The insn_t and packet_t are the interface between instruction decoding and TCG code generation
Signed-off-by: Taylor Simpson <tsimp...@quicinc.com> --- target/hexagon/insn.h | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 target/hexagon/insn.h diff --git a/target/hexagon/insn.h b/target/hexagon/insn.h new file mode 100644 index 0000000..aa2d1dd --- /dev/null +++ b/target/hexagon/insn.h @@ -0,0 +1,75 @@ +/* + * Copyright(c) 2019-2020 Qualcomm Innovation Center, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef HEXAGON_INSN_H +#define HEXAGON_INSN_H + +#include "cpu.h" +#include "hex_arch_types.h" + +#define INSTRUCTIONS_MAX 7 /* 2 pairs + loopend */ +#define REG_OPERANDS_MAX 5 +#define IMMEDS_MAX 2 + +struct Instruction; +struct Packet; +struct DisasContext; + +typedef void (*semantic_insn_t)(CPUHexagonState *env, + struct DisasContext *ctx, + struct Instruction *insn, + struct Packet *pkt); + +struct Instruction { + semantic_insn_t generate; /* pointer to genptr routine */ + size1u_t regno[REG_OPERANDS_MAX]; /* reg operands including predicates */ + size2u_t opcode; + + size4u_t iclass:6; + size4u_t slot:3; + size4u_t part1:1; /* + * cmp-jumps are split into two insns. + * set for the compare and clear for the jump + */ + size4u_t extension_valid:1; /* Has a constant extender attached */ + size4u_t which_extended:1; /* If has an extender, which immediate */ + size4u_t is_endloop:1; /* This is an end of loop */ + size4u_t new_value_producer_slot:4; + size4s_t immed[IMMEDS_MAX]; /* immediate field */ +}; + +typedef struct Instruction insn_t; + +struct Packet { + size2u_t num_insns; + size2u_t encod_pkt_size_in_bytes; + + /* Pre-decodes about COF */ + size8u_t pkt_has_cof:1; /* Has any change-of-flow */ + size8u_t pkt_has_endloop:1; + + size8u_t pkt_has_dczeroa:1; + + size8u_t pkt_has_store_s0:1; + size8u_t pkt_has_store_s1:1; + + insn_t insn[INSTRUCTIONS_MAX]; +}; + +typedef struct Packet packet_t; + +#endif -- 2.7.4
