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-rw-r--r--tools/llvm-mc/llvm-mc.cpp235
1 files changed, 179 insertions, 56 deletions
diff --git a/tools/llvm-mc/llvm-mc.cpp b/tools/llvm-mc/llvm-mc.cpp
index b52edd1ed4346..329efe92329fb 100644
--- a/tools/llvm-mc/llvm-mc.cpp
+++ b/tools/llvm-mc/llvm-mc.cpp
@@ -12,16 +12,25 @@
//
//===----------------------------------------------------------------------===//
+#include "llvm/MC/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/Support/CommandLine.h"
+#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/System/Signals.h"
+#include "llvm/Target/TargetAsmParser.h"
+#include "llvm/Target/TargetRegistry.h"
+#include "llvm/Target/TargetMachine.h" // FIXME.
+#include "llvm/Target/TargetSelect.h"
#include "AsmParser.h"
using namespace llvm;
@@ -32,10 +41,39 @@ 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
+};
+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));
+
enum ActionType {
AC_AsLex,
AC_Assemble
@@ -50,6 +88,18 @@ Action(cl::desc("Action to perform:"),
"Assemble a .s file (default)"),
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,
@@ -72,78 +122,103 @@ static int AsLexInput(const char *ProgName) {
// 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(SrcMgr, *MAI);
bool Error = false;
- asmtok::TokKind Tok = Lexer.Lex();
- while (Tok != asmtok::Eof) {
- switch (Tok) {
+ while (Lexer.Lex().isNot(AsmToken::Eof)) {
+ switch (Lexer.getKind()) {
default:
Lexer.PrintMessage(Lexer.getLoc(), "unknown token", "warning");
Error = true;
break;
- case asmtok::Error:
+ case AsmToken::Error:
Error = true; // error already printed.
break;
- case asmtok::Identifier:
- outs() << "identifier: " << Lexer.getCurStrVal() << '\n';
- break;
- case asmtok::Register:
- outs() << "register: " << Lexer.getCurStrVal() << '\n';
+ case AsmToken::Identifier:
+ outs() << "identifier: " << Lexer.getTok().getString() << '\n';
break;
- case asmtok::String:
- outs() << "string: " << Lexer.getCurStrVal() << '\n';
+ case AsmToken::String:
+ outs() << "string: " << Lexer.getTok().getString() << '\n';
break;
- case asmtok::IntVal:
- outs() << "int: " << Lexer.getCurIntVal() << '\n';
+ case AsmToken::Integer:
+ outs() << "int: " << Lexer.getTok().getString() << '\n';
break;
- case asmtok::Amp: outs() << "Amp\n"; break;
- case asmtok::AmpAmp: outs() << "AmpAmp\n"; break;
- case asmtok::Caret: outs() << "Caret\n"; break;
- case asmtok::Colon: outs() << "Colon\n"; break;
- case asmtok::Comma: outs() << "Comma\n"; break;
- case asmtok::Dollar: outs() << "Dollar\n"; break;
- case asmtok::EndOfStatement: outs() << "EndOfStatement\n"; break;
- case asmtok::Eof: outs() << "Eof\n"; break;
- case asmtok::Equal: outs() << "Equal\n"; break;
- case asmtok::EqualEqual: outs() << "EqualEqual\n"; break;
- case asmtok::Exclaim: outs() << "Exclaim\n"; break;
- case asmtok::ExclaimEqual: outs() << "ExclaimEqual\n"; break;
- case asmtok::Greater: outs() << "Greater\n"; break;
- case asmtok::GreaterEqual: outs() << "GreaterEqual\n"; break;
- case asmtok::GreaterGreater: outs() << "GreaterGreater\n"; break;
- case asmtok::LParen: outs() << "LParen\n"; break;
- case asmtok::Less: outs() << "Less\n"; break;
- case asmtok::LessEqual: outs() << "LessEqual\n"; break;
- case asmtok::LessGreater: outs() << "LessGreater\n"; break;
- case asmtok::LessLess: outs() << "LessLess\n"; break;
- case asmtok::Minus: outs() << "Minus\n"; break;
- case asmtok::Percent: outs() << "Percent\n"; break;
- case asmtok::Pipe: outs() << "Pipe\n"; break;
- case asmtok::PipePipe: outs() << "PipePipe\n"; break;
- case asmtok::Plus: outs() << "Plus\n"; break;
- case asmtok::RParen: outs() << "RParen\n"; break;
- case asmtok::Slash: outs() << "Slash\n"; break;
- case asmtok::Star: outs() << "Star\n"; break;
- case asmtok::Tilde: outs() << "Tilde\n"; break;
+ case AsmToken::Amp: outs() << "Amp\n"; break;
+ case AsmToken::AmpAmp: outs() << "AmpAmp\n"; break;
+ case AsmToken::Caret: outs() << "Caret\n"; break;
+ case AsmToken::Colon: outs() << "Colon\n"; break;
+ case AsmToken::Comma: outs() << "Comma\n"; break;
+ case AsmToken::Dollar: outs() << "Dollar\n"; break;
+ case AsmToken::EndOfStatement: outs() << "EndOfStatement\n"; break;
+ case AsmToken::Eof: outs() << "Eof\n"; break;
+ case AsmToken::Equal: outs() << "Equal\n"; break;
+ case AsmToken::EqualEqual: outs() << "EqualEqual\n"; break;
+ case AsmToken::Exclaim: outs() << "Exclaim\n"; break;
+ case AsmToken::ExclaimEqual: outs() << "ExclaimEqual\n"; break;
+ case AsmToken::Greater: outs() << "Greater\n"; break;
+ case AsmToken::GreaterEqual: outs() << "GreaterEqual\n"; break;
+ case AsmToken::GreaterGreater: outs() << "GreaterGreater\n"; break;
+ case AsmToken::LParen: outs() << "LParen\n"; break;
+ case AsmToken::Less: outs() << "Less\n"; break;
+ case AsmToken::LessEqual: outs() << "LessEqual\n"; break;
+ case AsmToken::LessGreater: outs() << "LessGreater\n"; break;
+ case AsmToken::LessLess: outs() << "LessLess\n"; break;
+ case AsmToken::Minus: outs() << "Minus\n"; break;
+ case AsmToken::Percent: outs() << "Percent\n"; break;
+ case AsmToken::Pipe: outs() << "Pipe\n"; break;
+ case AsmToken::PipePipe: outs() << "PipePipe\n"; break;
+ case AsmToken::Plus: outs() << "Plus\n"; break;
+ case AsmToken::RParen: outs() << "RParen\n"; break;
+ case AsmToken::Slash: outs() << "Slash\n"; break;
+ case AsmToken::Star: outs() << "Star\n"; break;
+ case AsmToken::Tilde: outs() << "Tilde\n"; break;
}
-
- Tok = Lexer.Lex();
}
return Error;
}
+static formatted_raw_ostream *GetOutputStream() {
+ if (OutputFilename == "")
+ OutputFilename = "-";
+
+ // Make sure that the Out file gets unlinked from the disk if we get a
+ // SIGINT.
