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than on MipsSubtargetInfo. This required a bit of massaging in the MC level to handle this since MC is a) largely a collection of disparate classes with no hierarchy, and b) there's no overarching equivalent to the TargetMachine, instead only the subtarget via MCSubtargetInfo (which is the base class of TargetSubtargetInfo). We're now storing the ABI in both the TargetMachine level and in the MC level because the AsmParser and the TargetStreamer both need to know what ABI we have to parse assembly and emit objects. The target streamer has a pointer to the one in the asm parser and is updated when the asm parser is created. This is fragile as the FIXME comment notes, but shouldn't be a problem in practice since we always create an asm parser before attempting to emit object code via the assembler. The TargetMachine now contains the ABI so that the DataLayout can be constructed dependent upon ABI. All testcases have been updated to use the -target-abi command line flag so that we can set the ABI without using a subtarget feature. Should be no change visible externally here. llvm-svn: 227102
237 lines
8.3 KiB
C++
237 lines
8.3 KiB
C++
//===-- MipsTargetStreamer.h - Mips Target Streamer ------------*- C++ -*--===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_MIPS_MIPSTARGETSTREAMER_H
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#define LLVM_LIB_TARGET_MIPS_MIPSTARGETSTREAMER_H
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#include "MCTargetDesc/MipsABIFlagsSection.h"
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#include "MCTargetDesc/MipsABIInfo.h"
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#include "llvm/MC/MCELFStreamer.h"
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#include "llvm/MC/MCRegisterInfo.h"
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#include "llvm/MC/MCStreamer.h"
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namespace llvm {
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struct MipsABIFlagsSection;
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class MipsTargetStreamer : public MCTargetStreamer {
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public:
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MipsTargetStreamer(MCStreamer &S);
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virtual void emitDirectiveSetMicroMips();
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virtual void emitDirectiveSetNoMicroMips();
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virtual void emitDirectiveSetMips16();
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virtual void emitDirectiveSetNoMips16();
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virtual void emitDirectiveSetReorder();
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virtual void emitDirectiveSetNoReorder();
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virtual void emitDirectiveSetMacro();
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virtual void emitDirectiveSetNoMacro();
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virtual void emitDirectiveSetMsa();
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virtual void emitDirectiveSetNoMsa();
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virtual void emitDirectiveSetAt();
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virtual void emitDirectiveSetNoAt();
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virtual void emitDirectiveEnd(StringRef Name);
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virtual void emitDirectiveEnt(const MCSymbol &Symbol);
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virtual void emitDirectiveAbiCalls();
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virtual void emitDirectiveNaN2008();
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virtual void emitDirectiveNaNLegacy();
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virtual void emitDirectiveOptionPic0();
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virtual void emitDirectiveOptionPic2();
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virtual void emitFrame(unsigned StackReg, unsigned StackSize,
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unsigned ReturnReg);
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virtual void emitMask(unsigned CPUBitmask, int CPUTopSavedRegOff);
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virtual void emitFMask(unsigned FPUBitmask, int FPUTopSavedRegOff);
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virtual void emitDirectiveSetArch(StringRef Arch);
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virtual void emitDirectiveSetMips0();
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virtual void emitDirectiveSetMips1();
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virtual void emitDirectiveSetMips2();
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virtual void emitDirectiveSetMips3();
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virtual void emitDirectiveSetMips4();
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virtual void emitDirectiveSetMips5();
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virtual void emitDirectiveSetMips32();
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virtual void emitDirectiveSetMips32R2();
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virtual void emitDirectiveSetMips32R6();
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virtual void emitDirectiveSetMips64();
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virtual void emitDirectiveSetMips64R2();
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virtual void emitDirectiveSetMips64R6();
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virtual void emitDirectiveSetDsp();
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virtual void emitDirectiveSetNoDsp();
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virtual void emitDirectiveSetPop();
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virtual void emitDirectiveSetPush();
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// PIC support
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virtual void emitDirectiveCpLoad(unsigned RegNo);
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virtual void emitDirectiveCpsetup(unsigned RegNo, int RegOrOffset,
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const MCSymbol &Sym, bool IsReg);
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/// Emit a '.module fp=value' directive using the given values.
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/// Updates the .MIPS.abiflags section
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virtual void emitDirectiveModuleFP(MipsABIFlagsSection::FpABIKind Value,
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bool Is32BitABI) {
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ABIFlagsSection.setFpABI(Value, Is32BitABI);
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}
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/// Emit a '.module fp=value' directive using the current values of the
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/// .MIPS.abiflags section.
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void emitDirectiveModuleFP() {
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emitDirectiveModuleFP(ABIFlagsSection.getFpABI(),
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ABIFlagsSection.Is32BitABI);
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}
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virtual void emitDirectiveModuleOddSPReg(bool Enabled, bool IsO32ABI);
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virtual void emitDirectiveSetFp(MipsABIFlagsSection::FpABIKind Value){};
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virtual void emitMipsAbiFlags(){};
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void forbidModuleDirective() { ModuleDirectiveAllowed = false; }
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bool isModuleDirectiveAllowed() { return ModuleDirectiveAllowed; }
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// This method enables template classes to set internal abi flags
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// structure values.
