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16e08520e6
This enables the DWARF reader to properly parse DW_AT_ranges attributes in compilation units and functions. Code covered by a function is now represented by a vector of ranges instead of a single contiguous range and DW_AT_ranges entries are used to populate it. All the code and tests that assumed functions to be contiguous entities has been updated to reflect the change. DW_AT_ranges attributes found in compilation units are parsed but no data is generated for them as it is not currently needed. BUG=754 Change-Id: I310391b525aaba0dd329f1e3187486f2e0c6d442 Reviewed-on: https://chromium-review.googlesource.com/1124721 Reviewed-by: Ted Mielczarek <ted.mielczarek@gmail.com>
80 lines
2.9 KiB
C++
80 lines
2.9 KiB
C++
// -*- mode: c++ -*-
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// Copyright (c) 2018 Google Inc.
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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 are
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// met:
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//
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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
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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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 FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Original author: Gabriele Svelto <gsvelto@mozilla.com>
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// <gabriele.svelto@gmail.com>
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// The DwarfRangeListHandler class accepts rangelist data from a DWARF parser
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// and adds it to a google_breakpad::Function or other objects supporting
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// ranges.
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#ifndef COMMON_LINUX_DWARF_RANGE_LIST_HANDLER_H
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#define COMMON_LINUX_DWARF_RANGE_LIST_HANDLER_H
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#include <vector>
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#include "common/module.h"
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#include "common/dwarf/dwarf2reader.h"
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namespace google_breakpad {
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// A class for producing a vector of google_breakpad::Module::Range
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// instances from a parsed DWARF range list.
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class DwarfRangeListHandler: public dwarf2reader::RangeListHandler {
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public:
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DwarfRangeListHandler(uint64 base_address, vector<Module::Range> *ranges)
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: base_address_(base_address), ranges_(ranges) { }
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~DwarfRangeListHandler() { }
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// Add a range to the list
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void AddRange(uint64 begin, uint64 end);
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// Record the new base address and use it for the following entries
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void SetBaseAddress(uint64 base_address);
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// Sort the ranges so that they are in ascending order of starting address
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void Finish();
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private:
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// The current PC to add to every entry, this can be overridden by a special
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// list entry
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uint64 base_address_;
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// The list of ranges to be populated
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vector<Module::Range> *ranges_;
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};
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} // namespace google_breakpad
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#endif // COMMON_LINUX_DWARF_RANGE_LIST_HANDLER_H
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