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skrzyp |
/*==========================================================================
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//
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// m68k.ld
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//
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// Linker script
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//
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//==========================================================================
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// ####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 2003, 2004, 2005, 2006, 2008 Free Software Foundation, Inc.
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later
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// version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with eCos; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// As a special exception, if other files instantiate templates or use
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// macros or inline functions from this file, or you compile this file
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// and link it with other works to produce a work based on this file,
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// this file does not by itself cause the resulting work to be covered by
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// the GNU General Public License. However the source code for this file
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// must still be made available in accordance with section (3) of the GNU
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// General Public License v2.
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//
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// This exception does not invalidate any other reasons why a work based
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// on this file might be covered by the GNU General Public License.
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// -------------------------------------------
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// ####ECOSGPLCOPYRIGHTEND####
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//==========================================================================
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//###DESCRIPTIONBEGIN####
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//
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// Author(s): bartv
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// Date: 2003-06-04
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//
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//###DESCRIPTIONEND####
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//========================================================================
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*/
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#include
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#include
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#define __LDI__ 1
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#include CYGHWR_MEMORY_LAYOUT_H
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STARTUP(vectors.o)
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ENTRY(hal_m68k_exception_reset)
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#ifdef EXTRAS
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INPUT(extras.o)
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#endif
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GROUP(libtarget.a libgcc.a libsupc++.a)
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#define ALIGN_LMA 4
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#define FOLLOWING(_section_) AT ((LOADADDR (_section_) + SIZEOF (_section_) + ALIGN_LMA - 1) & ~ (ALIGN_LMA - 1))
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#define LMA_EQ_VMA
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#define FORCE_OUTPUT . = .
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#ifndef CYG_LABEL_DEFN
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# define CYG_LABEL_DEFN(_label) _label
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#endif
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// Depending on the startup type and issues such as the memory map
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// before and after any remapping, _stext should usually be defined
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// either at the beginning of the .m68k_startup section or at the
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// beginning of the .text section. Or conceivably somewhere else, in
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// which case it is up to the platform-specific linker script or
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// code to define _stext. The platform HAL can specify the desired
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// behaviour via the LAYOUT_H file.
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#if defined(_HAL_M68K_STEXT_AT_M68K_TEXT_)
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# define _HAL_M68K_STARTUP_SECTION_STEXT_
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# define _HAL_TEXT_SECTION_STEXT_ _stext = . ;
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#elif defined(_HAL_M68K_STEXT_ELSEWHERE_)
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# define _HAL_M68K_STARTUP_SECTION_STEXT_
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# define _HAL_TEXT_SECTION_STEXT_
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#else
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# define _HAL_M68K_STARTUP_SECTION_STEXT_ _stext = . ;
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# define _HAL_TEXT_SECTION_STEXT_
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#endif
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#define SECTIONS_BEGIN
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// RAM vectors, i.e. the M68K exception table, the virtual vector table,
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// and possibly some data that needs to be shared between eCos and
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// RedBoot. Usually this will be located at 0 but may be at another
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// address via e.g. %vbr. Some platforms in some configurations may
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// have an empty ram vectors section with all the work done in
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// .vectors instead. The section may or may not be loadable.
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#define SECTION_ram_vectors(_region_, _vma_) \
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. = ALIGN( _vma_ , ALIGN_LMA ) ; \
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_hal_ram_vectors_section_start = . ; \
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.ram_vectors . : { KEEP (*(.ram_vectors)) } > _region_ \
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. = ALIGN(ALIGN_LMA) ; \
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_hal_ram_vectors_section_end = . ; \
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_hal_ram_vectors_section_size = _hal_ram_vectors_section_end - \
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_hal_ram_vectors_section_start ;
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// .m68k_startup usually contains only the M68K startup code. It may also
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// contain the exception vectors if booting from flash and the exception
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// vectors are held in flash as well. .vectors.0 is for backwards
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// compatibility with older HALs.
