Symbian: unalighned relocations for pointers-to-members

Symbian: unalighned relocations for pointers-to-members

[Фёдар Стрыжнёў]

Hello. I maintain ScummVM port for Symbian Series 60v3. ScummVM is a complete rewrite of hundreds old games' executables and is not an emulator. It's free and opensource.

Last year, when I prepared a version 2.2.0 in the release, it was faced with the fact that when the Ultima engine is turned on in the executable file (supports Ultima 1, 4, 6, 8), it does not start. Ultima 4 & 6 support disabling allowed SCUMMVM. In the spring of this year, after some changes in the source code Ultima, the elf2e32 utility has begun to complete the work with the error "Line 427". To clarify the causes of the error, a rebeling of the code responsible for the support of Ultima 4 & 6 was carried out.
The rebel passed as follows:
1. Removed ultima.lib (Static Library)
2. Left the entry point, deleted all other files associated with Ultima 4/6 from the project assembly
3. Collected ultima.lib, then collected scummvm.exe
4. Added files to the project and continued to collect until the error did not jump out.

I have done these steps first for Ultima 4, then - 6. In both cases, the reason was pointer-to-member array declaration.
Ultima 4 - https://github.com/scummvm/scummvm/blob/master/engines/ultima/ultima4/game/item.cpp#L49
Ultima 6 - https://github.com/scummvm/scummvm/blob/master/engines/ultima/nuvie/usecode/u6_object_types.h#L28

elf2e32 creates E32 aka EPOC32 aka Symbian exe and dlls from elf.

Analysis of the elf2e32 source code indicated the reason - when checking the created file, unaligned relocations were found. After modifying the source code, the elf2e32 was printed unaligned relocations. I redirect to file "readelf -a <name of elf>". I find several random Elf32_Rel r_offset from elf2e32 in readelf output. GCC 5.4.0 and 11.2.0 give same result.

Compiler options taken from Eclipse output and they are same for every source file: arm-none-symbianelf-gcc    -O2 -fno-unit-at-a-time  -fexceptions -Wall -Wno-unknown-pragmas   -march=armv5t      -mapcs-frame -mthumb-interwork -pipe -nostdinc -c  -Wno-multichar -Wno-unused -Wno-format -fsigned-char -fno-asynchronous-unwind-tables -std=c++11 -v -pipe -Wno-multichar -Wno-reorder -Wno-unused -Wno-format -fsigned-char -Wno-psabi -marm  -msoft-float  -D__MARM_INTERWORK__   -DNDEBUG -D_UNICODE -D__GCCE__  -D__SYMBIAN32__ -D__S60_50__ -D__S60_3X__ -D__SERIES60_3X__ -D__GCCE__ -D__EPOC32__ -D__MARM__ -D__EABI__ -D__MARM_ARMV5__ -D__EXE__ -DENABLE_CGE -DENABLE_ULTIMA -DENABLE_ULTIMA6 -DS60 -DS60V3 -DSDL_BACKEND -DENABLE_VKEYBD -DUSE_TRANSLATION -DNONSTANDARD_PORT -DDISABLE_FANCY_THEMES -DUSE_A52 -DUSE_BINK -DUSE_FAAD -DUSE_FLAC -DUSE_FREETYPE2 -DUSE_JPEG -DUSE_MAD -DUSE_MPEG2 -DUSE_PNG -DUSE_THEORADEC
 -DUSE_TREMOR -DUSE_ZLIB -D__SUPPORT_CPP_EXCEPTIONS__ -D__MARM_ARMV5__  -D__PRODUCT_INCLUDE__=\"/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh\"    -x c++ -Wno-ctor-dtor-privacy -fpermissive -std=c++14 -include /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/GCCE.h  -I /Symbian/Projects/SDL/scummvm/base -I /Symbian/Projects/SDL/scummvm/engines  -I /Symbian/Projects/SDL/scummvm  -I /Symbian/Projects/SDL/scummvm/gui  -I /Symbian/Projects/SDL/scummvm/audio  -I /Symbian/Projects/SDL/scummvm/backends/platform/symbian/src -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/freetype -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/mpeg2dec -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/jpeg
 -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/png -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/ESDL -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/ZLIB -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/libc -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/theora -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/tremor -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/site -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include -I /Symbian/Projects/SDL/scummvm/backends/platform/symbian/src -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant -I "d:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include" -o /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/version.o /Symbian/Projects/SDL/scummvm/base/version.cpp
Using built-in specs.
COLLECT_GCC=arm-none-symbianelf-gcc
Target: arm-none-symbianelf
Configured with: ../gcc-11.2.0/./configure --target=arm-none-symbianelf --prefix=/usr/local/gcc-11.2.0 --without-headers --enable-languages=c,c++,lto --enable-poison-system-directories --enable-lto --with-newlib --enable-long-long --with-libiconv-prefix=/usr/local --with-dwarf2 --enable-interwork --enable-tls --enable-multilib --disable-hosted-libstdcxx --disable-libstdcxx-pch --disable-option-checking --disable-threads --disable-nls --disable-win32-registry --disable-libssp --disable-shared --enable-wchar_t --enable-extra-sgxxlite-multilibs --enable-c99 --with-static-standard-libraries
Thread model: single
Supported LTO compression algorithms: zlib
gcc version 11.2.0 (GCC)
COLLECT_GCC_OPTIONS='-O2' '-fno-unit-at-a-time' '-fexceptions' '-Wall' '-Wno-unknown-pragmas'  '-mapcs-frame' '-mthumb-interwork' '-pipe' '-nostdinc' '-c' '-Wformat=0' '-fno-asynchronous-unwind-tables' '-std=c++11' '-v' '-pipe' '-Wno-multichar' '-Wno-reorder' '-Wno-unused' '-Wformat=0' '-fsigned-char' '-Wno-psabi' '-marm' '-mfloat-abi=soft' '-D' '__MARM_INTERWORK__' '-D' 'NDEBUG' '-D' '_UNICODE' '-D' '__GCCE__' '-D' '__SYMBIAN32__' '-D' '__S60_50__' '-D' '__S60_3X__' '-D' '__SERIES60_3X__' '-D' '__GCCE__' '-D' '__EPOC32__' '-D' '__MARM__' '-D' '__EABI__' '-D' '__MARM_ARMV5__' '-D' '__EXE__' '-D' 'ENABLE_CGE' '-D' 'ENABLE_ULTIMA' '-D' 'ENABLE_ULTIMA6' '-D' 'S60' '-D' 'S60V3' '-D' 'SDL_BACKEND' '-D' 'ENABLE_VKEYBD' '-D' 'USE_TRANSLATION' '-D' 'NONSTANDARD_PORT' '-D' 'DISABLE_FANCY_THEMES' '-D' 'USE_A52' '-D' 'USE_BINK' '-D' 'USE_FAAD' '-D' 'USE_FLAC' '-D' 'USE_FREETYPE2' '-D' 'USE_JPEG' '-D' 'USE_MAD' '-D' 'USE_MPEG2' '-D' 'USE_PNG' '-D' 'USE_THEORADEC'
 '-D' 'USE_TREMOR' '-D' 'USE_ZLIB' '-D' '__SUPPORT_CPP_EXCEPTIONS__' '-D' '__MARM_ARMV5__' '-D' '__PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh"' '-Wno-ctor-dtor-privacy' '-fpermissive' '-std=c++14' '-include' '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h' '-I' '/Symbian/Projects/SDL/scummvm/base' '-I' '/Symbian/Projects/SDL/scummvm/engines' '-I' '/Symbian/Projects/SDL/scummvm' '-I' '/Symbian/Projects/SDL/scummvm/gui' '-I' '/Symbian/Projects/SDL/scummvm/audio' '-I' '/Symbian/Projects/SDL/scummvm/backends/platform/symbian/src' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/freetype' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/mpeg2dec' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/jpeg' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/png' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/esdl'
 '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/zlib' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/libc' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/theora' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/tremor' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/site' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include' '-I' '/Symbian/Projects/SDL/scummvm/backends/platform/symbian/src' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant' '-I' 'd:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include' '-o' '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/version.o' '-mlibarch=armv5t' '-march=armv5t' '-dumpdir' '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/'
 d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/arm-none-symbianelf/11.2.0/cc1plus.exe -quiet -nostdinc -v -I /Symbian/Projects/SDL/scummvm/base -I /Symbian/Projects/SDL/scummvm/engines -I /Symbian/Projects/SDL/scummvm -I /Symbian/Projects/SDL/scummvm/gui -I /Symbian/Projects/SDL/scummvm/audio -I /Symbian/Projects/SDL/scummvm/backends/platform/symbian/src -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/freetype -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/mpeg2dec -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/jpeg -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/png -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/esdl -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/zlib -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/libc -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/theora -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/tremor -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/site
 -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include -I /Symbian/Projects/SDL/scummvm/backends/platform/symbian/src -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant -I d:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include -iprefix d:\mingw\msys\1.0\local\gcc-11.2.0\bin\../lib/gcc/arm-none-symbianelf/11.2.0/ -D__USES_INITFINI__ -D __MARM_INTERWORK__ -D NDEBUG -D _UNICODE -D __GCCE__ -D __SYMBIAN32__ -D __S60_50__ -D __S60_3X__ -D __SERIES60_3X__ -D __GCCE__ -D __EPOC32__ -D __MARM__ -D __EABI__ -D __MARM_ARMV5__ -D __EXE__ -D ENABLE_CGE -D ENABLE_ULTIMA -D ENABLE_ULTIMA6 -D S60 -D S60V3 -D SDL_BACKEND -D ENABLE_VKEYBD -D USE_TRANSLATION -D NONSTANDARD_PORT -D DISABLE_FANCY_THEMES -D USE_A52 -D USE_BINK -D USE_FAAD -D USE_FLAC -D USE_FREETYPE2 -D USE_JPEG -D USE_MAD -D USE_MPEG2 -D USE_PNG -D USE_THEORADEC -D USE_TREMOR
 -D USE_ZLIB -D __SUPPORT_CPP_EXCEPTIONS__ -D __MARM_ARMV5__ -D __PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh" -include /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h /Symbian/Projects/SDL/scummvm/base/version.cpp -fno-builtin -fvisibility=hidden -fno-short-enums -fshort-wchar -quiet -dumpdir /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/ -dumpbase version.cpp -dumpbase-ext .cpp -mapcs-frame -mthumb-interwork -marm -mfloat-abi=soft -mlibarch=armv5t -march=armv5t -O2 -Wall -Wno-unknown-pragmas -Wformat=0 -Wno-multichar -Wno-reorder -Wno-unused -Wformat=0 -Wno-psabi -Wno-ctor-dtor-privacy -std=c++11 -std=c++14 -version -fno-unit-at-a-time -fexceptions -fno-asynchronous-unwind-tables -fsigned-char -fpermissive -fno-builtin -fvisibility=hidden -fno-short-enums -fshort-wchar -o - |
 d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/bin/as.exe -march=armv5t -mapcs-frame -mfpu=vfp -mthumb-interwork -mfloat-abi=soft -meabi=5 -o /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/version.o
GNU C++14 (GCC) version 11.2.0 (arm-none-symbianelf)
	compiled by GNU C version 6.3.0, GMP version 6.1.0, MPFR version 4.1.0, MPC version 1.2.1, isl version isl-0.16.1-GMP

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring duplicate directory "/Symbian/Projects/SDL/scummvm/backends/platform/symbian/src"
#include "..." search starts here:
#include <...> search starts here:
 /Symbian/Projects/SDL/scummvm/base
 /Symbian/Projects/SDL/scummvm/engines
 /Symbian/Projects/SDL/scummvm
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End of search list.
GNU C++14 (GCC) version 11.2.0 (arm-none-symbianelf)
	compiled by GNU C version 6.3.0, GMP version 6.1.0, MPFR version 4.1.0, MPC version 1.2.1, isl version isl-0.16.1-GMP

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 7bd26c26f5e3795062462f9efc696d4f
COMPILER_PATH=d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/arm-none-symbianelf/11.2.0/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/bin/
LIBRARY_PATH=d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/lib/
COLLECT_GCC_OPTIONS='-O2' '-fno-unit-at-a-time' '-fexceptions' '-Wall' '-Wno-unknown-pragmas'  '-mapcs-frame' '-mthumb-interwork' '-pipe' '-nostdinc' '-c' '-Wformat=0' '-fno-asynchronous-unwind-tables' '-std=c++11' '-v' '-pipe' '-Wno-multichar' '-Wno-reorder' '-Wno-unused' '-Wformat=0' '-fsigned-char' '-Wno-psabi' '-marm' '-mfloat-abi=soft' '-D' '__MARM_INTERWORK__' '-D' 'NDEBUG' '-D' '_UNICODE' '-D' '__GCCE__' '-D' '__SYMBIAN32__' '-D' '__S60_50__' '-D' '__S60_3X__' '-D' '__SERIES60_3X__' '-D' '__GCCE__' '-D' '__EPOC32__' '-D' '__MARM__' '-D' '__EABI__' '-D' '__MARM_ARMV5__' '-D' '__EXE__' '-D' 'ENABLE_CGE' '-D' 'ENABLE_ULTIMA' '-D' 'ENABLE_ULTIMA6' '-D' 'S60' '-D' 'S60V3' '-D' 'SDL_BACKEND' '-D' 'ENABLE_VKEYBD' '-D' 'USE_TRANSLATION' '-D' 'NONSTANDARD_PORT' '-D' 'DISABLE_FANCY_THEMES' '-D' 'USE_A52' '-D' 'USE_BINK' '-D' 'USE_FAAD' '-D' 'USE_FLAC' '-D' 'USE_FREETYPE2' '-D' 'USE_JPEG' '-D' 'USE_MAD' '-D' 'USE_MPEG2' '-D' 'USE_PNG'
 '-D' 'USE_THEORADEC' '-D' 'USE_TREMOR' '-D' 'USE_ZLIB' '-D' '__SUPPORT_CPP_EXCEPTIONS__' '-D' '__MARM_ARMV5__' '-D' '__PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh"' '-Wno-ctor-dtor-privacy' '-fpermissive' '-std=c++14' '-include' '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h' '-I' '/Symbian/Projects/SDL/scummvm/base' '-I' '/Symbian/Projects/SDL/scummvm/engines' '-I' '/Symbian/Projects/SDL/scummvm' '-I' '/Symbian/Projects/SDL/scummvm/gui' '-I' '/Symbian/Projects/SDL/scummvm/audio' '-I' '/Symbian/Projects/SDL/scummvm/backends/platform/symbian/src' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/freetype' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/mpeg2dec' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/jpeg' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/png'
 '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/esdl' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/zlib' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/libc' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/theora' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/tremor' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/site' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include' '-I' '/Symbian/Projects/SDL/scummvm/backends/platform/symbian/src' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant' '-I' 'd:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include' '-o' '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/version.o' '-mlibarch=armv5t' '-march=armv5t' '-dumpdir' '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/version.'
-- 
Фёдар Стрыжнёў(Fiodar Stryzhniou) <fedor_qd@mail.ru>

Re: Symbian: unalighned relocations for pointers-to-members

[Фёдар Стрыжнёў]

Any help, please.

