53a81d4d26
This reapplies 8fa66c6ca7 ([asan][windows]
Eliminate the static asan runtime on windows) for a second time.
That PR bounced off the tests because it caused failures in the other
sanitizer runtimes, these have been fixed by only building interception,
sanitizer_common, and asan with /MD, and continuing to build the rest of
the runtimes with /MT. This does mean that any usage of the static
ubsan/fuzzer/etc runtimes will mean you're mixing different runtime
library linkages in the same app, the interception, sanitizer_common,
and asan runtimes are designed for this, however it does result in some
linker warnings.
Additionally, it turns out when building in release-mode with
LLVM_ENABLE_PDBs the build system forced /OPT:ICF. This totally breaks
asan's "new" method of doing "weak" functions on windows, and so
/OPT:NOICF was explicitly added to asan's link flags.
---------
Co-authored-by: Amy Wishnousky <amyw@microsoft.com>
111 lines
4.3 KiB
C++
111 lines
4.3 KiB
C++
//===-- asan_win_static_runtime_thunk.cpp ---------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of AddressSanitizer, an address sanity checker.
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//
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// This file defines a family of thunks that should be statically linked into
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// modules that are statically linked with the C Runtime in order to delegate
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// the calls to the ASAN runtime DLL.
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// See https://github.com/google/sanitizers/issues/209 for the details.
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//===----------------------------------------------------------------------===//
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#ifdef SANITIZER_STATIC_RUNTIME_THUNK
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# include "asan_init_version.h"
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# include "asan_interface_internal.h"
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# include "asan_win_common_runtime_thunk.h"
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# include "sanitizer_common/sanitizer_platform_interceptors.h"
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# include "sanitizer_common/sanitizer_win_defs.h"
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# include "sanitizer_common/sanitizer_win_thunk_interception.h"
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# if defined(_MSC_VER) && !defined(__clang__)
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// Disable warnings such as: 'void memchr(void)': incorrect number of arguments
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// for intrinsic function, expected '3' arguments.
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# pragma warning(push)
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# pragma warning(disable : 4392)
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# endif
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# define INTERCEPT_LIBRARY_FUNCTION_ASAN(X) \
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INTERCEPT_LIBRARY_FUNCTION(X, "__asan_wrap_" #X)
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INTERCEPT_LIBRARY_FUNCTION_ASAN(atoi);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(atol);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(atoll);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(frexp);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(longjmp);
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# if SANITIZER_INTERCEPT_MEMCHR
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INTERCEPT_LIBRARY_FUNCTION_ASAN(memchr);
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# endif
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INTERCEPT_LIBRARY_FUNCTION_ASAN(memcmp);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(memcpy);
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# ifndef _WIN64
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// memmove and memcpy share an implementation on amd64
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INTERCEPT_LIBRARY_FUNCTION_ASAN(memmove);
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# endif
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INTERCEPT_LIBRARY_FUNCTION_ASAN(memset);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(strcat);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(strchr);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(strcmp);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(strcpy);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(strcspn);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(_strdup);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(strlen);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(strncat);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(strncmp);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(strncpy);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(strnlen);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(strpbrk);
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// INTERCEPT_LIBRARY_FUNCTION_ASAN(strrchr);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(strspn);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(strstr);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(strtok);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(strtol);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(wcslen);
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INTERCEPT_LIBRARY_FUNCTION_ASAN(wcsnlen);
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# if defined(_MSC_VER) && !defined(__clang__)
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# pragma warning(pop)
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# endif
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# ifdef _WIN64
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INTERCEPT_LIBRARY_FUNCTION_ASAN(__C_specific_handler);
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# else
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extern "C" void abort();
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INTERCEPT_LIBRARY_FUNCTION_ASAN(_except_handler3);
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// _except_handler4 checks -GS cookie which is different for each module, so we
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// can't use INTERCEPT_LIBRARY_FUNCTION_ASAN(_except_handler4), need to apply
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// manually
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extern "C" int _except_handler4(void *, void *, void *, void *);
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static int (*real_except_handler4)(void *, void *, void *,
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void *) = &_except_handler4;
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static int intercept_except_handler4(void *a, void *b, void *c, void *d) {
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__asan_handle_no_return();
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return real_except_handler4(a, b, c, d);
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}
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# endif
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// Windows specific functions not included in asan_interface.inc.
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// INTERCEPT_WRAP_W_V(__asan_should_detect_stack_use_after_return)
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// INTERCEPT_WRAP_W_V(__asan_get_shadow_memory_dynamic_address)
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// INTERCEPT_WRAP_W_W(__asan_unhandled_exception_filter)
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extern "C" void __asan_initialize_static_thunk() {
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# ifndef _WIN64
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if (real_except_handler4 == &_except_handler4) {
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// Single threaded, no need for synchronization.
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if (!__sanitizer_override_function_by_addr(
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reinterpret_cast<__sanitizer::uptr>(&intercept_except_handler4),
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reinterpret_cast<__sanitizer::uptr>(&_except_handler4),
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reinterpret_cast<__sanitizer::uptr*>(&real_except_handler4))) {
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abort();
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}
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}
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# endif
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}
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#endif // SANITIZER_DLL_THUNK
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