289 lines
10 KiB
Python
289 lines
10 KiB
Python
|
#
|
||
|
|
# 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
|