#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/raw_ostream.h"
+#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Target/TargetAsmParser.h"
+#include <cctype>
#include <vector>
using namespace llvm;
/// will be either the EndOfStatement or EOF.
StringRef ParseStringToEndOfStatement();
- bool ParseAssignment(StringRef Name);
+ bool ParseAssignment(StringRef Name, bool allow_redef);
bool ParsePrimaryExpr(const MCExpr *&Res, SMLoc &EndLoc);
bool ParseBinOpRHS(unsigned Precedence, const MCExpr *&Res, SMLoc &EndLoc);
bool ParseIdentifier(StringRef &Res);
// Directive Parsing.
- bool ParseDirectiveAscii(bool ZeroTerminated); // ".ascii", ".asciiz"
+
+ // ".ascii", ".asciiz", ".string"
+ bool ParseDirectiveAscii(StringRef IDVal, bool ZeroTerminated);
bool ParseDirectiveValue(unsigned Size); // ".byte", ".long", ...
bool ParseDirectiveRealValue(const fltSemantics &); // ".single", ...
bool ParseDirectiveFill(); // ".fill"
bool ParseDirectiveSpace(); // ".space"
bool ParseDirectiveZero(); // ".zero"
- bool ParseDirectiveSet(StringRef IDVal); // ".set" or ".equ"
+ bool ParseDirectiveSet(StringRef IDVal, bool allow_redef); // ".set", ".equ", ".equiv"
bool ParseDirectiveOrg(); // ".org"
// ".align{,32}", ".p2align{,w,l}"
bool ParseDirectiveAlign(bool IsPow2, unsigned ValueSize);
/// ParseDirectiveSymbolAttribute - Parse a directive like ".globl" which
/// accepts a single symbol (which should be a label or an external).
bool ParseDirectiveSymbolAttribute(MCSymbolAttr Attr);
- bool ParseDirectiveELFType(); // ELF specific ".type"
bool ParseDirectiveComm(bool IsLocal); // ".comm" and ".lcomm"
bool ParseDirectiveInclude(); // ".include"
bool ParseDirectiveIf(SMLoc DirectiveLoc); // ".if"
+ // ".ifdef" or ".ifndef", depending on expect_defined
+ bool ParseDirectiveIfdef(SMLoc DirectiveLoc, bool expect_defined);
bool ParseDirectiveElseIf(SMLoc DirectiveLoc); // ".elseif"
bool ParseDirectiveElse(SMLoc DirectiveLoc); // ".else"
bool ParseDirectiveEndIf(SMLoc DirectiveLoc); // .endif
getParser().AddDirectiveHandler(this, Directive,
HandleDirective<GenericAsmParser, Handler>);
}
-
public:
GenericAsmParser() {}
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveLoc>(".loc");
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveStabs>(".stabs");
+ // CFI directives.
+ 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::ParseDirectiveCFIDefCfaRegister>(
+ ".cfi_def_cfa_register");
+ AddDirectiveHandler<&GenericAsmParser::ParseDirectiveCFIOffset>(
+ ".cfi_offset");
+ AddDirectiveHandler<
+ &GenericAsmParser::ParseDirectiveCFIPersonalityOrLsda>(".cfi_personality");
+ AddDirectiveHandler<
+ &GenericAsmParser::ParseDirectiveCFIPersonalityOrLsda>(".cfi_lsda");
+ AddDirectiveHandler<
+ &GenericAsmParser::ParseDirectiveCFIRememberState>(".cfi_remember_state");
+ AddDirectiveHandler<
+ &GenericAsmParser::ParseDirectiveCFIRestoreState>(".cfi_restore_state");
+
// Macro directives.
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveMacrosOnOff>(
".macros_on");
AddDirectiveHandler<&GenericAsmParser::ParseDirectiveLEB128>(".uleb128");
}
+ bool ParseRegisterOrRegisterNumber(int64_t &Register, SMLoc DirectiveLoc);
+
bool ParseDirectiveFile(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveLine(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveLoc(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveStabs(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIStartProc(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIEndProc(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIDefCfa(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIDefCfaOffset(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIDefCfaRegister(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIOffset(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIPersonalityOrLsda(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIRememberState(StringRef, SMLoc DirectiveLoc);
+ bool ParseDirectiveCFIRestoreState(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveMacrosOnOff(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveMacro(StringRef, SMLoc DirectiveLoc);
bool ParseDirectiveEndMacro(StringRef, SMLoc DirectiveLoc);
- void ParseUleb128(uint64_t Value);
- void ParseSleb128(int64_t Value);
bool ParseDirectiveLEB128(StringRef, SMLoc);
};
std::pair<StringRef, StringRef> Split = Identifier.split('@');
MCSymbol *Sym = getContext().GetOrCreateSymbol(Split.first);
- // Mark the symbol as used in an expression.
