445 lines
13 KiB
Python
445 lines
13 KiB
Python
# Copyright (C) 2014-2020 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.
|
|
#
|
|
# Unusual variables checked by this code:
|
|
# NOP - four byte opcode for no-op (defaults to 0)
|
|
# DATA_ADDR - if end-of-text-plus-one-page isn't right for data start
|
|
# OTHER_READWRITE_SECTIONS - other than .data .bss .ctors .sdata ...
|
|
# (e.g., .PARISC.global)
|
|
# OTHER_SECTIONS - at the end
|
|
# EXECUTABLE_SYMBOLS - symbols that must be defined for an
|
|
# executable (e.g., _DYNAMIC_LINK)
|
|
# TEXT_START_SYMBOLS - symbols that appear at the start of the
|
|
# .text section.
|
|
# DATA_START_SYMBOLS - symbols that appear at the start of the
|
|
# .data section.
|
|
# OTHER_BSS_SYMBOLS - symbols that appear at the start of the
|
|
# .bss section besides __bss_start.
|
|
# EMBEDDED - whether this is for an embedded system.
|
|
#
|
|
# When adding sections, do note that the names of some sections are used
|
|
# when specifying the start address of the next.
|
|
#
|
|
test -z "$ENTRY" && ENTRY=_start
|
|
test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}
|
|
test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}
|
|
if [ -z "$MACHINE" ]; then OUTPUT_ARCH=${ARCH}; else OUTPUT_ARCH=${ARCH}:${MACHINE}; fi
|
|
test "$LD_FLAG" = "N" && DATA_ADDR=.
|
|
|
|
CTOR=".ctors ${CONSTRUCTING-0} :
|
|
{
|
|
${CONSTRUCTING+ PROVIDE (__CTOR_LIST__ = .); }
|
|
${CONSTRUCTING+${CTOR_START}}
|
|
KEEP (*(.ctors))
|
|
|
|
${CONSTRUCTING+${CTOR_END}}
|
|
${CONSTRUCTING+ PROVIDE(__CTOR_END__ = .); }
|
|
} ${RELOCATING+ > ${TEXT_MEMORY}}"
|
|
|
|
DTOR=" .dtors ${CONSTRUCTING-0} :
|
|
{
|
|
${CONSTRUCTING+ PROVIDE(__DTOR_LIST__ = .); }
|
|
KEEP (*(.dtors))
|
|
${CONSTRUCTING+ PROVIDE(__DTOR_END__ = .); }
|
|
} ${RELOCATING+ > ${TEXT_MEMORY}}"
|
|
|
|
|
|
VECTORS="
|
|
/* If the 'vectors_addr' symbol is defined, it indicates the start address
|
|
of interrupt vectors.
|
|
|
|
In general, the vectors address is 0xfffe00. This can be overriden
|
|
with the '-defsym vectors_addr=0xbfc000' ld option. If you do this,
|
|
then your startup code should also set the IVBR register accordingly.
|
|
*/
|
|
|
|
PROVIDE (_vectors_addr = DEFINED (vectors_addr) ? vectors_addr : 0xfffe00);
|
|
.vectors DEFINED (vectors_addr) ? vectors_addr : 0xfffe00 :
|
|
{
|
|
KEEP (*(.vectors))
|
|
}"
|
|
|
|
#
|
|
# We provide two emulations: a fixed on that defines some memory banks
|
|
# and a configurable one that includes a user provided memory definition.
|
|
#
|
|
case $GENERIC_BOARD in
|
|
yes|1|YES)
|
|
MEMORY_DEF="
|
|
/* Get memory banks definition from some user configuration file.
|
|
This file must be located in some linker directory (search path
|
|
with -L<dir>). See fixed memory banks emulation script. */
|
|
INCLUDE memory.x;
|
|
"
|
|
;;
|
|
*)
|
|
MEMORY_DEF="
|
|
/* Fixed definition of the available memory banks.
