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-rw-r--r--contrib/llvm/lib/Target/ARM/AsmParser/ARMAsmLexer.cpp140
-rw-r--r--contrib/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp872
-rw-r--r--contrib/llvm/lib/Target/ARM/AsmParser/CMakeLists.txt7
-rw-r--r--contrib/llvm/lib/Target/ARM/AsmParser/Makefile15
4 files changed, 1034 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/ARM/AsmParser/ARMAsmLexer.cpp b/contrib/llvm/lib/Target/ARM/AsmParser/ARMAsmLexer.cpp
new file mode 100644
index 0000000..f859d1b
--- /dev/null
+++ b/contrib/llvm/lib/Target/ARM/AsmParser/ARMAsmLexer.cpp
@@ -0,0 +1,140 @@
+//===-- ARMAsmLexer.cpp - Tokenize ARM assembly to AsmTokens --------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "ARM.h"
+#include "ARMTargetMachine.h"
+
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringExtras.h"
+
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCParser/MCAsmLexer.h"
+#include "llvm/MC/MCParser/MCParsedAsmOperand.h"
+
+#include "llvm/Target/TargetAsmLexer.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetRegistry.h"
+
+#include <string>
+#include <map>
+
+using namespace llvm;
+
+namespace {
+
+ class ARMBaseAsmLexer : public TargetAsmLexer {
+ const MCAsmInfo &AsmInfo;
+
+ const AsmToken &lexDefinite() {
+ return getLexer()->Lex();
+ }
+
+ AsmToken LexTokenUAL();
+ protected:
+ typedef std::map <std::string, unsigned> rmap_ty;
+
+ rmap_ty RegisterMap;
+
+ void InitRegisterMap(const TargetRegisterInfo *info) {
+ unsigned numRegs = info->getNumRegs();
+
+ for (unsigned i = 0; i < numRegs; ++i) {
+ const char *regName = info->getName(i);
+ if (regName)
+ RegisterMap[regName] = i;
+ }
+ }
+
+ unsigned MatchRegisterName(StringRef Name) {
+ rmap_ty::iterator iter = RegisterMap.find(Name.str());
+ if (iter != RegisterMap.end())
+ return iter->second;
+ else
+ return 0;
+ }
+
+ AsmToken LexToken() {
+ if (!Lexer) {
+ SetError(SMLoc(), "No MCAsmLexer installed");
+ return AsmToken(AsmToken::Error, "", 0);
+ }
+
+ switch (AsmInfo.getAssemblerDialect()) {
+ default:
+ SetError(SMLoc(), "Unhandled dialect");
+ return AsmToken(AsmToken::Error, "", 0);
+ case 0:
+ return LexTokenUAL();
+ }
+ }
+ public:
+ ARMBaseAsmLexer(const Target &T, const MCAsmInfo &MAI)
+ : TargetAsmLexer(T), AsmInfo(MAI) {
+ }
+ };
+
+ class ARMAsmLexer : public ARMBaseAsmLexer {
+ public:
+ ARMAsmLexer(const Target &T, const MCAsmInfo &MAI)
+ : ARMBaseAsmLexer(T, MAI) {
+ std::string tripleString("arm-unknown-unknown");
+ std::string featureString;
+ OwningPtr<const TargetMachine>
+ targetMachine(T.createTargetMachine(tripleString, featureString));
+ InitRegisterMap(targetMachine->getRegisterInfo());
+ }
+ };
+
+ class ThumbAsmLexer : public ARMBaseAsmLexer {
+ public:
+ ThumbAsmLexer(const Target &T, const MCAsmInfo &MAI)
+ : ARMBaseAsmLexer(T, MAI) {
+ std::string tripleString("thumb-unknown-unknown");
+ std::string featureString;
+ OwningPtr<const TargetMachine>
+ targetMachine(T.createTargetMachine(tripleString, featureString));
+ InitRegisterMap(targetMachine->getRegisterInfo());
+ }
+ };
+}
+
+AsmToken ARMBaseAsmLexer::LexTokenUAL() {
+ const AsmToken &lexedToken = lexDefinite();
+
+ switch (lexedToken.getKind()) {
+ default:
+ return AsmToken(lexedToken);
+ case AsmToken::Error:
+ SetError(Lexer->getErrLoc(), Lexer->getErr());
+ return AsmToken(lexedToken);
+ case AsmToken::Identifier:
+ {
+ std::string upperCase = lexedToken.getString().str();
+ std::string lowerCase = LowercaseString(upperCase);
+ StringRef lowerRef(lowerCase);
