func toUTF16(data []byte) ([]uint16, error) {
if len(data) < 2 {
return []uint16{}, nil
}
if len(data)%2 > 0 {
// TODO: if this is UTF-16 BE then this is likely encoded wrong
data = append(data, 0)
}
var bo binary.ByteOrder
if data[0] == 0xFF && data[1] == 0xFE {
// UTF-16 LE
bo = binary.LittleEndian
} else if data[0] == 0xFE && data[1] == 0xFF {
// UTF-16 BE
bo = binary.BigEndian
} else {
return []uint16{}, nil
}
s := make([]uint16, 0, len(data)/2)
for i := 2; i < len(data); i += 2 {
s = append(s, bo.Uint16(data[i:i+2]))
}
return s, nil
}
func decodeUTF16(b []byte, bo binary.ByteOrder) string {
s := make([]uint16, 0, len(b)/2)
for i := 0; i < len(b); i += 2 {
s = append(s, bo.Uint16(b[i:i+2]))
}
return string(utf16.Decode(s))
}
func (b *Buffer) ReadUint16(order binary.ByteOrder) (uint16, error) {
if b.readPos >= len(b.Buf)-2 {
return 0, io.EOF
}
u := order.Uint16(b.Buf[b.readPos:])
b.readPos += 2
return u, nil
}
func parseUtf16(strBytes []byte, bo binary.ByteOrder) (string, error) {
shorts := make([]uint16, 0, len(strBytes)/2)
for i := 0; i < len(strBytes); i += 2 {
short := bo.Uint16(strBytes[i : i+2])
shorts = append(shorts, short)
}
return string(utf16.Decode(shorts)), nil
}
func makeGuid(b []byte, order binary.ByteOrder) Guid {
g := Guid{
DataA: order.Uint32(b[:4]),
DataB: order.Uint16(b[4:6]),
DataC: order.Uint16(b[6:8]),
DataD: [8]byte{},
}
copy(g.DataD[:], b[8:])
return g
}
func UTF16ToUTF8String(b []byte, o binary.ByteOrder) dna.String {
utf := make([]uint16, (len(b)+(2-1))/2)
for i := 0; i+(2-1) < len(b); i += 2 {
utf[i/2] = o.Uint16(b[i:])
}
if len(b)/2 < len(utf) {
utf[len(utf)-1] = utf8.RuneError
}
return dna.String(string(utf16.Decode(utf)))
}
// Uint16 reads two bytes from the provided reader using a buffer from the
// free list, converts it to a number using the provided byte order, and returns
// the resulting uint16.
func (l binaryFreeList) Uint16(r io.Reader, byteOrder binary.ByteOrder) (uint16, error) {
buf := l.Borrow()[:2]
if _, err := io.ReadFull(r, buf); err != nil {
l.Return(buf)
return 0, err
}
rv := byteOrder.Uint16(buf)
l.Return(buf)
return rv, nil
}
func newParamListItemFromBytes(bin binary.ByteOrder, b []byte) (*paramListItem, error) {
sz := bin.Uint16(b[2:])
if len(b) < int(sz+4) {
return nil, io.EOF
}
return ¶mListItem{
pid: paramID(bin.Uint16(b[0:])),
value: b[4 : 4+sz],
}, nil
}
func parseOptions(data []byte, byteOrder binary.ByteOrder) (*RawOptions, error) {
if len(data) == 0 {
return nil, nil
}
var options *RawOptions
curData := data
for {
//
// Read code + length
//
if len(curData) < 4 {
return nil, io.ErrUnexpectedEOF
}
optionCode := OptionCode(byteOrder.Uint16(curData[:2]))
optionLen := byteOrder.Uint16(curData[2:4])
if optionCode == OPTION_CODE_END_OF_OPT {
break
}
curData = curData[4:]
//
// read value
//
if len(curData) < int(optionLen) {
return nil, io.ErrUnexpectedEOF
}
optionValue := curData[:optionLen]
//
// check if this is new option
//
if options == nil {
v := make(RawOptions)
options = &v
}
optionValueArray, ok := (*options)[optionCode]
if !ok {
optionValueArray = make([]OptionValue, 0)
(*options)[optionCode] = optionValueArray
}
(*options)[optionCode] = append(optionValueArray, optionValue)
boundary := alignUint16(optionLen)
curData = curData[boundary:]
}
return options, nil
}
func newIPv6Address(byteOrder binary.ByteOrder, data []byte) IPv6Address {
return IPv6Address{
byteOrder.Uint16(data[0:2]),
byteOrder.Uint16(data[2:4]),
byteOrder.Uint16(data[4:6]),
byteOrder.Uint16(data[6:8]),
byteOrder.Uint16(data[8:10]),
byteOrder.Uint16(data[10:12]),
byteOrder.Uint16(data[12:14]),
byteOrder.Uint16(data[14:16]),
}
}
func initConnResponseTRead(in io.Reader, end binary.ByteOrder) *initConnResponseT {
var buf [256]byte;
var response initConnResponseT;
in.Read(&buf);
if buf[0] == failed {
response.status = failed;
response.reasonLength = buf[1];
response.reason = make([]byte, response.reasonLength);
var i uint8;
for i = 0; i < response.reasonLength; i++ {
response.reason[i] = buf[i+2];
}
end.Uint16(buf[i+1:i+3]);
end.Uint16(buf[i+3:i+5]);
}
return &response;
}
func newSimpleProtocol(n int, byteOrder binary.ByteOrder) *simpleProtocol {
protocol := &simpleProtocol{
n: n,
bo: byteOrder,
}
switch n {
case 1:
protocol.encodeHead = func(buffer []byte) {
buffer[0] = byte(len(buffer) - n)
}
protocol.decodeHead = func(buffer []byte) int {
return int(buffer[0])
}
case 2:
protocol.encodeHead = func(buffer []byte) {
byteOrder.PutUint16(buffer, uint16(len(buffer)-n))
}
protocol.decodeHead = func(buffer []byte) int {
return int(byteOrder.Uint16(buffer))
}
case 4:
protocol.encodeHead = func(buffer []byte) {
byteOrder.PutUint32(buffer, uint32(len(buffer)-n))
}
protocol.decodeHead = func(buffer []byte) int {
return int(byteOrder.Uint32(buffer))
}
case 8:
protocol.encodeHead = func(buffer []byte) {
byteOrder.PutUint64(buffer, uint64(len(buffer)-n))
}
protocol.decodeHead = func(buffer []byte) int {
return int(byteOrder.Uint64(buffer))
}
default:
panic("unsupported packet head size")
}
return protocol
}
func (*RawEncoding) Read(c *ClientConn, rect *Rectangle, r io.Reader) (Encoding, error) {
