//===----------------------------------------------------------------------===//
#include "InstPrinter/MipsInstPrinter.h"
+#include "MipsELFStreamer.h"
#include "MipsMCTargetDesc.h"
#include "MipsTargetObjectFile.h"
#include "MipsTargetStreamer.h"
#include "llvm/MC/MCContext.h"
-#include "llvm/MC/MCELF.h"
#include "llvm/MC/MCSectionELF.h"
#include "llvm/MC/MCSubtargetInfo.h"
-#include "llvm/MC/MCSymbol.h"
+#include "llvm/MC/MCSymbolELF.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ELF.h"
#include "llvm/Support/ErrorHandling.h"
using namespace llvm;
-// Pin vtable to this file.
-void MipsTargetStreamer::anchor() {}
-
-MipsTargetStreamer::MipsTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
+MipsTargetStreamer::MipsTargetStreamer(MCStreamer &S)
+ : MCTargetStreamer(S), ModuleDirectiveAllowed(true) {
+ GPRInfoSet = FPRInfoSet = FrameInfoSet = false;
+}
+void MipsTargetStreamer::emitDirectiveSetMicroMips() {}
+void MipsTargetStreamer::emitDirectiveSetNoMicroMips() {}
+void MipsTargetStreamer::emitDirectiveSetMips16() {}
+void MipsTargetStreamer::emitDirectiveSetNoMips16() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetReorder() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetNoReorder() {}
+void MipsTargetStreamer::emitDirectiveSetMacro() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetNoMacro() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetMsa() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetNoMsa() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetAt() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetAtWithArg(unsigned RegNo) {
+ forbidModuleDirective();
+}
+void MipsTargetStreamer::emitDirectiveSetNoAt() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveEnd(StringRef Name) {}
+void MipsTargetStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {}
+void MipsTargetStreamer::emitDirectiveAbiCalls() {}
+void MipsTargetStreamer::emitDirectiveNaN2008() {}
+void MipsTargetStreamer::emitDirectiveNaNLegacy() {}
+void MipsTargetStreamer::emitDirectiveOptionPic0() {}
+void MipsTargetStreamer::emitDirectiveOptionPic2() {}
+void MipsTargetStreamer::emitDirectiveInsn() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitFrame(unsigned StackReg, unsigned StackSize,
+ unsigned ReturnReg) {}
+void MipsTargetStreamer::emitMask(unsigned CPUBitmask, int CPUTopSavedRegOff) {}
+void MipsTargetStreamer::emitFMask(unsigned FPUBitmask, int FPUTopSavedRegOff) {
+}
+void MipsTargetStreamer::emitDirectiveSetArch(StringRef Arch) {
+ forbidModuleDirective();
+}
+void MipsTargetStreamer::emitDirectiveSetMips0() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetMips1() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetMips2() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetMips3() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetMips4() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetMips5() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetMips32() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetMips32R2() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetMips32R3() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetMips32R5() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetMips32R6() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetMips64() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetMips64R2() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetMips64R3() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetMips64R5() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetMips64R6() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetPop() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetPush() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetSoftFloat() {
+ forbidModuleDirective();
+}
+void MipsTargetStreamer::emitDirectiveSetHardFloat() {
+ forbidModuleDirective();
+}
+void MipsTargetStreamer::emitDirectiveSetDsp() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetNoDsp() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveCpLoad(unsigned RegNo) {}
+void MipsTargetStreamer::emitDirectiveCpRestore(
+ SmallVector<MCInst, 3> &StoreInsts, int Offset) {
+ forbidModuleDirective();
+}
+void MipsTargetStreamer::emitDirectiveCpsetup(unsigned RegNo, int RegOrOffset,
+ const MCSymbol &Sym, bool IsReg) {
+}
+void MipsTargetStreamer::emitDirectiveCpreturn(unsigned SaveLocation,
+ bool SaveLocationIsRegister) {}
+
+void MipsTargetStreamer::emitDirectiveModuleFP() {}
+
+void MipsTargetStreamer::emitDirectiveModuleOddSPReg() {
+ if (!ABIFlagsSection.OddSPReg && !ABIFlagsSection.Is32BitABI)
+ report_fatal_error("+nooddspreg is only valid for O32");
+}
+void MipsTargetStreamer::emitDirectiveModuleSoftFloat() {}
+void MipsTargetStreamer::emitDirectiveModuleHardFloat() {}
+void MipsTargetStreamer::emitDirectiveSetFp(
+ MipsABIFlagsSection::FpABIKind Value) {
+ forbidModuleDirective();
+}
+void MipsTargetStreamer::emitDirectiveSetOddSPReg() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetNoOddSPReg() {
+ forbidModuleDirective();
+}
MipsTargetAsmStreamer::MipsTargetAsmStreamer(MCStreamer &S,
formatted_raw_ostream &OS)
void MipsTargetAsmStreamer::emitDirectiveSetMicroMips() {
OS << "\t.set\tmicromips\n";
+ forbidModuleDirective();
}
