forked from OSchip/llvm-project
84 lines
2.3 KiB
C++
84 lines
2.3 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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bool
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DWARFAbbreviationDeclaration::extract(DataExtractor data, uint32_t* offset_ptr){
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return extract(data, offset_ptr, data.getULEB128(offset_ptr));
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}
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bool
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DWARFAbbreviationDeclaration::extract(DataExtractor data, uint32_t* offset_ptr,
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uint32_t code) {
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Code = code;
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Attributes.clear();
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if (Code) {
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Tag = data.getULEB128(offset_ptr);
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HasChildren = data.getU8(offset_ptr);
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while (data.isValidOffset(*offset_ptr)) {
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uint16_t attr = data.getULEB128(offset_ptr);
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uint16_t form = data.getULEB128(offset_ptr);
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if (attr && form)
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Attributes.push_back(DWARFAttribute(attr, form));
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else
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break;
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}
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return Tag != 0;
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} else {
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Tag = 0;
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HasChildren = false;
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}
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return false;
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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].getAttribute());
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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].getAttribute());
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OS << '\t';
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const char *formString = FormEncodingString(Attributes[i].getForm());
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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].getForm());
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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].getAttribute() == 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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