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authorRichard Henderson <rth@twiddle.net>2015-08-24 08:56:45 -0700
committerRichard Henderson <rth@twiddle.net>2015-09-15 07:45:34 -0700
commit461aa6783eec27f209b026c6647fc7a83b2997cd (patch)
tree0940f302751c63742dddff30898937a8c375392d /target-tilegx/simd_helper.c
parent3be19e8c83949b62895dd27866e26a1bf806ad56 (diff)
downloadqemu-arm-461aa6783eec27f209b026c6647fc7a83b2997cd.tar.gz
target-tilegx: Handle v1shl, v1shru, v1shrs
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-tilegx/simd_helper.c')
-rw-r--r--target-tilegx/simd_helper.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/target-tilegx/simd_helper.c b/target-tilegx/simd_helper.c
new file mode 100644
index 0000000000..b9319292f3
--- /dev/null
+++ b/target-tilegx/simd_helper.c
@@ -0,0 +1,55 @@
+/*
+ * QEMU TILE-Gx helpers
+ *
+ * Copyright (c) 2015 Chen Gang
+ *
+ * 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 2.1 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/lgpl-2.1.html>
+ */
+
+#include "cpu.h"
+#include "qemu-common.h"
+#include "exec/helper-proto.h"
+
+
+uint64_t helper_v1shl(uint64_t a, uint64_t b)
+{
+ uint64_t m;
+
+ b &= 7;
+ m = 0x0101010101010101ULL * (0xff >> b);
+ return (a & m) << b;
+}
+
+uint64_t helper_v1shru(uint64_t a, uint64_t b)
+{
+ uint64_t m;
+
+ b &= 7;
+ m = 0x0101010101010101ULL * ((0xff << b) & 0xff);
+ return (a & m) >> b;
+}
+
+uint64_t helper_v1shrs(uint64_t a, uint64_t b)
+{
+ uint64_t r = 0;
+ int i;
+
+ b &= 7;
+ for (i = 0; i < 64; i += 8) {
+ int64_t ae = (int8_t)(a >> i);
+ r |= ((ae >> b) & 0xff) << i;
+ }
+ return r;
+}