2009-06-21 20:16:42 +00:00
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//===- AsmParser.cpp - Parser for Assembly Files --------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This class implements the parser for assembly files.
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//
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//===----------------------------------------------------------------------===//
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2010-01-22 01:58:08 +00:00
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#include "llvm/MC/MCParser/AsmParser.h"
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2009-08-26 22:49:51 +00:00
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#include "llvm/ADT/SmallString.h"
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2010-05-21 11:36:59 +00:00
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#include "llvm/ADT/StringSwitch.h"
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2009-07-27 23:20:52 +00:00
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#include "llvm/ADT/Twine.h"
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2009-06-23 22:01:43 +00:00
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#include "llvm/MC/MCContext.h"
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2009-08-31 08:06:59 +00:00
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#include "llvm/MC/MCExpr.h"
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2009-06-23 18:41:30 +00:00
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#include "llvm/MC/MCInst.h"
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2010-07-12 20:08:04 +00:00
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#include "llvm/MC/MCSectionELF.h"
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2009-06-23 22:01:43 +00:00
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#include "llvm/MC/MCStreamer.h"
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2009-06-29 23:43:14 +00:00
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#include "llvm/MC/MCSymbol.h"
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2010-01-22 01:44:57 +00:00
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#include "llvm/MC/MCParser/MCParsedAsmOperand.h"
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2009-12-28 01:34:57 +00:00
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#include "llvm/Support/Compiler.h"
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2009-06-21 20:54:55 +00:00
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#include "llvm/Support/SourceMgr.h"
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2010-06-28 21:45:58 +00:00
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#include "llvm/Support/MemoryBuffer.h"
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2009-06-21 20:54:55 +00:00
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#include "llvm/Support/raw_ostream.h"
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2009-07-20 18:55:04 +00:00
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#include "llvm/Target/TargetAsmParser.h"
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2009-06-21 20:16:42 +00:00
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using namespace llvm;
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2010-07-12 17:54:38 +00:00
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namespace {
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/// \brief Generic implementations of directive handling, etc. which is shared
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/// (or the default, at least) for all assembler parser.
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class GenericAsmParser : public MCAsmParserExtension {
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public:
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GenericAsmParser() {}
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virtual void Initialize(MCAsmParser &Parser) {
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// Call the base implementation.
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this->MCAsmParserExtension::Initialize(Parser);
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// Debugging directives.
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Parser.AddDirectiveHandler(this, ".file", MCAsmParser::DirectiveHandler(
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&GenericAsmParser::ParseDirectiveFile));
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Parser.AddDirectiveHandler(this, ".line", MCAsmParser::DirectiveHandler(
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&GenericAsmParser::ParseDirectiveLine));
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Parser.AddDirectiveHandler(this, ".loc", MCAsmParser::DirectiveHandler(
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&GenericAsmParser::ParseDirectiveLoc));
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}
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bool ParseDirectiveFile(StringRef, SMLoc DirectiveLoc); // ".file"
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bool ParseDirectiveLine(StringRef, SMLoc DirectiveLoc); // ".line"
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bool ParseDirectiveLoc(StringRef, SMLoc DirectiveLoc); // ".loc"
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};
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2010-07-12 20:08:04 +00:00
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class ELFAsmParser : public MCAsmParserExtension {
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bool ParseSectionSwitch(StringRef Section, unsigned Type,
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unsigned Flags, SectionKind Kind);
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public:
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ELFAsmParser() {}
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virtual void Initialize(MCAsmParser &Parser) {
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// Call the base implementation.
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this->MCAsmParserExtension::Initialize(Parser);
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Parser.AddDirectiveHandler(this, ".data", MCAsmParser::DirectiveHandler(
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&ELFAsmParser::ParseSectionDirectiveData));
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Parser.AddDirectiveHandler(this, ".text", MCAsmParser::DirectiveHandler(
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&ELFAsmParser::ParseSectionDirectiveText));
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}
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bool ParseSectionDirectiveData(StringRef, SMLoc) {
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return ParseSectionSwitch(".data", MCSectionELF::SHT_PROGBITS,
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MCSectionELF::SHF_WRITE |MCSectionELF::SHF_ALLOC,
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SectionKind::getDataRel());
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}
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bool ParseSectionDirectiveText(StringRef, SMLoc) {
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return ParseSectionSwitch(".text", MCSectionELF::SHT_PROGBITS,
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MCSectionELF::SHF_EXECINSTR |
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MCSectionELF::SHF_ALLOC, SectionKind::getText());
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}
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};
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2010-07-12 17:54:38 +00:00
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}
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2010-07-12 20:51:51 +00:00
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namespace llvm {
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extern MCAsmParserExtension *createDarwinAsmParser();
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}
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2010-01-19 19:46:13 +00:00
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enum { DEFAULT_ADDRSPACE = 0 };
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2010-07-01 20:41:56 +00:00
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AsmParser::AsmParser(const Target &T, SourceMgr &_SM, MCContext &_Ctx,
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MCStreamer &_Out, const MCAsmInfo &_MAI)
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2010-07-12 17:54:38 +00:00
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: Lexer(_MAI), Ctx(_Ctx), Out(_Out), SrcMgr(_SM),
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2010-07-12 18:12:02 +00:00
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GenericParser(new GenericAsmParser), PlatformParser(0),
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TargetParser(0), CurBuffer(0) {
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2010-01-21 00:19:58 +00:00
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Lexer.setBuffer(SrcMgr.getMemoryBuffer(CurBuffer));
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2010-07-12 17:54:38 +00:00
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// Initialize the generic parser.
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GenericParser->Initialize(*this);
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2010-07-12 18:12:02 +00:00
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// Initialize the platform / file format parser.
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//
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// FIXME: This is a hack, we need to (majorly) cleanup how these objects are
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// created.
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if (_MAI.hasSubsectionsViaSymbols()) {
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2010-07-12 20:51:51 +00:00
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PlatformParser = createDarwinAsmParser();
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2010-07-12 18:12:02 +00:00
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PlatformParser->Initialize(*this);
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2010-07-12 20:08:04 +00:00
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} else {
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PlatformParser = new ELFAsmParser;
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PlatformParser->Initialize(*this);
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2010-07-12 18:12:02 +00:00
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}
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2009-09-27 21:16:52 +00:00
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}
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2009-08-26 22:49:51 +00:00
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AsmParser::~AsmParser() {
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2010-07-12 18:12:02 +00:00
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delete PlatformParser;
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2010-07-12 17:54:38 +00:00
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delete GenericParser;
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2009-08-26 22:49:51 +00:00
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}
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2010-07-12 17:27:45 +00:00
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void AsmParser::setTargetParser(TargetAsmParser &P) {
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assert(!TargetParser && "Target parser is already initialized!");
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TargetParser = &P;
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TargetParser->Initialize(*this);
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}
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2009-07-27 23:20:52 +00:00
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void AsmParser::Warning(SMLoc L, const Twine &Msg) {
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2010-01-20 23:19:55 +00:00
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PrintMessage(L, Msg.str(), "warning");
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2009-06-30 00:49:23 +00:00
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}
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2009-07-27 23:20:52 +00:00
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bool AsmParser::Error(SMLoc L, const Twine &Msg) {
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2010-01-20 23:19:55 +00:00
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PrintMessage(L, Msg.str(), "error");
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2009-06-21 21:22:11 +00:00
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return true;
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}
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2010-01-20 23:19:55 +00:00
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void AsmParser::PrintMessage(SMLoc Loc, const std::string &Msg,
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const char *Type) const {
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SrcMgr.PrintMessage(Loc, Msg, Type);
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}
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2010-01-21 00:19:58 +00:00
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bool AsmParser::EnterIncludeFile(const std::string &Filename) {
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int NewBuf = SrcMgr.AddIncludeFile(Filename, Lexer.getLoc());
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if (NewBuf == -1)
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return true;
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CurBuffer = NewBuf;
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Lexer.setBuffer(SrcMgr.getMemoryBuffer(CurBuffer));
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return false;
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}
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2010-01-19 20:22:31 +00:00
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const AsmToken &AsmParser::Lex() {
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2010-01-21 00:19:58 +00:00
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const AsmToken *tok = &Lexer.Lex();
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2010-01-20 22:18:24 +00:00
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2010-01-21 00:19:58 +00:00
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if (tok->is(AsmToken::Eof)) {
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// If this is the end of an included file, pop the parent file off the
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// include stack.
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SMLoc ParentIncludeLoc = SrcMgr.getParentIncludeLoc(CurBuffer);
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if (ParentIncludeLoc != SMLoc()) {
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CurBuffer = SrcMgr.FindBufferContainingLoc(ParentIncludeLoc);
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Lexer.setBuffer(SrcMgr.getMemoryBuffer(CurBuffer),
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ParentIncludeLoc.getPointer());
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tok = &Lexer.Lex();
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}
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}
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if (tok->is(AsmToken::Error))
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2010-01-20 23:19:55 +00:00
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PrintMessage(Lexer.getErrLoc(), Lexer.getErr(), "error");
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2010-01-20 22:18:24 +00:00
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2010-01-21 00:19:58 +00:00
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return *tok;
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2010-01-19 20:22:31 +00:00
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}
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2010-04-05 23:15:42 +00:00
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bool AsmParser::Run(bool NoInitialTextSection, bool NoFinalize) {
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2010-03-13 02:20:57 +00:00
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// Create the initial section, if requested.
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2009-08-26 22:49:51 +00:00
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//
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// FIXME: Target hook & command line option for initial section.
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2010-03-13 02:20:57 +00:00
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if (!NoInitialTextSection)
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2010-04-08 20:30:37 +00:00
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Out.SwitchSection(Ctx.getMachOSection("__TEXT", "__text",
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2010-03-13 02:20:57 +00:00
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MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
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0, SectionKind::getText()));
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2009-08-26 22:49:51 +00:00
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2009-06-21 20:54:55 +00:00
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// Prime the lexer.
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2010-01-19 20:22:31 +00:00
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Lex();
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2009-06-21 20:54:55 +00:00
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2009-07-02 21:53:43 +00:00
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bool HadError = false;
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2009-06-21 20:54:55 +00:00
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2009-08-07 22:46:00 +00:00
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AsmCond StartingCondState = TheCondState;
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2009-07-02 21:53:43 +00:00
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// While we have input, parse each statement.
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2009-07-28 16:08:33 +00:00
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while (Lexer.isNot(AsmToken::Eof)) {
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2009-07-02 21:53:43 +00:00
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if (!ParseStatement()) continue;
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2009-08-07 22:46:00 +00:00
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// We had an error, remember it and recover by skipping to the next line.
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2009-07-02 21:53:43 +00:00
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HadError = true;
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EatToEndOfStatement();
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}
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2009-08-07 22:46:00 +00:00
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if (TheCondState.TheCond != StartingCondState.TheCond ||
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TheCondState.Ignore != StartingCondState.Ignore)
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return TokError("unmatched .ifs or .elses");
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2009-07-02 21:53:43 +00:00
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2010-04-05 23:15:42 +00:00
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// Finalize the output stream if there are no errors and if the client wants
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// us to.
