1214152Sed//===-- extendsfdf2vfp.S - Implement extendsfdf2vfp -----------------------===// 2214152Sed// 3214152Sed// The LLVM Compiler Infrastructure 4214152Sed// 5222656Sed// This file is dual licensed under the MIT and the University of Illinois Open 6222656Sed// Source Licenses. See LICENSE.TXT for details. 7214152Sed// 8214152Sed//===----------------------------------------------------------------------===// 9214152Sed 10214152Sed#include "../assembly.h" 11214152Sed 12214152Sed// 13214152Sed// extern double __extendsfdf2vfp(float a); 14214152Sed// 15214152Sed// Converts single precision float to double precision result. 16214152Sed// Uses Darwin calling convention where a single precision parameter is 17214152Sed// passed in a GPR and a double precision result is returned in R0/R1 pair. 18214152Sed// 19229135Sed .syntax unified 20214152Sed .align 2 21214152SedDEFINE_COMPILERRT_FUNCTION(__extendsfdf2vfp) 22229135Sed vmov s15, r0 // load float register from R0 23229135Sed vcvt.f64.f32 d7, s15 // convert single to double 24229135Sed vmov r0, r1, d7 // return result in r0/r1 pair 25214152Sed bx lr 26