# Linker Script for National Semiconductor's CR16-ELF32.
#
-# Copyright (C) 2014-2015 Free Software Foundation, Inc.
-#
+# Copyright (C) 2014-2018 Free Software Foundation, Inc.
+#
# Copying and distribution of this file, with or without modification,
# are permitted in any medium without royalty provided the copyright
# notice and this notice are preserved.
+# Using an empty script for ld -r is better than mashing together
+# sections. This hack likely leaves ld -Ur broken.
+test -n "${RELOCATING}" || exit 0
+
# The next line should be uncommented if it is desired to link
# without libstart.o and directly enter main.
cat <<EOF
/* Example Linker Script for linking NS CR16 elf32 files.
- Copyright (C) 2014-2015 Free Software Foundation, Inc.
+ Copyright (C) 2014-2018 Free Software Foundation, Inc.
Copying and distribution of this script, with or without modification,
are permitted in any medium without royalty provided the copyright
OUTPUT_FORMAT("${OUTPUT_FORMAT}")
OUTPUT_ARCH(${ARCH})
-${RELOCATING+ENTRY(${ENTRY})}
+EOF
+
+test -n "${RELOCATING}" && cat <<EOF
+ENTRY(${ENTRY})
/* Define memory regions. */
MEMORY
{
- rom : ORIGIN = 0x2, LENGTH = 3M
- ram : ORIGIN = 4M, LENGTH = 10M
+ rom : ORIGIN = 0x2, LENGTH = 3M
+ ram : ORIGIN = 4M, LENGTH = 10M
}
+EOF
+
+cat <<EOF
/* Many sections come in three flavours. There is the 'real' section,
like ".data". Then there are the per-procedure or per-variable
sections, generated by -ffunction-sections and -fdata-sections in GCC,
SECTIONS
{
.init :
- {
- __INIT_START = .;
+ {
+ __INIT_START = .;
KEEP (*(.init))
- __INIT_END = .;
- } > rom
+ __INIT_END = .;
+ }${RELOCATING+ > rom}
.fini :
- {
- __FINI_START = .;
+ {
+ __FINI_START = .;
KEEP (*(.fini))
- __FINI_END = .;
- } > rom
+ __FINI_END = .;
+ }${RELOCATING+ > rom}
.jcr :
- {
+ {
KEEP (*(.jcr))
- } > rom
+ }${RELOCATING+ > rom}
- .text :
+ .text :
{
__TEXT_START = .;
*(.text) *(.text.*) *(.gnu.linkonce.t.*)
__TEXT_END = .;
- } > rom
+ }${RELOCATING+ > rom}
.rdata :
{
__RDATA_START = .;
*(.rdata_4) *(.rdata_2) *(.rdata_1) *(.rdata.*) *(.gnu.linkonce.r.*) *(.rodata*)
__RDATA_END = .;
- } > rom
+ }${RELOCATING+ > rom}
- .ctor ALIGN(4) :
- {
- __CTOR_START = .;
+ .ctor ALIGN(4) :
+ {
+ __CTOR_START = .;
/* The compiler uses crtbegin.o to find the start
of the constructors, so we make sure it is
first. Because this is a wildcard, it
KEEP (*(EXCLUDE_FILE (*crtend*.o) .ctors))
KEEP (*(SORT(.ctors.*)))
KEEP (*(.ctors))
- __CTOR_END = .;
- } > rom
+ __CTOR_END = .;
+ }${RELOCATING+ > rom}
- .dtor ALIGN(4) :
- {
- __DTOR_START = .;
+ .dtor ALIGN(4) :
+ {
+ __DTOR_START = .;
KEEP (*crtbegin*.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend*.o) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*(.dtors))
- __DTOR_END = .;
- } > rom
+ __DTOR_END = .;
+ }${RELOCATING+ > rom}
.data :
{
__DATA_START = .;
*(.data_4) *(.data_2) *(.data_1) *(.data) *(.data.*) *(.gnu.linkonce.d.*)
__DATA_END = .;
- } > ram AT > rom
+ }${RELOCATING+ > ram AT > rom}
.bss (NOLOAD) :
{
__BSS_START = .;
*(.bss_4) *(.bss_2) *(.bss_1) *(.bss) *(COMMON) *(.bss.*) *(.gnu.linkonce.b.*)
__BSS_END = .;
- } > ram
+ }${RELOCATING+ > ram}
/* You may change the sizes of the following sections to fit the actual
size your program requires.
. = ALIGN(4);
__HEAP_START = .;
. += 0x2000; __HEAP_MAX = .;
- } > ram
+ }${RELOCATING+ > ram}
.stack (NOLOAD) :
{
. = ALIGN(4);
. += 0x6000;
__STACK_START = .;
- } > ram
+ }${RELOCATING+ > ram}
.istack (NOLOAD) :
{
. = ALIGN(4);
. += 0x100;
__ISTACK_START = .;
- } > ram
+ }${RELOCATING+ > ram}
.comment 0 : { *(.comment) }
cat <<EOF
}
-__DATA_IMAGE_START = LOADADDR(.data);
+${RELOCATING+__DATA_IMAGE_START = LOADADDR(.data);}
EOF