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