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if (!HadError && !NoFinalize)
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2009-08-21 08:34:18 +00:00
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Out.Finish();
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2009-07-02 21:53:43 +00:00
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return HadError;
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2009-06-21 20:54:55 +00:00
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}
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2009-06-22 01:29:09 +00:00
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/// EatToEndOfStatement - Throw away the rest of the line for testing purposes.
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void AsmParser::EatToEndOfStatement() {
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2009-07-28 16:08:33 +00:00
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while (Lexer.isNot(AsmToken::EndOfStatement) &&
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Lexer.isNot(AsmToken::Eof))
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2010-01-19 20:22:31 +00:00
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Lex();
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2009-06-22 01:29:09 +00:00
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// Eat EOL.
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2009-07-28 16:08:33 +00:00
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if (Lexer.is(AsmToken::EndOfStatement))
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2010-01-19 20:22:31 +00:00
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Lex();
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2009-06-22 01:29:09 +00:00
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}
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2009-06-22 05:51:26 +00:00
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2009-06-22 06:32:03 +00:00
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/// ParseParenExpr - Parse a paren expression and return it.
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/// NOTE: This assumes the leading '(' has already been consumed.
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///
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/// parenexpr ::= expr)
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///
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2010-01-15 19:28:38 +00:00
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bool AsmParser::ParseParenExpr(const MCExpr *&Res, SMLoc &EndLoc) {
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2009-06-22 06:32:03 +00:00
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if (ParseExpression(Res)) return true;
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2009-07-28 16:08:33 +00:00
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if (Lexer.isNot(AsmToken::RParen))
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2009-06-22 06:32:03 +00:00
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return TokError("expected ')' in parentheses expression");
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2010-01-15 19:28:38 +00:00
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EndLoc = Lexer.getLoc();
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2010-01-19 20:22:31 +00:00
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Lex();
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2009-06-22 06:32:03 +00:00
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return false;
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}
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2009-06-21 20:54:55 +00:00
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2009-06-22 06:32:03 +00:00
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/// ParsePrimaryExpr - Parse a primary expression and return it.
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/// primaryexpr ::= (parenexpr
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/// primaryexpr ::= symbol
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/// primaryexpr ::= number
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2010-04-14 04:40:28 +00:00
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/// primaryexpr ::= '.'
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2009-06-22 06:32:03 +00:00
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/// primaryexpr ::= ~,+,- primaryexpr
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2010-01-15 19:28:38 +00:00
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bool AsmParser::ParsePrimaryExpr(const MCExpr *&Res, SMLoc &EndLoc) {
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2009-06-22 05:51:26 +00:00
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switch (Lexer.getKind()) {
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default:
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return TokError("unknown token in expression");
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2009-07-28 16:08:33 +00:00
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case AsmToken::Exclaim:
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2010-01-19 20:22:31 +00:00
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Lex(); // Eat the operator.
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2010-01-15 19:28:38 +00:00
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if (ParsePrimaryExpr(Res, EndLoc))
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2009-06-29 20:37:27 +00:00
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return true;
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2009-08-31 08:07:44 +00:00
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Res = MCUnaryExpr::CreateLNot(Res, getContext());
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2009-06-29 20:37:27 +00:00
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return false;
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2009-07-31 21:55:09 +00:00
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case AsmToken::String:
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2009-10-16 01:34:54 +00:00
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case AsmToken::Identifier: {
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// This is a symbol reference.
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2010-03-15 23:51:06 +00:00
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std::pair<StringRef, StringRef> Split = getTok().getIdentifier().split('@');
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2010-07-12 19:52:10 +00:00
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MCSymbol *Sym = getContext().GetOrCreateSymbol(Split.first);
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2010-03-15 23:51:06 +00:00
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2010-05-17 17:46:23 +00:00
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// Mark the symbol as used in an expression.
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Sym->setUsedInExpr(true);
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2010-03-15 23:51:06 +00:00
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// Lookup the symbol variant if used.
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MCSymbolRefExpr::VariantKind Variant = MCSymbolRefExpr::VK_None;
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if (Split.first.size() != getTok().getIdentifier().size())
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Variant = MCSymbolRefExpr::getVariantKindForName(Split.second);
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2010-01-15 19:28:38 +00:00
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EndLoc = Lexer.getLoc();
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2010-01-19 20:22:31 +00:00
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Lex(); // Eat identifier.
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2009-10-16 01:34:54 +00:00
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// If this is an absolute variable reference, substitute it now to preserve
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// semantics in the face of reassignment.
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2010-05-05 17:41:00 +00:00
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if (Sym->isVariable() && isa<MCConstantExpr>(Sym->getVariableValue())) {
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2010-03-15 23:51:06 +00:00
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if (Variant)
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return Error(EndLoc, "unexpected modified on variable reference");
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2010-05-05 17:41:00 +00:00
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Res = Sym->getVariableValue();
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2009-10-16 01:34:54 +00:00
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return false;
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}
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// Otherwise create a symbol ref.
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2010-03-15 23:51:06 +00:00
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|
|
Res = MCSymbolRefExpr::Create(Sym, Variant, getContext());
|
2009-06-22 05:51:26 +00:00
|
|
|
return false;
|
2009-10-16 01:34:54 +00:00
|
|
|
}
|
2010-05-17 23:08:19 +00:00
|
|
|
case AsmToken::Integer: {
|
|
|
|
SMLoc Loc = getTok().getLoc();
|
|
|
|
int64_t IntVal = getTok().getIntVal();
|
|
|
|
Res = MCConstantExpr::Create(IntVal, getContext());
|
2010-01-15 19:28:38 +00:00
|
|
|
EndLoc = Lexer.getLoc();
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex(); // Eat token.
|
2010-05-17 23:08:19 +00:00
|
|
|
// Look for 'b' or 'f' following an Integer as a directional label
|
|
|
|
if (Lexer.getKind() == AsmToken::Identifier) {
|
|
|
|
StringRef IDVal = getTok().getString();
|
|
|
|
if (IDVal == "f" || IDVal == "b"){
|
|
|
|
MCSymbol *Sym = Ctx.GetDirectionalLocalSymbol(IntVal,
|
|
|
|
IDVal == "f" ? 1 : 0);
|
|
|
|
Res = MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_None,
|
|
|
|
getContext());
|
|
|
|
if(IDVal == "b" && Sym->isUndefined())
|
|
|
|
return Error(Loc, "invalid reference to undefined symbol");
|
|
|
|
EndLoc = Lexer.getLoc();
|
|
|
|
Lex(); // Eat identifier.
|
|
|
|
}
|
|
|
|
}
|
2009-06-22 05:51:26 +00:00
|
|
|
return false;
|
2010-05-17 23:08:19 +00:00
|
|
|
}
|
2010-04-14 04:40:28 +00:00
|
|
|
case AsmToken::Dot: {
|
|
|
|
// This is a '.' reference, which references the current PC. Emit a
|
|
|
|
// temporary label to the streamer and refer to it.
|
|
|
|
MCSymbol *Sym = Ctx.CreateTempSymbol();
|
|
|
|
Out.EmitLabel(Sym);
|
|
|
|
Res = MCSymbolRefExpr::Create(Sym, MCSymbolRefExpr::VK_None, getContext());
|
|
|
|
EndLoc = Lexer.getLoc();
|
|
|
|
Lex(); // Eat identifier.
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::LParen:
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex(); // Eat the '('.
|
2010-01-15 19:28:38 +00:00
|
|
|
return ParseParenExpr(Res, EndLoc);
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::Minus:
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex(); // Eat the operator.
|
2010-01-15 19:28:38 +00:00
|
|
|
if (ParsePrimaryExpr(Res, EndLoc))
|
2009-06-29 20:37:27 +00:00
|
|
|
return true;
|
2009-08-31 08:07:44 +00:00
|
|
|
Res = MCUnaryExpr::CreateMinus(Res, getContext());
|
2009-06-29 20:37:27 +00:00
|
|
|
return false;
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::Plus:
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex(); // Eat the operator.
|
2010-01-15 19:28:38 +00:00
|
|
|
if (ParsePrimaryExpr(Res, EndLoc))
|
2009-06-29 20:37:27 +00:00
|
|
|
return true;
|
2009-08-31 08:07:44 +00:00
|
|
|
Res = MCUnaryExpr::CreatePlus(Res, getContext());
|
2009-06-29 20:37:27 +00:00
|
|
|
return false;
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::Tilde:
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex(); // Eat the operator.
|
2010-01-15 19:28:38 +00:00
|
|
|
if (ParsePrimaryExpr(Res, EndLoc))
|
2009-06-29 20:37:27 +00:00
|
|
|
return true;
|
2009-08-31 08:07:44 +00:00
|
|
|
Res = MCUnaryExpr::CreateNot(Res, getContext());
|
2009-06-29 20:37:27 +00:00
|
|
|
return false;
|
2009-06-22 05:51:26 +00:00
|
|
|
}
|
|
|
|
}
|
2009-06-22 06:32:03 +00:00
|
|
|
|
2010-01-15 19:28:38 +00:00
|
|
|
bool AsmParser::ParseExpression(const MCExpr *&Res) {
|
2010-01-15 19:39:23 +00:00
|
|
|
SMLoc EndLoc;
|
|
|
|
return ParseExpression(Res, EndLoc);
|
2010-01-15 19:28:38 +00:00
|
|
|
}
|
|
|
|
|
2009-06-22 06:32:03 +00:00
|
|
|
/// ParseExpression - Parse an expression and return it.
|
|
|
|
///
|
|
|
|
/// expr ::= expr +,- expr -> lowest.
|
|
|
|
/// expr ::= expr |,^,&,! expr -> middle.
|
|
|
|
/// expr ::= expr *,/,%,<<,>> expr -> highest.
|
|
|
|
/// expr ::= primaryexpr
|
|
|
|
///
|
2010-01-15 19:39:23 +00:00
|
|
|
bool AsmParser::ParseExpression(const MCExpr *&Res, SMLoc &EndLoc) {
|
2010-02-13 01:28:07 +00:00
|
|
|
// Parse the expression.
|
2009-06-29 20:37:27 +00:00
|
|
|
Res = 0;
|
2010-02-13 01:28:07 +00:00
|
|
|
if (ParsePrimaryExpr(Res, EndLoc) || ParseBinOpRHS(1, Res, EndLoc))
|
|
|
|
return true;
|
|
|
|
|
|
|
|
// Try to constant fold it up front, if possible.
