1f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines//===- ELFAttributeValue.cpp ----------------------------------------------===// 2f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines// 3f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines// The MCLinker Project 4f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines// 5f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines// This file is distributed under the University of Illinois Open Source 6f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines// License. See LICENSE.TXT for details. 7f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines// 8f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines//===----------------------------------------------------------------------===// 9f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines 1037b74a387bb3993387029859c2d9d051c41c724eStephen Hines#include "mcld/Target/ELFAttributeValue.h" 11f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines 12f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines#include <llvm/Support/ErrorHandling.h> 13f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines 1437b74a387bb3993387029859c2d9d051c41c724eStephen Hines#include "mcld/Support/LEB128.h" 15f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines 1637b74a387bb3993387029859c2d9d051c41c724eStephen Hinesnamespace mcld { 17f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines 1837b74a387bb3993387029859c2d9d051c41c724eStephen Hinessize_t ELFAttributeValue::getSize() const { 19f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines size_t size = 0; 20f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines 21f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines if (isIntValue()) 22f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines size += leb128::size<uint32_t>(m_IntValue); 23f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines 24f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines if (isStringValue()) 25f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines size += m_StringValue.length() + 1 /* for NULL-terminator */; 26f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines 27f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines if (size <= 0) 28f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines // unknown type of the value 29f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines llvm::report_fatal_error("Unknown type of attribtue value!"); 30f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines 31f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines return size; 32f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines} 33f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines 3437b74a387bb3993387029859c2d9d051c41c724eStephen Hinesbool ELFAttributeValue::isDefaultValue() const { 35f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines if (isUninitialized()) { 36f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines // Uninitialized attribute means default value 37f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines return true; 38f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines } else { 39f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines if (isIntValue() && (m_IntValue != 0)) 40f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines return false; 41f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines if (isStringValue() && !m_StringValue.empty()) 42f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines return false; 43f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines 44f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines // The value hold in the storage is the "default value by default" (i.e., 0 45f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines // for int type, empty string for string type), but we need to check whether 46f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines // the "default value" is defined (that is, hasNoDefault() = false.) 47f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines return !hasNoDefault(); 48f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines } 49f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines // unreachable 50f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines} 51f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines 5237b74a387bb3993387029859c2d9d051c41c724eStephen Hinesbool ELFAttributeValue::equals(const ELFAttributeValue& pValue) const { 53f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines if ((pValue.type() != m_Type) || isUninitialized()) 54f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines return false; 55f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines 56f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines if (isIntValue() && (m_IntValue != pValue.getIntValue())) 57f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines return false; 58f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines 59f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines if (isStringValue() && (m_StringValue != pValue.getStringValue())) 60f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines return false; 61f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines 62f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines return true; 63f33f6de54db174aa679a4b6d1e040d37e95541c0Stephen Hines} 6437b74a387bb3993387029859c2d9d051c41c724eStephen Hines 6537b74a387bb3993387029859c2d9d051c41c724eStephen Hines} // namespace mcld 66