1//===-- floatunssidfvfp.S - Implement floatunssidfvfp ---------------------===//
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 double __floatunssidfvfp(unsigned int a);
14//
15// Converts a 32-bit int to a double precision float.
16// Uses Darwin calling convention where a double precision result is
17// return in GPR register pair.
18//
19	.syntax unified
20	.p2align 2
21DEFINE_COMPILERRT_FUNCTION(__floatunssidfvfp)
22#if defined(COMPILER_RT_ARMHF_TARGET)
23	vmov s0, r0
24	vcvt.f64.u32 d0, s0
25#else
26	vmov	s15, r0        // move int to float register s15
27	vcvt.f64.u32 d7, s15   // convert 32-bit int in s15 to double in d7
28	vmov	r0, r1, d7     // move d7 to result register pair r0/r1
29#endif
30	bx	lr
31END_COMPILERRT_FUNCTION(__floatunssidfvfp)
32
33NO_EXEC_STACK_DIRECTIVE
34
35