#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringMap.h"
-#include "llvm/ADT/StringSwitch.h"
#include "llvm/ADT/Twine.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCDwarf.h"
#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCInstPrinter.h"
+#include "llvm/MC/MCInstrInfo.h"
#include "llvm/MC/MCParser/AsmCond.h"
#include "llvm/MC/MCParser/AsmLexer.h"
#include "llvm/MC/MCParser/MCAsmParser.h"
#include "llvm/MC/MCParser/MCParsedAsmOperand.h"
+#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
-#include "llvm/MC/MCDwarf.h"
+#include "llvm/MC/MCTargetAsmParser.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/MathExtras.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/raw_ostream.h"
-#include "llvm/Target/TargetAsmParser.h"
+#include <cctype>
+#include <set>
+#include <string>
#include <vector>
using namespace llvm;
+static cl::opt<bool>
+FatalAssemblerWarnings("fatal-assembler-warnings",
+ cl::desc("Consider warnings as error"));
+
+MCAsmParserSemaCallback::~MCAsmParserSemaCallback() {}
+
namespace {
/// \brief Helper class for tracking macro definitions.
+typedef std::vector<AsmToken> MacroArgument;
+typedef std::vector<MacroArgument> MacroArguments;
+typedef std::pair<StringRef, MacroArgument> MacroParameter;
+typedef std::vector<MacroParameter> MacroParameters;
+
struct Macro {
StringRef Name;
StringRef Body;
+ MacroParameters Parameters;
public:
- Macro(StringRef N, StringRef B) : Name(N), Body(B) {}
+ Macro(StringRef N, StringRef B, const MacroParameters &P) :
+ Name(N), Body(B), Parameters(P) {}
};
/// \brief Helper class for storing information about an active macro
/// The location of the instantiation.
SMLoc InstantiationLoc;
+ /// The buffer where parsing should resume upon instantiation completion.
+ int ExitBuffer;
+
/// The location where parsing should resume upon instantiation completion.
SMLoc ExitLoc;
public:
- MacroInstantiation(const Macro *M, SMLoc IL, SMLoc EL,
- const std::vector<std::vector<AsmToken> > &A);
+ MacroInstantiation(const Macro *M, SMLoc IL, int EB, SMLoc EL,
+ MemoryBuffer *I);
+};
+
+//struct AsmRewrite;
+struct ParseStatementInfo {
+ /// ParsedOperands - The parsed operands from the last parsed statement.
+ SmallVector<MCParsedAsmOperand*, 8> ParsedOperands;
+
+ /// Opcode - The opcode from the last parsed instruction.
+ unsigned Opcode;
+
+ /// Error - Was there an error parsing the inline assembly?
+ bool ParseError;
+
+ SmallVectorImpl<AsmRewrite> *AsmRewrites;
+
+ ParseStatementInfo() : Opcode(~0U), ParseError(false), AsmRewrites(0) {}
+ ParseStatementInfo(SmallVectorImpl<AsmRewrite> *rewrites)
+ : Opcode(~0), ParseError(false), AsmRewrites(rewrites) {}
+
+ ~ParseStatementInfo() {
+ // Free any parsed operands.
+ for (unsigned i = 0, e = ParsedOperands.size(); i != e; ++i)
+ delete ParsedOperands[i];
+ ParsedOperands.clear();
+ }
};
/// \brief The concrete assembly parser instance.
class AsmParser : public MCAsmParser {
friend class GenericAsmParser;
- AsmParser(const AsmParser &); // DO NOT IMPLEMENT
- void operator=(const AsmParser &); // DO NOT IMPLEMENT
+ AsmParser(const AsmParser &) LLVM_DELETED_FUNCTION;
+ void operator=(const AsmParser &) LLVM_DELETED_FUNCTION;
private:
AsmLexer Lexer;
MCContext &Ctx;
MCStreamer &Out;
+ const MCAsmInfo &MAI;
SourceMgr &SrcMgr;
+ SourceMgr::DiagHandlerTy SavedDiagHandler;
+ void *SavedDiagContext;
MCAsmParserExtension *GenericParser;
MCAsmParserExtension *PlatformParser;
/// Flag tracking whether any errors have been encountered.
unsigned HadError : 1;
+ /// The values from the last parsed cpp hash file line comment if any.
+ StringRef CppHashFilename;
+ int64_t CppHashLineNumber;
+ SMLoc CppHashLoc;
+ int CppHashBuf;
+
+ /// AssemblerDialect. ~OU means unset value and use value provided by MAI.
+ unsigned AssemblerDialect;
+
+ /// IsDarwin - is Darwin compatibility enabled?
+ bool IsDarwin;
+
+ /// ParsingInlineAsm - Are we parsing ms-style inline assembly?
+ bool ParsingInlineAsm;
+
public:
- AsmParser(const Target &T, SourceMgr &SM, MCContext &Ctx, MCStreamer &Out,
+ AsmParser(SourceMgr &SM, MCContext &Ctx, MCStreamer &Out,
const MCAsmInfo &MAI);
- ~AsmParser();
+ virtual ~AsmParser();
virtual bool Run(bool NoInitialTextSection, bool NoFinalize = false);
- void AddDirectiveHandler(MCAsmParserExtension *Object,
- StringRef Directive,
- DirectiveHandler Handler) {
+ virtual void AddDirectiveHandler(MCAsmParserExtension *Object,
+ StringRef Directive,
+ DirectiveHandler Handler) {
DirectiveMap[Directive] = std::make_pair(Object, Handler);
}
virtual MCAsmLexer &getLexer() { return Lexer; }
virtual MCContext &getContext() { return Ctx; }
virtual MCStreamer &getStreamer() { return Out; }
+ virtual unsigned getAssemblerDialect() {
+ if (AssemblerDialect == ~0U)
+ return MAI.getAssemblerDialect();
+ else
+ return AssemblerDialect;
+ }
+ virtual void setAssemblerDialect(unsigned i) {
+ AssemblerDialect = i;
+ }
+
+ virtual bool Warning(SMLoc L, const Twine &Msg,
+ ArrayRef<SMRange> Ranges = ArrayRef<SMRange>());
+ virtual bool Error(SMLoc L, const Twine &Msg,
+ ArrayRef<SMRange> Ranges = ArrayRef<SMRange>());
+
+ virtual const AsmToken &Lex();
- virtual void Warning(SMLoc L, const Twine &Meg);
- virtual bool Error(SMLoc L, const Twine &Msg);
+ void setParsingInlineAsm(bool V) { ParsingInlineAsm = V; }
+ bool isParsingInlineAsm() { return ParsingInlineAsm; }
- const AsmToken &Lex();
+ bool ParseMSInlineAsm(void *AsmLoc, std::string &AsmString,
+ unsigned &NumOutputs, unsigned &NumInputs,
+ SmallVectorImpl<std::pair<void *,bool> > &OpDecls,
+ SmallVectorImpl<std::string> &Constraints,
+ SmallVectorImpl<std::string> &Clobbers,
+ const MCInstrInfo *MII,
+ const MCInstPrinter *IP,
+ MCAsmParserSemaCallback &SI);
bool ParseExpression(const MCExpr *&Res);
virtual bool ParseExpression(const MCExpr *&Res, SMLoc &EndLoc);
private:
void CheckForValidSection();
- bool ParseStatement();
+ bool ParseStatement(ParseStatementInfo &Info);
+ void EatToEndOfLine();
+ bool ParseCppHashLineFilenameComment(const SMLoc &L);
bool HandleMacroEntry(StringRef Name, SMLoc NameLoc, const Macro *M);
+ bool expandMacro(raw_svector_ostream &OS, StringRef Body,
+ const MacroParameters &Parameters,
+ const MacroArguments &A,
+ const SMLoc &L);
void HandleMacroExit();
void PrintMacroInstantiations();
- void PrintMessage(SMLoc Loc, const Twine &Msg, const char *Type) const {
- SrcMgr.PrintMessage(Loc, Msg, Type);
+ void PrintMessage(SMLoc Loc, SourceMgr::DiagKind Kind, const Twine &Msg,
+ ArrayRef<SMRange> Ranges = ArrayRef<SMRange>()) const {
+ SrcMgr.PrintMessage(Loc, Kind, Msg, Ranges);
}
+ static void DiagHandler(const SMDiagnostic &Diag, void *Context);
/// EnterIncludeFile - Enter the specified file. This returns true on failure.
bool EnterIncludeFile(const std::string &Filename);
+ /// ProcessIncbinFile - Process the specified file for the .incbin directive.
+ /// This returns true on failure.
+ bool ProcessIncbinFile(const std::string &Filename);
- /// \brief Reset the current lexer position to that given by \arg Loc. The
+ /// \brief Reset the current lexer position to that given by \p Loc. The
/// current token is not set; clients should ensure Lex() is called
/// subsequently.
- void JumpToLoc(SMLoc Loc);
+ ///
+ /// \param InBuffer If not -1, should be the known buffer id that contains the
+ /// location.
+ void JumpToLoc(SMLoc Loc, int InBuffer=-1);
- void EatToEndOfStatement();
+ virtual void EatToEndOfStatement();
+
+ bool ParseMacroArgument(MacroArgument &MA,
+ AsmToken::TokenKind &ArgumentDelimiter);
+ bool ParseMacroArguments(const Macro *M, MacroArguments &A);
/// \brief Parse up to the end of statement and a return the contents from the
/// current token until the end of the statement; the current token on exit
/// will be either the EndOfStatement or EOF.
- StringRef ParseStringToEndOfStatement();
+ virtual StringRef ParseStringToEndOfStatement();
+
+ /// \brief Parse until the end of a statement or a comma is encountered,
+ /// return the contents from the current token up to the end or comma.
+ StringRef ParseStringToComma();
- bool ParseAssignment(StringRef Name);
+ bool ParseAssignment(StringRef Name, bool allow_redef,
+ bool NoDeadStrip = false);
bool ParsePrimaryExpr(const MCExpr *&Res, SMLoc &EndLoc);
bool ParseBinOpRHS(unsigned Precedence, const MCExpr *&Res, SMLoc &EndLoc);
bool ParseParenExpr(const MCExpr *&Res, SMLoc &EndLoc);
+ bool ParseBracketExpr(const MCExpr *&Res, SMLoc &EndLoc);
/// ParseIdentifier - Parse an identifier or string (as a quoted identifier)
- /// and set \arg Res to the identifier contents.
- bool ParseIdentifier(StringRef &Res);
+ /// and set \p Res to the identifier contents.
+ virtual bool ParseIdentifier(StringRef &Res);
// Directive Parsing.
- // ".ascii", ".asciiz", ".string"
+ enum DirectiveKind {
+ DK_NO_DIRECTIVE, // Placeholder
+ DK_SET, DK_EQU, DK_EQUIV, DK_ASCII, DK_ASCIZ, DK_STRING, DK_BYTE, DK_SHORT,
+ DK_VALUE, DK_2BYTE, DK_LONG, DK_INT, DK_4BYTE, DK_QUAD, DK_8BYTE, DK_SINGLE,
+ DK_FLOAT, DK_DOUBLE, DK_ALIGN, DK_ALIGN32, DK_BALIGN, DK_BALIGNW,
+ DK_BALIGNL, DK_P2ALIGN, DK_P2ALIGNW, DK_P2ALIGNL, DK_ORG, DK_FILL, DK_ENDR,
+ DK_BUNDLE_ALIGN_MODE, DK_BUNDLE_LOCK, DK_BUNDLE_UNLOCK,
+ DK_ZERO, DK_EXTERN, DK_GLOBL, DK_GLOBAL, DK_INDIRECT_SYMBOL,
+ DK_LAZY_REFERENCE, DK_NO_DEAD_STRIP, DK_SYMBOL_RESOLVER, DK_PRIVATE_EXTERN,
+ DK_REFERENCE, DK_WEAK_DEFINITION, DK_WEAK_REFERENCE,
+ DK_WEAK_DEF_CAN_BE_HIDDEN, DK_COMM, DK_COMMON, DK_LCOMM, DK_ABORT,
+ DK_INCLUDE, DK_INCBIN, DK_CODE16, DK_CODE16GCC, DK_REPT, DK_IRP, DK_IRPC,
+ DK_IF, DK_IFB, DK_IFNB, DK_IFC, DK_IFNC, DK_IFDEF, DK_IFNDEF, DK_IFNOTDEF,
+ DK_ELSEIF, DK_ELSE, DK_ENDIF
+ };
+
+ StringMap<DirectiveKind> DirectiveKindMapping;
+
+ // ".ascii", ".asciz", ".string"
bool ParseDirectiveAscii(StringRef IDVal, bool ZeroTerminated);
bool ParseDirectiveValue(unsigned Size); // ".byte", ".long", ...
bool ParseDirectiveRealValue(const fltSemantics &); // ".single", ...
bool ParseDirectiveFill(); // ".fill"
- bool ParseDirectiveSpace(); // ".space"
bool ParseDirectiveZero(); // ".zero"
- bool ParseDirectiveSet(StringRef IDVal); // ".set" or ".equ"
+ // ".set", ".equ", ".equiv"
+ bool ParseDirectiveSet(StringRef IDVal, bool allow_redef);
bool ParseDirectiveOrg(); // ".org"
// ".align{,32}", ".p2align{,w,l}"
bool ParseDirectiveAlign(bool IsPow2, unsigned ValueSize);
+ // ".bundle_align_mode"
+ bool ParseDirectiveBundleAlignMode();
+ // ".bundle_lock"
+ bool ParseDirectiveBundleLock();
+ // ".bundle_unlock"
+ bool ParseDirectiveBundleUnlock();
+
/// ParseDirectiveSymbolAttribute - Parse a directive like ".globl" which
/// accepts a single symbol (which should be a label or an external).
bool ParseDirectiveSymbolAttribute(MCSymbolAttr Attr);
bool ParseDirectiveAbort(); // ".abort"
bool ParseDirectiveInclude(); // ".include"
+ bool ParseDirectiveIncbin(); // ".incbin"
bool ParseDirectiveIf(SMLoc DirectiveLoc); // ".if"
+ // ".ifb" or ".ifnb", depending on ExpectBlank.
+ bool ParseDirectiveIfb(SMLoc DirectiveLoc, bool ExpectBlank);
+ // ".ifc" or ".ifnc", depending on ExpectEqual.
+ bool ParseDirectiveIfc(SMLoc DirectiveLoc, bool ExpectEqual);
+ // ".ifdef" or ".ifndef", depending on expect_defined
+ bool ParseDirectiveIfdef(SMLoc DirectiveLoc, bool expect_defined);
bool ParseDirectiveElseIf(SMLoc DirectiveLoc); // ".elseif"
bool ParseDirectiveElse(SMLoc DirectiveLoc); // ".else"
bool ParseDirectiveEndIf(SMLoc DirectiveLoc); // .endif
const MCExpr *ApplyModifierToExpr(const MCExpr *E,
MCSymbolRefExpr::VariantKind Variant);
+
+ // Macro-like directives
+ Macro *ParseMacroLikeBody(SMLoc DirectiveLoc);
+ void InstantiateMacroLikeBody(Macro *M, SMLoc DirectiveLoc,
+ raw_svector_ostream &OS);
+ bool ParseDirectiveRept(SMLoc DirectiveLoc); // ".rept"
+ bool ParseDirectiveIrp(SMLoc DirectiveLoc); // ".irp"
+ bool ParseDirectiveIrpc(SMLoc DirectiveLoc); // ".irpc"
+ bool ParseDirectiveEndr(SMLoc DirectiveLoc); // ".endr"
+
+ // "_emit"
+ bool ParseDirectiveEmit(SMLoc DirectiveLoc, ParseStatementInfo &Info);
+
+ void initializeDirectiveKindMapping();
};
-/// \brief Generic implementations of directive handling, etc. which is shared
-/// (or the default, at least) for all assembler parser.
