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 DISCARDED="/DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) *(.directive)  *(.gnu.lto_*) }"
  87 test -z "$GOT" && GOT=".got          ${RELOCATING-0} : { *(.got.plt) *(.got) } :dynamic :dyn"
  88 INIT_ARRAY=".init_array   ${RELOCATING-0} :
  89   {
  90      ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (__init_array_start = .);}}
  91      KEEP (*(SORT(.init_array.*)))
  92      KEEP (*(.init_array))
  93      ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (__init_array_end = .);}}
  94   }"
  95 FINI_ARRAY=".fini_array   ${RELOCATING-0} :
  96   {
  97     ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (__fini_array_start = .);}}
  98     KEEP (*(SORT(.fini_array.*)))
  99     KEEP (*(.fini_array))
 100     ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (__fini_array_end = .);}}
 101   }"
 102 CTOR=".ctors     ALIGN(4) :
 103   {
 104     ${CONSTRUCTING+${CTOR_START}}
 105     /* gcc uses crtbegin.o to find the start of
 106        the constructors, so we make sure it is
 107        first.  Because this is a wildcard, it
 108        doesn't matter if the user does not
 109        actually link against crtbegin.o; the
 110        linker won't look for a file to match a
 111        wildcard.  The wildcard also means that it
 112        doesn't matter which directory crtbegin.o
 113        is in.  */
 114
 115     KEEP (*crtbegin.o(.ctors))
 116     KEEP (*crtbegin?.o(.ctors))
 117
 118     /* We don't want to include the .ctor section from
 119        the crtend.o file until after the sorted ctors.
 120        The .ctor section from the crtend file contains the
 121        end of ctors marker and it must be last */
 122
 123     KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o $OTHER_EXCLUDE_FILES) .ctors))
 124     KEEP (*(SORT(.ctors.*)))
 125     KEEP (*(.ctors))
 126     ${CONSTRUCTING+${CTOR_END}}
 127   } :text"
 128 DTOR=".dtors        ALIGN(4) :
 129   {
 130     ${CONSTRUCTING+${DTOR_START}}
 131     KEEP (*crtbegin.o(.dtors))
 132     KEEP (*crtbegin?.o(.dtors))
 133     KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o $OTHER_EXCLUDE_FILES) .dtors))
 134     KEEP (*(SORT(.dtors.*)))
 135     KEEP (*(.dtors))
 136     ${CONSTRUCTING+${DTOR_END}}
 137   } :text"
 138 STACK="  .stack        ${RELOCATING-0}${RELOCATING+${STACK_ADDR}} :
 139   {
 140     ${RELOCATING+_stack = .;}
 141     *(.stack)
 142   } :data"
 143
 144 # if this is for an embedded system, don't add SIZEOF_HEADERS.
 145 if [ -z "$EMBEDDED" ]; then
 146    test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR} + SIZEOF_HEADERS"
 147 else
 148    test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR}"
 149 fi
 150
 151 cat <<EOF
 152 OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}",
 153               "${LITTLE_OUTPUT_FORMAT}")
 154 OUTPUT_ARCH(${OUTPUT_ARCH})
 155 ${RELOCATING+ENTRY(${ENTRY})}
 156
 157 ${RELOCATING+${LIB_SEARCH_DIRS}}
 158 ${RELOCATING+/* Do we need any of these for elf?
