diff options
Diffstat (limited to 'src/3rdparty/webkit/WebCore/plugins/win/PluginViewWin.cpp')
| -rw-r--r-- | src/3rdparty/webkit/WebCore/plugins/win/PluginViewWin.cpp | 46 |
1 files changed, 44 insertions, 2 deletions
diff --git a/src/3rdparty/webkit/WebCore/plugins/win/PluginViewWin.cpp b/src/3rdparty/webkit/WebCore/plugins/win/PluginViewWin.cpp index c97984dda..268718643 100644 --- a/src/3rdparty/webkit/WebCore/plugins/win/PluginViewWin.cpp +++ b/src/3rdparty/webkit/WebCore/plugins/win/PluginViewWin.cpp @@ -117,6 +117,14 @@ static BYTE* beginPaint; static unsigned endPaintSysCall; static BYTE* endPaint; +typedef HDC (WINAPI *PtrBeginPaint)(HWND, PAINTSTRUCT*); +typedef BOOL (WINAPI *PtrEndPaint)(HWND, const PAINTSTRUCT*); + +#if PLATFORM(WIN_OS) && PLATFORM(X86_64) && COMPILER(MSVC) +extern "C" HDC __stdcall _HBeginPaint(HWND hWnd, LPPAINTSTRUCT lpPaint); +extern "C" BOOL __stdcall _HEndPaint(HWND hWnd, const PAINTSTRUCT* lpPaint); +#endif + HDC WINAPI PluginView::hookedBeginPaint(HWND hWnd, PAINTSTRUCT* lpPaint) { PluginView* pluginView = reinterpret_cast<PluginView*>(GetProp(hWnd, kWebPluginViewProperty)); @@ -139,12 +147,14 @@ HDC WINAPI PluginView::hookedBeginPaint(HWND hWnd, PAINTSTRUCT* lpPaint) : "memory" ); return result; -#else +#elif defined(_M_IX86) // Call through to the original BeginPaint. __asm mov eax, beginPaintSysCall __asm push lpPaint __asm push hWnd __asm call beginPaint +#else + return _HBeginPaint(hWnd, lpPaint); #endif } @@ -166,12 +176,14 @@ BOOL WINAPI PluginView::hookedEndPaint(HWND hWnd, const PAINTSTRUCT* lpPaint) : "a" (endPaintSysCall), "g" (lpPaint), "g" (hWnd), "m" (*endPaint) ); return result; -#else +#elif defined (_M_IX86) // Call through to the original EndPaint. __asm mov eax, endPaintSysCall __asm push lpPaint __asm push hWnd __asm call endPaint +#else + return _HEndPaint(hWnd, lpPaint); #endif } @@ -184,6 +196,7 @@ static void hook(const char* module, const char* proc, unsigned& sysCallID, BYTE pProc = reinterpret_cast<BYTE*>(reinterpret_cast<ptrdiff_t>(GetProcAddress(hMod, proc))); +#if COMPILER(GCC) || defined(_M_IX86) if (pProc[0] != 0xB8) return; @@ -199,6 +212,35 @@ static void hook(const char* module, const char* proc, unsigned& sysCallID, BYTE *reinterpret_cast<unsigned*>(pProc + 1) = reinterpret_cast<intptr_t>(pNewProc) - reinterpret_cast<intptr_t>(pProc + 5); pProc += 5; +#else + /* Disassembly of BeginPaint() + 00000000779FC5B0 4C 8B D1 mov r10,rcx + 00000000779FC5B3 B8 17 10 00 00 mov eax,1017h + 00000000779FC5B8 0F 05 syscall + 00000000779FC5BA C3 ret + 00000000779FC5BB 90 nop + 00000000779FC5BC 90 nop + 00000000779FC5BD 90 nop + 00000000779FC5BE 90 nop + 00000000779FC5BF 90 nop + 00000000779FC5C0 90 nop + 00000000779FC5C1 90 nop + 00000000779FC5C2 90 nop + 00000000779FC5C3 90 nop + */ + // Check for the signature as in the above disassembly + DWORD guard = 0xB8D18B4C; + if (*reinterpret_cast<DWORD*>(pProc) != guard) + return; + + DWORD flOldProtect; + VirtualProtect(pProc, 12, PAGE_EXECUTE_READWRITE, & flOldProtect); + pProc[0] = 0x48; // mov rax, this + pProc[1] = 0xb8; + *(__int64*)(pProc+2) = (__int64)pNewProc; + pProc[10] = 0xff; // jmp rax + pProc[11] = 0xe0; +#endif } static void setUpOffscreenPaintingHooks(HDC (WINAPI*hookedBeginPaint)(HWND, PAINTSTRUCT*), BOOL (WINAPI*hookedEndPaint)(HWND, const PAINTSTRUCT*)) |