mirror of
https://github.com/cwinfo/matterbridge.git
synced 2025-07-03 15:27:45 +00:00
Update dependencies (#1851)
This commit is contained in:
Wim
5
vendor/github.com/klauspost/compress/huff0/autogen.go
generated
vendored
5
vendor/github.com/klauspost/compress/huff0/autogen.go
generated
vendored
@ -1,5 +0,0 @@
|
||||
package huff0
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||||
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//go:generate go run generate.go
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//go:generate asmfmt -w decompress_amd64.s
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//go:generate asmfmt -w decompress_8b_amd64.s
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10
vendor/github.com/klauspost/compress/huff0/bitreader.go
generated
vendored
10
vendor/github.com/klauspost/compress/huff0/bitreader.go
generated
vendored
@ -165,11 +165,6 @@ func (b *bitReaderShifted) peekBitsFast(n uint8) uint16 {
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return uint16(b.value >> ((64 - n) & 63))
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}
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// peekTopBits(n) is equvialent to peekBitFast(64 - n)
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func (b *bitReaderShifted) peekTopBits(n uint8) uint16 {
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return uint16(b.value >> n)
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}
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func (b *bitReaderShifted) advance(n uint8) {
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b.bitsRead += n
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b.value <<= n & 63
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@ -220,11 +215,6 @@ func (b *bitReaderShifted) fill() {
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}
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}
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// finished returns true if all bits have been read from the bit stream.
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func (b *bitReaderShifted) finished() bool {
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return b.off == 0 && b.bitsRead >= 64
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}
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||||
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func (b *bitReaderShifted) remaining() uint {
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return b.off*8 + uint(64-b.bitsRead)
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}
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115
vendor/github.com/klauspost/compress/huff0/bitwriter.go
generated
vendored
115
vendor/github.com/klauspost/compress/huff0/bitwriter.go
generated
vendored
@ -5,8 +5,6 @@
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package huff0
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import "fmt"
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// bitWriter will write bits.
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// First bit will be LSB of the first byte of output.
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type bitWriter struct {
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||||
@ -23,14 +21,6 @@ var bitMask16 = [32]uint16{
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0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
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0xFFFF, 0xFFFF} /* up to 16 bits */
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// addBits16NC will add up to 16 bits.
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// It will not check if there is space for them,
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// so the caller must ensure that it has flushed recently.
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func (b *bitWriter) addBits16NC(value uint16, bits uint8) {
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b.bitContainer |= uint64(value&bitMask16[bits&31]) << (b.nBits & 63)
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b.nBits += bits
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}
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// addBits16Clean will add up to 16 bits. value may not contain more set bits than indicated.
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// It will not check if there is space for them, so the caller must ensure that it has flushed recently.
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func (b *bitWriter) addBits16Clean(value uint16, bits uint8) {
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@ -70,104 +60,6 @@ func (b *bitWriter) encTwoSymbols(ct cTable, av, bv byte) {
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b.nBits += encA.nBits + encB.nBits
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}
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// addBits16ZeroNC will add up to 16 bits.
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// It will not check if there is space for them,
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// so the caller must ensure that it has flushed recently.
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// This is fastest if bits can be zero.
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func (b *bitWriter) addBits16ZeroNC(value uint16, bits uint8) {
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if bits == 0 {
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return
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}
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value <<= (16 - bits) & 15
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value >>= (16 - bits) & 15
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b.bitContainer |= uint64(value) << (b.nBits & 63)
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b.nBits += bits
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}
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// flush will flush all pending full bytes.
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// There will be at least 56 bits available for writing when this has been called.
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// Using flush32 is faster, but leaves less space for writing.
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func (b *bitWriter) flush() {
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v := b.nBits >> 3
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switch v {
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case 0:
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return
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case 1:
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||||
b.out = append(b.out,
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byte(b.bitContainer),
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||||
)
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b.bitContainer >>= 1 << 3
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case 2:
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b.out = append(b.out,
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byte(b.bitContainer),
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byte(b.bitContainer>>8),
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)
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b.bitContainer >>= 2 << 3
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case 3:
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b.out = append(b.out,
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byte(b.bitContainer),
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byte(b.bitContainer>>8),
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byte(b.bitContainer>>16),
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||||
)
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b.bitContainer >>= 3 << 3
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case 4:
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||||
b.out = append(b.out,
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byte(b.bitContainer),
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byte(b.bitContainer>>8),
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byte(b.bitContainer>>16),
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byte(b.bitContainer>>24),
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||||
)
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b.bitContainer >>= 4 << 3
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case 5:
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||||
b.out = append(b.out,
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byte(b.bitContainer),
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byte(b.bitContainer>>8),
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byte(b.bitContainer>>16),
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||||
byte(b.bitContainer>>24),
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byte(b.bitContainer>>32),
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||||
)
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b.bitContainer >>= 5 << 3
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case 6:
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||||
b.out = append(b.out,
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byte(b.bitContainer),
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||||
byte(b.bitContainer>>8),
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||||
byte(b.bitContainer>>16),
|
||||
byte(b.bitContainer>>24),
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byte(b.bitContainer>>32),
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||||
byte(b.bitContainer>>40),
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||||
)
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b.bitContainer >>= 6 << 3
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case 7:
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b.out = append(b.out,
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byte(b.bitContainer),
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||||
byte(b.bitContainer>>8),
|
||||
byte(b.bitContainer>>16),
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||||
byte(b.bitContainer>>24),
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||||
byte(b.bitContainer>>32),
|
||||
byte(b.bitContainer>>40),
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||||
byte(b.bitContainer>>48),
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||||
)
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b.bitContainer >>= 7 << 3
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case 8:
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b.out = append(b.out,
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byte(b.bitContainer),
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byte(b.bitContainer>>8),
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byte(b.bitContainer>>16),
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byte(b.bitContainer>>24),
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byte(b.bitContainer>>32),
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byte(b.bitContainer>>40),
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byte(b.bitContainer>>48),
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byte(b.bitContainer>>56),
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||||
)
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b.bitContainer = 0
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b.nBits = 0
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||||
return
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default:
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panic(fmt.Errorf("bits (%d) > 64", b.nBits))
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}
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b.nBits &= 7
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||||
}
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||||
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||||
// flush32 will flush out, so there are at least 32 bits available for writing.
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||||
func (b *bitWriter) flush32() {
|
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if b.nBits < 32 {
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||||
@ -201,10 +93,3 @@ func (b *bitWriter) close() error {
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||||
b.flushAlign()
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||||
return nil
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||||
}
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||||
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||||
// reset and continue writing by appending to out.
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func (b *bitWriter) reset(out []byte) {
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b.bitContainer = 0
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b.nBits = 0
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b.out = out
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}
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||||
10
vendor/github.com/klauspost/compress/huff0/bytereader.go
generated
vendored
10
vendor/github.com/klauspost/compress/huff0/bytereader.go
generated
vendored
@ -20,11 +20,6 @@ func (b *byteReader) init(in []byte) {
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||||
b.off = 0
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}
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||||
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// advance the stream b n bytes.
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func (b *byteReader) advance(n uint) {
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||||
b.off += int(n)
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||||
}
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||||
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// Int32 returns a little endian int32 starting at current offset.
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func (b byteReader) Int32() int32 {
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v3 := int32(b.b[b.off+3])
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@ -43,11 +38,6 @@ func (b byteReader) Uint32() uint32 {
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return (v3 << 24) | (v2 << 16) | (v1 << 8) | v0
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}
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||||
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// unread returns the unread portion of the input.
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func (b byteReader) unread() []byte {
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return b.b[b.off:]
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||||
}
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||||
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||||
// remain will return the number of bytes remaining.
