FK_PCRel_2, ///< A two-byte pc relative fixup.
FK_PCRel_4, ///< A four-byte pc relative fixup.
FK_PCRel_8, ///< A eight-byte pc relative fixup.
+ FK_GPRel_1, ///< A one-byte gp relative fixup.
+ FK_GPRel_2, ///< A two-byte gp relative fixup.
+ FK_GPRel_4, ///< A four-byte gp relative fixup.
+ FK_GPRel_8, ///< A eight-byte gp relative fixup.
FirstTargetFixupKind = 128,
unsigned PointerSize);
virtual void EmitDwarfAdvanceFrameAddr(const MCSymbol *LastLabel,
const MCSymbol *Label);
+ virtual void EmitGPRel32Value(const MCExpr *Value);
virtual void Finish();
/// @}
R_ARM_THM_TLS_DESCSEQ32 = 0x82
};
+// Mips Specific e_flags
+enum {
+ EF_MIPS_NOREORDER = 0x00000001, // Don't reorder instructions
+ EF_MIPS_PIC = 0x00000002, // Position independent code
+ EF_MIPS_CPIC = 0x00000004, // Call object with Position independent code
+ EF_MIPS_ARCH_1 = 0x00000000, // MIPS1 instruction set
+ EF_MIPS_ARCH_2 = 0x10000000, // MIPS2 instruction set
+ EF_MIPS_ARCH_3 = 0x20000000, // MIPS3 instruction set
+ EF_MIPS_ARCH_4 = 0x30000000, // MIPS4 instruction set
+ EF_MIPS_ARCH_5 = 0x40000000, // MIPS5 instruction set
+ EF_MIPS_ARCH_32 = 0x60000000, // MIPS32 instruction set
+ EF_MIPS_ARCH_32R2 = 0x70000000, // mips32r2
+ EF_MIPS_ARCH = 0xf0000000 // Mask for applying EF_MIPS_ARCH_ variant
+};
+
// ELF Relocation types for Mips
+// .
enum {
R_MIPS_NONE = 0,
R_MIPS_16 = 1,
MipsELFObjectWriter::~MipsELFObjectWriter() {}
+// FIXME: get the real EABI Version from the Triple.
+void MipsELFObjectWriter::WriteEFlags() {
+ Write32(ELF::EF_MIPS_NOREORDER |
+ ELF::EF_MIPS_ARCH_32R2);
+}
+
unsigned MipsELFObjectWriter::GetRelocType(const MCValue &Target,
const MCFixup &Fixup,
bool IsPCRel,
case FK_Data_4:
Type = ELF::R_MIPS_32;
break;
+ case FK_GPRel_4:
+ Type = ELF::R_MIPS_GPREL32;
+ break;
case Mips::fixup_Mips_GPREL16:
Type = ELF::R_MIPS_GPREL16;
break;
bool IsLittleEndian);
virtual ~MipsELFObjectWriter();
+ virtual void WriteEFlags();
+
protected:
virtual unsigned GetRelocType(const MCValue &Target, const MCFixup &Fixup,
bool IsPCRel, bool IsRelocWithSymbol,
const MCFixupKindInfo &
MCAsmBackend::getFixupKindInfo(MCFixupKind Kind) const {
static const MCFixupKindInfo Builtins[] = {
- { "FK_Data_1", 0, 8, 0 },
- { "FK_Data_2", 0, 16, 0 },
- { "FK_Data_4", 0, 32, 0 },
- { "FK_Data_8", 0, 64, 0 },
- { "FK_PCRel_1", 0, 8, MCFixupKindInfo::FKF_IsPCRel },
+ { "FK_Data_1", 0, 8, 0 },
+ { "FK_Data_2", 0, 16, 0 },
+ { "FK_Data_4", 0, 32, 0 },
+ { "FK_Data_8", 0, 64, 0 },
+ { "FK_PCRel_1", 0, 8, MCFixupKindInfo::FKF_IsPCRel },
{ "FK_PCRel_2", 0, 16, MCFixupKindInfo::FKF_IsPCRel },
{ "FK_PCRel_4", 0, 32, MCFixupKindInfo::FKF_IsPCRel },
- { "FK_PCRel_8", 0, 64, MCFixupKindInfo::FKF_IsPCRel }
+ { "FK_PCRel_8", 0, 64, MCFixupKindInfo::FKF_IsPCRel },
+ { "FK_GPRel_1", 0, 8, 0 },
+ { "FK_GPRel_2", 0, 16, 0 },
+ { "FK_GPRel_4", 0, 32, 0 },
+ { "FK_GPRel_8", 0, 64, 0 }
};
assert((size_t)Kind <= sizeof(Builtins) / sizeof(Builtins[0]) &&
EmitFill(Res, Value, 0);
}
+// Associate GPRel32 fixup with data and resize data area
+void MCObjectStreamer::EmitGPRel32Value(const MCExpr *Value) {
+ MCDataFragment *DF = getOrCreateDataFragment();
+
+ DF->addFixup(MCFixup::Create(DF->getContents().size(),
+ Value,
+ FK_GPRel_4));
+ DF->getContents().resize(DF->getContents().size() + 4, 0);
+}
+
void MCObjectStreamer::Finish() {
// Dump out the dwarf file & directory tables and line tables.
if (getContext().hasDwarfFiles())
switch (Kind) {
default:
break;
+ case FK_GPRel_4:
case FK_Data_4:
Value &= 0xffffffff;
break;
case Mips::fixup_Mips_PC16:
Value &= 0x0000ffff;
break;
+ case Mips::fixup_Mips_HI16:
+ Value >>= 16;
+ break;
}
return Value;
llvm_unreachable("Unknown fixup kind!");
case Mips::fixup_Mips_GOT16: // This will be fixed up at link time
break;
+ case FK_GPRel_4:
case FK_Data_4:
case Mips::fixup_Mips_26:
case Mips::fixup_Mips_LO16:
case Mips::fixup_Mips_PC16:
+ case Mips::fixup_Mips_HI16:
// For each byte of the fragment that the fixup touches, mask i
// the fixup value. The Value has been "split up" into the appr
// bitfields above.
for (unsigned i = 0; i != 4; ++i) // FIXME - Need to support 2 and 8 bytes
- Data[Offset + i] |= uint8_t((Value >> (i * 8)) & 0xff);
+ Data[Offset + i] += uint8_t((Value >> (i * 8)) & 0xff);
break;
}
}