| # Copyright (C) 2014-2021 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 0) |
| # DATA_ADDR - if end-of-text-plus-one-page isn't right for data start |
| # INITIAL_READONLY_SECTIONS - at start of data segment |
| # OTHER_READONLY_SECTIONS - other than .text .init .rodata ... |
| # (e.g., .PARISC.milli) |
| # OTHER_TEXT_SECTIONS - these get put in .text when relocating |
| # OTHER_READWRITE_SECTIONS - other than .data .bss .ctors .sdata ... |
| # (e.g., .PARISC.global) |
| # OTHER_SECTIONS - at the end |
| # EXECUTABLE_SYMBOLS - symbols that must be defined for an |
| # executable (e.g., _DYNAMIC_LINK) |
| # 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. |
| # OTHER_GOT_SYMBOLS - symbols defined just before .got. |
| # OTHER_GOT_SECTIONS - sections just after .got. |
| # OTHER_SDATA_SECTIONS - sections just after .sdata. |
| # OTHER_BSS_SYMBOLS - symbols that appear at the start of the |
| # .bss section besides __bss_start. |
| # DATA_PLT - .plt should be in data segment, not text segment. |
| # BSS_PLT - .plt should be in bss 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. |
| # |
| # 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 |
| # |
| # Each of these can also have corresponding .rel.* and .rela.* sections. |
| |
| test -z "$ENTRY" && ENTRY=_start |
| test -z "${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}:${MACHINE}; fi |
| test -z "${ELFSIZE}" && ELFSIZE=32 |
| test -z "${ALIGNMENT}" && ALIGNMENT="${ELFSIZE} / 8" |
| test "$LD_FLAG" = "N" && DATA_ADDR=. |
| INTERP=".interp ${RELOCATING-0} : { *(.interp) }" |
| PLT=".plt ${RELOCATING-0} : { *(.plt) }" |
| DYNAMIC=".dynamic ${RELOCATING-0} : { *(.dynamic) }" |
| RODATA=".rodata ${RELOCATING-0} : { *(.rodata) ${RELOCATING+*(.rodata.*)} ${RELOCATING+*(.gnu.linkonce.r.*)} }" |
| SBSS2=".sbss2 ${RELOCATING-0} : { *(.sbss2) ${RELOCATING+*(.sbss2.*)} ${RELOCATING+*(.gnu.linkonce.sb2.*)} }" |
| SDATA2=".sdata2 ${RELOCATING-0} : { *(.sdata2) ${RELOCATING+*(.sdata2.*)} ${RELOCATING+*(.gnu.linkonce.s2.*)} }" |
| CTOR=".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}} |
| }" |
| |
| # If this is for an embedded system, don't add SIZEOF_HEADERS. |
| if [ -z "$EMBEDDED" ]; then |
| test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR} + SIZEOF_HEADERS" |
| else |
| test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR}" |
| fi |
| |
| cat <<EOF |
| /* Copyright (C) 2014-2021 Free Software Foundation, Inc. |
| |
| Copying and distribution of this script, with or without modification, |
| are permitted in any medium without royalty provided the copyright |
| notice and this notice are preserved. */ |
| |
| OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}", |
| "${LITTLE_OUTPUT_FORMAT}") |
| OUTPUT_ARCH(${OUTPUT_ARCH}) |
