1*3cab2bb3Spatrick//===-- subsf3vfp.S - Implement subsf3vfp ---------------------------------===// 2*3cab2bb3Spatrick// 3*3cab2bb3Spatrick// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*3cab2bb3Spatrick// See https://llvm.org/LICENSE.txt for license information. 5*3cab2bb3Spatrick// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*3cab2bb3Spatrick// 7*3cab2bb3Spatrick//===----------------------------------------------------------------------===// 8*3cab2bb3Spatrick 9*3cab2bb3Spatrick#include "../assembly.h" 10*3cab2bb3Spatrick 11*3cab2bb3Spatrick// 12*3cab2bb3Spatrick// extern float __subsf3vfp(float a, float b); 13*3cab2bb3Spatrick// 14*3cab2bb3Spatrick// Returns the difference between two single precision floating point numbers 15*3cab2bb3Spatrick// using the Darwin calling convention where single arguments are passsed 16*3cab2bb3Spatrick// like 32-bit ints. 17*3cab2bb3Spatrick// 18*3cab2bb3Spatrick .syntax unified 19*3cab2bb3Spatrick .p2align 2 20*3cab2bb3SpatrickDEFINE_COMPILERRT_FUNCTION(__subsf3vfp) 21*3cab2bb3Spatrick#if defined(COMPILER_RT_ARMHF_TARGET) 22*3cab2bb3Spatrick vsub.f32 s0, s0, s1 23*3cab2bb3Spatrick#else 24*3cab2bb3Spatrick vmov s14, r0 // move first param from r0 into float register 25*3cab2bb3Spatrick vmov s15, r1 // move second param from r1 into float register 26*3cab2bb3Spatrick vsub.f32 s14, s14, s15 27*3cab2bb3Spatrick vmov r0, s14 // move result back to r0 28*3cab2bb3Spatrick#endif 29*3cab2bb3Spatrick bx lr 30*3cab2bb3SpatrickEND_COMPILERRT_FUNCTION(__subsf3vfp) 31*3cab2bb3Spatrick 32*3cab2bb3SpatrickNO_EXEC_STACK_DIRECTIVE 33*3cab2bb3Spatrick 34