313 lines
11 KiB
Python
313 lines
11 KiB
Python
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#
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# Unusual variables checked by this code:
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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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# OTHER_READONLY_SECTIONS - other than .text .init .rodata ...
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# (e.g., .PARISC.milli)
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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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#
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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=${OUTPUT_FORMAT}
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# If we request a big endian toolchain, give a big endian linker
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test -z "$GOT" && GOT=".got ${RELOCATING-0} : {${RELOCATING+ *(.got.plt)} *(.got) } ${RELOCATING+ > ${DATA_MEMORY}}"
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test "${ARC_ENDIAN}" = "big" && OUTPUT_FORMAT=${BIG_OUTPUT_FORMAT}
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if [ -z "$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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CTOR=".ctors ${CONSTRUCTING-0} :
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{
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${CONSTRUCTING+${CTOR_START}}
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/* gcc uses crtbegin.o to find the start of
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the constructors, so we make sure it is
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first. Because this is a wildcard, it
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doesn't matter if the user does not
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actually link against crtbegin.o; the
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linker won't look for a file to match a
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wildcard. The wildcard also means that it
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doesn't matter which directory crtbegin.o
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is in. */
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KEEP (*crtbegin*.o(.ctors))
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/* We don't want to include the .ctor section from
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from the crtend.o file until after the sorted ctors.
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The .ctor section from the crtend file contains the
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end of ctors marker and it must be last */
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KEEP (*(EXCLUDE_FILE (*crtend*.o $OTHER_EXCLUDE_FILES) .ctors))
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KEEP (*(SORT(.ctors.*)))
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KEEP (*(.ctors))
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${CONSTRUCTING+${CTOR_END}}
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} ${RELOCATING+ > ${DATA_MEMORY}}"
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DTOR=".dtors ${CONSTRUCTING-0} :
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{
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${CONSTRUCTING+${DTOR_START}}
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KEEP (*crtbegin*.o(.dtors))
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KEEP (*(EXCLUDE_FILE (*crtend*.o $OTHER_EXCLUDE_FILES) .dtors))
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KEEP (*(SORT(.dtors.*)))
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KEEP (*(.dtors))
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${CONSTRUCTING+${DTOR_END}}
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} ${RELOCATING+ > ${DATA_MEMORY}}"
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IVT="
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/* If the 'ivtbase_addr' symbol is defined, it indicates the base address of
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the interrupt vectors. See description of INT_VECTOR_BASE register. */
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.ivt DEFINED (ivtbase_addr) ? ivtbase_addr : 0x00 :
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{
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${RELOCATING+ PROVIDE (__ivtbase_addr = .); }
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KEEP (*(.ivt));
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} ${RELOCATING+ > ${STARTUP_MEMORY}}"
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if test -z "${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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${RELOCATING+PROVIDE (___sbss_start = .);}
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*(.dynsbss)
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*(.sbss${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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} ${RELOCATING+ > ${SDATA_MEMORY}}"
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SBSS2=".sbss2 ${RELOCATING-0} : { *(.sbss2${RELOCATING+ .sbss2.* .gnu.linkonce.sb2.*}) } ${RELOCATING+ > ${SDATA_MEMORY}}"
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SDATA="/* We want the small data sections together, so single-instruction offsets
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can access them all, and initialized data all before uninitialized, so
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we can shorten the on-disk segment size. */
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.sdata ${RELOCATING-0} :
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{
