1# Copyright (C) 2014-2022 Free Software Foundation, Inc. 2# 3# Copying and distribution of this file, with or without modification, 4# are permitted in any medium without royalty provided the copyright 5# notice and this notice are preserved. 6# 7# Unusual variables checked by this code: 8# NOP - four byte opcode for no-op (defaults to none) 9# NO_SMALL_DATA - no .sbss/.sbss2/.sdata/.sdata2 sections if not 10# empty. 11# SMALL_DATA_CTOR - .ctors contains small data. 12# SMALL_DATA_DTOR - .dtors contains small data. 13# DATA_ADDR - if end-of-text-plus-one-page isn't right for data start 14# INITIAL_READONLY_SECTIONS - at start of text segment 15# OTHER_READONLY_SECTIONS - other than .text .init .rodata ... 16# (e.g., .PARISC.milli) 17# OTHER_TEXT_SECTIONS - these get put in .text when relocating 18# INITIAL_READWRITE_SECTIONS - at start of data segment (after relro) 19# OTHER_READWRITE_SECTIONS - other than .data .bss .ctors .sdata ... 20# (e.g., .PARISC.global) 21# OTHER_RELRO_SECTIONS - other than .data.rel.ro ... 22# (e.g. PPC32 .fixup, .got[12]) 23# OTHER_RELRO_SECTIONS_2 - as above, but after .dynamic in text segment 24# OTHER_BSS_SECTIONS - other than .bss .sbss ... 25# ATTRS_SECTIONS - at the end 26# OTHER_SECTIONS - at the end 27# EXECUTABLE_SYMBOLS - symbols that must be defined for an 28# executable (e.g., _DYNAMIC_LINK) 29# TEXT_START_ADDR - the first byte of the text segment, after any 30# headers. 31# TEXT_BASE_ADDRESS - the first byte of the text segment. 32# TEXT_START_SYMBOLS - symbols that appear at the start of the 33# .text section. 34# DATA_START_SYMBOLS - symbols that appear at the start of the 35# .data section. 36# DATA_END_SYMBOLS - symbols that appear at the end of the 37# writeable data sections. 38# OTHER_GOT_SYMBOLS - symbols defined just before .got. 39# OTHER_GOT_SECTIONS - sections just after .got. 40# OTHER_SDATA_SECTIONS - sections just after .sdata. 41# OTHER_BSS_SYMBOLS - symbols that appear at the start of the 42# .bss section besides __bss_start. 43# PLT_NEXT_DATA - .plt next to data segment when .plt is in text segment. 44# DATA_PLT - .plt should be in data segment, not text segment. 45# PLT_BEFORE_GOT - .plt just before .got when .plt is in data segement. 46# BSS_PLT - .plt should be in bss segment 47# NO_REL_RELOCS - Don't include .rel.* sections in script 48# NO_RELA_RELOCS - Don't include .rela.* sections in script 49# NON_ALLOC_DYN - Place dynamic sections after data segment. 50# TEXT_DYNAMIC - .dynamic in text segment, not data segment. 51# EMBEDDED - whether this is for an embedded system. 52# SHLIB_TEXT_START_ADDR - if set, add to SIZEOF_HEADERS to set 53# start address of shared library. 54# INPUT_FILES - INPUT command of files to always include 55# WRITABLE_RODATA - if set, the .rodata section should be writable 56# INIT_START, INIT_END - statements just before and just after 57# combination of .init sections. 58# FINI_START, FINI_END - statements just before and just after 59# combination of .fini sections. 60# STACK_ADDR - start of a .stack section. 61# OTHER_SYMBOLS - symbols to place right at the end of the script. 62# ETEXT_NAME - name of a symbol for the end of the text section, 63# normally etext. 64# SEPARATE_CODE - if set, .text and similar sections containing 65# actual machine instructions must be in wholly disjoint 66# pages from any other data, including headers 67# SEPARATE_GOTPLT - if set, .got.plt should be separate output section, 68# so that .got can be in the RELRO area. It should be set to 69# the number of bytes in the beginning of .got.plt which can be 70# in the RELRO area as well. 71# USER_LABEL_PREFIX - prefix to add to user-visible symbols. 