853 lines
34 KiB
C++
853 lines
34 KiB
C++
//===--- InitPreprocessor.cpp - PP initialization code. ---------*- C++ -*-===//
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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 file implements the clang::InitializePreprocessor function.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Frontend/Utils.h"
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#include "clang/Basic/FileManager.h"
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#include "clang/Basic/MacroBuilder.h"
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#include "clang/Basic/SourceManager.h"
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#include "clang/Basic/TargetInfo.h"
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#include "clang/Basic/Version.h"
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#include "clang/Frontend/FrontendDiagnostic.h"
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#include "clang/Frontend/FrontendOptions.h"
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#include "clang/Lex/HeaderSearch.h"
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#include "clang/Lex/Preprocessor.h"
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#include "clang/Lex/PreprocessorOptions.h"
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#include "clang/Serialization/ASTReader.h"
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#include "llvm/ADT/APFloat.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/Path.h"
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using namespace clang;
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static bool MacroBodyEndsInBackslash(StringRef MacroBody) {
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while (!MacroBody.empty() && isWhitespace(MacroBody.back()))
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MacroBody = MacroBody.drop_back();
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return !MacroBody.empty() && MacroBody.back() == '\\';
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}
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// Append a #define line to Buf for Macro. Macro should be of the form XXX,
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// in which case we emit "#define XXX 1" or "XXX=Y z W" in which case we emit
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// "#define XXX Y z W". To get a #define with no value, use "XXX=".
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static void DefineBuiltinMacro(MacroBuilder &Builder, StringRef Macro,
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DiagnosticsEngine &Diags) {
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std::pair<StringRef, StringRef> MacroPair = Macro.split('=');
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StringRef MacroName = MacroPair.first;
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StringRef MacroBody = MacroPair.second;
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if (MacroName.size() != Macro.size()) {
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// Per GCC -D semantics, the macro ends at \n if it exists.
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StringRef::size_type End = MacroBody.find_first_of("\n\r");
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if (End != StringRef::npos)
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Diags.Report(diag::warn_fe_macro_contains_embedded_newline)
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<< MacroName;
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MacroBody = MacroBody.substr(0, End);
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// We handle macro bodies which end in a backslash by appending an extra
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// backslash+newline. This makes sure we don't accidentally treat the
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// backslash as a line continuation marker.
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if (MacroBodyEndsInBackslash(MacroBody))
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Builder.defineMacro(MacroName, Twine(MacroBody) + "\\\n");
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else
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Builder.defineMacro(MacroName, MacroBody);
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} else {
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// Push "macroname 1".
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Builder.defineMacro(Macro);
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}
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}
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/// AddImplicitInclude - Add an implicit \#include of the specified file to the
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/// predefines buffer.
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static void AddImplicitInclude(MacroBuilder &Builder, StringRef File,
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FileManager &FileMgr) {
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Builder.append(Twine("#include \"") +
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HeaderSearch::NormalizeDashIncludePath(File, FileMgr) + "\"");
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}
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static void AddImplicitIncludeMacros(MacroBuilder &Builder,
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StringRef File,
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FileManager &FileMgr) {
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Builder.append(Twine("#__include_macros \"") +
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HeaderSearch::NormalizeDashIncludePath(File, FileMgr) + "\"");
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// Marker token to stop the __include_macros fetch loop.
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Builder.append("##"); // ##?
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}
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/// AddImplicitIncludePTH - Add an implicit \#include using the original file
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/// used to generate a PTH cache.
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static void AddImplicitIncludePTH(MacroBuilder &Builder, Preprocessor &PP,
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StringRef ImplicitIncludePTH) {
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PTHManager *P = PP.getPTHManager();
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// Null check 'P' in the corner case where it couldn't be created.
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const char *OriginalFile = P ? P->getOriginalSourceFile() : 0;
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if (!OriginalFile) {
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PP.getDiagnostics().Report(diag::err_fe_pth_file_has_no_source_header)
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<< ImplicitIncludePTH;
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return;
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}
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AddImplicitInclude(Builder, OriginalFile, PP.getFileManager());
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}
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/// \brief Add an implicit \#include using the original file used to generate
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/// a PCH file.
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static void AddImplicitIncludePCH(MacroBuilder &Builder, Preprocessor &PP,
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StringRef ImplicitIncludePCH) {
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std::string OriginalFile =
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ASTReader::getOriginalSourceFile(ImplicitIncludePCH, PP.getFileManager(),
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PP.getDiagnostics());
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if (OriginalFile.empty())
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return;
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AddImplicitInclude(Builder, OriginalFile, PP.getFileManager());
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}
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/// PickFP - This is used to pick a value based on the FP semantics of the
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/// specified FP model.