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#define SECTION_m68k_start(_region_, _vma_) \
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. = ALIGN( _vma_ , ALIGN_LMA ) ; \
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_hal_m68k_start_section_start = . ; \
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_HAL_M68K_STARTUP_SECTION_STEXT_ \
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.m68k_start . : { KEEP (*(.m68k_start)) KEEP (*(.m68k_start.*)) KEEP (*(.vectors.0)) } > _region_ \
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. = ALIGN(ALIGN_LMA) ; \
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_hal_m68k_start_section_end = . ; \
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_hal_m68k_start_section_size = _hal_m68k_start_section_end - _hal_m68k_start_section_start ;
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// Some coldfires booting from internal flash need a signature block at
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// a magic location
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#define SECTION_mcfxxxx_cfm_security_settings(_region_, _vma_) \
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. = ALIGN( _vma_ , ALIGN_LMA ) ; \
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_hal_mcfxxxx_cfm_security_settings_section_start = . ; \
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.mcfxxxx_cfm_security_settings . : \
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{ \
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FORCE_OUTPUT; \
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KEEP (*(.mcfxxxx_cfm_security_settings)); \
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} > _region_ \
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. = ALIGN(ALIGN_LMA) ; \
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_hal_mcfxxxx_cfm_security_settings_section_end = . ; \
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_hal_mcfxxxx_cfm_security_settings_section_size = _hal_mcfxxxx_cfm_security_settings_section_end - \
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_hal_mcfxxxx_cfm_security_settings_section_start ;
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// ----------------------------------------------------------------------------
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// C++ support. It should always be possible to discard the global destructors
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// since eCos applications are not expected to exit. The exception handling
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// support is normally needed only if linking with libstdc++, otherwise
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// there is no code in the system to use the exception frame info.
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#if defined(CYGINT_HAL_LINKER_SCRIPT_KEEP_DTORS)
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# define _DTORS1_ \
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__DTOR_LIST__ = ABSOLUTE(.); \
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KEEP(*(SORT(.dtors*))) \
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__DTOR_END__ = ABSOLUTE(.); \
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# define _DTORS2_
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#else
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# define _DTORS1_
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# define _DTORS2_ /DISCARD/ : { *(.dtors*) }
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#endif
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#if defined(CYGPKG_LIBSTDCXX) || defined(CYGINT_HAL_LINKER_SCRIPT_KEEP_EH_FRAME)
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# define _EH_FRAME1_(_region_) \
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.eh_frame . : { \
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FORCE_OUTPUT; __EH_FRAME_BEGIN__ = ABSOLUTE(.); \
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KEEP(*(.eh_frame)) \
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. = ALIGN(ALIGN_LMA); \
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__FRAME_END__ = ABSOLUTE(.); \
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LONG(0) \
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LONG(0) \
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} > _region_ = 0
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# define _EH_FRAME2_
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#else
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# define _EH_FRAME1_(_region_)
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# define _EH_FRAME2_ /DISCARD/ : { *(.eh_frame) }
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#endif
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#if defined(CYGPKG_LIBSTDCXX) || defined(CYGINT_HAL_LINKER_SCRIPT_KEEP_GCC_EXCEPT_TABLE)
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# define _GCC_EXCEPT_TABLE1_(_region_) \
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.gcc_except_table . : { \
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__EXCEPT_START__ = ABSOLUTE(.); \
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KEEP(*(.gcc_except_table)) *(.gcc_except_table.*) \
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__EXCEPT_END__ = ABSOLUTE(.); \
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} > _region_
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# define _GCC_EXCEPT_TABLE2_
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#else
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# define _GCC_EXCEPT_TABLE1_(_region_)
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# define _GCC_EXCEPT_TABLE2_ /DISCARD/ : { *(.gcc_except_table) *(.gcc_except_table.*) }
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#endif
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| 179 |
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#define SECTION_code(_region_, _vma_) \
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. = ALIGN( _vma_ , ALIGN_LMA ) ; \
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_hal_code_section_start = . ; \
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_hal_text_section_start = . ; \
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_HAL_TEXT_SECTION_STEXT_ \
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.text . : { \
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*(.text*) *(.gnu.warning) *(.gnu.linkonce.t*) *(.init) \
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. = ALIGN (4); \
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__CTOR_LIST__ = ABSOLUTE(.); \
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KEEP(*(SORT(.ctors*))); \
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__CTOR_END__ = ABSOLUTE(.); \
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| 190 |
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. = ALIGN (4); \
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| 191 |
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_DTORS1_ \
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| 192 |
