346 lines
10 KiB
Python
346 lines
10 KiB
Python
# Copyright (C) 2014-2022 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.
|
|
|
|
# RODATA_PM_OFFSET
|
|
# If empty, .rodata sections will be part of .data. This is for
|
|
# devices where it is not possible to use LD* instructions to read
|
|
# from flash.
|
|
#
|
|
# If non-empty, .rodata is not part of .data and the .rodata
|
|
# objects are assigned addresses at an offest of RODATA_PM_OFFSET.
|
|
# This is for devices that feature reading from flash by means of
|
|
# LD* instructions, provided the addresses are offset by
|
|
# __RODATA_PM_OFFSET__ (which defaults to RODATA_PM_OFFSET).
|
|
|
|
cat <<EOF
|
|
/* Copyright (C) 2014-2022 Free Software Foundation, Inc.
|
|
|
|
Copying and distribution of this script, with or without modification,
|
|
are permitted in any medium without royalty provided the copyright
|
|
notice and this notice are preserved. */
|
|
|
|
OUTPUT_FORMAT("${OUTPUT_FORMAT}","${OUTPUT_FORMAT}","${OUTPUT_FORMAT}")
|
|
OUTPUT_ARCH(${ARCH})
|
|
EOF
|
|
|
|
test -n "${RELOCATING}" && cat <<EOF
|
|
__TEXT_REGION_LENGTH__ = DEFINED(__TEXT_REGION_LENGTH__) ? __TEXT_REGION_LENGTH__ : $TEXT_LENGTH;
|
|
__DATA_REGION_LENGTH__ = DEFINED(__DATA_REGION_LENGTH__) ? __DATA_REGION_LENGTH__ : $DATA_LENGTH;
|
|
${EEPROM_LENGTH+__EEPROM_REGION_LENGTH__ = DEFINED(__EEPROM_REGION_LENGTH__) ? __EEPROM_REGION_LENGTH__ : $EEPROM_LENGTH;}
|
|
__FUSE_REGION_LENGTH__ = DEFINED(__FUSE_REGION_LENGTH__) ? __FUSE_REGION_LENGTH__ : $FUSE_LENGTH;
|
|
__LOCK_REGION_LENGTH__ = DEFINED(__LOCK_REGION_LENGTH__) ? __LOCK_REGION_LENGTH__ : $LOCK_LENGTH;
|
|
__SIGNATURE_REGION_LENGTH__ = DEFINED(__SIGNATURE_REGION_LENGTH__) ? __SIGNATURE_REGION_LENGTH__ : $SIGNATURE_LENGTH;
|
|
${USER_SIGNATURE_LENGTH+__USER_SIGNATURE_REGION_LENGTH__ = DEFINED(__USER_SIGNATURE_REGION_LENGTH__) ? __USER_SIGNATURE_REGION_LENGTH__ : $USER_SIGNATURE_LENGTH;}
|
|
${RODATA_PM_OFFSET+__RODATA_PM_OFFSET__ = DEFINED(__RODATA_PM_OFFSET__) ? __RODATA_PM_OFFSET__ : $RODATA_PM_OFFSET;}
|
|
MEMORY
|
|
{
|
|
text (rx) : ORIGIN = 0, LENGTH = __TEXT_REGION_LENGTH__
|
|
data (rw!x) : ORIGIN = $DATA_ORIGIN, LENGTH = __DATA_REGION_LENGTH__
|
|
${EEPROM_LENGTH+ eeprom (rw!x) : ORIGIN = 0x810000, LENGTH = __EEPROM_REGION_LENGTH__}
|
|
$FUSE_NAME (rw!x) : ORIGIN = 0x820000, LENGTH = __FUSE_REGION_LENGTH__
|
|
lock (rw!x) : ORIGIN = 0x830000, LENGTH = __LOCK_REGION_LENGTH__
|
|
signature (rw!x) : ORIGIN = 0x840000, LENGTH = __SIGNATURE_REGION_LENGTH__
|
|
${USER_SIGNATURE_LENGTH+ user_signatures (rw!x) : ORIGIN = 0x850000, LENGTH = __USER_SIGNATURE_REGION_LENGTH__}
|
|
