virtio-balloon: cleanup: init and exit function.

[qemu.git] / include / qemu-common.h

diff --git a/include/qemu-common.h b/include/qemu-common.h
index 7754ee2fcc6fc44df3f14a758212c8d57ac96281..31fff22f321058800e3b9ed906a7a9be861c991e 100644 (file)
--- a/include/qemu-common.h
+++ b/include/qemu-common.h
@@ -40,7 +40,7 @@
 #include <sys/time.h>
 #include <assert.h>
 #include <signal.h>
-#include <glib.h>
+#include "glib-compat.h"
 
 #ifdef _WIN32
 #include "sysemu/os-win32.h"
@@ -448,4 +448,35 @@ int uleb128_decode_small(const uint8_t *in, uint32_t *n);
 
 void hexdump(const char *buf, FILE *fp, const char *prefix, size_t size);
 
+/* vector definitions */
+#ifdef __ALTIVEC__
+#include <altivec.h>
+#define VECTYPE        vector unsigned char
+#define SPLAT(p)       vec_splat(vec_ld(0, p), 0)
+#define ALL_EQ(v1, v2) vec_all_eq(v1, v2)
+/* altivec.h may redefine the bool macro as vector type.
+ * Reset it to POSIX semantics. */
+#undef bool
+#define bool _Bool
+#elif defined __SSE2__
+#include <emmintrin.h>
+#define VECTYPE        __m128i
+#define SPLAT(p)       _mm_set1_epi8(*(p))
+#define ALL_EQ(v1, v2) (_mm_movemask_epi8(_mm_cmpeq_epi8(v1, v2)) == 0xFFFF)
+#else
+#define VECTYPE        unsigned long
+#define SPLAT(p)       (*(p) * (~0UL / 255))
+#define ALL_EQ(v1, v2) ((v1) == (v2))
+#endif
+
+#define BUFFER_FIND_NONZERO_OFFSET_UNROLL_FACTOR 8
+static inline bool
+can_use_buffer_find_nonzero_offset(const void *buf, size_t len)
+{
+    return (len % (BUFFER_FIND_NONZERO_OFFSET_UNROLL_FACTOR
+                   * sizeof(VECTYPE)) == 0
+            && ((uintptr_t) buf) % sizeof(VECTYPE) == 0);
+}
+size_t buffer_find_nonzero_offset(const void *buf, size_t len);
+
 #endif