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=
  17 if test -z "${CREATE_SHLIB}"; then
  18   INITIAL_READONLY_SECTIONS=".interp       ${RELOCATING-0} : { *(.interp) }"
  19 fi
  20 INITIAL_READONLY_SECTIONS="${INITIAL_READONLY_SECTIONS}
  21   .startup : { KEEP(*(.startup)) }"
  22
  23 # Setting __Stext to . in TEXT_START_SYMBOLS doesn't get what we want
  24 # most of the time, which is the start of all read-only sections;
  25 # there's at least .startup and .init before it.  We have to resort to
  26 # trickery.  Note that __Stext is always defined, not PROVIDE:d, since
  27 # external tools look for it.
  28 TEXT_START_SYMBOLS='__Stext = ADDR (.startup);'
  29
  30 # The __start dance is to get us through assumptions about entry
  31 # symbols, and to clear _start for normal use with sane programs.
  32 EXECUTABLE_SYMBOLS='
  33 __start = DEFINED(__start) ? __start :
  34   DEFINED(_start) ? _start :
  35     DEFINED(start) ? start :
  36       DEFINED(.startup) ? .startup + 2 : 2;
  37 '
  38
  39 # Smuggle an "OTHER_TEXT_END_SYMBOLS" here.
  40 OTHER_READONLY_SECTIONS="${RELOCATING+PROVIDE (__Etext = .);}"
  41 DATA_START_SYMBOLS='PROVIDE (__Sdata = .);'
  42
  43 # Smuggle an "OTHER_DATA_END_SYMBOLS" here.
  44 OTHER_SDATA_SECTIONS="${RELOCATING+PROVIDE (__Edata = .);}"
  45
  46 # If .bss does not immediately follow .data but has its own start
  47 # address, we can't get to it with OTHER_BSS_SYMBOLS, neither can we
  48 # use ADDR(.bss) there.  Instead, we use the symbol support for the
  49 # end symbol.
  50 OTHER_BSS_END_SYMBOLS='
  51  PROVIDE (__Ebss = .);
  52  __Sbss = ADDR (.bss);
  53  PROVIDE (_bss_start = __Sbss);
  54 '
  55 OTHER_END_SYMBOLS='PROVIDE (__end = .);'
  56
  57 INIT_START='
  58  . = ALIGN(2);
  59  ___init__start = .;
  60  PROVIDE (___do_global_ctors = .);
  61 '
  62
  63 INIT_END='
  64  PROVIDE (__init__end = .);
  65  PROVIDE (___init__end = .);
  66 '
  67
  68 FINI_START='
  69  . = ALIGN (2);
  70  ___fini__start = .;
  71  PROVIDE (___do_global_dtors = .);
  72 '
  73
  74 FINI_END='
  75  PROVIDE (__fini__end = .);
  76  ___fini__end = .;
  77 '
  78
  79 CTOR_START='
  80  PROVIDE (___ctors = .);
  81  ___elf_ctors_dtors_begin = .;
  82 '
  83
  84 CTOR_END='
  85  PROVIDE (___ctors_end = .);
  86 '
  87
  88 DTOR_START='
  89  PROVIDE (___dtors = .);
  90 '
  91
  92 CTOR_END='
  93  PROVIDE (___dtors_end = .);
  94  ___elf_ctors_dtors_end = .;
  95 '
  96
  97 # Also add the other symbols provided for rsim/xsim and elinux.
  98 OTHER_SYMBOLS='
  99   PROVIDE (__Eall = .);
 100   PROVIDE (__Endmem = 0x10000000);
 101   PROVIDE (__Stacksize = 0);
 102 '
 103 NO_SMALL_DATA=yes