|
|
|
|
int64_t Value;
|
|
|
|
if (Res->EvaluateAsAbsolute(Value))
|
|
|
|
Res = MCConstantExpr::Create(Value, getContext());
|
|
|
|
|
|
|
|
return false;
|
2009-06-22 06:32:03 +00:00
|
|
|
}
|
2009-06-23 05:57:07 +00:00
|
|
|
|
2010-01-15 19:28:38 +00:00
|
|
|
bool AsmParser::ParseParenExpression(const MCExpr *&Res, SMLoc &EndLoc) {
|
2010-01-24 01:07:33 +00:00
|
|
|
Res = 0;
|
|
|
|
return ParseParenExpr(Res, EndLoc) ||
|
|
|
|
ParseBinOpRHS(1, Res, EndLoc);
|
2009-08-31 08:08:17 +00:00
|
|
|
}
|
|
|
|
|
2009-06-29 20:37:27 +00:00
|
|
|
bool AsmParser::ParseAbsoluteExpression(int64_t &Res) {
|
2009-08-31 08:07:22 +00:00
|
|
|
const MCExpr *Expr;
|
2009-06-29 20:37:27 +00:00
|
|
|
|
2009-06-30 02:10:03 +00:00
|
|
|
SMLoc StartLoc = Lexer.getLoc();
|
2009-06-29 20:37:27 +00:00
|
|
|
if (ParseExpression(Expr))
|
|
|
|
return true;
|
|
|
|
|
2009-10-16 01:57:52 +00:00
|
|
|
if (!Expr->EvaluateAsAbsolute(Res))
|
2009-06-30 02:10:03 +00:00
|
|
|
return Error(StartLoc, "expected absolute expression");
|
2009-06-29 20:37:27 +00:00
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2009-07-28 16:08:33 +00:00
|
|
|
static unsigned getBinOpPrecedence(AsmToken::TokenKind K,
|
2009-08-31 08:06:59 +00:00
|
|
|
MCBinaryExpr::Opcode &Kind) {
|
2009-06-23 05:57:07 +00:00
|
|
|
switch (K) {
|
2009-08-31 08:07:44 +00:00
|
|
|
default:
|
|
|
|
return 0; // not a binop.
|
2009-06-29 20:37:27 +00:00
|
|
|
|
|
|
|
// Lowest Precedence: &&, ||
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::AmpAmp:
|
2009-08-31 08:06:59 +00:00
|
|
|
Kind = MCBinaryExpr::LAnd;
|
2009-06-29 20:37:27 +00:00
|
|
|
return 1;
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::PipePipe:
|
2009-08-31 08:06:59 +00:00
|
|
|
Kind = MCBinaryExpr::LOr;
|
2009-06-29 20:37:27 +00:00
|
|
|
return 1;
|
|
|
|
|
|
|
|
// Low Precedence: +, -, ==, !=, <>, <, <=, >, >=
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::Plus:
|
2009-08-31 08:06:59 +00:00
|
|
|
Kind = MCBinaryExpr::Add;
|
2009-06-29 20:37:27 +00:00
|
|
|
return 2;
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::Minus:
|
2009-08-31 08:06:59 +00:00
|
|
|
Kind = MCBinaryExpr::Sub;
|
2009-06-29 20:37:27 +00:00
|
|
|
return 2;
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::EqualEqual:
|
2009-08-31 08:06:59 +00:00
|
|
|
Kind = MCBinaryExpr::EQ;
|
2009-06-29 20:37:27 +00:00
|
|
|
return 2;
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::ExclaimEqual:
|
|
|
|
case AsmToken::LessGreater:
|
2009-08-31 08:06:59 +00:00
|
|
|
Kind = MCBinaryExpr::NE;
|
2009-06-29 20:37:27 +00:00
|
|
|
return 2;
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::Less:
|
2009-08-31 08:06:59 +00:00
|
|
|
Kind = MCBinaryExpr::LT;
|
2009-06-29 20:37:27 +00:00
|
|
|
return 2;
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::LessEqual:
|
2009-08-31 08:06:59 +00:00
|
|
|
Kind = MCBinaryExpr::LTE;
|
2009-06-29 20:37:27 +00:00
|
|
|
return 2;
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::Greater:
|
2009-08-31 08:06:59 +00:00
|
|
|
Kind = MCBinaryExpr::GT;
|
2009-06-29 20:37:27 +00:00
|
|
|
return 2;
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::GreaterEqual:
|
2009-08-31 08:06:59 +00:00
|
|
|
Kind = MCBinaryExpr::GTE;
|
2009-06-29 20:37:27 +00:00
|
|
|
return 2;
|
|
|
|
|
|
|
|
// Intermediate Precedence: |, &, ^
|
|
|
|
//
|
|
|
|
// FIXME: gas seems to support '!' as an infix operator?
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::Pipe:
|
2009-08-31 08:06:59 +00:00
|
|
|
Kind = MCBinaryExpr::Or;
|
2009-06-29 20:37:27 +00:00
|
|
|
return 3;
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::Caret:
|
2009-08-31 08:06:59 +00:00
|
|
|
Kind = MCBinaryExpr::Xor;
|
2009-06-29 20:37:27 +00:00
|
|
|
return 3;
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::Amp:
|
2009-08-31 08:06:59 +00:00
|
|
|
Kind = MCBinaryExpr::And;
|
2009-06-29 20:37:27 +00:00
|
|
|
return 3;
|
|
|
|
|
|
|
|
// Highest Precedence: *, /, %, <<, >>
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::Star:
|
2009-08-31 08:06:59 +00:00
|
|
|
Kind = MCBinaryExpr::Mul;
|
2009-06-29 20:37:27 +00:00
|
|
|
return 4;
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::Slash:
|
2009-08-31 08:06:59 +00:00
|
|
|
Kind = MCBinaryExpr::Div;
|
2009-06-29 20:37:27 +00:00
|
|
|
return 4;
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::Percent:
|
2009-08-31 08:06:59 +00:00
|
|
|
Kind = MCBinaryExpr::Mod;
|
2009-06-29 20:37:27 +00:00
|
|
|
return 4;
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::LessLess:
|
2009-08-31 08:06:59 +00:00
|
|
|
Kind = MCBinaryExpr::Shl;
|
2009-06-29 20:37:27 +00:00
|
|
|
return 4;
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::GreaterGreater:
|
2009-08-31 08:06:59 +00:00
|
|
|
Kind = MCBinaryExpr::Shr;
|
2009-06-29 20:37:27 +00:00
|
|
|
return 4;
|
2009-06-23 05:57:07 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/// ParseBinOpRHS - Parse all binary operators with precedence >= 'Precedence'.
|
|
|
|
/// Res contains the LHS of the expression on input.
|
2010-01-15 19:28:38 +00:00
|
|
|
bool AsmParser::ParseBinOpRHS(unsigned Precedence, const MCExpr *&Res,
|
|
|
|
SMLoc &EndLoc) {
|
2009-06-23 05:57:07 +00:00
|
|
|
while (1) {
|
2009-08-31 08:06:59 +00:00
|
|
|
MCBinaryExpr::Opcode Kind = MCBinaryExpr::Add;
|
2009-06-29 20:37:27 +00:00
|
|
|
unsigned TokPrec = getBinOpPrecedence(Lexer.getKind(), Kind);
|
2009-06-23 05:57:07 +00:00
|
|
|
|
|
|
|
// If the next token is lower precedence than we are allowed to eat, return
|
|
|
|
// successfully with what we ate already.
|
|
|
|
if (TokPrec < Precedence)
|
|
|
|
return false;
|
|
|
|
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-23 05:57:07 +00:00
|
|
|
|
|
|
|
// Eat the next primary expression.
|
2009-08-31 08:07:22 +00:00
|
|
|
const MCExpr *RHS;
|
2010-01-15 19:28:38 +00:00
|
|
|
if (ParsePrimaryExpr(RHS, EndLoc)) return true;
|
2009-06-23 05:57:07 +00:00
|
|
|
|
|
|
|
// If BinOp binds less tightly with RHS than the operator after RHS, let
|
|
|
|
// the pending operator take RHS as its LHS.
|
2009-08-31 08:06:59 +00:00
|
|
|
MCBinaryExpr::Opcode Dummy;
|
2009-06-29 20:37:27 +00:00
|
|
|
unsigned NextTokPrec = getBinOpPrecedence(Lexer.getKind(), Dummy);
|
2009-06-23 05:57:07 +00:00
|
|
|
if (TokPrec < NextTokPrec) {
|
2010-01-15 19:28:38 +00:00
|
|
|
if (ParseBinOpRHS(Precedence+1, RHS, EndLoc)) return true;
|
2009-06-23 05:57:07 +00:00
|
|
|
}
|
|
|
|
|
2009-06-29 20:37:27 +00:00
|
|
|
// Merge LHS and RHS according to operator.
|
2009-08-31 08:07:44 +00:00
|
|
|
Res = MCBinaryExpr::Create(Kind, Res, RHS, getContext());
|
2009-06-23 05:57:07 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-06-22 05:51:26 +00:00
|
|
|
|
|
|
|
|
|
|
|
|
2009-06-21 20:54:55 +00:00
|
|
|
/// ParseStatement:
|
|
|
|
/// ::= EndOfStatement
|
2009-06-22 01:29:09 +00:00
|
|
|
/// ::= Label* Directive ...Operands... EndOfStatement
|
|
|
|
/// ::= Label* Identifier OperandList* EndOfStatement
|
2009-06-21 20:54:55 +00:00
|
|
|
bool AsmParser::ParseStatement() {
|
2009-08-01 00:48:30 +00:00
|
|
|
if (Lexer.is(AsmToken::EndOfStatement)) {
|
2010-05-23 18:36:34 +00:00
|
|
|
Out.AddBlankLine();
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-21 20:54:55 +00:00
|
|
|
return false;
|
|
|
|
}
|
2009-08-01 00:48:30 +00:00
|
|
|
|
|
|
|
// Statements always start with an identifier.
|
2010-01-19 21:44:56 +00:00
|
|
|
AsmToken ID = getTok();
|
2009-07-28 16:38:40 +00:00
|
|
|
SMLoc IDLoc = ID.getLoc();
|
2009-08-01 00:48:30 +00:00
|
|
|
StringRef IDVal;
|
2010-05-17 23:08:19 +00:00
|
|
|
int64_t LocalLabelVal = -1;
|
|
|
|
// GUESS allow an integer followed by a ':' as a directional local label
|
|
|
|
if (Lexer.is(AsmToken::Integer)) {
|
|
|
|
LocalLabelVal = getTok().getIntVal();
|
|
|
|
if (LocalLabelVal < 0) {
|
|
|
|
if (!TheCondState.Ignore)
|
|
|
|
return TokError("unexpected token at start of statement");
|
|
|
|
IDVal = "";
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
IDVal = getTok().getString();
|
|
|
|
Lex(); // Consume the integer token to be used as an identifier token.
