| # |
| # Unusual variables checked by this code: |
| # NOP - four byte opcode for no-op (defaults to 0) |
| # NO_SMALL_DATA - no .sbss/.sbss2/.sdata/.sdata2 sections if not |
| # empty. |
| # OTHER_READONLY_SECTIONS - other than .text .init .rodata ... |
| # (e.g., .PARISC.milli) |
| # When adding sections, do note that the names of some sections are used |
| # when specifying the start address of the next. |
| # |
| test -z "$ENTRY" && ENTRY=start |
| test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT} |
| test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT} |
| # If we request a big endian toolchain, give a big endian linker |
| test -z "$GOT" && GOT=".got ${RELOCATING-0} : { *(.got.plt) *(.got) } ${RELOCATING+ > ${DATA_MEMORY}}" |
| test "${ARC_ENDIAN}" == "big" && OUTPUT_FORMAT=${BIG_OUTPUT_FORMAT} |
| if [ -z "$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=. |
| |
| 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)) |
| |
| /* We don't want to include the .ctor section from |
| 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 $OTHER_EXCLUDE_FILES) .ctors)) |
| KEEP (*(SORT(.ctors.*))) |
| KEEP (*(.ctors)) |
| ${CONSTRUCTING+${CTOR_END}} |
| } ${RELOCATING+ > ${DATA_MEMORY}}" |
| DTOR=".dtors ${CONSTRUCTING-0} : |
| { |
| ${CONSTRUCTING+${DTOR_START}} |
| KEEP (*crtbegin*.o(.dtors)) |
| KEEP (*(EXCLUDE_FILE (*crtend*.o $OTHER_EXCLUDE_FILES) .dtors)) |
| KEEP (*(SORT(.dtors.*))) |
| KEEP (*(.dtors)) |
| ${CONSTRUCTING+${DTOR_END}} |
| } ${RELOCATING+ > ${DATA_MEMORY}}" |
| |
| if test -z "${NO_SMALL_DATA}"; then |
| SBSS=".sbss ${RELOCATING-0} : |
| { |
| ${RELOCATING+PROVIDE (__sbss_start = .);} |
| ${RELOCATING+PROVIDE (___sbss_start = .);} |
| *(.dynsbss) |
| *(.sbss${RELOCATING+ .sbss.* .gnu.linkonce.sb.*}) |
| *(.scommon) |
| ${RELOCATING+PROVIDE (__sbss_end = .);} |
| ${RELOCATING+PROVIDE (___sbss_end = .);} |
| } ${RELOCATING+ > ${SDATA_MEMORY}}" |
| SBSS2=".sbss2 ${RELOCATING-0} : { *(.sbss2${RELOCATING+ .sbss2.* .gnu.linkonce.sb2.*}) } ${RELOCATING+ > ${SDATA_MEMORY}}" |
| 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 ${RELOCATING-0} : |
| { |
| ${RELOCATING+${SDATA_START_SYMBOLS}} |
| *(.sdata${RELOCATING+ .sdata.* .gnu.linkonce.s.*}) |
| |
| ${RELOCATING+_edata = .;} |
| ${RELOCATING+PROVIDE (edata = .);} |
| } ${RELOCATING+ > ${SDATA_MEMORY}}" |
| SDATA2=".sdata2 ${RELOCATING-0} : { *(.sdata2${RELOCATING+ .sdata2.* .gnu.linkonce.s2.*}) } ${RELOCATING+ > ${SDATA_MEMORY}}" |
| REL_SDATA=".rel.sdata ${RELOCATING-0} : { *(.rel.sdata${RELOCATING+ .rel.sdata.* .rel.gnu.linkonce.s.*}) } |
| .rela.sdata ${RELOCATING-0} : { *(.rela.sdata${RELOCATING+ .rela.sdata.* .rela.gnu.linkonce.s.*}) }" |
| REL_SBSS=".rel.sbss ${RELOCATING-0} : { *(.rel.sbss${RELOCATING+ .rel.sbss.* .rel.gnu.linkonce.sb.*}) } |
| .rela.sbss ${RELOCATING-0} : { *(.rela.sbss${RELOCATING+ .rela.sbss.* .rela.gnu.linkonce.sb.*}) }" |
| REL_SDATA2=".rel.sdata2 ${RELOCATING-0} : { *(.rel.sdata2${RELOCATING+ .rel.sdata2.* .rel.gnu.linkonce.s2.*}) } |
| .rela.sdata2 ${RELOCATING-0} : { *(.rela.sdata2${RELOCATING+ .rela.sdata2.* .rela.gnu.linkonce.s2.*}) }" |
| REL_SBSS2=".rel.sbss2 ${RELOCATING-0} : { *(.rel.sbss2${RELOCATING+ .rel.sbss2.* .rel.gnu.linkonce.sb2.*}) } |
| .rela.sbss2 ${RELOCATING-0} : { *(.rela.sbss2${RELOCATING+ .rela.sbss2.* .rela.gnu.linkonce.sb2.*}) }" |
| fi |
| |
| # |
| # We provide two emulations: a fixed on that defines some memory banks |