 159    __DYNAMIC = 0; ${STACKZERO+${STACKZERO}} ${SHLIB_PATH+${SHLIB_PATH}}  */}
 160 ${RELOCATING+${EXECUTABLE_SYMBOLS}}
 161 ${RELOCATING+${INPUT_FILES}}
 162 ${RELOCATING- /* For some reason, the Solaris linker makes bad executables
 163   if gld -r is used and the intermediate file has sections starting
 164   at non-zero addresses.  Could be a Solaris ld bug, could be a GNU ld
 165   bug.  But for now assigning the zero vmas works.  */}
 166
 167 PHDRS
 168 {
 169   headers PT_PHDR PHDRS ;
 170   text    PT_LOAD ;
 171   data    PT_LOAD ;
 172   dyn     PT_LOAD FLAGS (0) ;
 173   dynamic PT_DYNAMIC ;
 174 }
 175
 176 SECTIONS
 177 {
 178   /* Read-only sections, merged into text segment: */
 179   ${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+. = ${TEXT_BASE_ADDRESS};}}}
 180   ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR:-0};}}
 181   ${CREATE_PIE+${RELOCATING+. = ${SHLIB_TEXT_START_ADDR:-0};}}
 182   ${CREATE_SHLIB-${INTERP}}
 183
 184   ${INITIAL_READONLY_SECTIONS}
 185
 186   .init ALIGN(4) :
 187   {
 188     ${RELOCATING+${INIT_START}}
 189     KEEP (*(.init))
 190     ${RELOCATING+${INIT_END}}
 191   } :text =${NOP-0}
 192
 193   .text ALIGN(4) :
 194   {
 195     ${RELOCATING+${TEXT_START_SYMBOLS}}
 196     *(.text .stub${RELOCATING+ .text.* .gnu.linkonce.t.*})
 197     /* .gnu.warning sections are handled specially by elf32.em.  */
 198     *(.gnu.warning)
 199     ${RELOCATING+${OTHER_TEXT_SECTIONS}}
 200   } =${NOP-0}
 201
 202   ${RELOCATING+${CTOR}}
 203   ${RELOCATING+${DTOR}}
 204
 205   .fini ALIGN(4) :
 206   {
 207     ${RELOCATING+${FINI_START}}
 208     KEEP (*(.fini))
 209     ${RELOCATING+${FINI_END}}
 210   } =${NOP-0}
 211
 212   ${RELOCATING+PROVIDE (__etext = .);}
 213   ${RELOCATING+PROVIDE (_etext = .);}
 214   ${RELOCATING+PROVIDE (etext = .);}
 215
 216   ${WRITABLE_RODATA-${RODATA}}
 217   .rodata1 ALIGN(4) : { *(.rodata1) }
 218
 219   ExportTable  ALIGN(4) : { KEEP (*(ExportTable)) }
 220   .eh_frame_hdr ALIGN(4) : { *(.eh_frame_hdr) } :text
 221
 222   /* Adjust the address for the data segment.  We want to adjust up to
 223      the same address within the page on the next page up.  */
 224   . = ALIGN(128) + (. & (128 - 1));
 225   .preinit_array   ${RELOCATING-0} :
 226   {
 227     ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (__preinit_array_start = .);}}
 228     KEEP (*(.preinit_array))
 229     ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (__preinit_array_end = .);}}
 230   }
 231   ${RELOCATING+${INIT_ARRAY}}
 232   ${RELOCATING+${FINI_ARRAY}}
 233
 234   ${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+. = ${DATA_ADDR-${DATA_SEGMENT_ALIGN}};}}}
 235   ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_DATA_ADDR-${DATA_SEGMENT_ALIGN}};}}
 236   ${CREATE_PIE+${RELOCATING+. = ${SHLIB_DATA_ADDR-${DATA_SEGMENT_ALIGN}};}}
 237
 238   .data  ALIGN(4) :
 239   {
 240     ${RELOCATING+${DATA_START_SYMBOLS}}
 241     *(.data${RELOCATING+ .data.* .gnu.linkonce.d.*})
 242     ${CONSTRUCTING+SORT(CONSTRUCTORS)}
 243   } :data
 244
 245   .data1            ALIGN(4) : { *(.data1) } :data