}
|
|
EOF
|
|
|
|
cat <<EOF
|
|
SECTIONS
|
|
{
|
|
/* Read-only sections, merged into text segment: */
|
|
${TEXT_DYNAMIC+${DYNAMIC}}
|
|
.hash ${RELOCATING-0} : { *(.hash) }
|
|
.dynsym ${RELOCATING-0} : { *(.dynsym) }
|
|
.dynstr ${RELOCATING-0} : { *(.dynstr) }
|
|
.gnu.version ${RELOCATING-0} : { *(.gnu.version) }
|
|
.gnu.version_d ${RELOCATING-0} : { *(.gnu.version_d) }
|
|
.gnu.version_r ${RELOCATING-0} : { *(.gnu.version_r) }
|
|
|
|
.rel.init ${RELOCATING-0} : { *(.rel.init) }
|
|
.rela.init ${RELOCATING-0} : { *(.rela.init) }
|
|
.rel.text ${RELOCATING-0} :
|
|
{
|
|
*(.rel.text)
|
|
${RELOCATING+*(.rel.text.*)}
|
|
${RELOCATING+*(.rel.gnu.linkonce.t*)}
|
|
}
|
|
.rela.text ${RELOCATING-0} :
|
|
{
|
|
*(.rela.text)
|
|
${RELOCATING+*(.rela.text.*)}
|
|
${RELOCATING+*(.rela.gnu.linkonce.t*)}
|
|
}
|
|
.rel.fini ${RELOCATING-0} : { *(.rel.fini) }
|
|
.rela.fini ${RELOCATING-0} : { *(.rela.fini) }
|
|
.rel.rodata ${RELOCATING-0} :
|
|
{
|
|
*(.rel.rodata)
|
|
${RELOCATING+*(.rel.rodata.*)}
|
|
${RELOCATING+*(.rel.gnu.linkonce.r*)}
|
|
}
|
|
.rela.rodata ${RELOCATING-0} :
|
|
{
|
|
*(.rela.rodata)
|
|
${RELOCATING+*(.rela.rodata.*)}
|
|
${RELOCATING+*(.rela.gnu.linkonce.r*)}
|
|
}
|
|
.rel.data ${RELOCATING-0} :
|
|
{
|
|
*(.rel.data)
|
|
${RELOCATING+*(.rel.data.*)}
|
|
${RELOCATING+*(.rel.gnu.linkonce.d*)}
|
|
}
|
|
.rela.data ${RELOCATING-0} :
|
|
{
|
|
*(.rela.data)
|
|
${RELOCATING+*(.rela.data.*)}
|
|
${RELOCATING+*(.rela.gnu.linkonce.d*)}
|
|
}
|
|
.rel.ctors ${RELOCATING-0} : { *(.rel.ctors) }
|
|
.rela.ctors ${RELOCATING-0} : { *(.rela.ctors) }
|
|
.rel.dtors ${RELOCATING-0} : { *(.rel.dtors) }
|
|
.rela.dtors ${RELOCATING-0} : { *(.rela.dtors) }
|
|
.rel.got ${RELOCATING-0} : { *(.rel.got) }
|
|
.rela.got ${RELOCATING-0} : { *(.rela.got) }
|
|
.rel.bss ${RELOCATING-0} : { *(.rel.bss) }
|
|
.rela.bss ${RELOCATING-0} : { *(.rela.bss) }
|
|
.rel.plt ${RELOCATING-0} : { *(.rel.plt) }
|
|
.rela.plt ${RELOCATING-0} : { *(.rela.plt) }
|
|
|
|
/* Internal text space or external memory. */
|
|
.text ${RELOCATING-0} :
|
|
{
|
|
${RELOCATING+*(.vectors)
|
|
KEEP(*(.vectors))
|
|
|
|
/* For data that needs to reside in the lower 64k of progmem. */
|
|
*(.progmem.gcc*)
|
|
|
|
/* PR 13812: Placing the trampolines here gives a better chance
|
|
that they will be in range of the code that uses them. */
|
|
. = ALIGN(2);
|
|
__trampolines_start = . ;
|
|
/* The jump trampolines for the 16-bit limited relocs will reside here. */
|
|
*(.trampolines)
|
|
*(.trampolines*)
|
|
__trampolines_end = . ;
|
|
|
|
/* avr-libc expects these data to reside in lower 64K. */
|
|
