fixunsdfsivfp.S revision 222656 
1//===-- fixunsdfsivfp.S - Implement fixunsdfsivfp -------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "../assembly.h"
11
12//
13// extern unsigned int __fixunsdfsivfp(double a);
14//
15// Converts double precision float to a 32-bit unsigned int rounding towards
16// zero. All negative values become zero.
17// Uses Darwin calling convention where a double precision parameter is
18// passed in GPR register pair.
19//
20	.align 2
21DEFINE_COMPILERRT_FUNCTION(__fixunsdfsivfp)
22	fmdrr	d7, r0, r1    // load double register from R0/R1
23	ftouizd	s15, d7       // convert double to 32-bit int into s15
24	fmrs	r0, s15	      // move s15 to result register
25	bx	lr
26