snapshot: sagernet/gvisor v0.0.0-20250811.0-sing-box-mod.1

Содержимое пина, зафиксированного в go.mod sing-box-lx, одним коммитом
без истории. Полная история SagerNet/gvisor — 1.45 ГБ и клонируется в
каждой CI-джобе; наша дельта — одна вставка в одну функцию, история для
неё не нужна.

Module path github.com/sagernet/gvisor сохранён намеренно: на него
опирается replace-директива суперпроекта.

Патч поверх — отдельным коммитом, чтобы дельта читалась одним git show
и переносилась на новый пин копированием.

SPECS/TASKS/048-GVISOR_HANDSHAKE_NIL_CRASH
This commit is contained in:
Leadaxe 2026-08-04 15:50:08 +03:00
commit 2c4ae3b0a4
712 changed files with 185689 additions and 0 deletions

View file

@ -0,0 +1,673 @@
// Automatically generated marshal implementation. See tools/go_marshal.
// If there are issues with build constraint aggregation, see
// tools/go_marshal/gomarshal/generator.go:writeHeader(). The constraints here
// come from the input set of files used to generate this file. This input set
// is filtered based on pre-defined file suffixes related to build constraints,
// see tools/defs.bzl:calculate_sets().
//go:build arm64 && arm64 && arm64 && arm64 && arm64
// +build arm64,arm64,arm64,arm64,arm64
package linux
import (
"io"
"reflect"
"runtime"
"unsafe"
"github.com/sagernet/gvisor/pkg/gohacks"
"github.com/sagernet/gvisor/pkg/hostarch"
"github.com/sagernet/gvisor/pkg/marshal"
)
// Marshallable types used by this file.
var (
_ marshal.Marshallable = (*EpollEvent)(nil)
_ marshal.Marshallable = (*IPCPerm)(nil)
_ marshal.Marshallable = (*PtraceRegs)(nil)
_ marshal.Marshallable = (*SemidDS)(nil)
_ marshal.Marshallable = (*Stat)(nil)
_ marshal.Marshallable = (*TimeT)(nil)
_ marshal.Marshallable = (*Timespec)(nil)
)
// SizeBytes implements marshal.Marshallable.SizeBytes.
func (e *EpollEvent) SizeBytes() int {
return 8 +
4*2
}
// MarshalBytes implements marshal.Marshallable.MarshalBytes.
func (e *EpollEvent) MarshalBytes(dst []byte) []byte {
hostarch.ByteOrder.PutUint32(dst[:4], uint32(e.Events))
dst = dst[4:]
// Padding: dst[:sizeof(int32)] ~= int32(0)
dst = dst[4:]
for idx := 0; idx < 2; idx++ {
hostarch.ByteOrder.PutUint32(dst[:4], uint32(e.Data[idx]))
dst = dst[4:]
}
return dst
}
// UnmarshalBytes implements marshal.Marshallable.UnmarshalBytes.
func (e *EpollEvent) UnmarshalBytes(src []byte) []byte {
e.Events = uint32(hostarch.ByteOrder.Uint32(src[:4]))
src = src[4:]
// Padding: var _ int32 ~= src[:sizeof(int32)]
src = src[4:]
for idx := 0; idx < 2; idx++ {
e.Data[idx] = int32(hostarch.ByteOrder.Uint32(src[:4]))
src = src[4:]
}
return src
}
// Packed implements marshal.Marshallable.Packed.
//
//go:nosplit
func (e *EpollEvent) Packed() bool {
return true
}
// MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe.
func (e *EpollEvent) MarshalUnsafe(dst []byte) []byte {
size := e.SizeBytes()
gohacks.Memmove(unsafe.Pointer(&dst[0]), unsafe.Pointer(e), uintptr(size))
return dst[size:]
}
// UnmarshalUnsafe implements marshal.Marshallable.UnmarshalUnsafe.
func (e *EpollEvent) UnmarshalUnsafe(src []byte) []byte {
size := e.SizeBytes()
gohacks.Memmove(unsafe.Pointer(e), unsafe.Pointer(&src[0]), uintptr(size))
return src[size:]
}
// CopyOutN implements marshal.Marshallable.CopyOutN.
func (e *EpollEvent) CopyOutN(cc marshal.CopyContext, addr hostarch.Addr, limit int) (int, error) {
// Construct a slice backed by dst's underlying memory.
var buf []byte
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
hdr.Data = uintptr(gohacks.Noescape(unsafe.Pointer(e)))
hdr.Len = e.SizeBytes()
hdr.Cap = e.SizeBytes()
length, err := cc.CopyOutBytes(addr, buf[:limit]) // escapes: okay.
