glide2x, h3, linhwc.c: fix a strict aliasing issue (same as in sst96.)

also make some stuff static.

glide2x/h3/minihwc/linhwc.c

@@ -103,7 +103,7 @@ static int		    screenNum   = 0;
 static int		    screenWidth = 0;
 static int		    screenHeight= 0;
 static int		    screenDepth = 0;
-static void*		    screenPhys  = 0;
+static void*		    screenPhys  = 0;/* not really used */
 static int		    screenMem   = 0;
 static XF86VidModeModeInfo  **vidModes  = 0;
 static int		    inDGA       = 0;
@@ -124,7 +124,7 @@ typedef struct envitem_t {
 static envitem *first=0;
 static int envinit=0;
 
-static void loadEnvFile() {
+static void loadEnvFile(void) {
   FILE *file;
   char data[128];
   char *env, *val;
@@ -162,7 +162,8 @@ static void loadEnvFile() {
   }
 }
 
-static void deleteEnvData() {
+#if 0 /* not used */
+static void deleteEnvData(void) {
   envitem *ptr, *next;
 
   ptr=first;
@@ -176,9 +177,10 @@ static void deleteEnvData() {
   first=0;
   envinit=0;
 }
+#endif
 
 const char *
-hwcGetErrorString()
+hwcGetErrorString(void)
 {
 #define FN_NAME "hwcGetErrorString"
   return errorString;
@@ -188,6 +190,7 @@ hwcGetErrorString()
 static int initX(int index) {
   int eventbase, errorbase, flags;
   int banksize;
+  unsigned int baseaddr;
 
   if (dpy!=0) return FXTRUE;
   dpy=XOpenDisplay("");
@@ -205,8 +208,9 @@ static int initX(int index) {
     }
   }
   screenNum=DefaultScreen(dpy);
-  XF86DGAGetVideoLL(dpy, screenNum, (int*)&screenPhys, &screenWidth, &banksize,
+  XF86DGAGetVideoLL(dpy, screenNum, &baseaddr, &screenWidth, &banksize,
 		    &screenMem);
+  screenPhys = (void *)baseaddr;
   screenMem*=1024;
   screenHeight=DisplayHeight(dpy, screenNum);
   screenDepth=DefaultDepth(dpy, screenNum);
@@ -678,7 +682,6 @@ hwcInitVideoOverlaySurface(
   HWC_IO_LOAD((*rInfo), vidDesktopOverlayStride, doStride);
   doStride &= ~(SST_OVERLAY_LINEAR_STRIDE | SST_OVERLAY_TILE_STRIDE);
 
-  
   /* Overlay Hack: leave the stride alone for the hack */
   if (!GETENV ("SSTH3_DESKTOP_OVERLAY"))
   {
@@ -919,7 +922,7 @@ hwcInitVideo(hwcBoardInfo *bInfo, FxBool tiled, FxVideoTimingInfo
   return FXTRUE;
 }
 
-void repaintX() {
+static void repaintX(void) {
   XSetWindowAttributes xswa;
   unsigned long mask=0;
   Visual visual;
@@ -1005,7 +1008,6 @@ calcBufferHeightInTiles(FxU32 yres)
   FxU32
     heightInTiles;            /* Height of buffer in tiles */
 
-
   /* Calculate tile height stuff */
   heightInTiles = yres >> 5;
 
@@ -1203,7 +1205,6 @@ hwcGammaRGB(hwcBoardInfo *bInfo, float gammaR, float gammaG, float gammaB)
     gbRamp[i] = (FxU32)((pow(i/255.0F, 1.0F/gammaB)) * 255.0F + 0.5F);
   }
 
-
   hwcGammaTable(bInfo, 256, grRamp, ggRamp, gbRamp); 
 
   /*