1 | /* ===-- cmpdi2.c - Implement __cmpdi2 -------------------------------------=== |
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 __cmpdi2 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 | __cmpdi2(di_int a, di_int b) |
24 | { |
25 | dwords x; |
26 | x.all = a; |
27 | dwords 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_lcmp(di_int a, di_int b) |
47 | { |
48 | return __cmpdi2(a, b) - 1; |
49 | } |
50 | #endif |
51 | |
52 | |