| 1 | #!/bin/sh |
| 2 | # genscripts.sh - generate the ld-emulation-target specific files |
| 3 | # |
| 4 | # Usage: genscripts_extra.sh \ |
| 5 | # srcdir \ |
| 6 | # libdir \ |
| 7 | # exec_prefix \ |
| 8 | # host \ |
| 9 | # target \ |
| 10 | # target_alias \ |
| 11 | # default_emulation \ |
| 12 | # native_lib_dirs \ |
| 13 | # use_sysroot \ |
| 14 | # this_emulation \ |
| 15 | # optional: |
| 16 | # tool_dir \ |
| 17 | # customizer_script |
| 18 | # |
| 19 | # Sample usage: |
| 20 | # |
| 21 | # genscripts_extra.sh \ |
| 22 | # /sources/ld \ |
| 23 | # /usr/local/lib \ |
| 24 | # /usr/local \ |
| 25 | # sparc-sun-sunos4.1.3 \ |
| 26 | # sparc-sun-sunos4.1.3 \ |
| 27 | # sparc-sun-sunos4.1.3 \ |
| 28 | # sun4 \ |
| 29 | # "" \ |
| 30 | # no \ |
| 31 | # sun3 \ |
| 32 | # sparc-sun-sunos4.1.3 \ |
| 33 | # sparc.sh |
| 34 | # |
| 35 | # produces the linker scripts: |
| 36 | # |
| 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"] |
| 42 | # and maybe: |
| 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"] |
| 46 | # |
| 47 | # It also produced the C source file: |
| 48 | # |
| 49 | # em_sun3.c |
| 50 | # |
| 51 | # which is then compiled into the linker. |
| 52 | # |
| 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. |
| 58 | |
| 59 | |
| 60 | srcdir=$1 |
| 61 | libdir=$2 |
| 62 | exec_prefix=$3 |
| 63 | host=$4 |
| 64 | target=$5 |
| 65 | target_alias=$6 |
| 66 | EMULATION_LIBPATH=$7 |
| 67 | NATIVE_LIB_DIRS=$8 |
| 68 | use_sysroot=$9 |
| 69 | shift 9 |
| 70 | EMULATION_NAME=$1 |
| 71 | TOOL_LIB=$2 |
| 72 | CUSTOMIZER_SCRIPT=$3 |
| 73 | |
| 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}/${target_alias}/lib |
| 77 | else |
| 78 | tool_lib=${exec_prefix}/${TOOL_LIB}/lib |
| 79 | fi |
| 80 | |
| 81 | if [ "x${CUSTOMIZER_SCRIPT}" = "x" ] ; then |
| 82 | CUSTOMIZER_SCRIPT=${EMULATION_NAME} |
| 83 | fi |
| 84 | CUSTOMIZER_SCRIPT="${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh" |
| 85 | |
| 86 | # Include the emulation-specific parameters: |
| 87 | . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME} |
| 88 | |
| 89 | if test -d ldscripts; then |
| 90 | true |
| 91 | else |
| 92 | mkdir ldscripts |
| 93 | fi |
| 94 | |
| 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). |
| 100 | |
| 101 | case " $EMULATION_LIBPATH " in |
| 102 | *" ${EMULATION_NAME} "*) |
| 103 | if [ "x${host}" = "x${target}" ] ; then |
| 104 | NATIVE=yes |
| 105 | USE_LIBPATH=yes |
| 106 | elif [ "x${use_sysroot}" = "xyes" ] ; then |
| 107 | USE_LIBPATH=yes |
| 108 | fi |
| 109 | ;; |
| 110 | esac |
| 111 | |
| 112 | # If the emulparams file sets NATIVE, make sure USE_LIBPATH is set also. |
| 113 | if test "x$NATIVE" = "xyes" ; then |
| 114 | USE_LIBPATH=yes |
| 115 | fi |
| 116 | |
| 117 | # Set the library search path, for libraries named by -lfoo. |
| 118 | # If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used. |
| 119 | # Otherwise, the default is set here. |
| 120 | # |
| 121 | # The format is the usual list of colon-separated directories. |
| 122 | # To force a logically empty LIB_PATH, do LIBPATH=":". |
| 123 | # |
| 124 | # If we are using a sysroot, prefix library paths with "=" to indicate this. |
| 125 | # |
| 126 | # If the emulparams file set LIBPATH_SUFFIX, prepend an extra copy of |
| 127 | # the library path with the suffix applied. |
| 128 | |
| 129 | if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes ] ; then |
| 130 | LIB_PATH2= |
| 131 | |
| 132 | libs=${NATIVE_LIB_DIRS} |
| 133 | if [ "x${use_sysroot}" != "xyes" ] ; then |
| 134 | case " ${libs} " in |
| 135 | *" ${libdir} "*) ;; |
| 136 | *) libs="${libdir} ${libs}" ;; |
| 137 | esac |
| 138 | case " ${libs} " in |
| 139 | *" ${tool_lib} "*) ;; |
| 140 | *) libs="${tool_lib} ${libs}" ;; |
| 141 | esac |
| 142 | fi |
| 143 | |
| 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 |
| 147 | lib="=${lib}" |
| 148 | fi |
| 149 | addsuffix= |
| 150 | case "${LIBPATH_SUFFIX}:${lib}" in |
| 151 | :*) ;; |
| 152 | *:*${LIBPATH_SUFFIX}) ;; |
| 153 | *) addsuffix=yes ;; |
| 154 | esac |
| 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}${LIBPATH_SUFFIX} ;; |
| 160 | esac |
| 161 | case :${LIB_PATH}:${LIB_PATH2}: in |
| 162 | *:${lib}:*) ;; |
| 163 | *::) LIB_PATH2=${lib} ;; |
| 164 | *) LIB_PATH2=${LIB_PATH2}:${lib} ;; |
| 165 | esac |
| 166 | else |
| 167 | case :${LIB_PATH2}: in |
| 168 | *:${lib}:*) ;; |
| 169 | ::) LIB_PATH2=${lib} ;; |
| 170 | *) LIB_PATH2=${LIB_PATH2}:${lib} ;; |
| 171 | esac |
| 172 | fi |
| 173 | done |