72# RODATA_NAME, SDATA_NAME, SBSS_NAME, BSS_NAME - base parts of names 73# for standard sections, without initial "." or suffixes. 74# 75# When adding sections, do note that the names of some sections are used 76# when specifying the start address of the next. 77# 78 79# Many sections come in three flavours. There is the 'real' section, 80# like ".data". Then there are the per-procedure or per-variable 81# sections, generated by -ffunction-sections and -fdata-sections in GCC, 82# and useful for --gc-sections, which for a variable "foo" might be 83# ".data.foo". Then there are the linkonce sections, for which the linker 84# eliminates duplicates, which are named like ".gnu.linkonce.d.foo". 85# The exact correspondences are: 86# 87# Section Linkonce section 88# .text .gnu.linkonce.t.foo 89# .rodata .gnu.linkonce.r.foo 90# .data .gnu.linkonce.d.foo 91# .bss .gnu.linkonce.b.foo 92# .sdata .gnu.linkonce.s.foo 93# .sbss .gnu.linkonce.sb.foo 94# .sdata2 .gnu.linkonce.s2.foo 95# .sbss2 .gnu.linkonce.sb2.foo 96# .debug_info .gnu.linkonce.wi.foo 97# .tdata .gnu.linkonce.td.foo 98# .tbss .gnu.linkonce.tb.foo 99# .lrodata .gnu.linkonce.lr.foo 100# .ldata .gnu.linkonce.l.foo 101# .lbss .gnu.linkonce.lb.foo 102# 103# Each of these can also have corresponding .rel.* and .rela.* sections. 104 105if test -n "$NOP"; then 106 FILL="=$NOP" 107else 108 FILL= 109fi 110 111test -z "$RODATA_NAME" && RODATA_NAME=rodata 112test -z "$SDATA_NAME" && SDATA_NAME=sdata 113test -z "$SBSS_NAME" && SBSS_NAME=sbss 114test -z "$BSS_NAME" && BSS_NAME=bss 115test -z "$ENTRY" && ENTRY=${USER_LABEL_PREFIX}_start 116test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT} 117test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT} 118if [ -z "$MACHINE" ]; then OUTPUT_ARCH=${ARCH}; else OUTPUT_ARCH=${ARCH}:${MACHINE}; fi 119test -z "${ELFSIZE}" && ELFSIZE=32 120test -z "${ALIGNMENT}" && ALIGNMENT="${ELFSIZE} / 8" 121test "$LD_FLAG" = "N" && DATA_ADDR=. 122test -z "${ETEXT_NAME}" && ETEXT_NAME=${USER_LABEL_PREFIX}etext 123test -n "$CREATE_SHLIB$CREATE_PIE" && test -n "$SHLIB_DATA_ADDR" && COMMONPAGESIZE="" 124test -z "$CREATE_SHLIB$CREATE_PIE" && test -n "$DATA_ADDR" && COMMONPAGESIZE="" 125test -n "$RELRO_NOW" && unset SEPARATE_GOTPLT 126test -z "$ATTRS_SECTIONS" && ATTRS_SECTIONS=".gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }" 127DATA_SEGMENT_ALIGN="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))" 128DATA_SEGMENT_RELRO_END="" 129DATA_SEGMENT_END="" 130if test -n "${COMMONPAGESIZE}"; then 131 if test "${SEGMENT_SIZE}" != "${MAXPAGESIZE}"; then 132 DATA_SEGMENT_ALIGN="ALIGN (${SEGMENT_SIZE}) - ((${MAXPAGESIZE} - .) & (${MAXPAGESIZE} - 1)); . = DATA_SEGMENT_ALIGN (${MAXPAGESIZE}, ${COMMONPAGESIZE})" 133 else 134 DATA_SEGMENT_ALIGN="DATA_SEGMENT_ALIGN (${MAXPAGESIZE}, ${COMMONPAGESIZE})" 135 fi 136 DATA_SEGMENT_END=". = DATA_SEGMENT_END (.);" 137 DATA_SEGMENT_RELRO_END=". = DATA_SEGMENT_RELRO_END (${SEPARATE_GOTPLT-0}, .);" 138fi 139if test -z "${INITIAL_READONLY_SECTIONS}${CREATE_SHLIB}"; then 140 INITIAL_READONLY_SECTIONS=".interp ${RELOCATING-0} : { *(.interp) }" 141fi 142if test -z "$PLT"; then 143 IPLT=".iplt ${RELOCATING-0} : { *(.iplt) }" 144 PLT=".plt ${RELOCATING-0} : { *(.plt)${RELOCATING+${IREL_IN_PLT+ *(.iplt)}} } 145 ${IREL_IN_PLT-$IPLT}" 146fi 147test -n "${DATA_PLT-${BSS_PLT-text}}" && TEXT_PLT= 148if test -z "$GOT"; then 149 if test -z "$SEPARATE_GOTPLT"; then 150 GOT=".got ${RELOCATING-0} : {${RELOCATING+ *(.got.plt) *(.igot.plt)} *(.got)${RELOCATING+ *(.igot)} }" 151 else 152 GOT=".got ${RELOCATING-0} : { *(.got)${RELOCATING+ *(.igot)} }" 153 GOTPLT=".got.plt ${RELOCATING-0} : { *(.got.plt)${RELOCATING+ *(.igot.plt)} }" 154 fi 155fi 156REL_IFUNC=".rel.ifunc ${RELOCATING-0} : { *(.rel.ifunc) }" 