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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.
# DATA_PLT - .plt should be in data segment, not text segment.
# 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.
#
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}:${MACHINE}; fi
test "$LD_FLAG" = "N" && DATA_ADDR=.
INTERP=".interp ${RELOCATING-0} : { *(.interp) }"
PLT=".plt ${RELOCATING-0} : { *(.plt) }"
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) .ctors))
KEEP (*(SORT(.ctors.*)))
KEEP (*(.ctors))
${CONSTRUCTING+${CTOR_END}}
}"
DTOR=" .dtors ${CONSTRUCTING-0} :
{
${CONSTRUCTING+${DTOR_START}}
KEEP (*crtbegin.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*(.dtors))
${CONSTRUCTING+${DTOR_END}}
}"
# if this is for an embedded system, don't add SIZEOF_HEADERS.
if [ -z "$EMBEDDED" ]; then
test -z "${READONLY_BASE_ADDRESS}" && READONLY_BASE_ADDRESS="${READONLY_START_ADDR} + SIZEOF_HEADERS"
else
test -z "${READONLY_BASE_ADDRESS}" && READONLY_BASE_ADDRESS="${READONLY_START_ADDR}"
fi
cat <<EOF
OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}",
"${LITTLE_OUTPUT_FORMAT}")
OUTPUT_ARCH(${OUTPUT_ARCH})
ENTRY(${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+. = ${READONLY_BASE_ADDRESS};}}
${CREATE_SHLIB+${RELOCATING+. = SIZEOF_HEADERS;}}
${CREATE_SHLIB-${INTERP}}
.hash ${RELOCATING-0} : { *(.hash) }
.dynsym ${RELOCATING-0} : { *(.dynsym) }
.dynstr ${RELOCATING-0} : { *(.dynstr) }
.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) }
${DATA_PLT-${PLT}}
.rodata ${RELOCATING-0} : { *(.rodata) *(.gnu.linkonce.r*) }
.rodata1 ${RELOCATING-0} : { *(.rodata1) }
${RELOCATING+${OTHER_READONLY_SECTIONS}}
/* Adjust the address for the data segment. */
${RELOCATING+. = ${DATA_ADDR-ALIGN(4);}}
.data ${RELOCATING-0} :
{
${RELOCATING+${DATA_START_SYMBOLS}}
*(.data)
*(.data.*)
*(.gnu.linkonce.d*)
${CONSTRUCTING+CONSTRUCTORS}
}
.data1 ${RELOCATING-0} : { *(.data1) }
${RELOCATING+${OTHER_READWRITE_SECTIONS}}
${RELOCATING+${CTOR}}
${RELOCATING+${DTOR}}
.got ${RELOCATING-0} : { *(.got.plt) *(.got) }
.dynamic ${RELOCATING-0} : { *(.dynamic) }
${DATA_PLT+${PLT}}
/* 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+_edata = .;}
${RELOCATING+PROVIDE (edata = .);}
${RELOCATING+__bss_start = .;}
${RELOCATING+${OTHER_BSS_SYMBOLS}}
.sbss ${RELOCATING-0} : { *(.sbss) *(.scommon) }
.bss ${RELOCATING-0} :
{
*(.dynbss)
*(.bss)
*(COMMON)
}
${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) }
/* 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) }
.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) }
/* SGI/MIPS DWARF 2 extensions */
.debug_weaknames 0 : { *(.debug_weaknames) }
.debug_funcnames 0 : { *(.debug_funcnames) }
.debug_typenames 0 : { *(.debug_typenames) }
.debug_varnames 0 : { *(.debug_varnames) }
${RELOCATING+${OTHER_RELOCATING_SECTIONS}}
/* These must appear regardless of ${RELOCATING}. */
${OTHER_SECTIONS}
/* Hmmm, there's got to be a better way. This sets the stack to the
top of the simulator memory (i.e. top of 64K data space). */
.stack 0x00007FFE : { _stack = .; *(.stack) }
.text ${RELOCATING+${TEXT_START_ADDR}} :
{
${RELOCATING+${TEXT_START_SYMBOLS}}
KEEP (*(.init))
KEEP (*(.fini))
*(.text)
*(.text.*)
/* .gnu.warning sections are handled specially by elf32.em. */
*(.gnu.warning)
*(.gnu.linkonce.t*)
} =${NOP-0}
${RELOCATING+_etext = .;}
${RELOCATING+PROVIDE (etext = .);}
}
EOF
|