On Thu, 16 Dec 2021 03:39:47 +0300
Фёдар Стрыжнёў (Fiodar Stryzhniou) via Gcc-help <gcc-help@gcc.gnu.org> wrote:

> Hello. I maintain ScummVM port for Symbian Series 60v3. ScummVM is a complete rewrite of hundreds old games' executables and is not an emulator. It's free and opensource.
> 
> Last year, when I prepared a version 2.2.0 in the release, it was faced with the fact that when the Ultima engine is turned on in the executable file (supports Ultima 1, 4, 6, 8), it does not start. Ultima 4 & 6 support disabling allowed SCUMMVM. In the spring of this year, after some changes in the source code Ultima, the elf2e32 utility has begun to complete the work with the error "Line 427". To clarify the causes of the error, a rebeling of the code responsible for the support of Ultima 4 & 6 was carried out.
> The rebel passed as follows:
> 1. Removed ultima.lib (Static Library)
> 2. Left the entry point, deleted all other files associated with Ultima 4/6 from the project assembly
> 3. Collected ultima.lib, then collected scummvm.exe
> 4. Added files to the project and continued to collect until the error did not jump out.
> 
> I have done these steps first for Ultima 4, then - 6. In both cases, the reason was pointer-to-member array declaration.
> Ultima 4 - https://github.com/scummvm/scummvm/blob/master/engines/ultima/ultima4/game/item.cpp#L49
> Ultima 6 - https://github.com/scummvm/scummvm/blob/master/engines/ultima/nuvie/usecode/u6_object_types.h#L28
> 
> elf2e32 creates E32 aka EPOC32 aka Symbian exe and dlls from elf.
> 
> Analysis of the elf2e32 source code indicated the reason - when checking the created file, unaligned relocations were found. After modifying the source code, the elf2e32 was printed unaligned relocations. I redirect to file "readelf -a <name of elf>". I find several random Elf32_Rel r_offset from elf2e32 in readelf output. GCC 5.4.0 and 11.2.0 give same result.
> 
> Compiler options taken from Eclipse output and they are same for every source file: arm-none-symbianelf-gcc    -O2 -fno-unit-at-a-time  -fexceptions -Wall -Wno-unknown-pragmas   -march=armv5t      -mapcs-frame -mthumb-interwork -pipe -nostdinc -c  -Wno-multichar -Wno-unused -Wno-format -fsigned-char -fno-asynchronous-unwind-tables -std=c++11 -v -pipe -Wno-multichar -Wno-reorder -Wno-unused -Wno-format -fsigned-char -Wno-psabi -marm  -msoft-float  -D__MARM_INTERWORK__   -DNDEBUG -D_UNICODE -D__GCCE__  -D__SYMBIAN32__ -D__S60_50__ -D__S60_3X__ -D__SERIES60_3X__ -D__GCCE__ -D__EPOC32__ -D__MARM__ -D__EABI__ -D__MARM_ARMV5__ -D__EXE__ -DENABLE_CGE -DENABLE_ULTIMA -DENABLE_ULTIMA6 -DS60 -DS60V3 -DSDL_BACKEND -DENABLE_VKEYBD -DUSE_TRANSLATION -DNONSTANDARD_PORT -DDISABLE_FANCY_THEMES -DUSE_A52 -DUSE_BINK -DUSE_FAAD -DUSE_FLAC -DUSE_FREETYPE2 -DUSE_JPEG -DUSE_MAD -DUSE_MPEG2 -DUSE_PNG -DUSE_THEORADEC
>  -DUSE_TREMOR -DUSE_ZLIB -D__SUPPORT_CPP_EXCEPTIONS__ -D__MARM_ARMV5__  -D__PRODUCT_INCLUDE__=\"/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh\"    -x c++ -Wno-ctor-dtor-privacy -fpermissive -std=c++14 -include /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/GCCE.h  -I /Symbian/Projects/SDL/scummvm/base -I /Symbian/Projects/SDL/scummvm/engines  -I /Symbian/Projects/SDL/scummvm  -I /Symbian/Projects/SDL/scummvm/gui  -I /Symbian/Projects/SDL/scummvm/audio  -I /Symbian/Projects/SDL/scummvm/backends/platform/symbian/src -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/freetype -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/mpeg2dec -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/jpeg
>  -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/png -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/ESDL -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/ZLIB -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/libc -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/theora -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/tremor -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/site -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include -I /Symbian/Projects/SDL/scummvm/backends/platform/symbian/src -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant -I "d:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include" -o /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/version.o /Symbian/Projects/SDL/scummvm/base/version.cpp
> Using built-in specs.
> COLLECT_GCC=arm-none-symbianelf-gcc
> Target: arm-none-symbianelf
> Configured with: ../gcc-11.2.0/./configure --target=arm-none-symbianelf --prefix=/usr/local/gcc-11.2.0 --without-headers --enable-languages=c,c++,lto --enable-poison-system-directories --enable-lto --with-newlib --enable-long-long --with-libiconv-prefix=/usr/local --with-dwarf2 --enable-interwork --enable-tls --enable-multilib --disable-hosted-libstdcxx --disable-libstdcxx-pch --disable-option-checking --disable-threads --disable-nls --disable-win32-registry --disable-libssp --disable-shared --enable-wchar_t --enable-extra-sgxxlite-multilibs --enable-c99 --with-static-standard-libraries
> Thread model: single
> Supported LTO compression algorithms: zlib
> gcc version 11.2.0 (GCC)
> COLLECT_GCC_OPTIONS='-O2' '-fno-unit-at-a-time' '-fexceptions' '-Wall' '-Wno-unknown-pragmas'  '-mapcs-frame' '-mthumb-interwork' '-pipe' '-nostdinc' '-c' '-Wformat=0' '-fno-asynchronous-unwind-tables' '-std=c++11' '-v' '-pipe' '-Wno-multichar' '-Wno-reorder' '-Wno-unused' '-Wformat=0' '-fsigned-char' '-Wno-psabi' '-marm' '-mfloat-abi=soft' '-D' '__MARM_INTERWORK__' '-D' 'NDEBUG' '-D' '_UNICODE' '-D' '__GCCE__' '-D' '__SYMBIAN32__' '-D' '__S60_50__' '-D' '__S60_3X__' '-D' '__SERIES60_3X__' '-D' '__GCCE__' '-D' '__EPOC32__' '-D' '__MARM__' '-D' '__EABI__' '-D' '__MARM_ARMV5__' '-D' '__EXE__' '-D' 'ENABLE_CGE' '-D' 'ENABLE_ULTIMA' '-D' 'ENABLE_ULTIMA6' '-D' 'S60' '-D' 'S60V3' '-D' 'SDL_BACKEND' '-D' 'ENABLE_VKEYBD' '-D' 'USE_TRANSLATION' '-D' 'NONSTANDARD_PORT' '-D' 'DISABLE_FANCY_THEMES' '-D' 'USE_A52' '-D' 'USE_BINK' '-D' 'USE_FAAD' '-D' 'USE_FLAC' '-D' 'USE_FREETYPE2' '-D' 'USE_JPEG' '-D' 'USE_MAD' '-D' 'USE_MPEG2' '-D' 'USE_PNG' '-D' 'USE_THEORADEC'
>  '-D' 'USE_TREMOR' '-D' 'USE_ZLIB' '-D' '__SUPPORT_CPP_EXCEPTIONS__' '-D' '__MARM_ARMV5__' '-D' '__PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh"' '-Wno-ctor-dtor-privacy' '-fpermissive' '-std=c++14' '-include' '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h' '-I' '/Symbian/Projects/SDL/scummvm/base' '-I' '/Symbian/Projects/SDL/scummvm/engines' '-I' '/Symbian/Projects/SDL/scummvm' '-I' '/Symbian/Projects/SDL/scummvm/gui' '-I' '/Symbian/Projects/SDL/scummvm/audio' '-I' '/Symbian/Projects/SDL/scummvm/backends/platform/symbian/src' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/freetype' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/mpeg2dec' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/jpeg' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/png' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/esdl'
>  '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/zlib' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/libc' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/theora' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/tremor' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/site' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include' '-I' '/Symbian/Projects/SDL/scummvm/backends/platform/symbian/src' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant' '-I' 'd:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include' '-o' '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/version.o' '-mlibarch=armv5t' '-march=armv5t' '-dumpdir' '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/'
>  d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/arm-none-symbianelf/11.2.0/cc1plus.exe -quiet -nostdinc -v -I /Symbian/Projects/SDL/scummvm/base -I /Symbian/Projects/SDL/scummvm/engines -I /Symbian/Projects/SDL/scummvm -I /Symbian/Projects/SDL/scummvm/gui -I /Symbian/Projects/SDL/scummvm/audio -I /Symbian/Projects/SDL/scummvm/backends/platform/symbian/src -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/freetype -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/mpeg2dec -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/jpeg -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/png -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/esdl -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/zlib -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/libc -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/theora -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/tremor -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/site
>  -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include -I /Symbian/Projects/SDL/scummvm/backends/platform/symbian/src -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant -I d:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include -iprefix d:\mingw\msys\1.0\local\gcc-11.2.0\bin\../lib/gcc/arm-none-symbianelf/11.2.0/ -D__USES_INITFINI__ -D __MARM_INTERWORK__ -D NDEBUG -D _UNICODE -D __GCCE__ -D __SYMBIAN32__ -D __S60_50__ -D __S60_3X__ -D __SERIES60_3X__ -D __GCCE__ -D __EPOC32__ -D __MARM__ -D __EABI__ -D __MARM_ARMV5__ -D __EXE__ -D ENABLE_CGE -D ENABLE_ULTIMA -D ENABLE_ULTIMA6 -D S60 -D S60V3 -D SDL_BACKEND -D ENABLE_VKEYBD -D USE_TRANSLATION -D NONSTANDARD_PORT -D DISABLE_FANCY_THEMES -D USE_A52 -D USE_BINK -D USE_FAAD -D USE_FLAC -D USE_FREETYPE2 -D USE_JPEG -D USE_MAD -D USE_MPEG2 -D USE_PNG -D USE_THEORADEC -D USE_TREMOR
>  -D USE_ZLIB -D __SUPPORT_CPP_EXCEPTIONS__ -D __MARM_ARMV5__ -D __PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh" -include /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h /Symbian/Projects/SDL/scummvm/base/version.cpp -fno-builtin -fvisibility=hidden -fno-short-enums -fshort-wchar -quiet -dumpdir /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/ -dumpbase version.cpp -dumpbase-ext .cpp -mapcs-frame -mthumb-interwork -marm -mfloat-abi=soft -mlibarch=armv5t -march=armv5t -O2 -Wall -Wno-unknown-pragmas -Wformat=0 -Wno-multichar -Wno-reorder -Wno-unused -Wformat=0 -Wno-psabi -Wno-ctor-dtor-privacy -std=c++11 -std=c++14 -version -fno-unit-at-a-time -fexceptions -fno-asynchronous-unwind-tables -fsigned-char -fpermissive -fno-builtin -fvisibility=hidden -fno-short-enums -fshort-wchar -o - |
>  d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/bin/as.exe -march=armv5t -mapcs-frame -mfpu=vfp -mthumb-interwork -mfloat-abi=soft -meabi=5 -o /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/version.o
> GNU C++14 (GCC) version 11.2.0 (arm-none-symbianelf)
> 	compiled by GNU C version 6.3.0, GMP version 6.1.0, MPFR version 4.1.0, MPC version 1.2.1, isl version isl-0.16.1-GMP
> 
> GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
> ignoring duplicate directory "/Symbian/Projects/SDL/scummvm/backends/platform/symbian/src"
> #include "..." search starts here:
> #include <...> search starts here:
>  /Symbian/Projects/SDL/scummvm/base
>  /Symbian/Projects/SDL/scummvm/engines
>  /Symbian/Projects/SDL/scummvm
>  /Symbian/Projects/SDL/scummvm/gui
>  /Symbian/Projects/SDL/scummvm/audio
>  /Symbian/Projects/SDL/scummvm/backends/platform/symbian/src
>  /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/freetype
>  /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/mpeg2dec
>  /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/jpeg
>  /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/png
>  /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/esdl
>  /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/zlib
>  /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/libc
>  /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/theora
>  /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/tremor
>  /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/site
>  /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include
>  /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant
>  d:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include
> End of search list.
> GNU C++14 (GCC) version 11.2.0 (arm-none-symbianelf)
> 	compiled by GNU C version 6.3.0, GMP version 6.1.0, MPFR version 4.1.0, MPC version 1.2.1, isl version isl-0.16.1-GMP
> 
> GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
> Compiler executable checksum: 7bd26c26f5e3795062462f9efc696d4f
> COMPILER_PATH=d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/arm-none-symbianelf/11.2.0/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/bin/
> LIBRARY_PATH=d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/lib/
> COLLECT_GCC_OPTIONS='-O2' '-fno-unit-at-a-time' '-fexceptions' '-Wall' '-Wno-unknown-pragmas'  '-mapcs-frame' '-mthumb-interwork' '-pipe' '-nostdinc' '-c' '-Wformat=0' '-fno-asynchronous-unwind-tables' '-std=c++11' '-v' '-pipe' '-Wno-multichar' '-Wno-reorder' '-Wno-unused' '-Wformat=0' '-fsigned-char' '-Wno-psabi' '-marm' '-mfloat-abi=soft' '-D' '__MARM_INTERWORK__' '-D' 'NDEBUG' '-D' '_UNICODE' '-D' '__GCCE__' '-D' '__SYMBIAN32__' '-D' '__S60_50__' '-D' '__S60_3X__' '-D' '__SERIES60_3X__' '-D' '__GCCE__' '-D' '__EPOC32__' '-D' '__MARM__' '-D' '__EABI__' '-D' '__MARM_ARMV5__' '-D' '__EXE__' '-D' 'ENABLE_CGE' '-D' 'ENABLE_ULTIMA' '-D' 'ENABLE_ULTIMA6' '-D' 'S60' '-D' 'S60V3' '-D' 'SDL_BACKEND' '-D' 'ENABLE_VKEYBD' '-D' 'USE_TRANSLATION' '-D' 'NONSTANDARD_PORT' '-D' 'DISABLE_FANCY_THEMES' '-D' 'USE_A52' '-D' 'USE_BINK' '-D' 'USE_FAAD' '-D' 'USE_FLAC' '-D' 'USE_FREETYPE2' '-D' 'USE_JPEG' '-D' 'USE_MAD' '-D' 'USE_MPEG2' '-D' 'USE_PNG'
>  '-D' 'USE_THEORADEC' '-D' 'USE_TREMOR' '-D' 'USE_ZLIB' '-D' '__SUPPORT_CPP_EXCEPTIONS__' '-D' '__MARM_ARMV5__' '-D' '__PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh"' '-Wno-ctor-dtor-privacy' '-fpermissive' '-std=c++14' '-include' '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h' '-I' '/Symbian/Projects/SDL/scummvm/base' '-I' '/Symbian/Projects/SDL/scummvm/engines' '-I' '/Symbian/Projects/SDL/scummvm' '-I' '/Symbian/Projects/SDL/scummvm/gui' '-I' '/Symbian/Projects/SDL/scummvm/audio' '-I' '/Symbian/Projects/SDL/scummvm/backends/platform/symbian/src' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/freetype' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/mpeg2dec' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/jpeg' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/png'
>  '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/esdl' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/zlib' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/libc' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/theora' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/tremor' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/site' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include' '-I' '/Symbian/Projects/SDL/scummvm/backends/platform/symbian/src' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant' '-I' 'd:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include' '-o' '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/version.o' '-mlibarch=armv5t' '-march=armv5t' '-dumpdir' '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/version.'
> -- 
> Фёдар Стрыжнёў(Fiodar Stryzhniou) <fedor_qd@mail.ru>


