If we are using a sysroot, prefix library paths with "=" to indicate this.
	147	#
	148	# If the emulparams file set LIBPATH_SUFFIX, prepend an extra copy of
	149	# the library path with the suffix applied.
	150
	151	if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes ] ; then
	152	LIB_PATH2=
	153
	154	libs=${NATIVE_LIB_DIRS}
	155	if [ "x${use_sysroot}" != "xyes" ] ; then
	156	case " ${libs} " in
	157	" ${libdir} ") ;;
	158	*) libs="${libdir} ${libs}" ;;
	159	esac
	160	case " ${libs} " in
	161	" ${tool_lib} ") ;;
	162	*) libs="${tool_lib} ${libs}" ;;
	163	esac
	164	fi
	165
	166	for lib in ${libs}; do
	167	# The "=" is harmless if we aren't using a sysroot, but also needless.
	168	if [ "x${use_sysroot}" = "xyes" ] ; then
	169	lib="=${lib}"
	170	fi
	171	addsuffix=
	172	case "${LIBPATH_SUFFIX}:${lib}" in
	173	:*) ;;
	174	:${LIBPATH_SUFFIX}) ;;
	175	*) addsuffix=yes ;;
	176	esac
	177	if test -n "$addsuffix"; then
	178	case :${LIB_PATH}: in
	179	:${lib}${LIBPATH_SUFFIX}:) ;;
	180	::) LIB_PATH=${lib}${LIBPATH_SUFFIX} ;;
	181	*) LIB_PATH=${LIB_PATH}:${lib}${LIBPATH_SUFFIX} ;;
	182	esac
	183	case :${LIB_PATH}:${LIB_PATH2}: in
	184	:${lib}:) ;;
	185	*::) LIB_PATH2=${lib} ;;
	186	*) LIB_PATH2=${LIB_PATH2}:${lib} ;;
	187	esac
	188	else
	189	case :${LIB_PATH2}: in
	190	:${lib}:) ;;
	191	::) LIB_PATH2=${lib} ;;
	192	*) LIB_PATH2=${LIB_PATH2}:${lib} ;;
	193	esac
	194	fi
	195	done
	196
	197	case :${LIB_PATH}:${LIB_PATH2}: in
	198	:: \| ::) LIB_PATH=${LIB_PATH}${LIB_PATH2} ;;
	199	*) LIB_PATH=${LIB_PATH}:${LIB_PATH2} ;;
	200	esac
	201
	202	# For multilib'ed targets, ensure both ${target_alias}/lib${LIBPATH_SUFFIX}
	203	# and ${TOOL_LIB}/lib${LIBPATH_SUFFIX} are in the default search path, because
	204	# 64bit libraries may be in both places, depending on cross-development
	205	# setup method (e.g.: /usr/s390x-linux/lib64 vs /usr/s390-linux/lib64)
	206	case "${LIBPATH_SUFFIX}:${tool_lib}" in
	207	:*) ;;
	208	:${LIBPATH_SUFFIX}) ;;
	209	*)
	210	paths="${exec_prefix}/${target_alias}/lib${LIBPATH_SUFFIX}"
	211	if [ x"${TOOL_LIB}" != x ]; then
	212	paths="${paths} ${exec_prefix}/${TOOL_LIB}/lib${LIBPATH_SUFFIX}"
	213	fi
	214	for path in $paths; do
	215	case :${LIB_PATH}: in
	216	::: \| :${path}:) ;;
	217	*) LIB_PATH=${path}:${LIB_PATH} ;;
	218	esac
	219	done
	220	;;
	221	esac
	222	fi
	223
	224	# Always search $(tooldir)/lib, aka /usr/local/TARGET/lib, except for
	225	# sysrooted configurations and when LIBPATH=":".
	226	if [ "x${use_sysroot}" != "xyes" ] ; then
	227	case :${LIB_PATH}: in
	228	::: \| :${tool_lib}:) ;;
	229	::) LIB_PATH=${tool_lib} ;;
	230	*) LIB_PATH=${tool_lib}:${LIB_PATH} ;;
	231	esac
	232	# For multilib targets, search both $tool_lib dirs
	233	if [ "x${LIBPATH_SUFFIX}" != "x" ] ; then
	234	case :${LIB_PATH}: in
	235	::: \| :${tool_lib}${LIBPATH_SUFFIX}:) ;;
	236	::) LIB_PATH=${tool_lib}${LIBPATH_SUFFIX} ;;
	237	*) LIB_PATH=${tool_lib}${LIBPATH_SUFFIX}:${LIB_PATH} ;;
	238	esac
	239	fi
	240	fi
	241
	242	LIB_SEARCH_DIRS=`echo ${LIB_PATH} \| sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`
	243
	244	# We need it for testsuite.
	245	set $EMULATION_LIBPATH
	246	if [ "x$1" = "x$EMULATION_NAME" ]; then
	247	test -d tmpdir \|\| mkdir tmpdir
	248	rm -f tmpdir/libpath.exp
	249	echo "set libpath \"${LIB_PATH}\"" \| sed -e 's/:/ /g' > tmpdir/libpath.exp
	250	fi
	251
	252	# Generate 5 or 6 script files from a master script template in
	253	# ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6
	254	# script files is actually used depends on command line options given
	255	# to ld. (SCRIPT_NAME was set in the emulparams_file.)
	256	#
	257	# A .x script file is the default script.
	258	# A .xr script is for linking without relocation (-r flag).
	259	# A .xu script is like .xr, but do create constructors (-Ur flag).
	260	# A .xn script is for linking with -n flag (mix text and data on same page).
	261	# A .xbn script is for linking with -N flag (mix text and data on same page).
	262	# A .xs script is for generating a shared library with the --shared
	263	# flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the
	264	# emulation parameters.
	265	# A .xc script is for linking with -z combreloc; it is only generated if
	266	# $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
	267	# $SCRIPT_NAME is "elf".
	268	# A .xsc script is for linking with --shared -z combreloc; it is generated
	269	# if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
	270	# $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation
	271	# parameters too.
	272
	273	if [ "x$SCRIPT_NAME" = "xelf" ]; then
	274	GENERATE_COMBRELOC_SCRIPT=yes
	275	fi
	276
	277	SEGMENT_SIZE=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}}
	278
	279	# Determine DATA_ALIGNMENT for the 5 variants, using
	280	# values specified in the emulparams/<script_to_run>.sh file or default.
	281
	282	DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}"
	283	DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}"
	284	DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}"
	285	DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}"
	286	DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"
	287
	288	LD_FLAG=r
	289	DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
	290	DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
	291	( echo "/* Script for ld -r: link without relocation */"
	292	. ${CUSTOMIZER_SCRIPT}
	293	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	294	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xr
	295
	296	LD_FLAG=u
	297	DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
	298	CONSTRUCTING=" "
	299	( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
	300	. ${CUSTOMIZER_SCRIPT}
	301	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	302	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xu
	303
	304	LD_FLAG=
	305	DATA_ALIGNMENT=${DATA_ALIGNMENT_}
	306	RELOCATING=" "
	307	( echo "/* Default linker script, for normal executables */"
	308	. ${CUSTOMIZER_SCRIPT}
	309	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	310	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.x
	311
	312	LD_FLAG=n
	313	DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
	314	( echo "/* Script for -n: mix text and data on same page */"
	315	. ${CUSTOMIZER_SCRIPT}
	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}
	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}
	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}
	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}
	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}
	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}
	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}
	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}
	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}
	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}
	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