|
|
See generic emulation script for a user defined configuration. */
|
|
MEMORY
|
|
{
|
|
text (rx) : ORIGIN = $[$ROM_TOP - $ROM_SIZE + 1], LENGTH = ${ROM_SIZE} - 4
|
|
data : ORIGIN = ${RAM_START_ADDR}, LENGTH = ${RAM_SIZE}
|
|
eeprom : ORIGIN = ${EEPROM_START_ADDR}, LENGTH = ${EEPROM_SIZE}
|
|
rvec : ORIGIN = 0xFFFFFC, LENGTH = 4
|
|
}
|
|
|
|
/* Setup the stack on the top of the data memory bank. */
|
|
PROVIDE (_stack = ${RAM_START_ADDR} + ${RAM_SIZE} - 1);
|
|
"
|
|
;;
|
|
esac
|
|
|
|
STARTUP_CODE="
|
|
/* Startup code. */
|
|
KEEP (*(.install0)) /* Section should setup the stack pointer. */
|
|
KEEP (*(.install1)) /* Place holder for applications. */
|
|
KEEP (*(.install2)) /* Optional installation of data sections in RAM. */
|
|
KEEP (*(.install3)) /* Place holder for applications. */
|
|
KEEP (*(.install4)) /* Section that calls the main. */
|
|
"
|
|
|
|
FINISH_CODE="
|
|
/* Finish code. */
|
|
KEEP (*(.fini0)) /* Beginning of finish code (_exit symbol). */
|
|
KEEP (*(.fini1)) /* Place holder for applications. */
|
|
KEEP (*(.fini2)) /* C++ destructors. */
|
|
KEEP (*(.fini3)) /* Place holder for applications. */
|
|
KEEP (*(.fini4)) /* Runtime exit. */
|
|
"
|
|
|
|
PRE_COMPUTE_DATA_SIZE="
|
|
/* SCz: this does not work yet... This is supposed to force the loading
|
|
of _map_data.o (from libgcc.a) when the .data section is not empty.
|
|
By doing so, this should bring the code that copies the .data section
|
|
from ROM to RAM at init time.
|
|
|
|
___pre_comp_data_size = SIZEOF(.data);
|
|
__install_data_sections = ___pre_comp_data_size > 0 ?
|
|
__map_data_sections : 0;
|
|
*/
|
|
"
|
|
|
|
INSTALL_RELOC="
|
|
.install0 0 : { *(.install0) }
|
|
.install1 0 : { *(.install1) }
|
|
.install2 0 : { *(.install2) }
|
|
.install3 0 : { *(.install3) }
|
|
.install4 0 : { *(.install4) }
|
|
"
|
|
|
|
FINISH_RELOC="
|
|
.fini0 0 : { *(.fini0) }
|
|
.fini1 0 : { *(.fini1) }
|
|
.fini2 0 : { *(.fini2) }
|
|
.fini3 0 : { *(.fini3) }
|
|
.fini4 0 : { *(.fini4) }
|
|
"
|
|
|
|
BSS_DATA_RELOC="
|
|
.data1 0 : { *(.data1) }
|
|
|
|
/* We want the small data sections together, so single-instruction offsets
|
|
can access them all, and initialized data all before uninitialized, so
|
|
we can shorten the on-disk segment size. */
|
|
.sdata 0 : { *(.sdata) }
|
|
.sbss 0 : { *(.sbss) }
|
|
.scommon 0 : { *(.scommon) }
|
|
"
|
|
|
|
SOFT_REGS_RELOC="
|
|
.softregs 0 : { *(.softregs) }
|
|
"
|
|
|
|
cat <<EOF
|
|
/* Copyright (C) 2014-2020 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. */
|
|
|
|
${RELOCATING+/* Linker script for HCS12Z executable (PROM). */}
|
|
${RELOCATING-/* Linker script for HCS12Z object file (ld -r). */}
|
|
|
|
OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}",
|
|
"${LITTLE_OUTPUT_FORMAT}")
|
|
OUTPUT_ARCH(${OUTPUT_ARCH})
|
|
${RELOCATING+ENTRY(${ENTRY})}
|
|
|
|
${RELOCATING+${LIB_SEARCH_DIRS}}
|
|
${RELOCATING+${EXECUTABLE_SYMBOLS}}
|
|
${RELOCATING+${MEMORY_DEF}}
|
|
|
|
${RELOCATING+PROVIDE (_start = $[$ROM_TOP - $ROM_SIZE + 1]);}
|
|
SECTIONS
|
|
{
|
|
.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.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.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.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.sdata ${RELOCATING-0} :
|
|
{
|
|
*(.rel.sdata)
|
|
${RELOCATING+*(.rel.sdata.*)}
|
|
${RELOCATING+*(.rel.gnu.linkonce.s.*)}
|
|
}
|
|
.rela.sdata ${RELOCATING-0} :
|
|
{
|
|
*(.rela.sdata)
|
|
${RELOCATING+*(.rela.sdata.*)}
|
|
${RELOCATING+*(.rela.gnu.linkonce.s.*)}
|
|
}
|
|
.rel.sbss ${RELOCATING-0} :
|
|
{
|
|
*(.rel.sbss)
|
|
${RELOCATING+*(.rel.sbss.*)}
|
|
${RELOCATING+*(.rel.gnu.linkonce.sb.*)}
|
|