| ${RELOCATING+ENTRY(${ENTRY})} |
| |
| ${RELOCATING+${LIB_SEARCH_DIRS}} |
| ${RELOCATING+/* Do we need any of these for elf? |
| __DYNAMIC = 0; ${STACKZERO+${STACKZERO}} ${SHLIB_PATH+${SHLIB_PATH}} */} |
| ${RELOCATING+${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. */} |
| |
| SECTIONS |
| { |
| ${CREATE_SHLIB-${RELOCATING+. = ${TEXT_BASE_ADDRESS};}} |
| ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR:-0} + SIZEOF_HEADERS;}} |
| ${CREATE_SHLIB-${INTERP}} |
| ${TEXT_DYNAMIC+${DYNAMIC}} |
| |
| EOF |
| if [ "x$COMBRELOC" = x ]; then |
| COMBRELOCCAT=cat |
| else |
| COMBRELOCCAT="cat > $COMBRELOC" |
| fi |
| eval $COMBRELOCCAT <<EOF |
| .rel.init ${RELOCATING-0} : { *(.rel.init) } |
| .rela.init ${RELOCATING-0} : { *(.rela.init) } |
| .rel.text ${RELOCATING-0} : |
| { |
| *(.rel.text) |
| ${RELOCATING+*(.rel.text.*)} |
| ${RELOCATING+*(.rel.gnu.linkonce.t.*)} |
| } |
| .rela.text ${RELOCATING-0} : |
| { |
| *(.rela.text) |
| ${RELOCATING+*(.rela.text.*)} |
| ${RELOCATING+*(.rela.gnu.linkonce.t.*)} |
| } |
| .rel.fini ${RELOCATING-0} : { *(.rel.fini) } |
| .rela.fini ${RELOCATING-0} : { *(.rela.fini) } |
| .rel.rodata ${RELOCATING-0} : |
| { |
| *(.rel.rodata) |
| ${RELOCATING+*(.rel.rodata.*)} |
| ${RELOCATING+*(.rel.gnu.linkonce.r.*)} |
| } |
| .rela.rodata ${RELOCATING-0} : |
| { |
| *(.rela.rodata) |
| ${RELOCATING+*(.rela.rodata.*)} |
| ${RELOCATING+*(.rela.gnu.linkonce.r.*)} |
| } |
| ${OTHER_READONLY_RELOC_SECTIONS} |
| .rel.data ${RELOCATING-0} : |
| { |
| *(.rel.data) |
| ${RELOCATING+*(.rel.data.*)} |
| ${RELOCATING+*(.rel.gnu.linkonce.d.*)} |
| } |
| .rela.data ${RELOCATING-0} : |
| { |
| *(.rela.data) |
| ${RELOCATING+*(.rela.data.*)} |
| ${RELOCATING+*(.rela.gnu.linkonce.d.*)} |
| } |
| .rel.ctors ${RELOCATING-0} : { *(.rel.ctors) } |
| .rela.ctors ${RELOCATING-0} : { *(.rela.ctors) } |
| .rel.dtors ${RELOCATING-0} : { *(.rel.dtors) } |
| .rela.dtors ${RELOCATING-0} : { *(.rela.dtors) } |
| .rel.got ${RELOCATING-0} : { *(.rel.got) } |
| .rela.got ${RELOCATING-0} : { *(.rela.got) } |
| ${OTHER_GOT_RELOC_SECTIONS} |
| .rel.sdata ${RELOCATING-0} : |
| { |
| *(.rel.sdata) |
| ${RELOCATING+*(.rel.sdata.*)} |
| ${RELOCATING+*(.rel.gnu.linkonce.s.*)} |
| } |
| .rela.sdata ${RELOCATING-0} : |
| { |
| *(.rela.sdata) |
| ${RELOCATING+*(.rela.sdata.*)} |
| ${RELOCATING+*(.rela.gnu.linkonce.s.*)} |
| } |
| .rel.sbss ${RELOCATING-0} : |
| { |
| *(.rel.sbss) |
| ${RELOCATING+*(.rel.sbss.*)} |
| ${RELOCATING+*(.rel.gnu.linkonce.sb.*)} |
| } |
| .rela.sbss ${RELOCATING-0} : |
| { |
| *(.rela.sbss) |
| ${RELOCATING+*(.rela.sbss.*)} |
| ${RELOCATING+*(.rela.gnu.linkonce.sb.*)} |
| } |
| .rel.sdata2 ${RELOCATING-0} : |
| { |
| *(.rel.sdata2) |
| ${RELOCATING+*(.rel.sdata2.*)} |
| ${RELOCATING+*(.rel.gnu.linkonce.s2.*)} |
| } |
