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-rw-r--r--contrib/llvm/lib/MC/MCParser/AsmParser.cpp198
1 files changed, 156 insertions, 42 deletions
diff --git a/contrib/llvm/lib/MC/MCParser/AsmParser.cpp b/contrib/llvm/lib/MC/MCParser/AsmParser.cpp
index 0c181f3..1648757 100644
--- a/contrib/llvm/lib/MC/MCParser/AsmParser.cpp
+++ b/contrib/llvm/lib/MC/MCParser/AsmParser.cpp
@@ -18,22 +18,22 @@
#include "llvm/ADT/Twine.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCDwarf.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCParser/AsmCond.h"
#include "llvm/MC/MCParser/AsmLexer.h"
#include "llvm/MC/MCParser/MCAsmParser.h"
#include "llvm/MC/MCParser/MCParsedAsmOperand.h"
+#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
-#include "llvm/MC/MCDwarf.h"
+#include "llvm/MC/MCTargetAsmParser.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/MathExtras.h"
#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;
@@ -87,6 +87,8 @@ private:
MCStreamer &Out;
const MCAsmInfo &MAI;
SourceMgr &SrcMgr;
+ SourceMgr::DiagHandlerTy SavedDiagHandler;
+ void *SavedDiagContext;
MCAsmParserExtension *GenericParser;
MCAsmParserExtension *PlatformParser;
@@ -115,8 +117,13 @@ private:
/// Flag tracking whether any errors have been encountered.
unsigned HadError : 1;
+ /// The values from the last parsed cpp hash file line comment if any.
+ StringRef CppHashFilename;
+ int64_t CppHashLineNumber;
+ SMLoc CppHashLoc;
+
public:
- AsmParser(const Target &T, SourceMgr &SM, MCContext &Ctx, MCStreamer &Out,
+ AsmParser(SourceMgr &SM, MCContext &Ctx, MCStreamer &Out,
const MCAsmInfo &MAI);
~AsmParser();
@@ -153,6 +160,8 @@ private:
void CheckForValidSection();
bool ParseStatement();
+ void EatToEndOfLine();
+ bool ParseCppHashLineFilenameComment(const SMLoc &L);
bool HandleMacroEntry(StringRef Name, SMLoc NameLoc, const Macro *M);
bool expandMacro(SmallString<256> &Buf, StringRef Body,
@@ -166,6 +175,7 @@ private:
bool ShowLine = true) const {
SrcMgr.PrintMessage(Loc, Msg, Type, ShowLine);
}
+ static void DiagHandler(const SMDiagnostic &Diag, void *Context);
/// EnterIncludeFile - Enter the specified file. This returns true on failure.
bool EnterIncludeFile(const std::string &Filename);
@@ -338,11 +348,16 @@ extern MCAsmParserExtension *createCOFFAsmParser();
enum { DEFAULT_ADDRSPACE = 0 };
-AsmParser::AsmParser(const Target &T, SourceMgr &_SM, MCContext &_Ctx,
+AsmParser::AsmParser(SourceMgr &_SM, MCContext &_Ctx,
MCStreamer &_Out, const MCAsmInfo &_MAI)
: Lexer(_MAI), Ctx(_Ctx), Out(_Out), MAI(_MAI), SrcMgr(_SM),
GenericParser(new GenericAsmParser), PlatformParser(0),
- CurBuffer(0), MacrosEnabled(true) {
+ CurBuffer(0), MacrosEnabled(true), CppHashLineNumber(0) {
+ // Save the old handler.
+ SavedDiagHandler = SrcMgr.getDiagHandler();
+ SavedDiagContext = SrcMgr.getDiagContext();
+ // Set our own handler which calls the saved handler.
+ SrcMgr.setDiagHandler(DiagHandler, this);
Lexer.setBuffer(SrcMgr.getMemoryBuffer(CurBuffer));
// Initialize the generic parser.
