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

#!/bin/sh
# genscripts.sh - generate the ld-emulation-target specific files
#
# Usage: genscripts_extra.sh \
#          srcdir \
#          libdir \
#          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 \
#    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"]
#
# 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
shift 9
EMULATION_NAME=$1
TOOL_LIB=$2
CUSTOMIZER_SCRIPT=$3

# 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} ${EMULATION_NAME}

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=
  if [ x"$use_sysroot" != xyes ] ; then
    LIB_PATH2=${libdir}
  fi
  for lib in ${NATIVE_LIB_DIRS}; do
    # The "=" is harmless if we aren't using a sysroot, but also needless.
    if [ "x${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
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
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
  *" ${EMULATION_NAME} "*)
    test -d tmpdir || mkdir tmpdir
    test -f tmpdir/libpath.exp || \
    echo "set libpath \"${LIB_PATH}\"" | sed -e 's/:/ /g' > tmpdir/libpath.exp
    ;;
esac

# 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} ${EMULATION_NAME}
  . ${srcdir}/scripttempl/${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} ${EMULATION_NAME}
  . ${srcdir}/scripttempl/${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} ${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 */"
  . ${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 */"
  . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
  . ${srcdir}/scripttempl/${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} ${EMULATION_NAME}
    . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
  ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xc
  rm -f ${COMBRELOC}
  COMBRELOC=
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 */"
    . ${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
    ( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
      . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
      . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
    ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xsc
    rm -f ${COMBRELOC}
    COMBRELOC=
  fi
  unset CREATE_SHLIB
fi

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

case " $EMULATION_LIBPATH " in
    *" ${EMULATION_NAME} "*) COMPILE_IN=true;;
esac