void MipsTargetAsmStreamer::emitDirectiveSetNoMicroMips() {
OS << "\t.set\tnomicromips\n";
+ forbidModuleDirective();
}
void MipsTargetAsmStreamer::emitDirectiveSetMips16() {
OS << "\t.set\tmips16\n";
+ forbidModuleDirective();
}
void MipsTargetAsmStreamer::emitDirectiveSetNoMips16() {
OS << "\t.set\tnomips16\n";
+ MipsTargetStreamer::emitDirectiveSetNoMips16();
}
void MipsTargetAsmStreamer::emitDirectiveSetReorder() {
OS << "\t.set\treorder\n";
+ MipsTargetStreamer::emitDirectiveSetReorder();
}
void MipsTargetAsmStreamer::emitDirectiveSetNoReorder() {
OS << "\t.set\tnoreorder\n";
+ forbidModuleDirective();
}
void MipsTargetAsmStreamer::emitDirectiveSetMacro() {
OS << "\t.set\tmacro\n";
+ MipsTargetStreamer::emitDirectiveSetMacro();
}
void MipsTargetAsmStreamer::emitDirectiveSetNoMacro() {
OS << "\t.set\tnomacro\n";
+ MipsTargetStreamer::emitDirectiveSetNoMacro();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetMsa() {
+ OS << "\t.set\tmsa\n";
+ MipsTargetStreamer::emitDirectiveSetMsa();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetNoMsa() {
+ OS << "\t.set\tnomsa\n";
+ MipsTargetStreamer::emitDirectiveSetNoMsa();
}
void MipsTargetAsmStreamer::emitDirectiveSetAt() {
OS << "\t.set\tat\n";
+ MipsTargetStreamer::emitDirectiveSetAt();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetAtWithArg(unsigned RegNo) {
+ OS << "\t.set\tat=$" << Twine(RegNo) << "\n";
+ MipsTargetStreamer::emitDirectiveSetAtWithArg(RegNo);
}
void MipsTargetAsmStreamer::emitDirectiveSetNoAt() {
OS << "\t.set\tnoat\n";
+ MipsTargetStreamer::emitDirectiveSetNoAt();
}
void MipsTargetAsmStreamer::emitDirectiveEnd(StringRef Name) {
OS << "\t.option\tpic2\n";
}
+void MipsTargetAsmStreamer::emitDirectiveInsn() {
+ MipsTargetStreamer::emitDirectiveInsn();
+ OS << "\t.insn\n";
+}
+
void MipsTargetAsmStreamer::emitFrame(unsigned StackReg, unsigned StackSize,
unsigned ReturnReg) {
OS << "\t.frame\t$"
<< StringRef(MipsInstPrinter::getRegisterName(ReturnReg)).lower() << '\n';
}
+void MipsTargetAsmStreamer::emitDirectiveSetArch(StringRef Arch) {
+ OS << "\t.set arch=" << Arch << "\n";
+ MipsTargetStreamer::emitDirectiveSetArch(Arch);
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetMips0() {
+ OS << "\t.set\tmips0\n";
+ MipsTargetStreamer::emitDirectiveSetMips0();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetMips1() {
+ OS << "\t.set\tmips1\n";
+ MipsTargetStreamer::emitDirectiveSetMips1();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetMips2() {
+ OS << "\t.set\tmips2\n";
+ MipsTargetStreamer::emitDirectiveSetMips2();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetMips3() {
+ OS << "\t.set\tmips3\n";
+ MipsTargetStreamer::emitDirectiveSetMips3();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetMips4() {
+ OS << "\t.set\tmips4\n";
+ MipsTargetStreamer::emitDirectiveSetMips4();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetMips5() {
+ OS << "\t.set\tmips5\n";
+ MipsTargetStreamer::emitDirectiveSetMips5();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetMips32() {
+ OS << "\t.set\tmips32\n";
+ MipsTargetStreamer::emitDirectiveSetMips32();
+}
+
void MipsTargetAsmStreamer::emitDirectiveSetMips32R2() {
OS << "\t.set\tmips32r2\n";
+ MipsTargetStreamer::emitDirectiveSetMips32R2();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetMips32R3() {
+ OS << "\t.set\tmips32r3\n";
+ MipsTargetStreamer::emitDirectiveSetMips32R3();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetMips32R5() {
+ OS << "\t.set\tmips32r5\n";
+ MipsTargetStreamer::emitDirectiveSetMips32R5();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetMips32R6() {
+ OS << "\t.set\tmips32r6\n";
+ MipsTargetStreamer::emitDirectiveSetMips32R6();
}
void MipsTargetAsmStreamer::emitDirectiveSetMips64() {
OS << "\t.set\tmips64\n";
+ MipsTargetStreamer::emitDirectiveSetMips64();
}
void MipsTargetAsmStreamer::emitDirectiveSetMips64R2() {
OS << "\t.set\tmips64r2\n";
+ MipsTargetStreamer::emitDirectiveSetMips64R2();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetMips64R3() {
+ OS << "\t.set\tmips64r3\n";
+ MipsTargetStreamer::emitDirectiveSetMips64R3();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetMips64R5() {
+ OS << "\t.set\tmips64r5\n";
+ MipsTargetStreamer::emitDirectiveSetMips64R5();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetMips64R6() {
+ OS << "\t.set\tmips64r6\n";
+ MipsTargetStreamer::emitDirectiveSetMips64R6();
}
void MipsTargetAsmStreamer::emitDirectiveSetDsp() {
OS << "\t.set\tdsp\n";
+ MipsTargetStreamer::emitDirectiveSetDsp();
}
+
+void MipsTargetAsmStreamer::emitDirectiveSetNoDsp() {
+ OS << "\t.set\tnodsp\n";
+ MipsTargetStreamer::emitDirectiveSetNoDsp();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetPop() {
+ OS << "\t.set\tpop\n";
+ MipsTargetStreamer::emitDirectiveSetPop();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetPush() {
+ OS << "\t.set\tpush\n";
+ MipsTargetStreamer::emitDirectiveSetPush();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetSoftFloat() {
+ OS << "\t.set\tsoftfloat\n";
+ MipsTargetStreamer::emitDirectiveSetSoftFloat();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetHardFloat() {
+ OS << "\t.set\thardfloat\n";
+ MipsTargetStreamer::emitDirectiveSetHardFloat();
+}
+
// Print a 32 bit hex number with all numbers.