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||||
func (b byteReader) remain() int {
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||||
return len(b.b) - b.off
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||||
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1
vendor/github.com/klauspost/compress/huff0/compress.go
generated
vendored
1
vendor/github.com/klauspost/compress/huff0/compress.go
generated
vendored
@ -404,6 +404,7 @@ func (s *Scratch) canUseTable(c cTable) bool {
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||||
return true
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}
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||||
//lint:ignore U1000 used for debugging
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||||
func (s *Scratch) validateTable(c cTable) bool {
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||||
if len(c) < int(s.symbolLen) {
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||||
return false
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||||
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113
vendor/github.com/klauspost/compress/huff0/decompress.go
generated
vendored
113
vendor/github.com/klauspost/compress/huff0/decompress.go
generated
vendored
@ -11,7 +11,6 @@ import (
|
||||
|
||||
type dTable struct {
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||||
single []dEntrySingle
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||||
double []dEntryDouble
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||||
}
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||||
|
||||
// single-symbols decoding
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||||
@ -19,13 +18,6 @@ type dEntrySingle struct {
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||||
entry uint16
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||||
}
|
||||
|
||||
// double-symbols decoding
|
||||
type dEntryDouble struct {
|
||||
seq [4]byte
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||||
nBits uint8
|
||||
len uint8
|
||||
}
|
||||
|
||||
// Uses special code for all tables that are < 8 bits.
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||||
const use8BitTables = true
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||||
|
||||
@ -35,7 +27,7 @@ const use8BitTables = true
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||||
// If no Scratch is provided a new one is allocated.
|
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// The returned Scratch can be used for encoding or decoding input using this table.
|
||||
func ReadTable(in []byte, s *Scratch) (s2 *Scratch, remain []byte, err error) {
|
||||
s, err = s.prepare(in)
|
||||
s, err = s.prepare(nil)
|
||||
if err != nil {
|
||||
return s, nil, err
|
||||
}
|
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@ -236,108 +228,6 @@ func (d *Decoder) buffer() *[4][256]byte {
|
||||
return &[4][256]byte{}
|
||||
}
|
||||
|
||||
// Decompress1X will decompress a 1X encoded stream.
|
||||
// The cap of the output buffer will be the maximum decompressed size.
|
||||
// The length of the supplied input must match the end of a block exactly.
|
||||
func (d *Decoder) Decompress1X(dst, src []byte) ([]byte, error) {
|
||||
if len(d.dt.single) == 0 {
|
||||
return nil, errors.New("no table loaded")
|
||||
}
|
||||
if use8BitTables && d.actualTableLog <= 8 {
|
||||
return d.decompress1X8Bit(dst, src)
|
||||
}
|
||||
var br bitReaderShifted
|
||||
err := br.init(src)
|
||||
if err != nil {
|
||||
return dst, err
|
||||
}
|
||||
maxDecodedSize := cap(dst)
|
||||
dst = dst[:0]
|
||||
|
||||
// Avoid bounds check by always having full sized table.
|
||||
const tlSize = 1 << tableLogMax
|
||||
const tlMask = tlSize - 1
|
||||
dt := d.dt.single[:tlSize]
|
||||
|
||||
// Use temp table to avoid bound checks/append penalty.
|
||||
bufs := d.buffer()
|
||||
buf := &bufs[0]
|
||||
var off uint8
|
||||
|
||||
for br.off >= 8 {
|
||||
br.fillFast()
|
||||
v := dt[br.peekBitsFast(d.actualTableLog)&tlMask]
|
||||
br.advance(uint8(v.entry))
|
||||
buf[off+0] = uint8(v.entry >> 8)
|
||||
|
||||
v = dt[br.peekBitsFast(d.actualTableLog)&tlMask]
|
||||
br.advance(uint8(v.entry))
|
||||
buf[off+1] = uint8(v.entry >> 8)
|
||||
|
||||
// Refill
|
||||
br.fillFast()
|
||||
|
||||
v = dt[br.peekBitsFast(d.actualTableLog)&tlMask]
|
||||
br.advance(uint8(v.entry))
|
||||
buf[off+2] = uint8(v.entry >> 8)
|
||||
|
||||
v = dt[br.peekBitsFast(d.actualTableLog)&tlMask]
|
||||
br.advance(uint8(v.entry))
|
||||
buf[off+3] = uint8(v.entry >> 8)
|
||||
|
||||
off += 4
|
||||
if off == 0 {
|
||||
if len(dst)+256 > maxDecodedSize {
|
||||
br.close()
|
||||
d.bufs.Put(bufs)
|
||||
return nil, ErrMaxDecodedSizeExceeded
|
||||
}
|
||||
dst = append(dst, buf[:]...)
|
||||
}
|
||||
}
|
||||
|
||||
if len(dst)+int(off) > maxDecodedSize {
|
||||
d.bufs.Put(bufs)
|
||||
br.close()
|
||||
return nil, ErrMaxDecodedSizeExceeded
|
||||
}
|
||||
dst = append(dst, buf[:off]...)
|
||||
|
||||
// br < 8, so uint8 is fine
|
||||
bitsLeft := uint8(br.off)*8 + 64 - br.bitsRead
|
||||
for bitsLeft > 0 {
|
||||
br.fill()
|
||||
if false && br.bitsRead >= 32 {
|
||||
if br.off >= 4 {
|
||||
v := br.in[br.off-4:]
|
||||
v = v[:4]
|
||||
low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
|
||||
br.value = (br.value << 32) | uint64(low)
|
||||
br.bitsRead -= 32
|
||||
br.off -= 4
|
||||
} else {
|
||||
for br.off > 0 {
|
||||
br.value = (br.value << 8) | uint64(br.in[br.off-1])
|
||||
br.bitsRead -= 8
|
||||
br.off--
|
||||
}
|
||||
}
|
||||
}
|
||||
if len(dst) >= maxDecodedSize {
|
||||
d.bufs.Put(bufs)
|
||||
br.close()
|
||||
return nil, ErrMaxDecodedSizeExceeded
|
||||
}
|
||||
v := d.dt.single[br.peekBitsFast(d.actualTableLog)&tlMask]
|
||||
nBits := uint8(v.entry)
|
||||
br.advance(nBits)
|
||||
bitsLeft -= nBits
|
||||
dst = append(dst, uint8(v.entry>>8))
|
||||
}
|
||||
d.bufs.Put(bufs)
|
||||
return dst, br.close()
|
||||
}
|
||||
|
||||
// decompress1X8Bit will decompress a 1X encoded stream with tablelog <= 8.
|
||||
// The cap of the output buffer will be the maximum decompressed size.
|
||||
// The length of the supplied input must match the end of a block exactly.
|
||||
@ -995,7 +885,6 @@ func (d *Decoder) decompress4X8bitExactly(dst, src []byte) ([]byte, error) {
|
||||
|
||||
const shift = 56
|
||||
const tlSize = 1 << 8
|
||||
const tlMask = tlSize - 1
|
||||
single := d.dt.single[:tlSize]
|
||||
|
||||
// Use temp table to avoid bound checks/append penalty.
