140 lines
6.1 KiB
C++
140 lines
6.1 KiB
C++
|
//===-- SparcELFObjectWriter.cpp - Sparc ELF Writer -----------------------===//
|
||
|
|
//
|
||
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
||
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
||
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
|
||
|
|
#include "MCTargetDesc/SparcFixupKinds.h"
|
||
|
|
#include "MCTargetDesc/SparcMCExpr.h"
|
||
|
|
#include "MCTargetDesc/SparcMCTargetDesc.h"
|
||
|
|
#include "llvm/ADT/STLExtras.h"
|
||
|
|
#include "llvm/MC/MCELFObjectWriter.h"
|
||
|
|
#include "llvm/MC/MCExpr.h"
|
||
|
|
#include "llvm/MC/MCObjectWriter.h"
|
||
|
|
#include "llvm/MC/MCValue.h"
|
||
|
|
#include "llvm/Support/ErrorHandling.h"
|
||
|
|
|
||
|
|
using namespace llvm;
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
class SparcELFObjectWriter : public MCELFObjectTargetWriter {
|
||
|
|
public:
|
||
|
|
SparcELFObjectWriter(bool Is64Bit, uint8_t OSABI)
|
||
|
|
: MCELFObjectTargetWriter(Is64Bit, OSABI,
|
||
|
|
Is64Bit ? ELF::EM_SPARCV9 : ELF::EM_SPARC,
|
||
|
|
/*HasRelocationAddend*/ true) {}
|
||
|
|
|
||
|
|
~SparcELFObjectWriter() override {}
|
||
|
|
|
||
|
|
protected:
|
||
|
|
unsigned getRelocType(MCContext &Ctx, const MCValue &Target,
|
||
|
|
const MCFixup &Fixup, bool IsPCRel) const override;
|
||
|
|
|
||
|
|
bool needsRelocateWithSymbol(const MCSymbol &Sym,
|
||
|
|
unsigned Type) const override;
|
||
|
|
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
unsigned SparcELFObjectWriter::getRelocType(MCContext &Ctx,
|
||
|
|
const MCValue &Target,
|
||
|
|
const MCFixup &Fixup,
|
||
|
|
bool IsPCRel) const {
|
||
|
|
|
||
|
|
if (const SparcMCExpr *SExpr = dyn_cast<SparcMCExpr>(Fixup.getValue())) {
|
||
|
|
if (SExpr->getKind() == SparcMCExpr::VK_Sparc_R_DISP32)
|
||
|
|
return ELF::R_SPARC_DISP32;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (IsPCRel) {
|
||
|
|
switch(Fixup.getTargetKind()) {
|
||
|
|
default:
|
||
|
|
llvm_unreachable("Unimplemented fixup -> relocation");
|
||
|
|
case FK_Data_1: return ELF::R_SPARC_DISP8;
|
||
|
|
case FK_Data_2: return ELF::R_SPARC_DISP16;
|
||
|
|
case FK_Data_4: return ELF::R_SPARC_DISP32;
|
||
|
|
case FK_Data_8: return ELF::R_SPARC_DISP64;
|
||
|
|
case Sparc::fixup_sparc_call30: return ELF::R_SPARC_WDISP30;
|
||
|
|
case Sparc::fixup_sparc_br22: return ELF::R_SPARC_WDISP22;
|
||
|
|
case Sparc::fixup_sparc_br19: return ELF::R_SPARC_WDISP19;
|
||
|
|
case Sparc::fixup_sparc_pc22: return ELF::R_SPARC_PC22;
|
||
|
|
case Sparc::fixup_sparc_pc10: return ELF::R_SPARC_PC10;
|
||
|
|
case Sparc::fixup_sparc_wplt30: return ELF::R_SPARC_WPLT30;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
switch(Fixup.getTargetKind()) {
|
||
|
|
default:
|
||
|
|
llvm_unreachable("Unimplemented fixup -> relocation");
|
||
|
|
case FK_Data_1: return ELF::R_SPARC_8;
|
||
|
|
case FK_Data_2: return ((Fixup.getOffset() % 2)
|
||
|
|
? ELF::R_SPARC_UA16
|
||
|
|
: ELF::R_SPARC_16);
|
||
|
|
case FK_Data_4: return ((Fixup.getOffset() % 4)
|
||
|
|
? ELF::R_SPARC_UA32
|
||
|
|
: ELF::R_SPARC_32);
|
||
|
|
case FK_Data_8: return ((Fixup.getOffset() % 8)
|
||
|
|
? ELF::R_SPARC_UA64
|
||
|
|
: ELF::R_SPARC_64);
|
||
|
|
