ld/emulparams/cskyelf.sh

   1 SCRIPT_NAME=elf
   2 OUTPUT_FORMAT="elf32-csky-little"
   3 BIG_OUTPUT_FORMAT="elf32-csky-big"
   4 LITTLE_OUTPUT_FORMAT="elf32-csky-little"
   5 NO_REL_RELOCS=yes
   6 TARGET_PAGE_SIZE=0x400
   7 MAXPAGESIZE="CONSTANT (MAXPAGESIZE)"
   8 TEXT_START_ADDR=0x60000000
   9 DATA_ADDR=0x20000000
  10
  11 # The default address spaces
  12 # RAM:        0x0 - 0x1FFFFFFF
  13 # RAM: 0x20000000 - 0x3FFFFFFF
  14 # RAM: 0x60000000 - 0x7FFFFFFF
  15 #
  16 # There are some symbols used in the crt.S
  17 # __stack: The stack top
  18 # __heap_start: The heap start
  19 # __heap_end: The heap end
  20 # __csky_exit: Be used by qemu to check exit
  21
  22 OTHER_SYMBOLS='
  23   PROVIDE (__stack =  0x01000000 - 0x8);
  24   PROVIDE (__heap_start = 0x00000100);
  25   PROVIDE (__heap_end = 0x00900000);
  26   PROVIDE (__csky_exit = 0x10002000);
  27 '
  28 CHECK_RELOCS_AFTER_OPEN_INPUT=yes
  29 NONPAGED_TEXT_START_ADDR=0
  30 ATTRS_SECTIONS='.csky.attributes 0 : { KEEP (*(.csky.attributes)) KEEP (*(.csky.attributes)) }'
  31 ARCH=csky
  32 EMBEDDED=yes
  33 EXTRA_EM_FILE=cskyelf
  34
  35 # There is a problem with the NOP value - it must work for both
  36 # big endian and little endian systems.  Unfortunately there is
  37 # no symmetrical mcore opcode that functions as a noop.  The
  38 # chosen solution is to use "tst r0, r14".  This is a symmetrical
  39 # value, and apart from the corruption of the C bit, it has no other
  40 # side effects.  Since the carry bit is never tested without being
  41 # explicitly set first, and since the NOP code is only used as a
  42 # fill value between independently viable pieces of code, it should
  43 # not matter.
  44 NOP=0
  45
  46 ENTRY=__start
  47 OTHER_BSS_SYMBOLS="__sbss__ = . ;"
  48 OTHER_BSS_END_SYMBOLS="__ebss__ = . ;"
  49
  50 # This sets the stack to the top of the simulator memory (2^19 bytes).
  51 # STACK_ADDR=0x80000
  52
  53 TEMPLATE_NAME=elf