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} > _region_ \
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. = ALIGN(ALIGN_LMA) ; \
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_etext = . ; PROVIDE (etext = .) ; \
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_hal_text_section_end = . ; \
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_hal_text_section_size = _hal_text_section_end - _hal_text_section_start ; \
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.rodata . : { *(.rodata1) *(.rodata*) *(.gnu.linkonce.r.*) } > _region_ \
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. = ALIGN(ALIGN_LMA) ; \
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| 199 |
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_EH_FRAME1_(_region_) \
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. = ALIGN(ALIGN_LMA) ; \
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| 201 |
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_GCC_EXCEPT_TABLE1_(_region_) \
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| 202 |
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. = ALIGN(ALIGN_LMA) ; \
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| 203 |
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.rel.text : { *(.rel.text) *(.rel.text.*) *(.rel.gnu.linkonce.t*) } > _region_ \
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.rela.text : { *(.rela.text) *(.rela.text.*) *(.rela.gnu.linkonce.t*) } > _region_ \
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.rel.data : { *(.rel.data) *(.rel.data.*) *(.rel.gnu.linkonce.d*) } > _region_ \
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.rela.data : { *(.rela.data) *(.rela.data.*) *(.rela.gnu.linkonce.d*) } > _region_ \
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| 207 |
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.rel.rodata : { *(.rel.rodata) *(.rel.rodata.*) *(.rel.gnu.linkonce.r*) } > _region_ \
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| 208 |
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.rela.rodata : { *(.rela.rodata) *(.rela.rodata.*) *(.rela.gnu.linkonce.r*) } > _region_ \
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| 209 |
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.rel.got : { *(.rel.got) } > _region_ \
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| 210 |
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.fixup . : { \
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| 211 |
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__FIXUP_START__ = ABSOLUTE(.); \
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*(.fixup) \
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| 213 |
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__FIXUP_END__ = ABSOLUTE(.); \
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| 214 |
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} > _region_ \
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| 215 |
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.got . : { \
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| 216 |
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FORCE_OUTPUT; *(.got.plt) *(.got) \
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| 217 |
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_GOT1_START_ = ABSOLUTE (.); *(.got1) _GOT1_END_ = ABSOLUTE (.); \
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| 218 |
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_GOT2_START_ = ABSOLUTE (.); *(.got2) _GOT2_END_ = ABSOLUTE (.); \
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| 219 |
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} > _region_ \
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| 220 |
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. = ALIGN(ALIGN_LMA) ; \
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| 221 |
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_hal_code_section_end = . ; \
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| 222 |
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_hal_code_section_size = _hal_code_section_end - _hal_code_section_start ; \
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| 223 |
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_DTORS2_ \
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| 224 |
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_EH_FRAME2_ \
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| 225 |
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_GCC_EXCEPT_TABLE2_
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| 226 |
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| 227 |
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#define SECTION_data(_region_, _vma_, _lma_) \
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| 228 |
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. = ALIGN( _vma_ , ALIGN_LMA ) ; \
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| 229 |
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_hal_data_section_start_vma = . ; \
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| 230 |
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.data . : _lma_ { \
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| 231 |
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*(.shdata*) *(.data*) *(.gnu.linkonce.d.*) *(.sdata) *(.gnu.linkonce.s.*) \
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| 232 |
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. = ALIGN (4); \
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| 233 |
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*(.2ram.*) \
|
| 234 |
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. = ALIGN (4); \
|
| 235 |
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KEEP(*( SORT (.ecos.table.*))); \
|
| 236 |
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. = ALIGN (4); \
|
| 237 |
|
|
} > _region_ \
|
| 238 |
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|
. = ALIGN(ALIGN_LMA); \
|
| 239 |
|
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_hal_data_section_start_lma = LOADADDR(.data) ; \
|
| 240 |
|
|
_hal_data_section_end_vma = . ; \
|
| 241 |
|
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_hal_data_section_size = _hal_data_section_end_vma - _hal_data_section_start_vma ; \
|
| 242 |
|
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_hal_data_section_end_lma = _hal_data_section_start_lma + _hal_data_section_size ; \
|
| 243 |
|
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_hal_bss_start = . ; \
|
| 244 |
|
|
.sbss . : { *(.sbss) *(.gnu.linkonce.sb.*) *(.scommon) } > _region_ \
|
| 245 |
|
|
. = ALIGN(ALIGN_LMA) ; \
|
| 246 |
|
|
.bss . : { *(.dynbss) *(.shbss) *(.bss*) *(.gnu.linkonce.b.*) *(COMMON) } > _region_ \
|
| 247 |
|
|
. = ALIGN(ALIGN_LMA) ; \
|
| 248 |
|
|
_hal_bss_end = . ; \
|
| 249 |
|
|
_hal_bss_size = _hal_bss_end - _hal_bss_start ;
|
| 250 |
|
|
|
| 251 |
|
|
// Some ColdFire processors have on-chip RAM. Allocate .iram_text, .iram_data
|
| 252 |
|
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// .iram_bss in the expected fashion.