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template <typename T>
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static T PickFP(const llvm::fltSemantics *Sem, T IEEESingleVal,
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T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal,
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T IEEEQuadVal) {
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if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEsingle)
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return IEEESingleVal;
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if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEdouble)
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return IEEEDoubleVal;
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if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::x87DoubleExtended)
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return X87DoubleExtendedVal;
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if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::PPCDoubleDouble)
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return PPCDoubleDoubleVal;
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assert(Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEquad);
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return IEEEQuadVal;
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}
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static void DefineFloatMacros(MacroBuilder &Builder, StringRef Prefix,
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const llvm::fltSemantics *Sem, StringRef Ext) {
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const char *DenormMin, *Epsilon, *Max, *Min;
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DenormMin = PickFP(Sem, "1.40129846e-45", "4.9406564584124654e-324",
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"3.64519953188247460253e-4951",
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"4.94065645841246544176568792868221e-324",
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"6.47517511943802511092443895822764655e-4966");
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int Digits = PickFP(Sem, 6, 15, 18, 31, 33);
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Epsilon = PickFP(Sem, "1.19209290e-7", "2.2204460492503131e-16",
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"1.08420217248550443401e-19",
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"4.94065645841246544176568792868221e-324",
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"1.92592994438723585305597794258492732e-34");
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int MantissaDigits = PickFP(Sem, 24, 53, 64, 106, 113);
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int Min10Exp = PickFP(Sem, -37, -307, -4931, -291, -4931);
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int Max10Exp = PickFP(Sem, 38, 308, 4932, 308, 4932);
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int MinExp = PickFP(Sem, -125, -1021, -16381, -968, -16381);
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int MaxExp = PickFP(Sem, 128, 1024, 16384, 1024, 16384);
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Min = PickFP(Sem, "1.17549435e-38", "2.2250738585072014e-308",
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"3.36210314311209350626e-4932",
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"2.00416836000897277799610805135016e-292",
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"3.36210314311209350626267781732175260e-4932");
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Max = PickFP(Sem, "3.40282347e+38", "1.7976931348623157e+308",
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"1.18973149535723176502e+4932",
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"1.79769313486231580793728971405301e+308",
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"1.18973149535723176508575932662800702e+4932");
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SmallString<32> DefPrefix;
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DefPrefix = "__";
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DefPrefix += Prefix;
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DefPrefix += "_";
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Builder.defineMacro(DefPrefix + "DENORM_MIN__", Twine(DenormMin)+Ext);
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Builder.defineMacro(DefPrefix + "HAS_DENORM__");
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Builder.defineMacro(DefPrefix + "DIG__", Twine(Digits));
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Builder.defineMacro(DefPrefix + "EPSILON__", Twine(Epsilon)+Ext);
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Builder.defineMacro(DefPrefix + "HAS_INFINITY__");
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Builder.defineMacro(DefPrefix + "HAS_QUIET_NAN__");
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Builder.defineMacro(DefPrefix + "MANT_DIG__", Twine(MantissaDigits));
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Builder.defineMacro(DefPrefix + "MAX_10_EXP__", Twine(Max10Exp));
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Builder.defineMacro(DefPrefix + "MAX_EXP__", Twine(MaxExp));
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Builder.defineMacro(DefPrefix + "MAX__", Twine(Max)+Ext);
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Builder.defineMacro(DefPrefix + "MIN_10_EXP__","("+Twine(Min10Exp)+")");
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Builder.defineMacro(DefPrefix + "MIN_EXP__", "("+Twine(MinExp)+")");
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Builder.defineMacro(DefPrefix + "MIN__", Twine(Min)+Ext);
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}
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/// DefineTypeSize - Emit a macro to the predefines buffer that declares a macro
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/// named MacroName with the max value for a type with width 'TypeWidth' a
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/// signedness of 'isSigned' and with a value suffix of 'ValSuffix' (e.g. LL).
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static void DefineTypeSize(StringRef MacroName, unsigned TypeWidth,
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StringRef ValSuffix, bool isSigned,
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MacroBuilder &Builder) {
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llvm::APInt MaxVal = isSigned ? llvm::APInt::getSignedMaxValue(TypeWidth)
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: llvm::APInt::getMaxValue(TypeWidth);
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Builder.defineMacro(MacroName, MaxVal.toString(10, isSigned) + ValSuffix);
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}
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/// DefineTypeSize - An overloaded helper that uses TargetInfo to determine
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/// the width, suffix, and signedness of the given type
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static void DefineTypeSize(StringRef MacroName, TargetInfo::IntType Ty,
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const TargetInfo &TI, MacroBuilder &Builder) {
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DefineTypeSize(MacroName, TI.getTypeWidth(Ty), TI.getTypeConstantSuffix(Ty),
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TI.isTypeSigned(Ty), Builder);
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}
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static void DefineType(const Twine &MacroName, TargetInfo::IntType Ty,
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MacroBuilder &Builder) {
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Builder.defineMacro(MacroName, TargetInfo::getTypeName(Ty));
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}
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static void DefineTypeWidth(StringRef MacroName, TargetInfo::IntType Ty,
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const TargetInfo &TI, MacroBuilder &Builder) {
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Builder.defineMacro(MacroName, Twine(TI.getTypeWidth(Ty)));
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}
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static void DefineTypeSizeof(StringRef MacroName, unsigned BitWidth,
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const TargetInfo &TI, MacroBuilder &Builder) {
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Builder.defineMacro(MacroName,
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Twine(BitWidth / TI.getCharWidth()));
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}
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static void DefineExactWidthIntType(TargetInfo::IntType Ty,
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const TargetInfo &TI, MacroBuilder &Builder) {
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int TypeWidth = TI.getTypeWidth(Ty);
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// Use the target specified int64 type, when appropriate, so that [u]int64_t
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// ends up being defined in terms of the correct type.
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if (TypeWidth == 64)
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Ty = TI.getInt64Type();
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DefineType("__INT" + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
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StringRef ConstSuffix(TargetInfo::getTypeConstantSuffix(Ty));
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if (!ConstSuffix.empty())
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Builder.defineMacro("__INT" + Twine(TypeWidth) + "_C_SUFFIX__",
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ConstSuffix);
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}
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/// Get the value the ATOMIC_*_LOCK_FREE macro should have for a type with
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/// the specified properties.
