#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/Support/SourceMgr.h"
#include "llvm/Support/raw_ostream.h"
#include <cctype>
+#include <set>
+#include <string>
#include <vector>
using namespace llvm;
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;
+/// \brief Helper types for tracking macro definitions.
+typedef std::vector<AsmToken> MCAsmMacroArgument;
+typedef std::vector<MCAsmMacroArgument> MCAsmMacroArguments;
+typedef std::pair<StringRef, MCAsmMacroArgument> MCAsmMacroParameter;
+typedef std::vector<MCAsmMacroParameter> MCAsmMacroParameters;
-struct Macro {
+struct MCAsmMacro {
StringRef Name;
StringRef Body;
- std::vector<StringRef> Parameters;
+ MCAsmMacroParameters Parameters;
public:
- Macro(StringRef N, StringRef B, const std::vector<StringRef> &P) :
+ MCAsmMacro(StringRef N, StringRef B, const MCAsmMacroParameters &P) :
Name(N), Body(B), Parameters(P) {}
+
+ MCAsmMacro(const MCAsmMacro& Other)
+ : Name(Other.Name), Body(Other.Body), Parameters(Other.Parameters) {}
};
/// \brief Helper class for storing information about an active macro
/// instantiation.
struct MacroInstantiation {
/// The macro being instantiated.
- const Macro *TheMacro;
+ const MCAsmMacro *TheMacro;
/// The macro instantiation with substitutions.
MemoryBuffer *Instantiation;
/// 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,
+ MacroInstantiation(const MCAsmMacro *M, SMLoc IL, int EB, SMLoc EL,
MemoryBuffer *I);
};
+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;
SourceMgr &SrcMgr;
SourceMgr::DiagHandlerTy SavedDiagHandler;
void *SavedDiagContext;
- MCAsmParserExtension *GenericParser;
MCAsmParserExtension *PlatformParser;
/// This is the current buffer index we're lexing from as managed by the
AsmCond TheCondState;
std::vector<AsmCond> TheCondStack;
- /// DirectiveMap - This is a table handlers for directives. Each handler is
- /// invoked after the directive identifier is read and is responsible for
- /// parsing and validating the rest of the directive. The handler is passed
- /// in the directive name and the location of the directive keyword.
- StringMap<std::pair<MCAsmParserExtension*, DirectiveHandler> > DirectiveMap;
+ /// ExtensionDirectiveMap - maps directive names to handler methods in parser
+ /// extensions. Extensions register themselves in this map by calling
+ /// AddDirectiveHandler.
+ StringMap<ExtensionDirectiveHandler> ExtensionDirectiveMap;
/// MacroMap - Map of currently defined macros.
- StringMap<Macro*> MacroMap;
+ StringMap<MCAsmMacro*> MacroMap;
/// ActiveMacros - Stack of active macro instantiations.
std::vector<MacroInstantiation*> ActiveMacros;
/// Boolean tracking whether macro substitution is enabled.
- unsigned MacrosEnabled : 1;
+ unsigned MacrosEnabledFlag : 1;
/// Flag tracking whether any errors have been encountered.
unsigned HadError : 1;
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(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) {
- DirectiveMap[Directive] = std::make_pair(Object, Handler);
+ virtual void AddDirectiveHandler(StringRef Directive,
+ ExtensionDirectiveHandler Handler) {
+ ExtensionDirectiveMap[Directive] = Handler;
}
public:
virtual MCAsmLexer &getLexer() { return Lexer; }
virtual MCContext &getContext() { return Ctx; }
virtual MCStreamer &getStreamer() { return Out; }
- virtual unsigned getAssemblerDialect() {
+ virtual unsigned getAssemblerDialect() {
if (AssemblerDialect == ~0U)
- return MAI.getAssemblerDialect();
+ return MAI.getAssemblerDialect();
else
return AssemblerDialect;
}
virtual bool Error(SMLoc L, const Twine &Msg,
ArrayRef<SMRange> Ranges = ArrayRef<SMRange>());
- const AsmToken &Lex();
+ virtual const AsmToken &Lex();
+
+ void setParsingInlineAsm(bool V) { ParsingInlineAsm = V; }
+ bool isParsingInlineAsm() { return ParsingInlineAsm; }
+
+ 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);
virtual bool ParseParenExpression(const MCExpr *&Res, SMLoc &EndLoc);
virtual bool ParseAbsoluteExpression(int64_t &Res);
+ /// ParseIdentifier - Parse an identifier or string (as a quoted identifier)
+ /// and set \p Res to the identifier contents.
+ virtual bool ParseIdentifier(StringRef &Res);
+ virtual void EatToEndOfStatement();
+
+ virtual void CheckForValidSection();
/// }
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 std::vector<StringRef> &Parameters,
- const std::vector<MacroArgument> &A,
+ const MCAsmMacroParameters &Parameters,
+ const MCAsmMacroArguments &A,
const SMLoc &L);
+
+ /// \brief Are macros enabled in the parser?
+ bool MacrosEnabled() {return MacrosEnabledFlag;}
+
+ /// \brief Control a flag in the parser that enables or disables macros.
+ void SetMacrosEnabled(bool Flag) {MacrosEnabledFlag = Flag;}
+
+ /// \brief Lookup a previously defined macro.
+ /// \param Name Macro name.
+ /// \returns Pointer to macro. NULL if no such macro was defined.
+ const MCAsmMacro* LookupMacro(StringRef Name);
+
+ /// \brief Define a new macro with the given name and information.
+ void DefineMacro(StringRef Name, const MCAsmMacro& Macro);
+
+ /// \brief Undefine a macro. If no such macro was defined, it's a no-op.
+ void UndefineMacro(StringRef Name);
+
+ /// \brief Are we inside a macro instantiation?
+ bool InsideMacroInstantiation() {return !ActiveMacros.empty();}
+
+ /// \brief Handle entry to macro instantiation.
+ ///
+ /// \param M The macro.
+ /// \param NameLoc Instantiation location.
+ bool HandleMacroEntry(const MCAsmMacro *M, SMLoc NameLoc);
+
+ /// \brief Handle exit from macro instantiation.
void HandleMacroExit();
+ /// \brief Extract AsmTokens for a macro argument. If the argument delimiter
+ /// is initially unknown, set it to AsmToken::Eof. It will be set to the
+ /// correct delimiter by the method.
+ bool ParseMacroArgument(MCAsmMacroArgument &MA,
+ AsmToken::TokenKind &ArgumentDelimiter);
+
+ /// \brief Parse all macro arguments for a given macro.
+ bool ParseMacroArguments(const MCAsmMacro *M, MCAsmMacroArguments &A);
+
void PrintMacroInstantiations();
void PrintMessage(SMLoc Loc, SourceMgr::DiagKind Kind, const Twine &Msg,
ArrayRef<SMRange> Ranges = ArrayRef<SMRange>()) const {
/// 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);
-
- void EatToEndOfStatement();
-
- bool ParseMacroArgument(MacroArgument &MA);
- bool ParseMacroArguments(const Macro *M, std::vector<MacroArgument> &A);
+ ///
+ /// \param InBuffer If not -1, should be the known buffer id that contains the
+ /// location.
+ void JumpToLoc(SMLoc Loc, int InBuffer=-1);
/// \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 allow_redef);
+ 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);
-
- // Directive Parsing.
+ bool ParseRegisterOrRegisterNumber(int64_t &Register, SMLoc DirectiveLoc);
- // ".ascii", ".asciiz", ".string"
+ // Generic (target and platform independent) directive parsing.
+ 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,
+ DK_SPACE, DK_SKIP, DK_FILE, DK_LINE, DK_LOC, DK_STABS,
+ DK_CFI_SECTIONS, DK_CFI_STARTPROC, DK_CFI_ENDPROC, DK_CFI_DEF_CFA,
+ DK_CFI_DEF_CFA_OFFSET, DK_CFI_ADJUST_CFA_OFFSET, DK_CFI_DEF_CFA_REGISTER,
+ DK_CFI_OFFSET, DK_CFI_REL_OFFSET, DK_CFI_PERSONALITY, DK_CFI_LSDA,
+ DK_CFI_REMEMBER_STATE, DK_CFI_RESTORE_STATE, DK_CFI_SAME_VALUE,
+ DK_CFI_RESTORE, DK_CFI_ESCAPE, DK_CFI_SIGNAL_FRAME, DK_CFI_UNDEFINED,
+ DK_CFI_REGISTER,
+ DK_MACROS_ON, DK_MACROS_OFF, DK_MACRO, DK_ENDM, DK_ENDMACRO, DK_PURGEM,
+ DK_SLEB128, DK_ULEB128
+ };
+
+ /// DirectiveKindMap - Maps directive name --> DirectiveKind enum, for
+ /// directives parsed by this class.
+ StringMap<DirectiveKind> DirectiveKindMap;
+
+ // ".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, bool allow_redef); // ".set", ".equ", ".equiv"
+ // ".set", ".equ", ".equiv"
+ bool ParseDirectiveSet(StringRef IDVal, bool allow_redef);
bool ParseDirectiveOrg(); // ".org"
// ".align{,32}", ".p2align{,w,l}"
bool ParseDirectiveAlign(bool IsPow2, unsigned ValueSize);
+ // ".file", ".line", ".loc", ".stabs"
+ bool ParseDirectiveFile(SMLoc DirectiveLoc);
+ bool ParseDirectiveLine();
+ bool ParseDirectiveLoc();
+ bool ParseDirectiveStabs();
+
+ // .cfi directives
+ bool ParseDirectiveCFIRegister(SMLoc DirectiveLoc);
+ bool ParseDirectiveCFISections();
+ bool ParseDirectiveCFIStartProc();
+ bool ParseDirectiveCFIEndProc();
+ bool ParseDirectiveCFIDefCfaOffset();
+ bool ParseDirectiveCFIDefCfa(SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIAdjustCfaOffset();
+ bool ParseDirectiveCFIDefCfaRegister(SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIOffset(SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIRelOffset(SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIPersonalityOrLsda(bool IsPersonality);
+ bool ParseDirectiveCFIRememberState();
+ bool ParseDirectiveCFIRestoreState();
+ bool ParseDirectiveCFISameValue(SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIRestore(SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIEscape();
+ bool ParseDirectiveCFISignalFrame();
+ bool ParseDirectiveCFIUndefined(SMLoc DirectiveLoc);
+
+ // macro directives
+ bool ParseDirectivePurgeMacro(SMLoc DirectiveLoc);
+ bool ParseDirectiveEndMacro(StringRef Directive);
+ bool ParseDirectiveMacro(SMLoc DirectiveLoc);
+ bool ParseDirectiveMacrosOnOff(StringRef Directive);
+
+ // ".bundle_align_mode"
+ bool ParseDirectiveBundleAlignMode();
+ // ".bundle_lock"
+ bool ParseDirectiveBundleLock();
+ // ".bundle_unlock"
+ bool ParseDirectiveBundleUnlock();
+
+ // ".space", ".skip"
+ bool ParseDirectiveSpace(StringRef IDVal);
+
+ // .sleb128 (Signed=true) and .uleb128 (Signed=false)
+ bool ParseDirectiveLEB128(bool Signed);
+
/// ParseDirectiveSymbolAttribute - Parse a directive like ".globl" which
/// accepts a single symbol (which should be a label or an external).
bool ParseDirectiveSymbolAttribute(MCSymbolAttr Attr);
bool ParseDirectiveElseIf(SMLoc DirectiveLoc); // ".elseif"
bool ParseDirectiveElse(SMLoc DirectiveLoc); // ".else"
bool ParseDirectiveEndIf(SMLoc DirectiveLoc); // .endif
-
- /// ParseEscapedString - Parse the current token as a string which may include
- /// escaped characters and return the string contents.
- bool ParseEscapedString(std::string &Data);
+ virtual bool ParseEscapedString(std::string &Data);
const MCExpr *ApplyModifierToExpr(const MCExpr *E,
MCSymbolRefExpr::VariantKind Variant);
// Macro-like directives
- Macro *ParseMacroLikeBody(SMLoc DirectiveLoc);
- void InstantiateMacroLikeBody(Macro *M, SMLoc DirectiveLoc,
+ MCAsmMacro *ParseMacroLikeBody(SMLoc DirectiveLoc);
+ void InstantiateMacroLikeBody(MCAsmMacro *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"
-};
-
-/// \brief Generic implementations of directive handling, etc. which is shared
-/// (or the default, at least) for all assembler parser.
-class GenericAsmParser : public MCAsmParserExtension {
- template<bool (GenericAsmParser::*Handler)(StringRef, SMLoc)>
- void AddDirectiveHandler(StringRef Directive) {
- getParser().AddDirectiveHandler(this, Directive,
- HandleDirective<GenericAsmParser, Handler>);
- }
-public:
- GenericAsmParser() {}
-
- AsmParser &getParser() {
- return (AsmParser&) this->MCAsmParserExtension::getParser();
- }
-
- virtual void Initialize(MCAsmParser &Parser) {
- // Call the base implementation.
- this->MCAsmParserExtension::Initialize(Parser);
-
- // Debugging directives.