|
|
|
|
if (Lexer.getKind() != AsmToken::Colon) {
|
2010-07-12 08:16:59 +00:00
|
|
|
if (!TheCondState.Ignore)
|
|
|
|
return TokError("unexpected token at start of statement");
|
2010-05-17 23:08:19 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (ParseIdentifier(IDVal)) {
|
2010-04-17 18:14:27 +00:00
|
|
|
if (!TheCondState.Ignore)
|
|
|
|
return TokError("unexpected token at start of statement");
|
|
|
|
IDVal = "";
|
|
|
|
}
|
2009-08-01 00:48:30 +00:00
|
|
|
|
2010-04-17 18:14:27 +00:00
|
|
|
// Handle conditional assembly here before checking for skipping. We
|
|
|
|
// have to do this so that .endif isn't skipped in a ".if 0" block for
|
|
|
|
// example.
|
|
|
|
if (IDVal == ".if")
|
|
|
|
return ParseDirectiveIf(IDLoc);
|
|
|
|
if (IDVal == ".elseif")
|
|
|
|
return ParseDirectiveElseIf(IDLoc);
|
|
|
|
if (IDVal == ".else")
|
|
|
|
return ParseDirectiveElse(IDLoc);
|
|
|
|
if (IDVal == ".endif")
|
|
|
|
return ParseDirectiveEndIf(IDLoc);
|
|
|
|
|
|
|
|
// If we are in a ".if 0" block, ignore this statement.
|
|
|
|
if (TheCondState.Ignore) {
|
|
|
|
EatToEndOfStatement();
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2009-08-01 00:48:30 +00:00
|
|
|
// FIXME: Recurse on local labels?
|
|
|
|
|
|
|
|
// See what kind of statement we have.
|
|
|
|
switch (Lexer.getKind()) {
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::Colon: {
|
2009-06-21 20:54:55 +00:00
|
|
|
// identifier ':' -> Label.
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-29 23:43:14 +00:00
|
|
|
|
|
|
|
// Diagnose attempt to use a variable as a label.
|
|
|
|
//
|
|
|
|
// FIXME: Diagnostics. Note the location of the definition as a label.
|
|
|
|
// FIXME: This doesn't diagnose assignment to a symbol which has been
|
|
|
|
// implicitly marked as external.
|
2010-05-17 23:08:19 +00:00
|
|
|
MCSymbol *Sym;
|
|
|
|
if (LocalLabelVal == -1)
|
2010-07-12 19:52:10 +00:00
|
|
|
Sym = getContext().GetOrCreateSymbol(IDVal);
|
2010-05-17 23:08:19 +00:00
|
|
|
else
|
|
|
|
Sym = Ctx.CreateDirectionalLocalSymbol(LocalLabelVal);
|
2010-05-05 19:01:00 +00:00
|
|
|
if (!Sym->isUndefined() || Sym->isVariable())
|
2009-06-29 23:43:14 +00:00
|
|
|
return Error(IDLoc, "invalid symbol redefinition");
|
2009-06-24 04:31:49 +00:00
|
|
|
|
2009-08-26 22:13:22 +00:00
|
|
|
// Emit the label.
|
2009-06-29 23:43:14 +00:00
|
|
|
Out.EmitLabel(Sym);
|
|
|
|
|
2010-05-23 18:36:34 +00:00
|
|
|
// Consume any end of statement token, if present, to avoid spurious
|
|
|
|
// AddBlankLine calls().
|
|
|
|
if (Lexer.is(AsmToken::EndOfStatement)) {
|
|
|
|
Lex();
|
|
|
|
if (Lexer.is(AsmToken::Eof))
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2009-06-21 20:54:55 +00:00
|
|
|
return ParseStatement();
|
2009-06-29 23:43:14 +00:00
|
|
|
}
|
2009-06-25 21:56:11 +00:00
|
|
|
|
2009-07-28 16:08:33 +00:00
|
|
|
case AsmToken::Equal:
|
2009-06-25 21:56:11 +00:00
|
|
|
// identifier '=' ... -> assignment statement
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-25 21:56:11 +00:00
|
|
|
|
2009-08-31 08:09:09 +00:00
|
|
|
return ParseAssignment(IDVal);
|
2009-06-25 21:56:11 +00:00
|
|
|
|
|
|
|
default: // Normal instruction or directive.
|
|
|
|
break;
|
2009-06-21 20:54:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
// Otherwise, we have a normal instruction or directive.
|
2009-06-22 01:29:09 +00:00
|
|
|
if (IDVal[0] == '.') {
|
2009-06-25 21:56:11 +00:00
|
|
|
// Assembler features
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".set")
|
2009-06-25 21:56:11 +00:00
|
|
|
return ParseDirectiveSet();
|
|
|
|
|
2009-06-24 23:30:00 +00:00
|
|
|
// Data directives
|
|
|
|
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".ascii")
|
2009-06-24 23:30:00 +00:00
|
|
|
return ParseDirectiveAscii(false);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".asciz")
|
2009-06-24 23:30:00 +00:00
|
|
|
return ParseDirectiveAscii(true);
|
|
|
|
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".byte")
|
2009-06-24 23:30:00 +00:00
|
|
|
return ParseDirectiveValue(1);
|
2009-09-10 20:51:44 +00:00
|
|
|
if (IDVal == ".short")
|
2009-06-24 23:30:00 +00:00
|
|
|
return ParseDirectiveValue(2);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".long")
|
2009-06-24 23:30:00 +00:00
|
|
|
return ParseDirectiveValue(4);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".quad")
|
2009-06-24 23:30:00 +00:00
|
|
|
return ParseDirectiveValue(8);
|
2009-06-29 23:46:59 +00:00
|
|
|
|
|
|
|
// FIXME: Target hooks for IsPow2.
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".align")
|
2009-06-29 23:46:59 +00:00
|
|
|
return ParseDirectiveAlign(/*IsPow2=*/true, /*ExprSize=*/1);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".align32")
|
2009-06-29 23:46:59 +00:00
|
|
|
return ParseDirectiveAlign(/*IsPow2=*/true, /*ExprSize=*/4);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".balign")
|
2009-06-29 23:46:59 +00:00
|
|
|
return ParseDirectiveAlign(/*IsPow2=*/false, /*ExprSize=*/1);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".balignw")
|
2009-06-29 23:46:59 +00:00
|
|
|
return ParseDirectiveAlign(/*IsPow2=*/false, /*ExprSize=*/2);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".balignl")
|
2009-06-29 23:46:59 +00:00
|
|
|
return ParseDirectiveAlign(/*IsPow2=*/false, /*ExprSize=*/4);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".p2align")
|
2009-06-29 23:46:59 +00:00
|
|
|
return ParseDirectiveAlign(/*IsPow2=*/true, /*ExprSize=*/1);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".p2alignw")
|
2009-06-29 23:46:59 +00:00
|
|
|
return ParseDirectiveAlign(/*IsPow2=*/true, /*ExprSize=*/2);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".p2alignl")
|
2009-06-29 23:46:59 +00:00
|
|
|
return ParseDirectiveAlign(/*IsPow2=*/true, /*ExprSize=*/4);
|
|
|
|
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".org")
|
2009-06-25 22:44:51 +00:00
|
|
|
return ParseDirectiveOrg();
|
2009-06-29 23:46:59 +00:00
|
|
|
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".fill")
|
2009-06-29 23:46:59 +00:00
|
|
|
return ParseDirectiveFill();
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".space")
|
2009-06-24 23:30:00 +00:00
|
|
|
return ParseDirectiveSpace();
|
|
|
|
|
2009-06-30 00:33:19 +00:00
|
|
|
// Symbol attribute directives
|
2009-08-11 04:24:50 +00:00
|
|
|
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".globl" || IDVal == ".global")
|
2010-01-23 06:39:22 +00:00
|
|
|
return ParseDirectiveSymbolAttribute(MCSA_Global);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".hidden")
|
2010-01-23 06:39:22 +00:00
|
|
|
return ParseDirectiveSymbolAttribute(MCSA_Hidden);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".indirect_symbol")
|
2010-01-23 06:39:22 +00:00
|
|
|
return ParseDirectiveSymbolAttribute(MCSA_IndirectSymbol);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".internal")
|
2010-01-23 06:39:22 +00:00
|
|
|
return ParseDirectiveSymbolAttribute(MCSA_Internal);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".lazy_reference")
|
2010-01-23 06:39:22 +00:00
|
|
|
return ParseDirectiveSymbolAttribute(MCSA_LazyReference);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".no_dead_strip")
|
2010-01-23 06:39:22 +00:00
|
|
|
return ParseDirectiveSymbolAttribute(MCSA_NoDeadStrip);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".private_extern")
|
2010-01-23 06:39:22 +00:00
|
|
|
return ParseDirectiveSymbolAttribute(MCSA_PrivateExtern);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".protected")
|
2010-01-23 06:39:22 +00:00
|
|
|
return ParseDirectiveSymbolAttribute(MCSA_Protected);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".reference")
|
2010-01-23 06:39:22 +00:00
|
|
|
return ParseDirectiveSymbolAttribute(MCSA_Reference);
|
2010-05-21 11:36:59 +00:00
|
|
|
if (IDVal == ".type")
|
|
|
|
return ParseDirectiveELFType();
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".weak")
|
2010-01-23 06:39:22 +00:00
|
|
|
return ParseDirectiveSymbolAttribute(MCSA_Weak);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".weak_definition")
|
2010-01-23 06:39:22 +00:00
|
|
|
return ParseDirectiveSymbolAttribute(MCSA_WeakDefinition);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".weak_reference")
|
2010-01-23 06:39:22 +00:00
|
|
|
return ParseDirectiveSymbolAttribute(MCSA_WeakReference);
|
2010-07-08 17:22:42 +00:00
|
|
|
if (IDVal == ".weak_def_can_be_hidden")
|
|
|
|
return ParseDirectiveSymbolAttribute(MCSA_WeakDefAutoPrivate);
|
2009-06-30 00:33:19 +00:00
|
|
|
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".comm")
|
2009-07-09 17:25:12 +00:00
|
|
|
return ParseDirectiveComm(/*IsLocal=*/false);
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".lcomm")
|
2009-07-09 17:25:12 +00:00
|
|
|
return ParseDirectiveComm(/*IsLocal=*/true);
|
2009-07-07 20:30:46 +00:00
|
|
|
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".abort")
|
2009-07-13 23:15:14 +00:00
|
|
|
return ParseDirectiveAbort();
|
2009-07-27 21:49:56 +00:00
|
|
|
if (IDVal == ".include")
|
2009-07-14 23:21:55 +00:00
|
|
|
return ParseDirectiveInclude();
|
2009-07-13 21:03:15 +00:00
|
|
|
|
2010-07-12 17:54:38 +00:00
|
|
|
// Look up the handler in the handler table.
