1//===-- negdf2vfp.S - Implement negdf2vfp ---------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "../assembly.h"
10
11//
12// extern double __negdf2vfp(double a, double b);
13//
14// Returns the negation a double precision floating point numbers using the
15// Darwin calling convention where double arguments are passsed in GPR pairs.
16//
17	.syntax unified
18	.p2align 2
19DEFINE_COMPILERRT_FUNCTION(__negdf2vfp)
20#if defined(COMPILER_RT_ARMHF_TARGET)
21	vneg.f64 d0, d0
22#else
23	eor	r1, r1, #-2147483648	// flip sign bit on double in r0/r1 pair
24#endif
25	bx	lr
26END_COMPILERRT_FUNCTION(__negdf2vfp)
27
28NO_EXEC_STACK_DIRECTIVE
29
30