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//===-- DWARFAbbreviationDeclaration.cpp ----------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "DWARFAbbreviationDeclaration.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
using namespace dwarf;
bool
DWARFAbbreviationDeclaration::extract(DataExtractor data, uint32_t* offset_ptr){
return extract(data, offset_ptr, data.getULEB128(offset_ptr));
}
bool
DWARFAbbreviationDeclaration::extract(DataExtractor data, uint32_t* offset_ptr,
uint32_t code) {
Code = code;
Attributes.clear();
if (Code) {
Tag = data.getULEB128(offset_ptr);
HasChildren = data.getU8(offset_ptr);
while (data.isValidOffset(*offset_ptr)) {
uint16_t attr = data.getULEB128(offset_ptr);
uint16_t form = data.getULEB128(offset_ptr);
if (attr && form)
Attributes.push_back(DWARFAttribute(attr, form));
else
break;
}
return Tag != 0;
} else {
Tag = 0;
HasChildren = false;
}
return false;
}
void DWARFAbbreviationDeclaration::dump(raw_ostream &OS) const {
const char *tagString = TagString(getTag());
OS << '[' << getCode() << "] ";
if (tagString)
OS << tagString;
else
OS << format("DW_TAG_Unknown_%x", getTag());
OS << "\tDW_CHILDREN_" << (hasChildren() ? "yes" : "no") << '\n';
for (unsigned i = 0, e = Attributes.size(); i != e; ++i) {
OS << '\t';
const char *attrString = AttributeString(Attributes[i].getAttribute());
if (attrString)
OS << attrString;
else
OS << format("DW_AT_Unknown_%x", Attributes[i].getAttribute());
OS << '\t';
const char *formString = FormEncodingString(Attributes[i].getForm());
if (formString)
OS << formString;
else
OS << format("DW_FORM_Unknown_%x", Attributes[i].getForm());
OS << '\n';
}
OS << '\n';
}
uint32_t
DWARFAbbreviationDeclaration::findAttributeIndex(uint16_t attr) const {
for (uint32_t i = 0, e = Attributes.size(); i != e; ++i) {
if (Attributes[i].getAttribute() == attr)
return i;
}
return -1U;
}
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