ld/scripttempl/elf32cr16c.sc

   1 # Linker Script for National Semiconductor's CR16C-ELF32.
   2
   3 test -z "$ENTRY" && ENTRY=_start
   4 cat <<EOF
   5
   6 /* Example Linker Script for linking NS CR16C or CR16CPlus
   7    elf32 files, which were compiled with either the near data
   8    model or the default data model.  */
   9
  10 /* Force the entry point to be entered in the output file as
  11    an undefined symbol. This is needed in case the entry point
  12    (which is not called explicitly) is in an archive (which is
  13    the usual case).  */
  14
  15 EXTERN(${ENTRY})
  16
  17 ENTRY(${ENTRY})
  18
  19 MEMORY
  20 {
  21   near_rom  : ORIGIN = 0x4,     LENGTH = 512K - 4
  22   near_ram  : ORIGIN = 512K,    LENGTH = 512K - 64K
  23   rom       : ORIGIN = 1M,      LENGTH = 3M
  24   ram       : ORIGIN = 4M,      LENGTH = 10M
  25 }
  26
  27 SECTIONS
  28 {
  29 /* The heap is located in near memory, to suit both the near and
  30    default data models.  The heap and stack are aligned to the bus
  31    width, as a speed optimization for accessing  data located
  32    there. The alignment to 4 bytes is compatible for both the CR16C
  33    bus width (2 bytes) and CR16CPlus bus width (4 bytes).  */
  34
  35   .text          : { __TEXT_START = .;   *(.text)                                        __TEXT_END = .; } > rom
  36   .rdata         : { __RDATA_START = .;  *(.rdata_4) *(.rdata_2) *(.rdata_1)             __RDATA_END = .; } > near_rom
  37   .ctor ALIGN(4) : { __CTOR_LIST = .;    *(.ctors)                                       __CTOR_END = .; } > near_rom
  38   .dtor ALIGN(4) : { __DTOR_LIST = .;    *(.dtors)                                       __DTOR_END = .; } > near_rom
  39   .data          : { __DATA_START = .;   *(.data_4) *(.data_2) *(.data_1) *(.data)       __DATA_END = .; } > ram AT > rom
  40   .bss (NOLOAD)  : { __BSS_START = .;    *(.bss_4) *(.bss_2) *(.bss_1) *(.bss) *(COMMON) __BSS_END = .; } > ram
  41   .nrdata        : { __NRDATA_START = .; *(.nrdat_4) *(.nrdat_2) *(.nrdat_1)             __NRDATA_END =  .; } > near_rom
  42   .ndata         : { __NDATA_START = .;  *(.ndata_4) *(.ndata_2) *(.ndata_1)             __NDATA_END = .; } > near_ram AT > rom
  43   .nbss (NOLOAD) : { __NBSS_START = .;   *(.nbss_4) *(.nbss_2) *(.nbss_1) *(.ncommon)    __NBSS_END = .; } > near_ram
  44   .heap          : { . = ALIGN(4); __HEAP_START = .; . += 0x2000;                        __HEAP_MAX = .; } > near_ram
  45   .stack         : { . = ALIGN(4); . += 0x6000; __STACK_START = .; } > ram
  46   .istack        : { . = ALIGN(2); . += 0x100; __ISTACK_START = .; } > ram
  47 }
  48
  49 __DATA_IMAGE_START = LOADADDR(.data);
  50 __NDATA_IMAGE_START = LOADADDR(.ndata);
  51
  52 EOF