1 //===-- fixdfsivfp.S - Implement fixdfsivfp -----------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "../assembly.h"
13 // extern int __fixdfsivfp(double a);
15 // Converts double precision float to a 32-bit int rounding towards zero.
16 // Uses Darwin calling convention where a double precision parameter is
17 // passed in GPR register pair.
21 DEFINE_COMPILERRT_FUNCTION(__fixdfsivfp)
22 vmov d7, r0, r1 // load double register from R0/R1
23 vcvt.s32.f64 s15, d7 // convert double to 32-bit int into s15
24 vmov r0, s15 // move s15 to result register