+/// \brief Generic implementation of directive handling, etc. which is shared
+/// (or the default, at least) for all assembler parsers.
class GenericAsmParser : public MCAsmParserExtension {
template<bool (GenericAsmParser::*Handler)(StringRef, SMLoc)>
void AddDirectiveHandler(StringRef Directive) {
getParser().AddDirectiveHandler(this, Directive,
HandleDirective<GenericAsmParser, Handler>);
}
-
public:
GenericAsmParser() {}
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveLoc>(".loc");
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveStabs>(".stabs");
+ AddDirectiveHandler<&GenericAsmParser::ParseDirectiveSpace>(".space");
+ AddDirectiveHandler<&GenericAsmParser::ParseDirectiveSpace>(".skip");
+
// CFI directives.
+ AddDirectiveHandler<&GenericAsmParser::ParseDirectiveCFISections>(
+ ".cfi_sections");
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveCFIStartProc>(
".cfi_startproc");
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveCFIEndProc>(
".cfi_endproc");
+ AddDirectiveHandler<&GenericAsmParser::ParseDirectiveCFIDefCfa>(
+ ".cfi_def_cfa");
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveCFIDefCfaOffset>(
".cfi_def_cfa_offset");
+ AddDirectiveHandler<&GenericAsmParser::ParseDirectiveCFIAdjustCfaOffset>(
+ ".cfi_adjust_cfa_offset");
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveCFIDefCfaRegister>(
".cfi_def_cfa_register");
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveCFIOffset>(
".cfi_offset");
+ AddDirectiveHandler<&GenericAsmParser::ParseDirectiveCFIRelOffset>(
+ ".cfi_rel_offset");
AddDirectiveHandler<
&GenericAsmParser::ParseDirectiveCFIPersonalityOrLsda>(".cfi_personality");
AddDirectiveHandler<
&GenericAsmParser::ParseDirectiveCFIPersonalityOrLsda>(".cfi_lsda");
+ AddDirectiveHandler<
+ &GenericAsmParser::ParseDirectiveCFIRememberState>(".cfi_remember_state");
+ AddDirectiveHandler<
+ &GenericAsmParser::ParseDirectiveCFIRestoreState>(".cfi_restore_state");
+ AddDirectiveHandler<
+ &GenericAsmParser::ParseDirectiveCFISameValue>(".cfi_same_value");
+ AddDirectiveHandler<
+ &GenericAsmParser::ParseDirectiveCFIRestore>(".cfi_restore");
+ AddDirectiveHandler<
+ &GenericAsmParser::ParseDirectiveCFIEscape>(".cfi_escape");
+ AddDirectiveHandler<
+ &GenericAsmParser::ParseDirectiveCFISignalFrame>(".cfi_signal_frame");
+ AddDirectiveHandler<
+ &GenericAsmParser::ParseDirectiveCFIUndefined>(".cfi_undefined");
+ AddDirectiveHandler<
+ &GenericAsmParser::ParseDirectiveCFIRegister>(".cfi_register");
// Macro directives.
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveMacrosOnOff>(
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveMacro>(".macro");
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveEndMacro>(".endm");
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveEndMacro>(".endmacro");
+ AddDirectiveHandler<&GenericAsmParser::ParseDirectivePurgeMacro>(".purgem");
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveLEB128>(".sleb128");
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveLEB128>(".uleb128");
}
+ bool ParseRegisterOrRegisterNumber(int64_t &Register, SMLoc DirectiveLoc);
+
bool ParseDirectiveFile(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveLine(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveLoc(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveStabs(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveSpace(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFISections(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveCFIStartProc(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveCFIEndProc(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIDefCfa(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveCFIDefCfaOffset(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIAdjustCfaOffset(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveCFIDefCfaRegister(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveCFIOffset(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIRelOffset(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveCFIPersonalityOrLsda(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIRememberState(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIRestoreState(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFISameValue(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIRestore(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIEscape(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFISignalFrame(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIUndefined(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIRegister(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveMacrosOnOff(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveMacro(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveEndMacro(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectivePurgeMacro(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveLEB128(StringRef, SMLoc);
};
enum { DEFAULT_ADDRSPACE = 0 };
-AsmParser::AsmParser(const Target &T, SourceMgr &_SM, MCContext &_Ctx,
+AsmParser::AsmParser(SourceMgr &_SM, MCContext &_Ctx,
MCStreamer &_Out, const MCAsmInfo &_MAI)
- : Lexer(_MAI), Ctx(_Ctx), Out(_Out), SrcMgr(_SM),
+ : Lexer(_MAI), Ctx(_Ctx), Out(_Out), MAI(_MAI), SrcMgr(_SM),
GenericParser(new GenericAsmParser), PlatformParser(0),
- CurBuffer(0), MacrosEnabled(true) {
+ CurBuffer(0), MacrosEnabled(true), CppHashLineNumber(0),
+ AssemblerDialect(~0U), IsDarwin(false), ParsingInlineAsm(false) {
+ // Save the old handler.
+ SavedDiagHandler = SrcMgr.getDiagHandler();
+ SavedDiagContext = SrcMgr.getDiagContext();
+ // Set our own handler which calls the saved handler.
+ SrcMgr.setDiagHandler(DiagHandler, this);
Lexer.setBuffer(SrcMgr.getMemoryBuffer(CurBuffer));
// Initialize the generic parser.
} else if (_MAI.hasSubsectionsViaSymbols()) {
PlatformParser = createDarwinAsmParser();
PlatformParser->Initialize(*this);
+ IsDarwin = true;
} else {
PlatformParser = createELFAsmParser();
PlatformParser->Initialize(*this);
}
+
+ initializeDirectiveKindMapping();
}
AsmParser::~AsmParser() {
// Print the active macro instantiation stack.
for (std::vector<MacroInstantiation*>::const_reverse_iterator
it = ActiveMacros.rbegin(), ie = ActiveMacros.rend(); it != ie; ++it)
- PrintMessage((*it)->InstantiationLoc, "while in macro instantiation",
- "note");
+ PrintMessage((*it)->InstantiationLoc, SourceMgr::DK_Note,
+ "while in macro instantiation");
}
-void AsmParser::Warning(SMLoc L, const Twine &Msg) {
- PrintMessage(L, Msg, "warning");
+bool AsmParser::Warning(SMLoc L, const Twine &Msg, ArrayRef<SMRange> Ranges) {
+ if (FatalAssemblerWarnings)
+ return Error(L, Msg, Ranges);
+ PrintMessage(L, SourceMgr::DK_Warning, Msg, Ranges);
PrintMacroInstantiations();
+ return false;
}
-bool AsmParser::Error(SMLoc L, const Twine &Msg) {
+bool AsmParser::Error(SMLoc L, const Twine &Msg, ArrayRef<SMRange> Ranges) {
HadError = true;
- PrintMessage(L, Msg, "error");
+ PrintMessage(L, SourceMgr::DK_Error, Msg, Ranges);
PrintMacroInstantiations();
return true;
}
bool AsmParser::EnterIncludeFile(const std::string &Filename) {
- int NewBuf = SrcMgr.AddIncludeFile(Filename, Lexer.getLoc());
+ std::string IncludedFile;
+ int NewBuf = SrcMgr.AddIncludeFile(Filename, Lexer.getLoc(), IncludedFile);
if (NewBuf == -1)
return true;
return false;
}
-void AsmParser::JumpToLoc(SMLoc Loc) {
- CurBuffer = SrcMgr.FindBufferContainingLoc(Loc);
+/// Process the specified .incbin file by seaching for it in the include paths
+/// then just emitting the byte contents of the file to the streamer. This
+/// returns true on failure.
+bool AsmParser::ProcessIncbinFile(const std::string &Filename) {
+ std::string IncludedFile;
+ int NewBuf = SrcMgr.AddIncludeFile(Filename, Lexer.getLoc(), IncludedFile);
+ if (NewBuf == -1)
+ return true;
+
+ // Pick up the bytes from the file and emit them.
+ getStreamer().EmitBytes(SrcMgr.getMemoryBuffer(NewBuf)->getBuffer(),
+ DEFAULT_ADDRSPACE);
+ return false;
+}
+
+void AsmParser::JumpToLoc(SMLoc Loc, int InBuffer) {
+ if (InBuffer != -1) {
+ CurBuffer = InBuffer;
+ } else {
+ CurBuffer = SrcMgr.FindBufferContainingLoc(Loc);
+ }
Lexer.setBuffer(SrcMgr.getMemoryBuffer(CurBuffer), Loc.getPointer());
}
HadError = false;
AsmCond StartingCondState = TheCondState;
+ // If we are generating dwarf for assembly source files save the initial text
+ // section and generate a .file directive.
+ if (getContext().getGenDwarfForAssembly()) {
+ getContext().setGenDwarfSection(getStreamer().getCurrentSection());
+ MCSymbol *SectionStartSym = getContext().CreateTempSymbol();
+ getStreamer().EmitLabel(SectionStartSym);
+ getContext().setGenDwarfSectionStartSym(SectionStartSym);
+ getStreamer().EmitDwarfFileDirective(getContext().nextGenDwarfFileNumber(),
+ StringRef(),
+ getContext().getMainFileName());
+ }
+
// While we have input, parse each statement.
while (Lexer.isNot(AsmToken::Eof)) {
- if (!ParseStatement()) continue;
+ ParseStatementInfo Info;
+ if (!ParseStatement(Info)) continue;
// We had an error, validate that one was emitted and recover by skipping to
// the next line.
TokError("unassigned file number: " + Twine(i) + " for .file directives");
}
+ // Check to see that all assembler local symbols were actually defined.
+ // Targets that don't do subsections via symbols may not want this, though,
+ // so conservatively exclude them. Only do this if we're finalizing, though,
+ // as otherwise we won't necessarilly have seen everything yet.
+ if (!NoFinalize && MAI.hasSubsectionsViaSymbols()) {
+ const MCContext::SymbolTable &Symbols = getContext().getSymbols();
+ for (MCContext::SymbolTable::const_iterator i = Symbols.begin(),
+ e = Symbols.end();
+ i != e; ++i) {
+ MCSymbol *Sym = i->getValue();
+ // Variable symbols may not be marked as defined, so check those
+ // explicitly. If we know it's a variable, we have a definition for
+ // the purposes of this check.
+ if (Sym->isTemporary() && !Sym->isVariable() && !Sym->isDefined())
+ // FIXME: We would really like to refer back to where the symbol was
+ // first referenced for a source location. We need to add something
+ // to track that. Currently, we just point to the end of the file.
+ PrintMessage(getLexer().getLoc(), SourceMgr::DK_Error,
+ "assembler local symbol '" + Sym->getName() +
+ "' not defined");
+ }
+ }
+
+
// Finalize the output stream if there are no errors and if the client wants
// us to.
if (!HadError && !NoFinalize)
}
void AsmParser::CheckForValidSection() {
- if (!getStreamer().getCurrentSection()) {
+ if (!ParsingInlineAsm && !getStreamer().getCurrentSection()) {
TokError("expected section directive before assembly directive");
Out.SwitchSection(Ctx.getMachOSection(
"__TEXT", "__text",
return StringRef(Start, End - Start);
}
+StringRef AsmParser::ParseStringToComma() {
+ const char *Start = getTok().getLoc().getPointer();
+
+ while (Lexer.isNot(AsmToken::EndOfStatement) &&
+ Lexer.isNot(AsmToken::Comma) &&
+ Lexer.isNot(AsmToken::Eof))
+ Lex();
+
+ const char *End = getTok().getLoc().getPointer();
+ return StringRef(Start, End - Start);
+}
+
/// ParseParenExpr - Parse a paren expression and return it.
/// NOTE: This assumes the leading '(' has already been consumed.
///
if (ParseExpression(Res)) return true;
if (Lexer.isNot(AsmToken::RParen))
return TokError("expected ')' in parentheses expression");
- EndLoc = Lexer.getLoc();
+ EndLoc = Lexer.getTok().getEndLoc();
+ Lex();
+ return false;
+}
+
+/// ParseBracketExpr - Parse a bracket expression and return it.
+/// NOTE: This assumes the leading '[' has already been consumed.
+///
+/// bracketexpr ::= expr]
+///
+bool AsmParser::ParseBracketExpr(const MCExpr *&Res, SMLoc &EndLoc) {
+ if (ParseExpression(Res)) return true;
+ if (Lexer.isNot(AsmToken::RBrac))
+ return TokError("expected ']' in brackets expression");
+ EndLoc = Lexer.getTok().getEndLoc();
Lex();
return false;
}
switch (Lexer.getKind()) {
default:
return TokError("unknown token in expression");
+ // If we have an error assume that we've already handled it.
+ case AsmToken::Error:
+ return true;
case AsmToken::Exclaim:
Lex(); // Eat the operator.
if (ParsePrimaryExpr(Res, EndLoc))
case AsmToken::Dollar:
case AsmToken::String:
case AsmToken::Identifier: {
- EndLoc = Lexer.getLoc();
-
StringRef Identifier;
if (ParseIdentifier(Identifier))
- return false;
+ return true;
+
+ EndLoc = SMLoc::getFromPointer(Identifier.end());
// This is a symbol reference.
std::pair<StringRef, StringRef> Split = Identifier.split('@');
Variant = MCSymbolRefExpr::getVariantKindForName(Split.second);
if (Variant == MCSymbolRefExpr::VK_Invalid) {
Variant = MCSymbolRefExpr::VK_None;
- TokError("invalid variant '" + Split.second + "'");
+ return TokError("invalid variant '" + Split.second + "'");
}
}
SMLoc Loc = getTok().getLoc();
int64_t IntVal = getTok().getIntVal();
Res = MCConstantExpr::Create(IntVal, getContext());
- EndLoc = Lexer.getLoc();
+ EndLoc = Lexer.getTok().getEndLoc();
Lex(); // Eat token.
// Look for 'b' or 'f' following an Integer as a directional label
if (Lexer.getKind() == AsmToken::Identifier) {
IDVal == "f" ? 1 : 0);
Res = MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_None,
getContext());
- if(IDVal == "b" && Sym->isUndefined())
+ if (IDVal == "b" && Sym->isUndefined())
return Error(Loc, "invalid reference to undefined symbol");
- EndLoc = Lexer.getLoc();
+ EndLoc = Lexer.getTok().getEndLoc();
Lex(); // Eat identifier.
}
}
return false;
}
+ case AsmToken::Real: {
+ APFloat RealVal(APFloat::IEEEdouble, getTok().getString());
+ uint64_t IntVal = RealVal.bitcastToAPInt().getZExtValue();
+ Res = MCConstantExpr::Create(IntVal, getContext());
+ EndLoc = Lexer.getTok().getEndLoc();
+ Lex(); // Eat token.
+ return false;
+ }
case AsmToken::Dot: {
// This is a '.' reference, which references the current PC. Emit a
// temporary label to the streamer and refer to it.
MCSymbol *Sym = Ctx.CreateTempSymbol();
Out.EmitLabel(Sym);
Res = MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_None, getContext());
- EndLoc = Lexer.getLoc();
+ EndLoc = Lexer.getTok().getEndLoc();
Lex(); // Eat identifier.
return false;
}
-
case AsmToken::LParen:
Lex(); // Eat the '('.
return ParseParenExpr(Res, EndLoc);
+ case AsmToken::LBrac:
+ if (!PlatformParser->HasBracketExpressions())
+ return TokError("brackets expression not supported on this target");
+ Lex(); // Eat the '['.
+ return ParseBracketExpr(Res, EndLoc);
case AsmToken::Minus:
Lex(); // Eat the operator.
if (ParsePrimaryExpr(Res, EndLoc))
}
}
- assert(0 && "Invalid expression kind!");
- return 0;
+ llvm_unreachable("Invalid expression kind!");
}
/// ParseExpression - Parse an expression and return it.
///
-/// expr ::= expr +,- expr -> lowest.
-/// expr ::= expr |,^,&,! expr -> middle.
-/// expr ::= expr *,/,%,<<,>> expr -> highest.
+/// expr ::= expr &&,|| expr -> lowest.
+/// expr ::= expr |,^,&,! expr
+/// expr ::= expr ==,!=,<>,<,<=,>,>= expr
+/// expr ::= expr <<,>> expr
+/// expr ::= expr +,- expr
+/// expr ::= expr *,/,% expr -> highest.