|
||||
|
||||
488
vendor/github.com/klauspost/compress/huff0/decompress_8b_amd64.s
generated
vendored
488
vendor/github.com/klauspost/compress/huff0/decompress_8b_amd64.s
generated
vendored
@ -1,488 +0,0 @@
|
||||
// +build !appengine
|
||||
// +build gc
|
||||
// +build !noasm
|
||||
|
||||
#include "textflag.h"
|
||||
#include "funcdata.h"
|
||||
#include "go_asm.h"
|
||||
|
||||
#define bufoff 256 // see decompress.go, we're using [4][256]byte table
|
||||
|
||||
// func decompress4x_main_loop_x86(pbr0, pbr1, pbr2, pbr3 *bitReaderShifted,
|
||||
// peekBits uint8, buf *byte, tbl *dEntrySingle) (int, bool)
|
||||
TEXT ·decompress4x_8b_loop_x86(SB), NOSPLIT, $8
|
||||
#define off R8
|
||||
#define buffer DI
|
||||
#define table SI
|
||||
|
||||
#define br_bits_read R9
|
||||
#define br_value R10
|
||||
#define br_offset R11
|
||||
#define peek_bits R12
|
||||
#define exhausted DX
|
||||
|
||||
#define br0 R13
|
||||
#define br1 R14
|
||||
#define br2 R15
|
||||
#define br3 BP
|
||||
|
||||
MOVQ BP, 0(SP)
|
||||
|
||||
XORQ exhausted, exhausted // exhausted = false
|
||||
XORQ off, off // off = 0
|
||||
|
||||
MOVBQZX peekBits+32(FP), peek_bits
|
||||
MOVQ buf+40(FP), buffer
|
||||
MOVQ tbl+48(FP), table
|
||||
|
||||
MOVQ pbr0+0(FP), br0
|
||||
MOVQ pbr1+8(FP), br1
|
||||
MOVQ pbr2+16(FP), br2
|
||||
MOVQ pbr3+24(FP), br3
|
||||
|
||||
main_loop:
|
||||
|
||||
// const stream = 0
|
||||
// br0.fillFast()
|
||||
MOVBQZX bitReaderShifted_bitsRead(br0), br_bits_read
|
||||
MOVQ bitReaderShifted_value(br0), br_value
|
||||
MOVQ bitReaderShifted_off(br0), br_offset
|
||||
|
||||
// if b.bitsRead >= 32 {
|
||||
CMPQ br_bits_read, $32
|
||||
JB skip_fill0
|
||||
|
||||
SUBQ $32, br_bits_read // b.bitsRead -= 32
|
||||
SUBQ $4, br_offset // b.off -= 4
|
||||
|
||||
// v := b.in[b.off-4 : b.off]
|
||||
// v = v[:4]
|
||||
// low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
|
||||
MOVQ bitReaderShifted_in(br0), AX
|
||||
MOVL 0(br_offset)(AX*1), AX // AX = uint32(b.in[b.off:b.off+4])
|
||||
|
||||
// b.value |= uint64(low) << (b.bitsRead & 63)
|
||||
MOVQ br_bits_read, CX
|
||||
SHLQ CL, AX
|
||||
ORQ AX, br_value
|
||||
|
||||
// exhausted = exhausted || (br0.off < 4)
|
||||
CMPQ br_offset, $4
|
||||
SETLT DL
|
||||
ORB DL, DH
|
||||
|
||||
// }
|
||||
skip_fill0:
|
||||
|
||||
// val0 := br0.peekTopBits(peekBits)
|
||||
MOVQ br_value, AX
|
||||
MOVQ peek_bits, CX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v0 := table[val0&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v0
|
||||
|
||||
// br0.advance(uint8(v0.entry))
|
||||
MOVB AH, BL // BL = uint8(v0.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CL, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
// val1 := br0.peekTopBits(peekBits)
|
||||
MOVQ peek_bits, CX
|
||||
MOVQ br_value, AX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v1 := table[val1&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v1
|
||||
|
||||
// br0.advance(uint8(v1.entry))
|
||||
MOVB AH, BH // BH = uint8(v1.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CX, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
// these two writes get coalesced
|
||||
// buf[stream][off] = uint8(v0.entry >> 8)
|
||||
// buf[stream][off+1] = uint8(v1.entry >> 8)
|
||||
MOVW BX, 0(buffer)(off*1)
|
||||
|
||||
// SECOND PART:
|
||||
// val2 := br0.peekTopBits(peekBits)
|
||||
MOVQ br_value, AX
|
||||
MOVQ peek_bits, CX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v2 := table[val0&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v0
|
||||
|
||||
// br0.advance(uint8(v0.entry))
|
||||
MOVB AH, BL // BL = uint8(v0.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CL, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
// val3 := br0.peekTopBits(peekBits)
|
||||
MOVQ peek_bits, CX
|
||||
MOVQ br_value, AX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v3 := table[val1&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v1
|
||||
|
||||
// br0.advance(uint8(v1.entry))
|
||||
MOVB AH, BH // BH = uint8(v1.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CX, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
// these two writes get coalesced
|
||||
// buf[stream][off+2] = uint8(v2.entry >> 8)
|
||||
// buf[stream][off+3] = uint8(v3.entry >> 8)
|
||||
MOVW BX, 0+2(buffer)(off*1)
|
||||
|
||||
// update the bitrader reader structure
|
||||
MOVB br_bits_read, bitReaderShifted_bitsRead(br0)
|
||||
MOVQ br_value, bitReaderShifted_value(br0)
|
||||
MOVQ br_offset, bitReaderShifted_off(br0)
|
||||
|
||||
// const stream = 1
|
||||
// br1.fillFast()
|
||||
MOVBQZX bitReaderShifted_bitsRead(br1), br_bits_read
|
||||
MOVQ bitReaderShifted_value(br1), br_value
|
||||
MOVQ bitReaderShifted_off(br1), br_offset
|
||||
|
||||
// if b.bitsRead >= 32 {
|
||||
CMPQ br_bits_read, $32
|
||||
JB skip_fill1
|
||||
|
||||
SUBQ $32, br_bits_read // b.bitsRead -= 32
|
||||
SUBQ $4, br_offset // b.off -= 4
|
||||
|
||||
// v := b.in[b.off-4 : b.off]
|
||||
// v = v[:4]
|
||||
// low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
|
||||
MOVQ bitReaderShifted_in(br1), AX
|
||||
MOVL 0(br_offset)(AX*1), AX // AX = uint32(b.in[b.off:b.off+4])
|
||||
|
||||
// b.value |= uint64(low) << (b.bitsRead & 63)
|
||||
MOVQ br_bits_read, CX
|
||||
SHLQ CL, AX
|
||||
ORQ AX, br_value
|
||||
|
||||
// exhausted = exhausted || (br1.off < 4)
|
||||
CMPQ br_offset, $4
|
||||
SETLT DL
|
||||
ORB DL, DH
|
||||
|
||||
// }
|
||||
skip_fill1:
|
||||
|
||||
// val0 := br1.peekTopBits(peekBits)
|
||||
MOVQ br_value, AX
|
||||
MOVQ peek_bits, CX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v0 := table[val0&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v0
|
||||
|
||||
// br1.advance(uint8(v0.entry))
|
||||
MOVB AH, BL // BL = uint8(v0.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CL, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
// val1 := br1.peekTopBits(peekBits)
|
||||
MOVQ peek_bits, CX
|
||||
MOVQ br_value, AX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v1 := table[val1&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v1
|
||||
|
||||
// br1.advance(uint8(v1.entry))
|
||||
MOVB AH, BH // BH = uint8(v1.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CX, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
// these two writes get coalesced
|
||||
// buf[stream][off] = uint8(v0.entry >> 8)
|
||||
// buf[stream][off+1] = uint8(v1.entry >> 8)
|
||||
MOVW BX, 256(buffer)(off*1)
|
||||
|
||||
// SECOND PART:
|
||||
// val2 := br1.peekTopBits(peekBits)
|
||||
MOVQ br_value, AX
|
||||
MOVQ peek_bits, CX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v2 := table[val0&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v0
|
||||
|
||||
// br1.advance(uint8(v0.entry))
|
||||
MOVB AH, BL // BL = uint8(v0.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CL, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
// val3 := br1.peekTopBits(peekBits)
|
||||
MOVQ peek_bits, CX
|
||||
MOVQ br_value, AX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v3 := table[val1&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v1
