summaryrefslogtreecommitdiff
path: root/lib/builtins/arm/floatsisfvfp.S
blob: eb265e990255b17b8efa19dc514cc2c05926a50b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
//===-- floatsisfvfp.S - Implement floatsisfvfp ---------------------------===//
//
//                     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 float __floatsisfvfp(int a);
//
// Converts single precision float to a 32-bit int rounding towards zero.
// Uses Darwin calling convention where a single precision result is 
// return in a GPR..
//
	.syntax unified
	.align 2
DEFINE_COMPILERRT_FUNCTION(__floatsisfvfp)
	vmov	s15, r0	       // move int to float register s15
	vcvt.f32.s32 s15, s15  // convert 32-bit int in s15 to float in s15
	vmov	r0, s15        // move s15 to result register
	bx	lr
END_COMPILERRT_FUNCTION(__floatsisfvfp)