* scripttempl/elfxtensa.sc: Sync up with elf.sc.
* emulparams/elf32xtensa.sh (PLT, GOT): Define.
This commit is contained in:
Bob Wilson
parent
01db59d261
commit
be2c2e39a9
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@ -1,3 +1,8 @@
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2005-05-11 Bob Wilson <bob.wilson@acm.org>
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* scripttempl/elfxtensa.sc: Sync up with elf.sc.
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* emulparams/elf32xtensa.sh (PLT, GOT): Define.
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2005-05-11 Alan Modra <amodra@bigpond.net.au>
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* ldgram.y: Add SPECIAL token.
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@ -15,6 +15,8 @@ MACHINE=
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GENERATE_SHLIB_SCRIPT=yes
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GENERATE_COMBRELOC_SCRIPT=yes
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NO_SMALL_DATA=yes
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PLT="/* .plt* sections are embedded in .text */"
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GOT=".got ${RELOCATING-0} : { *(.got) }"
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OTHER_READONLY_SECTIONS="
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.got.loc ${RELOCATING-0} : { *(.got.loc) }
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.xt_except_table ${RELOCATING-0} : { KEEP (*(.xt_except_table)) }
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@ -3,6 +3,8 @@
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# NOP - four byte opcode for no-op (defaults to 0)
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# NO_SMALL_DATA - no .sbss/.sbss2/.sdata/.sdata2 sections if not
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# empty.
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# SMALL_DATA_CTOR - .ctors contains small data.
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# SMALL_DATA_DTOR - .dtors contains small data.
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# DATA_ADDR - if end-of-text-plus-one-page isn't right for data start
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# INITIAL_READONLY_SECTIONS - at start of text segment
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# OTHER_READONLY_SECTIONS - other than .text .init .rodata ...
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@ -16,15 +18,23 @@
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# OTHER_SECTIONS - at the end
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# EXECUTABLE_SYMBOLS - symbols that must be defined for an
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# executable (e.g., _DYNAMIC_LINK)
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# TEXT_START_ADDR - the first byte of the text segment, after any
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# headers.
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# TEXT_BASE_ADDRESS - the first byte of the text segment.
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# TEXT_START_SYMBOLS - symbols that appear at the start of the
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# .text section.
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# DATA_START_SYMBOLS - symbols that appear at the start of the
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# .data section.
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# DATA_END_SYMBOLS - symbols that appear at the end of the
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# writeable data sections.
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# OTHER_GOT_SYMBOLS - symbols defined just before .got.
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# OTHER_GOT_SECTIONS - sections just after .got.
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# OTHER_SDATA_SECTIONS - sections just after .sdata.
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# OTHER_BSS_SYMBOLS - symbols that appear at the start of the
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# .bss section besides __bss_start.
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# DATA_PLT - .plt should be in data segment, not text segment.
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# PLT_BEFORE_GOT - .plt just before .got when .plt is in data segement.
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# BSS_PLT - .plt should be in bss segment
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# TEXT_DYNAMIC - .dynamic in text segment, not data segment.
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# EMBEDDED - whether this is for an embedded system.
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# SHLIB_TEXT_START_ADDR - if set, add to SIZEOF_HEADERS to set
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@ -37,6 +47,12 @@
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# combination of .fini sections.
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# STACK_ADDR - start of a .stack section.
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# OTHER_END_SYMBOLS - symbols to place right at the end of the script.
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# ETEXT_NAME - name of a symbol for the end of the text section,
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# normally etext.
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# SEPARATE_GOTPLT - if set, .got.plt should be separate output section,
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# so that .got can be in the RELRO area. It should be set to
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# the number of bytes in the beginning of .got.plt which can be
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# in the RELRO area as well.
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#
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# When adding sections, do note that the names of some sections are used
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# when specifying the start address of the next.
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@ -66,22 +82,35 @@
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# Each of these can also have corresponding .rel.* and .rela.* sections.
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test -z "$ENTRY" && ENTRY=_start
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test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}
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test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}
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if [ -z "$MACHINE" ]; then OUTPUT_ARCH=${ARCH}; else OUTPUT_ARCH=${ARCH}:${MACHINE}; fi
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test -z "${ELFSIZE}" && ELFSIZE=32
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test -z "${ALIGNMENT}" && ALIGNMENT="${ELFSIZE} / 8"
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test "$LD_FLAG" = "N" && DATA_ADDR=.