// Since we bypassed the compiler's escape analysis, indicate that e
// must live until the use above.
runtime.KeepAlive(e) // escapes: replaced by intrinsic.
return length, err
}
// CopyOut implements marshal.Marshallable.CopyOut.
func (e *EpollEvent) CopyOut(cc marshal.CopyContext, addr hostarch.Addr) (int, error) {
return e.CopyOutN(cc, addr, e.SizeBytes())
}
// CopyInN implements marshal.Marshallable.CopyInN.
func (e *EpollEvent) CopyInN(cc marshal.CopyContext, addr hostarch.Addr, limit int) (int, error) {
// Construct a slice backed by dst's underlying memory.
var buf []byte
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
hdr.Data = uintptr(gohacks.Noescape(unsafe.Pointer(e)))
hdr.Len = e.SizeBytes()
hdr.Cap = e.SizeBytes()
length, err := cc.CopyInBytes(addr, buf[:limit]) // escapes: okay.
// Since we bypassed the compiler's escape analysis, indicate that e
// must live until the use above.
runtime.KeepAlive(e) // escapes: replaced by intrinsic.
return length, err
}
// CopyIn implements marshal.Marshallable.CopyIn.
func (e *EpollEvent) CopyIn(cc marshal.CopyContext, addr hostarch.Addr) (int, error) {
return e.CopyInN(cc, addr, e.SizeBytes())
}
// WriteTo implements io.WriterTo.WriteTo.
func (e *EpollEvent) WriteTo(writer io.Writer) (int64, error) {
// Construct a slice backed by dst's underlying memory.
var buf []byte
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
hdr.Data = uintptr(gohacks.Noescape(unsafe.Pointer(e)))
hdr.Len = e.SizeBytes()
hdr.Cap = e.SizeBytes()
length, err := writer.Write(buf)
// Since we bypassed the compiler's escape analysis, indicate that e
// must live until the use above.
runtime.KeepAlive(e) // escapes: replaced by intrinsic.
return int64(length), err
}
// CopyEpollEventSliceIn copies in a slice of EpollEvent objects from the task's memory.
func CopyEpollEventSliceIn(cc marshal.CopyContext, addr hostarch.Addr, dst []EpollEvent) (int, error) {
count := len(dst)
if count == 0 {
return 0, nil
}
size := (*EpollEvent)(nil).SizeBytes()
ptr := unsafe.Pointer(&dst)
val := gohacks.Noescape(unsafe.Pointer((*reflect.SliceHeader)(ptr).Data))
// Construct a slice backed by dst's underlying memory.
var buf []byte
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
hdr.Data = uintptr(val)
hdr.Len = size * count
hdr.Cap = size * count
length, err := cc.CopyInBytes(addr, buf)
// Since we bypassed the compiler's escape analysis, indicate that dst
// must live until the use above.
runtime.KeepAlive(dst) // escapes: replaced by intrinsic.
return length, err
}
// CopyEpollEventSliceOut copies a slice of EpollEvent objects to the task's memory.
func CopyEpollEventSliceOut(cc marshal.CopyContext, addr hostarch.Addr, src []EpollEvent) (int, error) {
count := len(src)
if count == 0 {
return 0, nil
}
size := (*EpollEvent)(nil).SizeBytes()
ptr := unsafe.Pointer(&src)
val := gohacks.Noescape(unsafe.Pointer((*reflect.SliceHeader)(ptr).Data))
// Construct a slice backed by dst's underlying memory.
var buf []byte
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
hdr.Data = uintptr(val)
hdr.Len = size * count
hdr.Cap = size * count
length, err := cc.CopyOutBytes(addr, buf)
// Since we bypassed the compiler's escape analysis, indicate that src
// must live until the use above.
runtime.KeepAlive(src) // escapes: replaced by intrinsic.
return length, err
}
// MarshalUnsafeEpollEventSlice is like EpollEvent.MarshalUnsafe, but for a []EpollEvent.
