ld/scripttempl/elf32sh-symbian.sc

   1 #
   2 # Unusual variables checked by this code:
   3 #       NOP - four byte opcode for no-op (defaults to 0)
   4 #       DATA_ADDR - if end-of-text-plus-one-page isn't right for data start
   5 #       INITIAL_READONLY_SECTIONS - at start of text segment
   6 #       OTHER_READONLY_SECTIONS - other than .text .init .rodata ...
   7 #               (e.g., .PARISC.milli)
   8 #       OTHER_TEXT_SECTIONS - these get put in .text when relocating
   9 #       OTHER_READWRITE_SECTIONS - other than .data .bss .ctors .sdata ...
  10 #               (e.g., .PARISC.global)
  11 #       ATTRS_SECTIONS - at the end
  12 #       OTHER_SECTIONS - at the end
  13 #       EXECUTABLE_SYMBOLS - symbols that must be defined for an
  14 #               executable (e.g., _DYNAMIC_LINK)
  15 #       TEXT_START_SYMBOLS - symbols that appear at the start of the
  16 #               .text section.
  17 #       DATA_START_SYMBOLS - symbols that appear at the start of the
  18 #               .data section.
  19 #       OTHER_GOT_SYMBOLS - symbols defined just before .got.
  20 #       OTHER_GOT_SECTIONS - sections just after .got.
  21 #       OTHER_SDATA_SECTIONS - sections just after .sdata.
  22 #       OTHER_BSS_SYMBOLS - symbols that appear at the start of the
  23 #               .bss section besides __bss_start.
  24 #       DATA_PLT - .plt should be in data segment, not text segment.
  25 #       BSS_PLT - .plt should be in bss segment
  26 #       TEXT_DYNAMIC - .dynamic in text segment, not data segment.
  27 #       EMBEDDED - whether this is for an embedded system.
  28 #       SHLIB_TEXT_START_ADDR - if set, add to SIZEOF_HEADERS to set
  29 #               start address of shared library.
  30 #       INPUT_FILES - INPUT command of files to always include
  31 #       WRITABLE_RODATA - if set, the .rodata section should be writable
  32 #       INIT_START, INIT_END -  statements just before and just after
  33 #       combination of .init sections.
  34 #       FINI_START, FINI_END - statements just before and just after
  35 #       combination of .fini sections.
  36 #       STACK_ADDR - start of a .stack section.
  37 #       OTHER_SYMBOLS - symbols to place right at the end of the script.
  38 #
  39 # When adding sections, do note that the names of some sections are used
  40 # when specifying the start address of the next.
  41 #
  42
  43 #  Many sections come in three flavours.  There is the 'real' section,
  44 #  like ".data".  Then there are the per-procedure or per-variable
  45 #  sections, generated by -ffunction-sections and -fdata-sections in GCC,
  46 #  and useful for --gc-sections, which for a variable "foo" might be
  47 #  ".data.foo".  Then there are the linkonce sections, for which the linker
  48 #  eliminates duplicates, which are named like ".gnu.linkonce.d.foo".
  49 #  The exact correspondences are:
  50 #
  51 #  Section      Linkonce section
  52 #  .text        .gnu.linkonce.t.foo
  53 #  .rodata      .gnu.linkonce.r.foo
  54 #  .data        .gnu.linkonce.d.foo
  55 #  .bss         .gnu.linkonce.b.foo
  56 #  .sdata       .gnu.linkonce.s.foo
  57 #  .sbss        .gnu.linkonce.sb.foo
  58 #  .sdata2      .gnu.linkonce.s2.foo
  59 #  .sbss2       .gnu.linkonce.sb2.foo
  60 #  .debug_info  .gnu.linkonce.wi.foo
  61 #  .tdata       .gnu.linkonce.td.foo
  62 #  .tbss        .gnu.linkonce.tb.foo
  63 #
  64 #  Each of these can also have corresponding .rel.* and .rela.* sections.
  65
  66 test -z "$ENTRY" && ENTRY=_start
  67 test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}
  68 test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}
  69 if [ -z "$MACHINE" ]; then OUTPUT_ARCH=${ARCH}; else OUTPUT_ARCH=${ARCH}:${MACHINE}; fi
  70 test -z "${ELFSIZE}" && ELFSIZE=32
  71 test -z "${ALIGNMENT}" && ALIGNMENT="${ELFSIZE} / 8"
  72 test "$LD_FLAG" = "N" && DATA_ADDR=.
