head 1.1; branch 1.1.1; access; symbols perseant-exfatfs-base-20261102:1.1.1.2 netbsd-11-1-RELEASE:1.1.1.1 gcc-14-4-0:1.1.1.2 netbsd-11-0-RELEASE:1.1.1.1 netbsd-11-0-RC7:1.1.1.1 netbsd-11-0-RC6:1.1.1.1 netbsd-11-0-RC5:1.1.1.1 netbsd-11-0-RC4:1.1.1.1 netbsd-11-0-RC3:1.1.1.1 netbsd-11-0-RC2:1.1.1.1 netbsd-11-0-RC1:1.1.1.1 gcc-14-3-0:1.1.1.2 perseant-exfatfs-base-20250801:1.1.1.1 netbsd-11:1.1.1.1.0.4 netbsd-11-base:1.1.1.1 gcc-12-5-0:1.1.1.1 perseant-exfatfs-base-20240630:1.1.1.1 gcc-12-4-0:1.1.1.1 perseant-exfatfs:1.1.1.1.0.2 perseant-exfatfs-base:1.1.1.1 gcc-12-3-0:1.1.1.1 FSF:1.1.1; locks; strict; comment @// @; 1.1 date 2023.07.30.05.20.41; author mrg; state Exp; branches 1.1.1.1; next ; commitid tk6nV4mbc9nVEMyE; 1.1.1.1 date 2023.07.30.05.20.41; author mrg; state Exp; branches 1.1.1.1.2.1; next 1.1.1.2; commitid tk6nV4mbc9nVEMyE; 1.1.1.2 date 2025.09.13.23.45.04; author mrg; state Exp; branches; next ; commitid KwhwN4krNWa6XBaG; 1.1.1.1.2.1 date 2026.11.04.22.51.18; author perseant; state Exp; branches; next ; commitid 3QTNojfCEH9lUb2H; desc @@ 1.1 log @Initial revision @ text @//===-- hwasan_allocation_functions.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 HWAddressSanitizer. // // Definitions for __sanitizer allocation functions. // //===----------------------------------------------------------------------===// #include "hwasan.h" #include "interception/interception.h" #include "sanitizer_common/sanitizer_allocator_dlsym.h" #include "sanitizer_common/sanitizer_allocator_interface.h" #include "sanitizer_common/sanitizer_tls_get_addr.h" #if !SANITIZER_FUCHSIA using namespace __hwasan; struct DlsymAlloc : public DlSymAllocator { static bool UseImpl() { return !hwasan_inited; } }; extern "C" { SANITIZER_INTERFACE_ATTRIBUTE int __sanitizer_posix_memalign(void **memptr, uptr alignment, uptr size) { GET_MALLOC_STACK_TRACE; CHECK_NE(memptr, 0); int res = hwasan_posix_memalign(memptr, alignment, size, &stack); return res; } SANITIZER_INTERFACE_ATTRIBUTE void *__sanitizer_memalign(uptr alignment, uptr size) { GET_MALLOC_STACK_TRACE; return hwasan_memalign(alignment, size, &stack); } SANITIZER_INTERFACE_ATTRIBUTE void *__sanitizer_aligned_alloc(uptr alignment, uptr size) { GET_MALLOC_STACK_TRACE; return hwasan_aligned_alloc(alignment, size, &stack); } SANITIZER_INTERFACE_ATTRIBUTE void *__sanitizer___libc_memalign(uptr alignment, uptr size) { GET_MALLOC_STACK_TRACE; void *ptr = hwasan_memalign(alignment, size, &stack); if (ptr) DTLS_on_libc_memalign(ptr, size); return ptr; } SANITIZER_INTERFACE_ATTRIBUTE void *__sanitizer_valloc(uptr size) { GET_MALLOC_STACK_TRACE; return hwasan_valloc(size, &stack); } SANITIZER_INTERFACE_ATTRIBUTE void *__sanitizer_pvalloc(uptr size) { GET_MALLOC_STACK_TRACE; return hwasan_pvalloc(size, &stack); } SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_free(void *ptr) { if (!ptr) return; if (DlsymAlloc::PointerIsMine(ptr)) return DlsymAlloc::Free(ptr); GET_MALLOC_STACK_TRACE; hwasan_free(ptr, &stack); } SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_cfree(void *ptr) { if (!ptr) return; if (DlsymAlloc::PointerIsMine(ptr)) return DlsymAlloc::Free(ptr); GET_MALLOC_STACK_TRACE; hwasan_free(ptr, &stack); } SANITIZER_INTERFACE_ATTRIBUTE uptr __sanitizer_malloc_usable_size(const void *ptr) { return __sanitizer_get_allocated_size(ptr); } SANITIZER_INTERFACE_ATTRIBUTE struct __sanitizer_struct_mallinfo __sanitizer_mallinfo() { __sanitizer_struct_mallinfo sret; internal_memset(&sret, 0, sizeof(sret)); return sret; } SANITIZER_INTERFACE_ATTRIBUTE int __sanitizer_mallopt(int cmd, int value) { return 0; } SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_malloc_stats(void) { // FIXME: implement, but don't call REAL(malloc_stats)! } SANITIZER_INTERFACE_ATTRIBUTE void *__sanitizer_calloc(uptr nmemb, uptr size) { if (DlsymAlloc::Use()) return DlsymAlloc::Callocate(nmemb, size); GET_MALLOC_STACK_TRACE; return