fps.patch

diff --git a/src/game/game_init.c b/src/game/game_init.c
index e5552ec..b134990 100644
--- a/src/game/game_init.c
+++ b/src/game/game_init.c
@@ -64,6 +64,29 @@ struct DemoInput *gCurrDemoInput = NULL; // demo input sequence
 u16 gDemoInputListID = 0;
 struct DemoInput gRecordedDemoInput = { 0 }; // possibly removed in EU. TODO: Check
 
+static OSTime gLastOSTime = 0;
+static u8 gRenderFPS = FALSE;
+
+static void render_fps(void) {
+    // Toggle rendering framerate with the L button.
+    if (gPlayer1Controller->buttonPressed & L_TRIG) {
+        gRenderFPS ^= 1;
+    }
+
+#ifdef _60FPS_PATCH
+    float multiplier = 2.0f;
+#else
+    float multiplier = 1.0f;
+#endif
+    if (gRenderFPS) {
+        OSTime newTime = osGetTime();
+        float fps = multiplier * 1000000.0f / (newTime - gLastOSTime);
+
+        print_text_fmt_int(GFX_DIMENSIONS_RECT_FROM_LEFT_EDGE(22), 184, "FPS %d", fps);
+        gLastOSTime = newTime;
+    }
+}
+
 /**
  * Initializes the Reality Display Processor (RDP).
  * This function initializes settings such as texture filtering mode,
@@ -654,6 +677,8 @@ void game_loop_one_iteration(void) {
         levelCommandAddr = level_script_execute(levelCommandAddr);
 
         display_and_vsync();
+        
+        render_fps();
 
         // when debug info is enabled, print the "BUF %d" information.
         if (gShowDebugText) {
diff --git a/src/pc/ultra_reimplementation.c b/src/pc/ultra_reimplementation.c
index 2b28ea8..541b419 100644
--- a/src/pc/ultra_reimplementation.c
+++ b/src/pc/ultra_reimplementation.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <string.h>
+#include <sys/time.h>
 #include "lib/src/libultra_internal.h"
 #include "macros.h"
 
@@ -75,7 +76,9 @@ void osViSwapBuffer(UNUSED void *vaddr) {
 }
 
 OSTime osGetTime(void) {
-    return 0;
+    struct timeval tv;
+    gettimeofday(&tv, NULL);
+    return (unsigned long)tv.tv_sec * 1000000 + tv.tv_usec;
 }
 
 void osWritebackDCacheAll(void) {