+
+ unsigned regID = MatchRegisterName(lowerRef);
+
+ if (regID) {
+ return AsmToken(AsmToken::Register,
+ lexedToken.getString(),
+ static_cast<int64_t>(regID));
+ } else {
+ return AsmToken(lexedToken);
+ }
+ }
+ }
+}
+
+extern "C" void LLVMInitializeARMAsmLexer() {
+ RegisterAsmLexer<ARMAsmLexer> X(TheARMTarget);
+ RegisterAsmLexer<ThumbAsmLexer> Y(TheThumbTarget);
+}
+
diff --git a/contrib/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/contrib/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
new file mode 100644
index 0000000..75e2a73
--- /dev/null
+++ b/contrib/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -0,0 +1,872 @@
+//===-- ARMAsmParser.cpp - Parse ARM assembly to MCInst instructions ------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "ARM.h"
+#include "ARMSubtarget.h"
+#include "llvm/MC/MCParser/MCAsmLexer.h"
+#include "llvm/MC/MCParser/MCAsmParser.h"
+#include "llvm/MC/MCParser/MCParsedAsmOperand.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/Target/TargetRegistry.h"
+#include "llvm/Target/TargetAsmParser.h"
+#include "llvm/Support/Compiler.h"
+#include "llvm/Support/SourceMgr.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringSwitch.h"
+#include "llvm/ADT/Twine.h"
+using namespace llvm;
+
+namespace {
+struct ARMOperand;
+
+// The shift types for register controlled shifts in arm memory addressing
+enum ShiftType {
+ Lsl,
+ Lsr,
+ Asr,
+ Ror,
+ Rrx
+};
+
+class ARMAsmParser : public TargetAsmParser {
+ MCAsmParser &Parser;
+ TargetMachine &TM;
+
+private:
+ MCAsmParser &getParser() const { return Parser; }
+
+ MCAsmLexer &getLexer() const { return Parser.getLexer(); }
+
+ void Warning(SMLoc L, const Twine &Msg) { Parser.Warning(L, Msg); }
+
+ bool Error(SMLoc L, const Twine &Msg) { return Parser.Error(L, Msg); }
+
+ bool MaybeParseRegister(OwningPtr<ARMOperand> &Op, bool ParseWriteBack);
+
+ bool ParseRegisterList(OwningPtr<ARMOperand> &Op);
+
+ bool ParseMemory(OwningPtr<ARMOperand> &Op);
+
+ bool ParseMemoryOffsetReg(bool &Negative,
+ bool &OffsetRegShifted,
+ enum ShiftType &ShiftType,
+ const MCExpr *&ShiftAmount,
+ const MCExpr *&Offset,
+ bool &OffsetIsReg,
+ int &OffsetRegNum,
+ SMLoc &E);
+
+ bool ParseShift(enum ShiftType &St, const MCExpr *&ShiftAmount, SMLoc &E);
+
+ bool ParseOperand(OwningPtr<ARMOperand> &Op);
+
+ bool ParseDirectiveWord(unsigned Size, SMLoc L);
+
+ bool ParseDirectiveThumb(SMLoc L);
+
+ bool ParseDirectiveThumbFunc(SMLoc L);
+
+ bool ParseDirectiveCode(SMLoc L);
+
+ bool ParseDirectiveSyntax(SMLoc L);
+
+ bool MatchInstruction(SMLoc IDLoc,
+ const SmallVectorImpl<MCParsedAsmOperand*> &Operands,
+ MCInst &Inst) {
+ if (!MatchInstructionImpl(Operands, Inst))
+ return false;
+
+ // FIXME: We should give nicer diagnostics about the exact failure.
+ Error(IDLoc, "unrecognized instruction");
+
+ return true;
+ }
+
+ /// @name Auto-generated Match Functions
+ /// {
+
+ unsigned ComputeAvailableFeatures(const ARMSubtarget *Subtarget) const;
+
+ bool MatchInstructionImpl(const SmallVectorImpl<MCParsedAsmOperand*>
+ &Operands,
+ MCInst &Inst);
+
+ /// }
+
+
+public:
+ ARMAsmParser(const Target &T, MCAsmParser &_Parser, TargetMachine &_TM)
+ : TargetAsmParser(T), Parser(_Parser), TM(_TM) {}
+
+ virtual bool ParseInstruction(StringRef Name, SMLoc NameLoc,
+ SmallVectorImpl<MCParsedAsmOperand*> &Operands);
+
+ virtual bool ParseDirective(AsmToken DirectiveID);
+};
+
+/// ARMOperand - Instances of this class represent a parsed ARM machine
+/// instruction.
