mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 12:12:47 +01:00
d451ee255b
yesterday. This eliminates possible confusion about what exactly in this directory; the name is still short, though. llvm-svn: 95118
249 lines
8.9 KiB
C++
249 lines
8.9 KiB
C++
//===-EDDisassembler.h - LLVM Enhanced 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 Enhanced Disassembly library's
|
|
// disassembler class. The disassembler is responsible for vending individual
|
|
// instructions according to a given architecture and disassembly syntax.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef EDDisassembler_
|
|
#define EDDisassembler_
|
|
|
|
#include "EDInfo.inc"
|
|
|
|
#include "llvm-c/EnhancedDisassembly.h"
|
|
|
|
#include "llvm/ADT/OwningPtr.h"
|
|
#include "llvm/ADT/Triple.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
#include "llvm/System/Mutex.h"
|
|
|
|
#include <map>
|
|
#include <set>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
namespace llvm {
|
|
class AsmLexer;
|
|
class AsmToken;
|
|
class MCContext;
|
|
class MCAsmInfo;
|
|
class MCAsmLexer;
|
|
class AsmParser;
|
|
class TargetAsmLexer;
|
|
class TargetAsmParser;
|
|
class MCDisassembler;
|
|
class MCInstPrinter;
|
|
class MCInst;
|
|
class MCParsedAsmOperand;
|
|
class MCStreamer;
|
|
template <typename T> class SmallVectorImpl;
|
|
class SourceMgr;
|
|
class Target;
|
|
class TargetRegisterInfo;
|
|
}
|
|
|
|
/// EDDisassembler - Encapsulates a disassembler for a single architecture and
|
|
/// disassembly syntax. Also manages the static disassembler registry.
|
|
struct EDDisassembler {
|
|
////////////////////
|
|
// Static members //
|
|
////////////////////
|
|
|
|
/// CPUKey - Encapsulates the descriptor of an architecture/disassembly-syntax
|
|
/// pair
|
|
struct CPUKey {
|
|
/// The architecture type
|
|
llvm::Triple::ArchType Arch;
|
|
|
|
/// The assembly syntax
|
|
EDAssemblySyntax_t Syntax;
|
|
|
|
/// operator== - Equality operator
|
|
bool operator==(const CPUKey &key) const {
|
|
return (Arch == key.Arch &&
|
|
Syntax == key.Syntax);
|
|
}
|
|
|
|
/// operator< - Less-than operator
|
|
bool operator<(const CPUKey &key) const {
|
|
if(Arch > key.Arch)
|
|
return false;
|
|
if(Syntax >= key.Syntax)
|
|
return false;
|
|
return true;
|
|
}
|
|
};
|
|
|
|
typedef std::map<CPUKey, EDDisassembler*> DisassemblerMap_t;
|
|
|
|
/// True if the disassembler registry has been initialized; false if not
|
|
static bool sInitialized;
|
|
/// A map from disassembler specifications to disassemblers. Populated
|
|
/// lazily.
|
|
static DisassemblerMap_t sDisassemblers;
|
|
|
|
/// getDisassembler - Returns the specified disassemble, or NULL on failure
|
|
///
|
|
/// @arg arch - The desired architecture
|
|
/// @arg syntax - The desired disassembly syntax
|
|
static EDDisassembler *getDisassembler(llvm::Triple::ArchType arch,
|
|
EDAssemblySyntax_t syntax);
|
|
|
|
/// getDisassembler - Returns the disassembler for a given combination of
|
|
/// CPU type, CPU subtype, and assembly syntax, or NULL on failure
|
|
///
|
|
/// @arg str - The string representation of the architecture triple, e.g.,
|
|
/// "x86_64-apple-darwin"
|
|
/// @arg syntax - The disassembly syntax for the required disassembler
|
|
static EDDisassembler *getDisassembler(llvm::StringRef str,
|
|
EDAssemblySyntax_t syntax);
|
|
|
|
/// initialize - Initializes the disassembler registry and the LLVM backend
|
|
static void initialize();
|
|
|
|
////////////////////////
|
|
// Per-object members //
|
|
////////////////////////
|
|
|
|
/// True only if the object has been fully and successfully initialized
|
|
bool Valid;
|
|
|
|
/// The string that stores disassembler errors from the backend
|
|
std::string ErrorString;
|
|
/// The stream that wraps the ErrorString
|
|
llvm::raw_string_ostream ErrorStream;
|
|
|
|
/// The architecture/syntax pair for the current architecture
|
|
CPUKey Key;
|
|
/// The LLVM target corresponding to the disassembler
|
|
const llvm::Target *Tgt;
|
|
/// The assembly information for the target architecture
|
|
llvm::OwningPtr<const llvm::MCAsmInfo> AsmInfo;
|
|
/// The disassembler for the target architecture
|
|
llvm::OwningPtr<const llvm::MCDisassembler> Disassembler;
|
|
/// The output string for the instruction printer; must be guarded with
|
|
/// PrinterMutex
|
|
llvm::OwningPtr<std::string> InstString;
|
|
/// The output stream for the disassembler; must be guarded with
|
|
/// PrinterMutex
|
|
llvm::OwningPtr<llvm::raw_string_ostream> InstStream;
|
|
/// The instruction printer for the target architecture; must be guarded with