/// expr ::= primaryexpr
///
bool AsmParser::ParseExpression(const MCExpr *&Res, SMLoc &EndLoc) {
if (!ModifiedRes) {
return TokError("invalid modifier '" + getTok().getIdentifier() +
"' (no symbols present)");
- return true;
}
Res = ModifiedRes;
default:
return 0; // not a binop.
- // Lowest Precedence: &&, ||, @
+ // Lowest Precedence: &&, ||
case AsmToken::AmpAmp:
Kind = MCBinaryExpr::LAnd;
return 1;
Kind = MCBinaryExpr::GTE;
return 3;
+ // Intermediate Precedence: <<, >>
+ case AsmToken::LessLess:
+ Kind = MCBinaryExpr::Shl;
+ return 4;
+ case AsmToken::GreaterGreater:
+ Kind = MCBinaryExpr::Shr;
+ return 4;
+
// High Intermediate Precedence: +, -
case AsmToken::Plus:
Kind = MCBinaryExpr::Add;
- return 4;
+ return 5;
case AsmToken::Minus:
Kind = MCBinaryExpr::Sub;
- return 4;
+ return 5;
- // Highest Precedence: *, /, %, <<, >>
+ // Highest Precedence: *, /, %
case AsmToken::Star:
Kind = MCBinaryExpr::Mul;
- return 5;
+ return 6;
case AsmToken::Slash:
Kind = MCBinaryExpr::Div;
- return 5;
+ return 6;
case AsmToken::Percent:
Kind = MCBinaryExpr::Mod;
- return 5;
- case AsmToken::LessLess:
- Kind = MCBinaryExpr::Shl;
- return 5;
- case AsmToken::GreaterGreater:
- Kind = MCBinaryExpr::Shr;
- return 5;
+ return 6;
}
}
}
}
-
-
-
/// ParseStatement:
/// ::= EndOfStatement
/// ::= Label* Directive ...Operands... EndOfStatement
/// ::= Label* Identifier OperandList* EndOfStatement
-bool AsmParser::ParseStatement() {
+bool AsmParser::ParseStatement(ParseStatementInfo &Info) {
if (Lexer.is(AsmToken::EndOfStatement)) {
Out.AddBlankLine();
Lex();
return false;
}
- // Statements always start with an identifier.
+ // Statements always start with an identifier or are a full line comment.
AsmToken ID = getTok();
SMLoc IDLoc = ID.getLoc();
StringRef IDVal;
int64_t LocalLabelVal = -1;
- // GUESS allow an integer followed by a ':' as a directional local label
+ // A full line comment is a '#' as the first token.
+ if (Lexer.is(AsmToken::Hash))
+ return ParseCppHashLineFilenameComment(IDLoc);
+
+ // Allow an integer followed by a ':' as a directional local label.
if (Lexer.is(AsmToken::Integer)) {
LocalLabelVal = getTok().getIntVal();
if (LocalLabelVal < 0) {
return TokError("unexpected token at start of statement");
}
}
- }
- else if (ParseIdentifier(IDVal)) {
+
+ } else if (Lexer.is(AsmToken::Dot)) {
+ // Treat '.' as a valid identifier in this context.
+ Lex();
+ IDVal = ".";
+
+ } else if (ParseIdentifier(IDVal)) {
if (!TheCondState.Ignore)
return TokError("unexpected token at start of statement");
IDVal = "";
// Handle conditional assembly here before checking for skipping. We
// have to do this so that .endif isn't skipped in a ".if 0" block for
// example.
- if (IDVal == ".if")
- return ParseDirectiveIf(IDLoc);
- if (IDVal == ".elseif")
- return ParseDirectiveElseIf(IDLoc);
- if (IDVal == ".else")
- return ParseDirectiveElse(IDLoc);
- if (IDVal == ".endif")
- return ParseDirectiveEndIf(IDLoc);
+ StringMap<DirectiveKind>::const_iterator DirKindIt =
+ DirectiveKindMapping.find(IDVal);
+ DirectiveKind DirKind =
+ (DirKindIt == DirectiveKindMapping.end()) ? DK_NO_DIRECTIVE :
+ DirKindIt->getValue();
+ switch (DirKind) {
+ default:
+ break;
+ case DK_IF:
+ return ParseDirectiveIf(IDLoc);
+ case DK_IFB:
+ return ParseDirectiveIfb(IDLoc, true);
+ case DK_IFNB:
+ return ParseDirectiveIfb(IDLoc, false);
+ case DK_IFC:
+ return ParseDirectiveIfc(IDLoc, true);
+ case DK_IFNC:
+ return ParseDirectiveIfc(IDLoc, false);
+ case DK_IFDEF:
+ return ParseDirectiveIfdef(IDLoc, true);
+ case DK_IFNDEF:
+ case DK_IFNOTDEF:
+ return ParseDirectiveIfdef(IDLoc, false);
+ case DK_ELSEIF:
+ return ParseDirectiveElseIf(IDLoc);
+ case DK_ELSE:
+ return ParseDirectiveElse(IDLoc);
+ case DK_ENDIF:
+ return ParseDirectiveEndIf(IDLoc);
+ }
// If we are in a ".if 0" block, ignore this statement.
if (TheCondState.Ignore) {
// identifier ':' -> Label.
Lex();
+ // Diagnose attempt to use '.' as a label.
+ if (IDVal == ".")
+ return Error(IDLoc, "invalid use of pseudo-symbol '.' as a label");
+
// Diagnose attempt to use a variable as a label.
//
// FIXME: Diagnostics. Note the location of the definition as a label.
return Error(IDLoc, "invalid symbol redefinition");
// Emit the label.
- Out.EmitLabel(Sym);
+ if (!ParsingInlineAsm)
+ Out.EmitLabel(Sym);
+
+ // If we are generating dwarf for assembly source files then gather the
+ // info to make a dwarf label entry for this label if needed.
+ if (getContext().getGenDwarfForAssembly())
+ MCGenDwarfLabelEntry::Make(Sym, &getStreamer(), getSourceManager(),
+ IDLoc);
// Consume any end of statement token, if present, to avoid spurious
// AddBlankLine calls().
return false;
}
- return ParseStatement();
+ return false;
}
case AsmToken::Equal:
// identifier '=' ... -> assignment statement
Lex();
- return ParseAssignment(IDVal);
+ return ParseAssignment(IDVal, true);
default: // Normal instruction or directive.
break;
return HandleMacroEntry(IDVal, IDLoc, M);
// Otherwise, we have a normal instruction or directive.
- if (IDVal[0] == '.') {
- // Assembler features
- if (IDVal == ".set" || IDVal == ".equ")
- return ParseDirectiveSet(IDVal);
-
- // Data directives
-
- if (IDVal == ".ascii")
- return ParseDirectiveAscii(IDVal, false);
- if (IDVal == ".asciz" || IDVal == ".string")
- return ParseDirectiveAscii(IDVal, true);
-
- if (IDVal == ".byte")
- return ParseDirectiveValue(1);
- if (IDVal == ".short")
- return ParseDirectiveValue(2);
- if (IDVal == ".value")
- return ParseDirectiveValue(2);
- if (IDVal == ".2byte")
- return ParseDirectiveValue(2);
- if (IDVal == ".long")
- return ParseDirectiveValue(4);
- if (IDVal == ".4byte")
- return ParseDirectiveValue(4);
- if (IDVal == ".quad")
- return ParseDirectiveValue(8);
- if (IDVal == ".8byte")
- return ParseDirectiveValue(8);
- if (IDVal == ".single")
- return ParseDirectiveRealValue(APFloat::IEEEsingle);
- if (IDVal == ".double")
- return ParseDirectiveRealValue(APFloat::IEEEdouble);
-
- if (IDVal == ".align") {
- bool IsPow2 = !getContext().getAsmInfo().getAlignmentIsInBytes();
- return ParseDirectiveAlign(IsPow2, /*ExprSize=*/1);
- }
- if (IDVal == ".align32") {
- bool IsPow2 = !getContext().getAsmInfo().getAlignmentIsInBytes();
- return ParseDirectiveAlign(IsPow2, /*ExprSize=*/4);
+ if (IDVal[0] == '.' && IDVal != ".") {
+
+ // Target hook for parsing target specific directives.
+ if (!getTargetParser().ParseDirective(ID))
+ return false;
+
+ switch (DirKind) {
+ default:
+ break;
+ case DK_SET:
+ case DK_EQU:
+ return ParseDirectiveSet(IDVal, true);
+ case DK_EQUIV:
+ return ParseDirectiveSet(IDVal, false);
+ case DK_ASCII:
+ return ParseDirectiveAscii(IDVal, false);
+ case DK_ASCIZ:
+ case DK_STRING:
+ return ParseDirectiveAscii(IDVal, true);
+ case DK_BYTE:
+ return ParseDirectiveValue(1);
+ case DK_SHORT:
+ case DK_VALUE:
+ case DK_2BYTE:
+ return ParseDirectiveValue(2);
+ case DK_LONG:
+ case DK_INT:
+ case DK_4BYTE:
+ return ParseDirectiveValue(4);
+ case DK_QUAD:
+ case DK_8BYTE:
+ return ParseDirectiveValue(8);
+ case DK_SINGLE:
+ case DK_FLOAT:
+ return ParseDirectiveRealValue(APFloat::IEEEsingle);
+ case DK_DOUBLE:
+ return ParseDirectiveRealValue(APFloat::IEEEdouble);
+ case DK_ALIGN: {
+ bool IsPow2 = !getContext().getAsmInfo().getAlignmentIsInBytes();
+ return ParseDirectiveAlign(IsPow2, /*ExprSize=*/1);
+ }
+ case DK_ALIGN32: {
+ bool IsPow2 = !getContext().getAsmInfo().getAlignmentIsInBytes();
+ return ParseDirectiveAlign(IsPow2, /*ExprSize=*/4);
+ }
+ case DK_BALIGN:
+ return ParseDirectiveAlign(/*IsPow2=*/false, /*ExprSize=*/1);
+ case DK_BALIGNW:
+ return ParseDirectiveAlign(/*IsPow2=*/false, /*ExprSize=*/2);
+ case DK_BALIGNL:
+ return ParseDirectiveAlign(/*IsPow2=*/false, /*ExprSize=*/4);
+ case DK_P2ALIGN:
+ return ParseDirectiveAlign(/*IsPow2=*/true, /*ExprSize=*/1);
+ case DK_P2ALIGNW:
+ return ParseDirectiveAlign(/*IsPow2=*/true, /*ExprSize=*/2);
+ case DK_P2ALIGNL:
+ return ParseDirectiveAlign(/*IsPow2=*/true, /*ExprSize=*/4);
+ case DK_ORG:
+ return ParseDirectiveOrg();
+ case DK_FILL:
+ return ParseDirectiveFill();
+ case DK_ZERO:
+ return ParseDirectiveZero();
+ case DK_EXTERN:
+ EatToEndOfStatement(); // .extern is the default, ignore it.
+ return false;
+ case DK_GLOBL:
+ case DK_GLOBAL:
+ return ParseDirectiveSymbolAttribute(MCSA_Global);
+ case DK_INDIRECT_SYMBOL:
+ return ParseDirectiveSymbolAttribute(MCSA_IndirectSymbol);
+ case DK_LAZY_REFERENCE:
+ return ParseDirectiveSymbolAttribute(MCSA_LazyReference);
+ case DK_NO_DEAD_STRIP:
+ return ParseDirectiveSymbolAttribute(MCSA_NoDeadStrip);
+ case DK_SYMBOL_RESOLVER:
+ return ParseDirectiveSymbolAttribute(MCSA_SymbolResolver);
+ case DK_PRIVATE_EXTERN:
+ return ParseDirectiveSymbolAttribute(MCSA_PrivateExtern);
+ case DK_REFERENCE:
+ return ParseDirectiveSymbolAttribute(MCSA_Reference);
+ case DK_WEAK_DEFINITION:
+ return ParseDirectiveSymbolAttribute(MCSA_WeakDefinition);
+ case DK_WEAK_REFERENCE:
+ return ParseDirectiveSymbolAttribute(MCSA_WeakReference);
+ case DK_WEAK_DEF_CAN_BE_HIDDEN:
+ return ParseDirectiveSymbolAttribute(MCSA_WeakDefAutoPrivate);
+ case DK_COMM:
+ case DK_COMMON:
+ return ParseDirectiveComm(/*IsLocal=*/false);
+ case DK_LCOMM:
+ return ParseDirectiveComm(/*IsLocal=*/true);
+ case DK_ABORT:
+ return ParseDirectiveAbort();
+ case DK_INCLUDE:
+ return ParseDirectiveInclude();
+ case DK_INCBIN:
+ return ParseDirectiveIncbin();
+ case DK_CODE16:
+ case DK_CODE16GCC:
+ return TokError(Twine(IDVal) + " not supported yet");
+ case DK_REPT:
+ return ParseDirectiveRept(IDLoc);
+ case DK_IRP:
+ return ParseDirectiveIrp(IDLoc);
+ case DK_IRPC:
+ return ParseDirectiveIrpc(IDLoc);
+ case DK_ENDR:
+ return ParseDirectiveEndr(IDLoc);
+ case DK_BUNDLE_ALIGN_MODE:
+ return ParseDirectiveBundleAlignMode();
+ case DK_BUNDLE_LOCK:
+ return ParseDirectiveBundleLock();
+ case DK_BUNDLE_UNLOCK:
+ return ParseDirectiveBundleUnlock();
}
- if (IDVal == ".balign")
- return ParseDirectiveAlign(/*IsPow2=*/false, /*ExprSize=*/1);
- if (IDVal == ".balignw")
- return ParseDirectiveAlign(/*IsPow2=*/false, /*ExprSize=*/2);
- if (IDVal == ".balignl")
- return ParseDirectiveAlign(/*IsPow2=*/false, /*ExprSize=*/4);
- if (IDVal == ".p2align")
- return ParseDirectiveAlign(/*IsPow2=*/true, /*ExprSize=*/1);
- if (IDVal == ".p2alignw")
- return ParseDirectiveAlign(/*IsPow2=*/true, /*ExprSize=*/2);
- if (IDVal == ".p2alignl")
- return ParseDirectiveAlign(/*IsPow2=*/true, /*ExprSize=*/4);
-
- if (IDVal == ".org")
- return ParseDirectiveOrg();
-
- if (IDVal == ".fill")
- return ParseDirectiveFill();
- if (IDVal == ".space")
- return ParseDirectiveSpace();
- if (IDVal == ".zero")
- return ParseDirectiveZero();
-
- // Symbol attribute directives
-
- if (IDVal == ".globl" || IDVal == ".global")
- return ParseDirectiveSymbolAttribute(MCSA_Global);
- // ELF only? Should it be here?
- if (IDVal == ".local")
- return ParseDirectiveSymbolAttribute(MCSA_Local);
- if (IDVal == ".hidden")
- return ParseDirectiveSymbolAttribute(MCSA_Hidden);
- if (IDVal == ".indirect_symbol")
- return ParseDirectiveSymbolAttribute(MCSA_IndirectSymbol);
- if (IDVal == ".internal")
- return ParseDirectiveSymbolAttribute(MCSA_Internal);
- if (IDVal == ".lazy_reference")
- return ParseDirectiveSymbolAttribute(MCSA_LazyReference);
- if (IDVal == ".no_dead_strip")
- return ParseDirectiveSymbolAttribute(MCSA_NoDeadStrip);
- if (IDVal == ".private_extern")
- return ParseDirectiveSymbolAttribute(MCSA_PrivateExtern);
- if (IDVal == ".protected")
- return ParseDirectiveSymbolAttribute(MCSA_Protected);
- if (IDVal == ".reference")
- return ParseDirectiveSymbolAttribute(MCSA_Reference);
- if (IDVal == ".weak")
- return ParseDirectiveSymbolAttribute(MCSA_Weak);
- if (IDVal == ".weak_definition")
- return ParseDirectiveSymbolAttribute(MCSA_WeakDefinition);
- if (IDVal == ".weak_reference")
- return ParseDirectiveSymbolAttribute(MCSA_WeakReference);
- if (IDVal == ".weak_def_can_be_hidden")
- return ParseDirectiveSymbolAttribute(MCSA_WeakDefAutoPrivate);
-
- if (IDVal == ".comm")
- return ParseDirectiveComm(/*IsLocal=*/false);
- if (IDVal == ".lcomm")
- return ParseDirectiveComm(/*IsLocal=*/true);
-
- if (IDVal == ".abort")
- return ParseDirectiveAbort();
- if (IDVal == ".include")
- return ParseDirectiveInclude();
-
- // Look up the handler in the handler table.
