Hexagon HVX (target/hexagon) add Hexagon Vector eXtensions (HVX) to core

HVX is a set of wide vector instructions.  Machine state includes
    vector registers (VRegs)
    vector predicate registers (QRegs)
    temporary registers for intermediate values
    store buffer (masked stores and scatter/gather)

Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>

1 files changed, 82 insertions, 0 deletions

diff --git a/target/hexagon/mmvec/mmvec.h b/target/hexagon/mmvec/mmvec.h
new file mode 100644
index 0000000..52d4707
--- /dev/null
+++ b/target/hexagon/mmvec/mmvec.h
@@ -0,0 +1,82 @@
+/*
+ *  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/>.
+ */
+
+#ifndef HEXAGON_MMVEC_H
+#define HEXAGON_MMVEC_H
+
+#define MAX_VEC_SIZE_LOGBYTES 7
+#define MAX_VEC_SIZE_BYTES  (1 << MAX_VEC_SIZE_LOGBYTES)
+
+#define NUM_VREGS           32
+#define NUM_QREGS           4
+
+typedef uint32_t VRegMask; /* at least NUM_VREGS bits */
+typedef uint32_t QRegMask; /* at least NUM_QREGS bits */
+
+#define VECTOR_SIZE_BYTE    (fVECSIZE())
+
+typedef union {
+    uint64_t ud[MAX_VEC_SIZE_BYTES / 8];
+    int64_t   d[MAX_VEC_SIZE_BYTES / 8];
+    uint32_t uw[MAX_VEC_SIZE_BYTES / 4];
+    int32_t   w[MAX_VEC_SIZE_BYTES / 4];
+    uint16_t uh[MAX_VEC_SIZE_BYTES / 2];
+    int16_t   h[MAX_VEC_SIZE_BYTES / 2];
+    uint8_t  ub[MAX_VEC_SIZE_BYTES / 1];
+    int8_t    b[MAX_VEC_SIZE_BYTES / 1];
+} MMVector;
+
+typedef union {
+    uint64_t ud[2 * MAX_VEC_SIZE_BYTES / 8];
+    int64_t   d[2 * MAX_VEC_SIZE_BYTES / 8];
+    uint32_t uw[2 * MAX_VEC_SIZE_BYTES / 4];
+    int32_t   w[2 * MAX_VEC_SIZE_BYTES / 4];
+    uint16_t uh[2 * MAX_VEC_SIZE_BYTES / 2];
+    int16_t   h[2 * MAX_VEC_SIZE_BYTES / 2];
+    uint8_t  ub[2 * MAX_VEC_SIZE_BYTES / 1];
+    int8_t    b[2 * MAX_VEC_SIZE_BYTES / 1];
+    MMVector v[2];
+} MMVectorPair;
+
+typedef union {
+    uint64_t ud[MAX_VEC_SIZE_BYTES / 8 / 8];
+    int64_t   d[MAX_VEC_SIZE_BYTES / 8 / 8];
+    uint32_t uw[MAX_VEC_SIZE_BYTES / 4 / 8];
+    int32_t   w[MAX_VEC_SIZE_BYTES / 4 / 8];
+    uint16_t uh[MAX_VEC_SIZE_BYTES / 2 / 8];
+    int16_t   h[MAX_VEC_SIZE_BYTES / 2 / 8];
+    uint8_t  ub[MAX_VEC_SIZE_BYTES / 1 / 8];
+    int8_t    b[MAX_VEC_SIZE_BYTES / 1 / 8];
+} MMQReg;
+
+typedef struct {
+    MMVector data;
+    DECLARE_BITMAP(mask, MAX_VEC_SIZE_BYTES);
+    target_ulong va[MAX_VEC_SIZE_BYTES];
+    bool op;
+    int op_size;
+} VTCMStoreLog;
+
+
+/* Types of vector register assignment */
+typedef enum {
+    EXT_DFL,      /* Default */
+    EXT_NEW,      /* New - value used in the same packet */
+    EXT_TMP       /* Temp - value used but not stored to register */
+} VRegWriteType;
+
+#endif