Wolfgang Thallergcc16 merge934c3885 months agoHistory
424 lines · 16.9 KB · Scala
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## Unusual variables checked by this code:#	NOP - four byte opcode for no-op (defaults to 0)#	NO_SMALL_DATA - no .sbss/.sbss2/.sdata/.sdata2 sections if not#		empty.#	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 ...#		(e.g., .PARISC.milli)#	OTHER_TEXT_SECTIONS - these get put in .text when relocating#	OTHER_READWRITE_SECTIONS - other than .data .bss .ctors .sdata ...#		(e.g., .PARISC.global)#	OTHER_BSS_SECTIONS - other than .bss .sbss ...#	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_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.#	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#		start address of shared library.#	INPUT_FILES - INPUT command of files to always include#	WRITABLE_RODATA - if set, the .rodata section should be writable#	INIT_START, INIT_END -  statements just before and just after#	combination of .init sections.#	FINI_START, FINI_END - statements just before and just after#	combination of .fini sections.#	STACK_ADDR - start of a .stack section.#	OTHER_END_SYMBOLS - symbols to place right at the end of the script.## When adding sections, do note that the names of some sections are used# when specifying the start address of the next.# #  Many sections come in three flavours.  There is the 'real' section,#  like ".data".  Then there are the per-procedure or per-variable#  sections, generated by -ffunction-sections and -fdata-sections in GCC,#  and useful for --gc-sections, which for a variable "foo" might be#  ".data.foo".  Then there are the linkonce sections, for which the linker#  eliminates duplicates, which are named like ".gnu.linkonce.d.foo".#  The exact correspondences are:##  Section	Linkonce section#  .text	.gnu.linkonce.t.foo#  .rodata	.gnu.linkonce.r.foo#  .data	.gnu.linkonce.d.foo#  .bss		.gnu.linkonce.b.foo#  .sdata	.gnu.linkonce.s.foo#  .sbss	.gnu.linkonce.sb.foo#  .sdata2	.gnu.linkonce.s2.foo#  .sbss2	.gnu.linkonce.sb2.foo#  .debug_info	.gnu.linkonce.wi.foo#  .tdata	.gnu.linkonce.td.foo#  .tbss	.gnu.linkonce.tb.foo##  Each of these can also have corresponding .rel.* and .rela.* sections. test -z "$ENTRY" && ENTRY=starttest -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}# If we request a big endian toolchain, give a big endian linkertest "${ARC_ENDIAN}" = "big" && OUTPUT_FORMAT=${BIG_OUTPUT_FORMAT}if [ -z "$MACHINE" ]; then OUTPUT_ARCH=${ARCH}; else OUTPUT_ARCH=${ARCH}:${MACHINE}; fitest -z "${ELFSIZE}" && ELFSIZE=32test -z "${ALIGNMENT}" && ALIGNMENT="${ELFSIZE} / 8"test "$LD_FLAG" = "N" && DATA_ADDR=.test -n "$CREATE_SHLIB$CREATE_PIE" && test -n "$SHLIB_DATA_ADDR" && COMMONPAGESIZE=""test -z "$CREATE_SHLIB$CREATE_PIE" && test -n "$DATA_ADDR" && COMMONPAGESIZE=""DATA_SEGMENT_ALIGN="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))"DATA_SEGMENT_END=""if