- AddDirectiveHandler<&GenericAsmParser::ParseDirectiveFile>(".file");
- AddDirectiveHandler<&GenericAsmParser::ParseDirectiveLine>(".line");
- AddDirectiveHandler<&GenericAsmParser::ParseDirectiveLoc>(".loc");
- AddDirectiveHandler<&GenericAsmParser::ParseDirectiveStabs>(".stabs");
-
- // 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");
-
- // Macro directives.
- AddDirectiveHandler<&GenericAsmParser::ParseDirectiveMacrosOnOff>(
- ".macros_on");
- AddDirectiveHandler<&GenericAsmParser::ParseDirectiveMacrosOnOff>(
- ".macros_off");
- 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);
+ // "_emit"
+ bool ParseDirectiveEmit(SMLoc DirectiveLoc, ParseStatementInfo &Info);
- bool ParseDirectiveFile(StringRef, SMLoc DirectiveLoc);
- bool ParseDirectiveLine(StringRef, SMLoc DirectiveLoc);
- bool ParseDirectiveLoc(StringRef, SMLoc DirectiveLoc);
- bool ParseDirectiveStabs(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 ParseDirectiveMacrosOnOff(StringRef, SMLoc DirectiveLoc);
- bool ParseDirectiveMacro(StringRef, SMLoc DirectiveLoc);
- bool ParseDirectiveEndMacro(StringRef, SMLoc DirectiveLoc);
- bool ParseDirectivePurgeMacro(StringRef, SMLoc DirectiveLoc);
-
- bool ParseDirectiveLEB128(StringRef, SMLoc);
+ void initializeDirectiveKindMap();
};
-
}
namespace llvm {
AsmParser::AsmParser(SourceMgr &_SM, MCContext &_Ctx,
MCStreamer &_Out, const MCAsmInfo &_MAI)
: Lexer(_MAI), Ctx(_Ctx), Out(_Out), MAI(_MAI), SrcMgr(_SM),
- GenericParser(new GenericAsmParser), PlatformParser(0),
- CurBuffer(0), MacrosEnabled(true), CppHashLineNumber(0),
- AssemblerDialect(~0U) {
+ PlatformParser(0),
+ CurBuffer(0), MacrosEnabledFlag(true), CppHashLineNumber(0),
+ AssemblerDialect(~0U), IsDarwin(false), ParsingInlineAsm(false) {
// Save the old handler.
SavedDiagHandler = SrcMgr.getDiagHandler();
SavedDiagContext = SrcMgr.getDiagContext();
SrcMgr.setDiagHandler(DiagHandler, this);
Lexer.setBuffer(SrcMgr.getMemoryBuffer(CurBuffer));
- // Initialize the generic parser.
- GenericParser->Initialize(*this);
-
// Initialize the platform / file format parser.
//
// FIXME: This is a hack, we need to (majorly) cleanup how these objects are
} else if (_MAI.hasSubsectionsViaSymbols()) {
PlatformParser = createDarwinAsmParser();
PlatformParser->Initialize(*this);
+ IsDarwin = true;
} else {
PlatformParser = createELFAsmParser();
PlatformParser->Initialize(*this);
}
+
+ initializeDirectiveKindMap();
}
AsmParser::~AsmParser() {
assert(ActiveMacros.empty() && "Unexpected active macro instantiation!");
// Destroy any macros.
- for (StringMap<Macro*>::iterator it = MacroMap.begin(),
+ for (StringMap<MCAsmMacro*>::iterator it = MacroMap.begin(),
ie = MacroMap.end(); it != ie; ++it)
delete it->getValue();
delete PlatformParser;
- delete GenericParser;
}
void AsmParser::PrintMacroInstantiations() {
return false;
}
-void AsmParser::JumpToLoc(SMLoc Loc) {
- CurBuffer = SrcMgr.FindBufferContainingLoc(Loc);
+void AsmParser::JumpToLoc(SMLoc Loc, int InBuffer) {
+ if (InBuffer != -1) {
+ CurBuffer = InBuffer;
+ } else {
+ CurBuffer = SrcMgr.FindBufferContainingLoc(Loc);
+ }
Lexer.setBuffer(SrcMgr.getMemoryBuffer(CurBuffer), Loc.getPointer());
}
getStreamer().EmitLabel(SectionStartSym);
getContext().setGenDwarfSectionStartSym(SectionStartSym);
getStreamer().EmitDwarfFileDirective(getContext().nextGenDwarfFileNumber(),
- StringRef(), SrcMgr.getMemoryBuffer(CurBuffer)->getBufferIdentifier());
+ 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.
}
void AsmParser::CheckForValidSection() {
- if (!getStreamer().getCurrentSection()) {
+ if (!ParsingInlineAsm && !getStreamer().getCurrentSection()) {
TokError("expected section directive before assembly directive");
- Out.SwitchSection(Ctx.getMachOSection(
- "__TEXT", "__text",
- MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
- 0, SectionKind::getText()));
+ Out.InitToTextSection();
}
}
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;
}
if (ParseExpression(Res)) return true;
if (Lexer.isNot(AsmToken::RBrac))
return TokError("expected ']' in brackets expression");
- EndLoc = Lexer.getLoc();
+ EndLoc = Lexer.getTok().getEndLoc();
Lex();
return false;
}
case AsmToken::Dollar:
case AsmToken::String:
case AsmToken::Identifier: {
- EndLoc = Lexer.getLoc();
-
StringRef Identifier;
if (ParseIdentifier(Identifier))
return true;
+ EndLoc = SMLoc::getFromPointer(Identifier.end());
+
// This is a symbol reference.
std::pair<StringRef, StringRef> Split = Identifier.split('@');
MCSymbol *Sym = getContext().GetOrCreateSymbol(Split.first);
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) {
getContext());
if (IDVal == "b" && Sym->isUndefined())
return Error(Loc, "invalid reference to undefined symbol");
- EndLoc = Lexer.getLoc();
+ EndLoc = Lexer.getTok().getEndLoc();
Lex(); // Eat identifier.
}
}
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;
}
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;
}
}
}
-
-
-
/// 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();
if (!TheCondState.Ignore)
return TokError("unexpected token at start of statement");
IDVal = "";
- }
- else {
+ } else {
IDVal = getTok().getString();
Lex(); // Consume the integer token to be used as an identifier token.
if (Lexer.getKind() != AsmToken::Colon) {
return TokError("unexpected token at start of statement");
}
}
-
} 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 == ".ifb")
- return ParseDirectiveIfb(IDLoc, true);
- if (IDVal == ".ifnb")
- return ParseDirectiveIfb(IDLoc, false);
- if (IDVal == ".ifc")
- return ParseDirectiveIfc(IDLoc, true);
- if (IDVal == ".ifnc")
- return ParseDirectiveIfc(IDLoc, false);
- if (IDVal == ".ifdef")
- return ParseDirectiveIfdef(IDLoc, true);
- if (IDVal == ".ifndef" || IDVal == ".ifnotdef")
- return ParseDirectiveIfdef(IDLoc, false);
- if (IDVal == ".elseif")
- return ParseDirectiveElseIf(IDLoc);
- if (IDVal == ".else")
- return ParseDirectiveElse(IDLoc);
- if (IDVal == ".endif")
- return ParseDirectiveEndIf(IDLoc);
-
- // If we are in a ".if 0" block, ignore this statement.
+ StringMap<DirectiveKind>::const_iterator DirKindIt =
+ DirectiveKindMap.find(IDVal);
+ DirectiveKind DirKind =
+ (DirKindIt == DirectiveKindMap.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);
+ }
+
+ // Ignore the statement if in the middle of inactive conditional
+ // (e.g. ".if 0").
if (TheCondState.Ignore) {
EatToEndOfStatement();
return false;
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.
return false;
}
- return ParseStatement();
+ return false;
}
case AsmToken::Equal:
}
// If macros are enabled, check to see if this is a macro instantiation.
- if (MacrosEnabled)
- if (const Macro *M = MacroMap.lookup(IDVal))
- return HandleMacroEntry(IDVal, IDLoc, M);
+ if (MacrosEnabled())
+ if (const MCAsmMacro *M = LookupMacro(IDVal)) {
+ return HandleMacroEntry(M, IDLoc);
+ }
// Otherwise, we have a normal instruction or directive.
+
+ // Directives start with "."
if (IDVal[0] == '.' && IDVal != ".") {
-
- // Target hook for parsing target specific directives.
+ // There are several entities interested in parsing directives:
+ //
+ // 1. The target-specific assembly parser. Some directives are target
+ // specific or may potentially behave differently on certain targets.
+ // 2. Asm parser extensions. For example, platform-specific parsers
+ // (like the ELF parser) register themselves as extensions.
+ // 3. The generic directive parser implemented by this class. These are
+ // all the directives that behave in a target and platform independent
+ // manner, or at least have a default behavior that's shared between
+ // all targets and platforms.
+
+ // First query the target-specific parser. It will return 'true' if it
+ // isn't interested in this directive.
if (!getTargetParser().ParseDirective(ID))
return false;
- // Assembler features
- if (IDVal == ".set" || IDVal == ".equ")
- return ParseDirectiveSet(IDVal, true);
- if (IDVal == ".equiv")
- return ParseDirectiveSet(IDVal, false);
-
- // 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 == ".int")
- return ParseDirectiveValue(4);
- if (IDVal == ".4byte")
- return ParseDirectiveValue(4);
- if (IDVal == ".quad")
- return ParseDirectiveValue(8);
- if (IDVal == ".8byte")
- return ParseDirectiveValue(8);
- if (IDVal == ".single" || IDVal == ".float")
- 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 == ".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" || IDVal == ".skip")
- return ParseDirectiveSpace();
- if (IDVal == ".zero")
- return ParseDirectiveZero();
-
- // Symbol attribute directives
-
- if (IDVal == ".extern") {
- EatToEndOfStatement(); // .extern is the default, ignore it.
- return false;
- }
- if (IDVal == ".globl" || IDVal == ".global")
- return ParseDirectiveSymbolAttribute(MCSA_Global);
- if (IDVal == ".indirect_symbol")
- return ParseDirectiveSymbolAttribute(MCSA_IndirectSymbol);
- if (IDVal == ".lazy_reference")
- return ParseDirectiveSymbolAttribute(MCSA_LazyReference);
- if (IDVal == ".no_dead_strip")
- return ParseDirectiveSymbolAttribute(MCSA_NoDeadStrip);
- if (IDVal == ".symbol_resolver")
- return ParseDirectiveSymbolAttribute(MCSA_SymbolResolver);
- if (IDVal == ".private_extern")
- return ParseDirectiveSymbolAttribute(MCSA_PrivateExtern);
- if (IDVal == ".reference")
- return ParseDirectiveSymbolAttribute(MCSA_Reference);
- 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" || IDVal == ".common")
- return ParseDirectiveComm(/*IsLocal=*/false);
- if (IDVal == ".lcomm")
- return ParseDirectiveComm(/*IsLocal=*/true);
-
- if (IDVal == ".abort")
- return ParseDirectiveAbort();
- if (IDVal == ".include")
- return ParseDirectiveInclude();
- if (IDVal == ".incbin")
- return ParseDirectiveIncbin();
-
- if (IDVal == ".code16" || IDVal == ".code16gcc")
- return TokError(Twine(IDVal) + " not supported yet");
-
- // Macro-like directives
- if (IDVal == ".rept")
- return ParseDirectiveRept(IDLoc);
- if (IDVal == ".irp")
- return ParseDirectiveIrp(IDLoc);
- if (IDVal == ".irpc")
- return ParseDirectiveIrpc(IDLoc);
- if (IDVal == ".endr")
- return ParseDirectiveEndr(IDLoc);
-
- // Look up the handler in the handler table.
+ // Next, check the extention directive map to see if any extension has
+ // registered itself to parse this directive.
std::pair<MCAsmParserExtension*, DirectiveHandler> Handler =
- DirectiveMap.lookup(IDVal);
+ ExtensionDirectiveMap.lookup(IDVal);
if (Handler.first)
return (*Handler.second)(Handler.first, IDVal, IDLoc);
+ // Finally, if no one else is interested in this directive, it must be
+ // generic and familiar to this class.
