1 //===-- fixdfsivfp.S - Implement fixdfsivfp -----------------------===// 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 int __fixdfsivfp(double a); 14 // 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. 18 // 19 .syntax unified 20 .align 2 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 25 bx lr 26