 246   .tdata            ALIGN(4) : { *(.tdata${RELOCATING+ .tdata.* .gnu.linkonce.td.*}) } :data
 247   .tbss             ALIGN(4) : { *(.tbss${RELOCATING+ .tbss.* .gnu.linkonce.tb.*})${RELOCATING+ *(.tcommon)} } :data
 248   .eh_frame         ALIGN(4) : { KEEP (*(.eh_frame)) } :data
 249   .gcc_except_table ALIGN(4) : { *(.gcc_except_table) } :data
 250   ${WRITABLE_RODATA+${RODATA}}
 251   ${OTHER_READWRITE_SECTIONS}
 252   ${SDATA}
 253   ${OTHER_SDATA_SECTIONS}
 254   ${RELOCATING+_edata = .;}
 255   ${RELOCATING+PROVIDE (edata = .);}
 256   ${RELOCATING+__bss_start = .;}
 257   ${RELOCATING+${OTHER_BSS_SYMBOLS}}
 258   ${BSS_PLT+${PLT}}
 259   .bss  ALIGN(4) :
 260   {
 261    *(.dynbss)
 262    *(.bss${RELOCATING+ .bss.* .gnu.linkonce.b.*})
 263    *(COMMON)
 264    /* Align here to ensure that the .bss section occupies space up to
 265       _end.  Align after .bss to ensure correct alignment even if the
 266       .bss section disappears because there are no input sections.  */
 267    ${RELOCATING+. = ALIGN(${ALIGNMENT});}
 268   } :data
 269   ${RELOCATING+${OTHER_BSS_END_SYMBOLS}}
 270   ${RELOCATING+. = ALIGN(${ALIGNMENT});}
 271   ${RELOCATING+${OTHER_END_SYMBOLS}}
 272   ${RELOCATING+_end = .;}
 273   ${RELOCATING+PROVIDE (end = .);}
 274   ${RELOCATING+${DATA_SEGMENT_END}}
 275
 276   ${TEXT_DYNAMIC-${DYNAMIC}}
 277   ${TEXT_DYNAMIC+${DYNAMIC}}
 278   .hash         ${RELOCATING-0} : { *(.hash) } :dynamic :dyn
 279   .dynsym       ${RELOCATING-0} : { *(.dynsym) } :dynamic :dyn
 280   .dynstr       ${RELOCATING-0} : { *(.dynstr) } :dynamic :dyn
 281   ${DATA_PLT-${BSS_PLT-${PLT}}}
 282   .got.plt        : { *(.got.plt) } :dynamic :dyn
 283   .gnu.version  ${RELOCATING-0} : { *(.gnu.version) }
 284   .gnu.version_d ${RELOCATING-0}: { *(.gnu.version_d) }
 285   .gnu.version_r ${RELOCATING-0}: { *(.gnu.version_r) }
 286 EOF
 287 if [ "x$COMBRELOC" = x ]; then
 288   COMBRELOCCAT=cat
 289 else
 290   COMBRELOCCAT="cat > $COMBRELOC"
 291 fi
 292 eval $COMBRELOCCAT <<EOF
 293   .rel.init     ${RELOCATING-0} : { *(.rel.init) }
 294   .rela.init    ${RELOCATING-0} : { *(.rela.init) }
 295   .rel.text     ${RELOCATING-0} : { *(.rel.text${RELOCATING+ .rel.text.* .rel.gnu.linkonce.t.*}) }
 296   .rela.text    ${RELOCATING-0} : { *(.rela.text${RELOCATING+ .rela.text.* .rela.gnu.linkonce.t.*}) }
 297   .rel.fini     ${RELOCATING-0} : { *(.rel.fini) }
 298   .rela.fini    ${RELOCATING-0} : { *(.rela.fini) }
 299   .rel.rodata   ${RELOCATING-0} : { *(.rel.rodata${RELOCATING+ .rel.rodata.* .rel.gnu.linkonce.r.*}) }
 300   .rela.rodata  ${RELOCATING-0} : { *(.rela.rodata${RELOCATING+ .rela.rodata.* .rela.gnu.linkonce.r.*}) }
 301   ${OTHER_READONLY_RELOC_SECTIONS}
 302   .rel.data     ${RELOCATING-0} : { *(.rel.data${RELOCATING+ .rel.data.* .rel.gnu.linkonce.d.*}) }
 303   .rela.data    ${RELOCATING-0} : { *(.rela.data${RELOCATING+ .rela.data.* .rela.gnu.linkonce.d.*}) }
 304   .rel.tdata    ${RELOCATING-0} : { *(.rel.tdata${RELOCATING+ .rel.tdata.* .rel.gnu.linkonce.td.*}) }
 305   .rela.tdata   ${RELOCATING-0} : { *(.rela.tdata${RELOCATING+ .rela.tdata.* .rela.gnu.linkonce.td.*}) }
