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eCos using Codesourcery Toolchain
- From: "simon dot kallweit at intefo dot ch" <simon dot kallweit at intefo dot ch>
- To: Chris Zimman <czimman at bloomberg dot com>, ecos-discuss at ecos dot sourceware dot org
- Date: Tue, 23 Sep 2008 13:31:25 +0200
- Subject: [ECOS] eCos using Codesourcery Toolchain
- References: <F31C1582037F5041B0CD525FD870AE6A77450F@ny2545.corp.bloomberg.com> <48CF7928.1060703@intefo.ch> <F31C1582037F5041B0CD525FD870AE6A774512@ny2545.corp.bloomberg.com> <48CFAF14.3050502@intefo.ch> <F31C1582037F5041B0CD525FD870AE6A774513@ny2545.corp.bloomberg.com> <48CFC11F.5010402@intefo.ch> <F31C1582037F5041B0CD525FD870AE6A774514@ny2545.corp.bloomberg.com>
Hi Chris
Thanks again for your help. EABI seems to work fine so far. But I've run
in another problem with the codesourcery toolchain, might be cortex
specific though. I have a working RedBoot, but it crashes in a few
places, because code is compiled wrong. Here are the warning from the
linker:
/home/simon/ecos/tools/bin/../lib/gcc/arm-none-eabi/4.2.3/../../../../arm-none-eabi/bin/ld:
/home/simon/ecos/build/stm32_redboot_install/lib/extras.o: access beyond
end of merged section (-32599)
/home/simon/ecos/tools/bin/../lib/gcc/arm-none-eabi/4.2.3/../../../../arm-none-eabi/bin/ld:
/home/simon/ecos/build/stm32_redboot_install/lib/extras.o: access beyond
end of merged section (-32603)
/home/simon/ecos/tools/bin/../lib/gcc/arm-none-eabi/4.2.3/../../../../arm-none-eabi/bin/ld:
/home/simon/ecos/build/stm32_redboot_install/lib/extras.o: access beyond
end of merged section (-32603)
/home/simon/ecos/tools/bin/../lib/gcc/arm-none-eabi/4.2.3/../../../../arm-none-eabi/bin/ld:
/home/simon/ecos/build/stm32_redboot_install/lib/extras.o: access beyond
end of merged section (-32599)
/home/simon/ecos/tools/bin/../lib/gcc/arm-none-eabi/4.2.3/../../../../arm-none-eabi/bin/ld:
/home/simon/ecos/build/stm32_redboot_install/lib/extras.o: access beyond
end of merged section (-16335)
/home/simon/ecos/tools/bin/../lib/gcc/arm-none-eabi/4.2.3/../../../../arm-none-eabi/bin/ld:
/home/simon/ecos/build/stm32_redboot_install/lib/extras.o: access beyond
end of merged section (-16335)
/home/simon/ecos/tools/bin/../lib/gcc/arm-none-eabi/4.2.3/../../../../arm-none-eabi/bin/ld:
/home/simon/ecos/build/stm32_redboot_install/lib/extras.o: access beyond
end of merged section (-16303)
/home/simon/ecos/tools/bin/../lib/gcc/arm-none-eabi/4.2.3/../../../../arm-none-eabi/bin/ld:
/home/simon/ecos/build/stm32_redboot_install/lib/extras.o: access beyond
end of merged section (-16303)
/home/simon/ecos/tools/bin/../lib/gcc/arm-none-eabi/4.2.3/../../../../arm-none-eabi/bin/ld:
/home/simon/ecos/build/stm32_redboot_install/lib/extras.o: access beyond
end of merged section (-16295)
/home/simon/ecos/tools/bin/../lib/gcc/arm-none-eabi/4.2.3/../../../../arm-none-eabi/bin/ld:
/home/simon/ecos/build/stm32_redboot_install/lib/extras.o: access beyond
end of merged section (-16295)
/home/simon/ecos/tools/bin/../lib/gcc/arm-none-eabi/4.2.3/../../../../arm-none-eabi/bin/ld:
/home/simon/ecos/build/stm32_redboot_install/lib/extras.o: access beyond
end of merged section (-16263)
/home/simon/ecos/tools/bin/../lib/gcc/arm-none-eabi/4.2.3/../../../../arm-none-eabi/bin/ld:
/home/simon/ecos/build/stm32_redboot_install/lib/extras.o: access beyond
end of merged section (-16263)
One problem is the fis_usage() function:
fis_usage(char *why)
{
diag_printf("*** invalid 'fis' command: %s\n", why);
cmd_usage(__FIS_cmds_TAB__, &__FIS_cmds_TAB_END__, "fis ");
}
The pointer resolution of the string literal ("*** invalid ...") is
going wrong (r0 holds a wrong address), so diag_printf() corrupts memory
and the whole system crashes. If I replace the function with a marco,
the code works properly and I get a few less "access beyond" warnings.
