1*0a6a1f1dSLionel Sambuc//===-- ltsf2vfp.S - Implement ltsf2vfp -----------------------------------===// 2*0a6a1f1dSLionel Sambuc// 3*0a6a1f1dSLionel Sambuc// The LLVM Compiler Infrastructure 4*0a6a1f1dSLionel Sambuc// 5*0a6a1f1dSLionel Sambuc// This file is dual licensed under the MIT and the University of Illinois Open 6*0a6a1f1dSLionel Sambuc// Source Licenses. See LICENSE.TXT for details. 7*0a6a1f1dSLionel Sambuc// 8*0a6a1f1dSLionel Sambuc//===----------------------------------------------------------------------===// 9*0a6a1f1dSLionel Sambuc 10*0a6a1f1dSLionel Sambuc#include "../assembly.h" 11*0a6a1f1dSLionel Sambuc 12*0a6a1f1dSLionel Sambuc// 13*0a6a1f1dSLionel Sambuc// extern int __ltsf2vfp(float a, float b); 14*0a6a1f1dSLionel Sambuc// 15*0a6a1f1dSLionel Sambuc// Returns one iff a < b and neither is NaN. 16*0a6a1f1dSLionel Sambuc// Uses Darwin calling convention where single precision arguments are passsed 17*0a6a1f1dSLionel Sambuc// like 32-bit ints 18*0a6a1f1dSLionel Sambuc// 19*0a6a1f1dSLionel Sambuc .syntax unified 20*0a6a1f1dSLionel Sambuc .p2align 2 21*0a6a1f1dSLionel SambucDEFINE_COMPILERRT_FUNCTION(__ltsf2vfp) 22*0a6a1f1dSLionel Sambuc vmov s14, r0 // move from GPR 0 to float register 23*0a6a1f1dSLionel Sambuc vmov s15, r1 // move from GPR 1 to float register 24*0a6a1f1dSLionel Sambuc vcmp.f32 s14, s15 25*0a6a1f1dSLionel Sambuc vmrs apsr_nzcv, fpscr 26*0a6a1f1dSLionel Sambuc movmi r0, #1 // set result register to 1 if equal 27*0a6a1f1dSLionel Sambuc movpl r0, #0 28*0a6a1f1dSLionel Sambuc bx lr 29*0a6a1f1dSLionel SambucEND_COMPILERRT_FUNCTION(__ltsf2vfp) 30