ld/emulparams/elf32bmipn32-defs.sh

   1 # If you change this file, please also look at files which source this one:
   2 # elf64bmip.sh elf64btsmip.sh elf32btsmipn32.sh elf32bmipn32.sh
   3
   4 # This is an ELF platform.
   5 SCRIPT_NAME=elf
   6
   7 # Handle both big- and little-ended 32-bit MIPS objects.
   8 ARCH=mips
   9 OUTPUT_FORMAT="elf32-bigmips"
  10 BIG_OUTPUT_FORMAT="elf32-bigmips"
  11 LITTLE_OUTPUT_FORMAT="elf32-littlemips"
  12
  13 TEMPLATE_NAME=elf32
  14 EXTRA_EM_FILE=mipself
  15
  16 case "$EMULATION_NAME" in
  17 elf32*n32*) ELFSIZE=32 ;;
  18 elf64*) ELFSIZE=64 ;;
  19 *) echo $0: unhandled emulation $EMULATION_NAME >&2; exit 1 ;;
  20 esac
  21
  22 if test `echo "$host" | sed -e s/64//` = `echo "$target" | sed -e s/64//`; then
  23   case " $EMULATION_LIBPATH " in
  24     *" ${EMULATION_NAME} "*)
  25       NATIVE=yes
  26       ;;
  27   esac
  28 fi
  29
  30 # Look for 64 bit target libraries in /lib64, /usr/lib64 etc., first.
  31 LIBPATH_SUFFIX=$ELFSIZE
  32
  33 GENERATE_SHLIB_SCRIPT=yes
  34 GENERATE_PIE_SCRIPT=yes
  35
  36 TEXT_START_ADDR=0x10000000
  37 MAXPAGESIZE="CONSTANT (MAXPAGESIZE)"
  38 ENTRY=__start
  39
  40 # Unlike most targets, the MIPS backend puts all dynamic relocations
  41 # in a single dynobj section, which it also calls ".rel.dyn".  It does
  42 # this so that it can easily sort all dynamic relocations before the
  43 # output section has been populated.
  44 OTHER_GOT_RELOC_SECTIONS="
  45   .rel.dyn      ${RELOCATING-0} : { *(.rel.dyn) }
  46 "
  47 # GOT-related settings.
  48 # If the output has a GOT section, there must be exactly 0x7ff0 bytes
  49 # between .got and _gp.  The ". = ." below stops the orphan code from
  50 # inserting other sections between the assignment to _gp and the start
  51 # of .got.
  52 OTHER_GOT_SYMBOLS='
  53   . = .;
  54   _gp = ALIGN(16) + 0x7ff0;
  55 '
  56 # .got.plt is only used for the PLT psABI extension.  It should not be
  57 # included in the .sdata block with .got, as there is no need to access
  58 # the section from _gp.  Note that the traditional:
  59 #
  60 #      . = .
  61 #      _gp = ALIGN (16) + 0x7ff0;
  62 #      .got : { *(.got.plt) *(.got) }
  63 #
  64 # would set _gp to the wrong value; _gp - 0x7ff0 must point to the start
  65 # of *(.got).
  66 GOT=".got          ${RELOCATING-0} : { *(.got) }"
  67 unset OTHER_READWRITE_SECTIONS
  68 unset OTHER_RELRO_SECTIONS
  69 if test -n "$RELRO_NOW"; then
  70   OTHER_RELRO_SECTIONS=".got.plt      ${RELOCATING-0} : { *(.got.plt) }"
  71 else
  72   OTHER_READWRITE_SECTIONS=".got.plt      ${RELOCATING-0} : { *(.got.plt) }"
  73 fi
  74
  75 OTHER_SDATA_SECTIONS="
  76   .lit8         ${RELOCATING-0} : { *(.lit8) }
  77   .lit4         ${RELOCATING-0} : { *(.lit4) }
  78   .srdata       ${RELOCATING-0} : { *(.srdata) }
  79 "
  80
  81 # Magic symbols.
  82 TEXT_START_SYMBOLS='_ftext = . ;'
  83 DATA_START_SYMBOLS='_fdata = . ;'
  84 OTHER_BSS_SYMBOLS='_fbss = .;'
  85
  86 INITIAL_READONLY_SECTIONS=
  87 if test -z "${CREATE_SHLIB}"; then
  88   INITIAL_READONLY_SECTIONS=".interp       ${RELOCATING-0} : { *(.interp) }"
  89 fi
  90 INITIAL_READONLY_SECTIONS="${INITIAL_READONLY_SECTIONS}
  91   .reginfo      ${RELOCATING-0} : { *(.reginfo) }"
  92 # Discard any .MIPS.content* or .MIPS.events* sections.  The linker
  93 # doesn't know how to adjust them.
  94 OTHER_SECTIONS="/DISCARD/ : { *(.MIPS.content*) *(.MIPS.events*) }"
  95
  96 TEXT_DYNAMIC=