Но, как уже говорилось выше, окончательные перемещения имеют разные типы. Таким образом, ассемблеры работают по-другому. Почему это происходит? ОБРАТИТЕ ВНИМАНИЕ, clang использует callq, что приводит к перемещению символов в оба сценария:
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 ignoring duplicate directory "/usr/include/x86_64-linux-gnu/c++/13" ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu" ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/13/include-fixed/x86_64-linux-gnu" ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/13/include-fixed" ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/13/../../../../x86_64-linux-gnu/include" #include "..." search starts here: #include search starts here: /home/ahmad/Programs/bpftime/build/build/FridaGum-prefix/src/FridaGum /home/ahmad/Programs/bpftime/third_party/spdlog/include /usr/include/c++/13 /usr/include/x86_64-linux-gnu/c++/13 /usr/include/c++/13/backward /usr/lib/gcc/x86_64-linux-gnu/13/include /usr/local/include /usr/include/x86_64-linux-gnu /usr/include End of search list. Compiler executable checksum: 4e0f319cd9945d8f5a9eeeeec1481ba5 In file included from /usr/include/c++/13/string:51, from /usr/include/c++/13/bits/locale_classes.h:40, from /usr/include/c++/13/bits/ios_base.h:41, from /usr/include/c++/13/ios:44, from /usr/include/c++/13/istream:40, from /usr/include/c++/13/sstream:40, from /usr/include/c++/13/chrono:45, from /home/ahmad/Programs/bpftime/third_party/spdlog/include/spdlog/common.h:10, from /home/ahmad/Programs/bpftime/third_party/spdlog/include/spdlog/spdlog.h:12, from /home/ahmad/Programs/bpftime/attach/text_segment_transformer/text_segment_transformer.cpp:1: In static member function ‘static constexpr _Up* std::__copy_move::__copy_m(_Tp*, _Tp*, _Up*) [with _Tp = unsigned char; _Up = unsigned char; bool _IsMove = false]’, inlined from ‘constexpr _OI std::__copy_move_a2(_II, _II, _OI) [with bool _IsMove = false; _II = unsigned char*; _OI = unsigned char*]’ at /usr/include/c++/13/bits/stl_algobase.h:506:30, inlined from ‘constexpr _OI std::__copy_move_a1(_II, _II, _OI) [with bool _IsMove = false; _II = unsigned char*; _OI = unsigned char*]’ at /usr/include/c++/13/bits/stl_algobase.h:533:42, inlined from ‘constexpr _OI std::__copy_move_a(_II, _II, _OI) [with bool _IsMove = false; _II = __gnu_cxx::__normal_iterator; _OI = unsigned char*]’ at /usr/include/c++/13/bits/stl_algobase.h:540:31, inlined from ‘constexpr _OI std::copy(_II, _II, _OI) [with _II = __gnu_cxx::__normal_iterator; _OI = unsigned char*]’ at /usr/include/c++/13/bits/stl_algobase.h:633:7, inlined from ‘void bpftime::setup_syscall_tracer()’ at /home/ahmad/Programs/bpftime/attach/text_segment_transformer/text_segment_transformer.cpp:235:11: /usr/include/c++/13/bits/stl_algobase.h:437:30: warning: ‘void* __builtin_memmove(void*, const void*, long unsigned int)’ writing between 2 and 9223372036854775807 bytes into a region of size 0 overflows the destination [-Wstringop-overflow=] 437 | __builtin_memmove(__result, __first, sizeof(_Tp) * _Num); | ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In function ‘void bpftime::setup_syscall_tracer()’: cc1plus: note: destination object is likely at address zero COLLECT_GCC_OPTIONS='-v' '-D' 'BPFTIME_BUILD_WITH_LIBBPF=1' '-D' 'SPDLOG_COMPILED_LIB' '-D' 'bpftime_text_segment_transformer_EXPORTS' '-I' '/home/ahmad/Programs/bpftime/build/build/FridaGum-prefix/src/FridaGum' '-I' '/home/ahmad/Programs/bpftime/third_party/spdlog/include' '-fno-omit-frame-pointer' '-O3' '-D' 