2 # genscripts.sh - generate the ld-emulation-target specific files
3 # Copyright 2007 Free Software Foundation, Inc.
5 # This file is part of the Gnu Linker.
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)
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.
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
22 # Usage: genscripts_extra.sh \
40 # genscripts_extra.sh \
45 # sparc-sun-sunos4.1.3 \
46 # sparc-sun-sunos4.1.3 \
47 # sparc-sun-sunos4.1.3 \
52 # sparc-sun-sunos4.1.3 \
55 # produces the linker scripts:
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"]
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"]
68 # It also produced the C source file:
72 # which is then compiled into the linker.
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.
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}/${target_alias}/lib
100 tool_lib
=${exec_prefix}/${TOOL_LIB}/lib
103 if [ "x${CUSTOMIZER_SCRIPT}" = "x" ] ; then
104 CUSTOMIZER_SCRIPT
=${EMULATION_NAME}
106 CUSTOMIZER_SCRIPT
="${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh"
108 # Include the emulation-specific parameters:
109 .
${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
111 if test -d ldscripts
; then
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).
123 case " $EMULATION_LIBPATH " in
124 *" ${EMULATION_NAME} "*)
125 if [ "x${host}" = "x${target}" ] ; then
128 elif [ "x${use_sysroot}" = "xyes" ] ; then
134 # If the emulparams file sets NATIVE, make sure USE_LIBPATH is set also.
135 if test "x$NATIVE" = "xyes" ; then
139 # Set the library search path, for libraries named by -lfoo.
140 # If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used.
141 # Otherwise, the default is set here.
143 # The format is the usual list of colon-separated directories.
144 # To force a logically empty LIB_PATH, do LIBPATH=":".
146 # If we are using a sysroot, prefix library paths with "=" to indicate this.
148 # If the emulparams file set LIBPATH_SUFFIX, prepend an extra copy of
149 # the library path with the suffix applied.
151 if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes
] ; then
154 libs
=${NATIVE_LIB_DIRS}
155 if [ "x${use_sysroot}" != "xyes" ] ; then
158 *) libs
="${libdir} ${libs}" ;;
161 *" ${tool_lib} "*) ;;
162 *) libs
="${tool_lib} ${libs}" ;;
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
172 case "${LIBPATH_SUFFIX}:${lib}" in
174 *:*${LIBPATH_SUFFIX}) ;;
177 if test -n "$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} ;;
183 case :${LIB_PATH}:${LIB_PATH2}: in
185 *::) LIB_PATH2
=${lib} ;;
186 *) LIB_PATH2
=${LIB_PATH2}:${lib} ;;
189 case :${LIB_PATH2}: in
191 ::) LIB_PATH2
=${lib} ;;
192 *) LIB_PATH2
=${LIB_PATH2}:${lib} ;;
197 case :${LIB_PATH}:${LIB_PATH2}: in
198 *:: |
::*) LIB_PATH
=${LIB_PATH}${LIB_PATH2} ;;
199 *) LIB_PATH
=${LIB_PATH}:${LIB_PATH2} ;;
203 # Always search $(tooldir)/lib, aka /usr/local/TARGET/lib, except for
204 # sysrooted configurations and when LIBPATH=":".
205 if [ "x${use_sysroot}" != "xyes" ] ; then
206 case :${LIB_PATH}: in
207 ::: |
*:${tool_lib}:*) ;;
208 ::) LIB_PATH
=${tool_lib} ;;
209 *) LIB_PATH
=${tool_lib}:${LIB_PATH} ;;
211 # For multilib targets, search both $tool_lib dirs
212 if [ "x${LIBPATH_SUFFIX}" != "x" ] ; then
213 case :${LIB_PATH}: in
214 ::: |
*:${tool_lib}${LIBPATH_SUFFIX}:*) ;;
215 ::) LIB_PATH
=${tool_lib}${LIBPATH_SUFFIX} ;;
216 *) LIB_PATH
=${tool_lib}${LIBPATH_SUFFIX}:${LIB_PATH} ;;
221 LIB_SEARCH_DIRS
=`echo ${LIB_PATH} | sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`
223 # We need it for testsuite.