+struct ARMOperand : public MCParsedAsmOperand {
+private:
+ ARMOperand() {}
+public:
+ enum KindTy {
+ CondCode,
+ Immediate,
+ Memory,
+ Register,
+ Token
+ } Kind;
+
+ SMLoc StartLoc, EndLoc;
+
+ union {
+ struct {
+ ARMCC::CondCodes Val;
+ } CC;
+
+ struct {
+ const char *Data;
+ unsigned Length;
+ } Tok;
+
+ struct {
+ unsigned RegNum;
+ bool Writeback;
+ } Reg;
+
+ struct {
+ const MCExpr *Val;
+ } Imm;
+
+ // This is for all forms of ARM address expressions
+ struct {
+ unsigned BaseRegNum;
+ unsigned OffsetRegNum; // used when OffsetIsReg is true
+ const MCExpr *Offset; // used when OffsetIsReg is false
+ const MCExpr *ShiftAmount; // used when OffsetRegShifted is true
+ enum ShiftType ShiftType; // used when OffsetRegShifted is true
+ unsigned
+ OffsetRegShifted : 1, // only used when OffsetIsReg is true
+ Preindexed : 1,
+ Postindexed : 1,
+ OffsetIsReg : 1,
+ Negative : 1, // only used when OffsetIsReg is true
+ Writeback : 1;
+ } Mem;
+
+ };
+
+ //ARMOperand(KindTy K, SMLoc S, SMLoc E)
+ // : Kind(K), StartLoc(S), EndLoc(E) {}
+
+ ARMOperand(const ARMOperand &o) : MCParsedAsmOperand() {
+ Kind = o.Kind;
+ StartLoc = o.StartLoc;
+ EndLoc = o.EndLoc;
+ switch (Kind) {
+ case CondCode:
+ CC = o.CC;
+ break;
+ case Token:
+ Tok = o.Tok;
+ break;
+ case Register:
+ Reg = o.Reg;
+ break;
+ case Immediate:
+ Imm = o.Imm;
+ break;
+ case Memory:
+ Mem = o.Mem;
+ break;
+ }
+ }
+
+ /// getStartLoc - Get the location of the first token of this operand.
+ SMLoc getStartLoc() const { return StartLoc; }
+ /// getEndLoc - Get the location of the last token of this operand.
+ SMLoc getEndLoc() const { return EndLoc; }
+
+ ARMCC::CondCodes getCondCode() const {
+ assert(Kind == CondCode && "Invalid access!");
+ return CC.Val;
+ }
+
+ StringRef getToken() const {
+ assert(Kind == Token && "Invalid access!");
+ return StringRef(Tok.Data, Tok.Length);
+ }
+
+ unsigned getReg() const {
+ assert(Kind == Register && "Invalid access!");
+ return Reg.RegNum;
+ }
+
+ const MCExpr *getImm() const {
+ assert(Kind == Immediate && "Invalid access!");
+ return Imm.Val;
+ }
+
+ bool isCondCode() const { return Kind == CondCode; }
+
+ bool isImm() const { return Kind == Immediate; }
+
+ bool isReg() const { return Kind == Register; }
+
+ bool isToken() const {return Kind == Token; }
+
+ void addExpr(MCInst &Inst, const MCExpr *Expr) const {
+ // Add as immediates when possible.
+ if (const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(Expr))
+ Inst.addOperand(MCOperand::CreateImm(CE->getValue()));
+ else
+ Inst.addOperand(MCOperand::CreateExpr(Expr));
+ }
+
+ void addCondCodeOperands(MCInst &Inst, unsigned N) const {
+ assert(N == 2 && "Invalid number of operands!");
+ Inst.addOperand(MCOperand::CreateImm(unsigned(getCondCode())));
+ // FIXME: What belongs here?
+ Inst.addOperand(MCOperand::CreateReg(0));
+ }
+
+ void addRegOperands(MCInst &Inst, unsigned N) const {
+ assert(N == 1 && "Invalid number of operands!");
+ Inst.addOperand(MCOperand::CreateReg(getReg()));
+ }
+
+ void addImmOperands(MCInst &Inst, unsigned N) const {
+ assert(N == 1 && "Invalid number of operands!");
+ addExpr(Inst, getImm());
+ }
+
+ virtual void dump(raw_ostream &OS) const;
+
+ static void CreateCondCode(OwningPtr<ARMOperand> &Op, ARMCC::CondCodes CC,
+ SMLoc S) {
+ Op.reset(new ARMOperand);
+ Op->Kind = CondCode;
+ Op->CC.Val = CC;
+ Op->StartLoc = S;
+ Op->EndLoc = S;
+ }
+
+ static void CreateToken(OwningPtr<ARMOperand> &Op, StringRef Str,
+ SMLoc S) {
+ Op.reset(new ARMOperand);
+ Op->Kind = Token;
+ Op->Tok.Data = Str.data();
+ Op->Tok.Length = Str.size();
+ Op->StartLoc = S;
+ Op->EndLoc = S;
+ }
+
+ static void CreateReg(OwningPtr<ARMOperand> &Op, unsigned RegNum,
+ bool Writeback, SMLoc S, SMLoc E) {
+ Op.reset(new ARMOperand);
+ Op->Kind = Register;
+ Op->Reg.RegNum = RegNum;
+ Op->Reg.Writeback = Writeback;
+
+ Op->StartLoc = S;
+ Op->EndLoc = E;
+ }
+
+ static void CreateImm(OwningPtr<ARMOperand> &Op, const MCExpr *Val,
+ SMLoc S, SMLoc E) {
+ Op.reset(new ARMOperand);
+ Op->Kind = Immediate;
+ Op->Imm.Val = Val;
+
+ Op->StartLoc = S;
+ Op->EndLoc = E;
+ }
+
+ static void CreateMem(OwningPtr<ARMOperand> &Op,
+ unsigned BaseRegNum, bool OffsetIsReg,
+ const MCExpr *Offset, unsigned OffsetRegNum,
+ bool OffsetRegShifted, enum ShiftType ShiftType,
+ const MCExpr *ShiftAmount, bool Preindexed,
+ bool Postindexed, bool Negative, bool Writeback,
+ SMLoc S, SMLoc E) {
+ Op.reset(new ARMOperand);
+ Op->Kind = Memory;
+ Op->Mem.BaseRegNum = BaseRegNum;
+ Op->Mem.OffsetIsReg = OffsetIsReg;
+ Op->Mem.Offset = Offset;
+ Op->Mem.OffsetRegNum = OffsetRegNum;
+ Op->Mem.OffsetRegShifted = OffsetRegShifted;
+ Op->Mem.ShiftType = ShiftType;
+ Op->Mem.ShiftAmount = ShiftAmount;
+ Op->Mem.Preindexed = Preindexed;
+ Op->Mem.Postindexed = Postindexed;
+ Op->Mem.Negative = Negative;
+ Op->Mem.Writeback = Writeback;
+
+ Op->StartLoc = S;
+ Op->EndLoc = E;
+ }
+};
+
+} // end anonymous namespace.
