ld/scripttempl/elf32cr16c.sc

   1 # Linker Script for National Semiconductor's CR16C-ELF32.
   2 #
   3 # Copyright (C) 2014-2019 Free Software Foundation, Inc.
   4 #
   5 # Copying and distribution of this file, with or without modification,
   6 # are permitted in any medium without royalty provided the copyright
   7 # notice and this notice are preserved.
   8
   9 # Using an empty script for ld -r is better than mashing together
  10 # sections.  This hack likely leaves ld -Ur broken.
  11 test -n "${RELOCATING}" || exit 0
  12
  13 test -z "$ENTRY" && ENTRY=_start
  14 cat <<EOF
  15
  16 /* Example Linker Script for linking NS CR16C or CR16CPlus
  17    elf32 files, which were compiled with either the near data
  18    model or the default data model.
  19
  20    Copyright (C) 2014-2019 Free Software Foundation, Inc.
  21
  22    Copying and distribution of this script, with or without modification,
  23    are permitted in any medium without royalty provided the copyright
  24    notice and this notice are preserved.  */
  25
  26 EOF
  27 test -n "${RELOCATING}" && cat <<EOF
  28 ENTRY(${ENTRY})
  29
  30 MEMORY
  31 {
  32   near_rom  : ORIGIN = 0x4,     LENGTH = 512K - 4
  33   near_ram  : ORIGIN = 512K,    LENGTH = 512K - 64K
  34   rom       : ORIGIN = 1M,      LENGTH = 3M
  35   ram       : ORIGIN = 4M,      LENGTH = 10M
  36 }
  37
  38 EOF
  39
  40 cat <<EOF
  41 SECTIONS
  42 {
  43 /* The heap is located in near memory, to suit both the near and
  44    default data models.  The heap and stack are aligned to the bus
  45    width, as a speed optimization for accessing  data located
  46    there. The alignment to 4 bytes is compatible for both the CR16C
  47    bus width (2 bytes) and CR16CPlus bus width (4 bytes).  */
  48
  49   .text            : { __TEXT_START = .;   *(.text)                                        __TEXT_END = .; }${RELOCATING+ > rom}
  50   .rdata           : { __RDATA_START = .;  *(.rdata_4) *(.rdata_2) *(.rdata_1)             __RDATA_END = .; }${RELOCATING+ > near_rom}
  51   .ctor ALIGN(4)   : { __CTOR_LIST = .;    *(.ctors)                                       __CTOR_END = .; }${RELOCATING+ > near_rom}
  52   .dtor ALIGN(4)   : { __DTOR_LIST = .;    *(.dtors)                                       __DTOR_END = .; }${RELOCATING+ > near_rom}
  53   .data            : { __DATA_START = .;   *(.data_4) *(.data_2) *(.data_1) *(.data)       __DATA_END = .; }${RELOCATING+ > ram AT > rom}
  54   .bss (NOLOAD)    : { __BSS_START = .;    *(.bss_4) *(.bss_2) *(.bss_1) *(.bss) *(COMMON) __BSS_END = .; }${RELOCATING+ > ram}
  55   .nrdata          : { __NRDATA_START = .; *(.nrdat_4) *(.nrdat_2) *(.nrdat_1)             __NRDATA_END =  .; }${RELOCATING+ > near_rom}
  56   .ndata           : { __NDATA_START = .;  *(.ndata_4) *(.ndata_2) *(.ndata_1)             __NDATA_END = .; }${RELOCATING+ > near_ram AT > rom}
  57   .nbss (NOLOAD)   : { __NBSS_START = .;   *(.nbss_4) *(.nbss_2) *(.nbss_1) *(.ncommon)    __NBSS_END = .; }${RELOCATING+ > near_ram}
  58   .heap (NOLOAD)   : { . = ALIGN(4); __HEAP_START = .; . += 0x2000;                        __HEAP_MAX = .; }${RELOCATING+ > near_ram}
  59   .stack (NOLOAD)  : { . = ALIGN(4); . += 0x6000; __STACK_START = .; }${RELOCATING+ > ram}
  60   .istack (NOLOAD) : { . = ALIGN(2); . += 0x100; __ISTACK_START = .; }${RELOCATING+ > ram}
  61 }
  62
  63 ${RELOCATING+__DATA_IMAGE_START = LOADADDR(.data);}
  64 ${RELOCATING+__NDATA_IMAGE_START = LOADADDR(.ndata);}
  65
  66 EOF