224 set $EMULATION_LIBPATH
225 if [ "x$1" = "x$EMULATION_NAME" ]; then
226 test -d tmpdir || mkdir tmpdir
227 rm -f tmpdir
/libpath.exp
228 echo "set libpath \"${LIB_PATH}\"" |
sed -e 's/:/ /g' > tmpdir
/libpath.exp
231 # Generate 5 or 6 script files from a master script template in
232 # ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6
233 # script files is actually used depends on command line options given
234 # to ld. (SCRIPT_NAME was set in the emulparams_file.)
236 # A .x script file is the default script.
237 # A .xr script is for linking without relocation (-r flag).
238 # A .xu script is like .xr, but *do* create constructors (-Ur flag).
239 # A .xn script is for linking with -n flag (mix text and data on same page).
240 # A .xbn script is for linking with -N flag (mix text and data on same page).
241 # A .xs script is for generating a shared library with the --shared
242 # flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the
243 # emulation parameters.
244 # A .xc script is for linking with -z combreloc; it is only generated if
245 # $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
246 # $SCRIPT_NAME is "elf".
247 # A .xsc script is for linking with --shared -z combreloc; it is generated
248 # if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
249 # $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation
252 if [ "x$SCRIPT_NAME" = "xelf" ]; then
253 GENERATE_COMBRELOC_SCRIPT
=yes
256 SEGMENT_SIZE
=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}}
258 # Determine DATA_ALIGNMENT for the 5 variants, using
259 # values specified in the emulparams/<script_to_run>.sh file or default.
261 DATA_ALIGNMENT_
="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}"
262 DATA_ALIGNMENT_n
="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}"
263 DATA_ALIGNMENT_N
="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}"
264 DATA_ALIGNMENT_r
="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}"
265 DATA_ALIGNMENT_u
="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"
268 DATA_ALIGNMENT
=${DATA_ALIGNMENT_r}
269 DEFAULT_DATA_ALIGNMENT
="ALIGN(${SEGMENT_SIZE})"
270 ( echo "/* Script for ld -r: link without relocation */"
271 .
${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
272 .
${srcdir}/scripttempl
/${SCRIPT_NAME}.sc
273 ) |
sed -e '/^ *$/d;s/[ ]*$//' > ldscripts
/${EMULATION_NAME}.xr
276 DATA_ALIGNMENT
=${DATA_ALIGNMENT_u}
278 ( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
279 .
${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
280 .
${srcdir}/scripttempl
/${SCRIPT_NAME}.sc
281 ) |
sed -e '/^ *$/d;s/[ ]*$//' > ldscripts
/${EMULATION_NAME}.xu
284 DATA_ALIGNMENT
=${DATA_ALIGNMENT_}
286 ( echo "/* Default linker script, for normal executables */"
287 .
${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
288 .
${srcdir}/scripttempl
/${SCRIPT_NAME}.sc
289 ) |
sed -e '/^ *$/d;s/[ ]*$//' > ldscripts
/${EMULATION_NAME}.x
292 DATA_ALIGNMENT
=${DATA_ALIGNMENT_n}
293 ( echo "/* Script for -n: mix text and data on same page */"
294 .
${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
295 .
${srcdir}/scripttempl
/${SCRIPT_NAME}.sc
296 ) |
sed -e '/^ *$/d;s/[ ]*$//' > ldscripts
/${EMULATION_NAME}.xn
299 DATA_ALIGNMENT
=${DATA_ALIGNMENT_N}
300 ( echo "/* Script for -N: mix text and data on same page; don't align data */"
301 .
${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
302 .
${srcdir}/scripttempl
/${SCRIPT_NAME}.sc
303 ) |
sed -e '/^ *$/d;s/[ ]*$//' > ldscripts
/${EMULATION_NAME}.xbn
305 if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
306 DATA_ALIGNMENT
=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}}
308 COMBRELOC
=ldscripts
/${EMULATION_NAME}.xc.tmp
309 ( echo "/* Script for -z combreloc: combine and sort reloc sections */"
310 .
${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
311 .
${srcdir}/scripttempl
/${SCRIPT_NAME}.sc
312 ) |
sed -e '/^ *$/d;s/[ ]*$//' > ldscripts
/${EMULATION_NAME}.xc
316 COMBRELOC
=ldscripts
/${EMULATION_NAME}.xw.tmp
317 ( echo "/* Script for -z combreloc -z now -z relro: combine and sort reloc sections */"
318 .
