muldf3vfp.S revision 309124
1276789Sdim//===-- muldf3vfp.S - Implement muldf3vfp ---------------------------------===// 2276789Sdim// 3276789Sdim// The LLVM Compiler Infrastructure 4276789Sdim// 5276789Sdim// This file is dual licensed under the MIT and the University of Illinois Open 6276789Sdim// Source Licenses. See LICENSE.TXT for details. 7276789Sdim// 8276789Sdim//===----------------------------------------------------------------------===// 9276789Sdim 10276789Sdim#include "../assembly.h" 11276789Sdim 12276789Sdim// 13276789Sdim// extern double __muldf3vfp(double a, double b); 14276789Sdim// 15276789Sdim// Multiplies two double precision floating point numbers using the Darwin 16276789Sdim// calling convention where double arguments are passsed in GPR pairs 17276789Sdim// 18276789Sdim .syntax unified 19276789Sdim .p2align 2 20276789SdimDEFINE_COMPILERRT_FUNCTION(__muldf3vfp) 21276789Sdim vmov d6, r0, r1 // move first param from r0/r1 pair into d6 22276789Sdim vmov d7, r2, r3 // move second param from r2/r3 pair into d7 23276789Sdim vmul.f64 d6, d6, d7 24276789Sdim vmov r0, r1, d6 // move result back to r0/r1 pair 25276789Sdim bx lr 26276789SdimEND_COMPILERRT_FUNCTION(__muldf3vfp) 27309124Sdim 28309124SdimNO_EXEC_STACK_DIRECTIVE 29309124Sdim 30