static void printHex32(unsigned Value, raw_ostream &OS) {
OS << "0x";
for (int i = 7; i >= 0; i--)
- OS.write_hex((Value & (0xF << (i*4))) >> (i*4));
+ OS.write_hex((Value & (0xF << (i * 4))) >> (i * 4));
}
void MipsTargetAsmStreamer::emitMask(unsigned CPUBitmask,
OS << "," << FPUTopSavedRegOff << '\n';
}
-void MipsTargetAsmStreamer::emitDirectiveCpload(unsigned RegNo) {
+void MipsTargetAsmStreamer::emitDirectiveCpLoad(unsigned RegNo) {
OS << "\t.cpload\t$"
<< StringRef(MipsInstPrinter::getRegisterName(RegNo)).lower() << "\n";
+ forbidModuleDirective();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveCpRestore(
+ SmallVector<MCInst, 3> &StoreInsts, int Offset) {
+ MipsTargetStreamer::emitDirectiveCpRestore(StoreInsts, Offset);
+ OS << "\t.cprestore\t" << Offset << "\n";
}
void MipsTargetAsmStreamer::emitDirectiveCpsetup(unsigned RegNo,
OS << ", ";
- OS << Sym.getName() << "\n";
+ OS << Sym.getName();
+ forbidModuleDirective();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveCpreturn(unsigned SaveLocation,
+ bool SaveLocationIsRegister) {
+ OS << "\t.cpreturn";
+ forbidModuleDirective();
+}
+
+void MipsTargetAsmStreamer::emitDirectiveModuleFP() {
+ OS << "\t.module\tfp=";
+ OS << ABIFlagsSection.getFpABIString(ABIFlagsSection.getFpABI()) << "\n";
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetFp(
+ MipsABIFlagsSection::FpABIKind Value) {
+ MipsTargetStreamer::emitDirectiveSetFp(Value);
+
+ OS << "\t.set\tfp=";
+ OS << ABIFlagsSection.getFpABIString(Value) << "\n";
+}
+
+void MipsTargetAsmStreamer::emitDirectiveModuleOddSPReg() {
+ MipsTargetStreamer::emitDirectiveModuleOddSPReg();
+
+ OS << "\t.module\t" << (ABIFlagsSection.OddSPReg ? "" : "no") << "oddspreg\n";
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetOddSPReg() {
+ MipsTargetStreamer::emitDirectiveSetOddSPReg();
+ OS << "\t.set\toddspreg\n";
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetNoOddSPReg() {
+ MipsTargetStreamer::emitDirectiveSetNoOddSPReg();
+ OS << "\t.set\tnooddspreg\n";
+}
+
+void MipsTargetAsmStreamer::emitDirectiveModuleSoftFloat() {
+ OS << "\t.module\tsoftfloat\n";
+}
+
+void MipsTargetAsmStreamer::emitDirectiveModuleHardFloat() {
+ OS << "\t.module\thardfloat\n";
}
// This part is for ELF object output.
const MCSubtargetInfo &STI)
: MipsTargetStreamer(S), MicroMipsEnabled(false), STI(STI) {
MCAssembler &MCA = getStreamer().getAssembler();
- uint64_t Features = STI.getFeatureBits();
- Triple T(STI.getTargetTriple());
- Pic = (MCA.getContext().getObjectFileInfo()->getRelocM() == Reloc::PIC_)
- ? true
- : false;
-
- // Update e_header flags
- unsigned EFlags = 0;
+ Pic = MCA.getContext().getObjectFileInfo()->getRelocM() == Reloc::PIC_;
+
+ const FeatureBitset &Features = STI.getFeatureBits();
+
+ // Set the header flags that we can in the constructor.
+ // FIXME: This is a fairly terrible hack. We set the rest
+ // of these in the destructor. The problem here is two-fold:
+ //
+ // a: Some of the eflags can be set/reset by directives.
+ // b: There aren't any usage paths that initialize the ABI
+ // pointer until after we initialize either an assembler
+ // or the target machine.
+ // We can fix this by making the target streamer construct
+ // the ABI, but this is fraught with wide ranging dependency
+ // issues as well.
