llvm-project/compiler-rt/lib/ubsan/ubsan_win_dynamic_runtime_t...

//===-- ubsan_win_dynamic_runtime_thunk.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 defines things that need to be present in the application modules
// to interact with Ubsan, when it is included in a dll.
//
//===----------------------------------------------------------------------===//
#ifdef SANITIZER_DYNAMIC_RUNTIME_THUNK
#define SANITIZER_IMPORT_INTERFACE 1
#include "sanitizer_common/sanitizer_win_defs.h"
// Define weak alias for all weak functions imported from ubsan.
#define INTERFACE_FUNCTION(Name)
#define INTERFACE_WEAK_FUNCTION(Name) WIN_WEAK_IMPORT_DEF(Name)
#include "ubsan_interface.inc"
#endif // SANITIZER_DYNAMIC_RUNTIME_THUNK
compiler-rt: Rename .cc files in lib/ubsan to .cpp. See https://reviews.llvm.org/D58620 for discussion, and for the commands I ran. In addition I also ran for f in $(svn diff \| diffstat \| grep .cc \| cut -f 2 -d ' '); do rg $f . ; done and manually updated references to renamed files found by that. llvm-svn: 367452 2019-08-01 01:51:05 +08:00			`//===-- ubsan_win_dynamic_runtime_thunk.cpp -------------------------------===//`
[sanitizer] Add dynamic_runtime_thunk for different sanitizers. In Windows, when the sanitizer is implemented as a shared library (DLL), we need an auxiliary static library dynamic_runtime_thunk that will be linked to the main executable and dlls. In the sanitizer DLL, we are exposing weak functions with WIN_WEAK_EXPORT_DEF(), which exports the default implementation with __dll suffix. For example: for sanitizer coverage, the default implementation of __sanitizer_cov_trace_cmp is exported as: __sanitizer_cov_trace_cmp__dll. In the dynamic_runtime_thunk static library, we include weak aliases to the imported implementation from the dll, using the macro WIN_WEAK_IMPORT_DEF(). By default, all users's programs that include calls to weak functions like __sanitizer_cov_trace_cmp, will be redirected to the implementation in the dll, when linking to dynamic_runtime_thunk. After this diff, we are able to compile code with sanitizer coverage instrumentation on Windows. When the instrumented object files are linked with clang-rt_asan_dynamic_runtime_thunk-arch.lib all the weak symbols will be resolved to the implementation imported from asan dll. All the files sanitizer_dynamic_runtime_thunk.cc are independent, so we do not need to include a specific list of sanitizers. Now, we compile: [asan\|ubsan\|sanitizer_coverage]_win_dynamic_runtime_thunk.cc and sanitizer_win_dynamic_runtime_thunk.cc to generate asan_dynamic_runtime_thunk.lib, because we include asan, ubsan and sanitizer coverage in the address sanitizer library. Differential Revision: https://reviews.llvm.org/D29158 llvm-svn: 293953 2017-02-03 07:01:41 +08:00			`//`
Update the file headers across all of the LLVM projects in the monorepo to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636 2019-01-19 16:50:56 +08:00			`// 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`
[sanitizer] Add dynamic_runtime_thunk for different sanitizers. In Windows, when the sanitizer is implemented as a shared library (DLL), we need an auxiliary static library dynamic_runtime_thunk that will be linked to the main executable and dlls. In the sanitizer DLL, we are exposing weak functions with WIN_WEAK_EXPORT_DEF(), which exports the default implementation with __dll suffix. For example: for sanitizer coverage, the default implementation of __sanitizer_cov_trace_cmp is exported as: __sanitizer_cov_trace_cmp__dll. In the dynamic_runtime_thunk static library, we include weak aliases to the imported implementation from the dll, using the macro WIN_WEAK_IMPORT_DEF(). By default, all users's programs that include calls to weak functions like __sanitizer_cov_trace_cmp, will be redirected to the implementation in the dll, when linking to dynamic_runtime_thunk. After this diff, we are able to compile code with sanitizer coverage instrumentation on Windows. When the instrumented object files are linked with clang-rt_asan_dynamic_runtime_thunk-arch.lib all the weak symbols will be resolved to the implementation imported from asan dll. All the files sanitizer_dynamic_runtime_thunk.cc are independent, so we do not need to include a specific list of sanitizers. Now, we compile: [asan\|ubsan\|sanitizer_coverage]_win_dynamic_runtime_thunk.cc and sanitizer_win_dynamic_runtime_thunk.cc to generate asan_dynamic_runtime_thunk.lib, because we include asan, ubsan and sanitizer coverage in the address sanitizer library. Differential Revision: https://reviews.llvm.org/D29158 llvm-svn: 293953 2017-02-03 07:01:41 +08:00			`//`
			`//===----------------------------------------------------------------------===//`
			`//`
			`// This file defines things that need to be present in the application modules`
			`// to interact with Ubsan, when it is included in a dll.`
			`//`
			`//===----------------------------------------------------------------------===//`
			`#ifdef SANITIZER_DYNAMIC_RUNTIME_THUNK`
			`#define SANITIZER_IMPORT_INTERFACE 1`
			`#include "sanitizer_common/sanitizer_win_defs.h"`
			`// Define weak alias for all weak functions imported from ubsan.`
			`#define INTERFACE_FUNCTION(Name)`
			`#define INTERFACE_WEAK_FUNCTION(Name) WIN_WEAK_IMPORT_DEF(Name)`
			`#include "ubsan_interface.inc"`
			`#endif // SANITIZER_DYNAMIC_RUNTIME_THUNK`