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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-exception6//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 towards15// zero. All negative values become zero.16// Uses Darwin calling convention where a double precision parameter is17// passed in GPR register pair.18//19 .syntax unified20 .p2align 221DEFINE_COMPILERRT_FUNCTION(__fixunsdfsivfp)22#if defined(COMPILER_RT_ARMHF_TARGET)23 vcvt.u32.f64 s0, d024 vmov r0, s025#else26 VMOV_TO_DOUBLE(d7, r0, r1) // load double register from R0/R127 vcvt.u32.f64 s15, d7 // convert double to 32-bit int into s1528 vmov r0, s15 // move s15 to result register29#endif30 bx lr31END_COMPILERRT_FUNCTION(__fixunsdfsivfp)32 33NO_EXEC_STACK_DIRECTIVE34 35