+ unsigned EFlags = MCA.getELFHeaderEFlags();
// Architecture
- if (Features & Mips::FeatureMips64r2)
+ if (Features[Mips::FeatureMips64r6])
+ EFlags |= ELF::EF_MIPS_ARCH_64R6;
+ else if (Features[Mips::FeatureMips64r2] ||
+ Features[Mips::FeatureMips64r3] ||
+ Features[Mips::FeatureMips64r5])
EFlags |= ELF::EF_MIPS_ARCH_64R2;
- else if (Features & Mips::FeatureMips64)
+ else if (Features[Mips::FeatureMips64])
EFlags |= ELF::EF_MIPS_ARCH_64;
- else if (Features & Mips::FeatureMips4)
+ else if (Features[Mips::FeatureMips5])
+ EFlags |= ELF::EF_MIPS_ARCH_5;
+ else if (Features[Mips::FeatureMips4])
EFlags |= ELF::EF_MIPS_ARCH_4;
- else if (Features & Mips::FeatureMips32r2)
+ else if (Features[Mips::FeatureMips3])
+ EFlags |= ELF::EF_MIPS_ARCH_3;
+ else if (Features[Mips::FeatureMips32r6])
+ EFlags |= ELF::EF_MIPS_ARCH_32R6;
+ else if (Features[Mips::FeatureMips32r2] ||
+ Features[Mips::FeatureMips32r3] ||
+ Features[Mips::FeatureMips32r5])
EFlags |= ELF::EF_MIPS_ARCH_32R2;
- else if (Features & Mips::FeatureMips32)
+ else if (Features[Mips::FeatureMips32])
EFlags |= ELF::EF_MIPS_ARCH_32;
-
- if (T.isArch64Bit()) {
- if (Features & Mips::FeatureN32)
- EFlags |= ELF::EF_MIPS_ABI2;
- else if (Features & Mips::FeatureO32) {
- EFlags |= ELF::EF_MIPS_ABI_O32;
- EFlags |= ELF::EF_MIPS_32BITMODE; /* Compatibility Mode */
- }
- // No need to set any bit for N64 which is the default ABI at the moment
- // for 64-bit Mips architectures.
- } else {
- if (Features & Mips::FeatureMips64r2 || Features & Mips::FeatureMips64)
- EFlags |= ELF::EF_MIPS_32BITMODE;
-
- // ABI
- EFlags |= ELF::EF_MIPS_ABI_O32;
- }
+ else if (Features[Mips::FeatureMips2])
+ EFlags |= ELF::EF_MIPS_ARCH_2;
+ else
+ EFlags |= ELF::EF_MIPS_ARCH_1;
// Other options.
- if (Features & Mips::FeatureNaN2008)
+ if (Features[Mips::FeatureNaN2008])
EFlags |= ELF::EF_MIPS_NAN2008;
+ // -mabicalls and -mplt are not implemented but we should act as if they were
+ // given.
+ EFlags |= ELF::EF_MIPS_CPIC;
+
MCA.setELFHeaderEFlags(EFlags);
}
-void MipsTargetELFStreamer::emitLabel(MCSymbol *Symbol) {
+void MipsTargetELFStreamer::emitLabel(MCSymbol *S) {
+ auto *Symbol = cast<MCSymbolELF>(S);
if (!isMicroMipsEnabled())
return;
- MCSymbolData &Data = getStreamer().getOrCreateSymbolData(Symbol);
- uint8_t Type = MCELF::GetType(Data);
+ getStreamer().getAssembler().registerSymbol(*Symbol);
+ uint8_t Type = Symbol->getType();
if (Type != ELF::STT_FUNC)
return;
- // The "other" values are stored in the last 6 bits of the second byte
- // The traditional defines for STO values assume the full byte and thus
- // the shift to pack it.
- MCELF::setOther(Data, ELF::STO_MIPS_MICROMIPS >> 2);
+ Symbol->setOther(ELF::STO_MIPS_MICROMIPS);
}
void MipsTargetELFStreamer::finish() {
MCAssembler &MCA = getStreamer().getAssembler();
- MCContext &Context = MCA.getContext();
- MCStreamer &OS = getStreamer();
- Triple T(STI.getTargetTriple());
- uint64_t Features = STI.getFeatureBits();
-
- if (T.isArch64Bit() && (Features & Mips::FeatureN64)) {
- const MCSectionELF *Sec = Context.getELFSection(
- ".MIPS.options", ELF::SHT_MIPS_OPTIONS,
- ELF::SHF_ALLOC | ELF::SHF_MIPS_NOSTRIP, SectionKind::getMetadata());
- OS.SwitchSection(Sec);
-
- OS.EmitIntValue(1, 1); // kind
- OS.EmitIntValue(40, 1); // size
- OS.EmitIntValue(0, 2); // section
- OS.EmitIntValue(0, 4); // info
- OS.EmitIntValue(0, 4); // ri_gprmask
- OS.EmitIntValue(0, 4); // pad
- OS.EmitIntValue(0, 4); // ri_cpr[0]mask
- OS.EmitIntValue(0, 4); // ri_cpr[1]mask
- OS.EmitIntValue(0, 4); // ri_cpr[2]mask
- OS.EmitIntValue(0, 4); // ri_cpr[3]mask
- OS.EmitIntValue(0, 8); // ri_gp_value
- } else {
- const MCSectionELF *Sec =
- Context.getELFSection(".reginfo", ELF::SHT_MIPS_REGINFO, ELF::SHF_ALLOC,
- SectionKind::getMetadata());
- OS.SwitchSection(Sec);
-
- OS.EmitIntValue(0, 4); // ri_gprmask
- OS.EmitIntValue(0, 4); // ri_cpr[0]mask
- OS.EmitIntValue(0, 4); // ri_cpr[1]mask
- OS.EmitIntValue(0, 4); // ri_cpr[2]mask
- OS.EmitIntValue(0, 4); // ri_cpr[3]mask
- OS.EmitIntValue(0, 4); // ri_gp_value
- }
+ const MCObjectFileInfo &OFI = *MCA.getContext().getObjectFileInfo();
+
+ // .bss, .text and .data are always at least 16-byte aligned.