*libprintf_flt.a:*(.progmem.data)
|
|
*libc.a:*(.progmem.data)
|
|
|
|
*(.progmem.*)
|
|
|
|
. = ALIGN(2);
|
|
|
|
/* For code that needs to reside in the lower 128k progmem. */
|
|
*(.lowtext)
|
|
*(.lowtext*)}
|
|
|
|
${CONSTRUCTING+ __ctors_start = . ; }
|
|
${CONSTRUCTING+ *(.ctors) }
|
|
${CONSTRUCTING+ __ctors_end = . ; }
|
|
${CONSTRUCTING+ __dtors_start = . ; }
|
|
${CONSTRUCTING+ *(.dtors) }
|
|
${CONSTRUCTING+ __dtors_end = . ; }
|
|
${RELOCATING+KEEP(SORT(*)(.ctors))
|
|
KEEP(SORT(*)(.dtors))
|
|
|
|
/* From this point on, we do not bother about whether the insns are
|
|
below or above the 16 bits boundary. */
|
|
*(.init0) /* Start here after reset. */
|
|
KEEP (*(.init0))
|
|
*(.init1)
|
|
KEEP (*(.init1))
|
|
*(.init2) /* Clear __zero_reg__, set up stack pointer. */
|
|
KEEP (*(.init2))
|
|
*(.init3)
|
|
KEEP (*(.init3))
|
|
*(.init4) /* Initialize data and BSS. */
|
|
KEEP (*(.init4))
|
|
*(.init5)
|
|
KEEP (*(.init5))
|
|
*(.init6) /* C++ constructors. */
|
|
KEEP (*(.init6))
|
|
*(.init7)
|
|
KEEP (*(.init7))
|
|
*(.init8)
|
|
KEEP (*(.init8))
|
|
*(.init9) /* Call main(). */
|
|
KEEP (*(.init9))}
|
|
*(.text)
|
|
${RELOCATING+. = ALIGN(2);
|
|
*(.text.*)
|
|
. = ALIGN(2);
|
|
*(.fini9) /* _exit() starts here. */
|
|
KEEP (*(.fini9))
|
|
*(.fini8)
|
|
KEEP (*(.fini8))
|
|
*(.fini7)
|
|
KEEP (*(.fini7))
|
|
*(.fini6) /* C++ destructors. */
|
|
KEEP (*(.fini6))
|
|
*(.fini5)
|
|
KEEP (*(.fini5))
|
|
*(.fini4)
|
|
KEEP (*(.fini4))
|
|
*(.fini3)
|
|
KEEP (*(.fini3))
|
|
*(.fini2)
|
|
KEEP (*(.fini2))
|
|
*(.fini1)
|
|
KEEP (*(.fini1))
|
|
*(.fini0) /* Infinite loop after program termination. */
|
|
KEEP (*(.fini0))
|
|
|
|
/* For code that needs not to reside in the lower progmem. */
|
|
*(.hightext)
|
|
*(.hightext*)
|
|
|
|
*(.progmemx.*)
|
|
|
|
. = ALIGN(2);
|
|
|
|
/* For tablejump instruction arrays. We do not relax
|
|
JMP / CALL instructions within these sections. */
|
|
*(.jumptables)
|
|
*(.jumptables*)
|
|
|
|
_etext = . ;}
|
|
} ${RELOCATING+ > text}
|
|
EOF
|
|
|
|
# Devices like ATtiny816 allow to read from flash memory by means of LD*
|
|
# instructions provided we add an offset of __RODATA_PM_OFFSET__ to the
|
|
# flash addresses.
|
|
|
|
if test -n "$RODATA_PM_OFFSET"; then
|
|
cat <<EOF
|
|
.rodata ${RELOCATING+ ADDR(.text) + SIZEOF (.text) + __RODATA_PM_OFFSET__ } ${RELOCATING-0} :
|
|
{
|
|
*(.rodata)
|
|
${RELOCATING+ *(.rodata*)
|
|
*(.gnu.linkonce.r*)}
|
|
} ${RELOCATING+AT> text}
|
|
EOF
|
|
fi
|
|
|
|
cat <<EOF
|
|
.data ${RELOCATING-0} :
|
|
{
|
|
${RELOCATING+ PROVIDE (__data_start = .) ; }
|
|
*(.data)
|
|
${RELOCATING+ *(.data*)