+
+ // Look up the handler in the extension handler table.
std::pair<MCAsmParserExtension*, DirectiveHandler> Handler =
DirectiveMap.lookup(IDVal);
if (Handler.first)
return (*Handler.second)(Handler.first, IDVal, IDLoc);
- // Target hook for parsing target specific directives.
- if (!getTargetParser().ParseDirective(ID))
- return false;
-
- Warning(IDLoc, "ignoring directive for now");
- EatToEndOfStatement();
- return false;
+ return Error(IDLoc, "unknown directive");
}
+ // _emit
+ if (ParsingInlineAsm && IDVal == "_emit")
+ return ParseDirectiveEmit(IDLoc, Info);
+
CheckForValidSection();
// Canonicalize the opcode to lower case.
- SmallString<128> Opcode;
+ SmallString<128> OpcodeStr;
for (unsigned i = 0, e = IDVal.size(); i != e; ++i)
- Opcode.push_back(tolower(IDVal[i]));
+ OpcodeStr.push_back(tolower(IDVal[i]));
- SmallVector<MCParsedAsmOperand*, 8> ParsedOperands;
- bool HadError = getTargetParser().ParseInstruction(Opcode.str(), IDLoc,
- ParsedOperands);
+ ParseInstructionInfo IInfo(Info.AsmRewrites);
+ bool HadError = getTargetParser().ParseInstruction(IInfo, OpcodeStr.str(),
+ IDLoc,Info.ParsedOperands);
+ Info.ParseError = HadError;
// Dump the parsed representation, if requested.
if (getShowParsedOperands()) {
SmallString<256> Str;
raw_svector_ostream OS(Str);
OS << "parsed instruction: [";
- for (unsigned i = 0; i != ParsedOperands.size(); ++i) {
+ for (unsigned i = 0; i != Info.ParsedOperands.size(); ++i) {
if (i != 0)
OS << ", ";
- ParsedOperands[i]->dump(OS);
+ Info.ParsedOperands[i]->print(OS);
}
OS << "]";
- PrintMessage(IDLoc, OS.str(), "note");
+ PrintMessage(IDLoc, SourceMgr::DK_Note, OS.str());
}
- // If parsing succeeded, match the instruction.
- if (!HadError)
- HadError = getTargetParser().MatchAndEmitInstruction(IDLoc, ParsedOperands,
- Out);
+ // If we are generating dwarf for assembly source files and the current
+ // section is the initial text section then generate a .loc directive for
+ // the instruction.
+ if (!HadError && getContext().getGenDwarfForAssembly() &&
+ getContext().getGenDwarfSection() == getStreamer().getCurrentSection()) {
+
+ unsigned Line = SrcMgr.FindLineNumber(IDLoc, CurBuffer);
+
+ // If we previously parsed a cpp hash file line comment then make sure the
+ // current Dwarf File is for the CppHashFilename if not then emit the
+ // Dwarf File table for it and adjust the line number for the .loc.
+ const std::vector<MCDwarfFile *> &MCDwarfFiles =
+ getContext().getMCDwarfFiles();
+ if (CppHashFilename.size() != 0) {
+ if(MCDwarfFiles[getContext().getGenDwarfFileNumber()]->getName() !=
+ CppHashFilename)
+ getStreamer().EmitDwarfFileDirective(
+ getContext().nextGenDwarfFileNumber(), StringRef(), CppHashFilename);
+
+ unsigned CppHashLocLineNo = SrcMgr.FindLineNumber(CppHashLoc,CppHashBuf);
+ Line = CppHashLineNumber - 1 + (Line - CppHashLocLineNo);
+ }
+
+ getStreamer().EmitDwarfLocDirective(getContext().getGenDwarfFileNumber(),
+ Line, 0, DWARF2_LINE_DEFAULT_IS_STMT ?
+ DWARF2_FLAG_IS_STMT : 0, 0, 0,
+ StringRef());
+ }
- // Free any parsed operands.
- for (unsigned i = 0, e = ParsedOperands.size(); i != e; ++i)
- delete ParsedOperands[i];
+ // If parsing succeeded, match the instruction.
+ if (!HadError) {
+ unsigned ErrorInfo;
+ HadError = getTargetParser().MatchAndEmitInstruction(IDLoc, Info.Opcode,
+ Info.ParsedOperands,
+ Out, ErrorInfo,
+ ParsingInlineAsm);
+ }
// Don't skip the rest of the line, the instruction parser is responsible for
// that.
return false;
}
-MacroInstantiation::MacroInstantiation(const Macro *M, SMLoc IL, SMLoc EL,
- const std::vector<std::vector<AsmToken> > &A)
- : TheMacro(M), InstantiationLoc(IL), ExitLoc(EL)
-{
- // Macro instantiation is lexical, unfortunately. We construct a new buffer
- // to hold the macro body with substitutions.
- SmallString<256> Buf;
- raw_svector_ostream OS(Buf);
+/// EatToEndOfLine uses the Lexer to eat the characters to the end of the line
+/// since they may not be able to be tokenized to get to the end of line token.
+void AsmParser::EatToEndOfLine() {
+ if (!Lexer.is(AsmToken::EndOfStatement))
+ Lexer.LexUntilEndOfLine();
+ // Eat EOL.
+ Lex();
+}
- StringRef Body = M->Body;
+/// ParseCppHashLineFilenameComment as this:
+/// ::= # number "filename"
+/// or just as a full line comment if it doesn't have a number and a string.
+bool AsmParser::ParseCppHashLineFilenameComment(const SMLoc &L) {
+ Lex(); // Eat the hash token.
+
+ if (getLexer().isNot(AsmToken::Integer)) {
+ // Consume the line since in cases it is not a well-formed line directive,
+ // as if were simply a full line comment.
+ EatToEndOfLine();
+ return false;
+ }
+
+ int64_t LineNumber = getTok().getIntVal();
+ Lex();
+
+ if (getLexer().isNot(AsmToken::String)) {
+ EatToEndOfLine();
+ return false;
+ }
+
+ StringRef Filename = getTok().getString();
+ // Get rid of the enclosing quotes.
+ Filename = Filename.substr(1, Filename.size()-2);
+
+ // Save the SMLoc, Filename and LineNumber for later use by diagnostics.
+ CppHashLoc = L;
+ CppHashFilename = Filename;
+ CppHashLineNumber = LineNumber;
+ CppHashBuf = CurBuffer;
+
+ // Ignore any trailing characters, they're just comment.
+ EatToEndOfLine();
+ return false;
+}
+
+/// DiagHandler - will use the last parsed cpp hash line filename comment
+/// for the Filename and LineNo if any in the diagnostic.
+void AsmParser::DiagHandler(const SMDiagnostic &Diag, void *Context) {
+ const AsmParser *Parser = static_cast<const AsmParser*>(Context);
+ raw_ostream &OS = errs();
+
+ const SourceMgr &DiagSrcMgr = *Diag.getSourceMgr();
+ const SMLoc &DiagLoc = Diag.getLoc();
+ int DiagBuf = DiagSrcMgr.FindBufferContainingLoc(DiagLoc);
+ int CppHashBuf = Parser->SrcMgr.FindBufferContainingLoc(Parser->CppHashLoc);
+
+ // Like SourceMgr::PrintMessage() we need to print the include stack if any
+ // before printing the message.
+ int DiagCurBuffer = DiagSrcMgr.FindBufferContainingLoc(DiagLoc);
+ if (!Parser->SavedDiagHandler && DiagCurBuffer > 0) {
+ SMLoc ParentIncludeLoc = DiagSrcMgr.getParentIncludeLoc(DiagCurBuffer);
+ DiagSrcMgr.PrintIncludeStack(ParentIncludeLoc, OS);
+ }
+
+ // If we have not parsed a cpp hash line filename comment or the source
+ // manager changed or buffer changed (like in a nested include) then just
+ // print the normal diagnostic using its Filename and LineNo.
+ if (!Parser->CppHashLineNumber ||
+ &DiagSrcMgr != &Parser->SrcMgr ||
+ DiagBuf != CppHashBuf) {
+ if (Parser->SavedDiagHandler)
+ Parser->SavedDiagHandler(Diag, Parser->SavedDiagContext);
+ else
+ Diag.print(0, OS);
+ return;
+ }
+
+ // Use the CppHashFilename and calculate a line number based on the
+ // CppHashLoc and CppHashLineNumber relative to this Diag's SMLoc for
+ // the diagnostic.
+ const std::string Filename = Parser->CppHashFilename;
+
+ int DiagLocLineNo = DiagSrcMgr.FindLineNumber(DiagLoc, DiagBuf);
+ int CppHashLocLineNo =
+ Parser->SrcMgr.FindLineNumber(Parser->CppHashLoc, CppHashBuf);
+ int LineNo = Parser->CppHashLineNumber - 1 +
+ (DiagLocLineNo - CppHashLocLineNo);
+
+ SMDiagnostic NewDiag(*Diag.getSourceMgr(), Diag.getLoc(),
+ Filename, LineNo, Diag.getColumnNo(),
+ Diag.getKind(), Diag.getMessage(),
+ Diag.getLineContents(), Diag.getRanges());
+
+ if (Parser->SavedDiagHandler)
+ Parser->SavedDiagHandler(NewDiag, Parser->SavedDiagContext);
+ else
+ NewDiag.print(0, OS);
+}
+
+// FIXME: This is mostly duplicated from the function in AsmLexer.cpp. The
+// difference being that that function accepts '@' as part of identifiers and
+// we can't do that. AsmLexer.cpp should probably be changed to handle
+// '@' as a special case when needed.
+static bool isIdentifierChar(char c) {
+ return isalnum(c) || c == '_' || c == '$' || c == '.';
+}
+
+bool AsmParser::expandMacro(raw_svector_ostream &OS, StringRef Body,
+ const MacroParameters &Parameters,
+ const MacroArguments &A,
+ const SMLoc &L) {
+ unsigned NParameters = Parameters.size();
+ if (NParameters != 0 && NParameters != A.size())
+ return Error(L, "Wrong number of arguments");
+
+ // A macro without parameters is handled differently on Darwin:
+ // gas accepts no arguments and does no substitutions
while (!Body.empty()) {
// Scan for the next substitution.
std::size_t End = Body.size(), Pos = 0;
for (; Pos != End; ++Pos) {
// Check for a substitution or escape.
- if (Body[Pos] != '$' || Pos + 1 == End)
- continue;
-
- char Next = Body[Pos + 1];
- if (Next == '$' || Next == 'n' || isdigit(Next))
- break;
+ if (!NParameters) {
+ // This macro has no parameters, look for $0, $1, etc.
+ if (Body[Pos] != '$' || Pos + 1 == End)
+ continue;
+
+ char Next = Body[Pos + 1];
+ if (Next == '$' || Next == 'n' || isdigit(Next))
+ break;
+ } else {
+ // This macro has parameters, look for \foo, \bar, etc.
+ if (Body[Pos] == '\\' && Pos + 1 != End)
+ break;
+ }
}
// Add the prefix.
if (Pos == End)
break;
- switch (Body[Pos+1]) {
- // $$ => $
- case '$':
- OS << '$';
- break;
+ if (!NParameters) {
+ switch (Body[Pos+1]) {
+ // $$ => $
+ case '$':
+ OS << '$';
+ break;
- // $n => number of arguments
- case 'n':
- OS << A.size();
- break;
+ // $n => number of arguments
+ case 'n':
+ OS << A.size();
+ break;
- // $[0-9] => argument
- default: {
- // Missing arguments are ignored.
- unsigned Index = Body[Pos+1] - '0';
- if (Index >= A.size())
+ // $[0-9] => argument
+ default: {
+ // Missing arguments are ignored.
+ unsigned Index = Body[Pos+1] - '0';
+ if (Index >= A.size())
+ break;
+
+ // Otherwise substitute with the token values, with spaces eliminated.
+ for (MacroArgument::const_iterator it = A[Index].begin(),
+ ie = A[Index].end(); it != ie; ++it)
+ OS << it->getString();
break;
+ }
+ }
+ Pos += 2;
+ } else {
+ unsigned I = Pos + 1;
+ while (isIdentifierChar(Body[I]) && I + 1 != End)
+ ++I;
+
+ const char *Begin = Body.data() + Pos +1;
+ StringRef Argument(Begin, I - (Pos +1));
+ unsigned Index = 0;
+ for (; Index < NParameters; ++Index)
+ if (Parameters[Index].first == Argument)
+ break;
+
+ if (Index == NParameters) {
+ if (Body[Pos+1] == '(' && Body[Pos+2] == ')')
+ Pos += 3;
+ else {
+ OS << '\\' << Argument;
+ Pos = I;
+ }
+ } else {
+ for (MacroArgument::const_iterator it = A[Index].begin(),
+ ie = A[Index].end(); it != ie; ++it)
+ if (it->getKind() == AsmToken::String)
+ OS << it->getStringContents();
+ else
+ OS << it->getString();
- // Otherwise substitute with the token values, with spaces eliminated.
- for (std::vector<AsmToken>::const_iterator it = A[Index].begin(),
- ie = A[Index].end(); it != ie; ++it)
- OS << it->getString();
- break;
- }
+ Pos += 1 + Argument.size();
+ }
}
-
// Update the scan point.
- Body = Body.substr(Pos + 2);
+ Body = Body.substr(Pos);
}
- // We include the .endmacro in the buffer as our queue to exit the macro
- // instantiation.
- OS << ".endmacro\n";
+ return false;
+}
- Instantiation = MemoryBuffer::getMemBufferCopy(OS.str(), "<instantiation>");
+MacroInstantiation::MacroInstantiation(const Macro *M, SMLoc IL,
+ int EB, SMLoc EL,
+ MemoryBuffer *I)
+ : TheMacro(M), Instantiation(I), InstantiationLoc(IL), ExitBuffer(EB),
+ ExitLoc(EL)
+{
}
-bool AsmParser::HandleMacroEntry(StringRef Name, SMLoc NameLoc,
- const Macro *M) {
- // Arbitrarily limit macro nesting depth, to match 'as'. We can eliminate
- // this, although we should protect against infinite loops.
- if (ActiveMacros.size() == 20)
- return TokError("macros cannot be nested more than 20 levels deep");
+static bool IsOperator(AsmToken::TokenKind kind)
+{
+ switch (kind)
+ {
+ default:
+ return false;
+ case AsmToken::Plus:
+ case AsmToken::Minus:
+ case AsmToken::Tilde:
+ case AsmToken::Slash:
+ case AsmToken::Star:
+ case AsmToken::Dot:
+ case AsmToken::Equal:
+ case AsmToken::EqualEqual:
+ case AsmToken::Pipe:
+ case AsmToken::PipePipe:
+ case AsmToken::Caret:
+ case AsmToken::Amp:
+ case AsmToken::AmpAmp:
+ case AsmToken::Exclaim:
+ case AsmToken::ExclaimEqual:
+ case AsmToken::Percent:
+ case AsmToken::Less:
+ case AsmToken::LessEqual:
+ case AsmToken::LessLess:
+ case AsmToken::LessGreater:
+ case AsmToken::Greater:
+ case AsmToken::GreaterEqual:
+ case AsmToken::GreaterGreater:
+ return true;
+ }
+}
- // Parse the macro instantiation arguments.
- std::vector<std::vector<AsmToken> > MacroArguments;
- MacroArguments.push_back(std::vector<AsmToken>());
+/// ParseMacroArgument - Extract AsmTokens for a macro argument.