hwasan_calloc(nmemb, size, &stack); } SANITIZER_INTERFACE_ATTRIBUTE void *__sanitizer_realloc(void *ptr, uptr size) { if (DlsymAlloc::Use() || DlsymAlloc::PointerIsMine(ptr)) return DlsymAlloc::Realloc(ptr, size); GET_MALLOC_STACK_TRACE; return hwasan_realloc(ptr, size, &stack); } SANITIZER_INTERFACE_ATTRIBUTE void *__sanitizer_reallocarray(void *ptr, uptr nmemb, uptr size) { GET_MALLOC_STACK_TRACE; return hwasan_reallocarray(ptr, nmemb, size, &stack); } SANITIZER_INTERFACE_ATTRIBUTE void *__sanitizer_malloc(uptr size) { if (UNLIKELY(!hwasan_init_is_running)) ENSURE_HWASAN_INITED(); if (DlsymAlloc::Use()) return DlsymAlloc::Allocate(size); GET_MALLOC_STACK_TRACE; return hwasan_malloc(size, &stack); } } // extern "C" #if HWASAN_WITH_INTERCEPTORS # define INTERCEPTOR_ALIAS(RET, FN, ARGS...) \ extern "C" SANITIZER_INTERFACE_ATTRIBUTE RET WRAP(FN)(ARGS) \ ALIAS("__sanitizer_" #FN); \ extern "C" SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE RET FN( \ ARGS) ALIAS("__sanitizer_" #FN) INTERCEPTOR_ALIAS(int, posix_memalign, void **memptr, SIZE_T alignment, SIZE_T size); INTERCEPTOR_ALIAS(void *, aligned_alloc, SIZE_T alignment, SIZE_T size); INTERCEPTOR_ALIAS(void *, __libc_memalign, SIZE_T alignment, SIZE_T size); INTERCEPTOR_ALIAS(void *, valloc, SIZE_T size); INTERCEPTOR_ALIAS(void, free, void *ptr); INTERCEPTOR_ALIAS(uptr, malloc_usable_size, const void *ptr); INTERCEPTOR_ALIAS(void *, calloc, SIZE_T nmemb, SIZE_T size); INTERCEPTOR_ALIAS(void *, realloc, void *ptr, SIZE_T size); INTERCEPTOR_ALIAS(void *, reallocarray, void *ptr, SIZE_T nmemb, SIZE_T size); INTERCEPTOR_ALIAS(void *, malloc, SIZE_T size); # if !SANITIZER_FREEBSD && !SANITIZER_NETBSD INTERCEPTOR_ALIAS(void *, memalign, SIZE_T alignment, SIZE_T size); INTERCEPTOR_ALIAS(void *, pvalloc, SIZE_T size); INTERCEPTOR_ALIAS(void, cfree, void *ptr); INTERCEPTOR_ALIAS(__sanitizer_struct_mallinfo, mallinfo); INTERCEPTOR_ALIAS(int, mallopt, int cmd, int value); INTERCEPTOR_ALIAS(void, malloc_stats, void); # endif #endif // #if HWASAN_WITH_INTERCEPTORS #endif // SANITIZER_FUCHSIA @ 1.1.1.1 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 @@ 1.1.1.1.2.1 log @Sync with HEAD @ text @a18 1 #include "sanitizer_common/sanitizer_mallinfo.h" d21 2 a26 12 static void OnAllocate(const void *ptr, uptr size) { # if CAN_SANITIZE_LEAKS // Suppress leaks from dlerror(). Previously dlsym hack on global array was // used by leak sanitizer as a root region. __lsan_register_root_region(ptr, size); # endif } static void OnFree(const void *ptr, uptr size) { # if CAN_SANITIZE_LEAKS __lsan_unregister_root_region(ptr, size); # endif } d146 1 a146 7 #if HWASAN_WITH_INTERCEPTORS || SANITIZER_FUCHSIA #if SANITIZER_FUCHSIA // Fuchsia does not use WRAP/wrappers used for the interceptor infrastructure. # define INTERCEPTOR_ALIAS(RET, FN, ARGS...) \ extern "C" SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE RET FN( \ ARGS) ALIAS(__sanitizer_##FN) #else d149 1 a149 1 ALIAS(__sanitizer_##FN); \ d151 1 a151 2 ARGS) ALIAS(__sanitizer_##FN) #endif d174 2 @ 1.1.1.2 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 @a18 1 #include "sanitizer_common/sanitizer_mallinfo.h" d21 2 a26 12 static void OnAllocate(const void *ptr, uptr size) { # if CAN_SANITIZE_LEAKS // Suppress leaks from dlerror(). Previously dlsym hack on global array was // used by leak sanitizer as a root region. __lsan_register_root_region(ptr, size); # endif } static void OnFree(const void *ptr, uptr size) { # if CAN_SANITIZE_LEAKS __lsan_unregister_root_region(ptr, size); # endif } d146 1 a146 7 #if HWASAN_WITH_INTERCEPTORS || SANITIZER_FUCHSIA #if SANITIZER_FUCHSIA // Fuchsia does not use WRAP/wrappers used for the interceptor infrastructure. # define INTERCEPTOR_ALIAS(RET, FN, ARGS...) \ extern "C" SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE RET FN( \ ARGS) ALIAS(__sanitizer_##FN) #else d149 1 a149 1 ALIAS(__sanitizer_##FN); \ d151 1 a151 2 ARGS) ALIAS(__sanitizer_##FN) #endif d174 2 @