From: Philippe Mathieu-Daudé <f4...@amsat.org>
We already have the const_endian() macros for 16-bit and
32-bit values. Implement the 64-bit equivalent macros.
Signed-off-by: Philippe Mathieu-Daudé <f4...@amsat.org>
---
include/qemu/bswap.h | 22 +++++++++++++++++++++-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/include/qemu/bswap.h b/include/qemu/bswap.h
index 6885984e00c..de256cea3ab 100644
--- a/include/qemu/bswap.h
+++ b/include/qemu/bswap.h
@@ -83,11 +83,20 @@ static inline void bswap64s(uint64_t *s)
#endif
/*
- * Same as cpu_to_{be,le}{16,32} described below, except that gcc will
+ * Same as cpu_to_{be,le}{16,32,64} described below, 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_le64(_x) \
+ ((((_x) & 0x00000000000000ffU) << 56) | \
+ (((_x) & 0x000000000000ff00U) << 40) | \
+ (((_x) & 0x0000000000ff0000U) << 24) | \
+ (((_x) & 0x00000000ff000000U) << 8) | \
+ (((_x) & 0x000000ff00000000U) >> 8) | \
+ (((_x) & 0x0000ff0000000000U) >> 24) | \
+ (((_x) & 0x00ff000000000000U) >> 40) | \
+ (((_x) & 0xff00000000000000U) >> 56))
# define const_le32(_x) \
((((_x) & 0x000000ffU) << 24) | \
(((_x) & 0x0000ff00U) << 8) | \
@@ -96,11 +105,22 @@ static inline void bswap64s(uint64_t *s)
# define const_le16(_x) \
((((_x) & 0x00ff) << 8) | \
(((_x) & 0xff00) >> 8))
+# define const_be64(_x) (_x)
# define const_be32(_x) (_x)
# define const_be16(_x) (_x)
#else
+# define const_le64(_x) (_x)
# define const_le32(_x) (_x)
# define const_le16(_x) (_x)
+# define const_be64(_x) \
+ ((((_x) & 0x00000000000000ffU) << 56) | \
+ (((_x) & 0x000000000000ff00U) << 40) | \
+ (((_x) & 0x0000000000ff0000U) << 24) | \
+ (((_x) & 0x00000000ff000000U) << 8) | \
+ (((_x) & 0x000000ff00000000U) >> 8) | \
+ (((_x) & 0x0000ff0000000000U) >> 24) | \
+ (((_x) & 0x00ff000000000000U) >> 40) | \
+ (((_x) & 0xff00000000000000U) >> 56))
# define const_be32(_x) \
((((_x) & 0x000000ffU) << 24) | \
(((_x) & 0x0000ff00U) << 8) | \
--
2.26.2