| .rela.sdata2 ${RELOCATING-0} : |
| { |
| *(.rela.sdata2) |
| ${RELOCATING+*(.rela.sdata2.*)} |
| ${RELOCATING+*(.rela.gnu.linkonce.s2.*)} |
| } |
| .rel.sbss2 ${RELOCATING-0} : |
| { |
| *(.rel.sbss2) |
| ${RELOCATING+*(.rel.sbss2.*)} |
| ${RELOCATING+*(.rel.gnu.linkonce.sb2.*)} |
| } |
| .rela.sbss2 ${RELOCATING-0} : |
| { |
| *(.rela.sbss2) |
| ${RELOCATING+*(.rela.sbss2.*)} |
| ${RELOCATING+*(.rela.gnu.linkonce.sb2.*)} |
| } |
| .rel.bss ${RELOCATING-0} : |
| { |
| *(.rel.bss) |
| ${RELOCATING+*(.rel.bss.*)} |
| ${RELOCATING+*(.rel.gnu.linkonce.b.*)} |
| } |
| .rela.bss ${RELOCATING-0} : |
| { |
| *(.rela.bss) |
| ${RELOCATING+*(.rela.bss.*)} |
| ${RELOCATING+*(.rela.gnu.linkonce.b.*)} |
| } |
| EOF |
| if [ -n "$COMBRELOC" ]; then |
| cat <<EOF |
| .rel.dyn : |
| { |
| EOF |
| sed -e '/^[ ]*[{}][ ]*$/d;/:[ ]*$/d;/\.rela\./d;s/^.*: { *\(.*\)}$/ \1/' $COMBRELOC |
| cat <<EOF |
| } |
| .rela.dyn : |
| { |
| EOF |
| sed -e '/^[ ]*[{}][ ]*$/d;/:[ ]*$/d;/\.rel\./d;s/^.*: { *\(.*\)}/ \1/' $COMBRELOC |
| cat <<EOF |
| } |
| EOF |
| fi |
| cat <<EOF |
| .rel.plt ${RELOCATING-0} : { *(.rel.plt) } |
| .rela.plt ${RELOCATING-0} : { *(.rela.plt) } |
| ${OTHER_PLT_RELOC_SECTIONS} |
| |
| .init ${RELOCATING-0} : |
| { |
| ${RELOCATING+${INIT_START}} |
| KEEP (*(SORT_NONE(.init))) |
| ${RELOCATING+${INIT_END}} |
| } =${NOP-0} |
| |
| ${DATA_PLT-${BSS_PLT-${PLT}}} |
| .text ${RELOCATING-0} : |
| { |
| ${RELOCATING+${TEXT_START_SYMBOLS}} |
| *(.text) |
| ${RELOCATING+*(.text.*)} |
| *(.stub) |
| /* .gnu.warning sections are handled specially by elf.em. */ |
| *(.gnu.warning) |
| ${RELOCATING+*(.gnu.linkonce.t.*)} |
| ${RELOCATING+${OTHER_TEXT_SECTIONS}} |
| } =${NOP-0} |
| .fini ${RELOCATING-0} : |
| { |
| ${RELOCATING+${FINI_START}} |
| KEEP (*(SORT_NONE(.fini))) |
| ${RELOCATING+${FINI_END}} |
| } =${NOP-0} |
| ${RELOCATING+PROVIDE (__etext = .);} |
| ${RELOCATING+PROVIDE (_etext = .);} |
| ${RELOCATING+PROVIDE (etext = .);} |
| |
| /* Adjust the address for the data segment. We want to adjust up to |
| the same address within the page on the next page up. */ |
| ${CREATE_SHLIB-${RELOCATING+. = ${DATA_ADDR-ALIGN(${MAXPAGESIZE}) + (. & (${MAXPAGESIZE} - 1))};}} |
| ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_DATA_ADDR-ALIGN(${MAXPAGESIZE}) + (. & (${MAXPAGESIZE} - 1))};}} |
| |
| .data ${RELOCATING-0} : |
| { |
| ${RELOCATING+${DATA_START_SYMBOLS}} |
| *(.data) |
| ${RELOCATING+*(.data.*)} |
| ${RELOCATING+*(.gnu.linkonce.d.*)} |
| ${CONSTRUCTING+SORT(CONSTRUCTORS)} |
| } |
| .data1 ${RELOCATING-0} : { *(.data1) } |
| .eh_frame ${RELOCATING-0} : |
| { |
| ${RELOCATING+PROVIDE (__eh_frame_begin = .);} |
| *(.eh_frame) |
| ${RELOCATING+LONG (0);} |
| ${RELOCATING+PROVIDE (__eh_frame_end = .);} |
| } |
| .gcc_except_table : { *(.gcc_except_table) } |
