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 .syntax unified 21 .p2align 2 22 DEFINE_COMPILERRT_FUNCTION(__fixunsdfsivfp) 23 vmov d7, r0, r1 // load double register from R0/R1 24 vcvt.u32.f64 s15, d7 // convert double to 32-bit int into s15 25 vmov r0, s15 // move s15 to result register 26 bx lr 27 END_COMPILERRT_FUNCTION(__fixunsdfsivfp) 28 29 NO_EXEC_STACK_DIRECTIVE 30 31
