168 lines
6.7 KiB
Scala
168 lines
6.7 KiB
Scala
#
|
|
# 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.
|
|
#
|
|
# 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
|
|
|
|
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_START_ADDR} + SIZEOF_HEADERS;}}
|
|
${CREATE_SHLIB+${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
|