nulldrv: Creation of the nulldrv, for use on Windows.
Since the sample Intel driver hasn't been ported to Windows, this nulldrv is
being used to bootstrap Windows support. It can also provide a hint to new
IHV's for how to set the magic number.
diff --git a/icd/common/icd-utils.h b/icd/common/icd-utils.h
index 5304d15..aad6c3e 100644
--- a/icd/common/icd-utils.h
+++ b/icd/common/icd-utils.h
@@ -31,7 +31,9 @@
#include <stdbool.h>
#include <stdint.h>
#include <assert.h>
+#if defined(PLATFORM_LINUX)
#include <strings.h> /* for ffs() */
+#endif
#include "icd.h"
#if defined(NDEBUG) && defined(__GNUC__)
@@ -63,28 +65,32 @@
/**
* Return true if val is power of two, or zero.
*/
-static inline bool u_is_pow2(unsigned int val)
+STATIC_INLINE bool u_is_pow2(unsigned int val)
{
return ((val & (val - 1)) == 0);
}
-static inline int u_ffs(int val)
+STATIC_INLINE int u_ffs(int val)
{
- return ffs(val);
+#if defined(PLATFORM_LINUX)
+ return ffs(val);
+#else
+ return __lzcnt(val) + 1;
+#endif
}
-static inline unsigned int u_align(unsigned int val, unsigned alignment)
+STATIC_INLINE unsigned int u_align(unsigned int val, unsigned alignment)
{
assert(alignment && u_is_pow2(alignment));
return (val + alignment - 1) & ~(alignment - 1);
}
-static inline unsigned int u_minify(unsigned int val, unsigned level)
+STATIC_INLINE unsigned int u_minify(unsigned int val, unsigned level)
{
return (val >> level) ? val >> level : 1;
}
-static inline uint32_t u_fui(float f)
+STATIC_INLINE uint32_t u_fui(float f)
{
union {
float f;
@@ -94,7 +100,7 @@
return u.ui;
}
-static inline float u_uif(uint32_t ui)
+STATIC_INLINE float u_uif(uint32_t ui)
{
union {
float f;
@@ -104,7 +110,7 @@
return u.f;
}
-static inline int u_iround(float f)
+STATIC_INLINE int u_iround(float f)
{
if (f >= 0.0f)
return (int) (f + 0.5f);