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 ARCH=cris
   9 MAXPAGESIZE=32
  10 ENTRY=__start
  11 EMBEDDED=yes
  12 ALIGNMENT=32
  13 TEXT_START_ADDR=0
  14
  15 # Put crt0 for flash/eprom etc. in this section.
  16 INITIAL_READONLY_SECTIONS='.startup : { KEEP(*(.startup)) }'
  17
  18 # Setting __Stext to . in TEXT_START_SYMBOLS doesn't get what we want
  19 # most of the time, which is the start of all read-only sections;
  20 # there's at least .startup and .init before it.  We have to resort to
  21 # trickery.  Note that __Stext is always defined, not PROVIDE:d, since
  22 # external tools look for it.
  23 TEXT_START_SYMBOLS='__Stext = ADDR (.startup);'
  24
  25 # The __start dance is to get us through assumptions about entry
  26 # symbols, and to clear _start for normal use with sane programs.
  27 EXECUTABLE_SYMBOLS='
  28 __start = DEFINED(__start) ? __start :
  29   DEFINED(_start) ? _start :
  30     DEFINED(start) ? start :
  31       DEFINED(.startup) ? .startup + 2 : 2;
  32 '
  33
  34 # Smuggle an "OTHER_TEXT_END_SYMBOLS" here.
  35 OTHER_READONLY_SECTIONS="${RELOCATING+PROVIDE (__Etext = .);}"
  36 DATA_START_SYMBOLS='PROVIDE (__Sdata = .);'
  37
  38 # Smuggle an "OTHER_DATA_END_SYMBOLS" here.
  39 OTHER_SDATA_SECTIONS="${RELOCATING+PROVIDE (__Edata = .);}"
  40
  41 # If .bss does not immediately follow .data but has its own start
  42 # address, we can't get to it with OTHER_BSS_SYMBOLS, neither can we
  43 # use ADDR(.bss) there.  Instead, we use the symbol support for the
  44 # end symbol.
  45 OTHER_BSS_END_SYMBOLS='
  46  PROVIDE (__Ebss = .);
  47  __Sbss = ADDR (.bss);
  48  PROVIDE (_bss_start = __Sbss);
  49 '
  50 OTHER_END_SYMBOLS='PROVIDE (__end = .);'
  51
  52 INIT_START='
  53  . = ALIGN(2);
  54  ___init__start = .;
  55  PROVIDE (___do_global_ctors = .);
  56 '
  57
  58 INIT_END='
  59  PROVIDE (__init__end = .);
  60  PROVIDE (___init__end = .);
  61 '
  62
  63 FINI_START='
  64  . = ALIGN (2);
  65  ___fini__start = .;
  66  PROVIDE (___do_global_dtors = .);
  67 '
  68
  69 FINI_END='
  70  PROVIDE (__fini__end = .);
  71  ___fini__end = .;
  72 '
  73
  74 CTOR_START='
  75  PROVIDE (___ctors = .);
  76  ___elf_ctors_dtors_begin = .;
  77 '
  78
  79 CTOR_END='
  80  PROVIDE (___ctors_end = .);
  81 '
  82
  83 DTOR_START='
  84  PROVIDE (___dtors = .);
  85 '
  86
  87 CTOR_END='
  88  PROVIDE (___dtors_end = .);
  89  ___elf_ctors_dtors_end = .;
  90 '
  91
  92 # Also add the other symbols provided for rsim/xsim and elinux.
  93 OTHER_SYMBOLS='
  94   PROVIDE (__Eall = .);
  95   PROVIDE (__Endmem = 0x10000000);
  96   PROVIDE (__Stacksize = 0);
  97 '
  98 NO_SMALL_DATA=yes