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skrzyp |
//=============================================================================
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//
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// MLT linker script for ARM
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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) 1998, 1999, 2000, 2001, 2002, 2005, 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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#include
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#include
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STARTUP(vectors.o)
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ENTRY(reset_vector)
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INPUT(extras.o)
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GROUP( CYGBLD_HAL_LINKER_GROUPED_LIBS )
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#if defined(__ARMEB__)
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OUTPUT_FORMAT(elf32-bigarm)
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#endif
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#if defined(CYG_HAL_STARTUP_ROM) \
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&& defined(CYGPKG_HAL_ARM_PID) \
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&& defined(__ARMEB__)
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// Note: This is only needed when the PID board is used in BE mode without
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// the proper ROM controller part.
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//
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// In big-endian mode, merge .RODATA sections into the .DATA section. This
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// causes the data in these sections to be copied to RAM. When the CPU
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// makes byte or halfword access to RAM, A0/A1 are modified correctly.
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// This does not happen on ROM access (unless the proper ROM controller
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// is used).
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//
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#define MERGE_IN_RODATA *(.rodata*)
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#define CYGPRI_PID_BE_WORKAROUND
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#else
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// Keep RODATA in separate sections.
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#define MERGE_IN_RODATA
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#undef CYGPRI_PID_BE_WORKAROUND
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#endif
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// ALIGN_LMA is 4, but the AAPCS now requires that double word types
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// be aligned to 8, which means some input sections can be marked as needing
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// 8-byte alignment, even text ones (consider literal data).
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// This is quite a big backward-compatibility problem for us as a zillion
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// platform mlt files for ARM assume that 4-byte alignment is adequate. Really
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// this is a bigger problem for the VMA but of course the LMA and VMA have to
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// move in sync, since things like .data are just copied as a block. Still,
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// ALIGN_LMA as 4 is probably best, but there can be problems with this.
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#define ALIGN_LMA 4
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#define AAPCS_ALIGN 8
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#define FOLLOWING_ALIGNED(_section_, _align_) AT ((LOADADDR (_section_) + SIZEOF (_section_) + (_align_) - 1) & ~ ((_align_) - 1))
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#define FOLLOWING(_section_) FOLLOWING_ALIGNED(_section_, ALIGN_LMA)
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#define LMA_EQ_VMA
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#define FORCE_OUTPUT . = .
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// Some versions of gcc define "arm" which causes problems with .note.arm.ident
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#undef arm
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#define SECTIONS_BEGIN \
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/* Debug information */ \
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.debug_aranges 0 : { *(.debug_aranges) } \
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.debug_pubnames 0 : { *(.debug_pubnames) } \
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.debug_info 0 : { *(.debug_info) } \
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.debug_abbrev 0 : { *(.debug_abbrev) } \
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.debug_line 0 : { *(.debug_line) } \
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.debug_frame 0 : { *(.debug_frame) } \
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.debug_str 0 : { *(.debug_str) } \
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.debug_loc 0 : { *(.debug_loc) } \
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.debug_macinfo 0 : { *(.debug_macinfo) } \
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.note.arm.ident 0 : { KEEP (*(.note.arm.ident)) } \
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/DISCARD/ 0 : { *(.fini_array*) }
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| 105 |
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// Following not used unless CYGHWR_HAL_ARM_SEPARATE_VSR_TABLE
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// defined in hal_platform_setup.h. Otherwise vsr table
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// goes in .fixed_vectors.
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#define SECTION_hal_vsr_table(_region_, _vma_, _lma_) \
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.hal_vsr_table _vma_ : _lma_ \
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{ FORCE_OUTPUT; KEEP (*(.hal_vsr_table)) } \
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> _region_
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#define SECTION_fixed_vectors(_region_, _vma_, _lma_) \
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.fixed_vectors _vma_ : _lma_ \
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{ FORCE_OUTPUT; KEEP (*(.fixed_vectors)) } \
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> _region_
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#define SECTION_rom_vectors(_region_, _vma_, _lma_) \
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.rom_vectors _vma_ : _lma_ \
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{ __rom_vectors_vma = ABSOLUTE(.); \
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FORCE_OUTPUT; KEEP (*(.vectors)) } \
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> _region_ \
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__rom_vectors_lma = LOADADDR(.rom_vectors);
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/* The following two sections are used for C++ exception handling
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* only and so can be discarded if not used for that.