+ if (OutputFilename != "-")
+ sys::RemoveFileOnSignal(sys::Path(OutputFilename));
+
+ std::string Err;
+ raw_fd_ostream *Out = new raw_fd_ostream(OutputFilename.c_str(), Err,
+ raw_fd_ostream::F_Binary);
+ if (!Err.empty()) {
+ errs() << Err << '\n';
+ delete Out;
+ return 0;
+ }
+
+ return new formatted_raw_ostream(*Out, formatted_raw_ostream::DELETE_STREAM);
+}
+
static int AssembleInput(const char *ProgName) {
- std::string ErrorMessage;
- MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFilename,
- &ErrorMessage);
+ const Target *TheTarget = GetTarget(ProgName);
+ if (!TheTarget)
+ return 1;
+
+ std::string Error;
+ MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFilename, &Error);
if (Buffer == 0) {
errs() << ProgName << ": ";
- if (ErrorMessage.size())
- errs() << ErrorMessage << "\n";
+ if (Error.size())
+ errs() << Error << "\n";
else
errs() << "input file didn't read correctly.\n";
return 1;
@@ -151,7 +226,7 @@ static int AssembleInput(const char *ProgName) {
SourceMgr SrcMgr;
- // Tell SrcMgr about this buffer, which is what TGParser will pick up.
+ // Tell SrcMgr about this buffer, which is what the parser will pick up.
SrcMgr.AddNewSourceBuffer(Buffer, SMLoc());
// Record the location of the include directories so that the lexer can find
@@ -159,13 +234,53 @@ static int AssembleInput(const char *ProgName) {
SrcMgr.setIncludeDirs(IncludeDirs);
MCContext Ctx;
- OwningPtr<MCStreamer> Str(createAsmStreamer(Ctx, outs()));
+ formatted_raw_ostream *Out = GetOutputStream();
+ if (!Out)
+ return 1;
+
+
+ // FIXME: We shouldn't need to do this (and link in codegen).
+ OwningPtr<TargetMachine> TM(TheTarget->createTargetMachine(TripleName, ""));
+
+ if (!TM) {
+ errs() << ProgName << ": error: could not create target for triple '"
+ << TripleName << "'.\n";
+ return 1;
+ }
+
+ OwningPtr<MCInstPrinter> IP;
+ OwningPtr<MCCodeEmitter> CE;
+ OwningPtr<MCStreamer> Str;
+
+ const MCAsmInfo *MAI = TheTarget->createAsmInfo(TripleName);
+ assert(MAI && "Unable to create target asm info!");
- // FIXME: Target hook & command line option for initial section.
- Str.get()->SwitchSection(Ctx.GetSection("__TEXT,__text,regular,pure_instructions"));
+ if (FileType == OFT_AssemblyFile) {
+ IP.reset(TheTarget->createMCInstPrinter(OutputAsmVariant, *MAI, *Out));
+ if (ShowEncoding)
+ CE.reset(TheTarget->createCodeEmitter(*TM));
+ Str.reset(createAsmStreamer(Ctx, *Out, *MAI, 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());
- return Parser.Run();
+ AsmParser Parser(SrcMgr, Ctx, *Str.get(), *MAI);
+ OwningPtr<TargetAsmParser> TAP(TheTarget->createAsmParser(Parser));
+ if (!TAP) {
+ errs() << ProgName
+ << ": error: this target does not support assembly parsing.\n";
+ return 1;
+ }
+
+ Parser.setTargetParser(*TAP.get());
+
+ int Res = Parser.Run();
+ if (Out != &fouts())
+ delete Out;
+
+ return Res;
}
@@ -174,6 +289,14 @@ int main(int argc, char **argv) {
sys::PrintStackTraceOnErrorSignal();
PrettyStackTraceProgram X(argc, argv);
llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
+
+ // 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();
+
cl::ParseCommandLineOptions(argc, argv, "llvm machine code playground\n");
switch (Action) {
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-25 09:21:24 +0000