fixes issues with minidump on win32

minidump did not have proper exception record passed in, so it did not
contain actual issue of the unhandled exception. Also stack walking
before was mutating registers in exception CONTEXT, this means that
minidump did not have proper call stack anymore. Now code make a local
copy of CONTEXT for stack walking.

src/os/core/win32/os_core_win32.c

@@ -1521,7 +1521,7 @@ win32_exception_filter(EXCEPTION_POINTERS* exception_ptrs)
     {
       HANDLE process = GetCurrentProcess();
       HANDLE thread = GetCurrentThread();
-      CONTEXT* context = exception_ptrs->ContextRecord;
+      CONTEXT context = *exception_ptrs->ContextRecord;
       
       WCHAR module_path[MAX_PATH];
       GetModuleFileNameW(NULL, module_path, ArrayCount(module_path));
@@ -1552,19 +1552,19 @@ win32_exception_filter(EXCEPTION_POINTERS* exception_ptrs)
           DWORD image_type;
 #if defined(_M_AMD64)
           image_type = IMAGE_FILE_MACHINE_AMD64;
-          frame.AddrPC.Offset = context->Rip;
+          frame.AddrPC.Offset = context.Rip;
           frame.AddrPC.Mode = AddrModeFlat;
-          frame.AddrFrame.Offset = context->Rbp;
+          frame.AddrFrame.Offset = context.Rbp;
           frame.AddrFrame.Mode = AddrModeFlat;
-          frame.AddrStack.Offset = context->Rsp;
+          frame.AddrStack.Offset = context.Rsp;
           frame.AddrStack.Mode = AddrModeFlat;
 #elif defined(_M_ARM64)
           image_type = IMAGE_FILE_MACHINE_ARM64;
-          frame.AddrPC.Offset = context->Pc;
+          frame.AddrPC.Offset = context.Pc;
           frame.AddrPC.Mode = AddrModeFlat;
-          frame.AddrFrame.Offset = context->Fp;
+          frame.AddrFrame.Offset = context.Fp;
           frame.AddrFrame.Mode = AddrModeFlat;
-          frame.AddrStack.Offset = context->Sp;
+          frame.AddrStack.Offset = context.Sp;
           frame.AddrStack.Mode = AddrModeFlat;
 #else
 #  error Arch not supported!
@@ -1594,11 +1594,11 @@ win32_exception_filter(EXCEPTION_POINTERS* exception_ptrs)
               frame.AddrPC.Offset = *(DWORD64*)frame.AddrStack.Offset - 1;
               frame.AddrStack.Offset += sizeof(void*);
 #if defined(_M_AMD64)
-              context->Rip = frame.AddrPC.Offset;
-              context->Rsp = frame.AddrStack.Offset;
+              context.Rip = frame.AddrPC.Offset;
+              context.Rsp = frame.AddrStack.Offset;
 #elif defined(_M_ARM64)
-              context->Pc = frame.AddrPC.Offset;
-              context->Sp = frame.AddrStack.Offset;
+              context.Pc = frame.AddrPC.Offset;
+              context.Sp = frame.AddrStack.Offset;
 #endif
             }
 
@@ -1615,7 +1615,7 @@ win32_exception_filter(EXCEPTION_POINTERS* exception_ptrs)
               break;
             }
             
-            if(!dbg_StackWalk64(image_type, process, thread, &frame, context, 0, dbg_SymFunctionTableAccess64, dbg_SymGetModuleBase64, 0))
+            if(!dbg_StackWalk64(image_type, process, thread, &frame, &context, 0, dbg_SymFunctionTableAccess64, dbg_SymGetModuleBase64, 0))
             {
               break;
             }
@@ -1692,15 +1692,33 @@ win32_exception_filter(EXCEPTION_POINTERS* exception_ptrs)
   
   if(dbg_MiniDumpWriteDump && generate_crash_dump)
   {
-    WCHAR desktop_path[512] = {0};
-    SHGetFolderPathW(0, CSIDL_DESKTOP, 0, 0, desktop_path);
-    WCHAR dump_file_path[512] = {0};
-    wnsprintfW(dump_file_path, ArrayCount(dump_file_path), L"%s\\raddbg_crash_dump.dmp", desktop_path);
-    SECURITY_ATTRIBUTES security_attributes = {sizeof(security_attributes), 0, 0};
-    HANDLE file = CreateFileW(dump_file_path, GENERIC_WRITE, 0, &security_attributes, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
-    BOOL dump_successful = dbg_MiniDumpWriteDump(GetCurrentProcess(), os_get_process_info()->pid, file, MiniDumpNormal, 0, 0, 0);
-    CloseHandle(file);
-    (void)dump_successful;
+    WCHAR dump_file_path[MAX_PATH] = {0};
+    SHGetFolderPathW(0, CSIDL_DESKTOP, 0, 0, dump_file_path);
+    PathAppendW(dump_file_path, L"raddbg_crash_dump.dmp");
+    HANDLE file = CreateFileW(dump_file_path, GENERIC_WRITE, 0, 0, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
+    if (file != INVALID_HANDLE_VALUE)
+    {
+      MINIDUMP_EXCEPTION_INFORMATION info = {0};
+      info.ThreadId = GetCurrentThreadId();
+      info.ExceptionPointers = exception_ptrs;
+      info.ClientPointers = FALSE;
+      BOOL dump_successful = dbg_MiniDumpWriteDump(GetCurrentProcess(), GetCurrentProcessId(), file, MiniDumpNormal, &info, 0, 0);
+      CloseHandle(file);
+
+      if (dump_successful)
+      {
+#if !BUILD_CONSOLE_INTERFACE
+        // opens explorer and selects file
+        SFGAOF flags = 0;
+        PIDLIST_ABSOLUTE list = 0;
+        if (SUCCEEDED(SHParseDisplayName(dump_file_path, NULL, &list, 0, &flags)))
+        {
+          SHOpenFolderAndSelectItems(list, 0, NULL, 0);
+          CoTaskMemFree(list);
+        }
+#endif
+      }
+    }
   }
   
   ExitProcess(1);
@@ -1890,6 +1908,7 @@ int wmain(int argc, WCHAR **argv)
 #else
 int wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPWSTR lpCmdLine, int nShowCmd)
 {
+  CoInitializeEx(0, COINIT_APARTMENTTHREADED);
   w32_entry_point_caller(__argc, __wargv);
   return 0;
 }

src/os/core/win32/os_core_win32.h

@@ -16,7 +16,7 @@
 #include <Shlobj.h>
 #include <processthreadsapi.h>
 #pragma comment(lib, "user32")
-#pragma comment(lib, "winmm")
+#pragma comment(lib, "ole32")
 #pragma comment(lib, "shell32")
 #pragma comment(lib, "advapi32")
 #pragma comment(lib, "rpcrt4")

src/os/gfx/win32/os_gfx_win32.h

@@ -13,8 +13,6 @@
 #pragma comment(lib, "gdi32")
 #pragma comment(lib, "dwmapi")
 #pragma comment(lib, "UxTheme")
-#pragma comment(lib, "ole32")
-#pragma comment(lib, "user32")
 #pragma comment(lib, "comdlg32")
 #ifndef WM_NCUAHDRAWCAPTION
 #define WM_NCUAHDRAWCAPTION (0x00AE)