1 files changed, 33 insertions, 0 deletions
diff --git a/qemu-common.h b/qemu-common.h
index 2498769efa..21fc3a5308 100644
--- a/qemu-common.h
+++ b/qemu-common.h
@@ -81,6 +81,9 @@ struct iovec {
 #define GCC_FMT_ATTR(n, m)
 #endif
 
+typedef int (*fprintf_function)(FILE *f, const char *fmt, ...)
+    GCC_FMT_ATTR(2, 3);
+
 #ifdef _WIN32
 #define fsync _commit
 #define lseek _lseeki64
@@ -167,6 +170,12 @@ const char *path(const char *pathname);
 #define qemu_isascii(c)		isascii((unsigned char)(c))
 #define qemu_toascii(c)		toascii((unsigned char)(c))
 
+#ifdef _WIN32
+/* ffs() in oslib-win32.c for WIN32, strings.h for the rest of the world */
+int ffs(int i);
+#endif
+
+void *qemu_oom_check(void *ptr);
 void *qemu_malloc(size_t size);
 void *qemu_realloc(void *ptr, size_t size);
 void *qemu_mallocz(size_t size);
@@ -313,6 +322,30 @@ static inline uint8_t from_bcd(uint8_t val)
     return ((val >> 4) * 10) + (val & 0x0f);
 }
 
+/* compute with 96 bit intermediate result: (a*b)/c */
+static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
+{
+    union {
+        uint64_t ll;
+        struct {
+#ifdef HOST_WORDS_BIGENDIAN
+            uint32_t high, low;
+#else
+            uint32_t low, high;
+#endif
+        } l;
+    } u, res;
+    uint64_t rl, rh;
+
+    u.ll = a;
+    rl = (uint64_t)u.l.low * (uint64_t)b;
+    rh = (uint64_t)u.l.high * (uint64_t)b;
+    rh += (rl >> 32);
+    res.l.high = rh / c;
+    res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
+    return res.ll;
+}
+
 #include "module.h"
 
 #endif