@@ -740,9 +755,12 @@ AsmParser::ApplyModifierToExpr(const MCExpr *E,
/// ParseExpression - Parse an expression and return it.
///
-/// expr ::= expr +,- expr -> lowest.
-/// expr ::= expr |,^,&,! expr -> middle.
-/// expr ::= expr *,/,%,<<,>> expr -> highest.
+/// expr ::= expr &&,|| expr -> lowest.
+/// expr ::= expr |,^,&,! expr
+/// expr ::= expr ==,!=,<>,<,<=,>,>= expr
+/// expr ::= expr <<,>> expr
+/// expr ::= expr +,- expr
+/// expr ::= expr *,/,% expr -> highest.
/// expr ::= primaryexpr
///
bool AsmParser::ParseExpression(const MCExpr *&Res, SMLoc &EndLoc) {
@@ -809,7 +827,7 @@ static unsigned getBinOpPrecedence(AsmToken::TokenKind K,
default:
return 0; // not a binop.
- // Lowest Precedence: &&, ||, @
+ // Lowest Precedence: &&, ||
case AsmToken::AmpAmp:
Kind = MCBinaryExpr::LAnd;
return 1;
@@ -852,30 +870,32 @@ static unsigned getBinOpPrecedence(AsmToken::TokenKind K,
Kind = MCBinaryExpr::GTE;
return 3;
+ // Intermediate Precedence: <<, >>
+ case AsmToken::LessLess:
+ Kind = MCBinaryExpr::Shl;
+ return 4;
+ case AsmToken::GreaterGreater:
+ Kind = MCBinaryExpr::Shr;
+ return 4;
+
// High Intermediate Precedence: +, -
case AsmToken::Plus:
Kind = MCBinaryExpr::Add;
- return 4;
+ return 5;
case AsmToken::Minus:
Kind = MCBinaryExpr::Sub;
- return 4;
+ return 5;
- // Highest Precedence: *, /, %, <<, >>
+ // Highest Precedence: *, /, %
case AsmToken::Star:
Kind = MCBinaryExpr::Mul;
- return 5;
+ return 6;
case AsmToken::Slash:
Kind = MCBinaryExpr::Div;
- return 5;
+ return 6;
case AsmToken::Percent:
Kind = MCBinaryExpr::Mod;
- return 5;
- case AsmToken::LessLess:
- Kind = MCBinaryExpr::Shl;
- return 5;
- case AsmToken::GreaterGreater:
- Kind = MCBinaryExpr::Shr;
- return 5;
+ return 6;
}
}
@@ -932,10 +952,8 @@ bool AsmParser::ParseStatement() {
StringRef IDVal;
int64_t LocalLabelVal = -1;
// A full line comment is a '#' as the first token.
- if (Lexer.is(AsmToken::Hash)) {
- EatToEndOfStatement();
- return false;
- }
+ if (Lexer.is(AsmToken::Hash))
+ return ParseCppHashLineFilenameComment(IDLoc);
// Allow an integer followed by a ':' as a directional local label.
if (Lexer.is(AsmToken::Integer)) {
@@ -1117,15 +1135,8 @@ bool AsmParser::ParseStatement() {
if (IDVal == ".globl" || IDVal == ".global")
return ParseDirectiveSymbolAttribute(MCSA_Global);
- // ELF only? Should it be here?
