llvm-6502/lib/MC/MCDisassembler/Disassembler.h
Sean Callanan 55e7980422 Fixed two leaks in the MC disassembler. The MC
disassembler requires a MCSubtargetInfo and a
MCInstrInfo to exist in order to initialize the
instruction printer and disassembler; however,
although the printer and disassembler keep
references to these objects they do not own them.
Previously, the MCSubtargetInfo and MCInstrInfo
objects were just leaked.

I have extended LLVMDisasmContext to own these
objects and delete them when it is destroyed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154192 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-06 18:21:09 +00:00

110 lines
3.8 KiB
C++

//===------------- Disassembler.h - LLVM Disassembler -----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the interface for the Disassembly library's disassembler
// context. The disassembler is responsible for producing strings for
// individual instructions according to a given architecture and disassembly
// syntax.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_MC_DISASSEMBLER_H
#define LLVM_MC_DISASSEMBLER_H
#include "llvm-c/Disassembler.h"
#include <string>
#include "llvm/ADT/OwningPtr.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/raw_ostream.h"
namespace llvm {
class MCContext;
class MCAsmInfo;
class MCDisassembler;
class MCInstPrinter;
class MCInstrInfo;
class MCRegisterInfo;
class MCSubtargetInfo;
class Target;
//
// This is the disassembler context returned by LLVMCreateDisasm().
//
class LLVMDisasmContext {
private:
//
// The passed parameters when the disassembler context is created.
//
// The TripleName for this disassembler.
std::string TripleName;
// The pointer to the caller's block of symbolic information.
void *DisInfo;
// The Triple specific symbolic information type returned by GetOpInfo.
int TagType;
// The function to get the symbolic information for operands.
LLVMOpInfoCallback GetOpInfo;
// The function to look up a symbol name.
LLVMSymbolLookupCallback SymbolLookUp;
//
// The objects created and saved by LLVMCreateDisasm() then used by
// LLVMDisasmInstruction().
//
// The LLVM target corresponding to the disassembler.
// FIXME: using llvm::OwningPtr<const llvm::Target> causes a malloc error
// when this LLVMDisasmContext is deleted.
const Target *TheTarget;
// The assembly information for the target architecture.
llvm::OwningPtr<const llvm::MCAsmInfo> MAI;
// The register information for the target architecture.
llvm::OwningPtr<const llvm::MCRegisterInfo> MRI;
// The subtarget information for the target architecture.
llvm::OwningPtr<const llvm::MCSubtargetInfo> MSI;
// The instruction information for the target architecture.
llvm::OwningPtr<const llvm::MCInstrInfo> MII;
// The assembly context for creating symbols and MCExprs.
llvm::OwningPtr<const llvm::MCContext> Ctx;
// The disassembler for the target architecture.
llvm::OwningPtr<const llvm::MCDisassembler> DisAsm;
// The instruction printer for the target architecture.
llvm::OwningPtr<llvm::MCInstPrinter> IP;
public:
// Comment stream and backing vector.
SmallString<128> CommentsToEmit;
raw_svector_ostream CommentStream;
LLVMDisasmContext(std::string tripleName, void *disInfo, int tagType,
LLVMOpInfoCallback getOpInfo,
LLVMSymbolLookupCallback symbolLookUp,
const Target *theTarget, const MCAsmInfo *mAI,
const MCRegisterInfo *mRI,
const MCSubtargetInfo *mSI,
const MCInstrInfo *mII,
llvm::MCContext *ctx, const MCDisassembler *disAsm,
MCInstPrinter *iP) : TripleName(tripleName),
DisInfo(disInfo), TagType(tagType), GetOpInfo(getOpInfo),
SymbolLookUp(symbolLookUp), TheTarget(theTarget),
CommentStream(CommentsToEmit) {
MAI.reset(mAI);
MRI.reset(mRI);
MSI.reset(mSI);
MII.reset(mII);
Ctx.reset(ctx);
DisAsm.reset(disAsm);
IP.reset(iP);
}
const MCDisassembler *getDisAsm() const { return DisAsm.get(); }
const MCAsmInfo *getAsmInfo() const { return MAI.get(); }
MCInstPrinter *getIP() { return IP.get(); }
};
} // namespace llvm
#endif