+/// This is used for both default macro parameter values and the
+/// arguments in macro invocations
+bool AsmParser::ParseMacroArgument(MacroArgument &MA,
+ AsmToken::TokenKind &ArgumentDelimiter) {
unsigned ParenLevel = 0;
+ unsigned AddTokens = 0;
+
+ // gas accepts arguments separated by whitespace, except on Darwin
+ if (!IsDarwin)
+ Lexer.setSkipSpace(false);
+
for (;;) {
- if (Lexer.is(AsmToken::Eof))
+ if (Lexer.is(AsmToken::Eof) || Lexer.is(AsmToken::Equal)) {
+ Lexer.setSkipSpace(true);
return TokError("unexpected token in macro instantiation");
- if (Lexer.is(AsmToken::EndOfStatement))
- break;
+ }
- // If we aren't inside parentheses and this is a comma, start a new token
- // list.
if (ParenLevel == 0 && Lexer.is(AsmToken::Comma)) {
- MacroArguments.push_back(std::vector<AsmToken>());
- } else {
- // Adjust the current parentheses level.
- if (Lexer.is(AsmToken::LParen))
- ++ParenLevel;
- else if (Lexer.is(AsmToken::RParen) && ParenLevel)
- --ParenLevel;
-
- // Append the token to the current argument list.
- MacroArguments.back().push_back(getTok());
+ // Spaces and commas cannot be mixed to delimit parameters
+ if (ArgumentDelimiter == AsmToken::Eof)
+ ArgumentDelimiter = AsmToken::Comma;
+ else if (ArgumentDelimiter != AsmToken::Comma) {
+ Lexer.setSkipSpace(true);
+ return TokError("expected ' ' for macro argument separator");
+ }
+ break;
}
- Lex();
- }
- // Create the macro instantiation object and add to the current macro
- // instantiation stack.
- MacroInstantiation *MI = new MacroInstantiation(M, NameLoc,
- getTok().getLoc(),
- MacroArguments);
- ActiveMacros.push_back(MI);
+ if (Lexer.is(AsmToken::Space)) {
+ Lex(); // Eat spaces
+
+ // Spaces can delimit parameters, but could also be part an expression.
+ // If the token after a space is an operator, add the token and the next
+ // one into this argument
+ if (ArgumentDelimiter == AsmToken::Space ||
+ ArgumentDelimiter == AsmToken::Eof) {
+ if (IsOperator(Lexer.getKind())) {
+ // Check to see whether the token is used as an operator,
+ // or part of an identifier
+ const char *NextChar = getTok().getEndLoc().getPointer();
+ if (*NextChar == ' ')
+ AddTokens = 2;
+ }
- // Jump to the macro instantiation and prime the lexer.
- CurBuffer = SrcMgr.AddNewSourceBuffer(MI->Instantiation, SMLoc());
- Lexer.setBuffer(SrcMgr.getMemoryBuffer(CurBuffer));
- Lex();
+ if (!AddTokens && ParenLevel == 0) {
+ if (ArgumentDelimiter == AsmToken::Eof &&
+ !IsOperator(Lexer.getKind()))
+ ArgumentDelimiter = AsmToken::Space;
+ break;
+ }
+ }
+ }
+
+ // HandleMacroEntry relies on not advancing the lexer here
+ // to be able to fill in the remaining default parameter values
+ if (Lexer.is(AsmToken::EndOfStatement))
+ break;
+ // Adjust the current parentheses level.
+ if (Lexer.is(AsmToken::LParen))
+ ++ParenLevel;
+ else if (Lexer.is(AsmToken::RParen) && ParenLevel)
+ --ParenLevel;
+
+ // Append the token to the current argument list.
+ MA.push_back(getTok());
+ if (AddTokens)
+ AddTokens--;
+ Lex();
+ }
+
+ Lexer.setSkipSpace(true);
+ if (ParenLevel != 0)
+ return TokError("unbalanced parentheses in macro argument");
return false;
}
-void AsmParser::HandleMacroExit() {
- // Jump to the EndOfStatement we should return to, and consume it.
- JumpToLoc(ActiveMacros.back()->ExitLoc);
- Lex();
+// Parse the macro instantiation arguments.
+bool AsmParser::ParseMacroArguments(const Macro *M, MacroArguments &A) {
+ const unsigned NParameters = M ? M->Parameters.size() : 0;
+ // Argument delimiter is initially unknown. It will be set by
+ // ParseMacroArgument()
+ AsmToken::TokenKind ArgumentDelimiter = AsmToken::Eof;
+
+ // Parse two kinds of macro invocations:
+ // - macros defined without any parameters accept an arbitrary number of them
+ // - macros defined with parameters accept at most that many of them
+ for (unsigned Parameter = 0; !NParameters || Parameter < NParameters;
+ ++Parameter) {
+ MacroArgument MA;
+
+ if (ParseMacroArgument(MA, ArgumentDelimiter))
+ return true;
- // Pop the instantiation entry.
- delete ActiveMacros.back();
- ActiveMacros.pop_back();
-}
+ if (!MA.empty() || !NParameters)
+ A.push_back(MA);
+ else if (NParameters) {
+ if (!M->Parameters[Parameter].second.empty())
+ A.push_back(M->Parameters[Parameter].second);
+ }
-static void MarkUsed(const MCExpr *Value) {
- switch (Value->getKind()) {
- case MCExpr::Binary:
- MarkUsed(static_cast<const MCBinaryExpr*>(Value)->getLHS());
- MarkUsed(static_cast<const MCBinaryExpr*>(Value)->getRHS());
- break;
- case MCExpr::Target:
- case MCExpr::Constant:
+ // At the end of the statement, fill in remaining arguments that have
+ // default values. If there aren't any, then the next argument is
+ // required but missing
+ if (Lexer.is(AsmToken::EndOfStatement)) {
+ if (NParameters && Parameter < NParameters - 1) {
+ if (M->Parameters[Parameter + 1].second.empty())
+ return TokError("macro argument '" +
+ Twine(M->Parameters[Parameter + 1].first) +
+ "' is missing");
+ else
+ continue;
+ }
+ return false;
+ }
+
+ if (Lexer.is(AsmToken::Comma))
+ Lex();
+ }
+ return TokError("Too many arguments");
+}
+
+bool AsmParser::HandleMacroEntry(StringRef Name, SMLoc NameLoc,
+ const Macro *M) {
+ // Arbitrarily limit macro nesting depth, to match 'as'. We can eliminate
+ // this, although we should protect against infinite loops.
+ if (ActiveMacros.size() == 20)
+ return TokError("macros cannot be nested more than 20 levels deep");
+
+ MacroArguments A;
+ if (ParseMacroArguments(M, A))
+ return true;
+
+ // Remove any trailing empty arguments. Do this after-the-fact as we have
+ // to keep empty arguments in the middle of the list or positionality
+ // gets off. e.g., "foo 1, , 2" vs. "foo 1, 2,"
+ while (!A.empty() && A.back().empty())
+ A.pop_back();
+
+ // Macro instantiation is lexical, unfortunately. We construct a new buffer
+ // to hold the macro body with substitutions.
+ SmallString<256> Buf;
+ StringRef Body = M->Body;
+ raw_svector_ostream OS(Buf);
+
+ if (expandMacro(OS, Body, M->Parameters, A, getTok().getLoc()))
+ return true;
+
+ // We include the .endmacro in the buffer as our queue to exit the macro
+ // instantiation.
+ OS << ".endmacro\n";
+
+ MemoryBuffer *Instantiation =
+ MemoryBuffer::getMemBufferCopy(OS.str(), "<instantiation>");
+
+ // Create the macro instantiation object and add to the current macro
+ // instantiation stack.
+ MacroInstantiation *MI = new MacroInstantiation(M, NameLoc,
+ CurBuffer,
+ getTok().getLoc(),
+ Instantiation);
+ ActiveMacros.push_back(MI);
+
+ // Jump to the macro instantiation and prime the lexer.
+ CurBuffer = SrcMgr.AddNewSourceBuffer(MI->Instantiation, SMLoc());
+ Lexer.setBuffer(SrcMgr.getMemoryBuffer(CurBuffer));
+ Lex();
+
+ return false;
+}
+
+void AsmParser::HandleMacroExit() {
+ // Jump to the EndOfStatement we should return to, and consume it.
+ JumpToLoc(ActiveMacros.back()->ExitLoc, ActiveMacros.back()->ExitBuffer);
+ Lex();
+
+ // Pop the instantiation entry.
+ delete ActiveMacros.back();
+ ActiveMacros.pop_back();
+}
+
+static bool IsUsedIn(const MCSymbol *Sym, const MCExpr *Value) {
+ switch (Value->getKind()) {
+ case MCExpr::Binary: {
+ const MCBinaryExpr *BE = static_cast<const MCBinaryExpr*>(Value);
+ return IsUsedIn(Sym, BE->getLHS()) || IsUsedIn(Sym, BE->getRHS());
break;
+ }
+ case MCExpr::Target:
+ case MCExpr::Constant:
+ return false;
case MCExpr::SymbolRef: {
- static_cast<const MCSymbolRefExpr*>(Value)->getSymbol().setUsed(true);
- break;
+ const MCSymbol &S = static_cast<const MCSymbolRefExpr*>(Value)->getSymbol();
+ if (S.isVariable())
+ return IsUsedIn(Sym, S.getVariableValue());
+ return &S == Sym;
}
case MCExpr::Unary:
- MarkUsed(static_cast<const MCUnaryExpr*>(Value)->getSubExpr());
- break;
+ return IsUsedIn(Sym, static_cast<const MCUnaryExpr*>(Value)->getSubExpr());
}
+
+ llvm_unreachable("Unknown expr kind!");
}
-bool AsmParser::ParseAssignment(StringRef Name) {
+bool AsmParser::ParseAssignment(StringRef Name, bool allow_redef,
+ bool NoDeadStrip) {
// FIXME: Use better location, we should use proper tokens.
SMLoc EqualLoc = Lexer.getLoc();
if (ParseExpression(Value))
return true;
- MarkUsed(Value);
+ // Note: we don't count b as used in "a = b". This is to allow
+ // a = b
+ // b = c
if (Lexer.isNot(AsmToken::EndOfStatement))
return TokError("unexpected token in assignment");
+ // Error on assignment to '.'.
+ if (Name == ".") {
+ return Error(EqualLoc, ("assignment to pseudo-symbol '.' is unsupported "
+ "(use '.space' or '.org').)"));
+ }
+
// Eat the end of statement marker.
Lex();
//
// FIXME: Diagnostics. Note the location of the definition as a label.
// FIXME: Diagnose assignment to protected identifier (e.g., register name).
- if (Sym->isUndefined() && !Sym->isUsed() && !Sym->isVariable())
+ if (IsUsedIn(Sym, Value))
+ return Error(EqualLoc, "Recursive use of '" + Name + "'");
+ else if (Sym->isUndefined() && !Sym->isUsed() && !Sym->isVariable())
; // Allow redefinitions of undefined symbols only used in directives.
- else if (!Sym->isUndefined() && !Sym->isAbsolute())
+ else if (Sym->isVariable() && !Sym->isUsed() && allow_redef)
+ ; // Allow redefinitions of variables that haven't yet been used.
+ else if (!Sym->isUndefined() && (!Sym->isVariable() || !allow_redef))
return Error(EqualLoc, "redefinition of '" + Name + "'");
else if (!Sym->isVariable())
return Error(EqualLoc, "invalid assignment to '" + Name + "'");
// Do the assignment.
Out.EmitAssignment(Sym, Value);
+ if (NoDeadStrip)
+ Out.EmitSymbolAttribute(Sym, MCSA_NoDeadStrip);
+
return false;
}
}
/// ParseDirectiveSet:
+/// ::= .equ identifier ',' expression
+/// ::= .equiv identifier ',' expression
/// ::= .set identifier ',' expression
-bool AsmParser::ParseDirectiveSet(StringRef IDVal) {
+bool AsmParser::ParseDirectiveSet(StringRef IDVal, bool allow_redef) {
StringRef Name;
if (ParseIdentifier(Name))
return TokError("unexpected token in '" + Twine(IDVal) + "'");
Lex();
- return ParseAssignment(Name);
+ return ParseAssignment(Name, allow_redef, true);
}
bool AsmParser::ParseEscapedString(std::string &Data) {
for (;;) {
const MCExpr *Value;
+ SMLoc ExprLoc = getLexer().getLoc();
if (ParseExpression(Value))
return true;
// Special case constant expressions to match code generator.
- if (const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(Value))
- getStreamer().EmitIntValue(MCE->getValue(), Size, DEFAULT_ADDRSPACE);
- else
+ if (const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(Value)) {
+ assert(Size <= 8 && "Invalid size");
+ uint64_t IntValue = MCE->getValue();
+ if (!isUIntN(8 * Size, IntValue) && !isIntN(8 * Size, IntValue))
+ return Error(ExprLoc, "literal value out of range for directive");
+ getStreamer().EmitIntValue(IntValue, Size, DEFAULT_ADDRSPACE);
+ } else
getStreamer().EmitValue(Value, Size, DEFAULT_ADDRSPACE);
if (getLexer().is(AsmToken::EndOfStatement))
Lex();
if (getLexer().isNot(AsmToken::Integer) &&
- getLexer().isNot(AsmToken::Real))
+ getLexer().isNot(AsmToken::Real) &&
+ getLexer().isNot(AsmToken::Identifier))
return TokError("unexpected token in directive");
// Convert to an APFloat.
APFloat Value(Semantics);
- if (Value.convertFromString(getTok().getString(),
- APFloat::rmNearestTiesToEven) ==
+ StringRef IDVal = getTok().getString();
+ if (getLexer().is(AsmToken::Identifier)) {
+ if (!IDVal.compare_lower("infinity") || !IDVal.compare_lower("inf"))
+ Value = APFloat::getInf(Semantics);
+ else if (!IDVal.compare_lower("nan"))
+ Value = APFloat::getNaN(Semantics, false, ~0);
+ else
+ return TokError("invalid floating point literal");
+ } else if (Value.convertFromString(IDVal, APFloat::rmNearestTiesToEven) ==
APFloat::opInvalidOp)
return TokError("invalid floating point literal");
if (IsNeg)
return false;
}
-/// ParseDirectiveSpace
-/// ::= .space expression [ , expression ]
-bool AsmParser::ParseDirectiveSpace() {
- CheckForValidSection();
-
- int64_t NumBytes;
- if (ParseAbsoluteExpression(NumBytes))
- return true;
-
- int64_t FillExpr = 0;
- if (getLexer().isNot(AsmToken::EndOfStatement)) {
- if (getLexer().isNot(AsmToken::Comma))
- return TokError("unexpected token in '.space' directive");
- Lex();
-
- if (ParseAbsoluteExpression(FillExpr))
- return true;
-
- if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in '.space' directive");
- }
-
- Lex();
-
- if (NumBytes <= 0)
- return TokError("invalid number of bytes in '.space' directive");
-
- // FIXME: Sometimes the fill expr is 'nop' if it isn't supplied, instead of 0.
- getStreamer().EmitFill(NumBytes, FillExpr, DEFAULT_ADDRSPACE);
-
- return false;
-}
-
/// ParseDirectiveZero
/// ::= .zero expression
bool AsmParser::ParseDirectiveZero() {
CheckForValidSection();
const MCExpr *Offset;
+ SMLoc Loc = getTok().getLoc();
if (ParseExpression(Offset))
return true;
Lex();
- // FIXME: Only limited forms of relocatable expressions are accepted here, it
- // has to be relative to the current section.
- getStreamer().EmitValueToOffset(Offset, FillExpr);
+ // Only limited forms of relocatable expressions are accepted here, it
+ // has to be relative to the current section. The streamer will return
+ // 'true' if the expression wasn't evaluatable.
+ if (getStreamer().EmitValueToOffset(Offset, FillExpr))
+ return Error(Loc, "expected assembly-time absolute expression");
return false;
}
return false;
}
+
+/// ParseDirectiveBundleAlignMode
+/// ::= {.bundle_align_mode} expression
+bool AsmParser::ParseDirectiveBundleAlignMode() {
+ CheckForValidSection();
+
+ // Expect a single argument: an expression that evaluates to a constant
+ // in the inclusive range 0-30.
