002e244717
The patch adds one more partition to the MIPS GOT. This time it is for TLS related GOT entries. Such entries are located after 'local' and 'global' ones. We cannot get a final offset for these entries at the time of creation because we do not know size of 'local' and 'global' partitions. So we have to adjust the offset later using `getMipsTlsOffset()` method. All MIPS TLS relocations which need GOT entries operates MIPS style GOT offset - 'offset from the GOT's beginning' - MipsGPOffset constant. That is why I add new types of relocation expressions. One more difference from othe ABIs is that the MIPS ABI does not support any TLS relocation relaxations. I decided to make a separate function `handleMipsTlsRelocation` and put MIPS TLS relocation handling code there. It is similar to `handleTlsRelocation` routine and duplicates its code. But it allows to make the code cleaner and prevent pollution of the `handleTlsRelocation` by MIPS 'if' statements. Differential Revision: http://reviews.llvm.org/D21606 llvm-svn: 273569
82 lines
1.6 KiB
C++
82 lines
1.6 KiB
C++
//===- Relocations.h -------------------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Linker
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLD_ELF_RELOCATIONS_H
|
|
#define LLD_ELF_RELOCATIONS_H
|
|
|
|
#include "lld/Core/LLVM.h"
|
|
|
|
namespace lld {
|
|
namespace elf {
|
|
class SymbolBody;
|
|
template <class ELFT> class InputSection;
|
|
template <class ELFT> class InputSectionBase;
|
|
|
|
enum RelExpr {
|
|
R_ABS,
|
|
R_GOT,
|
|
R_GOTONLY_PC,
|
|
R_GOTREL,
|
|
R_GOT_FROM_END,
|
|
R_GOT_OFF,
|
|
R_GOT_PAGE_PC,
|
|
R_GOT_PC,
|
|
R_HINT,
|
|
R_MIPS_GOT_LOCAL_PAGE,
|
|
R_MIPS_GOT_OFF,
|
|
R_MIPS_TLSGD,
|
|
R_MIPS_TLSLD,
|
|
R_NEG_TLS,
|
|
R_PAGE_PC,
|
|
R_PC,
|
|
R_PLT,
|
|
R_PLT_PC,
|
|
R_PLT_PAGE_PC,
|
|
R_PPC_OPD,
|
|
R_PPC_PLT_OPD,
|
|
R_PPC_TOC,
|
|
R_RELAX_GOT_PC,
|
|
R_RELAX_GOT_PC_NOPIC,
|
|
R_RELAX_TLS_GD_TO_IE,
|
|
R_RELAX_TLS_GD_TO_IE_END,
|
|
R_RELAX_TLS_GD_TO_IE_ABS,
|
|
R_RELAX_TLS_GD_TO_IE_PAGE_PC,
|
|
R_RELAX_TLS_GD_TO_LE,
|
|
R_RELAX_TLS_GD_TO_LE_NEG,
|
|
R_RELAX_TLS_IE_TO_LE,
|
|
R_RELAX_TLS_LD_TO_LE,
|
|
R_SIZE,
|
|
R_THUNK,
|
|
R_TLS,
|
|
R_TLSDESC,
|
|
R_TLSDESC_PAGE,
|
|
R_TLSGD,
|
|
R_TLSGD_PC,
|
|
R_TLSLD,
|
|
R_TLSLD_PC
|
|
};
|
|
|
|
template <class ELFT> struct Relocation {
|
|
RelExpr Expr;
|
|
uint32_t Type;
|
|
InputSectionBase<ELFT> *InputSec;
|
|
uint64_t Offset;
|
|
uint64_t Addend;
|
|
SymbolBody *Sym;
|
|
};
|
|
|
|
template <class ELFT> void scanRelocations(InputSection<ELFT> &);
|
|
|
|
template <class ELFT>
|
|
void scanRelocations(InputSectionBase<ELFT> &, const typename ELFT::Shdr &);
|
|
}
|
|
}
|
|
|
|
#endif
|