+ MCSection &TextSection = *OFI.getTextSection();
+ MCA.registerSection(TextSection);
+ MCSection &DataSection = *OFI.getDataSection();
+ MCA.registerSection(DataSection);
+ MCSection &BSSSection = *OFI.getBSSSection();
+ MCA.registerSection(BSSSection);
+
+ TextSection.setAlignment(std::max(16u, TextSection.getAlignment()));
+ DataSection.setAlignment(std::max(16u, DataSection.getAlignment()));
+ BSSSection.setAlignment(std::max(16u, BSSSection.getAlignment()));
+
+ const FeatureBitset &Features = STI.getFeatureBits();
+
+ // Update e_header flags. See the FIXME and comment above in
+ // the constructor for a full rundown on this.
+ unsigned EFlags = MCA.getELFHeaderEFlags();
+
+ // ABI
+ // N64 does not require any ABI bits.
+ if (getABI().IsO32())
+ EFlags |= ELF::EF_MIPS_ABI_O32;
+ else if (getABI().IsN32())
+ EFlags |= ELF::EF_MIPS_ABI2;
+
+ if (Features[Mips::FeatureGP64Bit]) {
+ if (getABI().IsO32())
+ EFlags |= ELF::EF_MIPS_32BITMODE; /* Compatibility Mode */
+ } else if (Features[Mips::FeatureMips64r2] || Features[Mips::FeatureMips64])
+ EFlags |= ELF::EF_MIPS_32BITMODE;
+
+ // If we've set the cpic eflag and we're n64, go ahead and set the pic
+ // one as well.
+ if (EFlags & ELF::EF_MIPS_CPIC && getABI().IsN64())
+ EFlags |= ELF::EF_MIPS_PIC;
+
+ MCA.setELFHeaderEFlags(EFlags);
+
+ // Emit all the option records.
+ // At the moment we are only emitting .Mips.options (ODK_REGINFO) and
+ // .reginfo.
+ MipsELFStreamer &MEF = static_cast<MipsELFStreamer &>(Streamer);
+ MEF.EmitMipsOptionRecords();
+
+ emitMipsAbiFlags();
}
-void MipsTargetELFStreamer::emitAssignment(MCSymbol *Symbol,
- const MCExpr *Value) {
+void MipsTargetELFStreamer::emitAssignment(MCSymbol *S, const MCExpr *Value) {
+ auto *Symbol = cast<MCSymbolELF>(S);
// If on rhs is micromips symbol then mark Symbol as microMips.
if (Value->getKind() != MCExpr::SymbolRef)
return;
- const MCSymbol &RhsSym =
- static_cast<const MCSymbolRefExpr *>(Value)->getSymbol();
- MCSymbolData &Data = getStreamer().getOrCreateSymbolData(&RhsSym);
- uint8_t Type = MCELF::GetType(Data);
- if ((Type != ELF::STT_FUNC)
- || !(MCELF::getOther(Data) & (ELF::STO_MIPS_MICROMIPS >> 2)))
+ const auto &RhsSym = cast<MCSymbolELF>(
+ static_cast<const MCSymbolRefExpr *>(Value)->getSymbol());
+
+ if (!(RhsSym.getOther() & ELF::STO_MIPS_MICROMIPS))
return;
- MCSymbolData &SymbolData = getStreamer().getOrCreateSymbolData(Symbol);
- // The "other" values are stored in the last 6 bits of the second byte.
- // The traditional defines for STO values assume the full byte and thus
- // the shift to pack it.
- MCELF::setOther(SymbolData, ELF::STO_MIPS_MICROMIPS >> 2);
+ Symbol->setOther(ELF::STO_MIPS_MICROMIPS);
}
MCELFStreamer &MipsTargetELFStreamer::getStreamer() {
unsigned Flags = MCA.getELFHeaderEFlags();
Flags |= ELF::EF_MIPS_MICROMIPS;
MCA.setELFHeaderEFlags(Flags);
+ forbidModuleDirective();
}
void MipsTargetELFStreamer::emitDirectiveSetNoMicroMips() {
MicroMipsEnabled = false;
+ forbidModuleDirective();
}
void MipsTargetELFStreamer::emitDirectiveSetMips16() {
unsigned Flags = MCA.getELFHeaderEFlags();
Flags |= ELF::EF_MIPS_ARCH_ASE_M16;
MCA.setELFHeaderEFlags(Flags);
-}
-
-void MipsTargetELFStreamer::emitDirectiveSetNoMips16() {
- // FIXME: implement.
-}
-
-void MipsTargetELFStreamer::emitDirectiveSetReorder() {
- // FIXME: implement.
