1cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao//===- AlignFragment.h ----------------------------------------------------===// 2cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao// 3cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao// The MCLinker Project 4cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao// 5cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao// This file is distributed under the University of Illinois Open Source 6cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao// License. See LICENSE.TXT for details. 7cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao// 8cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao//===----------------------------------------------------------------------===// 937b74a387bb3993387029859c2d9d051c41c724eStephen Hines#ifndef MCLD_FRAGMENT_ALIGNFRAGMENT_H_ 1037b74a387bb3993387029859c2d9d051c41c724eStephen Hines#define MCLD_FRAGMENT_ALIGNFRAGMENT_H_ 11cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao 1237b74a387bb3993387029859c2d9d051c41c724eStephen Hines#include "mcld/Fragment/Fragment.h" 13cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao 1422add6ff3426df1a85089fe6a6e1597ee3b6f300Shih-wei Liaonamespace mcld { 15cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao 16cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liaoclass SectionData; 17cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao 1837b74a387bb3993387029859c2d9d051c41c724eStephen Hinesclass AlignFragment : public Fragment { 1937b74a387bb3993387029859c2d9d051c41c724eStephen Hines public: 2037b74a387bb3993387029859c2d9d051c41c724eStephen Hines AlignFragment(unsigned int pAlignment, 2137b74a387bb3993387029859c2d9d051c41c724eStephen Hines int64_t pValue, 2237b74a387bb3993387029859c2d9d051c41c724eStephen Hines unsigned int pValueSize, 2337b74a387bb3993387029859c2d9d051c41c724eStephen Hines unsigned int pMaxBytesToEmit, 2437b74a387bb3993387029859c2d9d051c41c724eStephen Hines SectionData* pSD = NULL); 25cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao 26cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao unsigned int getAlignment() const { return m_Alignment; } 27cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao 28cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao int64_t getValue() const { return m_Value; } 29cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao 30cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao unsigned int getValueSize() const { return m_ValueSize; } 31cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao 32cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao unsigned int getMaxBytesToEmit() const { return m_MaxBytesToEmit; } 33cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao 34cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao bool hasEmitNops() const { return m_bEmitNops; } 35cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao 36cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao void setEmitNops(bool pValue) { m_bEmitNops = pValue; } 37cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao 3837b74a387bb3993387029859c2d9d051c41c724eStephen Hines static bool classof(const Fragment* F) { 3937b74a387bb3993387029859c2d9d051c41c724eStephen Hines return F->getKind() == Fragment::Alignment; 4037b74a387bb3993387029859c2d9d051c41c724eStephen Hines } 4137b74a387bb3993387029859c2d9d051c41c724eStephen Hines 4237b74a387bb3993387029859c2d9d051c41c724eStephen Hines static bool classof(const AlignFragment*) { return true; } 43cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao 4422add6ff3426df1a85089fe6a6e1597ee3b6f300Shih-wei Liao size_t size() const; 4522add6ff3426df1a85089fe6a6e1597ee3b6f300Shih-wei Liao 4637b74a387bb3993387029859c2d9d051c41c724eStephen Hines private: 47cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao /// Alignment - The alignment to ensure, in bytes. 48cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao unsigned int m_Alignment; 49cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao 50cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao /// Value - Value to use for filling padding bytes. 51cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao int64_t m_Value; 52cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao 53cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao /// ValueSize - The size of the integer (in bytes) of \arg Value. 54cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao unsigned int m_ValueSize; 55cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao 56cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao /// MaxBytesToEmit - The maximum number of bytes to emit; if the alignment 57cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao /// cannot be satisfied in this width then this fragment is ignored. 58cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao unsigned int m_MaxBytesToEmit; 59cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao 60cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao /// EmitNops - Flag to indicate that (optimal) NOPs should be emitted instead 61cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao /// of using the provided value. The exact interpretation of this flag is 62cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao /// target dependent. 63cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao bool m_bEmitNops : 1; 64cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao}; 65cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao 6637b74a387bb3993387029859c2d9d051c41c724eStephen Hines} // namespace mcld 67cedee4b38f4786845183be7f5916dd520a170ae0Shih-wei Liao 6837b74a387bb3993387029859c2d9d051c41c724eStephen Hines#endif // MCLD_FRAGMENT_ALIGNFRAGMENT_H_ 69