mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-12-29 15:04:57 +00:00
78 lines
2.9 KiB
C++
78 lines
2.9 KiB
C++
//===- X86JITInfo.h - X86 implementation 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 X86 implementation of the TargetJITInfo class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef X86JITINFO_H
|
|
#define X86JITINFO_H
|
|
|
|
#include "llvm/Function.h"
|
|
#include "llvm/Target/TargetJITInfo.h"
|
|
|
|
namespace llvm {
|
|
class X86TargetMachine;
|
|
|
|
class X86JITInfo : public TargetJITInfo {
|
|
X86TargetMachine &TM;
|
|
uintptr_t PICBase;
|
|
char* TLSOffset;
|
|
public:
|
|
explicit X86JITInfo(X86TargetMachine &tm) : TM(tm) {
|
|
useGOT = 0;
|
|
TLSOffset = 0;
|
|
}
|
|
|
|
/// 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);
|
|
|
|
/// emitGlobalValueIndirectSym - Use the specified MachineCodeEmitter object
|
|
/// to emit an indirect symbol which contains the address of the specified
|
|
/// ptr.
|
|
virtual void *emitGlobalValueIndirectSym(const GlobalValue* GV, void *ptr,
|
|
MachineCodeEmitter &MCE);
|
|
|
|
/// emitFunctionStub - Use the specified MachineCodeEmitter object to emit a
|
|
/// small native function that simply calls the function at the specified
|
|
/// address.
|
|
virtual void *emitFunctionStub(const Function* F, void *Fn,
|
|
MachineCodeEmitter &MCE);
|
|
|
|
/// getPICJumpTableEntry - Returns the value of the jumptable entry for the
|
|
/// specific basic block.
|
|
virtual uintptr_t getPICJumpTableEntry(uintptr_t BB, uintptr_t JTBase);
|
|
|
|
/// getLazyResolverFunction - Expose the lazy resolver to the JIT.
|
|
virtual LazyResolverFn getLazyResolverFunction(JITCompilerFn);
|
|
|
|
/// relocate - Before the JIT can run a block of code that has been emitted,
|
|
/// it must rewrite the code to contain the actual addresses of any
|
|
/// referenced global symbols.
|
|
virtual void relocate(void *Function, MachineRelocation *MR,
|
|
unsigned NumRelocs, unsigned char* GOTBase);
|
|
|
|
/// allocateThreadLocalMemory - Each target has its own way of
|
|
/// handling thread local variables. This method returns a value only
|
|
/// meaningful to the target.
|
|
virtual char* allocateThreadLocalMemory(size_t size);
|
|
|
|
/// setPICBase / getPICBase - Getter / setter of PICBase, used to compute
|
|
/// PIC jumptable entry.
|
|
void setPICBase(uintptr_t Base) { PICBase = Base; }
|
|
uintptr_t getPICBase() const { return PICBase; }
|
|
};
|
|
}
|
|
|
|
#endif
|