misc: move include files to include/qemu/

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 240 insertions, 0 deletions

diff --git a/include/qemu/host-utils.h b/include/qemu/host-utils.h
new file mode 100644
index 0000000000..81c9a754ae
--- /dev/null
+++ b/include/qemu/host-utils.h
@@ -0,0 +1,240 @@
+/*
+ * Utility compute operations used by translated code.
+ *
+ * Copyright (c) 2007 Thiemo Seufer
+ * Copyright (c) 2007 Jocelyn Mayer
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef HOST_UTILS_H
+#define HOST_UTILS_H 1
+
+#include "qemu/compiler.h"   /* QEMU_GNUC_PREREQ */
+
+#if defined(__x86_64__)
+#define __HAVE_FAST_MULU64__
+static inline void mulu64(uint64_t *plow, uint64_t *phigh,
+                          uint64_t a, uint64_t b)
+{
+    __asm__ ("mul %0\n\t"
+             : "=d" (*phigh), "=a" (*plow)
+             : "a" (a), "0" (b));
+}
+#define __HAVE_FAST_MULS64__
+static inline void muls64(uint64_t *plow, uint64_t *phigh,
+                          int64_t a, int64_t b)
+{
+    __asm__ ("imul %0\n\t"
+             : "=d" (*phigh), "=a" (*plow)
+             : "a" (a), "0" (b));
+}
+#else
+void muls64(uint64_t *phigh, uint64_t *plow, int64_t a, int64_t b);
+void mulu64(uint64_t *phigh, uint64_t *plow, uint64_t a, uint64_t b);
+#endif
+
+/* Binary search for leading zeros.  */
+
+static inline int clz32(uint32_t val)
+{
+#if QEMU_GNUC_PREREQ(3, 4)
+    if (val)
+        return __builtin_clz(val);
+    else
+        return 32;
+#else
+    int cnt = 0;
+
+    if (!(val & 0xFFFF0000U)) {
+        cnt += 16;
+        val <<= 16;
+    }
+    if (!(val & 0xFF000000U)) {
+        cnt += 8;
+        val <<= 8;
+    }
+    if (!(val & 0xF0000000U)) {
+        cnt += 4;
+        val <<= 4;
+    }
+    if (!(val & 0xC0000000U)) {
+        cnt += 2;
+        val <<= 2;
+    }
+    if (!(val & 0x80000000U)) {
+        cnt++;
+        val <<= 1;
+    }
+    if (!(val & 0x80000000U)) {
+        cnt++;
+    }
+    return cnt;
+#endif
+}
+
+static inline int clo32(uint32_t val)
+{
+    return clz32(~val);
+}
+
+static inline int clz64(uint64_t val)
+{
+#if QEMU_GNUC_PREREQ(3, 4)
+    if (val)
+        return __builtin_clzll(val);
+    else
+        return 64;
+#else
+    int cnt = 0;
+
+    if (!(val >> 32)) {
+        cnt += 32;
+    } else {
+        val >>= 32;
+    }
+
+    return cnt + clz32(val);
+#endif
+}
+
+static inline int clo64(uint64_t val)
+{
+    return clz64(~val);
+}
+
+static inline int ctz32(uint32_t val)
+{
+#if QEMU_GNUC_PREREQ(3, 4)
+    if (val)
+        return __builtin_ctz(val);
+    else
+        return 32;
+#else
+    int cnt;
+
+    cnt = 0;
+    if (!(val & 0x0000FFFFUL)) {
+        cnt += 16;
+        val >>= 16;
+    }
+    if (!(val & 0x000000FFUL)) {
+        cnt += 8;
+        val >>= 8;
+    }
+    if (!(val & 0x0000000FUL)) {
+        cnt += 4;
+        val >>= 4;
+    }
+    if (!(val & 0x00000003UL)) {
+        cnt += 2;
+        val >>= 2;
+    }
+    if (!(val & 0x00000001UL)) {
+        cnt++;
+        val >>= 1;
+    }
+    if (!(val & 0x00000001UL)) {
+        cnt++;
+    }
+
+    return cnt;
+#endif
+}
+
+static inline int cto32(uint32_t val)
+{
+    return ctz32(~val);
+}
+
+static inline int ctz64(uint64_t val)
+{
+#if QEMU_GNUC_PREREQ(3, 4)
+    if (val)
+        return __builtin_ctzll(val);
+    else
+        return 64;
+#else
+    int cnt;
+
+    cnt = 0;
+    if (!((uint32_t)val)) {
+        cnt += 32;
+        val >>= 32;
+    }
+
+    return cnt + ctz32(val);
+#endif
+}
+
+static inline int cto64(uint64_t val)
+{
+    return ctz64(~val);
+}
+
+static inline int ctpop8(uint8_t val)
+{
+    val = (val & 0x55) + ((val >> 1) & 0x55);
+    val = (val & 0x33) + ((val >> 2) & 0x33);
+    val = (val & 0x0f) + ((val >> 4) & 0x0f);
+
+    return val;
+}
+
+static inline int ctpop16(uint16_t val)
+{
+    val = (val & 0x5555) + ((val >> 1) & 0x5555);
+    val = (val & 0x3333) + ((val >> 2) & 0x3333);
+    val = (val & 0x0f0f) + ((val >> 4) & 0x0f0f);
+    val = (val & 0x00ff) + ((val >> 8) & 0x00ff);
+
+    return val;
+}
+
+static inline int ctpop32(uint32_t val)
+{
+#if QEMU_GNUC_PREREQ(3, 4)
+    return __builtin_popcount(val);
+#else
+    val = (val & 0x55555555) + ((val >>  1) & 0x55555555);
+    val = (val & 0x33333333) + ((val >>  2) & 0x33333333);
+    val = (val & 0x0f0f0f0f) + ((val >>  4) & 0x0f0f0f0f);
+    val = (val & 0x00ff00ff) + ((val >>  8) & 0x00ff00ff);
+    val = (val & 0x0000ffff) + ((val >> 16) & 0x0000ffff);
+
+    return val;
+#endif
+}
+
+static inline int ctpop64(uint64_t val)
+{
+#if QEMU_GNUC_PREREQ(3, 4)
+    return __builtin_popcountll(val);
+#else
+    val = (val & 0x5555555555555555ULL) + ((val >>  1) & 0x5555555555555555ULL);
+    val = (val & 0x3333333333333333ULL) + ((val >>  2) & 0x3333333333333333ULL);
+    val = (val & 0x0f0f0f0f0f0f0f0fULL) + ((val >>  4) & 0x0f0f0f0f0f0f0f0fULL);
+    val = (val & 0x00ff00ff00ff00ffULL) + ((val >>  8) & 0x00ff00ff00ff00ffULL);
+    val = (val & 0x0000ffff0000ffffULL) + ((val >> 16) & 0x0000ffff0000ffffULL);
+    val = (val & 0x00000000ffffffffULL) + ((val >> 32) & 0x00000000ffffffffULL);
+
+    return val;
+#endif
+}
+
+#endif