// args[i] == 0 marks the end of the argument list.
type instFormat struct {
	mask     uint32
	value    uint32
	priority int8
	op       Op
	opBits   uint64
	args     instArgs
}

type instArgs [4]instArg

var (
	errMode    = fmt.Errorf("unsupported execution mode")
	errShort   = fmt.Errorf("truncated instruction")
	errUnknown = fmt.Errorf("unknown instruction")
)

var decoderCover []bool

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package arm64asm

import (
	"encoding/binary"
	"fmt"
)

type instArgs [5]instArg

// An instFormat describes the format of an instruction encoding.
// An instruction with 32-bit value x matches the format if x&mask == value
// and the predicator: canDecode(x) return true.
type instFormat struct {