bytesPerPixel := c.PixelFormat.BPP / 8
pixelBytes := make([]uint8, bytesPerPixel)
var byteOrder binary.ByteOrder = binary.LittleEndian
if c.PixelFormat.BigEndian {
byteOrder = binary.BigEndian
}
colors := make([]Color, int(rect.Height)*int(rect.Width))
for y := uint16(0); y < rect.Height; y++ {
for x := uint16(0); x < rect.Width; x++ {
if _, err := io.ReadFull(r, pixelBytes); err != nil {
return nil, err
}
var rawPixel uint32
if c.PixelFormat.BPP == 8 {
rawPixel = uint32(pixelBytes[0])
} else if c.PixelFormat.BPP == 16 {
rawPixel = uint32(byteOrder.Uint16(pixelBytes))
} else if c.PixelFormat.BPP == 32 {
rawPixel = byteOrder.Uint32(pixelBytes)
}
color := &colors[int(y)*int(rect.Width)+int(x)]
if c.PixelFormat.TrueColor {
color.R = uint16((rawPixel >> c.PixelFormat.RedShift) & uint32(c.PixelFormat.RedMax))
color.G = uint16((rawPixel >> c.PixelFormat.GreenShift) & uint32(c.PixelFormat.GreenMax))
color.B = uint16((rawPixel >> c.PixelFormat.BlueShift) & uint32(c.PixelFormat.BlueMax))
} else {
*color = c.ColorMap[rawPixel]
}
}
}
return &RawEncoding{colors}, nil
}
// decodeNumeric decodes a simple stream of numeric or character data
func decodeNumeric(de dataElement, bo binary.ByteOrder) (interface{}, error) {
var b [8]byte
var bs []byte
if int(de.nBytes) > len(b) {
bs = make([]byte, de.nBytes)
} else {
bs = b[:de.nBytes]
}
_, err := de.r.ReadAt(bs, 0)
if err != nil {
return nil, err
}
switch de.dataType {
case miINT8:
val := make([]int8, de.nBytes)
for i, x := range bs {
val[i] = int8(x)
}
return val, nil
case miUINT8:
val := make([]uint8, de.nBytes)
copy(val, bs)
return val, nil
case miINT16:
val := make([]int16, de.nBytes/2)
for i := range bs {
val[i] = int16(bo.Uint16(bs[2*i:]))
}
return val, nil
case miUINT16:
val := make([]uint16, de.nBytes/2)
for i := range bs {
val[i] = bo.Uint16(bs[2*i:])
}
return val, nil
case miINT32:
val := make([]int32, de.nBytes/4)
for i := range bs {
val[i] = int32(bo.Uint32(bs[4*i:]))
}
return val, nil
case miUINT32:
val := make([]uint32, de.nBytes/4)
for i := range bs {
val[i] = bo.Uint32(bs[4*i:])
}
return val, nil
case miINT64:
val := make([]int64, de.nBytes/8)
for i := range bs {
val[i] = int64(bo.Uint64(bs[8*i:]))
}
return val, nil
case miUINT64:
val := make([]uint64, de.nBytes/8)
for i := range bs {
val[i] = bo.Uint64(bs[8*i:])
}
return val, nil
case miSINGLE:
val := make([]float32, de.nBytes/4)
for i := range bs {
val[i] = math.Float32frombits(bo.Uint32(bs[4*i:]))
}
return val, nil
case miDOUBLE:
val := make([]float64, de.nBytes/8)
for i := range bs {
val[i] = math.Float64frombits(bo.Uint64(bs[8*i:]))
}
return val, nil
case miUTF8:
return string(bs), nil
case miUTF16:
x := make([]uint16, de.nBytes/2)
for i := range bs {
x[i] = bo.Uint16(bs[2*i:])
}
return string(utf16.Decode(x)), nil
case miUTF32:
runes := make([]rune, de.nBytes/4)
for i := range runes {
runes[i] = rune(bo.Uint32(bs[4*i:]))
}
return string(runes), nil
}
return nil, nil
}
func (s *Stream) readSectionHeaderBlockBody(headerData []byte) (header *SectionHeaderBlock, err error) {
//
// read byte-order magic, version and section length
//
bodyData, err := s.read(16)
if err != nil {
return nil, err
}
//
// read byte-order magic
//
var byteOrder binary.ByteOrder
if bodyData[0] == 0x1A && bodyData[1] == 0x2B && bodyData[2] == 0x3C && bodyData[3] == 0x4D {
byteOrder = binary.BigEndian
} else if bodyData[3] == 0x1A && bodyData[2] == 0x2B && bodyData[1] == 0x3C && bodyData[0] == 0x4D {
byteOrder = binary.LittleEndian
} else {
return nil, errors.New("invalid byte order mark")
}
//
// read other fields
//
versionMajor := byteOrder.Uint16(bodyData[4:6])
versionMinor := byteOrder.Uint16(bodyData[6:8])
sectionLength := int64(byteOrder.Uint64(bodyData[8:16]))
//
// Read options
//
totalLength := byteOrder.Uint32(headerData[4:8])
optsLen := totalLength - 28
rawOpts, err := s.readOptions(optsLen, byteOrder)
if err != nil {
return nil, err
}
opts, err := parseSectionHeaderOptions(rawOpts)
if err != nil {
return nil, err
}
//
// Read last block total length
//
_, err = s.readExactly(4)
if err != nil {
return nil, err
}
retval := &SectionHeaderBlock{
totalLength: totalLength,
ByteOrder: byteOrder,
VersionMajor: versionMajor,
VersionMinor: versionMinor,
SectionLength: sectionLength,
RawOptions: rawOpts,
Options: opts,
}
s.sectionHeader = retval
return retval, nil
}
// Convert raw image data into a 2d array of 64-bit labels
func (d *Data) convertTo64bit(geom dvid.Geometry, data []uint8, bytesPerVoxel, stride int) ([]byte, error) {
nx := int(geom.Size().Value(0))
ny := int(geom.Size().Value(1))
numBytes := nx * ny * 8
data64 := make([]byte, numBytes, numBytes)
var byteOrder binary.ByteOrder
if geom.DataShape().ShapeDimensions() == 2 {
byteOrder = binary.BigEndian // This is the default for PNG
} else {
byteOrder = binary.LittleEndian
}
switch bytesPerVoxel {
case 1:
dstI := 0
for y := 0; y < ny; y++ {
srcI := y * stride
for x := 0; x < nx; x++ {
binary.LittleEndian.PutUint64(data64[dstI:dstI+8], uint64(data[srcI]))
srcI++
dstI += 8
}
}
case 2:
dstI := 0
for y := 0; y < ny; y++ {
srcI := y * stride
for x := 0; x < nx; x++ {
value := byteOrder.Uint16(data[srcI : srcI+2])