There must be other places where things go wrong.
Any ideas here?
I attach my current linker script, as I suppose the mistake could be there.
Best regards,
Simon
//=============================================================================
//
// MLT linker script for ARM Cortex-M1/3
//
//=============================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//=============================================================================
#include <pkgconf/system.h>
STARTUP(vectors.o)
ENTRY(reset_vector)
INPUT(extras.o)
#if (__GNUC__ >= 3)
GROUP(libtarget.a libgcc.a libsupc++.a)
#else
GROUP(libtarget.a libgcc.a)
#endif
#if defined(__ARMEB__)
OUTPUT_FORMAT(elf32-bigarm)
#endif
#define MERGE_IN_RODATA *(.rodata*)
#define ALIGN_LMA 4
#define FOLLOWING(_section_) AT ((LOADADDR (_section_) + SIZEOF (_section_) + ALIGN_LMA - 1) & ~ (ALIGN_LMA - 1))
#define LMA_EQ_VMA
#define FORCE_OUTPUT . = .
// Some versions of gcc define "arm" which causes problems with .note.arm.ident
#undef arm
#define SECTIONS_BEGIN \
/* Debug information */ \
.debug_aranges 0 : { *(.debug_aranges) } \
.debug_pubnames 0 : { *(.debug_pubnames) } \
.debug_info 0 : { *(.debug_info) } \
.debug_abbrev 0 : { *(.debug_abbrev) } \
.debug_line 0 : { *(.debug_line) } \
.debug_frame 0 : { *(.debug_frame) } \
.debug_str 0 : { *(.debug_str) } \
.debug_loc 0 : { *(.debug_loc) } \
.debug_macinfo 0 : { *(.debug_macinfo) } \
.note.arm.ident 0 : { KEEP (*(.note.arm.ident)) }
#define SECTION_fixed_vectors(_region_, _vma_, _lma_) \
.fixed_vectors _vma_ : _lma_ \
{ FORCE_OUTPUT; KEEP (*(.fixed_vectors)) } \
> _region_
#define SECTION_rom_vectors(_region_, _vma_, _lma_) \
.rom_vectors _vma_ : _lma_ \
{ __rom_vectors_vma = ABSOLUTE(.); \
FORCE_OUTPUT; KEEP (*(.vectors)) } \
> _region_ \
__rom_vectors_lma = LOADADDR(.rom_vectors);
#define SECTION_text(_region_, _vma_, _lma_) \
.ARM.extab _vma_ : _lma_ \
{ PROVIDE (__stext = ABSOLUTE(.));_stext = ABSOLUTE(.) ; \
FORCE_OUTPUT; \
*(.ARM.extab* .gnu.linkonce.armextab.*) } > _region_ \
__exidx_start = ABSOLUTE(.); \
.ARM.exidx : FOLLOWING(.ARM.extab) { \
*(.ARM.exidx* .gnu.linkonce.armexidx.*) \
FORCE_OUTPUT; \
} > _region_ \
__exidx_end = ABSOLUTE(.); \
.text : FOLLOWING(.ARM.exidx) \
{ \
*(.text*) *(.gnu.warning) *(.gnu.linkonce.t.*) *(.init) \
*(.glue_7) *(.glue_7t) \
__CTOR_LIST__ = ABSOLUTE (.); \
KEEP (*(SORT (.ctors*))) __CTOR_END__ = ABSOLUTE (.); \
__DTOR_LIST__ = ABSOLUTE (.); \
KEEP (*(SORT (.dtors*))) __DTOR_END__ = ABSOLUTE (.); \
} > _region_ \
_etext = .; PROVIDE (__etext = .);
#define SECTION_fini(_region_, _vma_, _lma_) \
.fini _vma_ : _lma_ \
{ FORCE_OUTPUT; *(.fini) } \
> _region_
#define SECTION_rodata(_region_, _vma_, _lma_) \
.rodata _vma_ : _lma_ \
{ FORCE_OUTPUT; *(.rodata*) *(.gnu.linkonce.r.*) } \
> _region_
#define SECTION_rodata1(_region_, _vma_, _lma_) \
.rodata1 _vma_ : _lma_ \
{ FORCE_OUTPUT; *(.rodata1) } \
> _region_
#define SECTION_fixup(_region_, _vma_, _lma_) \
.fixup _vma_ : _lma_ \
{ FORCE_OUTPUT; *(.fixup) } \
> _region_
#define SECTION_gcc_except_table(_region_, _vma_, _lma_) \
.gcc_except_table _vma_ : _lma_ \
