target/hexagon/cpu_bits.h

   1 /*
   2  *  Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
   3  *
   4  *  This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License as published by
   6  *  the Free Software Foundation; either version 2 of the License, or
   7  *  (at your option) any later version.
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License
  15  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #ifndef HEXAGON_CPU_BITS_H
  19 #define HEXAGON_CPU_BITS_H
  20
  21 #include "qemu/bitops.h"
  22
  23 #define HEX_EXCP_FETCH_NO_UPAGE  0x012
  24 #define HEX_EXCP_INVALID_PACKET  0x015
  25 #define HEX_EXCP_INVALID_OPCODE  0x015
  26 #define HEX_EXCP_PRIV_NO_UREAD   0x024
  27 #define HEX_EXCP_PRIV_NO_UWRITE  0x025
  28
  29 #define HEX_EXCP_TRAP0           0x172
  30
  31 #define PACKET_WORDS_MAX         4
  32
  33 static inline uint32_t parse_bits(uint32_t encoding)
  34 {
  35     /* The parse bits are [15:14] */
  36     return extract32(encoding, 14, 2);
  37 }
  38
  39 static inline uint32_t iclass_bits(uint32_t encoding)
  40 {
  41     /* The instruction class is encoded in bits [31:28] */
  42     uint32_t iclass = extract32(encoding, 28, 4);
  43     /* If parse bits are zero, this is a duplex */
  44     if (parse_bits(encoding) == 0) {
  45         iclass += 16;
  46     }
  47     return iclass;
  48 }
  49
  50 static inline int is_packet_end(uint32_t endocing)
  51 {
  52     uint32_t bits = parse_bits(endocing);
  53     return ((bits == 0x3) || (bits == 0x0));
  54 }
  55
  56 int disassemble_hexagon(uint32_t *words, int nwords, bfd_vma pc, GString *buf);
  57
  58 #endif