# NOP - four byte opcode for no-op (defaults to 0)
# NO_SMALL_DATA - no .sbss/.sbss2/.sdata/.sdata2 sections if not
# empty.
+# SMALL_DATA_CTOR - .ctors contains small data.
+# SMALL_DATA_DTOR - .dtors contains small data.
# DATA_ADDR - if end-of-text-plus-one-page isn't right for data start
# INITIAL_READONLY_SECTIONS - at start of text segment
# OTHER_READONLY_SECTIONS - other than .text .init .rodata ...
# OTHER_SECTIONS - at the end
# EXECUTABLE_SYMBOLS - symbols that must be defined for an
# executable (e.g., _DYNAMIC_LINK)
+# TEXT_START_ADDR - the first byte of the text segment, after any
+# headers.
+# TEXT_BASE_ADDRESS - the first byte of the text segment.
# 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.
+# DATA_END_SYMBOLS - symbols that appear at the end of the
+# writeable data sections.
# OTHER_GOT_SYMBOLS - symbols defined just before .got.
# OTHER_GOT_SECTIONS - sections just after .got.
# OTHER_SDATA_SECTIONS - sections just after .sdata.
# 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.
+# PLT_BEFORE_GOT - .plt just before .got when .plt is in data segement.
+# BSS_PLT - .plt should be in bss segment
# TEXT_DYNAMIC - .dynamic in text segment, not data segment.
# EMBEDDED - whether this is for an embedded system.
# SHLIB_TEXT_START_ADDR - if set, add to SIZEOF_HEADERS to set
# combination of .fini sections.
# STACK_ADDR - start of a .stack section.
# OTHER_END_SYMBOLS - symbols to place right at the end of the script.
+# ETEXT_NAME - name of a symbol for the end of the text section,
+# normally etext.
+# SEPARATE_GOTPLT - if set, .got.plt should be separate output section,
+# so that .got can be in the RELRO area. It should be set to
+# the number of bytes in the beginning of .got.plt which can be
+# in the RELRO area as well.
#
# When adding sections, do note that the names of some sections are used
# when specifying the start address of the next.
# Each of these can also have corresponding .rel.* and .rela.* sections.
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}:${MACHINE}; fi
test -z "${ELFSIZE}" && ELFSIZE=32
test -z "${ALIGNMENT}" && ALIGNMENT="${ELFSIZE} / 8"
test "$LD_FLAG" = "N" && DATA_ADDR=.
+test -z "${ETEXT_NAME}" && ETEXT_NAME=etext
test -n "$CREATE_SHLIB$CREATE_PIE" && test -n "$SHLIB_DATA_ADDR" && COMMONPAGESIZE=""
test -z "$CREATE_SHLIB$CREATE_PIE" && test -n "$DATA_ADDR" && COMMONPAGESIZE=""
+test -n "$RELRO_NOW" && unset SEPARATE_GOTPLT
DATA_SEGMENT_ALIGN="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))"
DATA_SEGMENT_RELRO_END=""
