llvm-project/compiler-rt/lib/arm/negdf2vfp.S

24 lines
775 B
ArmAsm

//===-- negdf2vfp.S - Implement negdf2vfp ---------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "../assembly.h"
//
// extern double __negdf2vfp(double a, double b);
//
// Returns the negation a double precision floating point numbers using the
// Darwin calling convention where double arguments are passsed in GPR pairs.
//
.syntax unified
.align 2
DEFINE_COMPILERRT_FUNCTION(__negdf2vfp)
eor r1, r1, #-2147483648 // flip sign bit on double in r0/r1 pair
bx lr
END_COMPILERRT_FUNCTION(__negdf2vfp)