xref: /openbmc/qemu/target/hexagon/cpu_bits.h (revision b4b9a0e32f93c0700f46617524317b0580126592)
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 bool 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
59