1 files changed, 73 insertions, 0 deletions
diff --git a/target/hexagon/iclass.c b/target/hexagon/iclass.c
new file mode 100644
index 0000000000..378d8a6a75
--- /dev/null
+++ b/target/hexagon/iclass.c
@@ -0,0 +1,73 @@
+/*
+ *  Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "iclass.h"
+
+static const SlotMask iclass_info[] = {
+
+#define DEF_PP_ICLASS32(TYPE, SLOTS, UNITS) \
+    [ICLASS_FROM_TYPE(TYPE)] = SLOTS_##SLOTS,
+#define DEF_EE_ICLASS32(TYPE, SLOTS, UNITS) \
+    [ICLASS_FROM_TYPE(TYPE)] = SLOTS_##SLOTS,
+#include "imported/iclass.def"
+#undef DEF_PP_ICLASS32
+#undef DEF_EE_ICLASS32
+};
+
+SlotMask find_iclass_slots(Opcode opcode, int itype)
+{
+    /* There are some exceptions to what the iclass dictates */
+    if (GET_ATTRIB(opcode, A_ICOP)) {
+        return SLOTS_2;
+    } else if (GET_ATTRIB(opcode, A_RESTRICT_SLOT0ONLY)) {
+        return SLOTS_0;
+    } else if (GET_ATTRIB(opcode, A_RESTRICT_SLOT1ONLY)) {
+        return SLOTS_1;
+    } else if (GET_ATTRIB(opcode, A_RESTRICT_SLOT2ONLY)) {
+        return SLOTS_2;
+    } else if (GET_ATTRIB(opcode, A_RESTRICT_SLOT3ONLY)) {
+        return SLOTS_3;
+    } else if (GET_ATTRIB(opcode, A_COF) &&
+               GET_ATTRIB(opcode, A_INDIRECT) &&
+               !GET_ATTRIB(opcode, A_MEMLIKE) &&
+               !GET_ATTRIB(opcode, A_MEMLIKE_PACKET_RULES)) {
+        return SLOTS_2;
+    } else if (GET_ATTRIB(opcode, A_RESTRICT_NOSLOT1)) {
+        return SLOTS_0;
+    } else if ((opcode == J2_trap0) ||
+               (opcode == Y2_isync) ||
+               (opcode == J2_pause) || (opcode == J4_hintjumpr)) {
+        return SLOTS_2;
+    } else if ((itype == ICLASS_V2LDST) && (GET_ATTRIB(opcode, A_STORE))) {
+        return SLOTS_01;
+    } else if ((itype == ICLASS_V2LDST) && (!GET_ATTRIB(opcode, A_STORE))) {
+        return SLOTS_01;
+    } else if (GET_ATTRIB(opcode, A_CRSLOT23)) {
+        return SLOTS_23;
+    } else if (GET_ATTRIB(opcode, A_RESTRICT_PREFERSLOT0)) {
+        return SLOTS_0;
+    } else if (GET_ATTRIB(opcode, A_SUBINSN)) {
+        return SLOTS_01;
+    } else if (GET_ATTRIB(opcode, A_CALL)) {
+        return SLOTS_23;
+    } else if ((opcode == J4_jumpseti) || (opcode == J4_jumpsetr)) {
+        return SLOTS_23;
+    } else {
+        return iclass_info[itype];
+    }
+}