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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.
#
# 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=${OUTPUT_FORMAT}
test "$LD_FLAG" = "N" && DATA_ADDR=.
SBSS2=".sbss2 ${RELOCATING-0} : { *(.sbss2) }"
SDATA2=".sdata2 ${RELOCATING-0} : { *(.sdata2) }"
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}}
}"
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. */}
${RELOCATING+PROVIDE (__stack = 0);}
${RELOCATING+PROVIDE (___stack = 0);}
SECTIONS
{
/* Read-only sections, merged into text segment: */
${CREATE_SHLIB-${RELOCATING+. = ${TEXT_START_ADDR} + SIZEOF_HEADERS;}}
${CREATE_SHLIB+${RELOCATING+. = SIZEOF_HEADERS;}}
${CREATE_SHLIB-${INTERP}}
.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) }
.rela.text ${RELOCATING-0} :
{
*(.rela.text)
${RELOCATING+*(.rela.text.*)}
${RELOCATING+*(.rela.gnu.linkonce.t*)}
}
.rela.data ${RELOCATING-0} :
{
*(.rela.data)
${RELOCATING+*(.rela.data.*)}
${RELOCATING+*(.rela.gnu.linkonce.d*)}
}
.rela.rodata ${RELOCATING-0} :
{
*(.rela.rodata)
${RELOCATING+*(.rela.rodata.*)}
${RELOCATING+*(.rela.gnu.linkonce.r*)}
}
.rela.got ${RELOCATING-0} : { *(.rela.got) }
.rela.got1 ${RELOCATING-0} : { *(.rela.got1) }
.rela.got2 ${RELOCATING-0} : { *(.rela.got2) }
.rela.ctors ${RELOCATING-0} : { *(.rela.ctors) }
.rela.dtors ${RELOCATING-0} : { *(.rela.dtors) }
.rela.init ${RELOCATING-0} : { *(.rela.init) }
.rela.fini ${RELOCATING-0} : { *(.rela.fini) }
.rela.bss ${RELOCATING-0} : { *(.rela.bss) }
.rela.plt ${RELOCATING-0} : { *(.rela.plt) }
.rela.sdata ${RELOCATING-0} : { *(.rela.sdata) }
.rela.sbss ${RELOCATING-0} : { *(.rela.sbss) }
.rela.sdata2 ${RELOCATING-0} : { *(.rela.sdata2) }
.rela.sbss2 ${RELOCATING-0} : { *(.rela.sbss2) }
.text ${RELOCATING-0} :
{
${RELOCATING+${TEXT_START_SYMBOLS}}
*(.text)
${RELOCATING+*(.text.*)}
/* .gnu.warning sections are handled specially by elf32.em. */
*(.gnu.warning)
${RELOCATING+*(.gnu.linkonce.t*)}
} =${NOP-0}
.init ${RELOCATING-0} : { KEEP (*(.init)) } =${NOP-0}
.fini ${RELOCATING-0} : { KEEP (*(.fini)) } =${NOP-0}
.rodata ${RELOCATING-0} :
{
*(.rodata)
${RELOCATING+*(.rodata.*)}
${RELOCATING+*(.gnu.linkonce.r*)}
}
.rodata1 ${RELOCATING-0} : { *(.rodata1) }
${RELOCATING+_etext = .;}
${RELOCATING+PROVIDE (etext = .);}
${RELOCATING+PROVIDE (__etext = .);}
${CREATE_SHLIB-${SDATA2}}
${CREATE_SHLIB-${SBSS2}}
${RELOCATING+${OTHER_READONLY_SECTIONS}}
/* 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} - 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). */
${RELOCATING+. = ${DATA_ADDR- ALIGN(8) + ${MAXPAGESIZE}};}
.data ${RELOCATING-0} :
{
${RELOCATING+${DATA_START_SYMBOLS}}
*(.data)
${RELOCATING+*(.data.*)}
${RELOCATING+*(.gnu.linkonce.d*)}
${CONSTRUCTING+CONSTRUCTORS}
}
.data1 ${RELOCATING-0} : { *(.data1) }
${RELOCATING+${OTHER_READWRITE_SECTIONS}}
.got1 ${RELOCATING-0} : { *(.got1) }
.dynamic ${RELOCATING-0} : { *(.dynamic) }
/* Put .ctors and .dtors next to the .got2 section, so that the pointers
get relocated with -mrelocatable. Also put in the .fixup pointers.
The current compiler no longer needs this, but keep it around for 2.7.2 */
${RELOCATING+PROVIDE (_GOT2_START_ = .);}
${RELOCATING+PROVIDE (__GOT2_START_ = .);}
.got2 ${RELOCATING-0} : { *(.got2) }
${RELOCATING+PROVIDE (__CTOR_LIST__ = .);}
${RELOCATING+PROVIDE (___CTOR_LIST__ = .);}
${RELOCATING+${CTOR}}
${RELOCATING+PROVIDE (__CTOR_END__ = .);}
${RELOCATING+PROVIDE (___CTOR_END__ = .);}
${RELOCATING+PROVIDE (__DTOR_LIST__ = .);}
${RELOCATING+PROVIDE (___DTOR_LIST__ = .);}
${RELOCATING+${DTOR}}
${RELOCATING+PROVIDE (__DTOR_END__ = .);}
${RELOCATING+PROVIDE (___DTOR_END__ = .);}
${RELOCATING+PROVIDE (_FIXUP_START_ = .);}
${RELOCATING+PROVIDE (__FIXUP_START_ = .);}
.fixup ${RELOCATING-0} : { *(.fixup) }
${RELOCATING+PROVIDE (_FIXUP_END_ = .);}
${RELOCATING+PROVIDE (__FIXUP_END_ = .);}
${RELOCATING+PROVIDE (_GOT2_END_ = .);}
${RELOCATING+PROVIDE (__GOT2_END_ = .);}
${RELOCATING+PROVIDE (_GOT_START_ = .);}
${RELOCATING+PROVIDE (__GOT_START_ = .);}
.got ${RELOCATING-0} : { *(.got) }
.got.plt ${RELOCATING-0} : { *(.got.plt) }
${CREATE_SHLIB+${SDATA2}}
${CREATE_SHLIB+${SBSS2}}
${RELOCATING+PROVIDE (_GOT_END_ = .);}
${RELOCATING+PROVIDE (__GOT_END_ = .);}
/* 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+PROVIDE (__edata = .);}
.sbss ${RELOCATING-0} :
{
${RELOCATING+PROVIDE (__sbss_start = .);}
${RELOCATING+PROVIDE (___sbss_start = .);}
*(.sbss)
*(.scommon)
*(.dynsbss)
${RELOCATING+PROVIDE (__sbss_end = .);}
${RELOCATING+PROVIDE (___sbss_end = .);}
}
${PLT}
.bss ${RELOCATING-0} :
{
${RELOCATING+${OTHER_BSS_SYMBOLS}}
${RELOCATING+PROVIDE (__bss_start = .);}
${RELOCATING+PROVIDE (___bss_start = .);}
*(.dynbss)
*(.bss)
*(COMMON)
}
${RELOCATING+_end = . ;}
${RELOCATING+PROVIDE (end = .);}
${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 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) }
/* These must appear regardless of ${RELOCATING}. */
${OTHER_SECTIONS}
}
EOF
|