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static const char *getLockFreeValue(unsigned TypeWidth, unsigned TypeAlign,
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unsigned InlineWidth) {
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// Fully-aligned, power-of-2 sizes no larger than the inline
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// width will be inlined as lock-free operations.
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if (TypeWidth == TypeAlign && (TypeWidth & (TypeWidth - 1)) == 0 &&
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TypeWidth <= InlineWidth)
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return "2"; // "always lock free"
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// We cannot be certain what operations the lib calls might be
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// able to implement as lock-free on future processors.
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return "1"; // "sometimes lock free"
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}
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/// \brief Add definitions required for a smooth interaction between
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/// Objective-C++ automated reference counting and libstdc++ (4.2).
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static void AddObjCXXARCLibstdcxxDefines(const LangOptions &LangOpts,
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MacroBuilder &Builder) {
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Builder.defineMacro("_GLIBCXX_PREDEFINED_OBJC_ARC_IS_SCALAR");
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std::string Result;
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{
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// Provide specializations for the __is_scalar type trait so that
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// lifetime-qualified objects are not considered "scalar" types, which
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// libstdc++ uses as an indicator of the presence of trivial copy, assign,
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// default-construct, and destruct semantics (none of which hold for
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// lifetime-qualified objects in ARC).
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llvm::raw_string_ostream Out(Result);
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Out << "namespace std {\n"
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<< "\n"
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<< "struct __true_type;\n"
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<< "struct __false_type;\n"
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<< "\n";
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Out << "template<typename _Tp> struct __is_scalar;\n"
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<< "\n";
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Out << "template<typename _Tp>\n"
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<< "struct __is_scalar<__attribute__((objc_ownership(strong))) _Tp> {\n"
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<< " enum { __value = 0 };\n"
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<< " typedef __false_type __type;\n"
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<< "};\n"
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<< "\n";
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if (LangOpts.ObjCARCWeak) {
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Out << "template<typename _Tp>\n"
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<< "struct __is_scalar<__attribute__((objc_ownership(weak))) _Tp> {\n"
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<< " enum { __value = 0 };\n"
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<< " typedef __false_type __type;\n"
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<< "};\n"
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<< "\n";
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}
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Out << "template<typename _Tp>\n"
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<< "struct __is_scalar<__attribute__((objc_ownership(autoreleasing)))"
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<< " _Tp> {\n"
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<< " enum { __value = 0 };\n"
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<< " typedef __false_type __type;\n"
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<< "};\n"
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<< "\n";
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Out << "}\n";
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}
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Builder.append(Result);
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}
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static void InitializeStandardPredefinedMacros(const TargetInfo &TI,
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const LangOptions &LangOpts,
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const FrontendOptions &FEOpts,
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MacroBuilder &Builder) {
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if (!LangOpts.MicrosoftMode && !LangOpts.TraditionalCPP)
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Builder.defineMacro("__STDC__");
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if (LangOpts.Freestanding)
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Builder.defineMacro("__STDC_HOSTED__", "0");
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else
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Builder.defineMacro("__STDC_HOSTED__");
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if (!LangOpts.CPlusPlus) {
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if (LangOpts.C11)
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Builder.defineMacro("__STDC_VERSION__", "201112L");
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else if (LangOpts.C99)
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Builder.defineMacro("__STDC_VERSION__", "199901L");
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else if (!LangOpts.GNUMode && LangOpts.Digraphs)
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Builder.defineMacro("__STDC_VERSION__", "199409L");
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} else {
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// FIXME: Use the right value for __cplusplus for C++1y once one is chosen.
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if (LangOpts.CPlusPlus1y)
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Builder.defineMacro("__cplusplus", "201305L");
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// C++11 [cpp.predefined]p1:
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// The name __cplusplus is defined to the value 201103L when compiling a
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// C++ translation unit.
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else if (LangOpts.CPlusPlus11)
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Builder.defineMacro("__cplusplus", "201103L");
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// C++03 [cpp.predefined]p1:
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// The name __cplusplus is defined to the value 199711L when compiling a
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// C++ translation unit.
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else
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Builder.defineMacro("__cplusplus", "199711L");
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}
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// In C11 these are environment macros. In C++11 they are only defined
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// as part of <cuchar>. To prevent breakage when mixing C and C++
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// code, define these macros unconditionally. We can define them
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// unconditionally, as Clang always uses UTF-16 and UTF-32 for 16-bit
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// and 32-bit character literals.
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Builder.defineMacro("__STDC_UTF_16__", "1");
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Builder.defineMacro("__STDC_UTF_32__", "1");
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if (LangOpts.ObjC1)
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Builder.defineMacro("__OBJC__");
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// Not "standard" per se, but available even with the -undef flag.
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if (LangOpts.AsmPreprocessor)
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Builder.defineMacro("__ASSEMBLER__");
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}
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static void InitializePredefinedMacros(const TargetInfo &TI,
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const LangOptions &LangOpts,
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const FrontendOptions &FEOpts,
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MacroBuilder &Builder) {
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// Compiler version introspection macros.
