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bswap: Add st24_be_p() to store 24 bits in big-endian order

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Commit 14180d6221 ("bswap: Add the ability to store to an
unaligned 24 bit field") added st24_le_p() for little
endianness, add st24_be_p() equivalent for bit one.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240621075607.17902-1-philmd@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2024-06-20 18:51:01 +02:00
parent c9ba79baca
commit 4fbeddb088
1 changed files with 7 additions and 0 deletions
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7
include/qemu/bswap.h
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@ -38,12 +38,14 @@ static inline void bswap64s(uint64_t *s)
#if HOST_BIG_ENDIAN #if HOST_BIG_ENDIAN
#define be_bswap(v, size) (v) #define be_bswap(v, size) (v)
#define le_bswap(v, size) glue(__builtin_bswap, size)(v) #define le_bswap(v, size) glue(__builtin_bswap, size)(v)
#define be_bswap24(v) (v)
#define le_bswap24(v) bswap24(v) #define le_bswap24(v) bswap24(v)
#define be_bswaps(v, size) #define be_bswaps(v, size)
#define le_bswaps(p, size) \ #define le_bswaps(p, size) \
do { *p = glue(__builtin_bswap, size)(*p); } while (0) do { *p = glue(__builtin_bswap, size)(*p); } while (0)
#else #else
#define le_bswap(v, size) (v) #define le_bswap(v, size) (v)
#define be_bswap24(v) bswap24(v)
#define le_bswap24(v) (v) #define le_bswap24(v) (v)
#define be_bswap(v, size) glue(__builtin_bswap, size)(v) #define be_bswap(v, size) glue(__builtin_bswap, size)(v)
#define le_bswaps(v, size) #define le_bswaps(v, size)
@ -357,6 +359,11 @@ static inline void stw_be_p(void *ptr, uint16_t v)
stw_he_p(ptr, be_bswap(v, 16)); stw_he_p(ptr, be_bswap(v, 16));
} }
static inline void st24_be_p(void *ptr, uint32_t v)
{
st24_he_p(ptr, be_bswap24(v));
}
static inline void stl_be_p(void *ptr, uint32_t v) static inline void stl_be_p(void *ptr, uint32_t v)
{ {
stl_he_p(ptr, be_bswap(v, 32)); stl_he_p(ptr, be_bswap(v, 32));