Wolfgang Thallergcc16 merge934c3885 months agoHistory
1105 lines · 37.9 KB · Scala
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# Copyright (C) 2014-2026 Free Software Foundation, Inc.## Copying and distribution of this file, with or without modification,# are permitted in any medium without royalty provided the copyright# notice and this notice are preserved.## Unusual variables checked by this code:#	NOP - four byte opcode for no-op (defaults to none)#	NO_SMALL_DATA - no .sbss/.sbss2/.sdata/.sdata2 sections if not#		empty.#	HAVE_NOINIT - Include a .noinit output section in the script.#	HAVE_PERSISTENT - Include a .persistent output section in the script.#	HAVE_DT_RELR - Include a .relr.dyn output section in the script.#	SMALL_DATA_CTOR - .ctors contains small data.#	SMALL_DATA_DTOR - .dtors contains small data.#	DATA_ADDR - if end-of-text-plus-one-page isn't right for data start#	INITIAL_READONLY_SECTIONS - at start of text segment#	OTHER_READONLY_SECTIONS - other than .text .init .rodata ...#		(e.g., .PARISC.milli)#	OTHER_TEXT_SECTIONS - these get put in .text when relocating#	INITIAL_READWRITE_SECTIONS - at start of data segment (after relro)#	OTHER_READWRITE_SECTIONS - other than .data .bss .ctors .sdata ...#		(e.g., .PARISC.global)#	OTHER_RELRO_SECTIONS - other than .data.rel.ro ...#		(e.g. PPC32 .fixup, .got[12])#	OTHER_RELRO_SECTIONS_2 - as above, but after .dynamic in text segment#	OTHER_BSS_SECTIONS - other than .bss .sbss ...#	ATTRS_SECTIONS - at the end#	OTHER_SECTIONS - at the end#	EXECUTABLE_SYMBOLS - symbols that must be defined for an#		executable (e.g., _DYNAMIC_LINK)#       TEXT_START_ADDR - the first byte of the text segment, after any#               headers.#       TEXT_BASE_ADDRESS - the first byte of the text segment.#	TEXT_START_SYMBOLS - symbols that appear at the start of the#		.text section.#	DATA_START_SYMBOLS - symbols that appear at the start of the#		.data section.#	DATA_END_SYMBOLS - symbols that appear at the end of the#		writeable data sections.#	OTHER_GOT_SYMBOLS - symbols defined just before .got.#	OTHER_GOT_SECTIONS - sections just after .got.#	OTHER_PLT_SECTIONS - sections just after .plt.#	OTHER_SDATA_SECTIONS - sections just after .sdata.#	OTHER_BSS_SYMBOLS - symbols that appear at the start of the#		.bss section besides __bss_start.#	PLT_NEXT_DATA - .plt next to data segment when .plt is in text segment.#	DATA_PLT - .plt should be in data segment, not text segment.#	PLT_BEFORE_GOT - .plt just before .got when .plt is in data segement.#	BSS_PLT - .plt should be in bss segment#	NO_REL_RELOCS - Don't include .rel.* sections in script#	NO_RELA_RELOCS - Don't include .rela.* sections in script#	NON_ALLOC_DYN - Place dynamic sections after data segment.#	TEXT_DYNAMIC - .dynamic in text segment, not data segment.#	EMBEDDED - whether this is for an embedded system.#	SHLIB_TEXT_START_ADDR - if set, add to SIZEOF_HEADERS to set#		start address of shared library.#	INPUT_FILES - INPUT command of files to always include#	WRITABLE_RODATA - if set, the .rodata section should be writable#	INIT_START, INIT_END -  statements just before and just after#	combination of .init sections.#	FINI_START, FINI_END - statements just before and just after#	combination of .fini sections.