1//===-- fixunsdfsivfp.S - Implement fixunsdfsivfp -------------------------===// 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 __fixunsdfsivfp(double a); 13// 14// Converts double precision float to a 32-bit unsigned int rounding towards 15// zero. All negative values become zero. 16// Uses Darwin calling convention where a double precision parameter is 17// passed in GPR register pair. 18// 19 .syntax unified 20 .p2align 2 21DEFINE_COMPILERRT_FUNCTION(__fixunsdfsivfp) 22#if defined(COMPILER_RT_ARMHF_TARGET) 23 vcvt.u32.f64 s0, d0 24 vmov r0, s0 25#else 26 vmov d7, r0, r1 // load double register from R0/R1 27 vcvt.u32.f64 s15, d7 // convert double to 32-bit int into s15 28 vmov r0, s15 // move s15 to result register 29#endif 30 bx lr 31END_COMPILERRT_FUNCTION(__fixunsdfsivfp) 32 33NO_EXEC_STACK_DIRECTIVE 34 35