target/hexagon/insn.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_INSN_H
  19 #define HEXAGON_INSN_H
  20
  21 #include "cpu.h"
  22
  23 #define INSTRUCTIONS_MAX 7    /* 2 pairs + loopend */
  24 #define REG_OPERANDS_MAX 5
  25 #define IMMEDS_MAX 2
  26
  27 struct Instruction;
  28 struct Packet;
  29 struct DisasContext;
  30
  31 typedef void (*SemanticInsn)(CPUHexagonState *env,
  32                              struct DisasContext *ctx,
  33                              struct Instruction *insn,
  34                              struct Packet *pkt);
  35
  36 struct Instruction {
  37     SemanticInsn generate;            /* pointer to genptr routine */
  38     uint8_t regno[REG_OPERANDS_MAX];    /* reg operands including predicates */
  39     uint16_t opcode;
  40
  41     uint32_t iclass:6;
  42     uint32_t slot:3;
  43     uint32_t part1:1;        /*
  44                               * cmp-jumps are split into two insns.
  45                               * set for the compare and clear for the jump
  46                               */
  47     uint32_t extension_valid:1;   /* Has a constant extender attached */
  48     uint32_t which_extended:1;    /* If has an extender, which immediate */
  49     uint32_t is_endloop:1;   /* This is an end of loop */
  50     uint32_t new_value_producer_slot:4;
  51     int32_t immed[IMMEDS_MAX];    /* immediate field */
  52 };
  53
  54 typedef struct Instruction Insn;
  55
  56 struct Packet {
  57     uint16_t num_insns;
  58     uint16_t encod_pkt_size_in_bytes;
  59
  60     /* Pre-decodes about COF */
  61     uint32_t pkt_has_cof:1;          /* Has any change-of-flow */
  62     uint32_t pkt_has_endloop:1;
  63
  64     uint32_t pkt_has_dczeroa:1;
  65
  66     uint32_t pkt_has_store_s0:1;
  67     uint32_t pkt_has_store_s1:1;
  68
  69     Insn insn[INSTRUCTIONS_MAX];
  70 };
  71
  72 typedef struct Packet Packet;
  73
  74 #endif