- Sym->setUsedInExpr(true);
-
// Lookup the symbol variant if used.
MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
if (Split.first.size() != Identifier.size()) {
Variant = MCSymbolRefExpr::getVariantKindForName(Split.second);
if (Variant == MCSymbolRefExpr::VK_Invalid) {
Variant = MCSymbolRefExpr::VK_None;
- TokError("invalid variant '" + Split.second + "'");
+ return TokError("invalid variant '" + Split.second + "'");
}
}
// semantics in the face of reassignment.
if (Sym->isVariable() && isa<MCConstantExpr>(Sym->getVariableValue())) {
if (Variant)
- return Error(EndLoc, "unexpected modified on variable reference");
+ return Error(EndLoc, "unexpected modifier on variable reference");
Res = Sym->getVariableValue();
return false;
}
return false;
}
+ case AsmToken::Real: {
+ APFloat RealVal(APFloat::IEEEdouble, getTok().getString());
+ uint64_t IntVal = RealVal.bitcastToAPInt().getZExtValue();
+ Res = MCConstantExpr::Create(IntVal, getContext());
+ Lex(); // Eat token.
+ return false;
+ }
case AsmToken::Dot: {
// This is a '.' reference, which references the current PC. Emit a
// temporary label to the streamer and refer to it.
Lex(); // Eat identifier.
return false;
}
-
case AsmToken::LParen:
Lex(); // Eat the '('.
return ParseParenExpr(Res, EndLoc);
return false;
}
- // Statements always start with an identifier.
+ // Statements always start with an identifier or are a full line comment.
AsmToken ID = getTok();
SMLoc IDLoc = ID.getLoc();
StringRef IDVal;
int64_t LocalLabelVal = -1;
- // GUESS allow an integer followed by a ':' as a directional local label
+ // A full line comment is a '#' as the first token.
+ if (Lexer.is(AsmToken::Hash)) {
+ EatToEndOfStatement();
+ return false;
+ }
+ // Allow an integer followed by a ':' as a directional local label.
if (Lexer.is(AsmToken::Integer)) {
LocalLabelVal = getTok().getIntVal();
if (LocalLabelVal < 0) {
// example.
if (IDVal == ".if")
return ParseDirectiveIf(IDLoc);
+ 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")
// identifier '=' ... -> assignment statement
Lex();
- return ParseAssignment(IDVal);
+ return ParseAssignment(IDVal, true);
default: // Normal instruction or directive.
break;
if (IDVal[0] == '.') {
// Assembler features
if (IDVal == ".set" || IDVal == ".equ")
- return ParseDirectiveSet(IDVal);
+ return ParseDirectiveSet(IDVal, true);
+ if (IDVal == ".equiv")
+ return ParseDirectiveSet(IDVal, false);
// Data directives
if (IDVal == ".ascii")
- return ParseDirectiveAscii(false);
- if (IDVal == ".asciz")
- return ParseDirectiveAscii(true);
+ 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 == ".single")
+ if (IDVal == ".8byte")
+ return ParseDirectiveValue(8);
+ if (IDVal == ".single" || IDVal == ".float")
return ParseDirectiveRealValue(APFloat::IEEEsingle);
if (IDVal == ".double")
return ParseDirectiveRealValue(APFloat::IEEEdouble);
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 == ".protected")
if (IDVal == ".include")
return ParseDirectiveInclude();
+ if (IDVal == ".code16" || IDVal == ".code32" || IDVal == ".code64")
+ return TokError(Twine(IDVal) + " not supported yet");
+
// Look up the handler in the handler table.
std::pair<MCAsmParserExtension*, DirectiveHandler> Handler =
DirectiveMap.lookup(IDVal);
ActiveMacros.pop_back();
}
-bool AsmParser::ParseAssignment(StringRef Name) {
+static void MarkUsed(const MCExpr *Value) {
+ switch (Value->getKind()) {
+ case MCExpr::Binary:
+ MarkUsed(static_cast<const MCBinaryExpr*>(Value)->getLHS());
+ MarkUsed(static_cast<const MCBinaryExpr*>(Value)->getRHS());
+ break;
+ case MCExpr::Target:
+ case MCExpr::Constant:
+ break;
+ case MCExpr::SymbolRef: {
+ static_cast<const MCSymbolRefExpr*>(Value)->getSymbol().setUsed(true);
+ break;
+ }
+ case MCExpr::Unary:
+ MarkUsed(static_cast<const MCUnaryExpr*>(Value)->getSubExpr());
+ break;
+ }
+}
+
+bool AsmParser::ParseAssignment(StringRef Name, bool allow_redef) {
// FIXME: Use better location, we should use proper tokens.
