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
80 for lib in ${NATIVE_LIB_DIRS}; do
81 # The "=" is harmless if we aren't using a sysroot, but also needless.
82 if [ "x${use_sysroot}" = "xyes" ] ; then
87 ::) LIB_PATH=${lib} ;;
88 *) LIB_PATH=${LIB_PATH}:${lib} ;;
91 if test -n "$LIBPATH_SUFFIX" ; then
92 LIB_PATH=`echo ${LIB_PATH}: | sed -e s,:,${LIBPATH_SUFFIX}:,g`$LIB_PATH
97 # Always search $(tooldir)/lib, aka /usr/local/TARGET/lib, except for
98 # sysrooted configurations.
99 if [ "x${use_sysroot}" != "xyes" ] ; then
100 LIB_PATH=${tool_lib}:${LIB_PATH}
103 LIB_SEARCH_DIRS=`echo ${LIB_PATH} | sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`
105 # Generate 5 or 6 script files from a master script template in
106 # ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6
107 # script files is actually used depends on command line options given
108 # to ld. (SCRIPT_NAME was set in the emulparams_file.)
110 # A .x script file is the default script.
111 # A .xr script is for linking without relocation (-r flag).
112 # A .xu script is like .xr, but *do* create constructors (-Ur flag).
113 # A .xn script is for linking with -n flag (mix text and data on same page).
114 # A .xbn script is for linking with -N flag (mix text and data on same page).
115 # A .xs script is for generating a shared library with the --shared
116 # flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the
117 # emulation parameters.
118 # A .xc script is for linking with -z combreloc; it is only generated if
119 # $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
120 # $SCRIPT_NAME is "elf".
121 # A .xsc script is for linking with --shared -z combreloc; it is generated
122 # if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
123 # $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation
126 if [ "x$SCRIPT_NAME" = "xelf" ]; then
127 GENERATE_COMBRELOC_SCRIPT=yes
130 SEGMENT_SIZE=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}}
132 # Determine DATA_ALIGNMENT for the 5 variants, using
133 # values specified in the emulparams/<emulation>.sh file or default.
135 DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}"
136 DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}"
137 DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}"
138 DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}"
139 DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"
142 DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
143 DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
144 ( echo "/* Script for ld -r: link without relocation */"
145 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
146 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
147 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xr
150 DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
152 ( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
153 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
154 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
155 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xu
158 DATA_ALIGNMENT=${DATA_ALIGNMENT_}
160 ( echo "/* Default linker script, for normal executables */"
161 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
162 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
163 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.x
166 DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
167 TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}}
168 ( echo "/* Script for -n: mix text and data on same page */"
169 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
170 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
171 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xn
174 DATA_ALIGNMENT=${DATA_ALIGNMENT_N}
175 ( echo "/* Script for -N: mix text and data on same page; don't align data */"
176 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
177 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
178 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xbn
180 if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
181 DATA_ALIGNMENT=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}}
183 COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
184 ( echo "/* Script for -z combreloc: combine and sort reloc sections */"
185 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
186 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
187 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xc
192 if test -n "$GENERATE_SHLIB_SCRIPT"; then
194 DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
196 # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR.
198 echo "/* Script for ld --shared: link shared library */"
199 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
200 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
201 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xs
202 if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
204 DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
205 COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
206 ( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
207 . ${srcdir}/emulparams/${EMULATION_NAME}.sh
208 . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
209 ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xsc
215 case " $EMULATION_LIBPATH " in
216 *" ${EMULATION_NAME} "*) COMPILE_IN=true;;
219 # Generate e${EMULATION_NAME}.c.
220 . ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em