func MarshalUnsafeEpollEventSlice(src []EpollEvent, dst []byte) []byte {
count := len(src)
if count == 0 {
return dst
}
size := (*EpollEvent)(nil).SizeBytes()
buf := dst[:size*count]
gohacks.Memmove(unsafe.Pointer(&buf[0]), unsafe.Pointer(&src[0]), uintptr(len(buf)))
return dst[size*count:]
}
// UnmarshalUnsafeEpollEventSlice is like EpollEvent.UnmarshalUnsafe, but for a []EpollEvent.
func UnmarshalUnsafeEpollEventSlice(dst []EpollEvent, src []byte) []byte {
count := len(dst)
if count == 0 {
return src
}
size := (*EpollEvent)(nil).SizeBytes()
buf := src[:size*count]
gohacks.Memmove(unsafe.Pointer(&dst[0]), unsafe.Pointer(&buf[0]), uintptr(len(buf)))
return src[size*count:]
}
// SizeBytes implements marshal.Marshallable.SizeBytes.
func (s *Stat) SizeBytes() int {
return 72 +
(*Timespec)(nil).SizeBytes() +
(*Timespec)(nil).SizeBytes() +
(*Timespec)(nil).SizeBytes() +
4*2
}
// MarshalBytes implements marshal.Marshallable.MarshalBytes.
func (s *Stat) MarshalBytes(dst []byte) []byte {
hostarch.ByteOrder.PutUint64(dst[:8], uint64(s.Dev))
dst = dst[8:]
hostarch.ByteOrder.PutUint64(dst[:8], uint64(s.Ino))
dst = dst[8:]
hostarch.ByteOrder.PutUint32(dst[:4], uint32(s.Mode))
dst = dst[4:]
hostarch.ByteOrder.PutUint32(dst[:4], uint32(s.Nlink))
dst = dst[4:]
hostarch.ByteOrder.PutUint32(dst[:4], uint32(s.UID))
dst = dst[4:]
hostarch.ByteOrder.PutUint32(dst[:4], uint32(s.GID))
dst = dst[4:]
hostarch.ByteOrder.PutUint64(dst[:8], uint64(s.Rdev))
dst = dst[8:]
// Padding: dst[:sizeof(uint64)] ~= uint64(0)
dst = dst[8:]
hostarch.ByteOrder.PutUint64(dst[:8], uint64(s.Size))
dst = dst[8:]
hostarch.ByteOrder.PutUint32(dst[:4], uint32(s.Blksize))
dst = dst[4:]
// Padding: dst[:sizeof(int32)] ~= int32(0)
dst = dst[4:]
hostarch.ByteOrder.PutUint64(dst[:8], uint64(s.Blocks))
dst = dst[8:]
dst = s.ATime.MarshalUnsafe(dst)
dst = s.MTime.MarshalUnsafe(dst)
dst = s.CTime.MarshalUnsafe(dst)
// Padding: dst[:sizeof(int32)*2] ~= [2]int32{0}
dst = dst[4*(2):]
return dst
}
// UnmarshalBytes implements marshal.Marshallable.UnmarshalBytes.
func (s *Stat) UnmarshalBytes(src []byte) []byte {
s.Dev = uint64(hostarch.ByteOrder.Uint64(src[:8]))
src = src[8:]
s.Ino = uint64(hostarch.ByteOrder.Uint64(src[:8]))
src = src[8:]
s.Mode = uint32(hostarch.ByteOrder.Uint32(src[:4]))
src = src[4:]
s.Nlink = uint32(hostarch.ByteOrder.Uint32(src[:4]))
src = src[4:]
s.UID = uint32(hostarch.ByteOrder.Uint32(src[:4]))
src = src[4:]
s.GID = uint32(hostarch.ByteOrder.Uint32(src[:4]))
src = src[4:]
s.Rdev = uint64(hostarch.ByteOrder.Uint64(src[:8]))
src = src[8:]
// Padding: var _ uint64 ~= src[:sizeof(uint64)]
src = src[8:]
s.Size = int64(hostarch.ByteOrder.Uint64(src[:8]))
src = src[8:]
s.Blksize = int32(hostarch.ByteOrder.Uint32(src[:4]))
src = src[4:]
// Padding: var _ int32 ~= src[:sizeof(int32)]
src = src[4:]
s.Blocks = int64(hostarch.ByteOrder.Uint64(src[:8]))
src = src[8:]
src = s.ATime.UnmarshalUnsafe(src)
src = s.MTime.UnmarshalUnsafe(src)
src = s.CTime.UnmarshalUnsafe(src)
// Padding: ~ copy([2]int32(s._), src[:sizeof(int32)*2])
src = src[4*(2):]
return src
}
// Packed implements marshal.Marshallable.Packed.