}
|
|
.rela.sbss ${RELOCATING-0} :
|
|
{
|
|
*(.rela.sbss)
|
|
${RELOCATING+*(.rela.sbss.*)}
|
|
${RELOCATING+*(.rel.gnu.linkonce.sb.*)}
|
|
}
|
|
.rel.bss ${RELOCATING-0} :
|
|
{
|
|
*(.rel.bss)
|
|
${RELOCATING+*(.rel.bss.*)}
|
|
${RELOCATING+*(.rel.gnu.linkonce.b.*)}
|
|
}
|
|
.rela.bss ${RELOCATING-0} :
|
|
{
|
|
*(.rela.bss)
|
|
${RELOCATING+*(.rela.bss.*)}
|
|
${RELOCATING+*(.rela.gnu.linkonce.b.*)}
|
|
}
|
|
.rel.stext ${RELOCATING-0} : { *(.rel.stest) }
|
|
.rela.stext ${RELOCATING-0} : { *(.rela.stest) }
|
|
.rel.etext ${RELOCATING-0} : { *(.rel.etest) }
|
|
.rela.etext ${RELOCATING-0} : { *(.rela.etest) }
|
|
.rel.sdata ${RELOCATING-0} : { *(.rel.sdata) }
|
|
.rela.sdata ${RELOCATING-0} : { *(.rela.sdata) }
|
|
.rel.edata ${RELOCATING-0} : { *(.rel.edata) }
|
|
.rela.edata ${RELOCATING-0} : { *(.rela.edata) }
|
|
.rel.eit_v ${RELOCATING-0} : { *(.rel.eit_v) }
|
|
.rela.eit_v ${RELOCATING-0} : { *(.rela.eit_v) }
|
|
.rel.ebss ${RELOCATING-0} : { *(.rel.ebss) }
|
|
.rela.ebss ${RELOCATING-0} : { *(.rela.ebss) }
|
|
.rel.srodata ${RELOCATING-0} : { *(.rel.srodata) }
|
|
.rela.srodata ${RELOCATING-0} : { *(.rela.srodata) }
|
|
.rel.erodata ${RELOCATING-0} : { *(.rel.erodata) }
|
|
.rela.erodata ${RELOCATING-0} : { *(.rela.erodata) }
|
|
.rel.got ${RELOCATING-0} : { *(.rel.got) }
|
|
.rela.got ${RELOCATING-0} : { *(.rela.got) }
|
|
.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.init ${RELOCATING-0} : { *(.rel.init) }
|
|
.rela.init ${RELOCATING-0} : { *(.rela.init) }
|
|
.rel.fini ${RELOCATING-0} : { *(.rel.fini) }
|
|
.rela.fini ${RELOCATING-0} : { *(.rela.fini) }
|
|
.rel.plt ${RELOCATING-0} : { *(.rel.plt) }
|
|
.rela.plt ${RELOCATING-0} : { *(.rela.plt) }
|
|
|
|
/* Start of text section. */
|
|
.stext ${RELOCATING-0} :
|
|
{
|
|
*(.stext)
|
|
} ${RELOCATING+ > ${TEXT_MEMORY}}
|
|
|
|
.init ${RELOCATING-0} :
|
|
{
|
|
KEEP (*(SORT_NONE(.init)))
|
|
} ${RELOCATING+=${NOP-0}}
|
|
|
|
${RELOCATING-${INSTALL_RELOC}}
|
|
${RELOCATING-${FINISH_RELOC}}
|
|
|
|
.text ${RELOCATING-0}:
|
|
{
|
|
/* Put startup code at beginning so that _start keeps same address. */
|
|
${RELOCATING+${STARTUP_CODE}}
|
|
|
|
*(.text)
|
|
${RELOCATING+*(.text.*)}
|
|
/* .gnu.warning sections are handled specially by elf.em. */
|
|
*(.gnu.warning)
|
|
${RELOCATING+*(.gnu.linkonce.t.*)}
|
|
${RELOCATING+*(.tramp)}
|
|
${RELOCATING+*(.tramp.*)}
|
|
|
|
${RELOCATING+KEEP (*(SORT_NONE(.fini)))}
|
|
${RELOCATING+${FINISH_CODE}}
|
|
|
|
${RELOCATING+_etext = .;}
|
|
${RELOCATING+PROVIDE (etext = .);}
|
|
${RELOCATING+. = ALIGN(2);}
|
|
} ${RELOCATING+ > ${TEXT_MEMORY} =${NOP}}
|
|
.rvec ${RELOCATING-0} :
|
|
{
|
|
${RELOCATING+LONG(_start);}
|
|
} ${RELOCATING+ > rvec}
|
|
.eh_frame ${RELOCATING-0} :
|
|
{
|
|
KEEP (*(.eh_frame))
|
|
} ${RELOCATING+ > ${TEXT_MEMORY}}
|
|
|
|
.gcc_except_table ${RELOCATING-0} :
|
|
{
|
|
*(.gcc_except_table)
|
|
} ${RELOCATING+ > ${TEXT_MEMORY}}
|
|
|
|
.rodata ${RELOCATING-0} :
|
|
{
|
|
*(.rodata)
|
|
${RELOCATING+*(.rodata.*)}
|
|
${RELOCATING+*(.gnu.linkonce.r*)}
|
|
${RELOCATING+. = ALIGN(2);}
|
|
} ${RELOCATING+ > ${TEXT_MEMORY} =0xffffffff}
|
|
|
|
.rodata1 ${RELOCATING-0} :
|
|
{
|
|
*(.rodata1)
|
|
${RELOCATING+. = ALIGN(2);}
|
|
} ${RELOCATING+ > ${TEXT_MEMORY} =0xffffffff}
|
|
|
|
/* Constructor and destructor tables are in ROM. */
|
|
${RELOCATING+${CTOR}}
|
|
${RELOCATING+${DTOR}}
|
|
|
|
.jcr ${RELOCATING-0} :
|
|
{
|
|
KEEP (*(.jcr))
|
|
} ${RELOCATING+ > ${TEXT_MEMORY}}
|
|
|
|
/* Start of the data section image in ROM. */
|
|
${RELOCATING+__data_image = .;}
|
|
${RELOCATING+PROVIDE (__data_image = .);}
|
|
|
|
/* All read-only sections that normally go in PROM must be above.
