The Tor Browser: comparison toolkit/crashreporter/google-breakpad/src/common/dwarf/bytereader-inl.h

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+// Copyright 2006 Google Inc. All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#ifndef UTIL_DEBUGINFO_BYTEREADER_INL_H__
+#define UTIL_DEBUGINFO_BYTEREADER_INL_H__
+#include "common/dwarf/bytereader.h"
+#include <assert.h>
+namespace dwarf2reader {
+inline uint8 ByteReader::ReadOneByte(const char* buffer) const {
+return buffer[0];
+}
+inline uint16 ByteReader::ReadTwoBytes(const char* signed_buffer) const {
+const unsigned char *buffer
+= reinterpret_cast<const unsigned char *>(signed_buffer);
+const uint16 buffer0 = buffer[0];
+const uint16 buffer1 = buffer[1];
+if (endian_ == ENDIANNESS_LITTLE) {
+return buffer0 | buffer1 << 8;
+} else {
+return buffer1 | buffer0 << 8;
+}
+}
+inline uint64 ByteReader::ReadFourBytes(const char* signed_buffer) const {
+const unsigned char *buffer
+= reinterpret_cast<const unsigned char *>(signed_buffer);
+const uint32 buffer0 = buffer[0];
+const uint32 buffer1 = buffer[1];
+const uint32 buffer2 = buffer[2];
+const uint32 buffer3 = buffer[3];
+if (endian_ == ENDIANNESS_LITTLE) {
+return buffer0 | buffer1 << 8 | buffer2 << 16 | buffer3 << 24;
+} else {
+return buffer3 | buffer2 << 8 | buffer1 << 16 | buffer0 << 24;
+}
+}
+inline uint64 ByteReader::ReadEightBytes(const char* signed_buffer) const {
+const unsigned char *buffer
+= reinterpret_cast<const unsigned char *>(signed_buffer);
+const uint64 buffer0 = buffer[0];
+const uint64 buffer1 = buffer[1];
+const uint64 buffer2 = buffer[2];
+const uint64 buffer3 = buffer[3];
+const uint64 buffer4 = buffer[4];
+const uint64 buffer5 = buffer[5];
+const uint64 buffer6 = buffer[6];
+const uint64 buffer7 = buffer[7];
+if (endian_ == ENDIANNESS_LITTLE) {
+return buffer0 | buffer1 << 8 | buffer2 << 16 | buffer3 << 24 |
+buffer4 << 32 | buffer5 << 40 | buffer6 << 48 | buffer7 << 56;
+} else {
+return buffer7 | buffer6 << 8 | buffer5 << 16 | buffer4 << 24 |
+buffer3 << 32 | buffer2 << 40 | buffer1 << 48 | buffer0 << 56;
+}
+}
+// Read an unsigned LEB128 number.  Each byte contains 7 bits of
+// information, plus one bit saying whether the number continues or
+// not.
+inline uint64 ByteReader::ReadUnsignedLEB128(const char* buffer,
+size_t* len) const {
+uint64 result = 0;
+size_t num_read = 0;
+unsigned int shift = 0;
+unsigned char byte;
+do {
+byte = *buffer++;
+num_read++;
+result |= (static_cast<uint64>(byte & 0x7f)) << shift;
+shift += 7;
+} while (byte & 0x80);
+*len = num_read;
+return result;
+}
+// Read a signed LEB128 number.  These are like regular LEB128
+// numbers, except the last byte may have a sign bit set.
+inline int64 ByteReader::ReadSignedLEB128(const char* buffer,
+size_t* len) const {
+int64 result = 0;
+unsigned int shift = 0;
+size_t num_read = 0;
+unsigned char byte;
+do {
+byte = *buffer++;
+num_read++;
+result |= (static_cast<uint64>(byte & 0x7f) << shift);
+shift += 7;
+} while (byte & 0x80);
+if ((shift < 8 * sizeof (result)) && (byte & 0x40))
+result |= -((static_cast<int64>(1)) << shift);
+*len = num_read;
+return result;
+}
+inline uint64 ByteReader::ReadOffset(const char* buffer) const {
+assert(this->offset_reader_);
+return (this->*offset_reader_)(buffer);
+}
+inline uint64 ByteReader::ReadAddress(const char* buffer) const {
+assert(this->address_reader_);
+return (this->*address_reader_)(buffer);
+}
+inline void ByteReader::SetCFIDataBase(uint64 section_base,
+const char *buffer_base) {
+section_base_ = section_base;
+buffer_base_ = buffer_base;
+have_section_base_ = true;
+}
+inline void ByteReader::SetTextBase(uint64 text_base) {
+text_base_ = text_base;
+have_text_base_ = true;
+}
+inline void ByteReader::SetDataBase(uint64 data_base) {
+data_base_ = data_base;
+have_data_base_ = true;
+}
+inline void ByteReader::SetFunctionBase(uint64 function_base) {
+function_base_ = function_base;
+have_function_base_ = true;
+}
+inline void ByteReader::ClearFunctionBase() {
+have_function_base_ = false;
+}
+}  // namespace dwarf2reader
+#endif  // UTIL_DEBUGINFO_BYTEREADER_INL_H__

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comparison: toolkit/crashreporter/google-breakpad/src/common/dwarf/bytereader-inl.h

toolkit/crashreporter/google-breakpad/src/common/dwarf/bytereader-inl.h