//
//go:nosplit
func (s *Stat) Packed() bool {
return s.ATime.Packed() && s.CTime.Packed() && s.MTime.Packed()
}
// MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe.
func (s *Stat) MarshalUnsafe(dst []byte) []byte {
if s.ATime.Packed() && s.CTime.Packed() && s.MTime.Packed() {
size := s.SizeBytes()
gohacks.Memmove(unsafe.Pointer(&dst[0]), unsafe.Pointer(s), uintptr(size))
return dst[size:]
}
// Type Stat doesn't have a packed layout in memory, fallback to MarshalBytes.
return s.MarshalBytes(dst)
}
// UnmarshalUnsafe implements marshal.Marshallable.UnmarshalUnsafe.
func (s *Stat) UnmarshalUnsafe(src []byte) []byte {
if s.ATime.Packed() && s.CTime.Packed() && s.MTime.Packed() {
size := s.SizeBytes()
gohacks.Memmove(unsafe.Pointer(s), unsafe.Pointer(&src[0]), uintptr(size))
return src[size:]
}
// Type Stat doesn't have a packed layout in memory, fallback to UnmarshalBytes.
return s.UnmarshalBytes(src)
}
// CopyOutN implements marshal.Marshallable.CopyOutN.
func (s *Stat) CopyOutN(cc marshal.CopyContext, addr hostarch.Addr, limit int) (int, error) {
if !s.ATime.Packed() && s.CTime.Packed() && s.MTime.Packed() {
// Type Stat doesn't have a packed layout in memory, fall back to MarshalBytes.
buf := cc.CopyScratchBuffer(s.SizeBytes()) // escapes: okay.
s.MarshalBytes(buf) // escapes: fallback.
return cc.CopyOutBytes(addr, buf[:limit]) // escapes: okay.
}
// Construct a slice backed by dst's underlying memory.
var buf []byte
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
hdr.Data = uintptr(gohacks.Noescape(unsafe.Pointer(s)))
hdr.Len = s.SizeBytes()
hdr.Cap = s.SizeBytes()
length, err := cc.CopyOutBytes(addr, buf[:limit]) // escapes: okay.
// Since we bypassed the compiler's escape analysis, indicate that s
// must live until the use above.
runtime.KeepAlive(s) // escapes: replaced by intrinsic.
return length, err
}
// CopyOut implements marshal.Marshallable.CopyOut.
func (s *Stat) CopyOut(cc marshal.CopyContext, addr hostarch.Addr) (int, error) {
return s.CopyOutN(cc, addr, s.SizeBytes())
}
// CopyInN implements marshal.Marshallable.CopyInN.
func (s *Stat) CopyInN(cc marshal.CopyContext, addr hostarch.Addr, limit int) (int, error) {
if !s.ATime.Packed() && s.CTime.Packed() && s.MTime.Packed() {
// Type Stat doesn't have a packed layout in memory, fall back to UnmarshalBytes.
buf := cc.CopyScratchBuffer(s.SizeBytes()) // escapes: okay.
length, err := cc.CopyInBytes(addr, buf[:limit]) // escapes: okay.
// Unmarshal unconditionally. If we had a short copy-in, this results in a
// partially unmarshalled struct.
s.UnmarshalBytes(buf) // escapes: fallback.
return length, err
}
// Construct a slice backed by dst's underlying memory.
var buf []byte
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
hdr.Data = uintptr(gohacks.Noescape(unsafe.Pointer(s)))
hdr.Len = s.SizeBytes()
hdr.Cap = s.SizeBytes()
length, err := cc.CopyInBytes(addr, buf[:limit]) // escapes: okay.