# Generate e${EMULATION_NAME}.c.
. ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em
Commit	Line	Data
252b5132 RH	1	#!/bin/sh
	2	# genscripts.sh - generate the ld-emulation-target specific files
	3	#
8fbdf3ab AM	4	# Usage: genscripts_extra.sh \
	5	# srcdir \
	6	# libdir \
	7	# exec_prefix \
	8	# host \
	9	# target \
	10	# target_alias \
	11	# default_emulation \
	12	# native_lib_dirs \
	13	# use_sysroot \
	14	# this_emulation \
	15	# optional:
	16	# tool_dir \
	17	# customizer_script
252b5132 RH	18	#
252b5132 RH	19	# Sample usage:
8fbdf3ab AM	20	#
	21	# genscripts_extra.sh \
	22	# /sources/ld \
	23	# /usr/local/lib \
	24	# /usr/local \
	25	# sparc-sun-sunos4.1.3 \
	26	# sparc-sun-sunos4.1.3 \
	27	# sparc-sun-sunos4.1.3 \
	28	# sun4 \
	29	# "" \
	30	# no \
	31	# sun3 \
	32	# sparc-sun-sunos4.1.3 \
	33	# sparc.sh
	34	#
	35	# produces the linker scripts:
	36	#
	37	# sun3.x [default linker script]
	38	# sun3.xbn [used when the linker is invoked with "-N"]
	39	# sun3.xn [used when the linker is invoked with "-n"]
	40	# sun3.xr [used when the linker is invoked with "-r"]
	41	# sun3.xu [used when the linker is invoked with "-Ur"]
	42	# and maybe:
	43	# sun3.xc [used when the linker is invoked with "-z combreloc"]
	44	# sun3.xsc [used when the linker is invoked with "--shared"]
	45	# sun3.xdc [used when the linker is invoked with "-pie"]
	46	#
	47	# It also produced the C source file:
	48	#
	49	# em_sun3.c
	50	#
	51	# which is then compiled into the linker.
	52	#
	53	# The linker scripts are created by running the shell script
	54	# /sources/ld/emulparams/sparc.sh to set the value of ${SCRIPT_NAME}
	55	# (and any other variables it wants to). ${SCRIPT_NAME} is then
	56	# invoked with a variable called ${LD_FLAG} to tell it which version
	57	# of the linker script to create.
	58
252b5132 RH	59
	60	srcdir=$1
	61	libdir=$2
d9fc3714 AM	62	exec_prefix=$3
	63	host=$4
	64	target=$5
	65	target_alias=$6
	66	EMULATION_LIBPATH=$7
	67	NATIVE_LIB_DIRS=$8
9c8ebd6a	68	use_sysroot=$9
d9fc3714	69	shift 9
9c8ebd6a	70	EMULATION_NAME=$1
8fbdf3ab AM	71	TOOL_LIB=$2
	72	CUSTOMIZER_SCRIPT=$3
	73
	74	# Can't use ${TOOL_LIB:-$target_alias} here due to an Ultrix shell bug.
	75	if [ "x${TOOL_LIB}" = "x" ] ; then
d9fc3714 AM	76	tool_lib=${exec_prefix}/${target_alias}/lib
d9fc3714 AM	77	else
8fbdf3ab AM	78	tool_lib=${exec_prefix}/${TOOL_LIB}/lib
	79	fi
	80
	81	if [ "x${CUSTOMIZER_SCRIPT}" = "x" ] ; then
	82	CUSTOMIZER_SCRIPT=${EMULATION_NAME}
d9fc3714	83	fi
8fbdf3ab	84	CUSTOMIZER_SCRIPT="${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh"
252b5132 RH	85
252b5132 RH	86	# Include the emulation-specific parameters:
8fbdf3ab	87	. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
252b5132 RH	88
	89	if test -d ldscripts; then
	90	true
	91	else
	92	mkdir ldscripts
	93	fi
	94
9c8ebd6a DJ	95	# Set some flags for the emultempl scripts. USE_LIBPATH will
	96	# be set for any libpath-using emulation; NATIVE will be set for a
	97	# libpath-using emulation where ${host} = ${target}. NATIVE
	98	# may already have been set by the emulparams file, but that's OK
	99	# (it'll just get set to "yes" twice).
	100
	101	case " $EMULATION_LIBPATH " in
	102	" ${EMULATION_NAME} ")
	103	if [ "x${host}" = "x${target}" ] ; then
	104	NATIVE=yes
	105	USE_LIBPATH=yes
	106	elif [ "x${use_sysroot}" = "xyes" ] ; then
	107	USE_LIBPATH=yes
	108	fi
	109	;;
	110	esac
	111
	112	# If the emulparams file sets NATIVE, make sure USE_LIBPATH is set also.
	113	if test "x$NATIVE" = "xyes" ; then
	114	USE_LIBPATH=yes
	115	fi
	116
252b5132 RH	117	# Set the library search path, for libraries named by -lfoo.
	118	# If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used.
	119	# Otherwise, the default is set here.
	120	#
	121	# The format is the usual list of colon-separated directories.
	122	# To force a logically empty LIB_PATH, do LIBPATH=":".
9c8ebd6a DJ	123	#
	124	# If we are using a sysroot, prefix library paths with "=" to indicate this.
	125	#
	126	# If the emulparams file set LIBPATH_SUFFIX, prepend an extra copy of
	127	# the library path with the suffix applied.
252b5132	128
9c8ebd6a	129	if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes ] ; then
f22f5fcd	130	LIB_PATH2=
9c8ebd6a	131	if [ x"$use_sysroot" != xyes ] ; then
f22f5fcd	132	LIB_PATH2=${libdir}
9c8ebd6a DJ	133	fi
	134	for lib in ${NATIVE_LIB_DIRS}; do
