github.com/primecitizens/pcz/std@v0.2.1/runtime/duff_s390x.s (about)

     1  // SPDX-License-Identifier: Apache-2.0
     2  // Copyright 2023 The Prime Citizens
     3  //
     4  // Copyright 2019 The Go Authors. All rights reserved.
     5  // Use of this source code is governed by a BSD-style
     6  // license that can be found in the LICENSE file.
     7  
     8  //go:build pcz && s390x
     9  
    10  #include "textflag.h"
    11  
    12  // s390x can copy/zero 1-256 bytes with a single instruction,
    13  // so there's no need for these, except to satisfy the prototypes
    14  // in stubs.go.
    15  
    16  TEXT runtime·duffzero(SB),NOSPLIT|NOFRAME,$0-0
    17  	MOVD $0, 2(R0)
    18  	RET
    19  
    20  TEXT runtime·duffcopy(SB),NOSPLIT|NOFRAME,$0-0
    21  	MOVD $0, 2(R0)
    22  	RET