7a3681e5b6
This library is used by a number of different libraries in the system. Make it easy for platform libraries to use this library and create an actual exported include file. Change the names of the functions to reflect the new name of the library. Run clang_format on the async_safe_log.cpp file since the formatting is all over the place. Bug: 31919199 Test: Compiled for angler/bullhead, and booted. Test: Ran bionic unit tests. Test: Ran the malloc debug tests. Change-Id: I8071bf690c17b0ea3bc8dc5749cdd5b6ad58478a
74 lines
2.3 KiB
C++
74 lines
2.3 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _LINKER_SLEB128_H
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#define _LINKER_SLEB128_H
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#include <stdint.h>
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#include <async_safe/log.h>
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#include "linker_debug.h"
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// Helper classes for decoding LEB128, used in packed relocation data.
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// http://en.wikipedia.org/wiki/LEB128
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class sleb128_decoder {
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public:
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sleb128_decoder(const uint8_t* buffer, size_t count)
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: current_(buffer), end_(buffer+count) { }
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size_t pop_front() {
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size_t value = 0;
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static const size_t size = CHAR_BIT * sizeof(value);
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size_t shift = 0;
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uint8_t byte;
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do {
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if (current_ >= end_) {
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async_safe_fatal("sleb128_decoder ran out of bounds");
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}
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byte = *current_++;
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value |= (static_cast<size_t>(byte & 127) << shift);
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shift += 7;
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} while (byte & 128);
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if (shift < size && (byte & 64)) {
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value |= -(static_cast<size_t>(1) << shift);
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}
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return value;
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}
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private:
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const uint8_t* current_;
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const uint8_t* const end_;
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};
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#endif // __LINKER_SLEB128_H
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