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Merge "linker: Add unit-test for sleb128_decoder"

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Dimitry Ivanov 2016-04-06 00:15:02 +00:00 committed by Gerrit Code Review
commit 66606ff84c
3 changed files with 104 additions and 4 deletions
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2
linker/linker_sleb128.h
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@ -19,6 +19,8 @@
#include <stdint.h>
#include "linker_debug.h"
// Helper classes for decoding LEB128, used in packed relocation data.
// http://en.wikipedia.org/wiki/LEB128

8
linker/tests/Android.mk
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@ -27,17 +27,17 @@ LOCAL_CFLAGS += -g -Wall -Wextra -Wunused -Werror
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../../libc/
LOCAL_SRC_FILES := \
linker_block_allocator_test.cpp \
linker_globals.cpp \
linked_list_test.cpp \
linker_block_allocator_test.cpp \
../linker_block_allocator.cpp \
linker_memory_allocator_test.cpp \
linker_sleb128_test.cpp \
linker_utils_test.cpp \
../linker_allocator.cpp \
../linker_block_allocator.cpp \
../linker_utils.cpp
# for __libc_fatal
LOCAL_SRC_FILES += ../../libc/bionic/libc_logging.cpp
LOCAL_STATIC_LIBRARIES := liblinker_malloc
include $(BUILD_NATIVE_TEST)

98
linker/tests/linker_sleb128_test.cpp Normal file
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@ -0,0 +1,98 @@
/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <gtest/gtest.h>
#include "../linker_sleb128.h"
TEST(linker_sleb128, smoke) {
std::vector<uint8_t> encoding;
// 624485
encoding.push_back(0xe5);
encoding.push_back(0x8e);
encoding.push_back(0x26);
// 0
encoding.push_back(0x00);
// 1
encoding.push_back(0x01);
// 63
encoding.push_back(0x3f);
// 64
encoding.push_back(0xc0);
encoding.push_back(0x00);
// -1
encoding.push_back(0x7f);
// -624485
encoding.push_back(0x9b);
encoding.push_back(0xf1);
encoding.push_back(0x59);
// 2147483647
encoding.push_back(0xff);
encoding.push_back(0xff);
encoding.push_back(0xff);
encoding.push_back(0xff);
encoding.push_back(0x07);
// -2147483648
encoding.push_back(0x80);
encoding.push_back(0x80);
encoding.push_back(0x80);
encoding.push_back(0x80);
encoding.push_back(0x78);
#if defined(__LP64__)
// 9223372036854775807
encoding.push_back(0xff);
encoding.push_back(0xff);
encoding.push_back(0xff);
encoding.push_back(0xff);
encoding.push_back(0xff);
encoding.push_back(0xff);
encoding.push_back(0xff);
encoding.push_back(0xff);
encoding.push_back(0xff);
encoding.push_back(0x00);
// -9223372036854775808
encoding.push_back(0x80);
encoding.push_back(0x80);
encoding.push_back(0x80);
encoding.push_back(0x80);
encoding.push_back(0x80);
encoding.push_back(0x80);
encoding.push_back(0x80);
encoding.push_back(0x80);
encoding.push_back(0x80);
encoding.push_back(0x7f);
#endif
sleb128_decoder decoder(&encoding[0], encoding.size());
EXPECT_EQ(624485U, decoder.pop_front());
EXPECT_EQ(0U, decoder.pop_front());
EXPECT_EQ(1U, decoder.pop_front());
EXPECT_EQ(63U, decoder.pop_front());
EXPECT_EQ(64U, decoder.pop_front());
EXPECT_EQ(static_cast<size_t>(-1), decoder.pop_front());
EXPECT_EQ(static_cast<size_t>(-624485), decoder.pop_front());
EXPECT_EQ(2147483647U, decoder.pop_front());
EXPECT_EQ(static_cast<size_t>(-2147483648), decoder.pop_front());
#if defined(__LP64__)
EXPECT_EQ(9223372036854775807ULL, decoder.pop_front());
EXPECT_EQ(static_cast<uint64_t>(-9223372036854775807LL - 1), decoder.pop_front());
#endif
}