+ forbidModuleDirective();
}
void MipsTargetELFStreamer::emitDirectiveSetNoReorder() {
unsigned Flags = MCA.getELFHeaderEFlags();
Flags |= ELF::EF_MIPS_NOREORDER;
MCA.setELFHeaderEFlags(Flags);
+ forbidModuleDirective();
}
-void MipsTargetELFStreamer::emitDirectiveSetMacro() {
- // FIXME: implement.
-}
+void MipsTargetELFStreamer::emitDirectiveEnd(StringRef Name) {
+ MCAssembler &MCA = getStreamer().getAssembler();
+ MCContext &Context = MCA.getContext();
+ MCStreamer &OS = getStreamer();
-void MipsTargetELFStreamer::emitDirectiveSetNoMacro() {
- // FIXME: implement.
-}
+ MCSectionELF *Sec = Context.getELFSection(".pdr", ELF::SHT_PROGBITS,
+ ELF::SHF_ALLOC | ELF::SHT_REL);
-void MipsTargetELFStreamer::emitDirectiveSetAt() {
- // FIXME: implement.
-}
+ MCSymbol *Sym = Context.getOrCreateSymbol(Name);
+ const MCSymbolRefExpr *ExprRef =
+ MCSymbolRefExpr::create(Sym, MCSymbolRefExpr::VK_None, Context);
-void MipsTargetELFStreamer::emitDirectiveSetNoAt() {
- // FIXME: implement.
-}
+ MCA.registerSection(*Sec);
+ Sec->setAlignment(4);
-void MipsTargetELFStreamer::emitDirectiveEnd(StringRef Name) {
- // FIXME: implement.
+ OS.PushSection();
+
+ OS.SwitchSection(Sec);
+
+ OS.EmitValueImpl(ExprRef, 4);
+
+ OS.EmitIntValue(GPRInfoSet ? GPRBitMask : 0, 4); // reg_mask
+ OS.EmitIntValue(GPRInfoSet ? GPROffset : 0, 4); // reg_offset
+
+ OS.EmitIntValue(FPRInfoSet ? FPRBitMask : 0, 4); // fpreg_mask
+ OS.EmitIntValue(FPRInfoSet ? FPROffset : 0, 4); // fpreg_offset
+
+ OS.EmitIntValue(FrameInfoSet ? FrameOffset : 0, 4); // frame_offset
+ OS.EmitIntValue(FrameInfoSet ? FrameReg : 0, 4); // frame_reg
+ OS.EmitIntValue(FrameInfoSet ? ReturnReg : 0, 4); // return_reg
+
+ // The .end directive marks the end of a procedure. Invalidate
+ // the information gathered up until this point.
+ GPRInfoSet = FPRInfoSet = FrameInfoSet = false;
+
+ OS.PopSection();
+
+ // .end also implicitly sets the size.
+ MCSymbol *CurPCSym = Context.createTempSymbol();
+ OS.EmitLabel(CurPCSym);
+ const MCExpr *Size = MCBinaryExpr::createSub(
+ MCSymbolRefExpr::create(CurPCSym, MCSymbolRefExpr::VK_None, Context),
+ ExprRef, Context);
+ int64_t AbsSize;
+ if (!Size->evaluateAsAbsolute(AbsSize, MCA))
+ llvm_unreachable("Function size must be evaluatable as absolute");
+ Size = MCConstantExpr::create(AbsSize, Context);
+ static_cast<MCSymbolELF *>(Sym)->setSize(Size);
}
void MipsTargetELFStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {
- // FIXME: implement.
+ GPRInfoSet = FPRInfoSet = FrameInfoSet = false;
+
+ // .ent also acts like an implicit '.type symbol, STT_FUNC'
+ static_cast<const MCSymbolELF &>(Symbol).setType(ELF::STT_FUNC);
}
void MipsTargetELFStreamer::emitDirectiveAbiCalls() {
MCA.setELFHeaderEFlags(Flags);
}
+void MipsTargetELFStreamer::emitDirectiveInsn() {
+ MipsTargetStreamer::emitDirectiveInsn();
+ MipsELFStreamer &MEF = static_cast<MipsELFStreamer &>(Streamer);
+ MEF.createPendingLabelRelocs();
+}
+
void MipsTargetELFStreamer::emitFrame(unsigned StackReg, unsigned StackSize,
- unsigned ReturnReg) {
- // FIXME: implement.
+ unsigned ReturnReg_) {
+ MCContext &Context = getStreamer().getAssembler().getContext();
+ const MCRegisterInfo *RegInfo = Context.getRegisterInfo();
+
+ FrameInfoSet = true;
+ FrameReg = RegInfo->getEncodingValue(StackReg);
+ FrameOffset = StackSize;
+ ReturnReg = RegInfo->getEncodingValue(ReturnReg_);
}
void MipsTargetELFStreamer::emitMask(unsigned CPUBitmask,
int CPUTopSavedRegOff) {
- // FIXME: implement.
+ GPRInfoSet = true;
+ GPRBitMask = CPUBitmask;
+ GPROffset = CPUTopSavedRegOff;
}
void MipsTargetELFStreamer::emitFMask(unsigned FPUBitmask,
int FPUTopSavedRegOff) {
- // FIXME: implement.
+ FPRInfoSet = true;
+ FPRBitMask = FPUBitmask;
+ FPROffset = FPUTopSavedRegOff;
}
-void MipsTargetELFStreamer::emitDirectiveSetMips32R2() {
- // No action required for ELF output.
