projects / rustc.git / blame
| Commit | Line | Data |
|---|---|---|
| 1a4d82fc JJ |
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 | |
| 92a42be0 | 21 | .p2align 2 |
| 1a4d82fc | 22 | DEFINE_COMPILERRT_FUNCTION(__fixunsdfsivfp) |
| 7cac9316 XL |
23 | #if defined(COMPILER_RT_ARMHF_TARGET) |
| 24 | vcvt.u32.f64 s0, d0 | |
| 25 | vmov r0, s0 | |
| 26 | #else | |
| 1a4d82fc JJ |
27 | vmov d7, r0, r1 // load double register from R0/R1 |
| 28 | vcvt.u32.f64 s15, d7 // convert double to 32-bit int into s15 | |
| 29 | vmov r0, s15 // move s15 to result register | |
| 7cac9316 | 30 | #endif |
| 1a4d82fc JJ |
31 | bx lr |
| 32 | END_COMPILERRT_FUNCTION(__fixunsdfsivfp) | |
| 3157f602 XL |
33 | |
| 34 | NO_EXEC_STACK_DIRECTIVE | |
| 35 |