+ 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();
+ case DK_SLEB128:
+ return ParseDirectiveLEB128(true);
+ case DK_ULEB128:
+ return ParseDirectiveLEB128(false);
+ case DK_SPACE:
+ case DK_SKIP:
+ return ParseDirectiveSpace(IDVal);
+ case DK_FILE:
+ return ParseDirectiveFile(IDLoc);
+ case DK_LINE:
+ return ParseDirectiveLine();
+ case DK_LOC:
+ return ParseDirectiveLoc();
+ case DK_STABS:
+ return ParseDirectiveStabs();
+ case DK_CFI_SECTIONS:
+ return ParseDirectiveCFISections();
+ case DK_CFI_STARTPROC:
+ return ParseDirectiveCFIStartProc();
+ case DK_CFI_ENDPROC:
+ return ParseDirectiveCFIEndProc();
+ case DK_CFI_DEF_CFA:
+ return ParseDirectiveCFIDefCfa(IDLoc);
+ case DK_CFI_DEF_CFA_OFFSET:
+ return ParseDirectiveCFIDefCfaOffset();
+ case DK_CFI_ADJUST_CFA_OFFSET:
+ return ParseDirectiveCFIAdjustCfaOffset();
+ case DK_CFI_DEF_CFA_REGISTER:
+ return ParseDirectiveCFIDefCfaRegister(IDLoc);
+ case DK_CFI_OFFSET:
+ return ParseDirectiveCFIOffset(IDLoc);
+ case DK_CFI_REL_OFFSET:
+ return ParseDirectiveCFIRelOffset(IDLoc);
+ case DK_CFI_PERSONALITY:
+ return ParseDirectiveCFIPersonalityOrLsda(true);
+ case DK_CFI_LSDA:
+ return ParseDirectiveCFIPersonalityOrLsda(false);
+ case DK_CFI_REMEMBER_STATE:
+ return ParseDirectiveCFIRememberState();
+ case DK_CFI_RESTORE_STATE:
+ return ParseDirectiveCFIRestoreState();
+ case DK_CFI_SAME_VALUE:
+ return ParseDirectiveCFISameValue(IDLoc);
+ case DK_CFI_RESTORE:
+ return ParseDirectiveCFIRestore(IDLoc);
+ case DK_CFI_ESCAPE:
+ return ParseDirectiveCFIEscape();
+ case DK_CFI_SIGNAL_FRAME:
+ return ParseDirectiveCFISignalFrame();
+ case DK_CFI_UNDEFINED:
+ return ParseDirectiveCFIUndefined(IDLoc);
+ case DK_CFI_REGISTER:
+ return ParseDirectiveCFIRegister(IDLoc);
+ case DK_MACROS_ON:
+ case DK_MACROS_OFF:
+ return ParseDirectiveMacrosOnOff(IDVal);
+ case DK_MACRO:
+ return ParseDirectiveMacro(IDLoc);
+ case DK_ENDM:
+ case DK_ENDMACRO:
+ return ParseDirectiveEndMacro(IDVal);
+ case DK_PURGEM:
+ return ParseDirectivePurgeMacro(IDLoc);
+ }
return Error(IDLoc, "unknown directive");
}
+ // _emit
+ if (ParsingInlineAsm && IDVal == "_emit")
+ return ParseDirectiveEmit(IDLoc, Info);
+
CheckForValidSection();
// Canonicalize the opcode to lower case.
- SmallString<128> Opcode;
- for (unsigned i = 0, e = IDVal.size(); i != e; ++i)
- Opcode.push_back(tolower(IDVal[i]));
-
- SmallVector<MCParsedAsmOperand*, 8> ParsedOperands;
- bool HadError = getTargetParser().ParseInstruction(Opcode.str(), IDLoc,
- ParsedOperands);
+ std::string OpcodeStr = IDVal.lower();
+ ParseInstructionInfo IInfo(Info.AsmRewrites);
+ bool HadError = getTargetParser().ParseInstruction(IInfo, OpcodeStr,
+ 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]->print(OS);
+ Info.ParsedOperands[i]->print(OS);
}
OS << "]";
// section is the initial text section then generate a .loc directive for
// the instruction.
if (!HadError && getContext().getGenDwarfForAssembly() &&
- getContext().getGenDwarfSection() == getStreamer().getCurrentSection() ) {
+ 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(),
- SrcMgr.FindLineNumber(IDLoc, CurBuffer),
- 0, DWARF2_LINE_DEFAULT_IS_STMT ?
+ Line, 0, DWARF2_LINE_DEFAULT_IS_STMT ?
DWARF2_FLAG_IS_STMT : 0, 0, 0,
StringRef());
}
// If parsing succeeded, match the instruction.
- if (!HadError)
- HadError = getTargetParser().MatchAndEmitInstruction(IDLoc, ParsedOperands,
- Out);
-
- // Free any parsed operands.
- for (unsigned i = 0, e = ParsedOperands.size(); i != e; ++i)
- delete ParsedOperands[i];
+ 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.
CppHashLoc = L;
CppHashFilename = Filename;
CppHashLineNumber = LineNumber;
+ CppHashBuf = CurBuffer;
// Ignore any trailing characters, they're just comment.
EatToEndOfLine();
return false;
}
-/// DiagHandler - will use the the last parsed cpp hash line filename comment
+/// 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);
DiagSrcMgr.PrintIncludeStack(ParentIncludeLoc, OS);
}
- // If we have not parsed a cpp hash line filename comment or the source
+ // 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 ||
return;
}
- // Use the CppHashFilename and calculate a line number based on the
+ // 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;
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 std::vector<StringRef> &Parameters,
- const std::vector<MacroArgument> &A,
+ const MCAsmMacroParameters &Parameters,
+ const MCAsmMacroArguments &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;
break;
// Otherwise substitute with the token values, with spaces eliminated.
- for (MacroArgument::const_iterator it = A[Index].begin(),
+ for (MCAsmMacroArgument::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 (isalnum(Body[I]) && I + 1 != End)
+ 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] == Argument)
+ if (Parameters[Index].first == Argument)
break;
- // FIXME: We should error at the macro definition.
- if (Index == NParameters)
- return Error(L, "Parameter not found");
-
- for (MacroArgument::const_iterator it = A[Index].begin(),
- ie = A[Index].end(); it != ie; ++it)
- OS << it->getString();
+ if (Index == NParameters) {
+ if (Body[Pos+1] == '(' && Body[Pos+2] == ')')
+ Pos += 3;
+ else {
+ OS << '\\' << Argument;
+ Pos = I;
+ }
+ } else {
+ for (MCAsmMacroArgument::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();
- Pos += 1 + Argument.size();
+ Pos += 1 + Argument.size();
+ }
}
// Update the scan point.
Body = Body.substr(Pos);
return false;
}
-MacroInstantiation::MacroInstantiation(const Macro *M, SMLoc IL, SMLoc EL,
+MacroInstantiation::MacroInstantiation(const MCAsmMacro *M, SMLoc IL,
+ int EB, SMLoc EL,
MemoryBuffer *I)
- : TheMacro(M), Instantiation(I), InstantiationLoc(IL), ExitLoc(EL)
+ : TheMacro(M), Instantiation(I), InstantiationLoc(IL), ExitBuffer(EB),
+ ExitLoc(EL)
+{
+}
+
+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;
+ }
}
-/// 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) {
+bool AsmParser::ParseMacroArgument(MCAsmMacroArgument &MA,
+ AsmToken::TokenKind &ArgumentDelimiter) {
unsigned ParenLevel = 0;
+ unsigned AddTokens = 0;
- for (;;) {
- SMLoc LastTokenLoc;
+ // gas accepts arguments separated by whitespace, except on Darwin
+ if (!IsDarwin)
+ Lexer.setSkipSpace(false);
- if (Lexer.is(AsmToken::Eof) || Lexer.is(AsmToken::Equal))
+ for (;;) {
+ if (Lexer.is(AsmToken::Eof) || Lexer.is(AsmToken::Equal)) {
+ Lexer.setSkipSpace(true);
return TokError("unexpected token in macro instantiation");
+ }
+
+ if (ParenLevel == 0 && Lexer.is(AsmToken::Comma)) {
+ // 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;
+ }
+
+ 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;
+ }
+
+ 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;
- if (ParenLevel == 0 && Lexer.is(AsmToken::Comma))
- break;
// Adjust the current parentheses level.
if (Lexer.is(AsmToken::LParen))
// 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 parenthesises in macro argument");
+ return TokError("unbalanced parentheses in macro argument");
return false;
}
// Parse the macro instantiation arguments.
-bool AsmParser::ParseMacroArguments(const Macro *M,
- std::vector<MacroArgument> &A) {
+bool AsmParser::ParseMacroArguments(const MCAsmMacro *M, MCAsmMacroArguments &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;
+ MCAsmMacroArgument MA;
- if (ParseMacroArgument(MA))
+ if (ParseMacroArgument(MA, ArgumentDelimiter))
return true;
- if (!MA.empty())
+ if (!MA.empty() || !NParameters)
A.push_back(MA);
- if (Lexer.is(AsmToken::EndOfStatement))
+ else if (NParameters) {
+ if (!M->Parameters[Parameter].second.empty())
+ A.push_back(M->Parameters[Parameter].second);
+ }
+
+ // 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) {
+const MCAsmMacro* AsmParser::LookupMacro(StringRef Name) {
+ StringMap<MCAsmMacro*>::iterator I = MacroMap.find(Name);
+ return (I == MacroMap.end()) ? NULL : I->getValue();
+}
+
+void AsmParser::DefineMacro(StringRef Name, const MCAsmMacro& Macro) {
+ MacroMap[Name] = new MCAsmMacro(Macro);
+}
+
+void AsmParser::UndefineMacro(StringRef Name) {
+ StringMap<MCAsmMacro*>::iterator I = MacroMap.find(Name);
+ if (I != MacroMap.end()) {
+ delete I->getValue();
+ MacroMap.erase(I);
+ }
+}
+
+bool AsmParser::HandleMacroEntry(const MCAsmMacro *M, SMLoc NameLoc) {
// 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");
- std::vector<MacroArgument> MacroArguments;
- if (ParseMacroArguments(M, MacroArguments))
+ MCAsmMacroArguments 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, MacroArguments, getTok().getLoc()))
+ 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
+ // We include the .endmacro in the buffer as our cue to exit the macro
// instantiation.
OS << ".endmacro\n";
// 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);
void AsmParser::HandleMacroExit() {
// Jump to the EndOfStatement we should return to, and consume it.
- JumpToLoc(ActiveMacros.back()->ExitLoc);
+ JumpToLoc(ActiveMacros.back()->ExitLoc, ActiveMacros.back()->ExitBuffer);
Lex();
// Pop the instantiation entry.
llvm_unreachable("Unknown expr kind!");
}
-bool AsmParser::ParseAssignment(StringRef Name, bool allow_redef) {
+bool AsmParser::ParseAssignment(StringRef Name, bool allow_redef,
+ bool NoDeadStrip) {
// FIXME: Use better location, we should use proper tokens.
SMLoc EqualLoc = Lexer.getLoc();
// Do the assignment.
Out.EmitAssignment(Sym, Value);
+ if (NoDeadStrip)
+ Out.EmitSymbolAttribute(Sym, MCSA_NoDeadStrip);
+
return false;
}
return TokError("unexpected token in '" + Twine(IDVal) + "'");
Lex();
- return ParseAssignment(Name, allow_redef);
+ return ParseAssignment(Name, allow_redef, true);
}
bool AsmParser::ParseEscapedString(std::string &Data) {
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() {
return false;
}
-/// ParseDirectiveSymbolAttribute
-/// ::= { ".globl", ".weak", ... } [ identifier ( , identifier )* ]
-bool AsmParser::ParseDirectiveSymbolAttribute(MCSymbolAttr Attr) {
- if (getLexer().isNot(AsmToken::EndOfStatement)) {
- for (;;) {
- StringRef Name;
- SMLoc Loc = getTok().getLoc();
+/// ParseDirectiveFile
+/// ::= .file [number] filename
+/// ::= .file number directory filename
+bool AsmParser::ParseDirectiveFile(SMLoc DirectiveLoc) {
+ // FIXME: I'm not sure what this is.
+ int64_t FileNumber = -1;
+ SMLoc FileNumberLoc = getLexer().getLoc();
+ if (getLexer().is(AsmToken::Integer)) {
+ FileNumber = getTok().getIntVal();
+ Lex();
- if (ParseIdentifier(Name))
- return Error(Loc, "expected identifier in directive");
+ if (FileNumber < 1)
+ return TokError("file number less than one");
+ }
- MCSymbol *Sym = getContext().GetOrCreateSymbol(Name);
+ if (getLexer().isNot(AsmToken::String))
+ return TokError("unexpected token in '.file' directive");
- // Assembler local symbols don't make any sense here. Complain loudly.
- if (Sym->isTemporary())
- return Error(Loc, "non-local symbol required in directive");
+ // Usually the directory and filename together, otherwise just the directory.
+ StringRef Path = getTok().getString();
+ Path = Path.substr(1, Path.size()-2);
+ Lex();
- getStreamer().EmitSymbolAttribute(Sym, Attr);
+ 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().is(AsmToken::EndOfStatement))
- break;
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '.file' directive");
- if (getLexer().isNot(AsmToken::Comma))
- return TokError("unexpected token in directive");
- Lex();
- }
+ if (FileNumber == -1)
+ getStreamer().EmitFileDirective(Filename);
+ else {
+ 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");
}
- Lex();
return false;
}
-/// ParseDirectiveComm
-/// ::= ( .comm | .lcomm ) identifier , size_expression [ , align_expression ]
-bool AsmParser::ParseDirectiveComm(bool IsLocal) {
- CheckForValidSection();
-
- SMLoc IDLoc = getLexer().getLoc();
- StringRef Name;
- if (ParseIdentifier(Name))
- return TokError("expected identifier in directive");
-
- // Handle the identifier as the key symbol.