  73 test -n "$CREATE_SHLIB$CREATE_PIE" && test -n "$SHLIB_DATA_ADDR" && COMMONPAGESIZE=""
  74 test -z "$CREATE_SHLIB$CREATE_PIE" && test -n "$DATA_ADDR" && COMMONPAGESIZE=""
  75 test -z "$ATTRS_SECTIONS" && ATTRS_SECTIONS=".gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }"
  76 DATA_SEGMENT_ALIGN="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))"
  77 DATA_SEGMENT_END=""
  78 if test -n "${COMMONPAGESIZE}"; then
  79   DATA_SEGMENT_ALIGN="ALIGN (${SEGMENT_SIZE}) - ((${MAXPAGESIZE} - .) & (${MAXPAGESIZE} - 1)); . = DATA_SEGMENT_ALIGN (${MAXPAGESIZE}, ${COMMONPAGESIZE})"
  80   DATA_SEGMENT_END=". = DATA_SEGMENT_END (.);"
  81 fi
  82  INTERP=".interp    ALIGN(4) : { *(.interp) }"
  83     PLT=".plt            : { *(.plt) } :dynamic :dyn"
  84 DYNAMIC=".dynamic        : { *(.dynamic) } :dynamic :dyn"
  85  RODATA=".rodata    ALIGN(4) : { *(.rodata${RELOCATING+ .rodata.* .gnu.linkonce.r.*}) }"
  86 STACKNOTE="/DISCARD/ : { *(.note.GNU-stack)  *(.directive) }"
  87 test -z "$GOT" && GOT=".got          ${RELOCATING-0} : { *(.got.plt) *(.got) } :dynamic :dyn"
  88 CTOR=".ctors     ALIGN(4) :
  89   {
  90     ${CONSTRUCTING+${CTOR_START}}
  91     /* gcc uses crtbegin.o to find the start of
  92        the constructors, so we make sure it is
  93        first.  Because this is a wildcard, it
  94        doesn't matter if the user does not
  95        actually link against crtbegin.o; the
  96        linker won't look for a file to match a
  97        wildcard.  The wildcard also means that it
  98        doesn't matter which directory crtbegin.o
  99        is in.  */
 100
 101     KEEP (*crtbegin.o(.ctors))
 102     KEEP (*crtbegin?.o(.ctors))
 103
 104     /* We don't want to include the .ctor section from
 105        the crtend.o file until after the sorted ctors.
 106        The .ctor section from the crtend file contains the
 107        end of ctors marker and it must be last */
 108
 109     KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o $OTHER_EXCLUDE_FILES) .ctors))
 110     KEEP (*(SORT(.ctors.*)))
 111     KEEP (*(.ctors))
 112     ${CONSTRUCTING+${CTOR_END}}
 113   } :text"
 114 DTOR=".dtors        ALIGN(4) :
 115   {
 116     ${CONSTRUCTING+${DTOR_START}}
 117     KEEP (*crtbegin.o(.dtors))
 118     KEEP (*crtbegin?.o(.dtors))
 119     KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o $OTHER_EXCLUDE_FILES) .dtors))
 120     KEEP (*(SORT(.dtors.*)))
 121     KEEP (*(.dtors))
 122     ${CONSTRUCTING+${DTOR_END}}
 123   } :text"
 124 STACK="  .stack        ${RELOCATING-0}${RELOCATING+${STACK_ADDR}} :
 125   {
 126     ${RELOCATING+_stack = .;}
 127     *(.stack)
 128   } :data"
 129
 130 # if this is for an embedded system, don't add SIZEOF_HEADERS.
 131 if [ -z "$EMBEDDED" ]; then
 132    test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR} + SIZEOF_HEADERS"
 133 else
 134    test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR}"
 135 fi
 136
 137 cat <<EOF
 138 OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}",
 139               "${LITTLE_OUTPUT_FORMAT}")
 140 OUTPUT_ARCH(${OUTPUT_ARCH})
 141 ENTRY(${ENTRY})
 142
 143 ${RELOCATING+${LIB_SEARCH_DIRS}}
 144 ${RELOCATING+/* Do we need any of these for elf?
