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Remove the files for r128308 as it is causing a buildbot failure. 

llvm-svn: 128309
This commit is contained in:
Kevin Enderby 2011-03-26 00:23:05 +00:00
parent c8b4078654
commit d077a857cc
3 changed files with 0 additions and 365 deletions
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106
llvm/include/llvm-c/Disassembler.h
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/*===-- llvm-c/Disassembler.h - Disassembler Public C Interface ---*- C -*-===*\
|* *|
|* The LLVM Compiler Infrastructure *|
|* *|
|* This file is distributed under the University of Illinois Open Source *|
|* License. See LICENSE.TXT for details. *|
|* *|
|*===----------------------------------------------------------------------===*|
|* *|
|* This header provides public interface to a disassembler library. *|
|* LLVM provides an implementation of this interface. *|
|* *|
\*===----------------------------------------------------------------------===*/
#ifndef LLVM_C_DISASSEMBLER_H
#define LLVM_C_DISASSEMBLER_H 1
#include <stdint.h>
#include <stddef.h>
/**
* An opaque reference to a disassembler context.
*/
typedef void *LLVMDisasmContextRef;
/**
* The type for the operand information call back function. This is called to
* get the symbolic information for an operand of an instruction. Typically
* this is from the relocation information, symbol table, etc. That block of
* information is saved when the disassembler context is created and passed to
* the call back in the DisInfo parameter. The instruction containing operand
* is at the PC parameter. For some instruction sets, there can be more than
* one operand with symbolic information. To determine the symbolic operand
* infomation for each operand, the bytes for the specific operand in the
* instruction are specified by the Offset parameter and its byte widith is the
* size parameter. For instructions sets with fixed widths and one symbolic
* operand per instruction, the Offset parameter will be zero and Size parameter
* will be the instruction width. The information is returned in TagBuf and is
* Triple specific with its specific information defined by the value of
* TagType for that Triple. If symbolic information is returned the function
* returns 1 else it returns 0.
*/
typedef int (*LLVMOpInfoCallback)(void *DisInfo,
uint64_t PC,
uint64_t Offset,
uint64_t Size,
int TagType,
void *TagBuf);
/**
* The type for the symbol lookup function. This may be called by the
* disassembler for such things like adding a comment for a PC plus a constant
* offset load instruction to use a symbol name instead of a load address value.
* It is passed the block information is saved when the disassembler context is
* created and a value of a symbol to look up. If no symbol is found NULL is
* to be returned.
*/
typedef const char *(*LLVMSymbolLookupCallback)(void *DisInfo,
uint64_t SymbolValue);
#ifdef __cplusplus
extern "C" {
#endif /* !defined(__cplusplus) */
/**
* Create a disassembler for the TripleName. Symbolic disassembly is supported
* by passing a block of information in the DisInfo parameter and specifing the
* TagType and call back functions as described above. These can all be passed
* as NULL. If successfull this returns a disassembler context if not it
* returns NULL.
*/
extern LLVMDisasmContextRef
LLVMCreateDisasm(const char *TripleName,
void *DisInfo,
int TagType,
LLVMOpInfoCallback GetOpInfo,
LLVMSymbolLookupCallback SymbolLookUp);
/**
* Dispose of a disassembler context.
*/
extern void
LLVMDisasmDispose(LLVMDisasmContextRef DC);
/**
* Disassmble a single instruction using the disassembler context specified in
* the parameter DC. The bytes of the instuction are specified in the parameter
* Bytes, and contains at least BytesSize number of bytes. The instruction is
* at the address specified by the PC parameter. If a valid instruction can be
* disassembled its string is returned indirectly in OutString which whos size
* is specified in the parameter OutStringSize. This function returns the
* number of bytes in the instruction or zero if there was no valid instruction.
