| Nick Kledzik | 9130011 | 2009-09-12 01:23:48 +0000 | [diff] [blame] | 1 | //===-- nesf2vfp.S - Implement nesf2vfp -----------------------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| Howard Hinnant | 5b791f6 | 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 | 9130011 | 2009-09-12 01:23:48 +0000 | [diff] [blame] | 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| Daniel Dunbar | 7d50478 | 2009-10-27 17:49:50 +0000 | [diff] [blame] | 10 | #include "../assembly.h" |
| Nick Kledzik | 9130011 | 2009-09-12 01:23:48 +0000 | [diff] [blame] | 11 | |
| 12 | // |
| 13 | // extern int __nesf2vfp(float a, float b); |
| 14 | // |
| 15 | // Returns one iff a != b and neither is NaN. |
| 16 | // Uses Darwin calling convention where single precision arguments are passsed |
| 17 | // like 32-bit ints |
| 18 | // |
| Bob Wilson | 7184d9f | 2011-08-23 16:40:18 +0000 | [diff] [blame] | 19 | .syntax unified |
| Saleem Abdulrasool | 310874a | 2014-05-12 15:23:37 +0000 | [diff] [blame] | 20 | .p2align 2 |
| Daniel Dunbar | 9ff9371 | 2009-10-27 17:50:21 +0000 | [diff] [blame] | 21 | DEFINE_COMPILERRT_FUNCTION(__nesf2vfp) |
| Saleem Abdulrasool | 9c287bc | 2017-01-11 16:19:25 +0000 | [diff] [blame] | 22 | #if defined(COMPILER_RT_ARMHF_TARGET) |
| 23 | vcmp.f32 s0, s1 |
| 24 | #else |
| Bob Wilson | 7184d9f | 2011-08-23 16:40:18 +0000 | [diff] [blame] | 25 | vmov s14, r0 // move from GPR 0 to float register |
| 26 | vmov s15, r1 // move from GPR 1 to float register |
| 27 | vcmp.f32 s14, s15 |
| Saleem Abdulrasool | 9c287bc | 2017-01-11 16:19:25 +0000 | [diff] [blame] | 28 | #endif |
| Bob Wilson | 7184d9f | 2011-08-23 16:40:18 +0000 | [diff] [blame] | 29 | vmrs apsr_nzcv, fpscr |
| Jonathan Roelofs | dc62b80 | 2017-05-24 15:53:24 +0000 | [diff] [blame] | 30 | ITE(ne) |
| Nick Kledzik | 9130011 | 2009-09-12 01:23:48 +0000 | [diff] [blame] | 31 | movne r0, #1 // set result register to 1 if unequal |
| 32 | moveq r0, #0 |
| 33 | bx lr |
| Joerg Sonnenberger | 171e9cf | 2014-01-24 14:33:42 +0000 | [diff] [blame] | 34 | END_COMPILERRT_FUNCTION(__nesf2vfp) |
| Saleem Abdulrasool | 590e85b | 2016-06-22 22:09:42 +0000 | [diff] [blame] | 35 | |
| 36 | NO_EXEC_STACK_DIRECTIVE |
| 37 | |