1 //===-- floatunssidfvfp.S - Implement floatunssidfvfp ---------------------===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 #include "../assembly.h"
12 // extern double __floatunssidfvfp(unsigned int a);
14 // Converts a 32-bit int to a double precision float.
15 // Uses Darwin calling convention where a double precision result is
16 // return in GPR register pair.
20 DEFINE_COMPILERRT_FUNCTION(__floatunssidfvfp)
21 #if defined(COMPILER_RT_ARMHF_TARGET)
25 vmov s15, r0 // move int to float register s15
26 vcvt.f64.u32 d7, s15 // convert 32-bit int in s15 to double in d7
27 vmov r0, r1, d7 // move d7 to result register pair r0/r1
30 END_COMPILERRT_FUNCTION(__floatunssidfvfp)
32 NO_EXEC_STACK_DIRECTIVE