1 files changed, 57 insertions, 4 deletions

diff --git a/libsanitizer/sanitizer_common/sanitizer_win.cc b/libsanitizer/sanitizer_common/sanitizer_win.cc
index 6065838cefe..9f24510dbd0 100644
--- a/libsanitizer/sanitizer_common/sanitizer_win.cc
+++ b/libsanitizer/sanitizer_common/sanitizer_win.cc
@@ -15,9 +15,10 @@
 
 #define WIN32_LEAN_AND_MEAN
 #define NOGDI
-#include <stdlib.h>
-#include <io.h>
 #include <windows.h>
+#include <dbghelp.h>
+#include <io.h>
+#include <stdlib.h>
 
 #include "sanitizer_common.h"
 #include "sanitizer_libc.h"
@@ -62,6 +63,7 @@ uptr GetThreadSelf() {
   return GetTid();
 }
 
+#if !SANITIZER_GO
 void GetThreadStackTopAndBottom(bool at_initialization, uptr *stack_top,
                                 uptr *stack_bottom) {
   CHECK(stack_top);
@@ -74,6 +76,7 @@ void GetThreadStackTopAndBottom(bool at_initialization, uptr *stack_top,
   *stack_top = (uptr)mbi.BaseAddress + mbi.RegionSize;
   *stack_bottom = (uptr)mbi.AllocationBase;
 }
+#endif  // #if !SANITIZER_GO
 
 void *MmapOrDie(uptr size, const char *mem_type) {
   void *rv = VirtualAlloc(0, size, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
@@ -135,6 +138,10 @@ void *MapFileToMemory(const char *file_name, uptr *buff_size) {
   UNIMPLEMENTED();
 }
 
+void *MapWritableFileToMemory(void *addr, uptr size, uptr fd, uptr offset) {
+  UNIMPLEMENTED();
+}
+
 static const int kMaxEnvNameLength = 128;
 static const DWORD kMaxEnvValueLength = 32767;
 
@@ -182,7 +189,7 @@ void DumpProcessMap() {
   UNIMPLEMENTED();
 }
 
-void DisableCoreDumper() {
+void DisableCoreDumperIfNecessary() {
   // Do nothing.
 }
 
@@ -203,6 +210,14 @@ void SetStackSizeLimitInBytes(uptr limit) {
   UNIMPLEMENTED();
 }
 
+bool AddressSpaceIsUnlimited() {
+  UNIMPLEMENTED();
+}
+
+void SetAddressSpaceUnlimited() {
+  UNIMPLEMENTED();
+}
+
 char *FindPathToBinary(const char *name) {
   // Nothing here for now.
   return 0;
@@ -350,6 +365,14 @@ void internal__exit(int exitcode) {
   ExitProcess(exitcode);
 }
 
+uptr internal_ftruncate(fd_t fd, uptr size) {
+  UNIMPLEMENTED();
+}
+
+uptr internal_rename(const char *oldpath, const char *newpath) {
+  UNIMPLEMENTED();
+}
+
 // ---------------------- BlockingMutex ---------------- {{{1
 const uptr LOCK_UNINITIALIZED = 0;
 const uptr LOCK_READY = (uptr)-1;
@@ -418,6 +441,7 @@ void GetThreadStackAndTls(bool main, uptr *stk_addr, uptr *stk_size,
 #endif
 }
 
+#if !SANITIZER_GO
 void StackTrace::SlowUnwindStack(uptr pc, uptr max_depth) {
   CHECK_GE(max_depth, 2);
   // FIXME: CaptureStackBackTrace might be too slow for us.
@@ -435,8 +459,32 @@ void StackTrace::SlowUnwindStack(uptr pc, uptr max_depth) {
 
 void StackTrace::SlowUnwindStackWithContext(uptr pc, void *context,
                                             uptr max_depth) {
-  UNREACHABLE("no signal context on windows");
+  CONTEXT ctx = *(CONTEXT *)context;
+  STACKFRAME64 stack_frame;
+  memset(&stack_frame, 0, sizeof(stack_frame));
+  size = 0;
+#if defined(_WIN64)
+  int machine_type = IMAGE_FILE_MACHINE_AMD64;
+  stack_frame.AddrPC.Offset = ctx.Rip;
+  stack_frame.AddrFrame.Offset = ctx.Rbp;
+  stack_frame.AddrStack.Offset = ctx.Rsp;
+#else
+  int machine_type = IMAGE_FILE_MACHINE_I386;
+  stack_frame.AddrPC.Offset = ctx.Eip;
+  stack_frame.AddrFrame.Offset = ctx.Ebp;
+  stack_frame.AddrStack.Offset = ctx.Esp;
+#endif
+  stack_frame.AddrPC.Mode = AddrModeFlat;
+  stack_frame.AddrFrame.Mode = AddrModeFlat;
+  stack_frame.AddrStack.Mode = AddrModeFlat;
+  while (StackWalk64(machine_type, GetCurrentProcess(), GetCurrentThread(),
+                     &stack_frame, &ctx, NULL, &SymFunctionTableAccess64,
+                     &SymGetModuleBase64, NULL) &&
+         size < Min(max_depth, kStackTraceMax)) {
+    trace[size++] = (uptr)stack_frame.AddrPC.Offset;
+  }
 }
+#endif  // #if !SANITIZER_GO
 
 void MaybeOpenReportFile() {
   // Windows doesn't have native fork, and we don't support Cygwin or other
@@ -472,6 +520,11 @@ bool IsDeadlySignal(int signum) {
   return false;
 }
 
+bool IsAccessibleMemoryRange(uptr beg, uptr size) {
+  // FIXME: Actually implement this function.
+  return true;
+}
+
 }  // namespace __sanitizer
 
 #endif  // _WIN32