//
//===----------------------------------------------------------------------===//
-#include "llvm/MC/MCAsmBackend.h"
#include "MCTargetDesc/PPCMCTargetDesc.h"
#include "MCTargetDesc/PPCFixupKinds.h"
+#include "llvm/MC/MCAsmBackend.h"
#include "llvm/MC/MCELFObjectWriter.h"
+#include "llvm/MC/MCFixupKindInfo.h"
#include "llvm/MC/MCMachObjectWriter.h"
-#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCObjectWriter.h"
+#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCValue.h"
#include "llvm/Object/MachOFormat.h"
#include "llvm/Support/ELF.h"
#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Target/TargetRegistry.h"
+#include "llvm/Support/TargetRegistry.h"
using namespace llvm;
static unsigned adjustFixupValue(unsigned Kind, uint64_t Value) {
case FK_Data_1:
case FK_Data_2:
case FK_Data_4:
+ case FK_Data_8:
+ case PPC::fixup_ppc_toc:
+ case PPC::fixup_ppc_tlsreg:
+ case PPC::fixup_ppc_tlsgd:
return Value;
+ case PPC::fixup_ppc_lo14:
+ case PPC::fixup_ppc_toc16_ds:
+ return (Value & 0xffff) << 2;
case PPC::fixup_ppc_brcond14:
- return Value & 0x3ffc;
+ return Value & 0xfffc;
case PPC::fixup_ppc_br24:
return Value & 0x3fffffc;
#if 0
case PPC::fixup_ppc_ha16:
return ((Value >> 16) + ((Value & 0x8000) ? 1 : 0)) & 0xffff;
case PPC::fixup_ppc_lo16:
+ case PPC::fixup_ppc_toc16:
return Value & 0xffff;
}
}
void RecordRelocation(MachObjectWriter *Writer,
const MCAssembler &Asm, const MCAsmLayout &Layout,
const MCFragment *Fragment, const MCFixup &Fixup,
- MCValue Target, uint64_t &FixedValue) {}
-};
-
-class PPCELFObjectWriter : public MCELFObjectTargetWriter {
-public:
- PPCELFObjectWriter(bool Is64Bit, Triple::OSType OSType, uint16_t EMachine,
- bool HasRelocationAddend, bool isLittleEndian)
- : MCELFObjectTargetWriter(Is64Bit, OSType, EMachine, HasRelocationAddend) {}
+ MCValue Target, uint64_t &FixedValue) {
+ llvm_unreachable("Relocation emission for MachO/PPC unimplemented!");
+ }
};
class PPCAsmBackend : public MCAsmBackend {
{ "fixup_ppc_brcond14", 16, 14, MCFixupKindInfo::FKF_IsPCRel },
{ "fixup_ppc_lo16", 16, 16, 0 },
{ "fixup_ppc_ha16", 16, 16, 0 },
- { "fixup_ppc_lo14", 16, 14, 0 }
+ { "fixup_ppc_lo14", 16, 14, 0 },
+ { "fixup_ppc_toc", 0, 64, 0 },
+ { "fixup_ppc_toc16", 16, 16, 0 },
+ { "fixup_ppc_toc16_ds", 16, 14, 0 },
+ { "fixup_ppc_tlsreg", 0, 0, 0 },
+ { "fixup_ppc_tlsgd", 0, 0, 0 }
};
-
+
if (Kind < FirstTargetFixupKind)
return MCAsmBackend::getFixupKindInfo(Kind);
-
+
assert(unsigned(Kind - FirstTargetFixupKind) < getNumFixupKinds() &&
"Invalid kind!");
return Infos[Kind - FirstTargetFixupKind];
}
-
- bool MayNeedRelaxation(const MCInst &Inst) const {
+
+ void applyFixup(const MCFixup &Fixup, char *Data, unsigned DataSize,
+ uint64_t Value) const {
+ Value = adjustFixupValue(Fixup.getKind(), Value);
+ if (!Value) return; // Doesn't change encoding.
+
+ unsigned Offset = Fixup.getOffset();
+
+ // For each byte of the fragment that the fixup touches, mask in the bits
+ // from the fixup value. The Value has been "split up" into the appropriate
+ // bitfields above.