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* These are both included directly from the SECTION_text
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* definition and so, for now, are not expected to be listed
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* separately in mlt files.
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*/
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#ifdef CYGPKG_LIBSTDCXX
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#define SECTION_ARM_extab(_region_, _vma_, _lma_) \
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.ARM.extab _vma_ : _lma_ \
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{ PROVIDE (__stext = ABSOLUTE(.)); _stext = ABSOLUTE(.) ; \
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FORCE_OUTPUT; \
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*(.ARM.extab* .gnu.linkonce.armextab.*) } > _region_
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#define SECTION_ARM_exidx(_region_, _vma_, _lma_) \
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. = _vma_; \
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. = ALIGN(AAPCS_ALIGN); \
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__exidx_start = ABSOLUTE(.); \
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.ARM.exidx ALIGN(AAPCS_ALIGN) : _lma_ { \
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*(.ARM.exidx* .gnu.linkonce.armexidx.*) \
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| 145 |
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FORCE_OUTPUT; \
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| 146 |
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} > _region_ \
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__exidx_end = ABSOLUTE(.);
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| 148 |
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| 149 |
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#else
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| 150 |
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#define SECTION_ARM_extab(_region_, _vma_, _lma_) \
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.ARM.extab _vma_ : _lma_ \
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{ PROVIDE (__stext = ABSOLUTE(.)); _stext = ABSOLUTE(.) ; \
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FORCE_OUTPUT; \
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| 154 |
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} > _region_ \
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| 155 |
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/DISCARD/ 0 : { *(.ARM.extab* .gnu.linkonce.armextab.*) }
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| 156 |
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| 157 |
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#define SECTION_ARM_exidx(_region_, _vma_, _lma_) \
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. = _vma_; \
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. = ALIGN(AAPCS_ALIGN); \
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__exidx_start = ABSOLUTE(.); \
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| 161 |
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.ARM.exidx ALIGN(AAPCS_ALIGN) : _lma_ { \
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| 162 |
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FORCE_OUTPUT; \
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| 163 |
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} > _region_ \
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__exidx_end = ABSOLUTE(.); \
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/DISCARD/ 0 : { *(.ARM.exidx* .gnu.linkonce.armexidx.*) }
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| 166 |
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#endif
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| 167 |
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| 168 |
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| 169 |
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| 170 |
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// We slot in the .ARM.extab and .ARM.exidx sections first. They
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| 171 |
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// need to be close to .text due to their relocations which may
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| 172 |
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// want small offsets - .rodata may be somewhere very different.
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// This approach also allows forward compatibility with targets
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// which haven't used the EABI before (no new SECTION_xxx definition
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// to use).
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| 176 |
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// One glitch is that the AAPCS can require up to 8-byte alignment
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| 177 |
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// for double word types. For sections after the first (for which we
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| 178 |
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// "trust" the MLT files (probably a mistake)), we need to
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| 179 |
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// ensure the subsequent sections' VMA and LMA move in sync, which
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| 180 |
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// means keeping the same alignment, and thus since for example literal
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| 181 |
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// data in .text can require up to 8 byte alignment, the LMA must also
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| 182 |
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// be 8 byte aligned.