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${RELOCATING+${SDATA_START_SYMBOLS}}
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*(.sdata${RELOCATING+ .sdata.* .gnu.linkonce.s.*})
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${RELOCATING+_edata = .;}
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${RELOCATING+PROVIDE (edata = .);}
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} ${RELOCATING+ > ${SDATA_MEMORY}}"
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SDATA2=".sdata2 ${RELOCATING-0} : { *(.sdata2${RELOCATING+ .sdata2.* .gnu.linkonce.s2.*}) } ${RELOCATING+ > ${SDATA_MEMORY}}"
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REL_SDATA=".rel.sdata ${RELOCATING-0} : { *(.rel.sdata${RELOCATING+ .rel.sdata.* .rel.gnu.linkonce.s.*}) }
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.rela.sdata ${RELOCATING-0} : { *(.rela.sdata${RELOCATING+ .rela.sdata.* .rela.gnu.linkonce.s.*}) }"
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REL_SBSS=".rel.sbss ${RELOCATING-0} : { *(.rel.sbss${RELOCATING+ .rel.sbss.* .rel.gnu.linkonce.sb.*}) }
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.rela.sbss ${RELOCATING-0} : { *(.rela.sbss${RELOCATING+ .rela.sbss.* .rela.gnu.linkonce.sb.*}) }"
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REL_SDATA2=".rel.sdata2 ${RELOCATING-0} : { *(.rel.sdata2${RELOCATING+ .rel.sdata2.* .rel.gnu.linkonce.s2.*}) }
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.rela.sdata2 ${RELOCATING-0} : { *(.rela.sdata2${RELOCATING+ .rela.sdata2.* .rela.gnu.linkonce.s2.*}) }"
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REL_SBSS2=".rel.sbss2 ${RELOCATING-0} : { *(.rel.sbss2${RELOCATING+ .rel.sbss2.* .rel.gnu.linkonce.sb2.*}) }
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.rela.sbss2 ${RELOCATING-0} : { *(.rela.sbss2${RELOCATING+ .rela.sbss2.* .rela.gnu.linkonce.sb2.*}) }"
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fi
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#
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# We provide two emulations: a fixed on that defines some memory banks
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# and a configurable one that includes a user provided memory definition.
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#
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case $GENERIC_BOARD in
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yes|1|YES)
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MEMORY_DEF="
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/* Get memory banks definition from some user configuration file.
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This file must be located in some linker directory (search path
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with -L<dir>). See fixed memory banks emulation script. */
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INCLUDE memory.x;
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"
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;;
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*)
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MEMORY_DEF="
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/* Fixed definition of the available memory banks.
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See generic emulation script for a user defined configuration. */
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MEMORY
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{
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ICCM : ORIGIN = 0x00000000, LENGTH = ${ICCM_SIZE}
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DCCM : ORIGIN = ${RAM_START_ADDR}, LENGTH = ${RAM_SIZE}
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}
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"
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;;
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esac
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cat <<EOF
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OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}", "${LITTLE_OUTPUT_FORMAT}")
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OUTPUT_ARCH(${OUTPUT_ARCH})
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${RELOCATING+ENTRY(${ENTRY})}
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${RELOCATING+${LIB_SEARCH_DIRS}}
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${RELOCATING+${EXECUTABLE_SYMBOLS}}
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${RELOCATING+${MEMORY_DEF}}
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SECTIONS
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{
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${RELOCATING+${IVT}}
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/* Read-only sections, merged into text segment: */
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${TEXT_DYNAMIC+${DYNAMIC}}
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.hash ${RELOCATING-0} : { *(.hash) }
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.dynsym ${RELOCATING-0} : { *(.dynsym) }
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.dynstr ${RELOCATING-0} : { *(.dynstr) }
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.gnu.version ${RELOCATING-0} : { *(.gnu.version) }
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.gnu.version_d ${RELOCATING-0} : { *(.gnu.version_d) }
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.gnu.version_r ${RELOCATING-0} : { *(.gnu.version_r) }
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.rel.init ${RELOCATING-0} : { *(.rel.init) }
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.rela.init ${RELOCATING-0} : { *(.rela.init) }
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.rel.text ${RELOCATING-0} : { *(.rel.text${RELOCATING+ .rel.text.* .rel.gnu.linkonce.t.*}) }
