egl: Silence warnings on x86-64.

Casting an unsigned int to or from a pointer directly gives warnings on
x86-64.  Add wrappers to silence the warnings.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>

src/egl/main/eglcompiler.h

@@ -2,6 +2,39 @@
 #define EGLCOMPILER_INCLUDED
 
 
+/**
+ * Get standard integer types
+ */
+#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L)
+#  include <stdint.h>
+#elif defined(_MSC_VER)
+   typedef __int8             int8_t;
+   typedef unsigned __int8    uint8_t;
+   typedef __int16            int16_t;
+   typedef unsigned __int16   uint16_t;
+#  ifndef __eglplatform_h_
+     typedef __int32            int32_t;
+#  endif
+   typedef unsigned __int32   uint32_t;
+   typedef __int64            int64_t;
+   typedef unsigned __int64   uint64_t;
+
+#  if defined(_WIN64)
+     typedef __int64            intptr_t;
+     typedef unsigned __int64   uintptr_t;
+#  else
+     typedef __int32            intptr_t;
+     typedef unsigned __int32   uintptr_t;
+#  endif
+
+#  define INT64_C(__val) __val##i64
+#  define UINT64_C(__val) __val##ui64
+#else
+/* hope the best instead of adding a bunch of ifdef's */
+#  include <stdint.h>
+#endif
+
+
 /**
  * Function inlining
  */

src/egl/main/eglconfig.c

@@ -34,7 +34,7 @@ void
 _eglInitConfig(_EGLConfig *config, EGLint id)
 {
    memset(config, 0, sizeof(*config));
-   config->Handle = (EGLConfig) id;
+   config->Handle = (EGLConfig) _eglUIntToPointer((unsigned int) id);
    _eglSetConfigAttrib(config, EGL_CONFIG_ID,               id);
    _eglSetConfigAttrib(config, EGL_BIND_TO_TEXTURE_RGB,     EGL_DONT_CARE);
    _eglSetConfigAttrib(config, EGL_BIND_TO_TEXTURE_RGBA,    EGL_DONT_CARE);

src/egl/main/egldisplay.c

@@ -53,7 +53,7 @@ _eglLinkDisplay(_EGLDisplay *dpy)
    assert(key);
    /* "link" the display to the hash table */
    _eglHashInsert(_eglGlobal.Displays, key, dpy);
-   dpy->Handle = (EGLDisplay) key;
+   dpy->Handle = (EGLDisplay) _eglUIntToPointer(key);
 
    return dpy->Handle;
 }
@@ -66,7 +66,8 @@ _eglLinkDisplay(_EGLDisplay *dpy)
 void
 _eglUnlinkDisplay(_EGLDisplay *dpy)
 {
-   _eglHashRemove(_eglGlobal.Displays, (EGLuint) dpy->Handle);
+   EGLuint key = _eglPointerToUInt((void *) dpy->Handle);
+   _eglHashRemove(_eglGlobal.Displays, key);
    dpy->Handle = EGL_NO_DISPLAY;
 }
 
@@ -91,7 +92,7 @@ _eglGetDisplayHandle(_EGLDisplay *display)
 _EGLDisplay *
 _eglLookupDisplay(EGLDisplay dpy)
 {
-   EGLuint key = (EGLuint) dpy;
+   EGLuint key = _eglPointerToUInt((void *) dpy);
    return (_EGLDisplay *) _eglHashLookup(_eglGlobal.Displays, key);
 }
 
@@ -224,7 +225,7 @@ _eglUnlinkContext(_EGLContext *ctx)
 EGLContext
 _eglGetContextHandle(_EGLContext *ctx)
 {
-   return (EGLContext) (ctx && ctx->Display) ? ctx : EGL_NO_CONTEXT;
+   return (EGLContext) ((ctx && ctx->Display) ? ctx : EGL_NO_CONTEXT);
 }
 
 
@@ -257,7 +258,7 @@ _eglLinkSurface(_EGLSurface *surf, _EGLDisplay *dpy)
    assert(key);
    _eglHashInsert(_eglGlobal.Surfaces, key, surf);
 
-   surf->Handle = (EGLSurface) key;
+   surf->Handle = (EGLSurface) _eglUIntToPointer(key);
    return surf->Handle;
 }
 
@@ -270,8 +271,9 @@ void
 _eglUnlinkSurface(_EGLSurface *surf)
 {
    _EGLSurface *prev;
+   EGLuint key = _eglPointerToUInt((void *) surf->Handle);
 
-   _eglHashRemove(_eglGlobal.Surfaces, (EGLuint) surf->Handle);
+   _eglHashRemove(_eglGlobal.Surfaces, key);
    surf->Handle = EGL_NO_SURFACE;
 
    prev = surf->Display->SurfaceList;
@@ -314,7 +316,6 @@ _eglGetSurfaceHandle(_EGLSurface *surface)
 _EGLSurface *
 _eglLookupSurface(EGLSurface surf)
 {
-   _EGLSurface *c = (_EGLSurface *) _eglHashLookup(_eglGlobal.Surfaces,
-                                                   (EGLuint) surf);
-   return c;
+   EGLuint key = _eglPointerToUInt((void *) surf);
+   return (_EGLSurface *) _eglHashLookup(_eglGlobal.Surfaces, key);
 }

src/egl/main/egldisplay.h

@@ -125,4 +125,25 @@ _eglIsSurfaceLinked(_EGLSurface *surf)
 }
 
 
+/**
+ * Cast an unsigned int to a pointer.
+ */
+static INLINE void *
+_eglUIntToPointer(unsigned int v)
+{
+   return (void *) ((uintptr_t) v);
+}
+
+
+/**
+ * Cast a pointer to an unsigned int.  The pointer must be one that is
+ * returned by _eglUIntToPointer.
+ */
+static INLINE unsigned int
+_eglPointerToUInt(const void *p)
+{
+   return (unsigned int) ((uintptr_t) p);
+}
+
+
 #endif /* EGLDISPLAY_INCLUDED */