2 # genscripts.sh - generate the ld-emulation-target specific files
4 # Usage: genscripts_extra.sh \
21 # genscripts_extra.sh \
25 # sparc-sun-sunos4.1.3 \
26 # sparc-sun-sunos4.1.3 \
27 # sparc-sun-sunos4.1.3 \
32 # sparc-sun-sunos4.1.3 \
35 # produces the linker scripts:
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"]
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"]
47 # It also produced the C source file:
51 # which is then compiled into the linker.
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.
74 # Can't use ${TOOL_LIB:-$target_alias} here due to an Ultrix shell bug.
75 if [ "x${TOOL_LIB}" = "x" ] ; then
76 tool_lib=${exec_prefix}/${target_alias}/lib
78 tool_lib=${exec_prefix}/${TOOL_LIB}/lib
81 if [ "x${CUSTOMIZER_SCRIPT}" = "x" ] ; then
82 CUSTOMIZER_SCRIPT=${EMULATION_NAME}
84 CUSTOMIZER_SCRIPT="${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh"
86 # Include the emulation-specific parameters:
87 . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
89 if test -d ldscripts; then
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).
101 case " $EMULATION_LIBPATH " in
102 *" ${EMULATION_NAME} "*)
103 if [ "x${host}" = "x${target}" ] ; then
106 elif [ "x${use_sysroot}" = "xyes" ] ; then
112 # If the emulparams file sets NATIVE, make sure USE_LIBPATH is set also.
113 if test "x$NATIVE" = "xyes" ; then
117 # Set the library search path, for libraries named by -lfoo.
118 # If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used.
119 # Otherwise, the default is set here.
121 # The format is the usual list of colon-separated directories.
122 # To force a logically empty LIB_PATH, do LIBPATH=":".
124 # If we are using a sysroot, prefix library paths with "=" to indicate this.
126 # If the emulparams file set LIBPATH_SUFFIX, prepend an extra copy of
127 # the library path with the suffix applied.
129 if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes ] ; then
132 libs=${NATIVE_LIB_DIRS}
133 if [ "x${use_sysroot}" != "xyes" ] ; then
136 *) libs="${libdir} ${libs}"
139 *" ${tool_lib} "*) ;;
140 *) libs="${tool_lib} ${libs}"
144 for lib in ${libs}; do
145 # The "=" is harmless if we aren't using a sysroot, but also needless.
146 if [ "x${use_sysroot}" = "xyes" ] ; then
150 case "${LIBPATH_SUFFIX}:${lib}" in
152 *:*${LIBPATH_SUFFIX}) ;;
155 if test -n "$addsuffix"; then
156 case :${LIB_PATH}: in
157 *:${lib}${LIBPATH_SUFFIX}:*) ;;
158 ::) LIB_PATH=${lib}${LIBPATH_SUFFIX} ;;
159 *) LIB_PATH=${LIB_PATH}:${lib}${LIBPATH_SUFFIX} ;;
161 case :${LIB_PATH}:${LIB_PATH2}: in
163 *::) LIB_PATH2=${lib} ;;
164 *) LIB_PATH2=${LIB_PATH2}:${lib} ;;
167 case :${LIB_PATH2}: in
169 ::) LIB_PATH2=${lib} ;;
170 *) LIB_PATH2=${LIB_PATH2}:${lib} ;;
175 case :${LIB_PATH}:${LIB_PATH2}: in
176 *:: | ::*) LIB_PATH=${LIB_PATH}${LIB_PATH2} ;;
177 *) LIB_PATH=${LIB_PATH}:${LIB_PATH2} ;;
181 # Always search $(tooldir)/lib, aka /usr/local/TARGET/lib, except for
182 # sysrooted configurations and when LIBPATH=":".
183 if [ "x${use_sysroot}" != "xyes" ] ; then
184 case :${LIB_PATH}: in
185 ::: | *:${tool_lib}:*) ;;
186 ::) LIB_PATH=${tool_lib} ;;
187 *) LIB_PATH=${tool_lib}:${LIB_PATH} ;;
191 LIB_SEARCH_DIRS=`echo ${LIB_PATH} | sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`
193 # We need it for testsuite.
194 case " $EMULATION_LIBPATH " in
195 *" ${EMULATION_NAME} "*)
196 test -d tmpdir || mkdir tmpdir
197 test -f tmpdir/libpath.exp || \
198 echo "set libpath \"${LIB_PATH}\"" | sed -e 's/:/ /g' > tmpdir/libpath.exp
202 # Generate 5 or 6 script files from a master script template in
203 # ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6
204 # script files is actually used depends on command line options given
205 # to ld. (SCRIPT_NAME was set in the emulparams_file.)
207 # A .x script file is the default script.
208 # A .xr script is for linking without relocation (-r flag).
209 # A .xu script is like .xr, but *do* create constructors (-Ur flag).
210 # A .xn script is for linking with -n flag (mix text and data on same page).
211 # A .xbn script is for linking with -N flag (mix text and data on same page).
212 # A .xs script is for generating a shared library with the --shared
213 # flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the
214 # emulation parameters.
215 # A .xc script is for linking with -z combreloc; it is only generated if
216 # $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
217 # $SCRIPT_NAME is "elf".
218 # A .xsc script is for linking with --shared -z combreloc; it is generated
219 # if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
220 # $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation
223 if [ "x$SCRIPT_NAME" = "xelf" ]; then
224 GENERATE_COMBRELOC_SCRIPT=yes
227 SEGMENT_SIZE=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}}
229 # Determine DATA_ALIGNMENT for the 5 variants, using
230 # values specified in the emulparams/<script_to_run>.sh file or default.
232 DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}"
233 DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}"
234 DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}"
235 DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}"
236 DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"
239 DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
240 DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
241 ( echo "/* Script for ld -r: link without relocation */"
242 . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
243 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
244 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xr
247 DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
249 ( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
250 . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
251 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
252 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xu
255 DATA_ALIGNMENT=${DATA_ALIGNMENT_}
257 ( echo "/* Default linker script, for normal executables */"
258 . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
259 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
260 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.x
263 DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
264 TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}}
265 ( echo "/* Script for -n: mix text and data on same page */"
266 . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
267 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
268 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xn
271 DATA_ALIGNMENT=${DATA_ALIGNMENT_N}
272 ( echo "/* Script for -N: mix text and data on same page; don't align data */"
273 . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
274 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
275 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xbn
277 if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
278 DATA_ALIGNMENT=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}}
280 COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
281 ( echo "/* Script for -z combreloc: combine and sort reloc sections */"
282 . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
283 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
284 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xc
289 if test -n "$GENERATE_SHLIB_SCRIPT"; then
291 DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
293 # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR.
295 echo "/* Script for ld --shared: link shared library */"
296 . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
297 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
298 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xs
299 if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
301 DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
302 COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
303 ( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
304 . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
305 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
306 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xsc
313 if test -n "$GENERATE_PIE_SCRIPT"; then
315 DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
317 # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR.
319 echo "/* Script for ld -pie: link position independent executable */"
320 . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
321 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
322 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xd
323 if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
325 DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
326 COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
327 ( echo "/* Script for -pie -z combreloc: position independent executable, combine & sort relocs */"
328 . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME}
329 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
330 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xdc
337 case " $EMULATION_LIBPATH " in
338 *" ${EMULATION_NAME} "*) COMPILE_IN=true;;
341 # Generate e${EMULATION_NAME}.c.
342 . ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em