minix/sys/external/bsd/compiler_rt/dist/lib/arm/nesf2vfp.S

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//===-- 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