1 //===-- negdf2vfp.S - Implement negdf2vfp ---------------------------------===// 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 __negdf2vfp(double a, double b); 14 // 15 // Returns the negation a double precision floating point numbers using the 16 // Darwin calling convention where double arguments are passsed in GPR pairs. 17 // 18 .syntax unified 19 .p2align 2 20 DEFINE_COMPILERRT_FUNCTION(__negdf2vfp) 21 eor r1, r1, #-2147483648 // flip sign bit on double in r0/r1 pair 22 bx lr 23 END_COMPILERRT_FUNCTION(__negdf2vfp) 24