+
+void ARMOperand::dump(raw_ostream &OS) const {
+ switch (Kind) {
+ case CondCode:
+ OS << ARMCondCodeToString(getCondCode());
+ break;
+ case Immediate:
+ getImm()->print(OS);
+ break;
+ case Memory:
+ OS << "<memory>";
+ break;
+ case Register:
+ OS << "<register " << getReg() << ">";
+ break;
+ case Token:
+ OS << "'" << getToken() << "'";
+ break;
+ }
+}
+
+/// @name Auto-generated Match Functions
+/// {
+
+static unsigned MatchRegisterName(StringRef Name);
+
+/// }
+
+/// Try to parse a register name. The token must be an Identifier when called,
+/// and if it is a register name a Reg operand is created, the token is eaten
+/// and false is returned. Else true is returned and no token is eaten.
+/// TODO this is likely to change to allow different register types and or to
+/// parse for a specific register type.
+bool ARMAsmParser::MaybeParseRegister
+ (OwningPtr<ARMOperand> &Op, bool ParseWriteBack) {
+ SMLoc S, E;
+ const AsmToken &Tok = Parser.getTok();
+ assert(Tok.is(AsmToken::Identifier) && "Token is not an Identifier");
+
+ // FIXME: Validate register for the current architecture; we have to do
+ // validation later, so maybe there is no need for this here.
+ int RegNum;
+
+ RegNum = MatchRegisterName(Tok.getString());
+ if (RegNum == -1)
+ return true;
+
+ S = Tok.getLoc();
+
+ Parser.Lex(); // Eat identifier token.
+
+ E = Parser.getTok().getLoc();
+
+ bool Writeback = false;
+ if (ParseWriteBack) {
+ const AsmToken &ExclaimTok = Parser.getTok();
+ if (ExclaimTok.is(AsmToken::Exclaim)) {
+ E = ExclaimTok.getLoc();
+ Writeback = true;
+ Parser.Lex(); // Eat exclaim token
+ }
+ }
+
+ ARMOperand::CreateReg(Op, RegNum, Writeback, S, E);
+
+ return false;
+}
+
+/// Parse a register list, return false if successful else return true or an
+/// error. The first token must be a '{' when called.
+bool ARMAsmParser::ParseRegisterList(OwningPtr<ARMOperand> &Op) {
+ SMLoc S, E;
+ assert(Parser.getTok().is(AsmToken::LCurly) &&
+ "Token is not an Left Curly Brace");
+ S = Parser.getTok().getLoc();
+ Parser.Lex(); // Eat left curly brace token.
+
+ const AsmToken &RegTok = Parser.getTok();
+ SMLoc RegLoc = RegTok.getLoc();
+ if (RegTok.isNot(AsmToken::Identifier))
+ return Error(RegLoc, "register expected");
+ int RegNum = MatchRegisterName(RegTok.getString());
+ if (RegNum == -1)
+ return Error(RegLoc, "register expected");
+ Parser.Lex(); // Eat identifier token.
+ unsigned RegList = 1 << RegNum;
+
+ int HighRegNum = RegNum;
+ // TODO ranges like "{Rn-Rm}"
+ while (Parser.getTok().is(AsmToken::Comma)) {
+ Parser.Lex(); // Eat comma token.