+ SMLoc ExprLoc = getLexer().getLoc();
+ int64_t AlignSizePow2;
+ if (ParseAbsoluteExpression(AlignSizePow2))
+ return true;
+ else if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token after expression in"
+ " '.bundle_align_mode' directive");
+ else if (AlignSizePow2 < 0 || AlignSizePow2 > 30)
+ return Error(ExprLoc,
+ "invalid bundle alignment size (expected between 0 and 30)");
+
+ Lex();
+
+ // Because of AlignSizePow2's verified range we can safely truncate it to
+ // unsigned.
+ getStreamer().EmitBundleAlignMode(static_cast<unsigned>(AlignSizePow2));
+ return false;
+}
+
+/// ParseDirectiveBundleLock
+/// ::= {.bundle_lock} [align_to_end]
+bool AsmParser::ParseDirectiveBundleLock() {
+ CheckForValidSection();
+ bool AlignToEnd = false;
+
+ if (getLexer().isNot(AsmToken::EndOfStatement)) {
+ StringRef Option;
+ SMLoc Loc = getTok().getLoc();
+ const char *kInvalidOptionError =
+ "invalid option for '.bundle_lock' directive";
+
+ if (ParseIdentifier(Option))
+ return Error(Loc, kInvalidOptionError);
+
+ if (Option != "align_to_end")
+ return Error(Loc, kInvalidOptionError);
+ else if (getLexer().isNot(AsmToken::EndOfStatement))
+ return Error(Loc,
+ "unexpected token after '.bundle_lock' directive option");
+ AlignToEnd = true;
+ }
+
+ Lex();
+
+ getStreamer().EmitBundleLock(AlignToEnd);
+ return false;
+}
+
+/// ParseDirectiveBundleLock
+/// ::= {.bundle_lock}
+bool AsmParser::ParseDirectiveBundleUnlock() {
+ CheckForValidSection();
+
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '.bundle_unlock' directive");
+ Lex();
+
+ getStreamer().EmitBundleUnlock();
+ return false;
+}
+
/// ParseDirectiveSymbolAttribute
/// ::= { ".globl", ".weak", ... } [ identifier ( , identifier )* ]
bool AsmParser::ParseDirectiveSymbolAttribute(MCSymbolAttr Attr) {
if (getLexer().isNot(AsmToken::EndOfStatement)) {
for (;;) {
StringRef Name;
+ SMLoc Loc = getTok().getLoc();
if (ParseIdentifier(Name))
- return TokError("expected identifier in directive");
+ return Error(Loc, "expected identifier in directive");
MCSymbol *Sym = getContext().GetOrCreateSymbol(Name);
+ // Assembler local symbols don't make any sense here. Complain loudly.
+ if (Sym->isTemporary())
+ return Error(Loc, "non-local symbol required in directive");
+
getStreamer().EmitSymbolAttribute(Sym, Attr);
if (getLexer().is(AsmToken::EndOfStatement))
if (ParseAbsoluteExpression(Pow2Alignment))
return true;
+ LCOMM::LCOMMType LCOMM = Lexer.getMAI().getLCOMMDirectiveAlignmentType();
+ if (IsLocal && LCOMM == LCOMM::NoAlignment)
+ return Error(Pow2AlignmentLoc, "alignment not supported on this target");
+
// If this target takes alignments in bytes (not log) validate and convert.
- if (Lexer.getMAI().getAlignmentIsInBytes()) {
+ if ((!IsLocal && Lexer.getMAI().getCOMMDirectiveAlignmentIsInBytes()) ||
+ (IsLocal && LCOMM == LCOMM::ByteAlignment)) {
if (!isPowerOf2_64(Pow2Alignment))
return Error(Pow2AlignmentLoc, "alignment must be a power of 2");
Pow2Alignment = Log2_64(Pow2Alignment);
if (!Sym->isUndefined())
return Error(IDLoc, "invalid symbol redefinition");
- // '.lcomm' is equivalent to '.zerofill'.
// Create the Symbol as a common or local common with Size and Pow2Alignment
if (IsLocal) {
- getStreamer().EmitZerofill(Ctx.getMachOSection(
- "__DATA", "__bss", MCSectionMachO::S_ZEROFILL,
- 0, SectionKind::getBSS()),
- Sym, Size, 1 << Pow2Alignment);
+ getStreamer().EmitLocalCommonSymbol(Sym, Size, 1 << Pow2Alignment);
return false;
}
return false;
}
+/// ParseDirectiveIncbin
+/// ::= .incbin "filename"
+bool AsmParser::ParseDirectiveIncbin() {
+ if (getLexer().isNot(AsmToken::String))
+ return TokError("expected string in '.incbin' directive");
+
+ std::string Filename = getTok().getString();
+ SMLoc IncbinLoc = getLexer().getLoc();
+ Lex();
+
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '.incbin' directive");
+
+ // Strip the quotes.
+ Filename = Filename.substr(1, Filename.size()-2);
+
+ // Attempt to process the included file.
+ if (ProcessIncbinFile(Filename)) {
+ Error(IncbinLoc, "Could not find incbin file '" + Filename + "'");
+ return true;
+ }
+
+ return false;
+}
+
/// ParseDirectiveIf
/// ::= .if expression
bool AsmParser::ParseDirectiveIf(SMLoc DirectiveLoc) {
TheCondStack.push_back(TheCondState);
TheCondState.TheCond = AsmCond::IfCond;
- if(TheCondState.Ignore) {
+ if (TheCondState.Ignore) {
EatToEndOfStatement();
- }
- else {
+ } else {
int64_t ExprValue;
if (ParseAbsoluteExpression(ExprValue))
return true;
return false;
}
+/// ParseDirectiveIfb
+/// ::= .ifb string
+bool AsmParser::ParseDirectiveIfb(SMLoc DirectiveLoc, bool ExpectBlank) {
+ TheCondStack.push_back(TheCondState);
+ TheCondState.TheCond = AsmCond::IfCond;
+
+ if (TheCondState.Ignore) {
+ EatToEndOfStatement();
+ } else {
+ StringRef Str = ParseStringToEndOfStatement();
+
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '.ifb' directive");
+
+ Lex();
+
+ TheCondState.CondMet = ExpectBlank == Str.empty();
+ TheCondState.Ignore = !TheCondState.CondMet;
+ }
+
+ return false;
+}
+
+/// ParseDirectiveIfc
+/// ::= .ifc string1, string2
+bool AsmParser::ParseDirectiveIfc(SMLoc DirectiveLoc, bool ExpectEqual) {
+ TheCondStack.push_back(TheCondState);
+ TheCondState.TheCond = AsmCond::IfCond;
+
+ if (TheCondState.Ignore) {
+ EatToEndOfStatement();
+ } else {
+ StringRef Str1 = ParseStringToComma();
+
+ if (getLexer().isNot(AsmToken::Comma))
+ return TokError("unexpected token in '.ifc' directive");
+
+ Lex();
+
+ StringRef Str2 = ParseStringToEndOfStatement();
+
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '.ifc' directive");
+
+ Lex();
+
+ TheCondState.CondMet = ExpectEqual == (Str1 == Str2);
+ TheCondState.Ignore = !TheCondState.CondMet;
+ }
+
+ return false;
+}
+
+/// ParseDirectiveIfdef
+/// ::= .ifdef symbol
+bool AsmParser::ParseDirectiveIfdef(SMLoc DirectiveLoc, bool expect_defined) {
+ StringRef Name;
+ TheCondStack.push_back(TheCondState);
+ TheCondState.TheCond = AsmCond::IfCond;
+
+ if (TheCondState.Ignore) {
+ EatToEndOfStatement();
+ } else {
+ if (ParseIdentifier(Name))
+ return TokError("expected identifier after '.ifdef'");
+
+ Lex();
+
+ MCSymbol *Sym = getContext().LookupSymbol(Name);
+
+ if (expect_defined)
+ TheCondState.CondMet = (Sym != NULL && !Sym->isUndefined());
+ else
+ TheCondState.CondMet = (Sym == NULL || Sym->isUndefined());
+ TheCondState.Ignore = !TheCondState.CondMet;
+ }
+
+ return false;
+}
+
/// ParseDirectiveElseIf
/// ::= .elseif expression
bool AsmParser::ParseDirectiveElseIf(SMLoc DirectiveLoc) {
return false;
}
+void AsmParser::initializeDirectiveKindMapping() {
+ DirectiveKindMapping[".set"] = DK_SET;
+ DirectiveKindMapping[".equ"] = DK_EQU;
+ DirectiveKindMapping[".equiv"] = DK_EQUIV;
+ DirectiveKindMapping[".ascii"] = DK_ASCII;
+ DirectiveKindMapping[".asciz"] = DK_ASCIZ;
+ DirectiveKindMapping[".string"] = DK_STRING;
+ DirectiveKindMapping[".byte"] = DK_BYTE;
+ DirectiveKindMapping[".short"] = DK_SHORT;
+ DirectiveKindMapping[".value"] = DK_VALUE;
+ DirectiveKindMapping[".2byte"] = DK_2BYTE;
+ DirectiveKindMapping[".long"] = DK_LONG;
+ DirectiveKindMapping[".int"] = DK_INT;
+ DirectiveKindMapping[".4byte"] = DK_4BYTE;
+ DirectiveKindMapping[".quad"] = DK_QUAD;
+ DirectiveKindMapping[".8byte"] = DK_8BYTE;
+ DirectiveKindMapping[".single"] = DK_SINGLE;
+ DirectiveKindMapping[".float"] = DK_FLOAT;
+ DirectiveKindMapping[".double"] = DK_DOUBLE;
+ DirectiveKindMapping[".align"] = DK_ALIGN;
+ DirectiveKindMapping[".align32"] = DK_ALIGN32;
+ DirectiveKindMapping[".balign"] = DK_BALIGN;
+ DirectiveKindMapping[".balignw"] = DK_BALIGNW;
+ DirectiveKindMapping[".balignl"] = DK_BALIGNL;
+ DirectiveKindMapping[".p2align"] = DK_P2ALIGN;
+ DirectiveKindMapping[".p2alignw"] = DK_P2ALIGNW;
+ DirectiveKindMapping[".p2alignl"] = DK_P2ALIGNL;
+ DirectiveKindMapping[".org"] = DK_ORG;
+ DirectiveKindMapping[".fill"] = DK_FILL;
+ DirectiveKindMapping[".zero"] = DK_ZERO;
+ DirectiveKindMapping[".extern"] = DK_EXTERN;
+ DirectiveKindMapping[".globl"] = DK_GLOBL;
+ DirectiveKindMapping[".global"] = DK_GLOBAL;
+ DirectiveKindMapping[".indirect_symbol"] = DK_INDIRECT_SYMBOL;
+ DirectiveKindMapping[".lazy_reference"] = DK_LAZY_REFERENCE;
+ DirectiveKindMapping[".no_dead_strip"] = DK_NO_DEAD_STRIP;
+ DirectiveKindMapping[".symbol_resolver"] = DK_SYMBOL_RESOLVER;
+ DirectiveKindMapping[".private_extern"] = DK_PRIVATE_EXTERN;
+ DirectiveKindMapping[".reference"] = DK_REFERENCE;
+ DirectiveKindMapping[".weak_definition"] = DK_WEAK_DEFINITION;
+ DirectiveKindMapping[".weak_reference"] = DK_WEAK_REFERENCE;
+ DirectiveKindMapping[".weak_def_can_be_hidden"] = DK_WEAK_DEF_CAN_BE_HIDDEN;
+ DirectiveKindMapping[".comm"] = DK_COMM;
+ DirectiveKindMapping[".common"] = DK_COMMON;
+ DirectiveKindMapping[".lcomm"] = DK_LCOMM;
+ DirectiveKindMapping[".abort"] = DK_ABORT;
+ DirectiveKindMapping[".include"] = DK_INCLUDE;
+ DirectiveKindMapping[".incbin"] = DK_INCBIN;
+ DirectiveKindMapping[".code16"] = DK_CODE16;
+ DirectiveKindMapping[".code16gcc"] = DK_CODE16GCC;
+ DirectiveKindMapping[".rept"] = DK_REPT;
+ DirectiveKindMapping[".irp"] = DK_IRP;
+ DirectiveKindMapping[".irpc"] = DK_IRPC;
+ DirectiveKindMapping[".endr"] = DK_ENDR;
+ DirectiveKindMapping[".bundle_align_mode"] = DK_BUNDLE_ALIGN_MODE;
+ DirectiveKindMapping[".bundle_lock"] = DK_BUNDLE_LOCK;
+ DirectiveKindMapping[".bundle_unlock"] = DK_BUNDLE_UNLOCK;
+ DirectiveKindMapping[".if"] = DK_IF;
+ DirectiveKindMapping[".ifb"] = DK_IFB;
+ DirectiveKindMapping[".ifnb"] = DK_IFNB;
+ DirectiveKindMapping[".ifc"] = DK_IFC;
+ DirectiveKindMapping[".ifnc"] = DK_IFNC;
+ DirectiveKindMapping[".ifdef"] = DK_IFDEF;
+ DirectiveKindMapping[".ifndef"] = DK_IFNDEF;
+ DirectiveKindMapping[".ifnotdef"] = DK_IFNOTDEF;
+ DirectiveKindMapping[".elseif"] = DK_ELSEIF;
+ DirectiveKindMapping[".else"] = DK_ELSE;
+ DirectiveKindMapping[".endif"] = DK_ENDIF;
+}
+
/// ParseDirectiveFile
-/// ::= .file [number] string
+/// ::= .file [number] filename
+/// ::= .file number directory filename
bool GenericAsmParser::ParseDirectiveFile(StringRef, SMLoc DirectiveLoc) {
// FIXME: I'm not sure what this is.
int64_t FileNumber = -1;
if (getLexer().isNot(AsmToken::String))
return TokError("unexpected token in '.file' directive");
- StringRef Filename = getTok().getString();
- Filename = Filename.substr(1, Filename.size()-2);
+ // Usually the directory and filename together, otherwise just the directory.
+ StringRef Path = getTok().getString();
+ Path = Path.substr(1, Path.size()-2);
Lex();
+ StringRef Directory;
+ StringRef Filename;
+ if (getLexer().is(AsmToken::String)) {
+ if (FileNumber == -1)
+ return TokError("explicit path specified, but no file number");
+ Filename = getTok().getString();
+ Filename = Filename.substr(1, Filename.size()-2);
+ Directory = Path;
+ Lex();
+ } else {
+ Filename = Path;
+ }
+
if (getLexer().isNot(AsmToken::EndOfStatement))
return TokError("unexpected token in '.file' directive");
if (FileNumber == -1)
getStreamer().EmitFileDirective(Filename);
else {
- if (getStreamer().EmitDwarfFileDirective(FileNumber, Filename))
+ if (getContext().getGenDwarfForAssembly() == true)
+ Error(DirectiveLoc, "input can't have .file dwarf directives when -g is "
+ "used to generate dwarf debug info for assembly code");
+
+ if (getStreamer().EmitDwarfFileDirective(FileNumber, Directory, Filename))
Error(FileNumberLoc, "file number already allocated");
}
else if (Name == "epilogue_begin")
Flags |= DWARF2_FLAG_EPILOGUE_BEGIN;
else if (Name == "is_stmt") {
- SMLoc Loc = getTok().getLoc();
+ Loc = getTok().getLoc();
const MCExpr *Value;
if (getParser().ParseExpression(Value))
return true;
}
}
else if (Name == "isa") {
- SMLoc Loc = getTok().getLoc();
+ Loc = getTok().getLoc();
const MCExpr *Value;
if (getParser().ParseExpression(Value))
return true;
}
getStreamer().EmitDwarfLocDirective(FileNumber, LineNumber, ColumnPos, Flags,
- Isa, Discriminator);
+ Isa, Discriminator, StringRef());
return false;
}
return TokError("unsupported directive '" + Directive + "'");
}
-/// ParseDirectiveCFIStartProc
-/// ::= .cfi_startproc
-bool GenericAsmParser::ParseDirectiveCFIStartProc(StringRef,
- SMLoc DirectiveLoc) {
- return false;
-}
-
-/// ParseDirectiveCFIEndProc
-/// ::= .cfi_endproc
-bool GenericAsmParser::ParseDirectiveCFIEndProc(StringRef, SMLoc DirectiveLoc) {
- return false;
-}
+/// ParseDirectiveSpace
+/// ::= .space expression [ , expression ]
+bool GenericAsmParser::ParseDirectiveSpace(StringRef, SMLoc DirectiveLoc) {
+ getParser().CheckForValidSection();
-/// ParseDirectiveCFIDefCfaOffset
-/// ::= .cfi_def_cfa_offset offset
-bool GenericAsmParser::ParseDirectiveCFIDefCfaOffset(StringRef,
- SMLoc DirectiveLoc) {
- int64_t Offset = 0;
- if (getParser().ParseAbsoluteExpression(Offset))
+ int64_t NumBytes;
+ if (getParser().ParseAbsoluteExpression(NumBytes))
return true;
- return false;
-}
+ int64_t FillExpr = 0;
+ if (getLexer().isNot(AsmToken::EndOfStatement)) {
+ if (getLexer().isNot(AsmToken::Comma))
+ return TokError("unexpected token in '.space' directive");
+ Lex();
-/// ParseDirectiveCFIDefCfaRegister
-/// ::= .cfi_def_cfa_register register
-bool GenericAsmParser::ParseDirectiveCFIDefCfaRegister(StringRef,
- SMLoc DirectiveLoc) {
- int64_t Register = 0;
- if (getParser().ParseAbsoluteExpression(Register))
- return true;
- return false;
-}
+ if (getParser().ParseAbsoluteExpression(FillExpr))
+ return true;
+
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '.space' directive");
+ }
+
+ Lex();
+
+ if (NumBytes <= 0)
+ return TokError("invalid number of bytes in '.space' directive");
+
+ // FIXME: Sometimes the fill expr is 'nop' if it isn't supplied, instead of 0.
