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 # TEXT_START_SYMBOLS doesn't get what we want which is the start of
  19 # all read-only sections; there's at least .init and .fini before it.
  20 # We have to resort to trickery.
  21 #
  22 # The __start dance is to get us through assumptions about entry
  23 # symbols, and to clear _start for normal use with sane programs.
  24 EXECUTABLE_SYMBOLS='
  25 PROVIDE (__Stext = .);
  26 __start = DEFINED(__start) ? __start :
  27   DEFINED(_start) ? _start :
  28     DEFINED(start) ? start :
  29       DEFINED(.startup) ? .startup + 2 : 2;
  30 '
  31
  32 # Smuggle an "OTHER_TEXT_END_SYMBOLS" here.
  33 OTHER_READONLY_SECTIONS='PROVIDE (__Etext = .);'
  34 DATA_START_SYMBOLS='PROVIDE (__Sdata = .);'
  35
  36 # Smuggle an "OTHER_DATA_END_SYMBOLS" here.
  37 OTHER_GOT_SECTIONS='PROVIDE (__Edata = .);'
  38
  39 # If .bss does not immediately follow .data but has its own start
  40 # address, we can't get to it with OTHER_BSS_SYMBOLS, neither can we
  41 # use ADDR(.bss) there.  Instead, we use the symbol support for the
  42 # end symbol.
  43 OTHER_BSS_END_SYMBOLS='
  44  PROVIDE (__Ebss = .);
  45  PROVIDE (__end = .);
  46  __Sbss = SIZEOF (.sbss) != 0 ? ADDR (.sbss) : ADDR (.bss);
  47  PROVIDE (_bss_start = __Sbss);
  48 '
  49
  50 INIT_START='
  51  . = ALIGN(2);
  52  ___init__start = .;
  53  PROVIDE (___do_global_ctors = .);
  54  SHORT (0xe1fc); /* push srp */
  55  SHORT (0xbe7e);
  56 '
  57
  58 INIT_END='
  59  SHORT (0x0d3e); /* jump [sp+] */
  60  PROVIDE (__init__end = .);
  61  PROVIDE (___init__end = .);
  62 '
  63
  64 FINI_START='
  65  . = ALIGN (2);
  66  ___fini__start = .;
  67  PROVIDE (___do_global_dtors = .);
  68  SHORT (0xe1fc); /* push srp */
  69  SHORT (0xbe7e);
  70 '
  71
  72 FINI_END='
  73  SHORT (0x0d3e); /* jump [sp+] */
  74  PROVIDE (__fini__end = .);
  75  ___fini__end = .;
  76 '
  77
  78 CTOR_START='
  79  PROVIDE (___ctors = .);
  80  ___elf_ctors_dtors_begin = .;
  81 '
  82
  83 CTOR_END='
  84  PROVIDE (___ctors_end = .);
  85 '
  86
  87 DTOR_START='
  88  PROVIDE (___dtors = .);
  89 '
  90
  91 CTOR_END='
  92  PROVIDE (___dtors_end = .);
  93  ___elf_ctors_dtors_end = .;
  94 '
  95
  96
  97 # Smuggle an "OTHER_ALL_END_SYMBOLS" here.
  98 # Also add the other symbols provided for rsim/xsim and elinux.
  99 OTHER_RELOCATING_SECTIONS='
 100 PROVIDE (__Eall = .);
 101 PROVIDE (__Endmem = 0x10000000);
 102 PROVIDE (__Stacksize = 0);
 103 '