-- 
Фёдар Стрыжнёў(Fiodar Stryzhniou) <fedor_qd@mail.ru>

Re: Symbian: unalighned relocations for pointers-to-members

[Richard Earnshaw]

On 16/12/2021 00:39, Фёдар Стрыжнёў (Fiodar Stryzhniou) via Gcc-help wrote:
> Hello. I maintain ScummVM port for Symbian Series 60v3. ScummVM is a complete rewrite of hundreds old games' executables and is not an emulator. It's free and opensource.
> 
> Last year, when I prepared a version 2.2.0 in the release, it was faced with the fact that when the Ultima engine is turned on in the executable file (supports Ultima 1, 4, 6, 8), it does not start. Ultima 4 & 6 support disabling allowed SCUMMVM. In the spring of this year, after some changes in the source code Ultima, the elf2e32 utility has begun to complete the work with the error "Line 427". To clarify the causes of the error, a rebeling of the code responsible for the support of Ultima 4 & 6 was carried out.
> The rebel passed as follows:
> 1. Removed ultima.lib (Static Library)
> 2. Left the entry point, deleted all other files associated with Ultima 4/6 from the project assembly
> 3. Collected ultima.lib, then collected scummvm.exe
> 4. Added files to the project and continued to collect until the error did not jump out.
> 
> I have done these steps first for Ultima 4, then - 6. In both cases, the reason was pointer-to-member array declaration.
> Ultima 4 - https://github.com/scummvm/scummvm/blob/master/engines/ultima/ultima4/game/item.cpp#L49
> Ultima 6 - https://github.com/scummvm/scummvm/blob/master/engines/ultima/nuvie/usecode/u6_object_types.h#L28
> 
> elf2e32 creates E32 aka EPOC32 aka Symbian exe and dlls from elf.
> 
> Analysis of the elf2e32 source code indicated the reason - when checking the created file, unaligned relocations were found. After modifying the source code, the elf2e32 was printed unaligned relocations. I redirect to file "readelf -a <name of elf>". I find several random Elf32_Rel r_offset from elf2e32 in readelf output. GCC 5.4.0 and 11.2.0 give same result.
> 
> Compiler options taken from Eclipse output and they are same for every source file: arm-none-symbianelf-gcc    -O2 -fno-unit-at-a-time  -fexceptions -Wall -Wno-unknown-pragmas   -march=armv5t      -mapcs-frame -mthumb-interwork -pipe -nostdinc -c  -Wno-multichar -Wno-unused -Wno-format -fsigned-char -fno-asynchronous-unwind-tables -std=c++11 -v -pipe -Wno-multichar -Wno-reorder -Wno-unused -Wno-format -fsigned-char -Wno-psabi -marm  -msoft-float  -D__MARM_INTERWORK__   -DNDEBUG -D_UNICODE -D__GCCE__  -D__SYMBIAN32__ -D__S60_50__ -D__S60_3X__ -D__SERIES60_3X__ -D__GCCE__ -D__EPOC32__ -D__MARM__ -D__EABI__ -D__MARM_ARMV5__ -D__EXE__ -DENABLE_CGE -DENABLE_ULTIMA -DENABLE_ULTIMA6 -DS60 -DS60V3 -DSDL_BACKEND -DENABLE_VKEYBD -DUSE_TRANSLATION -DNONSTANDARD_PORT -DDISABLE_FANCY_THEMES -DUSE_A52 -DUSE_BINK -DUSE_FAAD -DUSE_FLAC -DUSE_FREETYPE2 -DUSE_JPEG -DUSE_MAD -DUSE_MPEG2 -DUSE_PNG -DUSE_THEORADEC
>   -DUSE_TREMOR -DUSE_ZLIB -D__SUPPORT_CPP_EXCEPTIONS__ -D__MARM_ARMV5__  -D__PRODUCT_INCLUDE__=\"/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh\"    -x c++ -Wno-ctor-dtor-privacy -fpermissive -std=c++14 -include /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/GCCE.h  -I /Symbian/Projects/SDL/scummvm/base -I /Symbian/Projects/SDL/scummvm/engines  -I /Symbian/Projects/SDL/scummvm  -I /Symbian/Projects/SDL/scummvm/gui  -I /Symbian/Projects/SDL/scummvm/audio  -I /Symbian/Projects/SDL/scummvm/backends/platform/symbian/src -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/freetype -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/mpeg2dec -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/jpeg
>   -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/png -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/ESDL -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/ZLIB -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/libc -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/theora -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/tremor -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/site -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include -I /Symbian/Projects/SDL/scummvm/backends/platform/symbian/src -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant -I "d:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include" -o /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/version.o /Symbian/Projects/SDL/scummvm/base/version.cpp
> Using built-in specs.
> COLLECT_GCC=arm-none-symbianelf-gcc
> Target: arm-none-symbianelf
> Configured with: ../gcc-11.2.0/./configure --target=arm-none-symbianelf --prefix=/usr/local/gcc-11.2.0 --without-headers --enable-languages=c,c++,lto --enable-poison-system-directories --enable-lto --with-newlib --enable-long-long --with-libiconv-prefix=/usr/local --with-dwarf2 --enable-interwork --enable-tls --enable-multilib --disable-hosted-libstdcxx --disable-libstdcxx-pch --disable-option-checking --disable-threads --disable-nls --disable-win32-registry --disable-libssp --disable-shared --enable-wchar_t --enable-extra-sgxxlite-multilibs --enable-c99 --with-static-standard-libraries
> Thread model: single
> Supported LTO compression algorithms: zlib
> gcc version 11.2.0 (GCC)
> COLLECT_GCC_OPTIONS='-O2' '-fno-unit-at-a-time' '-fexceptions' '-Wall' '-Wno-unknown-pragmas'  '-mapcs-frame' '-mthumb-interwork' '-pipe' '-nostdinc' '-c' '-Wformat=0' '-fno-asynchronous-unwind-tables' '-std=c++11' '-v' '-pipe' '-Wno-multichar' '-Wno-reorder' '-Wno-unused' '-Wformat=0' '-fsigned-char' '-Wno-psabi' '-marm' '-mfloat-abi=soft' '-D' '__MARM_INTERWORK__' '-D' 'NDEBUG' '-D' '_UNICODE' '-D' '__GCCE__' '-D' '__SYMBIAN32__' '-D' '__S60_50__' '-D' '__S60_3X__' '-D' '__SERIES60_3X__' '-D' '__GCCE__' '-D' '__EPOC32__' '-D' '__MARM__' '-D' '__EABI__' '-D' '__MARM_ARMV5__' '-D' '__EXE__' '-D' 'ENABLE_CGE' '-D' 'ENABLE_ULTIMA' '-D' 'ENABLE_ULTIMA6' '-D' 'S60' '-D' 'S60V3' '-D' 'SDL_BACKEND' '-D' 'ENABLE_VKEYBD' '-D' 'USE_TRANSLATION' '-D' 'NONSTANDARD_PORT' '-D' 'DISABLE_FANCY_THEMES' '-D' 'USE_A52' '-D' 'USE_BINK' '-D' 'USE_FAAD' '-D' 'USE_FLAC' '-D' 'USE_FREETYPE2' '-D' 'USE_JPEG' '-D' 'USE_MAD' '-D' 'USE_MPEG2' '-D' 'USE_PNG' '-D' 'USE_THEORADEC'
>   '-D' 'USE_TREMOR' '-D' 'USE_ZLIB' '-D' '__SUPPORT_CPP_EXCEPTIONS__' '-D' '__MARM_ARMV5__' '-D' '__PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh"' '-Wno-ctor-dtor-privacy' '-fpermissive' '-std=c++14' '-include' '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h' '-I' '/Symbian/Projects/SDL/scummvm/base' '-I' '/Symbian/Projects/SDL/scummvm/engines' '-I' '/Symbian/Projects/SDL/scummvm' '-I' '/Symbian/Projects/SDL/scummvm/gui' '-I' '/Symbian/Projects/SDL/scummvm/audio' '-I' '/Symbian/Projects/SDL/scummvm/backends/platform/symbian/src' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/freetype' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/mpeg2dec' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/jpeg' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/png' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/esdl'
>   '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/zlib' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/libc' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/theora' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/tremor' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/site' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include' '-I' '/Symbian/Projects/SDL/scummvm/backends/platform/symbian/src' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant' '-I' 'd:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include' '-o' '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/version.o' '-mlibarch=armv5t' '-march=armv5t' '-dumpdir' '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/'
>   d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/arm-none-symbianelf/11.2.0/cc1plus.exe -quiet -nostdinc -v -I /Symbian/Projects/SDL/scummvm/base -I /Symbian/Projects/SDL/scummvm/engines -I /Symbian/Projects/SDL/scummvm -I /Symbian/Projects/SDL/scummvm/gui -I /Symbian/Projects/SDL/scummvm/audio -I /Symbian/Projects/SDL/scummvm/backends/platform/symbian/src -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/freetype -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/mpeg2dec -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/jpeg -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/png -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/esdl -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/zlib -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/libc -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/theora -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/tremor -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/site
>   -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include -I /Symbian/Projects/SDL/scummvm/backends/platform/symbian/src -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant -I d:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include -iprefix d:\mingw\msys\1.0\local\gcc-11.2.0\bin\../lib/gcc/arm-none-symbianelf/11.2.0/ -D__USES_INITFINI__ -D __MARM_INTERWORK__ -D NDEBUG -D _UNICODE -D __GCCE__ -D __SYMBIAN32__ -D __S60_50__ -D __S60_3X__ -D __SERIES60_3X__ -D __GCCE__ -D __EPOC32__ -D __MARM__ -D __EABI__ -D __MARM_ARMV5__ -D __EXE__ -D ENABLE_CGE -D ENABLE_ULTIMA -D ENABLE_ULTIMA6 -D S60 -D S60V3 -D SDL_BACKEND -D ENABLE_VKEYBD -D USE_TRANSLATION -D NONSTANDARD_PORT -D DISABLE_FANCY_THEMES -D USE_A52 -D USE_BINK -D USE_FAAD -D USE_FLAC -D USE_FREETYPE2 -D USE_JPEG -D USE_MAD -D USE_MPEG2 -D USE_PNG -D USE_THEORADEC -D USE_TREMOR
>   -D USE_ZLIB -D __SUPPORT_CPP_EXCEPTIONS__ -D __MARM_ARMV5__ -D __PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh" -include /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h /Symbian/Projects/SDL/scummvm/base/version.cpp -fno-builtin -fvisibility=hidden -fno-short-enums -fshort-wchar -quiet -dumpdir /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/ -dumpbase version.cpp -dumpbase-ext .cpp -mapcs-frame -mthumb-interwork -marm -mfloat-abi=soft -mlibarch=armv5t -march=armv5t -O2 -Wall -Wno-unknown-pragmas -Wformat=0 -Wno-multichar -Wno-reorder -Wno-unused -Wformat=0 -Wno-psabi -Wno-ctor-dtor-privacy -std=c++11 -std=c++14 -version -fno-unit-at-a-time -fexceptions -fno-asynchronous-unwind-tables -fsigned-char -fpermissive -fno-builtin -fvisibility=hidden -fno-short-enums -fshort-wchar -o - |
>   d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/bin/as.exe -march=armv5t -mapcs-frame -mfpu=vfp -mthumb-interwork -mfloat-abi=soft -meabi=5 -o /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/version.o
> GNU C++14 (GCC) version 11.2.0 (arm-none-symbianelf)
> 	compiled by GNU C version 6.3.0, GMP version 6.1.0, MPFR version 4.1.0, MPC version 1.2.1, isl version isl-0.16.1-GMP
> 
> GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
> ignoring duplicate directory "/Symbian/Projects/SDL/scummvm/backends/platform/symbian/src"
> #include "..." search starts here:
> #include <...> search starts here:
>   /Symbian/Projects/SDL/scummvm/base
>   /Symbian/Projects/SDL/scummvm/engines
>   /Symbian/Projects/SDL/scummvm
>   /Symbian/Projects/SDL/scummvm/gui
>   /Symbian/Projects/SDL/scummvm/audio
>   /Symbian/Projects/SDL/scummvm/backends/platform/symbian/src
>   /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/freetype
>   /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/mpeg2dec
>   /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/jpeg
>   /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/png
>   /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/esdl
>   /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/zlib
>   /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/libc
>   /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/theora
>   /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/tremor
>   /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/site
>   /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include
>   /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant
>   d:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include
> End of search list.
> GNU C++14 (GCC) version 11.2.0 (arm-none-symbianelf)
> 	compiled by GNU C version 6.3.0, GMP version 6.1.0, MPFR version 4.1.0, MPC version 1.2.1, isl version isl-0.16.1-GMP
> 
> GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
> Compiler executable checksum: 7bd26c26f5e3795062462f9efc696d4f
> COMPILER_PATH=d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/arm-none-symbianelf/11.2.0/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/bin/
> LIBRARY_PATH=d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/lib/
> COLLECT_GCC_OPTIONS='-O2' '-fno-unit-at-a-time' '-fexceptions' '-Wall' '-Wno-unknown-pragmas'  '-mapcs-frame' '-mthumb-interwork' '-pipe' '-nostdinc' '-c' '-Wformat=0' '-fno-asynchronous-unwind-tables' '-std=c++11' '-v' '-pipe' '-Wno-multichar' '-Wno-reorder' '-Wno-unused' '-Wformat=0' '-fsigned-char' '-Wno-psabi' '-marm' '-mfloat-abi=soft' '-D' '__MARM_INTERWORK__' '-D' 'NDEBUG' '-D' '_UNICODE' '-D' '__GCCE__' '-D' '__SYMBIAN32__' '-D' '__S60_50__' '-D' '__S60_3X__' '-D' '__SERIES60_3X__' '-D' '__GCCE__' '-D' '__EPOC32__' '-D' '__MARM__' '-D' '__EABI__' '-D' '__MARM_ARMV5__' '-D' '__EXE__' '-D' 'ENABLE_CGE' '-D' 'ENABLE_ULTIMA' '-D' 'ENABLE_ULTIMA6' '-D' 'S60' '-D' 'S60V3' '-D' 'SDL_BACKEND' '-D' 'ENABLE_VKEYBD' '-D' 'USE_TRANSLATION' '-D' 'NONSTANDARD_PORT' '-D' 'DISABLE_FANCY_THEMES' '-D' 'USE_A52' '-D' 'USE_BINK' '-D' 'USE_FAAD' '-D' 'USE_FLAC' '-D' 'USE_FREETYPE2' '-D' 'USE_JPEG' '-D' 'USE_MAD' '-D' 'USE_MPEG2' '-D' 'USE_PNG'
>   '-D' 'USE_THEORADEC' '-D' 'USE_TREMOR' '-D' 'USE_ZLIB' '-D' '__SUPPORT_CPP_EXCEPTIONS__' '-D' '__MARM_ARMV5__' '-D' '__PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh"' '-Wno-ctor-dtor-privacy' '-fpermissive' '-std=c++14' '-include' '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h' '-I' '/Symbian/Projects/SDL/scummvm/base' '-I' '/Symbian/Projects/SDL/scummvm/engines' '-I' '/Symbian/Projects/SDL/scummvm' '-I' '/Symbian/Projects/SDL/scummvm/gui' '-I' '/Symbian/Projects/SDL/scummvm/audio' '-I' '/Symbian/Projects/SDL/scummvm/backends/platform/symbian/src' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/freetype' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/mpeg2dec' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/jpeg' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/png'
>   '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/esdl' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/zlib' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/libc' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/theora' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/tremor' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/site' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include' '-I' '/Symbian/Projects/SDL/scummvm/backends/platform/symbian/src' '-I' '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant' '-I' 'd:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include' '-o' '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/version.o' '-mlibarch=armv5t' '-march=armv5t' '-dumpdir' '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/SDL/scummvm/backends/platform/symbian/S60v3/NEVERHOODE/GCCE/UREL/version.'
> 