#	STACK_ADDR - start of a .stack section.#	OTHER_SYMBOLS - symbols to place right at the end of the script.#	ETEXT_NAME - name of a symbol for the end of the text section,#		normally etext.#	ETEXT_LAST_IN_RODATA_SEGMENT - emit ETEXT_NAME after all sections in#		the read-only data segment (which may or may not be equal to#		the code segment), instead of after just the code parts.#	SEPARATE_CODE - if set, .text and similar sections containing#		actual machine instructions must be in wholly disjoint#		pages from any other data, including headers#	SEPARATE_GOTPLT - if set, .got.plt should be separate output section,#		so that .got can be in the RELRO area.  It should be set to#		the number of bytes in the beginning of .got.plt which can be#		in the RELRO area as well.#	USER_LABEL_PREFIX - prefix to add to user-visible symbols.#	RODATA_NAME, SDATA_NAME, SBSS_NAME, BSS_NAME - base parts of names#		for standard sections, without initial "." or suffixes.#       SYMBOL_ABI_ALIGNMENT - minimum alignment in bytes which needs to be#               applied to every symbol definition#       ALL_TEXT_BEFORE_RO - put all code sections before read-only#               sections## When adding sections, do note that the names of some sections are used# when specifying the start address of the next.# #  Many sections come in three flavours.  There is the 'real' section,#  like ".data".  Then there are the per-procedure or per-variable#  sections, generated by -ffunction-sections and -fdata-sections in GCC,#  and useful for --gc-sections, which for a variable "foo" might be#  ".data.foo".  Then there are the linkonce sections, for which the linker#  eliminates duplicates, which are named like ".gnu.linkonce.d.foo".#  The exact correspondences are:##  Section	Linkonce section#  .text	.gnu.linkonce.t.foo#  .rodata	.gnu.linkonce.r.foo#  .data	.gnu.linkonce.d.foo#  .bss		.gnu.linkonce.b.foo#  .sdata	.gnu.linkonce.s.foo#  .sbss	.gnu.linkonce.sb.foo#  .sdata2	.gnu.linkonce.s2.foo#  .sbss2	.gnu.linkonce.sb2.foo#  .debug_info	.gnu.linkonce.wi.foo#  .tdata	.gnu.linkonce.td.foo#  .tbss	.gnu.linkonce.tb.foo#  .lrodata	.gnu.linkonce.lr.foo#  .ldata	.gnu.linkonce.l.foo#  .lbss	.gnu.linkonce.lb.foo#  .noinit	.gnu.linkonce.n.foo#  .persistent	.gnu.linkonce.p.foo##  Each of these can also have corresponding .rel.* and .rela.* sections. # ------------------------------------------------------------------------# The multiple forms of conditional shell script syntax that are used in# this file can be confusing, so here is a quick explanation of how they# work:## The following all mean "if foo is defined then do/insert <stuff>":##    test -z "$foo" || <stuff> #    test -n "$foo" && <stuff>#    if test -n "$foo"; then <stuff>#    if [ -n "$foo" ]; then <stuff>#    ${foo-<stuff>}## Whereas the following all mean "if foo is undefined then do/insert <stuff>":##    test -n "$foo" || <stuff>#    test -z "$foo" && <stuff>#    if test -z "$foo"; then <stuff>#    if [ -z "$foo" ]; then <stuff>#    ${foo+<stuff>}## If multiple symbols are tested together then they operate as an IOR for# positive tests and a NOR for negative tests.  