+/**
+ * @file bswap.h
+ * byte swap.
+ */
+
#ifndef __BSWAP_H__
#define __BSWAP_H__
#else
#ifdef ARCH_X86
-inline static unsigned short ByteSwap16(unsigned short x)
+static inline unsigned short ByteSwap16(unsigned short x)
{
__asm("xchgb %b0,%h0" :
"=q" (x) :
}
#define bswap_16(x) ByteSwap16(x)
-inline static unsigned int ByteSwap32(unsigned int x)
+static inline unsigned int ByteSwap32(unsigned int x)
{
#if __CPU__ > 386
__asm("bswap %0":
}
#define bswap_32(x) ByteSwap32(x)
-inline static unsigned long long int ByteSwap64(unsigned long long int x)
+static inline unsigned long long int ByteSwap64(unsigned long long int x)
{
- register union { __extension__ unsigned long long int __ll;
- unsigned long int __l[2]; } __x;
+ register union { __extension__ uint64_t __ll;
+ uint32_t __l[2]; } __x;
asm("xchgl %0,%1":
"=r"(__x.__l[0]),"=r"(__x.__l[1]):
"0"(bswap_32((unsigned long)x)),"1"(bswap_32((unsigned long)(x>>32))));
}
#define bswap_64(x) ByteSwap64(x)
+#elif defined(ARCH_SH4)
+
+static inline uint16_t ByteSwap16(uint16_t x) {
+ __asm__("swap.b %0,%0":"=r"(x):"0"(x));
+ return x;
+}
+
+static inline uint32_t ByteSwap32(uint32_t x) {
+ __asm__(
+ "swap.b %0,%0\n"
+ "swap.w %0,%0\n"
+ "swap.b %0,%0\n"
+ :"=r"(x):"0"(x));
+ return x;
+}
+
+#define bswap_16(x) ByteSwap16(x)
+#define bswap_32(x) ByteSwap32(x)
+
+static inline uint64_t ByteSwap64(uint64_t x)
+{
+ union {
+ uint64_t ll;
+ struct {
+ uint32_t l,h;
+ } l;
+ } r;
+ r.l.l = bswap_32 (x);
+ r.l.h = bswap_32 (x>>32);
+ return r.ll;
+}
+#define bswap_64(x) ByteSwap64(x)
+
#else
#define bswap_16(x) (((x) & 0x00ff) << 8 | ((x) & 0xff00) >> 8)
((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \
(((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24))
-#define bswap_64(x) \
- (__extension__ \
- ({ union { __extension__ unsigned long long int __ll; \
- unsigned long int __l[2]; } __w, __r; \
- __w.__ll = (x); \
- __r.__l[0] = bswap_32 (__w.__l[1]); \
- __r.__l[1] = bswap_32 (__w.__l[0]); \
- __r.__ll; }))
+static inline uint64_t ByteSwap64(uint64_t x)
+{
+ union {
+ uint64_t ll;
+ uint32_t l[2];
+ } w, r;
+ w.ll = x;
+ r.l[0] = bswap_32 (w.l[1]);
+ r.l[1] = bswap_32 (w.l[0]);
+ return r.ll;
+}
+#define bswap_64(x) ByteSwap64(x)
+
#endif /* !ARCH_X86 */
#endif /* !HAVE_BYTESWAP_H */