*/
extern size_t
LLVMDisasmInstruction(LLVMDisasmContextRef DC,
uint8_t *Bytes,
uint64_t BytesSize,
uint64_t PC,
char *OutString,
size_t OutStringSize);
#ifdef __cplusplus
}
#endif /* !defined(__cplusplus) */
#endif /* !defined(LLVM_C_DISASSEMBLER_H) */

169
llvm/lib/MC/MCDisassembler/Disassembler.cpp
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//===-- lib/MC/Disassembler.cpp - Disassembler Public C Interface -*- C -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "Disassembler.h"
#include <stdio.h>
#include "llvm-c/Disassembler.h"
#include <string>
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCDisassembler.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstPrinter.h"
#include "llvm/MC/MCContext.h"
#include "llvm/Target/TargetRegistry.h"
#include "llvm/Target/TargetAsmInfo.h" // FIXME.
#include "llvm/Target/TargetMachine.h" // FIXME.
#include "llvm/Target/targetSelect.h"
#include "llvm/Support/MemoryObject.h"
namespace llvm {
class Target;
} // namespace llvm
using namespace llvm;
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
//
// LLVMCreateDisasm() creates a disassembler for the TripleName. Symbolic
// disassembly is supported by passing a block of information in the DisInfo
// parameter and specifing the TagType and call back functions as described in
// the header llvm-c/Disassembler.h . The pointer to the block and the
// functions can all be passed as NULL. If successfull this returns a
// disassembler context if not it returns NULL.
//
LLVMDisasmContextRef LLVMCreateDisasm(const char *TripleName, void *DisInfo,
int TagType, LLVMOpInfoCallback GetOpInfo,
LLVMSymbolLookupCallback SymbolLookUp) {
// Initialize targets and assembly printers/parsers.
llvm::InitializeAllTargetInfos();
// FIXME: We shouldn't need to initialize the Target(Machine)s.
llvm::InitializeAllTargets();
llvm::InitializeAllAsmPrinters();
llvm::InitializeAllAsmParsers();
llvm::InitializeAllDisassemblers();
// Get the target.
std::string Error;
const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);
assert(TheTarget && "Unable to create target!");
// Get the assembler info needed to setup the MCContext.
const MCAsmInfo *MAI = TheTarget->createAsmInfo(TripleName);
assert(MAI && "Unable to create target asm info!");
// Package up features to be passed to target/subtarget
std::string FeaturesStr;
// FIXME: We shouldn't need to do this (and link in codegen).
// When we split this out, we should do it in a way that makes
// it straightforward to switch subtargets on the fly.
TargetMachine *TM = TheTarget->createTargetMachine(TripleName, FeaturesStr);
assert(TM && "Unable to create target machine!");
// Get the target assembler info needed to setup the context.
const TargetAsmInfo *tai = new TargetAsmInfo(*TM);
assert(tai && "Unable to create target assembler!");
// Set up the MCContext for creating symbols and MCExpr's.
MCContext *Ctx = new MCContext(*MAI, tai);
assert(Ctx && "Unable to create MCContext!");
// Set up disassembler.
const MCDisassembler *DisAsm = TheTarget->createMCDisassembler();
assert(DisAsm && "Unable to create disassembler!");
// Set up the instruction printer.
int AsmPrinterVariant = MAI->getAssemblerDialect();
MCInstPrinter *IP = TheTarget->createMCInstPrinter(*TM, AsmPrinterVariant,
*MAI);
assert(IP && "Unable to create instruction printer!");
LLVMDisasmContext *DC = new LLVMDisasmContext(TripleName, DisInfo, TagType,
GetOpInfo, SymbolLookUp,
TheTarget, MAI, TM, tai, Ctx,
DisAsm, IP);
assert(DC && "Allocation failure!");
return DC;
}
//
// LLVMDisasmDispose() disposes of the disassembler specified by the context.
//
void LLVMDisasmDispose(LLVMDisasmContextRef DCR){
LLVMDisasmContext *DC = (LLVMDisasmContext *)DCR;
delete DC;
}
namespace {
//
// The memory object created by LLVMDisasmInstruction().
