[thirdparty/binutils-gdb.git] / ld / genscripts_extra.sh

#!/bin/sh
# genscripts_extra.sh - A copy of genscripts.sh with the ability to accept
#  a second optional parameter - the name of the script to run in order to
#  customise the linker scripts generated for a particular emulation.
#  This allows targets with large numbers of similar emulations to only
#  have one script to customise them all.
#
# 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
shift
# Can't use ${1:-$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
  
# Include the emulation-specific parameters:
. ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${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 */"
  . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${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 */"
  . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${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 */"
  . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${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 */"
  . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${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 */"
  . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${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 */"
    . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${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 */"
    . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${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 */"
      . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${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 */"
    . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${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 */"
      . ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${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
aafdb207 NC	1	#!/bin/sh
	2	# genscripts_extra.sh - A copy of genscripts.sh with the ability to accept
	3	# a second optional parameter - the name of the script to run in order to
	4	# customise the linker scripts generated for a particular emulation.
	5	# This allows targets with large numbers of similar emulations to only
	6	# have one script to customise them all.
	7	#
	8	# Usage: genscripts_extra.sh \
	9	# srcdir \
	10	# libdir \
	11	# exec_prefix \
	12	# host \
	13	# target \
	14	# target_alias \
	15	# default_emulation \
	16	# native_lib_dirs \
	17	# use_sysroot \
	18	# this_emulation
	19	# optional:
	20	# tool_dir
	21	# customizer_script
	22	#
	23	# Sample usage:
	24	#
	25	# genscripts_extra.sh \
	26	# /sources/ld \
	27	# /usr/local/lib \
	28	# /usr/local \
	29	# sparc-sun-sunos4.1.3 \
	30	# sparc-sun-sunos4.1.3 \
	31	# sparc-sun-sunos4.1.3 \
	32	# sun4 \
	33	# "" \
	34	# no \
	35	# sun3 \
	36	# sparc-sun-sunos4.1.3
	37	# sparc.sh
	38	#
	39	# produces the linker scripts:
	40	#
	41	# sun3.x [default linker script]
	42	# sun3.xbn [used when the linker is invoked with "-N"]
	43	# sun3.xn [used when the linker is invoked with "-n"]
	44	# sun3.xr [used when the linker is invoked with "-r"]
	45	# sun3.xu [used when the linker is invoked with "-Ur"]
	46	# and maybe:
	47	# sun3.xc [used when the linker is invoked with "-z combreloc"]
	48	# sun3.xsc [used when the linker is invoked with "--shared"]
	49	# sun3.xdc [used when the linker is invoked with "-pie"]
	50	#
	51	# It also produced the C source file:
	52	#
	53	# em_sun3.c
	54	#
	55	# which is then compiled into the linker.
	56	#
	57	# The linker scripts are created by running the shell script
	58	# /sources/ld/emulparams/sparc.sh to set the value of ${SCRIPT_NAME}
	59	# (and any other variables it wants to). ${SCRIPT_NAME} is then
	60	# invoked with a variable called ${LD_FLAG} to tell it which version
	61	# of the linker script to create.
	62
	63
	64	srcdir=$1
65	libdir=$2
66	exec_prefix=$3
67	host=$4
68	target=$5
69	target_alias=$6
70	EMULATION_LIBPATH=$7
71	NATIVE_LIB_DIRS=$8
72	use_sysroot=$9
73	shift 9
74	EMULATION_NAME=$1
75	TOOL_LIB=$2
76	CUSTOMIZER_SCRIPT=$3
77	shift
78	# Can't use ${1:-$target_alias} here due to an Ultrix shell bug.
79	if [ "x$TOOL_LIB" = "x" ] ; then
80	tool_lib=${exec_prefix}/${target_alias}/lib
81	else
82	tool_lib=${exec_prefix}/$TOOL_LIB/lib
83	fi
84
85	if [ "x${CUSTOMIZER_SCRIPT}" = "x" ] ; then
86	CUSTOMIZER_SCRIPT=${EMULATION_NAME}
87	fi
88
89	# Include the emulation-specific parameters:
90	. ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME}
91
92	if test -d ldscripts; then
93	true
94	else
95	mkdir ldscripts
96	fi
97
98	# Set some flags for the emultempl scripts. USE_LIBPATH will
99	# be set for any libpath-using emulation; NATIVE will be set for a
100	# libpath-using emulation where ${host} = ${target}. NATIVE
101	# may already have been set by the emulparams file, but that's OK
102	# (it'll just get set to "yes" twice).
