#define QEMU_OSDEP_H
#include <stdarg.h>
+#include <stddef.h>
+#ifdef __OpenBSD__
+#include <sys/types.h>
+#include <sys/signal.h>
+#endif
-int qemu_vsnprintf(char *buf, int buflen, const char *fmt, va_list args);
-void qemu_vprintf(const char *fmt, va_list ap);
-void qemu_printf(const char *fmt, ...);
+#include <sys/time.h>
-void *qemu_malloc(size_t size);
-void *qemu_mallocz(size_t size);
-void qemu_free(void *ptr);
-char *qemu_strdup(const char *str);
+#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
-void *get_mmap_addr(unsigned long size);
+#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
-/* specific kludges for OS compatibility (should be moved elsewhere) */
-#if defined(__i386__) && !defined(CONFIG_SOFTMMU) && !defined(CONFIG_USER_ONLY)
+#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
-/* disabled pthread version of longjmp which prevent us from using an
- alternative signal stack */
-extern void __longjmp(jmp_buf env, int val);
-#define longjmp __longjmp
+/* 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
-#include <signal.h>
+#define typeof_field(type, field) typeof(((type *)0)->field)
+#define type_check(t1,t2) ((t1*)0 - (t2*)0)
-/* NOTE: it works only because the glibc sigset_t is >= kernel sigset_t */
-struct qemu_sigaction {
- union {
- void (*_sa_handler)(int);
- void (*_sa_sigaction)(int, struct siginfo *, void *);
- } _u;
- unsigned long sa_flags;
- void (*sa_restorer)(void);
- sigset_t sa_mask; /* mask last for extensibility */
-};
+#ifndef MIN
+#define MIN(a, b) (((a) < (b)) ? (a) : (b))
+#endif
+#ifndef MAX
+#define MAX(a, b) (((a) > (b)) ? (a) : (b))
+#endif
-int qemu_sigaction(int signum, const struct qemu_sigaction *act,
- struct qemu_sigaction *oldact);
+#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
+
+int qemu_daemon(int nochdir, int noclose);
+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);
+
+#if defined(__HAIKU__) && defined(__i386__)
+#define FMT_pid "%ld"
+#else
+#define FMT_pid "%d"
+#endif
-#undef sigaction
-#undef sa_handler
-#undef sa_sigaction
-#define sigaction qemu_sigaction
-#define sa_handler _u._sa_handler
-#define sa_sigaction _u._sa_sigaction
+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
projects / qemu.git / blobdiff