new file mode 100644
@@ -0,0 +1,73 @@
+/*
+ * 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"
+
+void helper_exception(CPUTLGState *env, uint32_t excp)
+{
+ CPUState *cs = CPU(tilegx_env_get_cpu(env));
+
+ cs->exception_index = excp;
+ cpu_loop_exit(cs);
+}
+
+uint64_t helper_cntlz(uint64_t arg)
+{
+ return clz64(arg);
+}
+
+uint64_t helper_cnttz(uint64_t arg)
+{
+ return ctz64(arg);
+}
+
+/*
+ Functional Description
+ uint64_t a = rf[SrcA];
+ uint64_t b = rf[SrcB];
+ uint64_t d = rf[Dest];
+ uint64_t output = 0;
+ unsigned int counter;
+ for (counter = 0; counter < (WORD_SIZE / BYTE_SIZE); counter++)
+ {
+ int sel = getByte (b, counter) & 0xf;
+ uint8_t byte = (sel < 8) ? getByte (d, sel) : getByte (a, (sel - 8));
+ output = setByte (output, counter, byte);
+ }
+ rf[Dest] = output;
+ */
+uint64_t helper_shufflebytes(uint64_t rdst, uint64_t rsrc, uint64_t rsrcb)
+{
+ uint64_t vdst = 0;
+ int count, sel;
+
+ for (count = 0; count < 8; count++) {
+ sel = (rsrcb >> (count * 8)) & 0xf;
+ if (sel < 8) {
+ vdst |= ((rdst >> (8 * sel)) & 0xff) << (count * 8);
+ } else {
+ vdst |= ((rsrc >> (8 * (8 - sel))) & 0xff) << (count * 8);
+ }
+ }
+
+ return vdst;
+}
new file mode 100644
@@ -0,0 +1,4 @@
+DEF_HELPER_2(exception, noreturn, env, i32)
+DEF_HELPER_FLAGS_1(cntlz, TCG_CALL_NO_RWG_SE, i64, i64)
+DEF_HELPER_FLAGS_1(cnttz, TCG_CALL_NO_RWG_SE, i64, i64)
+DEF_HELPER_FLAGS_3(shufflebytes, TCG_CALL_NO_RWG_SE, i64, i64, i64, i64)
The related instructions are exception, cntlz, cnttz, and shufflebytes. Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> --- target-tilegx/helper.c | 73 ++++++++++++++++++++++++++++++++++++++++++++++++++ target-tilegx/helper.h | 4 +++ 2 files changed, 77 insertions(+) create mode 100644 target-tilegx/helper.c create mode 100644 target-tilegx/helper.h