|
| 253 |
|
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#define SECTION_iram(_region_, _vma_, _lma_) \
|
| 254 |
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. = ALIGN( _vma_ , ALIGN_LMA ) ; \
|
| 255 |
|
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_hal_iram_section_start_vma = . ; \
|
| 256 |
|
|
_hal_iram_text_section_start_vma = . ; \
|
| 257 |
|
|
.iram_text . : _lma_ { *(.iram_text) *(.iram_text.*) } > _region_ =0 \
|
| 258 |
|
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_hal_iram_text_section_start_lma = LOADADDR(.iram_text) ; \
|
| 259 |
|
|
. = ALIGN(ALIGN_LMA) ; \
|
| 260 |
|
|
_hal_iram_text_section_end_vma = . ; \
|
| 261 |
|
|
_hal_iram_text_section_size = _hal_iram_text_section_end_vma - _hal_iram_text_section_start_vma ; \
|
| 262 |
|
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_hal_iram_text_section_end_lma = _hal_iram_text_section_start_lma + _hal_iram_text_section_size ; \
|
| 263 |
|
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_hal_iram_data_section_start_vma = . ; \
|
| 264 |
|
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.iram_data . : AT(_hal_iram_text_section_end_lma) { *(.iram_data) *(.iram_data.*) } > _region_ =0 \
|
| 265 |
|
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. = ALIGN(ALIGN_LMA) ; \
|
| 266 |
|
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_hal_iram_data_section_start_lma = LOADADDR(.iram_data) ; \
|
| 267 |
|
|
_hal_iram_data_section_end_vma = . ; \
|
| 268 |
|
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_hal_iram_data_section_size = _hal_iram_data_section_end_vma - _hal_iram_data_section_start_vma ; \
|
| 269 |
|
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_hal_iram_data_section_end_lma = _hal_iram_data_section_start_lma + _hal_iram_data_section_size ; \
|
| 270 |
|
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_hal_iram_bss_section_start = . ; \
|
| 271 |
|
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_iram_bss . (NOLOAD) : { *(.iram_bss) *(.iram_bss.*) } > _region_ =0 \
|
| 272 |
|
|
. = ALIGN(ALIGN_LMA) ; \
|
| 273 |
|
|
_hal_iram_bss_section_end = . ; \
|
| 274 |
|
|
_hal_iram_section_end_vma = . ; \
|
| 275 |
|
|
_hal_iram_section_size = _hal_iram_section_end_vma - _hal_iram_section_start_vma ; \
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| 276 |
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_hal_iram_section_start_lma = LOADADDR(.iram_text) ; \
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| 277 |
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_hal_iram_section_end_lma = _hal_iram_section_start_lma + _hal_iram_text_section_size + \
|
| 278 |
|
|
_hal_iram_data_section_size ;
|
| 279 |
|
|
|
| 280 |
|
|
#define SECTIONS_END \
|
| 281 |
|
|
.stab 0 (NOLOAD) : { *(.stab) } \
|
| 282 |
|
|
.stabstr 0 (NOLOAD) : { *(.stabstr) } \
|
| 283 |
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|
.comment 0 (NOLOAD) : { *(.comment) } \
|
| 284 |
|
|
. = ALIGN(4); _end = .; PROVIDE (end = .);
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| 285 |
|
|
|
| 286 |
|
|
// These macros are for backwards compatibility. Some are redundant.
|
| 287 |
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|
#define SECTION_fixed_vectors(_region_, _vma_, _lma_) SECTION_ram_vectors(_region_, _vma_)
|
| 288 |
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#define SECTION_vectors(_region_, _vma_, _lma_) SECTION_m68k_start(_region_, _vma_)
|
| 289 |
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|
#define SECTION_text(_region_, _vma_, _lma_) SECTION_code(_region_, _vma_)
|
| 290 |
|
|
#define SECTION_rodata(_region_, _vma_, _lma_) SECTION_constants(_region_, _vma_)
|
| 291 |
|
|
#define SECTION_rodata1(_region_, _vma_, _lma_)
|
| 292 |
|
|
#define SECTION_fini(_region_, _vma_, _lma_)
|
| 293 |
|
|
#define SECTION_fixup(_region_, _vma_, _lma_)
|
| 294 |
|
|
#define SECTION_RELOCS(_region_, _vma_, _lma_)
|
| 295 |
|
|
#define SECTION_eh_frame(_region_, _vma_, _lma_)
|
| 296 |
|
|
#define SECTION_gcc_except_table(_region_, _vma_, _lma)
|
| 297 |
|
|
#define SECTION_got(_region_, _vma_, _lma_)
|
| 298 |
|
|
#define SECTION_sbss(_region_, _vma_, _lma_)
|
| 299 |
|
|
#define SECTION_bss(_region_, _vma_, _lma_)
|
| 300 |
|
|
|
| 301 |
|
|
#include
|
| 302 |
|
|
#include CYGHWR_MEMORY_LAYOUT_LDI
|