	135	# The "=" is harmless if we aren't using a sysroot, but also needless.
	136	if [ "x${use_sysroot}" = "xyes" ] ; then
	137	lib="=${lib}"
	138	fi
d460ab58 JJ	139	addsuffix=
	140	case "${LIBPATH_SUFFIX}:${lib}" in
	141	:*) ;;
	142	:${LIBPATH_SUFFIX}) ;;
	143	*) addsuffix=yes ;;
3336653a	144	esac
d460ab58 JJ	145	if test -n "$addsuffix"; then
	146	case :${LIB_PATH}: in
	147	:${lib}${LIBPATH_SUFFIX}:) ;;
	148	::) LIB_PATH=${lib}${LIBPATH_SUFFIX} ;;
	149	*) LIB_PATH=${LIB_PATH}:${lib}${LIBPATH_SUFFIX} ;;
	150	esac
f22f5fcd	151	case :${LIB_PATH}:${LIB_PATH2}: in
d460ab58	152	:${lib}:) ;;
f22f5fcd AM	153	*::) LIB_PATH2=${lib} ;;
f22f5fcd AM	154	*) LIB_PATH2=${LIB_PATH2}:${lib} ;;
d460ab58 JJ	155	esac
d460ab58 JJ	156	else
f22f5fcd AM	157	case :${LIB_PATH2}: in
	158	:${lib}:) ;;
	159	::) LIB_PATH2=${lib} ;;
	160	*) LIB_PATH2=${LIB_PATH2}:${lib} ;;
d460ab58 JJ	161	esac
d460ab58 JJ	162	fi
9c8ebd6a	163	done
f22f5fcd AM	164	case :${LIB_PATH}:${LIB_PATH2}: in
	165	:: \| ::) LIB_PATH=${LIB_PATH}${LIB_PATH2} ;;
	166	*) LIB_PATH=${LIB_PATH}:${LIB_PATH2} ;;
	167	esac
252b5132 RH	168	fi
252b5132 RH	169
9c8ebd6a DJ	170
9c8ebd6a DJ	171	# Always search $(tooldir)/lib, aka /usr/local/TARGET/lib, except for
f22f5fcd	172	# sysrooted configurations and when LIBPATH=":".
9c8ebd6a	173	if [ "x${use_sysroot}" != "xyes" ] ; then
f22f5fcd AM	174	case :${LIB_PATH}: in
	175	::: \| :${tool_lib}:) ;;
	176	::) LIB_PATH=${tool_lib} ;;
	177	*) LIB_PATH=${tool_lib}:${LIB_PATH} ;;
	178	esac
9c8ebd6a	179	fi
252b5132	180
eb3d6bb8	181	LIB_SEARCH_DIRS=`echo ${LIB_PATH} \| sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`
252b5132	182
cdaeef2e L	183	# We need it for testsuite.
	184	case " $EMULATION_LIBPATH " in
	185	" ${EMULATION_NAME} ")
	186	test -d tmpdir \|\| mkdir tmpdir
f22f5fcd	187	test -f tmpdir/libpath.exp \|\| \
cdaeef2e L	188	echo "set libpath \"${LIB_PATH}\"" \| sed -e 's/:/ /g' > tmpdir/libpath.exp
	189	;;
	190	esac
	191
252b5132 RH	192	# Generate 5 or 6 script files from a master script template in
	193	# ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6
	194	# script files is actually used depends on command line options given
	195	# to ld. (SCRIPT_NAME was set in the emulparams_file.)
	196	#
	197	# A .x script file is the default script.
	198	# A .xr script is for linking without relocation (-r flag).
	199	# A .xu script is like .xr, but do create constructors (-Ur flag).
	200	# A .xn script is for linking with -n flag (mix text and data on same page).
	201	# A .xbn script is for linking with -N flag (mix text and data on same page).
	202	# A .xs script is for generating a shared library with the --shared
	203	# flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the
	204	# emulation parameters.
db6751f2 JJ	205	# A .xc script is for linking with -z combreloc; it is only generated if
	206	# $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
	207	# $SCRIPT_NAME is "elf".
	208	# A .xsc script is for linking with --shared -z combreloc; it is generated
	209	# if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
	210	# $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation
	211	# parameters too.
	212
	213	if [ "x$SCRIPT_NAME" = "xelf" ]; then
	214	GENERATE_COMBRELOC_SCRIPT=yes
	215	fi
252b5132	216
1ddd7b13	217	SEGMENT_SIZE=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}}
252b5132 RH	218
252b5132 RH	219	# Determine DATA_ALIGNMENT for the 5 variants, using
8fbdf3ab	220	# values specified in the emulparams/<script_to_run>.sh file or default.
252b5132 RH	221
	222	DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}"
	223	DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}"
	224	DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}"
	225	DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}"
	226	DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"
	227
	228	LD_FLAG=r
	229	DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
	230	DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
cedd6b0d	231	( echo "/* Script for ld -r: link without relocation */"
8fbdf3ab	232	. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
179c732c	233	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
db6751f2	234	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xr
252b5132 RH	235
	236	LD_FLAG=u
	237	DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
	238	CONSTRUCTING=" "
