ld/emulparams/criself.sh

   1 # This is for embedded products (no MMU) with ELF.
   2 MACHINE=
   3 SCRIPT_NAME=elf
   4 TEMPLATE_NAME=elf32
   5
   6 # Symbols have underscore prepended.
   7 OUTPUT_FORMAT="elf32-us-cris"
   8 NO_REL_RELOCS=yes
   9 ARCH=cris
  10 MAXPAGESIZE=32
  11 USER_LABEL_PREFIX=_
  12 EMBEDDED=yes
  13 ALIGNMENT=32
  14 TEXT_START_ADDR=0
  15
  16 # Put crt0 for flash/eprom etc. in this section.
  17 INITIAL_READONLY_SECTIONS=
  18 if test -z "${CREATE_SHLIB}"; then
  19   INITIAL_READONLY_SECTIONS=".interp       ${RELOCATING-0} : { *(.interp) }"
  20 fi
  21 INITIAL_READONLY_SECTIONS="${INITIAL_READONLY_SECTIONS}
  22   .startup : { KEEP(*(.startup)) }"
  23
  24 # Setting __Stext to . in TEXT_START_SYMBOLS doesn't get what we want
  25 # most of the time, which is the start of all read-only sections;
  26 # there's at least .startup and .init before it.  We have to resort to
  27 # trickery.  Note that __Stext is always defined, not PROVIDE:d, since
  28 # external tools look for it.
  29 TEXT_START_SYMBOLS='__Stext = ADDR (.startup);'
  30
  31 # The __start dance is to get us through assumptions about entry
  32 # symbols, and to clear _start for normal use with sane programs.
  33 EXECUTABLE_SYMBOLS='
  34 __start = DEFINED(__start) ? __start :
  35   DEFINED(_start) ? _start :
  36     DEFINED(start) ? start :
  37       DEFINED(.startup) ? .startup + 2 : 2;
  38 '
  39
  40 # Smuggle an "OTHER_TEXT_END_SYMBOLS" here.
  41 OTHER_READONLY_SECTIONS="${RELOCATING+PROVIDE (__Etext = .);}"
  42 DATA_START_SYMBOLS='PROVIDE (__Sdata = .);'
  43
  44 # Smuggle an "OTHER_DATA_END_SYMBOLS" here.
  45 OTHER_SDATA_SECTIONS="${RELOCATING+PROVIDE (__Edata = .);}"
  46
  47 # If .bss does not immediately follow .data but has its own start
  48 # address, we can't get to it with OTHER_BSS_SYMBOLS, neither can we
  49 # use ADDR(.bss) there.  Instead, we use the symbol support for the
  50 # end symbol.
  51 OTHER_BSS_END_SYMBOLS='
  52  PROVIDE (__Ebss = .);
  53  __Sbss = ADDR (.bss);
  54  PROVIDE (_bss_start = __Sbss);
  55 '
  56
  57 INIT_ADDR='ALIGN (2)'
  58
  59 INIT_START='
  60  ___init__start = .;
  61  PROVIDE (___do_global_ctors = .);
  62 '
  63
  64 INIT_END='
  65  PROVIDE (__init__end = .);
  66  PROVIDE (___init__end = .);
  67 '
  68
  69 FINI_ADDR='ALIGN (2)'
  70
  71 FINI_START='
  72  ___fini__start = .;
  73  PROVIDE (___do_global_dtors = .);
  74 '
  75
  76 FINI_END='
  77  PROVIDE (__fini__end = .);
  78  ___fini__end = .;
  79 '
  80
  81 CTOR_START='
  82  PROVIDE (___ctors = .);
  83  ___elf_ctors_dtors_begin = .;
  84 '
  85
  86 CTOR_END='
  87  PROVIDE (___ctors_end = .);
  88 '
  89
  90 DTOR_START='
  91  PROVIDE (___dtors = .);
  92 '
  93
  94 CTOR_END='
  95  PROVIDE (___dtors_end = .);
  96  ___elf_ctors_dtors_end = .;
  97 '
  98
  99 # Also add the other symbols provided for rsim/xsim and elinux.
 100 OTHER_SYMBOLS='
 101   PROVIDE (__Eall = .);
 102   PROVIDE (__Endmem = 0x10000000);
 103   PROVIDE (__Stacksize = 0);
 104 '
 105 NO_SMALL_DATA=yes