|
|
|
|
std::pair<MCAsmParserExtension*, DirectiveHandler> Handler =
|
|
|
|
DirectiveMap.lookup(IDVal);
|
|
|
|
if (Handler.first)
|
|
|
|
return (Handler.first->*Handler.second)(IDVal, IDLoc);
|
|
|
|
|
2009-09-10 20:51:44 +00:00
|
|
|
// Target hook for parsing target specific directives.
|
|
|
|
if (!getTargetParser().ParseDirective(ID))
|
|
|
|
return false;
|
|
|
|
|
2009-06-30 00:49:23 +00:00
|
|
|
Warning(IDLoc, "ignoring directive for now");
|
2009-06-22 01:29:09 +00:00
|
|
|
EatToEndOfStatement();
|
|
|
|
return false;
|
|
|
|
}
|
2009-06-21 20:54:55 +00:00
|
|
|
|
2010-05-19 23:34:33 +00:00
|
|
|
// 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]));
|
|
|
|
|
2010-01-14 22:21:20 +00:00
|
|
|
SmallVector<MCParsedAsmOperand*, 8> ParsedOperands;
|
2010-05-19 23:34:33 +00:00
|
|
|
bool HadError = getTargetParser().ParseInstruction(Opcode.str(), IDLoc,
|
2010-05-04 00:33:07 +00:00
|
|
|
ParsedOperands);
|
|
|
|
if (!HadError && Lexer.isNot(AsmToken::EndOfStatement))
|
|
|
|
HadError = TokError("unexpected token in argument list");
|
|
|
|
|
|
|
|
// If parsing succeeded, match the instruction.
|
|
|
|
if (!HadError) {
|
|
|
|
MCInst Inst;
|
|
|
|
if (!getTargetParser().MatchInstruction(ParsedOperands, Inst)) {
|
|
|
|
// Emit the instruction on success.
|
|
|
|
Out.EmitInstruction(Inst);
|
|
|
|
} else {
|
|
|
|
// Otherwise emit a diagnostic about the match failure and set the error
|
|
|
|
// flag.
|
|
|
|
//
|
|
|
|
// FIXME: We should give nicer diagnostics about the exact failure.
|
|
|
|
Error(IDLoc, "unrecognized instruction");
|
|
|
|
HadError = true;
|
|
|
|
}
|
|
|
|
}
|
2010-01-14 22:21:20 +00:00
|
|
|
|
2010-05-04 00:33:07 +00:00
|
|
|
// If there was no error, consume the end-of-statement token. Otherwise this
|
|
|
|
// will be done by our caller.
|
|
|
|
if (!HadError)
|
|
|
|
Lex();
|
2010-01-14 22:21:20 +00:00
|
|
|
|
|
|
|
// Free any parsed operands.
|
|
|
|
for (unsigned i = 0, e = ParsedOperands.size(); i != e; ++i)
|
|
|
|
delete ParsedOperands[i];
|
|
|
|
|
2010-05-04 00:33:07 +00:00
|
|
|
return HadError;
|
2009-06-21 20:16:42 +00:00
|
|
|
}
|
2009-06-24 04:43:34 +00:00
|
|
|
|
2009-08-31 08:09:09 +00:00
|
|
|
bool AsmParser::ParseAssignment(const StringRef &Name) {
|
2009-06-29 23:43:14 +00:00
|
|
|
// FIXME: Use better location, we should use proper tokens.
|
|
|
|
SMLoc EqualLoc = Lexer.getLoc();
|
|
|
|
|
2009-08-31 08:09:28 +00:00
|
|
|
const MCExpr *Value;
|
|
|
|
if (ParseExpression(Value))
|
2009-06-25 21:56:11 +00:00
|
|
|
return true;
|
|
|
|
|
2009-07-28 16:08:33 +00:00
|
|
|
if (Lexer.isNot(AsmToken::EndOfStatement))
|
2009-06-25 21:56:11 +00:00
|
|
|
return TokError("unexpected token in assignment");
|
|
|
|
|
|
|
|
// Eat the end of statement marker.
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-25 21:56:11 +00:00
|
|
|
|
2009-10-16 01:57:39 +00:00
|
|
|
// Validate that the LHS is allowed to be a variable (either it has not been
|
|
|
|
// used as a symbol, or it is an absolute symbol).
|
|
|
|
MCSymbol *Sym = getContext().LookupSymbol(Name);
|
|
|
|
if (Sym) {
|
|
|
|
// Diagnose assignment to a label.
|
|
|
|
//
|
|
|
|
// FIXME: Diagnostics. Note the location of the definition as a label.
|
|
|
|
// FIXME: Diagnose assignment to protected identifier (e.g., register name).
|
2010-05-17 17:46:23 +00:00
|
|
|
if (Sym->isUndefined() && !Sym->isUsedInExpr())
|
|
|
|
; // Allow redefinitions of undefined symbols only used in directives.
|
|
|
|
else if (!Sym->isUndefined() && !Sym->isAbsolute())
|
2009-10-16 01:57:39 +00:00
|
|
|
return Error(EqualLoc, "redefinition of '" + Name + "'");
|
|
|
|
else if (!Sym->isVariable())
|
|
|
|
return Error(EqualLoc, "invalid assignment to '" + Name + "'");
|
2010-05-05 17:41:00 +00:00
|
|
|
else if (!isa<MCConstantExpr>(Sym->getVariableValue()))
|
2009-10-16 01:57:39 +00:00
|
|
|
return Error(EqualLoc, "invalid reassignment of non-absolute variable '" +
|
|
|
|
Name + "'");
|
|
|
|
} else
|
2010-07-12 19:52:10 +00:00
|
|
|
Sym = getContext().GetOrCreateSymbol(Name);
|
2009-10-16 01:57:39 +00:00
|
|
|
|
2009-06-25 21:56:11 +00:00
|
|
|
// FIXME: Handle '.'.
|
2009-06-29 23:43:14 +00:00
|
|
|
|
2010-05-17 17:46:23 +00:00
|
|
|
Sym->setUsedInExpr(true);
|
|
|
|
|
2009-06-29 23:43:14 +00:00
|
|
|
// Do the assignment.
|
2009-08-31 08:09:09 +00:00
|
|
|
Out.EmitAssignment(Sym, Value);
|
2009-06-25 21:56:11 +00:00
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2009-08-01 00:48:30 +00:00
|
|
|
/// ParseIdentifier:
|
|
|
|
/// ::= identifier
|
|
|
|
/// ::= string
|
|
|
|
bool AsmParser::ParseIdentifier(StringRef &Res) {
|
|
|
|
if (Lexer.isNot(AsmToken::Identifier) &&
|
|
|
|
Lexer.isNot(AsmToken::String))
|
|
|
|
return true;
|
|
|
|
|
2010-01-19 21:44:56 +00:00
|
|
|
Res = getTok().getIdentifier();
|
2009-08-01 00:48:30 +00:00
|
|
|
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex(); // Consume the identifier token.
|
2009-08-01 00:48:30 +00:00
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2009-06-25 21:56:11 +00:00
|
|
|
/// ParseDirectiveSet:
|
|
|
|
/// ::= .set identifier ',' expression
|
|
|
|
bool AsmParser::ParseDirectiveSet() {
|
2009-08-01 00:48:30 +00:00
|
|
|
StringRef Name;
|
2009-06-25 21:56:11 +00:00
|
|
|
|
2009-08-01 00:48:30 +00:00
|
|
|
if (ParseIdentifier(Name))
|
|
|
|
return TokError("expected identifier after '.set' directive");
|
2009-06-25 21:56:11 +00:00
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::Comma))
|
2009-06-25 21:56:11 +00:00
|
|
|
return TokError("unexpected token in '.set'");
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-25 21:56:11 +00:00
|
|
|
|
2009-08-31 08:09:09 +00:00
|
|
|
return ParseAssignment(Name);
|
2009-06-25 21:56:11 +00:00
|
|
|
}
|
|
|
|
|
2010-07-12 20:08:04 +00:00
|
|
|
bool ELFAsmParser::ParseSectionSwitch(StringRef Section, unsigned Type,
|
|
|
|
unsigned Flags, SectionKind Kind) {
|
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
|
|
|
return TokError("unexpected token in section switching directive");
|
|
|
|
Lex();
|
|
|
|
|
|
|
|
getStreamer().SwitchSection(getContext().getELFSection(
|
|
|
|
Section, Type, Flags, Kind));
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2009-08-14 18:19:52 +00:00
|
|
|
bool AsmParser::ParseEscapedString(std::string &Data) {
|
2010-07-12 18:03:11 +00:00
|
|
|
assert(getLexer().is(AsmToken::String) && "Unexpected current token!");
|
2009-08-14 18:19:52 +00:00
|
|
|
|
|
|
|
Data = "";
|
2010-01-19 21:44:56 +00:00
|
|
|
StringRef Str = getTok().getStringContents();
|
2009-08-14 18:19:52 +00:00
|
|
|
for (unsigned i = 0, e = Str.size(); i != e; ++i) {
|
|
|
|
if (Str[i] != '\\') {
|
|
|
|
Data += Str[i];
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Recognize escaped characters. Note that this escape semantics currently
|
|
|
|
// loosely follows Darwin 'as'. Notably, it doesn't support hex escapes.
|
|
|
|
++i;
|
|
|
|
if (i == e)
|
|
|
|
return TokError("unexpected backslash at end of string");
|
|
|
|
|
|
|
|
// Recognize octal sequences.
|
|
|
|
if ((unsigned) (Str[i] - '0') <= 7) {
|
|
|
|
// Consume up to three octal characters.
|
|
|
|
unsigned Value = Str[i] - '0';
|
|
|
|
|
|
|
|
if (i + 1 != e && ((unsigned) (Str[i + 1] - '0')) <= 7) {
|
|
|
|
++i;
|
|
|
|
Value = Value * 8 + (Str[i] - '0');
|
|
|
|
|
|
|
|
if (i + 1 != e && ((unsigned) (Str[i + 1] - '0')) <= 7) {
|
|
|
|
++i;
|
|
|
|
Value = Value * 8 + (Str[i] - '0');
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (Value > 255)
|
|
|
|
return TokError("invalid octal escape sequence (out of range)");
|
|
|
|
|
|
|
|
Data += (unsigned char) Value;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Otherwise recognize individual escapes.
|
|
|
|
switch (Str[i]) {
|
|
|
|
default:
|
|
|
|
// Just reject invalid escape sequences for now.