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test -z "${ETEXT_NAME}" && ETEXT_NAME=etext
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test -n "$CREATE_SHLIB$CREATE_PIE" && test -n "$SHLIB_DATA_ADDR" && COMMONPAGESIZE=""
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test -z "$CREATE_SHLIB$CREATE_PIE" && test -n "$DATA_ADDR" && COMMONPAGESIZE=""
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test -n "$RELRO_NOW" && unset SEPARATE_GOTPLT
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DATA_SEGMENT_ALIGN="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))"
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DATA_SEGMENT_RELRO_END=""
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DATA_SEGMENT_END=""
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if test -n "${COMMONPAGESIZE}"; then
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DATA_SEGMENT_ALIGN="ALIGN (${SEGMENT_SIZE}) - ((${MAXPAGESIZE} - .) & (${MAXPAGESIZE} - 1)); . = DATA_SEGMENT_ALIGN (${MAXPAGESIZE}, ${COMMONPAGESIZE})"
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DATA_SEGMENT_END=". = DATA_SEGMENT_END (.);"
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DATA_SEGMENT_RELRO_END=". = DATA_SEGMENT_RELRO_END (.);"
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DATA_SEGMENT_RELRO_END=". = DATA_SEGMENT_RELRO_END (${SEPARATE_GOTPLT-0}, .);"
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fi
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INTERP=".interp ${RELOCATING-0} : { *(.interp) }"
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if test -z "$PLT"; then
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PLT=".plt ${RELOCATING-0} : { *(.plt) }"
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fi
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if test -z "$GOT"; then
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if test -z "$SEPARATE_GOTPLT"; then
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GOT=".got ${RELOCATING-0} : { *(.got.plt) *(.got) }"
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else
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GOT=".got ${RELOCATING-0} : { *(.got) }"
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GOTPLT=".got.plt ${RELOCATING-0} : { *(.got.plt) }"
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fi
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fi
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DYNAMIC=".dynamic ${RELOCATING-0} : { *(.dynamic) }"
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RODATA=".rodata ${RELOCATING-0} : { *(.rodata${RELOCATING+ .rodata.* .gnu.linkonce.r.*}) }"
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@ -94,13 +123,10 @@ FINI=".fini 0 : { *(.fini) }"
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if test -z "${NO_SMALL_DATA}"; then
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SBSS=".sbss ${RELOCATING-0} :
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{
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${RELOCATING+PROVIDE (__sbss_start = .);}
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${RELOCATING+PROVIDE (___sbss_start = .);}
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${CREATE_SHLIB+*(.sbss2 .sbss2.* .gnu.linkonce.sb2.*)}
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*(.dynsbss)
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*(.sbss${RELOCATING+ .sbss.* .gnu.linkonce.sb.*})
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*(.scommon)
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${RELOCATING+PROVIDE (__sbss_end = .);}
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${RELOCATING+PROVIDE (___sbss_end = .);}
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}"
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SBSS2=".sbss2 ${RELOCATING-0} : { *(.sbss2${RELOCATING+ .sbss2.* .gnu.linkonce.sb2.*}) }"
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SDATA="/* We want the small data sections together, so single-instruction offsets
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@ -109,6 +135,7 @@ if test -z "${NO_SMALL_DATA}"; then
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.sdata ${RELOCATING-0} :
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{
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${RELOCATING+${SDATA_START_SYMBOLS}}
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${CREATE_SHLIB+*(.sdata2 .sdata2.* .gnu.linkonce.s2.*)}
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*(.sdata${RELOCATING+ .sdata.* .gnu.linkonce.s.*})
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}"
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SDATA2=".sdata2 ${RELOCATING-0} : { *(.sdata2${RELOCATING+ .sdata2.* .gnu.linkonce.s2.*}) }"
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@ -123,6 +150,17 @@ if test -z "${NO_SMALL_DATA}"; then
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else
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NO_SMALL_DATA=" "
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fi
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if test -z "${DATA_GOT}"; then
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if test -n "${NO_SMALL_DATA}"; then
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DATA_GOT=" "
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fi
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fi
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if test -z "${SDATA_GOT}"; then
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if test -z "${NO_SMALL_DATA}"; then
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SDATA_GOT=" "
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fi
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fi
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test -n "$SEPARATE_GOTPLT" && SEPARATE_GOTPLT=" "
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CTOR=".ctors ${CONSTRUCTING-0} :
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{
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${CONSTRUCTING+${CTOR_START}}
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@ -261,6 +299,7 @@ cat <<EOF
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${RELOCATING-$INIT_LIT}
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${RELOCATING-$INIT}
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${DATA_PLT-${BSS_PLT-${PLT}}}
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.text ${RELOCATING-0} :
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{
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*(.got.plt* .plt*)
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@ -286,9 +325,9 @@ cat <<EOF
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${RELOCATING-$FINI_LIT}
