head 1.4; access; symbols netbsd-11-0-RC4:1.3 netbsd-11-0-RC3:1.3 netbsd-11-0-RC2:1.3 netbsd-11-0-RC1:1.3 gcc-14-3-0:1.1.1.3 perseant-exfatfs-base-20250801:1.3 netbsd-11:1.3.0.4 netbsd-11-base:1.3 gcc-12-5-0:1.1.1.2 perseant-exfatfs-base-20240630:1.3 gcc-12-4-0:1.1.1.2 perseant-exfatfs:1.3.0.2 perseant-exfatfs-base:1.3 gcc-12-3-0:1.1.1.2 gcc-10-5-0:1.1.1.1 gcc-10-4-0:1.1.1.1 cjep_sun2x:1.2.0.4 cjep_sun2x-base:1.2 cjep_staticlib_x-base1:1.2 cjep_staticlib_x:1.2.0.2 cjep_staticlib_x-base:1.2 gcc-10-3-0:1.1.1.1 FSF:1.1.1; locks; strict; comment @// @; 1.4 date 2025.09.14.00.08.58; author mrg; state Exp; branches; next 1.3; commitid x9D5QEnvbeMI4CaG; 1.3 date 2023.07.31.01.44.57; author mrg; state Exp; branches; next 1.2; commitid q79F5Opf0FLsyTyE; 1.2 date 2021.04.11.23.54.28; author mrg; state dead; branches; next 1.1; commitid wJn7ggfUTEMOWVOC; 1.1 date 2021.04.10.22.09.22; author mrg; state Exp; branches 1.1.1.1; next ; commitid eC4g0MRpqTvEkNOC; 1.1.1.1 date 2021.04.10.22.09.22; author mrg; state Exp; branches; next 1.1.1.2; commitid eC4g0MRpqTvEkNOC; 1.1.1.2 date 2023.07.30.05.20.41; author mrg; state Exp; branches; next 1.1.1.3; commitid tk6nV4mbc9nVEMyE; 1.1.1.3 date 2025.09.13.23.45.04; author mrg; state Exp; branches; next ; commitid KwhwN4krNWa6XBaG; desc @@ 1.4 log @merge GCC 14.3.0. @ text @//===-- tsan_interface.cpp ------------------------------------------------===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // // This file is a part of ThreadSanitizer (TSan), a race detector. // //===----------------------------------------------------------------------===// #include "tsan_interface.h" #include "tsan_interface_ann.h" #include "tsan_rtl.h" #include "sanitizer_common/sanitizer_internal_defs.h" #include "sanitizer_common/sanitizer_ptrauth.h" #define CALLERPC ((uptr)__builtin_return_address(0)) using namespace __tsan; void __tsan_init() { Initialize(cur_thread_init()); } void __tsan_flush_memory() { FlushShadowMemory(); } void __tsan_read16_pc(void *addr, void *pc) { uptr pc_no_pac = STRIP_PAC_PC(pc); ThreadState *thr = cur_thread(); MemoryAccess(thr, pc_no_pac, (uptr)addr, 8, kAccessRead); MemoryAccess(thr, pc_no_pac, (uptr)addr + 8, 8, kAccessRead); } void __tsan_write16_pc(void *addr, void *pc) { uptr pc_no_pac = STRIP_PAC_PC(pc); ThreadState *thr = cur_thread(); MemoryAccess(thr, pc_no_pac, (uptr)addr, 8, kAccessWrite); MemoryAccess(thr, pc_no_pac, (uptr)addr + 8, 8, kAccessWrite); } // __tsan_unaligned_read/write calls are emitted by compiler. void __tsan_unaligned_read16(const void *addr) { uptr pc = CALLERPC; ThreadState *thr = cur_thread(); UnalignedMemoryAccess(thr, pc, (uptr)addr, 8, kAccessRead); UnalignedMemoryAccess(thr, pc, (uptr)addr + 8, 8, kAccessRead); } void __tsan_unaligned_write16(void *addr) { uptr pc = CALLERPC; ThreadState *thr = cur_thread(); UnalignedMemoryAccess(thr, pc, (uptr)addr, 8, kAccessWrite); UnalignedMemoryAccess(thr, pc, (uptr)addr + 8, 8, kAccessWrite); } extern "C" { SANITIZER_INTERFACE_ATTRIBUTE void *__tsan_get_current_fiber() { return cur_thread(); } SANITIZER_INTERFACE_ATTRIBUTE void *__tsan_create_fiber(unsigned flags) { return FiberCreate(cur_thread(), CALLERPC, flags); } SANITIZER_INTERFACE_ATTRIBUTE void __tsan_destroy_fiber(void *fiber) { FiberDestroy(cur_thread(), CALLERPC, static_cast(fiber)); } SANITIZER_INTERFACE_ATTRIBUTE void __tsan_switch_to_fiber(void *fiber, unsigned flags) { FiberSwitch(cur_thread(), CALLERPC, static_cast(fiber), flags); } SANITIZER_INTERFACE_ATTRIBUTE void __tsan_set_fiber_name(void *fiber, const char *name) { ThreadSetName(static_cast(fiber), name); } } // extern "C" void __tsan_acquire(void *addr) { Acquire(cur_thread(), CALLERPC, (uptr)addr); } void __tsan_release(void *addr) { Release(cur_thread(), CALLERPC, (uptr)addr); } @ 1.3 log @make this actually be GCC 12.3.0's libsanitizer. the libsanitizer we used with GCC 9 and GCC 10 was significantly ahead of the GCC 9 and GCC 10 provided versions. @ text @a28 14 void __tsan_read16(void *addr) { uptr pc = CALLERPC; ThreadState *thr = cur_thread(); MemoryAccess(thr, pc, (uptr)addr, 8, kAccessRead); MemoryAccess(thr, pc, (uptr)addr + 8, 8, kAccessRead); } void __tsan_write16(void *addr) { uptr pc = CALLERPC; ThreadState *thr = cur_thread(); MemoryAccess(thr, pc, (uptr)addr, 8, kAccessWrite); MemoryAccess(thr, pc, (uptr)addr + 8, 8, kAccessWrite); } @ 1.2 log @revert sanitizer back to the version we were using with GCC 9, since that one was already newer than the GCC 10 version. @ text @d17 1 d23 1 a23 8 typedef u16 uint16_t; typedef u32 uint32_t; typedef u64 uint64_t; void __tsan_init() { cur_thread_init(); Initialize(cur_thread()); } d30 4 a33 2 MemoryRead(cur_thread(), CALLERPC, (uptr)addr, kSizeLog8); MemoryRead(cur_thread(), CALLERPC, (uptr)addr + 8, kSizeLog8); d37 4 a40 2 MemoryWrite(cur_thread(), CALLERPC, (uptr)addr, kSizeLog8); MemoryWrite(cur_thread(), CALLERPC, (uptr)addr + 8, kSizeLog8); d44 4 a47 2 MemoryRead(cur_thread(), (uptr)pc, (uptr)addr, kSizeLog8); MemoryRead(cur_thread(), (uptr)pc, (uptr)addr + 8, kSizeLog8); d51 4 a54 2 MemoryWrite(cur_thread(), (uptr)pc, (uptr)addr, kSizeLog8); MemoryWrite(cur_thread(), (uptr)pc, (uptr)addr + 8, kSizeLog8); a58 12 void __tsan_unaligned_read2(const void *addr) { UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 2, false, false); } void __tsan_unaligned_read4(const void *addr) { UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 4, false, false); } void __tsan_unaligned_read8(const void *addr) { UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 8, false, false); } d60 4 a63 13 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 16, false, false); } void __tsan_unaligned_write2(void *addr) { UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 2, true, false); } void __tsan_unaligned_write4(void *addr) { UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 4, true, false); } void __tsan_unaligned_write8(void *addr) { UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 8, true, false); d67 4 a70 1 UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 16, true, false); a72 2 // __sanitizer_unaligned_load/store are for user instrumentation. a74 36 u16 __sanitizer_unaligned_load16(const uu16 *addr) { __tsan_unaligned_read2(addr); return *addr; } SANITIZER_INTERFACE_ATTRIBUTE u32 __sanitizer_unaligned_load32(const uu32 *addr) { __tsan_unaligned_read4(addr); return *addr; } SANITIZER_INTERFACE_ATTRIBUTE u64 __sanitizer_unaligned_load64(const uu64 *addr) { __tsan_unaligned_read8(addr); return *addr; } SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_unaligned_store16(uu16 *addr, u16 v) { __tsan_unaligned_write2(addr); *addr = v; } SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_unaligned_store32(uu32 *addr, u32 v) { __tsan_unaligned_write4(addr); *addr = v; } SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_unaligned_store64(uu64 *addr, u64 v) { __tsan_unaligned_write8(addr); *addr = v; } SANITIZER_INTERFACE_ATTRIBUTE @ 1.1 log @Initial revision @ text @@ 1.1.1.1 log @initial import of GCC 10.3.0. main changes include: caveats: - ABI issue between c++14 and c++17 fixed - profile mode is removed from libstdc++ - -fno-common is now the default new features: - new flags -fallocation-dce, -fprofile-partial-training, -fprofile-reproducible, -fprofile-prefix-path, and -fanalyzer - many new compile and link time optimisations - enhanced drive optimisations - openacc 2.6 support - openmp 5.0 features - new warnings: -Wstring-compare and -Wzero-length-bounds - extended warnings: -Warray-bounds, -Wformat-overflow, -Wrestrict, -Wreturn-local-addr, -Wstringop-overflow, -Warith-conversion, -Wmismatched-tags, and -Wredundant-tags - some likely C2X features implemented - more C++20 implemented - many new arm & intel CPUs known hundreds of reported bugs are fixed. full list of changes can be found at: https://gcc.gnu.org/gcc-10/changes.html @ text @@ 1.1.1.2 log @initial import of GCC 12.3.0. major changes in GCC 11 included: - The default mode for C++ is now -std=gnu++17 instead of -std=gnu++14. - When building GCC itself, the host compiler must now support C++11, rather than C++98. - Some short options of the gcov tool have been renamed: -i to -j and -j to -H. - ThreadSanitizer improvements. - Introduce Hardware-assisted AddressSanitizer support. - For targets that produce DWARF debugging information GCC now defaults to DWARF version 5. This can produce up to 25% more compact debug information compared to earlier versions. - Many optimisations. - The existing malloc attribute has been extended so that it can be used to identify allocator/deallocator API pairs. A pair of new -Wmismatched-dealloc and -Wmismatched-new-delete warnings are added. - Other new warnings: -Wsizeof-array-div, enabled by -Wall, warns about divisions of two sizeof operators when the first one is applied to an array and the divisor does not equal the size of the array element. -Wstringop-overread, enabled by default, warns about calls to string functions reading past the end of the arrays passed to them as arguments. -Wtsan, enabled by default, warns about unsupported features in ThreadSanitizer (currently std::atomic_thread_fence). - Enchanced warnings: -Wfree-nonheap-object detects many more instances of calls to deallocation functions with pointers not returned from a dynamic memory allocation function. -Wmaybe-uninitialized diagnoses passing pointers or references to uninitialized memory to functions taking const-qualified arguments. -Wuninitialized detects reads from uninitialized dynamically allocated memory. -Warray-parameter warns about functions with inconsistent array forms. -Wvla-parameter warns about functions with inconsistent VLA forms. - Several new features from the upcoming C2X revision of the ISO C standard are supported with -std=c2x and -std=gnu2x. - Several C++20 features have been implemented. - The C++ front end has experimental support for some of the upcoming C++23 draft. - Several new C++ warnings. - Enhanced Arm, AArch64, x86, and RISC-V CPU support. - The implementation of how program state is tracked within -fanalyzer has been completely rewritten with many enhancements. see https://gcc.gnu.org/gcc-11/changes.html for a full list. major changes in GCC 12 include: - An ABI incompatibility between C and C++ when passing or returning by value certain aggregates containing zero width bit-fields has been discovered on various targets. x86-64, ARM and AArch64 will always ignore them (so there is a C ABI incompatibility between GCC 11 and earlier with GCC 12 or later), PowerPC64 ELFv2 always take them into account (so there is a C++ ABI incompatibility, GCC 4.4 and earlier compatible with GCC 12 or later, incompatible with GCC 4.5 through GCC 11). RISC-V has changed the handling of these already starting with GCC 10. As the ABI requires, MIPS takes them into account handling