forked from OSchip/llvm-project
30 lines
868 B
ArmAsm
30 lines
868 B
ArmAsm
//===-- negsf2vfp.S - Implement negsf2vfp ---------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "../assembly.h"
|
|
|
|
//
|
|
// extern float __negsf2vfp(float a);
|
|
//
|
|
// Returns the negation of a single precision floating point numbers using the
|
|
// Darwin calling convention where single arguments are passsed like 32-bit ints
|
|
//
|
|
.syntax unified
|
|
.p2align 2
|
|
DEFINE_COMPILERRT_FUNCTION(__negsf2vfp)
|
|
#if defined(COMPILER_RT_ARMHF_TARGET)
|
|
vneg.f32 s0, s0
|
|
#else
|
|
eor r0, r0, #-2147483648 // flip sign bit on float in r0
|
|
#endif
|
|
bx lr
|
|
END_COMPILERRT_FUNCTION(__negsf2vfp)
|
|
|
|
NO_EXEC_STACK_DIRECTIVE
|
|
|