I can't tell from this what the issue might be.  To stand any chance of 
proceeding further, I think we're going to need a simple, 
self-contained, testcase that can demonstrate the problem.

I don't think I've seen a question about SymbianOS support in over 5 
years, now, possibly longer.  Given that SymbianOS itself was 
discontinued back around 2013 (8 years ago now), the GCC port has 
declined to the point where I suspect it's likely to get deprecated 
soon, due to lack of maintenance.

R.

Re: Symbian: unalighned relocations for pointers-to-members

[Фёдар Стрыжнёў]

On Mon, 20 Dec 2021 15:37:26 +0000
Richard Earnshaw <Richard.Earnshaw@foss.arm.com> wrote:
> 
> I can't tell from this what the issue might be.  To stand any chance of 
> proceeding further, I think we're going to need a simple, 
> self-contained, testcase that can demonstrate the problem.

I need some time to reduce code size. This is big project.

> 
> I don't think I've seen a question about SymbianOS support in over 5 
> years, now, possibly longer.  Given that SymbianOS itself was 
> discontinued back around 2013 (8 years ago now), the GCC port has 
> declined to the point where I suspect it's likely to get deprecated 
> soon, due to lack of maintenance.
> 
> R.

There several configure problems but result is good. It just works. This is offtopic but can be continued in separate thread.
-- 
Фёдар Стрыжнёў(Fiodar Stryzhniou) <fedor_qd@mail.ru>

Re: Symbian: unalighned relocations for pointers-to-members

[Segher Boessenkool]

On Mon, Dec 20, 2021 at 10:30:01PM +0300, Фёдар Стрыжнёў (Fiodar Stryzhniou) via Gcc-help wrote:
> On Mon, 20 Dec 2021 15:37:26 +0000
> Richard Earnshaw <Richard.Earnshaw@foss.arm.com> wrote:
> > I don't think I've seen a question about SymbianOS support in over 5 
> > years, now, possibly longer.  Given that SymbianOS itself was 
> > discontinued back around 2013 (8 years ago now), the GCC port has 
> > declined to the point where I suspect it's likely to get deprecated 
> > soon, due to lack of maintenance.
> 
> There several configure problems but result is good. It just works. This is offtopic but can be continued in separate thread.

Such things are never off-topic :-)

Someone needs to do maintenance on the port.  An important first step is
to regularly (and at least semi-frequently) post testresults.  That also
shows everyone there is still some interest in the port, and importantly
it shows what the current state is.


Segher

Re: Symbian: unalighned relocations for pointers-to-members

[Фёдар Стрыжнёў]

On Mon, 20 Dec 2021 18:00:16 -0600
Segher Boessenkool <segher@kernel.crashing.org> wrote:

> On Mon, Dec 20, 2021 at 10:30:01PM +0300, Фёдар Стрыжнёў (Fiodar Stryzhniou) via Gcc-help wrote:
> > On Mon, 20 Dec 2021 15:37:26 +0000
> > Richard Earnshaw <Richard.Earnshaw@foss.arm.com> wrote:
> > > I don't think I've seen a question about SymbianOS support in over 5 
> > > years, now, possibly longer.  Given that SymbianOS itself was 
> > > discontinued back around 2013 (8 years ago now), the GCC port has 
> > > declined to the point where I suspect it's likely to get deprecated 
> > > soon, due to lack of maintenance.
> > 
> > There several configure problems but result is good. It just works. This is offtopic but can be continued in separate thread.
> 
> Such things are never off-topic :-)
> 
> Someone needs to do maintenance on the port.  An important first step is
> to regularly (and at least semi-frequently) post testresults.  That also
> shows everyone there is still some interest in the port, and importantly
> it shows what the current state is.
> 
> 
I wrote in email all build issues later. I need to build GCC 11 again to gather info.
Libsupc++ tied to libstdc++ is major problem because it depends from libc. Therefore libsupc++ may(and probaly will) depend from libc. Symbian itself doesn't need libc. It's ordinal library in Symbian.
> Segher


-- 
Фёдар Стрыжнёў(Fiodar Stryzhniou) <fedor_qd@mail.ru>

Re: Symbian: unalighned relocations for pointers-to-members

[Jonathan Wakely]

On Tue, 21 Dec 2021, 14:02 Фёдар Стрыжнёў (Fiodar Stryzhniou) via Gcc-help,
<gcc-help@gcc.gnu.org> wrote:

> On Mon, 20 Dec 2021 18:00:16 -0600
> Segher Boessenkool <segher@kernel.crashing.org> wrote:
>
> > On Mon, Dec 20, 2021 at 10:30:01PM +0300, Фёдар Стрыжнёў (Fiodar
> Stryzhniou) via Gcc-help wrote:
> > > On Mon, 20 Dec 2021 15:37:26 +0000
> > > Richard Earnshaw <Richard.Earnshaw@foss.arm.com> wrote:
> > > > I don't think I've seen a question about SymbianOS support in over 5
> > > > years, now, possibly longer.  Given that SymbianOS itself was
> > > > discontinued back around 2013 (8 years ago now), the GCC port has
> > > > declined to the point where I suspect it's likely to get deprecated
> > > > soon, due to lack of maintenance.
> > >
> > > There several configure problems but result is good. It just works.
> This is offtopic but can be continued in separate thread.
> >
> > Such things are never off-topic :-)
> >
> > Someone needs to do maintenance on the port.  An important first step is
> > to regularly (and at least semi-frequently) post testresults.  That also
> > shows everyone there is still some interest in the port, and importantly
> > it shows what the current state is.
> >
> >
> I wrote in email all build issues later. I need to build GCC 11 again to
> gather info.
> Libsupc++ tied to libstdc++


What do you mean "tied to"?


is major problem because it depends from libc. Therefore libsupc++ may(and
> probaly will) depend from libc.



Libsupc++ has minimal dependencies on libc, and what it has is
optional/configurable.

Are you building with --disable-hosted-libstdcxx to get a freestanding
libsupc++ build?

Re: Symbian: unalighned relocations for pointers-to-members

[Фёдар Стрыжнёў]

On Tue, 21 Dec 2021 14:13:45 +0000
Jonathan Wakely <jwakely.gcc@gmail.com> wrote:

> On Tue, 21 Dec 2021, 14:02 Фёдар Стрыжнёў (Fiodar Stryzhniou) via Gcc-help,
> <gcc-help@gcc.gnu.org> wrote:
> 
> > On Mon, 20 Dec 2021 18:00:16 -0600
> > Segher Boessenkool <segher@kernel.crashing.org> wrote:
> >
> > > On Mon, Dec 20, 2021 at 10:30:01PM +0300, Фёдар Стрыжнёў (Fiodar
> > Stryzhniou) via Gcc-help wrote:
> > > > On Mon, 20 Dec 2021 15:37:26 +0000
> > > > Richard Earnshaw <Richard.Earnshaw@foss.arm.com> wrote:
> > > > > I don't think I've seen a question about SymbianOS support in over 5
> > > > > years, now, possibly longer.  Given that SymbianOS itself was
> > > > > discontinued back around 2013 (8 years ago now), the GCC port has
> > > > > declined to the point where I suspect it's likely to get deprecated
> > > > > soon, due to lack of maintenance.
> > > >
> > > > There several configure problems but result is good. It just works.
> > This is offtopic but can be continued in separate thread.
> > >
> > > Such things are never off-topic :-)
> > >
> > > Someone needs to do maintenance on the port.  An important first step is
> > > to regularly (and at least semi-frequently) post testresults.  That also
> > > shows everyone there is still some interest in the port, and importantly
> > > it shows what the current state is.
> > >
> > >
> > I wrote in email all build issues later. I need to build GCC 11 again to
> > gather info.
> > Libsupc++ tied to libstdc++
> 
> 
> What do you mean "tied to"?

I can't build libsupc++ without call "make something_command_for_libsupc" because got error because libstdc++ builds together with libsupc. I can't remember command's name. I build many releases from GCC 5.4.0 till 11.2.0. Errors always same.
> 
> 
> is major problem because it depends from libc. Therefore libsupc++ may(and
> > probaly will) depend from libc.
> 
> 
> 
> Libsupc++ has minimal dependencies on libc, and what it has is
> optional/configurable.
> 
> Are you building with --disable-hosted-libstdcxx to get a freestanding
> libsupc++ build?


-- 
Фёдар Стрыжнёў(Fiodar Stryzhniou) <fedor_qd@mail.ru>

Re: Symbian: unalighned relocations for pointers-to-members

[Jonathan Wakely]

On Tue, 21 Dec 2021, 15:17 Фёдар Стрыжнёў, <fedor_qd@mail.ru> wrote:

> On Tue, 21 Dec 2021 14:13:45 +0000
> Jonathan Wakely <jwakely.gcc@gmail.com> wrote:
>
> > On Tue, 21 Dec 2021, 14:02 Фёдар Стрыжнёў (Fiodar Stryzhniou) via
> Gcc-help,
> > <gcc-help@gcc.gnu.org> wrote:
> >
> > > On Mon, 20 Dec 2021 18:00:16 -0600
> > > Segher Boessenkool <segher@kernel.crashing.org> wrote:
> > >
> > > > On Mon, Dec 20, 2021 at 10:30:01PM +0300, Фёдар Стрыжнёў (Fiodar
> > > Stryzhniou) via Gcc-help wrote:
> > > > > On Mon, 20 Dec 2021 15:37:26 +0000
> > > > > Richard Earnshaw <Richard.Earnshaw@foss.arm.com> wrote:
> > > > > > I don't think I've seen a question about SymbianOS support in
> over 5
> > > > > > years, now, possibly longer.  Given that SymbianOS itself was
> > > > > > discontinued back around 2013 (8 years ago now), the GCC port has
> > > > > > declined to the point where I suspect it's likely to get
> deprecated
> > > > > > soon, due to lack of maintenance.
> > > > >
> > > > > There several configure problems but result is good. It just works.
> > > This is offtopic but can be continued in separate thread.
> > > >
> > > > Such things are never off-topic :-)
> > > >
> > > > Someone needs to do maintenance on the port.  An important first
> step is
> > > > to regularly (and at least semi-frequently) post testresults.  That
> also
> > > > shows everyone there is still some interest in the port, and
> importantly
> > > > it shows what the current state is.
> > > >
> > > >
> > > I wrote in email all build issues later. I need to build GCC 11 again
> to
> > > gather info.
> > > Libsupc++ tied to libstdc++
> >
> >
> > What do you mean "tied to"?
>
> I can't build libsupc++ without call "make something_command_for_libsupc"
> because got error because libstdc++ builds together with libsupc. I can't
> remember command's name. I build many releases from GCC 5.4.0 till 11.2.0.
> Errors always same.
>

Maybe if you report a bug we can help. If you can't even tell us what the
error is, nobody can help.