|
|
/// PrinterMutex when printing
|
|
llvm::OwningPtr<llvm::MCInstPrinter> InstPrinter;
|
|
/// The mutex that guards the instruction printer's printing functions, which
|
|
/// use a shared stream
|
|
llvm::sys::Mutex PrinterMutex;
|
|
/// The array of instruction information provided by the TableGen backend for
|
|
/// the target architecture
|
|
const InstInfo *InstInfos;
|
|
/// The target-specific lexer for use in tokenizing strings, in
|
|
/// target-independent and target-specific portions
|
|
llvm::OwningPtr<llvm::AsmLexer> GenericAsmLexer;
|
|
llvm::OwningPtr<llvm::TargetAsmLexer> SpecificAsmLexer;
|
|
/// The guard for the above
|
|
llvm::sys::Mutex ParserMutex;
|
|
/// The LLVM number used for the target disassembly syntax variant
|
|
int LLVMSyntaxVariant;
|
|
|
|
typedef std::vector<std::string> regvec_t;
|
|
typedef std::map<std::string, unsigned> regrmap_t;
|
|
|
|
/// A vector of registers for quick mapping from LLVM register IDs to names
|
|
regvec_t RegVec;
|
|
/// A map of registers for quick mapping from register names to LLVM IDs
|
|
regrmap_t RegRMap;
|
|
|
|
/// A set of register IDs for aliases of the stack pointer for the current
|
|
/// architecture
|
|
std::set<unsigned> stackPointers;
|
|
/// A set of register IDs for aliases of the program counter for the current
|
|
/// architecture
|
|
std::set<unsigned> programCounters;
|
|
|
|
/// Constructor - initializes a disassembler with all the necessary objects,
|
|
/// which come pre-allocated from the registry accessor function
|
|
///
|
|
/// @arg key - the architecture and disassembly syntax for the
|
|
/// disassembler
|
|
EDDisassembler(CPUKey& key);
|
|
|
|
/// valid - reports whether there was a failure in the constructor.
|
|
bool valid() {
|
|
return Valid;
|
|
}
|
|
|
|
~EDDisassembler();
|
|
|
|
/// createInst - creates and returns an instruction given a callback and
|
|
/// memory address, or NULL on failure
|
|
///
|
|
/// @arg byteReader - A callback function that provides machine code bytes
|
|
/// @arg address - The address of the first byte of the instruction,
|
|
/// suitable for passing to byteReader
|
|
/// @arg arg - An opaque argument for byteReader
|
|
EDInst *createInst(EDByteReaderCallback byteReader,
|
|
uint64_t address,
|
|
void *arg);
|
|
|
|
/// initMaps - initializes regVec and regRMap using the provided register
|
|
/// info
|
|
///
|
|
/// @arg registerInfo - the register information to use as a source
|
|
void initMaps(const llvm::TargetRegisterInfo ®isterInfo);
|
|
/// nameWithRegisterID - Returns the name (owned by the EDDisassembler) of a
|
|
/// register for a given register ID, or NULL on failure
|
|
///
|
|
/// @arg registerID - the ID of the register to be queried
|
|
const char *nameWithRegisterID(unsigned registerID) const;
|
|
/// registerIDWithName - Returns the ID of a register for a given register
|
|
/// name, or (unsigned)-1 on failure
|
|
///
|
|
/// @arg name - The name of the register
|
|
unsigned registerIDWithName(const char *name) const;
|
|
|
|
/// registerIsStackPointer - reports whether a register ID is an alias for the
|
|
/// stack pointer register
|
|
///
|
|
/// @arg registerID - The LLVM register ID
|
|
bool registerIsStackPointer(unsigned registerID);
|
|
/// registerIsStackPointer - reports whether a register ID is an alias for the
|
|
/// stack pointer register
|
|
///
|
|
/// @arg registerID - The LLVM register ID
|
|
bool registerIsProgramCounter(unsigned registerID);
|
|
|
|
/// printInst - prints an MCInst to a string, returning 0 on success, or -1
|
|
/// otherwise
|
|
///
|
|
/// @arg str - A reference to a string which is filled in with the string
|
|
/// representation of the instruction
|
|
/// @arg inst - A reference to the MCInst to be printed
|
|
int printInst(std::string& str,
|
|
llvm::MCInst& inst);
|
|
|
|
/// parseInst - extracts operands and tokens from a string for use in
|
|
/// tokenizing the string. Returns 0 on success, or -1 otherwise.
|
|
///
|
|
/// @arg operands - A reference to a vector that will be filled in with the
|
|
/// parsed operands
|
|
/// @arg tokens - A reference to a vector that will be filled in with the
|
|
/// tokens
|
|
/// @arg str - The string representation of the instruction
|
|
int parseInst(llvm::SmallVectorImpl<llvm::MCParsedAsmOperand*> &operands,
|
|
llvm::SmallVectorImpl<llvm::AsmToken> &tokens,
|
|
const std::string &str);
|
|
|
|
/// llvmSyntaxVariant - returns the LLVM syntax variant for this disassembler
|
|
int llvmSyntaxVariant() const;
|
|
};
|
|
|
|
#endif
|