157RELA_IFUNC=".rela.ifunc ${RELOCATING-0} : { *(.rela.ifunc) }" 158REL_IPLT=".rel.iplt ${RELOCATING-0} : 159 { 160 ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rel_iplt_start = .);}} 161 *(.rel.iplt) 162 ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rel_iplt_end = .);}} 163 }" 164RELA_IPLT=".rela.iplt ${RELOCATING-0} : 165 { 166 ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rela_iplt_start = .);}} 167 *(.rela.iplt) 168 ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rela_iplt_end = .);}} 169 }" 170DYNAMIC=".dynamic ${RELOCATING-0} : { *(.dynamic) }" 171RODATA=".${RODATA_NAME} ${RELOCATING-0} : { *(.${RODATA_NAME}${RELOCATING+ .${RODATA_NAME}.* .gnu.linkonce.r.*}) }" 172DATARELRO=".data.rel.ro : { *(.data.rel.ro.local* .gnu.linkonce.d.rel.ro.local.*) *(.data.rel.ro .data.rel.ro.* .gnu.linkonce.d.rel.ro.*) }" 173DISCARDED="/DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) *(.gnu.lto_*) }" 174if test -z "${NO_SMALL_DATA}"; then 175 SBSS=".${SBSS_NAME} ${RELOCATING-0} : 176 { 177 ${RELOCATING+${SBSS_START_SYMBOLS}} 178 ${CREATE_SHLIB+*(.${SBSS_NAME}2 .${SBSS_NAME}2.* .gnu.linkonce.sb2.*)} 179 ${RELOCATING+*(.dyn${SBSS_NAME})} 180 *(.${SBSS_NAME}${RELOCATING+ .${SBSS_NAME}.* .gnu.linkonce.sb.*}) 181 ${RELOCATING+*(.scommon)} 182 ${RELOCATING+${SBSS_END_SYMBOLS}} 183 }" 184 SBSS2=".${SBSS_NAME}2 ${RELOCATING-0} : { *(.${SBSS_NAME}2${RELOCATING+ .${SBSS_NAME}2.* .gnu.linkonce.sb2.*}) }" 185 SDATA="/* We want the small data sections together, so single-instruction offsets 186 can access them all, and initialized data all before uninitialized, so 187 we can shorten the on-disk segment size. */ 188 .${SDATA_NAME} ${RELOCATING-0} : 189 { 190 ${RELOCATING+${SDATA_START_SYMBOLS}} 191 ${CREATE_SHLIB+*(.${SDATA_NAME}2 .${SDATA_NAME}2.* .gnu.linkonce.s2.*)} 192 *(.${SDATA_NAME}${RELOCATING+ .${SDATA_NAME}.* .gnu.linkonce.s.*}) 193 }" 194 SDATA2=".${SDATA_NAME}2 ${RELOCATING-0} : 195 { 196 ${RELOCATING+${SDATA2_START_SYMBOLS}} 197 *(.${SDATA_NAME}2${RELOCATING+ .${SDATA_NAME}2.* .gnu.linkonce.s2.*}) 198 }" 199 REL_SDATA=".rel.${SDATA_NAME} ${RELOCATING-0} : { *(.rel.${SDATA_NAME}${RELOCATING+ .rel.${SDATA_NAME}.* .rel.gnu.linkonce.s.*}) } 200 .rela.${SDATA_NAME} ${RELOCATING-0} : { *(.rela.${SDATA_NAME}${RELOCATING+ .rela.${SDATA_NAME}.* .rela.gnu.linkonce.s.*}) }" 201 REL_SBSS=".rel.${SBSS_NAME} ${RELOCATING-0} : { *(.rel.${SBSS_NAME}${RELOCATING+ .rel.${SBSS_NAME}.* .rel.gnu.linkonce.sb.*}) } 202 .rela.${SBSS_NAME} ${RELOCATING-0} : { *(.rela.${SBSS_NAME}${RELOCATING+ .rela.${SBSS_NAME}.* .rela.gnu.linkonce.sb.*}) }" 203 REL_SDATA2=".rel.${SDATA_NAME}2 ${RELOCATING-0} : { *(.rel.${SDATA_NAME}2${RELOCATING+ .rel.${SDATA_NAME}2.* .rel.gnu.linkonce.s2.*}) } 204 .rela.${SDATA_NAME}2 ${RELOCATING-0} : { *(.rela.${SDATA_NAME}2${RELOCATING+ .rela.${SDATA_NAME}2.* .rela.gnu.linkonce.s2.*}) }" 205 REL_SBSS2=".rel.${SBSS_NAME}2 ${RELOCATING-0} : { *(.rel.${SBSS_NAME}2${RELOCATING+ .rel.${SBSS_NAME}2.* .rel.gnu.linkonce.sb2.*}) } 206 .rela.${SBSS_NAME}2 ${RELOCATING-0} : { *(.rela.${SBSS_NAME}2${RELOCATING+ .rela.${SBSS_NAME}2.* .rela.gnu.linkonce.sb2.*}) }" 207else 208 NO_SMALL_DATA=" " 209fi 210if test -z "${SDATA_GOT}${DATA_GOT}"; then 211 if test -n "${NO_SMALL_DATA}"; then 212 DATA_GOT=" " 213 fi 214fi 215if test -z "${SDATA_GOT}${DATA_GOT}"; then 216 if test -z "${NO_SMALL_DATA}"; then 217 SDATA_GOT=" " 218 fi 219fi 220test -n "$SEPARATE_GOTPLT" && SEPARATE_GOTPLT=" " 221test "${LARGE_SECTIONS}" = "yes" && REL_LARGE=" 222 .rel.ldata ${RELOCATING-0} : { *(.rel.ldata${RELOCATING+ .rel.ldata.* .rel.gnu.linkonce.l.*}) } 223 .rela.ldata ${RELOCATING-0} : { *(.rela.ldata${RELOCATING+ .rela.ldata.* .rela.gnu.linkonce.l.