qemu-e2k/target/hexagon/decode.h
Taylor Simpson 1547a2d339 Hexagon (target/hexagon) Use QEMU decodetree (32-bit instructions)
The Decodetree Specification can be found here
https://www.qemu.org/docs/master/devel/decodetree.html

Covers all 32-bit instructions, including HVX

We generate separate decoders for each instruction class.  The reason
will be more apparent in the next patch in this series.

We add 2 new scripts
    gen_decodetree.py        Generate the input to decodetree.py
    gen_trans_funcs.py       Generate the trans_* functions used by the
                             output of decodetree.py

Since the functions generated by decodetree.py take DisasContext * as an
argument, we add the argument to a couple of functions that didn't need
it previously.  We also set the insn field in DisasContext during decode
because it is used by the trans_* functions.

There is a g_assert_not_reached() in decode_insns() in decode.c to
verify we never try to use the old decoder on 32-bit instructions

Signed-off-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Brian Cain <bcain@quicinc.com>
Message-Id: <20240115221443.365287-2-ltaylorsimpson@gmail.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
2024-01-21 22:02:33 -08:00

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1.1 KiB
C

/*
* Copyright(c) 2019-2021 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_DECODE_H
#define HEXAGON_DECODE_H
#include "cpu.h"
#include "opcodes.h"
#include "insn.h"
#include "translate.h"
void decode_init(void);
void decode_send_insn_to(Packet *packet, int start, int newloc);
int decode_packet(DisasContext *ctx, int max_words, const uint32_t *words,
Packet *pkt, bool disas_only);
#endif