test -n "${COMMONPAGESIZE}"; then  DATA_SEGMENT_ALIGN="ALIGN (${SEGMENT_SIZE}) - ((${MAXPAGESIZE} - .) & (${MAXPAGESIZE} - 1)); . = DATA_SEGMENT_ALIGN (${MAXPAGESIZE}, ${COMMONPAGESIZE})"  DATA_SEGMENT_END=". = DATA_SEGMENT_END (.);"fiINTERP=".interp       ${RELOCATING-0} : { *(.interp) }"PLT=".plt          ${RELOCATING-0} : { *(.plt) }"test -z "$GOT" && GOT=".got          ${RELOCATING-0} : {${RELOCATING+ *(.got.plt)} *(.got) }"DYNAMIC=".dynamic      ${RELOCATING-0} : { *(.dynamic) }"RODATA=".rodata       ${RELOCATING-0} : { *(.rodata${RELOCATING+ .rodata.* .gnu.linkonce.r.*}) }"STACKNOTE="/DISCARD/ : { *(.note.GNU-stack) }"if test -z "${NO_SMALL_DATA}"; then  SBSS=".sbss         ${RELOCATING-0} :  {    ${RELOCATING+PROVIDE (__sbss_start = .);}    ${RELOCATING+PROVIDE (___sbss_start = .);}    ${RELOCATING+*(.dynsbss)}    *(.sbss${RELOCATING+ .sbss.* .gnu.linkonce.sb.*})    ${RELOCATING+*(.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     can access them all, and initialized data all before uninitialized, so     we can shorten the on-disk segment size.  */  .sdata        ${RELOCATING-0} :  {    ${RELOCATING+${SDATA_START_SYMBOLS}}    *(.sdata${RELOCATING+ .sdata.* .gnu.linkonce.s.*})  }"  SDATA2=".sdata2       ${RELOCATING-0} : { *(.sdata2${RELOCATING+ .sdata2.* .gnu.linkonce.s2.*}) }"  REL_SDATA=".rel.sdata    ${RELOCATING-0} : { *(.rel.sdata${RELOCATING+ .rel.sdata.* .rel.gnu.linkonce.s.*}) }  .rela.sdata   ${RELOCATING-0} : { *(.rela.sdata${RELOCATING+ .rela.sdata.* .rela.gnu.linkonce.s.*}) }"  REL_SBSS=".rel.sbss     ${RELOCATING-0} : { *(.rel.sbss${RELOCATING+ .rel.sbss.* .rel.gnu.linkonce.sb.*}) }  .rela.sbss    ${RELOCATING-0} : { *(.rela.sbss${RELOCATING+ .rela.sbss.* .rela.gnu.linkonce.sb.*}) }"  REL_SDATA2=".rel.sdata2   ${RELOCATING-0} : { *(.rel.sdata2${RELOCATING+ .rel.sdata2.* .rel.gnu.linkonce.s2.*}) }  .rela.sdata2  ${RELOCATING-0} : { *(.rela.sdata2${RELOCATING+ .rela.sdata2.* .rela.gnu.linkonce.s2.*}) }"  REL_SBSS2=".rel.sbss2    ${RELOCATING-0} : { *(.rel.sbss2${RELOCATING+ .rel.sbss2.* .rel.gnu.linkonce.sb2.*}) }  .rela.sbss2   ${RELOCATING-0} : { *(.rela.sbss2${RELOCATING+ .rela.sbss2.* .rela.gnu.linkonce.sb2.*}) }"fiINIT_ARRAY=".init_array   ${RELOCATING-0} :  {    ${RELOCATING+${CREATE_SHLIB-PROVIDE (__init_array_start = .);}}    KEEP (*(SORT(.init_array.*)))    KEEP (*(.init_array))    ${RELOCATING+${CREATE_SHLIB-PROVIDE (__init_array_end = .);}}  }"FINI_ARRAY=".fini_array   ${RELOCATING-0} :  {    ${RELOCATING+${CREATE_SHLIB-PROVIDE (__fini_array_start = .);}}    KEEP (*(SORT(.fini_array.*)))    KEEP (*(.fini_array))    ${RELOCATING+${CREATE_SHLIB-PROVIDE (__fini_array_end = .);}}  }"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 $OTHER_EXCLUDE_FILES) .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 $OTHER_EXCLUDE_FILES) .dtors))    KEEP (*(SORT(.dtors.