// Copyright (C) 2016 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package device

import "fmt"

const (
	UnknownEndian = Endian_UnknownEndian
	BigEndian     = Endian_BigEndian
	LittleEndian  = Endian_LittleEndian
)

// MemoryLayout holds information about how memory is fundamentally laid out for a device.
type MemoryLayout struct {
	// PointerAlignment is the alignment in bytes of a pointer type.
	PointerAlignment int
	// PointerSize is the size in bytes of a pointer type.
	PointerSize int
	// IntegerSize is the size in bytes of a int or unsigned int.
	IntegerSize int
	// SizeSize is the size in bytes of a size_t.
	SizeSize int
	// Endian is the natural byte ordering of the memory layout.
	Endian Endian
}

func (a MemoryLayout) String() string {
	return fmt.Sprintf("Architecture{ alignof(void*): %d, sizeof(void*): %d, sizeof(int): %d, sizeof(size_t): %d, order: %v }",
		a.PointerAlignment, a.PointerSize, a.IntegerSize, a.SizeSize, a.Endian)
}