Re: Symbian: unalighned relocations for pointers-to-members

[Фёдар Стрыжнёў]

[-- Attachment #1: Type: text/plain, Size: 10141 bytes --]

On Mon, 20 Dec 2021 15:37:26 +0000
Richard Earnshaw <Richard.Earnshaw@foss.arm.com> wrote:

> On 16/12/2021 00:39, Фёдар Стрыжнёў (Fiodar Stryzhniou) via Gcc-help wrote:
> > Hello. I maintain ScummVM port for Symbian Series 60v3. ScummVM is a complete rewrite of hundreds old games' executables and is not an emulator. It's free and opensource.
> > 
> > Last year, when I prepared a version 2.2.0 in the release, it was faced with the fact that when the Ultima engine is turned on in the executable file (supports Ultima 1, 4, 6, 8), it does not start. Ultima 4 & 6 support disabling allowed SCUMMVM. In the spring of this year, after some changes in the source code Ultima, the elf2e32 utility has begun to complete the work with the error "Line 427". To clarify the causes of the error, a rebeling of the code responsible for the support of Ultima 4 & 6 was carried out.
> > The rebel passed as follows:
> > 1. Removed ultima.lib (Static Library)
> > 2. Left the entry point, deleted all other files associated with Ultima 4/6 from the project assembly
> > 3. Collected ultima.lib, then collected scummvm.exe
> > 4. Added files to the project and continued to collect until the error did not jump out.
> > 
> > I have done these steps first for Ultima 4, then - 6. In both cases, the reason was pointer-to-member array declaration.
> > Ultima 4 - https://github.com/scummvm/scummvm/blob/master/engines/ultima/ultima4/game/item.cpp#L49
> > Ultima 6 - https://github.com/scummvm/scummvm/blob/master/engines/ultima/nuvie/usecode/u6_object_types.h#L28
> > 
> > elf2e32 creates E32 aka EPOC32 aka Symbian exe and dlls from elf.
> > 
> > Analysis of the elf2e32 source code indicated the reason - when checking the created file, unaligned relocations were found. After modifying the source code, the elf2e32 was printed unaligned relocations. I redirect to file "readelf -a <name of elf>". I find several random Elf32_Rel r_offset from elf2e32 in readelf output. GCC 5.4.0 and 11.2.0 give same result.
> > 
> > 
> 
> I can't tell from this what the issue might be.  To stand any chance of 
> proceeding further, I think we're going to need a simple, 
> self-contained, testcase that can demonstrate the problem.
> 
> I don't think I've seen a question about SymbianOS support in over 5 
> years, now, possibly longer.  Given that SymbianOS itself was 
> discontinued back around 2013 (8 years ago now), the GCC port has 
> declined to the point where I suspect it's likely to get deprecated 
> soon, due to lack of maintenance.
> 
> R.

I made very small testcase in main.cpp. Attachment contains Carbide С++
project files too if needed.

Console output taken from Carbide C++:
Using built-in specs.
COLLECT_GCC=arm-none-symbianelf-gcc
Target: arm-none-symbianelf
Configured with: ../gcc-11.2.0/./configure --target=arm-none-symbianelf
--prefix=/usr/local/gcc-11.2.0 --without-headers --enable-languages=c,c+
+,lto --enable-poison-system-directories --enable-lto --with-newlib
--enable-long-long --with-libiconv-prefix=/usr/local --with-dwarf2
--enable-interwork --enable-tls --enable-multilib
--disable-hosted-libstdcxx --disable-libstdcxx-pch
--disable-option-checking --disable-threads --disable-nls
--disable-win32-registry --disable-libssp --disable-shared
--enable-wchar_t --enable-extra-sgxxlite-multilibs --enable-c99
--with-static-standard-libraries Thread model: single Supported LTO
compression algorithms: zlib gcc version 11.2.0 (GCC)
COLLECT_GCC_OPTIONS='-g3' '-gdwarf-2' '-fexceptions' '-Wall'
'-Wno-unknown-pragmas'  '-mapcs-frame' '-mthumb-interwork' '-pipe'
'-nostdinc' '-c' '-Wno-multichar' '-Wno-unused' '-Wformat=0' '-v'
'-marm' '-mfloat-abi=soft' '-D' '__MARM_INTERWORK__' '-MD' '-D'
'_DEBUG' '-D' '_UNICODE' '-D' '__GCCE__' '-D' '__SYMBIAN32__' '-D'
'__S60_50__' '-D' '__S60_3X__' '-D' '__SERIES60_3X__' '-D' '__GCCE__'
'-D' '__EPOC32__' '-D' '__MARM__' '-D' '__EABI__' '-D' '__MARM_ARMV5__'
'-D' '__EXE__' '-D' '__SUPPORT_CPP_EXCEPTIONS__' '-D' '__MARM_ARMV5__'
'-D'
'__PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh"'
'-Wno-ctor-dtor-privacy' '-fpermissive' '-std=c++14' '-include'
'/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h' '-I'
'/Symbian/Projects/unalighned_reloc_report/src' '-I'
'/Symbian/Projects/unalighned_reloc_report/inc' '-I'
'/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include' '-I'
'/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant' '-I'
'd:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include'
'-o'
'/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.o'
'-mlibarch=armv5t' '-march=armv5t' '-dumpdir'
'/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/'
d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/arm-none-symbianelf/11.2.0/cc1plus.exe
-quiet -nostdinc -v -I /Symbian/Projects/unalighned_reloc_report/src
-I /Symbian/Projects/unalighned_reloc_report/inc
-I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include
-I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant -I
d:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include
-iprefix d:\mingw\msys\1.0\local\gcc-11.2.0\bin
\../lib/gcc/arm-none-symbianelf/11.2.0/
-MD /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.d
-MQ /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.o
-dD -D__USES_INITFINI__ -D __MARM_INTERWORK__ -D _DEBUG -D _UNICODE -D
__GCCE__ -D __SYMBIAN32__ -D __S60_50__ -D __S60_3X__ -D
__SERIES60_3X__ -D __GCCE__ -D __EPOC32__ -D __MARM__ -D __EABI__ -D
__MARM_ARMV5__ -D __EXE__ -D __SUPPORT_CPP_EXCEPTIONS__ -D
__MARM_ARMV5__ -D
__PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh"
-include /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h /Symbian/Projects/unalighned_reloc_report/src/main.cpp
-fno-builtin -fvisibility=hidden -fno-short-enums -fshort-wchar -quiet
-dumpdir /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/
-dumpbase main.cpp -dumpbase-ext .cpp -mapcs-frame -mthumb-interwork
-marm -mfloat-abi=soft -mlibarch=armv5t -march=armv5t -g3 -gdwarf-2
-Wall -Wno-unknown-pragmas -Wno-multichar -Wno-unused -Wformat=0
-Wno-ctor-dtor-privacy -std=c++14 -version -fexceptions -fpermissive
-fno-builtin -fvisibility=hidden -fno-short-enums -fshort-wchar -o - |
d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/bin/as.exe
-march=armv5t -mapcs-frame -mfpu=vfp -mthumb-interwork -mfloat-abi=soft
-meabi=5
-o /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.o
GNU C++14 (GCC) version 11.2.0 (arm-none-symbianelf) compiled by GNU C
version 6.3.0, GMP version 6.1.0, MPFR version 4.1.0, MPC version
1.2.1, isl version isl-0.16.1-GMP

GGC heuristics: --param ggc-min-expand=100 --param
ggc-min-heapsize=131072
#include "..." search starts here:
#include <...> search starts here:
 /Symbian/Projects/unalighned_reloc_report/src
 /Symbian/Projects/unalighned_reloc_report/inc
 /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include
 /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant
 d:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include
End of search list.
GNU C++14 (GCC) version 11.2.0 (arm-none-symbianelf)
	compiled by GNU C version 6.3.0, GMP version 6.1.0, MPFR
version 4.1.0, MPC version 1.2.1, isl version isl-0.16.1-GMP

GGC heuristics: --param ggc-min-expand=100 --param
ggc-min-heapsize=131072 Compiler executable checksum:
7bd26c26f5e3795062462f9efc696d4f
COMPILER_PATH=d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/arm-none-symbianelf/11.2.0/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/bin/
LIBRARY_PATH=d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/lib/
COLLECT_GCC_OPTIONS='-g3' '-gdwarf-2' '-fexceptions' '-Wall'
'-Wno-unknown-pragmas'  '-mapcs-frame' '-mthumb-interwork' '-pipe'
'-nostdinc' '-c' '-Wno-multichar' '-Wno-unused' '-Wformat=0' '-v'
'-marm' '-mfloat-abi=soft' '-D' '__MARM_INTERWORK__' '-MD' '-D'
'_DEBUG' '-D' '_UNICODE' '-D' '__GCCE__' '-D' '__SYMBIAN32__' '-D'
'__S60_50__' '-D' '__S60_3X__' '-D' '__SERIES60_3X__' '-D' '__GCCE__'
'-D' '__EPOC32__' '-D' '__MARM__' '-D' '__EABI__' '-D' '__MARM_ARMV5__'
'-D' '__EXE__' '-D' '__SUPPORT_CPP_EXCEPTIONS__' '-D' '__MARM_ARMV5__'
'-D'
'__PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh"'
'-Wno-ctor-dtor-privacy' '-fpermissive' '-std=c++14' '-include'
'/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h' '-I'
'/Symbian/Projects/unalighned_reloc_report/src' '-I'
'/Symbian/Projects/unalighned_reloc_report/inc' '-I'
'/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include' '-I'
'/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant' '-I'
'd:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include'
'-o'
'/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.o'
'-mlibarch=armv5t' '-march=armv5t' '-dumpdir'
'/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.'
‘files copied:         1. line 437 elf2e32 : Error: E1066: Image failed
validation make[1]: *** [\Symbian\S60_5th_Edition_SDK_v1.0\epoc32
\release\gcce\udeb\unalighned_reloc_report.exe] Error 1 make: ***
[TARGETUNALIGHNED_RELOC_REPORT] Error 2

----- 
Фёдар Стрыжнёў(Fiodar Stryzhniou) <fedor_qd@mail.ru>

[-- Attachment #2: unalighned_reloc_report.zip --]
[-- Type: application/zip, Size: 7556 bytes --]

Re: Symbian: unalighned relocations for pointers-to-members

[Richard Earnshaw]

I've had a very quick look at this (I can only look at the compiler 
output as I do not have any of the other symbian-related tools).  The 
only thing I can think of is that the problem is coming from the dwarf 
debug information.  Can you check whether the problem still occurs if 
you add -g0 to the end of the list of compilation options (or remove all 
the -g... options from the compilation command).

R.

