//===- X86JITInfo.h - X86 implementation of the JIT interface --*- 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.
-//
+// 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 TargetMachine;
- class IntrinsicLowering;
+ class X86TargetMachine;
class X86JITInfo : public TargetJITInfo {
- TargetMachine &TM;
+ X86TargetMachine &TM;
+ intptr_t PICBase;
+ char* TLSOffset;
public:
- X86JITInfo(TargetMachine &tm) : TM(tm) {}
+ explicit X86JITInfo(X86TargetMachine &tm) : TM(tm) {
+ useGOT = 0;
+ TLSOffset = 0;
+ }
- /// addPassesToJITCompile - Add passes to the specified pass manager to
- /// implement a fast dynamic compiler for this target. Return true if this
- /// is not supported for this target.
- ///
- virtual void addPassesToJITCompile(FunctionPassManager &PM);
-
/// 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);
+
+ /// emitGlobalValueLazyPtr - Use the specified MachineCodeEmitter object to
+ /// emit a lazy pointer which contains the address of the specified ptr.
+ virtual void *emitGlobalValueLazyPtr(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 intptr_t getPICJumpTableEntry(intptr_t BB, intptr_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);
- /// getJITStubForFunction - Create or return a stub for the specified
- /// function. This stub acts just like the specified function, except that
- /// it allows the "address" of the function to be taken without having to
- /// generate code for it.
- virtual void *getJITStubForFunction(Function *F, MachineCodeEmitter &MCE);
+ /// 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(intptr_t Base) { PICBase = Base; }
+ intptr_t getPICBase() const { return PICBase; }
};
}