forked from OSchip/llvm-project
138 lines
3.8 KiB
C++
138 lines
3.8 KiB
C++
//===-- asan_win.cc -------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file is a part of AddressSanitizer, an address sanity checker.
|
|
//
|
|
// Windows-specific details.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "sanitizer_common/sanitizer_platform.h"
|
|
#if SANITIZER_WINDOWS
|
|
#include <windows.h>
|
|
|
|
#include <dbghelp.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "asan_interceptors.h"
|
|
#include "asan_internal.h"
|
|
#include "asan_thread.h"
|
|
#include "sanitizer_common/sanitizer_libc.h"
|
|
#include "sanitizer_common/sanitizer_mutex.h"
|
|
|
|
namespace __asan {
|
|
|
|
// ---------------------- Stacktraces, symbols, etc. ---------------- {{{1
|
|
static BlockingMutex dbghelp_lock(LINKER_INITIALIZED);
|
|
static bool dbghelp_initialized = false;
|
|
#pragma comment(lib, "dbghelp.lib")
|
|
|
|
// ---------------------- TSD ---------------- {{{1
|
|
static bool tsd_key_inited = false;
|
|
|
|
static __declspec(thread) void *fake_tsd = 0;
|
|
|
|
void AsanTSDInit(void (*destructor)(void *tsd)) {
|
|
// FIXME: we're ignoring the destructor for now.
|
|
tsd_key_inited = true;
|
|
}
|
|
|
|
void *AsanTSDGet() {
|
|
CHECK(tsd_key_inited);
|
|
return fake_tsd;
|
|
}
|
|
|
|
void AsanTSDSet(void *tsd) {
|
|
CHECK(tsd_key_inited);
|
|
fake_tsd = tsd;
|
|
}
|
|
|
|
// ---------------------- Various stuff ---------------- {{{1
|
|
void MaybeReexec() {
|
|
// No need to re-exec on Windows.
|
|
}
|
|
|
|
void *AsanDoesNotSupportStaticLinkage() {
|
|
#if defined(_DEBUG)
|
|
#error Please build the runtime with a non-debug CRT: /MD or /MT
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
void SetAlternateSignalStack() {
|
|
// FIXME: Decide what to do on Windows.
|
|
}
|
|
|
|
void UnsetAlternateSignalStack() {
|
|
// FIXME: Decide what to do on Windows.
|
|
}
|
|
|
|
void InstallSignalHandlers() {
|
|
// FIXME: Decide what to do on Windows.
|
|
}
|
|
|
|
void AsanPlatformThreadInit() {
|
|
// Nothing here for now.
|
|
}
|
|
|
|
void ReadContextStack(void *context, uptr *stack, uptr *ssize) {
|
|
UNIMPLEMENTED();
|
|
}
|
|
|
|
} // namespace __asan
|
|
|
|
// ---------------------- Interface ---------------- {{{1
|
|
using namespace __asan; // NOLINT
|
|
|
|
extern "C" {
|
|
SANITIZER_INTERFACE_ATTRIBUTE NOINLINE
|
|
bool __asan_symbolize(const void *addr, char *out_buffer, int buffer_size) {
|
|
BlockingMutexLock lock(&dbghelp_lock);
|
|
if (!dbghelp_initialized) {
|
|
SymSetOptions(SYMOPT_DEFERRED_LOADS |
|
|
SYMOPT_UNDNAME |
|
|
SYMOPT_LOAD_LINES);
|
|
CHECK(SymInitialize(GetCurrentProcess(), 0, TRUE));
|
|
// FIXME: We don't call SymCleanup() on exit yet - should we?
|
|
dbghelp_initialized = true;
|
|
}
|
|
|
|
// See http://msdn.microsoft.com/en-us/library/ms680578(VS.85).aspx
|
|
char buffer[sizeof(SYMBOL_INFO) + MAX_SYM_NAME * sizeof(CHAR)];
|
|
PSYMBOL_INFO symbol = (PSYMBOL_INFO)buffer;
|
|
symbol->SizeOfStruct = sizeof(SYMBOL_INFO);
|
|
symbol->MaxNameLen = MAX_SYM_NAME;
|
|
DWORD64 offset = 0;
|
|
BOOL got_objname = SymFromAddr(GetCurrentProcess(),
|
|
(DWORD64)addr, &offset, symbol);
|
|
if (!got_objname)
|
|
return false;
|
|
|
|
DWORD unused;
|
|
IMAGEHLP_LINE64 info;
|
|
info.SizeOfStruct = sizeof(IMAGEHLP_LINE64);
|
|
BOOL got_fileline = SymGetLineFromAddr64(GetCurrentProcess(),
|
|
(DWORD64)addr, &unused, &info);
|
|
int written = 0;
|
|
out_buffer[0] = '\0';
|
|
// FIXME: it might be useful to print out 'obj' or 'obj+offset' info too.
|
|
if (got_fileline) {
|
|
written += internal_snprintf(out_buffer + written, buffer_size - written,
|
|
" %s %s:%d", symbol->Name,
|
|
info.FileName, info.LineNumber);
|
|
} else {
|
|
written += internal_snprintf(out_buffer + written, buffer_size - written,
|
|
" %s+0x%p", symbol->Name, offset);
|
|
}
|
|
return true;
|
|
}
|
|
} // extern "C"
|
|
|
|
|
|
#endif // _WIN32
|