|
|
We construct the DATA image section in PROM at end of all these
|
|
read-only sections. The data image must be copied at init time.
|
|
Refer to GNU ld, Section 3.6.8.2 Output Section LMA. */
|
|
.data ${RELOCATING-0} : ${RELOCATING+AT (__data_image)}
|
|
{
|
|
${RELOCATING+__data_section_start = .;}
|
|
${RELOCATING+PROVIDE (__data_section_start = .);}
|
|
|
|
${RELOCATING+${DATA_START_SYMBOLS}}
|
|
${RELOCATING+*(.sdata)}
|
|
*(.data)
|
|
${RELOCATING+*(.data.*)}
|
|
${RELOCATING+*(.data1)}
|
|
${RELOCATING+*(.gnu.linkonce.d.*)}
|
|
${CONSTRUCTING+CONSTRUCTORS}
|
|
|
|
${RELOCATING+_edata = .;}
|
|
${RELOCATING+PROVIDE (edata = .);}
|
|
${RELOCATING+. = ALIGN(2);}
|
|
} ${RELOCATING+ > ${DATA_MEMORY} =0xffffffff}
|
|
|
|
${RELOCATING+__data_section_size = SIZEOF(.data);}
|
|
${RELOCATING+PROVIDE (__data_section_size = SIZEOF(.data));}
|
|
${RELOCATING+__data_image_end = __data_image + __data_section_size;}
|
|
|
|
${RELOCATING+${PRE_COMPUTE_DATA_SIZE}}
|
|
|
|
.install ${RELOCATING-0}:
|
|
{
|
|
${RELOCATING+. = __data_section_size;}
|
|
} ${RELOCATING+ > ${TEXT_MEMORY}}
|
|
|
|
/* Relocation for some bss and data sections. */
|
|
${RELOCATING-${BSS_DATA_RELOC}}
|
|
${RELOCATING-${SOFT_REGS_RELOC}}
|
|
|
|
.bss ${RELOCATING-0} :
|
|
{
|
|
${RELOCATING+__bss_start = .;}
|
|
${RELOCATING+*(.softregs)}
|
|
${RELOCATING+*(.sbss)}
|
|
${RELOCATING+*(.common)}
|
|
${RELOCATING+*(.scommon)}
|
|
${RELOCATING+*(.dynbss)}
|
|
*(.bss)
|
|
${RELOCATING+*(.bss.*)}
|
|
${RELOCATING+*(.gnu.linkonce.b.*)}
|
|
${RELOCATING+*(COMMON)}
|
|
${RELOCATING+PROVIDE (_end = .);}
|
|
} ${RELOCATING+ > ${DATA_MEMORY}}
|
|
${RELOCATING+__bss_size = SIZEOF(.bss);}
|
|
${RELOCATING+PROVIDE (__bss_size = SIZEOF(.bss));}
|
|
|
|
.eeprom ${RELOCATING-0} :
|
|
{
|
|
*(.eeprom)
|
|
${RELOCATING+*(.eeprom.*)}
|
|
} ${RELOCATING+ > ${EEPROM_MEMORY}}
|
|
|
|
${RELOCATING+${VECTORS}}
|
|
|
|
/* 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) }
|
|
|
|
/* Treatment of DWARF debug section must be at end of the linker
|
|
script to avoid problems when there are undefined symbols. It's necessary
|
|
to avoid that the DWARF section is relocated before such undefined
|
|
symbols are found. */
|
|
EOF
|
|
|
|
. $srcdir/scripttempl/DWARF.sc
|
|
|
|
cat <<EOF
|
|
}
|
|
EOF
|