- MCSymbol *Sym = getContext().GetOrCreateSymbol(Name);
-
- if (getLexer().isNot(AsmToken::Comma))
- return TokError("unexpected token in directive");
- Lex();
-
- int64_t Size;
- SMLoc SizeLoc = getLexer().getLoc();
- if (ParseAbsoluteExpression(Size))
- return true;
+/// ParseDirectiveLine
+/// ::= .line [number]
+bool AsmParser::ParseDirectiveLine() {
+ if (getLexer().isNot(AsmToken::EndOfStatement)) {
+ if (getLexer().isNot(AsmToken::Integer))
+ return TokError("unexpected token in '.line' directive");
- int64_t Pow2Alignment = 0;
- SMLoc Pow2AlignmentLoc;
- if (getLexer().is(AsmToken::Comma)) {
+ int64_t LineNumber = getTok().getIntVal();
+ (void) LineNumber;
Lex();
- Pow2AlignmentLoc = getLexer().getLoc();
- if (ParseAbsoluteExpression(Pow2Alignment))
- return true;
- // If this target takes alignments in bytes (not log) validate and convert.
- if (Lexer.getMAI().getAlignmentIsInBytes()) {
- if (!isPowerOf2_64(Pow2Alignment))
- return Error(Pow2AlignmentLoc, "alignment must be a power of 2");
- Pow2Alignment = Log2_64(Pow2Alignment);
- }
+ // FIXME: Do something with the .line.
}
if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in '.comm' or '.lcomm' directive");
-
- Lex();
+ return TokError("unexpected token in '.line' directive");
- // NOTE: a size of zero for a .comm should create a undefined symbol
- // but a size of .lcomm creates a bss symbol of size zero.
- if (Size < 0)
- return Error(SizeLoc, "invalid '.comm' or '.lcomm' directive size, can't "
- "be less than zero");
+ return false;
+}
- // NOTE: The alignment in the directive is a power of 2 value, the assembler
- // may internally end up wanting an alignment in bytes.
- // FIXME: Diagnose overflow.
- if (Pow2Alignment < 0)
- return Error(Pow2AlignmentLoc, "invalid '.comm' or '.lcomm' directive "
- "alignment, can't be less than zero");
+/// ParseDirectiveLoc
+/// ::= .loc FileNumber [LineNumber] [ColumnPos] [basic_block] [prologue_end]
+/// [epilogue_begin] [is_stmt VALUE] [isa VALUE]
+/// The first number is a file number, must have been previously assigned with
+/// a .file directive, the second number is the line number and optionally the
+/// third number is a column position (zero if not specified). The remaining
+/// optional items are .loc sub-directives.
+bool AsmParser::ParseDirectiveLoc() {
+ if (getLexer().isNot(AsmToken::Integer))
+ return TokError("unexpected token in '.loc' directive");
+ int64_t FileNumber = getTok().getIntVal();
+ if (FileNumber < 1)
+ return TokError("file number less than one in '.loc' directive");
+ if (!getContext().isValidDwarfFileNumber(FileNumber))
+ return TokError("unassigned file number in '.loc' directive");
+ Lex();
- if (!Sym->isUndefined())
- return Error(IDLoc, "invalid symbol redefinition");
+ int64_t LineNumber = 0;
+ if (getLexer().is(AsmToken::Integer)) {
+ LineNumber = getTok().getIntVal();
+ if (LineNumber < 1)
+ return TokError("line number less than one in '.loc' directive");
+ Lex();
+ }
- // '.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);
- return false;
+ int64_t ColumnPos = 0;
+ if (getLexer().is(AsmToken::Integer)) {
+ ColumnPos = getTok().getIntVal();
+ if (ColumnPos < 0)
+ return TokError("column position less than zero in '.loc' directive");
+ Lex();
}
- getStreamer().EmitCommonSymbol(Sym, Size, 1 << Pow2Alignment);
- return false;
-}
+ unsigned Flags = DWARF2_LINE_DEFAULT_IS_STMT ? DWARF2_FLAG_IS_STMT : 0;
+ unsigned Isa = 0;
+ int64_t Discriminator = 0;
+ if (getLexer().isNot(AsmToken::EndOfStatement)) {
+ for (;;) {
+ if (getLexer().is(AsmToken::EndOfStatement))
+ break;
-/// ParseDirectiveAbort
-/// ::= .abort [... message ...]
-bool AsmParser::ParseDirectiveAbort() {
- // FIXME: Use loc from directive.
- SMLoc Loc = getLexer().getLoc();
+ StringRef Name;
+ SMLoc Loc = getTok().getLoc();
+ if (ParseIdentifier(Name))
+ return TokError("unexpected token in '.loc' directive");
- StringRef Str = ParseStringToEndOfStatement();
- if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in '.abort' directive");
+ if (Name == "basic_block")
+ Flags |= DWARF2_FLAG_BASIC_BLOCK;
+ else if (Name == "prologue_end")
+ Flags |= DWARF2_FLAG_PROLOGUE_END;
+ else if (Name == "epilogue_begin")
+ Flags |= DWARF2_FLAG_EPILOGUE_BEGIN;
+ else if (Name == "is_stmt") {
+ Loc = getTok().getLoc();
+ const MCExpr *Value;
+ if (ParseExpression(Value))
+ return true;
+ // The expression must be the constant 0 or 1.
+ if (const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(Value)) {
+ int Value = MCE->getValue();
+ if (Value == 0)
+ Flags &= ~DWARF2_FLAG_IS_STMT;
+ else if (Value == 1)
+ Flags |= DWARF2_FLAG_IS_STMT;
+ else
+ return Error(Loc, "is_stmt value not 0 or 1");
+ }
+ else {
+ return Error(Loc, "is_stmt value not the constant value of 0 or 1");
+ }
+ }
+ else if (Name == "isa") {
+ Loc = getTok().getLoc();
+ const MCExpr *Value;
+ if (ParseExpression(Value))
+ return true;
+ // The expression must be a constant greater or equal to 0.
+ if (const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(Value)) {
+ int Value = MCE->getValue();
+ if (Value < 0)
+ return Error(Loc, "isa number less than zero");
+ Isa = Value;
+ }
+ else {
+ return Error(Loc, "isa number not a constant value");
+ }
+ }
+ else if (Name == "discriminator") {
+ if (ParseAbsoluteExpression(Discriminator))
+ return true;
+ }
+ else {
+ return Error(Loc, "unknown sub-directive in '.loc' directive");
+ }
- Lex();
+ if (getLexer().is(AsmToken::EndOfStatement))
+ break;
+ }
+ }
- if (Str.empty())
- Error(Loc, ".abort detected. Assembly stopping.");
- else
- Error(Loc, ".abort '" + Str + "' detected. Assembly stopping.");
- // FIXME: Actually abort assembly here.
+ getStreamer().EmitDwarfLocDirective(FileNumber, LineNumber, ColumnPos, Flags,
+ Isa, Discriminator, StringRef());
return false;
}
-/// ParseDirectiveInclude
-/// ::= .include "filename"
-bool AsmParser::ParseDirectiveInclude() {
- if (getLexer().isNot(AsmToken::String))
- return TokError("expected string in '.include' directive");
+/// ParseDirectiveStabs
+/// ::= .stabs string, number, number, number
+bool AsmParser::ParseDirectiveStabs() {
+ return TokError("unsupported directive '.stabs'");
+}
- std::string Filename = getTok().getString();
- SMLoc IncludeLoc = getLexer().getLoc();
- Lex();
+/// ParseDirectiveCFISections
+/// ::= .cfi_sections section [, section]
+bool AsmParser::ParseDirectiveCFISections() {
+ StringRef Name;
+ bool EH = false;
+ bool Debug = false;
- if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in '.include' directive");
+ if (ParseIdentifier(Name))
+ return TokError("Expected an identifier");
- // Strip the quotes.
- Filename = Filename.substr(1, Filename.size()-2);
+ if (Name == ".eh_frame")
+ EH = true;
+ else if (Name == ".debug_frame")
+ Debug = true;
- // Attempt to switch the lexer to the included file before consuming the end
- // of statement to avoid losing it when we switch.
- if (EnterIncludeFile(Filename)) {
- Error(IncludeLoc, "Could not find include file '" + Filename + "'");
- return true;
+ if (getLexer().is(AsmToken::Comma)) {
+ Lex();
+
+ if (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;
}
-/// 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();
+/// ParseDirectiveCFIStartProc
+/// ::= .cfi_startproc
+bool AsmParser::ParseDirectiveCFIStartProc() {
+ getStreamer().EmitCFIStartProc();
+ return false;
+}
- if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in '.incbin' directive");
+/// ParseDirectiveCFIEndProc
+/// ::= .cfi_endproc
+bool AsmParser::ParseDirectiveCFIEndProc() {
+ getStreamer().EmitCFIEndProc();
+ return false;
+}
- // Strip the quotes.
- Filename = Filename.substr(1, Filename.size()-2);
+/// ParseRegisterOrRegisterNumber - parse register name or number.
+bool AsmParser::ParseRegisterOrRegisterNumber(int64_t &Register,
+ SMLoc DirectiveLoc) {
+ unsigned RegNo;
- // Attempt to process the included file.
- if (ProcessIncbinFile(Filename)) {
- Error(IncbinLoc, "Could not find incbin file '" + Filename + "'");
- return true;
- }
+ if (getLexer().isNot(AsmToken::Integer)) {
+ if (getTargetParser().ParseRegister(RegNo, DirectiveLoc, DirectiveLoc))
+ return true;
+ Register = getContext().getRegisterInfo().getDwarfRegNum(RegNo, true);
+ } else
+ return ParseAbsoluteExpression(Register);
return false;
}
-/// ParseDirectiveIf
-/// ::= .if expression
-bool AsmParser::ParseDirectiveIf(SMLoc DirectiveLoc) {
- TheCondStack.push_back(TheCondState);
- TheCondState.TheCond = AsmCond::IfCond;
- if (TheCondState.Ignore) {
- EatToEndOfStatement();
- } else {
- int64_t ExprValue;
- if (ParseAbsoluteExpression(ExprValue))
- return true;
-
- if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in '.if' directive");
+/// ParseDirectiveCFIDefCfa
+/// ::= .cfi_def_cfa register, offset
+bool AsmParser::ParseDirectiveCFIDefCfa(SMLoc DirectiveLoc) {
+ int64_t Register = 0;
+ if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
+ return true;
- Lex();
+ if (getLexer().isNot(AsmToken::Comma))
+ return TokError("unexpected token in directive");
+ Lex();
- TheCondState.CondMet = ExprValue;
- TheCondState.Ignore = !TheCondState.CondMet;
- }
+ int64_t Offset = 0;
+ if (ParseAbsoluteExpression(Offset))
+ return true;
+ getStreamer().EmitCFIDefCfa(Register, Offset);
return false;
}
-/// ParseDirectiveIfb
-/// ::= .ifb string
-bool AsmParser::ParseDirectiveIfb(SMLoc DirectiveLoc, bool ExpectBlank) {
- TheCondStack.push_back(TheCondState);
- TheCondState.TheCond = AsmCond::IfCond;
+/// ParseDirectiveCFIDefCfaOffset
+/// ::= .cfi_def_cfa_offset offset
+bool AsmParser::ParseDirectiveCFIDefCfaOffset() {
+ int64_t Offset = 0;
+ if (ParseAbsoluteExpression(Offset))
+ return true;
- if (TheCondState.Ignore) {
- EatToEndOfStatement();
- } else {
- StringRef Str = ParseStringToEndOfStatement();
+ getStreamer().EmitCFIDefCfaOffset(Offset);
+ return false;
+}
- if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in '.ifb' directive");
+/// ParseDirectiveCFIRegister
+/// ::= .cfi_register register, register
+bool AsmParser::ParseDirectiveCFIRegister(SMLoc DirectiveLoc) {
+ int64_t Register1 = 0;
+ if (ParseRegisterOrRegisterNumber(Register1, DirectiveLoc))
+ return true;
- Lex();
+ if (getLexer().isNot(AsmToken::Comma))
+ return TokError("unexpected token in directive");
+ Lex();
- TheCondState.CondMet = ExpectBlank == Str.empty();
- TheCondState.Ignore = !TheCondState.CondMet;
- }
+ int64_t Register2 = 0;
+ if (ParseRegisterOrRegisterNumber(Register2, DirectiveLoc))
+ return true;
+ getStreamer().EmitCFIRegister(Register1, Register2);
return false;
}
-/// ParseDirectiveIfc
-/// ::= .ifc string1, string2
-bool AsmParser::ParseDirectiveIfc(SMLoc DirectiveLoc, bool ExpectEqual) {
- TheCondStack.push_back(TheCondState);
- TheCondState.TheCond = AsmCond::IfCond;
+/// ParseDirectiveCFIAdjustCfaOffset
+/// ::= .cfi_adjust_cfa_offset adjustment
+bool AsmParser::ParseDirectiveCFIAdjustCfaOffset() {
+ int64_t Adjustment = 0;
+ if (ParseAbsoluteExpression(Adjustment))
+ return true;
- if (TheCondState.Ignore) {
- EatToEndOfStatement();
- } else {
- StringRef Str1 = ParseStringToComma();
+ getStreamer().EmitCFIAdjustCfaOffset(Adjustment);
+ return false;
+}
- if (getLexer().isNot(AsmToken::Comma))
- return TokError("unexpected token in '.ifc' directive");
+/// ParseDirectiveCFIDefCfaRegister
+/// ::= .cfi_def_cfa_register register
+bool AsmParser::ParseDirectiveCFIDefCfaRegister(SMLoc DirectiveLoc) {
+ int64_t Register = 0;
+ if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
+ return true;
- Lex();