- if (IDVal == ".local")
- return ParseDirectiveSymbolAttribute(MCSA_Local);
- if (IDVal == ".hidden")
- return ParseDirectiveSymbolAttribute(MCSA_Hidden);
if (IDVal == ".indirect_symbol")
return ParseDirectiveSymbolAttribute(MCSA_IndirectSymbol);
- if (IDVal == ".internal")
- return ParseDirectiveSymbolAttribute(MCSA_Internal);
if (IDVal == ".lazy_reference")
return ParseDirectiveSymbolAttribute(MCSA_LazyReference);
if (IDVal == ".no_dead_strip")
@@ -1134,12 +1145,8 @@ bool AsmParser::ParseStatement() {
return ParseDirectiveSymbolAttribute(MCSA_SymbolResolver);
if (IDVal == ".private_extern")
return ParseDirectiveSymbolAttribute(MCSA_PrivateExtern);
- if (IDVal == ".protected")
- return ParseDirectiveSymbolAttribute(MCSA_Protected);
if (IDVal == ".reference")
return ParseDirectiveSymbolAttribute(MCSA_Reference);
- if (IDVal == ".weak")
- return ParseDirectiveSymbolAttribute(MCSA_Weak);
if (IDVal == ".weak_definition")
return ParseDirectiveSymbolAttribute(MCSA_WeakDefinition);
if (IDVal == ".weak_reference")
@@ -1157,7 +1164,7 @@ bool AsmParser::ParseStatement() {
if (IDVal == ".include")
return ParseDirectiveInclude();
- if (IDVal == ".code16" || IDVal == ".code32" || IDVal == ".code64")
+ if (IDVal == ".code16")
return TokError(Twine(IDVal) + " not supported yet");
// Look up the handler in the handler table.
@@ -1215,6 +1222,108 @@ bool AsmParser::ParseStatement() {
return false;
}
+/// EatToEndOfLine uses the Lexer to eat the characters to the end of the line
+/// since they may not be able to be tokenized to get to the end of line token.
+void AsmParser::EatToEndOfLine() {
+ if (!Lexer.is(AsmToken::EndOfStatement))
+ Lexer.LexUntilEndOfLine();
+ // Eat EOL.
+ Lex();
+}
+
+/// ParseCppHashLineFilenameComment as this:
+/// ::= # number "filename"
+/// or just as a full line comment if it doesn't have a number and a string.
+bool AsmParser::ParseCppHashLineFilenameComment(const SMLoc &L) {
+ Lex(); // Eat the hash token.
+
+ if (getLexer().isNot(AsmToken::Integer)) {
+ // Consume the line since in cases it is not a well-formed line directive,
+ // as if were simply a full line comment.
+ EatToEndOfLine();
+ return false;
+ }
+
+ int64_t LineNumber = getTok().getIntVal();
+ Lex();
+
+ if (getLexer().isNot(AsmToken::String)) {
+ EatToEndOfLine();
+ return false;
+ }
+
+ StringRef Filename = getTok().getString();
+ // Get rid of the enclosing quotes.
+ Filename = Filename.substr(1, Filename.size()-2);
+
+ // Save the SMLoc, Filename and LineNumber for later use by diagnostics.
+ CppHashLoc = L;
+ CppHashFilename = Filename;
+ CppHashLineNumber = LineNumber;
+
+ // Ignore any trailing characters, they're just comment.
+ EatToEndOfLine();
+ return false;
+}
+
+/// DiagHandler - will use the the last parsed cpp hash line filename comment
+/// for the Filename and LineNo if any in the diagnostic.
+void AsmParser::DiagHandler(const SMDiagnostic &Diag, void *Context) {
+ const AsmParser *Parser = static_cast<const AsmParser*>(Context);
+ raw_ostream &OS = errs();
+
+ const SourceMgr &DiagSrcMgr = *Diag.getSourceMgr();
+ const SMLoc &DiagLoc = Diag.getLoc();
+ int DiagBuf = DiagSrcMgr.FindBufferContainingLoc(DiagLoc);
+ int CppHashBuf = Parser->SrcMgr.FindBufferContainingLoc(Parser->CppHashLoc);
+
+ // Like SourceMgr::PrintMessage() we need to print the include stack if any
+ // before printing the message.