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${RELOCATING-$FINI}
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${RELOCATING+PROVIDE (__etext = .);}
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${RELOCATING+PROVIDE (_etext = .);}
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${RELOCATING+PROVIDE (etext = .);}
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${RELOCATING+PROVIDE (__${ETEXT_NAME} = .);}
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${RELOCATING+PROVIDE (_${ETEXT_NAME} = .);}
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${RELOCATING+PROVIDE (${ETEXT_NAME} = .);}
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${WRITABLE_RODATA-${RODATA}}
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.rodata1 ${RELOCATING-0} : { *(.rodata1) }
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${CREATE_SHLIB-${SDATA2}}
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@ -312,32 +351,25 @@ cat <<EOF
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.tdata ${RELOCATING-0} : { *(.tdata${RELOCATING+ .tdata.* .gnu.linkonce.td.*}) }
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.tbss ${RELOCATING-0} : { *(.tbss${RELOCATING+ .tbss.* .gnu.linkonce.tb.*})${RELOCATING+ *(.tcommon)} }
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/* Ensure the __preinit_array_start label is properly aligned. We
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could instead move the label definition inside the section, but
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the linker would then create the section even if it turns out to
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be empty, which isn't pretty. */
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${RELOCATING+. = ALIGN(${ALIGNMENT});}
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${RELOCATING+${CREATE_SHLIB-PROVIDE (__preinit_array_start = .);}}
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.preinit_array ${RELOCATING-0} : { KEEP (*(.preinit_array)) }
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${RELOCATING+${CREATE_SHLIB-PROVIDE (__preinit_array_end = .);}}
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${RELOCATING+${CREATE_SHLIB-PROVIDE (__init_array_start = .);}}
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.init_array ${RELOCATING-0} : { KEEP (*(.init_array)) }
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${RELOCATING+${CREATE_SHLIB-PROVIDE (__init_array_end = .);}}
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${RELOCATING+${CREATE_SHLIB-PROVIDE (__fini_array_start = .);}}
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.fini_array ${RELOCATING-0} : { KEEP (*(.fini_array)) }
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${RELOCATING+${CREATE_SHLIB-PROVIDE (__fini_array_end = .);}}
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${RELOCATING+${CTOR}}
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${RELOCATING+${DTOR}}
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${SMALL_DATA_CTOR-${RELOCATING+${CTOR}}}
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${SMALL_DATA_DTOR-${RELOCATING+${DTOR}}}
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.jcr ${RELOCATING-0} : { KEEP (*(.jcr)) }
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${RELOCATING+${DATARELRO}}
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${OTHER_RELRO_SECTIONS}
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${TEXT_DYNAMIC-${DYNAMIC}}
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${NO_SMALL_DATA+${GOT}}
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${DATA_GOT+${RELRO_NOW+${GOT}}}
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${DATA_GOT+${RELRO_NOW+${GOTPLT}}}
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${DATA_GOT+${RELRO_NOW-${SEPARATE_GOTPLT+${GOT}}}}
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${RELOCATING+${DATA_SEGMENT_RELRO_END}}
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${DATA_GOT+${RELRO_NOW-${SEPARATE_GOTPLT-${GOT}}}}
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${DATA_GOT+${RELRO_NOW-${GOTPLT}}}
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${DATA_PLT+${PLT_BEFORE_GOT-${PLT}}}
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.data ${RELOCATING-0} :
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{
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@ -349,18 +381,21 @@ cat <<EOF
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.data1 ${RELOCATING-0} : { *(.data1) }
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${WRITABLE_RODATA+${RODATA}}
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${OTHER_READWRITE_SECTIONS}
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${RELOCATING+${OTHER_GOT_SYMBOLS}}
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${NO_SMALL_DATA-${GOT}}
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${OTHER_GOT_SECTIONS}
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${CREATE_SHLIB+${SDATA2}}
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${CREATE_SHLIB+${SBSS2}}
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${SMALL_DATA_CTOR+${RELOCATING+${CTOR}}}
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${SMALL_DATA_DTOR+${RELOCATING+${DTOR}}}
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${DATA_PLT+${PLT_BEFORE_GOT+${PLT}}}
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${SDATA_GOT+${RELOCATING+${OTHER_GOT_SYMBOLS}}}
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${SDATA_GOT+${GOT}}
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${SDATA_GOT+${OTHER_GOT_SECTIONS}}
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${SDATA}
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${OTHER_SDATA_SECTIONS}
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${RELOCATING+_edata = .;}
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${RELOCATING+PROVIDE (edata = .);}
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${RELOCATING+${DATA_END_SYMBOLS-_edata = .; PROVIDE (edata = .);}}
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/* __bss_start is used by _bfd_elf_provide_section_bound_symbols in
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elflink.c. */
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${RELOCATING+__bss_start = .;}
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${RELOCATING+${OTHER_BSS_SYMBOLS}}
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${SBSS}
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${BSS_PLT+${PLT}}
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.bss ${RELOCATING-0} :
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{
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*(.dynbss)
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