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Move HOST_LONG_BITS from qemu-common.h to qemu/osdep.h

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qemu-common.h should only be included by .c files.  Its file comment
explains why: "No header file should depend on qemu-common.h, as this
would easily lead to circular header dependencies."

One of the reasons for headers to include it is HOST_LONG_BITS.  Move
that to its more natural home qemu/osdep.h, to facilitate removing
these ill-advised includes later on.

This also lets us use HOST_LONG_BITS in bswap.h instead of duplicating
its definition there to avoid cyclic inclusion.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Markus Armbruster 2016-03-11 13:41:13 +01:00 committed by Paolo Bonzini
parent a7c4d9c7ca
commit a813963216
3 changed files with 11 additions and 13 deletions
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9
include/qemu-common.h
View File

@ -23,15 +23,6 @@
#include "qemu/option.h"
#include "qemu/host-utils.h"
/* HOST_LONG_BITS is the size of a native pointer in bits. */
#if UINTPTR_MAX == UINT32_MAX
# define HOST_LONG_BITS 32
#elif UINTPTR_MAX == UINT64_MAX
# define HOST_LONG_BITS 64
#else
# error Unknown pointer size
#endif
void cpu_ticks_init(void);
/* icount */

6
include/qemu/bswap.h
View File

@ -419,11 +419,9 @@ 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

9
include/qemu/osdep.h
View File

@ -127,6 +127,15 @@ extern int daemon(int, int);
#define TIME_MAX LONG_MAX
#endif
/* HOST_LONG_BITS is the size of a native pointer in bits. */
#if UINTPTR_MAX == UINT32_MAX
# define HOST_LONG_BITS 32
#elif UINTPTR_MAX == UINT64_MAX
# define HOST_LONG_BITS 64
#else
# error Unknown pointer size
#endif
#ifndef MIN
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#endif