 145    __DYNAMIC = 0; ${STACKZERO+${STACKZERO}} ${SHLIB_PATH+${SHLIB_PATH}}  */}
 146 ${RELOCATING+${EXECUTABLE_SYMBOLS}}
 147 ${RELOCATING+${INPUT_FILES}}
 148 ${RELOCATING- /* For some reason, the Solaris linker makes bad executables
 149   if gld -r is used and the intermediate file has sections starting
 150   at non-zero addresses.  Could be a Solaris ld bug, could be a GNU ld
 151   bug.  But for now assigning the zero vmas works.  */}
 152
 153 PHDRS
 154 {
 155   headers PT_PHDR PHDRS ;
 156   text    PT_LOAD ;
 157   data    PT_LOAD ;
 158   dyn     PT_LOAD FLAGS (0) ;
 159   dynamic PT_DYNAMIC ;
 160 }
 161
 162 SECTIONS
 163 {
 164   /* Read-only sections, merged into text segment: */
 165   ${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+. = ${TEXT_BASE_ADDRESS};}}}
 166   ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR:-0};}}
 167   ${CREATE_PIE+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR:-0};}}
 168   ${CREATE_SHLIB-${INTERP}}
 169
 170   ${INITIAL_READONLY_SECTIONS}
 171
 172   .init ALIGN(4) :
 173   {
 174     ${RELOCATING+${INIT_START}}
 175     KEEP (*(.init))
 176     ${RELOCATING+${INIT_END}}
 177   } :text =${NOP-0}
 178
 179   .text ALIGN(4) :
 180   {
 181     ${RELOCATING+${TEXT_START_SYMBOLS}}
 182     *(.text .stub${RELOCATING+ .text.* .gnu.linkonce.t.*})
 183     /* .gnu.warning sections are handled specially by elf32.em.  */
 184     *(.gnu.warning)
 185     ${RELOCATING+${OTHER_TEXT_SECTIONS}}
 186   } =${NOP-0}
 187
 188   ${RELOCATING+${CTOR}}
 189   ${RELOCATING+${DTOR}}
 190
 191   .fini ALIGN(4) :
 192   {
 193     ${RELOCATING+${FINI_START}}
 194     KEEP (*(.fini))
 195     ${RELOCATING+${FINI_END}}
 196   } =${NOP-0}
 197
 198   ${RELOCATING+PROVIDE (__etext = .);}
 199   ${RELOCATING+PROVIDE (_etext = .);}
 200   ${RELOCATING+PROVIDE (etext = .);}
 201
 202   ${WRITABLE_RODATA-${RODATA}}
 203   .rodata1 ALIGN(4) : { *(.rodata1) }
 204
 205   ExportTable  ALIGN(4) : { KEEP (*(ExportTable)) }
 206   .eh_frame_hdr ALIGN(4) : { *(.eh_frame_hdr) } :text
 207
 208   /* Adjust the address for the data segment.  We want to adjust up to
 209      the same address within the page on the next page up.  */
 210   . = ALIGN(128) + (. & (128 - 1));
 211   .preinit_array   ${RELOCATING-0} :
 212   {
 213     ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (__preinit_array_start = .);}}
 214     KEEP (*(.preinit_array))
 215     ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (__preinit_array_end = .);}}
 216   }
 217   .init_array   ${RELOCATING-0} :
 218   {
 219      ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (__init_array_start = .);}}
 220      KEEP (*(SORT(.init_array.*)))
 221      KEEP (*(.init_array))
 222      ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (__init_array_end = .);}}
 223   }
 224   .fini_array   ${RELOCATING-0} :
 225   {
 226     ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (__fini_array_start = .);}}
 227     KEEP (*(.fini_array))
 228     KEEP (*(SORT(.fini_array.*)))
 229     ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (__fini_array_end = .);}}
 230   }
 231
 232   ${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+. = ${DATA_ADDR-${DATA_SEGMENT_ALIGN}};}}}
 233   ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_DATA_ADDR-${DATA_SEGMENT_ALIGN}};}}