*}) } 224 .rel.lbss ${RELOCATING-0} : { *(.rel.lbss${RELOCATING+ .rel.lbss.* .rel.gnu.linkonce.lb.*}) } 225 .rela.lbss ${RELOCATING-0} : { *(.rela.lbss${RELOCATING+ .rela.lbss.* .rela.gnu.linkonce.lb.*}) } 226 .rel.lrodata ${RELOCATING-0} : { *(.rel.lrodata${RELOCATING+ .rel.lrodata.* .rel.gnu.linkonce.lr.*}) } 227 .rela.lrodata ${RELOCATING-0} : { *(.rela.lrodata${RELOCATING+ .rela.lrodata.* .rela.gnu.linkonce.lr.*}) }" 228test "${LARGE_SECTIONS}" = "yes" && LARGE_BSS=" 229 .lbss ${RELOCATING-0} : 230 { 231 *(.dynlbss) 232 *(.lbss${RELOCATING+ .lbss.* .gnu.linkonce.lb.*}) 233 *(LARGE_COMMON) 234 }" 235test "${LARGE_SECTIONS}" = "yes" && LARGE_SECTIONS=" 236 .lrodata ${RELOCATING-0} ${RELOCATING+ALIGN(${MAXPAGESIZE}) + (. & (${MAXPAGESIZE} - 1))} : 237 { 238 *(.lrodata${RELOCATING+ .lrodata.* .gnu.linkonce.lr.*}) 239 } 240 .ldata ${RELOCATING-0} ${RELOCATING+ALIGN(${MAXPAGESIZE}) + (. & (${MAXPAGESIZE} - 1))} : 241 { 242 *(.ldata${RELOCATING+ .ldata.* .gnu.linkonce.l.*}) 243 ${RELOCATING+. = ALIGN(. != 0 ? ${ALIGNMENT} : 1);} 244 }" 245if test "${ENABLE_INITFINI_ARRAY}" = "yes"; then 246 SORT_INIT_ARRAY="KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))" 247 SORT_FINI_ARRAY="KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))" 248 CTORS_IN_INIT_ARRAY="EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o $OTHER_EXCLUDE_FILES) .ctors" 249 DTORS_IN_FINI_ARRAY="EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o $OTHER_EXCLUDE_FILES) .dtors" 250else 251 SORT_INIT_ARRAY="KEEP (*(SORT(.init_array.*)))" 252 SORT_FINI_ARRAY="KEEP (*(SORT(.fini_array.*)))" 253 CTORS_IN_INIT_ARRAY= 254 DTORS_IN_FINI_ARRAY= 255fi 256INIT_ARRAY=".init_array ${RELOCATING-0} : 257 { 258 ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__init_array_start = .);}} 259 ${SORT_INIT_ARRAY} 260 KEEP (*(.init_array ${CTORS_IN_INIT_ARRAY})) 261 ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__init_array_end = .);}} 262 }" 263FINI_ARRAY=".fini_array ${RELOCATING-0} : 264 { 265 ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__fini_array_start = .);}} 266 ${SORT_FINI_ARRAY} 267 KEEP (*(.fini_array ${DTORS_IN_FINI_ARRAY})) 268 ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__fini_array_end = .);}} 269 }" 270CTOR=".ctors ${CONSTRUCTING-0} : 271 { 272 ${CONSTRUCTING+${CTOR_START}} 273 /* gcc uses crtbegin.o to find the start of 274 the constructors, so we make sure it is 275 first. Because this is a wildcard, it 276 doesn't matter if the user does not 277 actually link against crtbegin.o; the 278 linker won't look for a file to match a 279 wildcard. The wildcard also means that it 280 doesn't matter which directory crtbegin.o 281 is in. */ 282 283 KEEP (*crtbegin.o(.ctors)) 284 KEEP (*crtbegin?.o(.ctors)) 285 286 /* We don't want to include the .ctor section from 287 the crtend.o file until after the sorted ctors. 288 The .ctor section from the crtend file contains the 289 end of ctors marker and it must be last */ 290 291 KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o $OTHER_EXCLUDE_FILES) .ctors)) 292 KEEP (*(SORT(.ctors.*))) 293 KEEP (*(.ctors)) 294 ${CONSTRUCTING+${CTOR_END}} 295 }" 296DTOR=".dtors ${CONSTRUCTING-0} : 297 { 298 ${CONSTRUCTING+${DTOR_START}} 299 KEEP (*crtbegin.o(.dtors)) 300 KEEP (*crtbegin?.o(.dtors)) 301 KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o $OTHER_EXCLUDE_FILES) .dtors)) 302 KEEP (*(SORT(.dtors.*))) 303 KEEP (*(.dtors)) 304 ${CONSTRUCTING+${DTOR_END}} 305 }" 306STACK=".stack ${RELOCATING-0}${RELOCATING+${STACK_ADDR}} : 307 { 308 ${RELOCATING+${USER_LABEL_PREFIX}_stack = .;} 309 *(.stack) 310 ${RELOCATING+${STACK_SENTINEL}} 311 }" 312 313TEXT_START_ADDR="SEGMENT_START(\"text-segment\", ${TEXT_START_ADDR})" 314SHLIB_TEXT_START_ADDR="SEGMENT_START(\"text-segment\", ${SHLIB_TEXT_START_ADDR:-0})" 315 316if [ -z "$SEPARATE_CODE" ]; then 317 SIZEOF_HEADERS_CODE=" + SIZEOF_HEADERS" 318else 319 SIZEOF_HEADERS_CODE= 320fi 321 322# If this is for an embedded system, don't add SIZEOF_HEADERS. 