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94 lines
2.9 KiB
C++
94 lines
2.9 KiB
C++
//===-- SparcV9CodeEmitter.h ------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Target-specific portions of the machine code emitter for the SparcV9.
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// This class interfaces with the JIT's Emitter in order to turn MachineInstrs
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// into words of binary machine code. Its code is partially generated by
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// TableGen's CodeEmitterGenerator.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SPARCV9CODEEMITTER_H
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#define SPARCV9CODEEMITTER_H
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#include "llvm/BasicBlock.h"
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#include "llvm/CodeGen/MachineCodeEmitter.h"
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#include "llvm/CodeGen/MachineFunctionPass.h"
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#include "llvm/Target/TargetMachine.h"
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namespace llvm {
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class GlobalValue;
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class MachineInstr;
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class MachineOperand;
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class SparcV9CodeEmitter : public MachineFunctionPass {
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TargetMachine &TM;
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MachineCodeEmitter &MCE;
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const BasicBlock *currBB;
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// Tracks which instruction references which BasicBlock
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std::vector<std::pair<const BasicBlock*,
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std::pair<unsigned*,MachineInstr*> > > BBRefs;
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// Tracks where each BasicBlock starts
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std::map<const BasicBlock*, long> BBLocations;
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public:
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SparcV9CodeEmitter(TargetMachine &T, MachineCodeEmitter &M);
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~SparcV9CodeEmitter();
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const char *getPassName() const { return "SparcV9 Machine Code Emitter"; }
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/// runOnMachineFunction - emits the given machine function to memory.
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///
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bool runOnMachineFunction(MachineFunction &F);
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/// emitWord - writes out the given 32-bit value to memory at the current PC.
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///
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void emitWord(unsigned Val);
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/// getBinaryCodeForInstr - This function, generated by the
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/// CodeEmitterGenerator using TableGen, produces the binary encoding for
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/// machine instructions.
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///
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unsigned getBinaryCodeForInstr(MachineInstr &MI);
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/// emitFarCall - produces a code sequence to make a call to a destination
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/// that does not fit in the 30 bits that a call instruction allows.
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/// If the function F is non-null, this also saves the return address in
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/// the LazyResolver map of the JITResolver.
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void emitFarCall(uint64_t Addr, Function *F = 0);
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private:
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/// getMachineOpValue -
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///
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int64_t getMachineOpValue(MachineInstr &MI, MachineOperand &MO);
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/// emitBasicBlock -
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///
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void emitBasicBlock(MachineBasicBlock &MBB);
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/// getValueBit -
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///
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unsigned getValueBit(int64_t Val, unsigned bit);
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/// getGlobalAddress -
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///
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void* getGlobalAddress(GlobalValue *V, MachineInstr &MI,
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bool isPCRelative);
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/// emitFarCall -
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///
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unsigned getRealRegNum(unsigned fakeReg, MachineInstr &MI);
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};
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} // End llvm namespace
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#endif
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