LXR qemu/target/hexagon/cpu

   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
  33static inline uint32_t parse_bits(uint32_t encoding)
  34{
  35    /* The parse bits are [15:14] */
  36    return extract32(encoding, 14, 2);
  37}
  38
  39static 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
  50static inline int is_packet_end(uint32_t endocing)
  51{
  52    uint32_t bits = parse_bits(endocing);
  53    return ((bits == 0x3) || (bits == 0x0));
  54}
  55
  56int disassemble_hexagon(uint32_t *words, int nwords, bfd_vma pc, GString *buf);
  57
  58#endif
  59