1*0b57cec5SDimitry Andric//===-- subsf3vfp.S - Implement subsf3vfp ---------------------------------===// 2*0b57cec5SDimitry Andric// 3*0b57cec5SDimitry Andric// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*0b57cec5SDimitry Andric// See https://llvm.org/LICENSE.txt for license information. 5*0b57cec5SDimitry Andric// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*0b57cec5SDimitry Andric// 7*0b57cec5SDimitry Andric//===----------------------------------------------------------------------===// 8*0b57cec5SDimitry Andric 9*0b57cec5SDimitry Andric#include "../assembly.h" 10*0b57cec5SDimitry Andric 11*0b57cec5SDimitry Andric// 12*0b57cec5SDimitry Andric// extern float __subsf3vfp(float a, float b); 13*0b57cec5SDimitry Andric// 14*0b57cec5SDimitry Andric// Returns the difference between two single precision floating point numbers 15*0b57cec5SDimitry Andric// using the Darwin calling convention where single arguments are passsed 16*0b57cec5SDimitry Andric// like 32-bit ints. 17*0b57cec5SDimitry Andric// 18*0b57cec5SDimitry Andric .syntax unified 19*0b57cec5SDimitry Andric .p2align 2 20*0b57cec5SDimitry AndricDEFINE_COMPILERRT_FUNCTION(__subsf3vfp) 21*0b57cec5SDimitry Andric#if defined(COMPILER_RT_ARMHF_TARGET) 22*0b57cec5SDimitry Andric vsub.f32 s0, s0, s1 23*0b57cec5SDimitry Andric#else 24*0b57cec5SDimitry Andric vmov s14, r0 // move first param from r0 into float register 25*0b57cec5SDimitry Andric vmov s15, r1 // move second param from r1 into float register 26*0b57cec5SDimitry Andric vsub.f32 s14, s14, s15 27*0b57cec5SDimitry Andric vmov r0, s14 // move result back to r0 28*0b57cec5SDimitry Andric#endif 29*0b57cec5SDimitry Andric bx lr 30*0b57cec5SDimitry AndricEND_COMPILERRT_FUNCTION(__subsf3vfp) 31*0b57cec5SDimitry Andric 32*0b57cec5SDimitry AndricNO_EXEC_STACK_DIRECTIVE 33*0b57cec5SDimitry Andric 34