|
|
|
|
return TokError("invalid escape sequence (unrecognized character)");
|
|
|
|
|
|
|
|
case 'b': Data += '\b'; break;
|
|
|
|
case 'f': Data += '\f'; break;
|
|
|
|
case 'n': Data += '\n'; break;
|
|
|
|
case 'r': Data += '\r'; break;
|
|
|
|
case 't': Data += '\t'; break;
|
|
|
|
case '"': Data += '"'; break;
|
|
|
|
case '\\': Data += '\\'; break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2009-06-24 23:30:00 +00:00
|
|
|
/// ParseDirectiveAscii:
|
2009-06-29 20:37:27 +00:00
|
|
|
/// ::= ( .ascii | .asciz ) [ "string" ( , "string" )* ]
|
2009-06-24 23:30:00 +00:00
|
|
|
bool AsmParser::ParseDirectiveAscii(bool ZeroTerminated) {
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
2009-06-24 23:30:00 +00:00
|
|
|
for (;;) {
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::String))
|
2009-06-24 23:30:00 +00:00
|
|
|
return TokError("expected string in '.ascii' or '.asciz' directive");
|
2010-07-12 18:03:11 +00:00
|
|
|
|
2009-08-14 18:19:52 +00:00
|
|
|
std::string Data;
|
|
|
|
if (ParseEscapedString(Data))
|
|
|
|
return true;
|
2010-07-12 18:03:11 +00:00
|
|
|
|
|
|
|
getStreamer().EmitBytes(Data, DEFAULT_ADDRSPACE);
|
2009-06-24 23:30:00 +00:00
|
|
|
if (ZeroTerminated)
|
2010-07-12 18:03:11 +00:00
|
|
|
getStreamer().EmitBytes(StringRef("\0", 1), DEFAULT_ADDRSPACE);
|
|
|
|
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2010-07-12 18:03:11 +00:00
|
|
|
|
|
|
|
if (getLexer().is(AsmToken::EndOfStatement))
|
2009-06-24 23:30:00 +00:00
|
|
|
break;
|
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::Comma))
|
2009-06-24 23:30:00 +00:00
|
|
|
return TokError("unexpected token in '.ascii' or '.asciz' directive");
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-24 23:30:00 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-24 23:30:00 +00:00
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
/// ParseDirectiveValue
|
|
|
|
/// ::= (.byte | .short | ... ) [ expression (, expression)* ]
|
|
|
|
bool AsmParser::ParseDirectiveValue(unsigned Size) {
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
2009-06-24 23:30:00 +00:00
|
|
|
for (;;) {
|
2009-08-31 08:09:28 +00:00
|
|
|
const MCExpr *Value;
|
2010-07-12 18:03:11 +00:00
|
|
|
SMLoc ATTRIBUTE_UNUSED StartLoc = getLexer().getLoc();
|
2009-08-31 08:09:28 +00:00
|
|
|
if (ParseExpression(Value))
|
2009-06-24 23:30:00 +00:00
|
|
|
return true;
|
|
|
|
|
2010-05-23 18:36:38 +00:00
|
|
|
// Special case constant expressions to match code generator.
|
|
|
|
if (const MCConstantExpr *MCE = dyn_cast<MCConstantExpr>(Value))
|
2010-07-12 18:03:11 +00:00
|
|
|
getStreamer().EmitIntValue(MCE->getValue(), Size, DEFAULT_ADDRSPACE);
|
2010-05-23 18:36:38 +00:00
|
|
|
else
|
2010-07-12 18:03:11 +00:00
|
|
|
getStreamer().EmitValue(Value, Size, DEFAULT_ADDRSPACE);
|
2009-06-24 23:30:00 +00:00
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().is(AsmToken::EndOfStatement))
|
2009-06-24 23:30:00 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
// FIXME: Improve diagnostic.
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::Comma))
|
2009-06-24 23:30:00 +00:00
|
|
|
return TokError("unexpected token in directive");
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-24 23:30:00 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-24 23:30:00 +00:00
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
/// ParseDirectiveSpace
|
|
|
|
/// ::= .space expression [ , expression ]
|
|
|
|
bool AsmParser::ParseDirectiveSpace() {
|
|
|
|
int64_t NumBytes;
|
2009-06-29 20:37:27 +00:00
|
|
|
if (ParseAbsoluteExpression(NumBytes))
|
2009-06-24 23:30:00 +00:00
|
|
|
return true;
|
|
|
|
|
|
|
|
int64_t FillExpr = 0;
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
|
|
if (getLexer().isNot(AsmToken::Comma))
|
2009-06-24 23:30:00 +00:00
|
|
|
return TokError("unexpected token in '.space' directive");
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-24 23:30:00 +00:00
|
|
|
|
2009-06-29 20:37:27 +00:00
|
|
|
if (ParseAbsoluteExpression(FillExpr))
|
2009-06-24 23:30:00 +00:00
|
|
|
return true;
|
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
2009-06-24 23:30:00 +00:00
|
|
|
return TokError("unexpected token in '.space' directive");
|
|
|
|
}
|
|
|
|
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-24 23:30:00 +00:00
|
|
|
|
|
|
|
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.
|
2010-07-12 18:03:11 +00:00
|
|
|
getStreamer().EmitFill(NumBytes, FillExpr, DEFAULT_ADDRSPACE);
|
2009-06-24 23:30:00 +00:00
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
/// ParseDirectiveFill
|
|
|
|
/// ::= .fill expression , expression , expression
|
|
|
|
bool AsmParser::ParseDirectiveFill() {
|
|
|
|
int64_t NumValues;
|
2009-06-29 20:37:27 +00:00
|
|
|
if (ParseAbsoluteExpression(NumValues))
|
2009-06-24 23:30:00 +00:00
|
|
|
return true;
|
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::Comma))
|
2009-06-24 23:30:00 +00:00
|
|
|
return TokError("unexpected token in '.fill' directive");
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-24 23:30:00 +00:00
|
|
|
|
|
|
|
int64_t FillSize;
|
2009-06-29 20:37:27 +00:00
|
|
|
if (ParseAbsoluteExpression(FillSize))
|
2009-06-24 23:30:00 +00:00
|
|
|
return true;
|
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::Comma))
|
2009-06-24 23:30:00 +00:00
|
|
|
return TokError("unexpected token in '.fill' directive");
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-24 23:30:00 +00:00
|
|
|
|
|
|
|
int64_t FillExpr;
|
2009-06-29 20:37:27 +00:00
|
|
|
if (ParseAbsoluteExpression(FillExpr))
|
2009-06-24 23:30:00 +00:00
|
|
|
return true;
|
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
2009-06-24 23:30:00 +00:00
|
|
|
return TokError("unexpected token in '.fill' directive");
|
|
|
|
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-24 23:30:00 +00:00
|
|
|
|
2009-08-21 15:43:35 +00:00
|
|
|
if (FillSize != 1 && FillSize != 2 && FillSize != 4 && FillSize != 8)
|
|
|
|
return TokError("invalid '.fill' size, expected 1, 2, 4, or 8");
|
2009-06-24 23:30:00 +00:00
|
|
|
|
|
|
|
for (uint64_t i = 0, e = NumValues; i != e; ++i)
|
2010-07-12 18:03:11 +00:00
|
|
|
getStreamer().EmitIntValue(FillExpr, FillSize, DEFAULT_ADDRSPACE);
|
2009-06-24 23:30:00 +00:00
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
2009-06-25 22:44:51 +00:00
|
|
|
|
|
|
|
/// ParseDirectiveOrg
|
|
|
|
/// ::= .org expression [ , expression ]
|
|
|
|
bool AsmParser::ParseDirectiveOrg() {
|
2009-08-31 08:09:28 +00:00
|
|
|
const MCExpr *Offset;
|
|
|
|
if (ParseExpression(Offset))
|
2009-06-25 22:44:51 +00:00
|
|
|
return true;
|
|
|
|
|
|
|
|
// Parse optional fill expression.
|
|
|
|
int64_t FillExpr = 0;
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
|
|
if (getLexer().isNot(AsmToken::Comma))
|
2009-06-25 22:44:51 +00:00
|
|
|
return TokError("unexpected token in '.org' directive");
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-25 22:44:51 +00:00
|
|
|
|
2009-06-29 20:37:27 +00:00
|
|
|
if (ParseAbsoluteExpression(FillExpr))
|
2009-06-25 22:44:51 +00:00
|
|
|
return true;
|
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
2009-06-25 22:44:51 +00:00
|
|
|
return TokError("unexpected token in '.org' directive");
|
|
|
|
}
|
|
|
|
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-30 02:10:03 +00:00
|
|
|
|
|
|
|
// FIXME: Only limited forms of relocatable expressions are accepted here, it
|
|
|
|
// has to be relative to the current section.
|
2010-07-12 18:03:11 +00:00
|
|
|
getStreamer().EmitValueToOffset(Offset, FillExpr);
|
2009-06-25 22:44:51 +00:00
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
2009-06-29 23:46:59 +00:00
|
|
|
|
|
|
|
/// ParseDirectiveAlign
|
|
|
|
/// ::= {.align, ...} expression [ , expression [ , expression ]]
|
|
|
|
bool AsmParser::ParseDirectiveAlign(bool IsPow2, unsigned ValueSize) {
|
2010-07-12 18:03:11 +00:00
|
|
|
SMLoc AlignmentLoc = getLexer().getLoc();
|
2009-06-29 23:46:59 +00:00
|
|
|
int64_t Alignment;
|
|
|
|
if (ParseAbsoluteExpression(Alignment))
|
|
|
|
return true;
|
|
|
|
|
|
|
|
SMLoc MaxBytesLoc;
|
|
|
|
bool HasFillExpr = false;
|
|
|
|
int64_t FillExpr = 0;
|
|
|
|
int64_t MaxBytesToFill = 0;
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
|
|
if (getLexer().isNot(AsmToken::Comma))
|
2009-06-29 23:46:59 +00:00
|
|
|
return TokError("unexpected token in directive");
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-29 23:46:59 +00:00
|
|
|
|
|
|
|
// The fill expression can be omitted while specifying a maximum number of
|
|
|
|
// alignment bytes, e.g:
|
|
|
|
// .align 3,,4
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::Comma)) {
|
2009-06-29 23:46:59 +00:00
|
|
|
HasFillExpr = true;
|
|
|
|
if (ParseAbsoluteExpression(FillExpr))
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
|
|
if (getLexer().isNot(AsmToken::Comma))
|
2009-06-29 23:46:59 +00:00
|
|
|
return TokError("unexpected token in directive");
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-29 23:46:59 +00:00
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
MaxBytesLoc = getLexer().getLoc();
|
2009-06-29 23:46:59 +00:00
|
|
|
if (ParseAbsoluteExpression(MaxBytesToFill))
|
|
|
|
return true;
|
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
2009-06-29 23:46:59 +00:00
|
|
|
return TokError("unexpected token in directive");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-29 23:46:59 +00:00
|
|
|
|
2010-05-17 21:54:30 +00:00
|
|
|
if (!HasFillExpr)
|
2009-06-29 23:46:59 +00:00
|
|
|
FillExpr = 0;
|
|
|
|
|
|
|
|
// Compute alignment in bytes.
|
|
|
|
if (IsPow2) {
|
|
|
|
// FIXME: Diagnose overflow.
