1 files changed, 294 insertions, 0 deletions
diff --git a/gcc-4.8.3/libsanitizer/sanitizer_common/sanitizer_win.cc b/gcc-4.8.3/libsanitizer/sanitizer_common/sanitizer_win.cc
new file mode 100644
index 000000000..695265594
--- /dev/null
+++ b/gcc-4.8.3/libsanitizer/sanitizer_common/sanitizer_win.cc
@@ -0,0 +1,294 @@
+//===-- sanitizer_win.cc --------------------------------------------------===//
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is shared between AddressSanitizer and ThreadSanitizer
+// run-time libraries and implements windows-specific functions from
+// sanitizer_libc.h.
+//===----------------------------------------------------------------------===//
+#ifdef _WIN32
+#define WIN32_LEAN_AND_MEAN
+#define NOGDI
+#include <stdlib.h>
+#include <io.h>
+#include <windows.h>
+
+#include "sanitizer_common.h"
+#include "sanitizer_libc.h"
+#include "sanitizer_placement_new.h"
+#include "sanitizer_mutex.h"
+
+namespace __sanitizer {
+
+// --------------------- sanitizer_common.h
+uptr GetPageSize() {
+  return 1U << 14;  // FIXME: is this configurable?
+}
+
+uptr GetMmapGranularity() {
+  return 1U << 16;  // FIXME: is this configurable?
+}
+
+bool FileExists(const char *filename) {
+  UNIMPLEMENTED();
+}
+
+int GetPid() {
+  return GetProcessId(GetCurrentProcess());
+}
+
+uptr GetThreadSelf() {
+  return GetCurrentThreadId();
+}
+
+void GetThreadStackTopAndBottom(bool at_initialization, uptr *stack_top,
+                                uptr *stack_bottom) {
+  CHECK(stack_top);
+  CHECK(stack_bottom);
+  MEMORY_BASIC_INFORMATION mbi;
+  CHECK_NE(VirtualQuery(&mbi /* on stack */, &mbi, sizeof(mbi)), 0);
+  // FIXME: is it possible for the stack to not be a single allocation?
+  // Are these values what ASan expects to get (reserved, not committed;
+  // including stack guard page) ?
+  *stack_top = (uptr)mbi.BaseAddress + mbi.RegionSize;
+  *stack_bottom = (uptr)mbi.AllocationBase;
+}
+
+void *MmapOrDie(uptr size, const char *mem_type) {
+  void *rv = VirtualAlloc(0, size, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
+  if (rv == 0) {
+    Report("ERROR: Failed to allocate 0x%zx (%zd) bytes of %s\n",
+           size, size, mem_type);
+    CHECK("unable to mmap" && 0);
+  }
+  return rv;
+}
+
+void UnmapOrDie(void *addr, uptr size) {
+  if (VirtualFree(addr, size, MEM_DECOMMIT) == 0) {
+    Report("ERROR: Failed to deallocate 0x%zx (%zd) bytes at address %p\n",
+           size, size, addr);
+    CHECK("unable to unmap" && 0);
+  }
+}
+
+void *MmapFixedNoReserve(uptr fixed_addr, uptr size) {
+  // FIXME: is this really "NoReserve"? On Win32 this does not matter much,
+  // but on Win64 it does.
+  void *p = VirtualAlloc((LPVOID)fixed_addr, size,
+      MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
+  if (p == 0)
+    Report("ERROR: Failed to allocate 0x%zx (%zd) bytes at %p (%d)\n",
+           size, size, fixed_addr, GetLastError());
+  return p;
+}
+
+void *MmapFixedOrDie(uptr fixed_addr, uptr size) {
+  return MmapFixedNoReserve(fixed_addr, size);
+}
+
+void *Mprotect(uptr fixed_addr, uptr size) {
+  return VirtualAlloc((LPVOID)fixed_addr, size,
+                      MEM_RESERVE | MEM_COMMIT, PAGE_NOACCESS);
+}
+
+void FlushUnneededShadowMemory(uptr addr, uptr size) {
+  // This is almost useless on 32-bits.
+  // FIXME: add madvice-analog when we move to 64-bits.
+}
+
+bool MemoryRangeIsAvailable(uptr range_start, uptr range_end) {
+  // FIXME: shall we do anything here on Windows?
+  return true;
+}
+
+void *MapFileToMemory(const char *file_name, uptr *buff_size) {
+  UNIMPLEMENTED();
+}
+
+const char *GetEnv(const char *name) {
+  static char env_buffer[32767] = {};
+
+  // Note: this implementation stores the result in a static buffer so we only
+  // allow it to be called just once.
+  static bool called_once = false;
+  if (called_once)
+    UNIMPLEMENTED();
+  called_once = true;
+
+  DWORD rv = GetEnvironmentVariableA(name, env_buffer, sizeof(env_buffer));
+  if (rv > 0 && rv < sizeof(env_buffer))
+    return env_buffer;
+  return 0;
+}
+
+const char *GetPwd() {
+  UNIMPLEMENTED();
+}
+
+u32 GetUid() {
+  UNIMPLEMENTED();
+}
+
+void DumpProcessMap() {
+  UNIMPLEMENTED();
+}
+
+void DisableCoreDumper() {
+  UNIMPLEMENTED();
+}
+
+void ReExec() {
+  UNIMPLEMENTED();
+}
+
+void PrepareForSandboxing() {
+  // Nothing here for now.
