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 PCALIGN 4
  24 #define PCALIGN_MASK (PCALIGN - 1)
  25
  26 #define HEX_EXCP_FETCH_NO_UPAGE  0x012
  27 #define HEX_EXCP_INVALID_PACKET  0x015
  28 #define HEX_EXCP_INVALID_OPCODE  0x015
  29 #define HEX_EXCP_PC_NOT_ALIGNED  0x01e
  30 #define HEX_EXCP_PRIV_NO_UREAD   0x024
  31 #define HEX_EXCP_PRIV_NO_UWRITE  0x025
  32
  33 #define HEX_EXCP_TRAP0           0x172
  34
  35 #define PACKET_WORDS_MAX         4
  36
  37 static inline uint32_t parse_bits(uint32_t encoding)
  38 {
  39     /* The parse bits are [15:14] */
  40     return extract32(encoding, 14, 2);
  41 }
  42
  43 static inline uint32_t iclass_bits(uint32_t encoding)
  44 {
  45     /* The instruction class is encoded in bits [31:28] */
  46     uint32_t iclass = extract32(encoding, 28, 4);
  47     /* If parse bits are zero, this is a duplex */
  48     if (parse_bits(encoding) == 0) {
  49         iclass += 16;
  50     }
  51     return iclass;
  52 }
  53
  54 static inline bool is_packet_end(uint32_t endocing)
  55 {
  56     uint32_t bits = parse_bits(endocing);
  57     return ((bits == 0x3) || (bits == 0x0));
  58 }
  59
  60 int disassemble_hexagon(uint32_t *words, int nwords, bfd_vma pc, GString *buf);
  61
  62 #endif