'NDEBUG' '-std=gnu++20' '-fPIC' '-o' 'text_segment_transformer.cpp.o' '-c' '-shared-libgcc' '-mtune=generic' '-march=x86-64' as -v -I /home/ahmad/Programs/bpftime/build/build/FridaGum-prefix/src/FridaGum -I /home/ahmad/Programs/bpftime/third_party/spdlog/include --64 -o text_segment_transformer.cpp.o /tmp/ccrIb4z5.s GNU assembler version 2.42 (x86_64-linux-gnu) using BFD version (GNU Binutils for Ubuntu) 2.42 COMPILER_PATH=/usr/libexec/gcc/x86_64-linux-gnu/13/:/usr/libexec/gcc/x86_64-linux-gnu/13/:/usr/libexec/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/13/:/usr/lib/gcc/x86_64-linux-gnu/ LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/13/:/usr/lib/gcc/x86_64-linux-gnu/13/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/13/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/13/../../../:/lib/:/usr/lib/ COLLECT_GCC_OPTIONS='-v' '-D' 'BPFTIME_BUILD_WITH_LIBBPF=1' '-D' 'SPDLOG_COMPILED_LIB' '-D' 'bpftime_text_segment_transformer_EXPORTS' '-I' '/home/ahmad/Programs/bpftime/build/build/FridaGum-prefix/src/FridaGum' '-I' '/home/ahmad/Programs/bpftime/third_party/spdlog/include' '-fno-omit-frame-pointer' '-O3' '-D' 'NDEBUG' '-std=gnu++20' '-fPIC' '-o' 'text_segment_transformer.cpp.o' '-c' '-shared-libgcc' '-mtune=generic' '-march=x86-64' '-dumpdir' 'text_segment_transformer.cpp.' [/code] Символ syscall_hooker_cxx имеет тип перемещения R_X86_64_PLT32. Команда [b]та же[/b] на Ubuntu 18.04 с использованием [b]собранного вручную[/b] [code]GCC-13.2Компилятор [/code] выдает следующий результат: [code]Using built-in specs. COLLECT_GCC=/usr/bin/c++ Target: x86_64-linux-gnu Configured with: ../configure --prefix=/opt/gcc-13.2.0 --disable-multilib --enable-shared --enable-linker-build-id --without-included-gettext --enable-threads=posix --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-libstdcxx-backtrace --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib --enable-libphobos-checking=release --with-target-system-zlib=auto --enable-objc-gc=auto --disable-werror --enable-cet --with-arch-32=i686 --with-abi=m64 --with-tune=generic --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix Supported LTO compression algorithms: zlib gcc version 13.2.0 (GCC)
COLLECT_GCC_OPTIONS='-v' '-D' 'BPFTIME_BUILD_WITH_LIBBPF=1' '-D' 'SPDLOG_COMPILED_LIB' '-D' 'bpftime_text_segment_transformer_EXPORTS' '-I' '/home/ahmad/Programs/bpftime/build/build/FridaGum-prefix/src/FridaGum' '-I' '/home/ahmad/Programs/bpftime/third_party/spdlog/include' '-fno-omit-frame-pointer' '-O3' '-D' 'NDEBUG' '-std=gnu++20' '-fPIC' '-o' 'text_segment_transformer.cpp.o' '-c' '-shared-libgcc' '-mtune=generic' '-march=x86-64' /opt/gcc-13.2.0/libexec/gcc/x86_64-linux-gnu/13.2.0/cc1plus -quiet -v -I /home/ahmad/Programs/bpftime/build/build/FridaGum-prefix/src/FridaGum -I /home/ahmad/Programs/bpftime/third_party/spdlog/include -imultiarch x86_64-linux-gnu -D_GNU_SOURCE -D BPFTIME_BUILD_WITH_LIBBPF=1 -D SPDLOG_COMPILED_LIB -D bpftime_text_segment_transformer_EXPORTS -D NDEBUG /home/ahmad/Programs/bpftime/attach/text_segment_transformer/text_segment_transformer.cpp -quiet -dumpbase text_segment_transformer.cpp.cpp -dumpbase-ext .cpp -mtune=generic -march=x86-64 -O3 -std=gnu++20 -version -fno-omit-frame-pointer -fPIC -o /tmp/ccIXuruA.s GNU C++20 (GCC) version 13.2.0 (x86_64-linux-gnu) compiled by GNU C version 13.2.0, GMP version 6.3.0, MPFR version 4.2.1, MPC version 1.3.1, isl version none warning: GMP header version 6.3.0 differs from library version 6.1.2. warning: MPFR header