323if [ -z "$EMBEDDED" ]; then 324 test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR}${SIZEOF_HEADERS_CODE}" 325else 326 test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR}" 327fi 328 329cat <<EOF 330/* Copyright (C) 2014-2022 Free Software Foundation, Inc. 331 332 Copying and distribution of this script, with or without modification, 333 are permitted in any medium without royalty provided the copyright 334 notice and this notice are preserved. */ 335 336OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}", 337 "${LITTLE_OUTPUT_FORMAT}") 338OUTPUT_ARCH(${OUTPUT_ARCH}) 339${RELOCATING+ENTRY(${ENTRY})} 340 341${RELOCATING+${LIB_SEARCH_DIRS}} 342${RELOCATING+${EXECUTABLE_SYMBOLS}} 343${RELOCATING+${INPUT_FILES}} 344${RELOCATING- /* For some reason, the Solaris linker makes bad executables 345 if gld -r is used and the intermediate file has sections starting 346 at non-zero addresses. Could be a Solaris ld bug, could be a GNU ld 347 bug. But for now assigning the zero vmas works. */} 348 349SECTIONS 350{ 351 /* Read-only sections, merged into text segment: */ 352 ${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+PROVIDE (__executable_start = ${TEXT_START_ADDR}); . = ${TEXT_BASE_ADDRESS};}}} 353 ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR}${SIZEOF_HEADERS_CODE};}} 354 ${CREATE_PIE+${RELOCATING+PROVIDE (__executable_start = ${SHLIB_TEXT_START_ADDR}); . = ${SHLIB_TEXT_START_ADDR}${SIZEOF_HEADERS_CODE};}} 355EOF 356 357emit_early_ro() 358{ 359 cat <<EOF 360 ${INITIAL_READONLY_SECTIONS} 361 .note.gnu.build-id ${RELOCATING-0}: { *(.note.gnu.build-id) } 362EOF 363} 364 365test -n "${SEPARATE_CODE}" || emit_early_ro 366 367test -n "${RELOCATING+0}" || unset NON_ALLOC_DYN 368test -z "${NON_ALLOC_DYN}" || TEXT_DYNAMIC= 369cat > ldscripts/dyntmp.$$ <<EOF 370 ${TEXT_DYNAMIC+${DYNAMIC}} 371 .hash ${RELOCATING-0} : { *(.hash) } 372 .gnu.hash ${RELOCATING-0} : { *(.gnu.hash) } 373 .dynsym ${RELOCATING-0} : { *(.dynsym) } 374 .dynstr ${RELOCATING-0} : { *(.dynstr) } 375 .gnu.version ${RELOCATING-0} : { *(.gnu.version) } 376 .gnu.version_d ${RELOCATING-0}: { *(.gnu.version_d) } 377 .gnu.version_r ${RELOCATING-0}: { *(.gnu.version_r) } 378EOF 379 380if [ "x$COMBRELOC" = x ]; then 381 COMBRELOCCAT="cat >> ldscripts/dyntmp.$$" 382else 383 COMBRELOCCAT="cat > $COMBRELOC" 384fi 385eval $COMBRELOCCAT <<EOF 386 ${INITIAL_RELOC_SECTIONS} 387 .rel.init ${RELOCATING-0} : { *(.rel.init) } 388 .rela.init ${RELOCATING-0} : { *(.rela.init) } 389 .rel.text ${RELOCATING-0} : { *(.rel.text${RELOCATING+ .rel.text.* .rel.gnu.linkonce.t.*}) } 390 .rela.text ${RELOCATING-0} : { *(.rela.text${RELOCATING+ .rela.text.* .rela.gnu.linkonce.t.*}) } 391 .rel.fini ${RELOCATING-0} : { *(.rel.fini) } 392 .rela.fini ${RELOCATING-0} : { *(.rela.fini) } 393 .rel.${RODATA_NAME} ${RELOCATING-0} : { *(.rel.${RODATA_NAME}${RELOCATING+ .rel.${RODATA_NAME}.* .rel.gnu.linkonce.r.*}) } 394 .rela.${RODATA_NAME} ${RELOCATING-0} : { *(.rela.${RODATA_NAME}${RELOCATING+ .rela.${RODATA_NAME}.* .rela.gnu.linkonce.r.*}) } 395 ${OTHER_READONLY_RELOC_SECTIONS} 396 .rel.data.rel.ro ${RELOCATING-0} : { *(.rel.data.rel.ro${RELOCATING+ .rel.data.rel.ro.* .rel.gnu.linkonce.d.rel.ro.*}) } 397 .rela.data.rel.ro ${RELOCATING-0} : { *(.rela.data.rel.ro${RELOCATING+ .rela.data.rel.ro.* .rela.gnu.linkonce.d.rel.ro.*}) } 398 .rel.data ${RELOCATING-0} : { *(.rel.data${RELOCATING+ .rel.data.* .rel.gnu.linkonce.d.