+ getStreamer().EmitCFIDefCfaRegister(Register);
+ return false;
+}
- StringRef Str2 = ParseStringToEndOfStatement();
+/// ParseDirectiveCFIOffset
+/// ::= .cfi_offset register, offset
+bool AsmParser::ParseDirectiveCFIOffset(SMLoc DirectiveLoc) {
+ int64_t Register = 0;
+ int64_t Offset = 0;
- if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in '.ifc' directive");
+ if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
+ return true;
- Lex();
+ if (getLexer().isNot(AsmToken::Comma))
+ return TokError("unexpected token in directive");
+ Lex();
- TheCondState.CondMet = ExpectEqual == (Str1 == Str2);
- TheCondState.Ignore = !TheCondState.CondMet;
- }
+ if (ParseAbsoluteExpression(Offset))
+ return true;
+ getStreamer().EmitCFIOffset(Register, Offset);
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'");
+/// ParseDirectiveCFIRelOffset
+/// ::= .cfi_rel_offset register, offset
+bool AsmParser::ParseDirectiveCFIRelOffset(SMLoc DirectiveLoc) {
+ int64_t Register = 0;
- Lex();
+ if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
+ return true;
- MCSymbol *Sym = getContext().LookupSymbol(Name);
+ if (getLexer().isNot(AsmToken::Comma))
+ return TokError("unexpected token in directive");
+ Lex();
- if (expect_defined)
- TheCondState.CondMet = (Sym != NULL && !Sym->isUndefined());
- else
- TheCondState.CondMet = (Sym == NULL || Sym->isUndefined());
- TheCondState.Ignore = !TheCondState.CondMet;
- }
+ int64_t Offset = 0;
+ if (ParseAbsoluteExpression(Offset))
+ return true;
+ getStreamer().EmitCFIRelOffset(Register, Offset);
return false;
}
-/// ParseDirectiveElseIf
-/// ::= .elseif expression
-bool AsmParser::ParseDirectiveElseIf(SMLoc DirectiveLoc) {
- if (TheCondState.TheCond != AsmCond::IfCond &&
- TheCondState.TheCond != AsmCond::ElseIfCond)
- Error(DirectiveLoc, "Encountered a .elseif that doesn't follow a .if or "
- " an .elseif");
- TheCondState.TheCond = AsmCond::ElseIfCond;
+static bool isValidEncoding(int64_t Encoding) {
+ if (Encoding & ~0xff)
+ return false;
- bool LastIgnoreState = false;
- if (!TheCondStack.empty())
- LastIgnoreState = TheCondStack.back().Ignore;
- if (LastIgnoreState || TheCondState.CondMet) {
- TheCondState.Ignore = true;
- EatToEndOfStatement();
- }
- else {
- int64_t ExprValue;
- if (ParseAbsoluteExpression(ExprValue))
- return true;
+ if (Encoding == dwarf::DW_EH_PE_omit)
+ return true;
- if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in '.elseif' directive");
+ 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;
- Lex();
- TheCondState.CondMet = ExprValue;
- TheCondState.Ignore = !TheCondState.CondMet;
- }
+ const unsigned Application = Encoding & 0x70;
+ if (Application != dwarf::DW_EH_PE_absptr &&
+ Application != dwarf::DW_EH_PE_pcrel)
+ return false;
- return false;
+ return true;
}
-/// ParseDirectiveElse
-/// ::= .else
-bool AsmParser::ParseDirectiveElse(SMLoc DirectiveLoc) {
- if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in '.else' directive");
+/// ParseDirectiveCFIPersonalityOrLsda
+/// IsPersonality true for cfi_personality, false for cfi_lsda
+/// ::= .cfi_personality encoding, [symbol_name]
+/// ::= .cfi_lsda encoding, [symbol_name]
+bool AsmParser::ParseDirectiveCFIPersonalityOrLsda(bool IsPersonality) {
+ int64_t Encoding = 0;
+ if (ParseAbsoluteExpression(Encoding))
+ return true;
+ 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();
- if (TheCondState.TheCond != AsmCond::IfCond &&
- TheCondState.TheCond != AsmCond::ElseIfCond)
- Error(DirectiveLoc, "Encountered a .else that doesn't follow a .if or an "
- ".elseif");
- TheCondState.TheCond = AsmCond::ElseCond;
- bool LastIgnoreState = false;
- if (!TheCondStack.empty())
- LastIgnoreState = TheCondStack.back().Ignore;
- if (LastIgnoreState || TheCondState.CondMet)
- TheCondState.Ignore = true;
- else
- TheCondState.Ignore = false;
+ StringRef Name;
+ if (ParseIdentifier(Name))
+ return TokError("expected identifier in directive");
+ MCSymbol *Sym = getContext().GetOrCreateSymbol(Name);
+
+ if (IsPersonality)
+ getStreamer().EmitCFIPersonality(Sym, Encoding);
+ else
+ getStreamer().EmitCFILsda(Sym, Encoding);
return false;
}
-/// ParseDirectiveEndIf
-/// ::= .endif
-bool AsmParser::ParseDirectiveEndIf(SMLoc DirectiveLoc) {
- if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in '.endif' directive");
-
- Lex();
-
- if ((TheCondState.TheCond == AsmCond::NoCond) ||
- TheCondStack.empty())
- Error(DirectiveLoc, "Encountered a .endif that doesn't follow a .if or "
- ".else");
- if (!TheCondStack.empty()) {
- TheCondState = TheCondStack.back();
- TheCondStack.pop_back();
- }
-
+/// ParseDirectiveCFIRememberState
+/// ::= .cfi_remember_state
+bool AsmParser::ParseDirectiveCFIRememberState() {
+ getStreamer().EmitCFIRememberState();
return false;
}
-/// ParseDirectiveFile
-/// ::= .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;
- SMLoc FileNumberLoc = getLexer().getLoc();
- if (getLexer().is(AsmToken::Integer)) {
- FileNumber = getTok().getIntVal();
- Lex();
-
- if (FileNumber < 1)
- return TokError("file number less than one");
- }
-
- if (getLexer().isNot(AsmToken::String))
- return TokError("unexpected token in '.file' directive");
-
- // Usually the directory and filename together, otherwise just the directory.
- StringRef Path = getTok().getString();
- Path = Path.substr(1, Path.size()-2);
- Lex();
+/// ParseDirectiveCFIRestoreState
+/// ::= .cfi_remember_state
+bool AsmParser::ParseDirectiveCFIRestoreState() {
+ getStreamer().EmitCFIRestoreState();
+ return false;
+}
- 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;
- }
+/// ParseDirectiveCFISameValue
+/// ::= .cfi_same_value register
+bool AsmParser::ParseDirectiveCFISameValue(SMLoc DirectiveLoc) {
+ int64_t Register = 0;
- if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in '.file' directive");
+ if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
+ return true;
- if (FileNumber == -1)
- getStreamer().EmitFileDirective(Filename);
- else {
- 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");
+ getStreamer().EmitCFISameValue(Register);
+ return false;
+}
- if (getStreamer().EmitDwarfFileDirective(FileNumber, Directory, Filename))
- Error(FileNumberLoc, "file number already allocated");
- }
+/// ParseDirectiveCFIRestore
+/// ::= .cfi_restore register
+bool AsmParser::ParseDirectiveCFIRestore(SMLoc DirectiveLoc) {
+ int64_t Register = 0;
+ if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
+ return true;
+ getStreamer().EmitCFIRestore(Register);
return false;
}
-/// ParseDirectiveLine
-/// ::= .line [number]
-bool GenericAsmParser::ParseDirectiveLine(StringRef, SMLoc DirectiveLoc) {
- if (getLexer().isNot(AsmToken::EndOfStatement)) {
- if (getLexer().isNot(AsmToken::Integer))
- return TokError("unexpected token in '.line' directive");
+/// ParseDirectiveCFIEscape
+/// ::= .cfi_escape expression[,...]
+bool AsmParser::ParseDirectiveCFIEscape() {
+ std::string Values;
+ int64_t CurrValue;
+ if (ParseAbsoluteExpression(CurrValue))
+ return true;
+
+ Values.push_back((uint8_t)CurrValue);
- int64_t LineNumber = getTok().getIntVal();
- (void) LineNumber;
+ while (getLexer().is(AsmToken::Comma)) {
Lex();
- // FIXME: Do something with the .line.
+ if (ParseAbsoluteExpression(CurrValue))
+ return true;
+
+ Values.push_back((uint8_t)CurrValue);
}
+ getStreamer().EmitCFIEscape(Values);
+ return false;
+}
+
+/// ParseDirectiveCFISignalFrame
+/// ::= .cfi_signal_frame
+bool AsmParser::ParseDirectiveCFISignalFrame() {
if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in '.line' directive");
+ return Error(getLexer().getLoc(),
+ "unexpected token in '.cfi_signal_frame'");
+ getStreamer().EmitCFISignalFrame();
return false;
}
+/// ParseDirectiveCFIUndefined
+/// ::= .cfi_undefined register
+bool AsmParser::ParseDirectiveCFIUndefined(SMLoc DirectiveLoc) {
+ int64_t Register = 0;
-/// ParseDirectiveLoc
-/// ::= .loc FileNumber [LineNumber] [ColumnPos] [basic_block] [prologue_end]
-/// [epilogue_begin] [is_stmt VALUE] [isa VALUE]
-/// The first number is a file number, must have been previously assigned with
-/// a .file directive, the second number is the line number and optionally the
-/// third number is a column position (zero if not specified). The remaining
-/// optional items are .loc sub-directives.
-bool GenericAsmParser::ParseDirectiveLoc(StringRef, SMLoc DirectiveLoc) {
+ if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
+ return true;
- if (getLexer().isNot(AsmToken::Integer))
- return TokError("unexpected token in '.loc' directive");
- int64_t FileNumber = getTok().getIntVal();
- if (FileNumber < 1)
- return TokError("file number less than one in '.loc' directive");
- if (!getContext().isValidDwarfFileNumber(FileNumber))
- return TokError("unassigned file number in '.loc' directive");
- Lex();
+ getStreamer().EmitCFIUndefined(Register);
+ return false;
+}
- int64_t LineNumber = 0;
- if (getLexer().is(AsmToken::Integer)) {
- LineNumber = getTok().getIntVal();
- if (LineNumber < 1)
- return TokError("line number less than one in '.loc' directive");
- Lex();
- }
+/// ParseDirectiveMacrosOnOff
+/// ::= .macros_on
+/// ::= .macros_off
+bool AsmParser::ParseDirectiveMacrosOnOff(StringRef Directive) {
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return Error(getLexer().getLoc(),
+ "unexpected token in '" + Directive + "' directive");
- int64_t ColumnPos = 0;
- if (getLexer().is(AsmToken::Integer)) {
- ColumnPos = getTok().getIntVal();
- if (ColumnPos < 0)
- return TokError("column position less than zero in '.loc' directive");
- Lex();
- }
+ SetMacrosEnabled(Directive == ".macros_on");
+ return false;
+}
- unsigned Flags = DWARF2_LINE_DEFAULT_IS_STMT ? DWARF2_FLAG_IS_STMT : 0;
- unsigned Isa = 0;
- int64_t Discriminator = 0;
+/// ParseDirectiveMacro
+/// ::= .macro name [parameters]
+bool AsmParser::ParseDirectiveMacro(SMLoc DirectiveLoc) {
+ StringRef Name;
+ if (ParseIdentifier(Name))
+ return TokError("expected identifier in '.macro' directive");
+
+ MCAsmMacroParameters Parameters;
+ // Argument delimiter is initially unknown. It will be set by
+ // ParseMacroArgument()
+ AsmToken::TokenKind ArgumentDelimiter = AsmToken::Eof;
if (getLexer().isNot(AsmToken::EndOfStatement)) {
for (;;) {
- if (getLexer().is(AsmToken::EndOfStatement))
- break;
-
- StringRef Name;
- SMLoc Loc = getTok().getLoc();
- if (getParser().ParseIdentifier(Name))
- return TokError("unexpected token in '.loc' directive");
+ MCAsmMacroParameter Parameter;
+ if (ParseIdentifier(Parameter.first))
+ return TokError("expected identifier in '.macro' directive");
- if (Name == "basic_block")
- Flags |= DWARF2_FLAG_BASIC_BLOCK;
- else if (Name == "prologue_end")
- Flags |= DWARF2_FLAG_PROLOGUE_END;
- else if (Name == "epilogue_begin")
- Flags |= DWARF2_FLAG_EPILOGUE_BEGIN;
- else if (Name == "is_stmt") {
- SMLoc Loc = getTok().getLoc();
- const MCExpr *Value;
- if (getParser().ParseExpression(Value))
- return true;
- // The expression must be the constant 0 or 1.
- if (const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(Value)) {
- int Value = MCE->getValue();
- if (Value == 0)
- Flags &= ~DWARF2_FLAG_IS_STMT;
- else if (Value == 1)
- Flags |= DWARF2_FLAG_IS_STMT;
- else
- return Error(Loc, "is_stmt value not 0 or 1");
- }
- else {
- return Error(Loc, "is_stmt value not the constant value of 0 or 1");
- }
- }
- else if (Name == "isa") {
- SMLoc Loc = getTok().getLoc();
- const MCExpr *Value;
- if (getParser().ParseExpression(Value))
- return true;
- // The expression must be a constant greater or equal to 0.