+
+ const AsmToken &RegTok = Parser.getTok();
+ SMLoc RegLoc = RegTok.getLoc();
+ if (RegTok.isNot(AsmToken::Identifier))
+ return Error(RegLoc, "register expected");
+ int RegNum = MatchRegisterName(RegTok.getString());
+ if (RegNum == -1)
+ return Error(RegLoc, "register expected");
+
+ if (RegList & (1 << RegNum))
+ Warning(RegLoc, "register duplicated in register list");
+ else if (RegNum <= HighRegNum)
+ Warning(RegLoc, "register not in ascending order in register list");
+ RegList |= 1 << RegNum;
+ HighRegNum = RegNum;
+
+ Parser.Lex(); // Eat identifier token.
+ }
+ const AsmToken &RCurlyTok = Parser.getTok();
+ if (RCurlyTok.isNot(AsmToken::RCurly))
+ return Error(RCurlyTok.getLoc(), "'}' expected");
+ E = RCurlyTok.getLoc();
+ Parser.Lex(); // Eat left curly brace token.
+
+ return false;
+}
+
+/// Parse an arm memory expression, return false if successful else return true
+/// or an error. The first token must be a '[' when called.
+/// TODO Only preindexing and postindexing addressing are started, unindexed
+/// with option, etc are still to do.
+bool ARMAsmParser::ParseMemory(OwningPtr<ARMOperand> &Op) {
+ SMLoc S, E;
+ assert(Parser.getTok().is(AsmToken::LBrac) &&
+ "Token is not an Left Bracket");
+ S = Parser.getTok().getLoc();
+ Parser.Lex(); // Eat left bracket token.
+
+ const AsmToken &BaseRegTok = Parser.getTok();
+ if (BaseRegTok.isNot(AsmToken::Identifier))
+ return Error(BaseRegTok.getLoc(), "register expected");
+ if (MaybeParseRegister(Op, false))
+ return Error(BaseRegTok.getLoc(), "register expected");
+ int BaseRegNum = Op->getReg();
+
+ bool Preindexed = false;
+ bool Postindexed = false;
+ bool OffsetIsReg = false;
+ bool Negative = false;
+ bool Writeback = false;
+
+ // First look for preindexed address forms, that is after the "[Rn" we now
+ // have to see if the next token is a comma.
+ const AsmToken &Tok = Parser.getTok();
+ if (Tok.is(AsmToken::Comma)) {
+ Preindexed = true;
+ Parser.Lex(); // Eat comma token.
+ int OffsetRegNum;
+ bool OffsetRegShifted;
+ enum ShiftType ShiftType;
+ const MCExpr *ShiftAmount;
+ const MCExpr *Offset;
+ if(ParseMemoryOffsetReg(Negative, OffsetRegShifted, ShiftType, ShiftAmount,
+ Offset, OffsetIsReg, OffsetRegNum, E))
+ return true;
+ const AsmToken &RBracTok = Parser.getTok();
+ if (RBracTok.isNot(AsmToken::RBrac))
+ return Error(RBracTok.getLoc(), "']' expected");
+ E = RBracTok.getLoc();
+ Parser.Lex(); // Eat right bracket token.
+
+ const AsmToken &ExclaimTok = Parser.getTok();
+ if (ExclaimTok.is(AsmToken::Exclaim)) {
+ E = ExclaimTok.getLoc();
+ Writeback = true;
+ Parser.Lex(); // Eat exclaim token
+ }
+ ARMOperand::CreateMem(Op, BaseRegNum, OffsetIsReg, Offset, OffsetRegNum,
+ OffsetRegShifted, ShiftType, ShiftAmount,
+ Preindexed, Postindexed, Negative, Writeback, S, E);
+ return false;
+ }
+ // The "[Rn" we have so far was not followed by a comma.
+ else if (Tok.is(AsmToken::RBrac)) {
+ // This is a post indexing addressing forms, that is a ']' follows after
+ // the "[Rn".
+ Postindexed = true;
+ Writeback = true;
+ E = Tok.getLoc();
+ Parser.Lex(); // Eat right bracket token.
+
+ int OffsetRegNum = 0;
+ bool OffsetRegShifted = false;
+ enum ShiftType ShiftType;
+ const MCExpr *ShiftAmount;
+ const MCExpr *Offset;
+
+ const AsmToken &NextTok = Parser.getTok();
+ if (NextTok.isNot(AsmToken::EndOfStatement)) {
+ if (NextTok.isNot(AsmToken::Comma))
+ return Error(NextTok.getLoc(), "',' expected");
+ Parser.Lex(); // Eat comma token.
+ if(ParseMemoryOffsetReg(Negative, OffsetRegShifted, ShiftType,
+ ShiftAmount, Offset, OffsetIsReg, OffsetRegNum,
+ E))
+ return true;
+ }
+
+ ARMOperand::CreateMem(Op, BaseRegNum, OffsetIsReg, Offset, OffsetRegNum,
+ OffsetRegShifted, ShiftType, ShiftAmount,
+ Preindexed, Postindexed, Negative, Writeback, S, E);
+ return false;
+ }
+
+ return true;
+}
+
+/// Parse the offset of a memory operand after we have seen "[Rn," or "[Rn],"
+/// we will parse the following (were +/- means that a plus or minus is
+/// optional):
+/// +/-Rm
+/// +/-Rm, shift
+/// #offset
+/// we return false on success or an error otherwise.