 234   ${CREATE_PIE+${RELOCATING+. = ${SHLIB_DATA_ADDR-${DATA_SEGMENT_ALIGN}};}}
 235
 236   .data  ALIGN(4) :
 237   {
 238     ${RELOCATING+${DATA_START_SYMBOLS}}
 239     *(.data${RELOCATING+ .data.* .gnu.linkonce.d.*})
 240     ${CONSTRUCTING+SORT(CONSTRUCTORS)}
 241   } :data
 242
 243   .data1            ALIGN(4) : { *(.data1) } :data
 244   .tdata            ALIGN(4) : { *(.tdata${RELOCATING+ .tdata.* .gnu.linkonce.td.*}) } :data
 245   .tbss             ALIGN(4) : { *(.tbss${RELOCATING+ .tbss.* .gnu.linkonce.tb.*})${RELOCATING+ *(.tcommon)} } :data
 246   .eh_frame         ALIGN(4) : { KEEP (*(.eh_frame)) } :data
 247   .gcc_except_table ALIGN(4) : { *(.gcc_except_table) } :data
 248   ${WRITABLE_RODATA+${RODATA}}
 249   ${OTHER_READWRITE_SECTIONS}
 250   ${SDATA}
 251   ${OTHER_SDATA_SECTIONS}
 252   ${RELOCATING+_edata = .;}
 253   ${RELOCATING+PROVIDE (edata = .);}
 254   ${RELOCATING+__bss_start = .;}
 255   ${RELOCATING+${OTHER_BSS_SYMBOLS}}
 256   ${BSS_PLT+${PLT}}
 257   .bss  ALIGN(4) :
 258   {
 259    *(.dynbss)
 260    *(.bss${RELOCATING+ .bss.* .gnu.linkonce.b.*})
 261    *(COMMON)
 262    /* Align here to ensure that the .bss section occupies space up to
 263       _end.  Align after .bss to ensure correct alignment even if the
 264       .bss section disappears because there are no input sections.  */
 265    ${RELOCATING+. = ALIGN(${ALIGNMENT});}
 266   } :data
 267   ${RELOCATING+${OTHER_BSS_END_SYMBOLS}}
 268   ${RELOCATING+. = ALIGN(${ALIGNMENT});}
 269   ${RELOCATING+${OTHER_END_SYMBOLS}}
 270   ${RELOCATING+_end = .;}
 271   ${RELOCATING+PROVIDE (end = .);}
 272   ${RELOCATING+${DATA_SEGMENT_END}}
 273
 274   ${TEXT_DYNAMIC-${DYNAMIC}}
 275   ${TEXT_DYNAMIC+${DYNAMIC}}
 276   .hash         ${RELOCATING-0} : { *(.hash) } :dynamic :dyn
 277   .dynsym       ${RELOCATING-0} : { *(.dynsym) } :dynamic :dyn
 278   .dynstr       ${RELOCATING-0} : { *(.dynstr) } :dynamic :dyn
 279   ${DATA_PLT-${BSS_PLT-${PLT}}}
 280   .got.plt        : { *(.got.plt) } :dynamic :dyn
 281   .gnu.version  ${RELOCATING-0} : { *(.gnu.version) }
 282   .gnu.version_d ${RELOCATING-0}: { *(.gnu.version_d) }
 283   .gnu.version_r ${RELOCATING-0}: { *(.gnu.version_r) }
 284 EOF
 285 if [ "x$COMBRELOC" = x ]; then
 286   COMBRELOCCAT=cat
 287 else
 288   COMBRELOCCAT="cat > $COMBRELOC"
 289 fi
 290 eval $COMBRELOCCAT <<EOF
 291   .rel.init     ${RELOCATING-0} : { *(.rel.init) }
 292   .rela.init    ${RELOCATING-0} : { *(.rela.init) }
 293   .rel.text     ${RELOCATING-0} : { *(.rel.text${RELOCATING+ .rel.text.* .rel.gnu.linkonce.t.*}) }
 294   .rela.text    ${RELOCATING-0} : { *(.rela.text${RELOCATING+ .rela.text.* .rela.gnu.linkonce.t.*}) }
 295   .rel.fini     ${RELOCATING-0} : { *(.rel.fini) }
 296   .rela.fini    ${RELOCATING-0} : { *(.rela.fini) }
 297   .rel.rodata   ${RELOCATING-0} : { *(.rel.rodata${RELOCATING+ .rel.rodata.* .rel.gnu.linkonce.r.*}) }
 298   .rela.rodata  ${RELOCATING-0} : { *(.rela.rodata${RELOCATING+ .rela.rodata.* .rela.gnu.linkonce.r.*}) }
 299   ${OTHER_READONLY_RELOC_SECTIONS}
 300   .rel.data     ${RELOCATING-0} : { *(.rel.data${RELOCATING+ .rel.data.* .rel.gnu.linkonce.d.*}) }
 301   .rela.data    ${RELOCATING-0} : { *(.rela.data${RELOCATING+ .rela.data.* .rela.gnu.linkonce.d.*}) }