103
104	case " $EMULATION_LIBPATH " in
105	" ${EMULATION_NAME} ")
106	if [ "x${host}" = "x${target}" ] ; then
107	NATIVE=yes
108	USE_LIBPATH=yes
109	elif [ "x${use_sysroot}" = "xyes" ] ; then
110	USE_LIBPATH=yes
111	fi
112	;;
113	esac
114
115	# If the emulparams file sets NATIVE, make sure USE_LIBPATH is set also.
116	if test "x$NATIVE" = "xyes" ; then
117	USE_LIBPATH=yes
118	fi
119
120	# Set the library search path, for libraries named by -lfoo.
121	# If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used.
122	# Otherwise, the default is set here.
123	#
124	# The format is the usual list of colon-separated directories.
125	# To force a logically empty LIB_PATH, do LIBPATH=":".
126	#
127	# If we are using a sysroot, prefix library paths with "=" to indicate this.
128	#
129	# If the emulparams file set LIBPATH_SUFFIX, prepend an extra copy of
130	# the library path with the suffix applied.
131
132	if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes ] ; then
133	LIB_PATH2=
134	if [ x"$use_sysroot" != xyes ] ; then
135	LIB_PATH2=${libdir}
136	fi
137	for lib in ${NATIVE_LIB_DIRS}; do
138	# The "=" is harmless if we aren't using a sysroot, but also needless.
139	if [ "x${use_sysroot}" = "xyes" ] ; then
140	lib="=${lib}"
141	fi
142	addsuffix=
143	case "${LIBPATH_SUFFIX}:${lib}" in
144	:*) ;;
145	:${LIBPATH_SUFFIX}) ;;
146	*) addsuffix=yes ;;
147	esac
148	if test -n "$addsuffix"; then
149	case :${LIB_PATH}: in
150	:${lib}${LIBPATH_SUFFIX}:) ;;
151	::) LIB_PATH=${lib}${LIBPATH_SUFFIX} ;;
152	*) LIB_PATH=${LIB_PATH}:${lib}${LIBPATH_SUFFIX} ;;
153	esac
154	case :${LIB_PATH}:${LIB_PATH2}: in
155	:${lib}:) ;;
156	*::) LIB_PATH2=${lib} ;;
157	*) LIB_PATH2=${LIB_PATH2}:${lib} ;;
158	esac
159	else
160	case :${LIB_PATH2}: in
161	:${lib}:) ;;
162	::) LIB_PATH2=${lib} ;;
163	*) LIB_PATH2=${LIB_PATH2}:${lib} ;;
164	esac
165	fi
166	done
167	case :${LIB_PATH}:${LIB_PATH2}: in
168	:: \| ::) LIB_PATH=${LIB_PATH}${LIB_PATH2} ;;
169	*) LIB_PATH=${LIB_PATH}:${LIB_PATH2} ;;
170	esac
171	fi
172
173
174	# Always search $(tooldir)/lib, aka /usr/local/TARGET/lib, except for
175	# sysrooted configurations and when LIBPATH=":".
176	if [ "x${use_sysroot}" != "xyes" ] ; then
177	case :${LIB_PATH}: in
178	::: \| :${tool_lib}:) ;;
179	::) LIB_PATH=${tool_lib} ;;
180	*) LIB_PATH=${tool_lib}:${LIB_PATH} ;;
181	esac
182	fi
183
184	LIB_SEARCH_DIRS=`echo ${LIB_PATH} \| sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`
185
186	# We need it for testsuite.
187	case " $EMULATION_LIBPATH " in
188	" ${EMULATION_NAME} ")
189	test -d tmpdir \|\| mkdir tmpdir
190	test -f tmpdir/libpath.exp \|\| \
191	echo "set libpath \"${LIB_PATH}\"" \| sed -e 's/:/ /g' > tmpdir/libpath.exp
192	;;
193	esac
194
195	# Generate 5 or 6 script files from a master script template in
196	# ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6
197	# script files is actually used depends on command line options given
198	# to ld. (SCRIPT_NAME was set in the emulparams_file.)
