//
//===----------------------------------------------------------------------===//
+#include "llvm/MC/MCParser/MCAsmLexer.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCCodeEmitter.h"
+#include "llvm/MC/MCInstPrinter.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/ADT/OwningPtr.h"
-#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/System/Signals.h"
#include "llvm/Target/TargetAsmParser.h"
+#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetRegistry.h"
+#include "llvm/Target/TargetMachine.h" // FIXME.
#include "llvm/Target/TargetSelect.h"
#include "AsmParser.h"
+#include "Disassembler.h"
using namespace llvm;
static cl::opt<std::string>
OutputFilename("o", cl::desc("Output filename"),
cl::value_desc("filename"));
+static cl::opt<bool>
+ShowEncoding("show-encoding", cl::desc("Show instruction encodings"));
+
+static cl::opt<unsigned>
+OutputAsmVariant("output-asm-variant",
+ cl::desc("Syntax variant to use for output printing"));
+
enum OutputFileType {
OFT_AssemblyFile,
OFT_ObjectFile
cl::value_desc("directory"), cl::Prefix);
static cl::opt<std::string>
-TripleName("triple", cl::desc("Target triple to assemble for,"
- "see -version for available targets"),
- cl::init(LLVM_HOSTTRIPLE));
+TripleName("triple", cl::desc("Target triple to assemble for, "
+ "see -version for available targets"),
+ cl::init(LLVM_HOSTTRIPLE));
enum ActionType {
AC_AsLex,
- AC_Assemble
+ AC_Assemble,
+ AC_Disassemble
};
static cl::opt<ActionType>
"Lex tokens from a .s file"),
clEnumValN(AC_Assemble, "assemble",
"Assemble a .s file (default)"),
+ clEnumValN(AC_Disassemble, "disassemble",
+ "Disassemble strings of hex bytes"),
clEnumValEnd));
+static const Target *GetTarget(const char *ProgName) {
+ // Get the target specific parser.
+ std::string Error;
+ const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);
+ if (TheTarget)
+ return TheTarget;
+
+ errs() << ProgName << ": error: unable to get target for '" << TripleName
+ << "', see --version and --triple.\n";
+ return 0;
+}
+
static int AsLexInput(const char *ProgName) {
std::string ErrorMessage;
MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFilename,
// it later.
SrcMgr.setIncludeDirs(IncludeDirs);
- AsmLexer Lexer(SrcMgr);
+ const Target *TheTarget = GetTarget(ProgName);
+ if (!TheTarget)
+ return 1;
+
+ const MCAsmInfo *MAI = TheTarget->createAsmInfo(TripleName);
+ assert(MAI && "Unable to create target asm info!");
+
+ AsmLexer Lexer(*MAI);
bool Error = false;
while (Lexer.Lex().isNot(AsmToken::Eof)) {
switch (Lexer.getKind()) {
default:
- Lexer.PrintMessage(Lexer.getLoc(), "unknown token", "warning");
+ SrcMgr.PrintMessage(Lexer.getLoc(), "unknown token", "warning");
Error = true;
break;
case AsmToken::Error:
case AsmToken::Identifier:
outs() << "identifier: " << Lexer.getTok().getString() << '\n';
break;
- case AsmToken::Register:
- outs() << "register: " << Lexer.getTok().getString() << '\n';
- break;
case AsmToken::String:
outs() << "string: " << Lexer.getTok().getString() << '\n';
break;
return Error;
}
-static const Target *GetTarget(const char *ProgName) {
- // Get the target specific parser.
- std::string Error;
- const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);
- if (TheTarget)
- return TheTarget;
-
- errs() << ProgName << ": error: unable to get target for '" << TripleName
- << "', see --version and --triple.\n";
- return 0;
-}
-
static formatted_raw_ostream *GetOutputStream() {
if (OutputFilename == "")
OutputFilename = "-";
return 1;
}
- OwningPtr<AsmPrinter> AP;
+ OwningPtr<MCInstPrinter> IP;
OwningPtr<MCCodeEmitter> CE;
OwningPtr<MCStreamer> Str;
- if (FileType == OFT_AssemblyFile) {
- const MCAsmInfo *TAI = TheTarget->createAsmInfo(TripleName);
- assert(TAI && "Unable to create target asm info!");
+ const MCAsmInfo *MAI = TheTarget->createAsmInfo(TripleName);
+ assert(MAI && "Unable to create target asm info!");
- AP.reset(TheTarget->createAsmPrinter(*Out, *TM, TAI, true));
- CE.reset(TheTarget->createCodeEmitter(*TM));
- Str.reset(createAsmStreamer(Ctx, *Out, *TAI, AP.get(), CE.get()));
+ if (FileType == OFT_AssemblyFile) {
+ IP.reset(TheTarget->createMCInstPrinter(OutputAsmVariant, *MAI, *Out));
+ if (ShowEncoding)
+ CE.reset(TheTarget->createCodeEmitter(*TM));
+ Str.reset(createAsmStreamer(Ctx, *Out, *MAI,
+ TM->getTargetData()->isLittleEndian(),
+ IP.get(), CE.get()));
} else {
assert(FileType == OFT_ObjectFile && "Invalid file type!");
- Str.reset(createMachOStreamer(Ctx, *Out));
+ CE.reset(TheTarget->createCodeEmitter(*TM));
+ Str.reset(createMachOStreamer(Ctx, *Out, CE.get()));
}
- AsmParser Parser(SrcMgr, Ctx, *Str.get());
+ AsmParser Parser(SrcMgr, Ctx, *Str.get(), *MAI);
OwningPtr<TargetAsmParser> TAP(TheTarget->createAsmParser(Parser));
if (!TAP) {
errs() << ProgName
delete Out;
return Res;
-}
+}
+
+static int DisassembleInput(const char *ProgName) {
+ std::string Error;
+ const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);
+ if (TheTarget == 0) {
+ errs() << ProgName << ": error: unable to get target for '" << TripleName
+ << "', see --version and --triple.\n";
+ return 0;
+ }
+
+ std::string ErrorMessage;
+
+ MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFilename,
+ &ErrorMessage);
+
+ if (Buffer == 0) {
+ errs() << ProgName << ": ";
+ if (ErrorMessage.size())
+ errs() << ErrorMessage << "\n";
+ else
+ errs() << "input file didn't read correctly.\n";
+ return 1;
+ }
+
+ return Disassembler::disassemble(*TheTarget, TripleName, *Buffer);
+}
int main(int argc, char **argv) {
llvm::InitializeAllTargets();
llvm::InitializeAllAsmPrinters();
llvm::InitializeAllAsmParsers();
+ llvm::InitializeAllDisassemblers();
cl::ParseCommandLineOptions(argc, argv, "llvm machine code playground\n");
return AsLexInput(argv[0]);
case AC_Assemble:
return AssembleInput(argv[0]);
+ case AC_Disassemble:
+ return DisassembleInput(argv[0]);
}
return 0;
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