+ getStreamer().EmitFill(NumBytes, FillExpr, DEFAULT_ADDRSPACE);
+
+ return false;
+}
+
+/// ParseDirectiveCFISections
+/// ::= .cfi_sections section [, section]
+bool GenericAsmParser::ParseDirectiveCFISections(StringRef,
+ SMLoc DirectiveLoc) {
+ StringRef Name;
+ bool EH = false;
+ bool Debug = false;
+
+ if (getParser().ParseIdentifier(Name))
+ return TokError("Expected an identifier");
+
+ if (Name == ".eh_frame")
+ EH = true;
+ else if (Name == ".debug_frame")
+ Debug = true;
+
+ if (getLexer().is(AsmToken::Comma)) {
+ Lex();
+
+ if (getParser().ParseIdentifier(Name))
+ return TokError("Expected an identifier");
+
+ if (Name == ".eh_frame")
+ EH = true;
+ else if (Name == ".debug_frame")
+ Debug = true;
+ }
+
+ getStreamer().EmitCFISections(EH, Debug);
+
+ return false;
+}
+
+/// ParseDirectiveCFIStartProc
+/// ::= .cfi_startproc
+bool GenericAsmParser::ParseDirectiveCFIStartProc(StringRef,
+ SMLoc DirectiveLoc) {
+ getStreamer().EmitCFIStartProc();
+ return false;
+}
+
+/// ParseDirectiveCFIEndProc
+/// ::= .cfi_endproc
+bool GenericAsmParser::ParseDirectiveCFIEndProc(StringRef, SMLoc DirectiveLoc) {
+ getStreamer().EmitCFIEndProc();
+ return false;
+}
+
+/// ParseRegisterOrRegisterNumber - parse register name or number.
+bool GenericAsmParser::ParseRegisterOrRegisterNumber(int64_t &Register,
+ SMLoc DirectiveLoc) {
+ unsigned RegNo;
+
+ if (getLexer().isNot(AsmToken::Integer)) {
+ if (getParser().getTargetParser().ParseRegister(RegNo, DirectiveLoc,
+ DirectiveLoc))
+ return true;
+ Register = getContext().getRegisterInfo().getDwarfRegNum(RegNo, true);
+ } else
+ return getParser().ParseAbsoluteExpression(Register);
+
+ return false;
+}
+
+/// ParseDirectiveCFIDefCfa
+/// ::= .cfi_def_cfa register, offset
+bool GenericAsmParser::ParseDirectiveCFIDefCfa(StringRef,
+ SMLoc DirectiveLoc) {
+ int64_t Register = 0;
+ if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
+ return true;
+
+ if (getLexer().isNot(AsmToken::Comma))
+ return TokError("unexpected token in directive");
+ Lex();
+
+ int64_t Offset = 0;
+ if (getParser().ParseAbsoluteExpression(Offset))
+ return true;
+
+ getStreamer().EmitCFIDefCfa(Register, Offset);
+ return false;
+}
+
+/// ParseDirectiveCFIDefCfaOffset
+/// ::= .cfi_def_cfa_offset offset
+bool GenericAsmParser::ParseDirectiveCFIDefCfaOffset(StringRef,
+ SMLoc DirectiveLoc) {
+ int64_t Offset = 0;
+ if (getParser().ParseAbsoluteExpression(Offset))
+ return true;
+
+ getStreamer().EmitCFIDefCfaOffset(Offset);
+ return false;
+}
+
+/// ParseDirectiveCFIAdjustCfaOffset
+/// ::= .cfi_adjust_cfa_offset adjustment
+bool GenericAsmParser::ParseDirectiveCFIAdjustCfaOffset(StringRef,
+ SMLoc DirectiveLoc) {
+ int64_t Adjustment = 0;
+ if (getParser().ParseAbsoluteExpression(Adjustment))
+ return true;
+
+ getStreamer().EmitCFIAdjustCfaOffset(Adjustment);
+ return false;
+}
+
+/// ParseDirectiveCFIDefCfaRegister
+/// ::= .cfi_def_cfa_register register
+bool GenericAsmParser::ParseDirectiveCFIDefCfaRegister(StringRef,
+ SMLoc DirectiveLoc) {
+ int64_t Register = 0;
+ if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
+ return true;
+
+ getStreamer().EmitCFIDefCfaRegister(Register);
+ return false;
+}
/// ParseDirectiveCFIOffset
-/// ::= .cfi_off register, offset
+/// ::= .cfi_offset register, offset
bool GenericAsmParser::ParseDirectiveCFIOffset(StringRef, SMLoc DirectiveLoc) {
int64_t Register = 0;
int64_t Offset = 0;
- if (getParser().ParseAbsoluteExpression(Register))
+
+ if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
return true;
if (getLexer().isNot(AsmToken::Comma))
if (getParser().ParseAbsoluteExpression(Offset))
return true;
+ getStreamer().EmitCFIOffset(Register, Offset);
return false;
}
+/// ParseDirectiveCFIRelOffset
+/// ::= .cfi_rel_offset register, offset
+bool GenericAsmParser::ParseDirectiveCFIRelOffset(StringRef,
+ SMLoc DirectiveLoc) {
+ int64_t Register = 0;
+
+ if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
+ return true;
+
+ if (getLexer().isNot(AsmToken::Comma))
+ return TokError("unexpected token in directive");
+ Lex();
+
+ int64_t Offset = 0;
+ if (getParser().ParseAbsoluteExpression(Offset))
+ return true;
+
+ getStreamer().EmitCFIRelOffset(Register, Offset);
+ return false;
+}
+
+static bool isValidEncoding(int64_t Encoding) {
+ if (Encoding & ~0xff)
+ return false;
+
+ if (Encoding == dwarf::DW_EH_PE_omit)
+ return true;
+
+ const unsigned Format = Encoding & 0xf;
+ if (Format != dwarf::DW_EH_PE_absptr && Format != dwarf::DW_EH_PE_udata2 &&
+ Format != dwarf::DW_EH_PE_udata4 && Format != dwarf::DW_EH_PE_udata8 &&
+ Format != dwarf::DW_EH_PE_sdata2 && Format != dwarf::DW_EH_PE_sdata4 &&
+ Format != dwarf::DW_EH_PE_sdata8 && Format != dwarf::DW_EH_PE_signed)
+ return false;
+
+ const unsigned Application = Encoding & 0x70;
+ if (Application != dwarf::DW_EH_PE_absptr &&
+ Application != dwarf::DW_EH_PE_pcrel)
+ return false;
+
+ return true;
+}
+
/// ParseDirectiveCFIPersonalityOrLsda
/// ::= .cfi_personality encoding, [symbol_name]
/// ::= .cfi_lsda encoding, [symbol_name]
-bool GenericAsmParser::ParseDirectiveCFIPersonalityOrLsda(StringRef,
+bool GenericAsmParser::ParseDirectiveCFIPersonalityOrLsda(StringRef IDVal,
SMLoc DirectiveLoc) {
int64_t Encoding = 0;
if (getParser().ParseAbsoluteExpression(Encoding))
return true;
- if (Encoding == 255)
+ if (Encoding == dwarf::DW_EH_PE_omit)
return false;
+ if (!isValidEncoding(Encoding))
+ return TokError("unsupported encoding.");
+
if (getLexer().isNot(AsmToken::Comma))
return TokError("unexpected token in directive");
Lex();
StringRef Name;
if (getParser().ParseIdentifier(Name))
return TokError("expected identifier in directive");
+
+ MCSymbol *Sym = getContext().GetOrCreateSymbol(Name);
+
+ if (IDVal == ".cfi_personality")
+ getStreamer().EmitCFIPersonality(Sym, Encoding);
+ else {
+ assert(IDVal == ".cfi_lsda");
+ getStreamer().EmitCFILsda(Sym, Encoding);
+ }
+ return false;
+}
+
+/// ParseDirectiveCFIRememberState
+/// ::= .cfi_remember_state
+bool GenericAsmParser::ParseDirectiveCFIRememberState(StringRef IDVal,
+ SMLoc DirectiveLoc) {
+ getStreamer().EmitCFIRememberState();
+ return false;
+}
+
+/// ParseDirectiveCFIRestoreState
+/// ::= .cfi_remember_state
+bool GenericAsmParser::ParseDirectiveCFIRestoreState(StringRef IDVal,
+ SMLoc DirectiveLoc) {
+ getStreamer().EmitCFIRestoreState();
+ return false;
+}
+
+/// ParseDirectiveCFISameValue
+/// ::= .cfi_same_value register
+bool GenericAsmParser::ParseDirectiveCFISameValue(StringRef IDVal,
+ SMLoc DirectiveLoc) {
+ int64_t Register = 0;
+
+ if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
+ return true;
+
+ getStreamer().EmitCFISameValue(Register);
+
+ return false;
+}
+
+/// ParseDirectiveCFIRestore
+/// ::= .cfi_restore register
+bool GenericAsmParser::ParseDirectiveCFIRestore(StringRef IDVal,
+ SMLoc DirectiveLoc) {
+ int64_t Register = 0;
+ if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
+ return true;
+
+ getStreamer().EmitCFIRestore(Register);
+
+ return false;
+}
+
+/// ParseDirectiveCFIEscape
+/// ::= .cfi_escape expression[,...]
+bool GenericAsmParser::ParseDirectiveCFIEscape(StringRef IDVal,
+ SMLoc DirectiveLoc) {
+ std::string Values;
+ int64_t CurrValue;
+ if (getParser().ParseAbsoluteExpression(CurrValue))
+ return true;
+
+ Values.push_back((uint8_t)CurrValue);
+
+ while (getLexer().is(AsmToken::Comma)) {
+ Lex();
+
+ if (getParser().ParseAbsoluteExpression(CurrValue))
+ return true;
+
+ Values.push_back((uint8_t)CurrValue);
+ }
+
+ getStreamer().EmitCFIEscape(Values);
+ return false;
+}
+
+/// ParseDirectiveCFISignalFrame
+/// ::= .cfi_signal_frame
+bool GenericAsmParser::ParseDirectiveCFISignalFrame(StringRef Directive,
+ SMLoc DirectiveLoc) {
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return Error(getLexer().getLoc(),
+ "unexpected token in '" + Directive + "' directive");
+
+ getStreamer().EmitCFISignalFrame();
+
+ return false;
+}
+
+/// ParseDirectiveCFIUndefined
+/// ::= .cfi_undefined register
+bool GenericAsmParser::ParseDirectiveCFIUndefined(StringRef Directive,
+ SMLoc DirectiveLoc) {
+ int64_t Register = 0;
+
+ if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
+ return true;
+
+ getStreamer().EmitCFIUndefined(Register);
+
+ return false;
+}
+
+/// ParseDirectiveCFIRegister
+/// ::= .cfi_register register, register
+bool GenericAsmParser::ParseDirectiveCFIRegister(StringRef Directive,
+ SMLoc DirectiveLoc) {
+ int64_t Register1 = 0;
+
+ if (ParseRegisterOrRegisterNumber(Register1, DirectiveLoc))
+ return true;
+
+ if (getLexer().isNot(AsmToken::Comma))
+ return TokError("unexpected token in directive");
+ Lex();
+
+ int64_t Register2 = 0;
+
+ if (ParseRegisterOrRegisterNumber(Register2, DirectiveLoc))
+ return true;
+
+ getStreamer().EmitCFIRegister(Register1, Register2);
+
return false;
}
}
/// ParseDirectiveMacro
-/// ::= .macro name
+/// ::= .macro name [parameters]
bool GenericAsmParser::ParseDirectiveMacro(StringRef Directive,
SMLoc DirectiveLoc) {
StringRef Name;
if (getParser().ParseIdentifier(Name))
- return TokError("expected identifier in directive");
+ return TokError("expected identifier in '.macro' directive");
- if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in '.macro' directive");
+ MacroParameters Parameters;
+ // Argument delimiter is initially unknown. It will be set by
+ // ParseMacroArgument()
+ AsmToken::TokenKind ArgumentDelimiter = AsmToken::Eof;
+ if (getLexer().isNot(AsmToken::EndOfStatement)) {
+ for (;;) {
+ MacroParameter Parameter;
+ if (getParser().ParseIdentifier(Parameter.first))
+ return TokError("expected identifier in '.macro' directive");
+
+ if (getLexer().is(AsmToken::Equal)) {
+ Lex();
+ if (getParser().ParseMacroArgument(Parameter.second, ArgumentDelimiter))
+ return true;
+ }
+
+ Parameters.push_back(Parameter);
+
+ if (getLexer().is(AsmToken::Comma))
+ Lex();
+ else if (getLexer().is(AsmToken::EndOfStatement))
+ break;
+ }
+ }
// Eat the end of statement.
Lex();
const char *BodyStart = StartToken.getLoc().getPointer();
const char *BodyEnd = EndToken.getLoc().getPointer();
StringRef Body = StringRef(BodyStart, BodyEnd - BodyStart);
- getParser().MacroMap[Name] = new Macro(Name, Body);
+ getParser().MacroMap[Name] = new Macro(Name, Body, Parameters);
return false;
}
/// ::= .endm
/// ::= .endmacro
bool GenericAsmParser::ParseDirectiveEndMacro(StringRef Directive,
- SMLoc DirectiveLoc) {
+ SMLoc DirectiveLoc) {
if (getLexer().isNot(AsmToken::EndOfStatement))
return TokError("unexpected token in '" + Directive + "' directive");
"no current macro definition");
}
+/// ParseDirectivePurgeMacro
+/// ::= .purgem
+bool GenericAsmParser::ParseDirectivePurgeMacro(StringRef Directive,
+ SMLoc DirectiveLoc) {
+ StringRef Name;
+ if (getParser().ParseIdentifier(Name))
+ return TokError("expected identifier in '.purgem' directive");
+
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '.purgem' directive");
+
+ StringMap<Macro*>::iterator I = getParser().MacroMap.find(Name);
+ if (I == getParser().MacroMap.end())
+ return Error(DirectiveLoc, "macro '" + Name + "' is not defined");
+
+ // Undefine the macro.