|
||||
|
||||
// br1.advance(uint8(v1.entry))
|
||||
MOVB AH, BH // BH = uint8(v1.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CX, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
// these two writes get coalesced
|
||||
// buf[stream][off+2] = uint8(v2.entry >> 8)
|
||||
// buf[stream][off+3] = uint8(v3.entry >> 8)
|
||||
MOVW BX, 256+2(buffer)(off*1)
|
||||
|
||||
// update the bitrader reader structure
|
||||
MOVB br_bits_read, bitReaderShifted_bitsRead(br1)
|
||||
MOVQ br_value, bitReaderShifted_value(br1)
|
||||
MOVQ br_offset, bitReaderShifted_off(br1)
|
||||
|
||||
// const stream = 2
|
||||
// br2.fillFast()
|
||||
MOVBQZX bitReaderShifted_bitsRead(br2), br_bits_read
|
||||
MOVQ bitReaderShifted_value(br2), br_value
|
||||
MOVQ bitReaderShifted_off(br2), br_offset
|
||||
|
||||
// if b.bitsRead >= 32 {
|
||||
CMPQ br_bits_read, $32
|
||||
JB skip_fill2
|
||||
|
||||
SUBQ $32, br_bits_read // b.bitsRead -= 32
|
||||
SUBQ $4, br_offset // b.off -= 4
|
||||
|
||||
// v := b.in[b.off-4 : b.off]
|
||||
// v = v[:4]
|
||||
// low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
|
||||
MOVQ bitReaderShifted_in(br2), AX
|
||||
MOVL 0(br_offset)(AX*1), AX // AX = uint32(b.in[b.off:b.off+4])
|
||||
|
||||
// b.value |= uint64(low) << (b.bitsRead & 63)
|
||||
MOVQ br_bits_read, CX
|
||||
SHLQ CL, AX
|
||||
ORQ AX, br_value
|
||||
|
||||
// exhausted = exhausted || (br2.off < 4)
|
||||
CMPQ br_offset, $4
|
||||
SETLT DL
|
||||
ORB DL, DH
|
||||
|
||||
// }
|
||||
skip_fill2:
|
||||
|
||||
// val0 := br2.peekTopBits(peekBits)
|
||||
MOVQ br_value, AX
|
||||
MOVQ peek_bits, CX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v0 := table[val0&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v0
|
||||
|
||||
// br2.advance(uint8(v0.entry))
|
||||
MOVB AH, BL // BL = uint8(v0.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CL, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
// val1 := br2.peekTopBits(peekBits)
|
||||
MOVQ peek_bits, CX
|
||||
MOVQ br_value, AX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v1 := table[val1&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v1
|
||||
|
||||
// br2.advance(uint8(v1.entry))
|
||||
MOVB AH, BH // BH = uint8(v1.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CX, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
// these two writes get coalesced
|
||||
// buf[stream][off] = uint8(v0.entry >> 8)
|
||||
// buf[stream][off+1] = uint8(v1.entry >> 8)
|
||||
MOVW BX, 512(buffer)(off*1)
|
||||
|
||||
// SECOND PART:
|
||||
// val2 := br2.peekTopBits(peekBits)
|
||||
MOVQ br_value, AX
|
||||
MOVQ peek_bits, CX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v2 := table[val0&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v0
|
||||
|
||||
// br2.advance(uint8(v0.entry))
|
||||
MOVB AH, BL // BL = uint8(v0.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CL, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
// val3 := br2.peekTopBits(peekBits)
|
||||
MOVQ peek_bits, CX
|
||||
MOVQ br_value, AX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v3 := table[val1&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v1
|
||||
|
||||
// br2.advance(uint8(v1.entry))
|
||||
MOVB AH, BH // BH = uint8(v1.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CX, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
// these two writes get coalesced
|
||||
// buf[stream][off+2] = uint8(v2.entry >> 8)
|
||||
// buf[stream][off+3] = uint8(v3.entry >> 8)
|
||||
MOVW BX, 512+2(buffer)(off*1)
|
||||
|
||||
// update the bitrader reader structure
|
||||
MOVB br_bits_read, bitReaderShifted_bitsRead(br2)
|
||||
MOVQ br_value, bitReaderShifted_value(br2)
|
||||
MOVQ br_offset, bitReaderShifted_off(br2)
|
||||
|
||||
// const stream = 3
|
||||
// br3.fillFast()
|
||||
MOVBQZX bitReaderShifted_bitsRead(br3), br_bits_read
|
||||
MOVQ bitReaderShifted_value(br3), br_value
|
||||
MOVQ bitReaderShifted_off(br3), br_offset
|
||||
|
||||
// if b.bitsRead >= 32 {
|
||||
CMPQ br_bits_read, $32
|
||||
JB skip_fill3
|
||||
|
||||
SUBQ $32, br_bits_read // b.bitsRead -= 32
|
||||
SUBQ $4, br_offset // b.off -= 4
|
||||
|
||||
// v := b.in[b.off-4 : b.off]
|
||||
// v = v[:4]
|
||||
// low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
|
||||
MOVQ bitReaderShifted_in(br3), AX
|
||||
MOVL 0(br_offset)(AX*1), AX // AX = uint32(b.in[b.off:b.off+4])
|
||||
|
||||
// b.value |= uint64(low) << (b.bitsRead & 63)
|
||||
MOVQ br_bits_read, CX
|
||||
SHLQ CL, AX
|
||||
ORQ AX, br_value
|
||||
|
||||
// exhausted = exhausted || (br3.off < 4)
|
||||
CMPQ br_offset, $4
|
||||
SETLT DL
|
||||
ORB DL, DH
|
||||
|
||||
// }
|
||||
skip_fill3:
|
||||
|
||||
// val0 := br3.peekTopBits(peekBits)
|
||||
MOVQ br_value, AX
|
||||
MOVQ peek_bits, CX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v0 := table[val0&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v0
|
||||
|
||||
// br3.advance(uint8(v0.entry))
|
||||
MOVB AH, BL // BL = uint8(v0.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CL, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
// val1 := br3.peekTopBits(peekBits)
|
||||
MOVQ peek_bits, CX
|
||||
MOVQ br_value, AX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v1 := table[val1&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v1
|
||||
|
||||
// br3.advance(uint8(v1.entry))
|
||||
MOVB AH, BH // BH = uint8(v1.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CX, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
// these two writes get coalesced
|
||||
// buf[stream][off] = uint8(v0.entry >> 8)
|
||||
// buf[stream][off+1] = uint8(v1.entry >> 8)
|
||||
MOVW BX, 768(buffer)(off*1)
|
||||
|
||||
// SECOND PART:
|
||||
// val2 := br3.peekTopBits(peekBits)
|
||||
MOVQ br_value, AX
|
||||
MOVQ peek_bits, CX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v2 := table[val0&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v0
|
||||
|
||||
// br3.advance(uint8(v0.entry))
|
||||
MOVB AH, BL // BL = uint8(v0.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CL, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
// val3 := br3.peekTopBits(peekBits)
|
||||
MOVQ peek_bits, CX
|
||||
MOVQ br_value, AX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v3 := table[val1&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v1
|
||||
|
||||
// br3.advance(uint8(v1.entry))
|
||||
MOVB AH, BH // BH = uint8(v1.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CX, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
// these two writes get coalesced
|
||||
// buf[stream][off+2] = uint8(v2.entry >> 8)
|
||||
// buf[stream][off+3] = uint8(v3.entry >> 8)
|
||||
MOVW BX, 768+2(buffer)(off*1)
|
||||
|
||||
// update the bitrader reader structure
|
||||
MOVB br_bits_read, bitReaderShifted_bitsRead(br3)
|
||||
MOVQ br_value, bitReaderShifted_value(br3)
|
||||
MOVQ br_offset, bitReaderShifted_off(br3)
|
||||
|
||||
ADDQ $4, off // off += 2
|
||||
|
||||
TESTB DH, DH // any br[i].ofs < 4?