-}
-
-void MipsTargetELFStreamer::emitDirectiveSetMips64() {
- // No action required for ELF output.
-}
-
-void MipsTargetELFStreamer::emitDirectiveSetMips64R2() {
- // No action required for ELF output.
-}
-
-void MipsTargetELFStreamer::emitDirectiveSetDsp() {
- // No action required for ELF output.
-}
-
-void MipsTargetELFStreamer::emitDirectiveCpload(unsigned RegNo) {
+void MipsTargetELFStreamer::emitDirectiveCpLoad(unsigned RegNo) {
// .cpload $reg
// This directive expands to:
// lui $gp, %hi(_gp_disp)
// addui $gp, $gp, %lo(_gp_disp)
// addu $gp, $gp, $reg
// when support for position independent code is enabled.
- if (!Pic || (isN32() || isN64()))
+ if (!Pic || (getABI().IsN32() || getABI().IsN64()))
return;
// There's a GNU extension controlled by -mno-shared that allows
StringRef SymName("_gp_disp");
MCAssembler &MCA = getStreamer().getAssembler();
- MCSymbol *GP_Disp = MCA.getContext().GetOrCreateSymbol(SymName);
- MCA.getOrCreateSymbolData(*GP_Disp);
+ MCSymbol *GP_Disp = MCA.getContext().getOrCreateSymbol(SymName);
+ MCA.registerSymbol(*GP_Disp);
MCInst TmpInst;
TmpInst.setOpcode(Mips::LUi);
- TmpInst.addOperand(MCOperand::CreateReg(Mips::GP));
- const MCSymbolRefExpr *HiSym = MCSymbolRefExpr::Create(
+ TmpInst.addOperand(MCOperand::createReg(Mips::GP));
+ const MCSymbolRefExpr *HiSym = MCSymbolRefExpr::create(
"_gp_disp", MCSymbolRefExpr::VK_Mips_ABS_HI, MCA.getContext());
- TmpInst.addOperand(MCOperand::CreateExpr(HiSym));
+ TmpInst.addOperand(MCOperand::createExpr(HiSym));
getStreamer().EmitInstruction(TmpInst, STI);
TmpInst.clear();
TmpInst.setOpcode(Mips::ADDiu);
- TmpInst.addOperand(MCOperand::CreateReg(Mips::GP));
- TmpInst.addOperand(MCOperand::CreateReg(Mips::GP));
- const MCSymbolRefExpr *LoSym = MCSymbolRefExpr::Create(
+ TmpInst.addOperand(MCOperand::createReg(Mips::GP));
+ TmpInst.addOperand(MCOperand::createReg(Mips::GP));
+ const MCSymbolRefExpr *LoSym = MCSymbolRefExpr::create(
"_gp_disp", MCSymbolRefExpr::VK_Mips_ABS_LO, MCA.getContext());
- TmpInst.addOperand(MCOperand::CreateExpr(LoSym));
+ TmpInst.addOperand(MCOperand::createExpr(LoSym));
getStreamer().EmitInstruction(TmpInst, STI);
TmpInst.clear();
TmpInst.setOpcode(Mips::ADDu);
- TmpInst.addOperand(MCOperand::CreateReg(Mips::GP));
- TmpInst.addOperand(MCOperand::CreateReg(Mips::GP));
- TmpInst.addOperand(MCOperand::CreateReg(RegNo));
+ TmpInst.addOperand(MCOperand::createReg(Mips::GP));
+ TmpInst.addOperand(MCOperand::createReg(Mips::GP));
+ TmpInst.addOperand(MCOperand::createReg(RegNo));
getStreamer().EmitInstruction(TmpInst, STI);
+
+ forbidModuleDirective();
+}
+
+void MipsTargetELFStreamer::emitDirectiveCpRestore(
+ SmallVector<MCInst, 3> &StoreInsts, int Offset) {
+ MipsTargetStreamer::emitDirectiveCpRestore(StoreInsts, Offset);
+ // .cprestore offset
+ // When PIC mode is enabled and the O32 ABI is used, this directive expands
+ // to:
+ // sw $gp, offset($sp)
+ // and adds a corresponding LW after every JAL.
+
+ // Note that .cprestore is ignored if used with the N32 and N64 ABIs or if it
+ // is used in non-PIC mode.
+ if (!Pic || (getABI().IsN32() || getABI().IsN64()))
+ return;
+
+ for (const MCInst &Inst : StoreInsts)
+ getStreamer().EmitInstruction(Inst, STI);
}
void MipsTargetELFStreamer::emitDirectiveCpsetup(unsigned RegNo,
const MCSymbol &Sym,
bool IsReg) {
// Only N32 and N64 emit anything for .cpsetup iff PIC is set.