binary.LittleEndian.PutUint64(data64[dstI:dstI+8], uint64(value))
srcI += 2
dstI += 8
}
}
case 4:
dstI := 0
for y := 0; y < ny; y++ {
srcI := y * stride
for x := 0; x < nx; x++ {
value := byteOrder.Uint32(data[srcI : srcI+4])
binary.LittleEndian.PutUint64(data64[dstI:dstI+8], uint64(value))
srcI += 4
dstI += 8
}
}
case 8:
dstI := 0
for y := 0; y < ny; y++ {
srcI := y * stride
for x := 0; x < nx; x++ {
value := byteOrder.Uint64(data[srcI : srcI+8])
binary.LittleEndian.PutUint64(data64[dstI:dstI+8], uint64(value))
srcI += 8
dstI += 8
}
}
default:
return nil, fmt.Errorf("could not convert to 64-bit label given %d bytes/voxel", bytesPerVoxel)
}
return data64, nil
}
func getUint16(b []byte, byteOrder binary.ByteOrder) (uint16, int) {
return byteOrder.Uint16(b), 2
}
func getInt16(b []byte, byteOrder binary.ByteOrder) (int16, int) {
return int16(byteOrder.Uint16(b)), 2
}
func reprSShort(in []byte, bo binary.ByteOrder) string { return fmt.Sprintf("%d", int16(bo.Uint16(in))) }
func rvalSShort(in []byte, bo binary.ByteOrder) reflect.Value {
return reflect.ValueOf(int16(bo.Uint16(in)))
}
func newSchemeFromBytes(bin binary.ByteOrder, b []byte) encapsulationScheme {
return encapsulationScheme{
scheme: binary.BigEndian.Uint16(b[0:]), // seems to always be BigEndian (?)
options: bin.Uint16(b[2:]),
}
}
func ldelf(ctxt *Link, f *bio.Reader, pkg string, length int64, pn string) {
if ctxt.Debugvlog != 0 {
ctxt.Logf("%5.2f ldelf %s\n", obj.Cputime(), pn)
}
localSymVersion := ctxt.Syms.IncVersion()
base := f.Offset()
var add uint64
var e binary.ByteOrder
var elfobj *ElfObj
var err error
var flag int
var hdr *ElfHdrBytes
var hdrbuf [64]uint8
var info uint64
var is64 int
var j int
var n int
var name string
var p []byte
var r []Reloc
var rela int
var rp *Reloc
var rsect *ElfSect
var s *Symbol
var sect *ElfSect
var sym ElfSym
var symbols []*Symbol
if _, err := io.ReadFull(f, hdrbuf[:]); err != nil {
goto bad
}
hdr = new(ElfHdrBytes)
binary.Read(bytes.NewReader(hdrbuf[:]), binary.BigEndian, hdr) // only byte arrays; byte order doesn't matter
if string(hdr.Ident[:4]) != "\x7FELF" {
goto bad
}
switch hdr.Ident[5] {
case ElfDataLsb:
e = binary.LittleEndian
case ElfDataMsb:
e = binary.BigEndian
default:
goto bad
}
// read header
elfobj = new(ElfObj)
elfobj.e = e
elfobj.f = f
elfobj.base = base
elfobj.length = length
elfobj.name = pn
is64 = 0
if hdr.Ident[4] == ElfClass64 {
is64 = 1
hdr := new(ElfHdrBytes64)
binary.Read(bytes.NewReader(hdrbuf[:]), binary.BigEndian, hdr) // only byte arrays; byte order doesn't matter
elfobj.type_ = uint32(e.Uint16(hdr.Type[:]))
elfobj.machine = uint32(e.Uint16(hdr.Machine[:]))
elfobj.version = e.Uint32(hdr.Version[:])
elfobj.phoff = e.Uint64(hdr.Phoff[:])
elfobj.shoff = e.Uint64(hdr.Shoff[:])
elfobj.flags = e.Uint32(hdr.Flags[:])
elfobj.ehsize = uint32(e.Uint16(hdr.Ehsize[:]))
elfobj.phentsize = uint32(e.Uint16(hdr.Phentsize[:]))
elfobj.phnum = uint32(e.Uint16(hdr.Phnum[:]))
elfobj.shentsize = uint32(e.Uint16(hdr.Shentsize[:]))
elfobj.shnum = uint32(e.Uint16(hdr.Shnum[:]))
elfobj.shstrndx = uint32(e.Uint16(hdr.Shstrndx[:]))
} else {
elfobj.type_ = uint32(e.Uint16(hdr.Type[:]))
elfobj.machine = uint32(e.Uint16(hdr.Machine[:]))
elfobj.version = e.Uint32(hdr.Version[:])
elfobj.entry = uint64(e.Uint32(hdr.Entry[:]))
elfobj.phoff = uint64(e.Uint32(hdr.Phoff[:]))
elfobj.shoff = uint64(e.Uint32(hdr.Shoff[:]))
elfobj.flags = e.Uint32(hdr.Flags[:])
elfobj.ehsize = uint32(e.Uint16(hdr.Ehsize[:]))
elfobj.phentsize = uint32(e.Uint16(hdr.Phentsize[:]))
elfobj.phnum = uint32(e.Uint16(hdr.Phnum[:]))
elfobj.shentsize = uint32(e.Uint16(hdr.Shentsize[:]))
elfobj.shnum = uint32(e.Uint16(hdr.Shnum[:]))
elfobj.shstrndx = uint32(e.Uint16(hdr.Shstrndx[:]))
}
elfobj.is64 = is64
if uint32(hdr.Ident[6]) != elfobj.version {
goto bad
}
if e.Uint16(hdr.Type[:]) != ElfTypeRelocatable {
Errorf(nil, "%s: elf but not elf relocatable object", pn)
return
}
switch SysArch.Family {
default:
Errorf(nil, "%s: elf %s unimplemented", pn, SysArch.Name)
return
case sys.MIPS64:
if elfobj.machine != ElfMachMips || hdr.Ident[4] != ElfClass64 {
Errorf(nil, "%s: elf object but not mips64", pn)
return
}
case sys.ARM:
if e != binary.LittleEndian || elfobj.machine != ElfMachArm || hdr.Ident[4] != ElfClass32 {
Errorf(nil, "%s: elf object but not arm", pn)
return
}
case sys.AMD64:
if e != binary.LittleEndian || elfobj.machine != ElfMachAmd64 || hdr.Ident[4] != ElfClass64 {
Errorf(nil, "%s: elf object but not amd64", pn)
return
}
case sys.ARM64:
if e != binary.LittleEndian || elfobj.machine != ElfMachArm64 || hdr.Ident[4] != ElfClass64 {
Errorf(nil, "%s: elf object but not arm64", pn)
return
}
case sys.I386:
if e != binary.LittleEndian || elfobj.machine != ElfMach386 || hdr.Ident[4] != ElfClass32 {
Errorf(nil, "%s: elf object but not 386", pn)
return
}
case sys.PPC64:
if elfobj.machine != ElfMachPower64 || hdr.Ident[4] != ElfClass64 {
Errorf(nil, "%s: elf object but not ppc64", pn)
return
}
case sys.S390X:
if elfobj.machine != ElfMachS390 || hdr.Ident[4] != ElfClass64 {
Errorf(nil, "%s: elf object but not s390x", pn)
return
}
}
// load section list into memory.
