1//===-- negdf2vfp.S - Implement negdf2vfp ---------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10#include "../assembly.h" 11 12// 13// extern double __negdf2vfp(double a, double b); 14// 15// Returns the negation a double precision floating point numbers using the 16// Darwin calling convention where double arguments are passsed in GPR pairs. 17// 18 .syntax unified 19 .p2align 2 20DEFINE_COMPILERRT_FUNCTION(__negdf2vfp) 21 eor r1, r1, #-2147483648 // flip sign bit on double in r0/r1 pair 22 bx lr 23END_COMPILERRT_FUNCTION(__negdf2vfp) 24 25NO_EXEC_STACK_DIRECTIVE 26 27