ee1e0a34ae
Fix the list of static functions coming from swab.h to match the
ones exported by glibc.
Force the definition of __HAVE_BUILTIN_BSWAP{16,32,64}__ so the headers
use the builtin.
Add a unit test to guarantee that kernel header updates do not break this.
Test: Built and booted angler.
Test: Built the bionic unit tests for arm, arm64, mips, x86, x86_64.
Test: Ran the new test on angler and glibc.
Change-Id: I4ce229e3f198c204186d72bf22dd97b5cdf239e4
60 lines
1.9 KiB
C++
60 lines
1.9 KiB
C++
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <gtest/gtest.h>
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#include <linux/swab.h>
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// This test makes sure that references to all of the kernel swab
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// macros/inline functions that are exported work properly.
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// Verifies that any kernel header updates do not break these macros.
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TEST(swab, fswa) {
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EXPECT_EQ(0x3412U, __swab16(0x1234));
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EXPECT_EQ(0x78563412U, __swab32(0x12345678U));
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EXPECT_EQ(0xbaefcdab78563412ULL, __swab64(0x12345678abcdefbaULL));
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__u16 bval16 = 0x1234;
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EXPECT_EQ(0x3412U, __swab16p(&bval16));
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__u32 bval32 = 0x12345678U;
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EXPECT_EQ(0x78563412U, __swab32p(&bval32));
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__u64 bval64 = 0x12345678abcdefbaULL;
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EXPECT_EQ(0xbaefcdab78563412ULL, __swab64p(&bval64));
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__u16 sval16 = 0x1234;
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__swab16s(&sval16);
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EXPECT_EQ(0x3412U, sval16);
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__u32 sval32 = 0x12345678U;
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__swab32s(&sval32);
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EXPECT_EQ(0x78563412U, sval32);
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__u64 sval64 = 0x12345678abcdefbaULL;
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__swab64s(&sval64);
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EXPECT_EQ(0xbaefcdab78563412ULL, sval64);
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EXPECT_EQ(0x56781234U, __swahw32(0x12345678U));
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EXPECT_EQ(0x34127856U, __swahb32(0x12345678U));
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__u32 hval32 = 0x12345678U;
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EXPECT_EQ(0x56781234U, __swahw32p(&hval32));
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hval32 = 0x12345678U;
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EXPECT_EQ(0x34127856U, __swahb32p(&hval32));
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__u32 hsval32 = 0x12345678U;
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__swahw32s(&hsval32);
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EXPECT_EQ(0x56781234U, hsval32);
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hsval32 = 0x12345678U;
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__swahb32s(&hsval32);
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EXPECT_EQ(0x34127856U, hsval32);
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}
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