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// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/eh-frame.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace v8 {
namespace internal {
// Test enabled only on supported architectures.
#if defined(V8_TARGET_ARCH_X64) || defined(V8_TARGET_ARCH_ARM) || \
defined(V8_TARGET_ARCH_ARM64)
namespace {
class EhFrameIteratorTest : public testing::Test {};
} // namespace
TEST_F(EhFrameIteratorTest, Values) {
// Assuming little endian.
static const byte kEncoded[] = {0xde, 0xc0, 0xad, 0xde, 0xef, 0xbe, 0xff};
EhFrameIterator iterator(&kEncoded[0], &kEncoded[0] + sizeof(kEncoded));
EXPECT_EQ(0xdeadc0de, iterator.GetNextUInt32());
EXPECT_EQ(0xbeef, iterator.GetNextUInt16());
EXPECT_EQ(0xff, iterator.GetNextByte());
EXPECT_TRUE(iterator.Done());
}
TEST_F(EhFrameIteratorTest, Skip) {
static const byte kEncoded[] = {0xde, 0xad, 0xc0, 0xde};
EhFrameIterator iterator(&kEncoded[0], &kEncoded[0] + sizeof(kEncoded));
iterator.Skip(2);
EXPECT_EQ(2, iterator.GetCurrentOffset());
EXPECT_EQ(0xc0, iterator.GetNextByte());
iterator.Skip(1);
EXPECT_TRUE(iterator.Done());
}
TEST_F(EhFrameIteratorTest, ULEB128Decoding) {
static const byte kEncoded[] = {0xe5, 0x8e, 0x26};
EhFrameIterator iterator(&kEncoded[0], &kEncoded[0] + sizeof(kEncoded));
EXPECT_EQ(624485u, iterator.GetNextULeb128());
EXPECT_TRUE(iterator.Done());
}
TEST_F(EhFrameIteratorTest, SLEB128DecodingPositive) {
static const byte kEncoded[] = {0xe5, 0x8e, 0x26};
EhFrameIterator iterator(&kEncoded[0], &kEncoded[0] + sizeof(kEncoded));
EXPECT_EQ(624485, iterator.GetNextSLeb128());
EXPECT_TRUE(iterator.Done());
}
TEST_F(EhFrameIteratorTest, SLEB128DecodingNegative) {
static const byte kEncoded[] = {0x9b, 0xf1, 0x59};
EhFrameIterator iterator(&kEncoded[0], &kEncoded[0] + sizeof(kEncoded));
EXPECT_EQ(-624485, iterator.GetNextSLeb128());
EXPECT_TRUE(iterator.Done());
}
#endif
} // namespace internal
} // namespace v8
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