function return values so there is a C++ ABI incompatibility with GCC 4.5 through 11. - STABS: Support for emitting the STABS debugging format is deprecated and will be removed in the next release. All ports now default to emit DWARF (version 2 or later) debugging info or are obsoleted. - Vectorization is enabled at -O2 which is now equivalent to the original -O2 -ftree-vectorize -fvect-cost-model=very-cheap. - GCC now supports the ShadowCallStack sanitizer. - Support for __builtin_shufflevector compatible with the clang language extension was added. - Support for attribute unavailable was added. - Support for __builtin_dynamic_object_size compatible with the clang language extension was added. - New warnings: -Wbidi-chars warns about potentially misleading UTF-8 bidirectional control characters. -Warray-compare warns about comparisons between two operands of array type. - Some new features from the upcoming C2X revision of the ISO C standard are supported with -std=c2x and -std=gnu2x. - Several C++23 features have been implemented. - Many C++ enhancements across warnings and -f options. see https://gcc.gnu.org/gcc-12/changes.html for a full list. @ text @a16 1 #include "sanitizer_common/sanitizer_ptrauth.h" d22 8 a29 1 void __tsan_init() { Initialize(cur_thread_init()); } d36 2 a37 4 uptr pc = CALLERPC; ThreadState *thr = cur_thread(); MemoryAccess(thr, pc, (uptr)addr, 8, kAccessRead); MemoryAccess(thr, pc, (uptr)addr + 8, 8, kAccessRead); d41 2 a42 4 uptr pc = CALLERPC; ThreadState *thr = cur_thread(); MemoryAccess(thr, pc, (uptr)addr, 8, kAccessWrite); MemoryAccess(thr, pc, (uptr)addr + 8, 8, kAccessWrite); d46 2 a47 4 uptr pc_no_pac = STRIP_PAC_PC(pc); ThreadState *thr = cur_thread(); MemoryAccess(thr, pc_no_pac, (uptr)addr, 8, kAccessRead); MemoryAccess(thr, pc_no_pac, (uptr)addr + 8, 8, kAccessRead); d51 2 a52 4 uptr pc_no_pac = STRIP_PAC_PC(pc); ThreadState *thr = cur_thread(); MemoryAccess(thr, pc_no_pac, (uptr)addr, 8, kAccessWrite); MemoryAccess(thr, pc_no_pac, (uptr)addr + 8, 8, kAccessWrite); d57 12 d70 13 a82 4 uptr pc = CALLERPC; ThreadState *thr = cur_thread(); UnalignedMemoryAccess(thr, pc, (uptr)addr, 8, kAccessRead); UnalignedMemoryAccess(thr, pc, (uptr)addr + 8, 8, kAccessRead); d86 1 a86 4 uptr pc = CALLERPC; ThreadState *thr = cur_thread(); UnalignedMemoryAccess(thr, pc, (uptr)addr, 8, kAccessWrite); UnalignedMemoryAccess(thr, pc, (uptr)addr + 8, 8, kAccessWrite); d89 2 d93 36 @ 1.1.1.3 log @initial import of GCC 14.3.0. major changes in GCC 13: - improved sanitizer - zstd debug info compression - LTO improvements - SARIF based diagnostic support - new warnings: -Wxor-used-as-pow, -Wenum-int-mismatch, -Wself-move, -Wdangling-reference - many new -Wanalyzer* specific warnings - enhanced warnings: -Wpessimizing-move, -Wredundant-move - new attributes to mark file descriptors, c++23 "assume" - several C23 features added - several C++23 features added - many new features for Arm, x86, RISC-V major changes in GCC 14: - more strict C99 or newer support - ia64* marked deprecated (but seemingly still in GCC 15.) - several new hardening features - support for "hardbool", which can have user supplied values of true/false - explicit support for stack scrubbing upon function exit - better auto-vectorisation support - added clang-compatible __has_feature and __has_extension - more C23, including -std=c23 - several C++26 features added - better diagnostics in C++ templates - new warnings: -Wnrvo, Welaborated-enum-base - many new features for Arm, x86, RISC-V - possible ABI breaking change for SPARC64 and small structures with arrays of floats. @ text @d29 14 @