// Since we bypassed the compiler's escape analysis, indicate that s
// must live until the use above.
runtime.KeepAlive(s) // escapes: replaced by intrinsic.
return length, err
}
// CopyIn implements marshal.Marshallable.CopyIn.
func (s *Stat) CopyIn(cc marshal.CopyContext, addr hostarch.Addr) (int, error) {
return s.CopyInN(cc, addr, s.SizeBytes())
}
// WriteTo implements io.WriterTo.WriteTo.
func (s *Stat) WriteTo(writer io.Writer) (int64, error) {
if !s.ATime.Packed() && s.CTime.Packed() && s.MTime.Packed() {
// Type Stat doesn't have a packed layout in memory, fall back to MarshalBytes.
buf := make([]byte, s.SizeBytes())
s.MarshalBytes(buf)
length, err := writer.Write(buf)
return int64(length), err
}
// Construct a slice backed by dst's underlying memory.
var buf []byte
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
hdr.Data = uintptr(gohacks.Noescape(unsafe.Pointer(s)))
hdr.Len = s.SizeBytes()
hdr.Cap = s.SizeBytes()
length, err := writer.Write(buf)
// Since we bypassed the compiler's escape analysis, indicate that s
// must live until the use above.
runtime.KeepAlive(s) // escapes: replaced by intrinsic.
return int64(length), err
}
// SizeBytes implements marshal.Marshallable.SizeBytes.
func (p *PtraceRegs) SizeBytes() int {
return 24 +
8*31
}
// MarshalBytes implements marshal.Marshallable.MarshalBytes.
func (p *PtraceRegs) MarshalBytes(dst []byte) []byte {
for idx := 0; idx < 31; idx++ {
hostarch.ByteOrder.PutUint64(dst[:8], uint64(p.Regs[idx]))
dst = dst[8:]
}
hostarch.ByteOrder.PutUint64(dst[:8], uint64(p.Sp))
dst = dst[8:]
hostarch.ByteOrder.PutUint64(dst[:8], uint64(p.Pc))
dst = dst[8:]
hostarch.ByteOrder.PutUint64(dst[:8], uint64(p.Pstate))
dst = dst[8:]
return dst
}
// UnmarshalBytes implements marshal.Marshallable.UnmarshalBytes.
func (p *PtraceRegs) UnmarshalBytes(src []byte) []byte {
for idx := 0; idx < 31; idx++ {
p.Regs[idx] = uint64(hostarch.ByteOrder.Uint64(src[:8]))
src = src[8:]
}
p.Sp = uint64(hostarch.ByteOrder.Uint64(src[:8]))
src = src[8:]
p.Pc = uint64(hostarch.ByteOrder.Uint64(src[:8]))
src = src[8:]
p.Pstate = uint64(hostarch.ByteOrder.Uint64(src[:8]))
src = src[8:]
return src
}
// Packed implements marshal.Marshallable.Packed.
//
//go:nosplit
func (p *PtraceRegs) Packed() bool {
return true
}
// MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe.
func (p *PtraceRegs) MarshalUnsafe(dst []byte) []byte {
size := p.SizeBytes()
gohacks.Memmove(unsafe.Pointer(&dst[0]), unsafe.Pointer(p), uintptr(size))
return dst[size:]
}
// UnmarshalUnsafe implements marshal.Marshallable.UnmarshalUnsafe.
func (p *PtraceRegs) UnmarshalUnsafe(src []byte) []byte {
size := p.SizeBytes()
gohacks.Memmove(unsafe.Pointer(p), unsafe.Pointer(&src[0]), uintptr(size))
return src[size:]
}
// CopyOutN implements marshal.Marshallable.CopyOutN.
func (p *PtraceRegs) CopyOutN(cc marshal.CopyContext, addr hostarch.Addr, limit int) (int, error) {
// Construct a slice backed by dst's underlying memory.
var buf []byte
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
hdr.Data = uintptr(gohacks.Noescape(unsafe.Pointer(p)))
hdr.Len = p.SizeBytes()
hdr.Cap = p.SizeBytes()
length, err := cc.CopyOutBytes(addr, buf[:limit]) // escapes: okay.
