blob: cd692ac7c7db59cd82061c1c7774be35b3918976 [file] [log] [blame]
//===- MipsELFDynamic.cpp -------------------------------------------------===//
//
// The MCLinker Project
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include <mcld/LD/ELFFileFormat.h>
#include <mcld/Target/GNULDBackend.h>
#include "MipsELFDynamic.h"
#include "MipsLDBackend.h"
using namespace mcld;
// MIPS mandatory dynamic section entries
enum {
MIPS_RLD_VERSION = 0x70000001,
MIPS_FLAGS = 0x70000005,
MIPS_BASE_ADDRESS = 0x70000006,
MIPS_LOCAL_GOTNO = 0x7000000a,
MIPS_SYMTABNO = 0x70000011,
MIPS_GOTSYM = 0x70000013,
};
MipsELFDynamic::MipsELFDynamic(const MipsGNULDBackend& pParent)
: ELFDynamic(pParent),
m_pParent(pParent)
{
}
MipsELFDynamic::~MipsELFDynamic()
{
}
void MipsELFDynamic::reserveTargetEntries(const ELFFileFormat& pFormat)
{
// reservePLTGOT
if (pFormat.hasGOT())
reserveOne(llvm::ELF::DT_PLTGOT);
reserveOne(MIPS_RLD_VERSION);
reserveOne(MIPS_FLAGS);
reserveOne(MIPS_BASE_ADDRESS);
reserveOne(MIPS_LOCAL_GOTNO);
reserveOne(MIPS_SYMTABNO);
reserveOne(MIPS_GOTSYM);
}
void MipsELFDynamic::applyTargetEntries(const ELFFileFormat& pFormat)
{
// applyPLTGOT
if (pFormat.hasGOT())
applyOne(llvm::ELF::DT_PLTGOT, pFormat.getGOT().addr());
applyOne(MIPS_RLD_VERSION, 1);
applyOne(MIPS_FLAGS, 0);
applyOne(MIPS_BASE_ADDRESS, 0);
applyOne(MIPS_LOCAL_GOTNO, getLocalGotNum(pFormat));
applyOne(MIPS_SYMTABNO, getSymTabNum(pFormat));
applyOne(MIPS_GOTSYM, getGotSym(pFormat));
}
size_t MipsELFDynamic::getSymTabNum(const ELFFileFormat& pFormat) const
{
if (!pFormat.hasDynSymTab())
return 0;
const LDSection& dynsym = pFormat.getDynSymTab();
return dynsym.size() / symbolSize();
}
size_t MipsELFDynamic::getGotSym(const ELFFileFormat& pFormat) const
{
if (!pFormat.hasGOT())
return 0;
return getSymTabNum(pFormat) -
m_pParent.getGOT().getTotalNum() +
m_pParent.getGOT().getLocalNum();
}
size_t MipsELFDynamic::getLocalGotNum(const ELFFileFormat& pFormat) const
{
if (!pFormat.hasGOT())
return 0;
return m_pParent.getGOT().getLocalNum();
}