ie, the following all do# <stuff> if either or both of <foo> and <bar> are defined:##    test -z "$foo$bar" || <stuff> #    test -n "$foo$bar" && <stuff>#    if test -n "$foo$bar"; then <stuff>## Whilst the following only do <stuff> if neither <foo> nor <bar> are defined:##    test -n "$foo$bar" || <stuff>#    if -z "$foo$bar"; then <stuff>#    test -z "$foo$bar" && <stuff>## Also:#   foo=${foo-${bar-${baz}}}# means:#   If foo is defined, leave it unchanged.  Otherwise if bar is defined#   then set foo equal to bar, otherwise set foo equal to baz.# ------------------------------------------------------------------------ if test -n "$NOP"; then  FILL="=$NOP"else  FILL=fi test -n "$CREATE_SHLIB$CREATE_PIE" && CREATE_PIC=" "test -z "$RODATA_NAME" && RODATA_NAME=rodatatest -z "$SDATA_NAME" && SDATA_NAME=sdatatest -z "$SBSS_NAME" && SBSS_NAME=sbsstest -z "$BSS_NAME" && BSS_NAME=bsstest -z "$ENTRY" && ENTRY=${USER_LABEL_PREFIX}_starttest -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}if [ -z "$MACHINE" ]; then OUTPUT_ARCH=${ARCH}; else OUTPUT_ARCH=${ARCH}:${MACHINE}; fitest -z "${ELFSIZE}" && ELFSIZE=32test -z "${ALIGNMENT}" && ALIGNMENT="${ELFSIZE} / 8"test "$LD_FLAG" = "N" && DATA_ADDR=.test -z "${ETEXT_NAME}" && ETEXT_NAME=${USER_LABEL_PREFIX}etexttest -n "$RELRO_NOW" && unset SEPARATE_GOTPLTtest -z "$ATTRS_SECTIONS" && ATTRS_SECTIONS=".gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }" if test -z "$DATA_SEGMENT_ALIGN"; then  test -n "$CREATE_SHLIB$CREATE_PIE" && test -n "$SHLIB_DATA_ADDR" && COMMONPAGESIZE=""  test -z "$CREATE_SHLIB$CREATE_PIE" && test -n "$DATA_ADDR" && COMMONPAGESIZE=""  DATA_SEGMENT_ALIGN="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))"  DATA_SEGMENT_RELRO_END=""  DATA_SEGMENT_END=""  if test -n "${COMMONPAGESIZE}"; then    if test "${SEGMENT_SIZE}" != "${MAXPAGESIZE}"; then      DATA_SEGMENT_ALIGN="ALIGN (${SEGMENT_SIZE}) - ((${MAXPAGESIZE} - .) & (${MAXPAGESIZE} - 1)); \      . = DATA_SEGMENT_ALIGN (${MAXPAGESIZE}, ${COMMONPAGESIZE})"    else      DATA_SEGMENT_ALIGN="DATA_SEGMENT_ALIGN (${MAXPAGESIZE}, ${COMMONPAGESIZE})"    fi    DATA_SEGMENT_END=". = DATA_SEGMENT_END (.);"    DATA_SEGMENT_RELRO_END=". = DATA_SEGMENT_RELRO_END (${SEPARATE_GOTPLT-0}, .);"  fifi if test -z "${INITIAL_READONLY_SECTIONS}${CREATE_SHLIB}"; then  INITIAL_READONLY_SECTIONS=".interp       ${RELOCATING-0} : { *(.interp) }"fi if test -z "$PLT"; then  IPLT=".iplt         ${RELOCATING-0} : { *(.iplt) }"  PLT=".plt          ${RELOCATING-0} : { *(.plt)${RELOCATING+${IREL_IN_PLT+ *(.iplt)}} }  ${IREL_IN_PLT-$IPLT}"fi test -n "${DATA_PLT-${BSS_PLT-text}}" && TEXT_PLT= if test -z "$GOT"; then  if test -z "$SEPARATE_GOTPLT"; then    GOT=".got          ${RELOCATING-0} : {${RELOCATING+ *(.got.plt) *(.igot.plt)} *(.got)${RELOCATING+ *(.igot)} }"  else    GOT=".got          ${RELOCATING-0} : { *(.got)${RELOCATING+ *(.igot)} }"    GOTPLT=".got.plt      ${RELOCATING-0} : { *(.got.plt)${RELOCATING+ *(.igot.plt)} }"  fifi def_symbol(){    if [ -z "${SYMBOL_ABI_ALIGNMENT}" ]; then	echo "${USER_LABEL_PREFIX}$1 = ."    