On 29/12/2021 11:04, Фёдар Стрыжнёў (Fiodar Stryzhniou) via Gcc-help wrote:
> On Mon, 20 Dec 2021 15:37:26 +0000
> Richard Earnshaw <Richard.Earnshaw@foss.arm.com> wrote:
> 
>> On 16/12/2021 00:39, Фёдар Стрыжнёў (Fiodar Stryzhniou) via Gcc-help wrote:
>>> Hello. I maintain ScummVM port for Symbian Series 60v3. ScummVM is a complete rewrite of hundreds old games' executables and is not an emulator. It's free and opensource.
>>>
>>> Last year, when I prepared a version 2.2.0 in the release, it was faced with the fact that when the Ultima engine is turned on in the executable file (supports Ultima 1, 4, 6, 8), it does not start. Ultima 4 & 6 support disabling allowed SCUMMVM. In the spring of this year, after some changes in the source code Ultima, the elf2e32 utility has begun to complete the work with the error "Line 427". To clarify the causes of the error, a rebeling of the code responsible for the support of Ultima 4 & 6 was carried out.
>>> The rebel passed as follows:
>>> 1. Removed ultima.lib (Static Library)
>>> 2. Left the entry point, deleted all other files associated with Ultima 4/6 from the project assembly
>>> 3. Collected ultima.lib, then collected scummvm.exe
>>> 4. Added files to the project and continued to collect until the error did not jump out.
>>>
>>> I have done these steps first for Ultima 4, then - 6. In both cases, the reason was pointer-to-member array declaration.
>>> Ultima 4 - https://github.com/scummvm/scummvm/blob/master/engines/ultima/ultima4/game/item.cpp#L49
>>> Ultima 6 - https://github.com/scummvm/scummvm/blob/master/engines/ultima/nuvie/usecode/u6_object_types.h#L28
>>>
>>> elf2e32 creates E32 aka EPOC32 aka Symbian exe and dlls from elf.
>>>
>>> Analysis of the elf2e32 source code indicated the reason - when checking the created file, unaligned relocations were found. After modifying the source code, the elf2e32 was printed unaligned relocations. I redirect to file "readelf -a <name of elf>". I find several random Elf32_Rel r_offset from elf2e32 in readelf output. GCC 5.4.0 and 11.2.0 give same result.
>>>
>>>
>>
>> I can't tell from this what the issue might be.  To stand any chance of
>> proceeding further, I think we're going to need a simple,
>> self-contained, testcase that can demonstrate the problem.
>>
>> I don't think I've seen a question about SymbianOS support in over 5
>> years, now, possibly longer.  Given that SymbianOS itself was
>> discontinued back around 2013 (8 years ago now), the GCC port has
>> declined to the point where I suspect it's likely to get deprecated
>> soon, due to lack of maintenance.
>>
>> R.
> 
> I made very small testcase in main.cpp. Attachment contains Carbide С++
> project files too if needed.
> 
> Console output taken from Carbide C++:
> Using built-in specs.
> COLLECT_GCC=arm-none-symbianelf-gcc
> Target: arm-none-symbianelf
> Configured with: ../gcc-11.2.0/./configure --target=arm-none-symbianelf
> --prefix=/usr/local/gcc-11.2.0 --without-headers --enable-languages=c,c+
> +,lto --enable-poison-system-directories --enable-lto --with-newlib
> --enable-long-long --with-libiconv-prefix=/usr/local --with-dwarf2
> --enable-interwork --enable-tls --enable-multilib
> --disable-hosted-libstdcxx --disable-libstdcxx-pch
> --disable-option-checking --disable-threads --disable-nls
> --disable-win32-registry --disable-libssp --disable-shared
> --enable-wchar_t --enable-extra-sgxxlite-multilibs --enable-c99
> --with-static-standard-libraries Thread model: single Supported LTO
> compression algorithms: zlib gcc version 11.2.0 (GCC)
> COLLECT_GCC_OPTIONS='-g3' '-gdwarf-2' '-fexceptions' '-Wall'
> '-Wno-unknown-pragmas'  '-mapcs-frame' '-mthumb-interwork' '-pipe'
> '-nostdinc' '-c' '-Wno-multichar' '-Wno-unused' '-Wformat=0' '-v'
> '-marm' '-mfloat-abi=soft' '-D' '__MARM_INTERWORK__' '-MD' '-D'
> '_DEBUG' '-D' '_UNICODE' '-D' '__GCCE__' '-D' '__SYMBIAN32__' '-D'
> '__S60_50__' '-D' '__S60_3X__' '-D' '__SERIES60_3X__' '-D' '__GCCE__'
> '-D' '__EPOC32__' '-D' '__MARM__' '-D' '__EABI__' '-D' '__MARM_ARMV5__'
> '-D' '__EXE__' '-D' '__SUPPORT_CPP_EXCEPTIONS__' '-D' '__MARM_ARMV5__'
> '-D'
> '__PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh"'
> '-Wno-ctor-dtor-privacy' '-fpermissive' '-std=c++14' '-include'
> '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h' '-I'
> '/Symbian/Projects/unalighned_reloc_report/src' '-I'
> '/Symbian/Projects/unalighned_reloc_report/inc' '-I'
> '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include' '-I'
> '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant' '-I'
> 'd:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include'
> '-o'
> '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.o'
> '-mlibarch=armv5t' '-march=armv5t' '-dumpdir'
> '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/'
> d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/arm-none-symbianelf/11.2.0/cc1plus.exe
> -quiet -nostdinc -v -I /Symbian/Projects/unalighned_reloc_report/src
> -I /Symbian/Projects/unalighned_reloc_report/inc
> -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include
> -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant -I
> d:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include
> -iprefix d:\mingw\msys\1.0\local\gcc-11.2.0\bin
> \../lib/gcc/arm-none-symbianelf/11.2.0/
> -MD /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.d
> -MQ /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.o
> -dD -D__USES_INITFINI__ -D __MARM_INTERWORK__ -D _DEBUG -D _UNICODE -D
> __GCCE__ -D __SYMBIAN32__ -D __S60_50__ -D __S60_3X__ -D
> __SERIES60_3X__ -D __GCCE__ -D __EPOC32__ -D __MARM__ -D __EABI__ -D
> __MARM_ARMV5__ -D __EXE__ -D __SUPPORT_CPP_EXCEPTIONS__ -D
> __MARM_ARMV5__ -D
> __PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh"
> -include /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h /Symbian/Projects/unalighned_reloc_report/src/main.cpp
> -fno-builtin -fvisibility=hidden -fno-short-enums -fshort-wchar -quiet
> -dumpdir /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/
> -dumpbase main.cpp -dumpbase-ext .cpp -mapcs-frame -mthumb-interwork
> -marm -mfloat-abi=soft -mlibarch=armv5t -march=armv5t -g3 -gdwarf-2
> -Wall -Wno-unknown-pragmas -Wno-multichar -Wno-unused -Wformat=0
> -Wno-ctor-dtor-privacy -std=c++14 -version -fexceptions -fpermissive
> -fno-builtin -fvisibility=hidden -fno-short-enums -fshort-wchar -o - |
> d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/bin/as.exe
> -march=armv5t -mapcs-frame -mfpu=vfp -mthumb-interwork -mfloat-abi=soft
> -meabi=5
> -o /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.o
> GNU C++14 (GCC) version 11.2.0 (arm-none-symbianelf) compiled by GNU C
> version 6.3.0, GMP version 6.1.0, MPFR version 4.1.0, MPC version
> 1.2.1, isl version isl-0.16.1-GMP
> 
> GGC heuristics: --param ggc-min-expand=100 --param
> ggc-min-heapsize=131072
> #include "..." search starts here:
> #include <...> search starts here:
>   /Symbian/Projects/unalighned_reloc_report/src
>   /Symbian/Projects/unalighned_reloc_report/inc
>   /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include
>   /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant
>   d:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include
> End of search list.
> GNU C++14 (GCC) version 11.2.0 (arm-none-symbianelf)
> 	compiled by GNU C version 6.3.0, GMP version 6.1.0, MPFR
> version 4.1.0, MPC version 1.2.1, isl version isl-0.16.1-GMP
> 
> GGC heuristics: --param ggc-min-expand=100 --param
> ggc-min-heapsize=131072 Compiler executable checksum:
> 7bd26c26f5e3795062462f9efc696d4f
> COMPILER_PATH=d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/arm-none-symbianelf/11.2.0/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/bin/
> LIBRARY_PATH=d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/lib/
> COLLECT_GCC_OPTIONS='-g3' '-gdwarf-2' '-fexceptions' '-Wall'
> '-Wno-unknown-pragmas'  '-mapcs-frame' '-mthumb-interwork' '-pipe'
> '-nostdinc' '-c' '-Wno-multichar' '-Wno-unused' '-Wformat=0' '-v'
> '-marm' '-mfloat-abi=soft' '-D' '__MARM_INTERWORK__' '-MD' '-D'
> '_DEBUG' '-D' '_UNICODE' '-D' '__GCCE__' '-D' '__SYMBIAN32__' '-D'
> '__S60_50__' '-D' '__S60_3X__' '-D' '__SERIES60_3X__' '-D' '__GCCE__'
> '-D' '__EPOC32__' '-D' '__MARM__' '-D' '__EABI__' '-D' '__MARM_ARMV5__'
> '-D' '__EXE__' '-D' '__SUPPORT_CPP_EXCEPTIONS__' '-D' '__MARM_ARMV5__'
> '-D'
> '__PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh"'
> '-Wno-ctor-dtor-privacy' '-fpermissive' '-std=c++14' '-include'
> '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h' '-I'
> '/Symbian/Projects/unalighned_reloc_report/src' '-I'
> '/Symbian/Projects/unalighned_reloc_report/inc' '-I'
> '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include' '-I'
> '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant' '-I'
> 'd:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include'
> '-o'
> '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.o'
> '-mlibarch=armv5t' '-march=armv5t' '-dumpdir'
> '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.'
> ‘files copied:         1. line 437 elf2e32 : Error: E1066: Image failed
> validation make[1]: *** [\Symbian\S60_5th_Edition_SDK_v1.0\epoc32
> \release\gcce\udeb\unalighned_reloc_report.exe] Error 1 make: ***
> [TARGETUNALIGHNED_RELOC_REPORT] Error 2
> 
> -----
> Фёдар Стрыжнёў(Fiodar Stryzhniou) <fedor_qd@mail.ru>
> 

Re: Symbian: unalighned relocations for pointers-to-members

[Фёдар Стрыжнёў]

On Tue, 4 Jan 2022 13:01:14 +0000
Richard Earnshaw <Richard.Earnshaw@foss.arm.com> wrote:

> I've had a very quick look at this (I can only look at the compiler 
> output as I do not have any of the other symbian-related tools).  The 
> only thing I can think of is that the problem is coming from the dwarf 
> debug information.  Can you check whether the problem still occurs if 
> you add -g0 to the end of the list of compilation options (or remove all 
> the -g... options from the compilation command).
> 
> R.

Sorry for long response. You mail was moved to spam by mail provider.

Error remains.

I made this file OS-independent. It can be linked and compiled by GCC.
I compile and use object dump. Found unaligned entry. Is it error?

Output:
arm-none-symbianelf-gcc -c -marm main.cpp
arm-none-symbianelf-readelf -a main.o
Relocation section '.rel.rodata' at offset 0x9e0 contains 8 entries:
 Offset     Info    Type            Sym.Value  Sym. Name
00000058  00000f02 R_ARM_ABS32       00000000   .rodata
00000060  00000f02 R_ARM_ABS32       00000000   .rodata
00000064  00001a02 R_ARM_ABS32       00000000   _ZN5Items17isRune[...]
0000006c  00001b02 R_ARM_ABS32       00000000   _ZN5Items18putRun[...]
00000081  00000f02 R_ARM_ABS32       00000000   .rodata
      ^^
00000089  00000f02 R_ARM_ABS32       00000000   .rodata
0000008d  00001a02 R_ARM_ABS32       00000000   _ZN5Items17isRune[...]
00000095  00001b02 R_ARM_ABS32       00000000   _ZN5Items18putRun[...]
> 
> On 29/12/2021 11:04, Фёдар Стрыжнёў (Fiodar Stryzhniou) via Gcc-help wrote:
> > On Mon, 20 Dec 2021 15:37:26 +0000
> > Richard Earnshaw <Richard.Earnshaw@foss.arm.com> wrote:
> > 
> >> On 16/12/2021 00:39, Фёдар Стрыжнёў (Fiodar Stryzhniou) via Gcc-help wrote:
> >>> Hello. I maintain ScummVM port for Symbian Series 60v3. ScummVM is a complete rewrite of hundreds old games' executables and is not an emulator. It's free and opensource.
> >>>
> >>> Last year, when I prepared a version 2.2.0 in the release, it was faced with the fact that when the Ultima engine is turned on in the executable file (supports Ultima 1, 4, 6, 8), it does not start. Ultima 4 & 6 support disabling allowed SCUMMVM. In the spring of this year, after some changes in the source code Ultima, the elf2e32 utility has begun to complete the work with the error "Line 427". To clarify the causes of the error, a rebeling of the code responsible for the support of Ultima 4 & 6 was carried out.
> >>> The rebel passed as follows:
> >>> 1. Removed ultima.lib (Static Library)
> >>> 2. Left the entry point, deleted all other files associated with Ultima 4/6 from the project assembly
> >>> 3. Collected ultima.lib, then collected scummvm.exe
> >>> 4. Added files to the project and continued to collect until the error did not jump out.
> >>>
> >>> I have done these steps first for Ultima 4, then - 6. In both cases, the reason was pointer-to-member array declaration.
> >>> Ultima 4 - https://github.com/scummvm/scummvm/blob/master/engines/ultima/ultima4/game/item.cpp#L49
> >>> Ultima 6 - https://github.com/scummvm/scummvm/blob/master/engines/ultima/nuvie/usecode/u6_object_types.h#L28
> >>>
> >>> elf2e32 creates E32 aka EPOC32 aka Symbian exe and dlls from elf.
> >>>
> >>> Analysis of the elf2e32 source code indicated the reason - when checking the created file, unaligned relocations were found. After modifying the source code, the elf2e32 was printed unaligned relocations. I redirect to file "readelf -a <name of elf>". I find several random Elf32_Rel r_offset from elf2e32 in readelf output. GCC 5.4.0 and 11.2.0 give same result.
> >>>
> >>>
> >>
> >> I can't tell from this what the issue might be.  To stand any chance of
> >> proceeding further, I think we're going to need a simple,
> >> self-contained, testcase that can demonstrate the problem.
> >>
> >> I don't think I've seen a question about SymbianOS support in over 5
> >> years, now, possibly longer.  Given that SymbianOS itself was
> >> discontinued back around 2013 (8 years ago now), the GCC port has
> >> declined to the point where I suspect it's likely to get deprecated
> >> soon, due to lack of maintenance.
> >>
> >> R.
> > 
> > I made very small testcase in main.cpp. Attachment contains Carbide С++
> > project files too if needed.
> > 
> > Console output taken from Carbide C++:
> > Using built-in specs.
> > COLLECT_GCC=arm-none-symbianelf-gcc
> > Target: arm-none-symbianelf
> > Configured with: ../gcc-11.2.0/./configure --target=arm-none-symbianelf
> > --prefix=/usr/local/gcc-11.2.0 --without-headers --enable-languages=c,c+
> > +,lto --enable-poison-system-directories --enable-lto --with-newlib
> > --enable-long-long --with-libiconv-prefix=/usr/local --with-dwarf2
> > --enable-interwork --enable-tls --enable-multilib
> > --disable-hosted-libstdcxx --disable-libstdcxx-pch
> > --disable-option-checking --disable-threads --disable-nls
> > --disable-win32-registry --disable-libssp --disable-shared
> > --enable-wchar_t --enable-extra-sgxxlite-multilibs --enable-c99
> > --with-static-standard-libraries Thread model: single Supported LTO
> > compression algorithms: zlib gcc version 11.2.0 (GCC)
> > COLLECT_GCC_OPTIONS='-g3' '-gdwarf-2' '-fexceptions' '-Wall'
> > '-Wno-unknown-pragmas'  '-mapcs-frame' '-mthumb-interwork' '-pipe'
> > '-nostdinc' '-c' '-Wno-multichar' '-Wno-unused' '-Wformat=0' '-v'
> > '-marm' '-mfloat-abi=soft' '-D' '__MARM_INTERWORK__' '-MD' '-D'
> > '_DEBUG' '-D' '_UNICODE' '-D' '__GCCE__' '-D' '__SYMBIAN32__' '-D'
> > '__S60_50__' '-D' '__S60_3X__' '-D' '__SERIES60_3X__' '-D' '__GCCE__'
> > '-D' '__EPOC32__' '-D' '__MARM__' '-D' '__EABI__' '-D' '__MARM_ARMV5__'
> > '-D' '__EXE__' '-D' '__SUPPORT_CPP_EXCEPTIONS__' '-D' '__MARM_ARMV5__'
> > '-D'
> > '__PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh"'
> > '-Wno-ctor-dtor-privacy' '-fpermissive' '-std=c++14' '-include'
> > '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h' '-I'
> > '/Symbian/Projects/unalighned_reloc_report/src' '-I'
> > '/Symbian/Projects/unalighned_reloc_report/inc' '-I'
> > '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include' '-I'
> > '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant' '-I'
> > 'd:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include'
> > '-o'
> > '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.o'
> > '-mlibarch=armv5t' '-march=armv5t' '-dumpdir'
> > '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/'
> > d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/arm-none-symbianelf/11.2.0/cc1plus.exe
> > -quiet -nostdinc -v -I /Symbian/Projects/unalighned_reloc_report/src
> > -I /Symbian/Projects/unalighned_reloc_report/inc
> > -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include
> > -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant -I
> > d:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include
> > -iprefix d:\mingw\msys\1.0\local\gcc-11.2.0\bin
> > \../lib/gcc/arm-none-symbianelf/11.2.0/
> > -MD /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.d
> > -MQ /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.o
> > -dD -D__USES_INITFINI__ -D __MARM_INTERWORK__ -D _DEBUG -D _UNICODE -D
> > __GCCE__ -D __SYMBIAN32__ -D __S60_50__ -D __S60_3X__ -D
> > __SERIES60_3X__ -D __GCCE__ -D __EPOC32__ -D __MARM__ -D __EABI__ -D
> > __MARM_ARMV5__ -D __EXE__ -D __SUPPORT_CPP_EXCEPTIONS__ -D
> > __MARM_ARMV5__ -D
> > __PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh"
> > -include /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h /Symbian/Projects/unalighned_reloc_report/src/main.cpp
> > -fno-builtin -fvisibility=hidden -fno-short-enums -fshort-wchar -quiet
> > -dumpdir /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/
> > -dumpbase main.cpp -dumpbase-ext .cpp -mapcs-frame -mthumb-interwork
> > -marm -mfloat-abi=soft -mlibarch=armv5t -march=armv5t -g3 -gdwarf-2
> > -Wall -Wno-unknown-pragmas -Wno-multichar -Wno-unused -Wformat=0
> > -Wno-ctor-dtor-privacy -std=c++14 -version -fexceptions -fpermissive
> > -fno-builtin -fvisibility=hidden -fno-short-enums -fshort-wchar -o - |
> > d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/bin/as.exe
> > -march=armv5t -mapcs-frame -mfpu=vfp -mthumb-interwork -mfloat-abi=soft
> > -meabi=5
> > -o /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.o
> > GNU C++14 (GCC) version 11.2.0 (arm-none-symbianelf) compiled by GNU C
> > version 6.3.0, GMP version 6.1.0, MPFR version 4.1.0, MPC version
> > 1.2.1, isl version isl-0.16.1-GMP
> > 
> > GGC heuristics: --param ggc-min-expand=100 --param
> > ggc-min-heapsize=131072
> > #include "..." search starts here:
> > #include <...> search starts here:
> >   /Symbian/Projects/unalighned_reloc_report/src
> >   /Symbian/Projects/unalighned_reloc_report/inc
> >   /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include
> >   /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant
> >   d:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include
> > End of search list.
> > GNU C++14 (GCC) version 11.2.0 (arm-none-symbianelf)
> > 	compiled by GNU C version 6.3.0, GMP version 6.1.0, MPFR
> > version 4.1.0, MPC version 1.2.1, isl version isl-0.16.1-GMP
> > 
> > GGC heuristics: --param ggc-min-expand=100 --param
> > ggc-min-heapsize=131072 Compiler executable checksum:
> > 7bd26c26f5e3795062462f9efc696d4f
> > COMPILER_PATH=d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/arm-none-symbianelf/11.2.0/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/bin/
> > LIBRARY_PATH=d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/lib/
> > COLLECT_GCC_OPTIONS='-g3' '-gdwarf-2' '-fexceptions' '-Wall'
> > '-Wno-unknown-pragmas'  '-mapcs-frame' '-mthumb-interwork' '-pipe'
> > '-nostdinc' '-c' '-Wno-multichar' '-Wno-unused' '-Wformat=0' '-v'
> > '-marm' '-mfloat-abi=soft' '-D' '__MARM_INTERWORK__' '-MD' '-D'
> > '_DEBUG' '-D' '_UNICODE' '-D' '__GCCE__' '-D' '__SYMBIAN32__' '-D'
> > '__S60_50__' '-D' '__S60_3X__' '-D' '__SERIES60_3X__' '-D' '__GCCE__'
> > '-D' '__EPOC32__' '-D' '__MARM__' '-D' '__EABI__' '-D' '__MARM_ARMV5__'
> > '-D' '__EXE__' '-D' '__SUPPORT_CPP_EXCEPTIONS__' '-D' '__MARM_ARMV5__'
> > '-D'
> > '__PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh"'
> > '-Wno-ctor-dtor-privacy' '-fpermissive' '-std=c++14' '-include'
> > '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h' '-I'
> > '/Symbian/Projects/unalighned_reloc_report/src' '-I'
> > '/Symbian/Projects/unalighned_reloc_report/inc' '-I'
> > '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include' '-I'
> > '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant' '-I'
> > 'd:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include'
> > '-o'
> > '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.o'
> > '-mlibarch=armv5t' '-march=armv5t' '-dumpdir'
> > '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.'
> > ‘files copied:         1. line 437 elf2e32 : Error: E1066: Image failed
> > validation make[1]: *** [\Symbian\S60_5th_Edition_SDK_v1.0\epoc32
> > \release\gcce\udeb\unalighned_reloc_report.exe] Error 1 make: ***
> > [TARGETUNALIGHNED_RELOC_REPORT] Error 2
> > 
> > -----
> > Фёдар Стрыжнёў(Fiodar Stryzhniou) <fedor_qd@mail.ru>
> > 