|
2009-08-26 09:16:34 +00:00
|
|
|
if (Alignment >= 32) {
|
|
|
|
Error(AlignmentLoc, "invalid alignment value");
|
|
|
|
Alignment = 31;
|
|
|
|
}
|
|
|
|
|
2009-09-06 09:35:10 +00:00
|
|
|
Alignment = 1ULL << Alignment;
|
2009-06-29 23:46:59 +00:00
|
|
|
}
|
|
|
|
|
2009-08-26 09:16:34 +00:00
|
|
|
// Diagnose non-sensical max bytes to align.
|
2009-06-29 23:46:59 +00:00
|
|
|
if (MaxBytesLoc.isValid()) {
|
|
|
|
if (MaxBytesToFill < 1) {
|
2009-08-26 09:16:34 +00:00
|
|
|
Error(MaxBytesLoc, "alignment directive can never be satisfied in this "
|
|
|
|
"many bytes, ignoring maximum bytes expression");
|
2009-08-21 23:01:53 +00:00
|
|
|
MaxBytesToFill = 0;
|
2009-06-29 23:46:59 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (MaxBytesToFill >= Alignment) {
|
2009-06-30 00:49:23 +00:00
|
|
|
Warning(MaxBytesLoc, "maximum bytes expression exceeds alignment and "
|
|
|
|
"has no effect");
|
2009-06-29 23:46:59 +00:00
|
|
|
MaxBytesToFill = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-05-17 21:54:30 +00:00
|
|
|
// Check whether we should use optimal code alignment for this .align
|
|
|
|
// directive.
|
|
|
|
//
|
|
|
|
// FIXME: This should be using a target hook.
|
|
|
|
bool UseCodeAlign = false;
|
|
|
|
if (const MCSectionMachO *S = dyn_cast<MCSectionMachO>(
|
2010-07-12 18:03:11 +00:00
|
|
|
getStreamer().getCurrentSection()))
|
2010-05-17 21:54:30 +00:00
|
|
|
UseCodeAlign = S->hasAttribute(MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS);
|
|
|
|
if ((!HasFillExpr || Lexer.getMAI().getTextAlignFillValue() == FillExpr) &&
|
|
|
|
ValueSize == 1 && UseCodeAlign) {
|
2010-07-12 18:03:11 +00:00
|
|
|
getStreamer().EmitCodeAlignment(Alignment, MaxBytesToFill);
|
2010-05-17 21:54:30 +00:00
|
|
|
} else {
|
2010-02-25 18:46:04 +00:00
|
|
|
// FIXME: Target specific behavior about how the "extra" bytes are filled.
|
2010-07-12 18:03:11 +00:00
|
|
|
getStreamer().EmitValueToAlignment(Alignment, FillExpr, ValueSize, MaxBytesToFill);
|
2010-05-17 21:54:30 +00:00
|
|
|
}
|
2009-06-29 23:46:59 +00:00
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2009-06-30 00:33:19 +00:00
|
|
|
/// ParseDirectiveSymbolAttribute
|
|
|
|
/// ::= { ".globl", ".weak", ... } [ identifier ( , identifier )* ]
|
2010-01-23 06:39:22 +00:00
|
|
|
bool AsmParser::ParseDirectiveSymbolAttribute(MCSymbolAttr Attr) {
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
2009-06-30 00:33:19 +00:00
|
|
|
for (;;) {
|
2009-08-01 00:48:30 +00:00
|
|
|
StringRef Name;
|
|
|
|
|
|
|
|
if (ParseIdentifier(Name))
|
2009-06-30 00:33:19 +00:00
|
|
|
return TokError("expected identifier in directive");
|
|
|
|
|
2010-07-12 19:52:10 +00:00
|
|
|
MCSymbol *Sym = getContext().GetOrCreateSymbol(Name);
|
2009-06-30 00:33:19 +00:00
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
getStreamer().EmitSymbolAttribute(Sym, Attr);
|
2009-06-30 00:33:19 +00:00
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().is(AsmToken::EndOfStatement))
|
2009-06-30 00:33:19 +00:00
|
|
|
break;
|
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::Comma))
|
2009-06-30 00:33:19 +00:00
|
|
|
return TokError("unexpected token in directive");
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-30 00:33:19 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-06-30 00:33:19 +00:00
|
|
|
return false;
|
|
|
|
}
|
2009-07-07 20:30:46 +00:00
|
|
|
|
2010-05-21 11:36:59 +00:00
|
|
|
/// ParseDirectiveELFType
|
|
|
|
/// ::= .type identifier , @attribute
|
|
|
|
bool AsmParser::ParseDirectiveELFType() {
|
|
|
|
StringRef Name;
|
|
|
|
if (ParseIdentifier(Name))
|
|
|
|
return TokError("expected identifier in directive");
|
|
|
|
|
|
|
|
// Handle the identifier as the key symbol.
|
2010-07-12 19:52:10 +00:00
|
|
|
MCSymbol *Sym = getContext().GetOrCreateSymbol(Name);
|
2010-05-21 11:36:59 +00:00
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::Comma))
|
2010-05-21 11:36:59 +00:00
|
|
|
return TokError("unexpected token in '.type' directive");
|
|
|
|
Lex();
|
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::At))
|
2010-05-21 11:36:59 +00:00
|
|
|
return TokError("expected '@' before type");
|
|
|
|
Lex();
|
|
|
|
|
|
|
|
StringRef Type;
|
|
|
|
SMLoc TypeLoc;
|
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
TypeLoc = getLexer().getLoc();
|
2010-05-21 11:36:59 +00:00
|
|
|
if (ParseIdentifier(Type))
|
|
|
|
return TokError("expected symbol type in directive");
|
|
|
|
|
|
|
|
MCSymbolAttr Attr = StringSwitch<MCSymbolAttr>(Type)
|
|
|
|
.Case("function", MCSA_ELF_TypeFunction)
|
|
|
|
.Case("object", MCSA_ELF_TypeObject)
|
|
|
|
.Case("tls_object", MCSA_ELF_TypeTLS)
|
|
|
|
.Case("common", MCSA_ELF_TypeCommon)
|
|
|
|
.Case("notype", MCSA_ELF_TypeNoType)
|
|
|
|
.Default(MCSA_Invalid);
|
|
|
|
|
|
|
|
if (Attr == MCSA_Invalid)
|
|
|
|
return Error(TypeLoc, "unsupported attribute in '.type' directive");
|
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
2010-05-21 11:36:59 +00:00
|
|
|
return TokError("unexpected token in '.type' directive");
|
|
|
|
|
|
|
|
Lex();
|
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
getStreamer().EmitSymbolAttribute(Sym, Attr);
|
2010-05-21 11:36:59 +00:00
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2009-07-07 20:30:46 +00:00
|
|
|
/// ParseDirectiveComm
|
2009-07-09 17:25:12 +00:00
|
|
|
/// ::= ( .comm | .lcomm ) identifier , size_expression [ , align_expression ]
|
|
|
|
bool AsmParser::ParseDirectiveComm(bool IsLocal) {
|
2010-07-12 18:03:11 +00:00
|
|
|
SMLoc IDLoc = getLexer().getLoc();
|
2009-08-01 00:48:30 +00:00
|
|
|
StringRef Name;
|
|
|
|
if (ParseIdentifier(Name))
|
2009-07-07 20:30:46 +00:00
|
|
|
return TokError("expected identifier in directive");
|
|
|
|
|
2009-07-31 21:55:09 +00:00
|
|
|
// Handle the identifier as the key symbol.
|
2010-07-12 19:52:10 +00:00
|
|
|
MCSymbol *Sym = getContext().GetOrCreateSymbol(Name);
|
2009-07-07 20:30:46 +00:00
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::Comma))
|
2009-07-07 20:30:46 +00:00
|
|
|
return TokError("unexpected token in directive");
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-07-07 20:30:46 +00:00
|
|
|
|
|
|
|
int64_t Size;
|
2010-07-12 18:03:11 +00:00
|
|
|
SMLoc SizeLoc = getLexer().getLoc();
|
2009-07-07 20:30:46 +00:00
|
|
|
if (ParseAbsoluteExpression(Size))
|
|
|
|
return true;
|
|
|
|
|
|
|
|
int64_t Pow2Alignment = 0;
|
|
|
|
SMLoc Pow2AlignmentLoc;
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().is(AsmToken::Comma)) {
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2010-07-12 18:03:11 +00:00
|
|
|
Pow2AlignmentLoc = getLexer().getLoc();
|
2009-07-07 20:30:46 +00:00
|
|
|
if (ParseAbsoluteExpression(Pow2Alignment))
|
|
|
|
return true;
|
2010-01-19 06:22:22 +00:00
|
|
|
|
|
|
|
// 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);
|
|
|
|
}
|
2009-07-07 20:30:46 +00:00
|
|
|
}
|
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
2009-07-09 17:25:12 +00:00
|
|
|
return TokError("unexpected token in '.comm' or '.lcomm' directive");
|
2009-07-07 20:30:46 +00:00
|
|
|
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-07-07 20:30:46 +00:00
|
|
|
|
2009-07-09 17:25:12 +00:00
|
|
|
// 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.
|
2009-07-07 20:30:46 +00:00
|
|
|
if (Size < 0)
|
2009-07-09 17:25:12 +00:00
|
|
|
return Error(SizeLoc, "invalid '.comm' or '.lcomm' directive size, can't "
|
|
|
|
"be less than zero");
|
2009-07-07 20:30:46 +00:00
|
|
|
|
2010-05-14 01:38:54 +00:00
|
|
|
// NOTE: The alignment in the directive is a power of 2 value, the assembler
|
2009-07-07 20:30:46 +00:00
|
|
|
// may internally end up wanting an alignment in bytes.
|
|
|
|
// FIXME: Diagnose overflow.
|
|
|
|
if (Pow2Alignment < 0)
|
2009-07-09 17:25:12 +00:00
|
|
|
return Error(Pow2AlignmentLoc, "invalid '.comm' or '.lcomm' directive "
|
|
|
|
"alignment, can't be less than zero");
|
2009-07-07 20:30:46 +00:00
|
|
|
|
2009-08-22 07:22:36 +00:00
|
|
|
if (!Sym->isUndefined())
|
2009-07-07 20:30:46 +00:00
|
|
|
return Error(IDLoc, "invalid symbol redefinition");
|
|
|
|
|
2009-08-30 06:17:16 +00:00
|
|
|
// '.lcomm' is equivalent to '.zerofill'.