+bool ARMAsmParser::ParseMemoryOffsetReg(bool &Negative,
+ bool &OffsetRegShifted,
+ enum ShiftType &ShiftType,
+ const MCExpr *&ShiftAmount,
+ const MCExpr *&Offset,
+ bool &OffsetIsReg,
+ int &OffsetRegNum,
+ SMLoc &E) {
+ OwningPtr<ARMOperand> Op;
+ Negative = false;
+ OffsetRegShifted = false;
+ OffsetIsReg = false;
+ OffsetRegNum = -1;
+ const AsmToken &NextTok = Parser.getTok();
+ E = NextTok.getLoc();
+ if (NextTok.is(AsmToken::Plus))
+ Parser.Lex(); // Eat plus token.
+ else if (NextTok.is(AsmToken::Minus)) {
+ Negative = true;
+ Parser.Lex(); // Eat minus token
+ }
+ // See if there is a register following the "[Rn," or "[Rn]," we have so far.
+ const AsmToken &OffsetRegTok = Parser.getTok();
+ if (OffsetRegTok.is(AsmToken::Identifier)) {
+ OffsetIsReg = !MaybeParseRegister(Op, false);
+ if (OffsetIsReg) {
+ E = Op->getEndLoc();
+ OffsetRegNum = Op->getReg();
+ }
+ }
+ // If we parsed a register as the offset then their can be a shift after that
+ if (OffsetRegNum != -1) {
+ // Look for a comma then a shift
+ const AsmToken &Tok = Parser.getTok();
+ if (Tok.is(AsmToken::Comma)) {
+ Parser.Lex(); // Eat comma token.
+
+ const AsmToken &Tok = Parser.getTok();
+ if (ParseShift(ShiftType, ShiftAmount, E))
+ return Error(Tok.getLoc(), "shift expected");
+ OffsetRegShifted = true;
+ }
+ }
+ else { // the "[Rn," or "[Rn,]" we have so far was not followed by "Rm"
+ // Look for #offset following the "[Rn," or "[Rn],"
+ const AsmToken &HashTok = Parser.getTok();
+ if (HashTok.isNot(AsmToken::Hash))
+ return Error(HashTok.getLoc(), "'#' expected");
+
+ Parser.Lex(); // Eat hash token.
+
+ if (getParser().ParseExpression(Offset))
+ return true;
+ E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
+ }
+ return false;
+}
+
+/// ParseShift as one of these two:
+/// ( lsl | lsr | asr | ror ) , # shift_amount
+/// rrx
+/// and returns true if it parses a shift otherwise it returns false.
+bool ARMAsmParser::ParseShift(ShiftType &St,
+ const MCExpr *&ShiftAmount,
+ SMLoc &E) {
+ const AsmToken &Tok = Parser.getTok();
+ if (Tok.isNot(AsmToken::Identifier))
+ return true;
+ StringRef ShiftName = Tok.getString();
+ if (ShiftName == "lsl" || ShiftName == "LSL")
+ St = Lsl;
+ else if (ShiftName == "lsr" || ShiftName == "LSR")
+ St = Lsr;
+ else if (ShiftName == "asr" || ShiftName == "ASR")
+ St = Asr;
+ else if (ShiftName == "ror" || ShiftName == "ROR")
+ St = Ror;
+ else if (ShiftName == "rrx" || ShiftName == "RRX")
+ St = Rrx;
+ else
+ return true;
+ Parser.Lex(); // Eat shift type token.
+
+ // Rrx stands alone.
+ if (St == Rrx)
+ return false;
+
+ // Otherwise, there must be a '#' and a shift amount.
+ const AsmToken &HashTok = Parser.getTok();
+ if (HashTok.isNot(AsmToken::Hash))
+ return Error(HashTok.getLoc(), "'#' expected");
+ Parser.Lex(); // Eat hash token.
+
+ if (getParser().ParseExpression(ShiftAmount))
+ return true;
+
+ return false;
+}
+
+/// Parse a arm instruction operand. For now this parses the operand regardless
+/// of the mnemonic.
+bool ARMAsmParser::ParseOperand(OwningPtr<ARMOperand> &Op) {
+ SMLoc S, E;
+
+ switch (getLexer().getKind()) {
+ case AsmToken::Identifier:
+ if (!MaybeParseRegister(Op, true))
+ return false;
+ // This was not a register so parse other operands that start with an
+ // identifier (like labels) as expressions and create them as immediates.
+ const MCExpr *IdVal;
+ S = Parser.getTok().getLoc();
+ if (getParser().ParseExpression(IdVal))
+ return true;
+ E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
+ ARMOperand::CreateImm(Op, IdVal, S, E);
+ return false;
+ case AsmToken::LBrac:
+ return ParseMemory(Op);
+ case AsmToken::LCurly:
+ return ParseRegisterList(Op);
+ case AsmToken::Hash:
+ // #42 -> immediate.
