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9277831e4a
To facilitate this, a couple of changes had to be made: 1. `ModuleSubstream` got moved from `DebugInfo/PDB` to `DebugInfo/CodeView`, and various codeview related types are defined there. It turns out `DebugInfo/CodeView/Line.h` already defines many of these structures, but this is really old code that is not endian aware, doesn't interact well with `StreamInterface` and not very helpful for getting stuff out of a PDB. Eventually we should migrate the old readobj `COFFDumper` code to these new structures, or at least merge their functionality somehow. 2. A `ModuleSubstream` visitor is introduced. Depending on where your module substream array comes from, different subsets of record types can be expected. We are already hand parsing these substream arrays in many places especially in `COFFDumper.cpp`. In the future we can migrate these paths to the visitor as well, which should reduce a lot of code in `COFFDumper.cpp`. Differential Revision: http://reviews.llvm.org/D20936 Reviewed By: ruiu, majnemer llvm-svn: 271621
43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
//===- ModuleSubstream.cpp --------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/DebugInfo/CodeView/ModuleSubstream.h"
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#include "llvm/DebugInfo/CodeView/StreamReader.h"
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using namespace llvm;
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using namespace llvm::codeview;
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ModuleSubstream::ModuleSubstream() : Kind(ModuleSubstreamKind::None) {}
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ModuleSubstream::ModuleSubstream(ModuleSubstreamKind Kind, StreamRef Data)
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: Kind(Kind), Data(Data) {}
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Error ModuleSubstream::initialize(StreamRef Stream, ModuleSubstream &Info) {
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const ModuleSubsectionHeader *Header;
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StreamReader Reader(Stream);
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if (auto EC = Reader.readObject(Header))
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return EC;
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ModuleSubstreamKind Kind =
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static_cast<ModuleSubstreamKind>(uint32_t(Header->Kind));
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if (auto EC = Reader.readStreamRef(Info.Data, Header->Length))
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return EC;
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Info.Kind = Kind;
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return Error::success();
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}
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uint32_t ModuleSubstream::getRecordLength() const {
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return sizeof(ModuleSubsectionHeader) + Data.getLength();
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}
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ModuleSubstreamKind ModuleSubstream::getSubstreamKind() const { return Kind; }
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StreamRef ModuleSubstream::getRecordData() const { return Data; }
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