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// Copyright 2020 The gVisor Authors.
//
// 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 primitive defines marshal.Marshallable implementations for primitive
// types.
package primitive
import (
"gvisor.dev/gvisor/pkg/usermem"
"gvisor.dev/gvisor/tools/go_marshal/marshal"
)
// Int16 is a marshal.Marshallable implementation for int16.
//
// +marshal slice:Int16Slice:inner
type Int16 int16
// Uint16 is a marshal.Marshallable implementation for uint16.
//
// +marshal slice:Uint16Slice:inner
type Uint16 uint16
// Int32 is a marshal.Marshallable implementation for int32.
//
// +marshal slice:Int32Slice:inner
type Int32 int32
// Uint32 is a marshal.Marshallable implementation for uint32.
//
// +marshal slice:Uint32Slice:inner
type Uint32 uint32
// Int64 is a marshal.Marshallable implementation for int64.
//
// +marshal slice:Int64Slice:inner
type Int64 int64
// Uint64 is a marshal.Marshallable implementation for uint64.
//
// +marshal slice:Uint64Slice:inner
type Uint64 uint64
// Below, we define some convenience functions for marshalling primitive types
// using the newtypes above, without requiring superfluous casts.
// 16-bit integers
// CopyInt16In is a convenient wrapper for copying in an int16 from the task's
// memory.
func CopyInt16In(task marshal.Task, addr usermem.Addr, dst *int16) (int, error) {
var buf Int16
n, err := buf.CopyIn(task, addr)
if err != nil {
return n, err
}
*dst = int16(buf)
return n, nil
}
// CopyInt16Out is a convenient wrapper for copying out an int16 to the task's
// memory.
func CopyInt16Out(task marshal.Task, addr usermem.Addr, src int16) (int, error) {
srcP := Int16(src)
return srcP.CopyOut(task, addr)
}
// CopyUint16In is a convenient wrapper for copying in a uint16 from the task's
// memory.
func CopyUint16In(task marshal.Task, addr usermem.Addr, dst *uint16) (int, error) {
var buf Uint16
n, err := buf.CopyIn(task, addr)
if err != nil {
return n, err
}
*dst = uint16(buf)
return n, nil
}
// CopyUint16Out is a convenient wrapper for copying out a uint16 to the task's
// memory.
func CopyUint16Out(task marshal.Task, addr usermem.Addr, src uint16) (int, error) {
srcP := Uint16(src)
return srcP.CopyOut(task, addr)
}
// 32-bit integers
// CopyInt32In is a convenient wrapper for copying in an int32 from the task's
// memory.
func CopyInt32In(task marshal.Task, addr usermem.Addr, dst *int32) (int, error) {
var buf Int32
n, err := buf.CopyIn(task, addr)
if err != nil {
return n, err
}
*dst = int32(buf)
return n, nil
}
// CopyInt32Out is a convenient wrapper for copying out an int32 to the task's
// memory.
func CopyInt32Out(task marshal.Task, addr usermem.Addr, src int32) (int, error) {
srcP := Int32(src)
return srcP.CopyOut(task, addr)
}
// CopyUint32In is a convenient wrapper for copying in a uint32 from the task's
// memory.
func CopyUint32In(task marshal.Task, addr usermem.Addr, dst *uint32) (int, error) {
var buf Uint32
n, err := buf.CopyIn(task, addr)
if err != nil {
return n, err
}
*dst = uint32(buf)
return n, nil
}
// CopyUint32Out is a convenient wrapper for copying out a uint32 to the task's
// memory.
func CopyUint32Out(task marshal.Task, addr usermem.Addr, src uint32) (int, error) {
srcP := Uint32(src)
return srcP.CopyOut(task, addr)
}
// 64-bit integers
// CopyInt64In is a convenient wrapper for copying in an int64 from the task's
// memory.
func CopyInt64In(task marshal.Task, addr usermem.Addr, dst *int64) (int, error) {
var buf Int64
n, err := buf.CopyIn(task, addr)
if err != nil {
return n, err
}
*dst = int64(buf)
return n, nil
}
// CopyInt64Out is a convenient wrapper for copying out an int64 to the task's
// memory.
func CopyInt64Out(task marshal.Task, addr usermem.Addr, src int64) (int, error) {
srcP := Int64(src)
return srcP.CopyOut(task, addr)
}
// CopyUint64In is a convenient wrapper for copying in a uint64 from the task's
// memory.
func CopyUint64In(task marshal.Task, addr usermem.Addr, dst *uint64) (int, error) {
var buf Uint64
n, err := buf.CopyIn(task, addr)
if err != nil {
return n, err
}
*dst = uint64(buf)
return n, nil
}
// CopyUint64Out is a convenient wrapper for copying out a uint64 to the task's
// memory.
func CopyUint64Out(task marshal.Task, addr usermem.Addr, src uint64) (int, error) {
srcP := Uint64(src)
return srcP.CopyOut(task, addr)
}
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