----- 
Фёдар Стрыжнёў(Fiodar Stryzhniou) <fedor_qd@mail.ru>

Re: Symbian: unalighned relocations for pointers-to-members

[Richard Earnshaw]

[Sending a copy to the list as this was accidentally moved to private mail]

On 16/01/2022 11:52, Фёдар Стрыжнёў (Fiodar Stryzhniou) wrote:
> On Tue, 4 Jan 2022 13:01:14 +0000
> Richard Earnshaw <Richard.Earnshaw@foss.arm.com> wrote:
> 
>> I've had a very quick look at this (I can only look at the compiler 
>> output as I do not have any of the other symbian-related tools).  The 
>> only thing I can think of is that the problem is coming from the dwarf 
>> debug information.  Can you check whether the problem still occurs if 
>> you add -g0 to the end of the list of compilation options (or remove all 
>> the -g... options from the compilation command).
>>
>> R.
> 
> Sorry for long response. You mail was moved to spam by mail provider.
> 
> Error remains.
> 
> I made this file OS-independent. It can be linked and compiled by GCC.
> I compile and use object dump. Found unaligned entry. Is it error?
> 

> No, I think that's an exact consequence of having a packed data type.
This is the relevant part of the assembly file (after passing through
the demangler):
>
>          .section        .rodata
>          .align  2
> .LC0:
>          .ascii  "the rune of Spirituality\000"
>          .align  2
> .LC1:
>          .ascii  "spiritualityrune\000"
>          .align  2
> .LC2:
>          .ascii  "the rune of Humility\000"
>          .align  2
> .LC3:
>          .ascii  "humilityrune\000"
>          .align  2
>          .type   Items::ITEMS, %object
>          .size   Items::ITEMS, 1394
> Items::ITEMS:
>                  // RE: ITEMS[0]
>          .word   .LC0
>          .word   0
>          .word   .LC1
>          .word   Items::isRuneInInventory(int)
>          .word   0
>          .word   Items::putRuneInInventory(int)
>          .word   0
>          .word   0
>          .word   0
>          .word   64
>          .byte   0
>                  // RE: ITEMS[1]
>          .4byte  .LC2
>          .4byte  0
>          .4byte  .LC3
>          .4byte  Items::isRuneInInventory(int)
>          .4byte  0
>          .4byte  Items::putRuneInInventory(int)
>          .4byte  0
>          .4byte  0
>          .4byte  0
>          .4byte  128
>          .byte   0
>                  // RE: And some empty space.
>          .space  1312
>
> Note that each entry in the ITEMS list is 41 bytes, so the second
> element (and third and fourth, if initialized) has to be placed in an
> unaligned location (because the structure has been packed).  Note that
> the .4byte directive is used by the compiler when it knows that the
> element can be misaligned.

Sorry, I meant to also say that your source code is using two ways of
forcing packing: pragma pack and __attribute((packed)).  If I remove
both of those, then the output becomes

Items::ITEMS:
        .word   .LC0
        .word   0
        .word   .LC1
        .word   Items::isRuneInInventory(int)
        .word   0
        .word   Items::putRuneInInventory(int)
        .word   0
        .word   0
        .word   0
        .word   64
        .byte   0
        .space  3
        .word   .LC2
        .word   0
        .word   .LC3
        .word   Items::isRuneInInventory(int)
        .word   0
        .word   Items::putRuneInInventory(int)
        .word   0
        .word   0
        .word   0
        .word   128
        .byte   0
        .space  3
        .space  1408

and we can see that the data is all now fully aligned.  Leaving either
one of the packed directives in place obviously leads to the object
containing unaligned pointers, which leads to the unaligned relocations.

AAELF (the ELF specification binding for Arm) states:

  Except as indicated in Table 4-10, Static Data relocations with
  non-standard size or processing all static data relocations have
  size 4, alignment 1 and [...].

R_ARM_ABS32 is not listed in Table 4-10, so can have any alignment.


R.


> Output:
> arm-none-symbianelf-gcc -c -marm main.cpp
> arm-none-symbianelf-readelf -a main.o
> Relocation section '.rel.rodata' at offset 0x9e0 contains 8 entries:
>  Offset     Info    Type            Sym.Value  Sym. Name
> 00000058  00000f02 R_ARM_ABS32       00000000   .rodata
> 00000060  00000f02 R_ARM_ABS32       00000000   .rodata
> 00000064  00001a02 R_ARM_ABS32       00000000   _ZN5Items17isRune[...]
> 0000006c  00001b02 R_ARM_ABS32       00000000   _ZN5Items18putRun[...]
> 00000081  00000f02 R_ARM_ABS32       00000000   .rodata
>       ^^
> 00000089  00000f02 R_ARM_ABS32       00000000   .rodata
> 0000008d  00001a02 R_ARM_ABS32       00000000   _ZN5Items17isRune[...]
> 00000095  00001b02 R_ARM_ABS32       00000000   _ZN5Items18putRun[...]
>>
>> On 29/12/2021 11:04, Фёдар Стрыжнёў (Fiodar Stryzhniou) via Gcc-help wrote:
>>> On Mon, 20 Dec 2021 15:37:26 +0000
>>> Richard Earnshaw <Richard.Earnshaw@foss.arm.com> wrote:
>>>
>>>> On 16/12/2021 00:39, Фёдар Стрыжнёў (Fiodar Stryzhniou) via Gcc-help wrote:
>>>>> Hello. I maintain ScummVM port for Symbian Series 60v3. ScummVM is a complete rewrite of hundreds old games' executables and is not an emulator. It's free and opensource.
>>>>>
>>>>> Last year, when I prepared a version 2.2.0 in the release, it was faced with the fact that when the Ultima engine is turned on in the executable file (supports Ultima 1, 4, 6, 8), it does not start. Ultima 4 & 6 support disabling allowed SCUMMVM. In the spring of this year, after some changes in the source code Ultima, the elf2e32 utility has begun to complete the work with the error "Line 427". To clarify the causes of the error, a rebeling of the code responsible for the support of Ultima 4 & 6 was carried out.
>>>>> The rebel passed as follows:
>>>>> 1. Removed ultima.lib (Static Library)
>>>>> 2. Left the entry point, deleted all other files associated with Ultima 4/6 from the project assembly
>>>>> 3. Collected ultima.lib, then collected scummvm.exe
>>>>> 4. Added files to the project and continued to collect until the error did not jump out.
>>>>>
>>>>> I have done these steps first for Ultima 4, then - 6. In both cases, the reason was pointer-to-member array declaration.
>>>>> Ultima 4 - https://github.com/scummvm/scummvm/blob/master/engines/ultima/ultima4/game/item.cpp#L49
>>>>> Ultima 6 - https://github.com/scummvm/scummvm/blob/master/engines/ultima/nuvie/usecode/u6_object_types.h#L28
>>>>>
>>>>> elf2e32 creates E32 aka EPOC32 aka Symbian exe and dlls from elf.
>>>>>
>>>>> Analysis of the elf2e32 source code indicated the reason - when checking the created file, unaligned relocations were found. After modifying the source code, the elf2e32 was printed unaligned relocations. I redirect to file "readelf -a <name of elf>". I find several random Elf32_Rel r_offset from elf2e32 in readelf output. GCC 5.4.0 and 11.2.0 give same result.
>>>>>
>>>>>
>>>>
>>>> I can't tell from this what the issue might be.  To stand any chance of
>>>> proceeding further, I think we're going to need a simple,
>>>> self-contained, testcase that can demonstrate the problem.
>>>>
>>>> I don't think I've seen a question about SymbianOS support in over 5
>>>> years, now, possibly longer.  Given that SymbianOS itself was
>>>> discontinued back around 2013 (8 years ago now), the GCC port has
>>>> declined to the point where I suspect it's likely to get deprecated
>>>> soon, due to lack of maintenance.
>>>>
>>>> R.
>>>
>>> I made very small testcase in main.cpp. Attachment contains Carbide С++
>>> project files too if needed.
>>>
>>> Console output taken from Carbide C++:
>>> Using built-in specs.
>>> COLLECT_GCC=arm-none-symbianelf-gcc
>>> Target: arm-none-symbianelf
>>> Configured with: ../gcc-11.2.0/./configure --target=arm-none-symbianelf
>>> --prefix=/usr/local/gcc-11.2.0 --without-headers --enable-languages=c,c+
>>> +,lto --enable-poison-system-directories --enable-lto --with-newlib
>>> --enable-long-long --with-libiconv-prefix=/usr/local --with-dwarf2
>>> --enable-interwork --enable-tls --enable-multilib
>>> --disable-hosted-libstdcxx --disable-libstdcxx-pch
>>> --disable-option-checking --disable-threads --disable-nls
>>> --disable-win32-registry --disable-libssp --disable-shared
>>> --enable-wchar_t --enable-extra-sgxxlite-multilibs --enable-c99
>>> --with-static-standard-libraries Thread model: single Supported LTO
>>> compression algorithms: zlib gcc version 11.2.0 (GCC)
>>> COLLECT_GCC_OPTIONS='-g3' '-gdwarf-2' '-fexceptions' '-Wall'
>>> '-Wno-unknown-pragmas'  '-mapcs-frame' '-mthumb-interwork' '-pipe'
>>> '-nostdinc' '-c' '-Wno-multichar' '-Wno-unused' '-Wformat=0' '-v'
>>> '-marm' '-mfloat-abi=soft' '-D' '__MARM_INTERWORK__' '-MD' '-D'
>>> '_DEBUG' '-D' '_UNICODE' '-D' '__GCCE__' '-D' '__SYMBIAN32__' '-D'
>>> '__S60_50__' '-D' '__S60_3X__' '-D' '__SERIES60_3X__' '-D' '__GCCE__'
>>> '-D' '__EPOC32__' '-D' '__MARM__' '-D' '__EABI__' '-D' '__MARM_ARMV5__'
>>> '-D' '__EXE__' '-D' '__SUPPORT_CPP_EXCEPTIONS__' '-D' '__MARM_ARMV5__'
>>> '-D'
>>> '__PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh"'
>>> '-Wno-ctor-dtor-privacy' '-fpermissive' '-std=c++14' '-include'
>>> '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h' '-I'
>>> '/Symbian/Projects/unalighned_reloc_report/src' '-I'
>>> '/Symbian/Projects/unalighned_reloc_report/inc' '-I'
>>> '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include' '-I'
>>> '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant' '-I'
>>> 'd:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include'
>>> '-o'
>>> '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.o'
>>> '-mlibarch=armv5t' '-march=armv5t' '-dumpdir'
>>> '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/'
>>> d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/arm-none-symbianelf/11.2.0/cc1plus.exe
>>> -quiet -nostdinc -v -I /Symbian/Projects/unalighned_reloc_report/src
>>> -I /Symbian/Projects/unalighned_reloc_report/inc
>>> -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include
>>> -I /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant -I
>>> d:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include
>>> -iprefix d:\mingw\msys\1.0\local\gcc-11.2.0\bin
>>> \../lib/gcc/arm-none-symbianelf/11.2.0/
>>> -MD /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.d
>>> -MQ /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.o
>>> -dD -D__USES_INITFINI__ -D __MARM_INTERWORK__ -D _DEBUG -D _UNICODE -D
>>> __GCCE__ -D __SYMBIAN32__ -D __S60_50__ -D __S60_3X__ -D
>>> __SERIES60_3X__ -D __GCCE__ -D __EPOC32__ -D __MARM__ -D __EABI__ -D
>>> __MARM_ARMV5__ -D __EXE__ -D __SUPPORT_CPP_EXCEPTIONS__ -D
>>> __MARM_ARMV5__ -D
>>> __PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh"
>>> -include /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h /Symbian/Projects/unalighned_reloc_report/src/main.cpp
>>> -fno-builtin -fvisibility=hidden -fno-short-enums -fshort-wchar -quiet
>>> -dumpdir /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/
>>> -dumpbase main.cpp -dumpbase-ext .cpp -mapcs-frame -mthumb-interwork
>>> -marm -mfloat-abi=soft -mlibarch=armv5t -march=armv5t -g3 -gdwarf-2
>>> -Wall -Wno-unknown-pragmas -Wno-multichar -Wno-unused -Wformat=0
>>> -Wno-ctor-dtor-privacy -std=c++14 -version -fexceptions -fpermissive
>>> -fno-builtin -fvisibility=hidden -fno-short-enums -fshort-wchar -o - |
>>> d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/bin/as.exe
>>> -march=armv5t -mapcs-frame -mfpu=vfp -mthumb-interwork -mfloat-abi=soft
>>> -meabi=5
>>> -o /Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.o
>>> GNU C++14 (GCC) version 11.2.0 (arm-none-symbianelf) compiled by GNU C
>>> version 6.3.0, GMP version 6.1.0, MPFR version 4.1.0, MPC version
>>> 1.2.1, isl version isl-0.16.1-GMP
>>>
>>> GGC heuristics: --param ggc-min-expand=100 --param
>>> ggc-min-heapsize=131072
>>> #include "..." search starts here:
>>> #include <...> search starts here:
>>>   /Symbian/Projects/unalighned_reloc_report/src
>>>   /Symbian/Projects/unalighned_reloc_report/inc
>>>   /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include
>>>   /Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant
>>>   d:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include
>>> End of search list.
>>> GNU C++14 (GCC) version 11.2.0 (arm-none-symbianelf)
>>> 	compiled by GNU C version 6.3.0, GMP version 6.1.0, MPFR
>>> version 4.1.0, MPC version 1.2.1, isl version isl-0.16.1-GMP
>>>
>>> GGC heuristics: --param ggc-min-expand=100 --param
>>> ggc-min-heapsize=131072 Compiler executable checksum:
>>> 7bd26c26f5e3795062462f9efc696d4f
>>> COMPILER_PATH=d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/arm-none-symbianelf/11.2.0/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../libexec/gcc/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/bin/
>>> LIBRARY_PATH=d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/;d:/mingw/msys/1.0/local/gcc-11.2.0/bin/../lib/gcc/arm-none-symbianelf/11.2.0/../../../../arm-none-symbianelf/lib/
>>> COLLECT_GCC_OPTIONS='-g3' '-gdwarf-2' '-fexceptions' '-Wall'
>>> '-Wno-unknown-pragmas'  '-mapcs-frame' '-mthumb-interwork' '-pipe'
>>> '-nostdinc' '-c' '-Wno-multichar' '-Wno-unused' '-Wformat=0' '-v'
>>> '-marm' '-mfloat-abi=soft' '-D' '__MARM_INTERWORK__' '-MD' '-D'
>>> '_DEBUG' '-D' '_UNICODE' '-D' '__GCCE__' '-D' '__SYMBIAN32__' '-D'
>>> '__S60_50__' '-D' '__S60_3X__' '-D' '__SERIES60_3X__' '-D' '__GCCE__'
>>> '-D' '__EPOC32__' '-D' '__MARM__' '-D' '__EABI__' '-D' '__MARM_ARMV5__'
>>> '-D' '__EXE__' '-D' '__SUPPORT_CPP_EXCEPTIONS__' '-D' '__MARM_ARMV5__'
>>> '-D'
>>> '__PRODUCT_INCLUDE__="/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant/Symbian_OS.hrh"'
>>> '-Wno-ctor-dtor-privacy' '-fpermissive' '-std=c++14' '-include'
>>> '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/INCLUDE/GCCE/gcce.h' '-I'
>>> '/Symbian/Projects/unalighned_reloc_report/src' '-I'
>>> '/Symbian/Projects/unalighned_reloc_report/inc' '-I'
>>> '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include' '-I'
>>> '/Symbian/S60_5th_Edition_SDK_v1.0/epoc32/include/variant' '-I'
>>> 'd:/mingw/msys/1.0/local/gcc-11.2.0/lib/gcc/arm-none-symbianelf/11.2.0/include'
>>> '-o'
>>> '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.o'
>>> '-mlibarch=armv5t' '-march=armv5t' '-dumpdir'
>>> '/Symbian/S60_5th_Edition_SDK_v1.0/EPOC32/BUILD/Symbian/Projects/unalighned_reloc_report/epoc/UNALIGHNED_RELOC_REPORT/GCCE/udeb/main.'
>>> ‘files copied:         1. line 437 elf2e32 : Error: E1066: Image failed
>>> validation make[1]: *** [\Symbian\S60_5th_Edition_SDK_v1.0\epoc32
>>> \release\gcce\udeb\unalighned_reloc_report.exe] Error 1 make: ***
>>> [TARGETUNALIGHNED_RELOC_REPORT] Error 2
>>>
>>> -----
>>> Фёдар Стрыжнёў(Fiodar Stryzhniou) <fedor_qd@mail.ru>
>>>
> 
> 
> ----- 
> Фёдар Стрыжнёў(Fiodar Stryzhniou) <fedor_qd@mail.ru>
> 