DATA_SEGMENT_END=""
if test -n "${COMMONPAGESIZE}"; then
DATA_SEGMENT_ALIGN="ALIGN (${SEGMENT_SIZE}) - ((${MAXPAGESIZE} - .) & (${MAXPAGESIZE} - 1)); . = DATA_SEGMENT_ALIGN (${MAXPAGESIZE}, ${COMMONPAGESIZE})"
DATA_SEGMENT_END=". = DATA_SEGMENT_END (.);"
- DATA_SEGMENT_RELRO_END=". = DATA_SEGMENT_RELRO_END (.);"
+ DATA_SEGMENT_RELRO_END=". = DATA_SEGMENT_RELRO_END (${SEPARATE_GOTPLT-0}, .);"
fi
INTERP=".interp ${RELOCATING-0} : { *(.interp) }"
+if test -z "$PLT"; then
+ PLT=".plt ${RELOCATING-0} : { *(.plt) }"
+fi
if test -z "$GOT"; then
+ if test -z "$SEPARATE_GOTPLT"; then
+ GOT=".got ${RELOCATING-0} : { *(.got.plt) *(.got) }"
+ else
GOT=".got ${RELOCATING-0} : { *(.got) }"
+ GOTPLT=".got.plt ${RELOCATING-0} : { *(.got.plt) }"
+ fi
fi
DYNAMIC=".dynamic ${RELOCATING-0} : { *(.dynamic) }"
RODATA=".rodata ${RELOCATING-0} : { *(.rodata${RELOCATING+ .rodata.* .gnu.linkonce.r.*}) }"
if test -z "${NO_SMALL_DATA}"; then
SBSS=".sbss ${RELOCATING-0} :
{
- ${RELOCATING+PROVIDE (__sbss_start = .);}
- ${RELOCATING+PROVIDE (___sbss_start = .);}
+ ${CREATE_SHLIB+*(.sbss2 .sbss2.* .gnu.linkonce.sb2.*)}
*(.dynsbss)
*(.sbss${RELOCATING+ .sbss.* .gnu.linkonce.sb.*})
*(.scommon)
- ${RELOCATING+PROVIDE (__sbss_end = .);}
- ${RELOCATING+PROVIDE (___sbss_end = .);}
}"
SBSS2=".sbss2 ${RELOCATING-0} : { *(.sbss2${RELOCATING+ .sbss2.* .gnu.linkonce.sb2.*}) }"
SDATA="/* We want the small data sections together, so single-instruction offsets
.sdata ${RELOCATING-0} :
{
${RELOCATING+${SDATA_START_SYMBOLS}}
+ ${CREATE_SHLIB+*(.sdata2 .sdata2.* .gnu.linkonce.s2.*)}
*(.sdata${RELOCATING+ .sdata.* .gnu.linkonce.s.*})
}"
SDATA2=".sdata2 ${RELOCATING-0} : { *(.sdata2${RELOCATING+ .sdata2.* .gnu.linkonce.s2.*}) }"
else
NO_SMALL_DATA=" "
fi
+if test -z "${DATA_GOT}"; then
+ if test -n "${NO_SMALL_DATA}"; then
+ DATA_GOT=" "
+ fi
+fi
+if test -z "${SDATA_GOT}"; then
+ if test -z "${NO_SMALL_DATA}"; then
+ SDATA_GOT=" "
+ fi
+fi
+test -n "$SEPARATE_GOTPLT" && SEPARATE_GOTPLT=" "
CTOR=".ctors ${CONSTRUCTING-0} :
{
${CONSTRUCTING+${CTOR_START}}
${RELOCATING-$INIT_LIT}
${RELOCATING-$INIT}
+ ${DATA_PLT-${BSS_PLT-${PLT}}}
.text ${RELOCATING-0} :
{
*(.got.plt* .plt*)
${RELOCATING-$FINI_LIT}
${RELOCATING-$FINI}
- ${RELOCATING+PROVIDE (__etext = .);}
- ${RELOCATING+PROVIDE (_etext = .);}
- ${RELOCATING+PROVIDE (etext = .);}
+ ${RELOCATING+PROVIDE (__${ETEXT_NAME} = .);}
+ ${RELOCATING+PROVIDE (_${ETEXT_NAME} = .);}
+ ${RELOCATING+PROVIDE (${ETEXT_NAME} = .);}
${WRITABLE_RODATA-${RODATA}}
.rodata1 ${RELOCATING-0} : { *(.rodata1) }
${CREATE_SHLIB-${SDATA2}}
