a8b6bed223
all of the features in the current working draft of the upcoming C++ standard, provisionally named C++1y. The code generator's performance is greatly increased, and the loop auto-vectorizer is now enabled at -Os and -O2 in addition to -O3. The PowerPC backend has made several major improvements to code generation quality and compile time, and the X86, SPARC, ARM32, Aarch64 and SystemZ backends have all seen major feature work. Release notes for llvm and clang can be found here: <http://llvm.org/releases/3.4/docs/ReleaseNotes.html> <http://llvm.org/releases/3.4/tools/clang/docs/ReleaseNotes.html> MFC after: 1 month
98 lines
2.5 KiB
C++
98 lines
2.5 KiB
C++
//===-- DWARFAbbreviationDeclaration.cpp ----------------------------------===//
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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 "DWARFAbbreviationDeclaration.h"
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#include "llvm/Support/Dwarf.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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using namespace dwarf;
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void DWARFAbbreviationDeclaration::clear() {
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Code = 0;
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Tag = 0;
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HasChildren = false;
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Attributes.clear();
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}
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DWARFAbbreviationDeclaration::DWARFAbbreviationDeclaration() {
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clear();
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}
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bool
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DWARFAbbreviationDeclaration::extract(DataExtractor Data, uint32_t* OffsetPtr) {
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clear();
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Code = Data.getULEB128(OffsetPtr);
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if (Code == 0) {
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return false;
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}
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Tag = Data.getULEB128(OffsetPtr);
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uint8_t ChildrenByte = Data.getU8(OffsetPtr);
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HasChildren = (ChildrenByte == DW_CHILDREN_yes);
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while (true) {
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uint32_t CurOffset = *OffsetPtr;
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uint16_t Attr = Data.getULEB128(OffsetPtr);
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if (CurOffset == *OffsetPtr) {
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clear();
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return false;
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}
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CurOffset = *OffsetPtr;
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uint16_t Form = Data.getULEB128(OffsetPtr);
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if (CurOffset == *OffsetPtr) {
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clear();
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return false;
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}
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if (Attr == 0 && Form == 0)
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break;
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Attributes.push_back(AttributeSpec(Attr, Form));
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}
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if (Tag == 0) {
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clear();
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return false;
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}
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return true;
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}
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void DWARFAbbreviationDeclaration::dump(raw_ostream &OS) const {
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const char *tagString = TagString(getTag());
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OS << '[' << getCode() << "] ";
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if (tagString)
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OS << tagString;
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else
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OS << format("DW_TAG_Unknown_%x", getTag());
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OS << "\tDW_CHILDREN_" << (hasChildren() ? "yes" : "no") << '\n';
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for (unsigned i = 0, e = Attributes.size(); i != e; ++i) {
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OS << '\t';
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const char *attrString = AttributeString(Attributes[i].Attr);
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if (attrString)
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OS << attrString;
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else
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OS << format("DW_AT_Unknown_%x", Attributes[i].Attr);
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OS << '\t';
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const char *formString = FormEncodingString(Attributes[i].Form);
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if (formString)
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OS << formString;
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else
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OS << format("DW_FORM_Unknown_%x", Attributes[i].Form);
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OS << '\n';
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}
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OS << '\n';
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}
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uint32_t
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DWARFAbbreviationDeclaration::findAttributeIndex(uint16_t attr) const {
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for (uint32_t i = 0, e = Attributes.size(); i != e; ++i) {
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if (Attributes[i].Attr == attr)
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return i;
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}
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return -1U;
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}
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