Re: Symbian: unalighned relocations for pointers-to-members

[Фёдар Стрыжнёў]

How create such output? It's good to know such thing.
----- 
Фёдар Стрыжнёў(Fiodar Stryzhniou)

On Tue, 18 Jan 2022 10:14:17 +0000
Richard Earnshaw <Richard.Earnshaw@foss.arm.com> wrote:

> [Sending a copy to the list as this was accidentally moved to private mail]
> 
> On 16/01/2022 11:52, Фёдар Стрыжнёў (Fiodar Stryzhniou) wrote:
> > On Tue, 4 Jan 2022 13:01:14 +0000
> > Richard Earnshaw <Richard.Earnshaw@foss.arm.com> wrote:
> > 
> >> I've had a very quick look at this (I can only look at the compiler 
> >> output as I do not have any of the other symbian-related tools).  The 
> >> only thing I can think of is that the problem is coming from the dwarf 
> >> debug information.  Can you check whether the problem still occurs if 
> >> you add -g0 to the end of the list of compilation options (or remove all 
> >> the -g... options from the compilation command).
> >>
> >> R.
> > 
> > Sorry for long response. You mail was moved to spam by mail provider.
> > 
> > Error remains.
> > 
> > I made this file OS-independent. It can be linked and compiled by GCC.
> > I compile and use object dump. Found unaligned entry. Is it error?
> > 
> 
> > No, I think that's an exact consequence of having a packed data type.
> This is the relevant part of the assembly file (after passing through
> the demangler):
> >
> >          .section        .rodata
> >          .align  2
> > .LC0:
> >          .ascii  "the rune of Spirituality\000"
> >          .align  2
> > .LC1:
> >          .ascii  "spiritualityrune\000"
> >          .align  2
> > .LC2:
> >          .ascii  "the rune of Humility\000"
> >          .align  2
> > .LC3:
> >          .ascii  "humilityrune\000"
> >          .align  2
> >          .type   Items::ITEMS, %object
> >          .size   Items::ITEMS, 1394
> > Items::ITEMS:
> >                  // RE: ITEMS[0]
> >          .word   .LC0
> >          .word   0
> >          .word   .LC1
> >          .word   Items::isRuneInInventory(int)
> >          .word   0
> >          .word   Items::putRuneInInventory(int)
> >          .word   0
> >          .word   0
> >          .word   0
> >          .word   64
> >          .byte   0
> >                  // RE: ITEMS[1]
> >          .4byte  .LC2
> >          .4byte  0
> >          .4byte  .LC3
> >          .4byte  Items::isRuneInInventory(int)
> >          .4byte  0
> >          .4byte  Items::putRuneInInventory(int)
> >          .4byte  0
> >          .4byte  0
> >          .4byte  0
> >          .4byte  128
> >          .byte   0
> >                  // RE: And some empty space.
> >          .space  1312
> >
> > Note that each entry in the ITEMS list is 41 bytes, so the second
> > element (and third and fourth, if initialized) has to be placed in an
> > unaligned location (because the structure has been packed).  Note that
> > the .4byte directive is used by the compiler when it knows that the
> > element can be misaligned.
> 
> Sorry, I meant to also say that your source code is using two ways of
> forcing packing: pragma pack and __attribute((packed)).  If I remove
> both of those, then the output becomes
> 
> Items::ITEMS:
>         .word   .LC0
>         .word   0
>         .word   .LC1
>         .word   Items::isRuneInInventory(int)
>         .word   0
>         .word   Items::putRuneInInventory(int)
>         .word   0
>         .word   0
>         .word   0
>         .word   64
>         .byte   0
>         .space  3
>         .word   .LC2
>         .word   0
>         .word   .LC3
>         .word   Items::isRuneInInventory(int)
>         .word   0
>         .word   Items::putRuneInInventory(int)
>         .word   0
>         .word   0
>         .word   0
>         .word   128
>         .byte   0
>         .space  3
>         .space  1408
> 
> and we can see that the data is all now fully aligned.  Leaving either
> one of the packed directives in place obviously leads to the object
> containing unaligned pointers, which leads to the unaligned relocations.
> 
> AAELF (the ELF specification binding for Arm) states:
> 
>   Except as indicated in Table 4-10, Static Data relocations with
>   non-standard size or processing all static data relocations have
>   size 4, alignment 1 and [...].
> 
> R_ARM_ABS32 is not listed in Table 4-10, so can have any alignment.
> 
> 
> R.
> 

Re: Symbian: unalighned relocations for pointers-to-members

[Richard Earnshaw]

The assembly output?  Just compile with -S rather than -c and the 
compiler will output the assembler file rather than an object file.

R.


On 21/01/2022 14:17, Фёдар Стрыжнёў (Fiodar Stryzhniou) wrote:
> How create such output? It's good to know such thing.
> -----
> Фёдар Стрыжнёў(Fiodar Stryzhniou)
> 
> On Tue, 18 Jan 2022 10:14:17 +0000
> Richard Earnshaw <Richard.Earnshaw@foss.arm.com> wrote:
> 
>> [Sending a copy to the list as this was accidentally moved to private mail]
>>
>> On 16/01/2022 11:52, Фёдар Стрыжнёў (Fiodar Stryzhniou) wrote:
>>> On Tue, 4 Jan 2022 13:01:14 +0000
>>> Richard Earnshaw <Richard.Earnshaw@foss.arm.com> wrote:
>>>
>>>> I've had a very quick look at this (I can only look at the compiler
>>>> output as I do not have any of the other symbian-related tools).  The
>>>> only thing I can think of is that the problem is coming from the dwarf
>>>> debug information.  Can you check whether the problem still occurs if
>>>> you add -g0 to the end of the list of compilation options (or remove all
>>>> the -g... options from the compilation command).
>>>>
>>>> R.
>>>
>>> Sorry for long response. You mail was moved to spam by mail provider.
>>>
>>> Error remains.
>>>
>>> I made this file OS-independent. It can be linked and compiled by GCC.
>>> I compile and use object dump. Found unaligned entry. Is it error?
>>>
>>
>>> No, I think that's an exact consequence of having a packed data type.
>> This is the relevant part of the assembly file (after passing through
>> the demangler):
>>>
>>>           .section        .rodata
>>>           .align  2
>>> .LC0:
>>>           .ascii  "the rune of Spirituality\000"
>>>           .align  2
>>> .LC1:
>>>           .ascii  "spiritualityrune\000"
>>>           .align  2
>>> .LC2:
>>>           .ascii  "the rune of Humility\000"
>>>           .align  2
>>> .LC3:
>>>           .ascii  "humilityrune\000"
>>>           .align  2
>>>           .type   Items::ITEMS, %object
>>>           .size   Items::ITEMS, 1394
>>> Items::ITEMS:
>>>                   // RE: ITEMS[0]
>>>           .word   .LC0
>>>           .word   0
>>>           .word   .LC1
>>>           .word   Items::isRuneInInventory(int)
>>>           .word   0
>>>           .word   Items::putRuneInInventory(int)
>>>           .word   0
>>>           .word   0
>>>           .word   0
>>>           .word   64
>>>           .byte   0
>>>                   // RE: ITEMS[1]
>>>           .4byte  .LC2
>>>           .4byte  0
>>>           .4byte  .LC3
>>>           .4byte  Items::isRuneInInventory(int)
>>>           .4byte  0
>>>           .4byte  Items::putRuneInInventory(int)
>>>           .4byte  0
>>>           .4byte  0
>>>           .4byte  0
>>>           .4byte  128
>>>           .byte   0
>>>                   // RE: And some empty space.
>>>           .space  1312
>>>
>>> Note that each entry in the ITEMS list is 41 bytes, so the second
>>> element (and third and fourth, if initialized) has to be placed in an
>>> unaligned location (because the structure has been packed).  Note that
>>> the .4byte directive is used by the compiler when it knows that the
>>> element can be misaligned.
>>
>> Sorry, I meant to also say that your source code is using two ways of
>> forcing packing: pragma pack and __attribute((packed)).  If I remove
>> both of those, then the output becomes
>>
>> Items::ITEMS:
>>          .word   .LC0
>>          .word   0
>>          .word   .LC1
>>          .word   Items::isRuneInInventory(int)
>>          .word   0
>>          .word   Items::putRuneInInventory(int)
>>          .word   0
>>          .word   0
>>          .word   0
>>          .word   64
>>          .byte   0
>>          .space  3
>>          .word   .LC2
>>          .word   0
>>          .word   .LC3
>>          .word   Items::isRuneInInventory(int)
>>          .word   0
>>          .word   Items::putRuneInInventory(int)
>>          .word   0
>>          .word   0
>>          .word   0
>>          .word   128
>>          .byte   0
>>          .space  3
>>          .space  1408
>>
>> and we can see that the data is all now fully aligned.  Leaving either
>> one of the packed directives in place obviously leads to the object
>> containing unaligned pointers, which leads to the unaligned relocations.
>>
>> AAELF (the ELF specification binding for Arm) states:
>>
>>    Except as indicated in Table 4-10, Static Data relocations with
>>    non-standard size or processing all static data relocations have
>>    size 4, alignment 1 and [...].
>>
>> R_ARM_ABS32 is not listed in Table 4-10, so can have any alignment.
>>
>>
>> R.
>>