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https://github.com/golang/go
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110fa22c45
Because there is no libgcc. Change-Id: I3b3f80791a1db4c2b7318f81a115972cd2237f07 Signed-off-by: Shenghou Ma <minux@golang.org> Reviewed-on: https://go-review.googlesource.com/8786 Reviewed-by: David Crawshaw <crawshaw@golang.org>
50 lines
1.2 KiB
Go
50 lines
1.2 KiB
Go
// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package cgotest
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/*
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// libgcc on ARM might be compiled as thumb code, but our 5l
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// can't handle that, so we have to disable this test on arm.
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#ifdef __ARMEL__
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#include <stdio.h>
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int vabs(int x) {
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puts("testLibgcc is disabled on ARM because 5l cannot handle thumb library.");
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return (x < 0) ? -x : x;
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}
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#elif defined(__arm64__) && defined(__clang__)
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#include <stdio.h>
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int vabs(int x) {
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puts("testLibgcc is disabled on ARM64 with clang due to lack of libgcc.");
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return (x < 0) ? -x : x;
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}
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#else
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int __absvsi2(int); // dummy prototype for libgcc function
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// we shouldn't name the function abs, as gcc might use
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// the builtin one.
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int vabs(int x) { return __absvsi2(x); }
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#endif
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*/
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import "C"
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import "testing"
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func testLibgcc(t *testing.T) {
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var table = []struct {
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in, out C.int
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}{
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{0, 0},
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{1, 1},
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{-42, 42},
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{1000300, 1000300},
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{1 - 1<<31, 1<<31 - 1},
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}
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for _, v := range table {
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if o := C.vabs(v.in); o != v.out {
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t.Fatalf("abs(%d) got %d, should be %d", v.in, o, v.out)
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return
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}
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}
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}
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