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Builder.defineMacro("__llvm__"); // LLVM Backend
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Builder.defineMacro("__clang__"); // Clang Frontend
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#define TOSTR2(X) #X
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#define TOSTR(X) TOSTR2(X)
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Builder.defineMacro("__clang_major__", TOSTR(CLANG_VERSION_MAJOR));
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Builder.defineMacro("__clang_minor__", TOSTR(CLANG_VERSION_MINOR));
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#ifdef CLANG_VERSION_PATCHLEVEL
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Builder.defineMacro("__clang_patchlevel__", TOSTR(CLANG_VERSION_PATCHLEVEL));
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#else
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Builder.defineMacro("__clang_patchlevel__", "0");
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#endif
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Builder.defineMacro("__clang_version__",
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"\"" CLANG_VERSION_STRING " "
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+ getClangFullRepositoryVersion() + "\"");
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#undef TOSTR
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#undef TOSTR2
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if (!LangOpts.MicrosoftMode) {
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// Currently claim to be compatible with GCC 4.2.1-5621, but only if we're
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// not compiling for MSVC compatibility
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Builder.defineMacro("__GNUC_MINOR__", "2");
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Builder.defineMacro("__GNUC_PATCHLEVEL__", "1");
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Builder.defineMacro("__GNUC__", "4");
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Builder.defineMacro("__GXX_ABI_VERSION", "1002");
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}
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// Define macros for the C11 / C++11 memory orderings
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Builder.defineMacro("__ATOMIC_RELAXED", "0");
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Builder.defineMacro("__ATOMIC_CONSUME", "1");
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Builder.defineMacro("__ATOMIC_ACQUIRE", "2");
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Builder.defineMacro("__ATOMIC_RELEASE", "3");
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Builder.defineMacro("__ATOMIC_ACQ_REL", "4");
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Builder.defineMacro("__ATOMIC_SEQ_CST", "5");
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// Support for #pragma redefine_extname (Sun compatibility)
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Builder.defineMacro("__PRAGMA_REDEFINE_EXTNAME", "1");
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// As sad as it is, enough software depends on the __VERSION__ for version
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// checks that it is necessary to report 4.2.1 (the base GCC version we claim
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// compatibility with) first.
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Builder.defineMacro("__VERSION__", "\"4.2.1 Compatible " +
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Twine(getClangFullCPPVersion()) + "\"");
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// Initialize language-specific preprocessor defines.
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// Standard conforming mode?
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if (!LangOpts.GNUMode)
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Builder.defineMacro("__STRICT_ANSI__");
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if (LangOpts.CPlusPlus11)
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Builder.defineMacro("__GXX_EXPERIMENTAL_CXX0X__");
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if (LangOpts.ObjC1) {
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if (LangOpts.ObjCRuntime.isNonFragile()) {
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Builder.defineMacro("__OBJC2__");
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if (LangOpts.ObjCExceptions)
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Builder.defineMacro("OBJC_ZEROCOST_EXCEPTIONS");
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}
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if (LangOpts.getGC() != LangOptions::NonGC)
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Builder.defineMacro("__OBJC_GC__");
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if (LangOpts.ObjCRuntime.isNeXTFamily())
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Builder.defineMacro("__NEXT_RUNTIME__");
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if (LangOpts.ObjCRuntime.getKind() == ObjCRuntime::ObjFW) {
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VersionTuple tuple = LangOpts.ObjCRuntime.getVersion();
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unsigned minor = 0;
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if (tuple.getMinor().hasValue())
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minor = tuple.getMinor().getValue();
|
|
|
|
unsigned subminor = 0;
|
|
if (tuple.getSubminor().hasValue())
|
|
subminor = tuple.getSubminor().getValue();
|
|
|
|
Builder.defineMacro("__OBJFW_RUNTIME_ABI__",
|
|
Twine(tuple.getMajor() * 10000 + minor * 100 +
|
|
subminor));
|
|
}
|
|
|
|
Builder.defineMacro("IBOutlet", "__attribute__((iboutlet))");
|
|
Builder.defineMacro("IBOutletCollection(ClassName)",
|
|
"__attribute__((iboutletcollection(ClassName)))");
|
|
Builder.defineMacro("IBAction", "void)__attribute__((ibaction)");
|
|
}
|
|
|
|
// darwin_constant_cfstrings controls this. This is also dependent
|
|
// on other things like the runtime I believe. This is set even for C code.
|
|
if (!LangOpts.NoConstantCFStrings)
|
|
Builder.defineMacro("__CONSTANT_CFSTRINGS__");
|
|
|
|
if (LangOpts.ObjC2)
|
|
Builder.defineMacro("OBJC_NEW_PROPERTIES");
|
|
|
|
if (LangOpts.PascalStrings)
|
|
Builder.defineMacro("__PASCAL_STRINGS__");
|
|
|
|
if (LangOpts.Blocks) {
|
|
Builder.defineMacro("__block", "__attribute__((__blocks__(byref)))");
|
|
Builder.defineMacro("__BLOCKS__");
|
|
}
|
|
|
|
if (LangOpts.CXXExceptions)
|
|
Builder.defineMacro("__EXCEPTIONS");
|
|
if (LangOpts.RTTI)
|
|
Builder.defineMacro("__GXX_RTTI");
|
|
if (LangOpts.SjLjExceptions)
|
|
Builder.defineMacro("__USING_SJLJ_EXCEPTIONS__");
|
|
|
|
if (LangOpts.Deprecated)
|
|
Builder.defineMacro("__DEPRECATED");
|
|
|
|
if (LangOpts.CPlusPlus) {
|
|
Builder.defineMacro("__GNUG__", "4");
|
|
Builder.defineMacro("__GXX_WEAK__");
|
|
Builder.defineMacro("__private_extern__", "extern");
|
|
}
|
|
|
|
if (LangOpts.MicrosoftExt) {
|
|
// Both __PRETTY_FUNCTION__ and __FUNCTION__ are GCC extensions, however
|
|
// VC++ appears to only like __FUNCTION__.
