X-Git-Url: https://repo.jachan.dev/qemu.git/blobdiff_plain/ca10f86763f58b7b3667e2ca7d26db3dc810eb20..4b31713dc4fa81e9026413acc6825073b92453bc:/osdep.h

diff --git a/osdep.h b/osdep.h
index 62de457048..75b581630f 100644
--- a/osdep.h
+++ b/osdep.h
@@ -2,6 +2,15 @@
 #define QEMU_OSDEP_H
 
 #include <stdarg.h>
+#include <stddef.h>
+#ifdef __OpenBSD__
+#include <sys/types.h>
+#include <sys/signal.h>
+#endif
+
+#ifndef _WIN32
+#include <sys/time.h>
+#endif
 
 #ifndef glue
 #define xglue(x, y) x ## y
@@ -19,6 +28,28 @@
 #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
@@ -31,13 +62,14 @@
 #endif
 
 #ifndef always_inline
-#if (__GNUC__ < 3) || defined(__APPLE__)
-#define always_inline inline
-#else
-#define always_inline __attribute__ (( always_inline )) __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)))
@@ -47,6 +79,13 @@
 
 #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);