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.rela.text ${RELOCATING-0} : { *(.rela.text${RELOCATING+ .rela.text.* .rela.gnu.linkonce.t.*}) }
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.rel.fini ${RELOCATING-0} : { *(.rel.fini) }
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.rela.fini ${RELOCATING-0} : { *(.rela.fini) }
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.rel.rodata ${RELOCATING-0} : { *(.rel.rodata${RELOCATING+ .rel.rodata.* .rel.gnu.linkonce.r.*}) }
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.rela.rodata ${RELOCATING-0} : { *(.rela.rodata${RELOCATING+ .rela.rodata.* .rela.gnu.linkonce.r.*}) }
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.rel.data ${RELOCATING-0} : { *(.rel.data${RELOCATING+ .rel.data.* .rel.gnu.linkonce.d.*}) }
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.rela.data ${RELOCATING-0} : { *(.rela.data${RELOCATING+ .rela.data.* .rela.gnu.linkonce.d.*}) }
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.rel.tdata ${RELOCATING-0} : { *(.rel.tdata${RELOCATING+ .rel.tdata.* .rel.gnu.linkonce.td.*}) }
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.rela.tdata ${RELOCATING-0} : { *(.rela.tdata${RELOCATING+ .rela.tdata.* .rela.gnu.linkonce.td.*}) }
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.rel.tbss ${RELOCATING-0} : { *(.rel.tbss${RELOCATING+ .rel.tbss.* .rel.gnu.linkonce.tb.*}) }
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.rela.tbss ${RELOCATING-0} : { *(.rela.tbss${RELOCATING+ .rela.tbss.* .rela.gnu.linkonce.tb.*}) }
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.rel.ctors ${RELOCATING-0} : { *(.rel.ctors) }
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.rela.ctors ${RELOCATING-0} : { *(.rela.ctors) }
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.rel.dtors ${RELOCATING-0} : { *(.rel.dtors) }
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.rela.dtors ${RELOCATING-0} : { *(.rela.dtors) }
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.rel.got ${RELOCATING-0} : { *(.rel.got) }
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.rela.got ${RELOCATING-0} : { *(.rela.got) }
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${REL_SDATA}
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${REL_SBSS}
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${REL_SDATA2}
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${REL_SBSS2}
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.rel.bss ${RELOCATING-0} : { *(.rel.bss${RELOCATING+ .rel.bss.* .rel.gnu.linkonce.b.*}) }
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.rela.bss ${RELOCATING-0} : { *(.rela.bss${RELOCATING+ .rela.bss.* .rela.gnu.linkonce.b.*}) }
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.text ${RELOCATING-0} :
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{
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${RELOCATING+${TEXT_START_SYMBOLS}}
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${RELOCATING+ . = ALIGN(4);}
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${RELOCATING+${INIT_START}}
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KEEP (*(SORT_NONE(.init)))
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${RELOCATING+${INIT_END}}
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/* Start here after reset. */
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${RELOCATING+ . = ALIGN(4);}
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KEEP (*crt0.o(.text.__startup))
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/* Remaining code. */
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${RELOCATING+ . = ALIGN(4);}
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*(.text .stub${RELOCATING+ .text.* .gnu.linkonce.t.*})
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/* .gnu.warning sections are handled specially by elf.em. */
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*(.gnu.warning)
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${RELOCATING+${OTHER_TEXT_SECTIONS}}
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} ${RELOCATING+ > ${TEXT_MEMORY}} =${NOP-0}
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.fini ${RELOCATING-0} :
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{
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${RELOCATING+${FINI_START}}
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KEEP (*(SORT_NONE(.fini)))
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${RELOCATING+${FINI_END}}
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${RELOCATING+PROVIDE (__etext = .);}
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${RELOCATING+PROVIDE (_etext = .);}
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${RELOCATING+PROVIDE (etext = .);}
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} ${RELOCATING+ > ${TEXT_MEMORY}} =${NOP-0}
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.jcr ${RELOCATING-0} :
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{
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KEEP (*(.jcr))
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} ${RELOCATING+> ${TEXT_MEMORY}}
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.eh_frame ${RELOCATING-0} :
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{
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KEEP (*(.eh_frame))
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} ${RELOCATING+> ${TEXT_MEMORY}}
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.gcc_except_table ${RELOCATING-0} :
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{
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*(.gcc_except_table) *(.gcc_except_table.*)
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} ${RELOCATING+> ${TEXT_MEMORY}}
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.plt ${RELOCATING-0} :
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{