SMLoc EqualLoc = Lexer.getLoc();
if (ParseExpression(Value))
return true;
+ MarkUsed(Value);
+
if (Lexer.isNot(AsmToken::EndOfStatement))
return TokError("unexpected token in assignment");
//
// FIXME: Diagnostics. Note the location of the definition as a label.
// FIXME: Diagnose assignment to protected identifier (e.g., register name).
- if (Sym->isUndefined() && !Sym->isUsedInExpr())
+ if (Sym->isUndefined() && !Sym->isUsed() && !Sym->isVariable())
; // Allow redefinitions of undefined symbols only used in directives.
- else if (!Sym->isUndefined() && !Sym->isAbsolute())
+ else if (!Sym->isUndefined() && (!Sym->isAbsolute() || !allow_redef))
return Error(EqualLoc, "redefinition of '" + Name + "'");
else if (!Sym->isVariable())
return Error(EqualLoc, "invalid assignment to '" + Name + "'");
else if (!isa<MCConstantExpr>(Sym->getVariableValue()))
return Error(EqualLoc, "invalid reassignment of non-absolute variable '" +
Name + "'");
+
+ // Don't count these checks as uses.
+ Sym->setUsed(false);
} else
Sym = getContext().GetOrCreateSymbol(Name);
// FIXME: Handle '.'.
- Sym->setUsedInExpr(true);
-
// Do the assignment.
Out.EmitAssignment(Sym, Value);
}
/// ParseDirectiveSet:
+/// ::= .equ identifier ',' expression
+/// ::= .equiv identifier ',' expression
/// ::= .set identifier ',' expression
-bool AsmParser::ParseDirectiveSet(StringRef IDVal) {
+bool AsmParser::ParseDirectiveSet(StringRef IDVal, bool allow_redef) {
StringRef Name;
if (ParseIdentifier(Name))
- return TokError("expected identifier after '" + Twine(IDVal.str()) + "'");
+ return TokError("expected identifier after '" + Twine(IDVal) + "'");
if (getLexer().isNot(AsmToken::Comma))
- return TokError("unexpected token in '" + Twine(IDVal.str()) + "'");
+ return TokError("unexpected token in '" + Twine(IDVal) + "'");
Lex();
- return ParseAssignment(Name);
+ return ParseAssignment(Name, allow_redef);
}
bool AsmParser::ParseEscapedString(std::string &Data) {
}
/// ParseDirectiveAscii:
-/// ::= ( .ascii | .asciz ) [ "string" ( , "string" )* ]
-bool AsmParser::ParseDirectiveAscii(bool ZeroTerminated) {
+/// ::= ( .ascii | .asciz | .string ) [ "string" ( , "string" )* ]
+bool AsmParser::ParseDirectiveAscii(StringRef IDVal, bool ZeroTerminated) {
if (getLexer().isNot(AsmToken::EndOfStatement)) {
CheckForValidSection();
for (;;) {
if (getLexer().isNot(AsmToken::String))
- return TokError("expected string in '.ascii' or '.asciz' directive");
+ return TokError("expected string in '" + Twine(IDVal) + "' directive");
std::string Data;
if (ParseEscapedString(Data))
break;
if (getLexer().isNot(AsmToken::Comma))
- return TokError("unexpected token in '.ascii' or '.asciz' directive");
+ return TokError("unexpected token in '" + Twine(IDVal) + "' directive");
Lex();
}
}
return false;
}
+bool AsmParser::ParseDirectiveIfdef(SMLoc DirectiveLoc, bool expect_defined) {
+ StringRef Name;
+ TheCondStack.push_back(TheCondState);
+ TheCondState.TheCond = AsmCond::IfCond;
+
+ if (TheCondState.Ignore) {
+ EatToEndOfStatement();
+ } else {
+ if (ParseIdentifier(Name))
+ return TokError("expected identifier after '.ifdef'");
+
+ Lex();
+
+ MCSymbol *Sym = getContext().LookupSymbol(Name);
+
+ if (expect_defined)
+ TheCondState.CondMet = (Sym != NULL && !Sym->isUndefined());
+ else
+ TheCondState.CondMet = (Sym == NULL || Sym->isUndefined());
+ TheCondState.Ignore = !TheCondState.CondMet;