case Sparc::fixup_sparc_13: return ELF::R_SPARC_13;
|
||
|
|
case Sparc::fixup_sparc_hi22: return ELF::R_SPARC_HI22;
|
||
|
|
case Sparc::fixup_sparc_lo10: return ELF::R_SPARC_LO10;
|
||
|
|
case Sparc::fixup_sparc_h44: return ELF::R_SPARC_H44;
|
||
|
|
case Sparc::fixup_sparc_m44: return ELF::R_SPARC_M44;
|
||
|
|
case Sparc::fixup_sparc_l44: return ELF::R_SPARC_L44;
|
||
|
|
case Sparc::fixup_sparc_hh: return ELF::R_SPARC_HH22;
|
||
|
|
case Sparc::fixup_sparc_hm: return ELF::R_SPARC_HM10;
|
||
|
|
case Sparc::fixup_sparc_got22: return ELF::R_SPARC_GOT22;
|
||
|
|
case Sparc::fixup_sparc_got10: return ELF::R_SPARC_GOT10;
|
||
|
|
case Sparc::fixup_sparc_got13: return ELF::R_SPARC_GOT13;
|
||
|
|
case Sparc::fixup_sparc_tls_gd_hi22: return ELF::R_SPARC_TLS_GD_HI22;
|
||
|
|
case Sparc::fixup_sparc_tls_gd_lo10: return ELF::R_SPARC_TLS_GD_LO10;
|
||
|
|
case Sparc::fixup_sparc_tls_gd_add: return ELF::R_SPARC_TLS_GD_ADD;
|
||
|
|
case Sparc::fixup_sparc_tls_gd_call: return ELF::R_SPARC_TLS_GD_CALL;
|
||
|
|
case Sparc::fixup_sparc_tls_ldm_hi22: return ELF::R_SPARC_TLS_LDM_HI22;
|
||
|
|
case Sparc::fixup_sparc_tls_ldm_lo10: return ELF::R_SPARC_TLS_LDM_LO10;
|
||
|
|
case Sparc::fixup_sparc_tls_ldm_add: return ELF::R_SPARC_TLS_LDM_ADD;
|
||
|
|
case Sparc::fixup_sparc_tls_ldm_call: return ELF::R_SPARC_TLS_LDM_CALL;
|
||
|
|
case Sparc::fixup_sparc_tls_ldo_hix22: return ELF::R_SPARC_TLS_LDO_HIX22;
|
||
|
|
case Sparc::fixup_sparc_tls_ldo_lox10: return ELF::R_SPARC_TLS_LDO_LOX10;
|
||
|
|
case Sparc::fixup_sparc_tls_ldo_add: return ELF::R_SPARC_TLS_LDO_ADD;
|
||
|
|
case Sparc::fixup_sparc_tls_ie_hi22: return ELF::R_SPARC_TLS_IE_HI22;
|
||
|
|
case Sparc::fixup_sparc_tls_ie_lo10: return ELF::R_SPARC_TLS_IE_LO10;
|
||
|
|
case Sparc::fixup_sparc_tls_ie_ld: return ELF::R_SPARC_TLS_IE_LD;
|
||
|
|
case Sparc::fixup_sparc_tls_ie_ldx: return ELF::R_SPARC_TLS_IE_LDX;
|
||
|
|
case Sparc::fixup_sparc_tls_ie_add: return ELF::R_SPARC_TLS_IE_ADD;
|
||
|
|
case Sparc::fixup_sparc_tls_le_hix22: return ELF::R_SPARC_TLS_LE_HIX22;
|
||
|
|
case Sparc::fixup_sparc_tls_le_lox10: return ELF::R_SPARC_TLS_LE_LOX10;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ELF::R_SPARC_NONE;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool SparcELFObjectWriter::needsRelocateWithSymbol(const MCSymbol &Sym,
|
||
|
|
unsigned Type) const {
|
||
|
|
switch (Type) {
|
||
|
|
default:
|
||
|
|
return false;
|
||
|
|
|
||
|
|
// All relocations that use a GOT need a symbol, not an offset, as
|
||
|
|
// the offset of the symbol within the section is irrelevant to
|
||
|
|
// where the GOT entry is. Don't need to list all the TLS entries,
|
||
|
|
// as they're all marked as requiring a symbol anyways.
|
||
|
|
case ELF::R_SPARC_GOT10:
|
||
|
|
case ELF::R_SPARC_GOT13:
|
||
|
|
case ELF::R_SPARC_GOT22:
|
||
|
|
case ELF::R_SPARC_GOTDATA_HIX22:
|
||
|
|
case ELF::R_SPARC_GOTDATA_LOX10:
|
||
|
|
case ELF::R_SPARC_GOTDATA_OP_HIX22:
|
||
|
|
case ELF::R_SPARC_GOTDATA_OP_LOX10:
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
std::unique_ptr<MCObjectTargetWriter>
|
||
|
|
llvm::createSparcELFObjectWriter(bool Is64Bit, uint8_t OSABI) {
|
||
|
|
return std::make_unique<SparcELFObjectWriter>(Is64Bit, OSABI);
|
||
|
|
}
|