elfobj.sect = make([]ElfSect, elfobj.shnum)
elfobj.nsect = uint(elfobj.shnum)
for i := 0; uint(i) < elfobj.nsect; i++ {
if f.Seek(int64(uint64(base)+elfobj.shoff+uint64(int64(i)*int64(elfobj.shentsize))), 0) < 0 {
goto bad
}
sect = &elfobj.sect[i]
if is64 != 0 {
var b ElfSectBytes64
if err = binary.Read(f, e, &b); err != nil {
goto bad
}
sect.nameoff = e.Uint32(b.Name[:])
sect.type_ = e.Uint32(b.Type[:])
sect.flags = e.Uint64(b.Flags[:])
sect.addr = e.Uint64(b.Addr[:])
sect.off = e.Uint64(b.Off[:])
sect.size = e.Uint64(b.Size[:])
sect.link = e.Uint32(b.Link[:])
sect.info = e.Uint32(b.Info[:])
sect.align = e.Uint64(b.Align[:])
sect.entsize = e.Uint64(b.Entsize[:])
} else {
var b ElfSectBytes
if err = binary.Read(f, e, &b); err != nil {
goto bad
}
sect.nameoff = e.Uint32(b.Name[:])
sect.type_ = e.Uint32(b.Type[:])
sect.flags = uint64(e.Uint32(b.Flags[:]))
sect.addr = uint64(e.Uint32(b.Addr[:]))
sect.off = uint64(e.Uint32(b.Off[:]))
sect.size = uint64(e.Uint32(b.Size[:]))
sect.link = e.Uint32(b.Link[:])
sect.info = e.Uint32(b.Info[:])
sect.align = uint64(e.Uint32(b.Align[:]))
sect.entsize = uint64(e.Uint32(b.Entsize[:]))
}
}
// read section string table and translate names
if elfobj.shstrndx >= uint32(elfobj.nsect) {
err = fmt.Errorf("shstrndx out of range %d >= %d", elfobj.shstrndx, elfobj.nsect)
goto bad
}
sect = &elfobj.sect[elfobj.shstrndx]
if err = elfmap(elfobj, sect); err != nil {
goto bad
}
for i := 0; uint(i) < elfobj.nsect; i++ {
if elfobj.sect[i].nameoff != 0 {
elfobj.sect[i].name = cstring(sect.base[elfobj.sect[i].nameoff:])
}
}
// load string table for symbols into memory.
elfobj.symtab = section(elfobj, ".symtab")
if elfobj.symtab == nil {
// our work is done here - no symbols means nothing can refer to this file
return
}
if elfobj.symtab.link <= 0 || elfobj.symtab.link >= uint32(elfobj.nsect) {
Errorf(nil, "%s: elf object has symbol table with invalid string table link", pn)
return
}
elfobj.symstr = &elfobj.sect[elfobj.symtab.link]
if is64 != 0 {
elfobj.nsymtab = int(elfobj.symtab.size / ELF64SYMSIZE)
} else {
elfobj.nsymtab = int(elfobj.symtab.size / ELF32SYMSIZE)
}
if err = elfmap(elfobj, elfobj.symtab); err != nil {
goto bad
}
if err = elfmap(elfobj, elfobj.symstr); err != nil {
goto bad
}
// load text and data segments into memory.
// they are not as small as the section lists, but we'll need
// the memory anyway for the symbol images, so we might
// as well use one large chunk.
// create symbols for elfmapped sections
for i := 0; uint(i) < elfobj.nsect; i++ {
sect = &elfobj.sect[i]
if sect.type_ == SHT_ARM_ATTRIBUTES && sect.name == ".ARM.attributes" {
if err = elfmap(elfobj, sect); err != nil {
goto bad
}
parseArmAttributes(ctxt, e, sect.base[:sect.size])
}
if (sect.type_ != ElfSectProgbits && sect.type_ != ElfSectNobits) || sect.flags&ElfSectFlagAlloc == 0 {
continue
}
if sect.type_ != ElfSectNobits {
if err = elfmap(elfobj, sect); err != nil {
goto bad
}
}
name = fmt.Sprintf("%s(%s)", pkg, sect.name)
s = ctxt.Syms.Lookup(name, localSymVersion)
switch int(sect.flags) & (ElfSectFlagAlloc | ElfSectFlagWrite | ElfSectFlagExec) {
default:
err = fmt.Errorf("unexpected flags for ELF section %s", sect.name)
goto bad
case ElfSectFlagAlloc:
s.Type = obj.SRODATA
case ElfSectFlagAlloc + ElfSectFlagWrite:
if sect.type_ == ElfSectNobits {
s.Type = obj.SNOPTRBSS
} else {
s.Type = obj.SNOPTRDATA
}
case ElfSectFlagAlloc + ElfSectFlagExec:
s.Type = obj.STEXT
}
if sect.name == ".got" || sect.name == ".toc" {
s.Type = obj.SELFGOT
}
if sect.type_ == ElfSectProgbits {
s.P = sect.base
s.P = s.P[:sect.size]
}
s.Size = int64(sect.size)
s.Align = int32(sect.align)
sect.sym = s
}
// enter sub-symbols into symbol table.