+}
+
+bool StackSizeIsUnlimited() {
+  UNIMPLEMENTED();
+}
+
+void SetStackSizeLimitInBytes(uptr limit) {
+  UNIMPLEMENTED();
+}
+
+void SleepForSeconds(int seconds) {
+  Sleep(seconds * 1000);
+}
+
+void SleepForMillis(int millis) {
+  Sleep(millis);
+}
+
+void Abort() {
+  abort();
+  _exit(-1);  // abort is not NORETURN on Windows.
+}
+
+#ifndef SANITIZER_GO
+int Atexit(void (*function)(void)) {
+  return atexit(function);
+}
+#endif
+
+// ------------------ sanitizer_libc.h
+void *internal_mmap(void *addr, uptr length, int prot, int flags,
+                    int fd, u64 offset) {
+  UNIMPLEMENTED();
+}
+
+int internal_munmap(void *addr, uptr length) {
+  UNIMPLEMENTED();
+}
+
+int internal_close(fd_t fd) {
+  UNIMPLEMENTED();
+}
+
+int internal_isatty(fd_t fd) {
+  return _isatty(fd);
+}
+
+fd_t internal_open(const char *filename, int flags) {
+  UNIMPLEMENTED();
+}
+
+fd_t internal_open(const char *filename, int flags, u32 mode) {
+  UNIMPLEMENTED();
+}
+
+fd_t OpenFile(const char *filename, bool write) {
+  UNIMPLEMENTED();
+}
+
+uptr internal_read(fd_t fd, void *buf, uptr count) {
+  UNIMPLEMENTED();
+}
+
+uptr internal_write(fd_t fd, const void *buf, uptr count) {
+  if (fd != kStderrFd)
+    UNIMPLEMENTED();
+  HANDLE err = GetStdHandle(STD_ERROR_HANDLE);
+  if (err == 0)
+    return 0;  // FIXME: this might not work on some apps.
+  DWORD ret;
+  if (!WriteFile(err, buf, count, &ret, 0))
+    return 0;
+  return ret;
+}
+
+int internal_stat(const char *path, void *buf) {
+  UNIMPLEMENTED();
+}
+
+int internal_lstat(const char *path, void *buf) {
+  UNIMPLEMENTED();
+}
+
+int internal_fstat(fd_t fd, void *buf) {
+  UNIMPLEMENTED();
+}
+
+uptr internal_filesize(fd_t fd) {
+  UNIMPLEMENTED();
+}
+
+int internal_dup2(int oldfd, int newfd) {
+  UNIMPLEMENTED();
+}
+
+uptr internal_readlink(const char *path, char *buf, uptr bufsize) {
+  UNIMPLEMENTED();
+}
+
+int internal_sched_yield() {
+  Sleep(0);
+  return 0;
+}
+
+void internal__exit(int exitcode) {
+  _exit(exitcode);
+}
+
+// ---------------------- BlockingMutex ---------------- {{{1
+const uptr LOCK_UNINITIALIZED = 0;
+const uptr LOCK_READY = (uptr)-1;
+
+BlockingMutex::BlockingMutex(LinkerInitialized li) {
+  // FIXME: see comments in BlockingMutex::Lock() for the details.
+  CHECK(li == LINKER_INITIALIZED || owner_ == LOCK_UNINITIALIZED);
+
+  CHECK(sizeof(CRITICAL_SECTION) <= sizeof(opaque_storage_));
+  InitializeCriticalSection((LPCRITICAL_SECTION)opaque_storage_);
+  owner_ = LOCK_READY;
+}
+
+void BlockingMutex::Lock() {
+  if (owner_ == LOCK_UNINITIALIZED) {
+    // FIXME: hm, global BlockingMutex objects are not initialized?!?
+    // This might be a side effect of the clang+cl+link Frankenbuild...
+    new(this) BlockingMutex((LinkerInitialized)(LINKER_INITIALIZED + 1));
+
+    // FIXME: If it turns out the linker doesn't invoke our
+    // constructors, we should probably manually Lock/Unlock all the global
+    // locks while we're starting in one thread to avoid double-init races.
+  }
+  EnterCriticalSection((LPCRITICAL_SECTION)opaque_storage_);
+  CHECK_EQ(owner_, LOCK_READY);
+  owner_ = GetThreadSelf();
+}
+
+void BlockingMutex::Unlock() {
+  CHECK_EQ(owner_, GetThreadSelf());
+  owner_ = LOCK_READY;
+  LeaveCriticalSection((LPCRITICAL_SECTION)opaque_storage_);
+}
+
+}  // namespace __sanitizer
+
+#endif  // _WIN32