 302   .rel.tdata    ${RELOCATING-0} : { *(.rel.tdata${RELOCATING+ .rel.tdata.* .rel.gnu.linkonce.td.*}) }
 303   .rela.tdata   ${RELOCATING-0} : { *(.rela.tdata${RELOCATING+ .rela.tdata.* .rela.gnu.linkonce.td.*}) }
 304   .rel.tbss     ${RELOCATING-0} : { *(.rel.tbss${RELOCATING+ .rel.tbss.* .rel.gnu.linkonce.tb.*}) }
 305   .rela.tbss    ${RELOCATING-0} : { *(.rela.tbss${RELOCATING+ .rela.tbss.* .rela.gnu.linkonce.tb.*}) }
 306   .rel.ctors    ${RELOCATING-0} : { *(.rel.ctors) }
 307   .rela.ctors   ${RELOCATING-0} : { *(.rela.ctors) }
 308   .rel.dtors    ${RELOCATING-0} : { *(.rel.dtors) }
 309   .rela.dtors   ${RELOCATING-0} : { *(.rela.dtors) }
 310   .rel.got      ${RELOCATING-0} : { *(.rel.got) }
 311   .rela.got     ${RELOCATING-0} : { *(.rela.got) }
 312   ${OTHER_GOT_RELOC_SECTIONS}
 313   .rel.bss      ${RELOCATING-0} : { *(.rel.bss${RELOCATING+ .rel.bss.* .rel.gnu.linkonce.b.*}) }
 314   .rela.bss     ${RELOCATING-0} : { *(.rela.bss${RELOCATING+ .rela.bss.* .rela.gnu.linkonce.b.*}) }
 315 EOF
 316 if [ -n "$COMBRELOC" ]; then
 317 cat <<EOF
 318   .rel.dyn      ${RELOCATING-0} :
 319     {
 320 EOF
 321 sed -e '/^[     ]*[{}][         ]*$/d;/:[       ]*$/d;/\.rela\./d;s/^.*: { *\(.*\)}$/      \1/' $COMBRELOC
 322 cat <<EOF
 323     }
 324   .rela.dyn     ${RELOCATING-0} :
 325     {
 326 EOF
 327 sed -e '/^[     ]*[{}][         ]*$/d;/:[       ]*$/d;/\.rel\./d;s/^.*: { *\(.*\)}/      \1/' $COMBRELOC
 328 cat <<EOF
 329     }
 330 EOF
 331 fi
 332 cat <<EOF
 333   .rel.plt      ${RELOCATING-0} : { *(.rel.plt) }
 334   .rela.plt     ${RELOCATING-0} : { *(.rela.plt) }
 335   ${OTHER_PLT_RELOC_SECTIONS}
 336
 337
 338   /* Stabs debugging sections.  */
 339   .stab          0 : { *(.stab) }
 340   .stabstr       0 : { *(.stabstr) }
 341   .stab.excl     0 : { *(.stab.excl) }
 342   .stab.exclstr  0 : { *(.stab.exclstr) }
 343   .stab.index    0 : { *(.stab.index) }
 344   .stab.indexstr 0 : { *(.stab.indexstr) }
 345
 346   .comment       0 : { *(.comment) }
 347
 348   /* DWARF debug sections.
 349      Symbols in the DWARF debugging sections are relative to the beginning
 350      of the section so we begin them at 0.  */
 351
 352   /* DWARF 1 */
 353   .debug          0 : { *(.debug) }
 354   .line           0 : { *(.line) }
 355
 356   /* GNU DWARF 1 extensions */
 357   .debug_srcinfo  0 : { *(.debug_srcinfo) }
 358   .debug_sfnames  0 : { *(.debug_sfnames) }
 359
 360   /* DWARF 1.1 and DWARF 2 */
 361   .debug_aranges  0 : { *(.debug_aranges) }
 362   .debug_pubnames 0 : { *(.debug_pubnames) }
 363
 364   /* DWARF 2 */
 365   .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
 366   .debug_abbrev   0 : { *(.debug_abbrev) }
 367   .debug_line     0 : { *(.debug_line) }
 368   .debug_frame    0 : { *(.debug_frame) }
 369   .debug_str      0 : { *(.debug_str) }
 370   .debug_loc      0 : { *(.debug_loc) }
 371   .debug_macinfo  0 : { *(.debug_macinfo) }
 372
 373   /* SGI/MIPS DWARF 2 extensions */
 374   .debug_weaknames 0 : { *(.debug_weaknames) }
 375   .debug_funcnames 0 : { *(.debug_funcnames) }
 376   .debug_typenames 0 : { *(.debug_typenames) }
 377   .debug_varnames  0 : { *(.debug_varnames) }
 378
 379   ${STACK_ADDR+${STACK}}
 380   ${ATTRS_SECTIONS}
 381   ${OTHER_SECTIONS}
 382   ${RELOCATING+${OTHER_SYMBOLS}}
 383   ${RELOCATING+${STACKNOTE}}
 384 }
 385 EOF