|
2009-07-09 17:25:12 +00:00
|
|
|
// Create the Symbol as a common or local common with Size and Pow2Alignment
|
2009-08-30 06:17:16 +00:00
|
|
|
if (IsLocal) {
|
2010-07-12 18:03:11 +00:00
|
|
|
getStreamer().EmitZerofill(Ctx.getMachOSection(
|
|
|
|
"__DATA", "__bss", MCSectionMachO::S_ZEROFILL,
|
|
|
|
0, SectionKind::getBSS()),
|
|
|
|
Sym, Size, 1 << Pow2Alignment);
|
2009-08-30 06:17:16 +00:00
|
|
|
return false;
|
|
|
|
}
|
2009-07-07 20:30:46 +00:00
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
getStreamer().EmitCommonSymbol(Sym, Size, 1 << Pow2Alignment);
|
2009-07-07 20:30:46 +00:00
|
|
|
return false;
|
|
|
|
}
|
2009-07-10 22:20:30 +00:00
|
|
|
|
2009-07-13 23:15:14 +00:00
|
|
|
/// ParseDirectiveAbort
|
|
|
|
/// ::= .abort [ "abort_string" ]
|
|
|
|
bool AsmParser::ParseDirectiveAbort() {
|
2009-07-27 23:20:52 +00:00
|
|
|
// FIXME: Use loc from directive.
|
2010-07-12 18:03:11 +00:00
|
|
|
SMLoc Loc = getLexer().getLoc();
|
2009-07-27 23:20:52 +00:00
|
|
|
|
2009-07-27 21:49:56 +00:00
|
|
|
StringRef Str = "";
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
|
|
if (getLexer().isNot(AsmToken::String))
|
2009-07-13 23:15:14 +00:00
|
|
|
return TokError("expected string in '.abort' directive");
|
|
|
|
|
2010-01-19 21:44:56 +00:00
|
|
|
Str = getTok().getString();
|
2009-07-13 23:15:14 +00:00
|
|
|
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-07-13 23:15:14 +00:00
|
|
|
}
|
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
2009-07-13 23:15:14 +00:00
|
|
|
return TokError("unexpected token in '.abort' directive");
|
|
|
|
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-07-13 23:15:14 +00:00
|
|
|
|
2009-07-27 21:49:56 +00:00
|
|
|
// FIXME: Handle here.
|
2009-07-27 23:20:52 +00:00
|
|
|
if (Str.empty())
|
|
|
|
Error(Loc, ".abort detected. Assembly stopping.");
|
|
|
|
else
|
|
|
|
Error(Loc, ".abort '" + Str + "' detected. Assembly stopping.");
|
2009-07-13 23:15:14 +00:00
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
2009-07-14 21:35:03 +00:00
|
|
|
|
2009-07-14 23:21:55 +00:00
|
|
|
/// ParseDirectiveInclude
|
|
|
|
/// ::= .include "filename"
|
|
|
|
bool AsmParser::ParseDirectiveInclude() {
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::String))
|
2009-07-14 23:21:55 +00:00
|
|
|
return TokError("expected string in '.include' directive");
|
|
|
|
|
2010-01-19 21:44:56 +00:00
|
|
|
std::string Filename = getTok().getString();
|
2010-07-12 18:03:11 +00:00
|
|
|
SMLoc IncludeLoc = getLexer().getLoc();
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-07-14 23:21:55 +00:00
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
2009-07-14 23:21:55 +00:00
|
|
|
return TokError("unexpected token in '.include' directive");
|
|
|
|
|
2009-07-16 06:14:39 +00:00
|
|
|
// Strip the quotes.
|
|
|
|
Filename = Filename.substr(1, Filename.size()-2);
|
|
|
|
|
|
|
|
// Attempt to switch the lexer to the included file before consuming the end
|
|
|
|
// of statement to avoid losing it when we switch.
|
2010-01-21 00:19:58 +00:00
|
|
|
if (EnterIncludeFile(Filename)) {
|
2010-01-20 23:19:55 +00:00
|
|
|
PrintMessage(IncludeLoc,
|
|
|
|
"Could not find include file '" + Filename + "'",
|
|
|
|
"error");
|
2009-07-16 06:14:39 +00:00
|
|
|
return true;
|
|
|
|
}
|
2009-07-14 23:21:55 +00:00
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
2009-07-15 15:30:11 +00:00
|
|
|
|
2009-08-07 22:46:00 +00:00
|
|
|
/// 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;
|
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
2009-08-07 22:46:00 +00:00
|
|
|
return TokError("unexpected token in '.if' directive");
|
|
|
|
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-08-07 22:46:00 +00:00
|
|
|
|
|
|
|
TheCondState.CondMet = ExprValue;
|
|
|
|
TheCondState.Ignore = !TheCondState.CondMet;
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
|
|
|
|
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;
|
|
|
|
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
2009-08-07 22:46:00 +00:00
|
|
|
return TokError("unexpected token in '.elseif' directive");
|
|
|
|
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-08-07 22:46:00 +00:00
|
|
|
TheCondState.CondMet = ExprValue;
|
|
|
|
TheCondState.Ignore = !TheCondState.CondMet;
|
|
|
|
}
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
/// ParseDirectiveElse
|
|
|
|
/// ::= .else
|
|
|
|
bool AsmParser::ParseDirectiveElse(SMLoc DirectiveLoc) {
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
2009-08-07 22:46:00 +00:00
|
|
|
return TokError("unexpected token in '.else' directive");
|
|
|
|
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-08-07 22:46:00 +00:00
|
|
|
|
|
|
|
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;
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
/// ParseDirectiveEndIf
|
|
|
|
/// ::= .endif
|
|
|
|
bool AsmParser::ParseDirectiveEndIf(SMLoc DirectiveLoc) {
|
2010-07-12 18:03:11 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
2009-08-07 22:46:00 +00:00
|
|
|
return TokError("unexpected token in '.endif' directive");
|
|
|
|
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-08-07 22:46:00 +00:00
|
|
|
|
|
|
|
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;
|
|
|
|
}
|
2009-08-11 04:24:50 +00:00
|
|
|
|
|
|
|
/// ParseDirectiveFile
|
|
|
|
/// ::= .file [number] string
|
2010-07-12 17:54:38 +00:00
|
|
|
bool GenericAsmParser::ParseDirectiveFile(StringRef, SMLoc DirectiveLoc) {
|
2009-08-11 04:24:50 +00:00
|
|
|
// FIXME: I'm not sure what this is.
|
|
|
|
int64_t FileNumber = -1;
|
2010-07-12 17:45:27 +00:00
|
|
|
if (getLexer().is(AsmToken::Integer)) {
|
2010-01-19 21:44:56 +00:00
|
|
|
FileNumber = getTok().getIntVal();
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2010-07-12 17:45:27 +00:00
|
|
|
|
2009-08-11 04:24:50 +00:00
|
|
|
if (FileNumber < 1)
|
|
|
|
return TokError("file number less than one");
|
|
|
|
}
|
|
|
|
|
2010-07-12 17:45:27 +00:00
|
|
|
if (getLexer().isNot(AsmToken::String))
|
2009-08-11 04:24:50 +00:00
|
|
|
return TokError("unexpected token in '.file' directive");
|
2010-07-12 17:45:27 +00:00
|
|
|
|
2010-01-25 19:02:58 +00:00
|
|
|
StringRef Filename = getTok().getString();
|
|
|
|
Filename = Filename.substr(1, Filename.size()-2);
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-08-11 04:24:50 +00:00
|
|
|
|
2010-07-12 17:45:27 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
2009-08-11 04:24:50 +00:00
|
|
|
return TokError("unexpected token in '.file' directive");
|
|
|
|
|
2010-01-25 19:02:58 +00:00
|
|
|
if (FileNumber == -1)
|
2010-07-12 17:45:27 +00:00
|
|
|
getStreamer().EmitFileDirective(Filename);
|
2010-01-25 19:02:58 +00:00
|
|
|
else
|
2010-07-12 17:45:27 +00:00
|
|
|
getStreamer().EmitDwarfFileDirective(FileNumber, Filename);
|
|
|
|
|
2009-08-11 04:24:50 +00:00
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
/// ParseDirectiveLine
|
|
|
|
/// ::= .line [number]
|
2010-07-12 17:54:38 +00:00
|
|
|
bool GenericAsmParser::ParseDirectiveLine(StringRef, SMLoc DirectiveLoc) {
|
2010-07-12 17:45:27 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
|
|
if (getLexer().isNot(AsmToken::Integer))
|
2009-08-11 04:24:50 +00:00
|
|
|
return TokError("unexpected token in '.line' directive");
|
|
|
|
|
2010-01-19 21:44:56 +00:00
|
|
|
int64_t LineNumber = getTok().getIntVal();
|
2009-08-11 04:24:50 +00:00
|
|
|
(void) LineNumber;
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-08-11 04:24:50 +00:00
|
|
|
|
|
|
|
// FIXME: Do something with the .line.
|
|
|
|
}
|
|
|
|
|
2010-07-12 17:45:27 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
2010-07-01 20:20:01 +00:00
|
|
|
return TokError("unexpected token in '.line' directive");
|
2009-08-11 04:24:50 +00:00
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/// ParseDirectiveLoc
|
|
|
|
/// ::= .loc number [number [number]]
|
2010-07-12 17:54:38 +00:00
|
|
|
bool GenericAsmParser::ParseDirectiveLoc(StringRef, SMLoc DirectiveLoc) {
|
2010-07-12 17:45:27 +00:00
|
|
|
if (getLexer().isNot(AsmToken::Integer))
|
2009-08-11 04:24:50 +00:00
|
|
|
return TokError("unexpected token in '.loc' directive");
|
|
|
|
|
|
|
|
// FIXME: What are these fields?
|
2010-01-19 21:44:56 +00:00
|
|
|
int64_t FileNumber = getTok().getIntVal();
|
2009-08-11 04:24:50 +00:00
|
|
|
(void) FileNumber;
|
|
|
|
// FIXME: Validate file.
|
|
|
|
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2010-07-12 17:45:27 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
|
|
if (getLexer().isNot(AsmToken::Integer))
|
2009-08-11 04:24:50 +00:00
|
|
|
return TokError("unexpected token in '.loc' directive");
|
|
|
|
|
2010-01-19 21:44:56 +00:00
|
|
|
int64_t Param2 = getTok().getIntVal();
|
2009-08-11 04:24:50 +00:00
|
|
|
(void) Param2;
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-08-11 04:24:50 +00:00
|
|
|
|
2010-07-12 17:45:27 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement)) {
|
|
|
|
if (getLexer().isNot(AsmToken::Integer))
|
2009-08-11 04:24:50 +00:00
|
|
|
return TokError("unexpected token in '.loc' directive");
|
|
|
|
|
2010-01-19 21:44:56 +00:00
|
|
|
int64_t Param3 = getTok().getIntVal();
|
2009-08-11 04:24:50 +00:00
|
|
|
(void) Param3;
|
2010-01-19 20:22:31 +00:00
|
|
|
Lex();
|
2009-08-11 04:24:50 +00:00
|
|
|
|
|
|
|
// FIXME: Do something with the .loc.
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-07-12 17:45:27 +00:00
|
|
|
if (getLexer().isNot(AsmToken::EndOfStatement))
|
2009-08-11 04:24:50 +00:00
|
|
|
return TokError("unexpected token in '.file' directive");
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|