Archipelago » qemu

#ifndef QEMU_OSDEP_H

#define QEMU_OSDEP_H

#include <stdarg.h>

#include <stddef.h>

#ifdef __OpenBSD__

#include <sys/types.h>

#include <sys/signal.h>

#endif

#include <sys/time.h>

#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

#ifdef CONFIG_NEED_OFFSETOF

#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)

#endif

#ifndef container_of

#define container_of(ptr, type, member) ({                      \

        const typeof(((type *) 0)->member) *__mptr = (ptr);     \

        (type *) ((char *) __mptr - offsetof(type, member));})

#endif

/* Convert from a base type to a parent type, with compile time checking.  */

#ifdef __GNUC__

#define DO_UPCAST(type, field, dev) ( __extension__ ( { \

    char __attribute__((unused)) offset_must_be_zero[ \

        -offsetof(type, field)]; \

    container_of(dev, type, field);}))

#else

#define DO_UPCAST(type, field, dev) container_of(dev, type, field)

#endif

#define typeof_field(type, field) typeof(((type *)0)->field)

#define type_check(t1,t2) ((t1*)0 - (t2*)0)

#ifndef MIN

#define MIN(a, b) (((a) < (b)) ? (a) : (b))

#endif

#ifndef MAX

#define MAX(a, b) (((a) > (b)) ? (a) : (b))

#endif

#ifndef DIV_ROUND_UP

#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))

#endif

#ifndef ARRAY_SIZE

#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))

#endif

#ifndef always_inline

#if !((__GNUC__ < 3) || defined(__APPLE__))

#ifdef __OPTIMIZE__

#define inline __attribute__ (( always_inline )) __inline__

#endif

#endif

#else

#define inline always_inline

#endif

#ifdef __i386__

#define REGPARM __attribute((regparm(3)))

#else

#define REGPARM

#endif

#define qemu_printf printf

#if defined (__GNUC__) && defined (__GNUC_MINOR__)

# define QEMU_GNUC_PREREQ(maj, min) \

         ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))

#else

# define QEMU_GNUC_PREREQ(maj, min) 0

#endif

void *qemu_memalign(size_t alignment, size_t size);

void *qemu_vmalloc(size_t size);

void qemu_vfree(void *ptr);

#define QEMU_MADV_INVALID -1

#if defined(CONFIG_MADVISE)

#define QEMU_MADV_WILLNEED  MADV_WILLNEED

#define QEMU_MADV_DONTNEED  MADV_DONTNEED

#ifdef MADV_DONTFORK

#define QEMU_MADV_DONTFORK  MADV_DONTFORK

#else

#define QEMU_MADV_DONTFORK  QEMU_MADV_INVALID

#endif

#ifdef MADV_MERGEABLE

#define QEMU_MADV_MERGEABLE MADV_MERGEABLE

#else

#define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID

#endif

#elif defined(CONFIG_POSIX_MADVISE)

#define QEMU_MADV_WILLNEED  POSIX_MADV_WILLNEED

#define QEMU_MADV_DONTNEED  POSIX_MADV_DONTNEED

#define QEMU_MADV_DONTFORK  QEMU_MADV_INVALID

#define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID

#else /* no-op */

#define QEMU_MADV_WILLNEED  QEMU_MADV_INVALID

#define QEMU_MADV_DONTNEED  QEMU_MADV_INVALID

#define QEMU_MADV_DONTFORK  QEMU_MADV_INVALID

#define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID

#endif

int qemu_madvise(void *addr, size_t len, int advice);

int qemu_create_pidfile(const char *filename);

int qemu_get_thread_id(void);

#ifdef _WIN32

static inline void qemu_timersub(const struct timeval *val1,

                                 const struct timeval *val2,

                                 struct timeval *res)

{

    res->tv_sec = val1->tv_sec - val2->tv_sec;

    if (val1->tv_usec < val2->tv_usec) {

        res->tv_sec--;

        res->tv_usec = val1->tv_usec - val2->tv_usec + 1000 * 1000;

    } else {

        res->tv_usec = val1->tv_usec - val2->tv_usec;

    }

}

#else

#define qemu_timersub timersub

#endif

#endif