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* scripttempl/elfxtensa.sc: Sync up with elf.sc.

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* emulparams/elf32xtensa.sh (PLT, GOT): Define.
This commit is contained in:
Bob Wilson 2005-05-12 00:31:22 +00:00
parent 01db59d261
commit be2c2e39a9
3 changed files with 73 additions and 31 deletions
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5
ld/ChangeLog
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@ -1,3 +1,8 @@
2005-05-11 Bob Wilson <bob.wilson@acm.org>
* scripttempl/elfxtensa.sc: Sync up with elf.sc.
* emulparams/elf32xtensa.sh (PLT, GOT): Define.
2005-05-11 Alan Modra <amodra@bigpond.net.au>
* ldgram.y: Add SPECIAL token.

2
ld/emulparams/elf32xtensa.sh
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@ -15,6 +15,8 @@ MACHINE=
GENERATE_SHLIB_SCRIPT=yes
GENERATE_COMBRELOC_SCRIPT=yes
NO_SMALL_DATA=yes
PLT="/* .plt* sections are embedded in .text */"
GOT=".got ${RELOCATING-0} : { *(.got) }"
OTHER_READONLY_SECTIONS="
.got.loc ${RELOCATING-0} : { *(.got.loc) }
.xt_except_table ${RELOCATING-0} : { KEEP (*(.xt_except_table)) }

97
ld/scripttempl/elfxtensa.sc
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@ -3,6 +3,8 @@
# 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 ...
@ -16,15 +18,23 @@
# 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
@ -37,6 +47,12 @@
# 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.
@ -66,22 +82,35 @@
# 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.*}) }"
@ -94,13 +123,10 @@ FINI=".fini 0 : { *(.fini) }"
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
@ -109,6 +135,7 @@ if test -z "${NO_SMALL_DATA}"; then
.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.*}) }"
@ -123,6 +150,17 @@ if test -z "${NO_SMALL_DATA}"; then
else
NO_SMALL_DATA=" "
fi
if test -z "${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}}
@ -261,6 +299,7 @@ cat <<EOF
${RELOCATING-$INIT_LIT}
${RELOCATING-$INIT}
${DATA_PLT-${BSS_PLT-${PLT}}}
.text ${RELOCATING-0} :
{
*(.got.plt* .plt*)
@ -286,9 +325,9 @@ cat <<EOF
${RELOCATING-$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}}
@ -312,32 +351,25 @@ cat <<EOF
.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} :
{
@ -349,18 +381,21 @@ cat <<EOF
.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)