|
|
Builder.defineMacro("__PRETTY_FUNCTION__", "__FUNCTION__");
|
|
// Work around some issues with Visual C++ headers.
|
|
if (LangOpts.WChar) {
|
|
// wchar_t supported as a keyword.
|
|
Builder.defineMacro("_WCHAR_T_DEFINED");
|
|
Builder.defineMacro("_NATIVE_WCHAR_T_DEFINED");
|
|
}
|
|
if (LangOpts.CPlusPlus) {
|
|
// FIXME: Support Microsoft's __identifier extension in the lexer.
|
|
Builder.append("#define __identifier(x) x");
|
|
Builder.append("class type_info;");
|
|
}
|
|
}
|
|
|
|
if (LangOpts.Optimize)
|
|
Builder.defineMacro("__OPTIMIZE__");
|
|
if (LangOpts.OptimizeSize)
|
|
Builder.defineMacro("__OPTIMIZE_SIZE__");
|
|
|
|
if (LangOpts.FastMath)
|
|
Builder.defineMacro("__FAST_MATH__");
|
|
|
|
// Initialize target-specific preprocessor defines.
|
|
|
|
// __BYTE_ORDER__ was added in GCC 4.6. It's analogous
|
|
// to the macro __BYTE_ORDER (no trailing underscores)
|
|
// from glibc's <endian.h> header.
|
|
// We don't support the PDP-11 as a target, but include
|
|
// the define so it can still be compared against.
|
|
Builder.defineMacro("__ORDER_LITTLE_ENDIAN__", "1234");
|
|
Builder.defineMacro("__ORDER_BIG_ENDIAN__", "4321");
|
|
Builder.defineMacro("__ORDER_PDP_ENDIAN__", "3412");
|
|
if (TI.isBigEndian())
|
|
Builder.defineMacro("__BYTE_ORDER__", "__ORDER_BIG_ENDIAN__");
|
|
else
|
|
Builder.defineMacro("__BYTE_ORDER__", "__ORDER_LITTLE_ENDIAN__");
|
|
|
|
|
|
if (TI.getPointerWidth(0) == 64 && TI.getLongWidth() == 64
|
|
&& TI.getIntWidth() == 32) {
|
|
Builder.defineMacro("_LP64");
|
|
Builder.defineMacro("__LP64__");
|
|
}
|
|
|
|
// Define type sizing macros based on the target properties.
|
|
assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far");
|
|
Builder.defineMacro("__CHAR_BIT__", "8");
|
|
|
|
DefineTypeSize("__SCHAR_MAX__", TargetInfo::SignedChar, TI, Builder);
|
|
DefineTypeSize("__SHRT_MAX__", TargetInfo::SignedShort, TI, Builder);
|
|
DefineTypeSize("__INT_MAX__", TargetInfo::SignedInt, TI, Builder);
|
|
DefineTypeSize("__LONG_MAX__", TargetInfo::SignedLong, TI, Builder);
|
|
DefineTypeSize("__LONG_LONG_MAX__", TargetInfo::SignedLongLong, TI, Builder);
|
|
DefineTypeSize("__WCHAR_MAX__", TI.getWCharType(), TI, Builder);
|
|
DefineTypeSize("__INTMAX_MAX__", TI.getIntMaxType(), TI, Builder);
|
|
DefineTypeSize("__SIZE_MAX__", TI.getSizeType(), TI, Builder);
|
|
|
|
DefineTypeSizeof("__SIZEOF_DOUBLE__", TI.getDoubleWidth(), TI, Builder);
|
|
DefineTypeSizeof("__SIZEOF_FLOAT__", TI.getFloatWidth(), TI, Builder);
|
|
DefineTypeSizeof("__SIZEOF_INT__", TI.getIntWidth(), TI, Builder);
|
|
DefineTypeSizeof("__SIZEOF_LONG__", TI.getLongWidth(), TI, Builder);
|
|
DefineTypeSizeof("__SIZEOF_LONG_DOUBLE__",TI.getLongDoubleWidth(),TI,Builder);
|
|
DefineTypeSizeof("__SIZEOF_LONG_LONG__", TI.getLongLongWidth(), TI, Builder);
|
|
DefineTypeSizeof("__SIZEOF_POINTER__", TI.getPointerWidth(0), TI, Builder);
|
|
DefineTypeSizeof("__SIZEOF_SHORT__", TI.getShortWidth(), TI, Builder);
|
|
DefineTypeSizeof("__SIZEOF_PTRDIFF_T__",
|
|
TI.getTypeWidth(TI.getPtrDiffType(0)), TI, Builder);
|
|
DefineTypeSizeof("__SIZEOF_SIZE_T__",
|
|
TI.getTypeWidth(TI.getSizeType()), TI, Builder);
|
|
DefineTypeSizeof("__SIZEOF_WCHAR_T__",
|
|
