| #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); |
| |
| #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 |