*)))    KEEP (*(.dtors))    ${CONSTRUCTING+${DTOR_END}}  }"STACK="  .stack        ${RELOCATING-0}${RELOCATING+${STACK_ADDR}} :  {    ${RELOCATING+_stack = .;}    *(.stack)  }" TEXT_START_ADDR="SEGMENT_START(\"text-segment\", ${TEXT_START_ADDR})"SHLIB_TEXT_START_ADDR="SEGMENT_START(\"text-segment\", ${SHLIB_TEXT_START_ADDR:-0})" # if this is for an embedded system, don't add SIZEOF_HEADERS.if [ -z "$EMBEDDED" ]; then   test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR} + SIZEOF_HEADERS"else   test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR}"fi cat <<EOFOUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}",	      "${LITTLE_OUTPUT_FORMAT}")OUTPUT_ARCH(${OUTPUT_ARCH})${RELOCATING+ENTRY(${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}}${RELOCATING+${INPUT_FILES}}${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.  */} SECTIONS{  /* Read-only sections, merged into text segment: */  ${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+PROVIDE (__executable_start = ${TEXT_START_ADDR}); . = ${TEXT_BASE_ADDRESS};}}}  ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR:-0} + SIZEOF_HEADERS;}}  ${CREATE_PIE+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR:-0} + SIZEOF_HEADERS;}}  ${CREATE_SHLIB-${INTERP}}  ${INITIAL_READONLY_SECTIONS}  ${TEXT_DYNAMIC+${DYNAMIC}}  .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 ${RELOCATING-0}: { *(.gnu.version_r) } EOFif [ "x$COMBRELOC" = x ]; then  COMBRELOCCAT=catelse  COMBRELOCCAT="cat > $COMBRELOC"fieval $COMBRELOCCAT <<EOF  .rel.init     ${RELOCATING-0} : { *(.rel.init) }  .rela.init    ${RELOCATING-0} : { *(.rela.init) }  .rel.text     ${RELOCATING-0} : { *(.rel.text${RELOCATING+ .rel.text.* .rel.gnu.linkonce.t.*}) }  .rela.text    ${RELOCATING-0} : { *(.rela.text${RELOCATING+ .rela.text.* .rela.gnu.linkonce.t.*}) }  .rel.fini     ${RELOCATING-0} : { *(.rel.fini) }  .rela.fini    ${RELOCATING-0} : { *(.rela.fini) }  .rel.rodata   ${RELOCATING-0} : { *(.rel.rodata${RELOCATING+ .rel.rodata.* .rel.gnu.linkonce.r.*}) }  .rela.rodata  ${RELOCATING-0} : { *(.rela.rodata${RELOCATING+ .rela.rodata.* .rela.gnu.linkonce.r.*}) }  ${OTHER_READONLY_RELOC_SECTIONS}  .rel.data     ${RELOCATING-0} : { *(.rel.data${RELOCATING+ .rel.data.* .rel.gnu.linkonce.d.*}) }  .rela.data    ${RELOCATING-0} : { *(.rela.data${RELOCATING+ .rela.data.* .rela.gnu.linkonce.d.*}) }  .rel.tdata	${RELOCATING-0} : { *(.rel.tdata${RELOCATING+ .rel.tdata.* .rel.gnu.linkonce.td.*}) }  .rela.tdata	${RELOCATING-0} : { *(.rela.tdata${RELOCATING+ .rela.tdata.* .rela.gnu.linkonce.td.*}) }  .rel.tbss	${RELOCATING-0} : { *(.rel.tbss${RELOCATING+ .rel.tbss.* .rel.gnu.linkonce.tb.*}) }  .rela.tbss	${RELOCATING-0} : { *(.rela.tbss${RELOCATING+ .rela.tbss.* .rela.gnu.linkonce.tb.