2 # genscripts.sh - generate the ld-emulation-target specific files
4 # Usage: genscripts.sh srcdir libdir exec_prefix \
5 # host target target_alias default_emulation \
6 # native_lib_dirs use_sysroot this_emulation tool_dir
9 # genscripts.sh /djm/ld-devo/devo/ld /usr/local/lib /usr/local \
10 # sparc-sun-sunos4.1.3 sparc-sun-sunos4.1.3 sparc-sun-sunos4.1.3 sun4 \
11 # "" no sun3 sparc-sun-sunos4.1.3
12 # produces sun3.x sun3.xbn sun3.xn sun3.xr sun3.xu em_sun3.c
26 # Can't use ${1:-$target_alias} here due to an Ultrix shell bug.
27 if [ "x$1" = "x" ] ; then
28 tool_lib=${exec_prefix}/${target_alias}/lib
30 tool_lib=${exec_prefix}/$1/lib
33 # Include the emulation-specific parameters:
34 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
36 if test -d ldscripts; then
42 # Set some flags for the emultempl scripts. USE_LIBPATH will
43 # be set for any libpath-using emulation; NATIVE will be set for a
44 # libpath-using emulation where ${host} = ${target}. NATIVE
45 # may already have been set by the emulparams file, but that's OK
46 # (it'll just get set to "yes" twice).
48 case " $EMULATION_LIBPATH " in
49 *" ${EMULATION_NAME} "*)
50 if [ "x${host}" = "x${target}" ] ; then
53 elif [ "x${use_sysroot}" = "xyes" ] ; then
59 # If the emulparams file sets NATIVE, make sure USE_LIBPATH is set also.
60 if test "x$NATIVE" = "xyes" ; then
64 # Set the library search path, for libraries named by -lfoo.
65 # If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used.
66 # Otherwise, the default is set here.
68 # The format is the usual list of colon-separated directories.
69 # To force a logically empty LIB_PATH, do LIBPATH=":".
71 # If we are using a sysroot, prefix library paths with "=" to indicate this.
73 # If the emulparams file set LIBPATH_SUFFIX, prepend an extra copy of
74 # the library path with the suffix applied.
76 if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes ] ; then
77 if [ x"$use_sysroot" != xyes ] ; then
81 for lib in ${NATIVE_LIB_DIRS}; do
82 # The "=" is harmless if we aren't using a sysroot, but also needless.
83 if [ "x${use_sysroot}" = "xyes" ] ; then
87 case "${LIBPATH_SUFFIX}:${lib}" in
89 *:*${LIBPATH_SUFFIX}) ;;
92 if test -n "$addsuffix"; then
94 *:${lib}${LIBPATH_SUFFIX}:*) ;;
95 ::) LIB_PATH=${lib}${LIBPATH_SUFFIX} ;;
96 *) LIB_PATH=${LIB_PATH}:${lib}${LIBPATH_SUFFIX} ;;
98 case :${LIB_PATH}${LIB_PATH2}: in
100 *) LIB_PATH2=${LIB_PATH2}:${lib} ;;
103 case :${LIB_PATH}: in
105 ::) LIB_PATH=${lib} ;;
106 *) LIB_PATH=${LIB_PATH}:${lib} ;;
110 LIB_PATH=${LIB_PATH}${LIB_PATH2}
114 # Always search $(tooldir)/lib, aka /usr/local/TARGET/lib, except for
115 # sysrooted configurations.
116 if [ "x${use_sysroot}" != "xyes" ] ; then
117 LIB_PATH=${tool_lib}:${LIB_PATH}
120 LIB_SEARCH_DIRS=`echo ${LIB_PATH} | sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`
122 # Generate 5 or 6 script files from a master script template in
123 # ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6
124 # script files is actually used depends on command line options given
125 # to ld. (SCRIPT_NAME was set in the emulparams_file.)
127 # A .x script file is the default script.
128 # A .xr script is for linking without relocation (-r flag).
129 # A .xu script is like .xr, but *do* create constructors (-Ur flag).
130 # A .xn script is for linking with -n flag (mix text and data on same page).
131 # A .xbn script is for linking with -N flag (mix text and data on same page).
132 # A .xs script is for generating a shared library with the --shared
133 # flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the
134 # emulation parameters.
135 # A .xc script is for linking with -z combreloc; it is only generated if
136 # $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
137 # $SCRIPT_NAME is "elf".
138 # A .xsc script is for linking with --shared -z combreloc; it is generated
139 # if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
140 # $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation
143 if [ "x$SCRIPT_NAME" = "xelf" ]; then
144 GENERATE_COMBRELOC_SCRIPT=yes
147 SEGMENT_SIZE=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}}
149 # Determine DATA_ALIGNMENT for the 5 variants, using
150 # values specified in the emulparams/<emulation>.sh file or default.
152 DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}"
153 DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}"
154 DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}"
155 DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}"
156 DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"
159 DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
160 DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
161 ( echo "/* Script for ld -r: link without relocation */"
162 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
163 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
164 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xr
167 DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
169 ( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
170 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
171 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
172 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xu
175 DATA_ALIGNMENT=${DATA_ALIGNMENT_}
177 ( echo "/* Default linker script, for normal executables */"
178 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
179 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
180 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.x
183 DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
184 TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}}
185 ( echo "/* Script for -n: mix text and data on same page */"
186 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
187 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
188 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xn
191 DATA_ALIGNMENT=${DATA_ALIGNMENT_N}
192 ( echo "/* Script for -N: mix text and data on same page; don't align data */"
193 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
194 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
195 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xbn
197 if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
198 DATA_ALIGNMENT=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}}
200 COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
201 ( echo "/* Script for -z combreloc: combine and sort reloc sections */"
202 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
203 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
204 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xc
209 if test -n "$GENERATE_SHLIB_SCRIPT"; then
211 DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
213 # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR.
215 echo "/* Script for ld --shared: link shared library */"
216 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
217 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
218 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xs
219 if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
221 DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
222 COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
223 ( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
224 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
225 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
226 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xsc
232 case " $EMULATION_LIBPATH " in
233 *" ${EMULATION_NAME} "*) COMPILE_IN=true;;
236 # Generate e${EMULATION_NAME}.c.
237 . ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em