//
class DisasmMemoryObject : public MemoryObject {
private:
uint8_t *Bytes;
uint64_t Size;
uint64_t BasePC;
public:
DisasmMemoryObject(uint8_t *bytes, uint64_t size, uint64_t basePC) :
Bytes(bytes), Size(size), BasePC(basePC) {}
uint64_t getBase() const { return BasePC; }
uint64_t getExtent() const { return Size; }
int readByte(uint64_t Addr, uint8_t *Byte) const {
if (Addr - BasePC >= Size)
return -1;
*Byte = Bytes[Addr - BasePC];
return 0;
}
};
} // namespace
//
// LLVMDisasmInstruction() disassmbles a single instruction using the
// disassembler context specified in the parameter DC. The bytes of the
// instuction are specified in the parameter Bytes, and contains at least
// BytesSize number of bytes. The instruction is at the address specified by
// the PC parameter. If a valid instruction can be disassembled its string is
// returned indirectly in OutString which whos size is specified in the
// parameter OutStringSize. This function returns the number of bytes in the
// instruction or zero if there was no valid instruction. If this function
// returns zero the caller will have to pick how many bytes they want to step
// over by printing a .byte, .long etc. to continue.
//
size_t LLVMDisasmInstruction(LLVMDisasmContextRef DCR, uint8_t *Bytes,
uint64_t BytesSize, uint64_t PC, char *OutString,
size_t OutStringSize){
LLVMDisasmContext *DC = (LLVMDisasmContext *)DCR;
// Wrap the pointer to the Bytes, BytesSize and PC in a MemoryObject.
DisasmMemoryObject MemoryObject(Bytes, BytesSize, PC);
uint64_t Size;
MCInst Inst;
const MCDisassembler *DisAsm = DC->getDisAsm();
MCInstPrinter *IP = DC->getIP();
if (!DisAsm->getInstruction(Inst, Size, MemoryObject, PC, /*REMOVE*/ nulls()))
return 0;
std::string InsnStr;
raw_string_ostream OS(InsnStr);
raw_ostream &Out = OS;
IP->printInst(&Inst, Out);
std::string p;
p = OS.str();
snprintf(OutString, OutStringSize, "%s", p.c_str());
return Size;
}
#ifdef __cplusplus
}
#endif // __cplusplus

90
llvm/lib/MC/MCDisassembler/Disassembler.h
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//===------------- 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.
//
//===----------------------------------------------------------------------===//
#include "llvm-c/Disassembler.h"
#include <string>
#include "llvm/ADT/OwningPtr.h"
namespace llvm {
class TargetAsmInfo;
class MCContext;
class MCAsmInfo;
class MCDisassembler;
class MCInstPrinter;
class Target;
class TargetMachine;
//
// 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 target machine instance.
llvm::OwningPtr<llvm::TargetMachine> TM;
// The disassembler for the target architecture.
// FIXME: using llvm::OwningPtr<const llvm::TargetAsmInfo> causes a malloc
// error when this LLVMDisasmContext is deleted.
const TargetAsmInfo *Tai;
// 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:
LLVMDisasmContext(std::string tripleName, void *disInfo, int tagType,
LLVMOpInfoCallback getOpInfo,
LLVMSymbolLookupCallback symbolLookUp,
const Target *theTarget, const MCAsmInfo *mAI,
llvm::TargetMachine *tM, const TargetAsmInfo *tai,
llvm::MCContext *ctx, const MCDisassembler *disAsm,
MCInstPrinter *iP) : TripleName(tripleName),
DisInfo(disInfo), TagType(tagType), GetOpInfo(getOpInfo),
SymbolLookUp(symbolLookUp), TheTarget(theTarget), Tai(tai) {
TM.reset(tM);
MAI.reset(mAI);
Ctx.reset(ctx);
DisAsm.reset(disAsm);
IP.reset(iP);
}
const MCDisassembler *getDisAsm() const { return DisAsm.get(); }
MCInstPrinter *getIP() { return IP.get(); }
};
} // namespace llvm