+ for (unsigned i = 0; i != 4; ++i)
+ Data[Offset + i] |= uint8_t((Value >> ((4 - i - 1)*8)) & 0xff);
+ }
+
+ bool mayNeedRelaxation(const MCInst &Inst) const {
// FIXME.
return false;
}
-
- void RelaxInstruction(const MCInst &Inst, MCInst &Res) const {
+
+ bool fixupNeedsRelaxation(const MCFixup &Fixup,
+ uint64_t Value,
+ const MCInstFragment *DF,
+ const MCAsmLayout &Layout) const {
// FIXME.
- assert(0 && "RelaxInstruction() unimplemented");
+ llvm_unreachable("relaxInstruction() unimplemented");
}
-
- bool WriteNopData(uint64_t Count, MCObjectWriter *OW) const {
+
+
+ void relaxInstruction(const MCInst &Inst, MCInst &Res) const {
+ // FIXME.
+ llvm_unreachable("relaxInstruction() unimplemented");
+ }
+
+ bool writeNopData(uint64_t Count, MCObjectWriter *OW) const {
// FIXME: Zero fill for now. That's not right, but at least will get the
// section size right.
for (uint64_t i = 0; i != Count; ++i)
OW->Write8(0);
return true;
- }
-
+ }
+
unsigned getPointerSize() const {
StringRef Name = TheTarget.getName();
if (Name == "ppc64") return 8;
class DarwinPPCAsmBackend : public PPCAsmBackend {
public:
DarwinPPCAsmBackend(const Target &T) : PPCAsmBackend(T) { }
-
- void ApplyFixup(const MCFixup &Fixup, char *Data, unsigned DataSize,
- uint64_t Value) const {
- assert(0 && "UNIMP");
- }
-
+
MCObjectWriter *createObjectWriter(raw_ostream &OS) const {
bool is64 = getPointerSize() == 8;
return createMachObjectWriter(new PPCMachObjectWriter(
object::mach::CSPPC_ALL),
OS, /*IsLittleEndian=*/false);
}
-
+
virtual bool doesSectionRequireSymbols(const MCSection &Section) const {
return false;
}
};
class ELFPPCAsmBackend : public PPCAsmBackend {
- Triple::OSType OSType;
+ uint8_t OSABI;
public:
- ELFPPCAsmBackend(const Target &T, Triple::OSType OSType) :
- PPCAsmBackend(T), OSType(OSType) { }
-
- void ApplyFixup(const MCFixup &Fixup, char *Data, unsigned DataSize,
- uint64_t Value) const {
- Value = adjustFixupValue(Fixup.getKind(), Value);
- if (!Value) return; // Doesn't change encoding.
-
- unsigned Offset = Fixup.getOffset();
-
- // For each byte of the fragment that the fixup touches, mask in the bits from
- // the fixup value. The Value has been "split up" into the appropriate
- // bitfields above.
- for (unsigned i = 0; i != 4; ++i)
- Data[Offset + i] |= uint8_t((Value >> ((4 - i - 1)*8)) & 0xff);
- }
-
+ ELFPPCAsmBackend(const Target &T, uint8_t OSABI) :
+ PPCAsmBackend(T), OSABI(OSABI) { }
+
+
MCObjectWriter *createObjectWriter(raw_ostream &OS) const {
bool is64 = getPointerSize() == 8;
- return createELFObjectWriter(new PPCELFObjectWriter(
- /*Is64Bit=*/is64,
- OSType,
- is64 ? ELF::EM_PPC64 : ELF::EM_PPC,
- /*addend*/ true, /*isLittleEndian*/ false),
- OS, /*IsLittleEndian=*/false);
+ return createPPCELFObjectWriter(OS, is64, OSABI);
}
-
+
virtual bool doesSectionRequireSymbols(const MCSection &Section) const {
return false;
}
-MCAsmBackend *llvm::createPPCAsmBackend(const Target &T, StringRef TT) {
+MCAsmBackend *llvm::createPPCAsmBackend(const Target &T, StringRef TT, StringRef CPU) {
if (Triple(TT).isOSDarwin())
return new DarwinPPCAsmBackend(T);
- return new ELFPPCAsmBackend(T, Triple(TT).getOS());
+ uint8_t OSABI = MCELFObjectTargetWriter::getOSABI(Triple(TT).getOS());
+ return new ELFPPCAsmBackend(T, OSABI);
}
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