Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 194 insertions, 0 deletions

diff --git a/mozglue/baseprofiler/core/shared-libraries-win32.cc b/mozglue/baseprofiler/core/shared-libraries-win32.cc
new file mode 100644
index 0000000000..ab9d527528
--- /dev/null
+++ b/mozglue/baseprofiler/core/shared-libraries-win32.cc
@@ -0,0 +1,194 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <windows.h>
+
+#include "BaseProfilerSharedLibraries.h"
+
+#include "mozilla/glue/WindowsUnicode.h"
+#include "mozilla/NativeNt.h"
+#include "mozilla/WindowsEnumProcessModules.h"
+#include "mozilla/WindowsVersion.h"
+
+#include <cctype>
+#include <string>
+
+static constexpr char digits[16] = {'0', '1', '2', '3', '4', '5', '6', '7',
+                                    '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
+
+static void AppendHex(const unsigned char* aBegin, const unsigned char* aEnd,
+                      std::string& aOut) {
+  for (const unsigned char* p = aBegin; p < aEnd; ++p) {
+    unsigned char c = *p;
+    aOut += digits[c >> 4];
+    aOut += digits[c & 0xFu];
+  }
+}
+
+static constexpr bool WITH_PADDING = true;
+static constexpr bool WITHOUT_PADDING = false;
+template <typename T>
+static void AppendHex(T aValue, std::string& aOut, bool aWithPadding) {
+  for (int i = sizeof(T) * 2 - 1; i >= 0; --i) {
+    unsigned nibble = (aValue >> (i * 4)) & 0xFu;
+    // If no-padding requested, skip starting zeroes -- unless we're on the very
+    // last nibble (so we don't output a blank).
+    if (!aWithPadding && i != 0) {
+      if (nibble == 0) {
+        // Requested no padding, skip zeroes.
+        continue;
+      }
+      // Requested no padding, got first non-zero, pretend we now want padding
+      // so we don't skip zeroes anymore.
+      aWithPadding = true;
+    }
+    aOut += digits[nibble];
+  }
+}
+
+static bool IsModuleUnsafeToLoad(const std::string& aModuleName) {
+  auto LowerCaseEqualsLiteral = [](char aModuleChar, char aDetouredChar) {
+    return std::tolower(aModuleChar) == aDetouredChar;
+  };
+
+#if defined(_M_AMD64) || defined(_M_IX86)
+  // Hackaround for Bug 1607574.  Nvidia's shim driver nvd3d9wrap[x].dll detours
+  // LoadLibraryExW and it causes AV when the following conditions are met.
+  //   1. LoadLibraryExW was called for "detoured.dll"
+  //   2. nvinit[x].dll was unloaded
+  //   3. OS version is older than 6.2
+#  if defined(_M_AMD64)
+  LPCWSTR kNvidiaShimDriver = L"nvd3d9wrapx.dll";
+  LPCWSTR kNvidiaInitDriver = L"nvinitx.dll";
+#  elif defined(_M_IX86)
+  LPCWSTR kNvidiaShimDriver = L"nvd3d9wrap.dll";
+  LPCWSTR kNvidiaInitDriver = L"nvinit.dll";
+#  endif
+  constexpr std::string_view detoured_dll = "detoured.dll";
+  if (std::equal(aModuleName.cbegin(), aModuleName.cend(),
+                 detoured_dll.cbegin(), detoured_dll.cend(),
+                 LowerCaseEqualsLiteral) &&
+      !mozilla::IsWin8OrLater() && ::GetModuleHandleW(kNvidiaShimDriver) &&
+      !::GetModuleHandleW(kNvidiaInitDriver)) {
+    return true;
+  }
+#endif  // defined(_M_AMD64) || defined(_M_IX86)
+
+  // Hackaround for Bug 1723868.  There is no safe way to prevent the module
+  // Microsoft's VP9 Video Decoder from being unloaded because mfplat.dll may
+  // have posted more than one task to unload the module in the work queue
+  // without calling LoadLibrary.
