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llvm-6502/lib/Target/PowerPC/PPCJITInfo.h
Jeffrey Yasskin 108c838093 * Move stub allocation inside the JITEmitter, instead of exposing a
way for each TargetJITInfo subclass to allocate its own stubs. This
means stubs aren't as exactly-sized anymore, but it lets us get rid of
TargetJITInfo::emitFunctionStubAtAddr(), which lets ARM and PPC
support the eager JIT, fixing http://llvm.org/PR4816.

* Rename the JITEmitter's stub creation functions to describe the kind
of stub they create. So far, all of them create lazy-compilation
stubs, but they sometimes get used when far-call stubs are needed.
Fixing http://llvm.org/PR5201 will involve fixing this.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89715 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-23 23:35:19 +00:00

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//===- PPCJITInfo.h - PowerPC impl. of the JIT interface --------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the PowerPC implementation of the TargetJITInfo class.
//
//===----------------------------------------------------------------------===//
#ifndef POWERPC_JITINFO_H
#define POWERPC_JITINFO_H
#include "llvm/Target/TargetJITInfo.h"
#include "llvm/CodeGen/JITCodeEmitter.h"
namespace llvm {
class PPCTargetMachine;
class PPCJITInfo : public TargetJITInfo {
protected:
PPCTargetMachine &TM;
bool is64Bit;
public:
PPCJITInfo(PPCTargetMachine &tm, bool tmIs64Bit) : TM(tm) {
useGOT = 0;
is64Bit = tmIs64Bit;
}
virtual StubLayout getStubLayout();
virtual void *emitFunctionStub(const Function* F, void *Fn,
JITCodeEmitter &JCE);
virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn);
virtual void relocate(void *Function, MachineRelocation *MR,
unsigned NumRelocs, unsigned char* GOTBase);
/// replaceMachineCodeForFunction - Make it so that calling the function
/// whose machine code is at OLD turns into a call to NEW, perhaps by
/// overwriting OLD with a branch to NEW. This is used for self-modifying
/// code.
///
virtual void replaceMachineCodeForFunction(void *Old, void *New);
};
}
#endif