summaryrefslogtreecommitdiffstats
path: root/src/reflect/float32reg_ppc64x.s
blob: a4deb18427af0f81441a2e247fe7304facc471b7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
// Copyright 2021 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 ppc64 || ppc64le

#include "textflag.h"

// On PPC64, the float32 becomes a float64
// when loaded in a register, different from
// other platforms. These functions are
// needed to ensure correct conversions on PPC64.

// Convert float32->uint64
TEXT ·archFloat32ToReg(SB),NOSPLIT,$0-16
	FMOVS	val+0(FP), F1
	FMOVD	F1, ret+8(FP)
	RET

// Convert uint64->float32
TEXT ·archFloat32FromReg(SB),NOSPLIT,$0-12
	FMOVD	reg+0(FP), F1
	// Normally a float64->float32 conversion
	// would need rounding, but that is not needed
	// here since the uint64 was originally converted
	// from float32, and should be avoided to
	// preserve SNaN values.
	FMOVS	F1, ret+8(FP)
	RET