.tdata ${RELOCATING-0} : { *(.tdata${RELOCATING+ .tdata.* .gnu.linkonce.td.*}) }
.tbss ${RELOCATING-0} : { *(.tbss${RELOCATING+ .tbss.* .gnu.linkonce.tb.*})${RELOCATING+ *(.tcommon)} }
- /* Ensure the __preinit_array_start label is properly aligned. We
- could instead move the label definition inside the section, but
- the linker would then create the section even if it turns out to
- be empty, which isn't pretty. */
- ${RELOCATING+. = ALIGN(${ALIGNMENT});}
- ${RELOCATING+${CREATE_SHLIB-PROVIDE (__preinit_array_start = .);}}
.preinit_array ${RELOCATING-0} : { KEEP (*(.preinit_array)) }
- ${RELOCATING+${CREATE_SHLIB-PROVIDE (__preinit_array_end = .);}}
-
- ${RELOCATING+${CREATE_SHLIB-PROVIDE (__init_array_start = .);}}
.init_array ${RELOCATING-0} : { KEEP (*(.init_array)) }
- ${RELOCATING+${CREATE_SHLIB-PROVIDE (__init_array_end = .);}}
-
- ${RELOCATING+${CREATE_SHLIB-PROVIDE (__fini_array_start = .);}}
.fini_array ${RELOCATING-0} : { KEEP (*(.fini_array)) }
- ${RELOCATING+${CREATE_SHLIB-PROVIDE (__fini_array_end = .);}}
- ${RELOCATING+${CTOR}}
- ${RELOCATING+${DTOR}}
+ ${SMALL_DATA_CTOR-${RELOCATING+${CTOR}}}
+ ${SMALL_DATA_DTOR-${RELOCATING+${DTOR}}}
.jcr ${RELOCATING-0} : { KEEP (*(.jcr)) }
${RELOCATING+${DATARELRO}}
${OTHER_RELRO_SECTIONS}
${TEXT_DYNAMIC-${DYNAMIC}}
- ${NO_SMALL_DATA+${GOT}}
+ ${DATA_GOT+${RELRO_NOW+${GOT}}}
+ ${DATA_GOT+${RELRO_NOW+${GOTPLT}}}
+ ${DATA_GOT+${RELRO_NOW-${SEPARATE_GOTPLT+${GOT}}}}
${RELOCATING+${DATA_SEGMENT_RELRO_END}}
+ ${DATA_GOT+${RELRO_NOW-${SEPARATE_GOTPLT-${GOT}}}}
+ ${DATA_GOT+${RELRO_NOW-${GOTPLT}}}
+
+ ${DATA_PLT+${PLT_BEFORE_GOT-${PLT}}}
.data ${RELOCATING-0} :
{
.data1 ${RELOCATING-0} : { *(.data1) }
${WRITABLE_RODATA+${RODATA}}
${OTHER_READWRITE_SECTIONS}
- ${RELOCATING+${OTHER_GOT_SYMBOLS}}
- ${NO_SMALL_DATA-${GOT}}
- ${OTHER_GOT_SECTIONS}
- ${CREATE_SHLIB+${SDATA2}}
- ${CREATE_SHLIB+${SBSS2}}
+ ${SMALL_DATA_CTOR+${RELOCATING+${CTOR}}}
+ ${SMALL_DATA_DTOR+${RELOCATING+${DTOR}}}
+ ${DATA_PLT+${PLT_BEFORE_GOT+${PLT}}}
+ ${SDATA_GOT+${RELOCATING+${OTHER_GOT_SYMBOLS}}}
+ ${SDATA_GOT+${GOT}}
+ ${SDATA_GOT+${OTHER_GOT_SECTIONS}}
${SDATA}
${OTHER_SDATA_SECTIONS}
- ${RELOCATING+_edata = .;}
- ${RELOCATING+PROVIDE (edata = .);}
+ ${RELOCATING+${DATA_END_SYMBOLS-_edata = .; PROVIDE (edata = .);}}
+ /* __bss_start is used by _bfd_elf_provide_section_bound_symbols in
+ elflink.c. */
${RELOCATING+__bss_start = .;}
${RELOCATING+${OTHER_BSS_SYMBOLS}}
${SBSS}
+ ${BSS_PLT+${PLT}}
.bss ${RELOCATING-0} :
{
*(.dynbss)
projects / binutils-gdb.git / commitdiff