diff options
| author | Richard Henderson <rth@twiddle.net> | 2013-02-04 16:21:06 -0800 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2013-02-06 08:29:21 -0600 |
| commit | 91107fdf4443d2171e06840e87277bb7a047343b (patch) | |
| tree | 389f64ce101a56c0fe6d5600211c1856bc9feb31 /include | |
| parent | 5f876756c57c15f5e14d4136fc432b74f05f082b (diff) | |
bswap: Fix width of swap in leul_to_cpu
The misnamed HOST_LONG_BITS is really HOST_POINTER_BITS. Here we're
explicitly using an unsigned long, rather than uintptr_t, so it is
more correct to select the swap size via ULONG_MAX.
Acked-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/qemu/bswap.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/include/qemu/bswap.h b/include/qemu/bswap.h index e6d4798142..d3af35d1d9 100644 --- a/include/qemu/bswap.h +++ b/include/qemu/bswap.h @@ -2,8 +2,8 @@ #define BSWAP_H #include "config-host.h" - #include <inttypes.h> +#include <limits.h> #include "fpu/softfloat.h" #ifdef CONFIG_MACHINE_BSWAP_H @@ -458,7 +458,15 @@ static inline void cpu_to_32wu(uint32_t *p, uint32_t v) static inline unsigned long leul_to_cpu(unsigned long v) { - return le_bswap(v, HOST_LONG_BITS); + /* 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 + return le_bswap(v, 32); +#elif ULONG_MAX == UINT64_MAX + return le_bswap(v, 64); +#else +# error Unknown sizeof long +#endif } #undef le_bswap |