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*(.plt)
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} ${RELOCATING+> ${TEXT_MEMORY}}
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.jlitab ${RELOCATING-0} :
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{
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${RELOCATING+${JLI_START_TABLE}}
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jlitab*.o:(.jlitab*) *(.jlitab*)
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} ${RELOCATING+> ${TEXT_MEMORY}}
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.rodata ${RELOCATING-0} :
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{
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*(.rodata) ${RELOCATING+*(.rodata.*)} ${RELOCATING+*(.gnu.linkonce.r.*)}
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} ${RELOCATING+> ${TEXT_MEMORY}}
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.rodata1 ${RELOCATING-0} : { *(.rodata1) } ${RELOCATING+> ${TEXT_MEMORY}}
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${RELOCATING+${OTHER_READONLY_SECTIONS}}
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/* Start of the data section image in ROM. */
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${RELOCATING+__data_image = .;}
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${RELOCATING+PROVIDE (__data_image = .);}
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.data ${RELOCATING-0} :
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{
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${RELOCATING+ PROVIDE (__data_start = .) ; }
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/* --gc-sections will delete empty .data. This leads to wrong start
|
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addresses for subsequent sections because -Tdata= from the command
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line will have no effect, see PR13697. Thus, keep .data */
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KEEP (*(.data))
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${RELOCATING+${DATA_START_SYMBOLS}}
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${RELOCATING+*(.data.* .gnu.linkonce.d.*)}
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${CONSTRUCTING+SORT(CONSTRUCTORS)}
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} ${RELOCATING+ > ${DATA_MEMORY}}
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${GOT}
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${RELOCATING+${CTOR}}
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${RELOCATING+${DTOR}}
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${RELOCATING+${SDATA}}
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${RELOCATING+${SDATA2}}
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${RELOCATING+${SBSS}}
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${RELOCATING+${SBSS2}}
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.bss ${RELOCATING-0} :
|
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{
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${RELOCATING+*(.dynbss)}
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*(.bss${RELOCATING+ .bss.* .gnu.linkonce.b.*})
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${RELOCATING+*(COMMON)
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/* Align here to ensure that the .bss section occupies space up to
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_end. Align after .bss to ensure correct alignment even if the
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.bss section disappears because there are no input sections. */
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. = ALIGN(${ALIGNMENT});}
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${RELOCATING+_end = .;}
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${RELOCATING+PROVIDE (end = .);}
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} ${RELOCATING+ > ${DATA_MEMORY}}
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/* Global data not cleared after reset. */
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.noinit ${RELOCATING-0}:
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{
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*(.noinit${RELOCATING+ .noinit.* .gnu.linkonce.n.*})
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${RELOCATING+. = ALIGN(${ALIGNMENT});}
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${RELOCATING+ PROVIDE (__start_heap = .) ; }
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} ${RELOCATING+ > ${DATA_MEMORY}}
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${RELOCATING+ PROVIDE (__stack_top = (ORIGIN (${DATA_MEMORY}) + LENGTH (${DATA_MEMORY}) - 1) & -4);}
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${RELOCATING+ PROVIDE (__end_heap = ORIGIN (${DATA_MEMORY}) + LENGTH (${DATA_MEMORY}) - 1);}
|
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|
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/* Stabs debugging sections. */
|
||
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.stab 0 : { *(.stab) }
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.stabstr 0 : { *(.stabstr) }
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.stab.excl 0 : { *(.stab.excl) }
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.stab.exclstr 0 : { *(.stab.exclstr) }
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.stab.index 0 : { *(.stab.index) }
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.stab.indexstr 0 : { *(.stab.indexstr) }
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|
|
.comment 0 : { *(.comment) }
|
||
|
|
.note.gnu.build-id : { *(.note.gnu.build-id) }
|
||
|
|
EOF
|
||
|
|
|
||
|
|
. $srcdir/scripttempl/DWARF.sc
|
||
|
|
|
||
|
|
cat <<EOF
|
||
|
|
/* ARC Extension Sections */
|
||
|
|
.arcextmap 0 : { *(.arcextmap.*) }
|
||
|
|
}
|
||
|
|
EOF
|