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      1 //===-- asan_win.cc -------------------------------------------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 //
     10 // This file is a part of AddressSanitizer, an address sanity checker.
     11 //
     12 // Windows-specific details.
     13 //===----------------------------------------------------------------------===//
     14 
     15 #include "sanitizer_common/sanitizer_platform.h"
     16 #if SANITIZER_WINDOWS
     17 #include <windows.h>
     18 
     19 #include <dbghelp.h>
     20 #include <stdlib.h>
     21 
     22 #include "asan_interceptors.h"
     23 #include "asan_internal.h"
     24 #include "asan_thread.h"
     25 #include "sanitizer_common/sanitizer_libc.h"
     26 #include "sanitizer_common/sanitizer_mutex.h"
     27 
     28 extern "C" {
     29   SANITIZER_INTERFACE_ATTRIBUTE
     30   int __asan_should_detect_stack_use_after_return() {
     31     __asan_init();
     32     return __asan_option_detect_stack_use_after_return;
     33   }
     34 }
     35 
     36 namespace __asan {
     37 
     38 // ---------------------- TSD ---------------- {{{1
     39 static bool tsd_key_inited = false;
     40 
     41 static __declspec(thread) void *fake_tsd = 0;
     42 
     43 void AsanTSDInit(void (*destructor)(void *tsd)) {
     44   // FIXME: we're ignoring the destructor for now.
     45   tsd_key_inited = true;
     46 }
     47 
     48 void *AsanTSDGet() {
     49   CHECK(tsd_key_inited);
     50   return fake_tsd;
     51 }
     52 
     53 void AsanTSDSet(void *tsd) {
     54   CHECK(tsd_key_inited);
     55   fake_tsd = tsd;
     56 }
     57 
     58 void PlatformTSDDtor(void *tsd) {
     59   AsanThread::TSDDtor(tsd);
     60 }
     61 // ---------------------- Various stuff ---------------- {{{1
     62 void MaybeReexec() {
     63   // No need to re-exec on Windows.
     64 }
     65 
     66 void *AsanDoesNotSupportStaticLinkage() {
     67 #if defined(_DEBUG)
     68 #error Please build the runtime with a non-debug CRT: /MD or /MT
     69 #endif
     70   return 0;
     71 }
     72 
     73 void AsanCheckDynamicRTPrereqs() { UNIMPLEMENTED(); }
     74 
     75 void AsanCheckIncompatibleRT() {}
     76 
     77 void AsanPlatformThreadInit() {
     78   // Nothing here for now.
     79 }
     80 
     81 void ReadContextStack(void *context, uptr *stack, uptr *ssize) {
     82   UNIMPLEMENTED();
     83 }
     84 
     85 void AsanOnSIGSEGV(int, void *siginfo, void *context) {
     86   UNIMPLEMENTED();
     87 }
     88 
     89 }  // namespace __asan
     90 
     91 #endif  // _WIN32
     92