199	#
200	# A .x script file is the default script.
201	# A .xr script is for linking without relocation (-r flag).
202	# A .xu script is like .xr, but do create constructors (-Ur flag).
203	# A .xn script is for linking with -n flag (mix text and data on same page).
204	# A .xbn script is for linking with -N flag (mix text and data on same page).
205	# A .xs script is for generating a shared library with the --shared
206	# flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the
207	# emulation parameters.
208	# A .xc script is for linking with -z combreloc; it is only generated if
209	# $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
210	# $SCRIPT_NAME is "elf".
211	# A .xsc script is for linking with --shared -z combreloc; it is generated
212	# if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
213	# $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation
214	# parameters too.
215
216	if [ "x$SCRIPT_NAME" = "xelf" ]; then
217	GENERATE_COMBRELOC_SCRIPT=yes
218	fi
219
220	SEGMENT_SIZE=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}}
221
222	# Determine DATA_ALIGNMENT for the 5 variants, using
223	# values specified in the emulparams/<script_to_run>.sh file or default.
224
225	DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}"
226	DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}"
227	DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}"
228	DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}"
229	DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"
230
231	LD_FLAG=r
232	DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
233	DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
234	( echo "/* Script for ld -r: link without relocation */"
235	. ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME}
236	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
237	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xr
238
239	LD_FLAG=u
240	DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
241	CONSTRUCTING=" "
242	( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
243	. ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME}
244	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
245	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xu
246
247	LD_FLAG=
248	DATA_ALIGNMENT=${DATA_ALIGNMENT_}
249	RELOCATING=" "
250	( echo "/* Default linker script, for normal executables */"
251	. ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME}
252	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
253	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.x
254
255	LD_FLAG=n
256	DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
257	TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}}
258	( echo "/* Script for -n: mix text and data on same page */"
259	. ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME}
260	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
261	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xn
262
263	LD_FLAG=N
264	DATA_ALIGNMENT=${DATA_ALIGNMENT_N}
265	( echo "/* Script for -N: mix text and data on same page; don't align data */"
266	. ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME}
267	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
268	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xbn
269
270	if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
271	DATA_ALIGNMENT=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}}
272	LD_FLAG=c
273	COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
274	( echo "/* Script for -z combreloc: combine and sort reloc sections */"
275	. ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME}
276	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
277	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xc
278	rm -f ${COMBRELOC}
279	COMBRELOC=
280	fi
281
282	if test -n "$GENERATE_SHLIB_SCRIPT"; then
283	LD_FLAG=shared
284	DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
285	CREATE_SHLIB=" "
286	# Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR.
287	(
288	echo "/* Script for ld --shared: link shared library */"
289	. ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME}
290	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
291	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xs
292	if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
293	LD_FLAG=cshared
294	DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
295	COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
296	( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
297	. ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME}
298	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
299	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xsc
300	rm -f ${COMBRELOC}
301	COMBRELOC=
302	fi
303	unset CREATE_SHLIB
304	fi
305
306	if test -n "$GENERATE_PIE_SCRIPT"; then
307	LD_FLAG=pie
308	DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
309	CREATE_PIE=" "
310	# Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR.
311	(
312	echo "/* Script for ld -pie: link position independent executable */"
313	. ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME}
314	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
315	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xd
316	if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
317	LD_FLAG=cpie
318	DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
319	COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
320	( echo "/* Script for -pie -z combreloc: position independent executable, combine & sort relocs */"
321	. ${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh ${EMULATION_NAME}
322	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
323	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xdc
324	rm -f ${COMBRELOC}
325	COMBRELOC=
326	fi
327	unset CREATE_PIE
328	fi
329
330	case " $EMULATION_LIBPATH " in
331	" ${EMULATION_NAME} ") COMPILE_IN=true;;
332	esac
333
334	# Generate e${EMULATION_NAME}.c.
335	. ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em