| 174 | |
| 175 | case :${LIB_PATH}:${LIB_PATH2}: in |
| 176 | *:: | ::*) LIB_PATH=${LIB_PATH}${LIB_PATH2} ;; |
| 177 | *) LIB_PATH=${LIB_PATH}:${LIB_PATH2} ;; |
| 178 | esac |
| 179 | fi |
| 180 | |
| 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} ;; |
| 188 | esac |
| 189 | fi |
| 190 | |
| 191 | LIB_SEARCH_DIRS=`echo ${LIB_PATH} | sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'` |
| 192 | |
| 193 | # We need it for testsuite. |
| 194 | set $EMULATION_LIBPATH |
| 195 | if [ "x$1" = "x$EMULATION_NAME" ]; then |
| 196 | test -d tmpdir || mkdir tmpdir |
| 197 | rm -f tmpdir/libpath.exp |
| 198 | echo "set libpath \"${LIB_PATH}\"" | sed -e 's/:/ /g' > tmpdir/libpath.exp |
| 199 | fi |
| 200 | |
| 201 | # Generate 5 or 6 script files from a master script template in |
| 202 | # ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6 |
| 203 | # script files is actually used depends on command line options given |
| 204 | # to ld. (SCRIPT_NAME was set in the emulparams_file.) |
| 205 | # |
| 206 | # A .x script file is the default script. |
| 207 | # A .xr script is for linking without relocation (-r flag). |
| 208 | # A .xu script is like .xr, but *do* create constructors (-Ur flag). |
| 209 | # A .xn script is for linking with -n flag (mix text and data on same page). |
| 210 | # A .xbn script is for linking with -N flag (mix text and data on same page). |
| 211 | # A .xs script is for generating a shared library with the --shared |
| 212 | # flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the |
| 213 | # emulation parameters. |
| 214 | # A .xc script is for linking with -z combreloc; it is only generated if |
| 215 | # $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or |
| 216 | # $SCRIPT_NAME is "elf". |
| 217 | # A .xsc script is for linking with --shared -z combreloc; it is generated |
| 218 | # if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or |
| 219 | # $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation |
| 220 | # parameters too. |
| 221 | |
| 222 | if [ "x$SCRIPT_NAME" = "xelf" ]; then |
| 223 | GENERATE_COMBRELOC_SCRIPT=yes |
| 224 | fi |
| 225 | |
| 226 | SEGMENT_SIZE=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}} |
| 227 | |
| 228 | # Determine DATA_ALIGNMENT for the 5 variants, using |
| 229 | # values specified in the emulparams/<script_to_run>.sh file or default. |
| 230 | |
| 231 | DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}" |
| 232 | DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}" |
| 233 | DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}" |
| 234 | DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}" |
| 235 | DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}" |
| 236 | |
| 237 | LD_FLAG=r |
| 238 | DATA_ALIGNMENT=${DATA_ALIGNMENT_r} |
| 239 | DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})" |
| 240 | ( echo "/* Script for ld -r: link without relocation */" |
| 241 | . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME} |
| 242 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 243 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xr |
| 244 | |
| 245 | LD_FLAG=u |
| 246 | DATA_ALIGNMENT=${DATA_ALIGNMENT_u} |
| 247 | CONSTRUCTING=" " |
| 248 | ( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */" |
| 249 | . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME} |
| 250 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 251 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xu |
| 252 | |
| 253 | LD_FLAG= |
| 254 | DATA_ALIGNMENT=${DATA_ALIGNMENT_} |
| 255 | RELOCATING=" " |
| 256 | ( echo "/* Default linker script, for normal executables */" |
| 257 | . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME} |
| 258 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 259 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.x |
| 260 | |
| 261 | LD_FLAG=n |
| 262 | DATA_ALIGNMENT=${DATA_ALIGNMENT_n} |
| 263 | TEXT_START_ADDR=${NONPAGED_TEXT_START_ADDR-${TEXT_START_ADDR}} |
| 264 | ( echo "/* Script for -n: mix text and data on same page */" |
| 265 | . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME} |
| 266 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 267 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xn |
| 268 | |
| 269 | LD_FLAG=N |
| 270 | DATA_ALIGNMENT=${DATA_ALIGNMENT_N} |
| 271 | ( echo "/* Script for -N: mix text and data on same page; don't align data */" |
| 272 | . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME} |
