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100 lines
2.3 KiB
100 lines
2.3 KiB
/*
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* Copyright (C) 2020 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 <sys/mman.h>
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#include <sys/types.h>
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#include <gtest/gtest.h>
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#ifdef __ANDROID__
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#include <bionic/mte.h>
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#endif
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#include "MemoryLocal.h"
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#include "MemoryRemote.h"
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#include "TestUtils.h"
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namespace unwindstack {
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static uintptr_t CreateTagMapping() {
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#if defined(__aarch64__)
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uintptr_t mapping =
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reinterpret_cast<uintptr_t>(mmap(nullptr, getpagesize(), PROT_READ | PROT_WRITE | PROT_MTE,
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MAP_PRIVATE | MAP_ANONYMOUS, -1, 0));
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if (reinterpret_cast<void*>(mapping) == MAP_FAILED) {
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return 0;
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}
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__asm__ __volatile__(".arch_extension mte; stg %0, [%0]"
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:
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: "r"(mapping + (1ULL << 56))
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: "memory");
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return mapping;
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#else
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return 0;
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#endif
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}
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TEST(MemoryMteTest, remote_read_tag) {
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#if !defined(__aarch64__)
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GTEST_SKIP() << "Requires aarch64";
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#else
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if (!mte_supported()) {
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GTEST_SKIP() << "Requires MTE";
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}
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#endif
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uintptr_t mapping = CreateTagMapping();
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ASSERT_NE(0U, mapping);
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pid_t pid;
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if ((pid = fork()) == 0) {
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while (true)
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;
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exit(1);
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}
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ASSERT_LT(0, pid);
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TestScopedPidReaper reap(pid);
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ASSERT_TRUE(TestAttach(pid));
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MemoryRemote remote(pid);
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EXPECT_EQ(1, remote.ReadTag(mapping));
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EXPECT_EQ(0, remote.ReadTag(mapping + 16));
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ASSERT_TRUE(TestDetach(pid));
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}
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TEST(MemoryMteTest, local_read_tag) {
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#if !defined(__aarch64__)
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GTEST_SKIP() << "Requires aarch64";
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#else
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if (!mte_supported()) {
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GTEST_SKIP() << "Requires MTE";
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}
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#endif
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uintptr_t mapping = CreateTagMapping();
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ASSERT_NE(0U, mapping);
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MemoryLocal local;
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EXPECT_EQ(1, local.ReadTag(mapping));
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EXPECT_EQ(0, local.ReadTag(mapping + 16));
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}
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} // namespace unwindstack
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