+ // TODO: ":lower16:" and ":upper16:" modifiers after # before immediate
+ S = Parser.getTok().getLoc();
+ Parser.Lex();
+ const MCExpr *ImmVal;
+ if (getParser().ParseExpression(ImmVal))
+ return true;
+ E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
+ ARMOperand::CreateImm(Op, ImmVal, S, E);
+ return false;
+ default:
+ return Error(Parser.getTok().getLoc(), "unexpected token in operand");
+ }
+}
+
+/// Parse an arm instruction mnemonic followed by its operands.
+bool ARMAsmParser::ParseInstruction(StringRef Name, SMLoc NameLoc,
+ SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
+ OwningPtr<ARMOperand> Op;
+
+ // Create the leading tokens for the mnemonic, split by '.' characters.
+ size_t Start = 0, Next = Name.find('.');
+ StringRef Head = Name.slice(Start, Next);
+
+ // Determine the predicate, if any.
+ //
+ // FIXME: We need a way to check whether a prefix supports predication,
+ // otherwise we will end up with an ambiguity for instructions that happen to
+ // end with a predicate name.
+ unsigned CC = StringSwitch<unsigned>(Head.substr(Head.size()-2))
+ .Case("eq", ARMCC::EQ)
+ .Case("ne", ARMCC::NE)
+ .Case("hs", ARMCC::HS)
+ .Case("lo", ARMCC::LO)
+ .Case("mi", ARMCC::MI)
+ .Case("pl", ARMCC::PL)
+ .Case("vs", ARMCC::VS)
+ .Case("vc", ARMCC::VC)
+ .Case("hi", ARMCC::HI)
+ .Case("ls", ARMCC::LS)
+ .Case("ge", ARMCC::GE)
+ .Case("lt", ARMCC::LT)
+ .Case("gt", ARMCC::GT)
+ .Case("le", ARMCC::LE)
+ .Case("al", ARMCC::AL)
+ .Default(~0U);
+ if (CC != ~0U) {
+ Head = Head.slice(0, Head.size() - 2);
+ } else
+ CC = ARMCC::AL;
+
+ ARMOperand::CreateToken(Op, Head, NameLoc);
+ Operands.push_back(Op.take());
+
+ ARMOperand::CreateCondCode(Op, ARMCC::CondCodes(CC), NameLoc);
+ Operands.push_back(Op.take());
+
+ // Add the remaining tokens in the mnemonic.
+ while (Next != StringRef::npos) {
+ Start = Next;
+ Next = Name.find('.', Start + 1);
+ Head = Name.slice(Start, Next);
+
+ ARMOperand::CreateToken(Op, Head, NameLoc);
+ Operands.push_back(Op.take());
+ }
+
+ // Read the remaining operands.
+ if (getLexer().isNot(AsmToken::EndOfStatement)) {
+ // Read the first operand.
+ OwningPtr<ARMOperand> Op;
+ if (ParseOperand(Op)) return true;
+ Operands.push_back(Op.take());
+
+ while (getLexer().is(AsmToken::Comma)) {
+ Parser.Lex(); // Eat the comma.
+
+ // Parse and remember the operand.
+ if (ParseOperand(Op)) return true;
+ Operands.push_back(Op.take());
+ }
+ }
+ return false;
+}
+
+/// ParseDirective parses the arm specific directives
+bool ARMAsmParser::ParseDirective(AsmToken DirectiveID) {
+ StringRef IDVal = DirectiveID.getIdentifier();
+ if (IDVal == ".word")
+ return ParseDirectiveWord(4, DirectiveID.getLoc());
+ else if (IDVal == ".thumb")
+ return ParseDirectiveThumb(DirectiveID.getLoc());
+ else if (IDVal == ".thumb_func")
+ return ParseDirectiveThumbFunc(DirectiveID.getLoc());
+ else if (IDVal == ".code")
+ return ParseDirectiveCode(DirectiveID.getLoc());
+ else if (IDVal == ".syntax")
+ return ParseDirectiveSyntax(DirectiveID.getLoc());
+ return true;
+}
+
+/// ParseDirectiveWord
+/// ::= .word [ expression (, expression)* ]
+bool ARMAsmParser::ParseDirectiveWord(unsigned Size, SMLoc L) {
+ if (getLexer().isNot(AsmToken::EndOfStatement)) {
+ for (;;) {
+ const MCExpr *Value;
+ if (getParser().ParseExpression(Value))
+ return true;
+
+ getParser().getStreamer().EmitValue(Value, Size, 0/*addrspace*/);
+
+ if (getLexer().is(AsmToken::EndOfStatement))
+ break;
+
+ // FIXME: Improve diagnostic.