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| 183 |
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| 184 |
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#define SECTION_text(_region_, _vma_, _lma_) \
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SECTION_ARM_extab(_region_, _vma_, _lma_) \
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SECTION_ARM_exidx(_region_, ALIGN(AAPCS_ALIGN), FOLLOWING_ALIGNED(.ARM.extab, AAPCS_ALIGN)) \
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.text ALIGN(AAPCS_ALIGN) : FOLLOWING_ALIGNED(.ARM.exidx, AAPCS_ALIGN) \
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| 188 |
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{ \
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| 189 |
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*(.text*) *(.gnu.warning) *(.gnu.linkonce.t.*) *(.init) \
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*(.glue_7) *(.glue_7t) \
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| 191 |
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__CTOR_LIST__ = ABSOLUTE (.); KEEP (*(SORT (.ctors*))) __CTOR_END__ = ABSOLUTE (.); \
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__DTOR_LIST__ = ABSOLUTE (.); KEEP (*(SORT (.dtors*))) __DTOR_END__ = ABSOLUTE (.); \
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} > _region_ \
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| 194 |
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_etext = .; PROVIDE (__etext = .);
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| 195 |
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| 196 |
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#define SECTION_fini(_region_, _vma_, _lma_) \
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.fini _vma_ : _lma_ \
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| 198 |
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{ FORCE_OUTPUT; *(.fini) } \
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| 199 |
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> _region_
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| 200 |
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| 201 |
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#if defined(CYGPRI_PID_BE_WORKAROUND)
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| 202 |
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#define SECTION_rodata(_region_, _vma_, _lma_)
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| 203 |
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#define SECTION_rodata1(_region_, _vma_, _lma_)
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| 204 |
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#else
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| 205 |
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#define SECTION_rodata(_region_, _vma_, _lma_) \
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.rodata _vma_ : _lma_ \
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| 207 |
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{ FORCE_OUTPUT; *(.rodata*) *(.gnu.linkonce.r.*) } \
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| 208 |
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> _region_
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| 209 |
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| 210 |
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#define SECTION_rodata1(_region_, _vma_, _lma_) \
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| 211 |
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.rodata1 _vma_ : _lma_ \
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| 212 |
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{ FORCE_OUTPUT; *(.rodata1) } \
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| 213 |
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> _region_
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| 214 |
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#endif // CYGPRI_PID_BE_WORKAROUND
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| 215 |
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| 216 |
