1 //===-- subsf3vfp.S - Implement subsf3vfp ---------------------------------===// 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 float __subsf3vfp(float a, float b); 14 // 15 // Returns the difference between two single precision floating point numbers 16 // using the Darwin calling convention where single arguments are passsed 17 // like 32-bit ints. 18 // 19 .syntax unified 20 .p2align 2 21 DEFINE_COMPILERRT_FUNCTION(__subsf3vfp) 22 vmov s14, r0 // move first param from r0 into float register 23 vmov s15, r1 // move second param from r1 into float register 24 vsub.f32 s14, s14, s15 25 vmov r0, s14 // move result back to r0 26 bx lr 27 END_COMPILERRT_FUNCTION(__subsf3vfp) 28 29 NO_EXEC_STACK_DIRECTIVE 30 31