else	echo "${USER_LABEL_PREFIX}$1 = ALIGN(${SYMBOL_ABI_ALIGNMENT})"    fi} REL_IFUNC=".rel.ifunc    ${RELOCATING-0} : { *(.rel.ifunc) }"RELA_IFUNC=".rela.ifunc   ${RELOCATING-0} : { *(.rela.ifunc) }"REL_IPLT=".rel.iplt     ${RELOCATING-0} :    {      ${RELOCATING+${CREATE_PIC-PROVIDE_HIDDEN ($(def_symbol "__rel_iplt_start"));}}      *(.rel.iplt)      ${RELOCATING+${CREATE_PIC-PROVIDE_HIDDEN ($(def_symbol "__rel_iplt_end"));}}    }"RELA_IPLT=".rela.iplt    ${RELOCATING-0} :    {      ${RELOCATING+${CREATE_PIC-PROVIDE_HIDDEN ($(def_symbol "__rela_iplt_start"));}}      *(.rela.iplt)      ${RELOCATING+${CREATE_PIC-PROVIDE_HIDDEN ($(def_symbol "__rela_iplt_end"));}}    }"DYNAMIC=".dynamic      ${RELOCATING-0} : { *(.dynamic) }"RODATA=".${RODATA_NAME}       ${RELOCATING-0} : { *(.${RODATA_NAME}${RELOCATING+ .${RODATA_NAME}.* .gnu.linkonce.r.*}) }"DATARELRO=".data.rel.ro : { *(.data.rel.ro.local* .gnu.linkonce.d.rel.ro.local.*) *(.data.rel.ro .data.rel.ro.* .gnu.linkonce.d.rel.ro.*) }"DISCARDED="/DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) *(.gnu.lto_*) *(.gnu_object_only) }"if test -z "${NO_SMALL_DATA}"; then  SBSS=".${SBSS_NAME}         ${RELOCATING-0} :  {    ${RELOCATING+${SBSS_START_SYMBOLS}}    ${CREATE_SHLIB+*(.${SBSS_NAME}2 .${SBSS_NAME}2.* .gnu.linkonce.sb2.*)}    ${RELOCATING+*(.dyn${SBSS_NAME})}    *(.${SBSS_NAME}${RELOCATING+ .${SBSS_NAME}.* .gnu.linkonce.sb.*})    ${RELOCATING+*(.scommon)}    ${RELOCATING+${SBSS_END_SYMBOLS}}  }"  SBSS2=".${SBSS_NAME}2        ${RELOCATING-0} : { *(.${SBSS_NAME}2${RELOCATING+ .${SBSS_NAME}2.* .gnu.linkonce.sb2.*}) }"  SDATA="/* We want the small data sections together, so single-instruction offsets     can access them all, and initialized data all before uninitialized, so     we can shorten the on-disk segment size.  */  .${SDATA_NAME}        ${RELOCATING-0} :  {    ${RELOCATING+${SDATA_START_SYMBOLS}}    ${CREATE_SHLIB+*(.${SDATA_NAME}2 .${SDATA_NAME}2.* .gnu.linkonce.s2.*)}    *(.${SDATA_NAME}${RELOCATING+ .${SDATA_NAME}.* .gnu.linkonce.s.*})  }"  SDATA2=".${SDATA_NAME}2       ${RELOCATING-0} :  {    ${RELOCATING+${SDATA2_START_SYMBOLS}}    *(.${SDATA_NAME}2${RELOCATING+ .${SDATA_NAME}2.* .gnu.linkonce.s2.*})  }"  REL_SDATA=".rel.${SDATA_NAME}    ${RELOCATING-0} : { *(.rel.${SDATA_NAME}${RELOCATING+ .rel.${SDATA_NAME}.* .rel.gnu.linkonce.s.*}) }  .rela.${SDATA_NAME}   ${RELOCATING-0} : { *(.rela.${SDATA_NAME}${RELOCATING+ .rela.${SDATA_NAME}.* .rela.gnu.linkonce.s.*}) }"  REL_SBSS=".rel.${SBSS_NAME}     ${RELOCATING-0} : { *(.rel.${SBSS_NAME}${RELOCATING+ .rel.${SBSS_NAME}.* .rel.gnu.linkonce.sb.*}) }  .rela.${SBSS_NAME}    ${RELOCATING-0} : { *(.rela.${SBSS_NAME}${RELOCATING+ .rela.${SBSS_NAME}.* .rela.gnu.linkonce.sb.*}) }"  REL_SDATA2=".rel.${SDATA_NAME}2   ${RELOCATING-0} : { *(.rel.${SDATA_NAME}2${RELOCATING+ .rel.${SDATA_NAME}2.* .rel.gnu.linkonce.s2.*}) }  .rela.${SDATA_NAME}2  ${RELOCATING-0} : { *(.rela.${SDATA_NAME}2${RELOCATING+ .rela.${SDATA_NAME}2.* .rela.gnu.linkonce.s2.*}) }"  REL_SBSS2=".rel.${SBSS_NAME}2    ${RELOCATING-0} : { *(.rel.${SBSS_NAME}2${RELOCATING+ .rel.${SBSS_NAME}2.* .rel.gnu.linkonce.sb2.*}) }  .rela.${SBSS_NAME}2   ${RELOCATING-0} : { *(.rela.${SBSS_NAME}2${RELOCATING+ .rela.${SBSS_NAME}2.* .rela.gnu.linkonce.sb2.*}) }"else  NO_SMALL_DATA=" "fi if test -z "${SDATA_GOT}${DATA_GOT}"; then  if test -n "${NO_SMALL_DATA}"; then    DATA_GOT=" "  fifi if test -z "${SDATA_GOT}${DATA_GOT}"; then  if test -z "${NO_SMALL_DATA}"; then    SDATA_GOT=" "  fifi test -n "$SEPARATE_GOTPLT" && SEPARATE_GOTPLT=" " test "${LARGE_SECTIONS}" = "yes" && REL_LARGE="  .rel.ldata    ${RELOCATING-0} : { *(.rel.ldata${RELOCATING+ .rel.ldata.