102 lines
3.3 KiB
C++
102 lines
3.3 KiB
C++
//===-- PPC32CodeEmitter.cpp - JIT Code Emitter for PowerPC32 -----*- 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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//
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//===----------------------------------------------------------------------===//
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#include "PPC32JITInfo.h"
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#include "PPC32TargetMachine.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/CodeGen/Passes.h"
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#include "Support/Debug.h"
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namespace llvm {
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namespace {
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class PPC32CodeEmitter : public MachineFunctionPass {
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TargetMachine &TM;
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MachineCodeEmitter &MCE;
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public:
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PPC32CodeEmitter(TargetMachine &T, MachineCodeEmitter &M)
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: TM(T), MCE(M) {}
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const char *getPassName() const { return "PowerPC Machine Code Emitter"; }
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/// runOnMachineFunction - emits the given MachineFunction to memory
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///
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bool runOnMachineFunction(MachineFunction &MF);
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/// emitBasicBlock - emits the given MachineBasicBlock to memory
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///
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void emitBasicBlock(MachineBasicBlock &MBB);
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/// emitWord - write a 32-bit word to memory at the current PC
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///
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void emitWord(unsigned w) { MCE.emitWord(w); }
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unsigned getValueBit(int64_t Val, unsigned bit);
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/// getBinaryCodeForInstr - returns the assembled code for an instruction
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///
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unsigned getBinaryCodeForInstr(MachineInstr &MI) { return 0; }
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};
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}
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/// addPassesToEmitMachineCode - Add passes to the specified pass manager to get
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/// machine code emitted. This uses a MachineCodeEmitter object to handle
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/// actually outputting the machine code and resolving things like the address
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/// of functions. This method should returns true if machine code emission is
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/// not supported.
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///
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bool PPC32TargetMachine::addPassesToEmitMachineCode(FunctionPassManager &PM,
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MachineCodeEmitter &MCE) {
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// Machine code emitter pass for PowerPC
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PM.add(new PPC32CodeEmitter(*this, MCE));
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// Delete machine code for this function after emitting it:
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PM.add(createMachineCodeDeleter());
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// We don't yet support machine code emission
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return true;
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}
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bool PPC32CodeEmitter::runOnMachineFunction(MachineFunction &MF) {
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MCE.startFunction(MF);
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MCE.emitConstantPool(MF.getConstantPool());
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for (MachineFunction::iterator I = MF.begin(), E = MF.end(); I != E; ++I)
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emitBasicBlock(*I);
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MCE.finishFunction(MF);
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return false;
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}
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void PPC32CodeEmitter::emitBasicBlock(MachineBasicBlock &MBB) {
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for (MachineBasicBlock::iterator I = MBB.begin(), E = MBB.end(); I != E; ++I)
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emitWord(getBinaryCodeForInstr(*I));
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}
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unsigned PPC32CodeEmitter::getValueBit(int64_t Val, unsigned bit) {
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Val >>= bit;
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return (Val & 1);
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}
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void *PPC32JITInfo::getJITStubForFunction(Function *F,
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MachineCodeEmitter &MCE) {
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assert (0 && "PPC32JITInfo::getJITStubForFunction not implemented");
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return 0;
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}
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void PPC32JITInfo::replaceMachineCodeForFunction (void *Old, void *New) {
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assert (0 && "PPC32JITInfo::replaceMachineCodeForFunction not implemented");
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}
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//#include "PowerPCGenCodeEmitter.inc"
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} // end llvm namespace
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