gtsf2vfp.S   [plain text]

//===-- gtsf2vfp.S - Implement gtsf2vfp -----------------------------------===//
//
//                     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 __gtsf2vfp(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(__gtsf2vfp)
	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
	movgt	r0, #1		// set result register to 1 if equal
	movle	r0, #0
	bx	lr