| ${INITIAL_READONLY_SECTIONS} |
| .hash ${RELOCATING-0} : { *(.hash) } |
| .dynsym ${RELOCATING-0} : { *(.dynsym) } |
| .dynstr ${RELOCATING-0} : { *(.dynstr) } |
| .gnu.version ${RELOCATING-0} : { *(.gnu.version) } |
| .gnu.version_d ${RELOCATING-0} : { *(.gnu.version_d) } |
| .gnu.version_r ${RELOCATING-0} : { *(.gnu.version_r) } |
| ${RODATA} |
| .rodata1 ${RELOCATING-0} : { *(.rodata1) } |
| ${CREATE_SHLIB-${SDATA2}} |
| ${CREATE_SHLIB-${SBSS2}} |
| ${RELOCATING+${OTHER_READONLY_SECTIONS}} |
| ${RELOCATING+${OTHER_READWRITE_SECTIONS}} |
| ${TEXT_DYNAMIC-${DYNAMIC}} |
| ${RELOCATING+${CTOR}} |
| ${RELOCATING+${DTOR}} |
| .jcr : { KEEP (*(.jcr)) } |
| ${DATA_PLT+${PLT}} |
| ${RELOCATING+${OTHER_GOT_SYMBOLS}} |
| .got ${RELOCATING-0} : {${RELOCATING+ *(.got.plt)} *(.got) } |
| ${RELOCATING+${OTHER_GOT_SECTIONS}} |
| ${CREATE_SHLIB+${SDATA2}} |
| ${CREATE_SHLIB+${SBSS2}} |
| /* 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 ${RELOCATING-0} : |
| { |
| ${RELOCATING+${SDATA_START_SYMBOLS}} |
| *(.sdata) |
| ${RELOCATING+*(.sdata.*)} |
| ${RELOCATING+*(.gnu.linkonce.s.*)} |
| } |
| ${RELOCATING+${OTHER_SDATA_SECTIONS}} |
| ${RELOCATING+_edata = .;} |
| ${RELOCATING+PROVIDE (edata = .);} |
| ${RELOCATING+__bss_start = .;} |
| ${RELOCATING+${OTHER_BSS_SYMBOLS}} |
| .sbss ${RELOCATING-0} : |
| { |
| ${RELOCATING+PROVIDE (__sbss_start = .);} |
| ${RELOCATING+PROVIDE (___sbss_start = .);} |
| ${RELOCATING+*(.dynsbss)} |
| *(.sbss) |
| ${RELOCATING+*(.sbss.*)} |
| ${RELOCATING+*(.gnu.linkonce.sb.*)} |
| ${RELOCATING+*(.scommon)} |
| ${RELOCATING+PROVIDE (__sbss_end = .);} |
| ${RELOCATING+PROVIDE (___sbss_end = .);} |
| } |
| ${BSS_PLT+${PLT}} |
| .bss ${RELOCATING-0} : |
| { |
| ${RELOCATING+*(.dynbss)} |
| *(.bss) |
| ${RELOCATING+*(.bss.*)} |
| ${RELOCATING+*(.gnu.linkonce.b.*)} |
| ${RELOCATING+*(COMMON) |
| /* Align here to ensure that the .bss section occupies space up to |
| _end. Align after .bss to ensure correct alignment even if the |
| .bss section disappears because there are no input sections. */ |
| . = ALIGN(${ALIGNMENT});} |
| } |
| ${RELOCATING+${OTHER_BSS_END_SYMBOLS}} |
| ${RELOCATING+. = ALIGN(${ALIGNMENT});} |
| ${RELOCATING+${OTHER_END_SYMBOLS}} |
| ${RELOCATING+_end = .;} |
| ${RELOCATING+PROVIDE (end = .);} |
| |
| /* Stabs debugging sections. */ |
| .stab 0 : { *(.stab) } |
| .stabstr 0 : { *(.stabstr) } |
| .stab.excl 0 : { *(.stab.excl) } |
| .stab.exclstr 0 : { *(.stab.exclstr) } |
| .stab.index 0 : { *(.stab.index) } |
| .stab.indexstr 0 : { *(.stab.indexstr) } |
| |
| .comment 0 : { *(.comment) } |
| |
| EOF |
| |
| . $srcdir/scripttempl/DWARF.sc |
| |
| cat <<EOF |
| ${RELOCATING+${OTHER_RELOCATING_SECTIONS}} |
| |
| /* These must appear regardless of ${RELOCATING}. */ |
| ${OTHER_SECTIONS} |
| } |
| EOF |
