1//===-- fixdfsivfp.S - Implement fixdfsivfp -----------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10#include "../assembly.h" 11 12// 13// extern int __fixdfsivfp(double a); 14// 15// Converts double precision float to a 32-bit int rounding towards 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(__fixdfsivfp) 22 vmov d7, r0, r1 // load double register from R0/R1 23 vcvt.s32.f64 s15, d7 // convert double to 32-bit int into s15 24 vmov r0, s15 // move s15 to result register 25 bx lr 26END_COMPILERRT_FUNCTION(__fixdfsivfp) 27