+ }
+
+ return false;
+}
+
/// ParseDirectiveElseIf
/// ::= .elseif expression
bool AsmParser::ParseDirectiveElseIf(SMLoc DirectiveLoc) {
if (FileNumber == -1)
getStreamer().EmitFileDirective(Filename);
else {
- if (getContext().GetDwarfFile(Filename, FileNumber) == 0)
+ if (getStreamer().EmitDwarfFileDirective(FileNumber, Filename))
Error(FileNumberLoc, "file number already allocated");
- getStreamer().EmitDwarfFileDirective(FileNumber, Filename);
}
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))
return Error(Loc, "isa number not a constant value");
}
}
+ else if (Name == "discriminator") {
+ if (getParser().ParseAbsoluteExpression(Discriminator))
+ return true;
+ }
else {
return Error(Loc, "unknown sub-directive in '.loc' directive");
}
}
}
- getContext().setCurrentDwarfLoc(FileNumber, LineNumber, ColumnPos, Flags,Isa);
+ getStreamer().EmitDwarfLocDirective(FileNumber, LineNumber, ColumnPos, Flags,
+ Isa, Discriminator);
return false;
}
return TokError("unsupported directive '" + Directive + "'");
}
+/// ParseDirectiveCFIStartProc
+/// ::= .cfi_startproc
+bool GenericAsmParser::ParseDirectiveCFIStartProc(StringRef,
+ SMLoc DirectiveLoc) {
+ return getStreamer().EmitCFIStartProc();
+}
+
+/// ParseDirectiveCFIEndProc
+/// ::= .cfi_endproc
+bool GenericAsmParser::ParseDirectiveCFIEndProc(StringRef, SMLoc DirectiveLoc) {
+ return getStreamer().EmitCFIEndProc();
+}
+
+/// ParseRegisterOrRegisterNumber - parse register name or number.
+bool GenericAsmParser::ParseRegisterOrRegisterNumber(int64_t &Register,
+ SMLoc DirectiveLoc) {
+ unsigned RegNo;
+
+ if (getLexer().is(AsmToken::Percent)) {
+ if (getParser().getTargetParser().ParseRegister(RegNo, DirectiveLoc,
+ DirectiveLoc))
+ return true;
+ Register = getContext().getTargetAsmInfo().getDwarfRegNum(RegNo, true);
+ } else
+ return getParser().ParseAbsoluteExpression(Register);
+
+ return false;
+}
+
+/// ParseDirectiveCFIDefCfa
+/// ::= .cfi_def_cfa register, offset
+bool GenericAsmParser::ParseDirectiveCFIDefCfa(StringRef,
+ SMLoc DirectiveLoc) {
+ int64_t Register = 0;
+ if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
+ return true;
+
+ if (getLexer().isNot(AsmToken::Comma))
+ return TokError("unexpected token in directive");
+ Lex();
+
+ int64_t Offset = 0;
+ if (getParser().ParseAbsoluteExpression(Offset))
+ return true;
+
+ return getStreamer().EmitCFIDefCfa(Register, Offset);
+}
+
+/// ParseDirectiveCFIDefCfaOffset
+/// ::= .cfi_def_cfa_offset offset
+bool GenericAsmParser::ParseDirectiveCFIDefCfaOffset(StringRef,
+ SMLoc DirectiveLoc) {
+ int64_t Offset = 0;
+ if (getParser().ParseAbsoluteExpression(Offset))
+ return true;
+
+ return getStreamer().EmitCFIDefCfaOffset(Offset);
+}
+
+/// ParseDirectiveCFIDefCfaRegister
+/// ::= .cfi_def_cfa_register register
+bool GenericAsmParser::ParseDirectiveCFIDefCfaRegister(StringRef,
+ SMLoc DirectiveLoc) {
+ int64_t Register = 0;
+ if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
+ return true;
+
+ return getStreamer().EmitCFIDefCfaRegister(Register);
+}
+
+/// ParseDirectiveCFIOffset
+/// ::= .cfi_off register, offset
+bool GenericAsmParser::ParseDirectiveCFIOffset(StringRef, SMLoc DirectiveLoc) {
+ int64_t Register = 0;
+ int64_t Offset = 0;
+
+ if (ParseRegisterOrRegisterNumber(Register, DirectiveLoc))
+ return true;
+
+ if (getLexer().isNot(AsmToken::Comma))