version 4.2.1 differs from library version 4.0.1. warning: MPC header version 1.3.1 differs from library version 1.1.0. GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu" ignoring nonexistent directory "/opt/gcc-13.2.0/lib/gcc/x86_64-linux-gnu/13.2.0/../../../../x86_64-linux-gnu/include" #include "..." search starts here: #include search starts here: /home/ahmad/Programs/bpftime/build/build/FridaGum-prefix/src/FridaGum /home/ahmad/Programs/bpftime/third_party/spdlog/include /opt/gcc-13.2.0/lib/gcc/x86_64-linux-gnu/13.2.0/../../../../include/c++/13.2.0 /opt/gcc-13.2.0/lib/gcc/x86_64-linux-gnu/13.2.0/../../../../include/c++/13.2.0/x86_64-linux-gnu /opt/gcc-13.2.0/lib/gcc/x86_64-linux-gnu/13.2.0/../../../../include/c++/13.2.0/backward /opt/gcc-13.2.0/lib/gcc/x86_64-linux-gnu/13.2.0/include /usr/local/include /opt/gcc-13.2.0/include /opt/gcc-13.2.0/lib/gcc/x86_64-linux-gnu/13.2.0/include-fixed/x86_64-linux-gnu /opt/gcc-13.2.0/lib/gcc/x86_64-linux-gnu/13.2.0/include-fixed /usr/include/x86_64-linux-gnu /usr/include End of search list. Compiler executable checksum: 57ec4216d92497ddefc5d01c6cd03e37 In file included from /opt/gcc-13.2.0/include/c++/13.2.0/string:51,
from /opt/gcc-13.2.0/include/c++/13.2.0/bits/locale_classes.h:40, from /opt/gcc-13.2.0/include/c++/13.2.0/bits/ios_base.h:41, from /opt/gcc-13.2.0/include/c++/13.2.0/ios:44, from /opt/gcc-13.2.0/include/c++/13.2.0/istream:40, from /opt/gcc-13.2.0/include/c++/13.2.0/sstream:40, from /opt/gcc-13.2.0/include/c++/13.2.0/chrono:45, from /home/ahmad/Programs/bpftime/third_party/spdlog/include/spdlog/common.h:10, from /home/ahmad/Programs/bpftime/third_party/spdlog/include/spdlog/spdlog.h:12, from /home/ahmad/Programs/bpftime/attach/text_segment_transformer/text_segment_transformer.cpp:1: In static member function ‘static constexpr _Up* std::__copy_move::__copy_m(_Tp*, _Tp*, _Up*) [with _Tp = unsigned char; _Up = unsigned char; bool _IsMove = false]’, inlined from ‘constexpr _OI std::__copy_move_a2(_II, _II, _OI) [with bool _IsMove = false; _II = unsigned char*; _OI = unsigned char*]’ at /opt/gcc-13.2.0/include/c++/13.2.0/bits/stl_algobase.h:506:30, inlined from ‘constexpr _OI std::__copy_move_a1(_II, _II, _OI) [with bool _IsMove = false; _II = unsigned char*; _OI = unsigned char*]’ at /opt/gcc-13.2.0/include/c++/13.2.0/bits/stl_algobase.h:533:42, inlined from ‘constexpr _OI std::__copy_move_a(_II, _II, _OI) [with bool _IsMove = false; _II = __gnu_cxx::__normal_iterator; _OI = unsigned char*]’ at /opt/gcc-13.2.0/include/c++/13.2.0/bits/stl_algobase.h:540:31, inlined from ‘constexpr _OI std::copy(_II, _II, _OI) [with _II = __gnu_cxx::__normal_iterator; _OI = unsigned char*]’ at /opt/gcc-13.2.0/include/c++/13.2.0/bits/stl_algobase.h:633:7, inlined from ‘void bpftime::setup_syscall_tracer()’ at /home/ahmad/Programs/bpftime/attach/text_segment_transformer/text_segment_transformer.cpp:235:11: /opt/gcc-13.2.0/include/c++/13.2.0/bits/stl_algobase.h:437:30: warning: ‘void* __builtin_memmove(void*, const void*, long unsigned int)’ writing between 2 and 9223372036854775807 bytes into a region of size 0 overflows the destination [-Wstringop-overflow=] 437 | __builtin_memmove(__result, __first, sizeof(_Tp) * _Num); | ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In function ‘void bpftime::setup_syscall_tracer()’: cc1plus: note: destination object is likely at address zero COLLECT_GCC_OPTIONS='-v' '-D' 'BPFTIME_BUILD_WITH_LIBBPF=1' '-D' 'SPDLOG_COMPILED_LIB' '-D' 