TI.getTypeWidth(TI.getWCharType()), TI, Builder);
|
|
DefineTypeSizeof("__SIZEOF_WINT_T__",
|
|
TI.getTypeWidth(TI.getWIntType()), TI, Builder);
|
|
if (TI.hasInt128Type())
|
|
DefineTypeSizeof("__SIZEOF_INT128__", 128, TI, Builder);
|
|
|
|
DefineType("__INTMAX_TYPE__", TI.getIntMaxType(), Builder);
|
|
DefineType("__UINTMAX_TYPE__", TI.getUIntMaxType(), Builder);
|
|
DefineTypeWidth("__INTMAX_WIDTH__", TI.getIntMaxType(), TI, Builder);
|
|
DefineType("__PTRDIFF_TYPE__", TI.getPtrDiffType(0), Builder);
|
|
DefineTypeWidth("__PTRDIFF_WIDTH__", TI.getPtrDiffType(0), TI, Builder);
|
|
DefineType("__INTPTR_TYPE__", TI.getIntPtrType(), Builder);
|
|
DefineTypeWidth("__INTPTR_WIDTH__", TI.getIntPtrType(), TI, Builder);
|
|
DefineType("__SIZE_TYPE__", TI.getSizeType(), Builder);
|
|
DefineTypeWidth("__SIZE_WIDTH__", TI.getSizeType(), TI, Builder);
|
|
DefineType("__WCHAR_TYPE__", TI.getWCharType(), Builder);
|
|
DefineTypeWidth("__WCHAR_WIDTH__", TI.getWCharType(), TI, Builder);
|
|
DefineType("__WINT_TYPE__", TI.getWIntType(), Builder);
|
|
DefineTypeWidth("__WINT_WIDTH__", TI.getWIntType(), TI, Builder);
|
|
DefineTypeWidth("__SIG_ATOMIC_WIDTH__", TI.getSigAtomicType(), TI, Builder);
|
|
DefineType("__CHAR16_TYPE__", TI.getChar16Type(), Builder);
|
|
DefineType("__CHAR32_TYPE__", TI.getChar32Type(), Builder);
|
|
|
|
DefineFloatMacros(Builder, "FLT", &TI.getFloatFormat(), "F");
|
|
DefineFloatMacros(Builder, "DBL", &TI.getDoubleFormat(), "");
|
|
DefineFloatMacros(Builder, "LDBL", &TI.getLongDoubleFormat(), "L");
|
|
|
|
// Define a __POINTER_WIDTH__ macro for stdint.h.
|
|
Builder.defineMacro("__POINTER_WIDTH__",
|
|
Twine((int)TI.getPointerWidth(0)));
|
|
|
|
if (!LangOpts.CharIsSigned)
|
|
Builder.defineMacro("__CHAR_UNSIGNED__");
|
|
|
|
if (!TargetInfo::isTypeSigned(TI.getWCharType()))
|
|
Builder.defineMacro("__WCHAR_UNSIGNED__");
|
|
|
|
if (!TargetInfo::isTypeSigned(TI.getWIntType()))
|
|
Builder.defineMacro("__WINT_UNSIGNED__");
|
|
|
|
// Define exact-width integer types for stdint.h
|
|
Builder.defineMacro("__INT" + Twine(TI.getCharWidth()) + "_TYPE__",
|
|
"char");
|
|
|
|
if (TI.getShortWidth() > TI.getCharWidth())
|
|
DefineExactWidthIntType(TargetInfo::SignedShort, TI, Builder);
|
|
|
|
if (TI.getIntWidth() > TI.getShortWidth())
|
|
DefineExactWidthIntType(TargetInfo::SignedInt, TI, Builder);
|
|
|
|
if (TI.getLongWidth() > TI.getIntWidth())
|
|
DefineExactWidthIntType(TargetInfo::SignedLong, TI, Builder);
|
|
|
|
if (TI.getLongLongWidth() > TI.getLongWidth())
|
|
DefineExactWidthIntType(TargetInfo::SignedLongLong, TI, Builder);
|
|
|
|
if (const char *Prefix = TI.getUserLabelPrefix())
|
|
Builder.defineMacro("__USER_LABEL_PREFIX__", Prefix);
|
|
|
|
if (LangOpts.FastMath || LangOpts.FiniteMathOnly)
|
|
Builder.defineMacro("__FINITE_MATH_ONLY__", "1");
|
|
else
|
|
Builder.defineMacro("__FINITE_MATH_ONLY__", "0");
|
|
|
|
if (LangOpts.GNUInline)
|
|
Builder.defineMacro("__GNUC_GNU_INLINE__");
|
|
else
|
|
Builder.defineMacro("__GNUC_STDC_INLINE__");
|
|
|
|
// The value written by __atomic_test_and_set.
|
|
// FIXME: This is target-dependent.
|
|
Builder.defineMacro("__GCC_ATOMIC_TEST_AND_SET_TRUEVAL", "1");
|
|
|
|
// Used by libstdc++ to implement ATOMIC_<foo>_LOCK_FREE.
