1 | //===-- cmpdi2.c - Implement __cmpdi2 -------------------------------------===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | // |
9 | // This file implements __cmpdi2 for the compiler_rt library. |
10 | // |
11 | //===----------------------------------------------------------------------===// |
12 | |
13 | #include "int_lib.h" |
14 | |
15 | // Returns: if (a < b) returns 0 |
16 | // if (a == b) returns 1 |
17 | // if (a > b) returns 2 |
18 | |
19 | COMPILER_RT_ABI si_int __cmpdi2(di_int a, di_int b) { |
20 | dwords x; |
21 | x.all = a; |
22 | dwords y; |
23 | y.all = b; |
24 | if (x.s.high < y.s.high) |
25 | return 0; |
26 | if (x.s.high > y.s.high) |
27 | return 2; |
28 | if (x.s.low < y.s.low) |
29 | return 0; |
30 | if (x.s.low > y.s.low) |
31 | return 2; |
32 | return 1; |
33 | } |
34 | |
35 | #ifdef __ARM_EABI__ |
36 | // Returns: if (a < b) returns -1 |
37 | // if (a == b) returns 0 |
38 | // if (a > b) returns 1 |
39 | COMPILER_RT_ABI si_int __aeabi_lcmp(di_int a, di_int b) { |
40 | return __cmpdi2(a, b) - 1; |
41 | } |
42 | #endif |
43 | |