| # and a configurable one that includes a user provided memory definition. |
| # |
| case $GENERIC_BOARD in |
| yes|1|YES) |
| MEMORY_DEF=" |
| /* Get memory banks definition from some user configuration file. |
| This file must be located in some linker directory (search path |
| with -L<dir>). See fixed memory banks emulation script. */ |
| INCLUDE memory.x; |
| " |
| ;; |
| *) |
| MEMORY_DEF=" |
| /* Fixed definition of the available memory banks. |
| See generic emulation script for a user defined configuration. */ |
| MEMORY |
| { |
| ICCM : ORIGIN = 0x00000000, LENGTH = ${ICCM_SIZE} |
| DCCM : ORIGIN = ${RAM_START_ADDR}, LENGTH = ${RAM_SIZE} |
| } |
| |
| /* Setup the stack on the top of the data memory bank. */ |
| PROVIDE (__stack_top = (${RAM_START_ADDR} + ${RAM_SIZE} - 1) & -4); |
| PROVIDE (__end_heap = ${RAM_START_ADDR} + ${RAM_SIZE} - 1); |
| " |
| ;; |
| esac |
| |
| cat <<EOF |
| OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}", "${LITTLE_OUTPUT_FORMAT}") |
| OUTPUT_ARCH(${OUTPUT_ARCH}) |
| ${RELOCATING+ENTRY(${ENTRY})} |
| |
| ${RELOCATING+${LIB_SEARCH_DIRS}} |
| ${RELOCATING+${EXECUTABLE_SYMBOLS}} |
| ${RELOCATING+${MEMORY_DEF}} |
| |
| SECTIONS |
| { |
| .ivt 0x00 : |
| { |
| KEEP (*(.ivt)); |
| } ${RELOCATING+ > ${STARTUP_MEMORY}} |
| |
| .startup 0x100: |
| { |
| KEEP (*crt0.o(.text.__startup)) |
| } ${RELOCATING+ > ${STARTUP_MEMORY}} |
| |
| /* Read-only sections, merged into text segment: */ |
| ${TEXT_DYNAMIC+${DYNAMIC}} |
| .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) } |
| |
| .rel.init ${RELOCATING-0} : { *(.rel.init) } |
| .rela.init ${RELOCATING-0} : { *(.rela.init) } |
| .rel.text ${RELOCATING-0} : { *(.rel.text${RELOCATING+ .rel.text.* .rel.gnu.linkonce.t.*}) } |
| .rela.text ${RELOCATING-0} : { *(.rela.text${RELOCATING+ .rela.text.* .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.* .rel.gnu.linkonce.r.*}) } |
| .rela.rodata ${RELOCATING-0} : { *(.rela.rodata${RELOCATING+ .rela.rodata.* .rela.gnu.linkonce.r.*}) } |
| .rel.data ${RELOCATING-0} : { *(.rel.data${RELOCATING+ .rel.data.* .rel.gnu.linkonce.d.*}) } |
| .rela.data ${RELOCATING-0} : { *(.rela.data${RELOCATING+ .rela.data.* .rela.gnu.linkonce.d.*}) } |
| .rel.tdata ${RELOCATING-0} : { *(.rel.tdata${RELOCATING+ .rel.tdata.* .rel.gnu.linkonce.td.*}) } |
| .rela.tdata ${RELOCATING-0} : { *(.rela.tdata${RELOCATING+ .rela.tdata.* .rela.gnu.linkonce.td.*}) } |
| .rel.tbss ${RELOCATING-0} : { *(.rel.tbss${RELOCATING+ .rel.tbss.* .rel.gnu.linkonce.tb.*}) } |
| .rela.tbss ${RELOCATING-0} : { *(.rela.tbss${RELOCATING+ .rela.tbss.* .rela.gnu.linkonce.tb.*}) } |
| .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) } |
| ${REL_SDATA} |
| ${REL_SBSS} |
| ${REL_SDATA2} |
| ${REL_SBSS2} |
| .rel.bss ${RELOCATING-0} : { *(.rel.bss${RELOCATING+ .rel.bss.* .rel.gnu.linkonce.b.*}) } |
| .rela.bss ${RELOCATING-0} : { *(.rela.bss${RELOCATING+ .rela.bss.* .rela.gnu.linkonce.b.*}) } |
| |
| .jcr : { KEEP (*(.jcr)) } ${RELOCATING+> ${TEXT_MEMORY}} |
| .eh_frame : { KEEP (*(.eh_frame)) } ${RELOCATING+> ${TEXT_MEMORY}} |
| .gcc_except_table : { *(.gcc_except_table) *(.gcc_except_table.*) } ${RELOCATING+> ${TEXT_MEMORY}} |
| .plt : { *(.plt) } ${RELOCATING+> ${TEXT_MEMORY}} |
| |
| .rodata ${RELOCATING-0} : |
| { |
| *(.rodata) ${RELOCATING+*(.rodata.*)} ${RELOCATING+*(.gnu.linkonce.r.*)} |
| } ${RELOCATING+> ${TEXT_MEMORY}} |
| |
