| Nick Kledzik | e80e978 | 2009-09-12 01:23:48 +0000 | [diff] [blame] | 1 | //===-- negsf2vfp.S - Implement negsf2vfp ---------------------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| Howard Hinnant | 9ad441f | 2010-11-16 22:13:33 +0000 | [diff] [blame] | 5 | // This file is dual licensed under the MIT and the University of Illinois Open |
| 6 | // Source Licenses. See LICENSE.TXT for details. |
| Nick Kledzik | e80e978 | 2009-09-12 01:23:48 +0000 | [diff] [blame] | 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| Daniel Dunbar | 19336a2 | 2009-10-27 17:49:50 +0000 | [diff] [blame] | 10 | #include "../assembly.h" |
| Nick Kledzik | e80e978 | 2009-09-12 01:23:48 +0000 | [diff] [blame] | 11 | |
| 12 | // |
| 13 | // extern float __negsf2vfp(float a); |
| 14 | // |
| 15 | // Returns the negation of a single precision floating point numbers using the |
| 16 | // Darwin calling convention where single arguments are passsed like 32-bit ints |
| 17 | // |
| Bob Wilson | c20f862 | 2011-08-23 16:40:18 +0000 | [diff] [blame] | 18 | .syntax unified |
| Nick Kledzik | d016b38 | 2010-04-21 22:36:23 +0000 | [diff] [blame] | 19 | .align 2 |
| Daniel Dunbar | b4b1e8c | 2009-10-27 17:50:21 +0000 | [diff] [blame] | 20 | DEFINE_COMPILERRT_FUNCTION(__negsf2vfp) |
| Nick Kledzik | e80e978 | 2009-09-12 01:23:48 +0000 | [diff] [blame] | 21 | eor r0, r0, #-2147483648 // flip sign bit on float in r0 |
| 22 | bx lr |