//
//===----------------------------------------------------------------------===//
+#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>
cl::value_desc("filename"));
static cl::opt<bool>
-Force("f", cl::desc("Overwrite output files"));
+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
+};
+static cl::opt<OutputFileType>
+FileType("filetype", cl::init(OFT_AssemblyFile),
+ cl::desc("Choose an output file type:"),
+ cl::values(
+ clEnumValN(OFT_AssemblyFile, "asm",
+ "Emit an assembly ('.s') file"),
+ clEnumValN(OFT_ObjectFile, "obj",
+ "Emit a native object ('.o') file"),
+ clEnumValEnd));
+
+static cl::opt<bool>
+Force("f", cl::desc("Enable binary output on terminals"));
static cl::list<std::string>
IncludeDirs("I", cl::desc("Directory of include files"),
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 &fouts();
+ if (OutputFilename == "")
+ OutputFilename = "-";
// Make sure that the Out file gets unlinked from the disk if we get a
- // SIGINT
- sys::RemoveFileOnSignal(sys::Path(OutputFilename));
+ // SIGINT.
+ if (OutputFilename != "-")
+ sys::RemoveFileOnSignal(sys::Path(OutputFilename));
std::string Err;
- raw_fd_ostream *Out = new raw_fd_ostream(OutputFilename.c_str(),
- /*Binary=*/false, Force, Err);
+ raw_fd_ostream *Out = new raw_fd_ostream(OutputFilename.c_str(), Err,
+ raw_fd_ostream::F_Binary);
if (!Err.empty()) {
errs() << Err << '\n';
- if (!Force)
- errs() << "Use -f command line argument to force output\n";
delete Out;
return 0;
}
return 1;
}
- const TargetAsmInfo *TAI = TheTarget->createAsmInfo(TripleName);
- assert(TAI && "Unable to create target asm info!");
-
- OwningPtr<AsmPrinter> AP(TheTarget->createAsmPrinter(*Out, *TM, TAI, true));
- OwningPtr<MCStreamer> Str(createAsmStreamer(Ctx, *Out, *TAI, AP.get()));
-
- // FIXME: Target hook & command line option for initial section.
- Str.get()->SwitchSection(MCSectionMachO::Create("__TEXT","__text",
- MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
- 0, SectionKind::getText(),
- Ctx));
+ OwningPtr<MCInstPrinter> IP;
+ OwningPtr<MCCodeEmitter> CE;
+ OwningPtr<MCStreamer> Str;
+
+ const MCAsmInfo *MAI = TheTarget->createAsmInfo(TripleName);
+ assert(MAI && "Unable to create target asm info!");
+
+ 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!");
+ 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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