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  PROVIDE (__end = .);
  48  __Sbss = ADDR (.bss);
  49  PROVIDE (_bss_start = __Sbss);
  50 '
  51
  52 INIT_START='
  53  . = ALIGN(2);
  54  ___init__start = .;
  55  PROVIDE (___do_global_ctors = .);
  56  SHORT (0xe1fc); /* push srp */
  57  SHORT (0xbe7e);
  58 '
  59
  60 INIT_END='
  61  SHORT (0x0d3e); /* jump [sp+] */
  62  PROVIDE (__init__end = .);
  63  PROVIDE (___init__end = .);
  64 '
  65
  66 FINI_START='
  67  . = ALIGN (2);
  68  ___fini__start = .;
  69  PROVIDE (___do_global_dtors = .);
  70  SHORT (0xe1fc); /* push srp */
  71  SHORT (0xbe7e);
  72 '
  73
  74 FINI_END='
  75  SHORT (0x0d3e); /* jump [sp+] */
  76  PROVIDE (__fini__end = .);
  77  ___fini__end = .;
  78 '
  79
  80 CTOR_START='
  81  PROVIDE (___ctors = .);
  82  ___elf_ctors_dtors_begin = .;
  83 '
  84
  85 CTOR_END='
  86  PROVIDE (___ctors_end = .);
  87 '
  88
  89 DTOR_START='
  90  PROVIDE (___dtors = .);
  91 '
  92
  93 CTOR_END='
  94  PROVIDE (___dtors_end = .);
  95  ___elf_ctors_dtors_end = .;
  96 '
  97
  98 # Also add the other symbols provided for rsim/xsim and elinux.
  99 OTHER_END_SYMBOLS='
 100   PROVIDE (__Eall = .);
 101   PROVIDE (__Endmem = 0x10000000);
 102   PROVIDE (__Stacksize = 0);
 103 '
 104 NO_SMALL_DATA=yes