|
||||
JNZ end
|
||||
|
||||
CMPQ off, $bufoff
|
||||
JL main_loop
|
||||
|
||||
end:
|
||||
MOVQ 0(SP), BP
|
||||
|
||||
MOVB off, ret+56(FP)
|
||||
RET
|
||||
|
||||
#undef off
|
||||
#undef buffer
|
||||
#undef table
|
||||
|
||||
#undef br_bits_read
|
||||
#undef br_value
|
||||
#undef br_offset
|
||||
#undef peek_bits
|
||||
#undef exhausted
|
||||
|
||||
#undef br0
|
||||
#undef br1
|
||||
#undef br2
|
||||
#undef br3
|
||||
197
vendor/github.com/klauspost/compress/huff0/decompress_8b_amd64.s.in
generated
vendored
197
vendor/github.com/klauspost/compress/huff0/decompress_8b_amd64.s.in
generated
vendored
@ -1,197 +0,0 @@
|
||||
// +build !appengine
|
||||
// +build gc
|
||||
// +build !noasm
|
||||
|
||||
#include "textflag.h"
|
||||
#include "funcdata.h"
|
||||
#include "go_asm.h"
|
||||
|
||||
|
||||
#define bufoff 256 // see decompress.go, we're using [4][256]byte table
|
||||
|
||||
//func decompress4x_main_loop_x86(pbr0, pbr1, pbr2, pbr3 *bitReaderShifted,
|
||||
// peekBits uint8, buf *byte, tbl *dEntrySingle) (int, bool)
|
||||
TEXT ·decompress4x_8b_loop_x86(SB), NOSPLIT, $8
|
||||
#define off R8
|
||||
#define buffer DI
|
||||
#define table SI
|
||||
|
||||
#define br_bits_read R9
|
||||
#define br_value R10
|
||||
#define br_offset R11
|
||||
#define peek_bits R12
|
||||
#define exhausted DX
|
||||
|
||||
#define br0 R13
|
||||
#define br1 R14
|
||||
#define br2 R15
|
||||
#define br3 BP
|
||||
|
||||
MOVQ BP, 0(SP)
|
||||
|
||||
XORQ exhausted, exhausted // exhausted = false
|
||||
XORQ off, off // off = 0
|
||||
|
||||
MOVBQZX peekBits+32(FP), peek_bits
|
||||
MOVQ buf+40(FP), buffer
|
||||
MOVQ tbl+48(FP), table
|
||||
|
||||
MOVQ pbr0+0(FP), br0
|
||||
MOVQ pbr1+8(FP), br1
|
||||
MOVQ pbr2+16(FP), br2
|
||||
MOVQ pbr3+24(FP), br3
|
||||
|
||||
main_loop:
|
||||
{{ define "decode_2_values_x86" }}
|
||||
// const stream = {{ var "id" }}
|
||||
// br{{ var "id"}}.fillFast()
|
||||
MOVBQZX bitReaderShifted_bitsRead(br{{ var "id" }}), br_bits_read
|
||||
MOVQ bitReaderShifted_value(br{{ var "id" }}), br_value
|
||||
MOVQ bitReaderShifted_off(br{{ var "id" }}), br_offset
|
||||
|
||||
// if b.bitsRead >= 32 {
|
||||
CMPQ br_bits_read, $32
|
||||
JB skip_fill{{ var "id" }}
|
||||
|
||||
SUBQ $32, br_bits_read // b.bitsRead -= 32
|
||||
SUBQ $4, br_offset // b.off -= 4
|
||||
|
||||
// v := b.in[b.off-4 : b.off]
|
||||
// v = v[:4]
|
||||
// low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
|
||||
MOVQ bitReaderShifted_in(br{{ var "id" }}), AX
|
||||
MOVL 0(br_offset)(AX*1), AX // AX = uint32(b.in[b.off:b.off+4])
|
||||
|
||||
// b.value |= uint64(low) << (b.bitsRead & 63)
|
||||
MOVQ br_bits_read, CX
|
||||
SHLQ CL, AX
|
||||
ORQ AX, br_value
|
||||
|
||||
// exhausted = exhausted || (br{{ var "id"}}.off < 4)
|
||||
CMPQ br_offset, $4
|
||||
SETLT DL
|
||||
ORB DL, DH
|
||||
// }
|
||||
skip_fill{{ var "id" }}:
|
||||
|
||||
// val0 := br{{ var "id"}}.peekTopBits(peekBits)
|
||||
MOVQ br_value, AX
|
||||
MOVQ peek_bits, CX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v0 := table[val0&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v0
|
||||
|
||||
// br{{ var "id"}}.advance(uint8(v0.entry))
|
||||
MOVB AH, BL // BL = uint8(v0.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CL, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
// val1 := br{{ var "id"}}.peekTopBits(peekBits)
|
||||
MOVQ peek_bits, CX
|
||||
MOVQ br_value, AX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v1 := table[val1&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v1
|
||||
|
||||
// br{{ var "id"}}.advance(uint8(v1.entry))
|
||||
MOVB AH, BH // BH = uint8(v1.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CX, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
|
||||
// these two writes get coalesced
|
||||
// buf[stream][off] = uint8(v0.entry >> 8)
|
||||
// buf[stream][off+1] = uint8(v1.entry >> 8)
|
||||
MOVW BX, {{ var "bufofs" }}(buffer)(off*1)
|
||||
|
||||
// SECOND PART:
|
||||
// val2 := br{{ var "id"}}.peekTopBits(peekBits)
|
||||
MOVQ br_value, AX
|
||||
MOVQ peek_bits, CX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v2 := table[val0&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v0
|
||||
|
||||
// br{{ var "id"}}.advance(uint8(v0.entry))
|
||||
MOVB AH, BL // BL = uint8(v0.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CL, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
// val3 := br{{ var "id"}}.peekTopBits(peekBits)
|
||||
MOVQ peek_bits, CX
|
||||
MOVQ br_value, AX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
|
||||
// v3 := table[val1&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v1
|
||||
|
||||
// br{{ var "id"}}.advance(uint8(v1.entry))
|
||||
MOVB AH, BH // BH = uint8(v1.entry >> 8)
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CX, br_value // value <<= n
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
|
||||
// these two writes get coalesced
|
||||
// buf[stream][off+2] = uint8(v2.entry >> 8)
|
||||
// buf[stream][off+3] = uint8(v3.entry >> 8)
|
||||
MOVW BX, {{ var "bufofs" }}+2(buffer)(off*1)
|
||||
|
||||
// update the bitrader reader structure
|
||||
MOVB br_bits_read, bitReaderShifted_bitsRead(br{{ var "id" }})
|
||||
MOVQ br_value, bitReaderShifted_value(br{{ var "id" }})
|
||||
MOVQ br_offset, bitReaderShifted_off(br{{ var "id" }})
|
||||
{{ end }}
|
||||
|
||||
{{ set "id" "0" }}
|
||||
{{ set "ofs" "0" }}
|
||||
{{ set "bufofs" "0" }} {{/* id * bufoff */}}
|
||||
{{ template "decode_2_values_x86" . }}
|
||||
|
||||
{{ set "id" "1" }}
|
||||
{{ set "ofs" "8" }}
|
||||
{{ set "bufofs" "256" }}
|
||||
{{ template "decode_2_values_x86" . }}
|
||||
|
||||
{{ set "id" "2" }}
|
||||
{{ set "ofs" "16" }}
|
||||
{{ set "bufofs" "512" }}
|
||||
{{ template "decode_2_values_x86" . }}
|
||||
|
||||
{{ set "id" "3" }}
|
||||
{{ set "ofs" "24" }}
|
||||
{{ set "bufofs" "768" }}
|
||||
{{ template "decode_2_values_x86" . }}
|
||||
|
||||
ADDQ $4, off // off += 2
|
||||
|
||||
TESTB DH, DH // any br[i].ofs < 4?
|
||||
JNZ end
|
||||
|
||||
CMPQ off, $bufoff
|
||||
JL main_loop
|
||||
end:
|
||||
MOVQ 0(SP), BP
|
||||
|
||||
MOVB off, ret+56(FP)
|
||||
RET
|
||||
#undef off
|
||||
#undef buffer
|
||||
#undef table
|
||||
|
||||
#undef br_bits_read
|
||||
#undef br_value
|
||||
#undef br_offset
|
||||
#undef peek_bits
|
||||
#undef exhausted
|
||||
|
||||
#undef br0
|
||||
#undef br1
|
||||
#undef br2
|
||||
#undef br3
|
||||
181
vendor/github.com/klauspost/compress/huff0/decompress_amd64.go
generated
vendored
181
vendor/github.com/klauspost/compress/huff0/decompress_amd64.go
generated
vendored
@ -2,30 +2,43 @@
|
||||
// +build amd64,!appengine,!noasm,gc
|
||||
|
||||
// This file contains the specialisation of Decoder.Decompress4X
|
||||
// that uses an asm implementation of its main loop.
|
||||
// and Decoder.Decompress1X that use an asm implementation of thir main loops.
|
||||
package huff0
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
|
||||
"github.com/klauspost/compress/internal/cpuinfo"
|
||||
)
|
||||
|
||||
// decompress4x_main_loop_x86 is an x86 assembler implementation
|
||||
// of Decompress4X when tablelog > 8.