*}) } 399 .rela.data ${RELOCATING-0} : { *(.rela.data${RELOCATING+ .rela.data.* .rela.gnu.linkonce.d.*}) } 400 ${OTHER_READWRITE_RELOC_SECTIONS} 401 .rel.tdata ${RELOCATING-0} : { *(.rel.tdata${RELOCATING+ .rel.tdata.* .rel.gnu.linkonce.td.*}) } 402 .rela.tdata ${RELOCATING-0} : { *(.rela.tdata${RELOCATING+ .rela.tdata.* .rela.gnu.linkonce.td.*}) } 403 .rel.tbss ${RELOCATING-0} : { *(.rel.tbss${RELOCATING+ .rel.tbss.* .rel.gnu.linkonce.tb.*}) } 404 .rela.tbss ${RELOCATING-0} : { *(.rela.tbss${RELOCATING+ .rela.tbss.* .rela.gnu.linkonce.tb.*}) } 405 .rel.ctors ${RELOCATING-0} : { *(.rel.ctors) } 406 .rela.ctors ${RELOCATING-0} : { *(.rela.ctors) } 407 .rel.dtors ${RELOCATING-0} : { *(.rel.dtors) } 408 .rela.dtors ${RELOCATING-0} : { *(.rela.dtors) } 409 .rel.got ${RELOCATING-0} : { *(.rel.got) } 410 .rela.got ${RELOCATING-0} : { *(.rela.got) } 411 ${OTHER_GOT_RELOC_SECTIONS} 412 ${REL_SDATA} 413 ${REL_SBSS} 414 ${REL_SDATA2} 415 ${REL_SBSS2} 416 .rel.${BSS_NAME} ${RELOCATING-0} : { *(.rel.${BSS_NAME}${RELOCATING+ .rel.${BSS_NAME}.* .rel.gnu.linkonce.b.*}) } 417 .rela.${BSS_NAME} ${RELOCATING-0} : { *(.rela.${BSS_NAME}${RELOCATING+ .rela.${BSS_NAME}.* .rela.gnu.linkonce.b.*}) } 418 ${REL_LARGE} 419 ${IREL_IN_PLT+$REL_IFUNC} 420 ${IREL_IN_PLT+$RELA_IFUNC} 421 ${IREL_IN_PLT-$REL_IPLT} 422 ${IREL_IN_PLT-$RELA_IPLT} 423EOF 424 425if [ -n "$COMBRELOC" ]; then 426cat >> ldscripts/dyntmp.$$ <<EOF 427 .rel.dyn ${RELOCATING-0} : 428 { 429EOF 430sed -e '/^[ ]*[{}][ ]*$/d;/:[ ]*$/d;/\.rela\./d;/__rela_iplt_/d;s/^.*: { *\(.*\)}$/ \1/' $COMBRELOC >> ldscripts/dyntmp.$$ 431cat >> ldscripts/dyntmp.$$ <<EOF 432 } 433 .rela.dyn ${RELOCATING-0} : 434 { 435EOF 436sed -e '/^[ ]*[{}][ ]*$/d;/:[ ]*$/d;/\.rel\./d;/__rel_iplt_/d;s/^.*: { *\(.*\)}/ \1/' $COMBRELOC >> ldscripts/dyntmp.$$ 437cat >> ldscripts/dyntmp.$$ <<EOF 438 } 439EOF 440fi 441 442cat >> ldscripts/dyntmp.$$ <<EOF 443 .rel.plt ${RELOCATING-0} : 444 { 445 *(.rel.plt) 446 ${IREL_IN_PLT+${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rel_iplt_start = .);}}} 447 ${IREL_IN_PLT+${RELOCATING+*(.rel.iplt)}} 448 ${IREL_IN_PLT+${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rel_iplt_end = .);}}} 449 } 450 .rela.plt ${RELOCATING-0} : 451 { 452 *(.rela.plt) 453 ${IREL_IN_PLT+${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rela_iplt_start = .);}}} 454 ${IREL_IN_PLT+${RELOCATING+*(.rela.iplt)}} 455 ${IREL_IN_PLT+${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__rela_iplt_end = .);}}} 456 } 457 ${OTHER_PLT_RELOC_SECTIONS} 458EOF 459 460emit_dyn() 461{ 462 if test -z "${NO_REL_RELOCS}${NO_RELA_RELOCS}"; then 463 cat ldscripts/dyntmp.$$ 464 else 465 if test -z "${NO_REL_RELOCS}"; then 466 sed -e '/^[ ]*\.rela\.[^}]*$/,/}/d;/^[ ]*\.rela\./d;/__rela_iplt_/d' ldscripts/dyntmp.$$ 467 fi 468 if test -z "${NO_RELA_RELOCS}"; then 469 sed -e '/^[ ]*\.rel\.[^}]*$/,/}/d;/^[ ]*\.rel\./d;/__rel_iplt_/d' ldscripts/dyntmp.$$ 470 fi 471 fi 472 rm -f ldscripts/dyntmp.$$ 473} 474 475test -n "${NON_ALLOC_DYN}${SEPARATE_CODE}" || emit_dyn 476 477cat <<EOF 478 .init ${RELOCATING-0}${RELOCATING+${INIT_ADDR}} : 479 { 480 ${RELOCATING+${INIT_START}} 481 KEEP (*(SORT_NONE(.init))) 482 ${RELOCATING+${INIT_END}} 483 } ${FILL} 484 485 ${TEXT_PLT+${PLT_NEXT_DATA-${PLT}}} 486 ${TINY_READONLY_SECTION} 487 .text ${RELOCATING-0} : 488 { 489 ${RELOCATING+${TEXT_START_SYMBOLS}} 490 ${RELOCATING+*(.text.unlikely .text.*_unlikely .text.unlikely.*)} 491 ${RELOCATING+*(.text.exit .text.exit.*)} 492 ${RELOCATING+*(.text.startup .text.startup.*)} 493 ${RELOCATING+*(.text.hot .text.hot.*)} 494 ${RELOCATING+*(SORT(.text.sorted.*))} 495 *(.text .stub${RELOCATING+ .text.* .gnu.linkonce.t.