diff options
Diffstat (limited to 'include/qemu/osdep.h')
| -rw-r--r-- | include/qemu/osdep.h | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h index 5bb374c3c6..408783f532 100644 --- a/include/qemu/osdep.h +++ b/include/qemu/osdep.h @@ -7,8 +7,10 @@ * * To avoid getting into possible circular include dependencies, this * file should not include any other QEMU headers, with the exceptions - * of config-host.h, compiler.h, os-posix.h and os-win32.h, all of which - * are doing a similar job to this file and are under similar constraints. + * of config-host.h, config-target.h, qemu/compiler.h, + * sysemu/os-posix.h, sysemu/os-win32.h, glib-compat.h and + * qemu/typedefs.h, all of which are doing a similar job to this file + * and are under similar constraints. * * This header also contains prototypes for functions defined in * os-*.c and util/oslib-*.c; those would probably be better split @@ -101,8 +103,7 @@ extern int daemon(int, int); #endif #include "glib-compat.h" - -#include "qapi/error.h" +#include "qemu/typedefs.h" #ifndef O_LARGEFILE #define O_LARGEFILE 0 @@ -129,6 +130,15 @@ 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 @@ -142,6 +152,12 @@ extern int daemon(int, int); #define MIN_NON_ZERO(a, b) (((a) != 0 && (a) < (b)) ? (a) : (b)) #endif +/* Round number down to multiple */ +#define QEMU_ALIGN_DOWN(n, m) ((n) / (m) * (m)) + +/* Round number up to multiple */ +#define QEMU_ALIGN_UP(n, m) QEMU_ALIGN_DOWN((n) + (m) - 1, (m)) + #ifndef ROUND_UP #define ROUND_UP(n,d) (((n) + (d) - 1) & -(d)) #endif |