+ int DiagCurBuffer = DiagSrcMgr.FindBufferContainingLoc(DiagLoc);
+ if (!Parser->SavedDiagHandler && DiagCurBuffer > 0) {
+ SMLoc ParentIncludeLoc = DiagSrcMgr.getParentIncludeLoc(DiagCurBuffer);
+ DiagSrcMgr.PrintIncludeStack(ParentIncludeLoc, OS);
+ }
+
+ // If we have not parsed a cpp hash line filename comment or the source
+ // manager changed or buffer changed (like in a nested include) then just
+ // print the normal diagnostic using its Filename and LineNo.
+ if (!Parser->CppHashLineNumber ||
+ &DiagSrcMgr != &Parser->SrcMgr ||
+ DiagBuf != CppHashBuf) {
+ if (Parser->SavedDiagHandler)
+ Parser->SavedDiagHandler(Diag, Parser->SavedDiagContext);
+ else
+ Diag.Print(0, OS);
+ return;
+ }
+
+ // Use the CppHashFilename and calculate a line number based on the
+ // CppHashLoc and CppHashLineNumber relative to this Diag's SMLoc for
+ // the diagnostic.
+ const std::string Filename = Parser->CppHashFilename;
+
+ int DiagLocLineNo = DiagSrcMgr.FindLineNumber(DiagLoc, DiagBuf);
+ int CppHashLocLineNo =
+ Parser->SrcMgr.FindLineNumber(Parser->CppHashLoc, CppHashBuf);
+ int LineNo = Parser->CppHashLineNumber - 1 +
+ (DiagLocLineNo - CppHashLocLineNo);
+
+ SMDiagnostic NewDiag(*Diag.getSourceMgr(),
+ Diag.getLoc(),
+ Filename,
+ LineNo,
+ Diag.getColumnNo(),
+ Diag.getMessage(),
+ Diag.getLineContents(),
+ Diag.getShowLine());
+
+ if (Parser->SavedDiagHandler)
+ Parser->SavedDiagHandler(NewDiag, Parser->SavedDiagContext);
+ else
+ NewDiag.Print(0, OS);
+}
+
bool AsmParser::expandMacro(SmallString<256> &Buf, StringRef Body,
const std::vector<StringRef> &Parameters,
const std::vector<std::vector<AsmToken> > &A,
@@ -1923,12 +2032,17 @@ bool AsmParser::ParseDirectiveSymbolAttribute(MCSymbolAttr Attr) {
if (getLexer().isNot(AsmToken::EndOfStatement)) {
for (;;) {
StringRef Name;
+ SMLoc Loc = getTok().getLoc();
if (ParseIdentifier(Name))
- return TokError("expected identifier in directive");
+ return Error(Loc, "expected identifier in directive");
MCSymbol *Sym = getContext().GetOrCreateSymbol(Name);
+ // Assembler local symbols don't make any sense here. Complain loudly.
+ if (Sym->isTemporary())
+ return Error(Loc, "non-local symbol required in directive");
+
getStreamer().EmitSymbolAttribute(Sym, Attr);
if (getLexer().is(AsmToken::EndOfStatement))
@@ -2416,7 +2530,7 @@ bool GenericAsmParser::ParseRegisterOrRegisterNumber(int64_t &Register,
if (getParser().getTargetParser().ParseRegister(RegNo, DirectiveLoc,
DirectiveLoc))
return true;
- Register = getContext().getTargetAsmInfo().getDwarfRegNum(RegNo, true);
+ Register = getContext().getRegisterInfo().getDwarfRegNum(RegNo, true);
} else
return getParser().ParseAbsoluteExpression(Register);
@@ -2724,8 +2838,8 @@ bool GenericAsmParser::ParseDirectiveLEB128(StringRef DirName, SMLoc) {
/// \brief Create an MCAsmParser instance.
-MCAsmParser *llvm::createMCAsmParser(const Target &T, SourceMgr &SM,
+MCAsmParser *llvm::createMCAsmParser(SourceMgr &SM,
MCContext &C, MCStreamer &Out,
const MCAsmInfo &MAI) {
- return new AsmParser(T, SM, C, Out, MAI);
+ return new AsmParser(SM, C, Out, MAI);
}
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