Changeset 2827 for trunk/kLdr/kLdrHlp.h

Timestamp:

Oct 22, 2006, 8:05:28 PM (19 years ago)

Author:

bird

Message:

image format headers.

File:

• trunk/kLdr/kLdrHlp.h (modified) (1 diff)

trunk/kLdr/kLdrHlp.h

@@ -32 +32 @@
  * @internal
  * @{ */
+
 /** Get the minimum of two values. */
 #define KLDR_MIN(a, b) ((a) <= (b) ? (a) : (b))
-
+/** Calculate the offset of a structure member. */
+#define KLDR_OFFSETOF(strct, memb)  ( (size_t)( ((strct *)0)->memb ) )
 /** Align a size_t value. */
 #define KLDR_ALIGN_Z(val, align)    ( ((val) + ((align) - 1)) & ~(size_t)((align) - 1) )
 /** Align a void * value. */
 #define KLDR_ALIGN_P(pv, align)     ( (void *)( ((uintptr_t)(pv) + ((align) - 1)) & ~(uintptr_t)((align) - 1) ) )
+/** @def KLDRHLP_LE2H_U16
+ * Unsigned 16-bit little-endian to host translation. */
+/** @def KLDRHLP_LE2H_U32
+ * Unsigned 32-bit little-endian to host translation. */
+#if 1
+# define KLDRHLP_LE2H_U16(u16)  ((uint16_t)(u16))
+# define KLDRHLP_LE2H_U32(u32)  ((uint32_t)(u32))
+#else
+# define KLDRHLP_LE2H_U16(u16)  ( (uint16_t) (((u16) >> 8) | ((u16) << 8)) )
+# define KLDRHLP_LE2H_U32(u32)  (   ( ((u32) & UINT32_C(0xff000000)) >> 24 ) \
+                                  | ( ((u32) & UINT32_C(0x00ff0000)) >>  8 ) \
+                                  | ( ((u32) & UINT32_C(0x0000ff00)) <<  8 ) \
+                                  | ( ((u32) & UINT32_C(0x000000ff)) << 24 ) \
+                                )
+#endif
 
 /*