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- #
- # Unusual variables checked by this code:
- # NOP - two byte opcode for no-op (defaults to 0)
- # DATA_ADDR - if end-of-text-plus-one-page isn't right for data start
- # OTHER_READONLY_SECTIONS - other than .text .init .rodata ...
- # (e.g., .PARISC.milli)
- # 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_BSS_SYMBOLS - symbols that appear at the start of the
- # .bss section besides __bss_start.
- # EMBEDDED - whether this is for an embedded system.
- #
- # When adding sections, do note that the names of some sections are used
- # when specifying the start address of the next.
- #
-
- # We use a start address of __start for Irix 5, _start for other
- # targets. This is for compatibility with Irix 5, and with old MIPS
- # ELF toolchains.
- if [ -z "$ENTRY" ]; then
- case "${target}" in
- mips*-*-irix5*) ENTRY=__start ;;
- *) ENTRY=_start ;;
- esac
- 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="${TEXT_START_ADDR} + SIZEOF_HEADERS"
- else
- test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR}"
- fi
-
- test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}
- test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}
- test "$LD_FLAG" = "N" && DATA_ADDR=.
- INTERP=".interp ${RELOCATING-0} : { *(.interp) }"
- cat <<EOF
- OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}",
- "${LITTLE_OUTPUT_FORMAT}")
- OUTPUT_ARCH(${ARCH})
- ENTRY(${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- /* 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
- {
- /* Read-only sections, merged into text segment: */
- ${CREATE_SHLIB-${RELOCATING+. = ${TEXT_BASE_ADDRESS};}}
- ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR} + SIZEOF_HEADERS;}}
- ${CREATE_SHLIB-${INTERP}}
- .reginfo ${RELOCATING-0} : { *(.reginfo) }
- .dynamic ${RELOCATING-0} : { *(.dynamic) }
- .dynstr ${RELOCATING-0} : { *(.dynstr) }
- .dynsym ${RELOCATING-0} : { *(.dynsym) }
- .hash ${RELOCATING-0} : { *(.hash) }
- .rel.text ${RELOCATING-0} : { *(.rel.text) }
- .rela.text ${RELOCATING-0} : { *(.rela.text) }
- .rel.data ${RELOCATING-0} : { *(.rel.data) }
- .rela.data ${RELOCATING-0} : { *(.rela.data) }
- .rel.rodata ${RELOCATING-0} : { *(.rel.rodata) }
- .rela.rodata ${RELOCATING-0} : { *(.rela.rodata) }
- .rel.got ${RELOCATING-0} : { *(.rel.got) }
- .rela.got ${RELOCATING-0} : { *(.rela.got) }
- .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.init ${RELOCATING-0} : { *(.rel.init) }
- .rela.init ${RELOCATING-0} : { *(.rela.init) }
- .rel.fini ${RELOCATING-0} : { *(.rel.fini) }
- .rela.fini ${RELOCATING-0} : { *(.rela.fini) }
- .rel.bss ${RELOCATING-0} : { *(.rel.bss) }
- .rela.bss ${RELOCATING-0} : { *(.rela.bss) }
- .rel.plt ${RELOCATING-0} : { *(.rel.plt) }
- .rela.plt ${RELOCATING-0} : { *(.rela.plt) }
- .rodata ${RELOCATING-0} : { *(.rodata) }
- .rodata1 ${RELOCATING-0} : { *(.rodata1) }
- .init ${RELOCATING-0} : { *(.init) } =${NOP-0}
- .text ${RELOCATING-0} :
- {
- ${CREATE_SHLIB-${RELOCATING+${TEXT_START_SYMBOLS}}}
- *(.text)
- *(.stub)
- /* .gnu.warning sections are handled specially by elf32.em. */
- *(.gnu.warning)
- } =${NOP-0}
- ${CREATE_SHLIB-${RELOCATING+_etext = .;}}
- ${CREATE_SHLIB-${RELOCATING+PROVIDE (etext = .);}}
- .fini ${RELOCATING-0} : { *(.fini) } =${NOP-0}
-
- /* Adjust the address for the data segment. We want to adjust up to
- the same address within the page on the next page up. It would
- be more correct to do this:
- ${RELOCATING+. = ${DATA_ADDR-ALIGN(${MAXPAGESIZE})
- + ((ALIGN(8) + ${MAXPAGESIZE} - ALIGN(${MAXPAGESIZE}))
- & (${MAXPAGESIZE} - 1)};}
- The current expression does not correctly handle the case of a
- text segment ending precisely at the end of a page; it causes the
- data segment to skip a page. The above expression does not have
- this problem, but it will currently (2/95) cause BFD to allocate
- a single segment, combining both text and data, for this case.
- This will prevent the text segment from being shared among
- multiple executions of the program; I think that is more
- important than losing a page of the virtual address space (note
- that no actual memory is lost; the page which is skipped can not
- be referenced). */
- ${CREATE_SHLIB-${RELOCATING+. += ${DATA_ADDR} - ${TEXT_START_ADDR};}}
- ${CREATE_SHLIB+${RELOCATING+. += 0x10000;}}
- .data ${RELOCATING-0} :
- {
- ${CREATE_SHLIB-${RELOCATING+${DATA_START_SYMBOLS}}}
- *(.data)
- ${CONSTRUCTING+CONSTRUCTORS}
- }
- .data1 ${RELOCATING-0} : { *(.data1) }
- .ctors ${RELOCATING-0} : { *(.ctors) }
- .dtors ${RELOCATING-0} : { *(.dtors) }
- ${RELOCATING+${OTHER_GOT_SYMBOLS}}
- .got ${RELOCATING-0} :
- {
- *(.got.plt) *(.got)
- }
- /* 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} : { *(.sdata) }
- ${RELOCATING+${OTHER_READWRITE_SECTIONS}}
- ${CREATE_SHLIB-${RELOCATING+_edata = .;}}
- ${CREATE_SHLIB-${RELOCATING+PROVIDE (edata = .);}}
- ${CREATE_SHLIB-${RELOCATING+__bss_start = .;}}
- ${CREATE_SHLIB-${RELOCATING+${OTHER_BSS_SYMBOLS}}}
- .sbss ${RELOCATING-0} : { *(.sbss) *(.scommon) }
- .bss ${RELOCATING-0} :
- {
- *(.dynbss)
- *(.bss)
- *(COMMON)
- }
- ${CREATE_SHLIB-${RELOCATING+_end = . ;}}
- ${CREATE_SHLIB-${RELOCATING+PROVIDE (end = .);}}
-
- /* These are needed for ELF backends which have not yet been
- converted to the new style linker. */
- .stab 0 : { *(.stab) }
- .stabstr 0 : { *(.stabstr) }
-
- /* DWARF debug sections.
- Symbols in the .debug DWARF section are relative to the beginning of the
- section so we begin .debug at 0. It's not clear yet what needs to happen
- for the others. */
- .debug 0 : { *(.debug) }
- .debug_srcinfo 0 : { *(.debug_srcinfo) }
- .debug_aranges 0 : { *(.debug_aranges) }
- .debug_pubnames 0 : { *(.debug_pubnames) }
- .debug_sfnames 0 : { *(.debug_sfnames) }
- .line 0 : { *(.line) }
-
- /* These must appear regardless of ${RELOCATING}. */
- ${OTHER_SECTIONS}
- }
- EOF
-