Emmanuel Odeke | 53fd522 | 2016-04-10 14:32:26 -0700 | [diff] [blame] | 1 | // Copyright 2012 The Go Authors. All rights reserved. |
Shenghou Ma | 551d8b9 | 2012-08-17 03:42:34 +0800 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | package cgotest |
| 6 | |
| 7 | /* |
| 8 | // libgcc on ARM might be compiled as thumb code, but our 5l |
| 9 | // can't handle that, so we have to disable this test on arm. |
| 10 | #ifdef __ARMEL__ |
| 11 | #include <stdio.h> |
| 12 | int vabs(int x) { |
| 13 | puts("testLibgcc is disabled on ARM because 5l cannot handle thumb library."); |
| 14 | return (x < 0) ? -x : x; |
| 15 | } |
Shenghou Ma | 110fa22 | 2015-04-11 05:57:15 -0400 | [diff] [blame] | 16 | #elif defined(__arm64__) && defined(__clang__) |
| 17 | #include <stdio.h> |
| 18 | int vabs(int x) { |
| 19 | puts("testLibgcc is disabled on ARM64 with clang due to lack of libgcc."); |
| 20 | return (x < 0) ? -x : x; |
| 21 | } |
Shenghou Ma | 551d8b9 | 2012-08-17 03:42:34 +0800 | [diff] [blame] | 22 | #else |
| 23 | int __absvsi2(int); // dummy prototype for libgcc function |
| 24 | // we shouldn't name the function abs, as gcc might use |
| 25 | // the builtin one. |
| 26 | int vabs(int x) { return __absvsi2(x); } |
| 27 | #endif |
| 28 | */ |
| 29 | import "C" |
| 30 | |
| 31 | import "testing" |
| 32 | |
| 33 | func testLibgcc(t *testing.T) { |
| 34 | var table = []struct { |
| 35 | in, out C.int |
| 36 | }{ |
| 37 | {0, 0}, |
| 38 | {1, 1}, |
| 39 | {-42, 42}, |
| 40 | {1000300, 1000300}, |
| 41 | {1 - 1<<31, 1<<31 - 1}, |
| 42 | } |
| 43 | for _, v := range table { |
| 44 | if o := C.vabs(v.in); o != v.out { |
| 45 | t.Fatalf("abs(%d) got %d, should be %d", v.in, o, v.out) |
| 46 | return |
| 47 | } |
| 48 | } |
| 49 | } |