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osdep.h 1.99 KB
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#ifndef QEMU_OSDEP_H
#define QEMU_OSDEP_H

#include <stdarg.h>
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#ifdef __OpenBSD__
#include <sys/types.h>
#include <sys/signal.h>
#endif
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#ifndef _WIN32
#include <sys/time.h>
#endif
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#ifndef glue
#define xglue(x, y) x ## y
#define glue(x, y) xglue(x, y)
#define stringify(s)	tostring(s)
#define tostring(s)	#s
#endif

#ifndef likely
#if __GNUC__ < 3
#define __builtin_expect(x, n) (x)
#endif

#define likely(x)   __builtin_expect(!!(x), 1)
#define unlikely(x)   __builtin_expect(!!(x), 0)
#endif
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#ifndef offsetof
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
#endif
#ifndef container_of
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#define container_of(ptr, type, member) ({                      \
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        const typeof(((type *) 0)->member) *__mptr = (ptr);     \
        (type *) ((char *) __mptr - offsetof(type, member));})
#endif
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#ifndef MIN
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#endif
#ifndef MAX
#define MAX(a, b) (((a) > (b)) ? (a) : (b))
#endif
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#ifndef ARRAY_SIZE
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#endif
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#ifndef always_inline
#if (__GNUC__ < 3) || defined(__APPLE__)
#define always_inline inline
#else
#define always_inline __attribute__ (( always_inline )) __inline__
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#ifdef __OPTIMIZE__
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#define inline always_inline
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#endif
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#endif
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#else
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#define inline always_inline
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#endif
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#ifdef __i386__
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#define REGPARM __attribute((regparm(3)))
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#else
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#define REGPARM
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#endif
bellard authored
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#define qemu_printf printf
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#if defined (__GNUC__) && defined (__GNUC_MINOR__)
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# define QEMU_GNUC_PREREQ(maj, min) \
         ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
#else
# define QEMU_GNUC_PREREQ(maj, min) 0
#endif
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void *qemu_memalign(size_t alignment, size_t size);
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void *qemu_vmalloc(size_t size);
void qemu_vfree(void *ptr);
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int qemu_create_pidfile(const char *filename);
pbrook authored
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#ifdef _WIN32
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int ffs(int i);
pbrook authored
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typedef struct {
    long tv_sec;
    long tv_usec;
} qemu_timeval;
int qemu_gettimeofday(qemu_timeval *tp);
#else
typedef struct timeval qemu_timeval;
#define qemu_gettimeofday(tp) gettimeofday(tp, NULL);
#endif /* !_WIN32 */
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#endif