diff options
Diffstat (limited to 'src/pkg/hash/crc32/crc32_amd64p32.s')
| -rw-r--r-- | src/pkg/hash/crc32/crc32_amd64p32.s | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/src/pkg/hash/crc32/crc32_amd64p32.s b/src/pkg/hash/crc32/crc32_amd64p32.s deleted file mode 100644 index b6770eba3..000000000 --- a/src/pkg/hash/crc32/crc32_amd64p32.s +++ /dev/null @@ -1,64 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -#include "textflag.h" - -// func castagnoliSSE42(crc uint32, p []byte) uint32 -TEXT ·castagnoliSSE42(SB),NOSPLIT,$0 - MOVL crc+0(FP), AX // CRC value - MOVL p+4(FP), SI // data pointer - MOVL p_len+8(FP), CX // len(p) - - NOTL AX - - /* If there's less than 8 bytes to process, we do it byte-by-byte. */ - CMPQ CX, $8 - JL cleanup - - /* Process individual bytes until the input is 8-byte aligned. */ -startup: - MOVQ SI, BX - ANDQ $7, BX - JZ aligned - - CRC32B (SI), AX - DECQ CX - INCQ SI - JMP startup - -aligned: - /* The input is now 8-byte aligned and we can process 8-byte chunks. */ - CMPQ CX, $8 - JL cleanup - - CRC32Q (SI), AX - ADDQ $8, SI - SUBQ $8, CX - JMP aligned - -cleanup: - /* We may have some bytes left over that we process one at a time. */ - CMPQ CX, $0 - JE done - - CRC32B (SI), AX - INCQ SI - DECQ CX - JMP cleanup - -done: - NOTL AX - MOVL AX, ret+16(FP) - RET - -// func haveSSE42() bool -TEXT ·haveSSE42(SB),NOSPLIT,$0 - XORQ AX, AX - INCL AX - CPUID - SHRQ $20, CX - ANDQ $1, CX - MOVB CX, ret+0(FP) - RET - |