1 files changed, 257 insertions, 0 deletions
diff --git a/target-alpha/int_helper.c b/target-alpha/int_helper.c
new file mode 100644
index 0000000000..79c0cfe54c
--- /dev/null
+++ b/target-alpha/int_helper.c
@@ -0,0 +1,257 @@
+/*
+ *  Helpers for integer and multimedia instructions.
+ *
+ *  Copyright (c) 2007 Jocelyn Mayer
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "cpu.h"
+#include "helper.h"
+#include "host-utils.h"
+
+
+uint64_t helper_umulh(uint64_t op1, uint64_t op2)
+{
+    uint64_t tl, th;
+    mulu64(&tl, &th, op1, op2);
+    return th;
+}
+
+uint64_t helper_ctpop(uint64_t arg)
+{
+    return ctpop64(arg);
+}
+
+uint64_t helper_ctlz(uint64_t arg)
+{
+    return clz64(arg);
+}
+
+uint64_t helper_cttz(uint64_t arg)
+{
+    return ctz64(arg);
+}
+
+static inline uint64_t byte_zap(uint64_t op, uint8_t mskb)
+{
+    uint64_t mask;
+
+    mask = 0;
+    mask |= ((mskb >> 0) & 1) * 0x00000000000000FFULL;
+    mask |= ((mskb >> 1) & 1) * 0x000000000000FF00ULL;
+    mask |= ((mskb >> 2) & 1) * 0x0000000000FF0000ULL;
+    mask |= ((mskb >> 3) & 1) * 0x00000000FF000000ULL;
+    mask |= ((mskb >> 4) & 1) * 0x000000FF00000000ULL;
+    mask |= ((mskb >> 5) & 1) * 0x0000FF0000000000ULL;
+    mask |= ((mskb >> 6) & 1) * 0x00FF000000000000ULL;
+    mask |= ((mskb >> 7) & 1) * 0xFF00000000000000ULL;
+
+    return op & ~mask;
+}
+
+uint64_t helper_zap(uint64_t val, uint64_t mask)
+{
+    return byte_zap(val, mask);
+}
+
+uint64_t helper_zapnot(uint64_t val, uint64_t mask)
+{
+    return byte_zap(val, ~mask);
+}
+
+uint64_t helper_cmpbge(uint64_t op1, uint64_t op2)
+{
+    uint8_t opa, opb, res;
+    int i;
+
+    res = 0;
+    for (i = 0; i < 8; i++) {
+        opa = op1 >> (i * 8);
+        opb = op2 >> (i * 8);
+        if (opa >= opb) {
+            res |= 1 << i;
+        }
+    }
+    return res;
+}
+
+uint64_t helper_minub8(uint64_t op1, uint64_t op2)
+{
+    uint64_t res = 0;
+    uint8_t opa, opb, opr;
+    int i;
+
+    for (i = 0; i < 8; ++i) {
+        opa = op1 >> (i * 8);
+        opb = op2 >> (i * 8);
+        opr = opa < opb ? opa : opb;
+        res |= (uint64_t)opr << (i * 8);
+    }
+    return res;
+}
+
+uint64_t helper_minsb8(uint64_t op1, uint64_t op2)
+{
+    uint64_t res = 0;
+    int8_t opa, opb;
+    uint8_t opr;
+    int i;
+
+    for (i = 0; i < 8; ++i) {
+        opa = op1 >> (i * 8);
+        opb = op2 >> (i * 8);
+        opr = opa < opb ? opa : opb;
+        res |= (uint64_t)opr << (i * 8);
+    }
+    return res;
+}
+
+uint64_t helper_minuw4(uint64_t op1, uint64_t op2)
+{
+    uint64_t res = 0;
+    uint16_t opa, opb, opr;
+    int i;
+
+    for (i = 0; i < 4; ++i) {
+        opa = op1 >> (i * 16);
+        opb = op2 >> (i * 16);
+        opr = opa < opb ? opa : opb;
+        res |= (uint64_t)opr << (i * 16);
+    }
+    return res;
+}
+
+uint64_t helper_minsw4(uint64_t op1, uint64_t op2)
+{
+    uint64_t res = 0;
+    int16_t opa, opb;
+    uint16_t opr;
+    int i;
+
+    for (i = 0; i < 4; ++i) {
+        opa = op1 >> (i * 16);
+        opb = op2 >> (i * 16);
+        opr = opa < opb ? opa : opb;
+        res |= (uint64_t)opr << (i * 16);
+    }
+    return res;
+}
+
+uint64_t helper_maxub8(uint64_t op1, uint64_t op2)
+{
+    uint64_t res = 0;
+    uint8_t opa, opb, opr;
+    int i;
+
+    for (i = 0; i < 8; ++i) {
+        opa = op1 >> (i * 8);
+        opb = op2 >> (i * 8);
+        opr = opa > opb ? opa : opb;
+        res |= (uint64_t)opr << (i * 8);
+    }
+    return res;
+}
+
+uint64_t helper_maxsb8(uint64_t op1, uint64_t op2)
+{
+    uint64_t res = 0;
+    int8_t opa, opb;
+    uint8_t opr;
+    int i;
+
+    for (i = 0; i < 8; ++i) {
+        opa = op1 >> (i * 8);
+        opb = op2 >> (i * 8);
+        opr = opa > opb ? opa : opb;
+        res |= (uint64_t)opr << (i * 8);
+    }
+    return res;
+}
+
+uint64_t helper_maxuw4(uint64_t op1, uint64_t op2)
+{
+    uint64_t res = 0;
+    uint16_t opa, opb, opr;
+    int i;
+
+    for (i = 0; i < 4; ++i) {
+        opa = op1 >> (i * 16);
+        opb = op2 >> (i * 16);
+        opr = opa > opb ? opa : opb;
+        res |= (uint64_t)opr << (i * 16);
+    }
+    return res;
+}
+
+uint64_t helper_maxsw4(uint64_t op1, uint64_t op2)
+{
+    uint64_t res = 0;
+    int16_t opa, opb;
+    uint16_t opr;
+    int i;
+
+    for (i = 0; i < 4; ++i) {
+        opa = op1 >> (i * 16);
+        opb = op2 >> (i * 16);
+        opr = opa > opb ? opa : opb;
+        res |= (uint64_t)opr << (i * 16);
+    }
+    return res;
+}
+
+uint64_t helper_perr(uint64_t op1, uint64_t op2)
+{
+    uint64_t res = 0;
+    uint8_t opa, opb, opr;
+    int i;
+
+    for (i = 0; i < 8; ++i) {
+        opa = op1 >> (i * 8);
+        opb = op2 >> (i * 8);
+        if (opa >= opb) {
+            opr = opa - opb;
+        } else {
+            opr = opb - opa;
+        }
+        res += opr;
+    }
+    return res;
+}
+
+uint64_t helper_pklb(uint64_t op1)
+{
+    return (op1 & 0xff) | ((op1 >> 24) & 0xff00);
+}
+
+uint64_t helper_pkwb(uint64_t op1)
+{
+    return ((op1 & 0xff)
+            | ((op1 >> 8) & 0xff00)
+            | ((op1 >> 16) & 0xff0000)
+            | ((op1 >> 24) & 0xff000000));
+}
+
+uint64_t helper_unpkbl(uint64_t op1)
+{
+    return (op1 & 0xff) | ((op1 & 0xff00) << 24);
+}
+
+uint64_t helper_unpkbw(uint64_t op1)
+{
+    return ((op1 & 0xff)
+            | ((op1 & 0xff00) << 8)
+            | ((op1 & 0xff0000) << 16)
+            | ((op1 & 0xff000000) << 24));
+}