// symbol 0 is the null symbol.
symbols = make([]*Symbol, elfobj.nsymtab)
for i := 1; i < elfobj.nsymtab; i++ {
if err = readelfsym(ctxt, elfobj, i, &sym, 1, localSymVersion); err != nil {
goto bad
}
symbols[i] = sym.sym
if sym.type_ != ElfSymTypeFunc && sym.type_ != ElfSymTypeObject && sym.type_ != ElfSymTypeNone {
continue
}
if sym.shndx == ElfSymShnCommon {
s = sym.sym
if uint64(s.Size) < sym.size {
s.Size = int64(sym.size)
}
if s.Type == 0 || s.Type == obj.SXREF {
s.Type = obj.SNOPTRBSS
}
continue
}
if uint(sym.shndx) >= elfobj.nsect || sym.shndx == 0 {
continue
}
// even when we pass needSym == 1 to readelfsym, it might still return nil to skip some unwanted symbols
if sym.sym == nil {
continue
}
sect = &elfobj.sect[sym.shndx]
if sect.sym == nil {
if strings.HasPrefix(sym.name, ".Linfo_string") { // clang does this
continue
}
if sym.name == "" && sym.type_ == 0 && sect.name == ".debug_str" {
// This reportedly happens with clang 3.7 on ARM.
// See issue 13139.
continue
}
if strings.HasPrefix(sym.name, ".LASF") { // gcc on s390x does this
continue
}
Errorf(sym.sym, "%s: sym#%d: ignoring symbol in section %d (type %d)", pn, i, sym.shndx, sym.type_)
continue
}
s = sym.sym
if s.Outer != nil {
if s.Attr.DuplicateOK() {
continue
}
Exitf("%s: duplicate symbol reference: %s in both %s and %s", pn, s.Name, s.Outer.Name, sect.sym.Name)
}
s.Sub = sect.sym.Sub
sect.sym.Sub = s
s.Type = sect.sym.Type | s.Type&^obj.SMASK | obj.SSUB
if !s.Attr.CgoExportDynamic() {
s.Dynimplib = "" // satisfy dynimport
}
s.Value = int64(sym.value)
s.Size = int64(sym.size)
s.Outer = sect.sym
if sect.sym.Type == obj.STEXT {
if s.Attr.External() && !s.Attr.DuplicateOK() {
Errorf(s, "%s: duplicate symbol definition", pn)
}
s.Attr |= AttrExternal
}
if elfobj.machine == ElfMachPower64 {
flag = int(sym.other) >> 5
if 2 <= flag && flag <= 6 {
s.Localentry = 1 << uint(flag-2)
} else if flag == 7 {
Errorf(s, "%s: invalid sym.other 0x%x", pn, sym.other)
}
}
}
// Sort outer lists by address, adding to textp.
// This keeps textp in increasing address order.
for i := 0; uint(i) < elfobj.nsect; i++ {
s = elfobj.sect[i].sym
if s == nil {
continue
}
if s.Sub != nil {
s.Sub = listsort(s.Sub)
}
if s.Type == obj.STEXT {
if s.Attr.OnList() {
log.Fatalf("symbol %s listed multiple times", s.Name)
}
s.Attr |= AttrOnList
ctxt.Textp = append(ctxt.Textp, s)
for s = s.Sub; s != nil; s = s.Sub {
if s.Attr.OnList() {
log.Fatalf("symbol %s listed multiple times", s.Name)
}
s.Attr |= AttrOnList
ctxt.Textp = append(ctxt.Textp, s)
}
}
}
// load relocations
for i := 0; uint(i) < elfobj.nsect; i++ {
rsect = &elfobj.sect[i]
if rsect.type_ != ElfSectRela && rsect.type_ != ElfSectRel {
continue
}
if rsect.info >= uint32(elfobj.nsect) || elfobj.sect[rsect.info].base == nil {
continue
}
sect = &elfobj.sect[rsect.info]
if err = elfmap(elfobj, rsect); err != nil {
goto bad
}
rela = 0
if rsect.type_ == ElfSectRela {
rela = 1
}
n = int(rsect.size / uint64(4+4*is64) / uint64(2+rela))
r = make([]Reloc, n)
p = rsect.base
for j = 0; j < n; j++ {
add = 0
rp = &r[j]
if is64 != 0 {
// 64-bit rel/rela
rp.Off = int32(e.Uint64(p))
p = p[8:]
info = e.Uint64(p)
p = p[8:]
if rela != 0 {
add = e.Uint64(p)
p = p[8:]
}
} else {
// 32-bit rel/rela
rp.Off = int32(e.Uint32(p))
p = p[4:]
info = uint64(e.Uint32(p))
info = info>>8<<32 | info&0xff // convert to 64-bit info
p = p[4:]
if rela != 0 {
add = uint64(e.Uint32(p))
p = p[4:]
}
}
if info&0xffffffff == 0 { // skip R_*_NONE relocation
j--
n--
continue
}
if info>>32 == 0 { // absolute relocation, don't bother reading the null symbol
rp.Sym = nil
} else {
if err = readelfsym(ctxt, elfobj, int(info>>32), &sym, 0, 0); err != nil {
goto bad
}
sym.sym = symbols[info>>32]
if sym.sym == nil {
err = fmt.Errorf("%s#%d: reloc of invalid sym #%d %s shndx=%d type=%d", sect.sym.Name, j, int(info>>32), sym.name, sym.shndx, sym.type_)
goto bad
}
rp.Sym = sym.sym
}
rp.Type = 256 + obj.RelocType(info)
rp.Siz = relSize(ctxt, pn, uint32(info))
if rela != 0 {
rp.Add = int64(add)
} else {
// load addend from image
if rp.Siz == 4 {
rp.Add = int64(e.Uint32(sect.base[rp.Off:]))
} else if rp.Siz == 8 {
rp.Add = int64(e.Uint64(sect.base[rp.Off:]))
} else {
Errorf(nil, "invalid rela size %d", rp.Siz)
}
}
if rp.Siz == 2 {
rp.Add = int64(int16(rp.Add))
}
if rp.Siz == 4 {
rp.Add = int64(int32(rp.Add))
}
}
//print("rel %s %d %d %s %#llx\n", sect->sym->name, rp->type, rp->siz, rp->sym->name, rp->add);
sort.Sort(rbyoff(r[:n]))
// just in case
s = sect.sym
s.R = r
s.R = s.R[:n]
}
return
bad:
Errorf(nil, "%s: malformed elf file: %v", pn, err)
}
// Copy 'data' into program memory starting at address 'addr'. 'byteOrder'
// determines whether the 16-bit words in 'data' are stored in big-endian or
// little-endian form.