- if (const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(Value)) {
- int Value = MCE->getValue();
- if (Value < 0)
- return Error(Loc, "isa number less than zero");
- Isa = Value;
- }
- else {
- return Error(Loc, "isa number not a constant value");
- }
- }
- else if (Name == "discriminator") {
- if (getParser().ParseAbsoluteExpression(Discriminator))
+ if (getLexer().is(AsmToken::Equal)) {
+ Lex();
+ if (ParseMacroArgument(Parameter.second, ArgumentDelimiter))
return true;
}
- else {
- return Error(Loc, "unknown sub-directive in '.loc' directive");
- }
- if (getLexer().is(AsmToken::EndOfStatement))
+ Parameters.push_back(Parameter);
+
+ if (getLexer().is(AsmToken::Comma))
+ Lex();
+ else if (getLexer().is(AsmToken::EndOfStatement))
break;
}
}
- getStreamer().EmitDwarfLocDirective(FileNumber, LineNumber, ColumnPos, Flags,
- Isa, Discriminator, StringRef());
+ // Eat the end of statement.
+ Lex();
+ AsmToken EndToken, StartToken = getTok();
+
+ // Lex the macro definition.
+ for (;;) {
+ // Check whether we have reached the end of the file.
+ if (getLexer().is(AsmToken::Eof))
+ return Error(DirectiveLoc, "no matching '.endmacro' in definition");
+
+ // Otherwise, check whether we have reach the .endmacro.
+ if (getLexer().is(AsmToken::Identifier) &&
+ (getTok().getIdentifier() == ".endm" ||
+ getTok().getIdentifier() == ".endmacro")) {
+ EndToken = getTok();
+ Lex();
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '" + EndToken.getIdentifier() +
+ "' directive");
+ break;
+ }
+
+ // Otherwise, scan til the end of the statement.
+ EatToEndOfStatement();
+ }
+
+ if (LookupMacro(Name)) {
+ return Error(DirectiveLoc, "macro '" + Name + "' is already defined");
+ }
+
+ const char *BodyStart = StartToken.getLoc().getPointer();
+ const char *BodyEnd = EndToken.getLoc().getPointer();
+ StringRef Body = StringRef(BodyStart, BodyEnd - BodyStart);
+ DefineMacro(Name, MCAsmMacro(Name, Body, Parameters));
return false;
}
-/// ParseDirectiveStabs
-/// ::= .stabs string, number, number, number
-bool GenericAsmParser::ParseDirectiveStabs(StringRef Directive,
- SMLoc DirectiveLoc) {
- return TokError("unsupported directive '" + Directive + "'");
+/// ParseDirectiveEndMacro
+/// ::= .endm
+/// ::= .endmacro
+bool AsmParser::ParseDirectiveEndMacro(StringRef Directive) {
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '" + Directive + "' directive");
+
+ // If we are inside a macro instantiation, terminate the current
+ // instantiation.
+ if (InsideMacroInstantiation()) {
+ HandleMacroExit();
+ return false;
+ }
+
+ // Otherwise, this .endmacro is a stray entry in the file; well formed
+ // .endmacro directives are handled during the macro definition parsing.
+ return TokError("unexpected '" + Directive + "' in file, "
+ "no current macro definition");
}
-/// ParseDirectiveCFISections
-/// ::= .cfi_sections section [, section]
-bool GenericAsmParser::ParseDirectiveCFISections(StringRef,
- SMLoc DirectiveLoc) {
+/// ParseDirectivePurgeMacro
+/// ::= .purgem
+bool AsmParser::ParseDirectivePurgeMacro(SMLoc DirectiveLoc) {
StringRef Name;
- bool EH = false;
- bool Debug = false;
+ if (ParseIdentifier(Name))
+ return TokError("expected identifier in '.purgem' directive");
- if (getParser().ParseIdentifier(Name))
- return TokError("Expected an identifier");
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '.purgem' directive");
- if (Name == ".eh_frame")
- EH = true;
- else if (Name == ".debug_frame")
- Debug = true;
+ if (!LookupMacro(Name))
+ return Error(DirectiveLoc, "macro '" + Name + "' is not defined");
- if (getLexer().is(AsmToken::Comma)) {
- Lex();
+ UndefineMacro(Name);
+ return false;
+}
- if (getParser().ParseIdentifier(Name))
- return TokError("Expected an identifier");
+/// ParseDirectiveBundleAlignMode
+/// ::= {.bundle_align_mode} expression
+bool AsmParser::ParseDirectiveBundleAlignMode() {
+ CheckForValidSection();
- if (Name == ".eh_frame")
- EH = true;
- else if (Name == ".debug_frame")
- Debug = true;
- }
+ // 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)");
- getStreamer().EmitCFISections(EH, Debug);
+ Lex();
+ // Because of AlignSizePow2's verified range we can safely truncate it to
+ // unsigned.
+ getStreamer().EmitBundleAlignMode(static_cast<unsigned>(AlignSizePow2));
return false;
}
-/// ParseDirectiveCFIStartProc
-/// ::= .cfi_startproc
-bool GenericAsmParser::ParseDirectiveCFIStartProc(StringRef,
- SMLoc DirectiveLoc) {
- getStreamer().EmitCFIStartProc();
+/// 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;
}
-/// ParseDirectiveCFIEndProc
-/// ::= .cfi_endproc
-bool GenericAsmParser::ParseDirectiveCFIEndProc(StringRef, SMLoc DirectiveLoc) {
- getStreamer().EmitCFIEndProc();
+/// 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;
}
-/// ParseRegisterOrRegisterNumber - parse register name or number.
-bool GenericAsmParser::ParseRegisterOrRegisterNumber(int64_t &Register,
- SMLoc DirectiveLoc) {
- unsigned RegNo;
+/// ParseDirectiveSpace
+/// ::= (.skip | .space) expression [ , expression ]
+bool AsmParser::ParseDirectiveSpace(StringRef IDVal) {
+ CheckForValidSection();
- if (getLexer().isNot(AsmToken::Integer)) {
- if (getParser().getTargetParser().ParseRegister(RegNo, DirectiveLoc,
- DirectiveLoc))
+ 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 '" + Twine(IDVal) + "' directive");
+ Lex();
+
+ if (ParseAbsoluteExpression(FillExpr))
return true;
- Register = getContext().getRegisterInfo().getDwarfRegNum(RegNo, true);
- } else
- return getParser().ParseAbsoluteExpression(Register);
+
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '" + Twine(IDVal) + "' directive");
+ }
+
+ Lex();
+
+ if (NumBytes <= 0)
+ return TokError("invalid number of bytes in '" +
+ Twine(IDVal) + "' directive");
+
+ // FIXME: Sometimes the fill expr is 'nop' if it isn't supplied, instead of 0.
+ getStreamer().EmitFill(NumBytes, FillExpr, DEFAULT_ADDRSPACE);
return false;
}
-/// ParseDirectiveCFIDefCfa
-/// ::= .cfi_def_cfa register, offset
-bool GenericAsmParser::ParseDirectiveCFIDefCfa(StringRef,
- SMLoc DirectiveLoc) {
- int64_t Register = 0;
- if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
+/// ParseDirectiveLEB128
+/// ::= (.sleb128 | .uleb128) expression
+bool AsmParser::ParseDirectiveLEB128(bool Signed) {
+ CheckForValidSection();
+ const MCExpr *Value;
+
+ if (ParseExpression(Value))
return true;
- if (getLexer().isNot(AsmToken::Comma))
+ if (getLexer().isNot(AsmToken::EndOfStatement))
return TokError("unexpected token in directive");
- Lex();
- int64_t Offset = 0;
- if (getParser().ParseAbsoluteExpression(Offset))
- return true;
+ if (Signed)
+ getStreamer().EmitSLEB128Value(Value);
+ else
+ getStreamer().EmitULEB128Value(Value);
- 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;
+/// ParseDirectiveSymbolAttribute
+/// ::= { ".globl", ".weak", ... } [ identifier ( , identifier )* ]
+bool AsmParser::ParseDirectiveSymbolAttribute(MCSymbolAttr Attr) {
+ if (getLexer().isNot(AsmToken::EndOfStatement)) {
+ for (;;) {
+ StringRef Name;
+ SMLoc Loc = getTok().getLoc();
- getStreamer().EmitCFIDefCfaOffset(Offset);
- return false;
-}
+ if (ParseIdentifier(Name))
+ return Error(Loc, "expected identifier in directive");
-/// ParseDirectiveCFIAdjustCfaOffset
-/// ::= .cfi_adjust_cfa_offset adjustment
-bool GenericAsmParser::ParseDirectiveCFIAdjustCfaOffset(StringRef,
- SMLoc DirectiveLoc) {
- int64_t Adjustment = 0;
- if (getParser().ParseAbsoluteExpression(Adjustment))
- return true;
+ MCSymbol *Sym = getContext().GetOrCreateSymbol(Name);
- getStreamer().EmitCFIAdjustCfaOffset(Adjustment);
- return false;
-}
+ // Assembler local symbols don't make any sense here. Complain loudly.
+ if (Sym->isTemporary())
+ return Error(Loc, "non-local symbol required in directive");
-/// ParseDirectiveCFIDefCfaRegister
-/// ::= .cfi_def_cfa_register register
-bool GenericAsmParser::ParseDirectiveCFIDefCfaRegister(StringRef,
- SMLoc DirectiveLoc) {
- int64_t Register = 0;
- if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
- return true;
+ getStreamer().EmitSymbolAttribute(Sym, Attr);
- getStreamer().EmitCFIDefCfaRegister(Register);
+ if (getLexer().is(AsmToken::EndOfStatement))
+ break;
+
+ if (getLexer().isNot(AsmToken::Comma))
+ return TokError("unexpected token in directive");
+ Lex();
+ }
+ }
+
+ Lex();
return false;
}
-/// ParseDirectiveCFIOffset
-/// ::= .cfi_offset register, offset
-bool GenericAsmParser::ParseDirectiveCFIOffset(StringRef, SMLoc DirectiveLoc) {
- int64_t Register = 0;
- int64_t Offset = 0;
+/// ParseDirectiveComm
+/// ::= ( .comm | .lcomm ) identifier , size_expression [ , align_expression ]
+bool AsmParser::ParseDirectiveComm(bool IsLocal) {
+ CheckForValidSection();
- if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
- return true;
+ SMLoc IDLoc = getLexer().getLoc();
+ StringRef Name;
+ if (ParseIdentifier(Name))
+ return TokError("expected identifier in directive");
+
+ // Handle the identifier as the key symbol.
+ MCSymbol *Sym = getContext().GetOrCreateSymbol(Name);
if (getLexer().isNot(AsmToken::Comma))
return TokError("unexpected token in directive");
Lex();
- if (getParser().ParseAbsoluteExpression(Offset))
+ int64_t Size;
+ SMLoc SizeLoc = getLexer().getLoc();
+ if (ParseAbsoluteExpression(Size))
return true;
- getStreamer().EmitCFIOffset(Register, Offset);
- return false;
-}
+ int64_t Pow2Alignment = 0;
+ SMLoc Pow2AlignmentLoc;
+ if (getLexer().is(AsmToken::Comma)) {
+ Lex();
+ Pow2AlignmentLoc = getLexer().getLoc();
+ if (ParseAbsoluteExpression(Pow2Alignment))
+ return true;
-/// ParseDirectiveCFIRelOffset
-/// ::= .cfi_rel_offset register, offset
-bool GenericAsmParser::ParseDirectiveCFIRelOffset(StringRef,
- SMLoc DirectiveLoc) {
- int64_t Register = 0;
+ LCOMM::LCOMMType LCOMM = Lexer.getMAI().getLCOMMDirectiveAlignmentType();
+ if (IsLocal && LCOMM == LCOMM::NoAlignment)
+ return Error(Pow2AlignmentLoc, "alignment not supported on this target");
- if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
- return true;
+ // If this target takes alignments in bytes (not log) validate and convert.
+ 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 (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '.comm' or '.lcomm' directive");
- if (getLexer().isNot(AsmToken::Comma))
- return TokError("unexpected token in directive");
Lex();
- int64_t Offset = 0;
- if (getParser().ParseAbsoluteExpression(Offset))
- return true;
+ // NOTE: a size of zero for a .comm should create a undefined symbol
+ // but a size of .lcomm creates a bss symbol of size zero.
+ if (Size < 0)
+ return Error(SizeLoc, "invalid '.comm' or '.lcomm' directive size, can't "
+ "be less than zero");
- getStreamer().EmitCFIRelOffset(Register, Offset);
+ // NOTE: The alignment in the directive is a power of 2 value, the assembler
+ // may internally end up wanting an alignment in bytes.
+ // FIXME: Diagnose overflow.
