diff options
Diffstat (limited to 'vendor/github.com/tmthrgd/go-hex/hex_amd64.go')
-rw-r--r-- | vendor/github.com/tmthrgd/go-hex/hex_amd64.go | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/vendor/github.com/tmthrgd/go-hex/hex_amd64.go b/vendor/github.com/tmthrgd/go-hex/hex_amd64.go deleted file mode 100644 index 0f9f9a5c7..000000000 --- a/vendor/github.com/tmthrgd/go-hex/hex_amd64.go +++ /dev/null @@ -1,94 +0,0 @@ -// Copyright 2016 Tom Thorogood. All rights reserved. -// Use of this source code is governed by a -// Modified BSD License license that can be found in -// the LICENSE file. - -// +build amd64,!gccgo,!appengine - -package hex - -import "golang.org/x/sys/cpu" - -// RawEncode encodes src into EncodedLen(len(src)) -// bytes of dst. As a convenience, it returns the number -// of bytes written to dst, but this value is always EncodedLen(len(src)). -// RawEncode implements hexadecimal encoding for a given alphabet. -func RawEncode(dst, src, alpha []byte) int { - if len(alpha) != 16 { - panic("invalid alphabet") - } - - if len(dst) < len(src)*2 { - panic("dst buffer is too small") - } - - if len(src) == 0 { - return 0 - } - - switch { - case cpu.X86.HasAVX: - encodeAVX(&dst[0], &src[0], uint64(len(src)), &alpha[0]) - case cpu.X86.HasSSE41: - encodeSSE(&dst[0], &src[0], uint64(len(src)), &alpha[0]) - default: - encodeGeneric(dst, src, alpha) - } - - return len(src) * 2 -} - -// Decode decodes src into DecodedLen(len(src)) bytes, returning the actual -// number of bytes written to dst. -// -// If Decode encounters invalid input, it returns an error describing the failure. -func Decode(dst, src []byte) (int, error) { - if len(src)%2 != 0 { - return 0, errLength - } - - if len(dst) < len(src)/2 { - panic("dst buffer is too small") - } - - if len(src) == 0 { - return 0, nil - } - - var ( - n uint64 - ok bool - ) - switch { - case cpu.X86.HasAVX: - n, ok = decodeAVX(&dst[0], &src[0], uint64(len(src))) - case cpu.X86.HasSSE41: - n, ok = decodeSSE(&dst[0], &src[0], uint64(len(src))) - default: - n, ok = decodeGeneric(dst, src) - } - - if !ok { - return 0, InvalidByteError(src[n]) - } - - return len(src) / 2, nil -} - -//go:generate go run asm_gen.go - -// This function is implemented in hex_encode_amd64.s -//go:noescape -func encodeAVX(dst *byte, src *byte, len uint64, alpha *byte) - -// This function is implemented in hex_encode_amd64.s -//go:noescape -func encodeSSE(dst *byte, src *byte, len uint64, alpha *byte) - -// This function is implemented in hex_decode_amd64.s -//go:noescape -func decodeAVX(dst *byte, src *byte, len uint64) (n uint64, ok bool) - -// This function is implemented in hex_decode_amd64.s -//go:noescape -func decodeSSE(dst *byte, src *byte, len uint64) (n uint64, ok bool) |