'bpftime_text_segment_transformer_EXPORTS' '-I' '/home/ahmad/Programs/bpftime/build/build/FridaGum-prefix/src/FridaGum' '-I' '/home/ahmad/Programs/bpftime/third_party/spdlog/include' '-fno-omit-frame-pointer' '-O3' '-D' 'NDEBUG' '-std=gnu++20' '-fPIC' '-o' 'text_segment_transformer.cpp.o' '-c' '-shared-libgcc' '-mtune=generic' '-march=x86-64' as -v -I /home/ahmad/Programs/bpftime/build/build/FridaGum-prefix/src/FridaGum -I /home/ahmad/Programs/bpftime/third_party/spdlog/include --64 -o text_segment_transformer.cpp.o /tmp/ccIXuruA.s GNU assembler version 2.30 (x86_64-linux-gnu) using BFD version (GNU Binutils for Ubuntu) 2.30 COMPILER_PATH=/opt/gcc-13.2.0/libexec/gcc/x86_64-linux-gnu/13.2.0/:/opt/gcc-13.2.0/libexec/gcc/x86_64-linux-gnu/13.2.0/:/opt/gcc-13.2.0/libexec/gcc/x86_64-linux-gnu/:/opt/gcc-13.2.0/lib/gcc/x86_64-linux-gnu/13.2.0/:/opt/gcc-13.2.0/lib/gcc/x86_64-linux-gnu/ LIBRARY_PATH=/opt/gcc-13.2.0/lib/gcc/x86_64-linux-gnu/13.2.0/:/opt/gcc-13.2.0/lib/gcc/x86_64-linux-gnu/13.2.0/../../../../lib64/:/lib/x86_64-linux-gnu/:/lib/../lib64/:/usr/lib/x86_64-linux-gnu/:/opt/gcc-13.2.0/lib/gcc/x86_64-linux-gnu/13.2.0/../../../:/lib/:/usr/lib/ COLLECT_GCC_OPTIONS='-v' '-D' 'BPFTIME_BUILD_WITH_LIBBPF=1' '-D' 'SPDLOG_COMPILED_LIB' '-D' 'bpftime_text_segment_transformer_EXPORTS' '-I' '/home/ahmad/Programs/bpftime/build/build/FridaGum-prefix/src/FridaGum' '-I' '/home/ahmad/Programs/bpftime/third_party/spdlog/include' '-fno-omit-frame-pointer' '-O3' '-D' 'NDEBUG' '-std=gnu++20' '-fPIC' '-o' 'text_segment_transformer.cpp.o' '-c' '-shared-libgcc' '-mtune=generic' '-march=x86-64' '-dumpdir' 'text_segment_transformer.cpp.' [/code] Но на этот раз тип перемещения для syscall_hooker_cxx — [code]R_X86_64_PC32. В чем может быть [b]причина[/b] этого [b]несоответствия[/b]? [b]Последний[/b] GCC[/code] настроен [b]неправильно[/b] (также версия GLIBC по умолчанию , используемая [b]первым [/b] GCC — 2,39, а для [b]последнего[/b] — 2,27)? [b]Любые[/b] подсказки приветствуются.
[b]ОБНОВЛЕНИЕ:[/b] Даже [b]стандартный[/b] GCC в Ubuntu-18.04 ([code]GCC 7.5.0[/code]с опцией -std=gnu++20 [b]удален[/b]) создает [b]неперемещаемый[/b] символ (т. е. R_X86_64_PC32)! Поэтому [b]неправильная[/b] конфигурация кажется [b]маловероятной[/b].
[b]UPDATE2:[/b]< /p> Я сгенерировал файлы [b]сборки[/b]. [b]Соответствующая[/b] часть кода (attach/text_segment_transformer.cpp:83) выглядит следующим образом: [code]"call syscall_hooker_cxx\n\t" [/code] Дизассемблирование одинаковое в [b]обаих[/b] сценариях ([code]Ubuntu-18.04[/code] и Ubuntu-24.04): [code]call syscall_hooker_cxx [/code] Но, как уже говорилось выше, окончательные перемещения имеют [b]разные[/b] типы. Таким образом, [b]ассемблеры[/b] работают [b]по-другому[/b]. [b]Почему[/b] это происходит? [b]ОБРАТИТЕ ВНИМАНИЕ[/b], clang использует callq, что приводит к перемещению символов в оба сценария: [code]callq syscall_hooker_cxx [/code]
В Ubuntu 24.04, используя компилятор GCC-13.2 по умолчанию, я скомпилировал
исходный файл с опцией -fPIC для создания перемещаемого двоичный:
/usr/bin/c++ -v -DBPFTIME_BUILD_WITH_LIBBPF=1 -DSPDLOG_COMPILED_LIB...
В Ubuntu 24.04, используя компилятор GCC-13.2 по умолчанию, я скомпилировал
исходный файл с опцией -fPIC для создания перемещаемого двоичный:
/usr/bin/c++ -v -DBPFTIME_BUILD_WITH_LIBBPF=1 -DSPDLOG_COMPILED_LIB...
Я создал оболочку, которую можно компоновать вокруг обычного OutlinedTextField M3, вот так:
@Composable
fun FormTextField(
value: TextFieldValue,
onValueChange: (TextFieldValue) -> Unit,
modifier: Modifier = Modifier,
labelTxt: String,...
Мобильная версия