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#define SECTION_fixup(_region_, _vma_, _lma_) \
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| 217 |
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.fixup _vma_ : _lma_ \
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| 218 |
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{ FORCE_OUTPUT; *(.fixup) } \
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| 219 |
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> _region_
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| 220 |
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| 221 |
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#ifdef CYGPKG_LIBSTDCXX
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| 222 |
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/* We want to discard C++ exception frame data if we don't have the
|
| 223 |
|
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* C++ support to use it. So there are two versions of the section
|
| 224 |
|
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* definitions for .gcc_except_table and .eh_frame, one which keeps
|
| 225 |
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* them, the other discards.
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| 226 |
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*/
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| 227 |
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#define SECTION_gcc_except_table(_region_, _vma_, _lma_) \
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| 228 |
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.gcc_except_table _vma_ : _lma_ \
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| 229 |
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{ FORCE_OUTPUT; \
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| 230 |
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KEEP(*(.gcc_except_table)) \
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| 231 |
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*(.gcc_except_table.*) \
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| 232 |
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} > _region_
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| 233 |
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| 234 |
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#define SECTION_eh_frame(_region_, _vma_, _lma_) \
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| 235 |
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.eh_frame _vma_ : _lma_ \
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| 236 |
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{ \
|
| 237 |
|
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FORCE_OUTPUT; __EH_FRAME_BEGIN__ = .; \
|
| 238 |
|
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KEEP(*(.eh_frame)) \
|
| 239 |
|
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__FRAME_END__ = .; \
|
| 240 |
|
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. = . + 8; \
|
| 241 |
|
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} > _region_ = 0
|
| 242 |
|
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#else
|
| 243 |
|
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#define SECTION_gcc_except_table(_region_, _vma_, _lma_) \
|
| 244 |
|
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.gcc_except_table _vma_ : _lma_ \
|
| 245 |
|
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{ FORCE_OUTPUT; \
|
| 246 |
|
|
} > _region_ \
|
| 247 |
|
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/DISCARD/ 0 : { *(.gcc_except_table*) }
|
| 248 |
|
|
|
| 249 |
|
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#define SECTION_eh_frame(_region_, _vma_, _lma_) \
|
| 250 |
|
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.eh_frame _vma_ : _lma_ \
|
| 251 |
|
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{ \
|
| 252 |
|
|
FORCE_OUTPUT; __EH_FRAME_BEGIN__ = .; \
|
| 253 |
|
|
__FRAME_END__ = .; \
|
| 254 |
|
|
} > _region_ \
|
| 255 |
|
|
/DISCARD/ 0 : { *(.eh_frame) }
|
| 256 |
|
|
#endif
|
| 257 |
|
|
|
| 258 |
|
|
