projects / rustc.git / blame
| Commit | Line | Data |
|---|---|---|
| 1a4d82fc JJ |
1 | /* ===-- ucmpdi2.c - Implement __ucmpdi2 -----------------------------------=== |
| 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 | * This file implements __ucmpdi2 for the compiler_rt library. | |
| 11 | * | |
| 12 | * ===----------------------------------------------------------------------=== | |
| 13 | */ | |
| 14 | ||
| 15 | #include "int_lib.h" | |
| 16 | ||
| 17 | /* Returns: if (a < b) returns 0 | |
| 18 | * if (a == b) returns 1 | |
| 19 | * if (a > b) returns 2 | |
| 20 | */ | |
| 21 | ||
| 22 | COMPILER_RT_ABI si_int | |
| 23 | __ucmpdi2(du_int a, du_int b) | |
| 24 | { | |
| 25 | udwords x; | |
| 26 | x.all = a; | |
| 27 | udwords y; | |
| 28 | y.all = b; | |
| 29 | if (x.s.high < y.s.high) | |
| 30 | return 0; | |
| 31 | if (x.s.high > y.s.high) | |
| 32 | return 2; | |
| 33 | if (x.s.low < y.s.low) | |
| 34 | return 0; | |
| 35 | if (x.s.low > y.s.low) | |
| 36 | return 2; | |
| 37 | return 1; | |
| 38 | } | |
| 39 | ||
| 40 | #ifdef __ARM_EABI__ | |
| 41 | /* Returns: if (a < b) returns -1 | |
| 42 | * if (a == b) returns 0 | |
| 43 | * if (a > b) returns 1 | |
| 44 | */ | |
| 45 | COMPILER_RT_ABI si_int | |
| 46 | __aeabi_ulcmp(di_int a, di_int b) | |
| 47 | { | |
| 48 | return __ucmpdi2(a, b) - 1; | |
| 49 | } | |
| 50 | #endif | |
| 51 |