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template <class PredicateLibrary>
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void updateABIInfo(const PredicateLibrary &P) {
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ABI = &P.getABI();
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ABIFlagsSection.setAllFromPredicates(P);
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}
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MipsABIFlagsSection &getABIFlagsSection() { return ABIFlagsSection; }
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const MipsABIInfo &getABI() const {
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assert(ABI && "ABI hasn't been set!");
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return *ABI;
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}
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protected:
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const MipsABIInfo *ABI;
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MipsABIFlagsSection ABIFlagsSection;
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bool GPRInfoSet;
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unsigned GPRBitMask;
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int GPROffset;
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bool FPRInfoSet;
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unsigned FPRBitMask;
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int FPROffset;
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bool FrameInfoSet;
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int FrameOffset;
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unsigned FrameReg;
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unsigned ReturnReg;
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private:
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bool ModuleDirectiveAllowed;
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};
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// This part is for ascii assembly output
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class MipsTargetAsmStreamer : public MipsTargetStreamer {
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formatted_raw_ostream &OS;
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public:
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MipsTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS);
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void emitDirectiveSetMicroMips() override;
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void emitDirectiveSetNoMicroMips() override;
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void emitDirectiveSetMips16() override;
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void emitDirectiveSetNoMips16() override;
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void emitDirectiveSetReorder() override;
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void emitDirectiveSetNoReorder() override;
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void emitDirectiveSetMacro() override;
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void emitDirectiveSetNoMacro() override;
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void emitDirectiveSetMsa() override;
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void emitDirectiveSetNoMsa() override;
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void emitDirectiveSetAt() override;
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void emitDirectiveSetNoAt() override;
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void emitDirectiveEnd(StringRef Name) override;
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void emitDirectiveEnt(const MCSymbol &Symbol) override;
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void emitDirectiveAbiCalls() override;
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void emitDirectiveNaN2008() override;
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void emitDirectiveNaNLegacy() override;
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void emitDirectiveOptionPic0() override;
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void emitDirectiveOptionPic2() override;
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void emitFrame(unsigned StackReg, unsigned StackSize,
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unsigned ReturnReg) override;
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void emitMask(unsigned CPUBitmask, int CPUTopSavedRegOff) override;
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void emitFMask(unsigned FPUBitmask, int FPUTopSavedRegOff) override;
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void emitDirectiveSetArch(StringRef Arch) override;
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void emitDirectiveSetMips0() override;
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void emitDirectiveSetMips1() override;
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void emitDirectiveSetMips2() override;
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void emitDirectiveSetMips3() override;
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void emitDirectiveSetMips4() override;
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void emitDirectiveSetMips5() override;
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void emitDirectiveSetMips32() override;
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void emitDirectiveSetMips32R2() override;
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void emitDirectiveSetMips32R6() override;
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void emitDirectiveSetMips64() override;
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void emitDirectiveSetMips64R2() override;
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void emitDirectiveSetMips64R6() override;
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void emitDirectiveSetDsp() override;
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void emitDirectiveSetNoDsp() override;
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void emitDirectiveSetPop() override;
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void emitDirectiveSetPush() override;
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// PIC support
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void emitDirectiveCpLoad(unsigned RegNo) override;
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void emitDirectiveCpsetup(unsigned RegNo, int RegOrOffset,
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const MCSymbol &Sym, bool IsReg) override;
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// ABI Flags
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void emitDirectiveModuleFP(MipsABIFlagsSection::FpABIKind Value,
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bool Is32BitABI) override;
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void emitDirectiveModuleOddSPReg(bool Enabled, bool IsO32ABI) override;
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void emitDirectiveSetFp(MipsABIFlagsSection::FpABIKind Value) override;
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void emitMipsAbiFlags() override;
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};
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// This part is for ELF object output
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class MipsTargetELFStreamer : public MipsTargetStreamer {
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bool MicroMipsEnabled;
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const MCSubtargetInfo &STI;
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bool Pic;
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public:
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bool isMicroMipsEnabled() const { return MicroMipsEnabled; }
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MCELFStreamer &getStreamer();
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MipsTargetELFStreamer(MCStreamer &S, const MCSubtargetInfo &STI);
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void emitLabel(MCSymbol *Symbol) override;
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void emitAssignment(MCSymbol *Symbol, const MCExpr *Value) override;
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void finish() override;
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void emitDirectiveSetMicroMips() override;
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void emitDirectiveSetNoMicroMips() override;
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void emitDirectiveSetMips16() override;
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void emitDirectiveSetNoReorder() override;
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void emitDirectiveEnd(StringRef Name) override;
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void emitDirectiveEnt(const MCSymbol &Symbol) override;
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void emitDirectiveAbiCalls() override;
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void emitDirectiveNaN2008() override;
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void emitDirectiveNaNLegacy() override;
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void emitDirectiveOptionPic0() override;
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void emitDirectiveOptionPic2() override;
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void emitFrame(unsigned StackReg, unsigned StackSize,
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unsigned ReturnReg) override;
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void emitMask(unsigned CPUBitmask, int CPUTopSavedRegOff) override;
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void emitFMask(unsigned FPUBitmask, int FPUTopSavedRegOff) override;
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// PIC support
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void emitDirectiveCpLoad(unsigned RegNo) override;
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void emitDirectiveCpsetup(unsigned RegNo, int RegOrOffset,
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const MCSymbol &Sym, bool IsReg) override;
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// ABI Flags
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void emitDirectiveModuleOddSPReg(bool Enabled, bool IsO32ABI) override;
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void emitMipsAbiFlags() override;
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};
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}
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#endif
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