30 lines
880 B
ArmAsm
30 lines
880 B
ArmAsm
//===-- nesf2vfp.S - Implement nesf2vfp -----------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "../assembly.h"
|
|
|
|
//
|
|
// extern int __nesf2vfp(float a, float b);
|
|
//
|
|
// Returns one iff a != b and neither is NaN.
|
|
// Uses Darwin calling convention where single precision arguments are passsed
|
|
// like 32-bit ints
|
|
//
|
|
.syntax unified
|
|
.align 2
|
|
DEFINE_COMPILERRT_FUNCTION(__nesf2vfp)
|
|
vmov s14, r0 // move from GPR 0 to float register
|
|
vmov s15, r1 // move from GPR 1 to float register
|
|
vcmp.f32 s14, s15
|
|
vmrs apsr_nzcv, fpscr
|
|
movne r0, #1 // set result register to 1 if unequal
|
|
moveq r0, #0
|
|
bx lr
|
|
|