+  constexpr std::string_view vp9_decoder_dll = "msvp9dec_store.dll";
+  if (std::equal(aModuleName.cbegin(), aModuleName.cend(),
+                 vp9_decoder_dll.cbegin(), vp9_decoder_dll.cend(),
+                 LowerCaseEqualsLiteral)) {
+    return true;
+  }
+
+  return false;
+}
+
+SharedLibraryInfo SharedLibraryInfo::GetInfoForSelf() {
+  SharedLibraryInfo sharedLibraryInfo;
+
+  auto addSharedLibraryFromModuleInfo =
+      [&sharedLibraryInfo](const wchar_t* aModulePath, HMODULE aModule) {
+        mozilla::UniquePtr<char[]> utf8ModulePath(
+            mozilla::glue::WideToUTF8(aModulePath));
+        if (!utf8ModulePath) {
+          return;
+        }
+
+        std::string modulePathStr(utf8ModulePath.get());
+        size_t pos = modulePathStr.find_last_of("\\/");
+        std::string moduleNameStr = (pos != std::string::npos)
+                                        ? modulePathStr.substr(pos + 1)
+                                        : modulePathStr;
+
+        // If the module is unsafe to call LoadLibraryEx for, we skip.
+        if (IsModuleUnsafeToLoad(moduleNameStr)) {
+          return;
+        }
+
+        // Load the module again to make sure that its handle will remain
+        // valid as we attempt to read the PDB information from it.  We load the
+        // DLL as a datafile so that we don't end up running the newly loaded
+        // module's DllMain function.  If the original handle |aModule| is
+        // valid, LoadLibraryEx just increments its refcount.
+        // LOAD_LIBRARY_AS_IMAGE_RESOURCE is needed to read information from the
+        // sections (not PE headers) which should be relocated by the loader,
+        // otherwise GetPdbInfo() will cause a crash.
+        nsModuleHandle handleLock(::LoadLibraryExW(
+            aModulePath, NULL,
+            LOAD_LIBRARY_AS_DATAFILE | LOAD_LIBRARY_AS_IMAGE_RESOURCE));
+        if (!handleLock) {
+          return;
+        }
+
+        mozilla::nt::PEHeaders headers(handleLock.get());
+        if (!headers) {
+          return;
+        }
+
+        mozilla::Maybe<mozilla::Range<const uint8_t>> bounds =
+            headers.GetBounds();
+        if (!bounds) {
+          return;
+        }
+
+        // Put the original |aModule| into SharedLibrary, but we get debug info
+        // from |handleLock| as |aModule| might be inaccessible.
+        const uintptr_t modStart = reinterpret_cast<uintptr_t>(aModule);
+        const uintptr_t modEnd = modStart + bounds->length();
+
+        std::string breakpadId;
+        std::string pdbPathStr;
+        std::string pdbNameStr;
+        if (const auto* debugInfo = headers.GetPdbInfo()) {
+          MOZ_ASSERT(breakpadId.empty());
+          const GUID& pdbSig = debugInfo->pdbSignature;
+          AppendHex(pdbSig.Data1, breakpadId, WITH_PADDING);
+          AppendHex(pdbSig.Data2, breakpadId, WITH_PADDING);
+          AppendHex(pdbSig.Data3, breakpadId, WITH_PADDING);
+          AppendHex(reinterpret_cast<const unsigned char*>(&pdbSig.Data4),
+                    reinterpret_cast<const unsigned char*>(&pdbSig.Data4) +
+                        sizeof(pdbSig.Data4),
+                    breakpadId);
+          AppendHex(debugInfo->pdbAge, breakpadId, WITHOUT_PADDING);
+
+          // The PDB file name could be different from module filename,
+          // so report both
+          // e.g. The PDB for C:\Windows\SysWOW64\ntdll.dll is wntdll.pdb
+          pdbPathStr = debugInfo->pdbFileName;
+          size_t pos = pdbPathStr.find_last_of("\\/");
+          pdbNameStr = (pos != std::string::npos) ? pdbPathStr.substr(pos + 1)
+                                                  : pdbPathStr;
+        }
+
+        std::string versionStr;
+        uint64_t version;
+        if (headers.GetVersionInfo(version)) {
+          versionStr += std::to_string((version >> 48) & 0xFFFF);
+          versionStr += '.';
+          versionStr += std::to_string((version >> 32) & 0xFFFF);
+          versionStr += '.';
+          versionStr += std::to_string((version >> 16) & 0xFFFF);
+          versionStr += '.';
+          versionStr += std::to_string(version & 0xFFFF);
+        }
+
+        SharedLibrary shlib(modStart, modEnd,
+                            0,  // DLLs are always mapped at offset 0 on Windows
+                            breakpadId, moduleNameStr, modulePathStr,
+                            pdbNameStr, pdbPathStr, versionStr, "");
+        sharedLibraryInfo.AddSharedLibrary(shlib);
+      };
+
+  mozilla::EnumerateProcessModules(addSharedLibraryFromModuleInfo);
+  return sharedLibraryInfo;
+}
+
+void SharedLibraryInfo::Initialize() { /* do nothing */
+}