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66 lines
1.7 KiB
66 lines
1.7 KiB
//===- ELFAttributeValue.cpp ----------------------------------------------===//
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//
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// The MCLinker Project
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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 "mcld/Target/ELFAttributeValue.h"
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#include <llvm/Support/ErrorHandling.h>
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#include "mcld/Support/LEB128.h"
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namespace mcld {
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size_t ELFAttributeValue::getSize() const {
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size_t size = 0;
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if (isIntValue())
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size += leb128::size<uint32_t>(m_IntValue);
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if (isStringValue())
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size += m_StringValue.length() + 1 /* for NULL-terminator */;
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if (size <= 0)
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// unknown type of the value
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llvm::report_fatal_error("Unknown type of attribtue value!");
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return size;
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}
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bool ELFAttributeValue::isDefaultValue() const {
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if (isUninitialized()) {
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// Uninitialized attribute means default value
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return true;
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} else {
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if (isIntValue() && (m_IntValue != 0))
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return false;
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if (isStringValue() && !m_StringValue.empty())
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return false;
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// The value hold in the storage is the "default value by default" (i.e., 0
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// for int type, empty string for string type), but we need to check whether
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// the "default value" is defined (that is, hasNoDefault() = false.)
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return !hasNoDefault();
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}
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// unreachable
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}
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bool ELFAttributeValue::equals(const ELFAttributeValue& pValue) const {
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if ((pValue.type() != m_Type) || isUninitialized())
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return false;
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if (isIntValue() && (m_IntValue != pValue.getIntValue()))
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return false;
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if (isStringValue() && (m_StringValue != pValue.getStringValue()))
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return false;
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return true;
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}
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} // namespace mcld
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