+ return TokError("unexpected token in directive");
+ Lex();
+
+ if (getParser().ParseAbsoluteExpression(Offset))
+ return true;
+
+ return getStreamer().EmitCFIOffset(Register, Offset);
+}
+
+static bool isValidEncoding(int64_t Encoding) {
+ if (Encoding & ~0xff)
+ return false;
+
+ if (Encoding == dwarf::DW_EH_PE_omit)
+ return true;
+
+ const unsigned Format = Encoding & 0xf;
+ if (Format != dwarf::DW_EH_PE_absptr && Format != dwarf::DW_EH_PE_udata2 &&
+ Format != dwarf::DW_EH_PE_udata4 && Format != dwarf::DW_EH_PE_udata8 &&
+ Format != dwarf::DW_EH_PE_sdata2 && Format != dwarf::DW_EH_PE_sdata4 &&
+ Format != dwarf::DW_EH_PE_sdata8 && Format != dwarf::DW_EH_PE_signed)
+ return false;
+
+ const unsigned Application = Encoding & 0x70;
+ if (Application != dwarf::DW_EH_PE_absptr &&
+ Application != dwarf::DW_EH_PE_pcrel)
+ return false;
+
+ return true;
+}
+
+/// ParseDirectiveCFIPersonalityOrLsda
+/// ::= .cfi_personality encoding, [symbol_name]
+/// ::= .cfi_lsda encoding, [symbol_name]
+bool GenericAsmParser::ParseDirectiveCFIPersonalityOrLsda(StringRef 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.");
+
+ if (getLexer().isNot(AsmToken::Comma))
+ return TokError("unexpected token in directive");
+ Lex();
+
+ StringRef Name;
+ if (getParser().ParseIdentifier(Name))
+ return TokError("expected identifier in directive");
+
+ MCSymbol *Sym = getContext().GetOrCreateSymbol(Name);
+
+ if (IDVal == ".cfi_personality")
+ return getStreamer().EmitCFIPersonality(Sym, Encoding);
+ else {
+ assert(IDVal == ".cfi_lsda");
+ return getStreamer().EmitCFILsda(Sym, Encoding);
+ }
+}
+
+/// ParseDirectiveCFIRememberState
+/// ::= .cfi_remember_state
+bool GenericAsmParser::ParseDirectiveCFIRememberState(StringRef IDVal,
+ SMLoc DirectiveLoc) {
+ return getStreamer().EmitCFIRememberState();
+}
+
+/// ParseDirectiveCFIRestoreState
+/// ::= .cfi_remember_state
+bool GenericAsmParser::ParseDirectiveCFIRestoreState(StringRef IDVal,
+ SMLoc DirectiveLoc) {
+ return getStreamer().EmitCFIRestoreState();
+}
+
/// ParseDirectiveMacrosOnOff
/// ::= .macros_on
/// ::= .macros_off
"no current macro definition");
}
-void GenericAsmParser::ParseUleb128(uint64_t Value) {
- const uint64_t Mask = (1 << 7) - 1;
- do {
- unsigned Byte = Value & Mask;
- Value >>= 7;
- if (Value) // Not the last one
- Byte |= (1 << 7);
- getStreamer().EmitIntValue(Byte, 1, DEFAULT_ADDRSPACE);
- } while (Value);
-}
-
-void GenericAsmParser::ParseSleb128(int64_t Value) {
- const int64_t Mask = (1 << 7) - 1;
- for(;;) {
- unsigned Byte = Value & Mask;
- Value >>= 7;
- bool Done = ((Value == 0 && (Byte & 0x40) == 0) ||
- (Value == -1 && (Byte & 0x40) != 0));
- if (!Done)
- Byte |= (1 << 7);
- getStreamer().EmitIntValue(Byte, 1, DEFAULT_ADDRSPACE);
- if (Done)
- break;
- }
-}
-
bool GenericAsmParser::ParseDirectiveLEB128(StringRef DirName, SMLoc) {
- int64_t Value;
- if (getParser().ParseAbsoluteExpression(Value))
+ getParser().CheckForValidSection();
+
+ const MCExpr *Value;
+
+ if (getParser().ParseExpression(Value))
return true;
if (getLexer().isNot(AsmToken::EndOfStatement))
return TokError("unexpected token in directive");
if (DirName[1] == 's')
- ParseSleb128(Value);
+ getStreamer().EmitSLEB128Value(Value);
else
- ParseUleb128(Value);
+ getStreamer().EmitULEB128Value(Value);
+
return false;
}
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