These changes are the raw update to qemu-2.6.

[kvmfornfv.git] / qemu / include / qemu / bswap.h

diff --git a/qemu/include/qemu/bswap.h b/qemu/include/qemu/bswap.h
index 07d88de..ce3c42e 100644 (file)
--- a/qemu/include/qemu/bswap.h
+++ b/qemu/include/qemu/bswap.h
@@ -1,15 +1,10 @@
 #ifndef BSWAP_H
 #define BSWAP_H
 
-#include "config-host.h"
-#include <inttypes.h>
-#include <limits.h>
-#include <string.h>
 #include "fpu/softfloat.h"
 
 #ifdef CONFIG_MACHINE_BSWAP_H
 # include <sys/endian.h>
-# include <sys/types.h>
 # include <machine/bswap.h>
 #elif defined(__FreeBSD__)
 # include <sys/endian.h>
@@ -130,6 +125,25 @@ static inline uint32_t qemu_bswap_len(uint32_t value, int len)
     return bswap32(value) >> (32 - 8 * len);
 }
 
+/*
+ * Same as cpu_to_le{16,23}, except that gcc will figure the result is
+ * a compile-time constant if you pass in a constant.  So this can be
+ * used to initialize static variables.
+ */
+#if defined(HOST_WORDS_BIGENDIAN)
+# define const_le32(_x)                          \
+    ((((_x) & 0x000000ffU) << 24) |              \
+     (((_x) & 0x0000ff00U) <<  8) |              \
+     (((_x) & 0x00ff0000U) >>  8) |              \
+     (((_x) & 0xff000000U) >> 24))
+# define const_le16(_x)                          \
+    ((((_x) & 0x00ff) << 8) |                    \
+     (((_x) & 0xff00) >> 8))
+#else
+# define const_le32(_x) (_x)
+# define const_le16(_x) (_x)
+#endif
+
 /* Unions for reinterpreting between floats and integers.  */
 
 typedef union {
@@ -424,11 +438,9 @@ static inline void stfq_be_p(void *ptr, float64 v)
 
 static inline unsigned long leul_to_cpu(unsigned long v)
 {
-    /* In order to break an include loop between here and
-       qemu-common.h, don't rely on HOST_LONG_BITS.  */
-#if ULONG_MAX == UINT32_MAX
+#if HOST_LONG_BITS == 32
     return le_bswap(v, 32);
-#elif ULONG_MAX == UINT64_MAX
+#elif HOST_LONG_BITS == 64
     return le_bswap(v, 64);
 #else
 # error Unknown sizeof long