|
||||
// go:noescape
|
||||
func decompress4x_main_loop_x86(pbr0, pbr1, pbr2, pbr3 *bitReaderShifted,
|
||||
peekBits uint8, buf *byte, tbl *dEntrySingle) uint8
|
||||
//go:noescape
|
||||
func decompress4x_main_loop_amd64(ctx *decompress4xContext)
|
||||
|
||||
// decompress4x_8b_loop_x86 is an x86 assembler implementation
|
||||
// of Decompress4X when tablelog <= 8 which decodes 4 entries
|
||||
// per loop.
|
||||
// go:noescape
|
||||
func decompress4x_8b_loop_x86(pbr0, pbr1, pbr2, pbr3 *bitReaderShifted,
|
||||
peekBits uint8, buf *byte, tbl *dEntrySingle) uint8
|
||||
//go:noescape
|
||||
func decompress4x_8b_main_loop_amd64(ctx *decompress4xContext)
|
||||
|
||||
// fallback8BitSize is the size where using Go version is faster.
|
||||
const fallback8BitSize = 800
|
||||
|
||||
type decompress4xContext struct {
|
||||
pbr0 *bitReaderShifted
|
||||
pbr1 *bitReaderShifted
|
||||
pbr2 *bitReaderShifted
|
||||
pbr3 *bitReaderShifted
|
||||
peekBits uint8
|
||||
out *byte
|
||||
dstEvery int
|
||||
tbl *dEntrySingle
|
||||
decoded int
|
||||
limit *byte
|
||||
}
|
||||
|
||||
// Decompress4X will decompress a 4X encoded stream.
|
||||
// The length of the supplied input must match the end of a block exactly.
|
||||
// The *capacity* of the dst slice must match the destination size of
|
||||
@ -42,6 +55,7 @@ func (d *Decoder) Decompress4X(dst, src []byte) ([]byte, error) {
|
||||
if cap(dst) < fallback8BitSize && use8BitTables {
|
||||
return d.decompress4X8bit(dst, src)
|
||||
}
|
||||
|
||||
var br [4]bitReaderShifted
|
||||
// Decode "jump table"
|
||||
start := 6
|
||||
@ -71,70 +85,28 @@ func (d *Decoder) Decompress4X(dst, src []byte) ([]byte, error) {
|
||||
const tlMask = tlSize - 1
|
||||
single := d.dt.single[:tlSize]
|
||||
|
||||
// Use temp table to avoid bound checks/append penalty.
|
||||
buf := d.buffer()
|
||||
var off uint8
|
||||
var decoded int
|
||||
|
||||
const debug = false
|
||||
|
||||
// see: bitReaderShifted.peekBitsFast()
|
||||
peekBits := uint8((64 - d.actualTableLog) & 63)
|
||||
|
||||
// Decode 2 values from each decoder/loop.
|
||||
const bufoff = 256
|
||||
for {
|
||||
if br[0].off < 4 || br[1].off < 4 || br[2].off < 4 || br[3].off < 4 {
|
||||
break
|
||||
if len(out) > 4*4 && !(br[0].off < 4 || br[1].off < 4 || br[2].off < 4 || br[3].off < 4) {
|
||||
ctx := decompress4xContext{
|
||||
pbr0: &br[0],
|
||||
pbr1: &br[1],
|
||||
pbr2: &br[2],
|
||||
pbr3: &br[3],
|
||||
peekBits: uint8((64 - d.actualTableLog) & 63), // see: bitReaderShifted.peekBitsFast()
|
||||
out: &out[0],
|
||||
dstEvery: dstEvery,
|
||||
tbl: &single[0],
|
||||
limit: &out[dstEvery-4], // Always stop decoding when first buffer gets here to avoid writing OOB on last.
|
||||
}
|
||||
|
||||
if use8BitTables {
|
||||
off = decompress4x_8b_loop_x86(&br[0], &br[1], &br[2], &br[3], peekBits, &buf[0][0], &single[0])
|
||||
decompress4x_8b_main_loop_amd64(&ctx)
|
||||
} else {
|
||||
off = decompress4x_main_loop_x86(&br[0], &br[1], &br[2], &br[3], peekBits, &buf[0][0], &single[0])
|
||||
}
|
||||
if debug {
|
||||
fmt.Print("DEBUG: ")
|
||||
fmt.Printf("off=%d,", off)
|
||||
for i := 0; i < 4; i++ {
|
||||
fmt.Printf(" br[%d]={bitsRead=%d, value=%x, off=%d}",
|
||||
i, br[i].bitsRead, br[i].value, br[i].off)
|
||||
}
|
||||
fmt.Println("")
|
||||
decompress4x_main_loop_amd64(&ctx)
|
||||
}
|
||||
|
||||
if off != 0 {
|
||||
break
|
||||
}
|
||||
|
||||
if bufoff > dstEvery {
|
||||
d.bufs.Put(buf)
|
||||
return nil, errors.New("corruption detected: stream overrun 1")
|
||||
}
|
||||
copy(out, buf[0][:])
|
||||
copy(out[dstEvery:], buf[1][:])
|
||||
copy(out[dstEvery*2:], buf[2][:])
|
||||
copy(out[dstEvery*3:], buf[3][:])
|
||||
out = out[bufoff:]
|
||||
decoded += bufoff * 4
|
||||
// There must at least be 3 buffers left.
|
||||
if len(out) < dstEvery*3 {
|
||||
d.bufs.Put(buf)
|
||||
return nil, errors.New("corruption detected: stream overrun 2")
|
||||
}
|
||||
}
|
||||
if off > 0 {
|
||||
ioff := int(off)
|
||||
if len(out) < dstEvery*3+ioff {
|
||||
d.bufs.Put(buf)
|
||||
return nil, errors.New("corruption detected: stream overrun 3")
|
||||
}
|
||||
copy(out, buf[0][:off])
|
||||
copy(out[dstEvery:], buf[1][:off])
|
||||
copy(out[dstEvery*2:], buf[2][:off])
|
||||
copy(out[dstEvery*3:], buf[3][:off])
|
||||
decoded += int(off) * 4
|
||||
out = out[off:]
|
||||
decoded = ctx.decoded
|
||||
out = out[decoded/4:]
|
||||
}
|
||||
|
||||
// Decode remaining.
|
||||
@ -150,7 +122,6 @@ func (d *Decoder) Decompress4X(dst, src []byte) ([]byte, error) {
|
||||
for bitsLeft > 0 {
|
||||
br.fill()
|
||||
if offset >= endsAt {
|
||||
d.bufs.Put(buf)
|
||||
return nil, errors.New("corruption detected: stream overrun 4")
|
||||
}
|
||||
|
||||
@ -164,7 +135,6 @@ func (d *Decoder) Decompress4X(dst, src []byte) ([]byte, error) {
|
||||
offset++
|
||||
}
|
||||
if offset != endsAt {
|
||||
d.bufs.Put(buf)
|
||||
return nil, fmt.Errorf("corruption detected: short output block %d, end %d != %d", i, offset, endsAt)
|
||||
}
|
||||
decoded += offset - dstEvery*i
|
||||
@ -173,9 +143,86 @@ func (d *Decoder) Decompress4X(dst, src []byte) ([]byte, error) {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
d.bufs.Put(buf)
|
||||
if dstSize != decoded {
|
||||
return nil, errors.New("corruption detected: short output block")
|
||||
}
|
||||
return dst, nil
|
||||
}
|
||||
|
||||
// decompress4x_main_loop_x86 is an x86 assembler implementation
|
||||
// of Decompress1X when tablelog > 8.
|
||||
//go:noescape
|
||||
func decompress1x_main_loop_amd64(ctx *decompress1xContext)
|
||||
|
||||
// decompress4x_main_loop_x86 is an x86 with BMI2 assembler implementation
|
||||
// of Decompress1X when tablelog > 8.