// Since we bypassed the compiler's escape analysis, indicate that p
// must live until the use above.
runtime.KeepAlive(p) // escapes: replaced by intrinsic.
return length, err
}
// CopyOut implements marshal.Marshallable.CopyOut.
func (p *PtraceRegs) CopyOut(cc marshal.CopyContext, addr hostarch.Addr) (int, error) {
return p.CopyOutN(cc, addr, p.SizeBytes())
}
// CopyInN implements marshal.Marshallable.CopyInN.
func (p *PtraceRegs) CopyInN(cc marshal.CopyContext, addr hostarch.Addr, limit int) (int, error) {
// Construct a slice backed by dst's underlying memory.
var buf []byte
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
hdr.Data = uintptr(gohacks.Noescape(unsafe.Pointer(p)))
hdr.Len = p.SizeBytes()
hdr.Cap = p.SizeBytes()
length, err := cc.CopyInBytes(addr, buf[:limit]) // escapes: okay.
// Since we bypassed the compiler's escape analysis, indicate that p
// must live until the use above.
runtime.KeepAlive(p) // escapes: replaced by intrinsic.
return length, err
}
// CopyIn implements marshal.Marshallable.CopyIn.
func (p *PtraceRegs) CopyIn(cc marshal.CopyContext, addr hostarch.Addr) (int, error) {
return p.CopyInN(cc, addr, p.SizeBytes())
}
// WriteTo implements io.WriterTo.WriteTo.
func (p *PtraceRegs) WriteTo(writer io.Writer) (int64, error) {
// Construct a slice backed by dst's underlying memory.
var buf []byte
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
hdr.Data = uintptr(gohacks.Noescape(unsafe.Pointer(p)))
hdr.Len = p.SizeBytes()
hdr.Cap = p.SizeBytes()
length, err := writer.Write(buf)
// Since we bypassed the compiler's escape analysis, indicate that p
// must live until the use above.
runtime.KeepAlive(p) // escapes: replaced by intrinsic.
return int64(length), err
}
// SizeBytes implements marshal.Marshallable.SizeBytes.
func (s *SemidDS) SizeBytes() int {
return 24 +
(*IPCPerm)(nil).SizeBytes() +
(*TimeT)(nil).SizeBytes() +
(*TimeT)(nil).SizeBytes()
}
// MarshalBytes implements marshal.Marshallable.MarshalBytes.
func (s *SemidDS) MarshalBytes(dst []byte) []byte {
dst = s.SemPerm.MarshalUnsafe(dst)
dst = s.SemOTime.MarshalUnsafe(dst)
dst = s.SemCTime.MarshalUnsafe(dst)
hostarch.ByteOrder.PutUint64(dst[:8], uint64(s.SemNSems))
dst = dst[8:]
hostarch.ByteOrder.PutUint64(dst[:8], uint64(s.unused3))
dst = dst[8:]
hostarch.ByteOrder.PutUint64(dst[:8], uint64(s.unused4))
dst = dst[8:]
return dst
}
// UnmarshalBytes implements marshal.Marshallable.UnmarshalBytes.
func (s *SemidDS) UnmarshalBytes(src []byte) []byte {
src = s.SemPerm.UnmarshalUnsafe(src)
src = s.SemOTime.UnmarshalUnsafe(src)
src = s.SemCTime.UnmarshalUnsafe(src)
s.SemNSems = uint64(hostarch.ByteOrder.Uint64(src[:8]))
src = src[8:]
s.unused3 = uint64(hostarch.ByteOrder.Uint64(src[:8]))
src = src[8:]
s.unused4 = uint64(hostarch.ByteOrder.Uint64(src[:8]))
src = src[8:]
return src
}
// Packed implements marshal.Marshallable.Packed.
//
//go:nosplit
func (s *SemidDS) Packed() bool {
return s.SemCTime.Packed() && s.SemOTime.Packed() && s.SemPerm.Packed()
}
// MarshalUnsafe implements marshal.Marshallable.MarshalUnsafe.
func (s *SemidDS) MarshalUnsafe(dst []byte) []byte {
if s.SemCTime.Packed() && s.SemOTime.Packed() && s.SemPerm.Packed() {
size := s.SizeBytes()
gohacks.Memmove(unsafe.Pointer(&dst[0]), unsafe.Pointer(s), uintptr(size))
return dst[size:]
}
// Type SemidDS doesn't have a packed layout in memory, fallback to MarshalBytes.
return s.MarshalBytes(dst)
}
// UnmarshalUnsafe implements marshal.Marshallable.UnmarshalUnsafe.
