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https://github.com/c64scene-ar/llvm-6502.git
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00bdeb4c54
Summary: This directive is used for setting up $gp in the beginning of a function. It expands to three instructions if PIC is enabled: lui $gp, %hi(_gp_disp) addui $gp, $gp, %lo(_gp_disp) addu $gp, $gp, $reg _gp_disp is a special symbol that the linker sets to the distance between the lui instruction and the context pointer (_gp). Reviewers: dsanders Reviewed By: dsanders Differential Revision: http://reviews.llvm.org/D3480 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207637 91177308-0d34-0410-b5e6-96231b3b80d8
148 lines
5.2 KiB
C++
148 lines
5.2 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 MIPSTARGETSTREAMER_H
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#define MIPSTARGETSTREAMER_H
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#include "llvm/MC/MCELFStreamer.h"
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#include "llvm/MC/MCStreamer.h"
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namespace llvm {
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class MipsTargetStreamer : public MCTargetStreamer {
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virtual void anchor();
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public:
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MipsTargetStreamer(MCStreamer &S);
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virtual void emitDirectiveSetMicroMips() = 0;
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virtual void emitDirectiveSetNoMicroMips() = 0;
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virtual void emitDirectiveSetMips16() = 0;
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virtual void emitDirectiveSetNoMips16() = 0;
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virtual void emitDirectiveSetReorder() = 0;
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virtual void emitDirectiveSetNoReorder() = 0;
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virtual void emitDirectiveSetMacro() = 0;
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virtual void emitDirectiveSetNoMacro() = 0;
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virtual void emitDirectiveSetAt() = 0;
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virtual void emitDirectiveSetNoAt() = 0;
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virtual void emitDirectiveEnd(StringRef Name) = 0;
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virtual void emitDirectiveEnt(const MCSymbol &Symbol) = 0;
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virtual void emitDirectiveAbiCalls() = 0;
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virtual void emitDirectiveNaN2008() = 0;
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virtual void emitDirectiveNaNLegacy() = 0;
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virtual void emitDirectiveOptionPic0() = 0;
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virtual void emitDirectiveOptionPic2() = 0;
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virtual void emitFrame(unsigned StackReg, unsigned StackSize,
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unsigned ReturnReg) = 0;
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virtual void emitMask(unsigned CPUBitmask, int CPUTopSavedRegOff) = 0;
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virtual void emitFMask(unsigned FPUBitmask, int FPUTopSavedRegOff) = 0;
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virtual void emitDirectiveSetMips32R2() = 0;
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virtual void emitDirectiveSetMips64() = 0;
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virtual void emitDirectiveSetMips64R2() = 0;
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virtual void emitDirectiveSetDsp() = 0;
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// PIC support
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virtual void emitDirectiveCpload(unsigned RegNo) = 0;
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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 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 emitDirectiveSetMips32R2() override;
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void emitDirectiveSetMips64() override;
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void emitDirectiveSetMips64R2() override;
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void emitDirectiveSetDsp() override;
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// PIC support
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virtual void emitDirectiveCpload(unsigned RegNo);
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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 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 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 emitDirectiveSetMips32R2() override;
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void emitDirectiveSetMips64() override;
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void emitDirectiveSetMips64R2() override;
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void emitDirectiveSetDsp() override;
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// PIC support
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virtual void emitDirectiveCpload(unsigned RegNo);
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protected:
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bool isO32() const { return STI.getFeatureBits() & Mips::FeatureO32; }
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bool isN32() const { return STI.getFeatureBits() & Mips::FeatureN32; }
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bool isN64() const { return STI.getFeatureBits() & Mips::FeatureN64; }
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};
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}
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#endif
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