|
|
unsigned InlineWidthBits = TI.getMaxAtomicInlineWidth();
|
|
#define DEFINE_LOCK_FREE_MACRO(TYPE, Type) \
|
|
Builder.defineMacro("__GCC_ATOMIC_" #TYPE "_LOCK_FREE", \
|
|
getLockFreeValue(TI.get##Type##Width(), \
|
|
TI.get##Type##Align(), \
|
|
InlineWidthBits));
|
|
DEFINE_LOCK_FREE_MACRO(BOOL, Bool);
|
|
DEFINE_LOCK_FREE_MACRO(CHAR, Char);
|
|
DEFINE_LOCK_FREE_MACRO(CHAR16_T, Char16);
|
|
DEFINE_LOCK_FREE_MACRO(CHAR32_T, Char32);
|
|
DEFINE_LOCK_FREE_MACRO(WCHAR_T, WChar);
|
|
DEFINE_LOCK_FREE_MACRO(SHORT, Short);
|
|
DEFINE_LOCK_FREE_MACRO(INT, Int);
|
|
DEFINE_LOCK_FREE_MACRO(LONG, Long);
|
|
DEFINE_LOCK_FREE_MACRO(LLONG, LongLong);
|
|
Builder.defineMacro("__GCC_ATOMIC_POINTER_LOCK_FREE",
|
|
getLockFreeValue(TI.getPointerWidth(0),
|
|
TI.getPointerAlign(0),
|
|
InlineWidthBits));
|
|
#undef DEFINE_LOCK_FREE_MACRO
|
|
|
|
if (LangOpts.NoInlineDefine)
|
|
Builder.defineMacro("__NO_INLINE__");
|
|
|
|
if (unsigned PICLevel = LangOpts.PICLevel) {
|
|
Builder.defineMacro("__PIC__", Twine(PICLevel));
|
|
Builder.defineMacro("__pic__", Twine(PICLevel));
|
|
}
|
|
if (unsigned PIELevel = LangOpts.PIELevel) {
|
|
Builder.defineMacro("__PIE__", Twine(PIELevel));
|
|
Builder.defineMacro("__pie__", Twine(PIELevel));
|
|
}
|
|
|
|
// Macros to control C99 numerics and <float.h>
|
|
Builder.defineMacro("__FLT_EVAL_METHOD__", Twine(TI.getFloatEvalMethod()));
|
|
Builder.defineMacro("__FLT_RADIX__", "2");
|
|
int Dig = PickFP(&TI.getLongDoubleFormat(), -1/*FIXME*/, 17, 21, 33, 36);
|
|
Builder.defineMacro("__DECIMAL_DIG__", Twine(Dig));
|
|
|
|
if (LangOpts.getStackProtector() == LangOptions::SSPOn)
|
|
Builder.defineMacro("__SSP__");
|
|
else if (LangOpts.getStackProtector() == LangOptions::SSPReq)
|
|
Builder.defineMacro("__SSP_ALL__", "2");
|
|
|
|
if (FEOpts.ProgramAction == frontend::RewriteObjC)
|
|
Builder.defineMacro("__weak", "__attribute__((objc_gc(weak)))");
|
|
|
|
// Define a macro that exists only when using the static analyzer.
|
|
if (FEOpts.ProgramAction == frontend::RunAnalysis)
|
|
Builder.defineMacro("__clang_analyzer__");
|
|
|
|
if (LangOpts.FastRelaxedMath)
|
|
Builder.defineMacro("__FAST_RELAXED_MATH__");
|
|
|
|
if (LangOpts.ObjCAutoRefCount) {
|
|
Builder.defineMacro("__weak", "__attribute__((objc_ownership(weak)))");
|
|
Builder.defineMacro("__strong", "__attribute__((objc_ownership(strong)))");
|
|
Builder.defineMacro("__autoreleasing",
|
|
"__attribute__((objc_ownership(autoreleasing)))");
|
|
Builder.defineMacro("__unsafe_unretained",
|
|
"__attribute__((objc_ownership(none)))");
|
|
}
|
|
|
|
// OpenMP definition
|
|
if (LangOpts.OpenMP) {
|
|
// OpenMP 2.2:
|
|
// In implementations that support a preprocessor, the _OPENMP
|
|
// macro name is defined to have the decimal value yyyymm where
|
|
// yyyy and mm are the year and the month designations of the
|
|
// version of the OpenMP API that the implementation support.
|
|
Builder.defineMacro("_OPENMP", "201107");
|
|
}
|
|
|
|
// Get other target #defines.
|
|
TI.getTargetDefines(LangOpts, Builder);
|
|
}
|
|
|
|
// Initialize the remapping of files to alternative contents, e.g.,
|
|
// those specified through other files.
|
|
static void InitializeFileRemapping(DiagnosticsEngine &Diags,
|
|
SourceManager &SourceMgr,
|
|
FileManager &FileMgr,
|
|
const PreprocessorOptions &InitOpts) {
|
|
// Remap files in the source manager (with buffers).
|
|
for (PreprocessorOptions::const_remapped_file_buffer_iterator
|
|
Remap = InitOpts.remapped_file_buffer_begin(),
|
|
RemapEnd = InitOpts.remapped_file_buffer_end();
|
|
Remap != RemapEnd;
|
|
++Remap) {
|
|
// Create the file entry for the file that we're mapping from.
|
|
const FileEntry *FromFile = FileMgr.getVirtualFile(Remap->first,
|
|
Remap->second->getBufferSize(),
|
|
0);
|
|
if (!FromFile) {
|
|
Diags.Report(diag::err_fe_remap_missing_from_file)
|
|
<< Remap->first;
|
|
if (!InitOpts.RetainRemappedFileBuffers)
|
|
delete Remap->second;
|
|
continue;
|
|
}
|
|
|
|
// Override the contents of the "from" file with the contents of
|
|
// the "to" file.
|
|
SourceMgr.overrideFileContents(FromFile, Remap->second,
|
|
InitOpts.RetainRemappedFileBuffers);
|
|
}
|
|
|
|
// Remap files in the source manager (with other files).
|
|
for (PreprocessorOptions::const_remapped_file_iterator
|
|
Remap = InitOpts.remapped_file_begin(),
|
|
RemapEnd = InitOpts.remapped_file_end();
|
|
Remap != RemapEnd;
|
|
++Remap) {
|
|
// Find the file that we're mapping to.
|
|
const FileEntry *ToFile = FileMgr.getFile(Remap->second);
|
|
if (!ToFile) {
|
|
Diags.Report(diag::err_fe_remap_missing_to_file)
|
|
<< Remap->first << Remap->second;
|
|
continue;
|
|
}
|
|
|
|
// Create the file entry for the file that we're mapping from.