func (em *Emulator) LoadProgramBytes(data []uint8, addr uint16, byteOrder binary.ByteOrder) {
for i := 0; i+1 < len(data); i += 2 {
em.ProgMem[addr] = byteOrder.Uint16(data[i:])
addr++
}
}
func ldelf(f *Biobuf, pkg string, length int64, pn string) {
if Debug['v'] != 0 {
fmt.Fprintf(&Bso, "%5.2f ldelf %s\n", obj.Cputime(), pn)
}
Ctxt.Version++
base := int32(Boffset(f))
var add uint64
var e binary.ByteOrder
var elfobj *ElfObj
var err error
var flag int
var hdr *ElfHdrBytes
var hdrbuf [64]uint8
var info uint64
var is64 int
var j int
var n int
var name string
var p []byte
var r []Reloc
var rela int
var rp *Reloc
var rsect *ElfSect
var s *LSym
var sect *ElfSect
var sym ElfSym
var symbols []*LSym
if Bread(f, hdrbuf[:]) != len(hdrbuf) {
goto bad
}
hdr = new(ElfHdrBytes)
binary.Read(bytes.NewReader(hdrbuf[:]), binary.BigEndian, hdr) // only byte arrays; byte order doesn't matter
if string(hdr.Ident[:4]) != "\x7FELF" {
goto bad
}
switch hdr.Ident[5] {
case ElfDataLsb:
e = binary.LittleEndian
case ElfDataMsb:
e = binary.BigEndian
default:
goto bad
}
// read header
elfobj = new(ElfObj)
elfobj.e = e
elfobj.f = f
elfobj.base = int64(base)
elfobj.length = length
elfobj.name = pn
is64 = 0
if hdr.Ident[4] == ElfClass64 {
is64 = 1
hdr := new(ElfHdrBytes64)
binary.Read(bytes.NewReader(hdrbuf[:]), binary.BigEndian, hdr) // only byte arrays; byte order doesn't matter
elfobj.type_ = uint32(e.Uint16(hdr.Type[:]))
elfobj.machine = uint32(e.Uint16(hdr.Machine[:]))
elfobj.version = e.Uint32(hdr.Version[:])
elfobj.phoff = e.Uint64(hdr.Phoff[:])
elfobj.shoff = e.Uint64(hdr.Shoff[:])
elfobj.flags = e.Uint32(hdr.Flags[:])
elfobj.ehsize = uint32(e.Uint16(hdr.Ehsize[:]))
elfobj.phentsize = uint32(e.Uint16(hdr.Phentsize[:]))
elfobj.phnum = uint32(e.Uint16(hdr.Phnum[:]))
elfobj.shentsize = uint32(e.Uint16(hdr.Shentsize[:]))
elfobj.shnum = uint32(e.Uint16(hdr.Shnum[:]))
elfobj.shstrndx = uint32(e.Uint16(hdr.Shstrndx[:]))
} else {
elfobj.type_ = uint32(e.Uint16(hdr.Type[:]))
elfobj.machine = uint32(e.Uint16(hdr.Machine[:]))
elfobj.version = e.Uint32(hdr.Version[:])
elfobj.entry = uint64(e.Uint32(hdr.Entry[:]))
elfobj.phoff = uint64(e.Uint32(hdr.Phoff[:]))
elfobj.shoff = uint64(e.Uint32(hdr.Shoff[:]))
elfobj.flags = e.Uint32(hdr.Flags[:])
elfobj.ehsize = uint32(e.Uint16(hdr.Ehsize[:]))
elfobj.phentsize = uint32(e.Uint16(hdr.Phentsize[:]))
elfobj.phnum = uint32(e.Uint16(hdr.Phnum[:]))
elfobj.shentsize = uint32(e.Uint16(hdr.Shentsize[:]))
elfobj.shnum = uint32(e.Uint16(hdr.Shnum[:]))
elfobj.shstrndx = uint32(e.Uint16(hdr.Shstrndx[:]))
}
elfobj.is64 = is64
if uint32(hdr.Ident[6]) != elfobj.version {
goto bad
}
if e.Uint16(hdr.Type[:]) != ElfTypeRelocatable {
Diag("%s: elf but not elf relocatable object", pn)
return
}
switch Thearch.Thechar {
default:
Diag("%s: elf %s unimplemented", pn, Thestring)
return
case '5':
if e != binary.LittleEndian || elfobj.machine != ElfMachArm || hdr.Ident[4] != ElfClass32 {
Diag("%s: elf object but not arm", pn)
return
}
case '6':
if e != binary.LittleEndian || elfobj.machine != ElfMachAmd64 || hdr.Ident[4] != ElfClass64 {
Diag("%s: elf object but not amd64", pn)
return
}
case '7':
if e != binary.LittleEndian || elfobj.machine != ElfMachArm64 || hdr.Ident[4] != ElfClass64 {
Diag("%s: elf object but not arm64", pn)
return
}
case '8':
if e != binary.LittleEndian || elfobj.machine != ElfMach386 || hdr.Ident[4] != ElfClass32 {
Diag("%s: elf object but not 386", pn)
return
}
case '9':
if elfobj.machine != ElfMachPower64 || hdr.Ident[4] != ElfClass64 {
Diag("%s: elf object but not ppc64", pn)
return
}
}
// load section list into memory.
elfobj.sect = make([]ElfSect, elfobj.shnum)
elfobj.nsect = uint(elfobj.shnum)
for i := 0; uint(i) < elfobj.nsect; i++ {
if Bseek(f, int64(uint64(base)+elfobj.shoff+uint64(int64(i)*int64(elfobj.shentsize))), 0) < 0 {
goto bad
}
sect = &elfobj.sect[i]
if is64 != 0 {
var b ElfSectBytes64
if err = binary.Read(f, e, &b); err != nil {
goto bad
}
sect.nameoff = uint32(e.Uint32(b.Name[:]))
sect.type_ = e.Uint32(b.Type[:])
sect.flags = e.Uint64(b.Flags[:])
sect.addr = e.Uint64(b.Addr[:])
sect.off = e.Uint64(b.Off[:])
sect.size = e.Uint64(b.Size[:])
sect.link = e.Uint32(b.Link[:])
sect.info = e.Uint32(b.Info[:])
sect.align = e.Uint64(b.Align[:])
sect.entsize = e.Uint64(b.Entsize[:])
} else {
var b ElfSectBytes
if err = binary.Read(f, e, &b); err != nil {
goto bad
}
sect.nameoff = uint32(e.Uint32(b.Name[:]))
sect.type_ = e.Uint32(b.Type[:])
sect.flags = uint64(e.Uint32(b.Flags[:]))
sect.addr = uint64(e.Uint32(b.Addr[:]))
sect.off = uint64(e.Uint32(b.Off[:]))
sect.size = uint64(e.Uint32(b.Size[:]))
sect.link = e.Uint32(b.Link[:])
sect.info = e.Uint32(b.Info[:])
sect.align = uint64(e.Uint32(b.Align[:]))
sect.entsize = uint64(e.Uint32(b.Entsize[:]))
}
}
// read section string table and translate names
if elfobj.shstrndx >= uint32(elfobj.nsect) {
err = fmt.Errorf("shstrndx out of range %d >= %d", elfobj.shstrndx, elfobj.nsect)
goto bad
}
sect = &elfobj.sect[elfobj.shstrndx]
if err = elfmap(elfobj, sect); err != nil {
goto bad
}
for i := 0; uint(i) < elfobj.nsect; i++ {
if elfobj.sect[i].nameoff != 0 {
elfobj.sect[i].name = cstring(sect.base[elfobj.sect[i].nameoff:])
}
}
// load string table for symbols into memory.
