1//===-- fixunssfsivfp.S - Implement fixunssfsivfp -------------------------===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8 9#include "../assembly.h" 10 11// 12// extern unsigned int __fixunssfsivfp(float a); 13// 14// Converts single precision float to a 32-bit unsigned int rounding towards 15// zero. All negative values become zero. 16// Uses Darwin calling convention where a single precision parameter is 17// passed in a GPR.. 18// 19 .syntax unified 20 .p2align 2 21DEFINE_COMPILERRT_FUNCTION(__fixunssfsivfp) 22#if defined(COMPILER_RT_ARMHF_TARGET) 23 vcvt.u32.f32 s0, s0 24 vmov r0, s0 25#else 26 vmov s15, r0 // load float register from R0 27 vcvt.u32.f32 s15, s15 // convert single to 32-bit unsigned into s15 28 vmov r0, s15 // move s15 to result register 29#endif 30 bx lr 31END_COMPILERRT_FUNCTION(__fixunssfsivfp) 32 33NO_EXEC_STACK_DIRECTIVE 34 35