|
|
*(.gnu.linkonce.d*)}
|
|
EOF
|
|
|
|
# Classical devices that don't show flash memory in the SRAM address space
|
|
# need .rodata to be part of .data because the compiler will use LD*
|
|
# instructions and LD* cannot access flash.
|
|
|
|
if test -z "$RODATA_PM_OFFSET" && test -n "${RELOCATING}"; then
|
|
cat <<EOF
|
|
*(.rodata) /* We need to include .rodata here if gcc is used */
|
|
*(.rodata*) /* with -fdata-sections. */
|
|
*(.gnu.linkonce.r*)
|
|
EOF
|
|
fi
|
|
|
|
cat <<EOF
|
|
${RELOCATING+. = ALIGN(2);}
|
|
${RELOCATING+ _edata = . ; }
|
|
${RELOCATING+ PROVIDE (__data_end = .) ; }
|
|
} ${RELOCATING+ > data ${RELOCATING+AT> text}}
|
|
|
|
.bss ${RELOCATING+ ADDR(.data) + SIZEOF (.data)} ${RELOCATING-0} :${RELOCATING+ AT (ADDR (.bss))}
|
|
{
|
|
${RELOCATING+ PROVIDE (__bss_start = .) ; }
|
|
*(.bss)
|
|
${RELOCATING+ *(.bss*)}
|
|
${RELOCATING+ *(COMMON)}
|
|
${RELOCATING+ PROVIDE (__bss_end = .) ; }
|
|
} ${RELOCATING+ > data}
|
|
|
|
${RELOCATING+ __data_load_start = LOADADDR(.data); }
|
|
${RELOCATING+ __data_load_end = __data_load_start + SIZEOF(.data); }
|
|
|
|
/* Global data not cleared after reset. */
|
|
.noinit ${RELOCATING+ ADDR(.bss) + SIZEOF (.bss)} ${RELOCATING-0}: ${RELOCATING+ AT (ADDR (.noinit))}
|
|
{
|
|
${RELOCATING+ PROVIDE (__noinit_start = .) ; }
|
|
*(.noinit${RELOCATING+ .noinit.* .gnu.linkonce.n.*})
|
|
${RELOCATING+ PROVIDE (__noinit_end = .) ; }
|
|
${RELOCATING+ _end = . ; }
|
|
${RELOCATING+ PROVIDE (__heap_start = .) ; }
|
|
} ${RELOCATING+ > data}
|
|
EOF
|
|
|
|
if test -n "${EEPROM_LENGTH}"; then
|
|
cat <<EOF
|
|
|
|
.eeprom ${RELOCATING-0}:
|
|
{
|
|
/* See .data above... */
|
|
KEEP(*(.eeprom*))
|
|
${RELOCATING+ __eeprom_end = . ; }
|
|
} ${RELOCATING+ > eeprom}
|
|
EOF
|
|
fi
|
|
|
|
if test "$FUSE_NAME" = "fuse" ; then
|
|
cat <<EOF
|
|
|
|
.fuse ${RELOCATING-0}:
|
|
{
|
|
KEEP(*(.fuse))
|
|
${RELOCATING+KEEP(*(.lfuse))
|
|
KEEP(*(.hfuse))
|
|
KEEP(*(.efuse))}
|
|
} ${RELOCATING+ > fuse}
|
|
EOF
|
|
fi
|
|
|
|
cat <<EOF
|
|
|
|
.lock ${RELOCATING-0}:
|
|
{
|
|
KEEP(*(.lock*))
|
|
} ${RELOCATING+ > lock}
|
|
|
|
.signature ${RELOCATING-0}:
|
|
{
|
|
KEEP(*(.signature*))
|
|
} ${RELOCATING+ > signature}
|
|
EOF
|
|
|
|
if test "$FUSE_NAME" = "config" ; then
|
|
cat <<EOF
|
|
|
|
.config ${RELOCATING-0}:
|
|
{
|
|
KEEP(*(.config*))
|
|
} ${RELOCATING+ > config}
|
|
EOF
|
|
fi
|
|
|
|
cat <<EOF
|
|
|
|
/* Stabs debugging sections. */
|
|
.stab 0 : { *(.stab) }
|
|
.stabstr 0 : { *(.stabstr) }
|
|
.stab.excl 0 : { *(.stab.excl) }
|
|
.stab.exclstr 0 : { *(.stab.exclstr) }
|
|
.stab.index 0 : { *(.stab.index) }
|
|
.stab.indexstr 0 : { *(.stab.indexstr) }
|
|
.comment 0 : { *(.comment) }
|
|
.note.gnu.build-id ${RELOCATING-0} : { *(.note.gnu.build-id) }
|
|
EOF
|
|
|
|
. $srcdir/scripttempl/DWARF.sc
|
|
|
|
cat <<EOF
|
|
}
|
|
EOF
|