elfobj.symtab = section(elfobj, ".symtab")
if elfobj.symtab == nil {
// our work is done here - no symbols means nothing can refer to this file
return
}
if elfobj.symtab.link <= 0 || elfobj.symtab.link >= uint32(elfobj.nsect) {
Diag("%s: elf object has symbol table with invalid string table link", pn)
return
}
elfobj.symstr = &elfobj.sect[elfobj.symtab.link]
if is64 != 0 {
elfobj.nsymtab = int(elfobj.symtab.size / ELF64SYMSIZE)
} else {
elfobj.nsymtab = int(elfobj.symtab.size / ELF32SYMSIZE)
}
if err = elfmap(elfobj, elfobj.symtab); err != nil {
goto bad
}
if err = elfmap(elfobj, elfobj.symstr); err != nil {
goto bad
}
// load text and data segments into memory.
// they are not as small as the section lists, but we'll need
// the memory anyway for the symbol images, so we might
// as well use one large chunk.
// create symbols for elfmapped sections
for i := 0; uint(i) < elfobj.nsect; i++ {
sect = &elfobj.sect[i]
if (sect.type_ != ElfSectProgbits && sect.type_ != ElfSectNobits) || sect.flags&ElfSectFlagAlloc == 0 {
continue
}
if sect.type_ != ElfSectNobits {
if err = elfmap(elfobj, sect); err != nil {
goto bad
}
}
name = fmt.Sprintf("%s(%s)", pkg, sect.name)
s = Linklookup(Ctxt, name, Ctxt.Version)
switch int(sect.flags) & (ElfSectFlagAlloc | ElfSectFlagWrite | ElfSectFlagExec) {
default:
err = fmt.Errorf("unexpected flags for ELF section %s", sect.name)
goto bad
case ElfSectFlagAlloc:
s.Type = SRODATA
case ElfSectFlagAlloc + ElfSectFlagWrite:
if sect.type_ == ElfSectNobits {
s.Type = SNOPTRBSS
} else {
s.Type = SNOPTRDATA
}
case ElfSectFlagAlloc + ElfSectFlagExec:
s.Type = STEXT
}
if sect.name == ".got" || sect.name == ".toc" {
s.Type = SELFGOT
}
if sect.type_ == ElfSectProgbits {
s.P = sect.base
s.P = s.P[:sect.size]
}
s.Size = int64(sect.size)
s.Align = int32(sect.align)
sect.sym = s
}
// enter sub-symbols into symbol table.
// symbol 0 is the null symbol.
symbols = make([]*LSym, elfobj.nsymtab)
if symbols == nil {
Diag("out of memory")
Errorexit()
}
for i := 1; i < elfobj.nsymtab; i++ {
if err = readelfsym(elfobj, i, &sym, 1); err != nil {
goto bad
}
symbols[i] = sym.sym
if sym.type_ != ElfSymTypeFunc && sym.type_ != ElfSymTypeObject && sym.type_ != ElfSymTypeNone {
continue
}
if sym.shndx == ElfSymShnCommon {
s = sym.sym
if uint64(s.Size) < sym.size {
s.Size = int64(sym.size)
}
if s.Type == 0 || s.Type == SXREF {
s.Type = SNOPTRBSS
}
continue
}
if uint(sym.shndx) >= elfobj.nsect || sym.shndx == 0 {
continue
}
// even when we pass needSym == 1 to readelfsym, it might still return nil to skip some unwanted symbols
if sym.sym == nil {
continue
}
sect = &elfobj.sect[sym.shndx:][0]
if sect.sym == nil {
if strings.HasPrefix(sym.name, ".Linfo_string") { // clang does this
continue
}
Diag("%s: sym#%d: ignoring %s in section %d (type %d)", pn, i, sym.name, sym.shndx, sym.type_)
continue
}
s = sym.sym
if s.Outer != nil {
if s.Dupok != 0 {
continue
}
Diag("%s: duplicate symbol reference: %s in both %s and %s", pn, s.Name, s.Outer.Name, sect.sym.Name)
Errorexit()
}
s.Sub = sect.sym.Sub
sect.sym.Sub = s
s.Type = sect.sym.Type | s.Type&^SMASK | SSUB
if s.Cgoexport&CgoExportDynamic == 0 {
s.Dynimplib = "" // satisfy dynimport
}
s.Value = int64(sym.value)
s.Size = int64(sym.size)
s.Outer = sect.sym
if sect.sym.Type == STEXT {
if s.External != 0 && s.Dupok == 0 {
Diag("%s: duplicate definition of %s", pn, s.Name)
}
s.External = 1
}
if elfobj.machine == ElfMachPower64 {
flag = int(sym.other) >> 5
if 2 <= flag && flag <= 6 {
s.Localentry = 1 << uint(flag-2)
} else if flag == 7 {
Diag("%s: invalid sym.other 0x%x for %s", pn, sym.other, s.Name)
}
}
}
// Sort outer lists by address, adding to textp.