+ if (getLexer().isNot(AsmToken::Comma))
+ return Error(L, "unexpected token in directive");
+ Parser.Lex();
+ }
+ }
+
+ Parser.Lex();
+ return false;
+}
+
+/// ParseDirectiveThumb
+/// ::= .thumb
+bool ARMAsmParser::ParseDirectiveThumb(SMLoc L) {
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return Error(L, "unexpected token in directive");
+ Parser.Lex();
+
+ // TODO: set thumb mode
+ // TODO: tell the MC streamer the mode
+ // getParser().getStreamer().Emit???();
+ return false;
+}
+
+/// ParseDirectiveThumbFunc
+/// ::= .thumbfunc symbol_name
+bool ARMAsmParser::ParseDirectiveThumbFunc(SMLoc L) {
+ const AsmToken &Tok = Parser.getTok();
+ if (Tok.isNot(AsmToken::Identifier) && Tok.isNot(AsmToken::String))
+ return Error(L, "unexpected token in .syntax directive");
+ StringRef ATTRIBUTE_UNUSED SymbolName = Parser.getTok().getIdentifier();
+ Parser.Lex(); // Consume the identifier token.
+
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return Error(L, "unexpected token in directive");
+ Parser.Lex();
+
+ // TODO: mark symbol as a thumb symbol
+ // getParser().getStreamer().Emit???();
+ return false;
+}
+
+/// ParseDirectiveSyntax
+/// ::= .syntax unified | divided
+bool ARMAsmParser::ParseDirectiveSyntax(SMLoc L) {
+ const AsmToken &Tok = Parser.getTok();
+ if (Tok.isNot(AsmToken::Identifier))
+ return Error(L, "unexpected token in .syntax directive");
+ StringRef Mode = Tok.getString();
+ if (Mode == "unified" || Mode == "UNIFIED")
+ Parser.Lex();
+ else if (Mode == "divided" || Mode == "DIVIDED")
+ Parser.Lex();
+ else
+ return Error(L, "unrecognized syntax mode in .syntax directive");
+
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return Error(Parser.getTok().getLoc(), "unexpected token in directive");
+ Parser.Lex();
+
+ // TODO tell the MC streamer the mode
+ // getParser().getStreamer().Emit???();
+ return false;
+}
+
+/// ParseDirectiveCode
+/// ::= .code 16 | 32
+bool ARMAsmParser::ParseDirectiveCode(SMLoc L) {
+ const AsmToken &Tok = Parser.getTok();
+ if (Tok.isNot(AsmToken::Integer))
+ return Error(L, "unexpected token in .code directive");
+ int64_t Val = Parser.getTok().getIntVal();
+ if (Val == 16)
+ Parser.Lex();
+ else if (Val == 32)
+ Parser.Lex();
+ else
+ return Error(L, "invalid operand to .code directive");
+
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return Error(Parser.getTok().getLoc(), "unexpected token in directive");
+ Parser.Lex();
+
+ // TODO tell the MC streamer the mode
+ // getParser().getStreamer().Emit???();
+ return false;
+}
+
+extern "C" void LLVMInitializeARMAsmLexer();
+
+/// Force static initialization.
+extern "C" void LLVMInitializeARMAsmParser() {
+ RegisterAsmParser<ARMAsmParser> X(TheARMTarget);
+ RegisterAsmParser<ARMAsmParser> Y(TheThumbTarget);
+ LLVMInitializeARMAsmLexer();
+}
+
+#include "ARMGenAsmMatcher.inc"
diff --git a/contrib/llvm/lib/Target/ARM/AsmParser/CMakeLists.txt b/contrib/llvm/lib/Target/ARM/AsmParser/CMakeLists.txt
new file mode 100644
index 0000000..9ba7c01
--- /dev/null
+++ b/contrib/llvm/lib/Target/ARM/AsmParser/CMakeLists.txt
@@ -0,0 +1,7 @@
+include_directories( ${CMAKE_CURRENT_BINARY_DIR}/.. ${CMAKE_CURRENT_SOURCE_DIR}/.. )
+
+add_llvm_library(LLVMARMAsmParser
+ ARMAsmLexer.cpp
+ ARMAsmParser.cpp
+ )
+
diff --git a/contrib/llvm/lib/Target/ARM/AsmParser/Makefile b/contrib/llvm/lib/Target/ARM/AsmParser/Makefile
new file mode 100644
index 0000000..841516f
--- /dev/null
+++ b/contrib/llvm/lib/Target/ARM/AsmParser/Makefile
@@ -0,0 +1,15 @@
+##===- lib/Target/ARM/AsmParser/Makefile -------------------*- Makefile -*-===##
+#
+# The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+LEVEL = ../../../..
+LIBRARYNAME = LLVMARMAsmParser
+
+# Hack: we need to include 'main' ARM target directory to grab private headers
+CPP.Flags += -I$(PROJ_OBJ_DIR)/.. -I$(PROJ_SRC_DIR)/..
+
+include $(LEVEL)/Makefile.common
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