func (s *SemidDS) UnmarshalUnsafe(src []byte) []byte {
if s.SemCTime.Packed() && s.SemOTime.Packed() && s.SemPerm.Packed() {
size := s.SizeBytes()
gohacks.Memmove(unsafe.Pointer(s), unsafe.Pointer(&src[0]), uintptr(size))
return src[size:]
}
// Type SemidDS doesn't have a packed layout in memory, fallback to UnmarshalBytes.
return s.UnmarshalBytes(src)
}
// CopyOutN implements marshal.Marshallable.CopyOutN.
func (s *SemidDS) CopyOutN(cc marshal.CopyContext, addr hostarch.Addr, limit int) (int, error) {
if !s.SemCTime.Packed() && s.SemOTime.Packed() && s.SemPerm.Packed() {
// Type SemidDS doesn't have a packed layout in memory, fall back to MarshalBytes.
buf := cc.CopyScratchBuffer(s.SizeBytes()) // escapes: okay.
s.MarshalBytes(buf) // escapes: fallback.
return cc.CopyOutBytes(addr, buf[:limit]) // escapes: okay.
}
// Construct a slice backed by dst's underlying memory.
var buf []byte
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
hdr.Data = uintptr(gohacks.Noescape(unsafe.Pointer(s)))
hdr.Len = s.SizeBytes()
hdr.Cap = s.SizeBytes()
length, err := cc.CopyOutBytes(addr, buf[:limit]) // escapes: okay.
// Since we bypassed the compiler's escape analysis, indicate that s
// must live until the use above.
runtime.KeepAlive(s) // escapes: replaced by intrinsic.
return length, err
}
// CopyOut implements marshal.Marshallable.CopyOut.
func (s *SemidDS) CopyOut(cc marshal.CopyContext, addr hostarch.Addr) (int, error) {
return s.CopyOutN(cc, addr, s.SizeBytes())
}
// CopyInN implements marshal.Marshallable.CopyInN.
func (s *SemidDS) CopyInN(cc marshal.CopyContext, addr hostarch.Addr, limit int) (int, error) {
if !s.SemCTime.Packed() && s.SemOTime.Packed() && s.SemPerm.Packed() {
// Type SemidDS doesn't have a packed layout in memory, fall back to UnmarshalBytes.
buf := cc.CopyScratchBuffer(s.SizeBytes()) // escapes: okay.
length, err := cc.CopyInBytes(addr, buf[:limit]) // escapes: okay.
// Unmarshal unconditionally. If we had a short copy-in, this results in a
// partially unmarshalled struct.
s.UnmarshalBytes(buf) // escapes: fallback.
return length, err
}
// Construct a slice backed by dst's underlying memory.
var buf []byte
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
hdr.Data = uintptr(gohacks.Noescape(unsafe.Pointer(s)))
hdr.Len = s.SizeBytes()
hdr.Cap = s.SizeBytes()
length, err := cc.CopyInBytes(addr, buf[:limit]) // escapes: okay.
// Since we bypassed the compiler's escape analysis, indicate that s
// must live until the use above.
runtime.KeepAlive(s) // escapes: replaced by intrinsic.
return length, err
}
// CopyIn implements marshal.Marshallable.CopyIn.
func (s *SemidDS) CopyIn(cc marshal.CopyContext, addr hostarch.Addr) (int, error) {
return s.CopyInN(cc, addr, s.SizeBytes())
}
// WriteTo implements io.WriterTo.WriteTo.
func (s *SemidDS) WriteTo(writer io.Writer) (int64, error) {
if !s.SemCTime.Packed() && s.SemOTime.Packed() && s.SemPerm.Packed() {
// Type SemidDS doesn't have a packed layout in memory, fall back to MarshalBytes.
buf := make([]byte, s.SizeBytes())
s.MarshalBytes(buf)
length, err := writer.Write(buf)
return int64(length), err
}
// Construct a slice backed by dst's underlying memory.
var buf []byte
hdr := (*reflect.SliceHeader)(unsafe.Pointer(&buf))
hdr.Data = uintptr(gohacks.Noescape(unsafe.Pointer(s)))
hdr.Len = s.SizeBytes()
hdr.Cap = s.SizeBytes()
length, err := writer.Write(buf)
// Since we bypassed the compiler's escape analysis, indicate that s
// must live until the use above.
runtime.KeepAlive(s) // escapes: replaced by intrinsic.
return int64(length), err
}