// This keeps textp in increasing address order.
for i := 0; uint(i) < elfobj.nsect; i++ {
s = elfobj.sect[i].sym
if s == nil {
continue
}
if s.Sub != nil {
s.Sub = listsort(s.Sub, valuecmp, listsubp)
}
if s.Type == STEXT {
if s.Onlist != 0 {
log.Fatalf("symbol %s listed multiple times", s.Name)
}
s.Onlist = 1
if Ctxt.Etextp != nil {
Ctxt.Etextp.Next = s
} else {
Ctxt.Textp = s
}
Ctxt.Etextp = s
for s = s.Sub; s != nil; s = s.Sub {
if s.Onlist != 0 {
log.Fatalf("symbol %s listed multiple times", s.Name)
}
s.Onlist = 1
Ctxt.Etextp.Next = s
Ctxt.Etextp = s
}
}
}
// load relocations
for i := 0; uint(i) < elfobj.nsect; i++ {
rsect = &elfobj.sect[i]
if rsect.type_ != ElfSectRela && rsect.type_ != ElfSectRel {
continue
}
if rsect.info >= uint32(elfobj.nsect) || elfobj.sect[rsect.info].base == nil {
continue
}
sect = &elfobj.sect[rsect.info]
if err = elfmap(elfobj, rsect); err != nil {
goto bad
}
rela = 0
if rsect.type_ == ElfSectRela {
rela = 1
}
n = int(rsect.size / uint64(4+4*is64) / uint64(2+rela))
r = make([]Reloc, n)
p = rsect.base
for j = 0; j < n; j++ {
add = 0
rp = &r[j]
if is64 != 0 {
// 64-bit rel/rela
rp.Off = int32(e.Uint64(p))
p = p[8:]
info = e.Uint64(p)
p = p[8:]
if rela != 0 {
add = e.Uint64(p)
p = p[8:]
}
} else {
// 32-bit rel/rela
rp.Off = int32(e.Uint32(p))
p = p[4:]
info = uint64(e.Uint32(p))
info = info>>8<<32 | info&0xff // convert to 64-bit info
p = p[4:]
if rela != 0 {
add = uint64(e.Uint32(p))
p = p[4:]
}
}
if info&0xffffffff == 0 { // skip R_*_NONE relocation
j--
n--
continue
}
if info>>32 == 0 { // absolute relocation, don't bother reading the null symbol
rp.Sym = nil
} else {
if err = readelfsym(elfobj, int(info>>32), &sym, 0); err != nil {
goto bad
}
sym.sym = symbols[info>>32]
if sym.sym == nil {
err = fmt.Errorf("%s#%d: reloc of invalid sym #%d %s shndx=%d type=%d", sect.sym.Name, j, int(info>>32), sym.name, sym.shndx, sym.type_)
goto bad
}
rp.Sym = sym.sym
}
rp.Type = int32(reltype(pn, int(uint32(info)), &rp.Siz))
if rela != 0 {
rp.Add = int64(add)
} else {
// load addend from image
if rp.Siz == 4 {
rp.Add = int64(e.Uint32(sect.base[rp.Off:]))
} else if rp.Siz == 8 {
rp.Add = int64(e.Uint64(sect.base[rp.Off:]))
} else {
Diag("invalid rela size %d", rp.Siz)
}
}
if rp.Siz == 2 {
rp.Add = int64(int16(rp.Add))
}
if rp.Siz == 4 {
rp.Add = int64(int32(rp.Add))
}
}
//print("rel %s %d %d %s %#llx\n", sect->sym->name, rp->type, rp->siz, rp->sym->name, rp->add);
sort.Sort(rbyoff(r[:n]))
// just in case
s = sect.sym
s.R = r
s.R = s.R[:n]
}
return
bad:
Diag("%s: malformed elf file: %v", pn, err)
}
func unmarshalVal(data []byte, bo binary.ByteOrder, ft FieldType, v reflect.Value) error {
// Do the quick and simple thing.
if v.Type() == ft.ReflectType() {
v.Set(ft.Valuer()(data, bo))
return nil
}
typ := v.Type()
switch typ.Kind() {
case reflect.Ptr:
switch typ {
case bigRatType:
// If the types were the same, it should have been caught above.
return ErrUnsuppConversion{ft, typ}
default:
newV := reflect.New(typ.Elem())
if err := unmarshalVal(data, bo, ft, newV.Elem()); err != nil {
return err
}
v.Set(newV)
}
case reflect.String:
var s string
switch ft.ReflectType().Kind() {
case reflect.Uint8:
s = string(data)
default:
return ErrUnsuppConversion{ft, typ}
}
v.SetString(s)
case reflect.Uint16:
// We can up convert an uint8/byte to a uint16.
if ft.ReflectType().Kind() == reflect.Uint8 {
v.SetUint(uint64(data[0]))
} else {
return ErrUnsuppConversion{ft, typ}
}
case reflect.Int16:
// We can up convert an int8 to an int16.
if ft.ReflectType().Kind() == reflect.Int8 {
v.SetInt(int64(int8(data[0])))
} else {
return ErrUnsuppConversion{ft, typ}
}
case reflect.Uint32:
var u32 uint32
switch ft.ReflectType().Kind() {
case reflect.Uint16:
// We can up convert an uint16 to an uint32.
u32 = uint32(bo.Uint16(data))
case reflect.Uint8:
// We can up convert an uint8 to an uint32.
u32 = uint32(data[0])
default:
return ErrUnsuppConversion{ft, typ}
}
v.SetUint(uint64(u32))
case reflect.Int32:
var i32 int32
switch ft.ReflectType().Kind() {
case reflect.Int16:
// We can up convert an int16 to an int32.
i32 = int32(int16(bo.Uint16(data)))
case reflect.Int8:
// We can up convert an int8 to an int32.
i32 = int32(int8(data[0]))
default:
return ErrUnsuppConversion{ft, typ}
}
v.SetInt(int64(i32))
case reflect.Uint64:
var u64 uint64
switch ft.ReflectType().Kind() {
case reflect.Uint32:
u64 = uint64(bo.Uint32(data))
case reflect.Uint16:
u64 = uint64(bo.Uint16(data))
case reflect.Uint8:
u64 = uint64(data[0])
default:
return ErrUnsuppConversion{ft, typ}
}
v.SetUint(u64)
case reflect.Int64:
var i64 int64
switch ft.ReflectType().Kind() {
case reflect.Int32:
i64 = int64(int32(bo.Uint32(data)))
case reflect.Int16:
i64 = int64(int16(bo.Uint16(data)))
case reflect.Int8:
i64 = int64(int8(data[0]))
default:
return ErrUnsuppConversion{ft, typ}
}
v.SetInt(i64)
case reflect.Uint8, reflect.Int8, reflect.Float32, reflect.Float64:
// If this was not handled at the top, we do not support
// converting other types to these types.
return ErrUnsuppConversion{ft, typ}
}
return nil
}