*}) 496 /* .gnu.warning sections are handled specially by elf.em. */ 497 *(.gnu.warning) 498 ${RELOCATING+${OTHER_TEXT_SECTIONS}} 499 } ${FILL} 500 .fini ${RELOCATING-0}${RELOCATING+${FINI_ADDR}} : 501 { 502 ${RELOCATING+${FINI_START}} 503 KEEP (*(SORT_NONE(.fini))) 504 ${RELOCATING+${FINI_END}} 505 } ${FILL} 506 ${RELOCATING+PROVIDE (__${ETEXT_NAME} = .);} 507 ${RELOCATING+PROVIDE (_${ETEXT_NAME} = .);} 508 ${RELOCATING+PROVIDE (${ETEXT_NAME} = .);} 509EOF 510 511if test -n "${SEPARATE_CODE}"; then 512 if test -n "${RODATA_ADDR}"; then 513 RODATA_ADDR="\ 514SEGMENT_START(\"rodata-segment\", ${RODATA_ADDR}) + SIZEOF_HEADERS" 515 else 516 RODATA_ADDR="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))" 517 RODATA_ADDR="SEGMENT_START(\"rodata-segment\", ${RODATA_ADDR})" 518 fi 519 if test -n "${SHLIB_RODATA_ADDR}"; then 520 SHLIB_RODATA_ADDR="\ 521SEGMENT_START(\"rodata-segment\", ${SHLIB_RODATA_ADDR}) + SIZEOF_HEADERS" 522 else 523 SHLIB_RODATA_ADDR="SEGMENT_START(\"rodata-segment\", ${SHLIB_RODATA_ADDR})" 524 SHLIB_RODATA_ADDR="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))" 525 fi 526 cat <<EOF 527 /* Adjust the address for the rodata segment. We want to adjust up to 528 the same address within the page on the next page up. */ 529 ${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+. = ${RODATA_ADDR};}}} 530 ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_RODATA_ADDR};}} 531 ${CREATE_PIE+${RELOCATING+. = ${SHLIB_RODATA_ADDR};}} 532EOF 533 emit_early_ro 534 emit_dyn 535fi 536 537cat <<EOF 538 ${WRITABLE_RODATA-${RODATA}} 539 .${RODATA_NAME}1 ${RELOCATING-0} : { *(.${RODATA_NAME}1) } 540 ${CREATE_SHLIB-${SDATA2}} 541 ${CREATE_SHLIB-${SBSS2}} 542 ${OTHER_READONLY_SECTIONS} 543 .eh_frame_hdr ${RELOCATING-0} : { *(.eh_frame_hdr) ${RELOCATING+*(.eh_frame_entry .eh_frame_entry.*)} } 544 .eh_frame ${RELOCATING-0} : ONLY_IF_RO { KEEP (*(.eh_frame)) ${RELOCATING+*(.eh_frame.*)} } 545 .gcc_except_table ${RELOCATING-0} : ONLY_IF_RO { *(.gcc_except_table${RELOCATING+ .gcc_except_table.*}) } 546 .gnu_extab ${RELOCATING-0} : ONLY_IF_RO { *(.gnu_extab*) } 547 /* These sections are generated by the Sun/Oracle C++ compiler. */ 548 .exception_ranges ${RELOCATING-0} : ONLY_IF_RO { *(.exception_ranges${RELOCATING+*}) } 549 ${TEXT_PLT+${PLT_NEXT_DATA+${PLT}}} 550 551 /* Adjust the address for the data segment. We want to adjust up to 552 the same address within the page on the next page up. */ 553 ${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+. = ${DATA_ADDR-${DATA_SEGMENT_ALIGN}};}}} 554 ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_DATA_ADDR-${DATA_SEGMENT_ALIGN}};}} 555 ${CREATE_PIE+${RELOCATING+. = ${SHLIB_DATA_ADDR-${DATA_SEGMENT_ALIGN}};}} 556 557 /* Exception handling */ 558 .eh_frame ${RELOCATING-0} : ONLY_IF_RW { KEEP (*(.eh_frame)) ${RELOCATING+*(.eh_frame.*)} } 559 .gnu_extab ${RELOCATING-0} : ONLY_IF_RW { *(.gnu_extab) } 560 .gcc_except_table ${RELOCATING-0} : ONLY_IF_RW { *(.gcc_except_table${RELOCATING+ .gcc_except_table.*}) } 561 .exception_ranges ${RELOCATING-0} : ONLY_IF_RW { *(.exception_ranges${RELOCATING+*}) } 562 563 /* Thread Local Storage sections */ 564 .tdata ${RELOCATING-0} : { ${RELOCATING+PROVIDE_HIDDEN(.tdata = .); }*(.tdata${RELOCATING+ .tdata.* .gnu.linkonce.td.*}) } 565 .tbss ${RELOCATING-0} : { ${RELOCATING+PROVIDE_HIDDEN(.tbss = .); }*(.tbss${RELOCATING+ .tbss.* .gnu.linkonce.tb.