 306   .rel.tbss     ${RELOCATING-0} : { *(.rel.tbss${RELOCATING+ .rel.tbss.* .rel.gnu.linkonce.tb.*}) }
 307   .rela.tbss    ${RELOCATING-0} : { *(.rela.tbss${RELOCATING+ .rela.tbss.* .rela.gnu.linkonce.tb.*}) }
 308   .rel.ctors    ${RELOCATING-0} : { *(.rel.ctors) }
 309   .rela.ctors   ${RELOCATING-0} : { *(.rela.ctors) }
 310   .rel.dtors    ${RELOCATING-0} : { *(.rel.dtors) }
 311   .rela.dtors   ${RELOCATING-0} : { *(.rela.dtors) }
 312   .rel.got      ${RELOCATING-0} : { *(.rel.got) }
 313   .rela.got     ${RELOCATING-0} : { *(.rela.got) }
 314   ${OTHER_GOT_RELOC_SECTIONS}
 315   .rel.bss      ${RELOCATING-0} : { *(.rel.bss${RELOCATING+ .rel.bss.* .rel.gnu.linkonce.b.*}) }
 316   .rela.bss     ${RELOCATING-0} : { *(.rela.bss${RELOCATING+ .rela.bss.* .rela.gnu.linkonce.b.*}) }
 317 EOF
 318 if [ -n "$COMBRELOC" ]; then
 319 cat <<EOF
 320   .rel.dyn      ${RELOCATING-0} :
 321     {
 322 EOF
 323 sed -e '/^[     ]*[{}][         ]*$/d;/:[       ]*$/d;/\.rela\./d;s/^.*: { *\(.*\)}$/      \1/' $COMBRELOC
 324 cat <<EOF
 325     }
 326   .rela.dyn     ${RELOCATING-0} :
 327     {
 328 EOF
 329 sed -e '/^[     ]*[{}][         ]*$/d;/:[       ]*$/d;/\.rel\./d;s/^.*: { *\(.*\)}/      \1/' $COMBRELOC
 330 cat <<EOF
 331     }
 332 EOF
 333 fi
 334 cat <<EOF
 335   .rel.plt      ${RELOCATING-0} : { *(.rel.plt) }
 336   .rela.plt     ${RELOCATING-0} : { *(.rela.plt) }
 337   ${OTHER_PLT_RELOC_SECTIONS}
 338
 339
 340   /* Stabs debugging sections.  */
 341   .stab          0 : { *(.stab) }
 342   .stabstr       0 : { *(.stabstr) }
 343   .stab.excl     0 : { *(.stab.excl) }
 344   .stab.exclstr  0 : { *(.stab.exclstr) }
 345   .stab.index    0 : { *(.stab.index) }
 346   .stab.indexstr 0 : { *(.stab.indexstr) }
 347
 348   .comment       0 : { *(.comment) }
 349
 350   /* DWARF debug sections.
 351      Symbols in the DWARF debugging sections are relative to the beginning
 352      of the section so we begin them at 0.  */
 353
 354   /* DWARF 1 */
 355   .debug          0 : { *(.debug) }
 356   .line           0 : { *(.line) }
 357
 358   /* GNU DWARF 1 extensions */
 359   .debug_srcinfo  0 : { *(.debug_srcinfo) }
 360   .debug_sfnames  0 : { *(.debug_sfnames) }
 361
 362   /* DWARF 1.1 and DWARF 2 */
 363   .debug_aranges  0 : { *(.debug_aranges) }
 364   .debug_pubnames 0 : { *(.debug_pubnames) }
 365
 366   /* DWARF 2 */
 367   .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
 368   .debug_abbrev   0 : { *(.debug_abbrev) }
 369   .debug_line     0 : { *(.debug_line) }
 370   .debug_frame    0 : { *(.debug_frame) }
 371   .debug_str      0 : { *(.debug_str) }
 372   .debug_loc      0 : { *(.debug_loc) }
 373   .debug_macinfo  0 : { *(.debug_macinfo) }
 374
 375   /* SGI/MIPS DWARF 2 extensions */
 376   .debug_weaknames 0 : { *(.debug_weaknames) }
 377   .debug_funcnames 0 : { *(.debug_funcnames) }
 378   .debug_typenames 0 : { *(.debug_typenames) }
 379   .debug_varnames  0 : { *(.debug_varnames) }
 380
 381   ${STACK_ADDR+${STACK}}
 382   ${ATTRS_SECTIONS}
 383   ${OTHER_SECTIONS}
 384   ${RELOCATING+${OTHER_SYMBOLS}}
 385   ${RELOCATING+${DISCARDED}}
 386 }
 387 EOF