|
||||
//go:noescape
|
||||
func decompress1x_main_loop_bmi2(ctx *decompress1xContext)
|
||||
|
||||
type decompress1xContext struct {
|
||||
pbr *bitReaderShifted
|
||||
peekBits uint8
|
||||
out *byte
|
||||
outCap int
|
||||
tbl *dEntrySingle
|
||||
decoded int
|
||||
}
|
||||
|
||||
// Error reported by asm implementations
|
||||
const error_max_decoded_size_exeeded = -1
|
||||
|
||||
// Decompress1X will decompress a 1X encoded stream.
|
||||
// The cap of the output buffer will be the maximum decompressed size.
|
||||
// The length of the supplied input must match the end of a block exactly.
|
||||
func (d *Decoder) Decompress1X(dst, src []byte) ([]byte, error) {
|
||||
if len(d.dt.single) == 0 {
|
||||
return nil, errors.New("no table loaded")
|
||||
}
|
||||
var br bitReaderShifted
|
||||
err := br.init(src)
|
||||
if err != nil {
|
||||
return dst, err
|
||||
}
|
||||
maxDecodedSize := cap(dst)
|
||||
dst = dst[:maxDecodedSize]
|
||||
|
||||
const tlSize = 1 << tableLogMax
|
||||
const tlMask = tlSize - 1
|
||||
|
||||
if maxDecodedSize >= 4 {
|
||||
ctx := decompress1xContext{
|
||||
pbr: &br,
|
||||
out: &dst[0],
|
||||
outCap: maxDecodedSize,
|
||||
peekBits: uint8((64 - d.actualTableLog) & 63), // see: bitReaderShifted.peekBitsFast()
|
||||
tbl: &d.dt.single[0],
|
||||
}
|
||||
|
||||
if cpuinfo.HasBMI2() {
|
||||
decompress1x_main_loop_bmi2(&ctx)
|
||||
} else {
|
||||
decompress1x_main_loop_amd64(&ctx)
|
||||
}
|
||||
if ctx.decoded == error_max_decoded_size_exeeded {
|
||||
return nil, ErrMaxDecodedSizeExceeded
|
||||
}
|
||||
|
||||
dst = dst[:ctx.decoded]
|
||||
}
|
||||
|
||||
// br < 8, so uint8 is fine
|
||||
bitsLeft := uint8(br.off)*8 + 64 - br.bitsRead
|
||||
for bitsLeft > 0 {
|
||||
br.fill()
|
||||
if len(dst) >= maxDecodedSize {
|
||||
br.close()
|
||||
return nil, ErrMaxDecodedSizeExceeded
|
||||
}
|
||||
v := d.dt.single[br.peekBitsFast(d.actualTableLog)&tlMask]
|
||||
nBits := uint8(v.entry)
|
||||
br.advance(nBits)
|
||||
bitsLeft -= nBits
|
||||
dst = append(dst, uint8(v.entry>>8))
|
||||
}
|
||||
return dst, br.close()
|
||||
}
|
||||
|
||||
1185
vendor/github.com/klauspost/compress/huff0/decompress_amd64.s
generated
vendored
1185
vendor/github.com/klauspost/compress/huff0/decompress_amd64.s
generated
vendored
File diff suppressed because it is too large
Load Diff
195
vendor/github.com/klauspost/compress/huff0/decompress_amd64.s.in
generated
vendored
195
vendor/github.com/klauspost/compress/huff0/decompress_amd64.s.in
generated
vendored
@ -1,195 +0,0 @@
|
||||
// +build !appengine
|
||||
// +build gc
|
||||
// +build !noasm
|
||||
|
||||
#include "textflag.h"
|
||||
#include "funcdata.h"
|
||||
#include "go_asm.h"
|
||||
|
||||
#ifdef GOAMD64_v4
|
||||
#ifndef GOAMD64_v3
|
||||
#define GOAMD64_v3
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#define bufoff 256 // see decompress.go, we're using [4][256]byte table
|
||||
|
||||
//func decompress4x_main_loop_x86(pbr0, pbr1, pbr2, pbr3 *bitReaderShifted,
|
||||
// peekBits uint8, buf *byte, tbl *dEntrySingle) (int, bool)
|
||||
TEXT ·decompress4x_main_loop_x86(SB), NOSPLIT, $8
|
||||
#define off R8
|
||||
#define buffer DI
|
||||
#define table SI
|
||||
|
||||
#define br_bits_read R9
|
||||
#define br_value R10
|
||||
#define br_offset R11
|
||||
#define peek_bits R12
|
||||
#define exhausted DX
|
||||
|
||||
#define br0 R13
|
||||
#define br1 R14
|
||||
#define br2 R15
|
||||
#define br3 BP
|
||||
|
||||
MOVQ BP, 0(SP)
|
||||
|
||||
XORQ exhausted, exhausted // exhausted = false
|
||||
XORQ off, off // off = 0
|
||||
|
||||
MOVBQZX peekBits+32(FP), peek_bits
|
||||
MOVQ buf+40(FP), buffer
|
||||
MOVQ tbl+48(FP), table
|
||||
|
||||
MOVQ pbr0+0(FP), br0
|
||||
MOVQ pbr1+8(FP), br1
|
||||
MOVQ pbr2+16(FP), br2
|
||||
MOVQ pbr3+24(FP), br3
|
||||
|
||||
main_loop:
|
||||
{{ define "decode_2_values_x86" }}
|
||||
// const stream = {{ var "id" }}
|
||||
// br{{ var "id"}}.fillFast()
|
||||
MOVBQZX bitReaderShifted_bitsRead(br{{ var "id" }}), br_bits_read
|
||||
MOVQ bitReaderShifted_value(br{{ var "id" }}), br_value
|
||||
MOVQ bitReaderShifted_off(br{{ var "id" }}), br_offset
|
||||
|
||||
// We must have at least 2 * max tablelog left
|
||||
CMPQ br_bits_read, $64-22
|
||||
JBE skip_fill{{ var "id" }}
|
||||
|
||||
SUBQ $32, br_bits_read // b.bitsRead -= 32
|
||||
SUBQ $4, br_offset // b.off -= 4
|
||||
|
||||
// v := b.in[b.off-4 : b.off]
|
||||
// v = v[:4]
|
||||
// low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
|
||||
MOVQ bitReaderShifted_in(br{{ var "id" }}), AX
|
||||
|
||||
// b.value |= uint64(low) << (b.bitsRead & 63)
|
||||
#ifdef GOAMD64_v3
|
||||
SHLXQ br_bits_read, 0(br_offset)(AX*1), AX // AX = uint32(b.in[b.off:b.off+4]) << (b.bitsRead & 63)
|
||||
#else
|
||||
MOVL 0(br_offset)(AX*1), AX // AX = uint32(b.in[b.off:b.off+4])
|
||||
MOVQ br_bits_read, CX
|
||||
SHLQ CL, AX
|
||||
#endif
|
||||
|
||||
ORQ AX, br_value
|
||||
|
||||
// exhausted = exhausted || (br{{ var "id"}}.off < 4)
|
||||
CMPQ br_offset, $4
|
||||
SETLT DL
|
||||
ORB DL, DH
|
||||
// }
|
||||
skip_fill{{ var "id" }}:
|
||||
|
||||
// val0 := br{{ var "id"}}.peekTopBits(peekBits)
|
||||
#ifdef GOAMD64_v3
|
||||
SHRXQ peek_bits, br_value, AX // AX = (value >> peek_bits) & mask
|
||||
#else
|
||||
MOVQ br_value, AX
|
||||
MOVQ peek_bits, CX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
#endif
|
||||
|
||||
// v0 := table[val0&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v0
|
||||
|
||||
// br{{ var "id"}}.advance(uint8(v0.entry))
|
||||
MOVB AH, BL // BL = uint8(v0.entry >> 8)
|
||||
|
||||
#ifdef GOAMD64_v3
|
||||
MOVBQZX AL, CX
|
||||
SHLXQ AX, br_value, br_value // value <<= n
|
||||
#else
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CL, br_value // value <<= n