cedd6b0d	239	( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
8fbdf3ab	240	. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
179c732c	241	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
db6751f2	242	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xu
252b5132 RH	243
	244	LD_FLAG=
	245	DATA_ALIGNMENT=${DATA_ALIGNMENT_}
	246	RELOCATING=" "
cedd6b0d	247	( echo "/* Default linker script, for normal executables */"
8fbdf3ab	248	. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
179c732c	249	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
db6751f2	250	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.x
252b5132 RH	251
	252	LD_FLAG=n
	253	DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
	254	TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}}
cedd6b0d	255	( echo "/* Script for -n: mix text and data on same page */"
8fbdf3ab	256	. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
179c732c	257	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
db6751f2	258	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xn
252b5132 RH	259
	260	LD_FLAG=N
	261	DATA_ALIGNMENT=${DATA_ALIGNMENT_N}
cedd6b0d	262	( echo "/* Script for -N: mix text and data on same page; don't align data */"
8fbdf3ab	263	. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
179c732c	264	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
db6751f2 JJ	265	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xbn
	266
	267	if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
	268	DATA_ALIGNMENT=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}}
	269	LD_FLAG=c
	270	COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
e24d7c12	271	( echo "/* Script for -z combreloc: combine and sort reloc sections */"
8fbdf3ab	272	. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
db6751f2 JJ	273	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	274	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xc
	275	rm -f ${COMBRELOC}
	276	COMBRELOC=
	277	fi
252b5132 RH	278
	279	if test -n "$GENERATE_SHLIB_SCRIPT"; then
	280	LD_FLAG=shared
	281	DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
	282	CREATE_SHLIB=" "
	283	# Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR.
cedd6b0d JB	284	(
cedd6b0d JB	285	echo "/* Script for ld --shared: link shared library */"
8fbdf3ab	286	. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
179c732c	287	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
db6751f2 JJ	288	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xs
	289	if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
	290	LD_FLAG=cshared
	291	DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
	292	COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
cedd6b0d	293	( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
8fbdf3ab	294	. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
db6751f2 JJ	295	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	296	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xsc
	297	rm -f ${COMBRELOC}
	298	COMBRELOC=
	299	fi
36af4a4e JJ	300	unset CREATE_SHLIB
	301	fi
	302
	303	if test -n "$GENERATE_PIE_SCRIPT"; then
	304	LD_FLAG=pie
	305	DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
	306	CREATE_PIE=" "
	307	# Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR.
	308	(
	309	echo "/* Script for ld -pie: link position independent executable */"
8fbdf3ab	310	. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
36af4a4e JJ	311	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	312	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xd
	313	if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
	314	LD_FLAG=cpie
	315	DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
	316	COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
	317	( echo "/* Script for -pie -z combreloc: position independent executable, combine & sort relocs */"
8fbdf3ab	318	. ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
36af4a4e JJ	319	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	320	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xdc
	321	rm -f ${COMBRELOC}
	322	COMBRELOC=
	323	fi
	324	unset CREATE_PIE
252b5132 RH	325	fi
252b5132 RH	326
eb3d6bb8 AM	327	case " $EMULATION_LIBPATH " in
	328	" ${EMULATION_NAME} ") COMPILE_IN=true;;
	329	esac
252b5132 RH	330
	331	# Generate e${EMULATION_NAME}.c.
	332	. ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em