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Diffstat (limited to 'llvm/lib/Target/SparcV9/SparcV9CodeEmitter.h')
-rw-r--r-- | llvm/lib/Target/SparcV9/SparcV9CodeEmitter.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/llvm/lib/Target/SparcV9/SparcV9CodeEmitter.h b/llvm/lib/Target/SparcV9/SparcV9CodeEmitter.h new file mode 100644 index 00000000000..d21345ec041 --- /dev/null +++ b/llvm/lib/Target/SparcV9/SparcV9CodeEmitter.h @@ -0,0 +1,88 @@ +//===-- SparcV9CodeEmitter.h ------------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file was developed by the LLVM research group and is distributed under +// the University of Illinois Open Source License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// TODO: Need a description here. +// +//===----------------------------------------------------------------------===// + +#ifndef SPARCV9CODEEMITTER_H +#define SPARCV9CODEEMITTER_H + +#include "llvm/BasicBlock.h" +#include "llvm/CodeGen/MachineCodeEmitter.h" +#include "llvm/CodeGen/MachineFunctionPass.h" +#include "llvm/Target/TargetMachine.h" + +namespace llvm { + +class GlobalValue; +class MachineInstr; +class MachineOperand; + +class SparcV9CodeEmitter : public MachineFunctionPass { + TargetMachine &TM; + MachineCodeEmitter &MCE; + const BasicBlock *currBB; + + // Tracks which instruction references which BasicBlock + std::vector<std::pair<const BasicBlock*, + std::pair<unsigned*,MachineInstr*> > > BBRefs; + // Tracks where each BasicBlock starts + std::map<const BasicBlock*, long> BBLocations; + +public: + SparcV9CodeEmitter(TargetMachine &T, MachineCodeEmitter &M); + ~SparcV9CodeEmitter(); + + /// runOnMachineFunction - emits the given machine function to memory. + /// + bool runOnMachineFunction(MachineFunction &F); + + /// emitWord - writes out the given 32-bit value to memory at the current PC. + /// + void emitWord(unsigned Val); + + /// getBinaryCodeForInstr - This function, generated by the + /// CodeEmitterGenerator using TableGen, produces the binary encoding for + /// machine instructions. + /// + unsigned getBinaryCodeForInstr(MachineInstr &MI); + + /// emitFarCall - produces a code sequence to make a call to a destination + /// that does not fit in the 30 bits that a call instruction allows. + /// If the function F is non-null, this also saves the return address in + /// the LazyResolver map of the JITResolver. + void emitFarCall(uint64_t Addr, Function *F = 0); + +private: + /// getMachineOpValue - + /// + int64_t getMachineOpValue(MachineInstr &MI, MachineOperand &MO); + + /// emitBasicBlock - + /// + void emitBasicBlock(MachineBasicBlock &MBB); + + /// getValueBit - + /// + unsigned getValueBit(int64_t Val, unsigned bit); + + /// getGlobalAddress - + /// + void* getGlobalAddress(GlobalValue *V, MachineInstr &MI, + bool isPCRelative); + /// emitFarCall - + /// + unsigned getRealRegNum(unsigned fakeReg, MachineInstr &MI); + +}; + +} // End llvm namespace + +#endif |