* .rel.gnu.linkonce.l.*}) }  .rela.ldata   ${RELOCATING-0} : { *(.rela.ldata${RELOCATING+ .rela.ldata.* .rela.gnu.linkonce.l.*}) }  .rel.lbss     ${RELOCATING-0} : { *(.rel.lbss${RELOCATING+ .rel.lbss.* .rel.gnu.linkonce.lb.*}) }  .rela.lbss    ${RELOCATING-0} : { *(.rela.lbss${RELOCATING+ .rela.lbss.* .rela.gnu.linkonce.lb.*}) }  .rel.lrodata  ${RELOCATING-0} : { *(.rel.lrodata${RELOCATING+ .rel.lrodata.* .rel.gnu.linkonce.lr.*}) }  .rela.lrodata ${RELOCATING-0} : { *(.rela.lrodata${RELOCATING+ .rela.lrodata.* .rela.gnu.linkonce.lr.*}) }" if test "${ENABLE_INITFINI_ARRAY}" = "yes"; then  SORT_INIT_ARRAY="KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))"  SORT_FINI_ARRAY="KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))"  CTORS_IN_INIT_ARRAY="EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o $OTHER_EXCLUDE_FILES) .ctors"  DTORS_IN_FINI_ARRAY="EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o $OTHER_EXCLUDE_FILES) .dtors"else  SORT_INIT_ARRAY="KEEP (*(SORT(.init_array.*)))"  SORT_FINI_ARRAY="KEEP (*(SORT(.fini_array.*)))"  CTORS_IN_INIT_ARRAY=  DTORS_IN_FINI_ARRAY=fiCTOR=".ctors        ${CONSTRUCTING-0} :  {    ${CONSTRUCTING+${CTOR_START}}    /* gcc uses crtbegin.o to find the start of       the constructors, so we make sure it is       first.  Because this is a wildcard, it       doesn't matter if the user does not       actually link against crtbegin.o; the       linker won't look for a file to match a       wildcard.  The wildcard also means that it       doesn't matter which directory crtbegin.o       is in.  */     KEEP (*crtbegin.o(.ctors))    KEEP (*crtbegin?.o(.ctors))     /* We don't want to include the .ctor section from       the crtend.o file until after the sorted ctors.       The .ctor section from the crtend file contains the       end of ctors marker and it must be last */     KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o $OTHER_EXCLUDE_FILES) .ctors))    KEEP (*(SORT(.ctors.*)))    KEEP (*(.ctors))    ${CONSTRUCTING+${CTOR_END}}  }"DTOR=".dtors        ${CONSTRUCTING-0} :  {    ${CONSTRUCTING+${DTOR_START}}    KEEP (*crtbegin.o(.dtors))    KEEP (*crtbegin?.o(.dtors))    KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o $OTHER_EXCLUDE_FILES) .dtors))    KEEP (*(SORT(.dtors.*)))    KEEP (*(.dtors))    ${CONSTRUCTING+${DTOR_END}}  }" TEXT_START_ADDR="SEGMENT_START(\"text-segment\", ${TEXT_START_ADDR})"SHLIB_TEXT_START_ADDR="SEGMENT_START(\"text-segment\", ${SHLIB_TEXT_START_ADDR:-0})" # Don't bother with separate code segment when there are data sections# between .plt and .text.if test -z "$TINY_READONLY_SECTION"; then  case "$LD_FLAG" in    *ro*textonly*)      ALL_TEXT_BEFORE_RO=" "      SEPARATE_TEXT=" "      TEXT_SEGMENT_ALIGN=". = ALIGN(${MAXPAGESIZE});"      ;;    *textonly*)      SEPARATE_TEXT=" "      TEXT_SEGMENT_ALIGN=". = ALIGN(${MAXPAGESIZE});"      ;;  esacfi if [ -z "$SEPARATE_CODE" ]; then  SIZEOF_HEADERS_CODE=" + SIZEOF_HEADERS"else  SIZEOF_HEADERS_CODE=fi # If this is for an embedded system, don't add SIZEOF_HEADERS.if [ -z "$EMBEDDED" ]; then   test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR}${SIZEOF_HEADERS_CODE}"else   test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR}"fi # ===========================================================================# Functions for generating parts of the linker script # Helper function for putting comments into scripts.