+ if (Pow2Alignment < 0)
+ return Error(Pow2AlignmentLoc, "invalid '.comm' or '.lcomm' directive "
+ "alignment, can't be less than zero");
+
+ if (!Sym->isUndefined())
+ return Error(IDLoc, "invalid symbol redefinition");
+
+ // Create the Symbol as a common or local common with Size and Pow2Alignment
+ if (IsLocal) {
+ getStreamer().EmitLocalCommonSymbol(Sym, Size, 1 << Pow2Alignment);
+ return false;
+ }
+
+ getStreamer().EmitCommonSymbol(Sym, Size, 1 << Pow2Alignment);
return false;
}
-static bool isValidEncoding(int64_t Encoding) {
- if (Encoding & ~0xff)
- return false;
+/// ParseDirectiveAbort
+/// ::= .abort [... message ...]
+bool AsmParser::ParseDirectiveAbort() {
+ // FIXME: Use loc from directive.
+ SMLoc Loc = getLexer().getLoc();
- if (Encoding == dwarf::DW_EH_PE_omit)
- return true;
+ StringRef Str = ParseStringToEndOfStatement();
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '.abort' directive");
- 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;
+ Lex();
- const unsigned Application = Encoding & 0x70;
- if (Application != dwarf::DW_EH_PE_absptr &&
- Application != dwarf::DW_EH_PE_pcrel)
- return false;
+ if (Str.empty())
+ Error(Loc, ".abort detected. Assembly stopping.");
+ else
+ Error(Loc, ".abort '" + Str + "' detected. Assembly stopping.");
+ // FIXME: Actually abort assembly here.
- return true;
+ return false;
}
-/// ParseDirectiveCFIPersonalityOrLsda
-/// ::= .cfi_personality encoding, [symbol_name]
-/// ::= .cfi_lsda encoding, [symbol_name]
-bool GenericAsmParser::ParseDirectiveCFIPersonalityOrLsda(StringRef IDVal,
- SMLoc DirectiveLoc) {
- int64_t Encoding = 0;
- if (getParser().ParseAbsoluteExpression(Encoding))
- return true;
- if (Encoding == dwarf::DW_EH_PE_omit)
- return false;
-
- if (!isValidEncoding(Encoding))
- return TokError("unsupported encoding.");
+/// ParseDirectiveInclude
+/// ::= .include "filename"
+bool AsmParser::ParseDirectiveInclude() {
+ if (getLexer().isNot(AsmToken::String))
+ return TokError("expected string in '.include' directive");
- if (getLexer().isNot(AsmToken::Comma))
- return TokError("unexpected token in directive");
+ std::string Filename = getTok().getString();
+ SMLoc IncludeLoc = getLexer().getLoc();
Lex();
- StringRef Name;
- if (getParser().ParseIdentifier(Name))
- return TokError("expected identifier in directive");
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '.include' directive");
- MCSymbol *Sym = getContext().GetOrCreateSymbol(Name);
+ // Strip the quotes.
+ Filename = Filename.substr(1, Filename.size()-2);
- if (IDVal == ".cfi_personality")
- getStreamer().EmitCFIPersonality(Sym, Encoding);
- else {
- assert(IDVal == ".cfi_lsda");
- getStreamer().EmitCFILsda(Sym, Encoding);
+ // Attempt to switch the lexer to the included file before consuming the end
+ // of statement to avoid losing it when we switch.
+ if (EnterIncludeFile(Filename)) {
+ Error(IncludeLoc, "Could not find include file '" + Filename + "'");
+ return true;
}
- 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;
+/// ParseDirectiveIncbin
+/// ::= .incbin "filename"
+bool AsmParser::ParseDirectiveIncbin() {
+ if (getLexer().isNot(AsmToken::String))
+ return TokError("expected string in '.incbin' directive");
- if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
- return true;
+ std::string Filename = getTok().getString();
+ SMLoc IncbinLoc = getLexer().getLoc();
+ Lex();
- getStreamer().EmitCFISameValue(Register);
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '.incbin' directive");
- return false;
-}
+ // Strip the quotes.
+ Filename = Filename.substr(1, Filename.size()-2);
-/// ParseDirectiveCFIRestore
-/// ::= .cfi_restore register
-bool GenericAsmParser::ParseDirectiveCFIRestore(StringRef IDVal,
- SMLoc DirectiveLoc) {
- int64_t Register = 0;
- if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
+ // Attempt to process the included file.
+ if (ProcessIncbinFile(Filename)) {
+ Error(IncbinLoc, "Could not find incbin file '" + Filename + "'");
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);
+/// ParseDirectiveIf
+/// ::= .if expression
+bool AsmParser::ParseDirectiveIf(SMLoc DirectiveLoc) {
+ TheCondStack.push_back(TheCondState);
+ TheCondState.TheCond = AsmCond::IfCond;
+ if (TheCondState.Ignore) {
+ EatToEndOfStatement();
+ } else {
+ int64_t ExprValue;
+ if (ParseAbsoluteExpression(ExprValue))
+ return true;
- while (getLexer().is(AsmToken::Comma)) {
- Lex();
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '.if' directive");
- if (getParser().ParseAbsoluteExpression(CurrValue))
- return true;
+ Lex();
- Values.push_back((uint8_t)CurrValue);
+ TheCondState.CondMet = ExprValue;
+ TheCondState.Ignore = !TheCondState.CondMet;
}
- 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");
+/// ParseDirectiveIfb
+/// ::= .ifb string
+bool AsmParser::ParseDirectiveIfb(SMLoc DirectiveLoc, bool ExpectBlank) {
+ TheCondStack.push_back(TheCondState);
+ TheCondState.TheCond = AsmCond::IfCond;
- getStreamer().EmitCFISignalFrame();
+ if (TheCondState.Ignore) {
+ EatToEndOfStatement();
+ } else {
+ StringRef Str = ParseStringToEndOfStatement();
- return false;
-}
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '.ifb' directive");
-/// ParseDirectiveMacrosOnOff
-/// ::= .macros_on
-/// ::= .macros_off
-bool GenericAsmParser::ParseDirectiveMacrosOnOff(StringRef Directive,
- SMLoc DirectiveLoc) {
- if (getLexer().isNot(AsmToken::EndOfStatement))
- return Error(getLexer().getLoc(),
- "unexpected token in '" + Directive + "' directive");
+ Lex();
- getParser().MacrosEnabled = Directive == ".macros_on";
+ TheCondState.CondMet = ExpectBlank == Str.empty();
+ TheCondState.Ignore = !TheCondState.CondMet;
+ }
return false;
}
-/// ParseDirectiveMacro
-/// ::= .macro name [parameters]
-bool GenericAsmParser::ParseDirectiveMacro(StringRef Directive,
- SMLoc DirectiveLoc) {
- StringRef Name;
- if (getParser().ParseIdentifier(Name))
- return TokError("expected identifier in directive");
-
- std::vector<StringRef> Parameters;
- if (getLexer().isNot(AsmToken::EndOfStatement)) {
- for(;;) {
- StringRef Parameter;
- if (getParser().ParseIdentifier(Parameter))
- return TokError("expected identifier in directive");
- Parameters.push_back(Parameter);
-
- if (getLexer().isNot(AsmToken::Comma))
- break;
- Lex();
- }
- }
+/// ParseDirectiveIfc
+/// ::= .ifc string1, string2
+bool AsmParser::ParseDirectiveIfc(SMLoc DirectiveLoc, bool ExpectEqual) {
+ TheCondStack.push_back(TheCondState);
+ TheCondState.TheCond = AsmCond::IfCond;
- if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in '.macro' directive");
+ if (TheCondState.Ignore) {
+ EatToEndOfStatement();
+ } else {
+ StringRef Str1 = ParseStringToComma();
- // Eat the end of statement.
- Lex();
+ if (getLexer().isNot(AsmToken::Comma))
+ return TokError("unexpected token in '.ifc' directive");
- AsmToken EndToken, StartToken = getTok();
+ Lex();
- // Lex the macro definition.
- for (;;) {
- // Check whether we have reached the end of the file.
- if (getLexer().is(AsmToken::Eof))
- return Error(DirectiveLoc, "no matching '.endmacro' in definition");
+ StringRef Str2 = ParseStringToEndOfStatement();
- // Otherwise, check whether we have reach the .endmacro.
- if (getLexer().is(AsmToken::Identifier) &&
- (getTok().getIdentifier() == ".endm" ||
- getTok().getIdentifier() == ".endmacro")) {
- EndToken = getTok();
- Lex();
- if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in '" + EndToken.getIdentifier() +
- "' directive");
- break;
- }
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '.ifc' directive");
- // Otherwise, scan til the end of the statement.
- getParser().EatToEndOfStatement();
- }
+ Lex();
- if (getParser().MacroMap.lookup(Name)) {
- return Error(DirectiveLoc, "macro '" + Name + "' is already defined");
+ TheCondState.CondMet = ExpectEqual == (Str1 == Str2);
+ TheCondState.Ignore = !TheCondState.CondMet;
}
- 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, Parameters);
return false;
}
-/// ParseDirectiveEndMacro
-/// ::= .endm
-/// ::= .endmacro
-bool GenericAsmParser::ParseDirectiveEndMacro(StringRef Directive,
- SMLoc DirectiveLoc) {
- if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in '" + Directive + "' directive");
+/// ParseDirectiveIfdef
+/// ::= .ifdef symbol
+bool AsmParser::ParseDirectiveIfdef(SMLoc DirectiveLoc, bool expect_defined) {
+ StringRef Name;
+ TheCondStack.push_back(TheCondState);
+ TheCondState.TheCond = AsmCond::IfCond;
- // If we are inside a macro instantiation, terminate the current
- // instantiation.
- if (!getParser().ActiveMacros.empty()) {
- getParser().HandleMacroExit();
- return false;
+ 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;
}
- // Otherwise, this .endmacro is a stray entry in the file; well formed
- // .endmacro directives are handled during the macro definition parsing.
- return TokError("unexpected '" + Directive + "' in file, "
- "no current macro definition");
+ return false;
}
-/// ParseDirectivePurgeMacro
-/// ::= .purgem
-bool GenericAsmParser::ParseDirectivePurgeMacro(StringRef Directive,
- SMLoc DirectiveLoc) {
- StringRef Name;
- if (getParser().ParseIdentifier(Name))
- return TokError("expected identifier in '.purgem' directive");
+/// ParseDirectiveElseIf
+/// ::= .elseif expression
+bool AsmParser::ParseDirectiveElseIf(SMLoc DirectiveLoc) {
+ if (TheCondState.TheCond != AsmCond::IfCond &&
+ TheCondState.TheCond != AsmCond::ElseIfCond)
+ Error(DirectiveLoc, "Encountered a .elseif that doesn't follow a .if or "
+ " an .elseif");
+ TheCondState.TheCond = AsmCond::ElseIfCond;
- if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in '.purgem' directive");
+ bool LastIgnoreState = false;
+ if (!TheCondStack.empty())
+ LastIgnoreState = TheCondStack.back().Ignore;
+ if (LastIgnoreState || TheCondState.CondMet) {
+ TheCondState.Ignore = true;
+ EatToEndOfStatement();
+ }
+ else {
+ int64_t ExprValue;
+ if (ParseAbsoluteExpression(ExprValue))
+ return true;
- StringMap<Macro*>::iterator I = getParser().MacroMap.find(Name);
- if (I == getParser().MacroMap.end())
- return Error(DirectiveLoc, "macro '" + Name + "' is not defined");
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '.elseif' directive");
+
+ Lex();
+ TheCondState.CondMet = ExprValue;
+ TheCondState.Ignore = !TheCondState.CondMet;
+ }
- // Undefine the macro.