*}) }  .rel.ctors    ${RELOCATING-0} : { *(.rel.ctors) }  .rela.ctors   ${RELOCATING-0} : { *(.rela.ctors) }  .rel.dtors    ${RELOCATING-0} : { *(.rel.dtors) }  .rela.dtors   ${RELOCATING-0} : { *(.rela.dtors) }  .rel.got      ${RELOCATING-0} : { *(.rel.got) }  .rela.got     ${RELOCATING-0} : { *(.rela.got) }  ${OTHER_GOT_RELOC_SECTIONS}  ${REL_SDATA}  ${REL_SBSS}  ${REL_SDATA2}  ${REL_SBSS2}  .rel.bss      ${RELOCATING-0} : { *(.rel.bss${RELOCATING+ .rel.bss.* .rel.gnu.linkonce.b.*}) }  .rela.bss     ${RELOCATING-0} : { *(.rela.bss${RELOCATING+ .rela.bss.* .rela.gnu.linkonce.b.*}) }EOFif [ -n "$COMBRELOC" ]; thencat <<EOF  .rel.dyn      ${RELOCATING-0} :    {EOFsed -e '/^[	 ]*[{}][	 ]*$/d;/:[	 ]*$/d;/\.rela\./d;s/^.*: { *\(.*\)}$/      \1/' $COMBRELOCcat <<EOF    }  .rela.dyn     ${RELOCATING-0} :    {EOFsed -e '/^[	 ]*[{}][	 ]*$/d;/:[	 ]*$/d;/\.rel\./d;s/^.*: { *\(.*\)}/      \1/' $COMBRELOCcat <<EOF    }EOFficat <<EOF  .rel.plt      ${RELOCATING-0} : { *(.rel.plt) }  .rela.plt     ${RELOCATING-0} : { *(.rela.plt) }  ${OTHER_PLT_RELOC_SECTIONS}   .init         ${RELOCATING-0} :  {    ${RELOCATING+${INIT_START}}    KEEP (*(SORT_NONE(.init)))    ${RELOCATING+${INIT_END}}  } =${NOP-0}   ${DATA_PLT-${BSS_PLT-${PLT}}}  .jlitab       ${RELOCATING-0} :  {    ${RELOCATING+${JLI_START_TABLE}}    ${RELOCATING+jlitab*.o(.jlitab*)}    *(.jlitab${RELOCATING+*})  } =${NOP-0}  .text         ${RELOCATING-0} :  {    ${RELOCATING+${TEXT_START_SYMBOLS}}    *(.text .stub${RELOCATING+ .text.* .gnu.linkonce.t.*})    /* .gnu.warning sections are handled specially by elf.em.  */    *(.gnu.warning)    ${RELOCATING+${OTHER_TEXT_SECTIONS}}  } =${NOP-0}  .text.init ${RELOCATING-0} :  {    *(.text.init)  } =${NOP-0}  .fini         ${RELOCATING-0} :  {    ${RELOCATING+${FINI_START}}    KEEP (*(SORT_NONE(.fini)))    ${RELOCATING+${FINI_END}}  } =${NOP-0}  ${RELOCATING+PROVIDE (__etext = .);}  ${RELOCATING+PROVIDE (_etext = .);}  ${RELOCATING+PROVIDE (etext = .);}  ${WRITABLE_RODATA-${RODATA}}  .rodata1      ${RELOCATING-0} : { *(.rodata1) }  ${CREATE_SHLIB-${SDATA2}}  ${CREATE_SHLIB-${SBSS2}}  ${OTHER_READONLY_SECTIONS}  .eh_frame_hdr ${RELOCATING-0} : { *(.eh_frame_hdr) }  .gcc_except_table ${RELOCATING-0} : ONLY_IF_RO { *(.gcc_except_table${RELOCATING+ .gcc_except_table.*}) }   /* Adjust the address for the data segment.  We want to adjust up to     the same address within the page on the next page up.  */  ${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+. = ${DATA_ADDR-${DATA_SEGMENT_ALIGN}};}}}  ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_DATA_ADDR-${DATA_SEGMENT_ALIGN}};}}  ${CREATE_PIE+${RELOCATING+. = ${SHLIB_DATA_ADDR-${DATA_SEGMENT_ALIGN}};}}   /* Exception handling  */  .gcc_except_table ${RELOCATING-0} : ONLY_IF_RW { *(.gcc_except_table${RELOCATING+ .gcc_except_table.