#define SECTION_RELOCS(_region_, _vma_, _lma_) \
|
| 259 |
|
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.rel.text : \
|
| 260 |
|
|
{ \
|
| 261 |
|
|
*(.rel.text) \
|
| 262 |
|
|
*(.rel.text.*) \
|
| 263 |
|
|
*(.rel.gnu.linkonce.t*) \
|
| 264 |
|
|
} > _region_ \
|
| 265 |
|
|
.rela.text : \
|
| 266 |
|
|
{ \
|
| 267 |
|
|
*(.rela.text) \
|
| 268 |
|
|
*(.rela.text.*) \
|
| 269 |
|
|
*(.rela.gnu.linkonce.t*) \
|
| 270 |
|
|
} > _region_ \
|
| 271 |
|
|
.rel.data : \
|
| 272 |
|
|
{ \
|
| 273 |
|
|
*(.rel.data) \
|
| 274 |
|
|
*(.rel.data.*) \
|
| 275 |
|
|
*(.rel.gnu.linkonce.d*) \
|
| 276 |
|
|
} > _region_ \
|
| 277 |
|
|
.rela.data : \
|
| 278 |
|
|
{ \
|
| 279 |
|
|
*(.rela.data) \
|
| 280 |
|
|
*(.rela.data.*) \
|
| 281 |
|
|
*(.rela.gnu.linkonce.d*) \
|
| 282 |
|
|
} > _region_ \
|
| 283 |
|
|
.rel.rodata : \
|
| 284 |
|
|
{ \
|
| 285 |
|
|
*(.rel.rodata) \
|
| 286 |
|
|
*(.rel.rodata.*) \
|
| 287 |
|
|
*(.rel.gnu.linkonce.r*) \
|
| 288 |
|
|
} > _region_ \
|
| 289 |
|
|
.rela.rodata : \
|
| 290 |
|
|
{ \
|
| 291 |
|
|
*(.rela.rodata) \
|
| 292 |
|
|
*(.rela.rodata.*) \
|
| 293 |
|
|
*(.rela.gnu.linkonce.r*) \
|
| 294 |
|
|
} > _region_ \
|
| 295 |
|
|
.rel.got : { *(.rel.got) } > _region_ \
|
| 296 |
|
|
.rela.got : { *(.rela.got) } > _region_ \
|
| 297 |
|
|
.rel.ctors : { *(.rel.ctors) } > _region_ \
|
| 298 |
|
|
.rela.ctors : { *(.rela.ctors) } > _region_ \
|
| 299 |
|
|
.rel.dtors : { *(.rel.dtors) } > _region_ \
|
| 300 |
|
|
.rela.dtors : { *(.rela.dtors) } > _region_ \
|
| 301 |
|
|
.rel.init : { *(.rel.init) } > _region_ \
|
| 302 |
|
|
.rela.init : { *(.rela.init) } > _region_ \
|
| 303 |
|
|
.rel.fini : { *(.rel.fini) } > _region_ \
|
| 304 |
|
|
.rela.fini : { *(.rela.fini) } > _region_ \
|
| 305 |
|
|
.rel.bss : { *(.rel.bss) } > _region_ \
|
| 306 |
|
|
.rela.bss : { *(.rela.bss) } > _region_ \
|
| 307 |
|
|
.rel.plt : { *(.rel.plt) } > _region_ \
|
| 308 |
|
|
.rela.plt : { *(.rela.plt) } > _region_ \
|
| 309 |
|
|
.rel.dyn : { *(.rel.dyn) } > _region_
|
| 310 |
|
|
|
| 311 |
|
|
#define SECTION_got(_region_, _vma_, _lma_) \
|
| 312 |
|
|
.got _vma_ : _lma_ \
|
| 313 |
|
|
{ \
|
| 314 |
|
|
FORCE_OUTPUT; *(.got.plt) *(.got) \
|
| 315 |
|
|
_GOT1_START_ = ABSOLUTE (.); *(.got1) _GOT1_END_ = ABSOLUTE (.); \
|
| 316 |
|
|
_GOT2_START_ = ABSOLUTE (.); *(.got2) _GOT2_END_ = ABSOLUTE (.); \
|
| 317 |
|
|
} > _region_
|
| 318 |
|
|
|
| 319 |
|
|
#define SECTION_mmu_tables(_region_, _vma_, _lma_) \
|
| 320 |
|
|
.mmu_tables _vma_ : _lma_ \
|
| 321 |
|
|
{ FORCE_OUTPUT; *(.mmu_tables) } \
|
| 322 |
|
|
> _region_
|
| 323 |
|
|
|
| 324 |
|
|
#define SECTION_sram(_region_, _vma_, _lma_) \
|
| 325 |
|
|
.sram _vma_ : _lma_ \
|
| 326 |
|
|
{ FORCE_OUTPUT; *(.sram*) } \
|
| 327 |
|
|
> _region_
|
| 328 |
|
|
|
| 329 |
|
|
#define SECTION_data(_region_, _vma_, _lma_) \
|
| 330 |
|
|
.data _vma_ : _lma_ \
|
| 331 |
|
|
{ __ram_data_start = ABSOLUTE (.); \
|
| 332 |
|
|
*(.data*) *(.data1) *(.gnu.linkonce.d.*) MERGE_IN_RODATA \
|
| 333 |
|
|
. = ALIGN (4); \
|
| 334 |
|
|
KEEP(*( SORT (.ecos.table.*))) ; \
|
| 335 |
|
|
. = ALIGN (4); \
|
| 336 |
|
|
__init_array_start__ = ABSOLUTE (.); KEEP (*(SORT (.init_array.*))) \
|
| 337 |
|
|
KEEP (*(SORT (.init_array))) __init_array_end__ = ABSOLUTE (.); \
|
| 338 |
|
|
*(.dynamic) *(.sdata*) *(.gnu.linkonce.s.*) \
|
| 339 |
|
|
. = ALIGN (4); *(.2ram.*) } \
|
| 340 |
|
|
> _region_ \
|
| 341 |
|
|
__rom_data_start = LOADADDR (.data); \
|
| 342 |
|
|
__ram_data_end = .; PROVIDE (__ram_data_end = .); _edata = .; PROVIDE (edata = .); \
|
| 343 |
|
|
PROVIDE (__rom_data_end = LOADADDR (.data) + SIZEOF(.data));
|
| 344 |
|
|
|
| 345 |
|
|
#define SECTION_bss(_region_, _vma_, _lma_) \
|
| 346 |
|
|
.bss _vma_ : _lma_ \
|
| 347 |
|
|
{ __bss_start = ABSOLUTE (.); \
|
| 348 |
|
|
*(.scommon) *(.dynsbss) *(.sbss*) *(.gnu.linkonce.sb.*) \
|
| 349 |
|
|
*(.dynbss) *(.bss*) *(.gnu.linkonce.b.*) *(COMMON) \
|
| 350 |
|
|
__bss_end = ABSOLUTE (.); } \
|
| 351 |
|
|
> _region_
|
| 352 |
|
|
|
| 353 |
|
|
#define SECTIONS_END . = ALIGN(4); _end = .; PROVIDE (end = .);
|
| 354 |
|
|
|
| 355 |
|
|
#include
|
| 356 |
|
|
#include CYGHWR_MEMORY_LAYOUT_LDI
|
