Merge commit 'dec0d4ec4153bf9fc2b78ae6c2df45b6ea8dde7a' as 'external/sdl/SDL'

external/sdl/SDL/src/timer/ngage/SDL_systimer.cpp

@@ -0,0 +1,59 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "SDL_internal.h"
+
+#ifdef SDL_TIMER_NGAGE
+
+#include <e32std.h>
+#include <e32hal.h>
+
+static TUint start_tick = 0;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+Uint64 SDL_GetPerformanceCounter(void)
+{
+    /* FIXME: Need to account for 32-bit wrapping */
+    return (Uint64)User::TickCount();
+}
+
+Uint64 SDL_GetPerformanceFrequency(void)
+{
+    return SDL_US_PER_SECOND;
+}
+
+void SDL_DelayNS(Uint64 ns)
+{
+    const Uint64 max_delay = 0x7fffffffLL * SDL_NS_PER_US;
+    if (ns > max_delay) {
+        ns = max_delay;
+    }
+    User::After(TTimeIntervalMicroSeconds32((TInt)SDL_NS_TO_US(ns)));
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SDL_TIMER_NGAGE */