{ FORCE_OUTPUT; \
KEEP(*(.gcc_except_table)) \
*(.gcc_except_table.*) \
} > _region_
#define SECTION_eh_frame(_region_, _vma_, _lma_) \
.eh_frame _vma_ : _lma_ \
{ \
FORCE_OUTPUT; __EH_FRAME_BEGIN__ = .; \
KEEP(*(.eh_frame)) \
__FRAME_END__ = .; \
. = . + 8; \
} > _region_ = 0
#define SECTION_RELOCS(_region_, _vma_, _lma_) \
.rel.text : \
{ \
*(.rel.text) \
*(.rel.text.*) \
*(.rel.gnu.linkonce.t*) \
} > _region_ \
.rela.text : \
{ \
*(.rela.text) \
*(.rela.text.*) \
*(.rela.gnu.linkonce.t*) \
} > _region_ \
.rel.data : \
{ \
*(.rel.data) \
*(.rel.data.*) \
*(.rel.gnu.linkonce.d*) \
} > _region_ \
.rela.data : \
{ \
*(.rela.data) \
*(.rela.data.*) \
*(.rela.gnu.linkonce.d*) \
} > _region_ \
.rel.rodata : \
{ \
*(.rel.rodata) \
*(.rel.rodata.*) \
*(.rel.gnu.linkonce.r*) \
} > _region_ \
.rela.rodata : \
{ \
*(.rela.rodata) \
*(.rela.rodata.*) \
*(.rela.gnu.linkonce.r*) \
} > _region_ \
.rel.got : { *(.rel.got) } > _region_ \
.rela.got : { *(.rela.got) } > _region_ \
.rel.ctors : { *(.rel.ctors) } > _region_ \
.rela.ctors : { *(.rela.ctors) } > _region_ \
.rel.dtors : { *(.rel.dtors) } > _region_ \
.rela.dtors : { *(.rela.dtors) } > _region_ \
.rel.init : { *(.rel.init) } > _region_ \
.rela.init : { *(.rela.init) } > _region_ \
.rel.fini : { *(.rel.fini) } > _region_ \
.rela.fini : { *(.rela.fini) } > _region_ \
.rel.bss : { *(.rel.bss) } > _region_ \
.rela.bss : { *(.rela.bss) } > _region_ \
.rel.plt : { *(.rel.plt) } > _region_ \
.rela.plt : { *(.rela.plt) } > _region_ \
.rel.dyn : { *(.rel.dyn) } > _region_
#define SECTION_got(_region_, _vma_, _lma_) \
.got _vma_ : _lma_ \
{ \
FORCE_OUTPUT; *(.got.plt) *(.got) \
_GOT1_START_ = ABSOLUTE (.); *(.got1) _GOT1_END_ = ABSOLUTE (.); \
_GOT2_START_ = ABSOLUTE (.); *(.got2) _GOT2_END_ = ABSOLUTE (.); \
} > _region_
#define SECTION_mmu_tables(_region_, _vma_, _lma_) \
.mmu_tables _vma_ : _lma_ \
{ FORCE_OUTPUT; *(.mmu_tables) } \
> _region_
#define SECTION_sram(_region_, _vma_, _lma_) \
.sram _vma_ : _lma_ \
{ FORCE_OUTPUT; *(.sram*) } \
> _region_
#define SECTION_data(_region_, _vma_, _lma_) \
.data _vma_ : _lma_ \
{ __ram_data_start = ABSOLUTE (.); \
*(.data*) *(.data1) *(.gnu.linkonce.d.*) MERGE_IN_RODATA \
. = ALIGN (4); \
KEEP(*( SORT (.ecos.table.*))) ; \
. = ALIGN (4); \
__init_array_start__ = ABSOLUTE (.); KEEP (*(SORT (.init_array.*))) \
KEEP (*(SORT (.init_array))) __init_array_end__ = ABSOLUTE (.); \
*(.dynamic) *(.sdata*) *(.gnu.linkonce.s.*) \
. = ALIGN (4); *(.2ram.*) } \
> _region_ \
__rom_data_start = LOADADDR (.data); \
__ram_data_end = .; PROVIDE (__ram_data_end = .); \
_edata = .; PROVIDE (edata = .); \
PROVIDE (__rom_data_end = LOADADDR (.data) + SIZEOF(.data));
#define SECTION_bss(_region_, _vma_, _lma_) \
.bss _vma_ : _lma_ \
{ __bss_start = ABSOLUTE (.); \
*(.scommon) *(.dynsbss) *(.sbss*) *(.gnu.linkonce.sb.*) \
*(.dynbss) *(.bss*) *(.gnu.linkonce.b.*) *(COMMON) \
__bss_end = ABSOLUTE (.); } \
> _region_
#define SECTIONS_END . = ALIGN(4); _end = .; PROVIDE (end = .);
#include <pkgconf/hal_cortexm.h>
#include CYGHWR_MEMORY_LAYOUT_LDI
--
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