|
|
const FileEntry *FromFile = FileMgr.getVirtualFile(Remap->first,
|
|
ToFile->getSize(), 0);
|
|
if (!FromFile) {
|
|
Diags.Report(diag::err_fe_remap_missing_from_file)
|
|
<< Remap->first;
|
|
continue;
|
|
}
|
|
|
|
// Override the contents of the "from" file with the contents of
|
|
// the "to" file.
|
|
SourceMgr.overrideFileContents(FromFile, ToFile);
|
|
}
|
|
|
|
SourceMgr.setOverridenFilesKeepOriginalName(
|
|
InitOpts.RemappedFilesKeepOriginalName);
|
|
}
|
|
|
|
/// InitializePreprocessor - Initialize the preprocessor getting it and the
|
|
/// environment ready to process a single file. This returns true on error.
|
|
///
|
|
void clang::InitializePreprocessor(Preprocessor &PP,
|
|
const PreprocessorOptions &InitOpts,
|
|
const HeaderSearchOptions &HSOpts,
|
|
const FrontendOptions &FEOpts) {
|
|
const LangOptions &LangOpts = PP.getLangOpts();
|
|
std::string PredefineBuffer;
|
|
PredefineBuffer.reserve(4080);
|
|
llvm::raw_string_ostream Predefines(PredefineBuffer);
|
|
MacroBuilder Builder(Predefines);
|
|
|
|
InitializeFileRemapping(PP.getDiagnostics(), PP.getSourceManager(),
|
|
PP.getFileManager(), InitOpts);
|
|
|
|
// Emit line markers for various builtin sections of the file. We don't do
|
|
// this in asm preprocessor mode, because "# 4" is not a line marker directive
|
|
// in this mode.
|
|
if (!PP.getLangOpts().AsmPreprocessor)
|
|
Builder.append("# 1 \"<built-in>\" 3");
|
|
|
|
// Install things like __POWERPC__, __GNUC__, etc into the macro table.
|
|
if (InitOpts.UsePredefines) {
|
|
InitializePredefinedMacros(PP.getTargetInfo(), LangOpts, FEOpts, Builder);
|
|
|
|
// Install definitions to make Objective-C++ ARC work well with various
|
|
// C++ Standard Library implementations.
|
|
if (LangOpts.ObjC1 && LangOpts.CPlusPlus && LangOpts.ObjCAutoRefCount) {
|
|
switch (InitOpts.ObjCXXARCStandardLibrary) {
|
|
case ARCXX_nolib:
|
|
case ARCXX_libcxx:
|
|
break;
|
|
|
|
case ARCXX_libstdcxx:
|
|
AddObjCXXARCLibstdcxxDefines(LangOpts, Builder);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Even with predefines off, some macros are still predefined.
|
|
// These should all be defined in the preprocessor according to the
|
|
// current language configuration.
|
|
InitializeStandardPredefinedMacros(PP.getTargetInfo(), PP.getLangOpts(),
|
|
FEOpts, Builder);
|
|
|
|
// Add on the predefines from the driver. Wrap in a #line directive to report
|
|
// that they come from the command line.
|
|
if (!PP.getLangOpts().AsmPreprocessor)
|
|
Builder.append("# 1 \"<command line>\" 1");
|
|
|
|
// Process #define's and #undef's in the order they are given.
|
|
for (unsigned i = 0, e = InitOpts.Macros.size(); i != e; ++i) {
|
|
if (InitOpts.Macros[i].second) // isUndef
|
|
Builder.undefineMacro(InitOpts.Macros[i].first);
|
|
else
|
|
DefineBuiltinMacro(Builder, InitOpts.Macros[i].first,
|
|
PP.getDiagnostics());
|
|
}
|
|
|
|
// If -imacros are specified, include them now. These are processed before
|
|
// any -include directives.
|
|
for (unsigned i = 0, e = InitOpts.MacroIncludes.size(); i != e; ++i)
|
|
AddImplicitIncludeMacros(Builder, InitOpts.MacroIncludes[i],
|
|
PP.getFileManager());
|
|
|
|
// Process -include-pch/-include-pth directives.
|
|
if (!InitOpts.ImplicitPCHInclude.empty())
|
|
AddImplicitIncludePCH(Builder, PP, InitOpts.ImplicitPCHInclude);
|
|
if (!InitOpts.ImplicitPTHInclude.empty())
|
|
AddImplicitIncludePTH(Builder, PP, InitOpts.ImplicitPTHInclude);
|
|
|
|
// Process -include directives.
|
|
for (unsigned i = 0, e = InitOpts.Includes.size(); i != e; ++i) {
|
|
const std::string &Path = InitOpts.Includes[i];
|
|
AddImplicitInclude(Builder, Path, PP.getFileManager());
|
|
}
|
|
|
|
// Exit the command line and go back to <built-in> (2 is LC_LEAVE).
|
|
if (!PP.getLangOpts().AsmPreprocessor)
|
|
Builder.append("# 1 \"<built-in>\" 2");
|
|
|
|
// Instruct the preprocessor to skip the preamble.
|
|
PP.setSkipMainFilePreamble(InitOpts.PrecompiledPreambleBytes.first,
|
|
InitOpts.PrecompiledPreambleBytes.second);
|
|
|
|
// Copy PredefinedBuffer into the Preprocessor.
|
|
PP.setPredefines(Predefines.str());
|
|
|
|
// Initialize the header search object.
|
|
ApplyHeaderSearchOptions(PP.getHeaderSearchInfo(), HSOpts,
|
|
PP.getLangOpts(),
|
|
PP.getTargetInfo().getTriple());
|
|
}
|