*})${RELOCATING+ *(.tcommon)} } 566 567 .preinit_array ${RELOCATING-0} : 568 { 569 ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__preinit_array_start = .);}} 570 KEEP (*(.preinit_array)) 571 ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (${USER_LABEL_PREFIX}__preinit_array_end = .);}} 572 } 573 ${RELOCATING+${INIT_ARRAY}} 574 ${RELOCATING+${FINI_ARRAY}} 575 ${SMALL_DATA_CTOR-${RELOCATING+${CTOR}}} 576 ${SMALL_DATA_DTOR-${RELOCATING+${DTOR}}} 577 .jcr ${RELOCATING-0} : { KEEP (*(.jcr)) } 578 579 ${RELOCATING+${DATARELRO}} 580 ${OTHER_RELRO_SECTIONS} 581 ${TEXT_DYNAMIC-${DYNAMIC}} 582 ${OTHER_RELRO_SECTIONS_2} 583 ${DATA_GOT+${RELRO_NOW+${DATA_PLT+${PLT_BEFORE_GOT+${PLT}}}}} 584 ${DATA_GOT+${RELRO_NOW+${GOT}}} 585 ${DATA_GOT+${RELRO_NOW+${GOTPLT}}} 586 ${DATA_GOT+${RELRO_NOW-${SEPARATE_GOTPLT+${GOT}}}} 587 ${RELOCATING+${DATA_SEGMENT_RELRO_END}} 588 ${INITIAL_READWRITE_SECTIONS} 589 ${DATA_SDATA+${SDATA}} 590 ${DATA_SDATA+${OTHER_SDATA_SECTIONS}} 591 ${DATA_SDATA+${SBSS}} 592 ${DATA_GOT+${RELRO_NOW-${DATA_PLT+${PLT_BEFORE_GOT+${PLT}}}}} 593 ${DATA_GOT+${RELRO_NOW-${SEPARATE_GOTPLT-${GOT}}}} 594 ${DATA_GOT+${RELRO_NOW-${GOTPLT}}} 595 596 ${DATA_PLT+${PLT_BEFORE_GOT-${PLT}}} 597 598 .data ${RELOCATING-0} : 599 { 600 ${RELOCATING+${DATA_START_SYMBOLS}} 601 *(.data${RELOCATING+ .data.* .gnu.linkonce.d.*}) 602 ${CONSTRUCTING+SORT(CONSTRUCTORS)} 603 } 604 .data1 ${RELOCATING-0} : { *(.data1) } 605 ${WRITABLE_RODATA+${RODATA}} 606 ${OTHER_READWRITE_SECTIONS} 607 ${SMALL_DATA_CTOR+${RELOCATING+${CTOR}}} 608 ${SMALL_DATA_DTOR+${RELOCATING+${DTOR}}} 609 ${SDATA_GOT+${DATA_PLT+${PLT_BEFORE_GOT+${PLT}}}} 610 ${SDATA_GOT+${RELOCATING+${OTHER_GOT_SYMBOLS+. = .; ${OTHER_GOT_SYMBOLS}}}} 611 ${SDATA_GOT+${GOT}} 612 ${SDATA_GOT+${OTHER_GOT_SECTIONS}} 613 ${DATA_SDATA-${SDATA}} 614 ${DATA_SDATA-${OTHER_SDATA_SECTIONS}} 615 ${RELOCATING+${DATA_END_SYMBOLS-${USER_LABEL_PREFIX}_edata = .; PROVIDE (${USER_LABEL_PREFIX}edata = .);}} 616 ${RELOCATING+. = .;} 617 ${RELOCATING+${USER_LABEL_PREFIX}__bss_start = .;} 618 ${RELOCATING+${OTHER_BSS_SYMBOLS}} 619 ${DATA_SDATA-${SBSS}} 620 ${BSS_PLT+${PLT}} 621 .${BSS_NAME} ${RELOCATING-0} : 622 { 623 ${RELOCATING+*(.dyn${BSS_NAME})} 624 *(.${BSS_NAME}${RELOCATING+ .${BSS_NAME}.* .gnu.linkonce.b.*}) 625 ${RELOCATING+*(COMMON) 626 /* Align here to ensure that the .bss section occupies space up to 627 _end. Align after .bss to ensure correct alignment even if the 628 .bss section disappears because there are no input sections. 629 FIXME: Why do we need it? When there is no .bss section, we do not 630 pad the .data section. */ 631 . = ALIGN(. != 0 ? ${ALIGNMENT} : 1);} 632 } 633 ${OTHER_BSS_SECTIONS} 634 ${LARGE_BSS_AFTER_BSS+${LARGE_BSS}} 635 ${RELOCATING+${OTHER_BSS_END_SYMBOLS}} 636 ${RELOCATING+. = ALIGN(${ALIGNMENT});} 637EOF 638 639LARGE_DATA_ADDR=". = SEGMENT_START(\"ldata-segment\", ${LARGE_DATA_ADDR-.});" 640SHLIB_LARGE_DATA_ADDR=". = SEGMENT_START(\"ldata-segment\", ${SHLIB_LARGE_DATA_ADDR-.});" 641 642 cat <<EOF 643 ${RELOCATING+${CREATE_SHLIB-${CREATE_PIE-${LARGE_DATA_ADDR}}}} 644 ${RELOCATING+${CREATE_SHLIB+${SHLIB_LARGE_DATA_ADDR}}} 645 ${RELOCATING+${CREATE_PIE+${SHLIB_LARGE_DATA_ADDR}}} 646 ${LARGE_SECTIONS} 647 ${LARGE_BSS_AFTER_BSS-${LARGE_BSS}} 648 ${RELOCATING+. = ALIGN(${ALIGNMENT});} 649 ${RELOCATING+${OTHER_END_SYMBOLS}} 650 ${RELOCATING+${END_SYMBOLS-${USER_LABEL_PREFIX}_end = .; PROVIDE (${USER_LABEL_PREFIX}end = .);}} 651 ${RELOCATING+${DATA_SEGMENT_END}} 652 ${TINY_DATA_SECTION} 653 ${TINY_BSS_SECTION} 654 ${STACK_ADDR+${STACK}} 655EOF 656 657test -z "${NON_ALLOC_DYN}" || emit_dyn 658 659cat <<EOF 660 /* Stabs debugging sections. */ 661 .stab 0 : { *(.stab) } 662 .stabstr 0 : { *(.stabstr) } 663 .stab.excl 0 : { *(.stab.excl) } 664 .stab.exclstr 0 : { *(.stab.exclstr) } 665 .stab.index 0 : { *(.stab.index) } 666 .stab.indexstr 0 : { *(.stab.indexstr) } 667 668 .comment 0 : { *(.comment) } 669 670EOF 671 672. $srcdir/scripttempl/DWARF.sc 673 674cat <<EOF 675 ${ATTRS_SECTIONS} 676 ${OTHER_SECTIONS} 677 ${RELOCATING+${OTHER_SYMBOLS}} 678 ${RELOCATING+${DISCARDED}} 679} 680EOF 681