| .rodata1 ${RELOCATING-0} : { *(.rodata1) } ${RELOCATING+> ${TEXT_MEMORY}} |
| |
| .init ${RELOCATING-0} : |
| { |
| ${RELOCATING+${INIT_START}} |
| KEEP (*(.init)) |
| ${RELOCATING+${INIT_END}} |
| } ${RELOCATING+ > ${TEXT_MEMORY}} =${NOP-0} |
| |
| .text ${RELOCATING-0} : |
| { |
| ${RELOCATING+${TEXT_START_SYMBOLS}} |
| |
| *(.text .stub${RELOCATING+ .text.* .gnu.linkonce.t.*}) |
| /* .gnu.warning sections are handled specially by elf32.em. */ |
| *(.gnu.warning) |
| |
| ${RELOCATING+${OTHER_TEXT_SECTIONS}} |
| |
| } ${RELOCATING+ > ${TEXT_MEMORY}} =${NOP-0} |
| |
| .fini ${RELOCATING-0} : |
| { |
| ${RELOCATING+${FINI_START}} |
| KEEP (*(.fini)) |
| ${RELOCATING+${FINI_END}} |
| |
| ${RELOCATING+PROVIDE (__etext = .);} |
| ${RELOCATING+PROVIDE (_etext = .);} |
| ${RELOCATING+PROVIDE (etext = .);} |
| } ${RELOCATING+ > ${TEXT_MEMORY}} =${NOP-0} |
| |
| ${RELOCATING+${OTHER_READONLY_SECTIONS}} |
| |
| /* Start of the data section image in ROM. */ |
| ${RELOCATING+__data_image = .;} |
| ${RELOCATING+PROVIDE (__data_image = .);} |
| |
| .data ${RELOCATING-0} : |
| { |
| ${RELOCATING+ PROVIDE (__data_start = .) ; } |
| /* --gc-sections will delete empty .data. This leads to wrong start |
| addresses for subsequent sections because -Tdata= from the command |
| line will have no effect, see PR13697. Thus, keep .data */ |
| KEEP (*(.data)) |
| ${RELOCATING+${DATA_START_SYMBOLS}} |
| *(.data${RELOCATING+ .data.* .gnu.linkonce.d.*}) |
| ${CONSTRUCTING+SORT(CONSTRUCTORS)} |
| |
| } ${RELOCATING+ > ${DATA_MEMORY}} |
| |
| ${GOT} |
| ${RELOCATING+${CTOR}} |
| ${RELOCATING+${DTOR}} |
| |
| ${RELOCATING+${SDATA}} |
| ${RELOCATING+${SDATA2}} |
| ${RELOCATING+${SBSS}} |
| ${RELOCATING+${SBSS2}} |
| .bss ${RELOCATING-0} : |
| { |
| *(.dynbss) |
| *(.bss${RELOCATING+ .bss.* .gnu.linkonce.b.*}) |
| *(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. */ |
| ${RELOCATING+. = ALIGN(${ALIGNMENT});} |
| ${RELOCATING+_end = .;} |
| ${RELOCATING+PROVIDE (end = .);} |
| } ${RELOCATING+ > ${DATA_MEMORY}} |
| |
| /* Global data not cleared after reset. */ |
| .noinit ${RELOCATING-0}: |
| { |
| *(.noinit*) |
| ${RELOCATING+. = ALIGN(${ALIGNMENT});} |
| ${RELOCATING+ PROVIDE (__start_heap = .) ; } |
| } ${RELOCATING+ > ${DATA_MEMORY}} |
| |
| |
| /* 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) } |
| |
| /* DWARF debug sections. |
| Symbols in the DWARF debugging sections are relative to the beginning |
| of the section so we begin them at 0. */ |
| |
| /* DWARF 1 */ |
| .debug 0 : { *(.debug) } |
| .line 0 : { *(.line) } |
| |
| /* GNU DWARF 1 extensions */ |
| .debug_srcinfo 0 : { *(.debug_srcinfo) } |
| .debug_sfnames 0 : { *(.debug_sfnames) } |
| |
| /* DWARF 1.1 and DWARF 2 */ |
| .debug_aranges 0 : { *(.debug_aranges) } |
| .debug_pubnames 0 : { *(.debug_pubnames) } |
| |
| /* DWARF 2 */ |
| .debug_info 0 : { *(.debug_info) *(.gnu.linkonce.wi.*) } |
| .debug_abbrev 0 : { *(.debug_abbrev) } |
| .debug_line 0 : { *(.debug_line) } |
| .debug_frame 0 : { *(.debug_frame) } |
| .debug_str 0 : { *(.debug_str) } |
| .debug_loc 0 : { *(.debug_loc) } |
| .debug_macinfo 0 : { *(.debug_macinfo) } |
| |
| /* DWARF 3 */ |
| .debug_pubtypes 0 : { *(.debug_pubtypes) } |
| .debug_ranges 0 : { *(.debug_ranges) } |
| |
| /* DWARF Extension. */ |
| .debug_macro 0 : { *(.debug_macro) } |
| |
| /* ARC Extension Sections */ |
| .arcextmap 0 : { *(.gnu.linkonce.arcextmap.*) } |
| } |
| EOF |