| 273 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 274 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xbn |
| 275 | |
| 276 | if test -n "$GENERATE_COMBRELOC_SCRIPT"; then |
| 277 | DATA_ALIGNMENT=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}} |
| 278 | LD_FLAG=c |
| 279 | COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp |
| 280 | ( echo "/* Script for -z combreloc: combine and sort reloc sections */" |
| 281 | . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME} |
| 282 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 283 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xc |
| 284 | rm -f ${COMBRELOC} |
| 285 | LD_FLAG=w |
| 286 | RELRO_NOW=" " |
| 287 | COMBRELOC=ldscripts/${EMULATION_NAME}.xw.tmp |
| 288 | ( echo "/* Script for -z combreloc -z now -z relro: combine and sort reloc sections */" |
| 289 | . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME} |
| 290 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 291 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xw |
| 292 | rm -f ${COMBRELOC} |
| 293 | COMBRELOC= |
| 294 | unset RELRO_NOW |
| 295 | fi |
| 296 | |
| 297 | if test -n "$GENERATE_SHLIB_SCRIPT"; then |
| 298 | LD_FLAG=shared |
| 299 | DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}} |
| 300 | CREATE_SHLIB=" " |
| 301 | # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR. |
| 302 | ( |
| 303 | echo "/* Script for ld --shared: link shared library */" |
| 304 | . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME} |
| 305 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 306 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xs |
| 307 | if test -n "$GENERATE_COMBRELOC_SCRIPT"; then |
| 308 | LD_FLAG=cshared |
| 309 | DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}} |
| 310 | COMBRELOC=ldscripts/${EMULATION_NAME}.xsc.tmp |
| 311 | ( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */" |
| 312 | . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME} |
| 313 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 314 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xsc |
| 315 | rm -f ${COMBRELOC} |
| 316 | LD_FLAG=wshared |
| 317 | RELRO_NOW=" " |
| 318 | COMBRELOC=ldscripts/${EMULATION_NAME}.xsw.tmp |
| 319 | ( echo "/* Script for --shared -z combreloc -z now -z relro: shared library, combine & sort relocs */" |
| 320 | . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME} |
| 321 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 322 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xsw |
| 323 | rm -f ${COMBRELOC} |
| 324 | COMBRELOC= |
| 325 | unset RELRO_NOW |
| 326 | fi |
| 327 | unset CREATE_SHLIB |
| 328 | fi |
| 329 | |
| 330 | if test -n "$GENERATE_PIE_SCRIPT"; then |
| 331 | LD_FLAG=pie |
| 332 | DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}} |
| 333 | CREATE_PIE=" " |
| 334 | # Note that TEXT_START_ADDR is set to NONPAGED_TEXT_START_ADDR. |
| 335 | ( |
| 336 | echo "/* Script for ld -pie: link position independent executable */" |
| 337 | . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME} |
| 338 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 339 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xd |
| 340 | if test -n "$GENERATE_COMBRELOC_SCRIPT"; then |
| 341 | LD_FLAG=cpie |
| 342 | DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}} |
| 343 | COMBRELOC=ldscripts/${EMULATION_NAME}.xdc.tmp |
| 344 | ( echo "/* Script for -pie -z combreloc: position independent executable, combine & sort relocs */" |
| 345 | . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME} |
| 346 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 347 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xdc |
| 348 | rm -f ${COMBRELOC} |
| 349 | LD_FLAG=wpie |
| 350 | RELRO_NOW=" " |
| 351 | COMBRELOC=ldscripts/${EMULATION_NAME}.xdw.tmp |
| 352 | ( echo "/* Script for -pie -z combreloc -z now -z relro: position independent executable, combine & sort relocs */" |
| 353 | . ${CUSTOMIZER_SCRIPT} ${EMULATION_NAME} |
| 354 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 355 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xdw |
| 356 | rm -f ${COMBRELOC} |
| 357 | COMBRELOC= |
| 358 | unset RELRO_NOW |
| 359 | fi |
| 360 | unset CREATE_PIE |
| 361 | fi |
| 362 | |
| 363 | case " $EMULATION_LIBPATH " in |
| 364 | *" ${EMULATION_NAME} "*) COMPILE_IN=true;; |
| 365 | esac |
| 366 | |
| 367 | # Generate e${EMULATION_NAME}.c. |
| 368 | . ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em |