${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
319 .
${srcdir}/scripttempl
/${SCRIPT_NAME}.sc
320 ) |
sed -e '/^ *$/d;s/[ ]*$//' > ldscripts
/${EMULATION_NAME}.xw
326 if test -n "$GENERATE_SHLIB_SCRIPT"; then
328 DATA_ALIGNMENT
=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
331 echo "/* Script for ld --shared: link shared library */"
332 .
${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
333 .
${srcdir}/scripttempl
/${SCRIPT_NAME}.sc
334 ) |
sed -e '/^ *$/d;s/[ ]*$//' > ldscripts
/${EMULATION_NAME}.xs
335 if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
337 DATA_ALIGNMENT
=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
338 COMBRELOC
=ldscripts
/${EMULATION_NAME}.xsc.tmp
339 ( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
340 .
${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
341 .
${srcdir}/scripttempl
/${SCRIPT_NAME}.sc
342 ) |
sed -e '/^ *$/d;s/[ ]*$//' > ldscripts
/${EMULATION_NAME}.xsc
346 COMBRELOC
=ldscripts
/${EMULATION_NAME}.xsw.tmp
347 ( echo "/* Script for --shared -z combreloc -z now -z relro: shared library, combine & sort relocs */"
348 .
${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
349 .
${srcdir}/scripttempl
/${SCRIPT_NAME}.sc
350 ) |
sed -e '/^ *$/d;s/[ ]*$//' > ldscripts
/${EMULATION_NAME}.xsw
358 if test -n "$GENERATE_PIE_SCRIPT"; then
360 DATA_ALIGNMENT
=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
363 echo "/* Script for ld -pie: link position independent executable */"
364 .
${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
365 .
${srcdir}/scripttempl
/${SCRIPT_NAME}.sc
366 ) |
sed -e '/^ *$/d;s/[ ]*$//' > ldscripts
/${EMULATION_NAME}.xd
367 if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
369 DATA_ALIGNMENT
=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
370 COMBRELOC
=ldscripts
/${EMULATION_NAME}.xdc.tmp
371 ( echo "/* Script for -pie -z combreloc: position independent executable, combine & sort relocs */"
372 .
${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
373 .
${srcdir}/scripttempl
/${SCRIPT_NAME}.sc
374 ) |
sed -e '/^ *$/d;s/[ ]*$//' > ldscripts
/${EMULATION_NAME}.xdc
378 COMBRELOC
=ldscripts
/${EMULATION_NAME}.xdw.tmp
379 ( echo "/* Script for -pie -z combreloc -z now -z relro: position independent executable, combine & sort relocs */"
380 .
${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
381 .
${srcdir}/scripttempl
/${SCRIPT_NAME}.sc
382 ) |
sed -e '/^ *$/d;s/[ ]*$//' > ldscripts
/${EMULATION_NAME}.xdw
390 if test -n "$GENERATE_AUTO_IMPORT_SCRIPT"; then
392 DATA_ALIGNMENT
=${DATA_ALIGNMENT_}
394 echo "/* Script for ld --enable-auto-import: Like the default script except read only data is placed into .data */"
395 .
${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
396 .
${srcdir}/scripttempl
/${SCRIPT_NAME}.sc
397 ) |
sed -e '/^ *$/d;s/[ ]*$//' > ldscripts
/${EMULATION_NAME}.xa
400 case " $EMULATION_LIBPATH " in
401 *" ${EMULATION_NAME} "*) COMPILE_IN
=true
;;
404 if test -n "${BASH+set}"; then
407 local current_script
="$em_script"
410 em_script
=$current_script
414 local lineno
=$
[${BASH_LINENO[0]} + 1]
415 echo >> e
${EMULATION_NAME}.c
"#line $lineno \"$em_script\""
416 cat >> e
${EMULATION_NAME}.c
425 cat >> e
${EMULATION_NAME}.c
429 # Generate e${EMULATION_NAME}.c.
430 # Start with an empty file, then the sourced .em script
431 # can use the "fragment" function to append.
432 > e
${EMULATION_NAME}.c
433 source_em
${srcdir}/emultempl
/${TEMPLATE_NAME-generic}.em