+ delete I->getValue();
+ getParser().MacroMap.erase(I);
+ return false;
+}
+
bool GenericAsmParser::ParseDirectiveLEB128(StringRef DirName, SMLoc) {
getParser().CheckForValidSection();
return false;
}
+Macro *AsmParser::ParseMacroLikeBody(SMLoc DirectiveLoc) {
+ AsmToken EndToken, StartToken = getTok();
+
+ unsigned NestLevel = 0;
+ for (;;) {
+ // Check whether we have reached the end of the file.
+ if (getLexer().is(AsmToken::Eof)) {
+ Error(DirectiveLoc, "no matching '.endr' in definition");
+ return 0;
+ }
+
+ if (Lexer.is(AsmToken::Identifier) &&
+ (getTok().getIdentifier() == ".rept")) {
+ ++NestLevel;
+ }
+
+ // Otherwise, check whether we have reached the .endr.
+ if (Lexer.is(AsmToken::Identifier) &&
+ getTok().getIdentifier() == ".endr") {
+ if (NestLevel == 0) {
+ EndToken = getTok();
+ Lex();
+ if (Lexer.isNot(AsmToken::EndOfStatement)) {
+ TokError("unexpected token in '.endr' directive");
+ return 0;
+ }
+ break;
+ }
+ --NestLevel;
+ }
+
+ // Otherwise, scan till the end of the statement.
+ EatToEndOfStatement();
+ }
+
+ const char *BodyStart = StartToken.getLoc().getPointer();
+ const char *BodyEnd = EndToken.getLoc().getPointer();
+ StringRef Body = StringRef(BodyStart, BodyEnd - BodyStart);
+
+ // We Are Anonymous.
+ StringRef Name;
+ MacroParameters Parameters;
+ return new Macro(Name, Body, Parameters);
+}
+
+void AsmParser::InstantiateMacroLikeBody(Macro *M, SMLoc DirectiveLoc,
+ raw_svector_ostream &OS) {
+ OS << ".endr\n";
+
+ MemoryBuffer *Instantiation =
+ MemoryBuffer::getMemBufferCopy(OS.str(), "<instantiation>");
+
+ // Create the macro instantiation object and add to the current macro
+ // instantiation stack.
+ MacroInstantiation *MI = new MacroInstantiation(M, DirectiveLoc,
+ CurBuffer,
+ getTok().getLoc(),
+ Instantiation);
+ ActiveMacros.push_back(MI);
+
+ // Jump to the macro instantiation and prime the lexer.
+ CurBuffer = SrcMgr.AddNewSourceBuffer(MI->Instantiation, SMLoc());
+ Lexer.setBuffer(SrcMgr.getMemoryBuffer(CurBuffer));
+ Lex();
+}
+
+bool AsmParser::ParseDirectiveRept(SMLoc DirectiveLoc) {
+ int64_t Count;
+ if (ParseAbsoluteExpression(Count))
+ return TokError("unexpected token in '.rept' directive");
+
+ if (Count < 0)
+ return TokError("Count is negative");
+
+ if (Lexer.isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '.rept' directive");
+
+ // Eat the end of statement.
+ Lex();
+
+ // Lex the rept definition.
+ Macro *M = ParseMacroLikeBody(DirectiveLoc);
+ if (!M)
+ return true;
+
+ // Macro instantiation is lexical, unfortunately. We construct a new buffer
+ // to hold the macro body with substitutions.
+ SmallString<256> Buf;
+ MacroParameters Parameters;
+ MacroArguments A;
+ raw_svector_ostream OS(Buf);
+ while (Count--) {
+ if (expandMacro(OS, M->Body, Parameters, A, getTok().getLoc()))
+ return true;
+ }
+ InstantiateMacroLikeBody(M, DirectiveLoc, OS);
+
+ return false;
+}
+
+/// ParseDirectiveIrp
+/// ::= .irp symbol,values
+bool AsmParser::ParseDirectiveIrp(SMLoc DirectiveLoc) {
+ MacroParameters Parameters;
+ MacroParameter Parameter;
+
+ if (ParseIdentifier(Parameter.first))
+ return TokError("expected identifier in '.irp' directive");
+
+ Parameters.push_back(Parameter);
+
+ if (Lexer.isNot(AsmToken::Comma))
+ return TokError("expected comma in '.irp' directive");
+
+ Lex();
+
+ MacroArguments A;
+ if (ParseMacroArguments(0, A))
+ return true;
+
+ // Eat the end of statement.
+ Lex();
+
+ // Lex the irp definition.
+ Macro *M = ParseMacroLikeBody(DirectiveLoc);
+ if (!M)
+ return true;
+
+ // Macro instantiation is lexical, unfortunately. We construct a new buffer
+ // to hold the macro body with substitutions.
+ SmallString<256> Buf;
+ raw_svector_ostream OS(Buf);
+
+ for (MacroArguments::iterator i = A.begin(), e = A.end(); i != e; ++i) {
+ MacroArguments Args;
+ Args.push_back(*i);
+
+ if (expandMacro(OS, M->Body, Parameters, Args, getTok().getLoc()))
+ return true;
+ }
+
+ InstantiateMacroLikeBody(M, DirectiveLoc, OS);
+
+ return false;
+}
+
+/// ParseDirectiveIrpc
+/// ::= .irpc symbol,values
+bool AsmParser::ParseDirectiveIrpc(SMLoc DirectiveLoc) {
+ MacroParameters Parameters;
+ MacroParameter Parameter;
+
+ if (ParseIdentifier(Parameter.first))
+ return TokError("expected identifier in '.irpc' directive");
+
+ Parameters.push_back(Parameter);
+
+ if (Lexer.isNot(AsmToken::Comma))
+ return TokError("expected comma in '.irpc' directive");
+
+ Lex();
+
+ MacroArguments A;
+ if (ParseMacroArguments(0, A))
+ return true;
+
+ if (A.size() != 1 || A.front().size() != 1)
+ return TokError("unexpected token in '.irpc' directive");
+
+ // Eat the end of statement.
+ Lex();
+
+ // Lex the irpc definition.
+ Macro *M = ParseMacroLikeBody(DirectiveLoc);
+ if (!M)
+ return true;
+
+ // Macro instantiation is lexical, unfortunately. We construct a new buffer
+ // to hold the macro body with substitutions.
+ SmallString<256> Buf;
+ raw_svector_ostream OS(Buf);
+
+ StringRef Values = A.front().front().getString();
+ std::size_t I, End = Values.size();
+ for (I = 0; I < End; ++I) {
+ MacroArgument Arg;
+ Arg.push_back(AsmToken(AsmToken::Identifier, Values.slice(I, I+1)));
+
+ MacroArguments Args;
+ Args.push_back(Arg);
+
+ if (expandMacro(OS, M->Body, Parameters, Args, getTok().getLoc()))
+ return true;
+ }
+
+ InstantiateMacroLikeBody(M, DirectiveLoc, OS);
+
+ return false;
+}
+
+bool AsmParser::ParseDirectiveEndr(SMLoc DirectiveLoc) {
+ if (ActiveMacros.empty())
+ return TokError("unmatched '.endr' directive");
+
+ // The only .repl that should get here are the ones created by
+ // InstantiateMacroLikeBody.
+ assert(getLexer().is(AsmToken::EndOfStatement));
+
+ HandleMacroExit();
+ return false;
+}
+
+bool AsmParser::ParseDirectiveEmit(SMLoc IDLoc, ParseStatementInfo &Info) {
+ const MCExpr *Value;
+ SMLoc ExprLoc = getLexer().getLoc();
+ if (ParseExpression(Value))
+ return true;
+ const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(Value);
+ if (!MCE)
+ return Error(ExprLoc, "unexpected expression in _emit");
+ uint64_t IntValue = MCE->getValue();
+ if (!isUIntN(8, IntValue) && !isIntN(8, IntValue))
+ return Error(ExprLoc, "literal value out of range for directive");
+
+ Info.AsmRewrites->push_back(AsmRewrite(AOK_Emit, IDLoc, 5));
+ return false;
+}
+
+bool AsmParser::ParseMSInlineAsm(void *AsmLoc, std::string &AsmString,
+ unsigned &NumOutputs, unsigned &NumInputs,
+ SmallVectorImpl<std::pair<void *, bool> > &OpDecls,
+ SmallVectorImpl<std::string> &Constraints,
+ SmallVectorImpl<std::string> &Clobbers,
+ const MCInstrInfo *MII,
+ const MCInstPrinter *IP,
+ MCAsmParserSemaCallback &SI) {
+ SmallVector<void *, 4> InputDecls;
+ SmallVector<void *, 4> OutputDecls;
+ SmallVector<bool, 4> InputDeclsAddressOf;
+ SmallVector<bool, 4> OutputDeclsAddressOf;
+ SmallVector<std::string, 4> InputConstraints;
+ SmallVector<std::string, 4> OutputConstraints;
+ std::set<std::string> ClobberRegs;
+
+ SmallVector<struct AsmRewrite, 4> AsmStrRewrites;
+
+ // Prime the lexer.
+ Lex();
+
+ // While we have input, parse each statement.
+ unsigned InputIdx = 0;
+ unsigned OutputIdx = 0;
+ while (getLexer().isNot(AsmToken::Eof)) {
+ ParseStatementInfo Info(&AsmStrRewrites);
+ if (ParseStatement(Info))
+ return true;
+
+ if (Info.ParseError)
+ return true;
+
+ if (Info.Opcode != ~0U) {
+ const MCInstrDesc &Desc = MII->get(Info.Opcode);
+
+ // Build the list of clobbers, outputs and inputs.
+ for (unsigned i = 1, e = Info.ParsedOperands.size(); i != e; ++i) {
+ MCParsedAsmOperand *Operand = Info.ParsedOperands[i];
+
+ // Immediate.
+ if (Operand->isImm()) {
+ if (Operand->needAsmRewrite())
+ AsmStrRewrites.push_back(AsmRewrite(AOK_ImmPrefix,
+ Operand->getStartLoc()));
+ continue;
+ }
+
+ // Register operand.
+ if (Operand->isReg() && !Operand->needAddressOf()) {
+ unsigned NumDefs = Desc.getNumDefs();
+ // Clobber.
+ if (NumDefs && Operand->getMCOperandNum() < NumDefs) {
+ std::string Reg;
+ raw_string_ostream OS(Reg);
+ IP->printRegName(OS, Operand->getReg());
+ ClobberRegs.insert(StringRef(OS.str()));
+ }
+ continue;
+ }
+
+ // Expr/Input or Output.
+ unsigned Size;
+ bool IsVarDecl;
+ void *OpDecl = SI.LookupInlineAsmIdentifier(Operand->getName(), AsmLoc,
+ Size, IsVarDecl);
+ if (OpDecl) {
+ bool isOutput = (i == 1) && Desc.mayStore();
+ if (Operand->isMem() && Operand->needSizeDirective())
+ AsmStrRewrites.push_back(AsmRewrite(AOK_SizeDirective,
+ Operand->getStartLoc(),
+ /*Len*/0,
+ Operand->getMemSize()));
+ if (isOutput) {
+ std::string Constraint = "=";
+ ++InputIdx;
+ OutputDecls.push_back(OpDecl);
+ OutputDeclsAddressOf.push_back(Operand->needAddressOf());
+ Constraint += Operand->getConstraint().str();
+ OutputConstraints.push_back(Constraint);
+ AsmStrRewrites.push_back(AsmRewrite(AOK_Output,
+ Operand->getStartLoc(),
+ Operand->getNameLen()));
+ } else {
+ InputDecls.push_back(OpDecl);
+ InputDeclsAddressOf.push_back(Operand->needAddressOf());
+ InputConstraints.push_back(Operand->getConstraint().str());
+ AsmStrRewrites.push_back(AsmRewrite(AOK_Input,
+ Operand->getStartLoc(),
+ Operand->getNameLen()));
+ }
+ }
+ }
+ }
+ }
+
+ // Set the number of Outputs and Inputs.
+ NumOutputs = OutputDecls.size();
+ NumInputs = InputDecls.size();
+
+ // Set the unique clobbers.
+ for (std::set<std::string>::iterator I = ClobberRegs.begin(),
+ E = ClobberRegs.end(); I != E; ++I)
+ Clobbers.push_back(*I);
+
+ // Merge the various outputs and inputs. Output are expected first.
+ if (NumOutputs || NumInputs) {
+ unsigned NumExprs = NumOutputs + NumInputs;
+ OpDecls.resize(NumExprs);
+ Constraints.resize(NumExprs);
+ // FIXME: Constraints are hard coded to 'm', but we need an 'r'
+ // constraint for addressof. This needs to be cleaned up!
+ for (unsigned i = 0; i < NumOutputs; ++i) {
+ OpDecls[i] = std::make_pair(OutputDecls[i], OutputDeclsAddressOf[i]);
+ Constraints[i] = OutputDeclsAddressOf[i] ? "=r" : OutputConstraints[i];
+ }
+ for (unsigned i = 0, j = NumOutputs; i < NumInputs; ++i, ++j) {
+ OpDecls[j] = std::make_pair(InputDecls[i], InputDeclsAddressOf[i]);
+ Constraints[j] = InputDeclsAddressOf[i] ? "r" : InputConstraints[i];
+ }
+ }
+
+ // Build the IR assembly string.
+ std::string AsmStringIR;
+ AsmRewriteKind PrevKind = AOK_Imm;
+ raw_string_ostream OS(AsmStringIR);
+ const char *Start = SrcMgr.getMemoryBuffer(0)->getBufferStart();
+ for (SmallVectorImpl<struct AsmRewrite>::iterator
+ I = AsmStrRewrites.begin(), E = AsmStrRewrites.end(); I != E; ++I) {
+ const char *Loc = (*I).Loc.getPointer();
+
+ AsmRewriteKind Kind = (*I).Kind;
+
+ // Emit everything up to the immediate/expression. If the previous rewrite
+ // was a size directive, then this has already been done.
+ if (PrevKind != AOK_SizeDirective)
+ OS << StringRef(Start, Loc - Start);
+ PrevKind = Kind;
+
+ // Skip the original expression.
+ if (Kind == AOK_Skip) {
+ Start = Loc + (*I).Len;
+ continue;
+ }
+
+ // Rewrite expressions in $N notation.
+ switch (Kind) {
+ default: break;
+ case AOK_Imm:
+ OS << Twine("$$");
+ OS << (*I).Val;
+ break;
+ case AOK_ImmPrefix:
+ OS << Twine("$$");
+ break;
+ case AOK_Input:
+ OS << '$';
+ OS << InputIdx++;
+ break;
+ case AOK_Output:
+ OS << '$';
+ OS << OutputIdx++;
+ break;
+ case AOK_SizeDirective:
+ switch((*I).Val) {
+ default: break;
+ case 8: OS << "byte ptr "; break;
+ case 16: OS << "word ptr "; break;
+ case 32: OS << "dword ptr "; break;
+ case 64: OS << "qword ptr "; break;
+ case 80: OS << "xword ptr "; break;
+ case 128: OS << "xmmword ptr "; break;
+ case 256: OS << "ymmword ptr "; break;
+ }
+ break;
+ case AOK_Emit:
+ OS << ".byte";
+ break;
+ case AOK_DotOperator:
+ OS << (*I).Val;
+ break;
+ }
+
+ // Skip the original expression.
+ if (Kind != AOK_SizeDirective)
+ Start = Loc + (*I).Len;
+ }
+
+ // Emit the remainder of the asm string.
+ const char *AsmEnd = SrcMgr.getMemoryBuffer(0)->getBufferEnd();
+ if (Start != AsmEnd)
+ OS << StringRef(Start, AsmEnd - Start);
+
+ AsmString = OS.str();
+ return false;
+}
/// \brief Create an MCAsmParser instance.
-MCAsmParser *llvm::createMCAsmParser(const Target &T, SourceMgr &SM,
+MCAsmParser *llvm::createMCAsmParser(SourceMgr &SM,
MCContext &C, MCStreamer &Out,
const MCAsmInfo &MAI) {
- return new AsmParser(T, SM, C, Out, MAI);
+ return new AsmParser(SM, C, Out, MAI);
}
projects / oota-llvm.git / blobdiff