# Useful when trying to track down script composition problems.# Use by adding:#   emit_comment "a message"# wherever necessary. emit_comment(){cat <<EOF  /* $1 */EOF} align_to_default_symbol_alignment(){cat <<EOF  ${RELOCATING+. = ALIGN(${ALIGNMENT});}EOF} align_to_default_section_alignment(){cat <<EOF  ${RELOCATING+. = ALIGN(. != 0 ? ${ALIGNMENT} : 1);}EOF} emit_header(){cat <<EOF/* Copyright (C) 2014-2026 Free Software Foundation, Inc.    Copying and distribution of this script, with or without modification,   are permitted in any medium without royalty provided the copyright   notice and this notice are preserved.  */ OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}", "${LITTLE_OUTPUT_FORMAT}")OUTPUT_ARCH(${OUTPUT_ARCH})${RELOCATING+ENTRY(${ENTRY})} ${RELOCATING+${LIB_SEARCH_DIRS}}${RELOCATING+${CREATE_SHLIB-${EXECUTABLE_SYMBOLS}}}${RELOCATING+${INPUT_FILES}}${RELOCATING- /* For some reason, the Solaris linker makes bad executables  if gld -r is used and the intermediate file has sections starting  at non-zero addresses.  Could be a Solaris ld bug, could be a GNU ld  bug.  But for now assigning the zero vmas works.  */}EOF} emit_early_ro(){cat <<EOF  ${INITIAL_READONLY_SECTIONS}EOF} emit_noinit(){  if test "${HAVE_NOINIT}" != "yes"; then    return  ficat <<EOF    /* This section contains data that is not initialized during load,     or during the application's initialization sequence.  */  .noinit ${RELOCATING-0} (NOLOAD) : ${RELOCATING+ALIGN(${ALIGNMENT})}  {    ${RELOCATING+PROVIDE (__noinit_start = .);}    *(.noinit${RELOCATING+ .noinit.* .gnu.linkonce.n.*})    $(align_to_default_symbol_alignment)    ${RELOCATING+PROVIDE (__noinit_end = .);}  }EOF} emit_persistent(){  if test "${HAVE_PERSISTENT}" != "yes"; then    return  ficat <<EOF      /* This section contains data that is initialized during load,     but not during the application's initialization sequence.  */  .persistent ${RELOCATING-0} : ${RELOCATING+ALIGN(${ALIGNMENT})}  {    ${RELOCATING+PROVIDE (__persistent_start = .);}    *(.persistent${RELOCATING+ .persistent.* .gnu.linkonce.p.*})    $(align_to_default_symbol_alignment)    ${RELOCATING+PROVIDE (__persistent_end = .);}  }EOF} emit_executable_start(){cat <<EOF  ${RELOCATING+${SEPARATE_TEXT-/* Read-only sections, merged into text segment: */}}   ${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+PROVIDE (__executable_start = ${TEXT_START_ADDR});  . = ${TEXT_BASE_ADDRESS};}}}   ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR}${SIZEOF_HEADERS_CODE};}}   ${CREATE_PIE+${RELOCATING+PROVIDE (__executable_start = ${SHLIB_TEXT_START_ADDR});  . = ${SHLIB_TEXT_START_ADDR}${SIZEOF_HEADERS_CODE};}}   /* Place the build-id as close to the ELF headers as possible.  This     maximises the chance the build-id will be present in core files,     which GDB can then use to locate the associated debuginfo file.  */  .note.gnu.build-id ${RELOCATING-0}: { *(.note.gnu.build-id) }EOF

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