- if (!Pic || !(isN32() || isN64()))
+ if (!Pic || !(getABI().IsN32() || getABI().IsN64()))
return;
MCAssembler &MCA = getStreamer().getAssembler();
// Either store the old $gp in a register or on the stack
if (IsReg) {
// move $save, $gpreg
- Inst.setOpcode(Mips::DADDu);
- Inst.addOperand(MCOperand::CreateReg(RegOrOffset));
- Inst.addOperand(MCOperand::CreateReg(Mips::GP));
- Inst.addOperand(MCOperand::CreateReg(Mips::ZERO));
+ Inst.setOpcode(Mips::OR64);
+ Inst.addOperand(MCOperand::createReg(RegOrOffset));
+ Inst.addOperand(MCOperand::createReg(Mips::GP));
+ Inst.addOperand(MCOperand::createReg(Mips::ZERO));
} else {
// sd $gpreg, offset($sp)
Inst.setOpcode(Mips::SD);
- Inst.addOperand(MCOperand::CreateReg(Mips::GP));
- Inst.addOperand(MCOperand::CreateReg(Mips::SP));
- Inst.addOperand(MCOperand::CreateImm(RegOrOffset));
+ Inst.addOperand(MCOperand::createReg(Mips::GP));
+ Inst.addOperand(MCOperand::createReg(Mips::SP));
+ Inst.addOperand(MCOperand::createImm(RegOrOffset));
}
getStreamer().EmitInstruction(Inst, STI);
Inst.clear();
- const MCSymbolRefExpr *HiExpr = MCSymbolRefExpr::Create(
- Sym.getName(), MCSymbolRefExpr::VK_Mips_GPOFF_HI, MCA.getContext());
- const MCSymbolRefExpr *LoExpr = MCSymbolRefExpr::Create(
- Sym.getName(), MCSymbolRefExpr::VK_Mips_GPOFF_LO, MCA.getContext());
+ const MCSymbolRefExpr *HiExpr = MCSymbolRefExpr::create(
+ &Sym, MCSymbolRefExpr::VK_Mips_GPOFF_HI, MCA.getContext());
+ const MCSymbolRefExpr *LoExpr = MCSymbolRefExpr::create(
+ &Sym, MCSymbolRefExpr::VK_Mips_GPOFF_LO, MCA.getContext());
+
// lui $gp, %hi(%neg(%gp_rel(funcSym)))
Inst.setOpcode(Mips::LUi);
- Inst.addOperand(MCOperand::CreateReg(Mips::GP));
- Inst.addOperand(MCOperand::CreateExpr(HiExpr));
+ Inst.addOperand(MCOperand::createReg(Mips::GP));
+ Inst.addOperand(MCOperand::createExpr(HiExpr));
getStreamer().EmitInstruction(Inst, STI);
Inst.clear();
// addiu $gp, $gp, %lo(%neg(%gp_rel(funcSym)))
Inst.setOpcode(Mips::ADDiu);
- Inst.addOperand(MCOperand::CreateReg(Mips::GP));
- Inst.addOperand(MCOperand::CreateReg(Mips::GP));
- Inst.addOperand(MCOperand::CreateExpr(LoExpr));
+ Inst.addOperand(MCOperand::createReg(Mips::GP));
+ Inst.addOperand(MCOperand::createReg(Mips::GP));
+ Inst.addOperand(MCOperand::createExpr(LoExpr));
getStreamer().EmitInstruction(Inst, STI);
Inst.clear();
// daddu $gp, $gp, $funcreg
Inst.setOpcode(Mips::DADDu);
- Inst.addOperand(MCOperand::CreateReg(Mips::GP));
- Inst.addOperand(MCOperand::CreateReg(Mips::GP));
- Inst.addOperand(MCOperand::CreateReg(RegNo));
+ Inst.addOperand(MCOperand::createReg(Mips::GP));
+ Inst.addOperand(MCOperand::createReg(Mips::GP));
+ Inst.addOperand(MCOperand::createReg(RegNo));
getStreamer().EmitInstruction(Inst, STI);
+
+ forbidModuleDirective();
+}
+
+void MipsTargetELFStreamer::emitDirectiveCpreturn(unsigned SaveLocation,
+ bool SaveLocationIsRegister) {
+ // Only N32 and N64 emit anything for .cpreturn iff PIC is set.
+ if (!Pic || !(getABI().IsN32() || getABI().IsN64()))
+ return;
+
+ MCInst Inst;
+ // Either restore the old $gp from a register or on the stack
+ if (SaveLocationIsRegister) {
+ Inst.setOpcode(Mips::OR);
+ Inst.addOperand(MCOperand::createReg(Mips::GP));
+ Inst.addOperand(MCOperand::createReg(SaveLocation));
+ Inst.addOperand(MCOperand::createReg(Mips::ZERO));
+ } else {
+ Inst.setOpcode(Mips::LD);
+ Inst.addOperand(MCOperand::createReg(Mips::GP));
+ Inst.addOperand(MCOperand::createReg(Mips::SP));
+ Inst.addOperand(MCOperand::createImm(SaveLocation));
+ }
+ getStreamer().EmitInstruction(Inst, STI);
+
+ forbidModuleDirective();
+}
+
+void MipsTargetELFStreamer::emitMipsAbiFlags() {
+ MCAssembler &MCA = getStreamer().getAssembler();
+ MCContext &Context = MCA.getContext();
+ MCStreamer &OS = getStreamer();
+ MCSectionELF *Sec = Context.getELFSection(
+ ".MIPS.abiflags", ELF::SHT_MIPS_ABIFLAGS, ELF::SHF_ALLOC, 24, "");
+ MCA.registerSection(*Sec);
+ Sec->setAlignment(8);
+ OS.SwitchSection(Sec);
+
+ OS << ABIFlagsSection;
}