|
||||
#endif
|
||||
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
|
||||
#ifdef GOAMD64_v3
|
||||
SHRXQ peek_bits, br_value, AX // AX = (value >> peek_bits) & mask
|
||||
#else
|
||||
// val1 := br{{ var "id"}}.peekTopBits(peekBits)
|
||||
MOVQ peek_bits, CX
|
||||
MOVQ br_value, AX
|
||||
SHRQ CL, AX // AX = (value >> peek_bits) & mask
|
||||
#endif
|
||||
|
||||
// v1 := table[val1&mask]
|
||||
MOVW 0(table)(AX*2), AX // AX - v1
|
||||
|
||||
// br{{ var "id"}}.advance(uint8(v1.entry))
|
||||
MOVB AH, BH // BH = uint8(v1.entry >> 8)
|
||||
|
||||
#ifdef GOAMD64_v3
|
||||
MOVBQZX AL, CX
|
||||
SHLXQ AX, br_value, br_value // value <<= n
|
||||
#else
|
||||
MOVBQZX AL, CX
|
||||
SHLQ CL, br_value // value <<= n
|
||||
#endif
|
||||
|
||||
ADDQ CX, br_bits_read // bits_read += n
|
||||
|
||||
|
||||
// these two writes get coalesced
|
||||
// buf[stream][off] = uint8(v0.entry >> 8)
|
||||
// buf[stream][off+1] = uint8(v1.entry >> 8)
|
||||
MOVW BX, {{ var "bufofs" }}(buffer)(off*1)
|
||||
|
||||
// update the bitrader reader structure
|
||||
MOVB br_bits_read, bitReaderShifted_bitsRead(br{{ var "id" }})
|
||||
MOVQ br_value, bitReaderShifted_value(br{{ var "id" }})
|
||||
MOVQ br_offset, bitReaderShifted_off(br{{ var "id" }})
|
||||
{{ end }}
|
||||
|
||||
{{ set "id" "0" }}
|
||||
{{ set "ofs" "0" }}
|
||||
{{ set "bufofs" "0" }} {{/* id * bufoff */}}
|
||||
{{ template "decode_2_values_x86" . }}
|
||||
|
||||
{{ set "id" "1" }}
|
||||
{{ set "ofs" "8" }}
|
||||
{{ set "bufofs" "256" }}
|
||||
{{ template "decode_2_values_x86" . }}
|
||||
|
||||
{{ set "id" "2" }}
|
||||
{{ set "ofs" "16" }}
|
||||
{{ set "bufofs" "512" }}
|
||||
{{ template "decode_2_values_x86" . }}
|
||||
|
||||
{{ set "id" "3" }}
|
||||
{{ set "ofs" "24" }}
|
||||
{{ set "bufofs" "768" }}
|
||||
{{ template "decode_2_values_x86" . }}
|
||||
|
||||
ADDQ $2, off // off += 2
|
||||
|
||||
TESTB DH, DH // any br[i].ofs < 4?
|
||||
JNZ end
|
||||
|
||||
CMPQ off, $bufoff
|
||||
JL main_loop
|
||||
end:
|
||||
MOVQ 0(SP), BP
|
||||
|
||||
MOVB off, ret+56(FP)
|
||||
RET
|
||||
#undef off
|
||||
#undef buffer
|
||||
#undef table
|
||||
|
||||
#undef br_bits_read
|
||||
#undef br_value
|
||||
#undef br_offset
|
||||
#undef peek_bits
|
||||
#undef exhausted
|
||||
|
||||
#undef br0
|
||||
#undef br1
|
||||
#undef br2
|
||||
#undef br3
|
||||
102
vendor/github.com/klauspost/compress/huff0/decompress_generic.go
generated
vendored
102
vendor/github.com/klauspost/compress/huff0/decompress_generic.go
generated
vendored
@ -191,3 +191,105 @@ func (d *Decoder) Decompress4X(dst, src []byte) ([]byte, error) {
|
||||
}
|
||||
return dst, nil
|
||||
}
|
||||
|
||||
// Decompress1X will decompress a 1X encoded stream.
|
||||
// The cap of the output buffer will be the maximum decompressed size.
|
||||
// The length of the supplied input must match the end of a block exactly.
|
||||
func (d *Decoder) Decompress1X(dst, src []byte) ([]byte, error) {
|
||||
if len(d.dt.single) == 0 {
|
||||
return nil, errors.New("no table loaded")
|
||||
}
|
||||
if use8BitTables && d.actualTableLog <= 8 {
|
||||
return d.decompress1X8Bit(dst, src)
|
||||
}
|
||||
var br bitReaderShifted
|
||||
err := br.init(src)
|
||||
if err != nil {
|
||||
return dst, err
|
||||
}
|
||||
maxDecodedSize := cap(dst)
|
||||
dst = dst[:0]
|
||||
|
||||
// Avoid bounds check by always having full sized table.
|
||||
const tlSize = 1 << tableLogMax
|
||||
const tlMask = tlSize - 1
|
||||
dt := d.dt.single[:tlSize]
|
||||
|
||||
// Use temp table to avoid bound checks/append penalty.
|
||||
bufs := d.buffer()
|
||||
buf := &bufs[0]
|
||||
var off uint8
|
||||
|
||||
for br.off >= 8 {
|
||||
br.fillFast()
|
||||
v := dt[br.peekBitsFast(d.actualTableLog)&tlMask]
|
||||
br.advance(uint8(v.entry))
|
||||
buf[off+0] = uint8(v.entry >> 8)
|
||||
|
||||
v = dt[br.peekBitsFast(d.actualTableLog)&tlMask]
|
||||
br.advance(uint8(v.entry))
|
||||
buf[off+1] = uint8(v.entry >> 8)
|
||||
|
||||
// Refill
|
||||
br.fillFast()
|
||||
|
||||
v = dt[br.peekBitsFast(d.actualTableLog)&tlMask]
|
||||
br.advance(uint8(v.entry))
|
||||
buf[off+2] = uint8(v.entry >> 8)
|
||||
|
||||
v = dt[br.peekBitsFast(d.actualTableLog)&tlMask]
|
||||
br.advance(uint8(v.entry))
|
||||
buf[off+3] = uint8(v.entry >> 8)
|
||||
|
||||
off += 4
|
||||
if off == 0 {
|
||||
if len(dst)+256 > maxDecodedSize {
|
||||
br.close()
|
||||
d.bufs.Put(bufs)
|
||||
return nil, ErrMaxDecodedSizeExceeded
|
||||
}
|
||||
dst = append(dst, buf[:]...)
|
||||
}
|
||||
}
|
||||
|
||||
if len(dst)+int(off) > maxDecodedSize {
|
||||
d.bufs.Put(bufs)
|
||||
br.close()
|
||||
return nil, ErrMaxDecodedSizeExceeded
|
||||
}
|
||||
dst = append(dst, buf[:off]...)
|
||||
|
||||
// br < 8, so uint8 is fine
|
||||
bitsLeft := uint8(br.off)*8 + 64 - br.bitsRead
|
||||
for bitsLeft > 0 {
|
||||
br.fill()
|
||||
if false && br.bitsRead >= 32 {
|
||||
if br.off >= 4 {
|
||||
v := br.in[br.off-4:]
|
||||
v = v[:4]
|
||||
low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
|
||||
br.value = (br.value << 32) | uint64(low)
|
||||
br.bitsRead -= 32
|
||||
br.off -= 4
|
||||
} else {
|
||||
for br.off > 0 {
|
||||
br.value = (br.value << 8) | uint64(br.in[br.off-1])
|
||||
br.bitsRead -= 8
|
||||
br.off--
|
||||
}
|
||||
}
|
||||
}
|
||||
if len(dst) >= maxDecodedSize {
|
||||
d.bufs.Put(bufs)
|
||||
br.close()
|
||||
return nil, ErrMaxDecodedSizeExceeded
|
||||
}
|
||||
v := d.dt.single[br.peekBitsFast(d.actualTableLog)&tlMask]
|
||||
nBits := uint8(v.entry)
|
||||
br.advance(nBits)
|
||||
bitsLeft -= nBits
|
||||
dst = append(dst, uint8(v.entry>>8))
|
||||
}
|
||||
d.bufs.Put(bufs)
|
||||
return dst, br.close()
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user