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1//===-- fixdfsivfp.S - Implement fixdfsivfp -----------------------===//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 int __fixdfsivfp(double a);13//14// Converts double precision float to a 32-bit int rounding towards zero.15// Uses Darwin calling convention where a double precision parameter is16// passed in GPR register pair.17//18 .syntax unified19 .p2align 220DEFINE_COMPILERRT_FUNCTION(__fixdfsivfp)21#if defined(COMPILER_RT_ARMHF_TARGET)22 vcvt.s32.f64 s0, d023 vmov r0, s024#else25 VMOV_TO_DOUBLE(d7, r0, r1) // load double register from R0/R126 vcvt.s32.f64 s15, d7 // convert double to 32-bit int into s1527 vmov r0, s15 // move s15 to result register28#endif29 bx lr30END_COMPILERRT_FUNCTION(__fixdfsivfp)31 32NO_EXEC_STACK_DIRECTIVE33 34