- delete I->getValue();
- getParser().MacroMap.erase(I);
return false;
}
-bool GenericAsmParser::ParseDirectiveLEB128(StringRef DirName, SMLoc) {
- getParser().CheckForValidSection();
+/// ParseDirectiveElse
+/// ::= .else
+bool AsmParser::ParseDirectiveElse(SMLoc DirectiveLoc) {
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in '.else' directive");
+
+ Lex();
- const MCExpr *Value;
+ if (TheCondState.TheCond != AsmCond::IfCond &&
+ TheCondState.TheCond != AsmCond::ElseIfCond)
+ Error(DirectiveLoc, "Encountered a .else that doesn't follow a .if or an "
+ ".elseif");
+ TheCondState.TheCond = AsmCond::ElseCond;
+ bool LastIgnoreState = false;
+ if (!TheCondStack.empty())
+ LastIgnoreState = TheCondStack.back().Ignore;
+ if (LastIgnoreState || TheCondState.CondMet)
+ TheCondState.Ignore = true;
+ else
+ TheCondState.Ignore = false;
- if (getParser().ParseExpression(Value))
- return true;
+ return false;
+}
+/// ParseDirectiveEndIf
+/// ::= .endif
+bool AsmParser::ParseDirectiveEndIf(SMLoc DirectiveLoc) {
if (getLexer().isNot(AsmToken::EndOfStatement))
- return TokError("unexpected token in directive");
+ return TokError("unexpected token in '.endif' directive");
- if (DirName[1] == 's')
- getStreamer().EmitSLEB128Value(Value);
- else
- getStreamer().EmitULEB128Value(Value);
+ Lex();
+
+ if ((TheCondState.TheCond == AsmCond::NoCond) ||
+ TheCondStack.empty())
+ Error(DirectiveLoc, "Encountered a .endif that doesn't follow a .if or "
+ ".else");
+ if (!TheCondStack.empty()) {
+ TheCondState = TheCondStack.back();
+ TheCondStack.pop_back();
+ }
return false;
}
-Macro *AsmParser::ParseMacroLikeBody(SMLoc DirectiveLoc) {
+void AsmParser::initializeDirectiveKindMap() {
+ DirectiveKindMap[".set"] = DK_SET;
+ DirectiveKindMap[".equ"] = DK_EQU;
+ DirectiveKindMap[".equiv"] = DK_EQUIV;
+ DirectiveKindMap[".ascii"] = DK_ASCII;
+ DirectiveKindMap[".asciz"] = DK_ASCIZ;
+ DirectiveKindMap[".string"] = DK_STRING;
+ DirectiveKindMap[".byte"] = DK_BYTE;
+ DirectiveKindMap[".short"] = DK_SHORT;
+ DirectiveKindMap[".value"] = DK_VALUE;
+ DirectiveKindMap[".2byte"] = DK_2BYTE;
+ DirectiveKindMap[".long"] = DK_LONG;
+ DirectiveKindMap[".int"] = DK_INT;
+ DirectiveKindMap[".4byte"] = DK_4BYTE;
+ DirectiveKindMap[".quad"] = DK_QUAD;
+ DirectiveKindMap[".8byte"] = DK_8BYTE;
+ DirectiveKindMap[".single"] = DK_SINGLE;
+ DirectiveKindMap[".float"] = DK_FLOAT;
+ DirectiveKindMap[".double"] = DK_DOUBLE;
+ DirectiveKindMap[".align"] = DK_ALIGN;
+ DirectiveKindMap[".align32"] = DK_ALIGN32;
+ DirectiveKindMap[".balign"] = DK_BALIGN;
+ DirectiveKindMap[".balignw"] = DK_BALIGNW;
+ DirectiveKindMap[".balignl"] = DK_BALIGNL;
+ DirectiveKindMap[".p2align"] = DK_P2ALIGN;
+ DirectiveKindMap[".p2alignw"] = DK_P2ALIGNW;
+ DirectiveKindMap[".p2alignl"] = DK_P2ALIGNL;
+ DirectiveKindMap[".org"] = DK_ORG;
+ DirectiveKindMap[".fill"] = DK_FILL;
+ DirectiveKindMap[".zero"] = DK_ZERO;
+ DirectiveKindMap[".extern"] = DK_EXTERN;
+ DirectiveKindMap[".globl"] = DK_GLOBL;
+ DirectiveKindMap[".global"] = DK_GLOBAL;
+ DirectiveKindMap[".indirect_symbol"] = DK_INDIRECT_SYMBOL;
+ DirectiveKindMap[".lazy_reference"] = DK_LAZY_REFERENCE;
+ DirectiveKindMap[".no_dead_strip"] = DK_NO_DEAD_STRIP;
+ DirectiveKindMap[".symbol_resolver"] = DK_SYMBOL_RESOLVER;
+ DirectiveKindMap[".private_extern"] = DK_PRIVATE_EXTERN;
+ DirectiveKindMap[".reference"] = DK_REFERENCE;
+ DirectiveKindMap[".weak_definition"] = DK_WEAK_DEFINITION;
+ DirectiveKindMap[".weak_reference"] = DK_WEAK_REFERENCE;
+ DirectiveKindMap[".weak_def_can_be_hidden"] = DK_WEAK_DEF_CAN_BE_HIDDEN;
+ DirectiveKindMap[".comm"] = DK_COMM;
+ DirectiveKindMap[".common"] = DK_COMMON;
+ DirectiveKindMap[".lcomm"] = DK_LCOMM;
+ DirectiveKindMap[".abort"] = DK_ABORT;
+ DirectiveKindMap[".include"] = DK_INCLUDE;
+ DirectiveKindMap[".incbin"] = DK_INCBIN;
+ DirectiveKindMap[".code16"] = DK_CODE16;
+ DirectiveKindMap[".code16gcc"] = DK_CODE16GCC;
+ DirectiveKindMap[".rept"] = DK_REPT;
+ DirectiveKindMap[".irp"] = DK_IRP;
+ DirectiveKindMap[".irpc"] = DK_IRPC;
+ DirectiveKindMap[".endr"] = DK_ENDR;
+ DirectiveKindMap[".bundle_align_mode"] = DK_BUNDLE_ALIGN_MODE;
+ DirectiveKindMap[".bundle_lock"] = DK_BUNDLE_LOCK;
+ DirectiveKindMap[".bundle_unlock"] = DK_BUNDLE_UNLOCK;
+ DirectiveKindMap[".if"] = DK_IF;
+ DirectiveKindMap[".ifb"] = DK_IFB;
+ DirectiveKindMap[".ifnb"] = DK_IFNB;
+ DirectiveKindMap[".ifc"] = DK_IFC;
+ DirectiveKindMap[".ifnc"] = DK_IFNC;
+ DirectiveKindMap[".ifdef"] = DK_IFDEF;
+ DirectiveKindMap[".ifndef"] = DK_IFNDEF;
+ DirectiveKindMap[".ifnotdef"] = DK_IFNOTDEF;
+ DirectiveKindMap[".elseif"] = DK_ELSEIF;
+ DirectiveKindMap[".else"] = DK_ELSE;
+ DirectiveKindMap[".endif"] = DK_ENDIF;
+ DirectiveKindMap[".skip"] = DK_SKIP;
+ DirectiveKindMap[".space"] = DK_SPACE;
+ DirectiveKindMap[".file"] = DK_FILE;
+ DirectiveKindMap[".line"] = DK_LINE;
+ DirectiveKindMap[".loc"] = DK_LOC;
+ DirectiveKindMap[".stabs"] = DK_STABS;
+ DirectiveKindMap[".sleb128"] = DK_SLEB128;
+ DirectiveKindMap[".uleb128"] = DK_ULEB128;
+ DirectiveKindMap[".cfi_sections"] = DK_CFI_SECTIONS;
+ DirectiveKindMap[".cfi_startproc"] = DK_CFI_STARTPROC;
+ DirectiveKindMap[".cfi_endproc"] = DK_CFI_ENDPROC;
+ DirectiveKindMap[".cfi_def_cfa"] = DK_CFI_DEF_CFA;
+ DirectiveKindMap[".cfi_def_cfa_offset"] = DK_CFI_DEF_CFA_OFFSET;
+ DirectiveKindMap[".cfi_adjust_cfa_offset"] = DK_CFI_ADJUST_CFA_OFFSET;
+ DirectiveKindMap[".cfi_def_cfa_register"] = DK_CFI_DEF_CFA_REGISTER;
+ DirectiveKindMap[".cfi_offset"] = DK_CFI_OFFSET;
+ DirectiveKindMap[".cfi_rel_offset"] = DK_CFI_REL_OFFSET;
+ DirectiveKindMap[".cfi_personality"] = DK_CFI_PERSONALITY;
+ DirectiveKindMap[".cfi_lsda"] = DK_CFI_LSDA;
+ DirectiveKindMap[".cfi_remember_state"] = DK_CFI_REMEMBER_STATE;
+ DirectiveKindMap[".cfi_restore_state"] = DK_CFI_RESTORE_STATE;
+ DirectiveKindMap[".cfi_same_value"] = DK_CFI_SAME_VALUE;
+ DirectiveKindMap[".cfi_restore"] = DK_CFI_RESTORE;
+ DirectiveKindMap[".cfi_escape"] = DK_CFI_ESCAPE;
+ DirectiveKindMap[".cfi_signal_frame"] = DK_CFI_SIGNAL_FRAME;
+ DirectiveKindMap[".cfi_undefined"] = DK_CFI_UNDEFINED;
+ DirectiveKindMap[".cfi_register"] = DK_CFI_REGISTER;
+ DirectiveKindMap[".macros_on"] = DK_MACROS_ON;
+ DirectiveKindMap[".macros_off"] = DK_MACROS_OFF;
+ DirectiveKindMap[".macro"] = DK_MACRO;
+ DirectiveKindMap[".endm"] = DK_ENDM;
+ DirectiveKindMap[".endmacro"] = DK_ENDMACRO;
+ DirectiveKindMap[".purgem"] = DK_PURGEM;
+}
+
+
+MCAsmMacro *AsmParser::ParseMacroLikeBody(SMLoc DirectiveLoc) {
AsmToken EndToken, StartToken = getTok();
unsigned NestLevel = 0;
// We Are Anonymous.
StringRef Name;
- std::vector<StringRef> Parameters;
- return new Macro(Name, Body, Parameters);
+ MCAsmMacroParameters Parameters;
+ return new MCAsmMacro(Name, Body, Parameters);
}
-void AsmParser::InstantiateMacroLikeBody(Macro *M, SMLoc DirectiveLoc,
+void AsmParser::InstantiateMacroLikeBody(MCAsmMacro *M, SMLoc DirectiveLoc,
raw_svector_ostream &OS) {
OS << ".endr\n";
// 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);
Lex();
// Lex the rept definition.
- Macro *M = ParseMacroLikeBody(DirectiveLoc);
+ MCAsmMacro *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;
- std::vector<StringRef> Parameters;
- const std::vector<MacroArgument> A;
+ MCAsmMacroParameters Parameters;
+ MCAsmMacroArguments A;
raw_svector_ostream OS(Buf);
while (Count--) {
if (expandMacro(OS, M->Body, Parameters, A, getTok().getLoc()))
/// ParseDirectiveIrp
/// ::= .irp symbol,values
bool AsmParser::ParseDirectiveIrp(SMLoc DirectiveLoc) {
- std::vector<StringRef> Parameters;
- StringRef Parameter;
+ MCAsmMacroParameters Parameters;
+ MCAsmMacroParameter Parameter;
- if (ParseIdentifier(Parameter))
+ if (ParseIdentifier(Parameter.first))
return TokError("expected identifier in '.irp' directive");
Parameters.push_back(Parameter);
Lex();
- std::vector<MacroArgument> A;
+ MCAsmMacroArguments A;
if (ParseMacroArguments(0, A))
return true;
Lex();
// Lex the irp definition.
- Macro *M = ParseMacroLikeBody(DirectiveLoc);
+ MCAsmMacro *M = ParseMacroLikeBody(DirectiveLoc);
if (!M)
return true;
SmallString<256> Buf;
raw_svector_ostream OS(Buf);
- for (std::vector<MacroArgument>::iterator i = A.begin(), e = A.end(); i != e;
- ++i) {
- std::vector<MacroArgument> Args;
+ for (MCAsmMacroArguments::iterator i = A.begin(), e = A.end(); i != e; ++i) {
+ MCAsmMacroArguments Args;
Args.push_back(*i);
if (expandMacro(OS, M->Body, Parameters, Args, getTok().getLoc()))
/// ParseDirectiveIrpc
/// ::= .irpc symbol,values
bool AsmParser::ParseDirectiveIrpc(SMLoc DirectiveLoc) {
- std::vector<StringRef> Parameters;
- StringRef Parameter;
+ MCAsmMacroParameters Parameters;
+ MCAsmMacroParameter Parameter;
- if (ParseIdentifier(Parameter))
+ if (ParseIdentifier(Parameter.first))
return TokError("expected identifier in '.irpc' directive");
Parameters.push_back(Parameter);
Lex();
- std::vector<MacroArgument> A;
+ MCAsmMacroArguments A;
if (ParseMacroArguments(0, A))
return true;
Lex();
// Lex the irpc definition.
- Macro *M = ParseMacroLikeBody(DirectiveLoc);
+ MCAsmMacro *M = ParseMacroLikeBody(DirectiveLoc);
if (!M)
return true;
StringRef Values = A.front().front().getString();
std::size_t I, End = Values.size();
for (I = 0; I < End; ++I) {
- MacroArgument Arg;
+ MCAsmMacroArgument Arg;
Arg.push_back(AsmToken(AsmToken::Identifier, Values.slice(I, I+1)));
- std::vector<MacroArgument> Args;
+ MCAsmMacroArguments Args;
Args.push_back(Arg);
if (expandMacro(OS, M->Body, Parameters, Args, getTok().getLoc()))
bool AsmParser::ParseDirectiveEndr(SMLoc DirectiveLoc) {
if (ActiveMacros.empty())
- return TokError("unexpected '.endr' directive, no current .rept");
+ return TokError("unmatched '.endr' directive");
// The only .repl that should get here are the ones created by
// InstantiateMacroLikeBody.
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.
+ bool IsVarDecl;
+ unsigned Length, Size, Type;
+ void *OpDecl = SI.LookupInlineAsmIdentifier(Operand->getName(), AsmLoc,
+ Length, Size, Type, 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);
+ for (unsigned i = 0; i < NumOutputs; ++i) {
+ OpDecls[i] = std::make_pair(OutputDecls[i], OutputDeclsAddressOf[i]);
+ Constraints[i] = OutputConstraints[i];
+ }
+ for (unsigned i = 0, j = NumOutputs; i < NumInputs; ++i, ++j) {
+ OpDecls[j] = std::make_pair(InputDecls[i], InputDeclsAddressOf[i]);
+ Constraints[j] = 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(SourceMgr &SM,
MCContext &C, MCStreamer &Out,
projects / oota-llvm.git / blobdiff