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// Copyright 2015 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.
//go:build gc
// +build gc
#include "textflag.h"
// try to run "vmov.f64 d0, d0" instruction
TEXT ·useVFPv1(SB),NOSPLIT,$0
WORD $0xeeb00b40 // vmov.f64 d0, d0
RET
// try to run VFPv3-only "vmov.f64 d0, #112" instruction
TEXT ·useVFPv3(SB),NOSPLIT,$0
WORD $0xeeb70b00 // vmov.f64 d0, #112
RET
// try to run ARMv6K (or above) "ldrexd" instruction
TEXT ·useARMv6K(SB),NOSPLIT,$32
MOVW R13, R2
BIC $15, R13
WORD $0xe1bd0f9f // ldrexd r0, r1, [sp]
WORD $0xf57ff01f // clrex
MOVW R2, R13
RET
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