*}) }   /* 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} : { *(.preinit_array) }  ${RELOCATING+${CREATE_SHLIB-PROVIDE (__preinit_array_end = .);}}  ${RELOCATING+${INIT_ARRAY}}  ${RELOCATING+${FINI_ARRAY}}   .data         ${RELOCATING-0} :  {    ${RELOCATING+${DATA_START_SYMBOLS}}    *(.data${RELOCATING+ .data.* .gnu.linkonce.d.*})    ${CONSTRUCTING+SORT(CONSTRUCTORS)}  }  .data.init  ${RELOCATING-0} :  {    *(.data.init)  }  .data1        ${RELOCATING-0} : { *(.data1) }  .tdata	${RELOCATING-0} : { *(.tdata${RELOCATING+ .tdata.* .gnu.linkonce.td.*}) }  .tbss		${RELOCATING-0} : { *(.tbss${RELOCATING+ .tbss.* .gnu.linkonce.tb.*})${RELOCATING+ *(.tcommon)} }  .eh_frame     ${RELOCATING-0} : { KEEP (*(.eh_frame)) }  .gcc_except_table ${RELOCATING-0} : { *(.gcc_except_table) }  ${WRITABLE_RODATA+${RODATA}}  ${OTHER_READWRITE_SECTIONS}  ${TEXT_DYNAMIC-${DYNAMIC}}  ${RELOCATING+${CTOR}}  ${RELOCATING+${DTOR}}  .jcr          ${RELOCATING-0} : { KEEP (*(.jcr)) }  ${DATA_PLT+${PLT}}  ${RELOCATING+${OTHER_GOT_SYMBOLS}}  ${GOT}  ${OTHER_GOT_SECTIONS}  ${CREATE_SHLIB+${SDATA2}}  ${CREATE_SHLIB+${SBSS2}}  ${SDATA}  ${OTHER_SDATA_SECTIONS}  ${RELOCATING+_edata = .;}  ${RELOCATING+PROVIDE (edata = .);}  ${RELOCATING+. = ALIGN(ALIGNOF(NEXT_SECTION));}  ${RELOCATING+__bss_start = .;}  ${RELOCATING+${OTHER_BSS_SYMBOLS}}  ${SBSS}  ${BSS_PLT+${PLT}}  .bss          ${RELOCATING-0} :  {    ${RELOCATING+*(.dynbss)}    *(.bss${RELOCATING+ .bss.* .gnu.linkonce.b.*})    ${RELOCATING+*(COMMON)    /* Align here to ensure that the .bss section occupies space up to       _end.  Align after .bss to ensure correct alignment even if the       .bss section disappears because there are no input sections.  */    . = ALIGN(${ALIGNMENT});}  }  ${OTHER_BSS_SECTIONS}  ${RELOCATING+. = ALIGN(${ALIGNMENT});}  ${RELOCATING+_end = .;}  ${RELOCATING+${OTHER_BSS_END_SYMBOLS}}  ${RELOCATING+PROVIDE (end = .);}  ${RELOCATING+${DATA_SEGMENT_END}}EOF test -n "${RELOCATING}" && cat <<EOF  /* We want to be able to set a default stack / heap size in a dejagnu     board description file, but override it for selected test cases.     The options appear in the wrong order to do this with a single symbol -     ldflags comes after flags injected with per-file stanzas, and thus     the setting from ldflags prevails.  */  .heap :  {	__start_heap = . ;	. = . + (DEFINED(__HEAP_SIZE) ? __HEAP_SIZE : (DEFINED(__DEFAULT_HEAP_SIZE) ? __DEFAULT_HEAP_SIZE : 20k)) ;	__end_heap = . ;  }   . = ALIGN(0x8);  .stack :  {	__stack = . ;	. = . + (DEFINED(__STACK_SIZE) ? __STACK_SIZE : (DEFINED(__DEFAULT_STACK_SIZE) ? __DEFAULT_STACK_SIZE : 64k)) ;	__stack_top = . ;  }EOF source_sh $srcdir/scripttempl/misc-sections.scsource_sh $srcdir/scripttempl/DWARF.sc cat <<EOF  /* ARC Extension Sections */  .arcextmap	  0 : { *(.arcextmap.*) }   ${OTHER_SECTIONS}  ${RELOCATING+${OTHER_END_SYMBOLS}}  ${RELOCATING+${STACKNOTE}}}EOF

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